Arachnoxylon from the Middle Devonian of southwestern Virginia

1983 ◽  
Vol 61 (4) ◽  
pp. 1283-1299 ◽  
Author(s):  
William E. Stein Jr. ◽  
David C. Wight ◽  
Charles B. Beck
Keyword(s):  
Middle Devonian ◽  
Main Axis ◽  
Supplementary Information ◽  
Monotypic Genus ◽  
Primary Xylem ◽  
New Material ◽  
Shale Formation ◽  
Definition Of ◽  
A Minor ◽  
First Time

Eight specimens from the Middle Devonian Purcell Member of the Millboro Shale Formation in southwestern Virginia conform to a recent definition of the previously monotypic genus Arachnoxylon. The new material provides supplementary information on several tissue regions of the main axis, including evidence on variability in the structure of the protoxylem, and on departure of the large, or "major" traces. In addition, evidence is provided here for the first time on a discrete region, immediately adjacent to the primary xylem, containing probable conducting elements of the primary phloem, on the structure of the epidermis, and on the presence of multicellular superficial emergences. Although clearly assignable to Arachnoxylon, all but one of our specimens vary significantly from previous specimens in the genus in several features which may be interpreted as relating directly or indirectly to size. It is possible that all specimens in Arachnoxylon represent portions of a single kind of plant. However, organic connection between the large and small forms has not been demonstrated. We elect, therefore, to establish A. minor sp. n. for the smaller specimens.

scholarly journals TYPES OF INDIVIDUAL WOMEN EROTIC CODE

2018 ◽  
Keyword(s):  
Life Experience ◽  
Married Couples ◽  
Professional Activity ◽  
Self Reflection ◽  
Early Life Experience ◽  
New Material ◽  
Definition Of ◽  
The Individual ◽  
The Impact ◽  
First Time

The article is devoted to the current issue of sexuality. Significant expansion and development of psychologists’ professional activity necessitate creating of generalized classification of individuals and married couples’ behavioral erotic types. The destruction of self-reflection, self-perception and the difficulty of interpersonal understanding are due to the substitution of concepts. The study of sexual-psychological characteristics of behavioral patterns of women in erotic relationships is very important in this regard. The new material on the topic under study is generalized. Erotic imagination functions and erotic images impact on the process of forming a fixed erotic Image of a sexual partner in women are determined. The impact of early life experience (imprinting) influenced on the individual erotic code formation is determined. Several motivational schemes of sexual behavior are described. Authors submit the definition of «individual erotic code» for the first time. «Individual erotic code» is found out as the unified recording system of the individual model erotic behavior and her «ideal partner» reactions on this behavior. The types of women individual erotic code, based on the concept of archetypes (K.G. Jung, D. S. Bolen) study are defined. Types of individual erotic code were named after the ancient Greek goddesses: Artemis, Athena, Hestia, Hera, Demeter, Persephone, Aphrodite. The attention is focused on the deep analysis of individual women erotic code stages realization, such as, the genesis of erotic impulse, the tempting process, the sexual act behavior, the pregnancy, the caring of posterity. Materials of research can be used in the practical work of psychologists and psychotherapists which working both with married couples, as well as in individual work with the client.

The discovery of Lepeophtheirus acutus Heegaard, 1943 (Copepoda: Caligidae) from two new elasmobranch hosts in the Mediterranean Sea, and a comparative redescription of Lepeophtheirus rhinobati Luque, Chaves et Cezar, 1998

2018 ◽  
Vol 63 (3) ◽  
pp. 454-473 ◽  
Author(s):  
Argun Akif Özak ◽  
Alper Yanar ◽  
Yetkin Sakarya ◽  
Geoffrey Allan Boxshall
Keyword(s):  
Original Description ◽  
The United States ◽  
Supplementary Information ◽  
Diagnostic Characters ◽  
Host Genus ◽  
Iskenderun Bay ◽  
New Material ◽  
Branchial Cavity ◽  
First Time ◽  
Scanning Electron

Abstract In this study, supplementary information on the morphology of the siphonostomatoid copepod Lepeophtheirus acutus Heller, 1865 is given based on new material collected from the ventral body surface and mouth cavity of common guitarfish, Rhinobatos rhinobatos (Linnaeus) and from the branchial cavity of bull ray, Aetomylaeus bovinus (Geoffroy Saint-Hilaire) caught in Iskenderun Bay, Turkey. This is the first report of L. acutus from Mediterranean waters. Key diagnostic characters of both sexes are reported, supported by light and scanning electron microscopy observations. In addition, Lepeophtheirus rhinobati Luque, Chaves et Cezar, 1998, which is closely related to L. acutus and has been reported from the same host genus, Rhinobatos, is reexamined based on paratypes stored in the collections of the United States National Museum of Natural History. Some of the key diagnostic characters which were incompletely known or lacking in the original description of both sexes of L. rhinobati are redescribed and/or presented for the first time.

Systematic position of the monotypic Azorean genus Falbouria Dyte with notes on the definition of Chrysotus Meigen (Diptera: Dolichopodidae)

Zootaxa ◽  
2012 ◽  
Vol 3489 (1) ◽  
pp. 81 ◽  
Author(s):  
RENATO SOARES CAPELLARI ◽  
DALTON DE SOUZA AMORIM
Keyword(s):  
Type Species ◽  
Systematic Position ◽  
Monotypic Genus ◽  
Generic Status ◽  
Separate Genus ◽  
The Core ◽  
Definition Of ◽  
First Time

The systematic position and the generic status of the monotypic genus Falbouria Dyte (Dolichopodidae: Diaphorinae) are evaluated. The type-species of the genus, F. acorensis (Parent), endemic to the Azores, is re-described, and hypopygial and oviscapt morphology illustrated in detail for the first time. Falbouria is kept as a separate genus, but close to Chrysotus Meigen, which is certainly paraphyletic (or even polyphyletic) in its present composition. A brief discussion on the delimitation of Chrysotus is provided and its laesus-group of species is suggested as the core clade of the genus.

Towards a Minor Poetry: Reading Twentieth-Century French Poetry with Deleuze–Guattari and Bakhtin

Paragraph ◽  
2019 ◽  
Vol 42 (2) ◽  
pp. 135-153
Author(s):  
Daisy Sainsbury
Keyword(s):  
Twentieth Century ◽  
French Language ◽  
Poetic Language ◽  
Minor Literature ◽  
Language System ◽  
Poetic Discourse ◽  
Poetry Reading ◽  
Century Poetry ◽  
Definition Of ◽  
A Minor

Drawing on Deleuze and Guattari's analysis of minor literature, deterritorialization and agrammaticality, this article explores the possibility of a ‘minor poetry’, considering various interpretations of the term, and interrogating the value of the distinction between minor poetry and minor literature. The article considers Bakhtin's work, which offers several parallels to Deleuze and Guattari's in its consideration of the language system and the place of literature within it, but which also addresses questions of genre. It pursues Christian Prigent's hypothesis, in contrast to Bakhtin's account of poetic discourse, that Deleuze and Guattari's notion of deterritorialization might offer a definition of poetic language. Considering the work of two French-language poets, Ghérasim Luca and Olivier Cadiot, the article argues that the term ‘minor poetry’ gains an additional relevance for experimental twentieth-century poetry which grapples with its own generic identity, deterritorializing established conceptions of poetry, and making ‘minor’ the major poetic discourses on which it is contingent.

YOUTH CRIMINAL SUBCULTURE AS A FACTOR IN THE FORMATION OF THE PERSONALITY OF A MINOR CRIMINAL

2020 ◽  
Vol 10 (3) ◽  
pp. 177-180
Author(s):  
VERA SHUNYAEVA ◽  
Keyword(s):  
Research Method ◽  
Negative Impact ◽  
System Research ◽  
Scientific Methods ◽  
General Scientific ◽  
Definition Of ◽  
A Minor ◽  
Method Analysis

The article is devoted to the research of the youth criminal subculture and its impact on the personality of under-aged. In the course of analysis of this negative impact, a definition of the criminal subculture of under-aged was proposed. The main principles of such a criminal subculture as AUE (the acronym, transcribed from Russian: АУЕ or А.У.Е., comes from «Арестантский уклад един» / “Prisoners Unity (Solidarity)” are defined. The reasons contributing to the development of this negative phenomenon and the typical fea- tures of a minor sharing the ideology of the AUE were identified. The methods for counteracting the AUE were proposed. The method- ological basis of the research is formed by general scientific methods: dialectical, system research method, analysis, synthesis, induction, deduction, analogy, etc., as well as such private scientific methods as comparative legal, formal legal, structural and functional, statistical ones. The authors relied on the results of research by Russian and foreign legal scholars, sociologists, psychologists.

NOTE ON TWO UMBELLIFERAE TAXA OF SOUTH-EASTERN KAZAKHSTAN, INVALIDLY PUBLISHED BY M. S. BAJTENOV, "БОТАНИЧЕСКИЙ ЖУРНАЛ"

2012 ◽  
pp. 650-658
Author(s):  
М.Г. ПИМЕНОВ ◽  
E.V. KLJUYKOV ◽  
G.V. DEGTJAREVA
Keyword(s):  
Rare Species ◽  
Monotypic Genus ◽  
Southern Limit ◽  
South Eastern ◽  
Middle Asia ◽  
New Material ◽  
Eastern Kazakhstan

New material on a rare species Silaum saxatilis (Umbelliferae) from southern limit of the Dzungarian Alatau (South-Eastern Kazakhstan) allowed to describe the structure of its fruits. The species is assigned to a distinct monotypic genus Tschulaktavia, the generic name was proposed by M. S. Bajtenov and validated here. Another speciens described by Bajtenov, Stenotaenia iliensis, is synonymized with Hyalolaena tshuiliensis. The genus Stenotaenia does not occus in Kazakhstan and the Middle Asia. 658

scholarly journals New Challenges for Biobanks: Accreditation to the New ISO 20387:2018 Standard Specific for Biobanks

BioTech ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 13
Author(s):  
Pasquale De Blasio ◽  
Ida Biunno
Keyword(s):  
Performance Monitoring ◽  
Quality Management System ◽  
Internal Audit ◽  
Accreditation Body ◽  
Accreditation Process ◽  
Testing Facility ◽  
Collection Data ◽  
Definition Of ◽  
First Time ◽  
Operational Aspects

Background: The emergence of “multi-omics” and “multi-parametric” types of analysis based on a high number of biospecimens enforces the use of a great number of high-quality “Biological Materials and Associated Data” (BMaD). To meet the demands of biomedical research, several Biological Resource Centers (BRCs) or Biobanks world-wide have implemented a specific Quality Management System (QMS) certified ISO 9001:2015 or accredited by CAP9 ISO 20387:2018. For the first time, ISO, with the support of several Biobanking experts, issued the ISO 20387:2018 which is the first ISO norm specific for Biobanks. The fundamental difference with present certification/accreditation standards is that the ISO 20387:2018 focuses not only on the operational aspects of the Biobank, but also on the “competence of the Biobank to carry our specific Biobanking tasks”. Methods: The accreditation process for ISO 20387:2018 required the definition of: (1) objectives, goals and organizational structure of the Biobank, including procedures for governance, confidentiality and impartiality policies; (2) standard operating procedures (SOPs) of all activities performed, including acquisition, analysis, collection, data management, distribution, preparation, preservation, testing facility and equipment maintenance, calibration, and monitoring; (3) procedures for control of documents and records, the identification of risks and opportunities, improvements, corrective actions, nonconforming records and evaluation of external providers (4) an internal audit and management reviews, verification of QMS performance, monitoring of quality objectives and personnel qualification and competency in carrying out specific Biobanking tasks. Results: The accreditation process is performed by an independent authorized organization which certifies that all processes are performed according to the QMS, and that the infrastructure is engineered and managed according to the GDP and/or GMP guidelines. Conclusion: Accreditation is given by an accreditation body, which recognizes formally that the Biobank is “competent to carry out specific Biobanking tasks”.

scholarly journals TreeMerge: a new method for improving the scalability of species tree estimation methods

2019 ◽  
Vol 35 (14) ◽  
pp. i417-i426 ◽  
Author(s):  
Erin K Molloy ◽  
Tandy Warnow
Keyword(s):  
Large Scale ◽  
Species Tree ◽  
New Method ◽  
Divide And Conquer ◽  
Supplementary Information ◽  
Estimation Methods ◽  
Running Time ◽  
Tree Estimation ◽  
Computationally Intensive ◽  
A Minor

Abstract Motivation At RECOMB-CG 2018, we presented NJMerge and showed that it could be used within a divide-and-conquer framework to scale computationally intensive methods for species tree estimation to larger datasets. However, NJMerge has two significant limitations: it can fail to return a tree and, when used within the proposed divide-and-conquer framework, has O(n5) running time for datasets with n species. Results Here we present a new method called ‘TreeMerge’ that improves on NJMerge in two ways: it is guaranteed to return a tree and it has dramatically faster running time within the same divide-and-conquer framework—only O(n2) time. We use a simulation study to evaluate TreeMerge in the context of multi-locus species tree estimation with two leading methods, ASTRAL-III and RAxML. We find that the divide-and-conquer framework using TreeMerge has a minor impact on species tree accuracy, dramatically reduces running time, and enables both ASTRAL-III and RAxML to complete on datasets (that they would otherwise fail on), when given 64 GB of memory and 48 h maximum running time. Thus, TreeMerge is a step toward a larger vision of enabling researchers with limited computational resources to perform large-scale species tree estimation, which we call Phylogenomics for All. Availability and implementation TreeMerge is publicly available on Github (http://github.com/ekmolloy/treemerge). Supplementary information Supplementary data are available at Bioinformatics online.

Improving the Volumetric Efficiency of the Axial Piston Pump

2012 ◽  
Vol 134 (11) ◽  
Author(s):  
Shu Wang
Keyword(s):  
Operating Conditions ◽  
Volumetric Efficiency ◽  
Valve Plate ◽  
Piston Pump ◽  
Efficient Design ◽  
Axial Piston Pumps ◽  
Definition Of ◽  
Engineering Practices ◽  
First Time ◽  
Axial Piston

The volumetric efficiency is one of the most important aspects of system performance in the design of axial piston pumps. From the standpoint of engineering practices, the geometric complexities of the valve plate (VP) and its multiple interactions with pump dynamics pose difficult obstacles for optimization of the design. This research uses the significant concept of pressure carryover to develop the mathematical relationship between the geometry of the valve plate and the volumetric efficiency of the piston pump. For the first time, the resulting expression presents the theoretical considerations of the fluid operating conditions, the efficiency of axial piston pumps, and the valve plate designs. New terminology, such as discrepancy of pressure carryover (DPC) and carryover cross-porting (CoCp), is introduced to explain the fundamental principles. The important results derived from this study can provide clear recommendations for the definition of the geometries required to achieve an efficient design, especially for the valve plate timings. The theoretical results are validated by simulations and experiments conducted by testing multiple valve plates under various operating conditions.

Updating the knowledge of the flower flies (Diptera: Syrphidae) from Chile: Illustrated catalog, extinction risk and biological notes

Zootaxa ◽  
2021 ◽  
Vol 4959 (1) ◽  
pp. 1-178
Author(s):  
RODRIGO M. BARAHONA-SEGOVIA ◽  
PAMELA RIERA ◽  
LAURA PAÑINAO-MONSÁLVEZ ◽  
VICENTE VALDÉS GUZMÁN ◽  
PATRICIA HENRÍQUEZ-PISKULICH
Keyword(s):  
Extinction Risk ◽  
Critical Role ◽  
Floral Biology ◽  
Iucn Red List ◽  
Decomposition Of Organic Matter ◽  
Management Plans ◽  
Flower Flies ◽  
Iucn Red List Criteria ◽  
Definition Of ◽  
First Time

Syrphidae, more commonly known as flower flies, are considered one of the most important Diptera families worldwide because of their critical role in pollination, biological control and decomposition of organic matter. The study of these flies in Chile has stagnated due to a lack of local experts as well as the absence of an updated catalog of species. This study is an attempt to remedy the latter of these issues by providing an illustrated and updated catalog to the Syrphidae of Chile. Species are presented under currently accepted names, with synonyms and previous combinations listed and original references. Type localities, world and Chilean distribution by geopolitical Chilean regions, taxonomic and biological notes, a complete record of bibliographic references and extinction risk under IUCN Red List criteria are provided. This catalog recognizes 132 species of Syrphidae, belonging to four subfamilies (Eristalinae, Microdontinae, Pipizinae and Syrphinae), 13 tribes and 47 genera. A total of 46 species (34.84 %) is restricted to the geopolitical territory of Chile. Eight species are considered exotic, one is considered incertae sedis and three are based on doubtful records. Seventeen species of 10 different genera (Copestylum Macquart, 1846; Dolichogyna Macquart, 1842; Eosalpingogaster Hull, 1949b; Eupeodes Osten Sacken, 1877; Meromacrus Rondani, 1848; Palpada Macquart, 1834; Paragus Latreille, 1804; Sphiximorpha Rondani, 1850; Sterphus Philippi, 1865 and Toxomerus Macquart, 1855) are reported from Chile for the first time. A total of 44 species (33.33 %) reported from Chile are directly threatened by human activities such as agriculture, forestry, mining and/or urbanization and indirectly by climate change. The gaps found in the geographic distribution of Chilean flower fly species and what it means for its use by disciplines such as ecology, floral biology and agronomy, are discussed. In addition, the use of this illustrated catalog for biological conservation, the potential definition of priority areas and ecosystem management plans based on this group of Diptera are also discussed. 

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