نتایج جستجو برای: micro environmental

تعداد نتایج: 481380  

Journal: :Environmental monitoring and assessment 1995
G Engelen R White I Uljee P Drazan

Cellular automata provide the key to a dynamic modelling and simulation framework that integrates socio-economic with environmental models, and that operates at both micro and macro geographical scales. An application to the problem of forecasting the effect of climate change on a small island state suggests that such modelling techniques could help planners and policy makers design more effect...

2004
LaVern A. Starman J. Robert Reid Richard T. Webster John L. Ebel

RF Micro-Electro-Mechanical (MEM) switches have numerous potential applications from mode switching in cell phones at 1-2 GHz to phased array antennas for space-based radar applications. However, environmental factors such as temperature, humidity, and foreign contaminants play a significant role in switch reliability and lifetime. The effects of these environmental factors must be mitigated to...

Journal: :Journal of applied developmental psychology 2007
Lauren H Supplee Emily B Unikel Daniel S Shaw

Research on the development of externalizing behaviors during early childhood has focused on child and parenting factors. Fewer studies have investigated effects of aversive features of the micro-level physical environment, such as overcrowding and chaos in the home, and the macro-level environment, such as neighborhood quality. This study extends research on physical environmental factors by e...

2013
Ivana Pajic-Lijakovic Branko Bugarski Milenko Plavsic Steva Levic Ana Kalusevic Viktor Nedovic

Micro-environmental restriction effects to yeast cell growth obtained within Ca-alginate microbeads are considered. It is complex phenomenon influenced by: (1) relaxation of expanded polymer network around the cellular clusters, (2) forces generated by cell growth inside the beads and (3) interactions between solvent, network parts and cells. The resulting effects are measured experimentally by...

Journal: :Journal of vector ecology : journal of the Society for Vector Ecology 2003
A Wilamowski H Pener

The baseline and residual activity of micro-encapsulated insecticides was assessed on a sandfly colony originating in the Jordan Valley, Israel. Lethal doses were calculated for formulations of the pyrethroids permethrin and cypermethrin and the organophosphates diazinon and chlorpyrifos. Cypermethrin was found to be more toxic than permethrin and chlorpyrifos was more toxic than diazinon. Acco...

2014
U. Çavdar E. Atik A. Ataç

In this study; iron based powder metal (PM) bushing compacts were sintered via medium frequency induction heating system. Iron based powders were mixed with 2 wt.% copper (Cu), 0.3 wt.% carbon (C) and 1 wt.% zinc stearat (Zn-st) via V-Type mixer. PM compacts were sintered by 2 different sintering processes. One of them was conventional sintering method other was medium frequency induction sinte...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه گیلان - دانشکده علوم پایه 1390

جنس euphrasia l. از گیاهان نیمه انگل و متعلق به تیره scrophulariaceae می باشد که پراکنش جهانی دارد و اغلب در مناطق معتدل دو نیمکره شمالی و جنوبی پراکنده اند. این سرده در ایران دارای 6 گونه ,e. juzepczukii ,e. petiolaris e. salisburgensis ,e. sevanensis ,e. hirtella ,e. pectinata می باشد که عمدتا در شمال کشور پراکندگی دارند. مطالعه حاضر به منظور تمایز این گونه ها با استفاده از صفات ریخت شناسی، ت...

Journal: :Croatian medical journal 2007
Olja Druzić Ljubotina Damir Ljubotina

AIM To investigate how students in Croatia perceive causes of poverty and to examine the differences in attributions of poverty between students of social work, economics, and agriculture. METHODS The study included 365 participants, students of social work (n=143), economics (n=137), and agriculture (n=82). We used the newly developed Attribution of Poverty Scale, consisting of 4 factors, as...

Journal: :Lecture notes in mechanical engineering 2023

Abstract The dry machining strategy has recently received high attention in the field of metal cutting as it can eliminate environmental impacts associated with usage fluids. However, high-generated heat and severe tool wear are usually observed for operations. One suggested techniques to improve performance is utilize textured tools, reducing friction at chip-tool interface. In this study, thr...

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