Allelochemical resistance of bald cypress,Taxodium distichum,heartwood to the subterranean termite,Coptotermes formosanus

The heartwood of bald cypress,Taxodium distichum (L.) Rich., resisted feeding attack by the Formosan subterranean termite,Coptotermes formosanus Shiraki. Hexane-extracted heartwood, however, was consumed at > 12 times the amount of sound heartwood eaten. A bioassay usingT. distichum sapwood as a feeding substrate was employed to assess the antitermitic activity of successive hexane, acetone, and methanol extracts of heartwood shavings and isolates derived from the active hexane extract. Two fractions, eluted from the crude hexane extract by liquid chromatography, significantly reduced termite feeding compared to the parent extract, while a third fraction was less active than the original hexane extract. Each fraction contained one major component. All three components were structurally related diterpenes. The two most active heartwood constituents were identified by GC-MS and NMR as ferruginol and manool, while the third and least active, but most prevalent, compound in heartwood was identified as nezukol. Results of bioassays suggest that these allelochemicals act principally as feeding deterrents with accompanying termite mortality due to starvation.     

烟嘴水松纸用聚乙烯醇缩丁醛树脂油墨连接剂的研制

利用丙烯酸对松香改性,制得水溶性的改性松香增粘剂,再与聚乙烯醇缩丁醛(PVB)共聚制得适合烟用水松纸水溶性油墨连接料,以替代通常的溶剂粘结剂。经检测,该产品具有优良的粘结性能和水溶性。     

复方双柏液熏洗坐浴治疗痔手术后肛门肿痛100例

目的：探讨复方双柏液熏洗坐浴治疗痔手术后肛门肿痛的疗效。方法选择行痔手术的300例患者,按术后坐浴方法的不同分为观察组、对照 A 组、对照 B 组（每组100例）,3组分别采用复方双柏液熏洗、康复新液熏洗、高锰酸钾液熏洗坐浴,对比3组的疗效、创面愈合时间、水肿消失时间、疼痛消失时间及患者满意率。结果对照A 组、对照 B 组、观察组治疗总有效率分别为82％、80％、98％,患者满意率分别为80％、81％、99％,观察组的治疗总有效率及患者满意率明显高于其他2组（均 P ＜0．05）;观察组的创面愈合时间、水肿消失时间、疼痛消失时间均明显少于其他2组（均 P ＜0．05）。结论复方双柏液熏洗坐浴对痔手术后肛门肿痛的治疗疗效确切、安全性好。     

黑色纱线的染色生产实践

分析了活性黑B—ED在传统染色工艺中产生色花的原因，实验表明，在染色时用分段染色法，可以减少色花的产生，新的分段染色工艺使染色纱线的质量提高。     

中国传统私家园林景点题名中的松柏意象研究

中国传统松柏文化源远流长,蔚为大观。深入挖掘中国古典园林中的松柏文化对于弘扬中国优秀传统文化和提升现代园林文化具有重要意义。现有松柏文化研究主要集中在诗词、绘画、民俗等领域,在园林品题领域的研究还不够系统和深入。以历代私家园林中的景点名称为研究对象,采用古籍文献查询和统计分析相结合的方法,对历代私家园林中的松柏景点、景点题名中的常见意象、松柏景题所表达的精神文化内涵进行研究。结果表明：1）唐代及以前私家园林中的松柏景题记载较少,题名意象也非常单一;2）宋元时期虽然记载的松柏景题仍然不多,但是题名意象已经非常丰富;3）明清时期松柏景题的数量最多,题名意象也最为多元;4）历代私家园林松柏景点除直接以松柏名称题名外,以松风意象题名最多,其次是数量意象、岁寒意象、松阴意象等;5）松柏景题的精神内涵主要表达了历代文人对隐逸理想的寄托、高洁人格的追求、佛理禅思的寓意和对健康长寿的企盼。     

基于3G的无线实时视频监控系统设计

设计并实现了一种基于3GWCDMA无线网络的远程视频实时监控系统,该系统以Cypress公司的CY8C52芯片、TI公司的TMS320DM642芯片以及华为公司的EM770W通信模块为核心,融合了嵌入式、视频压缩、无线通信等技术,实现了视频的采集、压缩、传输、解码、显示等功能。该系统还对压缩模块中DSP编码选项和MPEG-4算法进行了优化,减少了运算量,提高了编码效率,使系统的信号处理能力得到了很大改善。     

“桧柏亭”——明代江南园林中的特殊营造

介绍了16世纪的明代江南园林中曾一度常见“桧柏亭”的特殊营造,其不仅被视为建筑景点,而且被赋予深刻的文化意义.这在吴宽宅园中出现原型,在苏州“拙政园”、松江“东庄”中已有成熟体现,并在《遵生八笺》中得到总结.对这一造园细节的现象、意义及其消失原因的探究,可以更细腻、清晰地认识到今日业已消失的明代中期江南园林的特点,以及17世纪的晚明江南园林中所发生的深刻转变.     

柏叶汁饮料的研制

柏叶资源丰富,以柏叶加工的饮料未见文献报道,以柏叶为原料,经浸出、澄清过滤、调配、杀菌可制得一种新型清凉饮料。柏叶在50～70℃,以加0.02%果胶酶及含0.15%柠檬酸的软水为溶剂进行二次浸出,浸出液的澄清经热急冷却或多道硅藻土精滤效果较佳。     

触摸技术在洗衣机中的应用

介绍了触摸技术的发展状况,工作原理以及基于CYPRESS芯片在洗衣机控制器里的应用.论文设计在实际生产中大量应用,取得满意效果.     

137Cs loss via soil erosion from a mountainous headwater catchment in central Japan

Eroded sediment and coarse organic material were sampled for a year at the outlet of the study catchment in central Japan to investigate characteristics of 137Cs loss and to quantify erosional 137Cs loss in a forested headwater catchment. Results showed that loss of both eroded sediment and 137Cs varied markedly according to the magnitude of rainfall events. About 90% of the total sediment delivery and the total 137Cs loss was associated with only two storm rainfall events. The significant contribution of high-magnitude-low-frequency storm events to 137Cs loss from the catchment was emphasized. To quantify the contribution of erosional 137Cs loss to 137Cs cycling, the current mean 137Cs inventory of the study catchment was estimated from direct measurements of 137Cs in soil cores collected from 27 points. The input of 137Cs through litterfall to the soil was estimated from monitoring the annual litterfall of the study catchment. The present 137Cs fallout input was estimated from published 137Cs fallout data. Consequently, the loss of 137Cs associated with eroded sediment was estimated to represent 0.013% of the 137Cs inventory of the study catchment, which is comparable to the input through litterfall. The equivalent value for 137Cs runoff with coarse organic material was estimated as 0.0003%. Therefore, the effect of 137Cs loss in association with coarse organic material on estimates of erosion rate obtained by measuring 137Cs inventories in soil core samples was inferred to be negligible in Japanese cypress plantations. Results confirm the applicability of 137Cs measurements to estimate erosion rates in other relatively stable forested areas.