نتایج جستجو برای: organic system

تعداد نتایج: 2407474  

Journal: :iranian journal of public health 0
jalil jafari dept. of environmental health engineering, school of public health, tehran university of medical sciences, tehran, iran. alireza mesdaghinia dept. of environmental health engineering, school of public health, tehran university of medical sciences, tehran, iran. ramin nabizadeh dept. of environmental health engineering, school of public health, tehran university of medical sciences, tehran, iran. mehrdad farrokhi dept. of environmental health, school of public health, guilan university of medical sciences, rasht, iran. amir hossein mahvi dept. of environmental health engineering, school of public health, tehran university of medical sciences, tehran, iran ; center for solid waste research, institute for environmental research, tehran university of medical sciences, tehran, iran.

anaerobic treatment methods are more suitable for the treatment of concentrated wastewater streams, offer lower operating costs, the production of usable biogas product. the aim of this study was to investigate the performance of an anaerobic fluidized bed reactor (afbr)-aerobic moving bed bio reactor (mbbr) in series arrangement to treat currant wastewater.the bed materials of afbr were cylind...

Regarding to the increase of cost and consumption of the nonrenewable energies such as natural gas and electricity, using renewable energies such as solar energy reduces the consumption of nonrenewable energies. In this research, at first, a regenerative organic Rankine cycle with flat plate solar collector as energy source is simulated and the effects of different parameters such as turbine in...

The use of aqueous mixed micellar system consisting of sodium dodecyl sulfate (SDS) and polyoxyethylene (23) dodecanol (Brij-35) as the mobile phase in reversed-phase liquid chromatography was studied. A group of chlorophenols was used as the test mixture. Adding organic modifier to the system showed that the use of low concentrations of organic additives improves efficiency in SDS/Brij-35 mixe...

A.O. Akinwumi, J.A. Akinlade O.O. Ojebiyi O.S. Adedeji S.A. Ameen T.K. Ogunsina

This paper considers the potential problems that may militate against the adoption of organic poultry production in Nigeria. Factors identified include: higher risk of diseases like coccidiosis and Newcastle disease, disease prevention and control / herd health management, disease containment in times of outbreak, land acquisition (land tenure system), market economies / cost-benefit ratio, pas...

Journal: :Analytical chemistry 2002
Mariana Surmeian Maxim N Slyadnev Hideaki Hisamoto Akihide Hibara Kenji Uchiyama Takehiko Kitamori

A stable three-layer flow system, water/organic solvent/water, has been successfully applied for the first time in a microchannel to get rapid transport through an organic liquid membrane. In the continuous laminar flow region, the analyte (methyl red) was rapidly extracted across the microchannel from the donor to the acceptor phase through the organic solvent phase (cyclohexane). Thermal lens...

2010
Masakazu Komatsuzaki

Organic farming provides many benefits in Indonesia: it can improve soil quality, food quality and soil carbon sequestration. This study was designed to compare soil carbon sequestration levels between conventional and organic rice farming fields in west Java, Indonesia. The results from soil analysis indicate that organic farming leads to soil with significantly higher soil carbon storage capa...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده فنی مهندسی 1389

the poor orientation of the restaurants toward the information technology has yet many unsolved issues in regards to the customers. one of these problems which lead the appeal list of later, and have a negative impact on the prestige of the restaurant is the case when the later does not respond on time to the customers’ needs, and which causes their dissatisfaction. this issue is really sensiti...

Journal: :بوم شناسی کشاورزی 0
مریم السادات حسینی غلامحسین حق نیا امیر لکزیان حجت امامی

.soil microorganisms are important agents in nutrient cycling and energy flow. they are extremely sensitive to environmental changes. soil microbial biomass has been proposed as an index of soil stress and disturbance. the objective of this study was to determine the effects of barley (hordeum vulgare l.) residue amounts, burning, nitrogen fertilizer levels and tillage management on organic car...

Journal: :iranian journal of allergy, asthma and immunology 0
faegheh alizadeh najjarbashi mofid children hospital, school of medicine, shahid beheshti university of medical sciences, tehran, iran mehrnaz mesdaghi department of immunology, mofid children hospital, school of medicine, shahid beheshti university of medical sciences, tehran, iran and pediatric infections research center, mofid children hospital, shahid beheshti university of medical sciences, tehran, iran mohammadreza alaei department of endocrinology and metabolism, mofid children hospital, school of medicine, shahid beheshti university of medical sciences, tehran, iran marjan shakiba department of endocrinology and metabolism, mofid children hospital, school of medicine, shahid beheshti university of medical sciences, tehran, iran aliakbar jami department of pediatric cardiology, school of medicine, army university, tehran, iran farah ghadimi department of immunology, mofid children hospital, school of medicine, shahid beheshti university of medical sciences, tehran, iran

patients with organic acidemia are prone to different infections, which lead to acidosis episodes. some studies have evaluated the status of immune system in acidotic phase in these patients, but to the best of our knowledge no study has evaluated the immune system in non-acidotic phase of the disease. in this study, thirty-one patients with organic acidemia were enrolled. for evaluation of hum...

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