نتایج جستجو برای: nitrogen dynamics

تعداد نتایج: 554220  

2015
Lijun Hou Yanling Zheng Min Liu Xiaofei Li Xianbiao Lin Guoyu Yin Juan Gao Fengyu Deng Fei Chen Xiaofen Jiang

Over the past several decades, human activities have caused substantial enrichment of reactive nitrogen in China's coastal wetlands. Although anaerobic ammonium oxidation (anammox), the process of oxidizing ammonium into dinitrogen gas through the reduction of nitrite, is identified as an important process for removing reactive nitrogen, little is known about the dynamics of anammox and its con...

Journal: :Journal American Society of Mining and Reclamation 1990

Journal: :Science 2011
H J Wörner J B Bertrand B Fabre J Higuet H Ruf A Dubrouil S Patchkovskii M Spanner Y Mairesse V Blanchet E Mével E Constant P B Corkum D M Villeneuve

Conical intersections play a crucial role in the chemistry of most polyatomic molecules, ranging from the simplest bimolecular reactions to the photostability of DNA. The real-time study of the associated electronic dynamics poses a major challenge to the latest techniques of ultrafast measurement. We show that high-harmonic spectroscopy reveals oscillations in the electronic character that occ...

2013
Irakli Loladze

Every organism is composed of multiple chemical elements such as carbon, nitrogen and phosphorus. The relative proportions of such elements vary within and among species. How such facts affect organismal, population and ecosystem dynamics is the focus of ecological stoichiometry, which to date has been largely ignored by population dynamics theory. In this dissertation, stoichiometric principle...

Journal: :environmental health engineering and management 0
neamat jaafarzadeh haghighi fard environmental technologies research center, ahvaz jundishapur university of medical sciences, ahvaz, iran behnam moradi department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, iran mokhtar abbasi department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, iran rahman alivar babadi department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, iran hossein bahrani department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, iran azadeh mirzaie department of environmental health engineering, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, iran

background: composting as a waste management technology is becoming more widespread. the purpose of this study was to assess the feasibility and to find the most effective composting process for the ratio of green waste, digested and dewatered sludge from chonibieh wastewater treatment plant in the west region of ahvaz. methods: the composting time was 23 days and the evaluated parameters in th...

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