Results 31 to 40 of about 32,182 (211)

L-cysteine modified silver nanoparticles for selective and sensitive colorimetric detection of vitamin B1 in food and water samples

Heliyon, 2020
The use of L-cysteine modified silver nanoparticles (Cys-capped AgNPs) as a colorimetric probe for determination of vitamin B1 (thiamine) is described in the present work.
Beeta Rani Khalkho, Ramsingh Kurrey, Manas Kanti Deb, Kamlesh Shrivas, Santosh Singh Thakur, Shamsh Pervez, Vikas Kumar Jain   +6 more
doaj   +1 more source

Molecular Signatures in the Near Infrared Dayside Spectrum of HD 189733b [PDF]

, 2008
We have measured the dayside spectrum of HD 189733b between 1.5 and 2.5 microns using the NICMOS instrument on the Hubble Space Telescope. The emergent spectrum contains significant modulation, which we attribute to the presence of molecular bands seen ...
Bouwman, J., Chen, Pin, Deming, D., Deroo, P., Swain, M. R., Tinetti, G., Vasisht, G., Yung, Y.   +7 more
core   +2 more sources

Assessment of Absorption of Glycated Nail Proteins in Patients with Diabetes Mellitus and Diabetic Retinopathy

Medicina, 2020
Background and objectives: Glycation occurs in a variety of human tissues and organs. Knowledge about the relationship between predictive biochemical factors such as absorption of glycated nail proteins and severity of type 2 diabetes mellitus (DM) and ...
Ieva Jurgeleviciene, Daiva Stanislovaitiene, Vacis Tatarunas, Marius Jurgelevicius, Dalia Zaliuniene   +4 more
doaj   +1 more source

An analysis of the shapes of interstellar extinction curves. VII Milky Way spectrophotometric optical-through-ultraviolet extinction and its R-dependence [PDF]

, 2019
We produce a set of 72 NIR-through-UV extinction curves by combining new Hubble Space Telescope/STIS optical spectrophotometry with existing International Ultraviolet Explorer spectrophotometry (yielding gapless coverage from 1150 to 10000 ?) and NIR ...
Bohlin, Ralph, Clayton, Geoffrey C., Fitzpatrick, E. L., Gordon, Karl, Massa, Derck   +4 more
core   +4 more sources

LiVO3/LiZnVO4 Nanocomposite: High Performance Electrocatalyst for Ambient Nitrogen Reduction to Ammonia

Advanced Engineering Materials, EarlyView.
Lithium‐mediated electrocatalysis enables sustainable N2 fixation but hindered by parasitic Li deposition. An oxide‐oxide nanocomposite (LiVO3/LiZnVO4) structurally integrates lithium into active sites, suppressing plating and enhancing N2 activation and HER supression.
Naina Goyal, Dhamotharan Dharmasigamani, Fabio Pires, Ravi Kumar, Sanjay Mathur   +4 more
wiley   +1 more source

FTIR Spectrophotometry as a Green Tool for Quantitative Analysis of Drugs: Practical Application to Amoxicillin

Journal of Chemistry, 2018
Amoxicillin is an antimicrobial agent that belongs to the penicillin compounds. Its bactericidal action causes a destruction of the cell wall of bacteria.
Stefany Fanelli, Alexander Zimmermann, Eliane Gandolpho Totóli, Hérida Regina Nunes Salgado   +3 more
doaj   +1 more source

Discovery of 21 New Changing-look AGNs in Northern Sky

, 2018
The rare case of changing-look (CL) AGNs, with the appearance or disappearance of broad Balmer emission lines within a few years, challenges our understanding of the AGN unified model.
Fan, Xiaohui, Feng, Xiaotong, Fu, Yuming, Green, Richard, Jiang, Linhua, Joshi, Ravi, Liu, Yuanqi, McGreer, Ian, Shangguan, Jinyi, Wang, Bingquan, Wang, Feige, Wu, Xue-Bing, Yang, Jinyi, Yang, Qian, Yao, Su   +14 more
core   +1 more source

Mimicking Synaptic Plasticity: Optoionic MoS2 Memory Powered by Biopolymer Hydrogels as a Dynamic Cations Reservoir

Advanced Functional Materials, EarlyView.
Janus (MoS2) transistors functionalized with sodium alginate (SA) and poly(vinylidene fluoride‐co‐trifluoroethylene) [P(VDF‐TrFE)] exhibit persistent photo‐induced ionic gating, driven by dynamic cation migration at the hybrid interface. This ionic mechanism enables finely tunable photoconductivity and emulates key synaptic plasticity behaviors ...
Yeonsu Jeong, Pietro Tordi, Adrián Tamayo, Bin Han, Massimo Bonini, Paolo Samorì   +5 more
wiley   +1 more source

Characterizing the IYJ Excess Continuum Emission in T Tauri Stars [PDF]

, 2011
We present the first characterization of the excess continuum emission of accreting T Tauri stars between optical and near-infrared wavelengths. With nearly simultaneous spectra from 0.48 to 2.4 microns acquired with HIRES and NIRSPEC on Keck and SpeX on
Akeson, Beristain, Calvet, Calvet, Edwards, Eisner, Eisner, Eisner, Eisner, Espaillat, Fischer, Furlan, Gould, Guenther, Gullbring, Gullbring, Gullbring, Hartigan, Hartmann, Herczeg, Hillenbrand, John Kwan, Johns-Krull, Johns-Krull, Kenyon, Lynne Hillenbrand, McClure, Millan-Gabet, Muzerolle, Muzerolle, Muzerolle, Muzerolle, Muzerolle, Najita, Najita, Perryman, Rayner, Rice, Romanova, Rostopchina, Suzan Edwards, Takagi, Tannirkulam, Tannirkulam, White, White, William Fischer   +46 more
core   +3 more sources

Thermoplasmonic Nanorings for Passive Solar‐Responsive Smart Windows in Energy‐Efficient Building Applications

Advanced Functional Materials, EarlyView.
This work presents scalable silver nanorings with tunable thermoplasmonic properties for smart window applications. By responding to sunlight and environmental changes, the nanorings modulate near‐infrared light and reduce heat transmission. Their unique geometry enables dynamic optical control, offering a promising route toward energy‐efficient ...
Xavier Baami González, Duncan S. Sutherland   +1 more
wiley   +1 more source