نتایج جستجو برای: protective materials

تعداد نتایج: 545555  

Journal: :avicenna journal of phytomedicine 0
reza heidari department of biology, faculty of science, urmia university, urmia, i. r. iran vahid nejati department of biology, faculty of science, urmia university, urmia, i. r. iran minoo ilkhanipoor department of biology, faculty of science, urmia university, urmia, i. r. iran

objective: barberry root extract contains various alkaloids that are considered as antioxidants. beneficial effect of aqueous extract of berberis integerrima root (aebir) was evaluated for renal function in diabetic rats induced by stz. material and methods: diabetes was induced by i.p. injection of streptozotocin (65 mg/kg bw) to rats, after 15 h of fasting. diabetic rats were randomly grouped...

Journal: :iranian journal of immunology 0
fatemeh vahedi immunology research center, mashhad university of medical sciences, mashhad, iran naser taiebi meibody department of pathology, imam reza hospital, mashhad university of medical sciences, mashhad, iran mahdi kianizadeh razi vaccine and serum research institute, mashhad, iran mahmoud mahmoudi immunology research center, mashhad university of medical sciences, mashhad, iran

background: dna immunization with plasmid dna encoding bacterial, viral, parasitic and tumor antigens has been reported to trigger protective immunity. objective: to evaluate the use of a dna immunization strategy for protection against anthrax, a plasmid was constructed. methods: the partialsequence of protective antigen of bacillus anthracis, amino acids 175-764, as a potent immunogenic targe...

2011
Monika BIĽOVÁ Ervin LUMNITZER

Acoustical parameters of porous materials give the necessary and important information for noise control engineers. Profound knowledge their physical characteristics enable an effective sound absorber material design. The theory of sound-absorbing materials has progressed considerably during the last decade. A noise control engineer with serious interest in sound absorbing technology is advised...

Journal: :Archives of otolaryngology--head & neck surgery 2004
Neil Bhattacharyya Carol Richard

OBJECTIVE To determine the efficacy of various eye protection measures during carbon dioxide laser laryngoscopy. DESIGN A standard medical mannequin was equipped with indicator paper over the eyes and subjected to multiple passes of direct carbon dioxide laser beam contact at 400-mm focal length with powers ranging from 2.5 to 4.0 W during simulated laser microlaryngoscopy. Several different ...

2000
W. Douglas Bates Bernard M. Kosowski Curtis J. Meyers

High-density metals such as hafnium and zirconium are of interest to the propellant, explosive, and pyrotechnic industry due to their high oxidation enthalpies; however, these metal fuels suffer from electrostatic discharge (ESD) complications creating safety concerns. Previous attempts to passivate these powders have failed due to abrasion of the protective coatings. Two novel methods for dese...

Journal: :Journal of hazardous materials 2010
Paraskevi S Georgiadou Ioannis A Papazoglou Chris T Kiranoudis Nikolaos C Markatos

Emergency response planning in case of a major accident (hazardous material event, nuclear accident) is very important for the protection of the public and workers' safety and health. In this context, several protective actions can be performed, such as, evacuation of an area; protection of the population in buildings; and use of personal protective equipment. The best solution is not unique wh...

2011
Mohammad Jafar Golalipour Babak Kabiri Balajadeh Soraya Ghafari Ramin Azarhosh Vahid Khori

OBJECTIVES Urtica dioica L. has been known as a medicinal plant in the world. This study was conducted to determine the effects of the hydroalcoholic extract of Urtica dioica leaves on seminiferous tubules of diabetic rats. MATERIALS AND METHODS Animals were allocated to control, diabetic and protective groups. Treated animals received extract of U. dioica (100 mg/ kg/ day) IP for the first 5...

Journal: :iranian journal of cancer prevention 0
m mozafar mr sobhiyeh m heibatollahi

abstract background and aims: probable risk factors of clinical anastomotic leakage and the role of defunctioning stoma in patients undergoing low anterior resection (lar) for rectal cancer, is still controversial. the goal of our study was to find out possible risk factors of anastomotic leakage and to locate the influence of protective stoma in the rate of anastomotic leakage. materials and m...

Journal: :health scope 0
ebrahim taban department of occupational health engineering, faculty of medical sciences, tarbiat modares university, tehran, ir iran mohsen yazdani aval department of occupational health engineering, faculty of medical sciences, tarbiat modares university, tehran, ir iran omran ahmadi department of occupational health engineering, faculty of medical sciences, tarbiat modares university, tehran, ir iran mohammad miri department of environmental health engineering, school of public health, sabzevar university of medical sciences, sabzevar, iran mohammad fereidan department of occupational health engineering, school of health, lorestan university of medical sciences, khorramabad, ir iran maryam rostami aghdam shendi department of occupational health engineering, faculty of medical sciences, tehran university, tehran, ir iran; department of occupational health engineering, faculty of medical sciences, tehran university, tehran, ir iran. tel: +98-9365494864

results the mean age and work experience of workers were 31.39 ± 5.6 and 4.35 ± 2.5 years, respectively. among the exposed-to-noise personnel, 7.35% used hpds constantly; 75% used hpds for only short periods of time (less than four hours) and 17.65% did not make use of them at all. regarding the sound intensity and the level of noise reduction of hpds, among the 112 workers who used such device...

Journal: :Journal of infection in developing countries 2011
Narhari Timilshina Mohammad Aslam Ansari Vinita Dayal

INTRODUCTION Without protective practices such as antiseptic hand washing, the use of sterile/surgical gloves, safe needles, sterile equipment, and safe instrument and waste disposal procedures outlined in universal precaution guidelines, basic health workers (BHWs) are at substantial risk of blood-borne infections. METHODOLOGY This paper draws on research conducted in 28 primary health care ...

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