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    题名 作者 年代 出处 被引量
1Why Lake Taihu continues to be plagued with cyanobacterial blooms through 10 years(2007–2017) efforts显示文摘With the expansion of urban, industry, and agriculture after World War II, eutrophication firstly emerged as a major water quality threat in small water bodies [1]. As the increasing magnitudes and scales of nutrient pollution and habitat alteration, many of the world's large lakes exhibit symptoms of eutrophication, e.g., toxic cyanobacterial blooms, deoxygenation, and habitat loss.Boqiang Qin Hans W.Paerl Justin D.Brookes Jianguo Liu Erik Jeppesen Guangwei Zhu Yunlin Zhang Hai Xu Kun Shi Jianming Deng 2019Science Bulletin2019,64,6:50
2顶空固相微萃取气质联用检测鸭肉挥发性风味成分显示文摘采用顶空固相微萃取气质联用(Headspacesolidphasemicroextractioncombinedwithgaschromatgraphymassspectrometry,HS-SPME-GC-MS)分析检测了生鸭肉、烘烤鸭肉、水煮鸭脯肉和鸭腿肉的挥发性香气成分。共检测到55种风味化合物,其中烃类10种、酮类8种、醇类8种、醛类12种、酸类5种、酯类2种、含硫含氮及杂环化合物10种。刘源 周光宏 徐幸莲 刘扬岷 王利平 袁身淑 2005江苏农业学报2005,21,2:39
3Epidemiological progresses of hemorhagic fever with renal syndrome in China显示文摘PurposeTosummarizethemajorachievementsofChineseworkontheepidemiologyandpreventionofhemorhagicfeverwithrenalsyndrome(HFRS)inre...宋干 1999Chinese Medical Journal1999,,5:35
4谣言实现的社会机制及对信息的治理显示文摘Rumors are a type of false information, a consequence of an asymmetrical informational structure. This paper focuses on the social mechanisms of rumor fulfilling. Rumors with important contents related to people’s personal interests win acceptance through changing people’s expected payoffs, misleading people to the belief that acceptance of the rumor would beneficially outperform rejection of it. Nevertheless, it is risky to believe rumors; therefore, people make their decision whether to believe a rumor or not by referring to other people’s choices. An analysis was performed first within a game model that incorporated the variables of an individual’s expectancy and other people’s impact to predict whether the individual would accept or reject a rumor. Another analysis followed to further examine the functions of some dynamic mechanisms in rumor fulfilling when group pressure and network effects were introduced. Finally, an exploratory discussion on how to prevent rumors and erase their effects via information management strategies was presented.李国武 2005社会2005,25,4:31
5伴胼胝体压部可逆性病变的轻度脑炎/脑病儿童病例一例并文献复习显示文摘目的 探讨伴胼胝体压部可逆性病变的轻度脑炎/脑病(MERS)的临床及头颅影像学特征.方法 报道1例MERS患儿临床及影像学特点.对以下数据库2000年1月至2013年6月收录的论文进行检索:中国期刊全文数据库(CNKI)、中国生物医学文献数据库(CBM)、美国国家生物技术中心(NCBI)、生物医学文献数据库(PubMed)、万方数据知识服务平台,共收集已报道的44例MERS儿童患者临床及影像学特点,对其进行分析.结果 本例MERS发生前的基础疾病为呼吸道支原体感染,病程第2天出现脑病症状,头颅MRI为胼胝体压部、半卵圆中心及侧脑室后角病变,3周内临床及影像学完全恢复.44例MERS患儿多发生于感染性疾病过程中,临床有意识障碍、惊厥、构音障碍等表现;头颅MRI为胼胝体压部病变,除胼胝体压部受累外,还包括胼胝体膝部、半卵圆中心、额叶白质等部位,临床症状及影像多于2周内恢复正常.结论 MERS表现为在急性炎症疾病过程中出现急性轻微脑病症状,头颅MRI表现为胼胝体压部可逆性病变,短期内可完全恢复.赵立荣 吴晔 郭芒芒 肖江喜 姜玉武 2014中华儿科杂志2014,52,3:34
6大亚湾海域生态系统模型研究I:能量流动模型初探显示文摘主要根据1984~1986年和1986~1987年在大亚湾进行的环境、资源和生态调查资料,应用EcopathwithEcosim(EwE)软件,构建大亚湾海域生态系统初步能量流动模型。文中根据大亚湾游泳动物的食物组成特点,把该海域生态系划分15个功能组,分别是海洋哺乳动物、肉食性鱼类、底栖捕食鱼类、滤食性鱼类、草食性鱼类、蟹类、虾类、头足类、底栖动物、水母、浮游动物、珊瑚、沉水植物、浮游植物和有机碎屑,功能组的划分基本能覆盖大亚湾海域生态系统的能量流动过程。经EwE软件模拟,结果表明:大亚湾海域生态系统的营养级范围为1~3.88级;各营养级的能量转换效率分别为7.2%,11.2%,8.7%,2.9%,可用构建金字塔形状来描述营养流动的转换效率;大亚湾生态系统的总能量传递效率为8·9%,略低于林德曼转换效率(10%左右),可能是由于在该海域大量的沉水植物(马尾藻)未能被充分利用而腐烂所造成;在能量流动过程中,直接来源于碎屑的比例占总流量的48%,而直接来源于初级生产者的比例为52%。王雪辉 杜飞雁 邱永松 李纯厚 黄洪辉 孙典荣 贾晓平 2005南方水产2005,1,3:29
7AN ANALYTICAL SOLUTION TO LONGITUDINAL VIBRATION OF A PILE OF ARBITRARY SEGMENTS WITH VARIABLE MODULUS显示文摘The vibration problem of a pile of arbitrary segments with variable modulus under exciting force is established, in which the influence of the soil under pile toe and the surroundings is taken into account. With Laplace transforms, the transmit functions for velocity and displacement of pile are derived. Furthermore, in terms of the convolution theorem and inversed Laplace transform, an analytical solution for the time domain response of a pile subjected to a semi-sine impulse is developed,which is the theoretical basis of the sonic method in pile integrity testing. Based on the solution, the vibration properties of pile with sharp or continuous modulus are studied. The validity of this approach is verified through fidd dynamic tests on some engineering piles. It shows that the theoretical prediction and the response of the pile are in good agreement.Wang Teng Wang Kuihua Xie Kanghe 2001Acta Mechanica Solida Sinica2001,14,1:27
8叶面喷施稀土对千年桐幼苗生长和生理的影响显示文摘The seedlings of Vernicia montana derived from seeds soaking with water (the first group)or 300 mg5L -1 mixed nitric_acid rare earth solution (the second group) were treated with various concentrations of mixed nitric_acid rare earth solution by foliage spraying. The results showed that the seedling heights sprayed with 100 和 1 000 mg·L -1 of the first group and with 50 和 100 mg·L -1 of the second group were significantly higher than the controls, and the diameter at ground level sprayed with 300 mg·L -1 of the second group was significantly greater than the control, being 26.92% more than the latter; except for spraying with 0 mg5L -1 and 700~1 500 mg5L -1 of the second group, the seedling dry weight above ground of others was 29.13%~73.91% greater than the control, whereas the seedling dry weight under ground of others was 20.78%~116.88% greater than the control; the contents of chlorophyll a and chlorophyll b for all spraying seedling were 91.67%~191.67% and 87.5%~306.25% greater than the control, respectively, and soluble proteins and soluble sugars were 16.00%~179.78% and 10.73%~105.65% greater than the control, respectively. Compared with the control, the activity of SOD tended to increase, whereas the contents of MDA decreased. These indicated that spraying leaves with optimum concentration of mixed nitric_acid rare earth solution could markedly promote the growth of seedlings and improve resistance ability of V. montana seedlings to bad environment. On the whole, the effects of spraying the leaves of seedling with 50~500 mg5L -1 mixed nitric_acid rare earth solution, which were derived from seeds soaking with 300 mg·L -1 mixed nitric_acid rare earth solution, were good.韦如萍 薛立 陈红跃 彭耀强 许松葵 2005林业科学2005,41,2:28
9铅和镉污染对大羽藓生理特性的影响显示文摘This paper dealt with the effects of Pb 2+,Cd 2+ and their combined pollution on the contents of chlorophyll,potassium and calcium in Thuidium cymbifolium.The results showed that except at 0.1 mg Cd 2+·L -1,the chlorophyll content decreased with increasing Pb 2+ and Cd 2+ concentrations,which was 18% of the control at 100 mg Cd 2+·L -1,and decreased by 48.6% at 200 mg Pb 2+·L -1.The potassium and calcium contents also decreased with increasing pollutants concentrations,being decreased by 61.1% at 100 mg Cd 2+·L -1.Cd 2+ had a stronger toxicity than Pb 2+,and the toxicity of their combined pollution was stronger than that of each pollutant.Pb 2+ could increase the toxicity of Cd 2+.魏海英 方炎明 尹增芳 2005应用生态学报2005,16,5:27
10Cluster analysis for syndromes of real-world coronary heartdisease with angina pectoris显示文摘Syndromes of coronary heart disease with angina pectoris were analyzed to provide guidance forclinical practice and to improve accuracy of traditional Chinese medicine (TCM) diagnoses and efficacy of TCMtreatment. A total of 860 cases with coronary heart disease with angina pectoris were selected from TCM ClinicalResearch Information Sharing System for TCM clinics and research. Syndromes were automatically extractedwith the cluster method and were analyzed to provide objective evidence for clinical studies. Final syndromeclassifications were recognized and confirmed by clinical experts. Popular syndromes included Qi and blooddeficiency, blood stasis and obstruction collaterals, liver depression and spleen deficiency, and Qi stagnation andblood stasis. Syndromes Qi and blood deficiency and blood stasis and obstruction collaterals accounted for 28.61%of total syndromes, whereas liver depression and spleen deficiency and Qi stagnation and blood stasis accountedfor 26.44%. The main syndrome elements comprised Qi deficiency, blood deficiency, blood stasis, and Qistagnation.Yufeng Zhao Xueyun Yu Xinyu Cao Lin Luo Liyun He Shusong Mao Li Ma Peijing Rong Yuxue Zhao Guozheng Li Baoyan Liu 2018Frontiers of Medicine2018,12,5:28
11他们不再是孩子了 关于“新失业群体”现状的社会学报告显示文摘The “New Unemployed” consists of young people with low education in the Chinese cities. They differ from the cohorts of their parents because they have no work experiences in any state- or collective-owned enterprise, and are subject to completely different policies designated by the government. Investigations of their daily living lead to the conclusion that the “New Unemployed” has gone through a “system withdrawal” process. They are now facing an environment of “system vacuum” that none of other unemployed groups has ever encountered before. The author emphasizes in the paper a strategic employment principle of “For Future Generations” so that focused attention and care can be provided and this toughest challenge in China can be dealt with.吕鹏 2005社会2005,25,4:26
12Ecopath with Ecosim在水生生态系统研究中的应用显示文摘地球上的水体为人类提供着无法计量的生态系统服务和相应的生态价值。然而,水生生态系统一直承受着巨大的捕捞和环境压力。为更好地分析人类以及自然扰动对水生生态系统的影响,并建立科学合理的管理机制,许多研究种群结构和动态的模型软件以及建模方法被开发出来。这些模型包括单种群模型、多物种虚拟种群分析模型(Multispecies virtual population analyses,MSVPA)以及基于食物网的生态系统模型等。单种群模型难以全面地反映整个生态系统的结构和功能,也难以预测渔业和环境变迁在系统水平上的影响,从而无法实现宏观和科学的决策。MSVPA的局限性则在于其所需参数过于复杂,宋兵 陈立侨 Chen Yong 2007海洋科学2007,31,1:26
13Endoscopic diagnosis of sessile serrated adenoma/polyp with and without dysplasia/carcinoma显示文摘Sessile serrated adenoma/polyps(SSA/Ps) are early precursor lesions in the serrated neoplasia pathway, which results in colorectal carcinomas with BRAF mutations, methylation for DNA repair genes, a Cp G island methylator phenotype, and high levels of microsatellite instability. Some of these lesions can rapidly become dysplastic or invasive carcinomas that exhibit high lymphatic invasion and lymph node metastasis potentials. Detecting serrated lesions, including SSA/Ps with and without dysplasia/carcinoma, is critical, but SSA/Ps can be difficult to detect, are inconsistently identified by endoscopists and pathologists, and are often incompletely resected. Therefore, SSA/Ps are considered to be major contributors to 'interval cancers'. If colonoscopists can identify the specific endoscopic characteristics of SSA/Ps, their detection and the effectiveness of colonoscopy may improve. Here, the endoscopic features of SSA/Ps with and without dysplasia/carcinoma, including the characteristics determined using magnifying endoscopy, are reviewed in the context of previous reports. Endoscopically, these subtle polyps are like hyperplastic polyps, because they are slightly elevated and pale. Unlike hyperplastic polyps, SSA/Ps are usually larger than 5 mm, frequently covered by a thin layer called the ‘‘mucus cap'', and are more commonly located in the proximal colon. Magnifying narrow-band imaging findings, which include dark spots inside the crypts and varicose microvascular vessels, in addition to the type II-open pit patterns detected using magnifying chromoendoscopy, effectively differentiate SSA/Ps from hyperplastic polyps. The lesions' endoscopic characteristics, which include their(semi)pedunculated morphologies, double elevations, central depressions, and reddishness, and the use of magnifying endoscopy, might help to detect dysplasia/carcinoma within SSA/Ps. Greater awareness may promote further research into improving the detection, identification, and complete resection rates of SSA/Ps with and without dysplasia/carcinoma and reduce the interval cancer rates.Takashi Murakami Naoto Sakamoto Akihito Nagahara 2018World Journal of Gastroenterology2018,24,29:25
14Eosinophilic chronic rhinosinusitis in East Asians显示文摘Chronic rhinosinusitis(CRS) is a common disease worldwide, with a prevalence rate of 5%-15% in the general population. CRS is currently classified into two types: CRS with and without nasal polyps. CRS may also be divided into eosinophilic CRS(ECRS) and non-ECRS subtypes based on the presence of tissue eosinophilic infiltration or not. There are significant geographic and ethnic differences in the tissue eosinophilic infiltration, which is predominant in Western white patients and less common in East Asians, despite an increasing tendency for its prevalence in East Asia countries. ECRS differs significantly from non-ECRS in clinical characteristics, treatment outcomes and strategies, and underlying pathogenic mechanisms. ECRS commonly demonstrates more severe symptoms, polyp diseases with a higher incidence of bilateral polyps and sinonasal diseases on computed tomography, and the increase in blood eosinophils. ECRS is considered a special and recalcitrant subtype of CRS, commonly with poor treatment outcomes compared to non-ECRS. The differentiation of specific subtypes and clinical features of CRS will be important for developing novel treatment strategies and improving treatment outcomes for individual phenotypes of CRS. This review discusses clinical features, diagnosis, treatment and prognosis of ECRS in East Asians.En-Tong Wang Yan Zheng Peng-Fei Liu Li-Juan Guo 2014World Journal of Clinical Cases2014,2,12:26
15语言类型学的眼光显示文摘沈家煊 2009语言文字应用2009,,3:24
16论中国西南地区早期佛像显示文摘中国西南地区在东汉晚期至蜀汉前期至蜀汉前期已出现早期佛像,主要见到随葬钱树上的铜或陶质佛像,也有部分崖墓石刻画像中的石佛像,它们很可能代表了中国内地最早阶段的典型佛像。早期佛像在西南地区流行应与本土传统的升仙信仰有关,可能是经由'丝绸之路'传入川西地区后在此区域内传播。罗二虎 2005考古2005,,6:22
17鼓膜打孔及腺样体切除术治疗儿童分泌性中耳炎显示文摘分泌性中耳炎(secretory otitis media,SOM)是以中耳积液(包括浆液、黏液或浆-黏液)及听力下降为主要特征的中耳炎性疾病,小儿发病率较高,是引起儿童听力下降的常见原因之一.腺样体肥大是导致儿童分泌性中耳炎的常见病因,我科近年来应用腺样体切割吸引器在鼻内镜直视下切除腺样体,配合CO2激光鼓膜打孔治疗儿童分泌性中耳炎取得了较好的疗效,现报道告如下.马丽晶 王军 叶京英 李秋珍 杨庆文 韩德民 2006中国耳鼻咽喉头颈外科2006,13,9:23
18低龄儿童分泌性中耳炎诊疗进展显示文摘本文简要介绍低龄儿童分泌性中耳炎定义、自然史及预后;系统综述低龄儿童分泌性中耳炎病因、诊断及其治疗。其中病因主要包括机械及功能性阻塞、感染和免疫3个方面;诊断强调临床表现和耳镜检查、声导抗测试、听力筛查及检查的综合结果;治疗涵括观察、药物、物理和手术治疗4个方面。陈敏 张雪溪 刘薇 杨扬 郝津生 张杰 2016中国耳鼻咽喉头颈外科2016,23,8:22
19Forming limits under multi-index constraints in NC bending of aluminum alloy thin-walled tubes with large diameters显示文摘With increasing diameters of aluminum alloy thin-walled tubes (AATTs), the tube forming limits, i.e. the minimum bending factors, and their predictions under multi-index constraints including wrinkling, thinning and flattening have been being a key problem to be urgently solved for improving tube forming potential in numerical control (NC) bending processes of AATTs with large diameters. Thus in this paper, a search algorithm of the forming limits is put forward based on a 3D elastic-plastic finite element (FE) model and a wrinkling energy prediction model for the bending processes under axial compression loading (ACL) or not. This algorithm enables to be considered the effects of process parameter combinations including die, friction parameters on the multi-indices. Based on this algorithm, the forming limits of the different size tubes are obtained, and the roles of the process parameter combinations in enabling the limit bending processes are also revealed. The followings are found: the first, within the appropriate ranges of friction and clearances between the different dies and the tubes enabling the bending processes with smaller bending factors, the ACL enables the tube limit bending processes after a decrease of the mandrel ball thickness and diameters; then, without considering the effects of the tube geometry sizes on the tube constitutive equations, the forming limits will be decided by the limit thinning values for the tubes with diameters smaller than 80 mm, while the wrinkling for the tubes with diameters no less than 80 mm. The forming limits obtained from this algorithm are smaller than the analytical results, and reduced by 57.39%; the last, the roles of the process parameter combinations in enabling the limit bending processes are verified by experimental results.YAN Jing, YANG He, ZHAN Mei & LI Heng College of Materials Science and Engineering, State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China 2010Science China(Technological Sciences)2010,53,2:21
20栓皮栎体胚诱导关键影响因素研究显示文摘Immature zygotic embryos of Quercus variabilis were as explants to induce somatic embryogenesis. Several factors influencing somatic embryogenesis have been assayed. Somatic embryos can be induced in MS and WPM basal medium, but there was more quantity, big size and high induction rate in MS medium. Induction rate was not significant cultured in light and dark condition. Zygotic embryos, collected in middle of July, gave higher rate of somatic embryogenesis than those collected on the earlier or later date. By adding 6-BA in medium individually, somatic embryogenesis appeared directly on the zygotic embryos without detectable callus. Secondary embryogenesis appeared in medium with 2,4-D individual or combined with 6-BA or TDZ. High induction frequency of 90% was achieved in MS medium supplemented with 0.5 mg·L -1 6-BA and 2,4-D, whereas the rate in hormone-free medium was only 16.7%. The genotypes of mother trees had an great impact on the inducing rate. Zygotic embryo surgery treatments were not favorable to embryogenesis. It was best to inoculate with entire zygotic embryos. The hypocotyl was a crucial part on somatic embryogenesis for Q. variabilis.张存旭 姚增玉 赵忠 2005林业科学2005,41,2:20
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