نتایج جستجو برای: space structures barrel vaults
تعداد نتایج: 926091 فیلتر نتایج به سال:
At first we introduce the space-time manifold and we compare some aspects of Riemannian and Lorentzian geometry such as the distance function and the relations between topology and curvature. We then define spinor structures in general relativity, and the conditions for their existence are discussed. The causality conditions are studied through an analysis of strong causality, stable causality ...
Physical models and scaled prototypes of architecture play an important role in design. They enable architects and designers to investigate the formal, functional, and material attributes of the design. Understanding digital processes of realizing scaled prototypes is a significant problem confronting design practice. This paper reports on three approaches to the translation of Gaussian surface...
Vaults are 13 megadalton ribonucleoprotein particles composed largely of the major vault protein (MVP) and two high molecular weight proteins, p240 and p193, and a small vault RNA (vRNA). Increased levels of MVP expression, vault-associated vRNA, and vaults have been linked directly to multidrug resistance (MDR). To further define the putative role of vaults in MDR, we produced monoclonal antib...
the aim of this study was to identify the problems of translating markedness structures from english to persian in order to look closely at what possible difficulties translators may face. it also seeks to probe the strategies applied accordingly by iranian translators in translating them. from three translation of blindness novel, the sentences with marked structures were elicited and also the...
At the end of shaft penetration under protection ice barrier and termination process freezing rocks, transition period from to thawing begins. First all, tubing support trunk layer rocks adjacent concrete are subjected thawing. this time, water is pumped through grouting holes in check tightness column, after which performed with cement mortar fixed space. Thus, an integral part work on waterpr...
Barrel-type structures are ubiquitous in industry and life. A novel construction platform of barrel-type is introduced, it involves a multi-motor system. The synchronous control multiple motors has great importance. To guarantee the high precision, stability, fast response for collaborative motors, this paper proposes cooperative strategy. Firstly, speed synchronization structure between perman...
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