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Apr 11, 2024

About Quintessence: the time-evolving form of energy which drives the expansion of the universe

Posted by in categories: cosmology, quantum physics

In this weeks continuation article of Dark Energy and what it is, we will be looking at Quintessence: which could be what dark matter is made of.

Quintessence. It is a “time-evolving and spatially dependent form of energy with negative pressure sufficient to drive the accelerating expansion” (Cladwell R.R. and Steinhardt P.J., 2000a, para 41).

Since it has negative pressure, it also has negative gravity. This negative gravity could explain the expansion of the universe. There are many models to describe quintessence, the simplest being, the fact that quintessence might be a quantum field with very long wavelength stretching across the universe. Negative gravity arises in this field by the negative pressure, and we can calculate the pressure by subtracting the Kinetic and Potential energies of the rate of oscillations in the field strength. This model is also successful, because it explains how the density of Dark Energy, or quintessence, changed over time, and fits in with the idea that dark energy must have been insignificant during the early universe to allow the large scale structures to form.

Apr 11, 2024

Ray Kurzweil & Geoff Hinton Debate the Future of AI

Posted by in categories: military, Ray Kurzweil, robotics/AI

The potential of AI, particularly in narrow domains, is immense and has the capability to revolutionize various fields, but it also poses significant dangers if not carefully managed and understood Questions to inspire discussion What are the potential dangers of AI? —The potential dangers of AI include the possibility of open sourcing technology leading to the creation of atomic bombs and the dangers of open sourcing large language models for bad purposes.

Apr 11, 2024

Depleting Stem Cells Improves Immunity

Posted by in category: biotech/medical

Aging is a life process where the body slowly breaks down and becomes more vulnerable to external stimuli. For example, bones in older individuals become frail and muscle deteriorates. Additionally, older individuals are more susceptible to disease with a compromised immune system. In many cases there are protocols and guidelines in place to protect those with high susceptibility to disease. During the COVID-19 pandemic older patients had to be extremely careful to avoid contracting COVID-19.

Unfortunately, aging is a natural part of life. However, scientists are working to make the process of aging a little easier. Due to the increased average lifespan, aging has been a progressively growing field. Physicians and scientists are working to understand how we age and if there are secrets to be uncovered that would help avoid, prevent, or cure age-related diseases, such as cancer.

Stem cells are self-renewing cells in the body with the ability to differentiate into any cell type. The outcome to which final cell type it turns into is dependent on what the body needs. Regarding the immune system, the body generates more myeloid immune cells. Aging of the immune system is best characterized by an imbalance of these immune cells. Other immune cells including lymphoid cells related to adaptive immunity are reduced in number while myeloid cells and inflammatory pathologies are increased. Many believe that stem cells may be the cause of this imbalance.

Apr 11, 2024

Scientists uncover key resistance mechanism to Wnt inhibitors in pancreatic and colorectal cancers

Posted by in category: biotech/medical

Scientists at Duke-NUS Medical School have uncovered why some pancreatic and colorectal cancers fail to respond to Wnt inhibitors, a promising new class of cancer drugs currently under development for these cancers. Their discovery, published in Science Advances, not only offers a new cancer therapy target but also a potential screening tool to identify those patients who will not benefit from this new therapy once it becomes available.

Apr 11, 2024

CAR T Cell Therapies Last Longer, Work Better with FOXO1 Protein

Posted by in category: biotech/medical

New research shows that FOXO1 is required for memory in T cells and associated with more durable clinical responses to CAR T cell therapy.

Apr 11, 2024

Faster aging linked to cancer rates in young adults, study finds

Posted by in categories: biotech/medical, life extension

Researchers from Washington University School of Medicine suggest accelerated biological aging may be driving early-onset cancer rates in young people.

Apr 11, 2024


Posted by in category: futurism

Smarter than the average cell culture.

Shared with Dropbox.

Apr 11, 2024

Breakthrough Parkinson’s Gene Discovery Sheds Light on Evolutionary Origin

Posted by in categories: biotech/medical, neuroscience

Parkinson’s disease is a neurodegenerative movement disorder that progresses relentlessly. It gradually impairs a person’s ability to function until they ultimately become immobile and often develop dementia. In the U.S. alone, over a million people are afflicted with Parkinson’s, and new cases and overall numbers are steadily increasing.

There is currently no treatment to slow or halt Parkinson’s disease. Available drugs don’t slow disease progression and can treat only certain symptoms. Medications that work early in the disease, however, such as Levodopa, generally become ineffective over the years, necessitating increased doses that can lead to disabling side effects.

Continue reading “Breakthrough Parkinson’s Gene Discovery Sheds Light on Evolutionary Origin” »

Apr 11, 2024

Testing drugs on mini-cancers in the lab may reveal best treatment

Posted by in categories: biotech/medical, innovation

The next innovation in cancer treatment could be to test all possible drugs on thousands of miniature versions of a person’s tumour, grown in the lab, to see which works the best. The technique, sometimes called drug sensitivity testing, may have already helped a few children with advanced cancer live for longer than the standard approach.

It could eventually become routinely used for everyone with cancer, says Diana Azzam at Florida International University in Miami. “I would say it will help guide treatments in any [cancer], whether it’s aggressive or not.”

Apr 11, 2024

AI Tool Helps Doctors Pick Optimum Cancer Treatment For Patients

Posted by in categories: biotech/medical, robotics/AI

An Israeli medtech company is using artificial intelligence to help oncologists decide the best and most effective course of treatment for their cancer patients.

OncoHost’s main focus is on treatments for non-small cell lung cancer (NSCLC). According to the World Cancer Research Fund, lung cancer is the second most common cancer (after breast cancer) and responsible for 12.2 percent of new cases of the disease.

In fact, OncoHost CEO Ofer Sharon tells NoCamels, lung cancer “is the number one killer” among patients with this form of the disease.

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