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Study on Mechanical Properties of High Fine Silty Basalt Fiber Shotcrete Based on orthogonal design

Journal of Renewable Materials 2023年第8期11卷 3351-3370页

作者： Jinxing Wang Yingjie Yang Xiaolin Yang Huazhe Jiao Qi Wang Liuhua Yang Jianxin Yu Fengbin Chen State Collaborative Innovation Center of Coal Work Safety and Clean-Efficiency Utilization School of Civil EngineeringHenan Polytechnic UniversityJiaozuo454003China Provincial Key Laboratory of Underground Engineering and Disaster Prevention and Control School of Civil EngineeringHenan Polytechnic UniversityJiaozuo454003China School of Civil Engineering Henan Polytechnic UniversityJiaozuo454003China Key Laboratory of Mine Ecological Effects and Systematic Restoration Ministry of Natural ResourcesBeijing100081China

In order to improve the comprehensive utilization rate of highﬁnes sand(HFS)produced by the mine,full solid waste shotcrete(HFS-BFRS)was prepared with HFS asﬁne aggregate in cooperation with basaltﬁber(BF).The strength growth characteristics of HFS-BFRS were analyzed.And theﬁtting equation of compressive strength growth characteristics of HFS-BFRS under the synergistic effect of multiple factors was given.And based on the orthogonal experimental method,the effects on the compressive strength,splitting tensile strength andﬂex-ural strength of HFS-BFRS under the action of different levels of inﬂuencing factors were investigated.The effect of three factors on the mechanical properties of HFS-BFRS,3,and 28 d,respectively,was revealed by choosing the colloidal sand ratio(C/H),basaltﬁber volume fraction(BF Vol)and naphthalene high-efﬁciency water reducing agent(FDN)as the design variables,combined with indoor tests and theoretical analysis.The results show that the sensitivity of the three factors on compressive strength andﬂexural strength is C/H>FDN>BF Vol,and split-ting tensile strength is BF Vol>FDN>C/H.Finally,theﬁtting ratio of HFS-BFRS was optimized by the factor index method,and the rationality was veriﬁed by theﬁeld test.For theﬂuidity of HFS-BFRS,the slump can be improved by 139%under the action of 1.2%FDN,which guarantees the pump-ability of HFS-BFRS.

关键词： Solid wastes recycling high-ﬁne silt basaltﬁber total solid waste shotcrete orthogonal design

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orthogonal design to sift the optimal parameter of Neiguan acupuncture for cerebral infarction

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Neural Regeneration Research 2013年第28期8卷 2641-2648页

作者： Yanan Zhang Sha Yang Xiaonong Fan Shu Wang Nina He Lingxin Li Ding Luo Xuemin Shi First Teaching Hospital of Tianjin University of Traditional Chinese Medicine Acupuncture and Moxibustion Research Institute of Tianjin University of Traditional Chinese Medicine Key Laboratory of Cerebropathy Acupuncture Therapy of State Administration of Traditional Chinese Medicine Tianjin Key Laboratory of Acupuncture & Moxibustion Science Three-level Laboratory of Acupuncture Dose-Effect Relationship State Administration of Traditional Chinese Medicine Wuhai Hospital of Traditional Chinese Medicine Department of Rehabilitation Medicine West China Medical SchoolWest China Hospital Sichuan University Postgraduate School Tianjin University of Traditional Chinese Medicine

The individual difference and non-repeatability in acupuncture have not only restricted the devel- opment of acupuncture, but have also affected the specificity of acupoints. The present study used instruments to control needle depth, lifting and thrusting frequency, and the duration of acupuncture. Effects of the quantified acupuncture were observed at Neiguan （PC6） with different stimulation parameters. A frequency of 1, 2, or 3 Hz and duration of 5, 60, or 180 seconds were used to observe cerebral blood flow and ratio of infarct volume recovery. Results showed that stimulation at Neiguan with a frequency of 1 Hz and long duration of 180 seconds or 2/3 Hz and long duration of 5/60 seconds significantly increased cerebral blood flow and decreased the ratio of infarct volume. In- teractions between frequency and duration play a critical role in quantified acupuncture therapy.

关键词： neural regeneration acupoint quantified acupuncture Neiguan middle artery occlusion injury lift-ing and thrusting method orthogonal design lifting and thrusting frequency acupuncture duration grants-supported paper neuroregeneration

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orthogonal design for optimization of pigment extraction from surface sediments of the Changjiang River Estuary

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Acta Oceanologica Sinica 2011年第4期30卷 33-42页

作者： ZHAO Jun YAO Peng YU Zhigang Thomas S Bianchi Key Laboratory of Marine Environment and Ecology Ministry of Education Ocean University of China Qingdao 266100 China Department of Oceanography Texas A ＆ M University College Station TX 77843 USA Key Laboratory of Marine Chemistry Theory and Technology Ministry of Education Ocean University of China Qingdao 266100 China Institute of Marine Organic Geochemistry College of Chemistry and Chemical Engineering Ocean University of China Qingdao 266100 China

Using a suitable solvent for extracting pigments from sediment for high performance liquid chromatography（HPLC） analysis is critical for obtaining qualitative and quantitative estimates of phytoplanktonic and benthic algal biomass,as well as community composition. Five methodological factors（sample dehydration,extraction solvent,extraction duration,number of extractions,and ratio of solvent volume：sample weight） were studied using an L 9（3 4 ） orthogonal design in a sedimentary pigment extraction experiment on samples collected from the Changjiang large-river delta-front estuary（LDE）,using HPLC analysis. The results show that the optimal extraction method for sedimentary pigments should include freeze-drying samples prior to extraction. The effects of different factors on sedimentary pigment extraction were separated by the L 9（3 4 ） orthogonal design experiments and showed that the extraction solvent was the most important,with extraction duration the second most important,and numbers of extraction and ratio of solvent volume：sample weight was the least important. The mixed solvent treatment comprised of acetone,methanol and water（80：15：5,by volume） was best for polar pigment extraction,with 100% acetone better for apolar pigments. For most pigments employed in this study（i.e.,peridinin,fucoxanthin,alloxanthin,diatoxanthin,zeaxanthin,pheophytin-a and β-carotene） ,3 h was found to be enough time for extraction from these deltaic sediments. However,for chlorophyll-a,the most important pigment used for estimating algal biomass,12 h was needed. A small amount of solvent（3 ml） with duplicate extractions obtained the greatest amount and diversity of pigments. Unfortunately,no extraction method was found to be suitable for all pigments in sediments. The choice of extraction procedure should be made in accordance with the objective of each study,taking into consideration the properties of sediments and pigments in question.

关键词： sedimentary pigments extraction orthogonal design HPLC Changjiang River Estuary

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Application of orthogonal design in the experiment of plasma arc powder surfacing technology

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China Welding 2001年第2期10卷 57-61页

作者：张德勤杜则裕云绍辉 Dept. of Mech. and Electronic Eng. University of Petroleum Dongying 257061 China

In this paper, the influence of plasma arc powder surfacing technical parameters on the property of layer is defined using the orthogonal design. By the orthogonal polynomial regression, when plasma arc powder surfacing is used on the surface of the X65 steel plate with the Fe-07 alloy powder, the optimum technical parameters are the following: I=180～190 A , G=41.5 g/min , v=102 mm/min , T_0=350 ℃ , Q_l=280 L/h , Q_s=400 L/h . Further, analysis of the cracking test data showed that the cracking preheat temperature is 350 ℃ .

关键词： orthogonal design plasma arc powder surfacing orthogonal polynomial regression optimum technical parameters cracking test

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Optimizing SSR-PCR system of Panax ginseng by orthogonal design

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Journal of Forestry Research 2007年第1期18卷 31-34页

作者： YANG Tian-tian MU Li-qiang WANG Jun School of Forestry of Northeast Forestry University Harbin 150040 P. R. China

An orthogonal design was used to optimize SSR-PCR amplification system using Panax ginseng genomic DNA as template. Four levels of five factors （DNA template, Taq DNA polymerase, Mg^2＋, primer, and dNTP） and annealing temperature have been tested separately in this system. The results demonstrated the reaction efficiency was affected by these factors. Based on the results, a stable, productive and reproducible PCR system and cycling program for amplifying a ginseng SSR locus were obtained： 20 μL system containing 1.0 U Taq DNA polymerase, 2.0 mmol·L^-1 Mg^2＋, 0.2 mmol·L^-1 dNTPs, 0.3 μmol·L^-1 SSR primer, 60 ng· μla^-1 DNA template, performed with a program of 94℃ for 5 min, 94℃ for 30 s, annealing at 56.3℃ for 30 s, 72℃ for 1 min, 37 cycles, finishing at 72℃ for 7 min, and storing at 4℃.

关键词： Panax ginseng C.A.Meyer orthogonal design SSR-PCR

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Optimized design of biconical liner by orthogonal method

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Journal of Beijing Institute of Technology 2015年第1期24卷 8-17页

作者：曲忠伟颜事龙沈兆武马宏昊 College of Science Anhui University of Science and Technology Department of Modern Mechanics University of Science and Technology of China

A biconical liner was optimized to improve its penetration ability. Its formation and pene- tration mechanism was studied through numerical simulation and experiments. And the influence of different liner geometry sizes on the jet performance was analyzed using the orthogonal method. The liner formed the high-speed jet with an explosively formed projectile. The small angle 2a remarkably influenced the jet speed which was inversely proportional to 2a. And the liner thickness t＇ and large angle 2β had highly significant effect on the projectile speed. The liner was optimized at t＇ = 0. 14 cm, 2α = 50°, 2β = 135°, N = 0. 4 or 0. 5, when its jet speed respectively is at 6 613 m/s and 6 839 m/s and projectile speed is at 2 247 m/s and 2 095 m/s, steel target penetration is at 8. 24 cm and 8. 31 cm, and aperture is in 2.12 cm and 2.08 cm. The results show that target is penetrated by the high-speed jet and high-speed projectile resulting into double damages. The penetration ability is improved greatly.

关键词： biconical liner orthogonal design numerical simulation jet explosively formed pro-jectile

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Effects of orthogonal Heat Treatment on Microstructure and Mechanical Properties of GN9 Ferritic/Martensitic Steel

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Chinese Journal of Mechanical Engineering 2023年第6期36卷 289-300页

作者： Tingwei Ma Xianchao Hao Ping Wang Key Laboratory of Electromagnetic Processing of Materials Ministry of EducationNortheastern UniversityShenyang 110004China Yingkou Institute of Technology Yingkou 115014China CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China

Microstructure and mechanical properties of GN9 Ferritic/Martensitic steel for sodium-cooled fast reactors have been investigated through orthogonal design and analysis.Scanning electron microscopy(SEM),transmission electron microscopy(TEM),differential scanning calorimeter(DSC),tensile and impact tests were used to evaluate the heat treatment parameters on yield strength,elongation and ductile-to-brittle transition temperature(DBTT).The results indicate that the microstructures of GN9 steel after orthogonal heat treatments consist of tempered martensite,M23C6,MX carbides and MX carbonitrides.The average prior austenite grains increase and the lath width decreases with the austenitizing temperature increasing from 1000°C to 1080°C.Tempering temperature is the most important factor that influences the dislocation evolution,yield strength and elongation compared with austenitizing tempera-ture and cooling methods.Austenitizing temperature,tempering temperature and cooling methods show interactive effects on DBTT.Carbide morphology and distribution,which is influenced by austenitizing and tempering tempera-tures,is the critical microstructural factor that influences the Charpy impact energy and DBTT.Based on the orthogo-nal design and microstructural analysis,the optimal heat treatment of GN9 steel is austenitizing at 1000°C for 0.5 h followed by air cooling and tempering at 760°C for 1.5 h.

关键词： Ferritic/Martensitic steel orthogonal design M23C6 carbide Ductile-to-brittle transition temperature

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Operational effectiveness evaluation based on the reduced conjunctive belief rule base

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Journal of Systems Engineering and Electronics 2022年第5期33卷 1161-1172页

作者： ZHANG Ziwei GUO Qisheng DONG Zhiming LIU Hongxiang GAO Ang QI Pengcheng Military Exercise and Training Center Army Academy of Armored ForcesBeijing 100072China Unit 32128 of the PLA Ji’nan 250024China Department of Equipment Support and Remanufacture Army Academy of Armored ForcesBeijing 100072China

To address the issue of rule premise combination explosion in the construction of the traditional complete conjunctive belief rule base(BRB),this paper introduces an orthogonal design method to reduce the conjunctive BRB.The reasoning method based on reduced conjunctive BRB is designed with the help of the conversion technology from conjunctive BRB to disjunctive BRB.Finally,the operational mission effectiveness evaluation is taken as an example to verify the proposed method.The results show that the method proposed in this paper is feasible and effective.

关键词： operational effectiveness evaluation reduced conjunctive belief rule base(BRB) orthogonal design evidence reasoning(ER)

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The investigation of multiple factors on elastic anisotropy of artificial shale based on the orthogonal experiment

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Petroleum Science 2023年第5期20卷 2773-2783页

作者： Fei Gong Liang-Liang Gao Guan-Gui Zou Su-Ping Peng Yi-Chen Song College of Geoscience and Surveying Engineering China University of Mining and Technology(Beijing)Beijing100083China State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China

Elastic anisotropy of shales is critical to accurate constraints for rock physical models,quantitative interpretation and hydraulic fracturing.However,the causes of elastic anisotropy of shales are very complicated,and the understanding of how multiple influence factors affect the elastic anisotropy of shales is still not clear.Hence,the orthogonal experiment,as an effective multiple factors experimental method,is adopted in this study to analyze the effect of multiple factors for shale elastic anisotropy.Three factors,clay content,organic matter(OM)content and compaction stress are selected as independent variables,the orthogonal test table L_(16)(4^(3))with four levels for each factor is adopted.According to the designed orthogonal table,sixteen artificial shales are constructed based on the cold-pressing method,and all the dry artificial shales are measured by the ultrasonic measurements.The influence of each factor on the elastic anisotropy and the sensitivity orders of three factors are obtained using the range analysis.The orders of sensitivity for selected factors follow the sequence clay content>compaction stress>OM content for velocity anisotropy parameters.The compaction mechanism of artificial shales is also discussed by the compaction factor,which are positively correlated with the velocity anisotropy parameters.The clay platelets orientation distribution function(ODF)of samples is evaluated by a theoretical model,the ODF coefficients are significantly affected by the clay content and compaction stress,and W200 are much more sensitive to these factors than W400.The results can provide a critical rock physics basis for quantitative interpretation and reservoir prediction of the low-maturity or maturity shale reservoir.

关键词： Shale Elastic anisotropy Multiple factors orthogonal design

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Establishment of ISSR Reaction System for Armeniaca sibirica Based on orthogonal design

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Agricultural Biotechnology 2012年第3期1卷 1-3,6页

作者： Jinjun BAI College of Chemistry and Chemical Engineering Yulin University

[ Objective] The aim was to establish the optimal ISSR-PCR system for Armeniaca sibirica. [ Method] With Armeniaca sibirica as experimental materi- al, genomic DNA was extracted from tender leaves using CTAB method. orthogonal experiment L9 （34） was conducted with four factors （Mg2＋ , dNTPs, primers, Taq DNA polymerase） in ISSR-PCR system ofArmeniaca sibirica at three levels. The results of orthogonal experimental design were analyzed by using SPSS statisti- cal software. [Result] Different levels of various factors all had significant effects on PCR results, specifically, the amount of Taq DNA polymerase had the most significant effect. The optimal ISSR-PCR reaction system of Armeniaca sibirica was established ： the total PCR reaction volume was 20 ~1, containing 1.0 U of Taq DNA polymerase, 1.0 mmol/L MgCI2,0.15 mmol/L dNTPs and 0.30 ~mol/L primers. Validation result shows that this reaction system is very stable and strongly operational. [ Conclusion] This study laid the foundation for genetic diversity analysis and germplasm resource investigation of Arnniaca sibirica.

关键词： Armeniaca sibirica PCR ISSR orthogonal design

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