چکیده : * در یک واکنش تک ظرفی و با استفاده از واکنش آلدهید های آروماتیک و 3- متیل 1- فنیل پیرازولین-5- ان با نسبت مولی 1:1، ساختارهای هتروسیکل پیرازول سنتز شد. از مزایای آن، انجام واکنش در دمای اتاق، عدم نیاز به کاتالیزور، بازده بالای واکنش، استفاده از آب بعنوان حلال سبز و بی خطر به جای حلال های آلی وسمی می باشد . * توانستیم با استفاده از ملدرام اسید ومشتقات 2- هیدروکسی بنزآلدهید، ترکی...

this study was designed to investigate the impacts of teachers self-disclosure on students foreign language classroom anxiety, attitude to english language learning and their achievement scores at the end of the term. there were 48 female learners of intermediate level. they were not randomly selected. there were one experimental group with 21 students and one control group with 27 students.the...

Rice is a second important crop at Iran and its cooking and eating quality plays important role for consumers. In order to improve yield and quality, a set of crosses among Amol3 and Sepidrood made with Dom­­­Siah Mashhad and Sange Jo. The F1 was back crossed with local varieties as donor parents for two successive generations (BC2) and then selfed upto five generations (BC2F5). 13 promising li...

Purpose of the present study is empowerment of schools with emphasis on social care system of students to present a model. The research method was mixed (qualitative - quantitative), in qualitative part grounded theory was used and descriptive-survey method was used in quantitative part. participants in the qualitative section included all those responsible the plan, specialists and experts in ...

This study aimed at determining the most suitable spacing (plant and ridge) in the conventional melon cultivation in Varamin region in order to achieve higher yield and marketable fruits. The experiment was conducted as a strip split plot statistical design with three replications, in two years, at the Agricultural Research Center of Varamin, Iran. The main factor (vertical) included four plant...

To investigate some quantitative and qualitative traits of genotypes a field study was performed as augmented experiment consisting four checks (Sadri, Koosha, KS21676 and KS21682) and138 genotypes. Vegetative, morphological and agronomical characteristics as well as traits related to pod and seed were studied. Statistical analysis showed that number of seeds per plant and plant height had the ...

Abstract Background and Objective: Prevention of medical laboratory errors is a major goal of quality control programs. Hemolyzed specimen is one of the common issues causing medical laboratory errors. Apart from the visual assessment, the measurement of serum hemoglobin concentration can be another method to evaluate the intensity of hemolysis. We aimed to assess hemolyzed serum s...