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| 1 | Genesis of the Wulong gold deposit,Liaoning Province,NE China:Constrains from noble gases,radiogenic and stable isotope studies显示文摘TheWulong lode deposit contains over 80 tonnes of gold with an average grade of 5.35 g/t.It is one of the largest deposits in Dandong City,Liaoning Province in northeast China.Previous studies on the deposit focused on its geological characteristics,geochemistry,fluid inclusions,and the timing of gold mineralization.However,controversy remains regarding the origin of the ore-forming fluids and metals,and the genesis of the gold deposit.This paper presents zircon UePb and pyrite RbeSr ages and S,Pb,He,and Ar isotopic results along with quartz H and O isotopic data for all litho-units associated with the deposit.Laser ablation inductively coupled mass spectrometry measurements yielded zircon UePb dates for samples of pre-mineralization rocks like granite porphyry dike,the Sanguliu granodiorite,fine-grained diorite,and syn-mineralization diorite,as well as post-mineralization dolerite,and lamprophyre;their emplacement ages are 1261 Ma,1241 Ma,1231 Ma,1201 Ma,1192 Ma,and 1152 Ma,respectively.The pyrite RbeSr isochron age is 1191 Ma,indicating that both magmatism and mineralization occurred during the Early Cretaceous.The d18OH2O values of ore-forming hydrothermal fluids from the quartzepolymetallic sulfide vein stage vary from 4.8&to 6.5&,and the dDV-SMOW values are between67.7&and75.9&,indicating that the ore-forming fluids were primarily magmatic.The noble gas isotope compositions of fluid inclusions hosted in pyrite suggest that the ore-forming fluids were dominantly derived from crustal sources with minor mantle input.Sulfur isotopic values of pyrite vary between 0.2&and 3.5&,suggesting that S was derived from a homogeneous magmatic source or possibly from fluids derived from the crust.The Pb isotopic compositions of sulfides(207Pb/204Pb?15.51 e15.71,206Pb/204Pb?17.35e18.75,208Pb/204Pb?38.27e40.03)indicate that the Pb of the Wulong gold deposit is a mixture of crust and mantle components.Geochronological and geochemical data,together with the regional geological history,indicate that Early Cretaceous magmatism and mineralization of the Wulong gold deposit occurred during the rollback of the subducting Paleo-Pacific Plate,which resulted in lithospheric thinning and the destruction of the North China Craton(NCC),which indicates that the deposit is of magmaticehydrothermal origin. | Peng Zhang Linlin Kou Yan Zhao Zhongwei Bi Deming Sha Renping Han Zhumin Li | 2020 | Geoscience Frontiers2020，11，2： | 13 |
| 2 | Modeling the influence of forced ventilation on the dispersion of droplets ejected from roadheader-mounted external sprayer显示文摘In order to reveal the influence of forced ventilation on the dispersion of droplets ejected from roadheader-mounted external sprayer,the paper studies the air-flowing field and the droplet distribution under the condition of gentle breeze and normal forced ventilation in heading face using the particle tracking technology of computational fluid dynamics(CFD).The results show that air-flowing tendency in the same section presents great comparability in the period of gentle breeze and forced ventilation,and the difference mainly embodies in the different wind velocity.The influence of ventilation on the dispersion of droplets is faint under the gentle breeze condition.The droplet can be evenly distributed around the cutting head.However,under the normal forced ventilation,a large number of droplets will drift to the return air side.At the same time,droplet clusters are predominantly presented in the lower part of windward side and the middle of the leeward side around the cutting head.In contrast,the droplet concentration in other parts around cutting head decreases a lot and the droplets are unable to form close-grained mist curtain.So the dust escape channel is formed.In addition,the simulation results also reveal that the disturbance of air flow on the droplet distribution can be effectively relieved when using ventilation duct with Coanda effect(VDCE).Field experiment results show that the dust suppression efficiency of total dust and respirable dust increases respectively by 10.5%and 9.3%when using VDCE,which proves that it can weaken the influence of airflow on droplet dispersion. | Han Fangwei Wang Deming Jiang Jiaxing Zhu Xiaolong | 2014 | International Journal of Mining Science and Technology2014，24，1： | 10 |
| 3 | Plantations of native shrub species restore soil microbial diversity in the Horqin Sandy Land, northeastern China显示文摘Caragana microphylla Lam., a leguminous shrub species, plays an important role in revegetation in the degraded ecosystems of the Horqin Sandy Land, Northeastern China. Large areas planted with this shrub have been artificially established as sand binders for soil protection, which might change the composition of soil bacterial communities with the development of sand dune stabilization. In this paper, we investigated the diversity and composition of native soil bacterial communities in the C. microphylla plantation for sand fixation using polymerase chain reaction with denaturing gradient gel electrophoresis(PCR-DGGE) to understand the influence of this plantation on sandy soil ecosystem development. We collected soil samples from plantations with an age sequence of 0, 9, 16, and 26 years, as well as from the natural community, to identify the differences among soil bacterial communities. The result showed that bacterial abundance and community composition in the sandy land were affected by the age of the C. microphylla plantation. Moreover, bacterial diversity decreased with increasing plantation age, and the composition of the bacterial community in the 26-year plantation was similar to that in the natural community. Phylogenetic analysis of bands excised from the DGGE gels showed that members of alpha Proteobacterium, gamma Proteobacterium, Gemmatimonadetes and Chloroflexi were dominant in the sandy land. The stabilization of moving sand dune and development of sand-fixed plantation resulted in an increase of soil fertility, which could drive the structural evolvement of soil bacterial community, and it needs over 20 years for the soil bacterial community to form a stable structure, similar to the case for the natural vegetation. | DeMing JIANG ChengYou CAO Ying ZHANG ZhenBo CUI XiaoShu HAN | 2014 | Journal of Arid Land2014，6，4： | 5 |
| 4 | A new design of foam spray nozzle used for precise dust control in underground coal mines显示文摘In order to improve the utilization rate of foam,an arc jet nozzle was designed for precise dust control.Through theoretical analysis,the different demands of foam were compared amongst arc jets,flat jets and full cone jets when the dust source was covered identically by foam.It is proved that foam consumption was least when an arc jet was used.Foam production capability of an arc jet nozzle under different conditions was investigated through experiments.The results show that with the gas liquid ratio(GLR)increasing,the spray state of an arc jet nozzle presents successively water jet,foam jet and mist.Under a reasonable working condition range of foam production and a fixed GLR,foam production quantity increases at first,and then decreases with the increase of liquid supply quantity.When the inner diameter of the nozzle is 14 mm,the best GLR is 30 and the optimum liquid supply quantity is0.375 m^3/h.The results of field experiments show that the total dust and respirable dust suppression efficiency of arc jet nozzles is 85.8%and 82.6%respectively,which are 1.39 and 1.37 times higher than the full cone nozzles and 1.20 and 1.19 times higher than the fiat nozzles. | Han Fangwei Wang Deming Jiang Jiaxing Zhu Xiaolong | 2016 | International Journal of Mining Science and Technology2016，26，2： | 4 |
| 5 | Spatial structure and species composition of soil seed banks in moving sand dune systems of northeast China显示文摘Soil seed banks can provide a mechanistic for understanding the recruitment dynamics and can inform conservation management of ecosystems. To investigate the contribution of soil seed banks to vegetation restoration in moving sand dune systems, we compared seed structure and species similarity between soil seed banks and standing vegetation among moving sand dunes, ecotones and dune slacks in northeast China. Average seed density in dune slacks was greater than in ecotones or moving sand dunes.Seed density in the soil layer of 0–10 cm was greater than at 10–20 cm both in the moving sand dunes and the ecotones, but seed densities were similar at depths of 10–20and 20–30 cm in moving sand dunes. Moreover, the spatial autocorrelation of seed density on moving sand dunes was weak but was strong on the ecotones and dune slacks. The species in the soil seed bank of moving sand dune systems were nearly all annuals, and the low similarity was mainly due to the lack of perennial species that were common in standing vegetation. Consequently, vegetation restoration cannot mainly rely on the soil seed banks in the movingsand dunes and more attention should be paid to protection of the dune slacks because they are the main source of seed disperse and seedling recruitment in moving sand dune systems. | Chunping Miao Xuehua Li Meiyu Jia Xu Han Deming Jiang | 2016 | Journal of Forestry Research2016，27，1： | 2 |
| 6 | Effect of ultrasonic power on microstrueture and mechanical properties of AZ91 alloy 显示文摘 | Gao Deming Li Zhijun Han Qingyou | 2009 | Materials Science and Engineering A2009，502，： | 1 |
| 7 | Optimization of carotenoids extraction from Rhodobactersphaeroides显示文摘 | GuZhenxin Chen Deming Han Yongbin etal | 2008 | Swiss Soci- ety of Food Science and Technology2008，41，7： | 1 |
| 8 | Effect of ultrasonic power on microstructure and mechanical properties of AZ91 alloys显示文摘 | GAO Deming LI Zhijun HAN Qingyou | 2009 | Materials Science and Engineering2009，502，1： | 1 |
| 9 | Securitization and Bank's Equity Risk 显示文摘 | Deming Wu Jiawen Yang Han Hong | 2011 | Journal of Financial Services Research2011，，39： | 1 |
| 10 | Theoretical study of molecular structures and properties of the complete series of chlorophenols 显示文摘 | Han J Deming R L Tao F M | 2004 | Journal of Physical Chemistry A2004，108，38： | 1 |
| 11 | The information content of Basel III liquidity risk measures显示文摘 | Han Hong Jing-Zhi Huang Deming Wu | 2014 | Journal of Financial Stability2014，，： | 1 |
| 12 | Effect of ultrasonic power on microstructure and mechanical properties of AZ91 alloy 显示文摘 | Gao Deming Li Zhijun Han Qingyou | 2009 | Materials Science and Engineering A2009，502，： | 1 |
| 13 | Application of foam to suppress rock dust in a large cross-section rock roadway driven with roadheader显示文摘 | Hetang Wang Deming Wang Wanxing Ren Xinxiao Lu Fangwei Han Yikun Zhang | 2013 | Advanced Powder Technology2013，，1： | 1 |
| 14 | Effect of ultrasonic power on microstructure and mechanical properties of AZ91 alloys显示文摘 | Gao Deming Li Zhijun Han Qingyou | 2009 | Materials Science and Engineering: A2009，502，12： | 1 |
| 15 | Application of statistical methodology to the optimization of fermentative medium for carotenoids production by Rhodobacter sphaeroides显示文摘 | Chen Deming Han Yonbin Gu Zhenxin | 2006 | Process Biochemistry2006，41，： | 1 |
| 16 | Optimization of carotenoids extraction from Rhodobacter sphaeroides 显示文摘 | Gu Zhenxin Chen Deming Han Yongbin | 2008 | LWT2008，41，： | 1 |
| 17 | Effect of ultrasonic power on microstructure and mechanical properties of AZ91 alloy显示文摘 | Deming Gao Zhijun Li Qingyou Han Qijie Zhai | 2009 | Materials Science & Engineering A2009，，1： | 1 |
| 18 | Application of statisticalmethodology to the optimization of fermentative medium for carotenoids production by Rhodobacter sphaeroides显示文摘 | Deming Chen Yonbin Han Zhenxin Gu | 2006 | Process bio- chemistry2006，41，： | 1 |
| 19 | Theoretical study of molecular structures and properties of the complete series of chlorophenols 显示文摘 | HAN J DEMING R L TAO F M | 2004 | The Journal of Physical Chemistry2004，108，38： | 1 |
| 20 | 2001 Systematic relationship of 10 Chinese gecko species based on the 12S ribosomal RNA gene显示文摘 | Han Deming Zhou Kaiya Wang Yiquan | 2001 | Chinese Journal of Animal2001，47，2： | 1 |
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