نتایج جستجو برای: 6374 989 pc1 0 2 pc2 0 19 pc3 0 094 pc4

تعداد نتایج: 3171491  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم پایه دامغان - دانشکده شیمی 1391

در این تحقیق، تاثیر نانو سریای اضافه شده بر ساختار و فعالیت نانوپروسکیت lacoo3، تهیه شده به صورت lacocexo(3+?) که در آن x مقادیر 0/0، 1/0، 2/0، 3/0، 4/0 و 5/0 است، به عنوان کاتالیزور مبدل برای تبدیل آلاینده های خروجی از اگزوز خودروها به ترکیبات بی ضرر دی اکسیدکربن و آب بررسی شد. این کاتالیزور ها به روش سیترات تهیه شدند. به طور خلاصه ابتدا محلولی از مقادیر مولی مناسب از نیترات های فلزی و اسید سی...

Journal: :Jurnal Aplikasi Bisnis dan Manajemen 2023

Due to the significant impact of Covid-19 pandemic, culinary MSMEs must be able survive and continue their business. This study aims analyze condition SMEs in Pekalongan indicators that play most role shaping recovery resilience Pekalongan. used a non-probability sampling method involving 103 respondents from Culinary actors with several parameters distributed through online questionnaires in-p...

بهدانی, محمد, تجبر, ناصر, یزدانیان, سمیه,

In this research, YBa2Cu3O7-d (0 < d < 1) nanocrystalite superconductor was prepared by mechanochemical alloying method. We synthesized YBa2Cu3O7-d via mixing the BaCO3, Y2O3, CuO powders and milling in SPEX 8000 for 5h with weight ratio of ball to powder 10:1 and steel balls of 11mm diameter, followed by heating for 4h at 850 ˚C. The superconductor phase formation process was completed with si...

2017
Ronnie Sebro Gina M Peloso Josée Dupuis Neil J Risch

Genetic similarity of spouses can reflect factors influencing mate choice, such as physical/behavioral characteristics, and patterns of social endogamy. Spouse correlations for both genetic ancestry and measured traits may impact genotype distributions (Hardy Weinberg and linkage equilibrium), and therefore genetic association studies. Here we evaluate white spouse-pairs from the Framingham Hea...

Journal: :Eurasian journal of soil science 2021

Fluoride contamination has now become an emerging concern in agroecosystems. A diagnostic survey was conducted across the fluoride (F-) contaminated wetlands of Kuttanad, India with aim to examine influence edaphic factors on F- concentration soils. The soils (Inceptisols) predominantly sandy had a substantial percentage clay and soil characteristics such as bulk density (BD), moisture, tempera...

Journal: :journal of sciences islamic republic of iran 0

thin films of binary bi 0 -teo and bi 0 -v 0 systems were prepared by the thermal co-evaporation technique in a vacuum at room temperature. the optical absorption edge of these systems are studied in the wavelength of 200-800 nm using a perkin-elmer uv/vis spectrophotometer. it is found that the value of n=3/2 in the davis-mott equation is best fitted for the fundamental absorption edge for the...

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