The review of arabic proverb studies by the arabs and non-arabs

© Journal of Language and Literature. This article deals with the analyses of different approaches to the Arabic proverb studies. The Arabic proverbs reflecting the culture of the Arabs have been studied from various perspectives by Arabic and Non-Arabic scientists. Our research involves lexicographic, scientific, linguistic, translational, syntactic, sociopsychological and comparative approach reviews. The aim of this study is to clarify the existing approaches to the phenomenon analyzed and to structuralize the data in this field into thematic groups. The Arabic scientists resorted to lexicographic and scientific approaches; the Non-Arabic scientists used translational, syntactic and sociopsychological approaches to the proverb studies. This paper also highlights the syntactic approach to the proverbs with zoonym component that is under our consideration

Comparative analysis of English, Arabic and Tatar national corpora

The review deals with the analysis of English, Arabic and Tatar corpora. The corpora of English have been developed by various British, American and foreign scientists. In comparison with the Tatar corpus, the Arabic one is rather well-known and developed, while the Tatar corpus is only familiar to Tatar linguists, so little attention is paid to it. It should be noted that both the Arabs and Non-Arabs are interested in the Arabic corpus, and the Tatar corpus is investigated by Tatar scholars. The research involves review of these three corpora of languages belonging to different language families as well as corpus linguistics approach to proverbs study. The aim of this investigation is to structuralize the data in this field, discuss the problems preventing their development and to show the implementation of corpus linguistic methods to proverbs

β-Keto phosphonic esters Communication 12. Structures of the products of the reaction of some α-halo ketones of the aromatic series with triethyl phosphite and with sodium diethyl phosphite

1. According to chemical and spectroscopic data the product of the reaction of 2-bromoacetophenone with sodium diethyl phosphite is a difficultly separable mixture of esters of similar structure, namely diethyl 1-phenylvinyl phosphate and diethyl 1,2-epoxy-1-phenylethylphosphonate. 2. The product of the action of 2-bromopropiophenone on sodium diethyl phosphite is diethyl 1,2-epoxylphenylpropylphosphonate. 3. The reaction of 2-bromopropiophenone with triethyl phosphite gave diethyl 1-methylphenacylphosphonate and diethyl 1-phenylpropenyl phosphate. 4. The reactions of 2-bromo-2-methylpropiophenone, in which the bromine is on a tertiary carbon atom, with triethyl phosphite and with sodium diethyl phosphite take the same direction with formation of diethyl 2-methyl-1-propenyl phosphate. © 1964 Consultants Bureau

The main participants of innovation climate development (on the example of the Russian federation)

The article describes the main participants of innovation activity and innovation infrastructure, which includes such important categories as subject and object of innovation activity and the most important elements of innovation infrastructure. We attempted to display illustratively the basic economic relations that can be between the subjects of innovation activity, at the same time as the main participants are considered government, business and households. As binders subjects are allocated venture funds, technology parks, and business incubators. The state of innovation climate in the Russian regions can not be considered as favorable, because the order of interaction between government, universities (science), and business prevents it

β-Keto phosphonic esters - Communication 11. Action of diazomethane on diethyl acetyl- and benzoylphosphonates

1. By the reaction of diazomethane with diethyl acetylphosphonate diethyl 1,2-epoxy-1-methylethylphosphonate and a little diethyl acetonylphosphonate were obtained. 2. Diethyl 1,2-epoxy-1-methylethylphosphonate was obtained also by the oxidation of diethyl isopropenyl-phosphonate with peroxyacetic acid. 3. By the reaction of diazomethane with diethyl benzoylphosphonate diethyl phenacylphosphonate was obtained. 4. The addition of phosphorus pentachloride to α-ethoxystyrene gave β-ethoxystyrylphosphonic dichloride, which was converted into diethyl β-ethoxystyrylphosphonate. Hydrolysis of the latter gave diethyl phenacylphosphonate. © 1964 Consultants Bureau Enterprises, Inc

Nanoparticles based on gadolinium(iii) and europium(iii) complexes for biovisualization

© 2016, Springer Science+Business Media New York.Complexes Ln(TTA)3 and [Ln(TTA)3·1] (Ln = Eu, Gd; ТТА is thenoyltrifluoroacetyl-acetonate; 1 is 2-(5-chlorophenylene-2-hydroxy)-2-phenylethylene-bis(2-methoxy)phosphine oxide) in individual form, and as a part of a core of the polyelectrolyte stabilized colloids have been studied by Mössbauer spectroscopy and X-ray powder diffraction. The photophysical and colloidal characteristics of the solutions of polyelectrolyte nanoparticles were studied in water, artificial cerebrospinal fluid solution, solution of bovine serum albumin, and human blood serum. A stability of a luminescent response of the nanoparticles in solutions of bovine serum albumin and human blood serum at 37 °С for 2 hours has been revealed. This is a prerequisite for the potential application of studied nanoparticles for biovisualization

Interfacial interactions of hard polyelectrolyte-stabilized luminescent colloids with substrates

© 2015 Elsevier B.V.. The present work introduces an origin of sensing function of polyelectrolyte-coated colloids based on Tb(III) complexes with calix[4]resorcinarene cavitand bearing four 1,3-diketone groups at the upper rim. The Tb(III)-centered luminescence of the colloids remains unchanged at pH 3-9, although the Tb(III) complexes are highly pH-dependent in DMF solutions. Both colloidal and luminescent properties of the colloids are stable within one month at least, which reveals stability of complex-based hard nanotemplates and soft polyelectrolyte deposition. The chelating substrates (catechol, tetracycline and fluoroquinolone derivatives) induce quick and reproducible luminescent response of the complex-based colloids without any detectable changes of their colloidal properties. The ternary complex formation at the interface of the colloids is the reason for their luminescent response on the substrates in aqueous solutions. Both the insolubility of the Tb(III)-containing cores and the shielding and/or buffer effect of the polyelectrolyte coating affect the interfacial complex formation, which results in more selective luminescent response of the colloids on the tetracycline and fluoroquinolone antibiotics in comparison with the complexes in solutions

COVID-19-ассоциированный ангиит: обзор литературы и описание клинического случая

The article systematizes information about various dermatological signs of a novel coronavirus infection – COVID-19. Special attention is paid to the phenomenon of COVID-19-associated angiitis. A clinical case of acroischemia associated with COVID-19 is described: on the 34th day after the onset of infection, a patient developed skin cyanosis of the distal parts of the fingers, which resolved spontaneously after a few days. The need for further research on the skin manifestations of COVID-19 and the development of an effective strategy for managing patients, as well as monitoring the condition of convalescents, is emphasized.В статье систематизированы сведения о различных дерматологических признаках новой коронавирусной инфекции – COVID-19. Особое внимание уделено феномену COVID-19-ассоциированного ангиита. Описан клинический случай акроишемии, связанной с COVID-19: у пациента на 34-й день после дебюта инфекции развился цианоз кожи дистальных отделов пальцев кистей, разрешившийся самостоятельно через несколько дней. Подчеркивается необходимость дальнейших исследований кожных проявлений COVID-19 и разработки эффективной стратегии ведения пациентов, а также мониторинга состояния реконвалесцентов

Structure impact in antenna effect of novel upper rim substituted tetra-1,3-diketone calix[4]arenes on Tb(III) green and Yb(III) NIR-luminescence

© 2016 Elsevier Ltd.Two novel calix[4]arene macrocyclic ligands functionalized with four 1,3-diketone groups at the upper and hydroxyl (3) or propyloxy-groups (6) at the lower rims were synthesized and characterized using NMR, IR spectroscopy, mass spectrometry, and elemental analysis. UV-vis spectrophotometry and ESI mass spectrometry studies indicate 1:1 complex formation of ligands 3 and 6 with Ln(III) (Ln=Tb, Yb) in alkaline DMF solutions resulted from coordination of Ln(III) with 1,3-diketonate groups. Luminescence study of Ln(III) complexes with 3 and 6 reveals significant difference in antenna effects of their deprotonated forms on both Tb(III)- and Yb(III)-centered luminescence. Comparison of ligand-centered emission for ligands 3 and 6 points to the latter as more efficient antenna for Tb(III) and Yb(III). Different conformational behavior of ligands 3 and 6 in alkaline media is assumed as a reason for the experimentally observed difference in sensitization pathways in Ln(III) complexes with 3 and 6

Electrophysiological, morphological, and ultrastructural features of the injured spinal cord tissue after transplantation of human umbilical cord blood mononuclear cells genetically modified with the VEGF and GDNF genes

© 2017 Y. O. Mukhamedshina et al.In this study, we examined the efficacy of human umbilical cord blood mononuclear cells (hUCB-MCs), genetically modified with the VEGF and GDNF genes using adenoviral vectors, on posttraumatic regeneration after transplantation into the site of spinal cord injury (SCI) in rats. Thirty days after SCI, followed by transplantation of nontransduced hUCB-MCs, we observed an improvement in H (latency period, LP) and M(Amax) waves, compared to the group without therapy after SCI. For genetically modified hUCB-MCs, there was improvement in Amax of M wave and LP of both the M and H waves. The ratio between Amax of the H and M waves (Hmax/Mmax) demonstrated that transplantation into the area of SCI of genetically modified hUCB-MCs was more effective than nontransduced hUCB-MCs. Spared tissue and myelinated fibers were increased at day 30 after SCI and transplantation of hUCB-MCs in the lateral and ventral funiculi 2.5 mm from the lesion epicenter. Transplantation of hUCB-MCs genetically modified with the VEGF and GNDF genes significantly increased the number of spared myelinated fibers (22-fold, P>0.01) in the main corticospinal tract compared to the nontransduced ones. HNA+ cells with the morphology of phagocytes and microglia-like cells were found as compact clusters or cell bridges within the traumatic cavities that were lined by GFAP+ host astrocytes. Our results show that hUCB-MCs transplanted into the site of SCI improved regeneration and that hUCB-MCs genetically modified with the VEGF and GNDF genes were more effective than nontransduced hUCB-MCs