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| 1 | CRISPR/Cas9-mediated PINK1 deletion leads to neurodegeneration in rhesus monkeys显示文摘Dear Editor,PINK1 mutations cause autosomal recessive and early-onset Parkinson’s disease(PD)with selective neurodegeneration.Unfortunately,current PINK1 knockout(KO)mouse1,2 and pig models3,4 are unable to recapitulate the selective and overt neurodegeneration seen in PD patients.Furthermore,endogenous Pink1 in the mouse brain is expressed at very low levels and can only be detected via immunoprecipitation,5 meaning that PINK1’s function in the mammalian brain needs to be assessed using larger animals that are closer to humans.We previously used CRISPR/Cas9 to target the monkey gene in one-cell stage embryos.6 Using the same approach,we designed two gRNAs to target exon 2(T1)and exon 4(T2),which encode a kinase domain in the PINK1 gene of rhesus monkeys(Fig.1a).CRISPR/Cas9 and PINK1 gRNAs were injected into one-cell stage rhesus monkey embryos.A T7E1 assay and sequencing of PCR products from the injected embryos showed high efficiency(61.5%)in targeting PINK1(Fig.1b and Supplementary information,Fig.S1).Transfer of 87 embryos to 28 surrogate rhesus monkeys resulted in 11 pregnancies(39.2%)(Fig.1b).Eleven fetuses developed to term and were born naturally.Of these live monkeys,eight carried PINK1 mutations(M),and three were wild type(WT).However,three mutant monkeys(M1,M3 and M4)were newborn triplets that struggled to survive and died 3-4 days after birth.One WT newborn monkey also died after a difficult labor.Another mutant monkey(M2)died 7 days after birth without noticeable warning signs or symptoms.The other three mutant monkeys(M6,M7 and M8)have lived for three years;M5,however,reduced its food intake and showed weakness at the age of 1.5 years,and died 30 days after anesthesia for MRI examination. | Weili Yang Yunbo Liu Zhuchi Tu Chong Xiao Sen Yan Xishan Ma Xiangyu Guo Xiusheng Chen Peng Yin Zhengyi Yang Su Yang Tianzi Jiang Shihua Li Chuan Qin Xiao-Jiang Li | 2019 | Cell Research2019,29,4: | 12 |
| 2 | Association of Overlapped and Un-overlapped Comorbidities with COVID-19 Severity and Treatment Outcomes: A Retrospective Cohort Study from Nine Provinces in China显示文摘Objective Several COVID-19 patients have overlapping comorbidities. The independent role of each component contributing to the risk of COVID-19 is unknown, and how some non-cardiometabolic comorbidities affect the risk of COVID-19 remains unclear.Methods A retrospective follow-up design was adopted. A total of 1,160 laboratory-confirmed patients were enrolled from nine provinces in China. Data on comorbidities were obtained from the patients’ medical records. Multivariable logistic regression models were used to estimate the odds ratio(OR) and 95% confidence interval(95% CI) of the associations between comorbidities(cardiometabolic or non-cardiometabolic diseases), clinical severity, and treatment outcomes of COVID-19.Results Overall, 158(13.6%) patients were diagnosed with severe illness and 32(2.7%) had unfavorable outcomes. Hypertension(2.87, 1.30–6.32), type 2 diabetes(T2 DM)(3.57, 2.32–5.49),cardiovascular disease(CVD)(3.78, 1.81–7.89), fatty liver disease(7.53, 1.96–28.96), hyperlipidemia(2.15, 1.26–3.67), other lung diseases(6.00, 3.01–11.96), and electrolyte imbalance(10.40, 3.00–26.10)were independently linked to increased odds of being severely ill. T2 DM(6.07, 2.89–12.75), CVD(8.47,6.03–11.89), and electrolyte imbalance(19.44, 11.47–32.96) were also strong predictors of unfavorable outcomes. Women with comorbidities were more likely to have severe disease on admission(5.46,3.25–9.19), while men with comorbidities were more likely to have unfavorable treatment outcomes(6.58, 1.46–29.64) within two weeks.Conclusion Besides hypertension, diabetes, and CVD, fatty liver disease, hyperlipidemia, other lung diseases, and electrolyte imbalance were independent risk factors for COVID-19 severity and poor treatment outcome. Women with comorbidities were more likely to have severe disease, while men with comorbidities were more likely to have unfavorable treatment outcomes. | MA Yan ZHU Dong Shan CHEN Ren Bo SHI Nan Nan LIU Si Hong FAN Yi Pin WU Gui Hui YANG Pu Ye BAI Jiang Feng CHEN Hong CHEN Li Ying FENG Qiao GUO Tuan Mao HOU Yong HU Gui Fen HU Xiao Mei HU Yun Hong HUANG Jin HUANG Qiu Hua HUANG Shao Zhen JI Liang JIN Hai Hao LEI Xiao LI Chun Yan LI Min Qing LI Qun Tang LI Xian Yong LIU Hong De LIU Jin Ping LIU Zhang MA Yu Ting MAO Ya MO Liu Fen NA Hui WANG Jing Wei SONG Fang Li SUN Sheng WANG Dong Ting WANG Ming Xuan WANG Xiao Yan WANG Yin Zhen WANG Yu Dong WU Wei WU Lan Ping XIAO Yan Hua XIE Hai Jun XU Hong Ming XU Shou Fang XUE Rui Xia YANG Chun YANG Kai Jun YUAN Sheng Li ZHANG Gong Qi ZHANG Jin Bo ZHANG Lin Song ZHAO Shu Sen ZHAO Wan Ying ZHENG Kai ZHOU Ying Chun ZHU Jun Teng ZHU Tian Qing ZHANG Hua Min WANG Yan Ping WANG Yong Yan 无 | 2020 | Biomedical and Environmental Sciences2020,33,12: | 8 |
| 3 | Improving the electrical performance of resistive switching memory using doping technology显示文摘In this paper, improvements of resistive random access memory (RRAM) using doping technology are summarized and analyzed. Based on a Cu/ZrO2/Pt device, three doping technologies with Ti ions, Cu, and Cu nanocrystal, respectively, are adopted in the experiments. Compared to an undoped device, improvements focus on four points: eliminating the electroforming process, reducing operation voltage, improving electrical uniformity, and increasing device yield. In addition, thermal stability of the high resistance state and better retention are also achieved by the doping technology. We demonstrate that doping technology is an effective way of improving the electrical performance of RRAM. | WANG Yan LIU Oi LU HangBing LONG ShiBing WANG Wei LI YingTao ZHANG Sen LIAN WenTai YANG JianHong LIU Ming | 2012 | Chinese Science Bulletin2012,57,11: | 6 |
| 4 | Co-regulation of indole glucosinolates and camalexin biosynthesis by CPK5/CPK6 and MPK3/MPK6 signaling pathways^°°显示文摘Secondary plant metabolites,represented by indole glucosinolates(IGS)and camalexin,play important roles in Arabidopsis immunity.Previously,we demonstrated the importance of MPK3 and MPK6,two closely related MAPKs,in regulating Botrytis cinerea(Bc)-induced IGS and camalexin biosynthesis.Here we report that CPK5 and CPK6,two redundant calcium-dependent protein kinases(CPKs),are also involved in regulating the biosynthesis of these secondary metabolites.The loss-of-function of both CPK5 and CPK6 compromises plant resistance to Be.Expression profiling of CPK5-VK transgenic plants,in which a truncated constitutively active CPK5 is driven by a steroidinducible promoter,revealed that biosynthetic genes of both IGS and camalexin pathways are coordinately upregulated after the induction of CPK5-VK,leading to high-level accumulation of camalexin and 4-methoxyindole-3-ylmethylglucosinolate(4MI3G).Induction of camalexin and 4MI3G,as well as the genes in their biosynthesis pathways,is greatly compromised in cpks cpk6 mutant in response to Be.In a conditional cpk5 cpk6 mpk3 mpk6 quadruple mutant,Be resistance and induction of IGS and camalexin are further reduced in comparison to either cpks cpk6 or conditional mpk3 mpk6 double mutant,suggesting that both CPK5/CPK6 and MPK3/MPK6 signaling pathways contribute to promote the biosynthesis of 4MI3G and camalexin in defense against Be. | Liuyi Vang Yan Zhang Rongxia Guan Sen Li Xuwen Xu Shuqun Zhang Juan Xu | 2020 | Journal of Integrative Plant Biology2020,62,11: | 6 |
| 5 | Current applications and future prospects of nanotechnology in cancer immunotherapy显示文摘Cancer immunotherapy is an artificial stimulation of the immune system to recognize cancer cells and activate specific immune cells to target and attack cancer cells.In clinical trials, immunotherapy has recently shown impressive results in the treatment of multiple cancers.Thus, cancer immunotherapy has gained a lot of attention for its unique advantages and promising future.With extensive research on cancer immunotherapy, its safety and effectiveness has gradually been revealed.However, it is still a huge challenge to expand and drive this therapy while maintaining low toxicity, high specificity, and long-lasting efficacy.As a unique technology, nanotechnology has been applied in many fields, the advantages of which will promote the development of cancer immunotherapies.Researchers have tried to apply nanomaterials to cancer immunotherapy due to their advantageous properties,such as large specific surface areas, effective drug delivery, and controlled surface chemistry, to improve treatment efficacy.Here,we briefly introduce the current applications of nanomaterials in cancer immunotherapy, including adoptive cell therapy(ACT),therapeutic cancer vaccines, and monoclonal antibodies, and throw light on future directions of nanotechnology-based cancer immunotherapy. | Sen Yan Peng Zhao Tingting Yu Ning Gu | 2019 | Cancer Biology & Medicine2019,16,3: | 6 |
| 6 | Late Paleozoic to Mesozoic extension in southwestern Fujian Province, South China: Geochemical, geochronological and Hf isotopic constraints from basic-intermediate dykes显示文摘The tectonic evolution of SE China block since late Paleozoic remains debated.Here we present a new set of zircon U-Pb geochronological,Lu-Hf isotopic data and whole-rock geochemistry for two stages of basicintermediate dykes from the southwestern Fujian.The samples were collected from the NE-trending(mainly diabases) and NW-trending(mainly diabasic diorites) dykes and yielded zircon U-Pb ages of 315 and 141 Ma,with ε_(Hf)(t) values of-8.90 to 7.49 and-23.39 to-7.15(corresponding to T_(DM2) values of 850 to 1890 Ma and 737 to 2670 Ma),respectively.Geochemically these rocks are characterized by low TiO_2(0.91-1.73 wt.%)and MgO(3.04-7.96 wt.%),and high Al_2O_3(12.5-16.60 wt.%) and K_2O(0.60-3.63 wt.%).Further they are enriched in LREEs and ULEs(Rb,Ba,Th and K).but depleted in HFSEs(Nb,Ta and Zr).The tectonic discrimination analysis revealed that the dykes were formed in an intraplate extensional environment.However,the NW trending dykes show crust-mantle mixed composition,which indicate an extensional tectonic setting with evidence for crustal contamination.The SE China block experienced two main stages of extensional tectonics from late Carboniferous to early Cretaceous.The tectonic evolution of the SE China block from late Devonian to Cretaceous is also evaluated. | Sen Wang Da Zhang Ganguo Wu Absai Vatuva Yongjun Di Pengcheng Yan Haibin Feng Shuai Ma | 2017 | Geoscience Frontiers2017,8,3: | 6 |
| 7 | Bio-inspired polygonal skeleton structure for vibration isolation:Design,modelling,and experiment显示文摘Inspired by the safe landing of a cat falling from a high altitude,a bio-inspired polygonal skeleton(BIPS) structure is proposed,and its nonlinear characteristics are systematically studied to explore its potential application in the suppression of vibration. The polygon is formed by the skeleton structure of the cat’s entire body and the ground. The BIPS system consists of two symmetrical bionic legs with three robs(as skeleton) and four horizontal springs(as muscle). Two bionic legs are connected through the bearing platform(as spine),which could adjust the distance between the two bionic legs. A theoretical model is developed to characterize its stiffness nonlinearity through geometrical and mechanical analysis. Parameter analysis reveals that the BIPS structure has diverse stiffness,including nonlinear positive stiffness and negative stiffness. By imitating adjustment of leg posture and telescopic function of the spine(control the distance between legs),these flexible stiffness properties can be adjusted by structure parameters. In addition,the load capacity and working range can also be designed by the length of the bars,the initial angle,the mounting position,and the spring stiffness. The experimental setup is established,and the vibration isolation performance under various excitation is tested. The experimental results verify the accuracy of the dynamic model and also show that the proposed BIPS structure can suppress the vibration effectively under a variety of excitations. These peculiarities may provide potential possibility of an innovative approach to passive vibration control and isolation. | YAN Ge WANG Sen ZOU HongXiang ZHAO LinChuan GAO QiuHua ZHANG WenMing | 2020 | Science China(Technological Sciences)2020,63,12: | 5 |
| 8 | AGC1.5 Kinase Phosphorylates RopGEFs to Control Pollen Tube Growth显示文摘在被子植物的两倍授精通过花粉试管要求无法移动的精子的指向的交货到卵。成长尖端的花粉试管的极性与顶端的血浆膜通过植物(ROP-GTP ) 的活跃 Rho GTPases 的动态协会被维持。为 ROP (RopGEFs ) 的 Guanine 核苷酸交换因素催化 ROP 的激活并且从而影响空间与时间的 ROP 发信号。而 RopGEFs 被发现了是 phosphorylated 蛋白质,为他们的 phosphorylation 在负责的 kinases ? vivo 和在花粉试管生长的 RopGEF phosphorylation 的生物后果仍然保持不清楚。我们这里报导细胞质的 kinases 的 Arabidopsis AGC1.5 亚科在花粉试管生长期间为 ROP-GTP 的限制本地化是批评的。AGC1.5 和 AGC1.7 功能的损失在花粉试管发信号的 ROP 下游地导致了活跃 ROP 和有缺点的事件的错误目标。AGC1.5 在容易的领域的保存重量的单位残余经由他们的催化容易的领域和 phosphorylates RopGEFs 与 RopGEFs 交往。AGC1.5 和 AGC1.7 功能的损失在花粉试管导致了 RopGEFs 的错误目标,类似于由 AGC1.5 显示 RopGEFs non-phosphorylatable 的变化引起的显型。一起,我们的结果在花粉试管的极的生长期间提供机械学的卓见进 ROP 的空间与时间的激活。 | En Li Yong Cui Fu-Rong Ge Sen Chai Wei-Tong Zhang Qiang-Nan Feng Liwen Jiang Sha Li Yan Zhang | 2018 | Molecular Plant2018,11,9: | 5 |
| 9 | Maintaining the balance of TDP-43,mitochondria,and autophagy:a promising therapeutic strategy for neurodegenerative diseases显示文摘Mitochondria are the energy center of cell operations and are involved in physiological functions and maintenance of metabolic balance and homeostasis in the body.Alterations of mitochondrial function are associated with a variety of degenerative and acute diseases.As mitochondria age in cells,they gradually become inefficient and potentially toxic Acute injury can trigger the permeability of mitochondrial membranes,which can lead to apoptosis or necrosis.Transactive response DNA-binding protein 43 kDa(TDP-43)is a protein widely present in cells.It can bind to RNA,regulate a variety of RNA processes,and play a role in the formation of multi-protein/RNA complexes.Thus,the normal physiological functions of TDP-43 are particularly important for cell survival.Normal TDP-43 is located in various subcellular structures including mitochondria,mitochondrial-associated membrane,RNA particles and stress granules to regulate the endoplasmic reticulum-mitochondrial binding,mitochondrial protein translation,and mRNA transport and translation.Importantly,TDP-43 is associated with a variety of neurodegenerative diseases,including amyotrophic lateral sclerosis,frontotemporal dementia and Alzheimer's disease,which are characterized by abnormal phosphorylation,ubiquitination,lysis or nuclear depletion of TDP-43 in neurons and glial cells.Although the pathogenesis of TDP-43 proteinopathy remains unknown,the presence of pathological TDP-43 inside or outside of mitochondria and the functional involvement of TDP-43 in the regulation of mitochondrial morphology,transport,and function suggest that mitochondria are associated with TDP-43-related diseases.Autophagy is a basic physiological process that maintains the homeostasis of cells,including targeted clearance of abnormally aggregated proteins and damaged organelles in the cytoplasm;therefore,it is considered protective against neurodegenerative diseases.However,the combination of abnormal TDP-43 aggregation,mitochondrial dysfunction,and insufficient autophagy can lead to a variety of aging-related pathologies.In this review,we describe the current knowledge on the associations of mitochondria with TDP-43 and the role of autophagy in the clearance of abnormally aggregated TDP-43 and dysfunctional mitochondria.Finally,we discuss a novel approach for neurodegenerative treatment based on the knowledge. | Chunhui Huang Sen Yan Zaijun Zhang | 2020 | Translational Neurodegeneration2020,9,4: | 5 |
| 10 | S-acylation of CBL10/SCaBP8 by PAT10 is crucial for its tonoplast association and function in salt tolerance显示文摘Protein S-acylation is a reversible posttranslational modification that involves the addition of a 16-carbon saturated lipid group,usually a palmitate group,to cysteine residues of a substrate protein(Hemsley and Grierson 2008;Hemsley et al.2013;Running 2014). | Sen Chai Fu-Rong Ge Yan Zhang Sha Li | 2020 | Journal of Integrative Plant Biology2020,62,6: | 4 |
| 11 | The journey to glory: receptor-like kinases in pollen tube growth显示文摘Double fertilization in angiosperm is a prerequisite for seed and fruit development and has been under close scrutiny in the past decades. Communications between male and female gametophytes are especially important in achieving successful reproduction, in which receptor-like kinases are dominant players. Here, we review progress on the functionality of receptor-like kinases(RLKs) in pollen tube growth and point out challenges facing the study of RLKs in pollen biology. | Sen Chai Furong Ge Sha Li Yan Zhang | 2016 | Science Bulletin2016,61,11: | 4 |
| 12 | A novel synthesis of pyrazolo[3,4-b]pyridine derivatives through multi-component reaction in ionic liquid显示文摘An efficient and novel procedure for the preparation of pyrazolo[3,4-b]pyridine derivatives through multi-component reaction of aldehyde, 5-amino-3-methyl-1-phenylpyrazole and malononitrile or cyanoacetate in [bmim][BF4] is described in this paper. Advantages of the method presented here include mild conditions, high yields together with a green nature and ease of recovery and reuse of the reaction medium. | Xin Ying Zhang Xiao Yan Li Xue Sen Fan Xia Wang Jian Ji Wang Gui Rong Qu | 2008 | Chinese Chemical Letters2008,19,2: | 3 |
| 13 | Novel magnetic silk fibroin scaffolds with delayed degradation for potential long-distance vascular repair显示文摘Although with the good biological properties,silk fibroin(SF)is immensely restrained in long-distance vascular defect repair due to its relatively fast degradation and inferior mechanical properties.It is necessary to construct a multifunctional composite scaffold based on SF.In this study,a novel magnetic SF scaffold(MSFCs)was prepared by an improved infiltration method.Compared with SF scaffold(SFC),MSFCs were found to have better crystallinity,magnetocaloric properties,and mechanical strength,which was ascribed to the rational introduction of iron-based magnetic nanoparticles(MNPs).Moreover,in vivo and in vitro experiments demonstrated that the degradation of MSFCs was significantly extended.The mechanism of delayed degradation was correlated with the dual effect that was the newly formed hydrogen bonds between SFC and MNPs and the complexing to tyrosine(Try)to inhibit hydrolase by internal iron atoms.Besides,theβ-crystallization of protein in MSFCs was increased with the rise of iron concentration,proving the beneficial effect after MNPS doped.Furthermore,although macrophages could phagocytose the released MNPs,it did not affect their function,and even a reasonable level might cause some cytokines to be upregulated.Finally,in vitro and in vivo studies demonstrated that MSFCs showed excellent biocompatibility and the growth promotion effect on CD34-labeled vascular endothelial cells(VECs).In conclusion,we confirm that the doping of MNPs can significantly reduce the degradation of SFC and thus provide an innovative perspective of multifunctional biocomposites for tissue engineering. | Xin Liu Yuxiang Sun Bo Chen Yan Li Peng Zhu Peng Wang Sen Yan Yao Li Fang Yang Ning Gu | 2022 | Bioactive Materials2022,7,1: | 3 |
| 14 | Layered MoS2@graphene functionalized with nitrogen-doped graphene quantum dots as an enhanced electrochemical hydrogen evolution catalyst显示文摘A novel three-dimensional (3D) layered MoS2@graphene functionalized with nitrogen-doped graphene quantum dots (MoS2@N-GQDs-GR) composites as an enhanced electrochemical hydrogen evolution catalyst. The few layered MoS2 nanoflowers supported on N-GQDs-GR surface were elaborately fabricated by one-pot hydrothermal method, which MoS2 and N-GQDs-GR exist in a bonding manner of Mo-N. In addition, due to the layered MoS2 sheet edge exposes more hydrogen evolution active sites and N-GQDs-GR have high conductivity, the composites exhibit prominent electrocatalytic activity with a low overpotential 99 mV, a small Tafel slope 49.3 mV/dec. Therefore, that the current work will develop HER catalysts may replace Pt. | Tong Guo Lina Wang Sen Sun Yan Wang Xiaoling Chen Kangning Zhang Dongxia Zhang Zhonghua Xue Xibin Zhou | 2019 | Chinese Chemical Letters2019,30,6: | 3 |
| 15 | NLRP3 Deficiency Attenuates Secondary Degeneration of Visual Cortical Neurons Following Optic Nerve Injury显示文摘In the visual pathway, optic nerve(ON) injury may cause secondary degeneration of neurons in distal regions, such as the visual cortex. However, the role of the neuroinflammatory response in regulating secondary impairment in the visual cortex after ON injury remains unclear. The NOD-like receptor family pyrin domain containing 3(NLRP3) is an important regulator of neuroinflammation. In this study, we established a mouse model of unilateral ON crush(ONC) and showed that the expression of NLRP3 was significantly increased in the primary visual cortex(V1) as a response to ONC and that the NLRP3 inflammasome was activated in the contralateral V1 1 days–14 days after ONC. Ablation of the NLRP3 gene significantly decreased the trans-neuronal degeneration within 14 days. Visual electrophysiological function was improved in NLRP3-/- mice. Taken together, these findings suggest that NLRP3 is a potential therapeutic target for protecting visual cortical neurons against degeneration after ON injury. | Zhou Zhang Wenyi Liu Yubin Huang Linlin Luo Xiaofeng Cai Yunjia Liu Liqianyu Ai Jun Yan Sen Lin Jian Ye | 2020 | Neuroscience Bulletin2020,36,3: | 3 |
| 16 | PINK1 kinase dysfunction triggers neurodegeneration in the primate brain without impacting mitochondrial homeostasis显示文摘In vitro studies have established the prevalent theory that the mitochondrial kinase PINK1 protects neurodegeneration by removing damaged mitochondria in Parkinson's disease(PD).However,difficulty in detecting endogenous PINK1 protein in rodent brains and cell lines has prevented the rigorous investigation of the in vivo role of PINK1.Here we report that PINK1 kinase form is selectively expressed in the human and monkey brains.CRISPR/Cas9-mediated deficiency of PINK1 causes similar neurodegeneration in the brains of fetal and adult monkeys as well as cultured monkey neurons without affecting mitochondrial protein expression and morphology.Importantly,PINK1 mutations in the primate brain and human cells reduce protein phosphorylation that is important for neuronal function and survival.Our findings suggest that PINK1 kinase activity rather than its mitochondrial function is essential for the neuronal survival in the primate brains and that its kinase dysfunction could be involved in the pathogenesis of PD. | Weili Yang Xiangyu Guo Zhuchi Tu Xiusheng Chen Rui Han Yanting Liu Sen Yan Qi Wang Zhifu Wang Xianxian Zhao Yunpeng Zhang Xin Xiong Huiming Yang Peng Yin Huida Wan Xingxing Chen Jifeng Guo Xiao-Xin Yan Lujian Liao Shihua Li Xiao-Jiang Li | 2022 | Protein & Cell2022,13,1: | 3 |
| 17 | Projections from D2 Neurons in Different Subregions of Nucleus Accumbens Shell to Ventral Pallidum Play Distinct Roles in Reward and Aversion显示文摘The nucleus accumbens shell(NAcSh) plays an important role in reward and aversion. Traditionally, NAc dopamine receptor 2-expressing(D2) neurons are assumed to function in aversion. However, this has been challenged by recent reports which attribute positive motivational roles to D2 neurons. Using optogenetics and multiple behavioral tasks, we found that activation of D2 neurons in the dorsomedial NAcSh drives preference and increases the motivation for rewards, whereas activation of ventral NAcSh D2 neurons induces aversion. Stimulation of D2 neurons in the ventromedial NAcSh increases movement speed and stimulation of D2 neurons in the ventrolateral NAc Sh decreases movement speed. Combining retrograde tracing and in situ hybridization, we demonstrated that glutamatergic and GABAergic neurons in the ventral pallidum receive inputs differentially from the dorsomedial and ventral NAcSh. All together, these findings shed light on the controversy regarding the function of NAcSh D2 neurons, and provide new insights into understanding the heterogeneity of the NAcSh. | Yun Yao Ge Gao Kai Liu Xin Shi Mingxiu Cheng Yan Xiong Sen Song | 2021 | Neuroscience Bulletin2021,37,5: | 3 |
| 18 | PECS: Towards Personalized Edge Caching for Future Service-Centric Networks显示文摘Mobile operators face the challenge of how to best design a service-centric network that can effectively process the rapidly increasing number of bandwidth-intensive user requests while providing a higher quality of experience(QoE). Existing content distribution networks(CDN) and mobile content distribution networks(mCDN) have both latency and throughput limitations due to being multiple network hops away from end-users. Here, we first propose a new Personalized Edge Caching System(PECS) architecture that employs big data analytics and mobile edge caching to provide personalized service access at the edge of the mobile network. Based on the proposed system architecture, the edge caching strategy based on user behavior and trajectory is analyzed. Employing our proposed PECS strategies, we use data mining algorithms to analyze the personalized trajectory and service usage patterns. Our findings provide guidance on how key technologies of PECS can be employed for current and future networks. Finally, we highlight the challenges associated with realizing such a system in 5G and beyond. | Ming Yan Wenwen Li Chien Aun Chan Sen Bian Chih-Lin I André F. Gygax | 2019 | China Communications2019,16,8: | 3 |
| 19 | Oasis Functional Stability Evaluation Based on Multiple Indicators, Northwest China显示文摘We produced and analyzed oasis structure information, and evaluated oasis functional stability using the multiple indicators based on Remote Sensing(RS) and Geographical Information System(GIS) in the arid region of China in 2015. The results showed that the oases area was 193,734 km^2, accounting for 8.17% of the arid region of China. The spatial difference in the functional stability of oases was obvious. The Beijiang zone had the highest functional stability and was relatively stable state, and the Hexi Corridor-Alashan Plateau zone had the lowest functional stability and was relatively unstable. The functional stability is dominated by production and ecological functions, which have regional differences. Increasing oasis agricultural output, strengthening highway infrastructure construction and paying attention to education will become important ways to improve oasis functional stability. Water resources determine the ecological function, thus affecting the oasis functional stability. The results provide references for the formulation of related policies according to local conditions. | LI Sen ZHANG Zhishan WANG Tao YAN Changzhen DU Heqiang | 2020 | Acta Geologica Sinica(English Edition)2020,94,3: | 3 |
| 20 | Hole quality in longitudinal–torsional coupled ultrasonic vibration assisted drilling of carbon fiber reinforced plastics显示文摘Carbon fiber reinforced plastic (CFRP) composites are extremely attractive in the manufacturing of structural and functional components in the aircraft manufacturing field due to their outstanding properties, such as good fatigue resistance, high specific stiffness/strength, and good shock absorption. However, because of their inherent anisotropy, low interlamination strength, and abrasive characteristics, CFRP composites are considered difficult-to-cut materials and are prone to generating serious hole defects, such as delamination, tearing, and burrs. The advanced longitudinal–torsional coupled ultrasonic vibration assisted drilling (LTC-UAD) method has a potential application for drilling CFRP composites. At present, LTC-UAD is mainly adopted for drilling metal materials and rarely for CFRP. Therefore, this study analyzes the kinematic characteristics and the influence of feed rate on the drilling performance of LTC-UAD. Experimental results indicate that LTC-UAD can reduce the thrust force by 39% compared to conventional drilling. Furthermore, LTC-UAD can decrease the delamination and burr factors and improve the surface quality of the hole wall. Thus, LTC-UAD is an applicable process method for drilling components made with CFRP composites. | Guofeng MA Renke KANG Zhigang DONG Sen YIN Yan BAO Dongming GUO | 2020 | Frontiers of Mechanical Engineering2020,15,4: | 3 |