نتایج جستجو برای: acid treatment

تعداد نتایج: 2045918  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور مرکز - دانشکده علوم 1391

سنتز پلیمرهای کوئوردیناسیونی جدید از لیگاندهای 2-آمینو نیکوتینیک اسید، 2-کینولین کربوکسیلیک اسید، 2-پیرازین کربوکسیلیک اسید در ابعاد توده، با روش گرایان دمایی و با استفاده از شاخه ی جانبی انجام شده است، این پلیمرها توسط روش طیف سنجی ir شناسایی و پایداری گرمایی آن ها توسط تجزیه های وزن سنجی حرارتی (tga) و تجزیه ی گرمایی تفاضلی (dta) بررسی شده است. در ادامه، ساختار این ترکیبات توسط بلورنگاری پرتو...

Micronutriens deficiency is prevalent in case of drought stress conditions, so complementary boron and zinc nutrition are important for crops to overcome drought stress. This study evaluated the effect of zinc and boron foliar application on physiological traits of sesame under different irrigation levels. The experiment was conducted as a split plot in a randomized complete block design with t...

اصغری , محمد رضا, رسمی, یوسف, روحی, زهره,

Application of polyamines has been reported to improve shelf life in different fruits. In this research the effect of different concentrations of putrescine with hot water on postharvest life of kiwifruit (Actinidia deliciosa cv. Hayward) at 0 ± 0.5°C was studied. Fruits were treated with putrescine (0, 1 and 2 mmol/L) and stored for 16 weeks. Fruit quality attributes assessment including firmn...

Journal: :Journal of Japan Society on Water Environment 1992

2015
Di Tie Ning Guo Zhouyang Zhao Ning Su Jing Li Yang Zhang Anders E. W. Jarfors

Al-0.9Si-0.6Mg (wt%) alloy conductive wires were designed and produced by continuous rheo-extrusion process. The effects of different heat treatment on microstructure, mechanical and conductive properties of the wires were studied. Results show that, after T6 heat treatment, conductive property of the alloy increased while elongation decreased with the higher aging temperature and longer aging ...

Journal: :Annals of science 1980
H J Cook N H Steneck A J Vander G L Kane

S u m m a r y Two overriding considerations shaped the development of early research on the biological effects of microwave radia t ion--poss ib le medical application (diathermy) and uncer ta in ty about the hazards of exposure to radar. Reports in the late 1940s and early 1950s of hazards resulting from microwave exposure led to the near abandonment of medical research related to microwave di...

2014
Mei-Chih Chen Shih-Lan Hsu Ho Lin Tsung-Ying Yang

Retinoic acid which belongs to the retinoid class of chemical compounds is an important metabolite of vitamin A in diets. It is currently understood that retinoic acid plays important roles in cell development and differentiation as well as cancer treatment. Lung, prostate, breast, ovarian, bladder, oral, and skin cancers have been demonstrated to be suppressed by retinoic acid. Our results als...

2016
J. F. P. McConnell

hoped, were sufficiently full and precise to enable impartial readers to see that the investigation was carried on in neither a " dilettante nor perfunctory" manner ; and I may now add that all arrangements were under my personal supervision, that I -was almost continuously with the patients from first to last, and that I was energetically assisted by students who volunteered for this special d...

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