混合入侵杂草算法用于阵列天线波束赋形

为了克服基本入侵杂草算法在处理高维数复杂问题时收敛速度慢、易陷入局部最优的问题,将简化的二次插值法作为局部搜索方法嵌入到入侵杂草算法中,提出了一种混合入侵杂草算法．该算法利用简化的二次插值法较强的局部搜索能力来增强算法的整体收敛性能,提高收敛速度和计算精度．仿真结果表明,该算法在阵列天线波束赋形问题中,整体性能优于基本入侵杂草算法及其他同类算法．     

介入医学工程现状和发展趋势

介入治疗具有微创性、可重复性、定位准确、疗效高、见效快、并发症少、多种技术联合应用简便易行等优点。介入放射学已经成为与内科学、外科学并驾齐驱的第3治疗学科,主要包括腹部介入放射学、心脏介入放射学、神经介入放射学、妇产介入放射学等分支。综合评述了国内外微创介入治疗器械与材料的现状。详细介绍了心血管、脑血管、外周血管介入医学工程材料及器械的技术开发现状、临床应用及国产化现况,并在客观分析和综合评价后对该领域的未来发展趋势作了展望。     

人体组织液的微创透皮抽取技术

对人体组织液的微创透皮抽取技术进行了研究.首先对皮肤进行低频超声预处理,提高皮肤表层对组织液的通透性,然后利用文氏管真空负压实现组织液的抽取、收集和输运.搭建了低频超声皮肤预处理系统,设计了基于文氏管的真空负压一体化装置,研究了组织液透皮抽取效果的评价方法.通过实验验证了组织液的抽取效果,研究了抽取时机、抽取频率对组织液渗透速率的影响,验证了文氏管真空负压作为组织液抽取、收集和输运驱动力的作用效果,研究了利用真空负压控制液体输运速度的方法.研究成果在微创血糖监测技术中具有重要的应用价值.     

机器人辅助微创手术系统的触诊功能实验

机器人辅助微创手术系统中的触诊功能的实现对提高手术效率,减少术中对非病变组织的创伤有重要意义。针对已研制的机器人辅助微创手术系统中的触诊模块进行性能测试,一是用于测量微器械在手术中夹持器官组织时产生的夹持力的夹持力测量系统,一是用于测量微器械与非夹持器官组织接触时产生的相互作用的接触力的接触力测量系统。通过实验分析了系统的精度和性能,为系统的进一步优化提供依据。     

Effect of mineral matter removal on pyrolysis of wood sawdust from an invasive species

Kinetics of the pyrolysis of wood sawdust from the invasive species Parkinsonia aculeata, untreated and demineralized by a mild acid treatment, is comparatively investigated in order to examine the effect of the removal of minerals naturally present in the biomass. Non-isothermal thermogravimetric analysis from room temperature up to 500°C is applied for this purpose. Demineralization shifts the process onset and the maximum degradation rate to higher temperatures, and leads to enhance the activation energy from 56 to 60 kJ mol^–1, pointing to a catalytic role of alkaline and alkaline earth metals in the biomass. Likewise, the three kinds of pyrolysis products (gas, bio-char, and bio-oil) are obtained from experiments performed in a bench-scale installation at 500°C. Yields and physicochemical characteristics of the pyrolysis products are determined. The pronounced reduction in the content of metals in the sawdust leads to increase bio-oil yield in around 10%, the specific surface area of the bio-char, from ≈ 2 to ≈ 74 m² g^–1, and the higher heating value of all the pyrolysis products.     

Isolation and Characterization of New Microsatellite Markers for the Invasive Softshell Clam, Mya arenaria (L.) (Bivalvia: Myidae)

The invasive softshell clam (Mya arenaria Linnaeus, 1758) is native to the northwestern region of the Atlantic Ocean. This species has been introduced in the northeast Pacific and along the European coasts, due to intense naval transports and aquaculture, and it is now present in all the European seas. In this paper we describe seven new microsatellite loci for Mya arenaria. The isolated loci are polymorphic with a number of alleles per locus between 6 and 14. The observed and expected heterozygosities ranged from 0.417 to 0.951, and from 0.643 to 0.895, with an average of 0.716 and 0.775, respectively. These microsatellite markers should be useful in analyzing this species' genetic diversity, which could explain various processes of its invasion history.     

8%精喹·乳氟禾乳油防除花生田杂草试验

为明确8%精喹·乳氟禾乳油防除花生田杂草的效果和对花生的安全性,采用田间小区试验的方法,观察其对花生田杂草的防效和对花生产量的影响。结果表明,8%精喹.乳氟禾乳油有效成分用量100.0～240.0 g/hm2对花生田马唐、牛筋草、反枝苋、马齿苋等杂草均有好的防治效果,药后20 d,总体株防效为96.45%～99.68%,鲜重防效97.93%～99.83%。对作物花生安全性较好,药后部分叶片出现药害斑,不扩展,可恢复,对花生苗期生长无影响,增产率33.42%～47.33%。     

半导体激光的新应用

半导体激光器（LD）在临床上有着广泛的用途。新型1470nm半导体激光与传统的1.06μm YAG激光相比具有较强的组织吸收率,与10.6μm CO₂激光相比则具有较高的切割效率,适用肿瘤切除,外科手术,腹腔镜手术等微创手术。1470nm半导体激光的能量既能被血红蛋白吸收也能被细胞水吸收,热量能集中在体积很小的组织内,迅速汽化分解组织,在治疗良性前列腺增生和妇科疾病上具有良好的应用前景。     

75%氯吡嘧磺隆防治甘蔗田恶性杂草防除效果试验

为筛选防治甘蔗田恶性杂草的安全和有效药剂,针对甘蔗田间恶性杂草草害发生情况,尤其是香附子对甘蔗生长的影响,利用75%氯吡嘧磺隆进行甘蔗田恶性杂草的田间防效试验。试验结果表明,75%氯吡嘧磺隆主要适用于防除香附子、阔叶杂草和莎科杂草等;75%氯吡嘧磺隆对防除香附子有特效,能杀灭香附子的根和块茎,能起到防除下一茬的作用;75%氯吡嘧磺隆（NC-319）与55%甲·灭·敌WP混用对杂草防除具有普遍性,表现出较好的防除效果。     

Relationship between clinical features of facial dry skin and biophysical parameters in Asians

There have been few reports classifying the biophysical characteristics of Korean women with healthy skin. Consequently, the aim of this study was to find the most useful parameters for categorizing skin types based on a clinical assessment. One hundred and three female volunteers, aged 20-59, participated in this study. We conducted a self-evaluation questionnaire, a clinical assessment of the facial skin, and non-invasive measurements on the cheek under controlled environmental conditions. The questionnaire survey indicated that 72% of respondents had dry skin. However, results of the clinical assessment focusing on skin roughness and scaling of the cheek showed that 6 subjects had very dry skin (6%), 29 had dry skin (28%) and 68 had normal skin with sufficient moisture (66%). We analysed the correlation between the clinical assessment and biophysical parameters. As a result, we obtained six biophysical parameters that had relatively higher correlations with clinical assessment than other parameters. Our study provided general information about the physiological characteristics of normal skin in Korean women and suggested useful parameters for characterizing dry skin.