检索结果-南通市图书馆

Development and validation of a risk prediction model for repeated indwelling urinary catheterization in patients with cervical cancer after surgery

引用

Clinical Research Communications 2023年第1期6卷 19-24页

作者： Fang Wang Xiao-Li Wang shi-qun zhou Lan-Lan Lou Zhi-Min Wu Department of Gynecology and Obstetrics Third Military Medical University Southwest HospitalChongqing 404100China Department of Geriatrics The Second Affiliated Hospital of Chongqing Medical UniversityChongqing 404100China

Objective:To study the factors influencing secondary indwelling catheterisation after cervical cancer surgery and to develop a predictive risk ***:A total of 260 patients in a tertiary hospital in Chongqing were selected from January 2020 to December 2021 via convenience *** information of patients was recorded,including age;body mass index;history of hypertension and diabetes,bladder dysfunction,postoperative urinary retention,and postoperative urinary tract infection;Histology;staging;surgical approach;Operation time;Time of first remove of catheter;indwelling catheter days;Hospitalization *** absolute shrinkage and selection operator was used to reduce dimensionality and select patient characteristics,and multivariate analysis was performed based on the selected *** on the outcome of analysis,a line chart model was developed for predicting the risk of secondary catheterization in patients with indwelling catheterization after radical cervical cancer *** coefficient of conformity index(C-index)and calibration curves were used to evaluate the accuracy and *** model was internally validated via bootstrapping(1000 random samples),and the clinical utility of the model was assessed via decision curve analysis(DCA).Results:Four characteristic variables were selected,including preoperative bladder function,postoperative urinary tract infection,surgical approach,and Time of first remove of *** are independent risk factors affecting urinary *** risk prediction model exhibited good discrimination performance with a C-index of 0.722(95%CI,0.661-0.783)and was well *** C-index was 0.708 in internal validation *** showed that the risk model was clinically useful for predicting secondary catheterization,and clinical benefits were observed at the decision threshold of≥11%.Conclusion:A novel model was developed to predict the risk of secondary *** model was based on preoperat

关键词： cervical cancer predictors nomogram indwelling catheter secondary catheterization

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Identifying the dynamic behaviors in complete reconstruction of Co-based complex precatalysts during electrocatalytic oxygen evolution

引用

Journal of Energy Chemistry 2025年第1期100卷 226-233页

作者： Jingfang Zhang Danyang Wu Linke Cai Youluan Lu Fanpeng Cheng Lijuan shi qun Yi Yao Liu Yi Huang Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology School of Chemical Engineering & Pharmacy Wuhan Institute of Technology Key Laboratory of Pesticide & Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of Education College of Chemistry Central China Normal University College of Materials Science and Engineering Fuzhou University

Transition metal-based nanomaterials have emerged as promising electrocatalysts for oxygen evolution reaction（OER）. Considerable research efforts have shown that self-reconstruction occurs on these nanomaterials under operating conditions of OER process. However, most of them undergo incomplete reconstruction with limited thickness of reconstruction layer, leading to low component utilization and arduous exploration of real catalytic mechanism. Herein, we identify the dynamic behaviors in complete reconstruction of Co-based complexes during OER. The hollow phytic acid（PA） cross-linked CoFe-based complex nanoboxes with porous nanowalls are designed because of their good electrolyte penetration and mass transport ability, in favor of the fast and complete reconstruction. A series of experiment characterizations demonstrate that the reconstruction process includes the fast substitution of PA by OH-to form Co（Fe）(OH)xand subsequent potential-driven oxidation to Co（Fe）OOH. The obtained CoFeOOH delivers a low overpotential of 290 mV at a current density of 10 mA cm-2and a long-term *** experiment results together with theory calculations reveal that the Fe incorporation can result in the electron rearrangement of reconstructed CoFeOOH and optimization of their electronic structure,accounting for the enhanced OER activity. The work provides new insights into complete reconstruction of metal-based complexes during OER and offers guidelines for rational design of high-performance electrocatalysts.

关键词： Complete reconstruction Co-based complex Precatalysts Oxygen evolution reaction

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Quantum public-key crypto via EPR pairs

引用

Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 58-63页

作者： Xiang-qun Fu Hong-Wei Li Jian-Hong shi Tan Li Wan-Su Bao Henan Key Laboratory of Quantum Information and Cryptography Information Engineering University Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China

With the development of quantum computing technology, quantum public-key cryptography is gradually becoming an alternative to the existing classical public-key cryptography. This paper designs a quantum trapdoor one-way function via EPR pairs and quantum measurements. Based on this, a new quantum public-key cryptosystem is presented, which offers forward security,and can resist the chosen-plaintext attack and chosen-ciphertext attack. Compared with the existing quantum public-key cryptos,eavesdropping can be automatically detected in this new quantum public-key cryptosystem under a necessary condition, which is also detailed in the paper.

关键词： quantum public-key crypto trapdoor one-way function EPR pairs

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

虚拟现实技术在选煤中的应用研究

引用

系统仿真学报 2001年第S2期13卷 377-378页

作者：史有群周强许世范中国矿业大学信电学院江苏徐州221008

在充分研究选煤生产过程及其特点的基础上,探讨通过建立选煤工艺过程逻辑框架结构,并分层填充设备单元和接口部件来构造选煤企业的虚拟选煤的主体工艺流程;在总结煤炭颗粒在介质中的运动规律的基础上,建立智能化的粒子运动模型,来研究... 详细信息

在充分研究选煤生产过程及其特点的基础上,探讨通过建立选煤工艺过程逻辑框架结构,并分层填充设备单元和接口部件来构造选煤企业的虚拟选煤的主体工艺流程;在总结煤炭颗粒在介质中的运动规律的基础上,建立智能化的粒子运动模型,来研究粒子在典型的工艺设备(如:跳汰机)中的运动和分层机理,为选煤技术的研究和选煤企业选工艺参数的选择和设备控制参数调节提供一种新的方法和途径。

关键词：虚拟现实工艺流程智能粒子

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

特立帕肽对尿毒症腹膜透析大鼠钙磷代谢紊乱的作用及其机制探讨

引用

中国现代医学杂志 2022年第8期32卷 46-51页

作者：周仕群黎海翔陈岳尧海南医学院附属儋州市人民医院肾内科海南儋州571799 海南医学院附属儋州市人民医院中医科海南儋州571799

目的探究特立帕肽通过Wnt/β-catenin通路对尿毒症腹膜透析大鼠钙磷代谢紊乱的影响。方法取50只SPF级SD雄性大鼠复制尿毒症模型,模型复制过程中死亡2只,随机取12只大鼠为尿毒症组,剩余36只大鼠随机分为尿毒症腹膜透析假手术组、尿毒症... 详细信息

目的探究特立帕肽通过Wnt/β-catenin通路对尿毒症腹膜透析大鼠钙磷代谢紊乱的影响。方法取50只SPF级SD雄性大鼠复制尿毒症模型,模型复制过程中死亡2只,随机取12只大鼠为尿毒症组,剩余36只大鼠随机分为尿毒症腹膜透析假手术组、尿毒症腹膜透析组、特立帕肽组,每组12只。特立帕肽组成功复制尿毒症腹膜透析大鼠模型后,腹腔注射特立帕肽30μg/(kg·d),1次/d,连续6周;尿毒症组、尿毒症腹膜透析组、尿毒症腹膜透析假手术组同时间腹腔注射等量生理盐水。采用酶联免疫吸附试验测定血肌酐、血尿素氮及血钙、血磷水平;苏木精-伊红染色观察肾组织病理学变化;Western blotting测定肾组织Wnt/β-catenin通路蛋白的表达。结果与尿毒症组、尿毒症腹膜透析假手术组比较,尿毒症腹膜透析组、特立帕肽组大鼠血肌酐、血尿素氮水平升高(P<0.05);且特立帕肽组大鼠血肌酐、血尿素氮水平低于尿毒症腹膜透析组(P<0.05)。与尿毒症组、尿毒症腹膜透析假手术组比较,尿毒症腹膜透析组、特立帕肽组大鼠血钙水平降低(P<0.05),血磷水平升高(P<0.05);且特立帕肽组大鼠血钙水平高于尿毒症腹膜透析组(P<0.05),血磷水平低于尿毒症腹膜透析组(P<0.05)。与尿毒症组、尿毒症腹膜透析假手术组比较,尿毒症腹膜透析组、特立帕肽组大鼠肾组织Wnt、β-catenin蛋白相对表达量降低(P<0.05);且特立帕肽组大鼠肾组织Wnt、β-catenin蛋白相对表达量低于尿毒症腹膜透析组(P<0.05)。结论特立帕肽可改善尿毒症腹膜透析大鼠肾功能,提高血清钙、磷水平,进而改善尿毒症腹膜透析大鼠钙磷代谢紊乱,其作用可能是通过抑制Wnt/β-catenin通路活化来实现的。

关键词：尿毒症腹膜透析钙磷代谢紊乱特立帕肽 Wnt/β-catenin通路大鼠

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

稻苗在磁化营养液中生长状况及吸收K^+动力学研究简报

引用

土壤通报 2000年第4期31卷 185-186页

作者：韩士群邹德乙高定李福江苏省农科院土肥所江苏南京210014 沈阳农业大学土地与环境学院辽宁沈阳110161

离子耗竭技术水培试验的结果表明 ,磁化营养液可促进稻苗生长 ;在经 0 2T、0 4T磁化强度处理后的营养液 ,其稻苗吸收K+ 动力学参数Km 值和Cmin值比对照减小 ,Vmax值则增大 .

关键词：磁化营养液稻苗 K^+吸收动力学参数

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Preference of Chaotic Synchronization in a Coupled Laser System

引用

Communications in Theoretical Physics 2005年第6X期44卷 1076-1080页

作者： zhou Yun ZHU shi-qun WU Liang School of Physical Science and Technology Suzhou University Suzhou 215006 China

In a coupled laser system, the dynamics of the receiving laser is investigated when two separate transmitting lasers are injected into the receiving laser with different coupling strengths. It is shown that the phenomenon of preference of chaotic synchronization appears under appropriate coupling conditions. The receiving laser will entrain the pulses of either one or both transmitting lasers when the coupling is strong while it keeps its own dynamics when the coupling is weak.

关键词： coupled laser system dynamics preference of chaotic synchronization

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Multipoint Heave Motion Prediction Method for ships Based on the PSO-TGCN Model

引用

China Ocean Engineering 2023年第6期37卷 1022-1031页

作者： DING shi-feng MA qun zhou Li HAN Sen DONG Wen-bo School of Naval Architecture and Ocean Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Naval Architecture Ocean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China

During ship operations,frequent heave movements can pose significant challenges to the overall safety of the ship and completion of cargo *** existing heave compensation systems suffer from issues such as dead zones and control system time lags,which necessitate the development of reasonable prediction models for ship heave *** this paper,a novel model based on a time graph convolutional neural network algorithm and particle swarm optimization algorithm(PSO-TGCN)is proposed for the first time to predict the multipoint heave movements of ships under different sea *** enhance the dataset's suitability for training and reduce interference,various filter algorithms are employed to optimize the *** training process utilizes simulated heave data under different sea conditions and measured heave data from multiple *** results show that the PSO-TGCN model predicts the ship swaying motion in different sea states after 2 s with 84.7%accuracy,while predicting the swaying motion in three different *** performing a comparative study,it was also found that the present method achieves better performance that other popular *** model can provide technical support for intelligent ship control,improve the control accuracy of intelligent ships,and promote the development of intelligent ships.

关键词： ship motion prediction time delay multipoint forecast time-graph convolutional neural network particle swarm optimization

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Neural-network-based Power System State Estimation with Extended Observability

引用

Journal of Modern Power Systems and Clean Energy 2021年第5期9卷 1043-1053页

作者： Guanyu Tian Yingzhong Gu Di shi Jing Fu Zhe Yu qun zhou Department of Electrical and Computer Engineering University of Central FloridaOrlandoFL 32816USA GEIRI North America San JoseCA 95134USA State Grid Jiangsu Electric Power Company NanjingChina

This paper proposes a neural-network-based state estimation(NNSE)method that aims to achieve higher time efficiency,improved robustness against noise,and extended observability when compared with the conventional weighted least squares(WLS)state estimation *** consists of two parts,the linear state estimation neural network(LSE-net)and the unobservable state estimation neural network(USE-net).The LSE-net functions as an adaptive approximator of linear state estimation(LSE)equations to estimate the nominally observable *** inputs of LSE-net are the vectors of synchrophasors while the outputs are the estimated *** USE-net operates as the complementary estimator on the nominally unobservable *** inputs are the estimated observable states from LSE-net while the outputs are the estimation of nominally unobservable ***-net is trained off-line to approximate the veiled relationship between observable states and unobservable *** test cases are conducted to validate the performance of the proposed *** first case,which is based on the IEEE 118-bus system,shows the comprehensive performance of convergence,accuracy,and robustness of the proposed *** second case study adopts real-world synchrophasor measurements,and is based on the Jiangsu power grid,which is one of the largest provincial power systems in China.

关键词： State estimation linear state estimation stochastic gradient descent neural network wide area management system(WAMS).

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Transitions in a Logistic Growth Model Induced by Noise Coupling and Noise Color

引用

Communications in Theoretical Physics 2006年第1X期46卷 175-182页

作者： shi Jin ZHU shi-qun School of Physical Science and Technology Suzhou University Suzhou 215006 China

With unified colored noise approximation, the logistic growth model is used to analyze cancer cell population when colored noise is included. It is found that both the coupling between noise terms and the noise color can induce continuous first-order-like and re-entrance-like phase transitions in the system. The coupling and the noise color can also increase tumor cell growth for small number of cell mass and repress tumor cell growth for large number of cell mass. It is shown that the approximate analytic expressions are consistent with the numerical simulations.

关键词： logistic growth model first-order-like phase transition re-entrance-like phase transition colored noise

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：