genealogypods.com

Archive for the ‘Science’ Category

A chip is a small wingless insect common. The fleas that live on Blood sucking external parasites in the blood of mammals and birds that live there. There are different types of chips, the most common are:
– Dog Fleas
– Dog Fleas
– Chip North rat
– Chip Oriental rat

It is rare that damage their host flea, in most cases, they are just nuisances. However, there is a problem if the host is suffering from an allergic reaction to flea saliva become. Places where fleas bite usually visible as slightly raised, itchy spot swolled have a single puncture in the middle.

It is important to note that compared to what I said above, fleas can transmit diseases. This scenario is a rare disease, but not the case, and an example is the bubonic plague, where the disease has been transmitted between rodents and humans. Is not it enough murine typhus, and even some cases of tapeworms transmitted by fleas.

Fleas are small insects busy and will pass through a complete life cycle, from egg to adult in as short as two weeks, as long as eight months, depending on environmental conditions. In general, after a blood meal, a female flea lays eggs, lives about 15 per day to about 600 in each. The eggs are usually laid on the host and often drop out of the host. This flea eggs take two days to two weeks to hatch.

As modern society searches around for alternative energy sources, wind farms are to be silent forever. However, there are limitations regarding wind farms as major energy alternatives.

Wind Farms – Limitations Platforms energy

Wind energy is a platform attractive energy compared to fossil fuels. The process works by using the energy in the wind as a method of generating electricity. The current method is similar to hydro, wind, but with water used instead. Wind turbines catch the wind, which turns the blades. This rotational movement of the cranks a generator that produces electricity. The electricity is stored in batteries or the power grid, a service program. Walla, you have the power!

use wind power for localized needs has been around a long time. The Persians are probably the first to use in order to turn grain grinding wheels are. In modern times, is the sole purpose of generating electricity. On a large scale, this means wind farms.

Wind farms are simply large collections of turbines in a defined area. If you ever east of San Francisco have gone, you’ve seen wind farms along the road. While it is both exciting and environmentally friendly source of energy for electricity generation, is a wind farm has definite limits.

The biggest limitation of wind farms is the electricity produced. In other words, they do not produce large quantities, at least not on the scale required in most cities of developed countries. Of course, each site is different, but the wind is simply not a constant phenomenon in most places. Even if it is, the number of turbines to generate enough energy required to produce a city are amazing. This leads naturally to a second term.

Wind farms must cover a lot of physical space to produce large quantities of electricity. In many industrialized countries, the space at a premium. Due to the cost of purchase of land for wind farms is prohibitive. The problem is, however, loses its grain of offshore wind farms are becoming more frequent.

For some of the limitations of wind farms are cankers. Personally, I think they are fascinating and have an artistic aspect. Others, however, did not really agree. The proposed Cape Wind offshore wind farm has met with massive resistance precisely for this reason.

The limits of wind farms are fairly significant at this point in time. As technology and new approaches, such as offshore wind farms to come to the forefront, these problems may fall by the wayside.

• Perfect Perfume – a video for Valentine’s Day – A bit of fun for Valentine's Day as the team combinesto make our very own "perfect perfume"!
• The lingering risk of thirdhand smoke – As Dubowski suggests, the notion of thirdhand smoke putatively being hazardous to health is controversial. Research in the late 2000s alluded to the potential problem of this form of pollution but ongoing public and academic scrutiny has not yet resolved the issue. Dubowski's work does provide a chemical basis for a possible risk but does not prove that the risk is substantial or otherwise. However, what is certain is that firsthand smoke is directly hazardous to the health of the smoker and recent evidence suggests that it could cause genetic damage almost the instant tobacco smoke is inhaled.
• How marijuana works – Marijuana is the buds and leaves of the Cannabis sativa plant. This plant contains more than 400 chemicals, including delta-9-tetrahydrocannabinol (THC), the plant's main psychoactive chemical. THC is known to affect our brain's short-term memory. Additionally, marijuana affects motor coordination, increases your heart rate and raises levels of anxiety. Studies also show that marijuana contains cancer-causing chemicals typically associated with cigarettes. In this article, you will learn about marijuana, why this drug is so popular and what effects it has on your mind and body.
• Tweeting the lab – The question of how to build an efficient and useable laboratory recording system is fundamentally one of how much information is necessary to record and how much of that can be recorded while bothering the researcher themselves as little as possible.
• Kepler discovers a mini solar system – Using NASA’s orbiting Kepler observatory, astronomers have found a complete solar system of six planets orbiting a sun-like star… and it’s really weird: five of the six planets huddle closer to their star than Mercury does to the Sun!
• Triclosan – should be used medically and banned in personal products – Triclosan is a really useful material with antibacterial and antiinflammatory properties but it should be banned from use in personal care ingredients.
• Sciencebase Presents… – Nerdy, geeky, dorky science videos. Classic stuff, will be loved by nerds, geeks and dorks everywhere!
• JournalTOCs – 15,204 journals (including 1,676 Open Access journals) collected from 706 publishers. Very easy to browse and to create custom feeds for specific subject areas e.g. http://www.journaltocs.hw.ac.uk/api/articles/chemistry Just swap out "chemistry" for your chosen subject.

From David Bradley Science Writer – Eight science picks

An octet of science news is a post from: Sciencebase Science Blog

A friend of mine, András Paszternák, runs a thriving online nanotech community called Nanopaprika (he’s in Hungary, hence the name). He started the community (for which I am a Scientific & Advisory Board member) when he was doing his PhD and it has grown rapidly into one of the most targeted niches on the Web with lots of partnerships across the nano community in academia, industry and publishing. Nevertheless, András is impatient and dissatisfied with the pace of growth. He wants to reach out to the whole community a mere fraction of which (at 4000+ members from 70 countries) he has so far engaged.

“Nanopaprika is really not about numbers,” András told me. “I was also happy with first 10, 100, 1000 members. The story is about active members, about grad students who find a job, about industry people who share information about new products, about teachers who develop educational activities.”

Of course, each milestone is an achievement, but each milestone also means that the next milestone is further to go and there is always a sense of creeping dissatisfaction when one looks at the analytics. After all, there are other specialist online communities that are much bigger. Mendeley, ResearchGate, etc all have at least an order of magnitude greater membership, although it would be interesting to know how many are active too. Then there are the learned societies that have double that again or four, five, six times as many members. And if you’re talking true count envy, Facebook had 500 million members last year and has added another 100 million since.

I remember when I reached by first 100 Twitter followers, I was so pleased, but immediately I was thinking about the next big round number. 200, 300, 400 didn’t seem such a big deal. 500 was nice but reaching 1000 was better. I didn’t even notice when I got to 1000+100, then 1200, then 1300. 1500 wasn’t too bad, but I really wanted to get to 2000. Once I’d passed that point, 3000 wasn’t even in my sights, I wanted to get to 5000 as quickly as possible.

Growth seems to be linear, with the occasional spike when someone big retweets one of your links. The same happens with all communities, growth is rarely exponential unless your early adopters are incredibly well connected and successfully spread the word to their vast networks, at which point you can pass a tipping point and see runaway growth.

Smaller spikes to occur. They have happened several times since I joined Twitter in June 2007, but after the spikes, the growth rate seems to revert to the same angle of upward incline on the chart. 6000 came and went, as did 7000, then 8000. I currently have 9272 followers on Twitter and each day acquire maybe a dozen or so new followers.

TwitterCounter.com tells me that tomorrow I will have reached 9285. It also predicts that within three weeks I will have 9500. But, in six month’s time, or thereabouts I should have 10,000 followers.

So, what’s the next milestone after that? 20,000? 30,000? 100,000? At this rate that will take me 20 years. Is anyone still going to be tweeting five years, let alone 20? Surely, I’ll have found something better to do by then…

Each milestone is an achievement, but each milestone also means that the next milestone is further to go.

By the way, I do know that Twitter is not simply about accumulating numbers. I do know that a lot of the “people” that are following me are not actively using Twitter. Lots of them are automated “bot” and spammer accounts and I really ought to remove those and block them.

I also know that at the core there are a few dozen friends and contacts with whom I regularly trade tweets and links, with whom I direct message (DM) and with whom I even have conversations via email, messaging, SMS, the phone and even in the real world.

It’s entertaining, it’s a chance to share what you know and learn about what you don’t. It’s a chance, vaguely, to earn a crust. It’s not really about the numbers. While every follower matters, there are only a limited number that count.

Count envy, satisfaction and achievement is a post from: Sciencebase Science Blog