A direct methanol alkaline fuel cell using an anion exchange membrane as the separator. direct methanol alkaline Direct Methanol Alkaline Fuel Cell Color- Anion Exchange Membrane
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A ball-and-stick model structure of non-polar, hydrophobic amino acid isoleucine (Ile, I). Carbon in blue-grey, oxygen in red, nitrogen in green, hydrogen in silver. Drawn in Inkscape. amino acid amino acid Isoleucine (amino acid)
A ball-and-stick model structure of non-polar, hydrophobic amino acid valine (Val, V). Carbon in blue-grey, oxygen in red, nitrogen in green, hydrogen in silver. Drawn in Inkscape. amino acid amino acid Valine (amino acid)
A ball-and-stick model structure of polar amino acid asparagine (Asn, N). Carbon in blue-grey, oxygen in red, nitrogen in green, hydrogen in silver. Drawn in Inkscape. amino acid amino acid Asparagine (amino acid)
A ball-and-stick model structure of polar amino acid threonine (Thr, T). Carbon in blue-grey, oxygen in red, nitrogen in green, hydrogen in silver. Drawn in Inkscape. amino acid amino acid Threonine (amino acid)
A ball-and-stick model structure of basic (positively-charged) amino acid histidine (His, H). Carbon in blue-grey, oxygen in red, nitrogen in green, hydrogen in silver. Drawn in Inkscape. amino acid amino acid Histidine (amino acid)
A ball-and-stick model structure of non-polar, hydrophobic amino acid tryptophan (Trp, W). Carbon in blue-grey, oxygen in red, nitrogen in green, hydrogen in silver. Drawn in Inkscape. amino acid amino acid Tryptophan (amino acid)
A ball-and-stick model structure of polar, hydrophobic amino acid tyrosine (Tyr, Y). Carbon in blue-grey, oxygen in red, nitrogen in green, hydrogen in silver. Drawn in Inkscape. amino acid amino acid Tyrosine (amino acid)
A ball-and-stick model structure of acidic (negatively-charged) amino acid glutamic acid (Glu, E). Carbon in blue-grey, oxygen in red, nitrogen in green, hydrogen in silver. Drawn in Inkscape. amino acid amino acid Glutamic acid (amino acid)
A ball-and-stick model structure of non-polar amino acid proline (Pro, P). Carbon in blue-grey, oxygen in red, nitrogen in green, hydrogen in silver. Drawn in Inkscape. amino acid amino acid Proline (amino acid)
Top-down view of a single-seater space craft. The craft is grey with yellow markings. Its hull consists of polygonal pieces. space science fiction vehicle Single-Seater Space Craft
The structure (abbreviated) of the polysaccharide cellulose, a major structural component of plant cell walls, wood. It is just an unbranched polymer of beta-glucose. Only a small fragment of the potentially infinite polymer is shown. Drawn in Inkscape. cellulose polysaccharide sugar Cellulose
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A radial phylogenetic tree (i.e. a genealogy of species) drawn with Dendroscope and tweaked in Inkscape. (for some reason a thumbnail has not been created, so there is nothing to see here; click on the white area and the drawing should open though). tree phylogeny phylogenetic Phylogeny
Many people are puzzled by the word 'fracking' so I've tried to explain it in very simple terms, avoiding technical terms and jargon. This is a controversial technology but I've tried hard to present both sides of the picture, without reference to my own personal opinions. The result is a mini-presentation including a graphic and explanatory panels - rather like a poster. fracking environment shale ga What is fracking ?
Female doctor with medicine injection ready to use in a patient. It’s a perfect vector to use in vaccination campaigns. Under Commons 4.0. Attribution License doctor female vaccination Female doctor with medicine injection
Technology element set of 4 different computer devices. A floppy disc, hard disc drives pilled on top of each other, a printer and computer chip. Enjoy technology computer device Computer Technology Device Pack
Vector graphics of many different icons and stylized symbols. Silhouettes of a gearwheel, video game controller, snowflake, traffic cone, pie chart, flask, large ship, sign reading , u"”": ufor sale”, atom diagram and an ancient Greek building. Free vectors for your icons and company logos icon sign snowflake Various Icons Set
Science vector footage of a flask. Transparent glass vessel, rounded bottom part, long neck, brightly colored bubbling liquid inside the flask and clouds of smoke coming out of the top. Free vector for your science, chemistry and experiments visuals. Graphics for posters and ads. Flask Graphics by Acolagui glass clouds science Chemical Reaction Graphics
Science fiction vector graphics of evil aliens. Silhouettes of extraterrestrial warriors wearing protective armor and holding large weapons. Aliens with different body shapes and positions to create science fiction, futuristic and alien invasion visuals. Free vectors for posters and T-shirt prints silhouette silhouettes monsters Alien Silhouettes