نتایج جستجو برای: sigma w and modeling soil behavior

تعداد نتایج: 17056076  

2014
Preeti Trivedi Ajay Verma

Timing Jitter and Quantization Error Effects on the performance of Sigma Delta ADC used in SDR Receivers Preeti Trivedi, Dr. Ajay Verma 1 Assistant Professor, SGSITS, Indore, Madhya Pradesh, INDIA 2 Prof. and Head, IET, DAVV, Indore, Madhya Pradesh, INDIA __________________________________________________________________________________________ Abstract: This paper presents the effect of timing...

Journal: :international journal of environmental research 0
a. bartkowiak department of soil science and soil protection, faculty of agriculture and biotechnology, utp university of science and technology in bydgoszcz, bernardyńska 6 st., 85-029 bydgoszcz j. lemanowicz sub-department of biochemistry, faculty of agriculture and biotechnology, utp university of science and technology in bydgoszcz, 85-029 bydgoszcz, bernardyńska 6 st., poland a. siwik-ziomek sub-department of biochemistry, faculty of agriculture and biotechnology, utp university of science and technology in bydgoszcz, 85-029 bydgoszcz, bernardyńska 6 st., poland

the paper demonstrates the result of changes in the physicochemical and biological properties in soil as a result of the operation of illegal dumping sites. soil was sampled from the research points located on the outskirts of the city of bydgoszcz (poland) from the site not affected by illegal dumping sites (control c), within the dumping sites, having removed the waste layer (w), and 10 m awa...

ژورنال: علوم آب و خاک 2017

This study was conducted to investigate the effects of poultry manure (PM) and derived biochars on phosphorous (P) availability and apparent recovery in a calcareous soil. Treatments consisted of four rates of P (0, 30, 60 and 90 µgg-1) and five organic substances (blank, poultry manure and derived biochars at 200, 300 and 400°C). organic substances were incorporated with 400 g of soi...

Journal: :آب و خاک 0
فرحناز سهراب نادر عباسی آزاده مهدی پور

introduction: soil structural stability affects the profitability and sustainability of agricultural systems. particle size distribution (psd) and aggregate stability are the important characteristics of soil. aggregate stability has a significant impact on the development of the root system, water and carbon cycle and soil resistance against soil erosion. soil aggregate stability, defined as t...

Journal: :Journal of environmental management 2012
M B Turrión F Lafuente R Mulas O López C Ruipérez V Pando

This study was undertaken in the context of a project of reclamation of a burned forest area applying municipal waste compost (MWC) and it consisted of an incubation experience carried out under laboratory conditions. The objectives of this research were to asses the effect of three doses of MWC added to burned and unburned calcareous soils on a) SOM mineralization and b) soil microbiological p...

Journal: :Journal of bacteriology 2003
Stephan Zellmeier Ulrich Zuber Wolfgang Schumann Thomas Wiegert

FtsH is a membrane-bound and energy-dependent metalloprotease in bacteria which is involved in the posttranslational control of the activity of a variety of important transcription factors and in the degradation of uncomplexed integral membrane proteins. For Bacillus subtilis, little is known about the target proteins of FtsH protease. Its gene is not essential, but knockout strains display a p...

ژورنال: علوم آب و خاک 2008
افیونی, مجید, بسالت‌پور, علی اصغر , حاج‌عباسی, محمدعلی, خوشگفتارمنش, امیرحسین,

Total petroleum hydrocarbon (TPH) contaminations in soils may be toxic to human, plants and cause groundwater contamination. To achieve maximum TpH- reduction and to establish successfull stable vegetation cover in phytoremediation method, various criteria must be considered to choose the plants carefully. In this study, germination and subsequent growth of seven plants were tested in three soi...

2015
A Andersson Wikström H Österlund A Hedström M Viklander

Diffuse pollution sources have been recognised by the European Water Framework Directive to significantly contribute to pollution of stormwater receivers. Stormwater runoff is considered to represent diffuse pollution sources. The aim of this study was to clarify the contributions of specific sources in the urban environment to the content of organic and inorganic pollutants in stormwater. This...

Journal: :مهندسی سازه 0
جمال صیدی علیرضا قیطاسی

in this research a numerical analysis using plaxis program has been carried out to investigate the behavior of buried concrete box culverts different parameters including load types, loading locations, culvert dimensions, underlying soil specifications, and the coefficient of earth pressure- at- rest. for modeling purpose, patch loading of rtuck or military tank has been substituted to an equiv...

2013
Chuncan Si Xueyan Liu Congyan Wang Lei Wang Zhicong Dai Shanshan Qi Daolin Du

Several studies have shown that soil microorganisms play a key role in the success of plant invasion. Thus, ecologists have become increasingly interested in understanding the ecological effects of biological invasion on soil microbial communities given continuing increase in the effects of invasive plants on native ecosystems. This paper aims to provide a relatively complete depiction of the c...

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