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Preprint ARTICLE | doi:10.20944/preprints202306.0699.v1

Unleashing the Ligno-Hemicellulolytic Enzyme Potential of Pyrenophora phaeocomes S-1: A Solid State Fermentation Approach for Efficient Delignification of Corn Stover

Shubhangi Rastogi, Raman Soni, Apurav Sharma, Sanjeev Kumar Soni

Subject: Biology And Life Sciences, Life Sciences Keywords: Biological pretreatment; Ligno-hemicellulolytic enzymes; Corn stover; Enzymatic hydrolysis; Pyrenophora phaeocomes S-1

Online: 9 June 2023 (10:28:39 CEST)

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Preprint BRIEF REPORT | doi:10.20944/preprints202211.0469.v1

Knowledge of Diabetes among Adults at High Risk for Type 2 Diabetes in Kerala, India

Thirunavukkarasu Sathish, Kavumpurathu Raman Thankappan, Jeemon Panniyammakal, Brian Oldenburg

Subject: Social Sciences, Behavior Sciences Keywords: diabetes knowledge; diabetes; prediabetes; prevention; health promotion; awareness

Online: 25 November 2022 (06:02:45 CET)

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Preprint ARTICLE | doi:10.20944/preprints202104.0076.v2

On the Indian Tradition of Mathematical Names: A Scientific Analysis

Ashish Karn, Brett Rosiejka, Pankaj Badoni, Raman Kumar Singh

Subject: Computer Science And Mathematics, Mathematics Keywords: Mathematical names; Hindu mathematical tradition; Indian social psyche; Mathematics and religion; Mathematics and society; Hindu mathematics

Online: 5 April 2021 (14:42:47 CEST)

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The current paper explores the potential interlink between names of individuals in a society and its collective social consciousness, particularly with reference to the pervasive occurrence of the ‘mathematical names’ in the current Hindu society in the Indian subcontinent and beyond. Initially, an attempt is made to put things into mathematical perspective by drawing a quick sketch of some of the stellar achievements of the Indian mathematicians. Under the six broad categories of geometry, trigonometry, numeration, arithmetic, algebra, and mathematics in the Vedic tradition, a concise simple description of these subdivisions is presented, underlining the names of the concepts and terms, sometimes by producing the textual references. Then, upon identification of such mathematical terms, an attempt is made to juxtapose these with the names current in the Indian Hindu society. By employing an extensive dataset of university student names in India and the directories of Facebook and LinkedIn, we produce both qualitative and quantitative evidence of the presence of such names in the Indian subcontinent. Evidently, these names reflect the impressions of the tremendously rich mathematical heritage left by the Hindu stalwart mathematicians. This hypothesis has also been examined by taking surveys of people bearing these mathematical names, as well as by documenting the ‘conscious procedures’ that go behind the naming of a Hindu Indian child. In trying to investigate if such a phenomenon is unique to the Indian tradition, a stark contrast with the ‘names in mathematics’ as prevalent in the European mathematical traditions is presented, as cultural roots of mathematics are explored. Further, we ascribe the presence of these names as the extant remains of the colossal impact of multifarious mathematical traditions existing in India. Interestingly, the present research also brings to the fore, certain unseen facets of the Indian Hindu society as regards the education of mathematics to women – through an indirect exploration of their names. We also show that the pervasive occurrence of these names is not merely the result of semantic chance events, but denotes the richness of the Indian mathematical legacy. Next, we also present cross-cultural comparisons to show the uniqueness of Indian mathematical and scientific traditions that led to the pervasiveness of ‘mathematical names’ in India. Finally, an attempt is made to clarify some subtle points on the associations between mathematics and religion in India and other cultures of the world. It is sincerely hoped that the present study may shed light on the cultural roots of mathematics and may furnish a new dimension in the study of mathematics, culture and civilizations across the world.

Preprint ARTICLE | doi:10.20944/preprints201703.0018.v1

Enhanced Plant Performance in Cicer arietinum L. due to the Addition of Combination of Plant Growth Promoting Bacteria

María Pérez-Fernández, Valentine Alexander

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: Cicer arietimum; Indole Acetic Acid; Bacillus megaterium; Pseudomonas putida; Mesorhizobium ciceri

Online: 2 March 2017 (16:34:44 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.1324.v1

Spatial-Multitemporal Analysis of Heatwaves in Thailand: Discrepancies between In-Situ Air Temperature and Remote Sensing-Derived Land Surface Temperature

Thitimar Chongtaku, Attaphongse Taparugssanagorn, Hiroyuki Miyazaki, Takuji W Tsusaka

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: heat wave; heatwaves detection; land surface heatwaves; data gap-filling; machine learning algorithm; random forest regression; spatio-temporal databases; geospatial analysis; air temperature; land surface temperature

Online: 23 February 2024 (08:40:08 CET)

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Preprint REVIEW | doi:10.20944/preprints202402.1187.v1

Toward Enhanced Plant Immunity: Unveiling the Role of Brassinosteroids in Abiotic and Biotic Stress Response

Barbara Sawicka*, Piotr Barbaś, Bernadetta Bienia, Dominika Skiba, Piotr Pszczółkowski, Barbara Krochmal-Marczak

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: plant hormones; gene expression; BR functions; antimicrobial actions; immunity mechanisms; plant stress

Online: 21 February 2024 (04:00:51 CET)

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Preprint ARTICLE | doi:10.20944/preprints202404.0642.v1

Near-Surface Dispersion and Current Observations by Dye, Drifter, and HF Radar in Coastal Water

Keunyong Kim, Tran Thi My Hong, Kyu‐Min Song, Yeong Baek Son, Young-Gyu Park, Geun-Ho Kwak, Jun Myoung Choi

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: Surface current; contaminant dispersion; dye; drifter; HF radar

Online: 9 April 2024 (11:51:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0331.v1

DAE-GAN: Underwater Image Super-Resolution Based on Degradation-Aware Attention Enhanced Generative Adversarial Network

Miaowei Gao, Zhongguo Li, Qi Wang, Wenbin Fan

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: underwater image super resolution; degradation model; generative adversarial network; atten-tion mechanism

Online: 4 April 2024 (17:36:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202001.0380.v1

Effect of Sowing Date, Seed Rate and Row Spacing on Productivity and Profitability of Barley (Hordeum vulgare) in North India

Amarjeet Amarjeet, Bikram Singh, Jitender Kumar, Manoj Kumar, Raman Sharma, Prashant Kaushik

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: barley; sowing date; seed rate; row spacing; yield

Online: 31 January 2020 (05:21:36 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0126.v1

SkinLiTE: Lightweight Supervised Contrastive Learning Model for Enhanced Skin Lesion Detection and Disease Typification in Dermoscopic Images

Salha M. Alzahrani

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: Skin Lesions; Dermoscopic Images; Supervised Contrastive Learning; Skin Disease Classification

Online: 5 March 2024 (02:22:55 CET)

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This study introduces SkinLiTE, a lightweight supervised contrastive learning model, tailored to enhance the detection and typification of skin lesions in dermoscopic images. The core of SkinLiTE lies in its unique integration of supervised and contrastive learning approaches, which leverages labeled data to learn generalizable representations. This approach is particularly adept at handling the complexities and imbalances inherent in skin lesions datasets. The methodology encompasses a two-phase learning process. In the first phase, SkinLiTE utilizes an encoder network and a projection head to transform and project dermoscopic images into a feature space where contrastive loss is applied, focusing on minimizing intra-class variations while maximizing inter-class differences. The second phase freezes the encoder's weights, leveraging the learned representations for classification through a series of dense and dropout layers. The model was evaluated using three datasets from Skin Cancer ISIC 2019-2020, covering a wide range of skin conditions. SkinLiTE demonstrated superior performance across various metrics—accuracy, AUC , and F1 score—particularly when compared with traditional supervised learning models. Notably, SkinLiTE achieved an accuracy of 0.9087 using AugMix augmentation for binary classification of skin lesions. It also showed comparable results with the state-of-the-art approaches of ISIC challenge without relying on external data, underscoring its efficacy and efficiency. The results highlight the potential of SkinLiTE as a significant step forward in the field of dermatological AI, offering a robust, efficient, and accurate tool for skin lesion detection and classification. Its lightweight architecture and ability to handle imbalanced datasets make it particularly suited for integration into Internet of Medical Things environments, paving the way for enhanced remote patient monitoring and diagnostic capabilities. This research contributes to the evolving landscape of AI in healthcare, demonstrating the impact of innovative learning methodologies in medical image analysis.

Preprint ARTICLE | doi:10.20944/preprints202306.0442.v1

Synthesis of Asymmetrical CsPbBr₃/TiO₂ Nanocrystals with Enhanced Stability and Photocatalytic Properties

Wanli Liu, Jinfeng Liu, Xiaoqian Wang, Jiazhen He, Yuqing Li, And Yong Liu

Subject: Chemistry And Materials Science, Nanotechnology Keywords: perovskite; core-shell; heterostructure; stability; photocatalyst

Online: 6 June 2023 (10:13:35 CEST)

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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/preprints202403.1003.v1

Enhanced Energy Absorption in Bioinspired Combined TPMS-Gyroid and Walled TPMS-Gyroid Lattice Structure Manufactured via Fused Filament Fabrication (FFF)

Dawit Bogale Alemayehu, Masahiro Todoh

Subject: Engineering, Mechanical Engineering Keywords: Keywords; bio-inspired; gyroid lattice, Boolean subtraction; finite element analysis; plastic plateau; densification; energy absorption; relative density; size effect

Online: 18 March 2024 (10:39:43 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0176.v1

Surface Thermodynamic Properties of 3D/4D Printing Poly Lactic Acid by Inverse Gas Chromatography

Tayssir Hamieh

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: 3D/4D printing; adhesion; London and polar surface energies; glass transition; enthalpic and entropic Lewis’ s acid– base constants; acid and base surface energies

Online: 4 March 2024 (14:41:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints202404.0864.v1

Design of a Dispersive 1064 nm Fiber Probe Raman Imaging Spectrometer and Its Application to Human Bladder Resectates

Juan David Munoz-Bolanos, Tanveer Ahmed Shaik, Arkadiusz Miernik, Juergen Popp, Christoph Krafft

Subject: Biology And Life Sciences, Life Sciences Keywords: bladder tumor; Raman imaging; 1064 nm; cluster analysis; Python toolbox

Online: 15 April 2024 (09:07:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0003.v1

A Comparative Analysis of Naïve Exosomes and Enhanced Exosomes with a Focus on the Treatment Potential in Ovarian Disorders

Mohammad Mousaei Ghasroldasht, Farzana Liakath Ali, Hang-Soo Park, Morteza Hadizadeh, Shao Huan Samuel Weng, Allen Huff, Somayeh Vafaei, Ayman Al-Hendy

Subject: Biology And Life Sciences, Other Keywords: enhanced exosomes; ovarian cancer; polycystic ovary syndrome; poor ovarian reserve; premature ovarian insufficiency

Online: 1 April 2024 (09:53:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201801.0181.v1

Optical Aggregation of Gold Nanoparticles for SERS Detection of Proteins and Toxins in Liquid Environment: Towards Ultrasensitive and Selective Detection

Antonino Foti, Cristiano D'andrea, Valentina Villari, Norberto Micali, Maria Grazia Donato, Barbara Fazio, Onofrio Maria Maragò, Raymond Gillibert, Marc Lamy de La Chapelle, Pietro Giuseppe Gucciardi

Subject: Chemistry And Materials Science, Nanotechnology Keywords: SERS; biosensor; gold nanoparticles; aptamers; toxins; hemeprotein; optical forces; optical tweezers; optical patterning; colloids.

Online: 19 January 2018 (09:34:08 CET)

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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/preprints202309.0034.v1

Investigation of Optical Cavity Dynamics with Raman and Yb-Doped Gain Media Integration

Efrain Mejia-Beltran, Oscar J. Ballesteros-Llanos

Subject: Physical Sciences, Optics And Photonics Keywords: Raman Fiber Lasers; Ytterbium-doped Fiber Lasers; Stimulated Raman Scattering; Amplified Spontaneous emission

Online: 1 September 2023 (09:42:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202401.0738.v2

Application of Surface-Stress Driven Model for Higher Vibrations Modes of Functionally Graded Nanobeams

Giuseppe Lovisi, Luciano Feo, Annavirginia Lambiase, Rosa Penna

Subject: Chemistry And Materials Science, Nanotechnology Keywords: Functionally Graded (FG) Materials; Bernoulli-Euler Nanobeams; Stress-Driven Nonlocal Model; Free Vibration Analysis; Surface Energy Effects; Higher Vibration Modes

Online: 11 January 2024 (12:23:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints201701.0036.v1

Optimization of Ultrasonic-Assisted Extraction by Response Surface Methodology with Maximal Phenolic Yield and Antioxidant Activity from Acer truncatum Leaves

Lingguang Yang, Peipei Yin, Hang Fan, Qiang Xue, Ke Li, Xiang Li, Liwei Sun, Yujun Liu

Subject: Biology And Life Sciences, Plant Sciences Keywords: Acer truncatum leaves; ultrasonic-assisted extraction; response surface methodology; phenolics; antioxidant activity; UPLC-QTOF-MS/MS

Online: 9 January 2017 (04:16:01 CET)

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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/preprints202302.0373.v1

Did Virtual Patients Help Medical Students Learn Clinical Skills? Impact Study During COVID-19

Prema Nedungadi, Romita Jina, George Mathew, Ramaraju Rudraraju, Raghu Raman

Subject: Medicine And Pharmacology, Other Keywords: sustainable development; Virtual Patients; simulation; clinical skills; SDG

Online: 22 February 2023 (04:07:13 CET)

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Preprint REVIEW | doi:10.20944/preprints202403.0327.v1

The Therapeutic Trip of Melatonin Eye Drops: From the Ocular Surface to the Retina

Dario Rusciano, Cristina Russo

Subject: Medicine And Pharmacology, Ophthalmology Keywords: melatonin; drug delivery; eye diseases

Online: 6 March 2024 (10:55:34 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.1133.v1

Development of Aptamer-Based Gold Nanoparticle Lateral Flow Test Strips for Detection of SARS-CoV-2 S Protein on the Surface of Cold Chain Food Packaging

Xiaotong Li, Jiachen Wang, Xiaona Fang, Lianhui Zhao, Zhaofeng Luo, Yiyang Dong

Subject: Biology And Life Sciences, Virology Keywords: SARS-CoV-2; S protein; COVID-19; lateral flow test strips; AuNPs; aptamer

Online: 20 February 2024 (11:55:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints201809.0377.v1

Plasmonic Sensing Characteristics of Gold Nanorods with Large Aspect Ratios

Chao Zhuang, Yifan Xu, Ningsheng Xu, Jinxiu Wen, Huanjun Chen, Shaozhi Deng

Subject: Chemistry And Materials Science, Nanotechnology Keywords: large aspect ratios; gold nanorods; refractive index sensitivities; SERS; plasmonic sensing

Online: 19 September 2018 (09:40:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0240.v1

Separate Hydrolysis and Fermentation of Kitchen Waste Residues Using Multi-Enzyme Preparation from Aspergillus niger P-19 for Production of Biofertilizer Formulations

Apurav Sharma, Sakshi Dogra, Bishakha Thakur, Jyoti Yadav, Raman Soni, Sanjeev Kumar Soni

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: Kitchen waste; Enzyme; Enzymatic hydrolysis; Biofertilizer

Online: 4 May 2023 (08:51:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202402.1422.v1

Daptomycin Liposomes Exhibit Enhanced Activity against Staphylococci Biofilms Compared to Free Drug

Foteini Gkartziou, Maria Plota, Charikleia Kypraiou, Iti Gauttam, Kolonitsiou Fevronia, Pavlos Klepetsanis, Iris Spiliopoulou, Sophia G Antimisiaris

Subject: Medicine And Pharmacology, Other Keywords: Daptomycin; liposomes; zeta-potential; bacteriostatic; biofilm; growth inhibition; MRSA; MRSE; Integrity

Online: 26 February 2024 (12:00:24 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0866.v1

Ageing of a Poly(vinyl Acetate)-Based White Glue and Its Durability in Contemporary Artworks

Massimo Lazzari, Thais López Morán

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: natural ageing; accelerated degradation; oxidation; plasticizers, ATR-FTIR spectroscopy; surface enhanced Raman spectroscopy (SERS)

Online: 17 March 2024 (16:00:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints202404.0803.v1

Feasibility of Using SWIR Transformed Reflectance (STR) in Place of Surface Temperature (Ts) for the Mapping of Irrigated Landcover

Mohammad Abuzar, Kathryn Sheffield, Andy McAllister

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: Irrigated landcover; thresholding method; Central Goulburn District

Online: 11 April 2024 (10:03:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1898.v1

A Facile Growth, Optical Behavior of Organic Nonlinear Optical Crystal—4-Bromo-2-Methylbenzonitrile

Preeda P, Ganapathi Raman R, Sakthivel Pandurengan, Arun Thirumurugan, Suresh Sagadevan

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: 4B2MBN; FT-IR; FT-Raman; Photoluminescence; Antibacterial

Online: 29 August 2023 (03:43:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0635.v1

Potato Peels to Bioethanol: Evaluation of Different Pre-treatment Strategies for Low-Cost Saccharification Using In-house Produced Multi-Enzyme System

Sanjeev Kumar Soni, Binny Sharma, Apurav Sharma, Bishakha Thakur, Raman Soni

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: Potato peels; Pre-treatment; Multiple enzyme system; Enzymatic saccharification; Fermentation; Bioethanol

Online: 9 May 2023 (10:25:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0945.v1

Coastal Copper Tailings Dispersal: 3D Mapping And Shoreline Impacts, Particle Migration, Leaching, And Toxicity

W. Charles Kerfoot, Gary Swain, Robert Regis, Varsha K. Raman, Colin N. Brooks, Chris Cook, Molly Reif

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: Coastal Mine Tailings, Keweenaw Peninsula, LiDAR 3D Bathymetry, UAS drone studies, Particle Dispersal, Specific Gravity, Copper Concentrations, Buffalo Reef, Mohawkite Arsenic, Toxicity, Daphnia

Online: 15 April 2024 (10:32:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1690.v1

Breeding Novel Rice Hybrids for Aerobic Ecology: A Way-Out from Global Warming and Water Crisis

Ambati Srijan, Senguttuvel P, Kuldeep Singh Dangi, Sudheer Kumar S, Raman Meenakshi Sundaram, Srinivasa Chary D

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: Aerobic rice; hybrids; heterosis; stability; water crisis

Online: 25 July 2023 (09:51:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201901.0227.v1

Raman Tweezers as a Tool for Small Microplastics and Nanoplastics Identification in Sea Water

Raymond Gillibert, Gireeshkumar Balakrishnan, Quentin Deshoules, Morgan Tardivel, Alessandro Magazzù, Maria G. Donato, Onofrio M. Marago, Marc Lamy de La Chapelle, Florent Colas, Fabienne Lagarde, Pietro G. Gucciardi

Subject: Environmental And Earth Sciences, Environmental Science Keywords: Microplastics, Nanoplastics, Optical Tweezers, Raman Spectroscopy

Online: 22 January 2019 (18:00:37 CET)

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Preprint BRIEF REPORT | doi:10.20944/preprints202401.1491.v1

Comparison of LIRADS 5 Image Guided Core Biopsy Derived From Formalin Fixed and Frozen Tissue Cores for Radiogenomics and Radioproteomics Analysis in Well, Moderate and Poorly Differentiated Hepatocellular Carcinoma

Margaret Simonian, David sk Lu, Julian P Whitelegge, Whitaker Cohn, Preeti Ahuja, William Hsu, Steven Raman

Subject: Medicine And Pharmacology, Gastroenterology And Hepatology Keywords: Liver HCC, radioproteomics, radiogenomics

Online: 19 January 2024 (10:51:19 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.0894.v1

Characterization of As-Synthesized PANI/CeO₂ Nanocomposite Films for Enhanced Anti-corrosion Applications

Ahmad Alsaad, Mohannad Al-Hmoud, Taha Rababah, MOHAMMAD MARASHDEH, Mamduh J. Aljaafreh, Sharif Abu Alrub, Ayed M. Binzowaimil, Ahmad Telfah

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: corrosion protection; protonated polyaniline (PANI); cerium dioxide (CeO₂); optical bandgap energy; electrical conductivity

Online: 16 February 2024 (11:07:27 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0046.v1

Buckling Defect Optimization of Constrained Ring Rolling of Thin-Walled Conical Rings with Inner High Ribs Combining Response Surface Method with FEM

Wei Feng, Peng Zhao

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: Aluminum alloy thin wall conical ring with inner high ribs; Constrained ring rolling; Buckling defect optimization; FE simulation; Response surface method

Online: 1 March 2024 (12:04:25 CET)

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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/preprints202403.1657.v1

Displacement Mapping as a Highly Flexible Surface Texturing Tool for Additively Photopolymerized Components

Robert Bail, Dong Hyun Lee

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: mesh modeling; resin printing; surface finish; random texture; nature-inspired surfaces

Online: 27 March 2024 (08:23:24 CET)

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Preprint ARTICLE | doi:10.20944/preprints202306.0591.v1

Enhanced Energy Storage Performance and Efficiency in Bi0.5(Na0.8K0.2)0.5TiO3–Bi0.2Sr0.7TiO3 Relaxor Ferroelectric Ceramics via Domain Engineering

Srinivas Pattipaka, Hyunsu Choi, Yeseul Lim, Kwi-Il Park, Kyeongwoon Chung, And Geon Tae Hwang

Subject: Engineering, Electrical And Electronic Engineering Keywords: Lead-free ceramic capacitors; Dielectric; Relaxor ferroelectric; Domain engineering; Energy storage

Online: 8 June 2023 (04:52:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201909.0010.v1

Assessment of Total Phenolic and Flavonoid Contents and Potential Biological Efficacy of Few Pinus species Growing in Northern Himalayas

LAV SINGH, Pooja Dixit, Atul Kumar Upadhyay, Ravi Prakash Srivastava, Shiva raman Pandey, Praveen Chandra Verma, Gauri Saxena

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Pinus; needle; Himalayas; phenolics; flavonoids; antimicrobial; antioxidant

Online: 1 September 2019 (10:41:37 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.1274.v1

ML-Enhanced Live-Video Streaming in Offline MANETs: An Applied Approach

Manuel Jesús-Azabal, Vasco N. G. J. Soares, Jaime Galán-Jiménez

Subject: Computer Science And Mathematics, Computer Networks And Communications Keywords: Mobile Adhoc Networks; Live-video streaming; Artificial Intelligence; Machine Learning; Bluetooth Low Energy; Offline streaming

Online: 21 March 2024 (08:20:22 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1935.v1

Chondrogenic Cancer Grading by combining Machine and Deep Learning with Raman Spectra of Histopathological Tissues

Gianmarco Lazzini, Mario D’Acunto

Subject: Physical Sciences, Biophysics Keywords: Chondrosarcoma; Enchondroma; Confocal Raman Microscopy; Machine Learning, Deep Learning; Permutation Feature Importance

Online: 29 January 2024 (09:44:57 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.0112.v1

Microwave Field Induced Changes in Raman Modes and Magnetic Force Images of Antiferromagnetic NiO Films

Diego Caso, Aida Serrano, Miriam Jaafar, Pilar Prieto, Akashdeep Kamra, César González-Ruano, Farkhad G. Aliev

Subject: Physical Sciences, Condensed Matter Physics Keywords: NiO; domain walls; microwave; antiferromagnet; Raman

Online: 3 October 2023 (10:15:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1395.v1

An Unmanned Vehicle-Based Remote Raman System for Re-al-Time Trace Detection and Identification

Wenzhen Ren, Bo Wang, Zhengmao Xie, Hui Wang, Xiangping Zhu, Wei Zhao

Subject: Physical Sciences, Applied Physics Keywords: Remote Raman; Time-Gated; Traces Detection and Identification.

Online: 20 September 2023 (11:19:27 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/preprints201701.0051.v1

Investigation of Urbanization Effects on Land Surface Phenology in Northeast China during 2001–2015

Rui Yao, Lunche Wang, Xin Huang, Xian Guo, Zigeng Niu, Hongfu Liu

Subject: Environmental And Earth Sciences, Environmental Science Keywords: urbanization; land surface phenology; urban heat island; Northeast China

Online: 10 January 2017 (10:30:26 CET)

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Preprint ARTICLE | doi:10.20944/preprints202208.0034.v1

High Sensitivity Sers Substrate of A Few Nanometers Single-Layer Silver Thickness Fabricated by DC Magnetron Sputtering Technology

Hsing-Yu Wu, Hung-Chun Lin, Guan-Yi Hung, Chi-Shun Tu, Ting-Yu Liu, Chung-Hung Hong, Guoyu Yu, Jin-Cherng Hsu

Subject: Physical Sciences, Applied Physics Keywords: surface-enhanced Raman scattering (SERS); silver nanoparticle (AgNP); rhodamine 6G (R6G); dc magnetron sputtering; SERS substrate; hotspot; analytical enhancement factor (AEF); limit of detection (LOD); relative standard deviation (RSD)

Online: 2 August 2022 (04:23:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202402.0890.v1

Characterization of Industrial High-Strength Aluminum Alloys by Laser-Induced Breakdown Spectroscopy, With Special Emphasis on the Detection of Low Contents of Mg, Mn, Cr, Cu, Zn and Sensing of Molecular Diatomic Emission of AlO During Ablation

Svetlana Rytchkova, Luc Lévesque

Subject: Physical Sciences, Optics And Photonics Keywords: Laser-induced breakdown spectroscopy (LIBS); Aluminum (Al); Magnesium (Mg); Manganese (Mn); Chromium (Cr); Copper (Cu); Zinc (Zn); Aluminum Monoxide (AlO).

Online: 16 February 2024 (07:01:12 CET)

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Preprint ARTICLE | doi:10.20944/preprints201608.0092.v1

An Extremely Efficient Boundary Element Method for Wave Interaction with Long Cylindrical Structures Based on Free-Surface Green’s Function

Yingyi Liu, Ying Gou, Bin Teng

Subject: Engineering, Marine Engineering Keywords: long cylindrical structure; free-surface Green function; higher-order boundary element method; multipole expansion; singularity elimination; Gauss-Kronrod; numerical quadrature; OpenMP parallelization

Online: 9 August 2016 (10:50:40 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202001.0351.v1

A Miniature Fibre-optic Raman Probe Fabricated by Ultrafast Laser Assisted Etching

Calum A. Ross, David G. MacLachlan, Brian Smith, Rainer J. Beck, Jonathan D. Shephard, Nick Weston, Robert R. Thomson

Subject: Physical Sciences, Optics And Photonics Keywords: Optical biopsy; Raman spectroscopy; Micro-optics; Ultrafast laser assisted etching; Femtosecond laser micromaching

Online: 29 January 2020 (10:38:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints202103.0330.v1

EndoScreen Chip: Serum Complement C9 Immunoassays Improve Risk Prediction and Early Diagnosis of Esophageal Adenocarcinoma

Julie A. Webster, Alain Wuethrich, Karthik B. Shanmugasundaram, Renee S. Richards, Wioleta M. Zelek, Alok K. Shah, Louisa Gordon, Bradley J. Kendall, Gunter Hartel, B. Paul Morgan, Matt Trau, Michelle M. Hill

Subject: Medicine And Pharmacology, Immunology And Allergy Keywords: Barrett’s esophagus; biomarker; surveillance; screening; surface-enhanced Raman spectroscopy; SERS; complement component; liquid biopsy; lectin; glycoprotein.

Online: 12 March 2021 (08:03:55 CET)

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Preprint ARTICLE | doi:10.20944/preprints201611.0008.v1

Raman and Terahertz Spectroscopic Investigation of Cocrystal Formation Involving Antibiotic Nitrofurantoin Drug and Coformer 4-aminobenzoic Acid

Yong Du, Qiang Cai, Jiadan Xue, Qi Zhang

Subject: Medicine And Pharmacology, Pharmacy Keywords: nitrofurantoin; active pharmaceutical ingredient; 4-aminobenzoic acid; cocrystallization; intermolecular interaction; Raman spectroscopy; terahertz spectroscopy

Online: 1 November 2016 (09:54:24 CET)

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Preprint ARTICLE | doi:10.20944/preprints201608.0149.v1

Estimation of Chlorophyll‐a Concentration and Trophic States for an Inland Lake from Landsat 8 OLI Data: A Case of Nalban Lake of East Kolkata Wetland, India

Pulak Patra, Sourabh Kumar Dubey, Raman Kumar Trivedi, Sanjeev Kumar Sahu, Sangram Keshari Rout

Subject: Environmental And Earth Sciences, Environmental Science Keywords: landsat 8 OLI; Nalban Lake; East Kolkata Wetland; chlorophyll-a prediction; study points; validation points

Online: 15 August 2016 (13:51:19 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 ARTICLE | doi:10.20944/preprints202010.0501.v1

Whole-genome sequencing and phenotyping revealed structural variants and varied level of resistance against leaf crumple disease in diverse lines of snap bean (Phaseolus vulgaris)

Gaurav Agarwal, Saritha Raman Kavalappara, Saurabh Gautam, Andre Luiz Biscaia Ribeiro da Silva, Alvin M. Simmons, Rajagopalbabu Srinivasan, Bhabesh Dutta

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: Cucurbit leaf crumple virus, Sida golden mosaic Florida virus, Whitefly, Snap beans, Lima beans

Online: 25 October 2020 (19:12:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints202105.0715.v1

Raman and X-ray Photoelectron Spectroscopic Study of Aqueous Thiol-Capped Ag-Zn-Sn-S Nanocrystals

Volodymyr Dzhagan, Oleksandr Selyshchev, Yevhenii Havriliuk, Nazar Mazur, Oleksandra Raievska, Oleksandr Stroyuk, Serhiy Kondratenko, Alexander Litvinchuk, Mikhailo Valakh, Dietrich R.T. Zahn

Subject: Chemistry And Materials Science, Nanotechnology Keywords: colloidal nanocrystals; Ag2ZnSnS4; phonons; Ag-Zn-S; Ag-Sn-S; non-stoichiometry; secondary phase; XPS; FTIR

Online: 31 May 2021 (08:33:21 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/preprints202403.0918.v1

Raman Technology for Process Control: Waste Shells Demineralization to Produce Transparent Polymer Foils Reinforced with Natural Antioxidant, and Calcium Acetate By-Product

Simona Cinta Pinzaru, Iuliana-Cornelia Poplăcean, Karlo Maškarić, Danut-Alexandru Dumitru, Lucian Barbu-Tudoran, Tudor Liviu TĂMAȘ, Fran Nekvapil, Bogdan Neculai

Subject: Chemistry And Materials Science, Biomaterials Keywords: Raman technology; recovery and resource utilization technology; process control; biogenic carbonate waste; chitin; calcium acetate drug; carotenoids.

Online: 15 March 2024 (12:01:12 CET)

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Waste biogenic materials from seafood exploitation are valuable resources of new compounds exploitation within the blue bioeconomy concept. Here, we describe the effectiveness of Raman technology implementation as an in-line tool for demineralization process control of crustaceans or gastropods. We produced transparent chitin polymer foils from three waste crustacean shells (C. sapidus, S. mantis and M. squinado) using a slow, green chemical approach employing acetic acid, and showed the progressive process of biogenic carbonate dissolution and increasing the Raman characteristic signal of chitin, in a time dependence manner. It turned that chitin foils obtaining is species-specific, and the demineralization bath of waste shell mixture can be effectively tracked by Raman spectroscopy, for solvent control and the recovery of the calcium acetate as valuable by-product. Comparatively, calcium acetate drug, a compound widely used in kidney failure diseases, or as additive in nutraceuticals and food industry, has been obtained here, following a green demineralization path of the sea snail Rapana venosa intact shell, assisted by Raman tech-nology, using 9% acetic acid (vinegar) solution for 14 days. To validate the final products identity and quality, The process of waste shells demineralization and the final products of the treatment were investigated using various Raman techniques and technologies, cross-validating the results with FT-IR, XRD and SEM-EDX techniques. NIR Raman spectroscopy revealed chitin bands in a time-dependent manner, while Resonance Raman spectroscopy showed the preservation of ca-rotenoids after two weeks of acetic acid treatment. A hand-held flexible TacticID Raman system with a 1064 nm excitation demonstrated its effectiveness as a rapid, in-line decision making tool during process control and revealed excellent reproducibility of the lab-based instrument signal, suitable for in situ evaluation of the demineralization status and solvent saturation control. The calcium acetate recovered from residual treatment solutions was assessed regarding its hydration status, purity, and suitability as recrystallized material for further use as pharmaceutical product or ingredient in complex formulations.

Preprint ARTICLE | doi:10.20944/preprints201810.0423.v1

Cross-Sectional Analysis of Overall Dietary Intake and Mediterranean Dietary Pattern in Patient’s with Crohn’s Disease

Lorian Taylor, Abdulelah Almutairdi, Nusrat Shommu, Richard Fedorak, Subrata Ghosh, Raylene Reimer, Remo Panaccione, Maitreyi Raman

Subject: Medicine And Pharmacology, Gastroenterology And Hepatology Keywords: Crohn’s disease, dietary intake, malnutrition, Mediterranean diet

Online: 18 October 2018 (12:03:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202207.0330.v1

Geologic Soil Parent Material Influence on Forest Surface Soil Chemical Characteristics in the Inland Northwest, USA

James A. Moore, Mark J. Kimsey, Mariann Johnston, Terry M. Shaw, Peter Mika, And Jaslam Poolakkal

Subject: Environmental And Earth Sciences, Environmental Science Keywords: Forest nutrition; soil chemistry; geology; cumulative distribution functions

Online: 21 July 2022 (13:26:46 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: Electrochemistry, Chemistry And Materials Science 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/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 REVIEW | doi:10.20944/preprints202303.0353.v1

Surface Treatment of Biochar: Methods, Surface Analysis and Potential Applications. A Comprehensive Review

Marlena Gęca, Ahmed M. Khalil, Arvind K. Bhakta, Youssef Snoussi, Piotr Nowicki, Małgorzata Wiśniewska, Mohamed M. Chehimi

Subject: Biology And Life Sciences, Toxicology Keywords: biomass conversion; thermochemical treatment; surface chemical modification; coupling agents; biochar implementation

Online: 20 March 2023 (08:31:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0196.v1

System Identification and Dynamic Analysis of the Propulsion Shaft Systems Using Response Surface Optimization Technique

Aavash Chandra Paudel, Sushil Doranga, Yueqing Li, Mukunda Khanal

Subject: Engineering, Mechanical Engineering Keywords: Propeller Shaft, Vibrations, Optimization, Response Surface

Online: 5 March 2024 (09:18:00 CET)

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For marine vessels, a propeller shaft system, also known as a propulsion shaft system, is an essential changer in engine torque and propeller thrust. The propeller shaft system is subjected to transverse, longitudinal, and torsional excitations during operation. These sources of excitations originate from alternating thrust generated by the propeller, operation of a propeller in a stern flow field which is non-uniform in time and space, misalignment of components such as shafts, bearings, and keyholes in the assembly, excitations in the form of rotational motion, and the whirling motion of the shafts. These dynamic excitations posed a challenging issue for the integrity and reliability of a marine vehicle. Thus, it is crucial to analyze the dynamic response of the propulsion shaft system. The dynamic analysis of the propulsion shaft system is typically conducted using numerical /analytical models. At present, Finite Element Model (FEM) as a numerical model plays a vital role in analyzing the dynamic response of the structure. The computed response and the modal parameters from the FE model are reliable only if accurate boundary conditions, such as stiffness, can be imposed on the model. However, the numerical FE model deviates from the experimental results because of uncertainties in the stiffness values of the bearings and other connectors. This paper uses the Response Surface Optimization (RSO) technique to estimate the unknown stiffness of the bearings used in the propulsion shaft system. The experimental model of the propeller shaft system is constructed from the steady-state response of the system using the step sine excitation. The natural frequencies and the amplitude of vibrations in the FE model are updated using the parametric RSO technique. The updated model shows that the difference in natural frequencies and vibration amplitude is less than 10% between the optimized and experimental models. Propeller Shaft, Vibrations, Optimization, Response Surface

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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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 REVIEW | doi:10.20944/preprints201904.0296.v1

Controlled Surface Wettability by Plasma Polymer Surface Modification

Muzammil Iqbal, Duy Khoe Dinh, Abbas Qasim, Muhammad Imran, Harse Sattar, Aqrab Ul Ahmad

Subject: Chemistry And Materials Science, Surfaces, Coatings And Films Keywords: polymer surfaces; surface wettability; plasma surface modification; tunable surface wettability; pH-responsive

Online: 26 April 2019 (10:35:01 CEST)

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Preprint REVIEW | doi:10.20944/preprints202404.0354.v1

Advancements in Neurosurgical Intraoperative Histology With Particular Emphasis on Stimulated Raman Scattering (SRS) Microscopy

Ali A. Mohamed, Emma Sargent, Cooper Williams, Zev Karve, Karthik Nair, Brandon Lucke-wold

Subject: Medicine And Pharmacology, Surgery Keywords: deep neural networks; raman histology; digital histopathological assessment, frozen sectioning, cytologic preparations

Online: 4 April 2024 (08:14:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0098.v1

Raman Analysis of Deposition Pressure Variations in Nanocomposite SiCN Coatings: A 4-Stage Model

Arnab Bhattacharyya

Subject: Engineering, Metallurgy And Metallurgical Engineering Keywords: Si-C-N; Nanocomposite coatings; crystallization; sputtering; nanomechanical

Online: 1 April 2024 (15:03:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202111.0078.v1

GRaVN: A Convolutional Network Approach to Generalised Characterisation of Raman Spectra for Space Exploration

Jon Kissi, Tianqi Xie, Ken McIsaac, Gordon R Osinski, Sean Shieh

Subject: Engineering, Electrical And Electronic Engineering Keywords: GRaVN; machine learning; convolutional neural networks; CNN; raman spectroscopy; analogue missions; planetary science; random undersampling; random oversampling; CanMoon

Online: 3 November 2021 (09:24:38 CET)

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Preprint ARTICLE | doi:10.20944/preprints201904.0066.v1

A Correction Method of Mixed Pesticide Content Prediction in Apple by Using Raman Spectra

Yan Li, Yankun Peng, Jianwei Qin, Kuanglin Chao

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Raman spectra; mixed pesticides; apple; correction method; rapid; real-time

Online: 5 April 2019 (15:17:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1778.v1

Surface Morphology and Human Osteoblast Response of 316L Stainless Steel after Various Surface Treatments

Vincent K. S. Hsiao, Yan-Cheng Lin, Hsi-Chin Wu, Tair-I Wu

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: 316L stainless steel; immersion corrosion; shot peening; electrochemical corrosion; cell adhesion

Online: 27 September 2023 (04:15:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.0573.v1

Optical Diffraction Tomography and Raman Confocal Microscopy for the Investigation of Vacuoles Associated with Cancer Senescent Engulfing Cells

Silvia Ghislanzoni, Jeon Woong Kang, Arianna Bresci, Andrea Masella, Koseki J. Kobayashi-Kirschvink, Dario Polli, Italia Bongarzone, Peter T. C. So

Subject: Biology And Life Sciences, Life Sciences Keywords: microscopy; optical diffraction tomography; Raman spectroscopy; therapy-induced senescence; cell engulfing; vacuole; cancer; cell-in-cell

Online: 10 October 2023 (05:32:15 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/preprints201912.0022.v1

Ultrasensitive SERS-Based Plasmonic Sensor with Analyte Enrichment System Produced by Direct Laser Writing

George Pavliuk, Dmitrii Pavlov, Eugeny Mitsai, Oleg Vitrik, Aleksandr Mironenko, Alexander Zakharenko, Sergei A. Kulinich, Saulius Juodkazis, Svetlana Bratskaya, Alexey Zhizhchenko, Aleksandr Kuchmizhak

Subject: Physical Sciences, Optics And Photonics Keywords: direct laser processing; femtosecond laser pulses; superhydrophobic textures; analyte enrichment; plasmonic nanostructures; SERS; medical drugs

Online: 3 December 2019 (11:19:55 CET)

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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/preprints202112.0450.v1

Effect of Internal Donors on Raman and IR Spectroscopic Fingerprints of MgCl2/TiCl4 Nanoclusters Determined by Machine Learning and DFT

Maddalena D' Amore, Toshiaki Taniike, Minoru Terano, Anna Maria Ferrari

Subject: Chemistry And Materials Science, Physical Chemistry Keywords: polymerization catalysis; machine learning; nanoclusters; DFT; Raman spectrum; IR spectrum; Lewis bases

Online: 28 December 2021 (14:04:10 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1742.v1

Quantitative Assessment and Impact Analysis of Land Surface Deformation in Wuxi Based on PS-InSAR and GARCH Model

Shengyi Zhang, Lichang Xu, Rujian Long, Le Chen, Shenghan Wang, Shaowei Ning, Fan Song, Linlin Zhang

Subject: Environmental And Earth Sciences, Environmental Science Keywords: PS-InSAR; Wuxi city; Surface volatility; Sentinel-1A; Groundwater level

Online: 29 March 2024 (05:28:11 CET)

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Preprint ARTICLE | doi:10.20944/preprints201910.0213.v1

Quasi Cubic Trigonometric Curve and Surface

Guicang Zhang, Kai Wang

Subject: Computer Science And Mathematics, Computational Mathematics Keywords: Quasi Extended Chebyshev space; optimal normalized totally positive basis; high-order continuity; shape preserving; shape features

Online: 18 October 2019 (11:33:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201907.0090.v1

Surface Tension and Viscosity of Blood

Adam Wesołowski, Anna Młynarczak

Subject: Biology And Life Sciences, Biophysics Keywords: surface tension; viscosity; blood

Online: 5 July 2019 (05:08:09 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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