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1DYNAMICS MODEL AND SIMULATION OF FLAT VALVE SYSTEM OF INTERNAL COMBUSTION WATER PUMP显示文摘The dynamics differential equations are constructed, and the initial conditions are alsogiven. Simulation shows the following conclusions: The water pressure in cylinder has great instanta-neous pulsation and phase step when outlet valve or inlet valve opens, but is more gently in othertime; The volume efficiency is influenced by the output pressure slightly, and decreases as the work-ing rotational speed increases; When the inherent frequency of the valves is integer multiple of theworking frequency, the volume efficiency of system will decrease evidently.Zhang Hongxin Zhang Tiezhu Wang Yushun Zhao Hong Huo Wei 2005Chinese Journal of Mechanical Engineering2005,18,3:39
2Influence of Valve's Characteristic on Total Performance of Three Cylinders Internal Combustion Water Pump显示文摘Intenal combustion pump(ICP) is a new type power device turning the thermal energy from fuel combustion into fluid pressure energy.Three cylinders prototype has just been developed.The study on the influence of valve's characteristic on ICP's total performance will found the base for its optimum design.Based on the theoretical and testing fruits of single cylinder prototype, the performance of the valves and complete appliance of the latest is simulated.When the natural frequency of valves is approximately to the round number times of the working frequency, volumetric efficiency is seriously low.The nominal rotational speed of the prototype is nearly to the speed where the volumetric efficiency is lowest, which is harmful to the normal work of ICP, so further structure optimization of valves should be carried out.The change of volumetric efficiency has great influence on the fuel consumption rate, output flow, effective thermal efficiency, effective power, and so on, but little on output pressure.ZHANG Hongxin ZHANG Tiezhu WANG Weichao 2009Chinese Journal of Mechanical Engineering2009,22,1:14
3Response of tree-ring width to rainfall gradient along the Tianshan Mountains of northwestern China显示文摘By comparing the long-term tree-ring growths at various geographic scales, we can make clear the effects of environmental variations on tree growth, and get an understanding of the responses of forest ecosystems to the possible changes in global and regional climate. Radial tree-ring growth of Picea schrenkiana and its relationship to air temperature and precipitation were investigated across longi- tude transects on the north slopes of the Tianshan Mountains in northwestern China. Tree-ring samples were collected and residual chronologies were developed for three different regions along a gradient of decreasing precipitation from west to east. Response-function analysis was conducted to quantify the relationships between tree-ring chronologies and climate variables, such as monthly mean temperature and monthly precipitation from 1961 to 1998, using the PRECON software program. The statistical characteristics of the chronologies showed that the three chronologies constructed in this study con- tained significant environmental signals and were well suitable to reveal the impacts of climatic change on tree growth and forest productivity. Annual ring-width variations were similar among the three sites, but the variability was greatest in the east. This research showed that the growth trends of Picea schrenkiana in the Tianshan Mountains have not followed a uniform pattern. Response-function analy- sis indicated that there were significant correlations between tree growth and climatic factors in all the three regions, among which precipitation was the principal. With decreasing precipitation, the response of tree-ring widths to increasing temperature changed from a positive to a negative correlation. As for precipitation, the positive relationship to tree-ring width always dominates. It could be expected that with increased temperature and decreased precipitation, the importance of precipitation to tree growth would increase, and the response of tree growth to environmental changes would also increase. This study emphasizes the importance of regional-scale investigations into the biosphere-climate interac- tions. The results of this research indicated a substantial increment of tree-ring radial growth as a re- sult of warmer and wetter climate in the eastern regions. However, climate change will have less effect on forest growth and primary production in the western regions.SANG WeiGuo WANG YunXia SU HongXin LU ZhaoHua 2007Chinese Science Bulletin2007,52,21:12
4Signaling pathways and targeted therapy for myocardial infarction显示文摘Although the treatment of myocardial infarction(MI)has improved considerably,it is still a worldwide disease with high morbidity and high mortality.Whilst there is still a long way to go for discovering ideal treatments,therapeutic strategies committed to cardioprotection and cardiac repair following cardiac ischemia are emerging.Evidence of pathological characteristics in MI illustrates cell signaling pathways that participate in the survival,proliferation,apoptosis,autophagy of cardiomyocytes,endothelial cells,fibroblasts,monocytes,and stem cells.These signaling pathways include the key players in inflammation response,e.g.,NLRP3/caspase-1 and TLR4/MyD88/NF-κB;the crucial mediators in oxidative stress and apoptosis,for instance,Notch,Hippo/YAP,RhoA/ROCK,Nrf2/HO-1,and Sonic hedgehog;the controller of myocardial fibrosis such as TGF-β/SMADs and Wnt/β-catenin;and the main regulator of angiogenesis,PI3K/Akt,MAPK,JAK/STAT,Sonic hedgehog,etc.Since signaling pathways play an important role in administering the process of MI,aiming at targeting these aberrant signaling pathways and improving the pathological manifestations in MI is indispensable and promising.Hence,drug therapy,gene therapy,protein therapy,cell therapy,and exosome therapy have been emerging and are known as novel therapies.In this review,we summarize the therapeutic strategies for MI by regulating these associated pathways,which contribute to inhibiting cardiomyocytes death,attenuating inflammation,enhancing angiogenesis,etc.so as to repair and re-functionalize damaged hearts.Qing Zhang Lu Wang Shiqi Wang Hongxin Cheng Lin Xu Gaiqin Pei Yang Wang Chenying Fu Yangfu Jiang Chengqi He Quan Wei 2022Signal Transduction and Targeted Therapy2022,7,4:11
5Involvement of annexin A2 in anti-β2GPI/β2 GPI-induced tissue factor expression on monocytes显示文摘成长证据表明那 beta_2-glycoprotein (beta_2GPI ) 我是为仔细与 thrombotic 事件 inantiphospholipid 症候群(APS ) 被联系的 antiphospholipid 抗体的关键目标[1 ] 。Anti-beta_2GPI/beta_2GPI 建筑群能绑在单核白血球和 endothelial 房间的表面膜,支持织物这些房间上的因素(TF ) 活动,并且因此增加血栓的风险。然而,位于行动 ofanti-beta_2GPI/beta_2GPI 下面的机制很好没被理解。效果 ofanti-beta_2GPI/beta_2GPI 要求一个信号的转导进房间并且因此,包含房间表面受体,这被建议。因为 anti-beta_2GPI/beta_2GPI 的效果不看起来被 Fc 受体,也不由细胞膜的否定地控告的 phospholipids 调停,调查者安置为 beta_2GPI 的不同房间表面受体的存在。Hong Zhou Shucai Ling Yin Yu Ting Wang Hongxin Hu 2007Cell Research2007,17,8:9
6Zero-knowledge proofs of retrievability显示文摘Proof of retrievability (POR) is a technique for ensuring the integrity of data in outsourced storage services.In this paper,we address the construction of POR protocol on the standard model of interactive proof systems.We propose the first interactive POR scheme to prevent the fraudulence of prover and the leakage of verified data.We also give full proofs of soundness and zero-knowledge properties by constructing a polynomial-time rewindable knowledge extractor under the computational Diffie-Hellman assumption.In particular,the verification process of this scheme requires a low,constant amount of overhead,which minimizes communication complexity.ZHU Yan WANG HuaiXi HU ZeXing AHN Gail-Joon HU HongXin 2011Science China(Information Sciences)2011,54,8:8
7Spontaneous apoptosis of cells in therapeutic stem cell preparation exert immunomodulatory effects through release of phosphatidylserine显示文摘Mesenchymal stem cell(MSC)-mediated immunomodulation has been harnessed for the treatment of human diseases,but its underlying mechanism has not been fully understood.Dead cells,including apoptotic cells have immunomodulatory properties.It has been repeatedly reported that the proportion of nonviable MSCs in a MSC therapeutic preparation varied from 5-50%in the ongoing clinical trials.It is conceivable that the nonviable cells in a MSC therapeutic preparation may play a role in the therapeutic effects of MSCs.We found that the MSC therapeutic preparation in the present study had about 5%dead MSCs(DMSCs),characterized by apoptotic cells.Namely,1×10^(6) MSCs in the preparation contained about 5×10^(4) DMSCs.We found that the treatment with even 5×10^(4) DMSCs alone had the equal therapeutic effects as with 1×10^(6) MSCs.This protective effect of the dead MSCs alone was confirmed in four mouse models,including concanavalin A(ConA)-and carbon tetrachloride(CCI4)-induced acute liver injury,LPS-induced lung injury and spinal cord injury.We also found that the infused MSCs died by apoptosis in vivo.Furthermore,the therapeutic effect was attributed to the elevated level of phosphatidylserine(PS)upon the injection of MSCs or DMSCs.The direct administration of PS liposomes(PSLs)mimic apoptotic cell fragments also exerted the protective effects as MSCs and DMSCs.The Mer tyrosine kinase(MerTK)deficiency or the knockout of chemokine receptor C-C motif chemokine receptor 2(CCR2)reversed these protective effects of MSCs or DMSCs.These results revealed that DMSCs alone in the therapeutic stem cell preparation or the apoptotic cells induced in vivo may exert the same immunomodulatory property as the'living MSCs preparation'through releasing PS,which was further recognized by MerTK and participated in modulating immune cells.Xuemei He Weiqi Hong Jingyun Yang Hong Lei Tianqi Lu Cai He Zhenfei Bi Xiangyu Pan Yu Liu Lunzhi Dai Wei Wang Canhua Huang Hongxin Deng Xiawei Wei 2021Signal Transduction and Targeted Therapy2021,6,8:6
8Carbothermic reduction of vanadium titanomagnetite with the assistance of sodium carbonate显示文摘The carbothermic reduction of vanadium titanomagnetite concentrate(VTC)with the assistance of Na_(2)CO_(3)was conducted in an argon atmosphere between 1073 and 1473 K.X-ray diffraction and scanning electron microscopy were used to investigate the phase transformations during the reaction.By investigating the reaction between VTC and Na_(2)CO_(3),it was concluded that molten Na_(2)CO_(3)broke the structure of titanomagnetite by combining with the acidic oxides(Fe_(2)O_(3),TiO_(2),Al_(2)O_(3),and SiO_(2))to form a Na-rich melt and release FeO and MgO.Therefore,Na_(2)CO_(3)accelerated the reduction rate.In addition,adding Na_(2)CO_(3)also benefited the agglomeration of iron particles and the slag–metal separation by decreasing the viscosity of the slag.Thus,Na_(2)CO_(3)assisted carbothermic reduction is a promising method for treating VTC at low temperatures.Luming Chen Yulan Zhen Guohua Zhang Desheng Chen Lina Wang Hongxin Zhao Fancheng Meng Tao Qi 2022International Journal of Minerals,Metallurgy and Materials2022,29,2:5
9The effect of hyperglycemia on blood brain barrier of rats with focal cerebral ischemia/reperfusion injury显示文摘Objective: To determine whether hyperglycemia could aggravate the microvascular damage in ischemic stroke. Methods: Hyperglycemia model was made by injection of streptozocin through subcutaneous injection in wistar rats. Using the suture model, the rats were subjected to 3 h of focal ischemia and different times of reperfusion,including 6,12,24,48,96 h and 7 d. TTC dyeing was used to show the infarction area of rats. The infarctive volume of rats were calculated by computer imaging analysis system;Matrix metalloproteinase (MMP-2) and (MMP-9)were detected by immunohistochemistry and in situ hybridization histochemistry in Wistar rats. Results: The infarctive volume was siginificantly larger in hyperglycemic rats than that of nonhyperglycemic rats. The level of MMP-2,MMP-9 expression in the group of hyperglycemic rats was higher than that of nonhyperglycemic rats. Conclusion: Hyperglycemia aggravated the injury of focal ischmia-reperfusion in wistar rats and the higher expression of MMP-2,MMP-9 might be one of the mechanism in aggravation of focal ischemia/reperfusion injury.Hongxin Wang Yuanwu Mei 2005Journal of Nanjing Medical University2005,19,5:4
10Semi-stationary subdivision operators in geometric modeling显示文摘Based on the view of operator, a novel uniform subdivision construction method is proposed for free form curve and surface design. This method can give an appropriate manner of parameter change in the subdivision iteration with fewer parameters and better shape control, such as building local revolving surfaces. The convergent property of order 2 subdivision surface is elegantly analyzed using computing techniques of matrix. This method is promised to be valuable in Computer Aided Design and computer graphics, due to the simplicity both in mathematical theory and practical implementation, the similarity to the B-spline curve and surface, G1 continuity, the affine invariability and local flexible control.ZHANG Hongxin and WANG Guojin(State Key Laboratory of CAD & CG, Institute of Computer Images and Graphics, Zhejiang University, Hangzhou 310027, China) 2002Progress in Natural Science:Materials International2002,12,10:4
11Effect of electroacpuncture of Neiguan(PC 6)and Tianquan(PC 2)on skin temperature,blood perfusion,and adrenoceptor response in rats with acute myocardial ischemia显示文摘OBJECTIVE: To investigate the effect of electroacupuncture(EA) of acupoints Neiguan(PC 6) and Tianquan(PC 2) on the skin temperature, blood perfusion, and alpha1-and beta2-adrenoreceptor(α1-AR and β2-AR) protein and m RNA level in rats with acute myocardial ischemia.METHODS: Thirty male adult Wistar rats [(230 ±20) g] were randomly assigned into five groups(n = 6 each): a control group, sham operation group, model group, model group treated with EA at low frequency(L-EA, 2 Hz, 1 m A) and model group treated with EA at high frequency(H-EA, 100 Hz, 1 m A). The rat model was prepared by ligating the left anterior descending coronary artery. Electroacupuncture was performed at the left Neiguan(PC 6) for 20 min daily for 3 d. After the 3 rd time of the treatment, measurements of skin blood perfusion and temperature in Neiguan(PC 6) and Tianquan(PC 2) in all groups were made by laser speckle contrast imaging and infrared thermal image instrument. Real-time PCR and ELISA were used to measure m RNA level and protein level of α1-AR andβ2-AR in the skin tissues of Neiguan(PC 6) and Tianquan(PC 2), respectively. Serum levels of c Tn T and electrocardiogram were used to identify the state of myocardium.RESULTS: In the group receiving electroacupunture at Neiguan(PC 6), compared with control group,the skin temperature, blood perfusion, and β2-AR m RNA and protein level of model group significantly decreased(P < 0.05), α1-AR m RNA and protein level of model group significantly increased(P < 0.05);compared with model group, the skin temperature,blood perfusion, and β2-AR m RNA and protein level of L-EA significantly increased(P < 0.05), α1-AR m RNA and protein level of L-EA and H-EA significantly decreased(P < 0.05). The same trend has taken place in the former four groups of the Tianquan(PC 2).CONCLUSION: Low-or high-frequency electroacupuncture can improve the skin temperature and blood perfusion which may be induced by decreasingthelevelofα1-ARandincreasingthelevelofβ2-AR of the Neiguan(PC 6) and Tianquan(PC 2) in the rat with acute myocaidial ischemia.Wang Dan Ji Bo Zhao Guozhen Yan Mingna Bai Hongxin Sun Xiaomin Dai Jian Lu Yawen Liu Yitian You Min Wu Jiaojuan Ge Yunpeng Su Hang Cheng Kai 2017Journal of Traditional Chinese Medicine2017,37,6:3
12Synergistic effects of ginseng stem and leaf-extracted ginsenoside and choline on improving learning and memory in rats Association verification experiment in animals with multiple learning and memory disorders显示文摘BACKGROUND: Ginsenoside extracted from the stem and leaf of ginseng (GSL) and choline have both been shown to improve learning and memory functions; however,further studies are needed to understand the synergistic effects of a combination of both. OBJECTIVE: To verify the combined improved synergistic effects of GSL and choline on learning and memory disorders in rats. DESIGN: Control observation. SETTING: Taishan Medical College. MATERIALS: A total of 150 male Kunming mice weighing (20±2) g and 40 healthy male Wistar rats weighing (220±20) g were provided by the Experimental Animal Department of Jilin University. Animal experimentation received confirmed consent from the local ethic committee. GSL was provided by the Department of Chemistry,Norman Bethune Medical University,and choline was provided by the Third Experiment Factory,Shanghai. METHODS: This study was performed at the Life Science Institute,Taishan Medical College from October 2006 to February 2007. ① Scopolamine-induced learning and memory disorders in rats: Forty rats were randomly divided into control group,model group,combination group (400 mg/kg GSL + 200 mg/kg choline),GSL (400 mg/kg) group,and choline (200 mg/kg) group,8 rats/group. Rats were perfused and administrated in the morning,once a day for 14 successive days. Rats in the control group and model group were perfused with 20 mL/kg distilled water and underwent Morris water maze spatial resolution test 1 hour after perfusion on the 10th,11th,and 12th days after administration. Rats also underwent passive step-down avoidance test 1 hour after reperfusion on the 13th and 14th days after administration. Thirty minutes prior to experimentation,rats in the remaining three groups were intraperitoneally (i.p) injected with 2 mg/kg scopolamine,and rats in the control group were i.p. injected with 2 mL/kg saline. ② Scopolamine-induced learning disorder and memory acquired disorder in mice: Fifty mice were randomly divided into control group,model group,combination group (400 mg/kg GSL +200 mg/kg choline),GSL (400 mg/kg) group,and choline (200 mg/kg) group,with 10 mice/group. Mice were perfused and administrated in the morning,once a day for 9 successive days. Mice in the control group and model group were perfused with 20 mL/kg distilled water and underwent passive step down avoidance test 1 hour after reperfusion on the 8th and 9th day after administration. Twenty minutes prior to training,mice in the remaining three groups were i.p. injected with 2 mg/kg scopolamine,and mice in the control group were i.p. injected with 10 mL/kg saline. ③ Sodium nitrite-induced memory consolidation disorder in mice: Grouping,administration,and testing were the same as mentioned above. After training,mice in the remaining three groups were immediately subcutaneously injected with 120 mg/kg sodium nitrite,and mice in the control group were subcutaneously injected with 20 mL/kg saline. ④ Ethanol-induced memory reconsolidation disorder in mice: Grouping,administration,and testing were the same as mentioned above. At 24 hours after training and 20 minutes before retraining,mice in the remaining four groups were perfused with 10 mL/kg ethanol (0.3 volume fraction),and mice in the control group were perfused with 10 mL/kg saline. MAIN OUTCOME MEASURES: Synergistic effects of GSL and choline on learning and memory deficits induced by scopolamine,sodium nitrite,and ethanol in experimental animals. RESULTS: All 40 rats and 150 mice were included in the final analysis. ① Synergistic effects of GSL and choline on learning and memory disorders induced by scopolamine in rats: During passive step-down avoidance and Morris water maze spatial resolution tests,the number of error responses and length of maze training in the model group were significantly greater than in the control group (P < 0.01); while the number of error responses and length of maze training in the combination group were significantly less than in the model group,GSL group,and choline group (P < 0.05-0.01). The Q value was > 1 after combining administration,which suggests that the combination of GSL and choline had synergistic effects. ② Synergistic effects of GSL and choline on learning disorder and memory-acquired disorder induced by scopolamine in mice: During passive step-down avoidance test,the number of error responses in the model group were significantly greater than in the control group (P < 0.01); while the number of error responses in the combination group were significantly less than in the model group,GSL group,and choline group (P < 0.05-0.01). The Q value was > 1 after combining administration,which suggests GSL and choline had synergistic effects. ③ Synergistic effects of GSL and choline on memory sodium nitrate-induced consolidation disorder in mice: During passive step down avoidance test,the number of error responses in the model group were significantly less than in the control group (P < 0.01); while the number of error responses in the combination group were significantly less than in the model group,GSL group,and choline group (P < 0.05-0.01). The Q value was > 1 after combined administration,which suggests GSL and choline had synergistic effects. ④ Synergistic effects of GSL and choline on ethanol-induced memory reconsolidation disorder in mice: During passive step down avoidance test,the number of error responses in the model group were significantly greater than in the control group (P < 0.01); while the number of error responses in the combination group were significantly less than in the model group,GSL group,and choline group (P < 0.05-0.01). The Q value was > 1 after combined administration,which suggests GSL and choline had synergistic effects. CONCLUSION: GSL and choline have synergistic effects on learning and memory functions.Xiaomin Zhao Hongxia GU Qing Li Xianglin Xie Zuoli Xia Hongxin Cai Ling Zhang Dawei Li Xinnong Wang 2008Neural Regeneration Research2008,3,2:3
13Overview of the Solar Polar Orbit Telescope Project for Space Weather Mission显示文摘The Solar Polar ORbit Telescope(SPORT) project for space weather mission has been under intensive scientific and engineering background studies since it was incorporated into the Chinese Space Science Strategic Pioneer Project in 2011.SPORT is designed to carry a suite of remote-sensing and in-situ instruments to observe Coronal Mass Ejections(CMEs),energetic particles,solar high-latitude magnetism,and the fast solar wind from a polar orbit around the Sun.The first extended view of the polar regions of the Sun and the ecliptic enabled by SPORT will provide a unique opportunity to study CME propagation through the inner heliosphere,and the solar high-latitude magnetism giving rise to eruptions and the fast solar wind.Coordinated observations between SPORT and other spaceborne/ground-based facilities within the International Living With a Star(ILWS) framework can significantly enhance scientific output.SPORT is now competing for official selection and implementation during China's 13 th Five-Year Plan period of 2016-2020.XIONG Ming LIU Ying LIU Hao LI Baoquan ZHENG Jianhua ZHANG Cheng XIA Lidong ZHANG Hongxin RAO Wei CHEN Changya SUN Weiying WU Xia DENG Yuanyong HE Han JIANG Bo WANG Yuming WANG Chuanbing SHEN Chenglong ZHANG Haiying ZHANG Shenyi YANG Xuan SANG Peng WU Ji 2016空间科学学报2016,36,3:3
14Is male condition corrected with song features in Dusky Warblers(Phylloscopus fuscatus)显示文摘Background: Birdsong is an important form of communication that plays an important role in territorial defense and mate attraction by conveying valuable information. While body-size and song frequency are often negatively correlated among species, this relationship is only found in a few songbirds. Previous studies on the Dusky Warbler (Phylloscopus fuscatus) found that there was a positive correlation between tarsus length and peak frequency. And heavier male Dusky Warblers possess better territories and obtain more opportunities for mating;body condition may be related to reproduction of birds, so females may choose heavier mates or better body condition based on the singing characteristics of males. Methods: We recorded spontaneous song and measured morphology of 33 male Dusky Warblers in Saihanba Forest Farm area between July 5 and August 10, 2015. We chose body weight as an indicator of body size and defined body condition as residuals from a linear regression between body weight and tarsus length. Frist, we used Pearson correlation to analyze whether date and time of day were correlated with weight, and then we used linear regression to analyze whether sound features could indicate the body weight and body condition. We call body weight and body condition the male condition. Results: We found no effect of date and time of day on weight, and we showed a correlation between the male condition and song features in the small songbird, Dusky Warbler. Maximum trill quality and maximum peak frequency of songs were negatively related to male condition;the mean number of syllables of songs and maximum high frequency of songs were positively correlated with body weight and body condition. Conclusions: In the small songbird, Dusky Warbler, four song parameters, including maximum trill quality, mean number of syllables of songs, maximum peak frequency of songs, maximum high frequency of songs, significantly predicted male condition change of which the most important song characteristic for male condition was maximum trill quality. This study suggested that the extreme song features were more constrained by male condition than mean sound characteristics.Jiaojiao Wang Jianping Liu Zhenqun Zhang Hongxin Ren Lijie Gao Jianhua Hou 2019Avian Research2019,10,2:3
15Efficient,high-resolution topology optimization method based on convolutional neural networks显示文摘Topology optimization is a pioneer design method that can provide various candidates with high mechanical properties.However,high resolution is desired for optimum structures,but it normally leads to a computationally intractable puzzle,especially for the solid isotropic material with penalization(SIMP)method.In this study,an efficient,high-resolution topology optimization method is developed based on the super-resolution convolutional neural network(SRCNN)technique in the framework of SIMP.SRCNN involves four processes,namely,refinement,path extraction and representation,nonlinear mapping,and image reconstruction.High computational efficiency is achieved with a pooling strategy that can balance the number of finite element analyses and the output mesh in the optimization process.A combined treatment method that uses 2D SRCNN is built as another speed-up strategy to reduce the high computational cost and memory requirements for 3D topology optimization problems.Typical examples show that the high-resolution topology optimization method using SRCNN demonstrates excellent applicability and high efficiency when used for 2D and 3D problems with arbitrary boundary conditions,any design domain shape,and varied load.Liang XUE Jie LIU Guilin WEN Hongxin WANG 2021Frontiers of Mechanical Engineering2021,16,1:3
16Adriamycin Thermotherapy through the Hepatic Artery Using VX2 Carcinoma in Rabbit Liver as a Model显示文摘OBJECTIVE It has been reported that heating can enhance sensitivity of rabbit VX2 cells to adriamycin and increase the intracellular concentration of adriamycin. This study was designed to evaluate the anti-tumor effect of interventional hyperthermia and interventional thermochemotherapy on VX2 carcinoma in rabbit liver. METHODS VX2 carcinoma cells were surgically implanted into the right liver lobe of 60 male New Zealand white rabbits, which were randomly divided into 4 groups (15 per group). The 4 groups (designated as 1, 2, 3, 4 respectively) were injected with 10 ml of the following via the hepatic artery: physiological saline (37℃); adriamycin (37℃); physiological saline (60℃); adriamycin (60℃). One week later, the tumor volume, serum level of aspartate transaminase (AST) and the survival of the rabbits bearing VX2 were observed and compared among the different treated groups. RESULTS The tumor growth rate in group 4 (ADM 60℃) (0.53±0.21)% was significantly lower than that in group 1 (3.48±1.17)%, in group 2 (1.09±0.26)% and group 3 (3.32±1.28)% (P<0.05, P<0.05, P<0.01, respectively). The days of survival days for group 4 (87.0±2.0) were significantly more than that in group 1 (40.0±3.0). Group 4 showed a significantly higher increase in serum AST compared to group 1 (P<0.05), but without significant differences compared to the other groups (P>0.05). CONCLUSION Adriamycin treatment at 60℃ significantly deceased the tumor growth, prolonged the survival period and resulted in reversible liver damage.Hongxin Zhang Wei Cao Zhimin Wang Weiping Guo Daihui Ni Wenxian Li Chen Lan Heng Wang 2006Chinese Journal of Clinical Oncology2006,3,2:3
17A novel cancer vaccine with the ability to simultaneously produce anti-PD-1 antibody and GM-CSF in cancer cells and enhance Th1-biased antitumor immunity显示文摘Tumor escape from immune-mediated destruction has been associated with immunosuppressive mechanisms that inhibit T-cell activation.A promising strategy for cancer immunotherapy is to disrupt key pathways regulating immune tolerance,such as program death-1(PD-1/PD-L1)pathway in the tumor environment.However,the determinants of response to anti-PD-1 monoclonal antibodies(mAbs)treatment remain incompletely understood.In murine models,PD-1 blockade alone fails to induce effective immune responses to poorly immunogenic tumors,but is successful when combined with additional interventions,such as cancer vaccines.Novel cancer vaccines combined with antibody may offer promising control of cancer development and progression.In this investigation,we generated a novel tumor cell vaccine simultaneously expressing anti-PD-1 mAbs and granulocyte-macrophage colony stimulating factor(GM-CSF)in CT26 colon cancer and B16-F10 melanoma.The antitumor effect of the vaccine was verified by therapeutic and adoptive animal experiments in vivo.The antitumor mechanism was analyzed using Flow cytometry,Elispot and in vivo intervention approaches.The results showed that tumor cell vaccine secreting PD-1 neutralizing antibodies and GM-CSF induced remarkable antitumor immune effects and prolonged the survival of tumor-bearing animals compared with animals treated with either PD-1 mAbs or GM-CSF alone.Antitumor effects and prolonged survival correlated with strong antigen-specific T-cell responses by analyzing CD11c^(+)CD86^(+)DC,CD11b^(+)F4/80^(+)MΦcells,increased ratio of Teff/Treg in the tumor microenvironment,and higher secretion levels of Th1 proinflammatory cytokines in serum.Furthermore,the results of ELISPOT and in vivo blocking strategies further confirmed that the antitumor immune response is acquired by CD4 and CD8 T immune responses,primarily dependent on CD4 Th1 immune response,not NK innate immune response.The combination of PD-1 blockade with GM-CSF secretion potency creates a novel tumor cell vaccine immunotherapy,affording significantly improved antitumor responses by releasing the state of immunosuppressive microenvironment and augmenting the tumor-reactive T-cell responses.Hongwei Tian Gang Shi Qin Wang Yiming Li Qianmei Yang Chunlei Li Guoyou Yang Min Wu Qian Xie Shuang Zhang Yang Yang Rong Xiang Dechao Yu Yuquan Wei Hongxin Deng 2016Signal Transduction and Targeted Therapy2016,1,1:3
18Two Ultraviolet Radiation Datasets that Cover China显示文摘Ultraviolet(UV) radiation has significant effects on ecosystems, environments, and human health, as well as atmospheric processes and climate change. Two ultraviolet radiation datasets are described in this paper. One contains hourly observations of UV radiation measured at 40 Chinese Ecosystem Research Network stations from 2005 to 2015. CUV3 broadband radiometers were used to observe the UV radiation, with an accuracy of 5%, which meets the World Meteorology Organization's measurement standards. The extremum method was used to control the quality of the measured datasets. The other dataset contains daily cumulative UV radiation estimates that were calculated using an all-sky estimation model combined with a hybrid model. The reconstructed daily UV radiation data span from 1961 to 2014. The mean absolute bias error and root-mean-square error are smaller than 30% at most stations, and most of the mean bias error values are negative, which indicates underestimation of the UV radiation intensity. These datasets can improve our basic knowledge of the spatial and temporal variations in UV radiation. Additionally, these datasets can be used in studies of potential ozone formation and atmospheric oxidation, as well as simulations of ecological processes.Hui LIU Bo HU Yuesi WANG Guangren LIU Liqin TANG Dongsheng JI Yongfei BAI Weikai BAO Xin CHEN Yunming CHEN Weixin DING Xiaozeng HAN Fei HE Hui HUANG Zhenying HUANG Xinrong LI Yan LI Wenzhao LIU Luxiang LIN Zhu OUYANG Boqiang QIN Weijun SHEN Yanjun SHEN Hongxin SU Changchun SONG Bo SUN Song SUN Anzhi WANG Genxu WANG Huimin WANG Silong WANG Youshao WANG Wenxue WEI Ping XIE Zongqiang XIE Xiaoyuan YAN Fanjiang ZENG Fawei ZHANG Yangjian ZHANG Yiping ZHANG Chengyi ZHAO Wenzhi ZHAO Xueyong ZHAO Guoyi ZHOU Bo ZHU 2017Advances in Atmospheric Sciences2017,34,7:2
19Ionic liquid-based ultrasonic/microwave-assisted extraction combined with UPLC for the determination of anthraquinones in rhubarb显示文摘LU Chunxia WANG Hongxin L(U) Wengpin 2011Chromatographia2011,74,1:1
20Maximum Inner Product Method for Extracting the Path-Loss Parameters in Primary Transformer Substations显示文摘In order to deploy short-range wireless communication devices in the primary transformer substation, a Maximum Inner Product(MIP) Method is proposed to extract the path-loss parameters in 110 kV and 220 kV primary transformer substations. The maximum inner product of the testing data is calculated to find out the loss index n and the standard deviation σ, and then the pathloss models can be set up. By comparing the MIP with Minimum Mean Square estimation(MMSE) and Cumulative Sum(CUSUM), MIP can match the measured values best. In order to apply the MIP path-loss model, under the initial signal to noise ratio(SNR) at 5 dB and 10 dB, a ZigBee simulation system is constructed to validate the situation that bit error rate(BER) varies with distance. And the ZigBee devices with 5 units are tested in a 220 kV primary transformer substation. The result of the test proves that the path-loss model is accurate.Qiang Li Hongxin Zhang Tianyi Zheng Xueli Wang Yinghua Lv 2019China Communications2019,16,4:1
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