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一种人工天青石矿的浮选及夹带行为的统计分析(英文)

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Transactions of Nonferrous Metals Society of China 2012年第1期22卷 199-205页

作者： Taki güLER ünal AKDEMR Mining Engineering Department Mugla University Mining Engineering Department Cumhuriyet University

研究浮选参数对泡沫浮选脉石回收率的影响,测试了pH=10时起泡剂类型和捕收剂用量对浮选性能的影响。采用方差分析了测试结果。在用油酸钠作捕收剂的情况下,亲水性矿物的浮选主要是由于Ca+2离子对石英的活化产生的疏水性而导致的夹带作... 详细信息

研究浮选参数对泡沫浮选脉石回收率的影响,测试了pH=10时起泡剂类型和捕收剂用量对浮选性能的影响。采用方差分析了测试结果。在用油酸钠作捕收剂的情况下,亲水性矿物的浮选主要是由于Ca+2离子对石英的活化产生的疏水性而导致的夹带作用所引起的;夹带和矿泥包裹层对浮选也有一定的影响。在浮选产物中脉石的夹带程度随着矿石颗粒粒度的减小而增加。实验结果表明,通过增大捕收剂用量、缩短浮选时间,可以减小水流夹带作用,提高浮选的选择性。

关键词：天青石浮选时间捕收剂浓度起泡剂类型夹带粒径方差分析

Flexible breeding performance under unstable climatic conditions in a tropical passerine in Southwest China

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Zoological Research 2021年第2期42卷 221-226页

作者： Chen-Yang Liu Uriel gélin Ru-Chuan He Huan Li Rui-Chang Quan Center for Integrative Conservation Xishuangbanna Tropical Botanical GardenChinese Academy of SciencesXishuangbannaYunnan 666303China University of Chinese Academy of Sciences Beijing 100049China

DEAR EDITOR,Parents may adjust their breeding time to optimize reproductive output and reduce reproductive costs associated with unpredictable climatic conditions,especially in the context of global *** breeding performance of tropical bird species in response to local climate change is relatively understudied compared with that of temperate bird species.

关键词： breeding bird climatic

The protoplasts isolation,culture and shoots regeneration of broccoli(Brassica oleracea ***)

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华北农学报 1993年第S2期8卷 28-34页

作者：王怀名 A.Schfer-Menuhr g.Mix-Wagner

Eight F1-hybrid cultivars of broccoli were *** obtained cell division,celled colonies and p-calli in 5 cultivars,roots and shoots regeneration in one *** leavesof propagated plantlets in vitro were cut into 1—2mm pieces,isolated with an enzyme solutioncontaining 2% cellulase and 1%macerase on a rotary shaker（50 rpm,21℃,3h,2500 lux light）,and purified with a 0.5M sucrose *** purified protoplasts were placed on a drop of 1%agarose.2—3 ml liquid medium was added around the agarose drops,and all of the cultures wereincubated at 25℃ under light（4000 lux）for 16 hours.3—5 days after isolation the cell divisionwas *** 7 days after incubation 4 multicellular colonies were *** 3—5 wksome p-calli were *** the p-calli were 2—3 mm in diameter it was transferred to asolidified *** they were developed to 1 cm in diameter they were transferred on a re-generation *** 5 months after incubation some roots and shoots grown from the calliwere

关键词： protoplasts culture shoots regeneration broccoli( Brassica oleracea var. italica )

Effect of 0.05% topical cyclosporine for the treatment of symptomatic subepithelial infiltrates due to adenoviral keratoconjunctivitis

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International Journal of Ophthalmology(English edition) 2016年第4期9卷 634-635页

作者： Ilkay Kilic Muftuoglu Yonca A.Akova Sirel g.gungor Department of Ophthalmology Istanbul Training and Research Hospital Department of Ophthalmology Bayindir Kavaklidere Hospital Department of Ophthalmology Baskent University

Dear Sir,Iam Yonca ***,MD-from the Department of Ophthalmology,Bayindir Kavaklidere Hospital,Turkey.I wrote this letter to evaluate the efficacy of 0.05%topical cyclosporine A（CsA）eye drops（Restasis Allergan,Irvine,USA）in symptomatic patients with recurrent subepithelial infiltrates（SEIs）due to adenoviral keratoconjunctivitis following steroid eye drops tapering or discontinuation.

关键词： subepithelial Effect of 0.05 cyclosporine symptomatic steroid letter Irvine drops recurrence corneal

Effect of Surface Polishing Treatment on the Fatigue Performance of Shot-Peened Ti–6Al–4V Alloy

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Acta Metallurgica Sinica(English Letters) 2017年第7期30卷 630-640页

作者： Z.g.Liu T.I.Wong W.Huang N.Sridhar S.J.Wang Institute of High Performance Computing A＊STAR 1 Fusionopolis Way Singapore 138632 Singapore Institute of Materials Research and Engineering A＊STAR 2 Fusionopolis Way Singapore 138634 Singapore

In this study, shot peening is applied to the titanium alloy Ti–6Al–4V, and the surface treatment effect on fatigue life of shot-peened specimens under high cycle loading is investigated. The induced residual stress is measured by using the orbital hole-drilling method. Surface profilometer and optical microscopy are employed to characterize the surface roughness and morphology. The deformed microstructure layers of the shot-peened specimens are investigated by using scanning electron microscopy. Experiments reveal that the fatigue life of Ti–6Al–4V is improved by the shot peening process, and the surface pre-peening polishing. The combination of pre-and post-peening polishing treatments further improves fatigue life of Ti–6Al–4V specimens. The present work provides useful guidelines for developing more efficient shot peening strategies.

关键词： Shot peening Surface polishing treatment Fatigue Residual stress Ti–6Al–4V alloy

EXTRAPOLATION AND A-POSTERIORI ERROR ESTIMATORS OF PETROV-gALERKIN METHODS FOR NON-LINEAR VOLTERRA INTEgRO-DIFFERENTIAL EQUATIONS

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Journal of Computational Mathematics 2001年第4期19卷 407-422页

作者： Shu-hua Zhang (Department of Mathematical Sciences, University of Alberta, Edrmonton, Alberta, Canada T6g 2g1) Tao Lin (Department of Mathematics, Virginia Tech, Blacksburg VA 24061) Yan-ping Lin (Department of Mathematical Sciences, University of Alberta University of Alberta 加拿大 T6G 2G1 Virginia Tech 美国 VA 24061 University of Alberta 加拿大 T6G 2G6

In this paper we will show that the Richardson extrapolation can be used to enhance the numerical solution generated by a Petrov-galerkin finite element method for the initial value problem for a nonlinear Volterra integro-differential equation. As by-products, we will also show that these enhanced approximations can be used to form a class of posteriori estimators for this Petrov-galerkin finite element method. Numerical examples are supplied to illustrate the theoretical results.

关键词： Volterra integro-differential equations Petrov-galerkin finite element methods Asymptotic expansions Interpolation post-processing A-posteriori error estimators.

Effect of high anodic polarization on the passive layer properties of superduplex stainless steel friction stir welds at different chloride electrolyte pH values and temperatures

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International Journal of Minerals,Metallurgy and Materials 2019年第6期26卷 710-721页

作者： L.A.Santa-Cruz g.Machado A.A.Vicente T.F.C.Hermenegildo T.F.A.Santos Department of Mechanical Engineering Universidade Federal de PernambucoAv.da Arquiteturas/n50740-550RecifePEBrazil Center of Nanotechnology Centro de Tecnologias Estratégicas do NordesteCETENERecifePEBrazil Department of Chemical Engineering Universidade de Sao PauloSao PauloSPBrazil

The conditions used for friction stir welding of duplex stainless steels determine the resulting mechanical and corrosion performance of the *** study investigates the corrosion resistance of UNS S32750 and S32760 superduplex stainless steels(SDSSs)joined by friction stir welding,employing cyclic polarization,Mott–Schottky,and microscopy techniques for *** microscopy images indicated the presence of a deleterious intermetallic phase after electrolytic etching of S32760,as well as decreased corrosion *** presence of molybdenum in the steels promoted better passive behavior at low *** Mott–Schottky curves revealed p-n heterojunction behavior of the passive *** acquired after the polarization test by scanning electron microscopy showed higher passivation propensity with increases of temperature and pH.

关键词： superduplex stainless steel friction stir welding corrosion resistance cyclic polarization Mott–Schottky

STUDY ON CHEMICAL COMPOSITIONS OF 19 L AND LL CHONDRITES AND ITS APPLICATION IN TAXONOMY

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Science China Chemistry 1986年第2期29卷 214-224页

作者：王道德,g.W.KALLEMEYN,J.T.WASSON guiyang Institute of geochemistry Academia Sinica Institute of geophysics and Planetary Physics University of California Los Angeles CA 90024 U. S. A. Institute of geophysics and Planetary Physics University of California Los Angeles CA 90024 U. S. A.

Reported in this paper are precise INAA data on 19 L and LL chondrites (7 Chinese chondrites and 12 from other countries). The L and LL chondrite data normalized to Mg and to CI chondrite indicate that for several lithophiles (V, Al, Cr and Mn), the extent of scatter is low, similar to that observed in carbonaceous chondrites. The average concentration of siderophiles in the LL group is lower than that in the L *** the basis of olivine composition and atomic ratio (Ir/Au), we reclassify the five previously labeled L ehondrites as LL members. The atomic ratios of Ir/Au in the LL chondrites are lower than those in the L chondrites (the division is set at an Ir/Au ratio of 2.5). The atomic ratio of Ir/Au appears to be a useful classification parameter for ordinary chondrites. Therefore, it can be considered as a new taxonomic parameter. Of the elements studied, Br, a high volatile, seems most likely to show thermometamorphic effects, depending on petrologic types. The concentration of bromine and the

关键词： INAA STUDY ON CHEMICAL COMPOSITIONS OF 19 L AND LL CHONDRITES AND ITS APPLICATION IN TAXONOMY Ni FeO La than Co

Neutrosophicκ-Structures in Ordered Semigroups

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Computer Modeling in Engineering & Sciences 2022年第5期130卷 979-999页

作者： g.Muhiuddin K.Porselvi B.Elavarasan D.Al-Kadi Department of Mathematics Faculty of ScienceUniversity of TabukTabuk71491Saudi Arabia Department of Mathematics Karunya Institute of Technology and SciencesCoimbatore641114India Department of Mathematics and Statistic College of ScienceTaif UniversityTaif21944Saudi Arabia

In general,ordered algebraic structures,particularly ordered semigroups,play an important role in fuzzification in many applied areas,such as computer science,formal languages,coding theory,error correction,***,the concept of ambiguity is important in dealing with a variety of issues related to engineering modeling problems,network theory,decision-making problems in real-life situations,and so *** theories have been developed by various researchers to overcome the difficulties that arise from uncertainty,including fuzzy sets,intuitionistic fuzzy sets,probability,softsets,neutrosophic sets,***,we focus solelyonneutrosophic set *** ordered semigroups,we define and investigate the properties of neutrosophicκ-ideals and neutrosophicκ-interior *** also use neutrosophicκ-ideals and neutrosophicκ-interior ideals to characterize ordered semigroups.

关键词： Ordered semigroup ideals neutrosophicκ-structures neutrosophicκ-ideals neutrosophicκ-interior ideals