نتایج جستجو برای: chilean arid zone

تعداد نتایج: 133238  

Journal: :The American journal of tropical medicine and hygiene 1990
M L Wilson B LeGuenno M Guillaud D Desoutter J P Gonzalez J L Camicas

The spatial pattern in Senegal of Crimean-Congo hemorrhagic fever (CCHF) virus IgG antibody prevalence in human and sheep was determined as was the relative abundance of potential tick vectors. A systematic, country-wide serological survey of sheep demonstrated that 10.4% of sheep exhibited IgG to CCHF virus. Sexes were infected equally. Antibody prevalence increased with age from 2.1% during t...

Journal: :Environmental science & technology 2007
Balaji Rao Todd A Anderson Greta J Orris Ken A Rainwater Srinath Rajagopalan Renee M Sandvig Bridget R Scanlon David A Stonestrom Michelle A Walvoord W Andrew Jackson

A substantial reservoir (up to 1 kg ha(-1)) of natural perchlorate is present in diverse unsaturated zones of the arid and semi-arid southwestern United States. The perchlorate co-occurs with meteoric chloride that has accumulated in these soils throughout the Holocene [0 to 10-15 ka (thousand years ago)] and possibly longer periods. Previously, natural perchlorate widely believed to be limited...

Journal: :Australian Journal of Agricultural Economics 1966

2017
Jennifer L Kelley Peter M Davies Shaun P Collin Pauline F Grierson

In fishes, alterations to the natural flow regime are associated with divergence in body shape morphology compared with individuals from unaltered habitats. However, it is unclear whether this morphological divergence is attributable to evolutionary responses to modified flows, or is a result of phenotypic plasticity. Fishes inhabiting arid regions are ideal candidates for studying morphologica...

2004
B. IRENE TIELEMAN JOSEPH B. WILLIAMS

We compared physiological, demographic, and ecological variables of larks to gain insights into life history variation along an aridity gradient, incorporating phylogenetic relationships in analyses when appropriate. Quantifying field metabolic rate (FMR) and water influx rate (WIR) of parents feeding nestlings as measures of parental effort, we found that parental FMR and WIR of larks decrease...

2010
Bridget R. Scanlon Abhijit Mukherjee Robert C. Reedy Amarendra K. Sinha

Water and nutrient availability for crop production are critical issues in (semi)arid regions. Unsaturated-zone Cl tracer data and nutrient (NO3 and PO4) concentrations were used to quantify recharge rates using the Cl mass balance approach and nutrient availability in the Thar Desert, Rajasthan, India. Soil cores were collected in dune/interdune settings in the arid Thar Desert (near Jaisalmer...

2017
José M Bastías Pamela Balladares Sergio Acuña Roberto Quevedo Ociel Muñoz

The effect of four cooking methods was evaluated for proximate composition, fatty acid, calcium, iron, and zinc content in salmon and Chilean jack mackerel. The moisture content of steamed salmon decreased (64.94%) compared to the control (68.05%); a significant decrease was observed in Chilean jack mackerel in all the treatments when compared to the control (75.37%). Protein content in both sa...

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