نتایج جستجو برای: and phosphorus
تعداد نتایج: 16833769 فیلتر نتایج به سال:
In order to understanding of the VAM effects on functions and nutrition of the corn, a research was conducted in Agricultural Research Center of Safi Abad, Khouzestan. The experiment was carried out based randomized complete block design at four replications. The treatments contain Mycorrhiza Fungi and phosphorous includes: A: Phosphorus according to soil test. B: VAM + Phosphorus according to ...
background: osteopenia is common problem in premature infants. low-birth weight babies do not receive adequate amounts of calcium and phosphorus through breast feeding. this study examines the effect of calcium and phosphorus supplements on osteopenia in premature infants. methods: this clinical trial included 42 premature infants hospitalized at razi hspital in kermanshah. all the babies had a...
Food production requires application of fertilizers containing phosphorus, nitrogen and potassium on agricultural fields in order to sustain crop yields. However modern agriculture is dependent on phosphorus derived from phosphate rock, which is a non-renewable resource and current global reserves may be depleted in 50–100 years. While phosphorus demand is projected to increase, the expected gl...
Accumulation of phosphorus in soil is a major factor limiting the operational life of land application waste disposal systems. Moreover, for nutrient management purposes and evaluation of potential environmental problems it is necessary to understand the impact of manure application on soil phosphorus sorption characteristics. In this study laboratory experiments were conducted to investigate t...
background there has not been any published literature in iran about the evaluation of hemodialysis patients’ knowledge in relation to dietary sources of protein, phosphorus, potassium, sodium and fluids. objectives therefore, the present study was performed with this aim, in patients with renal failure treated with hemodialysis. patients and methods fifty hemodialysis patients were recruited. ...
Phosphorus is an essential element for life, serving as an integral component of nucleic acids, lipids and a diverse range of other metabolites. Concentrations of bioavailable phosphorus are low in many aquatic environments. Microalgae, including diatoms, apply physiological and molecular strategies such as phosphorus scavenging or recycling as well as adjusting cell growth in order to adapt to...
Swine production facilities today are larger in size and are concentrated in smaller geographical areas than they were two decades ago. Additionally, there is an increasing trend to base manure land application rates on crop phosphorus requirements rather than crop nitrogen requirements alone. These factors have resulted in a need to find a feasible method for removing phosphorus from swine was...
in mammals, phosphocalcic and bone metabolisms are mainly regulated by parathyroid hormone, parathyroid hormone-related peptide (pthrp) and 1α,25-dihydroxyvitamin d or calcitriol. in camels, circulating levels of calcitriol are 10 times higher than those determined in other ruminants and further increase during early lactation. calcitriol and parathyroid-related peptide stimulate intestinal abs...
Changes in human diets, population increases, farming practices, and globalized food chains have led to dramatic increases in the demand for phosphorus fertilizers. Long-term food security and water quality are, however, threatened by such increased phosphorus consumption, because the world's main source, phosphate rock, is an increasingly scarce resource. At the same time, losses of phosphorus...
This study investigated the effectiveness of bioretention as a stormwater management practice using repetitive bioretention columns for phosphorus removal. Bioretention media, with a higher short-term phosphorus sorption capacity, retained more phosphorus from infiltrating runoff after 3 mg/L phosphorus loading. A surface mulch layer prevented clogging after repetitive total suspended solids in...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید