Planning and Design of Geological Landscape Popular Science Exhibition in Urban Geopark:A Case Study of Zhengzhou Yellow River National Geopark

Urban geopark is the backyard garden of urban residents’life.Geological landscape popular science exhibition enables people to receive geological popular science knowledge easily and happily while playing,which will virtually strengthen people’s protection awareness of urban geological landscape.Urban geopark landscape is featured by unique typical geological characteristics.It is a realistic problem that troubles the planning and design of geological landscape popular science exhibition in urban geopark by effectively protecting these geological landscapes and upgrading them into urban popular science leisure tourism resources.Taking Zhengzhou Yellow River National Geopark as an example,this paper systematically studies the planning and design of geological landscape popular science exhibition in urban geopark.

Complete Collection of Traditional Chinese Arts and Crafts(Zhongguo chuantong gongyi quanji中国传统工艺全集):A Work of Ingenuity

In 1996,the Institute for the History of Natural Sciences of the Chinese Academy of Sciences began work on the Complete Collection of Traditional Ounese Arts and Crafts(Zhongguo chuantong ongyi quanji中国传统工艺全集).In 2016,Elephant Press published this twenty-volume magnum opus under the chief editorship of Lu Yongxiang路甬祥.This rich and informative book series systematically details traditional arts and crafts in over ten main categories that demonstrate Chinese scholars'mastery of fields such as lacquerware,ceramics,metal crafts,machinery,spinning and weaving,dyeing,brewing,processing of traditional Chinese materia medica,papermaking and printing,sculpting,and armor restoration.The authors are well versed in traditional Chinese arts and crafts and have the pertinent academic credentials,elevating research on the subject to a new level and breadth.However,the Complete Collection has not yet covered all significant arts and crafts,and the cultural implications have still to be explored.

Toughness enhancement of single-crystal diamond by the homoepitaxial growth of periodic nitrogen-doped nano-multilayers

Periodic nitrogen-doped homoepitaxial nano-multilayers were grown by microwave plasma chemical vapor deposition. The residual time of gases(such as CH4and N2) in the chamber was determined by optical emission spectroscopy to determine the nano-multilayer growth process, and thin, nanoscale nitrogen-doped layers were obtained. The highest toughness of 18.2 MPa·m^(1/2)under a Young’s modulus of1000 GPa is obtained when the single-layer thickness of periodic nitrogen-doped nano-multilayers is about 96 nm. The fracture toughness of periodic nitrogen-doped CVD layer is about 2.1 times that of the HPHT seed substrate. Alternating tensile and compressive stresses are derived from periodic nitrogen doping;hence, the fracture toughness is significantly improved. Single-crystal diamond with a high toughness demonstrates wide application prospects for high-pressure anvils and single-point diamond cutting tools.

Exsolved materials for CO_(2)reduction in high-temperature electrolysis cells

Electrochemical reduction of CO_(2)into valuable fuels and chemicals has become a contemporary research area,where the heterogeneous catalyst plays a critical role.Metal nanoparticles supported on oxides performing as active sites of electrochemical reactions have been the focus of intensive investigation.Here,we review the CO_(2)reduction with active materials prepared by exsolution.The fundamental of exsolution was summarized in terms of mechanism and models,materials,and driven forces.The advances in the exsolved materials used in hightemperature CO_(2)electrolysis were catalogued into tailored interfaces,synergistic effects on alloy particles,phase transition,reversibility and electrochemical switching.

Cate of Heaven:Caisson Ceilings

This book discusses the representation,connotation,and significance of Dunhuang patterns and motifs from multicultural and diverse social backgrounds,extending to the relationship between Dunhuang patterns and contemporary popular culture.

The Ait of Spatial Narration by Towers and Mountains:A New Interpretation of Traditional Chinese Gardening|

This book,grounded in the practical principles of design disciplines,takes existing garden relics as its subject,considering them as a holistic cultural phenomenon and interpreting them through a logic of reverse engineering.It seeks to uncover the correspondence between traditional garden spatial narratives and the aesthetic intentions pursued by ancient gardeners,thereby revealing universal principles in traditional garden design thinking.

A novel blue-purple Ce^(3+) doped whitlockite phosphor:Synthesis,crystal structure,and photoluminescence properties

At present,the rare earth(RE) ions doped phosphors have attracted more and more attention because of their excellent properties.In this paper,a series of novel blue-purple β-Ca_(3)(PO_(4))_(2):Ce^(3+) phosphors were synthesized by a high temperature solid phase method.The X-ray diffraction(XRD),infrared spectrum,energy dispersive spectroscopy(EDS),scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS),photoluminescence excitation and emission spectra were used to investigate the crystal structure,composition and the luminescent properties of the resulting samples.The phosphor shows a strong absorption in the ultraviolet band.Under the excitation of 269 nm,the phosphor emits a strong purple fluorescence ranging from 360 to 520 nm.When Ce^(3+) doping content is 0.07 mol,the strongest luminescence intensity is reached,and the concentration quenching mechanism is dipole-dipole(d-d)interaction for Ce^(3+) based on Dexter theory.