Results 101 to 110 of about 9,574,494 (334)

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

Tailoring ablation resistance of (Hf,Zr,Ta)C coatings above 2000 °C: Critical role of Ta content

Journal of Advanced Ceramics
Multicomponent (Hf,Zr,Ta)C ceramics are promising candidates for ablation-resistant coating materials applied in ultrahigh-temperature environments. However, the influence of compositional variations on their ablation behavior remains insufficiently ...
Jianhua Zhang, Yanqin Fu, Junshuai Lv, Junhao Zhao, Sen Yang, Pei Wang, Jie Xu, Tao Li, Yulei Zhang   +8 more
doaj   +1 more source

RNA‐related functions of BRCA2 in transcription, replication, and genome stability

FEBS Letters, EarlyView.
Beyond its role in homologous recombination, BRCA2 regulates R‐loop homeostasis, DNA–RNA hybrid resolution, RNA polymerase II dynamics, and transcriptional activation. Disruption of any of these functions can contribute to genome instability, inflammatory signaling, and tumorigenesis. BRCA2 is a central tumor suppressor protein best known for its roles
Lucia Alvaro‐Aranda, Sreerama Chaitanya Sridhara, Aura Carreira   +2 more
wiley   +1 more source

The effect of nitrogen doping on the ablation resistance of zirconium carbide ceramics

Journal of Advanced Ceramics
Ultrahigh-temperature ceramics (UHTCs) are prominent candidates for use in thermal protection systems in the aerospace and nuclear industries. This study introduces a nitrogen-doped zirconium carbide that demonstrates remarkable ablation resistance ...
Zheng Peng, Yingjie Cui, Jianbo Song, Sian Chen, Zengsheng Ma, Fuhua Cao   +5 more
doaj   +1 more source

Ablation-resistant carbide Zr0.8Ti0.2C0.74B0.26 for oxidizing environments up to 3,000 °C

Nature Communications, 2017
Hypersonic and aerospace applications motivate development of materials with improved resistance against ablation and oxidation at high temperatures. Here authors demonstrate a quaternary carbide, where sealing by surface oxides, slow oxygen diffusion ...
Yi Zeng, Dini Wang, Xiang Xiong, Xun Zhang, Philip J. Withers, Wei Sun, Matthew Smith, Mingwen Bai, Ping Xiao   +8 more
doaj   +1 more source

Atrial flutter ablation in a case of diuretic resistant constrictive pericarditis

Indian Heart Journal, 2015
We present a 66 year old gentleman with constrictive pericarditis and persistent atrial flutter. Initial management with oral loop diuretics was successful until he developed persistent atrial flutter. Once in atrial flutter the patient developed progressive signs of right heart failure resistant to high dose intravenous loop diuretics. He was referred
Pittaway, James F., Presern, Emma, Rathod, Vrijraj S., Rathod, Krishnaraj S., Deaner, Andrew   +4 more
openaire   +4 more sources

Arc ablation of graphene/copper-tungsten contacts under impact energy: enhancement of ablation resistance

To guarantee the dependable functioning of high-voltage, high-capacity switching apparatus under severe breaking conditions, conventional copper-tungsten (CuW) contact materials must address the limitation of enhancing ablation resistance.
Hanwen Ren, Jian Wang, Qingmin Li, Xinyi Zhang, Fanshuo Wei, Yongshun Zhang, Zhiyun Han, Jin He   +7 more
core   +1 more source

Antimicrobial resistance surveillance in Europe 2013: Annual Report of the European Antimicrobial Resistance Surveillance Network (EARS-Net) [PDF]

, 2014
Portugal - EARS-Net Management Team & National representatives of EARS-Net (Manuela Caniça, José Artur Paiva, Vera Manageiro, Eugénia Ferreira)The results presented in this report are based on antimicrobial resistance data from invasive isolates reported
European Antimicrobial Resistance Surveillance Network (EARS-Net)
core   +2 more sources

The heterodimeric amino acid transporters (HAT) of the SLC7/SLC3 family: A structure−function relationships and relevance to human pathology

FEBS Letters, EarlyView.
Heterodimeric amino acid transporters consist of SLC7 and SLC3 family proteins arranged in a conserved structural organization. They regulate nutrient transport across cell membranes, supporting essential cellular functions. These transporters also contribute to xenobiotic/drug uptake and distribution.
Mariafrancesca Scalise, Tiziano Mazza, Raffaella Scanga, Lara Console, Michele Galluccio, Cesare Indiveri   +5 more
wiley   +1 more source

Research progress and challenges on thermal protection of coating-matrix integrated modified C/C composites

Cailiao gongcheng
C/C composites， with low density， high specific strength， stable high-temperature mechanical properties and excellent thermal shock resistance， are one of the candidate materials for core components under extreme conditions such as hypersonic vehicle ...
LIU Chiyu, ZHOU Lei, YIN Xuemin, LI Hejun   +3 more
doaj   +1 more source