Mental visualization of diagrammatic representations is presumed to be a critical strategy for learning and problem solving, particularly in the sciences. However, little is known about how students employ visualization on genuine scientific tasks. The present study describes undergraduate chemistry students’ use of visualization for problem solving using think-aloud protocols. The analysis sug...

Open AccessCCS ChemistryRESEARCH ARTICLE1 Jul 2021Palladium-Catalyzed O- and N-Glycosylation with Glycosyl Chlorides Shuang An†, Quanquan Wang†, Wanjun Zhu, Qikai Sun, Gang He Gong Chen An† State Key Laboratory Institute of Elemento-Organic Chemistry, College Nankai University, Tianjin 300071 †S. An Q. Wang contributed equally to this work.Google Scholar More articles by author , Wang† Zhu Goog...

Shokri H and Sharifzadeh A Journal of Herbmed Pharmacology, Volume 6, Number 1, January 2017 http://www.herbmedpharmacol.com 2 and is the aborigine of Iran, Afghanistan and Pakistan (5). Zataria multiflora can be recognized by the orbicular, densely gland-dotted, ovate leaves and the dense white, hairy, round buds on the leaf axils. It is an aromatic shrub that reaches 60-90 cm in height. Matur...

In the coming millenium, libraries in order to be effective, need to measure their performance rigorously against the expectations and real needs of their customers. The library of the future will need to be customer sensitive, knowledge creating, agile enterprise. It must provide value to every customer, where value is the customer’s perception of total lifetime benefits minus total lifetime c...