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Feb 20, 2023

Supramolecular assembly assists the synthesis of highly active carbon-nitrogen-based photo/electrocatalysts

Posted by in categories: chemistry, energy

In a paper published in the journal National Science Open, the morphology and structure regulation methods of supramolecular assembly are summarized. Then, recent progresses of supramolecular assembly derived carbon-nitrogen-based materials for photo/electrocatalysis are discussed. Furthermore, the developments and challenges in future are prospected.

The sustainable energy storage and conversion technologies based on redox reactions are promising pathway to solve . However, there is still lack of low-cost, ecofriendly and highly active photo/electrocatalysts, which play a crucial role in the .

In this review, the author first summarized the effects of temperature, solvent type, pH value and monomer on the morphology and structure of the supramolecular assembly. Then, the effects of morphology and structure regulation on the physicochemical properties of supramolecular assembly-derived carbon-nitrogen-based materials were discussed, which determined the essential properties of catalysts for a specific photo/electrocatalytic reaction.

Feb 20, 2023

In-depth virological and immunological characterization of HIV-1 cure after CCR5Δ32/Δ32 allogeneic hematopoietic stem cell transplantation

Posted by in category: biotech/medical

Despite scientific evidence originating from two patients published to date that CCR5Δ32/Δ32 hematopoietic stem cell transplantation (HSCT) can cure human immunodeficiency virus type 1 (HIV-1), the knowledge of immunological and virological correlates of cure is limited. Here we characterize a case of long-term HIV-1 remission of a 53-year-old male who was carefully monitored for more than 9 years after allogeneic CCR5Δ32/Δ32 HSCT performed for acute myeloid leukemia. Despite sporadic traces of HIV-1 DNA detected by droplet digital PCR and in situ hybridization assays in peripheral T cell subsets and tissue-derived samples, repeated ex vivo quantitative and in vivo outgrowth assays in humanized mice did not reveal replication-competent virus.

Nature Publication:

After the Berlin Patient, and the London Patient. There appears to be a third patient cured of HIV through stem cell transplantation.

Continue reading “In-depth virological and immunological characterization of HIV-1 cure after CCR5Δ32/Δ32 allogeneic hematopoietic stem cell transplantation” »

Feb 20, 2023

Designing advanced ‘BTS’ materials for temperature and long-wave infrared sensing

Posted by in categories: biological, health, robotics/AI, wearables

Materials scientists are often inspired by nature and therefore use biological compounds as cues to design advanced materials. It is possible to mimic the molecular structure and functional motifs in artificial materials to offer a blueprint for a variety of functions. In a new report in Science Advances, Tae Hyun Kim and a research team at the California Institute of Technology and the Samsung Advanced Institute of Technology in the U.S. and South Korea, created a flexible biomimetic thermal sensing polymer, abbreviated BTS, which they designed to mimic ion transport dynamics of pectin; a plant cell wall component.

The researchers used a versatile synthetic procedure and engineered the properties of the to be elastic, flexible and stretchable in nature. The outperformed state-of-the-art temperature sensing materials such as vanadium oxide. Despite mechanical deformations, the thermal sensor-integrated material showed and stable functionality between 15° and 55° Celsius. The properties of the flexible BTS polymer made it well suited to map across space-time and facilitate broadband infrared photodetection relevant for a variety of applications.

Organic electronic materials are competitive alternatives to conventional silicon-based microelectronics due to their cost-effective, multifunctional nature. Materials scientists seek to tailor the properties of such materials at the molecular level for a range of sensing applications for wearable and implantable devices with specific characteristics such as flexibility and elasticity. At present, there is an increasing demand for all-organic electronic devices to form a range of soft and active materials. For instance, organic thermal sensors are suited for remote health care and robotics, albeit with limitations.

Feb 20, 2023

The Most Realistic Humanoid Robots In The World: How Will Artificial Intelligence Affect Our Future?

Posted by in categories: business, mathematics, robotics/AI, space

https://youtube.com/watch?v=4LevUzfdBtw

In this video, I’ll discuss some of the most advanced humanoid robots currently in development and reveal if the future really is bright for Robotics.

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Feb 20, 2023

A Cartoon Introduction to Whitehead’s Organic Cosmology

Posted by in category: cosmology

Some images to help orient you in the midst of Whitehead’s categoreal forest.

Feb 20, 2023

David Wallace: Thermodynamics as control theory

Posted by in category: physics

I explore the reduction of thermodynamics to statistical mechanics by treating the former as a control theory: a theory of which transitions between states can be induced on a system (assumed to obey some known underlying dynamics) by means of operations from a fixed list. I recover the results of standard thermodynamics in this framework on the assumption that the available operations do not include measurements which affect subsequent choices of operations. I then relax this assumption and use the framework to consider the vexed questions of Maxwell’s demon and Landauer’s principle. Throughout I assume rather than prove the basic irreversibility features of statistical mechanics, taking care to distinguish them from the conceptually distinct assumptions of thermodynamics proper.

Annual UWO Philosophy of Physics Conference.
Thermodynamics as a Resource Theory: Foundational and Philosophical Implications.
June 20–22, 2018
http://philphysics.uwo.ca.
David Wallace, University of Southern California.

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Feb 20, 2023

Look Out! Astronomers Just Found A Runaway Supermassive Black Hole

Posted by in category: cosmology

Astronomers spotted the wake left by the supermassive black hole as it barrels across the disk after being kicked out during a galactic merger.

Feb 20, 2023

Just an Ordinary Material? The Last Mysteries of Mica

Posted by in categories: chemistry, materials

A well-known mineral is once again the center of attention thanks to applications in electronics: the Vienna University of Technology shows that mica still possesses some surprises.

At first glance, mica appears to be quite ordinary: it is a prevalent mineral found in materials like granite and has undergone extensive examination from geological, chemical, and technical standpoints.

At first, it may seem that there’s nothing groundbreaking that can be uncovered about such a commonplace material. However, a team from the Vienna University of Technology has recently published a study in Nature Communications.

Feb 20, 2023

What Is dark energy?

Posted by in categories: cosmology, physics

Dark energy is the name physicists have given to the mysterious thing driving the universe’s accelerated expansion. It may be a force or a form of energy, and one piece of evidence suggests it is hidden inside black holes.

Feb 20, 2023

German doctors say another person declared free of HIV after blood stem cell transplant

Posted by in category: biotech/medical

Feb. 20 (UPI) — Researchers at Dusseldorf University said Monday a fifth person has been declared free of HIV after a blood stem cell transplant during that patient’s treatment for leukemia. The revelation, disclosed in a study published Monday in the scientific journal Nature Medicine, said the patient, a 53-year-old man from Dusseldorf, Germany, tested positive for HIV in 2008 and developed leukemia three years later.