Results 51 to 60 of about 12,366,361 (187)
The class of the affine line is a zero divisor in the Grothendieck ring
We show that the class of the affine line is a zero divisor in the Grothendieck ring of algebraic varieties over complex numbers.
core +1 more source
Quantum scattering of neon from a nanotextured surface [PDF]
Phonon exchange is the usual cause of decoherence in atom–surface scattering. By including quantum effects in the treatment of Debye–Waller scattering, we show that phonon exchange becomes ineffective when the relevant phonon frequencies are high.
Levi, A.C. +7 more
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Abstract The early ontogeny of endemic freshwater fishes provides essential baseline biological information for conservation and management, particularly in species with restricted distributions and high vulnerability to habitat degradation, environmental change and population decline. This study presents the first detailed description of embryonic and
Rubén Alonso Contreras‐Tapia +6 more
wiley +1 more source
Photometric Follow-Up of Interstellar Comet 2I/ BORISOV Since Its Discovery
Talk delivered in 51st Lunar and Planetary Science Conference in Texas, USA, 16-20 March 2020In this abstract we compile the photometric measurements made of comet Borisov to exemplify the relevance of a systematic photometric study of interstellar ...
Trigo-Rodríguez, Josep María +4 more
core
Cytochrome bd-II is one of the three terminal quinol oxidases of the aerobic respiratory chain of Escherichia coli. Preparations of the detergent-solubilized untagged bd-II oxidase isolated from the bacterium were shown to scavenge hydrogen peroxide ...
Martina R. Nastasi +2 more
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Reduction of Perioperative Blood Loss During Endoprosthetic Replacement of Large Joints
Objective: to estimate changes in respiratory and circulatory functions in the acutest period in patients with pulmonary artery thromboembolism (PATE) without arterial hypotension during their first visit. Subjects and methods.
D. B. Borisov +4 more
doaj +1 more source
Political Connections, Subsidized Loans, and Capital Markets Development
ABSTRACT This paper analyzes the relationship between political connections and firms' financing decisions in Brazil using large datasets on campaign contributions, loans from the Banco Nacional de Desenvolvimento Econômico e Social (BNDES), and financial variables from Capital IQ.
Eduardo Kazuo Kayo
wiley +1 more source
The ComEA/ComEC Operon is Critical for Nitrosative Stress Tolerance by an Oral Commensal
ABSTRACT Oral commensal streptococci play a large role in mediating microbial homeostasis. Our prior work has demonstrated that hydrogen peroxide (H2O2) produced by oral commensal streptococci can react with salivary nitrite (NO2) and generate peroxynitrite (ONOO−), a potent antimicrobial.
Sara E. Edmonds +3 more
wiley +1 more source
Microsecond time-resolved absorption spectroscopy used to study CO compounds of cytochrome bd from Escherichia coli. [PDF]
Cytochrome bd is a tri-heme (b558, b595, d) respiratory oxygen reductase that is found in many bacteria including pathogenic species. It couples the electron transfer from quinol to O2 with generation of an electrochemical proton gradient.
Sergey A Siletsky +3 more
doaj +1 more source
Professor Aleksandr Evgenevich Borisov (on the 70th anniversary of the birth). [PDF]
Alexander Evgenievich Borisov – head of the Department of surgery named after N. D.
L. A. Levin +2 more
core +1 more source

