期刊文献+
共找到11篇文章
< 1 >
每页显示 20 50 100
Assessing Micro-generation's and Non-linear Loads' Impact in the Power Quality of Low Voltage Distribution Networks
1
作者 Paulo Bonifacio Susana Viana +1 位作者 Luis Rodrigues Ana Estanqueiro 《Journal of Energy and Power Engineering》 2013年第12期2321-2335,共15页
Distribution networks face an increasing penetration of solar PV (photovoltaic) and small WTG (wind turbine generator) as well as other forms of micro-generation. To this scenario, one must add the dissemination o... Distribution networks face an increasing penetration of solar PV (photovoltaic) and small WTG (wind turbine generator) as well as other forms of micro-generation. To this scenario, one must add the dissemination of non-linear loads such as EV (electric vehicles). There is something in common between those loads and sources: the extensive use of power electronic converters with commutated switches. These devices may be a source of medium-to-high frequency harmonic distortion and their impact on the local distribution grid must be carefully assessed in order to evaluate their negative impacts on the network, on the existing conventional loads and also on other active devices. In this paper, methodologies to characterize effects such as: harmonics, network unbalances, damaging power line resonance conditions, and over/under voltages are described and applied to a real local grid configuration. 展开更多
关键词 MICRO-GENERATION distribution network power quality HARMONICS smart grid electric vehicle.
在线阅读 下载PDF
Revolutionizing treatment for disorders of consciousness:a multidisciplinary review of advancements in deep brain stimulation
2
作者 Yi Yang Tian-Qing Cao +14 位作者 Sheng-Hong He Lu-Chen Wang Qi-Heng He Ling-Zhong Fan Yong-Zhi Huang Hao-Ran Zhang Yong Wang Yuan-Yuan Dang Nan Wang Xiao-Ke Chai Dong Wang Qiu-Hua Jiang Xiao-Li Li Chen Liu Shou-Yan Wang 《Military Medical Research》 2025年第10期1542-1566,共25页
Among the existing research on the treatment of disorders of consciousness(DOC),deep brain stimulation(DBS)offers a highly promising therapeutic approach.This comprehensive review documents the historical development ... Among the existing research on the treatment of disorders of consciousness(DOC),deep brain stimulation(DBS)offers a highly promising therapeutic approach.This comprehensive review documents the historical development of DBS and its role in the treatment of DOC,tracing its progression from an experimental therapy to a detailed modulation approach based on the mesocircuit model hypothesis.The mesocircuit model hypothesis suggests that DOC arises from disruptions in a critical network of brain regions,providing a framework for refining DBS targets.We also discuss the multimodal approaches for assessing patients with DOC,encompassing clinical behavioral scales,electrophysiological assessment,and neuroimaging techniques methods.During the evolution of DOC therapy,the segmentation of central nuclei,the recording of single-neurons,and the analysis of local field potentials have emerged as favorable technical factors that enhance the efficacy of DBS treatment.Advances in computational models have also facilitated a deeper exploration of the neural dynamics associated with DOC,linking neuron-level dynamics with macroscopic behavioral changes.Despite showing promising outcomes,challenges remain in patient selection,precise target localization,and the determination of optimal stimulation parameters.Future research should focus on conducting large-scale controlled studies to delve into the pathophysiological mechanisms of DOC.It is imperative to further elucidate the precise modulatory effects of DBS on thalamo-cortical and cortico-cortical functional connectivity networks.Ultimately,by optimizing neuromodulation strategies,we aim to substantially enhance therapeutic outcomes and greatly expedite the process of consciousness recovery in patients. 展开更多
关键词 Deep brain stimulation(DBS) Disorders of consciousness(DOC) Segmentation of thalamic nuclei Local field potentials Computational modeling
原文传递
Recent applications of EEG-based brain-computer-interface in the medical field 被引量:8
3
作者 Xiu-Yun Liu Wen-Long Wang +39 位作者 Miao Liu Ming-Yi Chen Tânia Pereira Desta Yakob Doda Yu-Feng Ke Shou-Yan Wang Dong Wen Xiao-Guang Tong Wei-Guang Li Yi Yang Xiao-Di Han Yu-Lin Sun Xin Song Cong-Ying Hao Zi-Hua Zhang Xin-Yang Liu Chun-Yang Li Rui Peng Xiao-Xin Song Abi Yasi Mei-Jun Pang Kuo Zhang Run-Nan He Le Wu Shu-Geng Chen Wen-Jin Chen Yan-Gong Chao Cheng-Gong Hu Heng Zhang Min Zhou Kun Wang Peng-Fei Liu Chen Chen Xin-Yi Geng Yun Qin Dong-Rui Gao En-Ming Song Long-Long Cheng Xun Chen Dong Ming 《Military Medical Research》 2025年第8期1283-1322,共40页
Brain-computer interfaces(BCIs)represent an emerging technology that facilitates direct communication between the brain and external devices.In recent years,numerous review articles have explored various aspects of BC... Brain-computer interfaces(BCIs)represent an emerging technology that facilitates direct communication between the brain and external devices.In recent years,numerous review articles have explored various aspects of BCIs,including their fundamental principles,technical advancements,and applications in specific domains.However,these reviews often focus on signal processing,hardware development,or limited applications such as motor rehabilitation or communication.This paper aims to offer a comprehensive review of recent electroencephalogram(EEG)-based BCI applications in the medical field across 8 critical areas,encompassing rehabilitation,daily communication,epilepsy,cerebral resuscitation,sleep,neurodegenerative diseases,anesthesiology,and emotion recognition.Moreover,the current challenges and future trends of BCIs were also discussed,including personal privacy and ethical concerns,network security vulnerabilities,safety issues,and biocompatibility. 展开更多
关键词 Brain-computer interfaces(BCIs) Medical applications REHABILITATION COMMUNICATION Brain monitoring DIAGNOSIS
原文传递
Combating Climate Change Through Scratch Card Waste Management
4
作者 Margaret Akinyi Demba Minai Okach Joshua 《地学前缘》 EI CAS CSCD 北大核心 2009年第S1期99-100,共2页
One of the most challenging anthropogenic activities that have driven climate change off the edge is deforestation.Increased human populations have exerted a lot of pressure on natural forests due to the increased dem... One of the most challenging anthropogenic activities that have driven climate change off the edge is deforestation.Increased human populations have exerted a lot of pressure on natural forests due to the increased demand of resources—one of which is paper.An example of this effect is the increased usage of mobile phone scratch cards made out of paper that most of the population in Africa use to top-up 展开更多
关键词 DEFORESTATION climate change RECYCLING paper scratch-cards students
在线阅读 下载PDF
An Edge-Based Approach for Semantic Matchmaking of Service Capabilities
5
作者 Adala Asma Tabbane Nabil Tabbane Sami 《Computer Technology and Application》 2011年第8期667-673,共7页
Semantic Web Services is an emerging technology that promises to enable dynamic, execution-time discovery, composition, and invocation of Web Services. Semantic matchmaking plays a vital role in the automated and dyna... Semantic Web Services is an emerging technology that promises to enable dynamic, execution-time discovery, composition, and invocation of Web Services. Semantic matchmaking plays a vital role in the automated and dynamic discovery process of Semantic Web Services and consists in measuring the semantic distance between a requested service and an advertised one. In this paper, an innovative approach to effectively compute the semantic distance between Ontology Web Language for Services (OWL-S) annotated services is proposed. First, an edge-based method for measuring the semantic distance between Web Ontology Language (OWL) concepts is presented. Then, a comparison of the proposed measure and the one presented in a recent related work is made in order to show that our method is more efficient and fine-grained. Finally, some equations to compute semantic matchmaking of service capabilities, which are expressed in terms of inputs and outputs, are presented. 展开更多
关键词 Semantic web semantic web service semantic distance MATCHMAKING service discovery OWL-S (ontology web language for services) ontology.
在线阅读 下载PDF
Low-energy electronic states of carbon nanocones in an electric field
6
作者 Jun-Liang Chen Ming-Horng Su +2 位作者 Chi-Chuan Hwang Jian-Ming Lu Chia-Chang Tsai 《Nano-Micro Letters》 SCIE EI CAS 2010年第2期121-125,共5页
The low-energy electronic states and energy gaps of carbon nanocones in an electric field are studied using a single-?-band tight-binding model. The analysis considers five perfect carbon nanocones with disclination a... The low-energy electronic states and energy gaps of carbon nanocones in an electric field are studied using a single-?-band tight-binding model. The analysis considers five perfect carbon nanocones with disclination angles of 60°, 120°, 180°, 240° and 300°, respectively. The numerical results reveal that the low-energy electronic states and energy gaps of a carbon nanocones are highly sensitive to its geometric shape(i.e. the disclination angle and height), and to the direction and magnitude of an electric field. The electric field causes a strong modulation of the state energies and energy gaps of the nanocones, changes their Fermi levels, and induces zero-gap transitions. The energy-gap modulation effect becomes particularly pronounced at higher strength of the applied electric field, and is strongly related to the geometric structure of the nanocone. 展开更多
关键词 Low-energy electronic states Carbon Nanocones Electric field
在线阅读 下载PDF
Enhancer transcription profiling reveals an enhancer RNA-driven ferroptosis and new therapeutic opportunities in prostate cancer
7
作者 Sheng Ma Zixian Wang +18 位作者 Zezhong Xiong Yue Ge Meng-Yao Xu Junbiao Zhang Yuzheng Peng Qin Zhang Jiaxue Sun Zirui Xi Hao Peng Wenjie Xu Yanan Wang Le Li Chunyu Zhang Zheng Chao Baojun Wang Xu Gao Xu Zhang Gong-Hong Wei Zhihua Wang 《Signal Transduction and Targeted Therapy》 2025年第4期2354-2374,共21页
Enhancer RNAs(eRNAs),a subclass of non-coding RNAs transcribed from enhancer regions,have emerged as critical regulators of gene expression;however,their functional roles in prostate cancer remain largely unexplored.I... Enhancer RNAs(eRNAs),a subclass of non-coding RNAs transcribed from enhancer regions,have emerged as critical regulators of gene expression;however,their functional roles in prostate cancer remain largely unexplored.In this study,we performed integrated chromatin accessibility and transcriptomic analyses using ATAC-seq and RNA-seq on twenty pairs of prostate cancer and matched benign tissues.By incorporating chromatin immunoprecipitation sequencing data,we identified a subset of differentially expressed eRNAs significantly associated with genes involved in prostate development and oncogenic signaling pathways.Among these,lactotransferrin-eRNA(LTFe)was markedly downregulated in prostate cancer tissues,with functional analyses revealing its tumor-suppressive role.Mechanistically,LTFe promotes the transcription of its target gene,lactotransferrin(LTF),by interacting with heterogeneous nuclear ribonucleoprotein F(HNRNPF)and facilitating enhancer-promoter chromatin interactions.Furthermore,we demonstrate that the LTFe-LTF axis facilitates ferroptosis by modulating iron transport.Notably,androgen receptor(AR)signaling disrupts LTFe-associated chromatin looping,leading to ferroptosis resistance.Therapeutically,co-administration of the AR inhibitor enzalutamide and the ferroptosis inducer RSL3 significantly suppressed tumor growth,offering a promising strategy for castrationresistant prostate cancer.Collectively,this study provides novel insights into the mechanistic role of eRNAs in prostate cancer,highlighting the LTFe-LTF axis as a critical epigenetic regulator and potential therapeutic target for improved treatment outcomes. 展开更多
关键词 prostate cancer Lactotransferrin erna enhancer rnas ernas chromatin immunoprecipitation sequencing datawe benign tissuesby enhancer RNAs Ferroptosis integrated chromatin accessibility transcriptomic analyses
暂未订购
Single-lane 200 Gbit/s photonic wireless transmission of multicarrier 64-QAM signals at 300 GHz over 30 m 被引量:1
8
作者 张红旗 张鹿 +5 位作者 杨作民 杨航 吕治东 庞晓丹 Oskars Ozolins 余显斌 《Chinese Optics Letters》 SCIE EI CAS CSCD 2023年第2期138-142,共5页
Recently,wireless communication capacity has been witnessing unprecedented growth.Benefits from the optoelectronic components with large bandwidth,photonics-assisted terahertz(THz)communication links have been extensi... Recently,wireless communication capacity has been witnessing unprecedented growth.Benefits from the optoelectronic components with large bandwidth,photonics-assisted terahertz(THz)communication links have been extensively developed to accommodate the upcoming wireless transmission with a high data rate.However,limited by the available signalto-noise ratio and THz component bandwidth,single-lane transmission of beyond 100 Gbit/s data rate using a single pair of THz transceivers is still very challenging.In this study,a multicarrier THz photonic wireless communication link in the 300 GHz band is proposed and experimentally demonstrated.Enabled by subcarrier multiplexing,spectrally efficient modulation format,well-tailored digital signal processing routine,and broadband THz transceivers,a line rate of 72 Gbit/s over a wireless distance of 30 m is successfully demonstrated,resulting in a total net transmission capacity of up to 202.5 Gbit/s.The single-lane transmission of beyond 200 Gbit/s overall data rate with a single pair of transceivers at 300 GHz is considered a significant step toward a viable photonics-assisted solution for the next-generation information and communication technology (ICT) infrastructure. 展开更多
关键词 terahertz communication terahertz photonics wavelength division multiplexing photonic-wireless transmission
原文传递
Private communication with photonic terahertz chaos 被引量:1
9
作者 Qiuzhuo Deng Lu Zhang +3 位作者 Zhidong Lyu Xiaodan Pang Oskars Ozolins Xianbin Yu 《Advanced Photonics》 CSCD 2024年第6期80-89,共10页
Terahertz(THz)communications are vulnerable to eavesdropping due to their scattering and diffraction properties,which limits their practical deployment.We propose a photonic THz chaos encryption and synchronization sc... Terahertz(THz)communications are vulnerable to eavesdropping due to their scattering and diffraction properties,which limits their practical deployment.We propose a photonic THz chaos encryption and synchronization scheme to secure THz communications.We experimentally demonstrate the generation,encryption,and wireless transmission of a 5 Gbit∕s non-return-to-zero signal at 120 GHz using flexible photonic THz chaos.In addition,we achieve high-quality chaos synchronization with a neural network,attaining a correlation coefficient of up to 90.6%.This scheme offers a viable solution for secure THz communications,showing significant potential for enhancing wireless communication privacy. 展开更多
关键词 physical layer security private communication THz photonics THz chaos encryption THz chaos synchronization
原文传递
Cross-Frequency Coupling and Intelligent Neuromodulation
10
作者 Chien-Hung Yeh Chuting Zhang +3 位作者 Wenbin Shi Men-Tzung Lo Gerd Tinkhauser Ashwini Oswal 《Cyborg and Bionic Systems》 EI CAS 2023年第1期284-297,共14页
Cross-frequency coupling(CFC)reflects(nonlinear)interactions between signals of different frequencies.Evidence from both patient and healthy participant studies suggests that CFC plays an essential role in neuronal co... Cross-frequency coupling(CFC)reflects(nonlinear)interactions between signals of different frequencies.Evidence from both patient and healthy participant studies suggests that CFC plays an essential role in neuronal computation,interregional interaction,and disease pathophysiology.The present review discusses methodological advances and challenges in the computation of CFC with particular emphasis on potential solutions to spurious coupling,inferring intrinsic rhythms in a targeted frequency band,and causal interferences.We specifically focus on the literature exploring CFC in the context of cognition/memory tasks,sleep,and neurological disorders,such as Alzheimer's disease,epilepsy,and Parkinson's disease.Furthermore,we highlight the implication of CFC in the context and for the optimization of invasive and noninvasive neuromodulation and rehabilitation.Mainly,CFC could support advancing the understanding of the neurophysiology of cognition and motor control,serve as a biomarker for disease symptoms,and leverage the optimization of therapeutic interventions,e.g.,closed-loop brain stimulation.Despite the evident advantages of CFC as an investigative and translational tool in neuroscience,further methodological improvements are required to facilitate practical and correct use in cyborg and bionic systems in the field. 展开更多
关键词 EPILEPSY SPITE evident
原文传递
Epigenetic reader ZMYND11 noncanonical function restricts HNRNPA1-mediated stress granule formation and oncogenic activity 被引量:1
11
作者 Cheng Lian Chunyi Zhang +13 位作者 Pan Tian Qilong Tan Yu Wei Zixian Wang Qin Zhang Qixiang Zhang Mengjie Zhong Li-Quan Zhou Xisong Ke Huabing Zhang Yao Zhu Zhenfei Li Jingdong Cheng Gong-Hong Wei 《Signal Transduction and Targeted Therapy》 SCIE CSCD 2024年第10期4708-4729,共22页
Epigenetic readers frequently affect gene regulation,correlate with disease prognosis,and hold significant potential as therapeutic targets for cancer.Zinc finger MYND-type containing 11(ZMYND11)is notably recognized ... Epigenetic readers frequently affect gene regulation,correlate with disease prognosis,and hold significant potential as therapeutic targets for cancer.Zinc finger MYND-type containing 11(ZMYND11)is notably recognized for reading the epigenetic marker H3.3K36me3;however,its broader functions and mechanisms of action in cancer remain underexplored.Here,we report that ZMYND11 downregulation is prevalent across various cancers and profoundly correlates with poorer outcomes in prostate cancer patients.Depletion of ZMYND11 promotes tumor cell growth,migration,and invasion in vitro,as well as tumor formation and metastasis in vivo.Mechanistically,we discover that ZMYND11 exhibits tumor suppressive roles by recognizing arginine-194-methylated HNRNPA1 dependent on its MYND domain,thereby retaining HNRNPA1 in the nucleus and preventing the formation of stress granules in the cytoplasm.Furthermore,ZMYND11 counteracts the HNRNPA1-driven increase in the PKM2/PKM1 ratio,thus mitigating the aggressive tumor phenotype promoted by PKM2.Remarkably,ZMYND11 recognition of HNRNPA1 can be disrupted by pharmaceutical inhibition of the arginine methyltransferase PRMT5.Tumors with low ZMYND11 expression show sensitivity to PRMT5 inhibitors.Taken together,our findings uncover a previously unexplored noncanonical role of ZMYND11 as a nonhistone methylation reader and underscore the critical importance of arginine methylation in the ZMYND11-HNRNPA1 interaction for restraining tumor progression,thereby proposing novel therapeutic targets and potential biomarkers for cancer treatment. 展开更多
关键词 INVASION thereby STRESS
暂未订购
上一页 1 下一页 到第
使用帮助 返回顶部