The gaseous oxidation of tertiary aliphatic amines. III. N -methyl diethylamine and N -ethyl dimethylamine

A comparative study of the gaseous oxidation of N - methyl diethylamine and N -ethyl dimethylamine shows that the former compound closely resembles triethylamine in its general behaviour, while the latter compound exhibits a striking similarity to trimethylamine. With both the mixed tertiary amines a reaction occurs which leads to the formation of secondary amine, but which rapidly becomes self-inhibited as oxidation proceeds. Only with N -methyl dimethylamine, however, are substantial amounts of primary amine formed among the products of slow combustion. A possible explanation of this last difference is that only peroxy-radicals derived from tertiary amines containing at least two ethyl groups can, on steric grounds, readily undergo intramolecular attack to yield monoalkylamines. The apparent ease of such a reaction during the oxidation of N -methyl diethylamine and triethylamine may thus account for the marked contrast between the behaviour of these two compounds on the one hand and that of N -ethyl dimethylamine and trimethylamine on the other.

2010 ◽  
Vol 1 (3) ◽  
pp. 336-361 ◽  
Author(s):  
Ophir Münz-Manor

The article presents a contemporary view of the study of piyyut, demonstrating that Jewish poetry of late antiquity (in Hebrew and Aramaic) was closely related to Christian liturgical poetry (both Syriac and Greek) and Samaritan liturgy. These relations were expressed primarily by common poetic and prosodic characteristics, derived on the one hand from ancient Semitic poetry (mainly biblical poetry), and on the other from innovations of the period. The significant connections of content between the different genres of poetry reveal the importance of comparative study. Thus the poetry composed in late antiquity provides additional evidence for the lively cultural dialogue that took place at that time.


2020 ◽  
pp. 292-344
Author(s):  
Vuk Vukotić

This article compares the language ideologies of language experts (both academic and non-academic) in online news media in Lithuania, Norway and Serbia. The results will reveal that language is understood in diametrically opposed ways amongst Lithuanian and Serbian academic experts on the one, and Norwegian academic experts on the other hand. Lithuanian and Serbian academic experts are influenced by modernist ideas of language as a single, homogenous entity, whose borders ideally match the borders of an ethnic group. Norwegian academic experts function in the public sphere as those who try to deconstruct the modernist notion of language by employing an understanding of language as a cognitive tool that performs communicative and other functions. On the other hand, non-academic experts in all the three countries exhibit a striking similarity in their language ideologies, as the great majority expresses modernist ideals of language.


Author(s):  
José Teodoro Garfella ◽  
María Jesús Máñez ◽  
Joaquín Ángel Martínez

Today there are many publications or papers related with several graphic surveys of architectural heritage carried out using a variety of both traditional and cutting edge methods. Yet, the implementation of new graphical documentation systems, such as Automated Digital Photogrammetry, has introduced a fresh approach to dealing with architectural surveys by making them more accessible to the general public and, to a certain extent, increasing their usability (Garfella, Máñez, Cabeza, & Soler, 2014). The present study aims, on the one hand, to offer an overview of architectural survey systems and, on the other hand, to evaluate the differences in the degree of precision or accuracy between the latest state-of-the-art methods and the already well-established ones. This will enable us to examine the results obtained in this experiment to look for concordances and discrepancies between them that can be helpful when using such systems to deal with tasks in the future.


2012 ◽  
Vol 43 (1) ◽  
pp. 58-77
Author(s):  
Arnon Atzmon

Abstract Over the years, scholars have adopted two parallel approaches to studying midrash aggadah. One approach, investigates questions relating to the compilations themselves, and the other approach focuses on the composition of the smaller, nuclear, midrashic units. The petiḥta or proem has been studied extensively by adherents of both approaches. In this paper, I argue that a flexible model is the one most appropriate for describing the petiḥta: a model which simultaneously utilizes both approaches. In the course of this paper, I studied one derasha, a petiḥta, and its subsequent evolution in several different compositions (Leviticus Rabbah; Tanḥuma Aharei Mot; Tanḥuma Va-Etchanan). By conducting that comparative study of the derasha, I achieved a fuller understanding of it both in terms of the proem as a product of oral discourse and in terms of the proem’s literary redaction within the context of the midrashic compositions. Ultimately, a better understanding of the petiḥta’s formulation and its Sitz im Leben contributes to our understanding of its contents and allows us to reveal the message that either the darshan or the redactor was attempting to convey.


2017 ◽  
Vol 8 (1) ◽  
pp. 78-95 ◽  
Author(s):  
Mehdi Bouras ◽  
Mohamed Imen Gallali

Abstract The aim of this comparative study between the French and American markets, characterized by a different ownership structure is to examine the relationship between managerial ownership, the board of directors, the equity-based compensation and corporate performance. Regardless of the selected sample, we found on the one hand, a non-linear relationship between managerial ownership and firm performance and on the other hand, in the case of managerial entrenchment board of directors is a substitute for managerial ownership to solve the agency problem. In addition, stock-based compensation is non-linear function with managerial ownership, contrary to previous studies that assume a monotonous or non-significant relationship. The hypothesis of endogeneity is valid only in the American case. This result leads us to believe that the U.S. CEO has a preference to hold a large percentage of shares of firms that generate a good performance to neutralize capital market monitoring. Our study is exclusive in terms of the effect of managerial ownership on corporate performance in terms of comparison between two markets, characterized by a difference in ownership structure. We determine the impact of equity compensation on the one hand, the managerial ownership where all the studies assume either a monotone or neutral relationship between these two variables and on the other hand, the effect of board in the alignment or managerial entrenchment cases.


2019 ◽  
Vol 3 (1) ◽  
pp. 25-34
Author(s):  
Laely Wulandari ◽  
Lalu Parman

In a comparative study of Eradicating Corruption in Indonesia and Japan appears that law culture plays a significant role. Indonesia has special institution that deals with corruption while Japan does not have it. Nevertheless, cases of corruption in Indonesia are higher than in Japan. This is due to the Indonesian culture of ewuh pakewuh, reluctant, and has two different views in dealing with corruption. On the one hand, Indonesia rejects corruption, but on the other hand, it commits actions that support corruption. Meanwhile, Japan has a strong culture of shame for committing law violations both at the community level and law enforcement officers.  


2019 ◽  
Vol 63 (2) ◽  
pp. 289-306
Author(s):  
Shimon Gesundheit

Abstract For quite a long time it has been part of the opinio communis within Hebrew Bible scholarship that compassion and empathy with persona miserae is in its very meaning invented by Ancient Israel. This view has been challenged by a comparative study of Frank C. Fensham. The present article shows on the one hand that care for the poor, widows and orphans is in fact not innovative. On the other hand, a closer analysis is able to show that the biblical and Jewish care for the strangers, slaves and animals is indeed unique.


Author(s):  
Marco Cappellini ◽  
Brahim Azaoui

AbstractIn our study we analyse how the same interactional dynamic is produced in two different pedagogical settings exploiting a desktop videoconference system. We propose to focus our attention on a specific type of conversational side sequence, known in the Francophone literature as sequences of normative evaluation. More particularly, we analyse data from two telecollaborative projects through desktop videoconference: a French-Chinese tandem, and a French-Irish telecollaboration between trainee teachers and learners of French as a foreign language. The comparison of two different pedagogical settings allows us to understand what types of interactional dynamics are co-constructed through the desktop videoconference environment and which characteristics are specific to each pedagogical setting. Within a socio-interactionist perspective, we analysed four hours of interactions, focusing particularly on the transmodal enactment of the sequences under scrutiny and its relation to learners’ uptake. Our results show on the one hand that there are some quantitative differences in the production of sequences of normative evaluation between the two pedagogical settings, and on the other hand that, contrary to our hypothesis, the co-construction of these sequences does not differ in multimodal density across the two contexts. We discuss these results and propose some tentative explanations for them.


Vivarium ◽  
2015 ◽  
Vol 53 (2-4) ◽  
pp. 269-293 ◽  
Author(s):  
Angel d’Ors

This article presents some results of the study of seventeen medieval treatises containing a logical analysis of the syncategorem ‘an’. On the one hand, a new classification is proposed of the literary genres of the Logica Modernorum, based on the four elements involved in the logical analysis of syncategorematic terms: the meaning of the syncategorem, logical rules, related sophisms, and proposed solutions. On the other, three texts are studied in detail, showing the origins and development of the logical analysis of the syncategorem ‘an’ between the 12th and the 13th centuries. Finally, a comparative study is offered of different analyses of the sophism ‘Tu scis an de mentiente sit falsum Sortem esse illum’, a sophism that does not raise any problem as to the particle ‘an’, but introduces the issue of the truth conditions of the dicta.


Author(s):  
Huda Muhammad Ramadan

This research studies in a descriptive and analytical approach an old modern issue. In the past, scholars considered the ruling regarding covering the feet of women while praying. They differed on this issue each due to their time and circumstances. The point here is that the changes in woman's lifestyle including changes of fashion, mixing with men, leaving her home for long hours, all of which could cause woman to miss the prayers should she not perform them in the location where she is present. I have clarified in this research, in a comparative jurisdiction of the four Islamic schools of thought, the evidence and scholars' viewpoints including those approving the revealing of the foot and those opposing it. These viewpoints have been considered by scrutinizing their evidence including the authenticity of the evidence on the one hand, and the strength of the inference on the other hand. It has been concluded that each group of scholars have their own evidence on which they based their stance. In addition, it has been concluded that differences on this issue happened to exist within the same school of thought whereby some scholars gave priority for woman to reveal her feet while others gave priority to the apparent meanings of the text which do not approve revealing it. Having discussed the viewpoints and scrutinized their evidence and the weight of inference, the researcher has reached the conclusion that supports the extent of the weight of the majority who call for the necessity to cover the woman's two feet while performing prayers, as they are classified part of the woman's body.


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