安徽省桔梗科药用植物资源调查

目的：研究安徽省桔梗科药用植物资源及其开发、利用价值。方法：野外资源调查和标本研究。结果：安徽省桔梗科药用植物共有7属12种3亚种，其中2种1亚种为安徽省分布新记录，另外，还有3个新分类群有待进一步研究。结论：安徽省桔梗科药用植物资源有进一步研究的价值。     

Intellectual property strategies for US security and privacy

Legal context. Some state legislatures are considering billswhich would require those applying for a driver’s licenceto provide one or more biometric identifiers. The US federalgovernment is tending towards eavesdropping on conversationsand investing in data mining efforts while on the other handanti "big-brother" technologies are also emerging to counterthis trend and protect privacy. The demand for technology toprotect privacy will no doubt increase as the demand for defenceand security spending increases. We also live in a world wherebioterrorist acts are a constant threat and therefore demandfor biological detection devices and nanotechnology is growingdaily. Key points. Current technology advances in biometrics, surveillance,biological detection and nanotechnology can be used both toprotect and to jeopardize the security and privacy of individuals.As such, the importance of intellectual property in these areascannot be underestimated. Practical significance. Companies are advised to ‘go onthe offensive’. All companies should aggressively protecttheir core technology in numerous facets such as patent protection,copyright, trade marks and trade secrets. In the high tech arenathis is especially important because the demand for securityand privacy necessitates the development of advanced applicationsand in turn the quality of protectable IP for the companiesthat develop the technology increases. Additionally, companiesshould also pursue an offensive strategy that includes analyzingemerging standards and competitor focus so that they can acquirea competitive advantage or secure cross-licensing of another’stechnology.     

A comparison study of hair examination methodologies

A study was conducted to investigate the accuracy between two methods of hair analysis: PCR-STR DNA analysis and microscopic comparison analysis. Standard sets of pubic hairs were collected from volunteers, and unknown sets were generated from these samples. Three out of five (60%) of the hairs analyzed produced full DNA profiles that were correctly matched to the standard sets. DNA analysis was inconclusive (partial or no DNA profile) for two out of five (40%) of the samples. In contrast, the microscopic comparison analysis correctly matched four out of five (80%) of the samples to the standard sets but mis-identified one out of five (20%) of the samples. These results reinforce the practice of preliminary microscopic hair examination in narrowing down a set of hairs for DNA analysis. Microscopic comparison analysis is sufficiently reliable to remain a rapid and inexpensive method for forensic hair analysis.     

Gunshot residue particle velocity and deceleration

The velocity of over 800 gunshot residue particles from eight different sources was determined using high speed stroboscopic photography (spark gap light source). These particles were found to have an average velocity of 500 to 600 ft per second. Many particles acquired considerably higher velocities. Thus, the particles have sufficient energy to embed themselves within certain nearby targets like skin or fabric. The relatively high velocity that the particles acquire explain the formation of stippling on skin in close proximity to a muzzle discharge. These findings also indicate little influence of air currents on particle behavior near the muzzle. The deceleration of less than 100 particles during a 100-microsecond interval was also calculated. The particles experienced rapid rates of deceleration which would explain why few particles are found in test firings beyond 3 ft from the muzzle of a discharged firearm. Because of their relatively high velocity, normal wind velocity would not be expected to significantly influence their motion near the muzzle.     

Networking to support suicide survivors

This paper is the first report on a national program for increasing bereavement support for suicide survivors in the Flemish region in Belgium. A Working Group consisting of representatives of a wide variety of mental health institutions, social programs, and suicide survivor groups in the area determined that a program developing networks between the services seems to hold the greatest promise for both an increase in the number of services available and an improvement in the quality of services offered.