Revealing the binding properties of calcium ion (Ca2+) and magnesium (Mg2+) to terrestrial chromophoric dissolved organic matter (CDOM) facilities understanding effect natural water components on photophysics matter. Steady-state time-resolved fluorescence spectrometry, dynamic light scattering were applied investigate quenching process CDOM by Ca2+ Mg2+. Due a remarkable decrease steady-state ...

We used microelectrodes to determine whether the K/HCO3 cotransporter tentatively identified in the accompanying paper (Hogan, E. M., M. A. Cohen, and W. F. Boron. 1995. Journal of General Physiology. 106:821-844) can mediate an increase in the intracellular pH (pHi) of squid giant axons. An 80-min period of internal dialysis increased pHi to 7.7, 8.0, or 8.3; the dialysis fluid was free of K+,...

The hydrogeochemical evolution of Bosten Lake has an important impact on the lake’s ecology and water environment. Kriging interpolation, principal component analysis Piper Gibbs charts were used to analyze hydrochemical characteristics genesis in summer autumn. following are main conclusions: (1) In autumn, hydrochemistry lake follows order SO42− > Cl− HCO3− Na+ Mg2+ Ca2+ K+. (2) concentrat...

Polymyxin B interacts with divalent cations by displacing cations from their binding sites in the lipopolysaccharide (LPS) molecules. It leads to the disorganization of the outer membrane component of the Gram negative bacteria, which releases LPS component from bacterial surface causing severe membrane leakage and finally cell death. In this paper, the reversible activity of PMB was investigat...

We assessed the physico-chemical status of twelve surface water samples from the Birjand flood plain (east of Iran) during fall 2010. The sampling points were selected on the basis of their importance. The physico-chemical parameters such as pH, temperature (T), electrical conductivity (EC), total dissolved solids (TDS), total hardness (TH), calcium (Ca2+), magnesium (Mg2+ ), sodium (Na+), pota...

Public health is at threat due to chemical contaminants in drinking water which may have direct concerns. The suitability of for primarily governed by the mineral constituents present water. study was carried out evaluate quality and associated risks Gandaki River Basin (GRB) Central Himalaya, Nepal considering hydrochemical variables such as total dissolved solids (TDS); major cations (Ca2+, M...

In order to study hydrogeochemical effect in the process of seawater intrusion (SI), and provide scientific basis for comprehensive management water resources ecological restoration, Longkou city Shandong province China was taken as an example this study. Based on observed data, traditional hydrogeochemistry methods hydrochemistry analysis, correlation principal component reverse geochemical si...

Lithium, declared critical raw material by the European Union in 2020, is a competitor to hydrogen as alternative petroleum. Its use increasing while reserves are declining, boosting new sources, seawater desalination concentrates. In this work, computational study of most promising extractants, β-diketones and organophosphates combinations thereof, towards lithium presence metal ions found con...

Background: Reverse Osmosis (RO) is an increasingly common method of desalination. A full scale water desalination system by membrane technology (RO) evaluated in a southern city (Jask) in Iran. Methods: First, data collection on water supply and network were performed. Analysis on most of the water quality parameters (Turbidity, pH, EC, Cl-, Na+, Alkalinity, Ca, Na, K, No3, No2, Fe, Mg, Mn, NH...

Preservation of water quality, particularly in areas with inadequate water resources is considered as one of the principles of planning in integrated water management. In Kuhdasht, a region at the west of Iran, groundwater and spring water resources are the major contributors of drinking and irrigation water supply. The aim of this study was to determine the suitability and mapping of springs a...