Showing 4,021 - 4,040 results of 4,095 for search '"spectroscopy"', query time: 0.07s Refine Results
  1. 4021

    Comparative Structural and Biophysical Investigation of <i>Lycosa erythrognatha</i> Toxin I (LyeTx I) and Its Analog LyeTx I-b by Amanda Neves de Souza, Gabriele de Azevedo Cardoso, Lúcio Otávio Nunes, Christopher Aisenbrey, Evgeniy Salnikov, Kelton Rodrigues de Souza, Ahmad Saad, Maria Elena de Lima, Jarbas Magalhães Resende, Burkhard Bechinger, Rodrigo Moreira Verly

    Published 2025-01-01
    “…Both peptides were isotopically labeled with <sup>2</sup>H<sub>3</sub>-Ala and <sup>15</sup>N-Leu to facilitate structural studies via NMR spectroscopy. <b>Results:</b> Circular dichroism and solid-state NMR analyses revealed that, while both peptides adopt α-helical conformations in membrane mimetic environments, LyeTx I-b exhibits a more amphipathic and extended helical structure, which correlates with its enhanced membrane interaction. …”
    Get full text
    Article
  2. 4022

    Performance Evaluation of Dual-Drive Mach-Zehnder Modulator and Optomechanical Crystal Cavity Comb Generation for All-Optical Band Conversion in 5G-Advanced Cellular Systems by Vicente Fito, Raul Ortiz, Maria Morant, Laura Mercade, Alejandro Martinez, Roberto Llorente

    Published 2025-01-01
    “…Optical frequency combs, featuring a spectrum of discrete, equally spaced coherent frequency lines, are crucial for high-precision metrology, spectroscopy, and telecommunications. Their effectiveness in all-optical frequency conversion depends on their stability in terms of frequency drift, phase noise, and power distribution across the comb lines. …”
    Get full text
    Article
  3. 4023

    Surface functionalization of titanium implants with controlled-release glutathione conjugate for antioxidant and osteogenesis by Huichuan Xu, Kosuke Nozaki, Ziniu Yu, Nobuyuki Kawashima, Takeshi Ueno, Huaze Wu, Hao Wu, Noriyuki Wakabayashi

    Published 2025-01-01
    “…X-ray photoelectron spectroscopy revealed differences in the chemical composition, accompanied by concurrent sulfur and phosphorus peaks, indicating the synthesis and covalent binding of the VPA-GSH conjugates onto the Ti surfaces. …”
    Get full text
    Article
  4. 4024

    Physical and Mechanical Properties of Green Cementless Mortar Incorporating Waste Paper Sludge Ash by Aida Nabila Jamaluddin, Siti Asmahani Saad, Siti Aliyyah Masjuki, Wan Nur Firdaus Wan Hassan, Siti Noratikah Che Deraman, Nadiah Md Husain

    Published 2025-01-01
    “…Furthermore, Fourier-transformed infrared spectroscopy (FTIR) was conducted to ascertain the structural elucidation and scanning electron microscope (SEM) analysis was done to provide microstructural observations of the geopolymer. …”
    Get full text
    Article
  5. 4025

    Towards Better Perovskite Absorber Materials: Cu+ Doping Improves Photostability and Radiation Hardness of Complex Lead Halides by Marina I. Ustinova, Maxim N. Sarychev, Nikita A. Emelianov, Yiqun Li, Yuling Zhuo, Tongjun Zheng, Sergey D. Babenko, Evgeniy D. Tarasov, Pavel P. Kushch, Nadezhda N. Dremova, Galina A. Kichigina, Alexandra V. Rasmetyeva, Andrey I. Kukharenko, Dmitry P. Kiryukhin, Ernst Z. Kurmaev, Xueqing Xu, Pavel A. Troshin, Lyubov A. Frolova, Ivan S. Zhidkov

    Published 2025-01-01
    “…X‐ray photoelectron spectroscopy revealed that Cu+ ions are partially integrated into the crystal lattice of MAPbI3 on the surface of perovskite grains and induce p‐doping effect, which is crucial for a range of applications. …”
    Get full text
    Article
  6. 4026

    Exploring the potential of black soldier fly live larvae as a sustainable protein source for laying hens: A comprehensive study on egg quality by Arianna Cattaneo, Erminia Sezzi, Marco Meneguz, Roberto Rosà, Davide Santori, Sofia Cucci, Rosalba Roccatello, Francesca Grosso, Stefano Mercandino, Valeria Zambotto, Eugenio Aprea, Pavel Solovyev, Luana Bontempo, Angela Trocino, Gerolamo Xiccato, Sihem Dabbou

    Published 2025-01-01
    “…., chemical composition, fatty acid (FA) profile, and metabolic profile using nuclear magnetic resonance (NMR) spectroscopy. To this aim, 108 Lohman Brown hens were housed in 27 cages (9 replicates per treatment, 4 birds per pen) and monitored between 16 and 34 weeks of age. …”
    Get full text
    Article
  7. 4027

    Complexes of vertebrate TMC1/2 and CIB2/3 proteins form hair-cell mechanotransduction cation channels by Arnaud PJ Giese, Wei-Hsiang Weng, Katie S Kindt, Hui Ho Vanessa Chang, Jonathan S Montgomery, Evan M Ratzan, Alisha J Beirl, Roberto Aponte Rivera, Jeffrey M Lotthammer, Sanket Walujkar, Mark P Foster, Omid A Zobeiri, Jeffrey R Holt, Saima Riazuddin, Kathleen E Cullen, Marcos Sotomayor, Zubair M Ahmed

    Published 2025-01-01
    “…Our AlphaFold 2 models suggest that vertebrate CIB proteins can simultaneously interact with at least two cytoplasmic domains of TMC1 and TMC2 as validated using nuclear magnetic resonance spectroscopy of TMC1 fragments interacting with CIB2 and CIB3. …”
    Get full text
    Article
  8. 4028

    Identifying Hierarchically Triple Star Systems with Gaia DR3 and LAMOST by Tongyu He, Jiao Li, Jiangdan Li, Jianping Xiong, Xiaobin Zhang, Mikhail Kovalev, Qiyuan Cheng, Sufen Guo, Mingkuan Yang, Xuefei Chen, Zhanwen Han

    Published 2025-01-01
    “…Triple star systems are critical for understanding stellar dynamics and compact objects in astrophysics, yet confirmed hierarchical triples identified via spectroscopy remain limited. In this study, we identified 23 triple systems by cross matching the Gaia DR3 non-single-star catalog with Large Sky Area Multi-Object Fiber Spectroscopic Telescope DR10 spectroscopic data, 18 of them are new discoveries. …”
    Get full text
    Article
  9. 4029
  10. 4030

    Novel type 2 diabetes prediction score based on traditional risk factors and circulating metabolites: model derivation and validation in two large cohort studiesResearch in context by Ruijie Xie, Christian Herder, Sha Sha, Lei Peng, Hermann Brenner, Ben Schöttker

    Published 2025-01-01
    “…A total of 249 NMR-derived metabolites were quantified using nuclear magnetic resonance (NMR) spectroscopy. Metabolites were selected with LASSO regression and model performance was evaluated with Harrell's C-index. …”
    Get full text
    Article
  11. 4031

    Synergistically S/N self-doped biochar as a green bifunctional cathode catalyst in electrochemical degradation of organic pollutant by Xuechun Wang, Huizhong Wu, Jiana Jing, Ge Song, Xuyang Zhang, Minghua Zhou, Raf Dewil

    Published 2025-01-01
    “…Density functional theory calculations and in-situ Fourier transformed infrared spectroscopy verified that graphitic N was the critical site for H2O2 generation. …”
    Get full text
    Article
  12. 4032

    Thermally activated fluorescence in 9,10-DPA single crystals enabling high-performance fast neutron detection by Yingming Wang, Lingyan Xu, Lu Liang, Zhentao Qin, Zhuochen Cai, Kaifu Zhang, Chongqi Liu, Lixiang Lian, Wei Zheng, Yanyan Lei, Qinzeng Hu, Binbin Zhang, Tao Wang, Wanqi Jie

    Published 2025-02-01
    “…The thermally activated fluorescence emission mechanism of DPA crystal was revealed using power-dependent and temperature-dependent photoluminescence spectroscopy. The fluorescence intensity increased with increasing temperature, suggesting its potential for neutron/gamma pulse shape screening (PSD) at high temperatures. …”
    Get full text
    Article
  13. 4033

    Clinical and molecular outcomes from the 5-Year natural history study of SSADH Deficiency, a model metabolic neurodevelopmental disorder by Itay Tokatly Latzer, Jean-Baptiste Roullet, Wardiya Afshar-Saber, Henry H. C. Lee, Mariarita Bertoldi, Gabrielle E. McGinty, Melissa L. DiBacco, Erland Arning, Melissa Tsuboyama, Alexander Rotenberg, Thomas Opladen, Kathrin Jeltsch, Àngels García-Cazorla, Natalia Juliá-Palacios, K. Michael Gibson, Mustafa Sahin, Phillip L. Pearl

    Published 2024-04-01
    “…Methods SSADHD subjects underwent clinical evaluations, neuropsychological assessments, biochemical quantification of γ-aminobutyrate (GABA) and related metabolites, electroencephalography (standard and high density), magnetoencephalography, transcranial magnetic stimulation, magnetic resonance imaging and spectroscopy, and genetic tests. This was parallel to laboratory molecular investigations of in vitro GABAergic neurons derived from induced human pluripotent stem cells (hiPSCs) of SSADHD subjects and biochemical analyses performed on a versatile murine model that uses an inducible and reversible rescue strategy allowing on-demand and cell-specific gene therapy. …”
    Get full text
    Article
  14. 4034

    Preparation of Composite Films Based on Methyl Cellulose/Polyvinyl Alcohol-loaded Nanosilver (AgNPs@PVA/MC) and Its Effect on Storage Quality of Ougan by Shuaishuai DAI, Weijie WU, Xiangjun FANG, Hangjun CHEN, Jun HUANG, Ruiling LIU, Huizhi CHEN, Ben NIU, Haiyan GAO

    Published 2025-01-01
    “…Scanning electron microscopy (SEM) showed that composite film with 0.1% AgNPs content was regular, compact and evenly distributed in cross section. Infrared spectroscopy and thermogravimetric analysis showed that composite film with 0.1% AgNPs content had good bonding and thermal stability. 0.1%AgNPs@PVA/MC composite film could effectively reduce the weight loss rate of Ougan during storage, and reduce the consumption rate of soluble solid, titratable acid and VC, delay the maturation of Ougan and significantly inhibit the growth of Penicillium citrinum, which could better maintain the quality of Ougan during the storage period, this study provided support for the sustainable development of Ougan industry.…”
    Get full text
    Article
  15. 4035
  16. 4036

    Effect and Mechanism of Swimming Exercise Preconditioning on Neurological Function of Mice with Intracerebral Hemorrhage by LI Yongxu, LIN Libin, LU Taotao, WEI Wei, LIN Zhicheng, XUE Xiehua

    Published 2023-04-01
    “…Magnetic resonance spectroscopy (MRS) was used to analyze the relative metabolism levels of creatine (Cr), choline (Cho), N-acetylaspartate (NAA), myo-inositol (MI), and lactate (Lac) in surrounding tissues of hematoma. …”
    Get full text
    Article
  17. 4037

    Preclinical pharmaco-toxicological screening of biomimetic melanin-like nanoparticles as a potential therapeutic strategy for cutaneous melanoma by Iasmina Marcovici, Iasmina Marcovici, Raul Chioibas, Raul Chioibas, Istvan Zupko, Iulia Pinzaru, Iulia Pinzaru, Alina Moaca, Alina Moaca, Adriana Ledeti, Adriana Ledeti, Lucian Barbu-Tudoran, Lucian Barbu-Tudoran, Andreea Geamantan, Andreea Geamantan, Iasmina Predescu, Iasmina Predescu, Cristina Adriana Dehelean, Cristina Adriana Dehelean

    Published 2025-02-01
    “…The current study presents the preclinical evaluation of MEL-NPs as a potential nanomedicine for CM management.MethodsMEL-NPs were produced through the oxidative polymerization of dopamine and characterized via electron microscopy and UV-VIS spectroscopy. The antioxidant activity was determined by using the DPPH method. …”
    Get full text
    Article
  18. 4038
  19. 4039

    Tungsten impurity reduction by ICRH in a high power injection and high performance H-mode discharge on EAST by Zhen Zhou, Shengyu Shi, Ling Zhang, Tao Zhang, Xiaohe Wu, Yunxin Cheng, Wenmin Zhang, Chaowei Mai, Shengyu Fu, Yifei Jin, Xiang Jian, Kaixuan Ye, Lin Yu, Ziqiang Zhou, Jiuyang Ma, Shuqi Yang, Kangning Geng, Gongshun Li, Jia Huang, Fei Wen, Yunfeng Liang, Xiang Gao

    Published 2025-01-01
    “…Under this condition, the intensity of W unresolved transition array spectral structure in the region of 45–70 Ǻ (which is composed of W ^27+ -W ^45+ line emissions) and W ^44+ density through spectroscopy in the Extreme Ultraviolet region decreases markedly. …”
    Get full text
    Article
  20. 4040

    Surface prereacted glass-ionomer particles incorporated into resin composites promote biocompatibility for restoration of subgingival dental defects by Yueyi Yang, Jing Huang, Xuchen Hu, Meiling Jing, Yujie Zhang, Chenci Xu, Wenduo Tan, Xiaoyu Liu, Chenguang Niu, Zhengwei Huang

    Published 2025-04-01
    “…The microstructure and elemental distribution were characterized by scanning electronic microscopy and energy-dispersive spectroscopy. The resin composites containing 50 or 70 wt% S-PRG fillers exhibited comprehensively better physicochemical properties, including flexural modulus, compressive strength, and water sorption. …”
    Get full text
    Article