نتایج جستجو برای: 70 were extracted
تعداد نتایج: 3635626 فیلتر نتایج به سال:
the purpose of this study was to examine the comparative effect of story retelling and role playing on efl learners’ vocabulary learning and reading comprehension. to carry out the purpose of the study 90 female learners of tabarestan language school located in noshahr were non-randomly selected. they took pet test and among these 90 participants 62 students were selected as homogenous learners...
a simple, sensitive and selective method for solvent extraction and spectrophotemetric determination of lanthanum (ii) europium (iii), and cerium (iii) is described , the rare earth metals are extracted into chloroform solution of n-phenylbenzohydroxamic acid (pbha) at ph 9-10 various parameters are studied to optimize the extraction conditions. the molar absorptivity is found to increase from ...
the present study seeks to determine the effect of explicit instruction of metacognitive strategies on iranian high school students’ reading comprehension ability. it also attempts to investigate the relationship between the learners reading comprehension and metacognitive strategies. furthermore, the study investigates whether iranian efl female high school students are high, medium, or low me...
Background: Arthritis is one of the most common inflammatory diseases worldwide. It is characterized by symptoms such as systemic inflammation and autoantibody production. The molecular mechanisms in pathogenesis of arthritis are not fully understood. Studies show that many microorganisms, including Mycoplasmas, play a role in arthritis. The PCR method is a fast and accurate molecular method fo...
PURPOSE This study aimed to assess the efficacy of 3D surface-rendered (SR) magnetic resonance (MR) images for surgical planning of uterine fibroids. METHODS Ten patients with uterine fibroids underwent 3D volume isotropic turbo spin-echo acquisition (VISTA) sequences in sagittal planes. SR images showing the uterine body, endometrium, and fibroids were extracted from the raw MR data. The pre...
Taking monascin as the research object, was extracted from red kojic rice by ethanol extraction and with 60%, 70% 80% respectively. Finally, it concluded that when concentration of 70%, rate highest, reached 75.68%. The bacteriostatic experiments extract fermentation showed had strong inhibitory effect on Staphylococcus aureus Bacillus subtilis , weak ability Escherichia coli Aspergillus niger ...
BACKGROUND AND AIMS Covalent linkages between xyloglucan and rhamnogalacturonan-I (RG-I) have been reported in the primary cell walls of cultured Rosa cells and may contribute to wall architecture. This study investigated whether this chemical feature is general to angiosperms or whether Rosa is unusual. * METHODS Xyloglucan was alkali-extracted from the walls of l-[1-3H]arabinose-fed suspens...
Evaluation of silkmoth (Bombyx mori) allergens in sericultue grainage industries as major pollutants
Allergens from scales and cuticles of abdomen and wing of silk moth, Bombyx mori, causatives of allergic rhinitis have been subjected to solubilization with SDS (2%), urea (8M) and guanidine hydrochloride (6M). Allergens (70%) were extracted and all the solvent extracts contained an approx similar complement of allergens. Allergen composition of abdomen and wing scales differ from one another a...
Supercritical fluid extraction (SFE) was applied to extraction of pesticides from cereals and pulses. Residues were extracted from homogenized samples mixed with water-absorbent polymer and supercritical carbon dioxide in a stainless steel tube, followed by elution with acetonitrile. Co-extractives were removed by means of mini-column clean-up. Measurement was performed by GC-MS/MS. Calibration...
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