scholarly journals Notes on the Development of the Neural Crest in the Head of Mus musculus

Development ◽  
1953 ◽  
Vol 1 (4) ◽  
pp. 393-398
Author(s):  
Bengt Källén

The relations between the neural crest on the one hand and the neuromeres and their precursors the proneuromeres on the other hand have never been fully described. Many authors have, however, shown that the cranial ganglia lie level with every second neuromere, so that ganglion V lies level with neuromere VII, ganglion VII–VIII level with neuromere IX, and ganglion IX–X level with neuromere XI (Bergquist, 1952). The neuromeres develop in a rostro-caudal wave, which is preceded by a similar wave of proneuromeres—formations of approximately the same appearance but relatively larger (Källén & Lindskog, 1953). The first proneuromere directly corresponds to neuromeres I–II, the second to neuromeres III–IV, the third to neuromere V; and in the rhombencephalon each proneuromere also corresponds to two neuromeres.

Author(s):  
N. Cioica ◽  
C. Cota ◽  
Mihaela Nagy ◽  
G. Fodorean

Bioplastics constitute a great opportunity for agriculture, industry and environment. On the one hand, the basic raw material used to fabricate bioplastics is made from renewable agricultural materials, on the other hand, bioplastics have a wide application as packaging and protections in the food and non-food industry as catering products as protection films and foils and as compostable items in agriculture. Also very important is that after achieving the purpose for which they are produced, bioplastics become waste and their cycle is closed as they can be used as compost for agriculture.


2016 ◽  
Vol 24 (47) ◽  
Author(s):  
Stiegler Bernard

Stiegler argued in Cinematic Time and the Question of Malaise (the third volume of Technics and Time) that we must refer to archi-cinema just as Derrida spoke of archi-writing. In this article he proposes that in principle the dream is the primordial form of this archi-cinema. The archi-cinema of consciousness, of which dreams would be the matrix as archi-cinema of the unconscious, is the projection resulting from the play between what Husserl called, on the one hand, primary and secondary retentions, and what Stiegler, on the other hand, calls tertiary retentions, which are the hypomnesic traces (that is, the mnemo-technical traces) of conscious and unconscious life. There is archi-cinema to the extent that for any noetic act – for example, in an act of perception – consciousness projects its object. This projection is a montage, of which tertiary (hypomnesic) retentions form the fabric, as well as constituting both the supports and the cutting room. This indicates that archi-cinema has a history, a history conditioned by the history of tertiary retentions. It also means that there is an organology of dreams.


Paragrana ◽  
2015 ◽  
Vol 24 (2) ◽  
pp. 177-190
Author(s):  
Eva-Maria Engelen

AbstractThis study is guided by the idea that the totality of human self-relationships is dependent on a respective other, in order to be able to develop and in extreme cases sustain oneself. This is true even with regard to the phenomenal experience. On the one hand, it is determined how anthropological basic constellations are linked to relevant ethical questions of lifestyle and coping with existence, and, on the other hand, a lifestyle technique and ethical improvement are considered. Emotional and affective self-relationships in particular are examined to determine the phenomenal content of human self-relationships. In the first section, a model is presented on how inner life and thus a self is created in dialogical structures. In the second part, a traditional monologic technique is described as a dialogue with oneself, with whose help an inner life is further developed and unfolded. The third section shows how the effort towards self-preservation refers to dialogue scenarios.


Author(s):  
Tzvi Langermann

This chapter focuses on part II, Chapter 24 of Maimonides’ Guide of the Perplexed, which discusses the incompatibility of the models used by professional astronomers with the basic tenets of the Aristotelian world-view. On the one hand, the epicycles and eccentrics employed by astronomers seem to violate the principle that the motion of the heavenly bodies be uniform, circular, and about a fixed centre. On the other hand, the results achieved through the use of these very devices are startlingly precise. This, Maimonides says, is the ‘true perplexity’. The chapter then looks at three aspects of this true perplexity. It also compares the views expressed in the Guide with the rules laid down in the third chapter of the ‘Laws Concerning the Basic Principles of the Torah’, which forms the first section of the Mishneh Torah. It is particularly concerned with two questions: did Maimonides consider the true configuration of the heavens to be inscrutable? And can a close reading of both texts offer any clues about this true configuration? Finally, the chapter considers the views of some of Maimonides’ followers on these questions.


Augustinianum ◽  
2020 ◽  
Vol 60 (2) ◽  
pp. 379-397
Author(s):  
Christophe Guignard ◽  

Three major reshuffles delineate two families (α and β) within the manuscript tradition of the Commentary on Matthew by Hilary of Poitiers. In the first two cases (3, 2; 9, 7-9), J. Doignon in his critical edition (SCh 254 and 258) favored the text of the α family, judging that the β family generally attests to numerous revisions intended to suppress difficult lectiones. In the third case, on the other hand, he adopted the short text of the β family, thus demoting two short passages in 33, 5 specific to the α family. This article shows that on the one hand the language of these passages is attributable to Hilary and on the other their content fits perfectly with his exegesis. It thus argues for their authenticity.


2002 ◽  
Vol 96 (4) ◽  
pp. 866-867
Author(s):  
Robert Fatton

Political Legitimacy in Middle Africa is an insightful, refreshing, and original book that refines and expands our understanding of the so-called “politics of the belly.” A phrase made famous by Jean Francois Bayart (The State in Africa: The Politics of the Belly, 1993), the politics of the belly is the phenomenon of “eating” the fruits of power. The extent to which officeholders monopolize or share these fruits with the larger community has, however, significant consequences for their legitimacy. As Michael Schatzberg suggests, a “moral matrix of legitimate governance” (p. 35) embedded in familial and paternal metaphors shapes these belly politics. In turn, he argues that the moral matrix is rooted in four major premises. The first and second are related to the image of the ruler as a “fatherchief,” who has the obligation, on the one hand, to nurture and nourish his “family,” and on the other hand, to punish his “children” when necessary and pardon them when they truly repent. The third premise concerns the status of women in society; while they are not considered equal to men, rulers should, nonetheless, respect their role as “counselors and advisers.” The fourth premise “holds that permanent power is illegitimate and that political fathers…have to let their children grow up, mature, take on ever-increasing responsibilities in the conduct of their own affairs, and eventually succeed them in power” (p. 192).


2015 ◽  
Vol 7 (1) ◽  
pp. 3-30
Author(s):  
Noemi Gal-Or

Although the idea of r2p had been enshrined in the Constitutive Act of the African Union (au) shortly before the term was coined by the iciss, the au has been slow to live up to the commitment. Balancing r2p, on the one hand, with non-interference within the domaine reservé of the state, on the other hand, has proven an uphill battle. r2p sceptic member states have persistently opted for non-interference, and at most, a “non-indifference” approach representing a non-committal stance with regards to r2p. This paper offers reflections about the particular African construction of the third r2p “collective global” pillar, and explains the African reticence about the original iciss and 2005 World Summit Outcome versions of r2p. It expounds on the key reasons for this tempered reception and sheds light on the global governance security challenge as it plays out in the un-au politics of regional collaboration.


1987 ◽  
Vol 1 (3) ◽  
pp. 193-214 ◽  
Author(s):  
Lothar Laux ◽  
Hannelore Weber

In this concluding article we discuss the three approaches to biographical stress and coping research presented in this issue, under four main headings. The first topic comprises the comparison of the three approaches with regard to their biographical features. In a second part we turn to the issue of coping and examine differences as well as similarities between the coping concept of Hans Thomae, on the one hand and that of Lazarus and Folkman on the other hand. The third and fourth of our discussion points deal with two central topics, that are accentuated in present personality psychology: the person‐situation issue and the idiographic‐nomothetic debate. With regard to both topics, we discuss the ideas and research findings which Lazarus and Folkman, as well as Thomae are contributing to these issues. We conclude our discussion of biographical approaches to stress and coping by proposing a person‐centred approach, that can be regarded as a further development of theoretical conceptualizations contained in the approaches of Lazarus and Thomae.


This paper, which forms the sequel to the one on the same subject which was read at the preceding meeting, continues the inquiry into the combinations of phosphoric acid with different bases, and more particularly with soda. The crystallized salt of phosphate of soda was found to contain 37·1 of the phosphate, and 62·9 of water. so that the author infers its composition to be three atoms base, namely, two of soda and one of water. The pyrophosphate of soda, on the other hand, contains only two atoms soda as base, and gives accordingly bibasic precipitates. The biphosphate of soda was found to admit of so great a number of changes in its composition and properties, as to render it an object of great interest. Of the four atoms of water which the crystals contain, they lose two atoms at the temperature of 212°, and not a particle more till the heat is raised to about 375°. There is every reason to believe that the two atoms of water retained are essential to the constitution of the biphosphate of soda; and that it contains three atoms of base, namely, one atom soda to two atoms water, united to a double atom of phosphoric acid. Other varieties of this salt are also met with; the first of which may be called a bipyrophosphate, containing only one atom of basic water; the second being anhydrous, though soluble in water, and neutral in its reaction on litmus, but of which the exact composition is not well determined; the third being an insoluble variety ; and a fourth being a metaphosphate of soda,—the author designating, by the term Metaphosphoric acid, a peculiar hypothetical state of composition of the elements of phosphoric acid in conjunction with water. This new acid enters into combination with barytes and with lime, forming with these bases other metaphosphates. The author concludes by a general review of the several modifications of phosphoric acid which have resulted from these inquiries.


Film Studies ◽  
2004 ◽  
Vol 5 (1) ◽  
pp. 106-131
Author(s):  
Christopher Wintle ◽  
Hans Keller

Among the musical Hitler Émigrés from Vienna to London, pride of place has often been accorded to Hans Keller, a psychologically-minded critic (or, as he described himself, ‘anti-critic’) who dominated the British musical scene for the 40 years that followed 1945. In the period 1946-1959 he devoted himself assiduously to film music, on the one hand laying out the topics that a ‘competent film music critic’ would need to address, and on the other paying scrupulous attention to everything he saw and heard. He shared with Theodor Adorno a loathing of Hollywood, and championed British composers above most others. This selection comes in advance of the publication of his collected writings on film, Film Music and Beyond (London, Plumbago, 2005), and shows on the one hand his topical writings, dealing with the importance of actually listening to film-music, ‘noise as leitmotif’, the contribution of psychology to understanding the function of film music, and classical quotations in film, and on the other hand his writing on composers, including Arthur Benjamin, Georges Auric, William Alwyn, Leonard,Bernstein (On the Waterfront) and Anton Karas (The Third Man).


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