نتایج جستجو برای: environmental arrangement
تعداد نتایج: 405121 فیلتر نتایج به سال:
Today, the issue of sustainable development has become one of the most important global issues and has become the focus of attention and human attention in the economic, social, and environmental perspectives. Various human activities, as well as the development of industries and the expansion of urbanization with waste and wastewater, have contaminated soil. Different methods are available to ...
A finite simple graph ? determines a quotient P? of the pure braid group, called graphic arrangement group. We analyze homomorphisms these groups defined by deletion sets vertices, using methods developed in prior joint work with R. Randell. show that, for K4-free ?, product maps is injective, embedding free groups. Then residually free, torsion-free, torsion-free nilpotent, and acts properly o...
This article considers the seismic behavior of beam-to-column joints in steel frames for different bolt arrangements by using of finite element modeling. As the most important beam-to-column joint type, the beam-to-column joints with end-plate is chosen for the analysis. Four different specimens have been analyzed. These models had some differences such as bolt arrangement and the presence or a...
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