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Category: biotech/medical – Page 3,076

Innovative Transient Battery Is Designed To Self-Destruct In 30 Minutes

A Mission Impossible Battery that self destructs.

Here at HEXAPOLIS, we have talked about biodegradable electronics that are designed to automatically dissolve once their job is done. Such self-destructing devices could be especially useful in the world of medicine, where implants currently have to be surgically removed, as well as the military. As part of a new research, scientists at the Iowa State University have devised an innovative transient battery, which as its name suggests can melt away in less than 30 minutes.

Technological advancements in recent years have allowed researchers to develop an array of self-destructing electronics that are capable of performing specific functions. Up until now, however, these devices were driven by external power sources. Previous attempts to create transient batteries largely gave birth to contraptions that lacked power, stability and a substantial shelf life. More often than not, they were also quite slow in demolishing themselves. Speaking about the research, recently published in the Journal of Polymer Science, Part B: Polymer Physics, the team stated:

Unlike conventional electronics that are designed to last for extensive periods of time, a key and unique attribute of transient electronics is to operate over a typically short and well-defined period, and undergo fast and, ideally, complete self-deconstruction and vanish when transiency is triggered. Any device without a transient power source isn’t really transient. This is a battery with all the working components. It’s much more complex than our previous work with transient electronics.

Genetic Engineering Will Change Everything Forever – CRISPR

Designer babies, the end of diseases, genetically modified humans that never age. Outrageous things that used to be science fiction are suddenly becoming reality. The only thing we know for sure is that things will change irreversibly.

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Second layer of information in DNA confirmed

Leiden theoretical physicists have proven that DNA mechanics, in addition to genetic information in DNA, determines who we are. Helmut Schiessel and his group simulated many DNA sequences and found a correlation between mechanical cues and the way DNA is folded. They have published their results in PLoS One.

When James Watson and Francis Crick identified the structure of DNA molecules in 1953, they revealed that DNA information determines who we are. The sequence of the letters G, A, T and C in the famous double helix determines what proteins are made ny our cells. If you have brown eyes, for example, this is because a series of letters in your DNA encodes for proteins that build brown eyes. Each cell contains the exact same letter sequence, and yet every organ behaves differently. How is this possible?

Directly reprogramming a cell’s identity with gene editing

Researchers have used CRISPR—a revolutionary new genetic engineering technique—to convert cells isolated from mouse connective tissue directly into neuronal cells.

In 2006, Shinya Yamanaka, a professor at the Institute for Frontier Medical Sciences at Kyoto University at the time, discovered how to revert adult , called fibroblasts, back into immature stem cells that could differentiate into any cell type. These so-called induced won Yamanaka the Nobel Prize in medicine just six years later for their promise in research and medicine.

Since then, researchers have discovered other ways to convert cells between different types. This is mostly done by introducing many of “master switch” genes that produce proteins that turn on entire genetic networks responsible for producing a particular cell type.

How Nanotech Will Lead to a Better Future for Us All

How do we gain the immense benefits of advanced nanotechnology while avoiding its potential misuse?

This was Christine Peterson’s big question when she co-founded the Foresight Institute, a non-profit think tank focused on nanotechnology, three decades ago. And she says it’s still her guiding focus today.

In the last decade, nanotechnology has advanced and is finding practical applications. Some teams are developing nanoscale patterns on medical implants that can stimulate bone cell growth and positive gene expression. Others are working to make guided nanoparticles that detect (and even destroy) cancer cells.

Living Forever Has Never Been More Popular

My dispatch for Vice from the recent successful RAAD Festival—a giant gathering of longevity enthusiasts:

In less than a month, I’ll mark the two-year anniversary to my presidential campaign for the Transhumanist Party. My run for the White House was never about winning, but spreading the idea that Americans can achieve indefinite lifespans through science and technology—if only the government were to help out and put significant resources into the anti-aging field.

While the US government still hasn’t shown much interest in supporting longevity research for its citizens, the life extension movement is dramatically expanding around the world. Two years ago, the idea of speaking to 1000 longevity advocates in the same convention hall was a pipe dream. Most transhumanist conferences could barely get 100 people in the same room.

Last weekend in San Diego, that all changed. Billed as the biggest life extension festival in history, RAAD Fest took place from August 4–7. Over 1000 participants made it to the sold-out event, making it the largest group of transhumanists and longevity activists ever to assemble in one place.

The success of the festival signals the growing trend of the life extension movement. In the last few years, major companies like Google’s Calico and Human Longevity Inc. have formed to combat aging. Additionally, billionaires like Peter Thiel and Larry Ellison have funded longevity and anti-aging initiatives. Even Facebook founder Mark Zuckerberg recently called for science to end all disease this century.

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Long-term brain-machine interface use could lead to recovery in paraplegic patients

I know so many people who will benefit from this.

During the 2014 FIFA World Cup opening ceremony, a young Brazilian man, paralyzed from the chest down, delivered the opening kickoff. He used a brain-machine interface, allowing him to control the movements of a lower-limb robotic exoskeleton.

This unprecedented scientific demonstration was the work of the Walk Again Project (WAP), a nonprofit, international research consortium that includes Alan Rudolph, vice president for research at Colorado State University, who is also an adjunct faculty member at Duke University’s Center for Neuroengineering.

Barely two years after the demonstration, the WAP has released its first clinical report, published Aug. 11 in Scientific Reports. They report that a group of patients who trained throughout 2014 with the WAP’s brain-controlled system, including a motorized exoskeleton, have regained the ability to voluntarily move their leg muscles and to feel touch and pain in their paralyzed limbs. This, despite being originally diagnosed as having a clinically complete spinal cord injury — in some cases more than a decade earlier.

DNA dominos on a chip: Carriers of genetic information packed together on a biochip like in nature

Abstract: Normally, individual molecules of genetic material repel each other. However, when space is limited DNA molecules must be packed together more tightly. This case arises in sperm, cell nuclei and the protein shells of viruses. An international team of physicists has now succeeded in artificially recreating this so-called DNA condensation on a biochip.

Recreating important biological processes in cells to better understand them currently is a major topic of research. Now, physicists at TU Munich and the Weizmann Institute in Rehovot have for the first time managed to carry out controlled, so-called DNA condensation on a biochip. This process comes into play whenever DNA molecules are closely packed into tight spaces, for example in circumstances that limit the available volume.

This situation arises in cell nuclei and in the protein shells of viruses, as well as in the heads of sperm cells. The phenomenon is also interesting from a physical perspective because it represents a phase transition, of sorts. DNA double helices, which normally repel each other because of their negative charges, are then packed together tightly. “In this condensed state they take on a nearly crystalline structure,” says co-author and TU professor Friedrich Simmel.

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