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Exploring Nutritional Compositions,Volatile Compounds,Health Benefits,Emerging Processing Technologies,and Potential Food Products of Glutinous Rice:A Review
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作者 Maimunah Mohd ALI Norhashila HASHIM 《Rice science》 SCIE CSCD 2024年第3期251-268,共18页
Glutinous rice(Oryza sativa var.glutinosa)stands out as one of the most popular rice varieties globally,amidst thousands of rice cultivars.Its increasing popularity is attributed to its rich nutritional compositions a... Glutinous rice(Oryza sativa var.glutinosa)stands out as one of the most popular rice varieties globally,amidst thousands of rice cultivars.Its increasing popularity is attributed to its rich nutritional compositions and health benefits.This review aims to summarize the nutritional compositions,volatile compounds,and health benefits of glutinous rice.Further,in-depth studies are necessary to explore the utilization of glutinous rice in enhancing processing technologies and developing new food products.Glutinous rice has been shown to possess numerous health benefits,including antioxidant activity,bioactive compounds,anti-cancer properties,anti-inflammatory effects,anti-diabetic potential,and cholesterol-lowering effects.Besides its nutritional compositions,the major volatile compounds identified in glutinous rice could serve as a functional food for human consumption.Emerging processing technologies related to glutinous rice are elaborated to improve the latest developments for incorporating them into various food products. 展开更多
关键词 glutinous rice health benefit volatile compound nutritional composition processing technology
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Chemical compositions and biological activities of Flos lonicerae 被引量:1
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作者 Yi’an Shi Luming Pan +3 位作者 Luyan Yang Jing Sun Meng Zhang Yu Chen 《Asian Journal of Traditional Medicines》 CAS 2023年第2期60-68,共9页
Flos lonicerae is the dry flower bud of Lonicera japonica Thunb,and it is a very important Chinese herbal medicine in China.In ancient times,it was widely used to treat the exopathogenic wind-heat,epidemic febrile dis... Flos lonicerae is the dry flower bud of Lonicera japonica Thunb,and it is a very important Chinese herbal medicine in China.In ancient times,it was widely used to treat the exopathogenic wind-heat,epidemic febrile diseases,sores,carbuncles and some infectious diseases.Modern pharmacological research has indicated that it has anti-inflammatory,anti-bacterial,anti-viral and anti-oxidation activities.This paper reviews the chemical compositions and biological activities of Flos lonicerae in order to provide reference for its application in clinical practice in the future. 展开更多
关键词 Flos lonicerae chemical composition biological activity
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Comparative advantages of chemical compositions of specific edible vegetable oils
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作者 Li Xue Ruinan Yang +4 位作者 Xuefang Wang Fei Ma Li Yu Liangxiao Zhang Peiwu Li 《Oil Crop Science》 CSCD 2023年第1期1-6,共6页
As important supplementary to major edible oils, comparative chemical advantages of minor edible oils decidetheir development and usage. In this study, chemical composition of 13 kinds of specific edible vegetable oil... As important supplementary to major edible oils, comparative chemical advantages of minor edible oils decidetheir development and usage. In this study, chemical composition of 13 kinds of specific edible vegetable oilswere investigated. The comparative advantages of chemical compositions of these edible oils were obtained asfollows: (1) camellia, tiger nut and almond oil were rich in oleic acid, the contents of which accounted for79.43%, 69.16% and 66.26%, respectively;(2) safflower oil contained the highest content of linoleic acid(76.69%), followed by grape seed (66.85%) and walnut oil (57.30%);(3) perilla seed, siritch, peony seed andherbaceous peony seed oil were rich in α-linolenic acid (59.61%, 43.74%, 40.83% and 30.84%, respectively);(4)the total phytosterol contents of these oils ranged from 91.46 mg/100 g (camellia oil) to 506.46 mg/100 g (siritchoil);and (5) The best source of tocopherols was sacha inchi oil (122.74 mg/100 g), followed by perilla seed oil(55.89 mg/100 g), peony seed oil (53.73 mg/100 g) and herbaceous peony seed oil (47.17 mg/100 g). Thecomparative advantages of these specific edible oils indicated that they possess the high potential nutritionalvalues and health care functions. 展开更多
关键词 Comparative advantages Fatty acid composition Phytosterols Tocopherols Specific vegetable oils Chemical composition
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Petrogenesis and Tectonic Significance of the Xiuwacu Two-Period Magmatism in Geza Arc of Yunnan Province: Constraints from Lithogeochemistry, Zircon U-Pb Geochronology and Hf isotopic Compositions 被引量:6
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作者 LAI Anqi LI Zhe +1 位作者 LIU Xuelong LI Yang 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2016年第2期757-758,共2页
Objective The Late Cretaceous Xiuwacu ore-bearing porphyry is located in the Geza area of southern Yidun arc, SW China. In this area, the rock mass is mainly composed of three lithofacies: biotite granite porphyry, ... Objective The Late Cretaceous Xiuwacu ore-bearing porphyry is located in the Geza area of southern Yidun arc, SW China. In this area, the rock mass is mainly composed of three lithofacies: biotite granite porphyry, monzonitic granite and light alkali feldspar granite. As a part of the Yidun arc, the Geza arc has common structure and temporal- spatial evolution with the ~idun arc, which has experienced three stages of oceanic crust subduction, collision orogeny and intracontinent convergence stages. The molybdenite ores in the area are mainly hosted in monzonitic granite-porphyry and structural fracture zone, and the ore bodies are strictly controlled by faults. In recent years, great geological prospecting results have been achieved in Xiuwacu, and the deposit has reached a medium scale. However, there are few researches on the metallogenic porphyry. Based on the previous research, we determined the rock-forming and ore-forming age of the porphyry, and found that there were two stages of magmatism intrusion in Xiuwacu: Indosinian and Yanshanian. We also discussed the geochemical characteristics and source area of the rocks in the area. 展开更多
关键词 Hf Constraints from Lithogeochemistry Petrogenesis and Tectonic Significance of the Xiuwacu Two-Period Magmatism in Geza Arc of Yunnan Province Zircon U-Pb Geochronology and Hf isotopic compositions Pb
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Age and Origin of Paleogene Granitoids from Western Yunnan Province,China:Geochemistry,SHRIMP Zircon Ages,and Hf-in-Zircon Isotopic Compositions 被引量:3
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作者 SHI Yuruo WU Zhonghai +2 位作者 Alfred KRoNER FAN Taoyuan YANG Zhenyu 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2015年第5期1601-1615,共15页
We report geochemical data, SHRIMP zircon ages and Hf-in-zircon isotopic compositions for Cenozoic granitoids from major fault systems in the Tethyan belt in western Yunnan Province, southwestern China.Four magmatic p... We report geochemical data, SHRIMP zircon ages and Hf-in-zircon isotopic compositions for Cenozoic granitoids from major fault systems in the Tethyan belt in western Yunnan Province, southwestern China.Four magmatic pulses occurred in the Paleogene, namely at ca.57 Ma, ca.50 Ma, 45–40 Ma, and 38–34 Ma.Early magmatism of this episode(57–50 Ma) produced S-type granites whose zircons yielded εHf(t) values of-5.0 to-0.3.In contrast, late magmatism of this episode reflects heterogeneous sources.Zircons from a granite porphyry along the Ailaoshan-Red River fault system have slightly positive εHf(t) values suggesting derivation from relatively young crust and/or a juvenile source.However, zircons from a granite along the Gaoligong fault system have strongly negative εHf(t) values and suggest derivation from a Paleoproterozoic crustal source.The composition of the granitoids varies with age(from ca.57 Ma to ca.34 Ma) from peraluminous to metaluminous and also suggests a change from syn-collisional to late-orogenic tectonic setting.A new tectonic model, impacting lithospheric wedge(ILW) is shown for the origin of Paleogene granitoids in this paper. 展开更多
关键词 PALEOGENE magmatism SHRIMP zircon ages Hf-in-zircon isotopic compositions western Yunnan
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Influence of contamination on banded iron formations in the Isua supracrustal belt, West Greenland: Reevaluation of the Eoarchean seawater compositions 被引量:2
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作者 Shogo Aoki Chiho Kabashima +2 位作者 Yasuhiro Kato Takafumi Hirata Tsuyoshi Komiya 《Geoscience Frontiers》 SCIE CAS CSCD 2018年第4期1049-1072,共24页
Banded Iron Formations(BIFs) are chemical sediments, ubiquitously distributed in the Precambrian supracrustal belts; thus their trace element compositions are helpful for deciphering geochemical evolution on the Ear... Banded Iron Formations(BIFs) are chemical sediments, ubiquitously distributed in the Precambrian supracrustal belts; thus their trace element compositions are helpful for deciphering geochemical evolution on the Earth through time. However, it is necessary to elucidate factors controlling the whole-rock compositions in order to decode the ancient seawater compositions because their compositions are highly variable. We analyzed major and trace element contents of the BIFs in the 3.8-3.7 Ga Isua supracrustal belt(ISB), southern West Greenland. The BIFs are petrographically classified into four types:Black-,Gray-, Green-and White-types, respectively. The Green-type BIFs contain more amphiboles, and are significantly enriched in Co, Ni, Cu, Zn, Y, heavy rare earth element(HREE) and U contents. However,their bulk compositions are not suitable for estimate of seawater composition because the enrichment was caused by secondary mobility of metamorphic Mg, Ca and Si-rich fluid, involvement of carbonate minerals and silicate minerals of olivine and pyroxene and/or later silicification or contamination of volcanic and clastic materials. The White-type BIFs are predominant in quartz, and have lower transition element and REE contents. The Gray-type BIFs contain both quartz and magnetite. The Black-type BIFs are dominated by magnetite, and contain moderate to high transition element and REE contents. But,positive correlations of V, Ni, Zn and U contents with Zr contents suggest that involvement of detrital,volcanic and exhalative materials influences on their contents. The evidence for significant influence of the materials on the transition element contents such as Ni in the BIFs indicates the transition element contents in the Archean ocean were much lower than previously estimated. We reconstructed secular variations of V,Co, Zn and U contents of BIFs through time, which show Ni and Co contents decreased whereas V, Zn and U contents increased through time. Especially, the Ni and Co contents drastically decreased in the Mesoarchean rather than around the Great Oxidation Event. On the other hand, the V,Zn and U contents progressively increased from the Mesoarchean to the Proterozoic. Stratigraphical trends of the BIFs show increase in Y/Ho ratios and decrease in positive Eu anomaly upwards, respectively. The stratigraphic changes indicate that a ratio of hydrothermal fluid to seawater component gradually decrease through the deposition, and support the Eoarchean plate tectonics, analogous to the their stratigraphic variations of seafloor metalliferous sediments at present and in the Mesoarchean. 展开更多
关键词 Banded iron formations Eoarchean Isua supracrustal belt Bioessential elements Seawater compositions
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Origin of natural sulfur-metal chimney in the Tangyin hydrothermal field,Okinawa Trough:constraints from rare earth element and sulfur isotopic compositions 被引量:3
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作者 Hong Cao Zhi-lei Sun +3 位作者 Chang-ling Liu En-tao Liu Xue-jun Jiang Wei Huang 《China Geology》 2018年第2期225-235,共11页
For the first time,we present the rare earth element (REE)and sulfur isotopic composition of hydrothermal precipitates recovered from the Tangyin hydrothermal field (THF),Okinawa Trough at a water depth of 1206 m.The ... For the first time,we present the rare earth element (REE)and sulfur isotopic composition of hydrothermal precipitates recovered from the Tangyin hydrothermal field (THF),Okinawa Trough at a water depth of 1206 m.The natural sulfur samples exhibit the lowest ∑REE concentrations (∑REE= 0.65×10^-6-4.580×10^-6)followed by metal sulfides (∑REE=1.71×10^-6-11.63×10^-6).By contrast,the natural sulfur-sediment samples have maximum ∑REE concentrations (∑REE=1 1.54×10^-6-33.06×10^-6), significantly lower than those of the volcanic and sediment samples.Nevertheless,the δEu,δCe,(La/Yb)N, La/Sm,(Gd/Yb)N and normalized patterns of the natural sulfur and metal sulfide show the most similarity to the sediment.Most hydrothermal precipitate samples are characterized by enrichments of LREE (LREE/HREE=10.09-24.53)arid slightly negative Eu anomalies or no anomaly (δEu=0.48-0.99),which are different from the hydrothermal fluid from sediment-free mid-oceanic ridges and back-are basins,but identical to the sulfides from the Jade hydrothermal field.The lower temperature and more oxidizing conditions produced by the mixing between seawater and hydrothermal fluids further attenuate the leaching ability of hydrothermal fluid,inducing lower REE concentrations for natural sulfur compared with metal sulfide;meanwhile,the negative Eu anomaly is also weakened or almost absent.The sulfur isotopic compositions of the natural sulfur (δ^34S=3.20‰-5.01‰,mean 4.23 ‰)and metal sulfide samples (δ34S=0.82‰-0.89‰,mean 0.85‰)reveal that the sulfur of the chimney is sourced from magmatic degassing. 展开更多
关键词 Hydrothormal processes NATURAL SULFUR Isotopic compositions REE Tangyin field OKINAWA TROUGH China
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Siderophile Element Compositions of Pyroxenes in HED Meteorites: Implications for the Differentiation of Magma Ocean on Vesta 被引量:2
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作者 CHEN Hongyi MIAO Bingkui +1 位作者 XIE Lanfang SHAO Huimin 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2017年第S1期267-268,共2页
1 Introduction The howardite,eucrite and diogenite(HED)meteorites are ultramafic and mafic igneous rocks and impact-engendered breccias derived from a thoroughly differentiated asteroid 4 Vesta.Diogenites include duni... 1 Introduction The howardite,eucrite and diogenite(HED)meteorites are ultramafic and mafic igneous rocks and impact-engendered breccias derived from a thoroughly differentiated asteroid 4 Vesta.Diogenites include dunites, 展开更多
关键词 Co Siderophile Element compositions of Pyroxenes in HED Meteorites Implications for the Differentiation of Magma Ocean on Vesta
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The Background of Regional Lead Isotopic Compositions and Its Application in the Lower and Middle Reaches of the Yangtze River and Neighbouring Areas 被引量:1
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作者 Ma Zhendong and Shan Guangxiang Geochemistry Institute, China University of Geosciences, Wuhan, Hubei 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 1997年第2期158-170,共13页
The paper systematically deals with the background of regional isotopic compo-sitions in the lower and middle reaches of the Yangtze River and neighbouring areas. It isshown that the lead isotopic compositions of diff... The paper systematically deals with the background of regional isotopic compo-sitions in the lower and middle reaches of the Yangtze River and neighbouring areas. It isshown that the lead isotopic compositions of different geological formations and units are con-trolled by the primary mantle heterogeneity, dynamic process of crust-mantle interchange,abundances of uraninm, thorium and lead of various layers of the earth and timing. Studies onthe background of regional isotopic compositions may offer significant information forgeochemical regionalization, tracing of sources of ore-forming materials, and regionalprognosis of ore deposits. 展开更多
关键词 background of regional lead isotopic compositions tracing action lower and middle reaches of the Yangtze River and neighbouring areas
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Zircon U-Pb Chronology and Whole-rock Sr-Nd Isotope Compositions of Granite Porphyry in the Kaladaban Area of the Northern Altyn
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作者 JIA Wenbin LI Yongsheng +1 位作者 MI Kuifeng YU Xiaofei 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2020年第1期200-201,共2页
Objective The Altyn Tagh marks the northern margin of the Qinghai-Tibet Plateau and lies between the Tarim block to the north and the Qaidam block,Qilian Orogen,and Kunlun orogenic belt to the south.The Altyn Tagh reg... Objective The Altyn Tagh marks the northern margin of the Qinghai-Tibet Plateau and lies between the Tarim block to the north and the Qaidam block,Qilian Orogen,and Kunlun orogenic belt to the south.The Altyn Tagh region contains ophiolite,high-to ultrahigh-pressure metamorphic rocks,and igneous rocks.Previous research has virified the occurrence of continental rifting,subduction,slab roll-back,and collision between the Tarim block and Proto-Tethys oceanic plate.Moreover,Kaladaban volcanic rocks are mainly distributed in the north Altyn region.Studies of the magmatic evolution of this region have proposed that Altyn oceanic plate was subducted during the Ordovician(Han et al.,2012;Wang et al.,2017).However,the specific timing and other aspects of the subduction are debated,and an investigation of granite porphyry in the Kaladaban area would improve our understanding of this subduction event.In this study,we present new U-Pb zircon dating result and Sr-Nd isotope composition data for granite porphyry from the North Altyn region.The objective is to constrain the timing of subduction of the North Altyn oceanic plate and establish the petrogenesis and magma source of the granite porphyry. 展开更多
关键词 ZIRCON U-Pb CHRONOLOGY and Whole-rock SR-ND Isotope compositions of Granite PORPHYRY in the Kaladaban Area of the NORTHERN Altyn NORTHERN
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Compositions and possible sources of lunar meteorite NWA 4884
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作者 CHEN Jian LING Zongcheng +6 位作者 LI Bo SUN Lingzhi ZHANG Jiang HUANG Yihang WU Zhongchen NI Yuheng LIU Jianzhong 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2017年第S1期269-270,共2页
1 Introduction Lunar mare basalts represent the products of partial remelting of deep mantle sources and provide windows into the compositions of lunar interior.Nine Apollo andLuna missions returned large amounts of m... 1 Introduction Lunar mare basalts represent the products of partial remelting of deep mantle sources and provide windows into the compositions of lunar interior.Nine Apollo andLuna missions returned large amounts of mare basaltic samples,while remote sensing suggests that sampled basalts may cover only a small number of the lunar basalt 展开更多
关键词 TH CA compositions and possible sources of lunar meteorite NWA 4884 GRS
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Effect of Chemical Compositions on Temperature Susceptibility of Bitumens
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作者 梁永胜 余剑英 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2010年第4期669-673,共5页
The viscosity of five bitumens was measured at different temperatures and the viscosity-temperature relationship was developed to evaluate the temperature susceptibility of different bitumens. The generic fractions (... The viscosity of five bitumens was measured at different temperatures and the viscosity-temperature relationship was developed to evaluate the temperature susceptibility of different bitumens. The generic fractions (i e, saturates, aromatics, resins and asphaltenes) of the bitumens were separated and tested by thin-layer chromatography with flame ionization detection (TLC-FID) and the effect of chemical compositions on temperature susceptibility of bitumens was analyzed using the linear regression method. The experimental results show that the four generic fractions play an inconsistent role in the temperature susceptibility of bitumens and the correlation degree of each fraction is somewhat different. The existence of aromatics and asphaltenes can lower the sensitivity to temperature changes whereas saturates and resins may have an adverse impact on the temperature susceptibility of bitumens. As for the correlation degrees, resins show the closest correlation with the temperature susceptibility of bitumens, then asphaltenes and aromatics, and the correlation between temperature susceptibility and saturates is relatively weak. 展开更多
关键词 BITUMEN temperature susceptibility chemical compositions VISCOSITY
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Effects of Mg/PTFE pyrotechnic compositions on reignition characteristics of base bleed propellants and heating mechanism
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作者 Xiao-chun Xue Long-ze Ma Yong-gang Yu 《Defence Technology(防务技术)》 SCIE EI CAS CSCD 2022年第1期94-108,共15页
The effects of magnesium/polytetrafluoroethylene(Mg/PTFE)pyrotechnic compositions on the coupled flow field and reignition mechanism are important aspects governing the perfommance and range of base bleed projectiles(... The effects of magnesium/polytetrafluoroethylene(Mg/PTFE)pyrotechnic compositions on the coupled flow field and reignition mechanism are important aspects governing the perfommance and range of base bleed projectiles(BBPs).Owing to a decrease in pressure and temperature when the BBP leaves the muzzle,rapid depressurization occurs,which extinguishes the base bleed propellant.The Mg/PTFE py-rotechnic composition pressed in the igniter of the base bleed unit(BBU)provides additional energy to the BBU via a chemical reaction.Thus,the extinguished base bleed propellant is reignited under the effect of high-temperature combustion gas jets from the igniter.In this study,a numerical analysis is conducted to evaluate the effects of PTFE and Mg granularity as well as Mg/PTFE pyrotechnic compo-sitions.Owing to the rapid depressurization,the temperature and pressure was found to decrease fordifferent Mg/PIFE pyrotechnic compositions.However,the depressurization time increased as the PTFE granularity increased,the Mg granularity decreased,and the Mg content increased.When the pressure in the combustion chamber of the BBU decreased to the atmospheric pressure,the combustion gas jets from the igniter expand upstream(rather than downstream).However,these combustion gas jets exhibit different axial and radial expansion characteristics depending on the pyrotechnic compositions used,The results show that the reignition delay time,ta,of the base bleed propellant was 377.608,94.27,387.243,523.966,and 221.094 ms for cases A-E,respectively.Therefore,it was concluded that the Mg/PTFE pyrotechnic composition of case B was the most beneficial for the reignition of the base bleed propellant,with the earliest addition of energy and mass to the BBP. 展开更多
关键词 Thermal effect High-temperature combustion gas Mg/PTFE pyrotechnic compositions REIGNITION
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Thermophysical properties of pure gases and mixtures at temperatures of 300-30000K and atmospheric pressure:thermodynamic properties and solution of equilibrium compositions
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作者 池中源 张卫军 杨强大 《Plasma Science and Technology》 SCIE EI CAS CSCD 2021年第12期161-175,共15页
The equilibrium compositions and thermodynamic properties(density,enthalpy,etc at constant pressure)of plasma of pure gases and mixtures under local thermodynamic nonequilibrium have been calculated in this paper.The ... The equilibrium compositions and thermodynamic properties(density,enthalpy,etc at constant pressure)of plasma of pure gases and mixtures under local thermodynamic nonequilibrium have been calculated in this paper.The homotopy Levenberg-Marquardt algorithm was proposed to accurately solve nonlinear equations with singular Jacobian matrices,and is constructed by the Saha equation and Guldberg-Waage equation combined with mass conservation,the electric neutrality principle and Dalton’s partial pressure law,to solve the problem of dependence on the initial value in the process of iteration calculation.In this research,the equations at a higher temperature were solved and used as the auxiliary equations,and the homotopy control parameters’sequence of the homotopy equations was selected by equal ratios.For auxiliary equations,the iterative initial value was obtained by assuming that there were only the highestvalence atomic cations and electrons at this temperature,and the plasma equilibrium composition distribution with the required accuracy was ultimately solved under the current conditions employing the Levenberg-Marquardt algorithm.The control parameter sequence was arranged according to the geometric sequence and the homotopy step was gradually shortened to ensure continuity of the homotopy process.Finally,the equilibrium composition and thermodynamic properties of pure N_(2),Mg(30%)-CO_(2)(70%)and Mg(40%)-CO(50%)-N_(2)(10%)mixture plasma at atmospheric pressure were calculated and the calculation process of some specified temperatures was shown and analyzed.The calculation accuracy of equilibrium composition is higher than other findings in the literature.The results for the thermodynamic properties are in good agreement with data reported by the literature. 展开更多
关键词 plasma equilibrium compositions thermodynamic properties homotopy Levenberg-Marquardt algorithm(HLMA) auxiliary equations
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Growth and Characterization of InAs1-xSbx with Different Sb Compositions on GaAs Substrates
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作者 孙庆灵 王禄 +6 位作者 王文奇 孙令 李美成 王文新 贾海强 周均铭 陈弘 《Chinese Physics Letters》 SCIE CAS CSCD 2015年第10期89-92,共4页
InAs1-xSbx with different compositions is grown by molecular beam epitaxy on (100)-oriented semi-insulating GaAs substrates. The increase of Sb content in the epilayer results in the deterioration of crystal quality... InAs1-xSbx with different compositions is grown by molecular beam epitaxy on (100)-oriented semi-insulating GaAs substrates. The increase of Sb content in the epilayer results in the deterioration of crystal quality and surface morphology. Hall measurements show that the carrier concentration increases with the composition of Sb. The electron mobility decreases initially, when Sb composition exceeds a certain value, and the mobility increases slightly. In this work, we emphasize the comparison of crystal quality, surface morphology and electrical properties of epilayers with different Sb compositions. 展开更多
关键词 Growth and Characterization of InAs x)Sb_x with Different Sb compositions on GaAs Substrates SB
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The Key Influence of Fluid in Metamorphic Rock Preserves, Mineral Assemblages, Compositions and Structures: Study from High-Pressure Eclogite and Its Amphibolization in the Western Dabie Mountains,Central China
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作者 LOU Yuxing ZHANG Cong +2 位作者 WEI Chunjing LIU Xiaochun WANG W-(RZ) 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2016年第S1期228-230,共3页
The most of high/ultrahigh-pressure(HP/UHP)terranes of the world are characterized by the occurrence of numerous pods,lenses or layered blocks of eclogite and amphibolites(e.g.O’Brien,1997;Elvevold and Gilotti,2000;Z... The most of high/ultrahigh-pressure(HP/UHP)terranes of the world are characterized by the occurrence of numerous pods,lenses or layered blocks of eclogite and amphibolites(e.g.O’Brien,1997;Elvevold and Gilotti,2000;Zhang et al.,2003;and references there in).Field and petrological features suggest that amphibolites should 展开更多
关键词 UHP Mineral Assemblages Study from High-Pressure Eclogite and Its Amphibolization in the Western Dabie Mountains Central China The Key Influence of Fluid in Metamorphic Rock Preserves compositions and Structures
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Prediction of the Melting Paths of Wollastonite-Containing Compositions
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作者 Sergey M.LOGVINKOV Ihor A.OSTAPENKO +2 位作者 Oksana N.BORISENKO Olga B.SKORODUMOVA Andriy A.IVASHURA 《China's Refractories》 CAS 2020年第3期13-18,共6页
The article analyzed the main groups of thermal insulation(TIM)and slag-forming(SFM)mixtures produced by leading foreign companies:acidic ones based on the SiO2–Al2O3 system,basic ones based on the CaO–MgO–Al2O3 sy... The article analyzed the main groups of thermal insulation(TIM)and slag-forming(SFM)mixtures produced by leading foreign companies:acidic ones based on the SiO2–Al2O3 system,basic ones based on the CaO–MgO–Al2O3 system and medium basic ones based on the CaO(MgO)system–Al2O3–SiO2.It is shown that achieving the necessary properties of the SFM and TIM requires strict observance of the mass content of the components of mixtures produced on the basis of synthetic materials in granular form with a given dispersion.Compliance with a given composition and dispersion is associated with the need to provide a given melting temperature(for intermediate ladles 1250–1450℃,for molds 950–1150℃),neutrality to the cast metal,protection of the melt from secondary oxidation,minimization of heat loss from the melt mirror,absorption of non-metallic inclusions of various natures(Al2O3,CaO,SiO2,TiO2,less often MgO-containing)and sizes;as well as a number of specific requirements:compatibility with the working layer of the lining of the bucket,maintaining the work of the stoppers,minimizing harmful gaseous emissions,etc.It is known that Al2O3,TixOy,and CaO refractory inclusions in steel cause the majority of defects on the surface of a cold-rolled sheet,therefore,the aim of the work was to analyze the physicochemical regularities and melting paths of the wollastonite-containing compositions during the assimilation of nonmetallic inclusions by them.To analyze the melting paths of the wollastonite-containing compositions in the CaO–Al2O3–SiO2 system,a diagram of the primary crystallization field of anorthite and the adjacent boundary curves is shown,indicating the directions of temperature drop and designating invariant points.The presented scheme adequately reflects the topological regularities of the state diagram of the CaO–Al2O3–SiO2 system.To analyze the melting paths of the wollastonite-containing SFM compositions during the assimilation of TiOx impurities from steel melts,a diagram of the primary crystallization field of CaTiSiO5 sphene with adjacent boundary curves,the direction of temperature drop,and the designation of invariant points is presented.It is shown that steric and kinetic factors have a predominant effect on the formation of the three-layer layer in the SFM(molten,partially molten and unmelted layers).The more uniform the thickness of the entire SFM layer(when it is heated from the melt mirror),the smaller the influence,and the competing processes of solid-phase interaction will start,which provide a gradual accumulation of more refractory compounds and increase the melting temperature of the SFM. 展开更多
关键词 wollastonite-containing compositions slag-forming mixtures heat-insulating mixtures solid-phase interaction
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Compositions & Melt Evolution of Upper Mantle Peridotites in the Tethyan Ophiolites
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作者 Yildirim DILEK 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2016年第S1期211-,共1页
The Jurassic–Cretaceous ophiolites in the Alpine–Himalayan orogenic belt represent fragments of oceanic lithosphere,developed in different seaways separated by Gondwana–derived ribbon continents within a broad
关键词 compositions Melt Evolution of Upper Mantle Peridotites in the Tethyan Ophiolites
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Application of Three Registers of FSG to Analyze Students' Compositions 被引量:1
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作者 谢贤春 《中国校外教育》 2008年第12期52-53,共2页
During the process of checking one of the students' composition,the author applies the field,tenor,and mode of FSC to analyze the writing in a broader way than before,which gives an enlightenment to teaching writi... During the process of checking one of the students' composition,the author applies the field,tenor,and mode of FSC to analyze the writing in a broader way than before,which gives an enlightenment to teaching writing and assisting students in a new angle. 展开更多
关键词 FSG teach writing composition analysis
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Chemical Variation of Chromian Spinel Compositions in a Serpentinized Peridotites: Implications for Evolution of the Neoproterozoic Ophiolites
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作者 Hamed Gamal EL DIEN Tomoaki MORISHITA +3 位作者 Mohamed HAMDY Abdel Salam ABU EL-ELA Adel HASSAN Yusuke SODA 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2016年第S1期210-,共1页
Tectonic setting of the Neoproterozoic ophiolites is poorly understood.Because of extensive serpentinization/metamorphism in the mantle section,accessory chromian spinel has been used as an important geotectonic indic... Tectonic setting of the Neoproterozoic ophiolites is poorly understood.Because of extensive serpentinization/metamorphism in the mantle section,accessory chromian spinel has been used as an important geotectonic indicator. 展开更多
关键词 Chemical Variation of Chromian Spinel compositions in a Serpentinized Peridotites Implications for Evolution of the Neoproterozoic Ophiolites
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