Results 21 to 30 of about 236,951 (253)

Thermodynamic Stability and Dissolution of Calcium Fluoride of Phosphogypsum Solidified in Cement-Based Cementing Materials in Bicarbonate Solution

open access: yesMedžiagotyra, 2023
Cement-based cementitious materials present an alkaline environment and mainly exist in the form of Ca(OH)2. Phosphogypsum, as a retarder of cementitious materials, is often added to cement instead of gypsum, and the fluorine by-product of phosphogypsum ...
Jianhui FAN, Xuebing WANG, Shengbo GUO
doaj   +1 more source

Metabolic acidosis

open access: yesJournal of Pediatric Critical Care, 2020
Acid–base disturbances are common occurrence in acute care setting, their rapid assessment and analysis are important, and pH of 6.8–7.8 is compatible with life. The definition of acid and base is different for biochemist, physiologist, cook, and others.
Kundan Mittal, H K Aggarwal
doaj   +1 more source

pH sensing via bicarbonate-regulated ‘soluble’ adenylyl cyclase (sAC)

open access: yesFrontiers in Physiology, 2013
Soluble adenylyl cyclase (sAC) is a source of the second messenger cyclic adenosine 3',5' monophosphate (cAMP). sAC is directly regulated by bicarbonate (HCO3-) ions. In living cells, HCO3- ions are in nearly instantaneous equilibrium with carbon
Nawreen eRahman   +2 more
doaj   +1 more source

CFTR Protein: Not Just a Chloride Channel?

open access: yesCells, 2021
Cystic fibrosis (CF) is a recessive genetic disease caused by mutations in a gene encoding a protein called Cystic Fibrosis Transmembrane Conductance Regulator (CFTR).
Laurence S. Hanssens   +2 more
doaj   +1 more source

Diel variation in gene expression of the CO2-concentrating mechanism during a harmful cyanobacterial bloom

open access: yesFrontiers in Microbiology, 2016
Dense phytoplankton blooms in eutrophic waters often experience large daily fluctuations in environmental conditions. We investigated how this diel variation affects in situ gene expression of the CO2-concentrating mechanism (CCM) and other selected ...
Giovanni eSandrini   +6 more
doaj   +1 more source

Exogenous Albumin Is Crucial for Pig Sperm to Elicit In Vitro Capacitation Whereas Bicarbonate Only Modulates Its Efficiency

open access: yesBiology, 2021
This work sought to address whether the presence of exogenous bicarbonate is required for pig sperm to elicit in vitro capacitation and further progesterone-induced acrosome exocytosis. For this purpose, sperm were either incubated in a standard in vitro
Bruna Resende Chaves   +7 more
doaj   +1 more source

Renal bicarbonate reabsorption during bicarbonate loading

open access: yesKidney International, 1980
To examine bicarbonate reabsorption at different GFR's, we varied the renal perfusion pressure in anesthetized dogs after inhibiting autoregulation by expanding extracellular volume and infusing ethacrynic acid. At a plasma bicarbonate concentration (PHCO3) of 28 +/- 1 mM, bicarbonate reabsorption varied in proportion to GFR (glomerulotubular balance).
Monclair, Tom   +2 more
openaire   +2 more sources

QUALITY EVALUATION OF SOME BOTTLED WATERS AVAILABLE IN IRAQI MARKET

open access: yesJournal of Engineering and Sustainable Development, 2021
This study was intended to evaluate the quality of some bottled waters available in Iraqi market, by testing their physical, chemical and biological characteristics.
Mohammed A. Rashid, Nagam O. Kariem
doaj   +1 more source

Coupled nitrogen transformation and carbon sink in the karst aquatic system: a review

open access: yesBlue-Green Systems, 2021
Carbonate bedrock regions represent that 14% of Earth's continental surface and carbon (C) sink in karst water plays an important role in the global C cycle due to the CO2 consumption during carbonate mineral weathering.
Wenwen Chen   +7 more
doaj   +1 more source

Outcomes and predictors of early emergency department discharge among children with acute gastroenteritis and moderate dehydration

open access: yesInternational Journal of Pediatrics & Adolescent Medicine, 2022
Background: Gastroenteritis is one of the most common diseases that affects children and remains a leading cause of morbidity and mortality around the world.
Mohammed Khalaf Almutairi   +5 more
doaj   +1 more source

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