We determined the relative positions of the tandem-repeat molecular cytogenetic marker B77, translocation breakpoints, and telosome arms in Gossypium hirsutum cytogenetic stocks by fluorescence in situ hybridization (FISH) analysis of meiotic quadrivalents in 16 single and 2 double translocation heterozygotes and five monotelodisomics. Results delimited the B77 FISH locus to the right arm of th...

Genetic linkage maps play fundamental roles in understanding genome structure, explaining genome formation events during evolution, and discovering the genetic bases of important traits. A high-density cotton (Gossypium spp.) genetic map was developed using representative sets of simple sequence repeat (SSR) and the first public set of single nucleotide polymorphism (SNP) markers to genotype 18...

The debate over whether to provide food-assistance and the form that this assistance should take has a long history in economics. Despite the ongoing debate, there is little rigorous evidence comparing food-assistance in the form of cash versus in-kind. This paper uses a randomized evaluation to assess the impacts and cost-effectiveness of cash, food-vouchers, and food transfers on food consump...

There is a strong presumption among economists that domestic reforms are promoted by regionalism. Yet strong empirical evidence for this proposition is lacking. This paper examines both the theoretical arguments and empirical evidence on this issue, drawing on the relevant economic, political, and legal literature. The authors argue that in general, the case for reciprocity in domestic reforms ...

In an experimental setting in Kenya, we show that certain financial and informational interventions delivered over the mobile phone network can be highly effective in boosting facility delivery rates of poor, rural women. Vouchers covering the full cost of care increased facility delivery rates by one-third, but a small copayment reduced the effect to almost zero. Cash transfers sent over the m...

The addition of acetate to uranium-contaminated aquifers in order to stimulate the growth and activity of Geobacter species that reduce uranium is a promising in situ bioremediation option. Optimizing this bioremediation strategy requires that sufficient acetate be added to promote Geobacter species growth. We hypothesized that under acetate-limiting conditions, subsurface Geobacter species wou...

Going to School in Purdah: Female Schooling, Mobility Norms and Madrasas in Bangladesh This paper looks at the determinants of secondary school attendance in Bangladesh with a focus on the interaction between community gender norms and relative supply of madrasas (i.e. Islamic schools). We present a theoretical framework where the probability of children's school participation varies with respe...

This paper examines the nature of high growth firms (HGFs) and how they are supported by public policy. HGFs have become a key focus for public policy within the UK and across many OECD economies in recent years. In parallel with this, there has been a growing body of research and evidence which has accumulated on the nature of these firms. However, sizeable gaps in our knowledge remain on how ...

Internet attacks that use Web servers to exploit browser vulnerabilities to install malware programs are on the rise [D04,R04,B04,S05]. Several recent reports suggested that some companies may actually be building a business model around such attacks [IF05,R05]. Expensive, manual analyses for individually discovered malicious Web sites have recently emerged [F04,G05]. In this paper, we introduc...

Biological nitrogen fixation plays a crucial role in the marine cycle, impacting global productivity and related carbon fluxes. The strains were analyzed by gene annotation, growth conditions phylogenetic analysis of 16S rRNA sequences.These two isolated from coastal sediment at Xiaoshi Island Weihai, China. sequences. It was revealed that D04 T AAT contain set nif clusters responsible for fixa...