Results 91 to 100 of about 13,218,212 (303)

Perfil de deformação de embalagens em função da variação da pressão efetiva Package deformation profile as a function of the variation in effective pressure

Brazilian Journal of Food Technology, 2011
As embalagens metálicas são amplamente utilizadas em processos de esterilização convencional de alimentos, realizados em autoclaves. Devido ao seu material de construção e principalmente ao design do corpo e tampa contendo ondulações, estas embalagens ...
Maria Isabel Berto, Camila B. Kaihatu, Luis E. V. Alves Jr., Alfredo A. Vitali   +3 more
doaj   +1 more source

Online hose calibration for pressure control in mechanical ventilation

, 2019
Respiratory modules are used to assist patients who are unable to breathe sufficiently on their own. The aim of this paper is to develop a control method that achieves exact tracking of a time-varying target pressure, invariant to patient-hose-leak ...
Hunnekens, Bram, Bram Hunnekens, Heck, Frank, Joey Reinders, Nathan van de Wouw, Oomen, TAE Tom, Hunnekens, BGB Bram, Reinders, JMF, Tom Oomen, van de Wouw, Nathan, Oomen, Tom, Wouw, N Nathan van de, Frank Heck, Reinders, Joey   +13 more
core   +1 more source

Synergistic perspectives—How single‐molecule biophysics complement biochemical understanding

FEBS Letters, EarlyView.
In this review, we discuss how ensemble biochemistry and single‐molecule approaches are complementary, outline commonly used single‐molecule techniques, and illustrate their relevance through two representative case studies: chromatin organization by SMC complexes and pathway choice during DNA double‐strand break repair.
Sara De Bragança, Eline L. Jansen, Jorine M. Eeftens   +2 more
wiley   +1 more source

Simulation Research on Pressure Control Performance of Thermodynamic Venting System of Rocket Propellant Tank

Zhileng xuebao, 2019
This article described the composition and working principle of the thermodynamic venting system (TVS) for the in-orbit management of cryogenic propellants.
Xia Siqi, Sun Peijie, Li Peng, Wang Changhuan, Wang Lei, Li Yanzhong   +5 more
doaj  

Structures of mycobacterial 3‐methylcrotonyl‐CoA carboxylase reveal carrier‐domain translocation between catalytic sites

FEBS Letters, EarlyView.
Mycobacterial 3‐methylcrotonyl‐CoA carboxylase uses a mobile biotin‐carrying domain to shuttle a carboxyl group between two catalytic sites, enabling carboxylation of 3‐methylcrotonyl‐CoA during leucine breakdown. Cryo‐electron microscopy captures the carrier at both sites and reveals an inward loop movement that may prevent futile rebinding to the ...
Ajit Yadav, Bogdan I. Florea, Sebastian Geibel   +2 more
wiley   +1 more source

From junk to function — How weak selection in eukaryotes builds new parts and drives genomic complexity

FEBS Letters, EarlyView.
How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley   +1 more source

Precision grinding of cemented carbide ball valves by resin diamond wheels with different pore-forming agents

Jin'gangshi yu moliao moju gongcheng
To improve the machining effect of cemented carbide ball valves, pore-forming agents were introduced into resin diamond wheels. The mechanical properties, microstructures, and grinding performances of the wheels were analyzed, and the effects of hollow ...
Yanxin ZHU, Feng ZHAO
doaj   +1 more source

The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation

FEBS Letters, EarlyView.
Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge, Vivian Pogenberg, Alexander Baumgart, Bente Siebels, Hartmut Schlüter, Michael Hecht‐Bucher, Aymelt Itzen   +6 more
wiley   +1 more source

Experimental Verification of a Two-Motor-Two-Pump Motor-Controlled Hydraulic Cylinder with Throttle-Free Passive Load-Holding Capability in Four-Quadrant Operations

Actuators
Among various motor-controlled hydraulic cylinder (MCC) topologies, the two-motor-two-pump (2M2P) MCC distinguishes itself through several notable advantages, including precise cylinder pressure control and eliminating mode switch oscillations ...
Wei Zhao, Morten Kjeld Ebbesen, Michael Rygaard Hansen, Torben Ole Andersen   +3 more
doaj   +1 more source

Perioperative Blood Pressure Control in Pheochromocytoma: The Role of Intravenous Urapidil

Pheochromocytomas are rare tumors derived from chromaffin cells of neural crest origin in the adrenal medulla. These neoplasms typically synthesize and secrete catecholamines. Excessive secretion of catecholamines can lead to severe and potentially fatal
Levent Özsarı, Egemen Tural
core   +1 more source