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| 1 | Th e role of ferroptosis in ionizing radiation-induced cell death and tumor suppression显示文摘Ferroptosis,a form of regulated cell death caused by lipid peroxidation,was recently identified as a natural tumor suppression mechanism.Here,we show that ionizing radiation(IR)induces ferroptosis in cancer cells.Mechanistically,IR induces not only reactive oxygen species(ROS)but also the expression of ACSL4,a lipid metabolism enzyme required for ferroptosis,resulting in elevated lipid peroxidation and ferroptosis.ACSL4 ablation largely abolishes IR-induced ferroptosis and promotes radioresistance.IR also induces the expression of ferroptosis inhibitors,including SLC7A11 and GPX4;as an adaptive response.IR-or KEAP1 deficiencyinduced SLC7A11 expression promotes radioresistance through inhibiting ferroptosis.Inactivating SLC7A11 or GPX4 with ferroptosis inducers(FINs)sensitizes radioresistant cancer cells and xenograft tumors to IR.Furthermore,radiotherapy induces ferroptosis in cancer patients,and increased ferroptosis correlates with better response and longer survival to radiotherapy in cancer patients.Our study reveals a previously unrecognized link between IR and ferroptosis and indicates that further exploration of the combination of radiotherapy and FINs in cancer treatment is warranted. | Guang Lei Yilei Zhang Pranavi Koppula Xiaoguang Liu Jie Zhang Steven HLin Jaffer AAjani Qin Xiao Zhongxing Liao Hui Wang Boyi Gan | 2020 | Cell Research2020，30，2： | 88 |
| 2 | Characteristics of strong earthquake evolution around the eastern boundary faults of the Sichuan-Yunnan rhombic block显示文摘Based on the existing materials of fault segmentation,characteristic earthquakes,and their empirical relationships,we calculated the parameters of the fault segments,such as length,width,magnitudes of characteristic earthquakes,etc.Constrained by GPS velocity field,the slip rates of these fault segments in depth were inversed using the 3-D half-space elastic dislocation model.As not all of the recurrence periods and co-seismic displacements of characteristic earthquakes are known,we selected the fault segments with these two parameters known and calculated the accumulation rate of average co-seismic displacement,which shows the faults' slip rate in seismogenic layer.Then,the slip rate in depth was compared with that in seismogenic layer,the relationship between them was obtained,and this relationship was used to get the recurrence periods and co-seismic displacements of all fault segments.After the studies above,we calculated the co-seismic deformation field of all the earthquakes larger than M s 6.8 from AD 1700 one by one and inversed the potential displacement in the co-seismic deformation field.Then,we divided the potential displacement by the slip rate from GPS inversion to get the influences of these fault segments,added the influences into the elapsed time of the characteristic earthquakes,and obtained the earthquake hazard degree of all the segments we studied in the form of the ratio of elapsed time to recurrence period;so,we name the ratio as the Impending Earthquake Risk (IER).Historical earthquake cases show that the fault segment is in safety when the IER is less than 1 but in danger after the IER becomes larger than 1.In 2009,the IER is larger than 1 on the following segments,1.35 on the Tagong segment of Xianshuihe fault,1 on the Menggu-Dongchuan segment,1.04 on the Dongchuan-Xundian segment,and 1.09 on the Yiliang-Chengjiang segment of Xiaojiang fault. | CHENG Jia LIU Jie GAN WeiJun YU HuaiZhong LI Gang | 2011 | Science China Earth Sciences2011，54，11： | 15 |
| 3 | Genotypic Characterization of Methicillin-resistant Staphylococcus aureus Isolated from Pigs and Retail Foods in China显示文摘Objective To investigate the genotypic diversity of Methicillin-resistant Staphylococcus aureus(MRSA) isolated from pigs and retail foods from different geographical areas in China and further to study the routes and rates of transmission of this pathogen from animals to food. Methods Seventy-one MRSA isolates were obtained from pigs and retail foods and then characterized by multi-locus sequencing typing(MLST), spa typing, multiple-locus variable number of tandem repeat analysis(MLVA), pulsed-field gel electrophoresis(PFGE), and antimicrobial susceptibility testing. Results All isolated MRSA exhibited multi-drug resistance(MDR). Greater diversity was found in food-associated MRSA(7 STs, 8 spa types, and 10 MLVA patterns) compared to pig-associated MRSA(3 STs, 1 spa type, and 6 MLVA patterns). PFGE patterns were more diverse for pig-associated MRSA than those of food-associated isolates(40 vs. 11 pulse types). Among the pig-associated isolates, CC9-ST9-t899-MC2236 was the most prevalent clone(96.4%), and CC9-ST9-t437-MC621(20.0%) was the predominant clone among the food-associated isolates. The CC9-ST9 isolates showed significantly higher antimicrobial resistance than other clones. Interestingly, CC398-ST398-t034 clone was identified from both pig-and food-associated isolates. Of note, some community-and hospital-associated MRSA strains(t030, t172, t1244, and t4549) were also identified as food-associated isolates. Conclusion CC9-ST9-t899-MC2236-MDR was the most predominant clone in pigs, but significant genetic diversity was observed in food-associated MRSA. Our results demonstrate the great need for improved surveillance of MRSA in livestock and food and effective prevention strategies to limit MDR-MRSA infections in China. | WANG Wei LIU Feng ZULQARNAIN Baloch ZHANG Cun Shan MA Ke PENG Zi Xin YAN Shao Fei HU Yu Jie GAN Xin DONG Yin Ping BAI Yao LI Feng Qin YAN Xiao Mei MA Ai Guo XU Jin | 2017 | Biomedical and Environmental Sciences2017，30，8： | 13 |
| 4 | Formation control of multiple Euler-Lagrange systems via null-space-based behavioral control显示文摘This paper addresses the formation control problem of multiple Euler-Lagrange systems with model uncertainties in the environment containing obstacles. Utilizing the null-space-based(NSB) behavioral control architecture, the proposed problem can be decomposed into elementary missions(behaviors) with different priorities and implemented by each individual system. A class of novel coordination control algorithms is constructed and utilized to achieve accurate formation task while avoiding obstacles and guaranteeing the model uncertainty rejection objective. By using sliding mode control and Lyapunov theory, the formation performance in closed-loop multi-agent systems is proven achievable if the state-dependent gain of the obstacle avoidance mission is appropriately designed. Finally, simulation examples demonstrate the effectiveness of the algorithms. | Jie CHEN Minggang GAN Jie HUANG Lihua DOU Hao FANG | 2016 | Science China(Information Sciences)2016，59，1： | 12 |
| 5 | Circulating miR-125a but not miR-125b is decreased in active disease status and negatively correlates with disease severity as well as inflammatory cytokines in patients with Crohn's disease显示文摘AIM To determine the association of circulating mi R-125 a/b expression with the risk and disease severity of Crohn's disease(CD), and with inflammatory cytokines.METHODS Plasma samples were collected from patients with active CD(A-CD), or CD in remission(R-CD) and from healthy controls(HCs). The levels of the inflammatory cytokines interleukin-17(IL-17), tumour necrosis factor-α(TNF-α), and interferon-γ(IFN-γ) were measured by enzyme-linked immunosorbent assay. The expression of mi R-125 a/b was assessed by quantitative polymerase chain reaction(q PCR).RESULTS Twenty-nine A-CD patients, 37 R-CD patients, and 37 HCs were included in the study. Plasma mi R-125 a expression was decreased in A-CD patients comparedwith that in R-CD patients(P < 0.001) and HCs(P < 0.001). mi R-125 a expression levels enabled the differentiation of A-CD from R-CD patients [area under curve(AUC) = 0.854] and from HCs(AUC = 0.780), whereas mi R-125 b expression did not. mi R-125 a was negatively correlated with C-reaction protein(CRP)(P = 0.017), erythrocyte sedimentation rate(ESR)(P = 0.026), Crohn's disease activity index(CDAI)(P = 0.003), IL-17(P = 0.015), and TNF-α(P = 0.004) in A-CD patients. Furthermore, mi R-125 a was negatively associated with CRP(P = 0.038) and CDAI(P = 0.021) in R-CD patients. Regarding mi R-125 b, no association with CRP, CDAI, IL-17, TNF-α, or IFN-γ was found in A-CD or in R-CD patients. mi R-125 a levels gradually increased in A-CD patients who achieved clinical remission(P = 0.009) after 3-mo treatment, whereas they remained unchanged among patients who failed to achieve remission. No changes in mi R-125 b expression were detected in remission or non-remission patients after treatment. CONCLUSION Circulating mi R-125 a but not mi R-125 b is decreased in patients with active disease status and negatively correlates with disease severity and inflammatory cytokines in patients with CD. | Chen-Ming Sun Jie Wu Heng Zhang Gan Shi Zhi-Tao Chen | 2017 | World Journal of Gastroenterology2017，23，44： | 12 |
| 6 | Phosphorylcholine polymer nanocapsules prolong the circulation time and reduce the immunogenicity of therapeutic proteins显示文摘蛋白质治疗,治疗学的蛋白质在那里被交付对待混乱,为治疗疾病被认为最安全、很直接的途径。然而,它的应用被有效策略的少量高度为在他们的管理以后在 vivo 交付蛋白质和治疗学的蛋白质的快速的清理限制。这里,我们表明能显著地延长治疗学的蛋白质的发行量时间以及最小化他们的 immunogenicity 的新奇策略。这被与抵抗蛋白质吸附的 crosslinked phosphorylcholine 聚合物的薄层包含单个蛋白质分子完成。通过广泛的细胞的研究,我们证明 crosslinked phosphorylcholine 聚合物壳有效地阻止包含的蛋白质是由巨噬细胞的 phagocytosed,它在 vivo 在 nanoparticles 的清理起一个必要作用。而且,聚合物壳阻止包含的蛋白质被有免疫力的房间识别。作为结果,对治疗学的蛋白质的有免疫力的回答有效地被压制。这个工作描述一个可行方法延长循环时间并且减少治疗学的蛋白质的 immunogenicity,它可以在多样的疾病的治疗支持新奇蛋白质治疗的发展和申请。 | Sheng Liang Yang Liu Xin Jin Gan Liu Jing Wen Linlin Zhang Jie Li Xubo Yuan Irvin S.Y. Chen Wei Chen Hui Wang Linqi Shi Xinyuan Zhu Yunfeng Lu | 2016 | Nano Research2016，9，4： | 11 |
| 7 | Near-field surface movement during the Wenchuan M_s8.0 earthquake measured by high-rate GPS显示文摘Based on high-rate (1 Hz) GPS data from the Sichuan GPS Continuous Observation Network on the footwall of the Longmenshan Fault, we have characterized the near-field surface movement process during the 5.12 Wenchuan Earthquake. Results show that the maximum deformation near the fault is larger than the deformation set. Stations on the northern segment of the fault moved towards the epicenter first, and then turned toward the vertical orientation of the fault. Deformation of stations on the southern segment is smaller and recovered. The initial motion at all of the stations was downward followed by periodic up and down movements. Comparing the displacement from high-rate GPS and accelerograph data, we can see that they are consistent prior to the arrival of the principal shock, but afterwards a 10 cm difference is found, even though they are synchronized and in phase. More work is yet to be done to explain this. This is the first time that actual the real near-field surface movements of an earth- quake of M >7.0 have been determined in china. These measurements are therefore of high value for studies of surface rupture processes and the analysis of seismic wave travels paths in this region. | YIN HaiTao ZHANG PeiZhen GAN WeiJun WANG Min LIAO Hua LI XiaoJun LI Jie XIAO GenRu | 2010 | Chinese Science Bulletin2010，55，23： | 11 |
| 8 | Protective effect of heme oxygenase-1 on Wistar rats with heart failure through the inhibition of inflammation and amelioration of intestinal micro- circulation显示文摘BackgroundMyocardial 梗塞(MI ) 多半贡献了心失败(HF ) 的增加的流行。由于减少的心脏的功能,内脏的血流动减少,引起在到肠的障碍的绒毛和损坏的局部缺血。heme oxygenase-1 (HO-1 ) 的正式就职能阻止,或减少应力和发炎的效果。因此,效果和有 HF 的老鼠的肠上的 HO-1 它的机制是有通过左冠的动脉的结扎的心失败的 investigated.MethodsMale Wistar 老鼠与 < 的左室的喷射部分被识别;45% 通过 echocardiography 然后基于他们收到了的腹注射的类型划分了成各种各样的试验性的组[MI:盐;MI + 钴 protoporphyrin (CoPP ) :CoPP 答案;并且 MI + 听 mesoporphyrin IX 二氯化物(简单网络管理协议) :简单网络管理协议答案] 。没有冠的结扎,控制组由老鼠组成。Echocardiography 在结扎以后为一条基线和八个星期在结扎前被执行以便评估老鼠的心脏的功能。细菌的 translocation (BT ) 发生, mesenteric microcirculation,在静脉浆液的内毒素的数量, HO-1 的回肠层次,碳氧化物(公司) ,氮的氧化物(没有) , interleukin (IL )-10, 瘤坏死 factor-α(TNF-α) ,并且在收到 MI + CoPP 注射的 operation.ResultsThe 老鼠在心脏的功能展出了恢复以后,回肠形态学八个星期被决定,在形态学的 mesenteric microcirculation 和变化的改善,更低的 BT 发生,在浆液的减小并且肠阻塞没有并且 TNF-α与 MI 相比的在肠阻塞的 HO-1,公司,和 interleukin-10 (IL-10 ) 的层次,和举起层次组织(P <0.05 ) 。收到了 MI + 简单网络管理协议注射的老鼠展出了对 MI 反的结果(P <0.05 ) group.ConclusionsHO-1 由通过 CO 小径禁止 microcirculation 的发炎和改善与 HF 在老鼠的肠上施加了保护的效果。这保护的效果能从心脏的功能的恢复是独立的。 | Li ZHANG Zhuo-Kun GAN Li-Na HAN Hao WANG Jie BAI Guo-Juan TAN Xiao-Xia LI Ya-Ping XU Yu ZHOU Mei-Liang GONG Mo-Si LIN Xiao-Yang HAN | 2015 | Journal of Geriatric Cardiology2015，12，4： | 11 |
| 9 | Modeling of GPS Code and Carrier Tracking Error in Multipath显示文摘 | CHEN Jie CHENG Lan GAN Minggang | 2012 | Chinese Journal of Electronics2012，21，1： | 8 |
| 10 | Effects of recombinant human growth hormone on growth of human gastric carcinoma xenograft model in nude mice显示文摘瞄准:在人的胃的癌房间在活体内的生长上学习 recombinant 人生长激素(rhGH ) 的效果。方法:试验性的老鼠被划分成控制组, rhGH 组, oxaliplatin (L-OHP ) 组和 rhGH+L-OHP 组。有教养的人的胃的癌房间 BGC823 被接种进裸体老鼠的正确腋下,癌异种皮移植模型成功地被建立。异种皮移植肿瘤生长的禁止的率被测量肿瘤体积估计;增殖的房间的表示原子抗原(PCNA ) , Bax 和异种皮移植肿瘤的 Bcl-2 蛋白质用免疫被检测组织化学的 S-P 方法。结果:肿瘤生长禁止的率, PCNA 的积极表示率, Bax 和 Bcl-2 分别地在 rhGH+L-OHP 组是 49.3% , 58.2% , 65.2% 和 59.2% ;46.6% , 62.5% , 59.7% 和 64.7% 在 L-OHP 组织;5.0% , 82.7% , 23.2% 和 82.2% 在 rhGH 组织, 0, 77.8% , 23.5% 和 80.3% 在控制组织。在 rhGH+L-OHP 组之间有有效差量(或 L-OHP 组) 并且控制组或 rhGH 组(P <
0.05 ) ,而没有有效差量(P >
0.05 ) 在 L-OHP 之间,组和 rhGH+L-OHP 组织并且在 rhGH 之间组织并且控制组。结论:rhGH 不加速人的胃的癌症房间在活体内的增长。 | Dao-Ming Liang Jia-Yong Chen Yi Zhang Ping Gan Jie Lin An-Bao Chen | 2006 | World Journal of Gastroenterology2006，12，24： | 8 |
| 11 | A Fast Averaging Synchronization Algorithm for Clock Oscillators in Nonlinear Dynamical Network with Arbitrary Time-delays显示文摘 | CHEN Jie | 2010 | 自动化学报2010，36，6： | 7 |
| 12 | The Lyman-alpha Solar Telescope(LST) for the ASO-S mission——Ⅲ. data and potential diagnostics显示文摘The Lyman-alpha Solar Telescope(LST)is one of the three payloads onboard the Advanced Space-based Solar Observatory(ASO-S)mission.It aims at imaging the Sun from the disk center up to 2.5 R⊙targeting solar eruptions,particularly coronal mass ejections(CMEs),solar flares,prominences/filaments and related phenomena,as well as the fast and slow solar wind.The most prominent speciality of LST is the simultaneous observation of the solar atmosphere in both Lyαand white light(WL)with high temporospatial resolution both on the solar disk and the inner corona.New observations in the Lyαline together with traditional WL observations will provide us with many new insights into solar eruptions and solar wind.LST consists of a Solar Corona Imager(SCI)with a field of view(FOV)of 1.1–2.5 R⊙,a Solar Disk Imager(SDI)and a full-disk White-light Solar Telescope(WST)with an identical FOV up to 1.2 R⊙.SCI has a dual waveband in Lyα(121.6±10 nm)and in WL(700±40 nm),while SDI works in the Lyαwaveband of 121.6±7.5 nm and WST works in the violet narrow-band continuum of 360±2.0 nm.To produce high quality science data,careful ground and in-flight calibrations are required.We present our methods for different calibrations including dark field correction,flat field correction,radiometry,instrumental polarization and optical geometry.Based on the data calibration,definitions of the data levels and processing procedures for the defined levels from raw data are described.Plasma physical diagnostics offer key ingredients to understand ejecta and plasma flows in the inner corona,as well as different features on the solar disk including flares,filaments,etc.Therefore,we are making efforts to develop various tools to detect the different features observed by LST,and then to derive their physical parameters,for example,the electron density and temperature of CMEs,the outflow velocity of the solar wind,and the hydrogen density and mass flows of prominences.Coordinated observations and data analyses with the coronagraphs onboard Solar Orbiter,PROBA-3,and Aditya are also briefly discussed. | Li Feng Hui Li Bo Chen Ying Li Roberto Susino Yu Huang Lei Lu Bei-Li Ying Jing-Wei Li Jian-Chao Xue Yu-Tong Yang Jie Hong Jian-Ping Li Jie Zhao Wei-Qun Gan Yan Zhang | 2019 | Research in Astronomy and Astrophysics2019，19，11： | 7 |
| 13 | Highly Transparent and Colorless Polyimide Film with Low Dielectric Constant by Introducing Meta-substituted Structure and Trifluoromethyl Groups显示文摘An effective design strategy for preparing highly transparent polyimide film with low dielectric constant is presented.The key to the strategy is to simultaneously introduce meta-substituted structure and trifluoromethyl in polymer chains.By using this design strategy,a highly transparent polyimide film with low-k was synthesized from 3,5-diaminobenzotrifluoride(m-TFPDA)and 4,4'-(hexafluoroisopropylidene)diphthalic anhydride(6FDA)through a two-step method.The obtained m-TFPDA/6FDA(CPI)film(~30 pm)possesses high optical transparency(λ_(cutoff)=334 nm,T_(450nm)=85.26%,Haze=0.31)and is close to colorless(L^(*)=96.03,a^(*)=-0.34,b^(*)=2.12,yellow index=3.96).The intrinsic k and dielectric loss value of the film are 2.27 and 0.0013 at 10 kHz,respectively.More importantly,such low dielectric performance could remain stable up to 280℃,and the film shows a low moisture rate(~0.51%),which helps to maintain the low-k property stability in different humid environments.Meanwhile,the film also shows good thermal stability and mechanical properties,with a glass transition temperature(T_(g))of 296℃and the 5 wt%decomposition temperature(T_(d,s%))of 522℃under N_(2).The tensile strength and tensile modulus of the film are 85.1 MPa and 1.96 GPa,respectively.In addition,the film is soluble in common solvents,which allows simple solution processing and low-cost,continuous roll-to-roll processes.This design strategy is beneficial to improving the transparency,lightening yellow color,lowering the dielectric constant and meanwhile maintaining the comprehensive properties of polyimide films,which is mainly due to the introduced meta-substituted and trifluoromethyl structures effectively inhibiting the transfer of charge transfer complex(CTC)effects and increasing the free volume of film.This design strategy could also be extended to other high-performance polymer systems. | Hong-Tao Zuo Feng Gan Jie Dong Peng Zhang Xin Zhao Qing-Hua Zhang | 2021 | Chinese Journal of Polymer Science2021，39，4： | 6 |
| 14 | The Lyman-alpha Solar Telescope (LST) for the ASO-S mission——Ⅰ. Scientific objectives and overview显示文摘As one of the payloads for the Advanced Space-based Solar Observatory(ASO-S)mission,the Lyman-alpha(Lyα)Solar Telescope(LST)is aimed at imaging the Sun and the inner corona up to 2.5 R⊙(mean solar radius)in both the Lyα(121.6 nm)and visible wavebands with high temporo-spatial resolution,mainly targeting solar flares,coronal mass ejections(CMEs)and filaments/prominences.LST observations allow us to trace solar eruptive phenomena from the disk center to the inner corona,to study the relationships between eruptive prominences/filaments,solar flares and CMEs,to explore the dynamical processes and evolution of solar eruptions,to diagnose solar winds,and to derive physical parameters of the solar atmosphere.LST is actually an instrument suite,which consists of a Solar Disk Imager(SDI),a Solar Corona Imager(SCI),a White-light Solar Telescope(WST)and two Guide Telescopes(GTs).This is the first paper in a series of LST-related papers.In this paper,we introduce the scientific objectives,present an overview of the LST payload and describe the planned observations.The detailed design and data along with potential diagnostics are described in the second(Paper II)and third(Paper III)papers,respectively,appearing in this issue. | Hui Li Bo Chen Li Feng Ying Li Yu Huang Jing-Wei Li Lei Lu Jian-Chao Xue Bei-Li Ying Jie Zhao Yu-Tong Yang Wei-Qun Gan Cheng Fang Ke-Fei Song Hong Wang Quan-Feng Guo Ling-Ping He Bo Zhu Cheng Zhu Lei Deng Hai-Chao Bao Cai-Xia Cao Zhong-Guang Yang | 2019 | Research in Astronomy and Astrophysics2019，19，11： | 6 |
| 15 | In situ catalytic upgrading of heavy crude oil through low-temperature oxidation显示文摘The low-temperature catalytic oxidation of heavy crude oil(Xinjiang Oilfield,China) was studied using three types of catalysts including oil-soluble,watersoluble,and dispersed catalysts.According to primary screening,oil-soluble catalysts,copper naphthenate and manganese naphthenate,are more attractive,and were selected to further investigate their catalytic performance in in situ upgrading of heavy oil.The heavy oil compositions and molecular structures were characterized by column chromatography,elemental analysis,and Fourier transform infrared spectrometry before and after reaction.An Arrhenius kinetics model was introduced to calculate the rheological activation energy of heavy oil from the viscosity-temperature characteristics.Results show that the two oil-soluble catalysts can crack part of heavy components into light components,decrease the heteroatom content,and achieve the transition of reaction mode from oxygen addition to bond scission.The calculated rheological activation energy of heavy oil from the fitted Arrhenius model is consistent with physical properties of heavy oil(oil viscosity and contents of heavy fractions).It is found that the temperature,oil composition,and internal molecular structures are the main factors affecting its flow ability.Oil-soluble catalyst-assisted air injection or air huff-n-puff injection is a promising in situ catalytic upgrading method for improving heavy oil recovery. | Hu Jia Peng-Gang Liu Wan-Fen Pu Xian-Ping Ma Jie Zhang Lu Gan | 2016 | Petroleum Science2016，13，3： | 6 |
| 16 | An ion-imprinted polymer supported by attapulgite with a chitosan incorporated sol-gel process for selective separation of Ce(Ⅲ)显示文摘The surface ion-imprinting concept and chitosan incorporated sol-gel process were applied to the synthesis of a new attapulgitesupported polymer for selective separation of Ce(Ⅲ) from aqueous solution.The imprinting mechanism of prepared ion-imprinted polymer were discussed with the Characteristics of FT-IR and SEM.Results from the experiments of adsorption capacity and selectivity suggested that ion-imprinted polymer offered a fast kinetics for the adsorption of Ce(Ⅲ) under the optimum conditions. Its maximum adsorption capacity was 38.02 mg/g,and the selective recognition towards Ce(Ⅲ) was much higher than that of the non-imprinted polymer and attapulgite.The prepared functional polymer was shown to be promising for selective separation and enrichment of trace Ce(Ⅲ) in environmental samples. | Chun Xiang Li Jian Ming Pan Jie Gao Yong Sheng Yan Gan Qing Zhao | 2009 | Chinese Chemical Letters2009，20，8： | 6 |
| 17 | Design and preliminary experimental investigation of a 4K Stirling-type pulse tube cryocooler with precooling显示文摘A Stirling-type pulse tube cryocooler (PTC) with precooling was designed and manufactured to investigate its performance at 4 K. Numerical simulation was carried out based on the well-known regenerator model REGEN with an emphasis on the performance of a 4 K stage regenerator of the Stirling-type PTC as influenced by the warm end temperature, pressure ratio, frequency and average pressure with helium-4 and helium-3 as the working fluid respectively. This study demonstrates that the use of a cold inertance tube can significantly improve the efficiency of a 4 K Stirling-type PTC. A preliminary experimental investigation was carried out with helium-4 as the working fluid and a refrigeration temperature of 4.23 K was achieved. The experimental results show that the operating frequency has a significant influence on the performance of the Stirling-type PTC and a relatively low average pressure is favorable for decreasing the loss associated with the real gas effects of a 4 K Stirling-type PTC. | Zhi-hua GAN Zhuo-pei LI Jie CHEN Li DAI Li-min QIU | 2009 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2009，10，9： | 6 |
| 18 | Data reduction and calibration of the FMG onboard ASO-S显示文摘The Full-disk vector Magneto Graph(FMG)instrument will carry out polarization observations at one wavelength position of the Fe I 5324.179?spectral line.This paper describes how to choose this single wavelength position,the relevant data-processing and the magnetic field calibrations based on the measured polarization signals at one single wavelength position.It is found that solar radial Doppler velocity,which can cause the spectral line to shift,is a disadvantageous factor for the linear calibration at one wavelength position.Observations at two symmetric wavelength positions may significantly reduce the wavelength shift effect(~75%),but simulations show that such polarization signals located at the solar limbs(e.g.,beyond the longitude range of±30°)are not free from the effect completely.In future work,we plan to apply machine learning techniques to calibrate vector magnetic fields,or employ full Stokes parameter profile inversion techniques to obtain accurate vector magnetic fields,in order to complement the linear calibration at the single wavelength position. | Jiang-Tao Su Xian-Yong Bai Jie Chen Jing-Jing Guo Suo Liu Xiao-Fan Wang Hai-Qing Xu Xiao Yang Yong-Liang Song Yuan-Yong Deng Kai-Fan Ji Lei Deng Yu Huang Hui Li Wei-Qun Gan | 2019 | Research in Astronomy and Astrophysics2019，19，11： | 6 |
| 19 | c-Jun N-terminal kinase 3 expression in the retina of ocular hypertension mice:a possible target to reduce ganglion cell apoptosis显示文摘Glaucoma, a type of optic neuropathy, is characterized by the loss of retinal ganglion cells. It remains controversial whether c-Jun N-terminal kinase(JNK) participates in the apoptosis of retinal ganglion cells in glaucoma. This study sought to explore a possible mechanism of action of JNK signaling pathway in glaucoma-induced retinal optic nerve damage. We established a mouse model of chronic ocular hypertension by reducing the aqueous humor followed by photocoagulation using the laser ignition method. Results showed significant pathological changes in the ocular tissues after the injury. Apoptosis of retinal ganglion cells increased with increased intraocular pressure, as did JNK3 m RNA expression in the retina. These data indicated that the increased expression of JNK3 m RNA was strongly associated with the increase in intraocular pressure in the retina, and correlated positively with the apoptosis of retinal ganglion cells. | Yue He Jie Chen Shu-guang Zhang Yuan-sheng Yuan Yan Li Hong-bin Lv Jin-hua Gan | 2015 | Neural Regeneration Research2015，10，3： | 6 |
| 20 | Acoustic emission generated during the gas sorption-desorption process in coal显示文摘An experimental system for monitoring the acoustic signals generated in coal during gas sorption and/or desorption was designed and the acoustic signals were observed under different gas pressures. The experimental results show that signals generated by the coal during gas adsorption are attenuated over time. Also, the signals are not continuous but are impulsive. The intensity of the signals generated during gas desorption is far smaller than that observed during adsorption. The signal seen during desorption remains essentially stable. Cycles of sorption and desorption cause acoustic emission signals that exhibit a memory effect, which depends upon the maximum gas pressure the sample was exposed to in earlier cycles. Lower pressures in subsequent cycles, compared to the maximum adsorption pressure in previous cycles, cause both the energy and impulse frequency to be lower than previously. On the contrary, a gas adsorption pressure that exceeds the maximum pressure seen by the sample during earlier cycles causes both the energy and impulse frequency to be high. | Ma Yankun Wang Enyuan Xiao Dong Li Zhonghui Liu Jie Gan Lijia | 2012 | International Journal of Mining Science and Technology2012，22，3： | 5 |
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