نتایج جستجو برای: chemical phosphorus

تعداد نتایج: 415077  

2015
Francis L. Fluharty

Phosphorus has been called the "master mineral" because it is involved in most metabolic pathways, is a key component of Adenosine 5'-triphosphate (ATP) which transports chemical energy within cells for energy metabolism, and it is a component of deoxyribonucleic acid (DNA). “Next to calcium, phosphorus is the most abundant mineral in the body. Approximately 85% of phosphorus in the body can be...

Journal: :Science 2015
B A S Van Mooy A Krupke S T Dyhrman H F Fredricks K R Frischkorn J E Ossolinski D J Repeta M Rouco J D Seewald S P Sylva

Phosphorus in the +5 oxidation state (i.e., phosphate) is the most abundant form of phosphorus in the global ocean. An enigmatic pool of dissolved phosphonate molecules, with phosphorus in the +3 oxidation state, is also ubiquitous; however, cycling of phosphorus between oxidation states has remained poorly constrained. Using simple incubation and chromatography approaches, we measured the rate...

Journal: :مدیریت اراضی 0
فرهاد رجالی عضو هیات علمی موسسه تحقیقات خاک و آب هادی اسدی رحمانی عضو هیات علمی موسسه تحقیقات خاک و آب. کاظم خاوازی عضو هیات علمی موسسه تحقیقات خاک و آب احمد اصغرزاده عضو هیات علمی موسسه تحقیقات خاک و آب. اشرف اسمعیلی زاد کارشناس ارشد موسسه تحقیقات خاک و آب

carbonatic origin of most arable land in the country, caused to decrease phosphatic fertilizer use efficiency and because of this phenomenon, farmers annually add a large amount of these chemical compounds to their field to get proper results. international shortage and increasing prices create some problems for importing phosphorus fertilizers to the country. on the other hand using more and m...

2015
Yun-Kun Wang Xin-Rong Pan Yi-Kun Geng Guo-Ping Sheng

Recovering nutrients, especially phosphate resource, from wastewater have attracted increasing interest recently. Herein, an intermittently aerated membrane bioreactor (MBR) with a mesh filter was developed for simultaneous chemical oxygen demand (COD), total nitrogen (TN) and phosphorous removal, followed by phosphorus recovery from the phosphorus-rich sludge. This integrated system showed enh...

In order to investigate the effects of solitary and combined application of chemical and biological fertilizers on the yield and yield components of quinoa plant, a factorial experiment was conducted based on randomized complete block design with three replications in Dastgerd (Borkhar), Isfahan, central Iran, during the 2017-2018 growing season. Experimental factors included four levels of Che...

Journal: :Iranian journal of kidney diseases 2010
Nazanin Noori John J Sims Joel D Kopple Anuja Shah Sara Colman Christian S Shinaberger Rachelle Bross Rajnish Mehrotra Csaba P Kovesdy Kamyar Kalantar-Zadeh

Dietary phosphorus control is often a main strategy in the management of patients with chronic kidney disease. Dietary protein is a major source of phosphorus intake. Recent data indicate that imposed dietary phosphorus restriction may compromise the need for adequate protein intake, leading to protein-energy wasting and possibly to increased mortality. The two main sources of dietary phosphoru...

Journal: :Acta biochimica Polonica 2013
Katarzyna Gorazda Zbigniew Wzorek Barbara Tarko Anna K Nowak Joanna Kulczycka Anna Henclik

The rebuilding of the phosphorus cycle can be performed with the use of both biotechnology and chemical technology. This paper presents a review of the phosphorus cycle and the different approaches that can be taken to the recovery of phosphorus from phosphate-rich waste. Critical issues in the phosphorus cycle are also discussed. Methods for the recovery of phosphorus form sewage sludge ash ar...

Journal: :Proceedings of the Institution of Civil Engineers - Water Management 2010

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان زنجان - دانشگاه پیام نور مرکز ابهر - دانشکده علوم 1387

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