Background: Heavy metal pollution in farm soils is a grave concern in Taiwan. Previously, we found the incidence of oral cancer (OC) correlated positively with levels of nickel and arsenic in farm soils. Many OC patients have a second malignancy, among which esophageal cancer (EC) is the most common one in Taiwan. Objectives: We aimed to investigate whether these two cancers share some common r...

Modified natural zeolites in the Na-form (clinoptilolite tuff of Aydag and mordenite Chananab deposits Azerbaijan) were studied order to extract cations transition heavy metals water industrial liquid waste. The equilibrium kinetic characteristics sorption process under static dynamic conditions have been studied. Distribution isotherms exchange ions between Na forms with chloride (Ni2+, Co2+, ...

today, many of the subterranean and the threat of environmental pollution have been exposed tehran's why environmental studies and water quality monitoring subterranean as urban planning and management is an important issue. the purpose is of this research, monitoring water quality across the east tehran subterranean of environmental indicators. the research method to collect data primaril...

Swine wastewater is characterized by high organic matter content, solids, nitrogen (expressed as total ammonia and protein) and heavy metals. This work determines the methanogenic toxicity effect of free ammonia contained in swine wastewater comparing raw swine wastewater (RW) and the liquid fraction of swine wastewater (TW). The values of IC50 (50% of inhibition) obtained for methanogenic bact...

The effect of heavy metals on plasma membrane (PM) H(+)-ATPase (EC 3.6.3.14) activity in cucumber (Cucumis sativus) roots was studied. The aim of this work was to explain the mechanism of modification of the PM H(+)-ATPase activity in plants subjected to heavy metals. Plants were treated with 10 μM Cd or Cu for 6 d. After 3 d exposure to the heavy metals, some of the plants were transferred to ...

Mycorrhizal fungi are key mediators of soil-to-plant movement of mineral nutrients, including essential and non-essential metals. In soil conditions that facilitate mobilization of metal ions, potentially toxic metals can interfere with nitrogen metabolism in both plants and microorganisms. Less is known about possible relationships between nitrogen metabolism and responses to heavy metals. Aim...

background: groundwater resources in arid and semi arid regions are very important. groundwater is contaminated by agricultural, industrial and municipal activity which as a result reduces its quality. investigating of the chemical quality of the groundwater is emphasized to identify pollutant environmental impacts associated with incorrect waste disposal practice. this research investigated th...

water quality is a serious issue in tropical grasslands that must be addressed to ensure the continuity and sustainability of water resources. this study aimed to assess the stream water quality of tropical grassland under long-term moderate (2.7 animal unit ha-1 y-1 for 34 years) and short-term heavy (5 animal unit ha-1 y-1 for 2 years) grazing systems at catchment and farm scales in kuala lum...

Plant growth promoting rhizobacteria (PGPR) are known to influence plant growth by various direct or indirect mechanisms. In search of efficient PGPR strains with multiple activities, a total of 150 bacterial isolates belonging to Bacillus, Pseudomonas, Azotobacter and Rhizobium were isolated from different rhizospheric soil of chick pea in the vicinity of Allahabad. These test isolates were bi...

Natural and anthropogenic indulgence in the form of industrialization, urban sprawl, population increase deplete water resources that entails immediate consideration. So, contemplating this need for eco-rehabilitation, drinking quality predicted contemporary research surface groundwater proximity Precambrian rocks (Chenab Nagar, Punjab) revealed poor status. Physical parameters (EC, TDS, temper...