نتایج جستجو برای: 1yr
تعداد نتایج: 96 فیلتر نتایج به سال:
Effects of simulated nitrogen (N) deposition on soil net nitrogen mineralization (NNM) were examined in situ during two growing seasons, using the resin-core technique in the semiarid meadow steppe in Inner Mongolia, China. The aim of this study is to clarify the effect of N levels (0, 10, and 20 kg N ha-1yr-1) and forms (NH4+ and NO3-) on soil mineral N and NNM. Our results showed that N level...
It is greatly expected that the relic neutrino background from past supernovae is detected by Superkamiokande (SK) which is now under construction. We calculate the spectrum and the event rate at SK systematically by using the results of simulations of a supernova explosion and reasonable supernova rates. We also investigate the e ect of a cosmological constant, , on the spectrum, since some re...
Alkaptonuria is a rare autosomal recessive, single-gene metabolic disease caused by the lack of the enzyme homogentisic acid oxidase and characterized by black pigmentation of cartilage and other connective tissues. 38 yr old male was admitted to the orthopedics ward with bilateral hip pain for the past 3 years and inability to walk for the past 1yr. He had also complained of brownish-black dis...
BACKGROUND: Pulmonary arterial pressure (PAP) varies considerably in heart failure (HF) despite similar degrees of left ventricular (LV) dysfunction. Bradykinin alters vascular tone and common variations in the kinin B2 receptor (BDKRB2) gene exists. We hypothesized that genetic variation in this receptor would influence PAP in HF. METHODS: 131 HF patients (>1yr history systolic HF), without C...
BACKGROUND Tillage practices greatly affect carbon (C) stocks in agricultural soils. Quantification of the impacts of tillage on C stocks at a regional scale has been challenging because of the spatial heterogeneity of soil, climate, and management conditions. We evaluated the effects of tillage management on the dynamics of soil organic carbon (SOC) in croplands of the Northwest Great Plains e...
BACKGROUND AND PURPOSE The radiobiological parameters for liver and lung metastases treated with stereotactic body radiation therapy (SBRT) are poorly defined. This project aimed at estimating these parameters from published tumor control probability (TCP) data, and separately for metastases with colorectal cancer (CRC) and non-CRC histology. MATERIALS AND METHODS A total of 62 studies with 8...
BACKGROUND Childhood mortality and morbidity due to RSV is increasing. Our current study was aimed at determining the sero-prevalence rate of RSV IgG antibodies and investigates certain known risk factors for RSV disease severity in infants and pre-school children presenting with various forms of respiratory tract infections in Ilorin, Nigeria. MATERIALS AND METHODS About 280, children and 30...
Mapping and quantifying land degradation status is important for identifying vulnerable areas to design sustainable landscape management. This study maps quantifies in the north Gojjam sub-basin of Upper Blue Nile River (Abbay) using GIS remote sensing integrated with multicriteria analysis (MCA). accomplished a combination biological, physical, chemical indicators generate comprehensive assess...
The task of modern agriculture is to safeguard the production of high quality food, in a sustainable natural environment under the precondition of pollution not exceeding accepted norms. The sustainability of current land use in agro-ecosystems can be assessed with respect to heavy metal accumulation in soils by balancing the input/ output fluxes. The objectives of this study were to model accu...
Excessive soil loss and sediment yield in the highlands of Ethiopia are primary factors that accelerate decline land productivity, water resources, operation function existing infrastructure, as well management practices. This study was conducted at Finchaa catchment Upper Blue Nile basin to estimate rate erosion prioritize most sensitive sub-watersheds using Soil Water Assessment Tool (SWAT) m...
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