铜螯合剂对小麦生长和花粉育性的影响(研究简报)

鉴于铜素营养与小麦雄蕊育性关系密切,故有可能利用铜螯合剂使小麦缺铜,从而达到杀雄的目的。[Graham,1986]。本研究旨在明确现有几种铜螯合剂对小麦生育的影响,并分析它们作为小麦杀雄剂的可能性。 1.试验方法和主要结果试验于1987～1989年在浙江农业大学温室旁进行。第一年(1987～1981)主要目的是筛选最有效的铜螯合剂,并研究适宜的使用时期、浓度与方法。冬小麦品种浙农大105播于装有15kg小粉土的盆钵(25cm×30cm)中,播前施饼肥10g,尿素1g,氯化钾0.75g。出苗后删苗至每盆5株。供试的铜螯合剂有苯并三氮唑、鲁必胺酸、新铜铁试剂、吡喀啶二硫代氨基甲酸铵和-安息香肟。处理分4种:1)5种药剂在拔节期土施,用量50mg/kg土;2)苯并三氮唑分播前、分蘖期,拔节期和孕穗期土施,用量同上;3)苯并三氮唑在拨节期和孕穗期分土施与叶面喷施,用量     

改变原料配比提高头孢唑啉酸收率

目的:提高头孢唑啉酸收率。方法:减少原料消耗进行多次不同配比合成头孢唑啉酸。结果:根据实验四氮唑乙酸对收率影响很大。结论:减少四氮唑乙酸的投入量可使头孢唑啉酸收率稳定。     

氢氧化钠在土壤氰化物与总氰化物测定中的影响

对于土壤中氰化物与总氰化物可依据HJ 745-2015使用分光光度法进行测定,该方法使用氯胺T以及异烟酸-比唑啉酮显色剂,受p H影响较大。研究了在测定过程中使用不同浓度的氢氧化钠对溶液显色性能的影响,并确认氢氧化钠最佳浓度范围为0.8g/L~1.0g/L。使用1.0g/L的氢氧化钠溶液替代标准中10g/L的氢氧化钠溶液,对于实际土壤样品进行测定,氰化物与总氰化物的相对误差分别为6.40%和3.80%,加标回收率在90.7~106%和94.0~101%之间。     

RP-HPLC法测定兰索拉唑口崩片的含量

建立反相高效液相色谱法测定兰索拉唑口崩片中兰索拉唑的含量。方法：采用奥泰公司C18色谱柱（284mm×4．6mm,5μm）,甲醇-水-三乙胺-磷酸（640：360：5：1．5,pH为7．3）为流动相,检测波长为284nm,流速为1．0ml／min,柱温为30℃兰索拉唑在6．8-68．0μg·mL^-1范围内呈良好的线性关系（r=0．99995）。兰索拉唑平均回收率分别为100．1％。结论：本法简便、准确,可用于兰索拉唑口崩片中兰索拉唑的含量测定。     

奥美拉唑与其他药物对比治疗胃溃疡的研究进展

本文综述对2015年以来多种药物与奥美拉唑疗效的对比,发现埃索美拉唑、西咪替丁、泮托拉唑、兰索拉唑、雷贝拉唑与奥美拉唑药物治疗胃溃疡的优缺点,为临床诊治提供依据。总结认为不同的药物各有其优缺点,在临床诊治时需结合患者情况合理地用药。     

HPLC测双唑泰泡腾片中甲硝唑和克霉唑

目的：研究双唑泰泡腾片的质量控制方法。方法：采用高效液相色谱法测定双唑泰泡腾片中甲硝唑、克霉唑的含量。结果：双唑泰泡腾片中甲硝唑和克霉唑的浓度线性范围分别为0.2-1.2和0.16-0.9mg.mL-1,平均回收率分别为100.21%（RSD=0.93%）和100.22%（R SD=1.13%）。结论：采用的方法简单、可靠,适用于双唑泰泡腾片的质量控制。     

浅谈兰索拉唑肠溶片工艺及质量研究

兰索拉唑对各种原因引起的胃酸分泌均具抑制作用,具有保护和促进胃粘膜溃疡愈合的作用。本试验以产品质量稳定。性能优于市售产品为指导原则,根据兰索拉唑的理化性质,以崩解时限和释放度作为考察指标,通过交叉试验确定本产品更合理的工艺处方及生产工艺。就兰索拉唑肠溶片工艺及质量展开研究,期望通过本文的研究能够对兰索拉唑肠溶片的推广使用。     

兰索拉唑片稳定性影响因素研究

目的:通过对兰索拉唑片稳定性影响因素的研究,确定兰索拉唑片的贮存条件和有效期。方法:依据《新药(西药)临床前研究指导原则》的规定,并参照中国药典2010年版二部附录ⅪⅩC药物稳定性试验指导原则。结果:兰索拉唑片在高温、高湿和光照的条件下质量较稳定。结论:通过对兰索拉唑片稳定性影响因素研究,确定兰索拉唑片的贮存条件为遮光、密封保存,有效期24个月。     

埃索美拉唑与雷贝拉唑治疗消化性溃疡药物经济学研究

目的:对比埃索美拉唑与雷贝拉唑治疗消化性溃疡药物的临床效果和经济学差异。方法:将在我院接受治疗的100例缺血性脑血管病患者按照随机分组法分为观察组和对照组,各50例。观察组采用雷贝拉唑的治疗方式,对照组采用埃索美拉唑作为治疗方法,比较两组患者临床有效率和经济学差异。结果:观察组总体有效率为88,对照组为86%,两组差异不具有统计学价值(P0.05),并且两组患者的不良事件的发生率也无明显差异(P0.05);观察组成本-效果比为2.05,对照组成本-效果比为8.51。结论:雷贝拉唑和埃索美拉唑治疗消化性溃疡的临床效果比较显著,并且安全性比较高,但是雷贝拉唑的治疗经济意义更优,应该在临床中加以推广。     

高效液相色谱法分析鱼制品中的生物胺

以丹磺酰氯为衍生试剂,建立了反相高效液相色谱法同时测定腐胺、尸胺、酪胺、组胺和精胺5种生物胺的方法．色谱条件为：C18（4．6mmI．D．×150mm,5μm）色谱柱分离,柱温25℃,甲醇和0．1％乙酸溶液为流动相,梯度洗脱,流速0．8mL／min,DAD检测器,检测波长254nm。5种生物胺得到了较好的分离,浓度在0．8μg／mL到80μg／mL时线性相关性良好（r〉0．999）,检测限为0．8μg／mL。检测方法平均回收率为84％～103％．相对标准偏差小于5％。鱼肉在储存过程中生物胺含量呈现逐渐增加的趋势,以腐胺、尸胺、组胺和酪胺为主。     

The Role of Intermediating Institutions in the Diffusion of Electronic Data Interchange (EDI): How Industry Associations Intervened in Denmark, Finland, and Hong Kong

Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies.     

Prevalence of soft neurological signs in Chinese people

Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.     

Students' Reactions to the Introduction of Videoconferencing for Classroom Instruction

This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors.     

中国叶下珠亚科植物资料

The present paper is part of taxonomic study on Chinese Phyllanthoideae. Inclu- ded in it are two new varieties, Leptopus esquirolii var. villosus and Drypetes hainanensis var. longistipitata, one new combination, Glochidion triandrum var. siamense, and seven new re- cords in China: Drypetes salicifolia, D. hoaensis. Actephila subsessilis, Glochidion khasicum, G. nubigennum, Bridelia spiosa and B. poilanei.  In addition, seventeen taxon names are new- ly reduced: Liodendron formosanum = Drypetes formosana, Liodendron matsumurae = Dry- petes matsumurae, D. longipes = D. indica, Antidesma paxii = A. acidum, A. hiiranense, A. filipes and A. pentandrum var. hiiranense = A. japonicum, A. calvescens = A. montanum, A. microphyllum = A. venosum, Breynia stipitata var.  formosana and B. jormosana  =  B. vitis-idaea, Glochidion zeylanicum var. tomentosum = G. hirsutum, G. rubidulum = G. thom- sonii, G. acuminatum = G. triandrum, G. fagifolium and Phyllanthus fagifolius = Gloc- hidion sphaerogynum, Bridelia penangiena = B. insulana, B. henryana = B. tomentosa.  All the types are kept in SCBl and PE.     

Rough Justice: A Statistical Assessment of ICANN's Uniform Dispute Resolution Policy

Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP.     

How LINCs Were Made: Alignment and Exclusion in American Medical Informatics

Electronic computers in information systems are often seen as "ready-to-use" technology, which simply becomes applied to certain domains. This article explores the sociotechnical processes involved in the development of information systems by studying two cases of medical informatics, the Laboratory Instrument Computer (LINC) and a medical information system at a hospital. They show that information systems have from the beginning been a result of multiple alignment processes between the relevant actors, among which are users, developers, and the technology itself. The first case reveals that information systems are successful when actors become aligned and coordinated across boundaries. This alignment includes user interfaces as well as parts and components of the computer. The second case exhibits disalignment between relevant actors, which leads to an unstable information system. The two mechanisms are found coexisting in medical informatics.     

How Electronic Publishers are Protecting Against Piracy: Doubts About Technical Systems of Protection

The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means.     

Optimized frequency-based foundation design for wind turbine towers utilizing soil-structure interaction

This study illustrates design optimization for multiple wind towers located at different villages in Alaska. The towers are supported by two different types of foundations: large mat or deep piles foundations. Initially, a reinforced concrete (RC) mat foundation was proposed. Where soil conditions required it, a pile foundation solution was devised utilizing a 30 in thick RC mat containing an embedded steel grillage of W18 beams and supported by 20-24 in grouted or un-grouted piles. For faster installation and lower construction cost, all-steel foundations were proposed for these remote Alaska sites. The new all-steel design was found to reduce the natural frequencies of the structural system due to softening the foundation. Thus, the tower-foundation system could potentially become near-resonant with the operational frequencies of the wind turbine. Consequently, the likelihood of structural damage or even the collapse is increased.A detailed 3D finite-element model of the tower-foundation-pile system with RC foundation was created using SAP2000. Soil springs were included in the model based on soil properties obtained from the geotechnical investigation. The natural frequency from the model was verified against the tower manufacturer analytical and experimental values. When piles were used, numerous iterations were carried out to eliminate the need for the RC and optimize the design. An optimized design was achieved with enough separation between the natural and operational frequencies. The design successfully avoids damage to the structural system, while eliminating the need for any RC in most cases.     

文化的困惑与思考

文明是文化的静态表现形式,文明之忧思的实质是文化之困惑.两种典型的哲学文化理解都有其局限和不足.由对文化定义和功能的分析可见,有序是文化的基本特征,文化是社会秩序之源.社会生活中的各种无序现象和行为从性质上看不是文化现象而是反文化现象.反文化现象的发生有其内在根据.思想史上,对反文化的警惕与质疑作为文化之困惑由来已久,当下更是有深入思考的必要与可能.     

广东竹类新植物

Six new taxa of the Bambusoideae are described from Guangdong Pro- vince, China. They are Indosasa suavis W. T. Lin et Z. J. Feng, Phyllostachys purpureomaculata W. T. Lin et Z. J. Feng, Arundinaria quadrangula W. T. Lin et Z.  J.  Feng,  A.  pubiannula W.  T.  Lin et Z.  J.  Feng,  Gelidocalamus albopubescens W. T. Lin et Z. J. Feng, and Sasa duplicata W. T. Lin et Z. J.Feng.