|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | The next generation models for crops and agro-ecosystems显示文摘Growth in population, decrease in arable land area, and change in climate are endangering our food security. Precision agriculture has the potential to increase crop productivity thorough tailored agricultural practices for different growing areas. Many models of crops and agro-ecosystems capable of predicting interaction between plants and environments have been developed for precision agriculture. Currently, there are several representative categories of crop and agro-ecosystem models, including the de Wit school models, the DSSAT series models and the APSIM series models, which have contributed substantially to improvement of agricultural practices. However, these models are weak in predicting performances of crops under environmental and genetic perturbations are generally weak, which severely limits the application of these models in guiding precision agriculture. We need to develop the next generation crop and agro-ecosystems models with a high level of mechanistic basis, which can be integrated with high throughput data and can predict the heterogeneity of environmental factors inside canopy and dynamic canopy photosynthesis. In developing such a model close collaboration is inevitably required among scientists from different disciplines. The successful development and application of such models will undoubtedly advance precision agriculture through providing better agronomical practices tailored for different growing environments. These models will also form a basis to identify breeding targets for increased productivity at given location with given soil and climatic conditions. | ZHU XinGuang ZHANG GuiLian THOLEN Danny WANG Yu XIN ChangPeng SONG QingFeng | 2011 | Science China(Information Sciences)2011，54，3： | 6 |
| 2 | Atomistic Surface Passivation of CH_(3)NH_(3)PbI_(3) Perovskite Single Crystals for Highly Sensitive Coplanar-Structure X-Ray Detectors显示文摘Organic-inorganic halide perovskites(OIHPs)are recognized as the promising next-generation X-ray detection materials.However,the device performance is largely limited by the ion migration issue of OIHPs.Here,we reported a simple atomistic surface passivation strategy with methylammonium iodide(MAI)to remarkably increase the ion migration activation energy of CH_(3)NH_(3)PbI_(3)single crystals.The amount of MAI deposited on the crystal surface is finely regulated by a self-assemble process to effectively suppress the metallic lead defects,while not introducing extra mobile ions,which results in significantly improved dark current stability of the coplanar-structure devices under a large electric field of 100Vmm^(-1).The X-ray detectors hence exhibit a record-high sensitivity above 700,000μC Gy^(-1)_(air) cm^(-2)under continuum X-ray irradiation with energy up to 50 keV,which enables an ultralow X-ray detection limit down to 1.5 nGy_(air)s^(-1).Our findings will allow for the dramatically reduced X-ray exposure of human bodies in medical imaging applications. | Yilong Song Liqi Li Weihui Bi Mingwei Hao Yifei Kang Anran Wang Zisheng Wang Hanming Li Xiaohui Li Yanjun Fang Deren Yang Qingfeng Dong | 2020 | Research2020，，1： | 5 |
| 3 | Targeted disruption of tyrosinase causes melanin reduction in Carassius auratus cuvieri and its hybrid progeny显示文摘The white crucian carp(Carassius auratus cuvieri,WCC) not only is one of the most economically important fish in Asia,characterized by strong reproductive ability and rapid growth rates,but also represents a good germplasm to produce hybrid progenies with heterosis.Gene knockout technique provides a safe and acceptant way for fish breeding.Achieving gene knockout in WCC and its hybrid progeny will be of great importance for both genetic studies and hybridization breeding.Tyrosinase(TYR) is a key enzyme in melanin synthesis.Depletion of tyr in zebrafish and mice results in mosaic pigmentation or total albinism.Here,we successfully used CRISPR-Cas9 to target tyr in WCC and its hybrid progeny(WR) derived from the cross of WCC(♀) and red crucian carp(Carassius auratus red var.,RCC,♂).The level of TYR protein was significantly reduced in mutant WCC.Both the mutant WCC and the mutant WR showed different degrees of melanin reduction compared with the wild-type sibling control fish,resulting from different mutation efficiency ranging from 60% to 90%.In addition,the transcriptional expression profiles of a series of pivotal pigment synthesis genes,i.e.tyrp1,mitfa,mitfb,dct and sox10,were down-regulated in tyr-CRISPR WCC,which ultimately caused a reduction in melanin synthesis.These results demonstrated that tyr plays a key role in melanin synthesis in WCC and WR,and CRISPR-Cas9 is an effective tool for modifying the genome of economical fish.Furthermore,the tyr-CRISPR models could be valuable in understanding fundamental mechanisms of pigment formation in non-model fish. | Qingfeng Liu Yanhua Qi Qiuli Liang Jia Song Junmei Liu Wuhui Li Yuqin Shu Min Tao Chun Zhang Qinbo Qin Jing Wang Shaojun Liu | 2019 | Science China(Life Sciences)2019，62，9： | 4 |
| 4 | Microstructure and composition engineering Yb single-filled CoSb_(3) for high thermoelectric and mechanical performances显示文摘A broad tunability of the thermoelectric and mechanical properties of CoSb_(3) has been demonstrated by adjusting the composition with the addition of an increasing number of elements.However,such a strategy may negatively impact processing repeatability and composition control.In this work,singleelement-filled skutterudite is engineered to have high thermoelectric and mechanical performances.Increased Yb filling fraction is found to increase phonon scattering,whereas cryogenic grinding contributes additional microstructural scattering.A peak zT of 1.55 and an average zT of about 1.09,which is comparable to the reported results of multiple-filled SKDs,are realized by the combination of simple composition and microstructure engineering.Furthermore,the mechanical properties of Yb single-filled CoSb_(3) skutterudite are improved by manipulation of the microstructure through cryogenic grinding.These findings highlight the realistic prospect of producing high-performance thermoelectric materials with reduced compositional complexity. | Zhenxing Zhou Matthias T.Agne Qihao Zhang Shun Wan Qingfeng Song Qing Xu Xiaofang Lu Shijia Gu Yuchi Fan Wan Jiang Gerald Jeffrey Snyder Lianjun Wang | 2019 | Journal of Materiomics2019，5，4： | 4 |
| 5 | Effect of chronic corticosterone-induced depression on circadian rhythms and age-related phenotypes in mice显示文摘Disrupted circadian rhythms are a recognized effect of depression,and our previous article demonstrated an association between depression and premature aging,but the underlying mechanisms are not well understood.In the present study,we used a mouse model of chronic corticosterone (CORT)-treated depression to elucidate a mechanism by which depression may be associated with the circadian clock and mediate age-related phenotypes.Mice received a daily injection of 20 mg/kg CORT for 21 consecutive days,and the depression-like behaviors of mice were identified by the sucrose intake test,tail suspension test and open field test.Our findings indicated that CORT injection may be correlatedwith the circadian clock by impairing circadian rhythms or shifting the phase values of clock genes.We also showed that CORT-treated mice exhibited a significant gradual reduction in body weight gain with increased oxidative stress, including reduced activity of antioxidant-related enzymes,reduced glutathione:glutathione disulfide ratio and cytochrome (Cyt)-C level,and elevated reactive oxygen species content.Moreover, chronic CORT injection affected inflammatory responses,the production of mitochondrial ATP and telomere shortening,which may be associated with the Sirtuin 3 (SIRT3)signaling pathway. Additionally,chronic CORT injection disrupted the circadian rhythms of some indexes of aging phenotypes and altered the phase values of these indexes.Our findings suggest that psychologically stressful conditions such as depression are linked to changes in circadian rhythms and agerelated phenotypes. | Lingyan iVla Qichen Shen Song Yang Xiaoxian Xie Qingfeng Xiao Chuanan Yu Lisha Cao Zhengwei Fu | 2018 | Acta Biochimica et Biophysica Sinica2018，50，12： | 4 |
| 6 | Superior performance and high service stability for Ge Te-based thermoelectric compounds显示文摘GeTe-based compounds have been intensively studied recently due to their superior thermoelectric performance,but their real applications are still limited so far due to the drastic volume variation that occurs during the rhombohedral–cubic phase transition,which may break the material or the material/electrode interface during service.Here,superior performance and high service stability for GeTe-based thermoelectric compounds are achieved by co-doping Mg and Sb into GeTe.The linear coefficient of thermal expansion before phase transition is greatly improved to match that after phase transition,yielding smooth volume variation around the phase transition temperature.Likewise,co-doping(Mg,Sb)in GeTe successfully tunes the carrier concentration to the optimal range and effectively suppresses the lattice thermal conductivity.A peak z T of 1.84 at 800 K and an average z T of 1.2 in 300–800 K have been achieved in Ge0.85Mg0.05Sb0.1Te.Finally,a Ni/Ti/Ge0.85Mg0.05Sb0.1Te thermoelectric uni-leg is fabricated and tested,showing quite good service stability even after 450 thermal cycles between 473 K and 800 K.This study will accelerate the application of GeTe-based compounds for power generation in the mid-temperature range. | Tong Xing Qingfeng Song Pengfei Qiu Qihao Zhang Xugui Xia Jincheng Liao Ruiheng Liu Hui Huang Jiong Yang Shengqiang Bai Dudi Ren Xun Shi Lidong Chen | 2019 | National Science Review2019，6，5： | 4 |
| 7 | Systems model-guided rice yield improvements based on genes controlling source, sink, and flow显示文摘A large number of genes related to source, sink,and flow have been identified after decades of research in plant genetics. Unfortunately, these genes have not been effectively utilized in modern crop breeding. This perspective paper aims to examine the reasons behind such a phenomenon and propose a strategy to resolve this situation. Specifically, we first systematically survey the currently cloned genes related to source, sink, and flow;then we discuss three factors hindering effective application of these identified genes, which include the lack of effective methods to identify limiting or critical steps in a signaling network, the misplacement of emphasis on properties, at the leaf, instead of the whole canopy level,and the non-linear complex interaction between source,sink, and flow. Finally, we propose the development of systems models of source, sink and flow, together with a detailed simulation of interactions between them and their surrounding environments, to guide effective use of the identified elements in modern rice breeding. These systems models will contribute directly to the definition of crop ideotype and also identification of critical features and parameters that limit the yield potential in current cultivars. | Pan Li Tiangen Chang Shuoqi Chang Xiang Ouyang Mingnan Qu Qingfeng Song Langtao Xiao Shitou Xia Qiyun Deng Xin-Guang Zhu | 2018 | Journal of Integrative Plant Biology2018，60，12： | 4 |
| 8 | Growth of ultra-dense MoS_(2) nanosheets on carbon fibers to improve the mechanical and tribological properties of polyimide composites显示文摘To enhance the interface bonding of polyimide(PI)/carbon fiber(CF)composites,CFs were functionalized by introducing a polydopamine(PDA)transition layer,whose active groups provide absorption sites for the growth of molybdenum disulfide(MoS_(2))nanosheets and improve the bonding strength with PI.Uniform and dense MoS_(2) nanosheets with thicknesses of 30–40 nm on the surface of the PDA@CF were obtained via a subsequent hydrothermal method.As a result,the interface between the CF and the PI matrix becomes more compact with the help of the PDA transition layer and MoS_(2) nanosheets.This is beneficial in forming PI/CF–MoS_(2) composites with better thermal stability,higher tensile strength,and enhanced tribological properties.The lubricating and reinforcing effects of the hybrid CF–MoS_(2) in the PI composite are discussed in detail.The tensile strength of the PI/CF–MoS_(2) composite increases by 43%,and the friction coefficient and the wear rate reduce by 57%and 77%,respectively,compared to those of the pure PI.These values are higher than those of the PI/CF composites without MoS_(2) nanosheets.These results indicate that the CF–MoS_(2) hybrid material can be used as an additive to improve the mechanical and tribological properties of polymers. | Jin YANG Qingfeng XIAO Zhe LIN Yong LI Xiaohua JIA Haojie SONG | 2021 | Friction2021，9，5： | 3 |
| 9 | ePlant for quantitative and predictive plant science research in the big data era --Lay the foundation for the future model guided crop breeding, engineering and agronomy显示文摘背景在着急地在最近的十年统一陆地区域基础上的庄稼产量的全球人口,气候变化和停滞的增加打电话让一条新途径支持当代的庄稼改进。ePlant 与机械学的细节的高水平是植物生长和开发的一个数学模型遇见这挑战。结果 ePlant 集成为过程发生在开发的模块急速地不同时间( 108106 秒)并且空间( 101010 米)可伸缩,合并多样的物理、生物物理、生物化学的过程包括基因规定,新陈代谢的反应,底层运输和散开,精力吸收,转移和变换,机关形态发生,植物环境相互作用,等等。单个模块用一条 divide-and-conquer 途径被开发;在不同时间、空间的规模的模块进一步通过转移 variables.We 是综合的基于信息几何学建议一个监督学习过程为两知识发现和模型扩展或进展联合模型和数据。我们最后讨论一个全球协会的最近的形成,它在植物生物学包括专家,计算机科学,统计,农学, phenomics ,等等试图由支持模型作为一个社区努力被开发而不是在哪儿的一个新模型开发范例帮助 ePlant 或它的等价物的开发和应用程序主要由单个实验室努力开车。结论 ePlant 支持量、预兆的植物科学研究的一个主要研究工具,将在未来模型起一个关键作用指导庄稼工程,繁殖并且农学。 | Yi Xiao Tiangen Chang Qingfeng Song Shuyue Wang Danny Tholen Yu Wang Changpeng xin Guangyong Zheng Honglong Zhao Xin-Guang Zhu | 2017 | Frontiers of Electrical and Electronic Engineering in China2017，5，3： | 3 |
| 10 | Design Fe-based Eutectic Medium-Entropy Alloys Fe_2NiCrNb_x显示文摘High-entropy alloys have attracted broad research interests due to their unique and intriguing mechanical properties. As a category of high-entropy alloys, eutectic high-entropy alloys combine the advantages of eutectic and high-entropy alloys, with excellent mechanical properties and casting properties. Some eutectic high-entropy alloys have been developed and shown exciting properties. In this paper, based on the physical metallurgy of eutectic high-entropy alloy, medium-entropy alloy Fe_(2)NiCrNb_(x) was designed. The as-cast alloy is composed of FCC and Laves phases, Nb element promotes the formation of primary Laves phase, and the hardness of the alloy increases with the increase in Nb element. Among the four alloys, the eutectic chemical composition at eutectic point is Fe_(2)NiCrNb_(0.34);the alloy has a good strength and plastic balance. The ultimate comprehensive strength is 2267 MPa, and the fracture strain is 30.8%. The experiment data and analyses identified the eutectic points and the excellent mechanical behavior. Moreover, the expensive Co element was replaced by Fe element. This cheap medium-entropy alloy has promising prospect in the consideration of the cost performance ratio. | Jiafen Song Zishu Chai Jian Zheng Qingfeng Wu Feng He Zenan Yang Junjie Li Jincheng Wang Haiou Yang Zhijun Wang | 2021 | Acta Metallurgica Sinica(English Letters)2021，34，8： | 2 |
| 11 | An Improved Unsupervised Image Segmentation Method Based on Multi-Objective Particle Swarm Optimization Clustering Algorithm显示文摘Most image segmentation methods based on clustering algorithms use singleobjective function to implement image segmentation.To avoid the defect,this paper proposes a new image segmentation method based on a multi-objective particle swarm optimization(PSO)clustering algorithm.This unsupervised algorithm not only offers a new similarity computing approach based on electromagnetic forces,but also obtains the proper number of clusters which is determined by scale-space theory.It is experimentally demonstrated that the applicability and effectiveness of the proposed multi-objective PSO clustering algorithm. | Zhe Liu Bao Xiang Yuqing Song Hu Lu Qingfeng Liu | 2019 | Computers, Materials & Continua2019，，2： | 2 |
| 12 | Synthesis, character- ization,and catalytic properties of hydrothermally stable macro- meso- micro- porous composite materials synthesized via in situ assembly of preformed zeolite Y nanoclusters on kaolin显示文摘 | Tan Qingfeng Bao Xiaojun Song Tengchun | 2007 | Jour- nal of Catalysis2007，251，1： | 1 |
| 13 | Resistance to ablation of pitch-derived ZrCjC composites显示文摘 | Tong Qingfeng Shi Jjingli Song Yongzhong | 2004 | Carbon2004，42，1213： | 1 |
| 14 | Stable and Highly Flexible Perovskite Solar Cells with Power Conversion Efficiency Approaching 20% by Elastic Grain Boundary Encapsulation显示文摘Here,we show that flexible perovskite solar cells(PSCs)with high operational stability and power conversion efficiency(PCE)approaching 20%were achieved by elastic grain boundary(GB)encapsulation.An introduction of trimethyltrivinylcyclotrisiloxane(V3D3)and solvent annealing(SA)resulted in an in situ cross-linking reaction between GBs and enlarged grain size that enabled oriented charge-transport properties to be achieved synchronously,leading to reduced sheet resistance with a high fill factor(FF)up to 82.93%in flexible PSCs. | Chengda Ge Ziqi Yang Xiaoting Liu Yilong Song Anran Wang Qingfeng Dong | 2021 | CCS Chemistry2021，3，7： | 1 |
| 15 | 多尺度河岸带生态系统服务供需关系映射分析显示文摘Riparian areas produce a variety of ecosystem service(ES)functions and play an important role in the coupled nature-human systems.Taking account of riparian ES in riparian greenspace planning framework and balancing the ecological and social aspects of ES can help to achieve the composite goals for urban-rural sustainability.However,there is still a lack of research on the integration thinking and quantification approach for riparian ES to support riparian greenspace planning and decision-making.This research mainly discusses the possible way of incorporating the ES into riparian greenspace planning and presents an integrated framework of the interaction between riparian ES and riparian greenspace planning,including evaluating riparian ES supply-demand budget to support multi-scales(region,urban,and street)riparian greenspace planning.Taking the Nanchuan District of Chongqing in China as a case study,we aim to achieve the following three results:first,recognizing the relationship and building a link between riparian ES and riparian greenspace planning;second,establishing a multi-scale scoring system of two ES supply-demand indicators for mapping on three spatial scales;third,applying riparian ES supply-demand mapping into riparian greenspace planning from three aspects of balancing planning goals,multi-scale planning tasks,and planning strategies and policies. | Yu Qiao Xing Zhong Zhou Qingfeng Song Yan | 2020 | China City Planning Review2020，29，4： | 1 |
| 16 | Resistance to ablation of pitch-derived ZrC/C composites显示文摘 | Tong Qingfeng Shi Jingli Song Yongzhong | 2004 | Carbon2004，42，1213： | 1 |
| 17 | Effect of Microsilica on Chemical Bond of Calcium Aluminate Cement Bonded Corundum Castable at Low and Intermediate Temperatures显示文摘Calcium aluminate cement bonded corundum castable specimens were prepared using brown fused corundum( 8- 5,5- 3,3- 1 mm),white fused corundum( ≤ 1,≤ 0. 045 mm),micro-sized α-Al_2O_3 and microsilica as starting materials. This work focused on investigating the relationship between the bond change in the castable matrix and the strength of the castable with 5 mass% microsilica or without microsilica after heat treatment at 110,800 and 1 000 ℃, respectively.Chemical bond changes between the microsilica and hydrates of calcium aluminate cement after drying at110 ℃ or firing at 800 ℃ were investigated by XPS and FTIR. The results show that Si—O—Al bonds form between the microsilica and hydrates of calcium aluminate cement after drying at 110 ℃ or firing at 800 ℃.Therefore,the increased strength of castable specimens is attributed to the formation of Si—O—Al bonds from110 ℃ to 800 ℃. | WANG Qingfeng YE Guotian LI Kunpeng SONG Xiujuan YANG Xiao | 2016 | China's Refractories2016，25，2： | 1 |
| 18 | Quantitative evaluation of emission controls on primary and secondary organic aerosol sources during Beijing 2008 Olympics 显示文摘 | GUO Song HU Min GUO Qingfeng | 2013 | Atmospheric Chemistry and Physics2013，13，16： | 1 |
| 19 | Primary Sources and Secondary Formation of Organic Aerosols in Beijing, China 显示文摘 | GUO Song HU Min GUO Qingfeng | 2012 | Environ Sci Technol2012，46，18： | 1 |
| 20 | Resistance to ablation of pitch-derived ZrC/C composites显示文摘 | Jingli Shi Yongzhong Song | 2004 | Carbon2004，42，1213： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员