نتایج جستجو برای: فاکتور pren

تعداد نتایج: 13684  

Journal: :Steel Construction 2021

Many steel rope systems are subjected to fluctuating tensile loads and therefore can fail due fatigue. There indications that the fatigue resistance of full-locked coil ropes is somewhat lower than other types rope. Fatigue test data on have been collected, but they terminate at different conditions. A semi-empirical model employed extrapolate results full failure The resulting S-N curve being ...

Journal: :The Annals of occupational hygiene 2007
Li-Ching Tseng Rong Fung Huang Chih-Chieh Chen Cheng-Ping Chang

The laser-light-sheet-assisted smoke flow visualization technique is performed on a full-size, transparent, commercial grade chemical fume cupboard to diagnose the flow characteristics and to verify the validity of several current containment test methods. The visualized flow patterns identify the recirculation areas that would inevitably exist in the conventional fume cupboards because of the ...

2013
Erhard Bieberich Guanghu Wang

Pluripotency and self renewal are the two primary characteristics of pluripotent stem cells (PSCs) [1]-[4]. Pluripotency refers to the capacity of a single cell to give rise to any cell type of an embryo or an adult animal [5],[6]. A mammalian organism is developed from a single fertilized egg, the zygote, in an extremely ordered and error-proof fashion [7]. The zygote and the subsequent 2 to 4...

2011
Alice H. England Andrew M. Duffin Craig P. Schwartz Janel S. Uejio David Prendergast Richard J. Saykally

0009-2614/$ see front matter 2011 Elsevier B.V. A doi:10.1016/j.cplett.2011.08.063 ⇑ Corresponding authors. Address: Department California, Berkeley, CA 94720, USA. Fax: +1 510 642 E-mail addresses: [email protected] (D. Pren edu (R.J. Saykally) The dissolution of carbon dioxide in water and the ensuing hydrolysis reactions are of profound importance for understanding the behavior and contr...

Journal: :Steel Construction 2021

Many steel rope systems are subjected to fluctuating tensile loads and therefore can fail due fatigue. Available fatigue test data indicate that diameter, mean stress, socket type, lay angle length influence the resistance. Most of tests were terminated before full failure ropes. This paper shows termination criterion, such as fracture first wire, 5 % wires or fracture, has a large on resulting...

Journal: :ce/papers 2023

Abstract The application of design by finite element analysis (FEA) is becoming increasingly prevalent in applied engineering; however, codified provisions remain scarce. vision CEN/TC 250/SC 3 was to develop a new comprehensive document based on the existing currently distributed throughout different Eurocode parts, and with extension where necessary cover all fields structural steel design. W...

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