scholarly journals Trends in Colouring Blue Glass in Central Europe in Relation to Changes in Chemical Composition of Glass from the Middle Ages to Modern Age

Minerals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1001
Author(s):  
Zuzana Zlámalová Cílová ◽  
Michal Gelnar ◽  
Simona Randáková
Keyword(s):  
Chemical Composition ◽  
Middle Ages ◽  
Central Europe ◽  
Raw Materials ◽  
Raw Material ◽  
13Th Century ◽  
Blue Glass ◽  
Modern Age ◽  
The 19Th Century ◽  
The Middle Ages

The study deals with the development of the chemical composition of blue glass from the 13th to the 19th century in the region of Bohemia (Central Europe). Nearly 100 glass samples (colourless, greenish, and blue) were evaluated by an XRF method to distinguish the colouring components of blue glass. As early as in the 13th century, blue glass based on ash containing colouring ions of Co and Cu was produced here. To achieve the blue colour of glass, a copper-rich raw material was most likely applied. This information significantly complements the existing knowledge about glass colouring in the Middle Ages, as the glass of later periods was typically coloured with raw materials containing cobalt.

GLASS IN LATE ANTIQUITY: THE CONTINUITY OF TECHNOLOGY AND SOURCES OF SUPPLY

2008 ◽  
Vol 4 (1) ◽  
pp. 211-231 ◽  
Author(s):  
Lucia Saguí
Keyword(s):  
Middle Ages ◽  
Late Antiquity ◽  
Raw Materials ◽  
Scientific Research ◽  
Glass Production ◽  
Raw Material ◽  
Production Cycle ◽  
Hierarchical Basis ◽  
Ancient Glass ◽  
The Middle Ages

Scientific research and a series of important archaeological discoveries in recent years have opened up new perspectives on the study of ancient glass. Glass production seems to have been organised on a hierarchical basis. The primary workshops, mainly concentrated on the Syro-Palestinian coast, prepared the raw material by fusing sand from the river Belus with natron from Egypt. The product was then sent in blocks to all secondary workshops, the organisation of which was less elaborate. Here work was limited to re-fusing material that had already been worked. The widespread commercial movement of raw glass from East to West seems to have only come to a halt in the 9th c., when the export of natron from Egypt stopped. Consequently, a different flux was used, which was incompatible with the oriental sand. The adoption of local raw materials in the place of natron meant that the management of the entire production cycle became gradually autonomous, at different speeds and in different ways, during the course of the Middle Ages.

scholarly journals Europäische Friedhofskultur. Geschichte und Gegenwart

2019 ◽  
pp. 17-32
Author(s):  
Norbert Fischer
Keyword(s):  
19Th Century ◽  
Middle Ages ◽  
Central Place ◽  
The Third ◽  
Modern Age ◽  
Siglo Xix ◽  
The 19Th Century ◽  
The Middle Ages

El artículo ofrece una visión general de la cultura del cementerio europeo desde la Edad Media y de los cambios que ha experimentado este lugar central de la memoria. Los dos primeros puntos tratan sobre el enterramiento en el interior de las iglesias en la Edad Moderna y la reubicación de los cementerios extramuros. El tercer punto describe el movimiento de los cementerios tipo parque en el siglo XIX. En la siguiente sección, se discute la cultura de la tumba burguesa de esta época. El punto cinco está dedicado a la cremación y se profundiza sobre el entierro de las cenizas. En el punto seis se examina la exterritorialización actual utilizando el ejemplo de los entierros naturales. Finalmente, el punto séptimo describe las nuevas tendencias en la cultura del cementerio. The article offers an overview of the culture of the European cemetery since the Middle Ages and the changes that this central place of memory has undergone. The first two points are about the burial inside of the churches in the Modern Age and the relocation of the cemeteries outside the walls. The third point describes the movement of park-type cemeteries in the 19th century. In the next section, the culture of the bourgeois tomb of this era is discussed. Point five is devoted to cremation and deals in depth with the burial of ashes. In point six the current exterritorialization is examined using the example of natural burials. Finally, the seventh point describes the new trends in cemetery culture.

Alma Mater Studiorum. O genezie i początkach uniwersytetów

2017 ◽  
Vol 15 (2) ◽  
pp. 9-22
Author(s):  
Marek Maciejewski
Keyword(s):  
Middle Ages ◽  
Canon Law ◽  
18Th Century ◽  
Ancient Greece ◽  
Roman Law ◽  
Institutions Of Higher Education ◽  
13Th Century ◽  
New Era ◽  
Conducting Research ◽  
The 19Th Century

The origin of universities reaches the period of Ancient Greece when philosophy (sophists, Socrates, Plato, Aristotle, stoics and others) – the “Queen of sciences”, and the first institutions of higher education (among others, Plato’s Academy, Cassiodorus’ Vivarium, gymnasia) came into existence. Even before the new era, schools having the nature of universities existed also beyond European borders, including those in China and India. In the early Middle Ages, those types of schools functioned in Northern Africa and in the Near East (Baghdad, Cairo, Constantinople, cities of Southern Spain). The first university in the full meaning of the word was founded at the end of the 11th century in Bologna. It was based on a two-tiered education cycle. Following its creation, soon new universities – at first – in Italy, then (in the 12th and 13th century) in other European cities – were established. The author of the article describes their modes of operation, the methods of conducting research and organizing students’ education, the existing student traditions and customs. From the very beginning of the universities’ existence the study of law was part of their curricula, based primarily on the teaching of Roman law and – with time – the canon law. The rise of universities can be dated from the end of the Middle Ages and the beginning of modernity. In the 17th and 18th century they underwent a crisis which was successfully overcome at the end of the 19th century and throughout the following one.

The Four Paradoxes of Nuclear Strategy

1964 ◽  
Vol 58 (1) ◽  
pp. 23-35 ◽  
Author(s):  
Hans J. Morgenthau
Keyword(s):  
Middle Ages ◽  
Nuclear Weapons ◽  
Use Of Force ◽  
Nuclear War ◽  
Nuclear Strategy ◽  
Nuclear Age ◽  
Modern Age ◽  
Modes Of Thought ◽  
The Impact ◽  
The Middle Ages

The nuclear age has ushered in a novel period of history, as distinct from the age that preceded it as the modern age has been from the Middle Ages or the Middle Ages have been from antiquity. Yet while our conditions of life have drastically changed under the impact of the nuclear age, we still live in our thoughts and act through our institutions in an age that has passed. There exists, then, a gap between what we think about our social, political, and philosophic problems and the objective conditions which the nuclear age has created.This contradiction between our modes of thought and action, belonging to an age that has passed, and the objective conditions of our existence has engendered four paradoxes in our nuclear strategy: the commitment to the use of force, nuclear or otherwise, paralyzed by the fear of having to use it; the search for a nuclear strategy which would avoid the predictable consequences of nuclear war; the pursuit of a nuclear armaments race joined with attempts to stop it; the pursuit of an alliance policy which the availability of nuclear weapons has rendered obsolete. All these paradoxes result from the contrast between traditional attitudes and the possibility of nuclear war and from the fruitless attempts to reconcile the two.

The Main Stages of the Development of Incense Culture in China

2021 ◽  
Vol 20 (10) ◽  
pp. 24-37
Author(s):  
Elena E. Voytishek
Keyword(s):  
Traditional Medicine ◽  
Middle Ages ◽  
Raw Materials ◽  
Spiritual Healing ◽  
New Age ◽  
Animal Origin ◽  
Aesthetic Attitude ◽  
Ritual Practices ◽  
The Middle Ages

The article provides an overview of the main stages and trends in the development of the incense culture of China from antiquity to the present day. It covers religious and magical rituals, sanitary and hygiene, traditional medicine, a set of spiritual, healing, artistic, and game practices and rituals of Taoist-Buddhist and Confucian character. In China, over several millennia, a colossal experience has been accumulated in terms of the use of aromatic raw materials of plant, mineral and animal origin: thousands of treatises and reference books have been written, the properties of individual incense and their combinations have been studied, detailed classifications have been drawn up and principles of religious cults and ritual practices have been developed. Along with the applied value of incense, an aesthetic attitude toward incense aromas also developed, which repeatedly ensured periods of rapid flourishing of incense culture in antiquity, the Middle Ages and on the cusp of the New Age. Currently, the traditional aromatic culture in China is experiencing a period of upsurge and revival. This provides ample opportunities for its study in various fields of knowledge, which indicates the relevance and multidimensional nature of the study of this topic.

IMPACT OF INNOVATIVE METHOD OF PREPARING TOBACCO LEAVES FOR DRYING ON THE BASIC PARAMETERS OF QUALITY OF TOBACCO RAW MATERIAL

2019 ◽  
Author(s):  
Е.Е. Ульянченко
Keyword(s):  
Chemical Composition ◽  
Quality Indicators ◽  
Raw Materials ◽  
Raw Material ◽  
Tobacco Leaves ◽  
Commercial Grade ◽  
Innovative Method ◽  
Main Indicator ◽  
Basic Parameters

Исследовано влияние приема прорезания средней жилки на основные качественные показатели табачного сырья. Исследования проводили на листьях основных сортотипов табака Трапезонд и Остролист по массовым ломкам. Прорезание жилки осуществляли на инновационном оборудовании экспериментальном образце линии подготовки листьев табака к сушке ЛПТС360 (ВНИИТТИ, Краснодар). Качество табачного сырья с прорезанной жилкой определяли по товарным сортам, технологическим и курительным свойствам, химическому составу по методикам лабораторного контроля ВНИИТТИ. Инновационный способ подготовки табака к сушке в едином потоке с применением технологического оборудования, включающего прорезатель, выявил положительный технологический результат. Установлена эффективность приема прорезания средней жилки: срок естественной сушки листьев с прорезанной жилкой сократился в 2,5 раза выход 1го товарного сорта сырья составил 74,60 87,93 выход волокна сырья с прорезанной жилкой превышает минимальное значение технологических норм (75) в 1,15 1,26 раз условный расход сырья на единицу курительных изделий меньше норматива на 6 25 улучшен основной показатель химического состава табачного сырья (число Шмука) в 1,6 4,6 раза у сортотипа Трапезонд, в 1,2 1,5 раза у сортотипа Остролист дегустационные свойства сырья не ухудшились. Инновационный способ подготовки листьев табака к сушке, включающий прием прорезания средней жилки, рекомендуется для применения в производстве табачного сырья. The influence of middle vein cutting method on the main quality indicators of tobacco raw materials is studied. Studies were carried out on the leaves of the main varieties of tobacco Trapezond and Ostrolist, on mass breakdowns. Vein cutting was carried out on the innovative equipment of the line of preparation of tobacco leaves for drying LPTS360 (GNU VNIITTI RAA, Krasnodar). The quality of tobacco raw materials with a cut vein was determined by commercial grades, technological and Smoking properties, chemical composition in accordance with the methods VNIITTI. An innovative method of preparing tobacco for drying in a single stream with the use of technological equipment, including a cutter, revealed a positive technological result. The period of natural drying of leaves with cut veins decreased by 2,5 times. The yield of the 1st commercial grade of raw materials was 74,60 87,93. The output of the fiber raw material with cut vein exceeds the minimum value of technological norms (75) in 1,15 1,26 times. Conditional consumption of raw materials per unit of Smoking products is less than the norm by 6 25. The method of cutting the middle vein of the leaves improves the main indicator in the chemical composition of tobacco raw materials (Schmuck ratio) 1,6 4,6 times in the variety Trapezond and 1,2 1,5 times in the variety Ostrolist. The tasting properties of raw materials have not deteriorated. Analysis of raw material quality indicators showed that the innovative method of cutting the middle vein is effective and recommended for use in the production of tobacco raw materials.

The Horn of the Unicorn

Antiquity ◽  
1953 ◽  
Vol 27 (105) ◽  
pp. 15-19 ◽  
Author(s):  
Humphrey Humphreys
Keyword(s):  
19Th Century ◽  
Middle Ages ◽  
Old Testament ◽  
The 19Th Century ◽  
Do So ◽  
The Middle Ages

Though everyone now agrees that the unicorn never existed, this unanimity is quite recent. All through the 19th century there were periodic reports of its presence in darkest Africa or on the Asiatic steppes, and hopes that it would turn out to be a reality died hard. But if there never was such a creature why did the men of the Middle Ages believe in it so firmly and depict it so often? As Christians it was incumbent on them to do so, for it was mentioned in the Old Testament and, therefore, must be real. Its presence there was due to the authors of the Septuagint, the Hellenised Jews who, at Alexandria, in the centuries between the city's foundation and the Christian era, translated their sacred books from Hebrew into Greek and on seven occasions used the word μονόκερως (Greek for unicorn).

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