Subjects -> HISTORY (Total: 1540 journals)
    - HISTORY (859 journals)
    - History (General) (45 journals)
    - HISTORY OF AFRICA (72 journals)
    - HISTORY OF ASIA (67 journals)
    - HISTORY OF EUROPE (256 journals)
    - HISTORY OF THE AMERICAS (183 journals)
    - HISTORY OF THE NEAR EAST (48 journals)

HISTORY (859 journals)            First | 1 2 3 4 5     

Showing 801 - 452 of 452 Journals sorted alphabetically
Studies in Church History     Hybrid Journal   (Followers: 3)
Studies in Digital Heritage     Open Access   (Followers: 3)
Studies in East European Thought     Hybrid Journal   (Followers: 4)
Studies in Eighteenth Century Culture     Full-text available via subscription   (Followers: 29)
Studies in History     Hybrid Journal   (Followers: 20)
Studies in History and Philosophy of Science     Hybrid Journal   (Followers: 13)
Studies in People’s History     Hybrid Journal   (Followers: 2)
Studies in the History of Gardens & Designed Landscapes: An International Quarterly     Hybrid Journal   (Followers: 8)
Studies in Western Australian History     Full-text available via subscription   (Followers: 3)
Substantia     Open Access  
Suomen Sukututkimusseuran Vuosikirja     Open Access  
SUSURGALUR : Jurnal Kajian Sejarah & Pendidikan Sejarah (Journal of History Education & Historical Studies)     Open Access  
T'oung Pao     Hybrid Journal   (Followers: 16)
Tangence     Full-text available via subscription  
Tartu Ülikooli ajaloo küsimusi     Open Access   (Followers: 1)
Teaching History     Full-text available via subscription   (Followers: 7)
Technology and Culture     Full-text available via subscription   (Followers: 33)
Tekniikan Waiheita     Open Access  
temp - tidsskrift for historie     Full-text available via subscription   (Followers: 1)
Temporalidades     Open Access  
Territories : A Trans-Cultural Journal of Regional Studies     Open Access   (Followers: 1)
Testimonios     Open Access  
The Americas : A Quarterly Review of Latin American History     Full-text available via subscription   (Followers: 10)
The Corvette     Open Access  
The Court Historian : The International Journal of Court Studies     Full-text available via subscription   (Followers: 2)
The Eighteenth Century     Full-text available via subscription   (Followers: 37)
The European Legacy: Toward New Paradigms     Hybrid Journal   (Followers: 1)
The Hilltop Review : A Journal of Western Michigan University Graduate Student Research     Open Access   (Followers: 1)
The Historian     Hybrid Journal   (Followers: 30)
The International History Review     Hybrid Journal   (Followers: 26)
The Italianist     Hybrid Journal   (Followers: 7)
The Journal of the Historical Society     Hybrid Journal   (Followers: 11)
The Seventeenth Century     Hybrid Journal   (Followers: 19)
The Sixties: A Journal of History, Politics and Culture     Hybrid Journal   (Followers: 9)
The Workshop     Open Access  
Theatre History Studies     Full-text available via subscription   (Followers: 8)
Tiempo y Espacio     Open Access  
Tijdschrift voor Geschiedenis     Full-text available via subscription   (Followers: 6)
Tijdschrift voor Rechtsgeschiedenis / Revue d'Histoire du Droit / The Legal History Review     Hybrid Journal   (Followers: 14)
Time & Society     Hybrid Journal   (Followers: 10)
Trabajos y Comunicaciones     Open Access  
Traditio     Full-text available via subscription   (Followers: 3)
Trans-pasando Fronteras     Open Access  
Transactions of the Philological Society     Hybrid Journal  
Transactions of the Royal Historical Society     Hybrid Journal   (Followers: 17)
Transactions of the Royal Society of South Africa     Hybrid Journal  
Transfers     Full-text available via subscription  
Transition     Full-text available via subscription   (Followers: 2)
Transmodernity : Journal of Peripheral Cultural Production of the Luso-Hispanic World     Open Access   (Followers: 4)
Trocadero     Open Access  
Troianalexandrina     Full-text available via subscription  
Turcica     Full-text available via subscription   (Followers: 6)
Turkish Historical Review     Hybrid Journal   (Followers: 3)
Turkish Studies     Hybrid Journal   (Followers: 5)
Twentieth Century British History     Hybrid Journal   (Followers: 22)
U.S. Catholic Historian     Full-text available via subscription   (Followers: 2)
UCLA Historical Journal     Open Access   (Followers: 1)
Ufahamu : A Journal of African Studies     Open Access   (Followers: 1)
United Service     Full-text available via subscription   (Followers: 1)
Urban History     Hybrid Journal   (Followers: 18)
Urban History Review / Revue d'histoire urbaine     Full-text available via subscription   (Followers: 7)
Vegueta : Anuario de la Facultad de Geografía e Historia     Open Access  
Veleia     Open Access  
Viator     Full-text available via subscription   (Followers: 15)
Victorian Naturalist, The     Full-text available via subscription   (Followers: 2)
Victorian Periodicals Review     Full-text available via subscription   (Followers: 13)
Vigiliae Christianae     Hybrid Journal   (Followers: 8)
Viking and Medieval Scandinavia     Full-text available via subscription   (Followers: 15)
Visual Resources: An International Journal of Documentation     Hybrid Journal   (Followers: 3)
Vivarium     Hybrid Journal  
War & Society     Hybrid Journal   (Followers: 29)
Water History     Hybrid Journal   (Followers: 8)
Welsh History Review     Full-text available via subscription   (Followers: 8)
West 86th     Full-text available via subscription   (Followers: 5)
West Virginia History: A Journal of Regional Studies     Full-text available via subscription   (Followers: 1)
Wicazo Sa Review     Full-text available via subscription   (Followers: 1)
Winterthur Portfolio     Full-text available via subscription   (Followers: 5)
Women's History Review     Hybrid Journal   (Followers: 15)
Yesterday and Today     Open Access   (Followers: 1)
Zeitschrift für Weltgeschichte     Full-text available via subscription   (Followers: 4)
Zutot     Hybrid Journal   (Followers: 1)
ИСТРАЖИВАЊА : Journal of Historical Researches     Open Access  

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Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Online) 2532-3997
Published by Firenze University Press Homepage  [36 journals]
  • The Cultural Revolution: Ecological and Social

    • Authors: Vincenzo Balzani
      Pages: 5 - 6
      Abstract: Our world is sick because of the bad relationship between human society and the planet and even more because of the discords within human society itself. We are slipping more and more towards ecological and social unsustainability. Both scientists and philosophers say it, and Pope Francis highlights these views in the Laudato Sì: " Doomsday predictions can no longer be met with irony or disdain. [...] The pace of consumption, waste and environmental change has so stretched the planet’s capacity that our contemporary lifestyle, unsustainable as it is, can only precipitate catastrophes". Here then, as the Pope writes, " bold cultural revolution" is needed.
      PubDate: 2022-09-01
      DOI: 10.36253/Substantia-1741
      Issue No: Vol. 6, No. 2 (2022)
  • The Spinning Electron

    • Authors: John Lekner
      Pages: 7 - 13
      Abstract: The notion introduced by Ohanian that spin is a wave property is implemented, both in Dirac and in Schrödinger quantum mechanics. We find that half-integer spin is the consequence of azimuthal dependence in two of the four spinor components, relativistically and non-relativistically. In both cases the spinor components are free particle wavepackets; the total wavefunction is an eigenstate of the total angular momentum in the direction of net particle motion. In the non-relativistic case we make use of the Lévy-Leblond result that four coupled non-relativistic wave equations, equivalent to the Pauli-Schrödinger equation, represent particles of half-integer spin, with g-factor 2. An example of an exact Gaussian solution of the non-relativistic equations is illustrated.
      PubDate: 2022-09-01
      DOI: 10.36253/Substantia-1630
      Issue No: Vol. 6, No. 2 (2022)
  • Light-Modulated Rheological Properties in Green Innovative Formulations

    • Authors: Duccio Tatini, Martina Raudino, Filippo Sarri
      Pages: 15 - 26
      Abstract: The addition of azorubine to a viscoelastic aqueous dispersion of sodium oleate (NaOL, 0.43 M, 13% w/w) and KCl (up to 4% w/w) leads to a green gel-like system whose rheological behavior can be efficiently and reversibly triggered from remote by using UV light. Rheology, Differential Scanning Calorimetry (DSC) measurements and phase behavior studies indicate that the original texture of the NaOL dispersion is significantly hardened upon UV irradiation for 8 hours in the presence of azorubine, showing a seven hundred-fold increase in viscosity. The UV treatment brings about the trans to cis isomerization of azorubine, which modifies the structure of the NaOL wormlike micellar system, leading to a more entangled, close-textured network. The cooperative effect of KCl on the fluid viscosity is found to be concentration-dependent. The system slowly reverts to its original rheological behaviour after standing for about 1 day. These results are relevant for the development of stimuli-responsive innovative systems based on biocompatible, non expensive and commercially available materials that can be used in a wide range of applications, such as in drug delivery or enhanced oil recovery, where a quick change in the physico-chemical features of the system is required but difficult to be performed.
      PubDate: 2022-09-01
      DOI: 10.36253/Substantia-1736
      Issue No: Vol. 6, No. 2 (2022)
  • Indigenous Sand Drawings as Predictors of the Cell Response to
           Nanoparticle Therapy

    • Authors: Vuk Uskokovic
      Pages: 27 - 42
      Abstract: A technique for predicting the response of cells and tissues to a physicochemical stimulus without the use of expensive molecular markers and at time points before any morphological changes can be visibly spotted would be a meaningful addendum to the current set of bioimaging tools. One such method was developed here based on correlating transformed distance matrices of populations of cultured cells and digital checkerboard patterns derived from traditional central African drawings in the sand. Similarity measurements were made at an early time point in the therapy administered to bone cancer cells in the form of composite magnetic nanoparticles. At this early of a time point, the cell viability was mildly reduced, but no gross alterations to the cell morphology or density were visible yet. Similarity score evaluation demonstrated a significantly higher degree of similarity between the patterns derived from the sand drawings and the cells subjected to the treatment than between the former patterns and the untreated cell controls. The treated cells produced more ordered and symmetric patterns than the control ones after the processing of their pairwise distant matrices, explaining their better geometric correlation with the ancestral sand arabesques, which were monolinear and commonly comprised multiple mirror planes and rotational symmetry axes. This has suggested that the course of the therapy could be predicted by a relatively simple comparison between raw optical images of cells and indigenous ideographs using the metrics postulated here. The interdisciplinary method developed in this study may prove applicable for in situ monitoring of the response of cells and tissues to various therapies, allowing for the early indications of adverse effects to be noticed based on the simple optical observations of cells and acted upon before the progression toward nonviable states becomes irreversible. The method elaborated here may also provide an impetus for a broader search for solutions to problems plaguing the modern medicine outside of the scope of its mainstream analytical frameworks and in the ancestral heritage of relatively obscure ethnic traditions.
      PubDate: 2022-09-01
      DOI: 10.36253/Substantia-1586
      Issue No: Vol. 6, No. 2 (2022)
  • Chemists Without Knowing It'

    • Authors: Helge Kragh
      Pages: 43 - 54
      Abstract: This paper considers aspects of the chemistry-physics relationship from a historical perspective and with a focus on the entrance of quantum mechanics in twentieth-century chemistry. Traditionally, theoretical physics was widely regarded as epistemically superior to chemistry if also, from the chemists’ point of view, of little practical relevance. With the emergence of quantum chemistry in about 1930, the gulf widened as it seemed that the new discipline was more physics than chemistry. One way of investigating theoretically many-electron atoms was by means of the Hartree-Fock approximation method. The Møller-Plesset perturbation theory introduced in 1934 by a Danish and an American physicist was a refinement to the Hartree-Fock method. Although the Møller-Plesset theory was initially neglected – and is still neglected in the historiography of quantum chemistry – it came to play a most important role in later studies. Indeed, it is a prime example of what in sociological studies of science is known as a “sleeping beauty.” The paper discusses the historical context of the Møller-Plesset theory, concluding that, in a sense, its originators were “chemists without knowing it.”
      PubDate: 2022-09-01
      DOI: 10.36253/Substantia-1564
      Issue No: Vol. 6, No. 2 (2022)
  • Capillary Electrophoresis and its Basic Principles in Historical
           Retrospect. Part 4. Svante Arrhenius´ Electrolyte Dissociation. From 56
           Theses (1884) to Theory (1887)

    • Authors: Ernst Kenndler
      Pages: 55 - 77
      Abstract: Since the main interest of Svante Arrhenius, a student at Uppsala University, was the electrical conductivity of highly dilute electrolyte solutions, which had not yet been determined at the beginning of the 1880s, he decided to determine experimentally the molecular conductivities of aqueous solutions of about fifty electrolytes and their dependence on the dilution. In his dissertation, which he began in the winter of 1882/1883, he summarized his results and considerations in 56 "theses". He observed that strong acids had a high molecular conductivity, which increased only slightly with increasing dilution. Weak acids, in contrast, had low molecular conductivities, but these increased abruptly above a certain dilution. Arrhenius' innovative hypothesis was that electrolyte molecules are composed from two parts, "an active (electrolytic) and an inactive (non-electrolytic) part," with the proportion of the active part increasing with increasing dilution at the expense of the inactive part. Moreover, the electrically active part, which conducts electricity, was also the chemically active part. Arrhenius introduced the activity coefficient, later quoted as the degree of dissociation, which indicated the proportion of active molecules to the sum of active and inactive molecules. He tentatively related activity coefficient to molecular conductivity. He assumed that the higher the activity coefficients of different acids at the same equivalent concentrations, the stronger they are. Arrhenius tested his hypothesis taking the heat of neutralization of acids with a strong base measured by Thomsen and Berthelot. Strong acids developed the highest neutralization heats, i.e., the activation heat of water, since they consisted entirely of active H+ and OH- ions, which combined to inactive H2O. Weak acids developed correspondingly less. The established parallelism between the molecular conductivities of acids and their heats of neutralization was the first proof of Arrhenius' hypothesis. He relied on thermochemistry and completed his dissertation. He presented his dissertation in June 1883 and published it in 1884 to obtain his doctorate. At that time, Wilhelm Ostwald was investigating the affinities of acids to bases, i.e. the intensity of the effects of acids on the rates of reactions they cause. He took the rate constants as a measure of the relative strength of the acids. After receiving Arrhenius' thesis, he measured the acid´s molecular conductivities and found a remarkable proportionality to the reaction rate constants of the hydrolysis of methyl acetate and the inversion of cane sugar caused by them. This was the second proof of Arrhenius' hypothesis, based on the results of chemical kinetics. A memoir presented in 1885 by J. H. van 't Hoff on the analogy between the osmotic pressure of a highly dilute solution separated from the pure solvent by a semipermeable membrane and the pressure of an ideal gas containing the same number of particles as the solution led to probably the most convincing proof of the Arrhenius hypothesis. This analogy corresponded to Avogadro's well-known law, which is PV=RT. He found that the pressure for non-conductors such as glucose followed this law, but was higher for electrolytes. This deviation was accounted for by the van 't Hoff factor i, which indicates into how many particles the solute - at least partially - has dissociated, so that the modified law is PV=iRT. The factor i could be deduced from Raoult's freezing point depression, and could also be calculated using Arrhenius' degree of dissociation α. The degree of dissociation, in turn, was determined from the ratio of the conductivity of a dilute electrolyte solution and that under limiting conditions. The agreement found between the factors i determined by the two independent methods was the third proof of the Arrhenius hypothesis. There was a fourth proof, namely the additivity of physical properties. With these four nonelectrical and independent proofs, the 56 theses of Arrhenius' dissertation became the groundbreaking theory of dissociation of substances dissolved in water, which he published in 1887. In 1903 the Nobel Prize in Chemistry was awarded to him "in recognition of the extraordinary services he has rendered to the advancement of chemistry by his electrolytic theory of dissociation”.
      PubDate: 2022-09-01
      DOI: 10.36253/Substantia-1679
      Issue No: Vol. 6, No. 2 (2022)
  • True Story of Poly(2-Hydroxyethyl Methacrylate)-Based Contact Lenses: How
           Did It Really Happen

    • Authors: Miroslava Duskova-Smrckova, Jiří Podešva, Jiří Michálek
      Pages: 79 - 91
      Abstract: Soft hydrogel contact lenses represent the most famous and commercially successful application of poly(2‑hydroxyethyl methacrylate). The scarcely crosslinked network of this hydrophilic polymer finds its use also in many other fields, be it in (bio)medicine or technology. Moreover, the polymer itself and its crosslinked forms, discovered more or less serendipitously in the early fifties by a group of Czech chemists, is extremely interesting due to its exceptional properties: it readily swells in water, is optically clear, soft, biologically compatible, sufficiently strong, stable, gas-permeable, cheap, and easy to produce. Looking for its as-yet undiscovered qualities and possible utilization still continues. The story of the invention of hydrogel contact lenses was referred to many times in various literary sources which, however, contain numerous errors and misinterpretations. In the present article, we put these records straight and present the correct chronology of the hydrogel contact lenses development including the dramatic patent litigation. A brief overview of the chemical nature, properties, and applications of the constitutive substance of the lenses, i.e., the hydrophilic methacrylate, is also given.
      PubDate: 2022-09-01
      DOI: 10.36253/Substantia-1591
      Issue No: Vol. 6, No. 2 (2022)
  • Just a Grand Duke who Loves Chemistry. Peter Leopold of Habsburg-Lorraine
           (1747–1792) and his Chemical Cabinet at the Imperial and Royal Museum of
           Physics and Natural History

    • Authors: Giovanni Pratesi, Annarita Franza
      Pages: 93 - 106
      Abstract: This article dealt with the history of the chemical cabinet established by the Grand Duke of Tuscany, Peter Leopold of Habsburg-Lorraine (1747–1792), at the Imperial and Royal Museum of Physics and Natural History in Firenze during his regency. To achieve this goal, it investigated untapped archival sources (e.g., administrative and commercial documents, minutes, correspondences, inventories) concerning the museum management from its foundation in 1775 to the departure of the Grand Duke for Vienna to be crowned as Holy Roman Emperor Leopold II in 1790. The article analyzed the chemical cabinet’s manuscript catalog, whose entire transcription is presented in the Supplementary Information Files. The work then examined the connections between the activities performed at the chemical laboratory and Peter Leopold’s interests in experimental chemistry. Concerning this research question, the scientific relationship he held with the naturalist Giovanni Valentino Mattia Fabbroni (1752–1822) – Vice-director and then Director of the Imperial and Royal Museum of Physics and Natural History – who helped the Grand Duke navigate all aspects of his interests in chemistry and natural sciences, was also discussed.
      PubDate: 2022-09-01
      DOI: 10.36253/Substantia-1600
      Issue No: Vol. 6, No. 2 (2022)
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