existence of acid humic in water resources is undesirable and causes carcinogenic component in disinfection process due to reaction with chlorine. due to their cost-effectiveness and higher physical resistance than activated carbon, natural zeloites are used for removing various pollutants. . in the present study, iranian natural zeolite modified with cetylpyridinium bromide (cpb) was investiga...

A field experiment was conducted in 2007 and 2008 on a slightly acidic alfisol. Poultry manure (PM) was applied at 0, 5 t ha(-1), 10 t ha(-1), 15 t ha(-1), and 20 t ha(-1) in combination with SSP at 0, 15 kg P ha(-1), 30 kg P ha(-1), 45 kg P ha(-1), and 60 kg P ha(-1), which was replicated three times. The pH and organic C were significantly increased by the application of PM alone while availa...

recently, increase in crop production depends on better seedling establishment, emergence rate and uniformity. thus, an experiment was carried out in a randomized complete block design with 8 fertilizer treatments and 4 replications in 2008 at sari agricultural sciences and natural resources university. the aim of this research was to evaluate effect of vermicompost (vc) on bush bean seedling e...

The effect of zeolite and biohumus on the biological activity irrigated grass-gray soils under beans subtropical zone was studied. It determined that changes depending growth phase bean, applied rate. Based complex indicators (activity enzymes, number microorganisms, abundance carbon dioxide released from soil, intensity nitrification process, decomposition cellulose), bio-diagnostics meadow-gr...

Magnesium is potentially useful for orthopedic and cardiovascular applications. Magnesium and its alloys are light, biodegradable, biocompatible metals that have promising applications as biomaterials. However, the corrosion rate of this metal is so high that its degradation occurs before the end of the healing process. One of the ways to improve the corrosion rate is to compose it with ceramic...

Magnesium is potentially useful for orthopedic and cardiovascular applications. Magnesium and its alloys are light, biodegradable, biocompatible metals that have promising applications as biomaterials. However, the corrosion rate of this metal is so high that its degradation occurs before the end of the healing process. One of the ways to improve the corrosion rate is to compose it with ceramic...

the lack of herbicides for broadleaf weed control is one of the most important challenges of chickpea production in iran. field experiments were conducted in lorestan, kermanshah, east and west azerbaijan to evaluate weed control and chickpea response to application of some herbicides in 2006. there were four replications at each site and treatments were arranged in a randomized complete block ...