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Search results for “Complex System”

1,000+ results for "Complex System"

Leading scientists, philosophers identify nature’s missing evolutionary law

A team of scientists and philosophers identifies a new law of nature that governs the evolution of complex systems, including plants, animals, stars, and minerals. The law states that complex systems evolve to states of greater patterning, diversity, and complexity, regardless of whether they are living or nonliving.

SourceCarnegie Science Earth and Planets Laboratory·JournalProceedings of the National Academy of Sciences·TypeObservational study·DateOct 16, 2023

Mount Sinai receives $6.2 million grant from the Steven & Alexandra Cohen Foundation for the clinical care of long Lyme disease

The Mount Sinai Hospital's Cohen Center will expand its research and clinical care to include 'long Lyme Disease/Lyme+', exploring key similarities and differences with long COVID. The center will offer novel therapies, including virtual reality and non-invasive brain stimulation technologies, as well as personalized cognitive rehabili...

The Air Pollution Complex: improved air pollution understanding in China

Researchers in China have developed a new theoretical framework to understand and predict air pollution, highlighting the complexity of coal combustion and vehicle exhaust interactions. The Air Pollution Complex is a holistic approach that considers multiple emission sources and chemical processes.

SourceInstitute of Atmospheric Physics, Chinese Academy of Sciences·JournalAdvances in Atmospheric Sciences·DateJun 15, 2023

Scientists discover ‘lost world’ of our early ancestors in billion-year-old rocks

Researchers have discovered a new record of protosteroids in Earth's Middle Ages, extending the current molecular record of eukaryotes to 1600 million years ago. This finding provides a rare glimpse into the conditions surrounding the evolution of complex life and may shed light on the competitive demise of ancient eukaryote groups.

Fruit fly's complex symphony of vision

A unique microcircuit in fruit flies' visual system transforms a single type of neuronal input to compute direction selectivity, with no inhibitory neurons present. The discovery reveals a striking example of the multilayered mechanisms of inhibition and excitation in the brain.

SourceMax-Planck-Gesellschaft·JournalCurrent Biology·TypeExperimental study·DateMay 29, 2023

Dual-radical observation in a photoswitchable coordination polymer with synergy effect of semi-conductivity and valence tautomerization

Researchers observed two crystallographically independent radicals in a photoswitchable coordination polymer, showcasing a synergistic effect between valence tautomerism and semi-conductivity. This study presents the first example of dual-radical-based molecular anisotropy and charge-transfer-induced conductive anisotropy.

SourceScience China Press·JournalNational Science Review·DateMay 16, 2023

AI helps map the postal workers in cells

A team of researchers used artificial intelligence to create a 3D model of the Commander complex, a bundle of proteins that transport proteins in cells. This has helped understand how mutations cause disease, including Alzheimer's and heart disease.

SourceUniversity of Queensland·JournalCell·TypeComputational simulation/modeling·DateMay 11, 2023

What’s wrong in statistics

A new paper proposes an itemized checklist to guide researchers in publishing analyses using complex sample survey data. The checklist, PRICSSA, consists of 17 important items to report for any analyses conducted on complex survey data. This reform aims to increase transparency and make analytic mistakes easier to spot.

SourceOxford University Press USA·JournalJournal of Survey Statistics and Methodology·TypeLiterature review·DateApr 26, 2023

Computational ‘short cuts’ offer fast answers to complex supply chain problems

Computational heuristics like Grey Wolf Optimizer and Whale Optimization Algorithm offer fast solutions to complex supply chain problems, providing accurate results within a shorter time frame. The research suggests these tools can be a valuable addition to supply chain management, especially in responding to unexpected disruptions.

SourceNorth Carolina State University·JournalIEEE Access·TypeComputational simulation/modeling·DateApr 25, 2023

A herbal compound to fight autoimmunity

A team from Osaka University discovered that celastrol blocks the progression of rheumatoid arthritis by inhibiting a protein complex that promotes autoimmune responses. The researchers found that celestrol binds to COMMD3 covalently, preventing the formation of the COMMD3/8 complex and impairing antibody production.

SourceOsaka University·JournalScience Immunology·TypeExperimental study·DateApr 4, 2023

Molecules precursors to life discovered in the Perseus Cloud

Scientists have detected various prebiotic molecules, including hydrogen cyanide and fullerenes, in the Perseus Molecular Cloud. The presence of these molecules near forming planets could contribute to the formation of complex organic molecules, potentially supplying ancient micro-organisms with the genetic code.

SourceInstituto de Astrofísica de Canarias (IAC)·JournalMonthly Notices of the Royal Astronomical Society·DateApr 3, 2023

The complete respiratory supercomplex identified

The study resolves a long-standing question about the structure of respiratory supercomplexes in unicellular eukaryotic organisms. Complex II is found to be part of the supercomplex in these organisms, optimizing ATP formation and revealing a surprising variety in supercomplex construction.

SourceAarhus University·JournalNature·DateMar 22, 2023

Theory can sort order from chaos in complex quantum systems

A new mathematical theory developed by scientists at Rice University and Oxford University can predict the nature of motions in complex quantum systems. The theory applies to any sufficiently complex quantum system and may give insights into building better quantum computers, designing solar cells, or improving battery performance.

SourceRice University·JournalProceedings of the National Academy of Sciences·TypeComputational simulation/modeling·DateFeb 23, 2023

Fossil discovery reveals complex ecosystems existed on Earth much earlier than previously thought

A 250.8 million-year-old fossil find reveals complex marine ecosystems on Earth just one million years after the Permian-Triassic mass extinction, contradicting long-held theories. The discovery provides insights into life's rapid recovery from extreme crises and necessitates a re-evaluation of early Triassic ocean conditions.

SourceMcGill University·JournalScience·TypeObservational study·DateFeb 9, 2023

Kory Evans wins NSF CAREER Award

Evans' five-year grant will examine how modularity affects the evolution of complex biological structures and provide a framework for their study. The research could advance our understanding of shape change in other complex structures and have cultural and historical significance.

Breakthrough in mitochondrial regulation

Researchers from Osaka University have identified a system known as the GET pathway as crucial for regulating the numbers of energy-producing mitochondria. The study found that disruption of the GET pathway leads to reduced mitophagy, a process responsible for removing defective or excess mitochondria.

SourceOsaka University·JournalLife Science Alliance·TypeExperimental study·DateJan 30, 2023

A new way to identify stresses in complex fluids

Purdue University researchers have discovered a new mathematical framework that measures stress and stretching field topologies for complex fluids. This breakthrough applies to polymeric fluids used in groundwater remediation and other industries, enabling more accurate predictions of fluid transport.

SourcePurdue University·JournalProceedings of the National Academy of Sciences·DateJan 27, 2023

Shedding light on the origin of complex life forms

Researchers at the University of Vienna and ETH Zurich have successfully cultivated a representative of the Asgard archaea, a group believed to be the closest relatives of eukaryotes. The newly developed model organism, Lokiarchaeum ossiferum, exhibits unique cellular characteristics, including an extensive cytoskeleton and complex cel...

SourceUniversity of Vienna·JournalNature·DateDec 21, 2022

A quality-conscious protein

Researchers from University of Cologne and Technical University of Munich discovered that the signal peptidase complex plays a crucial role in quality control of membrane proteins. The complex cleaves faulty membrane proteins to initiate their degradation, maintaining cellular function. This discovery has important implications for und...

SourceUniversity of Cologne·JournalScience·TypeObservational study·DateDec 1, 2022

Novel 3D printing method to fabricate complex metal–plastic composite structures

Researchers developed a novel 3D printing technique to fabricate complex metal–plastic composite structures with arbitrarily complex shapes. The process, called MM-DLP3DP, allows for the creation of precise metal patterns and high-quality metal coatings, enabling the development of highly integrated and customizable microelectronics.

SourceWaseda University·JournalACS Applied Materials & Interfaces·TypeExperimental study·DateNov 30, 2022

Researchers reveal the structure of the IFT-B complex, which is essential for formation of the cilium organelle

The study reveals the structure of the 15-subunit IFT-B complex, a crucial component in cilia formation and maintenance. The complex's elongated and flexible nature is consistent with previous low-resolution reconstructions, and two configurations are identified that may drive bi-directional movement.

SourceAarhus University·JournalThe EMBO Journal·TypeExperimental study·DateNov 10, 2022

Unveiling the dimensionality of complex networks through hyperbolic geometry

The study infers the dimensionality of complex networks using hyperbolic geometry, which captures relational structures in real-world domains. It reveals extremely low dimensions for molecular networks and higher dimensions for social networks and the Internet, with implications for network characterization and predictive capability.

SourceUniversity of Barcelona·JournalNature Communications·TypeComputational simulation/modeling·DateOct 27, 2022