نتایج جستجو برای: chemical bath deposition

تعداد نتایج: 468634  

2007
O. Joshi

C on Biological Diversity(CBD), is the first international attempt to provide a legal framework for ensuring conservation and sustainable use of the genetic resources in addition to addressing concerns of equity. This international convention promotes services to the communities involved in creation and conservation of biological resources, in the form of adequate reward and compensation and as...

Journal: :Journal of Geographical Systems 2011
Geoffrey Caruso Gilles Vuidel Jean Cavailhès Pierre Frankhauser Dominique Peeters Isabelle Thomas

We present a model that simulates the growth of a metropolitan area on a 2D lattice. The model is dynamic and based on microeconomics. Households show preferences for nearby open-spaces and neighbourhood density. They compete on the land market. They travel along a road network to access the CBD. A planner ensures the connectedness and maintenance of the road network. The spatial pattern of hou...

2006
Dan Wu Ye Yang

More and more companies tend to use secure products as COTS to develop their secure systems due to resource limitations. The security concerns add more complexity as well as potential risks to COTS selection process, and it is always a great challenge for developers to make the selection decisions. In this paper, we provide a method for security risk analysis in COTS based development (CBD) bas...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت معلم تهران - دانشکده علوم 1379

سولفید سرب (pbs) از نیمه هادیهایی ترکیبی خانواده iv-vi با گاف انرژی 0.42ev از سال 1930 تا به حال به خاطر خواص ویژه اش مورد توجه محققان مختلف بوده است . pbs کاربردهای گوناگونی دارد ولی عمده کاربرد آن در ساخت آشکارسازهای نوری ir می باشد. در این کار لایه های نازک pbs با روش (chemical bath deposition) cbd روی زیرلایه های شیشه ای انباشت شدند. لایه هایی که ضخامت آنها در محدوده 0.03-0.12mm می باشد غیر...

Journal: :iranian journal of science and technology (sciences) 2005
m. sasani ghamsari

in this paper a chemical deposition procedure for the preparation of lead sulfide thin film ispresented. the details of the preparation method are described. the influence of hydrazine hydrate onthe microstructure and deposition rate of lead sulfide thin film has been investigated. the concentrationof the lead ions in the deposition bath decreases more slowly when the hydrazine hydrate is added...

2013
Ahmed Nagy Lusine Mkrtchyan Klaas Van Der Meer

Identifying a chemical, biological, radiological, and nuclear incident (CBRN) is a challenge. Evidence and health symptoms resulting from CBRN malevolent incident overlap with other normal non malevolent human activities. However, proper fusion of symptoms and evidence can aid in drawing conclusions with a certain degree of credibility about the existence of an incident. There are two types of ...

2016
Péter Kovács Rudesindo Núñez-Queija Hai L. Vu Neil Walton

We consider the decentralized scheduling of a large number of urban traffic lights. We investigate factors determining system performance, in particular, the length of the traffic light cycle and the proportion of green time allocated to each junction. We study the effect of the length of the traffic cycle on the stability region a urban traffic network. We derive a simple square-root cycle len...

2015

Industrial agricultural production in the tropics is known to have adverse social and environmental impacts (CBD, 2010). Firms —especially the ones exposed to consumer preference, such as retailers, processors and consumer goods manufacturers—are increasingly responding to these concerns. Nations in the tropics have established comprehensive political, legal and institutional frameworks to cons...

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