نتایج جستجو برای: chemical phosphorus

تعداد نتایج: 415077  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد 1387

چکیده ندارد.

2015
Steven I. Safferman Younsuk Dong Jacqueline Thelen Lauren Costantini Leila Saber J. Richard Schorr Suvankar Sengupta Rao Revur

Dissolved, bioavailable phosphorus originating from onsite and municipal wastewater is being recognized as one of the contributors to eutrophication and, more recently, high profile cyanobacteria incidents. This has resulted in very low regulatory limits in some regions, well below 1 mg/L, which are very hard to economically and reliably reach with conventional biological and chemical treatment...

Journal: :Burns : journal of the International Society for Burn Injuries 2004
David J Barillo Leopoldo C Cancio Cleon W Goodwin

UNLABELLED Chemical burn injury meets the criteria of the American Burn Association for treatment at a specialized burn facility. Over a 51-year period, we have treated 276 patients with chemical burn injury including 146 white phosphorus injuries. In this study, we compare incidence, cause and outcome of chemical burn injury over time and review the management of white phosphorus injuries. M...

2012
Nan Chen Chuanping Feng Zhenya Zhang Ruopeng Liu Ya Gao Miao Li Norio Sugiura

A La(III)-loaded granular ceramic adsorbent, consisting mainly of different forms of metal oxide minerals, was developed for phosphorus removal from aqueous solution. Batch experiments were performed to investigate the effects of various experimental parameters, such as contact time (3–48 h), initial phosphorus concentration (5–25 mg/L), pH (2.0–12.0), temperature (20, 30 and 40 8C) and anions ...

Journal: :Journal of environmental sciences 2007
Ya-Yi Wang Mian-Li Pan Min Yan Yong-Zhen Peng Shu-Ying Wang

The characteristics of anaerobic phosphorus release and anoxic phosphorus uptake were investigated in sequencing batch reactors using denitrifying phosphorus removing bacteria (DPB) sludge. The lab-scale experiments were accomplished under conditions of various nitrite concentrations (5.5, 9.5, and 15 mg/L) and mixed liquor suspended solids (MLSS) (1844, 3231, and 6730 mg/L). The results obtain...

2016
Gabriela Velásquez Phuong-Thi Ngo Cornelia Rumpel Marcela Calabi-Floody Yonathan Redel Benjamin L. Turner Leo M. Condron María de la Luz Mora

a Center of Plant, Soil Interaction and Natural Resources Biotechnology, Scientific and Biotechnological Bioresource Nucleus (BIOREN-UFRO), Avenida Francisco Salazar 01145, Universidad de La Frontera, Temuco, Chile b Laboratoire Sol et Environnement (LSE), Université de Loraine, Vandoeurve les Nancy cedex, France c UMR Université Paris VI et XII-CNRS-INRA-IRD), Campus AgroParisTech, Thiverval-G...

Journal: :Angewandte Chemie 2004
Arno Pfitzner Michael F Bräu Josef Zweck Gunther Brunklaus Hellmut Eckert

Elemental phosphorus has been known for about 350 years. As a result of huge scientific interest, numerous textbooks are filled with information about this element, its different allotropes, and its compounds. [1] Like boron and carbon, the element features tremendous structural variability, resulting in great diversity of physical properties and chemical reactivity: White phosphorus, P4, forms...

2006
E. ERIKSSON

Nitrogen, phosphorus and sulphur are essential elements in all living matter and are found in varying proportions to carbon, depending on the chemical nature of the compounds in which they occur. A pattern for the circulation of these elements in nature developed when microorganisms, plants and animals appeared on earth. The pattern was set by the physical and chemical environment, by the chemi...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید