منابع مشابه
Assessment of awareness and comprehension of chemical hazard symbols among chemistry students
Background: Laboratory activities must be planned and organized carefully because of the danger they may cause. The purpose of this study was to assess students’ awareness and comprehension of chemical hazard warning signs at the Departments of Chemistry of Razi University, Kermanshah, Iran. Materials and Methods: This descriptive study was carried out to assess students’ awarene...
متن کاملThe Eff ects of Chemical Element Symbols in Identifying 2D Chemical Structural Formulas
is study aims to explore the eff ect of chemical element symbols in students’ identifi cation of 2D chemical structural formulas. A chemical conceptual questionnaire, event-related potential experiments and interviews were administered to fi y university students in this study. e results revealed that high achieving students perfprmed diff erent brain activities and strategies to identify...
متن کاملFlags and Symbols
! Gilbert Baker designed the rainbow flag for the 1978 San Francisco's Gay Freedom Celebration. In the original eight-color version, pink stood for sexuality, red for life, orange for healing, yellow for the sun, green for nature, turquoise for art, indigo for harmony and violet for the soul.! First unveiled on 12/5/98 the bisexual pride flag was designed by Michael Page. This rectangular flag ...
متن کاملSymbols and Executive Function
How do symbols affect 3-to 4-year-olds' executive function? Evidence from a reverse-contingency task. Symbols and executive function 2 Abstract In two experiments 330 3-to 4-year-olds competed for stickers in a game where the optimal response strategy was to point to an empty box that their opponent would receive in order to obtain a baited box for themselves. When the baited box contained stic...
متن کاملAsymptotics and 6j-symbols
Recent interest in the Kashaev-Murakami-Murakami hyperbolic volume conjecture has made it seem important to be able to understand the asymptotic behaviour of certain special functions arising from representation theory — for example, of the quantum 6j -symbols for SU(2). In 1998 I worked out the asymptotic behaviour of the classical 6j -symbols, proving a formula involving the geometry of a Euc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nature
سال: 1923
ISSN: 0028-0836,1476-4687
DOI: 10.1038/111883a0