نتایج جستجو برای: magnesium catalyst

تعداد نتایج: 81738  

Journal: :Journal of animal science 1976
W A House H F Mayland

A metabolism trial was conducted to assess some effects of magnesium alloy rumen bullets and magnesium sulfate on magnesium and calcium utilization in wether lambs fed a basal, semipurified diet (800 g/day) that contained .08% magnesium and .42% calcium. Four sheep were assigned randomly to each of four treatments: basal diet only (BD); basal diet plus two commercial magnesium bullets per anima...

Journal: :Magnesium research 2010
Forrest H Nielsen LuAnn K Johnson Huawei Zeng

Low magnesium status has been associated with numerous conditions characterized as having a chronic inflammatory stress component. Some animal findings indicate that a moderate magnesium deficiency, similar to which apparently commonly occurs in humans, may enhance inflammatory or oxidative stress induced by other factors, including disrupted sleep/sleep deprivation. Thus, an experiment was per...

Journal: :Frontiers in bioscience : a journal and virtual library 2000
G A Quamme C de Rouffignac

Magnesium is the fourth most abundant cation in the body and the second most common cation in the intracellular fluid. It is the kidney that provides the most sensitive control for magnesium balance. About a 80% of the total serum magnesium is ultrafilterable through the glomerular membrane. In all of the mammalian species studied to date, the proximal tubule of the adult animal reabsorbs only ...

Journal: :Journal of the Medical Association of Thailand = Chotmaihet thangphaet 2004
Pote Sriboonlue Sudjai Jaipakdee Dusit Jirakulsomchok Eimorn Mairiang Piyaratana Tosukhowong Vitoon Prasongwatana Sompong Savok

Low potassium and magnesium status and decreased Na, K-pump activity is an endemic condition among rural Northeast Thais. The authors examined the effect of supplementing potassium and magnesium on erythrocyte potassium, sodium and magnesium content and on Na, K-pump activity. Rural Northeast Thai renal stone patients (62) were recruited, divided into four groups and supplemented for one month ...

Journal: :Nutrition 2003
Forrest H Nielsen David B Milne

OBJECTIVE A study with human volunteers was conducted to ascertain whether a low intake of copper (Cu) would exacerbate the response to a deficient intake of magnesium (Mg). METHODS Nineteen postmenopausal women, age 47 to 78 y, completed a metabolic unit study as designed. For 162 d, nine women were fed a diet containing 1.0 mg of Cu/2000 kcal and 10 women were fed 3.0 mg of Cu/2000 kcal. Di...

2016
Andrea Rosanoff Qi Dai Sue A Shapses

Although much is known about magnesium, its interactions with calcium and vitamin D are less well studied. Magnesium intake is low in populations who consume modern processed-food diets. Low magnesium intake is associated with chronic diseases of global concern [e.g., cardiovascular disease (CVD), type 2 diabetes, metabolic syndrome, and skeletal disorders], as is low vitamin D status. No simpl...

Journal: :Catalysts 2023

The chemical transformation of carbon dioxide (CO2) not only reduces the amount emitted into Earth’s atmosphere by humans, but also produces compounds that can be used as precursors for and fuel production. Herein, a selective catalytic conversion to methanol is achieved bifunctional molybdenum disulfide catalyst (MoS2) with magnesium oxide nickel potassium promoters. Molybdenum prepared superc...

Journal: :Applied Surface Science 2021

This work reports the improved catalytic activity of nickel catalysts supported on nanocrystalline magnesium oxide prepared by a sol–gel method, using Pluronic P123 as structure-directing agent for pore formation. The presence also provided reduction crystallite size from 54 to 18 nm, well attainment small metallic particles. In situ X-ray diffraction was used assess structural evolution materi...

Journal: :Hemijska Industrija 2023

Possibilities of using waste plum stones in biodiesel production were investigated. The kernels used as a source to obtain oil by the Soxhlet extraction method, while whole stones, stone shells that remained after crashing, and kernel cake extraction, burned off ashes. collected ashes characterized elemental composition, porosity, base strength tested for catalytic activity transesterification ...

2016

Whereas in the general population magnesium deficits are most often thought to result mainly in calf cramps (which are generally not considered to be life threatening), it is less well known that a magnesium deficit induced by a magnesium-deficient diet in humans resulted in severe cardiac arrhythmias [5] . Other studies as, for example, an epidemiological study in Germany showed that low serum...

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