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INTRODUZIONE 引言
Pub Date : 2019-11-12 DOI: 10.4081/incontri.0.563
C. E. Bottani
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引用次数: 0
MODELLO DELL'ATOMO, TEORIA QUANTISTICA E TAVOLA PERIODICA DEGLI ELEMENTI 原子模型,量子理论和元素周期表
Pub Date : 2019-10-10 DOI: 10.4081/incontri.2019.536
G. M. Prosperi
In this paper I attempt to sketch the path that brought from the Table of the Elements, essentially born in an chemical context, to its explanation in the framework of Atomic Physics.Thist involves the most advanced formalisms of Theoretical Physics, Quantum Mechanics and even Quantum Field Theory. I try to stress that the Table together with Spectroscopy has been among the main problems that have stimulated and even addressed the research in the latter frameworks.
在这篇论文中,我试图勾勒出从元素周期表(本质上是在化学背景下诞生的)到在原子物理学框架下对其进行解释的路径。这涉及到理论物理、量子力学甚至量子场论的最先进的形式。我想强调的是,表和光谱学一直是刺激甚至解决后一框架中研究的主要问题之一。
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引用次数: 0
TAVOLA PERIODICA SOTTO PRESSIONE: UNA PERIODICITA' DIVERSA ED UNA CHIMICA ESOTICA 压力下的元素周期表:不同的周期和外来化学
Pub Date : 2019-10-10 DOI: 10.4081/incontri.2019.552
C. Gatti
Our general and operative notion of chemistry, that enabling us to describe and interpret the structural, bonding and reactivity properties of the various compounds, is essentially rooted in the periodicity of properties of their constituting elements. Periodicity drove the path towards the proposition of the periodic table of elements and its rationalization thanks to the gradually acquired knowledge on the atomic electronic structure. Atomic radii periodicity mirrors the periodicity of the electronic configurations of the atoms’ outermost shell. The changes in atomic radii differentiate the chemical properties, hence the structures and properties of the elemental solids and of their compounds. Yet, under an external pressure, such a fully rationalized scenario may drastically change. When an atom is compressed, its average electron density increases and its outermost electronic shell is the easiest one to compress. At 100 Giga Pascal (GPa), that is at 106 atmospheres, the change of the atomic radius along a period of the Periodic Table becomes much less evident and at 1000 GPa our classical notion of periodicity is completely lost. Under pressure, the energy due to the compression work made on a system adds up to its internal energy. With such an energy gain the system may reach regions of the potential energy surface which would not be otherwise accessible. The chemical bond nature may change, even radically, and new structures and bonding patterns, characterized by totally unexpected properties, become energetically stable and possible. For instance, sodium, which is a silvery-white, highly reactive metal, becomes a fully transparent insulator, while boron is turned into a partially ionic solid elemental phase because charge transfer takes place between differently clustered groups of boron atoms. The incredible chemical inertness of helium finally falls as it forms a stable compound with sodium, Na2He. Under a suitable pressure, compounds with unusual stoichiometry (Na3Cl2, Na2Cl, Na3Cl, NaCl3, NaCl7) may be observed, despite their formula would be immediately rejected if proposed by a student at any high-school or university exam, or new carbon allotropes may appear or the aromatic character of benzene may vanish. This new chemistry is usually predicted through ab-initio quantum mechanical methods and interpreted and rationalized with the most modern chemical bonding approaches. However, compounds anticipated in silico have then be reproduced experimentally in many cases, by using diamond anvil cells to synthesize them and a variety of in situ instrumental techniques to characterize them properly.
我们对化学的一般和可操作的概念,使我们能够描述和解释各种化合物的结构、键和反应性,本质上植根于它们构成元素性质的周期性。由于人们对原子电子结构的逐渐了解,周期性推动了元素周期表的提出和合理化。原子半径的周期性反映了原子最外层电子排布的周期性。原子半径的变化区分了化学性质,从而区分了元素固体及其化合物的结构和性质。然而,在外部压力下,这种完全合理的设想可能会发生巨大变化。当一个原子被压缩时,它的平均电子密度会增加,而它最外层的电子层是最容易被压缩的。在100千兆帕斯卡(GPa),也就是106个大气压下,原子半径沿周期表周期的变化变得不那么明显,在1000 GPa时,我们的经典周期性概念就完全消失了。在压力下,系统所做的压缩功所产生的能量加起来就是它的内能。有了这样的能量增益,系统可以到达势能面,否则将无法到达的区域。化学键的性质可能会发生变化,甚至是根本性的变化,以完全意想不到的性质为特征的新结构和键合模式,在能量上变得稳定,成为可能。例如,钠是一种银白色的高活性金属,它变成了完全透明的绝缘体,而硼则变成了部分离子固体元素相,因为电荷转移发生在不同簇状的硼原子群之间。当氦与钠形成稳定的化合物Na2He时,它令人难以置信的化学惰性最终下降。在适当的压力下,可以观察到具有不同寻常化学计量的化合物(Na3Cl2, Na2Cl, Na3Cl, NaCl3, NaCl7),尽管这些化合物的分子式如果在任何高中或大学考试中被学生提出会立即被拒绝,或者可能出现新的碳同素异形体,或者苯的芳香特性可能消失。这种新化学通常是通过从头算量子力学方法来预测的,并用最现代的化学键方法来解释和合理化。然而,在许多情况下,在硅中预期的化合物已经通过实验再现,通过使用金刚石砧细胞来合成它们,并使用各种原位仪器技术来适当地表征它们。
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引用次数: 0
ORDINE DELLA NATURA E FIGURE DELLA VERITÀ 自然秩序和真理的化身
Pub Date : 2019-10-10 DOI: 10.4081/incontri.2019.538
C. Sini
The human knowledge and the order of nature: the problem of their relationship is the core of paper. The solution concerns the co-operation between the instrumental and technological knowledge and the sociale work of language.
人类的知识与自然的秩序:它们的关系问题是论文的核心。解决方案涉及工具和技术知识与语言的社会工作之间的合作。
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引用次数: 0
INTRODUZIONE 引言
Pub Date : 2019-10-10 DOI: 10.4081/incontri.2019.550
Stefano Maiorana
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不可用。
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引用次数: 0
TAVOLA PERIODICA, ELEMENTI E MINERALI: UNA STORIA AFFASCINANTE 元素周期表、元素和矿物质——一个迷人的故事
Pub Date : 2019-10-10 DOI: 10.4081/incontri.2019.535
P. Cerea
In the year 1869, 150 years ago, Dmitrij Ivanovič Mendeleev published the classification of the known chemical elements in the form of a periodic table. This scientific goal was achieved thanks to the genius both of Mendeleev, that had recognized the periodicity in the properties of the elements, and of those who had identified all the elements already known at Mendeleev’s time. This discovery process frequently occurred at the edge between chemistry and mineralogy, as a result both of the scientist’s curiosity and of the need to identify the minerals useful to the metals smelting. A brief description of the path that has lead to the discovery of all the elements of the periodic table is not possible; for that reason this work is going to deepen the analysis on the elements whose discovery has involved a mineral and was particularly peculiar. This discovery path had begun already in the ancient time. It is possible to say that the mankind started to isolate and handle the elements during the neolithic age, becoming, over time, more skillfull in recognizing new elements. The path has begun by using the metals already present in nature as native ores, as copper, silver and gold, all already known during the chalcolithic age. From this first step to the invention of the first extraction techniques and smelting, able to yield the metal starting from its minerals, it was a short step. In the ancient time at least nine elements were already known and used. We are talking about “elements”, giving to this word the meaning used in the modern chemistry. This last consideration could lead to another scenario that, however, is out of this speech: the evolution of the concept of “element”. The new elements discovery path, still before the modern definition of “element”, received a huge help by the alchemy: the isolation of four elements was achieved in that period. During the XVIII century the discovery of new elements has seen an acceleration, thanks to the historical context of the Age of Enlightenment. In that period two very similar stories involved the discovery of cobalt and nickel. Both these elements are named from creatures belonging to the miners’ mithology: the miners used to find frequently minerals that, based on their experience, should have contained metals. Those minerals, however, did not yield any known metal and, for this, the miners blamed fantasy creatures: the Kobolds, sprites stemming from Germanic mythology, and Nickel, a mischievous sprite also belonging to German miners mythology. These puzzles were solved by two scientist: George Brandt, that discovered the cobalt, and Axel Frederik Cronstedt, that discovered the nickel. A very peculiar case is represented by fluorine: between the demonstration, occurred in the 1771, that the fluorite contains a new element, and the isolation of elemental fluorine, successfully performed only in the 1886, more than one hundred years have passed. Sometimes the identification of new elements was the p
在150年前的1869年,门捷列夫以元素周期表的形式公布了已知化学元素的分类。这一科学目标的实现,既要感谢门捷列夫的天才,他认识到了元素性质的周期性,也要感谢那些在门捷列夫时代就已经知道的所有元素的人。这一发现过程经常发生在化学和矿物学之间的边缘,这既是科学家的好奇心的结果,也是鉴定对金属冶炼有用的矿物的需要的结果。对元素周期表中所有元素的发现过程进行简短的描述是不可能的;因此,这项工作将深化对这些元素的分析,这些元素的发现涉及一种矿物,而且特别特殊。这条发现之路在古代就已经开始了。可以说,人类在新石器时代开始分离和处理元素,随着时间的推移,在识别新元素方面变得更加熟练。这条道路的开始是利用自然界中已经存在的天然矿石,如铜、银和金,这些金属在铜器时代就已经为人所知。从这第一步到发明第一种提取技术和冶炼,能够从矿物中提取金属,这是很短的一步。在古代,至少有九种元素是已知和使用的。我们讨论的是“元素”,赋予这个词在现代化学中的含义。最后的考虑可能会导致另一种情况,然而,超出了这个演讲:“元素”概念的演变。在“元素”的现代定义出现之前,新元素的发现之路得到了炼金术的巨大帮助:在那个时期实现了四种元素的分离。在18世纪,由于启蒙时代的历史背景,新元素的发现加速了。在那个时期,有两个非常相似的故事涉及到钴和镍的发现。这两种元素都是以属于矿工神话的生物命名的:矿工过去经常发现矿物,根据他们的经验,这些矿物应该含有金属。然而,这些矿物并没有产生任何已知的金属,为此,矿工们归咎于幻想中的生物:狗头人,源于日耳曼神话的精灵,以及镍,一种恶作剧的精灵,也属于德国矿工神话。这些难题被两位科学家解决了:发现钴的乔治·勃兰特和发现镍的阿克塞尔·弗雷德里克·克朗斯泰特。氟是一个非常特殊的例子:从1771年证明萤石中含有一种新元素,到1886年才成功地分离出氟元素,已经过去了一百多年。有时新元素的发现是幸运的巧合。稀土元素发现时代的开端就是其中一例;它是由两个主要因素决定的:在瑞典出现了一些重要的化学家,当时在伊特比村附近的一个采石场发现了一种奇怪的矿物,叫做钆石。有时,新元素的识别是通过对不一致的数据和测量方法进行非常聪明的推理而确定的。仅考虑到沥青铀矿(或铀矿)在铀中的含量,它的放射性就太高了,这一事实导致玛丽·斯克洛多夫斯卡·居里发现了钋。在上个世纪,新元素的发现从化学和矿物学的边缘转移到了化学和物理学的边缘。
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引用次数: 0
HOMO FABER: COME I METALLI HANNO SEGNATO E SEGNANO ANCHE OGGI LA CIVILTÀ DELL’UOMO 费伯人:金属是如何塑造和塑造人类文明的
Pub Date : 2019-10-10 DOI: 10.4081/incontri.2019.537
R. Psaro
The succession of various ages, from those of copper to that of bronze, then iron and so on, is dictated by the chemical properties of the various metals and, ultimately, by the periodic table of the elements. The capacity expressed by the homo faber to extract and work the different metals, have marked technological developments so radical as to be chosen by historians to designate real civilizations. Gold was the first metal used by man, although it could not be used either as a tool or as a weapon. More than any other ancient element, gold has always been associated with a timeless charm. None of the chemical elements discovered by modern science has been able to overcome its supremacy. Since the time of its discovery, gold has been used for ornamental purposes and only with technological development has it been used also for technical and scientific purposes. For titanium, however, the reverse path was verified, from its essentially technological use it then moved on to the artistic one. Starting in the 1960s, when titanium became available even for non-military uses, its applications have done nothing but grow and diversify. His artistic fame is unquestionably linked to the Guggenheim Museum in Bilbao designed by the architect Frank Gehry in 1997, while in Pedeferri’s titanochromies we have the combination of art and technology.
从铜的年代到青铜的年代,再到铁的年代等等,不同年代的顺序是由各种金属的化学性质决定的,最终是由元素周期表决定的。智人所表现出的提取和加工各种金属的能力,标志着技术的发展如此激进,以至于被历史学家选定为真正的文明。黄金是人类最早使用的金属,尽管它既不能被用作工具,也不能被用作武器。与其他任何古老元素相比,黄金总是与永恒的魅力联系在一起。现代科学所发现的化学元素,没有一种能战胜它的至高无上的地位。自从黄金被发现以来,它一直被用于装饰目的,只有随着科技的发展,它才被用于技术和科学目的。然而,对于钛来说,相反的路径被证实了,它从本质上的技术用途转向了艺术用途。从20世纪60年代开始,钛甚至可以用于非军事用途,它的应用除了增长和多样化之外什么也没有做。他的艺术名声无疑与建筑师弗兰克·盖里(Frank Gehry)于1997年在毕尔巴鄂设计的古根海姆博物馆(Guggenheim Museum)有关,而在pederferri的titanochromies中,我们看到了艺术与技术的结合。
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引用次数: 0
L’ITALIANO DEI FRANCESI NEI PRIMI ANNI DELL’OTTOCENTO 19世纪早期的意大利法语
Pub Date : 2019-05-17 DOI: 10.4081/INCONTRI.2019.494
L. Colombo
During the 19th Century, many French literary works exhibit the fascination and appeal of Italy and contain numerous insertions written in Italian. On the other hand, during their stay in Italy, French writers and intellectuals often contributed to local periodicals or were welcomed into Italian Academies. Among these authors, Giovanni Salvatore De Coureil and Aimé Guillon, who are the object of this study, are famous mainly for their controversies with Monti and Foscolo. However, they also published interesting works the different linguistic and aesthetical, (both Italian and French), codes, examined with reference to the various political events relating to both Countries, from the First French Empire to Bourbon Restauration. A brief analysis of these writings illustrates their thematic variety that deals with literary and dramatic criticism as well as translation issues, in which heteroglossia phenomena intertwine with interculturalism.
在19世纪,许多法国文学作品展示了意大利的魅力和吸引力,并包含了许多用意大利语写的插入。另一方面,在意大利逗留期间,法国作家和知识分子经常为当地期刊撰稿,或被意大利学院欢迎。在这些作者中,本研究的对象Giovanni Salvatore De Coureil和aim Guillon主要因与Monti和Foscolo的争议而闻名。然而,他们也出版了有趣的作品,不同的语言和美学(意大利语和法语)代码,参考与两国有关的各种政治事件,从法兰西第一帝国到波旁王朝。对这些作品的简要分析表明,它们的主题多样性涉及文学和戏剧批评以及翻译问题,其中异语现象与跨文化主义交织在一起。
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引用次数: 0
FRANCISCO JAVIER CLAVIJERO (1731-1787) AUTOTRADUTTORE ALL’ITALIANO
Pub Date : 2019-05-17 DOI: 10.4081/INCONTRI.2019.495
Giovanni Gentile G. Marchetti
Arriving in Italy following the expulsion of the Jesuits from all the territories of the Spanish crown, the Mexican Francisco Javier Clavijero did not delay much to conceive the work that earned him the fame of initiator of the modern Latin American historiography. Eager to correct the erroneous and, in many ways, teratological image that the philosophes had offered of America, he composed, in the Spanish language, his, still fundamental today, Historia antigua de México, which, however, for various reasons, had to remain manuscript for a long time. Instead, he published it in Italian (Storia antica del Messico, 4 vols., Cesena, Biasini, 1780-81), two years after finishing it, in March 1778. The considerable extension of the work certainly makes Clavijero credible when he claims to have imposed himself a “new and difficult task by translating [his books] into the Tuscan”. The solutions that he adopts for some translation problems in the field of the subject dealt with are preferibiles to those of most contemporary translators of similar works.
墨西哥人弗朗西斯科·哈维尔·克拉维耶罗(Francisco Javier Clavijero)是在耶稣会士被驱逐出西班牙王室的所有领土之后抵达意大利的,他没有耽搁太多时间就构思出了这部为他赢得了现代拉丁美洲史学创始人美誉的作品。他急于纠正哲学家们对美国错误的、从很多方面来说都是畸形的印象,于是用西班牙语撰写了他的《墨西哥安提瓜史》(Historia antigua de mxico),这本书在今天仍然具有重要意义。然而,由于种种原因,这本书不得不在很长一段时间内保留为手稿。相反,他用意大利语出版了《墨西哥史》,共4卷。(切塞纳,比亚西尼,1780-81),完成后两年,于1778年3月。当克拉维杰罗声称自己“将自己的书翻译成托斯卡纳语”时,这部作品的相当大的延伸无疑使他的可信度更高。他对所涉题材领域的一些翻译问题所采取的解决办法,优于同时代大多数同类作品的译者。
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引用次数: 0
L’ITALIANO IN EUROPA E L’ETEROGLOSSIA LETTERARIA: UNO SGUARDO SULLE TRADUZIONI (E LE AUTOTRADUZIONI) POETICHE 欧洲的意大利语和文学异构:诗歌翻译(和自翻译)的一瞥
Pub Date : 2019-05-03 DOI: 10.4081/INCONTRI.2019.472
F. Brugnolo
One aspect of the literary heteroglossia in Italian language, which was dealt with only cursorily in my book “La lingua di cui si vanta Amore. Scrittori stranieri in lingua italiana dal Medioevo al Novecento” (2009), is that of the poetic translation and especially of self-translation. While the former is evidenced almost only in the XVII and XVIII centuries (Bachet and Régnier-Desmarais have translated in Italian classical poets, Jagemann and Mathias modern texts), the latter reveal significant examples during the XIX century: Shelley, Platen, Dante Gabriel and Christina Rossetti, etc. All these authors are featured in the present article.
意大利语文学异语的一个方面,在我的书《爱的语言》中只是粗略地讨论了一下。《意大利语与新语言》(2009)是诗歌翻译,尤其是自译的翻译。前者几乎只在17世纪和18世纪得到证实(巴切特和雷姆格尼耶-德马莱翻译了意大利古典诗人、贾格曼和马蒂亚斯的现代文本),后者则揭示了19世纪的重要例子:雪莱、普拉滕、但丁、加布里埃尔和克里斯蒂娜·罗塞蒂等。这篇文章对所有这些作者都作了介绍。
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引用次数: 0
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Istituto Lombardo - Accademia di Scienze e Lettere - Incontri di Studio
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