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54 articles from ScienceDaily

Genome sequenced for pesky pumpkin pathogen

Pumpkin growers dread the tiny tan scabs that form on their fruit, each lesion a telltale sign of bacterial spot disease. The specks don't just mar the fruit's flesh, they provide entry points for rot-inducing fungus and other pathogens that can destroy pumpkins and other cucurbits from the inside out. Either way, farmers pay the price, with marketable yields reduced by as much as 90%.

Decline in black cherry regeneration may herald wider forest change

Reasons for more than a decade of black cherry regeneration decline in the Allegheny Hardwood Regions are not well-understood; a team of scientists looked at five leading hypotheses; they found that the most likely factors are pathogens and reduced nitrogen availability, and that black cherry may actually be a story of change on a much bigger scale.

Shining a healing light on the brain

Scientists report a novel noninvasive treatment for brain disorders based on breakthroughs in both optics and genetics. It involves stimulation of neurons by means of radioluminescent nanoparticles injected into the brain and exposed to X-rays.

Zooming in on muscle cells

An international team has produced the first high-resolution 3D image of the sarcomere, the basic contractile unit of skeletal and heart muscle cells, by using electron cryo-tomography. Electron cryo-tomography capability of imaging structures directly in frozen muscle cells could translate into future medical treatments for muscle diseases and a better understanding of the aging process.

Aerosol formation in clouds

Researchers have studied for the first time how chemical reactions in clouds can influence the global climate. They found that isoprene, the dominant non-methane organic compound emitted into the atmosphere, can strongly contribute to the formation of organic aerosols in clouds.

Weird earthquake reveals hidden mechanism

The wrong type of earthquake in an area where there should not have been an earthquake led researchers to uncover the cause for this unexpected strike-slip earthquake -- where two pieces of crust slide past each other on a fault -- in places where subduction zone earthquakes -- one geologic plate slipping beneath another -- are common.

Greenland caves: Time travel to a warm Arctic

An international team of scientists presents an analysis of sediments from a cave in northeast Greenland, that cover a time period between about 588,000 to 549,000 years ago. This interval was warmer and wetter than today, the cave deposits provide an outlook in a possible future warmer world due to climate change.

Optical fiber could boost power of superconducting quantum computers

The secret to building superconducting quantum computers with massive processing power may be an ordinary telecommunications technology - optical fiber. Physicists have measured and controlled a superconducting quantum bit (qubit) using light-conducting fiber instead of metal electrical wires, paving the way to packing a million qubits into a quantum computer rather than just a few thousand.

Semiconductor qubits scale in two dimensions

The heart of any computer, its central processing unit, is built using semiconductor technology, which is capable of putting billions of transistors onto a single chip. Now, researchers have shown that this technology can be used to build a two-dimensional array of qubits to function as a quantum processor. Their work is a crucial milestone for scalable quantum technology.

Green leafy vegetables essential for muscle strength

Eating just one cup of leafy green vegetables every day could boost muscle function, according to new research. The study found that people who consumed a nitrate-rich diet, predominantly from vegetables, had significantly better muscle function of their lower limbs.

Small robot swimmers that heal themselves from damage

Living tissue can heal itself from many injuries, but giving similar abilities to artificial systems, such as robots, has been extremely challenging. Now, researchers have developed small, swimming robots that can magnetically heal themselves on-the-fly after breaking into two or three pieces. The strategy could someday be used to make hardier devices for environmental or industrial clean up, the...

Researchers optimize materials design using computational technologies

The process of fabricating materials is complicated, time-consuming and costly. Too much of one material, or too little, can create problems with the product, forcing the design process to begin again. Advancements in the design process are needed to reduce the cost and time it takes to produce materials with targeted properties.

Dangerous landfill pollutants ranked in order of toxicity

To help environmental agencies battle the toxic threats posed by landfills, researchers have developed a system that ranks the toxins present in a landfill by order of toxicity and quantity, allowing agencies to create more specific and efficient plans to combat leachate.

A novel marker of adult human neural stem cells discovered

Researchers have discovered BASP-1, a novel biomarker of adult human neural stem cells. With this newly discovered biomarker, scientists can better understand the relevance and intricate mechanisms of neurogenesis, which may lead to new future therapeutic approaches to treat and manage neurological and neuropsychiatric disorders associated with diminished neurogenesis.

Lung cancer resistance: the key is glucose

Lung tumors are home to immune cells that affect their growth and resistance to treatment. Looking at neutrophils, scientists led by EPFL have discovered that the key might lie in the cells' ability to metabolize glucose, opening an entirely new target for improving radiotherapy.

A better treatment for sickle cell disease

Sickle cell disease is the most prevalent inherited blood disorder in the world, affecting 70,000 to 100,000 Americans. However, it is considered an orphan disease, meaning it impacts less than 200,000 people nationally, and is therefore underrepresented in therapeutic research.

How humans develop larger brains than other apes

A new study is the first to identify how human brains grow much larger, with three times as many neurons, compared with chimpanzee and gorilla brains. The study identified a key molecular switch that can make ape brain organoids grow more like human organoids, and vice versa.