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| 1 | 3D-printed models improve surgical planning for correction of severe postburn ankle contracture with an external fixator显示文摘Gradual distraction with an external fixator is a widely used treatment for severe postburn ankle contracture(SPAC).However,application of external fixators is complex,and conventional two-dimensional(2D)imaging-based surgical planning is not particularly helpful due to a lack of spatial geometry.The purpose of this study was to evaluate the surgical planning process for this procedure with patient-specific three-dimension-printed models(3DPMs).In this study,patients coming from two centers were divided into two cohorts(3DPM group vs.control group)depending on whether a 3DPM was used for preoperative surgical planning.Operation duration,improvement in metatarsal-tibial angle(MTA),range of motion(ROM),the American Orthopedic Foot and Ankle Society(AOFAS)scores,complications,and patient-reported satisfaction were compared between two groups.The 3DPM group had significantly shorter operation duration than the control group((2.0±0.3)h vs.(3.2±0.3)h,P<0.01).MTA,ROM,and AOFAS scores between the two groups showed no significant differences pre-operation,after the removal of the external fixator,or at follow-up.Plantigrade feet were achieved and gait was substantially improved in all patients at the final follow-up.Pin-tract infections occurred in two patients(one in each group)during distraction and were treated with wound care and oral antibiotics.Patients in the 3DPM group reported higher satisfaction than those in the control group,owing to better patient-surgeon communication.Surgical planning using patient-specific 3DPMs significantly reduced operation duration and increased patient satisfaction,while providing similar improvements in ankle movement and function compared to traditional surgical planning for the correction of SPAC with external fixators. | Youbai CHEN Zehao NIU Weiqian JIANG Ran TAO Yonghong LEI Lingli GUO Kexue ZHANG Wensen XIA Baoqiang SONG Luyu HUANG Qixu ZHANG Yan HAN | 2021 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2021，22，10： | 3 |
| 2 | Tungsten incorporated mobil-type eleven zeolite membranes: Facile synthesis and tuneable wettability for highly efficient separation of oil/water mixtures显示文摘Tungsten (W) incorporated mobil-type eleven (MEL) zeolite membrane (referred to as W-MEL membrane) with high separation performance was firstly explored for the separation of oil/water mixtures under the influence of gravity.W-MEL membranes were grown on stainless steel (SS) meshes through in-situ hydrothermal growth method facilitated with (3-aminopropyl)triethoxysilane (APTES) modification of stainless steel meshes,which promote the heterogeneous nucleation and crystal growth of W-MEL zeolites onto the mesh surface.W-MEL membranes were grown on different mesh size supports to investigate the effect of mesh size on the separation performance of the membrane.The assynthesized W-MEL membrane supported on 500 mesh (25μm)(W-MEL-500) exhibit the hydrophilic nature with a water contact angle of 11.8°and delivers the best hexane/water mixture separation with a water flux and separation efficiency of 46247 L·m^(-2)·h^(-1)and 99.5%,respectively.The wettability of W-MEL membranes was manipulated from hydrophilic to hydrophobic nature by chemically modifying with the fluorine-free compounds (hexadecyltrimethoxysilane (HDTMS) and dodecyltrimethoxysilane(DDTMS)) to achieve efficient oil-permselective separation of heavy oils from water.Among the hydrophobically modified W-MEL membranes,W-MEL-500-HDTMS having a water contact angle of146.4°delivers the best separation performance for dichloromethane/water mixtures with a constant oil flux and separation efficiency of 61490 L·m^(-2)·h^(-1)and 99.2%,respectively along with the stability tested up to 20 cycles.Both W-MEL-500-HDTMS and W-MEL-500-DDTMS membranes also exhibit similar separation performances for the separation of heavy oil from sea water along with a 20-fold lower corrosion rate in comparison with the bare stainless-steel mesh,indicating their excellent stability in seawater.Compared to the reported zeolite membranes for oil/water separation,the as-synthesized and hydrophobically modified W-MEL membranes shows competitive separation performances in terms of flux and separation efficiency,demonstrating the good potentiality for oil/water separation. | Hammad Saulat Jianhua Yang Tao Yan Waseem Raza Wensen Song Gaohong He | 2023 | Chinese Journal of Chemical Engineering2023，60，8： | 0 |
| 3 | Changes in photosynthesis and chlorophyll fluorescence in two soybean (Glycine max) varieties under NaCl stress显示文摘Traditional detection methods of crop information are often destructive and low efficiency.In this study,a new evaluation method was developed based on photosynthesis and chlorophyll fluorescence.Via analysis of the changes under NaCl stress during the seedling stage of two varieties,the salt resistance mechanism of soybeans was explored and a non-destructive stress-recognition method was developed.In this experiment,two soybean varieties were treated with one of four levels of NaCl stress:CK(0 mmol/L),LS(50 mmol/L),MS(100 mmol/L),and HS(150 mmol/L),for 15 d.The normal functions of the photosynthetic system of soybeans were enhanced under LS NaCl stress,but were inhibited under HS NaCl stress.Biomass,net leaf photosynthetic rate(Pn),stomatal conductance(gs),intercellular carbon dioxide concentration(Ci),transpiration rate(Tr),chlorophyll fluorescence parameters Y(II)and PSII decreased.However,in contrast to the findings of other studies on the influence of severe drought stress on soybean for long periods in which non-photochemical quenching coefficient(qN)decreased,this parameter increased under salt stress in soybean.The results demonstrate that the method developed is a promising tool for rapid and non-destructive detection of soybean photosynthetic responses under salt stress in the field. | Bin Luo Cheng Wang Xiaodong Wang Han Zhang Yanan Zhou Wensen Wang Peng Song | 2021 | International Journal of Agricultural and Biological Engineering2021，14，3： | 0 |
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