the storage capacity of hydrogen on na-decorated born nitride nanotubes (bnnts) is investigated by using density functional theory within quantum espresso and gaussian 09. the results obtained predict that a single na atom tends to occupy above the central region of the hexagonal rings in (5,0) and (3,3) bnnt structures with a binding energy of -2.67 and -4.28 ev/na-atom respectively. when a si...

A particular type of coupling of the dilaton field to the metric is shown to admit a simple geometric interpretation in terms of a volume element density independent from the metric. For dimension n = 4 two families of either magnetically or electrically charged static spherically symmetric solutions to the Maxwell–Einstein–Dilaton field equations are derived. Whereas the metrics of the “magnet...

We present a mechanism to construct four-dimensional charged massless Ramond states using the discrete states of a fivebrane Liouville internal conformal field theory. This conformal field theory has background charge, and admits an inner product which allows positive norm states. A connection among supergravity soliton solutions, Liouville conformal field theory, non-critical string theory and...

OBJECTIVE To develop a tool for estimating hospital-specific inpatient prices for major payers. DATA SOURCES AHRQ Healthcare Cost and Utilization Project State Inpatient Databases and complete hospital financial reporting of revenues mandated in 10 states for 2006. STUDY DESIGN Hospital discharge records and hospital financial information were merged to estimate revenue per stay by payer. E...

Case-based hospital billing data from the Health Care Utilization Partnership was used to calculate annual statewide hospital charges for the acute care of traffic injuries in Nebraska. E-codes 810.0 through 819.9 identified traffic injury cases. Admissions and emergency department (ED)-only visits for traffic injuries accrued significantly higher charges than other types of care. Statewide, ho...

OBJECTIVE To describe out-of-pocket costs of inpatient care for children under 5 years of age in district hospitals in Kenya. METHODS A total of 256 caretakers of admitted children were interviewed in 2-week surveys conducted in eight hospitals in four provinces in Kenya. Caretakers were asked to report care seeking behaviour and expenditure related to accessing inpatient care. Family socio-e...

BACKGROUND During 2006, Israeli hospitals faced a clonal outbreak of carbapenem-resistant Klebsiella pneumoniae that was not controlled by local measures. A nationwide intervention was launched to contain the outbreak and to introduce a strategy to control future dissemination of antibiotic-resistant bacteria in hospitals. METHODS In March 2007, the Ministry of Health issued guidelines mandat...

The use of clinical laboratory tests has more than doubled during the past decade. Some observers of the health system feel that this growth is excessive and is a result of current payment systems. This article examines the effects of current reimbursement policies with regard to the use of laboratory tests and prices charged for tests. The results suggest the following: The method of financing...

Based on data obtained from a national sample of the hospital records of inpatients &charged from non-Federal short-stay hospitals, hospital utilization by heart disease and malignant neoplasm patients is examined. The measures of hospital utilization employed are frequencies, rates, percents, and average Iengths of stay. Data are provided for these two specific diagnostic categories and for aI...