- Dec 24, 2001
- Albuquerque, NM
Stat said:The new study found that Black residents in counties with more Black physicians — whether or not they actually see those doctors — had lower mortality from all causes, and showed that these counties had lower disparities in mortality rates between Black and white residents. The finding of longer life expectancy persisted even in counties with a single Black physician.
I wonder whether the share of black doctors is mostly a proxy to the share of wealth owned by the black people in that county.NPR, 21 April 2023 - "Life expectancy improves for Black people who live near Black doctors, new study finds"
Stat, 14 April 2023 - "In counties with more Black doctors, Black people live longer, ‘astonishing’ study finds"
Journal of the American Medical Society, 14 April 2023 - "Black Representation in the Primary Care Physician Workforce and Its Association With Population Life Expectancy and Mortality Rates in the US"
I believe there's a case about race-based affirmative action in college admissions before the US Supreme Court right now. Gosh, I wonder how they're likely to rule..?
So what are the practical applications for such a technology?The biggest Schrödinger’s cat ever
A sliver of a sapphire crystal close to half the mass of an eyelash has been put in a ‘cat state’: a state of quantum superposition in which its atoms move in two directions at once. This is reminiscent of Schrödinger’s cat, a thought experiment that illustrates quantum superposition by means of a feline that appears to be simultaneously dead and alive until it is observed. The sapphire cat is more than 100 trillion times the mass of the molecules previously put in cat states. “We’ve reached a new regime where quantum mechanics apparently does work,” says physicist and study co-author Yiwen Chu.
My reading of this is that neural activity in the region of the tumor enhances tumor growth (and tumor growth enhances neural activity in the region). So if the patients is using that region of their brain by thinking about something for which it is responsible for, they do in some way enhance tumor growth.How thought itself can drive tumour growth
I have to admit I have not got my head around it. For a change the write up is paywalled and the primary literature is open access, but I have not put in the time and effort to really figure out exactly what that clickbait headline means.
Few effective treatments are available for a common and universally fatal type of adult brain tumour called a malignant glioma. Although these tumours exist exclusively in the central nervous system, the interactions between malignant glioma cells and the 86 billion neurons in the human brain are poorly understood. This is particularly relevant because most people with the disease develop progressive cognitive decline that robs them of quality of life during their final months.Writing in Nature, Krishna et al. show that malignant gliomas can grow by modifying brain circuitry, thus taking cognitive function away from their host and ultimately leading to death. These insights might lead to fundamentally new approaches to glioma treatment and provide a means of limiting cognitive decline in affected individuals.
Fig. 1: High-grade gliomas remodel long-range functional neural circuits.
Fig. 4: Intratumoural connectivity in patients with high-grade glioma is correlated with survival and TSP-1.
So what are the practical applications for such a technology?
Seeing quantum effects in non quantum environments enhances our understanding of them and makes what can seem magical and unreal to many, a part of our physical world.
What we see around us every day is surely driven by quantum events everywhere, but for the most part we engage our brains at the quantum level. The more that quantum stuff can be directly related or tied to the chemistry and physics most of us are familiar with, the better. I see it as similar to when microscopes gave us our first looks at very tiny things we never dreamed were there doing things. "Normal" reality changes and we get closer to grasping our world as a dynamic and ongoing interaction quarks and their friends.What do you mean with non-quantum environment? You would be hard-pressed to find any environment, where quantum effects are not involved in some way. In any case, I am pretty sure that the sample has been cooled to millikelvin temperatures. At that temperature, anything is a quantum environment.
Our only direct perception of quantum physics is limited to emerging phenomenons that are usually described by Newton's laws of physics. As such, many aspects of quantum physics such as entanglement and (in that above case) superposition are very difficult to understand beyond pure conceptual abstractions. So yeah, making them emerge at something close to our scale is absolutely incredible.What we see around us every day is surely driven by quantum events everywhere, but for the most part we engage our brains at the quantum level. The more that quantum stuff can be directly related or tied to the chemistry and physics most of us are familiar with, the better. I see it as similar to when microscopes gave us our first looks at very tiny things we never dreamed were there doing things. "Normal" reality changes and we get closer to grasping our world as a dynamic and ongoing interaction quarks and their friends.
Is the unicellular / multicellular divide different types? If so, we have demonstrated evolution between types in the lab.
I may well have my YEC law wrong, but is it not supposed to be impossible to get evolution between types? Can there be a larger divide, at least with the eukaryotes, than between single and multi cellular organisms? Well, we have got a yeast to evolve multicellularity in 600 generations.