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Improving sampling depth of laser speckle imaging by topical optical clearing:A theoretical and in vivo study

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Journal of Innovative Optical Health Sciences 2020年第2期13卷 33-43页

作者： d.li Y.Zhang B.Chen State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an Shaanxi 710049P.R.China

The effect of optical cleaning method combined with laser speckle imaging(LSI)was discussed to improve the detection depth of LSI due to high scattering characteristics of skin,which limit its clinical application.A double-layer skin tissue model embedded with a single blood vessel was established,and the Monte Carlo method was used to simulate photon propagation under the action of light-permeating agent.808 nm semiconductor and 632.8 nm He–Ne lasers were selected to study the e®ect of optical clearing agents(OCAs)on photon deposition in *** show that the photon energy deposition density in the epidermis increases with the amount of tissue°uid replaced by *** with glucose solution,polyethylene glycol 400(PEG 400)and glycerol can considerably increase the average penetration depth of photons in the skin tissue,thereby raising the sampling depth of the *** the action of glycerol,PEG 400,and glucose,the average photon penetration depth is increased by 51.78%,51.06%,and 21.51%for 808nm,68.93%,67.94%,and 26.67%for 632.8 nm lasers,*** vivo experiment by dorsal skin chamber proves that glycerol can cause a substantial decrease in blood°ow rate,whereas PEG 400 can signicantly improve the capability of light penetration without a®ecting blood velocity,which exhibits considerable potential in the monitoring of blood°ow in skin tissues.

关键词： Laser speckle image topical optical clearing imaging depth Monte-Carlo simulation dorsal skin experiment

dynamic simulation based method for the reduction of complexity in design and control of Recirculating Aquaculture Systems

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Information Processing in Agriculture 2016年第3期3卷 146-156页

作者： M.Varga S.Balogh Y.Wei d.li B.Csukas Kaposvar University Department of Information TechnologyResearch Group on Process Network Engineering40 Guba S7400 KaposvarHungary China Agricultural University 17 Tsinghua East RoadBeijing 100083China

In this work we introduce the“Extensible Fish-tank Volume Model”that can reduce the complexity in the design and control of the Recirculating Aquaculture *** the developed model we adjust the volume of a single fish-tank to the prescribed values of stocking density,by controlling the necessary volume in each time *** developed an advantageous feeding,water exchange and oxygen supply strategy,as well as considering a compromise sched.ling for the fingerling input and product fish output,we divide the volume *** function into equidistant parts and calculate the average volumes for these *** these average values with the volumes of available tanks,we can plan the appropriate *** elaborated method is a good example for a case,where computational mod.ling is used to simulate a‘‘fictitious process model”that cannot be feasibly realized in the practice,but can simplify and accelerate the design and planning of real world processes by reducing the complexity.

关键词： Recirculating Aquaculture Systems Complexity reduction dynamic simulation Model controller direct Computer Mapping

New ductile laminate structure of Ti-alloy/Ti-based metallic glass composite with high specific strength

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Journal of Materials Science & Technology 2018年第4期34卷 708-712页

作者： d.li Z.W.Zhu A.M.Wang H.M.Fu H.li H.W.Zhang H.F.Zhang Shenyang National Laboratory for Materials Science Institute of Metal Research Chinese Academy of Sciences

Bulk laminate structure of Ti-alloy/Ti-based metallic glass composite （MGC） was prepared by melting a preform of alternate stack-up foils in the high vacuum atmosphere. The composite demonstrates a good combination of yield strength （-1618MPa）, plasticity （-4.3%） and specific fracture strength （384 × 10^3 N m kg^-1 ） in compression. The maintained yield strength results from the unique microstruc- ture composed of the Ti layer, the solution layer with gradient structure and the MGC layer. Such a multilayer structure effectively inhibits the propagation of shear band, leading to the enhanced plastic- ity. Those extraordinary properities suggest that combining ductile lamella with brittle metallic glass （MG） by such a lay-up method can be an effective way to improve mechanical properties of MG.

关键词： Laminate composite Metallic glass Specific strength Plasticity

ON THE BURN RESISTANCE OF Ti-35V-15Cr-0.05C TITANIUM ALLOY

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Acta Metallurgica Sinica(English Letters) 1998年第3期11卷 202-206页

作者： G.P.li d.li Y.Y.liu Q.J.Wang S.X.Guan Q.C.li Inst of Metal Research The Chinese Acad of Sciences Shenyang China

The Ti-35V-15Cr-0.05C (wt% is a new nonburning titanium alloy. The test for alloy combustibility was carried out by using CO2 laser. A 430 watt and 6mm diameter laser spot impinges directly on the sample within normal atmospheric pressure and temperature. The results show that the ignition time of the nonburning titanium alloy is the longest in the eight examined titanium alloys, and is 3.5 times that of TC4 alloy. The ignition tempeerature of the nonburning alloy is 2991° C, and is higher than that of TC4 alloy by 1976°C. On the condition of high tempeerature and rich oxygen,the surface of alloy forms a melting layer which plays roles of oxygen insulation, heat insulation and burning products insulation. This is the mechanism of combustion resistance.

关键词： Ti-35V-15Cr-0.05C (wt%) nonburning titanium alloy combustion resistance

NUCLEATION OF RARE EARTH-RICH PHASE PARTICLES IN Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nd ALLOY

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Acta Metallurgica Sinica(English Letters) 1998年第4期11卷 265-269页

作者： G.P.li d.li and Y. Y. liu (department of Titanium Alloys, Institute of Metal Research, The Chinese Academy of Sciences, Shenyang 110015, China) Inst of Metal Research The Chinese Acad of Sciences Shenyang China

High resolution electron microscopy studies of rure earth-rich phase particles in a melt-quenched Ti-5Al-4Sn-2Zr-1MO-0.25Si-1Nd alloy indicate that the α-Ti matrix crystallizes prior to the rare earth-rich phase particles. According to a new nucleation model, the heteropeneous nucleation of the rare earth-rich phase particles at the matrix interface is easier than the homogeneous nucleation off the interface matrix, which is consistent with the results of the HREM obseroations.

关键词： Ti alloy rure earth rich phase nucleation

Why do Governments dump State Enterprises?Evidence from China

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Why Do Governments Dump State Enterprises?Evidence from Chin...

Nd-RICH PHASE PARTICLES IN AS-FORGEd Ti-5Al-4Sn-2Zr-1Mo-0.25Si-1Nd ALLOY

作者： david d.li

Why do governments choose to dump state enterprises by privatization or liquidation? Existing research on privatization has not paid much attention to this *** paper focuses on testing two alternative theories of the *** theory explains that governments privatize or liquidate state enterprise in order to enhance *** other theory explains that increasing government revenue or stopping subsidies to profit-losing state enterprises is the *** tests based on a data set from China reject the efficiency theory and yield support for the revenue *** addition,we find evidence that the concerns for unemployment and for losing political benefit of control to the government are important obstacles of privatization or liquidation decisions.A simple implication is that it might be sensible to propose second-best privatization or liquidation programs that take government objectives into account and are feasible with the government rather than first-best programs that will not be implemented.

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Acta Metallurgica Sinica(English Letters) 1998年第4期11卷 261-264页

作者： G.P.li d.li Y.Y.liu S.X. Guan and Q.J.Wang (department of Titanium Alloys, Institute of Metal Research, The Chinese Academy of Sciences, Shenyang 110015, China) Inst of Metal Research Chinese Acad of Sciences Shenyang China

TEM examination proves that the second phase particle within the as-forged Ti-55alloy consists of either bright or dark 'matrix' (nano-Nd3Sn) and some small dark blocks (SnO) dispersed in the 'matrix'. The HREM observation shows that the nanoNd3Sn phase is roughly spherical and about 3-15nm in diameter, and the grain boundaries with atout 1nm width are 'gas-like' structure.

关键词： Ti alloy Nd-rich phase electron microscopy

Quantized Conductance of Majorana Zero Mode in the Vortex of the Topological Superconductor(li_(0.84)Fe_(0.16))OHFeSe

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Chinese Physics Letters 2019年第5期36卷 90-97页

作者： C.Chen Q.liu T.Z.Zhang d.li P.P.Shen X.L.dong Z.-X.Zhao T.Zhang d.L.Feng State Key Laboratory of Surface Physics and department of Physics Fudan UniversityShanghai 200433 Collaborative Innovation Center of Advanced Microstructures Nanjing 210093 Science and Technology on Surface Physics and Chemistry Laboratory Mianyang 621908 National Laboratory of Superconductivity Institute of PhysicsChinese Academy of SciencesBeijing 100190 Hefei National Laboratory for Physical Science at Microscale CAS Center for Excellence in Quantum Information and Quantum Physicsand Department of PhysicsUniversity of Science and Technology of ChinaHefei 230026

The Major ana zero mode(MZM), which manifests as an exotic neutral excitation in superconductors, is the building block of topological quantum computing. It has recently been found in the vortices of several iron-based superconductors as a zero-bias conductance peak in tunneling spectroscopy. In particular, a clean and robust MZM has been observed in the cores of free vortices in(li_(0.84)Fe_(0.16))OHFeSe. Here using scanning tunneling spectroscopy, we demonstrate that Major ana-induced resonant Andreev reflection occurs between the STM tip and this zero-bias bound state,and consequently, the conductance at zero bias is quantized as 2e^2/h. Our results present a hallmark signature of the MZM in the vortex of an intrinsic topological superconductor, together with its intriguing behavior.

关键词： OHFeSe Quantized Conductance of Majorana Zero Mode in the Vortex of the Topological Superconductor MZM li STM Fe

pH-dependent Photo-induced Release Reaction of Benzophenone derivative:3-（1-hydroxypropan-2-yl）benzophenone

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pH-dependent Photo-induced Release Reaction of Benzophenone ...