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تعداد نتایج: 17013746 فیلتر نتایج به سال:
The leaf area index (LAI) is a key factor affecting tree growth in forests. Following the outbreak of a defoliator, the LAI declines, serving as a useful indicator in forest management. In this study, daily radiative transmittance from above the canopy, which decreases exponentially with increasing LAI, was measured in a teak plantation (Tectona grandis L. f.) in northern Thailand from March th...
[1] High‐frequency measurements of surface water partial pressure of CO2 (pCO2) in the Gulf of Trieste in the north Adriatic Sea, the most northern part of the Mediterranean, are presented. Sea surface pCO2 was measured at the coastal oceanographic buoy Vida (45° 32′ 55.68′′ N, 13° 33′ 1.89′′ E), using the Submersible Autonomous Moored Instrument for CO2 during four deployments from 2007 to 200...
Background: The benefit effect of L-carnitine is proposed for treatment of obesity as long time periods. So, in the present study, effect of L-carnitine on serum FSH, LH and testosterone levels in adult male rats is evaluated. Materials and Methods: Rats were treated different doses of L-carnitine tartarate daily for 16 days, peritoneally. The control group was treated saline as vehicle. After ...
River flow forecasting plays an important role in planning, management and operation of water resources. To achieve this goal and according to the phenomenon of global warming, it is necessary to simulate the daily time series of rainfall and runoff for future periods. Therefore, it is important to survey the detection of climate change event and its impact on precipitation and runoff in the ba...
The objective of this study was to evaluate the effects of weaning age on dry matter intake (DMI), average daily gain (ADG), feed efficiency (FE), feed cost (FC) and benefit index (BI) of Holstein calves reared under organic farming system. Thirty two Holstein calves were divided into two treatments: early weaning (EW) vs. late weaning (LW). Calves in the both groups were provided with whole mi...
Abstract In this paper, income per capita convergence hypothesis is tested in selected OIC countries. For this purpose, we use the time series model and univariate KPSS stationary test with multiple structural breaks (Carrion-i-Silvestre et al. (2005)) over the period 1950-2008. The results show that most OIC countries could not catch up toward USA. Although because of some positive term of tra...
Abstract Background: Rate of bites from animals suspected with rabies is increasing in Iran and post-exposure prophylaxis imposes a massive burden on the health system. This study is performed to assess the trend and the current status of animal bites in Tehran. Materials and methods: During the years of 1993-4 and 2008-9, data was collected from the records of persons bitten by animals sus...
Drought is a major problematic phenomenon mostly for semi-arid areas of Iran. During drought periods, reduction in vegetation levels causes such problems as soil erosion, surface runoff, flood risk, etc. Therefore, the assessment of drought effects on plant covers is the most important issue. This research was conducted in 2015 using the extracted vegetation indices from Moderate Resolution Ima...
Over the past four decades, Turkey has undertaken a wide range of reforms that aim at liberalisation foreign trade, relaxation tariff system, deregulation financial and investment regulations. Significant structural change experienced in Turkish economy pursues access to global market. This paper presents an empirical investigation growth prospects both manufacturing industry during whole perio...
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