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| 1 | Bioinspired Ultra-Low Adhesive Energy Interface for Continuous 3D Printing: Reducing Curing Induced Adhesion显示文摘Additive manufacturing based on liquid resin curing is one of the most promising methods to construct delicate structures.However,precision and speed are limited by the vertical adhesion of in situ cured resin at the curing interface.To overcome the unavoidable adhesion and to develop a general curing interface,we propose a slippery surface taking inspiration of the peristome surface of the pitcher plant.Such surface shows ultra-low adhesive energy at the curing interface due to the inhibition of the direct contact between the cured resin and the solid surface,which also increases the reflling speed of liquid resin.Tis ultra-low adhesive energy interface is efective for continuous 3D printing and provides insights into the physical mechanisms in reducing vertical solid-solid interfacial adhesion. | L.Wu ZDong H.Du CLi N.X.Fang Y.Song | 2018 | Research2018,,1: | 11 |
| 2 | Role of bile acids in the regulation of the metabolic pathways显示文摘Recent studies have revealed that bile acids(BAs)are not only facilitators of dietary lipid absorption but also important signaling molecules exerting multiple physiological functions.Some major signaling pathways involving the nuclear BAs receptor farnesoid X receptor and the G protein-coupled BAs receptor TGR5/M-BAR have been identified to be the targets of BAs.BAs regulate their own homeostasis via signaling pathways.BAs also affect diverse metabolic pathways including glucose metabolism,lipid metabolism and energy expenditure.This paper suggests the mechanism of controlling metabolism via BA signaling and demonstrates that BA signaling is an attractive therapeutic target of the metabolic syndrome. | Hiroki Taoka Yoko Yokoyama Kohkichi Morimoto Naho Kitamura Tatsuya Tanigaki Yoko Takashina Kazuo Tsubota Mitsuhiro Watanabe | 2016 | World Journal of Diabetes2016,7,13: | 11 |
| 3 | 环氧树脂648和TDE-85的质子辐照损伤效应研究显示文摘通过地面模拟空间环境质子辐照条件(质子能量Ep=150keV,束流密度A=2.0×1012cm-2·s-1,辐照剂量范围Φ=(0~5.0)×1016cm-2;真空度10-6Pa,环境温度120K),研究了不同辐照剂量下环氧树脂浇注体648和TDE-85的质量损失、弯曲强度和表面粗糙度的变化。试验结果表明,随着辐照剂量的增加,质量损失呈现先加速递增后趋于平缓的趋势;648的弯曲强度呈单边下降趋势,TDE-85的弯曲强度呈现先上升后下降的趋势,树脂表面产生了碳化效应,表面粗糙度发生了不同程度的变化。 | 姜利祥 盛磊 陈平 何世禹 | 2006 | 航天器环境工程2006,23,3: | 10 |
| 4 | 溶剂萃取法提取蓝莓中花色苷显示文摘1引言蓝莓(Blueberry),又称越橘、蓝浆果,属杜鹃花科(Ericaceae)越橘属(Vaccinium spp)多年生落叶或常绿灌木。蓝莓果实呈深蓝色,含有丰富的花色苷。花色苷是花色素与糖以糖苷键结合而成的黄酮多酚类化合物,结构性质稳定,花色素的基本结构为3,5,7-三羟基-2-苯基苯并吡喃,由于苯环中取代基、羟基和甲氧基位置和数量不同, | 王继萍 柏广新 李劲然 王叶宝 冷吉燕 秦俊杰 | 2012 | 分析化学2012,40,12: | 9 |
| 5 | Use of polymeric sub-micron ion-exchange resins for removal of lead,copper,zinc,and nickel from natural waters显示文摘This research investigated the removal capacity of polymeric sub-micron ion-exchange resins(SMR) for removal of lead, copper, zinc, and nickel from natural waters in competition with natural organic matter(NOM). Polymeric SMR particles were created and tested to ensure that they were adequately dispersed in the solution. They removed little NOM(10%or less) from river water and wastewater, indicating that competition from NOM was not a major concern. SMR were able to remove 82% ± 0.2% of lead, 46% ± 0.6% of copper, 55% ±20% of zinc, and 17% ± 2% of nickel from river water spiked with 500 μg/L of each. Similarly,in wastewater, they were able to remove 86% ± 0.1% of lead, 38% ± 0.8% of copper, 28% ± 1%of zinc, and 11% ± 1% of nickel. | Audrey Murray Banu ?rmeci | 2019 | Journal of Environmental Sciences2019,31,1: | 9 |
| 6 | SPECIAL EFFECT OF ULTRA-FINE RUBBER PARTICLES ON PLASTIC TOUGHENING显示文摘According to the present theories of plastic toughening, it is impossible to enhance the toughness, stiffness and/or heat resistance of plastics simultaneously by using rubber. A series of novel nano-rubber particles (UFPR) were introduced, which were prepared through irradiating common rubber lattices and spray drying them. Epoxies toughened with UFPR showed a much better toughening effect than those with CTBN, and the heat resistance of epoxy was unexpectedly elevated. For polypropylene toughening, UFPR can improve the toughness, stiffness and heat resistance of PP simultaneously. These special toughening effects overcome the deficiencies in rubber toughening technology and are worth further investigating. | 乔金樑 | 2002 | Chinese Journal of Polymer Science2002,20,2: | 7 |
| 7 | Fundamental principles of an effective reinforcing roof bolting strategy in horizontally layered roof strata and areas of potential improvement显示文摘It is arguable that the development of reinforcing roof bolting systems has largely stagnated in recent times, primarily due to the prevailing industry view that few, if any, further improvements can be made to what currently exists.However, this paper contends that reinforcing roof bolting systems can be further refined by considering both the specific manner by which horizontally bedded roof strata loses its natural self-supporting ability and the specific means by which reinforcing roof bolts act to promote or retain this natural self-supporting ability.The Australian coal industry has insisted on minimising bolt-hole diameter to maximise load transfer and on targeting full-encapsulation by any means necessary for many years.This has led to a significant, albeit unintended, consequence in terms of overall roof bolting effectiveness, namely increased resin pressures during bolt installation and the associated potential for opening bedding planes that may have, otherwise, remained closed during the bolt installation process.Given that the natural self-supporting ability of roof strata is strongly linked to whether bedding planes are open or closed, logically, minimising resin pressures should be a significant benefit.This paper focuses primarily on three key issues that relate directly to the function of the roof bolting system itself:(1) the importance of proper resin mixing in the context of maximising load transfer strength and stiffness,(2) the importance of minimising resin pressures developed during bolt installation, and(3) the importance of maximising the effectiveness of the available bolt pre-tension.All mine operators should be invested in improving the individual effectiveness of each installed roof bolt, even by relatively small incremental amounts, so this is an important topic for discussion within the mining community. | Russell Frith Guy Reed Martin McKinnon | 2018 | International Journal of Mining Science and Technology2018,28,1: | 7 |
| 8 | Mechanism and kinetics study on removal of Iron from phosphoric acid by cation exchange resin显示文摘Iron element is one of the main impurities in wet-process phosphoric acid and it has a significant impact on the subsequent phosphorus chemical products. This paper studied the feasibility of using Sinco-430 cation exchange resin for iron removal from phosphoric acid. The specific surface area and the total exchange capacity of resin were 8.91 m2·g-1 and 5.18 mmol·g-1, respectively. The sorption mechanism was determined by FTIR and XPS and the results indicated that iron was combined with-SO3 H in resin. The removal process was studied as a function of temperature, H3 PO4 content and mass ratio between resin and solution. The unit mass of resin to remove iron was 0.058 g·g-1 resin when the operating parameters were T = 50 ℃, H3 PO4 content = 27.61 wt%and S/L = 0.1, respectively. Kinetics study demonstrated that pseudo-second-order reaction model fits this study best and the calculated activation energy of overall reaction is 29.10 kJ·mol-1. The overall reaction process was mainly controlled by pore diffusion. | Xinke Leng Yanjun Zhong Dehua Xu Xinlong Wang Lin Yang | 2019 | Chinese Journal of Chemical Engineering2019,27,5: | 7 |
| 9 | Adsorption and desorption properties of D151 resin for Ce(Ⅲ)显示文摘The present research is aimed at the development of D151 resin as an adsorbent that it can be used in the adsorption of Ce(Ⅲ) ions.The adsorption and desorption behaviors of Ce(Ⅲ) on D151 resin have been investigated by chemistry analysis.The influence of operational conditions such as contact time,initial concentration of Ce(Ⅲ),initial pH of solution and temperature on the adsorption of Ce(Ⅲ) had also been examined.The results show that the optimal adsorption condition of D151 for Ce(Ⅲ) was achieved at pH=6.50 in HAc-NaAc medium.The maximum uptake capacity of Ce(Ⅲ) was 392 mg/g resin at 298 K.The adsorption of Ce(Ⅲ) followed both the Langmuir isotherm and Freundlich isotherm,and the correlation coefficients had been evaluated.Even kinetics on the adsorption of Ce(Ⅲ) had been studied.The adsorption rate constant k298 K valued was 1.3×10-5 s-1.The calculation data of thermodynamic parameters which ΔS0 value of 91.34 and ΔH0 value of 7.07 kJ/mol indicate the endothermic nature of the adsorption process.While,a decrease of Gibb's free energy(ΔG0) with increasing temperature indicated the spontaneous nature of the adsorption process.Finally,Ce(Ⅲ) could be eluted by using 0.5 mol/L HCl solution and the elution percentage was as high as 100%.Adsorption mechanism was also proposed for the adsorption of Ce(Ⅲ) ions onto D151 resin using infrared spectroscopy technique. | 姚彩萍 | 2010 | Journal of Rare Earths2010,28,S1: | 6 |
| 10 | PREPARATION OF WATERBORNE ULTRAFINE PARTICLES OF EPOXY RESIN BY PHASE INVERSION TECHNIQUE显示文摘Werborne ultrafine particles of epoxy resin were prepared by phase inversion tech-nique. The results of SEM revealed that the particles diameter was in the range of 50to 100 nm and the effects on amount of water required at phase inversion point were alsodisc?d. | 杨振忠 许元泽:王胜杰 俞浩 蔡维真 | 1997 | Chinese Journal of Polymer Science1997,15,1: | 6 |
| 11 | Evaluation of D113 cation exchange resin for the removal of Eu(Ⅲ) from aqueous solution显示文摘Batch adsorption experiments were conducted for the adsorption of Eu(Ⅲ) ions from aqueous solution by D113 resin. The results indicated that D113 resin could adsorb Eu(Ⅲ) ion effectively from aqueous solution. The adsorption was strongly dependent on pH of the medium with enhanced adsorption as the pH turned from 3.50 to 7.00 and the optimal adsorption condition was in HAc-NaAc medium with pH value of 6.50. The maximum uptake capacity of Eu(Ⅲ) ions was 290.9 mg/g D113 at 298 K, at an initial pH value of 6.50. The overall adsorption process was best described by Lagergren-first-order kinetics. When Freundlich and Langmuir isotherms were tested, the latter had a better fit with the experimental data. The thermodynamic parameters such as free energy (G) which were all negative, indicated that the adsorption of Eu(Ⅲ) ions onto D113 resin was spontaneous and the positive value of enthalpy (H) showed that the adsorption was endothermic in nature. Thomas model was applied to experimental column data to determine the characteristic parameters of column useful for process design. Furthermore, Eu(Ⅲ) could be eluted by using 3.0 mol/L HCl solution and the D113 resin could be regenerated and reused. | 熊春华 郑展望 | 2010 | Journal of Rare Earths2010,28,6: | 6 |
| 12 | Adsorption/desorption of toluene on a hypercrosslinked polymeric resin in a highly humid gas stream显示文摘In many sources of volatile organic compounds (VOCs), large amounts of water vapor come from the air and the reactors. The relative humidity (RH) of exhaust gas is normally >60% and is supersaturated. Maintaining the property of adsorbent on VOCs in a highly humid gas stream is a serious industrial problem. In this study, the adsorption/desorption behavior of toluene in a micro-mesoporous polymeric resin was investigated in a highly humid environment to explore the influence of abound water vapor on resin adsorption and regeneration. This resin could selectively adsorb toluene at an RH of 80%, and its adsorption property was unaffected by the presence of water vapor. In the case of humidity saturation, the resin displayed a high adsorption capacity at a moisture content of <30%. Therefore, the polymer resin is an excellent water-resistant adsorbent of VOCs. In the regenerative experiment, the resin maintained its original adsorption capability after four adsorption/ desorption cycles of toluene purging with nitrogen gas at 120℃. The resin exhibited excellent regeneration performance at high humidity. | Bing Zhou Bin Sun Wenjuan Qiu Ying Zhou Junqian He Xiao'ai Lu Hanfeng Lu | 2019 | Chinese Journal of Chemical Engineering2019,27,4: | 6 |
| 13 | Novel Ag nanocrystals based dental resin composites with enhanced mechanical and antibacterial properties显示文摘The aim of this work was to investigate the effect of trace addition of oleic acid coated Ag nanocrystals(Ag NCs) on mechanical and antibacterial properties of dental resin composites.Composites(70 wt%of silica loading) with 25 ppm,50 ppm,75 ppm and 100 ppm(wt) Ag NCs were prepared and the composite without Ag NCs served as a control.The experimental results showed that the addition of Ag NCs significantly improved the strength and modulus of the resin composite without compromising the shade.For the composite with 50 ppm Ag NCs,fiexural strength(140.3 MPa),modulus(13.2 GPa)and compressive strength(347.2 MPa) were increased by 4.1%,22.2%,13.3%,respectively,compared with the control.The antibacterial test demonstrated that trace Ag NCs provided the resin composites with an antibacterial effect.Such strong and antibacterial dental resin composites might be advantageous to prevent secondary caries and be potential for future clinical applications. | Fengwei Liu Ruili Wang Yuyuan Shi Xiaoze Jiang Bin Sun Meifang Zhu | 2013 | Progress in Natural Science:Materials International2013,23,6: | 5 |
| 14 | 5284树脂流变特性研究显示文摘研究了Resin Transfer Molding(RTM)专用5284树脂体系的流变特性,并根据阿累尼乌斯方程建立了5284树脂体系的化学流变模型,有效预测了该树脂体系在不同工艺下的粘度行为,揭示了树脂体系的优化工艺参数和低粘度平台工艺窗口,为RTM的顺利实施及工艺参数的准确制定奠定了科学依据. | 崔郁 李晔 唐邦铭 | 2009 | 南京大学学报(自然科学版)2009,45,2: | 5 |
| 15 | Preparation and characterization of hexadecane microcapsule with polyurea-melamine formaldehyde resin shell materials显示文摘This paper gives a brief report of the preparation of hexadecane microcapsule with polyurea-melamine formaldehyde resin shell materials(HMPM).The sealing performance and thermal stability of HMPM was enhanced much more effectively than that of microcapsule with polyurea shell material(HPM).The results of microscopical imaging analysis system,DSC,TG,and laser particle analyzer were briefly introduced. | Gao, Gui Bo Qian, Chun Xiang Gao, Min Jie | 2010 | Chinese Chemical Letters2010,21,5: | 5 |
| 16 | Resin infiltration of deproteinised natural occlusal subsurface lesions improves initial quality of fissure sealing显示文摘The aim of this ex vivo study was to evaluate the infiltration capability and rate of microleakage of a low-viscous resin infiltrant combined with a flowable composite resin(RI/CR) when used with deproteinised and etched occlusal subsurface lesions(International Caries Detection and Assessment System code 2). This combined treatment procedure was compared with the exclusive use of flowable composite resin(CR) for fissure sealing. Twenty premolars and 20 molars revealing non-cavitated occlusal carious lesions were randomly divided into two groups and were meticulously cleaned and deproteinised using Na OCl(2%). After etching with HCl(15%), 10 premolar and 10 molar lesions were infiltrated(Icon/DMG; rhodamine B isothiocyanate(RITC)-labelled) followed by fissure sealing(G-?nial Flo/GC; experimental group, RI/CR). In the control group(CR), the carious fissures were only sealed. Specimens were cut perpendicular to the occlusal surface and through the area of the highest demineralisation(DIAGNOdent pen, Ka Vo). Using confocal laser-scanning microscopy, the specimens were assessed with regard to the percentage of caries infiltration, marginal adaption and internal integrity. Within the CR group, the carious lesions were not infiltrated. Both premolar(57.9% ± 23.1%) and molar lesions(35.3% ± 22.1%) of the RI/CR group were uniformly infiltrated to a substantial extent, albeit with significant differences(P = 0.034). Moreover, microleakage(n = 1) and the occurrence of voids(n = 2) were reduced in the RI/CR group compared with the CR group(5 and 17 specimens,respectively). The RI/CR approach increases the initial quality of fissure sealing and is recommended for the clinical control of occlusal caries. | Andrej M Kielbassa Ina Ulrich Rita Schmidl Christoph Schuller Wilhelm Frank Vanessa D Werth | 2017 | International Journal of Oral Science2017,9,2: | 4 |
| 17 | Study on the diffusion kinetics of adsorption of heavy rare earth with Cyanex272-P507 impregnated resin显示文摘Kinetics of adsorption of heavy rare earth with Cyanex272-P507 impregn ated resin was studied. The influences of temperature,concentration,granularit y of resin on the exchange degree were investigated by the limited bath method. The result showed that the controlling factor of RE3+/H+ diffusion on Cyanex272-P507 extraction resin was particles diffusion. The process of diffuse kinetics f itted well with the expression developed by Body model. The apparent activation energy was determined as 23.20 kJ/mol. The reaction order was 0.452. In addition,the constant of particles diffusion(D0) was 1.352×10-8 m2/S and the entropy of diffusion was-47.055 J/(mol·K). | 廖春发 聂华平 焦云芬 梁勇 杨少华 | 2010 | Journal of Rare Earths2010,28,S1: | 4 |
| 18 | 漫谈高浓度甲醛在刨花板用胶黏剂生产中的应用显示文摘分析了高浓度甲醛溶液在刨花板用胶生产中的应用,探讨了该生产技术没有得到广泛应用的主要原因,并提出了高浓度甲醛供应问题的解决办法。 | 宋晓棠 赵天宇 伊梅生 伊弘 | 2014 | 中国人造板2014,21,3: | 4 |
| 19 | 耐盐性高吸水树脂的辐照合成及其后处理工艺显示文摘本实验提供了一种新的PVA/PAAS/EDTA高吸水性树脂及其制备方法。采用聚乙烯醇(Poly vinyl alcohol,PVA)、聚丙烯酸钠(Poly acrylate sodium,PAAS)和乙二胺四乙酸(Ethylene diamine tetraacetic acid,EDTA),将由这些材料组成的水溶液经电子束辐射交联合成共聚物凝胶,经浸洗液溶胀和洗涤,萃冻和冷冻干燥后处理,制备出耐盐性高吸水性树脂。采用正交设计原理选出最佳配比,用不同配比的洗涤液进行后处理,研究洗涤液对树脂吸液性能的影响。测试树脂的各项性能,与国内外著名产品进行比较。结果表明,本实验制备出的高吸水性树脂具有优良的吸液速率和离心保液量,去离子水吸液倍率((821.05±1.61)g·g-1)和生理盐水吸液倍率((72.57±3.01)g·g-1)则非常显著地优于国内外著名高吸水性树脂产品(P±0.01)。 | 李莉 楚立凯 黄伟虹 岳凌 杨占山 | 2014 | 核技术2014,37,7: | 4 |
| 20 | Preparation of a Novel Cationic Photosensitive Resin(3D-SLR01) for Stereolithography 3D Printing and Determination of Its Some Properties显示文摘A novel cationic photosensitive resin(3 DSLR-01) for stereolithography 3 D printing was prepared with 3,4-epoxycyclohexylmethyl-3’,4’-epoxycyclohexane carboxylate(2021 P),1,4-cyclohexanedimethanol glycidyl ether(JX-026), diglycidyl 4,5-epoxycyclohexane-1,2-dicarboxylate(S-186), polycaprolactone polyol(Polyol-0305), novolac epoxy resin(F-51), bis(3-ethyl-3-oxetanylmethyl) ether(S-221) and a mixture of triarylsulfonium hexafluoroantimonate salts solution(UVI-6976). The properties of the photosensitive resin and its UV-cured films were investigated by some instruments and equipment.The experimental results show that the critical exposure(Ec) of the photosensitive resin is 16.3 mJ/cm^2, the penetration depth(Dp) is 0.14 mm, and the optical property of the photosensitive resin is excellent. Rectangle plates were printed by using a stereolithography apparatus(HRPL-150 A) with the photosensitive resin as the manufacturing material, and the shrinkage rates of the plates were less than 0.60%, which showed that the accuracy of the manufactured plates was very high. | 黄笔武 WU Baolin HAN Linlin LU Zhenting ZHOU Wenbin | 2019 | Journal of Wuhan University of Technology(Materials Science)2019,34,4: | 4 |