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Life Sciences

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.

447,757 articles | 2542 topics

Health and Medicine

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.

431,843 articles | 751 topics

Social Sciences

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.

260,756 articles | 745 topics

Physical Sciences

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.

257,913 articles | 1552 topics

Applied Sciences and Engineering

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.

225,386 articles | 998 topics

Scientific Community

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.

193,043 articles | 157 topics

Space Sciences

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.

29,662 articles | 175 topics

Research Methods

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.

21,889 articles | 139 topics

Mathematics

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.

3,023 articles | 113 topics

Can bariatric surgery lead to severe headache?

Spontaneous intracranial hypotension, a condition causing severe headaches, has been linked to bariatric surgery. A study found that gastric bypass and banding surgeries were associated with a small percentage of people developing the condition.

Clonidine doesn't reduce deaths or heart attack after non-cardiac surgery

The POISE-2 trial found that clonidine increased rates of clinically concerning hypotension and non-fatal cardiac arrest in patients undergoing non-cardiac surgery. The study showed higher risks from clonidine without counterbalancing benefits, contradicting earlier findings that suggested it would improve outcomes.

Sky & Telescope Pocket Sky Atlas, 2nd Edition

Sky & Telescope Pocket Sky Atlas, 2nd Edition is a durable star atlas for planning sessions, identifying targets, and teaching celestial navigation.

AmScope B120C-5M Compound Microscope

AmScope B120C-5M Compound Microscope supports teaching labs and QA checks with LED illumination, mechanical stage, and included 5MP camera.

SAMSUNG T9 Portable SSD 2TB

SAMSUNG T9 Portable SSD 2TB transfers large imagery and model outputs quickly between field laptops, lab workstations, and secure archives.

Apple iPhone 17 Pro

Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.

Mayo Clinic finds effective remedy for blood pressure drop when standing up

Researchers at Mayo Clinic found that pyridostigmine improved patients' standing blood pressure and reduced symptoms without elevating blood pressure while lying down. The study showed significant results in reducing the need for other medications, particularly in those over age 70 with common causes like diabetes and Parkinson's disease.

CalDigit TS4 Thunderbolt 4 Dock

CalDigit TS4 Thunderbolt 4 Dock simplifies serious desks with 18 ports for high-speed storage, monitors, and instruments across Mac and PC setups.

Survey shows new Mayo Clinic treatment for intractable low blood pressure

A new study from the Mayo Clinic found that pyridostigmine improves standing blood pressure without increasing blood pressure when lying down, offering a safe treatment option for patients with orthostatic hypotension. The study involved 29 patients who were satisfied with the drug's effects, with 17 taking it as their primary treatment.

Forgiveness a factor in blood pressure

A new study finds that forgiveness is associated with lower resting diastolic blood pressure, especially among low-income black individuals. The research, conducted on a diverse sample of community residents, suggests that forgiving oneself and others may help mitigate cardiovascular risk factors.

Meta Quest 3 512GB

Meta Quest 3 512GB enables immersive mission planning, terrain rehearsal, and interactive STEM demos with high-resolution mixed-reality experiences.

Study links cognitive impairment and heart failure in elderly patients

A recent study found a significant association between low systolic blood pressure levels (below 130) and cognitive impairment in older patients with heart failure. The researchers suggest that routine management of heart failure should include assessment of cognitive performance to detect early signs of cognitive dysfunction.

Researchers question drug for chronic fatigue syndrome

A study published in Journal of the American Medical Association found that fludrocortisone had little effect on symptoms of chronic fatigue syndrome. The researchers tested isolating fludrocortisone as a treatment and found no significant improvement compared to a placebo.

Steroid medication no help to CFS patients who get that faint feeling

A new study published in JAMA found that steroid hormone drug fludrocortisone does not alleviate symptoms of chronic fatigue syndrome (CFS), particularly neurally mediated hypotension (NMH). Researchers recommend further testing of other drugs or drug combinations to benefit CFS patients with NMH.

Not a brain tumor: serious headaches explained

Researchers identified enlarged pituitary glands in patients with intracranial hypotension syndrome, a condition characterized by headaches that worsen when sitting up. The condition can be diagnosed through low spinal cord fluid pressure readings and treated with conventional therapies such as bed rest, hydration, and corticosteroids.

Garmin GPSMAP 67i with inReach

Garmin GPSMAP 67i with inReach provides rugged GNSS navigation, satellite messaging, and SOS for backcountry geology and climate field teams.

Tracking a genetic basis for alcohol-related hypertension

A study in mice found that genetic background influences blood-pressure response to acute alcohol exposure, with some strains experiencing increased blood pressure and others not. The findings suggest a predisposition to greater increases in blood pressure with alcohol consumption, potentially leading to hypertension.

Parkinson’s disease is more than just a brain disorder

A new study reveals Parkinson's disease is associated with a loss of norepinephrine-producing nerve endings in the heart, improving understanding of the disorder's development and potential prevention. This finding also sheds light on orthostatic hypotension, a common complication characterized by dizziness and fainting.

New study confirms importance of systolic blood pressure

A new study from the National Heart, Lung, and Blood Institute finds that systolic blood pressure is more accurate than diastolic pressure in identifying patients with hypertension. The study suggests that future treatment guidelines may emphasize systolic pressure, which correctly classified nearly 96% of patients.

GQ GMC-500Plus Geiger Counter

GQ GMC-500Plus Geiger Counter logs beta, gamma, and X-ray levels for environmental monitoring, training labs, and safety demonstrations.

New Data Show Dangerous Interaction Between Blood Pressure Drugs

Case reports reveal four patients died or went into shock after switching from mibefradil to other calcium channel blockers, highlighting the dangerous interaction between the two drugs. The risk is attributed to mibefradil's long half-life and its ability to inhibit liver enzymes that metabolize other medications.