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| 1 | Biomineralization of phototrophic microbes in silica-enriched hot springs in South China显示文摘Microbial mats in two hot springs in South China were sampled for the research of mineralization of microbes and its mechanism by the methods of geology and modern biology. The results show that hot spring microbes have the key capability for enrichment of Si, Al, Fe, Ca and other elements, and the microbes are also crucial for the formation of SiO2, CaCO3, clay and so on. The extracellular polymeric substances (EPS) play important roles in the process of mineralization of hot spring microbes, which mainly takes place in the layer of EPS outside cell wall or sheath of cyanobacteria. The sheath outside cell wall, which keeps the normal metabolism of cyanobacteria during the process of mineralization on its surface, is also considerable for the biomineralization of cyanobacteria. According to structure and mineralization characteristics of two microbial mats, the process of mineralization can be divided into three stages, namely, early surface mineralization, middle degradation mineralization, and late des- quamation of mineral. The above conclusions are significant for comprehension of the process of mineralization, the process of deposition and the preservation of microfossil in modern and ancient extreme environments. | PENG XiaoTong ZHOU HuaiYang WU ZhiJun JIANG Lei TANG Song YAO HuiQiang | 2007 | Chinese Science Bulletin2007，52，3： | 6 |
| 2 | Microbe-related precipitation of iron and silica in the Edmond deep-sea hydrothermal vent field on the Central Indian Ridge显示文摘Microbial mats, several millimeters thick and brown-yellow to white in color, were collected in hollow inside of chimney structure from Edmond hydrothermal field on the Central Indian Ridge. Microbes with shapes of rod and helical stalk-like filaments were observed in the microbial mats, and are com- monly characterized by their cells completely encrusted by thick mineralized layers, made up of large amounts of amorphous silica and minor amounts of iron oxides. Transmission Electron Microscope observation has demonstrated that the acicular Fe-bearing matter was not only heterogenously dis- tributed on the surface of the cell wall, but also deposited in the inside of cell, suggesting that bio-precipitation of Fe had occurred both on the surface and in the interior of cell. Microbial silicification was also commonly found in the mats. Silica usually precipitated homogeneously on the surface of the microbes and forms micro-laminated layers, which might be controlled by the inorganic process of precipitation in hydrothermal environment. The biomineralization phenomenon in the mi- crobial mats showed that the precipitation of Fe and Si was closely related to microbes in hydrothermal environment. Considering that hydrothermal activities provided required chemical elements for miner- alization, it is suggested that this biomineralization process also might be driven by hydrothermal ac- tivities at the sea floor to some extent. | PENG XiaoTong ZHOU HuaiYang YAO HuiQiang LI diangTao TANG Song JIANG Lei WU ZiJun | 2007 | Chinese Science Bulletin2007，52，23： | 5 |
| 3 | Early-stage mineralization of hydrothermal tubeworms: New insights into the role of microorganisms in the process of mineralization显示文摘As an important part of marine hydrothermal system, hydrothermal vent faunas live in hydrothermal inorganic environment and closely interact with hydrothermal inorganic environment. Sometimes, they can participate in the mineralization process of modern hydrothermal site. Hydrothermal vent faunas, particularly vestimentiferan and polychaete tubeworms, are occasionally preserved in the geological record. Study on the early mineralization process of hydrothermal vent fauna is significant for under- standing the interaction between mineral and organism, and also the formation and preservation mechanism of geological fossil in hydrothermal environment. In this paper, the early stage of miner- alization of Vestimentiferan Ridgeia piscesae tubes collected from Juan de Fuca Ridge is studied. The results showed that a lot of filamentous microorganisms were unevenly distributed on the surface of internal wall and in the interspace of the wall of tubeworm. In some cases, microorganisms aggregated as thin layers in or on the wall of tubeworm. The surfaces of microbial cells and the products of micro- bial degradation may play an important role in the early mineralization of tubeworm. Semitransparent thin layers of organic matter containing sulfur and sulfur granules were commonly found on the wall of tubeworm with lower degree of mineralization. The degradation production of these semitransparent thin layers may accelerate the mineralization of tube wall during the early stage. EDS results showed that on the tube walls some chemical elements such as Fe, P, Ca and Si are selectively enriched from ambient hydrothermal environment. Interestingly, P, Ca and Si covary with Fe content. Because element S originated from the bio-oxidation of H2S by symbiotic microorganism in the tissue of tubeworm, it can be considered as a biomarker when studying the mineralization process of tube wall. Based on the characteristics of tubeworms with different degrees of mineralization, we suggested that the early mineralization stage of tube wall was mainly controlled by microbial-induced mineralization and the degradation process of tube wall. | PENG XiaoTong ZHOU HuaiYang TANG Song YAO HuiQiang JIANG Lei WU Zidun | 2008 | Chinese Science Bulletin2008，53，2： | 3 |
| 4 | Materials Characterization显示文摘 | Feng Jicai Wu Huiqiang He Jingshan | 2005 | 54(2):992005，54，2： | 1 |
| 5 | XRD and TEM analysis of Fe3 Al alloy layer on the surface of the ealorized steel 显示文摘 | LI Yajiang WANG Juan WU Huiqiang | 2001 | Materials Research Bulletin2001，36，13： | 1 |
| 6 | Oral nano-antioxidants improve sleep by restoring intestinal barrier integrity and preventing systemic inflammation显示文摘Sleep deprivation(SD)is a severe public health threat that can cause systemic inflammation and nerve damage.Few effective and side-effect-free drugs are available to address SD.However,the bidirectional communications between the brain and gut provide new strategies for anti-SD therapeutics.Here we explored oral delivery of fullerene nano-antioxidants(FNAO)in the SD model to improve sleep by regulating abnormal intestinal barrier and systemic inflammation via the brain-gut axis.SD caused excessive reactive oxygen species(ROS)production and hyperactive inflammatory responses in the intestines of zebrafish and mouse models,leading to disturbed sleep patterns and reduced brain nerve activity.Of note,based on the property of the conjugatedπbond of the C_(60)structure to absorb unpaired electrons,oral FNAO efficiently reduced the excessive ROS in the intestines,maintained redox homeostasis and intestinal barrier integrity,and ameliorated intestinal and systemic inflammation,resulting in superior sleep improvement.Our findings suggest that maintaining intestinal homeostasis may be a promising avenue for SD-related nerve injury therapy. | Zhanfeng Wu Lei Liu Lei Li Xinran Cao Wang Jia Xiaodan Liao Zhongpu Zhao Hedong Qi Guoqiang Fan Huiqiang Lu Chunying Shu Mingming Zhen Chunru Wang Chunli Bai | 2023 | National Science Review2023，10，12： | 1 |
| 7 | Improved high Q value of CaTiO3-Ca( Mg1/3Nb2/3 )O3 solid solution with near zero temperature coefficient of resonant frequency显示文摘 | CHENG Liang-huang CHEN Huiqiang WU Chen-eher | 2001 | Materials Research Bulletin2001，36，： | 1 |
| 8 | Interfacial microstructure and strength of the dissimilar joint Ti 3 Al/TC4 welded by the electron beam process显示文摘 | Hongtao Zhang Peng He Jicai Feng Huiqiang Wu | 2006 | Materials Science & Engineering A2006，，1： | 1 |
| 9 | XRD and TEM analysis of Fe3A1 alloy layer on the surface of the calorized steel显示文摘 | Li Yajiang Wang Juan Wu Huiqiang | 2001 | Materials Research Bulletin2001，36，13： | 1 |
| 10 | The evolution of precipi- ration and microslrueture in friction stir wehled 2195 -T8 ANti al- loy显示文摘 | Qin Hailong Zhang Hua Wu Huiqiang | 2015 | Materials Science and Engineering A2015，626，： | 1 |
| 11 | XRD and TEM a- nalysis of Fe3A1 alloy layer on the surface of the calorized steel 显示文摘 | LI Yajiang WANG Juan WU Huiqiang | 2001 | Materials Research Bulletin2001，36，13： | 1 |
| 12 | Technology Feasible and Development Study of the Recycled Aggregates Concrete显示文摘 | Li huiqiang Du Ting Wu xianguo | 2002 | Journal of China Civil Engineering(Construction management)2002，1，1： | 1 |
| 13 | Effect of welding speed on the material flow patterns in friction stir welding of AZ31 magnesium alloy显示文摘The clear zigzag-line pattern on transverse cross sections can be used to explain the formation mechanism of the weld nugget when friction stir welded AZ31 magnesium alloy without any other insert material is used as mark. It provides a simple and useful method to research the joining mechanism of friction stir welding. The rotation speed is kept at 1000 r/min and the welding speed changes from 120 mm/min to 600 mm/min. The macrostructure on the transverse cross section was divided into several parts by faying surface. The results show that the shape and formation procedure of the weld nugget change with the welding speed. There are two main material flows in the weld nugget:one is from the advancing side and the other is from the retreating side. A simple model on the weld nugget formation of FSW is presented in this article. | ZHANG Hua Wu Huiqiang Huang Jihua LIN Sanbao WU Lin | 2007 | Rare Metals2007，26，2： | 1 |
| 14 | Microstructure evolution and fracture behaviour for electron beam welding of Ti-6Al-4V显示文摘 | Wu Huiqiang Feng Jicai He Jingshan | 2004 | Bulletin of Materials Science2004，，4： | 1 |
| 15 | Characterization of interface in diffusion bonded Fe3Al/Q235 carbon steel dissimilar material显示文摘 | Li Yajiang Wu Huiqiang Wang Juan | 2003 | Materials Science and Technology2003，19，2： | 1 |
| 16 | XRD and TEM analysis of Fe3Al alloy layer on the surface of the calorized steel 显示文摘 | LI YAJIANG WANG JUAN WU HUIQIANG | 2001 | Materials Research Bulletin2001，36，13： | 1 |
| 17 | Ultrastructural Evidence for a Novel Accumulation of Ca in a Microbial Mat from a Slight Acidic Hot Spring显示文摘微生物引起的地席是能控制或导致钙(Ca ) 的降水的生态系统整个地质的时间在地球上的碳酸盐。在现在的学习,我们在 Ca 的新奇累积上报导,和铁(Fe ) ,在从在华南的一个细微酸的温泉(pH=5.9 ) 收集的微生物引起的地席。联合一连串的途径,包括环境扫描电子显微镜学, X 光检查微量分析,传播电子显微镜学,和选择区域电子衍射,我们为包含与 cyanobacteria 在微生物引起的地席猛抛联系的 Ca 和 Fe 的非结晶的针状的总数提供 ultrastructral 证据。器官的矩阵被考虑为 Ca 的降水负责的 Cyanobacterial 光合作用和 exopolymeric。这些非结晶的针状的总数可能暗示发生在微生物引起的地席的石灰化的早阶段。Ca 和 Fe 一起沉淀在温泉显示无机的元素降水的另一个潜在的重要方法微生物引起的地席。我们的结果在细微酸的温泉环境提供卓见进 cyanobacterial 石灰化和微化石保藏的可能的机制。 | PENG Xiaotong ZHOU Huaiyang YAO Huiqiang, LI Jiangtao WU Zijun | 2010 | Acta Geologica Sinica(English Edition)2010，84，3： | 0 |
| 18 | Microstructure,mechanical and fracture properties of friction stir welded 2195 Al-Li alloy joints显示文摘The 8 mm-thick 2195 Al-Li alloy joints were achieved by Friction Stir Welding(FSW).The microstructural evolution,temperature-dependent mechanical properties,and fracture properties were studied.The T1,δ’/β’and θ’precipitates were observed in the Base Metal(BM)and the Heat Affected Zone(HAZ).Most of the precipitates,except for re-precipitated δ’/β’phases,were dissolved in the Nugget Zone(NZ).The tensile specimens that failed at cryogenic temperatures(-196℃)had the maximum Ultimate Tensile Strength(UTS),and the fracture surface showed the inter-granular fracture characteristics.Compared to those at room temperature(25℃),the decreasing tensile properties at high temperature(180℃)were related to microstructure and strain hardening effects.The NZ presented the optimal fracture toughness,and the Crack Tip Opening Displacement(CTOD)was mutually dominated by microhardness and grain size.Analysis on Fatigue Crack Growth(FCG)rates indicates that the Thermal-Mechanically Affected Zone(TMAZ)exhibited the most superior fatigue resistance performance at stress intensity range below17 MPa.m1/2due to compressive residual stress and the crack closure effect.The fatigue fracture surfaces reveal that the crack propagation zone was characterized by the striations and secondary cracks.Also,inter-granular fracture behavior was responsible for the fastest FCG rates in the NZ. | Guangda SUN Weizhao SUN Li ZHOU Sanfeng LUO Zili ZHANG Debo LIU Huiqiang WU | 2024 | Chinese Journal of Aeronautics2024，37，1： | 0 |
| 19 | In situ study on medium-range order evolution during the polyamorphous phase transition in a Pd-Ni-P nanostructured glass显示文摘Engineering multiscale structural hierarchies in glassy alloys enable a broad spectrum of potential applications.Metallic glasses were born in hierarchical structures from atomic-to-nanometer scales.However,the frozen-in structures in traditional metallic glasses prepared by rapid quenching techniques are challenging to tailor.Here,we show that a PdNiPbulk nanostructured glass of polyamorphous interfacial structures was prepared by inert-gas condensation with a laser evaporation source,and its multiscale structures could be engineered.In-situ scattering experiment results reveal polyamorphous phase transitions occurred in the interfacial regions,which are accompanied by the evolution of medium-range order and the nanoscale heterogeneous structures during the condensation process of glassy nanoparticles under high pressure and the following heating process.Moreover,changes in the cluster connectivity resulting from repacking of the local ordering induced by pressure and temperature could be observed.The thermophysical and mechanical properties,including boson peaks,hardness,and elasticity modulus,could be changed as a function of heat-treatment parameters.Our findings would shed light on the synthesis of bulk nanostructured glassy alloys with tailorable thermodynamic and dynamical behavior as well as mechanical properties based on the understanding of metastability for polyamorphous interfacial phases. | Shu Fu Sinan Liu Jiacheng Ge Junjie Wang Huiqiang Ying Shangshu Wu Mengyang Yan Li Zhu Yubin Ke Junhua Luan Yang Ren Xiaobing Zuo Zhenduo Wu Zhen Peng Chain-Tsuan Liu Xun-Li Wang Tao Feng Si Lan | 2022 | Journal of Materials Science & Technology2022，，30： | 0 |
| 20 | Watt Linkage–Based Legged Deployable Landing Mechanism for Reusable Launch Vehicle: Principle, Prototype Design, and Experimental Validation显示文摘The reusable launch vehicle (RLV) presents a new avenue for reducing cost of space transportation. The landing mechanism, which provides landing support and impact absorption, is a vital component of the RLV at final stage of recovery. This study proposes a novel legged deployable landing mechanism (LDLM) for RLV. The Watt-II six-bar mechanism is adopted to obtain the preferred configuration via the application of the linkage variation approach. To endow the proposed LDLM with advantages of large landing support region, lightweight, and reasonable linkage internal forces, a multi-objective optimization paradigm is developed. Furthermore, the optimal scale parameters for guiding the LDLM prototype design is obtained numerically using the non-dominated sorting genetic algorithm-II (NSGA-II) evolutionary algorithm. A fully-functional scaled RLV prototype is developed by integrating the gravity-governed deploying scheme to facilitate unfolding action to avoid full-range actuation, a dual-backup locking mechanism to enhance reliability of structure stiffening as fully deployed, and a shock absorber (SA) with multistage honeycomb to offer reliable shock absorbing performance. The experimental results demonstrate that the proposed LDLM is capable of providing rapid and smooth deployment (duration less than 1.5 s) with mild posture disturbance to the cabin (yaw and pitch fluctuations less than 6°). In addition, it provides satisfactory impact attenuation (acceleration peak less than 10g (g is the gravitational acceleration)) in the 0.2 m freefall test, which makes the proposed LDLM a potential alternative for developing future RLV archetype. | Haitao Yu Baolin Tian Zhen Yan Haibo Gao Hongjian Zhang Huiqiang Wu Yingchao Wang Yuhong Shi Zongquan Deng | 2023 | Engineering2023，，1： | 0 |
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