Nematode systematics: past, present and future

Nematology ◽  
2000 ◽  
Vol 2 (1) ◽  
pp. 3-7 ◽  
Author(s):  
August Coomans
Keyword(s):  
20Th Century ◽  
19Th Century ◽  
Phylogenetic Relationships ◽  
Molecular Techniques ◽  
Basic Knowledge ◽  
Phylogenetic Systematics ◽  
Morphological Approach ◽  
The Sixties ◽  
Funding Opportunities ◽  
The 19Th Century

AbstractA brief overview is given of nematode taxonomy since its beginnings in the second half of the 19th century. Most of the work concerned α-taxonomy, but in the thirties and subsequently from the sixties several classifications have been proposed. Since the eighties phylogenetic systematics was introduced as the underlying theory. Due to the pioneering work of several famous nematode taxonomists in the first half of the 20th century an increased interest for the discipline arose. Very unfortunately, this interest decreased in more recent times to an alarming extent. The difficulty to correctly identify and to describe the rapidly increasing numbers of taxa has discouraged many young scientists and diverted them toward more appealing disciplines. Taxonomy provides nevertheless the basic knowledge for studies on biodiversity as well as for analyses of ecological and phylogenetic relationships. Molecular techniques have made systematics again exciting; when combined with the more traditional morphological approach, they will lead to new insights. Hopefully, these will arouse the interest of young scientists. Even then the future of nematode taxonomy will depend on the funding opportunities provided by national and international authorities. La systématique des nématodes est brièvement revue depuis ses origines dans la seconde moitié du 19ème siècle. La plupart des travaux sont relatifs l’ α-taxinomie, mais dans les années trente et ensuite dans les années soixante, plusieurs classifications ont été proposées. Depuis les années 80, la systématique phylogénétique a été introduite comme la théorie sous-jacente. Grâce au travail de pionnier de plusieurs taxinomistes célèbres dans la première moitié du 20ème siècle, un intérêt accru est apparu pour la discipline. Très malheureusement, cet intérêt a décru récemment jusqu’à un niveau alarmant. La difficulté d’identifier correctement et de décrire un nombre de taxons augmentant rapidement a découragé de nombreux jeunes scientifiques et les a poussé vers des disciplines plus attirantes. La taxinomie cependant apporte la connaissance de base tant pour des études de biodiversité que pour des études de relations écologiques et phylogénétiques. Les techniques moléculaires ont rendu la systématique à nouveau attractive; lorsqu’elles seront combinées avec l’approche morphologique plus traditionnelle, elles conduiront à de nouveaux développements. Heureusement, elles vont réveiller l’intérêt des jeunes chercheurs. Malgré cela, le futur de la taxinomie des nématodes dépendra des opportunités de financement par les autorités nationales et internationales.

Immigrant Arab Women in Chile during the Renaissance (Nahda), 1910s-1920s

1970 ◽  
pp. 47-55
Author(s):  
Sarah Limorté
Keyword(s):  
20Th Century ◽  
19Th Century ◽  
Thematic Analysis ◽  
New World ◽  
Arab Women ◽  
Arab Woman ◽  
The Subject ◽  
The 19Th Century

Levantine immigration to Chile started during the last quarter of the 19th century. This immigration, almost exclusively male at the outset, changed at the beginning of the 20th century when women started following their fathers, brothers, and husbands to the New World. Defining the role and status of the Arab woman within her community in Chile has never before been tackled in a detailed study. This article attempts to broach the subject by looking at Arabic newspapers published in Chile between 1912 and the end of the 1920s. A thematic analysis of articles dealing with the question of women or written by women, appearing in publications such as Al-Murshid, Asch-Schabibat, Al-Watan, and Oriente, will be discussed.

THE DEVELOPMENT OF AMERICAN SHIP-ACCOUNTING PRACTICES TO 1900: A COMPARATIVE STUDY OF THREE VESSELS

1999 ◽  
Vol 26 (1) ◽  
pp. 27-51
Author(s):  
Jan Richard Heier
Keyword(s):  
Comparative Study ◽  
Environmental Change ◽  
20Th Century ◽  
19Th Century ◽  
Business Environment ◽  
Accounting Model ◽  
Types Of Information ◽  
The 19Th Century ◽  
The U.S

Accounting has always been utilitarian in nature. It adapts to the changes in the business environment by meeting the need for new types of information. The change in waterborne transportation in the U.S. during the 19th century provides an example of such an environmental change that led to a need for accounting adaptation. With the advent of the steamboat, old accounting methods were modified and new ones created to meet the changes in the business environment. In the process, a standardized ships-accounting model was developed. The model can be seen in the accounting records of three ships that sailed at the beginning of the 20th century.

scholarly journals Catalogue of the primatological collection of the Torino University

2016 ◽  
Vol 3 (2) ◽  
pp. 3 ◽  
Author(s):  
Mara Calvini ◽  
Maria Stella Siori ◽  
Spartaco Gippoliti ◽  
Marco Pavia
Keyword(s):  
20Th Century ◽  
19Th Century ◽  
Great Part ◽  
Type Specimen ◽  
Zoological Garden ◽  
Historical Material ◽  
The 19Th Century ◽  
First Time

The revised catalogue of primatological material stored in the Museo Regionale di Scienze Naturali of Torino and in the Dipartimento di Scienze della Vita e Biologia dei Sistemi of the Università degli Studi di Torino and belonging to the historical material of the Torino University is introduced. The material, 494 specimens belonging to 399 individuals of 122 taxa, is of particular importance since specimens were mainly obtained during the 19th Century and the beginning of the 20th Century. A relevant part of the collection was created by the collaborators of the Museum, among which it is worth to mention F. De Filippi, A. Borelli and E. Festa, while other material came from purchases and donations from private people or the Royal Zoological Garden of Torino. Great part of the specimens is stuffed but also the osteological materials are of particular importance, as many of them derived from the specimens before being prepared and consisting of skulls or more or less complete skeletons. After this revision, the Lectotype and Paralectotypes of <em>Alouatta</em> <em>palliata</em> <em>aequatorialis</em> have been selected, and the type-specimen of the <em>brunnea</em> variety of <em>Cebus</em> <em>albifrons</em> <em>cuscinus</em> has been recognized. In addition, some specimens of particular historical-scientific importance have also been identified and here presented for the first time.

scholarly journals Most Frequent Problems of Building Structures of Urban Apartment Buildings from 2nd Half of 19th Century and the Start of 20th Century

Buildings ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 27
Author(s):  
Klara Kroftova
Keyword(s):  
20Th Century ◽  
19Th Century ◽  
Residential Building ◽  
Structural Safety ◽  
Horizontal Load ◽  
Building Structures ◽  
Speed Up ◽  
The 19Th Century ◽  
Basic Prerequisite

An urban residential building from the second half of the 19th century and the start of the 20th century, the so-called tenement house, is a significant representative of the architecture of the developing urban fabric in Central Europe. The vertical and horizontal load-bearing structures of these houses currently tend to show characteristic, repeated defects and failures. Their knowledge may, in many cases, facilitate and speed up the design of the historic building’s restoration without compromising its heritage value in this process. The article presents the summary of the most frequently occurring defects and failures of these buildings. The summary, however, is not an absolute one, and, in the case of major damage to the building, it still applies that, first of all, a detailed analysis of the causes and consequences of defects and failures must be made as a basic prerequisite for the reliability and long-term durability of the building’s restoration and rehabilitation. An integral part of the rehabilitation of buildings must be the elimination of the causes of the appearance of their failures and remediation of all defects impairing their structural safety, health safety and energy efficiency.

The origins of syncopation in American popular music

Popular Music ◽  
2021 ◽  
Vol 40 (1) ◽  
pp. 18-41
Author(s):  
David Temperley
Keyword(s):  
African American ◽  
Popular Music ◽  
20Th Century ◽  
19Th Century ◽  
Vocal Music ◽  
Piano Music ◽  
Historical Process ◽  
American Popular Music ◽  
The 19Th Century ◽  
Fourth Position

AbstractThe origins of syncopation in 20th-century American popular music have been a source of controversy. I offer a new account of this historical process. I distinguish between second-position syncopation, an accent on the second quarter of a half-note or quarter-note unit, and fourth-position syncopation, an accent on the fourth quarter of such a unit. Unlike second-position syncopation, fourth-position syncopation tends to have an anticipatory character. In an earlier study I presented evidence suggesting British roots for second-position syncopation. in contrast, fourth-position syncopation – the focus of the current study – seems to have had no presence in published 19th-century vocal music, British or American. It first appears in notation in ragtime songs and piano music at the very end of the 19th century; it was also used in recordings by African-American singers before it was widely notated.

Zum Aufstieg und Niedergang des Normalarbeitsverhältnisses in Deutschland 1800-2010 - ein Forschungsprojekt

2009 ◽  
Vol 50 (2) ◽  
Author(s):  
Toni Pierenkemper ◽  
Klaus F. Zimmermann
Keyword(s):  
Welfare State ◽  
20Th Century ◽  
19Th Century ◽  
Working Hours ◽  
Modern Concept ◽  
Employment Contract ◽  
Unemployment Rates ◽  
The Future ◽  
The 19Th Century ◽  
The Welfare State

AbstractThis paper attempts to trace the construction of the standard employment contract in Germany from the beginning of the 19th century onwards. In 20th century Germany, it was reinforced alongside with the consolidation of the welfare state and developed into the modern concept of the standard employment contract. Due to globalization forces and dynamics of capitalist market economies, the standard employment contract has turned into an obstacle in the way of modern economy’s progress. The future might be determined by increasing work flexibility, rising working hours, falling income and increasing unemployment rates, rendering the standard employment contract anachronistic and obsolete.

Politieke statistiek in België : Oproep bij het einde van 170 jaar België

Res Publica ◽  
2000 ◽  
Vol 42 (2-3) ◽  
pp. 379-389
Author(s):  
Wilfried Dewachter
Keyword(s):  
20Th Century ◽  
19Th Century ◽  
Statistical Data ◽  
Depth Information ◽  
Global Approach ◽  
Institutional Approach ◽  
Static View ◽  
The Right ◽  
The 19Th Century

The great promises that "Statistik" yielded in the 19th century in Belgium, did  not materialise. At least as far as political statistics are concerned. In the second half of the 20th century the output was rather limited and thus very incomplete, not very professionally conceived and elaborated, disorderly provided, strongly related to an outrunned institutional approach and thus quite conservative in its orientation, veiled in inaccurate categories with the static view rather dominant. Therefore, starting from a global approach of the 3 P's (=polity, politics and policy), a rebuilding is necessary. This should provide for an inventory of existing statistical data and -above all -a masterplan to achieve a straightforward view on the 3 P's in Belgium: polity, politics and policy. A polyarchy has the right and the need to in depth information that is as complete as feasible. Statistics are very handy tools to provide this information to both policymakers and citizens.

Kazania dla młodzieży żydowskiej w Galicji

2021 ◽  
Author(s):  
Alicja Maślak-Maciejewska
Keyword(s):  
Secondary Schools ◽  
Religious Education ◽  
20Th Century ◽  
19Th Century ◽  
Jewish Students ◽  
Jewish Youth ◽  
The 19Th Century ◽  
Selection Of

The book contains a selection of eighty eight sermons (so-called exhortations) for the Jewish youth, which were written in Galicia at the end of the 19th century and in the first decades of the 20th century. They constituted part of religious education of Jewish students who attended secular primary and secondary schools. The authors of the sermons were teachers such as Natan Szyper, Arnold Friedman or Samuel Wolf Guttman who was the preacher of the progressive synagogue in Lviv.

Origine et diffusion des expressions romanes du type jaune paille

2021 ◽  
Vol 133 (1) ◽  
pp. 3-27
Author(s):  
Sara Matrisciano ◽  
Franz Rainer
Keyword(s):  
20Th Century ◽  
19Th Century ◽  
18Th Century ◽  
17Th Century ◽  
16Th Century ◽  
Romance Languages ◽  
Short Discussion ◽  
Colour Term ◽  
The 19Th Century ◽  
And Diffusion

All major Romance languages have patterns of the type jaune paille for expressing shades of colour represented by some prototypical object. The first constituent of this pattern is a colour term, while the second one designates a prototypical representative of the colour shade. The present paper starts with a short discussion of the controversial grammatical status of this pattern and its constituents. Its main aim, however, concerns the origin and diffusion of this pattern. We have not found hard and fast evidence that Medieval Italian pigment compounds of the type verderame influenced the rise of the jaune paille pattern, which first appears in French in the 16th century. This pattern continued to be a minority solution during the 17th century, but established itself during the 18th century. In the 19th century, Italian, Spanish and Portuguese adopted the pattern jaune paille, while it did not reach Catalan and Romanian before the 20th century.

scholarly journals Some notes on a historical perspective of panic disorder

2006 ◽  
Vol 55 (2) ◽  
pp. 154-160 ◽  
Author(s):  
Antonio Egidio Nardi
Keyword(s):  
Panic Disorder ◽  
20Th Century ◽  
19Th Century ◽  
Greek Mythology ◽  
Laboratory Studies ◽  
Biochemical Tests ◽  
Wide Range ◽  
Therapeutic Development ◽  
History Of ◽  
The 19Th Century

This article aims to describe important points in the history of panic disorder concept, as well as to highlight the importance of its diagnosis for clinical and research developments. Panic disorder has been described in several literary reports and folklore. One of the oldest examples lies in Greek mythology - the god Pan, responsible for the term panic. The first half of the 19th century witnessed the culmination of medical approach. During the second half of the 19th century came the psychological approach of anxiety. The 20th century associated panic disorder to hereditary, organic and psychological factors, dividing anxiety into simple and phobic anxious states. Therapeutic development was also observed in psychopharmacological and psychotherapeutic fields. Official classifications began to include panic disorder as a category since the third edition of the American Classification Manual (1980). Some biological theories dealing with etiology were widely discussed during the last decades of the 20th century. They were based on laboratory studies of physiological, cognitive and biochemical tests, as the false suffocation alarm theory and the fear network. Such theories were important in creating new diagnostic paradigms to modern psychiatry. That suggests the need to consider a wide range of historical variables to understand how particular features for panic disorder diagnosis have been developed and how treatment has emerged.

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