In this paper, we study the existence of a skew Killing spinor (see the definition below) on 2 and 3-dimensional Riemannian spin manifolds. We establish the integrability conditions and prove that these spinor fields correspond to twistor spinors in the two dimensional case while, up to a conformal change of the metric, they correspond to parallel spinors in the three dimensional case.

infant mortality and morbidity present important challenges to those concerned with community health. we did this research to study epidemiology of diseases of infancy in city of tehran. during 15 days, of 6395 deliveries in tehran hospitals a cohort of 6267 live births entered this study. follow up data were gathered in 1st, 3rd, 6th and 12th months of birth. in this period, 5382 occurrence of...

Two sensitive spectrophotometric methods are presented for the assay of Repaglinide in bulkdrug and in formulations using methyl orange, as reagents. Oxidant by reacting with a fixedamount of either methyl orange and measuring the absorbance at 485.2 nm (method-I) andmeasuring the absorbance at 618.9 nm (method-II). Developed method is based on the formationof extractable colored complex of dru...

In this article electrochemical determination of captopril at the surface of the platinum coated nanoporous gold film (PtNPGF) electrode is reported using the cyclic voltammetry and amperometry. For the preparation of PtNPGF, the surface of NPGF electrode was covered with Cu layer using underpotential electrochemical deposition (UPD).Afterward, the copper layer is replaced with platinum ions vi...

Background: Diagnosis and management of malnutrition in HIV- infected children is important as it is both a manifestation as well as an independent risk factor for death. Extent in hilly poor outreach areas of North India has been poorly studied.  Aim: to study the prevalence of malnutrition among children with HIV/AIDS using WHO z- score and Indian Academy of Pediatrics (IAP) method and effect...

Stock market is affected by news and information. If the stock market is not efficient, the reaction of stock price to news and information will place the stock market in overreaction and under-reaction states. Many models have been already presented by using different tools and techniques to forecast the stock market behavior. In this study, the reaction of stock price in the stock market was ...

in this article electrochemical determination of captopril at the surface of the platinum coated nanoporous gold film (ptnpgf) electrode is reported using the cyclic voltammetry and amperometry. for the preparation of ptnpgf, the surface of npgf electrode was covered with cu layer using underpotential electrochemical deposition (upd).afterward, the copper layer is replaced with platinum ions vi...

introduction : zinc deficiency decreases appetite, stunts the growth and increases incidence of infection and if zinc deficiency persists it may cause short stature and delay in puberty. the aim of this research is to specify the level of serum zinc in children with growth disorder and weight gaining. methods : this cross sectional descriptive study was done on 460 children under 5 years who we...

we aimed to clarify the status and causes of mortality and to provide a general strategy to increase the longevity and improve human health. mortality rate of under 5 years old is an important indicator of development in different communities and reveals their life quality. it was a case – control study, data was collected from all deaths of under five years that had been recorded in rural area...