Iridium-catalyzed Z-retentive asymmetric allylic substitution reactions
In synthetic organic chemistry, Z-olefins are a challenging synthetic target to produce in the lab due to their relative thermodynamic instability. The Z-olefins form an unsaturated compound with a CnH2n formula that can be readily isomerized. Analog.....»»
Heat rectification via suspended asymmetric graphene nanomesh
It is one of the humans' desired goals that we want to precisely control the heat transport as the level as that we can control the electrical current. However, a high-performance thermal rectifier or thermal diode is still missing. Currently, resear.....»»
New Year"s science in space for a healthier life
Another year passes, and our muscles, bones, eyes and ears deteriorate as we age—even more so in space. Reactions in ESA astronaut Matthias Maurer's body after barely two months on the International Space Station are giving European scientists clue.....»»
30% of Supported Surface Devices Don"t Have Windows 11 Driver Packages Yet
Reader segaboy81 shares a report: When Microsoft announced Windows 11 in June of 2021, it was greeted with mixed reactions by the tech press. Some outlets praised the round corners and modern design elements, while others conjectured that visual elem.....»»
Scientists design and construct minimized synthetic carbon fixation cycle
Scientists from the Institute of Microbiology of the Chinese Academy of Sciences (IMCAS) recently reported a minimized synthetic carbon fixation cycle. The cycle only contains four biochemical reactions and is capable of condensing two molecules of c.....»»
Telegram to add animated emoji reactions to its platform
Telegram is planning a few changes, such as including animated emoji reactions, as well as special text for hiding movie spoilers......»»
Why are certain heavy metals okay to eat? (video)
Heavy metals have a reputation for being dangerous, but some are essential nutrients that you can't live without. In this week's episode of Reactions, we explore why:.....»»
Researchers find that iodine in desert dust destroys ozone
When winds loft fine desert dust high into the atmosphere, iodine in that dust can trigger chemical reactions that destroy some air pollution, but also let greenhouse gases stick around longer. The finding, published today in the journal Science Adva.....»»
Parental rejection leads to negative behaviors and emotions that range from bullying to anxiety, finds study
The ways parents show affection toward their children differ in different cultures. But children's reactions to rejection by a parent don't, reports a team of researchers from the University of Connecticut (UConn) and other universities in the Journa.....»»
Radiation damage due to intermolecular Coulombic decay
When cells are exposed to ionizing radiation, more destructive chain reactions may occur than previously thought. An international team led by researchers from the Max Planck Institute for Nuclear Physics in Heidelberg has for the first time observed.....»»
Is Wolfram the Smartest Programming Language In the Room?
theodp writes: Out of the box, does your programming language support Chemical Formulas & Chemical Reactions? Making Videos from Images & Videos? Integrals? Real Numbers? Graph Trees? Leap Seconds? Bio Sequences? Flight Data? Vector Displacement Plot.....»»
Finding a gift that kids actually like is tricky. This guide will make it easier.
The "It's an avocado! Thanks!" kid might make it look easy, but finding the perfect gift for a kid requires attention to detail — and an ear for their reactions to various toy commercials.Kids can be particular. The things kids like change not.....»»
A needle in a haystack: Weeding out dead catalyst
Catalysts are important additives that are used to increase the material and energy efficiency of chemical reactions and processes. Although catalysts operate in cycles that should restore their initial activity over and over again, they do deactivat.....»»
Microplastics Cause Damage To Human Cells, Study Shows
Microplastics cause damage to human cells in the laboratory at the levels known to be eaten by people via their food, a study has found. From a report: The harm included cell death and allergic reactions and the research is the first to show this hap.....»»
How to maintain gender equality through the sex chromosomes
Asymmetric sex chromosomes were independently shaped during evolution in many species, and different strategies evolved alongside to overcome the resulting imbalance in genetic information. Molecular biologist Marie-Line Faucillion has studied this i.....»»
Researchers solve mystery of "structure-insensitive" catalytic reactions
An international team of researchers has solved one of the fundamental mysteries in catalysis: The paradox of structure insensitivity. To make better catalysts, researchers have long been studying the optimal shape and size of these nanoparticles, as.....»»
Gas bubbles in rock pores were a nursery for life on early Earth
Where and how did life begin on Early Earth more than 3.5 billion years ago from non-living chemicals? A key necessity for the first cells on Earth is the ability to make compartments and evolve to facilitate the first chemical reactions. Membraneles.....»»
How some tissues can "breathe" without oxygen
Humans need oxygen molecules for a process called cellular respiration, which takes place in our cells' mitochondria. Through a series of reactions called the electron transport chain, electrons are passed along in a sort of cellular relay race, allo.....»»
New computational approach predicts chemical reactions at high temperatures
Extracting metals from oxides at high temperatures is essential not only for producing metals such as steel but also for recycling. Because current extraction processes are very carbon-intensive, emitting large quantities of greenhouse gases, researc.....»»
Researchers develop new approach to nanoparticles that stop internal bleeding
Researchers have developed a unique way of modifying the surfaces of nanoparticles within life-saving medications to provide infusions that can be delivered more quickly, but with a reduced risk of negative reactions......»»
Miniature grinding mill provides observation of "green" chemical reactions
Scientists at the University of Cambridge have developed a new approach for observing mechanochemical reactions—where simple ingredients are ground up to make new chemical compounds and materials that can be used in anything from the pharmaceutical.....»»