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A simple method for analyzing nitrite in urine has been developed to confirm and quantify the amount of nitrite in potentially adulterated urine samples. The method involved separation of nitrite by capillary electrophoresis and direct UV detection at 214 nm. Separation was performed using a bare fused silica capillary and a 25 mM phosphate run buffer at a pH of 7.5. Sample preparation consisted of diluting the urine samples 1:20 with run buffer and internal standard, and centrifuging for 5 min at 2500 rpm. The sample was hydrodynamically injected, then separated using -25 kV with the column maintained at 35 degrees C. The method had upper and lower limits of linearity of 1500 and 80 microg/mL nitrite, respectively, and a limit of detection of 20 microg/mL. The method was evaluated using the National Committee for Clinical Laboratory Standards (NCCLS) protocol (Document EP10-A2), and validated using controls, standards, and authentic urine samples. Ten anions, ClO-, CrO4(-2), NO3-, HCO3-, I-, CH3COO-, F-, SO4-, S2O8(-2), and Cl-, were tested for potential interference with the assay. Interferences with quantitation were noted for only CrO4(-2) and S2O8(-2). High concentrations of Cl- interfered with the chromatography. The method had acceptable accuracy, precision, and specificity. 相似文献
73.
The present study is an initial examination of the extent to which the environmental characteristics of bars and social behaviors that women engage in when drinking in this setting are associated with bar-related aggression. As expected, several environmental characteristics (e.g., young patrons, pool playing) and social behaviors (e.g., alcohol consumption, leaving the bar with strangers) were associated with more severe bar-related aggression experienced by women during the past year. These results shed light on the significant problem of bar-related aggression against women and can potentially be used to develop prevention and educational programs. 相似文献
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We report on a sample of 135 deliberate self-harm (DSH) patients who were assessed by a general hospital DSH service, and on those who were offered aftercare by, or telephone open access to, the service. Patients' satisfaction with assessment and treatment, and their outcome were investigated at follow-up 12-20 months later. Four-fifths of patients reported the assessment following DSH to have been helpful and the assessor sympathetic. Thirty-three (24%) of the 135 patients assessed were offered treatment by the DSH service but 13 declined or failed to attend. Of the 20 who engaged in treatment, 17 (94%) were satisfied with their care. Open access to the DSH service by telephone was offered to 53 (39%) patients, nine (22%) of whom reported at follow-up that they had used this facility. A specialist DSH service can effectively assess and treat patients following DSH. It is important that the service is accessible and acceptable to patients. 相似文献
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Gruszecki AC Kloda S Simmons GT Daly TM Hardy RW Robinson CA 《Journal of forensic sciences》2003,48(2):432-434
A 29-year old female with a history of depression was found dead in a hotel room. The death scene investigation found empty pill bottles and an empty liter bottle of wine. Metaxalone, a centrally acting muscle relaxant, along with citalopram, ethanol, and chlorpheniramine were identified in the postmortem samples and quantitated by gas chromatography-mass spectrometry. The concentration of metaxalone in femoral vein blood was 39 mg/L. The heart blood concentration was 54 mg/L. Femoral vein blood concentrations of citalopram and chlorpheniramine were 0.77 mg/L and 0.04 mg/L, respectively. Ethanol levels were 0.13 g/dL in vitreous and 0.08 g/dL in heart blood. Other tissue samples were also analyzed. The authors consider the metaxalone concentrations toxic and potentially fatal. The citalopram concentrations were lower than those reported in fatal cases for this drug alone. Death was ascribed to polydrug abuse/overdose with metaxalone a major contributor. This represents the first reported case to our knowledge in which a metaxalone overdose significantly contributed to death. 相似文献
78.
Diane Ellen Papalia-Finlay 《Journal of youth and adolescence》1978,7(2):133-139
In the present study a two-part animism questionnaire was devised and administered to 200 female undergraduate students who had fairly extensive course backgrounds in science. When these students were asked to classify each of 15 objects as living or nonliving, 67% (N=134) gave evidence of apparent animistic thought. Yet when the subjects were asked to choose which of several statements reflected their own definition of living, 66% (N=132) claimed that only plants and animals are living. Scientific background did not relate to performance on either section of the questionnaire. Results indicate that although the primary orientation of many young adults toward the word living is not a biological one, most college students areable to classify stimuli according to this criterion.Received her Ph.D. in lifespan developmental psychology from West Virginia University in 1971. Primary research interest is cognitive functioning after childhood. 相似文献
79.
Amitai Etzioni Amir Hussain Mohammad H Fadel Jean Bethke Elshtain Stephen Schwartz Joergen Oerstroem Moeller 《Cambridge Review of International Affairs》2008,21(2):159-178
The following is an exchange concerning the concept of ‘illiberal moderates’ and its implications for a new global architecture as well as for a worldview that sees the evolution of a global core of shared values which favour domestic and international security, in sharp contrast to the ‘clash of civilizations’ thesis. The original statement was published in the Cambridge Review of International Affairs (Etzioni 2006). A more extensive treatment can be found in Part III of Security first: for a muscular, moral foreign policy (Etzioni 2007b), which examines texts of four religious and two secular belief systems as well as review of relevant public opinion polls and ‘traveller notes’. Here follows a brief summary of the main thesis, followed by comments from prominent scholars and Etzioni's response to these comments. 相似文献
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