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Bipolar hip arthroplasty using conjoined tendon preserving posterior lateral approach in treatment of displaced femoral neck fractures

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World Journal of Clinical Cases 2024年第6期12卷 1076-1083页

作者： Ting-Xin yan Sheng-Jie Dong bo Ning Yu-Chi Zhao Department of Joint Surgery Yantaishan HospitalYantai 264003Shandong ProvinceChina Department of Joint Surgery Dongying People's HospitalDongying 257091Shandong ProvinceChina

BACKGROUND Hip fractures account for 23.8%of all fractures in patients over the age of 75 *** than half of these patients are older than 80 *** hemiarthroplasty(BHA)was established as an effective management option for these *** approaches can be used for the BHA ***,there is a high risk of postoperative *** conjoined tendon-preserving posterior(CPP)lateral approach was introduced to reduce postoperative dislocation *** To evaluate the effectiveness and safety of the CPP lateral approach for BHA in elderly *** We retrospectively analyzed medical data from 80 patients with displaced femoral neck fractures who underwent *** patients were followed up for at least 1 *** the 80 patients,57(71.3%)were *** time to operation averaged 2.3 d(range:1-5 d).The mean age was 80.5 years(range:67-90 years),and the mean body mass index was 24.9 kg/m^(2)(range:17-36 kg/m^(2)).According to the Garden classification,42.5%of patients were typeⅢand 57.5%of patients were typeⅣ.Uncemented bipolar hip prostheses were used for all *** conjoined tendons,dislocations,and adverse complications during and after surgery were *** The mean postoperative follow-up time was 15.3 months(range:12-18 months).The average surgery time was 52 min(range:40-70 min)with an average blood loss of 120 mL(range:80-320 mL).The transfusion rate was 10%(8 of 80 patients).The gemellus inferior was torn in 4 patients(5%),while it was difficult to identify in 2 patients(2.5%)during *** posterior capsule was punctured by the fractured femoral neck in 3 patients,but the conjoined tendon and the piriformis tendon remained *** patients had stem varus greater than 3 degrees or femoral *** were no patients with stem subsidence more than 5 mm at the last *** postoperative dislocations were observed throughout the follow-up *** significance was found between preoperative an

关键词： Conjoined tendon preserving Bipolar hip arthroplasty Femoral neck fractures Postoperative dislocation Posterolateral approach

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Isolation and culture of human primary osteoblasts:Comparing the effects of differences in method details on osteoblast characteristics

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Genes & Diseases 2024年第2期11卷 546-549页

作者： Fei Chen yan Zhang Pai Peng Xiao-Ting Huang Zi-Han Qiu Bao-Cheng Liu Tie-Lin yang bo yang yan Guo Key Laboratory of Biomedical Information Engineering of Ministry of Education Biomedical Informatics & Genomics CenterSchool of Life Science and TechnologyXi'an Jiaotong UniversityXi'anShaanxi 710049China Department of Orthopaedics Shannxi Provincial People's Hospital (The Third Affiliated Hospital of Xi'an Jiaotong University)Xi'anShaanxi 710068China

Osteoblasts are essential in the maintenance of human bone homeostasis.1 The abnormal formation and impaired differentiation ability of osteoblasts are pivotal factors leading to bone-related diseases,suggesting that an indepth study of osteoblasts can provide novel treatment strategies for these diseases.2 Human primary osteoblasts are precious experimental models in bone-related research.3 However,the isolation and culture of human primary osteoblasts still have some difficulties and ***,we refined a method to isolate and culture human primary osteoblasts by taking cancellous bone through a bone tissue sampler and pre-digesting it with pancreatin,which makes the process easier,cheaper,and more ***,we compared the effects of the subtle changes in isolation and culture methods on the phenotype of human primary osteoblasts and examined the differences in morphology,proliferation,and differentiation between micro-explants cultured osteoblasts(MECOBs)and explants cultured osteoblasts(EC-OBs).

关键词： impaired culture details

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Sodium Nitrate/Formamide Deep Eutectic Solvent as Flame-Retardant and Anticorrosive Electrolyte Enabling 2.6 V Safe Supercapacitors with Long Cyclic Stability

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Energy & Environmental Materials 2024年第3期7卷 374-383页

作者： Huachao yang Yiheng Qi Zifan Wang Qinghu Pan Chuanzhi Zhang Jianhua yan Kefa Cen Zheng bo Kostya(Ken)Ostrikov State Key Laboratory of Clean Energy Utilization College of Energy EngineeringZhejiang UniversityHangzhou Zhejiang 310027China School of Chemistry and Physics and QUT Centre for Materials Science Queensland University of Technology(QUT)Brisbane QLD 4000Australia

Safe operation of electrochemical capacitors(supercapacitors)is hindered by the flammability of commercial organic ***-flammable Water-in-Salt(WIS)electrolytes are promising alternatives;however,they are plagued by the limited operation voltage window(typically≤2.3 V)and inherent corrosion of current ***,a novel deep eutectic solvent(DES)-based electrolyte which uses formamide(FMD)as hydrogen-bond donor and sodium nitrate(NaNO_(3))as hydrogen-bond acceptor is *** electrolyte exhibits the wide electrochemical stability window(3.14 V),high electrical conductivity(14.01 mScm^(-1)),good flame-retardance,anticorrosive property,and ultralow cost(7%of the commercial electrolyte and 2%of WIS).Raman spectroscopy and Density Functional Theory calculations reveal that the hydrogen bonds between the FMD molecules and NO_(3)^(-)ions are primarily responsible for the superior stability and *** developed NaNO_(3)/FMD-based coin cell supercapacitor is among the best-performing state-of-art DES and WIS devices,evidenced by the high voltage window(2.6 V),outstanding energy and power densities(22.77 Wh kg^(-1)at 630 W kg^(-1)and 17.37 kW kg^(-1)at 12.55 Wh kg^(-1)),ultralong cyclic stability(86%after 30000 cycles),and negligible current collector *** NaNO_(3)/FMD industry adoption potential is demonstrated by fabricating 100 F pouch cell supercapacitors using commercial aluminum current collectors.

关键词： cyclic stability deep eutectic solvents electrical conductivity electrochemical stability window supercapacitors

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Tumor necrosis factor α deficiency promotes myogenesis and muscle regeneration

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Zoological Research 2024年第4期45卷 951-960页

作者： Yu Fu Jing-Ru Nie Peng Shang bo Zhang Da-Wei yan Xin Hao Hao Zhang State Key Laboratory of Animal Biotech Breeding China Agricultural UniversityBeijing 100193China College of Animal Science Xizang Agricultural and Animal Husbandry UniversityLinzhiXizang 860000China College of Animal Science and Technology Yunnan Agricultural UniversityKunmingYunnan 650201China

Tumor necrosis factorα(TNFα)exhibits diverse biological functions;however,its regulatory roles in myogenesis are not fully *** the present study,we explored the function of TNFαin myoblast proliferation,differentiation,migration,and myotube fusion in primary myoblasts and C2C12 *** this end,we constructed TNFαmuscle-conditional knockout(TNFα-CKO)mice and compared them with flox mice to assess the effects of TNFαknockout on skeletal *** indicated that TNFα-CKO mice displayed phenotypes such as accelerated muscle development,enhanced regenerative capacity,and improved exercise endurance compared to flox mice,with no significant differences observed in major visceral organs or skeletal *** label-free proteomic analysis,we found that TNFα-CKO altered the distribution of several muscle development-related proteins,such as Hira,Casz1,Casp7,Arhgap10,Gas1,Diaph1,Map3k20,Cfl2,and Igf2,in the nucleus and *** set enrichment analysis(GSEA)further revealed that TNFαdeficiency resulted in positive enrichment in oxidative phosphorylation and MyoD targets and negative enrichment in JAK-STAT *** findings suggest that TNFα-CKO positively regulates muscle growth and development,possibly via these newly identified targets and pathways.

关键词： TNFα Muscle-conditional knockout Myogenesis Regeneration Muscle development

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EMCO-based Optimal Layout Design of Hybrid Wind-wave Energy Converters Array

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Protection and Control of Modern Power Systems 2024年第5期9卷 142-161页

作者： bo yang Jinhang Duan Yunfeng yan Bingqiang Liu Jianxiang Huang Lin Jiang Rui Han Faculty of Electric Power Engineering Kunming University of Science and TechnologyKunming 650500China College of Electrical Engineering Zhejiang UniversityHangzhou 310027China Company of Kunming Bureau of CSG EHV Transmission Company Kunming 650217China School of Electrical Engineering and Electronics University of LiverpoolLiverpool L693GJUK Company of Electric Power Science Research Institute State Grid Zhejiang Electric Power Company Ltd.Hangzhou 310014China

Marine renewable energy,combining wave energy converters(WECs)and floating wind turbines(FWTs)into hybrid wave-wind energy converters(HWWECs),garners significant global *** offer potential cost reductions,increased power generation,and enhanced system *** absorption power of high wind energy sites is primarily influenced by the complex hydrodynamic interactions among floating bodies,which are closely related to the location and wind-wave environment of high wind energy *** delve into the positive interactions among HWWECs,this paper proposes a HWWEC array optimization strategy based on the artificial ecosystem opti-mization-manta ray foraging optimization coordinated op-timizer(EMCO).In EMCO,the decomposition operator of artificial ecosystem optimization(AEO)and the flip-ping-dipper foraging operator of manta ray foraging opti-mization coordinated(MRFO)cooperate dynamically to effectively balance local exploitation and global *** validate the effectiveness of EMCO,experiments were conducted in scenarios with 3,5,8,and 20 HWWECs,and compared with five typical *** results demonstrate the existence of multiple optimal solutions for HWWEC *** achieves maximum total absorp-tion power and exhibits good ***,EMCO en-hances the q-factor values of HWWECs across four scales:1.0478,1.0586,1.0612,and 0.9965,*** Terms—Marine renewable energy,hybrid wind-wave energy converter,layout optimization,coordinating optimizer.

关键词： Marine renewable energy hybrid wind-wave energy converter layout optimization coordinating optimizer

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Parotid metastasis of rare lung adenocarcinoma:A case report

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World Journal of Clinical Cases 2024年第6期12卷 1182-1189页

作者： Ru-Xi yan Lin-bo Dou Zi-Jia Wang Xue Qiao Hong-Hai Ji yan-Cong Zhang School of Stomatology Weifang Medical UniversityWeifang 261000Shandong ProvinceChina Department of Stomatology Dezhou People’s HospitalDezhou 253000Shandong ProvinceChina Department of Stomatology Dezhou Women and Children's HospitalDezhou 253000Shandong ProvinceChina

BACKGROUND Lung cancer(LC)is the leading cause of malignancy-related deaths *** most common sites of metastasis include the nervous system,bone,liver,respiratory system,and adrenal *** metastasis in the parotid gland is very rare,and its diagnosis presents a ***,we report a case of parotid metastasis in primary *** SUMMARY The patient was a 74-year-old male who was discovered to have bilateral facial asymmetry inadvertently two years *** right earlobe was slightly swollen and without pain or *** tomography(CT)examination showed bilateral lung space-occupying *** biopsy was performed and revealed adenocarcinoma(right-upper-lung nodule tissue).Positron emission tomography-CT examination showed:(1)Two hypermetabolic nodules in the right upper lobe of the lung,enlarged hy-permetabolic lymph nodes in the right hilar and mediastinum,and malignant space-occupying lesion in the right upper lobe of the lung and possible metastasis to the right hilar and mediastinal lymph nodes;and(2)multiple hypermetabolic nodules in bilateral parotid *** puncture biopsy was performed considering lung adenocarcinoma *** detection of lung biopsy specimens revealed an EGFR gene 21 exon L858R *** This case report highlights the challenging diagnosis of parotid metastasis in LC given its rare *** lesions should be differentiated from primary tumors of the parotid *** radiological imaging is unreliable,and puncture biopsy is needed for final diagnosis of this condition.

关键词： Lung cancer Metastasis Parotid gland Pathology Positron emission tomography/computed tomography Case report

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Fabrication of dense SiBCN monolith at a lower temperature and its high-temperature performance

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Journal of Advanced Ceramics 2024年第8期13卷 1198-1211页

作者： Zi-bo Niu Daxin Li Dechang Jia Zhihua yang Kunpeng Lin yan Wang Paolo Colombo Ralf Riedel Yu Zhou Institute for Advanced Ceramics School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150080China Key Laboratory of Advanced Structural-Function Integrated Materials and Green Manufacturing Technology Ministry of Industry and Information TechnologyHarbin 150080China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150080China Department of Industrial Engineering University of PadovaPadova 3513iItaly Department of Materials Science and Engineering The Pennsylvania State UniversityUniversity Park 16802USA Institute of Materials Science Darmstadt University of TechnologyDarmstadt 64287Germany School of Materials Science and Engineering Harbin Institute of Technology(Shenzhen)Shenzhen 518055China

In this study,a crack-free pyrolysis process of partially cured precursor powder compacts was developed to prepare dense silicon boron carbonitride(SiBCN)monoliths at much lower temperatures(1300℃),thereby circumventing the challenges of sintering densification(>1800℃).Unlike the elastic fracture in over-cured precursors or the viscoelastic deformation in under-cured precursors,the partially cured precursor,exhibiting elastic-plastic deformation behavior,facilitates limited nanoscale pore formation in a dense structure,achieving a balance between crack-free pyrolysis and *** to SiBCN derived from the over-cured precursor(σ=~159 MPa,K_(IC)=1.9 MPa:m^(1/2),Vickers hardness(HV)=7.8 GPa,and E=122 GPa),the resulting SiBCN monolith exhibited significantly improved mechanical properties(σ=~304 MPa,K_(IC)=3.7 MPa-m12,HV=10.6 GPa,and E=161 GPa)and oxidation *** addition,this study investigated the high-temperature performance of SiBCN monoliths,including crystallization and oxidation,and determined the oxidation kinetics induced by pore structure healing and the different oxidation mechanisms of Si-C-N and B-C-N clusters in the amorphous *** to its unique composition and structure,the SiBCN ceramic oxide layer exhibits exceptional self-healing effects on repairing the nanoporous system in the initial stage and shows outstanding high-temperature stability during prolonged oxidation,mitigating adverse effects from bubble formation and *** to the nanoporous structure,the oxidation rate is initially controlled by gas diffusion following a linear law before transitioning to oxide layer diffusion characterized by a parabolic ***,due to different valence bond configurations,Si-C-N transforms into an amorphous SiCNO structure after phase separation,unlike the nucleation and growth of residual B-N-C.

关键词： silicon boron carbonitride(SiBCN)ceramics crack-free pyrolysis amorphous structure oxidation mechanisms kinetic law

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Numerical Simulation of Oil-Water Two-Phase Flow in Low Permeability Tight Reservoirs Based on Weighted Least Squares Meshless Method

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Fluid Dynamics & Materials Processing 2024年第7期20卷 1539-1552页

作者： Xin Liu Kai yan bo Fang Xiaoyu Sun Daqiang Feng Li Yin School of GeoSciences Yangtze UniversityWuhan430100China State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation(Southwest Petroleum University) Chengdu610000China Downhole Service Company Petro China Qinghai Oilfield CompanyHaixi817000China Research Institute of Drilling and Production Technology Petro China Qinghai Oilfield CompanyDunhuang736200China PetroChina Qinghai Oilfield Company The Third Oil Plant Dunhuang736200China

In response to the complex characteristics of actual low-permeability tight reservoirs,this study develops a meshless-based numerical simulation method for oil-water two-phase flow in these reservoirs,considering complex boundary *** radial basis function point interpolation,the method approximates shape functions for unknown functions within the nodal influence *** shape functions constructed by the aforementioned meshless interpolation method haveδ-function properties,which facilitate the handling of essential aspects like the controlled bottom-hole flow pressure in horizontal ***,the meshless method offers greater flexibility and freedom compared to grid cell discretization,making it simpler to discretize complex geometries.A variational principle for the flow control equation group is introduced using a weighted least squares meshless method,and the pressure distribution is solved *** results demonstrate that the computational outcomes of the meshless point cloud model,which has a relatively small degree of freedom,are in close agreement with those of the Discrete Fracture Model(DFM)employing refined grid partitioning,with pressure calculation accuracy exceeding 98.2%.Compared to high-resolution grid-based computational methods,the meshless method can achieve a better balance between computational efficiency and ***,the impact of fracture half-length on the productivity of horizontal wells is *** results indicate that increasing the fracture half-length is an effective strategy for enhancing production from the perspective of cumulative oil production.

关键词： Weighted least squares method meshless method numerical simulation of low permeability tight reservoirs oil-water two-phase flow fracture half-length

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Non-linear relationship between age and subfoveal choroidal thickness in Chinese patients with proliferative diabetic retinopathy

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World Journal of Diabetes 2024年第9期15卷 1903-1915页

作者： Chun-yan Lei Jiang-Ying Xie Qi-bo Ran Mei-Xia Zhang Department of Ophthalmology and Research Laboratory of Macular Disease West China HospitalSichuan UniversityChengdu 610041Sichuan ProvinceChina Sichuan University Operating Room Department of AnesthesiologyWest China HospitalSichuan University/West China School of NursingSichuan UniversityChengdu 610041Sichuan ProvinceChina

BACKGROUND No study has investigated the change regularity between age and subfoveal choroidal thickness(SFCT)in proliferative diabetic retinopathy(PDR).AIM To investigate the relationship between the SFCT and age in Chinese patients with *** This was a cross-sectional retrospective *** participants were hospitalized individuals with type 2 diabetes who underwent vitrectomy for *** eyes that met the criteria were included in the *** necessary laboratory tests were performed at the time of *** macular thickness(CMT)and SFCT were two quantitative assessments made using enhanced depth imaging optical coherence *** was measured automatically and SFCT was measured manually with digital calipers provided by the Heidelberg Eye Explorer *** The final analysis included a total of 234 individuals with *** average age was 55.60 years old±10.03 years old,and 57.69%of the population was *** analysis revealed a significant negative connection between age and SFCT in patients with PDR[β=-2.44,95%confidence interval(95%CI):-3.46 to-1.42;P<0.0001].In the fully adjusted model,the correlation between SFCT and age remained steady(β=-1.68,95%CI:-2.97 to-0.39;P=0.0117).Spline smoothing showed that the relationship between SFCT and age in patients with PDR was non-linear,with an inflection point at 54 years of *** Our findings suggest that age is a key determinant of choroidal *** non-linear link between SFCT and age in PDR patients should be taken into account.

关键词： Age Subfoveal choroidal thickness Proliferative diabetic retinopathy Optical coherence tomography Central macular thickness

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Selective core-shell doping enabling high performance 4.6 V-LiCoO_(2)

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Journal of Energy Chemistry 2024年第8期95卷 684-693,I0015页

作者： Yueming Xia Jianrui Feng Jinhui Li yan Li Zhengfeng Zhang Xiaoqi Wang Jianli Shao Manling sui Pengfei yan Beijing Key Laboratory of Microstructure and Property of Solids College of Materials Science&EngineeringBeijing University of TechnologyBeijing 100124China PetroChina Research Institute of Petroleum Exploration&Development Beijing 100083China State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China

Constructing robust surface and bulk structure is the prerequisite for realizing high performance high voltage LiCoO_(2)(LCO).Herein,we manage to synthesize a surface Mg-doping and bulk Al-doping coreshell structured LCO,which demonstrates excellent cycling ***-cell shows 94.2%capacity retention after 100 cycles at 3.0-4.6 V(***/Li^(+))cycling,and no capacity decay after 300 cycles for fullcell test(3.0-4.55 V).Based on comprehensive microanalysis and theoretical calculations,the degradation mechanisms and doping effects are systematically *** the undoped LCO,high voltage cycling induces severe interfacial and bulk degradations,where cracks,stripe defects,fatigue H2 phase,and spinel phase are identified in grain *** the doped LCO,Mg-doped surface shell can suppress the interfacial degradations,which not only stabilizes the surface structure by forming a thin rock-salt layer but also significantly improves the electronic conductivity,thus enabling superior rate *** Al-doping can suppress the lattice"breathing"effect and the detrimental H3 to H1-3 phase transition,which minimizes the internal strain and defects growth,maintaining the layered structure after prolonged *** theoretical calculations,this work deepens our understanding of the doping effects of Mg and Al,which is valuable in guiding the future material design of high voltage LCO.

关键词： Lithium-ion battery Doping effect Failure mechanism High-voltage LiCoO_(2) Electron microscopy

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