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葛根汤加减病症结合治疗痤疮的临床思路浅谈
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作者 孙成力 金道鹏 +2 位作者 唐占英 胡志俊 肖静 《TMR经典中医研究》 2021年第2期7-11,共5页
痤疮是青少年常见病,部分中年人也有发作,临床治疗后多易反复发作。痤疮发作在皮肤足太阳膀胱经,多因为青春期雄激素分泌旺盛,导致皮脂分泌旺盛,毛孔堵塞不畅而出现。我们临床运用葛根汤加减解肌透疹、调理脾胃、清敛相火,根据男女体质... 痤疮是青少年常见病,部分中年人也有发作,临床治疗后多易反复发作。痤疮发作在皮肤足太阳膀胱经,多因为青春期雄激素分泌旺盛,导致皮脂分泌旺盛,毛孔堵塞不畅而出现。我们临床运用葛根汤加减解肌透疹、调理脾胃、清敛相火,根据男女体质、年龄的差异等因素调整处方,女性注重养肝血,男性注重养肾阴,中年人或脾虚患者使用健脾化湿的方法,多能取得较好临床疗效。 展开更多
关键词 痤疮 葛根汤 男女差异 性激素 脂肪代谢
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亲-亲/疏-疏双子界面在复杂流体中润滑行为的研究
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作者 胡志军 孙钟媛 +4 位作者 陈华 陈璐 杜淼 宋义虎 郑强 《高分子学报》 SCIE CAS CSCD 北大核心 2024年第8期1081-1090,共10页
植入医用软材料摩擦行为对材料植入效果及副作用有决定性影响.分别以临床常用聚二甲基硅氧烷(PDMS)弹性体及类生物组织材料聚丙烯酰胺(PAM)水凝胶为摩擦副,采用丙烯酸衍生聚合物(EMT-10)水分散液为摩擦介质,构建摩擦系统,研究摩擦曲线... 植入医用软材料摩擦行为对材料植入效果及副作用有决定性影响.分别以临床常用聚二甲基硅氧烷(PDMS)弹性体及类生物组织材料聚丙烯酰胺(PAM)水凝胶为摩擦副,采用丙烯酸衍生聚合物(EMT-10)水分散液为摩擦介质,构建摩擦系统,研究摩擦曲线变化趋势及其影响因素.结果显示,疏水PDMS弹性体对EMT-10聚合物具有较强的吸附作用,其润滑液层由摩擦界面吸附和受限空间束缚的EMT-10聚合物链共同构成.与疏水PDMS弹性体相比,亲水PAM水凝胶与EMT-10聚合物链吸附作用弱,润滑液层由水凝胶表面本体网链和束缚EMT-10聚合物链组成.相对液膜厚度参数可关联界面性质与润滑介质流变行为,判断摩擦系统所处摩擦曲线区域及变化趋势. 展开更多
关键词 润滑 双子界面 硅橡胶 水凝胶
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Polar Phase Formation and Piezoelectricity of PVDF by Hot-pressing under Electrostatic Intermolecular Interactions 被引量:3
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作者 Jing-hua Zhao Bao-Sheng He +3 位作者 Ao-Shen Li Chao-Nan Wang Qing-Qing Li zhi-jun hu 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2022年第7期799-806,共8页
Piezoelectric poly(vinylidene fluoride)(PVDF)has received considerable attention due to its ability of interconverting mechanical into electric energies and potential applications in wearable electronics.To achieve pi... Piezoelectric poly(vinylidene fluoride)(PVDF)has received considerable attention due to its ability of interconverting mechanical into electric energies and potential applications in wearable electronics.To achieve piezoelectricity,it is important to simultaneously control the formation of polar phases,crystallinity,and dipole alignments in PVDF-based films.Here we demonstrate that piezoelectricity can be obtained by directly hot-pressing PVDF films sandwiched between chitosan or cellulose films.The electrostatic interactions between PVDF and chitosan or cellulose enabled an exceptional high content of polar phases(β-andγ-phases)up to 90%and a measured piezoelectric charge coefficient d_(33)of up to-30 pC/N.This study provides a simple and low-cost approach for obtaining piezoelectric PVDF films used for sensors,actuators,and energy harvesters. 展开更多
关键词 Poly(vinylidene fluoride) PIEZOELECTRICITY Electrostatic interactions HOT-PRESSING
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Highly Transparent and Adhesive Poly(vinylidene difluoride)Films for Self-Powered Piezoelectric Touch Sensors 被引量:2
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作者 Qing-Qing Li Guang-Kuo Wang +1 位作者 Zi-Xu Liang zhi-jun hu 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2022年第7期726-737,共12页
With the rapid development of internet of things,self-powered touch sensors made of piezoelectric fluorinated polymers have attracted significant interest because they can constantly convert mechanical energy into ele... With the rapid development of internet of things,self-powered touch sensors made of piezoelectric fluorinated polymers have attracted significant interest because they can constantly convert mechanical energy into electrical energy without external power supply.However,it is still challenging to fabricate fluorinated polymer films with good adhesion and high output performance with a large-scale and low-cost method while maintaining high transparency,which are extremely important for simultaneous optical detection and electromechanical transduction.In this work,we demonstrate that the incorporation of a molecular ferroelectric-dabcoHReO_(4)(DH)into poly(vinylidene difluoride)(PVDF)solution enables high-throughput and low-temperature processing of flexible and transparent piezoelectric films by scalable processing method.The effects of multiaxial DH are multiple.First,DH can trigger the phase transition of PVDF fromα-toβ-phase and realize the orderly orientation of PVDF,which guarantees higher piezoelectric performance without any additional electrical poling process.Second,the hydrophilic nature of DH can improve the adhesion properties of PVDF,which in turn improve the stability and durability of the devices.By optimizing the fabrication processes,the transmittance of the piezoelectric touch sensors based on PVDF films and Ag nanowires coated poly(ethylene terephthalate)electrodes can be higher than 94%.The piezoelectric voltage constant g;of the transparent films can reach to 1.2 V·m·N;,which is at least three times higher than the commercially available PVDF films obtained by stretching.These results indicate that the flexible piezoelectric sensors have potential applications in transparent electronic devices for mechanical sensing and energy harvesting. 展开更多
关键词 PVDF TRANSPARENT ADHESIVE Large scale Piezoelectric sensor
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