Danau Sebedang merupakan danau alami yang terletak di Kecamatan Sebawi Kabupaten Sambas. Fungsi utama yaitu sebagai sumber air baku pengolahan bersih dan objek wisata. Adanya proses alam aktivitas antropogenik disekitar dapat menyumbang masukan berupa bahan organik anorganik ke ekosistem danau. Salah satu dampak mungkin terjadi adalah terjadinya pengayaan nutrien pada perairan Penelitian ini be...

A study was carried out to investigate nitrogen metabolism in response to cecal ligation and colostomy in chickens. We used colostomized plus ceca-ligated chickens fed a low protein diet or a low protein diet supplemented with urea. When both types of diets were fed, nitrogen balance and utilization tended to increase by cecal ligation while total nitrogen excretion tended to decrease. Colostom...

BACKGROUND Although there are several published estimates of the endogenous amino acid composition of ileal digesta in humans, to our knowledge, there are no systematic studies of ileal digesta endogenous proteins. OBJECTIVES We determined the nature and composition of endogenous nitrogen-containing substances lost from the upper digestive tract of humans. DESIGN Digesta were collected from...

Introduction. The study aims to develop and test a comprehensive calculation methodology in case of pilot pig complexes verify reliability estimates. methods are required for reliable tracking the nutrients flow at farm level adjusting application doses resulting solid liquid organic fertilizers with due account crop rotation place, agrochemical analysis soils, specific crops obtain target yiel...

this study evaluates the influence of yanã½klar creek on the water quality of fethiye gulf. accordingly, this study demonstrates (i) change in the water quality of fethiye gulf from 2006 to 2007; (ii) the water quality classification of the yanã½klar creek feeding fethiye gulf; and (iii) how land-based fish farm influences yanã½klar creek water quality in a fethiye-gã¶cek specially protected ar...

dissolved organic nitrogen (don) is an important constituent of dissolved organic matter (dom). it has a considerable effect on total dissolved soil nitrogen and it is very important as a nitrogen source of many aquatic and terrestrial ecosystems. dissolved inorganic nitrogen, which is another form of total soil dissolved nitrogen, includes no3, no2 and nh4, which is very important for plant nu...

Temporal changes in nitrogen concentrations and stream discharge, as well as sediment and nitrogen losses from erosion plots with different land uses, were studied in an agricultural watershed in the Taihu Lake area in eastern China. The highest overland runoff loads and nitrogen losses were measured under the upland at a convergent footslope. Much higher runoff, sediment and nitrogen losses we...