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    Archived pages: 15 . Archive date: 2012-11.

  • Title: Interesting topics about Rheology | Degennesconference.fr
    Descriptive info: .. degennesconference.. fr.. Ein weiterer WordPress-Blog.. Pierre-Gilles de Gennes.. De Gennes Discussion Conference.. Chamonix.. Physiology.. Geophysics.. Rheology.. Food Rheology.. Studying Rheology.. Works.. Eine Nicht-Newton’sche Flüssigkeit stellt sich vor.. Viele Legenden und Geschichten berichten darüber, dass Menschen über Wasser gehen konnten.. Stimmt dieser Fakt wirklich oder war es vielleicht doch eine Nicht-Newton’sche Flüssigkeit, auf der sie sich bewegten? Im Folgenden soll solch eine Flüssigkeit vorgestellt werden.. Wer Lust hat, darf das Experiment auch gerne zu Hause selbst ausprobieren.. Die Materialien Um dieses Experiment durchzuführen [.. ].. Zuckermessung im Speichel bald möglich?.. Bisher konnte man die Zuckermessung bei Diabetespatienten nur an der Fingerkuppe durchführen.. Diese Methode ist etwas schmerzhaft und ist stets eine lästige Angelegenheit.. Die Lösung bietet eine neuartige Miniaturmaschine, die den Zuckergehalt nicht im Blut misst, sondern im Speichel eines Menschen.. Dieses Gerät wurde in den Vereinigten Staaten von Amerika entwickelt.. Auf der Grundlage der [.. BASF bezieht neuen Standort in Perth.. Die Badische Anilin- und Soda-Fabrik, kurz BASF, gehört zu den bekanntesten Chemiekonzernen in Deutschland und der Welt.. In rund achtzig Ländern arbeiten über 111.. 000 Mitarbeiter für den Erfolg des Unternehmens weltweit.. Neben dem Hauptsitz in Ludwigshafen und anderen zahlreichen Außenstellen eröffnet das Unternehmen stetig neue Standorte auf der ganzen Welt.. Seit Dezember 2011 wird auch  ...   Gennes was a French physicist.. He was born in Paris in 1932.. Until 1955 he studied at the École Normale Supérieure.. Later he became a research engineer and defended his PhD, too.. The biggest award, which he received, was the Nobel Prize in physics in 1991.. In tribute to him, the De Gennes Discussion Conference has been carried out in the French city Chamonix in 2009.. The French Group of Rheology organized this event under the auspices of the European Society of Rheology.. Degennesconference.. fr presents the most important topics of this conference and much more besides.. Find out more about the science of rheology.. It is a study dealing with the flow of matter.. In the center of attention are substances in a liquid state.. Our website offers a lot of other interesting facts and information about the fields of geophysics, physiology or food rheology and their relation to the scientific subject of rheology.. As well, there are useful details about studying rheology and scientific works, which deal with this topic.. Furthermore, the category.. News.. deals with the latest messages about rheology in general or about special purviews.. Market leading companies and interesting facts about, for example, non-Newtonian fluids are presented, too.. Letzte Artikel.. 2012 -.. |.. Impressum..

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  • Title: Pierre-Gilles de Gennes | degennesconference.fr
    Descriptive info: The French physicist Pierre-Gilles de Gennes was born on 24.. th.. October in 1932 in Paris.. He was home-schooled and later studied at the ENS (École Normale Supérieure) until the year 1955.. At the Saclay Center of the Commissariat à l’Énergie Atomique he became a research engineer.. In 1957 he defended his PhD.. His Career.. After becoming an assistant professor in Orsay, de Gennes started to study liquid crystals in 1968.. The years later he started to teach as a professor at a famous college in France, the so called Collège de France.. Furthermore, he was an active participant in a joint project of Saclay, Strasbourg and the College of France, called STRASACOL.. This national project offered the opportunity  ...   and Harvey Prize as well as the Lorentz Medal.. It was the year 1991, when de Gennes was awarded the Nobel Prize in physics for discovering.. methods developed for studying order phenomena in simple systems can be generalized to more complex forms of matter, in particular to liquid crystals and polymers.. Furthermore, he received the Holweck Prize.. It is an award, which was allocated by the French and British Physical Society.. In the following other prizes and awards shall be listed:.. Ampere Prize of the French Academy of Science.. Gold medal from the French CNRS.. Matteuci Medal from the Italian Academy.. Polymer awards from APS and ACS.. Pierre-Gilles de Gennes died in the city of Orsay in the year 2007..

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  • Title: De Gennes Discussion Conference | degennesconference.fr
    Descriptive info: The so called De Gennes Discussion Conference took place between the second and the fifth February in the year 2009 in Chamonix in the foothills of the Mont Blanc.. It was presented by the French Group of Rheology.. The conference was under the auspices of the European Society of Rheology.. According to the motto “From reputation to glassy materials: de Gennes pioneering work in rheology and recent developments” a lot of scientists and rheologists presented their work or other interesting facts and researches.. There is already a great community in the field of rheology, which wanted to present its scientific purview by means of the conference.. Therefore, the  ...   popular prizes.. In the years 1988 and 1990, for example, he received the Harvey Prize, the Wolf Prize and also the Lorentz Medal.. After receiving the Nobel Prize Pierre-Gilles de Gennes worked at the ESPCI, the École Supérieure des Physique et de Chimie Industrielles de la Ville de Paris.. The Conference.. Different scientists and professors read their lectures and went on to talk about different aspects of rheology.. As well there were thematic workshops and round tables.. The following main topics were more in the limelight of the de Gennes Discussion Conference:.. Polymer melt rheology and dynamics.. Polymers in solutions and specific interactions.. Polymers at surfaces and interfaces.. Suspensions..

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  • Title: Chamonix | degennesconference.fr
    Descriptive info: Chamonix-Mont-Blanc was the venue of the de Gennes Conference in the year 2009.. This lovely city is situated in the so called Haute-Savoie Département in the Rhône-Alpes region.. In 1924, Chamonix was the venue of the Olympic Games.. Chamonix is a city close to the border of Italy.. Furthermore, it is known as the highest commune of France.. It is for this reason, why skiers and other winter sports fans visit this city every year.. Tourism.. In this region the development of tourism started in the late ninetieth century.. It was influenced by national and also international activities.. Another evolution of Chamonix was the change of name in Chamonix-Mont-Blanc.. In the year 1924, the first Olympic Winter Games took place in the beautiful  ...   the number of tourist beds amounted about 60.. 000.. Every year about five million visitors had been recorded.. Winter Sports.. Chamonix can be described as a very famous resort of France in the field of winter sports.. Especially mountain climbers visit this place for special extreme outdoor activities.. Climbing, extreme skiing, rafting, canoeing, and paragliding are only a few examples, which can be mentioned.. In summer people have also the possibility to go biking.. Another attraction of Chamonix is the cable car, which was constructed in 1955.. It can be pointed out, that it is the highest cable car of the world.. Visitors have the possibility to cross the Mont Blanc massif by this transportation.. Unfortunately, the cable car is only open in summer..

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  • Title: Physiology | degennesconference.fr
    Descriptive info: Physiology can be described as the science, which prospects the function of living systems.. The main focus is on organisms or organ systems as well as on organs, cells and bio-molecules.. Physiology wants to find out chemical and also physical functions of these systems.. Physiology is derived from the Greek word.. Physis.. (φύσις), which means origin or nature and the word.. Logia.. (λογία), which can be translated as the study of something.. Human Physiology.. The science of human physiology deals with different mechanical, biochemical and physical functions of a human being and its organs or cells.. The most important physiological field is the level of organs and systems within systems.. This science is at an early stage and, consequently,  ...   It is for this reason, why anatomy and physiology are coherent.. Physiology and Rheology.. Physiology is also linked with the field of rheology, as it prospects bodily fluids with complex structures and compositions.. It particularly concentrates on the viscoelastic flow characteristics.. As an example the blood flow can be mentioned.. The hemorheology is a special field, which combines physiology and rheology.. This special study deals with the flow properties of blood in general and focusses its elements as well.. Plasma, red blood cells, white blood cells and platelets can be named as some elements of blood.. The blood viscosity is determined by different characteristics, which shall be listed in the following:.. plasma viscosity.. hematocrit.. mechanical behavior of red blood cells..

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  • Title: Geophysics | degennesconference.fr
    Descriptive info: The study of geophysics belongs to the field of rheology, too.. It prospects for example molten lava or fluid mudslides and the flow of those substances.. Furthermore, there are different earth materials, which flowed only for a certain period of time.. These materials are called.. rheids.. Granite is an example for this.. It has the ability to flow plastically.. At room temperature it has a viscous flow by means of a very small yield stress.. There are different experiments, which demonstrate the viscosity of granite.. Geotechnical Engineering.. The Geotechnical engineering, or the so called soil engineering, is a very important part in the field of construction and architecture.. Such engineers prospect the stability  ...   As an example the.. cone penetration test.. can be mentioned.. Furthermore, pile driving is a very good method for checking the stability of different soil types.. In the following the most important soil types shall be listed:.. Clay.. Fractured shale.. Gravels.. Loam.. Sand.. Silt.. Geotechnical engineers, or also soil engineers, use soil and bore logs for controlling the soil characteristics of the land.. Furthermore, vibratory and mechanical impact hammers are used for prospecting the behavior of different materials.. This dynamic testing is very important.. In addition to this, a nuclear densometer can be used for different calculations.. At the end, there will be a simple linear equation for calculating the stability of the soil..

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  • Title: Rheology | degennesconference.fr
    Descriptive info: The science of rheology describes a study, which deals with the flow of matter, overridingly in a liquid state.. It also prospects the so called.. soft solids.. Furthermore, solids under special conditions are explored.. Under special circumstances, for example under applying forces, they react with a plastic flow or elasticity.. These substances have an extremely complex structure.. A few examples shall be named in the following:.. Blood.. Polymers.. Mud.. Sludge.. A lot of foods and additives.. The Professor of Lafayette College, Eugene C.. Bingham, created the term of rheology by means of the aphorism.. panta rei.. , which means.. everything flows.. Newtonian Fluids.. The study of rheology distinguishes between two fluids: the Newtonian Fluids  ...   the strain rate will never change.. Air or water can be named as two very important examples for Newtonian Fluids.. Non-Newtonian Fluids.. There are a lot of fluids, which do not have only one specific coefficient of viscosity.. It is for this reason, why the strain rate changes.. The task of rheology is the study of the special behavior of those fluids.. Ketchup can be named as only one example of Non-Newtonian Fluids.. Its viscosity can be changed by shaking or other mechanical actions.. This sweet and red sauce can be described as a shear thinning material: the higher the velocity, the smaller the viscosity.. Blood and quicksand are other examples for Non-Newtonian Fluids..

    Original link path: /rheology/
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  • Title: Food Rheology | degennesconference.fr
    Descriptive info: The field of food rheology is a very important area of research as its results are used in the manufacture and also in the processing of different foods.. The cheese, for example, is prospected in relation to its rheological properties.. Furthermore, food rheology is the science, which analyzes these already mentioned rheological properties of different products in the field of food.. In the center of attention are the consistency and the flow of food under special conditions and situations.. For fathoming how long food can be stored and how the food texture changes, the food rheology observes the consistency, degree of fluidity, or mechanical characteristics.. Psychology and Food Rheology.. The ultimate consumer  ...   manufacturing.. Thickeners.. The thickeners, or the so called thickening agents, can be described as a special substance, which has the ability to increase the viscosity of a special food product after adding it.. Although viscosity changes, there will not be a transforming of other important food-characteristics (for example the taste).. The thickening agents offer the possibility to stabilize different products in the field of the food industry.. As well these thickeners are used in cosmetics industries for sanitary products, as they are able to form a gel.. In the food areas special food thickeners are made out of polysaccharides or proteins.. Vegetable gums and pectin can be mentioned as two active thickening agents..

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  • Title: Studying Rheology | degennesconference.fr
    Descriptive info: Rheology deals with deformation and flow of matter.. The fields of elasticity theory, plasticity theory and fluid mechanics (of non-Newtonian fluids) are the most important parts of this study.. If you want to study rheology, you will get an insight into different methods and tools as well as into the influence of process and processing parameters.. You will have the opportunity to work with the following laboratory equipment:.. Single-screw measuring extruder.. Measuring mixer.. Twin-screw extruders.. Melt pump.. Roll granulator with a bain-marie.. Mill.. Gravimetric metering screw.. Advanced Rheology.. The study of advanced rheology may include different fields of rheology in relation to other fields of science, such as chemistry, physics, biology or other.. In  ...   of technical flow issues.. Fluid mechanics of non- Newtonian fluids.. Computational Fluid Dynamics.. Microfluidics.. Agglomeration and technology.. Food processing technology.. Advanced rheology can be combined with different subjects of other faculties, such as chemical engineering, mathematics, mechanical engineering, physics, chemistry and biosciences.. Important topics can be as well: fluid mechanics, polymers, colloids, interfacial Engineering and physics of soft matter.. The University of Karlsruhe in Germany.. At the so called.. Universität Karlsruhe.. (.. TH.. ) you will have the possibility to study at the Faculty of Chemical and Process Engineering.. There are twelve university chairs of six institutes and more than thousand students.. Since 1928 the university offers the opportunity to study chemical and process engineering..

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  • Title: Works | degennesconference.fr
    Descriptive info: There are a lot of interesting books, which deal with the topic of rheology.. Especially for studying or working at this scientific field, you will need core textbooks and other further reading.. In the following two important rheological books shall be presented.. The Rheology Handbook by Thomas G.. Mezger.. This book is addressed to anyone who wishes to have a greater in-depth understanding of the mathematical and physical principles of rheology.. The Rheology Handbook explores flow properties, waterborne dispersions, surfactant systems as well as viscoelastic behavior.. It is useful for beginners, who want to get some insight into the study of rheology, or for advancers, who want to refresh the knowledge about this science.. It  ...   the book, which is on the one hand an excellent reference book and on the other hand a great textbook for studying rheology.. ISBN/EAN 978-3-86630-864-0.. Theoretical and Applied Rheology by P.. Moldenaers and R.. Keunings.. In 1992 the International Congress on Rheology took place in Brussels, Belgium.. There were more than 900 authors from about 35 countries, who presented their studies and research results.. The Theoretical and Applied Rheology by Moldenaers and Keunings summarizes and unites the most important presentations.. The covered fields of rheology are the following:.. biorheology.. composites.. experimental methods.. fluid mechanics.. foams.. food rheology and electrorheology.. industrial rheology.. molecular theories.. polymer melts.. polymer processing.. polymer solutions.. rheometry.. rubber.. solids.. theoretical rheology.. ISBN/EAN 978-0-444-89007-8..

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  • Title: Eine Nicht-Newton’sche Flüssigkeit stellt sich vor | degennesconference.fr
    Descriptive info: Die Materialien.. Um dieses Experiment durchzuführen und eine Nicht-Newton’sche Flüssigkeit herzustellen, benötigt man nichts weiter als folgende Zutaten und Geräte:.. Maisstärke.. Wasser.. Eine Schüssel.. Einen Löffel.. Zur Durchführung.. Die Maisstärke sollte mit dem Wasser im Verhältnis von drei zu zwei gemischt werden, d.. h.. drei Tassen Stärke sollten mit zwei Tassen Wasser vermengt werden.. Es entsteht ein flüssiger Brei, mit dem man das Experiment beginnen kann.. Nun kommt der Löffel zum Einsatz.. Taucht man diesen langsam in die Flüssigkeit ein, kann eigentlich nichts Auffälliges beobachtet werden.. Jetzt sollte man jedoch versuchen, den Löffel wieder ruckartig herauszuziehen.. Wird es gelingen? Die Antwort ist: Nein! Man wird eher die gesamte Schüssel nach oben ziehen.. Die  ...   wurde.. Der Feststoff Maisstärke und die Flüssigkeit Wasser weisen die Eigenschaft auf, dass sie sich chemisch nicht miteinander verbinden.. Aus diesem Grund entsteht eine Nicht-Newton’sche Flüssigkeit.. Aufgrund der Eigenschaft der variierenden Viskosität können unterschiedliche Kräfte, die auf die Substanz einwirken, unterschiedliche Zustände auslösen.. Haut man mit dem Löffel auf die Mischung, bleibt sie fest und verhält sich wie ein Feststoff.. Wird er jedoch behutsam eingetaucht, weist die Suspension die Eigenschaft einer Flüssigkeit auf.. Die Weiterführung.. Für besonders Mutige ist zu empfehlen, sich einen großen langen Behälter zu mischen, um zu versuchen, ob man auf dieser Nicht-Newton’schen Flüssigkeit laufen kann.. Ist man schnell genug könnte dieses Experiment durchaus gelingen.. Wer zu langsam ist, versinkt..

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    Archived pages: 15