نتایج جستجو برای: base and superstructure

تعداد نتایج: 16867852  

Journal: :Chemistry of Materials 2013

2002
G. Gutierrez P. Vega Pedro Ballesteros

Process Synthesis seeks to develop systematically process flowsheets that convert raw materials into desired products. In recent years, the optimization approach to process synthesis has shown promise in tackling this challenge. It requires the development of a network of interconnected units, the process superstructure, that represents the alternative process flowsheets. The mathematical model...

2015
Cui Wang Shaohua Liu Yingying Duan Zhehao Huang Shunai Che

The fabrication of optically active inorganic nanomaterials with chiral superstructures attracts attention because of their potential applications in chemical sensing and non-linear optics. Here, we present a facile way to prepare TiO2 nanofibres, in which the nanocrystals are helically arranged into a chiral superstructure. Notably, the chiral superstructure shows strong optical activity due t...

2007
Claudia Labrador-Darder Antonis C. Kokossis Patrick Linke

The paper presents a systematic approach for the extraction, interpretation and exploitation of design knowledge in process synthesis. Knowledge is developed in the course of superstructure optimisation. Semantic models (ontologies) and analytical tools are combined to simplify the superstructures and interpret solutions. In the course of the search the method translates intermediate solutions ...

Journal: :Inorganic chemistry 2012
Xiaochuan Duan Jianmin Ma Yan Shen Wenjun Zheng

In this work, a novel lead sulfide (PbS) hierarchical superstructure, denoted as octapodal dendrites with a cubic center, has been synthesized employing a simple single-source precursor route. Our experimental results demonstrate that the novel hierarchical superstructure was generated through the delicate balance between the kinetic growth and thermodynamic growth regimes. Moreover, the morpho...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران - دانشکده علوم اداری و مدیریت بازرگانی 1380

در ادراه امور سازمان نیز از تکنولوژی data base در دو زمینه مشخص یعنی بصورت سیستم های عملیاتی و سیستم های اطلاعاتی میتوان استفاده کرد. در شرایط کنونی وجود موانع متعدد از قبیل فرهنگ غالب در سازمان های بزرگ و طرز تلقی مدیران دیوان سالار از یکطرف و تازه گی و پیچیده بودن فنون مربوط به سیتم های data base فقدان دانش، تجربه و تخصص کافی برای بهره گیری کامل از آن از طرف دیگر، برنامه ریزی و اقدام برای ایج...

Journal: :Latin American Journal of Solids and Structures 2021

Abstract A numerical study is performed on the structure-soil-structure interaction (SSSI) between high-rise buildings. ANSYS has been further developed for calculation in frequency domain, which hysteretic damping can be considered both soil and structures. This presented two subsequent papers. The first part[1] focuses influence of SSSI each kind dynamic response, while second part, i.e., thi...

A Delnavaz, A Rahaee

Performance of structures during recent earthquakes shows that the effect of vertical component of earthquake (VCE) could be considered as one of the main causes of bridges collapse. In most of bridge design codes, for seismic analysis of bridges, VCE is not taken into account or a distinguished method isn’t presented for assessment of VCE. In the present work, the effect of VCE on two existing...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2013

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