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This study takes the first step toward in situ analysis of powder drugs which does not require any alteration of the samples. A fast, inexpensive analytical method based on reflectance near-infrared (NIR) spectrometry and multivariate calibration was applied. A diode-array fiber-optic portable spectrometer in the 900-1700 nm range was employed. Samples were laboratory-prepared ternary powders (diacetylmorphine, caffeine, and paracetamol). Partial least squares regression was applied. The choice of the standard samples for calibration and validation was performed through a D-optimal experimental design. The explained variance was higher than 90%, and the relative root mean square errors were <2%. The number of principal components (6) was very low when compared with the number of raw variables (356 absorbance values). Response plots showed slopes and intercepts were very close to optimal values. Correlation coefficients ranged between 0.909 and 0.989. The method here proposed proved to be competitive with Fourier transform NIR spectrometry. 相似文献
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Inga Tidefors Hans Arvidsson Sara Ingevaldson Michael Larsson 《Journal of Sexual Aggression》2013,19(3):347-360
Abstract Few previous studies have explored the characteristics and dynamics of adolescent sibling incest. The objectives of this paper were twofold: first, to conduct a literature review that accounts for earlier research in the area, and secondly, to conduct a clinical study to explore differences regarding the characteristics of a group of adolescent sibling incest offenders (n=21) compared to a group of adolescent non-sibling offenders (n=24). Comparisons were made regarding variables such as family dysfunction, the offenders' prior victimization and offending behaviour. The data were derived from intake assessment files and semi-structured interviews with 45 adolescents who had sexually offended. The sibling incest offender group had grown up more often in dysfunctional families. Moreover, the results indicated that the offending behaviour in the sibling incest group was more severe. The study gives some empirical support for the possibility that sibling incest can be one sign, among others, of maltreatment during childhood. 相似文献
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China is currently not only the most populous country on earth, but also the world's largest greenhouse gas (GHG) emitter. As China's population growth continues contributing to the overall global population increase, the country remains a significant player in the global problems related to climate change. The Chinese government, however, has recognized that a low-carbon economy is in the country's long-term economic and social interests and this is now a key part of its national development strategy. This paper examines the evolution of policies for sustainability in China and explores their compositions, functions and operational mechanisms. Some emerging features and trends in China's development model are examined, arguing that they represent a clear shift towards sustainability. Further problems and challenges associated with this change and how they impact on China's policies and strategies are also discussed. 相似文献
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The reinvention of nationhood in theory and thereform of British naturalization rules in praxis have been unableto address satisfactorily the issue of unjust exclusion andto make naturalization law and citizenship more compatible withdemocratic ideals. This has much to do with the fact that thediscourse of new patriotism and the reconfiguration of nationalcitizenship have inbuilt limits. In examining the newdiscourse of patriotism in its various shades, I argue thatit is inconsistent and unpersuasive. Neither the rehabilitationof civic nationalism under republican patriotism,nor constitutional patriotism, nor rootedpatriotism succeed in transforming the nationality modelof citizenship in order to render it more compatible with contemporarydevelopments and with cultural pluralism. Similarly, the threemodels of citizenship developed by the literature, namely, postnational,transnational and multicultural citizenship remain rooted withinthe civic nationalist trajectory. Instead of arguing for theliberalization of naturalization requirements and the ensuingpluralization of citizenship, I put forward an argument as tohow the nationality model of citizenship might be transcendedby developing a model of civic registration. By contrastingthis model with the Labour Governments reforms in thefields of naturalization and citizenship, I argue that the Nationality,Immigration and Asylum Act 2002 places too much emphasis onsocial cohesion, thereby overlooking that a sense of belongingto community develops with inclusion in society and politicsrather than as a result of citizenship ceremonies and languageproficiency tests. 相似文献
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Allele frequency data for the 15 STR systems and Amelogenine were determined in a population sample of healthy Mestizo unrelated individuals. All loci met Hardy-Weinberg expectations and the high discrimination power of combined system showed the forensic efficiency of these genetic markers. There is a lack of information on Ecuadorian population from a genetic point of view and therefore no previous publications on the distribution of STRs on Mestizos is available. Mestizos are descendents of Spanish and Amerindian people, however, significant differences were found between the former and the populations from Spanish peninsula, that have been analyzed for these genetic markers. 相似文献
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Inga Dora Sigfusdottir Bryndis Bjork Asgeirsdottir Gisli H. Gudjonsson Jon Fridrik Sigurdsson 《Journal of youth and adolescence》2008,37(6):699-712
Drawing on Agnew’s general strain theory, we examined whether depressed mood and anger mediated the effects of sexual abuse
on suicidal behavior and delinquency. Participants included 9,113 students attending high schools in Iceland. Structural equation
modeling showed that, while controlling for family structure and parental education, being exposed to strain in the form of
sexual abuse was positively related to both depressed mood and anger. The effects of sexual abuse on suicidal behavior of
both boys and girls were twice as strong through depressed mood as through anger. The effects of sexual abuse on outwardly-directed
forms of delinquency for both genders were stronger through anger than through depressed mood. These findings highlight the
complex nature of the effects of strain on adolescents’ emotions and behavior. Moreover, they show that depression—in contrast
to outwardly-directed delinquency, where feelings of anger are predominantly influential—is more relevant than anger to suicidal
behavior.
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Inga Dora SigfusdottirEmail: |