The Activities of the Tube Feet of Asterias Rubens L

1947 ◽  
Vol s3-88 (1) ◽  
pp. 1-14
Author(s):  
J. E. SMITH
Keyword(s):  
Forward Direction ◽  
The Other ◽  
Asterias Rubens ◽  
Ideal Form ◽  
First Time ◽  
Intrinsic Musculature ◽  
Tube Feet ◽  
Postural Muscles ◽  
The Ideal

1. An account is given of the muscular anatomy of the foot and ampulla of Asterias rubens. An intrinsic musculature of the sucker figured by Cuénot (1891) and Chadwick (1923) is shown not to be present; on the other hand, postural muscles responsible for orientating the podium, levator fibres which ‘cup’ the sucker, and radial fibres which flatten it are described and figured for the first time. 2. The role of the different muscle systems, the collagen connective tissue, and the fluid of the hydrocoel in protracting and retracting the foot, and in effecting the attachment and detachment of the sucker, is discussed. 3. Evidence is presented, to show that postural pointing of the foot is brought about by the contraction of a ring of muscles encircling the base of the podium. The orienting muscles are functionally, but not anatomically, distinct from the longitudinal fibres of the retractor sheath. 4. The ambulatory step is shown to comprise a series of linked phases of static posture and of movement. Each phase is characterized by the contraction of one member of each of the two opposing pairs of muscles engaged in the development of the step. The two pairs of muscles are (1) the anterior and posterior orienting fibres, and (2) the protractors and retractors of the foot. In its ideal form the step comprises four phases of static posture alternating with four movements. Each movement is ushered in by a reversal of the contraction-relaxation relationships of one of the two pairs of opposing muscle systems. Four such changes are possible and they occur in a sequence that ensures the orderly succession of the four movements of protraction, swing back, retraction, and swing forward, of which movements the idealized stepping cycle is composed. 5. The actual locomotory step departs from the ideal form in two respects: (1) it is liable to become disrupted by a delay in the initiation of the protraction or of the backswing movement, and (2) withdrawal of the podium occurs simultaneously with its re-orientation in the forward direction. It is pointed out that these variations are explicable on the assumption that, in the two series of opposing muscle pairs, the retractor fibres are more readily excited to contract than are their antagonists, and the anterior postural muscles than the posterior postural fibres.

scholarly journals Co-experiencing psychotherapy as the theoretical basis of adolescent communicative competence development technique

2017 ◽  
Vol 25 (4) ◽  
pp. 147-155 ◽  
Author(s):  
A.A. Maslova
Keyword(s):  
Computer Program ◽  
Theoretical Basis ◽  
Communicative Competence ◽  
Competence Development ◽  
The Other ◽  
Internet Resources ◽  
Ideal Form ◽  
The Creation ◽  
The Ideal

The article deals with the approach to the creation of a computer program for the development of adolescents’ communicative competence — the so-called «virtual interlocutor», which is the Other in terms of the dialogism of M.M. Bakhtin, and the intermediator, which mediates the introduction of a teenager to what may be called the ideal form of communicative culture in terms of cultural-historical psychology. The content of the toolkit is composed of communicative tasks and feedback, which is generated based on the principles of the co-experiencing psychotherapy developed by F.E. Vasilyuk. It’s concluded that the approach is relevant and promising considering the increasing role of Internet resources in the life of modern adolescents. The developed resource will contribute to the solution of problems related to the development of communication, the leading activity in adolescence, the success of which is caused primarily by the level of communicative competence development.

KONSTRUKSI ISLAM DALAM KEKUASAAN NEGARA

1970 ◽  
Vol 6 (2) ◽  
Author(s):  
Nurul Aini Musyarofah
Keyword(s):  
Islamic Law ◽  
Social Condition ◽  
The Other ◽  
Good Society ◽  
Ideal Form ◽  
Other Hand ◽  
Islamic Politics ◽  
The Relationship ◽  
The Ideal

The relationship between Islam and state raises a controversy that includes two main groups;formalists and substantialists. Both of them intend to achieve a good social condition which is inaccordance with Islamic politics. The ideal form of good society to be achieved is principallydescribed in the main source of Islamic law, Al Qur’an and As Sunnah, as follows. A form of goodsociety should supprot equality and justice, egalitarianism, and democracy in its social community.The next problem is what the needed methods and instruments to achieve the ideal Islamic politicsare. In this case, the debate on the formalization and substance of Islamic teaching is related to therunning formal political institution.Each group claims itself to be the most representative to the ideal Islam that often leads to anescalating conflict. On the other hand thr arguments of both groups does not reach the wholeMuslims. As a result, the discourse of Islam and state seems to be elitist and political. As a result,Both groups suspect each other each other and try to utilize the controversy on the relationshipbetween Islam and state to get their own benefit which has no relation with the actualization ofIslamic teaching.

Comments on the updated recommendations of the American College of Rheumatology (ACR) for the treatment of gout. Lifestyle (part 2)

2021 ◽  
Vol 15 (2) ◽  
pp. 83-88
Author(s):  
M. S. Eliseev
Keyword(s):  
Body Weight ◽  
Food Habits ◽  
The Other ◽  
Obese Patients ◽  
American College Of Rheumatology ◽  
The Russian Federation ◽  
The One ◽  
Effective Drugs ◽  
First Time

Updated ACR recommendations for the treatment of gout concerning lifestyle are discussed. Factors related to a lifestyle, above all food habits, for many years were of leading importance in the treatment of patients with gout, even after application of effective drugs. The authors of the updated ACR recommendations for the first time offered to reconsider the role of environmental factors in the genesis of gout and objectively assess the possibility of its non-drug treatment. On the one hand, regardless of the activity of the disease, the need for restrictions of the alcohol, purine-rich products and fructose-containing beverages, as well as the decrease of body weight in obese patients and vitamin C usage unviability are confirmed. On the other hand, these recommendations are conditional. Their new version of ACR recommendations is significantly different from both its previous version and other international and national recommendations, including recommendations on the diagnosis and treatment of gout used in the Russian Federation.

Franciscan Books and their Readers

2022 ◽  
Author(s):  
René Hernández
Keyword(s):  
Space Form ◽  
Northern Italy ◽  
Ideal Space ◽  
Skilled Readers ◽  
Personal Library ◽  
Key Aspects ◽  
Cultural Agency ◽  
First Time ◽  
The Ideal

The book explores the manuscripts written, read, and studied by Franciscan friars from the thirteenth to the fifteenth centuries in Northern Italy, and specifically Padua, assessing four key aspects: ideal, space, form and readership. The ideal is studied through the regulations that determined what manuscripts should aim for. Space refers to the development and role of Franciscan libraries. The form is revealed by the assessment of the physical configuration of a set of representative manuscripts read, written, and manufactured by the friars. Finally, the study of the readership shows how Franciscans were skilled readers who employed certain forms of the manuscript as a portable, personal library, and as a tool for learning and pastoral care. By comparing the book collections of Padua’s reformed and unreformed medieval Franciscan libraries for the first time, this study reveals new features of the ground-breaking cultural agency of medieval friars.

scholarly journals The Figure of Distrust: Prince A.S. Menshikov in the Maritime Department during the Period of Reforms, 1826–1828

2020 ◽  
Vol 4 (3) ◽  
pp. 702-733
Author(s):  
Kseniya V. Donik
Keyword(s):  
Methodological Approach ◽  
The Other ◽  
General Situation ◽  
Functional Characteristics ◽  
Problem Context ◽  
Agent Based ◽  
The One ◽  
First Time ◽  
Official Records

The article considers the role of Prince A. Menshikov as a specific type of agent of supreme authority in the process of reforming the maritime administration. The problem context of reforms resulted from the involvement of the naval generals and officials in abuses, which was a consequence of nepotism and unrest in the navy. The involvement of sailors in the Decembrist revolt significantly affected the attitude of the tsar to the general situation in the naval environment. Distrustful of the existing naval administration, Nicholas I needed an intermediary who would implement his idea of the arrangement of the navy on the one hand, and provide him with an objective “impartial” account of maritime problems, on the other hand. As a result of that, Adjutant General Prince A. Menshikov, who had had nothing to do with the naval service earlier, joined the navy to become the monarch’s agent in charge of the naval issues in the bodies of autocratic authority. The objective of the article is to identify the functions of such an agent based on the example of the Maritime Department. The sources of the article include official records and personal documents, some of which are introduced into scientific circulation for the first time. The principal methodological approach to the problem under study is an attempt to bring the appointment of Menshikov beyond the scope of narrow departmental history which was based on the unmotivated decision of the emperor and to propose an interpretation of the events in the context of tsarist government via agents, which has already been described in historiography. The author makes a conclusion about the interconnection between the crisis in the naval department, the attitude of the supreme authority towards it, and the appearance of the monarch’s agent with a number of his own functional characteristics.

scholarly journals van der Waals Interactions and Hadron Resonance Gas: Role of resonance widths modeling on conserved charges fluctuations

2018 ◽  
Vol 171 ◽  
pp. 14006
Author(s):  
Volodymyr Vovchenko ◽  
Paolo Alba ◽  
Mark I. Gorenstein ◽  
Horst Stoecker
Keyword(s):  
Lattice Qcd ◽  
Temperature Region ◽  
Van Der Waals ◽  
Baryon Number ◽  
The Other ◽  
Van Der Waals Interactions ◽  
Crossover Temperature ◽  
Lattice Data ◽  
The Ideal

The quantum van der Waals (QvdW) extension of the ideal hadron resonance gas (HRG) model which includes the attractive and repulsive interactions between baryons – the QvdW-HRG model – is applied to study the behavior of the baryon number related susceptibilities in the crossover temperature region. Inclusion of the QvdW interactions leads to a qualitatively different behavior of susceptibilities, in many cases resembling lattice QCD simulations. It is shown that for some observables, in particular for χBQ11/χB2, effects of the QvdW interactions essentially cancel out. It is found that the inclusion of the finite resonance widths leads to an improved description of χB2, but it also leads to a worse description of χBQ11/χB2, as compared to the lattice data. On the other hand, inclusion of the extra, unconfirmed baryons into the hadron list leads to a simultaneous improvement in the description of both observables.

scholarly journals Late Paleogene herpetofaunas from the crossroads between two continents – new amphibian and reptile remains from the Oligocene of southern Balkans and Anatolia

2021 ◽  
Author(s):  
Georgios L. GEORGALIS ◽  
Andrej ČERŇANSKÝ ◽  
undefined Serdar MAYDA
Keyword(s):  
Eastern Europe ◽  
Central Europe ◽  
The Other ◽  
Southeastern Europe ◽  
Dispersal Route ◽  
First Time ◽  
Southern Balkans

We describe here new amphibian and reptile remains from three Oligocene localities of Turkey. Two of the localities (Kavakdere and Kocayarma) are situated in southeastern Europe and the other one (Kargi 2) in Anatolia, both areas where Oligocene herpetofauna is practically almost unknown. The material consists of albanerpetontids, pelobatid anurans, turtles, crocodylians, lacertids, scinciformatans, anguines, and “tropidophiids”. Albanerpetontids are for the first time identified in southeastern Europe, with the material being reminiscent of the younger species Albanerpeton inexpectatum Estes & Hoffstetter, 1976; the material potentially represents the oldest record of that species. Pelobatids, scinciformatans, and “tropidophiids” represent the oldest occurrences of these clades in the northeastern Mediterranean. The anguine genus Ophisaurus Daudin, 1803 is identified for the first time in the Paleogene of Eastern Europe. The “tropidophiids” are referred to two genera, Falseryx Szyndlar & Rage, 2003 and tentatively also to Platyspondylia Rage, 1974, with the latter having been so far exclusively known from western and central Europe. The role of a potential southern dispersal route of taxa among Asia and Europe, involving the area of southern Balkans and Anatolia, similarly to what has been recently demonstrated for mammals, is highlighted also for amphibians and reptiles.

scholarly journals Effects of Activating Background Knowledge in Listening Skill and How to Improve IELTS Listening

2021 ◽  
Vol 3 (6) ◽  
pp. 13-25
Author(s):  
Nguyen Nu Nhu Linh
Keyword(s):  
Learning Styles ◽  
Background Knowledge ◽  
The Other ◽  
Efl Learners ◽  
Listening Skill ◽  
The World ◽  
Efl Students ◽  
First Time ◽  
International English

Among the well-known international English tests, IELTS has been seen as one of the most well-trusted and popular to EFL learners throughout the world. In Vietnam, most of the universities require their EFL students to have an IELTS score of 6.5 or 7.0 to fulfil their bachelor degree program, which is not quite an easy job. The paper emphasizes the role of background knowledge in improving IELTS Listening scores for EFL students at Saigon University. The research was done by observing two groups of students learning Listening Module 3 at the institution. They were required to do the same test; however, while a group was constructed with pre-listening activities, the other simply listened and completed the task without preparation. The result showed little difference between the two groups in terms of efficiency, but most of the students in the first group were able to complete their test in the first time listening while some members of the latter group needed a second time. They were then required to complete a survey, including learning styles and attitudes. The results also tell us that EFL students pay much attention to pre-listening activities, and they believe such tasks can help them do their listening test better.

scholarly journals Evolution of Lyrical Image in Ballets of Azerbaijani Composers

2021 ◽  
Vol 4 (2) ◽  
pp. 179-187
Author(s):  
Lala Huseynli
Keyword(s):  
Cultural Context ◽  
The Other ◽  
Musical Culture ◽  
Specific Content ◽  
Historical Approach ◽  
Historical Method ◽  
Other Hand ◽  
History Of ◽  
First Time

This article is devoted to the study of the evolution of the lyrical image in the ballets of Azerbaijani composers. The presented article emphasizes that the Azerbaijani ballet on the extension of the history of the Azerbaijani school of composition functioned indefinitely as an important component of the Azerbaijani musical culture. The theme of this article is actualized in the aspect of the historical approach, as each ballet of Azerbaijani composers, on the other hand, reflected the significant features of the artistic, historical and cultural context. On the other hand, the study of the evolution of the lyrical image in the Azerbaijani ballets reflects the dynamics of the development of the Azerbaijani school of composition. Moreover, the figurative system in Azerbaijani ballets represents the slender line of artistic connections of Azerbaijani culture. The purpose of the research is to study the role of the lyrical image in the evolution of the Azerbaijani ballet. The research methodology is based is based on the use of a historical approach to determine the basic definitions of the study. The expediency of the historical method is due to the fact that the development in the space of historical time should be based on certain basic categories that would reflect the school of composition, its national specifics. The scientific novelty of the research is that for the first time the peculiarities of the evolution of the lyrical image in Azerbaijani ballets – from its origin to modern functioning – are analyzed; the nuances of style creation in the Azerbaijani school of composers in the specified aspect are considered, and also certain art processes are systematized. Conclusions. It is proved that the combination of deep lyricism with dramatic emotions is characteristic of the transfer of lyricism in the drama of ballets at all historical stages of development, in different stylistic contexts. Lyrical images in the ballets of Azerbaijani composers have similar features and are due to the specific content of the national worldview.

scholarly journals Evolutionarily ancient role of cholecystokinin-type neuropeptide signalling as an inhibitory regulator of feeding-related processes revealed in an echinoderm

2020 ◽  
Author(s):  
Ana B. Tinoco ◽  
Antón Barreiro-Iglesias ◽  
Luis Alfonso Yañez-Guerra ◽  
Jérôme Delroisse ◽  
Ya Zhang ◽  
...  
Keyword(s):  
Body Wall ◽  
Oral Feeding ◽  
Cardiac Stomach ◽  
First Time ◽  
Dose Dependent ◽  
Type Receptor ◽  
Tube Feet

AbstractCholecystokinin (CCK) / sulfakinin (SK)-type neuropeptides regulate feeding and digestion in chordates and protostomes (e.g. insects). Here we characterised CCK/SK-type signalling for the first time in a non-chordate deuterostome - the starfish Asterias rubens (phylum Echinodermata). In this species, two neuropeptides (ArCCK1, ArCCK2) derived from the precursor protein ArCCKP act as ligands for a CCK/SK-type receptor (ArCCKR) and are expressed in the nervous system, digestive system, tube feet and body wall. Furthermore, ArCCK1 and ArCCK2 cause dose-dependent contraction of cardiac stomach, tube foot and body wall apical muscle preparations in vitro and injection of these neuropeptides in vivo triggers cardiac stomach retraction and inhibition of the onset of feeding in A. rubens. Thus, an evolutionarily ancient role of CCK/SK-type neuropeptides as inhibitory regulators of feeding-related processes in the Bilateria has been conserved in the unusual and unique context of the extra-oral feeding behaviour and pentaradial body plan of an echinoderm.

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