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Comparison of Clinical Outcome of Autograft and AIIograft Reconstruction for Anterior Cruciate Ligament Tears

Chinese Medical Journal 2015年第23期128卷 3163-3166页

作者： yu-hua jia peng-fei sun Department of Orthopedics Qilu Hospital of Shandong University Jinan Shandong 250012 China

Background： Hamstring （HS） autograft and bone-patellar tendon-bone allograft are the most common choice for reconstruction of anterior cruciate ligament （ACL）. There was a little report about the clinical outcome and difference of arthroscopic ACL reconstruction using allograft and autograft. This study aimed to compare the clinical outcome of autograft and allograft reconstruction for ACL tears. Methods： A total of 106 patients who underwent surgery because of ACL tear were included in this study. The patients were randomly divided into two groups, including 53 patients in each group. The patients in group I underwent standard ACL reconstruction with HS tendon autografts, while others in group II underwent reconstruction with bone-patellar tendon-bone allograft. All the patients were followed up and analyzed; the mean follow-up was 81 months （range： 28-86 months）. Clinical outcomes were evaluated using the International Knee Documentation Committee （IKDC）, Lysholm scores, physical instability tests, and patient satisfaction questionnaires. The complication rates of both groups were compared. Tibial and femoral tunnel widening were assessed using lateral and anteroposterior radiographs. Results： At the end of follow-up, no significant differences were found between the groups in terms of IKDC, Lysholm scores, physical instability tests, patient satisfaction questionnaires, and incidences of arthrofibrosis. Tibial and femoral tunnel widening was less in the HS tendon autografts. This difference was more significant on the tibial side. Conclusions： In the repair of ACL tears, allograft reconstruction is as effective as the autograft reconstruction, but the allograft can lead to more tunnel widening evidently in the tibial tunnel, particularly.

关键词： Allograft Anterior Cruciate Ligament Autograft Reconstruction

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The α-Geometric Structures on Manifold of Positive Definite Hermite Matrices

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Acta Mathematica Sinica,English Series 2014年第12期30卷 2137-2145页

作者： Xiao Min DUAN hua fei sun Lin yu peng Department of Mathematics Beijing Institute of Technology School of Science Dalian Jiaotong University Department of Mathematics University of SurreyGuildfordSurrey GU2 7XHUK

Geometric structures of a manifold of positive definite Hermite matrices are considered from the viewpoint of information geometry.A Riemannian metric is defined and dual α-connections are *** the fact that the manifold is ±l-flat is ***,the divergence of two points on the manifold is given through dual potential ***,the optimal approximation of a point onto the submanifold is ***,some simulations are given to illustrate our results.

关键词： Positive definite Hermite matrices information geometry optimal approximation

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Microstructures and mechanical properties of SiBCNAl ceramics produced by mechanical alloying and subsequent hot pressing

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第10期11卷 761-765页

作者： Dan YE De-chang jia Zhi-hua YANG Zhen-lin sun peng-fei ZHANG Institute for Advanced Ceramics Harbin Institute of Technology Harbin 150001 China

Amorphous SiBCNAl powders were prepared via a mechanical alloying (MA) technique using crystalline silicon (Si), hexagonal boron nitride (h-BN), graphite (C), and aluminum (Al) as starting materials. SiBCNAl powders were consolidated by a hot pressing (HP) technique at 1800 °C under a pressure of 30 MPa in argon and nitrogen. The sintering atmosphere had a great influence on the microstructures and mechanical properties of the ceramics. The two ceramics had different phase compositions and fracture surface morphologies. For the ceramics sintered in argon, flexural strength, fracture toughness, elastic modulus and Vickers hardness were 421.90 MPa, 3.40 MPa·m1/2, 174.10 GPa, and 12.74 GPa, respectively. For the ceramics sintered in nitrogen, the mechanical properties increased, except for the Vickers hardness, and the values of the above properties were 526.80 MPa, 5.25 MPa·m1/2, 222.10 GPa, and 11.63 GPa, respectively.

关键词： SiBCNAl ceramics Hot pressing (HP) Mechanical properties Microstructure Mechanical alloying (MA)

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Preliminary evaluation of posterior dynamic lumbar stabilization in lumbar degenerative disease in Chinese patients

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Chinese Medical Journal 2012年第2期125卷 253-256页

作者： jia yu-hua sun peng-fei Shandong Univ Qilu Hosp Dept Orthopaed Jinan 250012 Shandong Peoples R China

Background There has been some controversy related to the use of the Wallis system,rather than disc fusion in the treatment of patients with degenerative spine ***,there are no reports concerning the application of this dynamic stabilization system in Chinese patients,who have a slightly different lifestyle with Western *** aim of this study was to assess the safety and efficacy of the dynamic stabilization system in the treatment of degenerative spinal diseases in Chinese *** The clinical outcomes of 20 patients with lumbar degenerative disease treated by posterior decompression with the Wallis posterior dynamic lumbar stabilization implant were *** of the patients completed the visual analogue scale and the Chinese version of the Oswestry Disability *** following radiologic parameters were measured in all patients：global lordotic angles and segmental lordotic angles （stabilized segments,above and below adjacent segments）.The range of motion was then *** Nineteen patients （95%） were available for *** mean follow-up period was （27.25±5.16） months （range 16-35 months）.The visual analogue scale decreased from 8.55±1.21 to 2.20±1.70 （P 〈0.001）,and the mean score on the Chinese version of the Oswestry Disability Index was improved from 79.58%±15.93% to 22.17%±17.24% （P 〈0.001）.No significant changes were seen in the range of motion at the stabilized segments （P=0.502） and adjacent segments （above,P=0.453; below,P=0.062）.The good to excellent result was 94.4% at the latest *** complications related to the use of the Wallis posterior dynamic lumbar stabilization *** It was found to be both easy and safe to use the Wallis posterior dynamic lumbar stabilization implant in the treatment of degenerative lumbar disease,and the early therapeutic effectiveness is *** Wallis system provides an alternative method for the treatment of lumbar degenerative disease.

关键词： lumbar degenerative disease low back pain prosthesis treatment outcome

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Hepatic MR imaging using IDEAL-IQ sequence:Will Gd-EOB-DTPA interfere with reproductivity of fat fraction quantification?

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World Journal of Clinical Cases 2023年第25期11卷 5887-5896页

作者： yuan Tian peng-fei Liu jia-yu Li Ya-Nan Li peng sun Department of Magnetic Resonance Imaging The First Affiliated Hospital of Harbin Medical UniversityHarbin 150001Heilongjiang ProvinceChina

BACKGROUND Iterative decomposition of water and fat with echo asymmetry and least squares estimation quantification sequence(IDEAL-IQ)is based on chemical shift-based water and fat separation technique to get proton density fat *** studies have shown that using IDEAL-IQ to test the stability and repeatability of liver fat is acceptable and has high *** To explore whether Gadoxetate Disodium(Gd-EOB-DTPA)interferes with the measurement of the hepatic fat content quantified with the IDEAL-IQ and to evaluate the robustness of this *** IDEAL-IQ was used to quantify the liver fat content at 3.0T in 65 patients injected with Gd-EOB-DTPA *** injection,IDEAL-IQ was estimated four times,and the fat fraction(FF)and R2* were measured at the following time points:Precontrast,between the portal phase(70 s)and the late phase(180 s),the delayed phase(5 min)and the hepatobiliary phase(20 min).One-way repeated-measures analysis was conducted to evaluate the difference in the FFs between the four time ***-Altman plots were adopted to assess the FF changes before and after injection of the contrast agent.P<0.05 was considered statistically *** The assessment of the FF at the four time points in the liver,spleen and spine showed no significant differences,and the measurements of hepatic FF yielded good consistency between T1 and T2[95%confidence interval:-0.6768%,0.6658%],T1 and T3(-0.3900%,0.3178%),and T1 and T4(-0.3750%,0.2825%).R2* of the liver,spleen and spine increased significantly after injection(P<0.0001).CONCLUSION Using the IDEAL-IQ sequence to measure the FF,we can obtain results that will not be affected by *** high reproducibility of the IDEAL-IQ sequence makes it available in the scanning interval to save time during multiphase examinations.

关键词： Gadoxetate Disodium Iterative decomposition of water and fat with echo asymmetry and least squares estimation quantification sequence Fat fraction Enhanced-Magnetic resonance imaging R2*

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Measurement of the Thermic Effect of Food in a Chinese Mixed Diet in Young People

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Biomedical and Environmental Sciences 2023年第7期36卷 585-594页

作者： TIAN Ying CAO Hong peng huaN yu Ping GONG jia Wei yuAN Kai hua CHEN Wen Zhuo HU Jing SHI yu fei Department of Nutrition and Food Hygiene School of Public HealthYangzhou UniversityYangzhou 225009JiangsuChina Department of Nutrition and Food Hygiene School of Tourism and CuisineYangzhou UniversityYangzhou 225127JiangsuChina

Objective To determine the thermic effect of food(TEF)in a Chinese mixed diet in young *** During the study,the participants were weighed and examined for body composition every *** total energy expenditure(TEE)of the participants was measured by the doubly labeled water method for 7 days,and during this period,basal energy expenditure was measured by indirect calorimetry and physical activity energy expenditure was measured by an *** value obtained by subtracting basal energy expenditure and physical activity energy expenditure from TEE was used to calculate *** Twenty healthy young students(18–30 years;10 male)participated in the *** energy intake of the participants was not significantly different from the Chinese Dietary Reference Intake of energy(P>0.05).The percentage of energy from protein,fat and carbohydrate were all in the normal *** intakes of fruits,milk and dietary fiber of the participants were significantly lower than those in the Chinese Dietary Guidelines(P0.05).When adjusted for body weight,there was no significant difference in either TEE or basal energy expenditure between the male and female participants(P>0.05).In addition,there was no significant difference in physical activity energy expenditure and TEF between the male and female participants(P>0.05).The percentage of TEF in TEE was 8.73%.Conclusion The percentage of TEF in TEE in a Chinese mixed diet in young people was significantly lower than 10%(P<0.001).A value of 10%is usually considered to be the TEF in mixed diets as a percentage of TEE.

关键词： Thermic effect of food Chinese mixed diet Total energy expenditure Basal energy expenditure Physical activity energy expenditure Doubly labeled water

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Synthetic analysis of a two-ribbon microflare

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Research in Astronomy and Astrophysics 2010年第1期10卷 83-90页

作者： Cheng Fang peng-fei Chen Rong-Lin jiang yu-hua Tang Department of Astronomy Nanjing University Nanjing 210093 China

High-resolution Stokes spectral data of Hα, Ca Ⅱ 8542A, and Fe 16302.5A lines for a two-ribbon microflare （TRMF） were simultaneously obtained by the THEMIS telescope on 2002 September 5. We derive the intensity, velocity, and longitudinal magnetic field maps. The hard X-ray emission observed by RHESSI provides evidence of nonthermal particle acceleration in the TRMF. Using Ha and Ca Ⅱ 8542A line profiles and a non-LTE calculation, we obtain semi-empirical atmospheric models for the two brightest kernels of the TRME Our result indicates that the temperature enhancement in the chromosphere is more than 2500 K. The kinetic and radiative energies at the kernels are also estimated, resulting in an estimate of the total energy of the TRMF of about 2.4×10^29 erg. Observations indicate that the TRMF results from the low coronal magnetic reconnection following the eruption of a small fila- ment. However, the local temperature ＂bump＂ in the chromosphere presents a puzzle for such a standard flare model. A possible solution to this is discussed.

关键词： sun chromosphere- sun flares - sun activity - sun magnetic fields

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CLINICAL APPLICATION OF BODY DIFFUSION WEIGHTED MR IMAGING IN THE DIAGNOSIS AND PREOPERATIVE N STAGING OF CERVICAL CANCER

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Chinese Medical Sciences Journal 2008年第3期23卷 133-137页

作者： hua-dan Xue Shuo Li fei sun Hong-yi sun Zheng-yu Jin jia-xin Yang Mei yu Department of Radiology Peking Union Medical College Hospital Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730 General Electric Medical Solution Shanghai 200336 Department of Gynecology and Obstetrics Peking Union Medical College Hospital Chinese Academy of Medical Sciences ＆ Peking Union Medical College Beijing 100730

Objective To evaluate the clinical impact of body diffusion weighted imaging (DWI) on the diagnosis and preoperative N staging of cervical cancer. Methods Twenty-four patients (mean age 37.9 years old) with proved cervical cancer by cervical biopsy and 24 female patients with other suspected pelvic abnormalities received preoperative body DWI scan. Results of body DWI were compared with pathological findings. The apparent diffusion coefficient (ADC) values of normal cervix and different pathological types of cervical cancer were compared. ADC value of normal or inflammatory lymph nodes was also compared with that of metastatic ones. Student's t test was used for statistical analysis. Results There were 5 adenocarcinomas and 19 epitheliomas showed with biopsy results, and DWI showed 21 cervical lesions out of them (87.5%). ADC values of the normal cervix (n = 24), epithelioma (n = 19), and adenocar- cinoma (n = 5) were (1.73 ± 0.31) ×10-3, (0.88 ± 0.22) ×10-3, and (1.08 ± 0.12) ×10-3 mm2/s, respectively. Statistical analysis showed significant difference in ADC value between normal cervical tissue and either tumor tissues (both P < 0.01). In patients had lymphadenectomy (n = 24), totally 67 lymph nodes including 16 metastatic lymph nodes were pathologically analyzed, and DWI showed 66 (98.5%) out of them. ADC values of normal/inflammatory and metastatic lymph nodes were (1.07 ± 0.16) ×10-3 and (0.77 ± 0.13) ×10-3 mm2/s (P < 0.01). Receiver operating characteristic (ROC) curve of ADC value of metastatic lymph node showed that area under curve was 0.961. Conclusions ADC value in cervical carcinoma is lower than that in normal cervix, and ADC may have predictive value in subtype discrimination. ADC value may improve the preoperative characterization of lymph node metastasis. And at least abdominal and pelvic DWI scan is suggested for N staging evaluation in such patients.

关键词： magnetic resonance diffusion weighted imaging cervical cancer

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Inclusions in large diamond single crystals at different temperatures of synthesis

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Chinese Physics B 2019年第2期28卷 439-444页

作者： fei Han Shang-Sheng Li Xue-fei jia Wei-Qin Chen Tai-Chao Su Mei-hua Hu Kun-peng yu jian-Kang Wang yu-Min Wu Hong-An Ma Xiao-peng jia School of Materials Science and Engineering Henan Polytechnic UniversityCultivating Base for Key Laboratory of Environment-friendly Inorganic Materials in University of Henan Province State Key Laboratory of Superhard Materials Jilin University

The inclusions in large diamond single crystals have effects on its ultimate performance, which restricts its industrial applications to a great extent. Therefore, it is necessary to study the inclusions systematically. In this paper, large diamond single crystals with different content values of inclusions are synthesized along the(100) surface by the temperature gradient method(TGM) under 5.6 GPa at different temperatures. With the synthetic temperature changing from 1200?C to 1270?C,the shapes of diamonds change from plate to low tower, to high tower, even to steeple. From the microscopic photographs of the diamond samples, it can be observed that with the shapes of the samples changing at different temperatures, the content values of inclusions in diamonds become zero, a little, much and most, correspondingly. Consequently, with the temperature growing from low to high, the content values of inclusions in crystals increase. The origin of inclusions is explained by the difference in growth rate between diamond crystal and its surface. The content values of inclusions in diamond samples are quantitatively calculated by testing the densities of diamond samples. And the composition and inclusion content are analyzed by energy dispersive spectroscopy(EDS) and x-ray diffraction(XRD). From contrasting scanning electron microscopy(SEM) photographs, it can be found that the more the inclusions in diamond, the more imperfect the diamond surface is.

关键词： inclusions large diamond single crystals high pressure and high temperature

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Improving the UV-light stability of silicon heterojunction solar cells through plasmon-enhanced luminescence downshifting of YVO_(4):Eu^(3+),Bi^(3+)nanophosphors decorated with Ag nanoparticles

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Journal of Energy Chemistry 2023年第6期81卷 212-220,I0007页

作者： Cheng-Kun Wu Shuai Zou Chen-Wei peng Si-Wei Gu Meng-fei Ni yu-Lian Zeng hua sun Xiao-Hong Zhang Xiao-Dong Su School of Physical Science and Technology and Jiangsu Key Laboratory of Thin FilmsSoochow UniversitySuzhou 215006JiangsuChina Institute of Functional Nano&Soft Materials(FUNSOM) Soochow UniversitySuzhou 215123JiangsuChina

The ultraviolet(UV)light stability of silicon heterojunction(SHJ)solar cells should be addressed before large-scale production and *** downshifting(DS)nanophosphors on top of solar cells that can convert UV light to visible light may reduce UV-induced degradation(UVID)without sacrificing the power conversion efficiency(PCE).Herein,a novel composite DS nanomaterial composed of YVO_(4):Eu^(3+),Bi^(3+)nanoparticles(NPs)and AgNPs was synthesized and introduced onto the incident light side of industrial SHJ solar cells to achieve UV *** YVO_(4):Eu^(3+),Bi^(3+)NPs and Ag NPs were synthesized via a sol-gel method and a wet chemical reduction method,***,a composite structure of the YVO_(4):Eu^(3+),Bi^(3+)NPs decorated with Ag NPs was synthesized by an ultrasonic *** emission intensities of the YVO_(4):Eu^(3+),Bi^(3+)nanophosphors were significantly enhanced upon decoration with an appropriate amount of~20 nm Ag NPs due to the localized surface plasmon resonance(LSPR)*** the introduction of LSPR-enhanced downshifting,the SHJ solar cells exhibited an~0.54%relative decrease in PCE degradation under UV irradiation with a cumulative dose of 45 k W h compared to their counterparts,suggesting excellent potential for application in UV-light stability enhancement of solar cells or modules.

关键词： Downshifting Silver nanoparticles Localized surface plasmon resonance UV-light stability Silicon heterojunction solar cells

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