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Home range variation of two different-sized groups of golden snub-nosed monkeys(Rhinopithecus roxellana) in Shennongjia, China: implications for feeding competition

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Zoological Research 2019年第2期40卷 121-128页

作者： Peng-Lai Fan Yi-Ming Li Craig B.Stanford Fang Li Ze-Tian Liu Kai-Hua Yang Xue-Cong Liu College of Life Sciences University of Chinese Academy of Sciences Institute of Ecology College of Life Sciences Beijing Normal University Key Laboratory of Animal Ecology and Conservation Biology Institute of Zoology Chinese Academy of Sciences Departments of Biological Sciences and Anthropology Jane Goodall Research Center University of Southern California Shennongjia National Park

Knowledge on the home range size of a species or population is important for understanding its behavioral and social ecology and improving the effectiveness of conservation strategies. We studied the home range size of two different-sized groups of golden snub-nosed monkeys(Rhinopithecus roxellana) in Shennongjia, China. The larger group(236 individuals)had a home range of 22.5 km2 from September2007 to July 2008, whereas the smaller group(62 individuals) occupied a home range of 12.4 km2 from November 2008 to July 2009. Both groups exhibited considerable seasonal variation in their home range size, which was likely due to seasonal changes in food availability and distribution. The home range in any given season(winter, spring, summer, or winter+spring+summer) of the larger group was larger than that of the smaller group. As the two groups were studied in the same area, with the confounding effects of food availability thus minimized, the positive relationship between home range size and group size suggested that scramble feeding competition increased within the larger group.

关键词： Rhinopithecus roxellana Home range size Group size Feeding competition

range formula based on angle of dispersion and nozzle configuration from an impact sprinkler

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International Journal of Agricultural and Biological Engineering 2019年第5期12卷 97-105页

作者： Yue Jiang Zakaria Issaka Hong Li Pan Tang Chao Chen Research Centre of Fluid Machinery Engineering and Technology Jiangsu UniversityZhenjiang 212013China Department of Agricultural Engineering Tamale Technical UniversityNorthern RegionTamaleGhana

Jet breakup and dispersion from impact sprinkler are mainly influenced by the configurations of nozzle and dispersion device.Based on the structure,different types of nozzles were designed and tested with a pointed tip dispersion device under low pressure conditions.Experiments were performed using High-Speed Photographic technique,and Matlab computation program was established and applied to determine the initial jet breakup length and angle of dispersion from the nozzles.The sprinkler range decreased with the increase in diameter of nozzle,and the largest range of 15.1 m was produced from sprinkler with 6 mm nozzle size under a pressure of 150 kPa.The angle of dispersion decreased with the increase of jet velocity,the spray coverage from sprinkler with 6 mm nozzle size was 1478 mm under 150 kPa,and was not statistically different when the pressure was increased.A new range formula was established for sprinkler with dispersion device through curve fitting of the parameters of initial jet breakup length,angle of dispersion,nozzle size and working pressure.The new formula was reliable for calculating range with a relative error less than 3%.Since the formula is based on the angle of dispersion,it could be useful to estimate uniformity of water distribution in sprinkler irrigated fields.

关键词： fixed dispersion device range jet breakup angle of dispersion spray coverage impact sprinkler

Spontaneous combustion influenced by surface methane drainage and its prediction by rescaled range analysis

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International Journal of Mining Science and Technology 2018年第2期28卷 215-221页

作者： Shengqiang Yang Xincheng Hu Wei Victor Liu Jiawen Cai Xiuhong Zhou School of Safety Engineering China University of Mining&TechnologyXuzhou 221008China Key Laboratory of Gas and Fire Control for Coal Mines Xuzhou 221008China Department of Civil&Environmental Engineering University of AlbertaEdmonton T6G 2W2Canada

This study established numerical modeling using COMSOLTMto examine the influence of horizontal location and drainage ability of surface borehole on spontaneous combustion in longwall working face gob. Rescaled range Analysis(R/S analysis) was employed to investigate the chaos characteristic of N_2/O_2 ratio from a surface borehole in 10416 working face gob, Yangliu Colliery, China. The simulation results show that there is always a circular ‘‘dissipation zone" around the drainage borehole and an elliptic ‘‘spontaneous combustion zone" in deep gob. Little influence was found on spontaneous combustion zone on the intake side of the gob but the width of spontaneous combustion zone in middle gob is enlarged, while the depth of spontaneous combustion zone near the return side is reduced. The R/S analysis indicates that the influence of surface borehole on spontaneous combustion can be divided into two stages by the chaos feature of N_2/O_2: safety drainage stage and spontaneous combustion initiating stage. It can be concluded that the methane drainage from gob through surface borehole can intervene in the distribution of spontaneous combustion zone in gob and the chaos feature of N_2/O_2 from surface borehole can effectively reflect coal spontaneous combustion condition in gob.

关键词： Coal spontaneous combustion Surface drainage borehole Hurst index Rescaled range analysis Methane drainage Symbiotic disaster

Recognition of Early Paleozoic Magmatisms in the Supposed Proterozoic Basements of Zhalantun, Great Xing’an range, NE China

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Acta Geologica Sinica(English Edition) 2019年第5期93卷 1434-1455页

作者： QIN Tao GUO Rongrong ZANG Yanqing QIAN Cheng WANG Yan SI Qiuliang SUN Wei MA Yongfei College of Earth Sciences Jilin UniversityChangchun 130061China Shenyang Institute of Geology and Mineral Resources Shenyang 110034LiaoningChina Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines Department of GeologyNortheastern UniversityShenyang 110819China

The Zhalantun terrane from the Xing’an massif, northeast China, was used to be considered as Proterozoic basements. However, amounts of detrital zircon ages from the meta-sedimentary rocks deny the existence of Precambrian basements recently. Notably, magmatic rocks were barely reported to limit the exact ages of the Zhalantun basements. In this study, we collected rhyolite, gabbro and quartz diorite for zircon in-situ U-Pb isotopic dating, which yield crystallization ages of ~505 Ma, ~447 Ma and ~125 Ma, respectively. Muscovite schist and siltstone define maximum depositional ages of ~499 Ma and ~489 Ma, respectively. Additionally, these dated supracrustal rocks and plutons also yield ancient detrital/xenocryst zircon ages of ~600-1000 Ma, ~1600-2220 Ma, ~2400 Ma, ~2600-2860 Ma. Based on the whole-rock major and trace element compositions, the ~505 Ma rhyolites display high SiO2 and alkaline contents, low Fe2O3T, TiO2 and Al2O3, and relatively high Mg O and Mg#, which exhibit calc-alkaline characteristics. These rhyolites yield fractionated REE patterns and negative Nb, Ta, Ti, Sr, P and Eu anomalies and positive Zr anomalies. The geochemistry, petrology and Lu-Hf isotopes imply that rhyolites were derived from the partial melting of continental basalt induced by upwelling of sub-arc mantle magmas, and then experienced fractional crystallization of plagioclase, which points to a continental arc regime. The ~447 Ma gabbros exhibit low Si O2 and alkaline contents, high Fe2 O3 T, Ti O2, Mg O and Mg#. They show minor depletions of La and Ce, flat MREE and HREE patterns, and negative Nb, Ta, Zr and Hf anomalies. Both sub-arc mantle and N-MORB-like mantle were involved in the formation of the gabbros, indicative of a probable back-arc basin tectonic setting. Given that, the previously believed Proterozoic supracrustal rocks and several plutons from the Zhalantun Precambrian basements were proved to be Paleozoic to Mesozoic rocks, among which these Paleozoic magmatic rocks were generally related to subduction regime. S

关键词： early Paleozoic magmatism Xinghuadukou Group Jiageda Formation Zhalantun terrane Great Xing’an range Central Asian Orogenic Belt

Origin and evolution of ore-forming fluid for the Gaosongshan gold deposit, Lesser Xing’an range:Evidence from fluid inclusions,H-O-S-Pb isotopes

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Geoscience Frontiers 2019年第5期10卷 1961-1980页

作者： Yang Liu Jinggui Sun Jilong Han Liang Ren Alei Gu Keqiang Zhao Changshen Wang College of Earth Science Jilin UniversityChangchun 130061China Tianjin Center of Geological Survey China Geological SurveyTianjin 300170China Geophysical and Geochemical Prospecting Academy Chinese Academy of Geological SciencesLangfang 065000China Team 707 Heilongjiang Bureau of Geological Exploration for Nonferrous MetalsSuihua 152000China

Epithermal gold deposits are typical precious metal deposits related to volcanic and subvolcanic magmatism.Due to the lack of direct geological and petrographic evidences,the origin of the ore-forming fluid is deduced from the spatial diagenesis-mineralization relationship,chronological data,physicochemical characteristics of mineral fluid inclusions,mineral or rock elements and isotopic geochemical characteristics.By objectively examining this scientific problem via a geological field survey and petrographic analysis of the Gaosongshan epithermal gold deposit,we recently discovered and verified the following points:(1) Pyrite-bearing spherical quartz aggregates (PSQA) occur in the rhyolitic porphyry;(2) the mineralization is structurally dominated by WNW- and ENE-trending systems and occurs mostly in hydrothermal breccias and pyrite-quartz veins,and the ore types are mainly hematite-crusted quartz,hydrothermal breccia,massive pyrite-quartz,etc.;(3) the alteration types consist of prevalent silicification,sericitization,propylitization and carbonation,with local adularization and illitization.The ore minerals are mainly pyrite,primary hematite,native gold,and electrum,with lesser amounts of chalcopyrite,magnetite,sphalerite,and galena,indicating a characteristic epithermal low-sulfidation deposit.The ore-forming fluid may have been primarily derived from magmatic fluid exsolved from a crystallizing rhyolitic porphyry magma.Further zircon U-Pb geochronology,fluid inclusion,physicochemical and isotopic geochemical analyses revealed that (1) rhyolitic porphyry magmatism occurred at 104.6 ± 1.0 Ma,whereas the crystallization of the PSQA occurred at 100.8 ± 2.1 Ma;(2) the hydrothermal fluid of the pre-ore stage was an exsolved CO2-bearing H2O-NaCl magmatic fluid that produced inclusions mainly composed of pure vapor (PV),vapor-rich (WV) and liquid-rich (WL) inclusions with a small number of melt-(M) and solid-bearing (S) inclusions;mineralization-stage quartz contains WL and rare PV,WV and pure liquid (PL) inclusions

关键词： Fluid inclusions H-O-S-Pb isotopes Zircon U-Pb dating Gaosongshan gold deposit Lesser Xing'an range Northeast China

Early Cretaceous Adakitic Rocks in the Northern Great Xing’an range, NE China: Implications for the Final Closure of Mongol-Okhotsk Ocean and Regional Extensional Setting

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Acta Geologica Sinica(English Edition) 2019年第5期93卷 1544-1558页

作者： ZHANG Lingyu LI Shichao CHU Xiaolei SHANG Yinmin College of Earth Sciences Jilin UniversityChangchun 130061China Key Laboratory of Mineral Resources Evaluation in Northeast Asia Ministry of Land and ResourcesChangchun130061China

A large amount of igneous rocks in NE China formed in an extensional setting during Late Mesozoic. However, there is still controversy about how the Mongol-Okhotsk Ocean and the Paleo-Pacific Ocean effected the lithosphere in NE China. In this paper, we carried out a comprehensive study for andesites from the Keyihe area using LA-ICP-MS zircon UPb dating and geochemical and Hf isotopic analysis to investigate the petrogenesis and tectonic setting of these andesites. The U-Pb dating yields an Early Cretaceous crystallization age of 128.3±0.4 Ma. Geochemically, the andesites contain high Sr(686-930 ppm) and HREE contents, low Y(11.9-19.8 ppm) and Yb(1.08-1.52 ppm) contents, and they therefore have high Sr/Y(42-63) and La/Yb(24-36) ratios, showing the characteristics of adakitic rocks. Moreover, they exhibit high K2O/Na2O ratios(0.57-0.81), low Mg O contents(0.77-3.06 wt%), low Mg# value(17-49) and negative εHf(t) values(-1.7 to-8.5) with no negative Eu anomalies, indicating that they are not related to the oceanic plate subduction. Based on the geochemical and isotopic data provided in this paper and regional geological data, it can be concluded that the Keyihe adakitic rocks were affected by the Mongol-Okhotsk tectonic regime, forming in a transition setting from crustal thickening to regional extension thinning. They were derived from the partial melting of the thickened lower crust. The closure of the Mongol-Okhotsk Ocean may finish in early Early Cretaceous, followed by the collisional orogenic process. The southern part region of its suture belt was in a post-orogenic extensional setting in the late Early Cretaceous.

关键词： Mongol-Okhotsk Ocean northern Great Xing’an range Early Cretaceous adakitic rocks lower crust

Tunable range Interactions and Multi-Roton Excitations for Bosons in a Bose-Fermi Mixture with Optical Lattices

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Communications in Theoretical Physics 2019年第7期71卷 869-875页

作者：冯超陈宇 Institute for Advanced Study Tsinghua UniversityBeijing 100084China Department of Physics Capital Normal UniversityBeijing 100048China

In this article,we discuss a method to control the long-range interactions between bosons in a threedimensional Bose-Fermi mixture with the help of optical lattices on fermions.We find the range and the peaked momentum of the fermion-mediated interactions can be tuned by the optical lattice depth and the fermion density.If the fermion density is close to half-filling,roton excitations can be generated with weak Bose-Fermi interactions.Further,if the fermions are not exact at half-filling,multi-roton structure may emerge,implying competing density orders.Therefore,tuning the lattice depth and the fermion density in a Bose-Fermi mixture serves as an effective way to control the interaction range and resonant momentum between bosons.

关键词： Bose-Fermi mixture multi-roton tunable range interaction

Geochronology and Geochemistry of Early Cretaceous Granitic Plutons in the Xing’an Massif, Great Xing’an range, NE China: Petrogenesis and Tectonic Implications

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Acta Geologica Sinica(English Edition) 2019年第5期93卷 1500-1521页

作者： DONG Yu GE Wenchun TIAN Dexin JI Zheng YANG Hao BI Junhui WU Haoran HAO Yujie College of Earth Sciences Jilin UniversityChangchun 130061China Key Laboratory of Mineral Resources Evaluation in Northeast Asia Ministry of Natural ResourcesChangchun 130061China Nonferrous Metals Geological Exploration Bureau of Zhejiang Province ShaoxingZhejiang 312000China Tianjin Center China Geological SurveyTianjin 300170China

In this study, we present zircon U-Pb ages, whole-rock geochemical data and Hf isotopic compositions for the Meiguifeng and Arxan plutons in Xing’an Massif, Great Xing’an range, which can provide important information in deciphering both Mesozoic magmatism and tectonic evolution of NE China. The zircon U-Pb dating results indicate that alkali feldspar granite from Meiguifeng pluton was emplaced at ~145 to 137 Ma, and granite porphyry of Arxan pluton was formed at ~129 Ma. The Meiguifeng and Arxan plutons have similar geochemical features, which are characterized by high silica, total alkalis, differentiation index, with low P2O5, CaO, MgO, TFe2O3 contents. They belong to high-K calc-alkaline series, and show weakly peraluminous characteristics. The Meiguifeng and Arxan plutons are both enriched in LREEs and LILEs(e.g., Rb, Th, U and K), and depleted in HREEs and HFSEs(e.g., Nb, Ta and Ti). Combined with the petrological and geochemical features, the Meiguifeng and Arxan plutons show highly fractionated I-type granite affinity. Moreover, the Meiguifeng and Arxan plutons may share a common or similar magma source, and they were probably generated by partial melting of Neoproterozoic high-K basaltic crust. Meanwhile, plagioclase, K-feldspar, biotite, apatite, monazite, allanite and Ti-bearing phases fractionated from the magma during formation of Meiguifeng and Arxan plutons. Combined with spatial distribution and temporal evolution, we assume that the generation of Early Cretaceous Meiguifeng and Arxan plutons in Great Xing’an range was closely related to the break-off of Mudanjiang oceanic plate. Furthermore, the Mudanjiang Ocean was probably a branch of Paleo-Pacific Ocean.

关键词： geochemistry geochronology Early Cretaceous highly fractionated I-type granite Great Xing'an range

Geology, Mineralization, Fluid Inclusion and Stable Isotope of the Early Cretaceous Sn and Associated Metal Deposits in the Southern Great Xing’an range, NE China: A Review

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Acta Geologica Sinica(English Edition) 2019年第5期93卷 1522-1543页

作者： WANG Chengyang LIU Guanghu SUN Zhenjun LIU Jie LI Jianfeng LIANG Xinyang Institute of Disaster Prevention SanheHebei 065201China College of Urban and Environmental Science Liaoning Normal UniversityDalianLiaoning 116029China

The Southern Great Xing’an range(SGXR) hosts a number of Early Cretaceous Sn and associated metal deposits, which can be divided into three principal types according to their geological characteristics: skarn type deposits, porphyry type deposits and hydrothermal vein type deposits. Fluid inclusion assemblages of different types of deposits are quite different, which represent the complexities of metallogenic process and formation mechanism. CH4 and CO2 have been detected in fluid inclusions from some of deposits, indicating that the ore-forming fluids are affected by materials of Permian strata. Hydrogen and oxygen isotope data from ore minerals and associated gangue minerals indicate that the initial ore fluids were dominated by magmatic waters, some of which had clearly exchanged oxygen with wall rocks during their passage through the strata. The narrow range for the δ34S values presumably reflects the corresponding uniformity of the ore forming fluids, and these δ34S values have been interpreted to reflect magmatic sources for the sulfur. The comparation between lead isotope ratios of ore minerals and different geological units’ also reveals that deeply seated magma has been a significant source of lead in the ores.

关键词： fluid inclusion stable isotope Early Cretaceous Sn and associated metal deposits Southern Great Xing'an range