Results 71 to 80 of about 14,546 (292)

CMOS-compatible silicon nitride spectrometers for lab-on-a-chip spectral sensing [PDF]

, 2016
We report on miniaturized optical spectrometers integrated on a photonic integrated circuit (PIC) platform based on silicon nitride waveguides and fabricated in a CMOS-compatible approach. As compared to a silicon on -insulator PIC-platform, the usage of
Bienstman, Peter, Ananth Z. Subramanian, Clemmen, Stéphane, Jansen, Rob, Martens, Daan, Severi, Simone, Roelkens, Günther, Roelof Jansen, Roel Baets, Baets, Roel, Stephane Clemmen, Xiaomin Nie, Gunther Roelkens, Ryckeboer, Eva M.P., Daan Martens, Ryckeboer, Eva, Subramanian, Ananth, Baets, Roel G., Subramanian, Ananth Z., Peter Bienstman, Simone Severi, Nie, Xiaomin, Jansen, Roelof, Eva Ryckeboer, Severini, Simone   +24 more
core   +1 more source

Fast and low energy-consumption integrated Fourier-transform spectrometer based on thin-film lithium niobate

Nanophotonics
Integrated miniature spectrometers have impacts in industry, agriculture, and aerospace applications due to their unique advantages in portability and energy consumption.
Wang Xijie, Ruan Ziliang, Chen Kaixuan, Chen Gengxin, Wang Mai, Chen Bin, Liu Liu   +6 more
doaj   +1 more source

A coma-free super-high resolution optical spectrometer using 44 high dispersion sub-gratings

Scientific Reports, 2021
Unlike the single grating Czerny–Turner configuration spectrometers, a super-high spectral resolution optical spectrometer with zero coma aberration is first experimentally demonstrated by using a compound integrated diffraction grating module consisting
Hua-Tian Tu, An-Qing Jiang, Jian-Ke Chen, Wei-Jie Lu, Kai-Yan Zang, Hao-Qi Tang, Osamu Yoshie, Xiao-Dong Xiang, Young-Pak Lee, Hai-Bin Zhao, Yu-Xiang Zheng, Song-You Wang, Junpeng Guo, Rong-Jun Zhang, Jing Li, Yue-Mei Yang, W. D. Lynch, Liang-Yao Chen   +17 more
doaj   +1 more source

Sudden anaerobization in Amphibacillus xylanus increases intracellular labile ferrous iron and inhibits cell growth

FEBS Open Bio, EarlyView.
Abruptly changing from aerobic to anaerobic conditions (sudden anaerobization) induced growth inhibition and a significant increase in intracellular labile ferrous iron in the aerotolerant anaerobe Amphibacillus xylanus. We found that free flavins mediate efficient electron transfer from NADH to ferric iron under anaerobic conditions, suggesting that ...
Shinya Kimata, Yoichi Sakai, Keisuke Tanaka, Etsuro Yoshimura, Ken Kitano, Morio Ishikawa, Tadahiro Nakamoto, Tsutomu Takayama, Hirofumi Inoue, Kaho Nomura, Tomonori Suzuki, Masataka Uchino, Akira Abe, Youichi Niimura   +13 more
wiley   +1 more source

Applications of an Integrated XRF-XRD Spectrometer [PDF]

Le Journal de Physique IV, 1996
An X-ray spectrometer which effectively integrates X-ray fluorescence and X-ray diffraction in a single instrument has been developed. The instrument uses same X-ray excitation, sample position, vacuum tank and control systems for both XRF and XRD measurements.
Yellepeddi, R., Bapst, A., Bonvin, D.
openaire   +2 more sources

Chip-scale sensor for spectroscopic metrology

Nature Communications
Miniaturized spectrometers hold great promise for in situ, in vitro, and even in vivo sensing applications. However, their size reduction imposes vital performance constraints in meeting the rigorous demands of spectroscopy, including fine resolution ...
Chunhui Yao, Wanlu Zhang, Peng Bao, Jie Ma, Wei Zhuo, Minjia Chen, Zhitian Shi, Jingwen Zhou, Yuxiao Ye, Liang Ming, Ting Yan, Richard Penty, Qixiang Cheng   +12 more
doaj   +1 more source

Time‐restricted feeding prior to Mycobacterium tuberculosis infection reduces tissue CD4+ T cells with limited impact on bacterial clearance

FEBS Open Bio, EarlyView.
Time‐restricted feeding (TRF) in mice increased liver fatty acid oxidation and decreased fatty acid biosynthesis. These alterations persisted when TRF was discontinued and the host was infected with Mycobacterium tuberculosis. Pre‐exposure to TRF did not alter tissue (lung and spleen) mycobacterial burden but significantly reduced CD3+ T cells in lungs
Ashish Gupta, Nidhi Yadav, Subhasmita Das, R. Rajendra Kumar Reddy, Nupur Sharma, Amol Ratnakar Suryawanshi, Jaswinder Singh Maras, Ranjan Kumar Nanda   +7 more
wiley   +1 more source

Mid-infrared integrated wideband duel-polarization Fourier-transform spectrometer [PDF]

, 2019
International audienceDue to the unique vibrational/rotational frequencies in the mid infrared (MIR) fingerprint region, which scans from 500 to 1500 cm-1, molecules can be assuredly identified and quantified.
Liu, Qiankun, Bouville, David, Talamas Simola E., Talamas Simola, Enrico, Isella, Giovanni, Alonso-Ramos C., Frigerio J., Liu Q., Le Roux, Xavier, Ramirez J. M., Isella G., Le Roux X., Marris-Morini D., Vakarin, Vladyslav, Ballabio, Andrea, Vivien, Laurent, Frigerio, Jacopo, Vakarin V., Vivien L., Marris-Morini, Delphine, Bouville D., Manel Ramírez, Joan, Alonso-Ramos, Carlos, Ballabio A.   +23 more
core   +1 more source

Cyclic azapeptide CD36 ligand attenuates cardiac injury and reduces long‐chain fatty acid accumulation after myocardial ischemia–reperfusion in mice

FEBS Open Bio, EarlyView.
In a murine model of myocardial ischemia and reperfusion (MI/R), the CD36 azapeptide ligand MPE‐298 reduces cardiac injury and transiently lowers left ventricular long‐chain fatty acids (LCFAs) accumulation 3 h after reperfusion, accompanied by a decrease of oxidative stress and inflammation‐associated genes' expression in the heart and adipose tissue.
Jade Gauvin, Naghme Radmannia, David N. Huynh, Liliane Ménard, Caroline Daneault, Maïté Veilleux, Ahsanullah Ahsanullah, André C. Carpentier, William D. Lubell, Matthieu Ruiz, Huy Ong, Sylvie Marleau, Simon‐Pierre Gravel   +12 more
wiley   +1 more source

Importin 7 mediates the nuclear import of HIV‐1 integrase via a specific interacting interface

FEBS Open Bio, EarlyView.
HIV‐1 integrase enables viral DNA integration into the host genome. By binding to the core domain of the host protein Importin 7 via its C‐terminal domain, the integrase is transported across the nuclear membrane into the nucleus, where integration of the viral genome into host DNA takes place. This translocation is a critical step for subsequent viral
Juana Bana, Avigail Yariv, Tal Oppenheim, Hadar Amartely, Dana Reichmann, Oded Livnah   +5 more
wiley   +1 more source