Offshore assembly and NIC-manufactured exports to the United States: Changing correlates of success

Comparative studies of the NICs usually show that their success at exporting manufactures to the North is unrelated to the role of intrafirm trade and subcontracting in their exports, since in some very successful NICs intrafirm trade has played a small and diminishing role. This study explores hyptheses suggesting why intrafirm trade and subcontracting may become more important factors in NIC exports because of the changing composition of their exports, changing technology, and developed country protectionism. Data on the share of eight developing countries' manufactured exports to the United States under offshore assembly provision (OAP) item 807.00 are tested for their changing importance to export growth over the period 1970 to 1984. For all NICs, the share of their exports to the United States under OAP became more positively related to export performance in the 1980s than it had been in the 1970s. For Asian NICs, non-OAP exports continued to outperform OAP exports.     

Constituency characteristics and legislative preferences

An important concern for testing any theory of legislative politics is how to measure legislative preferences. No existing measures are immune to criticism, so sound advice should be based on a balanced assessment of various types of measures. This study focuses on the ability of constituency characteristics to predict Senate roll call votes. Even in the best possible case, constituency-characteristic measures are shown to be deficient both absolutely and relative to supposedly crude, vote-based measures which as ADA ratings. The implication is that constituency-characteristic measures are inappropriate as direct measures of legislative preferences. However, the possibility remains that for some applications they are useful indirect measures, e.g., as right hand side variables that covary with legislative behavior of interest.     

Thermal degradation analysis of amino acids in fingerprint residue by pyrolysis GC-MS to develop new latent fingerprint developing reagents

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.     

Fixed-dose isosorbide dinitrate-hydralazine: race-based cardiovascular medicine benefit or mirage?

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.     

Inter-species variation in bone mineral behavior upon heating

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.     

Visualisation of fingermarks and grab impressions on fabrics. Part 1: gold/zinc vacuum metal deposition

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.