Results 21 to 30 of about 623,593 (284)

Impact of increased mean arterial pressure on skin microcirculatory oxygenation in vasopressor-requiring septic patients: an interventional study

Annals of Intensive Care, 2019
Background Heterogeneity of microvascular blood flow leading to tissue hypoxia is a common finding in patients with septic shock. It may be related to suboptimal systemic perfusion pressure and lead to organ failure.
Sigita Kazune, Anastasija Caica, Einars Luksevics, Karina Volceka, Andris Grabovskis   +4 more
doaj   +1 more source

Concentration Effect on Quenching of Chlorophyll a Fluorescence by All-Trans-β-Carotene in Photosynthesis

Molecules, 2017
Absorption, fluorescence spectra of chlorophyll a (Chl-a) and all-trans-β-carotene (β-Car) mixing solution are investigated in different polarity and polarizability solvents.
Chen Chen, Nan Gong, Zuowei Li, Chenglin Sun, Zhiwei Men   +4 more
doaj   +1 more source

Electrochemical and Optical Properties of Fluorine Doped Tin Oxide Modified by ZnO Nanorods and Polydopamine

Chemosensors, 2023
Various forms of zinc oxide (ZnO) are frequently used in the design of optical and electrochemical sensors. However, the optical and electrochemical properties of ZnO should be properly adjusted depending on the application area. Therefore, in this work,
Roman Viter, Viktoriia Fedorenko, Inga Gabriunaite, Irina Tepliakova, Simonas Ramanavicius, Viktoriia Holubnycha, Arunas Ramanavicius, Aušra Valiūnienė   +7 more
doaj   +1 more source

Multimodal Device for Real-Time Monitoring of Skin Oxygen Saturation and Microcirculation Function

Biosensors, 2019
The present study introduces a recently developed compact hybrid device for real-time monitoring of skin oxygen saturation and temperature distribution. The prototype involves a snapshot hyperspectral camera, multi-wavelength illuminator, thermal camera,
Uldis Rubins, Zbignevs Marcinkevics, Janis Cimurs, Inga Saknite, Edgars Kviesis-Kipge, Andris Grabovskis   +5 more
doaj   +1 more source

Atomic-scale characterization of nitrogen-doped graphite: Effects of dopant nitrogen on the local electronic structure of the surrounding carbon atoms [PDF]

, 2012
We report the local atomic and electronic structure of a nitrogen-doped graphite surface by scanning tunnelling microscopy, scanning tunnelling spectroscopy, X-ray photoelectron spectroscopy, and first-principles calculations. The nitrogen-doped graphite
Casolo Simone, Harada Yoshihisa, Kondo Takahiro, Nakamura Junji, Oshima Masaharu, Saito Makoto, Sakurai Masataka, Shikano Taishi, Suzuki Tetsuya, Tantardini Gian Franco, Trioni Mario Italo, 中村 潤児, 近藤 剛弘   +12 more
core   +2 more sources

Doppler-free frequency modulation spectroscopy of atomic erbium in a hollow cathode discharge cell

, 2011
The erbium atomic system is a promising candidate for an atomic Bose-Einstein condensate of atoms with a non-vanishing orbital angular momentum ($L \neq 0$) of the electronic ground state.
A.S. Bell, B. Dubetsky, B. Smeets, C.C. Bradley, D. Jaksch, D. Sukachev, G. Ritt, G.C. Bjorklund, G.G. Lister, G.K. Brennen, H. Brammer, I. Danshita, J. Ulitzsch, J.E. Lawler, J.J. McClelland, J.S. Ross, L. Santos, M. Lu, M. Weitz, O. Mandel, P. Buonsante, R. Bourouis, R. Grimm, T. Salger   +23 more
core   +1 more source

Tools for classification of growing/non-growing bacterial colonies using laser speckle imaging

Frontiers in Microbiology, 2023
Prior research has indicated the feasibility of assessing growth—associated activity in bacterial colonies through the application of laser speckle imaging techniques.
Ilya Balmages, Ilya Balmages, Janis Liepins, Stivens Zolins, Dmitrijs Bliznuks, Renars Broks, Renars Broks, Ilze Lihacova, Alexey Lihachev   +8 more
doaj   +1 more source

Ti3SiC2-formation during Ti–C–Si multilayer deposition by magnetron sputtering at 650 °C [PDF]

, 2013
Titanium Silicon Carbide films were deposited from three separate magnetrons with elemental targets onto Si wafer substrates. The substrate was moved in a circular motion such that the substrate faces each magnetron in turn and only one atomic species ...
Alami, Barsoum, Barsoum, Barsoum, Eklund, Eklund, Emmerlich, Frodelius, Goto, Hopfeld, Högberg, J. Colligon, J. Lu, Jeitschko, L. Hultman, Li, Mercier, Nickl, Nowotny, P. Eklund, Palmquist, Palmquist, Riley, Schneider, Sigumonrong, Spanier, Svechnikov, V. Vishnyakov, Walter, Wang, Wilhelmsson, Zhang   +31 more
core   +2 more sources

Atomic and Molecular Data for Optical Stellar Spectroscopy [PDF]

, 2015
High-precision spectroscopy of large stellar samples plays a crucial role for several topical issues in astrophysics. Examples include studying the chemical structure and evolution of the Milky Way galaxy, tracing the origin of chemical elements, and ...
Asplund, M., Barklem, P. S., Bergemann, M., Heiter, U., Lind, K., Magrini, L., Masseron, T., Mikolaitis, Š., Pickering, J. C., Ruffoni, M. P.   +9 more
core   +2 more sources

Gravitational atom spectroscopy

Physical Review D
Black holes in our Universe are rarely truly isolated, being instead embedded in astrophysical environments such as plasma or dark matter. A particularly intriguing possibility is that light scalar fields form bound states around black holes, producing extended “clouds” known as .
Matteo Della Rocca, Thomas F. M. Spieksma, Francisco Duque, Leonardo Gualtieri, Vitor Cardoso   +4 more
openaire   +2 more sources