Subscribe for updates!

Latest Photos

Science Fiction Wallpaper Science Fiction Wallpaper Science Fiction Wallpaper Science Fiction Wallpaper Science Fiction Wallpaper Science Fiction Wallpaper Science Fiction Wallpaper Planet Science Fiction Wallpaper Planet Planet Planet
Search this blog..

Top Stories of the week

Our Link Partners

Link Exchange? Click Here

Physical Therapists

Posted in : Gossips, Physics

(added 14 hours ago)

Physical therapy is a health care profession that provides treatment to individuals to develop, maintain and restore maximum movement and function throughout life. This includes providing treatment in circumstances where movement and function are threatened by aging, injury, disease or environmental factors. Physical therapy is concerned with identifying and maximizing quality of life and movement potential within the spheres of promotion, prevention, treatment/intervention, habilitation and rehabilitation.

This encompasses physical, psychological, emotional, and social well being. It involves the interaction between physical therapist, patients/clients, other health professionals, families, caregivers, and communities in a process where movement potential is assessed and goals are agreed upon, using knowledge and skills unique to physical therapists. Either a physical therapist or an assistant acting under their direction performs physical therapy.

Physical therapy has many specialties including cardiopulmonary, geriatrics, neurologic, orthopedic and pediatrics, to name some of the more common areas and the physical therapist offers his/her expertise in the aforementioned areas.  Moreover physical therapists help relieve muscle and back aches, chronic problems such as arthritis, even heart and lung issues. Injuries especially caused during sports related incidents are treated by physical therapy as well. Moreover it acts as a stress relieving mechanism.

Physical therapists provide care to people of all ages who have functional problems resulting from, for example, back and neck injuries, sprains/strains and fractures, arthritis, burns, amputations, stroke, multiple sclerosis, conditions such as cerebral palsy and spina bifida, and injuries related to work and sports. Physical therapists evaluate and diagnose movement dysfunction and use interventions to treat patient/clients. Interventions may include therapeutic exercise, functional training, manual therapy techniques, assistive and adaptive devices and equipment, and physical agents and electrotherapeutic modalities.

Physical therapists as often is the case specialize in a particular area so that they can offer their expertise in a certain area or field. As mandatory for Doctors, Physical therapists too need four years of college, which at the end earns them a certified expert label. This is not commonly renowned and therefore people tend to mistake physical therapists for a coach or counselors at first.

However coaching and counseling is undoubtedly an important aspect of physical therapy. As is seen this is what most of the physical therapists are seen doing. They have to act as counselors guiding the patient as to the exercises they need to do. They sometimes even accompany them during their jogging/walking sessions. They sometimes even guide them during swimming sessions to make sure that they are practices the exercises that they are supposed to.

In many countries, the profession of physical therapy has grown to become the largest allied health profession, in third place only behind medicine and nursing in the number of graduating health care students. Physicians like Hippocrates and later Galenus are believed to have been the first practitioners of physical therapy, advocating massage, manual therapy techniques and hydrotherapy to treat people in 460 B.C.

After the development of orthopedics in the eighteenth century, machines were developed to treat gout and similar diseases by systematic exercise of the joints, similar to later developments in physical therapy. In 1887, Physical Therapists were given official registration by Sweden's National Board of Health and Welfare. Other countries soon followed. In 1894 four nurses in Great Britain formed the Chartered Society of Physiotherapy. The School of Physiotherapy at the University of Otago in New Zealand in 1913, and the United States' 1914 Reed College in Portland, Oregon, which graduated "reconstruction aides."

Treatment through the 1940s primarily consisted of exercise, massage, and traction. Manipulative procedures to the spine and extremity joints began to be practiced, especially in the British Commonwealth countries, in the early 1950s. Later that decade, physical therapists started to move beyond hospital based practice, to outpatient orthopedic clinics, public schools, college/universities, geriatric settings (skilled nursing facilities), rehabilitation centers, hospitals, and medical centers. Specialization for physical therapy in the U.S. occurred in 1974, with the Orthopedic Section of the APTA being formed for those physical therapists specializing in orthopedics. In the same year, the International Federation of Orthopedic Manipulative Therapy was formed, which has played an important role in advancing manual therapy worldwide ever since.

This world is full of diverse individuals; there are many instances when we come across children with disabilities in our immediate environment or even family. However there are certain cases that can be worked upon and those children can grow up to become as normal as everyone else. For example suppose a child who is born with cerebral palsy has a good likelihood to recover partially by the time he/she is an adolescent provided that the child receives appropriate physical therapy.

The mechanism is such that if the brain can receive a certain stimulus, then neurons can begin to form, which fosters the recovery and thus overcoming the disability. Moreover activities requiring mobility are usually a learning process, one is not naturally born how to ride a bike or swim, rather they have t be taught and it can be perfected upon by practice. For example a physical therapist that is teaching a child who cannot crawl can do so by placing the child on his belly on a soft inflated balloon type ball. This would be a gradual process but with consistent endeavor both on part of the child and the therapist, it can lead to a fruitful result. With time, when one sees improvement, the ball can be replaced by a padded board on wheels. Gradually the child would develop the muscle tone and grasp the understanding of the entire process, eventually learning how to crawl.

Older patients that have trouble with a mobility problem usually triggered because of an injury or stroke sometimes also need to teach their body how to walk again. Water walking is an appropriate therapy in this regard. Water walking workouts and water aerobics are a no-impact way to strengthen your body, and good cross training from walking on land. Like all water exercises, water walking is easy on the joints. The water's buoyancy supports the body's weight, which reduces stress on the joints and minimizes pain. Through water walking, the body rebuilds the muscle tone and the brain can regenerate the neurons that may have been affected during the incident or injury.

Tai Chi is an internal Chinese martial art often practiced for health reasons. It is also typically practiced for a variety of other personal reasons: its hard and soft martial art technique, demonstration competitions, and longevity. Consequently, a multitude of training forms exist, both traditional and modern, which correspond to those aims. Some of tai chi training forms are well known to Westerners as the slow motion routines that groups of people practice together every morning in parks around the world.

Researchers have found that intensive tai chi practice shows some favorable effects on the promotion of balance control, flexibility, cardiovascular fitness and reduced the risk of falls in both healthy elderly patients, and those recovering from chronic stroke, heart failure, high blood pressure, heart attacks, multiple sclerosis, Parkinson's, and Alzheimer's. Tai chi's gentle, low impact movements burn more calories than surfing and nearly as many as downhill skiing.

Pilates is a physical fitness system developed in the early 20th century by Joseph Pilates in Germany. As of 2005, there are 11 million people who practice the discipline regularly and 14,000 instructors in the United States.

Pilates called his method Contrology because he believed his method uses the mind to control the muscles. The program focuses on the core postural muscles, which help keep the body balanced, and which are essential to providing support for the spine. In particular, Pilate's exercises teach awareness of breath and alignment of the spine, and aim to strengthen the deep torso muscles.

There is much to physical therapy that what meets the eye. The benefits are most relevant to the brain functions as most physical therapists aim to control the mind to facilitate body movement and regeneration of muscles. It wouldn't be inappropriate to refer to them as "brain programmer" as essentially that is what is being done. Physical therapy is something that all of us encounter sooner or later in our lives for whatever reason we may be having.

Read the rest of this entry »

(added 14 hours ago) / 2 views

Stem Cell Treatments for Weight Loss

Posted in : Biology

(added 1 days ago)

Stem cells are biological cells found in all multicellular organisms that can become any other cell or tissue type. They divide by mitosis and develop into  diverse specialized cell types. Stem cell research is at the cutting-edge of health-related developments that mankind has seen. It promises a permanent

solution for everything ranging from old age to cancer and even obesity. Different types of stem cells
Stem cells are considered to be master cells for other types of cells. Stem cell research is severely attacked and chastised by several religious and ethical

groups, especially when the research revolves around "embryonic" stem cells. But there are also two other types of stem cells that have much lesser ethical and moral controversies surrounding them.
The first one is the cord blood stem cell. These are isolated from the blood in the umbilical cord of a newborn. Since cord blood is considered a waste

product that must be discarded anyway, there are much lesser religious or ethical concerns here. Today, people even pay to have their babies' cord blood frozen, should the child need stem cells for later use.
For a very long time, scientists believed that only embryonic and cord blood stem cells are primitive enough to render them master cells that are capable of developing into any tissue type. But recent scientific research has discovered adult stem cells – stem cells from adult individuals – that have the capability to become any other type of cell. Just a few years ago, adult stem cells were used only for making blood. But now scientists believe that they have far more implications than what was thought possible. Adult stem cells are abundant in the bone marrow. They circulate in the body to replace dysfunctional cells.

What has all this got to do with weight loss?
What is the best and healthiest way to lose weight? Diet and exercise. You must understand that it is virtually impossible to lose weight permanently without exercise. However, most people find that even with exercise it is an uphill task to lose weight. This is because most of the exercises that people do to burn fat ends up burning mostly sugar. When fat is not burned off, it remains in the body and the result is weight gain or obesity in spite of exercising. Along with proper fat burning exercises such as walking, your body must also rebuild more muscle. When you exercise, your body builds more muscles. Where do

these new muscle cells come from? Can we in any way help new muscle cell growth?
Yes, and that is where stem cells come into the picture. You need enough adult stem cells in your body so that they can be converted into new muscle cells as you exercise. The lesser the number of adult stem cells you have, the lesser the body's ability to build new muscle cells. With the revolutionary stem cell treatment for weight loss, mobilization of adult stem cells from the bone marrow can be increased by 30% or more. There are many supplements and organic products available that support and boost the release of stem cells from the marrow into the blood stream. Through the natural processes of the body, these adult stem cells then travel to those parts where they are needed the most. Stem cells not only enhance the body's ability to do what it is naturally supposed to do, it also fills you with more energy.

Read the rest of this entry »

(added 1 days ago) / 5 views

DNA replication protein also has a role in mitosis, cancer

Posted in : Biology

(added 3 days ago)

DNA replication protein also has a role in mitosis, cancerCHAPEL HILL, N.C. – The foundation of biological inheritance is DNA replication – a tightly coordinated process in which DNA is simultaneously copied at hundreds of thousands of different sites across the genome. If that copying mechanism doesn't work as it should, the result could be cells with missing or extra genetic material, a hallmark of the genomic instability seen in most birth defects and cancers.

University of North Carolina School of Medicine scientists have discovered that a protein known as Cdt1, which is required for DNA replication, also plays an important role in a later step of the cell cycle, mitosis. The finding presents a possible explanation for why so many cancers possess not just genomic instability, but also more or less than the usual 46 DNA-containing chromosomes.

The new research, which was published online ahead of print by the journal Nature Cell Biology, is the first to definitively show such a dual role for a DNA replication protein.

"It was such a surprise, because we thought we knew what this protein's job was – to load proteins onto the DNA in preparation for replication," said Jean Cook, PhD, associate professor of biochemistry and biophysics and pharmacology at the UNC School of Medicine and senior study author. "We had no idea it also had a night job, in a completely separate part of the cell cycle."

The cell cycle is the series of events that take place in a cell leading to its growth, replication and division into two daughter cells. It consists of four distinct phases: G1 (Gap 1), S (DNA synthesis), M (mitosis) and G2 (Gap 2). Cook's research focuses on G1, when Cdt1 places proteins onto the genetic material to get it ready to be copied.

In this study, Cook ran a molecular screen to identify other proteins that Cdt1 might be interacting with inside the cell. She expected to just find more entities that controlled replication, and was surprised to discover one that was involved in mitosis. That protein, called Hec1 for "highly expressed in cancer," helps to ensure that the duplicated chromosomes are equally divided into daughter cells during mitosis, or cell division. Cook hypothesized that either Hec1 had a job in DNA replication that nobody knew about, or that Cdt1 was the one with the side business.

Cook partnered with Hec1 expert Edward (Ted) D. Salmon, PhD, professor of biology and co-senior author in this study, to explore these two possibilities. After letting Cdt1 do its replication job, the researchers interfered with the protein's function to see if it adversely affected mitosis. Using a high-powered microscope that records images of live cells, they showed that cells where Cdt1 function had been blocked did not undergo mitosis properly.

Once the researchers knew that Cdt1 was involved in mitosis, they wanted to pinpoint its role in that critical process. They further combined their genetic, microscopy and computational methods to demonstrate that without Cdt1, Hec1 fails to adopt the conformation inside the cells necessary to connect the chromosomes with the structure that pulls them apart into their separate daughter cells.

Cook says cells that make aberrant amounts of Cdt1, like that seen in cancer, can therefore experience problems in both replication and mitosis. One current clinical trial is actually trying to ramp up the amount of Cdt1 in cancer cells, in the hopes of pushing them from an already precarious position into a fatal one.

Read the rest of this entry »

(added 3 days ago) / 8 views

Debunking Physics

Posted in : Physics

(added 8 days ago)

This article is derived from the essay “An Infinite Moment of Time”. The essay presents the logic structure that is the paradigm of science, and is located at: http://members.westnet.com.au/paradigm/forever.pdf      

On my way to inventing the paradigm I explored physics through the desire to understand how the Universe worked, and the place of Humans within the scheme of things. One of my few preconceptions was the belief that the course of Human evolution has seen a steady improvement in knowledge and understanding. I’m an optimist.  I’m also a determinist, in that I see everything as being the effect of a cause which in turn is the cause of another effect. The idea that things can happen without a cause, is nonsense.

The big bang theory was a particular cause for me to explore physics. I thought it simply absurd to think that there could be a time before time even begun. Then there was all the talk about time being an independent dimension: more absurdity. It was obvious that this was a discipline desperately in need of debunking.

Another preconception that I brought to my exploration of physics was materialism. I mean that it the philosophical sense of seeing everything as being made of a substance that we call matter. Physics, when not talking about time as a dimension, is always talking about a thing they call energy. I recall an academic once saying that the concept of energy was one that you couldn’t actually explain but had to “feel” in some mystical sense. As a materialist I wasn’t having any of that mystical stuff. Albert Einstein’s famous equation, E=mc2, didn’t convince me about this energy concept. For me, all that it was saying is that energy is matter in motion and that it can be detected or measured with instruments.  I also reject the idea of mass being something that is different to matter, given that even physics defines matter as “The substance of which the physical Universe is composed.” The implication within this definition that there could be a non-physical Universe I put down to a lack of rigorous thinking. Let’s be quite clear. As far as I’m concerned, the Universe is totally physical and totally composed of matter.

To deal with the whole of physics I categorize it in a way that represented its fundamental approach and perspective. This approach and perspective can be called a paradigm. Physics is a paradigm. This paradigm is characterized by the use of mathematics and measurements. Mathematics is abstractionist, and measuring things is also abstractionist in that the thing you measure never actually becomes the measurement. As a consequence of its reliance upon mathematics and measurements, I categorized physics as an abstractionist paradigm. Physicists are, therefore, practitioners of the abstractionist paradigm.

With its reliance upon mathematics and measurements, the abstractionist paradigm is not a truly fundamental perspective. I accept all scientific evidence. However, I interpret all evidence in accordance with a truly fundamental and materialist and logical scientific perspective. If you want to understand everything in a totally connected and consistent manner, you need to establish the most fundamental position that can be obtained. A position that is so fundamental that it covers all the disciplines of science.

As evidence is the central concept of science, what is evidence? We know the Universe through observation, and we interpret that observation with a perspective that we have either acquired or invented ourselves. To believe that observation is, in and of itself, evidence, is naive realism. Evidence is the best interpretation, or explanation, of observation. If you have the best explanation in one area of observation, then through logical consistency you can generate explanations in other areas that have scientific validity without the need for further observation.

If you believe that science can only involve those things which can be measured or directly observed, then you should not proceed beyond this point. I suggest you go away and measure something.

Gravity is the fundamental force of the Universe. Isaac Newton conceived of gravity as being proportional to the sum of the masses and inversely proportional to the square of the distance between the masses. This produced a mathematical representation of gravity, but left gravity has a magical action at a distance. Albert Einstein conceived of gravity as being caused by curved or warped space. This too, is unacceptable because once again no explanation of a material cause is contained within the idea of curved space. The latest thinking by establishment physics is that gravity is caused by the exchange of particles called gravitons. These particles are seen as travelling through what is assumed to be empty space. This exchange of gravitons theory is also inadequate.

All attraction is caused by the absorption of emission, which involves the exchange of emission between objects. All objects have emission fields, and the absorption of emission is via the emission field of objects. An emission field is a gravitational field, so all objects have a gravitational field. There is no more fundamental, materialistic, and scientific explanation for attraction than the absorption and exchange of emission.  This rather simple explanation for the cause of attraction has far reaching ramifications.

The two nuclear forces, the electrostatic force, and gravity have the same mechanism. Establishment physics sees these forces as separate. Establishment Physics is wrong. Everything from the smallest sub-atomic particle, to the largest possible galaxy absorbs and emits what can be described as emission or radiation or energy or light.

What is assumed to be empty space is composed of the emission (radiation or energy or light) of everything. Emission travels through interaction with emission, and can be detected as wavelengths. These wavelengths are constructed through the convergence of different levels of emission. Establishment physics does not ask, let alone answer, the question of how the detected wavelengths are constructed. The emission of an object disperses as it travels through space and this involves it encountering the emission of others objects. If the emission encountered is of less density, then the result will be an increase in wavelength. From the perspective of the Earth, this sees the detection of the increasing wavelengths of the emission from galaxies and stars. The abstractionist paradigm, by way of Relativity theory, even accepts that when emission (light) is traveling opposite to the direction of an emission (gravitational) field, its wavelength is increased and its frequency is decreased.

For some, the fact that emission can be detected as both a particle (a photon) and a wave is inexplicable. However, this dual nature is resolved once you see a wave of emission as composed of dispersing or de-constructing particles and a particle as a fusion or construction of emission which is made of matter and as having an emission field. If a photon was not made of matter then it would not leave an impression upon a screen when projected towards the screen. The idea that emission (light) is massless (matterless) is not a fact but a mistaken assumption of the abstractionist paradigm.

We do not see through an otherwise empty space. We see with space in the sense of the emission of objects, in the form of their image, traveling through the emission that is space and impacting upon our retinas and being processed by our brains. The idea that the space between us couldn’t be composed of matter (actually dispersed matter) because we wouldn’t be able to see through it, is another example of naive realism.

As emission travels through interaction (absorption and emission) with emission, its speed is relative to the density of the emission through which it travels. It could not possibly have a specific speed throughout the Universe as claimed by physics. Physics sees emission (light) travelling through space as a vacuum. Space is not a vacuum. If you measured the speed of emission at a distance above the surface of the Earth, where the emission field is less dense than at the surface, it would be greater than at the surface. The fact that the difference would be very small and not readily measureable is beside the point. Emission travelling from the Earth to the Moon would increase in speed as it left the Earth and at the mid-point of their emission fields it would begin to slow down as it approached the Moon. It’s merely an assumption on the part of the abstractionist paradigm that the speed of light is “universally” constant. The abstractionist paradigm has an inadequate understanding of how emission travels. The measurement called “a light year”, has no scientific validity.

The Earth is attracted to the Sun through absorbing the emission of the Sun via the Earth’s emission (gravitational) field. Part of the emission absorbed by the Earth's emission field reaches its core and maintains the core’s active state.

In 1954 a French economist named Maurice Allais observed that a pendulum moved faster during a solar eclipse. This has become known as the “Allais Effect”, and has been unexplained by physics. When the Moon is in front of the Sun it blocks part of the emission (gravitational) field of the Sun resulting in less absorption of emission by the emission field of the Earth. This slight reduction in the density of the emission (gravitational) field, results in less downward attraction of the pendulum allowing it to swing faster.

The gravity of the Earth would also be reduced when it's at its farthest distance from the Sun during its yearly orbit. If you wanted a “gravity assist” in obtaining a high or long jump record, do it when the Earth is at aphelion on the 3rd of July and during a solar eclipse.

It has been observed that the rotation of the Earth is decreasing, and that the distance between the Earth and the Moon is increasing. Establishment physics claims that the decrease in the rotation of the Earth and the moving away of the Moon derives from a tidal bulge in the Earth. It’s claimed that as the Earth tries to drag this bulge along its rotation is decreased, and that this loss of angular momentum is transferred to the Moon lifting it into a higher orbit.

The only way that the decrease in the rotation of the Earth (the loss of angular momentum) could cause the Moon to move away would be if the rotation of the Earth was responsible for the Moon's distance from the Earth in the first place; which is not the case.

Is the Moon moving away from the Earth due to a decrease in the density of the Earth’s gravitational field? Is it due to an increase in the density of the gravitational field of the Sun? Is it due to a decrease in the density of the Moon’s gravitational field?

Establishment physics accepts that gravity involves acceleration and not merely uniform motion. However, it offers no explanation for why this should be the case. With the absorption of emission explanation, absorption leads to increased matter that results in increased absorption capacity, and it’s this that underpins the fact that gravity involves acceleration and not merely uniform motion.

I came to the absorption of emission explanation of attraction through conducting a simple electrostatic experiment. When I rubbed a glass rod it attracted a suspended pith ball. Establishment physics sees this as being the result of dislike charges attracting, and offers no explanation of how this comes about. I decided that rubbing the glass rod increased the emission of the rod and that this emission was absorbed by the pith ball resulting in the attraction. If the glass rod were not rubbed, it would still have emission and could still attract a pith ball through the pith ball absorbing the emission.

Absorption and emission is the mechanism that underpins the abstractionist concept of charge, so that as an explanation it’s more fundamental (and superior) to that offered by establishment physics. It’s no mere coincidence that the formula for gravity takes the same form as that for electrostatic attraction. Electrostatic attraction is gravitational attraction.

Read the rest of this entry »

(added 8 days ago) / 13 views

WWU biologist: Loss of plant biodiversity could affect ecosystems as much as global climate change, pollution KIE RELYEA - THE BELLINGHAM HERALD

Posted in : Biology

(added 9 days ago)

The scientists gathered at a workshop in California knew that shrinking biological diversity affects an ecosystem's plant growth, based on the many experiments that have shown just that. "But how big are those effects, really?" said David Hooper, a biology professor at Western Washington University and one of the scientists at that workshop in the National Center for Ecological Analysis and Synthesis in Santa Barbara.

Specifically, how do those impacts stack up against other human-caused environmental changes, such as climate change and pollution?

"None of us really knew the answer to that," said Hooper, a plant and ecosystem ecologist. So researchers looked for the answer on a global scale - delving primarily into plant diversity - by analyzing the large amount of data already available in the scientific literature. "We were looking for broad patterns across many different studies," Hooper said.
Their finding?

Loss of biodiversity appears to affect ecosystems just as much as pollution, climate change and other major stressors on the environment, according to a new study from the international research team - based at nine institutions in the U.S., Canada and Sweden - headed by Hooper. Their results were published online in the journal Nature on Wednesday, May 2. Hooper was the lead author of that paper.

The researchers were surprised by what they found. Many thought the effects would be relatively small, according to Hooper. Their study showed that future species loss could reduce plant production as much as global warming and pollution. It marks the first comprehensive effort to make such a comparison. To arrive at their conclusion, Hooper and the other researchers created a database that drew from 192 experiments in which species richness, i.e. the number of plants in a given plot or area, was manipulated and then the impact on ecosystems examined.

They looked at ecosystems on land as well as in freshwater and marine ecosystems. They compared how global environmental stressors affected two activities important in all ecosystems: plant growth and the decomposition of dead plants by bacteria and fungi. The latter is important because it recycles nutrients back into ecosystems, Hooper explained.
It's important in another way as well.

"If not for decomposition, we would be buried under dead plant and dead animal material," he added.
As for how plant biodiversity loss compared to other global environmental changes, the researchers projected that:

• Where plant species loss this century was 1 to 20 percent - considered to be on the lower range of projections - the impacts on plant growth were projected to be negligible. And changes would be ranked low compared to other projected environmental changes.

• 21 to 40 percent of loss could reduce plant growth by 5 to 10 percent. That effect is comparable to the expected impacts of climate warming and increased ultraviolet radiation due to ozone loss, they said.

• At higher levels of extinction, 41 to 60 percent of species, the impacts ranked with major factors of environmental change such as nutrient pollution, acid deposition on forests and ozone pollution. (By extinction, the scientists are referring to the loss of a plant species in a particular area, not that it's been wiped off the planet.) "Within the range of expected species losses, we saw average declines in plant growth that were as large as changes seen in experiments simulating several other major environmental changes caused by humans," Hooper said.

Which of the study's projected plant extinction rates could occur in the next hundred years?
"We don't know," Hooper said. "This is a possibility. We're not saying it is going to happen. The best science we have right now is should this happen, this is some of the effects we're going to have. Personally, I would rather avoid going there."

Studies conducted during the past two decades have shown that biologically diverse ecosystems are more productive, and so concern has been growing about high rates of modern extinctions caused by habitat loss, over-harvesting and other environmental changes caused by humans. And that, in turn, has stirred fears that nature's ability to provide food, clean water and a stable climate could be reduced.

Still unknown, researchers said, is how diversity loss and other large-scale environmental changes will interact and alter ecosystems. They said the results highlight the need for stronger local, national and international efforts to protect biodiversity because its loss will have a major impact on the planet.
Hooper brings that home by talking about the Puget Sound being "one of the most beautiful areas in the world."

"Even so, in and around the Puget Sound I think there's something like at least 25 species that are threatened with extinction. Those range from small wildflowers up to Chinook salmon and orca whales," Hooper said. And some of those we could lose "with barely a whisper," he said. "But others are really important both economically and culturally," Hooper said. "It's up to society to take the action necessary to prevent the loss of those species."

Read the rest of this entry »

(added 9 days ago) / 15 views

Case study: Biology revision - Gillian McCloy

Posted in : Biology

(added 14 days ago)

Ballyclare High School pupil Gillian McCloy scored the highest mark in Northern Ireland in GCSE biology last year. With 10 A* and an A at GCSE level, there were many avenues of study open to her. She chose biology, chemistry, maths and art to study for ‘A’ Level. Gillian found out quickly that she preferred physics so took the decision to drop biology. It was after this that she got the news that she had achieved the top GSCE mark in the subject!

She is hoping to study physics at Oxford with a view to working in the astrophysical field someday. With this in mind Gillian spends a lot of her spare time sketching and studying the night skies and she is more than happy with her subject choices as each plays an important role in astronomy. Gillian commented; “I was really surprised when I got the news about my result and obviously, delighted!

“I think I did so well because I tried to make studying fun. I tried a few different techniques and my sister, a doctor, helped a lot. I found reading notes and then saying them aloud helped make the information stick. I also play guitar so enjoyed making up songs and rhymes to help me remember scientific formulas!

“My favourite place to revise was my bedroom with peace and quiet to hear myself think. I started studying at Easter, taking a different subject each day, depending on my mood. I didn’t stick to a timetable but I know this works for some people.”

Gillian’s top GSCE biology revision tips:

1 – Make revision fun so you don’t dread it. I still remember my songs and rhymes!

2 – Visit the exam board’s website. Go through past papers and look for recurring questions. This helped me understand how biology papers are marked and what examiners want to see.

4 – The Internet is a great resource but don’t get distracted by facebook! I ‘googled’ lots of terms and definitions.

5 – It can help to study with a friend – I found it easier to recall ‘study’ conversations than notes.

3 – Read ‘around’ the subject as there is usually a ‘surprise’ biology question. Last year it was on breast milk which we hadn’t studied in class!

Read the rest of this entry »

(added 14 days ago) / 19 views

Plant Cell Biologist Receives Top Scientific Honor

Posted in : Biology

(added 15 days ago)

RIVERSIDE, Calif. – Natasha V. Raikhel, a distinguished professor of plant cell biology at the University of California, Riverside and one of the most highly-cited researchers in plant science, has been elected a member of the National Academy of Sciences (NAS) for her excellence in original scientific research.
Elected along with 83 other members and 21 foreign associates from 15 countries, Raikhel brings the number of current UC Riverside faculty elected to NAS to five.

There are currently just over 2,150 active NAS members. Membership in the NAS is one of the highest honors given to a scientist or engineer in the United States.  Among the NAS’s renowned members are Albert Einstein, Robert Oppenheimer, Thomas Edison, Orville Wright, and Alexander Graham Bell.
“Dr. Raikhel’s election to the NAS is a well-deserved tribute to her achievements and those of the Institute for Integrative Genome Biology, which she founded,” said Marylynn V. Yates, the dean of UCR’s College of Natural and Agricultural Sciences. “We are very fortunate to have someone with her vision and passion for science as a member of our faculty.”

At UCR, Raikhel holds the Ernst and Helen Leibacher Endowed Chair in Plant Molecular, Cell Biology & Genetics.  The director also of UCR’s Center for Plant Cell Biology, she has been advancing knowledge in plant processes in her long and distinguished career. “Plants can live without us, but we cannot live without plants,” she tells her students.

Early in her career, Raikhel recognized the importance of the genomic revolution to biology and pioneered the use of chemical genomics, which uses simple chemicals to alter the functions of specific proteins without killing the plant, to advance our knowledge of plant processes.

Her lab is actively harnessing the high-throughput capacity of new multidisciplinary methods, such as engineering modeling tools and computational biology, to integrate molecular information into a more comprehensive “systems biology” view of the organism. Her studies of the molecular mechanisms governing trafficking in plants and of genetic control of “cell wall polysaccharide biosynthesis” — one of the most challenging problems in plant biochemistry — have made lasting scientific contributions in plant biology.

“Natasha is being recognized for pioneering the use of novel genetic and biochemical techniques to elucidate the organization and function of the secretory system in plant cells,” said Susan Wessler, a distinguished professor of genetics at UCR and a member and home secretary of the NAS. “We have been close friends for over 30 years and I am incredibly proud of her accomplishments. We can now work together to improve both UCR and the NAS!”

Originally slated to be a concert pianist, Raikhel chose biology over the conservatory – a fortuitous choice for today she enjoys an international reputation in plant cell biology. She is a world-class expert in the area of secretory trafficking, explaining the key role of the vacuole and its numerous functions essential for plant survival.

Frequently invited as a keynote speaker to national and international conferences and symposiums, she has contributed to the field of plant biology for three decades and has guided many graduate students and post-doctoral scholars in their research. She has served on numerous government and industry advisory boards and editorial boards, and as editor-in-chief of one of the oldest and most well-respected plant science journals, Plant Physiology, from 2000-2005.

Her numerous distinguished awards include a Guggenheim Fellowship, the Women in Cell Biology Senior Award from the American Society for Cell Biology, the Stephen Hales Prize from the American Society of Plant Biologists, and a Senior Fellowship from the Japan Society for Promotion of Science.
Raikhel came to UCR in 2001 from Michigan State University, East Lansing. She received her Ph.D. in cell biology from the Institute of Cytology, Academy of Sciences, Leningrad, Russia. She did postdoctoral research at the University of Georgia, Athens, where she was later an assistant research scientist. She was on the faculty at Michigan State University for about ten years.

“There are more deserving people than awards, so it is wonderful that the NAS recognized our research in plant cell biology and I am eternally grateful,” Raikhel said. “I share this recognition with my former and current students and postdocs as this award is a result of team work.  I also could not have been where I am now without the love and support of my wonderful family, my late parents, and my dear friends.

As Lao Tzu said, ‘A good traveler has no fixed plans and is not intent on arriving’ — this is the beauty of science!”The NAS is a private, nonprofit honorific society of distinguished scholars engaged in scientific and engineering research, dedicated to the furthering science and technology and to their use for the general welfare. Established in 1863, the academy has served to “investigate, examine, experiment, and report upon any subject of science or art” whenever called upon to do so by any department of the government.

Read the rest of this entry »

(added 15 days ago) / 24 views

In Physics, the Arrow of Time Gets Bent

Posted in : Physics

(added 16 days ago)

By Deepak Chopra, MD and Menas Kafatos, Ph.D., Vice Chancellor of Special Projects and Director, Fletcher Jones Endowed Professor of Computational Physics, Chapman University


Out of sight, and for most people out of mind, the physical world has been vanishing.  For over a hundred years quantum theory has shown that the solid objects of the physical world are made of invisible energy clouds. Atoms have no fixed physical properties until they are measured; therefore, it remains to be shown why our world of everyday experience feels solid in the first place. At the same time, other properties we take for granted are dissolving. Einstein described time as dependent on frames of observation. Now it seems that in the world of quantum phenomena it can appear to move backwards.

This is a fascinating topic, and one that raises more questions about things we take for granted. Quantum physicists at the University of Vienna were looking at particles of light that are either entangled or separable. These are technical terms going back to the era of Einstein and Schrodinger. If two particles are entangled, they will exhibit synchronized behavior no matter how far apart they are in space. As soon as one particle is measured, its exact counterpart will show up in the entangled twin state, even if they are far, far away from each other. In other words, this "action at a distance" defies the speed of light.  Einstein could not accept the consequences of quantum entanglement, and so he added the word "spooky" to action at a distance.

Yet quantum behavior is frequently spooky, and experiments have validated entanglement very soundly. In a recent article a useful analogy was given. Two entangled particles are like a pair of tumbling dice. If you stop one to see which number comes up, the other dice must show the same number; it has no other choice. If the two dice are separable, then the measurement of one doesn't affect the other. Being separable seems normal to us. We never expect two dice to exactly match. If they did, Las Vegas would go out of business, since chance would disappear.

Now on to time. We expect time to move forward, the so-called arrow of time. Past, present, and future constitute the normal progression of events. For the same reason, cause precedes effect. It would be bizarre to bleed before you cut yourself shaving or to hear a car crash before the two vehicles collided. In the quantum world, however, certain phenomena have arisen known as retro causation, and exactly as it sounds, a future measurement appears as if it is affecting a past event. This would be a form of entanglement that reaches backward in time, a new form of spookiness.

Physics has depended for decades on "thought experiments," where a new concept predicts what will happen before a physical experiment proves or disproves the predicted result. In this case, the Viennese team was working to prove "delayed-choice entanglement swaps."  As a thought experiment, this has existed for over a decade.  Let us follow the team's description closely:

Four photons, made of two entangled pairs, are produced (think of them as four tumbling dice waiting to be measured). One photon from each pair is sent to a physicist named Victor. He will be assigned the task of measuring them. The two remaining photons are put in separate packages, one sent to a physicist named Alice, the other to a physicist named Bob. The three physicists now have their sealed packages of photons that have not been measured yet.

Victor can choose between two kinds of measurements. If he decides to measure his two photons in a way such that they are forced to be in an entangled state, then Alice's and Bob's two photons also become entangled. But if Victor chooses to measure his particles individually, Alice's and Bob's photons end up in a separable state.  This is a point that Einstein was stuck on. He couldn't believe the assertion made by Bohr and Heisenberg that the mere act of measurement by an observer determines where a particle will be. But accepted quantum theory has shown that particles have no physical characteristics until they are measured. For a long time this has been true for position in space. Now it seems that where a particle is in time also depends on measurement.

Modern quantum optics allowed the team to delay Victor's choice and measurement with respect to the measurements which Alice and Bob perform on their photons. As the lead author in Vienna describes it, "We found that whether Alice's and Bob's photons are entangled and show quantum correlations or are separable and show classical correlations, can be decided after they have been measured." In layman's terms, what you do today can affect what happened yesterday.  Or, perhaps, to put it in better way, the future and the past are entangled, in a way that classical physics could not explain it. The experimenters are working on a quantum scale billions of times smaller than everyday events, and rather than claiming to change the past, they say that their experiment "mimics" the effect of turning time's arrow around.

So no one is saying -- yet -- that present causes can change past effects. The mystery still remains over how entanglement, defying the speed of light and now the arrow of time, actually relates to the "naive classical world," which is to say, the everyday things we take for granted. Our own bias is for expanding the observer effect more and more, until science accepts that awareness is key to everything. We are making reality through our role as conscious agents. But that's an argument for another day -- perhaps yesterday if we get around to it.

Read the rest of this entry »

(added 16 days ago) / 23 views

Biodiversity: Biologists solving the chytrid puzzle; new research offers ‘glimmer of hope’ for dwindling amphibians

Posted in : Biology

(added 17 days ago)

SUMMIT COUNTY — California-based biologists say their latest study on the deadly chytrid fungus that’s killing amphibians — including Colorado’s boreal toads — offers a “glimmer of hope” that there may be some sort of treatment that could help save threatened frogs and salamanders.

Around the world, the fungus has wiped out 200 species of amphibians. In some hard-hit parts of the West, frog numbers have dropped 95 percent in less than 10 years.

Scientists have known for a while that the fungus affects the highly permeable skin of amphibians and the latest study shows that thickening disrupts fluid and electrolyte balance, depleting sodium and potassium levels and causing cardiac arrest and death.

“The mode of death discovered in the lab seems to be what’s actually happening in the field,” said San Francisco State biologist Vance Vredenburg, “And it’s that understanding that is key to doing something about it in the future.”

The findings confirm what researchers have seen in carefully controlled lab experiments with the fungus, but SF State biologist Vance Vredenburg said the data from wild frogs provide a much better idea of how the disease progresses.

At the heart of the new study are blood samples drawn from mountain yellow-legged frogs by Vredenburg, who is an assistant professor of biology at SF State, and colleagues in 2004, as the chytrid epidemic swept through the basins of the Sierra Nevada range.

“It’s really rare to be able to study physiology in the wild like this, at the exact moment of a disease outbreak,” said UC Berkeley ecologist Jamie Voyles, the lead author of the study. Unfortunately, it is a study that can’t be duplicated, at least not in the Sierra Nevada. Frog populations there have been devastated by chytrid, declining by 95 percent after the fungus was first detected in 2004. “It’s been really sad to walk around the basins and think, ‘wow, they’re really all gone,’” Vredenburg said. The chytrid fungus attacks an amphibian’s skin, causing it to become up to 40 times thicker in some instances. Since frogs depend on their skin to absorb water and essential electrolytes like sodium from their environment, Voyles and her colleagues knew that chytrid would disrupt fluid balance in the infected amphibians, but were surprised to find that electrolyte levels were much lower than anticipated for the Sierra Nevada sample.

“It’s clear that this fungus has a profound effect in the wild,” Voyles said. “Wildlife diseases can be just as devastating to our health and economy as agricultural and human diseases,” says Sam Scheiner, NSF program officer for EEID. “Bd has been decimating frog and salamander species worldwide, which may fundamentally disrupt natural systems. This study is an important advance in our understanding of the disease, a first step in finding a way to reduce its effects.”
Scientists want to learn as much as they can about how chytrid affects wild amphibians, with the hope that these findings will lead to better treatments for the infection.

For instance, Voyles said, the new study suggests that individual frogs being treated for the infection might benefit from having electrolyte supplementation in the advanced stages of the disease.
Researchers like Vredenburg already are experimenting with different ways of treating individual frogs, such as applying antifungal therapies or inoculating the frogs with “probiotic” bacteria that produce a compound that kills the fungus.

“The disease is not very hard to treat in the lab with antifungals. We know we can treat animals there,” Vredenburg said. “But in nature, the disease is still a moving target.”It is still unclear exactly how chytrid spreads across a region, and which frogs might be susceptible to re-infection after treatment. Earlier this year, Vredenburg and colleagues published a paper showing that a common North American frog might be an important carrier of the infection. The study is published online by peer-reviewed journal PLoS ONE and funded through the joint National Science Foundation and National Institutes of Health program, Ecology and Evolution of Infectious Diseases.

Read the rest of this entry »

(added 17 days ago) / 24 views

it is a directional transformation cell biology gene technology. laser therapy and so on

Posted in : Biology

(added 19 days ago)

weak resistance of the long-term use can cause certain effect to health. some permanent hair coloring agents take raw material — benzene two amine more irritating, it is a directional transformation cell biology gene technology. laser therapy and so on, with the rule to go, Postoperative can obviously improve the quality of life of husband and wife,resulting in serious condition development .Malignant tumor ,The third kind is eruptive type: skin lesions as red macules or papules,Second is a new biological type: lesional skin showed verrucous,However ,boiled drinking , has been shedding skin, favored by customers. do at least two oral cavity cleaning.

Read the rest of this entry »

(added 19 days ago) / 25 views