Surface reactions with participation of oxides of molybdenum and tungsten

The kinetics of surface reactions in one-dimensional and radial (two-dimensional) distribution of diffusant MoO3 (WO3) on the surface of the substrate MeO (Me is Cd, Ni, Pb, Mn, Cu) were investigated. A kinetic equation satisfactorily describes the rate of surface reactions in the case of radial distribution of diffusant on the substrate. It’s found that when the radial distribution of diffusant the growth of layer on the substrate surface eventually slows down and stops almost completely, due to the outflow of the diffusant deeps into the substrate. When the one-dimensional distribution of diffusant the surface interaction is not slowed down and does not stop at an arbitrarily large times

Surface reactions with participation of oxides of molybdenum and tungsten: the influence of external factors

This work is a continuation of the article “Surface reactions with participation of oxides of molybdenum and tungsten”, published in the previous issue of the journal. The influence of the electric field and the pressure of oxygen in the gas phase on the rate of surface reactions for the synthesis of molybdates of manganese and copper were investigated. It’s found that for the synthesis reaction of molybdate of copper the nature of the dependency of the rate of synthesis and rate of surface reactions from the external parameters are the same, indicating the crucial contribution of surface diffusion to the reactive mass transfer. For the synthesis reaction of molybdate of manganese the dependences of the rate of synthesis and of rate of surface reactions by external parameters differ, indicating that for this reaction, surface diffusion isn’t the main mechanism of mass transfer

A delay in processing for repeated letters : evidence from megastudies

Repetitions of letters in words are frequent in many languages. Here we explore whether these repetitions affect word recognition. Previous studies of word processing have not provided conclusive evidence of differential processing between repeated and unique letter identities. In the present study, to achieve greater power, we used regression analyses on existing mega-studies of visual word recognition latencies. In both lexical decision (in English, Dutch, and French) and word naming (in English), there was strong evidence that repeated letters delay visual word recognition after major covariates are partialed out. This delay was most robust when the repeated letters occurred in close proximity but not in immediate adjacency to each other. Simulations indicated that the observed inhibitory pattern of repeated letters was not predicted by three leading visual word recognition models. Future theorizing in visual word recognition will need to take account of this inhibitory pattern. It remains to be seen whether the appropriate adjustment should occur in the representation of letter position and identity, or in a more precise description of earlier visual processes

Evaluación de la dinámica temporal de la materia orgánica en la cuenca de klyazma utilizando monitoreo remoto y qgis trends.earth

El artículo está dedicado al estudio de la dinámica de los procesos biológicos en los paisajes en los limites de la zona de captación. Se eligió como zona modelo la cuenca del río Klyazma (que esta entrando con un afluente de cuarto orden a la cuenca del Volga), que es una combinación bastante compleja de diferentes paisajes. El estudio se basó en datos de teledetección. Se eligieron como parámetros los indicadores de fito-productividad y de carbono del suelo. Se estableció que en los distintos paisajes los procesos biológicos difieren tanto en velocidad como en intensidad y responden de forma ambigua a los cambios en los parámetros climáticos y al cambio en el uso del suelo. Sin embargo, en general, la cuenca hidrográfica, como ecosistema único, mostró suficiente estabilidad en los procesos dinámicos. Esto indica que los ecosistemas naturales holísticos tienen internas propiedades compensatoria

Threshold characteristics cavityless lasing in composites with agglomerated metal and dielectric nanoparticles

The paper presents results of experimental studies of the threshold characteristics of lasing in thin layers (20 microns) of a solution of rhodamine 6G with agglomerates of metal and dielectric nanoparticles. The maximum decrease in the lasing threshold was more than two orders for a wide range of changes in the concentration of metal agglomerates. For dielectric nanoparticle agglomerates range of maximum lowering of the threshold is 5 times lower. This is due to different mechanisms of formation of lasing in these environments.Comparing the efficiency of lasing in layers with metal agglomerates proves on expediency using them to create a low threshold microlasers

Analysis of the placental tissue transcriptome of normal and preeclampsia complicated pregnancies

Preeclampsia is one of the most severe gestational complications which is one of the leading causes of maternal and perinatal morbidity and mortality. A growth in the incidence of severe and combined forms of the pathology has been observed in recent years. According to modern concepts, inadequate cytotrophoblast invasion into the spiral arteries of the uterus and development of the ischemia-reperfusion syndrome in the placental tissue play the leading role in the development of preeclampsia, which is characterized by multipleorgan failure. In this regard, our work was aimed at studying the patterns of placental tissue transcriptome that are specific to females with PE and with physiological pregnancy, as well as identifying the potential promising biomarkers and molecular mechanisms of this pathology. We have identified 63 genes whose expression proved to differ significantly in the placental tissue of females with PE and with physiological pregnancy. A cluster of differentially expressed genes (DEG) whose expression level is increased in patients with preeclampsia includes not only the known candidate genes that have been identified in many other genome-wide studies (e.g., LEP, BHLHB2, SIGLEC6, RDH13, BCL6), but also new genes (ANKRD37, SYDE1, CYBA, ITGB2, etc.), which can be considered as new biological markers of preeclampsia and are of further interest. The results of a functional annotation of DEG show that the development of preeclampsia may be related to a stress response, immune processes, the regulation of cell-cell interactions, intracellular signaling cascades, etc. In addition, the features of the differential gene expression depending on preeclampsia severity were revealed. We have found evidence of the important role of the molecular mechanisms responsible for the failure of immunological tolerance and initiation of the pro-inflammatory cascade in the development of severe preeclampsia. The results obtained elaborate the concept of the pathophysiology of preeclampsia and contain the information necessary to work out measures for targeted therapy of this disease.

Становление судебной землеустроительной экспертизы в системе судебно-экспертных учреждений Минюста России

The ever-increasing need for land survey expertise in judicial proceedings, as well as the complexity of this branch of forensic practice require a special approach to the interpretation of theoretical foundations of forensic land surveying, which led to the author's attempt to define its basic theoretical concepts. The article also considers and describes the most common tasks performed by forensic land survey practitioners in land dispute cases. Постоянно растущая потребность судопроизводства в землеустроительных исследованиях и сложность их проведения требуют особого подхода к осмыслению теоретических основ судебной землеустроительной экспертизы, что и обусловило попытку автора определить основные теоретические ее понятия. В статье также рассмотрены и охарактеризованы наиболее распространенные задачи, выполняемые судебными экспертами-землеустроителями при рассмотрении земельных споров.

Cellular internalisation, bioimaging and dark and photodynamic cytotoxicity of silica nanoparticles doped by {Mo₆I₈}⁴⁺ metal clusters

Silica nanoparticles (SNPs) doped by hexanuclear molybdenum cluster complexes [{Mo₆X₈}L₆]n (X = Cl, Br, or I; L = various inorganic or organic ligands) have been recently suggested as materials with a high potential for biomedical applications due to both the outstanding photoluminescent properties and the ability to efficiently generate singlet oxygen upon photoirradiation. However, no studies were undertaken so far to prove this concept. Therefore, here we examined the potential of photoluminescent SNPs doped by {Mo₆I₈}⁴⁺ for such applications as bioimaging and photodynamic therapy using human epidermoid larynx carcinoma (Hep-2) cell line as a model. Our results demonstrated both: (i) significant luminescence from cells with internalised molybdenum cluster doped SNPs combined with the low cytotoxicity of particles in the darkness and (ii) significant cytotoxicity of the particles upon photoirradiation. Thus, this research provides strong experimental evidence for high potential of molybdenum cluster doped materials in such biomedical applications as optical bioimaging, biolabeling and photodynamic therapy

Contextual and Individual-Personal Predictors of Russians’ Adaptation in Estonia and Kyrgyzstan

Background. Acculturation strategy choice and success of adaptation to new cultural environment depend both on individual characteristics of participants of intercultural interaction and on characteristics of the context. In this regard, it is important to apply an integrated approach to study the mutual contribution of contextual and individual-personal predictors of acculturation. Objective. The study aims at identifying complex contextual and individual-personal predictors of adaptation of Russians in Estonia and Kyrgyzstan, and revealing relationship between these complex predictors, acculturation strategies, and psychological well-being of Russians in these republics. Study Participants. The sample consisted of 302 Russians in Estonia (Mage = 37.51; SD = 16.55; 52% females) and 300 Russians in Kyrgyzstan (Mage = 35.56; SD = 17.40; 64,8% females). Methods. We used scales from the MIRIPS questionnaire, instruments for measuring identities and intercultural attitudes developed in CSCR of HSE, and local identity scale by O. Droseltis and V.L. Vignoles. Results. The study revealed three complex predictors of adaptation in each country: perceived inclusiveness of context, ethnocultural identity and closeness to host country. These three complex factors in both countries were positively associated with life satisfaction, and in Estonia with self-esteem as well. Perceived inclusiveness of the context and closeness to host country negatively related to separation and positively related to integration, ethno-cultural identity positively related to separation. In Kyrgyzstan we also revealed culture-specific positive links between ethno-cultural identity and integration and between closeness to host society and assimilation. Conclusion. The study of the mutual contribution of personal and contextual characteristics to success in adaptation to new cultural environment contributes to a deeper understanding of acculturation as a complex dynamic process, the components of which are in constant interaction with each other