330 research outputs found

    Investing in Italy: Key legal issues for investors in the Gulf

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    Recent market data and press reports seem to confirm a growing interest, including from the Gulf, for investments in private and listed companies in Italy. In taking advantage of the opportunities presented by the Italian market (including the disposal plans announced and in part already enacted by the Italian government), investors should be aware of some key legal issues and practical factors. This article briefly outlines some of these key legal issues and factors as they may apply to investors from the Gulf region. It first addresses some of the disclosure and mandatory tender offer obligations that may be triggered in connection with investments in companies listed in Italy. It then provides some legal and practical insights regarding shareholders’ agreements, including certain related merger control considerations. It also provides a general overview of the new foreign investment control regime applicable to investments in the sectors of defense and national security, and in certain assets in the sectors of energy, transport and communications. Finally, it makes brief reference to the potential regulatory-specific approvals that may be required for investments in certain sectors and industries or in respect of certain assets. This article condenses the presentations and discussions that took place at the seminars hosted on this topic by Cleary Gottlieb in Abu Dhabi and Dubai in May 2014

    Separation of Time Scales in a Quantum Newton’s Cradle

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    We provide detailed modeling of the Bragg pulse used in quantum Newton’s-cradle-like settings or in Bragg spectroscopy experiments for strongly repulsive bosons in one dimension. We reconstruct the postpulse time evolution and study the time-dependent local density profile and momentum distribution by a combination of exact techniques. We further provide a variety of results for finite interaction strengths using a time-dependent Hartree-Fock analysis and bosonization-refermionization techniques. Our results display a clear separation of time scales between rapid and trap-insensitive relaxation immediately after the pulse, followed by slow in-trap periodic behavior

    Controlling electronic events through rational structural design in subphthalocyanine–corrole dyads: synthesis, characterization, and photophysical properties

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    Porphyrinoids are considered perfect candidates for their incorporation into electron donor–acceptor (D–A) arrays due to their remarkable optoelectronic properties and low reorganization energies. For the first time, a series of subphthalocyanine (SubPc) and corrole (Cor) were covalently connected through a short-range linkage. SubPc axial substitution strategies were employed, which allowed the synthesis of the target molecules in decent yields. In this context, a qualitative synthetic approach was performed to reverse the expected direction of the different electronic events. Consequently, in-depth absorption, fluorescence, and electrochemical assays enabled the study of electronic and photophysical properties. Charge separation was observed in cases of electron-donating Cors, whereas a quantitative energy transfer from the Cor to the SubPc was detected in the case of electron accepting Cors

    A leopard cannot change its spots: Unexpected products from the vilsmeier reaction on 5,10,15-tritolylcorrole

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    The reaction of 5,10,15-tritolylcorrole with 3-dimethylaminoacrolein (3-DMA) and POCl3 gives a further example of the rebel reactivity of this contracted macrocycle. While no evidence was obtained for the formation of the expected -acrolein corrole, the inner core substituted N21,N22-3-formylpropylcorrole and the 10-acrolein isocorrole were the reaction products. By increasing the temperature or the amount of the Vilsmeier reagent, the 10-isocorrole became the unique reaction product. The formation of the isocorrole by electrophilic attack of the Vilsmeier reagent to the 10-position of the corrole is unprecedented in the porphyrinoids field and it could pave the way for a novel route to the preparation of stable isocorrole

    Investigation of VOCs associated with different characteristics of breast cancer cells

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    The efficacy of breath volatile organic compounds (VOCs) analysis for the screening of patients bearing breast cancer lesions has been demonstrated by using gas chromatography and artificial olfactory systems. On the other hand, in-vitro studies suggest that VOCs detection could also give important indications regarding molecular and tumorigenic characteristics of tumor cells. Aim of this study was to analyze VOCs in the headspace of breast cancer cell lines in order to ascertain the potentiality of VOCs signatures in giving information about these cells and set-up a new sensor system able to detect breast tumor-associated VOCs. We identified by Gas Chromatography-Mass Spectrometry analysis a VOCs signature that discriminates breast cancer cells for: i) transformed condition; ii) cell doubling time (CDT); iii) Estrogen and Progesterone Receptors (ER, PgR) expression, and HER2 overexpression. Moreover, the signals obtained from a temperature modulated metal oxide semiconductor gas sensor can be classified in order to recognize VOCs signatures associated with breast cancer cells, CDT and ER expression. Our results demonstrate that VOCs analysis could give clinically relevant information about proliferative and molecular features of breast cancer cells and pose the basis for the optimization of a low-cost diagnostic device to be used for tumors characterization

    Panchromatic light harvesting and stabilizing charge-separated states in corrole–phthalocyanine conjugates through coordinating a subphthalocyanine

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    Owing to the electron-donating and -accepting nature of corroles (Corr) and phthalocyanines (Pc), respectively, we designed and developed two novel covalently linked Corr-Pc conjugates. The synthetic route allows the preparation of the target conjugates in satisfying yields. Comprehensive steady-state absorption, fluorescence, and electrochemical assays enabled insights into energy and electron-transfer processes upon photoexcitation. Coordinating a pyridine-appended subphthalocyanine (SubPc) to the Pc of the conjugate sets up the ways and means to realize the first example of an array composed by three different porphyrinoids, which drives a cascade of energy and charge-transfer processes. Importantly, the SubPc assists in stabilizing the charge-separated state, that is, one-electron oxidized Corr and the one electron-reduced Pc, upon photoexcitation by means of a reductive charge transfer to the SubPc. To the best of our knowledge, this is the first case of an intramolecular oxidation of a Corr within electron-donor–acceptor conjugates by means of just photoexcitation. Moreover, the combination of Corr, Pc, and SubPc guarantees panchromatic absorption across the visible range of the solar spectrum, with the SubPc covering the „green gap“ that usually affects porphyrinoids

    Exigências nutricionais de mudas de bananeira tipo prata submetidas à deficiência de nutrientes.

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    O objetivo deste trabalho foi avaliar a produção de matéria seca de mudas de banana tipo prata submetidas a omissão de macronutrientes em solução nutritiva. Um experimento foi conduzido em casa de vegetação no Campus JK da UFVJM, no delineamento experimental inteiramente casualizado, com três repetições com uma planta por vaso em solução nutritiva. Os tratamentos foram: Completo (macro e micronutrientes) e a omissão de um nutriente por vez (-N, -P, -K, -Ca, -Mg , -S, -B, -Cu, -Fe, -Mn e -Zn) em solução nutritiva e dois genótipos (Prata-Ana e seu híbrido PA42-44). A adubação no tratamento completo consistiu de: 210,1 mg de N, 31 mg de P, 234,6 mg de K, 200,4 mg de Ca, 48,6 mg de Mg, 64,2 mg de S, 500 ?g de B, 20 ?g de Cu, 648 ?g de Cl, 5.022 ?g de Fe, 502 ?g de Mn, 11 ?g de Mo e 50 ?g de Zn por litro. O período experimental foi de 100 dias e foram avaliadas as seguintes características: área foliar, peso de massa seca da parte aérea e de raízes. O genótipo Prata-Anã é mais exigente em N e Ca e é menos exigente em K e Mg e micronutrientes do que o genótipo PA42-44, tendo a mesma exigência em P, S e B

    Surgical resection is superior to TACE in the treatment of HCC in a well selected cohort of BCLC-B elderly patients—A retrospective observational study

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    Simple Summary Hepatocellular carcinoma (HCC) is the most common primary liver malignancy. Liver transplantation (LT) and surgical resection (SR) are currently the primary treatments with curative intent. Nevertheless, more than two-thirds of patients are elderly and, therefore, excluded from LT; while, according to the Barcelona Clinic Liver Cancer (BCLC) system, SR should only be offered to a small group of patients with early stage HCC. The identification in stage B of an intermediate subgroup of patients that fulfill the criteria for surgery may play an important role in the implementation of potentially curative treatments. Hepatocellular carcinoma (HCC) usually develops in cirrhotic liver, with high recurrence rates. However, considering its increasing detection in non-cirrhotic liver, the choice of treatment assumes particular relevance. This study aimed to investigate outcomes of patients among BCLC stages and enrolled for surgical resection (SR) according to a more complex evaluation, to establish its safety and efficacy. A total of 186 selected HCC patients (median age 73.2 yrs), submitted to SR between January 2005 and January 2021, were retrospectively analyzed. Of which, 166 were staged 0, A, B according to the BCLC system, while 20 with a single large tumor (>5 cm) were classified as stage AB. No perioperative mortality was recorded; complications occurred in 48 (25.80%) patients, and all but two were Clavien-Dindo grade I-II. Median follow-up was 9.2 years. Subsequently, 162 recurrent patients (87,1%) were selected for new treatments. Comparable overall survival rates (OS) were observed at 1, 3, 5, and 10 years in 0, A, B and AB stages (p = 0.2). Eventually, the BCLC-B group was matched to 40 BCLC-B patients treated (2015-2021) with TACE. Significant differences in baseline characteristics (p <0.0001) and in OS were observed at 1 and 3 years (p <0.0001); a significant difference was also observed in oncological outcomes, in terms of the absence, residual, or relapse of disease (p <0.05). Surgery might be a valid treatment in HCC for patients affected by chronic liver disease in a condition of compensation, up to BCLC-B stage. Surgical indication for liver resection in case of HCC should be extensively revised

    Macromolecular and electrical coupling between inner hair cells in the rodent cochlea

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    Inner hair cells (IHCs) are the primary receptors for hearing. They are housed in the cochlea and convey sound information to the brain via synapses with the auditory nerve. IHCs have been thought to be electrically and metabolically independent from each other. We report that, upon developmental maturation, in mice 30% of the IHCs are electrochemically coupled in ‘mini-syncytia’. This coupling permits transfer of fluorescently-labeled metabolites and macromolecular tracers. The membrane capacitance, Ca2+-current, and resting current increase with the number of dye-coupled IHCs. Dual voltage-clamp experiments substantiate low resistance electrical coupling. Pharmacology and tracer permeability rule out coupling by gap junctions and purinoceptors. 3D electron microscopy indicates instead that IHCs are coupled by membrane fusion sites. Consequently, depolarization of one IHC triggers presynaptic Ca2+-influx at active zones in the entire mini-syncytium. Based on our findings and modeling, we propose that IHC-mini-syncytia enhance sensitivity and reliability of cochlear sound encoding
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