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The Distribution of Surface Karst Features in the Bakony Region (Transdanubian Mountains, Hungary) 预览
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作者 Marton VERESS Szilard VETeSI-FOITH 《地质研究(英文)》 2019年第1期21-35,共15页
The surface karst of the Bakony Region is described. VES measurements were applied to study the cover and the morphology of the bedrock. A karstmorphological mapping was also performed. A relation was established betw... The surface karst of the Bakony Region is described. VES measurements were applied to study the cover and the morphology of the bedrock. A karstmorphological mapping was also performed. A relation was established between the karst types and block types in the mountains. The karstification of the mountains was affected by the block structure of the mountains, the mounds of the uneven bedrock, the presence of superficial deposits and their young denudation. As a result of the above mentioned facts, the karst of the mountains is varied. Soil-covered karst is wide spread in the mountains, but the specific features of this type (solution dolines) only occur on threshold surfaces at the margin of the mountains and on dolomite. The concealed karst was mainly formed on horsts elevated to summit position, but it can also be found on threshold surfaces and on horsts in summit position. Its features are subsidence dolines and depressions of superficial deposit. Cryptokarst and buried karst can be created by gravelly cover or basalt. Where the cover is gravel, epigenetic valleys develop with opened-up phreatic cavities. Where the cover is basalt, ponors develop at its margin, while inside, where the basalt thins out, caprock dolines are formed. 展开更多
关键词 Block TYPE KARST TYPE SUBSIDENCE doline CAPROCK doline Ponor GORGE
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Clinical characteristics of human adenovirus type 7 pneumonia and genetic characteristics of human adenovirus type 7
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作者 李小芳 《中国医学文摘:内科学分册(英文版)》 2019年第2期97-98,共2页
Objective To better understand the clinical featuresof human adenovirus type 7 (hAdV7) pneumonia and toidentify whether there is a variation in the genome of thestrain ( CHN/BeiJing /2018 ) isolated during the smallsc... Objective To better understand the clinical featuresof human adenovirus type 7 (hAdV7) pneumonia and toidentify whether there is a variation in the genome of thestrain ( CHN/BeiJing /2018 ) isolated during the smallscaleepidemic. Methods Forty-two patients were diagnosedwith hAdV7 pneumonia between October 27th,2017 and February 28th,2018. They were all males withan average age of (21 ± 2) years. Demographic and clinicaldata were reviewed and analyzed in detail. The nucleicacid of the epidemic strain was extracted from abronchoalveolar lavage fluid sample. Whole genome sequencing(WGS ) was then performed and sequenceswere compared with other hAdV7 strains distributed globally.Phylogenetic tree analysis was conducted based onwhole genome sequences of the epidemic strain. 展开更多
关键词 Clinical CHARACTERISTICS of HUMAN ADENOVIRUS TYPE 7 PNEUMONIA and GENETIC CHARACTERISTICS of HUMAN ADENOVIRUS TYPE 7
Bone health in diabetes and prediabetes 预览
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作者 Silvia Costantini Caterina Conte 《世界糖尿病杂志:英文版(电子版)》 2019年第8期421-445,共25页
Bone fragility has been recognized as a complication of diabetes,both type 1 diabetes (T1D) and type 2 diabetes (T2D),whereas the relationship between prediabetes and fracture risk is less clear.Fractures can deeply i... Bone fragility has been recognized as a complication of diabetes,both type 1 diabetes (T1D) and type 2 diabetes (T2D),whereas the relationship between prediabetes and fracture risk is less clear.Fractures can deeply impact a diabetic patient’s quality of life.However,the mechanisms underlying bone fragility in diabetes are complex and have not been fully elucidated.Patients with T1D generally exhibit low bone mineral density (BMD),although the relatively small reduction in BMD does not entirely explain the increase in fracture risk.On the contrary,patients with T2D or prediabetes have normal or even higher BMD as compared with healthy subjects.These observations suggest that factors other than bone mass may influence fracture risk.Some of these factors have been identified,including disease duration,poor glycemic control,presence of diabetes complications,and certain antidiabetic drugs.Nevertheless,currently available tools for the prediction of risk inadequately capture diabetic patients at increased risk of fracture.Aim of this review is to provide a comprehensive overview of bone health and the mechanisms responsible for increased susceptibility to fracture across the spectrum of glycemic status,spanning from insulin resistance to overt forms of diabetes.The management of bone fragility in diabetic patient is also discussed. 展开更多
关键词 BONE FRACTURES TYPE 1 DIABETES TYPE 2 DIABETES PREDIABETES DIABETES complications BONE density HYPOGLYCEMIC agents
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Volume Difference Inequalities for the Polars of Mixed Complex Projection Bodies 预览
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作者 Han Bo Zhang Yuan-yuan +1 位作者 Wang Wei-dong Rong Xiao-chun 《数学研究通讯:英文版》 CSCD 2019年第2期149-158,共10页
In this paper, based on the notion of mixed complex projection and generalized the recent works of other authors, we obtain some volume difference inequalities containing Brunn-Minkowski type inequality, Minkowski typ... In this paper, based on the notion of mixed complex projection and generalized the recent works of other authors, we obtain some volume difference inequalities containing Brunn-Minkowski type inequality, Minkowski type inequality and Aleksandrov-Fenchel inequality for the polars of mixed complex projection bodies. 展开更多
关键词 mixed complex PROJECTION body polar VOLUME DIFFERENCE Brunn-Minkowski TYPE INEQUALITY MINKOWSKI TYPE INEQUALITY
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Association between serum uric acid and large-nerve fiber dysfunction in type 2 diabetes:a cross-sectional study
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作者 Tian-Nan Jiang Yu-Feng Li +4 位作者 Li-Li Huo Qian Zhang Lian-Ying Wang Cui-Ling Zhao Li-Ge Liu 《中华医学杂志:英文版》 SCIE CAS CSCD 2019年第9期1015-1022,共8页
Background:Large-nerve fiber dysfunction,as assessed by vibration perception threshold (VPT) predicts risks of ulceration,amputation,and mortality in diabetes.Serum uric acid (UA) is closely associated with various me... Background:Large-nerve fiber dysfunction,as assessed by vibration perception threshold (VPT) predicts risks of ulceration,amputation,and mortality in diabetes.Serum uric acid (UA) is closely associated with various metabolic disorders,especially diabetes.Thus,we sought to investigate the clinical relevance of UA to large-nerve fiber dysfunction,among patients with type 2 diabetes (T2D).Methods:Medical records of consecutive patients with T2D who were admitted to Beijing Friendship Hospital Pinggu Campus between May 2014 and December 2016 were collected.Data for the 824 eligible patients included in the final analysis were extracted using a structured form.A VPT value ≥15 in either foot was defined as abnormal.We compared the clinical characteristics between patients with abnormal VPT and those with normal VPT (VPT value <15 in both feet) in the overall population and in gender subgroups.Logistic regression analysis was performed to explore the association of abnormal VPT with UA level.One-way analysis of variance was used to compare VPT values across four UA quartiles.Results:UA levels were significantly lower in T2D patients with abnormal VPT than in those with normal VPT (294.5 ± 84.0 vs.314.9 ± 92.8 μmol/L,P<0.01),especially among male patients (311.7 ± 85.2 vs.336.9 ± 89.6 μmol/L,P<0.01).From the logistic regression analysis,hyperuricemia (males >420 μmol/L;females >360 μmol/L) was associated with a reduced risk of abnormal VPT (odds ratio [OR],0.60;95% confidence interval [CI],0.39–0.91;P<0.05).This association was robust in male patients (OR,0.43;95% CI,0.24–0.76;P<0.01) but not in female patients (OR,0.92;95% CI,0.47–1.82;P = 0.816),even after adjustment for confounding factors.For the younger male subgroup (age <65 years),VPT values decreased as the UA level increased (P for trend = 0.002),but this trend was not significant in older male subgroup (age ≥65 years;P for trend = 0.400).Conclusions:Low serum UA levels showed a significant association with an increased risk of large-nerve fibe 展开更多
关键词 PERIPHERAL NEUROPATHY Uric ACID Type 2 DIABETES
Paleogeomorphic Influence on Facies Characteristics and Reservoir Prediction in Lacustrine Basin—By Taking Cretaceous Reservoirs in the Western Slope of SL Basin,China as an Example 预览
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作者 Longtao Cui Qianping Zhang +2 位作者 Xue Liu Ming Yang Jianmin Zhu 《长江油气(英文版)》 2019年第2期113-124,共12页
The West Slope of SL Basin,China,mainly targets on lithologic reservoirs for oil and gas.The paleogeomorphology and provenance direction analysis has great significance for predicting the type and distribution of sand... The West Slope of SL Basin,China,mainly targets on lithologic reservoirs for oil and gas.The paleogeomorphology and provenance direction analysis has great significance for predicting the type and distribution of sand body.According to the analysis of well logging,core and seismic data,braided delta and gravity sediment mainly develop in the study area.A backs tripping method is used to reconstruct the topography of Qingshankou to Yaojia Formation,Cretaceous.The West Slope is mainly controlled by two slope belts in Qingshankou Formation,with the width of upper slope 12-18 km and the gradient 0.7-0.8 degrees,the width of lower slope 13-15 km and the gradient 1.0 degrees.The West Slope is controlled by a single slope belt in Yaojia Formation,with the lower slope width of 13-16 km and the gradient 0.4 degrees.The relationship between the slope belt,provenance direction and sand body distribution is analyzed,and result shows that the combination of upper and lower slope controls the distribution of reservoir types,and the provenance supply rate controls the scale of sand body.The gravity flow develops when the provenance direction is parallel to slope direction,and the slope becomes transporting channel in vertical to provenance direction.The paleogeomorphology,lake level and provenance direction are the main control factors of sand body in West Slope. 展开更多
关键词 SL BASIN Paleogeomorphology SLOPE Belt SEDIMENTARY Type
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写作的责任:探索生活隐秘 维护人的尊严 预览
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作者 王鹏程 《沈阳师范大学学报:社会科学版》 2019年第2期8-13,共6页
大概都不否认,我们当下的文学写作'缺乏呼唤爱、引向善、看取光明的能力,缺乏辨别是非善恶的能力,缺乏正面造就人的能力',表现出类型化、浅表化、同质化和空心化的特征。究其原因,这既由于历史的惯性、现实的拖拽,也因为20世纪... 大概都不否认,我们当下的文学写作'缺乏呼唤爱、引向善、看取光明的能力,缺乏辨别是非善恶的能力,缺乏正面造就人的能力',表现出类型化、浅表化、同质化和空心化的特征。究其原因,这既由于历史的惯性、现实的拖拽,也因为20世纪以来现代主义文学的影响。这些因素导致我们的写作缺乏对人的维护,缺少对人的信心,无论是创作主体,还是作品中的人物,都表现出'干枯化'的倾向。在历史的混沌与现实的迷乱中,在艰难时世的奔波挣扎中,文学书写的使命也许就在于不重复生活,挖掘探索生活的隐秘,维护那一点未能丧失殆尽的尊严和希望,坚定那点些微的期许与自信,成为通向一个时代的起点和开端。 展开更多
关键词 文学写作 类型化 干枯 责任 隐秘 尊严
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Type Synthesis of Lower Mobility Parallel Mechanisms: A Review
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作者 Wei Ye Qinchuan Li 《中国机械工程学报:英文版》 SCIE EI CAS CSCD 2019年第2期13-23,共11页
Type synthesis of mechanisms aims to systematically determine all possible structures for a specific mobility requirement. Numerous methods based on di erent theories were proposed for type synthesis of lower mobility... Type synthesis of mechanisms aims to systematically determine all possible structures for a specific mobility requirement. Numerous methods based on di erent theories were proposed for type synthesis of lower mobility parallel mechanisms in past decades. However, there does not exist a comprehensive review on these approaches. Therefore, the goal of this paper is to give such a review, classifying the approaches proposed in the literature into three groups, namely, motion-based methods, constraint-based methods, and other methods. The motion-based methods include the Lie group based method, the GF set method, the linear transformation method, the POC set method,and the finite screw method. The constraint-based methods involve the screw theory-based method, the virtual chain method, the method based on Grassmann line geometry and line graphs, and the motion constraint generator method. Other methods contain the enumeration approach based on the general CGK mobility formula and the graph theory method. Upon thoroughly analyzing the characteristics and/or limitations of each method, this review provides a well reference to help researchers find an e ective synthesis method for innovative design and further scientific investigations for mechanisms. 展开更多
关键词 PARALLEL mechanism LOWER MOBILITY TYPE synthesis INNOVATIVE design
分型选择开放式无张力修补术对腹股沟疝的疗效及安全性观察 预览
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作者 王茂强 黄焕基 +3 位作者 孙海峰 陈正修 何灵生 王建宇 《数理医药学杂志》 2019年第2期167-169,共3页
目的:探讨分型选择开放式无张力修补术治疗腹股沟疝的疗效与安全性。方法:选取2014年10月~2016年10月某院收治的腹股沟疝患者96例,按照Gilbert和Rutkow分型标准将研究对象分为1组34例(Ⅰ、Ⅱ型)、2组32例(Ⅲ型)、3组30例(Ⅳ~Ⅶ型)。为... 目的:探讨分型选择开放式无张力修补术治疗腹股沟疝的疗效与安全性。方法:选取2014年10月~2016年10月某院收治的腹股沟疝患者96例,按照Gilbert和Rutkow分型标准将研究对象分为1组34例(Ⅰ、Ⅱ型)、2组32例(Ⅲ型)、3组30例(Ⅳ~Ⅶ型)。为研究对象行分型选择开放式无张力修补术,1组病例行平片修补术,2组病例行填充式网塞修补术,3组病例行腹膜前修补手术,对比临床疗效及安全性。结果:1组、2组、3组腹股沟疝治疗有效率分别为97.1%、96.9%、96.7%,比较各组数据差异无统计学意义(P>0.05);1组、2组、3组并发症发生率分别为11.8%、9.4%、10.0%,比较各组数据差异无统计学意义(P>0.05)。结论:分型选择开放式无张力修补术治疗腹股沟疝患者,疗效满意,安全性佳,值得临床进一步借鉴与应用。 展开更多
关键词 分型 开放式无张力修补术 腹股沟疝 疗效 安全性
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Development of Chinese Traditional Philosophy and Ancient Flower Arrangement Art 预览
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作者 WANG Na 《景观研究:英文版》 2019年第3期93-95,共3页
Traditional philosophical thoughts have different connotations in different historical periods in China. Affected by it, the flower arrangement art has produced different artistic styles: religious flower of the Han, ... Traditional philosophical thoughts have different connotations in different historical periods in China. Affected by it, the flower arrangement art has produced different artistic styles: religious flower of the Han, Wei and Six Dynasties, courtyard flower in the Sui and Tang dynasties, concept flower and mental imagery flower in the Song and Yuan dynasties, and new concept flower, literati flower, pictographic flower and scenery description flower in the Ming and Qing dynasties. 展开更多
关键词 CHINESE TRADITIONAL PHILOSOPHY FLOWER arrangement type FLOWER arrangement ART
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同型半胱氨酸联合D二聚体检测在脑卒中诊治中的临床价值 预览
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作者 王玉萍 《中国现代医生》 2019年第14期124-127,共4页
目的探讨同型半胱氨酸(Hcy)联合D二聚体(D-D)检测在脑卒中诊治中的临床价值。方法纳入2017年5月~2018年5月我院住院部86例脑卒中患者作为观察组研究对象,纳入同时期我院体检中心50例健康志愿者作为对照组研究对象。比较两组入选者血清Hc... 目的探讨同型半胱氨酸(Hcy)联合D二聚体(D-D)检测在脑卒中诊治中的临床价值。方法纳入2017年5月~2018年5月我院住院部86例脑卒中患者作为观察组研究对象,纳入同时期我院体检中心50例健康志愿者作为对照组研究对象。比较两组入选者血清Hcy及血浆D-D水平差异,进一步按照脑卒中类型、脑卒中分期以及病灶直径将观察组患者进行分组,比较血清Hcy及血浆D-D水平差异,并分析Hcy、D-D水平与脑卒中分期以及病灶直径的相关性。结果观察组患者Hcy、D-D水平均高于对照组,差异显著(P<0.05);缺血性脑卒中与出血性脑卒中患者Hcy、D-D水平均高于对照组,差异显著(P<0.05);但缺血性脑卒中与出血性脑卒中患者Hcy、D-D水平并无统计学差异(P>0.05);脑卒中患者Hcy、D-D水平急性期>亚急性期>慢性期,差异显著(P<0.05);经Spearman检验Hcy、D-D与脑卒中病情严重度均呈明显正相关(r=0.781,r=0.542,P<0.05);脑卒中患者Hcy、D-D水平病灶直径>4cm组>病灶直径1.5~4cm组>病灶直径<1.5cm组,差异显著(P<0.05);经Spearman检验Hcy、D-D与脑卒中病灶直径均呈明显正相关(r=0.752,r=0.503,P<0.05)。结论Hcy与D-D检测可作为诊断和评估患者病情的可靠依据,也可指示治疗效果。 展开更多
关键词 脑卒中 HCY D-D 类型 分期 病灶直径
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广东中山传统民居营造技艺初探 预览
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作者 刘军瑞 王斌 莫理生 《建筑遗产》 2019年第2期32-42,共11页
文章综合中山市的地理、方言、民系和行政区划等因素,推测其可能存在不同的文化分区及其对应的建筑营造方式;通过选择样本进行实地测绘和调研,并与工匠口述的营造方法进行比较,得出该地区传统民居可归纳为3种原型:两墙一房、三墙两房和... 文章综合中山市的地理、方言、民系和行政区划等因素,推测其可能存在不同的文化分区及其对应的建筑营造方式;通过选择样本进行实地测绘和调研,并与工匠口述的营造方法进行比较,得出该地区传统民居可归纳为3种原型:两墙一房、三墙两房和四墙三房,以及8种衍生型。文章对当地工匠口头使用的营造术语进行了分类梳理;在营造技术方面对营造尺、尺度控制、砖作、瓦作、小木作等内容进行了初步分析;并对后高和后长、破中禁忌、祭祖空间、数字禁忌等营造习俗做了整理。通过上述调研,初步明确了中山地区传统民居的典型类型及其分布状况,尝试搭建其营造技术和营造习俗体系的基本框架。研究结果可供中山传统民居的保护和修缮项目参考,也为后续对当地宗祠和碉楼的研究积累了材料。 展开更多
关键词 中山传统民居 营造术语 类型 营造技艺 营造习俗
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Type 1 diabetes in a Nigerian family-occurrence in three out of four siblings:A case report 预览
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作者 Michael Adeyemi Olamoyegun Oluwabukola Ayodele Ala 《世界糖尿病杂志:英文版(电子版)》 2019年第10期511-516,共6页
BACKGROUND Most occurrences of type 1 diabetes cases in any population are sporadic rather than familial.Hence,type 1 diabetes among siblings is a rare occurrence.Even more rare is for three or more siblings to develo... BACKGROUND Most occurrences of type 1 diabetes cases in any population are sporadic rather than familial.Hence,type 1 diabetes among siblings is a rare occurrence.Even more rare is for three or more siblings to develop type 1 diabetes.In this report,we describe a case of a Nigerian family in which type 1 diabetes occurred in three siblings among four children with neither parent having diabetes.All three siblings are positive for glutamic acid decarboxylase and anti-islet cell antibodies.CASE SUMMARY There were four siblings(three males and one female)born to a couple without a diagnosis of diabetes.The eldest child(male)was diagnosed with diabetes at the age of 15,the second child(female)was diagnosed at the age of 11 and the fourth child(male)was diagnosed at the age of 9.All the siblings presented with similar osmotic symptoms and were diagnosed of diabetic ketoacidosis.All of them had markedly reduced serum C-peptide levels with high levels of glutamic acid decarboxylase and insulinoma-associated protein-2 antibodies.We could not perform genetic analysis of HLA-DR,DQ and CTLA4 in the siblings as well as the parents;hence haplotypes could not be characterized.Both parents of the probands have no prior history of diabetes,and their blood glucose and glycated hemoglobin levels were within normal ranges.The third child(male)has no history suggestive of diabetes,and his blood glucose and glycated hemoglobin have remained within normal ranges.CONCLUSION Although the occurrence of type 1 diabetes in proband siblings is uncommon,screening for diabetes among siblings especially with islet autoantibodies should be encouraged. 展开更多
关键词 Type 1 DIABETES Siblings Case report NIGERIAN FAMILY
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有限元模拟不同型号的PE100管件热应力分布研究 预览
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作者 孙瑞敬 赵通 汤文浩 《无线互联科技》 2019年第18期119-120,共2页
文章利用有限元软件ANSYS模拟4种不同型号管件在不同温度条件下热应力分布情况,对比约束条件对各型号管件热应力的影响。结果表明:管件的最大等效热应力值随温度的升高而增大,不同型号管件最大等效热应力值随温度变化趋势略有差别;最大... 文章利用有限元软件ANSYS模拟4种不同型号管件在不同温度条件下热应力分布情况,对比约束条件对各型号管件热应力的影响。结果表明:管件的最大等效热应力值随温度的升高而增大,不同型号管件最大等效热应力值随温度变化趋势略有差别;最大等效热应力出现在管件端部,主要原因是管件端部周围区域材料变形不均匀和端部环形截面内外侧应力集中。 展开更多
关键词 PE100管件 有限元模拟 热应力 约束条件 型号
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More anxious than depressed:prevalence and correlates in a 15-nation study of anxiety disorders in people with type 2 diabetes mellitus 预览
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作者 Santosh K Chaturvedi Shayanth Manche Gowda +27 位作者 Helal Uddin Ahmed Fahad D Alosaimi Nicola Andreone Alexey Bobrov Viola Bulgari Giuseppe Carra Gianluca Castelnuovo Giovanni de Girolamo Tomasz Gondek Nikola Jovanovic Thummala Kamala Andrzej Ki Nebojsa Lalic Dusica Lecic-Tosevski Fareed Minhas Victoria Mutiso David Ndetei Golam Rabbani Suntibenchakul Somruk Sathyanarayana Srikanta Rizwan Taj Umberto Valentini Olivera Vukovic Wolfgang Wolwer Larry Cimino Arie Nouwen Cathy Lloyd Norman Sartorius 《综合精神医学(英文)》 CSCD 2019年第4期197-205,共9页
Background Anxiety disorder, one of the highly disabling, prevalent and common mental disorders, is known to be more prevalent in persons with type 2 diabetes mellitus (T2DM) than the general population, and the comor... Background Anxiety disorder, one of the highly disabling, prevalent and common mental disorders, is known to be more prevalent in persons with type 2 diabetes mellitus (T2DM) than the general population, and the comorbid presence of anxiety disorders is known to have an impact on the diabetes outcome and the quality of life. However, the information on the type of anxiety disorder and its prevalence in persons with T2DM is limited. Aims To assess the prevalence and correlates of anxiety disorder in people with type 2 diabetes in different countries. Methods People aged 18-65 years with diabetes and treated in outpatient settings were recruited in 15 countries and underwent a psychiatric interview with the Mini-International Neuropsychiatric Interview. Demographic and medical record data were collected. Results A total of 3170 people with type 2 diabetes (56.2% women;with mean (SD) duration of diabetes 10.01 (7.0) years) participated. The overall prevalence of anxiety disorders in type 2 diabetic persons was 18%;however, 2.8% of the study population had more than one type of anxiety disorder. The most prevalent anxiety disorders were generalised anxiety disorder (8.1%) and panic disorder (5.1%). Female gender, presence of diabetic complications, longer duration of diabetes and poorer glycaemic control (HbA1c levels) were significantly associated with comorbid anxiety disorder. A higher prevalence of anxiety disorders was observed in Ukraine, Saudi Arabia and Argentina with a lower prevalence in Bangladesh and India. Conclusions Our international study shows that people with type 2 diabetes have a high prevalence of anxiety disorders, especially women, those with diabetic complications, those with a longer duration of diabetes and poorer glycaemic control. Early identification and appropriate timely care of psychiatric problems of people with type 2 diabetes is warranted. 展开更多
关键词 type 2 diabetes MELLITUS anxious DEPRESSED
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FVID:Fishing Vessel Type Identification Based on VMS Trajectories 预览
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作者 HUANG Haiguang HONG Feng +3 位作者 LIU Jing LIU Chao FENG Yuan GUO Zhongwen 《中国海洋大学学报:英文版》 SCIE CAS CSCD 2019年第2期403-412,共10页
Vessel Monitoring System(VMS)provides a new opportunity for quantified fishing research.Many approaches have been proposed to recognize fishing activities with VMS trajectories based on the types of fishing vessels.Ho... Vessel Monitoring System(VMS)provides a new opportunity for quantified fishing research.Many approaches have been proposed to recognize fishing activities with VMS trajectories based on the types of fishing vessels.However,one research problem is still calling for solutions,how to identify the fishing vessel type based on only VMS trajectories.This problem is important because it requires the fishing vessel type as a preliminary to recognize fishing activities from VMS trajectories.This paper proposes fishing vessel type identification scheme(FVID)based only on VMS trajectories.FVID exploits feature engineering and machine learning schemes of XGBoost as its two key blocks and classifies fishing vessels into nine types.The dataset contains all the fishing vessel trajectories in the East China Sea in March 2017,including 10031 pre-registered fishing vessels and 1350 unregistered vessels of unknown types.In order to verify type identification accuracy,we first conduct a 4-fold cross-validation on the trajectories of registered fishing vessels.The classification accuracy is 95.42%.We then apply FVID to the unregistered fishing vessels to identify their types.After classifying the unregistered fishing vessel types,their fishing activities are further recognized based upon their types.At last,we calculate and compare the fishing density distribution in the East China Sea before and after applying the unregistered fishing vessels,confirming the importance of type identification of unregistered fishing vessels. 展开更多
关键词 VMS VESSEL type identification FISHING DENSITY TRAJECTORY analysis classification
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Manipulating the Interferon Signaling Pathway: Implications for HIV Infection
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作者 Krystelle Nganou-Makamdop Daniel C. Douek 《中国病毒学:英文版》 CAS CSCD 2019年第2期192-196,共5页
During human immunodeficiency virus(HIV) infection, type I interferon(IFN-I) signaling induces an antiviral state that includes the production of restriction factors that inhibit virus replication, thereby limiting th... During human immunodeficiency virus(HIV) infection, type I interferon(IFN-I) signaling induces an antiviral state that includes the production of restriction factors that inhibit virus replication, thereby limiting the infection. As seen in other viral infections, type I IFN can also increase systemic immune activation which, in HIV disease, is one of the strongest predictors of disease progression to acquired immune deficiency syndrome(AIDS) and non-AIDS morbidity and mortality.Moreover, IFN-I is associated with CD4 T cell depletion and attenuation of antigen-specific T cell responses. Therefore,therapeutic manipulation of IFN-I signaling to improve HIV disease outcome is a source of much interest and debate in thefield. Recent studies have highlighted the importance of timing(acute vs. chronic infection) and have suggested that specific targeting of type I IFNs and their subtypes may help harness the beneficial roles of the IFN-I system while avoiding its deleterious activities. 展开更多
关键词 Human IMMUNODEFICIENCY virus(HIV) Simian IMMUNODEFICIENCY virus(SIV) Type I interferon(IFN-I) Inflammation
整流变压器及其结构和分类 预览
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作者 李莉 耿庆鲁 《氯碱工业》 CAS 2019年第6期1-2,7共3页
简述了整流变压器的定义和用途;介绍了整流变压器的结构和特点,以及整流变压器型号代码;并根据整流变压器所采用的整流电路形式、调压方式、器身安装方式、冷却方式的不同,列举了整流变压器不同的类别及相应的分类方法。
关键词 氯碱 整流变压器 结构 类型
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Comparison of gene expression in cynomolgus monkeys with preclinical type II diabetes induced by different high energy diets 预览
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作者 Li-Sha Jin Jun-Hua Rao +6 位作者 Li-Biao Zhang Fang Ji Yan-Chun Zhang Xiang-Fen Hao Bai-Lu Peng Xiao-Ming Liu Yun-Xiao Sun 《动物模型与实验医学(英文)》 CSCD 2019年第1期44-50,共7页
Background:C ynomolgus disease models that are similar to the preclinical stage of human type 2 diabetes mellitus(T2 DM)were established by feeding middle-aged cynomolgus monkeys different high energy diets to study t... Background:C ynomolgus disease models that are similar to the preclinical stage of human type 2 diabetes mellitus(T2 DM)were established by feeding middle-aged cynomolgus monkeys different high energy diets to study the differential expression of diabetes-related genes.Methods:A total of 36 male monkeys were randomly divided into four groups and fed human diets with high sugar,high fat,double high sugar and fat,and a normal diet.The preclinical diabetes phase was determined by monitoring the metabolic characteristic indices and the results of oral glucose tolerance tests(OGTT).The mRNA expression of 45 diabetes-related genes in peripheral blood leukocytes was analyzed using real-time PCR.Results:A total of 22,25,and 21 genes were significantly up-regulated(P<0.05)and 5,7,and 5 genes were significantly down-regulated(P<0.05)in the above three induced groups,respectively,compared with the control group.Of the 45 tested genes,the expression profiles of 21 genes were consistent.Most of the expression levels in the double high sugar-and-fat individuals were slightly lower than those in the high glucose and high fat groups,although the expression patterns of the three groups were essentially similar.Conclusion:T he different high energy diets all induced diabetes and shared some phenotypic properties with human T2 DM.Most of the expression patterns of the related genes were identical.The gene expression profiles could be used as references for the study of early diagnostic indicators and T2 DM pathogenesis. 展开更多
关键词 CYNOMOLGUS MONKEY gene expression high energy DIET PRECLINICAL phase type 2 diabetes
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老年人学习需求类型的研究--基于浙江老年人 预览 被引量:1
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作者 喻燕刚 《科教导刊》 2019年第11期150-151,共2页
为了了解老年人参加老年大学学习的需求,为老年教育提供建议和参考,本研究通过定量的方式,采用探索性因素分析的方法,发现老年人参加老年学习的需求主要有三大类:追求社会贡献的需求,追求生活品质的需求,追求人际交往的需求。
关键词 老年人 学习需求 类型
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