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Preprint ARTICLE | doi:10.20944/preprints202402.1031.v1

Characterization of Orbital Angular Momentum Beams by Polar Mapping and Fourier Transform

Ruediger Grunwald, Martin Bock

Subject: Physical Sciences, Optics And Photonics Keywords: Orbital momentum; polar mapping; Fast Fourier Transform; vortex beams; singular optics; structured light; beam characterization; mode sorting; topological charge; spiral recognition

Online: 19 February 2024 (10:23:15 CET)

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Preprint ARTICLE | doi:10.20944/preprints202405.0206.v1

Generation of Propagation-Dependent OAM Self-Torque with Chirped Spiral Gratings

Ruediger Grunwald, Mathias Jurke, Max Liebmann, Alexander Treffer, Martin Bock

Subject: Physical Sciences, Optics And Photonics Keywords: orbital angular momentum; vortex beams; singular optics; spectral anomalies; Gouy effect; spiral gratings; chirped gratings; spatial light modulator; angular velocity; self-torque

Online: 6 May 2024 (07:35:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0749.v1

Size Uniformity of CsPbBr3 Perovskite Quantum Dots via Manganese-Doping

Mi Zhang, Xue Han, Changgang Yang, Guofeng Zhang, Wenli Guo, Jialu Li, Zhihao Chen, Bin Li, Ruiyun Chen, Chengbing Qin, Jianyong Hu, Zhichun Yang, Ganying Zeng, Liantuan Xiao, Suotang Jia

Subject: Chemistry And Materials Science, Nanotechnology Keywords: CsPbBr₃ perovskite quantum dots; manganese-doping; size uniformity; single quantum-dot spectroscopy; narrow-linewidth

Online: 9 July 2024 (16:18:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.1717.v1

High Energy Pulsed Laser Beam to Produce a Thin Layer of Crystalline Silver without Heating the Deposition Substrate and Its Catalytic Effects

Alexandru Cocean, Georgiana Cocean, Cristina Postolachi, Silvia Garofalide, Daniela Angelica Pricop, Bogdanel Silvestru Munteanu, Georgiana Bulai, Nicanor Cimpoesu, Iuliana Motrescu, Vasile Pelin, Razvan Vasile Ababei, Dan-Gheorghe Dimitriu, Iuliana Cocean, Silviu Gurlui

Subject: Physical Sciences, Applied Physics Keywords: catalysis; ablation plasma diagnosis; borax treatment

Online: 28 March 2024 (09:38:41 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0441.v1

Overcoming CD Spectroscopy Sample Preparation Challenges in Protein Structural Analysis for Biosimilars

Temitope Agbelusi, Ketan Pancholi, Harini Sampatk Kumar, Amit Kumar

Subject: Medicine And Pharmacology, Pharmacy Keywords: protein; surfactant; SDS; protein-surfactant-interaction; circular-diachorism; Chirality

Online: 5 January 2024 (10:38:20 CET)

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Preprint ARTICLE | doi:10.20944/preprints201610.0099.v1

Band Gap Tuning in 2D Layered Materials by Angular Rotation

Javier Polanco-González, Jesús Alfredo Carranco-Rodríguez, José Luis Enríquez-Carrejo, Pierre Giovanni Mani-González, José Manuel Domínguez-Esquivel, Manuel Ramos

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Moiré patterns; MoS2; Graphene; WS2; WSe2; HRTEM

Online: 24 October 2016 (05:03:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1776.v1

CD Markers and HLA Expression in Chronic Lymphocytic Leukemia Patients: correlations and clinical relevance

Maria Tizu, Bogdan Calenic, Alexandra-Elena Constantinescu, Alexandru Adrian Bratei, Razvan Antonio Stoia, MIhnea Catalin-Gabriel Popa, Ileana Constantinescu

Subject: Medicine And Pharmacology, Immunology And Allergy Keywords: Chronic lymphocytic leukemia; cluster of differentiation; human leukocyte antigen

Online: 27 May 2024 (14:27:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.0151.v1

Wheat Flour Pasta Combining Bacillus Coagulans and Arthrospira platensis as a Novel Probiotic Food with Antioxidants

Aldo Iván García-Moncayo, Emilio Ochoa-Reyes, Hilda Karina Sáenz-Hidalgo, Pedro González-Pérez, Laila N. Muñoz-Castellanos, David Roberto Sepúlveda-Ahumada, José Juan Buenrostro-Figueroa, Mónica Alvarado-González

Subject: Biology And Life Sciences, Food Science And Technology Keywords: Pasta; Functional; Arthrospira; Probiotic; antioxidants; novel foods

Online: 3 August 2024 (16:07:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202402.0229.v1

Distribution, Accumulation and Translation Characteristics of Heavy Metals CD in Different Varities of Edible Rape Under CD Stress

Jing Liu, Yun Ling Kang, Feng Lian Du, Qiang Shang Liao, Wei Dong, Ting Mao Ma, Yuan Guan Zou, Jiang Shun Li

Subject: Environmental And Earth Sciences, Environmental Science Keywords: Edible rape; Cd pollution; accumulation; translation; variety

Online: 5 February 2024 (06:22:52 CET)

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Preprint ARTICLE | doi:10.20944/preprints201702.0108.v1

Chiral Optical Tamm States: Temporal Coupled-Mode Theory

Ivan V. Timofeev, Pavel S. Pankin, Stepan Ya. Vetrov, Vasily G. Arkhipkin, Wei Lee, Victor Ya. Zyryanov

Subject: Physical Sciences, Optics And Photonics Keywords: optical Tamm state; cholesteric liquid crystal; handedness-preserving mirror

Online: 28 February 2017 (13:51:30 CET)

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Preprint ARTICLE | doi:10.20944/preprints201805.0340.v1

Effects of Light Dosimetry in Photobleaching of The Photosensitizer (PS) and Cyanine Dye (CD) Moieties in Ps-Cd Conjudates and Its Correlation with Photodynamic Therapy (PDT) Efficacy

Nadine James, Ravindra R. Cheruku, Joseph R. Missert, Ulas Sunar, Ravindra K. Pandey

Subject: Medicine And Pharmacology, Oncology And Oncogenics Keywords: photodynamic therapy; photobleaching; photosensitizers; fluorescence imaging

Online: 24 May 2018 (08:32:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0705.v1

Assessing Digestate at Different Stabilization Stages: Application of Thermal Analysis and FTIR Spectroscopy

Silvia González-Rojo, Daniela Carrillo-Peña, Ruben González, Xiomar Gómez

Subject: Engineering, Chemical Engineering Keywords: anaerobic stabilization; thermal valorization; mineralization; activation energy

Online: 13 May 2024 (02:53:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.0765.v1

Probing Biological Nitrogen Fixation in Legumes Using Raman Spectroscopy

Abdolabbas Jafari, Kritarth Seth, Armin Werner, Shengjing Shi, Rainer Hofmann, Valerio Hoyos-Villegas

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: Pattern recognition; chemometrics; precision agriculture; non-destructive; rhizobia; symbiosis

Online: 12 June 2024 (11:58:38 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202104.0205.v1

Different Lower Extremity Arterial Calcification Patterns in Patients with Chronic Limb-Threatening Ischemia Compared with Asymptomatic Controls

Louise CD Konijn, Richard AP Takx, Willem PThM Mali, Hugo TC Veger, Hendrik van Overhagen

Subject: Medicine And Pharmacology, Immunology And Allergy Keywords: chronic limb-threatening ischemia; peripheral arterial disease; calcification pattern

Online: 7 April 2021 (14:45:17 CEST)

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Objectives The most severe type of peripheral arterial disease (PAD) is critical limb ischaemia (CLI). In CLI, calcification of the vessel wall plays an important role in symptoms, amputation rate and mortality. However, calcified arteries are also found in asymptomatic persons (non-PAD patients). We investigated whether the calcification pattern in CLI patients and non- PAD patients are different and could possibly explain the symptoms in CLI patients. Materials and Methods 130 CLI and 204 non-PAD patients underwent a CT of the lower extremities. This resulted in 118 CLI patients (mean age 72±12, 70.3% male) that were age-matched with 118 non-PAD patients (mean age 71±11, 51.7% male). The characteristics severity, annularity, thickness and continuity were assessed in the femoral and crural arteries and analysed by binary multiple logistic regression. Results Nearly all CLI patients have calcifications and these are equally frequent in the femoropopliteal (98.3%) and crural arteries (97.5%), while the non-PAD patients had in just 67% any calcifications with more calcifications in the femoropopliteal (70.3%) than in the crural arteries (55.9%, p<0.005). The crural arteries of the CLI patients had significantly more complete annular calcifications (OR 2.92, p=0.001.) while in the non-PAD patients dot-like calcifications dominated. In CLI patients, the femoropopliteal arteries had more severe, irregular / patchy and thick calcifications (OR 2.40, 3.27, 1.81, p≤0.05, respectively) while in non-PAD patients, thin continuous calcifications prevailed. Conclusions Compared with non-PAD patients CLI patients are more frequently and extensively calcified. Annular calcifications were found in the crural arteries of CLI patients while dot-like calcifications were mostly present in the non-PAD patients. These different patterns of calcifications in CLI point at different etiology and can have prognostic and eventually therapeutic consequences.

Preprint ARTICLE | doi:10.20944/preprints202403.1646.v1

Moisture Content Assessment of Commercially Available Diesel Fuel Using Impedance Spectroscopy

Lukasz Macioszek, Dariusz Sobczyński

Subject: Engineering, Energy And Fuel Technology Keywords: fuel; quality control; electrical measurement; diesel; impedance spectroscopy; fuel contamination

Online: 27 March 2024 (03:43:07 CET)

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Preprint ARTICLE | doi:10.20944/preprints201703.0054.v1

Enhancing the Responsivity of Uncooled Infrared Detectors Using Plasmonics for High-Performance Infrared Spectroscopy

Amr Shebl Ahmed, Hye Jin Kim, Jinsik Kim, Kyo Seon Hwang, Seonghwan Kim

Subject: Physical Sciences, Applied Physics Keywords: plasmonics; infrared detector; MEMS; gas sensing

Online: 10 March 2017 (10:21:40 CET)

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Preprint REVIEW | doi:10.20944/preprints202407.1407.v1

Imaging Spectroscopy for Mining: Insights for Hyperspectral Drone Applications

Friederike Magdalena Koerting, Saeid Asadzadeh, Justus Constantin Hildebrand, Ekaterina Savinova, Evlampia Kouzeli, Konstantinos G. Nikolakopoulos, David Lindblom, Nicole Koellner, Simon J. Buckley, Miranda R. Lehman, Daniel Schläpfer, Steven Micklethwaite

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: hyperspectral imaging; UAS; mining; visible near-infrared; shortwave infrared; mineral mapping; waste remediation; environmental monitoring; drone

Online: 17 July 2024 (10:56:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1247.v1

Beta-Cyclodextrin Molecules (β‐CD) Modified PVDF Membranes to Remove Multi-Ionic Dye Solutions using Steric, Inclusion, and Dielectric Exclusion

Wadha Alrashedi, Hafedh Ben KOCHKAR, Ismail Ercan

Subject: Chemistry And Materials Science, Biomaterials Keywords: β ‐cyclodextrin; hydrophilicity; PVDF membrane; Dye separation; dielectric exclusion

Online: 18 April 2024 (14:07:48 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints201610.0058.v2

Local Electrical Response in Alkaline-Doped Electrodeposited CuInSe₂/Cu Films

Javier A. Barón-Miranda, Octavio Calzadilla, Liliana E. Arvizu-Rodríguez, Jose L. Fernandez-Muñoz, Cesia Guarneros-Aguilar, Fabio F. Chalé-Lara, Ulises Páramo-García, Felipe Caballero-Briones

Subject: Chemistry And Materials Science, Surfaces, Coatings And Films Keywords: CuInSe2 electrodeposition; alkaline doping; current sensing atomic force microscopy

Online: 18 December 2016 (09:48:30 CET)

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Preprint ARTICLE | doi:10.20944/preprints202407.0928.v1

Transmission Spectroscopy Along the Transit of Venus: A Proxy for Exoplanets Atmospheric Characterization

Alexandre Baptista Branco, Pedro Machado, Olivier Demangeon, Sarah Amelia Jaeggli, Thomas Widemann, Paolo Tanga

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Venus; Solar Transit; High-resolution transmission spectroscopy; Radiative transfer; Cross-correlation; Carbon dioxide; Carbon monoxide; Ozone; Venus-like exoplanets

Online: 11 July 2024 (08:37:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1324.v1

Chinese Cabbage MYELOBLASTOSIS116 Homolog Confers Cd Tolerance in Yeast through Activation of The Facilitator of Iron Transport 3 which Reduces Cd Accumulation in Chinese Cabbage

Lilong He, Chao Yuan, Bing Cui, Li-Xia Wang, Shu Zhang, Cheng Li, Jing-Juan Li, Ali Anwar, Jianwei Gao

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: MYB116; transcription factor; facilitator of iron transport 3 (FIT3); reduction of Cd accumulation; Chinese cabbage

Online: 18 August 2023 (09:22:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.0793.v1

A Comparison of Battery Equivalent Circuit Model Parameter Extraction Approaches Based on Electrochemical Impedance Spectroscopy

Yuchao Wu, Balakumar Balasingam

Subject: Engineering, Electrical And Electronic Engineering Keywords: Li-ion battery (LIB); battery parameters estimation; battery management system; electrochemical impedance spectroscopy (EIS); electrical equivalent circuit models (ECM); exhaustive search (ES); least squares (LS); Monte-Carlo run; nonlinear least squares (NLS)

Online: 10 September 2024 (10:59:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0390.v1

BSA Binding and Aggregate Formation of a Synthetic Amino Acid with Potential for Promoting Fibroblast Proliferation: An In Silico, CD Spectroscopic, DLS, and Cellular Study

Hayarpi M Simonyan, Rosanna Palumbo, Satenik Petrosyan, Anna F Mkrtchyan, Armen Galstyan, Ashot S. Saghyan, Pasqualina Liana Scognamiglio, Caterina Vicidomini, Marta Fik-Jaskółka, Giovanni N Roviello

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: in silico; protein binding; self-assembling system; synthetic amino acid; fibroblast growth enhancement; tissue regeneration

Online: 7 May 2024 (15:41:49 CEST)

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This study presents the chemical synthesis, purification, and characterization of a novel non-natural synthetic amino acid. The compound was synthesized in solution, purified, and characterized using NMR spectroscopy, polarimetry, and melting point determination. Dynamic Light 22 Scattering (DLS) analysis demonstrated its ability to form aggregates with an average size of 391 nm, extending to low micrometric sizes. Furthermore, cellular biological assays revealed its ability to enhance fibroblast cell growth, highlighting its potential for tissue regenerative applications. Circular dichroism (CD) spectroscopy showed the ability of the synthetic amino acid to bind serum albumins (using bovine serum albumin (BSA) as a model), and CD deconvolution provided insights into the changes in secondary structures of BSA upon interaction with the amino acid ligand. Additionally, molecular docking using HDOCK software elucidated the most likely binding mode of the ligand inside the BSA structure. We also performed in silico oligomerization of the synthetic compound in order to obtain a model of aggregate to investigate computationally. More in detail, in the dimer formation achieved by molecular self-docking, two distinct poses were observed, corresponding to the lowest and comparable energies, with one pose exhibiting a quasi-coplanar arrangement characterized by a close alignment of two aromatic rings from the synthetic amino acids within the dimer, suggesting the presence of π-π stacking interactions. In contrast, the second pose displayed a non-coplanar configuration, with the aromatic rings oriented in a staggered arrangement, indicating distinct modes of interaction. Both poses were further utilized in the self-docking procedure. Notably, iterative molecular docking of amino acid structures resulted in the formation of higher-order aggregates, with a model of a 512-mer aggregate obtained through self-docking procedures. This model of aggregate presented a cavity capable of hosting therapeutic cargoes and biomolecules, rendering it a potential scaffold for cell adhesion and growth in tissue regenerative applications. Overall, our findings highlight the potential of this synthetic amino acid for tissue regenerative therapeutics and provide valuable insights into its molecular interactions and aggregation behavior.

Preprint ARTICLE | doi:10.20944/preprints202304.0296.v1

Capacity and Mechanisms of Pb(II) and Cd(II) Sorption on Five Plant-based Biochars

Yan Yu, Jiangtao He, Jingyang Sun, Zixuan Pei, Qidong Wu, Rui Yu

Subject: Environmental And Earth Sciences, Environmental Science Keywords: biochar; crop straws; heavy metal adsorption; adsorption kinetics; characterization

Online: 13 April 2023 (05:08:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202401.1147.v2

Characterization of Bixin by UV-Visible Spectroscopy and HPLC, and Its Application as Latent Fingermark Developer

Danielle Tapia Bueno, Amanda Fonseca Leitzke, Rosane Lopes Crizel, Cristina Jansen-Alves, Emanuel Gomes Bertizzolo, Juliana Porciuncula Da Silva, Gabrielly Quartieri Sejanes, Kristiane de Cássia Mariotti, Claudio Martin Pereira De Pereira

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: bixin; liquid chromatography; composites; zinc carbonate; kaolinite; fingermark; fingerprint revealers; papilloscopy.

Online: 4 March 2024 (09:58:59 CET)

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Preprint ARTICLE | doi:10.20944/preprints201705.0146.v1

Numerical Analysis of Unsymmetric Flatbak Trailing Edge Airfoil to Reduce Turbomachinery Noise in Power Generation Cycle

Hyungki Shin, Hogeon Kim, Taehyung Kim, Soo-Hyun Kim, Soogab Lee, Young-Jin Baik, Gilbong Lee

Subject: Engineering, Marine Engineering Keywords: power generation cycle; turbo machinery; turbine; compressor; blade; airfoil; noise

Online: 19 May 2017 (08:54:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.1076.v1

Enhancing the Anti-Leukemic Potential of Thymoquinone- SBE-β-CD Inclusion Complex

ELTAYEB E.M. EID, Salah Abdalrazak Alshehade, Amer A. Almiman, Sareh Kamran, Vannajan Sanghiran Lee, Mohammed Abdullah Alshawsh

Subject: Medicine And Pharmacology, Hematology Keywords: Thymoquinone; SBE-β-CD; Leukemia; Drug delivery system; Telomerase inhibition; Apoptosis

Online: 15 June 2023 (05:37:50 CEST)

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Preprint REVIEW | doi:10.20944/preprints202403.1430.v1

Imaging Spectroscopy for the Mining Life Cycle: A Guide for Drone Applications

Friederike Koerting, Saeid Asadzadeh, Justus Constantin Hildebrand, Ekaterina Savinova, Evlampia Kouzeli, Konstantinos Nikolakopoulos, David Lindblom, Nicole Koellner, Simon J. Buckley, Miranda Lehman, Daniel Schläpfer, Steven Micklethwaite

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: hyperspectral imaging; UAS; mining; visible near-infrared; shortwave infrared; mineral mapping; waste remediation; environmental monitoring; drone

Online: 25 March 2024 (08:47:40 CET)

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Preprint ARTICLE | doi:10.20944/preprints202405.1828.v1

Enhancing Early Detection of Sepsis in Neonates through Multimodal Biosignal Integration: A Study of Pulse Oximetry, Near-Infrared Spectroscopy (NIRS), and Skin Temperature Monitoring

Nicoleta Lungu, Daniela-Eugenia Popescu, Ana Maria Cristina Jura, Mihaela Zaharie, Mihai-Andrei Jura, Ioana Roșca, Mărioara Boia

Subject: Medicine And Pharmacology, Pediatrics, Perinatology And Child Health Keywords: neonatal sepsis; biosignals; early detection; preterm newborn; pulse oximetry; NIRS; skin temperature; non-invasive monitoring; devices; health monitoring

Online: 28 May 2024 (11:26:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202402.1438.v1

Convolutional Neural Networks Applied to Antimony Quantification via Reflectance Spectroscopy Using Soils from Northern Portugal: Opportunities and Challenges

Morgana Carvalho, Joana Cardoso-Fernandes, Alexandre Lima, Ana Caudia Teodoro

Subject: Environmental And Earth Sciences, Geophysics And Geology Keywords: Antimony; exploration; reflectance spectroscopy; soil analysis; critical raw materials; deep learning; geology

Online: 26 February 2024 (11:43:43 CET)

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Preprint REVIEW | doi:10.20944/preprints202306.0166.v1

Vibrational Spectroscopy of Phytochromes

Peter Hildebrandt

Subject: Biology And Life Sciences, Biophysics Keywords: Raman, IR, spectroscopy, phytochrome, tetrapyrrole, photoswitch

Online: 2 June 2023 (09:01:39 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0576.v1

Reactivity and Heavy Metal Adsorption Behaviour of Graphene Oxide Nanoparticle From First Principle Investigations: Case of Pb and CD

Preslie S. Nianga-Obambi, Dick Hartmann Douma, Anne Justine Etindele, Abdulrafiu Tunde Raji, Brice rodrigue Malonda-Boungou, Bernard M'PASSI-MABIALA, Stephane Kenmoe

Subject: Chemistry And Materials Science, Theoretical Chemistry Keywords: Graphene oxide; Density Functional Theory; Heavy metals; Adsorption

Online: 9 May 2024 (09:15:26 CEST)

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Graphene oxide (GO) is considered as one of the promising adsorbents for the removal of various heavy metal contaminants in aquatic environment, due to its beneficial structural, chemical and electronic properties. Using the density functional theory (DFT) approach, we investigate the reactivity of a model GO nanoparticule (C30H14O15) toward neutral and charged lead (Pb) and cadmium (Cd) atoms. We found the model metal-free GO to have a high chemical reactivity. To study the adsorption of the metal atoms on the GO nanoparticle, we have used a single and doubly-adsorbed neutral (Pb0 and Cd0) and charged (Pb2+, Cd2+) atoms. After identified possible adsorption sites on the GO, we found that a single charged metal ion binds more strongly than a neutral atom of the same type. To determine the possibility of multiple adsorptions of GO nanoparticle, two metal atoms of the same species are co-adsorbed on its surface. Our calculations reveals a site-dependent adsorption energy such that when two atoms of the same specie are adsorbed at sites Si and Sj , the binding energy per atom depends on the whether one of the two atoms is adsorbed firstly on the Si or Sj sites. It is also found that the binding energy per atom for two co-adsorbed atoms of the same specie is less than the binding energy of a singly-adsorbed atom which suggests that atoms may become less likely to be adsorbed on the GO nanoparticle when their concentrations increase. This applies to both neutral and charged atoms. We adduce the origin of this observation to be interplay between metal-metal interaction on the one hand and GO-metal on the other, with the former resulting in a less binding for the charged adsorbed metals in particular, due to repulsive interaction between two positively charged ions. The frontier molecular orbitals analysis and the calculated global reactivity descriptors of the respective GO- metal complexes revealed that all the GO-metal complexes have a smaller HOMO-LUMO gap (HLG) relative to that of pristine metal-free GO nanoparticle. This suggests that although the GO-metal complexes are stable, they are less stable compared to metal-free GO nanoparticles. The negative values of the chemical potentials obtained for all the GO-metal complexes further confirms their stability. Our work calculates parameters that will be crucial to rational design of GO nanoparticles for Pb abd Cd ions contaminants removal, and may find application in water purification for example.

Preprint ARTICLE | doi:10.20944/preprints201701.0064.v1

Identification of Secondary Phases in Cu₂ZnSnS₄ Layers by In-depth Resolved X-ray Photoelectron Spectroscopy Analysis

Xianfeng Zhang, M. Kobayashi

Subject: Chemistry And Materials Science, Other Keywords: secondary phases; CZTS film; XPS

Online: 12 January 2017 (11:04:27 CET)

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Preprint ARTICLE | doi:10.20944/preprints201905.0019.v1

Phytostabilization of Zn and Cd in Mine Soil Using Corn in Combination with Manure-Based Biochar and Compost

Gilbert Sigua, Jeff Novak, Don Watts, Jim Ippolito, Thomas Ducey, Mark Johnson, Kurt Spokas

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: biochar; phytoextraction; corn; uptake; mine soils; heavy metals; root biomass; shoot biomass

Online: 5 May 2019 (12:11:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1931.v1

Fourier-Transform Infrared Spectroscopy Application for Candida auris Outbreak Typing in a Referral Intensive Care Unit: Phylogenetic Analysis and Clustering Cut-Off Definition

Antonio Curtoni, Lisa Pastrone, Miriam Cordovana, Alessandro Bondi, Giorgia Piccinini, Mattia Genco, Paolo Bottino, Carlotta Polizzi, Lorenza Cavallo, Narcisa Mandras, Silvia Corcione, Giorgia Montrucchio, Luca Brazzi, Cristina Costa

Subject: Medicine And Pharmacology, Epidemiology And Infectious Diseases Keywords: Candida auris; Fourier-Transform Infrared Spectroscopy; IR-Biotyper; outbreak; phylogenetic analysis; cluster analysis; multi-resistant fungal pathogen; healthcare associated infections

Online: 29 May 2024 (07:41:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202402.1008.v1

Comparison of Optogalvanic and Laser-Induced Fluorescence Spectroscopy

Laurentius Windholz

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: Lanthanide spectroscopy; Optogalvanic detection; Laser-induced fluorescence detection

Online: 19 February 2024 (07:46:52 CET)

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Preprint REVIEW | doi:10.20944/preprints202312.1913.v1

Near-infrared Spectroscopy for Brain and Breast Imaging

Daniel Buckley

Subject: Engineering, Bioengineering Keywords: Near-infrared spectroscopy; Brain imaging; Breast imaging; Brain activity; Cancer; Diffuse Optical; Tomography; fNIRS

Online: 26 December 2023 (07:47:29 CET)

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Working Paper ARTICLE

Laser-Plasma Spatio-Temporal Cyanide Spectroscopy and Applications

Christian G. Parigger, Christopher M. Helstern, Benjamin S. Jordan, David M. Surmick, Robert Splinter

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: plasma diagnostics; molecular spectra; diatomic molecules; plasma spectroscopy; laser spectroscopy; laser-induced breakdown spectroscopy; optical emission spectroscopy; hypersonic expansion

Online: 15 January 2020 (07:12:25 CET)

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Preprint ARTICLE | doi:10.20944/preprints202405.1749.v1

Surface Enhanced Raman Spectroscopy Combined With Multivariate Analysis for Fingerprinting Clinically Similar, Fibromyalgia and Long-COVID Syndromes

Shreya Madhav Nuguri, Kevin V. Hackshaw, Silvia de Lamo Castellvi, Yalan Wu, Celeste Matos Gonzalez, Chelsea M. Goetzman, Zachary D. Schultz, Lianbo Yu, Rija Aziz, Michelle Osuna Diaz, Katherine Sebastian, W. Michael Brode, M Monica Giusti, Luis Rodriguez-Saona

Subject: Medicine And Pharmacology, Internal Medicine Keywords: Long COVID; Fibromyalgia; surface enhanced Raman spectroscopy; volumetric absorptive micro sampling; dried bloodspot cards

Online: 27 May 2024 (11:28:23 CEST)

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Preprint REVIEW | doi:10.20944/preprints202109.0324.v1

Fundamentals of Diatomic Molecular Spectroscopy

Christian G Parigger

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: Foundations of Quantum Mechanics; Molecular Spectroscopy; Diatomic Molecules; Symmetry Transformations; Optical Emission Spectroscopy; Astrophysics

Online: 20 September 2021 (10:45:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.0033.v1

Distribution and Comprehensive Risk Evaluation of Cr, CD, Fe, Zn, and Pb from Al Lith Coastal Seawater, Saudi Arabia

Talal Alharbi, Abdelbaset S. El-Sorogy, Khaled Al-Kahtany

Subject: Environmental And Earth Sciences, Pollution Keywords: Risk assessment; Zinc; Lead; Cadmium; Seawater; Red Sea

Online: 4 June 2024 (02:52:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202210.0288.v1

Protein Analysis of A. halleri and N. caerulescens Hyperaccumulators when Exposed to Nano and Ionic Forms of CD and Zn

Valentina Gallo, Valentina M. Serianni, Davide Imperiale, Andrea Zappettini, Marco Villani, Marta Marmiroli, Nelson Marmiroli

Subject: Chemistry And Materials Science, Nanotechnology Keywords: Proteomics; 2D SDS-PAGE; Nanoscale and ionic metals; Quantum dots; Hyperaccumulator

Online: 19 October 2022 (13:14:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1293.v1

Immobilizing Effects on Exchangeable CD Merged Soil by Various Amendments – Focused on Plant Uptake and Soil Microbial Community

Tuan Nguyen Quoc, Myung Chae Jung

Subject: Environmental And Earth Sciences, Soil Science Keywords: Cd contaminated soil; soil amendments; Cd uptake by plant; Cd immobilization; Soil microbial community

Online: 19 August 2024 (12:23:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202303.0436.v1

Co-Precipitation of CD, Cr, Pb, Zn, and Carbonates Using Vibrio harveyi Strain Isolated From Mediterranean Sea Sediment

Mazhar Ali Jarwar, Pablo Del Buey, M Esther Sanz-Montero, Stefano Dumontet, Elena Chianese, Vincenzo Pasquale

Subject: Environmental And Earth Sciences, Pollution Keywords: Heavy metals; microbially induced carbonate precipitation (MICP); co-precipitation; calcite; vaterite

Online: 27 March 2023 (03:26:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202401.1000.v1

Inverse Problems in Pump-Probe Spectroscopy

Denis S. Tikhonov, Diksha Garg, Melanie Schnell

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: pump-probe spectroscopy; inverse problems; Monte-Carlo sampling

Online: 12 January 2024 (07:51:29 CET)

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Preprint ARTICLE | doi:10.20944/preprints202407.1109.v1

Application of Reduced Graphene Oxide-Zinc Oxide Nanocomposite in the Removal of Pb(II) and Cd(II) Contaminated Wastewater

Moeng Geluk Motitswe, Kassim Olasunkanmi Badmus, Lindiwe Khotseng

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Toxic metal; wastewater; nanocomposite; adsorption; Freundlich

Online: 15 July 2024 (10:35:41 CEST)

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Preprint REVIEW | doi:10.20944/preprints202305.1043.v1

New Prospects in the Electroanalysis of Heavy Metals (CD, Pb, Zn, Cu); Development and Application of Innovative Electrode Surfaces

Stella Girousi, Sophia Karastogianni, Vasiliki Keramari

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: heavy metals; modified electrode; electroanalysis; nanoparticles

Online: 15 May 2023 (12:34:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1546.v1

Raman Spectroscopy and Electrical Transport in 30Li2O• (67-X) B2O3•(x) SiO2•3Al2O3 Glasses

Amrit P. Kafle, David McKeown, Winnie Wong-Ng, Meznh Alsubaie, Manar Alenezi, Ian L Pegg, Biprodas Dutta

Subject: Chemistry And Materials Science, Electronic, Optical And Magnetic Materials Keywords: Mixed glass former effect, Raman spectroscopy, Glass transition temperature, Electrical conductivity, Van der Pauw Four Probe method

Online: 23 May 2024 (12:33:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.0797.v1

CRYSTAL GROWTH AND SPECTROSCOPY OF Yb2+ DOPED CsI SINGLE CRYSTAL

Dmitriy Sofich, Alexandra Myasnikova, Alexander Bogdanov, Viktorija Pankratova, Vladimir Pankratov, Ekaterina Kaneva, Roman Yu. Shendrik

Subject: Physical Sciences, Condensed Matter Physics Keywords: cesium iodide; ytterbium; luminescence; single crystal; Czochralski method

Online: 13 May 2024 (07:48:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201906.0095.v1

Atomic and Molecular Laser-Induced Breakdown Spectroscopy of Selected Pharmaceuticals

Pravin Kumar Tiwari, Nilesh K. Rai, Rohit Kumar, Christian G. Parigger, Awadhesh Kumar RAI

Subject: Physical Sciences, Optics And Photonics Keywords: paracetamol; laser-induced breakdown spectroscopy; cyanide; carbon Swan bands; principal component analysis; Raman spectroscopy; Fourier-Transform-infra-red spectroscopy

Online: 11 June 2019 (10:42:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201705.0106.v1

Flavonoid and Antioxidant Capacity of Propolis Prediction Usingnear Infrared Spectroscopy

Eddy Betances-Salcedo, Isabel Revilla, Ana M. Vivar-Quintana, M. Inmaculada González-Martín

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: propolis; NIR spectroscopy; flavonoids; antioxidant capacity

Online: 12 May 2017 (05:53:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201808.0082.v1

Microbial Population Dynamics and the Role of Sulfur Reducing Bacteria Genes in Stabilizing Pb, Zn and Cd in the Terrestrial Subsurface

Ranju R. Karna, Ganga M. Hettiarachchi, Joy D. Van Nostrand, Tong Yuan, Charles W. Rice, Yared M. Assefa, Jizhong Zhou

Subject: Environmental And Earth Sciences, Environmental Science Keywords: mine waste; lead; zinc; cadmium; microbial role; sulfur-reducing bacteria

Online: 4 August 2018 (11:07:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202109.0331.v1

Batch Adsorption, Kinetics, and DFT study of Cd(II) Ion From Aqueous Solution By Low-Cost Starch-Based Activated Carbon

Saad Melhi Alshahrani, Bushra Bostan, Saeed Ullah Jan, Adnan Ali Khan, Khan Badsha, Saeed Ullah

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Adsorption; DFT; Cadmium(II) ion; Activated carbon; Kinetics; Thermodynamics

Online: 20 September 2021 (12:22:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0167.v1

Hydroxyl Spectroscopy of Laboratory Air Laser-Ignition

Christian G. Parigger

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: molecular spectroscopy; diatomic molecules; optical emission spectroscopy; laser induced optical breakdown; hydroxyl; nitrogen second positive; cynaide; atomic spectroscopy; plasma physics; astrophysics

Online: 13 September 2022 (09:59:03 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202206.0339.v1

New Current Oscillator for Electrical Bioimpedance Spectroscopy

David William Cordeiro Marcôndes, Pedro Bertemes-Filho, Aleksander Sade Paterno

Subject: Engineering, Electrical And Electronic Engineering Keywords: Current Oscillator; Pyragas Model; Second-Generation Current Carrier; Bioimpedance Spectroscopy

Online: 24 June 2022 (13:45:47 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202111.0425.v1

sub-Hz Differential Rotational Spectroscopy of Enantiomers

Lincoln Satterthwaite, Greta Koumarianou, Daniel Sorensen, David Patterson

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: chirality; microwave spectroscopy; electroweak force; precision measurement; differential spectroscopy; parity violation

Online: 23 November 2021 (14:37:44 CET)

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Preprint ARTICLE | doi:10.20944/preprints202002.0053.v1

Laser-Plasma Spectroscopy of Hydroxyl with Applications

Christian G. Parigger, Christopher M. Helstern, Benjamin S. Jordan, David M. Surmick, Robert Splinter

Subject: Physical Sciences, Chemical Physics Keywords: plasma diagnostics; molecular spectra; diatomic molecules; plasma spectroscopy; laser spectroscopy; laser-induced breakdown spectroscopy; optical emission spectroscopy; molecular excitation temperature; combustion analysis; astrophysical spectroscopy

Online: 5 February 2020 (03:27:47 CET)

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Preprint ARTICLE | doi:10.20944/preprints201909.0013.v1

Near-Field IR Orientational Spectroscopy of Silk

Meguya Ryu, Reo Honda, Aina Reich, Adrian Cernescu, Jing-Liang Li, Jingwen Hu, Saulius Juodkazis, Junko Morikawa

Subject: Chemistry And Materials Science, Nanotechnology Keywords: silk; anisotropy; absorbance; retardance

Online: 1 September 2019 (12:56:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0452.v1

Solar Neutrinos Spectroscopy with Borexino Phase-II

Lino Miramonti, M. Agostini, K. Altenmueller, S. Appel, V. Atroshchenko, Z. Bagdasarian, D. Basilico, G. Bellini, J. Benziger, D. Bick, I. Bolognino, G. Bonfini, D. Bravo, B. Caccianiga, F. Calaprice, A. Caminata, S. Caprioli, M. Carlini, P. Cavalcante, F. Cavanna, A. Chepurnov, K. Choi, L. Collica, S. Davini, A. Derbin, X.F. Ding, A. Di Ludovico, L. Di Noto, I. Drachnev, K. Fomenko, A. Formozov, D. Franco, F. Gabriele, C. Galbiati, M. Gschwender, C. Ghiano, M. Giammarchi, A. Goretti, M. Gromov, D. Guffanti, C. Hagner, T. Houdy, E. Hungerford, Aldo Ianni, Andrea Ianni, A. Jany, D. Jeschke, V. Kobychev, D. Korablev, G. Korga, T. Lachenmaier, M. Laubenstein, E. Litvinovich, F. Lombardi, P. Lombardi, L. Ludhova, G. Lukyanchenko, L. Lukyanchenko, I. Machulin, G. Manuzio, S. Marcocci, J. Maricic, J. Martyn, E. Meroni, M. Meyer, M. Misiaszek, L. Papp, O. Penek, L. Pietrofaccia, N. Pilipenko, A. Pocar, A. Porcelli, G. Raikov, G. Ranucci, A. Razeto, A. Re, M. Redchuk, A. Romani, N. Rossi, S. Rottenanger, S. Schönert, D. Semenov, M. Skorokhvatov, O. Smirnov, A. Sotnikov, L.F.F. Stokes, Y. Suvorov, R. Tartaglia, G. Testera, J. Thurn, M. Toropova, E. Unzhakov, A. Vishneva, R.B. Vogelaar, F. von Feilitzsch, S. Weinz, M. Wojcik, M. Wurm, Z. Yokley, O. Zaimidoroga, S. Zavatarelli, K. Zuber, G. Zuzel

Subject: Physical Sciences, Particle And Field Physics Keywords: solar neutrinos; neutrino oscillation; Borexino

Online: 19 October 2018 (11:49:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201808.0387.v1

FTIR Spectroscopy of the Regulated Asbestos Amphiboles

Giancarlo Della Ventura, Ruggero Vigliaturo, Reto Gieré, Simone Pollastri, Alessandro F. Gualtieri, Gianluca Iezzi

Subject: Environmental And Earth Sciences, Environmental Science Keywords: regulated asbestos amphiboles; FTIR spectroscopy, FEG-FESEM, TEM, SAED patterns

Online: 21 August 2018 (16:30:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0319.v1

Gallstone Magnesium Distributions from Optical Emission Spectroscopy

Ashok K. Pathak, Nilesh K. Rai, Rohit Kumar, Pradeep K. Rai, Awadhesh K. Rai, Christian G. Parigger

Subject: Physical Sciences, Applied Physics Keywords: laser-induced breakdown spectroscopy; atomic spectroscopy; plasma spectroscopy; laser spectroscopy; physical properties of biomaterials

Online: 18 July 2018 (08:34:46 CEST)

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Preprint REVIEW | doi:10.20944/preprints201805.0473.v1

Electron Microscopy and Spectroscopy in the Analysis of Friction and Wear Mechanisms

Quanshun Luo

Subject: Chemistry And Materials Science, Surfaces, Coatings And Films Keywords: electron microscopy; energy dispersive X-ray spectroscopy (EDX); electron energy loss spectroscopy (EELS); worn surface analysis; tribofilms

Online: 31 May 2018 (11:27:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.2062.v1

Applying Nitrogen Fertilizer at the Full Heading Stage Has the Potential to Decrease Brown Rice Cd Accumulation

Zhang Yusheng, Xiao Huan, Chen QiaoMao, Jiang Qi, Hejun Ao

Subject: Environmental And Earth Sciences, Environmental Science Keywords: Rice cadmium; Nitrogen fertilizer; Fe plaque; Cell wall; available Cd

Online: 31 October 2023 (10:47:44 CET)

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Soil cadmium (Cd) contamination has become a serious problem in China. In this study, the goals of the field experiments were to understand how the application of nitrogen fertilizer at the full heading stage and filling stage reduced the uptake of Cd in rice by affecting the distribution of Cd in iron plaques on the root surfaces and subcellular in the root and flag leaf. The hydroponic culture experiments aimed to explore the effect of interaction or deficiency of nitrogen and cadmium on cadmium accumulation in rice at the late growth stage. The results showed that under the condition of having enough nitrogen supply during the early growth stage, applying nitrogen fertilizer during the full heading stage and filling stage resulted in a significant increase in the concentration of Fe and Cd on the root plaques at the milk stage and mature stage. Additionally, it increased the concentration and proportion of Cd in the soluble fraction of subcellular in the flag leaves at the milk stage. On the other hand, when there was a deficiency of nitrogen, the concentration of Fe in the root plaques increased significantly, while the concentration of Cd in the root plaques decreased significantly. Moreover, the proportion of Cd in the flag leaf cell walls increased significantly. Regardless of whether there was sufficient or deficient nitrogen supply during the early growth stage, applying nitrogen at the full heading stage reduced the Cd concentration in brown rice by 35.11% and 57.25%, respectively. Under hydroponic culture conditions with both Cd exposure and later-stage nitrogen supply significantly increased the Cd concentration in brown rice. However, in the absence of Cd, nitrogen supply significantly reduced the Cd concentration in brown rice. The accumulation of Cd in brown rice was significantly correlated with the accumulation of Fe and Mn at the late growth stage. Our findings indicate that when there is sufficient nitrogen nutrition during the early growth stage of rice, topdressing nitrogen fertilizer at the full heading stage combined with lime with mineral element fertilizers such as Fe and Mn is an effective approach to reduce the presence of cadmium in rice grains.

Preprint REVIEW | doi:10.20944/preprints202406.0390.v1

Quantitative Structure-Activity Relationship of Alkaloids with Immunomodulatory Effects

ALMA ANGELICA CONTRERAS ENCINAS, JUAN CARLOS GALVEZ RUIZ, JOSE DIAZ CHAVEZ, DORA VALENCIA, Jael T. Quintero-Vargas

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: alkaloids; secondary metabolites; structure-activity relationship; immune system; immunomodulatory

Online: 7 June 2024 (02:48:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202204.0186.v1

Spatial and In-Depth Distribution of Soil Salinity and Heavy Metals (Pb, Zn, Cd, Ni, Cu) in Arable Irrigated Soils in Southern Kazakhstan

Małgorzata Suska-Malawska

Subject: Environmental And Earth Sciences, Environmental Science Keywords: arid regions; Kazakhstan; irrigated soils; soil salinity; heavy metals

Online: 20 April 2022 (08:53:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1506.v1

Validity of LiPON Conductivity Determined by Impedance Spectroscopy

Alexander Rudy, Alena Novozhilova, Julia Egorova

Subject: Chemistry And Materials Science, Electrochemistry Keywords: ; solid electrolyte; impedance spectroscopy; absorption current; electric double layer; Debye length; drift conductivity ;

Online: 23 April 2024 (09:47:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0070.v1

Mechanical Spectroscopy Study of CrNiCoFeMn High Entropy Alloys

Enrico Gianfranco Campari, Angelo Casagrande

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: high entropy alloys; selective laser melting; microstructure; mechanical properties; damping; Young’s modulus

Online: 6 April 2023 (04:46:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202110.0432.v1

Silver Flowerlike Structures for Surface-Enhanced Raman Spectroscopy

Victor Genchev Ivanov, Gitchka Tsutsumanova, Neno Todorov, Stoyan Russev, Miroslav Abrashev, Alexey Lukoyanov

Subject: Chemistry And Materials Science, Nanotechnology Keywords: SERS; SERS substrates; nanoflowers; ; surface plasmon; nanocavity resonator

Online: 28 October 2021 (10:15:52 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202311.1154.v2

Thermal, Spectroscopy, and Mechanical Properties of Thermodegradable Polymers and Reinforcements: A Green Approach

João J. Melo dos Santos, Evanimek B. Sabino da Silva, Carlos A. Paskocimas

Subject: Chemistry And Materials Science, Nanotechnology Keywords: Nanocellulose; Biodegradability; Sustainability; Additive manufacturing; Functional materials.

Online: 20 November 2023 (14:01:39 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0271.v1

Probing the Metal-TMDC Interface and Substrate Impact via Raman and Photoluminescence Spectroscopy

Muhammad Umair, Shahzad Akhtar

Subject: Physical Sciences, Condensed Matter Physics Keywords: Metal_2D semiconductor interface; 2D semiconductor material; Raman and Photoluminescence Spectroscopy

Online: 9 November 2023 (02:36:21 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.0640.v1

Opto-Magnetic Imaging Spectroscopy Based on Hyper Convolution Spectra and Its Applications

Lidija Matija, Branislava Jeftic, Aleksandra Dragicevic, Ivana Stanković, Vlado Antonic, Djuro Koruga

Subject: Biology And Life Sciences, Biophysics Keywords: hyper convolution spectra; epithelial tissues; paramagnetism; diamagnetism; opto-magnetic images; cancer detection; accuracy

Online: 9 November 2023 (14:24:05 CET)

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Working Paper REVIEW

Structural Changes of Hydroxylapatite During Plasma Spraying: Raman and NMR Spectroscopy Results

Robert Bertram Heimann

Subject: Chemistry And Materials Science, Biomaterials Keywords: hydroxylapatite, oxyhydroxylapatite, oxyapatite, tricalcium phosphate, tetracalcium phosphate, Raman spectroscopy, MAS-CP NMR spectroscopy, 2D-HETCOR NMR spectroscopy.

Online: 5 August 2021 (11:06:47 CEST)

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Preprint REVIEW | doi:10.20944/preprints201812.0370.v1

Theoretical Study of Memristor and \\ Time Reversal based\\ Nonlinear Elastic Wave Spectroscopy

Sadataka Furui, Serge Dos Santos

Subject: Chemistry And Materials Science, Nanotechnology Keywords: Memristor, TR-NEWS, HEU, DORT

Online: 31 December 2018 (11:16:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints202409.1367.v1

Parallel Simplex: An Alternative to Classical Experimentation: Case Study

Francisco Zorrilla Briones, Inocente Yuliana Meléndez Pastrana, Manuel Alonso Rodríguez-Morachis, José Luís Anaya Carrasco

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: optimization; design of experiments; variable simplex; evolutive operations; canonical analysis; RSM

Online: 19 September 2024 (08:52:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1301.v1

Assessing the Stress Induced by Novel Packaging in GaN Hemt Devices via Raman Spectroscopy

Zainab Dahrouch, Giuliana Malta, Moreno d’Ambrosio, Angelo Alberto Messina, Mattia Musolino, Alessandro Sitta, Michele Calabretta, Salvatore Patanè

Subject: Physical Sciences, Applied Physics Keywords: AlGaN/GaN high electron mobility transistor; micro-raman spectroscopy; power electronic; packaged device; wafer-level

Online: 22 April 2024 (12:11:17 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202011.0652.v1

Hypersonic Imaging and Emission Spectroscopy of Hydrogen and Cyanide Following Laser-Induced Optical Breakdown

Christian G Parigger, Christopher M Helstern, Ghaneshwar Gautam

Subject: Physical Sciences, Acoustics Keywords: laser–plasma interactions; plasma dynamics and flow; hypersonic flows; optical emission spectroscopy; hydrogen; cyanide; Abel inversion; astrophysics; white dwarf stars

Online: 25 November 2020 (16:23:06 CET)

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Preprint ARTICLE | doi:10.20944/preprints202407.2045.v1

Characterization of Nile Red-Stained Microplastics through Fluorescence Spectroscopy

Suparnamaaya Prasad, Andrew Bennett, Michael Triantafyllou

Subject: Environmental And Earth Sciences, Pollution Keywords: microplastics; fluorescence spectroscopy; Nile Red; pollution monitoring

Online: 25 July 2024 (12:54:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202312.0151.v1

Structural Analyses of Apricot Pectin Polysaccharides by NMR Spectroscopy

Zayniddin Kamarovich Muhidinov, Matlub H. Rahmonov, Abduvaly Jonmurodov, Jamshed Bobokalonov, Lin Shu Liu, Gary Strahan

Subject: Chemistry And Materials Science, Biomaterials Keywords: apricot pectin; NMR spectroscopy; RG-I; HG; RG-II; arabinogalactan; molecular weight; conformation

Online: 4 December 2023 (06:51:18 CET)

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The fine structure of Apricot pectin polysaccharides is discussed from both literature and recent work we have performed. Structural characterization utilized 1D and 2D homo- and hetero-nuclear NMR spectroscopy including results from High Performance Size Exclusion Chromatography (HP-SEC), HP Anion-Exchange Chromatography with Pulsed Amperometric Detection (HPAEC-PAD) and FTIR spectroscopy. The purified pectin fraction (F1AP) was found to be composed of D-galacturonic acid, L-rhamnose, D-arabinose and D-galactose in a 1.0 : 0.1 : 0.36 : 0.12 molar ratio, respectively, which is consistent with a pectin RG-1 branched with arabinogalactan side chain polysaccharides, and has a weight-average molecular weight of approximately 1588.2 kDa. The slope of the hydrodynamic radius versus the molar mass was 0.57, indicating the presence of coil conformations. The results from HPAEC-PAD, HPSEC and NMR spectroscopy (1H, 13C, zTOCSY, HSQC, HSQCTOXY and HMBC) demonstrated that F1AP fine fraction F1AP1, derived from original F1AP, has a backbone of (1→4)-linked -D-galacturonic acid and -L-rhamnopyranosyl residues branched with arabinogalactan of multiply glycosidic linkages of T- α-Araf, 3-α-Araf, 5-α-Araf, T- α -Arap, 2- α-Arap side chains, having methyl and acetylated groups, and has high molecular weights (1945 kDa). While the other F1A6 fraction consists predominately of an HG region of pectin polysaccharides with low molecular weights (117.5 kDa), less aggregated. The F1AP1 polysaccharide was highly viscous and its hydrodynamic radius was 64,3 nm. The exponent b of Rh-Mw (conformation plot) was determined to be 0.48, indicating a compact flexible coil conformation of the macromolecule in solution. However, the F1AP6 fraction of apricot fruits belong to backbone of repeats units of [-(1→4)-α-D-GalpA-1]n – both HG and partly contents RG-II polysaccharides, bearing heterosugar sidechains, including α-Ara, α -Rha and β-Gal residues and adopt more stiffness rod like conformation.

Preprint ARTICLE | doi:10.20944/preprints202307.2081.v1

Viability of ABO Blood Typing with ATR-FTIR Spectroscopy

Alfonso Fernández-González, Álvaro Obaya, Christian Chimeno-Trinchet, Tania Fontanil, Rosana Badía-Laíño

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: FTIR; ATR-FTIR; Linear Discriminant Analisis; LDA; Naif Bayessian Classifier; NBC; chemometrics

Online: 31 July 2023 (09:49:38 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202302.0430.v1

Cyanide Molecular Laser-Induced Breakdown Spectroscopy with Current Databases

Christian Parigger

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: diatomic molecules; cyanide; laser-plasma; data analysis; laser induced breakdown spectroscopy; combustion; time-resolved spectroscopy; spectra fitting program; astrophysics

Online: 27 February 2023 (02:28:52 CET)

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Preprint ARTICLE | doi:10.20944/preprints202108.0497.v1

Close-range Hyperspectral Spectroscopy Reveals Leaf Water Content Dynamics

Samuli Junttila, Teemu Hölttä, Ninni Saarinen, Ville Kankare, Tuomas Yrttimaa, Juha Hyyppä, Mikko Vastaranta

Subject: Biology And Life Sciences, Plant Sciences Keywords: leaf water content; hyperspectral spectroscopy; leaf water potential; drought; diurnal cycle; plant water status; relative water content; equivalent water thickness; Dracaena marginate; water stress; leaf water variation

Online: 25 August 2021 (15:00:37 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201911.0028.v1

Hydrogen Sensor Based on Tunable Diode Laser Absorption Spectroscopy

Viacheslav Avetisov, Ove Bjoroey, Junyang Wang, Peter Geiser, Ketil Gorm Paulsen

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: gas sensor; hydrogen sensor; diode laser; TDLAS; WMS; absorption spectroscopy; laser spectroscopy; hydrogen

Online: 3 November 2019 (18:21:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints201809.0019.v1

Positron Spectroscopy of Polyvinylidene Fluoride after Helium Ions Irradiation

Roman Laptev, Jinzhe Lyu, Natalya Dubrova

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: positron annihilation; free volume; crystallinity; XRD; polyvinylidene fluoride; helium ions; absorbed dose; cross-linking; degradation; Braking ability; linear absorption coefficient; Backscatter coefficient; bremsstrahlung

Online: 3 September 2018 (10:48:30 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1548.v1

Quality Control of Medical Food Using Near Infrared Spectroscopy and Multivariate Calibration Models

Hudson Pimentel Costa, Lívia Paulia Dias Ribeiro, Claudete Fernandes Pereira, Gisele Simone Lopes, Augusto Reinaldo Pimentel Guimarães, João da Silva Oliveira, Maria Socorro Moura Rufino

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Medical food; NIRS; Quality control

Online: 21 August 2024 (18:14:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202207.0312.v1

Rapid Assessment of Lipidomics Sample Purity and Quantity Using Fourier-Transform Infrared Spectroscopy

Harley Robinson, Jeffrey Molendijk, Alok K. Shah, Tony Rahman, Gregory J. Anderson, Michelle M. Hill

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: lipids; phospholipids; sphingolipids; triglycerides; FTIR; mass spectrometry; chemical contaminants

Online: 21 July 2022 (08:03:24 CEST)

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Preprint REVIEW | doi:10.20944/preprints202203.0400.v1

Probing Nuclear Dipole Moments and Magnetic Shielding Constants Through 3-Helium NMR Spectroscopy

Włodzimierz Makulski

Subject: Chemistry And Materials Science, Physical Chemistry Keywords: nuclear magnetic dipole moment; nuclear magnetic shielding; gas-phase NMR

Online: 31 March 2022 (08:00:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0324.v1

Time-Resolved Emission Spectroscopy of Atomic and Molecular Species in Laser-Induced Plasma

Christian Parigger, Ghaneshwar Gautam, Christopher M Helstern

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: laser-induced plasma; atomic and molecular spectroscopy; Abel inversion; hydrogen; cyanogen

Online: 18 July 2018 (09:31:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201804.0163.v1

Microfluidic Cultivation and Laser Tweezers Raman Spectroscopy of E. coli under Antibiotic Stress

Zdeněk Pilát, Silvie Bernatová, Jan Ježek, Johanna Kirchhoff, Astrid Tannert, Ute Neugebauer, Ota Samek, Pavel Zemánek

Subject: Physical Sciences, Optics And Photonics Keywords: Raman microspectroscopy; optical tweezers; optofluidics; E. coli; antibiotics

Online: 12 April 2018 (08:37:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201708.0019.v1

Reconfigurable, Multi-channel and Modular Bioimpedance Spectroscopy System on Field Programmable Gate Arrays

Anis Nurashikin Nordin, Ahmed Al-Hashimi, Amelia Wong Azman

Subject: Engineering, Electrical And Electronic Engineering Keywords: Bioimpedance Spectroscopy; Field Programmable Gate Array; Digital Auto Balance Bridge; Multichannel data acquisition;

Online: 4 August 2017 (16:05:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1080.v1

Psychometric Properties of the Greek Version of the Connor- Davidson Resilience Scale (CD-RISC-10) in a Sample of Nurses

Petros Galanis, Maria Elissavet Psomiadi, Chrysovalantis Karagkounis, P Liamopoulou, Georgios Manomenidis, George Panayiotou, Thalia Bellali

Subject: Public Health And Healthcare, Public, Environmental And Occupational Health Keywords: CD-RISC; translation; Greek; validation; resilience; nurses

Online: 15 August 2023 (08:37:37 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202110.0186.v1

Experimental and Density Functional Theory (DFT): a Dual Approach for the Adsorption of Cd (II) Ion from Aqueous Solution by Starch-Based Activated Carbon

Saad Melhi, Saeed Ullah Jan, Adnan Ali Khan, Khan Badshah, Saeed Ullah, Bushra Bostan, Zeliha Selamoglu

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Adsorption; DFT; Starch-based Activated Carbon; Kinetics; Thermodynamics

Online: 12 October 2021 (14:58:07 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.0498.v1

Assessment of the Biodegradability and Compatibility of Finished Leathers: Analysis Using Spectroscopy and Thermal Methods

Alberto Vico López, Marcelo Bertazzo, Maria I. Maestre-Lopez, Francisca Arán-Ais, Elena Orgilés-Calpena, Frutos C. Marhuenda-Egea

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: biodegradation; composting; leather finishing; bio-based materials; Fourier transform infrared spectroscopy; thermogravimetric analysis; solid-state nuclear magnetic resonance

Online: 7 June 2024 (14:34:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202002.0343.v1

Towards Heralded Two-Photon Absorption and Two-Photon Excited Fluorescence for Quantum Microscopy and Spectroscopy

Andreas Jechow

Subject: Physical Sciences, Optics And Photonics Keywords: multi-photon processes; quantum optics; photon statistics; fluorescence

Online: 24 February 2020 (02:57:17 CET)

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Preprint ARTICLE | doi:10.20944/preprints201906.0264.v1

Temporally and Spatially Resolved Emission Spectroscopy of Cyanide, Hydrogen and Carbon in Laser-Induced Plasma

Christian G. Parigger, Christopher M. Helstern, Ghaneshwar Gautam

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: laser-induced plasma; atomic spectroscopy; molecular spectroscopy; cyanide; hydrogen; carbon

Online: 26 June 2019 (07:49:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202311.0028.v1

Mossbauer Spectroscopy Investigation of Thulium Oxide-Hematite Magnetic Ceramic Nanostructures

Elena Stipetich, Sarah Glasser, Monica Sorescu

Subject: Physical Sciences, Condensed Matter Physics Keywords: magnetic materials; nanocomposites; Mossbauer spectroscopy

Online: 1 November 2023 (07:56:48 CET)

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Preprint ARTICLE | doi:10.20944/preprints202306.0106.v1

VEGF Detection via Impedance Spectroscopy on Surface Functionalized Interdigitated Biosensor

Yue-Der Lin, Serge Ismael Zida, Chu-Chun Yang, Yit Lung Khung

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: DNA Aptamer; Interdigitated Sensor; Impedance Spectroscopy; Vascular Endothelial Growth Factor (VEGF).

Online: 1 June 2023 (15:34:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1640.v1

Forensic Assessment of Textile Fibers Using Micro FTIR-ATR Spectroscopy

Samara Testoni, Rafael Ortiz, Kristiane Mariotti, Flavio Camargo

Subject: Chemistry And Materials Science, Paper, Wood And Textiles Keywords: forensic sciences; crime scene; trace evidence; spectroscopy; polyethylene.

Online: 23 May 2023 (10:31:46 CEST)

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Preprint BRIEF REPORT | doi:10.20944/preprints202211.0239.v2

Methylidyne Cavity Ring-Down Spectroscopy in a Microwave Plasma Discharge

László Nemes, Christian Parigger

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: molecular spectroscopy; diatomic molecules; cavity ring-down spectroscopy; absorption spectroscopy; methylidyne; line strength data; plasma physics; astrophysics

Online: 19 December 2022 (02:45:09 CET)

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Preprint REVIEW | doi:10.20944/preprints202012.0492.v1

Operando Infrared Spectroscopy for the Analysis of Gas-processing Metalloenzymes

Sven Timo Stripp

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: Biophysics; Spectroscopy; Physical Chemistry; Enzymes; Bioinorganic Chemistry

Online: 21 December 2020 (10:22:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints202010.0402.v1

Analytical Model for Blood Glucose Detection using Electrical Impedance Spectroscopy

Bruna G. Pedro, David W.C. Marcôndes, Pedro Bertemes-Filho

Subject: Engineering, Automotive Engineering Keywords: Blood Glucose; Analytical Model; Impedance Spectroscopy; Noninvasive Monitoring

Online: 19 October 2020 (16:57:26 CEST)

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