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Electric scooter injuries:Incidence and injury patterns at a level I trauma center

Chinese Journal of Traumatology 2023年第6期26卷 334-338页

作者： nina d.fisher Ekenedilichukwu Nwakoby Hunter Hernandez Toni M.McLaurin department of Orthopedic Surgery Langone Orthopedic HospitalNew York UniversityNew YorkUnited States department of Orthopedic Surgery HealthþHospitals/Bellevue New York CityNew YorkUnited States

Purpose:Electric scooters(e-scooters)have become an increasingly popular mode of public transportation in recent *** the incidence of related injuries rises,it is important to understand specific fracture patterns unique to e-scooters and electric bikes(e-bikes)to help guide *** purpose of this study was to review the prevalence and describe specific fracture patterns of e-scooter and ebike related injuries at the busiest level 1 trauma center in the borough of ***:Chart review to determine mechanism of injury was performed on all patients for whom an orthopedic consult was requested from 1/1/2021 to 12/31/*** patients whose injuries were sustained due to an e-scooter or e-bike were further reviewed for demographics,injury characteristics including fracture pattern,and definitive injury *** patients who had an orthopedic consult placed for a reason other than an acute injury were *** statistics are reported as frequency(percentage)for categorical variables and means for continuous ***:Of the 1815 orthopedic consults requested,1357(74.8%)were for acute injury *** those with acute injuries,119(8.8%)sustained 136 e-scooter or e-bike related *** were 92(77.3%)males at an average age of(33.8±15.7)*** one-fifth of all patients presented in June 2021(26,21.8%).There was a 9.2%rate of open *** 136 injuries were evenly split between the upper and lower extremities,with 57(47.9%)upper extremity,57(47.9%)lower extremity injuries,and 5(4.2%)concomitant upper and lower extremity *** most common fracture patterns were ankle fractures(16,11.7%),followed by tibial shaft(14,10.2%),tibial plateau(13,9.5%),and radial head fractures(11,8.0%).There was a 33.3%incidence of associated posterior malleolar fractures in the spiral tibial shaft fractures,31.0%of posterior malleolar involvement and 18.8%of isolated vertical medial malleolar fractures in the ankle

关键词： Electric scooter Electric bike Tibial shaft Ankle fractures Tibial plateau fractures

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Taxonomy and phylogeny of the section Chaetoceros(Chaetocerotaceae,Bacillariophyta),with description of two new species

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Journal of Oceanology and Limnology 2024年第4期42卷 1286-1311页

作者： Xudan LU Mengyi ZHAI nina LUNdHOLM Yang LI Guangdong Provincial Key Laboratory of Biotechnology for Plant development Guangzhou Key Laboratory of Subtropical Biodiversity and BiomonitoringCollege of Life ScienceSouth China Normal UniversityGuangzhou 510631China Natural History Museum of denmark University of CopenhagenCopenhagen K 1353Denmark

Chaetoceros Ehrenberg is one of the most diverse genera of planktonic *** species in section Chaetoceros are characterized by cells and setae having numerous chloroplasts and being widely ***,the delimitations of some species are problematic because of limited morphological information in the classical *** strains of the section Chaetoceros were established,morphological features were studied using light and electron microscopy,and the hypervariable d 1-d 3 region of the nuclear ribosomal large subunit gene was sequenced to address phylogenetic *** species belonging to the section Chaetoceros were recorded,including two new species,*** *** *** *** hainanensis was characterized by straight chains,narrowly lanceolate to hexagonal apertures,sibling setae diverging in nearly right angles,stipule-shaped spines on terminal setae and arrowhead-shaped spines on intercalary *** had short straight chains,narrowly lanceolate apertures,arrowhead-shaped spines and circular poroids arranged in a grid pattern on terminal and intercalary *** phylogenetic analyses revealed six groups formed by 19 species within the section Chaetoceros,which was found to be *** subdivision of the section is still not well *** morphological characters within each group varied considerably and molecular information on more species are needed to enrich the phylogenetic profiling.

关键词： morphology large subunit ribosomal RNA encoding gene(LSU) section Chaetoceros Chaetoceros hainanensis Chaetoceros tridiscus

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Evaluation and projection of marine heatwaves in the South China Sea: insights from CMIP6 multi-model ensemble

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Acta Oceanologica Sinica 2024年第7期43卷 15-25页

作者： Kai Liu Kang Xu Tongxin Han Congwen Zhu nina Li Anboyu Guo Xiaolu Huang National Marine Environmental Forecasting Center Beijing 100081China State Key Laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081China National Meteorological Center China Meteorological AdministrationBeijing 100081China Inner Mongolia Autonomous Region Meteorological Observatory Huhhot 010051China

This study evaluates the performance of 16 models sourced from the coupled model intercomparison project phase 6(CMIP6)in simulating marine heatwaves(MHWs)in the South China Sea(SCS)during the historical period(1982−2014),and also investigates future changes in SCS MHWs based on simulations from three shared socioeconomic pathway(SSP)scenarios(SSP126,SSP245,and SSP585)using CMIP6 *** demonstrate that the CMIP6 models perform well in simulating the spatial-temporal distribution and intensity of SCS MHWs,with their multi-model ensemble(MME)results showing the best *** reasonable agreement between the observations and CMIP6 MME reveals that the increasing trends of SCS MHWs are attributed to the warming sea surface temperature *** various SSP scenarios,the year 2040 emerges as pivotal juncture for future shifts in SCS MHWs,marked by distinct variations in changing rate and *** is characterized by an accelerated decrease in MHWs frequency and a notably heightened increase in mean intensity,duration,and total days after ***,the projection results for SCS MHWs suggest that the spatial pattern of MHWs remains consistent across future ***,the intensity shows higher consistency only during the near-term period(2021−2050),while notable inconsistencies are observed during the medium-term(2041−2070)and long-term(2071−2100)periods under the three SSP *** the nearterm period,the SCS MHWs are characterized by moderate and strong events with high frequencies and relatively shorter *** contrast,during the medium-term period,MHWs are also characterized by moderate and strong events,but with longer-lasting and more intense events under the SSP245 and SSP585 ***,in the long-term period,extreme MHWs become the dominant feature under the SSP585 scenario,indicating a substantial intensification of SCS MHWs,effectively establishing a near-permanent state.

关键词： marine heatwaves South China Sea global warming future projections CMIP6

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Particle Swarm Optimization Bat Algorithm Path Automatically Planning Research for Police drones in Hilly Cities

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Journal of Systems Science and Information 2024年第1期12卷 125-144页

作者： Jing XUE Zefu TAN nina dAI Guoping LEI Chao HE Chongqing Three Gorges University Chongqing 404020China

Mountain cities are complex asymmetric dynamic network architectures,and the flight of UAVs in this environment is subject to various constraints,while efficiency is a crucial factor in the trajectory planning of police UAVs,which need to maintain high efficiency and safe flight paths between their starting and ending points,but the traditional trajectory planning method cannot meet the requirements of rapid maneuvering of police *** achieve this,a 3d terrain map is built,an objective function is established for the flight cost in the UAV trajectory planning process,and a planning algorithm called particle swarm optimization bat algorithm(PSOBA)is *** combines the characteristics of the bat algorithm(BA)and the particle swarm optimization algorithm(PSO)to improve population diversity and resolve the delayed convergence issue in the last phases of *** results show that PSOBA is more effective than BA,with a search time for the best solution that is approximately 20.43%shorter and a convergence value of the objective function that is approximately 38%*** is also able to plan a quicker,shorter,and safer flight path compared to other trail planning algorithms that enhance the bat *** findings suggest that PSOBA is a powerful algorithm with potential application value in UAV trajectory planning control in the mobile intelligence *** to the service of public social security.

关键词： hilly cities police drones asymmetrical trajectory planning particle swarm bat algorithm

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The use of lens anterior capsule disc for corneal endothelium protection during femtosecond laser-assisted cataract surgery in eyes with low endothelial cell density

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Advances in Ophthalmology Practice and Research 2024年第2期4卷 65-68页

作者： nina Asrini Noor Johan Hutauruk Tjahjono d.Gondhowiardjo JEC Eye Hospitals and Clinics 11520JakartaIndonesia

dear Editor,Cataract surgery affects the endothelial cells with a risk for corneal edema,decompensation,and a decrease in visual acuity.^(1-3)Previous studies had reported endothelial cell loss rates in standard ultrasound phacoemulsification cataract surgery(PCS)ranged from 4.5%to 42.6%,where there is a strong association between total ultrasound energy,nuclear density,surgical technique,and surgeon's skill.^(4-7)The reduction in corneal endothelial cell density(ECd)was even greater in eyes with FECd and primary corneal guttata that had cataract surgery and lens implantation,ranging from 17.3%to 24%.^(8)

关键词： corneal surgery cataract

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Microbial electricity-driven anaerobic phenol degradation in bioelectrochemical systems

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Environmental Science and Ecotechnology 2024年第1期17卷 40-47页

作者： Shixiang dai Falk Harnisch Micjel Chávez Morejòn nina Sophie Keller Benjamin Korth Carsten Vogt department of Environmental Microbiology Helmholtz Centre for Environmental Research GmbH-UFZLeipzigGermany department of Isotope Biogeochemistry Helmholtz Centre for Environmental Research GmbH-UFZLeipzigGermany

Microbial electrochemical technologies have been extensively employed for phenol ***,previous research has yielded inconsistent results,leaving uncertainties regarding the feasibility of phenol degradation under strictly anaerobic conditions using anodes as sole terminal electron *** this study,we employed high-performance liquid chromatography and gas chromatography-mass spectrometry to investigate the anaerobic phenol degradation *** findings provide robust evidence for the purely anaerobic degradation of phenol,as we identified benzoic acid,4-hydroxybenzoic acid,glutaric acid,and other metabolites of this ***,no typical intermediates of the aerobic phenol degradation pathway were ***-chamber reactors(t0.4 V ***)exhibited a phenol removal rate of 3.5±0.2 mg L^(-1) d^(-1),while two-chamber reactors showed 3.6±0.1 and 2.6±0.9 mg L^(-1) d^(-1) at anode potentials of t0.4 and t 0.2 V,*** results also suggest that the reactor configuration certainly influenced the microbial community,presumably leading to different ratios of phenol consumers and microorganisms feeding on degradation products.

关键词： Microbial electroremediation Geobacter Extracellular electron transfer Anaerobic phenol degradation Microbial syntrophy

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Validation of the age-adjusted shock index for pediatric casualties in Iraq and Afghanistan

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Military Medical Research 2021年第1期8卷 17-24页

作者： Camaren M.Cuenca Matthew A.Borgman Michael d.April Andrew d.fisher Steven G.Schauer JUS Army Institute of Surgical Research 3698 Chambers PassJBSA Fort Sam HoustonSan AntonioTX 78234-7767USA Brooke Army Medical Center JBSA Fort Sam HoustonSan AntonioTXUSA Uniformed Services University of the Heath Sciences BethesdaMDUSA Texas Army National Guard AustinTXUSA department of Surgery UNM School of MedicineAlbuquerqueNMUSA 59th Medical Wing JBSA LacklandSan AntonioTXUSA

Background: Pediatric casualties account for a notable proportion of encounters in the deployed setting based on the humanitarian medical care mission. Previously published data demonstrates that an age-adjust shock index may be a useful tool in predicting massive transfusion and death in children. We seek to determine if those previous findings are applicable to the deployed, combat trauma ***: We queried the department of defense Trauma Registry(dOdTR) for all pediatric subjects admitted to US and Coalition fixed-facility hospitals in Iraq and Afghanistan from January 2007 to January 2016. This was a secondary analysis of casualties seeking to validate previously published data using the shock index, pediatric age adjusted. We then used previously published thresholds to determine patients outcome for validation by age grouping, 1–3 years(1.2), 4–6 years(1.2), 7–12 years(1.0), 13–17 years(0.9).Results: From January 2007 through January 2016 there were 3439 pediatric casualties of which 3145 had a documented heart rate and systolic pressure. Of those 502(16.0%) underwent massive transfusion and 226(7.2%) died prior to hospital discharge. Receiver operating characteristic(ROC) thresholds were inconsistent across age groups ranging from 1.0 to 1.9 with generally limited area under the curve(AUC) values for both massive transfusion and death prediction characteristics. Using the previously defined thresholds for validation, we reported sensitivity and specificity for the massive transfusion by age-group: 1–3(0.73, 0.35), 4–6(0.63, 0.60), 7–12(0.80, 0.57), 13–17(0.77, 0.62). For death, 1–3(0.75, 0.34), 4–6(0.66–0.59), 7–12(0.64, 0.52), 13–17(0.70, 0.57). However, negative predictive values(NPV) were generally high with all greater than ***: Within the combat setting, the age-adjusted pediatric shock index had moderate sensitivity and relatively poor specificity for predicting massive transfusion and death. Better scoring systems are needed to p

关键词： Pediatric Massive Transfusion Shock Index Age

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基于CT图像三维重建的高温下再生混凝土孔隙特征研究

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材料导报 2024年第5期38卷 214-224页

作者：都思哲张淼张玉 Selyutina nina Smirnov Ivan 马树娟董晓强刘元珍太原理工大学土木工程学院太原030024 Coronation Property Co.Pty Ltd/MN Builders 新南威尔士州2620 圣彼得堡国立大学圣彼得堡190000

高温会导致混凝土微细观结构损伤劣化,进而导致混凝土力学性能下降。本工作利用计算机层析成像(CT)技术对高温后掺加玻化微珠的再生混凝土(Recycled aggregate concrete mixed with glazed hollow beads, GHB-RAC)试件孔隙结构特征进行... 详细信息

高温会导致混凝土微细观结构损伤劣化,进而导致混凝土力学性能下降。本工作利用计算机层析成像(CT)技术对高温后掺加玻化微珠的再生混凝土(Recycled aggregate concrete mixed with glazed hollow beads, GHB-RAC)试件孔隙结构特征进行识别,基于CT扫描与三维重构建模提取并分析了混凝土孔隙结构的特征参数,同时利用灰色关联理论探究孔隙结构特征参数对混凝土残余抗压强度的影响程度。研究结果表明,温度会影响GHB-RAC内部孔隙结构,内部孔隙孔径及表面积随温度升高而增大,温度的升高也会影响混凝土孔隙均匀性,加剧孔隙不均匀性分布;玻化微珠(Glazed hollow beads, GHB)对混凝土温度传导的阻碍作用明显,GHB的掺入改善了混凝土的孔隙结构,减弱了高温导致的孔隙畸化;孔隙尺寸、孔隙球体度及孔隙表面积与残余抗压强度的灰色关联度均在0.55以上,表明孔隙结构参数与残余抗压强度关联性较好。

关键词： CT扫描再生混凝土孔隙结构抗压强度灰色关联度

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光电极表面态的静态结构与时间分辨动力学和频光谱研究

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Chinese Journal of Chemical Physics 2024年第2期37卷 376-397,I0105页

作者：张彤 Jesse B.Brown Haley fisher Mallory Liebes 皇甫至超钱余亲饶毅美国犹他州立大学化学与生物化学系犹他州洛根84322

在光催化或光电催化反应过程中,光电极的表面态扮演着重要的角色,影响着电荷的产生、分离和利用过程,从而很大程度上决定了光电极的催化性能,通常用于研究光电极表面态以改进其性能的方法是间接的、非表面特异性的以及需要超高真空条件... 详细信息

在光催化或光电催化反应过程中,光电极的表面态扮演着重要的角色,影响着电荷的产生、分离和利用过程,从而很大程度上决定了光电极的催化性能,通常用于研究光电极表面态以改进其性能的方法是间接的、非表面特异性的以及需要超高真空条件下进行的方法,无法获得真实条件下的表面态信息。电子和频光谱和电子二次谐波等非线性光学方法具有表面特异性,可以在各种条件下实现表界面系统的原位研究.本研究介绍了表面态的重要性及其与催化性能的密切关系,概述研究半导体表面态、电场和载流子动力学的方法,并重点介绍了界面特异性光谱方法在该领域的最新贡献.包括通过相位信息提取带电表面态的宽带外插法电子二次谐波技术,提供表面态动力学信息的时间分辨电子和频光谱技术和探索表面态耦合的二维电子和频光谱技术,这些非线性光学方法的进一步发展将实现对光电极表面态和界面电子特性的多角度原位表征,提供对表面态及表面电荷转移过程更深层次的理解,以启发未来光催化和光电催化材料的研究和改进.

关键词：表面态电子和频光谱光催化光电催化

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雷电对航天飞行器作业的影响

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气象科技 1991年第6期19卷 55-62页

作者： Bruce d.fisher 郭昌明美国国家航空航天局兰利研究中心

传统上,飞机受雷击并不是飞行安全的主要问题。然而,由于合成材料使用不断增加和在飞行关键系统中使用数字航空电子系统,就要求在这类飞行器的设计中含有更专门的防雷措施以保证现有运输机比较好的雷电安全记录。另外,最近发生的一些不... 详细信息

传统上,飞机受雷击并不是飞行安全的主要问题。然而,由于合成材料使用不断增加和在飞行关键系统中使用数字航空电子系统,就要求在这类飞行器的设计中含有更专门的防雷措施以保证现有运输机比较好的雷电安全记录。另外,最近发生的一些不幸事故,其中最引人注目的是1987年3月在佛罗里达州卡纳维拉尔角空军基地大力神-半人马座A/C67飞行器的损失,表明飞机和运载火箭是十分容易遭受飞行器触发雷电现象的。本文评述美国航空航天局风暴危害计划(SHP)中在与飞机遭到雷击有关的大气现象方面得到的一些新发现。把这些资料与近期业务飞行飞机的雷击结果作了比较。最后,总括给出了NASA和美国国防部正在使用的新的触发闪电的“升空保障准则”(LCC)(下面称升空准则)。NASA的研究资料说明在雷暴中直接雷击飞行器的最大几率发生在环境温度约为—40℃左右。在这种环境中,相对降水和扰动强度可以忽略或比较弱。然而,业务飞行资料说明在日常作业中,大多数飞机雷击发生在温度在冻结层附近的非积雨云中。迄今非雷暴环境还不曾是空中飞行专门的闪电研究对象。

关键词：航天飞行器卡纳维拉尔角航空航天局航空电子系统飞行安全冻结层雷电现象美国国防部大气现象日常作业

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