Ten years （from 2005 to 2014） of satellite sea surface temperature （SST） data from the Advanced Very High Resolution Radiometer （AVHRR） are analyzed to reveal the monthly changes in surface cold patches （SCPs）...Ten years （from 2005 to 2014） of satellite sea surface temperature （SST） data from the Advanced Very High Resolution Radiometer （AVHRR） are analyzed to reveal the monthly changes in surface cold patches （SCPs） in the main areas of the Northern Yellow Sea （NYS）. The Canny edge detection algorithm is used to identify the edges of the patches. The monthly changes are de- scribed in terms of location, temperature and area. The inter-annual variations, including changes in the location and area of the SCPs from 2010 to 2014, are briefly discussed. The formation mechanisms of the SCPs in different periods are systematically analyzed using both in situ data and numerical simulation. The results show that from May to October, the location and area of the SCPs re- main stable, with a north-south orientation. The SCPs altogether cover about I° of longitude （124°E-125°E） in width and 2° of lati- tude （37.5°N-39.5°N） in length. In November, the SCP separates from the Jangsan Cape and forms a closed, isolated, and approxi- mately circular cold patch in the central NYS. From May to October, the upweUing that leads to the formation of the SCP is mainly triggered by the headland residual current, wind field, climbing movement of the current and secondary circulation at the tide front. In November, cyclonic circulation in the NYS is primarily responsible for generating the upwelling that leads to the formation of the closed and isolated SCE展开更多
The daily and monthly-mean characteristics of cold water patches （CWPs） off the Jiangsu coast in 35 a of 1982-2016 are examined based on advanced very high resolution radiometer （AVHRR） data. Most of the CWPs are ...The daily and monthly-mean characteristics of cold water patches （CWPs） off the Jiangsu coast in 35 a of 1982-2016 are examined based on advanced very high resolution radiometer （AVHRR） data. Most of the CWPs are found to occur in the warm and hot months （May-September）, with some CWPs in the cool and cold months （October-April）. The average radius and intensity of the monthly-mean CWPs are about 81 km and 0.6℃, respectively. The average difference in the sea surface temperature （SST） between the centers of the CWPs and the nearshore is about 2.0℃. The correlation analysis between the CWPs, winds and tides indicates that most of the CWPs occurred during the southerly winds, with some CWPs occurring during the northerly winds. The average intensity of the CWPs during spring tides is slightly stronger than that during neap tides in the warm and hot months, and the difference is very small in the cool and cold months.展开更多
为提供一种全天候路面坑槽修补材料,采用多种矿质黏土和3种稀释剂制备冷补沥青混合料.通过标准马歇尔试验、浸水马歇尔试验、低温和易性试验、冻融劈裂试验和车辙试验等室内试验,系统地研究了冷补沥青混合料的路用性能.结果表明,稀释剂...为提供一种全天候路面坑槽修补材料,采用多种矿质黏土和3种稀释剂制备冷补沥青混合料.通过标准马歇尔试验、浸水马歇尔试验、低温和易性试验、冻融劈裂试验和车辙试验等室内试验,系统地研究了冷补沥青混合料的路用性能.结果表明,稀释剂对冷补沥青混合料的马歇尔强度和低温和易性具有一定影响.加入重油可以提高混合料的马歇尔强度,但是重油的加入量过多则会影响混合料的低温和易性,因此,将柴油-重油作为最佳稀释剂.矿质黏土制备的冷补沥青混合料路用性能良好,马歇尔强度不小于4.43 k N,残留稳定度不小于85%,冻融劈裂强度比大于80%,动稳定度大于907.781次/mm.矿质黏土改性沥青的过程仅为物理混合过程,加入矿质黏土后沥青表面呈现不规则波状结构.展开更多
基金supported by the National Natural Science Foundation of China (No.41276041)the NSFC–Shandong Joint Fund for Marine Science Research Centers (No.U1406404)
文摘Ten years （from 2005 to 2014） of satellite sea surface temperature （SST） data from the Advanced Very High Resolution Radiometer （AVHRR） are analyzed to reveal the monthly changes in surface cold patches （SCPs） in the main areas of the Northern Yellow Sea （NYS）. The Canny edge detection algorithm is used to identify the edges of the patches. The monthly changes are de- scribed in terms of location, temperature and area. The inter-annual variations, including changes in the location and area of the SCPs from 2010 to 2014, are briefly discussed. The formation mechanisms of the SCPs in different periods are systematically analyzed using both in situ data and numerical simulation. The results show that from May to October, the location and area of the SCPs re- main stable, with a north-south orientation. The SCPs altogether cover about I° of longitude （124°E-125°E） in width and 2° of lati- tude （37.5°N-39.5°N） in length. In November, the SCP separates from the Jangsan Cape and forms a closed, isolated, and approxi- mately circular cold patch in the central NYS. From May to October, the upweUing that leads to the formation of the SCP is mainly triggered by the headland residual current, wind field, climbing movement of the current and secondary circulation at the tide front. In November, cyclonic circulation in the NYS is primarily responsible for generating the upwelling that leads to the formation of the closed and isolated SCE
基金The National Natural Science Foundation of China under contract Nos 41076048,41376012 and 41206163the Fundamental Research Funds for the Central Universities under contract No.2011B05714
文摘The daily and monthly-mean characteristics of cold water patches （CWPs） off the Jiangsu coast in 35 a of 1982-2016 are examined based on advanced very high resolution radiometer （AVHRR） data. Most of the CWPs are found to occur in the warm and hot months （May-September）, with some CWPs in the cool and cold months （October-April）. The average radius and intensity of the monthly-mean CWPs are about 81 km and 0.6℃, respectively. The average difference in the sea surface temperature （SST） between the centers of the CWPs and the nearshore is about 2.0℃. The correlation analysis between the CWPs, winds and tides indicates that most of the CWPs occurred during the southerly winds, with some CWPs occurring during the northerly winds. The average intensity of the CWPs during spring tides is slightly stronger than that during neap tides in the warm and hot months, and the difference is very small in the cool and cold months.
文摘[目的]系统评价不同中医适宜技术对寒湿痹阻型膝痹病患者的干预效果,为临床实践提供循证依据。[方法]检索英文数据库PubMed、Web of Science Core Collection、CINAHL Complete、Embase、Science Direct、Cochrane Library,中文数据库中国知网、万方、维普和中国生物医学文献数据库中关于中医适宜技术对寒湿痹阻型膝痹病患者干预效果的文献,检索时限为2019年1月1日至2024年7月18日,由2名研究者独立筛选文献,并进行资料提取和文献质量评价。采用RevMan 5.4软件进行传统Meta分析,Stata 17.0软件进行网状Meta分析。[结果]最终纳入33项研究,共3154例患者,13种中医适宜技术。网状Meta分析显示,穴位贴敷联合中药熏洗改善膝关节症状的效果最好,累计排序概率图下面积(surface under the cumulative ranking,SUCRA)为92.7%;艾灸联合中药离子导入在提高临床总有效率方面效果最好,SUCRA为86.8%。[结论]现有研究表明,穴位贴敷联合中药熏洗能有效改善寒湿痹阻型膝痹病患者膝关节症状,艾灸联合中药离子导入能有效提高临床总有效率,且联合使用不同的中医适宜技术较单一使用效果较好。建议临床医护人员可在中医辨证基础之上,制定多样化的中医适宜技术干预方案,以提高寒湿痹阻型膝痹病患者的临床疗效和护理质量。
文摘为提供一种全天候路面坑槽修补材料,采用多种矿质黏土和3种稀释剂制备冷补沥青混合料.通过标准马歇尔试验、浸水马歇尔试验、低温和易性试验、冻融劈裂试验和车辙试验等室内试验,系统地研究了冷补沥青混合料的路用性能.结果表明,稀释剂对冷补沥青混合料的马歇尔强度和低温和易性具有一定影响.加入重油可以提高混合料的马歇尔强度,但是重油的加入量过多则会影响混合料的低温和易性,因此,将柴油-重油作为最佳稀释剂.矿质黏土制备的冷补沥青混合料路用性能良好,马歇尔强度不小于4.43 k N,残留稳定度不小于85%,冻融劈裂强度比大于80%,动稳定度大于907.781次/mm.矿质黏土改性沥青的过程仅为物理混合过程,加入矿质黏土后沥青表面呈现不规则波状结构.
