Articles tagged with Direct Current
Comprehensive exploration of living organisms, biological systems, and life processes across all scales from molecules to ecosystems. Encompasses cutting-edge research in biology, genetics, molecular biology, ecology, biochemistry, microbiology, botany, zoology, evolutionary biology, genomics, and biotechnology. Investigates cellular mechanisms, organism development, genetic inheritance, biodiversity conservation, metabolic processes, protein synthesis, DNA sequencing, CRISPR gene editing, stem cell research, and the fundamental principles governing all forms of life on Earth.
Comprehensive medical research, clinical studies, and healthcare sciences focused on disease prevention, diagnosis, and treatment. Encompasses clinical medicine, public health, pharmacology, epidemiology, medical specialties, disease mechanisms, therapeutic interventions, healthcare innovation, precision medicine, telemedicine, medical devices, drug development, clinical trials, patient care, mental health, nutrition science, health policy, and the application of medical science to improve human health, wellbeing, and quality of life across diverse populations.
Comprehensive investigation of human society, behavior, relationships, and social structures through systematic research and analysis. Encompasses psychology, sociology, anthropology, economics, political science, linguistics, education, demography, communications, and social research methodologies. Examines human cognition, social interactions, cultural phenomena, economic systems, political institutions, language and communication, educational processes, population dynamics, and the complex social, cultural, economic, and political forces shaping human societies, communities, and civilizations throughout history and across the contemporary world.
Fundamental study of the non-living natural world, matter, energy, and physical phenomena governing the universe. Encompasses physics, chemistry, earth sciences, atmospheric sciences, oceanography, materials science, and the investigation of physical laws, chemical reactions, geological processes, climate systems, and planetary dynamics. Explores everything from subatomic particles and quantum mechanics to planetary systems and cosmic phenomena, including energy transformations, molecular interactions, elemental properties, weather patterns, tectonic activity, and the fundamental forces and principles underlying the physical nature of reality.
Practical application of scientific knowledge and engineering principles to solve real-world problems and develop innovative technologies. Encompasses all engineering disciplines, technology development, computer science, artificial intelligence, environmental sciences, agriculture, materials applications, energy systems, and industrial innovation. Bridges theoretical research with tangible solutions for infrastructure, manufacturing, computing, communications, transportation, construction, sustainable development, and emerging technologies that advance human capabilities, improve quality of life, and address societal challenges through scientific innovation and technological progress.
Study of the practice, culture, infrastructure, and social dimensions of science itself. Addresses how science is conducted, organized, communicated, and integrated into society. Encompasses research funding mechanisms, scientific publishing systems, peer review processes, academic ethics, science policy, research institutions, scientific collaboration networks, science education, career development, research programs, scientific methods, science communication, and the sociology of scientific discovery. Examines the human, institutional, and cultural aspects of scientific enterprise, knowledge production, and the translation of research into societal benefit.
Comprehensive study of the universe beyond Earth, encompassing celestial objects, cosmic phenomena, and space exploration. Includes astronomy, astrophysics, planetary science, cosmology, space physics, astrobiology, and space technology. Investigates stars, galaxies, planets, moons, asteroids, comets, black holes, nebulae, exoplanets, dark matter, dark energy, cosmic microwave background, stellar evolution, planetary formation, space weather, solar system dynamics, the search for extraterrestrial life, and humanity's efforts to explore, understand, and unlock the mysteries of the cosmos through observation, theory, and space missions.
Comprehensive examination of tools, techniques, methodologies, and approaches used across scientific disciplines to conduct research, collect data, and analyze results. Encompasses experimental procedures, analytical methods, measurement techniques, instrumentation, imaging technologies, spectroscopic methods, laboratory protocols, observational studies, statistical analysis, computational methods, data visualization, quality control, and methodological innovations. Addresses the practical techniques and theoretical frameworks enabling scientists to investigate phenomena, test hypotheses, gather evidence, ensure reproducibility, and generate reliable knowledge through systematic, rigorous investigation across all areas of scientific inquiry.
Study of abstract structures, patterns, quantities, relationships, and logical reasoning through pure and applied mathematical disciplines. Encompasses algebra, calculus, geometry, topology, number theory, analysis, discrete mathematics, mathematical logic, set theory, probability, statistics, and computational mathematics. Investigates mathematical structures, theorems, proofs, algorithms, functions, equations, and the rigorous logical frameworks underlying quantitative reasoning. Provides the foundational language and tools for all scientific fields, enabling precise description of natural phenomena, modeling of complex systems, and the development of technologies across physics, engineering, computer science, economics, and all quantitative sciences.
Researchers at IISc have developed a novel cascaded H-bridge-based multiport DC converter to directly connect to the medium-voltage AC grid, eliminating the need for large and expensive LFTs. This technology offers a 3-5% improvement in energy efficiency and reduces costs, making electric vehicle charging stations environmentally frien...
An international team successfully realizes periodic oscillations and transportation for optical pulses using a synthetic temporal lattice. They observe the features of SBO collapse, including vanishing oscillation amplitude and flip of initial oscillation direction.
A team of NUS researchers developed a compact and sensitive rectifier technology that uses nanoscale spin-rectifiers to convert ambient wireless radio frequency signals into DC voltage. The technology overcomes challenges in existing energy harvesting modules, enabling battery-free operation for small electronic devices.
New research reveals offshore windfarm electromagnetic fields have minimal impact on shark growth and survival, but ongoing studies aim to improve understanding of effects on marine species. The study focused on small-spotted catshark development under control and windfarm-impacted conditions using AC or DC currents.
A new DC-DC power converter designed by Kobe University team offers superior voltage ratio, system stability, and simplicity, achieving an impressive efficiency of up to 98.3%. The device can efficiently interface with various energy sources, making it suitable for renewable energy integration and electric vehicle applications.
A new study combines virtual reality exposure with transcranial direct current stimulation to treat post-traumatic stress disorder in military veterans. The innovative approach shows significant reductions in PTSD symptom severity and accelerates psychological adjustment, offering hope for an effective treatment.
Scientists from NC State University have discovered a way to manipulate the flow of heat through ferroelectric materials by applying different electric fields. The study, published in Advanced Materials, found that varying electric field strengths, types (AC/DC), time, and frequency can alter the thermal properties of these materials.
Researchers at the University of Central Florida have created a technology that converts radio frequency signals into direct current electricity, reducing the need for batteries in wireless systems. This innovation can help promote a more sustainable future by harnessing ambient energy from radio waves.
Research highlights the impact of historical development on US coastal zones' exposure to sea level rise and hurricanes. The study uses historical data to better understand how development contributes to increased vulnerability.
The study found that cathodal tDCS enhances the acquisition of abstract semantics, while anodal tDCS shows more success in learning concrete concepts. The results suggest that different neural mechanisms are involved in processing abstract and concrete word meanings.
Researchers found no clinically significant changes in metabolite levels after transcranial direct current stimulation (tDCS) treatment. The study's results support the understanding of tDCS as a safe treatment option, even when considering metabolic effects.
Dr. Potter-Baker received the award for her research on transcranial direct current stimulation for upper limb functional recovery after spinal cord injury. The study was published in 2017 and has shown promising results.
A new system developed by UC3M researchers allows for efficient energy transmission from offshore wind farms to the mainland electrical grid. The system uses a distributed control system and diode rectifier stations to synchronize wind turbine voltage and frequency, reducing costs by up to 30%.
Researchers have developed a concept to preferentially inhibit pain-transmitting neurons using direct electrical current. The new approach could reduce side effects of conventional devices, allowing for more precise targeting of pain-transmitting nerve cells.
A clinical trial found that noninvasive brain stimulation and physical therapy alone or in combination improve some measures of walking ability in patients with Parkinson's disease. Walking speed increased by an average of 19 percent, with improvements lasting for at least eight weeks after treatment.
Researchers at Kanazawa University found that transcranial direct current stimulation (tDCS) on the lateral occipito-temporal cortex (LOTC) improved mental manipulation of body part imagery. This improvement was observed in healthy adults, indicating potential benefits for exercise learning and rehabilitation outcomes.
Researchers found that a 20-minute session of transcranial direct current stimulation (tDCS) improves bulimia symptoms, mood, and self-regulatory control. This breakthrough study offers hope for a new therapy for the mental health condition.
Researchers found that transcranial direct current stimulation causes synchronized calcium surges from astrocytes, reducing depressive symptoms and increasing neural plasticity. This effect is absent when blocking astrocytic calcium surges, highlighting their importance in therapeutic outcomes.
The team uses multiwall carbon nanotubes and tiny rectifiers to create an antenna that captures light from the sun or other sources, producing a small direct current. The efficiency of the devices is below one percent, but the researchers hope to boost it through optimization techniques.
Researchers have developed a new non-invasive brain stimulation technique that increases brain excitability, potentially improving physical performance and treating neurological disorders. The technique, called transcranial pulsed current stimulation (tPCS), produces larger changes in the brain than conventional methods.
Researchers found that transcranial direct current stimulation led to improvements in short-term memory and subtle changes in word retrieval in people with schizophrenia. The study suggests that this type of brain stimulation might ease some cognitive difficulties, enabling individuals to lead a more normal life.
Researchers at General Electric and Princeton Plasma Physics Laboratory have collaborated on designing a plasma-based power switch, which could contribute to the US power grid's advancement and reliability. The switch utilizes a compact, low-cost design, potentially reducing utility bills and enhancing grid efficiency.
Researchers propose using direct current lines to improve power transmission and balance renewable energy production. The GISEL group develops new VSC technology for converters, offering advantages in controlling power transmission and reducing losses.
Researchers from the Chinese Academy of Sciences found that electrical stimulation with a reversed polarity can effectively modulate injury potentials and promote the spontaneous repair of cell membranes in rats with spinal cord injuries. This study proposes a method to define stimulation intensity based on injury potential values.
A new study published in Restorative Neurology and Neuroscience has shown that transcranial direct current stimulation (tDCS) can enhance the outcome of swallowing therapy for post-stroke dysphagia. tDCS improved post-stroke dysphagia in patients with long-lasting effects observed over three months.
Researchers found that transcranial direct current stimulation (tDCS) can improve delicate task performance by 24%, outperforming single-hemisphere and sham treatments. The study used healthy volunteers to test the effects of dual-hemisphere tDCS, showing significant benefits for non-dominant hand skills.
Researchers have developed smaller and lighter power adapters that can convert AC to DC power for laptops, enabling compact designs. The piezoelectric transformers are suitable for various appliances requiring an AC-DC converter and transformer.