نتایج جستجو برای: emission spectrography

تعداد نتایج: 180330  

Journal: :international journal of occupational hygiene 0
milad derakhshan jazari msc of occupational health engineering, tehran university of medical sciences, tehran, iran mahdyeh boubehrejh national center of air and climate change, department of the environment, tehran, iran maryam avishan national center of air and climate change, department of the environment, tehran, iran jamshid gholampour [email protected] mohammad reza monazzam esmail pour professor of occupational health engineering, tehran university of medical sciences, tehran, iran mohsen meshkani [email protected]

original article   introduction: wind-turbine noise emission and its environmental impact are considerable issues nowadays. considering the importance of the issue, the purpose of this study was to prepare noise map and wind turbines sound characteristics on the largest wind farm of iran. method: this study was carried out in two phases:1) in order to prepare the daytime sound level (ld) noise ...

2015
Junhua Dong

The atmospheres in many cities along the coastal lines in the world have been rapidly changed to coastal-industrial atmosphere. Hence, it is vital to investigate the corrosion behavior of steel exposed to this kind of environment. In this present study, Electrochemical Impedance Spectrography (EIS) and film thickness measurement were applied to monitor the corrosion behavior of weathering steel...

2013
Yifei Yang Changqin Gu Yonghong Liao Qingping Luo Xueying Hu Wanpo Zhang Huabin Shao Guofu Cheng

Riemerella anatipestifer was cultured in both iron restriction media and normal media. Two-dimensional gel electrophoresis identified 23 proteins that significantly increased in the iron restriction media. Of them 12 proteins were analyzed with mass spectrography. Nine of 12 proteins belong to 6 different protein families: fibronectin type iii domain protein, secreted subtilase family protein, ...

Journal: :Asian Pacific journal of cancer prevention : APJCP 2011
Liang Feng Wai Au-Yeung You-Hua Xu Shan-Shan Wang Quan Zhu Ping Xiang

Prunella vulgaris L. (PV) has been used as a herb for chemoprevention of lung cancer. In this study, the main active compound, oleanolic acid (OA) was isolated from an ethanol extract and its chemical structure was identified according to the results of high performance liquid chromatography (HPLC), high performance thin layer chromatography (HPTLC) and liquid chromatography-mass spectrography ...

2013
Gyanendra Kumar Gaur Shekhar Srivastava

Many Organothallium Compounds have been used in medicine, industry and antibacterial activity. Optical properties are among the most fascinating and useful properties of many complexes and have been extensively studied using a variety of optical spectroscopic techniques. A basic understanding of the optical properties and related spectroscopic techniques is essential for characterization about ...

2003
BERT L. VALLEE JOHN G. GIBSON

The literature contains few references to the quantitative determination of zinc in human blood. It is difficult to compare the scant data which are available because of the divergence of the methods used and of the units in which different authors chose to express their results (l-5). It became apparent in the pursuit of our work on zinc in leucocytes and red blood cells, preliminary reports o...

2016
Shu-Wei Huang Jinghui Yang Mingbin Yu Bart H McGuyer Dim-Lee Kwong Tanya Zelevinsky Chee Wei Wong

Optical frequency combs-coherent light sources that connect optical frequencies with microwave oscillations-have become the enabling tool for precision spectroscopy, optical clockwork, and attosecond physics over the past decades. Current benchmark systems are self-referenced femtosecond mode-locked lasers, but Kerr nonlinear dynamics in high-Q solid-state microresonators has recently demonstra...

In the present work, a one pot, rapid and room temperature photochemical Synthesis of transition metal (TM; Cu, Mn, Cr)-doped ZnSe/ZnS core/shell nanocrystals (NCs) was reported. FT-IR spectrum confirmed the capping of ZnSe by thioglycolic acid. XRD and TEM analysis demonstrated zinc blende phase NCs with an average size of around 3 and 5 nm for TM:ZnSe and TM:ZnSe/ZnS NCs, respectively. PL spe...

Journal: :Blood 1998
T Edmunds S M Van Patten J Pollock E Hanson R Bernasconi E Higgins P Manavalan C Ziomek H Meade J M McPherson E S Cole

Recombinant human antithrombin (rhAT) produced in transgenic goat milk was purified to greater than 99%. The specific activity of the rhAT was identical to human plasma-derived AT (phAT) in an in vitro thrombin inhibition assay. However, rhAT had a fourfold higher affinity for heparin than phAT. The rhAT was analyzed and compared with phAT by reverse phase high-performance liquid chromatography...

Journal: :Clinical Interventions in Aging 2008
Michael P Cannito Joel C Kahane Lesya Chorna

Aging of the larynx is characterized by involutional changes which alter its biomechanical and neural properties and create a biological environment that is different from younger counterparts. Illustrative anatomical examples are presented. This natural, non-disease process appears to set conditions which may influence the effectiveness of botulinum toxin injection and our expectations for its...

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