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| 1 | Pore structure of new composite adsorbent SiO2·xH2O·yCaCl2 with high uptake of water from air显示文摘A new composite adsorbent SiO2@xH2O@yCaCl2 which is composed of macro-porous silica gel and calcium chloride is introduced. In order to analyze its adsorption theory, adsorption and desorption isotherms, BET surface areas, pore volumes and average pore diameters of macro-porous silica gel and four composite adsorbent samples with different CaCl2 content are measured using SEM and Asap2010 apparatus. From the adsorption isotherms, desorption isotherms and lag loops, it can be deduced that the main pore structure in macro-porous silica gel and the new composite adsorbent have two shapes: taper with one top open and taper or hyperbolic taper with both ends open. Based on the analysis of pore diameter distribution and lag loop, a sketch map showing calcium chloride filled in pore of macro-porous silica gel is presented. The adsorption isotherms at 25℃ are measured. Experimental results show that the new composite adsorbent can adsorb more water than common adsorbents (macro-porous silica gel, micro-porous silica gel and synthetic zeolite 13X). In the light of the results of pore structure, adsorption isotherms and lyolysis phenomenon are analyzed. | LIU Yefeng (刘业凤) WANG Ruzhu (王如竹) | 2003 | Science China(Technological Sciences)2003，46，5： | 6 |
| 2 | Back propagation artificial neural network for community Alzheimer's disease screening in China显示文摘Alzheimer's disease patients diagnosed with the Chinese Classification of Mental Disorders diagnostic criteria were selected from the community through on-site sampling. Levels of macro and trace elements were measured in blood samples using an atomic absorption method, and neurotransmitters were measured using a radioimmunoassay method. SPSS 13.0 was used to establish a database, and a back propagation artificial neural network for Alzheimer's disease prediction was simulated using Clementine 12.0 software. With scores of activities of daily living, creatinine, 5-hydroxytryptamine, age, dopamine and aluminum as input variables, the results revealed that the area under the curve in our back propagation artificial neural network was 0.929 (95% confidence interval: 0.868-0.968), sensitivity was 90.00%, specificity was 95.00%, and accuracy was 92.50%. The findings indicated that the results of back propagation artificial neural network established based on the above six variables were satisfactory for screening and diagnosis of Alzheimer's disease in patients selected from the community. | Jun Tang Lei Wu Helang Huang Jiang Feng Yefeng Yuan Yueping Zhou Peng Huang Yan Xu Chao Yu | 2013 | Neural Regeneration Research2013，8，3： | 6 |
| 3 | Comparison study on strategies to prepare nanocrystalline Li2ZrO3-based absorbents for CO2 capture at high temperatures显示文摘比较研究在策略上被进行了因为为 CO2 的综合 nanocrystalline Li2ZrO3 和 Kdoped Li2ZrO3 吸收剂在高温度捕获,包括固态并且液体阶段方法,柠檬酸盐线路,和帮助淀粉的大音阶的第五音胶化方法与 freeze-drying 结合了技术。包括举起率和吸收能力,吸收性质被 thermogravimetric 分析(TGA ) 在不同 CO2 部分压力综合吸收剂调查。nanosized Li2ZrO3 晶体由柠檬酸盐线路展览综合了更快的举起并且一更高,将近, stoichiometric 吸收能力比那些综合了由固态并且液体阶段方法。做 K 进 Li2ZrO3 能显著地改进 CO2 的举起率,特别在低 CO2 部分压力。为做 K 的 Li2ZrO3 的合成,而帮助淀粉的大音阶的第五音胶化方法与 freeze-drying 结合了,柠檬酸盐线路有差的重制度和可伸缩性技术在上面可再现、容易可伸缩,并且因此综合的吸收剂拥有优秀 CO2 俘获性质。 | Qiang XIAO Xiaodan TANG Yefeng LIU Yijun ZHONG Weidong ZHU | 2013 | Frontiers of Chemical Science and Engineering2013，7，3： | 5 |
| 4 | Effect of Titanium Content on Microstructure and Wear Resistance of Hardfacing Alloy显示文摘The hardfacing alloys with different concentrations of titanium were deposited on carbon steel substrates by shielded metal arc welding, and the effect of titanium content on the microstructure characteristics of the hardfacing alloys was investigated. The wear resistance test of the hardfacing alloys was carried out by using a slurry rubber wheel abrasion test machine, and the wear behaviour was also studied. The results indicate that the addition of titanium can effectively promote the precipitation of the complex carbides of Nb and Ti due to the prior precipitation of titanium carbide which acts as nucleation sites for complex carbides. With the increase of titanium content, the wear resistance of the hardfacing alloys is increased gradually resulting from the refinement of microstructure and dispersive distribution of fine carbide precipitates. And the wear mechanism is mainly minimum plastic deformation with interrupted grooves due to the strengthening and protecting effects of carbide precipitates. | 杨可 JIANG Yongfeng BAO Yefeng | 2018 | Journal of Wuhan University of Technology(Materials Science)2018，33，3： | 5 |
| 5 | Three-dimensional time-varying sliding mode guidance law against maneuvering targets with terminal angle constraint显示文摘This paper deals with the problem of intercepting maneuvering targets with terminal angle constraints for missiles subjected to three-dimensional non-decoupling engagement geometry.To achieve the finite-time interception and satisfactory overload characteristics, a time varying sliding mode control methodology is developed based on a time base generator function. The main feature of the proposed guidance law guarantees the Line-of-Sight(LOS) angles to converge to small neighborhoods of the desired values at the interception time. First, a fractional power extended state observer is used to estimate the unknown target acceleration, which can significantly reduce the adaptive switching gain. The fractional power extended state observer enjoys the advantage of better noise tolerance. Then, a newly designed sliding mode surface is constructed by introducing a time base generator function and the time-varying sliding mode guidance law is developed based on this time-varying sliding surface. The proposed guidance law significantly reduces the overload magnitudes. Numerical simulations are carried out to verify the performance of the proposed guidance law. | Xinxin WANG Hongqian LU Xianlin HUANG Yefeng YANG Zongyu ZUO | 2022 | Chinese Journal of Aeronautics2022，35，4： | 4 |
| 6 | Hybrid brightfield and darkfield transport of intensity approach for high-throughput quantitative phase microscopy显示文摘Transport of intensity equation(TIE)is a well-established non-interferometric phase retrieval approach that enables quantitative phase imaging(QPI)by simply measuring intensity images at multiple axially displaced planes.The advantage of a TIE-based QPI system is its compatibility with partially coherent illumination,which provides speckle-free imaging with resolution beyond the coherent diffraction limit.However,TIE is generally implemented with a brightfield(BF)configuration,and the maximum achievable imaging resolution is still limited to the incoherent diffraction limit(twice the coherent diffraction limit).It is desirable that TIE-related approaches can surpass this limit and achieve high-throughput[high-resolution and wide field of view(FOV)]QPI.We propose a hybrid BF and darkfield transport of intensity(HBDTI)approach for highthroughput quantitative phase microscopy.Two through-focus intensity stacks corresponding to BF and darkfield illuminations are acquired through a low-numerical-aperture(NA)objective lens.The high-resolution and large-FOV complex amplitude(both quantitative absorption and phase distributions)can then be synthesized based on an iterative phase retrieval algorithm taking the coherence model decomposition into account.The effectiveness of the proposed method is experimentally verified by the retrieval of the USAF resolution target and different types of biological cells.The experimental results demonstrate that the half-width imaging resolution can be improved from 1230 nm to 488 nm with 2.5×expansion across a 4×FOV of 7.19 mm2,corresponding to a 6.25×increase in space-bandwidth product from∼5 to∼30.2 megapixels.In contrast to conventional TIE-based QPI methods where only BF illumination is used,the synthetic aperture process of HBDTI further incorporates darkfield illuminations to expand the accessible object frequency,thereby significantly extending the maximum available resolution from 2NA to∼5NA with a∼5×promotion of the coherent diffraction limit.Given its capability for high-throughput QPI,the proposed HBDTI approach is expected to be adopted in biomedical fields,such as personalized genomics and cancer diagnostics. | Linpeng Lu Jiaji Li Yefeng Shu Jiasong Sun Jie Zhou Edmund Y.Lam Qian Chen Chao Zuo | 2022 | Advanced Photonics2022，4，5： | 2 |
| 7 | Microstructure and Corrosion Resistance of Arc Additive Manufactured 316L Stainless Steel显示文摘The gas tungsten arc welding based additive manufacturing (GTAW-AM) was carried out by printing 316L austenitic stainless steel on carbon steel substrate with different arc currents (140,160,180 A).Microstructure and corrosion resistance of additive manufactured components were investigated.The results show that the microstructure of the GTAW-AM austenitic stainless steel is obviously changed by the arc current.With arc current increasing from 140 to 180 A,the austenite grains become coarse due to the effect of welding heat input.Meanwhile,the quantity of ferrites in the austenite matrix is decreased and the morphology transforms from lath to skeleton.Moreover,σ phases are finally formed under the arc currents of 180 A owing to high welding heat input.Therefore,as the microstructure transform into coarse-grained austenites,low-quantity ferrites and new-generated σ phases,the GTAW-AM austenitic stainless steel presents a significantly decrease in corrosion resistance.And the reduction of corrosion resistance is mainly due to the formation of σ phase as a result from consuming the large amounts of Cr element from the matrix. | 杨可 WANG Qiuyu QU Yang JIANG Yongfeng BAO Yefeng | 2020 | Journal of Wuhan University of Technology(Materials Science)2020，35，5： | 2 |
| 8 | Effects of AlCoCrFeNiTi high-entropy alloy on microstructure and mechanical properties of pure aluminum显示文摘A new kind of AlCoCrFeNiTi high-entropy alloy(HEA)as a grain refiner was prepared by vacuum arc melting.In this work,the effects of HEA(1.0 wt.%,2.0 wt.%and 3.0 wt.%)on the microstructure and mechanical properties of pure aluminum were studied.The microstructure was characterized and examined by scanning electron microscope(SEM),energy dispersive X-ray spectroscopy(EDS),X-ray diffraction(XRD),electron probe micro-analyzer(EPMA)and transmission electron microscopy(TEM)to indicate the refining abilities and mechanism of HEA on pure aluminum.Results show that the addition of HEA refined both the macrostructure and microstructure of pure aluminum.When 1.0 wt.%HEA was added,most coarse columnar grains were refined into equiaxed crystals,and as the amount of HEA increased to 2.0 wt.%and3.0 wt.%,aluminum grains were further refined,and the grain boundaries were nearly indistinguishable.Moreover,the morphology ofα-Al transformed from coarse columnar crystals to equiaxed grains,and the mean size ofα-Al grains decreased from 374μm to 27μm.The Al3Ti,Al3Ni,and nano-phase precipitated from the aluminum alloy with HEA in the solidification.The typical rod-like nano-phases distributed interdendritic regions ofα-Al.The average length of nano-phases is 2568 nm,4372 nm,and 6907 nm and the average diameter is 112 nm,103 nm,and 92 nm when 1.0 wt.%,2.0 wt.%and 3.0 wt.%HEA were added to the pure aluminum,respectively.The ultimate tensile strength(UTS)and yield strength(YS)were improved in all samples,whereas the elongation(El)was decreased with increasing HEA concentration.When 3.0 wt.%HEA was added into the aluminum melt,the UTS was improved by 145.2%from62 MPa to 152 MPa,the YS was increased by 173.8%from 42 MPa to 115 MPa,and the El was decreased by 33.3%from 39%to 26%. | Qinglin Li Shang Zhao Xuepeng Bao Yushi Zhang Yuqian Zhu Chuangzao Wang Yefeng Lan Yuxin Zhang Tiandong Xia | 2020 | Journal of Materials Science & Technology2020，52，17： | 2 |
| 9 | Impaired Autophagy in Hilar Mossy Cells of the Dentate Gyrus and Its Implication in Schizophrenia显示文摘Schizophrenia(SCZ) is a complex disease that has been regarded as a neurodevelopmental,synaptic or epigenetic disorder.Here we provide evidence that neurodegeneration is implicated in SCZ.The DTNBP1(dystrobrevin-binding protein 1) gene encodes dysbindin-1and is a leading susceptibility gene of SCZ.We previously reported that the dysbindin-1C isoform regulates the survival of the hilar glutamatergic mossy cells in the dentate gyrus,which controls the adult hippocampal neurogenesis.However,the underlying mechanism of hilar mossy cell loss in the dysbindin-1-deficient sandy(sdy) mice(a mouse model of SCZ) is unknown.In this study,we did not observe the apoptotic signals in the hilar mossy cells of the sdy mice by using the TUNEL assay and immunostaining of cleaved caspase-3or necdin,a dysbindin-1- and p53-interacting protein required for neuronal survival.However,we found that the steady-state level of LC3-Ⅱ,a marker of autophagosomes,was decreased in the hippocampal formation in the mice lacking dysbindin-1C.Furthermore,we observed a significant reduction of the cytosolic LC3-Ⅱ puncta in the mossy cells of sdy mice.In addition,overexpression of dysbindin-1C,but not 1A,in cultured cells increased LC3-Ⅱ level and the LC3 puncta in the transfected cells.These results suggest that dysbindin-1C deficiency causes impaired autophagy,which is likely implicated in the pathogenesis of SCZ. | Yefeng Yuan Hao Wang Zongbo Wei Wei Li | 2015 | Journal of Genetics and Genomics2015，42，1： | 2 |
| 10 | Surface Passivation and Energetic Modification Suppress Nonradiative Recombination in Perovskite Solar Cells显示文摘Surface passivation via post-treatment is an important strategy for improving power conversion efficiency and operational stability of perovskite solar cells.However,so far the interaction mechanisms between passivating additive and perovskite are not well understood.Here,we report the atomic-scale interaction of surface passivating additive 2,2-difluoroethylammonium bromine(2FEABr)on the MAPbI_(3).It is found that the bulky 2FEA+cations tend to distribute at film surface,while the Br−anions diffuse from surface into bulk.A combination of 19F,207Pb,and 2H solid-state NMR further reveal the Br−anions’partial substitution for the I−sites,the restricted motion of partial MA+cations,and the firmed perovskite lattices,which would improve charge transport and stability of the perovskite films.Optical spectroscopy and ultraviolet photoelectron spectroscopy demonstrate that the 2FEABr induced surface passivation and energetic modification suppress the nonradiative recombination loss.These findings enable the efficiency of the p-i-n structured PSC significantly increasing from 19.44 to 21.06%,accompanied by excellent stability.Our work further establishes more knowledge link between passivating additive and PSC performance. | Wei Dong Wencheng Qiao Shaobing Xiong Jianming Yang Xuelu Wang Liming Ding Yefeng Yao Qinye Bao | 2022 | Nano-Micro Letters2022，14，7： | 2 |
| 11 | Neuroprotective effect of the traditional Chinese herbal formula Tongxinluo: a PET imaging study in rats显示文摘Tongxinluo has been widely used in China for the treatment of acute stroke and for neuroprotection. However, there are few positron emission tomography(PET) studies on the neuroprotective effect of Tongxinluo on cerebral ischemia/reperfusion in small animals. In the present study, Tongxinluo superfine powder suspension or its vehicle was administered intragastrically to rats for 5 successive days before middle cerebral artery occlusion. 18F-fluorodeoxyglucose(FDG) small animal PET imaging showed that at 1 and 2 weeks after cerebral ischemia/reperfusion, glucose metabolism in the ischemic area was greater in rats that had received Tongxinluo than in those that had received the vehicle. Nissl staining showed that 2 weeks after cerebral ischemia/reperfusion, there was less neuronal loss in the prefrontal cortex in Tongxinluo-treated rats than in controls. In addition, Tongxinluo-treated animals showed better neurologic function and lower cerebral infarct volume than rats that received the vehicle. These findings suggest that Tongxinluo exhibits neuroprotective effects in cerebral ischemia/reperfusion injury and demonstrates that 18F-FDG small animal PET imaging is a useful tool with which to study the molecular pharmacology of traditional Chinese medicine. | Xiao Cheng Haoxuan Luo Lihua Zhou Lixin Wang Jingbo Sun Yan Huang Enli Luo Yefeng Cai | 2014 | Neural Regeneration Research2014，9，13： | 2 |
| 12 | Review on Additive Manufacturing of Single-Crystal Nickel-based Superalloys显示文摘The conventional fabrication process for single-crystal nickel-based superalloy materials is directional solidifica-tion,which is classified as casting.With the rapid development of additive manufacturing(AM)technologies,a novel process for fabricating single-crystal superalloys has become possible.This article reviews recent research on the AM of single-crystal nickel-based superalloys.Laser AM technologies,particularly directed energy deposition,are mainly used to repair single-crystal materials.Electron beam powder bed fusion is an innovative method for the direct fabrication of single-crystal materials.Accordingly,the mechanisms of single-crystal formation during AM are analyzed to elucidate the potential of this process route.Furthermore,this article discusses the challenges faced by AM for single-crystal fabrication,and provides perspectives on the trends of future developments. | Yang Li Xiaoyu Liang Yefeng Yu Dongfang Wang Feng Lin | 2022 | Chinese Journal of Mechanical Engineering(Additive Manufacturing Frontiers)2022，1，1： | 2 |
| 13 | Unprecedented high- modulus high-strength tapes and films of ultrahigh molecular weight polyethylene via solvent-free route显示文摘 | Rastogi S Yao Yefeng Ronca S | 2011 | Macromolecules2011，44，14： | 1 |
| 14 | High-temperature Tensile Behavior of Laser Welded Ti-22Al-25Nb Joints at Different Temperatures显示文摘The high-temperature tensile behavior of laser welded Ti-22Al-25Nb (at%) joints was investigated at 500,650,800,and 1 000 ℃.The temperatures for tensile tests were selected according to the phase transformation sequence of Ti2AlNb-based alloys.At temperatures lower than the B2+O phase field (500 ℃) and higher than the B2+O phase field (1 000 ℃),the joints fracture in the base metal in ductile fracture mode.By contrast,the joints exhibit obvious high-temperature brittleness in the B2+O phase field (650 °C and 800 ℃).Heat treatments were conducted with respect to the thermal history of tensile specimens.Intergranular microcracks along the grain boundary of B2 phase are found in the fusion zone after the heat treatments at 650 ℃ and 800 ℃.The high-temperature brittleness at 650 ℃ and 800 ℃ is attributed to the B2→O transformation along the grain boundary.The stress concentration caused by the volume change of B2→O transformation also contributes to the high-temperature brittleness of laser welded Ti-22Al-25Nb joints. | 张可召 雷正龙 CHEN Yanbin YAN Chunyan FU Qiang BAO Yefeng | 2020 | Journal of Wuhan University of Technology(Materials Science)2020，35，6： | 1 |
| 15 | Gas lubrication analy- sis method of step-dimpled face mechanical seals 显示文摘 | Bai Shaoxian Peng Xudong Li Yefeng | 2012 | ASME J Tribo12012，134，01： | 1 |
| 16 | Sliding wear behaviour of plasma electrolytic oxidation coating on pure aluminium显示文摘 | Yongfeng Jiang Yingyue Zhang Yefeng Bao Ke Yang | 2011 | Wear2011，，9： | 1 |
| 17 | Effect of rare earth cerium addition on the microstructure and tensile properties of hypereutectic Al-20% Si alloy显示文摘 | Li Qinglin Xia Tiandong Lan Yefeng | | 0，，： | 1 |
| 18 | Avian influenza virus and Newcastle disease virus (NDV) surveillance in commercial breeding farm in China and the characterization of Class I NDV isolates 显示文摘 | HU Beixia HUANG Yanyan HE Yefeng | 2010 | Vet Microbiol2010，144，12： | 1 |
| 19 | Hexagon and stripe patterns in dielectric barrier streamer discharge显示文摘 | DONG Lifang HE Yefeng YIN Zengqian | 2004 | Plasma Sources Sci Technol2004，13，： | 1 |
| 20 | Square superlattice pattern in dielectric barrier discharge显示文摘 | DONG Lifang LIU Weili HE Yefeng | 2006 | Phys Rev E2006，73，06： | 1 |
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