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Culture has returned to the poverty research agenda.

Over the past decade, sociologists, demographers, and even economists have begun asking questions about the role of culture in many aspects of poverty, at times even explaining the behavior of low-income populations in reference to cultural factors. Unlike their predecessors, contemporary researchers rarely claim that culture will sustain itself for multiple generations regardless of structural changes, and they almost never use the term pathology, which implied in an earlier era that people would cease to be poor if they changed...

Recently, biomass-based polymers from renewable resources have received increasing focus
owing to the depletion of petroleum resources. Natural polysaccharides such as cellulose,
hemicellulose, and starch are among the candidates from natural resources for biomass
polysaccharide products including bioplastics. Although several kinds of neutral or anionic
polysaccharides such as chitin, alginic acid, hyaluronic acid, heparin, and chondroitin sulfate
exist in nature, natural cationic polysaccharides are quite limited. Chitin is second only to
cellulose as...