近代物理学演变中的模写

以近代物理学发展与演变的理论和实践为依据,探讨了物理学模写在近代物理学演变中的作用及转换规律,认为新模写是在旧模写基础上的更新和衍生.

朱、张思想异同及理学演变--《癸巳论语说》之辩与《四库提要》之误

张栻《论语解》是在与朱熹的切磋中反复修改而成,由此形成了癸巳初本与淳熙改本之别,四库馆臣无见于此而得出的朱张意气之争、朱子之辩未足为据等观点不合事实。朱、张《论语》之辩反映出二者为学之别:南轩尚固守谢、杨之矩步,囿于以理学解经;朱子则突破洛学,会通汉学,着手建立融理学与经学、汉学与宋学为一体的经学新典范。朱、张之辩启示我们,应以历时动态的眼光来理解学者的思想演变,对理学思想的同一性与差异性持有相应的认识,如朱张学术理念的差异即直接影响了理学思潮之消长演变,且于今日儒学之述作仍具参照意义。

从管理学和经济学理论视角分析企业社会责任内涵演变

企业社会责任是一个随着社会、经济发展而不断充实其内涵的管理学、经济学词汇,从历史演变的角度来看,一个国家经济制度安排不同,其决定不同的企业社会责任内涵,也即企业社会责任由于不同的制度环境,不同的企业形成和发展路径,导致不同国家、不同历史时期内涵的多样性和差异性,也决定企业在承担社会责任方面的不同态度。

从神仙传记看早期道教修仙伦理的演变

通过对早期神仙传记的研究可以看到,早期道教的修仙观念中存在着明显的伦理缺陷,这种缺陷与早期道教的特殊人群成仙思想以及技术成仙理论直接相关,其表现就是道教伦理的作用被漠视。但随着道教的发展,伦理在修仙中的作用被逐渐重视,并发展出新的道教修仙思想。道教的修仙理论,如同道教本身一样,从来就是一个由粗放到精致的逐渐发展过程,并且包含了许多不同甚至矛盾的因素。

Effect of post-weld heat treatment on microstructure and mechanical properties of welded joints of 6061-T6 aluminum alloy

6061 aluminum alloy T-joints were welded by double-pulsed MIG welding process. Then, the post-weld heat treatment was performed on the welded T-joints. The weld microstructure under different aging temperature and time was investigated by transmission electron microscopy and scanning electron microscopy. The mechanical properties were examined by hardness test and tensile test. The results showed that the micro-hardness was sensitive to heat treatment temperature and time. Increasing temperature was beneficial to the shortening of peak aging time. There were a large number of dislocations and few precipitates in the welded joints. With the increase of post-weld heat treatment temperature and time, the density of dislocation decreased. Meanwhile, the strengthening phase precipitated and grew up gradually. When the post-weld heat treatment temperature increased up to 200℃, large Q' phases were observed. And they were responsible for the peak value of the micro-hardness in the welded joints.

Evolution of second phases and mechanical properties of 7075 Al alloy processed by solution heat treatment

The effects of solution treatment on the evolution of the second phases and mechanical properties of7075Al alloy werestudied with scanning electron microscopy(SEM),energy dispersive X-ray spectrometry(EDS),differential scanning calorimetry(DSC),hardness and tensile tests.The results show that Mg(Zn,Cu,Al)2phases gradually dissolve into the matrix,yet the size andmorphology of Al7Cu2Fe phase exhibit no change with the increase of the solution treatment temperature and time due to its highmelting point.When the solution treatment temperature and time continue to increase,the formation of coarse black Mg2Si particlesoccurs.Compared to the as-cast alloy,the microhardness,tensile strength,and elongation of the sample under solution heat treatmentat460°C for5h are increased by55.1%,40.9%and109.1%,respectively.This is because the eutectic Mg(Zn,Cu,Al)2phases almostcompletely dissolve and basically no coarse black Mg2Si particles are formed.

Quantitative analysis on microstructure and high temperature fracture mechanism of 2.6vol%TiBw/Ti6Al4V composites with equiaxed microstructure after heat treatment

In this paper,the 2.6 vol%TiBw/Ti6Al4V composites with network architecture were fabricated by hot press sintering(HPS)at 1100℃ for 1 h,and the quantitative relationships between phases and heat treatment temperatures were established.The results showed that the volume fraction phases changed linearly with a range of solution temperature(930-1010℃)and aging temperature(400-600℃).Moreover,the composites with equiaxed microstructure were obtained due to the static recrystallization after solution treated at 950℃ for 1 h and aging treated at 600℃ for 12 h.The ultimate high temperature tensile strengths were 772,658,392 and 182 MPa,and the elongations were 9.1%,12.5%,28.6%and 35.3%at 400,500,600 and 700℃,respectively.In addition,fractured morphology analysis indicated the excellent strengthening effect of TiBw at a temperature below 600℃.However,the strengthening effect was significantly reduced due to the debonding of matrix and TiBw at 700℃ and caused the cracks to propagate along the grain boundary.

Microstructural evolution and mechanical properties of forgedβ-solidifiedγ-TiAl alloy by different heat treatments

The microstructural evolution and tensile properties of a forged Ti−42Al−5Mn alloy subjected to different heat treatments were studied.The results showed that,when the forged alloy was aged at 800℃ for 24 h,the interlamellar spacing(λ)andγgrain size at colony boundaries are generally coarsened.Whereas,when the alloy was first annealed at 1300℃ and then aged at 800℃ for 24 h,this coarsening of related microstructures appears less pronounced.The suggested annealing temperatures for the forged Ti−42Al−5Mn alloy are in the range of 1250−1300℃.It was found that,on the condition of the same annealing system,both the strength and ductility were improved as the aging temperature changed from 1000 to 800℃.The secondary precipitatedβo(β_(o,sec))at colony boundaries could be responsible for improving the strength,and theγphase at colony boundaries with the grain size about 6μm might be one of the main reasons for the better ductility.

Microstructural evolution and mechanical properties of new multi-phase NiAl-based alloy during heat treatments

Microstructural evolution and the relationship between microstructure and property during heat treatments in a new NiAl-based alloy(Ni-26.6Al-13.4Cr-8.1Co-4.3Ti-1.3W-0.9Mo,molar fraction,%))were investigated.The as-cast alloy is composed of NiAl matrix and Cr3Ni2 phase with poor ductility.The Cr3Ni2 phase is distributed as a network along the NiAl grain boundaries.Subsequent heat treatment(1 523 K,20 h,air cooling+1 123 K,16 h,furnace cooling)leads to the dissolution of Cr3Ni2 phase and the precipitation of lath-shaped Ni3Al phase andα-Cr particles,resulting in the improvement of compressive properties and fracture toughness at room temperature.Followed by long-term thermal exposure(1 173 K,8 500 h),it is found that the residual Cr3Ni2 phase keeps stable while theα-Cr particles coarsen and a great mass of lath-shaped Ni3Al precipitates are degenerated,which compromises most of the above improvements of mechanical properties through heat treatment.

Natural Science and the Evolution of Categorial Discourse

In the second half of the last century the problem of categories became less and less prominent in philosophical debates. This twilight of categorial discourse did not go unnoticed, and some authors offered different solutions for the revival of categorial theorizing in contemporary philosophy＇s repertoire. One of these authors is the American philosopher Stephen Pepper. The purpose of the present discussion is to offer yet another explanation for the decline of categorial theory, and to explore Pepper＇s view and its role in the transformation of categorial discourse. The main thesis which I will argue for is that traditional categories did not disappear altogether, but they have been replaced, gradually, by key empirical concepts from natural science. Even if such concepts do not satisfy the traditional requirements categories in shaping our for a categorial scheme, they are, nonetheless, fulfilling the same role as traditional worldviews.

Experience, Culture, Science, and Reasoned Knowledge Produce the Philosophy of Natural Foresight, with Professor Paul Ricoeur＇s Generous Heritage

Presentation of ＂development of methods of foresight＂ while presenting texts of examples and concrete results： （1） Christianity （appropriately） will not now disappear overnight since it has been around for more than 2017 years! Its built-up ＂Ways＂ are precedents and subsequents to Western models of existence, chosen, among multiple alternatives, by predecessors whose influence, is shared, today and tomorrow! （2） Use of sustained faith and search for peace for continuous steady and slow evolution （in spite of difficulties） toward the inevitable future--initial belief in Christianity presenting the least worst of existing conditions for human freedom and movement. （3） Let the unwilling remain in the last wagon of the moving train from where they will （without a doubt） regret not moving onwards, but yet happily benefit from progress （such are ＂trust-busters,＂ leaving the initiatives to the ＂clearsighted＂ actors of progress）. Note that Time moves on nonetheless. （4） Use of the past （genealogy, track record, and estimation of dates of future evolutions） for its recorded evolutions in time as ＂launching parameters＂ （ex. curves...） and for projected advancements in open-ended time, using of historical proofs with world-wide testimony, witness and belie! This would help not only in ＂down-to-earth＂ reasoning but also in ＂above and beyond＂ anticipation, further down Time＇s road! Use date and timing references of the past--further historical example and proofs to be extended to the society＇s extension in the Western World and as a founding basis from which extension throughout the World could be justified （ex. starting with Europe, and without unique or limiting dogmatism）. （5） Use of cordiality and diplomacy to ease difficulties of understanding, in spite of hesitation to proceed--＂humiliations＂ of conditions （if necessary）--as the leading ＂team＂ has an agreed objective, and these ＂volonteer followers,＂ so they would be, are trapped strangled by their own leashes. （6） Opening one＇s generous arms （even if politically motivated） to fraternal and willing brethren, for endulging welcoming attitudes toward the others. This would prepare the road for others in their own progress （toward their progressive） destiny. （7） Open-up multi-culturalism as opposed to the quest for mono-cultural sovereignty! Europe would then evermore be consolidated! （8） Indeed nothing looks like an individual more than another individual! Especially, in need! And it is in needs that appears the essence of humankind!