80 research outputs found

    Political Rhetoric in China and in Imperial Rome: the Persuader, the Ruler, the Audience

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    The most fundamental difference between political rhetoric in traditional China and in the Greco-Roman worldβ€”and specifically in Rome, with which I will deal hereβ€”is, as is rightly stressed by some of the contributors to this splendid volume, that in China political rhetoric is invariably addressed by a β€œpersuader” to a single manβ€”the autocratic ruler, and not to the public or to collective civic bodies. In Romain Graziani’s words, β€œThis canonical political pattern must be understood within t..

    Electronic Properties of Functionalized Diamanes for Field-Emission Displays

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    Ultrathin diamond films, or diamanes, are promising quasi-2D materials that are characterized by high stiffness, extreme wear resistance, high thermal conductivity, and chemical stability. Surface functionalization of multilayer graphene with different stackings of layers could be an interesting opportunity to induce proper electronic properties into diamanes. Combination of these electronic properties together with extraordinary mechanical ones will lead to their applications as field-emission displays substituting original devices with light-emitting diodes or organic light-emitting diodes. In the present study, we focus on the electronic properties of fluorinated and hydrogenated diamanes with (111), (110), (0001), (101Μ…0), and (2Μ…110) crystallographic orientations of surfaces of various thicknesses by using first-principles calculations and Bader analysis of electron density. We see that fluorine induces an occupied surface electronic state, while hydrogen modifies the occupied bulk state and also induces unoccupied surface states. Furthermore, a lower number of layers is necessary for hydrogenated diamanes to achieve the convergence of the work function in comparison with fluorinated diamanes, with the exception of fluorinated (110) and (2Μ…110) films that achieve rapid convergence and have the same behavior as other hydrogenated surfaces. This induces a modification of the work function with an increase of the number of layers that makes hydrogenated (2Μ…110) diamanes the most suitable surface for field-emission displays, better than the fluorinated counterparts. In addition, a quasi-quantitative descriptor of surface dipole moment based on the Tantardiniβˆ’Oganov electronegativity scale is introduced as the average of bond dipole moments between the surface atoms. This new fundamental descriptor is capable of predicting a priori the bond dipole moment and may be considered as a new useful feature for crystal structure prediction based on artificial intelligence

    Optoelectronic properties of a photosystem I - carbon nanotube hybrid system

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    The photoconductance properties of photosystem I (PSI) covalently bound to carbon nanotubes (CNTs) are measured. We demonstrate that the PSI forms active electronic junctions with the CNTs enabling control of the CNTs photoconductance by the PSI. In order to electrically contact the photoactive proteins, a cysteine mutant is generated at one end of the PSI by genetic engineering. The CNTs are covalently bound to this reactive group using carbodiimide chemistry. We detect an enhanced photoconductance signal of the hybrid material at photon wavelengths resonant to the absorption maxima of the PSI compared to nonresonant wavelengths. The measurements prove that it is feasible to integrate photosynthetic proteins into optoelectronic circuits at the nanoscale

    The influence of size effect on the electronic and elastic properties of diamond films with nanometer thickness

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    The atomic structure and physical properties of few-layered oriented diamond nanocrystals (diamanes), covered by hydrogen atoms from both sides are studied using electronic band structure calculations. It was shown that energy stability linear increases upon increasing of the thickness of proposed structures. All 2D carbon films display direct dielectric band gaps with nonlinear quantum confinement response upon the thickness. Elastic properties of diamanes reveal complex dependence upon increasing of the number of layers. All theoretical results were compared with available experimental data.Comment: 16 pages, 5 figures, 3 table

    Selinexor in Advanced, Metastatic Dedifferentiated Liposarcoma: A Multinational, Randomized, Double-Blind, Placebo-Controlled Trial

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    PURPOSE Antitumor activity in preclinical models and a phase I study of patients with dedifferentiated liposarcoma (DD-LPS) was observed with selinexor. We evaluated the clinical benefit of selinexor in patients with previously treated DD-LPS whose sarcoma progressed on approved agents. METHODS SEAL was a phase II-III, multicenter, randomized, double-blind, placebo-controlled study. Patients age 12 years or older with advanced DD-LPS who had received two-five lines of therapy were randomly assigned (2:1) to selinexor (60 mg) or placebo twice weekly in 6-week cycles (crossover permitted). The primary end point was progression-free survival (PFS). Patients who received at least one dose of study treatment were included for safety analysis (ClinicalTrials.gov identifier: ). RESULTS Two hundred eighty-five patients were enrolled (selinexor, n = 188; placebo, n = 97). PFS was significantly longer with selinexor versus placebo: hazard ratio (HR) 0.70 (95% CI, 0.52 to 0.95; one-sided P = .011; medians 2.8 v 2.1 months), as was time to next treatment: HR 0.50 (95% CI, 0.37 to 0.66; one-sided P < .0001; medians 5.8 v 3.2 months). With crossover, no difference was observed in overall survival. The most common treatment-emergent adverse events of any grade versus grade 3 or 4 with selinexor were nausea (151 [80.7%] v 11 [5.9]), decreased appetite (113 [60.4%] v 14 [7.5%]), and fatigue (96 [51.3%] v 12 [6.4%]). Four (2.1%) and three (3.1%) patients died in the selinexor and placebo arms, respectively. Exploratory RNA sequencing analysis identified that the absence of CALB1 expression was associated with longer PFS with selinexor compared with placebo (median 6.9 v 2.2 months; HR, 0.19; P = .001). CONCLUSION Patients with advanced, refractory DD-LPS showed improved PFS and time to next treatment with selinexor compared with placebo. Supportive care and dose reductions mitigated side effects of selinexor. Prospective validation of CALB1 expression as a predictive biomarker for selinexor in DD-LPS is warranted. (C) 2022 by American Society of Clinical Oncolog

    The prince of Denmark facing mass immigration – from Germany.

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    How would Denmark react to a wave of mass immigration from Germany, numbering hundreds of thousands or millions of people? The question is, needles to say, purely hypothetical, but it is nevertheless, in my view, highly pertinent in the context of discussing the issues raised in Liav Orgad’s important book, The Cultural Defense of Nations. These questions are at the very heart of Europe’s present concerns and dilemmas, which makes the book’s highly original, learned and well-argued contribution to the debate all the more valuable.</p

    Π’Ρ‹Π±ΠΎΡ€Ρ‹ ΠΈ ΠΏΡ€Π΅Π΄Π²Ρ‹Π±ΠΎΡ€Π½Ρ‹Π΅ ΠΊΠ°ΠΌΠΏΠ°Π½ΠΈΠΈ Π² Π ΠΈΠΌΠ΅: исслСдованиС политичСской систСмы ΠΏΠΎΠ·Π΄Π½Π΅ΠΉ РСспублики

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    Книга прСдставляСт собой исслСдованиС римских Π²Ρ‹Π±ΠΎΡ€ΠΎΠ² ΠΈ ΠΏΡ€Π΅Π΄Π²Ρ‹Π±ΠΎΡ€Π½ΠΎΠΉ Π°Π³ΠΈΡ‚Π°Ρ†ΠΈΠΈ Π² ΠΏΠ΅Ρ€ΠΈΠΎΠ΄ ΠΏΠΎΠ·Π΄Π½Π΅ΠΉ РСспублики, посвящённоС Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹ΠΌ способам завоСвания ΡΠ»Π΅ΠΊΡ‚ΠΎΡ€Π°Π»ΡŒΠ½ΠΎΠΉ ΠΏΠΎΠ΄Π΄Π΅Ρ€ΠΆΠΊΠΈ ΠΈ обСспСчСния ΠΏΠΎΠ±Π΅Π΄Ρ‹ ΠΏΡ€ΠΈ голосовании. Π Π΅Ρ‡ΡŒ Π² Π½Π΅ΠΉ ΠΈΠ΄Ρ‘Ρ‚ Π½Π΅ Ρ‚ΠΎΠ»ΡŒΠΊΠΎ ΠΎ соискании Π² ΡƒΠ·ΠΊΠΎΠΌ смыслС этого слова, Π½ΠΎ ΠΈ ΠΎ ΠΊΠ°ΠΆΠ΄ΠΎΠΌ Π²ΠΈΠ΄Π΅ повСдСния со стороны ΠΊΠ°Π½Π΄ΠΈΠ΄Π°Ρ‚Π° β€” Π΄Π΅ΠΉΡΡ‚Π²ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠΌ ΠΈΠ»ΠΈ ΠΏΡ€Π΅Π΄ΠΏΠΎΠ»Π°Π³Π°Π΅ΠΌΠΎΠΌ β€” ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅, ΠΊΠ°ΠΊ ΠΏΡ€Π΅Π΄ΠΏΠΎΠ»Π°Π³Π°Π»ΠΎΡΡŒ, ΡƒΠ²Π΅Π»ΠΈΡ‡ΠΈΠ²Π°Π»ΠΈ Π΅Π³ΠΎ ΡˆΠ°Π½ΡΡ‹ Π½Π° ΠΏΡ€ΠΎΡ…ΠΎΠΆΠ΄Π΅Π½ΠΈΠ΅ cursus honorum. Вопрос ΠΎ римских Π²Ρ‹Π±ΠΎΡ€Π°Ρ… помСщаСтся, Ρ‚Π°ΠΊΠΈΠΌ ΠΎΠ±Ρ€Π°Π·ΠΎΠΌ, Π² Π±ΠΎΠ»Π΅Π΅ ΡˆΠΈΡ€ΠΎΠΊΠΈΠΉ политичСский ΠΈ ΡΠΎΡ†ΠΈΠ°Π»ΡŒΠ½Ρ‹ΠΉ контСкст. Одной ΠΈΠ· Ρ†Π΅Π»Π΅ΠΉ Π΄Π°Π½Π½ΠΎΠΉ Ρ€Π°Π±ΠΎΡ‚Ρ‹ являСтся ΠΏΠ΅Ρ€Π΅ΠΎΡ†Π΅Π½ΠΊΠ° Ρ‚Ρ€Π°Π΄ΠΈΡ†ΠΈΠΎΠ½Π½ΠΎΠΉ ΠΌΠΎΠ΄Π΅Π»ΠΈ римской ΠΈΠ·Π±ΠΈΡ€Π°Ρ‚Π΅Π»ΡŒΠ½ΠΎΠΉ систСмы. Автор Π΄Π΅Π»Π°Π΅Ρ‚ Π²Ρ‹Π²ΠΎΠ΄, Ρ‡Ρ‚ΠΎ Π²Π°ΠΆΠ½ΠΎΡΡ‚ΡŒ Π½Π°Ρ€ΠΎΠ΄Π½ΠΎΠ³ΠΎ элСмСнта Π² этой систСмС Π±Ρ‹Π»Π° Π·Π½Π°Ρ‡ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎ большСй, Ρ‡Π΅ΠΌ часто ΠΏΡ€Π΅Π΄ΠΏΠΎΠ»Π°Π³Π°ΡŽΡ‚.Bibliography: P. 235-246; Index: P. 247-251
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