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Highly Thermally Conductive Polymer/Graphene Composites with Rapid Room‑Temperature Self‑Healing Capacity

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Nano-Micro Letters 2022年第8期14卷 194-207页

作者： huitao Yu Can Chen Jinxu Sun Heng zhang Yiyu Feng Mengmeng Qin Wei Feng School of Materials Science and Engineering and Tianjin Key Laboratory of Composite and Functional Materials Tianjin UniversityTianjin 300350People’s Republic of China Key Laboratory of Materials Processing and Mold Ministry of EducationZhengzhou UniversityZhengzhou 450002People’s Republic of China

Composites that can rapidly self-healing their structure and function at room temperature have broad application ***,in view of the complexity of composite structure and composition,its self-heal is facing *** this article,supramolecular effect is proposed to repair the multistage structure,mechanical and thermal properties of composite materials.A stiff and tough supramolecular frameworks of 2-[[(butylamino)carbonyl]oxy]ethyl ester(PBA)–polydimethylsiloxane(PDMS)were established using a chain extender with double amide bonds in a side chain to extend prepolymers through ***,by introducing the copolymer into a folded graphene film(FGf),a highly thermally conductive composite of PBA–PDMS/FGf with self-healing capacity was *** ratio of crosslinking and hydrogen bonding was optimized to ensure that PBA–PDMS could completely self-heal at room temperature in 10 ***,PBA–PDMS/FGf exhibits a high tensile strength of 2.23±0.15 MPa at break and high thermal conductivity of 13±0.2 W m^(−1)K^(−1);of which the self-healing efficiencies were 100%and 98.65%at room temperature for tensile strength and thermal conductivity,*** excellent self-healing performance comes from the efficient supramolecular interaction between polymer molecules,as well as polymer molecule and *** kind of thermal conductive self-healing composite has important application prospects in the heat dissipation field of next generation electronic devices in the future.

关键词： Carbon/polymer composites Self-healing capacity High thermal conductivity Molecular simulation Room temperature

棉秆腐熟过程中相关指标及可培养微生物数量的变化

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新疆农业科学 2020年第10期57卷 1871-1877页

作者：代金平王志方王小武冯蕾陈竞谢玉清张慧涛古丽·艾合买提杨新平新疆农业科学院微生物应用研究所乌鲁木齐830091

【目的】研究不同添加物配方对棉秸秆腐熟过程中相关指标和微生物数量的变化。【方法】以棉秸秆为原料,设置不同的添加物配方,进行棉秸秆堆肥腐熟发酵。对其发酵相关指标(温度、pH、电导率、速效氮、磷、钾浓度)及主要微生物变化进行测... 详细信息

【目的】研究不同添加物配方对棉秸秆腐熟过程中相关指标和微生物数量的变化。【方法】以棉秸秆为原料,设置不同的添加物配方,进行棉秸秆堆肥腐熟发酵。对其发酵相关指标(温度、pH、电导率、速效氮、磷、钾浓度)及主要微生物变化进行测定分析。【结果】3种处理的温度、pH、电导率、速效氮磷钾的变化趋势基本相同,但相对含量不同,不同处理下的微生物数量也均不同。【结论】处理3(基础配方+磷酸二氢钾2%)堆肥发酵效果最优,pH值为8.59~8.89,EC值为4 ms/cm左右,更适宜堆肥发酵。

关键词：棉秸秆堆肥发酵 pH EC 微生物数量

无柄灵芝菌LZ02高产漆酶条件及部分酶学性质分析

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新疆农业科学 2022年第6期59卷 1482-1490页

作者：杨新平谢玉清周留艳代金平王小武张慧涛王志方冯蕾新疆农业科学院微生物应用研究所/新疆特殊环境微生物重点实验室乌鲁木齐830091

【目的】从采自新疆天山的无柄灵芝菌(***)中筛选获得1株高产漆酶的LZ02菌株,对其产酶条件进行优化,研究部分酶学性质。【方法】采用单因素实验,对其产酶条件优化并研究其酶学特性,采用双向电泳检测酶蛋白。【结果】LZ02菌株产漆酶的最... 详细信息

【目的】从采自新疆天山的无柄灵芝菌(***)中筛选获得1株高产漆酶的LZ02菌株,对其产酶条件进行优化,研究部分酶学性质。【方法】采用单因素实验,对其产酶条件优化并研究其酶学特性,采用双向电泳检测酶蛋白。【结果】LZ02菌株产漆酶的最佳碳源为2.5%麦麸+1%葡萄糖,最佳氮源为干酪素;Cu^(2+)、Mg^(2+)、Fe^(2+)、Zn^(2+)和Ca^(2+)的添加对LZ02产漆酶有一定的促进作用,而Co^(2+)具有明显的抑制作用;藜芦醇和愈创木酚抑制产酶并使产酶高峰由第3 d推后至第9 d,添加没食子酸和ABTS对产酶影响不大,单宁酸对产酶有抑制作用。LZ02菌漆酶最适反应温度为60℃,且在80℃仍具有漆酶活性;在40℃,pH 4.0~5.0,酶活性最稳定;最适反应pH为3.0,Mn^(2+)、Zn^(2+)、Cu^(2+)、Ba^(2+)和K^(+)对酶稳定性有一定的促进作用,Co^(2+)、Cd^(2+)、Cr^(2+)和Pb^(2+)对酶的稳定性具有明显的破坏作用;对菌体及发酵液进行了双向电泳检测,测定其等电点为4.1;获得了1个纯化酶蛋白质谱序列,该蛋白与Ganoderma Lucidum来源的Laccase高度同源。【结论】无柄灵芝菌(***)漆酶的合成和分泌受到营养水平、培养条件、生长阶段以及培养基中诱导剂的严格调控,木质素或木质素相关的芳香类化合物、N源和C源也能调节漆酶的合成;漆酶活性对不同种类、不同浓度的金属离子以及诱导剂的响应不尽相同,其具有较复杂的生理功能及调控机制。

关键词：无柄灵芝菌漆酶产酶条件酶学特性质谱测序

Water-resistant conductive organogels with sensation and actuation functions for artificial neuro-sensory muscular systems

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SmartMat 2022年第4期3卷 632-643页

作者： Zhixing zhang Yunfei Yu huitao Yu Yiyu Feng Wei Feng School of Materials Science and Engineering Tianjin UniversityTianjinChina Tianjin Key Laboratory of Composite and Functional Materials Tianjin UniversityTianjinChina Key Laboratory of Advanced Ceramics and Machining Technology Ministry of EducationTianjinChina

The development of functional flexible conductive materials can significantly contribute to the improvement of intelligent human–computer ***,it is a challenge to endow human–machine interface with perception and response actuation ***,a customizable and multifunctional electronic conductive organogel is proposed by combining conductive carbon nanotube(CNT)clusters and flexible adhesive *** conductive CNT cluster layers generated on the surface of organogels equip the resulting organogel-based conductors with considerable quasi-superhydrophobicity and increase their potential applicability as highly sensitive stress and strain *** particular,this quasi-superhydrophobicity is insensitive to tensile *** on customizable conductive networks and entropy-driven organogel actuation,the conductive organogels can sense various strain and stress signals and imitate natural organisms with muscle actuation and *** strategy for preparing electronic conductors can enhance the rational design of soft robotics and artificial intelligence devices,facilitating further progress of human-like intelligent systems.

关键词： actuation adhesive organogel carbon nanotube cluster flexible sensor sensation

Modulation format independent blind polarization demultiplexing algorithms for elastic optical networks

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Science China(Information Sciences) 2017年第2期60卷 87-95页

作者： Tao YANG Wentao LIU Xue CHEN Erkun SUN huitao WANG Taili WANG Min zhang Jie zhang Yuefeng JI State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications Zhongxing Telecommunication Equipment Corporation

We demonstrate a novel modulation format independent algorithm for adaptive blind polarization demultiplexing for elastic optical networks(EONs). We compare the proposed algorithm with traditional constant modulus algorithm(CMA) and radius-directed algorithm(RDA), in terms of performance in PM-QPSK,PM-16 QAM and PM-64 QAM coherent system, by simulating in back-to-back(BTB) and transmission *** simulation result shows that the modulation format independent algorithm can achieve universal adaptive blind polarization demultiplexing for PM-m QAM signals and gain slightly better performance in condition of lower optical signal noise ratio(OSNR). Furthermore, we also carry out experiments to investigate the performance of the proposed algorithm in BTB and 800 km transmission scenarios for 16 GBaud PM-QPSK and PM-16 QAM. The experimental results demonstrate the conclusion of the numerical simulations.

关键词： PM-m QAM blind polarization demultiplexing algorithms modulation format independence coordinate transformation elastic optical networks(EONs)

Carbon concentrations of components of trees in lO-year-old Populus davidiana stands within the Desertification Combating Program of Northern China

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Frontiers of Earth Science 2016年第4期10卷 662-668页

作者： huitao SHEN Wanjun zhang Jiansheng CAO Xiang zhang Quanhong XU Xue YANG Dengpan XIAO Yanxia ZHAO Institute of Geographical Sciences Hebei Academy of Sciences Shijiazhuang 050011 China Key Laboratory for Agricultural Water Resources Hebei Key Laboratory for Agricultural Water-Saving Center for Agricultural Resources Research Institute of Genetics and Developmental Biology Chinese Academy of Sciences Shijiazhuang 050021 China Institute of Agro-food Science and Technology Shandong Academy of Agricultural Sciences Jinan 250100 China College of Agriculture Kunming University Kunming 650214 China

Most studies do not consider the potential variation in carbon concentration among the different tree components of the same species in regional scale. This study examined the carbon concentrations of the compo- nents （i.e., foliage, branch, stem, and root） in a 10-year-old poplar species （Populus davidiana Dode） from the Desertification Combating Program of Northern China. The highest and lowest carbon concentrations were found in the stem and foliage, respectively. There was a significant difference in carbon concentrations among the different tree components. All of the observed carbon concentrations of tree components were lower than those predicted using the conversion factor of 0.5 applied to component biomass. Stem carbon made up 59.7% of the total tree biomass carbon. The power equation estimating proportion of tree biomass carbon against the independent variable of diameter at breast height explained more than 90% of the variability in allocation of carbon among tree components. Tree height, as a second independent variable is also discussed. Our results suggest that the difference in organic carbon concentration among tree components should be incorporated into accurately develop forest carbon budget. Moreover, further investigations on how the diameter at breast height equation developed in the present study performs across broader scales are required.

关键词： biomass carbon equation carbon content,destructive sampling diameter at breast height poplar

Perclose ProGlide血管缝合器修复中心静脉导管误入锁骨下动脉1例

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中华介入放射学电子杂志 2022年第4期10卷 462-464页

作者：汪娟张慧涛胡晓俊王大帅郭辉张永裕庞鹏飞王轶中山大学附属第五医院健康管理中心广东珠海519000 中山大学附属第五医院重症医学科广东珠海519000 中山大学附属第五医院介入医学中心介入血管外科广东珠海519000

患者女,53岁,因"头晕3 d"于2022年2月19日至我院急诊就诊,初步诊断为:(1)糖尿病酮症酸中毒;(2)电解质紊乱高钠血症;(3)宫颈癌规律化疗后。入院后予告病重,心电血压、血氧监测,予以小剂量胰岛素降糖、补液扩容等对症支持治疗。入院7 h后... 详细信息

患者女,53岁,因"头晕3 d"于2022年2月19日至我院急诊就诊,初步诊断为:(1)糖尿病酮症酸中毒;(2)电解质紊乱高钠血症;(3)宫颈癌规律化疗后。入院后予告病重,心电血压、血氧监测,予以小剂量胰岛素降糖、补液扩容等对症支持治疗。入院7 h后出现血压下降、心率增快,予以建立右侧锁骨下中心静脉导管,并予以升压、补液扩容、抗感染等治疗;心电监护示:心率87次/min,血压78/56 mmHg(1 mmHg=0.133 kPa),呼吸17次/min,血氧饱和度100%。考虑合并脓毒性休克转入重症医学科,转入后予以生命支持治疗,生命体征稍稳定后发现右侧锁骨下CVC内液面波动,床旁超声提示导管进入动脉可能,后行CTA提示导管进入头臂干动脉。

关键词： Perclose ProGlide血管缝合器中心静脉导管锁骨下动脉

护肝利水汤联合特利加压素治疗肝硬化腹水临床疗效及对患者血清学指标与门静脉压力的影响

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陕西中医 2020年第5期41卷 593-596页

作者：张会涛尚丽李秋雅吕文浩冯博帅李严生 M Abu-Harb 郭青河北省衡水市第四人民医院消化内科衡水053000 河南省中医院腔镜中心郑州450000 谢菲尔德儿童医院儿童呼吸科英国武警特色医学中心研究部天津300162

目的:观察护肝利水汤联合特利加压素对肝硬化腹水患者临床疗效、血清指标与门静脉压力指标的影响。方法:选取94例肝硬化腹水患者纳入本次研究,分别纳入西药组和联合组,西药组给予常规西药治疗,联合组在西药治疗方法的基础上加用自拟护... 详细信息

目的:观察护肝利水汤联合特利加压素对肝硬化腹水患者临床疗效、血清指标与门静脉压力指标的影响。方法:选取94例肝硬化腹水患者纳入本次研究,分别纳入西药组和联合组,西药组给予常规西药治疗,联合组在西药治疗方法的基础上加用自拟护肝利水汤;1个疗程后,对比临床疗效,观察两组患者治疗前后临床与血清指标、门静脉压力指标及脾静脉内径的变化情况,统计治疗期间不良反应发生率。结果:两组临床疗效对比联合组更优(P<0.05),总有效率为联合组97.87%、西药组85.11%,差异均有统计学意义;治疗后,两组患者24 h尿量、腹水深度、体重、腹围,Cre、ALB、PT,门静脉主干内径、门静脉血流量、门静脉血流速及脾静脉内径均较本组治疗前改善,且两组对比联合组更优(P<0.05)。结论:护肝利水汤联合特利加压素能够提高肝硬化腹水的临床疗效,进一步改善患者临床指标、血清指标与门静脉压力指标。

关键词：肝硬化腹水护肝利水汤凝血酶原时间白蛋白肌酐门静脉压力

继发性肾源性异位甲状旁腺功能亢进的介入栓塞治疗

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中华介入放射学电子杂志 2020年第4期8卷 326-332页

作者：张慧涛张永裕刘伙亮胡晓俊贺嘉男甘海润庞鹏飞中山大学附属第五医院介入医学中心介入血管外科广东珠海519000 广州医科大学附属中医医院肾内科广东广州510000

目的探讨介入栓塞治疗继发性肾源性异位甲状旁腺功能亢进的有效性、安全性及可行性。方法术前通过高频超声、99mTc-MIBI甲状旁腺核素显像、增强CT或增强MRI检查评估异位甲状旁腺的解剖位置及动脉血供情况,采用介入栓塞的方式阻断其供血... 详细信息

目的探讨介入栓塞治疗继发性肾源性异位甲状旁腺功能亢进的有效性、安全性及可行性。方法术前通过高频超声、99mTc-MIBI甲状旁腺核素显像、增强CT或增强MRI检查评估异位甲状旁腺的解剖位置及动脉血供情况,采用介入栓塞的方式阻断其供血动脉,从而使其逐渐缺血坏死失去功能。结果第1例患者的异位甲状旁腺通过介入栓塞治疗后,其甲状旁腺素(parathyroid hormone,PTH)水平迅速下降,血钙、血磷亦迅速下降,皮肤瘙痒、周身骨痛等临床症状明显缓解;第2例患者因供血动脉显示不清,加之术中难以配合,仅完成部分血管栓塞,其PTH、血钙、血磷等指标呈一过性下降,但最终疗效不佳。结论介入栓塞治疗异位甲状旁腺是一种创伤小、操作简便、疗效相对可靠、安全性高的方法,成功的关键是术前明确定位及供血动脉,术中尽量完全栓塞其供血动脉,但其长期有效性尚需进一步评价。

关键词：慢性肾衰竭异位甲状旁腺介入放射学栓塞