|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Early Oligocene anatexis in the Yardoi gneiss dome,southern Tibet and geological implications显示文摘The Yardoi gneiss dome is located to the easternmost of the North Himalayan Gneiss Dome (NHGD),southern Tibet. It consists of metapelite,garnet amphibolite,granite and leucogranite,and is a key subject to constrain the formation and tectonic evolution of NHGD. SHRIMP zircon U/Pb data on the leucogranite yield an age of 35.3±1.1 Ma,which is substantially older than that of the similar leu-cogranites to the west. Sr and Nd isotope systematics indicate that this leucogranite was derived from partial melting of the mixed garnet amphibolite and metapelite. Our data suggest that (1) during the early stage of Himalayan magmatism,amphibolite dehydration melting overwhelmed that of the metapelite; and (2) such a melting at middle-lower crust might be a major factor that initiated the movement along the Southern Tibetan Detachment System (STDS). | ZENG LingSen LIU Jing GAO LiE XIE KeJia WEN Li | 2009 | Chinese Science Bulletin2009，54，1： | 61 |
| 2 | The Qitai radio telescope显示文摘This study presents a general outline of the Qitai radio telescope(QTT)project.Qitai,the site of the telescope,is a county of Xinjiang Uygur Autonomous Region of China,located in the east Tianshan Mountains at an elevation of about 1800 m.The QTT is a fully steerable,Gregorian-type telescope with a standard parabolic main reflector of 110 m diameter.The QTT has adopted an umbrella support,homology-symmetric lightweight design.The main reflector is active so that the deformation caused by gravity can be corrected.The structural design aims to ultimately allow high-sensitivity observations from 150 MHz up to115 GHz.To satisfy the requirements for early scientific goals,the QTTwill be equipped with ultra-wideband receivers and large field-of-view multi-beam receivers.A multi-function signal-processing system based on RFSo C and GPU processor chips will be developed.These will enable the QTT to operate in pulsar,spectral line,continuum and Very Long Baseline Interferometer(VLBI)observing modes.Electromagnetic compatibility(EMC)and radio frequency interference(RFI)control techniques are adopted throughout the system design.The QTT will form a world-class observational platform for the detection of lowfrequency(nano Hertz)gravitational waves through pulsar timing array(PTA)techniques,pulsar surveys,the discovery of binary black-hole systems,and exploring dark matter and the origin of life in the universe.The QTT will also play an important role in improving the Chinese and international VLBI networks,allowing high-sensitivity and high-resolution observations of the nuclei of distant galaxies and gravitational lensing systems.Deep astrometric observations will also contribute to improving the accuracy of the celestial reference frame.Potentially,the QTT will be able to support future space activities such as planetary exploration in the solar system and to contribute to the search for extraterrestrial intelligence. | Na Wang Qian Xu Jun Ma Zhiyong Liu Qi Liu Hailong Zhang Xin Pei Maozheng Chen Richard N.Manchester Kejia Lee Xingwu Zheng Hans J.Kärcher Wulin Zhao Hongwei Li Dongwei Li Martin Süss Matthias Reichert Zhongyi Zhu Congsi Wang Mingshuai Li Rui Li Ning Li Guljaina Kazezkhan Wenming Yan Gang Wu Lang Cui Ming Zhang Haitao Li | 2023 | Science China(Physics,Mechanics & Astronomy)2023，66，8： | 14 |
| 3 | Microwave transmission properties of metamaterials with double sets of square holes显示文摘The transmission property of microwave through a kind of metamaterial is investigated experimentally.Such metamaterials are fabricated with a structure of double sets of square holes:subwavelength ones,and small ones whose sizes and spacing are smaller at least one order of magnitude than those of the subwavelength holes.The experimental results show that the peak power of the measured transmission spectra is dependent on the structure parameters of the small holes.The physical origin to create this phenomenon is that the designer surface plasmons sustained by the small holes affect on the transmission property of the microwave passing through the subwavelength holes.The results are promising for proposing some techniques for optoelectronic devices in terahertz and microwave regime. | ZOU Si LIU JinSong WANG KeJia | 2012 | Chinese Science Bulletin2012，57，28： | 8 |
| 4 | SENP3 regulates the global protein turnover and the Spl level via antagonizing SUM02/ 3-targeted ubiquitination and degradation显示文摘 | Ming Wang Jing Sang Yanhua Ren Kejia Liu Xinyi Liu Jian Zhang Haolu Wang Jian Wang Amir Orian Jie Yang Jing Yi | 2016 | Protein & Cell2016，7，1： | 5 |
| 5 | Polarization-dependent difference of the power spectra from two-dimensional random media with different shapes显示文摘Polarization-dependent difference of the power spectra from a set of two-dimensional (2D) passive random media is investigated by simultaneously solving Maxwell’s equations for both transverse magnetic (TM) and transverse electric (TE) fields. The random media have the same random constitution but different shapes. Results show that both two polarized states are morphology dependent, and the variety of the shapes has more influence on the selection of TM polarized modes than that of TE polarized modes. Such polarization-dependent difference of morphology property presents a new modeselecting technique for random lasers. | LIU Hai LIU JinSong LU JianTao WANG KeJia | 2009 | Chinese Science Bulletin2009，54，18： | 3 |
| 6 | The Gravitational-wave physics Ⅱ: Progress显示文摘It has been a half-decade since the first direct detection of gravitational waves, which signifies the coming of the era of the gravitational-wave astronomy and gravitational-wave cosmology. The increasing number of the detected gravitational-wave events has revealed the promising capability of constraining various aspects of cosmology, astronomy, and gravity. Due to the limited space in this review article, we will briefly summarize the recent progress over the past five years, but with a special focus on some of our own work for the Key Project 'Physics associated with the gravitational waves' supported by the National Natural Science Foundation of China. In particular,(1) we have presented the mechanism of the gravitational-wave production during some physical processes of the early Universe, such as inflation, preheating and phase transition, and the cosmological implications of gravitational-wave measurements;(2) we have put constraints on the neutron star maximum mass according to GW170817 observations;(3) we have developed a numerical relativity algorithm based on the finite element method and a waveform model for the binary black hole coalescence along an eccentric orbit. | Ligong Bian Rong-Gen Cai Shuo Cao Zhoujian Cao He Gao Zong-Kuan Guo Kejia Lee Di Li Jing Liu Youjun Lu Shi Pi Jian-Min Wang Shao-Jiang Wang Yan Wang Tao Yang Xing-Yu Yang Shenghua Yu Xin Zhang | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，12： | 2 |
| 7 | Photocatalytic property of Zn O microrods modified by Cu2O nanocrystals显示文摘 | Liu Kejia Zhang Junying Gao Hong | 2013 | Journal of Alloys and Compounds2013，552，5： | 1 |
| 8 | The models that be taken as initial value显示文摘 | Dang Yaoguo Liu Sifeng Chen Kejia | 2004 | Kybemetes2004，33，2： | 1 |
| 9 | The GM models that x(n) be taken as initial value显示文摘 | Dang Yaoguo Liu Sifeng Chen Kejia | 2004 | Ky- bernetes2004，33，2： | 1 |
| 10 | Influence of the amplitude ratio between two terahertz pulses on two-dimensional spectroscopy显示文摘The influence of the amplitude ratio between the two THz pulses on two-dimension THz spectroscopy(2DTS)has been studied theoretically via a classical method in which the expressions for the second-order nonlinearity were derived using perturbation approach,and the THz pulses were not treated as a delta function.Three types of nonlinear sources i.e.,anharmonicity,nonlinear damping,and nonlinear coupling,are considered in a single mode system.The simulation results demonstrated that the amplitude ratio had a notable influence on the 2DTSs,and different sources have different influences.This study is promising for guiding future experiments. | Jiangsheng Hu Jinsong Liu Huquan Li Kejia Wang Zhengang Yang Shenglie Wang | 2014 | Chinese Science Bulletin2014，59，2： | 1 |
| 11 | Oscillation effect in frequency domain current from a photoconductive antenna via double-probe-pulse terahertz detection technique显示文摘当探查搏动激动,经由构造特殊兆兆赫时间域光谱学(THz-TDS ) ,二 femtosecond (fs ) 激光在搏动的系统被使用一光导(PC ) THz 察觉者,从察觉者的水流的时间行为被测量。相应理论分析被一个著名相等电路的模型执行。当时间领域水流被转变到频率领域时,摆动效果被观察。等到在二根探针之间的延期搏动,摆动频率被决定。在频率领域水流曲线的极值的数字是到在 0.12 THz 的脉搏间隔的比例。测量 fs 激光脉搏的间隔的一个方法被建议。它为 fs 激光脉搏或火车的应用是重要的。 | Qi JIN Jinsong LIU Kejia WANG Zhengang YANG Shenglie WANG Kefei YE | 2015 | Frontiers of Optoelectronics2015，8，1： | 1 |
| 12 | Risk Factors for Gestational Diabetes Mellitus(GDM)in Subsequent Pregnancy Among Women Without GDM History in China:A Multicenter Retrospective Study显示文摘Objective:This study aimed to determine the likelihood of gestational diabetes mellitus(GDM)in subsequent pregnancy among women without GDM history and to identify risk factors for GDM in subsequent pregnancy.Methods:This retrospective cohort study involved participants who delivered twice in same hospital of 18 research centers when delivered the second baby from January 2018 to December 2018.Finally 6204 women were enrolled and 5180 women without GDM history were analyzed further.Women were categorized as non-GDM or GDM based on the blood glucose values of the subsequent pregnancy,and the characteristics and GDM risk of these groups were compared.A univariate analysis of potential risk factors was performed using the Chi-squared test and/ort-test for qualitative or quantitative variables,respectively.Associations withP values<0.1 were chosen to be included in the multivariate binary logistic regression model.Results:In primary analysis of 6204 women,the incidence of GDM in subsequent pregnancy is 48.9%(490/1002)in women with GDM history and 16.1%(835/5202)in women without GDM history.In a further analysis for 5180 women without GDM at index pregnancy,compared with the non-GDM group,the GDM group had a significantly higher age,prepregnancy body mass index,and blood glucose value at each oral glucose tolerance test(OGTT)timepoint(fasting,1 h and 2 h)during the index and subsequent pregnancies,as well as higher weight retention during the interval between the two pregnancies(P<0.001).Age above 35 years in subsequent pregnancy(odds ratio(OR)=1.540,95%confidence interval(CI)=1.257-1.886,P<0.001),macrosomia in index pregnancy(OR=1.749,95%CI=1.277-2.395,P=0.001),OGTT blood glucose values in index pregnancy(fasting,OR=2.487,95%CI=1.883-3.285,P<0.001;1 h,OR=1.142,95%CI=1.051-1.241,P=0.002;2 h,OR=1.290,95%CI=1.162-1.432,P<0.001)and weight retention(OR=1.052,95%CI=1.035-1.068,P<0.001)were independent risk factors for GDM in subsequent pregnancy.Conclusion:For women without GDM history,GDM risk factors including age,macrosomia history,OGTT value,and weight retention,these can be evaluated before a subsequent pregnancy.Early warning and interventions are needed for women at high risk. | Geng Song Yumei Wei Juan Juan Rina Su Jianying Yan Mei Xiao Xianlan Zhao Meihua Zhang Yuyan Ma Haiwei Liu Jingxia Sun Kejia Hu Huixia Yang | 2023 | Maternal-Fetal Medicine2023，5，1： | 1 |
| 13 | Prevalence and characteristics of macrosomia in the first and subsequent pregnancy: a multi-center retrospective study显示文摘To the Editor:Macrosomia is of growing prevalence and concern worldwide.In China,there has been a marked increase in the prevalence of macrosomia over the past few decades as a result of economic development and improvements in living standards. | Juan Juan Huixia Yang Yumei Wei Geng Song Rina Su Xu Chen Ruiqin Shan Jianying Yan Mei Xiao Ying Li Shihong Cui Xianlan Zhao Shangrong Fan Ling Feng Meihua Zhang Yuyan Ma Zishan You Haixia Mengn Haiwei Liu Jingxia Sun Yan Cai Kejia Hu | 2022 | Chinese Medical Journal2022，，12： | 1 |
| 14 | Numerical study of threshold gain behavior for a THz random laser in a two-dimensional active disordered medium with a three-level atomic system显示文摘By numerically solving Maxwell's equations and rate equations in a two-dimensional (2D) active random media made of ruby grains with a three-level atomic system, the threshold gain behavior for a THz random laser is investigated. The spectral intensity variation with the pumping rate is calculated for both the transverse magnetic (TM) field and the transverse electric (TE) field. The computed results show that THz random lasing could occur in a 2D disordered medium for both the TM and TE cases. Further analysis reveals that the THz lasing threshold for TM fields is lower than that for TE fields. | LIU Yong LIU JinSong WANG KeJia | 2011 | Chinese Science Bulletin2011，56，25： | 1 |
| 15 | Determination of perchlorate and its distribution in unhusked rice in China显示文摘Perchlorate concentrations in 387 unhusked rice samples from 15 main producing provinces/municipality in China were investigated by high-performance liquid chromatography-tanden mass spectrometry.The results indicated that perchlorate displays a mean level of 17.17μg/kg in un-husked rice samples.Intriguingly,we also found that perchlorate is mainly observed in rice husk among these collected unhusked rice samples,while less observed in rice bran and milled rice.Specifically,the perchlorate levels in rice were found in the husks(73.61%),bran(10.09%),and milled rice(19.52%),respectively.Our results indicated that there is no significantly perchlorate exposure risk in edible milled rice. | Changxin Shen Lian Liu Xiaoyao Yin Fengqin Tu Kejia Wu Qian Wu Lingfeng Peng Min Fang Yongning Wu Zhiyong Gong | 2022 | Food Quality and Safety2022，6，2： | 0 |
| 16 | Repeating fast radio bursts: Coherent circular polarization by bunches显示文摘Fast radio bursts(FRBs) are millisecond-duration signals that are highly dispersed at distant galaxies. However, the physical origin of FRBs is still unknown. Coherent curvature emission by bunches, e.g., powered by starquakes, has already been proposed for repeating FRBs. It has the nature of understanding narrowband radiation exhibiting time-frequency drifting. Recently, a highly active FRB source, i.e., FRB 20201124A, was reported to enter a newly active episode and emit at least some highly circular-polarized bursts. In this study, we revisit the polarized FRB emission, particularly investigating the production mechanisms of a highly circular polarization(CP) by deriving the intrinsic mechanism and propagative effect. The intrinsic mechanisms of invoking charged bunches are approached with radiative coherence. Consequently, a highly CP could naturally be explained by the coherent summation of outcome waves, generated or scattered by bunches, with different phases and electric vectors. Different kinds of evolutionary trajectories are found on the Poincaré sphere for the bunch-coherent polarization, and this behavior could be tested through future observations. Cyclotron resonance can result in the absorption of R-mode photons at a low altitude region of the magnetosphere, and an FRB should then be emitted from a high-altitude region if the waves have strong linear polarization. Circularly polarized components could be produced from Faraday conversion exhibiting a λ-oscillation, but the average CP fraction depends only on the income wave, indicating a possibility of a highly circular-polarized income wave. The analysis could be welcome if extremely high(e.g., almost 100%) CP from repeating FRBs is detected in the future. Finally, the production of a bulk of energetic bunches in the pulsar-like magnetosphere is discussed, which is relevant to the nature of the FRB central engine. | Wei-Yang Wang Jin-Chen Jiang Jiguang Lu Heng Xu Jiangwei Xu Kejia Lee Jifeng Liu Renxin Xu | 2022 | Science China(Physics,Mechanics & Astronomy)2022，65，8： | 0 |
| 17 | U型面膜固定红蜡片在放疗中的应用(英文)显示文摘Objective: The aim of our study was to compared non-red wax compensator and adding red wax compensator in the treatment plans of the minimum dose, maximum dose, mean dose and target surface dose, and compare the dose volume histograms(DVH) parameters and isodose distributions of two plans. Methods: From January 2009 to December 2010, 8 patients with superficial head and neck cancer and without surgery treatment were collected. They all confirmed by cancer center, Tianmen First People's Hospital. Topslane WiMRT was used to design the treatment plan of non-red wax compensator and adding red wax compensator, with 6 MV photons using three-dimensional conformal irradiation mode design, the prescription dose was 50 Gy/25 times. Results: Compared non-red wax compensator with adding red wax compensator, its target minimum dose(t = –3.157, P < 0.05) and the target surface dose significantly improved(t = –0.020, P < 0.05), while the target maximum dose(t = –0.140, P > 0.05) and mean dose(t = –9.914, P > 0.05) were considered no significant difference. Conclusion: The use of U-shaped mask fixed red wax film production in conformal radiotherapy tissue compensator can significantly improve the surface dose and dose distribution superficial planning target volume. | Kejia Liu Jing Song Rui Song Zhiyong Liu Gang Ni Wei Ge | 2014 | The Chinese-German Journal of Clinical Oncology2014，13，6： | 0 |
| 18 | Tight Sandstone Image Augmentation for Image Identification Using Deep Learning显示文摘Intelligent identification of sandstone slice images using deep learning technology is the development trend of mineral identification,and accurate mineral particle segmentation is the most critical step for intelligent identification.A typical identification model requires many training samples to learn as many distinguishable features as possible.However,limited by the difficulty of data acquisition,the high cost of labeling,and privacy protection,this has led to a sparse sample number and cannot meet the training requirements of deep learning image identification models.In order to increase the number of samples and improve the training effect of deep learning models,this paper proposes a tight sandstone image data augmentation method by combining the advantages of the data deformation method and the data oversampling method in the Putaohua reservoir in the Sanzhao Sag of the Songliao Basin as the target area.First,the Style Generative Adversarial Network(StyleGAN)is improved to generate high-resolution tight sandstone images to improve data diversity.Second,we improve the Automatic Data Augmentation(AutoAugment)algorithm to search for the optimal augmentation strategy to expand the data scale.Finally,we design comparison experiments to demonstrate that this method has obvious advantages in generating image quality and improving the identification effect of deep learning models in real application scenarios. | Dongsheng Li Chunsheng Li Kejia Zhang Tao Liu Fang Liu Jingsong Yin Mingyue Liao | 2023 | Computer Systems Science & Engineering2023，47，10： | 0 |
| 19 | Theta Oscillations Support Prefrontal-hippocampal Interactions in Sequential Working Memory显示文摘The prefrontal cortex and hippocampus may support sequential working memory beyond episodic memory and spatial navigation.This stereoelectroencephalography(SEEG)study investigated how the dorsolateral prefrontal cortex(DLPFC)interacts with the hippocampus in the online processing of sequential information.Twenty patients with epilepsy(eight women,age 27.6±8.2 years)completed a line ordering task with SEEG recordings over the DLPFC and the hippocampus.Participants showed longer thinking times and more recall errors when asked to arrange random lines clockwise(random trials)than to maintain ordered lines(ordered trials)before recalling the orientation of a particular line.First,the ordering-related increase in thinking time and recall error was associated with a transient theta power increase in the hippocampus and a sustained theta power increase in the DLPFC(3–10 Hz).In particular,the hippocampal theta power increase correlated with the memory precision of line orientation.Second,theta phase coherences between the DLPFC and hippocampus were enhanced for ordering,especially for more precisely memorized lines.Third,the theta band DLPFC→hippocampus influence was selectively enhanced for ordering,especially for more precisely memorized lines.This study suggests that theta oscillations may support DLPFC-hippocampal interactions in the online processing of sequential information. | Minghong Su Kejia Hu Wei Liu Yunhao Wu Tao Wang Chunyan Cao Bomin Sun Shikun Zhan Zheng Ye | 2024 | Neuroscience Bulletin2024，40，2： | 0 |
| 20 | Successful surgical resection of large hepatocellular carcinoma with portal vein tumor thrombus after conversion therapy with mFOLFOX-HAIC combined with donafenib and sintilimab:two case reports and a literature review显示文摘The aim of our study was to evaluate the clinical efficacy of m FOLFOX-HAIC combined with donafenib and sintilimab conversion therapy followed by surgical resection of large hepatocellular carcinoma with portal vein tumor thrombus(PVTT).The clinical data of two patients with large hepatocellular carcinoma who were admitted to the Second Affiliated Hospital of Kunming Medical University were retrospectively collected.Both patients received m FOLFOX-HAIC combined with donafenib and sintilimab conversion therapy,followed by hepatectomy.Clinical data were reported,and clinical efficacy was evaluated.One patient had a 14.5×11.1 cm tumor with a tumor thrombus in the right portal vein.The other patient had a 12.1×8.3 cm tumor with portal and hepatic vein tumor thrombi.Both patients had CNLC stageⅢa prior to conversion therapy,which was reduced to stageⅠb after conversion therapy.Subsequently,the patient underwent open and laparoscopic right hemihepatectomies.Short-term high-intensity conversion therapy with m FOLFOXHAIC combined with donafenib and sintilimab is a feasible and effective treatment for patients with large hepatocellular carcinoma with PVTT. | Zhitang Guo Ming Zhang Ang Liu Zhihong Zhang Kejia Li Jiayun Ge | 2023 | Oncology and Translational Medicine2023，9，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员