mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Recent Progress in Studies of Climate Change in China

An overview of basic research on climate change in recent years in China is presented. In the past 100 years in China, average annual mean surface air temperature (SAT) has increased at a rate ranging from 0.03℃ (10 yr)~(-1) to 0.12℃ (10 yr)~(-1). This warming is more evident in northern China and is more significant in winter and spring. In the past 50 years in China, at least 27% of the average annual warming has been caused by urbanization. Overall, no significant trends have been detected in annual and/or summer precipitation in China on a whole for the past 100 years or 50 years. Both increases and decreases in frequencies of major extreme climate events have been observed for the past 50 years. The frequencies of extreme temperature events have generally displayed a consistent pattern of change across the country, while the frequencies of extreme precipitation events have shown only regionally and seasonally significant trends. The frequency of tropical cyclone landfall decreased slightly, but the frequency of sand/dust storms decreased significantly. Proxy records indicate that the annual mean SAT in the past a few decades is the highest in the past 400-500 years in China, but it may not have exceeded the highest level of the Medieval Warm Period (1000-1300 AD). Proxy records also indicate that droughts and floods in eastern China have been characterized by continuously abnormal rainfall periods, with the frequencies of extreme droughts and floods in the 20th century most likely being near the average levels of the past 2000 years. The attribution studies suggest that increasing greenhouse gas (GHG) concentrations in the atmosphere are likely to be a main factor for the observed surface warming nationwide. The Yangtze River and Huaihe River basins underwent a cooling trend in summer over the past 50 years, which might have been caused by increased aerosol concentrations and cloud cover. However, natural climate variability might have been a main driver for the mean and extreme precipitation variations observed over the past century. Climate models generally perform well in simulating the variations of annual mean SAT in China. They have also been used to project future changes in SAT under varied GHG emission scenarios. Large uncertainties have remained in these model-based projections, however, especially for the projected trends of regional precipitation and extreme climate events.
PAPP2C Interacts with the Atypical Disease Resistance Protein RPW8.2 and Negatively Regulates Salicylic Acid-Dependent Defense Responses in Arabidopsis

Many fungal and oomycete pathogens differentiate a feeding structure named the haustorium to extract nutrition from the plant epidermal cell. The atypical resistance (R) protein RPW8.2 activates salicylic acid (SA)-dependent, haustorium-targeted defenses against Golovinomyces spp., the causal agents of powdery mildew diseases on multiple plant species. How RPW8.2 activates defense remains uncharacterized. Here, we report that RPW8.2 interacts with the phytochrome-associated protein phosphatase type 2C (PAPP2C) in yeast and in planta as evidenced by co-immunoprecipitation and bimolecular fluorescence complementation assays. Down-regulation of PAPP2C by RNA interference (RNAi) in Col-0 plants lacking RPW8.2 leads to leaf spontaneous cell death and enhanced disease resistance to powdery mildew via the SA-dependent signaling pathway. Moreover, down-regulation of PAPP2C by RNAi in the RPW8.2 background results in strong HR-like cell death, which correlates with elevated RPW8.2 expression. We further demonstrate that hemagglutinin (HA)-tagged PAPP2C prepared from tobacco leaf cells transiently transformed with HA-PAPP2C possesses phosphatase activity. In addition, silencing a rice gene (Os04g0452000) homologous to PAPP2C also results in spontaneous cell death in rice. Combined, our results suggest that RPW8.2 is functionally connected with PAPP2C and that PAPP2C negatively regulates SA-dependent basal defense against powdery mildew in Arabidopsis.
Carbon nanotubes coated with platinum nanoparticles as anode of biofuel cell

A hybrid system of carbon nanotubes(CNTs)coated with poly(amidoamine)(PAMAM)dendrimerencapsulated platinum nanoparticles(Pt-DENs)and glucose oxidase(GOx)was prepared through the layer-by-layer(LbL)self-assembly approach and then used as anode in enzyme-based biofuel cells(BFCs). The assembly process was monitored by-potential measurement,and the as-resulted Pt-DENs/CNTs nanocomposites were characterized by transmission electron microscopy(TEM).The performance of electrodes modified by Pt-DENs/CNTs was also investigated by electrochemical impedance spectroscopy (EIS)and cyclic voltammetry(CV).We found that the Pt-DENs/CNTs could enhance the electron transfer between the redox centers in enzyme and the electrode surfaces.Furthermore,by employing the Pt-DENs/CNTs modified electrodes as anode,the enzyme-based BFCs operated in a solution containing glucose generated an open-circuit voltage of approximately 640.0 mV and a maximum current density of about 90.0 A/cm2,suggesting that Pt-DENs/CNTs may serve as an alternative anode to previously used noble metals in BFC applications.
Effects of local vegetation and plantation age for the parasitoid Asecodes mento- a biocontrol agent in organic strawberry fields

The parasitoid Asecodes mento (Walker, 1839) (Hymenoptera: Eulophidae) is the most important biocontrol agent of the strawberry leaf beetle Galerucella tenella (L.) (Coleoptera: Chrysomelidae) in northern Europe. Here, I investigated whether natural parasitism in organic strawberry plantations was affected by the presence of the alternative host plant meadowsweet (Filipendula ulmaria), and whether parasitism rates differed between plantations of different ages (6 to 79 years). I also investigated whether parasitoid brood size, body size and sex ratio differed between the two host plants in the field. Parasitism was very low (0%) in newly established plantations and increased to a plateau (～40%) in fields where strawberries had been grown for approximately 20 years or longer. Such an extended colonization process is unacceptable for commercial growers. It would thus be desirable to find a method to catalyze parasitoid population buildup in young plantations. Parasitoid brood sizes were larger in beetles collected from meadowsweet, while body size and sex ratio did not differ between parasitoids collected from the two plants. These findings suggest that meadowsweet can export parasitoids to neighboring strawberry fields. Although this is a possibility, I did not find any significant differences in parasitism rates between isolated strawberry fields and fields adjacent to meadowsweet stands, indicating that effects of local vegetation are small on parasitism rates. Releasing parasitoids in newly established strawberry plantations may be a better strategy for quickly obtaining high parasitism than intercropping with meadowsweet.
Age at reproductive maturity and effect of age and time of day on sex attraction in the potato psyllid Bactericera cockerelli

The potato psyllid, Bactericera (= Paratrioza) cockerelli (Sulc) (Hemiptera: Triozidae), is a major pest of potato. Studies were conducted to determine the age at which both males and females reach reproductive maturity and the effect of age and time of day on sex attraction. Adult B. cockerelli reach reproductive maturity within 48 h post-eclosion, with females being mature on the day of eclosion and males at 1 day post-eclosion. Oviposition generally began 2 days after mating but was delayed when females mated within 2 days post-eclosion. In laboratory olfactometer assays, the age of females used as odor sources and the age of males assayed to these odors did not affect sex attraction, with both younger (1-4-day-old) and older (8-10-day-old) males being attracted to females, regardless of female age (1-4-day-old or 8-10-day-old). Males assayed to live females at different times during the photophase (between 8:00 and 20:00 hours) were attracted to females between 11:00 and 17:00 hours, showing a temporal periodicity in sex attraction with B. cockerelli at least during the photophase.
The Maternal-to-Zygotic Transition in Higher Plants

During early embryogenesis in mammals and higher plants, the maternal-to-zygotic transition (MZT) marks the turnover of developmental control from maternal products to de novo zygotic genome transcripts. Intensive studies in animals indicate that early embryonic development is largely maternally controlled. In recent years, the MZT has drawn the attention of botanists, as it is important for understanding the mechanism of embryogenesis and hybrid vigor. In this study, we present a brief overview of some aspects of the MZT in flowering plants. Based on what we have learned from Nicotiana tabacum, we hypothesize that the MZT occurs before zygotic cell division and that the development of the fertilized egg cell in flowering plants can be divided into two phases: the zygote stage, which is mainly controlled maternally, and the one-celled proembryo stage, in which zygotic genome activation (ZGA) occurs and is required for zygote division.
Coalbed methane genesis, occurrence and accumulation in China

Coalbed methane (CBM) is an important type of unconventional gas. Commercial development of CBM in America has been very successful since the 1980s. The CBM industry in Australia and Canada has developed rapidly during the last decade. Commercial development of CBM in China started in the 1990s, and has made great progress. The geological theory of CBM in China has achieved great advancement in genesis, occurrence and accumulation. On the aspect of CBM genesis, five CBM genetic types (primary biogenic gas, secondary biogenic gas, thermal degradation gas, pyrolysis gas and mixed gas) are identified by studying the geochemical characteristics of CBM, and a tracing indicator system is established. The discovery of secondary biogenic gas in medium-high rank coal reservoirs has widened the potential of CBM resources. On the aspect of CBM occurrence, the gas adsorption regulation under combined action of temperature and pressure is revealed by conducting adsorption experiments of different coal ranks under varying temperature and pressure conditions. Besides, by applying the adsorption potential theory in CBM research, the adsorption model under combined action of temperature and pressure is established. The new model can predict CBM resources accurately, and overcome the limitation of the traditional Langmuir model which uses just a single factor to describe the adsorption characteristics of deep buried coal. On the aspect of CBM accumulation, it is proposed that there are three evolutionary stages during CBM accumulation, including gas generation and adsorption, unsaturated gas adsorption, gas desorption-diffusion and preservation. Controlled by tectonic evolution, hydrodynamics and sealing conditions, CBM tends to be regionally enriched in synclines. Advances in geological theory of CBM in China can not only improve understanding of natural gas, but also provide new ideas for further exploration of CBM.
The Cross-ratio Compactification of the Configuration Space of Ordered Points on C

A natural compactification of the virtual configuration space of N points on the Riemann sphere C is constructed by using cross-ratios. We show that this compactification is homeomorphic to the Bers' compactification of the virtual moduli space of a punctured Riemann sphere of type N. In particular, the system of global and explicit coordinates of this standard compactification is given by cross-ratios.
A Quantitative Version of the Bishop-Phelps Theorem for Operators in Hilbert Spaces

In this paper, with the help of spectral integral, we show a quantitative version of the Bishop-Phelps theorem for operators in complex Hilbert spaces. Precisely, let H be a complex Hilbert space and 0 < ε < 1/2. Then for every bounded linear operator T: H → H and x_0∈ H with ‖T‖=1=‖x_0‖ such that ‖Tx_0‖>1-ε, there exist x_ε∈H and a bounded linear operator S:H→H with ‖S‖=1=‖x_ε‖ such that||Sx_ε|| = 1,||x_ε - x_0|| ≤ 1/22ε + ~41/22ε, ||S - T|| ≤ 1/22ε.
常染色体显性遗传视网膜色素变性基因检测研究进展

视网膜色素变性(RP)是一组进行性的可致肓的遗传性视网膜疾病,以视网膜光感受器和色素上皮细胞变性为主要特征,发病率约为1/4000,全世界受累人数约为1百万人.RP具有明显的临床和遗传异质性.常染色体显性遗传视网膜色素变性(ADRP)占RP的20%~25%,目前共定位了21个位点,其中克隆了19个基因.由于ADRP危害较为严重、发病率较高,近年来已成为眼科遗传学研究的热点.此文对近年来研究进展做一综述.
旋转性斜视角度的客观检查

旋转性斜视角度测量分为主观检查及客观检查.旋转性斜视角度客观检查可通过检查测量眼底视盘—黄斑中心凹夹角确定.文中综述视盘—黄斑中心凹夹角测量对旋转性斜视的诊断及判断手术预后的作用.
金属内支架治疗老年恶性肠梗阻的疗效和安全性

有1/3的结肠癌患者以急性恶性肠梗阻为首发症状,急诊手术并发症的发生率和死亡率很高。老年患者既往多有较多的伴发病,更增加手术的危险性。金属内支架不仅能暂时解除肠道梗阻,变急诊手术为择期手术,又可作为没有手术适应证患者姑息性治疗的手段。本文主要探讨老年恶性肠梗阻患者接受金属内支架治疗的临床疗效和安全性。
1,6-果糖二磷酸对老年体外循环患者肺保护作用

体外循环(CPB)技术是非生理性循环方式,会对患者组织、器官造成不同程度的损伤,而危害最大的就是肺组织。据相关临床统计得出,CPB后患者发生肺功能障碍约为15%~30%,严重时可诱发成人呼吸窘迫综合征(ARDS)并导致患者死亡,特别是对于基础功能和代偿功能较差的老年患者,CPB造成损伤更明显。1,6果糖二磷酸(FDP)是细胞内糖酵解代谢途径中一种重要中间产物,它对多种代谢途径具有直接调节作用,是一种高能底物与代谢调节剂,可调节机体内酶活性与能量代谢,对肺组织有保护作用。本文拟探讨FDP对老年CPB患者的肺保护作用。
社区老年人生活质量与中医养生认知的相关性

目的探讨社区老年人生活质量与中医养生认知的相关性。方法以SF-36(简明健康测量量表)及自制的中医养生认知问卷对随机抽取的311名长春市社区老年人进行调查,对调查结果进行统计描述及相关分析。结果在调查的311名老年人中,生活质量处于良、中、差的人数占被调查者的23.47%、75.24%、1.29%。不同性别、年龄、文化程度、收入、是否患有慢性病、是否定期体检的老年人,其生活质量差异有统计学意义(P<0.05);社区老年人中医养生认知同其生活质量呈正相关(R=0.528,R2=0.279,P<0.05)。结论长春市社区老年人生活质量有待进一步提高,社区老年人中医养生认知越高。其生活质量越好。
甘氨茶碱钠常规与联合辛伐他汀治疗慢性阻塞性肺病患者的临床疗效

目的采用甘氨茶碱钠联合辛伐他汀用药治疗慢性阻塞性肺疾病(COPD)患者,通过与甘氨茶碱钠常规治疗的对照分析,判断联合辛伐他汀的治疗效果。方法80例COPD患者,半随机分成41例甘氨茶碱钠联合辛伐他汀治疗的观察组,39例甘氨茶碱钠联合罗红霉素治疗的对照组。采用酶联免疫法检测血清炎性细胞因子白介素(IL)-6、IL-8、肿瘤坏死因子(TNF)-α。Profiler体描绘肺功能仪测定肺活量的百分比(FEV1/FVC%)及第一秒用力呼吸量占预计值的百分比(FEV1/pre%)。按照疗效评价标准判断两组的临床疗效。结果两组治疗前后炎症细胞因子与肺功能的检查结果显示,IL-6,IL-8,TNF-α两组治疗前后各自分别比较均有统计学差异(P<0.001),治疗后观察组与对照组比较有统计学意义(P<0.001)。FEV1/FVC,FEV1/pre,呼吸困难指数两组治疗前后除对照组FEV1/FVC没有差异外,其他均有统计学意义(P<0.02,P<0.001),两组治疗后比较,除FEV1/pre没有差异外,其他均有统计学差异(P<0.001)。两组治疗前后pH,PaCO_2,PaO_2,SaO_2均有统计学差异(P<0.05,P<0.01,P<0.001),治疗后观察组与对照组比较PH,PaCO_2,PaO_2,SaO_2值有统计学意义(P<0.05,P<0.001)。两组临床疗效比较虽无统计学差异(P>0.05),但治疗组的有效率为95.24%,对照组为75.61%。结论本研究采用甘氨酸茶碱钠片加用辛伐他汀治疗COPD,对患者的炎性细胞因子IL-6、IL-8、TNF-α与肺功能及动脉血气有明显的改善,证明了他汀类药物的多效性在COPD的治疗中有潜在的价值,为COPD的预防和治疗提供了一条新的选择途径。
成人型左冠状动脉起源于肺动脉1例

左冠状动脉异常起源于肺动脉又称Bland-White-Garland综合征,发生率约占活产婴儿的1/30万,分为婴儿型和成人型:婴儿型指左右冠状动脉间缺乏或有很少侧支血管,心肌缺血明显,最终致左心衰和心室扩大,如不治疗患儿会迅速死亡;成人型约占10%,于左右冠状动脉间形成丰富侧支循环,右冠状动脉增粗,血流量增加,灌注全心、维持心脏功能,患儿可存活至儿童期、甚至成年,由于肺动脉压力低,冠脉血流易经左冠状动脉流到肺动脉,产生冠状动脉至肺动脉窃血现象,常伴有轻、中度心肌损伤,易发生心律失常和猝死。本例42岁,无明显心肌缺血症状,主要是因为左右冠脉间存在丰富的侧支循环,为心肌供血;但CT显示左心室壁变薄,提示心肌存在慢性缺血改变。选择性冠脉造影显示了增粗纡曲的右冠状动脉、丰富的侧支循环及血流方向,但未能判断左冠状动脉开口位置。冠状动脉CTA直观、清楚地显示左冠状动脉异常开口于肺动脉根部,但对于左右冠脉间的吻合支显示不清,不能判断冠脉血流方向。综合冠状动脉造影及冠状动脉CTA检查,可对此病作出正确诊断。
超声心动图诊断完全性大动脉转位合并肺动脉瓣狭窄

总之,同时测量CTGA患儿的PA/AO和PVPA参数,以PA/AO≤0.9和(或)PVPA≥3m/s诊断动力性PVS的敏感度和特异度均较高,可作为超声诊断CTGA合并动力性PVS的有效参考指标,指导ASO术前筛选。
百草枯中毒肺损伤的CT表现

百草枯(paraquat,PQ)是目前广泛使用的除草剂,百草枯中毒并不少见,已成为继有机磷农药中毒之后的第2位农药中毒。百草枯可经皮肤、呼吸道、消化道进人体内,主要以误服或服毒自杀引起中毒。本文回顾分析12例具有完整临床资料的百草枯中毒患者的胸部CT表现,旨在提高对该病的认识。
苏南农村农业面源污染的研究进展

苏南是我国经济较为发达的地区,但也存在着水体富营养化等环境问题。通过对农业面源污染特征及其危害的阐述分析,结合国内外建立农业面源污染模型的发展,提出了目前我国在太湖流域控制农业面源污染方面研究的不足以及今后的重点。
国内外干旱及干旱指标研究进展

干旱灾害是对人类社会危害较大的一种自然灾害,也是我国最常见的灾害。总结了国内外关于干旱定义和分类,对气象干旱指标、农业干旱指标、水文干旱指标、社会经济干旱指标、遥感干旱指标进行了对比分析,在此基础上对干旱识别和评价的发展趋势做出展望。
氮磷生态拦截技术在治理太湖流域农业面源污染中的应用

农业面源污染是造成太湖水污染的重要原因之一,利用生态处理技术治理农业面源污染已经作为一种经济有效的技术措施逐渐得到推广应用。生态处理技术是充分利用水体生物系统去除污水中的氮磷等污染的技术。通过氮磷生态拦截技术在镇江某农业示范园中的应用实例,介绍了太湖流域面源污染治理生态拦截工程的设计和建设,探讨了该技术在治理太湖流域面源污染中的作用和效果,并对其产生的经济效益进行分析。
磷酸法稻壳基活性炭制备及表征

以稻壳为原料,采用磷酸活化法制备活性炭,考察了原材料与活化剂的配比、活化温度和活化时间等因素对活性炭吸附性能的影响,确立了调控活性炭性能的工艺方法和工艺条件。利用扫描电镜观察了活性炭的形貌特征,利用X射线衍射分析了稻壳活性炭中微晶的晶体结构。研究结果表明,以稻壳为原料、磷酸为活化剂在实验室的马弗炉中制备活性炭的适宜工艺条件为:活化剂/炭为3,活化温度为400℃,活化时间为2 h,所制得的活性炭的碘吸附值为809 mg/g。
淡水鱼鱼糜蛋白质变色变性的控制措施

淡水鱼鱼糜蛋白质变色、变性与其蛋白质组成密切相关。根据鱼肉蛋白质冷冻和加热变色、变性机理,应使用第1次采的肉,采肉后进行严格的漂洗、低温或真空擂溃,均可防止其色泽劣变;漂洗、沥干、精滤、绞肉、擂溃过程中控制温度于10℃以下,以4%蔗糖+4%山梨醇+0.3%复合磷酸盐为抗冻剂,在-40℃冻结,3~5 h使鱼糜中心温度达到-20℃~-25℃,在-20℃以下冷藏,可有效预防淡水鱼鱼糜蛋白质变性。
石油污染土壤的微生物修复

微生物修复技术具有高效率、低成本、无污染等优点,已经成为修复石油污染土壤、改善生态环境、实现农业可持续发展的重要方法之一。文章对近年来国内外最新研究成果进行了总结,介绍了微生物修复石油污染土壤的原理、特点及相关研究进展,并对修复技术及其评价方法进行了展望。
浅谈城市绿道的构建——以新加坡南部山脊为例

新加坡的绿道研究和实践工作相对完善和成熟。以新加坡南部山脊为例探讨了城市绿道构建,介绍了组成南部山脊的4个公园和7条游径,提出了我国城市绿道建设的建议。
南通市区主干道绿化设计要点与发展对策

分析了南通市区主干道绿化存在的问题,阐述了城市道路绿化设计的指导思想、设计原则、种植设计要点以及注意事项,从有助于城市生态环境保护、城市生物多样性保护和环境美化等方面提出了南通市区主干道绿化发展对策。
金银花的生态特性及其在园林绿化中的应用

金银花是中国传统绿化树种及药用植物。本文对金银花的种质资源及其生物学特性、分布、主要观赏特性和用途进行了归纳评价,挖掘总结了其丰富的文史内涵,系统阐述了金银花在园林绿化中的应用途径。
基于多阈值分析法的树木年轮特征识别方法研究

针对树木年轮图像特点,利用小波变换的方法对年轮图像的数据进行压缩,在保证较高清晰度的前提下,获得较高的压缩率;针对树木年轮图像在复杂背景下分割困难的问题,提出一种多阈值分析法并进行年轮图像识别,仿真结果表明,该方法比采用Prewitt算子、Log算子及Canny边缘检测算子所得到的年轮特征更为完整和清晰。
甘薯地下害虫和茎线虫病防治药剂筛选试验

为促进甘薯绿色产业的发展,减少高残留农药的施用,研究40%氧乐果乳油、30%辛硫磷微胶囊剂、25%毒死蜱微胶囊剂、30%三唑磷微胶囊剂4种药剂对防治甘薯地下害虫和茎线虫的效果。结果显示,以30%三唑磷微胶囊剂(用量15 kg/hm~2)的防治和灭杀效果最明显。
2011年中国棉花生长指数在江苏省的应用

阐述了江苏省2011年棉花生产的概况,分析了棉花主要生育期气候条件对棉花生长的影响,并进一步运用中国棉花生长指数(CCGI)分析棉花长势及预测产量。结果表明,CCGI是反映气候变化的敏感快捷的指标,对棉花生产具有重要指导意义。在此基础上,预测了2012年植棉形势,提出了江苏棉花生产发展的建议。
ABA对甘薯体细胞胚分化及再生的影响

以徐薯28、徐薯29、徐55-2、徐20-1等4个甘薯新品种(系)茎尖分生组织诱导的胚性愈伤组织为试验材料,研究脱落酸(ABA)在甘薯体细胞胚诱导和植株再生中的作用。结果表明,ABA对体细胞胚发生的调节作用与甘薯基因型和作用时间有关。胚性愈伤组织在体胚诱导培养基(MS+1.0 mg/mL ABA)上,10 d即可产生大量体细胞胚,其中徐薯29体胚诱导率最高,达90%以上,徐薯28次之,徐20-1最低;ABA作用时间延长至30 d时,所有品种(系)体细胞胚均褐变死亡,但将ABA处理10 d后得到的体胚进一步转移至MS基本培养基上,体胚可再生出完整植株,但再生率和植株长势明显不如未经ABA处理组。在MS固体基本培养基上,各品种(系)胚性愈伤组织形成体细胞胚时间延长,但延长培养时间至20 d时,最终可获得与ABA诱导基本相同的结果,说明用ABA诱导胚性愈伤可以缩短形成体细胞胚所需时间,促进体胚的成熟。
不同品种红小豆的组织培养与快繁技术

以红小豆新品种保876-16和保红947的小真叶为外植体,进行组织培养与高效快繁技术研究,确定最适的愈伤诱导、继代增殖、生根培养的激素浓度,以及不同移栽基质对成活率的影响。结果表明:愈伤诱导率最高的培养基为MS+6-BA 0.2 mg/L+NAA 0.1 mg/L,出愈率达75.9%,愈伤组织紧密且呈现暗绿色;丛生芽增殖的最适培养基为MS+6-BA 0.5 mg/L+NAA 0.2 mg/L,芽分化率达94.4%,分化时间短,分化芽健康;生根培养的最适培养基为1/2MS+NAA 0.2 mg/L+IBA 0.2 mg/L,生根率达80.4%,生根快,根粗壮;组培苗在腐殖质∶河沙为1∶1的基质中成活率高。红小豆保876-16的愈伤诱导率、芽分化率、生根率总体高于红小豆保红947。
江苏省农机装备工业转型升级战略研究

江苏省农机装备工业在"十一五"期间得到快速发展,但是也存在着很多深层次问题,转型升级是现阶段需要考虑的迫切问题。分析了江苏省农机装备工业的发展现状、特征、存在问题和发展趋势,提出了江苏省农机装备工业转型升级的战略定位和发展思路。
Sucrose as chiral selector for determining enantiomeric composition of phenylalanine by UV-vis spectroscopy and chemometrics

The determination of enantiomeric composition by partial least squares(PLS) modeling of UV-vis spectral data was investigated for samples of phenylalanine(phe) using sucrose as a chiral auxiliary.And a new data preprocess method,reference band normalization,was introduced to eliminate the spectral variations due to the changes of total concentration of phe.The determination coefficient(R~2) and the standard error of calibration set(SEC) of 13 standard samples are 0.9987 and 0.0128 respectively.The standard error of validation set(SECV) of 7 validation samples is 0.0049.The standard error of predict(SEP) of 6 blind samples for evaluating the robustness of the model is 0.0366.The regression model is robust to determine enantiomeric composition when total concentration varied.It is demonstrated that the reference band normalization is a convenient method of compensating for variations in total concentrations without knowing that in advance.
Synthesis,spectral studies,thermal behavior,and antibacterial activity of Ni(Ⅱ),Cu(Ⅱ),and Zn(Ⅱ) complexes with an ONO tridentate Schiff base

Three new transition metal complexes have been synthesized with a Schiff base,3-(2-hydroxy-5-chlorophenylimino)-l,3- diphenylpropen-1-one.In all complexes Schiff base is completely deprotonated and coordinated to metal as tridentate ligand via phenolic and enolic oxygens and imine nitrogen.Thermal decomposition of the complexes has been studied by thermogravimetry. The in vitro antibacterial activity of Schiff bases and their complexes has been evaluated and compared with the standard drugs.
Polystyrene-supported chloroaluminate ionic liquid as a new heterogeneous Lewis acid catalyst for Knoevenagel condensation

Non-hygroscopic polystyrene-supported chloroaluminate ionic liquid was prepared from the reaction of Memfield resin with 1- methylimidazole followed by reaction with aluminum chloride.This Lewis acidic ionic liquid is environmentally friendly heterogeneous catalyst for the Knoevenagel condensation of aromatic and aliphatic aldehydes with ethyl cyanoacetate.The catalyst is stable(as a bench top catalyst) and reusable.
Functionalization of polyhedral oligomeric silsesquioxanes with bis(hydroxyethyl) ester and preparation of the corresponding degradable nanohybrids

One novel difunctionalized polyhedral oligomeric silsesquioxanes(POSS) derivative was designed and synthesized by a convenient method with high yield.1H NMR and FT-IR characterizations suggested that Michael addition reaction successfully took place between 2-hydroxyethyl acrylate(HEA) and aminopropylisobutyl POSS(POSS-NH_2) under mild conditions,which finally formed bi(hydroxyethyl) ester-functionalized POSS derivatives(BH-POSS).Due to the similar functional groups and high reactivity,BH-POSS could be easily incorporated into the main-chain of biodegradable aliphatic-aromatic copolyesters PBTL via in situ melt polycondensation to prepare corresponding degradable nanohybrids with high mechanical properties.
A NEW NUMERICAL WAVE FLUME COMBINING THE 0-1 TYPE BEM AND THE VOF METHOD

A new coupling numerical wave model, based on both the Boundary Element Method (BEM) and the Volume Of Fluid (VOF) method, is established by taking advantages of the both methods to solve the wave-structure interaction problems. In this model, the wave transformation in front of structures is calculated by the 0-1 type BEM, and the intense wave motions near the structures are calculated by the VOF method. In this paper, the characteristics of the BEM and the VOF method are discussed first, and then the coupling treatments are described in detail. In the end, the accuracy and the validity of the coupling model are examined by comparing the numerical results with experiment results and other numerical results available for the interactions between regular waves with a monolayer horizontal plate.
硬膜外前、侧间隙置管持续注药联合臭氧治疗颈椎间盘突出症的疗效分析

目的:探讨经硬膜外前、侧间隙置管持续注药联合注射臭氧治疗颈椎间盘突出症的临床疗效。方法:57例颈椎间盘突出症患者随机分为两组(A组,n=29例;B组,n=28例),均采用相应部位颈部硬膜外前、侧间隙置管,持续泵入消炎镇痛药物,每隔48h,注射1次,持续药物输注3—4周,共治疗10—11次。A组注射臭氧,B组注射纯氧,分别于治疗前,治疗后72h、1个月、6个月对两组患者进行疼痛评价及疗效随访。结果:治疗前,治疗后72h、1个月、6个月的VAS评分分别为:A组7.4±1.2、0.9±0.4、1.4±0.9和3.1±1.1;B组7.3±1.3、2.5±0.8、3.5±1.0和4.7±2.1。治疗后72h、1个月、6个月的优良率分别为:A组96.6%、86.2%和79.3%;B组:85.7%、67.8%和60.7%,治疗后72h、1个月、6个月组间比较差异均有显著性(P<0.05);治疗后72h、1个月、6个月的平均VAS评分都明显低于治疗前;A组明显低于B组,差异有统计学意义(P<0.05);各组无明显并发症发生。结论:连续硬膜外前、侧间隙置管持续注药联合注射臭氧或纯氧治疗颈椎间盘突出症临床疗效显著(P<0.05),前者疗效优于后者(P<0.05)。
肺结核合并胸膜和胸腹壁多发囊性病变

对临床表现和影像学表现不典型的患者,应设法获取病原学或病理学依据,但对囊性病变进行有创操作前,应充分考虑到操作可能带来的并发症,并进行囊性肿瘤压缩试验,检查肿物的大小和张力是否随呼吸运动发生变化,评估其是否与胸腹腔相通,以确定肿物穿刺或切除活检的方法.
蒜素联合亚胺培南对耐碳青霉烯类抗生素鲍曼不动杆菌体外抗菌活性研究

鲍曼不动杆菌是目前临床上常见的条件致病菌,其耐药性特别是对碳青霉烯类抗生素的耐药性近几年来增长迅速,甚至出现了只对黏菌素敏感而其他抗生素均耐药的菌株,如何有效治疗多重耐药的鲍曼不动杆菌成为目前临床上一项重要的课题.大蒜素(allicin)又名大蒜新素,化学名为二烯丙基三硫化物,是从蒜的球形鳞茎中提取的挥发性油状物,是大蒜的主要有效成分.近年来,国内外学者对大蒜素的化学性质、药理作用和临床疗效进行了多方面的研究,证明大蒜素杀菌力强,抗菌谱广.本研究对大蒜素在抑制多耐药鲍曼不动杆菌的效果进行了初步探讨,现将结果报道如下.
某钢铁企业辐射源项的风险识别与控制

为了解辐射源项在钢铁企业生产中的应用状况、存在问题以及潜在危害,为企业放射风险管理提供技术支持。依据辐射源项的相关法规标准和澳大利亚新西兰风险管理标准(AS/NZS4360)以及危害分析与关键控制点(HACCP)的要求,对某大型国有钢铁企业在生产过程中使用的600余个(密封源约占80%)辐射源项,从其购置、运输、安装、使用、维护、拆卸以及密封源废弃的整个环节进行风险识别,并对可能存在的安全隐患进行分析评估。结果显示,该钢铁企业可能发生放射风险的指数为8~76,放射性风险事件12个,其中,极严重风险5个,高危险度风险5个,中等危险度风险1个,低危险度风险1个;同时提出了辐射防护的关键控制点和相关控制措施。
温度、降水与树木径向生长关系研究进展

本文综述了树木径向生长与温度、降水之间的关系及在温度、降水等方面的应用研究,针对我国树木年轮宽度研究现状提出了扩大研究区域和研究树种、对不同生长环境的树种进行分析比较、学科交叉进行研究等建议,为我国树木年轮径向生长的进一步分析研究提供一定的参考。
Stability of aneurysm solutions in a fluid-filled elastic membrane tube

When a hyperelastic membrane tube is inflatedby an internal pressure, a localized bulge will form when thepressure reaches a critical value. As inflation continues thebulge will grow until it reaches a maximum size after whichit will then propagate in both directions to form a hat-likeprofile. The stability of such bulging solutions has recentlybeen studied by neglecting the inertia of the inflating fluidand it was shown that such bulging solutions are unstableunder pressure control. In this paper we extend this recentstudy by assuming that the inflation is by an inviscid fluidwhose inertia we take into account in the stability analysis.This reflects more closely the situation of aneurysm forma-tion in human arteries which motivates the current series ofstudies. It is shown that fluid inertia would significantly re-duce the growth rate of the unstable mode and thus it has astrong stabilizing effect.