نتایج جستجو برای: air precooling

تعداد نتایج: 205822  

Journal: :Journal of Horticultural Research 2022

Abstract Recently, there has been an increasing need to prolong the quality of matured fruits promote distribution fresh consumers and processing facilities. Studies have shown that 1-methylcyclopropene (1-MCP), inhibitor ethylene, can maintain firmness several for a long duration. Therefore, aim this study was examine effect 1-MCP treatment on firmness, rind color, decay rate Japanese pear ‘Sh...

Journal: :international journal of advanced design and manufacturing technology 0
mohammad akhondzadeh islamic azad university, ahvaz branch mehrdad vahdati k. n. toosi university of technology

air pads are applicable in ultra precision machines very much. two main components of these machines, spindle and table, use the advantages of such systems. the performance and efficiency of air pads have big influence on the whole machine quality. parameters affecting pressure distribution of air tables may be considered as, 1) air compressing method, 2) air nozzle diameter, shape, and size, 3...

Journal: :ارتقای ایمنی و پیشگیری از مصدومیتها 0
محمد رضا مسعودی نژاد mohamadreza massoudinejad دانشگاه علوم پزشکی شهید بهشتیسازمان اصلی تایید شده: دانشگاه علوم پزشکی شهید بهشتی (shahid beheshti university of medical sciences) الهام نیک نهاد elham niknahad دانشگاه آزاد اسلامی واحد علوم تحقیقاتسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch)

background and objective: bioaerosols are particles of microbes, viruses and derivatives; they exist in a wide variety of shapes and sizes and can be measured with different air samplers. the purpose of this study is the determination of bacterial aerosol in the air of hospitals and the determination of contaminated areas for disinfection proceedings by hospital health care teams, by selecting ...

Journal: :تحقیقات نظام سلامت 0
کاظم ندافی دانشیار، گروه مهندسی بهداشت محیط، دانشکده بهداشت و انستیتو تحقیقات بهداشتی، دانشگاه علوم پزشکی تهران، تهران، ایران. رامین نبی زاده دانشیار، گروه مهندسی بهداشت محیط، دانشکده بهداشت و انستیتو تحقیقات بهداشتی، دانشگاه علوم پزشکی تهران، تهران، ایران. شاهرخ نظم آرا کارشناسی ارشد، گروه مهندسی بهداشت محیط، دانشکده بهداشت و انستیتو تحقیقات بهداشتی، دانشگاه علوم پزشکی، تهران، ایران. حشمت اله نورمرادی دانشجوی دکتری، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران. فاضل محمدی مقدم دانشجوی دکتری، مرکز تحقیقات محیط زیست، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران.

background: contemporary development of growing urban communities and increasing the economical and industrial activities in the current century without paying attention to assess the effect of these activities on human health, as the axis of the development, is caused urban air pollution and risks from different pollutant emissions. tehran air pollution has received considerable media coverage...

Journal: :international journal of advanced design and manufacturing technology 0
mohammad akhondzadeh islamic azad university, ahvaz branch mehrdad vahdati k. n. toosi university of technology

air spindles are one of the main elements of precise machine tools. vibration of these spindles is one of the vital issues necessary for investigation. among parameters which influence air spindle vibrations are rotational speed, compression air method, input nozzle diameter, air gap pressure. in this study using ansys, the effects of air gap thickness on air spindle vibrations have been invest...

2010
Anthony UNG Lucien WALD Thierry RANCHIN Christiane WEBER Jacky HIRSCH Gilles PERRON Joseph KLEINPETER

The mapping of air quality over the city of Strasbourg and its vicinity requires an increase of the number of measurements aiming at spatializing information about air pollutants concentrations. A methodology based on a multisource approach for mapping air pollutants concentrations over the city was presented in previous communications. One step of the methodology is the estimation of pollutant...

Journal: :Physical Review A 2021

A quantum resonator in a thermal-equilibrium state with high temperature has large average population and is featured significant occupation over Fock states excitation number. The could be cooled down via continuous measurements on the ground of coupled two-level system (qubit). We find, however, that measurement-induced cooling might become inefficient high-temperature regime. Beyond conventi...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید