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1Possible early Neoproterozoic magmatism associated with slab window in the Pingshui segment of the Jiangshan-Shaoxing suture zone: Evidence from zircon LA-ICP-MS U-Pb geochronology and geochemistry显示文摘We report here geochemical data, U-Pb zircon ages, and Hf isotopes for the high-Mg diorites (HMDs), Nb-enriched basaltic porphyrys (NEBPs) and plagiogranites (PLAGs) in the Pingshui segment of the Jiangshan-Shaoxing suture zone. The HMDs are characterized by high Mg# (>60), high Na and LREE contents, depletion of HREE and HFSE, and pronounced positive εNd(t) values of 7.0 to 7.7, similar to some adakitic high-Mg andesites. The NEBPs are relatively Na-rich (Na2O/K2O>6) and display high abundances of P2O5 (~1.00%), TiO2 (~3.08%) and HFSE (e.g., Nb=9.53-10.27 ppm). Their Nd isotopic compositions (εNd(t)=6.8-8.0) are comparable to those of the HMDs. The PLAGs are metaluminous (A/CNK=0.84-0.89) and sodic (Na2O/K2O>10). Their depletion in HFSE (e.g., Nb, Ta) is consistent with 'SSZ-type' plagiogranite. Zircon LA-ICP-MS U-Pb dating yields an age of 932±7 Ma for the HMD, 916±6 Ma for the NEBP, and 902±5 Ma for the PLAG, respectively, indicating that they were products of early Neoproterozoic magmatism. The PLAGs exhibit relatively high zircon Hf isotopes and positive εHf(t) values of 11.0 to 16.2, consistent with their Nd isotopic data (εNd(t)=7.5-8.4). Such features are similar to those of oceanic plagiogranites in ophiolites and distinct from those of crust-derived granites. The PLAGs were most likely derived from partial melting of subducted oceanic crust in an active continental margin. Considering these results in the context of the regional geology, we suggest that a slab window in the subducting oceanic crust between the Yangtze Block and Cathaysia Block was possibly the principal cause for the unique arc magmatism in the area. The upwelling asthenosphere below the slab window may have provided significant thermodynamic conditions.CHEN ZhiHong GUO KunYi DONG YongGuan CHEN Rong LI LongMing LIANG YiHong LI ChunHai YU XiMing ZHAO Ling XING GuangFu 2009Science China Earth Sciences2009,52,7:26
2Application Scenarios and Enabling Technologies of 5G显示文摘Fast growth of mobile internet and internet-of-things has propelled the concept formation and research on 5G wireless communications systems which are to be standardized around 2020(IMT-2020).There will be diverse application scenarios expected for 5G networks.Hence,key performance indicators(KPIs) of 5G systems would be very diverse,not just the peak data rate and average/edge spectral efficiency requirements as in previous generations.For each typical scenario,multiple technologies may be used independently or jointly to improve the transmission efficiency,to lower the cost,and to increase the number of connections,etc.Key enabling technologies are discussed which include massive MIMO,ultradense deployment specific techniques,nonorthogonal transmission,high frequency communications,etc.YUAN Yifei ZHU Longming 2014China Communications2014,11,11:13
3Petrogenesis of keratophyes in the Pingshui Group,Zhejiang:Constraints from zircon U-Pb ages and Hf isotopes显示文摘Zircon LA-ICP-MS U-Pb ages and Hf isotopic as well as whole-rock geochemical data are reported for keratophyes in the Pingshui Group, Zhejiang. The results are used to discuss their petrogenesis and geological significance. The keratophyes were dated at 904±8 to 906±10 Ma. These intermediate-felsic rocks are characterized by high LREE contents and depletion of HREE and HFSE (e.g., Nb, Ta, Ti, P), resembling arc-derived rocks. The keratophyes exhibit positive εHf(t) values of 8.6 to 15.4, consistent with their εNd(t) values of 6.4 to 7.9 but far away from those of crust-derived rocks. Such features indi-cate that they were likely originated from prompt reworking of juvenile crust by arc-continent collision during the early-Neoproterozoic assembly between the Cathaysia and Yangtze Blocks. Combining with their Hf model ages, we suggest that there may exist not only remarkable growth of juvenile crust at ca.1.3―1.1 Ga but also production of juvenile arc-derived crust along the southeastern margin of the Yangtze Block (e.g., the Pingshui area) at ca.1.0―0.9 Ga.CHEN ZhiHong XING GuangFu GUO KunYi DONG YongGuan CHEN Rong ZENG Yong LI LongMing HE ZhengYu ZHAO Ling 2009Chinese Science Bulletin2009,54,9:9
4IMPROVING ENGLISH TEACHER TALK显示文摘Research shows teachers’speaking less so involvesstudents more.So English teacher talk determines tosome extent whether the teaching is successful or not.After giving a brief introduction to teacher talk inEnglish class,this paper analyzes the possible factorsthat affect teacher talk.It then suggests some im-provements of teacher talk in order to better our teach-ing methodology.Song Deyun Pan Longming Chongqing University 2000Chinese Journal of Applied Linguistics2000,23,4:8
5A Middle-Upper Devonian Boundary Section in the Open Platform,Platform Margin Facies of Guilin,South China显示文摘The Caiziyan Middle and Upper Devonian boundary section is located approximately 30 km northeast of Guilin.It hosts relatively abundant benthic and common-rare pelagic fossils,including brachiopods,corals,tentaculites,and conodonts,which may serve as a better suitable section for pelagic and neritic stratigraphic correlation.In this section,10'standard'conodont zones are recognized across the Givetian-Frasnian boundary,including,in descending order,the Lower hassi Zone,punctata Zone,transitans Zone,the Upper falsiovalis Zone,the Lower falsiovalis Zone,disparilis Zone,the Upper hermanni-cristatus Zone,the Lower hermanni-cristatus Zone,the Upper varcus Zone, and the Middle varcus Zone,all of which are defined by the first occurrence of their defining conodont species.The Middle-Upper Devonian(Givetian-Frasnian) boundary is defined by the first occurrence of Ancyrodella pristina in accordance with the Global Stratotype Section and Point(GSSP),which is assigned at 6.2m above the base of bed 19 in the Caiziyan section.LI Hua MA Xueping WEI Longming 2009Acta Geologica Sinica(English Edition)2009,83,3:7
6Impacts of Preoperative Smoking and Smoking Cessation Time on Preoperative Peripheral Blood Inflammatory Indexes and Postoperative Hospitalization Outcome in Male Patients with Lung Cancer and Surgery Treatment显示文摘Objectives To investigate the effects of preoperative smoking and smoking cessation time on preoperative peripheral blood inflammatory indexes and postoperative hospitalization outcomes in male patients with lung cancer and surgery therapy.Methods We retrospectively enrolled 637 male patients who underwent curative-intent lung cancer resection between January 2014 and December 2016.Patients were classified as the current smokers,the never smokers,and the ex-smokers based on their smoking history,and the ex-smokers were allocated into five subgroups according to their smoking cessation times(CeT):CeT W6 weeks,6weeks10years.The preoperative peripheral blood white blood cells(WBCs),albumin,neutrophil to lymphocyte ratio(NLR),platelet to lymphocyte ratio(PLR),intraoperative blood loss,30-day mortality,in-hospital days,hospitalization costs,intensive care un辻(ICU),admission days and placement time of closed thoracic drainage tube were compared among difTerent groups.Results There were significant differences in WBC(F=S.275,P<0.001)and albumin(F=2,470,P<0.05)among patients of current smokers,ex-smokers with different smoking cessation time,and never-smokers.The blood WBC count in current smokers(7.7 X 109/L)was significantly higher than that in ex・smokers(7.0 X 109/L)and never-smokers(5.9 X 109/L)(t=-2.145,P<0.05;t=-6.073,P<0.01,respectively).The level of peripheral blood albumin in current smokers(41.1 g/L)was lower than that in ex・smokers(42.1 g/L)and neve—smokers(43.2 g/L)(t=2.323,P<0.05;t=3.995,P<0.01,respectively).The level of peripheral blood NLR in current smokers(3.7)was higher than that in ex-smokers(3.1)and never smokers(2.8)(t—-1.836,P<0.05;t=-2.889,P<0.01,respectively).There was no significant difference in WBC,albumin and NLR among five subgroups of different smoking cessation time.No significant difference was observed in intraoperative blood loss,30-day mortality,hospitalization costs,hospital stay,ICU stay and placement time of closed thoracic drainage tube among groups either.Conclusion Smoking increases the preoperative inflammatory indexes in peripheral blood of lung cancer patients.Smoking cessation has beneficial effect on reducing levels of these inflammatory indexes,which may be not impacted by the time length of smoking cessation.Therefore,lung cancer patients should be encouraged to quit smoking at any time.Longming Xu Shuiping Dai Yunxia Zuo 2020Chinese Medical Sciences Journal2020,35,2:2
7SizeGdependentmicrostrucGtureandeuropiumsitepreferenceinfluencefluorescentpropertiesofEu3+GdopedCa10(PO4)6(OH)2nanocrystal显示文摘LongM HongF LiW eta1 2008JournalofLuminescence2008,128,3:1
8Periodontal concerns associated w ith the orthodontic treatment of impacted teeth 显示文摘F rank CA LongM 2002Am J OrthodDentofacialOrthop2002,121,6:1
9Geochemical and zircon U-Pb and Hf isotopic study of the Baijuhu@an metaluminous A-type granite: Extension at 125-100 Ma and its tectonic significance for South China 显示文摘Wong J Sun Min Xing Guangfu Li Xian-hua Zhao Guochun Wong K Yuan Chao Xia Xiaoping Li Longming Wu Fuyuan 2009Lithos2009,112,34:1
10Native speaker/non-native speaker conversation and the negotiation of comp rehensible input显示文摘LongM 0,,04:1
11D esig n,Analysis,Prototyping, and Experimental Evaluation of anEficient Double Coil Magnetorhieological Valve 显示文摘H U G u o lia n g LONGM ing HUANGM in etal Advancesin Mechanical Engineering0,,:1
12The Role of Implicit Negative Evidence in SLA: Models and Recasts in Japanese andSpanish显示文摘LongM Inagaki S Ortega L 1998Modern Language Journal1998,,82:1
13TitaniumalloysintotaljointreplaceGment--amaterialsscienceperspective 显示文摘LongM RackHJ 1998BiomateriGals1998,19,:1
14Efficient photocatalytic degra- dation of phenol over Co3 O4/BiVO4 composite under visible light irradiation 显示文摘LONGM CAI W CAI J 2006The Journal of Physical Chemistry B2006,110,20:1
15YANG'S Quantisation step selection schemes in JPEG200显示文摘LONGM TAIHM 2002ELECTRONICS LETTERS2002,,6:1
16New Zircon U-Pb Ages of the Shirenshan Gneiss, North Qinling and Their Geological Implications显示文摘The Qinling Orogenic Belt(QOB)is a composite continental orogenic belt that has experienced many tectonic events.The QOB is subdivided into the following three litho-tectonic units:the North Qinling terrane,the Middle Qinling microplate and the South Qinling terrane.The North Qinling Terrane(NQT)underwent destruction and lithospheric thinning during the late Mesozoic,accompanied by extensive magmatic activity and increased surface heat flux,led to large-scale tectonic extension(e.g.,Ren Shenglian et al.,2016).The Shirenshan gneiss is located along the contact between the NQT and the North China Block(Fig.1).Previous studies suggested that it was produced as a result of the northward subduction of the NQT beneath the North China Block(e.g.,Wang Jingya et al.,2017).Therefore,it is significant to study its structural geology,petrology,geochemistry and chronology in order to understand the tectonic settings and the interaction between the Middle Qinling microplate and the North China Block.WANG Jingya REN Shenglian JIANG Dazhi DONG Shuwen LI Jiahao LI Longming GE Can SONG Chuanzhong HAN Xu LI Zhenqiang 2019Acta Geologica Sinica(English Edition)2019,93,1:0
17Host-guest inclusion for enhancing anticancer activity of pemetrexed against lung carcinoma and decreasing cytotoxicity to normal cells显示文摘Advanced chemotherapy strategies are in urgent demand for improving anticancer efficacy.Herein,a water-soluble pillar[6]arene(WP6 A)was used to load chemotherapeutic agent pemetrexed(PMX)by forming direct host-guest inclusion,which is beneficial for decreasing cytotoxicity of PMX on BEAS-2 B cells.NMR and florescence titration served to confirm the complexation between WP6 A and ATP with higher affinity[(5.67?0.31)x 10^(5)L/mol],favoring competitive replacement of PMX.Complexation ATP by WP6 A effectively prevented ATP from being hydrolyzed in presence of alkaline phosphatase.The formed host-guest complex was further used to block the efflux pump by cutting off energy source from ATP hydrolysis,which was accompanied with releasing PMX to produce synergistic enhancement of anticancer performance towards A549 cells.This supramolecular strategy would also be extended to other clinical chemotherapeutic agents and it was expected to provide salutary profits for cancer patients.Junyi Chen Yahan Zhang Yadan Zhang Liang Zhao Longming Chen Yao Chai Zhao Meng Xueshun Jia Qingbin Meng Chunju Li 2021Chinese Chemical Letters2021,32,10:0
18Tectonic Characteristics, Evolution, and Significance of the Zhouwang Fault, Lower Yangtze Area, Eastern China显示文摘Fault geometry, kinematics, geophysics, the tectonic stress field and tectonic evolution of the Zhouwang fault in the southern Jiangnan tectonic transition zone of the Lower Yangtze region, eastern China are examined. Field observations show the fault is composed of a series of nearly E–W trending, N–S dipping faults, and four stages of tectonism(sinistral strike-slip, thrust nappe, normal fault, and dextral strike-slip) developed in turn. Geophysical data show that the fault trends almost linearly E–W along a flat, steep gravity gradient at shallow depth, with distinct gravity anomalies to the north and south and different in the north and south. Also, the deep part is characterized by northward dip and a gradual slowing down. Tectonic stress field analysis indicates that the fault experienced four tectonic movements: NNE–SSW compression, NNW–SSE compression, NEE–SWW extension, and E–W compression. Combined with regional tectonic background and previous research results, this indicates that:(1) the Zhouwang fault experienced sinistral strike-slip movement during the Indosinian Period(260–200 Ma);(2) thrust nappes developed during the early Yanshanian Period(163–145 Ma);(3) a normal fault occurred in the late Yanshanian Period(125–65 Ma);and(4) dextral strike-slip movement occurred in the Himalayan Period(ca. 50–37 Ma). The results reveal the tectonic evolution of the fault during Mesozoic deformation in the area, and also reveal the geological evolution and tectonic transformation of the Lower Yangtze region, which is key to our understanding of intracontinental deformation in eastern China.ZHANG Gang CHEN Guangtao REN Shenglian GE Can LIN Shoufa SONG Chuanzhong LI Longming 2022Acta Geologica Sinica(English Edition)2022,96,2:0
19Reversing neuromuscular blocking agent decamethonium by carboxylatopillar[6]arene based on host-guest encapsulation显示文摘Neuromuscular blocking agents(NMBAs)are extensively used during anesthesia to improve surgical conditions by relaxing skeletal muscle movements.Rapid neuromuscular recovery after surgery is desirable to facilitate the recovery of muscle function and prevent residual blockade.Decamethonium(C10)is a classic NMBA,which has been restricted over the past decades ascribed to lack of a suitable antidote in clinic.Herein we used carboxylatopillar[6]arene(CP6A)to reverse neuromuscular blocker effect of C10 through direct host-guest encapsulation.NMR and isothermal titration calorimetry served to confirm the complexation between CP6A and C10 with robust affinity[(1.07±0.14)×10^(7)L/mol].The CP6A was further used as a reversal agent of C10,which facilitated to decrease C10 concentration in mice blood and excrete via urinary clearance,resulting in rapid recovery from muscle relaxation.These favorable outcomes might lead us to suggest that this supramolecular strategy could allow patients to regain lucidity much faster than spontaneous recovery from anesthesia.Yao Chai Longming Chen Yahan Zhang Liang Zhao Zhao Meng Junyi Chen Chunju Li Qingbin Meng 2022Chinese Chemical Letters2022,33,6:0
20Supramolecular liquid barrier for sulfur mustard utilizing host-guest complexation of pillar[5]arene with triethylene oxide substituents显示文摘Sulfur mustard(SM) can be absorbed by skin quickly and cause serious system damage via reacting with nearly all cell constituents. Until now, there is still lack of effective antidotal therapy for SM and skin protection is highly important to defend SM. In this article, supramolecular liquid barrier based on pillar[5]arene with triethylene oxide substituents(EGP5) has been designed to impede the skin permeation of SM and further interaction with the skin tissue. EGP5 could encapsulate SM within its cavity, with a Kavalue of(5.10 ± 0.47) × 10^(2)L/mol. In vitro skin absorption test proved that EGP5 was capable to effectively prevent SM from penetrating through skin. This supramolecular liquid barrier was employed on rat models to systematically evaluate protective effect against SM intoxication. Pretreatment of EGP5could alleviate skin and system damage induced by SM and improve survival rate of poisoned rat models from 10% to 90%. Additionally, EGP5 served as protective materials could be highly reused after recycling several times. Overall, these findings have provided the first insight into the construction of convenient liquid material for SM protection.Yahan Zhang Junyi Chen Longming Chen Liang Zhao Mengke Ma Xinbei Du Zhao Meng Han Zhang Zhibing Zheng Yongan Wang Chunju Li Qingbin Meng 2023Chinese Chemical Letters2023,34,4:0
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