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| 1 | Hydrophobicity and carbonation treatment of earthen monuments in humid weather condition显示文摘Water stability of soil is crucial to the durability of earthen monuments,especially those located in the humid weather condition.This paper discusses the selection reason of materials(tung oil and quicklime) for earthen monument treatment,and then validates the applicability of these materials with tests of soil-water characteristic curve(SWCC),aggregate stability test(AST) and scanning electron microscope(SEM).The soil tested was sampled from Da Bao'en temple in Nanjing,Jiangsu province,China.The test results indicate that the carbonation reaction of quicklime offers a favorable environment for the formation of tung oil film.Meanwhile,the regulatory function of tung oil restricts the crystallinity of calcium carbonate(CaCO3) and forms fine crystals.Soil treated with both of tung oil and quicklime has good water repellency and aggregate stability without obvious changing in aesthetic appearance.Hydrophobicity and carbonation treatment can be applied prospectively in the conservation of earthen monument located in humid weather condition. | LI Min ZHANG HuYuan | 2012 | Science China(Technological Sciences)2012，55，8： | 7 |
| 2 | Conservation of Jiaohe ancient earthen site in China显示文摘Earthen sites,which are mainly made of earth,are cultural heritages with historical,artistic and scientific values.Many extremely valuable earthen sites have been preserved in the arid areas in China.The earthen site of Jiaohe Ancient City is one of the earliest National Protected Important Cultural Heritage Sites.The Jiaohe Ancient City site exhibits all kinds of deteriorations,which can be found in the earthen sites in arid environments in China.Through a case study of the Jiaohe ancient earthen site,we present in this paper the comprehensive conservation technologies,including the mud bricklaying and reparation,wooden rod anchorage,crack grouting,surface potassium silicate(PS) penetration consolidation,and suspended steel beam ceiling,etc.Results of this case study showed that better conservation effects could be achieved by selecting proper PS penetration and crack grouting processes based on the deterioration characteristics of the earthen sites.The technology of mud bricklaying and reparation was also an effective method for preventing the earthen body from collapsing.Compared with traditional conservation technologies,the suspended steel beam ceiling technology could effectively reduce the negative impacts to the original state of the earthen site.As for unstable cliffs,a new method using composite anchor rod of bamboo and steel with massive loose earth was applied.Deformation monitoring and temporary supports were critical and indispensable measures for the safe of site conservation projects.Through years of monitoring and practical operation at the Jiaohe ancient earthen site,deterioration at the site has been effectively controlled. | Zuixiong Li Xudong Wang Manli Sun Wenwu Chen Qinglin Guo Huyuan Zhang | 2011 | Journal of Rock Mechanics and Geotechnical Engineering2011，3，3： | 6 |
| 3 | State and Potential of Forest Carbon Market in China显示文摘China has been making efforts to improve climate changes which have drawn international attentions since China formally signed UN Climate Change Framework in 1992 and ratified Kyoto Protocol in August 2002. The area of China’s forest plantation ranks the first at present so global close attention is paid to forest carbon market in China. This article introduces that 5 110 million t of carbon dioxide equivalent have been sequestrated by China’s forest during 1980 to 2005, China will have 4.2 billion t of carbon dioxide emission reduction market potential and contribute more forest carbon credits to the international community. | TAN Xiufeng1 ZHOU Fengzhi2 1. Research Institute of Forestry Policy and Information, Chinese Academy of Forestry, Beijing100091, P. R. China 2. Huyuan Forest Farm, Daxing’anling, Huyuan 165033, P. R. China | 2010 | Chinese Forestry Science and Technology2010，9，1： | 4 |
| 4 | Thermogravimetric Kinetic Analysis of PC/ABS/montmorillonite Nanocomposites显示文摘Polycarbonate (PC)/acrylonitrile-butadiene-styrene (ABS) polymer alloy/montmorillonite (MMT)nanocomposites have been prepared using direct melt intedrcalation technique.The thermal oxidative degradation of the polymer alloy and the nanocomposites was studied by thermogravimetric analysis (TC).The kinetic evaluations were performed by the modelfree kinetic analysis and the multvariate nonlinear regression. Apparent kinetic parameters for the overall degradation were calculated. The results show that | ZONGRuo—wen LIYu—zhen HUYuan WANGShao—feng | 2004 | 火灾科学2004，13，2： | 3 |
| 5 | Ethylene Production and 1-Aminocyclopropane-l-Carboxylate (ACC) Synthase Gene Expression in Tomato ( L ycopsicon esculentum Mill.) Leaves Under Enhanced UV-B Radiation显示文摘西红柿(Lycopsicon esculentum 米尔) 在一个温室种的植物与 UV-B 的二个不同层次被照耀,也就是 8.82 (T1 ) 并且 12.6 kJ/m2 每天(T2 ) 。乙烯生产, 1-aminocyclopropane-1-carboxylate (ACC ) 内容, 1-(malonylamino ) cyclopvopane-1-carboxylic 酸(MACC ) 内容, ACC synthase (EC 4.4.1.14 ) 的基因表示,和在西红柿叶子的 ACC oxidase 活动是坚定的。结果显示了那个 ACC 内容, ACC synthase 的活动和 ACC oxidase,并且乙烯生产在 UV-B 放射的低剂量下面连续地增加了,而在放射的高剂量这些参数在开始的 12 d 期间增加了然后开始减少。MACC 内容在 UV-B 照耀的两剂量下面在 18 d 上连续地增加了。在 ACC 内容, ACC synthase 活动, ACC oxidase 活动, ACC synthase 基因的 transcriptional 水平,和乙烯生产的变化与对方一致,建议 ACC synthase 在在 UV-B 放射下面的西红柿叶纸巾是在乙烯生合成和那乙烯生产的关键酶能被 ACC synthase 基因的表示调整。结果也显示在乙烯新陈代谢的变化可以是到提高的 UV-B 放射的适应机制。 | Lizhe An Xiaofeng Xu Hongguan Tang Manxiao Zhang Zongdong HOU Yanhong Liu Zhiguang Zhao Huyuan Feng Shijian Xu Xunling Wang | 2006 | Journal of Integrative Plant Biology2006，48，10： | 2 |
| 6 | Research on deformation mechanism of AZ31 magnesium alloy sheet with non-basal texture during uniaxial tension at room temperature:A visco-plastic self-consistent analysis显示文摘The relationship between activities of involved deformation mechanisms and the evolution of microstructure and texture during uniaxial tension of AZ31 magnesium alloy with a rare non-basal texture has been thoroughly investigated in the present study by means of electron backscattered diffraction(EBSD) measurement and visco-plastic self-consistent(VPSC) modeling. These results show that except basal slip and prismatic slip, {10■2} extension twin(ET) also plays a significant role during plastic deformation. With the increasing tilted angle between loading direction and rolling direction(RD) of sheet, the activity of {10■2} ET possesses a decreasing tendency and its role in plastic deformation changes from the one mainly sustaining plastic strain to the one mainly accommodating local strain between individual grains. When {10■2} ET serves as a carrier of plastic strain, it mainly results in the formation of basal texture component(c-axis//ND, normal direction). By comparison, when the role of {10■2} ET is to accommodate local strain, it mainly brings about the formation of prismatic texture component(c-axis//TD, transverse direction). At large plastic deformation, the competition between basal slip and pyramidal slip is responsible for the concentration of tilted basal poles towards ND within all deformed samples. The larger difference is between the activities of basal slip and pyramidal slip, the smaller separation is between these two tilted basal poles. Besides,VPSC modeling overesttmates volume fractions of {10■2} ET in samples with angle of 0 to 30° between loading direction and RD of sheet because interactions between twin variants are not included in VPSC modeling procedure at the present form. In addition, as compatible deformation between individual grains cannot be considered in VPSC modeling, the predicted volume fractions of {10■2} ET in samples with angle of 45 to 90° between loading direction and RD of sheet are smaller than the correspondingly measured results. | Li Hu Huyuan Lv Laixin Shi Yu Chen Qiang Chen Tao Zhou Mingao Li Mingbo Yang | 2022 | Journal of Magnesium and Alloys2022，10，7： | 2 |
| 7 | Comparing the applications of EMD and EEMD on time-frequency analysis of seismic signal 显示文摘 | Wang Tong Zhang Mingcai Yu Qihao Zhang Huyuan | 2012 | Journal of Applied Geophysics2012，83，： | 1 |
| 8 | Damage and Conservation of the High Cliff on the Northern Area of Dunhuang Mogao Grottoes 显示文摘 | Guo Oinlin Wang Xudong Zhang Huyuan Li Zuix- iong Yang Shanlong | 2009 | China Landslides2009，6，2： | 1 |
| 9 | Removal of ammonia nitrogen in wastewater by microwave radiation显示文摘 | Li Lin Song Huyuan Jing Chen | 2009 | Journal of Hazardous Materials2009，16，1： | 1 |
| 10 | IBA-induced changes in antioxidant enzymes during adventitious rooting in mung bean seedlings: The role of H 2 O 2显示文摘 | Shi-Weng Li Lingui Xue Shijian Xu Huyuan Feng Lizhe An | 2009 | Environmental and Experimental Botany2009，，3： | 1 |
| 11 | Effects of pH and Cl ? concentration on corrosion behavior of the galvanized steel in simulated rust layer solution显示文摘 | Shuan Liu Huyuan Sun Lijuan Sun Huiji Fan | 2012 | Corrosion Science2012，，： | 1 |
| 12 | 显示文摘 | Xu jia-yan Huyuan Songlei | 2001 | Journal of Safety and Environment2001，5，： | 1 |
| 13 | Leachability of heavy metals from solidified sludge显示文摘Solidified sludge undergoes progressive depletion of the alkalinity materials under natural weathering condition and releases out of heavy metals. The leaching of heavy metals from solidified sewage sludge was studied by acid neutralization capacity (ANC) test and flow-through leaching test. The results of ANC test showed that heavy metals release at high concentration when the pH of extract lowers than 6. The disintegration of solidified sludge and the transformation of heavy metals are the main reasons for the resolubilisation of contaminants. Flow-through leaching test indicated that leaching of heavy metals from solidified sludge occurs in a slow way. A mathematical model has been developed to predict the stabilization time of heavy metals in solidified sludge. The research results showed that decreasing hydraulic conductivity is more important than cement addition for controlling the release of heavy metals from solidified sludge. | ZHANG HuYuan WANG Bao DONG XingLing FENG Lei FAN ZhiMing | 2009 | Science China(Technological Sciences)2009，52，7： | 1 |
| 14 | Damage and conservation of the high cliff on the Northern area of Dunhuang Mogao Grottoes,China显示文摘 | Guo Qinglin Wang Xudong Zhang Huyuan | 2009 | Landslides2009，，6： | 1 |
| 15 | Nonexistence of positive supersolutions to a class of semilinear elliptic equations and systems in an exterior domain显示文摘In this paper,we consider the following semilinear elliptic equation:■whereΩis an exterior domain in R^N with N≥3,h:Ω×R^+→R is a measurable function,and derive optimal nonexistence results of positive supersolutions.Our argument is based on a nonexistence result of positive supersolutions of a linear elliptic problem with Hardy potential.We also establish sharp nonexistence results of positive supersolutions to an elliptic system. | Huyuan Chen Rui Peng Feng Zhou | 2020 | Science China Mathematics2020，63，7： | 0 |
| 16 | Seasonal variation of airborne fungi of the Tiantishan Grottoes andWestern Xia Museum,Wuwei,China显示文摘In this study,a systematic survey of cultural airborne fungi was carried out in the occurrence environments of wall paintings that are preserved in the Tiantishan Grottoes and the Western Xia Museum,China.A bio-aerosol sampler was used for sampling in four seasons in 2016.Culture-dependent and-independent methods were taken to acquire airborne fungal concentration and purified strains;by the extraction of genomic DNA,amplification of fungal ITS rRNA gene region,sequencing,and phylogenetic analysis,thereafter the fungal community composition and distribution characteristics of different study sites were clarified.We disclosure the main environmental factors which may be responsible for dynamic changes of airborne fungi at the sampling sites.The concentration of cultural airborne fungi was in a range from 13 to 1,576 CFU/m^(3),no significant difference between the two sites at the Tiantishan Grottoes,with obvious characteristics of seasonal variation,in winter and spring were higher than in summer and autumn.Also,there was a significant difference in fungal concentration between the inside and outside of the Western Xia Museum,the outside of the museum was far more than the inside of the museum in the four seasons,particularly in the winter.Eight fungal genera were detected,including Cladosporium,Penicillium,Alternaria,and Filobasidium as the dominant groups.The airborne fungal community structures of the Tiantishan Grottoes show a distinct characteristic of seasonal variation and spatial distribution.Relative humidity,temperature and seasonal rainfall influence airborne fungal distribution.Some of the isolated strains have the potential to cause biodeterioration of ancient wall paintings.This study provides supporting information for the pre-warning conservation of cultural relics that are preserved at local sites and inside museums. | YuLong Duan FaSi Wu DongPeng He RuiHong Xu HuYuan Feng Tuo Chen GuangXiu Liu WanFu Wang | 2021 | Research in Cold and Arid Regions2021，13，6： | 0 |
| 17 | Current Situation and Challenges of Plantation Development in China显示文摘The area of plantation in China ranks the first in the world. But, many challenges are still faced in the development of China’s plantation. A review of plantation in China was presented and the challenges were analyzed. The plantation features juvenile and middle age class with low diameter at breast height. There are the risks of pests and diseases in plantation, the potential decline in land fertility and bio-diversity, all of which are unfavorable to a healthy development of plantations. | TAN Xiufeng1 ZHOU Fengzhi2 1. Research Institute of Forestry Policy and Information, Chinese Academy of Forestry, Beijing 100091, P. R. China 2. Huyuan Forest Farm, Daxing’anling, Heilongjiang, Huzhong 165033, P. R. China | 2009 | Chinese Forestry Science and Technology2009，8，4： | 0 |
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