نتایج جستجو برای: soil factors

تعداد نتایج: 1242692  

2015
Ning Zong Jing Jiang Peili Shi Minghua Song Zhenxi Shen Xianzhou Zhang

Quantifying the effects of nutrient additions on soil microbial respiration (R m) and its contribution to soil respiration (R s) are of great importance for accurate assessment ecosystem carbon (C) flux. Nitrogen (N) addition either alone (coded as LN and HN) or in combination with phosphorus (P) (coded as LN + P and HN + P) were manipulated in a semiarid alpine meadow on the Tibetan Plateau si...

2017
Yen-Chih Lin Ie-Bin Lian Chew-Teng Kor Chia-Chu Chang Pei-Yuan Su Wan-Tzu Chang Yu-Fen Liang Wei-Wen Su Maw-Soan Soon

OBJECTIVES Metabolic factors are major risk factors for non-alcoholic fatty liver disease although other factors may also contribute to development of fatty liver disease. We explored the association between exposure to soil heavy metals and prevalence of fatty liver disease. METHODS We retrospectively analysed data from patients diagnosed with fatty liver disease in 2014 at the Health Evalua...

Journal: :The Science of the total environment 2012
J Batlle-Aguilar A Brovelli J Luster J Shrestha P A Niklaus D A Barry

The Riparian Soil Model (RSM) of Brovelli et al. (2012) was applied to study soil nutrient turnover in a revitalized section of the Thur River, North-East Switzerland. In the present work, the model was calibrated on field experimental data, and satisfactorily reproduced soil respiration, organic matter stocks and inorganic nitrogen fluxes. Calibrated rates were in good agreement with the range...

Journal: :به زراعی کشاورزی 0
شهرام صداقت حور دانشیار گروه باغبانی، دانشکده کشاورزی، واحد رشت، دانشگاه آزاد اسلامی، رشت، ایران لیلا خیرآبادی کارشناسی ارشد گیاهان زینتی، گروه باغبانی، دانشکده کشاورزی، واحد رشت، دانشگاه آزاد اسلامی، رشت، ایران

according to high importance of sodding for fast creating green beds in all seasons, this experiment carried out with aimidentifying suitable substrate and covering plant including two lawn genus and dichondra with blend seed. the trial carried out as factorial experiment with three factors based on complete block design in three replications. experimental factors consisted of planting networks...

2005
Michael H. Paller G.Timothy Jannik Lynn D. Wike

Cs transfer factors were computed for small mammals collected from the dried sediment areas of a partially drained, contaminated reservoir. Soil Cs concentrations were heterogeneous on small and large spatial scales, with a geometric mean of 253.1 Bq/kg dry weight. About 50% of the variance in cotton rat Sigmodon hispidus tissue Cs levels was explained by variation in soil Cs levels. Soil to an...

Journal: :مهندسی بیوسیستم ایران 0
مجید دهقانی دانشگاه شیراز، دانشکده کشاورزی، بخش مهندسی بیوسیستم سیدحسین کارپرورفرد هیئت علمی / دانشگاه شیراز

performance optimization of chisel tine was proposed by using a chisel plow with adjustable rake angle. effective treatments consisted of soil moisture at 0.5, 0.7 and 0.9 of plastic limit (pl), three rake angle of 30, 40 and 50 degree and speeds of to 3, 5 and 7 km h-1. the measured parameters included draft, soil disturbance area, soil upheaving area, clod mean weight diameter (mwd), specific...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1392

gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...

2010
GERGELY TOTH

Executive Summary Soil quality is an account of the soil's ability to provide ecosystem and social services through its capacities to perform its functions under changing conditions (after Tóth et al. 2007.) The concept of soil quality expressed by this definition allows practical applications with regards to targeted social and/or ecosystem services, including agri-environmental services. The ...

Journal: :PLoS Neglected Tropical Diseases 2009
Mirjam Kaestli Mark Mayo Glenda Harrington Linda Ward Felicity Watt Jason V. Hill Allen C. Cheng Bart J. Currie

BACKGROUND The soil-dwelling saprophyte bacterium Burkholderia pseudomallei is the cause of melioidosis, a severe disease of humans and animals in southeast Asia and northern Australia. Despite the detection of B. pseudomallei in various soil and water samples from endemic areas, the environmental habitat of B. pseudomallei remains unclear. METHODOLOGY/PRINCIPAL FINDINGS We performed a large ...

Journal: :international journal of advanced biological and biomedical research 2014
fatemeh madadian chaleshtory naser honarjoo ahmad jalalian

objective: soil organic carbon has been the most important soil quality measurement factors and has intense relation with soil physical, chemical and biological characteristics. organic matter and its components are important factors of soil aggregates constitution and stability and play significant role in its structure. so, this research has been done for achieving this purpose. methods: this...

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