نتایج جستجو برای: steel 2205
تعداد نتایج: 81598 فیلتر نتایج به سال:
*To whom correspondence should be addressed: RAL Dept. of Molecular Biosciences, 18 Northwestern University, 2205 Tech Drive, Evanston, IL 60208-3500 Telephone: 847-491-5433; 19 Fax: 847-491-2467; e-mail: [email protected]; or AAK – Dept. of Biochemistry and 20 Molecular Biology, The University of Chicago, 900 E. 57th Street, Chicago, Illinois, 60637; 21 Telephone: 773-702-9257; Fax: 773-...
Status of This Memo This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. Abstract This document proposes an extens...
Propionibacterium acnes is an anaerobic Gram-positive bacterium that forms part of the normal human cutaneous microbiota and is thought to play a central role in acne vulgaris, a chronic inflammatory disease of the pilosebaceous unit (I. Kurokawa et al., Exp. Dermatol. 18:821-832, 2009). Here we present the whole genome sequence of P. acnes type IB strain 6609, which was recovered from a skin s...
INTRODUCTION ............................................................................. 2190 I. EXAMPLES OF NEW PROPERTY RIGHTS ....................................... 2193 A. Spectrum ................................................................................... 2194 1. Shannon’s Law and the Cumulative Nature of Interference ................................................... 2194 2. G...
At present, with the adjustment of the structure of the steel industry, the steel logistics industry is also engaged in integrating. Steel logistics resource integration is an important problem to be solved. Based on previous research on steel logistics resource integration, this paper proposes a new research perspective on steel logistics resources integration: supply-demand network of steel l...
STEVEN R. BEISSINGER,1,6 J. MICHAEL REED,2 JOSEPH M. WUNDERLE, JR.,3 SCOTT K. ROBINSON,4 AND DEBORAH M. FINCH5 1Department of Environmental Science, Policy and Management, 151 Hilgard Hall, University of California, Berkeley, California 94720, USA; 2Department of Biology, Tufts University, Medford, Massachusetts 02155, USA; 3International Institute of Tropical Forestry, USDA Forest Service, Box...
Ferrous metals include cast iron, steel, and the various steel alloys, The only difference between iron and steel is the carbon content. Cast iron contains more than 2-percent carbon, while steel contains less than 2 percent. An alloy is a substance composed of two or more elements. Therefore, all steels are an alloy of iron and carbon, but the term “alloy steel” normally refers to a steel that...
در این تحقیق بررسی تأثیر حرارت ورودی و عملیات حرارتی بعد از جوشکاری بر خواص اتصال جوش غیر مشابه فولاد زنگ نزن دو فازی 31803uns s به فولاد l316 پرداخته شده است.جوشکاری در سه حرارت ورودی مختلف انجام شد. تأثیر عملیات حرارت بعد از جوشکاری در دماهای 1000، 1075 و 1150 درجه سانتی گراد در زمان های 20، 40، 60 و 90 دقیقه و حرارت ورودی، بر ریز ساختار، خواص مکانیکی و رفتار خوردگی بررسی گردید. برای جوشکاری ...
This paper presents the mechanical properties of high strength structural steel and mild structural steel at elevated temperatures. Mechanical properties of structural steel at elevated temperatures are important for fire resistant design of steel structures. However, current design standards for fire resistance of steel structures are mainly based on the investigation of hot-rolled carbon stee...
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