Results 41 to 50 of about 244,445 (296)

In-situ formation of nitrogen doped microporous carbon nanospheres derived from polystyrene as lubricant additives for anti-wear and friction reduction

Friction, 2023
This study presents a nitrogen-doped microporous carbon nanospheres (N@MCNs) prepared by a facile polymerization–carbonization process using low-cost styrene.
Yixin Wang, Qi Lu, Huijie Xie, Shujuan Liu, Qian Ye, Feng Zhou, Weimin Liu   +6 more
doaj   +1 more source

L‐aspartate oxidase provides new insights into fumarate reduction in anaerobic darkness in Synechocystis sp. PCC6803

FEBS Letters, EarlyView.
Synechocystis strains deficient in succinate dehydrogenase (SDH) secrete more succinate than the WT under dark anaerobic conditions, supporting that SDH then primarily acts as SDH, not as a fumarate reductase. L‐aspartate oxidase (Laspo) from Synechocystis is functional under anaerobic conditions, reducing fumarate to succinate.
Kateryna Kukil, Jeffrey A. Hawkes, Cecilia Blikstad, Pia Lindberg   +3 more
wiley   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Impact of Lubricating Oil Leakage Characteristics of a Bearing Cavity Sealing System Based on an Oil–Gas Two-Phase Flow

Lubricants
In this paper, we aim to study the oil–gas two-phase flow characteristics, leakage characteristics, and critical oil sealing characteristics of the bearing cavity sealing system of aero-engine bearings.
Guozhe Ren, Rui Wang, Dan Sun, Wenfeng Xu, Yu Li   +4 more
doaj   +1 more source

Corrosion-resistant cobalt phosphide electrocatalysts for salinity tolerance hydrogen evolution

Nature Communications, 2023
Seawater electrolysis is a viable method for producing hydrogen on a large scale and low-cost. However, the catalyst activity during the seawater splitting process will dramatically degrade as salt concentrations increasing.
Xinwu Xu, Yang Lu, Junqin Shi, Xiaoyu Hao, Zelin Ma, Ke Yang, Tianyi Zhang, Chan Li, Dina Zhang, Xiaolei Huang, Yibo He   +10 more
doaj   +1 more source

The Seal Calculus

Information and Computation, 2005
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Castagna, Giuseppe, Vitek, Jan, Zappa Nardelli, Francesco   +2 more
openaire   +3 more sources

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Miscible chemical ordering in Ti-Cr-Mo quinary system by solid solution of Mo2Ti2AlC3 and Cr2.5Ti1.5AlC3 o-MAXs

Nature Communications
Out-of-plane ordering is promising for separately adjusting the heterodesmic chemical bonding inside the MAX phase thus tuning their properties, while constructing the out-of-plane ordered-MAX (o-MAX) is still a challenge.
Cheng-Feng Du, Chuanchao Wang, Mengfei Xu, Yaqing Xue, Lili Xue, Conghui Meng, Long Wang, Weihong Qi, Xuqing Liu, Hong Yu   +9 more
doaj   +1 more source

Investigation of Improved Labyrinth Seal Stability Accounting for Radial Deformation

Aerospace
This study examines the labyrinth seal disc of an aero-engine, specifically analysing the radial deformation caused by centrifugal force and heat stress during operation.
Guozhe Ren, Hongyuan Tang, Dan Sun, Wenfeng Xu, Yu Li   +4 more
doaj   +1 more source

Hydrostatic pressure activates HIF‐1α via β‐catenin to promote stemness in breast cancer cells

FEBS Open Bio, EarlyView.
To mimic the elevated intestinal fluid pressure in breast cancers, we loaded human breast cancer cells (MCF‐7, MDA‐MB‐453, and BT‐474) to 50 mmHg hydrostatic pressure. Hydrostatic pressure exposure upregulated HIF‐1α and induced stemness in MCF‐7 and BT‐474 cells.
Da Zhai, Yong Xu, Jingjing Ma, Ratchanee Duangrat, Chen Yan, Jingyan Liang, Hua Wei, Bin Jiang, Tao‐Sheng Li   +8 more
wiley   +1 more source