Results 161 to 170 of about 18,916 (214)

2-(2-Meth-oxy-phen-yl)-4,5-bis-(4-methyl-phen-yl)-1<i>H</i>-imidazol-3-ium 2,4,6-tri-nitro-phenolate. [PDF]

IUCrdata
Solo P, Doss MA, Pillay M, William Raja TR, Lizhohrii C, Mi A, Shimray N.   +6 more
europepmc   +1 more source

A high-frequency silicon-graphene-germanium barristor. [PDF]

Nat Commun
Wang X, Sun S, Qiao Z, Jiang H, Li C, Jiang H, Bai J, Song X, Li X, Wang X, Zhu X, Feng S, Li B, Liang J, Wang L, Xue Z, Ohno Y, Gao J, Di Z, Sun D, Liu C.   +20 more
europepmc   +1 more source

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Effect of Carbide Density on Fatigue Limit of H21 Die Steel

Journal of Materials Engineering and Performance, 2020
In the present work, the effect of carbide density on microstructure, hardness, wear rate, and fatigue limit of AISI H21 die steel has been studied. The specimens of H21 die steel have been employed hardening at 1195 °C, double tempering at 540 °C, cryotreatment at − 185 °C for 24 h, and soft tempering at 100 °C. The microstructure, hardness, wear rate,
D. N. Korade, K. V. Ramana, K. R. Jagtap
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Effect of nitrogen on microstructure and secondary hardening of H21 die steel

Journal of Iron and Steel Research International, 2018
The effect of nitrogen on the microstructure and secondary hardening of H21 die steel was studied by using scanning electron microscope, X-ray diffraction, transmission electron microscope and dilatometer. The results demonstrate that nitrogen can enhance the secondary hardening behavior of H21 hot-working die steel without toughness lose.
Jin-bo Gu, Hua-qing Liu, Jing-yuan Li, Yan-bin Jiang, Rui-jin Chang   +4 more
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Study of the thermal fatigue crack initial life of H13 and H21 steels

Journal of Materials Processing Technology, 1998
Abstract This paper has defined the thermal fatigue crack initial (TFCI) life from the viewpoint of engineering. According to the modified Manson–Coffin expression and the strain range caused by thermal stress, a new expression: N i = K (Δ T −Δ T o ) −2 is derived to describe the TFCI life.
Guobin Li, Xiangzhi Li, Jianjun Wu
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Wear and Fatigue Behaviour of Deep Cryogenically Treated H21 Tool Steel

Transactions of the Indian Institute of Metals, 2019
The influence of deep cryotreatment before and after double tempering on hardness, wear rate, surface finish and fatigue limit of AISI H21 tool steel has been examined. In the present work, H21 tool steel has been subjected to heat treatment at 1195 °C, double tempering at 540 °C, deep cryotreatment at − 185 °C and soft tempering at 100 °C.
Dileep Korade, Kavuluri Venkata Ramana, Kirankumar Jagtap   +2 more
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Complete genome sequence of a novel virulent phage ST31 infecting Escherichia coli H21

Archives of Virology, 2018
More and more virulent phages that are fundamental materials for phage therapy have been isolated, characterized and categorized on GenBank. Phage ST31 infecting Escherichia coli H21 was isolated from wastewater and sequenced using an Illumina Hiseq system.
Honghui, Liu, Yanwen, Xiong, Xinchun, Liu, Jinqing, Li   +3 more
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Screening of food raw materials for the presence of Shiga toxin-producingEscherichia coliO91:H21

Letters in Applied Microbiology, 2009
International audienceAims: To provide information on the prevalence and detection, in foods, of Shiga toxin-producing Escherichia coli (STEC) O91:H21.Methods and Results: Seven hundred fifteen minced beef meats and 205 raw milk samples were analysed by ...
Frédéric Auvray
exaly   +2 more sources

Biofilm formation, invasiveness and colicinogeny in locus of enterocyte and effacement negative O113:H21 ShigatoxigenicEscherichia coli

Journal of Applied Microbiology, 2017
AimsAlthough Shiga toxins (Stx) are well-established virulence traits of O113:H21 Shigatoxigenic Escherichia coli (STEC) strains, a shortage in the knowledge of other virulence properties that may contribute to pathogenesis may exist in this serotype ...
Bec Guth
exaly   +2 more sources

H21 Acne treatments through the ages

British Journal of Dermatology, 2023
Abstract The search for an effective treatment for acne dates back to 1550 Bc with the Ebers Papyrus, one of the oldest medical documents in the world, mentioning the application of raw honey and sulfur to affected areas. King Tutankhamun is widely believed to have suffered from acne as his tomb was filled with popular acne treatments of
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