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Usingmolecular dynamics simulations, we study the hydrophobiceffect on electrically doped single layer graphene. With doping levelsmeasured in volts, large changes in contact angle occur for modestvoltages applied to the sheet. The effect can be understood as a renormalizationof the surface tension between graphene and water in the presenceof an electric field generated by the dopant charge, an entirely collectiveeffect termed electrowetting. Because the electronic density of statesscales linearly in the vicinity of the Fermi energy, the cosine ofthe contact angle scales quartically with the applied voltage ratherthan quadratically, as it would for a two-dimensional metal or inmultiple layer graphene. While electrowetting explains the phenomenon,it does not account for the slight asymmetry observed in the hydrophobicresponse between n- and p-doping. [ABSTRACT FROM AUTHOR]

Presents several abstracts of studies on gastroenterology. "Tumors of the Small Intestine," by R. Clement Darling and Claude E. Welch; "Pain: Cardiac or Gastrointestinal?" by Edward S. Orgain; "Antibiotics in the Preoperative Preparation of the Colon: Evaluation of the Present Status," by Robert Turell and Stanley J. Landau; "Surgical Management of Diverticulitis of the Sigmoid Colon," by S. E. O'Brien and K. I. Mustard; "Neglected Appendicitis," by Robert J. Freeark, Edwin Miller and Karl A. Meyer.

Presents abstracts of research on gastroenterology. "Long-Term Results of Vagotomy and Gastroenterostomy in Chronic Duodenal Ulceration," by Harold Burge and E. J. Pick; "Retroperitoneal Duodenal Rupture"; "Postgastrectomy Hemorrhage," by Richard B. Phillips and Wesley A. Childs.

Presents abstracts of several gastroenterology studies. "Pruritus As a Symptom of Internal Disease," by Stephen Rothman; "Carcinoma of the Esophagus," by David P. Boyd, Herbert D. Adams and Ferdinand A. Salzman; "Acute Massive Gastrointestinal Hemorrhage," by Ray Cohn; "A Brief Review of Diaphragmatic Hernia," by Robert G. Wochos.

Presents abstracts of several studies on gastroenterology. "Cancer of the Esophagus and Cardia," by David Hodge; "Diagnosis and Treatment of Serious Hemorrhage From Ulcers," by A. G. Weiss et al; "Common Errors in the Management of Gastrointestinal Disorders," by Marcel Patterson; "Megaloblastic Anemia in Alcoholic Cirrhosis," by Sheldon E. Krasnow et al.

Presents several abstracts of medical studies for gastroenterologists. "Traumatic Perforation of the Esophagus Caused By Self-Catherization With Heavy Electric Wire," by Edward S. Brewster; "Nutritional Deficiencies in Gastrocolic Fistula," by A. M. Connell; "Diagnosis and Management of Anorectal Pain," by Herman Miller.

Presents abstracts of studies related to gastroenterology. "Cardiospasm or Carcinoma? The Roentgen Findings," by Richard H. Marshak and Joan Eliasoph; "Surgical Resection of the Esophagus for Cancer," by E. J. Borges; "Achalasia of the Cardia (Cardiospasm) Simulating Asthma," by M. S. H. Mody; "Total Appendectomy," by W. Reynolds.

Presents abstracts of several articles on gastroenterology. Rupture of the Esophagus; Peptice Esophagitis, Marginal Ulceration, and Peptic Ulcer of the Esophagus; Bad Gastrectomies.

Presents abstracts on several topics as reference for gastroenterologists. Gastrointestinal tract; Esophagus; Stomach.

Presents several abstracts of studies on gastroenterology. "Coexisting Histoplasmosis and Tuberculosis of the Alimentary Tract," by J. W. Peabody and Howard A. Buechner, published in the July 1956 issue of the "American Journal of Medicine,"; "Gastrointestinal Bleeding of Unknown Etiology," by Jack E. Tetirick; "Digestive Ulcer, A Disease to be Considered Unquestionably Hereditary (Recessive Inherence in Predisposition)," by J. J. Dubarr.

Presents two abstracts of research on gastroenterology. "Management of Acute Cholecystitis," by John E. Skandalakis and Charles Jones; "The Cholecystogram and the Clinician," by J. Dudfield Rose.

Prevalence of obesity has increased recently especially in women. Obesity is related to mortality due to non-communicable diseases and has become a public health issue. Among the two important factors to reduce weight calorie limitation alone is modestly effective in initial weight but can result in weight gain after primary weight reduction is common. Therefore adding physical activity to weight maintenance program can reduce weight gain rebound. The aim of this review article was to identify the preventive effect of physical activity on weight maintenance in overweight women. Articles were selected from PubMed database and screened for the relativity to the study objectives, using scoring systems. Eleven studies were found appropriate. No statistical test was done on the data except simple mean and some descriptive analyses. Physical activity is proved to have a significant effect in weight loss/maintenance both in induction and maintenance period. This effect was more significant in higher intensities. Sever intensity physical activity can be effective in weight maintenance in long term but the effect of moderate and light physical activity could not be evaluated due to lack of data.