维普中文期刊产品整合服务
59篇 您的检索式:作者名="ZHAO Jiale"
    题名 作者 年代 出处 被引量
1Land Use Effects on the Distribution and Speciation of Heavy Metals and Arsenic in Coastal Soils on Chongming Island in the Yangtze River Estuary, China显示文摘The reclamation of tidal flats has been one of the important approaches to replenish the arable lands in the coastal areas; pollution status of reclaimed soils has received wide attention recently, especially for the study of heavy metals due to the relative high pollutant concentrations in wetlands. To understand the impact of land use change on heavy metal and arsenic(As) geochemistry by the reclamation of wetlands for agriculture, surface soils and soil profiles were collected from the agricultural land reclaimed in the 1990 s and the intertidal flat wetland at Dongtan on Chongming Island in the Yangtze River Estuary, China. The soil samples were analyzed for total concentrations and chemical speciation of chromium(Cr), zinc(Zn), copper(Cu), lead(Pb), nickel(Ni), cadmium(Cd) and As using inductively coupled plasma mass spectrometry(ICP-MS). Results showed that soil properties(salinity, total organic carbon and grain-size distribution) and the concentrations of heavy metals and As in the soils differed under the different land use types. The conversion of wetland to forest had caused obvious losses of all the measured heavy metals. In paddy field and dryland with frequent cultivation, the concentrations of Cr, Zn, Cu, Ni and As were higher when compared to forest land which was disturbed rarely by human activities. Speciation analysis showed that Cr, Zn, Cu, Ni and As were predominated by the immobile residual fraction, while Pb and Cd showed relatively higher mobility. In general, metal(except Ni) and As mobility decreased in the following order: wetland> dryland ≥ paddy field > forest land, which suggested that the reclaimed soils had lower metal and As mobility than the intertidal flat wetland. The results of this study contribute to a better understanding of the effects of land use on heavy metals and As in the reclaimed soils of the study area and other similar coastal areas.ZHENG Rong ZHAO Jiale ZHOU Xiu MA Chao WANG Li GAO Xiaojiang 2016Pedosphere2016,26,1:12
2Premature Tapetum Degeneration: a Major Cause of Abortive Pollen Development in Photoperiod Sensitive Genic Male Sterility in Rice显示文摘Photoperiod-sensitive genic male-sterile (PSGMS) rice (Oryza sativa L.), a natural mutant found in the rice cultivar Nongken 58, is very useful for the development of hybrid rice cultivars. Despite its widespread use in breeding programs, the initial stage of the abortive development of PSGMS rice and the possible cytological mechanisms of pollen abortion have not been determined. In the present study, a systematic cytological comparison of the anther development of PSGMS rice with its normal fertile counterpart is conducted. The results show that pollen abortion in PSGMS rice first occurs before the pollen mother cell (PMC) stage, and continues during the entire process of pollen development until pollen degradation. The abortive process was closely associated with the abnormal behavior of the tapetum. Although tapetum degeneration in PSGMS rice initiates already at the PMC stage, it proceeds slowly and does not complete until the breakdown of the pollen. Such cytological observations were supported by the results of the TUNEL (TdT-mediated dUTP Nick End Labeling) assay, which detects DNA fragmentation resulting from programmed cell death (PCD), indicating that the premature tapetum degeneration is in the process of PCD.Yinlian Shi Sha Zhao Jialing Yao 2009Journal of Integrative Plant Biology2009,51,8:9
3Design and key parameter optimization of an agitated soybean seed metering device with horizontal seed filling显示文摘Since the low seed filling speed of mechanical seed metering devices reduces the low qualified rate of seed spacing during high-speed practices,it is significant to design agitated seed metering devices with horizontal seed filling that are suitable for high-speed practices.The combination of horizontal seed filling and agitated seed filling can accelerate the seed filling of mechanical seed metering devices,and improve the qualified rate of seed spacing during high-speed practices.In this study,theoretical analysis,discrete element method-based simulation and indoor bench test verification were conducted to investigate how key parameters of the agitated seed metering device with horizontal seed filling(angles,installation position and number of agitating plates,diameters of convex spoons)would affect the characteristics of soybean seed movement,seed number and seeding performance(qualified index,multiple index,missing seeding index)under different working speeds.Computer-based simulation,test design and regression analysis were combined to analyze the population moving rules and optimize the design parameters of seed metering devices.Based on the test scheme as designed,simulations were conducted on Fluent EDEM,and the optimal angle of the agitating plates was determined by analyzing the population migrating rules.Regression equations were established through the regression of test results,and used to find out the optimal design parameters(diameter of convex spoon,positions and number of agitating plates)of seed metering devices.Then the optimal parameter combination among different working conditions was determined that the angle,position and number of agitating plates were 30°,24.4 mm,and 13,respectively,and the diameter of convex spoon was 11.0 mm.With the optimal parameter combination and at the seeding speed of 12 km/h,the qualified index,multiple index and missing seeding index were 93.1%,2.1%and 4.8%,respectively.Under high-speed practices,the new seed metering device was not significantly different from the pneumatic seed metering device,but significantly outperformed the mechanical seed metering device.Honglei Jia Yulong Chen Jiale Zhao Mingzhuo Guo Dongyan Huang Jian Zhuang 2018International Journal of Agricultural and Biological Engineering2018,11,2:8
4Stalk cutting mechanism of no-tillage planter for wide/narrow row farming mode显示文摘A no-tillage planter of narrow row spacing was designed according to the agronomic requirements of wide/narrow row farming mode in the black soil region of Northeast China.Due to the narrow spacing of the seeder unit,a gear-tooth stalk cutting mechanism was designed in order to prevent residues from blocking the planter.The basic parameters,number and edge curve of the stalk cutting blade were designed and optimized.Three-factor and three-level combined orthogonal experiments were conducted using the factors of working speed(1.12 m/s,1.57 m/s and 2.02 m/s),tillage depth(75 mm,90 mm and 105 mm)and cutter spacing(15 mm,30 mm and 45 mm),which significantly affected stalk cutting rate and soil disturbance rate.The optimal combination is the working speed of 1.62 m/s,tillage depth of 92 mm and cutter spacing of 35 mm.Under this condition,the stalk cutting rate is more than 90%and soil disturbance rate is 7.5%-12.0%.The performance of the new no-tillage planter was tested by using the above parameters.The results showed that the no-tillage planter of narrow row spacing came up to the relevant national standards in China.Jia Honglei Jiang Xinming Yuan Hongfang Zhuang Jian Zhao Jiale Guo Mingzhuo 2017International Journal of Agricultural and Biological Engineering2017,10,2:5
5Analysis and experiment on cutting performances of high-stubble maize stalks显示文摘In the cold areas of Northeast China,maize high-stubble cutting is a novel stalk conservation tillage method,in which the maize stalks are under a unilaterally-fixed no-support cutting status.Thus,reducing the cutting resistance and power consumption of maize stalks under this status is very significant for the development of high-efficiency high-stubble cutting devices.Based on a self-designed testing system that highly restored the maize high-stubble cutting conditions and by means of experimental design and mathematic statistics,the effects of working parameters(blade angle,blade shape,cutting speed and cutting angle)on the maximum cutting resistance and power consumption were studied.By analyzing stress conditions during the stalk cutting process,six mathematic models were built to express the relationships between individual factors and the maximum cutting resistance or cutting power consumption.Through model optimization,the parameter combination for optimal cutting performance of maize stalks under unilaterally-fixed no-support cutting status was obtained:blade angle is 18°,blade shape is isosceles triangle,cutting speed is 9.5 m/s,and cutting angle is 75°.Field validation experiments under this parameter combination showed that the maximum cutting resistance was(55.23±3.50)N(declined by 11.04%),and power consumption was(11.41±1.04)J(declined by 16.65%).The research findings can be a reference for the design and development of maize high-stubble cutting devices.Zhao Jiale Huang Dongyan Jia Honglei Zhuang Jian Guo Mingzhuo 2017International Journal of Agricultural and Biological Engineering2017,10,1:5
6Design of bionic locust mouthparts stubble cutting device显示文摘Given the technical problems of low maize stubble breaking efficiency,large cutting torque and high power consumption faced during springtime no-till planting in Northeast China,we designed a high-performance coupling bionic stubble cutting device capable by integrating the structure(multi-segment and serrate)and cutting mode(isokinetic and symmetrical)of locust mouthparts.Methods of bionic construction,mechanism design,theoretical analysis,parameter optimization,Arduino systems and intelligent control were combined to design a planetary gear mechanism and an intelligent speed control system.In particular,the bionic cutting blade could reconstruct the multi-segment and serrate structure of locust mouthparts,while the planetary gear mechanism and the intelligent speed control system jointly comprised the bionic drive system,which could simulate the isokinetic and symmetrical cutting mode,thereby bionically coupling morphological structures and movement patterns.Analysis of comparative tests showed the coupling bionic cutting device could reduce the cutting torque by 26.6%-31.6%and the power consumption by 21.9%-26.1%.This work confirmed that coupling bionic method can significantly improve the stubble cutting efficiency,which was a valuable contribution to the design of stubble cutting device for no-till planter.Jiale Zhao Mingzhuo Guo Yun Lu Dongyan Huang Jian Zhuang 2020International Journal of Agricultural and Biological Engineering2020,13,1:4
7Unified optimal power flow model for AC/DC grids integrated with natural gas systems considering gas-supply uncertainties显示文摘A unified optimal power flow(OPF) model for AC/DC grids integrated with natural gas systems is proposed for the real-time scheduling of power systems.Herein, the primary physical couplings underlying this coordinated system are modeled and investigated. In addition, the uncertainties of gas loads are considered when studying the role of gas supply for gas-fired units in power system operations. The nonlinear gas system constraints are converted to the second-order cone forms that allow for the use of the Benders decomposition techniques and the interior-point method to obtain the optimal solution. The numerical results of the modified IEEE 118-bus test system that integrates the Belgium 20-node natural gas system demonstrate the effectiveness of the proposed model. The effects of gas demand uncertainties on the optimal schedule of thermal generators are investigated as well.Jiale FAN Xiaoyang TONG Junbo ZHAO 2018Journal of Modern Power Systems and Clean Energy2018,6,6:3
8The BH3-only protein BAD mediates TNFα cytotoxicity despite concurrent activation of IKK and NF-κB in septic shock显示文摘煽动性的 cytokine TNF 在许多煽动性、传染的疾病的病理起一个关键作用。然而,在这些疾病位于 TNF cytotoxicity 下面的机制不完全地被理解。这里,我们报导 pro-apoptotic BCL-2 家庭成员坏调停尽管有在由由得到多重机关的织物损坏并且贡献死亡在在有教养的房间并且在 vivo 导致 apoptosis 的 vitro 的 IKK 和 NF-B 的并发的激活的 TNF cytotoxicity 腐败吃惊。在高剂量, TNF 显著地通过 Src-p190GAP 小径的激活使 RhoA 失去活性,导致巨大的肌动朊压力纤维 destabilization,从细胞骨架由实质的坏版本列在后面到 cytosol。在这个条件下面,激活 IKK 没有通过所有 cytosolic 到 phosphorylate 坏,允许对线粒体不适宜的 non-phosphorylated 的 translocation 触发 apoptosis。Polymicrobial 感染利用象高剂量的 TNF 的一样的机制得到多重机关的联系 apoptosis 的织物损坏。因而,损失坏或坏 pro-apoptotic 活动的消除保护老鼠免受多重机关和还原剂死亡率的织物损坏的伤害。我们的结果支持在的一个模型坏调停尽管有在有教养的哺乳动物的房间并且在的 IKK-NF-B 小径的并发的激活的 TNF cytotoxicity 腐败吃惊。Jie Yan Hao Zhang Jialing Xiang Yu Zhao Xiang Yuan Beicheng Sun Anning Lin 2018Cell Research2018,28,7:2
9Loss of algal Proton Gradient Regulation 5 increases reactive oxygen species scavenging and H2 evolution显示文摘We have identified hpm91, a Chlamydomonas mutant lacking Proton Gradient Regulation5(PGR5)capable of producing hydrogen(H2) for 25 days with more than 30-fold yield increase compared to wild type.Thus, hpm91 displays a higher capacity of H2 production than a previously characterized pgr5 mutant. Physiological and biochemical characterization of hpm91 reveal that the prolonged H2 production is due to enhanced stability of PSII, which correlates with increased reactive oxygen species(ROS) scavenging capacity during sulfur deprivation. This anti-ROS response appears to protect the photosynthetic electron transport chain from photooxidative damage and thereby ensures electron supply to the hydrogenase.Mei Chen Jin Zhang Lei Zhao Jiale Xing Lianwei Peng Tingyun Kuang Jean-David Rochaix Fang Huang 2016Journal of Integrative Plant Biology2016,58,12:2
10Photocrosslinking silver nanoparticles–aloe vera–silk fibroin composite hydrogel for treatment of full-thickness cutaneous wounds显示文摘Damage to the skin causes physiological and functional issues.The most effective treatment approach is the use of wound dressings.Silk fibroin(SF)is a promising candidate biomaterial for regulating wound healing;however,its antibacterial properties and biological activity must be further improved.In this study,a photocrosslinking hydrogel was developed to treat full-thickness cutaneous wounds.The composite hydrogel(Ag-AV-SF hydrogel)was prepared by introducing the silver nanoparticles(AgNPs)and aloe vera(AV)as the modifiers.In vitro study exhibited great antibacterial ability,biocompatibility and cell-proliferation and-migration-promoting capacities.It also showed the pH-response releasing properties which release more AgNPs in a simulated chronic infection environment.The healing effect evaluation in vivo showed the healing-promoting ability of the Ag-AV-SF hydrogel was stronger than the single-modifiers groups,and the healing rate of it reached 97.02%on Day 21,higher than the commercial wound dressing,silver sulfadiazine(SS)cream on sale.Additionally,the histological and protein expression results showed that the Ag-AV-SF hydrogel has a greater effect on the pro-healing regenerative phenotype with M2 macrophages at the early stage,reconstructing the blood vessels networks and inhibiting the formation of scars.In summary,the Ag-AV-SF hydrogel developed in this study had good physical properties,overwhelming antibacterial properties,satisfactory biocompatibility and significantly promoting effect on cell proliferation,migration and wound healing.Overall,our results suggest that the Ag-AV-SF hydrogel we developed has great potential for improving the wound healing in clinical treatment.Yangkun Liu JinChuan Fan MingQi Lv Kepeng She Jiale Sun Qingqing Lu Changhao Han SongTao Ding Shuang Zhao GuiXue Wang YuChan Zhang GuangChao Zang 2021Regenerative Biomaterials2021,8,6:2
11Solvent-enhanced Depolymerization of Lignin under Microwave Irradiation显示文摘Lignin is considered an ideal natural material for the production of sustainable monophenols.In this study,a microwave-assisted depolymerization(MAD)strategy was developed.The introduction of solvent vapors in the dynamic vapor flow reaction system was performed to enhance the lignin conversion efficiency.The results showed that no liquid products were generated from the MAD of lignin without solvent vapors.With the introduction of solvents(CH_(3)OH,HCHO,HCOOH,and CH_(2)Cl_(2)),liquid products appeared(especially with CH_(2)Cl_(2),which had the highest yield of 41.9 wt%).Results from gas chromatography/mass spectrometry of liquid products showed that seven kinds of compounds,including guaiacols,phenols,syringols,methoxyphenyls,heterocycles,esters,and aromatics were identified.CH_(2)Cl_(2) can significantly enhance the production of monophenols(guaiacols,phenols,and syringols).The introduction of these solvent vapors can also facilitate the generation of porous char with high Brunauer-Emmett-Teller specific surface areas.Some carbon nanospheres deposited on the surface of the char were obtained with the assistance of CH_(2)Cl_(2).This study provides a facile method for the utilization of lignin in the field of bio-based fine chemicals.Wenliang Wang Jiale Huang Xingjin Zhao Xiaoxiao Ren Hui Miao 2021Paper And Biomaterials2021,6,3:2
12Variable elliptical vibrating screen: Particles kinematics and industrial application显示文摘Traditional vibrating screen usually adopts the linear centralized excitation mode,which causes the difficulty in particles loosening and low screening efficiency.The variable elliptical vibrating screen(VEVS)trajectory is regulated to adapt the material mass along the direction of the screen length,improving the particles distribution as well as the screening efficiency.In this work,a theoretical model was developed for analyzing the screen surface motion law during VEVS-based screening process.An equation was obtained to show the relationship between the horizontal amplitude and the vertical amplitude.The materials kinetic characteristics were studied by using high-speed camera during screening process.Compared with equal-amplitude screen(EAS),the material moving velocity was increased by 13.03%on the first half but decreased by 3.52% on the second half,and the total screening time was reduced by 9.42% by using VEVS.In addition,-6 mm screening test was carried out.At the length of VEVS equaled to 1.2 m,the screening efficiency and the total misplaced material content were 92.50% and 2.90%,respectively.However,the screening efficiency was 89.91% and the total misplaced material content was 3.76% during EAS-based screening process.Furthermore,when external moisture is 5.96%,the screening efficiency of VEVS could reach 86.95%.The 2 TKB50113 type VEVS with double-layered screen surface used in Huoshizui Coal Mine was 5.0 m in width and 11.3 m in length.The areas of single layer and double layer were 56.5 and 113 m~2,respectively.In industrial production,the processing capacity was 2500-3000 t/h and the screening efficiency was larger than 90%.Chenlong Duan Jiale Yuan Miao Pan Tao Huang Haishen Jiang Yuemin Zhao Jinpeng Qiao Weinan Wang Shijie Yu Jiawang Lu 2021International Journal of Mining Science and Technology2021,31,6:2
13Effective nanotherapeutic approach for metastatic breast cancer treatment by supplemental oxygenation and imaging-guided phototherapy显示文摘Metastasis remains the primary cause for mortality of breast cancer.Despite advances in current therapeutic agents,patients with metastatic breast cancer still have poor prognoses.Tumor hypoxia,a key microenvironment factor,is emerging as an attractive target to prevent metastasis and is also involved with resistance to phototherapy.Here,we show an effective nanotherapeutic approach based on manganese dioxide-coated polydopamine nanocarriers to trigger robust anti-tumor and anti-metastasis responses against metastatic breast cancer by supplemental oxygenation and multimodal imaging-guided phototherapies.In cancer cells,the produced oxygen by the developed nanoplatform decreases the expression of hypoxia-inducible factors 1 a to inhibit tumor metastasis,and enhances the efficacy of photodynamic therapy.This nanotherapeutic approach enables the combined photodynamic/photothermal treatments with great inhibition on cell migration and invasion in vitro.Moreover,the nanotherapeutics effectively suppresses primary tumor progress and inhibits lung metastasis in v ivo in a breast cancer mouse model with satisfying biosafety.This study suggests that the tumor hypoxia-targeting nanotherapeutics have great potential for preventing and treating metastatic cancers.Jialing Hu Fuan Wang Feng Liu Wentong Sun Qunying Jiang Yahua Liu Yun Zhao Xiaoqing Liu 2020Nano Research2020,13,4:1
14Design and test of bionic wide-ridge soybean tilling-sowing machine显示文摘The insufficient accumulated temperature of the plow layer during spring tillage in Northeast China severely restricts soybean root growth and whole-plant development.High regional soil viscosity further complicates tilling-sowing.In order to seek a solution to these problems,field comparative tests were conducted to investigate the effects of shallow-loosening(SL)and reshaping ridge(RR)on soil temperature and soybean root growth.Compared with conventional tillage(CT),SL and RR significantly increased the soil temperatures within 0-25 cm(p<0.05)and 0-15 cm(p<0.05),respectively.In particular,higher soil temperature within 15-25 cm was established after SL than after RR(p<0.05).Additionally,SL promoted substantially more vigorous soybean development(seedling height)than RR(p<0.05),which in turn led to a significant outperformance over CT(p<0.05).Further,bionics,reverse engineering,and curve fitting were combined to design a hare claw toe bionic shallow-loosening shovel and a pangolin scale bionic ridging shovel with anti-drag functions.Field verification tests confirmed that these two bionic tillage devices outperformed the conventional tillage device in reducing tractive drag by 13%-19%.Based on the results of these tests,a 2BGD-6(110)bionic wide-ridge soybean tilling-sowing machine was designed,which was capable of shallow-loosening,reshaping ridge and sowing.The new machine significantly reduced the tractive drag,efficiently loosened the soil,increased soil temperature,and accelerated soybean root growth.This study can provide a theoretical and practical reference for soybean production in Northeast China.Honglei Jia Mingzhuo Guo Jiale Zhao Dongyan Huang Jian Zhuang Jiangtao Qi 2019International Journal of Agricultural and Biological Engineering2019,12,1:1
15UV light absorbers executing synergistic effects of passivating defects and improving photostability for efficient perovskite photovoltaics显示文摘Metal halide perovskite-based solar cells(PSCs) have rapidly-increased power conversion efficiency(PCE)exceeding 25% but poor stability especially under ultraviolet(UV) light. Meanwhile, non-radiative recombination caused by diverse defects in perovskite absorbers and related interfaces is one of the major factors confining further development of PSCs. In this study, we systematically investigate the role of 2-(2-hydroxy-5-methylphenyl)benzotriazole(UVP) additive in perovskite layers. By adjusting the amount of doped UVP, the quality of perovskite absorbers is significantly improved with enlarged grains, longer lifetime and diffusion length of charge carriers. Furthermore, UVP not only reduces defects for less nonradiative recombination, but also matches energy level alignment for efficient interfacial charge extraction. X-ray photoelectron spectroscopy confirms that N-donor of UVP molecule coordinates with undercoordinated Pb^(2+) on the surface. Interestingly, UVP incorporated in PbI_(2) protects the perovskite by absorbing UV through the opening and closing of the chelating ring. Eventually, the UVP treated PSCs obtain a champion PCE of 22.46% with remarkably enhanced UV stability, retaining over 90% of initial PCE after 60 m W/cm^(2) strong UV irradiation for 9 h while the control maintaining only 74%. These results demonstrate a promising strategy fabricating passivated and UV-resistant perovskite materials simultaneously for efficient and stable perovskite photovoltaics.Jiale Li Wenjing Qi Yameng Li Sumin Jiao Hao Ling Peng Wang Xin Zhou Khumal Sohail Guangcai Wang Guofu Hou Jingshan Luo Ying Zhao Liming Ding Yuelong Li Xiaodan Zhang 2022Journal of Energy Chemistry2022,31,4:1
16Positional effects on efficiency of CRISPR/Cas9-based transcriptional activation in rice plants显示文摘The nuclease-dead Cas9(dCas9)has been reprogrammed for transcriptional activation by fusing dCas9 to a transcriptional activation domain.In the presence of a guide RNA(gRNA),the dCas9 fusions specifically bind to regions of a promoter to activate transcription.Significant amount of effort has been directed toward the identification and optimization of the fusions of dCas9-activation domain,but very little is known about the impact of gRNA target positions within a promoter in plants on transcriptional activation efficiency.The dCas9–6TAL–VP128 system(dCas9-TV)has been optimized to activate transcription in plants.Here we use the dCas9-TV to activate transcription of OsWOX11 and OsYUC1,two genes that cause dramatic developmental phenotypes when overexpressed.We designed a series of gRNAs targeting the promoters of the two genes.We show that gRNAs that target regions within 350 bp upstream of the transcription start site were most effective in transcriptional activation.Moreover,we show that using two gRNAs that simultaneously target two discrete sites in a promoter can further enhance transcription.This work provides guidelines for designed transcriptional activation through CRISPR/dCas9 systems.Xiaoyu Gong Tao Zhang Jialing Xing Rongchen Wang Yunde Zhao 2020aBIOTECH2020,1,1:1
17Design and experiment of a subsoiling variable rate fertilization machine显示文摘In order to improve soil fertility and fertilizer utilization,a subsoiling variable rate fertilization machine based on conservation tillage and precision agriculture was designed and tested.The relationship between suspension parameters and penetrating distance was analyzed,and a matching model between fertilizing quantity and penetrating distance was established.The variable rate fertilization control machine was developed based on an Advantech PCM-9363 industrial control mainboard.The machine operates under two patterns:DGPS-based positioning and straight-line path positioning based on a planar coordinate system.This machine can perform on-demand fertilization according to the spatial differences in soil nutrients and the prescription maps pre-set before the operation.Field experiments showed the machine has a subsoiling stability of 92.5%,a soil breaking rate of 61.1%,a maximum positioning relative error of 2.68%and a maximum variable rate fertilization error of 3.89%.The subsoiling performance and variable rate fertilization indices of this machine satisfy the requirements of GB/T24675.2-2009.The tested indices meet the national and industrial standards and satisfy the design requirements.The findings of the research can be used as the structural design of the subsoiling variable rate fertilization machine.Jiangtao Qi Xinliang Tian Yang Li Xuhui Fan Hongfang Yuan Jiale Zhao Honglei Jia 2020International Journal of Agricultural and Biological Engineering2020,13,4:1
18Synthesis and proper- ties of X - type alkyl sulfonate gemini surfaetants derived fi'om cyanuric chloride显示文摘LI PENGFEI CHEN QIHU ZHAO JIALE 2012Journal of Surfaetants and Detergents2012,4,45:1
19Design of bionic mole forelimb intelligent row cleaners显示文摘In Northeast China under no-till conditions the amount of maize stubble of the previous year's crop severely limit the quality of sowing operations by unstable operating depth of normal planter row cleaners.Thus,in this study,bionic mole forelimb intelligent row cleaners comprising of a cleaning device and a depth intelligent control system were designed.Via theoretical analysis,computer-based simulation,and test optimized design,the mechanism of bionic cleaners that possessed the forelimb motion morphology and the front claw toe structural morphology of moles was studied,the effects of structural parameters of bionic cleaners on the cleaning quality were clarified.Based on a pressure sensor,a depth intelligent control system was designed,which enhanced the depth stability of the cleaning devices.The types of bionic cleaners were identified by simulation on EDEM software.Then regression equations between different parameters and operation evaluation indices were established,and the optimal parameter combination was identified on Design-Expert software with a rotation radius of 150 mm and a motion deflection angle of 15.8°,at which the cleaning rate was 91.3%.Field tests under the optimal parameter combination showed that bionic cleaners outperformed normal planar cleaners,and the depth intelligent control system could efficiently improve the performance of the row cleaners.The straw cleaning rate of the bionic mole forelimb intelligent row cleaners under total straw mulching fields was 90.9%,which was 21.3%higher than that of normal cleaners,and the ground surfaces after operation satisfied the agricultural requirements of maize no-tillage sowing.Honglei Jia Qi Wang Dongyan Huang Longtu Zhu Mingwei Li Jiale Zhao 2019International Journal of Agricultural and Biological Engineering2019,12,3:1
20Effects of cerium on nitrogen metabolism of peach plantlet in vitro显示文摘Song Weiping Hong Fashui Wan Zhigang Zhou Yuzhen Gu Fugen Xu Hongoing Yu Mingliang Chang Youhong Zhao Mizhen Su Jiale 2003Biological Trace Element Research2003,,3:1
返回顶部 每页显示:
共3页 首页 上一页 第1页 下一页 末页 /3 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费