نتایج جستجو برای: relative addition rate

تعداد نتایج: 1897930  

Journal: :Journal of experimental botany 2001
R L Walker I G Burns J Moorby

This paper investigates the effects of uptake of nitrate and the availability of internal N reserves on growth rate in times of restricted supply, and examines the extent to which the response is mediated by the different pools of N (nitrate N, organic N and total N) in the plant. Hydroponic experiments were carried out with young lettuce plants (Lactuca sativa L.) to compare responses to eithe...

Journal: :The Journal of Agriculture of the University of Puerto Rico 1969

Journal: :Journal of Mathematical Analysis and Applications 1993

Hashem Noferesti Mahdi Soltani Pooneh Ebrahimi حجت جعفریان,

Bacillus spp. are Gram-positive spore-forming bacteria used commercially as probiotics in the larviculture of fish. Bacillus spp. can act positively on cultured organisms by enhancing their survival and growth, stimulating their digestive and immune systems, and improving water quality. In this present study, grass carp larvae were fed on Artemia urmiana, Artemia fransiscana and Artemia parthen...

Mahnaz Qomi, Marjan Gholghasemi Mohammad Reza Saadat Sahel Emadzadeh

In this study, hollow fiber liquid phase microextraction (HF-LPME) coupled with highperformanceliquid chromatography (HPLC) with UV detection was applied for preconcentrationand determination of Diclofenac sodium in biological fluids. Parameters affecting the extractionprocess including pH of donor phase and acceptor phase, type of extraction solvent, stirring rate,extraction time, and salt add...

Journal: :iranian journal of fisheries science 0
x.m. wang j.w. gao b.l. mo b.l. mo w. dai ch.x. chen

in order to estimate responses of growth rate and growth hormone of clarias gariepinus to stocking density, fish (initial weight 30.71 ± 0.89 g) were stocked in 120-l tanks at densities of 35, 65, 95, and 125 kg/m3 for 60 days. on day 30 and 60, the fish growth rates were measured, pituitary growth hormone (gh) mrna levels and serum gh concentrations were examined by real-time qpcr and elisa te...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید