What dead whales can teach us about finding aliens.
Posted on Big Think, direct link at.
Posted on BigThink.
A study published Wednesday in the JAMA Psychiatry journal shows that four key genetic variations are more common in military veterans who have taken their own life or considered it.
Scientists from Duke University in Durham, North Carolina, found the pattern while analyzing blood samples from a database that included 633,778 U.S. veterans, cross-referenced with the International Suicide Genetics Consortium of more than 549,000 individuals.
The obtained samples were sequenced to create genetic profiles compared to participants’ medical records, showing that 121,211 recorded cases of attempted suicide or thoughts about killing themselves.
If everything goes to plan, double SpaceX Falcon 9 launches are set to liftoff just minutes apart between 4 and 5 p.m. on Friday, Dec. 16.
Well… that’s me uninvited to the bioethicist’s christmas party…
Bioethicists frequently dictate what patients can and cannot do with their own bodies, and yet the general public very rarely questions this. Maybe it’s time we started to question what right bioethicists have to dictate what we can and cannot do with our own bodies?
‘We can learn a lot more using sound than we can with some of the other tools,’ says one researcher.
A message that resonates
Posted in biological, particle physics
Researchers from the University of Tsukuba have shown how adding a tiny resonator structure to an ultrafast electron pulse detector reduced the intensity of terahertz radiation required to characterize the pulse duration (ACS Photonics, “Streaking of a Picosecond Electron Pulse with a Weak Terahertz Pulse”).
To study proteins—for example, when determining the mechanisms of their biological actions—researchers need to understand the motion of individual atoms within a sample. This is difficult not just because atoms are so tiny, but also because such rearrangements usually occur in picoseconds—that is, trillionths of a second.
One method to examine these systems is to excite them with an ultrafast blast of laser light, and then immediately probe them with a very short electron pulse. Based on the way the electrons scatter off the sample as a function of the delay time between the laser and electron pulses, researchers can obtain a great deal of information about the atomic dynamics. However, characterizing the initial electron pulse is difficult and requires complex setups or high-powered THz radiation.
What are #dopamine, #serotonin, norepinephrine, glutamate, #GABA, acetylcholine? What does dopamine do?
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Video by Dr. Dawn Elise Snipes on integrative behavioral health approaches including counseling techniques and skills for improving mental health and reducing mental illness.
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Objectives.
~ Define Neurobiology.
~ For the following neurotransmitters, Dopamine, GABA, Serotonin, Acetylcholine, identify.
~ Their mechanism of action/purpose.
~ Where they are found.
~ Symptoms of excess & insufficiency.
~ Nutritional building blocks.
Human-like articulated neural avatars have several uses in telepresence, animation, and visual content production. These neural avatars must be simple to create, simple to animate in new stances and views, capable of rendering in photorealistic picture quality, and simple to relight in novel situations if they are to be widely adopted. Existing techniques frequently use monocular films to teach these neural avatars. While the method permits movement and photorealistic image quality, the synthesized images are constantly constrained by the training video’s lighting conditions. Other studies specifically address the relighting of human avatars. However, they do not provide the user control over the body stance. Additionally, these methods frequently need multiview photos captured in a Light Stage for training, which is only permitted in controlled environments.
Some contemporary techniques seek to relight dynamic human beings in RGB movies. However, they lack control over body posture. They need a brief monocular video clip of the person in their natural location, attire, and body stance to produce an avatar. Only the target novel’s body stance and illumination information are needed for inference. It is difficult to learn relightable neural avatars of active individuals from monocular RGB films captured in unfamiliar surroundings. Here, they introduce the Relightable Articulated Neural Avatar (RANA) technique, which enables photorealistic human animation in any new body posture, perspective, and lighting situation. It first needs to simulate the intricate articulations and geometry of the human body.
The texture, geometry, and illumination information must be separated to enable relighting in new contexts, which is a difficult challenge to tackle from RGB footage. To overcome these difficulties, they first use a statistical human shape model called SMPL+D to extract canonical, coarse geometry, and texture data from the training frames. Then, they suggest a unique convolutional neural network trained on artificial data to exclude the shading information from the coarse texture. They add learnable latent characteristics to the coarse geometry and texture and send them to their proposed neural avatar architecture, which uses two convolutional networks to produce fine normal and albedo maps of the person underneath the goal body posture.
Leading Canada’s Bio-Safety & Security R&D — Dr. Loren Matheson PhD, Defence Research and Development Canada, Department of National Defence.
Dr. Loren Matheson, Ph.D. is a Portfolio Manager at the Center For Security Science, at Defence Research and Development Canada (DRDC — https://www.canada.ca/en/defence-research-development.html), which is a special operating agency of the Department of National Defence, whose purpose is to provide the Canadian Armed Forces, other government departments, and public safety and national security communities with knowledge and technology.
With a focus on the chemical and biological sciences at DRDC, Dr. Matheson develops and leads safety and security R&D projects with government partners, industry and academia. In addition, she spearheaded an effort to establish a virtual symposium series, developed communications products to explain their program to national and international partners, and helped established a science communication position.
Dr. Matheson previously served as both a senior science advisor within the Office of the Chief Science Operating Officer, and National Manager, Plant Health Research and Strategies, at the Canadian Food Inspection Agency.
After 10 years consulting as a grants facilitator in clinical research, Dr. Matheson moved to the public service to pursue interests in science policy and security science.
Dr. Matheson holds a Ph.D. in Biochemistry from the University of Ottawa and spent her post-doctoral time at the University of Saskatchewan, working on cell and molecular biology, as well as at the Royal University Hospital Canadian Arthritis Network focusing on pediatric rheumatology.
Dr. Matheson is a 2022 Women in Defence and Security (WiDS) Emerging Leader (https://www.wids.ca/cms/Emerging-Leaders) for her exceptional work improving communications within DRDC’s Center for Security Science in her first year as a Defence Scientist.
PLEASE NOTE — the views and opinions expressed are those of the individual and should not be interpreted as representing official policies of the organizations or countries.