Results 91 to 100 of about 187,327 (298)

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

CT-Guided Percutaneous Microwave Ablation of Sclerosing Hepatic Carcinoma

Canadian Journal of Gastroenterology and Hepatology, 2020
Sclerosing hepatic carcinoma (SHC) is a rare subtype of hepatic carcinoma that can be caused by various pathogeneses. The histological characteristics of SHC demonstrate its high resistance to chemoembolization and thermal ablation; thus, surgical ...
Hongshen Song, Huaiyin Ding, Chuandong Zhu   +2 more
doaj   +1 more source

Empirical model for quasi direct current interruption with a convoluted arc [PDF]

, 2014
This contribution considers various aspects of a quasi direct current, convoluted arc produced by a magnetic field (B-field) connected in parallel with an RLC circuit that have not been considered in combination.
Humphries, J. E., Jones, G. R., Shammas, Noel Y. A., Shpanin, L. M., Spencer, J. W., Tennakoon, Sarath B.   +5 more
core  

Renal Denervation by Ablation with Innovative Technique in Resistant Hypertension

Arquivos Brasileiros de Cardiologia, 2013
Hypertension is the cause of thousands of deaths annually1, and half of the patients treated present controlled blood pressure (BP)2. Resistant hypertension (RH)is defined when the BP remains above the recommended targets with the use of three antihypertensive drugs with synergistic actions at maximum doses recommended and tolerated, preferably one ...
Bortolotto, Luiz Aparecido, Midlej-Brito, Thiago, Pisani, Cristiano, Costa-Hong, Valéria, Scanavacca, Maurício   +4 more
openaire   +2 more sources

Dammarenediol II enhances etoposide‐induced apoptosis by targeting O‐GlcNAc transferase and Akt/GSK3β/mTOR signaling in liver cancer

Molecular Oncology, EarlyView.
Etoposide induces DNA damage, activating p53‐dependent apoptosis via caspase‐3/7, which cleaves PARP1. Dammarenediol II enhances this apoptotic pathway by suppressing O‐GlcNAc transferase activity, further decreasing O‐GlcNAcylation. The reduction in O‐GlcNAc levels boosts p53‐driven apoptosis and influences the Akt/GSK3β/mTOR signaling pathway ...
Jaehoon Lee, Byung‐Cheol Han, Gi‐Bang Koo, Jihye Park, Mijin Kwon, Young Bin Park, Jae‐Mun Choi, Seung‐Ho Lee, Sangho Roh   +8 more
wiley   +1 more source

Feasibility of catheter ablation renal denervation in “mild” resistant hypertension

The Journal of Clinical Hypertension, 2017
AbstractRenal denervation (RDN) has been proposed as a novel interventional antihypertensive technique. However, existing evidence was mainly from patients with severe resistant hypertension. The authors aimed to evaluate the efficacy of RDN in patients with resistant hypertension with mildly elevated blood pressure (BP).
Shaojie, Chen, Marcio Galindo, Kiuchi, Willem-Jan, Acou, Michael, Derndorfer, Jiazhi, Wang, Ruotian, Li, Georgios, Kollias, Martin, Martinek, Tetsuaki, Kiuchi, Helmut, Pürerfellner, Shaowen, Liu   +10 more
openaire   +3 more sources

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Study of Modified and Improved Carbon Phenolic and Carbon Elastomeric Ablative Composites [PDF]

EPJ Web of Conferences
This article presents a structured comparative review of carbon-phenolic and carbon-elastomeric ablative composites used in thermal protection systems for aerospace and hypersonic applications.
Shaw Deepika, Tiwari Sanjiv Kumar, Kumar Kaushik, Pradhan Sudipta Kishore   +3 more
doaj   +1 more source

Colorectal cancer‐derived FGF19 is a metabolically active serum biomarker that exerts enteroendocrine effects on mouse liver

Molecular Oncology, EarlyView.
Meta‐transcriptome analysis identified FGF19 as a peptide enteroendocrine hormone associated with colorectal cancer prognosis. In vivo xenograft models showed release of FGF19 into the blood at levels that correlated with tumor volumes. Tumoral‐FGF19 altered murine liver metabolism through FGFR4, thereby reducing bile acid synthesis and increasing ...
Jordan M. Beardsley, Michael W. Rohr, Joseph A. Goode, Sai Preethi Nakkina, Jignesh G. Parikh, Deborah A. Altomare   +5 more
wiley   +1 more source