نتایج جستجو برای: fiber

تعداد نتایج: 130252  

ژورنال: مهندسی دریا 2009
علیمحمدی, کاپیتان مالک, موسوی, سید یحیی, پیرایش‌فر, امیر سهیل,

According to the high demand of fiberglass/polyester composites in marine applications, this paper has studied the properties of these composites. It has also been shown that isophthalic polyester has better properties than orthophthalic polyester, in marine applications. This paper has also investigated the vinyl ester and phenolic resin stability especially in the sea water and has shown that...

شعبان رحیمی, , محمد رضائیان, , تقی قورچی, , غلامرضا قربانی, ,

An experiment was carried out to estimate the potential activity of rumen anaerobic fungi in the degradation of dry matter and fiber of feeds. Samples of wheat bran, bagasse, cotton seed, alfalfa and corn silage were used as the substrates to culture rumen fungi which were isolated from a fistulated Shal sheep. Loss percentages of dry matter (DML), neutral detergent fiber (NDF), acid detergent ...

Journal: :iranian journal of science and technology transactions of civil engineering 2015
h. başaran a. demir m. bağci e. ercan

in this paper the traditional covering plaster of masonry buildings is supplied with polypropylene and steel fiber to enhance their seismic behavior. the plaster mix proportion is determined by some initial mortar tests. also, one story, single span masonry building specimen plastered with different mortars is tested on a shaking table 8 times under a seismic input and the performance of the sp...

Journal: :journal of agricultural science and technology 2012
m. alikhasi m. kouchakzadeh e. baniani

shortage of irrigation water is a crucial problem especially in arid and semiarid regions; therefore, application of wastewater in agriculture in such regions seems to be an indispensable solution. a field experiment was conducted in non-agricultural soil to investigate the effect of treated municipal wastewater (tmw) on the yield and fiber quality of cotton (gossypium hirsutum l.) crop. the tr...

Journal: :iran agricultural research 2012
m. heidarieh m. soltani a. h. tamimi m. h. toluei

the present study examined the effects of vitacel raw fiber on great sturgeon (huso huso) immunocompetent cell population size including lymphocyte and neutrophil populations and lysozyme activity after oral administration of the feed and vitacel at 1.3% of the feed for 90 days. generally, a significant increase was seen in the neutrophil count of fish receiving vitacel as compared to the contr...

Journal: :polyolefins journal 2015
jalil morshedian yousef jahani farshad sharbafian foroogh zarei

hdpe monofilaments were obtained using different extruders and drawn by post-extruder equipments. after solidification, drawn and undrawn monofilaments (draw ratio 7:1) were irradiated with 10 mev electron beams in air at room temperature at 25, 50, 75, 100 and 125 kgy dose ranges to induce a network structure. hdpe crosslinking was studied on the basis of gel content measurements. the fibers w...

Journal: :journal of dentistry, tehran university of medical sciences 0
m. vojdani aar. khaledi

statement of problem: fracture strength of a denture base resin is of great concern, and many approaches have been used to strengthen acrylic resin dentures. purpose: the aim of this study was to measure the transverse strength of a heat polymerized acrylic resin, after reinforcement with metal wire and two types of glass fibers. materials and methods: forty rectangular specimens (65.0×10.0×3.3...

Journal: :journal of dentistry, tehran university of medical sciences 0
f. heravi sm. moazzami s. tahmasbi

objective : the aim of this study was to evaluate fracture characteristics of rigid two-tooth segments splinted with fiber reinforced composite (frc), with and without application of simulated masticatory forces. material and methods: in this experimental study, 80 extracted maxillary bicuspids were joined in pairs from the buccal aspect using frc. the specimens were divided into two groups. in...

A. Sagir B. Baran Ç. Karademir E. Karademir, R. Ekinci

The objective of this study was to determine the effect of Verticillium dahliae Kleb. on cotton yield and fiber technological properties, relationships among to disease and seed cotton yield, fiber yield and fiber technological properties and also determine susceptible and tolerant cotton varieties. The study was conducted in the Southeastern Anatolia Agricultural Research Institute’s exper...

In this study, carbon nano fibers (CNFs) were mixed into epoxy resin through a magnetic stirrer and again mixed using ultra sonicator. Using hand layup technique, biaxial braided fiber composites were prepared with unfilled, 0.2, 0.5 and 1 wt% CNF. Tensile test and shear test was performed to identify the tensile strength and shear strength of the composites. Fractured surface of the tensile sp...

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