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.....»»
Team synthesizes a new polyoxometalate-based metal-organic complex
A research team has synthesized a new polyoxometalate-based metal-organic complex that they then tested as a catalyst for the oxidation reactions of various sulfides. They found that the complex possesses excellent catalytic performance, good reusabi.....»»
Everything new in iOS 17.2 beta 1: Journal, iMessage sticker reactions, more
The beta cycle has restarted with iOS 17.2 and the rest, which includes the long-awaited Journal app on iPhone, iMessage sticker reactions, and the rumored Apple TV app redesign.iOS 17.2 beta 1Apple released iOS 17.1 and the other point updated opera.....»»
Sustainable consumption by product substitution? Appropriation of plant-based "mylk" in everyday life
Josephine Mylan has co-authored an article in the journal Consumption and Society, "Sustainable consumption by product substitution? An exploration of the appropriation of plant-based 'mylk' in everyday life.".....»»
Single-atom catalysis: In search of "holy grails" in catalysis
In the field of catalysis, the term "holy grail" reactions refers to those reactions that hold significant scientific, economic, and environmental sustainability value for the future of humanity. These reactions harness abundant and readily available.....»»
Enzyodynamic therapy at nanoscale
Enzyodynamic therapy (EDT) is a new type of reactive oxygen species (ROS)-related dynamic therapeutic modality, which adequately utilizes the enzyme-triggered catalytic reactions in living organisms and achieves disease treatment through controlling.....»»
How to turn off FaceTime video reactions in iOS 17 and macOS Sonoma
The new video reactions in iOS 17 and macOS Sonoma aren't always a good thing to have enabled for all conversations. Here's how to turn them off.Reactions in FaceTime for iOS 17As part of iOS 17 and macOS Sonoma, Apple introduced a video feature call.....»»
Tracking emotions on social media to predict which posts go viral
It doesn't take a scientist to know that a Facebook post bursting with party popper emojis or angry face symbols gets more reactions and shares than a flat, factual account of a child's graduation or an airline's villainous customer service......»»
New method to predict the risk of adverse drug events
Studying signaling within cells can predict the risk of adverse drug reactions of novel obesity and type II diabetes treatments before they reach the patient, according to a new study from Karolinska Institutet published in Nature Communications......»»
Increase in forest fires may damage the crucial ozone layer
All particles that reach the atmosphere cause different chemical reactions. Particles come partly from natural sources such as volcanic eruptions and forest fires, and partly from pollution and emissions. Aerosol researcher Johan Friberg studies part.....»»
Researchers develop nonlinear optical crystals by unusual cationic substitution strategy
An ideal infrared (IR) nonlinear optical (NLO) crystal must have the advantages of a wide transmittance range, impressive laser-induced damage threshold (LIDT), sufficient birefringence index, bulk single-crystal form, and physicochemical stability......»»
Researchers catch protons in the act of dissociation with ultrafast "electron camera"
Scientists have caught fast-moving hydrogen atoms—the keys to countless biological and chemical reactions—in action......»»
Gmail unleashes “email emoji reactions” onto an unsuspecting world
Gmail users can reply with emoji. Everyone else will get an additional email. Gmail emoji reactions below and email (left) and the "add emoji" bar on the right......»»
Conversion of biomass-derived carbohydrates to renewable N-heterocycles via spontaneous cascade reactions
Research published in the journal National Science Open discloses a novel synthetic approach for sustainable manufacturing of valuable quinoxalines, a type of N-heterocycle chemicals widely used in food, dye and pharmaceutical industries, directly fr.....»»
How does voltage drive nonmetallic catalysts to perform electrocatalytic reactions?
Understanding how voltage drives nanoscale electrocatalysts to initiate reactions is a fundamental scientific question. This is especially challenging when dealing with non-metallic electrocatalysts due to their low inherent carrier concentration, wh.....»»
Researchers reveal origins of zirconium nitride"s superior performance
A group of researchers have unraveled the mysteries behind a recently identified material—zirconium nitride (ZrN)—that helps power clean energy reactions. Their proposed framework will help future designs for transition metal nitrides, paving a p.....»»
Climate change may affect 40% of biodiversity in semi-arid portion of Brazil"s Northeast by 2060
The consequences of climate change in the Caatinga, the semi-arid shrubland and thorn forest biome in Brazil's Northeast region, will include species loss, substitution of rare plants by more generalist vegetation, biotic homogenization (in which pre.....»»
How do zeolite-encapsulated metal catalysts act on hydrogen-related catalytic reactions?
Zeolites encapsulated metal and metal oxide species (regarded as metal@zeolite) are an important type of heterogeneous catalyst. They give performances that steadily outperform the traditional supported catalysts in many important reactions and have.....»»
iPhone 15, Apple Watch Series 9, and Apple Watch Ultra event reactions
Benjamin and Chance break down all the announcements from Apple’s September event, including reactions to the iPhone 15, iPhone 15 Pro and Apple Watch Series 9, Apple Watch Ultra 2, and their latest carbon-neutral environmental initiatives. Chance.....»»
Electron transfer kineties of CdS/Zn(impim) dots-on-rods designed for efficient visible-light reduced C-X bond
Using solar energy to drive the cleavage of C-X bonds in halogenated organic compounds to form C-H bonds can not only control environmental pollution but also achieve important organic conversion reactions......»»
Researchers develop new selective emitter based on iridium for thermophotovoltaics
Researchers from the Helmholtz-Zentrum Hereon, together with the Technical University of Hamburg and Aalborg University, have developed a new selective emitter based on iridium for thermophotovoltaics. Iridium was thus used for the first time as a ma.....»»