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Chinese Physics B 2022年第3期31卷 140-145页

作者： Jian-Wen Wu yue-Jin cai Ji Lin Department of Physics Zhejiang Noimal UniversityJinhua 321004China

With the aid of the Painlevé analysis, we obtain residual symmetries for a new(3+1)-dimensional generalized Kadomtsev–Petviashvili(gKP) equation. The residual symmetry is localized and the finite transformation is proposed by introducing suitable auxiliary variables. In addition, the interaction solutions of the(3+1)-dimensional gKP equation are constructed via the consistent Riccati expansion method. Particularly, some analytical soliton-cnoidal interaction solutions are discussed in graphical way.

关键词： residual symmetry interaction solutions (3+1)-dimensional generalized Kadomtsev–Petviashvili equation

Natural products inspired[3+2]cycloaddition enables efficient construction of hydroxylated tetrahydrofuran acetals and concise syntheses of lignans

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Science China Chemistry 2024年第7期67卷 2306-2313页

作者： Dong-yue cai Weiming Shi Zhao-Hui Jin Zhi-Xiang Yu Jin-Xin Zhao Jian-Min yue State Key Laboratory of Drug Research Shanghai Institute of Materia MedicaChinese Academy of SciencesShanghai 201203China University of Chinese Academy of Sciences Beijing 100049China Beijing National Laboratory for Molecular Sciences(BNLMS) Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of ChemistryPeking UniversityBeijing 100871China

Mimicking biosynthetic pathways of hongkonoids led to the development of a new Cu(Ⅰ)-catalyzed[3+2]cycloaddition ofα-hydroxyketone andβ-keto enol ethers,affording tetrahydrofuran acetals in a highly diastereoselective manner and 100%atom *** studies on the mechanism disclosed a concerted but asynchronous Michael addition/aldol *** the same importance,this methodology provides a practical biomimetic approach for one-step construction of the dibenzylbutyrolactol lignan backbone starting from two phenyl propane derivatives,opening up a powerful new approach for lignan synthesis,which is showcased by succinct total syntheses of two biologically important aryltetralin-type lignans,β-apopicropodophyllin and *** the mild and operationally simple conditions,the developed chemistry might have a promising prospect in potential industrial applications.

关键词： [3+2]cycloaddition transition-metal catalysis tetrahydrofuran lignans natural products

Synthesis and Crystal Structure of 1,4-Bis-(benztriazol-1-ylmethyl)-2,3,5,6-tetramethylbenzene

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Chinese Journal of Structural Chemistry 2005年第3期24卷 279-282页

作者： cai yue-Peng HE Guang-Ping cai Yi ZHANG Chi SU Cheng-Yong KANG Bei-Sheng Dearment of Chemistr South China Normal UniversiyGuanzhou 510631China School of Chemisiry and Chemical Engineering Sun Yer-sen UniversitGuangzhou 510275China School of Pharmacaceutical Sciences Anhui Collegeof Traditional Chinese MedicineHefei 230038China

The title compound 1,4-bis(benztriazol-1-ylmethyl)-2,4,5,6-trimethylbenzene crys- tallizes in the monoclinic system, space group Pbca with a = 9.842(5), b = 9.455(5), c = 22.165(12) ?, V = 2062.6(18) ?3, Dc = 1.277 g/cm3, Z = 4, C24H24N6, Mr = 396.49, μ(MoKa) = 0.079 mm-1 and F(000) = 840. The structure was refined to R = 0.0662 and wR = 0.1891 for 1163 observed reflections (I > 2σ(I)). The title molecule has trans-conformation about the central phenyl ring. The zigzag-like molecules are connected by face-to-face π…π stacking to form an infinite 2D layer.

关键词： bis(benztriazol-1-ylmethyl)-2 4 5 6-trimethylbenzene synthesis crystal structure face-to-faceπ…πinteraction 2D layer

Different lymph node staging systems for predicting the prognosis of colorectal neuroendocrine neoplasms

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World Journal of Gastrointestinal Oncology 2024年第5期16卷 1745-1755页

作者： Yuan-Yi Zhang yue-Wei cai Xia Zhang Department of Pathology Zhaoqing Medical CollegeZhaoqing 526020Guangdong ProvinceChina Department of Emergency Zhaoqing Second People’s HospitalZhaoqing 526020Guangdong ProvinceChina Department of Pathology and Physiology Zhaoqing Medical CollegeZhaoqing 526020Guangdong ProvinceChina

BACKGROUND Colorectal neuroendocrine neoplasms(NENs)are a rare malignancy that primarily arises from the diffuse distribution of neuroendocrine cells in the colon and *** studies have pointed out that the status of lymph node may be used to predict the *** To investigate the predictive values of lymph node ratio(LNR),positive lymph node(PLN),and log odds of PLNs(LODDS)staging systems on the prognosis of colorectal NENs treated surgically,and compare their predictive *** This cohort study included 895 patients with colorectal NENs treated surgically from the Surveillance,Epidemiology,and End Results *** endpoint was mortality of patients with colorectal NENs treated surgically.X-tile software was utilized to identify most suitable thresholds for categorizing the LNR,PLN,and *** were selected in a random manner to form training and testing *** prognosis of surgically treating colorectal NENs was examined using multivariate cox analysis to assess the associations of LNR,PLN,and LODDS with the prognosis of colorectal NENs.C-index was used for assessing the predictive *** conducted a subgroup analysis to explore the different lymph node staging systems’predictive *** After adjusting all confounding factors,PLN,LNR and LODDS staging systems were linked with mortality in patients with colorectal NENs treated surgically(P<0.05).We found that LODDS staging had a higher prognostic value for patients with colorectal NENs treated surgically than PLN and LNR staging *** results were obtained in the different G staging subgroup ***,the area under the receiver operating characteristic curve values for LODDS staging system remained consistently higher than those of PLN or LNR,even at the 1-,2-,3-,4-,5-and 6-year follow-up *** LNR,PLN,and LODDS were found to significantly predict the prognosis of patients with colorectal NENs treated surgically.

关键词： Positive lymph node Lymph node ratio Log odds of positive lymph nodes Prognosis Colorectal neuroendocrine neoplasms

Computational implementation of a GIS developed tool for prediction of dynamic ground movement and deformation due to underground extraction sequence

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International Journal of Coal Science & Technology 2016年第4期3卷 379-398页

作者： yue cai Yujing Jiang Baoguo Liu Ibrahim Djamaluddin School of Civil Engineering Beijing Jiaotong University No.3 Shangyuan Village Haidian Diatrict Beijing 100044China 3raduate School of Engineering Nagasaki University 1-143 unkyo-machi Nagasaki 8528521 Japan State Key Laboratory of Mining Disaster Prevention and Control Co-Founded by Shandong Province and the Ministry of Science and Technology Shandong University of Scienceand Technology Qingdao 166510 China Faculty of Engineering Hasanuddin University Jalan Poros Malino KM 6 Bontomarannu Gowa South Sulawesi 92171Indonesia

In the last century, there has been a significant development in the evaluation of methods to predict ground movement due to underground extraction. Some remarkable developments in three-dimensional computational methods have been supported in civil engineering, subsidence engineering and mining engineering practice. However, ground movement problem due to mining extraction sequence is effectively four dimensional （4D）. A rational prediction is getting more and more important for long-term underground mining planning. Hence, computer-based analytical methods that realistically simulate spatially distributed time-dependent ground movement process are needed for the reliable long-term underground mining planning to minimize the surface environmental damages. In this research, a new computational system is developed to simulate four-dimensional （4D） ground movement by combining a stochastic medium theory, Knothe time-delay model and geographic information system （GIS） technology. All the calculations are implemented by a computational program, in which the components of GIS are used to fulfill the spatial-temporal analysis model. In this paper a tight coupling strategy based on component object model of GIS technology is used to overcome the problems of complex three-dimensional extraction model and spatial data integration. Moreover, the implementation of computational of the interfaces of the developed tool is described. The GIS based developed tool is validated by two study cases. The developed computational tool and models are achieved within the GIS system so the effective and efficient calculation methodology can be obtained, so the simulation problems of 4D ground movement due to underground mining extraction sequence can be solved by implementation of the developed tool in GIS.

关键词： Computational model Geographical information system - Component object model - Complex mining geometry Ground deformation Surface subsidence

Changes in Mortality Rates of Major Chronic Diseases Among Populations Aged Over 60 Years and Their Contributions to Life Expectancy Increase-China,2005-2020

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China CDC weekly 2022年第39期4卷 866-870,I0002页

作者： yue cai Xiang Cui Binbin Su Shiyong Wu Center for Health Statistics and Information National Health CommissionBeijingChina Department of Epidemiology Fuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Key Laboratory of Cardiovascular Epidemiology Chinese Academy of Medical SciencesBeijingChina School of Population Medicine and Public Health Chinese Academy of Medical Sciences/Peking Union Medical CollegeBeijingChina

Summary What is already known about this topic?The impacts of population aging have appeared in China,leading to a marked shift in the major contributors to life *** improvements are now mainly promoted by reductions in mortality rates of the *** is added by this report?This study systematically evaluates both changes in mortality rates of major chronic diseases among populations aged over 60 years as well as their contributions to life expectancy increases in China,from 2005 to *** are the implications for public health practice?The results of this study demonstrate that more attention should be paid to health conditions of the elderly,especially for the prevention and control of major chronic diseases.

关键词： prevention Population Major

Desulfurization using the 1,2-dimethylimidazolium ionic liquid as an adsorbent

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Chinese Chemical Letters 2015年第3期26卷 317-319页

作者： yue-Qin cai Gong-Hua Song Dian-Ni Liang School of Chemistry and Molecular Engineering East China University of Science and Technology Shanghai Key Laboratory of Chemical Biology Institute of Pesticides & PharmaceuticalsEast China University of Science and Technology

The aim of this study is to investigate the possible use of a 1,2-dimethylimidazolium ionic liquid,2,2-bis（（1,2-dimethylimidazolium）methyl）propane-1,3-diol hexafluorophosphate（1）,as an adsorbent to selectively remove aromatic heterocyclic sulfur compounds from model *** result indicates that adsorbent 1 is insoluble in model *** spent IL saturated sulfur compounds could be regenerated by a water dilution *** influence of extraction time or temperature as well as the molar ratio of 1 to aromatic heterocyclic sulfur compound was also studied.

关键词： adsorbent sulfur remove aromatic heterocyclic ionic insoluble regenerated saturated molar

Multi-element analysis by ArF laser excited atomic fluorescence of laser ablated plumes： Mechanism and applications

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Frontiers of physics 2012年第6期7卷 670-678页

作者： yue cai Po-Chun Chu Sut Kam Ho Nai-Ho Cheung Department of Physics Hong Kong Baptist University Kowloon Tong Hong Kong China Faculty of Science and Technology University of Macao Macao China

A new multi-element analysis technique based on laser-excited atomic fluorescence was reviewed. However, the one-wavelength-one-transition constraint was overcome. Numerous elements were induced to fluoresce at a single excitation wavelength of 193 nm. This was possible provided that the analytes were imbedded in dense plumes, such as those produced by pulsed laser ablation. The underlying mechanism of the technique was explained and corroborated. Analytical applications to metals, plastics, ceramics and their composites were discribed. Detection limits in the ng/g range and mass limits of atto moles were demonstrated. Several real-world problems, including the analysis of paint coating for trace lead, the non-destructive analysis of potteries and ink, the chemical profiling of electrode plastic interfaces, and the analysis of ingestible lead colloids were discussed.

关键词： laser-excited atomic fluorescence (LEAF) argon fluoride laser laser plume spectroscopy multi-element analysis

Water vapour multi-vortex structure under the interactions of typhoons and mid-low latitude systems during extreme precipitation in North China

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Advances in Climate Change Research 2023年第1期14卷 116-125页

作者： Jia-Hui TANG Xiang-De XU Wen-yue cai Chun-Zhu WANG Nanjing University of Information Science&Technology Nanjing 210044China State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081China National Climate Center China Meteorological AdministrationBeijing 100081China Training Center China Meteorological AdministrationBeijing 100081China

With diverse atmospheric circulation and complex mechanisms,typhoon remote rainstorms(TRR)are closely related to a variety of mid-low latitude *** anomalous signatures in such processes can improve forecasting heavy rainfall associated with typhoons and fill the gaps in current physical conceptual models of *** the optimal typhoon path dataset,ground observation data,and the National Centres for Environmental Prediction(NCEP)reanalysis dataset,the impact of anomalous water vapour transport on excessive rainfall in North China is *** vector empirical orthogonal function(VEOF)analysis is applied to typhoon precipitation events from 1970 to 2021,and three major modes are extracted to reflect the anomalous water vapour transport for typhoon *** 1 reflects a moisture circulation pattern in North China due to the coexistence of typhoons and remote and direct precipitation,with the highest probability of heavy precipi*** differences in remote precipitation areas and intensities are attributed to the location of typhoons in the western North Pacific and the shifting of the subtropical high *** characterise the water vapour transport circulation of TRR in North China,we proposed the‘multivortex’*** transmission of the multi-vortex ensures a continuous supply of TRR water vapour,and the enhancement of the multi-vortex is significantly linked to the enhancement of remote *** extreme northern rainstorms,75·8 Henan,7·21 Beijing,and 7·20 Zhengzhou rainstorms,have anomalous multi-vortex water vapour convergence,similar to Mode *** mechanism of water vapour driven by multi-vortex in the three severe rainstorm events is more extreme than in usual TRR events in North *** stronger Indian low vortex and relatively southerly subtropical highs can intensify the southwest branch of the double water vapour transport branch,whereas the strengthening of typhoons in the western North Pacific facilitates water

关键词： Typhoon remote rainstorm Mid-low latitude circulation systems Interaction Multi-vortex

Influencing factors of inpatient expenditure pattern for cancer in China, 2015

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Chinese Journal of Cancer Research 2017年第1期29卷 11-17页

作者： Lan Lan yue cai Tao Zhang Ruixian Wu Ming Xue Qun Meng West China School of Public Health Sichuan University Center for Health Statistics and Information National Health and Family Planning Commission

Objective： We analyzed the proportion of cancer-caused hospitalization expenses in total hospitalization expenses from national authoritative data and explored influencing factors of the proportion so as to provide effective data information for more rational utilization of health ***： Two-level lineal regression model was used to explore influencing factors of ratios of the cancer inpatient expenditure over the total inpatient expenditure of hospitals in China in 2015. A total of 40.76 million inpatient medical records were used to generate the outcome variables, while the explanatory variables were from hospital information database and China Health and Family Planning Statistical Yearbook and ***： Inpatient expenditure pattern for cancer（IEPC） varied largely across provinces, ranging from 3.03% to19.61%. The major sources of variability were from the differences of hospital level and number of beds. There was homogeneity within a province, while heterogeneity between the provinces. Rising one level of the hospital led to the increase of 0.475 natural logarithm units of IEPC averagely. The number of beds increasing 1,000 each made the natural logarithm of IEPC increase one unit ***： Our study showed that a considerable proportion of IEPC variation could be explained by the differences of hospital level and number of beds. It implied that it is possible to estimate disease-specific ratio of inpatient expense taking into account key influencing factors in China. Furthermore, this study is an input to economic and financial analyses and provides evidence for future study on the national economic burden of cancer.

关键词： Cancer expenditure pattern multilevel China