نتایج جستجو برای: bio solids

تعداد نتایج: 83061  

Journal: :caspian journal of environmental sciences 2006
m. f. baqual p. k. das

the co-inoculation of mulberry with phosphate solubilizing micro-organisms, nitrogen fixing bacteria and arbuscular mycorrhiza has influenced its macronutrient uptake through leaf. the data revealed that maximum nitrogen (484.12 kg /ha) , phosphorus (59.83 kg /ha) and potassium (244.61 kg/ha) uptake through leaf has taken place due to co-inoculation treatments as compared to the un inoculated t...

Journal: :مجله انسان، محیط زیست و ارتقاء سلامت 0
mohammad reza mehrasbi school of health ghasem mohammadi health center mehran mohammadian fazli school of health bahram hajikarim school of medical gholamali jafari school of health

background: bio aerosols include airborne micro-organisms such as bacteria, fungi, viruses, etc and their products. exposure to a bio aerosol is linked with a broad spectrum of health problems, including infectious diseases, acute toxic effects, allergies, and cancer. the aim of this study was to evaluate the quality and quantity of bio aerosols found in the air of different wards in valiasr ho...

2013
B. J. YOGESH A. MICHAEL

Land-filling option is drying out with rapid pile up of organic waste in urban areas; the problem can be circumvented with accelerated anaerobic decomposition which can also be a source of valuable bio-fuel. But many municipal anaerobic waste treatment systems fail due to the lack of adequate microbial inoculum and also hampered by the doubts on many aspects of its operation and stability. In t...

Journal: :EXCLI journal 2013
Ganiyat K Oloyede Martha S Oyelola

Bio-active compounds present in West Indian Wood Nettle Laportea aestuans (L.) Chew (Urticaceae), used in ethno medicine as antioxidant and antimicrobial were studied. The aim of this research work was to isolate and characterize the bio-active compounds in the n-hexane fraction of L. aestuans, determine the toxicity and subject it to in-vitro antimicrobial and free radical scavenging activitie...

2013
Trevor Treasure R. Gonzalez Richard Venditti H. Jameel Y. Pu Steve Kelley Jeffrey Prestemon

A process economic analysis of co-producing bioethanol and electricity (value prior to combustion) from mixed southern hardwood and southern yellow pine is presented. Bioethanol is produced by extracting carbohydrates from wood via autohydrolysis, membrane separation of byproducts, enzymatic hydrolysis of extracted oligomers and fermentation to ethanol. The residual solids after autohydrolysis ...

Journal: :journal of arthropod-borne diseases 0
naseh malekei-ravasan department of medical entomology and vector control, school of public health, tehran university of medical sciences, tehran, iran. abbas bahrami department of medical entomology and vector control, school of public health, tehran university of medical sciences, tehran, iran. mansoreh shayeghi department of medical entomology and vector control, school of public health, tehran university of medical sciences, tehran, iran. mohamad ali oshaghi department of medical entomology and vector control, school of public health, tehran university of medical sciences, tehran, iran. masomeh malek department of biology, tehran university, tehran, iran. allahbedasht mansoorian department of parasitology, school of public health, tehran university of medical sciences, tehran, iran.

b a ckground:   eco-faunistic  studies  are  inevitable  step  in  environmental  researches.  aquatic  organisms  like caddisflies are known as biological indicators for water quality assessment and water resource management. they have special role for energy flow in the freshwater habitats as food web and food chain among aquatic creatures. methods: in addition to an extensive literature revi...

Journal: :caspian journal of environmental sciences 2014
m. pourafrasyabi z. ramezanpour

phytoplanktons are the first bio- indicators of pollution in aquatic ecosystems. phytoplankton assemblage and aquatic ecosystems are always influenced by environmental factors therefore these environmental changes and threats must be understood in any ecosystem. phytoplankton are inexpensive and readily available bio- indicators. in the present study, phytoplankton were used to study the sefid ...

2014
Munashe Chigerwe Jill V Hagey

BACKGROUND Estimation of the quantity of colostral IgG or serum IgG absorbed following ingestion of colostrum by calves is essential for monitoring the effectiveness of colostrum feeding practices on dairy farms. Milk total solids concentrations determination is a critical part of quality assessment of nonsaleable whole milk prior to feeding to calves. To date, on-farm methods to assess colostr...

2001
A.G.J. van der Ham W. Prins

The underlying objective of the present study is to increase gas-solids contact in a circulating fluidized bed by the introduction of obstacles in the riser portion. The presence of such obstacles leads to suppression of radial inhomogeneities in the solids mass flux and concentration, and break-up of solids clusters. At ambient conditions, gas-solids mass transfer was investigated for cocurren...

Journal: :Biotechnology for Biofuels 2009
Jan B Kristensen Claus Felby Henning Jørgensen

BACKGROUND Working at high solids (substrate) concentrations is advantageous in enzymatic conversion of lignocellulosic biomass as it increases product concentrations and plant productivity while lowering energy and water input. However, for a number of lignocellulosic substrates it has been shown that at increasing substrate concentration, the corresponding yield decreases in a fashion which c...

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