Effects of Some Growth Substances on Mitosis

Effects of some growth substances on mitosis.

Radiomimetic action of growth substances, also called hormones, has been demonstrated by several workers Some of the growth substances are used as growth promotors while others are used as herbicides for weed control. As they prove toxic beyond certain concentrations, it is fruitful to study their effects at different concentrations. This paper describes the results of an experiment involving d...

Some effects of plant growth-regulating substances on microorganisms.

Effects of Nigella sativa Allelochemical Substances on Growth-Inhibiting of Flixweed Compared With Wheat (Triticum aestivum)

The aim of this study was to evaluate the toxicity of black cumin (Nigella sativa) extract on germination and growth of flixweed (Descurainia Sophia) seedlings grown in wheat (Triticum aestivum) fields, isolation and identification of important bioactive compounds of its aqueous extract. Two factorial experiments were conducted in a completely randomized design with three replications. In each ...

the effects of error correction methods on pronunciation accuracy

هدف از انجام این تحقیق مشخص کردن موثرترین متد اصلاح خطا بر روی دقت آهنگ و تاکید تلفظ کلمه در زبان انگلیسی بود. این تحقیق با پیاده کردن چهار متد ارائه اصلاح خطا در چهار گروه، سه گروه آزمایشی و یک گروه تحت کنترل، انجام شد که گروه های فوق الذکر شامل دانشجویان سطح بالای متوسط کتاب اول passages بودند. گروه اول شامل 15، دوم 14، سوم 15 و آخرین 16 دانشجو بودند. دوره مربوطه به مدت 10 هفته ادامه یافت و د...

Some Biological Effects of Radio- Active Substances

All rabbits were kept together in one large runway, having access to both outdoors and indoors, The food was cabbage, carrots, sugar beets, and bran. The animals were well cared for. The lighting, heating, and ventilation were first-rate. Nine normal, adult rabbits were divided into 3 lots of 3 animals each. There were 2 females. One was placed in Lot No. 1 and the other in Lot No.3. Lot No. 1 ...