This document describes the Bandalong Litter Trap, a device that prevents litter from entering waterways and oceans. It notes that 80% of marine debris comes from land and plastic pollution is a major problem, entangling and being ingested by wildlife. The litter trap has been successfully used for over 15 years worldwide, removing tons of trash annually. It creates awareness about pollution issues and inspires community involvement in cleanups. The litter trap is a proven solution that forms partnerships to address the growing problem of ocean debris.
Plastic pollution is accumulating in oceans worldwide to form "plastic soup", threatening marine life and entering the food chain. The production and consumption of plastics is unsustainable and must shift to alternative materials and innovative processes. The Plastic Soup Foundation aims to address this problem through international cooperation, projects with companies, and spreading awareness of sustainable solutions.
In deze presentatie worden verschillende uitdagingen rondom plastic afval en recycling geïdentificeerd. Daarnaast worden oplossingen aangedragen voor dit probleem. Deze presentatie is toegankelijk voor mensen zonder technische achtergrond.
Plastic poses significant environmental problems. It is made from polymers that do not degrade and can persist in the environment for centuries. When plastic litter ends up in oceans and waterways, it kills over 100,000 marine animals every year either through ingestion or entanglement. Plastic bag litter also pollutes landscapes worldwide. While recycling aims to reduce plastic waste, the recycling process itself can release toxic fumes and harm workers. Small actions like using reusable tote bags and reducing single-use plastic can help address this global issue. Government regulations and individual responsibility are both important to lessen the environmental impact of plastics.
The document discusses the history and rise of plastic from its invention in the 1860s to modern day uses and environmental concerns. It traces some of the key plastics developed like Bakelite, vinyl, nylon, polyethylene, polyester, and describes how plastics revolutionized industries like packaging, clothing, automobiles. However, it also notes that many plastics are toxic and release dangerous chemicals, contributing to pollution and health issues that environmentalists are now urging regulators to address.
Plastic Pollution Presentation By AnkitMishraAnkit Mishra
This document discusses plastic pollution and management. It provides an introduction to plastics, their composition, types and uses. It then discusses the disadvantages of plastics like releasing pollutants and absorbing toxic chemicals. Statistics about global plastic production and consumption are presented. The document outlines how plastic waste impacts the environment and marine life, forming garbage patches in oceans. It stresses the need for better plastic waste management and measures to curb pollution.
Hi i'am Sean , i study in OUR OWN ENGLISH HIGH SCHOOL .This is a power point on plastics , to help us understand what is a plastic , what are the types of plastic and what harm do they cause to our environment
Plastic poses serious threats to the environment and human life. It pollutes oceans and beaches, kills animals that ingest it, and takes over 1000 years to decompose. The production of plastic involves toxic chemicals like benzene that can cause cancer. Recycling plastic is also hazardous due to toxic fumes. Individual actions like reducing single-use plastic bag use and recycling bags can help address this problem.
Per leerplandoelstelling vindt u precies waar u de theorie en bijhorende opdrachten in de methode kunt vinden. Uiteraard zijn deze links direct aanklikbaar.
This document discusses a researcher's work developing brain-computer interfaces (BCI). It describes measuring EEG brain activity during tasks to extract features and predict the tasks using linear models. The researcher received a grant to validate plans for a BCI company but found no commercial viability. The document also discusses issues with early BCI hardware performance and the researcher's new work on a stress-sensing wearable and matching startups to corporate investors.
This document describes the Bandalong Litter Trap, a device that prevents litter from entering waterways and oceans. It notes that 80% of marine debris comes from land and plastic pollution is a major problem, entangling and being ingested by wildlife. The litter trap has been successfully used for over 15 years worldwide, removing tons of trash annually. It creates awareness about pollution issues and inspires community involvement in cleanups. The litter trap is a proven solution that forms partnerships to address the growing problem of ocean debris.
Plastic pollution is accumulating in oceans worldwide to form "plastic soup", threatening marine life and entering the food chain. The production and consumption of plastics is unsustainable and must shift to alternative materials and innovative processes. The Plastic Soup Foundation aims to address this problem through international cooperation, projects with companies, and spreading awareness of sustainable solutions.
In deze presentatie worden verschillende uitdagingen rondom plastic afval en recycling geïdentificeerd. Daarnaast worden oplossingen aangedragen voor dit probleem. Deze presentatie is toegankelijk voor mensen zonder technische achtergrond.
Plastic poses significant environmental problems. It is made from polymers that do not degrade and can persist in the environment for centuries. When plastic litter ends up in oceans and waterways, it kills over 100,000 marine animals every year either through ingestion or entanglement. Plastic bag litter also pollutes landscapes worldwide. While recycling aims to reduce plastic waste, the recycling process itself can release toxic fumes and harm workers. Small actions like using reusable tote bags and reducing single-use plastic can help address this global issue. Government regulations and individual responsibility are both important to lessen the environmental impact of plastics.
The document discusses the history and rise of plastic from its invention in the 1860s to modern day uses and environmental concerns. It traces some of the key plastics developed like Bakelite, vinyl, nylon, polyethylene, polyester, and describes how plastics revolutionized industries like packaging, clothing, automobiles. However, it also notes that many plastics are toxic and release dangerous chemicals, contributing to pollution and health issues that environmentalists are now urging regulators to address.
Plastic Pollution Presentation By AnkitMishraAnkit Mishra
This document discusses plastic pollution and management. It provides an introduction to plastics, their composition, types and uses. It then discusses the disadvantages of plastics like releasing pollutants and absorbing toxic chemicals. Statistics about global plastic production and consumption are presented. The document outlines how plastic waste impacts the environment and marine life, forming garbage patches in oceans. It stresses the need for better plastic waste management and measures to curb pollution.
Hi i'am Sean , i study in OUR OWN ENGLISH HIGH SCHOOL .This is a power point on plastics , to help us understand what is a plastic , what are the types of plastic and what harm do they cause to our environment
Plastic poses serious threats to the environment and human life. It pollutes oceans and beaches, kills animals that ingest it, and takes over 1000 years to decompose. The production of plastic involves toxic chemicals like benzene that can cause cancer. Recycling plastic is also hazardous due to toxic fumes. Individual actions like reducing single-use plastic bag use and recycling bags can help address this problem.
Per leerplandoelstelling vindt u precies waar u de theorie en bijhorende opdrachten in de methode kunt vinden. Uiteraard zijn deze links direct aanklikbaar.
This document discusses a researcher's work developing brain-computer interfaces (BCI). It describes measuring EEG brain activity during tasks to extract features and predict the tasks using linear models. The researcher received a grant to validate plans for a BCI company but found no commercial viability. The document also discusses issues with early BCI hardware performance and the researcher's new work on a stress-sensing wearable and matching startups to corporate investors.
1. Plastic cel in de maak
Ruud Peters en prof. Jan van Hest
Bio-organische chemie
Radboud Universiteit Nijmegen
1
2. Levende cellen als inspiratie
Complex netwerk van enzymen en
metabolieten reguleert de werking van de
cel.
Verschillende soorten subcompartimenten
(organellen) met elk een eigen functie.
Compartimenten kunnen incompatibele
enzymen of omgevingen ruimtelijk van
elkaar scheiden.
Begrijpen waarom de cel deze
structuur heeft
Gebruiken van deze structuren voor
biomedische toepassingen
2
http://medicalpicturesinfo.com/eukaryotic/
3. Richting kunstmatige compartimenten
Organellen worden omgeven door een membraan van phospholipiden.
Polymeren kunnen een soortgelijk membraan vormen, maar bieden meer
opties tot aanpassing en zijn robuuster.
Geschikt voor het insluiten van medicijnen, eiwitten en DNA.
3
http://www.terrapsych.com/cell.gif
4. Richting kunstmatige compartimenten
Organellen worden omgeven door een membraan van phospholipiden.
Polymeren kunnen een soortgelijk membraan vormen, maar bieden meer
opties tot aanpassing en zijn robuuster.
Geschikt voor het insluiten van medicijnen, eiwitten en DNA.
4
Phospholipiden
500 – 700 Dalton
3-5 nm
Polymeren
5.000 – 10.000 Dalton
~ 20 nm
5. Nanoreactoren
Organellen kunnen een beschermende rol hebben voor hun inhoud, terwijl
deze wel zijn functie behoudt.
Net als in organellen, zitten enzymen vast in de polymere capsules, terwijl
kleine moleculen er wel in en uit kunnen.
Nanoreactor
5
ProductSubstraat 500 nm
Electronen microscopie
6. Capsules remmen de afbraak van ingesloten enzym, waardoor het langer
werkt in een cel.
Minder vaak toedienen van enzymen
Cellen nemen de capsules op door een speciaal peptide op het oppervlak.
Plastic organellen in cellen
6
Enzymen
Peptide voor
opname
Cel Kunstmatig
organel
7. Een werkend plastic organel
Opname in cellen wordt zichtbaar gemaakt met een fluorescente stof in de
capsule. Zonder peptide is er ook geen opname.
Een model enzym in het organel blijft veel
langer actief dan het losse enzym alleen.
7
+peptide -peptide
9. Simpele functies toevoegen
Zowel in het cytoplasma van de cel, als in de organellen vinden reacties
plaats waarbij metabolieten van het ene naar het andere compartiment gaan.
Een drie staps kettingreactie dient als model systeem voor zulke reacties,
waarbij het enzym voor iedere stap zich in een ander compartiment bevindt.
9
11. Plastic cel in actie
11
T= 0 h T= 8 h T= 33 h
Brightfield
14
12. Samenvatting & perspectief
Toepassen van de kunstmatige organellen om biologisch relevante
processen in cellen te herstellen, verbeteren of toe te voegen.
Dynamische celachtige structuren maken die reageren op veranderingen in
hun omgeving of in hun eigen energie kunnen voorzien.
12
Enzymen
Peptide voor
opname
Cel Kunstmatig
organel
13. Dankwoord
Prof. Jan van Hest
Dr. Stijn van Dongen
Prof. Roeland Nolte
Dr. Wouter Verdurmen
Prof. Roland Brock
Dr. Maïté Marguet, Universiteit van Bordeaux
Prof. Sebastien Lecommandoux, Universiteit van Bordeaux
Referenties:
S. F. M. Van Dongen, W. P. R. Verdurmen, R. J. R. W. Peters, R. J. M. Nolte, R. Brock, J. C. M. van Hest,
Angew. Chemie Int. Ed. 2010, 49, 7213 –7216.
R. J. R. W. Peters, M. Marguet, S. Marais, M. W. Fraaije, J. C. M. van Hest, S. Lecommandoux, Angew.
Chemie Int. Ed. 2014, 53, 146–150.
13
Editor's Notes
Kunstmatige organellen kunnen in cellen gebruikt worden om efficiënt biochemische reacties uit te voeren en hun ingesloten enzymen langer actief te houden.
Organellen in een grotere capsule kunnen functioneren als eenvoudige celachtige structuren.