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Exploration on the Integration of Curriculum Ideological and Political Concept into the Teaching Design of"Culinary Raw Materials":A Case Study of Livestock and Poultry Raw Materials
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作者 Heng PENG Suge LIN +2 位作者 Weihui CHEN Junsheng HUANG Xiaorou YANG 《Agricultural Biotechnology》 2024年第5期86-92,共7页
Comprehensively promoting curriculum ideological and political education is a strategic measure to implement the fundamental task of establishing moral integrity and educating people.Culinary raw materials is the core... Comprehensively promoting curriculum ideological and political education is a strategic measure to implement the fundamental task of establishing moral integrity and educating people.Culinary raw materials is the core curriculum of culinary majors,which is rich in ideological and political elements.In this study,taking livestock and poultry raw materials as an example,the teaching design of integrating curriculum ideological and political education into culinary raw materials were investigated by sorting out its teaching contents and excavating its ideological and political elements.Taking livestock and poultry raw materials in Teochew Cuisine Raw Materials as an example,the teaching design of curriculum ideological and political education was conducted,aiming to provide some reference and guidance for curriculum ideological and political education of the curriculum. 展开更多
关键词 Culinary raw materials Livestock and poultry Curriculum ideological and political education Ideological and political elements Teaching design
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Effects of Al_(2)O_(3)-SiO_(2) Raw Material Types on Properties of Anorthite Based Insulation Refractories
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作者 DU Juan GUO Huishi +4 位作者 YANG Jialin LI Wenfeng GUI Yanghai ZHAO Zhiqiang LIU Yingfan 《China's Refractories》 CAS 2024年第1期23-27,共5页
To optimize their Al_(2)O_(3)-SiO_(2) raw materials,anorthite based insulation refractories were prepared by the in-situ sintering process combined with the foaming method after sintering at 1350℃for 3 h,using green ... To optimize their Al_(2)O_(3)-SiO_(2) raw materials,anorthite based insulation refractories were prepared by the in-situ sintering process combined with the foaming method after sintering at 1350℃for 3 h,using green and pollution-free kaolin,kyanite,andalusite and sillimanite as Al_(2)O_(3)-SiO_(2) raw materials,respectively,and industrial CaCO_(3) as the CaO source.Effects of Al_(2)O_(3)-SiO_(2) raw material types on the physical properties,phase composition and microstructure were investigated.The results are as follows.All samples prepared by different Al_(2)O_(3)-SiO_(2) raw materials have hexagonal flake anorthite and a small amount of mullite and corundum.Their bulk density and thermal conductivity decrease in the order of using kaolin,andalusite,kyanite and sillimanite as the Al_(2)O_(3)-SiO_(2) raw material,but their apparent porosity increases.Moreover,in the sample with kaolin,the bonding between anorthite crystals on the pore walls is closer than that of the other samples,which is conducive to increasing the cold crushing strength.The bonding between anorthite crystals on pore walls gradually decreases in the order of using kyanite,andalusite and sillimanite as the Al_(2)O_(3)-SiO_(2) raw material,thus their cold crushing strength decreases accordingly.In comprehensive consideration,the properties of the sample from kyanite are the optimal.Its apparent porosity,thermal conductivity and cold crushing strength are 84.6%,0.141 W·m^(-1)·K^(-1) and 1.89 MPa,respectively. 展开更多
关键词 anorthite based insulation refractories Al_(2)O_(3)-SiO_(2)raw materials crushing strength thermal conductivity microstructure
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Raw Materials of Chinese Traditional Handmade paper 被引量:1
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作者 Cheuk Kei Chan Xiaohui Yi 《Paper And Biomaterials》 CAS 2023年第3期58-65,共8页
Chinese traditional handmade papers,due to their numerous names,have been misunderstood by the public about raw materials for a long time.This manuscript aims to introduce the raw materials of traditional Chinese hand... Chinese traditional handmade papers,due to their numerous names,have been misunderstood by the public about raw materials for a long time.This manuscript aims to introduce the raw materials of traditional Chinese handmade paper in a botanical aspect in chronological order.Chinese handmade paper’s raw materials are divided into two groups,bast fiber and grass fiber.Bast fiber paper includes ramie-made rag paper,mulberry and paper mulberry paper,Thymelaeaceae paper,and vine paper.Stalk and grass fiber paper includes bamboo paper,grass paper,and stalk paper. 展开更多
关键词 handmade paper raw materials bast fiber paper bamboo paper
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Investigation of Refractory Bricks and Oxide Materials Heated in Hydrogen Reduction Conditions
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作者 Sangbae CHOI Raehyeong PARK +1 位作者 Gideok YANG Yeonghyeon KIM 《China's Refractories》 CAS 2024年第2期22-26,共5页
This study aims to provide the basic knowledge for furnace refractory design by investigating refractory property changes occurred in a hydrogen atmosphere.Since refractory bricks are thermodynamically stable in a hyd... This study aims to provide the basic knowledge for furnace refractory design by investigating refractory property changes occurred in a hydrogen atmosphere.Since refractory bricks are thermodynamically stable in a hydrogen atmosphere at 1100°C,we tried to find out the minute changes.In this experiment,a refractory brick was prepared by andalusite,mullite chamotte,and clay as raw materials and heated to 1100°C in a 100%hydrogen atmosphere for 72 h.It was found that the strength of the brick was decreased and the color was changed to black by the reduction of impurities.And in addition,this study covered research on the slaking risk of MgO raw materials because the minimum temperature is expected to 400°C in fluidized reduction furnaces unlike shaft furnaces. 展开更多
关键词 hydrogen reduction furnace refractory bricks refractory raw materials
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Effects of synthesis temperature and raw materials composition on preparation of β-Sialon based composites from fly ash 被引量:9
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作者 MA Bei-yue LI Ying +1 位作者 YAN Chen DING Yu-shi 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2012年第1期129-133,共5页
β-Sialon based composites were successfully prepared from fly ash and carbon black under nitrogen atmosphere by carbothermal reduction-nitridation process. Effects of heating temperature and raw materials composition... β-Sialon based composites were successfully prepared from fly ash and carbon black under nitrogen atmosphere by carbothermal reduction-nitridation process. Effects of heating temperature and raw materials composition on synthesis process were investigated, and the formation process of the composites was also discussed. The phase composition and microstructure of the composites were characterized by X-ray diffraction and scanning electronic microscopy. The results show that increasing heating temperature or mass ratio of carbon black to fly ash can promote the formation of β-Sialon. The β-Sialon based composites can be synthesized at 1723 K for 6 h while heating the sample with mass ratio of carbon black to fly ash of 0.56. The as-received β-Sialon in the composites exists as granular with an average particle size of 2-3 μm. The preparation process of β-Sialon based composites includes the formation of O′-Sialon, X-Sialon and β-Sialon as well as the conversion processes of O′-Sialon and X-Sialon to β-Sialon. 展开更多
关键词 SIALON COMPOSITES carbothermal reduction-nitridation process fly ash synthesis temperature raw materials composition
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Development and Application of Hydrocracking Catalysts RHC-1/RHC-5 for Maximizing High Quality Chemical Raw Materials Yield 被引量:6
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作者 Mao Yichao Nie Hong +3 位作者 Li Mingfeng Hu Zhihai Zhao Guangle Zhao Yang 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2018年第2期41-47,共7页
To adapt to the change in the demand of the oil refining market,two hydrocracking catalysts,RHC-1 and RHC-5,were developed to improve the quality of tail oil.The catalysts were designed based on the theory of selectiv... To adapt to the change in the demand of the oil refining market,two hydrocracking catalysts,RHC-1 and RHC-5,were developed to improve the quality of tail oil.The catalysts were designed based on the theory of selective ring-opening.By selecting more acidic molecular sieves,the problem of poor selectivity of conventional materials can be solved to properly match up to the hydrogenation performance of catalysts.Compared with the performance of previous catalysts,the quality of the tail oil achieved by the said catalysts is better,and the BMCI is reduced by 1—2 units.In the long cycle operation of the petroleum industry,the good quality of the tail oil has been verified and the adaptability of the process conditions is good.When the RHC-1 catalyst is used to process heavy feed under medium pressure,a BMCI value of about12 can be obtained along with a nearly 60%yield of tail oil.The total yield of chemical raw material(steaming cracking feed+catalytic reforming feed)can exceed 80%,and the hydrogen consumption has dropped by nearly 50%as compared to the conventional hydrocracking conversion rate.When processing a mixed CGO and VGO feed with the full conversion mode under a hydrogen pressure of 13.0 MPa,the RHC-5 catalyst can yield about 68.4%of heavy naphtha with a potential aromatic content of up to 50.6,while the total yield of chemical raw materials can reach more than 98%.The results of industrial application of these catalysts show that more than 30%of high quality tail oil can be obtained via processing of inferior quality feed,and its BMCI value can reach 10.7.The total yield of chemical raw materials can reach more than65%.The industrial operation process has implemented two operating cycles totaling 8 years. 展开更多
关键词 HYDROCRACKING CATALYST chemical raw material tail oil
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Assessing geological uncertainty of a cement raw material deposit,southern Vietnam,based on hierarchical simulation 被引量:1
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作者 Trong Vu Carsten Drebenstedt Tran Bao 《International Journal of Mining Science and Technology》 SCIE EI CAS CSCD 2020年第6期819-837,共19页
Resource modeling plays a crucial role in raw material quality management for cement manufacturing.Research has shown that geological uncertainty in resource modeling is inevitable and results in risk to future extrac... Resource modeling plays a crucial role in raw material quality management for cement manufacturing.Research has shown that geological uncertainty in resource modeling is inevitable and results in risk to future extraction planning and operations of the cement plant.This study aims to assess the geological uncertainty and associated risk in modeling a cement raw material deposit in southern Vietnam.For this deposit,soil,clay,laterite,and limestone are the four primary rock types,controlling the occurrence and spatial distribution of chemical grades.In this study,hierarchical simulation method was used to evaluate the uncertainty.Rock types were first simulated,and the chemical grades conditioning to the rock types were then generated.The results demonstrated the capability of the hierarchical simulation approach to incorporate the uncertainty of rock types in resource modeling and to allow evaluating the risks in providing the desired raw material for the cement plant in the form of grade-tonnage curves. 展开更多
关键词 Cement raw material Geological uncertainty Rock types GRADES Hierarchical simulation
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Studies on Fragrance Raw Materials of α-Terpineol Analogues 被引量:1
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作者 Tang Shixiong, Liu Hong, Wang Changfeng, Cao Yurong, Liao Xiangmin and Wang Xiaolan (Department of Chemistry, Nankai University, Tianjin) 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1991年第4期212-220,共9页
Thirty four α-substituted or α, α-disubstituted-( 1-methylcyclohexen-4-yl )methanols and α-substituted or α,α-disubstituted-(4-methylcyclohexyl) methanols weresynthesized. Thirty two of them are new compounds. 1... Thirty four α-substituted or α, α-disubstituted-( 1-methylcyclohexen-4-yl )methanols and α-substituted or α,α-disubstituted-(4-methylcyclohexyl) methanols weresynthesized. Thirty two of them are new compounds. 1H NMR and IR spectra of allthe compounds were determined, MS spectra of some of them were obtained as well.The characteristic odors were evaluated.Keywords Fragrance raw materials,α-Terpineol analogues, Synthesis, Structuredetermination 展开更多
关键词 Studies on Fragrance raw materials of ppm OH Terpineol Analogues
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On "China-measures related to the exportation of various raw materials" case in terms of DSB's interpretations 被引量:1
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作者 Hua Shi Wenjia Sun Scott Albert Charles Roker 《Chinese Journal of Population,Resources and Environment》 2014年第2期165-170,共6页
The Appellate Body report in January 2012 had supported the decision of Panel in the"China-measures related to the exportation of various raw materials"case(WT/DS394,395,398)and affirmed that China's res... The Appellate Body report in January 2012 had supported the decision of Panel in the"China-measures related to the exportation of various raw materials"case(WT/DS394,395,398)and affirmed that China's restrictions(such as tariffs and quota measures)on the exportation of raw materials violated rules put forth by the WTO,which were required to be modified.In this case China's right to invoke Article 20 of GATT1994("general exception")to justify its exemption from the guidelines in Article 11.3 of the WTO Accession Protocol was denied by the Panel and the Appellate Body.This was due to the fact that the phrasing in Article 11.3 of Protocol failed to mention"GATT."This was the consequence of the two interpretation approaches the Dispute Settlement Body(DSB)adopted-a narrow textual interpretation and a subjective presumption of"legislative silence."The inappropriate use of the two methods of interpretation lead to an imbalance between the right and obligation of China under the additional obligations that were imposed upon China by the WTO,which create a negative impact on China's rare earth case and the protection of domestic natural resources. 展开更多
关键词 raw material textual interpretation legislative silence
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Development and Markets of China's Refractory Raw Materials 被引量:1
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作者 LIU Hongquan(China Industry Association of Non-metal Mine, Beijing 100026, China) 《China's Refractories》 CAS 2002年第1期26-31,共6页
The distribution of refractory raw material resources , its throughput capacity, product varieties and quality as well as market situation in China were investigated.
关键词 Refractory raw materials DISTRIBUTION China
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Carboxyethylated Microfibrillated Cellulose Fibers Prepared from Different Raw Materials 被引量:3
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作者 Jinghuan Chen Jingang Liu +1 位作者 Leilei Hou Zehong Xu 《Paper And Biomaterials》 CAS 2021年第1期22-32,共11页
Carboxyethylation pretreatment was used to prepare microfibrillated cellulose(MFC)in this study.In order to evaluate the adaptability of this pretreatment method,carboxyethylated MFC was prepared from six different ce... Carboxyethylation pretreatment was used to prepare microfibrillated cellulose(MFC)in this study.In order to evaluate the adaptability of this pretreatment method,carboxyethylated MFC was prepared from six different cellulosic materials.The carboxyl content,degree of polymerization,water retention value,charge density,chemical structure,size distribution,and micromorphology of the materials before and after pretreatment and grinding were studied and compared.The viscosity,ultraviolet(UV)transmittance,and thermal stability of the MFC samples at a certain concentration were determined.The results showed that the carboxyl content,water retention value,charge density,degree of polymerization,size distribution,and micromorphology of the pretreated and ground samples varied with those of the raw materials.The initial viscosity varied based on the type of raw material used.The MFC suspension prepared from cotton linter pulp had the highest UV transmittance,while the MFC prepared from bleached softwood kraft pulp had the highest viscosity at a low shear rate.After thermal degradation,the amount of residual char from the MFC prepared with the thermo-mechanical pulp was slightly higher than that of the other MFCs.This study demonstrates that carboxyethylation is an effective pretreatment method for different cellulosic materials. 展开更多
关键词 carboxyethylated pretreatment cellulosic raw materials MFC PROPERTIES
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Optimal Selection of Raw Material Forest Species for Edible Fungi in Guizhou Province 被引量:1
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作者 Xingui Li Lifen Peng 《Agricultural Biotechnology》 CAS 2018年第2期101-104,108,共5页
A comprehensive evaluation system,which focused on optimal selection of raw material forest species for edible fungi,was established by combination of Analytic Hierarchy Process(AHP)and Experts Grading Method(EGM).The... A comprehensive evaluation system,which focused on optimal selection of raw material forest species for edible fungi,was established by combination of Analytic Hierarchy Process(AHP)and Experts Grading Method(EGM).The evaluation system had 4 indices of grade I and 12 indices of grade II.Among the 12 indices of grade II,the weighted values of production quality of edible fungi P2(0.2874),usable time P7(0.1873),annual average increment P8(0.1873),edible fungi production suitability P1(0.0958)were larger than the values of others.Based on the comprehensive evaluation system,this study analyzed and screened 47 broadleaf species of 40 genera of 25 families.There were 16 broadleaf species having the comprehensive evaluation scores of equal to or greater than2.4000,which were available as major tree species for edible fungi development of Guizhou Province,especially species such as Liriodendron chinense,Quercus acutissima,Alnus cremastogyne,Betula luminfera,Elaeocarpus duclouxii,Elaeocarpus sylvestris,Choerospondias axillaris.The 10 broadleaf tree species with comprehensive evaluation score of 2.1000≤Y 2.4000 were recommended as candidates for edible fungi production,while the 21 broadleaf species with the comprehensive evaluation score of less than 2.1000 were not recommended. 展开更多
关键词 Edible fungi raw material forest Excellent tree species Tree species selection Guizhou ProvinceHome
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Impact of Alternative Raw Materials on the Profitability of a Large-Scale Bio-Coal Pellet Plant in Finland 被引量:1
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作者 Jarno Fohr Raghu KC +1 位作者 Kalle Karttunen Tapio Ranta 《Journal of Sustainable Bioenergy Systems》 2019年第1期1-15,共15页
The aim of this paper was to compare the annual economic impact of a large-scale bio-coal pellet plant by raw material specifically for the Finnish Lakeland region. In this study, the total production volume of the th... The aim of this paper was to compare the annual economic impact of a large-scale bio-coal pellet plant by raw material specifically for the Finnish Lakeland region. In this study, the total production volume of the theoretical plant was 200,000 tons per year and the raw wood materials used were birch pulpwood, spruce pulpwood, pine pulpwood, and energy wood. These wood materials were young delimbed wood from early thinnings. The main goal of the paper was to illustrate that the energy content differences of raw wood materials affect the economic profitability of a bio-coal pellet plant at regional level. In this case, wood type also has a regional economic impact, which the pellet plant can influence through its raw wood material choices. The raw material comparison was based on measured data and not computational or literary data alone. The study found that lower solid wood energy densities caused higher relative costs for the total supply chain. A parallel phenomenon occurred with the required gross margin of the pellets, where lower energy content caused higher required gross margin for pellet sales. The gross margin was also sensitivity analyzed at different discount rates from 5% to 20%. At each required discount rate, the highest annual economic impact on the region was found for birch pellets, with values of 36.95 - 42.66 million €. Spruce pellets had the smallest annual economic impact, although it had the highest final pellet price in the same cases. The different economic effects were caused by the energy volumes sold. 展开更多
关键词 Bio-Coal PELLET Plant PROFITABILITY raw material Region
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Influence of Characteristics of Alumina-silicate Raw Materials on the Formation Process of Clinker
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作者 王亚丽 CUI Suping +2 位作者 LAN Mingzhang TIAN Guiping LIU Lingling 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2014年第5期966-971,共6页
The traditional alumina-silicate raw materials, for example, clays, in the precalcining technique of cement production, have been replaced by low grade and high silica content sandstones, shales, and industrial waste ... The traditional alumina-silicate raw materials, for example, clays, in the precalcining technique of cement production, have been replaced by low grade and high silica content sandstones, shales, and industrial waste residues, including fly ashes, slag, and others. The results are the change of compositions and characteristics of raw materials applied and a great effect on cement calcination process and clinker formation. In this work, the cement clinker formation process of different alumina-silicate raw materials to replace clay raw material was studied by chemical analysis, X-ray diffraction, differential thermal analysis, and high temperature microscope based on the characteristics of the alumina-silicate raw materials. The formation heat of the clinker was determined by the acid dissolution method. Influence of different alumina-silicate raw materials on the clinker burnability and formation process was studied. The results show that the changing of alumina- silicate raw materials, especially using industrial waste residues, can reduce the formation temperature of high temperature liquid phases, improve the burnability of raw materials, reduce the formation temperature and formation heat of clinker. And this study also observed the formation temperature and transformation of high temperature liquid phases in the heating process of raw materials by high temperature microscope. 展开更多
关键词 precalcining technique of cement production alumina-silicate raw materials burnability of raw materials high temperature liquid phase formation heat of clinker
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Evaluation of physicochemical properties as supporting information on quality control of raw materials and veterinary pharmaceutical formulations
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作者 Sara da Silva Anacleto Marcella Matos Cordeiro Borges +7 位作者 Hanna Leijoto de Oliveira Andressa Reis Vicente Eduardo Costa de Figueiredo Marcone Augusto Leal de Oliveira Barbara Juliana Pinheiro Borges Marcelo Antonio de Oliveira Warley de Souza Borges Keyller Bastos Borges 《Journal of Pharmaceutical Analysis》 SCIE CAS CSCD 2018年第3期168-175,共8页
This study aimed to show that the physicochemical proprieties obtained by Fourier transform infrared spectroscopy (FTIR), thermogravimetry (TG), and scanning electronic microscopy (SEM) can be useful tools for e... This study aimed to show that the physicochemical proprieties obtained by Fourier transform infrared spectroscopy (FTIR), thermogravimetry (TG), and scanning electronic microscopy (SEM) can be useful tools for evaluating the quality of active pharmaceutical ingredients (APIs) and pharmaceutical products. In addition, a simple, sensitive, and efficient method employing HPLC-DAD was developed for simulta- neous determination of lidocaine (LID), ciprofloxacin (CFX) and enrofloxacin (EFX) in raw materials and in veterinary pharmaceutical formulations. Compounds were separated using a Gemini Cm (250 mm×4.6 mm, 5μm) Phenomenex column, at a temperature of 25℃, with a mobile phase containing 10 mM of phosphoric acid (pH 3.29): acetonitrile (85.7:14.3, v/v) and a flow rate of 1.5 mL/min. Physicochemical characterization by TG, FTIR, and SEM of raw materials of LID, CFX, and EFX provided information useful for the evaluation, differentiation, and qualification of raw materials. Finally, the HPLC method was proved to be useful for evaluation of raw material and finished products, besides satisfying the need for an analytical method that allows simultaneous determination of EFX, CFX, and LID, which can also be extended to other matrices and applications. 展开更多
关键词 HPLC Physicochemical characterization Quality control Veterinary pharmaceutical formulation raw material
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Agro-Industrial Waste as a Source of Raw Material:Eggshell and Ash of Agave salmiana Useful for the Synthesis of Hydroxyapatite
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作者 Nora Elizondo-Villarreal Luz HVerástegui-Dominguez +5 位作者 Jose JQuijano-Briones Francisco JVázquez-Rodríguez Eden Rodríguez-Castellanos Enrique López-Cuellar Ernesto Torres-Lopez Victor MCastaño-Meneses 《Journal of Renewable Materials》 SCIE EI 2022年第12期3559-3572,共14页
Agave salmiana ash and poultry eggshell powder as CaO sources were used for obtaining nanostructured hydro-xyapatite(HAP).The synthesis was carried out by the Green Chemistry Hydrothermal Biosynthesis at 180℃ with a ... Agave salmiana ash and poultry eggshell powder as CaO sources were used for obtaining nanostructured hydro-xyapatite(HAP).The synthesis was carried out by the Green Chemistry Hydrothermal Biosynthesis at 180℃ with a pH of 5,by reacting CaO from Agave Salmiana ash and Eggshell powder,with dibasic caldium phosphate(CaH-PO_(4)+2H_(2)O)in an aqueous solution,with Aloe barbadensis extract.The product was characterized by X-ray dif-fraction,Fourier transform infrared spectroscopy(FT-IR),Scanning Electron Microscopy(SEM),and Transmission Electron Microscopy(TEM).The size and shape of the hydroxyapatite particles changed dramati-cally in the presence of Aloe barbadensis.Large crystals of Hydroxyapatite were observed when Eggshell powder and Agave salmiana ash were used as raw materials in the presence of the Aloe barbadensis surfactant.Crystals with shapes of ribbons and plates from 1 micrometers to 8 micrometers were observed when using the eggshell powder in the presence of Aloe bar badensis and,in the case of Agave salmiana ash in the presence of Aloe bar-badensis,crystals with shapes of quadra ngular prisms and hexagonal(polyhedra)with sizes from 2 micrometers to 20 micrometers were observed.Hydroxyapatite was therefore successfully biosynthesized by a green and sus-tainable method that reduces the environmental impact. 展开更多
关键词 HYDROXYAPATITE raw materials Agave salmiana EGGSHELL Aloe barbadensis surfactant
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Studies on Silicon-Containing Fragrance Raw Materials( Ⅱ )——Syntheses and Odors of 4-Trimethylsilylcyclohex-3-enol and 4-Trimethylsilylcyclohexanol Derivatives
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作者 TANG Shi-xiong, XUE Jie-you, WU Jun-jun, CAO Yu-rongZHI Jin-fang WANG Xiao-lan (Department of Chemistry, Nankai University, Tianjin, 300071) 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 1993年第2期121-126,共6页
1-Substituted- 4-trimethylsilylcyclohex- 3-enol and 1-substituted- 4-trimetnylsilyl-cyclohexanol, 4-trimethylsilylcyclohex-3-enol and 4-trimethylsilylcyclohexanol, and some of their esters and carbon counterparts were... 1-Substituted- 4-trimethylsilylcyclohex- 3-enol and 1-substituted- 4-trimetnylsilyl-cyclohexanol, 4-trimethylsilylcyclohex-3-enol and 4-trimethylsilylcyclohexanol, and some of their esters and carbon counterparts were synthesized. Structures of the nineteen new compounds were determined by 1H NMR, IR and MS. Their odors are evaluated. 展开更多
关键词 Silicon-containing fragrance raw materials SYNTHESES Odor evaluation
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Countermeasures for dealing with the change of blast furnace raw materials
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作者 LIN Chengcheng WANG Shibin 《Baosteel Technical Research》 CAS 2009年第1期40-45,共6页
Following the dramatic increase of iron and steel output ,iron ore is increasingly in short supply ,and the quality of blast furnace (BF) raw materials is increasingly inferior. All these factors have a strong impac... Following the dramatic increase of iron and steel output ,iron ore is increasingly in short supply ,and the quality of blast furnace (BF) raw materials is increasingly inferior. All these factors have a strong impact on the BF operation. According to the analysis of the raw material properties at Baosteel and the combination of the BF smelting mechanism and its operational practice, this study probes into the operational countermeasures for dealing with the change of raw materials and puts forward optimized BF control technology to ensure the operation of BFs is stable and smooth. 展开更多
关键词 BF raw material operational technology PERMEABILITY
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Preliminary Study on Raw Materials Exploitation at Donggutuo Site,Nihewan Basin,North China
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作者 PEI Shu-wen HOU Ya-mei 《人类学学报》 CSCD 北大核心 2002年第S1期53-66,共14页
The present study examines material quarrying, utilization, and exploitation strategy with respect to availability, quality and distribution at Donggutuo, a Lower Pleistocene archeological site in the Nihewan Basin of... The present study examines material quarrying, utilization, and exploitation strategy with respect to availability, quality and distribution at Donggutuo, a Lower Pleistocene archeological site in the Nihewan Basin of North China. Through identification of the bedrocks in the vicinity, the analysis reveals that raw materials available at the Donggutuo site are mainly chert, dolomicrite, siliceous dolomite, siliceous limestone, tectonic breccia, quartzite and intermediate lava. Related documents and a geological survey of the area demonstrate that the chert was quarried from dolomite within the Gaoyuzhuang Formation of the Mesoproterozoic Changcheng Group, and the quartzite from the Yousuopu Formation of the Archeozoic Qianxi Group, as well as from Jurassic volcanic lava. Fractures formed by tectonic movements of the Yanshan Stage and the Himalaya Stage made it convenient to quarry these materials. It is observed that fragmentary rock pieces were directly collected and quarried from local fracture belts and that this became the principal strategy of raw material exploitation adopted by the Donggutuo toolmakers. In general, raw materials were not efficiently used, and many of them could have been reduced, retouched and used again. Some suggestions are also proposed to improve the understanding of earlyhumans’ tool complex in the Nihewan Basin. 展开更多
关键词 raw materials Donggutuo Lower Pleistocene
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Influence of Raw Material on the Properties of MgO-Al_2O_3-Cr_2O_3 Ramming Mixes
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作者 YANG Leqin, WANG Li, LIN Wanruo, YANG Zhibin and ZHANG Fengli(Luoyang Refractory Group Co. , Ltd. Luoyang,Henan 471039 China) 《China's Refractories》 CAS 2002年第3期18-27,共10页
Mg0-Al2O3-Cr2O3 ramming mixes made of different raw materials have different mineral structure and different physical properties though with the identical particle size distribution, the same amount of binder and chem... Mg0-Al2O3-Cr2O3 ramming mixes made of different raw materials have different mineral structure and different physical properties though with the identical particle size distribution, the same amount of binder and chemical composition . The residual carbon content of the fused magnesia-chrome material made in reducing atmosphere is very high, if this material is used in the MgO-Al203-Cr2O3 ramming mix , it would cause spalling of the furnace lining during drying-out. 展开更多
关键词 Ramming mix raw material Magnesia-alumina-chrome system
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