scholarly journals De-Extinction

Genes ◽  
2018 ◽  
Vol 9 (11) ◽  
pp. 548 ◽  
Author(s):  
Ben Novak

De-extinction projects for species such as the woolly mammoth and passenger pigeon have greatly stimulated public and scientific interest, producing a large body of literature and much debate. To date, there has been little consistency in descriptions of de-extinction technologies and purposes. In 2016, a special committee of the International Union for the Conservation of Nature (IUCN) published a set of guidelines for de-extinction practice, establishing the first detailed description of de-extinction; yet incoherencies in published literature persist. There are even several problems with the IUCN definition. Here I present a comprehensive definition of de-extinction practice and rationale that expounds and reconciles the biological and ecological inconsistencies in the IUCN definition. This new definition brings together the practices of reintroduction and ecological replacement with de-extinction efforts that employ breeding strategies to recover unique extinct phenotypes into a single “de-extinction” discipline. An accurate understanding of de-extinction and biotechnology segregates the restoration of certain species into a new classification of endangerment, removing them from the purview of de-extinction and into the arena of species’ recovery. I term these species as “evolutionarily torpid species”; a term to apply to species falsely considered extinct, which in fact persist in the form of cryopreserved tissues and cultured cells. For the first time in published literature, all currently active de-extinction breeding programs are reviewed and their progress presented. Lastly, I review and scrutinize various topics pertaining to de-extinction in light of the growing body of peer-reviewed literature published since de-extinction breeding programs gained public attention in 2013.

2020 ◽  
Vol 384 (2) ◽  
pp. 6-14
Author(s):  
B. Rakishev

To substantiate the new definition of an opencast development system of minerals, the standard approaches of the systems analysis are used. The patterns of moving of the mine workings in the quarry field are expressed through the analytically found velocities of moving the bench face, moving of the bench slope and the deepening of the quarry bottom. These kinematic characteristics of the moving of mine workings are the basis for the classification of the opencast development systems. A new well-reasoned definition of an opencast development system is given. The properties inherent in it as in any system are disclosed: organization, structure, connections and functions. A new classification of the minerals opencast development systems has been created. The velocities of the bench face moving, the bench slope moving and the quarry bottom deepening were found analytically. These kinematic characteristics of the moving of the development system elements are successfully correlated their parameters with the productivity of the excavating and loading equipment. It is substantiated for the first time that the complex of the interdependent and interconnected with each other the development, stripping and excavating workings, moving at the quarry field by time for rock extraction from the Earth bowels, is a system of the minerals opencast development. For the first time in the mining science, the kinematic characteristics of the moving of mine workings in a quarry field have been theoretically found. The format of the new classification of the minerals opencast development systems is substantiated. The proposed new classification of minerals opencast development systems and the kinematic characteristics of moving of the mine workings in the quarry field make it possible to reasonably choose the development subsystems, their parameters and indicators in relation to the working dimensions of excavating and loading equipment, transport, and opencast mining technology. This solution provides a safe, high-performance, economical mining operation in the quarry.


2021 ◽  
Vol 13 (14) ◽  
pp. 7545
Author(s):  
Nikolai Bardarov ◽  
Vladislav Todorov ◽  
Nicole Christoff

The need to identify wood by its anatomical features requires a detailed analysis of all the elements that make it up. This is a significant problem of structural wood science, the most general and complete solution of which is yet to be sought. In recent years, increasing attention has been paid to the use of computer vision methods to automate processes such as the detection, identification, and classification of different tissues and different tree species. The more successful use of these methods in wood anatomy requires a more precise and comprehensive definition of the anatomical elements, according to their geometric and topological characteristics. In this article, we conduct a detailed analysis of the limits of variation of the location and grouping of vessels in the observed microscopic samples. The present development offers criteria and quantitative indicators for defining the terms shape, location, and group of wood tissues. It is proposed to differentiate the quantitative indicators of the vessels depending on their geometric and topological characteristics. Thus, with the help of computer vision technics, it will be possible to establish topological characteristics of wood vessels, the extraction of which would be used to develop an algorithm for the automatic classification of tree species.


Zootaxa ◽  
2006 ◽  
Vol 1298 (1) ◽  
pp. 1 ◽  
Author(s):  
FREDDY BRAVO ◽  
DANILO CORDEIRO ◽  
CINTHIA CHAGAS

Two new species of Brazilian Psychoda Latreille are described, and Psychoda alternata Say and P. zetoscota Quate are recorded for the first time from Brazil. Psychoda divaricata Duckhouse, already described from southern Brazil, was recorded in the northeastern part of that country, as well as in the eastern Amazon region. The supraspecific classification proposed for the species of Psychoda according to Quate (= Psychodini of Jeñek) are discussed. A new classification is suggested that considers only one genus, Psychoda, divided into 12 subgenera: subgenus Psychoda Latreille, subgenus Copropsychoda Vaillant, subgenus Falsologima Jeñek & Harten, subgenus Psychodula Jeñek, subgenus Psychomora Jeñek, subgenus Psychana Jeñek & Harten, subgenus Logima Eaton, subgenus Tinearia Schellenberg, subgenus Chodopsycha Jeñek, subgenus Ypsydocha Jeñek, subgenus Psychodocha Jeñek, and subgenus Psycha Jeñek. A list of the Psychoda species from Latin America and the Caribbean region is presented.


2021 ◽  
Vol 18 (4) ◽  
pp. 445-459
Author(s):  
V. I. Balko

The relevance and novelty of the topic of the article is connected with the fact that for the first time the improved classification of the properties of human papillary patterns and their displays and the dynamic trend of expanding the legal base of fingerprint registration in the world are considered. The goal is to systematize the properties of human papillary patterns and their representations. General scientific and special methods were used. The analysis of the literature and the author's practice allow us to identify and consider the following properties of papillary patterns and their mappings, which were divided into three groups for cognitive purposes: their own properties, the properties of mappings, and the properties of the fat-rich substance of the human papillary pattern and its trace. For the first time, the properties of the poly-fat substance of the human papillary pattern and its trace are presented, which is important in view of the trend in the development of complex fingerprint examination. For the first time, the first and second groups are conditionally divided into four subgroups: for solving identification, diagnostic, classification and situational problems. For the first time, the third group is further conditionally divided into four subgroups: according to the interaction of the human body fat with the carrier object; according to the isolation of the human body fat trace; according to the dynamics of the preservation and contrast of the display of the fat-free substance of the human papillary pattern. On the other hand, the properties of papillary patterns themselves are divided into basic properties and properties for solving identification and non-identification problems, respectively. The author's definition of the following concepts is presented: "basic properties of human papillary patterns" and "properties of human papillary patterns", "basic properties of human papillary patterns mappings" and "properties of human papillary patterns mappings", "basic properties of human papillary matter" and "properties of human papillary matter", "basic properties of human papillary matter" and" properties of human papillary matter". This provides an opportunity for specialists and teachers to improve their cognitive and practical activities, and for those responsible and competent for the organization of examinations to consider creating a center for comprehensive fingerprint examination.


Author(s):  
D.R. Kasimov

The article provides a new classification of evaluative concepts enshrined in the Criminal Code of the Russian Federation, indicates the purpose of its existence in the doctrine of criminal law. The article describes the definition of constitutive evaluative concepts that are determined as legislatively vague evaluative concepts that, by their normative-essential and functionally-substantive characteristics, are absolute, necessarily alternative, or accompanying structural features of a crime. Through the prism of the features of constitutive evaluative concepts, their varieties, essential features and functions are distinguished; interpretation (including cognitive) meaning is revealed. Moreover, the interpretation features of these evaluative concepts are considered in two interdependent aspects: the structurally-essential (associated with the types, attributes and functions of constitutive evaluative concepts) and the procedural-substantive (associated with the informative and informative activities of the interpreter). It is indicated that the interpretation features of an structurally-essential nature are, firstly, in the composition and criminogenic properties of constitutive evaluative concepts, and secondly, in the semantic structural composition, indicating a meaningful dependence of the evaluative concept on the accompanying structural features of a crime, and thirdly, legally significant functional features. At the same time, interpretative features of a procedural-substantive order are also highlighted, which include, firstly, the need for a paramount definition of the criminogenic determinant, designed to establish the structural features of a crime in a perfect act, and secondly, in an increased degree of normative casuistic derivative of these evaluative concepts. The author comes to the conclusion that constitutive evaluative concepts are interpreted according to the same logical-linguistic and legal laws, but with some marked structurally meaningful features.


2016 ◽  
Vol 9 (1) ◽  
Author(s):  
Delawar Khan ◽  
Khalid Aziz ◽  
Inayar Ur Khalil

The Laws relating the offences against the human body has completely changed with the promulgation of the Criminal Law Ordinance, commonly called Qisas and Diyat Law but the doctors in their medicolegal certificates still express their opinions according to the previous law, which causes problem for the courts to assess the true nature of injury. This practice should immediately be stopped as it confuses the facts, dims the issue and hinders the dispensation of justice. Qisas and Diyat Law has introduced new classification of hurt (injury), which is more clear and elaborate. Besides, this law has provided compensation for physical sufferings due to criminal hurts for the first time in Pakistan. The provisions for the grant of compensation for criminal damages are Arsh, Daman and diyat. In addition there is a provision of qisas. These legal terms should be clearly understood before undertaking medico legal certification.


Author(s):  
Volodymyr Dzyura ◽  

The aim of the article is to classify partially regular microreliefs that are formed on the end surfaces of rotating bodies. The article analyzes the known classifications of regular microreliefs in scientific publications and regulations. The parameters by which regular microreliefs are classified and their characteristics are analyzed. The lack of information on the classification of partially regular microreliefs formed on the end surfaces of rotating bodies as a new class of microreliefs has been established. The proposed classification reveals a set of options for the implementation of partially regular microreliefs formed on the end surfaces of bodies of rotation and their characteristics. For the first time the classification of partially regular microreliefs that are formed on the end surfaces of rotating bodies is offered, carried out on the basis of features of kinematics of technological process. It c can be a basis for creation of their mathematical models and definition of the relative area of vibro-rolling. Signs of classification are proposed to take: methods of forming a partially regular microrelief; the shape of the centerline of continuous regular micro-irregularities; mutual arrangement of adjacent grooves; mutual placement of axial lines of continuous regular micro-inequalities; groove shapes. Each of these features is divided into certain sub-features, which consist of the corresponding characteristics, which are expressed by the elements of the mode of vibration rolling, the dimensional parameters of the elements of the grooves, their mutual placement. For the first time, analytical dependences were obtained to determine the parameter of partially regular microreliefs classification formed on the end surfaces of rotating bodies by the nature of the change in the radii of the axial lines and their axial steps.


2020 ◽  
Vol 32 (3) ◽  
pp. 390-398 ◽  
Author(s):  
Andrew A. Fanous ◽  
Luis M. Tumialán ◽  
Michael Y. Wang

Kambin’s triangle is an anatomical corridor used to access critical structures in a variety of spinal procedures. It is considered a safe space because it is devoid of vascular and neural structures of importance. Nonetheless, there is currently significant variation in the literature regarding the exact dimensions and anatomical borders of Kambin’s triangle. This confusion was originally caused by leaving the superior articular process (SAP) unassigned in the description of the working triangle, despite Kambin identifying that structure in his original report. The SAP is the most relevant structure to consider when accessing the transforaminal corridor. Leaving the SAP unassigned has led to an open-handed application of the term “Kambin’s triangle.” That single eponym currently has two potential meanings, one meaning for endoscopic surgeons working through a corridor in the intact spine and a second meaning for surgeons accessing the disc space after a complete or partial facetectomy. Nevertheless, an anatomical corridor should have one consistent definition to clearly communicate techniques and use of instrumentation performed through that space. As such, the authors propose a new surgically relevant classification of this corridor. Assigning the SAP a border requires adding another dimension to the triangle, thereby transforming it into a prism. The term “Kambin’s prism” indicates the assignment of a border to all relevant anatomical structures, allowing for a uniform definition of the 3D space. From there, the classification scheme considers the expansion of the corridor and the extent of bone removal, with a particular focus on the SAP.


Information ◽  
2019 ◽  
Vol 10 (4) ◽  
pp. 142 ◽  
Author(s):  
Viktor Vyatkin

A new approach is presented to defining the amount of information, in which information is understood as the data about a finite set as a whole, whereas the average length of an integrative code of elements serves as a measure of information. In the framework of this approach, the formula for the syntropy of a reflection was obtained for the first time, that is, the information which two intersecting finite sets reflect (reproduce) about each other. Features of a reflection of discrete systems through a set of their parts are considered and it is shown that reproducible information about the system (the additive syntropy of reflection) and non-reproducible information (the entropy of reflection) are, respectively, measures of the structural order and the chaos. At that, the general classification of discrete systems is given by the ratio of the order and the chaos. Three information laws have been established: The law of conservation of the sum of chaos and order; the information law of reflection; and the law of conservation and transformation of information. An assessment of the structural organization and the level of development of discrete systems is presented. It is shown that various measures of information are structural characteristics of integrative codes of elements of discrete systems. A conclusion is made that, from the information-genetic positions, the synergetic approach to the definition of the quantity of information is primary in relation to the approaches of Hartley and Shannon.


Author(s):  
Dmitry Ruban

Some intra-cratonic basins are traditionally called ?aulacogens?. This term has persisted in the geoscience literature since its invention by Soviet geologists in the mid-20th century before the triumph of the plate tectonics, but its meaning has evolved. Attempts to change its meaning from descriptive to genetic have led to a broad spectrum of opinions on the definition of aulacogens. Some specialists related them to continental rifts, while others have restricted aulacogens to the only particular rift systems or peculiar stages in the evolution of young cratons. The Donets Basin is a typical aulacogen stretching across the southern margin of the East European Craton. A brief review of present knowledge of this basin shows that its nature is rather incompatible with the present understanding of aulacogens. Instead, the new classification of rifts offers a more precise terminology for its exact characteristics. It is suggested that the term ?aulacogen? should only be restricted to those basins for which it has been applied historically.


Sign in / Sign up

Export Citation Format

Share Document