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The influence of industrial emissions of zinc plant on the properties of chernozem soil.
No full textEast Kazakhstan is a storehouse of ore raw materials. Here the main ore-mining industrial
objects are concentrated. Most of these deposits and ore deposits are characterized
by polymetallic and substantially lead-zinc ore composition. When developing
ore deposits, the soil-vegetation cover of the territories is disturbed, and
sometimes their complete destruction occurs. On the investigated object leached
and podzolized chernozems are widespread. The study of the soil cover at the territories
adjacent to the zinc plant showed a negative impact of the plant's emissions
on the soil and vegetation cover. Thus, where there is a major outflow from the
wind rose, there are manifestations of deep erosion processes. The main release is
actively manifested in a radius of 2 km., but the effect takes place at a distance of
10-20 km. The soil cover adjacent to the zinc plant of the territory is devoid of
vegetation and subjected to erosion processes. Raws, grooves, aryks were formed,
continuous washing of the upper layers of the chernozem soil into the river goes
on.
Studies of physical, physicochemical, chemical and biological properties of soil
have shown a negative impact of plant emissions on the main parameters of soil
fertility. Thus, the granulometric composition changes due to the accumulation of
fine silty-silt fractions and a more compact, washable illuvial horizon is formed.
The volumetric mass of degraded contaminated soils is higher than in chernozem
soils of undisturbed landscapes. Emissions of heavy metal plant destroys the composition
of organic acids, which, accordingly, affects the aggregate state. Absorbed
calcium is expelled, aggregates are destroyed and condensation occurs, especially
in the upper horizon.
The content of common humus in undisturbed landscapes in the upper horizon is
6.7%. The leached chernozem eroded with a partial rinse of the humus horizon loses
up to 20% of humus and contains 4.9%. Heavy metals in the soil exceed the
MPC in two to ten times. The main pollutants are zinc, lead, copper. Pollution affected
the qualitative and quantitative composition of soil biota
The influence of industrial emissions from a zinc factory on the properties of Chernozem soil
No full textThis article describes the influence of zinc factory emissions on soil cover and vegetation cover of the lands of East Kazakhstan. It is shown how the physical properties of water affect soil moisture. The authors consider how heavy metals destroy the composition of organic acids and how it affects the aggregate state of the soil cover
Morphogenetic characteristics of chernozem leached in mining enterprises pollution conditions
Full text linkThe article presents the results of comparative studies on the uncontaminated (virgin) leached chernozem soil in terms of heavy metal contamination due to zinc plant operations. Study object location is given. The territory under the influence of plant emissions is devoid of vegetation. Everywhere on the soil surface there are manifestations of deep erosion processes and continuous erosion of the topsoil. Soil cuts with morphogenetic descriptions, physical, physico-chemical and biological characteristics of the soil were laid at the objects. The soil cover under the influence of pollution has undergone degradation and led to transformational processes of particle size distribution, humus content, absorbed bases, the elemental composition of the food regime of the soil, as well as on the vital activity of the soil biota
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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