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双根钛针髓内弹性固定治疗第5掌骨颈骨折的临床疗效探析

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中国实用医药 2024年第4期19卷 64-66页

作者：程飞张镇罗仲伟沈金虎杨六中南京中医药大学附属徐州市中医院骨伤科 221000

目的探讨双根钛针髓内弹性固定治疗第5掌骨颈骨折的临床疗效。方法回顾分析采用双根钛针髓内弹性固定治疗的20例第5掌骨颈骨折患者的资料,分别记录患者随访时间、手术时长、住院时间、骨折愈合时间、并发症、手部功能恢复情况。结果随访... 详细信息

目的探讨双根钛针髓内弹性固定治疗第5掌骨颈骨折的临床疗效。方法回顾分析采用双根钛针髓内弹性固定治疗的20例第5掌骨颈骨折患者的资料,分别记录患者随访时间、手术时长、住院时间、骨折愈合时间、并发症、手部功能恢复情况。结果随访的20例患者中2例失访,随访时间6~13个月,平均7.55个月。手术时长15~28 min,平均21.30 min。住院时间3~7 d,平均4.85 d。18例骨折均愈合,愈合时间6~10周,平均8.10周。未见神经、肌腱损伤等并发症。末次随总主动活动度(TAM)系统评定功能:优14例,良3例,差1例,优良率为94.44%(17/18)。结论采用双根钛针髓内弹性固定治疗第5掌骨颈骨折,手术简便易操作、创伤小、固定可靠、手术时间和住院时间短、治疗费用低,可以早期功能锻炼、关节功能恢复好,是治疗第5掌骨颈骨折有效手段之一。

关键词：双根钛针髓内弹性固定第5掌骨颈骨折

Modifications in aroma characteristics of'Merlot'dry red wines aged in American,French and Slovakian oak barrels with different toasting degrees

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Food Science and Human Wellness 2024年第1期13卷 381-391页

作者： Haocheng Lu Binhao cheng Yibin Lan Changqing Duan fei He Center for Viticulture and Enology College of Food Science and Nutritional EngineeringChina Agricultural UniversityBeijing 100083China Key Laboratory of Viticulture and Enology Ministry of Agriculture and Rural AffairsBeijing 100083China

Aging in oak barrels is widely used in enology which could bring flavor changes and aromatic complexity to *** the present study,the aroma compounds were analyzed from the‘Merlot’dry red wines,which were fermented in two types of fermenters(stainless steel tank and rotated oak barrel)and aged in six types of oak barrels(three geographic origins×two toasting degrees)for different time(0,3,6 and 9 months,respectively).Results showed that 30 volatiles were associated with barrels and increased during oak *** fermenters could influence the intensities of the toast,leathery,smoky,fruity,floral and caramel *** concentration of whisky lactone,eugenol,cis-isoeugenol,and the intensities of the toast and spicy aromas were highest in the wines aged in American oak and were lowest in the wines aged in French oak *** concentrations of guaiacol,syringol,trans-isoeugenol,furfural alcohol,vanilla,cis-whisky lactone enabled the medium toasting barrels to be distinguished from the light toasting *** compounds originating from the barrels could be used to distinguish the types of different barrels,but the other general grape-derived and fermentation-derived volatiles could *** fermenters,oak species and toasting degrees of the barrels all had significant effects on the aroma profiles of the aged‘Merlot’dry red wines,but the influence of the geographic origin was not obvious.

关键词： Wine Aroma Oak Barrel Oak species Toasting degrees Geographic origin Aging

The mechanism of Yinchenhao decoction in treating obstructivejaundice- induced liver injury based on Nrf2 signaling pathway

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World Journal of Gastroenterology 2022年第32期28卷 4635-4648页

作者： Jun-Jian Liu Yan Xu Shuai Chen cheng-fei Hao Jing Liang Zhong-Lian Li The Second Department of Hepatobiliary and Pancreatic Surgery Tianjin Medical University NanKai HospitalTianjin 300102China Graduate School Tianjin Medical UniversityTianjin 3000070China Department of Thoracic Surgery Xuzhou City Hospital of Traditional Chinese MedicineXuzhou 221000Jiangsu ProvinceChina School of Foreign Languages Chengdu University of Traditional Chinese MedicineChengdu 610000Sichuan ProvinceChina

BACKGROUND Obstructive jaundice(OJ)is caused by bile excretion disorder after partial or complete bile duct *** may cause liver injury through various *** Chinese medicine(TCM)has a lot of advantages in treating *** recovery of liver function can be accelerated by combining Chinese medicine treatment with existing clinical *** decoction(YCHD),a TCM formula,has been used to treat *** much progress has been made in recent years in understanding the mechanism of YCHD in treating OJ-induced liver injury,it is still not *** To investigate chemical components of YCHD that are effective in the treatment of OJ and predict the mechanism of *** The active components and putative targets of YCHD were predicted using a network pharmacology *** Ontology biological process and Kyoto Encyclopedia of Genes and Genomes path enrichment analysis were carried out by cluster *** predicted the biological processes,possible targets,and associated signaling pathways that YCHD may involve in the treatment of *** male Sprague–Dawley rats were randomly divided into three groups,each consisting of 10 rats:the sham group(Group S),the OJ model group(Group M),and the YCHDtreated group(Group Y).The sham group only received *** OJ model was established by ligating the common bile duct twice in Groups M and *** 1 wk,rats in Group Y were given a gavage of YCHD(3.6 mL/kg)twice daily,whereas rats in Groups S and M were given the same amount of physiological saline after intragastric administration *** 7 d,all rats were killed,and the liver and blood samples were collected for histopathological and biochemical *** bilirubin(TBIL),direct bilirubin(DBIL),alanine aminotransferase(ALT),and aspartate transaminase(AST)levels in the blood samples were *** gene expression levels of inducible nitric oxide synthase(iNOS)and endothelial nitric oxide synthase(eNOS),and th

关键词： Yinchenhao decoction Obstructive jaundice Network pharmacology Liver injury Animal models Oxidative stress

Adsorption of methane onto mudstones under supercritical conditions: Mechanisms, physical properties and thermodynamic parameters

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Petroleum Science 2023年第1期20卷 34-47页

作者： Yang Wang Hong-fei cheng Qin-Hong Hu Lang-Bo Jia Xi-Meng Wang Sha-Sha Gao Luo-Fu Liu School of Earth Science and Resources Chang'an UniversityXi'anShaanxi710054China Key Laboratory of West Mineral Resources and Geological Engineering of Ministry of Education Chang'an UniversityXi'anShaanxi710054China Department of Earth and Environmental Sciences The University of Texas at ArlingtonArlingtonTX76019USA Exploration and Development Research Institute Changqing Oil FieldPetroChinaXi'anShaanxi710000China Department of Geology and Geophysics Texas A&M UniversityCollege StationTX77843USA State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China

Since the mechanisms of methane-mudstone interactions are important for estimating shale gas reserves,methane adsorption under supercritical conditions of 30 MPa pressure and 303.15,333.15,363.15 K temperatures was studied to measure the excess methane adsorption in two mudstone samples from Yanchang Formation,Ordos *** adsorption features inflection points where the amount of adsorbed gas changes from increasing to decreasing *** methods(fixed,slope,and freely fitted density)were applied to calculate the adsorbed-phase density(rad),which was then used to fit the measured excess *** criteria,the goodness-of-fit and whether the fitting can obtain reasonable absolute adsorption,were applied to determine the most accurate *** indicated that the supercritical Dubinin-Radushkevich(SDR)model with freely fitted rad was the most reasonable *** volume of adsorbed methane at 363.15 K is close to the micropore(d<2 nm)volume of the corresponding *** the actual geological conditions,the adsorbed gas should be predominantly stored in *** parameters reveal that the methane adsorption on mudstone is a physisorption process that is jointly controlled by the heterogeneity of,and interaction forces between the methane molecule and,the rock surface.

关键词： Supercritical methane adsorption Excess adsorption Adsorbed-phase density Adsorption model Thermodynamic feature

论含水层非均质性对地下水污染特征的控制——以某山谷型垃圾填埋场为例

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环境保护科学 2024年第3期50卷 135-140,159页

作者：胡红岩陈鸿汉陈正国程飞郭祥旭黑龙江省生态地质调查研究院哈尔滨150000 中国地质大学(北京) 北京100000 光大环保能源(沈阳)有限公司沈阳110000

以某山谷型垃圾填埋场垃圾渗漏液泄漏的地下水污染调查与污染风险管控过程为例,探讨山谷型水文地质条件小尺度场地下含水层非均质性对地下水污染特征的控制作用。通过对研究区水文地质勘查、地下水污染的精准消源控羽和含水层强径流带... 详细信息

以某山谷型垃圾填埋场垃圾渗漏液泄漏的地下水污染调查与污染风险管控过程为例,探讨山谷型水文地质条件小尺度场地下含水层非均质性对地下水污染特征的控制作用。通过对研究区水文地质勘查、地下水污染的精准消源控羽和含水层强径流带的高效刻画等实践结果表明:山谷区非均质含水层中“非菲克弥散”现象明显;场地含水层非均质的掌控是地下水污染管控与修复工程成败与优化的关键所在;含水层非均质的把控可明显提高地下水污染精准管控效果,同时还可大大降低管控成本。本案例可为山谷型地下水污染风险管控工作提供可供借鉴的实践经验和技术参考。

关键词：含水层非均质性山谷型垃圾填埋场地下水污染管控非菲克弥散地下水污染特征

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Multifractal estimation of NMR T_(2) cut-off value in low-permeability rocks considering spectrum kurtosis: SMOTE-based oversampling integrated with machine learning

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Petroleum Science 2023年第6期20卷 3411-3427页

作者： Xiao-Jun Chen Rui-Xue Zhang Xiao-Bo Zhao Jun-Wei Yang Zhang-Jian Lan cheng-fei Luo Jian-Chao Cai MOE Key Laboratory of Tectonics and Petroleum Resources Wuhan430074HubeiChina Department of Chemical Engineering and Analytical Science The University of ManchesterManchesterM139PLUK Jianghan Oilfied SINOPECQianjiang430063HubeiChina Hainan Branch of CNOOC Ltd Haikou570311HainanChina CNOOC EnerTech-Drilling&Production Co.CNOOC Central Laboratory(Zhanjiang) Zhanjiang524057GuangdongChina National Key Laboratory of Petroleum Resources and Engineering China University of PetroleumBeijing102249China

The transverse relaxation time (T_(2)) cut-off value plays a crucial role in nuclear magnetic resonance for identifying movable and immovable boundaries, evaluating permeability, and determining fluid saturation in petrophysical characterization of petroleum reservoirs. This study focuses on the systematic analysis of T_(2) spectra and T_(2) cut-off values in low-permeability reservoir rocks. Analysis of 36 low-permeability cores revealed a wide distribution of T_(2) cut-off values, ranging from 7 to 50 ms. Additionally, the T_(2) spectra exhibited multimodal characteristics, predominantly displaying unimodal and bimodal morphologies, with a few trimodal morphologies, which are inherently influenced by different pore types. Fractal characteristics of pore structure in fully water-saturated cores were captured through the T_(2) spectra, which were calculated using generalized fractal and multifractal theories. To augment the limited dataset of 36 cores, the synthetic minority oversampling technique was employed. Models for evaluating the T_(2) cut-off value were separately developed based on the classified T_(2) spectra, considering the number of peaks, and utilizing generalized fractal dimensions at the weight 0. The primary objective of this work is to gain insights into the relationship between the kurtosis of the T_(2) spectrum and pore types, as well as to predict the T_(2) cut-off value of low-permeability rocks using machine learning and data augmentation techniques.

关键词： Nuclear magnetic resonance Low-permeability porous media T_(2)cut-off value Fractal and multifractal Data augmentation Machine learning

Numerical simulation of liquid sloshing in a spherical tank by MPS method

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Journal of Hydrodynamics 2024年第2期36卷 232-240页

作者： Cong-yi Huang Ji-fei Wang Wei-wen Zhao De-cheng Wan Computational Marine Hydrodynamic Lab(CMHL) School of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai200240China Shanghai Aerospace System Engineering Institute Shanghai201109China

This paper investigates the sloshing phenomena in a spherical liquid tank using the moving particle semi-implicit(MPS)method,a crucial study in fluid *** from previous research focused on rectangular or LNG tanks,this work explores the unique motion patterns inherent to spherical *** accuracy of our in-house MPS solver MLParticle-SJTU is validated against experimental data and finite volume method(FVM).And the MPS method reveals a closer alignment with experimental outcomes,which suggests that MPS method is particularly effective for modeling complex,non-linear fluid *** the fluid’s response to excitation at its natural frequency is simulated,showcasing vigorous sloshing and rotational *** analyses of the fluid motion are conducted by drawing streamline diagrams,velocity vector diagrams,and vorticity *** fluid’s motion response is explored using both time-domain and frequency-domain curves of the fluid centroid,as well as the sloshing force.

关键词： Moving particle semi-implicit(MPS)method spherical tank liquid sloshing model experiment

Effect of Frequency on Degradation in BOPP Films Under Repetitively Pulsed Voltage

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CSEE Journal of Power and Energy Systems 2024年第3期10卷 1280-1290页

作者： Chuansheng Zhang Yu Feng fei Kong Bangdou Huang cheng Zhang Tao Shao Beijing International S&T Cooperation Base for Plasma Science and Energy Conversion Institute of Electrical EngineeringChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

Operating conditions of film capacitors are complex,and the problem of film insulation failure caused by repetitively pulsed voltage is becoming ever *** of the film under repetitively pulsed voltage cannot be accurately evaluated by the average breakdown electric *** this paper,the effects of pulsed electric field and pulse repetition frequency on the breakdown in biaxially oriented polypropylene(BOPP)films are *** phases of BOPP degradation are proposed based on the voltage amplitude,i.e.,maintenance(M),decline(D),and near-zero(N).Evolution of the BOPP film from degradation to breakdown at different frequencies is ***,transition of discharge mode and elemental composition of the film are *** results show continuous heat generation under repetitive microsecond pulses is the dominant factor for degradation of BOPP *** number of applied pulses and the repetitive stressing time decrease exponentially with increase of *** research can be contributed to the safe and reliable operation of capacitors.

关键词： Aging breakdown film capacitor polypropylene repetitive pulse

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高分辨率遥感影像土地利用及其变化检测

北京测绘 2024年第2期38卷 124-130页

作者：项超生邓良陈俊江玉杰徐立晨程飞徐敏安徽省地质测绘技术院安徽合肥230022

为探究不同分类方法在高分辨率遥感影像土地利用及变化检测中的应用,基于淮南市2017-2018年高分一号宽幅相机(GF-1WFV)数据,分别采用最大似然法和支持向量机法进行土地利用及其变化检测,分析不同分类结果的空间分布、转移矩阵、动态变化... 详细信息

为探究不同分类方法在高分辨率遥感影像土地利用及变化检测中的应用,基于淮南市2017-2018年高分一号宽幅相机(GF-1WFV)数据,分别采用最大似然法和支持向量机法进行土地利用及其变化检测,分析不同分类结果的空间分布、转移矩阵、动态变化,根据其分类精度,最后比较它们的优缺点。结果表明:两种分类方法的林地、耕地、水体和人工建筑分类总体精度均在98%以上,Kappa系数在97%以上,具有较高的分类精度。2017-2018年林地和建筑面积有所增加,其中林地的增加较为稳定,人工建筑的转入和转出百分比都比较高,耕地的变化在不同的分类方法下显示都是明显减少,水体的变化在使用最大似然法分类时是增加的,而使用支持向量机法分类时是减少的。因此,不同分类方法所得到的结果受特定数据集、数据预处理、特征选取、参数选择等因素的影响而存在差异。

关键词：高分辨率遥感土地利用变化检测最大似然支持向量机