Coregonids of Russia: Evolutionary genetic approach in assessment of the current state of biodiversity

2017 ◽  
Vol 189 (3) ◽  
pp. 181-192
Author(s):  
DmitryV. Politov
Keyword(s):  
Genetic Approach ◽  
Current State ◽  
Evolutionary Genetic

Designing nootropic dipeptides using an evolutionary-genetic approach

2006 ◽  
Vol 40 (1) ◽  
pp. 18-22
Author(s):  
T. A. Gudasheva ◽  
S. S. Trofimov ◽  
A. A. Morozova ◽  
S. V. Nikitin ◽  
R. U. Ostrovskaya ◽  
...  
Keyword(s):  
Genetic Approach ◽  
Evolutionary Genetic

An Evolutionary Genetic Approach to Understanding Plastid Gene Function: Lessons from Photosynthetic and Nonphotosynthetic Plants

1990 ◽  
pp. 2381-2388 ◽  
Author(s):  
Jeffrey D. Palmer ◽  
Patrick J. Calie ◽  
Claude W. dePamphilis ◽  
John M. Logsdon ◽  
Deborah S. Katz-Downie ◽  
...  
Keyword(s):  
Gene Function ◽  
Genetic Approach ◽  
Plastid Gene ◽  
Evolutionary Genetic

scholarly journals Coastal marsh soils in Poland: characteristics and problems of classification

2016 ◽  
Vol 67 (1) ◽  
pp. 37-44 ◽  
Author(s):  
Piotr Hulisz
Keyword(s):  
Classification System ◽  
Small Area ◽  
Soil Classification ◽  
Coastal Marsh ◽  
Genetic Approach ◽  
Alluvial Sediments ◽  
Baltic Coast ◽  
Current State ◽  
Substantial Modification ◽  
Quantitative Genetic

AbstractThis paper presents the current state of knowledge concerning the genesis, properties and taxonomic position of soils developed from marine and marine-alluvial sediments in Poland, called “marsh soils”. They have not as yet been identified in the fifth edition of the Polish Soil Classification (2011). However, the author’s results demonstrate that, despite occupying only a small area along the Polish Baltic coast, these soils clearly show a distinct typological specificity. This confirms the need to include the marsh soils in the Polish classification system. Therefore, the creation a separate unit within the order of weakly-developed soils was proposed. This comprehensive proposal was fully compatible with the quantitative-genetic approach used in the fifth edition. However, this proposal may not be optimal in the context of a substantial modification of the Polish classification system, e.g. by the introduction of completely quantitative hierarchical key. Because of the close taxonomic relationships between marsh, alluvial and gley soils, it seems necessary to discuss the approach used in the current edition of the WRB classification (2015).

scholarly journals Development of ideas within the framework of the genetic approach to the classification of forest types

2020 ◽  
Vol 27 (1) ◽  
Author(s):  
Valery Fomin
Keyword(s):  
New Technologies ◽  
Anthropogenic Impacts ◽  
Genetic Approach ◽  
Forest Types ◽  
Forming Process ◽  
Current State ◽  
The Relationship ◽  
Theoretical Foundations ◽  
Forest Engineering

This paper presents an analysis of achievements and the current state of one of the main trends of forest typological studies in the Russian Federation, namely, the genetic approach to the classification of forest types. The article describes the theoretical foundations of genetic typologies created by the founders of this approach. The article explains the relationship between the concepts of the forest-forming process and forest types. This article also includes a detailed description of the concept of forest-forming epochs according to the degree and depth of human impact on forests, as well as the forms and technical means of this impact, with examples of the practical use of genetic typologies in forest engineering and management. The article provides an analysis of the main directions of development and improvement of genetic typologies, taking into account anthropogenic impacts at different levels and strengths, climate change, and the use of new technologies to reveal the potential of the genetic approach to the classification of forest types.

Evolution, genes, and inter‐disciplinary personality research

2007 ◽  
Vol 21 (5) ◽  
pp. 639-665 ◽  
Author(s):  
Lars Penke ◽  
Jaap J. A. Denissen ◽  
Geoffrey F. Miller
Keyword(s):  
Environmental Factors ◽  
Mate Choice ◽  
Evolutionary Theory ◽  
Genetic Model ◽  
Integrative Model ◽  
Genetic Approach ◽  
Genetic Theory ◽  
Personality Research ◽  
Evolutionary Genetic ◽  
Scientific Status

Most commentaries welcomed an evolutionary genetic approach to personality, but several raised concerns about our integrative model. In response, we clarify the scientific status of evolutionary genetic theory and explain the plausibility and value of our evolutionary genetic model of personality, despite some shortcomings with the currently available theories and data. We also have a closer look at mate choice for personality traits, point to promising ways to assess evolutionarily relevant environmental factors and defend higher‐order personality domains and the g‐factor as the best units for evolutionary genetic analyses. Finally, we discuss which extensions of and alternatives to our model appear most fruitful, and end with a call for more inter‐disciplinary personality research grounded in evolutionary theory. Copyright © 2007 John Wiley & Sons, Ltd.

ESEM - A multipurpose surface Electron Microscope

1986 ◽  
Vol 44 ◽  
pp. 632-633 ◽  
Author(s):  
G.D. Danilatos
Keyword(s):  
Electron Microscope ◽  
Room Temperature ◽  
Environmental Scanning ◽  
Gas Composition ◽  
Saturated Water Vapor ◽  
Surface Electron ◽  
Current State ◽  
Saturated Water ◽  
New Type ◽  
Temperature And Pressure

Over recent years a new type of electron microscope - the environmental scanning electron microscope (ESEM) - has been developed for the examination of specimen surfaces in the presence of gases. A detailed series of reports on the system has appeared elsewhere. A review summary of the current state and potential of the system is presented here.The gas composition, temperature and pressure can be varied in the specimen chamber of the ESEM. With air, the pressure can be up to one atmosphere (about 1000 mbar). Environments with fully saturated water vapor only at room temperature (20-30 mbar) can be easily maintained whilst liquid water or other solutions, together with uncoated specimens, can be imaged routinely during various applications.

Recent applications of TEM to the study of interfaces

1990 ◽  
Vol 48 (4) ◽  
pp. 308-309
Author(s):  
C. Barry Carter
Keyword(s):  
High Resolution ◽  
Sample Preparation ◽  
Grain Boundaries ◽  
Diffuse Scattering ◽  
Imaging Techniques ◽  
Amorphous Material ◽  
Contrast Imaging ◽  
Current State ◽  
Actual Nature ◽  
High Resolution Images

This paper will review the current state of understanding of interface structure and highlight some of the future needs and problems which must be overcome. The study of this subject can be separated into three different topics: 1) the fundamental electron microscopy aspects, 2) material-specific features of the study and 3) the characteristics of the particular interfaces. The two topics which are relevant to most studies are the choice of imaging techniques and sample preparation. The techniques used to study interfaces in the TEM include high-resolution imaging, conventional diffraction-contrast imaging, and phase-contrast imaging (Fresnel fringe images, diffuse scattering). The material studied affects not only the characteristics of the interfaces (through changes in bonding, etc.) but also the method used for sample preparation which may in turn have a significant affect on the resulting image. Finally, the actual nature and geometry of the interface must be considered. For example, it has become increasingly clear that the plane of the interface is particularly important whenever at least one of the adjoining grains is crystalline.A particularly productive approach to the study of interfaces is to combine different imaging techniques as illustrated in the study of grain boundaries in alumina. In this case, the conventional imaging approach showed that most grain boundaries in ion-thinned samples are grooved at the grain boundary although the extent of this grooving clearly depends on the crystallography of the surface. The use of diffuse scattering (from amorphous regions) gives invaluable information here since it can be used to confirm directly that surface grooving does occur and that the grooves can fill with amorphous material during sample preparation (see Fig. 1). Extensive use of image simulation has shown that, although information concerning the interface can be obtained from Fresnel-fringe images, the introduction of artifacts through sample preparation cannot be lightly ignored. The Fresnel-fringe simulation has been carried out using a commercial multislice program (TEMPAS) which was intended for simulation of high-resolution images.

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