We give new formulas for the asymptotics of the number of spanning trees of a large graph. A special case answers a question of McKay [Europ. J. Combin. 4 149–160] for regular graphs. The general answer involves a quantity for infinite graphs that we call ‘tree entropy’, which we show is a logarithm of a normalized determinant of the graph Laplacian for infinite graphs. Tree entropy is also exp...

OBJECTIVE The study focuses on psychosocial variables related to suicide ideation in young soldiers. METHOD 1329 Soldiers were randomly selected from the Infantry Forces in different regions. All the soldiers were requested to complete the Beck Scale for Suicide Ideation (BSSI) as well as General Health Questionnaire (GHQ-28). Data were analyzed using correlation tests. RESULTS The results ...

Bacillus subtilis was recently reported to synthesize unsaturated fatty acids (UFAs) with a double bond at positions 5, 7, and 9 (M. H. Weber, W. Klein, L. Muller, U. M. Niess, and M. A. Marahiel, Mol. Microbiol. 39:1321-1329, 2001). Since this finding would have considerable importance in the double-bond positional specificity displayed by the B. subtilis acyl lipid desaturase, we have attempt...

www.aafp.org/afp AMERICAN FAMILY PHYSICIAN 1329 dren. Whites are affected more often than persons of Asian ethnicity, who are affected more often than blacks. In addition, urolithiasis occurs more frequently in hot, arid areas than in temperate regions. Decreased fluid intake and consequent urine concentration are among the most important factors influencing stone formation. Certain medications...

Yigeng Huangfu 1, Shengzhao Pang 1,*, Babak Nahid-Mobarakeh 2, Akshay Rathore 3, Fei Gao 4 and Dongdong Zhao 1 1 School of Automation, Northwestern Polytechnical University, Xi’an 710072, China; [email protected] (Y.H.); [email protected] (D.Z.) 2 Research Group in Electrical and Electronics, Université de Lorraine, 54518 Vandoeuvre-les-Nancy, France; [email protected] 3...

a School of Fisheries and Ocean Sciences, University of Alaska, 905 North Koyukuk Drive, 245 O'Neill Building, Fairbanks, Alaska, 99775, USA b Alaska SeaLife Center, PO Box 1329, 301 Railway Ave, Seward, Alaska, 99664, USA c Baylor University, One Bear Place #97388, Waco, Texas, 76798, USA d National Marine Mammal Laboratory, National Oceanic and Atmospheric Administration, 7600 Sand Point Way ...

A quantum theory of thermal reaction rates is presented which may be viewed as an extension of the recently developed "quantum instanton" (QI) model [W. H. Miller, Y. Zhao, M. Ceotto, and S. Yang, J. Chem. Phys. 119, 1329 (2003)]. It is based on using higher derivatives of the flux-flux autocorrelation function C(t) (as given by Miller, Schwartz, and Tromp) at t=0 to construct a short time appr...

Histiocytoses describe a diverse group of proliferative disorders involving dentritic cells and macrophages. They include a spectrum of diseases including a reactive inflammatory accumulation of cells, pathologic immune activation, or neoplastic clonal proliferation. Advanced molecular technologies are resulting in new breakthroughs in understanding the pathophysiology of histiocytic disorders ...