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超声引导下穿刺抽脓术与超声引导下置管引流冲洗术治疗不同脓腔直径乳腺脓肿的效果对比研究

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临床和实验医学杂志 2024年第7期23卷 767-772页

作者：蒲宝平岳建玲周步琴嘉峪关市第一人民医院超声医学科甘肃嘉峪关735100 嘉峪关市第一人民医院影像中心甘肃嘉峪关735100 兰州新区第一人民医院超声科甘肃兰州730087

目的对比超声引导下穿刺抽脓冲洗术与超声引导下置管引流冲洗术治疗不同脓腔直径乳腺脓肿的效果。方法对2021年3月至2023年3月嘉峪关市第一人民医院收治的90例乳腺脓肿患者进行回顾性研究,根据治疗方式不同将患者分成穿刺抽脓组(n=40)... 详细信息

目的对比超声引导下穿刺抽脓冲洗术与超声引导下置管引流冲洗术治疗不同脓腔直径乳腺脓肿的效果。方法对2021年3月至2023年3月嘉峪关市第一人民医院收治的90例乳腺脓肿患者进行回顾性研究,根据治疗方式不同将患者分成穿刺抽脓组(n=40)和置管引流组(n=50)。穿刺抽脓组患者接受超声引导下穿刺抽脓冲洗术,置管引流术组患者接受超声引导下置管引流冲洗术治疗。比较2组的不同脓腔直径(脓腔直径≤5 cm、脓腔直径>5 cm)围手术期相关指标[手术时间、术中引流量、术中单次出血及累计出血量、切口长度、引流时间、引流总量、康复时间、瘢痕长度和及术后单次和累及视觉模拟评分法(VAS)评分]、治疗满意度、治愈率、不良反应发生情况、术后复发及继续哺乳情况。结果脓腔直径≤5 cm的乳腺脓肿:2组的脓腔大小、引流总量、康复时间、治愈率比较,差异均无统计学意义(P>0.05);置管引流组的手术时间、术中引流量、术中单次出血量、术中累计出血量、切口长度、瘢痕长度、术后单次VAS评分均显著高于穿刺抽脓组,差异均有统计学意义(P5 cm的乳腺脓肿:2组的脓腔大小、术中累计出血、引流总量比较,差异均无统计学意义(P>0.05);置管引流组的手术时间、术中引流量、术中单次出血量、切口长度、瘢痕长度、术后单次VAS评分、满意度评分和治愈率均显著高于穿刺抽脓组,差异均有统计学意义(P0.05)。术后6个月,置管引流组术后复发率为2.00%,显著低于穿刺抽脓组(12.50%),差异有统计学意义(P5 cm的术后复发率和继续哺乳率比较,差异均无统计学意义(P>0.05)。结论对于脓腔直径≤5 cm的乳腺脓肿,穿刺抽脓可缩短手术时间,减少术中出血量、切口大小及瘢痕长度,患者满意度更高;对于脓腔直径>5 cm的乳腺脓肿,置管引流可缩短康复时间,提高治愈率和患者满意度。

关键词：脓肿引流术超声引导穿刺抽脓置管脓腔直径乳腺

Microfacies and diagenetic alteration in a semi-deep to deep lacustrine shale: The Yanchang Formation in the Ordos Basin, China

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Petroleum Science 2024年第3期21卷 1524-1538页

作者： Bin Bai Jing-yue Hao ling Fu Yu-Xi Liu jian-Peng Wang Lan Wang Kevin GTaylor Lin Ma PetroChina Research Institute of Petroleum Exploration and Development Beijing100083China Department of Earth and Environmental Sciences University of ManchesterM139PLUK College of Earth Sciences Jilin UniversityChangchun130061jilinChina Department of Chemical Engineering University of ManchesterM139PLUK

The mineralogical development and diagenetic sequence of lacustrine shales in the Chang 7 Member of the Yanchang Formation in the Ordos Basin are detailed studied.A model of their depositional system and a diagenetic diagram are proposed in this *** detailed petrographic,mineralogical,and elemental analyses,four distinct shale types are identified:argillaceous shale,siliceous shale,calcareous shale,and carbonate,clay,and silt-bearing *** main diagenetic process in argillaceous shale is the transformation of illite to smectite,negatively impacting shale *** shale undergoes carbonate cementation and quartz dissolution,contributing to increased porosity,particularly in *** shale experiences diagenesis characterised by carbonate formation and dissolution,with a prevalence of *** carbonate,clay,and silt-bearing shale,the dissolution of K-feldspar contributes to illitization of *** shale,characterised by more clay minerals and lower mesopore volume,is identified as a potential hydrocarbon *** shale,with the highest pore volume and abundant inter-mineral pores,emerges as a promising shale oil *** findings contribute to a comprehensive understanding of shale properties,aiding in the prediction of shale oil exploration potential in the studied area.

关键词： Ordos Basin Yanchang Formation Chang 7 Member Diagenesis Microfacies

Multicolored Bipartite Ramsey Numbers of Large Cycles

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Acta Mathematicae Applicatae Sinica 2024年第2期40卷 347-357页

作者： Shao-qiang LIU yue-jian PENG College of Mathematics and Statistics Hanshan Normal UniversityChaozhou 521041China School of Mathematics Hunan UniversityChangsha 410082China

For an integer r≥2 and bipartite graphs Hi,where 1≤i≤r,the bipartite Ramsey number br(H1,H2,…,Hr)is the minimum integer N such that any r-edge coloring of the complete bipartite graph KN;N contains a monochromatic subgraph isomorphic to Hi in color i for some 1≤i≤*** show that if r≥3;α1,α2>0,αj+2≥[(j+2)!-1]Σi=1^(j+1)α1 for j=1,2…r-2,then br(C2[α1n],C2[α2n],…,C2[αrn]=(Σ=j=1^(r)a j+o(1))n.

关键词： ramsey number bipartite ramsey number regularity lemma

Development and validation of a prediction model for early screening of people at high risk for colorectal cancer

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World Journal of Gastroenterology 2024年第5期30卷 450-461页

作者： ling-Li Xu Yi Lin Li-Yuan Han yue Wang jian-Jiong Li Xiao-Yu Dai Department of General Surgery Ningbo No.2 HospitalNingbo 315000Zhejiang ProvinceChina Center for Health Economics Faculty of Humanities and Social SciencesUniversity of NottinghamNingbo 315100Zhejiang ProvinceChina Department of Global Health Ningbo Institute of Life and Health IndustryUniversity of Chinese Academy of SciencesNingbo 315000Zhejiang ProvinceChina School of Public Health Medical College of Soochow UniversitySuzhou 215123Jiangsu ProvinceChina

BACKGROUND Colorectal cancer(CRC)is a serious threat *** early screening is suggested to be the most effective method to prevent and control CRC,the current situation of early screening for CRC is still not *** China,the incidence of CRC in the Yangtze River Delta region is increasing dramatically,but few studies have been ***,it is necessary to develop a simple and efficient early screening model for *** To develop and validate an early-screening nomogram model to identify individuals at high risk of *** Data of 64448 participants obtained from Ningbo Hospital,China between 2014 and 2017 were retrospectively *** cohort comprised 64448 individuals,of which,530 were excluded due to missing or incorrect *** 63918,7607(11.9%)individuals were considered to be high risk for CRC,and 56311(88.1%)were *** participants were randomly allocated to a training set(44743)or validation set(19175).The discriminatory ability,predictive accuracy,and clinical utility of the model were evaluated by constructing and analyzing receiver operating characteristic(ROC)curves and calibration curves and by decision curve ***,the model was validated internally using a bootstrap resampling *** Seven variables,including demographic,lifestyle,and family history information,were *** logistic regression analysis revealed that age[odds ratio(OR):1.03,95%confidence interval(CI):1.02-1.03,P<0.001],body mass index(BMI)(OR:1.07,95%CI:1.06-1.08,P<0.001),waist circumference(WC)(OR:1.03,95%CI:1.02-1.03 P<0.001),lifestyle(OR:0.45,95%CI:0.42-0.48,P<0.001),and family history(OR:4.28,95%CI:4.04-4.54,P<0.001)were the most significant predictors of high-risk *** lifestyle was a protective factor,whereas family history was the most significant risk *** area under the curve was 0.734(95%CI:0.723-0.745)for the final validation set ROC curve and 0.735(95%CI:0.728-0.742)for the training s

关键词： Colorectal cancer Early screening model High-risk population Nomogram model Questionnaire survey Dietary habit Living habit

Electrolyte effect on electrochemical behaviors of manganese fluoride material for aqueous asymmetric and symmetric supercapacitors

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Rare Metals 2024年第3期43卷 1048-1061页

作者： Zheng-Hua He jian-Fei Gao ling-Bin Kong State Key Laboratory of Advanced Processing and Recycling of Non-Ferrous Metals Lanzhou University of TechnologyLanzhou730050China School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou730050China

Exploring wide voltage window materials is not only an available measure to enhance the energy density of hybrid supercapacitor(HSCs),but also avoids the dynamic mismatch caused by different energy storage mechanisms of two electrodes in assembled symmetrical ***,there are few reports about the wide potential window materials except Bi_(2)O_(3)and VO_(2).Therefore,the MnF_(2)synthesized by solvothermal reaction was served as the electrode for *** MnF_(2)exhibited electrochemical activity in alkaline solution in three-electrode system,especially with a wide potential window from-0.8 to+0.5 V in 2 mol·L^(-1)***,the assembled MnF_(2)//MnF_(2)symmetrical HSC had a potential window of 1.5 V,and it exhibited outstanding long-cycle ***,when MnF_(2)was taken as the negative and positive respectively,the potential windows of asymmetric devices CoMoO_(4)//MnF_(2)and MnF_(2)//Activated Carbon(AC)could reach 1.3 and 1.45 V,respectively,showing excellent cycle *** work shows that MnF_(2)material has great research value in HSC,and provides a new research direction for developing high-performance devices.

关键词： Manganese fluoride Potential window Hybrid supercapacitors Electrochemical performance

Diagnosis and endovascular treatment of spontaneous direct carotid-cavernous fistula

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Chinese Medical Journal 2008年第16期121卷 1558-1562页

作者： YU Jia-sheng LEI Ting CHEN Jin-cao HE yue CHEN jian LI ling Department of Neurosurgery Tongj1 Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan Huhei 430030 China

Background Spontaneous direct carotid-cavernous fistula （CCF） is relatively rare and few reports have been found in the literature. The aim of this paper was to report the clinical characteristics, imaging findings and curative effect of endovascular treatment for patients with spontaneous direct CCF. Methods We retrospectively analyzed the clinical data of nine patients with spontaneous direct CCF admitted between May 2003 and November 2007 and the *** endovascular treatment. Sudden neuro-ophthalmological symptoms were the most common clinical presentation at diagnosis （n=8）. No patients had a history of head trauma. Cerebral digital subtraction angiography （DSA） was performed on all cases under local anesthesia and seven cases received endovascular treatment. Results In eight patients, internal carotid angiograms recorded during the early arterial phase revealed aneurysms located in the cavernous sinuses, and in one patient, a dilated internal carotid artery （ICA） was seen. Among the nine cases, seven received endovascular treatment via a transarterial approach and complete occlusion of the fistula was obtained with no technique-related complications, one died suddenly before treatment and one gave up treatment. A detachable balloon was used as the embolic material in two cases, a detachable balloon and detachable coil as the embolic material in two cases, balloon-assisted coil embolization in two cases and covered stents were successfully placed in the parent vessel to exclude the aneurysm and fistula from circulation in one case. During a follow-up period of 3-48 months, all treated patients remained asymptomatic except for one patient who suffered from ipsilateral decreased vision. Conclusions Most spontaneous direct CCF may be caused by a ruptured intracavernous aneurysm with direct shunting into the cavernous sinus. Endovascular treatment seems to be a safe and effective method for treating spontaneous direct CCF.

关键词： spontaneous, direct, carotid-cavernous fistula detachable balloon coil covered stent

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纳米多层膜中的非晶晶化与超硬效应

无机材料学报 2006年第6期21卷 1292-1300页

作者：孔明岳建岭李戈扬上海交通大学金属基复合材料国家重点实验室上海200030

通过对TiN/SiC、TiN/TiB_2和TiN/SiO_2纳米多层膜微结构和力学性能的研究,展示了通常溅射沉积态为非晶的SiC、TiB_2和SiO_2薄膜,在立方结构的TiN晶体层模板作用下的晶化现象,以及多层膜由此产生的生长结构和力学性能的变化．结果表明：... 详细信息

通过对TiN/SiC、TiN/TiB_2和TiN/SiO_2纳米多层膜微结构和力学性能的研究,展示了通常溅射沉积态为非晶的SiC、TiB_2和SiO_2薄膜,在立方结构的TiN晶体层模板作用下的晶化现象,以及多层膜由此产生的生长结构和力学性能的变化．结果表明：SiC在层厚≤0．6nm时晶化为立方结构后,可以反过来促进TiN/SiC多层膜中TiN层的晶体完整性；TiB_2在层厚≤2．9nm时晶化为六方结构,并与TiN形成{111}TiN//{0001}TiB_2,TiN//TiB_2的共格关系；SiO_2在层厚≤0．9nm时晶化为立方结构的赝晶．多层膜中SiC、TiB_2和SiO_2品化后都与TiN形成共格外延的生长结构,并相应产生了硬度升高的超硬效应．随着SiC、TiB_2和SiO_2层厚的增加,它们又转变为非晶态,多层膜的共格外延生长受到破坏,其硬度亦明显降低．

关键词：纳米多层膜外延生长非晶晶化超硬效应

Comprehensive tensile properties improved by deep cryogenic treatment prior to aging in friction-stir-welded 2198 Al–Li alloy

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Rare Metals 2024年第10期43卷 5403-5409页

作者： jian-Qiu Sun yue Ma Chong Gao Hong-Yun Luo School of Materials Science and Engineering Beihang University Chinalco Research Institute of Science and Technology

In order to improve the comprehensive mechanical properties,deep cryogenic treatment （DCT）prior to aging was carried out on friction-stir-welded（FSW） 2198 Al-Li alloy;afterward,the microstructure and tensile properties were characterized by means of optical microscopy （OM）,transmission electron microscopy（TEM） and tensile *** results show that FSW 2198 alloy through DCT prior to aging （DAT） possesses superior tensile properties than conventional aging treatment （AT）The microstructural analysis reveals that DAT alloy exhibits a finer grain structure,since DCT might effectively alleviate the residual stress in FSW 2198 alloy and thus decrease the driving force for grain coarsening in subsequent aging ***,DCT generates dislocation multiplication,which provides more preferential nucleation sites for T1 （Al2CuLi） phase during subsequent aging treatment,resulting in high-density fine T1 phases and thin precipitate-free zone within DAT *** reasonable microstructure leads to DAT alloy possessing better strength-ductility combination compared to AT alloy.

关键词： Al–Li alloy Deep cryogenic treatment Friction stir welding Tensile properties

Research on the MPPT of Photovoltaic Power Generation Based on Improved WOA and P&O under Partial Shading Conditions

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Energy Engineering 2024年第4期121卷 951-971页

作者： jian Zhong Lei Zhang ling Qin School of Electrical Engineering Nantong UniversityNantong226019China

Partial shading conditions(PSCs)caused by uneven illumination become one of the most common problems in photovoltaic(PV)systems,which can make the PV power-voltage(P-V)characteristics curve show *** maximum power point tracking(MPPT)methods have shortcomings in tracking to the global maximum power point(GMPP),resulting in a dramatic decrease in output *** order to solve the above problems,intelligent algorithms are used in ***,the existing intelligent algorithms have some disadvantages,such as slow convergence speed and large search ***,an improved whale algorithm(IWOA)combined with the P&O(IWOA-P&O)is proposed for the MPPT of PV power generation in this ***,IWOA is used to track the range interval of the GMPP,and then P&O is used to accurately find the MPP in that *** with other algorithms,simulation results show that this method has an average tracking efficiency of 99.79%and an average tracking time of 0.16 s when tracking ***,experimental verification is conducted,and the results show that the proposed algorithm has better MPPT performance compared to popular particle swarm optimization(PSO)and PSO-P&O algorithms.

关键词： Photovoltaic power generation maximum power point tracking whale algorithm perturbation and observation