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| 1 | Natural variation in Ghd7.1 plays an important role in grain yield and adaptation in rice显示文摘 | Wenhao Yan Haiyang Liu Xiangchun Zhou Qiuping Li Jia Zhang Li Lu Touming Liu Haijun Liu Chengjun Zhang Zhanyi Zhang Guojing Shen Wen Yao Huaxia Chen Sibin Yu Weibo Xie Yongzhong Xing | 2013 | Cell Research2013，23，7： | 39 |
| 2 | Senome-wide Association Studies in Maize: Praise and Stargaze显示文摘 | Yingjie Xiao Haijun Liu Liuji Wu Marilyn Warburton Jianbing Yan | 2017 | Molecular Plant2017，10，3： | 27 |
| 3 | Scour and silting evolution and its influencing factors in Inner Mongolian Reach of the Yellow River显示文摘有河的平衡的河被床变丑调整描绘。在剖面图的侵蚀免职区域反映这个特征,它是研究河的一个底搜索并且由时间系列分析的免职进化。与在这篇论文建议的一个侵蚀免职区域指示物方法,在 Bygl 和 Shhk 车站的侵蚀免职区域数量的时间系列从 1976 ~ 2006 与 31 年的系列持续时间被获得。在它的趋势和变化的分析以后,关于进化的三个不同趋势通过快速的收缩从伪平衡阶段一般来说被观察到最后的新伪平衡。一旦大洪水发生在一些支流,侵蚀免职区域系列的趋势将变化,这也被发现一旦大洪水发生在一些支流,并且它的曾经更大的影响由于有在上游的水库的结束的洪水的减少。几乎所有转弯的点与超沉积洪水发生在一些支流的时间是重合的。与清楚的变化的时间系列自从 1990 年代末,内部蒙古的活动范围在一个新平衡阶段。这能在二个方面被结束。1。从在河收缩的支流结果的大洪水和沉积交通的缺席,并且重获隧道在内部蒙古的活动范围的带流动的能力大洪水高山峰分泌物并且过长的间隔被需要破坏新平衡。2。因为它能在数量表明生气的节的实时变丑,侵蚀免职区域指示物的建议方法具有到隧道搜索免职进化分析的大帮助。 | QIN Yi ZHANG Xiaofang WANG Fenglong YAN Heng HAN Haijun | 2011 | Journal of Geographical Sciences2011，21，6： | 14 |
| 4 | ZmCOL3, a CCT gene represses flowering in maize by interfering with the circadian clock and activating expression of ZmCCT显示文摘Flowering time is a trait vital to the adaptation of flowering plants to different environments.Here, we report that CCT domain genes play an important role in flowering in maize(Zea mays L.).Among the 53 CCT family genes we identified in maize, 28 were located in flowering time quantitative trait locus regions and 15 were significantly associated with flowering time, based on candidate-gene association mapping analysis.Furthermore, a CCT gene named ZmCOL3 was shown to be a repressor of flowering.Overexpressing ZmCOL3 delayed flowering time by approximately 4 d, in either long-day or short-day conditions.The absence of one cytosine in the ZmCOL3 3'UTR and the presence of a 551 bp fragment in the promoter region are likely the causal polymorphisms contributing to the maize adaptation from tropical to temperate regions.We propose a modified model of the maize photoperiod pathway, wherein ZmCOL3 acts as an inhibitor of flowering either by transactivating transcription of ZmCCT, one of the key genes regulating maize flowering, or by interfering with the circadian clock. | Minliang Jin Xiangguo Liu Wei Jia Haijun Liu Wenqiang Li Yong Peng Yanfang Du Yuebin Wang Yuejia Yin Xuehai Zhang Qing Liu Min Deng Nan Li Xiyan Cui Dongyun Hao Jianbing Yan | 2018 | Journal of Integrative Plant Biology2018，60，6： | 14 |
| 5 | Distant eQTLs and Non-coding Sequences Play Critical Roles in Regulating Gene Expression and Quantitative Trait Variation in Maize显示文摘 | Haijun Liu Xin Luo Luyao Niu Yingjie Xiao Lu Chen Jie Liu Xiaqing Wang Minliang Jin Wenqiang Li Qinghua Zhang Jianbing Yan | 2017 | Molecular Plant2017，10，3： | 13 |
| 6 | Quantitative estimation of climate change effects on potential evapotranspiration in Beijing during 1951-2010显示文摘Climate change is likely to affect hydrological cycle through precipitation,evapotranspiration,soil moisture etc.In the present study,an attempt has been made to study the climate change and the sensitivity of estimated evapotranspiration to each climatic variable for a semi-arid region of Beijing in North China using data set from 1951 to 2010.Penman-Monteith method was used to calculate reference crop evapotranspiration(ETo).Changes of ETo to each climatic variable was estimated using a sensitivity analysis method proposed in this study.Results show that in the past 60 years,mean temperature and vapor pressure deficit(VPD) were significantly increasing,relative humidity and sunshine hours were significantly decreasing,and wind speed greatly oscillated without a significant trend.Total precipitation was significantly decreasing in corn season(from June to September),but it was increasing in wheat season(from October to next May).The change rates of temperature,relative humidity,VPD,wind speed,annual total precipitation,sunshine hours and solar radiation were 0.42℃,1.47%,0.04 kPa,0.05 m·s–1,25.0 mm,74.0 hours and 90.7 MJ·m–2per decade,respectively.In the past 60 years,yearly ETo was increasing with a rate of 19.5 mm per decade,and total ETos in wheat and corn seasons were increasing with rates of 13.1 and 5.3 mm per decade,respectively.Sensitivity analysis showed that mean air temperature was the first key factor for ETo change in the past 60 years,causing an annual total ETo increase of 7.4%,followed by relative humidity(5.5%) and sunshine hours(–3.1%);the less sensitivity factors were wind speed(0.7%),minimum temperature(–0.3%) and maximum temperature(–0.2%).A greater reduction of total ETo(12.3%) in the past 60 years was found in wheat season,mainly because of mean temperature(8.6%) and relative humidity(5.4%),as compared to a reduction of 6.0% in ETo during corn season due to sunshine hours(–6.9%),relative humidity(4.7%) and temperature(4.5%).Increasing precipitation in the wheat season will improve crop growth,while decreasing precipitation and increasing ETo in the corn season induces a great pressure for local government and farmers to use water more efficiently by widely adopting water-saving technologies in the future. | LIU Haijun LI Yan JOSEF Tanny ZHANG Ruihao HUANG Guanhua | 2014 | Journal of Geographical Sciences2014，24，1： | 10 |
| 7 | An Arctic sea ice thickness variability revealed from satellite altimetric measurements显示文摘A modified algorithm taking into account the first year(FY) and multiyear(MY) ice densities is used to derive a sea ice thickness from freeboard measurements acquired by satellite altimetry ICESat(2003–2008). Estimates agree with various independent in situ measurements within 0.21 m. Both the fall and winter campaigns see a dramatic extent retreat of thicker MY ice that survives at least one summer melting season. There were strong seasonal and interannual variabilities with regard to the mean thickness. Seasonal increases of 0.53 m for FY the ice and 0.29 m for the MY ice between the autumn and the winter ICESat campaigns, roughly 4–5 month separation, were found. Interannually, the significant MY ice thickness declines over the consecutive four ICESat winter campaigns(2005–2008) leads to a pronounced thickness drop of 0.8 m in MY sea ice zones. No clear trend was identified from the averaged thickness of thinner, FY ice that emerges in autumn and winter and melts in summer. Uncertainty estimates for our calculated thickness, caused by the standard deviations of multiple input parameters including freeboard, ice density, snow density, snow depth, show large errors more than 0.5 m in thicker MY ice zones and relatively small standard deviations under 0.5 m elsewhere. Moreover, a sensitivity analysis is implemented to determine the separate impact on the thickness estimate in the dependence of an individual input variable as mentioned above. The results show systematic bias of the estimated ice thickness appears to be mainly caused by the variations of freeboard as well as the ice density whereas the snow density and depth brings about relatively insignificant errors. | BI Haibo HUANG Haijun SU Qiao YAN Liwen LIU Yanxia XU Xiuli | 2014 | Acta Oceanologica Sinica2014，33，11： | 8 |
| 8 | Characterization of 500 Chinese patients with cervical esophageal cancer by clinicopathological and treatment outcomes显示文摘Objective: There are no comprehensive studies on survival outcomes and optimal treatment protocols for cervical esophageal cancer(CEC), due to its rare clinical prevalence. Our objective was to determine the relationship between pathological characteristics, treatment protocols, and survival outcomes in Chinese CEC patients.Methods: A total of 500 Chinese CEC patients were selected from our 500,000 esophageal and gastric cardia carcinoma database(1973–2018). There were two main groups: patients treated with surgery, and patients receiving non-surgical treatments(radiotherapy, radiochemotherapy, and chemotherapy). The Chi-square test and Kaplan–Meier method were used to compare the continuous variables and survival.Results: Among the 500 CEC patients, 278(55.6%) were male, and the median age was 60.9 ± 9.4 years. A total of 496 patients(99.2%) were diagnosed with squamous cell carcinoma. In 171(34.2%) patients who received surgery, 22(12.9%) had undergone laryngectomy. In 322(64.4%) patients who received non-surgical treatments, 245(76.1%) received radiotherapy. Stratified survival analysis showed that only T stage was related with survival outcomes for CEC patients in the surgical group, and the outcomes between laryngectomy and non-laryngectomy patients were similar. It was noteworthy that the 5-year survival rate was similar in CEC patients among the different groups treated with surgery, radiotherapy, chemotherapy, or radiochemotherapy(P = 0.244). Conclusions: The CEC patients had similar survival outcomes after curative esophagectomy and radiotherapy, including those with or without total laryngectomy. These findings suggest that radiotherapy could be the initial choice for treatment of Chinese CEC patients. | Peinan Chen Xueke Zhao Fuyou Zhou Xin Song Shoujia Hu Yan Jin Xianzeng Wang Xuena Han ZongminFan Ran Wang Bei Li Wenli Han Panpan Wang Jilin Li Lixin Wan Liguo Zhang Qide Bao Fubao Chang Yanru Qin Zhiwei Chang Jianwei Ku Haijun Yang Ling Yuan Jingli Ren Xuemin Li Lidong Wang | 2020 | Cancer Biology & Medicine2020，17，1： | 6 |
| 9 | Genomic, Transcriptomic, and Phenomic Variation Reveals the Complex Adaptation of Modern Maize Breeding显示文摘 | Haijun Liu Xiaqing Wang Marilyn L. Warburton Weiwei Wen Minliang Jin Min Deng Jie Liu Hao Tong Qingchun Pan Xiaohong Yang Jianbing Yan | 2015 | Molecular Plant2015，8，6： | 6 |
| 10 | esveratrol inhibits necroptosis by mediating the TNF-α/RIP1/RIP3/MLKL pathway in myocardial hypoxia/reoxygenation injury显示文摘Resveratrol(RES)protects myocardial cells from hypoxia/reoxygenation(H/R)-caused injury.However,the mechanism of this effect has not been clarified.Thus,in this study,we aimed to determine whether RES attenuates H/R-induced cell necroptosis by inhibiting the tumor necrosis factor-alpha(TNF-α)/receptor-interacting protein kinase 1(RIP1)/RIP3/mixed-lineage kinase domain-like(MLKL)signaling pathway.Rat myocardial ischemia/reperfusion(I/R)models and H/R-injured cell models were constructed.Our study showed that myocardial H/R injury significantly increased the levels of TNF-α,RIP1,RIP3,and p-MLKL/MLKL by western blot analysis.Cell viability assay and 4,6-dianmidino-2-phenylindole(DAPI)-propidium iodide staining showed that the cell viability was decreased,and necroptosis was increased after myocardial H/R injury.The expressions of TNF-α,RIP1,RIP3,and p-MLKL/MLKL in H/R myocardial cells treated with different concentrations of RES were significantly downregulated.In addition,we also found that the cell viability was increased and necroptosis was decreased in dose-dependent manners when H/R-injured cells were treated with RES.In addition,the enhanced effect of TNF-αon necroptosis in myocardial H/R-injured cells was improved by RES,and the effect of RES was confirmed in vivo in I/R rats.This study also showed that RES suppresses necroptosis in H9c2 cells,which may occur through the inhibition of the TNF-α/RIP1/RIP3/MLKL signaling pathway.Our data suggest that necroptosis is a promising therapeutic target and may be a promising therapeutic target for the treatment of myocardial I/R injury. | Yongjun Hu Hongwei Pan Jianqiang Peng Jin He Mingxiang Tang Sulan Yan Jingjing Rong Junshan Li Zhaofen Zheng Haijun Wang Yanfu Liu Xin Zhong | 2021 | Acta Biochimica et Biophysica Sinica2021，53，4： | 6 |
| 11 | Arctic sea ice volume export through the Fram Strait from combined satellite and model data:1979–2012显示文摘By combing satellite-derived ice motion and concentration with ice thickness fields from a popular model PIOMAS we obtain the estimates of ice volume flux passing the Fram Strait over the 1979–2012 period. Since current satellite and field observations for sea ice thickness are limited in time and space, the use of PIOMAS is expected to fill the gap by providing temporally continued ice thickness fields. Calculated monthly volume flux exhibits a prominent annual cycle with the peak record in March(roughly 145 km3/month) and the trough in August(10 km^3/month). Annual ice volume flux(1 132 km^3) is primarily attributable to winter(October through May) outflow(approximately 92%). Uncertainty in annual ice volume export is estimated to be 55 km^3(or 5.7%). Our results also verified the extremely large volume flux appearing between late 1980 s and mid-1990 s. Nevertheless, no clear trend was found in our volume flux results. Ice motion is the primary factor in the determination of behavior of volume flux. Ice thickness presented a general decline trend may partly enhance or weaken the volume flux trend. Ice concentration exerted the least influences on modulating trends and variability in volume flux. Moreover, the linkage between winter ice volume flux and three established Arctic atmospheric schemes were examined. Compared to NAO, the DA and EOF3 mechanism explains a larger part of variations of ice volume flux across the strait. | ZHANG Zehua BI Haibo SUN Ke HUANG Haijun LIU Yanxia YAN Liwen | 2017 | Acta Oceanologica Sinica2017，36，1： | 4 |
| 12 | Large-Scale Discovery of Non-conventional Peptides in Maize and Arabidopsis through an Integrated Peptidogenomic Pipeline显示文摘Non-conventional peptides(NCPs),which include small open reading frame-encoded peptides,play critical roles in fundamental biological processes.In this study,we developed an integrated peptidogenomic pipeline using high-throughput mass spectra to probe a customized six-frame translation database and applied it to large-scale identification of NCPs in plants.A total of 1993 and 1860 NCPs were unambiguously identified in maize and Arabidopsis,respectively.These NCPs showed distinct characteristics compared with conventional peptides and were derived from introns,3′UTRs,5′UTRs,junctions,and intergenic regions.Furthermore,our results showed that translation events in unannotated transcripts occur more broadly than previously thought.In addition,we found that dozens of maize NCPs are enriched within regions associated with phenotypic variations and domestication selection,indicating that they potentially are involved in genetic regulation of complex traits and domestication in maize.Taken together,our study developed an integrated peptidogenomic pipeline for large-scale identification of NCPs in plants,which would facilitate global characterization of NCPs from other plants.The identification of large-scale NCPs in both monocot(maize)and dicot(Arabidopsis)plants indicates that a large portion of plant genome can be translated into biologically functional molecules,which has important implications for functional genomic studies. | Shunxi Wang Lei Tian Haijun Liu Xiang Li Jinghua Zhang Xueyan Chen Xingmeng Jia Xu Zheng Shubiao Wu Yanhui Chen Jianbing Yan Liuji Wu | 2020 | Molecular Plant2020，13，7： | 4 |
| 13 | Effects of cerium substitution on phase components, microstructures and magnetic properties of Nd-Fe-Ti-B alloy显示文摘(Nd(1-x)Cex)(12)Fe(77)Ti5B6(x=0,0.2,0.3,0.4,0.6,0.8)alloys were prepared by melt-spinning and annealing techniques.The phase constitutions,microstructures and magnetic properties were investigated by powder X-ray diffraction(XRD),a differential scanning calorimeter(DSC),a vibrating sample magnetometer(VSM)and a transmission electron microscope(TEM).It is found that with the increase of Ce content,the coercivity of the(Nd(1-x)Cex)(12)Fe(77)Ti5B6 alloys reaches maximum first and then decreases.The maximum coercivity reaches 18.5 kOe obtained in the sample of 20%Ce substituted which is 34%higher than the Ce-free sample.TEM results reveal that the micro structure refinement effect is responsible for the coercivity improvement.This phenomenon implies that in some cases,Ce and Ti co-doping is more beneficial to improving of the coercivity than Ti single doping in Nd-Fe-B alloys.With further Ce addition,magnetic properties deteriorate due to the formation of CeFe2 and TbCu7-type phases. | Haijun Peng Yang Luo Yakun Dou Xinyuan Bai Wenlong Yan Dunbo Yu Yuanfei Yang Shulin Diao | 2019 | Journal of Rare Earths2019，37，8： | 4 |
| 14 | First experimental constraints on WIMP couplings in the effective field theory framework from CDEX显示文摘We present weakly interacting massive particles(WIMPs) search results performed using two approaches of effective field theory from the China Dark Matter Experiment(CDEX), based on the data from both CDEX-1B and CDEX-10 stages. In the nonrelativistic effective field theory approach, both time-integrated and annual modulation analyses were used to set new limits for the coupling of WIMP-nucleon effective operators at 90% confidence level(C.L.) and improve over the current bounds in the low mχregion. In the chiral effective field theory approach, data from CDEX-10 were used to set an upper limit on WIMP-pion coupling at 90% C.L. We for the first time extended the limit to the m_(χ)<6 GeV/c^(2) region. | Yi Wang Zhi Zeng Qian Yue LiTao Yang KeJun Kang YuanJing Li Mehment Agartioglu HaiPeng An JianPing Chang JingHan Chen YunHua Chen JianPing Cheng Cheng Yi Chiang WenHan Dai Zhi Deng ChangHao Fang XinPing Geng Hui Gong QiuJu Guo XuYuan Guo HongJian He Li He ShengMing He JinWei Hu TuChen Huang HanXiong Huang HaiTao Jia LiPing Jia Xi Jiang HauBin Li JianMin Li Jin Li MingXuan Li RenMingJie Li Xia Li YuLan Li Bin Liao FongKay Lin ShinTed Lin ShuKui Liu YanDong Liu Yu Liu YuanYuan Liu ZhongZhi Liu Hao Ma YuCai Mao QiYuan Nie JinHua Ning Hui Pan NingChun Qi Jie Ren XiChao Ruan ChangSong Shang Vivek Sharma Ze She Lakhwinder Singh Monoj Kumar Singh TianXi Sun ChangJian Tang WeiYou Tang Yang Tian GuangFu Wang Li Wang Qing Wang Yu Chen Wang YunXiang Wang Zhen Wang Henry Tsz-King Wong ShiYong Wu YuCheng Wu HaoYang Xing Yin Xu Tao Xue YuLu Yan Nan Yi ChunXu Yu HaiJun Yu JianFeng Yue Ming Zeng BingTao Zhang Lei Zhang FengShou Zhang ZhenYu Zhang KangKang Zhao MingGang Zhao JiFang Zhou ZuYing Zhou JingJun Zhu | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，8： | 3 |
| 15 | Ultrasound speed and attenuation in progressive trypsin digested articular cartilage显示文摘Subtle changes of articular cartilage(AC) can lead to tissue degeneration and even osteoarthritis(OA).The early degeneration of AC is closely related to a change in proteoglycans(PG) content.The observation of PG is therefore an appropriate way of studying OA and evaluating the degree of AC degeneration.In this study,20 cartilage-bone samples were prepared from normal porcine femoral condyle cartilage and 10 samples were digested over 2 h using 0.25% trypsin solution.The dynamic process of PG-digestion was explored using a conventional A-mode ultrasound(US) experimental system with a 10 MHz center frequency.Quantitative acoustic parameters were calculated from ultrasonic radio-frequency echo signals and included US speed(USS),US amplitude attenuation coefficient(UAA) and broadband US attenuation coefficient(BUA).The experimental results showed that the conventional A-mode ultrasound is valuable for tracking the degree of PG-digestion.Histology also confirmed the validity of the ultrasound observations.For every AC sample,the degree of PG-digestion within a given time was different and was affected by individual differences.After two hours of degeneration,USS showed a mean decrease of 0.4%(P<0.05).UAA was significantly lower after a two-hour PG depletion period(from(2.45±0.23) to(2.28±0.41) dB mm?1).BUA showed no significant differences during this process.In conclusion,conventional ultrasound can provide useful information about trypsin-induced progressive PG depletion in AC and can reflect variations of PG content via the quantitative acoustic parameters USS and UAA.The results of this study may be used to identify an indirect indicator of cartilage matrix integrity and OA disease progression. | NIU HaiJun LI LiFeng SUN Feng YAN Yan WANG YueXiang LI DeYu FAN YuBo | 2011 | Science China(Life Sciences)2011，54，11： | 3 |
| 16 | Cooperation between Pt and Ru on RuPt/AC bimetallic catalyst in the hydrogenation of phthalates显示文摘RuPt/AC bimetallic catalysts were pre pared by two-step incipient impregnation method and evaluated in the hydrogenation of phthalates.According to the characterization results,well dispersed Ru Pt bimetallic nanoparticles were formed on the catalyst,and the strong interaction between the two metals resulted in the formation of RuPt alloy.It was found that Ru can donate electrons to Pt on RuPt alloy nanoparticles,leading to the formation of electron-deficient Ru which significantly promotes the hydrogenation rate of dioctyl phthalate and improves the selectivity of dioctyl di-2-ethylhexylcyclohexane-1,4-dicarboxylate by accelerating the further hydrogenation of intermediate products.The bimetallic RuPt catalyst also presented excellent stability and versatility in the hydrogenation of phthalates,demonstrating its prospective future in the hydrogenation of aromatic ring contained compounds. | Yan Xu Chenguang Wu Yan Wang Ying Zhang Han Sun Haijun Chen Yujun Zhao | 2021 | Chinese Chemical Letters2021，32，1： | 3 |
| 17 | Noncontrast-enhanced MRI-based Noninvasive Score for Portal Hypertension(CHESS1802):An International Multicenter Study显示文摘Background and Aims:This study aimed to determine the performance of the non-invasive score using noncontrastenhanced MRI(CHESS-DIS score)for detecting portal hy-pertension in cirrhosis.Methods:In this international multicenter,diagnostic study(ClinicalTrials.gov,NCT03766880),patients with cirrhosis who had hepatic venous pressure gradient(HVPG)measurement and noncontrast-enhanced MRI were prospectively recruited from four university hospitals in China(n=4)and Turkey(n=1)between December 2018 and April 2019.A cohort of patients was retrospectively recruited from a university hospital in Italy between March 2015 and November 2017.After segmentation of the liver on fat-suppressed T1-weighted MRI maps,CHESS-DIS score was calculated automatically by an in-house developed code based on the quantification of liver surface nodularity.Results:A total of 149 patients were included,of which 124 were from four Chinese hospitals(training cohort)and 25 were from two international hospitals(validation cohort).A positive correlation between CHESS-DIS score and HVPG was found with the correlation coefficients of 0.36(p<0.0001)and 0.55(p<0.01)for the training and validation cohorts,respectively.The area under the receiver operating characteristic curve of CHESS-DIS score in detection of clinically significant portal hypertension(CSPH)was 0.81 and 0.9 in the training and validation cohorts,respectively.The intra-class correlation coefficients for assessing the inter-and intra-observer agreement were 0.846 and 0.841,respectively.Conclusions:A non-invasive score using noncontrast-enhanced MRI was developed and proved to be significantly correlated with invasive HVPG.Besides,this score could be used to detect CSPH in patients with cirrhosis. | Yanna Liu Tianyu Tang NecatiÖrmeci Yifei Huang Jitao Wang Xiaoguo Li Zhiwei Li Weimin An Dengxiang Liu Chunqing Zhang Changchun Liu Jinqiang Liu Chuan Liu Guangchuan Wang Cristina Mosconi Alberta Cappelli Antonio Bruno Seray Akçalar EmrecanÇelebioğlu EvrenÜstüner Sadık Bilgiç Zeynep Ellik ÖzgünÖmer Asiller Lei Li Haijun Zhang Ning Kang Dan Xu Ruiling He Yan Wang Yang Bu Ye Gu Shenghong Ju Rita Golfieri Xiaolong Qi | 2021 | Journal of Clinical and Translational Hepatology2021，9，6： | 3 |
| 18 | Bounding the Inefficiency of the C-Logit Stochastic User Equilibrium Assignment显示文摘Compared with standard logit-based stochastic user equilibrium assignment model,the C-logit model describes route choice behavior in a more realistic way by considering the overlapping effect between routes.This paper investigates the inefficiency upper bounds of this model against the deterministic system optimum and the C-logit stochastic system optimum in terms of the total network travel time.It is found that the commonality factor of overlapping routes significantly affects the inefficiency bound,besides link congestion degree,total demand and the number of feasible routes.If the commonality factor is not considered,the efficiency loss resulting from selfishly stochastic travel behavior will be to large extent underestimated. | YONG Gui HUANG Haijun LIU Tianliang XU Yan | 2016 | Journal of Systems Science & Complexity2016，29，6： | 3 |
| 19 | Modeling the effects of plastic film mulching on irrigated maize yield and water use efficiency in sub-humid Northeast China显示文摘In sub-humid Northeast China,plastic film mulching(PFM)is increasingly used with drip irrigation system in maize(Zea mays L.)to cope with seasonal droughts and low temperatures during seedling stage.Although there were several studies showing the benefits of PFM on maize production in the region,quantification of the effects of PFM in sub-humid Northeast China are still lacking.Hybrid-Maize model has a special version that can not only simulate the effects of PFM on reduction of soil evaporation and rise of topsoil temperature,but also simulate the effects of PFM on crop development and other physiological processes.This paper reports how to verify the Hybrid-Maize model against observations and then applying the model to quantify effects of PFM on grain yield and water use efficiency(WUE)under irrigated scenarios.The Hybrid-Maize model was added the heating effects of PFM on rising surface-soil temperature and promoting subsequent crop development by establishing equations between surface-soil temperature and air temperature before V6 stage.A 3-year field experiment including maize growth and yield data measured at a drip-irrigated field in Heilongjiang Province was used to serve the model calibration.The simulated results indicated that the Hybrid-Maize model performed well in simulation of seasonal soil water storage and in-season aboveground dry matter in three years,but overestimated the leaf area index(LAI)for both treatments and underestimated the final aboveground dry matter at maturity for mulched treatments.Although the Hybrid-Maize model overestimated the grain yield and WUE,it did still reflect the effects of PFM on increasing grain yield and WUE during the three growing seasons.The average simulated grain yield and WUE for mulched treatments were 8%and 13%greater compared to non-mulched treatments using 30 years weather data,which were in agreement with observations that average grain yield and WUE was 11%and 14%increased by PFM,respectively.For evapotranspiration(ET),the average simulated ET for mulched treatments was 22 mm less than non-mulched treatments mainly due to less soil evaporation.For simulated irrigation requirements,at most 69 mm of irrigation water could be saved by PFM.In conclusion,PFM with drip irrigation could improve irrigated maize production in sub-humid Northeast China. | Liu Yang Yang Haishun Li Yanfeng Yan Haijun Li Jiusheng | 2017 | International Journal of Agricultural and Biological Engineering2017，10，5： | 2 |
| 20 | The interaction between grain boundary and tool geometry in nanocutting of a bi-crystal copper显示文摘Anisotropy is one central influencing factor on achievable ultimate machined surface integrity of metallic materials.Specifically,grain boundary has a strong impact on the deformation behaviour of polycrystalline materials and correlated material removal at the microscale.In the present work,we perform molecular dynamics simulations and experiments to elucidate the underlying grain boundaryassociated mechanisms and their correlations with machining results of a bi-crystal Cu under nanocutting using a Berkovich tool.Specifically,crystallographic orientations of simulated bi-crystal Cu with a misorientation angle of 44.1°are derived from electron backscatter diffraction characterization of utilized polycrystalline copper specimen.Simulation results reveal that blocking of dislocation motion at grain boundaries,absorption of dislocations by grain boundaries and dislocation nucleation from grain boundaries are operating deformation modes in nanocutting of the bi-crystal Cu.Furthermore,heterogeneous grain boundary-associated mechanisms in neighbouring grains lead to strong anisotropic machining behaviour in the vicinity of the grain boundary.Simulated machined surface morphology and machining force evolution in the vicinity of grain boundary qualitatively agree well with experimental results.It is also found that the geometry of Berkovich tool has a strong impact on grain boundary-associated mechanisms and resultant ploughing-induced surface pile-up phenomenon. | Zhanfeng Wang Tao Sun Haijun Zhang Guo Li Zengqiang Li Junjie Zhang Yongda Yan Alexander Hartmaier | 2019 | International Journal of Extreme Manufacturing2019，1，4： | 2 |
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