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1L^p-Boundedness of Marcinkiewicz Integrals with Hardy Space Function KernelsYong Ding Department of Mathematics, Beijing Normal University, Beijing 100875, P. R. China Dashan Fan Department of Mathematics, Anhui University and University of Wisconsin-Milwaukee. MW 53201 USA Yibiao Pan Department of Mathematics, University of Pittsburgh. Pittsburgh. Pennsylvania 15260. USA 2000Acta Mathematica Sinica,English Series2000,16,4:88
2Towards 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 2021Science China(Information Sciences)2021,64,1:122
3Restoring urbanization process in China in the 1990s by using non-radiance-calibrated DMSP/OLS nighttime light imagery and statistical data显示文摘Since current administrative unit-based urban land area statistical data in China lack enough spatial information, the urbanization process re- search at large scale cannot be effectively supported. Based on the current administrative unit-based urban land area statistical data in China, a new approach to quickly and cheaply derive urban land information from the non-radiance-calibrated Defense Meteoro- logical Satellite Program/ Operational Linescan Sys- tem (DMSP/OLS) nighttime light imagery is pre- sented in this paper. With the new approach, the ur- ban pattern information in China in 1992, 1996 and 1998 was derived with the urbanization processes in China in the 1990s restored by using the non-ra- diance-calibrated DMSP/OLS nighttime imagery. The accuracy assessment based on the statistical data showed that the relative error between the derived total urban land area and the statistical data at na- tional scale was less than 2% in 1992, and less than 1% in 1996 and 1998, and the maximum relative er- ror at province scale do not exceed 10% with most of the provinces less than 3%. In addition, the urban patterns derived from the high-resolution Landsat TM imagery were compared with those from the DMSP/ OLS data. The results showed that the urban pattern characteristics derived from DMSP/OLS were basi-cally coincident with those from TM imagery with the total accuracy of about 80%. Thus it can be seen that our restored urbanization process in China in the 1990s by using the non-radiance DMSP/OLS night- time imagery can be accepted and can represent the actual urban development in China at that time on the whole.HE Chunyang SHI Peijun LI dinggang CHEN din PAN Yaozhong LI ding ZHUO Li Ichinose Toshiaki 2006Chinese Science Bulletin2006,51,13:55
4IL-1beta sensitizes rat intervertebral disc cells to Fas ligand mediated apoptosis in vitro显示文摘瞄准:在老鼠上决定 recombinant 老鼠船边交货 Ligand 的 apoptotic 效果内部脊椎的磁盘房间在有教养的老鼠与船边交货的 IL-1beta 在试管内,和表达式预先对待内部脊椎的磁盘房间。方法:房间从 Sprague-Dawley 老鼠从腰部的磁盘的内部纤维环和移行区被孤立。房间在单层被种并且在 5 个处理组划分。IL-1beta (10 ng/mL ) , FasL (5, 20 ng/mL ) 与 / 没有 IL-1beta (10 ng/mL ) ,预告的处理分别地在 Dulbeccoos 被增加有 1% 胎儿的牛的浆液的修改 Eagleos 媒介和 Hamos 氟利昂十二媒介。在 32 h 以后,房间在 V-FITC 和 propidium 碘化物与附属建筑被染色用 RT-PCR 用流动血细胞计数并且到船边交货的分析抄写评估 apoptosis。结果:与控制组相比, FasL (20 ng/mL ) , IL-1beta (10 ng/mL )+FasL (5 ng/mL ) ,和 IL-1beta (10 ng/mL )+FasL (20 ng/mL ) 导致了圆盘房间(P<0.01 ) 的重要 apoptosis。Apoptosis 被 FasL 5 ng/mL (P<0.05 ) 也导致;而, apoptosis 没被 IL-1beta (10 ng/mL )(P>0.05 ) 导致。IL-1beta (10 ng/mL ) 在圆盘房间提高了 FasL (5 ng/mL ) 和 FasL (20 ng/mL ) 的导致 apoptosis 效果。在所有组的船边交货基因抄写和在 5 个处理组的船边交货表示是近似比控制组大的 1.2-2.1-fold (分别地, P<0.05 ) 。另外,在与 IL-1beta 预告的处理组一起的 FasL 的船边交货表示比在 FasL 组(P<0.01 ) 显著地起来调整。结论:这研究的结果证明圆盘房间与增加的 apoptotic 响应 FasL 在试管内评估的 IL-1beta 预先对待并且提供了卓见在将在退化圆盘由于发炎因素被提高的圆盘房间理解 Fas/FasL 调停系统的 apoptosis。Li-yang CUI Shang-li LIU Yue DING Dong-sheng HUANG Ruo-fan MA Wei-guo HUANG Bao-shan HU Qiu-hui PAN 2007Acta Pharmacologica Sinica2007,28,10:32
5Improved survival of porcine acute liver failure by a bioartificial liver device implanted with induced human functional hepatocytes显示文摘Xiao-Lei Shi Yimeng Gao YupengYan HuchengMa Lulu Sun Pengyu Huang Xuan Ni Ludi Zhang Xin Zhao Haozhen Ren Dan Hu Yan Zhou Feng Tian Yuan Ji Xin Cheng Guoyu Pan Yi-Tao Ding LijianHui 2016Cell Research2016,26,2:31
6Positive impact of adding No.14v lymph node to D2 dissection on survival for distal gastric cancer patients after surgery with curative intent显示文摘Background:D2 lymphadenectomy has been increasingly regarded as standard surgical procedure for advanced gastric cancer(GC),while the necessity of No.14 v lymph node(14v) dissection for distal GC is still controversial.Methods:A total of 920 distal GC patients receiving at least a D2 lymph node dissection in Department of Gastric Cancer,Tianjin Medical University Cancer Institute and Hospital were enrolled in this study,of whom,243 patients also had the 14 v dissected.Other 677 patients without 14 v dissection were used for comparison.Results:Forty-five(18.5%) patients had 14 v metastasis.There was no significant difference in 3-year overall survival(OS) rate between patients with and without 14 v dissection.Following stratified analysis,in TNM stages I,II,IIIa and IV,14 v dissection did not affect 3-year OS;in contrast,patients with 14 v dissection had a significant higher 3-year OS than those without in TNM stages IIIb and IIIc.In multivariate analysis,14 v dissection was found to be an independent prognostic factor for GC patients with TNM stage IIIb/IIIc disease [hazard ratio(HR),1.568;95% confidence interval(CI):1.186-2.072;P=0.002].GC patients with 14 v dissection had a significant lower locoregional,especially lymph node,recurrence rate than those without 14 v dissection(11.7 % vs.21.1%,P=0.035).Conclusions:Adding 14 v to D2 lymphadenectomy may be associated with improved 3-year OS for distal GC staged TNM Ⅲb/Ⅲc.Yuexiang Liang Liangliang Wu Xiaona Wang Xuewei Ding Hongmin Liu Bin Li Baogui Wang Yuan Pan Rupeng Zhang Ning Liu Han Liang 2015Chinese Journal of Cancer Research2015,27,6:22
7Effect of ultrasound-guided acupotomy vs electro-acupuncture on knee osteoarthritis:a randomized controlled study显示文摘OBJECTIVE:To investigate the effect of acupotomy on knee osteoarthritis(KOA),compared to electro-acupuncture(EA).METHODS:Sixty KOA patients were randomly divided into 2 groups:ultrasound-guided acupotomy group and EA group;each had 3 weeks' therapy.After the treatment,by contrast before and after therapy,by comparing curative effects among groups,we looked into disease improvement degree through activities of daily living score(ADL),hospital for special surgery index(HSS),visual analogue scales score(VAS) and knee joint's infrared thermal imaging detection.RESULTS:Graded by ADL,the excellent rate in acupotomy group was much higher than EA group;both acupotomy group and EA group had obviouschanges in HSS index before and after the therapy(P < 0.01).And there was remarkable difference in HSS index variation between the groups(P < 0.01).Acupotomy group and EA group showed big difference in pain index before and after treatment(P <0.01).Apparent difference also existed in the comparison among groups(P < 0.01).Both acupotomy group and EA group had apparent changes in infrared thermal imaging detection before and after the treatment(P < 0.01).CONCLUSION:Acupotomy and EA both have significant effects in KOA treatment;the former is better than the latter in relieving pain and improving knee functions.Ding Yu Wang Yuexiang Shi Xian Luo Yun Gao Yuhong Pan Jingkun 2016Journal of Traditional Chinese Medicine2016,36,4:21
8Effect of porosities of bilayered porous scaffolds on spontaneous osteochondral repair in cartilage tissue engineering显示文摘Poly(lactide-co-glycolide)-bilayered scaffolds with the same porosity or different ones on the two layers were fabricated,and the porosity effect on in vivo repairing of the osteochondral defect was examined in a comparative way for the first time.The constructs of scaffolds and bone marrow-derived mesenchymal stem cells were implanted into pre-created osteochondral defects in the femoral condyle of New Zealand white rabbits.After 12 weeks,all experimental groups exhibited good cartilage repairing according to macroscopic appearance,cross-section view,haematoxylin and eosin staining,toluidine blue staining,immunohistochemical staining and real-time polymerase chain reaction of characteristic genes.The group of 92%porosity in the cartilage layer and 77%porosity in the bone layer resulted in the best efficacy,which was understood by more biomechanical mimicking of the natural cartilage and subchondral bone.This study illustrates unambiguously that cartilage tissue engineering allows for a wide range of scaffold porosity,yet some porosity group is optimal.It is also revealed that the biomechanical matching with the natural composite tissue should be taken into consideration in the design of practical biomaterials,which is especially important for porosities of a multi-compartment scaffold concerning connected tissues.Zhen Pan Pingguo Duan Xiangnan Liu Huiren Wang Lu Cao Yao He Jian Dong Jiandong Ding 2015Regenerative Biomaterials2015,2,1:20
9Sirtuin 1 alleviates endoplasmic reticulum stress-mediated apoptosis of intestinal epithelial cells in ulcerative colitis显示文摘BACKGROUND Sirtuin 1(SIRT1)is a nicotinamide adenine dinucleotide(NAD+)-dependent protein deacetylase that is involved in various diseases,including cancers,metabolic diseases,and inflammation-associated diseases.However,the role of SIRT1 in ulcerative colitis(UC)is still confusing.AIM To investigate the role of SIRT1 in intestinal epithelial cells(IECs)in UC and further explore the underlying mechanisms.METHODS We developed a coculture model using macrophages and Caco-2 cells.After treatment with the SIRT1 activator SRT1720 or inhibitor nicotinamide(NAM),the expression of occludin and zona occludens 1(ZO-1)was assessed by Western blot analysis.Annexin V-APC/7-AAD assays were performed to evaluate Caco-2 apoptosis.Dextran sodium sulfate(DSS)-induced colitis mice were exposed to SRT1720 or NAM for 7 d.Transferase-mediated dUTP nick-end labeling(TUNEL)assays were conducted to assess apoptosis in colon tissues.The expression levels of glucose-regulated protein 78(GRP78),CCAAT/enhancerbinding protein homologous protein(CHOP),caspase-12,caspase-9,and caspase-3 in Caco-2 cells and the colon tissues of treated mice were examined by quantitative real-time PCR and Western blot.RESULTS SRT1720 treatment increased the protein levels of occludin and ZO-1 and inhibited Caco-2 apoptosis,whereas NAM administration caused the opposite effects.DSS-induced colitis mice treated with SRT1720 had a lower disease activity index(P<0.01),histological score(P<0.001),inflammatory cytokine levels(P<0.01),and apoptotic cell rate(P<0.01),while exposure to NAM caused the opposite effects.Moreover,SIRT1 activation reduced the expression levels of GRP78,CHOP,cleaved caspase-12,cleaved caspase-9,and cleaved caspase-3 in Caco-2 cells and the colon tissues of treated mice.CONCLUSION SIRT1 activation reduces apoptosis of IECs via the suppression of endoplasmic reticulum stress-mediated apoptosis-associated molecules CHOP and caspase-12.SIRT1 activation may be a potential therapeutic strategy for UC.Meng-Ting Ren Meng-Li Gu Xin-Xin Zhou Mo-Sang Yu Hang-Hai Pan Feng Ji Chen-Yan Ding 2019World Journal of Gastroenterology2019,25,38:20
10Crustal and uppermost mantle structure of SE Tibetan plateau from Rayleigh-wave group-velocity measurements显示文摘A shear-wave velocity model of the crust and uppermost mantle beneath the SE Tibetan plateau was derived by inverting Rayleigh-wave group-velocity measurements of periods between 10 and 70 s. Rayleigh-wave group-velocity dispersions along more than 3,000 interstation paths were measured based on analysis of teleseismic waveform data recorded by temporary seismic stations. These observations were then utilized to construct2 D group-velocity maps in the period range of 10–70 s.The new group-velocity maps have an enhanced resolution compared with previous global and regional group-velocity models in this region because of the denser and more uniform data coverage. The lateral resolution across the region is about 0.5° for the periods used in this study. Local dispersion curves were then inverted for a 3D shear-wave velocity model of the region by applying a linear inversion scheme. Our 3D shear-wave model confirms the presence of low-velocity zones(LVZs) in the crust beneath the northern part of this region. Our imaging shows that the upper-middle crustal LVZ beneath the Tengchong region is isolated from these LVZs beneath the eastern and northern part of this region. The upper–middle crustal LVZ may be regarded as evidence of a magma chamber in the crust beneath the Tengchong Volcanoes. Our model also reveals a slow lithospheric structure beneath Tengchong and a fast shield-like mantle beneath the stable Yangtze block.Yonghua Li Jiatie Pan Qingju Wu Zhifeng Ding 2014Earthquake Science2014,27,4:19
11Effect of L-NAME on nitric oxide and gastrointestinal motility alterations in cirrhotic rats显示文摘AIM: To invsstigare the effect of L-NAME on nitric oxide andgastriubtestubal motility alterations in cirrhotic ratsMETHODS: Rats with cirrhosis induced by carbontetrachloride were randomly divided into two groups, one( n= 13) receiving 0. 5 mg@ kg-1 per clay of NG-nitro-L-argininemethyl ester (L-NAME), a nitric oxide synthase inhibitor,for 10 days, whereas the other group ( n = 13) and control( n = 10) rats were administrated the same volume of 9 g@ L-1saline.Half gastric emptying time and 2 h residual rate weremeasured by SPECT, using 99m Tc-DTPA-labeled bariumsuifate as test meal. Gastrointestinal transition time wasrecorded simultaneously. Serum concentration of nitrcoxide (NO) was determined by the kinetic cadmiunreduction and colorimetric methods. ImmunohistochemicalSABC method was used to observe the expression anddistribution of three types of nitric oxide synthase (NOS)isoforms in the mt gastrointestinal tract. Western blot wasused to detect expression of gastrointestinal NOS isoforms.RESULTS: Half gastric emptying time and trans-gastrointestinal time were significantly prolonged( 124.0 ± 26.4min; 33.7± 8.9min;72.1 ± 15.3 min; P<0.01), (12.4±0.5h; 9.5±0.3 h; 8.2±0.8 h; P<0.01), 2h residual rate wasraised in cirrhotic rots than in controls and cirrhotic ratstreated with L-NAME(54.9± 7.6 % ,13.7 ± 3.2 %, 34.9± 10.3%, P< 0.01). Serum concentration of NO was significantlyincreased in cirrhotic rots than in the other groups (8.20 ± 2.48)μmol@L-1, (5.94± 1.07) μmol@L-1 ,and control (5.66± 1.60) tμmol@L-1, P< 0.01. NOS staining intensities which weremainly located in the gastrointestinal tissues were markedlylower in cirrhotic rats than in the controls and cirrhotic ratsafter treated with L- NAME.CONCLUSION: Gastrointestinal motility was remarkablyinhibited in cirrhotic rats, which could he alleviated by L-NAME. Nitric oxide may play an important role in theinhibition of gastrointestinal motility in cirrhotic rats.Xin Wang Zong-You Zhang Mei Lan Ji-Yan Miao Xue-Gang Guo Yong-Quan Shi Yan-Qiu Zhao Jie Ding Kai-Cun Wu Dai-Ming Fan,Institute of Digestive disease,Xijing Hospital,Fourth Military Medical University,Xi’an 710032,Shaanxi Province,China Yue-Xia Zhong,Emergency Department,Tangdu Hospital,Fourth Military Medical University,Xi’an 710038,Shaanxi Province,China Ju Lu,Class EE 87,Department of Electronic Engineering,Tsinghua University,Beijing 100084,China Bo-Rong Pan,Oncology Center,Xijing Hospital,Fourth Military Medical University,Xi’an 710032,Shaanxi Province,China 2002World Journal of Gastroenterology2002,8,2:19
12Rhizobacterium Bacillus amyloliquefaciens Strain SQRT3-Mediated Induced Systemic Resistance Controls Bacterial Wilt of Tomato显示文摘Tomato bacterial wilt caused by Ralstonia solanacearum seriously threats tomato growth in tropical and temperate regions around the world.This study reported an antagonistic bacterial strain, Bacillus amyloliquefaciens strain SQRT3, isolated from the rhizosphere soil of tomato plants, which strongly inhibited in vitro growth of pathogenic R.solanacearum.The suppression of tomato bacterial wilt by strain SQRT3 was demonstrated under greenhouse conditions.Additionally, induced systemic resistance(ISR) in tomato as one of the potential disease suppression mechanisms was investigated in the plants inoculated with the isolated bacterial strain SQRT3.The results showed that strain SQRT3 applied with R.solanacearum by drenching significantly reduced tomato bacterial wilt by 68.1% biocontrol efficiency(BE) and suppressed the R.solanacearum populations in the rhizosphere soil compared to the control only drenched with R.solanacearum.The BE of the isolated bacterial strain SQRT3 against tomato wilt increased to 84.1%by root-dipping.Tomato plants treated with both strain SQRT3 and R.solanacearum showed increases in activities of peroxidase and polyphenol oxidase compared with other treatments.The application of strain SQRT3 reduced membrane lipid peroxidation in tomato leaves.The expressions of marker genes for jasmonic acid-and salicylic acid-dependent signaling pathways were faster and stronger in tomato plants treated with both strain SQRT3 and R.solanacearum than in plants treated with either R.solanacearum or strain SQRT3 alone.Collectively, the findings indicated that strain SQRT3 can effectively control tomato wilt.LI Chunyu HU Weicong PAN Bin LIU Yan YUAN Saifei DING Yuanyuan LI Rong ZHENG Xinyan SHEN Biao SHEN Qirong 2017Pedosphere2017,27,6:18
13Methylmercury and sulfate-reducing bacteria in mangrove sediments from Jiulong River Estuary,China显示文摘Estuaries are important sites for mercury (Hg) methylation,with sulfate-reducing bacteria (SRB) thought to be the main Hg methylators.Distributions of total mercury (THg) and methylmercury (MeHg) in mangrove sediment and sediment core from Jiulong River Estuary Provincial Mangrove Reserve,China were determined and the possible mechanisms of Hg methylation and their controlling factors in mangrove sediments were investigated.Microbiological and geochemical parameters were also determined.Results showed that SRB constitute a small fraction of total bacteria (TB) in both surface sediments and the profile of sediments.The content of THg,MeHg,TB,and SRB were (350±150)ng/g,(0.47±0.11)ng/g,(1.4×10 11±4.1×109)cfu/g dry weight (dw),and (5.0×106±2.7×106)cfu/g dw in surficial sediments,respectively,and (240±24)ng/g,(0.30±0.15)ng/g,(1.9×1011± 4.2×1010)cfu/g dw,and (1.3×106± 2.0×106) cfu/g dw in sediment core,respectively.Results showed that THg,MeHg,TB,MeHg/THg,salinity and total sulfur (TS) increased with depth,but total organic matter (TOM),SRB,and pH decreased with depth.Concentrations of MeHg in sediments showed significant positive correlation with THg,salinity,TS,and MeHg/THg,and significant negative correlation with SRB,TOM,and pH.It was concluded that other microbes,rather than SRB,may also act as main Hg methylators in mangrove sediments.Hao Wu Zhenhua Ding Yang Liu Jinling Liu Haiyu Yan Jiayong Pan Liuqiang Li Huina Lin Guanghui Lin Haoliang Lu 2011Journal of Environmental Sciences2011,23,1:17
14Effects of applying lactic acid bacteria to the fermentation on a mixture of corn steep liquor and air-dried rice straw显示文摘This study was to determine the fermentation quality of a mixture of corn steep liquor(CSL)(178 g/kg wet basis) and air-dried rice straw(356 g/kg wet basis) after being treated with inoculants of different types of lactic acid bacteria(LAB). The treatments included the addition of no LAB additive(control),which was deionized water; homo-fermentative LAB alone(^(ho)LAB), which was Lactobacillus plantarum alone), and a mixture of homo-fermentative and hetero-fermentative LAB(^(he+ho)LAB), which were L. plantarum, Lactobacillus casei, and Lactobacillus buchneri. The results showed that the inoculation of the mixture of CSL and air-dried rice straw with ^(he+ho)LAB significantly increased the concentration of acetic acid and lactic acid compared with the control(P < 0.05). The addition of ^(he+ho)LAB effectively inhibited the growth of yeast in the silage. The concentration of total lactic acid bacteria in the ^(he+ho)LAB-treated silage was significant higher than those obtained in other groups(P < 0.05). The duration of the aerobic stability of the silages increased from 56 h to >372 h. The control group was the first to spoil, whereas the silage treated with ^(he+ho)LAB remained stable throughout the 372 h period of monitoring. The results demonstrated that the ^(he+ho)LAB could effectively improve the fermentation quality and aerobic stability of the silage.Xinxin Li Wenbin Xu Jinshan Yang Hongbo Zhao Chunfang Pan Xue Ding Yonggen Zhang 2016Animal Nutrition2016,,3:17
15A possible relationship between serum sex hormones and benign prostatic hyperplasia/Iower urinary tract symptoms in men who underwent transurethral prostate resection显示文摘Yu Wu Hong Pan Wei-Ming Wang Ding Xu Liang Zhang Zheng-Qin Gu Qiang Bai un Qi e-Feng Huang 2017Asian Journal of Andrology2017,19,2:17
16Ubiquitination of Rheb governs growth factor-induced mTORC1 activation显示文摘Mechanistic target of rapamycin mTOR complex 1 (mTORC1)plays a key role in the integration of various environmental signals to regulate cell growth and metabolism,mTORC1 is recruited to the lysosome where it is activated by its interaction with GTP-bound Rheb GTPase.However,the regulatory mechanism of Rheb activity remains largely unknown.Here,we show that ubiquitination governs the nucleotide-bound status of Rheb.Lysosome-anchored E3 ligase RNF152 catalyzes Rheb ubiquitination and promotes its binding to the TSC complex.EGF enhances the deubiquitination of Rheb through AKT-dependent USP4 phosphorylation,leading to the release of Rheb from the TSC complex.Functionally,ubiquitination of Rheb is linked to mTORC1-mediated signaling and consequently regulates tumor growth.Thus,we propose a mechanistic model whereby Rheb-mediated mTORC1 activation is dictated by a dynamic opposing act between Rheb ubiquitination and deubiquitination that are catalyzed by RNF152 and USP4 respectively.Lu Deng Lei Chen Linlin Zhao Yan Xu Xiaoping Peng Xinbo Wang Lin Ding Jiali Jin Hongqi Teng Yanming Wang Weijuan Pan Fei Yu Lujian Liao Li Li Xin Ge Ping Wang 2019Cell Research2019,29,2:16
17Crustal stress field in Yunnan: implication for crust-mantle coupling显示文摘We applied the g CAP algorithm to determine239 focal mechanism solutions 3:0 M We 6:0T with records of dense Chin Array stations deployed in Yunnan,and then inverted 686 focal mechanisms(including 447 previous results) for the regional crustal stress field with a damped linear inversion. The results indicate dominantly strike-slip environment in Yunnan as both the maximum(r1) and minimum(r3) principal stress axes are sub-horizontal. We further calculated the horizontal stress orientations(i.e., maximum and minimum horizontal compressive stress axes: S H and S h, respectively) accordingly and found an abrupt change near *26°N. To the north, S H aligns NW-SE to nearly E-W while S h aligns nearly N-S. In contrast, to the south, both S H and S h rotate laterally and show dominantly fan-shaped patterns. The minimum horizontal stress(i.e., maximum strain axis) S h rotates from NW-SE to the west of Tengchong volcano gradually to nearly E-W in west Yunnan, and further toNE-SW in the South China block in the east. The crustal strain field is consistent with the upper mantle strain field indicated by shear-wave splitting observations in Yunnan but not in other regions. Therefore, the crust and upper mantle in Yunnan are coupled and suffering vertically coherent pure-shear deformation in the lithosphere.Zhigang Xu Zhouchuan Huang Liangshu Wang Mingjie Xu Zhifeng Ding Pan Wang Ning Mi Dayong Yu Hua Li 2016Earthquake Science2016,29,2:15
18The effects of diabetes on male fertility and epigenetic regulation during spermatogenesis显示文摘Guo-Lian Ding Ye Liu Miao-E Liu Jie-Xue Pan Meng-Xi Guo Jian-Zhong Sheng He-Feng Huang 2015Asian Journal of Andrology2015,17,6:14
19Outcomes of preoperative chemoradiotherapy followed by surgery in patients with unresectable locally advanced sigmoid colon cancer显示文摘Background: Complete resection of locally advanced sigmoid colon cancer(LASCC) is sometimes difficult. Patients with LASCC have a dismal prognosis and poor quality of life, which has encouraged the evaluation of alternative multimodality treatments. This prospective study aimed to assess the feasibility and efficacy of neoadjuvant chemora?diotherapy(neo CRT) followed by surgery as treatment of selected patients with unresectable LASCC.Methods: We studied the patients with unresectable LASCC who received neo CRT followed by surgery between October 2010 and December 2012. The neoadjuvant regimen consisted of external?beam radiotherapy to 50 Gy and capecitabine?based chemotherapy every 3 weeks. Surgery was scheduled 6–8 weeks after radiotherapy.Results: Twenty?one patients were included in this study. The median follow?up was 42 months(range, 17–57 months). All patients completed neo CRT and surgery. Resection with microscopically negative margins(R0 resection) was achieved in 20 patients(95.2%). Pathologic complete response was observed in 8 patients(38.1%). Multivisceral resection was necessary in only 7 patients(33.3%). Two patients(9.5%) experienced grade 2 postopera?tive complications. No patients died within 30 days after surgery. For 18 patients with pathologic M0(yp M0) disease, the cumulative probability of 3?year local recurrence?free survival, disease?free survival and overall survival was 100.0%, 88.9% and 100.0%, respectively. For all 21 patients, the cumulative probability of 3?year overall survival was 95.2% and bladder function was well preserved.Conclusion: For patients with unresectable LASCC, preoperative chemoradiotherapy and surgery can be performed safely and may result in an increased survival rate.Bo Qiu Pei-Rong Ding Ling Cai Wei-Wei Xiao Zhi-Fan Zeng Gong Chen Zhen-Hai Lu Li-Ren Li Xiao-Jun Wu Rene-Olivier Mirimanoff Zhi-Zhong Pan Rui-Hua Xu Yuan-Hong Gao 2016Chinese Journal of Cancer2016,35,10:14
20An energy minimization algorithm based on distributed dynamic clustering for long term evolution(LTE) heterogeneous networks显示文摘Energy saving has become an important issue in wireless communications from both environment and economic considerations. In this paper, an energy minimization algorithm based on distributed dynamic clustering(DDCEM) with lower complexity, higher performance, and better adaptability for heterogeneous network(Het Net) is proposed. A Het Net could be divided into several clusters, which is defined as one group of a network node and users served by the node. A energy efficient user association, which dynamically changes according to real-time energy efficiency(EE) evaluation with traffic load and location distribution of each cluster, can be employed to save consumed energy. Then, the optimal sleeping relay is found as follows. First,the sleeping probability cost of each relay station(RS) is computed and ranked based on the user traffic and the position distribution of each cluster, and the relay with minimum sleeping probability is selected to be switched off. Hence, the sleep node is selected taking into account the traffic load and location of the Evolved Node B(e NB) and all the RSs. The complexity of the algorithm is greatly reduced because the user association operation and network load evaluation are fulfilled cluster by cluster. Simulation results show that the proposed DDCEM strategy offers EE gain with low system complexity.TONG En DING Fei PAN ZhiWen YOU Xiao Hu 2015Science China(Information Sciences)2015,58,4:13
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