نتایج جستجو برای: mg2 cations and hco3

تعداد نتایج: 16830807  

Journal: :Physiological genomics 2005
Angela Goytain Gary A Quamme

We have begun to identify and characterize genes that are differentially expressed with low magnesium. One of these sequences conformed to the ancient conserved domain protein, ACDP2. Real-time RT-PCR of mRNA isolated from distal epithelial cells cultured in low-magnesium media relative to normal media and in kidney cortex of mice maintained on low-magnesium diets compared with those animals co...

Journal: :Journal of bacteriology 1998
T Murray D L Popham P Setlow

Bacillus subtilis strains lacking penicillin-binding protein 1 (PBP1), encoded by ponA, required greater amounts of Mg2+ or Ca2+ for vegetative growth or spore outgrowth than the wild-type strain and strains lacking other high-molecular-weight (HMW) PBPs. Growth of ponA cells in a medium low in Mg2+ also resulted in greatly increased cell bending compared to wild-type cells or cells lacking oth...

Journal: :Water 2021

Groundwater is a critical water supply for safe drinking water, agriculture, and industry worldwide. In the Khanewal district of Punjab, Pakistan, groundwater has severely deteriorated during last few decades due to environmental changes anthropogenic activities. Therefore, 68 samples were collected analyzed their main ions trace elements investigate suitability sources agricultural purposes. P...

Journal: :The Biochemical journal 1989
R Lahti R Hannukainen H Lönnberg

We have shown a dual role for Mg2+ in the hydrolysis of PPi catalysed by inorganic pyrophosphatase (PPase; EC 3.6.1.1) of Streptococcus faecalis; Mg2+ is necessary for the formation of the substrates, Mg1PPi2- and Mg2PPi0, and it also acts as an allosteric activator [Lahti + Jokinen (1985) Biochemistry 24, 3526-3530]. No activity can be observed with S. faecalis PPase in the absence of bivalent...

Journal: :Tarim Bilimleri Dergisi-journal of Agricultural Sciences 2021

In this study, a detailed hydrochemical evaluation has been made to determine the chemical processes of spring waters and their suitability for irrigation. The study area consists drainage basin Gökpınar dam fertile soils irrigable agriculture. During period August 2017 October 2018, regular samples were collected monthly from 10 140 in total subjected analysis. For purpose, 11 parameters such ...

Journal: :Geocarto International 2023

The majority of people living on earth rely groundwater as their primary supply water for daily needs. However, human activities continuously threaten this natural resource. In an attempt to unravel the extent impact human-related physicochemical characteristics in Nnewi and Awka urban clusters (Nigeria), several techniques were integrated study. Groundwater samples warm acidic nature. Concentr...

Journal: : 2021

The article presents the results of studies hydrochemical composition five urban lakes Murmansk. It was found that chemical water studied is significantly different from northeastern part Murmansk region Barents Sea catchment, which taken as background. pH values have increased in comparison with background values, well mineralization, content major ions, nutrients, and heavy metals. An increas...

Journal: :International Journal of Environmental Analytical Chemistry 2022

The Bundelkhand region of Central India has been facing increasing severity droughts, water-level depletion and deterioration in water quality. In this perspective, an attempt made for a qualitative evaluation surface groundwater resources belonging to the rural environment understand contaminant’s source probable human health risk due intake available water. samples collected from were analyse...

Journal: :Polish journal of pharmacology 2003
Tufan Mert Yasemin Gunes Mustafa Guven Ismail Gunay Dilek Ozcengiz

Divalent cations, such as calcium and magnesium, are constantly present in extracellular compartment of most organisms. Modification of extracellular concentrations of divalent ions causes changes in physiologic functions, such as excitability and conduction of the nerves. The present study was designed to investigate and compare the effects of calcium and magnesium on nerve conduction and lido...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2003
Bijay S Jaiswal Marco Conti

In mammals, Ca2+ and HCO3- ions play a critical role in the regulation of sperm function, most likely by regulation of cAMP levels. Mammalian germ cells contain a soluble adenylyl cyclase (sAC) with properties distinct from the well characterized membrane-bound enzymes Here we investigated whether the cyclase expressed in mature spermatozoa has the properties of sAC and whether it is regulated ...

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