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| 1 | The bulk transfer coefficients and surface fluxes on the western Tibetan Plateau显示文摘On the gradient observational data of the atmospheric surface layer from September 1997 to December 1998 collected by two sets of Automatic Weather Station (AWS) installed in Gaize and Shiquanhe on the western Tibetan Plateau, mean surface roughness lengths at the two stations above are determined to be 2.7 and 2.9 cm, respectively. The bulk transfer coefficients each day are computed by the profile-flux method, means of the bulk transfer coefficient for momentum (i.e. drag coefficient) in 1998 are 4.83×10-3 and 4.75×103 at the two stations. The surface fluxes of momentum, sensible heat and latent heat each day are further estimated by the bulk formulas, annual mean of these fluxes is 3.4×10-2 and 1.8×102N/m2, 73.1 and 67.2 W/m2, 15.4 and 2.9 W/m2, respectively. The diurnal and seasonal variations are obtained by a composite method and the relationships among the heat transfers between land and atmosphere, plateau monsoon and plateau rain season are also discussed. | Guoping Li Tingyang Duan Yuanfa Gong | 2000 | Chinese Science Bulletin2000，45，13： | 13 |
| 2 | Application of Pb isotopic tracing technique to constraining the source of Pb in the West Lake Longjing tea显示文摘This paper dealt with the Pb contents and Pb isotopic composition of the West Lake Longjing tea. The results showed that in the tea leaves, from young leaf →old leaf →tea limb, the Pb contents tend to increase gradu-ally from 1.63 →4.84 →6.07×10-6, wich revealed that the Pb was accumulated gradually in the tea. After cleaned, the Pb contents of tea leaves were significantly reduced. This indicated that the deposits on the surface of tea leaves made a great contributuion to Pb contents. The survey results for soils in the relevant tea gardens showed that soil from the Longjing tea garden has higher Pb contents, with an average level of 49.6×10-6, two times those of common soils (24×10-6) in China. Results of the systematic analysis for tea, tea garden soil and the samples with the relevant background of the Pb isotopic composition displayed that the Pb isotopic ratio of tea is 206Pb/207Pb=1.164±0.005 (2σ). The ratio of 206Pb/207Pb for the soil gradually decreased from residue phase, soil dilute acid extract phase, and then to urban topsoil, i.e., 1.175 →1.171 →1.170. The 208Pb/(206Pb+207Pb) ratios also show a similar variation trend. 206Pb/207Pb ratios in the samples with the relevant background were: vehicle exhaust, 1.124; coal-combustion, 1.156; atmosphere, 1.168; and water, 1.166. Comparative studies have shown that Pb pollution is popular in the environ-mental media (soil, atmosphere, water) in Hangzhou. With the aggravation of Pb pollution, the Pb isotopic composi-tion gradually changed from the natural background (soil residues) to the direction of automobile exhaust. This phe-nomenon could illustrate that the pollution source was the vehicle exhaust, while the coal-combustion contributed little to environmental pollution in Hangzhou. The Pb of the Longjing tea came mostly from soluble phase Pb in the polluted soil. Moreover, secondary pollution was caused by vehicle exhaust. | LU Yuanfa YANG Hongmei MA Liyan CHEN Xiqing WANG Qunying | 2011 | Chinese Journal Of Geochemistry2011，30，4： | 13 |
| 3 | Genesis of Yangla Banded Skarn-Hosted Copper Deposit in Tethys Orogenic Belt of Southwestern China显示文摘INTRODUCTIONTheYanglacopperdepositishostedbybandedskarn,whichwastraditionalyconsideredtohavebeenformedbycontactmetasomaticpro... | Zhan Mingguo Lu Yuanfa Yichang Institute of Geology and Mineral Resources, CAGS, Yichang 443003 Dong Fangliu Department of Geology and Mineral Resources, China University of Geosciences, Beijing 100083 Chen Kaixu Wei Junqi Yichang Institute of | 1999 | Journal of Earth Science1999，18，1： | 6 |
| 4 | Relationship between Atmospheric Heat Source over the Tibetan Plateau and Precipitation in the Sichuan–Chongqing Region during Summer显示文摘NCEP–NCAR reanalysis data and a 47-yr daily precipitation dataset from a network of 42 rain gauges are used to analyze the atmospheric heat source() anomaly over the Tibetan Plateau(TP) and its influence on the summer precipitation anomaly in the Sichuan–Chongqing region. Results show that the vertical advection of over the central TP is a major factor affecting summer precipitation in the Sichuan–Chongqing region. When the vertical advection of over the central TP is strengthened, the South Asian high shifts further than normal to the south and east, the western Pacific subtropical high shifts further than normal to the south and west, and the Indian low weakens. This benefits the transport of warm moist air from the low latitude oceans to the Sichuan–Chongqing region.Correspondingly, in the high latitudes, two ridges and one trough form, which lead to cool air moving southward.These two air masses converge over the Sichuan–Chongqing region, leading to significant precipitation. In contrast,when the vertical advection of over the central TP is weakened, the South Asian high moves to the north and west, the subtropical high moves eastward and northward, and the Indian low strengthens. This circulation pattern is unfavorable for warm air advection from the south to the Sichuan–Chongqing region, and the cool air further north cannot move southward because of the presence of two troughs and one ridge at high latitude. Thus, ascent over the Sichuan–Chongqing region is weakened, resulting in less precipitation. | Xin LAI Yuanfa GONG | 2017 | Journal of Meteorological Research2017，31，3： | 5 |
| 5 | The essential oil components of Cinnamomum cassia: an analysis under different thinning models of plantation Pinus massoniana显示文摘Thinning is an important activity employed in forest management. To date, studies have mainly focused on the effects of thinning on the growth of trees during the same thinning period. In this study, plantation Pinus massoniana Lamb. near maturity were thinned at varying intensities and an economically important species, Cinnamomum cassia Presl., was planted beneath the thinned canopy. The aim of the study was to explore the effects of the extent of thinning on the essential oil content and its components of C. cassia in different parts of the plant, as well as the economic feasibility of the P. massoniana–C.cassia management model. Thinning significantly reduced the oil yield in the bark and branches of C. cassia, but hardly impacted the oil yield from C. cassia leaves compared with pure C. cassia forest(CK). Among the different thinning treatments, both light(T.4) and extensive(T.1)thinning reduced the oil yield of C. cassia bark and new branches. The concentrations of the main aldehydes differed in different parts of the plant and were affected by the extent of thinning. The influence on cinnamaldehyde in the bark was minor, but was much greater in the branches and leaves. Both the oil yield and content of cinnamaldehyde showed that moderate(T.3) thinning was more favorable than other thinning models. These results not only provide a potentially promising model for the transformation of low–yield artificial pure forests of P. massoniana in the future, but also offer a reference for the management of artificial mixed stands. | Dayan Tao Yuanfa Li Daodiao Lu Yehong Luo Sufang Yu Shaoming Ye | 2016 | Journal of Forestry Research2016，27，3： | 5 |
| 6 | Separation of chalcopyrite and pyrite from a copper tailing by ammonium humate显示文摘Copper tailings constitute a large proportion of mine wastes. Some of the copper tailings can be recycled to recover valuable minerals. In this paper, a copper tailing was studied through the chemical analysis method, Xray diffraction and scanning electron microscope-energy dispersive spectrum. It turned out that chalcopyrite(Cu) and pyrite(S) were the main recoverable minerals in the tailing. In order to separate chalcopyrite from pyrite in low pulp pH, ammonium humate(AH) was singled out as the effective regulator. The depression mechanism of AH on the flotation of pyrite was proved by FTIR spectrum and XPS spectrum, demonstrating that there was a chemical adsorption between AH and pyrite. By Response Surface Methodology(RSM), the interaction between AH, pulp pH and iso-butyl ethionine(Z200) was discussed. It was illustrated that the optimal dosage of AH was 1678 g·t^(-1) involving both the recovery of Cu and S. The point prediction by RSM and the closed-circuit flotation displayed that the qualified Cu concentrate and S concentrate could be obtained from the copper tailing.The study indicated that AH was a promising pyrite depressor in the low pulp pH from copper tailings. | Cuicui Lü Yongliang Wang Peng Qian Ya Liu Guoyan Fu Jian Ding Shufeng Ye Yuanfa Chen | 2018 | Chinese Journal of Chemical Engineering2018，26，9： | 5 |
| 7 | Reconstruction of sub cross-correlation cancellation technique for unambiguous acquisition of BOC(kn, n) signals显示文摘In order to solve the problem of ambiguous acquisition of BOC signals caused by its property of multiple peaks,an unambiguous acquisition algorithm named reconstruction of sub cross-correlation cancellation technique(RSCCT)for BOC(kn,n)signals is proposed.In this paper,the principle of signal decomposition is combined with the traditional acquisition algorithm structure,and then based on the method of reconstructing the correlation function.The method firstly gets the sub-pseudorandom noise(PRN)code by decomposing the local PRN code,then uses BOC(kn,n)and the sub-PRN code cross-correlation to get the sub cross-correlation function.Finally,the correlation peak with a single peak is obtained by reconstructing the sub cross-correlation function so that the ambiguities of BOC acquisition are removed.The simulation shows that RSCCT can completely eliminate the side peaks of BOC(kn,n)group signals while maintaining the narrow correlation of BOC,and its computational complexity is equivalent to sub carrier phase cancellation(SCPC)and autocorrelation side-peak cancellation technique(ASPeCT),and it reduces the computational complexity relative to BPSK-like.For BOC(n,n),the acquisition sensitivity of RSCCT is 3.25 dB,0.81 dB and 0.25 dB higher than binary phase shift keying(BPSK)-like,SCPC and ASPeCT at the acquisition probability of 90%,respectively.The peak to average power ratio is 1.91,3.0 and 3.7 times higher than ASPeCT,SCPC and BPSK-like at SNR=–20 dB,respectively.For BOC(2n,n),the acquisition sensitivity of RSCCT is 5.5 dB,1.25 dB and 2.69 dB higher than BPSK-like,SCPC and ASPeCT at the acquisition probability of 90%,respectively.The peak to average power ratio is 1.02,1.68 and 2.12 times higher than ASPeCT,SCPC and BPSK-like at SNR=–20 dB,respectively. | JI Yuanfa CHEN Xiaoqian FU Qiang SUN Xiyan ZHEN Weimin | 2019 | Journal of Systems Engineering and Electronics2019，30，5： | 5 |
| 8 | A Novel Identification of the Polar/Eurasia Pattern and Its Weather Impact in May显示文摘The Polar/Eurasia(POL) pattern was previously identified based on the empirical orthogonal function method and monthly mean data, in which the positive and negative phases are anti-symmetric in spatial distribution. This paper identifies the positive(POL+) and negative(POL-) phases of the POL pattern through applying a novel approach, i.e.,self-organizing maps, to daily 500-h Pa geopotential height fields in May over 1948–2017. The POL+, POL1-, and POL2-patterns defined by this method represent actual physical modes. The POL+ pattern features a wave train from the northeastern Atlantic/northern Europe via the subarctic regions of Eurasia to Lake Baikal. The POL1-pattern is characterized by a planetary-scale dipole pattern with a positive anomaly band over subarctic Eurasia and a negative anomaly band from central Asia to the Sea of Okhotsk. The anomaly centers of the POL2-pattern are basically antisymmetrical to those of the POL+ pattern. The POL+ pattern increases the blocking frequency over the northeastern Atlantic/northern Europe and northeastern Asia, where high-frequency transient eddies are highly recurrent in the north. Accordingly, precipitation increases apparently in the subarctic Asian continent and western Siberia, and decreases around Europe and Lake Baikal. A mimic wave train is also observed in the surface air temperature anomaly field. During the POL1-period, the blocking frequency is abnormally high over Eurasia, whereas high-frequency transient eddies are apparently suppressed over northern Eurasia. Correspondingly, significant precipitation deficits are observed in northern Eurasia. The POL1-pattern also causes a remarkable temperature increase in the subarctic seas of Eurasia and a considerable temperature drop in the midlatitude Asian continent. As the POL2-pattern prevails, the blocking frequency decreases over the North Atlantic/Europe but strengthens over the Asian continent. The POL2-pattern also causes wavelike anomalies of precipitation and surface air temperature over northern Eurasia. | Ni GAO Cholaw BUEH Zuowei XIE Yuanfa GONG | 2019 | Journal of Meteorological Research2019，33，5： | 4 |
| 9 | Spatial pattern dynamics among co-dominant populations in early secondary forests in Southwest China显示文摘The canopy of subtropical natural forests usually consists of several co-dominant populations(CDPs),which play a crucial role in forest structure,formation of the forest environment,and ecological function.However,little attention has been given to changes in spatial patterns in CDPs during natural succession.Cyclobalanopsis glauca(Thunb.)Oerst.,Quercus variabilis Blume,and Pinus yunnanensis var.tenuifolia W.C.Cheng & Y.W.Law are canopy species that form CDPs in zonal forests along the Nanpan River in southwest China.We used the g(r) function and its bivariate distribution model,g_(12)(r),which is based on distances between pairs of points,to explore the dynamics of the three CDP species with respect to distribution patterns and spatial correlations in two secondary forests(one 30-year-old forest [30-YF] and one 57-year-old forest [57-YF]).The following key results were obtained:(1) there was a clumped pattern in the 30-YF,but the intensity of aggregation varied among populations and life stages.The distribution pattern gradually shifted to become random with longer succes sion time(i.e.,30-YF vs.57-YF),expansion of the observation scale(r=0-20 m),and at later life stages.(2) Aside from the mid-sized C.glauca trees and large P.yunnanensis trees,the trees repulsed each other at certain scales(r=0-2,5-6,11-12,14-16 m) in the 30-YF.Almost all of the life stages in the CDPs were independently correlated.This independent correlation was exacerbated by a longer succession time.(3) An increase in life stages and longer succession also promoted independent changes in intraspecific correlations.(4) Intraspecific correlations were stronger than interspecific correlations.Our results showed that reducing exclusive competition is essential to coexistence in CDPs.Inter-and intra-specific repulsion may occur at the same time,but intraspecific repulsion was the main driving force behind the random distributions and independent correlations. | Yuanfa Li Minghui Li Angang Ming Hongxiang Wang Sufang Yu Shaoming Ye | 2021 | Journal of Forestry Research2021，32，4： | 3 |
| 10 | La boratory testing of piezoelectric bridge transducers for as phalt pavement energy harvesting显示文摘 | Ling Yao Hongduo Zhao Zhanyu Dong Yuanfa Gao | | 0，，： | 1 |
| 11 | Adsorption of sulfate ions from squeous solution by surfactant - modified palygorskite 显示文摘 | Rui Dong Yuanfa Liu Xingguo Wang | 2011 | Journal of Chemical&Engineering Data2011，，56： | 1 |
| 12 | Changes in volatile compounds of peanut oil during the roasting pro- cess for production of aromatic roasted peanut oil显示文摘 | Liu Xiaojun Jin Qingzhe Liu Yuanfa | 2011 | Journal of Food Science2011，76，3： | 1 |
| 13 | Adsorption studies of a water soluble dye,Reactive Red MF-3B, using son ication-surfactant-modified attapulgite clay显示文摘 | HUANG Jianhua LIU Yuanfa JIN Qingzhe | 2007 | Journal of Haz- ardous Materials2007，143，12： | 1 |
| 14 | Selective adsorption of tannin from flavonoids by Organically modified attapulgite clay显示文摘 | Jianhua Huang Yuanfa Liu Xingguo Wang | 2008 | J Hazard Mater2008，160，23： | 1 |
| 15 | Comparative analysis of lipid composition and thermal, polymorphic, and crystallization behaviors of granular crystals formed in beef tallow and palm oil 显示文摘 | MENG Zong LIU Yuanfa JIN Qingzhe | 2011 | J Agric Food Chem2011，59，： | 1 |
| 16 | Spatial structure characteristics of three hardwood species in Korean pine broad-leaved forest-Validating the bivariate distribution of structural parameters from the point of tree population 显示文摘 | Li Yuanfa Hui Gangying Zhao Zhonghua | 2014 | Forest Ecology and Management2014，314，： | 1 |
| 17 | Adsorption studies of a water soluble dye,reactive red MF-3B,using sonication-surfactant-modified attapulgite clay显示文摘 | Huang Jianhua Liu Yuanfa Jin Qingzhe | | 0，，1： | 1 |
| 18 | Interpolation Fitting Algorithm in Time-Space Domain of Differential Barometric Altimetry显示文摘In order to overcome the limitations of a unitary reference station in mobile communication positioning network differential barometric altimetry(DBA)and broaden the action scope of the reference station and improve positioning accuracy of elevation,an integrated interpolation algorithm model based on generalized extended approximation(GEA)algorithm and Kriging interpolation in time-space domain of reference station is proposed.In the time domain,barometric measured data is considered the maximum value estimated by bilateral extension to avoid wrong direction of estimation,which is approaching true value.In the spatial domain,barometric relevance among multiple reference stations is utilized,the weighted coefficients of multiple reference stations is calculated by the integrated algorithm model based on the GEA algorithm and Kriging interpolation.The impact of each reference station to the measured station is quantified,so that a virtual reference station is constructed,which can overcome the limitation of barometric correction by a unitary reference station.In addition,the measurement error due to irregular change in atmospheric pressure will be eliminated. | Zhengqun Hu Lirong Zhang Guanyi Ma Yuanfa Ji | 2019 | Journal of Beijing Institute of Technology2019，28，1： | 1 |
| 19 | A comparison of cake properties in traditional and turbulence promoter assisted microfiltration of particulate suspensions显示文摘 | Yuanfa Liu Gaohong He Baojun Li Zhengwen Hu Jia Ju | 2012 | Water Research2012，，8： | 1 |
| 20 | Synthesis and biological activities of alkyl substituted triazolethione Schiff base 显示文摘 | SUN Xiaohong TAO Yan LIU Yuanfa | 2008 | Chinese Journal of Chemistry2008，26，6： | 1 |
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