Earth
An emerging scientific consensus is that gases--in particular carbon gases--released by volcanic eruptions millions of years ago contributed to some of Earth's greatest mass extinctions. But new research at The City College of New York suggests that that's not the entire story.
If we cross a road with our smartphone in view, a car horn or engine noise will startle us. In everyday life we can easily combine information from different senses and shift our attention from one sensory input to another - for example, from seeing to hearing. But how does the brain decide which of the two senses it will focus attention on when the two interact? And, are these mechanisms reflected in the structure of the brain?
The concept is based on the interaction of resonant semiconductor iron oxide Fe2O3 nanoparticles with light. Particles previously loaded with the antitumor drug are injected in vivo and further accumulate at the tumor areas. In order to release the drug non-invasively, the carrier particles have to be light-sensitive. For this purpose, the polymer containers (capsules) can be modified with iron oxide resonant semiconductor nanoparticles. When irradiated with light, they get heated and induce drug release. The research was published in Laser and Photonics Reviews.
LAWRENCE -- In the latest issue of The American Naturalist, University of Kansas investigator Jorge Sobero?n offers a new method for ecologists to calculate the correlation between geographic space and the number of species inhabiting that space.
A scrupulous gatekeeper stands between the brain and its circulatory system to let in the good and keep out the bad, but this porter, called the blood-brain barrier, also blocks trial drugs to treat diseases like Alzheimer's or cancer from getting into the brain.
Tropical Cyclone Damien made landfall on Feb. 9 along the northern Pilbara coast of Western Australia. On Feb. 10, the GPM or Global Precipitation Measurement mission core satellite analyzed the rainfall generated by the remnants that triggered warnings.
HANOVER, N.H. - February 10, 2020- Food and energy availability cause physical changes in acid-loving microorganisms that are used to study Earth's climate history, according to research from Dartmouth College.
The finding that factors other than temperature can influence the membranes of single-celled archaea adds to the complexity of paleoclimate studies which have traditionally used the microbe's fossilized remains to reconstruct past climate conditions.
Despite similar rates of enrollment into medical care, youth with HIV have much lower rates of viral suppression--reducing HIV to undetectable levels--compared to adults, according to an analysis funded by the National Institutes of Health. Among more than 1,000 youth, most of whom were newly enrolled in care at treatment centers throughout the United States, 12% had attained viral suppression, far lower than the 32% to 63% observed in studies of adults over age 24. The findings suggest that after they enroll in an HIV treatment program, a low proportion of youth adhere to care regimens.
The increased risk of heart attack or "a broken heart" in early bereavement could be reduced by using common medication in a novel way, according to a world-first study led by the University of Sydney and funded by Heart Research Australia.
Lead Investigator Professor Geoffrey Tofler said while most people gradually adjust to the loss of a loved one, there is an increase in heart attack and death among bereaved people, particularly those grieving a spouse or child.
Tsukuba, Japan - The goal of most cancers is to grow and take over the host's body. The immune system has long been in the crosshairs of cancer researchers, as it plays a central role in defending the human body from foreign invasion. In a new study, researchers from the University of Tsukuba have revealed that tumors that produce a protein called soluble CD155 accumulate in the lungs of mice by disabling the immune system of the animals.
The quantum geometric tensor represents a central and ubiquitous concept in quantum mechanics, by characterizing the geometric structure of the Hilbert space. It is responsible to a number of striking phenomena, such as quantum phase transitions and novel topological matters, and has a wide range of applications in the area of quantum information and quantum metrology.
Individuals who suffer from migraine headaches appear to have a hyper-excitable visual cortex researchers at the Universities of Birmingham and Lancaster suggest.
Migraines are characterised as debilitating and persistent headaches, often accompanied by an increased sensitivity to visual or other sensory stimuli. The exact causes of these headaches are not well understood, although scientists believe they may be related to temporary changes in the chemicals, nerves, or blood vessels in the brain.
In a population of animals or plants, genetic diversity can decline much more quickly than species diversity in response to various stress factors: disease, changes to habitat or climate, and so on. Yet not much is known about fish genetic diversity around the world.
The development of a quantum computer that can solve problems, which classical computers can only solve with great effort or not at all - this is the goal currently being pursued by an ever-growing number of research teams worldwide. The reason: Quantum effects, which originate from the world of the smallest particles and structures, enable many new technological applications. So-called superconductors, which allow for processing information and signals according to the laws of quantum mechanics, are considered to be promising components for realizing quantum computers.
A new way to spot melanoma cells circulating in the blood has the potential to significantly improve the monitoring of cancer patients and guide future treatment.
Edith Cowan University's Melanoma Research Group, in collaboration with Harvard Medical School and clinicians at Western Australian hospitals, has pioneered a new technique to detect circulating tumour cells (CTCs) that could provide a new avenue for cancer diagnosis and therapies.