نتایج جستجو برای: bicarbonates

تعداد نتایج: 5848  

Journal: :Inorganic chemistry 2002
Laura Gagliardi Björn O Roos

The results of a study on the ground-state of monocarbonate, bicarbonate, and tricarbonate complexes of neptunyl using multiconfigurational second-order perturbation theory (CASSCF/CASPT2) are presented. The equilibrium geometries of the complexes corresponding to neptunium in the formal oxidation state (V) have been fully optimized at the CASPT2 level of theory in the presence of an aqueous en...

Journal: :Gut 1971
A N Fawcett C A Newman

Prolonged near maximal pancreatic secretion in conscious dogs has been found to result in a metabolic acidosis. This is mild and is accompanied by respiratory and other forms of compensation. Measurements of blood bicarbonate or base-excess changes cannot be used to estimate pancreatic bicarbonate output. The acidosis caused by pancreatic secretion cannot explain the changes in bicarbonate conc...

Journal: :Folia medica Neerlandica 1970
A Struyvenberg

Because maintaining a normal body pH is essential to the efficient functioning of many physiologic processes, the body has a number of mechanisms that prevent pH fluctuations. Some of these prevent minute-to-minute pH fluctuations over the course of the day, whereas others maintain pH balance from day to day. The kidney plays a key role in both processes. The renal process of bicarbonate reclam...

Journal: :The Proceedings of the Nutrition Society 1988
M Elia N Fuller P Murgatroyd

Two tracer methods have been used to assess energy expenditure in animals and humans: the doubly-labelled-water method (for animals Lifson et af . 1955; for humans Prentice, 1988; Coward, 1988) and the labelled bicarbonate method (for humans present paper; for animals Corbett er al. 1971). Whereas the doubly-labelled-water technique attempts to provide information about the energy expenditure o...

Journal: :Water 2021

This study focused on the monitoring and assessment of aquatic ecosystem functioning based abiotic biotic features Lake Nasser in post-flood pre-flood periods as last ones before water storing behind Grand Ethiopian Renaissance Dam. The physicochemical parameters, distribution structure communities, including bacteria, phytoplankton, zooplankton, macrophytes, epiphytes fish were analyzed at 15 ...

Journal: :Separation and Purification Technology 2021

This work reports the solvothermal synthesis of a titanium-based metal organic framework (NH2-MIL-125(Ti)) and further deposition palladium, platinum silver nanoparticles on its framework, with aim to obtain visible light-driven photocatalysts. The structure NH2-MIL-125 was not affected by incorporation nanoparticles, while textural properties changed depending used. All M/NH2-MIL-125 (M = Pd, ...

Journal: :Water 2023

In this study, we analyzed the hydrogeochemistry of 350 underground wells in northern region state Minas Gerais, Brazil, for water-chemical parameters that may contribute to chemical clogging emitters drip irrigation systems. Risk class maps were generated each parameter, and area was classified based on water characteristics, considering degree water-use restriction micro-irrigation (i.e., no,...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی گرگان - دانشکده کشاورزی 1390

آهن یک عنصر کم مصرف ضروری برای گیاهان است. کلروز آهن یک مشکل مهم مزارع و باغات در خاک های آهکی که بیش از 60 درصد خاک های ایران را شامل می شود. هدف از این تحقیق، بررسی عوامل موثر بر بروز کمبود آهن و روش های مقابله با آن در گیاه سویا است. به این منظور تعداد 12 نمونه خاک های استان گلستان، از عمق 30-0 سانتی متری به صورت مرکب برداشته شد. آزمایشات پایه برای تعیین خصوصیات فیزیکی و شیمیایی خاک انجام و ...

Journal: :International journal of geography, geology and environment 2022

There are four major irrigation systems and two minor/ micro available in the state for irrigating crops. Gurgaon canal flowing through Gurgaon, Rewari Palwal districts NCR has been chosen analysis. takes delivery of millions industrial domestic waste matters. The objective study is to characterize water quality suitability using geospatial techniques generate interpolation maps individual para...

Journal: :Water 2021

Two water effluents that drain from the abandoned coal mine of São Pedro da Cova (NW Portugal) were characterized in terms their physic-chemical properties and suitability for irrigation purposes. Samples also collected a local surface stream, upstream downstream drainage points, used by farmers. Water samples analyzed major minor ions trace element concentrations. Sampling campaigns started 20...

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