|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Energy analysis and criteria for structural failure of rocks显示文摘The intrinsic relationships between energy dissipation,energy release,strength and abrupt structural failure are key to understanding the evolution of deformational processes in rocks.Theoretical and experimental studies confirm that energy plays an important role in rock deformation and failure.Dissipated energy from external forces produces damage and irreversible deformation within rock and decreases rock strength over time.Structural failure of rocks is caused by an abrupt release of strain energy that manifests as a catastrophic breakdown of the rock under certain conditions.The strain energy released in the rock volume plays a pivotal role in generating this abrupt structural failure in the rocks.In this paper,we propose criteria governing(1) the deterioration of rock strength based on energy dissipation and(2) the abrupt structural failure of rocks based on energy release.The critical stresses at the time of abrupt structural failure under various stress states can be determined by these criteria.As an example,the criteria have been used to analyze the failure conditions of surrounding rock of a circular tunnel. | Heping Xie Liyun Li Ruidong Peng Yang Ju | 2009 | Journal of Rock Mechanics and Geotechnical Engineering2009，1，1： | 39 |
| 2 | Energy analysis for damage and catastrophic failure of rocks显示文摘The development history and current state of studies on the characteristics and mechanisms of deformation and failure of rock materials were briefly reviewed from the viewpoint of energy.The main scope and the achievable objectives of the energy-based research system were expatiated.It was validated by experiments that the damage process of rocks can be well described by the rock damage evolution equation established based on energy dissipation.It was found from the uniaxial compression and biaxial compression tests that only a small proportion of the total input energy in hard rocks is dissipated before peak load and a large proportion in soft rocks is dissipated before peak load.For both hard and soft rocks,the energy dissipated after peak load accounts for a greater proportion.More energy would be required for rock failure under equal biaxial compression than under unequal biaxial compression.The total absorbed energy is different for rock failure under high-rate loading and low-rate loading.More fragmented failure pattern usually corresponds to higher energy absorption.The mesoscopic analysis on the damage and failure of bedded salt rocks showed that the energy dissipation is prominent and the total absorbed energy for rock failure is low when cracks propagate in the weak mud interlayer while it is contrary when cracks propagate in the salt rock.The energy accumulation,transfer,dissipation and release during the failure process of tunnel with impending failure under disturbance were analyzed theoretically based on the elastoplastic mechanics theory.Furthermore,the spatial distribution of energy dissipation and energy release of fractured rocks under unloading was simulated numerically.It was demonstrated that energy is likely to be released from the weakest surface under compression,which triggers the global failure of rocks. | XIE HePing 1,2,LI LiYun 2,1,JU Yang 2,PENG RuiDong 2 & YANG YongMing 2 1 Sichuan University,Chengdu 610065,China 2 State Key Laboratory of Coal Resources and Safe Mining,Beijing Key Laboratory of Fracture and Damage Mechanics of Rock and Concrete,China University of Mining and Technology,Beijing 100083,China | 2011 | Science China(Technological Sciences)2011，54，S1： | 29 |
| 3 | Increased expression of human T-cell immunoglobulin-and mucin-domain-containing molecule-4 in peripheral blood mononuclear cells from patients with system lupus erythematosus显示文摘全身的豺狼座 erythematosus (SLE ) 是 prototypic 自体免疫的疾病。天生、适应的免疫合作地贡献 SLE 的发展。介绍抗原的房间(APC ) 被建议了连接天生、适应的免疫。T 房间 immunoglobulin-domain-containing 和 mucin-domain-containing molecule-4 (Tim-4;另外作为 Timd4 知道) ,首先在 APC 的表面上表示了,是 TIM 家庭,的一个成员作为免疫系统的潜在的管理者收到了许多注意的分子的一个最近描述的组。在这研究,我们使用了量的即时反向的抄写聚合酶链反应从 SLE 病人在外部血 mononuclear 房间( PBMC )检验 Tim-4 的 mRNA 表示并且进一步在 PBMC 和浆液肿瘤坏死因素( TNF )分析了在 Tim-4 和 Tim-1 (为 Tim-4 的潜在的 ligand )的表示之间的关联-伪层次。结果证明在 PBMC 的那个 Tim-4 mRNA 表达式比在健康控制在 SLE 病人是显著地更高的,特别在疾病的活跃阶段的那些病人。而且, Tim-4 mRNA 层次密切在 SLE 病人然而并非在控制组在 PBMC 并且与浆液 TNF- 伪层次与 Tim-1 mRNA 层次被相关。一起拿,这些结果证明 Tim-4 可以涉及 SLE 的致病。 | Peiqing Zhao Liyun Xu Piming Wang Xiaohong Liang Jianni Qi Peng Liu Chun Guo Lining Zhang Chunhong Ma Lifen Gao | 2010 | Cellular & Molecular Immunology2010，7，2： | 11 |
| 4 | Clinical phenotype network: the underlying mechanism for perso- nalized diagnosis and treatment of traditional Chinese medicine显示文摘繁体中文药(TCM ) 在个性化的药的一个典型纲要调查临床的诊断和治疗整齐,它意味着有一样的疾病的个性化的病人将从不同 TCM 医生获得不同诊断和最佳的治疗。这个原则被 TCM 临床的专业人员认出并且粘住几千年了。然而,个性化的药不是的 TCM 的内在的机制到目前为止充分调查了并且仍然保持未知。这份报纸讨论 TCM 的框架在经典文学并且在真实世界的临床的背景的个性化的药,并且调查 TCM 的内在的机制从网络药的观点的个性化的药。在失眠上基于 246 个设计得好的门诊病人记录,由评估表明观察的个人偏爱和植物药方的偏爱,我们注意了每张植物药方的重要类似和每相遇的症状类似。为了调查 TCM 的内在的机制,个性化药,我们构造了一个临床的显型网络(CPN ) ,在哪个临床的显型实体喜欢症状并且诊断作为连接表现为在这些实体之间的节点和关联。这 CPN 被用来调查症候群和症状的同现的混杂的边界。小世界的拓扑的特征与高聚类结构在 CPN 被注意,它在 TCM 的合理性上提供卓见个性化的诊断和处理。这个网络上的调查将帮助我们在 TCM 的内在的机制上获得理解个性化的药并且将为 TCM 的精炼建议一个新观点个性化的临床的技巧。 | Xuezhong Zhou Yubing Li Yonghong Peng Jingqing HU Runshun Zhang Liyun He Yinghui Wang Lijie Jiang Shiyan Yan Peng Li Qi Xie Baoyan Liu | 2014 | Frontiers of Medicine2014，8，3： | 7 |
| 5 | Space-confined growth of monolayer ReSe2 under a graphene layer on Au foils显示文摘Vertical heterostructures based on two-dimensional(2D)materials have attracted widespread interest for their numerous applications in electronic and optoelectronic devices.Herein,we report the direct construct!on of an abnormal graphene/ReSe2 stack on Au foils by a two-step chemical vapor deposition(CVD)strategy.During the second growth stage,mono layer ReSe2 is found to prefere ntially evolve at the irUerface between the first-grown graphene layer and the Au substrate.The unusual stacking behavior is unraveled by in-situ'cutting open'the upper graphene from the defects to expose the lower ReSe2 using scanning tunneling microscopy(STM).From combination of these results with density functional theory calculations,the domain boundaries and edge sites of graphene are proposed to be adsorption sites for Re and Se precursors,further facilitating the growth of ReSe2 at the van der Waals gap of graphene/Au.This work hereby offers an intriguing strategy for obtaining vertical 2D heterostructures featured with an ultra-clean interface and a designed stacking geometry. | Chunyu Xie Shaolong Jiang Xiaolong Zou Yuanwei Sun Liyun Zhao Min Hong Shulin Chen Yahuan Huan Jianping Shi Xiebo Zhou Zhepeng Zhang Pengfei Yang Yuping Shi Porun Liu Qing Zhang Peng Gao Yanfeng Zhang | 2019 | Nano Research2019，12，1： | 4 |
| 6 | A Thermal Event in the Ordos Basin:Insights from Illite ^40Ar-^39Ar Dating with Regression Analysis显示文摘Four samples from a Permian reservoir in the Ordos Basin of North China were separated into twelve fractions in grain sizes of <0.5, 0.5–1 and 1–2 μm. Using the ^(40)Ar-^(39)Ar step-heating method, all of the fractions essentially yielded plateau ages ranging from 172.5 to 217.1 Ma. These scattered plateau ages might not have been obtained from pure diagenetic illites but from mixed clay minerals, although the samples were disaggregated using a gentle freeze-thaw cycle to free them of non-clay minerals. A regional thermal event, as suggested by several proxies, led to intensive illitization as a distinct diagenetic process when the Yanshanian Movement triggered magmatism around the entire North China Block during the Jurassic to Cretaceous. Thermal illites formed during a short time period, whereas detrital illites came from various sources. The scattered plateau ages could have resulted from mixed degassing of thermal and detrital illites. Within one sample, the plateau ages decrease with the diminution of grain sizes, but it is difficult to extrapolate to the detrital-illite-free ages. Because the plateau age is a mixture of ages for thermal and detrital illites, this regression analysis studies the dependence of the plateau ages on the synthetic values of contents and ages of detrital illites instead of on the grain sizes. Comparing the samples to one another, the plateau ages show the same trend among the different grain sizes. Weighted by the contents and ages of detrital illites, linear regression analysis revealed the relationship between the plateau ages and the relative weight proportions. Based on iterated calculations, a thermal event age and a set of weight proportions were derived. The regressed thermal event age is 163.3±1.6 Ma, which coincides with regional thermal activities and links to gas accumulation. | Longzhang Wang Liyun Wang Ping'an Peng Tongmo Dai Dayong Liu | 2018 | Journal of Earth Science2018，29，3： | 3 |
| 7 | Thermal evolution effects on the properties of converting Cs-polluted soil into pollucite-base glass-ceramics for radioactive cesium immobilization显示文摘The Fukushima nuclear accident in Japan on March 11,2011,produced large amounts of Cs-polluted soil which must be controlled to prevent the spread of hazardous Cs into the environment.In this paper,the effects of heat treatment on the structure and properties of Cs-containing glass-ceramics,as a simulated nuclear waste form,were systematically investigated.Cesium atoms are chemically bonded in the pollucite structure,and the amorphous phase further encapsulates the pollucite crystals in the glassceramics,thus providing an extra protective layer for the immobilized Cs.XRD analysis,Raman and FT-IR studies on the glass-ceramics synergistically indicated that the optimum crystallization temperature for pollucite is around 1000℃.The pollucite is predominantly the main crystalline phase with a narrow crystal size distribution between 0.5 and 2 mm.Standard leaching test results show that the leaching rate of Cs was very low(3.0×10^(-3) g/(m^(2)·d)).The study offers a practical method for immobilizing Cs in pollucite-base glass-ceramics.Moreover,the experimentally obtained data may provide some important references for converting Cs-polluted soil into pollucite-base glass-ceramics waste form. | Yong Yang Xin Cao Lifen Shi Zhengyi Zhang Pingping Wang Jinwei Li Yangshan Sun Shuyong Chen Tianhe Wang Liyun Ma Shou Peng | 2021 | Journal of Materiomics2021，7，6： | 2 |
| 8 | The suspension-emulsion combined polymerization of flu- orinated acrylic monomer and the fluorinated latex film surface properties 显示文摘 | PENG SHUNJIN SONG LIYUN WANG YUHUA | 2011 | Colloid and Polymer Science2011，289，2： | 1 |
| 9 | A novel nonsense mutation in BBS4 gene identified in a Chinese family with Bardet-Biedl syndrome显示文摘 | Li Qian Zhang Yongpeng Jia Liyun Peng Xiaoyan | 2014 | Chinese Medical Journal2014，，24： | 1 |
| 10 | Two Successful Livebirths from Both Hemiuteruses After Laparoscopic Cervical Cerclage in a Uterus Didelphys Patient with Cervical Insufficiency显示文摘Uterus didelphys occurs in~0.4%of females and is found in~11%-20%of all uterus defects.It is a risk factor for cervical insufficiency,consequently contributing to late miscarriage or preterm birth.Thus far,only two prior cases of uterus didelphys accompanied by cervical insufficiency treated through laparoscopic cervical cerclage have been reported;however,livebirth only occurred in one hemiuterus.Herein,we report a case of uterus didelphys in a patient diagnosed with cervical insufficiency.Following the placement of a modified laparoscopic cervical cerclage,the patient had two successful livebirths through both hemiuteruses,respectively,with longer gestation age(ie,>36 weeks).The aim of this case report was to provide useful information for clinical practitioners to make better decisions on the management of cervical insufficiency in patients with uterus didelphys,and identify obstetric complications that clinicians should pay attention to during pregnancy. | Limei Zhang Xue Zhong Yuqing Chen Tianyu Peng Liyun Yu Jian Cai Shuzhong Yao Zilian Wang | 2022 | Maternal-Fetal Medicine2022，4，2： | 1 |
| 11 | Factors affectingsolid phase microextraction(SPME) to concentrate the odorants of Chinesewhite salted显示文摘 | LIN Liyun PENG Chiunghuei WANG Huier | 2007 | Flavour Fragr2007，22，4： | 1 |
| 12 | Two-step demodulation algorithm based on the orthogonality of diamond diagonal vectors 显示文摘 | Chunshu Luo Liyun Zhong Peng Sun et aL | 2015 | Applied Physics B2015，119，2： | 1 |
| 13 | Study on temperature field and settlement of thawing soil under static and dynamic loading显示文摘A series of tests were conducted to analyze temperature field distribution and thawing settlement of a thawing soil under static and dynamic loading at various cooling and thawing temperatures. The results demonstrate:(1) the temperature field distribution of the thawing soil was not significantly influenced by the loading form under the tested loading conditions;similar results were obtained for samples at different dynamic loading frequencies and different dynamic loading amplitudes, which verified the independence of loading form and temperature field;(2) changed temperature field distributions were found in thawing soil with different cooling and thawing temperatures, and the cooling and thawing temperature of the samples were the main factors affecting their temperature distributions;(3) under the tested conditions, thawing settlements were little influenced by the thawing temperature and the dynamic loading frequency; and(4) a linear relationship existed between the thawing settlement and the cooling temperature, and a logarithmic function could be used to describe the relationship between the thawing settlement and the loading amplitude. | LiYun Peng JianKun Liu | 2013 | Research in Cold and Arid Regions2013，5，5： | 0 |
| 14 | A new LFSR based high-frequency test method for RSFQ circuit显示文摘Rapid single flux quantum(RSFQ)circuits have the advantages of high speed and low power consumption.The typical frequency of the RSFQ circuits is tens of GHz.Therefore,it is necessary to reliably test the highfrequency performance of RSFQ circuits simply and effectively.This paper proposes a new on-chip highfrequency testing method,which uses pseudo-random sequences generated by linear feedback shift register(LFSR)as the test vectors,and the output shift registers(SRs)to store the last piece of high-frequency testing result and read out it at low-frequency.Unlike the traditional high-frequency demonstration method of using the Input/Output SRs,our testing system can automatically generate a large number of test vectors to test the circuit at high frequency at low cost,making the whole high-frequency demonstration more reliable and convincing.On the other hand,this method is also a feasible and straightforward on-chip high-frequency test method for various RSFQ circuits.This work verified the proposed method,and the highest test frequency can reach 54 GHz while the circuit shows good operating margins. | Liyun Chen Songrui Li Liliang Ying Minghui Niu Huanli Liu Hui Zhang Xue Zhang Xiaoping Gao Jie Ren Wei Peng Zhen Wang | 2022 | Superconductivity2022，，2： | 0 |
| 15 | An integrative analysis of metabolomics,DNA methylation and RNASeq data reveals key genes involved in albino tea'Haishun 2'显示文摘Albino tea,a type of tea closely associated with the chlorophyll-deficient phenotype is of great interest due to its multiple benefits to human health.To explore the potential mechanisms involved in albino tea,we performed metabolomics,DNA methylation and RNA-Seq analysis of green and albino leaves in a special tea mutant'Haishun 2'.The albino leaves accumulated significantly less catechins compared with the green leaves,which is closely associated with their difference in chlorophyll formation.A total of 385 candidate genes were identified by the integrative analysis.Two NAC transcription factors were less methylated and highly up regulated in the albino leaves of'Haishun 2',which was the first identification of the key roles of NAC transcription factors in albino tea and worth further study.Many genes involved in catechin biosynthesis were down regulated in albino leaves,such as 4-coumarate-CoA ligase,flavonol synthase and leucoanthocyanidin reductase genes,suggesting chlorophyll formation is important for catechin biosynthesis.Furthermore,CsMYB5 and CsGSTF11 were found to be differentially methylated and expressed in albino and green leaves,indicating their potential roles in catechin accumulation.This was the first report of the integrative analysis of transcriptome and DNA methylation data in tea plants and the results suggest that the integrative analysis is useful for exploring key genes associated with epigenetic changes in tea plants. | Kang Wei Shuping Yu Qili Quan Shirin Aktar Mengdi He Yazhen Zhang Huihan Fang Rongmei Wu Li Ruan Peng Mao Peixian Bai Liyun Wu Hao Cheng Liyuan Wang | 2022 | Beverage Plant Research2022，2，1： | 0 |
| 16 | Impact of Mega-Events on Community Residents显示文摘The hosting of mega-events is an important driving force for the development of urban tourism. The recognition and support of local community residents are one of the most important factors in the success of mega-events. The study of the impact of mega-events on community residents is crucial to the success of the events. Taking the thesis Comparative Study on Residents' Perceptions to the Followup Impacts of the 2008 Olympics for example, this paper, from the perspective of the impact of megaevents on community residents, discussed the contribution of this thesis to Beijing and Zhangjiakou, the host city and co-host city for the 2022 Winter Olympics respectively, and the countermeasures that should be taken by event organizers. | WU Liyun MA Ming PENG Shuzhen | 2018 | Journal of Landscape Research2018，10，2： | 0 |
| 17 | A theoretical framework for thawing soil显示文摘This paper puts forward the coupling model of the heat-moisture-stress field based on the governing equation of non-stationary heat transfer, moisture movement and the basic differential equations of deformation problem by displacement under axisymmetric conditions. Using a detailed calculation example for the section of the Xiang Pi Mountain in 109th National Highway, a mechanical model of the cylinder made by typical silty clay soil is simulated. Results show that in the coupling process, dynamic stress pays little contribution to the distribution of temperature field along different depths, and the amount of thawing deformation increased with dynamic loading time under the same frequency and amplitude. | Feng Shi JianKun Liu LiYun Peng | 2013 | Research in Cold and Arid Regions2013，5，4： | 0 |
| 18 | “Three‐in‐one”strategy:Heat regulation and conversion enhancement of a multifunctional separator for safer lithium-sulfur batteries显示文摘The safety problems encountered with lithium–sulfur batteries(LSBs)hinder their development for practical applications.Herein,a highly thermally conductive separator was constructed by cross‐weaving super‐aligned carbon nanotubes(SA‐C)on super‐aligned boron nitride@carbon nanotubes(SA‐BC)to create a composite film(SA‐BC/SA‐C).This separator was used to fabricate safe LSBs with improved electrochemical performance.The highly aligned separator structure created a uniform thermal field that could rapidly dissipate heat accumulated during continuous operation due to internal resistance,which prevented the development of extremely high temperatures.The array of boron nitride nanosheets endowed the composite separator with a large number of adsorption sites,while the highly graphitized carbon nanotube skeleton accelerated the catalytic conversion of high‐valence polysulfides into low‐valence polysulfides.The arrayed molecular brush design enabled the regulation of local current density and ion flux,and considerably alleviated the growth of lithium dendrites,thus promoting the smooth deposition of Li metal.Consequently,a battery constructed with the SA‐BC/SA‐C separator showed a good discharge capacity of 685.2 mAh g−1 over 300 cycles(a capacity decay of 0.026%per cycle)at 2 C and 60°C.This“three‐in‐one”multifunctional separator design strategy constitutes a new path forward for overcoming the safety problems of LSBs. | Kaiping Zhu Luhe Li Pan Xue Jun Pu Liyun Wu Gengde Guo Ran Wang Ye Zhang Huisheng Peng Guo Hong Qiang Zhang Yagang Yao | 2023 | Carbon Energy2023，5，11： | 0 |
| 19 | Natural killer cells in obstetric antiphospholipid syndrome显示文摘Antiphospholipid syndrome(APS)is a systemic autoimmune disease characterized by thrombotic or obstetric events caused by persistent antiphospholipid antibodies(aPLs),namely lupus anticoagulant,anticardiolipin antibodies,or anti-β2 glycoprotein I(anti-β2GPI)antibodies.^([1])The main target antigen in APS isβ2GPI,through which aPL binds to the cell membrane and subsequently activates membrane receptors and down-stream signal transducers.This may activate natural killer(NK)cells,leading to obstetric complications. | Rongxiu Huo Qianyu Guo Junping Hu Na Li Hechao Liu Zhaoliang Zhang Liangyu Mi Xinyue Peng Liyun Zhang Ke Xu | 2022 | Chinese Medical Journal2022，，7： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员