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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

Concerns over bodybuilders injecting natural oils

A young bodybuilder's use of non-prescribed injections, including coconut oil and insulin, led to severe complications, including a ruptured triceps and multiple cysts. The case highlights the risks of self-administered natural oils and steroids used to achieve a desired body image.

Sony Alpha a7 IV (Body Only)

Sony Alpha a7 IV (Body Only) delivers reliable low-light performance and rugged build for astrophotography, lab documentation, and field expeditions.

Severe dizziness treated with steroid injections into the eardrum

A new study by Imperial College London suggests that steroid injections into the ear are as effective as gentamicin in treating severe Meniere's disease. Patients who received steroid injections had better speech discrimination and fewer side effects compared to those who received gentamicin.

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.

Comparing therapies for a rare autoimmune disease

Researchers compared therapies for Neuromyelitis optica, a rare autoimmune disease of the central nervous system. Plasma exchange therapy proved more effective than steroids in treating the condition's relapsing symptoms.

Creality K1 Max 3D Printer

Creality K1 Max 3D Printer rapidly prototypes brackets, adapters, and fixtures for instruments and classroom demonstrations at large build volume.

Eukaryotes: A new timetable of evolution

The discovery of microfossils in rocks dating back 1.5 billion years has confirmed the existence of eukaryotes, shedding light on their evolution and origins. The analysis of steroid molecules revealed no signs of contamination, contradicting previous findings.

Oral steroids for herniated disk do not improve pain

A study published in JAMA found that oral steroids did not significantly improve pain in patients with acute radiculopathy due to a herniated lumbar disk. However, the treatment showed small improvements in function, suggesting potential benefits for some patients.

Oral steroids for acute sciatica produce limited improvement in function and pain

A recent study published in the Journal of the American Medical Association found that short-course oral steroids resulted in only modest improvement in function and no significant reduction in pain for patients with acute sciatica. The research suggests that oral steroid treatment may not be an effective option for this common condition.

Apple iPhone 17 Pro

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

'Performance enhancing' drugs decrease performance

Research from the University of Adelaide analyzed sporting records from 1886 to 2012 and found that doping era times, distances, and results did not improve as expected. The study suggests that doping may be more widespread than thought and has a detrimental effect on performance in some areas.

New name for symptoms associated with menopause

Experts agree on a new term, Genitourinary Syndrome of Menopause (GSM), to describe the complex symptoms associated with declining estrogen levels. GSM encompasses genital dryness, sexual discomfort, and urinary issues, providing a more accurate and publicly acceptable definition.

How immune cells use steroids

Researchers discovered that Th2 immune cells produce a steroid called pregnenolone, which regulates their own proliferation and contributes to immune homeostasis. This finding confirms that immune cells are capable of producing steroids, a previously unknown mechanism.

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.

Humans have a nose for gender

Scientists found that smelling certain steroids affects people's perception of movement as masculine or feminine, depending on their biological sex and sexual orientation. The study reveals a sexually dimorphic response to pheromones in both heterosexual and homosexual individuals.

Giving steroids during bypass surgery shows no benefit, some harm

A worldwide study of 7,500 patients found that giving steroids during bypass surgery does not improve health outcomes and may increase the risk of heart attack. The study challenges a decades-long practice in cardiac surgery, suggesting that steroids should not be used prophylactically.

Fluke 87V Industrial Digital Multimeter

Fluke 87V Industrial Digital Multimeter is a trusted meter for precise measurements during instrument integration, repairs, and field diagnostics.

Need steroids? Maybe not for lower back pain

A Johns Hopkins analysis found that epidural steroid injections are only twice as effective as injections of any fluid, including anesthetics and saline, for treating lower back pain. The study suggests that smaller doses of steroids may be just as beneficial, and larger studies are needed to confirm these findings.

Therapy for severe vasculitis shows long-term effectiveness

A new study by the NIH-funded Immune Tolerance Network found that rituximab is as effective as standard therapy in inducing and maintaining disease remission in people with severe forms of vasculitis. The drug requires shorter treatment duration, reducing the risk of long-term side effects such as cancer, infertility, and infection.

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.

Anabolic steroids may affect future mental health

A study of elite male strength athletes found a strong connection between anabolic steroid use and depression, concentration problems, and aggressive behavior later in life. The study suggests that anti-doping efforts remain crucial in sports due to the cyclical relationship between substance abuse and mental health issues.

Rigol DP832 Triple-Output Bench Power Supply

Rigol DP832 Triple-Output Bench Power Supply powers sensors, microcontrollers, and test circuits with programmable rails and stable outputs.

Cardiovascular risk may remain for treated Cushing's disease patients

Researchers found that cured Cushing's disease patients who had depression when symptoms started were at elevated risk of mortality and cardiovascular disease. Men were more susceptible than women due to a lack of follow-up care, while patients with diabetes were also at higher risk of developing cardiovascular disease.

Botox beats steroids for painful foot condition, plantar fasciitis

A Mexican study suggests that Botox injections can provide faster relief from plantar fasciitis than steroid treatments, with patients showing significant improvement after six months. The study found that combining botulinum toxin A (Botox) with stretching exercises yielded better results for treating the painful foot condition.

Apple MacBook Pro 14-inch (M4 Pro)

Apple MacBook Pro 14-inch (M4 Pro) powers local ML workloads, large datasets, and multi-display analysis for field and lab teams.

Steroids that only nature could make on a large scale -- Until now

Researchers achieved a feat in synthetic chemistry by inventing a method to synthesize polyhydroxylated steroids, used in heart-failure medications and other drugs. The new strategy enables rapid modifications of hydroxylated steroids, which could help pharmaceutical chemists tweak natural toxins like ouabain.

Apple iPad Pro 11-inch (M4)

Apple iPad Pro 11-inch (M4) runs demanding GIS, imaging, and annotation workflows on the go for surveys, briefings, and lab notebooks.

The scientific side of steroid use and abuse

Research highlights the dangers of anabolic-androgenic steroids (AAS) on adolescent brain function and behavior. Studies show that exposure to AAS at critical periods during adolescence can impose permanent changes in brain organization and function, leading to physiological and psychiatric effects that may persist into middle age.

Low steroid levels linked to increased risk of cardiovascular disease

A large-scale study found that low DHEA-S levels are independently associated with a greater risk of cardiovascular-disease events. The results indicate that low DHEA-S may be protective or serve as a marker for poor general health, highlighting the need for further research to understand underlying mechanisms and potential benefits.

'Intelligent medicine' erases side effects

Scientists at Aarhus University have developed a new technology that conjugates glucocorticoid steroids to antibodies binding to macrophage receptors, reducing side effects and increasing potency. This intelligent medicine shows promise for treating various inflammatory diseases, including autoimmune disorders.

Meta Quest 3 512GB

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

Tiny plants could cut costs, shrink environmental footprint

Researchers at Purdue University have discovered that a widely available fungicide can inhibit steroid production in plants, resulting in smaller, more efficient varieties. These 'dwarfed' plants could significantly reduce agriculture's environmental footprint and costs for seed producers.

Genetically engineered compound for back pain falls short

A Johns Hopkins-led study found that etanercept, a genetically engineered small-protein drug, does not provide better relief for sciatica back pain compared to steroid injections. In the study, patients who received epidural steroid injections reported more significant pain relief and improved overall symptoms after one month.

DJI Air 3 (RC-N2)

DJI Air 3 (RC-N2) captures 4K mapping passes and environmental surveys with dual cameras, long flight time, and omnidirectional obstacle sensing.

Annals of Internal Medicine tip sheet for April 17, 2012, issue

The American College of Physicians (ACP) has released a tip sheet on screening and treatment of chronic kidney disease, concluding that regular screening offers no clear benefits. In contrast, preexposure prophylaxis (PrEP) is effective in preventing HIV infection among high-risk men who have sex with men (MSM). The ACP also notes that...

Little evidence that insect bite remedies work

Simple insect bites often resolve on their own without treatment, but over-the-counter remedies have limited efficacy. Antihistamines and steroids are not backed by strong evidence for treating itching and inflammation.

Discovery could help stem smoking-related diseases

Researchers at the University of Melbourne have discovered a potential new treatment for smoking-related lung diseases like COPD. The protein SAA plays a key role in chronic inflammation and lung damage in COPD, hindering natural healing in the lungs.

Nikon Monarch 5 8x42 Binoculars

Nikon Monarch 5 8x42 Binoculars deliver bright, sharp views for wildlife surveys, eclipse chases, and quick star-field scans at dark sites.

New anti-inflammatory drugs might help avoid side effects of steroids

Researchers at Salk Institute discover a protein that defends against cancer also plays a key role in steroids' anti-inflammatory action. Targeting this protein could lead to new drugs without steroid side effects. The study suggests some cancer patients may not need steroid treatment due to genetic mutations.

Lift weights, eat mustard, build muscles?

A new study published in the FASEB Journal found that rats fed homobrassinolide produced an anabolic effect, increasing lean body mass, muscle mass, and physical performance. The research also suggests potential applications for brassinosteroids in treating muscle wasting conditions.

GoPro HERO13 Black

GoPro HERO13 Black records stabilized 5.3K video for instrument deployments, field notes, and outreach, even in harsh weather and underwater conditions.

Arctic ground squirrels muscle up to hunker down

Arctic ground squirrels have adapted to store high levels of anabolic steroids in their muscles, allowing them to burn protein and maintain vital functions during hibernation. This unique mechanism could hold the key to understanding how to mitigate negative effects of testosterone on human health.

Etanercept shows promise for treating dermatomyositis

A multicenter pilot study found etanercept successfully weaned patients from steroid therapy, with no significant increase in adverse event rates. Larger studies are needed to investigate the safety and efficacy of etanercept for dermatomyositis treatment.

Competing treatments comparable for sudden hearing loss

A new treatment for sudden hearing loss has been found comparable to oral steroids, providing patients with more treatment options. The study showed that both treatments led to similar hearing improvements, but patients with severe hearing loss benefited more from oral steroids.

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.

Asthma pill more user friendly than inhalers -- and no less effective

Researchers found that leukotriene receptor antagonists (LTRAs) can manage chronic asthma equally successfully as steroid inhalers when used in addition to steroid inhalers. This could provide an alternative for patients who struggle with inhaler use due to side effects or preference

Genes that control 'aging' steroid identified

Researchers have uncovered 8 genes that control the main steroid produced by the adrenal gland, which is believed to play a role in aging and longevity. The study found that these genetic regions are also associated with common age-related diseases, providing the first genetic evidence for the ageing role of the steroid.

Embargoed news from Annals of Internal Medicine

Researchers find that oral steroids improve symptoms of chronic rhinosinusitis with polyposis, while surrogate treatment decisions have a significant negative emotional impact on healthcare providers. The Hepatitis B vaccine has reduced infections in children, but targeted efforts are needed for adults. The USPSTF is updating its scree...

Apple Watch Series 11 (GPS, 46mm)

Apple Watch Series 11 (GPS, 46mm) tracks health metrics and safety alerts during long observing sessions, fieldwork, and remote expeditions.