|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Glacial distribution and mass balance in the Yarlung Zangbo River and its influence on lakes显示文摘Glaciers in the Yarlung Zangbo River witness severe glacial retreat nowadays,which gives important influence on lake processes in the region.We have studied glacial distribution,glacial mass balance and found large deficit in glacial mass and its impact in the region.Our study also integrated the variation in glacial-fed lakes of the Nam Co and Ranwu Lake,and presented an initial assessment of the impact of glacial mass balance on lakes.The study has shown a significant contribution of glacial melting to recent lake expansion and lake level rising. | YAO TanDong LI ZhiGuo YANG Wei GUO XueJun ZHU LiPing KANG ShiChang WU YanHong YU WuSheng | 2010 | Chinese Science Bulletin2010，55，20： | 34 |
| 2 | Analysis of pesticide residues in commercially available chenpi using a modified QuEChERS method and GC-MS/MS determination显示文摘To ensure the safety of the commercially available chenpi,a convenient and fast analytical method was developed for the determination of 133 pesticide residues in chenpi using gas chromatography-tandem mass spectrometry(GC-MS/MS).In this study,different extraction solvents,redissolution solvents and adsorbents were tested according to the recovery and purification effect to obtain a modified QuEChERS method.The samples were extracted with acetonitrile.During the clean-up step,octadecyl-modified silica(C18)and graphitized carbon black(GCB)were selected,and aminopropyl(NH2)was used instead of primary secondary amine(PSA)because of its weaker ion exchange capacity which had little effect on the recovery of ditalimfos.Samples were quantified by matrix-matched calibration with internal standards.All pesticides showed good linearity in the respective range,both with values of r2>0.99.The average recoveries of the pesticides spiked samples ranged from 70.0% to 112.2% with the RSDs of 0.2%–14.4%.The modified QuEChERS method was validated and applied to twenty real samples.Five pesticides were found in eight batches,but no pesticide exceeded the maximum residue limits(MRL,MRL reference to European commission). | Shuang Li Peipei Yu Ceng Zhou Ling Tong Dongxiang Li Zhiguo Yu Yunli Zhao | 2020 | Journal of Pharmaceutical Analysis2020，10，1： | 34 |
| 3 | On the timing of the East Asian summer monsoon maximum during the Holocene Does the speleothem oxygen isotope record reflect monsoon rainfall variability?显示文摘The evolution of the East Asian summer monsoon(EASM) during the Holocene has long been of significant interest.Knowledge of past EASM variability not only increases our understanding of monsoon dynamics on a long timescale,but it also provides an environmental and climatic background for research into Chinese cultural development.However,the timing of the EASM maximum remains controversial.The popular concept of an 'early Holocene maximum' is mainly based on speleothemδ^(18)O(δ^(18)O_c) records from caves in southern China;however,the interpretation of δ^(18)O_C as a reliable proxy for EASM intensity is being increasingly challenged.The present paper is a critical review of the climatic significance of the δ^(18)O_C record from China.Firstly,we suggest that precipitation in northern China is an appropriate index of EASM intensity,the variation of which clearly indicates a mid-Holocene monsoon maximum.Secondly,an interregional comparison demonstrates that the precipitation record in northern China is quite different from that in southern China on a range of timescales,and is inconsistent with the spatial similarity exhibited by speleothem oxygen isotope records.Furthermore,both modeling and observational data show that the δ^(18)O_C records from southern China indeed reflect changes in precipitation δ^(18)O(δ^(18)O_P) rather than precipitation amount,and therefore that their use as an EASM proxy is inappropriate.Finally,we address several significant monsoon-related issues-including the driving mechanism of the EASM on an orbital timescale,the climatic significance of speleothem oxygen isotopes,and the relationship between atmospheric circulation and precipitation in monsoonal regions. | CHEN JianHui RAO ZhiGuo LIU JianBao HUANG Wei FENG Song DONG GuangHui HU Yu XU QingHai CHEN FaHu | 2016 | Science China(Information Sciences)2016，59，12： | 18 |
| 4 | Weekly albumin-bound paclitaxel/cisplatin versus gemcitabine/cisplatin as first-line therapy for patients with advanced non-small-cell lung cancer:A phase II open-label clinical study显示文摘Objective: The aim of this trial was to compare both the efficacy and the safety of a weekly nanoparticle albumin-bound paclitaxel(nab-paclitaxel) plus cisplatin vs. gemcitabine plus cisplatin in patients with advanced non-small-cell lung cancer(NSCLC).Methods: A total of 84 participants received either 100 mg/m^2 nab-paclitaxel each week on d 1, 8 and 15 of a 28 day cycle, as well as cisplatin 75 mg/m^2 on d 1 every three weeks(nab-TP arm); or gemcitabine 1,000 mg/m^2 on d 1 and 8, plus cisplatin 75 mg/m^2 on d 1 every three weeks(GP arm). The primary end point was progression-free survival(PFS). The secondary end points were overall response rate(ORR) and overall survival(OS).Results: According to our analysis, the median PFS was 4.8 months for the nab-TP arm vs. 5.2 months for the GP arm(P=0.55). Analysis showed the median OS was 14.6 months for participants who were in the nab-TP arm vs. 15.1 months for those in the GP arm(P=0.94). Besides, nab-TP showed OS advantages over GP in patients harboring epidermal growth factor receptor(EGFR) mutation(26.7 vs. 15.3 months, P=0.046) and patients with a performance status of 0(23.5 vs. 14.7 months, P=0.020). It was found that incidences of drug-related grade 3 or 4 toxicities were comparable between the two treatment arms.Conclusions: Therefore, it can be seen that weekly nab-TP treatment has a similar efficacy and tolerability to GP treatment for patients who are undergoing their first-line treatment for NSCLC. It could be that survival differences among platinum doublets in the context of both EGFR mutation and performance status have the potential to be the basis for our further clinical trials. | Shanshan Qin Hui Yu Xianghua Wu Zhiguo Luo Huijie Wang Si Sun Mingzhu Huang Jia Jin Zhonghua Tao Jie Qiao Yu Feng Jialei Wang Jianhua Chang | 2019 | Chinese Journal of Cancer Research2019，31，2： | 9 |
| 5 | In vitro effect of iASPP on cell growth of oral tongue squamous cell carcinoma显示文摘iASPP is an inhibitory member of the apoptosis-stimulating proteins of P53(ASPP) family. iASPP is over expressed in several malignant tumors and potentially affects cancer progression. However, the expression and potential role of iASPP in oral tongue squamous cell carcinoma(OTSCC) have not been addressed. In our study, we detected iASPP expression in OTSCC by immunohistochemistry. iASPP expression is up-regulated in OTSCC tissues. Moreover, in clinical pathology specimens, we found that increased iASPP expression correlates with poor differentiation and lymph node metastasis. Using multicellular tumor spheroids(MTS) and flow cytometry, we demonstrated that iASPP down-regulation arrests OTSCC cells at the G0/G1 phase, induces OTSCC cell apoptosis and inhibits OTSCC cell proliferation. These results indicate that iASPP plays a significant role in the progression of OTSCC and may serve as a biomarker or therapeutic target for OTSCC patients. | Yu Chen Wangxiang Yan Shuqi He Jiechun Chen Dan Chen Zhaoqiang Zhang Zhiguo Liu Xueqiang Ding Anxun Wang | 2014 | Chinese Journal of Cancer Research2014，26，4： | 7 |
| 6 | Species authentication and geographical origin discrimination of herbal medicines by near infrared spectroscopy:A review显示文摘Near infrared(NIR) spectroscopy as a rapid and nondestructive analytical technique,integrated with chemometrics,is a powerful process analytical tool for the pharmaceutical industry and is becoming an attractive complementary technique for herbal medicine analysis.This review mainly focuses on the recent applications of NIR spectroscopy in species authentication of herbal medicines and their geographical origin discrimination. | Pei Wang Zhiguo Yu | 2015 | Journal of Pharmaceutical Analysis2015，5，5： | 7 |
| 7 | The effect of 2,4-diamino-6-hydroxy-pyrimidine on PoStburn Staphylococcus aureus sepsis in rats显示文摘Objective;GTP-cyclohydrolase I (GTP-CHI) is the first and rate-limiting enzyme for the de novo bio-synthesis of biopterin.The present study was to observe the effect of 2,4-diamino-6-hydroxy-pyrimidine (DAHP),an inbibtor of GTP-CHI,on the development of postburn Staphylococcus aureus sepsis.Methods;56 male Wistarrats were randomly divided into four groups as follows;normal control group (n=10),scald control group(n=10),postburn sepsis group (n=20) and DAHP treatment group (n=16).In the scald control gro... | Li Hongyun Yao Yongming Shi ZhiGuo Dong Ning Yu Yan Lu Lianrong Sheng Zhiyong (C.Y.Sheng) Research Department of Burn Institute,304th Hospital of PLA,Beijing 100037 | 2002 | 感染.炎症.修复2002，3，1： | 6 |
| 8 | Metabonomic analysis of plasma biochemical changes in pyrexia rats after treatment with Gegenqinlian decoction,aspirin and itraconazole by UHPLC-FT-ICR-MS显示文摘A metabonomic approach involving an ultrahigh-performance liquid chromatography combined with Fourier transform ion cyclotron resonance mass spectrometry(UHPLC-FT-ICR-MS)was used to investigate the changes in the endogenous metabolites in the plasma of rats with yeast-induced pyrexia treated with Gegenqinlian decoction(GQLD),aspirin and itraconazole.The differences in the small molecule profiles of treatment using traditional Chinese medicine,etiological treatment and symptomatic treatment were elucidated.Thirty-six plasma metabolites were identified or putatively identified,and the effects of the three medicines on the thirty-six metabolites were studied.Their metabolic pathways indicated that GQLD,aspirin and itraconazole ameliorated the rats with yeast-induced pyrexia predominantly by regulating the metabolisms of phospholipid,sphingolipid,fatty acid oxidation,fatty acid amides,amino acid and glycerolipid in vivo.The pharmacodynamics and metabonomic results showed that the three medicines exhibited the therapeutic effects on pyrexia by regulating the perturbations of multiple metabolisms.The study provided a scientific basis for an in-depth understanding of the therapeutic effects of GQLD,aspirin and itraconazole on rats with yeast-induced pyrexia. | Ting Liu Ruiyun Li Yue Cui Zhiguo Yu Yunli Zhao | 2020 | Journal of Pharmaceutical Analysis2020，10，6： | 6 |
| 9 | Experimental study on anaphylaxis of Qingkailing injection and its components on Beagle dogs显示文摘OBJECTIVE:To study the anaphylaxis of Qingkailing injection(QI) and its components.METHODS:Experimental anaphylactoid and allergic reactions were used.Changes in the behaviors of Beagles and serum levels of histamine,immunoglobulin(Ig)E,IgG,IgM,eosinophil cationic protein(ECP),and interleukin(IL)-4,as well as blood pressure,after injecting QI and its components on the forelimb veins of Beagles were observed.RESULTS:According to comprehensive determination of abnormal behavior scores and changes in serum levels of histamine,IgE,IgG,IgM,ECP,and IL-4,as well as in blood pressure,radix isatidis and hyodeoxycholic acid caused anaphylactoid reactions,and honeysuckle,radix isatidis,hydrolysate,cholic acid and Gardenia jasminoides caused allergic reactions.The anaphylaxis of QI involved anaphylactoid and allergic reactions.CONCLUSION:QI and its components need to be refined further to improve the safety,efficacy,and quality of its use in clinical settings. | Zhiguo Wang Danqiao Wang Yu Sui Haifeng Cui Youhua Yu | 2012 | Journal of Traditional Chinese Medicine2012，32，4： | 6 |
| 10 | Bevacizumab biosimilar LY01008 compared with bevacizumab(Avastin)as first-line treatment for Chinese patients with unresectable,metastatic,or recurrent non-squamous non-small-cell lung cancer:A multicenter,randomized,double-blinded,phase Ⅲ trial显示文摘Background:Previous studies have demonstrated the preclinical pharmacological and toxicological consistency,and clinical pharmacokinetic equivalence of bevacizumab biosimilar LY01008 with reference bevacizumab(Avastin).This randomized controlled trial aimed to compare the efficacy and safety of LY01008 with Avastin in first-line treatment of Chinese patients with advanced or recurrent non-squamous non-small cell lung cancer(NSCLC).Methods:StageⅢB-ⅣNSCLC patients with evaluable lesions,good physical status,and adequate organ functions from 67 centers across China were randomized in a ratio of 1:1 to receive LY01008 or Avastin 15 mg/kg intravenously in combination with paclitaxel/carboplatin(combined treatment)for 4-6 cycles,followed by maintenance monotherapy with LY01008 until disease progression,intolerable toxicity,or death.The primary endpoint was objective response rate(ORR)in accordance with Response Evaluation Criteria in Solid Tumors(RECIST)version 1.1 confirmed by independent radiological review committees(IRRC).Secondary endpoints included disease control rate(DCR),duration of response(DoR),progression-free survival(PFS),overall survival(OS),and safety.This study was registered in Clinical Trials.gov(NCT03533127).Results:Between December 15^(th),2017,and May 15^(th),2019,a total of 649 patients were randomized to the LY01008(n=324)or Avastin(n=325)group.As of September 25th,2019 for primary endpoint analysis,589 patients received ORR evaluation,with a median number of combined treatment cycles of 5(range 1-6)andmedian duration of treatment of 3.0(range 0.0-5.1)months.ORRof responseevaluable patients in the LY01008 and Avastin groups were 48.5% and 53.0%,respectively.The stratified ORR ratio was 0.91(90%CI 0.80-1.04,within the prespecified equivalence margin of 0.75-1.33).Up to May 15^(th),2020,with a median follow-up of 13.6(range 0.8-28.4)months,no notable differences in DCR,median DoR,median PFS,median OS,and 1-year OS rate were observed between the LY01008 and Avastin groups.There were no clinically meaningful differences in safety and immunogenicity across treatment groups.Conclusions:LY01008 demonstrated similarity to Avastin in terms of efficacy and safety in Chinese patients with advanced or recurrent non-squamous NSCLC.LY01008 combined with paclitaxel/carboplatin is expected to become a new treatment option for unresectable,metastatic,LY01008 and Avastin groups.There were no clinically meaningful differences in safety and immunogenicity across treatment groups.Conclusions:LY01008 demonstrated similarity to Avastin in terms of efficacy and safety in Chinese patients with advanced or recurrent non-squamous NSCLC.LY01008 combined with paclitaxel/carboplatin is expected to become a new treatment option for unresectable,metastatic,or recurrent non-squamous NSCLC patients in the first-line setting. | Yuankai Shi Kaijian Lei Yuming Jia Bingqiang Ni Zhiyong He Minghong Bi Xicheng Wang Jianhua Shi Ming Zhou Qian Sun Guolei Wang Dongji Chen Yongqian Shu Lianke Liu Zhongliang Guo Yong Liu Junquan Yang Ke Wang Ke Xiao LinWu Tienan Yi Debin Sun Mafei Kang Tianjiang Ma Yimin Mao Jinsheng Shi Tiegang Tang Yan Wang Puyuan Xing Dongqing Lv Wangjun Liao Zhiguo Luo Bin Wang Xiaohong Wu Xiaoli Zhu Shuhua Han Qisen Guo Rongyu Liu Zhiwei Lu Jianyong Zhang Jian Fang Changlu Hu Yinghua Ji Guolong Liu Hong Lu Dedong Wu Junhong Zhang Shuyang Zhu Zheng Liu Wensheng Qiu Feng Ye Yan Yu Yanqiu Zhao Qinhong Zheng Jun Chen Zhanyu Pan Yiping Zhang Wenjuan Lian Bo Jiang Bo Qiu Guojun Zhang Hua Zhang Yanju Chen Yuan Chen Hongbing Duan Manxiang Li Shengming Liu Lijun Ma Hongming Pan Xia Yuan Xueli Yuan Yulong Zheng Emei Gao Li Zhao Shumin Wang Can Wu | 2021 | Cancer Communications2021，41，9： | 5 |
| 11 | Review of Molecular Simulation Method for Gas Adsorption/desorption and Diffusion in Shale Matrix显示文摘Shale gas is becoming an increasingly promising alternative energy resource because of its high efficiency and environment-friendly characteristic. The amount of adsorbed gas on the shale matrix surfaces and dissolved gas in the shale matrix bulk is the dominant factor in the long-term productivity of shale reservoir. Although experimental measurements have been extensively carried out to investigate the gas adsorption and diffusion properties in the shale matrix, they cannot provide the detailed information on the microscopic transport mechanism of shale gas during the gas production process. Molecular simulation can accurately visualize the gas adsorption/desorption and diffusion processes in the shale matrix. In the present study, the recent research advances of molecular simulation on gas adsorption/desorption and diffusion in the shale matrix are reviewed. Firstly, the density functional theory(DFT) for shale gas molecule desorption/adsorption on the surface of the matrix crystal is illustrated. Then, the grand canonical Monte Carlo(GCMC) method predicting the amount of shale gas desorption/adsorption in the shale matrix crystal is introduced. Finally, molecular dynamics simulation(MD) for gas diffusion in the shale matrix is elucidated. Further developments of the molecular simulation method in shale gas production are also discussed. | WANG Hui QU Zhiguo YIN Ying BAI Junqiang YU Bo | 2019 | Journal of Thermal Science2019，28，1： | 4 |
| 12 | Characterizing the induction of diabetes in juvenile cynomolgus monkeys with different doses of streptozotocin显示文摘Juvenile(2-3 years old) cynomolgus monkeys are frequently used as recipients in non-human primate islet transplantation studies.The aim of this study was to examine the effects of different doses of streptozotocin(STZ),and find the optimal dose for inducing diabetes in these monkeys.Fifteen juvenile(2-3 years old) cynomolgus monkeys were separated into three groups and administered with different doses of STZ(100,68 or 60 mg kg-1).Basal and glucose-stimulated blood glucose,insulin,and C-peptide levels,as well as body weights were monitored.Hepatic and renal function tests and pancreatic immunohistochemistry were performed before and after STZ treatment.Monkeys treated with both 100 and 68 mg kg-1 of STZ exhibited continuous hyperglycemia,which coincided with a nearly complete loss of islet--cells.Two monkeys received 60 mg kg-1 of STZ,but only one became completely diabetic.During the first week following STZ treatment,hepatic and renal function slightly increased in these three groups.However,24 hours post-STZ,serum total bile acid levels were significantly increased in monkeys treated with 100 mg kg-1 than those treated with 68 mg kg-1 of STZ(P<0.05).These data suggest that 100 mg kg-1 and 68 mg kg-1 of STZ can safely induce diabetes in cynomolgus monkeys aged 2-3 years,but 68 mg kg-1 of STZ,rather than 100 mg kg-1 of STZ,may be more appropriate for inducing diabetes in these monkeys.Furthermore,body surface area,rather than body weight,was a more reliable determinant of dosage,where 700 mg m-2 of STZ should be the lower limit for inducing diabetes in juvenile monkeys. | ZOU ChunLin WANG JiaYin WANG ShuYan HUANG Fen REN ZhenHua CHEN ZhiGuo ZHANG YU | 2012 | Science China(Life Sciences)2012，55，3： | 3 |
| 13 | Novel Zero-Watermarking Scheme Based on DWT-DCT显示文摘Essential characteristics for watermark registration and detection without data modification can be used in anaudio zero-watermarking scheme.In this paper,a novel audio zero-watermarking scheme based on discrete wavelet transform(DWT) and discrete cosine transform(DCT) is presented.Thewatermark is registered by comparing the mean absolute values of the adjacent frame coefficients after DWT and DCT.Simulation results show that the proposed scheme is stronglyrobusttocommon attacks such as AWGN,downsampling,low-pass filtering,requantization,and MP3 compression.A performance analysis of the proposed scheme shows that all bit error rates after attacks are zero. | Yu Yang Min Lei Xiaoming Liu Zhiguo Qu Cheng Wang | 2016 | China Communications2016，13，7： | 3 |
| 14 | Robust key point descriptor for multi-spectral image matching显示文摘Histogram of collinear gradient-enhanced coding(HCGEC), a robust key point descriptor for multi-spectral image matching, is proposed. The HCGEC mainly encodes rough structures within an image and suppresses detailed textural information,which is desirable in multi-spectral image matching. Experiments on two multi-spectral data sets demonstrate that the proposed descriptor can yield significantly better results than some state-ofthe-art descriptors. | Yueming Qin Zhiguo Cao Wen Zhuo Zhenghong Yu | 2014 | Journal of Systems Engineering and Electronics2014，25，4： | 3 |
| 15 | Ion association tailoring SEI composition for Li metal anode protection显示文摘Electrolyte additives play an important role in suppressing lithium dendrites through tailoring the composition/property of the SEI,however lacking of additives can achieve high performances both in ether and carbonate electrolytes hinders further enhancement of the high voltage lithium^-metal batteries.Here,lithium perchlorate(LiClO4)has been presented as an excellent additive to meet the above requirements.An optimized chemical composition of SEI can be achieved through the formation of ionic association.Our results indicate that the LiClO4 behaves like a catalyst,which promotes LiTFSI to form a better SEI to inhibit further reaction.Superior coulombic efficiencies and cycling performances were obtained both in ether and carbonate electrolytes.This study paves a new pathway for designing bi-soluble additives for safe lithium metal batteries. | Yitao He Yaohui Zhang Peng Yu Fei Ding Xifei Li Zhihong Wang Zhe Lv Xianjie Wang Zhiguo Liu Xiqiang Huang | 2020 | Journal of Energy Chemistry2020，29，6： | 2 |
| 16 | Composition analysis and antioxidant activities of the Rhus typhina L.stem显示文摘The present investigation reports the chemical composition of the Rhus typhina L. stem identified via mass spectrometry and NMR as gallic acid, 1-O-galloyl-β-D-glucose, tryptophan, scopolin, methyl gallate, fustin, quercetin, rutin, and 1,2,3,4,6-penta-O-galloyl-β-D-glucose. The antioxidant properties and the chemical composition contents of the R. typhina L. stem grown in different regions in China were determined. To determine the antioxidant activity, a total phenolic content analysis, 2, 2-diphenyl-1-picrylhydrazyl radical scavenging activity assay, ferric reducing antioxidant power assay, and β-carotene linoleic acid model system were conducted. The results showed that the Rhus typhina L. stem possessed high antioxidant capacities due to its high phenolic content. The contents of the nine isolated compounds were determined by UPLC-ESI-MS/MS. The calibration curves of the nine isolated compounds were linear within the concentration range and the average recoveries were high. The result showed that 1-Ogalloyl-β-D-glucose, gallic acid, methyl gallate, and 1,2,3,4,6-penta-O-galloyl-β-D-glucose could be the compounds mainly responsible for the antioxidant capacity of the R. typhina L. stem. This reveals that the R. typhina L. stem is a good source of antioxidants. | Ting Liu Zhaoqin Li Ruiyun Li Yue Cui Yunli Zhao Zhiguo Yu | 2019 | Journal of Pharmaceutical Analysis2019，9，5： | 2 |
| 17 | Strong room-temperature emission from defect states in CVD-grown WSe2 nanosheets显示文摘 | Shudong Zhao Lei Tao Peng Miao Xianjie Wang Zhiguo Liu Yi Wang Bingsheng Li Yu Sui Yang wang | 2018 | Nano Research2018，11，7： | 2 |
| 18 | Growth responses and cadmium accumulation of Mirabilis jalapa L. under interaction between cadmium and phosphorus显示文摘 | Zhiguo Yu Qixing Zhou | 2008 | Journal of Hazardous Materials2008，，1： | 2 |
| 19 | The effects of straw‑returning and inorganic K fertilizer on the carbon–nitrogen balance and reproductive growth of cotton显示文摘Background:Many studies have indicated that straw-returning could meet part or even all of the potassium(K)demand for crop growth in the field,but few have compared the effects of crop straw as K source and inorganic K fertilizer on carbon–nitrogen(C–N)balance of cotton and the reproductive growth.To address this,field experiments were conducted using the cotton cultivar,Siza 3,under there treatments(CK as control group one,no crop straw and inorganic K fertilizer were applied;K150 as control group two,150 kg·ha^(-1) of K2O was applied;and W9000,9000 kg·ha^(-1) wheat straw,which could provide K2O about 150 kg·ha^(-1),was incorporated into soil).Results:Although the final reproductive organ biomass did not differ between W9000 and K150,W9000 had a higher ratio of reproductive organ biomass to total biomass(RRT),suggesting that straw-returning was more conducive to the allocation of biomass to reproductive organs.The theoretical maximum biomass of reproductive organ was higher,but the average and maximum accumulation rates of reproductive organ biomass were 2.8%∼8.3%and 2.5%∼8.2%lower under W9000 than K150.Also,the duration of rapid-accumulation period for reproductive organ biomass(T)was 2.0∼2.8 d longer under W9000 than K150,which was a reason for the higher RRT under W9000.Straw-returning altered the dynamics of leaf K with the growth period,so that W9000 had a more drastic effect on leaf C metabolism than K150.Consequently,lower soluble sugar/free amino acid and C/N ratios were measured under W9000 than K150 at boll-setting(BSS)and boll-opening(BOS)stages.Higher leaf net photosynthetic rate,sucrose phosphate synthase and sucrose synthase activities,and lower acid invertase activity were observed under W9000 than K150 at BSS and BOS and these were more conducive to sucrose accumulation.However,less sucrose was measured under W9000 than K150 at these stages.This should be because straw-returning promoted the assimilate transport capacity when compared with inorganic K fertilizer application,which also explained the higher RRT under W9000 than K150.The lower acid invertase activity under W9000 inhibited the conversion of sucrose to other sugars,hence lower contents of soluble sugar and starch were measured under W9000 than K150.Conclusion:Under low K condition,crop straw as K source can increase the assimilate transport from source to sink,leading to lower C/N ratio in leaf and higher allocation of biomass to reproductive organs than inorganic K fertilizer. | HU Wei YU Chaoran ZHAO Wenqing LIU Ruixian YANG Changqinand ZHOU Zhiguo | 2021 | Journal of Cotton Research2021，4，4： | 2 |
| 20 | QoE Assessment and Prediction Method for HighDefinition Video Stream Using Image Damage Accumulation显示文摘The accuracy of the traditional assessment method of the quality of experience(Qo E) has been facing challenges with the growth of high-definition(HD) video streaming services.Image display-quality damage is the main factor that affects the Qo E in HD video services through UDP network transmission.In this paper,we introduce a novel objective factor known as image damage accumulation(IDA) to assess user's Qo E in HD video services.First,this paper quantitatively analyzed the effect on user quality of experience by IDA and established a mapping relationship between mean opinion scores and IDA.Furthermore,the probability of image damage caused by compression and transmission were analyzed.Based on this analysis,an objective Qo E assessment and prediction method for HD video stream service that evaluated the user experience according to IDA are proposed.The proposed method can achieve assessment and prediction accuracy on three distinct subjective tests. | Yang Geng Luoming Meng Yao Wang Yu Yang Zhiguo Qu | 2016 | China Communications2016，13，7： | 2 |
您所在的机构暂未开通此部分的功能，请联系管理员