Chloramination of drinking waters has been associated with N-nitrosodimethylamine (NDMA) formation as a disinfection byproduct. NDMA is classified as a probable carcinogen and thus its formation during chloramination has recently become the focus of considerable research interest. In this study, the formation mechanisms of NDMA from ranitidine and trimethylamine (TMA), as models of tertiary ami...

BACKGROUND The purpose of this study was to investigate the pattern of distribution of risk factors for stroke and the 10-year probability of stroke by the Framingham risk score in hypertensive patients visiting private clinics vs. tertiary hospitals. METHODS A total of 2,490 hypertensive patients who attended 61 private clinics (1088 patients) and 37 tertiary hospitals (1402 patients) were e...

Many RNAs need Mg2+to produce stable tertiary structures. Here we describe a simple method to measure the rate and activation parameters of tertiary structure unfolding that exploits this Mg2+dependence. Our approach is based on mixing an RNA solution with excess EDTA in a stopped-flow instrument equipped with an absorbance detector, under conditions of temperature and ionic strength where, aft...

This cross-sectional study assessed knowledge and utilization of the partograph among health care workers in southwestern Nigeria. Respondents were selected by multi-stage sampling method from primary, secondary and tertiary levels of care. 719 respondents comprising of CHEWS--110 (15.3%), Auxiliary Nurses--148 (20.60%), Nurse/Midwives--365 (50.6%), Physicians--96 (13.4%) were selected from pri...

this paper descibes the tertiary prevention in the area of rehabilition and adjustment of chronic mental patients, as practiced at zahedan psychiatric center. a follow-up unit was established at this center, providing services for hospitalized and discharged chronic mental patients. the services include regular visits, enhancement of drug compliance, controlling drug side-effects, family, socia...

The present work comprises the synthesis of one series of diarylmethane dyes containing one or more terminal methoxy substituents together with a variable tertiary amino group. The electronic absorption spectra of the dyes have been determined. As the conjugation of the terminal nitrogen atom improves in the sequence NMez > Kairoline > Julolidine, a progressive hypsochromic shift is observed

The solubility of CO2 in the primary, secondary, tertiary and sterically hindered amine aqueous solutions at various conditions was studied. In the present work, the Modified Kent-Eisenberg (M-KE), the Extended Debye-Hückel (E-DH) and the Pitzer models were employed to study the solubility of CO2 in amine aqueous solutions. Two explicit equations are presented to evalu...

BACKGROUND Studies have found higher survival rates after out-of-hospital cardiac arrest and admission to tertiary heart centers. The aim was to examine the level-of-care at tertiary centers compared with nontertiary hospitals and the association with outcome after out-of-hospital cardiac arrest. METHODS AND RESULTS Consecutive out-of-hospital cardiac arrest patients (n=1078) without ST-segme...