Oklahoma State University–Stillwater

About: Oklahoma State University–Stillwater is a education organization based out in Stillwater, Oklahoma, United States. It is known for research contribution in the topics: Population & Large Hadron Collider. The organization has 18267 authors who have published 36743 publications receiving 1107500 citations. The organization is also known as: Oklahoma State University & OKState.

Immunity in lepidopteran insects.

Abstract: Lepidopteran insects provide important model systems for innate immunity of insects, particularly for cell biology of hemocytes and biochemical analyses of plasma proteins. Caterpillars are also among the most serious agricultural pests, and understanding of their immune systems has potential practical significance. An early response to infection in lepidopteran larvae is the activation of hemocyte adhesion, leading to phagocytosis, nodule formation, or encapsulation. Plasmatocytes and granular cells are the hemocyte types involved in these responses. Infectious microorganisms are recognized by binding of hemolymph plasma proteins to microbial surface components. This "pattern recognition" triggers phagocytosis and nodule formation, activation of prophenoloxidase and melanization and the synthesis of antimicrobial proteins that are secreted into the hemolymph. Many hemolymph proteins that function in such innate immune responses of insects were first discovered in lepidopterans. Microbial proteinases and nucleic acids released from lysed host cells may also activate lepidopteran immune responses. Hemolymph antimicrobial peptides and proteins can reach high concentrations and may have activity against a broad spectrum of microorganisms, contributing significantly to clearing of infections. Serine proteinase cascade pathways triggered by microbial components interacting with pattern recognition proteins stimulate activation of the cytokine Spatzle, which initiates the Toll pathway for expression of antimicrobial peptides. A proteinase cascade also results inproteolytic activation of phenoloxidase and production of melanin coatings that trap and kill parasites and pathogens. The proteinases in hemolymph are regulated by specific inhibitors, including members of the serpin superfamily. New developments in lepidopteran functional genomics should lead to much more complete understanding of the immune systems of this insect group.

Service quality in China’s hotel industry: a perspective from tourists and hotel managers

Abstract: Assesses the perceptions of service quality in China’s hotel industry, from the perspective of both international tourists and hotel managers. A questionnaire was used to survey a sample of 90 hotel managers and 270 international tourists who visited China and stayed at hotels in Beijing, Shanghai, and Guangzhou. A descriptive statistics analysis was used (paired t‐test and independent t‐test) to evaluate the service quality of China’s hotel industry from both the tourists’ and the managers’ perspectives, and to investigate the four gaps: between tourists’ expectations and their actual perceptions; between managers’ perceptions of tourists’ expectations and the actual expectations of tourists; between managers’ perceptions of a hotel’s service delivery and tourists’ actual perceptions of the service; and between managers’ perceptions of tourists’ expectations and managers’ perceptions of their hotel’s service delivery. The results showed that tourists’ perceptions of service quality provided in the hotel industry in China were consistently lower than their expectations and that managers overestimated the service delivery, compared to tourists’ perceptions of actual service quality, in the hotel industry in China. From the result of gap analysis, it might be concluded that Delivery Gap and Internal Evaluation Gap were the main reasons contributing to the service quality shortfalls in the hotel industry in China.