Characterization and source apportionment of atmospheric organic and elemental carbon during fall and winter of 2003 in Xi’an, China J. J. Cao, J. C. Chow, S. C. Lee, Y. Li, S. W. Chen, Z. S. An, K. Fung, J. G. Watson, C. S. Zhu, and S. X. Liu State Key Laboratory of Loess & Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China Desert Research Inst...

We prove existence, uniqueness, and regularity properties for a solution u of the Bellman-Dirichlet equation of dynamic programming: (1) max {I]u+f i} =0 in (2 i = 1 , 2 u=O on 092, where D and L 2 are two second order, uniformly elliptic operators. The method of proof is to rephrase (1) as a variational inequality for the operator K = L 2 (D)1 in L2(O) and to invoke known existence theorems. F...

OBJECTIVE To study the relationship between bullying behavior and psychopathology. MATERIALS AND METHODS A total of 1 092 students identified their peers' bullying status based on the Bull-S questionnaire. Parents completed the Child Behavior Checklist (CBCL) to determine psychopathology levels. RESULTS The bullying group had associations with anxiety, somatic symptoms, oppositionalism and ...

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Dirk Wernicke,* Corinna Thiel,* Corina M. Duja-Isac, Kirill V. Essin, Matthias Spindler, Derek J. R. Nunez, Ralph Plehm, Niels Wessel, Annette Hammes, Robert-J. Edwards, Andrea Lippoldt, Ute Zacharias, Hinrik Strömer, Stefan Neubauer, Michael J. Davies, Ingo Morano, and Ludwig Thierfelder Max-Delbrück Center for Molecular Medicine, 13 092 Berlin; Clinic of Internal Medicine, Julius-Maximilians ...