The lyre bird, not only mimics the calls of other birds, buy also man made noises such as cameras, saws and chainsaws, in an attempt to impress potential mates. David Attenborough narrates the above clip.
Related: Friday Fun: Bird Using Bait to Fish – Leafhopper Feeding a Gecko – Backyard Wildlife: Raptor – Bdelloid Rotifers Abandoned Sex 100 Million Years Ago
Florence Nightingale: The passionate statistician
Applied statistics is a tool available to all to achieve great improvement. Unfortunately it is still very underused. As George Box says: applied statistics is not about proving a theorem, it’s about being curious about things. The goal of design of experiments is to learn and refine your experiment based on the knowledge you gain and experiment again. It is a process of discovery.
Related: articles on applied statistics – The Value of Displaying Data Well – Statistics for Experimenters – Playing Dice and Children’s Numeracy – Quality, SPC and Your Career – Great Charts
Image of cell size gadget from University of UtahThe Genetic Science Learning Center, University of Utah has a nice web gadget that lets you zoom in on various cells to see how large they are compared to each other. Above see a red blood cell, x chromosome, baker’s yeast and (small) e-coli bacterium.
A red blood cell is 8 micron (micro-meter 1/1,000,000 of a meter). E coli is 1.8 microns. Influenza virus is 130 nanometers (1/1,000,000,000 a billionth of a meter). Hemoglobin is 6.5 nanometers. A water molecule is 275 picometers (1 trillionth of a meter).
Related: Red Blood Cell’s Amazing Flexibility – Hemoglobin as Art – Atomic Force Microscopy Image of a Molecule – Nanotechnology Breakthroughs for Computer Chips
Engineering careers with experiences
They think it’s “someone who is half-robot super genius” and “way more interested in machinery or circuitry than people.”
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Part of the misunderstanding starts with adults who influence future workers. The survey found that only 20 percent of parents have encouraged or will encourage their children to consider an engineering career. More girls say their parents are likely to encourage them to become an actress than an engineer.
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The National Science Foundation estimates a shortage of 70,000 engineers by 2010. To reverse the trend, we need to apply the engineer’s biggest tool: logic.
Based on the title of this blog you can guess I am in favor of engineers. Engineers can find great rewards in their careers from interesting work to high pay and leadership positions. In the modern world you need an understanding of science and engineering just to be a literate member of society.
Related: What is an Engineer? – The Importance of Science Education – Engineering the Future Economy – What do Science and Engineering Graduates Do?
Young engineer launches stair aid by Geoff Adams-Spink
She told BBC News that she was inspired to create the device for the father of one of her teachers who had had a stroke. She won an award for her idea and has now set up a company to sell it. The StairSteady is a horizontal rail at 90 degrees to the wall or banister that people can hold on to as they go up or down stairs.
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The invention was then entered for the Young Engineer for Britain competition and won first prize.
Great stuff. Innovation doesn’t have to be amazing technology. Finding solutions that make people’s lives better is the key. And then showing some entrepreneurship is great, Ruth setup her company when she was 16. I wish her luck.
Related: posts on engineers – Engineers Should Follow Their Hearts – Automatic Dog Washing Machine – Entrepreneurial and Innovative Engineers – Microfinancing Entrepreneurs
But it turns out the picture is far more complicated than that. In recent years, biologists have discovered a myriad of other molecules that fine-tune this process, including several types of RNA (ribonucleic acid). Through a naturally occurring phenomenon known as RNA interference, short strands of RNA can selectively intercept and destroy messenger RNA before it delivers its instructions.
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Double-stranded RNA molecules called siRNA (short interfering RNA) bind to complementary messenger RNA, then enlist the help of proteins, the RNA-induced silencing complex. Those proteins cleave the chemical bonds holding messenger RNA together and prevent it from delivering its protein-building instructions.
This article from MIT is one, of many, showing MIT’s commitment to science education of the public. Good job, MIT.
Related: Antigen Shift in Influenza Viruses – Posts explaining scientific principles and concepts – DNA Passed to Descendants Changed by Your Life – Why Does Hair Turn Grey as We Age? – Amazing Science: Retroviruses
Open access paper: Migration of Contaminated Soil and Airborne Particulates to Indoor Dust.
Indoor dust is a mixture of soil tracked into a residence, particulate matter derived from ambient outdoor air, and importantly, organic matter. Indoor dust is about 40% organic matter by weight in residential housing. Particles tracked into a residence are redistributed on floor surfaces account for over 60% of the dust mass on floors.
Related: Untidy Beds May Keep us Healthy – Open Science: Explaining Spontaneous Knotting – Electron Filmed for the First Time – Waste from Gut Bacteria Helps Host Control Weight
This webcast shows iRobot’s (Romba maker) prototypes for soft flexible robots. The robot uses “jamming” to morph the body which allows animal like locomotion and the ability to reshape the body to squeeze through small and difficult to navigate locations.
Related: Caterpillar-Inspired Robot – Friday Cat Fun #8: Cat Ridding a Roomba – iRobot Gutter Cleaning Robot – Moth Controlled Robot – Self Re-assembling Robots
UCLA Professor Aydogan Ozcan‘s invention (LUCAS) enables rapid counting and imaging of cells without using any lenses even within a working cell phone device. He placed cells directly on the imaging sensor of a cell phone. The imaging sensor captures a holographic image of the cells containing more information than a conventional microscope. The CelloPhone received a Wireless Innovations Award from Vodafone
The CelloPhone Project aims to develop a transformative solution to these global challenges by providing a revolutionary optical imaging platform that will be used to specifically analyze bodily fluids within a regular cell phone. Through wide-spread use of this innovative technology, the health care services in the developing countries will significantly be improved making a real impact in the life quality and life expectancy of millions.
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For most bio-medical imaging applications, directly seeing the structure of the object is of paramount importance. This conventional way of thinking has been the driving motivation for the last few decades to build better microscopes with more powerful lenses or other advanced imaging apparatus. However, for imaging and monitoring of discrete particles such as cells or bacteria, there is a much better way of imaging that relies on detection of their shadow signatures. Technically, the shadow of a micro-object can be thought as a hologram that is based on interference of diffracted beams interacting with each cell. Quite contrary to the dark shadows that we are used to seeing in the macro-world (such as our own shadow on the wall), micro-scale shadows (or transmission holograms) contain an extremely rich source of quantified information regarding the spatial features of the micro-object of interest.
By making use of this new way of thinking, unlike conventional lens based imaging approaches, LUCAS does not utilize any lenses, microscope-objectives or other bulk optical components, and it can immediately monitor an ultra-large field of view by detecting the holographic shadow of cells or bacteria of interest on a chip. The holographic diffraction pattern of each cell, when imaged under special conditions, is extremely rich in terms of spatial information related to the state of the cell or bacteria. Through advanced signal processing tools that are running at a central computer station, the unique texture of these cell/bacteria holograms will enable highly specific and accurate medical diagnostics to be performed even in resource poor settings by utilizing the existing wireless networks.
This is another great example of engineers creating technologically appropriate solutions.
Related: Better health through your cell phone – Mobile Phone-based Vehicle Anti-theft System – Appropriate Technology: Self Adjusting Glasses – Engineering a Better World: Bike Corn-Sheller – The Engineer That Made Your Cat a Photographer – Freeware Wi-Fi app turns iPod into a Phone
Kelly has taken this task one step further. When people drop paper into the water she hides it under a rock at the bottom of the pool. The next time a trainer passes, she goes down to the rock and tears off a piece of paper to give to the trainer. After a fish reward, she goes back down, tears off another piece of paper, gets another fish, and so on. This behaviour is interesting because it shows that Kelly has a sense of the future and delays gratification. She has realised that a big piece of paper gets the same reward as a small piece and so delivers only small pieces to keep the extra food coming. She has, in effect, trained the humans.
Her cunning has not stopped there. One day, when a gull flew into her pool, she grabbed it, waited for the trainers and then gave it to them. It was a large bird and so the trainers gave her lots of fish. This seemed to give Kelly a new idea. The next time she was fed, instead of eating the last fish, she took it to the bottom of the pool and hid it under the rock where she had been hiding the paper. When no trainers were present, she brought the fish to the surface and used it to lure the gulls, which she would catch to get even more fish. After mastering this lucrative strategy, she taught her calf, who taught other calves, and so gull-baiting has become a hot game among the dolphins…
Too bad for the poor gulls but this is pretty cool. Plus it serves gulls right, one stole my breakfast a few years ago when I was down in Florida.
Related: Dolphins Using Tools to Hunt – Friday Fun: Dolphins Play with Air Bubble Rings – Bird Using Bait to Fish – Dolphin Rescues Beached Whales – When Performance-related Pay Backfires