نتایج جستجو برای: fall and spring run
تعداد نتایج: 16847782 فیلتر نتایج به سال:
The Çaygören Reservoir was sampled monthly from February 2007 to January 2009 at three stations to determine the relationships between the chlorophyll-a (Chl-a) dynamics and soluble reactive phosphorus (SRP), nitrate-nitrogen (NO3-N), ammonium-nitrogen (NH4-N), water discharge, water transparency, water temperature (T), specific conductance (SC) and pH. Thermal stratification occurred in the re...
The Çaygören Reservoir was sampled monthly from February 2007 to January 2009 at three stations to determine the relationships between the chlorophyll-a (Chl-a) dynamics and soluble reactive phosphorus (SRP), nitrate-nitrogen (NO3-N), ammonium-nitrogen (NH4-N), water discharge, water transparency, water temperature (T), specific conductance (SC) and pH. Thermal stratification occurred in the re...
Measurement of chlorophyll-a can be considered important to investigate the primary production of an ecosystem. This study aimed to investigate chlorophyll-a concentration, primary production and the factors affecting them in Shadegan Wetland located in Khouzestan Province - Iran. Sampling for measuring (NO3, PO4, BOD5, DO, pH, EC, salinity, temperature) was performed seasonally at five samplin...
Background & Aim: Aflatoxin B1 (AFB1) acts as a genotoxic, cytotoxic, and a potential hepatocarcinogen agent. Any contact with aflatoxins is a main threat to workers in the waste management industry. On the other hand, just a few studies have investigated occupational exposure to mycotoxins in the aforementioned industry. In this study, the exposure level of workers to dust and AFB1 has been in...
Major insect pests of fresh-market tomato, Lycopersicon esculentumMiller, in eastern Virginia were identified as those responsible for reducing marketable fruit yield from 1998 through 2000. Nineteen arthropod pest species infested springand fall-grown tomato crops, but only thrips, stink bugs, and Lepidopterans, particularly the corn earworm (Helicoverpa zea [Boddie]), reduced yield. Fruit inj...
The Çaygören Reservoir was sampled monthly from February 2007 to January 2009 at three stations to determine the relationships between the chlorophyll-a (Chl-a) dynamics and soluble reactive phosphorus (SRP), nitrate-nitrogen (NO3-N), ammonium-nitrogen (NH4-N), water discharge, water transparency, water temperature (T), specific conductance (SC) and pH. Thermal stratification occurred in the re...
The Çaygören Reservoir was sampled monthly from February 2007 to January 2009 at three stations to determine the relationships between the chlorophyll-a (Chl-a) dynamics and soluble reactive phosphorus (SRP), nitrate-nitrogen (NO3-N), ammonium-nitrogen (NH4-N), water discharge, water transparency, water temperature (T), specific conductance (SC) and pH. Thermal stratification occurred in the re...
Temperature is one of the most important climate variables that many economic and social plans related to its changes. Because of The importance of this issue, this study investigated the changes of it in the province Khuzestan. Meteorological data that used in this study is mean temperature in annual and seasonal timescale. The study area is Abadan, Ahwaz, Dezful and Omidiye stations. For anal...
Abstract Four years of feedlot performance and carcass characteristics were pooled on spring-(SPRING) fall-(FALL) born steers (n=460) into a mixed model to evaluate the effects calving season, sire breed (Angus [AN], Charolais [CHAR] or Hereford [HER]) their interaction traits. Initial final BW, DOF, ADG, DMI, G:F evaluated as measures HCW, YG, FT, REA, MS collected at harvest. There was no sea...
the objectives of this study were to determine the diversity, seasonal dynamics and abundance of ticks infesting cattle in isfahan zone, iran. the study was conducted in three traditional cattle farms. no acaricides had been applied to cattle at the selected farms. adult ticks were collected twice per month from different parts of the cattle's body. environmental data, including relative h...
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