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| 1 | Smart Behavior of Carbon Fiber Reinforced Cement-based Composite显示文摘The electrical characteristics of cement-based material can be remarkably improved by the addition of short carbon fibers.Carbon fiber reinforced cement composite (CFRC) is an intrinsically smart material that can sense not only the stress andstrain, but also the temperature. In this paper, variations of electrical resistivity with external applied load, and relationof thermoelectric force and temperature were investigated. Test results indicated that the electrical signal is related to theincrease in the material volume resistivity during crack generation or propagation and the decrease in the resistivity duringcrack closure. Moreover, it was found that the fiber addition increased the linearity and reversibility of the Seebeck effect inthe cement-based materials. The change of electrical characteristics reflects large amount of information of inner damage andtemperature differential of composite, which can be used for stress-strain or thermal self-monitoring by embedding it in theconcrete structures. | Wu YAO, Bing CHEN Keru WUState Key Laboratory of Concrete Materials Research, Tongji University, Shanghai 200092, China | 2003 | Journal of Materials Science & Technology2003，19，3： | 13 |
| 2 | Using irrigation intervals to optimize water-use efficiency and maize yield in Xinjiang,northwest China显示文摘Worldwide, scarce water resources and substantial food demands require efficient water use and high yield.This study investigated whether irrigation frequency can be used to adjust soil moisture to increase grain yield and water use efficiency(WUE) of high-yield maize under conditions of mulching and drip irrigation.A field experiment was conducted using three irrigation intervals in 2016: 6, 9, and 12 days(labeled D6, D9, and D12) and five irrigation intervals in 2017: 3, 6, 9, 12, and 15 days(D3, D6, D9, D12, and D15).In Xinjiang, an optimal irrigation quota is 540 mm for high-yield maize.The D3, D6, D9, D12, and D15 irrigation intervals gave grain yields of 19.7, 19.1–21.0, 18.8–20.0, 18.2–19.2, and 17.2 Mg ha^-1 and a WUE of 2.48, 2.53–2.80, 2.47–2.63, 2.34–2.45, and 2.08 kg m-3, respectively.Treatment D6 led to the highest soil water storage, but evapotranspiration and soil-water evaporation were lower than other treatments.These results show that irrigation interval D6 can help maintain a favorable soil-moisture environment in the upper-60-cm soil layer, reduce soilwater evaporation and evapotranspiration, and produce the highest yield and WUE.In this arid region and in other regions with similar soil and climate conditions, a similar irrigation interval would thus be beneficial for adjusting soil moisture to increase maize yield and WUE under conditions of mulching and drip irrigation. | Guoqiang Zhang Dongping Shen Bo Ming Ruizhi Xie Xiuliang Jin Chaowei Liu Peng Hou Jun Xue Jianglu Chen Wanxu Zhang Wanmao Liu Keru Wang Shaokun Li | 2019 | The Crop Journal2019，7，3： | 4 |
| 3 | Self-attention transfer networks for speech emotion recognition显示文摘Background A crucial element of human-machine interaction,the automatic detection of emotional states from human speech has long been regarded as a challenging task for machine learning models.One vital challenge in speech emotion recognition(SER)is learning robust and discriminative representations from speech.Although machine learning methods have been widely applied in SER research,the inadequate amount of available annotated data has become a bottleneck impeding the extended application of such techniques(e.g.,deep neural networks).To address this issue,we present a deep learning method that combines knowledge transfer and self-attention for SER tasks.Herein,we apply the log-Mel spectrogram with deltas and delta-deltas as inputs.Moreover,given that emotions are time dependent,we apply temporal convolutional neural networks to model the variations in emotions.We further introduce an attention transfer mechanism,which is based on a self-attention algorithm to learn long-term dependencies.The self-attention transfer network(SATN)in our proposed approach takes advantage of attention transfer to learn attention from speech recognition,followed by transferring this knowledge into SER.An evaluation built on Interactive Emotional Dyadic Motion Capture(IEMOCAP)dataset demonstrates the effectiveness of the proposed model. | Ziping ZHAO Keru Wang Zhongtian BAO Zixing ZHANG Nicholas CUMMINS Shihuang SUN Haishuai WANG Jianhua TAO Björn WSCHULLER | 2021 | Virtual Reality & Intelligent Hardware2021，3，1： | 3 |
| 4 | Review of combine harvester losses for maize and influencing factors显示文摘The high harvest losses associated with the mechanical harvesting of maize in China are currently a major barrier to the adoption of this technology.This paper summarizes works of literature regarding harvest losses from the combine harvesting of maize in China and abroad.The main findings are as follows:(1)In 2012-2019,2987 samples data obtained from the major maize production areas of China showed that the average harvest loss was 345.2 kg/hm2(3.5%of the average yield),with losses ranging from 0 to 9288.5 kg/hm2;(2)The harvest losses from combine harvesting are mainly caused by the dropping of ears.The ear losses include the pre-harvest loss caused by ear abscission,damage caused by maize borer,lodging,and the ear loss during combine harvesting,and the main pre-harvest loss is caused by lodging;(3)Harvest losses are affected by maize variety,planting mode,cultivation management,pests and diseases,weather conditions during harvesting,harvest date,combine harvester type,harvester adjustment,operator proficiency,and the terrain conditions of the maize field;(4)The harvest losses from combine harvesting are also related to the type of header,feeding and threshing methods,the adjustment of header stripping clearance,feeding amount,forward speed,cylinder or rotor speed,and the clearance between the cylinder and the concave of the harvester.However,the combine losses mainly come from header losses.In order to reduce the harvest losses,the following solutions were proposed:(1)Breed and select maize varieties which are resistant to lodging,especially during the field drying of mature grains,as well as those resistant to maize borer and stalk rot;(2)Select varieties suitable for grain harvest-which requires matching the accumulated-temperature demand of the maize hybrids,optimal plant density,row spacing,and irrigation and fertilizer management with the light and heat conditions of the production area while cultivating uniform populations and healthy plants-as well as preventing and controlling damage from maize borer,stalk rot,and ear rot,harvesting at the appropriate time;(3)Develop and select advanced maize combine harvesters,formulate standardized operating procedures for harvesting machinery,and standardize field operation;(4)select appropriate agricultural machinery and agronomic practices,and improve the training of maize producers and harvester operators. | Keru Wang Ruizhi Xie Bo Ming Peng Hou Jun Xue Shaokun Li | 2021 | International Journal of Agricultural and Biological Engineering2021，14，1： | 3 |
| 5 | Kernel position effects of grain morphological characteristics by X-ray micro-computed tomography (μCT)显示文摘Grain size and shape are important factors for yield and quality.The difference in grain phenotypic characteristics in the same maize hybrid is related to its position in the ear.This study aimed to clarify the distribution characteristics of grain morphological characteristics in the ear and to provide guidance for research of grain phenotype and kernel position effects.Three maize hybrids were used in the experiment,namely,Denghai 618(DH618),KX3564,and Xianyu 335(XY335),and the kernel number per row were 40,40,and 36,respectively.The X-rayμCT was applied to obtain five kernel morphological indicators,including grain length,width,thickness,volume,surface area.Grain sphericity,length-width ratio,specific surface area,and volume coefficient were further calculated.The results showed that there were three types of maize ear morphological indicators trends:grain length,width,volume,and surface area were parabolic;thickness and sphericity were inverted parabolic;length-to-width ratio and specific surface area were irregular.The volume coefficient of grain at different parts of the ear,namely the relation coefficient between grain volume and grain length,width,and thickness,was determined.The average value of the middle grains morphological indicators of the ear was taken to select kernels representing stable characteristics of the variety.Within the range of 5%deviation from the morphological mean value of the middle grains of the ear,the grains in the middle part accounted for 26.39%of the total ear,about 10 grains extending from the 14th grain at the base of the ear to the top.Within the range of 10%deviation,the middle accounted for 47.22%,about 18 grains extending from the 12th grain at the base of the ear to the top.This study found that grain morphological indicators were greatly different at different positions of the maize ear,and showed different change rules as extend from the base to the top of the ear.Therefore,there were different grain volume coefficients at different positions of maize ear.And the representative sampling range on maize ear was determined based on the comprehensive analysis of different morphological indexes variation of grain. | Xuebo Yin Junfeng Hou Bo Ming Ying Zhang Xinyu Guo Shang Gao Keru Wang Peng Hou Shaokun Li Ruizhi Xie | 2021 | International Journal of Agricultural and Biological Engineering2021，14，2： | 2 |
| 6 | Dasatinib inhibits proliferation of liver cancer cells,but activation of Akt/mTOR compromises dasatinib as a cancer drug显示文摘Dasatinib is a multi-target protein tyrosine kinase inhibitor.Due to its potent inhibition of Src,Abl,the platelet-derived growth factor receptor(PDGFR)family kinases,and other oncogenic kinases,it has been investigated as a targeted therapy for a broad spectrum of cancer types.However,its efficacy has not been significantly extended beyond leukemia.The mechanism of resistance to dasatinib in a wide array of cancers is not clear.In the present study,we investigated the effect of dasatinib on hepatocellular carcinoma cell growth and explored the underlying mechanisms.Our results showed that dasatinib potently inhibited the proliferation of SNU-449 cells,but not that of other cell lines,such as SK-Hep-1,even though it inhibited the phosphorylation of Src on both negative and positive regulation sites in all these cells.Dasatinib activated the phosphoinositide-dependent protein kinase1(PDK1)/protein kinase B(Akt)/mammalian target of rapamycin(mTOR)signaling pathway in SK-Hep-1 cells,but not in SNU-449 cells.Blocking the Akt/mTOR signaling pathway strongly promoted the efficacy of dasatinib in SK-Hep-1 cells.In SNU-449 cells,dasatinib promoted apoptosis and the cleavage of caspase-3 and caspase-7,induced cell cycle arrest in the G1 phase,and inhibited the expression of Cyclin-dependent kinase(CDK4)/6/CyclinD1 complex.These findings demonstrate that dasatinib exerts its anti-proliferative effect on hepatocellular cell proliferation by blocking the Src family kinases;however,it causes Akt activation,which compromises dasatinib as an anti-cancer drug. | Chang Liu Xiaoxia Zhu Yuqi Jia Fenqing Chi Keru Qin Jinhong Pei Chan Zhang Xiuli Mu Hongwei Zhang Xiushan Dong Jun Xu Baofeng Yu | 2021 | Acta Biochimica et Biophysica Sinica2021，53，7： | 2 |
| 7 | Study of the influence of aggregate size distribution on mechanical properties of concrete by acoustic emission technique 显示文摘 | Keru Wu Bing Chen Wu Yao | 2001 | Cement and Concrete Research2001，31，6： | 1 |
| 8 | Mechanical properties of hybrid fiber-reinforced concrete at low fiber volume fraction 显示文摘 | Wu Yao Jie U and Keru Wu | 2003 | Cement and Concrete Research2003，33，1： | 1 |
| 9 | 显示文摘 | Yao W Chen B Wu Keru | 2003 | Journal of Materials Science and Technology2003，19，3： | 1 |
| 10 | Conductivity of carbon fiber reinforced cement-based composites显示文摘 | Chen Bing Wu Keru Yao Wu | 2004 | Cem Concr Compos2004，26，： | 1 |
| 11 | Sensory neurons and fi-bers from multiple spinal cord levels innervate the rabbit lumbar disc显示文摘 | Zhang Y Kerus JM Anderson DG | 2006 | Am J Phys Med Rehabil2006，85，11： | 1 |
| 12 | Conductivity of carbon fiber reinforced cement-based composites显示文摘 | Chen Bing Wu Keru Yao Wu | 2004 | Cement Concr Compos2004，26，： | 1 |
| 13 | A quantitative study on the surface crackpattem of concrete with high content of steel fiber 显示文摘 | An Yan Keru Wu Xiong Zhang | 2002 | Cement and Concrete Research2002，，32： | 1 |
| 14 | Conductivity of glass fiber reinforced cement-based composites显示文摘 | BingChen Keru Wu WuYao | 2004 | Cement & Concrete Composites2004，，26： | 1 |
| 15 | Mechanical properties of hybrid fiber-rein-forced concrete at low fiber volume fraction显示文摘 | Wu Yao Jie Li Keru Wu | 2003 | Cement and concrete research2003，33，1： | 1 |
| 16 | Investigation of a nanosuspension stabilized by Soluplus ? to improve bioavailability显示文摘 | Hua Yang Fei Teng Puxiu Wang Bin Tian Xia Lin Xi Hu Ling Zhang Keru Zhang Yu Zhang Xing Tang | 2014 | International Journal of Pharmaceutics . 2014 (1-2)2014，，1： | 1 |
| 17 | Mechanical properties of hybrid fiber- reinforced concrete at low fiber volume fraction 显示文摘 | YAO WU LI JIE WU KERU | 2002 | Cement and Concrete Research2002，33，1： | 1 |
| 18 | In-field harvest loss of mechanically-harvested maize grain and affecting factors in China显示文摘Field harvest loss is a common problem of maize grain mechanical harvesting in China and abroad.From 2012 to 2019,2987 groups of samples for the quality of mechanical grain harvesting in field were obtained in 21 major maize-producing provinces,cities,and regions of China.The analysis performed in this study showed that the average harvest loss of fallen ears was equivalent to 76.5%of the total harvest loss,indicating that the harvest loss in the mechanical harvesting of maize grain mainly came from the loss of fallen ears.Meanwhile,statistical analysis of the harvest loss in different ranges of grain moisture contents showed that,when the grain moisture content fell below 20%,the harvest loss rate of fallen ears and the total harvest loss rate both increased sharply,and the harvest loss of fallen ears increased faster than the harvest loss of fallen grain with a decreasing grain moisture content.Moreover,the results of multi-point experiments and harvest experiments in different periods showed that,during harvesting time,the harvest loss of fallen ears caused by lodging was the main reason for in-field harvest losses in the mechanical harvesting of maize grain.Apart from the above mentioned,the test results of 35 groups of harvesters for the in-field mechanical harvesting of maize grain showed that the harvester types and their operating parameters were important factors affecting the harvest loss in the mechanical harvesting of maize grain.Therefore,the principal paths to reduce harvest loss in the mechanical harvesting of maize grain are to breed lodging-resistant maize varieties,adopt reasonable planting densities,cultivate healthy plants,develop harvesters with low harvesting loss,intensify the training of operators,and harvest at an appropriate time. | Liangyu Hou Keru Wang Yizhou Wang Lulu Li Bo Ming Ruizhi Xie Shaokun Li | 2021 | International Journal of Agricultural and Biological Engineering2021，14，1： | 1 |
| 19 | Development of thermal energy storage concrete 显示文摘 | Zhang Dong Li Zongjin Zhou Jianmin Wu Keru | 2004 | Cement and Concrete Research2004，34，6： | 1 |
| 20 | A quantitative study on the surface crack pattern of concrete with high content of steel fiber显示文摘 | An Yah Keru Wu Xiong Zhang | 2002 | Cement and Concrete Research2002，，32： | 1 |
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