Friday, 26 December 2014

Lazy Lifestyle Led To Weaker Bones

The comparatively light bone structure of modern humans compared to ancestor  and other modern primates may be due to the modern abandonment of the constant physical activity that was inherent in the life of early hunter gathers.

The most plausible explanation is that a lack of constant physical activity causes the bone in the head of the femur, the long bone in the thigh, to become thinner and lighter than that found in more mobile populations or modern primates such as chimpanzees, gorillas and orangutans.
The other two possible explanations, that humans and nonhuman primates have different bone structure because of genetics, with humans evolving to a lighter, more gracile structure, Or that the large joint surfaces required for upright, two-legged movement decrease the strain on bone and therefore the development of strong bones, do not appear to be true.

Ryan, working with Colin N. Shaw of the University of Cambridge, UK, looked at the hip joint to determine which of the three possible explanations was likely.

The researchers found that the agriculturalists had significantly lower bone mass than the foragers. However, the bone characteristics of the more mobile foragers overlapped with those of the nonhuman primates.

This knowledge might aid in prevention of osteoporosis and hip fracture in the elderly.

Source :- http://www.dnaindia.com/health/report-laziness-has-made-modern-humans-bones-brittle-reveals-new-study-2046514

Saturday, 20 December 2014

Antimicrobial Metal :- Copper !

Copper and its alloys (brasses, bronzes, copper-nickel-zinc, and others) are natural antimicrobial materials. Ancient civilizations exploited the antimicrobial properties of copper long before the concept of microbes became understood in the nineteenth century.

Bacteria, yeasts, and viruses are rapidly killed on metallic copper surfaces, and the term “contact killing” has been coined for this process. In several clinical studies, copper has been evaluated for use on touch surfaces, such as door handles, bathroom fixtures, or bed rails, in attempts to curb nosocomial infections. In connection to these new applications of copper, it is important to understand the mechanism of contact killing since it may bear on central issues, such as the possibility of the emergence and spread of resistant organisms, cleaning procedures, and questions of material and object engineering. Recent work has shed light on mechanistic aspects of contact killing.
The antimicrobial properties of copper are still under active investigation. Molecular mechanisms responsible for the antibacterial action of copper have been a subject of intensive research. Scientists are also actively demonstrating the intrinsic efficacies of copper alloy "touch surfaces" to destroy a wide range of microorganisms that threaten public health.
 In addition, different copper alloys should be tested not only for their effectiveness but also for their esthetic appeal. Finally, the antimicrobial properties of copper surfaces must be integrated with other methods of disinfection and the overall hygiene concept of a health care facility. Additional measures, such as the addition of spore germinants to cleaning solutions to improve killing of spores, also deserve further investigation.
Source :- http://en.wikipedia.org/wiki/Antimicrobial_properties_of_copper,Ncbi .

Tuesday, 9 December 2014

Mission :- Educated Bharat


As we know that in Bharat there a lot of children who never get any education. This is because of their background, caste and other problems. I want to education all of them which is impossible yet, but i have an idea to educate them.
In Bharat there are a lot of families and a family has a housewife. I know that most them are not educated, but 50% of them are educated. From this 50%, 25% are working or employed anywhere, but 25% are free. So, when they have their spare time (generally afternoon), they should collect 2 or 3 children (who don't have money to educate them) and educate them, just for 1 hour daily. If one housewife educate 3 children, then 5 million housewife educate 15 million of children every hour in India. And in this 15 million of children 50% are girls, so the housewives of Bharaeducating girls too. 
At last, it is my request to all the reader please give you 1% percent by sharing my view, because your 1% will be 10% of Bharat's Future .
Thank You for reading , i hope you co-operate . 

Monday, 6 October 2014

Does Curiosity Improve Your Brain Memory ?

As everyone knows it's easier to learn about a topic you're curious about.Now, a new study reveals what's going on in the brain during that process, revealing that such curiosity may give a person a memory boost.
When participants in the study were feeling curious, they were better at remembering information even about unrelated topics, and brain scans showed activity in areas linked to reward and memory.
The results, detailed Oct. 2 in the journal Neuron, hint at ways to improve learning and memory in both healthy people and those with neurological disorders, the researchers said.
Not surprisingly, the study researchers found that people remembered more information about the trivia when they were curious about the trivia answers.But unexpectedly, when the participants were curious, they were also better at remembering the faces, an entirely unrelated task. 
Participants who were curious were also more likely than others to remember both the trivia information and unrelated faces a day later, the researchers found.

The brain scans showed that, compared with when their curiosity wasn't piqued, when people were curious, they showed more activation of brain circuits in the nucleus accumbens, an area involved in reward. These same circuits, mediated by the neurochemical messenger dopamine, are involved in forms of external motivation, such as food, sex or drug addiction.

Finally, being curious while learning seemed to produce a spike of activity in the hippocampus, an area involved in forming new memories, and strengthened the link between memory and reward brain circuits.

According to my view being curious is very important because of that we can discover, invent, improve and know about  everything . 
So, 
                                                     Be curious, not judgemental.

Saturday, 21 June 2014

Facts which blow your mind!!!!

Some Great  Facts About Some  Great Personalities . 

  1. Adolf Hitler was a vegetarian, and had only ONE testicle.  
  2. Leonardo da Vinci could write with one hand and draw with the other at the same time.
  3. Queen Elizabeth I regarded herself as a paragon of cleanliness.She declared that she bathed once every three months, whether she needed it or not .
  4. In 1935 a writer named Dudley Nichols refused to accept the Oscar for his movie The Informer because the Writers Guild was on strike against the movie studios.
  5.  In 1970 George C. Scott refused the Best Actor Oscar for Patton.
  6. In 1972 Marlon Brando refused the Oscar for his role in The Godfather.
  7. Bill Gates' first business was Traff-O-Data, a company that created machines which recorded the number of cars passing a given point on a road.
  8. Plutonium - first weighed on August 20th, 1942, by University of Chicago scientists Glenn Seaborg and his colleagues - was the first man-made element.
  9. Horatio Nelson, one of England’s most illustrious admirals was throughout his life, never able to find a cure for his sea-sickness.
  10. When Albert Einstein died,  his final words died with him because the nurse at his side didn't understand German.
  11. The national flag of Italy was designed by Napoleon Bonaparte .

Wednesday, 18 June 2014

Did you know your skull is open until you become an adult ?

Fontanelle 
Fontanelles are soft spots on a baby's head which, during birth, enable the bony plates of the skull to flex, allowing the child's head to pass through the birth canal. The sphenoidal and posterior fontanelles close during the first few months after birth. Sphenoidal and posterior fontanelles are found just above the ear and behind the ear representatively .
The ossification of the bones of the skull causes the anterior fontanelle to close over by 9 to 18 months.
The term "fontanelle" is used to describe the resulting "soft spots". The relative positions of the bones continue to change during the life of the adult (though less rapidly), which can provide useful information inforensics and archaeology. In old age, cranial sutures may ossify (turn to bone) completely .
The fusion of skull's bone at birth is known as Craniosynostosis . This is the amazing fact of your skull. This process is also seen in other animals like dogs and chimpanzee .
                                             Thank you for visiting, keep visiting

Thursday, 12 June 2014

Questions on World's essential thing :- Water

Q1. Why water is transparent ?
A1. When a material is opaque (transparent) the atoms in that material absorb all the wavelenghts of colours that is why it is transparent. When an object is transparent, the wavelenghts of light that hit the object are not correct wavelenghts of the atoms in the object will absorb. So the light passes through it .

Q2. If the water is transparent, why it reflect the light ?
A2. Water does not reflect the light, but refracts it. There are exists a set of equations called the Fresnel Equations that describe this refraction, And these equations also predicts that a small portion of light will reflect in something is called as Fresnel Reflection.This similar to how it is possible to see your reflection in a transparent glass. 

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