نتایج جستجو برای: acoustic cabin

تعداد نتایج: 87600  

Journal: :Scientific American 1904

2008
Feng Qiu Bin Zhang Kaloian Petkov Lance Chong Arie E. Kaufman Klaus Mueller Xianfeng Gu

We present a novel custom-built 3D immersive environment, called the Immersive Cabin (IC). The IC is fully enclosed with an automatic door on the rear screen, and thus very different from existing CAVE environments. Our IC, the construction of the projection screens and stereo projectors as well as the calibration procedure are explained in details. The projectors are driven by our Visual Compu...

ژورنال: سلامت کار ایران 2012
نصیری, پروین , کاوسی, امیر , حمیدی, منصوره, دهقان, حمیدرضا , همدانی, ابوالفضل, کیانی, سجاد ,

  Background and aims: Noise pollution is one of the risk factors of the human environment that may seriously threat physical and mental health of human beings. One of the main sources of this type of pollution is the noise produced by urban transportation and traffic, particularly subway in the environment. This article aims at study and evaluation of the noise condition in drivers’ cabin and ...

1999
J. König C. Strauss

Airlines and their services are very often part of the supply chain in tourism. Therefore, the quality of on-board service contributes to the passengers’ overall satisfaction with the entire journey. Given that the cost of personnel is the second highest component of direct operational costs next to fuel, airlines are more inclined to reduce the level of their workforces rather than to invest i...

Journal: :Occupational and environmental medicine 2003
E A Whelan

R ecent reports highlighting increased cancer incidence and mortality among airline pilots and cabin crew have raised concerns about potential exposure of these workers to known or suspected carcinogens, in particular cosmic ionising radiation. Higher radiation dose rates are found at higher altitudes and in the polar regions, and mean doses to flight crew have been increasing over time as long...

2017
Helge Brändström Anna Sundelin Daniela Hoseason Nina Sundström Richard Birgander Göran Johansson Ola Winsö Lars-Owe Koskinen Michael Haney

BACKGROUND Post-craniotomy intracranial air can be present in patients scheduled for air ambulance transport to their home hospital. We aimed to assess risk for in-flight intracranial pressure (ICP) increases related to observed intracranial air volumes, hypothetical sea level pre-transport ICP, and different potential flight levels and cabin pressures. METHODS A cohort of consecutive subdura...

Journal: :Occupational and environmental medicine 2005
K Kojo E Pukkala A Auvinen

BACKGROUND Earlier studies have found increased breast cancer risk among female cabin crew. This has been suggested to reflect lifestyle factors (for example, age at first birth), other confounding factors (for example, age at menarche), or occupational factors such as exposure to cosmic radiation and circadian rhythm alterations due to repeated jet lag. AIMS To assess the contribution of occ...

Journal: :جنگل و فرآورده های چوب 0
حوری شریف نیا دانشگاه تربیت مدرس سعید کاظمی نجفی گروه علوم و صنایع چوب و کاغذ، دانشکده منابع طبیعی ، دانشگاه تربیت مدرس مهدی احمدی نجف آبادی دانشگاه صنعتی امیر کبیر

with the aim of identifying failure mechanism in oriented strand boards, failure behavior of wood strands under tensile load was investigated using acoustic emission technique. resinated and unresinated strands were arranged at top, middle and bottom section of the board before pressing. tensile and acoustic emission tests were performed simultaneously on treated and control samples. using tens...

Journal: :ارتقای ایمنی و پیشگیری از مصدومیتها 0
نبی الله منصوری n mansouri دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهرانسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch) محمد رضا مسعودی نژاد mr massoudinejad دانشگاه علوم پزشکی شهید بهشتی محمد علی آموزگار ma amozgar دانشگاه تهرانسازمان اصلی تایید شده: دانشگاه تهران (tehran university) بهاره علی پناهی b alipanahi دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهرانسازمان اصلی تایید شده: دانشگاه آزاد اسلامی علوم و تحقیقات (islamic azad university science and research branch)

background and aim: carbon monoxide is colorless and odorless gas. in high concentrations, co is deadly poisonous and in low concentrations can cause fatigue, headache, dizziness and seizures. carbon monoxide has a high affinity to combines hemoglobin which can decrease oxygen capacity in blood. to address this problem, human body begins to produce red blood cells, this can increases blood visc...

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