- PhysOrg
- 20/8/18 18:27
For nearly 50 years, a statistical omission tantamount to data falsification sat undiscovered in a critical study at the heart of regulating one of the most controversial and widely used pesticides in America.
325 articles from TUESDAY 18.8.2020
For nearly 50 years, a statistical omission tantamount to data falsification sat undiscovered in a critical study at the heart of regulating one of the most controversial and widely used pesticides in America.
In recent years, a non-invasive biopsy method called liquid biopsy has shown promise as a potential alternative to tissue biopsy, currently the gold standard in cancer detection and diagnosis. A tissue biopsy sample—traditionally collected through a surgical procedure that may require general anesthesia, accompanied by the risk of complications that may occur from any surgery, from pain through...
Organisms need to work together to adapt to climate change, especially in the presence of competitors, suggests a new study published today in eLife.
The behaviors implied in the manipulation of food items by African elephants were correlated with the shape and size of these items. Despite a common ethogram, all the elephants showed different frequencies in the use of at least one behavior.
A new study shows how differentiation of a single gene changes behavior in a wild songbird, determining whether the white-throated sparrow displays more, or less, aggression. The Proceedings of the National Academy of Sciences (PNAS) published the research, led by neuroscientists at Emory University.
When stony corals have their renowned mass spawning events, in sync with the moon's cycle, colonies simultaneously release an underwater 'cloud' of sperm and eggs for fertilization. But how do the sperm and eggs survive several hours as plankton, given threats from predators, microbes and stresses such as warming waters?
The ease of finding information on the internet is hurting students' long-term retention and resulting in lower grades on exams, according to a Rutgers University-New Brunswick study.
As soon as the foodborne pathogen Vibrio parahaemolyticus infects a human intestinal cell, the bacteria are already planning their escape. After all, once it is in and multiplies, the bacterium must find a way out to infect new cells.
Researchers at the University of Hawai'i (UH) at Mānoa's Hawai'i Institute of Marine Biology (HIMB) have just discovered that the Hawaiian tiger cowrie (Leho-kiko in Hawaiian) is a voracious predator of alien sponges such as the Orange Keyhole sponge, which can overgrow native corals and has become a concern as it spread across reefs within Kāne'ohe Bay. In the study published recently,...
Research published this week in Earth System Dynamics reports that the most sensitive climate models overestimate global warming during the last 50 years.
Liquid water is considered the cornerstone of life and has many extraordinary physical and biochemical properties. The hydrogen bond network of liquid water is widely recognized to play a crucial role in these properties. Due to the complexity of intermolecular interactions and the large spectral overlap of relevant modes, the study of hydrogen bond dynamics is challenging. In recent years,...
Since different tissues, cells or biochemicals have different (such as optical, thermal and acoustic) responses to different wavelengths of light, a light source with visible to near-infrared (NIR) multi-color output provides the fundamentals for multi-modal/multi-dimensional sensing/imaging. On the other hand, the polarization properties of light provide an opportunity for the analysis and...
Optical coherence tomography offers astounding opportunities to image the complex structure of living tissue but lacks functional information. We present dynamic full-field optical coherence tomography as a technique to noninvasively image living human induced pluripotent stem cell (hiPSC)-derived retinal organoids. Colored images with an endogenous contrast linked to organelle motility are...
A group of theoretical physicists, including two physicists from the University of Groningen, have proposed a 'table-top' device that could measure gravity waves. However, their actual aim is to answer one of the biggest questions in physics: is gravity a quantum phenomenon? The key element for the device is the quantum superposition of large objects. Their design was published in New Journal of...
More tech companies are launching software that oil and gas producers can use to measure their carbon emissions due to mounting investor pressure to curb greenhouse gases. Top investors, including BlackRock, have put climate change on their agendas, encouraging energy producers to evaluate programs to help track emissions and report on results. Tracking can show investors they are serious about...
The list of guidelines to allow students to go to school safely is long and complicated: new classroom designs to protect students, flexible school calendars to prepare for the unpredictable and additional teachers standing by in the event that a large number of them become incapacitated, to name just a few. This agenda could easily be part of a plan to reopen schools in the middle of the...
Trace vapor detection technologies are crucial for ensuring reliable and safe detection of explosives and illegal drugs. Researchers have developed a compact testing device called the Trace Vapor Generator for Explosives and Narcotics, which is portable and can be used for non-contact sampling of these vapors. The team reports the TV-Gen can accurately generate trace vapors of low vapor pressure...
Organisms need to work together to adapt to climate change, especially in the presence of competitors, suggests a new study.
Genes that play an important role in allowing SARS-CoV-2 to invade heart cells become more active with age, according to new research.
Dogs are still menacing giant pandas. This is in part, because nature reserves in China are often closely connected to human settlements where dogs roam free. Dogs can roam over 10 km in a night and some feral dogs have even set up permanent residence in the reserves.
A new study shows how differentiation of a single gene changes behavior in a wild songbird, determining whether the white-throated sparrow displays more, or less, aggression.
Researchers introduce a tool they've developed to improve the fairness of online rankings without sacrificing their usefulness or relevance.
A new study upends the widely held belief that a medication used to treat lymphatic filariasis doesn't directly target the parasites that cause the disease. The research shows the medication, diethylcarbamazine, temporarily paralyzes the parasites.
The ease of finding information on the internet is hurting students' long-term retention and resulting in lower grades on exams, according to a new study.
Scientists measured 12-21 million tons of three of the most common types of plastic in the top 200 meters of the Atlantic. By assuming the concentration of plastic in the whole Atlantic is the same as that measured at 200 meters deep, the scientists estimated there is around 200 million tons of three of the most common types of plastic alone. Compare this to the previously estimated figure of 17...