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111.
Jane Hayward 《亚洲研究》2017,49(4):523-545
A high-profile debate is taking place in China concerning the organization of agricultural land and production, with profound implications for China’s countryside. This debate is between those advocating for agricultural production to be taken over by large-scale agribusinesses, and those against this. Proponents regard agribusinesses as embodying modernity and progress, while those against forewarn of the channeling of profits out of peasant hands, the loss of peasants’ autonomy over labor and land, and the destruction of rural life. Recent English language publications on China’s agrarian change highlight the growing power of agribusiness and related processes of depeasantization, implying the Chinese debate on “who will till the land?” is futile. But this view obscures efforts by Chinese scholars and policymakers to promote forms of agricultural organization conducive to maintaining peasant livelihoods. By examining the Chinese debates on agribusinesses, family farms, and cooperatives, this article highlights points of contestation among policymakers and alternative possibilities, which may yet shape the course of China’s agrarian change. This article contributes to scholarship on China’s agrarian change, broader questions concerning depeasantization, and developmental possibilities under collective ownership. 相似文献
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Keith C Ferdinand 《The Journal of law, medicine & ethics》2008,36(3):458-463
Race is not a scientific category, but African Americans have increased prevalence and severity of heart failure. The African American Heart Failure trial showed the benefit of a combination of isosorbide dinitrate (a nitric oxide donor) and hydralazine (an antioxidant). Future research may unmask the reason for cardiovascular differences in therapy. 相似文献
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Conventional development of latent fingerprints is compromised when the prints are decomposed by extreme temperatures, such as those encountered when a weapon cartridge is fired, an improvised explosive device is detonated, and/or in arson cases. Understanding how these extreme temperatures alter the chemical and physical properties of latent fingerprint residue could aid in the discovery of a reagent that could effectively develop these decomposed fingerprints. To mimic scenarios where fingerprints may be exposed to high heat conditions, standards of the five most abundant amino acids in fingerprint residue as well as extracted fingerprint residue were pyrolized under controlled conditions. Compounds identified as pyrolytic decomposition products were 3,6-dimethylpiperazine-2,5-dione (from alanine), maleimide, and 2,5-furandione (from aspartic acid). The pyrograms and selected ion traces show these products to hold promise as indicators of decomposed fingerprint residues and, therefore, may serve as good candidate substrates for a developing reagent. 相似文献
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The characterization of inter-species variation in bone mineral (b-HAP) is of relevance to forensic science and archaeology, but has not previously been widely explored. Results of an investigation into unheated bone mineral and behavior of bone upon heating for 12 animal species (including human) demonstrate that b-HAP characteristics, quantitatively measured using X-ray diffraction (XRD) analysis, exhibit significant inter-species variation. Human bone was found to be significantly different to all other species in terms of b-HAP lattice parameter values from unheated and heated bone and in terms of recrystallization behavior of b-HAP upon heating bone to 600°C. The amounts of b-HAP thermal decomposition products were also significantly different for human bone heated to 1400°C compared to those obtained for most other species. Therefore, there is potential for the development of an XRD-based method of species identification, particularly one that distinguishes human from non-human bone. 相似文献
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Vacuum metal deposition (VMD) is a highly sensitive technique originally introduced for detecting latent fingermarks on smooth non-porous surfaces such as carrier bags, plastics and glass. The current study explores whether VMD can be used in the examination of clothing from physical and sexual assault cases in order to visualise identifiable fingermark ridge detail and/or palmar flexion crease detail, thus allowing potential areas to be indicated for DNA swabbing and/or to determine the sequence of events. Four different fabrics were utilised during this study - nylon, polyester, polycotton and cotton, along with 15 donors who ranged in their age and propensity to leave fingermarks, from good to medium to poor as determined by results obtained from test runs using paper and plastic carrier bags processed with VMD. Once samples were collected they were kept for a determined time (1, 2, 3, 4, 5, 6, 7, 14, 21 or 28 days) and then treated using the gold/zinc metal VMD process. From the results, it appears that greater ridge detail is visible on the smoother non-porous fabrics, such as nylon whereas on rougher porous fabrics, such as cotton, only empty prints and impressions, rather than any ridge details, were visible. All fabrics did however allow the development of touch marks that could be targeted for DNA taping thus potentially leading to a DNA profile and possible identification of a suspect. 相似文献