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枝链有效聚集诱导型疏水缔合水凝胶的力学性能与溶胀行为 被引量:1
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作者 吕雪 刘闯 +5 位作者 王舜 王幸如 宋士新 李鹏飞 刘凤岐 孙树林 《高分子材料科学与工程》 EI CAS CSCD 北大核心 2018年第10期73-78,共6页
采用"胶束共聚"方法,设计合成一种以丙烯酰胺为亲水单体,"枝链"脂肪醇聚氧乙烯醚丙烯酸酯为疏水单体,十二烷基硫酸钠为表面活性剂共聚的疏水缔合水凝胶。其中长烷基"枝链"通过有效疏水缔合作用构筑内部... 采用"胶束共聚"方法,设计合成一种以丙烯酰胺为亲水单体,"枝链"脂肪醇聚氧乙烯醚丙烯酸酯为疏水单体,十二烷基硫酸钠为表面活性剂共聚的疏水缔合水凝胶。其中长烷基"枝链"通过有效疏水缔合作用构筑内部交联点支撑整个凝胶网络,秉承着内部微观结构制约宏观力学性能,通过微调凝胶内部有效枝链的聚集状态,最终力学性能、溶胀性能等发生一系列变化。具体为通过改变不同配比的表面活性剂和疏水单元深入考察对凝胶内部枝链诱导聚集状态、微观结构以及对拉伸性能、溶胀性能的影响。在探索中发现有趣的规律,即在有效疏水缔合作用最强、最佳时刻、表面活性剂与疏水单体的摩尔比为3,此时凝胶网络的有效聚集最紧密、结构最均匀且强度最高,其形态在水中可维持半年以上,且良好的自愈合性质将拓宽其应用领域。 展开更多
关键词 疏水缔合水凝胶 力学性能 网络结构 溶胀行为 自愈合 有效诱导
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Multicolor V_(2)O_(5)/TiO_(2)electrochromic films with fast switching and long lifespan for camouflage and information display
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作者 xingru wang Yang Zheng +4 位作者 Lirong Chen Rui Ge Chengyu Jiang Gang Xu Xiudi Xiao 《Science China Materials》 SCIE EI CAS CSCD 2024年第9期2807-2817,共11页
V_(2)O_(5),which has multicolor and energy storage properties,is a promising electrochromic material for multifunctional electrochromic devices,but its practical application is limited by its poor lifespan and long sw... V_(2)O_(5),which has multicolor and energy storage properties,is a promising electrochromic material for multifunctional electrochromic devices,but its practical application is limited by its poor lifespan and long switching time.In this work,high-performance V_(2)O_(5)/TiO_(2)films were fabricated by spraying a V_(2)O_(5)solution on in situ-grown TiO_(2)nanorods.Due to the porous structure formed between the TiO_(2)nanorods and the remarkable electron transfer performance of TiO_(2),the switching time of the V_(2)O_(5)/TiO_(2)films decreased.Moreover,the strong adhesion between the TiO_(2)nanorods and F-doped tin oxide(FTO)glass and the increased surface roughness of the substrates significantly improved the cycling stability of the V_(2)O_(5)/TiO_(2)films.With a large transmittance modulation(47.8%at 668 nm),fast response speed(τ_(c)=5.1 s,τ_(b)=4.2 s),and long lifespan,V_(2)O_(5)/TiO_(2)films were used as electrodes for the electrochromic energy storage device(EESD),which switched in six colors through color overlay:dark orange,sandy yellow,green-yellow,yellow-green,dark green,and dark brown.Inspired by pixel displays,EESDs were designed by segmenting V_(2)O_(5)films to stagger the display of the electrochromic and ion storage layers,which presented 11 types of information based on different combinations of colors.This work provides inspiration for developing multifunctional electrochromic devices,especially for camouflage and information displays. 展开更多
关键词 V_(2)O_(5)/TiO_(2)films electrochromic energy storage devices multicolor display
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Hepatectomy guided by the diseased bile duct and hepatic vein for hepatolithiasis
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作者 Jianwei Li xingru wang Shuguo Zheng 《Hepatobiliary Surgery and Nutrition》 SCIE 2024年第3期566-568,共3页
Hepatolithiasis(HL)is a common and serious disease with high incidence in Southeast Asian countries(1),especially in Southwest China,South China,and Southeast coastal areas of China.Based on the pathological character... Hepatolithiasis(HL)is a common and serious disease with high incidence in Southeast Asian countries(1),especially in Southwest China,South China,and Southeast coastal areas of China.Based on the pathological characteristics of the segmented stone distribution and atrophy of the hepatic parenchyma,resection of the atrophied liver involving the diseased bile duct is the most effective and common surgical treatment for HL.As proposed by Shindoh et al.,hepatobiliary surgeons have used anatomic liver resection(AR)for hepatocellular carcinoma(HCC),which involves complete resection of the anatomic area supplied by the portal vein of the Glissonean branch(2).However,factors such as changes in bile fluid dynamics,stone compression,and chronic inflammation associated with HL lead to portal vein and hepatic artery stenosis and occlusion in some diseased areas,resulting in the diseased bile duct and hepatic vein(HV)becoming significant characteristic anatomical structures.In such cases,the effect and success rate of indocyanine green fluorescence staining are poor for navigation during HL surgery.Digital imaging techniques such as 3D visualization,3D printing,and artificial intelligence can facilitate preoperative evaluation but not accurate evaluation of all real anatomical structures and guidance of the transection plane.In such patients with HL,the lack of effective intrahepatic anatomic landmarks used during AR results in residual stones and diseased bile ducts and recurrence of stones.This necessitates repeated surgeries and affects postoperative recovery and patients’quality of life.Therefore,to allow for standardized and more accurate hepatectomy for HL and provide a theoretical basis for formulating corresponding treatment norms,we proposed and applied hepatectomy guided by the bile duct and HV(H-BV),that is by using the diseased bile duct tree and HV as anatomic landmarks. 展开更多
关键词 Hepatolithiasis(HL) minimally invasive hepatectomy bile duct-HV space(BV space)
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Use of discarded liver in living-donor liver transplantation
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作者 xingru wang Jianwei Li Shuguo Zheng 《Hepatobiliary Surgery and Nutrition》 SCIE 2024年第4期749-751,共3页
Liver transplantation is the most effective method to save the lives of patients with acute liver failure and end-stage liver disease;however,the shortage of donor livers restricts its application and is primarily ass... Liver transplantation is the most effective method to save the lives of patients with acute liver failure and end-stage liver disease;however,the shortage of donor livers restricts its application and is primarily associated with the increase in mortality of patients waiting for liver transplantation.Li et al.’s study of 15 consecutive cases showed that partial grafts with benign lesions are safe for liver transplantation(1).A study by Li et al.showed that this method was safe and feasible for children and lean individuals(2).Some studies have explored the use of discarded partial livers in open hepatectomy for benign liver tumors,such as hemangiomas,as donor livers for living liver transplantation and can alleviate the shortage of donor livers to a certain extent(3). 展开更多
关键词 Discarded liver living-donor liver transplantation laparoscopic hepatectomy
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