Risky Business: Temporal and Spatial Variation in Preindustrial Dryland Agriculture

Dryland Agriculture: Sociology

Temporal and spatial variation of the phytoplankton community in the Chahnime Reservoirs-Sistan

This study investigated seasonal changes in density and diversity of phytoplankton, chlorophyll a content, and some environmental characteristics in the Sistan region during 2014. Totally, we detected 28 genera that belonged to five groups of Chlorophyta (12 genera), Bacilloriophyta (7 genera), Cyanophyta (5 genera), Dinophyta (3 genera), and Euglenophyta (1 genus). We observed that Chlorophyta...

Spatial and Temporal Variation in Evapotranspiration

Evapotranspiration represents the combined loss of soil water from the earth’s surface to the atmosphere through evaporation of water from the soil or plant surfaces and transpiration via stomates of the plant. In agricultural production systems these two losses of water represent a major component of the water balance of the crop. If we examine evapotranspiration over time throughout a growing...

Risky business.

In prior studies by high-level commissions, emphasis was given to improving the scientific basis and institutional procedures for risk assessment and risk regulation within existing statutory frameworks. Recommendations have led to slow but steady progress. This study is considerably different. It emphasizes a public health approach for efficient use of resources in a new flexible framework for...

Risky business.

With the establishment of the National Center for Advanced Translational Sciences (NCATS) in December of 2011, the National Institutes of Health (NIH) and the US government made a commitment to directly invest in translational research. With NCATS, the NIH will invest tax payer dollars in the riskiest ‘precompetitive’ stages of drug discovery. NCATS has also articulated a commitment to bring to...