An integrated solar combined cycle (ISCC) is analyzed at "off-design" operating conditions. Using the principles of thermodynamics heat and mass transfer a computer code is developed in FORTRAN programming language to simulate the system’s hourly performance under steady state conditions. Three scenarios are considered for the study. In the first one, only the combined cycle (CC) is studied. In...

Abstract The modulation of the diurnal cycle (DC) precipitation over Maritime Continent (MC) by background annual mean state was studied for period 1998–2014 through observational analyses and high-resolution simulations using Weather Research Forecasting (WRF) Model. reveal that there are statistically significant differences in DC amplitude between boreal winter summer. reduces about 35% duri...

Aim Migration is often identified as the most vulnerable period in the annual cycle for birds, and land-use change is likely to have altered how avian populations are regulated during migration events. However, the consequences of land-use change for avian diversity are typically assessed based on annual surveys of breeding communities with little consideration given to migration or other phase...

The grey mullet fingerling were imported to Iran in 1997 from Hong Kong and in coastal fish pond of north part of Iran were successfully cultured in order to obtain broodstocks and induce artificial reproduction. Seasonal changes in serum concentrations of Testosterone, 17-β Estradiole (E2), 17-α Hydroxy Progesterone and also the level of calcium, Triglyceride and cholesterol in femal...

It is now evident that many species of plants and animals have long period physiologic cycles. In birds, the most striking of these cycles have a period of one year. Familiar examples are the annual cycles in organs associated with reproduction and migration (Farner, 1955, 1958, 1959). Less familiar are the annual cycles in such organs as the liver (Oakeson, 1953) and the thyroid gland (HShn, 1...

This research examines the behavior of ground-level solar UV radiation as measured by eight broadband meters in the continental United States during the period from late 1994 to late 1998. The goal is to define the variability that occurs in UV irradiance over time scales ranging from one to several years. The monthly integrated irradiances, from latitude 32 degrees N to 47 degrees N, contain l...

[1] Eight years of TOPEX/Poseidon altimeter-derived sea height anomaly and climatological hydrographic data are used to investigate the temporal and spatial variability of the North Brazil Current (NBC) retroflection and the North Equatorial Countercurrent (NECC). The NBC retroflection exhibits a mean position of 6.6 N± 2.0 , with a strong annual signal and year-to-year variability. The annual ...

A central hypothesis of eco-immunology proposes trade-offs between immune defences and competing physiological and behavioural processes, leading to immunological variation within and among annual-cycle stages, as has been revealed for some species. However, few studies have simultaneously investigated patterns of multiple immune indices over the entire annual cycle in free-living birds, and no...

The grey mullet fingerling were imported to Iran in 1997 from Hong Kong and in coastal fish pond of north part of Iran were successfully cultured in order to obtain broodstocks and induce artificial reproduction. Seasonal changes in serum concentrations of Testosterone, 17-β Estradiole (E2), 17-α Hydroxy Progesterone and also the level of calcium, Triglyceride and cholesterol in females grey mu...