نتایج جستجو برای: environmental standard limits

تعداد نتایج: 977848  

ژورنال: سنجش و ایمنی پرتو 2014

Iranians are replacing traditional incandescent lamps with Compact Fluorescent Lamps (CFLs), because they use about a quarter of the power of incandescent lamps and their lifecycle is up to ten times longer. Government encourages public to use CFLs too, for saving energy and reducing carbon dioxide emissions. Small amounts of mercury are used in CFLs, released to the environment if they are bro...

2014
Mansooreh Dehghani Amir Anushiravani Hassan Hashemi Narges Shamsedini

BACKGROUND Expanding cities with rapid economic development has resulted in increased energy consumption leading to numerous environmental problems for their residents. The aim of this study was to investigate the correlation between air pollution and mortality rate due to cardiovascular and respiratory diseases in Shiraz. METHODS This is an analytical cross-sectional study in which the corre...

Journal: :Journal of applied science and environmental management 2023

This study investigated the physicochemical characteristics and heavy metals levels in water sediments of Obodo Oilfield Warri South Local Government Area Delta State using standard laboratory-approved APHA ASTM methods. Results indicated traces present sediments. Temperature TDS samples were within DPR established limits while TSS, Chemical Oxygen Demand, Salinity Biochemical Demand higher tha...

BACKGROUND:Raw and roasted nuts are one of the most popular snacks consumed in Iran but mishandling and poor storage conditions and practices may lead to promote the growth of microorganisms and foodborne intoxications and infections. OBJECTIVES:The purpose of this study was to investigate the microbial quality of raw and roasted (salted and unsalt- ed) n...

2005
Richard H. Cyburt Brian D. Fields Keith A. Olive Evan Skillman

A recent analysis of the He abundance determined from observations of extragalactic HII regions indicates a significantly greater uncertainty for the He mass fraction. The derived value is now in line with predictions from big bang nucleosynthesis when the baryon density determined by WMAP is assumed. Based on this new analysis of He, we derive constraints on a host of particle properties which...

2008
Marko B. Popovic

We constrain the physical Higgs mass by using a set of assumptions related to the high-energy behavior of “bare” parameters of the effective Standard Model. In the regular case we find that the Higgs mass must lie in the window 160(168) ≤ m H < 295 GeV. In the unconventional case, with opposite sign for running of the scalar’s mass, we find that the Higgs must be lighter than roughly vEW ≈ 246 ...

1996
Darwin Chang Wai-Yee Keung

New limits on couplings λjk , which break both the baryon number and the R–parity, are derived by using a new mechanism that contributes to the neutronanti-neutron oscillation. The constraints due to proton decay and its potential phenomenology are also reexamined. The minimal supersymmetric standard model (MSSM) [1] has been widely considered as a leading candidate for new physics beyond Stand...

2006

Upper limits on the cross section for Standard-Model Higgs-boson production in p¯ p → H + X at √ s = 1.96 TeV are determined for 100 < mH < 200 GeV/c 2. The contributing processes include associated production (W H → νb ¯ b, ZH → + − /ν ¯ νb ¯ b, and W H → W W + W −) and gluon fusion (H → W + W −). Analyses are conducted with integrated luminosities from 260 pb −1 to 950 pb −1 recorded by the D...

2016
Ralf Laue Christian Mueller

This paper provides a critical analysis of the BPSim standard, a specification by the Workflow Management Coalition. The aim of this standard is to make it possible to exchange simulation models between different modeling and simulation tools. We discuss the expressiveness of BPSim model and come to the conclusion that it will be sufficient for certain cases, but also lacks some important featu...

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