Chemical Polarity

Article URL: https://en.wikipedia.org/wiki/Aconitine Comments URL: https://news.ycombinator.com/item?id=42423916 Points: 1 # Comments: 0

Chloroplast, which is a double-membrane-bounded organelle, is the main site for CO2 fixation via photosynthesis in green plants. The double-membrane configuration can regulate the transport of substances into and out of the chloroplasts with the aid of functional units like lipid bilayer and transmembrane proteins.

Electrostatic capacitors are a key component in high-power pulse equipment, power transmission and transformation engineering, new energy vehicles, and 5G communication. Their capability for ultrafast charging-discharging and ultrahigh power density is pivotal for their performance.

In dim light a cat sees much better than you do, as do dogs and nocturnal animals. That's because the structure of a cat's eye has a tapetum lucidum, a mirror-like layer immediately behind the retina. Light entering the eye that is not focused by the lens onto the retina is reflected off the tapetum lucidum, where the retina gets another chance to receive the light, process it, and send impulses to the optic nerve.

MIT physicists have observed fractional quantum Hall effect in simple pentalayer graphene. The finding could make it easier to develop more robust quantum computers.

Surface-enhanced Raman scattering (SERS) is a powerful fingerprint analysis and detection technique that plays an important role in the fields of food safety, environmental protection, bio-imaging and hazardous substance identification. Electromagnetic enhancement (EM) and chemical enhancement (CM) are the two recognized mechanisms of action for amplifying Raman signals.

Developing new and more-efficient catalytic ways to control chemical reactivity and selectivity has been a constant quest for chemists in the fields of chemical manufacturing and fundamental research. Growing evidence points in the direction of utilizing oriented external electric fields as "smart effector" to manipulate a range of chemical change, such as chemical bonding, selectivity, mechanistic crossover and…

While this field of study may go over the heads of many, for Dr. Sailu Munnuri, organic chemistry has always made sense. He successfully obtained a master's degree in organic chemistry from Osmania University and went on to secure a Ph.D. from the Indian Institute of Chemical Technology - Hyderabad, India.

Phosphatases of regenerating liver (PRLs) are a family of enigmatic proteins involved in cell growth and metabolism present in various species. From humans to fruit flies, they play a unique role in the growth of cancerous tumors and the spread of cancer throughout the body. New research emerging from McGill University is contributing to what is known about PRLs, which could potentially become an important tool in…

Our bodies comprise different tissues and organs, which are composed of many cells that must adhere to form functional higher order structures. This adherence is facilitated by specialized proteins called cell–cell adhesion molecules, which extend from neighboring cells and link to each other.

Researchers at the College of Environmental Science and Engineering of Nankai University have introduced a new strategy to realize rapid biochemical oxygen demand (BOD) measurement by using the competitive switching of electrotrophic and heterotrophic pathways of facultative bacteria. The findings were published in Water Research under the title "Switchover of Electrotrophic and Heterotrophic Respirations Enables…

On Outdoors StackExchange on a post about the safety of distilled water, someone claimed that pure water is very corrosive. Water distilled for some laboratory uses (like the Z-pinch reactor) is

Researchers have observed steric effects—the interactions of molecules depending on their spatial orientation (not just between their electrons involved in bonding)—in a chemical reaction involving non-polar molecules for the first time. The breakthrough opens the door to an entirely new way to control the products of chemical reactions.

Author: Rick Sheridan

How can plastics be designed so they retain their desirable properties but at the same time can be more effectively recycled? This and other questions concerning the eco-friendliness of plastics are the focus of chemist Stefan Mecking and his research group at the University of Konstanz.

An insidious category of carcinogenic pollutants known as "forever chemicals" may not be so permanent after all. University of California, Riverside, chemical engineering and environmental scientists recently published new methods to chemically break up these harmful substances found in drinking water into smaller compounds that are essentially harmless.

In chemicals used in agriculture, as well as in pharmaceuticals and a variety of materials, pyridines are often found as so-called functional units that decisively determine the chemical properties of substances. Pyridines belong to the group of ring-shaped carbon-hydrogen (C-H) compounds ("heterocycles"), and they contain a nitrogen atom (N). For chemists, the direct functionalization of the carbon-hydrogen bonds…

For decades, figuring out exactly why cancerous tumors form in the human body has been a goal for scientists, but knowing how cancer cells spread is also key to fighting the often-deadly disease.

Cannabis is a complex mixture of hundreds of chemicals. Here's a look at one of them.

Cancers with common KRAS mutations can be treated with an inhibitor of lysosomal acidification in mice.