Thursday, August 25, 2011

Chemical Materials

Chemical Materials

Beaker
A beaker is a simple container for stirring, mixing and heating liquids used in many laboratories. Beakers are cylindrical in shape, with a flat bottom and a lip for pouring. Many also have a small "spout" or "beak" to aid the pouring process. Beakers are available from a wide range of sizes, from up to one millilitre to several litres. 

Beakers are commonly made of glass (today usually borosilicate glass), but can also be in metal (such as stainless steel or aluminium) or certain plastics (notably polythene, polypropylene). A common use for polypropylene beakers is gamma spectral analysis of liquid and solid samples

Sodium Carbonate Solution

Sodium Carbonate Solution

Sodium Carbonate
Beaker
Conical Flask
Funnel
Filter Paper
Wooden Lolly stick
Small clean bottle with lid/cap
Label

Add 3 measures (15 gms.)  of Sodium Carbonate to a 50ml of warm water in the beaker. Stir the solution until all the solid has dissolved. Filter the milky solution into the conical flask with filter paper and funnel. Pour the solution into an empty bottle. Label and seal this bottle.
 

Wednesday, August 24, 2011

Lime Water (Chemical used in other experiments)
You will need:
Calcium Hydroxide (powder) 
Small clean bottle with lid/cap
Label

Lime Water is a solution of Calcium Hydroxide

Put 2 measures of Calcium Hydroxide into a bottle and add 80ml of water (measured) into the bottle. Put the cap onto the bottle and shake for a minute or so. Leave it to stand where the solid particles of the Calcium Hydroxide which remain will settle leaving a clear solution. This clear Solution is Lime water. Carefully pour the clear solution into the bottle and label.
 


Sunday, August 7, 2011

Horoscopes

Horoscopes

Leo July 24-Aug 23
A relationship you thought was over could preoccupy you. Let events unfold and do not make a premature decision. It also seems that what you want from someone has been changing. If you tune in to your deeper feelings, you will find the right way forward. Focus on your home life later in the week.

Virgo Aug 24-Sep 23
Postpone decisions about how to handle recent problems and relax this week. If you stand back and try to see the bigger picture, you will find a way to reach a more secure position with a loved one or close friend, so do not try to take control, or feel that you should make the running. An unexpected meeting could change many things.


Libra Sep 24-Oct 23
It seems that a creative project you were forced to shelve could now take off, so reassess your long-term goals this week and do not be afraid to change direction. If you concentrate on working out the details of your plan, you will be ready to take action. Do not let domestic issues cloud your judgment.


Scorpio Oct 24-Nov 22
Something that you could not have foreseen is due to make you rethink certain long-term plans this week. What matters now is being flexible about the future, so be prepared to listen to advice and change the status quo. The time has come to let go of a situation that you have outgrown and take the road less travelled.


Sagittarius Nov 23-Dec 21
A joint financial issue comes up for review this week when the wealth planet Pluto clashes with outspoken, headstrong Mars. If you are diplomatic, you can win somebody over, so take the line of least resistance and let others feel that they are in control. Get in touch with someone from your past later in the week.


Capricorn Dec 22-Jan 20
With Pluto, the planet of far-reaching change and new beginnings, travelling through your sign throughout the coming decade, better times lie ahead, so do not make a rushed decision, or let others tell you.


Taurus April 21-May 21
Do not let domestic pressures or well-meant advice stop you pursuing a new goal this week. What you want from life is changing, so draw up constructive plans and work out how to put them into action. Someone in a key position could give you feedback and support. Gemini May 22-June 21
You can avoid potential problems if you do not say too much, too soon about a new idea or project, so keep your thoughts about the future to yourself this week. A joint financial issue comes up for review from Friday. Events will work out in your favour if you bide your time. Meanwhile, focus on your social life.

Cancer June 22-July 23
Slow down and put ambitious plans on hold this week. With Mercury stirring up confusion in your chart’s financial zone, you could create more problems than you solve by trying to force through changes. 

U.K. Needs to Stop 'Muddling' on Gene Patents, Says Report

U.K. Needs to Stop 'Muddling' on Gene Patents, Says Report.

LONDON—The Human Genetics Commission (HGC), an independent group that advises the U.K. government, issued a plea today to health and research institutions to develop a coherent policy on intellectual property, particularly patents on diagnostic tools. The message came in a new report, "Intellectual Property and DNA Diagnostics" launched at a press conference—the swan song of the soon-to-be-disbanded HGC. The report found that doctors and researchers in U.K. public institutions have mostly ignored biotech companies' patents on numerous genetic tests, leaving patent-holders unsure how much their intellectual property (IP) is worth. IP owners who say their claims are being ignored often don't even try to sue the mammoth National Health Service, according to the report, partly because they don't know where to begin.
The HGC report made several recommendations: First, Research Councils U.K. and other funding agencies should review their licensing requirements. The Department of Health needs to find a way to monitor how IP involving biomarkers affects diagnostics, and NHS should be given governmental support in managing these issues. Finally, the report recommends that data should be gathered on what kind of impact IP has on innovation to bring clarity to what is now a heated and often confused debate on the value of patents.
One panellist at the press conference spoke of the need to minimize the nuisance factor of patents in health care. The patenting of DNA-based tests is "unacceptable, unenforceable, and detrimental," says Gail Norbury, commissioning and governance director of genetics laboratories at Guy's Hospital here.
The U.K. public health system has so far been able to "muddle through" by working around IP issues, says science policy expert Michael Hopkins of the University of Sussex, but it does so at its own peril. "The clock is running on multiple infringement suits. Back royalties can be claimed and those are accumulating. We can't keep muddling."
In the meantime, says Berwyn Clarke of the biotech company Lab21 in Cambridge, the United Kingdom should be concerned that its biotech companies might move to countries where they can more easily assert their IP rights. Because of the strength of NHS, he says, "the U.K. should be the best in world [for developing and clinically testing diagnostic tests], but at the moment it's one of the worst [places] to develop a business."
Hopkins says that Europe is less protective of IP for diagnostic tests than the United States. He cited a 2009 survey that found that only 4% of E.U. public sector labs have had to withdraw genetic testing because of IP claims, compared with 25% in the United States. Seven times more gene patents have been filed in the United States than in Europe. The U.S. market is so large and lucrative, and patents so much easier to enforce, he told ScienceInsider, that many U.S. companies haven't found it worth their while to assert their rights overseas. That could change, however: "It's just a matter of when someone gets hungry enough."
Economist Stuart Hogarth of Kings College London agrees that companies are getting itchy to start getting some returns on their R&D investments, especially as many U.K. regulatory agencies are strengthening their evidence demands. But because IP issues affecting diagnostic tests are case-specific, he couldn't envision a single law or approach resolving the matter.
Many hospitals and research labs devise their own "homebrew" tests, avoiding royalty payments to those who hold key patents. For instance, AstraZeneca holds a patent on a genetic test for non-small cell lung carcinoma. In the United Kingdom, Clarke says, 21 labs test for this marker, but only two use the test approved by U.K. regulators. Some "are of higher quality than others," Clarke says, "and mistakes do get made." Clarke, who advocates standardization of tests, suggests that NHS should be more concerned about this.
Norbury disagrees: Multiple tests, including homebrews, can be used to cross-check results, she says. And homebrew testing makes it possible for patients to get a second opinion even if hospitals aren't willing to buy the company-backed test. She also sees nothing wrong with workarounds that evade royalties. "People find a way around things; how are you going to prevent people copying CDs?" The public health sector, she feels, shouldn't have to worry about patent-holders nipping at its heels.
But many agree that the current system is broken. It's time, says Alastair Kent, a panel member and chair of the HGC's Monitoring Group on Intellectual Property, to "shed light rather than generate heat and dust."

Seasonal Flows on Warm Martian Slopes

Seasonal Flows on Warm Martian Slopes.

Abstract

Water probably flowed across ancient Mars, but whether it ever exists as a liquid on the surface today remains debatable. Recurring slope lineae (RSL) are narrow (0.5 to 5 meters), relatively dark markings on steep (25° to 40°) slopes; repeat images from the Mars Reconnaissance Orbiter High Resolution Imaging Science Experiment show them to appear and incrementally grow during warm seasons and fade in cold seasons. They extend downslope from bedrock outcrops, often associated with small channels, and hundreds of them form in some rare locations. RSL appear and lengthen in the late southern spring and summer from 48°S to 32°S latitudes favoring equator-facing slopes, which are times and places with peak surface temperatures from ~250 to 300 kelvin. Liquid brines near the surface might explain this activity, but the exact mechanism and source of water are not understood.