نتایج جستجو برای: intensive system was 13893 kgha
تعداد نتایج: 5553318 فیلتر نتایج به سال:
background: biofloc technology is considered a method that degrades organic waste by microorganisms and produces bacterial flocculation. objectives: this study was performed to evaluate of the application of biofloc technology in therearing of common carp (cyprinus carpio) fingerlings in intensive culture. methods: the experiment was designed in four treatments (commercial diet as a control, 7...
we have two part in this thesis, at first: the interaction of native calf thymus dna (ct-dna) with two anthraquinones including quinizarin (1,4- dihydroxy anthraquinone) and danthron (1,8- dihydroxy anthraquinone) in a mixture of 0.04 m brittone-robinson buffer and 50% of ethanol were studied at physiological ph by uv-vis absorption, florescence, circular dichroism spectroscopic methods, viscos...
the application of e-learning systems - as one of the solutions to the issue of anywhere and anytime learning – is increasingly spreading in the area of education. content management - one of the most important parts of any e-learning system- is in the concern of tutors and teachers through which they can obtain means and paths to achieve the goals of the course and learning objectives. e-learn...
abstract the primary purpose of this study was to explore the actual practices and cognitions of two groups of iranian eap teachers, i.e. language teachers and content teachers, with respect to teaching reading-comprehension and vocabulary. to this end, tehran university of medical sciences which authorizes both groups of teachers to teach eap courses was selected as the context of the study s...
In order to reduce the herbicide rate, the combination of cultivation and eradicane herbicide application was tested under field conditions. Treatments including tillage practices of without cultivation, one cultivation and two cultivation and eradicane herbicide application levels of 0, 1.5, 3, 4.5, 6 Lha -1 were tested . Eradicane herbicide was used before plantation. Cultivation treatments...
In 1994, in a prospective control trial in cyclosporinetreated, kidney transplant patients, we observed that treatment of a non-specific allograft injury (postischemic reperfusion injury) leads to a significant reduction in the incidence of both specific alloimmune-mediated allograft rejection and chronic allograft failure. From these convincing clinical data, we concluded in terms of an ‘argum...
To the Editor—The statement by the Infectious Diseases Society of America (IDSA) [1] is the keenest analysis of the institutional review board (IRB) system ever published in a medical journal. It describes a regulatory regime swamped with pointless paperwork (eg, the Health Insurance Portability and Accountability Act [HIPAA]), multiple IRBs making irreconcilable decisions whose inconsistency r...
Orthogonal Frequency Division Multiplexing (OFDM) is a method of encoding digital data on multiple carrier frequencies. OFDM has developed into a popular scheme for wide-band digital communication. Despite its advantages, it has a major drawback of its high Peak-to-Average Power Ratio (PAPR) value which degrades its efficiency and increases its cost. In this paper, two proposed systems are disc...
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