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| 1 | Towards 6G wireless communication networks:vision,enabling technologies,and new paradigm shifts显示文摘The fifth generation(5G)wireless communication networks are being deployed worldwide from 2020 and more capabilities are in the process of being standardized,such as mass connectivity,ultra-reliability,and guaranteed low latency.However,5G will not meet all requirements of the future in 2030 and beyond,and sixth generation(6G)wireless communication networks are expected to provide global coverage,enhanced spectral/energy/cost efficiency,better intelligence level and security,etc.To meet these requirements,6G networks will rely on new enabling technologies,i.e.,air interface and transmission technologies and novel network architecture,such as waveform design,multiple access,channel coding schemes,multi-antenna technologies,network slicing,cell-free architecture,and cloud/fog/edge computing.Our vision on 6G is that it will have four new paradigm shifts.First,to satisfy the requirement of global coverage,6G will not be limited to terrestrial communication networks,which will need to be complemented with non-terrestrial networks such as satellite and unmanned aerial vehicle(UAV)communication networks,thus achieving a space-airground-sea integrated communication network.Second,all spectra will be fully explored to further increase data rates and connection density,including the sub-6GHz,millimeter wave(mmWave),terahertz(THz),and optical frequency bands.Third,facing the big datasets generated by the use of extremely heterogeneous networks,diverse communication scenarios,large numbers of antennas,wide bandwidths,and new service requirements,6G networks will enable a new range of smart applications with the aid of artificial intelligence(AI)and big data technologies.Fourth,network security will have to be strengthened when developing 6G networks.This article provides a comprehensive survey of recent advances and future trends in these four aspects.Clearly,6G with additional technical requirements beyond those of 5G will enable faster and further communications to the extent that the boundary between physical and cyber worlds disappears. | Xiaohu YOU Cheng-Xiang WANG Jie HUANG Xiqi GAO Zaichen ZHANG Mao WANG Yongming HUANG Chuan ZHANG Yanxiang JIANG Jiaheng WANG Min ZHU Bin SHENG Dongming WANG Zhiwen PAN Pengcheng ZHU Yang YANG Zening LIU Ping ZHANG Xiaofeng TAO Shaoqian LI Zhi CHEN Xinying MA Chih-Lin I Shuangfeng HAN Ke LI Chengkang PAN Zhimin ZHENG Lajos HANZO Xuemin(Sherman)SHEN Yingjie Jay GUO Zhiguo DING Harald HAAS Wen TONG Peiying ZHU Ganghua YANG Jun WANG Erik GLARSSON Hien Quoc NGO Wei HONG Haiming WANG Debin HOU Jixin CHEN Zhe CHEN Zhangcheng HAO Geoffrey Ye LI Rahim TAFAZOLLI Yue GAO HVincent POOR Gerhard P.FETTWEIS Ying-Chang LIANG | 2021 | Science China(Information Sciences)2021,64,1: | 122 |
| 2 | 术前肌电图和脑干听觉诱发电位与面肌痉挛微血管减压术后迟发性面瘫发生的关系(英文)显示文摘Background Delayed facial palsy ( DFP) after microvascular decompression ( MVD) in patients with hemifacial spasm ( HFS) is not uncommon,but the cause remains unknown. Objectives To assess whether intraoperative electromyography ( EMG) and brainstem auditory evoked potential ( BAEP) can predict DFP after MVD. Methods Between September 2009 and February 2011 we examined 86 patients,9 of whom ( 10. 4% ) developed DFP after MVD on the same side. All patients underwent MVD and were followed - up for a median period of 13 months ( range 6-22) . We retrospectively examined intraoperative facial EMG and BAEP findings using our MVD patients' registry. We excluded secondary HFS and immediate postoperative facial palsy after MVD in this study. We assessed the prevalence and clinical characteristics of DFP and compared EMG and BAEP findings between DFP and non-DFP groups. Results: All pa- tients recovered completely,with a mean time to recovery of 37. 8 days ( range 22-57) . There were no significant differences between DFP and non - DFP patients in terms of the amplitude and latency of intraoperative EMG and BAEP. Conclusion The usefulness of intraoperative facial EMG and BAEP is limited and cannot predict DFP after MVD for HFS. We speculate that DFP after MVD is not associated with permanent nerve damage according to the EMG findings. | Kim HJ Park YS Ryu JS Huh R Han I Shin DA Kim TG Cho KG Chung SS | 2012 | 中华神经外科疾病研究杂志2012,11,4: | 13 |
| 3 | Dietary and metabolomic determinants of relapse in ulcerative colitis patients: A pilot prospective cohort study显示文摘AIM To identify demographic, clinical, metabolomic, and lifestyle related predictors of relapse in adult ulcerative colitis(UC) patients.METHODS In this prospective pilot study, UC patients in clinical remission were recruited and followed-up at 12 mo to assess a clinical relapse, or not. At baseline information on demographic and clinical parameters was collected. Serum and urine samples were collected for analysis of metabolomic assays using a combined direct infusion/liquid chromatography tandem mass spectrometry and nuclear magnetic resolution spectroscopy. Stool samples were also collected to measure fecal calprotectin(FCP). Dietary assessment was performed using a validated self-administered food frequency questionnaire. RESULTS Twenty patients were included(mean age: 42.7 ± 14.8 years, females: 55%). Seven patients(35%) experienced a clinical relapse during the follow-up period. While 6 patients(66.7%) with normal body weight developed a clinical relapse, 1 UC patient(9.1%) who was overweight/obese relapsed during the follow-up(P = 0.02). At baseline, poultry intake was significantly higher in patients who were still in remission during follow-up(0.9 oz vs 0.2 oz, P = 0.002). Five patients(71.4%) with FCP > 150 μg/g and 2 patients(15.4%) with normal FCP(≤ 150 μg/g) at baseline relapsed during the follow-up(P = 0.02). Interestingly, baseline urinary and serum metabolomic profiling of UC patients with or without clinical relapse within 12 mo showed a significant difference. The most important metabolites that were responsible for this discrimination were trans-aconitate, cystine and acetamide in urine, and 3-hydroxybutyrate, acetoacetate and acetone in serum. CONCLUSION A combination of baseline dietary intake, fecal calprotectin, and metabolomic factors are associated with risk of UC clinical relapse within 12 mo. | Ammar Hassanzadeh Keshtel iFloris F van den Brand Karen L Madsen Rupasri Mandal Rosica ValchevaKaren I Kroeker Beomsoo Han Rhonda C Bell Janis Cole Thomas Hoevers David S Wishart Richard N Fedorak Levinus A Dieleman | 2017 | World Journal of Gastroenterology2017,23,21: | 9 |
| 4 | Liver transplantation for malignancy:current treatment strategies and future perspectives显示文摘In 1967,Starzl et al performed the first successful liver transplantation for a patient diagnosed with hepatoblastoma.In the following,liver transplantation was considered ideal for complete tumor resection and potential cure from primary hepatic malignancies.Several reports of liver transplantation for primary and metastatic liver cancer however showed disappointing results and the strategy was soon dismissed.In1996,Mazzaferro et al introduced the Milan criteria,offering liver transplantation to patients diagnosed with limited hepatocellular carcinoma.Since then,liver transplantation for malignant disease is an ongoing subject of preclinical and clinical research.In this context,several aspects must be considered:(1)Given the shortage of deceased-donor organs,long-term overall and disease free survival should be comparable with results obtained in patients transplanted for nonmalignant disease;(2)In this regard,living-donor liver transplantation may in selected patients help to solve the ethical dilemma of optimal individual patient treatment vs organ allocation justice;and(3)Ongoing research focusing on perioperative therapy and antiproliferative immunosuppressive regimens may further reduce tumor recurrence in patients transplanted for malignant disease and thus improve overall survival.The present review gives an overview of current indications and future perspectives of liver transplantation for malignant disease. | Christina Hackl Hans J Schlitt Gabriele I Kirchner Birgit Knoppke Martin Loss | 2014 | World Journal of Gastroenterology2014,20,18: | 7 |
| 5 | Reelin induces EphB activation显示文摘进功能的 neuronal 网络的新生的神经原的集成在 neuronal 进程和与另外的神经原的 synaptic 接触的形成的发展中的大脑,生长和树枝状要求房间的移植到他们的最后的位置。在协调区别事件的这个复杂序列的信号之中的一个中央播放器是分泌 glycoprotein Reelin,它也调制 synaptic 粘性,学习并且在成年大脑的记忆形成。到 ApoER2 和 VLDL 受体的 Reelin 有约束力, LDL 受体家庭的二个成员,开始包含细胞内部的细胞质的适配器蛋白质 Disabled-1 的酷氨酸 phosphorylation 的发信号的串联,它指向 neuronal 细胞骨架并且最终控制在整个发展中的大脑放神经原。然而, Reelin 信号与另外的调停受体的发信号串联交往调整大脑开发和粘性的不同方面,是可能的。EphB 酷氨酸 kinases 经由通过 ephrin B transmembrane 蛋白质的双向发信号调整房间粘附和排斥依赖者过程。这里,我们证明 Reelin 绑在 EphB transmembrane 蛋白质的细胞外的领域,导致受体聚类和向前在神经原发信号的 EphB 的激活,独立于“古典”的 Reelin 受体, ApoER2 和 VLDLR。因此,鼠标缺乏 EphB1 和 EphB2 显示 CA3 海马趾的金字塔形的神经原的一个放的缺点,类似于那在 Reelin 缺乏的鼠标,和这房间迁居,缺点取决于 EphB 蛋白质的 kinase 活动。一起,我们的数据为在向前发信号的 Reelin 和 EphB 之间的信号集成提供生物化学、功能的证据。 | Elisabeth Bouche Mario I Romero-Ortega Mark Henkemeyer Timothy Catchpole Jost Leemhuis Michael Frotscher Petra May Joachim Herz Hans H Bock | 2013 | Cell Research2013,23,4: | 5 |
| 6 | Nanoscopy reveals surface-metallic black phosphorus显示文摘Black phosphorus(BP)is an emerging two-dimensional material with intriguing physical properties.It is highly anisotropic and highly tunable by means of both the number of monolayers and surface doping.Here,we experimentally investigate and theoretically interpret the near-field properties of a-few-atomic-monolayer nanoflakes of BP.We discover near-field patterns of bright outside fringes and a high surface polarizability of nanofilm BP consistent with its surface-metallic,plasmonic behavior at mid-infrared frequencies o1176 cm−1.We conclude that these fringes are caused by the formation of a highly polarizable layer at the BP surface.This layer has a thickness of~1 nm and exhibits plasmonic behavior.We estimate that it contains free carriers in a concentration of n≈1.1×10^(20) cm^(−3).Surface plasmonic behavior is observed for 10–40 nm BP thicknesses but absent for a 4-nm BP thickness.This discovery opens up a new field of research and potential applications in nanoelectronics,plasmonics and optoelectronics. | Yohannes Abate Sampath Gamage Zhen Li Viktoriia Babicheva Mohammad H Javani Han Wang Stephen B Cronin Mark I Stockman | 2016 | Light(Science & Applications)2016,5,1: | 2 |
| 7 | Mechanical properties and solid lubricant wear behavior of Al/Al2O3/C hybrid metal matrix composites fabricated by squeeze casting method 显示文摘 | Song J I Han K S | 1997 | J Comp Mater1997,31,4: | 2 |
| 8 | Strategies to tackle the challenges of external beam radiotherapy for liver tumors显示文摘Primary and metastatic liver cancer is an increasingly common and difficult to control disease entity.Radiation offers a non-invasive treatment alternative for these patients who often have few options and a poor prognosis.However,the anatomy and aggressiveness of liver cancer poses significant challenges such as accurate localization at simulation and treatment,management of motion and appropriate selection of dose regimen.This article aims to review the options available and provide information for the practical implementation and/or improvement of liver cancer radiation programs within the context of stereotactic body radiotherapy and image-guided radiotherapy guidelines.Specific patient inclusion and exclusion criteria are presented given the significant toxicity found in certain sub-populations treated with radiation.Indeed,certain sub-populations,such as those with tumor thrombosis or those with larger lesions treated with transarterial chemoembolization,have been shown to have significant improvements in outcome with the addition of radiation and merit special consideration.Implementing a liver radiation programrequires three primary challenges to be addressed:(1) immobilization and motion management;(2) localization;and(3) dose regimen and constraint selection.Strategies to deal with motion include simple internal target volume(ITV) expansions,non-gated ITV reduction strategies,breath hold methods,and surrogate marker methods to enable gating or tracking.Localization of the tumor and organs-at-risk are addressed using contrast infusion techniques to take advantage of different normal liver and cancer vascular anatomy,imaging modalities,and margin management.Finally,a dose response has been demonstrated and dose regimens appear to be converging.A more uniform approach to treatment in terms of technique,dose selection and patient selection will allow us to study liver radiation in larger and,hopefully,multicenter randomized studies. | Michael I Lock Jonathan Klein Hans T Chung Joseph M Herman Edward Y Kim William Small Nina A Mayr Simon S Lo | 2017 | World Journal of Hepatology2017,9,14: | 2 |
| 9 | Perihepatic nodes detected by point-of-care ultrasound in acute hepatitis and acute-on-chronic liver disease显示文摘AIM: To study the manifestations of perihepatic lymph nodes during the episode of acute hepatitis flare by point-of-care ultrasonography.METHODS: One hundred and seventy-six patients with an episode of acute hepatitis flare(ALT value > 5 × upper normal limit) were enrolled retrospectively. Diagnosis of etiology of the acute hepatitis flare was based on chart records and serological and virological assays. The patients were categorized into two groups(viral origin and non-viral origin) and further defined into ten subgroups according to the etiologies. An ultrasonograpy was performed within 2 h to 72 h(median, 8 h). The maximum size of each noticeable lymph node was measured. Correlation between clinical parameters and nodal manifestations was analyzed RESULTS: Enlarged lymph nodes(width ≥ 5mm)were noticeable in 110(62.5%) patients, mostly in acute on chronic hepatitis B(54.5%). The viral group had a higher prevalence rate(89/110 = 80.9%) and larger nodal size(median, 7 mm) than those of the non-viral group(21/66 = 31.8%; median, 0 mm)(P < 0.001 for both). Meanwhile, there were significant differences in the nodal size between acute and chronic viral groups(P < 0.01), and between acute hepatitis A and non-hepatitis A viral groups(P < 0.001). In logistical regression analysis, the nodal width still showed strong significance in multivariate analysis(P < 0.0001) to stratify the two groups. The area under the curve of ROC was 0.805, with a sensitivity of 80.9%, a specificity of 68.2%, positive predictive value of 80.92%, negative predictive value of 68.18%, and an accuracy of 76.14%. CONCLUSION: Point-of-care ultrasonography to detect perihepatic nodal change is valuable for clarifying the etiologies in an episode of acute hepatitis flare. | I Che Feng Szu Jen Wang Ming Jen Sheu Lok-Beng Koay Ching Yih Lin Chung Han Ho Chi Shu Sun Hsing Tao Kuo | 2015 | World Journal of Gastroenterology2015,21,44: | 2 |
| 10 | Effects of dietary buffering characteristic and protected or unprotected acids on piglet growth, digestibility and characteristics of gut content显示文摘 | BOSI P JUNG H J HAN I K | 1999 | Asian Aust J Anim Sci1999,12,7: | 1 |
| 11 | Microstruetural characterization of Al2O3-Ni composites prepared by electroless deposition 显示文摘 | OH I H LEE J Y HAN J K | 2005 | Surf Coat Technol2005,192,: | 1 |
| 12 | Effect of supplemental synthetic anaino acids to the low diels on the perfnrmanee of growing pigs显示文摘 | Jin C F Kim I H Han I K | 1998 | Asian Australas J Anita Sci1998,11,1: | 1 |
| 13 | Cholangioearcinoma:pictorial essay of CT and cholangiographic findings显示文摘 | Han J K Choi B I Kim A Y | 2002 | Radiographics2002,22,1: | 1 |
| 14 | Grafted lineage-restricted precursors differentiate exclusively into neurons in the adult spinal cord 显示文摘 | Han SS Rao MS Fischer I | 2002 | Exp Neuro12002,177,2: | 1 |
| 15 | Failure of intertrochanteric fracture fixation with a dynamic hip screw in relation to preoperative fracture stability and osteoporosis显示文摘 | KIM W Y HAN C H PARK J I | 2001 | In Orthop2001,25,6: | 1 |
| 16 | Effects of supplemental synthetic amino acids to the low diets on the performance of growing pigs显示文摘 | JIN C F KIM I H HAN K | 1999 | Asian-Aus J Anim Sci1999,11,: | 1 |
| 17 | Water-soluble lipopolymer for gene delivery 显示文摘 | HAN S MAHATO R I KIM S W | 2001 | Bioconjug Chem2001,12,3: | 1 |
| 18 | Wely's theorem for algebraically quasi-class A operators显示文摘 | An I J Han Y M | 2008 | Integ Equat Oper Th2008,62,: | 1 |
| 19 | The Effect of Negative Online Con- sumer Reviews on Product Attitude : An Information Processing View显示文摘 | Lee J Park D H Han I | 2008 | Electronic Commerce Research and Applications2008,,7: | 1 |
| 20 | Dictyoquinazols A,B,and C,new neuroprotective compounds from the mushroom Dictyophora indusiata显示文摘 | LEE I K YUN B S HAN G | 2002 | Journal of Natural Products2002,65,12: | 1 |