3:47
Lignin Extraction
Brett Diehl, grad student in Agricultural and Biological Engineering at Penn State, explai...
published: 19 Aug 2013
Lignin Extraction
Lignin Extraction
Brett Diehl, grad student in Agricultural and Biological Engineering at Penn State, explains the concept and process of extracting lignin from wood in the research laboratory.- published: 19 Aug 2013
- views: 165
10:28
Plant Cells: Crash Course Biology #6
Hank describes why plants are so freaking amazing - discussing their evolution, and how th...
published: 05 Mar 2012
author: crashcourse
Plant Cells: Crash Course Biology #6
Plant Cells: Crash Course Biology #6
Hank describes why plants are so freaking amazing - discussing their evolution, and how their cells are both similar to & different from animal cells. Like C...- published: 05 Mar 2012
- views: 197603
- author: crashcourse
6:26
Simplifying Lignin
http://simplifying-lignin.scientificstation.com....
published: 15 May 2010
author: ScientificStation
Simplifying Lignin
Simplifying Lignin
http://simplifying-lignin.scientificstation.com.- published: 15 May 2010
- views: 2048
- author: ScientificStation
2:50
Creation of a Lignin-based Film to Shield Cell Phone Radio Waves
An Interview with Phoebe Li University of British Columbia, member of the LignoWorks Netwo...
published: 16 May 2013
author: FIBRENETWORK2013
Creation of a Lignin-based Film to Shield Cell Phone Radio Waves
Creation of a Lignin-based Film to Shield Cell Phone Radio Waves
An Interview with Phoebe Li University of British Columbia, member of the LignoWorks Network. © paperadvance 2013.- published: 16 May 2013
- views: 116
- author: FIBRENETWORK2013
7:41
Hydrogéologie - Traçage à la fluoresceïne de la perte du lac de Lignin
Dans le massif du Coyer (04), les eaux du lac de Lignin se perdent en profondeur. Où vont ...
published: 22 Nov 2013
Hydrogéologie - Traçage à la fluoresceïne de la perte du lac de Lignin
Hydrogéologie - Traçage à la fluoresceïne de la perte du lac de Lignin
Dans le massif du Coyer (04), les eaux du lac de Lignin se perdent en profondeur. Où vont ces eaux ? Vers le Verdon, le Coulomp ou la Vaïre ? Une coloration des eaux souterraines a permis de répondre à cette question...- published: 22 Nov 2013
- views: 359
2:22
UK-NSF-EFRI 2011 "Fuels From Lignin"
The University of Kentucky with support from the National Science Foundation's Emerging Fr...
published: 25 Feb 2011
author: UKAgriculture
UK-NSF-EFRI 2011 "Fuels From Lignin"
UK-NSF-EFRI 2011 "Fuels From Lignin"
The University of Kentucky with support from the National Science Foundation's Emerging Frontiers in Research and Innovation has undertaken the challenge of ...- published: 25 Feb 2011
- views: 1400
- author: UKAgriculture
3:06
Why We Love The Smell Of Old Books
There are certain strange smells that always seem to get us--old books, summer rain, gasol...
published: 24 Jun 2013
author: DNews
Why We Love The Smell Of Old Books
Why We Love The Smell Of Old Books
There are certain strange smells that always seem to get us--old books, summer rain, gasoline....?! While they can be attached to fond memories, there's more...- published: 24 Jun 2013
- views: 26964
- author: DNews
3:17
Lignin Staining - Amrita University
For more Information @ http://amrita.vlab.co.in/index.php?sub=3&brch;=188∼=778&cnt;=1 ▷ A...
published: 18 Nov 2011
author: Amrita Vlab
Lignin Staining - Amrita University
Lignin Staining - Amrita University
For more Information @ http://amrita.vlab.co.in/index.php?sub=3&brch;=188∼=778&cnt;=1 ▷ Amrita Virtual Lab Project website http://amrita.vlab.co.in ▷ Lear...- published: 18 Nov 2011
- views: 2176
- author: Amrita Vlab
1:28
2011 August - lignin biofuel screening and loading process
http://www.linasagro.lt Loading place http://maps.google.com/maps?f=d&source;=s_d&saddr;=Bio...
published: 11 Aug 2011
author: Lignineko
2011 August - lignin biofuel screening and loading process
2011 August - lignin biofuel screening and loading process
http://www.linasagro.lt Loading place http://maps.google.com/maps?f=d&source;=s_d&saddr;=Biochemik%C5%B3+gatv%C4%97&daddr;=&hl;=en&geocode;=FdAdSwMdfoBuAQ&mra;=ls&...- published: 11 Aug 2011
- views: 1049
- author: Lignineko
0:46
Biofuels Patent Issued for Lignin-Solvent Process
(3BL Media) July 17, 2012 - A patent that opens the door for the creation of biofuels from...
published: 19 Jul 2012
author: 3BL Media
Biofuels Patent Issued for Lignin-Solvent Process
Biofuels Patent Issued for Lignin-Solvent Process
(3BL Media) July 17, 2012 - A patent that opens the door for the creation of biofuels from abundantly available plant fiber has been issued to researchers at...- published: 19 Jul 2012
- views: 298
- author: 3BL Media
0:59
CyclOx Sustainable Transport Fuel: Production from Lignin
2012 Peer-reviewed publications: Zhou, L., Boot, M.D. & Goey, L.P.H. de (2012). The effect...
published: 04 Dec 2012
author: ProgressionIndustry
CyclOx Sustainable Transport Fuel: Production from Lignin
CyclOx Sustainable Transport Fuel: Production from Lignin
2012 Peer-reviewed publications: Zhou, L., Boot, M.D. & Goey, L.P.H. de (2012). The effect of the position of oxygen group to the aromatic ring to emission p...- published: 04 Dec 2012
- views: 392
- author: ProgressionIndustry
Vimeo results:
10:29
Lacs de Lignins
Randonnée VTT du 4/8/2012....
published: 06 Aug 2012
author: Shostag
Lacs de Lignins
Randonnée VTT du 4/8/2012.
5:35
The Chemistry of Wood
Visit Glasgow University to find out about the chemistry of softwood (species like spruce,...
published: 02 Oct 2008
author: Dan Ridley-Ellis
The Chemistry of Wood
Visit Glasgow University to find out about the chemistry of softwood (species like spruce, pine and fir). Discover what makes up the rings and why the tree changes the properties of the wood it grows as it gets older. The study of the material properties of wood is called "wood science".
You can see more videos like this at http://cte.napier.ac.uk/firrs
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Transcript
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Although this might not look like a typical chemistry laboratory this is the chemistry department of Glasgow university. We’re here to find out about the chemistry of wood.
Each year a tree grows a new ring on the outside just beneath the bark. The middle part - or pith - where the rings have small diameter was made by the tree when it was young. The larger rings on the outside, were made when the tree was older.
Each ring has two parts. These parts are called early wood and late wood. The early wood is grown early in the summer. Here the cells are large and the cell walls are thin which means this part of the wood is light in colour and has low density. In late wood, the cells are smaller and have thicker cell walls meaning this part of the wood is dark in colour and is more dense.
The chemistry of the cells is important because it determines the properties of the wood and its fibres. It is the alternation of early and late wood that gives the timber its grain pattern one of the things that makes it look attractive.
This is an x-ray densitometer. It’s used to make measurements of the density of the wood in the different rings. These thin strips of wood contain the rings from the middle of the tree to the bark - which represent the whole life of the tree.
The denser wood absorbs more of the x-rays - just like bones do in a medical x-ray. In this machine the beam of x-rays is very fine - like a needle - so it can take very precise measurements of small areas.
Density changes within a ring and generally increases from the middle of the tree to the bark. The late wood parts of the ring show up as peaks in the density curve.
Wood is mainly made from cellulose which is a type of carbohydrate. Cellulose is made up of long chains of Carbon, Hydrogen and Oxygen atoms and helps to give the wood its strength.
The wood also contains lignin - a type of natural plastic - which protects the wood and also binds together the cellulose chains to give the cell walls rigidity. Understanding how the cellulose and lignin work together is important for understanding the properties of the wood.
This is an infra-red microscope which is used to study the cellulose and lignin in the different parts of the cell structure. The more vertical the chains of cellulose in the tree, the stiffer and stronger the wood. In the middle of the tree the chains go round and round in a spiral
so the middle bit of the tree is less stiff and not so strong. Towards the outside of the tree the cellulose chains are more vertical making this part of the wood stronger and stiffer.
A young tree needs to be flexible to it can bend with the wind without breaking but as it gets older and larger it must become stiffer to avoid being blown over. That's why it grows stronger and stiffer wood the older it gets.
These two pieces of wood were cut from the same tree one cut from the wood close to the middle of the tree - the pith and one cut from the wood close to the bark. The piece from the pith is more flexible than the piece from the edge. It’s easier to bend with my fingers.
The wood in the middle of the tree is less dense because it contains a lot of air and so this part of the tree is good for making insulation. The wood on the outside of the tree is good for building, because it is stronger and stiffer.
In a standing tree, the wood contains water rather than air the water it needs to stay alive. Some of the water is so tightly linked to the molecules in the cell wall that when we take the wood out of the tree and dry it - the wood shrinks - which is why this piece has split.
Different parts of the wood shrink by different amounts. When one side of the timber shrinks more than the other - the piece bends. Understanding and limiting this distortion is important for saw millers because bent pieces of wood are not so useful.
There are also some chemicals in the wood that don't have a structural function. These are particularly common in knots - which is why they are a darker colour. Here at Glasgow University they are researching into new uses for these natural chemicals such as in medicine.
These are Soxhlet extractors which are used to take the useful chemicals out of the wood so they can be studied. The general name for these chemicals is extractives.
This is a high performance liquid chromatograph which is used to separate the extractives and analyse their chemical composition.
By better understanding the chemistry of wood it will be possible for foresters to grow trees with improved properties for the various
1:12
template.mud ♻ PWR CLASSICS
For one night PWR transformed Stadium into a distribution center for 1000 posters.
Pictu...
published: 13 Nov 2012
author: PWRSHARE.INFO
template.mud ♻ PWR CLASSICS
For one night PWR transformed Stadium into a distribution center for 1000 posters.
Picture this before your mind's eye: A white painted room bathing in germicidal blueish light. In the center of the room: a pile of newspaper glowing slightly: the printed surface smudged by ink stained fingers. On opposing walls: front and back of a sheet harshly illuminated by halogen lights. All imperfections revealed. Text to be read but TLTR right now. A vaguely contemporary rhythmic pulsing from a pair of speakers in the corner: the bass not strong enough to be felt. A number of people have dragged their bodies to this specific location in order to lay their hands on this piece of processed softwood. Perhaps they will hang it on the wall of their sub-sub-leased room: watch it age: become yellowed when the lignin react with the morning sunlight. Or perhaps they will find it's not worth the investment of strength to carry the pile of paper home and instead leave it in the subway station.
This is the first in a series of printed interventions: pumping a classic back into circulation.
♻ ♻ ♻ ♻ ♻ ♻ ♻ ♻ ♻ ♻ ♻
Nursery school space music
Playing from laptop speakers
On the table
Two 1 € take away fruit cups
With a forest green recyclable fork
I pick the first fruit
The first fruit
The first sliced fruit
Is a fig
A sweet’n’soft fig
With water repellent skin
Sliced in pieces
In an almost sexual act
Now each piece
A representation of the whole
Of the whole fig
The first fruit
Is the center piece
Visually attractive
Placed between lid
And fruit pieces
Resting below
I was thinking about nurses and how they do all the hardcore work in hospitals. When I was in hospital for three days, the only people I saw were nurses. They were so fantastic and did such a great job. True heroes! Not science as heroic quest, but their protective multitude as a whole: encompassing and saving many organisms in the building. Their erotic touch applied to our bodies: the body of nature. Like they were giving back holiness to the secularized.
—Verena Gillmeier
♻ ♻ ♻ ♻ ♻ ♻ ♻ ♻ ♻ ♻ ♻
PWR is a publishing house located in the €uro-zone.
www.pwr-hou.se
Youtube results:
0:56
Lignin flame
Palestra apresentada por Niklas Berglin (Innventia): "Biofuels in lime kilns"...
published: 15 Oct 2010
author: revistaopapel
Lignin flame
Lignin flame
Palestra apresentada por Niklas Berglin (Innventia): "Biofuels in lime kilns"- published: 15 Oct 2010
- views: 284
- author: revistaopapel
7:32
Donna's Acid and Lignin Free Paperbags
These paper bags are made from 12'' X 12'' designer paper hence rendering it acid and lign...
published: 10 Apr 2010
author: PrimaDonnaCraft
Donna's Acid and Lignin Free Paperbags
Donna's Acid and Lignin Free Paperbags
These paper bags are made from 12'' X 12'' designer paper hence rendering it acid and ligning free. They are a perfect size for paper bag albums and are arch...- published: 10 Apr 2010
- views: 710
- author: PrimaDonnaCraft
3:32
LigninExtraction2
Brett Diehl, grad student in Agricultural and Biological Engineering at Penn State, explai...
published: 27 Sep 2013
LigninExtraction2
LigninExtraction2
Brett Diehl, grad student in Agricultural and Biological Engineering at Penn State, explains the second phase of extraction of lignin from wood in the lab- published: 27 Sep 2013
- views: 123