狮子座流星雨及其观测

详细论述了狮子座流星雨形成的原因以及历史上观测的概况。针对天文爱好者，指出流星雨的观测方法和注意事项，并对１９９９年发生的狮子座流星雨进行全面回顾。     

Expression of hepatitis B surface antigen gene (HBsAg) in Laminaria japonica (Laminariales, Phaeophyta)

A transformation model for Laminaria japonica was established from 1993 to 1998, on the basis of which the transgenic kelp with heterologous gene encoding hepatitis B surface antigen (HBsAg) was obtained by using the microparticle bombardment transformation method. Results of quantitative ELISA showed that HBsAg in transgenic kelp was 0.529 μg/mg soluble proteins on average and the highest value was 2.497 μg/mg, implying that recombinant HBsAg had natural epitope. Further support for the integration of HBsAg gene into kelp genome was obtained by PCR-Southern and total DNA hybridization. Prospect of kelp bioreactor producing high value materials such as edible HBV vaccine was discussed as well.     

Ouyang型非线性积分不等式的推广

对Pachpane BC(1995)、Yang Enhao(1998)和李文荣(2000)给出的推广的Ouyang积分不等式作进一步研究,给出了两个更广泛的Ouyang型非线性不等式及其应用．     

关于Ou-Iang型非线性积分不等式

对Pachpatte（1995）和YangEnhao（1998）中以及李文荣（2000）给出的Ou-Iang积分不等式作进一步研究,给出了2个更具广泛意义的Ou-Iang型非线性不等式并给出例子说明其应用．     

深圳河口潮间带泥滩多毛类的数量变化及环境影响

1996年1月至1998年12月在深圳河口潮间带泥滩获得多毛类25种,隶属15科23属,多毛类优势种为羽须鳃沙蚕（Dendronereis pinnaticirrus）、腺带刺沙蚕（Neanthes glandicincta）、尖刺缨虫（Potamilla acuminata）、独毛虫（Thar yx sp.）寡鳃齿吻沙蚕（Nephtys oligobranchia）和大小头（Capitella capitata）,A断面多毛类生物量的季节变化为每年4月（春季）最高,10月（秋季）最低,RB断面的多毛类从1996年7月起,以及ET断面的多毛类从1997年7月至1998年4月,均处于密度和低生物量状态,根据不同时间内多毛类优势种、密度和生物量的比较,判断了多毛类栖息环境受扰动状况,A和ET断面1997年10月至1998年10月、RB断面1996年7月至1998年10月均受到污染扰动。     

无等待流水调度问题迭代启发式算法

针对以总完工时间最小化为目标的无等待流水调度问题(缩写为NWFSP),提出了两个迭代启发式算法(缩写为IHA1、IHA2).一个是以FL(described by Framinan and Leisten,OMEGA,2003)启发式算法产生的解作为初始解,另一个是以WY(described by Hoon-shik Woo and Dong-soon Yim,Computers & Ops Res,1998)启发式算法产生的解作为初始解,然后两者均应用RZ(developed by Rajendran and Ziegler,European Journal of Operational Research,1997)和FL插入以及成对交换技术进行多次迭代来改善解的质量.为了评估,我们使用了Taillard's基准程序随机产生了大量实例,实验结果显示,IHA1和IHA2在解的性能上优于经典的RC1、RC2、PH1(p)算法,随着问题规模的增大,对解的质量改善得更好.     

统计方法在核电站周围环境监测分析中的应用

对1988－1998年大亚湾核电站周围环境的放射性监测数据通过多元回归模型和计算机模拟，研究他们之间的内在规律性，研究结果表明，用统计方法对核电站周围环境监测数据的分析是有效的。     

利用GMS—5红外资料进行云的分类识别

利用GMS－5 3个红外通道（2个分裂窗区通道和1个水汽通道）的亮温资料，依据各种云不同的辐射特征对其进行分类，由此识别出积雨云（Cb）、浓积云（Cg）、卷云（Ci）、积云（Cu）、中云（Cm）、密云（Dense）等6种主要云类以及雾（Fog）和晴空区域。结合安徽寿县地面观测基准站1998年6、7月份的地面观测资料，对分类结果进行了检验，得到了较为令人满意的结果，准确率接近70％。     

呼和浩特市城市基准地价发展趋势灰色预测

以1998-2003年呼和浩特市城市综合用地基准地价资料为基础,经数据处理,得到以2001年地价级别为基准的不同年份各级别的基准地价,以此为原始数据,应用灰色系统理论构建GM(1,1)模型,经模型精度检验后,预测了呼和浩特市2004-2007年城市综合基准地价,并对预测结果进行分析．     

速溶乌龙苦丁茶的生产性试验

本文报道速溶乌龙苦丁茶生产性试验的工艺及条件 ;生产的产品各项质量指标经检测均符合广东省企业产品标准 Q/JDF0 1 _ 1 998     

Expression of hepatitis B surface antigen gene (HBsAg) in Laminaria japonica (Laminariales, Phaeophyta)

A transformation model for Laminaria japonica was established from 1993 to 1998, on the basis of which the transgenic kelp with heterologous gene encoding hepatitis B surface antigen (HBsAg) was obtained by using the micro- particle bombardment transformation method. Results of quantitative ELISA showed that HBsAg in transgenic kelp was 0.529 μg/mg soluble proteins on average and the highest value was 2.497 μg/mg, implying that recombinant HBsAg had natural epitope. Further support for the integration of HBsAg gene into kelp genome was obtained by PCR- Southern and total DNA hybridization. Prospect of kelp bioreactor producing high value materials such as edible HBV vaccine was discussed as well.     

Concentration and flux of bioaerosol and environmental factors

The concentration and flux transportation of bioaerosol are analyzed using the data observed in Nanjing in July 1998. Some results are obtained: (i) the concentration and flux transportation of bioaerosol vary periodically with the cycle of the solar radiation and atmospheric turbulent intensity, (ii) The bioaerosol concentration is affected by both the bioaerosol flux transportation and the environmental factors. The bacterial concentration is obviously affected by the solar radiation while the fungi concentration is significantly affected by temperature.     

基于集成预测模型的贵州省农作物受灾面积预测

本文根据1998-2011年贵州省农作物受灾面积统计数据,利用集成预测模型,得到贵州省农作物受灾面积的预测模型,通过将农作物受灾面积的拟合值与真实值作比较,证实模型的拟合效果较好,进一步对贵州省2012年农作物受灾情况进行预测。     

青海省水利建设管理问题探讨

总结了1998年以来青海省水利建设管理中取得的成绩，指出了水利建设管理中存在的问题，并对今后的发展方向进行了探讨。     

Modified fiber qualities of the transgenic cotton expressing a silkworm fibroin gene

A silkworm gene for fibroin was introduced into the upland cotton WC line by Agrobacterium-mediated transformation. PCR detection for fibroin, nptII and gus genes, Kanamycin (Km)-resistance analysis and GUS-histochemical assay were conducted on 30 regenerated plants from 9 callus lines, and 17 positive plants were obtained by these 5 screening methods. By Km-resistance analysis and PCR for fibroin, 6 homozygous lines in T₃ were obtained. Southern blot and Northern bolt demonstrated that the fibroin gene was inserted into the genome of these 6 lines, stably inherited and expressed. Compared to the control, the surface structure of mature fiber in the 6 lines was significantly distorted and an increased number of convolution was observed by scanning electron microscopy (SEM). Fiber quality traits analysis indicated that fiber elongation of the 6 homozygous lines was all increased and fiber strength of 3 lines was enhanced. These results indicated that fibroin expression influenced cotton fiber structure and quality, suggesting that fibroin has great potential for improving cotton fiber quality by genetic engineering. Supported by National High Technology Research and Development Program of China (Grant No. 2006AA100105), Science & Technology Pillar Program of Jiangsu Province (Grant No. BE2008310) and Programme of Introducing Talents of Discipline to Universities (Grant No. B08025) Contributed equally to this work     

上海地区可持续发展状况的生态痕迹评价

应用Wackernagel等提出的生态痕迹概念和方法对上海地区1985－1999年的生态痕迹进行了分析和计算。结果表明,上海地区1998年人均生态痕迹1.95hm^2,人均生态迹字1.85hm^2,其中化石能源用地比例占50％以上,通过对生态痕迹方法的应用,讨论了其优点与不足。     

玉柏石松化学成分的研究

采用正相、反相硅胶柱色谱法对玉柏石松的非生物碱成分进行了分离和纯化,从中分离得到了2个化合物,通过NMR技术鉴定其结构分别为3α-乙酰氧基豆甾烷-21-羧酸(1)和二萜柳杉酚(2),且化合物2为新的甾体化合物,化合物2为首次从该植物中分离获得的二萜化合物.     

枯草芽孢杆菌麦芽糖诱导型启动子Pglv-M1的改造

通过定点突变对麦芽糖诱导型启动子Pglv-M1进行改造,提高启动子启动能力。分析Pglv-M1的Sextama-35区与Pri-bmow-10区,通过对这些区域模拟随机突变,软件打分后获得最高分的新片段。将新启动子与载体p HCMC04-sva连接,并在枯草芽孢杆菌Bacillus subtilis 1A857中诱导表达,每12 h取粗酶液进行酶活测定。研究结果表明:除突变启动子Pglv-35以外,其余突变体启动效果均有所下降,有突变体构成的表达载体Pglv-35-pHCMC04-sva诱导表达后,得到的单位粗酶活力最高点出现在36 h处,较突变前提高1.31倍。PglvM1作为诱导型启动子Pglv的改造产物,其各个区域的相互影响较为紧密。通过对启动子关键区域单独或同时突变,仅获得一组启动能力有所提高的启动子Pglv-35,这为今后针对启动子的思考、研究方向提供参考。     

Two-parameter vector-valued martingales and geometrical properties of Banach spaces

We obtained a number of inequalities and laws of large numbers for two-parameter vector-valued martingales. In the other direction we characterizedp-smoothness andq-convexity of Banach spaces by using these inequalities and laws of large numbers for two-parameter vector-valued martingales. Biography: CHENG Ri-yan (1968-), male, Master, now works in Department of Mathematics, Fujian Normal University, Fuzhou 350007, China, His current research interest is in random processes.     

与低空急流相伴的暴雨天气诊断分析

 对1998年5月～2002年5月7例与低空急流相伴的云南全省性暴雨过程进行了合成诊断分析.结果表明:临近暴雨发生时,西南低空急流的形成应是云南暴雨产生的主要原因,暴雨天气通常出现在低空急流北侧风矢呈气旋性弯曲、风速递减的梯度十分明显的区域内;低空急流对于水汽和能量的输送起非常重要的作用,它一方面为暴雨的产生提供了所需要的大量水汽,另一方面又使得暴雨区低层大气增湿增暖,从而引起对流不稳定加强,为暴雨的发生提供大量的不稳定能量.湿位涡分析表明,暴雨发生前,冷暖空气在云南交汇,使大气温湿结构发生变化,θ_e等值面坡度加大,当低空急流移向对流不稳定区时,便有气旋性涡度剧烈发展,导致暴雨天气的发生.