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Categories: Biology: Microbiology, Mathematics: Statistics

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Mathematics: Statistics
Published

Standard vital signs could help estimate people's pain levels      (via sciencedaily.com) 

A new study demonstrates that machine-learning strategies can be applied to routinely collected physiological data, such as heart rate and blood pressure, to provide clues about pain levels in people with sickle cell disease.

Mathematics: Statistics
Published

In era of online learning, new testing method aims to reduce cheating      (via sciencedaily.com) 

Engineers demonstrate how a testing strategy they call 'distanced online testing' can effectively reduce students' ability to receive help from one another in order to score higher on a test taken at individual homes during social distancing.

Mathematics: Statistics
Published

AI identifies social bias trends in Bollywood, Hollywood movies      (via sciencedaily.com) 

An automated computer analysis method designed by Carnegie Mellon University computer scientists makes it possible to track social biases across decades of Bollywood and Hollywood movies.

Mathematics: Statistics
Published

To find the right network model, compare all possible histories      (via sciencedaily.com) 

Scientists rarely have the historical data they need to see exactly how nodes in a network became connected. But a new article offers hope for reconstructing the missing information, using a new method to evaluate the rules that generate network models.

Mathematics: Statistics
Published

Like adults, children by age 3 prefer seeing fractal patterns      (via sciencedaily.com) 

By the time children are 3 years old they already have an adult-like preference for visual fractal patterns commonly seen in nature, according to researchers.

Mathematics: Statistics
Published

New computational method validates images without 'ground truth'      (via sciencedaily.com) 

Researchers have developed a computational method that allows them to determine not if an entire imaging picture is accurate, but if any given point on the image is probable, based on the assumptions built into the model.

Mathematics: Statistics
Published

COVID-19 'super-spreading' events play outsized role in overall disease transmission      (via sciencedaily.com)     Original source 

Researchers find COVID-19 super-spreading events, in which one person infects more than six other people, are much more frequent than anticipated, and that they have an outsized contribution to coronavirus transmission.

Mathematics: Statistics
Published

Researchers discover a uniquely quantum effect in erasing information      (via sciencedaily.com)     Original source 

Researchers have discovered a uniquely quantum effect in erasing information that may have significant implications for the design of quantum computing chips. Their surprising discovery brings back to life the paradoxical 'Maxwell's demo', which has tormented physicists for over 150 years.

Biology: Microbiology
Published

First all-human mouse model of inherited prion disease      (via sciencedaily.com) 

Human prion diseases include Creutzfeldt-Jakob disease (CJD) and Gerstmann-Sträussler-Scheinker disease (GSS). A new study reports a significant advance in the development of mouse models of human prion diseases. The study demonstrates spontaneous formation of disease-relevant, transmissible prion protein assemblies in mice bearing only human forms of the prion protein.

Biology: Microbiology
Published

Unraveling one of prion disease's deadly secrets      (via sciencedaily.com) 

A professor of biochemistry and molecular biology report an unanticipated role for prion nucleation seeds that enhances their ability to appear and resist curing.

Biology: Microbiology
Published

Household bleach inactivates chronic wasting disease prions      (via sciencedaily.com) 

A 5-minute soak in a 40% solution of household bleach decontaminated stainless steel wires coated with chronic wasting disease (CWD) prions, according to a new study. The scientists used the wires to model knives and saws that hunters and meat processors use when handling deer, elk and moose - all of which are susceptible to CWD.

Biology: Microbiology
Published

Breakthrough in chronic wasting disease research reveals distinct deer, elk prion strains      (via sciencedaily.com) 

Researchers have developed a new gene-targeted approach to study chronic wasting disease in mice, allowing opportunities for research that has not previously existed.

Biology: Microbiology
Published

Northeastern U.S. deer more susceptible to wasting disease than those to the west      (via sciencedaily.com) 

Some deer are more susceptible to chronic wasting disease that is spreading through herds of white-tailed deer across much of the United States, according to researchers, who have identified a panel of genetic markers that reliably predict which animals are most vulnerable to the contagious neurological disorder.

Biology: Microbiology
Published

Retinal prion disease study redefines role for brain cells      (via sciencedaily.com) 

Scientists studying the progression of inherited and infectious eye diseases that can cause blindness have found that microglia, a type of nervous system cell suspected to cause retinal damage, surprisingly had no damaging role during prion disease in mice. In contrast, the study findings indicated that microglia might delay disease progression.

Biology: Microbiology
Published

New skin test detects prion infection before symptoms appear      (via sciencedaily.com) 

Prions can infect both humans and animals, causing Creutzfeldt-Jakob disease (CJD) in humans, mad cow disease in cattle, and chronic wasting disease in elk and deer. The infectious, misfolded protein particles often go undetected as they destroy brain tissue, causing memory loss, mobility issues, and ultimately death. Preclinical detection of prions has proven difficult, but new research suggests skin samples hold early signs of prion disease that precede neurologic symptoms.

Biology: Microbiology
Published

Amyloid pathology transmission in lab mice and historic medical treatments      (via sciencedaily.com) 

A study has confirmed that some vials of a hormone used in discontinued medical treatments contained seeds of a protein implicated in Alzheimer's disease, and are able to seed amyloid pathology in mice.

Biology: Microbiology
Published

Soil compound fights chronic wasting disease      (via sciencedaily.com) 

A major compound in soil organic matter degrades chronic wasting disease prions and decreases infectivity in mice, according to a new study.

Biology: Microbiology
Published

Eyes of Creutzfeldt-Jakob disease patients show evidence of prions      (via sciencedaily.com) 

By the time symptoms of sporadic Creutzfeldt-Jakob disease (sCJD) are typically discovered, death is looming and inevitable. In a new study, researchers report finding tell-tale evidence of the condition's infectious agent in the eyes of deceased sCJD patients, making the eye a potential source for both early CJD detection and prevention of disease transmission.

Biology: Microbiology
Published

Not all prion strains interfere with each other      (via sciencedaily.com) 

The first example of prion strains that replicate independently in vitro and in vivo suggests that strain diversity may be greater than previously thought, according to a new study.

Biology: Microbiology
Published

Possible molecular pathway for neurodegeneration in prion diseases      (via sciencedaily.com) 

A new study has shed light on the mechanisms underlying the progression of prion diseases and identified a potential target for treatment.