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中国有色金属学会会刊：英文版 2004年第z1期14卷 186-189页

作者： WANG Wei HOU feng-yan GUO he-tong School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China

Ni-ZrO2 nanocomposite coatings with monodispersed ZrO2 nanoparticles were prepared from the composite plating bath containing dispersant under DC electrodeposition condition. It is found that the morphology, orientation and hardness of the composite coating with monodispersed ZrO2 nanoparticles have lots of difference from the composite coating with agglomerated ZrO2 nanoparticles and pure nickel coating. Especially, the result of hardness shows that only a very low volume fraction (less than 1%) of monodispered ZrO2 nanoparticles in Ni-ZrO2 composite coatings will result in higher hardness of the coating. The hardness of Ni-ZrO2 nanocomposite coatings with monodispersed and agglomerated ZrO2 nanoparticles are HV 529 and HV 393, respectively. The hardness value of the former composite coatings is over 1.3 times higher than that of the later. All these composite coatings are 2 - 3 times higher than that of pure nickel plating (HV 207) prepared under the same conditions.

关键词： Nanocomposites electroplating coating metal matrix composites Ni-ZrO2

Enzymatic Synthesis and Characterization of Novel Polycarbonates Derived from 5-Allyloxy-1, 3-dioxan-2-one and 5, 5-Dimethvl-1.3-dioxan-2-one

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Chinese Chemical Letters 2006年第10期17卷 1385-1387页

作者： yan Ping WANG feng he Gang LIU Ren Xi ZHUO Key Laboratory of Biomedical Polymers of Ministry of Education Department of Chemistry Wuhan University Wuhan 430072

Novel polycarbonates from 5-allyloxy-1, 3-dioxan-2-one （ATMC） with 5, 5-dimethyl- 1, 3-dioxan-2-one （DTC） were successfully synthesized for the first time using immobilized porcine pancreas lipase （IPPL） as catalyst. The resulting copolymers were characterized by IR, ^1H NMR, ^13C NMR and GPC. The molecular weight （Mn） of the copolymer with molar feed ratio of 10：90 （ATMC：DTC） was 9300 and the polydispersity was 1.31, while the Mn increased to 14300 and polydispersity of 1.25 with the feed ratio of 50：50. Moreover, the composition of the copolymers agreed well with the monomer feed.

关键词： 5-Allyloxy-1 3-dioxan-2-one 5 5-dimethyl-1 3-dioxan-2-one enzyme-catalyzed ring opening polymerization polycarbonates.

Research progress on international rivers in Asia

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Journal of Geographical Sciences 2006年第3期16卷 271-276页

作者： feng yan he Daming Asian International Rivers Center Yunnan University Kunming 650091 China

With the regional population growth, socioeconomic development, more and more attention has been paid to issues on the shared water allocation and the transboundary eco-security conservation during the development of water resources in the international rivers. In this paper, the existing major problems on transboundary waters in different sub-regions of Asia, such as water shortage, transboundary waters pollution, fragile eco-environment are discussed. Then, the key scientific issues to be concerned in the next study progress on the basis of the analyses of the new research directions and focus fields are raised：（1） unpredicted changes of the hydrologic and water system, and their impacts on the allocation of the sharing waters by global changes; （2） models of the international cooperation on the international rivers on the studies of international and national water laws or regulations, policies, the relative experiences and the case studies; （3） quantificational assessment on environmental flow, available water, and the comprehensive functions and values of the international watercourse system; （4） studies on transboundary aquatic bio-diversity maintenance, transboundary pollution supervision and treatment under the rules and principles accepted by the riparian states; （5） issues on transboundary compensation at the rules of ＂payments for using＂, ＂payments for harm＂ and ＂compensation for benefit＂; （6） using advanced 3S techniques to promote the integrated watershed development and management; and so on.

关键词： research progress international rivers Asia

Gut microbiota as a target in the bone health of livestock and poultry: roles of short-chain fatty acids

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Animal Diseases 2023年第3期3卷 212-224页

作者： Shu-Cheng Huang yan-feng he Pan Chen Kai-Li Liu Atab Shaukat College of Veterinary Medicine Henan Agricultural UniversityZhengzhou 450046China Key Laboratory of Animal Biochemistry and Nutrition of Ministry of Agriculture and Rural Affairs Henan Agricultural University.Zhengzhou 450046China National Center for International Research On Animal Genetics Breeding and Reproduction(NCIRAGBR)Huazhong Agricultural UniversityWuhan 430070China

The regulation and maintenance of bone metabolic homeostasis are crucial for animal skeletal *** has been established that structural alterations in the gut microbiota and ecological dysbiosis are closely associated with bone metabolic *** gut microbiota and its metabolites,especially short-chain fatty acids(SCFAs),affect almost all organs,including the bone.n this process,SCFAs positively affect bone healing by acting directly on cells involved in bone repair after or by shaping appropriate anti-inflammatory and immunomodulatory responses:Addi-tionally,SCFAs have the potential to maintain bone health in livestock and poultry because of their various biological functions in regulating bone metabolism,including immune function,calcium absorption,osteogenesis and *** review primarily focuses on the role of sCFAs in the regulation of bone metabolism by gut microbiota and provides insight into studies related to bone health in livestock and poultry.

关键词： Bone disease Bone metabolism Gut microbiota Probiotics Short-chain fatty acids

Effects of the fenugreek extracts on high-fat diet-fed and streptozotocin-induced type 2 diabetic mice

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Animal Models and Experimental Medicine 2018年第1期1卷 68-73页

作者： Xiao-yan Li Shuang-shuang Lu Hong-lun Wang Gang Li yan-feng he Xiao-yu Liu Rong Rong Ji Li Xuan-cheng Lu Laboratory Animal Center Chinese Center for Diseases Control and Prevention The State Key Laboratory of Plateau Ecology and Agriculture Qinghai University The Center for Mitochondria and healthy Aging College of Life Sciences Yantai University The College of Pharmacy Qinghai Nationalities University

Background: To study the antidiabetic effects and mechanisms of the fenugreek extracts in streptozotocin(STZ)-induced type 2 diabetic(T2 DM) mice fed a high-fat diet(HFD).Methods: We established C57 BL/6 J mice model of T2 DM using HFD-fed and STZinduced method. Then, the mice were administered with two types of fenugreek extracts(E1, flavonoid and E2, stilbene glycoside) for 4 weeks and the effects on fasting blood glucose(FBG), weight, superoxide dismutase(SOD), catalase(CAT),malondialdehyde(MDA), and pathological indexes were ***: Administration of fenugreek extracts decreased the FBG level compared with that of the model group. Comparatively, the high-dose E2 decreased the FBG more significantly than the other treatments did. Both extracts showed an obvious antioxidant effect by increasing serum SOD and CAT activities and decreasing the MDA content. Furthermore, the high-dose E1 showed a significant difference(P he model group in the three investigated ***: Our study demonstrated that both the flavonoid and stilbene glycoside extracts of fenugreek improved the hyperglycemia in the T2 DM mice model. Moreover, the antidiabetic effects of both extracts might be due to their antioxidant activity in vivo.

关键词： C57BL/6J mice diabetes mellitus fenugreek hyperglycemia

Effect of Progressive Substitution of Cement and Lime by Powdered Shells Used as a Curing Agent for Dredged Soil in a Port Area

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 88-102页

作者： SUN yang WANG Faxin SU Yaying LI Yiwei he feng College of Harbour Coastal and Offshore EngineeringHohai UniversityNanjing 210098China Huai'an Research Institute Hohai UniversityHuai'an 223025China Jiangsu Fangyang Industrial Investment Corp.Ltd. Lianyungang 210098China

This study aimed to address the challenges of solid waste utilization,cost reduction,and carbon reduction in the treatment of deep-dredged soil at Xuwei Port in Lianyungang city of *** research in this area was ***,a curing agent made from powdered shells was used to solidify the dredged soil in *** employed laboratory orthogonal tests to investigate the physical and mechanical properties of the powdered shell-based curing *** was collected by conducting experiments to assess the role of powdered shells in the curing process and to determine the optimal ratios of powdered shells to solidified soil for different *** development of strength in solidified soil was studied in both seawater and pure water *** study revealed that the strength of the solidified soil was influenced by the substitution rate of powdered shells and their interaction with *** cement content had a positive effect on *** high-strength solidified soil,the recommended ratio of wet soil:cement:lime:powdered shells were 100:16:4:4,while for low-strength solidified soil,the recommended ratio was 100:5.4:2.4:***,under appropriate conditions,improved short-term strength by promoting the formation of expansive ettringite minerals that contributed to cementation and *** findings suggest that the combination of cement and powdered shells is synergistic,positively affecting the strength of solidified *** recommended ratios provide practical guidance for achieving desired strength levels while considering factors such as cost and carbon *** role of seawater in enhancing short-term strength through crystal formation is noteworthy and can be advantageous for certain *** conclusion,this research demonstrates the potential of using a powdered shell-based curing agent for solidifying dredged soil in an environmentally friendly and cost-effective *** recommended ratios for different str

关键词： carbon reduction and solidification dredged soil abandoned shells orthogonal test chemical additives(lime and cement) unconfined compressive strength(UCS)

对不同老化时间的聚氯乙烯吸附甲基橙的机理研究

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塑料科技 2020年第7期48卷 31-34页

作者：严鹤峰陕西广播电视大学陕西西安710119

以聚氯乙烯(PVC)微塑料为吸附材料,以甲基橙(MO)为目标污染物,通过紫外光照对PVC进行老化,研究老化时间对PVC吸附MO的影响。采用扫描电镜、全反射红外光谱对不同老化时间的PVC微塑料进行表征,探讨老化时间对PVC微塑料表面性质的影响。... 详细信息

以聚氯乙烯(PVC)微塑料为吸附材料,以甲基橙(MO)为目标污染物,通过紫外光照对PVC进行老化,研究老化时间对PVC吸附MO的影响。采用扫描电镜、全反射红外光谱对不同老化时间的PVC微塑料进行表征,探讨老化时间对PVC微塑料表面性质的影响。结果表明:老化PVC微塑料表面产生裂纹和孔隙,使得饱和吸附量逐渐增加;同时,老化可以使PVC微塑料表面产生一定含氧基团,表面极性增加,与MO的相互作用力随之增大;当吸附MO时,随着老化时间延长,Freudlich模型的拟合度最好,表明老化PVC微塑料对于MO的吸附表现为不均匀吸附。且随着老化的进行,其饱和吸附量逐渐增加,最大为4.7 mg/g。

关键词：聚氯乙烯紫外老化吸附

Bioinspired Passive Tactile Sensors Enabled by Reversible Polarization of Conjugated Polymers

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Nano-Micro Letters 2025年第1期17卷 361-377页

作者： feng he Sitong Chen Ruili Zhou Hanyu Diao yangyang Han Xiaodong Wu School of Mechanical Engineering Sichuan UniversityChengdu 610065People’s Republic of China School of Software Engineering Chongqing University of Posts and TelecommunicationsChongqing 400065People’s Republic of China State Key Laboratory of Polymer Materials Engineering Sichuan UniversityChengdu 610065People’s Republic of China

Tactile perception plays a vital role for the human body and is also highly desired for smart prosthesis and advanced *** to active sensing devices,passive piezoelectric and triboelectric tactile sensors consume less power,but lack the capability to resolve static ***,we address this issue by utilizing the unique polarization chemistry of conjugated polymers for the first time and propose a new type of bioinspired,passive,and bio-friendly tactile sensors for resolving both static and dynamic ***,to emulate the polarization process of natural sensory cells,conjugated polymers(including poly(3,4-ethylenedioxythiophen e):poly(styrenesulfonate),polyaniline,or polypyrrole)are controllably polarized into two opposite states to create artificial potential *** controllable and reversible polarization process of the conjugated polymers is fully in situ ***,a micro-structured ionic electrolyte is employed to imitate the natural ion channels and to encode external touch stimulations into the variation in potential difference *** with the currently existing tactile sensing devices,the developed tactile sensors feature distinct characteristics including fully organic composition,high sensitivity(up to 773 mV N^(−1)),ultralow power consumption(nW),as well as superior *** demonstrations,both single point tactile perception(surface texture perception and material property perception)and two-dimensional tactile recognitions(shape or profile perception)with high accuracy are successfully realized using self-defined machine learning *** tactile sensing concept innovation based on the polarization chemistry of conjugated polymers opens up a new path to create robotic tactile sensors and prosthetic electronic skins.

关键词： Passive tactile sensors Reversible polarization of conjugated polymers Tactile perception Machine learning algorithm Object recognition

Multifunctional Nacre‑Like Nanocomposite Papers for Electromagnetic Interference Shielding via heterocyclic Aramid/MXene Template‑Assisted In‑Situ Polypyrrole Assembly

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Nano-Micro Letters 2025年第3期17卷 37-54页

作者： Jinhua Xiong Xu Zhao Zonglin Liu he Chen Qian yan Huanxin Lian Yunxiang Chen Qingyu Peng Xiaodong he National Key Laboratory of Science and Technology On Advanced Composites in Special Environments Center for Composite Materials and StructuresHarbin Institute of TechnologyHarbin 150080People’s Republic of China

Robust, ultra-flexible, and multifunctional MXene-basedelectromagnetic interference (EMI) shielding nanocomposite filmsexhibit enormous potential for applications in artificial intelligence,wireless telecommunication, and portable/wearable electronic *** this work, a nacre-inspired multifunctional heterocyclic aramid(HA)/MXene@polypyrrole (PPy) (HMP) nanocomposite paper withlarge-scale, high strength, super toughness, and excellent tolerance tocomplex conditions is fabricated through the strategy of HA/MXenehydrogel template-assisted in-situ assembly of PPy. Benefiting from the"brick-and-mortar" layered structure and the strong hydrogen-bondinginteractions among MXene, HA, and PPy, the paper exhibits remarkable mechanical performances, including high tensile strength (309.7 MPa),outstanding toughness (57.6 MJ m−3), exceptional foldability, and structural stability against ultrasonication. By using the template effect ofHA/MXene to guide the assembly of conductive polymers, the synthesized paper obtains excellent electronic conductivity. More importantly,the highly continuous conductive path enables the nanocomposite paper to achieve a splendid EMI shielding effectiveness (EMI SE) of 54.1 dBat an ultra-thin thickness (25.4 μm) and a high specific EMI SE of 17,204.7 dB cm2g−1. In addition, the papers also have excellent applicationsin electromagnetic protection, electro-/photothermal de-icing, thermal therapy, and fire safety. These findings broaden the ideas for developinghigh-performance and multifunctional MXene-based films with enormous application potential in EMI shielding and thermal management.

关键词： MXene Remarkable mechanical properties heterocyclic aramid Electromagnetic interference shielding Polypyrrole Multifunctionality

不溶性淀粉黄原酸酯处理Cr(Ⅵ)废水的研究

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电镀与精饰 2013年第5期35卷 43-46页

作者：严鹤峰李琛陕西工商职业学院陕西西安710119 陕西理工学院化学与环境学院陕西汉中723001

以土豆淀粉为原料、环氧氯丙烷为交联剂制备交联淀粉,再进行黄原酸化反应制备不溶性淀粉黄原酸酯,利黄原酸酯吸附电镀废水中的Cr(Ⅵ)。通过正交试验确定黄原酸酯对含Cr(Ⅵ)废水的最佳实验条件,ρ[Cr(Ⅵ)]=25mg/L时,以40r/min慢速搅拌,在... 详细信息

以土豆淀粉为原料、环氧氯丙烷为交联剂制备交联淀粉,再进行黄原酸化反应制备不溶性淀粉黄原酸酯,利黄原酸酯吸附电镀废水中的Cr(Ⅵ)。通过正交试验确定黄原酸酯对含Cr(Ⅵ)废水的最佳实验条件,ρ[Cr(Ⅵ)]=25mg/L时,以40r/min慢速搅拌,在pH=8,反应t为40min,投加4g/L黄原酸酯时,Cr(Ⅵ)去除率为99.7%,Cr(Ⅵ)的出水质量浓度为0.075mg/L,低于国家最高允许排放限值中的新建电镀企业排放限值。

关键词：不溶性淀粉黄原酸酯 Cr(Ⅵ) 电镀废水重金属废水