|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 扫描方式对激光金属直接成形DZ125L高温合金薄壁件开裂的影响显示文摘为了消除激光金属直接成形DZ125L高温合金薄壁件中的裂纹,研究了激光扫描方式对薄壁件(单道多层)熔覆层应力分布和开裂的影响。对比了两种扫描方式(单向扫描和往复扫描)对薄壁件的应力分布和开裂的影响。模拟和实验结果表明,单向扫描方式下薄壁件的应力分布不均匀,引起薄壁件的两端出现严重的翘曲且中间部分出现裂纹;往复扫描方式下薄壁件的应力分布相当均匀,没有出现翘曲和裂纹,熔覆层表面比较平整。 | Doan Tatkhoa 李涤尘 卢秉恒 张安峰 贺斌 Do Xuantuoi | 2012 | 中国激光2012，39，10： | 16 |
| 2 | A universal strategy for the creation of machine learning-based atomistic force fields显示文摘Emerging machine learning(ML)-based approaches provide powerful and novel tools to study a variety of physical and chemical problems.In this contribution,we outline a universal strategy to create ML-based atomistic force fields,which can be used to perform high-fidelity molecular dynamics simulations.This scheme involves(1)preparing a big reference dataset of atomic environments and forces with sufficiently low noise,e.g.,using density functional theory or higher-level methods,(2)utilizing a generalizable class of structural fingerprints for representing atomic environments,(3)optimally selecting diverse and nonredundant training datasets from the reference data,and(4)proposing various learning approaches to predict atomic forces directly(and rapidly)from atomic configurations.From the atomistic forces,accurate potential energies can then be obtained by appropriate integration along a reaction coordinate or along a molecular dynamics trajectory.Based on this strategy,we have created model ML force fields for six elemental bulk solids,including Al,Cu,Ti,W,Si,and C,and show that all of them can reach chemical accuracy.The proposed procedure is general and universal,in that it can potentially be used to generate ML force fields for any material using the same unified workflow with little human intervention.Moreover,the force fields can be systematically improved by adding new training data progressively to represent atomic environments not encountered previously. | Tran Doan Huan Rohit Batra James Chapman Sridevi Krishnan Lihua Chen Rampi Ramprasad | 2017 | npj Computational Materials2017，，1： | 10 |
| 3 | 以发酵类茶为例的基于可比性的中国茶叶出口竞争力研究显示文摘通过对中国茶叶出口竞争力已有研究的分析和梳理,总结出我国茶叶出口竞争力的比较研究,应该基于出口茶类、包装和目标市场的可比性视角。在此基础上,以中国发酵类茶为例,利用联合国商品贸易统计数据,横向比较中国与其他主要茶叶出口国不同包装发酵类茶在不同市场上的竞争力大小。结果表明,中国茶叶在出口茶类、包装上的多样化特征,决定了中国茶叶出口竞争力不仅在不同的目标市场上有所差异,即使在同一目标市场上竞争力也会随包装的不同而有所差异,中国茶叶出口整体化处理与分析确实会掩盖不同茶类在细分目标市场上竞争力的显著差异。因此,精准化识别中国出口茶叶在细分市场上的竞争力大小,对于未来推动茶叶针对性出口具有重要意义。 | 管曦 DOAN BA TOAI 何文丽 童耀南 袁婷 谢向英 | 2020 | 茶叶科学2020，40，2： | 10 |
| 4 | Behavior of noncircular tunnels excavated in stratified rock masses-Case of underground coal mines显示文摘The amount of tunnels excavated along stratified/sedimentary rock masses in Quangninh coal mine area,Vietnam, is gradually increasing. Rock mass in Quangninh is characterized by beddings between rock layers. The behavior of stratified rock masses surrounding the tunnels depends on both the intact rock and the beddings between rock layers. The main characteristics of stratified rock masses that need to be considered are their heterogeneity and anisotropy. Depending on the dip angle of rock layers, movements and failure zones developed surrounding the tunnels can be asymmetrical over the vertical axis of tunnel. This asymmetry causes adverse behaviors of the tunnel structures. The objective of this study is to highlight convergences and yielded zones developed in rock masses surrounding noncircular tunnels in Quangninh coal mine area using a finite element method. The presence of bedding joints is explicitly simulated. The numerical results indicated that with the increase in dip angle of bedding joints, the stress asymmetry over the tunnel vertical axis increases. It gradually leads to an asymmetry of the failure zone surrounding the tunnel. An increase of rock mass quality means a decrease of rock mass sensitivity to the discontinuities. In addition,a dip angle of the bedding joints of approximately 45° could be considered as the critical angle at which the rock mass mechanism changes between sliding and bending. | Ngoc Anh Do Daniel Dias Van Diep Dinh Tien Tung Tran Van Canh Dao Viet Doan Dao Phuc Nhan Nguyen | 2019 | Journal of Rock Mechanics and Geotechnical Engineering2019，11，1： | 9 |
| 5 | Transforming growth factor beta 1, a cytokine with regenerative functions显示文摘We review the biology and role of transforming growth factor beta 1(TGF-β1) in peripheral nerve injury and regeneration, as it relates to injuries to large nerve trunks(i.e., sciatic nerve, brachial plexus), which often leads to suboptimal functional recovery. Experimental studies have suggested that the reason for the lack of functional recovery resides in the lack of sufficient mature axons reaching their targets, which is a result of the loss of the growth-supportive environment provided by the Schwann cells in the distal stump of injured nerves. Using an established chronic nerve injury and delayed repair animal model that accurately mimics chronic nerve injuries in humans, we summarize our key findings as well as others to better understand the pathophysiology of poor functional recovery. We demonstrated that 6 month TGF-β1 treatment for chronic nerve injury significantly improved Schwann cell capacity to support axonal regeneration. When combined with forskolin, the effect was additive, as evidenced by a near doubling of regenerated axons proximal to the repair site. We showed that in vivo application of TGF-β1 and forskolin directly onto chronically injured nerves reactivated chronically denervated Schwann cells, induced their proliferation, and upregulated the expression of regeneration-associated proteins. The effect of TGF-β1 and forskolin on old nerve injuries is quite impressive and the treatment regiment appears to mediate a growth-supportive milieu in the injured peripheral nerves. In summary, TGF-β1 and forskolin treatment reactivates chronically denervated Schwann cells and could potentially be used to extend and prolong the regenerative responses to promote axonal regeneration. | Wale Sulaiman Doan H. Nguyen | 2016 | Neural Regeneration Research2016，11，10： | 9 |
| 6 | Effects of deformation twinning on the mechanical properties of biodegradable Zn-Mg alloys显示文摘To satisfy the property requirements for biodegradable medical implants,Zn alloyed with low levels of Mg(≤0.8 wt%)has attracted increased research interest.In the present study,deformation twinning was observed in tensile tests and twinning appears to have an adverse impact on ductility.The profuse twinning in the as-cast Zn-Mg alloys accelerated crack growth in tension due to twinning impingement which caused local stress concentrations and initiates cracking.As-rolled Zn-Mg alloys have better ductility than their as-cast counterparts due to the inhibition of twinning by the refined Mg2Zn11 intermetallic phase and the finer grain size. | Shiyang Liu Damon Kent Nghiem Doan Matthew Dargusch Gui Wang | 2019 | Bioactive Materials2019，4，1： | 5 |
| 7 | 构造应力场中巷道围岩破坏机理研究显示文摘针对构造应力场中巷道围岩变形破坏基本特征,采用FLAC3D数值计算软件,依次分析侧压系数、内摩擦角、黏聚力对矩形巷道周边应力分布、位移和塑性区扩展的影响。结果表明:侧压系数对巷道围岩变形破坏具有敏感性,随着侧压系数的增大,巷道两帮移近量呈现正比增加的趋势且明显大于顶底移近量;内摩擦角在一定的取值范围内,与巷道围岩塑性区变化存在着负相关性,但是当其增大到相对的临界点(30°≤φ≤35°)时,塑性区的变化将不再明显;当黏聚力增大到一定程度(C=5.0MPa)时,巷道围岩塑性区的变化将保持在一个相对稳定的水平。在此基础上提出高强让压支护的基本思路,开发了'多孔循环注浆,深浅孔结合'工艺,在工程实践中取得较好效果。 | 赵红超 张东升 刘洪林 吕金星 DAO VIET DOAN 温颖远 | 2014 | 煤矿开采2014，19，2： | 5 |
| 8 | Radiological Analysis of Thoracolumbar Junctional Degenerative Kyphosis in Patients with Lumbar Degenerative Kyphosis显示文摘 | Chen-Jun Liu Zhen-Qi Zhu Kai-Feng Wang Shoo Doan Shuai Xu Hai-Ying Liu | 2017 | Chinese Medical Journal2017，，21： | 3 |
| 9 | The influence of aggregation of latex particles on membrane fouling attachments&ultrafiltration performance in ultrafiltration of latex contaminated water and wastewater显示文摘The goal of the present study was to investigate the influence of latex particle aggregation on membrane fouling attachments and the ultrafiltration performance of simulated latex effluent using Cetyltrimethyl Ammonium Bromide(CTAB) as a cationic surfactant. Hydrophilic polysulfone and ultrafilic flat heterogeneous membranes, with molecular weight cut off(MWCO) of 60,000 and 100,000, respectively, as well as hydrophobic polyvinylidene difluoride with MWCO of 100,000, were used under a constant flow rate and cross-flow mode in ultrafiltration of latex solution. In addition, a polycarbonate flat membrane with uniform pore size of 0.05 μm was likewise used during the experiment. The effects of CTAB on the latex particle size distribution were investigated at various concentrations, different treatment times, and diverse agitation duration times. The effects of CTAB on the zeta potential of membrane surfaces and latex particles were also investigated. The data obtained indicate that the particle size distribution of treated latex effluent experienced significant shifts in the peaks toward a larger size range caused by the aggregation of particles. As a result, the mass of fouling contributing to pore blocking and the irreversible fouling were noticeably reduced. The optimum results occurred in the instance when CTAB was added at the critical micelle concentration of 0.36 g/L, for the duration of 10 min and with minimal agitation. Notably, a higher stirring rate had an overall negative effect on the membrane fouling minimization. | Amira Abdelrasoul Huu Doan Ali Lohi Chil-Hung Cheng | 2017 | Journal of Environmental Sciences2017，29，2： | 3 |
| 10 | Recent advances in the utilization of insects as an ingredient in aquafeeds:A review显示文摘The aquafeed industry continues to expand in response to the rapidly growing aquaculture sector.However,the identification of alternative protein sources in aquatic animal diets to replace conventional sources due to cost and sustainability issues remains a major challenge.Recently,insects have shown tremendous results as potential replacers of fishmeal in aquafeed.The present study aimed to review the utilization of insects in aquafeeds and their effects on aquatic animals’growth and feed utilization,immune response and disease resistance,and fish flesh quality and safety.While many insect species have been investigated in aquaculture,the black soldier fly(Hermetia illucens),and the mealworm(Tenebrio molitor)are the most studied and most promising insects to replace fishmeal in aquafeed.Generally,insect rearing conditions and biomass processing methods may affect the product’s nutritional composition,digestibility,shelf life and required insect inclusion level by aquatic animals.Also,insect-recommended inclusion levels for aquatic animals vary depending on the insect species used,biomass processing method,and test organism.Overall,while an appropriate inclusion level of insects in aquafeed provides several nutritional and health benefits to aquatic animals,more studies are needed to establish optimum requirements levels for different aquaculture species at different stages of development and under different culture systems. | Sahya Maulu Sandra Langi Oliver J.Hasimuna Dagoudo Missinhoun Brian P.Munganga Buumba M.Hampuwo Ndakalimwe Naftal Gabriel Mabrouk Elsabagh Hien Van Doan Zulhisyam Abdul Kari Mahmoud A.O.Dawood | 2022 | Animal Nutrition2022，，4： | 3 |
| 11 | A Neural-network-based Approach to Study the Energy-optimal Hovering Wing Kinematics of a Bionic Hawkmoth Model显示文摘This paper presents the application of an artificial neural network to develop an approach to determine and study the energy-optimal wing kinematics of a hovering bionic hawkmoth model.A three-layered artificial neural network is used for the rapid prediction of the unsteady aerodynamic force acting on the wings and the required power.When this artificial network is integrated into genetic and simplex algorithms,the running time of the optimization process is reduced considerably.The validity of this new approach is confirmed in a comparison with a conventional method using an aerodynamic model based on an extended unsteady vortex-lattice method for a sinu soidal wing kinematics problem.When studying the obtained results,it is found that actual hawkmoths do not hover under an energy-optimal condition.Instead,by tilting the stroke plane and lowering the wing positions,they can compromise and expend some energy to enhance their maneuverability and the stability of their flight. | Anh Tuan Nguyen Ngoc Doan Tran Thanh Trung Vu Thanh Dong Pham Quoc Tru Vu Jae-Hung Han | 2019 | Journal of Bionic Engineering2019，16，5： | 2 |
| 12 | A method for computing unsupported roof distance in roadway advancement and its in-situ application显示文摘A reasonable unsupported roof distance(URD) when advancing underground coal mine roadways can contribute greatly to safe and rapid roadway development.A mechanical model of the roof,using the relationship between the roof stress distribution and URD,obtained by the difference method,and roof stability according to the in-situ roof stress and rock mass strength was developed.We subsequently designed a proper range of URD,developed a testing method of URD with the function of mining protection,evaluated roof stability through analyzing the test data and then determined a reasonable URD.Considering the factors of the geological conditions,the immediate roof stability and the efficiency of the labor arrangement system,the URD of the advancing roadway of 9802 working face in Zhangshuanglou coal mine was determined to be 6 m using the proposed method.The results show that,when a 2 m length of roadway was reinforced by temporary support and high pre-stressed bolt support after the roadway advancement of 6 m per cycle,the speed and the security of the roadway development can be achieved and the advance rate can reach more than 400 m per month. | Chen Yong Bai Jianbiao Yan Shuai Hao Shengpeng Dao Viet Doan | 2016 | International Journal of Mining Science and Technology2016，26，4： | 2 |
| 13 | 关于淀粉基生物降解塑料的研究显示文摘 | Doane,WM 于波 | 1994 | 淀粉与淀粉糖1994，，1： | 2 |
| 14 | Cytokine signal transduction is suppressed in preselection double positive t hymocytes and restored by positive selection显示文摘 | Yu Q Park JH Doan LL | 2006 | Exp Med2006，203，1： | 1 |
| 15 | Insoluble Starch Xanthate: Use in Heavy Metal Removal显示文摘 | Wing W E Doane W M Russell C R | 1975 | J Appl Polym Sci1975，，19： | 1 |
| 16 | Current evidence concerning coal chlorine content and fireside corrosion in coal-fired PC and fluidized bed boilers显示文摘 | Ho K Doane E P | 2002 | Fuel and Energy Abstracts2002，43，3： | 1 |
| 17 | Mechanical and thermal properties of starch-filled poly(D,L-lactic acid)/poly(hydroxy ester ether) biodegradable blends显示文摘 | D Garlotta W Doane R Shogren | 2003 | Applied Polymer Science2003，88，： | 1 |
| 18 | Clinical,radiological and pathological features of ABCA3 mutations in children显示文摘 | Doan ML Guillerman RP Dishop MK | 2008 | Thorax2008，63，： | 1 |
| 19 | Tigecycline: a glycylcycline antimicrobial agent显示文摘 | Doan TL Fung HB Mehta D | 2006 | Clin Ther2006，28，8： | 1 |
| 20 | Effects of low molecular weight agar and Lactobacillus plan- tarum on growth performance,immunity,and disease resistance of basa fish(Pangaeius bocourti,Sauvage 1880)显示文摘 | Van Doan H Doolgindachbaporn S Suksri A | 2014 | Fish and Shellfish Immunol2014，41，2： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员