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Interaction effects of flotation reagents for SAG mill reject of copper sulphide ore using response surface methodology 认领 引用 被引量：7
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作者 Ali AHMADI Mojtaba REZAEI Seyed Mohammad SADEGHIEH 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2021年第3期792-806,共15页
Flotation reagents have a complex behaviour in the beneficiation of base minerals in clayey ores.Interaction effects of reagents on the efficiency of copper flotation for a highly clayey low-grade sulphide ore were in... Flotation reagents have a complex behaviour in the beneficiation of base minerals in clayey ores.Interaction effects of reagents on the efficiency of copper flotation for a highly clayey low-grade sulphide ore were investigated using a central composite design.Preliminary results showed that sodium-isopropyl-xanthate(SIPX)and O-isopropyl-N-ethyl-thionocarbamate(IPETC)were found to be the most efficient collectors in the presence of lime as the pH regulator.The effects of dosage of collectors(SIPX and IPETC)and the dosage of methyl-isobutyl-carbonyl(MIBC)as frother on the separation efficiency were evaluated at different pH levels.Based on the analysis of variance(ANOVA),the interaction effects of the collector−pH and collector−frother were significant for the separation efficiency.At the low level of collector dosage,increasing pH from 9 to 11 enhanced copper separation efficiency from 81%to 86%for IPETC and from 77%to 86%for SIPX.Results of ANOVA showed that the maximum copper separation efficiency(88.7%)was obtained at the dosages of 8.6 g SIPX,7 g IPETC and 20 g MIBC at pH 11.Finally,it was concluded that a mixture of SIPX and IPETC collectors was more suitable to treat highly clayey sulphide ores. 展开更多
关键词 flotation copper sulphide reagent interaction effect reject ore
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A Hydrodynamic Model for Dimpled Mechanical Gas Seal Considering Interaction Effect 认领 引用 被引量：1
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作者 时礼平 黄巍 王晓雷 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2015年第4期438-445,共8页
The mechanical gas seal of aero engine has to face the problems of high wear rate and short lifetime.Surface texture has shown beneficial effects over the tribological characteristics.Here,a hydrodynamic model for dim... The mechanical gas seal of aero engine has to face the problems of high wear rate and short lifetime.Surface texture has shown beneficial effects over the tribological characteristics.Here,a hydrodynamic model for dimpled annular area of mechanical gas seal considering the″interaction effect″between adjacent dimples is developed based on the Reynolds equation.Different multi-row columns are chosen and the dimensionless pressure in radial and circumferential directions is calculated.The results indicate that the″interaction effect″is more obvious in the circumferential direction than in the radial direction,even when the area and depth of the dimples are same.Moreover,for the 5×5column,the dimensionless average pressure considering the″interaction effect″increases by45.41% compared with the 1×5column.Further analysis demonstrates that the model with the 5×5column can be more reasonable with the consideration of reducing the calculation error caused by boundary conditions to investigate the hydrodynamic effect for dimpled mechanical gas seal. 展开更多
关键词 surface texture mechanical gas seal hydrodynamic effect interaction effect aero engine
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Analysis on Interaction Effects Between Variety and Site of Silage Maize Regional Test in Guizhou Province 认领 引用 被引量：1
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作者 SHU Zhong-bing GOU Xiao-song +2 位作者 CHEN Lang WANG Chun-mei REN Hong 《Agricultural Science & Technology》 CAS 2022年第1期11-16,共6页
Taking the yield in the second group of Guizhou silage maize regional test in 2019 as data information, 8 experimental sites and 12 silage maize varieties as experimental objects, the interaction effect between gene a... Taking the yield in the second group of Guizhou silage maize regional test in 2019 as data information, 8 experimental sites and 12 silage maize varieties as experimental objects, the interaction effect between gene and environment was analyzed by using AMMI model. The results showed that the average fresh weight yield of each variety was 3 199.5~3 976.6 kg/667m2, among them, 5 varieties had an increase in the yield. Variety variation accounted for 10.51% of the total variation;experimental site variation accounted for 63.22% of the total variation;interaction effect variation between gene and environment accounted for 26.28% of the total variation;IPCA1 and IPCA2 variation accounted for 50.7% and 31.2% of the interaction variation, respectively;IPCA3 variation accounted for 7.25% of the interaction variation. g_4, g_8, g_9, g_10, g_11 and g_12 had better adaptability to e_1, e_2, e_6 and e_7;while g_1, g_2, g_3, g_5, g_6 and g_7 had better adaptability to e_3, e_4, e_5 and e_8. In consideration of yield, g_1(Huinongqing 2) and g_9(Xinyu 666) were silage maize varieties with high and stable yield;g_3(Hemuyu 905), g_8(Wuhuayu 3) and g_11(Liangdu 191) had general stability, and their yield was higher than that of the control;g_12(Jinduyu 999) had the worst stability and low yield. 展开更多
关键词 Silage maize AMMI model Gene Environment Interaction effect
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Interaction effects on heat conduction and thermal stress in an infinite elastic plane with two circular holes 认领 引用
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作者 Kun SONG Deshun YIN +1 位作者 Haibing YANG P.SCHIAVONE 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2021年第2期223-234,共12页
Numerous researches have focused on the physical behavior of an elastic material in the vicinity of a single hole under the assumption that the interaction effects arising from the introduction of multiple holes remai... Numerous researches have focused on the physical behavior of an elastic material in the vicinity of a single hole under the assumption that the interaction effects arising from the introduction of multiple holes remain negligible if the holes are placed sufficiently far from each other.In an effort to understand hole interaction effects on heat conduction and thermal stress,we consider the case when two circular holes are embedded in an infinite elastic material and use complex variable methods together with numerical analysis to obtain solutions describing temperature and elastic fields in the vicinity of the two circular holes.The results indicate that the interaction effects on temperature distribution and stress strongly depend on the relative size of the two holes and the distance placed between them but not on the actual size of the holes. 展开更多
关键词 heat conduction temperature field thermal stress interaction effect two circular holes
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Strong Interaction Effect on Jet Energy Loss with Detailed Balance 认领 引用
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作者 Jing-Ya Zhang Luan Cheng 《Chinese Physics Letters》 SCIE EI CAS CSCD 2017年第10期18-22,共5页
The strong force effect on gluon distribution of quark-gluon plasma and its influence on jet energy loss with detailed balance are studied. We solve the possibility equation and obtain the value of non-extensive param... The strong force effect on gluon distribution of quark-gluon plasma and its influence on jet energy loss with detailed balance are studied. We solve the possibility equation and obtain the value of non-extensive parameter q. In the presence of strong interaction, more gluons stay at low-energy state than the free gluon case. The strong interaction effect is found to be important for jet energy loss with detailed balance at intermediate jet energy. The energy gain via absorption increases with the strong interaction. This will affect the nuclear modification factor RAA and the parameter of q at intermediate jet energy. 展开更多
关键词 Strong Interaction Effect on Jet Energy Loss with Detailed Balance QCD
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STUDY ON THE STABILITY AND STACKING INTERACTION EFFECT OF THE TERNARY M(Ⅱ)(ATP)AND PYRIDINE-LIKE LIGANDS 认领 引用
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作者 Bin SONG Jie ZHANG Fu Hai WU Liang Nian JI Biotechnology Research Center,Chemistry Department Zhongshan University,Guangzhou 510275 《Chinese Chemical Letters》 SCIE EI CAS 1993年第12期1097-1100,共4页
The stabilities of the complexes of three pyridine-like ligands with M(II)(ATP)2- and M(II)(M=Ni,Co)were studied by spectrophotometry and by comparing the stability constants of the ternary complexes with these of ... The stabilities of the complexes of three pyridine-like ligands with M(II)(ATP)2- and M(II)(M=Ni,Co)were studied by spectrophotometry and by comparing the stability constants of the ternary complexes with these of the binary complexes.A stacking interaction between the pyridine ring and the purine ring of ATP is indicated.The general existence of the stacking interaction encourages us to interpret the antitumor mechanism of a new class of antitumor drugs. 展开更多
关键词 ATP)AND PYRIDINE-LIKE LIGANDS STUDY ON THE STABILITY AND STACKING INTERACTION EFFECT OF THE TERNARY M
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A numerical investigation on interaction effects between two underwater vehicles in close proximity 认领 引用
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作者 Zi-Qiang Zheng Lu Zou +1 位作者 Xuan Wang Zao-Jian Zou 《Journal of Ocean Engineering and Science》 SCIE CSCD 2026年第2期345-361,共17页
Underwater vehicles operating in close proximity suffer from significant hydrodynamic interactions,espe-cially when there is a prominent vehicle size disparity.To gain profound insights into the physical mech-anisms o... Underwater vehicles operating in close proximity suffer from significant hydrodynamic interactions,espe-cially when there is a prominent vehicle size disparity.To gain profound insights into the physical mech-anisms of interaction effects,this paper investigates the hydrodynamic interactions between a submarine model(SUBOFF)and a much smaller Unmanned Underwater Vehicle(UUV)model using the Reynolds Averaged Navier-Stokes(RANS)method.Firstly,the resistance of SUBOFF is predicted for Verification and Validation(V&V)purpose,from which satisfactory numerical accuracies are achieved.Subsequently,hydrodynamic forces and moments on the two vehicles are predicted,considering 60 layouts with different relative vehicle positions.The simulated flow fields indicate that remarkable impacts on the UUV longitudinal force are due to the distinct flow disturbances and shelter effects caused by the submarine sail.In general,the presence of submarine causes considerable flow variations,resulting in notable vertical forces and pitch moments on UUV.The results further suggest that placing the UUV above the SUBOFF middle-body in a limited region is more favorable.Finally,it is found that keeping the UUV pitch angle below 2°is helpful to avoid apparent increases in vertical force and pitch moment on UUV. 展开更多
关键词 Interaction effects Underwater vehicles Position layout Hydrodynamic quantities Flow field analysis Factor interpolation
Risk factors and interaction analysis of severe diastasis recti abdominis within 6 months postpartum 认领 引用
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作者 SHAN Hongjie XIAO Min +1 位作者 CHEN Chao GAO Hong 《中南大学学报（医学版）》 CAS CSCD 北大核心 2026年第3期459-469,共11页
Objective:Severe diastasis recti abdominis(DRA)in the postpartum period may lead to long‑term functional impairment in women.However,the independent effects and interactions of perinatal risk factors during the early ... Objective:Severe diastasis recti abdominis(DRA)in the postpartum period may lead to long‑term functional impairment in women.However,the independent effects and interactions of perinatal risk factors during the early postpartum recovery window have not been fully elucidated.This study aims to analyze the risk factors and interaction effects associated with severe postpartum DRA and to identify characteristics of high‑risk populations.Methods:This retrospective cohort study included postpartum women who underwent postpartum rehabilitation treatment at Hengyang Maternal and Child Health Hospital between January 2019 and August 2022,with a postpartum interval of 42 to 180 d.The inter-rectus distance was measured using palpation combined with caliper assessment.According to the inter-rectus distance,participants were divided into 4 groups:A severe DRA group(separation distance≥4 cm),a moderate DRA group(3.0 to 3.9 cm),a mild DRA group(2.0 to 2.9 cm),and a normal group(<2 cm).The moderate DRA,mild DRA,and normal groups were combined as the control group.Receiver operating characteristic(ROC)curve analysis was used to evaluate continuous variables and determine optimal cutoff values for stratification.The chi-square test was used to compare differences in influencing factors between the severe DRA group and the control group.Binary Logistic regression analysis was further performed to investigate the effects of various factors on severe DRA,and interaction analysis within the binary Logistic regression model was used to identify high-risk populations.Results:A total of 525 postpartum women were ultimately included,including 112 in the severe DRA group,257 in the moderate DRA group,98 in the mild DRA group,and 58 in the normal group.The overall incidence of DRA was 89.0%,while the incidence of severe DRA was 21.3%.The diagnostic cutoff values for body mass index(BMI),neonatal birth weight,and gestational weight gain were 22.55 kg/m2,3350 g,and 12.25 kg,respectively.Participants with BMI≥22.55 kg/m2,neonatal birth weight≥3350 g,gestational weight gain≥12.25 kg,multiparity,cesarean delivery,or number of fetuses≥2 had significantly higher incidences of severe DRA(all P<0.05).Binary Logistic regression analysis showed that neonatal birth weight≥3350 g,gestational weight gain≥12.25 kg,cesarean delivery,and multiparity were independent risk factors for severe DRA(all P<0.05).The interaction among neonatal birth weight≥3350 g,multiparity,and cesarean delivery showed the strongest association with severe DRA(OR=7.10,95%CI 3.43 to 14.71).When all 3 risk factors were present simultaneously,the incidence of severe DRA reached 61.76%.Conclusion:Neonatal birth weight≥3350 g,gestational weight gain≥12.25 kg,cesarean delivery,and multiparity are important independent risk factors for severe postpartum DRA,and significant synergistic amplification effects exist among these factors.This study clarified the characteristics of high-risk populations and may provide a basis for targeted early screening and intervention. 展开更多
关键词 diastasis recti abdominis 6 months postpartum risk factors interaction effects cesarean section multiparity
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How interactions between buildings and green spaces influence urban thermal environments across local climate zones 认领 引用
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作者 Donghui Bai Chunping Miao +2 位作者 Wei Cao Zhe Zhang Yu Guan 《Ecological Frontiers》 CSCD 2026年第1期401-411,共11页
Local Climate Zones(LCZs)provide a standardized framework for analyzing urban thermal environment.Examining the interactive effects of building and green space patterns on land surface temperature(LST)within LCZs is e... Local Climate Zones(LCZs)provide a standardized framework for analyzing urban thermal environment.Examining the interactive effects of building and green space patterns on land surface temperature(LST)within LCZs is essential for uncovering urban cooling mechanisms and developing strategies for heat-mitigation urban design.Therefore,this study employed one-way ANOVA and Duncan's multiple comparison to test compare the significant differences of LST among LCZs 1-6,and applied the XGBoost model to quantify the interactive effects of building and green space indicators on LST,and to identify the threshold ranges of their cooling effects.The results showed that LCZ 2 exhibited the highest LST,while LCZ 4 recorded the lowest.Average building volume(BAV),building coverage ratio(BCR),green cover area(GCA),and the total edge length of green space(GTE)were identified as the key indicators driving the interactive effects on LST.In LCZ 2,when BAV exceeded 1800 m3,the interaction of higher GCA and GTE contributed to lower LST.When BCR was less than 0.6 in LCZs 4-5,lower GCA and GTE values enhanced the LST reduction.The results provided a strategic basis for urban thermal environment mitigation and sustainable development under the LCZ framework. 展开更多
关键词 Building morphology Green spaces LST LCZ Interaction effect
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INTERACTION MODELS FOR EFFECTIVE THERMAL AND ELECTRIC CONDUCTIVITIES OF CARBON NANOTUBE COMPOSITES 认领 引用 被引量：6
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作者 Fei Deng Quanshui Zheng 《Acta Mechanica Solida Sinica》 SCIE EI 2009年第1期1-17,共17页
The present article provides supplementary information of previous works of analytic models for predicting conductivity enhancements of carbon nanotube composites.The models,though fairly simple,are able to take accou... The present article provides supplementary information of previous works of analytic models for predicting conductivity enhancements of carbon nanotube composites.The models,though fairly simple,are able to take account of the effects of conductivity anisotropy,nonstraightness,and aspect ratio of the CNT additives on the conductivity enhancement of the composite and to give predictions agreeing well with existing experimental data.The omitted detailed derivation of this model is demonstrated in the present article with a more systematical analysis,which may help with further development in this direction.Furthermore,the effects of various orientation distributions of CNTs are reported here for the first time.The information may be useful in design or fabrication technology of CNT composites for better or specified conductivities. 展开更多
关键词 thermal conductivity electric conductivity carbon nanotube composite interaction effective models
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Effects of the Interaction between Hydroxyapatite Nanoparticles and Hepatoma Cells 认领 引用 被引量：1
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作者 尹美珍 XU Weiguo +4 位作者 CUI Bingcun 戴红莲 HAN Yingchao YIN Yixia LI Shipu 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2014年第3期635-642,共8页
To gain a better understanding of the anticancer effects of hydroxyapatite （HAP） nanoparticles in vivo and in vitro, the effects of the interaction of HAP nanoparticles with hepatoma cells were explored. HAP nanopar... To gain a better understanding of the anticancer effects of hydroxyapatite （HAP） nanoparticles in vivo and in vitro, the effects of the interaction of HAP nanoparticles with hepatoma cells were explored. HAP nanoparticles were prepared by homogeneous precipitation and characterized by laser particle analysis and transmission electron microscopy （TEM）. HAP nanoparticles were observed to be uniformly distributed, with rod-like shapes and diameters in the range of 42.1-87.1 nm. Overnight attached, suspended, and proliferating Bel-7402 cells were incubated with HAP nanoparticles. Inverted microscopy observation revealed that HAP nanoparticles with a cell membrane showed good adsorption. TEM demonstrated that HAP nanoparticles were present on the surface of cells, continuously taken up by cells through endocytosis, and transported in vesicles close to the nucleus. Fluorescence microscopy showed that the concentrations of intracellular Ca2＋ labeled with Fluo-3 calcium fluorescent probe were significantly enhanced. In addition, inverted microscopy observation revealed that suspended cells treated with HAP nanoparticles did not adhere to the culture bottle, resulting in cell death. After the overnight attached cells were treated with HAP nanoparticles for 96 h with increasing doses of HAP nanoparticles, inverted microscopy observation revealed that cell proliferation was slowed and ceU-ceU adhesion was weakened. Feulgen staining and image analysis indicated that the nuclear DNA content of the cells was markedly reduced, and argyrophilic nucleolar organizer region （AgNOR） staining and image analysis indicated that the number of AgNORs was significantly decreased. Therefore, hepatoma cells brought about the adsorption, uptake, transport and degradation of HAP nanoparticles. In addition, HAP nanoparticles affected hepatoma cells with regard to cell-cell adhesion, cell and extracellular matrix adhesion, and DNA and protein synthesis; thus inhibiting cell proliferation. This understanding of the effects of interaction between HAP nanoparticles and hepatoma cells is useful for further study of the anticancer mechanisms of HAP nanoparticles. 展开更多
关键词 hydroxyapatite nanoparticles hepatoma cells interaction effects cell adhesion
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Interaction between cracks and effect of microcrack zone on main crack tip 认领 引用
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作者 夏晓舟 章青 +1 位作者 乔丕忠 李丽娟 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2010年第1期67-76,共10页
Mechanism interaction between cracks with different orientation angles is analyzed based on the principle of superposition and a flattening method. It is found that the maximum interaction effect does not occur when t... Mechanism interaction between cracks with different orientation angles is analyzed based on the principle of superposition and a flattening method. It is found that the maximum interaction effect does not occur when the microcrack is along the direction parallel or perpendicular to the principal tensile stress, which is different from the conclusion drawn by Ortiz （1987）. The mechanism of microcrack generation and the effect of the microcrack zone on the main crack tip are studied. It is concluded that the microcrack zone has effect on the main crack tip, which increases with the increase of microcrack density and length. 展开更多
关键词 principle of superposition stress intensity factor interaction effect microcrack zone
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Analysis of Genetic Effects of Nuclear-Cytoplasmic Interaction on Quantitative Traits:Genetic Model for Diploid Plants 认领 引用
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作者 Lide Han Jian Yang Jun Zhu 《Journal of Genetics and Genomics》 CAS 北大核心 2007年第6期562-568,共7页
A genetic model was proposed for simultaneously analyzing genetic effects of nuclear,cytoplasm,and nuclear-cytoplasmic interaction(NCI)as well as their genotype by environment(GE)interaction for quantitative traits of... A genetic model was proposed for simultaneously analyzing genetic effects of nuclear,cytoplasm,and nuclear-cytoplasmic interaction(NCI)as well as their genotype by environment(GE)interaction for quantitative traits of diploid plants.In the model,the NCI effects were further partitioned into additive and dominance nuclear-cytoplasmic interaction components.Mixed linear model approaches were used for statistical analysis.On the basis of diallel cross designs,Monte Carlo simulations showed that the genetic model was robust for estimating variance components under several situations without specific effects.Random genetic effects were predicted by an adjusted unbiased prediction(AUP)method.Data on four quantitative traits(boll number,lint percentage,fiber length,and micronaire)in Upland cotton(Gossypium hirsutum L.)were analyzed as a worked example to show the effectiveness of the model. 展开更多
关键词 Plants traits genetic model nuclear-cytoplasmic interaction effects GE interaction genetic prediction
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A comparison of two wave energy converters’power performance and mooring fatigue characteristics-One WEC vs many WECs in a wave park with interaction effects 认领 引用
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作者 Xinyuan Shao Jonas W.Ringsberg +3 位作者 Hua-Dong Yao Zhiyuan Li Erland Johnson Göran Fredriksson 《Journal of Ocean Engineering and Science》 SCIE 2023年第4期446-460,共15页
The production of renewable energy is key to satisfying the increasing demand for energy without further increasing pollution.Harnessing ocean energy from waves has attracted attention due to its high energy density.T... The production of renewable energy is key to satisfying the increasing demand for energy without further increasing pollution.Harnessing ocean energy from waves has attracted attention due to its high energy density.This study compares two generations of floating heaving point absorber WEC,WaveEL 3.0 and WaveEL 4.0,regarding their power performance and mooring line fatigue characteristics,which are essen-tial in,e.g.,LCoE calculations.The main differences between the two WECs are the principal dimensions and minor differences in their geometries.The DNV software SESAM was used for simulations and anal-yses of these WECs in terms of buoy heave motion resonances for maximising energy harvesting,motion characteristics,mooring line forces,fatigue of mooring lines,and hydrodynamic power production.The first part of the study presents results from simulations of unit WEC in the frequency domain and in the time domain for regular wave and irregular sea state conditions.A verification of the two WECs’motion responses and axial mooring line forces is made against measurement data from a full-scale installation.In the second part of the study,the influence of interaction effects is investigated when the WECs are installed in wave parks.The wave park simulations used a fully-coupled non-linear method in SESAM that calculates the motions of the WECs and the mooring line forces simultaneously in the time domain.The amount of fatigue damage accumulated in the mooring lines was calculated using a relative tension-based fatigue analysis method and the rainflow counting method.Several factors that influence the power performance of the wave park and the accumulated fatigue damage of the mooring lines,for example,the WEC distance of the wave park,the sea state conditions,and the direction of incoming waves,are simulated and discussed.The study’s main conclusion is that WaveEL 4.0,which has a longer tube than WaveEL 3.0,absorbs more hydrodynamic energy due to larger heave motions and more efficient power production.At the same time,the accumulated fatigue damage in the moorings is lower compared to WaveEL 3.0 if the distance between the WECs in the wave park is not too short.Its motions in the hor-izontal plane are larger,which may require a larger distance between the WEC units in a wave park to avoid losing efficiency due to hydrodynamic interaction effects. 展开更多
关键词 Heaving point absorber Interaction effects Mooring fatigue Power performance analysis Wave energy
Remote electron effects and π-π interactions of α-diimine nickel complexes 认领 引用
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作者 Yizhan Wang Hailong He Dan Peng 《中国科学技术大学学报》 CAS CSCD 北大核心 2024年第9期17-22,68,共6页
The seminal report ofα-diimine palladium and nickel catalysts in 1995 represented a major breakthrough in the preparation of functionalized polyolefin materials.Owing to the high abundance and low cost of nickel,nick... The seminal report ofα-diimine palladium and nickel catalysts in 1995 represented a major breakthrough in the preparation of functionalized polyolefin materials.Owing to the high abundance and low cost of nickel,nickel-based catalysts have great application prospects in the industrialization process of olefin coordination polymerization.In this work,various N-aryl substituents with different electronic effects were synthesized and introduced intoα-diimine ligands.The aspreparedα-diimine nickel catalysts showed high polymerization activity(0.9×107–3.0×107g·mol−1·h−1)in ethylene polymerization,generating polyethylene products with adjustable molecular weights(Mn values:7.4×104–146.9×104g·mol−1)and branching densities(31/1000 C–68/1000 C).The resulting polyethylene products showed excellent mechanical properties,with high tensile strength(up to 25.0 MPa)and high strain at break values(up to 3890%).The copolymerization of ethylene and polar monomers can also be achieved by these nicekel complexes,ultimately preparing functionalized polyolefins. 展开更多
关键词 α-diimine nickel catalyst ethylene polymerization π-πinteraction effect electronic effect polar monomer
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The Weather Temperature and Air Pollution Interaction and Its Effect on Hospital Admissions due to Respiratory System Diseases in Western China 认领 引用 被引量：6
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作者 WANG Min Zhen ZHENG Shan +2 位作者 WANG Shi Gong TAO Yan SHANG Ke Zheng 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 2013年第5期403-407,共5页
Air pollution has ever become a global major public health problem.Previous studies showed that air pollution is associated with excessive mortality and morbidity of respiratory disease[1-2].The extreme weather temper... Air pollution has ever become a global major public health problem.Previous studies showed that air pollution is associated with excessive mortality and morbidity of respiratory disease[1-2].The extreme weather temperature can impact human health and the thermal stresses can lead not only to direct deaths and illnesses,but also to aggravation of respiratory disease[3-4].Though the independent 展开更多
关键词 The Weather Temperature and Air Pollution Interaction and Its Effect on Hospital Admissions due to Respiratory System Diseases in Western China
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Effects of Pure Dzyaloshinskii-Moriya Interaction with Magnetic Field on Entanglement in Intrinsic Decoherence 认领 引用 被引量：1
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作者 李大创 王先萍 +3 位作者 李虎 李小曼 杨名 曹卓良 《Chinese Physics Letters》 SCIE EI CAS CSCD 2016年第5期1-4,共4页
We investigate the effects of pure Dzyaloshinskii Moriya （DM） interaction with magnetic field on entanglement in intrinsic decoherence, assuming that the system is initially in four Bell states ｜φ±〉 = （｜00... We investigate the effects of pure Dzyaloshinskii Moriya （DM） interaction with magnetic field on entanglement in intrinsic decoherence, assuming that the system is initially in four Bell states ｜φ±〉 = （｜00） ± ｜11〉）/√2 and ｜ψ±〉 = （｜01） ±｜10〉）/√2, respectively. It is found that if the system is initially in the state p1（0） = ｜φ＋〉〈φ＋1, the entanglement can obtain its maximum when the DM interaction vector D is in the plane of XOZ and magnetic field B = By with the infinite time t, moreover the entanglement is independent of By and t when By is perpendicular to D. In addition, we obtain similar results when the system is initially in the states p2（0） = ｜φ-〉〈φ-｜ or p3 （0） = ｜ψ＋〉〈ψ＋1. However, we find that if the system is initially in the state P4 （0） = ｜ψ-〉〈ψ-l, the entanglement can obtain its maximum for infinite t, when the DM vector is in the plane ofYOZ, XOZ, or XOY, with the magnetic field parallel to X, Y, or Z axis, respectively. Moreover, when the axial B is perpendicular to D for the initial state p4（O）, the negativity oscillates with time t and reaches a stable value, the larger the value of B is, the greater the stable value is, and the shorter the oscillation time of the negativity is. Thus we can adjust the direction and value of the external magnetic field to obtain the maximal entanglement, and avoid the adverse effects of external environment in some initial state. This is feasible within the cun＇ent experimental technology. 展开更多
关键词 of in DM Effects of Pure Dzyaloshinskii-Moriya Interaction with Magnetic Field on Entanglement in Intrinsic Decoherence is with on
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Bootstrap inference of the skew-normal two-way classification random effects model with interaction 认领 引用 被引量：1
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作者 YE Ren-dao AN Na +1 位作者 LUO Kun LIN Ya 《Applied Mathematics(A Journal of Chinese Universities)》 SCIE CSCD 2022年第3期435-452,共18页
In this paper,we consider the statistical inference problems for the fixed effect and variance component functions in the two-way classification random effects model with skewnormal errors.Firstly,the exact test stati... In this paper,we consider the statistical inference problems for the fixed effect and variance component functions in the two-way classification random effects model with skewnormal errors.Firstly,the exact test statistic for the fixed effect is constructed.Secondly,using the Bootstrap approach and generalized approach,the one-sided hypothesis testing and interval estimation problems for the single variance component,the sum and ratio of variance components are discussed respectively.Further,the Monte Carlo simulation results indicate that the exact test statistic performs well in the one-sided hypothesis testing problem for the fixed effect.And the Bootstrap approach is better than the generalized approach in the one-sided hypothesis testing problems for variance component functions in most cases.Finally,the above approaches are applied to the real data examples of the consumer price index and value-added index of three industries to verify their rationality and effectiveness. 展开更多
关键词 skew-normal two-way classification random effects model with interaction fixed effect variance component functions Bootstrap generalized approach
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Independent and interactive effects of N and P additions on foliar P fractions in evergreen forests of southern China 认领 引用 被引量：2
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作者 Qingquan Meng Zhijuan Shi +3 位作者 Zhengbing Yan Hans Lambers Yan Luo Wenxuan Han 《Forest Ecosystems》 SCIE CAS CSCD 2025年第1期66-73,共8页
Fertilization or atmospheric deposition of nitrogen(N)and phosphorus(P)to terrestrial ecosystems can alter soil N(P)availability and the nature of nutrient limitation for plant growth.Changing the allocation of leaf P... Fertilization or atmospheric deposition of nitrogen(N)and phosphorus(P)to terrestrial ecosystems can alter soil N(P)availability and the nature of nutrient limitation for plant growth.Changing the allocation of leaf P fractions is potentially an adaptive strategy for plants to cope with soil N(P)availability and nutrient-limiting conditions.However,the impact of the interactions between imbalanced anthropogenic N and P inputs on the concentrations and allocation proportions of leaf P fractions in forest woody plants remains elusive.We conducted a metaanalysis of data about the concentrations and allocation proportions of leaf P fractions,specifically associated with individual and combined additions of N and P in evergreen forests,the dominant vegetation type in southern China where the primary productivity is usually considered limited by P.This assessment allowed us to quantitatively evaluate the effects of N and P additions alone and interactively on leaf P allocation and use strategies.Nitrogen addition(exacerbating P limitation)reduced the concentrations of leaf total P and different leaf P fractions.Nitrogen addition reduced the allocation to leaf metabolic P but increased the allocation to other fractions,while P addition showed opposite trends.The simultaneous additions of N and P showed an antagonistic(mutual suppression)effect on the concentrations of leaf P fractions,but an additive(summary)effect on the allocation proportions of leaf P fractions.These results highlight the importance of strategies of leaf P fraction allocation in forest plants under changes in environmental nutrient availability.Importantly,our study identified critical interactions associated with combined N and P inputs that affect leaf P fractions,thus aiding in predicting plant acclimation strategies in the context of intensifying and imbalanced anthropogenic nutrient inputs. 展开更多
关键词 Anthropogenic nutrient inputs Individual and combined effects Interactive effects Leaf phosphorus fractions Nitrogen and phosphorus additions Nutrient-utilization strategies Woody plants
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Coupling effects of depletion interactions in a three-sphere colloidal system 认领 引用
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作者 陈泽顺 戴刚 +1 位作者 高海峡 肖长明 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第5期587-590,共4页
In a three-sphere system, the middle sphere is acted upon by two opposite depletion forces from the other two spheres. It is found that, in this system, the two depletion forces are coupled with each other and result ... In a three-sphere system, the middle sphere is acted upon by two opposite depletion forces from the other two spheres. It is found that, in this system, the two depletion forces are coupled with each other and result in a strengthened depletion force. So the difference of the depletion forces of the three-sphere system and its corresponding two two-sphere systems is introduced to describe the coupling effect of the depletion interactions. The numerical results obtained by Monte- Carlo simulations show that this coupling effect is affected by both the concentration of small spheres and the geometrical confinement. Meanwhile, it is also found that the mechanisms of the coupling effect and the effect on the depletion force from the ~eometry factor are the same. 展开更多
关键词 three-sphere system coupling effect of depletion interactions
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