Tuesday, 11 August 2009

Top 20 Safe Driving Tips

Hitting the road on your next trip? Whether you're heading to Grandma's with the kids or hitting Route 66 for a cross-country jaunt, don't leave home without our tried and tested driving tips. Read on to learn more about avoiding traffic, saving money, and staying safe (and staying awake!) on your next road trip.

1. Before beginning a long drive, always get enough sleep and eat something before you go. Highly caffeinated beverages are not necessarily the best way to stay awake while driving. While initially you will feel more alert, the effects can recede with time, and your attention may wander although you remain awake.

2. Pull over and take breaks every couple of hours, even if you don't feel sleepy. Grab a snack, get some fresh air, and stretch your legs by walking around. If you need to, take a quick nap.

3. If you can, share the driving responsibilities with someone else. This will allow you to keep an eye on each other while driving and also enable you to nap without losing time. If you're driving alone, turn on the radio or put on some music, and keep your window cracked open. You may also want to refrain from using your cruise control if you're driving alone at night -- having to concentrate on maintaining your speed can help you stay awake.

4. If you do have to pull over, move your vehicle off the road. Never park on the shoulder or in the breakdown lane for any reason except an emergency.

 The Eight Best U.S. Road Trips

5. Know the laws along your route concerning cell phone use while driving. While it may be legal in one place, it may be illegal in another, and ignorance is not typically an acceptable excuse for a violation. Here's a handy chart of cell phone laws by state (keep in mind that this information can change at any time). However, even if it's legal to talk on a cell phone where you're going, it's usually safest to use a hands-free device.

6. If you don't know this one, shame on you. Never drink any alcohol before your trip. While you may not become intoxicated from one beer, you will become sleepy.

 Save on Your Next Car Rental

7. Keep an eye on the skies, and if you can, plan a route around inclement weather. A minor detour could actually wind up saving you major time.

8. Search the Web for traffic update sites and listen to radio traffic alerts, especially when approaching major cities. If you don't have a smartphone, all-news stations on the AM dial are often your best bet.

woman map road trip9. Not even a GPS unit is infallible, so we recommend bringing a detailed map or road atlas as a backup just in case. A mapping app on your smartphone is another must-have for long road trips.

10. If you are driving a rental vehicle, familiarize yourself with the car and all of its equipment (horn, brakes, hazard lights). For an amusing but true look at this issue, see The First 10 Minutes of Your Car Rental.

 Plan Your Road Trip

11. Lock all of your valuables (especially items that are clearly gifts) in the trunk or glove compartment and stow all luggage in the trunk. For more ideas, see Nine Ways to Keep Your Car Safe on the Road.

12. Familiarize yourself with local traffic laws, which vary from state to state and especially overseas. Is it legal to make a right turn at a red light? What are the rules on yielding to pedestrians? For more on international car travel, see Renting a Car Abroad.

13. Before setting off on a long car trip, be sure your vehicle is in prime condition -- that tires are properly inflated, all fluids are at their proper levels and you have a full tank of gas. (For particularly long road trips, you may want to have your mechanic do a more thorough check.)

14. Consider becoming a member of AAA or signing up for your car insurer's roadside assistance program. You won't regret it when your car breaks down on a lonely back road.

15. Keep costs down by conserving gas as you drive. Minimize sudden starts and stops, empty your car of all unnecessary weight, and slow down -- it takes much less fuel to drive 55 miles an hour than it does to drive 70. For more ideas, see Save Gas and Money.

16. Don't wait until your gas gauge is sitting on E to refuel. On an unfamiliar road, you never know when the next gas station will appear. As soon as you hit a quarter of a tank, start looking for a place to fill up.

17. When traveling with kids, be sure to stop often -- not just for snacks and potty breaks, but also for fun. See a cool playground along the way? Pull over and throw a Frisbee around. You'll also want to pack toys, books and music for the car -- not to mention your motion sickness remedy of choice. For more ideas, see Family Car Travel.

18. Feeling munchy? Stock up on snacks and drinks at grocery stores rather than gas stations or convenience stores -- you'll get a wider and healthier selection, as well as better prices. For more advice, see Eating Well and Staying Active.

19. On longer trips, keep napkins, plasticware and a small cooler handy for meals on the go. You'll also want some spare change for tolls, as well as a first-aid kit, flashlight, pillow and blanket. Keep a set of jumper cables, a spare tire or donut, and extra fluids for the car (such as windshield wiper fluid) in your trunk.

20. This last tip should go without saying, but it's important enough that we'll say it anyway: Make sure everyone in the car buckles his or her seatbelt. Not only will it keep you safe, but in many places it's also the law.

Thursday, 6 August 2009

Pharmacogenomics

Pharmacogenomics

DNA Microarray chip – Some can do as many as a million blood tests at onceMain article: Pharmacogenomics
Pharmacogenomics is the study of how the genetic inheritance of an individual affects his/her body’s response to drugs. It is a coined word derived from the words “pharmacology” and “genomics”. It is hence the study of the relationship between pharmaceuticals and genetics. The vision of pharmacogenomics is to be able to design and produce drugs that are adapted to each person’s genetic makeup.[7]

Pharmacogenomics results in the following benefits:[7]

Development of tailor-made medicines. Using pharmacogenomics, pharmaceutical companies can create drugs based on the proteins, enzymes and RNA molecules that are associated with specific genes and diseases. These tailor-made drugs promise not only to maximize therapeutic effects but also to decrease damage to nearby healthy cells.
More accurate methods of determining appropriate drug dosages. Knowing a patient’s genetics will enable doctors to determine how well his/ her body can process and metabolize a medicine. This will maximize the value of the medicine and decrease the likelihood of overdose.
Improvements in the drug discovery and approval process. The discovery of potential therapies will be made easier using genome targets. Genes have been associated with numerous diseases and disorders. With modern biotechnology, these genes can be used as targets for the development of effective new therapies, which could significantly shorten the drug discovery process.
Better vaccines. Safer vaccines can be designed and produced by organisms transformed by means of genetic engineering. These vaccines will elicit the immune response without the attendant risks of infection. They will be inexpensive, stable, easy to store, and capable of being engineered to carry several strains of pathogen at once.

[edit] Pharmaceutical products

Computer-generated image of insulin hexamers highlighting the threefold symmetry, the zinc ions holding it together, and the histidine residues involved in zinc binding.Most traditional pharmaceutical drugs are relatively simple molecules that have been found primarily through trial and error to treat the symptoms of a disease or illness. Biopharmaceuticals are large biological molecules known as proteins and these usually target the underlying mechanisms and pathways of a malady (but not always, as is the case with using insulin to treat type 1 diabetes mellitus, as that treatment merely addresses the symptoms of the disease, not the underlying cause which is autoimmunity); it is a relatively young industry. They can deal with targets in humans that may not be accessible with traditional medicines. A patient typically is dosed with a small molecule via a tablet while a large molecule is typically injected.

Small molecules are manufactured by chemistry but larger molecules are created by living cells such as those found in the human body: for example, bacteria cells, yeast cells, animal or plant cells.

Modern biotechnology is often associated with the use of genetically altered microorganisms such as E. coli or yeast for the production of substances like synthetic insulin or antibiotics. It can also refer to transgenic animals or transgenic plants, such as Bt corn. Genetically altered mammalian cells, such as Chinese Hamster Ovary (CHO) cells, are also used to manufacture certain pharmaceuticals. Another promising new biotechnology application is the development of plant-made pharmaceuticals.

Biotechnology is also commonly associated with landmark breakthroughs in new medical therapies to treat hepatitis B, hepatitis C, cancers, arthritis, haemophilia, bone fractures, multiple sclerosis, and cardiovascular disorders. The biotechnology industry has also been instrumental in developing molecular diagnostic devices that can be used to define the target patient population for a given biopharmaceutical. Herceptin, for example, was the first drug approved for use with a matching diagnostic test and is used to treat breast cancer in women whose cancer cells express the protein HER2.

Modern biotechnology can be used to manufacture existing medicines relatively easily and cheaply. The first genetically engineered products were medicines designed to treat human diseases. To cite one example, in 1978 Genentech developed synthetic humanized insulin by joining its gene with a plasmid vector inserted into the bacterium Escherichia coli. Insulin, widely used for the treatment of diabetes, was previously extracted from the pancreas of abattoir animals (cattle and/or pigs). The resulting genetically engineered bacterium enabled the production of vast quantities of synthetic human insulin at relatively low cost[8]. According to a 2003 study undertaken by the International Diabetes Federation (IDF) on the access to and availability of insulin in its member countries, synthetic 'human' insulin is considerably more expensive in most countries where both synthetic 'human' and animal insulin are commercially available: e.g. within European countries the average price of synthetic 'human' insulin was twice as high as the price of pork insulin[9]. Yet in its position statement, the IDF writes that "there is no overwhelming evidence to prefer one species of insulin over another" and "[modern, highly-purified] animal insulins remain a perfectly acceptable alternative[10].

Modern biotechnology has evolved, making it possible to produce more easily and relatively cheaply human growth hormone, clotting factors for hemophiliacs, fertility drugs, erythropoietin and other drugs.[11] Most drugs today are based on about 500 molecular targets. Genomic knowledge of the genes involved in diseases, disease pathways, and drug-response sites are expected to lead to the discovery of thousands more new targets.[11]


[edit] Genetic testing

Gel electrophoresisGenetic testing involves the direct examination of the DNA molecule itself. A scientist scans a patient’s DNA sample for mutated sequences.

There are two major types of gene tests. In the first type, a researcher may design short pieces of DNA (“probes”) whose sequences are complementary to the mutated sequences. These probes will seek their complement among the base pairs of an individual’s genome. If the mutated sequence is present in the patient’s genome, the probe will bind to it and flag the mutation. In the second type, a researcher may conduct the gene test by comparing the sequence of DNA bases in a patient’s gene to disease in healthy individuals or their progeny.

Genetic testing is now used for:

Carrier screening, or the identification of unaffected individuals who carry one copy of a gene for a disease that requires two copies for the disease to manifest;
Confirmational diagnosis of symptomatic individuals;
Determining sex;
Forensic/identity testing;
Newborn screening;
Prenatal diagnostic screening;
Presymptomatic testing for estimating the risk of developing adult-onset cancers;
Presymptomatic testing for predicting adult-onset disorders.
Some genetic tests are already available, although most of them are used in developed countries. The tests currently available can detect mutations associated with rare genetic disorders like cystic fibrosis, sickle cell anemia, and Huntington’s disease. Recently, tests have been developed to detect mutation for a handful of more complex conditions such as breast, ovarian, and colon cancers. However, gene tests may not detect every mutation associated with a particular condition because many are as yet undiscovered, and the ones they do detect may present different risks to different people and populations.[11]


[edit] Controversial questions

The bacterium C Villos lada is routinely genetically engineered.The absence of privacy and anti-discrimination legal protections in most countries can lead to discrimination in employment or insurance or other misuse of personal genetic information. This raises questions such as whether genetic privacy is different from medical privacy.[12]

Reproductive issues. These include the use of genetic information in reproductive decision-making and the possibility of genetically altering reproductive cells that may be passed on to future generations. For example, germline therapy forever changes the genetic make-up of an individual’s descendants. Thus, any error in technology or judgment may have far-reaching consequences. Ethical issues like designer babies and human cloning have also given rise to controversies between and among scientists and bioethicists, especially in the light of past abuses with eugenics.
Clinical issues. These center on the capabilities and limitations of doctors and other health-service providers, people identified with genetic conditions, and the general public in dealing with genetic information.
Effects on social institutions. Genetic tests reveal information about individuals and their families. Thus, test results can affect the dynamics within social institutions, particularly the family.
Conceptual and philosophical implications regarding human responsibility, free will vis-à-vis genetic determinism, and the concepts of health and disease.

[edit] Gene therapy
Main article: Gene therapy

Gene therapy using an Adenovirus vector. A new gene is inserted into an adenovirus vector, which is used to introduce the modified DNA into a human cell. If the treatment is successful, the new gene will make a functional protein.Gene therapy may be used for treating, or even curing, genetic and acquired diseases like cancer and AIDS by using normal genes to supplement or replace defective genes or to bolster a normal function such as immunity. It can be used to target somatic (i.e., body) or gametes (i.e., egg and sperm) cells. In somatic gene therapy, the genome of the recipient is changed, but this change is not passed along to the next generation. In contrast, in germline gene therapy, the egg and sperm cells of the parents are changed for the purpose of passing on the changes to their offspring.

There are basically two ways of implementing a gene therapy treatment:

Ex vivo, which means “outside the body” – Cells from the patient’s blood or bone marrow are removed and grown in the laboratory. They are then exposed to a virus carrying the desired gene. The virus enters the cells, and the desired gene becomes part of the DNA of the cells. The cells are allowed to grow in the laboratory before being returned to the patient by injection into a vein.
In vivo, which means “inside the body” – No cells are removed from the patient’s body. Instead, vectors are used to deliver the desired gene to cells in the patient’s body.
Currently, the use of gene therapy is limited. Somatic gene therapy is primarily at the experimental stage. Germline therapy is the subject of much discussion but it is not being actively investigated in larger animals and human beings.

As of June 2001, more than 500 clinical gene-therapy trials involving about 3,500 patients have been identified worldwide. Around 78% of these are in the United States, with Europe having 18%. These trials focus on various types of cancer, although other multigenic diseases are being studied as well. Recently, two children born with severe combined immunodeficiency disorder (“SCID”) were reported to have been cured after being given genetically engineered cells.

Gene therapy faces many obstacles before it can become a practical approach for treating disease.[13] At least four of these obstacles are as follows:

Gene delivery tools. Genes are inserted into the body using gene carriers called vectors. The most common vectors now are viruses, which have evolved a way of encapsulating and delivering their genes to human cells in a pathogenic manner. Scientists manipulate the genome of the virus by removing the disease-causing genes and inserting the therapeutic genes. However, while viruses are effective, they can introduce problems like toxicity, immune and inflammatory responses, and gene control and targeting issues. In addition, in order for gene therapy to provide permanent therapeutic effects, the introduced gene needs to be integrated within the host cell's genome. Some viral vectors effect this in a random fashion, which can introduce other problems such as disruption of an endogenous host gene.
High costs. Since gene therapy is relatively new and at an experimental stage, it is an expensive treatment to undertake. This explains why current studies are focused on illnesses commonly found in developed countries, where more people can afford to pay for treatment. It may take decades before developing countries can take advantage of this technology.
Limited knowledge of the functions of genes. Scientists currently know the functions of only a few genes. Hence, gene therapy can address only some genes that cause a particular disease. Worse, it is not known exactly whether genes have more than one function, which creates uncertainty as to whether replacing such genes is indeed desirable.
Multigene disorders and effect of environment. Most genetic disorders involve more than one gene. Moreover, most diseases involve the interaction of several genes and the environment. For example, many people with cancer not only inherit the disease gene for the disorder, but may have also failed to inherit specific tumor suppressor genes. Diet, exercise, smoking and other environmental factors may have also contributed to their disease.

Application-Oxford

Biotechnology has applications in four major industrial areas, including health care (medical), crop production and agriculture, non food (industrial) uses of crops and other products (e.g. biodegradable plastics, vegetable oil, biofuels), and environmental uses.

For example, one application of biotechnology is the directed use of organisms for the manufacture of organic products (examples include beer and milk products). Another example is using naturally present bacteria by the mining industry in bioleaching. Biotechnology is also used to recycle, treat waste, clean up sites contaminated by industrial activities (bioremediation), and also to produce biological weapons.

A series of derived terms have been coined to identify several branches of biotechnology, for example:-bioinformatics

Bioinformatics is an interdisciplinary field which addresses biological problems using computational techniques, and makes the rapid organization and analysis of biological data possible. The field may also be referred to as computational biology, and can be defined as, "conceptualizing biology in terms of molecules and then applying informatics techniques to understand and organize the information associated with these molecules, on a large scale."[6] Bioinformatics plays a key role in various areas, such as functional genomics, structural genomics, and proteomics, and forms a key component in the biotechnology and pharmaceutical sector.
Blue biotechnology is a term that has been used to describe the marine and aquatic applications of biotechnology, but its use is relatively rare.
Green biotechnology is biotechnology applied to agricultural processes. An example would be the selection and domestication of plants via micropropagation. Another example is the designing of transgenic plants to grow under specific environmental in the presence (or absence) of chemicals. One hope is that green biotechnology might produce more environmentally friendly solutions than traditional industrial agriculture. An example of this is the engineering of a plant to express a pesticide, thereby ending the need of external application of pesticides. An example of this would be Bt corn. Whether or not green biotechnology products such as this are ultimately more environmentally friendly is a topic of considerable debate.
Red biotechnology is applied to medical processes. Some examples are the designing of organisms to produce antibiotics, and the engineering of genetic cures through genomic manipulation.
White biotechnology, also known as industrial biotechnology, is biotechnology applied to industrial processes. An example is the designing of an organism to produce a useful chemical. Another example is the using of enzymes as industrial catalysts to either produce valuable chemicals or destroy hazardous/polluting chemicals. White biotechnology tends to consume less in resources than traditional processes used to produce industrial goods. The investments and economic output of all of these types of applied biotechnologies form what has been described as the bioeconomy.

Education

Education

Education in its broadest sense is any act or experience that has a formative effect on the mind, character, or physical ability of an individual. In its technical sense education is the process by which society deliberately transmits its accumulated knowledge, skills and values from one generation to another through institutions.
Teachers in such institutions direct the education of students and might draw on many subjects, including reading, writing, mathematics, science and history. This process is sometimes called schooling when referring to the education of youth. Teachers in specialized professions such as astrophysics, law, or zoology may teach only a certain subject, usually as professors at institutions of higher learning. There is also education in fields for those who want specific vocational skills, such as those required to be a pilot. In addition there is an array of education possible at the informal level, e.g., at museums and libraries, with the Internet, and in life experience.
The right to education has been described as a basic human right: since 1952, Article 2 of the first Protocol to the European Convention on Human Rights obliges all signatory parties to guarantee the right to education. At world level, the United Nations' International Covenant on Economic, Social and Cultural Rights of 1966 guarantees this right under its Article 13.

Wednesday, 5 August 2009

Halloween or Hallowe'en

Halloween or Hallowe'en a contraction of "All Hallows' Evening"),also known as All Hallows' Eve, is a yearly celebration observed in a number of countries on 31 October, the eve of the Western Christian feast of All Hallows' Day. It initiates the triduum of Hallowmas, the time in the liturgical year dedicated to remembering the dead, including saints (hallows), martyrs, and all the faithful departed believers.
According to many scholars, All Hallows' Eve is a Christianized feast initially influenced by Celtic harvest festivals, with possible pagan roots, particularly the Gaelic Samhain. Other academics maintain that it originated independently of Samhain and has solely Christian roots.
Typical festive Halloween activities include trick-or-treating (or the related "guising" or "trunk-or-treating"), attending costume parties, decorating, carving pumpkins into jack-o'-lanterns, lighting bonfires, apple bobbing, visiting haunted attractions, playing pranks, telling scary stories, and watching horror films.

Trick-or-treating, trunk-or-treating and guising

Main article: Trick-or-treating


Trick-or-treaters in Sweden
Trick-or-treating is a customary celebration for children on Halloween. Children go in costume from house to house, asking for treats such as candy or sometimes money, with the question, "Trick or treat?" The word "trick" refers to "threat" to perform mischief on the homeowners or their property if no treat is given. The practice is said to have roots in the medieval practice of mumming, which is closely related to souling (discussed above). John Pymm writes that "many of the feast days associated with the presentation of mumming plays were celebrated by the Christian Church."[These feast days included All Hallows' Eve, Christmas, Twelfth Night and Shrove Tuesday. Mumming, practised in Germany, Scandinavia and other parts of Europe,[involved masked persons in fancy dress who "paraded the streets and entered houses to dance or play dice in silence." Their "basic narrative framework is the story of St. George and the Seven Champions of Christendom."
In Scotland and Ireland, guising – children disguised in costume going from door to door for food or coins  – is a traditional Halloween custom, and is recorded in Scotland at Halloween in 1895 where masqueraders in disguise carrying lanterns made out of scooped out turnips, visit homes to be rewarded with cakes, fruit and money. The practice of Guising at Halloween in North America is first recorded in 1911, where a newspaper in Kingston, Ontario reported children going "guising" around the neighborhood.