background : in spite of clinically useful photon and electron beams, high energy linacs produce secondary particles such as neutrons (photo-neutron production). neutrons have important roles during treatment with high energy photons in terms of protection and dose escalation. in this project, neutron dose equivalent of 18 mv varian accelerators is calculated by tld600 and tld700. materials and...

An assessment of the nitrogen fertilization efficiency should not only include quantitativeand qualitative yield changes, but also an analysis of formation some indicators such as: Nharvest index (NHI), N use efficiency (NUE), N utilization efficiency (NUtE), N agronomicefficiency (NAE), N physiological efficiency (NPE) and N apparent recovery fraction (NRF).The objective of the study was the e...

Grazing can cause changes in soil carbon (C) level. This study aimed to elucidate the response of soil labile organic carbon (SLOC) under four different grazing intensities: non grazing (NG), 0 sheep·ha(-1); light grazing (LG), 0.91 sheep·ha(-1); moderate grazing (MG), 1.82 sheep·ha(-1), and heavy grazing (HG), 2.73 sheep·ha(-1). Results showed that there was no significant difference in total ...

Agricultural sector acts as a major consumer of water which accounts for 70 percent global freshwater use. Water scarcity an imminent threat to agriculture, there is need use those irrigation and management practices that could overcome this overwhelming situation scarcity. Lab incubation study was designed evaluate the effect different moisture levels (50%, 60%, 70%, 80%, 90%, 100% FC) on nitr...

Very little is known about the microbiology of graves. We have taken the opportunity to investigate this subject by taking advantage of the unusual opportunity afforded by the experimental burial of pigs in a forensic experiment. Selected microbial characteristics of soils from the 0–15 and 15–30 cm depths of the graves of three pigs and of control soils have been determined 430 days after buri...

Soil carbon (C), nitrogen (N), and phosphorus (P) are three important elements. The study of stoichiometric relationships soil C, N, P in tropical forests on Hainan Island, China could improve our understanding nutrient cycling provide valuable information for forest management. samples were collected at five different depths from 0 to 100 cm sites among four types total concentrations measured...

Improved mechanistic understanding of soil methane (CH4) exchange responses to shifts in moisture and temperature forest ecosystems is pivotal reducing uncertainty estimates the soil-atmospheric CH4 budget under climate change. We investigated mechanism behind effects on fluxes laboratory conditions. Soils from Huai River Basin China, an area that experiences frequent hydrological shifts, were ...

The study was carried out to investigate the effect of tree age soil physical and chemical characteristics mango orchard. Effect 4 different ages (<10, 10 - 20, 21 – 30, over 30 years) on physic-chemical properties farmers’ Mango field in Dong Thap province. research handled from June November 2021. Soil samples at two depths (0 20 50 cm) were collected basin subjected laboratory analysis De...

Abstract Groundwater is a significant source of plant water use since groundwater consumption plants reduces the volume surface irrigation water. In this study, table effect on hard red spring wheat ( Triticum aestivum L.) growth and yield parameters were investigated using lysimeter technique in controlled environment. Three different depths including 30, 60, 90 cm control treatment with teste...

A field experiment was conducted to evaluate the performance of locally developed combine equipment used for several agricultural operations at once in a silt clay loam soil texture. Three factors were used. The first is forward speed machinery unit, with three speeds: 2.98, 4.37, and 6.18 km h-1, second plowing depths, depths subsurface irrigation pipes 10/20, 15/25, 20/30 cm, third distances ...