نتایج جستجو برای: environmental control

تعداد نتایج: 1656815  

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه دانشهای بنیادی (مرکز تحقیقات فیزیک نظری و - پژوهشکده فیزیک 1387

چکیده این پایان نامه به بررسی اثر سیم پیچ مغناطیسی و کاوه یِ خوشه گر با بسامد رادیویی بر هاله و بیرونگراییِ باریکه هایِ پیوسته و خوشه ایِ ذرات باردار در شتابدهنده های خطیِ یونی، پروتونی با جریان بالا می پردازد و راه حل هایی برای بهینه نگهداشتن این کمیتها ارایه می دهد. بیرونگرایی یکی از کمیتهای اساسی باریکه هایِ ذرات باردار در شتابدهنده ها است که تاثیر قابل توجهی بر قیمت، هزینه و کاراییِ هر شتابدهند...

Journal: :Environmental Modelling and Software 2005
Jesper Mazanti Aaslyng Niels Ehler Lene Jakobsen

To integrate dynamic model based climate controlling in real-time with an environmental control computer a system integration interfacedBipsArchdwas developed. The three main objectives were: (1) to supply standard routines for communication with the environmental control computer. (2) to establish a set of databases to represent the current informational environment for the greenhouse. (3) to ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده علوم 1391

in this thesis, we consider a mathematical model of cancer with completely unknown parameters. we study the stability of critical points which are biologically admissible. then we consider a control on the system and introduce situations at which solutions are attracted to critical points and so the cancer disease has auto healing. the lyapunov stability method is used for estimating the un...

Journal: :Chemical communications 2014
Geetika Chadha Yan Zhao

The nucleophilic catalysis by a pyridyl group in ester/phosphate ester hydrolysis was modulated by the microenvironmental hydrophobicity around the catalyst. The catalytic efficiency was enhanced thousands or tens of thousands of times and the activity was maintained well below the pKa of the pyridyl group.

Journal: :Nano letters 2011
V Fatemi M Kamenetska J B Neaton L Venkataraman

The conductance of individual 1,4-benzenediamine (BDA)-Au molecular junctions is measured in different solvent environments using a scanning tunneling microscope based point-contact technique. Solvents are found to increase the conductance of these molecular junctions by as much as 50%. Using first principles calculations, we explain this increase by showing that a shift in the Au contact work ...

1999
Juan Camilo Cardenas

Regulations that are designed to improve social welfare typically begin with the premise that individuals are purely self-interested. Therefore, in a situation in which private and social interests diverge, it should be possible to bring about a welfare improvement by imposing rules that provide the necessary incentives for more socially efficient choices. However, experimental evidence shows t...

2000
J. Loncaric S. V. TSYNKOV

We present a mathematical framework for the active control of time-harmonic acoustic disturbances. Unlike many existing methodologies, our approach provides for the exact volumetric cancellation of unwanted noise in a given predetermined region of space while leaving unaltered those components of the total acoustic field that are deemed as friendly. Our key finding is that for eliminating the u...

2008
Konstantinos Dalamagkidis Dionysia Kolokotsa

Journal: :Injury prevention : journal of the International Society for Child and Adolescent Injury Prevention 1998
I Roberts

Journal: :Environmental Health Perspectives 1975
M Treshow

A retrospective analysis of 108 cases of primary germ cell tumours of testis seen over a 6 year period at Institute Rotary Cancer Hospital of All India Institute of Medical Sciences, New Delhi is presented. There were 45 (42%) cases of seminoma and 63 (48%) of non-seminomatous germ cell tumours (NSGCT). The median age at presentation was 35 and 30 years respectively. Almost half (56) patients p...

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