Benthic chamber measurements of the reactants and products involved with biogenic matter diagenesis (oxygen, ammonium, nitrate, silicate, phosphate, TCO₂, alkalinity) were used to define fluxes of these solutes into and out of the sediments off southern and central California. Onshore to offshore transects indicate many similarities in benthic fluxes between...
Production of renewable energy from biomass has been promoted as means to improve greenhouse gas balance in energy production, improve energy security, and provide jobs and income. However, uncertainties remain as to how the agriculture and forest sectors might jointly respond to increased demand for bioelectricity feedstocks and the potential...
We present a novel approach based on fibre-optic distributed temperature sensing (DTS) to measure the two-dimensional thermal structure of the surface layer at high resolution (0.25 m, ≈ 0.5 Hz). Air temperature observations obtained from a vertically oriented fibre optics array of approximate dimensions 8 m x 8 m and...
BACKGROUND: After 2 decades of focused efforts to eradicate polio, the impact of eradication activities on health
systems continues to be controversial. This study evaluated the impact of polio eradication activities on routine immunization
(RI) and primary healthcare (PHC).
METHODS: Quantitative analysis assessed the effects of polio eradication campaigns on...
Full Text:
: Kenneth Maes; Hailom Banteyerga; Robel Hailom; Rahel Zewengel;
Melkam Hailom Graphics and Mapping: Anna
BACKGROUND: After 2 decades of focused efforts to eradicate polio, the impact of eradication activities on health
systems continues to be controversial. This study evaluated the impact of polio eradication activities on routine immunization
(RI) and primary healthcare (PHC).
METHODS: Quantitative analysis assessed the effects of polio eradication campaigns on...
Full Text:
Primary
Health Care: A Mixed-Methods Study
Closser, S., Cox, K., Parris, T. M., Landis, R. M., Justice
Over the past 60 years, housing growth has outpaced population growth
in the United States. Conservationists are concerned about the far-reaching environmental
impacts of housing development, particularly in rural areas. We use
clustering analysis to examine the pattern and distribution of housing development
since 1940 in and around the Northern...
In the existing 276 international river basins, the increase in water variability projected by most climate change scenarios may present serious challenges to riparian states.This research maps the institutional resilience to water variability in transboundary basins and combines it with both historic and projected variability regimes, with the objective of...
Spawning salmon create patches of disturbance through redd digging which can reduce macroinvertebrate abundance and biomass in spawning habitat. We asked whether displaced invertebrates use non-spawning habitats as refugia in streams. Our study explored how the spatial and temporal distribution of macroinvertebrates changed during a pink salmon (Oncorhynchus gorbuscha) spawning...
There is considerable interest in the biogeochemical cycling of cadmium (Cd) and phosphate (PO4) in surface waters, driven in part by the ongoing development of a paleonutrient proxy that utilizes Cd preserved in fossil planktonic foraminifera to determine past PO4 utilization efficiencies in ocean surface waters. The present article reports...
Fruit set of sweet cherries was reduced if sprays containing fluoride (sodium or ammonium fluoride or hydrofluoric acid) were applied during anthesis. Sprays applied at other times during the fruit-growing season caused fruit and leaf symptoms, depending on the concentration of fluoride, but no reductions in fruit set. Symptoms of...