一切为了魂牵梦系的地学 记中国科学院地球化学研究所博士后胡端忠

胡瑞忠 矿床学和矿床地球化学青年科学家,现任中国科学院地球化学研究所副所长,矿床地球化学开放研究实验室主任,国家973项目“大规模成矿作用与大型矿集区预测”的首席科学家,中国矿物岩石地球化学学会常务理事及矿床地球化学专业委员会主任,还担任《矿物学报》和《Journal of Geosciencesof China》副主编、《ChineseJournalof Geoe-chemisty》、《矿物岩石》和《矿物岩石地球化学通报》编委。

SI cube helps students learn SI units and volume

A 10 cm x10 cm x 10 cm "SI cube", which helps students learn SI units, is presented. Students cn physically handle and manipulate the SI cube, which also helps them to have a better appreciation of volume. A template for making the cube is available as supplementary material.

The underlying assumption in chemistry education

The underlying assumption in chemistry education is that chemistry is real, distinct discipline, clearly differentiable from other sciences. Chemistry is the study of matter and its interactions with other matter and with energy, but the aspects which distinguish chemistry are: macroscopic observations and descriptions of properties and change; understanding in terms of atoms and molecules; abstract representations to describe and communicate chemical concepts; and occupational health and safety. These aspects are not unique to chemistry, but their combination make chemistry unique. Over the last three years, there have been major reviews of school science education through the formulation of the Australian National Curriculum and of undergraduate education through the Learning and Teaching Academic Standards Project. In both cases, individual RACI members and chemistry professionals, including school teachers, and RACI working party and workshop, have articulated the unique nature of chemistry and the need for chemistry education as a separate subject.

Arresting the decline in senior school chemistry

Enrolments in Australian Year 11 and year 12 chemistry are declining. In 1992, 23% of Australian year 12 students studied chemistry, decreasing to 18% in 2010. For science as a whole, the decrease is even more dramatic, from 94% to 51%. The decrease is slowing, but is continuing.
How should we respond to the report? Firstly, we should realise that it is not all gloom and doom. Secondly, education is not solely the responsibility of curriculum authorities and teachers. Each RACI member can communicate, inform and generally educate the wider community about the excitement and value of chemical science. Just a couple of hours of your time is not a panacea, but it can still make long-lasting impacts and affect career choices: even the largest beach consists of tiny individual grains of sand.

Avaliação química e da atividade antidiarréica das folhas de Byrsonima cinera DC. (Malpighiaceae)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Informática e ensino de química: investigando a experiência de um grupo de professores

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Polyurethane foam as trapping agent for airborne pesticides : analytical method development /

"Interagency agreement no. 78-D-XO449."

The preparation of leucylalanine-2-C¹⁴ /

L-Leucyl-DL-alanine-2-C¹⁴ with a specific activity of 2.5 uc/mg was prepared in an over-all yield of 22% from alanine-2-c¹⁴. Thirty-three percent of the starting activity was recovered as DL-alanine-2-C¹⁴. A byproduct of the reaction in a yield of 22% was tentatively identified as an intra-or intermolecular anhydride of the peptide.