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Usefulness of the acromioclavicular joint cross-sectional area as a diagnostic image parameter of acromioclavicular osteoarthritis

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World Journal of Clinical Cases 2022年第7期10卷 2087-2094页

作者： Young Joo Jee Youn Moon Jung Youn Han yun-sic bang Keum Nae Kang Young Su Lim Young-SoonChoi Young-Uk Kim Department of Anesthesiology and Pain Medicine CHA Ilsan Medical CenterSchool of MedicineCHA UniversityIlsanGyeonggi-do 10414South Korea Department of Anesthesiology and Pain Medicine Seoul National University Hospital College of MedicineSeoul 03080South Korea Department of Anesthesiology and Pain Medicine CHA Bundang Medical CenterSchool of MedicineSeongnamGyeonggi-do 13496South Korea Department of Anesthesiology and Pain Medicine National Police HospitalSeoul 05715South Korea Department of Anesthesiology and Pain Medicine Catholic Kwandong UniversityCollege of MedicineInternational St.Mary’s HospitalIncheon 22711South Korea

BACKGROUND Acromioclavicular joint(ACJ)space narrowing has been considered to be an important diagnostic image parameter of ACJ osteoarthritis(ACJO).However,the morphology of the ACJ space is irregular because of osteophyte formation,subchondral irregularity,capsular distention,sclerosis,and ***,we created the ACJ cross-sectional area(ACJCSA)as a new diagnostic image parameter to assess the irregular morphologic changes of the *** To hypothesize that the ACJCSA is a new diagnostic image parameter for *** ACJ samples were obtained from 35 patients with ACJO and 30 healthy individuals who underwent shoulder magnetic resonance(S-MR)imaging that revealed no evidence of *** coronal,T2-weighted,fat-suppressed SMR images were acquired at the ACJ level from the two *** measured the ACJCSA and the ACJ space width(ACJSW)at the ACJ on the S-MR images using our imaging analysis *** ACJCSA was measured as the cross-sectional area of the *** ACJSW was measured as the narrowest point between the acromion and the *** The average ACJCSA was 39.88±10.60 mm;in the normal group and 18.80±5.13 mm;in the ACJO *** mean ACJSW was 3.51±0.58 mm in the normal group and 2.02±0.48 mm in the ACJO *** individuals had significantly lower ACJCSA and ACJSW than the healthy *** operating characteristic curve analyses demonstrated that the most suitable ACJCSA cutoff score was 26.14 mm^(2),with 91.4%sensitivity and 90.0%*** The optimal ACJSW cutoff score was 2.37 mm,with 88.6%sensitivity and 96.7%*** though both the ACJCSA and ACJSW were significantly associated with ACJO,the ACJCSA was a more sensitive diagnostic image parameter.

关键词： Acromioclavicular joint Osteoarthritis Cross-sectional area Diagnosis

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Development of Precise Geoid Model for the Establishment of Consistent Height System in Geoga Grand Bridge Construction Area

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China Ocean Engineering 2009年第4期23卷 679-694页

作者： Dong-Ha LEE Hong-sic yun Department of Civil Architectural and Environmental System EngineeringSungkyunkwan University

The national benchmarks on islands were mostly established by trigonometric leveling in Korea. This method results in inaccuracy, which is a serious problem in Geoga Grand Bridge construction work that tried to link the mainland and the islands. The Geoga Grand Bridge （Pusan-Geoje fixed link project） was selected as the study area, a huge construction work in Korea that will connect the mainland （Pnsan） and an island （Gecje island）. However, the orthometric heights issued at benchmarks （JINH and GOFJ） were not consistent, because they did not refer to the same zero point, which would make the linking of the sections problematic. This paper introduces the precise local geoidas a vertical datum for the construction area in order to establish a consistent height system. To determine the precise local geoid for the construction area, we firstly developed a precise gravimetric geoid for Korea and its adjoining seas as a whole. This gravimetric geoid was developed by use of all available gravity data, including surface and satellite data on land and on the ocean. The gravimetrie gecid was computed by spherical fast fourier transform with modified Stokes＇ kernels. The remove-restore technique was used to eliminate the terrain effects by use of the RTM reduction and to determine the residual geoid by combining the GGM02S/EGM96 geopotential model, free-air gravity anomalies and high-resolutinn DEM data. Finally, the gravimetric model was fitted to the geoid heights obtained from GPS and tide observations （Ncps/Tiae） by least square coUocatian, to provide the final GPS-consistent local precise geoid model. The post-fit error （std. dev. ） of the final geoid to the NetS/Tide derived from GPS and tide observations was ± 2.2 cm for the construction area. We solved the height inconsistency problem by calculating the orthometric height of the benchmarks and the cnntrol points using the final geoid model. Also, the highly accurate orthometric height was estimated through the GPS/lev

关键词： precise local geoid consistent height system gravity observations GPS! Tide observations least squares fitting

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Low-molecular-weight fucoidan inhibits the proliferation of melanoma via Bcl-2 phosphorylation and PTEN/AKT pathway

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Oncology Research 2024年第2期32卷 273-282页

作者： MINJI PARK CHULHWAN bang WON-SOO yun yun-MI JEONG T&R Biofab Co. Ltd.Seongnam-si13487Korea Department of Dermatology Seoul St.Mary’s HospitalCollege of MedicineThe Catholic University of KoreaSeoul02706Korea Department of Mechanical Engineering Tech University of KoreaSi-heung City15073Korea

Fucoidan,a sulfate polysaccharide obtained from brown seaweed,has various bioactive properties,including anti-inflammatory,anti-cancer,anti-viral,anti-oxidant,anti-coagulant,anti-thrombotic,anti-angiogenic,and anti-Helicobacter pylori ***,the effects of low-molecular-weight fucoidan(LMW-F)on melanoma cell lines and three dimensional(3D)cell culture models are not well *** study aimed to investigate the effects of LMW-F on A375 human melanoma cells and cryopreserved biospecimens derived from patients with advanced *** wave was used to fragment fucoidan derived from Fucus vesiculosus into smaller *** and live/dead assays showed that LMW-F inhibited cell proliferation in both A375 cells and patientderived melanoma explants in a 3D-printed collagen *** PTEN/AKT pathway was found to be involved in the anti-melanoma effects of *** blot analysis revealed that LMW-F reduced the phosphorylation of Bcl-2 at Thr 56,which was associated with the prevention of anti-apoptotic activity of cancer *** findings suggested that LMW-F could enhance anti-melanoma chemotherapy and improve the outcomes of patients with melanoma resistance.

关键词： Low-molecular-weight fucoidan Melanoma Patient-derived melanoma explants in a 3D-printed collagen scaffold Anti-melanoma effect PTEN-AKT-Bcl-2 network

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RC beam strengthened with pre-stressed CFP under the secondary load

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Journal of China University of Mining and Technology 2008年第4期18卷 618-622页

作者： LONG bang-yun YUAN Guang-lin ZHU Dan-yu School of Architecture and Civil Engineering China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China

Feasibility of using pre-stressed carbon fiber plates to strengthen reinforced concrete beams was studied. Based on the characteristics of carbon fiber plates, we developed a pre-stress clamp and a device for applying the pre-stress. Contrast tests were conducted between ordinary carbon fiber plates and a pre-stressed carbon fiber plate and between secondary loaded carbon fiber plates and a concrete beam strengthened with a secondary loaded carbon fiber plate. On this basis, we analyzed the failure pattern, the width of cracks and their distribution, the cracking load, the yield load, the limit load and the relation between load and deflec- tion. The results indicate that using pre-stressed carbon fiber plates to strengthen concrete beams is feasible and effective.

关键词： pre-stress CFP secondary load strengthening RC beam

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Conservation and fruit biology of sichou oak {Quercus sichourensis,Fagaceae)- A critically endangered species in China

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Plant Diversity 2016年第5期38卷 233-237页

作者： Ke Xia Lei Fan Wei-bang Sun Wen-yun Chen Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of Sciences Kunming Botanical Garden Kunming Institute of BotanyChinese Academy of Sciences Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of Sciences

Several conservation programs have been started for the critically endangered sichou oak(Quercus sichourensis) since *** programs include detailed field investigations,seedling cultivation and research on the fruit biology of the *** this study,we first report on the five mature individual trees found in our 9-year field *** far,a total of 10 mature individuals have been *** *** trees are healthy and most produce healthy *** of *** are large with dry masses of 8.0-14.0 *** acorns had high moisture contents at collection and died shortly after(7-28 d) when dried with silica *** of Q,sichourensis acorns varied between *** with the acorns from Funing,the acorns collected from Ceheng were bigger,more viable(germination percentage was up to 96%),less sensitive to desiccation,and germinated *** occurs in regions with a distinct 5-6 month dry *** degradation is largely responsible for the rareness of Quercus sichorensis,but desiccation sensitivity of the acorns may also limit the regeneration of the species and potentially lead to its continued *** a species with extremely small populations(PSESP),*** is facing high risk of extinction and should be defined as a Critically Endangered species in the global IUCN Red List.

关键词： Conservation Cyclobalanopsis sichourensis Recalcitrant seed Desiccation-sensitive Germination Asian monsoon system

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Young＇s Modulus Enhancement and Measurement in CNT/Al Nanocomposites

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Acta Metallurgica Sinica(English Letters) 2018年第11期31卷 1121-1129页

作者： Zi-yun Yu Zhan-Qiu Tan Gen-Lian Fan Ren-bang Lin Ding-bang Xiong Qiang Guo Yi-Shi Su Zhi-Qiang Li Di Zhang State Key Laboratory of Metal Matrix Composites School of Material Science and Engineering Shanghai Jiao TongUniversity Shanghai 200240 China Shanghai Key Laboratory of Spacecraft Mechanism Shanghai 201108 China

Young＇s modulus is a critical parameter for designing lightweight structure, but Al and its alloys only demonstrate alimited value of 70-72 GPa. The introduction of carbon nanotubes （CNTs） is an effective way to make Al and its alloysstiffer. However, little research attention has been paid to Young＇s modulus of CNT/Al nanocomposites attributed to theuncertain measurement and unconvincing stiffening effect of CNTs. In this work, improved Young＇s modulus of 82.4 ± 0.4 GPa has been achieved in 1.5 wt% CNT/Al nanocomposite fabricated by flake powder metallurgy, which wasdetermined by resonance test and 13.5% higher than 72.6 ± 0.64 GPa of Al matrix. A comparative study and statisticalanalysis further revealed that Young＇s modulus determined by tensile test was relatively imprecise （83.1 ± 4.0 GPa） dueto the low-stress microplasficity or interface decohesion during tensile deformation of CNT/Al nanocomposite, while thevalue （98-100 GPa） was highly overestimated by nanoindentation due to the ＂pile-up＂ effect. This work shows an in-depthdiscussion on studying Young＇s modulus of CNT/Al nanocomposites.

关键词： CNT/Al nanocomposites Young's modulus Stiffening Resonance test

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Rapid diagnostic method for transplutonium isotope production in high flux reactors

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Nuclear Science and Techniques 2023年第3期34卷 125-142页

作者： Qing-Quan Pan Qing-Fei Zhao Lian-Jie Wang bang-Yang Xia yun Cai Xiao-Jing Liu School of Nuclear Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of ChinaChengdu 610200China

Transplutonium isotopes are scarce and need to be produced by irradiation in high flux ***,their production is inefficient,and optimization studies are *** study analyzes the physical nature of transplutonium isotope produc-tion using ^(252)Cf,^(244)Cm,^(242)Cm,and ^(238)Pu as *** methods based on the Monte Carlo burnup calculation have the limitations of many calculations and cannot analyze the individual energy intervals in detail;thus,they cannot sup-port the refined evaluation,screening,and optimization of the irradiation *** understanding the physical nature and simplifying the complexity of the production process,we propose a rapid diagnostic method for evaluating radiation schemes based on the concepts“single energy interval value(SEIV)”and“energy spectrum total value(ESTV)”.The rapid diagnostic method not only avoids tedious burnup calculations,but also provides a direction for *** optimal irradiation schemes for producing ^(252)Cf,^(244)Cm,^(242)Cm,and ^(238)Pu are determined based on a rapid diagnostic *** irradiation schemes can significantly improve production *** with the initial scheme,the optimal scheme improved the production efficiency of ^(238)Pu by 7.41 times;^(242)Cm,11.98 times;^(244)Cm,65.20 times;and ^(252)Cf,15.08 ***,a refined analysis of transplutonium isotope production is conducted and provides a theoretical basis for improving production efficiency.

关键词： Transplutonium isotope Rapid diagnostic method Production optimization Single energy interval value Energy spectrum total value

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Soft Magnetism and High Frequency Properties of Fe65Co35-MgF2 Granular Thin Films

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Chinese Physics Letters 2010年第6期27卷 206-209页

作者： YAO Dong-Sheng GE Shi-Hui ZHOU Xue-yun ZHANG bang-Min ZUO Hua-Ping Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparation Technology Faculty of Science Tianjin University Tianjin 300072 The Key Laboratory for Magnetism and Magnetic Materials Lanzhou University Lanzhou 730000 Faculty of Science Jiujiang University Jiujiang 332005

（Fe65 Co35 ）x （MgF2 ）1-x films with different metal volume fraction x are fabricated by magnetron sputtering. The results reveal that good soft magnetic properties can be obtained in a very wide x range （0.9 〉 x 〉 0.55） with Hc not exceeding 10 Oe, and high resistivity is also realized for the samples. Especially for the sample with x = 0.75, the coercivity in hard and easy axes is 1.6 Oe and 8.5 Oe, respectively, 4πMs = 14.1 kG and p reaches 1.16 mΩ***. The dependence of complex permeability μ =μ′ - jμ″ on frequency shows that the real part μ′is more than 190 below 2.0 GHz and ferromagnetic resonance frequency fr reaches 2.43 GHz, implying that the film is promising for high frequency applications. High resolution transmission electron micrographs show that the films consists of bcc Fe65 Co35 particles embedded uniformly in an amorphous insulating MgF2 matrix with particle size around a few nanometers. The excellent soft magnetic properties and high frequency properties are ascribed to exchange of coupling among magnetic granules, and the exchange coupling variation in a wide x range （0.9 〉 x 〉 0.55） is studied systematically by △M plots.

关键词： Magnetic properties Properties Property Films Packaging materials Sampling

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High-resolution neutronics model for ^(238)Pu production in high-flux reactors

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Nuclear Science and Techniques 2024年第5期35卷 226-236页

作者： Qing-Quan Pan Qing-Fei Zhao Lian-Jie Wang bang-Yang Xia yun Cai Jin-Biao Xiong Xiao-Jing Liu School of Nuclear Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of ChinaChengdu 610200China

We proposed and compared three methods(filter burnup,single energy burnup,and burnup extremum analysis)to build a high-resolution neutronics model for 238Pu production in high-flux *** filter burnup and single energy burnup methods have no theoretical approximation and can achieve a spectrum resolution of up to~1 eV,thereby constructing the importance curve and yield curve of the full energy *** burnup extreme analysis method combines the importance and yield curves to consider the influence of irradiation time on production efficiency,thereby constructing extreme *** three curves,which quantify the transmutation rate of the nuclei in each energy region,are of physical significance because they have similar distributions.A high-resolution neutronics model for ^(238)Pu production was established based on these three curves,and its universality and feasibility were *** neutronics model can guide the neutron spectrum optimization and improve the yield of ^(238)Pu by up to 18.81%.The neutronics model revealed the law of nuclei transmutation in all energy regions with high spectrum resolution,thus providing theoretical support for high-flux reactor design and irradiation production of ^(238)Pu.

关键词： ^(238)Pu Neutronics model High-flux reactor Spectrum resolution Spectrum optimization

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Experimental study on energy characteristics and ignition performance of recessed multichannel plasma igniter

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Chinese Physics B 2020年第6期29卷 339-348页

作者： bang-Huang Cai Hui-Min Song Min Jia yun Wu Wei Cui Sheng-Fang Huang Science and Technology on Plasma Dynamics Laboratory Air Force Engineering UniversityXi’an 710038China

In the extreme conditions of high altitude,low temperature,low pressure,and high speed,the aircraft engine is prone to flameout and difficult to start secondary ignition,which makes reliable ignition of combustion chamber at high altitude become a worldwide *** solve this problem,a kind of multichannel plasma igniter with round cavity is proposed in this paper,the three-channel and five-channel igniters are compared with the traditional *** discharge energy of the three igniters was compared based on the electric energy test and the thermal energy test,and ignition experiments was conducted in the simulated high-altitude environment of the component combustion *** results show that the recessed multichannel plasma igniter has higher discharge energy than the conventional spark igniter,which can increase the conversion efficiency of electric energy from 26%to 43%,and the conversion efficiency of thermal energy from 25%to 73%.The recessed multichannel plasma igniter can achieve greater spark penetration depth and excitation area,which both increase with the increase of *** the same height,the inlet flow helps to increase the penetration depth of the *** recessed multichannel plasma igniter can widen the lean ignition boundary,and the maximum enrichment percentage of lean ignition boundary can reach 31%.

关键词： high altitude extreme condition recessed multichannel plasma igniter discharge energy lean ignition boundary

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