نتایج جستجو برای: microbial parameters

تعداد نتایج: 686393  

2012
Nuria Bonilla José A. Gutiérrez-Barranquero Antonio de Vicente Francisco M. Cazorla

The practice of adding organic amendments to crop soils is undergoing resurgence as an efficient way to restore soil organic matter content and to improve soil quality. The quantity and quality of the organic matter inputs affect soil physicochemical properties and soil microbiota, influencing different parameters such as microbial biomass and diversity, community structure and microbial activi...

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...

2016
Andrea Obersteiner Stefanie Gilles Ulrike Frank Isabelle Beck Franziska Häring Dietrich Ernst Michael Rothballer Anton Hartmann Claudia Traidl-Hoffmann Michael Schmid Ulrich Melcher

Pollen allergies have been rapidly increasing over the last decades. Many allergenic proteins and non-allergenic adjuvant compounds of pollen are involved in the plant defense against environmental or microbial stress. The first aim of this study was to analyze and compare the colonizing microbes on allergenic pollen. The second aim was to investigate detectable correlations between pollen micr...

Journal: :آب و خاک 0
مژگان بویراحمدی فایز رئیسی جهانگرد محمّدی

abstract soil microbiological criteria are a complex reflection of interactive metabolic processes that may not be evaluated only by measuring a single parameter but rather it requires the simultaneous determination of more parameters and combining them. the objective of this research was to study enzyme activities: microbial biomass carbon ratios in salinized and none-saline soils in the prese...

2007
Tek Chand Bhalla Nitya Nand Sharma Monica Sharma

CONTENTS Introduction Food Spoilage and General Principles Underlying Spoilage of Food Intrinsic Parameters Extrinsic Parameters Microbial Spoilage of Foods Spoilage of fresh and ready-to-eat meat products Spoilage of milk and milk products Spoilage of fruits and vegetables Spoilage of canned foods Major Food Borne Infections/ Intoxications Caused by Bacteria General Control Measures for Preven...

2017
JEFF S. BOWMAN TRISTA J. VICK-MAJORS RACHAEL MORGAN-KISS CRISTINA TAKACS-VESBACH HUGH W. DUCKLOW JOHN C. PRISCU

The Palmer and McMurdo LTER (Long Term Ecological Research) sites represent climatic and trophic extremes on the Antarctic continent. Despite these differences, the microbial components of the McMurdo lake and Palmer marine ecosystems share fundamental characteristics, including the production of organic carbon via autotrophy and its assimilation via heterotrophy. We leveraged 20+ years of obse...

2011
A. Abril L. Martinez

We evaluated the abundance of microbial functional groups involved in compost fertility, and the chemical parameters of maturity and quality most commonly analyzed in compost products. We employed compost produced using the same hydrolytic stage and two maturation processes (with and without earthworms) and with different organic wastes. Our aim was to propose a valid tool for measuring the qua...

2016
Christian Wurzbacher Andrea Fuchs Katrin Attermeyer Katharina Frindte Hans-Peter Grossart Michael Hupfer Peter Casper Michael T. Monaghan

Sediments are depositional areas where particles sink from water columns, but they are also microbial hotspots that play an important role in biogeochemical cycles. Unfortunately, the importance of both processes in structuring microbial community composition has not been assessed. We surveyed all organismic signals of the last ca. 170 years of sediment by metabarcoding, identifying global tren...

Journal: Pollution 2020

Microbial fuel cell represents an emerging technology to attain electrical energy from wastewater. There are several alternative methods available for wastewater treatment; Microbial fuel cell is one of them, which generates green energy from wastewater for making a contribution to renewable sources of energy. This study states the performance of microbial fuel cell with different parameters i....

Journal: :تحقیقات آب و خاک ایران 0
مهدی باهمت کارشناسی ارشد، پردیس کشاورزی و منابع طبیعی محسن فرحبخش استادیار، پردیس کشاورزی و منابع طبیعی احمدعلی پوربابایی استادیار، پردیس کشاورزی و منابع طبیعی غلامرضا ثواقبی دانشیار، پردیس کشاورزی و منابع طبیعی

use of electrokinetic technique for remediation of contaminated soils has recently been highly attended to, but there are still concerns regarding the effect of this process on soil microbial activity. in this study, changes in concentration of heavy metals extractable through 4n nitric acid, microbial biomass-c, and microbial coefficient, following electrokinetic remediation of a native soil c...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید