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70篇 您的检索式:作者名="Mingjuan"
    题名 作者 年代 出处 被引量
1Research and Application Prospect of Computer Simulation on Heat Treatment Process显示文摘In this paper, a modified temperature-phase transformation-stress/strain field coupled 3D non-linear mathematical model was used in the computer simulation on heat treatment processes of workpieces including catch jaw, anchor ring, cold roller, large-scale bearing roller, nitriding crank shaft, etc. The simulation on complicated technologies such as pre-cooled quenching, double media quenching, self-tempering, difference temperature heating, nitriding distortion was carried out. The optimum design of heat treatment technology has been realized. The successful application of computer simulation on heat treatment have also been demonstrated.Pan Jiansheng, Li Yongjun, Cu Jianfeng, Hu Mingjuan Open Research Lab for High Temperature Materials & Testing, SJTU, Shanghai, 200030 2000Journal of Shanghai Jiaotong university(Science)2000,5,1:19
2An Ebola virus-encoded microRNA-like fragment serves as a biomarker for early diagnosis of Ebola virus disease显示文摘Zeliang Chen Hongwei Liang Xi Chen Yuehua Ke Zhen Zhou Mingjuan Yang Ke Zen Ruifu Yang Chao Liu Chen-Yu Zhang 2016Cell Research2016,26,3:7
3A novel solid-gas process to synthesize LaMnO_3 perovskite with high surface area and excellent activity for methane combustion显示文摘A novel solid-gas route to prepare LaMnO3 perovskite catalysts for methane combustion has been developed. The method was carried out using a polyvinylpyrrolidone-metal complex as precursor via a solid-gas process to obtain the target materials. The structure and properties of the precursor and the catalysts were characterized by FT-IR, TG-DSC, XRD and N2 adsorption-desorption techniques. The results indicate that the catalysts synthesized via the solid-gas process possess higher surface areas, better thermal resistance and catalytic activity as compared to those prepared with the conventional sol-gel citrate method.Guojun Zou Zhonglai Wang Mingjuan Sun Xu Luo Xiaolai Wang 2011Journal of Natural Gas Chemistry2011,20,3:7
4De Novo Design of Polymeric Carrier to Photothermally Release Singlet Oxygen for Hypoxic Tumor Treatment显示文摘Intratumoral hypoxia extremely limits the clinic applications of photodynamic therapy(PDT).Endoperoxides allow thermally releasing singlet oxygen(1O_(2))in a defned quantity and ofer promising opportunities for oxygen-independent PDT treatment of hypoxic tumors.However,previous composite systems by combining endoperoxides with photothermal reagents may result in unpredicted side efects and potential harmful impacts during therapy in vivo.Herein,we de novo design an all-in-one polymer carrier,which can photothermally release 1O_(2).Te strategy has been demonstrated to efectively enhance the production of 1O_(2) and realize the photodamage in vitro,especially in hypoxic environment.Additionally,the polymer carrier accumulates into tumor afer intravenous injection via the enhanced permeation and retention efects and accelerates the oxygen-independent generation of 1O_(2) in tumors.Te oxidative damage results in good inhibitory efect on tumor growth.Realization of the strategy in vivo paves a new way to construct photothermal-triggered oxygen-independent therapeutic platform for clinical applications.Tianci Huang Menglong Zhao Qi Yu Zheng Feng Mingjuan Xie Shujuan Liu Kenneth Yin Zhang Qiang Zhao Wei Huang 2019Research2019,,1:6
5Screening for differentially expressed genes in Anoectochilus roxburghii (Orchidaceae) during symbiosis with the mycorrhizal fungus Epulorhiza sp.显示文摘Mycorrhizal fungi promote the growth and development of plants, including medicinal plants. The mechanisms by which this growth promotion occurs are of theoretical interest and practical importance to agriculture. Here, an endophytic fungus (AR-18) was isolated from roots of the orchid Anoectochilus roxburghii growing in the wild, and identified as Epulorhiza sp. Tissue-cultured seedlings of A. roxburghii were inoculated with AR-18 and co-cultured for 60 d. Endotrophic mycorrhiza formed and the growth of A. roxburghii was markedly promoted by the fungus. To identify genes in A. roxburghii that were differentially expressed during the symbiosis with AR-18, we used the differential display reverse transcription polymerase chain reaction (DDRT-PCR) method to compare the transcriptomes between seedlings inoculated with the fungus and control seedlings. We amplified 52 DDRT-PCR bands using 15 primer combinations of three anchor primers and five arbitrary primers, and nine bands were re-amplified by double primers. Reverse Northern blot analyses were used to further screen the bands. Five clones were up-regulated in the symbiotic interaction, including genes encoding a uracil phosphoribosyltransferase (UPRTs; EC 2.4.2.9) and a hypothetical protein. One gene encoding an amino acid transmembrane transporter was down-regulated, and one gene encoding a tRNA-Lys (trnK) and a maturase K (matK) pseudogene were expressed only in the inoculated seedlings. The possible roles of the above genes, especially the UPRTs and matK genes, are discussed in relation to the fungal interaction. This study is the first of its type in A. roxburghii.LI Biao TANG MingJuan TANG Kun ZHAO LiFang GUO ShunXing 2012Science China(Life Sciences)2012,55,2:6
6Eocene Basins on the SE Tibetan Plateau: Markers of Minor Offset along the Xuelongshan–Diancangshan–Ailaoshan Structural System显示文摘The offset of geological bodies provides robust evidence of displacement along a fault or ductile shear zone. The amount of displacement along the Xuelongshan–Diancangshan–Ailaoshan structural system, southeastern Tibetan Plateau, is uncertain because of the lack of offset geological markers. This NNW–SSE-trending system is developed in three isolated metamorphic complexes and interjacent nonmetamorphosed rocks. They are expected to record similar post-Eocene strain, although their structural patterns should be distinct. Geological mapping in the area between the Xuelongshan and Diancangshan metamorphic complexes has revealed a small Eocene basin, the Madeng Basin, located to the west of the structural system. The sedimentary and volcanic successions of the Madeng Basin are comparable to those of the Jianchuan Basin, which is located to the east of the structural system. Zircon U–Pb geochronological and bulk geochemical data demonstrate that the volcanic rocks of both basins formed during 37–34 Ma and share the same geochemical features. These data suggest that the Madeng and Jianchuan basins previously constituted a single basin, with the distribution of high-K volcanic rocks in the basins defining an ENE–WSW-trending volcanic belt that shows a limited dextral offset of ≤20 km across the Xuelongshan–Diancangshan–Ailaoshan structural system. Therefore, the northern segment of the structural system records no evidence of large-scale lateral movement/displacement. The results suggest that the Indochina block, which is bounded by the Xuelongshan–Diancangshan–Ailaoshan structural system to the east and the Sagaing Fault to the west, has not extruded southward as a whole but rather has been deformed by pervasive crustal shortening.LIAO Cheng YANG Tiannan XUE Chuandong LIANG Mingjuan XIN Di XIANG Kun JIANG Lili SHI Pengliang ZHU Wenbin WAN Liangchun TANG Jing YU Jing WU Pinglei 2020Acta Geologica Sinica(English Edition)2020,94,4:5
7Numerical Simulation on Thermal Stress of Large-scale Bearing Roller during Heating Process of Final Heat Treatment显示文摘hi this paper, the non-linear finite element method had been applied to calculate the thermal stress evolving process of the large-scale bearing roller during heating process of final heat treatment. It was found that two stress peaks appeared during heating process and the second stress peak was higher than the first. If the preheating time was elongated, the second stress peak was reduced distinctly. Therefore, the pre-heating time should be elongated suitably to ensure safety in the practical manufacture process.Li Yongjun, Pan Jiansheng, Zhang Weimin, Gu Jianfeng, Hu Mingjuan Open Lab of the Educational Ministry for High Temperature Material & Tests, SJTU, Shanghai, 200030 2000Journal of Shanghai Jiaotong university(Science)2000,5,1:4
8Impurity analysis of gentamicin bulk samples by improved liquid chromatography-ion trap mass spectrometry显示文摘Several gentamicin bulk samples from different origins were investigated using an LC/MS method.LC equipped with ion trap MS with positive ionization was performed on a Capcell Pak C18(AQ) column with the mobile phase containing 50 mM trifluoroacetic(TFA) and methanol.Impurities present in batches of gentamicin bulk samples were elucidated and compared according to their fragmentation behavior.In total seventeen impurities present in samples,five impurities were not elucidated and two compounds were identified preliminarily.It was observed that the impurity profiles were different in samples from different origins which indicate necessity in the quality control of gentamicin.ZHENG Chao WANG BoChu WANG MingJuan HOOGMARTENS Jos SCHEPDAEL Ann Van ADAMS Erwin 2011Science China Chemistry2011,54,9:4
9Influences of different time intervals between loop electrosurgical excision and abdominal hysterectomy or radical hysterectomy on postoperative complications: a retrospective analysis显示文摘Objective:To study the influences of different time intervals between loop electrosurgical excision (LEEP) and abdominal hysterectomy or radical hysterectomy on postoperative complications. Methods:Sixty-eight patients, who received subsequent abdominal hysterectomy or radical hysterectomy after LEEP due to CIN Ⅲ and cervical cancer (IA1, IA2 and IB1), were included in the present study. The hospital and clinic records of these patients were reviewed. The patients were divided into three groups according to the time intervals between LEEP and hysterectomy or radical hysterectomy: group 1(within 48 h), group 2 (between 48 h to 6 weeks), and group 3(> 6 weeks ).Results: General characteristics of patients, including the mean age, delivery history, BMI, menopausal status, clinical stage and HPV infection, were comparable between patients of different groups. There were no significant differences in the mean transfusion amount, posthysterectomy hospital stay or operation time between different groups. The frequencies and spectrum of complications were not significantly affected by the time interval between LEEP and hysterectomy or radical hysterectomy. Conclusion: It is concluded that whenever the LEEP is done, the operation including hysterectomy or radical hysterectomy can be conducted at any time as it is necessary for the patients.Qu Haina Zhang Yan Zhang Junjie Hui Ning Xu Mingjuan 2010Journal of Medical Colleges of PLA(China)2010,25,1:4
10Research on Strong Pulsed Electromagnetic Field Test Method by Time-frequency Combination显示文摘Many conventional methods of testing strong and pulsed electromagnetic fields,the ones used in radars for example,had deficiencies due to the difficulty in obtaining simultaneous information about the electromagnetic field's peak both in the time domain and in the frequency domain.With regard to this problem,after analyzing the time-domain and the frequency-domain characteristics of radar pulsed signals,we propose a new time-frequency combination test method based on the correction of the test parameters,as well as its correction method at different bandwidths.The test method is applied in a quick test of a high-power pulsed radar signal,and the corrected results have error less than 1 dB in both the time domain and the frequency domain,which indicates that the proposed time-frequency combined method is effective in testing strong and pulsed electromagnetic fields.TANG Shiping CAI Mingjuan LI Jianxuan 2013高电压技术2013,39,10:4
11Study on extraction of thiophene from model gasoline with brønsted acidic ionic liquids显示文摘Brønsted acidic ionic liquids(ILs),N-methylimidazole hydrogen sulfate([HMIm]HSO_(4))and N-methylpyrrolidone hydrogen sulfate([HNMP]HSO_(4)),are synthesized and employed as extractants to extract thiophene from model gasoline(thiophene dissolved in noctane).The effect of extraction temperature,extraction time and volume ratio of ILs to model gasoline on desulfurization rates is investigated.Then,the optimal desulfurization conditions are obtained:the ratio of ILs to model gasoline is 1∶1,extraction temperature is 50℃ for[HMIm]HSO_(4)and 60℃ for[HNMP]HSO_(4),extraction time is 60 min.Meanwhile,the desulfurization rate of[HNMP]HSO_(4)for model gasoline is 62.8%,which is higher than that of[HMIm]HSO_(4)(55.5%)under optimal conditions.The reason is discussed on the basis of the interaction energy between thiophene and ILs at the B3LYP/6-311++G(d,p)level.Furthermore,the total desulfurization rate of[HNMP]HSO_(4)and[HMIm]HSO_(4)reaches 96.4%and 94.4%,respectively,by multistage extraction.Finally,the used ILs can be reused by vacuum drying,and their desulfurization rates are not significantly decreased after recycling 7 times in single-stage desulfurization.Xiaomeng WANG Mingjuan HAN Hui WAN Cao YANG Guofeng GUAN 2011Frontiers of Chemical Science and Engineering2011,5,1:3
12Field implementation of enzyme-induced carbonate precipitation technology for reinforcing a bedding layer beneath an underground cable duct显示文摘A suitable bearing capacity of foundation is critical for the safety of civil structures.Sometimes foundation reinforcement is necessary and an effective and environmentally friendly method would be the preferred choice.In this study,the potential application of enzyme-induced carbonate precipitation(EICP)was investigated for reinforcing a 0.6 m bedding layer on top of clay to improve the bearing capacity of the foundation underneath an underground cable duct.Laboratory experiments were conducted to determine the optimal operational parameters for the extraction of crude urease liquid and optimal grain size range of sea sands to be used to construct the bedding layer.Field tests were planned based on orthogonal experimental design to study the factors that would significantly affect the biocementation effect on site.The dynamic deformation modulus,calcium carbonate content and longterm ground stress variations were used to evaluate the bio-cementation effect and the long-term performance of the EICP-treated bedding layer.The laboratory test results showed that the optimal duration for the extraction of crude urease liquid is 1 h and the optimal usage of soybean husk powder in urease extraction solution is 100 g/L.The calcium carbonate production rate decreases significantly when the concentration of cementation solution exceeds 0.5 mol/L.The results of site trial showed that the number of EICP treatments has the most significant impact on the effectiveness of EICP treatment and the highest dynamic deformation modulus(Evd)of EICP-treated bedding layer reached 50.55 MPa.The area with better bio-cementation effect was found to take higher ground stress which validates that the EICP treatment could improve the bearing capacity of foundation by reinforcing the bedding layer.The field trial described and the analysis introduced in this paper can provide a practical basis for applying EICP technology to the reinforcement of bedding layer in poor ground conditions.Kai Xu Ming Huang Jiajie Zhen Chaoshui Xu Mingjuan Cui 2023Journal of Rock Mechanics and Geotechnical Engineering2023,15,4:2
13Expression of P-gp and miRNA-21 in Colorectal Cancer Tissues and the Clinical Significance显示文摘[Objectives]To study the expression of P-gp and miRNA-21 in colorectal cancer tissues and the relationship between the expression of P-gp and clinicopathological features,and to analyze the correlation between the expression of miRNA-21 and P-gp.[Methods]Immunohistochemical SP method was used to detect the expression level of P-gp in the tissues of 40 cases of colorectal cancer and the normal mucosal tissues 5 cm away from the corresponding cancer tissues,and the expression level of miRNA-21 in the paraffin tissues of the 40 cases was detected by RT-qPCR.[Results]The positive expression of P-gp was localized in the cell membrane,and the expression in colorectal cancer tissues was significantly higher than that in the corresponding adjacent tissues(P<0.05);the positive expression of P-gp was closely related to the degree of tumor differentiation and the depth of invasion(P<0.05),and the comparison results of P-gp expression in the differentiation groups of different cancer tissues showed that the expression level of P-gp in the moderately and poorly differentiated groups was significantly higher than that in the highly differentiated group(P<0.05),and the expression level of the moderately and poorly differentiated groups was similar(P>0.05).The expression of miRNA-21 in all cancer tissues was higher than that in the corresponding adjacent tissues(P<0.05),and the expression levels of miRNA-21 in differentiation groups of different cancer tissues were 1.286,1.445 and 1.992 times of those in the corresponding adjacent tissues,respectively;the comparison results of miRNA-21 between different differentiation groups showed that the expression level of miRNA-21 in the poorly differentiated group was significantly higher than that in the highly differentiated group and the moderately differentiated group(P<0.05),while the expression level of miRNA-21 in the highly differentiated group and the moderately differentiated group was similar(P>0.05).Spearman correlation analysis showed that there was a positive correlation on the expression between the two in colorectal cancer tissues(r=0.423,P<0.05).[Conclusions]The expression levels of miRNA-21 and P-gp are closely related to the differentiation degree of clinical colorectal cancer,the lower the differentiation degree,the higher the expression level of the two.Xiaoli YAN Peng YAN Yanfang FAN Jing XUE Mingjuan WANG Jining ZHENG 2020Medicinal Plant2020,11,6:1
14Application Experience of Moist Wound Healing Theory Combined with Modern New Dressings in the Treatment of Pressure Ulcers显示文摘Objective:Research on the effect of moist wound healing theory in a combination with modern new dressing treatment in patients diagnosed with pressure ulcers.Method:Selected 30 patients with pressure ulcers from our hospital,which is Shandong Tai an Municipal Hospital,from January 2019 to January 2021 were divided into experimental group(15 cases,treated with moist wound healing theory combined with modern new dressings)and control group(15 cases,applied conventional treatments).The treatment effect,time of wound edema subsidence,wound healing time,number of dressing changes,granulation tissue growth time,and diameter reduction time were compared between the two groups.Results:The total effective rate of the experimental group(93.33%,14/15)was higher than that of the control group(53.33%,8/15),P<0.05;the time to subsidence of wound edema in the experimental group was(3.11±0.22),and the time for wound healing was(12.78±0.45),the number of dressing changes(7.13±0.34)times,the growth time of granulation tissue(5.43±2.22),the diameter reduction time(6.25±3.75),compared with the control group,P<0.05.Conclusion:In the clinical treatment of patients diagnosed with pressure ulcers,the effective combination of moist healing theory and modern new dressing therapy has significant effects,whereby it speeds up the healing process of the pressure ulcers,and it is proven to be worthy to be promoted for usage.Na Zhao Mingjuan Zhao Yulan Zhao 2021Journal of Clinical and Nursing Research2021,5,4:1
15Removal of Thiophene and Its Derivatives from Model Gasoline Using Polymer-Supported Metal Chlorides Ionic Liquid Moieties 显示文摘Wang Xiaomeng Wan Hui Han Mingjuan 2012Ind Eng Chem Res2012,51,8:1
16Application of computer simulation on quenching process显示文摘Gu Jianfeng Pan Jiansheng Hu Mingjuan 2000Heat Treatment of Metals2000,25,5:1
17Carbon stock and sink economic values of forest ecosystem in the forest industry region of Heilongjiang Province, China显示文摘The values of forest carbon stock (CSV) and carbon sink (COV) are important topics in the global carbon cycle. We quantitatively analyzed the factors affecting changes in both for forest ecosystem in 2000−2015. With multiple linear stepwise regression analysis, we obtained the factors that had a significant impact on changes of CSV and COV, and then the impacts of these variables on CSV and COV were used for further quantitative analysis using the vector autoregressive model. Our results indicated that both stand age and afforestation area positively affect CSV and COV;however, the forest enterprise gross output value negatively affects CSV. Stand age has the largest long-term cumulative impact on CSV and COV, reaching 40.4% and 9.8%, respectively. The impact of enterprise gross output value and afforestation area on CSV and COV is the smallest, reaching 4.0% and 0.3%, respectively.Mingjuan Li 2022Journal of Forestry Research2022,33,3:1
18Coherent Chemical Variation Trends of the 55-25 Ma Magmatic Rocks in SE Tibet:N-S Direction Lithospheric Stretching of Eurasia during Early Stage of India-Eurasia Collision显示文摘The progressive indentation of India into Eurasia generated an E-W-trending orthogonal collision belt and a N-S-trending oblique collision belt.Compiling available data reveals that~70%of the Cenozoic igneous rocks in eastern and southeastern Tibet are concentrated within an ENE-trending,~550-km long and~250-km wide magmatic zone(CMZ)that once separated the orthogonal and oblique collision belts.The Latitude 26°N Line is now its southern boundary.The onset timing of magmatism of the CMZ varies gradually from~55 Ma in the westernmost part to~27 Ma in the easternmost.Then the magmatism successively occurred and suddenly stopped at~25 Ma.The segmented and coherent chemical variation trends found suggest that the CMZ magmatic rocks were formed due to partial melting of the heterogeneous upper mantle and crusts of Eurasia.Subduction of Paleo-and Neotethyan oceanic plates generated this compositional and mineralogical heterogeneity.Combined with available geophysical data,the CMZ was diachronously formed in response to asthenosphere upwelling induced by NNW-SSE-direction lithosphere stretching.The difference in responses of the orthogonal and oblique collision belts to the indentation of the Indian continent has led to this lithosphere stretching.YANG Tiannan DONG Mengmeng XUE Chuandong XIN Di LIANG Mingjuan 2023Acta Geologica Sinica(English Edition)2023,97,5:1
19Stability analysis of supply chain collaboration for project显示文摘Li Mingjuan Tian Guoshuang 2011Proceedings of thelSth IEEE Interna- tional Conference on Industrial Engineering and Engineering Man- agement2011,,:1
20A Special Phase Transformation Phenomenon in High-nitrogen Austenite显示文摘HU Mingjuan PAN Jiansheng ZHU Zuchang QIU Chuncheng 2001Materials Letters2001,50,:1
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