An obvious reason for purchasing FLC and CH services is to improve stability of direct farm employment by reducing seasonal personnel transactions with people moving through task assignments that are by nature temporary.Entirely eliminating turnover in a business, however, is rarely either desirable or achievable. The farmer’s decision to extend a job offer and the…
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The locations and polygons of urban parks and schools were obtained from Tele Atlas electronic maps
Given that our study area is surrounded by areas of intensive agriculture , we examined associations with surrogates for potential sources of airborne endotoxin [agricultural land cover and animal-feeding operations , urban parks, and schools] to assess whether proximity to these sources would have predictive power for spatial mapping. Specifically, we investigated associations of daily…
The agricultural vehicle routing problem lies under the broad category of Stochastic Dynamic VRP
These are simplifying assumption, as it has been shown that proper row sequences reduce total turning time substantially . However, dropping this assumption would require solving a routing optimization problem inside the loop that iterates through driving orientations, and many maneuvering/turning motion planning problems inside each route optimization; this would be very expensive computationally. Furthermore,…
The percentage reductions in the outcome variable are of considerable size all throughout the distribution
The experimental sample consists of 500 households located in sub districts that were scheduled to be covered by the program during its first year. We generated experimental variation in the connection fee by offering discount vouchers to a randomly selected subsample. We randomly allocated 200 low-discount vouchers , 200 high-discount vouchers , and left the…
Phosphate use efficiency is defined as the capacity for biomass production using the P absorbed
Watercress is a semi-aquatic plant that grows in f lowing shallow freshwater and is found across Europe, Asia, the Americas, the Caribbean, New Zealand and Australia. Watercress is placed within the Brassicaceae family together with several other important food crops including broccoli, kale, cabbage, and mustard. A significant amount of commercial aquatic watercress cultivation is…
Ventura County is arguably the most complex county with respect to agricultural water
We also discovered that both water source and crop questions needed to be simplified. We achieved this by only asking for water source rank and name, which could be used to search external data for total dissolved solids, water price, and percent of supplier revenue generated from selling water to agricultural consumers. We simplified the crop…
Eggs collected were transferred into larval rearing trays containing spring water where they hatched
Few other household or subject characteristics were significant predictors of personal endotoxin exposure in crude models and all were confounded by dog and cat ownership. Significant predictors of indoor endotoxin in final multivariate models only included flooding damage and lower education levels in mothers that were unexpectedly associated with lower endotoxin. Overall evidence, including a lack…
Legionella species are found naturally in warm and humid environments
Huang et al. applied principal component analysis to data from their study, which showed that controlled exposure to CAPS from the Chapel Hill area induced an increase in neutrophils in the bronchial and alveolar fraction and increased blood fibrinogen levels in young healthy adults . The results of this analysis indicated that among the water-soluble fraction of…
The major metabolites of PCBs are methyl sulfones and polychlorobiphenylols
TDI or acceptable daily intake values indicate the amount of a chemical a person can be exposed to on a daily basis over his or her lifetime without suffering deleterious effects. There are numerous indications from studies of adipose, serum, and breast milk levels showing that exposure to OCs has been generally declining in North…
Serum concentrations of phthalate ester metabolites allow more direct exposure assessment
Despite their lipophilic nature, phthalates are metabolized and excreted in feces and urine within 3 d; consequently, bio-accumulation is not believed to be a problem. Studies measuring urinary monoester metabolite concentrations have revealed higher and more widespread phthalate exposure than had previously been suspected . Notably, several studies have indicated that concentrations of most urinary phthalate…