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African-American Women＇s Perceptions of Constitutive Meanings of Good hair Articulated in black hair Magazine Advertisements

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Journalism and Mass Communication 2012年第1期2卷 279-293页

作者： Eletra S. Gilchrist Courtney Thompson The University of Alabama in Huntsville USA

hair has historically reflected material consequences in the black community; thus, research has begun to investigate how the power/privilege matrix that is propagated throughout the media permeates society and impacts African-Arnerican women＇s perceptions of hair. This research joins the discussion by exploring how black hair magazine advertisements influence black women＇s hair decisions and their percepfious of what constitutes beautiful black hair. Findings reveal that the images African-American women consume from black hair magazine advertisements do impact what they consider to be beautiful and, subsequently, influence their day-to-day styling and hair care mechanisms, lending further support to the idea that the media serve as powerful sources of knowledge. This study culminates by theorizing about the constitutive meanings and importance of black hair as conveyed through magazine advertisements and considers how black women use social comparisons to make everyday hair decisions to achieve what they identify as good hair.

关键词： body politics hair politics social comparison theory black hair magazine advertisements

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Current status of hair analysis in forensic toxicology in China

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Forensic Sciences Research 2021年第4期6卷 240-249页

作者： Hui Yan Ping Xiang Min Shen Department of Forensic Toxicology academy of Forensic scienceshanghai Key Laboratory of Forensic Medicineshanghaichina

hair analysis has been mainly used to document drug use history in abusers,drug-facilitated crime cases,doping control analysis and postmortem toxicology in the fields of forensic toxicology,clinical toxicology,and doping *** analysis has also gained more attention in the last 30 years in *** technology has been promoted as more research has appeared concerning hair analysis,and consensus has been sought among forensic toxicologists regarding aspects such as hair decontamination treatment,detection of abused substances in hair,segmental hair analysis and interpretation of analytical ***,there are still some limitations in the estimation of drug intake time and frequency by segmental hair analysis due to the different growth cycles evident within a bundle of hairs,the drug incorporation mechanism and sampling *** and imaging mass spectrometry(iMS)technology based on a single hair may be a good choice to estimate drug intake time more *** of hair root samples may also be used to document acute poisoning in postmortem toxicology,and the analysis of the hair shaft can document long-term use of drugs depending on the length of the hair being evaluated.

关键词： Forensic sciences forensic toxicology hair analysis black hair drug abuse microsampling imaging mass spectrometry

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