检索结果-南通市图书馆

Synthesis, structure characterization, and ion exchange properties of a novel open-framework ecomaterial silicotitanate

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2002年第3期21卷 170-174页

作者： YU Bo, WENMingfen, chen jing, and song ChongliInstitute ofNuclear Energy Technology, Tsinghua University, Beijing 00084, China Institute of Nuclear Energy Technology Tsinghua University 北京 100084

A novel open-framework ecomaterial silicotitanate (Na_4Ti_4Si_3O_(10)) wassynthesized by a combination of solgel and hydrothermal methods. The investigation on ion exchangeproperties shows that Na_4Ti_4Si_3O_(10) exhibits high ad-sorption for cesium, i.e., K_d is as highas 60 000 mL/g in neutral solution. The crystal structure of Na_4Ti_4Si_3O_(10) was characterized byX-ray difiraction (XRD), scanning electronic microscope (SEM), transmission electron microscope(TEM), Raman spectrum, differential thermal and thermogravimetric analysis (DTA/TGA), inductivelycoupled plasma (ICP), and X fluorescence analysis. The compound is tetragonal, P4_2, a=b = 0.781 10nm, c = 1.196 45 nm, alpha =beta = gamma = 90 deg, Z = 4, and R^a = 0.041; Na_4Ti_4Si_3O_(10) has athree dimensional framework consisting of Ti-O octahedral clusters and Si-O tetrahedra. The resultsshow that Na_4Ti_4Si_3O_(10) has good chemical stability, thermal stability, and high cesium ionexchange capacity in the whole pH range.

关键词： ion exchange silicotitanate characterization adsorption

Preparation of High Surface Area, Large Pore Volume Alumina by Using β-Cyclodextrin as a Non-surfactant Template

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2006年第9期17卷 1239-1242页

作者： Lai Jun WANG Ming Fen WEN Yu Shan LI Dong YANG jing chen Chong Li song Laboratory 201 Institute of Nuclear and New Energy Technology Tsinghua University Beijing 102201

A series of alumina samples were prepared using β-cyclodextrin as the non-surfactant template. These samples were characterized by XRD, BET and TEM. The results showed that the alumina samples prepared using β-cyclodextrin template had the higher surface areas （124-484 m^2/g）, larger pore volumes （0.7-1.27 mL/g） and more thermal stability than samples prepared without using β-cyclodextrin.

关键词： Al2O3 β-cyclodextrin templating method specific surface area.

Research on 2041 Cases of High Inpatient Expenditure and Influence Factors during 3 Years in a Single Center

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2016年第19期129卷 2325-2330页

作者： Suo-Wei Wu Qi Pan Chao Li Qin Wang jing-chen song Tong chen Department of Medical Administration Beijing Hospital Beijing 100730 China

Background：The study was to explore the causes of high inpatient expenditure through analyzing the distribution characteristics as well as the influence factors of high inpatient expenditure cases during 3 years within a Grade-A tertiary hospital through various aspects and multiple angles,thus identifying the major influence factors for high medical expenditure to develop further ***：We retrospectively studied 204l inpatient cases which cost more than RMB 100,000 Yuan per case in a Grade-A tertiary hospital from 2013 to *** analyzed the compositions of the medical cost to evaluate the major factors that cause the high inpatient *** the data and materials were collected from medical record system,and the statistical methods included t-test,variance of analysis,and multivariate linear ***：The average cost of the 2,041 cases was RMB 152,173 Yuan for medicines and materials of medical costs,which respectively accounted for 33.03% and 32.32% of the total cost;and the average length of hospital stay was 28.39 days/*** of skeletal and muscular system,circulatory system,and tumor were the top three disease categories of high inpatient expenditure,which accounted for 39.00%,33.46%,and 18.03%,***,criticality of the disease,gender of the patients,the occurrence of death,and the excessive length of hospital stay all had great impacts on average medical expenditure,while age,hospital infection,and surgery showed no significant impact on average medical ***：The main factors for high inpatient expenditure included the inadequate use of high-value medicines and materials,lacking cost control measures within the hospital,the excessive length of hospital stay for inpatients,and the unnecessary treatment for the patients.

关键词： High Inpatient Expenditure Influence Factors Medical Cost

Dissecting the cell microenvironment of ovarian endometrioma through single-cell RNA sequencing

在线全文

学校读者我要写书评

暂无评论

Science China Life Sciences 2025年第1期68卷 116-129页

作者： Jiangpeng Wu Siyu Xia Wenting Ye Yan Sun jing Cai Fubing Yu Haiping Wen Xiuwei Yi Taikang Li Mingwei chen Jiayun chen Ge song Chuanbin Yang Yali song Jigang Wang Department of Reproductive Medicine Dongguan Maternal and Child Health Care Hospital Department of Urology and Shenzhen Clinical Research Centre for GeriatricsShenzhen People's HospitalSouthern University of Science and Technology State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs Artemisinin Research Centerand Institute of Chinese Materia MedicaChina Academy of Chinese Medical Sciences Reproductive Medicine Center Foshan Women and Children Hospital State Key Laboratory of Antiviral Drugs School of PharmacyHenan University

Ovarian endometrioma（OE）, also known as “chocolate cysts,” is a cystic mass that develops in the ovaries due to endometriosis and is a common gynecological condition characterized by the growth of endometrial tissue outside the uterus, leading to symptoms such as dysmenorrhea, pelvic pain, and infertility. However, the precise molecular and cellular mechanisms driving this pathophysiology remain largely unknown, posing challenges for diagnosis and treatment. Here, we employed integrated single-cell transcriptomic profiling of over 52,000 individual cells from endometrial tissues of OE patients and healthy donors and identified twelve major cell populations. We identified notable alterations in cell type-specific proportions and molecular signatures associated with OE. Notably, the activation of IGFBP5+macrophages with pro-inflammatory properties, NK cell exhaustion, and aberrant proliferation of IQCG+and KLF2+epithelium are key features and may be the potential mechanisms underlying the pathogenesis of OE. Collectively, our data contribute to a better understanding of OE at the single cell level and may pave the way for the development of novel therapeutic strategies.

关键词： ovary high-throughput sequencing transcriptomics gene expression analysis ligand-receptor analysis

Domain generalization with semi-supervised learning for people-centric activity recognition

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2025年第1期68卷 171-188页

作者： jing LIU Wei ZHU Di LI Xing HU Liang song Academy for Engineering & Technology Fudan University Shanghai East-bund Research Institute on Networking Systems of AI School of Optoelectronic Information and Computer Engineering University of Shanghai for Science & Technology

People-centric activity recognition is one of the most critical technologies in a wide range of real-world applications,including intelligent transportation systems, healthcare services, and brain-computer interfaces. Large-scale data collection and annotation make the application of machine learning algorithms prohibitively expensive when adapting to new tasks. One way of circumventing this limitation is to train the model in a semi-supervised learning manner that utilizes a percentage of unlabeled data to reduce the labeling burden in prediction tasks. Despite their appeal, these models often assume that labeled and unlabeled data come from similar distributions, which leads to the domain shift problem caused by the presence of distribution gaps. To address these limitations, we propose herein a novel method for people-centric activity recognition,called domain generalization with semi-supervised learning(DGSSL), that effectively enhances the representation learning and domain alignment capabilities of a model. We first design a new autoregressive discriminator for adversarial training between unlabeled and labeled source domains, extracting domain-specific features to reduce the distribution gaps. Second, we introduce two reconstruction tasks to capture the task-specific features to avoid losing information related to representation learning while maintaining task-specific consistency. Finally, benefiting from the collaborative optimization of these two tasks, the model can accurately predict both the domain and category labels of the source domains for the classification task. We conduct extensive experiments on three real-world sensing datasets. The experimental results show that DGSSL surpasses the three state-of-the-art methods with better performance and generalization.

关键词： activity recognition deep learning domain generalization semi-supervised learning adversarial training

同方期刊数据库

Establishment of a Quantitative Medical Technology Evaluation System and Indicators within Medical Institutions

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2018年第11期131卷 1327-1332页

作者： Suo-Wei Wu Tong chen Qi Pan Liang-Yu Wei Qin Wang Chao Li jing-chen song Ji Luo Department of Medical Administration Beijing Hospital National Center of Gerontology Beijing 100730 China

Background： The development and application of medical technologies reflect the medical quality and clinical capacity of a hospital. It is also an effective approach in upgrading medical service and core competitiveness among medical institutions. This study aimed to build a quantitative medical technology evaluation system through questionnaire survey within medical institutions to perforna an assessment to medical technologies more objectively and accurately, and promote the management of medical quality technologies and ensure the medical safety of various operations among the hospitals. Methods： A two-leveled quantitative medical technology evaluation system was built through a two-round questionnaire survey of chosen experts. The Delphi method was applied in identifying the structure of evaluation system and indicators. The judgment of the experts on the indicators was adopted in building the matrix so that the weight coefficient and maximum eigenvalue （λ. max）, consistency index （CI）, and random consistency ratio （CR） could be obtained and collected. The results were verified through consistency tests, and the index weight coefficient of each indicator was conducted and calculated through analytical hierarchy process. Results： Twenty-six experts of different medical fields were involved in the questionnaire survey, 25 of whom successfully responded to the two-round research. Altogether, 4 primary indicators （safety, effectiveness, innovativeness, and benefits）, as well as 13 secondary indicators, were included in the evaluation system. The matrix is built to conduct the λ max, CI, and CR of each expert in the survey, and the index weight coefficients of primary indicators were 0.33, 0.28, 0.27, and 0.12, respectively, and the index weight coefficients of secondary indicators were conducted and calculated accordingly. Conclusions： As the two-round questionnaire survey of experts and statistical analysis were performed and credibility of the results was verified

关键词： Evaluation System Medical Management Medical Technology

Establishment of a Comprehensive Evaluation System on Medical Quality Based on Cross-examination of Departments within a Hospital

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2017年第23期130卷 2872-2877页

作者： Suo-Wei Wu Tong chen Qi Pan Liang-Yu Wei Yong Xuan Chao Li Qin Wang jing-chen song Medical Administration Department Beijing HospitalNational Center of Gerontology Beijing 100730 China

INTRODUCTIONThe management of medical quality is the core element of hospital management, and it is reflected in every part and aspect of medical behavior. Strengthening the management on medical quality is crucial in ensuring medical safety, promoting the ability of clinical diagnoses and treatments as well as the increasing the efficiency of medical service, Oil this basis, the establishment and operation of a comprehensive evaluation system on medical quality is not only the foundation in ensuring the orderly operation of the medical behavior and medical safety but also an effective means in continuously improving the quality of medical management.

关键词： Medical Management: Medical Quality: Medical Safetv

Cost Analysis of Cervical Cancer Patients with Different Medical Payment Modes Based on Gamma Model within a Grade A Tertiary Hospital

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2018年第4期131卷 389-394页

作者： Suo-Wei Wu Tong chen Qi Pan Liang-Yu Wei Qin Wang jing-chen song Chao Li Ji Luo Department of Medical Administration Beijing Hospital National Center of Gerontology Beijing 100730 China

Background： Cervical cancer shows a growing incidence and medical cost in recent years that has increased severe financial pressure on patients and medical insurance institutions. This study aimed to investigate the medical economic characteristics of cervical cancer patients with different payment modes within a Grade A tertiary hospital to provide evidence and suggestions for inpatient cost control and to verily the application of Gamma model in medical cost analysis. Methods： The basic and cost information of cervical cancer cases within a Grade A tertiary hospital in the year 2011-2016 were collected. The Gamma model was adopted to analyze the differences in each cost item between medical insured patient and uninsured patients. Meanwhile, the marginal means of different cost items were calculated to estimate the influence of payment modes toward different medical cost items among cervical cancer patients in the study. Results： A total of 1321 inpatients with cervical cancer between the 2011 and 2016 were collected through the medical records system. Of the 1321 cases~ 65.9% accounted for medical insured patients and 34.1% were uninsured patients. The total inpatient medical expenditure of insured patients was RMB 29,509.1 Yuan and uninsured patients was RMB 22,114.3 Yuan, respectively. Payment modes, therapeutic options as well as the recurrence and metastasis of tumor toward the inpatient medical expenditures between the two groups were statistically significant. To the specifics, drug costs accounted for 37.7% and 33.8% of the total, surgery costs accounted for 21.5% and 25.5%, treatment costs accounted for 18.7% and 16.4%, whereas the costs of imaging and laboratory examinations accounted for 16.4% and 15.2% for the insured patient and uninsured patients, respectively. As the effects of covariates were controlled, the total hospitalization costs, drug costs, treatment costs as well as imaging and laboratory exainination costs showed statistical significance.

关键词： Cervical Cancer Cost Analysis Medical Insurance Medical Management

Research of Medical Expenditure among Inpatients with Unstable Angina Pectoris in a Single Center

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2017年第13期130卷 1529-1533页

作者： Suo-Wei Wu Qi Pan Tong chen Liang-Yu Wei Yong Xuan Qin Wang Chao Li jing-chen song Department of Medical Administration Beijing Hospital National Center of Gerontology Beijing 100730 China

Background： With the rising incidence as well as the medical expenditure among patients with unstable angina pectoris, the research aimed to investigate the inpatient medical expenditure through the combination of diagnosis-related groups （DRGs） among patients with nnstable angina pectoris in a Grade A tertiary hospital to conduct the referential standards of medical costs for the diagnosis. Methods： Single-factor analysis and multiple linear stepwise regression method were used to investigate 3933 cases between 2014 and 2016 in Beijing Hospital （China） whose main diagnosis was defined as unstable angina pectoris to determine the main factors influencing the inpatient medical expenditure,and decision tree method was adopted to establish the model of DRGs grouping combinations. Results： The major influential factors of inpatient medical expenditure included age, operative method, therapeutic effects as well as comorbidity and complications （CCs） of the disease, and the 3933 cases were divided into ten DRGs by four factors： age, CCs, therapeutic effects, and the type of surgery with corresponding inpatient medical expenditure standards setup. Data of nonparametric test on medical costs among different groups were all significant （P 〈 0.001, by Kruskal-Wallis test）, with R2 = 0.53 and coefficient of variation （CV） 0.524. Conclusions： The classification of DRGs by adopting the type of surgery as the main branch node to develop cost control standards in inpatient treatment of unstable angina pectoris is conducive in standardizing the diagnosis and treatment behaviors of the hospital and reducing economic burdens among patients.

关键词： Angina, Unstable Decision Trees Diagnosis-related Groups Health Care Costs