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| 1 | Stable classi?cation with limited sample: transferring a 30-m resolution sample set collected in 2015 to mapping 10-m resolution global land cover in 2017显示文摘As the world strives to reduce the impact of population growth, urbanization, agricultural expansion, and climate change on food security, energy and water shortage, resource over-exploration, biodiversity loss, environmental pollution, and ultimately human health, timely and higher resolution land cover information is urgently needed to achieve the sustainable development goals of the United Nations. | Peng Gong Han Liu Meinan Zhang Congcong Li Jie Wang Huabing Huang Nicholas Clinton Luyan Ji Wenyu Li Yuqi Bai Bin Chen Bing Xu Zhiliang Zhu Cui Yuan Hoi Ping Suen Jing Guo Nan Xu Weijia Li Yuanyuan Zhao Jun Yang Chaoqing Yu Xi Wang Haohuan Fu Le Yu Iryna Dronova Fengming Hui Xiao Cheng Xueli Shi Fengjin Xiao Qiufeng Liu Lianchun Song | 2019 | Science Bulletin2019,64,6: | 166 |
| 2 | Qi-Qin Accretionary Belt in Central China Orogen: accretion by trench jam of oceanic plateau and formation of intra-oceanic arc in the Early Paleozoic Qin-Qi-Kun Ocean显示文摘Most orogenic belts have experienced a complex accretionary process with multiple episodes of sea?oor subduction and trench retreat.This accretionary process is important in continenta development and growth[1,2].Three giant orogens extend in China,e.g.,the Central Asian Orogen in the north,the Central China Orogen in the middle and the Himalayan Orogen in the southwest.They are keys for the formation of the Eurasian continent(Fig.1a).The Central China Orogen | Shuguang Song Liming Yang Yuqi Zhang Yaoling Niu Chao Wang Li Su Yanlin Gao | 2017 | Science Bulletin2017,62,15: | 28 |
| 3 | Chinese progress in geomorphometry显示文摘Geomorphometry,the science of digital terrain analysis(DTA),is an important focus of research in both geomorphology and geographical information science(GIS).Given that 70% of China is mountainous,geomorphological research is popular among Chinese scholars,and the development of GIS over the last 30 years has led to significant advances in geomorphometric research.In this paper,we review Chinese progress in geomorphometry based on the published literature.There are three major areas of progress:digital terrain modelling methods,DTA methods,and applications of digital terrain models(DTMs).First,traditional vector-and raster-based terrain modelling methods,including the assessment of uncertainty,have received widespread attention.New terrain modelling methods such as unified raster and vector,high-fidelity,and real-time dynamic geographical scene modelling have also attracted research attention and are now a major focus of digital terrain modelling research.Second,in addition to the popular DTA methods based on topographical derivatives,geomorphological features,and hydrological factors extracted from DTMs,DTA methods have been extended to include analyses of the structure of underlying strata,ocean surface features and even socioeconomic spatial structures.Third,DTMs have been applied to fields including global climate change,analysis of various typical regions,lunar surface and other related fields.Clearly,Chinese scholars have made significant progress in geomorphometry.Chinese scholars have had the greatest international impact in areas including high-fidelity digital terrain modelling and DTM-based regional geomorphological analysis,particularly in the Loess Plateau and the Tibetan Plateau regions. | LV Guonian XIONG Liyang CHEN Min TANG Guoan SHENG Yehua LIU Xuejun SONG Zhiyao LU Yuqi YU Zhaoyuan ZHANG Ka WANG Meizhen | 2017 | Journal of Geographical Sciences2017,27,11: | 14 |
| 4 | Biodegradable mineralized collagen plug for the reconstruction of craniotomy burr‐holes:A report of three cases显示文摘Objectives: In this case report, we describe the design, fabrication and clinical outcomes of a novel bioresorbable, mineralized collagen burr‐hole plug for the reconstruction of craniotomy burr‐holes. Methods: Mineralized collagen burr‐hole plugs were fabricated via a biomimetic mineralization process. The biomimetic mineralized collagen has a similar chemical composition and microstructure to natural bone tissue, thereby possessing good biocompatibility and osteoconductivity. The mineralized collagen burr‐hole plugs were implanted into three patients, and clinical outcomes were evaluated at one‐year follow‐ups. Results: All bone defects healed very well using the mineralized collagen burr‐hole plugs, and there were no adverse reactions at the surgical sites. Conclusions: The clinical outcomes indicated that the mineralized collagen was effective for reconstructing burr‐holes in the skull after craniotomy. | Zhiye Qiu Yuqi Zhang Ziqiang Zhang Tianxi Song Fuzhai Cui | 2015 | Translational Neuroscience and Clinics2015,1,1: | 13 |
| 5 | Outline of Uranium Resources Characteristics and Metallogenetic Regularity in China显示文摘Uranium,as one of twenty-six kinds of important minerals in China,is strategic resource and energy mineral,which has been thoroughly investigated in the project of National Potential Evaluation of Uranium Resource.During the implementation of this project,the authors summarized the metallogenic regularity of uranium resource in China systematically,through the researches of geological characteristics of uranium resource,uranium deposits type(genetic and prediction type),temporal and spatial distribution,and metallogenic series.Based on the investigation of present situation and progress in uranium exploration,this paper proposes the uranium deposits in China should be divided into 4 classes,9 types,21 subtypes in genetic,and 50 types in prediction;suggests to divide China into 29 uranium metallogenic belts and 20 uranium prospective area,and constructs 20uranium-polymetallic metallogenic series,through summarizing temporal and spatial distribution characteristics and metallogenic regularity of uranium deposits in China.The above research is beneficial to the comprehensive understanding of regional uranium metallogenic regularity,and will direct the uranium exploration in the future. | CAI Yuqi ZHANG Jindai LI Ziying GUO Qingyin SONG Jiye FAN Honghai LIU Wusheng QI Fucheng ZHANG Minglin | 2015 | Acta Geologica Sinica(English Edition)2015,89,3: | 11 |
| 6 | Comparative study on skin temperature response to menstruation at acupuncture points in healthy volunteers and primary dysmenorrhea patients显示文摘OBJECTIVE:To assess skin temperature response to menstruation at acupuncture points in primary dysmenorrhea(PD) patients and healthy volunteers so as to explore acupuncture point specificity in reflecting diseases in the light of skin temperature.METHODS:Fifty-two PD patients and 49 healthy volunteers were recruited.Skin temperature measurements were performed with a skin temperature assessment device at 10 points.Absolute difference between skin temperature of the same point on the left and right side is used as main outcome measure.RESULTS:On the first day of menstruation, when menstrual pain attacking in PD patients, a significant increase in skin temperature difference was detected at Taixi(KI 3) compared with the healthy group(P < 0.01).A significant reduction in skin temperature difference was detected at Taixi(KI 3) in the first day of menstruation compared with those values in the third day after menstruation(P < 0.01)in the healthy group.On the third day after menstruation, a significant reduction in skin temperature difference was found at Zhongdu(LR 6) in PD group compared with the healthy group(P < 0.05).No significant differences of skin temperature were detected at other points(P > 0.05).CONCLUSION:The skin temperature difference at menstruation-relevant points in PD patients did not all change significantly more than those in women without PD.Significant difference was only found in Taixi(KI 3), the Yuan-source point of Kidney meridian. | She Yanfen Ma Liangxiao Zhu Jiang Qi Conghui Wang Yanxia Tang Ling Li Chunhua Yuan Hongwen Liu Yuqi Song Jiashan | 2017 | Journal of Traditional Chinese Medicine2017,37,2: | 8 |
| 7 | Altered expression of mitochondrial related genes in the native Tibetan placents by mitochondrial cDNA array analysis显示文摘Objective: To explore the mechanism of native Tibetan fetuses adaptation to hypoxia, we tried to find the different expression genes about mitochondrial function in the native Tibetan placents. Methods: In this study, the placents of native Tibetan and the high-altitude Han (ha-Han) were collected. After the total RNA extraction, the finally synthesized cDNAs were hybridized to mitochondrial array to find the altered expression genes between them. Then, the cytochrome c oxidase 17 (Cox17), dynactin 2 (DCTN2, also known as p50), and vascular endothelial growth factor receptor (VEGFR, also known as KDR) were chosen from the altered expression genes to further verify the array results using the SYBR Green real-time PCR. Because the altered expression genes (such as Cybb and Cox17) in the array results related to the activities of COXI and COXIV, the placental mitochondria activities of COXI and COXIV were measured to find their changes in the hypoxia. Results: By a standard of ≥1.5 or ≤0.67, there were 24 different expressed genes between the native Tibetan and the ha-Han placents, including 3 up-regulated genes and 21 down-regulated genes. These genes were related to energy metabolism, signal transduction, cell proliferation, electron transport, cell adhesion, nucleotide-excision repair. The array results of Cox17, DCTN2 and KDR were further verified by the real-time RT-PCR. Through the mitochondria respiration measurements, the activity of COXI in the native Tibetan placents were higher than that of ha-Han, there was no difference in COXIV activity between them. Conclusion: The altered mitochondrial related genes in the native Tibetan placents may have a role in the high altitude adaptation for fetuses through changing the activity of mitochondrial COX. | Luo Yongjun Gao Wenxiang Zhao Xiuxin SUO Lang Chen Li Liu Fuyu Song Tonglin Chen Jian Gao Yuqi | 2009 | Journal of Medical Colleges of PLA(China)2009,24,1: | 7 |
| 8 | Modeling cascading failures and mitigation strategies in PMU based cyber-physical power systems显示文摘This paper presents a model of cascading failures in cyber-physical power systems(CPPSs) based on an improved percolation theory, and then proposes failure mitigation strategies. In this model, the dynamic development of cascading failures is divided into several iteration stages. The power flow in the power grid, along with the data transmission and delay in the cyber layer, is considered in the improved percolation theory. The interaction mechanism between two layers is interpreted as the observability and controllability analysis and data update analysis influencing the node state transformation and security command execution. The resilience indices of the failures reflect the influence of cascading failures on both topological integrity and operational state. The efficacy of the proposed mitigation strategies is validated, including strategies to convert some cyber layer nodes into autonomous nodes and embed unified power flow controller(UPFC) into the physical layer. The results obtained from simulations of cascading failures in a CPPS with increasing initial failure sizes are compared for various scenarios.Dynamic cascading failures can be separated into rapid and slow processes. The interdependencies and gap between the observable and controllable parts of the physical layer with the actual physical network are two fundamental reasons for first-order transition failures. Due to the complexity of the coupled topological and operational relations between the two layers, mitigation strategies should be simultaneously applied in both layers. | Yuqi HAN Chuangxin GUO Shiying MA Dunwen SONG | 2018 | Journal of Modern Power Systems and Clean Energy2018,6,5: | 5 |
| 9 | Skull repair materials applied in cranioplasty: History and progress显示文摘The skull provides protection and mechanical support, and acts as a container for the brain and its accessory organs. Some defects in the skull can fatally threaten human life.Many efforts have been taken to repair defects in the skull, among which cranioplasty is the most prominent technique. To repair the injury, numerous natural and artificial materials have been adopted by neurosurgeons. Many cranioprostheses have been tried in the past decades, from autoplast to bioceramics. Neurosurgeons have been evaluating their advantages and shortages through clinical practice. Among those prostheses, surgeons gradually prefer bionic ones due to their marvelous osteoconductivity,osteoinductivity, biocompatibility, and biodegradability. Autogeneic bone has been widely recognized as the 'gold standard' for renovating large-sized bone defects. However, the access to this technique is restricted by limited availability and complications associated with its use. Many metal and polymeric materials with mechanical characteristics analogous to natural bones were consequently applied to cranioplasty. But most of them were unsatisfactory concerning osteoconductiion and biodegradability owe to their intrinsic properties. With the microstructures almost identical to natural bones, mineralized collagen has biological performance nearly identical to autogeneic bone, such as osteoconduction. Implants made of mineralized collagen can integrate themselves into the newly formed bones through a process called 'creeping substitution'. In this review, the authors retrospect the evolution of skull repair material applied in cranioplasty. The ultimate skull repair material should have microstructure and bioactive qualities that enable osteogenesis induction and intramembranous ossification. | Qingsheng Yu Lin Chen Zhiye Qiu Yuqi Zhang Tianxi Song Fuzhai Cui | 2017 | Translational Neuroscience and Clinics2017,3,1: | 4 |
| 10 | Separation process of butanol-butyl acetate-methyl isobutyl ketone system by the analysis to residual curve and the double effect pressure-swing distillation显示文摘The separation of ternary mixture of butanol, butyl acetate, and methyl isobutyl ketone(MIBK) was initially analyzed by the residual curve. In this process, MIBK was chosen as the azeotropic agent during the first step of separation. The optimum mass ratio of extra MIBK was 1.6 in the modified feed stream according to the residual curve. Thus on this condition the top product was butanol-MIBK azeotrope while the bottom product was butyl acetate in the preliminary separation of the mixture. Then the butanol and MIBK azeotrope was separated by the double effect pressureswing distillation with the low pressure column performing at 30 kPa and the atmospheric pressure column at 101 kPa. The optimal operating conditions were then obtained by using Aspen Plus to simulate and optimize the process. The results showed that the mass purities of butanol, butyl acetate, and MIBK were all more than 99% and reached the design requirements. Additionally, compared with the traditional distillation with outside heating, the double effect pressure swing distillation saved the reboiler duty by 48.6% and the condenser duty by 44.6%. | Chunli Li Yuanyuan Song Jing Fang Yang Liu Weiyi Su Yuqi Hu | 2017 | Chinese Journal of Chemical Engineering2017,25,3: | 4 |
| 11 | Efficient single-component white light emitting diodes enabled by lanthanide ions doped lead halide perovskites via controlling Forster energy transfer and specific defect clearance显示文摘Currently,a major challenge for metal-halide perovskite light emitting diodes(LEDs)is to achieve stable and efficient white light emission due to halide ion segregation.Herein,we report a promising method to fabricate white perovskite LEDs using lanthanide(Ln^(3+))ions doped CsPbCl_(3) perovskite nanocrystals(PeNCs).First,K^(+)ions are doped into the lattice to tune the perovskite bandgap by partially substituting Cs^(+)ions,which are well matched to the transition energy of some Ln^(3+)ions from the ground state to the excited state,thereby greatly improving the Förster energy transfer efficiency from excitons to Ln3+ions.Then,creatine phosphate(CP),a phospholipid widely found in organisms,serves as a tightly binding surface-capping multi-functional ligand which regulates the film formation and enhances the optical and electrical properties of PeNC film.Consequently,the Eu^(3+)doped PeNCs based-white LEDs show a peak luminance of 1678 cd m^(-2) and a maximum external quantum efficiency(EQE)of 5.4%,demonstrating excellent performance among existing white PeNC LEDs from a single chip.Furthermore,the method of bandgap modulation and the defect passivation were generalized to other Ln^(3+)ions doped perovskite LEDs and successfully obtained improved electroluminescence(EL).This work demonstrates the comprehensive and universal strategies in the realization of highly efficient and stable white LEDs via single-component Ln^(3+)ions doped PeNCs,which provides an optimal solution for the development of low-cost and simple white perovskite LEDs. | Rui Sun Donglei Zhou Yujiao Ding Yue Wang Yuqi Wang Xinmeng Zhuang Shuainan Liu Nan Ding Tianyuan Wang Wen Xu Hongwei Song | 2022 | Light(Science & Applications)2022,11,12: | 3 |
| 12 | Surveillance of emerging infectious diseases for biosecurity显示文摘Emerging infectious diseases, such as COVID-19, continue to pose significant threats to human beings and their surroundings. In addition, biological warfare, bioterrorism, biological accidents, and harmful consequences arising from dual-use biotechnology also pose a challenge for global biosecurity. Improving the early surveillance capabilities is necessary for building a common biosecurity shield for the global community of health for all. Furthermore, surveillance could provide early warning and situational awareness of biosecurity risks. However, current surveillance systems face enormous challenges, including technical shortages, fragmented management, and limited international cooperation. Detecting emerging biological risks caused by unknown or novel pathogens is of particular concern. Surveillance systems must be enhanced to effectively mitigate biosecurity risks. Thus, a global strategy of meaningful cooperation based on efficient integration of surveillance at all levels, including interdisciplinary integration of techniques and interdepartmental integration for effective management, is urgently needed. In this paper, we review the biosecurity risks by analyzing potential factors at all levels globally. In addition to describing biosecurity risks and their impact on global security, we also focus on analyzing the challenges to traditional surveillance and propose suggestions on how to integrate current technologies and resources to conduct effective global surveillance. | Rongzhang Hao Yuqi Liu Wanzhu Shen Rongtao Zhao Bo Jiang Hongbin Song Muyang Yan Hui Ma | 2022 | Science China(Life Sciences)2022,65,8: | 2 |
| 13 | Morphology,Chemistry and U-Pb Geochronology of Zircon Grains in Quartz Monzodiorite from the Sunzhuang Area,Fanshi County,Shanxi Province显示文摘The morphology, REE geochemistry and U-Pb geochronology of zircons from quartz monzodiorite in the Sunzhuang area, Fanshi County, Shanxi Province are presented in this study. The zircon crystals can be classified into four main types as: AB, L, S and P, and 24 subtypes such as AB4, AB5, L5, and S3. The maximum crystallization temperature of zircon was estimated as 850°C, with the minimum of 550°C. The peak temperatures of the zircon crystallization range from 650°C to 700°C. The abundances of Th and U in the zircon grains show large variation with the Th/U values > 0.4. The Th and U values also show a positive correlation in most zircons. The REE abundance of zircon in the quartz monzodiorite ranges from 280.4 ppm to 2143 ppm with an average of 856.4 ppm. The chondrite normalized zircon REE patterns show two types, one is characterized by HREE enrichment and LREE depletion with positive Ce-anomaly and negative Eu-anomaly whereas the other is HREE enriched and LREE depleted with negative Eu-anomaly but without positive Ce-anomaly, and relatively flat patterns. The LA-ICP-MS U-Pb geochronology on the zircons yields a mean age of 133±0.87 Ma. Our data on zircon morphology, composition and U-Pb geochronology reveal that the parent magma of the quartz monzodiorite which was emplaced during late Yanshanian had a mixed crust-mantle source, with crustal components dominating. The magma is inferred to have been water rich and alkaline with initial high oxygen fugacity. Post-magmatic hydrothermal activity occurred under relatively reducing conditions which was conductive for gold precipitation in the Yixingzhai gold deposit. | SONG Jiye LI Shengrong QIN Mingkuan CAI Yuqi LUO Junyan ZHANG Juquan LI Chenglu SANTOSH M. | 2015 | Acta Geologica Sinica(English Edition)2015,89,4: | 2 |
| 14 | Automated detection of parasitized Cadra cautella eggs by Trichogramma bourarachae using machine vision显示文摘Cadra(Ephestia)cautella(Walker)is a moth that attacks dates from ripening stages while on tree,throughout storage,and until consumption,causing enormous qualitative and quantitative damages,resulting in economic losses.Image-processing algorithms were developed for detecting and differentiating between three Cadra egg categories based on the success of Trichogramma bourarachae(Pintureau and Babaul)parasitization.These categories were parasitized(black and dark red),unparasitized fertile unhatched(yellow),and unparasitized hatched(white)eggs.Color,light intensity,and shape information was used to develop detection algorithms.Two image processing methods were developed based on three randomly selected images and were tested on a larger validation image set of 40 images:(i)segmentation and extractions of color and morphological features followed by Watershed delineation,and is referred to as Algorithm 1(ALGO1),(ii)finding circular objects by Hough Transformation followed by convolution filtering,and is referred to as Algorithm 2(ALGO2).ALGO1 and ALGO2 achieved correct classification rates(CCRs)for parasitized eggs of 92%and 96%,respectively.Their CCRs for unhatched eggs were 48%and 94%,and for hatched eggs were 42%and 73%,respectively.Regarding parasitized eggs,both methods performed satisfactorily,but,in general,ALGO2 outperformed ALGO1.These results ensure automatic evaluation of the efficiency of biological control of Cadra cautella by the egg parasitoid Trichogramma bourarachae by quantifying the rate of parasitization.The developed detection methods can be used by producers of biocontrol agents for online monitoring of Trichogramma and similar insect natural enemies during mass production and before release against crop pests.Moreover,with few adjustments these methods can be used in similar applications such as detecting plant diseases. | Mohammed S.El-Faki Yuqi Song Naiqian Zhang Hamadttu A.El-Shafie Pan Xin | 2018 | International Journal of Agricultural and Biological Engineering2018,11,3: | 2 |
| 15 | Role of local coordination in bimetallic sites for oxygen reduction: A theoretical analysis显示文摘Understanding of the oxygen reduction reaction(ORR)mechanism for single atom catalysts is pivotal for the rational design of non-precious metal cathode materials and the commercialization of fuel cells.Herein,a series of non-precious metal electrocatalysts based on nitrogen-doped bimetallic(Fe and Co)carbide were modeled by density functional theory calculations to predict the corresponding reaction pathways.The study elucidated prior oxygen adsorption on the Fe atom in the dual site and the modifier role of Co atoms to tune the electronic structures of Fe.The reaction activity was highly correlated with the bimetallic center and the coordination environment of the adjacent nitrogen.Interestingly,the preadsorption of*OH resulted in the apparent change of metal atoms'electronic states with the d-band center shifting toward the Fermi level,thereby boosting reaction activity.The result should help promote the fundamental understanding of active sites in ORR catalysts and provide an effective approach to the design of highly efficient ORR catalysts on an atomic scale. | Yuqi Yang Hao Zhang Zhaofeng Liang Yaru Yin Bingbao Mei Fei Song Fanfei Sun Songqi Gu Zheng Jiang Yuen Wu Zhiyuan Zhu | 2020 | Journal of Energy Chemistry2020,29,5: | 1 |
| 16 | PIMD:An Integrative Approach for Drug Repositioning Using Multiple Characterization Fusion显示文摘The accumulation of various types of drug informatics data and computational approaches for drug repositioning can accelerate pharmaceutical research and development.However,the integration of multi-dimensional drug data for precision repositioning remains a pressing challenge.Here,we propose a systematic framework named PIMD to predict drug therapeutic properties by integrating multi-dimensional data for drug repositioning.In PIMD,drug similarity networks(DSNs)based on chemical,pharmacological,and clinical data are fused into an integrated DSN(iDSN)composed of many clusters.Rather than simple fusion,PIMD offers a systematic way to annotate clusters.Unexpected drugs within clusters and drug pairs with a high iDSN similarity score are therefore identified to predict novel therapeutic uses.PIMD provides new insights into the universality,individuality,and complementarity of different drug properties by evaluating the contribution of each property data.To test the performance of PIMD,we use chemical,pharmacological,and clinical properties to generate an iDSN.Analyses of the contributions of each drug property indicate that this iDSN was driven by all data types and performs better than other DSNs.Within the top 20 recommended drug pairs,7 drugs have been reported to be repurposed.The source code for PIMD is available at http://gffzz188fe103f8f1460asvuw55bxw5ppf66oo.ffgz.tsg.suse.edu.cn/Sepstar/PIMD/. | Song He Yuqi Wen Xiaoxi Yang Zhen Liu Xinyu Song Xin Huang Xiaochen Bo | 2020 | Genomics, Proteomics & Bioinformatics2020,18,5: | 1 |
| 17 | MaterialsAtlas.org: a materials informatics web app platform for materials discovery and survey of state-of-the-art显示文摘The availability and easy access of large-scale experimental and computational materials data have enabled the emergence of accelerated development of algorithms and models for materials property prediction,structure prediction,and generative design of materials.However,the lack of user-friendly materials informatics web servers has severely constrained the wide adoption of such tools in the daily practice of materials screening,tinkering,and design space exploration by materials scientists.Herein we first survey current materials informatics web apps and then propose and develop MaterialsAtlas.org,a web-based materials informatics toolbox for materials discovery,which includes a variety of routinely needed tools for exploratory materials discovery,including material’s composition and structure validity check (e.g.charge neutrality,electronegativity balance,dynamic stability,Pauling rules),materials property prediction (e.g.band gap,elastic moduli,hardness,and thermal conductivity),search for hypothetical materials,and utility tools.These user-friendly tools can be freely accessed at http://gffzz43101ef088de40c8hvuw55bxw5ppf66oo.ffgz.tsg.suse.edu.cn argue that such materials informatics apps should be widely developed by the community to speed up materials discovery processes. | Jianjun Hu Stanislav Stefanov Yuqi Song Sadman Sadeed Omee Steph-Yves Louis Edirisuriya M.D.Siriwardane Yong Zhao Lai Wei | 2022 | npj Computational Materials2022,,1: | 1 |
| 18 | Engineering endoglucanase II form Trichoderma reesei to improve the calalylic: efficiency at a higher pH optimum 显示文摘 | Yuqi Qin Xiaomin Wei Xin Song | 2008 | Journal of Biotechnology2008,175,: | 1 |
| 19 | pH-controlled DNAzymes: Rational design and their applications in DNA-machinery devices显示文摘为在一个细微地可调节的动态范围上的分子的 biosensing 的策略的可获得性和可靠性是必要的提高重要生物过程的理解和控制。扩展 nucleic acidrelated 酶的通用性和实用程序,我们表明了一条合理途径到与能在解决方案 pH 通过一个简单变化被调节的催化活动和反应敏感获得悦耳的、 pH 依赖的 deoxyribozymes (DNAzymes ) 。做这,我们在 Hoogsteen 相互作用的 pH 依赖之上大写并且设计了能细微地在生理地相关的 pH 间隔上与高精确被调整的 i-motif- 和三重底的 DNAzymes。修改 DNAzymes 依赖于为底层的有效劈开的 pH,并且他们的催化表演能被调整插入的 i-motif/triplex 结构的顺序调节。悦耳的、 pH 依赖的 DNAzymes 的原则提供机会与崭新的敏感设计控制 pH 的 DNA 机械设备到 pH 变化。例如,我们构造了一台 DNA 行人设备,哪个能被调整由的走的率简单地在 5.6 ~ 7.4 的间隔以内的 modulating 答案 pH,以及能在 pH 被打开的一个 DNA 四面体 6.4 并且在 pH 密切注视 7.4。这条途径的潜力没被限制用作 pH 依赖的设备,但是可以相当与另外的元素被相结合扩展他们的实际实用性。 | Yuqi Chen Yanyan Song Zhiyong He Zijing Wang Wenting Liu FuanWang Xiaolian Zhang Xiang Zhou | 2016 | Nano Research2016,9,10: | 1 |
| 20 | Electrochemical Dearomative Halocyclization of Tryptamine and Tryptophol Derivatives显示文摘Summary of main observation and conclusion Owing to the easy functionalization of 3-haloindolines to many biologically active compounds,extensive efforts have been made for their efficient preparation.Herein,an electrochemical dearomative bromo-and chloro-cyclization of tryptamine and tryp-tophol derivatives has been developed under undivided electrolytic conditions.In this protocol,neither external chemical oxidants nor harsh conditions are needed,and a wide range of substituted hexahydropyrroloindolines/tetrahydrofuroindolines are obtained with halide ion in high efficiencies.Moreo-ver,this electrolysis could also be scaled up to gram synthesis with good yields. | Kun Liu Yuqi Deng Wenxu Song Chunlan Song Aiwen Lei | 2020 | Chinese Journal of Chemistry2020,38,10: | 1 |