نتایج جستجو برای: ageing heat treatment

تعداد نتایج: 1595727  

2011
Gerardo Sanchez Martinez Chisato Imai Kanako Masumo

The adverse health effects from hot weather and heat waves represent significant public health risks in vulnerable areas worldwide. Rising temperatures due to climate change are aggravating these risks in a context of fast urbanization, population growth and societal ageing. However, environmental heat-related health effects are largely preventable through adequate preparedness and responses. P...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان 1389

run-out-table (rot) is located between last finishing stand and down coiler in a hot strip mill. as the hot steel strip passes from rot, water jets impact on it from top and bottom and strip temperature decreases approximately from 800-950 °c to 500-750°c. the temperature history that strip experience while passing through rot affects significantly the metallurgical and mechanical properties, s...

2012
Jerrold Petrofsky Lee Berk Hani Al-Nakhli

Type 2 diabetes (T2D) and ageing have well documented effects on every organ in the body. In T2D the autonomic nervous system is impaired due to damage to neurons, sensory receptors, synapses and the blood vessels. This paper will concentrate on how autonomic impairment alters normal daily activities. Impairments include the response of the blood vessels to heat, sweating, heat transfer, whole ...

2016
Masao Kunioka Tomio Shimada Hideaki Hagihara Masahiro Funabashi Hiroyuki Suda

A quick method involving the control of heat and water vapor pressure for preparing moisture-saturated carbon fiber-reinforced plastics (CFRP, 8 unidirectional prepreg layers, 1.5 mm thickness, epoxy resin) has been developed. The moisture-saturated CFRP sample was obtained at 120 ̋C and 0.2 MPa water vapor in 72 h by this method using a sterilizer (autoclave). The bending strength and viscoela...

2011
Petroula A. Tarantili

The effect of accelerated ageing on the structure and properties of single, metallized and multilayer films used in food packaging was studied, by exposing specimens of the above films to repeated ageing cycles in a weatherometer, under the combined action of UV, humidity and heat. The investigated films were: biaxially oriented polypropylene film (BOPP), metallized BOPP film, polyethylene (PE)...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیخ بهایی - دانشکده زبانهای خارجی 1392

critical thinking ability has an important role in education. accordingly, scholars around the world are searching for new ways for teaching and improving students critical thinking ability. in line with the studies in efl contexts supporting the positive relationship between critical thinking and writing performances, this study investigated the differential effects of halverson’s critical thi...

Journal: :journal of advanced materials and processing 0
khalil gheisari department of materials science and engineering, faculty of engineering, shahid chamran university, ahvaz, iran mohammad reza abasi department of materials science and engineering, faculty of engineering, shahid chamran university of ahvaz, ahvaz, iran

dissimilar metals friction welding of austenitic–martensitic stainless steels is commonly used in order to manufacture engine valves in the automobile industry. in this study, x53crmnnin219 (austenitic stainless steel) and x45crsi93 (martensitic stainless steel) valve steel rods were welded by friction welding process. the welded joint was then heat treated at 760 0c for 60 min. mechanical prop...

Journal: :international journal of iron & steel society of iran 2004
a.r kiani-rashid d. v. edmonds

the influence of aluminium on the microstructure of austempered ductile cast iron (adi) has been studied. anumber of irons of different compositions have been made by green sand casting and gravity die casting ofappropriate design to provide the experimental materials. austenitising was carried out at different temperaturesand holding times for a variety of experimental irons to achieve suffici...

Journal: :تحقیقات مهندسی کشاورزی 0
فوژان بدیعی استادیار پژوهش موسسه تحقیقات فنی و مهندسی کشاورزی

the glass transition temperature (tg) and the melting temperature (tm) of gelatin at water contents between 7 and 14% were measured using differential scanning calorimetry.  the plasticisation of the polymer by water led to a decrease in tg and tm. the tg of partially crystalline gelatin was higher than that of the amorphous one obtained by quenching from the melt. the enthalpy relaxation occur...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید