Results 31 to 40 of about 3,199,565 (244)

Comparative study of high temperature oxidation behaviour in AISI 304 and AISI 439 stainless steels

Materials Research, 2003
This work deals with a comparison of high temperature oxidation behaviour in AISI 304 austenitic and AISI 439 ferritic stainless steels. The oxidation experiments were performed between 850 and 950 °C, in oxygen and Ar (100 vpm H2). In most cases, it
Antônio Claret Soares Sabioni, Anne-Marie Huntz, Elizete Conceição da Luz, Marc Mantel, Christian Haut   +4 more
doaj   +1 more source

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

FEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa, Shinya Sugimoto, Toshiro Sato   +2 more
wiley   +1 more source

Effects of oxidation and hot corrosion in a nickel disc alloy [PDF]

, 2008
This paper describes work to study oxidation and hot corrosion damage in nickel disc alloy RR1000. Oxidation damage has been characterised via mass change data from thermogravimetric analyses at temperatures from 700 to 800 ºC and cyclic oxidation ...
Encinas-Oropesa, Adriana, J.R. Nicholls, N.J. Simms, Hardy, M. C., A.J. Leggett, A. Encinas-Oropesa, M.C. Hardy, Leggett, A. J., Nicholls, John R., G.L. Drew, Drew, G. L., Simms, Nigel J.   +11 more
core   +1 more source

Analysis of Major Quality Characteristics and Volatile Components of Blueberry Honey

Shipin gongye ke-ji, 2022
Objective: As the most popular honey newly developed in the market, blueberry honey has attracted extensive attention in recent years. However, the quality difference of blueberry honey was large on the market because of the limitation of yield, in order
Minghua YANG, Daohao XIE, Xin ZHANG, Haiou KUANG, Xue LI, Xia TAN, Kun DONG, Yahui LI   +7 more
doaj   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

FEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee, Junho Jeong, Chae Yeong Lee, Hyunjoon Cho, Man Hwan Oh, Je Chul Lee, Jee‐Young Lee, Yangmee Kim   +7 more
wiley   +1 more source

Study on Preparation of Modified Soluble Dietary Fiber of Kidney Bean by Fermentation and Its Effect on Anti-exercise Fatigue

Shipin gongye ke-ji, 2022
To investigate the fermentation of the modified kidney bean dietary fiber influence on sports ability exercise fatigue, The experiment using modified kidney bean dietary fiber composite strains fermentation, the determination of its physical and chemical
Haijun BAI, Ying WANG
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

FEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler, Markus R. Busch, Reinhard Sterner   +2 more
wiley   +1 more source

Microstructures and Antioxidation of W Self-Passivating Alloys: Synergistic Effect of Yttrium and Milling Time

Metals
Tungsten and its alloys are widely recognized as key components in high-temperature environments. In this study, self-passivating W-Si-xY alloys with varying Y content were prepared using mechanical alloying (MA) and spark plasma sintering (SPS).
Shijie Chen, Lihong Xue, Shengming Yin, Youwei Yan, Qilai Zhou   +4 more
doaj   +1 more source

Microbiome‐blood–brain barrier interactions in aging — mechanisms and therapeutic potential

FEBS Letters, EarlyView.
Aging reshapes the gut microbiome (↓SCFA‐producing commensals; ↑pro‐inflammatory outputs), shifting circulating metabolites (↓SCFAs; ↑LPS, ↑TMAO, ↑PAA) that act at the BBB to increase nonspecific transcytosis, alter transport, and promote astrocyte reactivity, heightening brain vulnerability.
Daniel Cuervo‐Zanatta, Hari Baskar Balasubramanian, Amir Pasokh, Marietta Zille   +3 more
wiley   +1 more source

High Temperature Erosion- Oxidation Behavior of Nickel- Based Alloys Containing Mo in Fluidized Bed Waste Incineration

Journal of Advanced Materials in Engineering, 2020
High-temperature erosion-oxidation behavior of nickel-based alloys containing 0-7 wt.% Mo in fluidized bed waste incineration conditions was studied. A stream of hot condensed air with a flow rate of 25 L/min caused hot silica sand (700 °C) mixed with 0 ...
M. Emami, S. Hayashi
doaj