Seafloor extension and associated rifting in the North Atlantic Area, which started in Early Paleogene (from −62 Ma), resulted in a few micro-continents being isolated and submerged below sea levels. Published isotopi...Seafloor extension and associated rifting in the North Atlantic Area, which started in Early Paleogene (from −62 Ma), resulted in a few micro-continents being isolated and submerged below sea levels. Published isotopic data for sunken offshore continental materials (basement) in the North Atlantic area are quite sparse, but a few do exist for the Rockall Plateau, or more precisely the Rockall Bank. Isotopic data for Early Paleogene basaltic materials, covering basement rocks of the Rockall Plateau, have hitherto only been publicised for the NW margin of the Hatton bank. The Early Paleogene basaltic archipelago of the Faroe Islands, on which some isotopic data do exist, rests on an ancient sunken continental crust of unknown geochemical and isotopic compositions. The objective of this contribution is to assess potential lead isotopic relationships between the Rockall Plateau and the Faroese sub-basaltic basement, based on the sparse available isotopic data existing for the former and using available isotopic data for slightly contaminated Faroese basaltic rocks. The results reached in this contribution point to a likely association between the Faroese sub-basaltic basement and the basement of the Rockall Bank and hence the Rockall Plateau and potentially also between Faroese basaltic rocks and contemporaneous counterparts from the Hatton Bank.展开更多
A systematic experimental research work is done for the stability of sunken large diameter cylinder during construction period. It is the first research that gives the method for assessing the stability of the larger ...A systematic experimental research work is done for the stability of sunken large diameter cylinder during construction period. It is the first research that gives the method for assessing the stability of the larger diameter cylindrical structure, a set of values is derived also for the critical stability indices of the large diameter cylinder sunken to the sandy seabed.展开更多
Sunken yaodongs, or sunken yaodong houses, in Guanzhong are typical representatives of traditional Chinese dwellings. This paper analyzed the characteristics and existing problems of yaodongs, and put forward the idea...Sunken yaodongs, or sunken yaodong houses, in Guanzhong are typical representatives of traditional Chinese dwellings. This paper analyzed the characteristics and existing problems of yaodongs, and put forward the idea of the organic renewal of sunken yaodongs with Dengjiapo Village in Yongshou County, Xianyang, Shaanxi as the research object.展开更多
With reference to the existing research in the field of historical building evaluation, this study introduced the theory of landscape evaluation, constructed an index evaluation system by using the analytic hierarchy ...With reference to the existing research in the field of historical building evaluation, this study introduced the theory of landscape evaluation, constructed an index evaluation system by using the analytic hierarchy process(AHP), calculated the relative weight of the judgment matrix by using the pairwise comparison, and assigned each index factor to determine the landscape evaluation scores of traditional residences. Based on the investigation of the sunken cave dwellings in Baishe Village, Sanyuan County, Shaanxi Province, the traditional residence landscape evaluation system was applied in practice, the evaluation results were analyzed, and suggestions for protection and development were put forward.展开更多
Trace is the important composition structure of printed circuit board,w hich connects the devices,it is also the module that taking up the highest proportion,thus,it is the major testing target of quality assurance. T...Trace is the important composition structure of printed circuit board,w hich connects the devices,it is also the module that taking up the highest proportion,thus,it is the major testing target of quality assurance. The sunken defects proposed in this paper is a w idth abnormity defect on the FPC trace,w hich w ould cause the latent open circuit defect and affect the electrical function of circuit. The problem of flexible deformation and w idth difference make the FPC trace detection harder. Therefore,this paper proposed a detection scheme combined w ith linear masks and circle distribution characteristic. Firstly,this scheme preprocessed the acquired FPC image,divided the trace into several sub-regions and obtained the line w idth values of each trace transverse section. Then the line w idth sequences w ere searched w ith the linear difference template of gray scale. Thus,the sunken defects alternative positions w ere located. Lastly,the circle distribution characteristic is defined to identify the real defect areas from the alternative regions acquired from the previous step. Thus,the detection of sunken defects on the FPC trace w as accomplished.The algorithm w as tested in the self-built image database,w hich show s the better detection performance than the other typical algorithms.展开更多
Under the background of stock planning,fine planning promotes intensive and efficient utilization to become an important measure of urban space utilization.The three-dimensional development of urban public space promo...Under the background of stock planning,fine planning promotes intensive and efficient utilization to become an important measure of urban space utilization.The three-dimensional development of urban public space promotes the emergence and gradual growth of urban sunken square.However,there are many problems in the design of urban sunken square.In order to have a clear understanding of the current situation between the sunken square and the surrounding environment in the domestic mega city,the Shanghai Wujiaochang Sunken Square was selected for field investigation and questionnaire survey to understand the main problems and advantages and disadvantages in this case.The common problems were summarized and the disadvantages of the lack of integration between the sunken square and the surrounding environment were obtained and the role of integration of the two was clarified.It is expected that the design points of sunken square and surrounding environment integration can provide guidance for the follow-up design.展开更多
AIM:To investigate the prevalence and types of eyelid disorders among an elderly population in China,underscoring the significance of eyelid health for the aging demographic.METHODS:A cross-sectional epidemiological s...AIM:To investigate the prevalence and types of eyelid disorders among an elderly population in China,underscoring the significance of eyelid health for the aging demographic.METHODS:A cross-sectional epidemiological survey was conducted on 3038 individuals over the age of 50,all of whom were evaluated at the community health center.Each participant underwent routine ophthalmic examinations and eyelid morphology evaluations by an ophthalmologist.Eyelid disorders and morphology were assessed through slit-lamp examination and direct visual inspection.The study analyzed the characteristics of common eyelid disorders,including blepharoptosis,dermatochalasis,eyelid tumors,entropion,lower eyelid retraction(LER)and ectropion,as well as eyelid morphologies such as sunken and bulging eyelids.Descriptive statistics were used for demographic data,Chi-square test analyzed gender distribution differences,and logistic regression calculated odds ratios for blepharoptosis(P<0.05 considered significant).RESULTS:The study revealed that eyelid disorders were present in 1250(41%)individuals,with blepharoptosis being the most common disorder(25%),followed by severe dermatochalasis(16%),eyelid tumors(9.3%),LER and ectropion(11%),and entropion(1.2%).Sunken eyelids were more prevalent in men(26%)than in women(17%).The study found significant associations between the presence of blepharoptosis and sunken upper eyelids[P=0.01,odds ratio(OR)=1.33],as well as male gender(P=0.038,OR=1.22).Additionally,the prevalence of blepharoptosis increased with age.CONCLUSION:Eyelid disorders are highly prevalent in older people and increase steeply with age.This study highlights the need for increased awareness of eyelid health among older individuals at risk for eyelid disorders and the importance of ophthalmic examination for early diagnosis and management of these disorders.展开更多
东部高潜水位矿区是我国重要的矿粮复合产区,采用井工开采方式造成其地表发生不均匀沉降,形成大量小面积、破碎化的沉陷积水区,沉陷水位的动态变化严重影响着矿区的生态和生产安全。精准监测沉陷水位对于东部高潜水位矿区开展湿地生态...东部高潜水位矿区是我国重要的矿粮复合产区,采用井工开采方式造成其地表发生不均匀沉降,形成大量小面积、破碎化的沉陷积水区,沉陷水位的动态变化严重影响着矿区的生态和生产安全。精准监测沉陷水位对于东部高潜水位矿区开展湿地生态治理和水灾风险预测等工作至关重要。为此,在现有卫星测高技术的基础上,提出了一种基于多源卫星观测的矿区破碎化沉陷水体水位监测方法。以兖州矿区为研究对象,深入分析ICESat-2(Ice,Cloud and land Elevation Satellite-2)和GEDI(Global Ecosystem Dynamics Investigation)卫星观测数据集之间的相关性,并建立回归模型,利用该模型对GEDI观测数据集进行校正,通过融合多源卫星的观测数据集,实现矿区沉陷水位更高密度和更高精度的监测。结果表明:①ICESat-2卫星高度计的水位监测精度更佳,可以作为评价和修正GEDI数据的基础,而GEDI在监测水体的数量方面具有更大的优势;②ICESat-2与GEDI观测数据集之间存在显著的相关性,而地表交叉观测点数量的不足对于回归关系的拟合影响较小,借助回归模型能够有效地校正GEDI卫星的水位观测数据,使其水位测量的平均误差、平均绝对误差和均方根误差与校正前相比分别降低了69.74%、56.58%、50.56%;③通过融合ICESat-2与GEDI观测数据集,在水位监测中,展现出了较高的覆盖率和监测精度,监测水体覆盖率达到总体的88.89%,水位测量的平均误差、平均绝对误差以及均方根误差分别为0.10、0.17、0.26 m。总体而言,基于多源卫星观测的矿区沉陷水体水位监测方法能够满足矿区小面积、零散分布的水体水位监测的需求,并在其他需要高密度测量的问题中也具有应用潜力。展开更多
Aim:We investigated the clinical application of autologous chyle fat in the correction of sunken upper eyelid.Methods:From November 2020 to October 2021,89 cases of correction with autologous chyle fat to sunken upper...Aim:We investigated the clinical application of autologous chyle fat in the correction of sunken upper eyelid.Methods:From November 2020 to October 2021,89 cases of correction with autologous chyle fat to sunken upper eyelid were performed(with or without other cosmetic procedures related to the eyes).An appropriate amount of fat was extracted from the superficial layer of the patient’s thigh and processed to chyle fat.About 0.5-2.8 mL of fat was injected under the orbicularis oculi muscle(roof-retro orbicularis oculi fat)or in the area where the orbital septal fat exists from the outer orbital margin of the upper eyelid.Results:In total,59 patients were followed up for 1-11 months after surgery.No infection,necrosis,vascular embolism,upper eyelid lumpiness,fat calcification,or liquefaction occurred in all patients,while seven cases showed inadequate correction.The depression basically disappeared,the shape was relatively full,the youthfulness was greatly improved,and the satisfaction of patients was high during the follow-up period.Conclusion:The correction with autologous chyle fat to sunken upper eyelid showed little trauma,short recovery periods,and satisfactory results,and it is worthy of being popularized and applied more widely.展开更多
China’s salvage of a shipwreck sheds light on a forgotten marine trade route ~i~ ~ ~ Few things attract interest in history more than a sunken shipwreck. But the survival of wooden ships underwater is a matter of luc...China’s salvage of a shipwreck sheds light on a forgotten marine trade route ~i~ ~ ~ Few things attract interest in history more than a sunken shipwreck. But the survival of wooden ships underwater is a matter of luck,with oxidization taking its toll and marine organ- isms capable of eating a vessel completely unless buried under specific geological conditions such as extreme cold or under a covering of silt.展开更多
文摘Seafloor extension and associated rifting in the North Atlantic Area, which started in Early Paleogene (from −62 Ma), resulted in a few micro-continents being isolated and submerged below sea levels. Published isotopic data for sunken offshore continental materials (basement) in the North Atlantic area are quite sparse, but a few do exist for the Rockall Plateau, or more precisely the Rockall Bank. Isotopic data for Early Paleogene basaltic materials, covering basement rocks of the Rockall Plateau, have hitherto only been publicised for the NW margin of the Hatton bank. The Early Paleogene basaltic archipelago of the Faroe Islands, on which some isotopic data do exist, rests on an ancient sunken continental crust of unknown geochemical and isotopic compositions. The objective of this contribution is to assess potential lead isotopic relationships between the Rockall Plateau and the Faroese sub-basaltic basement, based on the sparse available isotopic data existing for the former and using available isotopic data for slightly contaminated Faroese basaltic rocks. The results reached in this contribution point to a likely association between the Faroese sub-basaltic basement and the basement of the Rockall Bank and hence the Rockall Plateau and potentially also between Faroese basaltic rocks and contemporaneous counterparts from the Hatton Bank.
文摘A systematic experimental research work is done for the stability of sunken large diameter cylinder during construction period. It is the first research that gives the method for assessing the stability of the larger diameter cylindrical structure, a set of values is derived also for the critical stability indices of the large diameter cylinder sunken to the sandy seabed.
基金Sponsored by Fundamental Research Funds for the Central Universities(2452017103,2452018140)Humanities and Social Sciences Project of Northwest A&F University(2015RWYB37,2015RWYB39)
文摘Sunken yaodongs, or sunken yaodong houses, in Guanzhong are typical representatives of traditional Chinese dwellings. This paper analyzed the characteristics and existing problems of yaodongs, and put forward the idea of the organic renewal of sunken yaodongs with Dengjiapo Village in Yongshou County, Xianyang, Shaanxi as the research object.
基金Sponsored by Humanities and Social Sciences Project of Northwest A&F University(Z109021506Z109021705)
文摘With reference to the existing research in the field of historical building evaluation, this study introduced the theory of landscape evaluation, constructed an index evaluation system by using the analytic hierarchy process(AHP), calculated the relative weight of the judgment matrix by using the pairwise comparison, and assigned each index factor to determine the landscape evaluation scores of traditional residences. Based on the investigation of the sunken cave dwellings in Baishe Village, Sanyuan County, Shaanxi Province, the traditional residence landscape evaluation system was applied in practice, the evaluation results were analyzed, and suggestions for protection and development were put forward.
文摘Trace is the important composition structure of printed circuit board,w hich connects the devices,it is also the module that taking up the highest proportion,thus,it is the major testing target of quality assurance. The sunken defects proposed in this paper is a w idth abnormity defect on the FPC trace,w hich w ould cause the latent open circuit defect and affect the electrical function of circuit. The problem of flexible deformation and w idth difference make the FPC trace detection harder. Therefore,this paper proposed a detection scheme combined w ith linear masks and circle distribution characteristic. Firstly,this scheme preprocessed the acquired FPC image,divided the trace into several sub-regions and obtained the line w idth values of each trace transverse section. Then the line w idth sequences w ere searched w ith the linear difference template of gray scale. Thus,the sunken defects alternative positions w ere located. Lastly,the circle distribution characteristic is defined to identify the real defect areas from the alternative regions acquired from the previous step. Thus,the detection of sunken defects on the FPC trace w as accomplished.The algorithm w as tested in the self-built image database,w hich show s the better detection performance than the other typical algorithms.
基金Sponsored by Key Special Subject of “Green Building and Building Industrialization” of National Key R&D Plan(2018YFC0704903)National Natural Science Foundation of China(51778611)Project of Jiangsu Provincial “Six Talent Peaks”(201507290006)
文摘Under the background of stock planning,fine planning promotes intensive and efficient utilization to become an important measure of urban space utilization.The three-dimensional development of urban public space promotes the emergence and gradual growth of urban sunken square.However,there are many problems in the design of urban sunken square.In order to have a clear understanding of the current situation between the sunken square and the surrounding environment in the domestic mega city,the Shanghai Wujiaochang Sunken Square was selected for field investigation and questionnaire survey to understand the main problems and advantages and disadvantages in this case.The common problems were summarized and the disadvantages of the lack of integration between the sunken square and the surrounding environment were obtained and the role of integration of the two was clarified.It is expected that the design points of sunken square and surrounding environment integration can provide guidance for the follow-up design.
基金Supported by the National Natural Science Foundation of China(No.82101176)Natural Science Foundation of Zhejiang Province(No.LTGD23H120002).
文摘AIM:To investigate the prevalence and types of eyelid disorders among an elderly population in China,underscoring the significance of eyelid health for the aging demographic.METHODS:A cross-sectional epidemiological survey was conducted on 3038 individuals over the age of 50,all of whom were evaluated at the community health center.Each participant underwent routine ophthalmic examinations and eyelid morphology evaluations by an ophthalmologist.Eyelid disorders and morphology were assessed through slit-lamp examination and direct visual inspection.The study analyzed the characteristics of common eyelid disorders,including blepharoptosis,dermatochalasis,eyelid tumors,entropion,lower eyelid retraction(LER)and ectropion,as well as eyelid morphologies such as sunken and bulging eyelids.Descriptive statistics were used for demographic data,Chi-square test analyzed gender distribution differences,and logistic regression calculated odds ratios for blepharoptosis(P<0.05 considered significant).RESULTS:The study revealed that eyelid disorders were present in 1250(41%)individuals,with blepharoptosis being the most common disorder(25%),followed by severe dermatochalasis(16%),eyelid tumors(9.3%),LER and ectropion(11%),and entropion(1.2%).Sunken eyelids were more prevalent in men(26%)than in women(17%).The study found significant associations between the presence of blepharoptosis and sunken upper eyelids[P=0.01,odds ratio(OR)=1.33],as well as male gender(P=0.038,OR=1.22).Additionally,the prevalence of blepharoptosis increased with age.CONCLUSION:Eyelid disorders are highly prevalent in older people and increase steeply with age.This study highlights the need for increased awareness of eyelid health among older individuals at risk for eyelid disorders and the importance of ophthalmic examination for early diagnosis and management of these disorders.
文摘东部高潜水位矿区是我国重要的矿粮复合产区,采用井工开采方式造成其地表发生不均匀沉降,形成大量小面积、破碎化的沉陷积水区,沉陷水位的动态变化严重影响着矿区的生态和生产安全。精准监测沉陷水位对于东部高潜水位矿区开展湿地生态治理和水灾风险预测等工作至关重要。为此,在现有卫星测高技术的基础上,提出了一种基于多源卫星观测的矿区破碎化沉陷水体水位监测方法。以兖州矿区为研究对象,深入分析ICESat-2(Ice,Cloud and land Elevation Satellite-2)和GEDI(Global Ecosystem Dynamics Investigation)卫星观测数据集之间的相关性,并建立回归模型,利用该模型对GEDI观测数据集进行校正,通过融合多源卫星的观测数据集,实现矿区沉陷水位更高密度和更高精度的监测。结果表明:①ICESat-2卫星高度计的水位监测精度更佳,可以作为评价和修正GEDI数据的基础,而GEDI在监测水体的数量方面具有更大的优势;②ICESat-2与GEDI观测数据集之间存在显著的相关性,而地表交叉观测点数量的不足对于回归关系的拟合影响较小,借助回归模型能够有效地校正GEDI卫星的水位观测数据,使其水位测量的平均误差、平均绝对误差和均方根误差与校正前相比分别降低了69.74%、56.58%、50.56%;③通过融合ICESat-2与GEDI观测数据集,在水位监测中,展现出了较高的覆盖率和监测精度,监测水体覆盖率达到总体的88.89%,水位测量的平均误差、平均绝对误差以及均方根误差分别为0.10、0.17、0.26 m。总体而言,基于多源卫星观测的矿区沉陷水体水位监测方法能够满足矿区小面积、零散分布的水体水位监测的需求,并在其他需要高密度测量的问题中也具有应用潜力。
文摘Aim:We investigated the clinical application of autologous chyle fat in the correction of sunken upper eyelid.Methods:From November 2020 to October 2021,89 cases of correction with autologous chyle fat to sunken upper eyelid were performed(with or without other cosmetic procedures related to the eyes).An appropriate amount of fat was extracted from the superficial layer of the patient’s thigh and processed to chyle fat.About 0.5-2.8 mL of fat was injected under the orbicularis oculi muscle(roof-retro orbicularis oculi fat)or in the area where the orbital septal fat exists from the outer orbital margin of the upper eyelid.Results:In total,59 patients were followed up for 1-11 months after surgery.No infection,necrosis,vascular embolism,upper eyelid lumpiness,fat calcification,or liquefaction occurred in all patients,while seven cases showed inadequate correction.The depression basically disappeared,the shape was relatively full,the youthfulness was greatly improved,and the satisfaction of patients was high during the follow-up period.Conclusion:The correction with autologous chyle fat to sunken upper eyelid showed little trauma,short recovery periods,and satisfactory results,and it is worthy of being popularized and applied more widely.
文摘China’s salvage of a shipwreck sheds light on a forgotten marine trade route ~i~ ~ ~ Few things attract interest in history more than a sunken shipwreck. But the survival of wooden ships underwater is a matter of luck,with oxidization taking its toll and marine organ- isms capable of eating a vessel completely unless buried under specific geological conditions such as extreme cold or under a covering of silt.
