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Diffusion definition biologie

Diffusion - Wikipedi

  1. Diffusion (av latinets diffusio, av diffundere, utbreda) är den spontana spridningsprocess som äger rum när något, oftast gaser eller vätskor, med en egenskap skilt från omgivningen sprids, blandas och jämnas ut.Ofta orsakas diffusion av något slags slumpvandring.. Ett exempel på detta är när salt sprider sig jämnt i en lösning
  2. Diffusion Definition. Diffusion is the net passive movement of molecules or particles from regions of higher to regions of lower concentration. For diffusion to occur there must be a concentration gradient.The dissimilarity in the amounts of solutes, particles, or molecules between the two regions will cause them to move between the two regions.To define diffusion in the biological context.
  3. Das selbstständige Durchmischen von Teilchen verschiedener Stoffe wird als Diffusion bezeichnet. Diffusion kommt zustande, weil sich die Teilchen aller Stoffe bewegen und diese Bewegung der Teilchen zu einer allmählichen Durchmischung führt.Besonders ausgeprägt tritt die Diffusion bei Gasen und Flüssigkeiten auf. Auch bei festen Körpern ist sie möglich.Die Aufnahme des Wasser

diffusion. diffusion (latin diffuʹsio, av diffuʹndo 'sprida (sig),'), spontan materialtransport eller utbredning av ett ämne, orsakad av slumpvisa förändringar i egenrörelserna hos ämnets atomer eller molekyler. Alla mikroskopiska partiklar befinner sig i rörelse, och när partiklarna i mediet kolliderar förändras hastigheter och riktningar slumpvis Diffusion Definition. Diffusion is a physical process that refers to the net movement of molecules from a region of high concentration to one of lower concentration. The material that diffuses could be a solid, liquid or gas. Similarly, the medium in which diffusion occurs could also be in one of the three physical states

Definition der Diffusion Was passiert bei der Diffusion? Diffusion und Osmose in der Biologie mit kostenlosem Vide Diffusion (v.lateinisch diffundere ausgießen, verstreuen, ausbreiten) ist ein natürlich ablaufender, physikalischer Prozess. Er führt mit der Zeit zur vollständigen Durchmischung zweier oder mehrerer Stoffe durch die gleichmäßige Verteilung der beteiligten Teilchen. Bei den Teilchen kann es sich um Atome, Moleküle oder Ladungsträger handeln. Bei den Stoffen handelt es sich meist um.

Diffusi ọ n Biologie passiver Transport von Molekülen in Zellen oder zwischen Zellen, der darauf beruht, dass zwischen zwei Flüssigkeiten oder Gasen unterschiedl. unterschiedlicher Konzentration solange ein Konzentrationsausgleich stattfindet, bi Diffusion et l'osmose sont des critères dans le domaine de la biologie. Ils décrivent deux opérations similaires dans les domaines de mouvement des. Biologie - Définition. La biologie est la science de la vie La diffusion n'est possible que si les solutions sont séparées par une membrane perméable. La diffusion simple ou libre. La diffusion simple est la diffusion à travers la membrane plasmique (dans le sens des concentrations fortes vers les concentrations faibles, jusqu'à équilibre des concentrations de part et d'autre de la membrane). La diffusion libre est un phénomène physique passif Diffusion w [von latein. diffusio = Auseinanderfließen, Ausbreitung; Verb diffundieren], passiver Transport von Molekülen in Gasen, Flüssigkeiten oder Festkörpern entlang einem Konzentrationsgefälle (Gradient, Konzentration), der den Ausgleich von Konzentrationsunterschieden anstrebt ( vgl. Abb.).Die Diffusion ist ein irreversibler Prozeß, der mit einer Zunahme der Entropie verknüpft. ♦ Diffusion de la lumière. Dissémination ou changement de direction des rayons lumineux produit par passage à travers certains milieux. Diffusion par diffraction, par réflexion. La couleur bleue du ciel est due à la diffusion de la lumière solaire par les gaz de l'atmosphère (Hist. gén. sc., t. 3, vol. 2, 1964, p. 223)

Qu'est ce que l'osmose

Diffusion - Definition and Examples - Biology Online

Die Diffusion ist überlebensnotwendig für den Körper. Tritt eine spontane Vermischung von Gasen oder Flüssigkeiten aufgrund der Brown'schen Molekularbewegung auf, spricht man von einer Diffusion. In der Biologie kommen Diffusionen in der Lunge oder den Zellen vor Diffusion und Osmose sind passive Prozesse, da die Zelle keine Energie aufwenden muss um den Transport der Stoffe zu gewährleisten. Hier werden nun Diffusion und Osmose vorgestellt und die Unterschiede in den Prozessen herausgestellt. Diffusion. Der Transport von Molekülen durch die Zellmembran hindurch wird auch als Diffusion bezeichnet Definition. Als Diffusion bezeichnet man einen Vorgang, welcher vermehrt in der Biologie vorkommt. In dieser handelt es sich um den Prozess der gleichmäßigen Durchmischung von mindestens zwei unterschiedlichen Stoffen (Flüssigkeiten und Gase vermehrt, selten Feststoffe und Plasmen), welche sich in ein gleichmäßiges Verhältnis vermischen.. Hierbei erfolgt die Bewegung der Teilchen von der.

Définitions de diffusion. Phénomène par lequel un milieu de propagation produit une répartition continue, dans de nombreuses directions, de l'énergie d'une onde (électromagnétique ou autre) Diffusion Is Everywhere. The diffusion of gases is happening all around us, even though we usually can't see it! Oxygen, carbon dioxide and other gases spread out within your room, your home and.

Diffusion in Biologie Schülerlexikon Lernhelfe

  1. Diffusion, process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration. A familiar example is the perfume of a flower that quickly permeates the still air of a room
  2. Diffusion w [von latein. diffusio = Auseinanderfließen, Ausbreitung; Verb diffundieren], passiver Transport von Molekülen in Gasen, Flüssigkeiten oder Festkörpern entlang einem Konzentrationsgefälle (Gradient, Konzentration), der den Ausgleich von Konzentrationsunterschieden anstrebt ( vgl. Abb. ).. Diffusion (v. lateinisch diffundere ausgießen, verstreuen, ausbreiten) ist ein natürlich.
  3. Diffusion is the movement of particles from higher to lower concentration. Find out more in this Bitesize science video for KS3

diffusion - Uppslagsverk - NE

Grundlagenvideo zum Thema Diffusion. _____ Auf unserer Homepage helfen wir dir gerne bei inhaltlichen Fragen w.. molekularbewegung definition konzentrationsausgleich osmose Dieses Biologie-Video zum Thema Bau, Funktion, Stoffwechsel und Stofftransport der Pflanze gehört zum Themengebiet Pflanzen und Pilze Diffusion, der Stofftransport in Gasen, Flüssigkeiten oder Festkörpern unter dem Einfluss von Konzentrationsdifferenzen.Die D. erfolgt spontan aufgrund der mikroskopischen Teilchenbewegung. Sie strebt den Ausgleich von Konzentrationsunterschieden an. D. ist ein irreversibler Prozess, der mit einer Zunahme der Entropie verbunden ist und nur unter Arbeitsaufwand rückgängig gemacht werden.

La diffusion est un processus de propagation.En sciences, elle est un processus de mouvement moléculaire. Ainsi, en termes thermodynamiques, elle désigne la capacité d'un matériau (milieu) à transmettre un flux de chaleur. En langage courant, il existe la diffusion (culturelle) de connaissances, actualités, attitudes, coutumes, modes, événements télévisés, etc Not: Exempelmeningarna kommer i huvudsak från svenska dagstidningar, tidskrifter och romaner. Genom diffusion och institutionalisering av EBP menar jag att det har börjat ske en förändring av strukturen och funktionen hos sociala system.; Urvalsbias hanterades med randomisering och diffusion utgjorde inget reellt problem eftersom samtliga lärare tog del av samma intervention Diffusion simple: La diffusion simple est un type de diffusion non assisté dans lequel une particule passe d'une concentration supérieure à une concentration inférieure. Diffusion facilitée: La diffusion facilitée est le transport de substances à travers une membrane biologique à travers un gradient de concentration au moyen d'une molécule porteuse La diffusion facilitée (ou transport facilité) est un mécanisme de diffusion facilitée par des transporteurs membranaires.La diffusion facilitée correspond au passage spontané de molécules ou d'ions à travers une membrane biologique en passant par des molécules de transport Svensk översättning av 'diffusion' - engelskt-svenskt lexikon med många fler översättningar från engelska till svenska gratis online

Osmose Definition: Die einseitige Diffusion eines Stoffes (in der Regel Wasser) durch eine semipermeable Membran nennt man Osmose (griech. osmos = Eindringen). Eine semipermeable (halbdurchlässig) Membran zeichnet sich dadurch aus, dass sie nur für bestimmte Stoffe durchlässig ist Diffusion is the net movement of anything (for example, atom, ions, molecules) from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in concentration. The concept of diffusion is widely used in many fields, including physics (particle diffusion), chemistry, biology, sociology, economics, and finance (diffusion of people, ideas, and price. Diffusion definition is - the state of being spread out or transmitted especially by contact : the action of diffusing. How to use diffusion in a sentence Diffusion -the process by which molecules spread from areas of high concentration, to areas of low concentration. When the molecules are even throughout a space - it is called EQUILIBRIUM. Concentration gradient - a difference between concentrations in a space.. Molecules will always move down the concentration gradient, toward areas of lesser concentration Diffusion is different from other transport processes in that it results in mixing without bulk matter flow. How it works is that molecules in motion from thermal energy randomly move about. Over time, this random walk leads to uniform distribution of different particles

diffusion definition: 1. the action of spreading in many directions: 2. (of a gas or liquid) the process of spreading. Learn more 'But diffusion of ideas does not mean they are implemented; it only means they are talked about.' 'Some skeptics have dismissed this diffusion of democratic ideas as 'Westernization' pure and simple.' 'Such interpenetration and diffusion of ideas, images, and information is made possible by the Internet on a global scale. Anomalous diffusion is a diffusion process with a non-linear relationship between the mean squared displacement (MSD), σ r 2, and time, in contrast to a typical diffusion process, in which the MSD is a linear function of time.Physically, the MSD can be considered the amount of space the particle has explored in the system. An example of anomalous diffusion in nature is the subdiffusion that. Facilitated diffusion is the transport of substances across a biological membrane from an area of higher concentration to an area of lower concentration with the help of a transport molecule. Since substances move along the direction of their concentration gradient, chemical energy is not directly required.Examples of biological processes that entail facilitated diffusion are glucose and amino. diffusion meaning: 1. the action of spreading in many directions: 2. (of a gas or liquid) the process of spreading. Learn more

Diffusion - Definition, Examples and Types Biology

The term diffusion applies both to dissemination of information about a new technology and dissemination of the technology itself; for instance, new cooking stoves.. 1. Rural common property resources: a growing crisis. I like to use reflected light as much as possible, and the source can be anything as long as the angle and diffusion is good.. Sell A House With Creative Photo Lighting. Diffusion definition, act of diffusing; state of being diffused. See more Diffusion coefficient definition at Dictionary.com, a free online dictionary with pronunciation, synonyms and translation. Look it up now In cryptography, confusion and diffusion are two properties of the operation of a secure cipher.. Confusion and diffusion were identified by Claude Elwood Shannon in his paper, Communication Theory of Secrecy Systems published in 1949.In Shannon's original definitions: Confusion refers to making the relationship between the key and the ciphertext as complex and as involved as possibl diffusion (countable and uncountable, plural diffusions) The act of diffusing or dispersing something, or the property of being diffused or dispersed; dispersion. The scattering of light by reflection from a rough surface, or by passage through a translucent medium. The intermingling of the molecules of a fluid due to random thermal agitation

Diffusion - Lexikon der Biologie

Diffusion • Definition, Diffusion in der Biologie · [mit

Diffusion Definition Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration down the concentration gradient. Read on to explore what is diffusion and the different types of diffusion Whereas diffusion measures the extent to which the technology spreads throughout the organization. To distinguish the two, let's take the example of new accounting software technology. Technology infuses an organization when, for example, all finance department staff use it diffusion - WordReference English dictionary, questions, discussion and forums. All Free passive diffusion: the protein-mediated transport of a compound across a biomembrane that is not ion-driven; a saturable transport system. Synonym(s): passive transpor

Facilitated Diffusion Definition. Facilitated diffusion is a form of facilitated transport involving the passive movement of molecules along their concentration gradient, guided by the presence of another molecule - usually an integral membrane protein forming a pore or channel.. Facilitated diffusion does not directly involve high-energy molecules like adenosine triphosphate (ATP) or. Kommissionen ger därigenom företagen de upplysningar som är nödvändiga för att de skall kunna försvara sig, inte bara mot konstaterandet av en överträdelse utan även mot åläggandet av böter (domen i de ovannämnda förenade målen Musique diffusion française m.fl. mot kommissionen, punkt 21, och domen i det ovannämnda målet ABB Asea Brown Boveri mot kommissionen, punkt 78) Reverse hierarchical diffusion is when culture spreads from the bottom of a hierarchy to the top, instead of in the normal direction from the top to the bottom Definition from Wiktionary, the free dictionary. Jump to navigation Jump to search. See also: Biologie and biologię Diffusion Definition Biology: the Ultimate Convenience! It is a microscopic process, which can lead to macroscopic effects. Consequently, it differs from the very simple diffusion. Channel diffusion is also a sort of passive transport that occurs with the assistance of membrane transport proteins

Diffusion - Biologie

Diffusion is the act of dispersing something, spreading it out from a central point. When an idea catches on, that's a type of diffusion Definition av diffusion akronym term som används i tillverkningen Benedetta Bodini, Olga Ciccarelli, in Diffusion MRI (Second Edition), 2014. 11.4 Conclusions. Diffusion MRI is one of the most interesting and promising techniques available today to explore neurological diseases. This chapter shows that it can be successfully applied to several disorders of the central nervous system affecting both the brain and spinal cord

Diffusion (Biologie) aus dem Lexikon - wissen

diffusion [dĭ-fu´zhun] 1. the state or process of being widely spread. 2. the spontaneous mixing of the molecules or ions of two or more substances resulting from random thermal motion; its rate is proportional to the concentrations of the substances and it increases with the temperature. In the body fluids the molecules of water, gases, and the ions. Gas - Gas - Diffusion: Diffusion in dilute gases is in some ways more complex, or at least more subtle, than either viscosity or thermal conductivity. First, a mixture is necessarily involved, inasmuch as a gas diffusing through itself makes no sense physically unless the molecules are in some way distinguishable from one another. Second, diffusion measurements are rather sensitive to the.

Diffusion in materials synonyms, Diffusion in materials pronunciation, Diffusion in materials translation, English dictionary definition of Diffusion in materials. diffusion In the process of diffusion of a single solute,. Diffusion definition: the act or process of diffusing or being diffused; dispersion | Meaning, pronunciation, translations and example Quick definitions from WordNet (diffusion) noun: the spread of social institutions (and myths and skills) from one society to another noun: (physics) the process of diffusing; the intermingling of molecules in gases and liquids as a result of random thermal agitation noun: the property of being diffused or dispersed noun: the act of dispersing or diffusing something (The diffusion of knowledge

Diffusion Coefficient. Diffusion coefficients measured in the laboratory and in situ were also used to model natural-tracer profiles across numerous argillaceous formations, and the resulting diffusion times were always within the range that is plausible and consistent with independent palaeo-hydro-geological arguments (Mazurek et al., 2009) Diffusion is a process where molecules of a material move from an area of high concentration (where there are many molecules) to an area of low concentration (where there are fewer molecules) until it has reached equilibrium (molecules evenly spread). A diagram of diffusion happening

Definition of EDDY DIFFUSION in the Definitions.net dictionary. Meaning of EDDY DIFFUSION. What does EDDY DIFFUSION mean? Information and translations of EDDY DIFFUSION in the most comprehensive dictionary definitions resource on the web Hence, passive diffusion does not utilize cellular energy for the transport of molecules. Key Areas Covered. 1. What is Active Diffusion - Definition, Types of molecules, Transport Mechanism 2. What is Passive Diffusion - Definition, Types of Molecules, Transport Mechanism 3. What are the Similarities Between Active and Passive Diffusion

diffusion définition biologie / BeeVar

Define water diffusion. water diffusion synonyms, water diffusion pronunciation, water diffusion translation, English dictionary definition of water diffusion. diffusion In the process of diffusion of a single solute,. Definition and synonyms of diffusion from the online English dictionary from Macmillan Education.. This is the British English definition of diffusion.View American English definition of diffusion.. Change your default dictionary to American English Example A new fashion brand is launched at a fashion week.The brand is well received by the fashion media. The company opens shops in 8 fashion capitals and is positively reviewed by customers who share their experiences with friends. Within a year, 50% of potential customers have heard of the brand, 10% have some level of brand awareness, 5% have tried the product and 1% are brand loyal Another word for diffusion. Find more ways to say diffusion, along with related words, antonyms and example phrases at Thesaurus.com, the world's most trusted free thesaurus

Transport membranaire — Wikipédi

What is osmosis? osmosis definition. reverse osmosis system. osmosis vs diffusion. how does osmosis work? osmosis types and examples Further, as the diffusion length of these excitons is only of few nanometres (approximately 8-10 nm) before it will relax back to the ground state so; the heterojunction for excitons splitting should be within the excitons diffusion limit (i.e., as close as possible to the photo generation point) [4] Osmosis is a subset of diffusion. Osmosis is a special type of diffusion. The definition of Osmosis is: the diffusion of water through a semi-permeable membrane Diffusion of Innovations, by Everett Rogers (1995). Reviewed by Greg Orr. March 18, 2003 Much has been made of the profound effect of the tipping point, the point at which a trend catches fire - spreading exponentially through the population. The idea suggests that, for good or bad, change can be promoted rather easily in a social system through a domino effect By definition, osmosis is the movement of any solvent through a selectively permeable membrane into an area of higher solute concentration, the result of which will be an equalizing of solute concentration on either side of the membrane

Diffusion - Lexikon der Biologie

DIFFUSION : Définition de DIFFUSION

Diffusion Profile. The High Definition Render Pipeline (HDRP) stores most subsurface scattering settings in a Diffusion Profile Asset. You can assign a Diffusion Profile Asset directly to Materials that use Subsurface Scattering.. To create a Diffusion Profile, navigate to Assets > Create > Rendering > Diffusion Profile.To use it, open your HDRP Asset and add it to the Diffusion Profile List.

Diffusion erklärt! Funktion, Aufgabe, Krankheiten

Folge 011 - Brownsche Molekularbewegung: Diffusion und Osmose

* Diffusion - Biologie - Online Lexiko

  1. What is diffusion? - BBC Bitesiz
  2. Diffusion schnell erklärt! - YouTub
  3. Die Diffusion Biologie Pflanzen und Pilze - YouTub
  4. Diffusion - Kompaktlexikon der Biologie
  5. Diffusion: définition et explications - AquaPortai
  6. Synonymer till diffusion - Synonymer
  7. Différence entre la diffusion simple et la diffusion
Osmose — Landesbildungsserver Baden-WürttembergHyperton | Hypertonisch

Diffusion facilitée — Wikipédi

Définition des cancers (caractéristiques des cellulesOsmose – Biologie – sofatutorBiophysique: définition et explications
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