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    题名 作者 年代 出处 被引量
1Wall Sticking of High Water-Cut, Highly Viscous and High Gel-Point Crude Oil Transported at Low Temperatures显示文摘Some crude oils with high water cut have the capability to flow below the oil gel point, while the oil particles adhere to the pipe wall in the form of paste, also called 'wall sticking'. Wall sticking is a serious problem during the pipeline transportation, leading to partial or total blockage of the pipeline and energy wastage. In this paper, a series of laboratory flow loop experiments were conducted to observe the wall sticking characteristics of crude oil with high water cut, high viscosity and high gel point at low transportation temperatures. The effects of shear stress and water cut on the wall sticking rate and occurrence temperature were investigated. Experimental results indicated that the wall sticking rate and occurrence temperature were lower under stronger shear stress and higher water cut conditions. A criterion of wall sticking occurrence temperature(WSOT) and a regression model of wall sticking rate were then established. Finally, the software was developed to calculate the pressure drop along the pipelines of crude oils with high water-cut. It was able to predict the wall sticking thickness of gelled oil and then calculate the pressure drop along the pipelines. A typical case study indicated that the prediction results obtained from the software were in agreement with actual measured values.Zheng Haimin Huang Qiyu Wang Changhui Wang Xi 2015China Petroleum Processing & Petrochemical Technology2015,17,4:17
2A conodont-based Middle Triassic age assignment for the Luoping Biota of Yunnan, China显示文摘The Luoping Biota consists of abundant and well-preserved marine fishes, reptiles, invertebrates, and plants. It occurs in the Middle Triassic Guanling Formation in Daaozi Village of Luoping County, Yun-nan Province, China. Based on conodonts, the Luoping Biota is determined to lie within the Nicoraella kockeli Zone, which is assigned to the Pelsonian substage of the Anisian.ZHANG QiYue ZHOU ChangYong LU Tao XIE Tao LOU XiongYing LIU Wei SUN YuanYuan HUANG JinYuan ZHAO LaiShi 2009Science China Earth Sciences2009,52,10:15
3Monocular depth estimation based on deep learning: An overview显示文摘Depth information is important for autonomous systems to perceive environments and estimate their own state. Traditional depth estimation methods, like structure from motion and stereo vision matching, are built on feature correspondences of multiple viewpoints. Meanwhile, the predicted depth maps are sparse. Inferring depth information from a single image(monocular depth estimation) is an ill-posed problem. With the rapid development of deep neural networks, monocular depth estimation based on deep learning has been widely studied recently and achieved promising performance in accuracy. Meanwhile, dense depth maps are estimated from single images by deep neural networks in an end-to-end manner. In order to improve the accuracy of depth estimation, different kinds of network frameworks, loss functions and training strategies are proposed subsequently. Therefore, we survey the current monocular depth estimation methods based on deep learning in this review. Initially, we conclude several widely used datasets and evaluation indicators in deep learning-based depth estimation. Furthermore, we review some representative existing methods according to different training manners: supervised, unsupervised and semi-supervised. Finally, we discuss the challenges and provide some ideas for future researches in monocular depth estimation.ZHAO ChaoQiang SUN QiYu ZHANG ChongZhen TANG Yang QIAN Feng 2020Science China(Technological Sciences)2020,63,9:15
4Effects of mulberry leaf flavonoid and resveratrol on methane emission and nutrient digestion in sheep显示文摘As a new type of methane control agent, natural plant extract has been widely studied in recent years,but in vivo studies are few. This study was to investigate the effects of the dietary supplementation of 2 different polyphenols on the methane(CH4) emission and digestion metabolism in sheep. Ten healthy crossbred sheep(Dorper(?)× small-tailed Han ♀; BW 60.0 ± 1.73 kg) were used in a change-over design.The sheep were fed the following 3 diets in the present study: the basal diet(CON) with no supplementation; the basal diet supplemented with 2 g mulberry leaf flavonoid(MLF) per day per sheep; the basal diet supplemented with 0.25 g resveratrol(RES) per day per sheep. Both MLF and RES reduced CH4 emission scaled to metabolic weight per kilogram of DMI and CO2 output scaled to metabolic weight, but the effect of RES was significant(P < 0.05). Both MLF and RES significantly improved apparent digestibility of DM, OM, NDF, ADF, and nitrogen, but the effect of RES was significant(P < 0.05). Both MLF and RES significantly improved ME(P < 0.05) and reduced energy losses in CH4 emission(P > 0.05). In conclusion, MLF and RES can improve the digestibility of nutrients, the utilization of nutrients and energy, and reduce CH4 emission, but they are not conducive to nitrogen retention.Dandan Chen Xiaolin Chen Yan Tu Bo Wang Can Lou Tao Ma Qiyu Diao 2015Animal Nutrition2015,,4:14
5Down-regulation of Sonic hedgehog signaling pathway activity is involved in 5-fluorouracil-induced apoptosis and motility inhibition in Hep3B cells显示文摘声音的刺猬(嘘) 小径在正常胚胎开始和 carcinogenesis 起一个关键作用,但是它在与 5 氟尿嘧啶(5-FU ) 对待的癌症房间的功能仍然保持未知。我们检验了表明小径基因的嘘的一个子集的表示,包括嘘, SMO, PTC1,苏(Fu ) 和在人的 hepatocellular 癌(HCC ) 的臀部房间线, Hep3BandHepG2,由反向的抄写聚合酶链反应与 5-FU 对待。用尝试平底锅蓝色分析, 3-(4,5-dimethylthiazol-2-yl )-2,5-diphenyltetrazoliumbromide 试金和终端 deoxynucleotidyl 调停 transferase 的 digoxigenin-dUTP 刻痕结束标记试金,我们也检测了源于表示向量与 5-FU 治疗相结合的 pCS2-Glil 的 transfection 的 Hep3B 房间的 apoptosis。房间的活动性被擦伤创伤闭合试金检测。在 5-FU 对待的 Hep3B 房间的 PTC1 蛋白质的细胞的地点也是的表示和潜水艇由西方的污点分析和免疫调查了荧光灯的显微镜学。结果显示在送信人 RNA 和蛋白质层次的嘘小径目标分子的表示在与 5-FU 对待的 Hep3B 房间是显然下面调整的。过去图形用户界面的表示恢复房间生存能力并且到某程度,移植能力由 5-FU 禁止了。而且, 5-FU 处理影响潜水艇 PTC1 蛋白质的细胞的本地化,在嘘发信号的一个关键成员小径。我们的数据证明表明小径活动的嘘的下面规定在激活刺猬的 HCC 房间线涉及 5-FU-induced apoptosis 和活动性的抑制。这暗示表明小径禁止者和 5-FU-based 化疗的嘘的联合可能对 HCC 代表更有希望的策略。Qiyu Wang Shuhong Huang Ling Yang Ling Zhao Yuxia Yin Zhongzhen Liu Zheyu Chen Hongwei Zhang 2008Acta Biochimica et Biophysica Sinica2008,40,9:10
6Effects of weaning age on growth, nutrient digestibility and metabolism,and serum parameters in Hu lambs显示文摘This study was conducted to investigate the effect of weaning age on growth performance, nutrient digestion and metabolism, and serological indicators, and to obtain an optimal weaning age in Hu lambs.Forty-eight newborn Hu lambs(birth weight, 2.53 ± 0.14 kg) were randomly divided into 4 groups. The lambs in control group(ER) suckled their dams. The lambs in other three experimental groups were weaned on milk replacer at 10.20, and 30 days of age(EW10, EW20, and EW30 groups),respectively. The results were as follows: 1) lambs in EW10 and EW30 groups had a lower(P < 0.05) ADG than those in ER group within 10 days post-weaning; the weaned lambs began to show a higher(P < 0.05) ADG than those in ER group after 20 days post-weaning. 2) EW10 and EW20 groups had a higher(P < 0.05) creep feed intake than EW30 and ER groups from 15 to 60 days of age. 3) The apparent digestibility of dry matter, organic matter, gross energy, nitrogen, ether extract and phosphorus, and the deposition of nitrogen and phosphorus did not differ(P > 0.05) among groups; however, the apparent digestibility and deposition of calcium in early weaned lambs were lower(P < 0.05) than those in ewe-reared lambs. 4)The albumin content in EW30 group was lower(P < 0.05) than that in ER group; the globulin content in EW30 group was higher(P < 0.05) than that in other groups; the content of serum insulin-like growth factor-1 in weaned lambs tended to increase compared with lambs in ER group. Finally, the growth rate of lambs decreased within 10 days post-weaning, but early weaning boosted creep feed intake, leading to better growth and health later in life. The Hu lambs can be weaned on milk replacer and creep feed at 10 days of age.Jianmin Chai Qiyu Diao Haichao Wang Yan Tu Xiaojing Tao Naifeng Zhang 2015Animal Nutrition2015,,4:10
7Recent progress and challenges of carbon materials for Zn-ion hybrid supercapacitors显示文摘Zinc-ion hybrid supercapacitors(ZHSCs)have garnered increasing attention as promising energy storage devices in recent years,as they combine the advantages of high-energy Zn-ion batteries and high-power supercapacitors.However,the development of ZHSCs is still in its infancy and there are many bottlenecks to overcome.In particular,the challenge induced by the limited ion adsorption capability of carbon-positive electrodes severely restricts the energy density of ZHSCs.Therefore,it has become a key issue to design novel carbon-positive electrodes that enable high energy density yet do not deteriorate the intrinsic power capability and long-term durability.This study focuses on recent achievements in synthesis,morphology,and electrochemical performance of various carbon materials applied in ZHSCs.The modification strategies to optimize their electrochemical performance are briefly summarized.In addition,current challenges and future opportunities in this field are also outlined.This review will be beneficial to provide an organized framework for the research systems of carbon-positive electrodes and develop novel ZHSCs with high energy density.Qiyu Liu Haozhe Zhang Jinhao Xie Xiaoqing Liu Xihong Lu 2020Carbon Energy2020,2,4:10
8Advances in rheology and flow assurance studies of waxy crude显示文摘Flow assurance is one of the core issues in safe and economical operation of waxy crude pipelines.Its essence lies in flow and heat transfer of the crude.In the past 10 years,the authors' team has achieved a lot of innovative results in aspects of waxy crude rheology,flow assurance assessment,and pipelining technologies on the basis of decades of studies.The rheological characteristics of waxy crude are much better understood,and a method for quantitatively simulating the effect of flow shear was developed based on some theoretical breakthroughs.Studies of the mechanism of waxy crude rheology have been deepened to the quantitative level.After successful development of efficient numericalalgorithms,accurate simulations have been achieved for various complex flow and heat transfer situations in waxy crude pipelining,and a reliability-based approach to flow assurance assessment has been set up.New pipelining technologies have been developed such as batching pour-point depressant-(PPD-) treated multiple-waxy-crudes,intermittent transport of waxy crudes through long-distance pipelines,and batching hot and cold crudes.By their application,a series of problems hindering safe,efficient and flexible operation of waxy crude pipelines were tackled,demonstrating that transportation technologies for waxy crude have advanced to a new and high level.Zhang Jinjun Yu Bo Li Hongying Huang Qiyu 2013Petroleum Science2013,10,4:10
9Effect of supplementation of allicin on methanogenesis and ruminal microbial flora in Dorper crossbred ewes显示文摘Background: Garlic extracts have been reported to be effective in reducing methanogenesis. Related mechanisms are not well illustrated, however, and most studies have been conducted in vitro. This study investigates the effects of supplementary allicin(AL) in sheep diet on in vivo digestibility, rumen fermentation, and shifts of microbial flora.Methods: Two experiments were conducted using Dorper × thin-tailed Han crossbred ewes. In experiment 1,eighteen ewes(60.0 ± 1.73 kg BW) were randomly assigned for 29 days to either of two dietary treatments: a basal diet or the basal diet supplemented with 2.0 g AL/head?day to investigate supplementary AL on nutrient digestibility and methane emissions. In experiment 2, six ewes(65.2 ± 2.0 kg BW) with ruminal canulas were assigned to the same two dietary treatments as in experiment 1 for 42 days to investigate supplementary AL on ruminal fermentation and microbial flora. The methane emissions were determined using an open-circuit respirometry system and microbial assessment was done by q PCR of 16 S r RNA genes.Results: Supplementary AL increased the apparent digestibility of organic matter(P < 0.001), nitrogen(P = 0.006),neutral detergent fiber(P < 0.001), and acid detergent fiber(P = 0.002). Fecal nitrogen output was reduced(P = 0.001)but urinary nitrogen output was unaffected(P = 0.691), while nitrogen retention(P = 0.077) and nitrogen retention/nitrogen intake(P = 0.077) tended to increase. Supplementary AL decreased methane emissions scaled to metabolic bodyweight by 5.95 %(P = 0.007) and to digestible organic matter intake by 8.36 %(P = 0.009). Ruminal p H was unaffected(P = 0.601) while ammonia decreased(P = 0.024) and total volatile fatty acids increased(P = 0.024) in response to supplementary AL. Supplementary AL decreased the population of methanogens(P = 0.001) and tended to decrease that of protozoans(P = 0.097), but increased the populations of F. succinogenes(P < 0.001), R. flavefaciens(P = 0.001), and B. fibrisolvens(P = 0.001).Conclusions: Supplementation of AL at 2.0 g/head?day effectively enhanced OM, N, NDF, and ADF digestibility and reduced daily methane emissions(L/kg BW0.75) in ewes, probably by decreasing the population of ruminal protozoans and methanogens.Tao Ma Dandan Chen Yan Tu Naifeng Zhang Bingwen Si Kaidong Deng Qiyu Diao 2016Journal of Animal Science and Biotechnology2016,7,2:9
10Stable Isotopes in Precipitation in Xilin River Basin,Northern China and Their Implications显示文摘Under the increasing pressure of water shortage and steppe degradation,information on the hydrological cycle in steppe region in Inner Mongolia,China is urgently needed.An intensive investigation of the temporal variations ofδD andδ1 8O in precipitation was conducted in 2007-2008 in the Xilin River Basin,Inner Mongolia in the northern China.TheδD andδ1 8O values for 54 precipitation samples range from+1.1‰to-34.7‰and-3.0‰to -269‰,respectively.This wide range indicates that stable isotopes in precipitation are primarily controlled by different condensation mechanisms as a function of air temperature and varying sources of vapor.The relationship between δD andδ1 8 O defined a well constrained line given by δD =7.89 δ18O+9.5,which is nearly identical to the Meteoric Water Line in the northern China.The temperature effect is clearly displayed in this area.The results of backward tra- jectory of each precipitation day show that the vapor of the precipitation in cold season(October to March)mainly originates from the west while the moisture source is more complicated in warm season(April to September).A light precipitation amount effect existes at the precipitation event scale in this area.The vapor source of precipitation with higher d-excesses are mainly from the west wind or neighboring inland area and precipitation with lower d-excesses from a monsoon source from the southeastern China.WU Jinkui DING Yongjian YE Baisheng YANG Qiyue HOU Dianjiong XUE Liyang 2012Chinese Geographical Science2012,22,5:9
11treatment of swine wastewater in aerobic granular reactors: comparison of different seed granules as factors显示文摘使成粒状过程,药品化学药品性质,污染移动能力和有不同喂废水的氧气的小粒的细菌的社区(合成废水, R1;猪废水, R2 ) ,并且在对待猪废水的长期的操作反应堆的小粒的二种类型的一些参数的变化趋势在这个实验被调查。结果显示有合成废水的氧气的使成粒状在 R1 与猪废水和那完整的使成粒状相比有更快的率, R2 分别地在第 30 天和第 39 白天被到达。然而,尽管 feed 废水也在使成粒状过程期间在生物资源部分和氧气的小粒的细胞外的聚合物质上有明显的效果,这些性质在长期的操作以后在类似的水平留下了。而且,一个类似的增加趋势能也在反应堆,和 organics 的平均特定的移动率以氧气的小粒的氮移动效率被观察,在不变的阶段的氨氮为 R1 是 35.33 mgg 1 VSS 和 51.46 mgg 1 VSS ,并且为 R2 的 35.47 mgg 1 VSS 和 51.72 mgg 1 VSS 分别地。另外,在细菌的差异的移动发生在使成粒状过程,而在氧气的小粒的反应堆的细菌的社区没被种子小粒在长期的操作以后影响。Lin LIU Qiyu YOU Valerie GIBSON Xu HUANG Shaohua CHEN Zhilong YE Chaoxiang LIU 2015Frontiers of Environmental Science & Engineering2015,9,6:9
12High-Q resonances governed by the quasi-bound states in the continuum in all-dielectric metasurfaces显示文摘The realization of high-Q resonances in a silicon metasurface with various broken-symmetry blocks is reported. Theoretical analysis reveals that the sharp resonances in the metasurfaces originate from symmetry-protected bound in the continuum(BIC) and the magnetic dipole dominates these peculiar states. A smaller size of the defect in the broken-symmetry block gives rise to the resonance with a larger Q factor. Importantly, this relationship can be tuned by changing the structural parameter, resulting from the modulation of the topological configuration of BICs. Consequently, a Q factor of more than 3,000 can be easily achieved by optimizing dimensions of the nanostructure. At this sharp resonance, the intensity of the third harmonic generation signal in the patterned structure can be 368 times larger than that of the flat silicon film. The proposed strategy and underlying theory can open up new avenues to realize ultrasharp resonances, which may promote the development of the potential meta-devices for nonlinearity, lasing action, and sensing.Cizhe Fang Qiyu Yang Qingchen Yuan Xuetao Gan Jianlin Zhao Yao Shao Yan Liu Genquan Han Yue Hao 2021Opto-Electronic Advances2021,4,6:8
13Preparation of high-purity monodisperse silica microspheres by the sol-gel method coupled with polymerization-induced colloid aggregation显示文摘Ultra-pure mesoporous silica microspheres with good monodispersity were synthesized in two steps:nanometer-sized silica sol was produced by the sol-gel process,then micrometer-sized silica microspheres were synthesized by polymerization-induced colloid aggregation of the silica sol.The total metal content of the microspheres was extremely low,which eliminated the tailing of chromatographic peaks by chelating reagents.The pore structure of the silica microspheres could be controlled by altering the sol-gel conditions.The silica microsphere particle size could be adjusted by using different polymerizationinduced colloid aggregation conditions.Beibei Zhao Yan Zhang Tao Tang Fengyun Wang Tong Li Qiyu Lu 2015Particuology2015,13,5:7
14Experimental Study on Wear and Spalling Behaviors of Railway Wheel显示文摘The current researches of the wear and spalling behaviors of wheel/rail materials focus on the field investigation rather than the mechanism.However,it is necessary and significant for clarifying the mechanism and relationship between the wear and spalling damage of railway wheel to test and reproduce the wheel damages in laboratory.The objective of this paper is to investigate the wear and spalling damage behaviors of railway wheel using a JD-1 wheel/rail simulation facility,which consists of a small wheel serving as rolling stock wheel,and a larger wheel serving as rail.The damage process of wheel roller is explored in terms of the creep ratio,axle load,and carbon content by means of various microscopic examinations.The experimental results show that the wear volume growth of wheel roller is proved to be proportional to the increase of the creep ratio and normal load between simulating wheel and rail.The increase of carbon content of wheel material causes a linear reduction in the wear volume.The microscopic examinations indicate that the rolling wear mechanism transfers from abrasive wear to adhesive and fatigue wear with an increase of tangential friction force,which results in the initiation of fatigue crack,and then aggravates spalling damage on the wheel roller surface.The surface hardness of material depends strongly upon its carbon content.The decrease of the carbon content of wheel material may alleviate spalling damage,but can cause a significant growth in the wear volume of wheel roller.Therefore,there is a competitive relationship between the wear and spalling damage of wheel material.This research proposes an important measure for alleviating or preventing the wear and spalling damage of railway wheel material.WANG Wenjian GUO Jun LIU Qiyue 2013Chinese Journal of Mechanical Engineering2013,26,6:7
15Aneuploidy of chromosome 8 in circulating tumor cells correlates with prognosis in patients with advanced gastric cancer显示文摘Objective: Previous work indicated that aneuploidy of chromosome 8 in circulating tumor cells(CTCs)correlated with therapeutic efficacy for advanced gastric cancer(AGC) patients. In this follow-up study performed on the same population of AGC patients, we investigated whether and how aneuploidy of chromosome 8 in CTCs correlates with patients' clinical prognosis.Methods: The prospective study was performed on 31 patients with newly diagnosed AGC. Previously established integrated subtraction enrichment(SE) and immunostaining-fluorescence in situ hybridization(i FISH)platform was applied to identify, enumerate and characterize CTCs. Quantification of CTCs and analysis of their aneuploidy of chromosome 8 were performed on patients before and after therapy.Results: CTCs were measured in 93.5% of AGC patients, and two CTC subtypes with diverse threshold values were identified, multiploid CTCs with the threshold of ≥2 per 7.5 m L and multiploid plus triploid CTCs with the threshold of ≥4, which were found to significantly correlate with poor progression-free survival(PFS) and overall survival(OS). In particular, patients with ≥10% increased multiploid CTCs after an initial 6 weeks of therapy had poor PFS and OS, whereas improved PFS and OS were observed on those who had ≥10% decreased multiploid CTCs. After adjusting for clinically significant factors, ≥10% increased post-therapy multiploid CTCs was the only independent predictor of PFS and OS.Conclusions: Aneuploidy of CTCs correlates with prognosis of AGC patients. Quantitative comparison monitoring multiploid CTCs before and after therapy may help predict improved or inferior prognosis and chemoresistance.Yilin Li Xiaotian Zhang Jifang Gong Qiyue Zhang Jing Gao Yanshuo Cao Daisy Dandan Wang Peter Ping Lin Lin Shen 2016Chinese Journal of Cancer Research2016,28,6:7
16A study of different fluid droplets impacting on a liquid film显示文摘微滴动力学的知识提供在多相的流动预言压力落下,劫盗和腐蚀禁止者分发的基础。微滴尺寸和它的分发也决定在不同阶段之间的分离效率。试验性的观察与不同液体,微滴尺寸和速度为微滴冲击被进行,并且拍摄厚度。观察转变边界与不同作者开发的模型相比。为深水池表面上的冲击,麻莲果并且为打起浪花的 Tropea 关联不在这研究同意试验性的结果。黄雾和 Gosman 为弹起的批评威伯数字同意水结果然而并非油结果。为在弹起之间的转变边界的三新关联,结合, jetting 并且打起浪花被建议并且与试验性的观察相比。Huang Qiyu Zhang Holden 2008Petroleum Science2008,5,1:6
17The mechanism of side reaction induced capacity fading of Ni-rich cathode materials for lithium ion batteries显示文摘Ni-rich cathode materials show great potential of applying in high-energy lithium ion batteries,but their inferior cycling stability hinders this process.Study on the electrode/electrolyte interfacial reaction is indispensable to understand the capacity failure mechanism of Ni-rich cathode materials and further address this issue.This work demonstrates the domain size effects on interfacial side reactions firstly,and further analyzes the inherent mechanism of side reaction induced capacity decay through comparing the interfacial behaviors before and after MgO coating.It has been determined that LiF deposition caused thicker SEI films may not increase the surface film resistance,while HF erosion induced surface phase transition will increase the charge transfer resistance,and the later plays the dominant factor to declined capacity of Ni-rich cathode materials.This work suggests strategies to suppress the capacity decay of layered cathode materials and provides a guidance for the domain size control to match the various applications under different current rates.Daozhong Hu Yuefeng Su Lai Chen Ning Li Liying Bao Yun Lu Qiyu Zhang Jing Wang Shi Chen Feng Wu 2021Journal of Energy Chemistry2021,30,7:5
18Effects of protein sources for milk replacers on growth performance and serum biochemical indexes of suckling calves显示文摘This study investigated the effects of protein sources for milk replacers on growth performance and serum biochemical indexes of suckling calves. Fifty Chinese Holstein bull calves with similar BW and age were randomly allocated to 5 groups(1 control and 4 treatments) of 10 calves in each group. Five types of milk replacers were designed to have the same level of energy and protein. The protein source for milk replacers of the control group was full milk protein(MP). The protein source of milk replacers of the 4 treatment groups was composed of MP and one vegetable protein(VP)(30 and 70% of total protein). The4 types of VP were soybean protein concentrate(SP), hydrolyzed wheat protein(WP), peanut protein concentrate(PP), and rice protein isolate(RP). Results of the experiment showed: 1) there was no significant difference on average daily gain(ADG) and feed:gain ratio(F:G) among the MP, SP and RP groups(P > 0.05), whereas the ADG and F:G of the WP and PP groups were significantly lower compared with the MP group(P < 0.05); 2) there was not a significant difference in withers height, body length and heart girth among treatment groups compared with the MP group(P > 0.05). Thereby the 4 VP milk replacers had no adverse effects on body size of calves; 3) all groups showed no significant difference in the serum contents of urea nitrogen, total protein, albumin, globulin, β-hydroxybutyrate, growth hormone, insulin-like growth factor-1, and the ratio of albumin to globulin(A:G)(P> 0.05). In conclusion, SP or RP(accounts for 70% of the total protein) as calf milk replacers could substitute MP, whereas wheat gluten and PP had a significant adverse effect on growth performance in this experiment.Kaiwu Huang Yan Tu Bingwen Si Guishan Xu Jiangpeng Guo Feng Guo Chuntao Yang Qiyu Diao 2015Animal Nutrition2015,,4:5
19Digital Twin for Human-Robot Interactive Welding and Welder Behavior Analysis显示文摘This paper presents an innovative investigation on prototyping a digital twin(DT)as the platform for human-robot interactive welding and welder behavior analysis.This humanrobot interaction(HRI)working style helps to enhance human users'operational productivity and comfort;while data-driven welder behavior analysis benefits to further novice welder training.This HRI system includes three modules:1)a human user who demonstrates the welding operations offsite with her/his operations recorded by the motion-tracked handles;2)a robot that executes the demonstrated welding operations to complete the physical welding tasks onsite;3)a DT system that is developed based on virtual reality(VR)as a digital replica of the physical human-robot interactive welding environment.The DT system bridges a human user and robot through a bi-directional information flow:a)transmitting demonstrated welding operations in VR to the robot in the physical environment;b)displaying the physical welding scenes to human users in VR.Compared to existing DT systems reported in the literatures,the developed one provides better capability in engaging human users in interacting with welding scenes,through an augmented VR.To verify the effectiveness,six welders,skilled with certain manual welding training and unskilled without any training,tested the system by completing the same welding job;three skilled welders produce satisfied welded workpieces,while the other three unskilled do not.A data-driven approach as a combination of fast Fourier transform(FFT),principal component analysis(PCA),and support vector machine(SVM)is developed to analyze their behaviors.Given an operation sequence,i.e.,motion speed sequence of the welding torch,frequency features are firstly extracted by FFT and then reduced in dimension through PCA,which are finally routed into SVM for classification.The trained model demonstrates a 94.44%classification accuracy in the testing dataset.The successful pattern recognition in skilled welder operations should benefit to accelerate novice welder training.Qiyue Wang Wenhua Jiao Peng Wang YuMing Zhang 2021IEEE/CAA Journal of Automatica Sinica2021,8,2:5
20Controlled-release neurotensin-loaded silk fibroin dressings improve wound healing in diabetic rat model显示文摘Diabetic foot ulcers(DFU),which may lead to lower extremity amputation,is one of the severe and chronic complications of diabetic mellitus.This study aims to develop,and use dressings based on Silk fibroin(SF)as the scaffold material,gelatin microspheres(GMs)as the carrier for the neurotensin(NT),a neuropeptide that acts as an inflammatory modulator in wound healing and NT as accelerate wound healing drug to treat DFU.We evaluated the wound healing processes and neo-tissue formation in rat diabetic model by macroscopic observation,histological observation(H&E staining and Masson's trichrome staining)and immunofluorescence analysis at 3,7,14,21 and 28 post-operation days.Our results show that the NT/GMs/SF group performance the best not only in macroscopic healing and less scars in 28 post-operation days,but also in fibroblast accumulation in tissue granulation,collagen expression and deposition at the wound site.From release profiles,we can know the GMs are a good carrier for control release drugs.The SEM results shows that the NT/GMs/SF dressings have an average pore size are 40–80μm and a porosity of∼85%,this pore size is suit for wound healing regeneration.These results suggest that the NT/GMs/SF dressings may work as an effective support for control release NT to promote DFU wound healing.Jianghui Liu Liwei Yan Wei Yang Yong Lan Qiyu Zhu ongjie Xu Canbin Zheng Rui Guo 2019Bioactive Materials2019,4,1:5
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