نتایج جستجو برای: climate chamber

تعداد نتایج: 211107  

Journal: :journal of current ophthalmology 0
اکبر درخشان akbar derakhshan مجتبی ابریشمی mojtaba abrishami پرویز معروزی parviz maerozi رامین دانشور ramin daneshvar

purpose : cataract surgery is the most common ocular surgery worldwide and in modern era of phacoemulsification with posterior chamber intraocular lens (pc iol) implantation, refractive aspects of surgery is as important as the surgery itself. after the iol implantation, the anterior chamber depth (acd) is increased and the iridiocorneal angle is widened. these changes should be considered for ...

Journal: :veterinary research forum 2012
saeed azizi rahim mohammadi keyvan amini roza fallah kiana karegar

despite promising results observed using silicone rubber chamber, no previous comprehensive work was performed on behavior of the conduit. present study aimed at further functional, histomorphometrical and immunohistochemical assessment of nerve regeneration in the same animal along a 10-mm rat sciatic nerve gap. fifty- four male wistar rats were divided into three experimental groups (n = 18),...

This research focuses on the need for preserving fruits in rural areas to prevent waste. The solar drier is made of vital chambers i.e. the concentrator chamber (that harvests the solar irradiance), the transport pipe (that transports the heat generated by convection) and hanger chamber (where the fruits are placed). The temperature within the concentrator chamber and hanger chamber was monitor...

زیوری دلاور, فاطمه , منظم, محمد رضا , نصیری, پروین ,

Introduction: The previous studies have used fibrous absorbents usually in the form of cone-shaped wedges for making anechoic and semi-anechoic chambers which their design and construction have been costly and difficult. The present study aimed to design a semi-anechoic chamber, using rectangular fibrous absorbents and also perform acoustic analysis for it. . Material and Method: In the presen...

Journal: :international journal of occupational hygiene 0
mehrdad helmi kohneshahri mahmoud mohamadian associate professor in occupational health engineering, department of occupational health engineering, school of public health, mazandaran university of medical sciences, sari, iran homa maleck khani ms student of occupational health engineering, department of occupational health engineering, school of public health, mazandaran university of medical sciences, sari, iran mehran pourhossein phd student of occupational health engineering, department of occupational health engineering, school of public health, tehran university of medical sciences, tehran, iran

spreading wood particles and attached colored materials in work places can cause many problems for woodwork industry workers. the aim of this study is to design and implement a local exhaust ventilation system to control wood dust and isocyanates simultaneously. the study was conducted on 18 workers in the paint workroom of a wood door industry. at first, an overview of the workplace indoor air...

Journal: :بینا 0
محمد پاکروان m pakravan ophthalmic epidemiology research center, shahid beheshti university of medical sciences, tehran, iranمرکز تحقیقات چشم- دانشگاه علوم پزشکی شهید بهشتی- تهران- ایران اعظم علوانی a alvani shahid bahonar university, kerman, iranمرکز تحقیقات چشم- دانشگاه علوم پزشکی شهید بهشتی- تهران- ایران الهام قهاری e ghahari مهدی یاسری m yaseri دانشکده بهداشت- دانشگاه علوم پزشکی تهران

trabeculectomy is the most common procedure performed in glaucoma patients to reduce intraocular pressure for a long-time period. this intervention can cause alterations in axial length (0.1-0.9 mm), anterior chamber depth (0.11±0.22 mm), and keratometry readings (1.07±1.14 diopter). these changes may linger for more than one year and may negatively affect the precision of intraocular lens powe...

Journal: :Science 2021

Faster than expected Iodine species are one of only a handful atmospheric vapors known to make new aerosol particles, which play central role in controlling the radiative forcing climate. He et al. report experimental evidence from CERN Cosmics Leaving Outdoor Droplets, or CLOUD, chamber demonstrating that iodic acid and iodous rapidly form particles can compete with sulfuric pristine regions. ...

ژورنال: سوخت و احتراق 2008

A computational study aiming to investigate the effect of combustion chamber geometry on combustion process and emission has been carried out in a direct injection diesel engine. The combustion process and emission of three different combustion chamber geometries were considered, and combustion process behaviors such as variation of mean pressure, velocity, heat release rate, emission productio...

Journal: :مهندسی بیوسیستم ایران 0
امین اله معصومی عباس همت علی شهریان

to reduce the storing space and handling costs for hay/straw bales, recompressing the original bales after adequate hay drying is recommended. in this project, a recompression machine was designed, constructed and evaluated. solidwork and nastran software were employed to model, and to analyze the stresses in the components of the machine, respectively. the components of the machine consisted o...

2017
Ole Petter NAESGAARD Tore Christian Bjørsvik STORHOLMEN Øystein Nordrum WIGGEN Jarl REITAN

Petroleum operations in the Barents Sea require personal protective clothing (PPC) to ensure the safety and performance of the workers. This paper describes the accomplishment of a user-centred design process of new PPC for offshore workers operating in this area. The user-centred design process was accomplished by mixed-methods. Insights into user needs and context of use were established by g...

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