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Showing 1 to 12 of 808 entries
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Life without fieldwork: Some lecturers' perceptions of geography and environmental science fieldwork

discipline specific instruction (e.g., engineering curriculum, social science teachers, geology pedagogy)

Fuller I, Scott I.
GSID: 0tuH6OMA-wYJ
I Scott, I Fuller, S Gaskin - Journal of Geography in Higher …, 2006 - Taylor & Francis

Internationally, fieldwork is seen as intrinsic to geographical education. Fieldwork is here defined as any study of the environment that takes place outside the classroom. This paper …

Synthesis and Characterization of Iron-Nitrogen-Doped Graphene/Core-Shell Catalysts: Efficient Oxidative Dehydrogenation of N-Heterocycles.

Journal of the American Chemical Society

Cui X, Li Y, Bachmann S, Scalone M, Surkus AE, Junge K, Topf C, Beller M.
PMID: 26230874
J Am Chem Soc. 2015 Aug 26;137(33):10652-8. doi: 10.1021/jacs.5b05674. Epub 2015 Aug 11.

An important goal for nanocatalysis is the development of flexible and efficient methods for preparing active and stable core-shell catalysts. In this respect, we present the synthesis and characterization of iron oxides surrounded by nitrogen-doped-graphene shells immobilized on carbon...

Bottom-Up Construction of a CO2-Based Cycle for the Photocarbonylation of Benzene, Promoted by a Rhodium(I) Pincer Complex.

Journal of the American Chemical Society

Anaby A, Feller M, Ben-David Y, Leitus G, Diskin-Posner Y, Shimon LJ, Milstein D.
PMID: 27400288
J Am Chem Soc. 2016 Aug 10;138(31):9941-50. doi: 10.1021/jacs.6b05128. Epub 2016 Jul 27.

The use of carbon dioxide for synthetic applications presents a major goal in modern homogeneous catalysis. Rhodium-hydride PNP pincer complex 1 is shown to add CO2 in two disparate pathways: one is the expected insertion of CO2 into the...

Surface changes on comet 67P/Churyumov-Gerasimenko suggest a more active past.

Science (New York, N.Y.)

El-Maarry MR, Groussin O, Thomas N, Pajola M, Auger AT, Davidsson B, Hu X, Hviid SF, Knollenberg J, Güttler C, Tubiana C, Fornasier S, Feller C, Hasselmann P, Vincent JB, Sierks H, Barbieri C, Lamy P, Rodrigo R, Koschny D, Keller HU, Rickman H, A'Hearn MF, Barucci MA, Bertaux JL, Bertini I, Besse S, Bodewits D, Cremonese G, Da Deppo V, Debei S, De Cecco M, Deller J, Deshapriya JD, Fulle M, Gutierrez PJ, Hofmann M, Ip WH, Jorda L, Kovacs G, Kramm JR, Kührt E, Küppers M, Lara LM, Lazzarin M, Lin ZY, Lopez Moreno JJ, Marchi S, Marzari F, Mottola S, Naletto G, Oklay N, Pommerol A, Preusker F, Scholten F, Shi X.
PMID: 28325842
Science. 2017 Mar 31;355(6332):1392-1395. doi: 10.1126/science.aak9384. Epub 2017 Mar 21.

The Rosetta spacecraft spent ~2 years orbiting comet 67P/Churyumov-Gerasimenko, most of it at distances that allowed surface characterization and monitoring at submeter scales. From December 2014 to June 2016, numerous localized changes were observed, which we attribute to cometary-specific...

Highly efficient four-component synthesis of 4(3H)-quinazolinones: palladium-catalyzed carbonylative coupling reactions.

Angewandte Chemie (International ed. in English)

He L, Li H, Neumann H, Beller M, Wu XF.
PMID: 24338922
Angew Chem Int Ed Engl. 2014 Jan 27;53(5):1420-4. doi: 10.1002/anie.201308756. Epub 2013 Dec 13.

Given the importance of quinazolinones and carbonylative transformations, a palladium-catalyzed four-component carbonylative coupling system for the synthesis of diverse 4(3H)-quinazolinone in a concise and convergent fashion has been developed. Starting from 2-bromoanilines (1 mmol), trimethyl orthoformate (2 mmol), and...

A convenient and selective palladium-catalyzed aerobic oxidation of alcohols.

Chemistry (Weinheim an der Bergstrasse, Germany)

Gowrisankar S, Neumann H, Gördes D, Thurow K, Jiao H, Beller M.
PMID: 24127139
Chemistry. 2013 Nov 18;19(47):15979-84. doi: 10.1002/chem.201302526. Epub 2013 Oct 14.

An efficient procedure for the oxidation of primary and secondary alcohols to aldehydes and ketones, respectively, with molecular oxygen under ambient conditions has been achieved. By applying catalytic amounts of Pd(OAc)2 in the presence of tertiary phosphine oxides (O=PR3)...

Promoting quality care for recently resettled populations: curriculum development for internal medicine residents.

Journal of graduate medical education

MacNamara M, Wilhelm A, Dy G, Andiman S, Landau C, Poshkus M, Feller E.
PMID: 24949138
J Grad Med Educ. 2014 Jun;6(2):310-4. doi: 10.4300/JGME-D-13-00170.1.

BACKGROUND: Residents report they lack preparation for caring for an increasingly diverse US population. In response, a variety of curricula have been developed to integrate cultural competency into medical training programs. To date, none of these curricula has specifically...

Design and enantioselective synthesis of Cashmeran odorants by using "enol catalysis".

Angewandte Chemie (International ed. in English)

Felker I, Pupo G, Kraft P, List B.
PMID: 25573140
Angew Chem Int Ed Engl. 2015 Feb 02;54(6):1960-4. doi: 10.1002/anie.201409591. Epub 2015 Jan 08.

Novel Cashmeran odorants were designed by molecular modeling. Their short syntheses involve a novel asymmetric Brønsted acid catalyzed Michael addition of unactivated α-substituted ketones. This key transformation was realized by utilizing a new type of enol activation catalysis and...

Oculocutaneous Albinism and Squamous Cell Carcinoma of the Skin of the Head and Neck in Sub-Saharan Africa.

Journal of skin cancer

Lekalakala PT, Khammissa RA, Kramer B, Ayo-Yusuf OA, Lemmer J, Feller L.
PMID: 26347819
J Skin Cancer. 2015;2015:167847. doi: 10.1155/2015/167847. Epub 2015 Aug 12.

Oculocutaneous albinism which is characterised by impaired melanin biosynthesis is the most common inherited pigmentary disorder of the skin and it is common among Blacks in sub-Saharan Africa. All albinos are at great risk of developing squamous cell carcinoma...

Non-Pincer-Type Manganese Complexes as Efficient Catalysts for the Hydrogenation of Esters.

Angewandte Chemie (International ed. in English)

van Putten R, Uslamin EA, Garbe M, Liu C, Gonzalez-de-Castro A, Lutz M, Junge K, Hensen EJM, Beller M, Lefort L, Pidko EA.
PMID: 28429449
Angew Chem Int Ed Engl. 2017 Jun 19;56(26):7531-7534. doi: 10.1002/anie.201701365. Epub 2017 Apr 21.

Catalytic hydrogenation of carboxylic acid esters is essential for the green production of pharmaceuticals, fragrances, and fine chemicals. Herein, we report the efficient hydrogenation of esters with manganese catalysts based on simple bidentate aminophosphine ligands. Monoligated Mn PN complexes...

Selective cobalt nanoparticles for catalytic transfer hydrogenation of N-heteroarenes.

Chemical science

Chen F, Sahoo B, Kreyenschulte C, Lund H, Zeng M, He L, Junge K, Beller M.
PMID: 28989657
Chem Sci. 2017 Sep 01;8(9):6239-6246. doi: 10.1039/c7sc02062g. Epub 2017 Jul 12.

Nitrogen modified cobalt catalysts supported on carbon were prepared by pyrolysis of the mixture generated from cobalt(ii) acetate in aqueous solution of melamine or waste melamine resins, which are widely used as industrial polymers. The obtained nanostructured materials catalyze...

Epstein-Barr Virus and Its Association with Oral Hairy Leukoplakia: A Short Review.

International journal of dentistry

Khammissa RA, Fourie J, Chandran R, Lemmer J, Feller L.
PMID: 27047546
Int J Dent. 2016;2016:4941783. doi: 10.1155/2016/4941783. Epub 2016 Mar 07.

In immunocompromised subjects, Epstein-Barr virus (EBV) infection of terminally differentiated oral keratinocytes may result in subclinical productive infection of the virus in the stratum spinosum and in the stratum granulosum with shedding of infectious virions into the oral fluid...

Showing 1 to 12 of 808 entries