I test for welfare-induced migration by comparing AFDC participation in border counties to interior counties in the same state. If migration costs are lower for border county residents, border counties on the high-benefit side of a state border should have higher welfare participation relative to the state's interior counties. Border counties on the low-benefit side should have lower welfare pa...

The authors explore how to define a welfare spell and how well surveys measure welfare spells. By comparing survey and administrative data from the Work Pays Demonstration Project in California on the receipt of Aid to Families with Dependent Children (AFDC), they find that a substantial amount of administrative churning occurs in administrative data. Through a mixing model of several break len...

a molecular survey was performed for identification theileria spp in sheep and ticks during from 2010-2011 in fasa and kazeroun areas, fars province, iran. a total of 100 sheep from different flocks were clinically examined and blood samples with ixodid ticks collected. the prepared blood smears from capillary vein of ear were stained with giemsa methods and examined by using light microscope. ...

The diversity and richness of species are of important components to evaluate the health of ecologic system of rangelands. This research was conducted to investigate the biodiversity in riparian and neighboring areas via comparison of indices in Javaherdeh rangeland of Ramsar. Plot-transects was randomly used to estimate diversity, richness, dominance, and evenness indices in two regions. Multi...

background: to use different methods for serodiagnosis of ruminants' haemonchosis is important because detection of egg in the faeces is not so reliable. methods: peptide bands of 5 different crude antigens of intestine, uterus, cuticle, whole male and whole female of hae­monchus contortus were determined using sds-page and western blotting. five lambs were infected with 10,000 third stage larv...