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Bibliometric analysis of the status and trend of biological soil crusts research from 1912 to 2023

Research in Cold and Arid Regions 2024年第2期16卷 98-108页

作者： XiaoJu Yang FaSi Wu Long Li QingLin Guo ZongRen Yu SongCong Chen XueYong Zhao Naiman Desertification Research Station Northwest Institute of Eco-Environment and ResourcesChinese Academy of SciencesLanzhouGansu 730000China University of Chinese Academy of Sciences Beijing 100049China National Research Center for conservation of Ancient Wall paintings and Earthen Sites Dunhuang AcademyDunhuangGansu 736200China Gansu Provincial Research Center for conservation of Dunhuang Cultural Heritage DunhuangGansu 736200China Cultural Heritage conservation and Design Consulting Co. Ltd.of Mogao GrottoesDunhuangGansu 736200China

Biological soil crusts(BSCs)play an important role in soil development and ecological function,and it is more important for quantitatively analyzing the processes and trends of BSCs to identify the advantages and disadvantages of BSCs research for the development and application of BSCs *** analysis of 2,186 BSCs literatures from Web of Science showed an exponential growth trend,as China and the United States as the top 2 in terms of publication *** quality publications are mainly from European and American countries,such as the United States,Germany and *** top 3 publishers are Journal of Arid Environments,Soil Biology&Biochemistry and Plant and Soil,and disciplines include ecology,environmental science,and soil science,etc..Research institutions mainly affiliate to the Chinese Academy of Sciences,United States Department of the Interior,United States Geological Survey,Hebrew University of Jerusalem,Consejo Superior de Investigaciones Cientificas,and Universidad Rey Juan *** mainly come from United States,Israel,Spain and *** are mainly from the National Natural Science Foundation of China,Spanish Government,Chinese Academy of Sciences,and National Science Foundation of the United *** soil crusts(biocrusts,cyanobacteria,lichens,moss crusts,bryophytes),drylands,climate change,photosynthesis and desert are high-frequency *** research will focus on the driving mechanisms of BSCs on global biogeochemical cycles,maintaining global biodiversity on important ecological processes,global C,N,and P *** impact on biological invasion,sandstorms,and water balance,multifunctional and reciprocal mechanisms for maintaining the stability of desert and sandy ecosystems,and impact on the formulation of management policies for arid ecosystems,corresponding to global climate change,and the estimation of regional,local,and microscale distribution of BSCs based on machine deep learning modeling gradually fo

关键词： Biological soil crusts Bibliometric analysis Web of science CiteSpace VOSviewer

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Techniques of Wallpaper(Biao Hu)in the Palace Museum:A Case Study of the Lodge of Bamboo Fragrance(Zhuxiang Guan)

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Paper And Biomaterials 2023年第3期8卷 29-37页

作者： Yue Ma Department of conservation Science and Technology The Palace MuseumBeijing100009China key laboratory of calligraphy and paintings conservation Ministry of Culture and TourismBeijing100020China

Biao Hu was one of the eight famous traditional crafts in the late Qing *** skill involved decorating the interiors of ancient buildings such as ceilings,walls,and windows and creating burial *** was primarily used for wooden buildings in northern China during the early Qing *** example,there is white-patterned wallpaper in the Forbidden City utilizing both traditional and nontraditional ***,there was wallpaper with a special pattern in the Lodge of the Bamboo Fragrance(Zhuxiang Guan).Its structure and composition were studied via morphological observations and spectral analyses,the pigments and dyes were analyzed by Raman spectroscopy and ultra-high performance liquid chromatography-mass spectrum(UPLC-MS).Traditional technology and exchanges between China and the West were discussed by the study of patterned wallpapers in other buildings of the Forbidden City.

关键词： the Palace Museum wallpaper wooden structure

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Weakly Supervised Object Localization with Background Suppression Erasing for Art Authentication and Copyright Protection

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Machine Intelligence Research 2024年第1期21卷 89-103页

作者： Chaojie Wu Mingyang Li Ying Gao Xinyan Xie Wing W.Y.Ng Ahmad Musyafa School of Computer Science and Engineering South China University of TechnologyGuangzhou 511442China Guangdong Provincial key laboratory of Artificial Intelligence in Medical Image Analysis and Application Guangdong Provincial People's HospitalGuangzhou 510180China

The problem of art forgery and infringement is becoming increasingly prominent,since diverse self-media contents with all kinds of art pieces are released on the Internet every *** art paintings,object detection and localization provide an efficient and ef-fective means of art authentication and copyright ***,the acquisition of a precise detector requires large amounts of ex-pensive pixel-level *** alleviate this,we propose a novel weakly supervised object localization(WSOL)with background su-perposition erasing(BSE),which recognizes objects with inexpensive image-level ***,integrated adversarial erasing(IAE)for vanilla convolutional neural network(CNN)dropouts the most discriminative region by leveraging high-level semantic ***,a background suppression module(BSM)limits the activation area of the IAE to the object region through a self-guidance ***,in the inference phase,we utilize the refined importance map(RIM)of middle features to obtain class-agnostic loc-alization *** experiments are conducted on paintings,CUB-200-2011 and ILSVRC to validate the effectiveness of our BSE.

关键词： Weakly supervised object localization erasing method deep learning computer vision art authentication and copyright protection

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Nondestructive testing and assessment of consolidation effects of earthen sites

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Journal of Rock Mechanics and Geotechnical Engineering 2016年第5期8卷 726-733页

作者： Xudong Wang Qinglin Guo Shanlong Yang Dexuan Zhang Yanwu Wang National Research Center for conservation of Ancient Wall paintings and Earthen Sites Dunhuang736200China key laboratory for the conservation of Ancient Wall paintings and Earthen Sites in Gansu Province Dunhuang736200China Dunhuang Academy Dunhuang 736200China Shanghai Jiao Tong University Shanghai 200240China

Earthen sites are widely distributed throughout China, and most of them belong to archaeological sites with significant values, which not only directly witness the origin, formation and development of Chinese civilization, but also possess important values for conservation and exhibition. Many researches and practices on their conservation and consolidation have been carried out; however, the consolidation effect is mainly judged by visual observation and expert evaluation. Scientific assessment of conservation and consolidation effects is a challenging issue. Many instruments in other fields cannot be directly applied to the conservation of cultural relics due to their peculiarity. In order to assess the effects of field conservation experiments, this paper tries to understand the consolidation effects at Liangzhu site using nondestructive or micro-damage methods, including thermo-physical parameters testing, infrared thermal imaging, high-density microelectrode resistivity testing, portable microscope observation, and hydrophilic and hydrophobic testing, and thereby explores the practicable methods for evaluating the properties of consolidation materials for earthen sites treatment.

关键词： Earthen sites Nondestructive methods Infrared thermal imaging High-density microelectrode resistivity Portable microscope Hydrophilic and hydrophobic testing

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Light weight concrete of Yangshao Period of China:The earliest concrete in the world

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Science China(Technological Sciences) 2012年第3期55卷 629-639页

作者： LI ZuiXiong ZHAO LinYi LI Li key laboratory of Mechanics on Western Disaster and Environment Ministry of EducationLanzhou UniversityLanzhou 730000China Chinese Academy of Cultural Heritage Beijing 100029China National Research Center for conservation of Ancient Wall paintings Dunhuang 736200China

During 1970s, the residential remains of the Yangshao Period were discovered at the Dadiwan site in Qin＇an County, Gansu Province, China. With carbon-14 dating, scanning electron microscope （SEM）, thermal expansion analyzer, polarizing microscope （PLM）, and X ray diffraction （XRD）, the microstructures and chemical compositions of the pottery shard, floor materials of the housing site, kunkur, calcined kunkur, ginger nut （calcium concretion） from the Dadiwan site were analyzed and re- searched. Analysis and simulation tests were also carried out to study the hydratability of calcined ginger nut and calcined kunkur, and the manufacturing process of the residential floors. The research shows that the floor was made of a light concrete formed by the mixture of aggregate of calcinated ginger nut （locally deposited）, red clay and kunkur. The dicalcium silicate （C2S） from the floor material of the housing site is one of the main constituents of modem cement, and the floor is also similar to modem concrete in nature. Therefore, the floor material of the housing site at the Dadiwan site was the earliest man-made concrete in the world ever discovered.

关键词： Dadiwan site floor material Yangshao Period concrete

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Numerical simulation of the behaviors of test square for prehistoric earthen sites during archaeological excavation

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Journal of Rock Mechanics and Geotechnical Engineering 2018年第3期10卷 567-578页

作者： Xudong Wang Zongren Yu Jingke Zhang Qinglin Guo Shanlong Yang Manli Sun key laboratory of Mechanics on Environment and Disaster in Western China School of Civil Engineering and Mechanics Lanzhou University National Research Center for conservation of Ancient Wall paintings and Earthen Sites Dunhuang Academy School of Cultural Heritage Northwest University

During the process of archaeological excavation in the regions of Southeast China, collapse of test square usually occurs due to poor site-specific conditions. In this paper, the fast Lagrangian analysis of continua in three dimensions（FLAC3D） is employed to reveal the behaviors of test square. Taking the archaeological works in Liangzhu prehistoric earthen sites as the research background, the paper first introduces the geological setting, excavation procedure and monitoring scheme of the studied test square. Then, the deformation of four sides of the test square is modeled using FLAC3D. By comparison, it shows that the numerical results are consistent with the results from field monitoring. The result suggests that the numerical simulation can be effectively applied to representing the actual behaviors of the test square,which is helpful for determination of excavation scheme and stability evaluation of the test square during archaeological excavation.

关键词： Prehistoric earthen site Archaeological excavation Test square behaviors Field monitoring Numerical simulations

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Fast identification of mural pigments at Mogao Grottoes using a LIBS-based spectral matching algorithm

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Plasma Science and Technology 2022年第8期24卷 23-31页

作者： Yiming ZHANG Duixiong SUN Yaopeng YIN Zongren YU Bomin SU Chenzhong DONG Maogen SU key laboratory of Atomic and Molecular Physics&Functional Materials of Gansu Province College of Physics and Electronic EngineeringNorthwest Normal UniversityLanzhou 730070People's Republic of China National Research Centre for conservation of Ancient Wall paintings and Earthen Sites Dunhuang 736200People's Republic of China

To quickly identify the mineral pigments in the Dunhuang murals,a spectral matching algorithm(SMA)based on four methods was combined with laser-induced breakdown spectroscopy(LIBS)for the first *** optimal range of LIBS spectrum for mineral pigments was determined using the similarity value between two different types of samples of the same pigment.A mineral pigment LIBS database was established by comparing the spectral similarities of tablets and simulated samples,and this database was successfully used to identify unknown pigments on tablet,simulated,and real mural debris *** results show that the SMA method coupled with the LIBS technique has great potential for identifying mineral pigments.

关键词： mural pigments laser-induced breakdown spectroscopy fast identification and classification spectral matching algorithm spectral database

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Research on preparation method of sandstone sample and its error influence

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Yantu Lixue/Rock and Soil Mechanics 2020年 41卷 237-246页

作者： Wang, Xu-Dong Yu, Zuo-Hui Pei, Qiang-Qiang Zhang, Bo Guo, Qing-Lin key laboratory of Mechanics on Disaster and Environment in Western China of Ministry of Education Lanzhou University Lanzhou 730000 China National Technological Research Center for conservation of Ancient Wall paintings and Earthen Heritage Sites Dunhuang Academy Dunhuang 73620 China key laboratory of conservation and Research for Ancient Murals and Earthen Heritage Sites of Gansu Province Dunhuang Academy Dunhuang 736200 China

Sandstone is affected by sedimentary environment, weathering depth, stratum level, etc., and there are big differences between the prepared sandstone samples and original parallel samples. In order to explore the effect of sample density, surface roughness, parallelism and diameter error along the height on the mechanical properties of sandstone, uniaxial compression tests were carried out on the samples in different density group, height-diameter ratio group (L/D = 2.0, 1.8, 1.0), cross-sectional shape group and compression direction group, respectively. Through the statistical analysis and test results of 18 samples in 6 groups, it was found that the unconfined compressive strength of the samples is significantly affected by surface roughness, density, parallelism, diameter deviation and other indicators, and shows a decreasing trend successively, the maximum error of compressive strength value is up to 37.16%. There are no specific requirements on the surface roughness in existing standards, a control threshold with strong practicality for reducing errors was proposed based on the influence degree of surface roughness, density, parallelism, and diameter deviation. The proposed threshold could effectively improve the test reliability of sandstone samples and provide technical support for evaluating sandstone samples. © 2020, Science Press. All right reserved.

关键词： Compressive strength

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Property changes of anchor grout calcined ginger nuts admixed with fly ash and quartz sand after accelerated ageing tests

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Journal of Central South University 2019年第11期26卷 3114-3125页

作者： ZHANG Jing-ke ZHANG Li-xiang ZHAO Lin-yi LIU Dun GUO Qing-lin PEI Qiang-qiang School of Civil Engineering and Mechanics Lanzhou UniversityLanzhou 730000China key laboratory of Mechanics on Disaster and Environment in Western China Ministry of EducationLanzhou 730000China National Research Center for conservation of Ancient Wall paintings and Earthen Sites Dunhuang AcademyDunhuang 736200China

Calcined ginger nuts admixed by fly ash and quartz sand (CGN-(F+S)) has been validated to be basically compatible to earthen sites as an anchor grout. Accelerated ageing tests including water stability test, temperature and humidity cycling test, soundness test and alkali resistance test are conducted with the objective to further research the property changes of CGN-(F+S) grout. Density, surface hardness, water penetration capacity, water permeability capacity, soluble salt, scanning electron microscopy (SEM) images and energy dispersive spectrometry (EDS) spectrum of these samples have been tested after accelerated ageing tests. The results show that densities of samples decrease, surface hardness, water penetration capacity and water permeability capacity of samples increase generally. Besides, soluble salt analysis, SEM and EDS results well corroborate the changes. Based on the results it can be concluded that property changes are most serious after temperature and humidity cycling test, followed by water stability, soundness and alkali resistance test in sequence. But in general, CGN-(F+S) still has good durability.

关键词： CGN-(F+S) grout accelerated ageing tests physical property change chemical property change scanning electron microscopy energy dispersive spectrometry

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Discussion on the environmental adaptability of weather-resistant measures for earthen sites in China

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Built Heritage 2022年第3期6卷 65-77页

作者： Xudong Wang Bo Zhang Qinglin Guo Qiangqiang Pei The Palace Museum Beijing 100009China. National Technological Research Center for conservation of Ancient Wall paintings and Earthen Heritage Sites Dunhuang 736200GansuChina. Gansu Provincial Research Center for conservation of Dunhuang Cultural Heritage Dunhuang 736200GansuChina. Dunhuang Academy Dunhuang 736200GansuChina.

Earthen sites are important remains of past human ***-resistant measures comprise a major part of conservation eforts for earthen *** advancements in weather-resistant techniques have been made in recent *** sites are characterised by large numbers,large scales,various types,complex compositions,and diverse existing ***-resistant measures difer signifcantly in their environmental *** environmental adaptability of weather-resistant measures severely restricts further development and popularisation of weather-resistant technology at earthen *** on the environmental and weathering characteristics of existing earthen sites in China,the consolidation and failure mechanisms of several weather-resistant measures(penetrating consolidation,sacrifcial layers,soft capping,protective structures,and backflling protection)were *** potential areas to increase the success of the diferent weather-resistant measures were obtained combined with the characteristics of various environmental boundaries.

关键词： Earthen site Weather-resistant measure Environmental adaptability

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