40,140 research outputs found

    From the correspondence of M. P. Drahomanov: two unknown letters to M. V. Vodovozov of 1894

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    This publication introduces into scientific discourse little-known letters of prominent Ukrainian scholar, politician and publicist M. P. Drahomanov (1841-1895), discovered in the fond of V. I. Vernadsky in the Archive of the Russian Academy of Sciences in Moscow. Two letters written in the latest period of the life of M. P. Drahomanov, which are addressed to young economist and publicist Mykola Vasyliovych Vodovozov (1870-1896), expand the source base not only for M. P. Drahomanov’s biographers. They show his ties with Russian liberals, who later formed the core of the party of constitutional democrats. A preface to the publication contains a biography of M. V. Vodovozov, and the author makes a hypothesis on the history of an acquaintance of the correspondent and the addressee, which could be connected with M. V. Vodovozov’s brother, V. V. Vodovozov, and members of the “Shelter Fraternity”, and through them with M. P. Drahomanov. The analysis of the published letters proves that M. P. Drahomanov endeavored to widen through the “Shelter Fraternity” members his contacts with democratic circles in Russia, and also to find financial support for publishing letters of Bakunin and Struve

    Informetrics on M. N. Srinivas

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    M. N. Srinivas, the well known sociologist is widely recognised as architect of modern Indian sociology and social anthropology. His publications have been analysed by year, domain, authorship pattern, channels of communication used. Keywords, etc. The results indicate that the papers published by him are of a nature that qualify him to be a 'role model' for the younger generations to emulate. By the end of 1995, Srinivas had to his credit 144 papers which, included 33 broad papers in sociology and anthropology; 18 papers in social change; 28 papers in village studies; 12 papers on religion; 17 papers on caste and 36 papers of general popular interest. The periods 1958-61 and 1974-77, when Srinivas was 38-41 and 58-61 years old. were his most productive periods with highest publication activity

    The long-wavelength view of GG Tau A: rocks in the ring world

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    We present the first detection of GG Tau A at centimetre wavelengths, made with the Arcminute Microkelvin Imager Large Array at a frequency of 16 GHz (λ = 1.8 cm). The source is detected at >6 σrms with an integrated flux density of S16GHz = 249 ± 45 µJy. We use these new centimetre-wave data, in conjunction with additional measurements compiled from the literature, to investigate the long-wavelength tail of the dust emission from this unusual protoplanetary system. We use an MCMC-based method to determine maximum likelihood parameters for a simple parametric spectral model and consider the opacity and mass of the dust contributing to the microwave emission. We derive a dust mass of Md ~ 0.1 Msun, constrain the dimensions of the emitting region and find that the opacity index at λ > 7 mm is less than unity, implying a contribution to the dust population from grains exceeding ~4 cm in size. We suggest that this indicates coagulation within the GG Tau A system has proceeded to the point where dust grains have grown to the size of small rocks with dimensions of a few centimetres. Considering the relatively young age of the GG Tau association in combination with the low derived disc mass, we suggest that this system may provide a useful test case for rapid core accretion planet formation models

    ARTINIAN M\mathbf{M}-COMPLETE, M\mathbf{M}-REDUCED, AND MINIMALLY M\mathbf{M}-COMPLETE ASSOCIATIVE RINGS

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    In 1996, the first author defined analogs of the concepts of complete (divisible), reduced, and periodic abelian groups, well-known in the theory of abelian groups, for arbitrary varieties of algebras. In 2021, the first author proposed a modification of the concepts of completeness and reducibility, which is more natural in the case of associative rings. The paper studies the modification of these concepts for associative rings. Artinian M\mathbf{M}-complete, M\mathbf{M}-reduced rings, and minimally M\mathbf{M}-complete associative nilpotent rings, simple rings with unity, and finite rings are characterized

    M/V Harry Truman on the Mississippi River, 1951

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    View of the M/V Harry Truman, of the Federal Barge Line, attempting to break a path through ice on the Mississippi River anear Cairo, Illinois, February 1951.https://digitalcommons.memphis.edu/speccoll-mss-mpressscimitar5/1030/thumbnail.jp

    The impact of the estimation strategy of the cerebral critical closing pressure on the autoregulation index

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    Cerebral autoregulation (CA) encompasses a series of physiological mechanisms that are necessary to regulate blood flow in the brain. The procedure for CA assessment via the autoregulatory index (ARI) requires the estimate of the critical closing pressure (CrCP). The study aims at investigating the impact of the strategy exploited for CrCP estimation on ARI by comparing three approaches: i) fixed CrCP at 12 mmHg (CrCP12); ii) first harmonic (H1) method applied to waveforms of arterial pressure (AP) and cerebral blood velocity (CBv); iii) 2-point technique using mean and diastolic AP and CBv values (2Pm). Analysis was carried out over AP and CBv signals recorded in 25 healthy subjects (age: 44 ± 10 yrs, 12 females, 13 males) at rest in supine position and during active standing. Computation of CrCP was complemented by the assessment of the resistance-area product (RAP). We found that the H1 and 2Pm methods led to different values of CrCP and RAP. However, the strategy selected for the CrCP computation did not affect the ARI estimation, and this result held regardless of the experimental condition. We conclude that the CrCP12 strategy can be safely utilized instead of more complex methods for the CA characterization based on ARI

    Illuminaçao Apologetica do retrato de Morteçor en que aparecem com mais vivas côres os erros do author do novo Methodo, e seu Apologista ...

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    Fecha sacada de la pág.2 y 159Sign.: A-V\p4\sError tipográfico de signatura : a B\b2\s llama B\b3\

    Genotype and phenotype report on patients with combined deficiency of factor V and factor VIII in Iran

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    Combined factor V (FV) and factor VIII (FVIII) deficiency is a rare autosomal recessive bleeding disorder characterized by mild-to-moderate bleeding. Epistaxis, postsurgical bleeding and menorrhagia are the most common symptoms. The aim of this study is to report the phenotype-genotype characterization carried out in patients affected with combined FV and FVIII deficiency from Iran. A cross-sectional study was conducted in Shiraz Hemophilia Center, southern Iran. Twelve cases, seven men and five women coming from eight families were included in our study after taking consent form. Coagulation activity for all patients was measured. All exons and intron-exon junctions of lectin mannose binding protein 1 (LMAN1) gene and multiple coagulation factor deficiency 2 genes were amplified by PCR, and subsequently sequenced by the Sanger method. Patients age ranged from 6 to 59 years mean +/- SD: 23.8 +/- 15.4 years and median: 22 years. No patient presented with severe bleeding symptom. Only one patient had severe FV and FVIII deficiency (both factor levels <1%). Four different type of mutations (duplication, insertion, splice site and nonsense), occurring in different locuses, were identified on LMAN1 gene in 12 Iranian patients. There was a significant correlation between FV and FVIII levels, which is indicative of association with loss of function of LMAN1 gene, and reduced plasma levels of both factors. Our study showed that all of our characterized patients with combined FV and FVIII deficiency present different homozygous mutations on LMAN1 gene introducing a premature stop codon. Larger studies are needed to calculate the correlation between factor levels, genetic and bleeding symptoms

    V. BRUSOV’S ARTICLE ON M. LOMONOSOV. INTRODUCTORY REMARKS BY IRINA ATAJANYAN (YEREVAN)

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    The author publishes V. Brusov’s paper «On Lomonosov». According to V. Brusov, M. Lomonosov is «the father of the Russian literature». Significantly, V. Brusov overlooked M. Lomonosov’s poetry, with a view towards his works on prosody. The publication’s author concludes that V. Brusov intended to write a research paper on M. Lomonosov’s life and creativity
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