In the present research, the titanium-catalyzed ethylene dimerization and more specifically, the concomitant byproducts and polymer formation have been studied in the presence of 2,5-dimethoxytetrahydrofuran as an electron donor compound in the combination with triethylaluminium (TEA) as activator. Then, we added ethylene chlorobromide as a new efficient promoter to the relevant catalyst system...

Agricultural Extension services are among the most important rural services in developing countries. The services are considered to be a key driver of technological change and productivity growth in agriculture. In Kenya, like in the rest of the developing economies, agricultural extension has largely been delivered through supply–driven approaches. Due to perceived low impact of agricultural e...

Tea (Camellia sinensis (L.) Kuntze) is a highly valued plant known for its refreshing taste, medicinal properties, and health benefits. It an evergreen shrub or small tree belonging to the Theaceae family. The productivity quality of tea leaves liquor are strongly influenced by edaphic environmental factors. However, cultivation faces significant challenges due increasing occurrence drought ass...

Interest in systematically exploring factors that have been found to influence the cognitive processing and representation of compounds, such as • frequency-based factors, i.e., the frequencies of the compounds and their constituents (e.g., van Jaarsveld & Rattink, 1988; Janssen et al., 2008); • the productivity (morphological family size), i.e., the number of compounds that share a constituent...

The Fourth International Scientific Symposium on Tea and Human Health was held September 18, 2007 at the U.S. Department of Agriculture in Washington, DC. The symposium was organized by the Tea Council of the U.S.A. and cosponsored by the American Cancer Society, American College of Nutrition, American Medical Women’s Association, American Society for Nutrition, and the Linus Pauling Institute ...