|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Metamorphic Characteristics and Tectonic Implications of the Kadui Blueschist in the Central Yarlung Zangbo Suture Zone,Southern Tibet显示文摘The Kadui blueschist is located in the central section of Yarlung Zangbo suture zone(YZSZ), southern Tibet, and has been subjected to the subduction of the Neo-Tethyan Ocean below the Asian Plate and provides important clues for better understanding the evolution of the India-Asia convergence zone. In this paper, the systematical petrographic and mineral chemical studies were carried out on the Kadui blueschist, which reveal a mineral assemblage of sodic amphibole, chlorite, epidote, albite and quartz with accessory minerals of titanite, calcite and zircon. Electron microprobe analyses demonstrate that amphibole shows zoned from actinolite core to ferrowinchite/riebeckite rim composition indicating that the sodic amphibole has formed during a prograde metamorphic event. The protolith of the blueschist is an intermediate-basic pyroclastic rock. The calculated pseudosection indicates a clockwise P-T path and constrains peak metamorphic conditions of about 5.9 kbar at 345 ℃. This condition is transitional between pumpellyite-actinolite, greenschist and blueschist facies with a burial depth of 20–22 km and a thermal gradient of 15–16 ℃/km. This thermal gradient belongs to high pressure intermediate P/T facies series and is possibly related to a warm subduction setting of young oceanic slabs. Our new findings indicate that the Kadui blueschist in the central part of YZSZ experienced a rapid subduction and exhumation process as a response to a northward subduction of the Neo-Tethyan oceanic lithosphere during the initial India-Asia collision stage. | Guangming Sun Xu-Ping Li WenYong Duan Shuang Chen Zeli Wang Lingquan Zhao Qingda Feng | 2018 | Journal of Earth Science2018,29,5: | 12 |
| 2 | Metamorphic Evolution and Zircon U-Pb Ages of the Nanshankou Mafic High Pressure Granulites from the Jiaobei Terrane, North China Craton显示文摘Petrological analysis and LA-ICP-MS zircon U-Pb dating were conducted on high-pressure mafic granulites, which occured as xenolith within TTG gneisses, from the Nanshankou Village of the Jiaobei terrane, Shandong Peninsula in the north-eastern part of the North China Craton(NCC). The mafic HP granulite is composed of garnet, clinopyroxene, orthopyroxene, amphibole and symplectitic clinopyroxene, orthopyroxene, plagioclase, ilmente and magnetite which were formed after the decomposition of porphyroblastic garnet and clinopyroxene. Four stages of metamorphic mineral assemblages for the mafic HP granulites were constrained by detail petrological and mineralogical investigations. The early prograde assemblage is represented by the mineral inclusions within garnet and clinopyroxene porphyroblasts(Opx_1+Pl_1+Qtz_1), recording the metamorphic conditions at ~754–757 ℃, 0.63–0.71 GPa; peak metamorphic conditions were determined at ~874–891 ℃, 1.32–1.35 GPa with the mineral assemblage of Grt_2+Cpx_2+Amp_2+Pl_2+Qtz_2. Retrograde minerals derived from symplectitic assemblage Opx_3+Cpx_3+Amp_3+Pl_3+Qtz_3+Ilm_3±Mag_3 were formed at 693–796 ℃, 0.60–0.84 GPa. A final greenschist to sub-greenschist facies event was recorded by the exsolution of actinolite and albite within a retrograded clinopyroxene, as well as the occurrence of prehnite, chlorite and calcite minerals. Accordingly, a clockwise P-T path was concluded on the basis of the different stages of mineral asseblage. Cathodoluminescence imaging, trace element and U-Pb dating of zircons from the mafic HP granulites recorded similar charactistics for three episodes of Paleo–Meso Proterozoic metamorphic events. These are the metamorphic events preserved in mafic and pelitic granulites in the Jiao-Liao-Ji belt(JLJB) with ^(207)Pb/^(206)Pb ages of 2.0-1.9 Ga for peak metamorphism and of 1.86-1.84 Ga for decomposing process, followed by a retrograde amphibolite facies metamorphic event related to the post-orogenic extension at the age of 1.76-1.74 Ga, resulting the exhumation of the granulite to the upper crust level. | Shuang Chen Xu-Ping Li Fanmei Kong Qingda Feng | 2018 | Journal of Earth Science2018,29,5: | 12 |
| 3 | Distributed Flow Shop Scheduling with Sequence-Dependent Setup Times Using an Improved Iterated Greedy Algorithm显示文摘To meet the multi-cooperation production demand of enterprises,the distributed permutation flow shop scheduling problem(DPFSP)has become the frontier research in the field of manufacturing systems.In this paper,we investigate the DPFSP by minimizing a makespan criterion under the constraint of sequence-dependent setup times.To solve DPFSPs,significant developments of some metaheuristic algorithms are necessary.In this context,a simple and effective improved iterated greedy(NIG)algorithm is proposed to minimize makespan in DPFSPs.According to the features of DPFSPs,a two-stage local search based on single job swapping and job block swapping within the key factory is designed in the proposed algorithm.We compare the proposed algorithm with state-of-the-art algorithms,including the iterative greedy algorithm(2019),iterative greedy proposed by Ruiz and Pan(2019),discrete differential evolution algorithm(2018),discrete artificial bee colony(2018),and artificial chemical reaction optimization(2017).Simulation results show that NIG outperforms the compared algorithms. | Xue Han Yuyan Han Qingda Chen Junqing Li Hongyan Sang Yiping Liu Quanke Pan Yusuke Nojima | 2021 | Complex System Modeling and Simulation2021,1,3: | 4 |
| 4 | 2-Methylimidazole assisted ultrafast synthesis of carboxylate-based metal–organic framework nano-structures in aqueous medium at room temperature显示文摘Carboxylate-based metal–organic frameworks(CMOFs)have received considerable attentions for their high stability,catalytic activity,and porosity.However,synthesis of CMOFs requires high temperature,pressure,and long reaction time.Here,we explored the activity of 2-methylimidazole(2-MIM)for ultrafast synthesis of CMOF nanostructures(CMOFNs),in aqueous medium at room temperature and reaction time of 10 min.Seven CMOFNs have been synthesized by using Al3+,Cr3+,Cu2+,Fe3+,In3+,or Cd2+salt and1,4-bezenedicarboxylic acid,or 1,3,5-benzenetricarboxylic acid.Through this technique,the CMOFs with space time yield 181–501 kgcrystal sizes of ca.200–700 nm was obtained. | Shaheed Ullah Bilal Akram Hassan Ali Hao Zhang Haozhou Yang Qingda Liu Xun Wang | 2019 | Science Bulletin2019,64,15: | 2 |
| 5 | Targeted therapeutics and novel signaling pathways in nonalcohol-associated fatty liver/steatohepatitis(NAFL/NASH)显示文摘Non-alcohol-associated fatty liver/steatohepatitis(NAFL/NASH)has become the leading cause of liver disease worldwide.NASH,an advanced form of NAFL,can be progressive and more susceptible to developing cirrhosis and hepatocellular carcinoma.Currently,lifestyle interventions are the most essential and effective strategies for preventing and controlling NAFL without the development of fibrosis.While there are stll limited appropriate drugs specifically to treat NAFL/NASH,growing progress is being seen in elucidating the pathogenesis and identifying therapeutic targets.In this review,we discussed recent developments in etiology and prospective therapeutic targets,as well as pharmacological candidates in pre/clinical trials and patents,with a focus on diabetes,hepatic lipid metabolism,inflammation,and fibrosis.Importantly,growing evidence elucidates that the disruption of the gut-liver axis and microbederived metabolites drive the pathogenesis of NAFL/NASH.Extracellular vesicles(EVs)act as a signaling mediator,resulting in lipid accumulation,macrophage and hepatic stellate cell activation,further promoting inflammation and liver fibrosis progression during the development of NAFL/NASH.Targeting gut microbiota or EVs may serve as new strategies for the treatment of NAFL/NASH.Finally,other mechanisms,such as cell therapy and genetic approaches,also have enormous therapeutic potential.Incorporating drugs with different mechanisms and personalized medicine may improve the efficacy to better benefit patients with NAFL/NASH. | Xiaohan Xu Kyle L.Poulsen Ljuan Wu Shan Liu Tatsunori Miyata Qiaoling Song Qingda Wei Chenyang Zhao Chunhua Lin Jinbo Yang | 2022 | Signal Transduction and Targeted Therapy2022,7,9: | 2 |
| 6 | Enzymatic synthesis of ascorbyl palmitate by transesterification in non-aqueous medium显示文摘 | An Qingda DONG Xiaoli WANG Shao MA Jinhui | 2001 | HECHENG HUAXUE2001,9,2: | 1 |
| 7 | A flexible neural implant with ultrathin substrate for low-invasive brain–computer interface applications显示文摘Implantable brain–computer interface(BCI)devices are an effective tool to decipher fundamental brain mechanisms and treat neural diseases.However,traditional neural implants with rigid or bulky cross-sections cause trauma and decrease the quality of the neuronal signal.Here,we propose a MEMS-fabricated flexible interface device for BCI applications.The microdevice with a thin film substrate can be readily reduced to submicron scale for low-invasive implantation.An elaborate silicon shuttle with an improved structure is designed to reliably implant the flexible device into brain tissue.The flexible substrate is temporarily bonded to the silicon shuttle by polyethylene glycol.On the flexible substrate,eight electrodes with different diameters are distributed evenly for local field potential and neural spike recording,both of which are modified by Pt-black to enhance the charge storage capacity and reduce the impedance.The mechanical and electrochemical characteristics of this interface were investigated in vitro.In vivo,the small cross-section of the device promises reduced trauma,and the neuronal signals can still be recorded one month after implantation,demonstrating the promise of this kind of flexible BCI device as a low-invasive tool for brain–computer communication. | Zhejun Guo Fang Wang Longchun Wang Kejun Tu Chunpeng Jiang Ye Xi Wen Hong Qingda Xu Xiaolin Wang Bin Yang Bomin Sun Zude Lin Jingquan Liu | 2022 | Microsystems & Nanoengineering2022,8,6: | 1 |
| 8 | Brief introduction of inventory transportation integrated optimization problem显示文摘 | Yuan Qingda | 2000 | Logistics Technology2000,6,4: | 1 |
| 9 | Cohesive models for damage evolution in laminated composites显示文摘 | Qingda Yang Brian Cox | 2005 | International Journal of Fracture2005,,2: | 1 |
| 10 | Pb(II) removal of Fe 3 O 4 @SiO 2 –NH 2 core–shell nanomaterials prepared via a controllable sol–gel process显示文摘 | Jianming Zhang Shangru Zhai Shi Li Zuoyi Xiao Yu Song Qingda An Ge Tian | 2013 | Chemical Engineering Journal2013,,: | 1 |
| 11 | Optical absorption and photoluminescence in Sm 3+ - and Eu 3+ -doped rare-earth borate glasses显示文摘 | Hai Lin Dianlai Yang Guishan Liu Tiecheng Ma Bin Zhai Qingda An Jiayou Yu Xiaojun Wang Xingren Liu Edwin Yue-Bun Pun | 2004 | Journal of Luminescence2004,,1: | 1 |
| 12 | Mixed H2/H∞distributed robust model predictive control for poly-topic uncertain systems subject to actuator saturation and missing measurements显示文摘 | YAN Song Xiaosheng Fang Qingda Diao | 2015 | International Journal of Systems Science2015,47,4: | 1 |
| 13 | Hydrogen bond promoted thermal stability enhancement of acetate based ionic liquid显示文摘Acetate-based imidazolium ionic liquids(ILs)are of great importance and widely applied in biomass processing and engineering but under stability issue due to the structure self–rearrangement induced by C2–H deprotonation,by which the IL based biomass processing will be challenging.Herein,we demonstrated that the thermal stability of normal acetate-based imidazolim[C8C1Im][OAc]could be significantly improved by changing its cation and anion environment with the presence of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide IL([C4C1Im][NTf2]).When the molar fraction of[C8C1Im][OAc]was 0.3,the thermal stability of[C8C1Im][OAc]could be significantly improved(ΔT5%dec=+43°C).Detailed information obtained from thermal gravimetric analysis(TGA)and nuclear magnetic resonance(NMR)revealed that the addition of[C4C1 Im][NTf2]played a significant role in enhancing the thermal stability of[C8C1Im][OAc].It was proposed that the formation of an anion–π+structure network between[C8C1 Im][OAc]and[C4C1Im][NTf2]via strong hydrogen bond interactions greatly affects the environment of hydrogen atom in the imidazolium ring of each IL. | Ling Zhang Ligang Wei Shangru Zhai Dingwei Zhao Jian Sun Qingda An | 2020 | Chinese Journal of Chemical Engineering2020,28,5: | 1 |
| 14 | Based On K-means Disease Diagnosis Research显示文摘For the diagnosis of diseases,modern medicine usually searches for diseases in the disease database to find the type of disease that matches them.The diagnosis of diseases is the first step in treatment.Then the classification of diseases is the basis of disease diagnosis.Disease classification plays an extremely important role in the scientific management of medical records and the development of modern medicine,and is a bridge connecting modern medical science.Therefore,the classification of diseases is very necessary.Based on this,this article establishes a K-means model for disease diagnosis,and combines the internationally unified disease type code ICD statistics table to classify the sample data set into infectious and parasitic diseases,tumors,diabetes and circulatory diseases The training is perfect,and finally the diagnosis classification of the disease is realized. | Jiaqi Wu Qingda Zhang Linlin Zhao | 2020 | Journal of Computer Science Research2020,2,1: | 0 |
| 15 | Research on Civics Teaching in Surveying Program显示文摘The integration of the civics course and surveying professional course is an important part of the teaching reform of surveying,which is an important way to implement the principle of cultivating educated talents with moral characters for the country.Based on the surveying course,this paper deeply analyses the spirit of hard work and endurance,craftsmanship,innovation,and national sentiment contained in surveying,carries the civics education with professional knowledge,and makes the civics element subliminally enter the brain and heart,so as to improve the patriotic sentiment and professional quality of students. | Qingda Duan Dan Su Na Duan | 2023 | Journal of Contemporary Educational Research2023,7,9: | 0 |
| 16 | Real-time identification of multiple nanoclusters with a protein nanopore in single-cluster level显示文摘It is important and challenging to analyze nanocluster structure with atomic precision.Herein,α-hemolysin nanopore was used to identify nanoclusters at the single molecule level by providing two-dimensional(2D)dwell time–current blockage spectra and translocation event frequency which sensitively depended on their structures.Nanoclusters such as Anderson,Keggin,Dawson,and a few lacunary Dawson polyoxometalates with very similar structures,even with only a two-atom difference,could be discriminated.This nanopore device could simultaneously measure multiple nanoclusters in a mixture qualitatively and quantitatively.Furthermore,molecular dynamics(MD)simulations provided microscopic understandings of the nanocluster translocation dynamics and yielded 2D dwell time–current blockage spectra in close agreement with experiments.The nanopore platform provides a novel powerful tool for nanocluster characterization. | Ling Zhang Peilei He Huang Chen Qingda Liu Libo Li Xun Wang Jinghong Li | 2024 | Nano Research2024,17,1: | 0 |
| 17 | Cluster-assembled materials:Ordered structures with advanced properties显示文摘Cluster-assembled materials(CAMs)present delicate structures and tailored properties,which have gained extensive interest in recent years.Due to the noncovalent linkage and size of sub-1 nm,clusters present polymer-like solution behaviors distinct from conventional nanocrystals,whereby a variety of CAMs with different constructions have been fabricated.To our knowledge,the morphologies and properties of CAMs are closely connected,which are strongly dependent on the structure and coordination state of cluster building blocks.For the CAMs with superior performances,the specific arrangement and surroundings of clusters at subnanometer scale usually result in wellorganized structures.In this review,we will summarize the recent progress of CAMs with highly ordered structures and advanced properties,where polyoxometalate cluster assemblies as well as cluster-nuclei co-assemblies are involved.The application potentials of CAMs are then discussed,especially on the cluster arrangements and interactions at subnanometer scale.However,current researches are far from reaching the point,and future efforts are needed before the nature of cluster-based nanostructures can be sufficiently revealed.We hope this article can offer unique insights and instructive understanding to the CAMs. | Qingda Liu Xun Wang | 2021 | InfoMat2021,3,8: | 0 |
| 18 | Effects of formaldehyde on fermentable sugars production in the low-cost pretreatment of corn stalk based on ionic liquids显示文摘Low cost processing of lignocellulosic biomass is of great importance for sustainable chemistry and engineering.Herein,a low cost system composed of 1-butyl-3-methylimidazolium chloride([C_(4)C_(1) im]Cl),HCl and formaldehyde(FA)was developed for the pretreatment of corn stalk at 80℃.The efficiency of this technology was compared with that in dioxane system or without FA addition.Due to FA stabilization,the extent of acid-hydrolysis of carbohydrate fraction can be significantly decreased while 70%above of lignin was removed with the pretreatment of[C_(4)C_(1) im]Cl/HCl/FA system at 80℃for 2 h.A maximum reducing sugar yield of 93.7%and glucose concentration of 7.0 mg·ml^(-1) were subsequently obtained from enzymatic hydrolysis of the slurry.There were great differences in compositions of small molecule degraded products obtained with FA addition or not.The present[C_(4)C_(1) im]C_(l) based system exhibits great potential of substituting volatile organic solvents(i.e.dioxane)in developing low cost lignocellulosic biomass pretreatment at low temperature.Also,this work would gain insight into understanding on the roles of stabilization methods on the economic improvement of IL based biomass processing. | Kaili Zhang Ligang Wei Qingqin Sun Jian Sun Kunlan Li Shangru Zhai Qingda An Junwang Zhang | 2022 | Chinese Journal of Chemical Engineering2022,35,2: | 0 |
| 19 | Application of ASTLOF scoring system in the treatment of acute symptomatic thoracolumbar compression fractures显示文摘Background:Osteoporotic vertebral compression fracture(OVCF)is a common injury in the el-derly,often caused by low-energy injuries.Improper treatment will not only affect the stability and balance of the spine,but in severe cases will lead to neurological damage and inerease the risk of death.This retro-spective study aims to explore the principles of treatment of patients with the assessment system of thora-columbar osteoporotic fracture(ASTLOF)in acute symptomatic thoracolumbar compression fractures when the ASTLOF score=4 points.Methods:The clinical data of patients with acute symptomatic thoracolumbar compression fractures admitted from February 2018 to February 2020 were retrospectively analyzed.Each patient was evaluated according to the ASTLOF scoring system,and patients with ASTLOF score=4 were selected,a total of 108 patients.According to different treatment methods,they were divided into 32 cases in the non-surgical treatment(NST)group and 76 cases in the surgical treatment(ST)group.The visual analog score(VAS),Oswestry disability index(ODI),the recovery of injured vertebral body height,and the incidence of adjacent segment fractures were used for comprehensive evaluation.Results:During the follow-up,the VAS score and ODI score showed that the early pain relief and functional improvement of the surgical treatment group were better than those of the conservative treatment group(P<0.05);the Cobb angle of the surgical treatment group was 3 months and 6 months after the operation,and the vertebral body was injured.The degree of improvement of margin height was better than that of the conservative treatment group(all P<0.05);in the surgical treatment group,6 cases of adjacent vertebral fractures occurred after surgery,accounting for 7.89%,and 2 cases of the conservative treatment group had adjacent vertebral fractures,accounting for 6.25%There was no statistically significant difference between the two groups(P>0.05).Conclusions:When the ASTLOF scoring system is used in the treatment of acute symptomatic thoracolumbar compression fractures,patients with ASTLOF score=4 should be treated with surgery in time,which can re-lieve pain early and quickly,perform functional exercises as soon as possible,and reduce complications re-lated to long-term bed rest.Whether it increases the risk of adjacent vertebral fractures requires long-term follow-up studies in a large number of cases. | Li Qingda Yang Junsong Liu Tuanjiang He Baorong Zhang Xuefang Hao Dingjun | 2021 | 美中国际创伤杂志2021,20,1: | 0 |
| 20 | An Improved Granulated Convolutional Neural Network Data Analysis Model for COVID-19 Prediction显示文摘As COVID-19 poses a major threat to people’s health and economy,there is an urgent need for forecasting methodologies that can anticipate its trajectory efficiently.In non-stationary time series forecasting jobs,there is frequently a hysteresis in the anticipated values relative to the real values.The multilayer deep-time convolutional network and a feature fusion network are combined in this paper’s proposal of an enhanced Multilayer Deep Time Convolutional Neural Network(MDTCNet)for COVID-19 prediction to address this problem.In particular,it is possible to record the deep features and temporal dependencies in uncertain time series,and the features may then be combined using a feature fusion network and a multilayer perceptron.Last but not least,the experimental verification is conducted on the prediction task of COVID-19 real daily confirmed cases in the world and the United States with uncertainty,realizing the short-term and long-term prediction of COVID-19 daily confirmed cases,and verifying the effectiveness and accuracy of the suggested prediction method,as well as reducing the hysteresis of the prediction results. | Meilin Wu Lianggui Tang Qingda Zhang Ke Yan | 2023 | Intelligent Automation & Soft Computing2023,,7: | 0 |