نتایج جستجو برای: reduces growth and performance
تعداد نتایج: 17068787 فیلتر نتایج به سال:
در این مطالعه، عملکرد دو سیستم اکسیداسیون شیمیایی پیشرفته و یک سیستم بیولوژیکی برای حذف آموکسی سیلین در فاضلاب های سنتزیدر غلظت های مشابه با موارد صنعتی مورد بررسی قرار گرفته شدند. مطالعه انجام شده دارای سه بخش متفاوت اکسیداسیون با ازن و اشعه uv، اکسیداسیون با استفاده از نانو فتوکاتالیست tio2 و استفاده از بیوراکتور هوازی لجن فعال با جداکننده های فیزیکی می باشد. در هر بخش، متغیر های متفاوتی متنا...
in a sustainable agriculture system, application of the fertilizers which are nature friendly and suitable for plants is essential. this becomes more important when dealing with medicinal plants. therefore, a factorial experiment in a randomized complete block design with three replications was set up in the 2012-2013 on nigella sativa l. treatments were nanofertilizer (pharmks®) (at 2 levels ...
Salinity stress reduces plant metabolic activity, which reduces plant growth in saline environments. this study aimed to investigate the effect of salinity stress as one of the limiting factors of plant growth and the effect of nanoparticles on stress conditions as one of the auxiliary factors in plant control against stressful conditions by studying physiological factors such as soluble sugars...
Thyroid hormones [Triiodothyronine (T3) and thyroxine (T4)] are also known to play an important function in biological processes such as growth, sexual development, osmoregulation, metamorphosis, temperature tolerance, migration, oxygen consumption, and metabolism in different fish species. The objective of this study was to examine the effects of T4 injection on growth performance, and reprodu...
چکیده در بخش اول این پروژه دو روش میکرواستخخرا به نامهای میکرواسخخرا امولسیونی با کمک اموا فراصتتتو 1 و میکرواستتتخخرا مای – مای با کمک هوا 2 ، به عنوان دو روش میکرواستتتخخرا بدون حلال پخشکننده 3 ، برای اسخخرا برخی هیتدروکربتنهای آروماتیتک حلقوی 4 از نمونتههای آبتی بهکار گرفخه و پارامخرهای موثری همچون نوع حلال اسختتتتخرا کننده، حجم حلال اسخخرا کننده، میزان نمک، زمان تابش اموا فراصتو ، تددا...
World industrialization and population growth are the main reasons for the increase in environmental contamination with aromatic hydrocarbons. The presence of these compounds in the environment leads to a variety of stresses in plants and finally reduces their growth. Pyrene is one of the major toxic contaminants belonging to polycyclic aromatic hydrocarbons. Hence, in this research, the effect...
the present study was an attempt to compare the effect of peer metalinguistic corrective feedback on elementary and intermediate efl learners speaking ability to see which level benefits more from this type of feedback. to this end, 117 female efl learners at grade 3, al-zahra high school in kermanshah, iran were non-randomly chosen. the homogeneity of the participants was attained through a pi...
One of the significant incentives of the investors to enter the capital market is to earn profits and finally increase wealth. However, one of the most important concerns of the investors while investing in the stock market is the liquidity of the stocks. Thus, the high liquidity of the stock market reduces the risk of non-liquidity of the stock, as well as reduces the cost of capital accumulat...
this paper presents a data envelopment analysis (dea) model combined with bootstrapping to assess performance of one of the data mining algorithms. we applied a two-step process for performance productivity analysis of insurance branches within a case study. first, using a dea model, the study analyzes the productivity of eighteen decision-making units (dmus). using a malmquist index, dea deter...
this study surveys on the effects of l-lysine and methionon amino acids on growth performance, survival rate and body composition of rainbow trout (oncorhynchus mykiss). fish with initial average weight 105.23 + 6.33 g in 5 treatments fed with different levels of lysine (1 and 3 %) and methionine ( 1 and 2%) for 8 weeks. the results showed that the treatment which fed 2 % methionine had the be...
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