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Archive for the ‘chemistry’ category: Page 311

Jun 20, 2019

Systems Chemistry: Steps Towards De-Novo Life | Projects | H2020

Posted by in categories: biological, chemistry

We synthesise life de-novo in the lab? This is one of the Grand Challenges of contemporary Science. Overall objective of this project is to set important steps in turning chemistry into biology by building fully synthetic chemical systems that contain and integrate some of the essential elements of life: replication, metabolism and compartmentalisation. Functional coupling of any of life’s essential elements has not been achieved, at least not without making use of biomolecules. We now aim to achieve such coupling and develop fully chemical systems to become increasingly life-like. Specific aims are:

Jun 19, 2019

Dr. Dennis McKenna — ideaXme — Psychedelic Drugs in Mainstream Medicine — Ira Pastor

Posted by in categories: aging, bioengineering, biotech/medical, business, chemistry, finance, health, life extension, neuroscience

Jun 18, 2019

Rules of brain architecture revealed in large study of neuron shape and electrophysiology

Posted by in categories: biotech/medical, chemistry, neuroscience

To understand our brains, scientists need to know their components. This theme underlies a growing effort in neuroscience to define the different building blocks of the brain—its cells.

With the mouse’s 80 million and our 86 billion, sorting through those delicate, microscopic building blocks is no small feat. A new study from the Allen Institute for Brain Science, which was published today in the journal Nature Neuroscience, describes a large profile of mouse neuron types based on two important characteristics of the : their 3D shape and their electrical behavior.

The study, which yielded the largest dataset of its kind from the adult laboratory mouse to date, is part of a larger effort at the Allen Institute to discover the ’s “periodic table” through large-scale explorations of brain . The researchers hope a better understanding of cell types in a healthy mammalian brain will lay the foundation for uncovering the cell types that underlie human brain disorders and diseases.

Jun 13, 2019

Gut microbes eat our medication

Posted by in categories: biotech/medical, chemistry, food

The first time Vayu Maini Rekdal manipulated microbes, he made a decent sourdough bread. At the time, young Maini Rekdal, and most people who head to the kitchen to whip up a salad dressing, pop popcorn, ferment vegetables, or caramelize onions, did not consider the crucial chemical reactions behind these concoctions.


Even more crucial are the reactions that happen after the plates are clean. When a slice of sourdough travels through the digestive system, the trillions of microbes that live in our gut help the body break down that bread to absorb the nutrients. Since the human body cannot digest certain substances — all-important fiber, for example — microbes step up to perform chemistry no human can.

“But this kind of microbial metabolism can also be detrimental,” said Maini Rekdal, a graduate student in the lab of Professor Emily Balskus and first-author on their new study published in Science. According to Maini Rekdal, gut microbes can chew up medications, too, often with hazardous side effects. “Maybe the drug is not going to reach its target in the body, maybe it’s going to be toxic all of a sudden, maybe it’s going to be less helpful,” Maini Rekdal said.

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Jun 10, 2019

Forensic Database Biology Table

Posted by in categories: biological, chemistry, privacy

Biology Biometrics Chemistry/Toxicology Environmental Fire & Explosives Firearms & Toolmarks Questioned Documents

Technology/Digital Evidence Trace Evidence Other

Forensic databases — biology name sub

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Jun 9, 2019

Artificial life (often abbreviated ALife or A-Life) is a field of study wherein researchers examine systems related to natural life

Posted by in categories: chemistry, robotics/AI

Artificial life (often abbreviated ALife or A-Life) is a field of study wherein researchers examine systems related to natural life, its processes, and its evolution, through the use of simulations with computer models, robotics, and biochemistry.

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Jun 9, 2019

Study says new element 115, ununpentium, does exist

Posted by in category: chemistry

One more element may soon be added to the Periodic Table. On September 10, 2013, scientists reported evidence supporting the existence of element 115.

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Jun 7, 2019

Quantum chemistry on quantum computers

Posted by in categories: chemistry, computing, particle physics, quantum physics

The special properties of quantum computers should make them ideal for accurately modelling chemical systems, Philip Ball discovers.

‘If you want to make a simulation of nature,’ the legendary physicist Richard Feynman advised in 1981, ‘you’d better make it quantum-mechanical.’ By ‘nature’, Feynman meant ‘stuff’: the particles and atoms and molecules we’re made from. His comment came in a talk published the following year, and is generally regarded as the founding text of quantum computing. It now looks even more prophetic than ever.

For although we are constantly told that the unique selling point of quantum computers is their enormous speed compared with the classical devices we currently use – a speed-up that exploits the counterintuitive laws of quantum mechanics – it seems that the most immediate benefit will be the one Feynman identified in the first place: we’ll be able to simulate nature better.

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Jun 5, 2019

Chinese scientists find 5 million tons of lithium deposits in Yunnan

Posted by in category: chemistry

Chinese scientists have found a major lithium deposit in Southwest China’s Yunnan Province, estimated to contain more than 5 million tons.

There are approximately 40 million tons of proven lithium reserves in the world, the Xinhua News Agency’s Globe magazine reported.

A team led by research fellow Wen Hanjie from the Institute of Geochemistry under the Chinese Academy of Sciences found 340,000 tons of lithium oxide in a test site in central Yunnan.

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Jun 1, 2019

Quick liquid packaging: Encasing water silhouettes in 3D polymer membranes for lab-in-a-drop experiments

Posted by in categories: biotech/medical, chemistry, engineering, nanotechnology

The ability to confine water in an enclosed compartment without directly manipulating it or using rigid containers is an attractive possibility. In a recent study, Sara Coppola and an interdisciplinary research team in the departments of Biomaterials, Intelligent systems, Industrial Production Engineering and Advanced Biomaterials for Healthcare in Italy, proposed a water-based, bottom-up approach to encase facile, short-lived water silhouettes in a custom-made adaptive suit.

In the work, they used a biocompatible that could self-assemble with unprecedented degrees of freedom on the surface to produce a . They custom designed the polymer film as an external container of a liquid core or as a free-standing layer. The scientists characterized the physical properties and morphology of the and proposed a variety of applications for the phenomenon from the nanoscale to the macroscale. The process could encapsulate cells or microorganisms successfully without harm, opening the way to a breakthrough approach applicable for organ-on-a-chip and lab-in-a-drop experiments. The results are now published in Science Advances.

The possibility of isolating, engineering and shaping materials into 2-D or 3D objects from the nanometer to the microscale via bottom-up engineering is gaining importance in materials science. Understanding the physics and chemistry of materials will allow a variety of applications in microelectronics, drug delivery, forensics, archeology and paleontology and space research. Materials scientists use a variety of technical methods for microfabrication including two-photon polymerization, soft interference lithography, replica molding and self-folding polymers to shape and isolate the material of interest. However, most materials engineering protocols require chemical and physical pretreatments to gain the desired final properties.

Continue reading “Quick liquid packaging: Encasing water silhouettes in 3D polymer membranes for lab-in-a-drop experiments” »