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Progressive disease or progressive illness is a disease or physical ailment whose course in most cases is the worsening, growth, or spread of the disease. This may happen until death, serious debility, or organ failure occurs. Some progressive diseases can be halted and reversed by treatment (surgical, dietary, or lifestyle interventions)
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A computer-based protocol system is a paradigm providing a set of tools which allow health care providers access to current guidelines which they can apply in practice. Studies have shown that protocols can aid in optimising patient care. There are two types of protocol systems: passive and active
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Pus is an exudate, typically white-yellow, yellow, or yellow-brown, formed at the site of inflammation during bacterial or fungal infection. An accumulation of pus in an enclosed tissue space is known as an abscess, whereas a visible collection of pus within or beneath the epidermis is known as a pustule, pimple or spot.
Description
Pus consists of a thin, protein-rich fluid (historically known as liquor puris) and dead leukocytes from the body's immune response (mostly neutrophils)
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In general, quality of life (QoL or QOL) is the perceived quality of an individual's daily life, that is, an assessment of their well-being or lack thereof. This includes all emotional, social and physical aspects of the individual's life. In health care, health-related quality of life (HRQoL) is an assessment of how the individual's well-being may be affected over time by a disease, disability or disorder
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The quaternary prevention, concept coined by the Belgian general practitioner Marc Jamoulle, are the actions taken to identify a patient at risk of overmedicalisation, to protect them from new medical invasion, and to suggest interventions which are ethically acceptable. Quaternary prevention is the set of health activities to mitigate or avoid the consequences of unnecessary or excessive intervention of the health system.
Explanation of term
Marc Jamoulle divided medical situations into four quadrants based on if the patient was experiencing illness (i
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Radiofrequency ablation (RFA), also called fulguration, is a medical procedure in which part of the electrical conduction system of the heart, tumor or other dysfunctional tissue is ablated using the heat generated from medium frequency alternating current (in the range of 350–500 kHz). RFA is generally conducted in the outpatient setting, using either local anesthetics or twilight anesthesia. When it is delivered via catheter, it is called radiofrequency catheter ablation
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A rapid antigen test (RAT), sometimes called a rapid antigen detection test (RADT), antigen rapid test (ART), or loosely just a rapid test, is a rapid diagnostic test suitable for point-of-care testing that directly detects the presence or absence of an antigen. RATs are a type of lateral flow test detecting antigens, rather than antibodies (antibody tests) or nucleic acid (nucleic acid tests). Rapid tests generally give a result in 5 to 30 minutes, require minimal training or infrastructure, and have significant cost advantages
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A rapid diagnostic test (RDT) is a medical diagnostic test that is quick and easy to perform. RDTs are suitable for preliminary or emergency medical screening and for use in medical facilities with limited resources. They also allow point-of-care testing in primary care for things that formerly only a laboratory test could measure
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The rapid strep test (RST) is a rapid antigen detection test (RADT) that is widely used in clinics to assist in the diagnosis of bacterial pharyngitis caused by group A streptococci (GAS), sometimes termed strep throat. There are currently several types of rapid strep test in use, each employing a distinct technology. However, they all work by detecting the presence of GAS in the throat of a person by responding to GAS-specific antigens on a throat swab
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Remission is either the reduction or disappearance of the signs and symptoms of a disease. The term may also be used to refer to the period during which this reduction occurs. A remission may be considered a partial remission or a complete remission
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Responsible drug use maximizes the benefits and reduces the risk of negative impact psychoactive drugs cause on the lives of the user. For illegal psychoactive drugs that are not diverted prescription controlled substances, some critics believe that illegal recreational drug use is inherently irresponsible, due to the unpredictable and unmonitored strength and purity of the drugs and the risks of addiction, infection, and other side effects.
Nevertheless, harm reduction advocates claim that the user can be responsible by employing the same general principles applicable to the use of alcohol: avoiding hazardous situations, excessive doses, and hazardous combinations of drugs; avoiding injection; and not using drugs at the same time as activities that may be unsafe without a sober state
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A review of systems (ROS), also called a systems enquiry or systems review, is a technique used by healthcare providers for eliciting a medical history from a patient. It is often structured as a component of an admission note covering the organ systems, with a focus upon the subjective symptoms perceived by the patient (as opposed to the objective signs perceived by the clinician). Along with the physical examination, it can be particularly useful in identifying conditions that do not have precise diagnostic tests
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Right atrial pressure (RAP) is the blood pressure in the right atrium of the heart. RAP reflects the amount of blood returning to the heart and the ability of the heart to pump the blood into the arterial system. RAP is often nearly identical to central venous pressure (CVP), although the two terms are not identical, as a pressure differential can sometimes exist between the venae cavae and the right atrium
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A right-to-left shunt is a cardiac shunt which allows blood to flow from the right heart to the left heart. This terminology is used both for the abnormal state in humans and for normal physiological shunts in reptiles.
Clinical Significance
A right-to-left shunt occurs when:
there is an opening or passage between the atria, ventricles, and/or great vessels; and,
right heart pressure is higher than left heart pressure and/or the shunt has a one-way valvular opening
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Risk of infection is a nursing diagnosis which is defined as "the state in which an individual is at risk to be invaded by an opportunistic or pathogenic agent (virus, fungus, bacteria, protozoa, or other parasite) from endogenous or exogenous sources" and was approved by NANDA in 1986. Although anyone can become infected by a pathogen, patients with this diagnosis are at an elevated risk and extra infection controls should be considered.
Endogenous sources
The risk of infection depends on a number of endogenous sources
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The risk of mortality (ROM) provides a medical classification to estimate the likelihood of in-hospital death for a patient. The ROM classes are minor, moderate, major, and extreme. The ROM class is used for the evaluation of patient mortality
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Risky sexual behavior is the description of the activity that will increase the probability that a person engaging in sexual activity with another person infected with a sexually transmitted infection will be infected or become pregnant, or make a partner pregnant. It can mean two similar things: the behavior itself, and the description of the partner's behavior. The behavior could be unprotected vaginal, oral, or anal intercourse
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Screening, in medicine, is a strategy used to look for as-yet-unrecognised conditions or risk markers. This testing can be applied to individuals or to a whole population. The people tested may not exhibit any signs or symptoms of a disease, or they might exhibit only one or two symptoms, which by themselves do not indicate a definitive diagnosis
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The adjective secretomotor refers to the capacity of a structure (often a nerve) to induce a gland to secrete a substance (usually mucus or serous fluid).
Secretomotor nerve endings are frequently contrasted with sensory neuron endings and motor nerve endings. An example of secretomotor activity can be seen with the lacrimal gland, which secretes the aqueous layer of the tear film
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Sedentary lifestyle is a lifestyle type, in which one is physically inactive and does little or no physical movement and or exercise. A person living a sedentary lifestyle is often sitting or lying down while engaged in an activity like socializing, watching TV, playing video games, reading or using a mobile phone or computer for much of the day. A sedentary lifestyle contributes to poor health quality, diseases as well as many preventable causes of death
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Self-diagnosis is the process of diagnosing, or identifying, medical conditions in oneself. It may be assisted by medical dictionaries, books, resources on the Internet, past personal experiences, or recognizing symptoms or medical signs of a condition that a family member previously had.
Depending on the nature of an individual's condition and the accuracy of the information they access, self-diagnoses can vary greatly in their safety
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A sequela (UK: , US: ; usually used in the plural, sequelae ) is a pathological condition resulting from a disease, injury, therapy, or other trauma. Derived from the Latin word meaning "sequel", it is used in the medical field to mean a complication or condition following a prior illness or disease. A typical sequela is a chronic complication of an acute condition—in other words, a long-term effect of a temporary disease or injury—which follows immediately from the condition
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Sever's disease, also known as calcaneus apophysitis, is an inflammation at the back of the heel (or calcaneus) growth plate in growing children. The condition is thought to be caused by repetitive stress at the heel. This condition is benign and common and usually resolves when the growth plate has closed or during periods of less activity
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Severity of illness (SOI) is defined as the extent of organ system derangement or physiologic decompensation for a patient. It gives a medical classification into minor, moderate, major, and extreme. The SOI class is meant to provide a basis for evaluating hospital resource use or to establish patient care guidelines
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Sham surgery (placebo surgery) is a faked surgical intervention that omits the step thought to be therapeutically necessary.
In clinical trials of surgical interventions, sham surgery is an important scientific control. This is because it isolates the specific effects of the treatment as opposed to the incidental effects caused by anesthesia, the incisional trauma, pre- and postoperative care, and the patient's perception of having had a regular operation
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Simultanagnosia (or simultagnosia) is a rare neurological disorder characterized by the inability of an individual to perceive more than a single object at a time. This type of visual attention problem is one of three major components (the others being optic ataxia and optic apraxia) of Bálint's syndrome, an uncommon and incompletely understood variety of severe neuropsychological impairments involving space representation (visuospatial processing). The term "simultanagnosia" was first coined in 1924 by Wolpert to describe a condition where the affected individual could see individual details of a complex scene but failed to grasp the overall meaning of the image
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Skull bossing is a descriptive term in medical physical examination indicating a protuberance of the skull, most often in the frontal bones of the forehead ("frontal bossing"). Although prominence of the skull bones may be normal, skull bossing may be associated with certain medical conditions, including nutritional, metabolic, hormonal, and hematologic disorders.
Frontal bossing
Frontal bossing is the development of an unusually pronounced forehead which may also be associated with a heavier than normal brow ridge
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Slipped capital femoral epiphysis (SCFE or skiffy, slipped upper femoral epiphysis, SUFE or souffy, coxa vara adolescentium) is a medical term referring to a fracture through the growth plate (physis), which results in slippage of the overlying end of the femur (metaphysis).
Normally, the head of the femur, called the capital, should sit squarely on the femoral neck. Abnormal movement along the growth plate results in the slip
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The SOAP note (an acronym for subjective, objective, assessment, and plan) is a method of documentation employed by healthcare providers to write out notes in a patient's chart, along with other common formats, such as the admission note. Documenting patient encounters in the medical record is an integral part of practice workflow starting with appointment scheduling, patient check-in and exam, documentation of notes, check-out, rescheduling, and medical billing. Additionally, it serves as a general cognitive framework for physicians to follow as they assess their patients
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The field of social medicine seeks to implement social care through
understanding how social and economic conditions impact health, disease and the practice of medicine and
fostering conditions in which this understanding can lead to a healthier society. Social medicine as a scientific field gradually began in the early 19th century, the Industrial Revolution and the subsequent increase in poverty and disease among workers raised concerns about the effect of social processes on the health of the poor. The field of social medicine is most commonly addressed today by public health efforts to understand what are known as social determinants of health
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Social-emotional agnosia, also known as emotional agnosia or expressive agnosia, is the inability to perceive facial expressions, body language, and voice intonation. A person with this disorder is unable to non-verbally perceive others' emotions in social situations, limiting normal social interactions. The condition causes a functional blindness to subtle non-verbal social-emotional cues in voice, gesture, and facial expression
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Sopor is a condition of abnormally deep sleep or a stupor from which it is difficult to rouse a person. It involves a profound depression of consciousness, which is manifested by drowsiness, while maintaining coordinated defensive reactions to stimuli such as pain, harsh sound, and bright light, and preserving vital functions. Sopor may be caused by a drug; such drugs are deemed soporific
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The SPIKES protocol is a method used in clinical medicine to break bad news to patients and families. As receiving bad news can cause distress and anxiety, clinicians need to deliver the news carefully. By using the SPIKES method for introducing and communicating information to patients and their families, it can aid in the presentation of the material
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Spinnbarkeit (English: spinnability), also known as fibrosity, is a biomedical rheology term which refers to the stringy or stretchy property found to varying degrees in mucus, saliva, albumen and similar viscoelastic fluids. The term is used especially with reference to cervical mucus at the time just prior to or during ovulation.
Under the influence of estrogens, cervical mucus becomes abundant, clear, and stretchable, and somewhat like egg white
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A spontaneous breathing trial is a test for patients on mechanical ventilation, before they can be weaned from the ventilator, i. e. return to normal breathing
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Spontaneous remission, also called spontaneous healing or spontaneous regression, is an unexpected improvement or cure from a disease that usually progresses. These terms are commonly used for unexpected transient or final improvements in cancer. Spontaneous remissions concern cancers of the haematopoietic system (blood cancer, e
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A subclinical infection—sometimes called a preinfection or inapparent infection—is an infection by a pathogen that causes few or no signs or symptoms of infection in the host. Subclinical infections can occur in both humans and animals. Depending on the pathogen, which can be a virus or intestinal parasite, the host may be infectious and able to transmit the pathogen without ever developing symptoms; such a host is called an asymptomatic carrier
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A subluxation is an incomplete or partial dislocation of a joint or organ. According to the World Health Organization (WHO), a subluxation is a "significant structural displacement", and is therefore always visible on static imaging studies, such as X-rays. By contrast, the pseudoscientific concept of a chiropractic "vertebral subluxation" may or may not be visible on x-rays
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Sudden unexpected death in epilepsy (SUDEP) is a fatal complication of epilepsy. It is defined as the sudden and unexpected, non-traumatic and non-drowning death of a person with epilepsy, without a toxicological or anatomical cause of death detected during the post-mortem examination. While the mechanisms underlying SUDEP are still poorly understood, it is possibly the most common cause of death as a result of complications from epilepsy, accounting for between 7
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Sudomotor function refers to the autonomic nervous system control of sweat gland activity in response to various environmental and individual factors. Sweat production is a vital thermoregulatory mechanism used by the body to prevent heat-related illness as the evaporation of sweat is the body’s most effective method of heat reduction and the only cooling method available when the air temperature rises above skin temperature. In addition, sweat plays key roles in grip, microbial defense, and wound healing
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Historically, suicide terminology has been rife with issues of nomenclature, connotation, and outcomes, and terminology describing suicide has often been defined differently depending on the purpose of the definition (e. g. , medical, legal, administrative)
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The surgical sieve is a thought process in medicine. It is a typical example of how to organise a structured examination answer for medical students and physicians when they are challenged with a question. It is also a way of constructing answers to questions from patients and their relatives in a logical manner, and structuring articles and reference texts in medicine
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Surgical smoke is the by-product produced by electrosurgery, laser tissue ablation, or other surgical techniques. Surgical smoke, as a health threat to those exposed to it, has become a growing concern. Studies have demonstrated, depending on several factors, to possibly contain carcinogens, mutagens, irritant chemicals, live viruses and bacteria, and viable malignant cells
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A surrogate decision maker, also known as a health care proxy or as agents, is an advocate for incompetent patients. If a patient is unable to make decisions for themselves about personal care, some agent must make decisions for them. If there is a durable power of attorney for health care, the agent appointed by that document is authorized to make health care decisions within the scope of authority granted by the document
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In clinical trials, a surrogate endpoint (or surrogate marker) is a measure of effect of a specific treatment that may correlate with a real clinical endpoint but does not necessarily have a guaranteed relationship. The National Institutes of Health (USA) defines surrogate endpoint as "a biomarker intended to substitute for a clinical endpoint". Surrogate markers are used when the primary endpoint is undesired (e
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Symptomatic treatment, supportive care, supportive therapy, or palliative treatment is any medical therapy of a disease that only affects its symptoms, not the underlying cause. It is usually aimed at reducing the signs and symptoms for the comfort and well-being of the patient, but it also may be useful in reducing organic consequences and sequelae of these signs and symptoms of the disease. In many diseases, even in those whose etiologies are known (e
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A systemic disease is one that affects a number of organs and tissues, or affects the body as a whole.
Examples
Mastocytosis, including mast cell activation syndrome and eosinophilic esophagitis
Chronic fatigue syndrome
Systemic vasculitis e. g
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Terminal illness or end-stage disease is a disease that cannot be cured or adequately treated and is expected to result in the death of the patient. This term is more commonly used for progressive diseases such as cancer, dementia or advanced heart disease than for injury. In popular use, it indicates a disease that will progress until death with near absolute certainty, regardless of treatment
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Testicular microlithiasis is an unusual condition diagnosed on testicular ultrasound. It is believed to be found in 0. 1–0
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Therapeutic inertia (also known as clinical inertia) is a measurement of the resistance to therapeutic treatment for an existing medical condition. It is commonly measured as a percentage of the number of encounters in which a patient with a condition received new or increased therapeutic treatment out of the total number of visits to a health care professional by the patient. A high percentage indicates that the health care provider is slow to treat a medical condition
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A topical medication is a medication that is applied to a particular place on or in the body. Most often topical medication means application to body surfaces such as the skin or mucous membranes to treat ailments via a large range of classes including creams, foams, gels, lotions, and ointments. Many topical medications are epicutaneous, meaning that they are applied directly to the skin
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A toxidrome (a portmanteau of toxic and syndrome) is a syndrome caused by a dangerous level of toxins in the body. The term was coined in 1970 by Mofenson and Greensher. It is often the consequence of a drug overdose
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A ureterovaginal fistula is an abnormal passageway existing between the ureter and the vagina. It presents as urinary incontinence. Its impact on women is to reduce the "quality of life dramatically
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Blood vessels are the components of the circulatory system that transport blood throughout the human body. These vessels transport blood cells, nutrients, and oxygen to the tissues of the body. They also take waste and carbon dioxide away from the tissues
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The Pannonian Sea was a shallow ancient lake, where the Pannonian Basin in Central Europe is now. The Pannonian Sea existed from about 10 Ma (million years ago) until 1 Ma, during the Miocene and Pliocene epochs, when marine sediments were deposited to a depth of 3–4 km (1. 9–2
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The Biodiversity of Cape Town is the variety and variability of life within the geographical extent of the City of Cape Town metropolitan municipality, excluding the Prince Edward Islands. The terrestrial vegetation is particularly diverse and much of it is endemic to the city and its vicinity. Terrestrial and freshwater animal life is heavily impacted by urban development and habitat degradation
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Colpomenia sinuosa, commonly named the oyster thief or sinuous ballweed, is a brown algae species in the genus Colpomenia. It is the type species of its genus and is widespread in tropical to temperate zones around the world. It is superficially similar to the Colpomenia peregrina species and in older texts, such as Knight and Parke (1931), C
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The Solar Electric Light Fund (SELF) is a non-profit organization whose mission is to design, fund and implement solar energy solutions to benefit those in poor rural communities without access to an electrical grid. This allows students to study at night and brings computers and Internet into schools. It makes it possible to bring in water for irrigation without having to hand-carry it long distances, allowing women to spend their time on money-earning enterprises
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Worldchanging was a nonprofit online publisher that operated from 2003 to 2010. Its strapline was A bright green future. It published newsletters and books about sustainability, bright green environmentalism, futurism and social innovation
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BlackSky Pathfinder-1 is an Earth imaging satellite. The satellite is equipped with payloads from Harris Corporation designed to image an area approximately 4. 4 × 6
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Earth Observing-1 (EO-1) is a decommissioned NASA Earth observation satellite created to develop and validate a number of instrument and spacecraft bus breakthrough technologies. It was intended to enable the development of future Earth imaging observatories that will have a significant increase in performance while also having reduced cost and mass. The spacecraft was part of the New Millennium Program
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The Innovative Satellite Technology Demonstration Program is a series of spacecraft missions for testing technology and ideas put forward by universities and private companies. The program demonstrates various experimental devices and technology in space by providing flight opportunities. It is managed by the JAXA Research and Development Directorate
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Iodine Satellite (iSat) is a technology demonstration satellite of the CubeSat format that will undergo high changes in velocity (up to 300 meters/second) from a primary propulsion system by using a Hall thruster with iodine as the propellant. The spacecraft will also perform changes of its orbital altitude, and demonstrate deorbit capabilities to reduce space junk. As of 2014 iSat was being developed by NASA's Glenn Research Center, and was initially planned as a secondary payload for launch in mid-2018, but launch was delayed to allow for the propulsion system development to mature
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LOXSAT is a NASA funded cryogenic fluid management demonstration satellite mission. Eta Space is building the payload.
It is scheduled to launch no earlier than March 2024 on a Rocket Lab Electron launcher
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The Optical Inter-orbit Communications Engineering Test Satellite (OICETS), also called Kirari, was an experimental satellite launched by JAXA to demonstrate interorbital communication between satellites through optical (laser) means. OICETS was originally slated for a launch on the second J-I launcher. Due to problems with that launcher, the launch had to be put on hold
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ParkinsonSAT, PSat or Naval Academy OSCAR 84 is a U. S. technology demonstration satellite and an amateur radio satellite for Packet Radio
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RaInCube, also stylized as RainCube, was a 6U CubeSat made by NASA as an experimental satellite. It had a small radar and an antenna. It was put into orbit in May 2018 and was deployed from the International Space Station on June 25, 2018
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3D printing or additive manufacturing is the construction of a three-dimensional object from a CAD model or a digital 3D model. It can be done in a variety of processes in which material is deposited, joined or solidified under computer control, with material being added together (such as plastics, liquids or powder grains being fused), typically layer by layer.
In the 1980s, 3D printing techniques were considered suitable only for the production of functional or aesthetic prototypes, and a more appropriate term for it at the time was rapid prototyping
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3D concrete printing, or simply concrete printing, refers to digital fabrication processes for cementitious materials based on one of several different 3D printing technologies. 3D printed concrete eliminates the need for formwork, reducing material waste and allowing for greater geometric freedom in complex structures. With recent developments in mix design and 3D printing technology over the last decade, 3D concrete printing has grown exponentially since its emergence in the 1990s
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3D food printing is the process of manufacturing food products using a variety of additive manufacturing techniques. Most commonly, food grade syringes hold the printing material, which is then deposited through a food grade nozzle layer by layer. The most advanced 3D food printers have pre-loaded recipes on board and also allow the user to remotely design their food on their computers, phones or some IoT device
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A 3D printer extruder is a filament feeding mechanism used in many fused filament fabrication (FFF) 3D printers. There are several types of 3D printer extruders. A Bowden extruder is a type of extruder that pushes filament through a long and flexible PTFE (Teflon) tube to the hot end
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3D printing filament is the thermoplastic feedstock for fused deposition modeling 3D printers. There are many types of filament available with different properties. Filament comes in a range of diameters, most commonly 1
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3D printing speed measures the amount of manufactured material over a given time period (
amount
/
time
{\displaystyle {\text{amount}}/{\text{time}}}
), where the unit of time is measured in Seconds, and the unit of manufactured material is typically measured in units of either kg, mm or cm3, depending on the type of additive manufacturing technique.
The following table compares the speeds of commercially relevant 3D printing technologies.
3D printing speed refers to only the build stage, a subcomponent of the entire 3D printing process
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A 3D selfie is a 3D-printed scale replica of a person or their face. These three-dimensional selfies are also known as 3D portraits, 3D figurines, 3D-printed figurines, mini-me figurines and miniature statues. In 2014 a first 3D printed bust of a President, Barack Obama, was made
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The 3Doodler is a 3D pen developed by Peter Dilworth, Maxwell Bogue, and Daniel Cowen of WobbleWorks, Inc. (formerly WobbleWorks LLC). The 3Doodler works by extruding heated plastic that cools almost instantly into a solid, stable structure, allowing for the free-hand creation of three-dimensional objects
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4-dimensional printing (4D printing; also known as 4D bioprinting, active origami, or shape-morphing systems) uses the same techniques of 3D printing through computer-programmed deposition of material in successive layers to create a three-dimensional object. However, in 4D printing, the resulting 3D shape is able to morph into different forms in response to environmental stimulus, with the 4th dimension being the time-dependent shape change after the printing. It is therefore a type of programmable matter, wherein after the fabrication process, the printed product reacts with parameters within the environment (humidity, temperature, voltage, etc
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An aluminum polymer composite (APC) material combines aluminum with a polymer to create materials with interesting characteristics. In 2014 researchers used a 3d laser printer to produce a polymer matrix. When coated with a 50-100 nanometer layer of aluminum oxide, the material was able to withstand loads of as much as 280 megapascals, stronger than any other known material whose density was less than 1,000 kilograms per cubic metre (1,700 lb/cu yd), that of water
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https://huggingface.co/datasets/fmars/wiki_stem
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In recent years, 3D printing has developed significantly and can now perform crucial roles in many applications, with the most common applications being manufacturing, medicine, architecture, custom art and design, and can vary from fully functional to purely aesthetic applications.
3D printing processes are finally catching up to their full potential, and are currently being used in manufacturing and medical industries, as well as by sociocultural sectors which facilitate 3D printing for commercial purposes. There has been a lot of hype in the last decade when referring to the possibilities we can achieve by adopting 3D printing as one of the main manufacturing technologies
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https://huggingface.co/datasets/fmars/wiki_stem
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Autodesk Inventor is a computer-aided design application for 3D mechanical design, simulation, visualization, and documentation developed by Autodesk.
Features
Inventor allows 2D and 3D data integration in a single environment, creating a virtual representation of the final product that enables users to validate the form, fit, and function of the product before it is ever built. Autodesk Inventor includes parametric, direct edit and freeform modeling tools as well as multi-CAD translation capabilities and in their standard DWG drawings
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https://huggingface.co/datasets/fmars/wiki_stem
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Three dimensional (3D) bioprinting is the utilization of 3D printing–like techniques to combine cells, growth factors, and/or biomaterials to fabricate biomedical parts, often with the aim of imitating natural tissue characteristics. Generally, 3D bioprinting can utilize a layer-by-layer method to deposit materials known as bio-inks to create tissue-like structures that are later used in various medical and tissue engineering fields. 3D bioprinting covers a broad range of bioprinting techniques and biomaterials
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https://huggingface.co/datasets/fmars/wiki_stem
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Bioprinting drug delivery is a method of using three-dimensional printing of biomaterials through an additive manufacturing technique to develop drug delivery vehicles that are biocompatible tissue-specific hydrogels or implantable devices. 3D bioprinting uses printed cells and biological molecules to manufacture tissues, organs, or biological materials in a scaffold-free manner that mimics living human tissue to provide localized and tissue-specific drug delivery, allowing for targeted disease treatments with scalable and complex geometry. This technique was developed in the 1950s as patients with incurable diseases demanded higher organ transplantation needs than available donors and organ transplantations showed limitations with immune responses and organ rejection
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https://huggingface.co/datasets/fmars/wiki_stem
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A Cartesian coordinate robot (also called linear robot) is an industrial robot whose three principal axes of control are linear (i. e. they move in a straight line rather than rotate) and are at right angles to each other
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https://huggingface.co/datasets/fmars/wiki_stem
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Cold spray additive manufacturing (CSAM) (also called cold spray 3D printing) is a particular application of cold spraying, able to fabricate freestanding parts or to build features on existing components. During the process, fine powder particles are accelerated in a high-velocity compressed gas stream, and upon the impact on a substrate or backing plate, deform and bond together creating a layer. Moving the nozzle over a substrate repeatedly, a deposit is building up layer-by-layer, to form a part or component
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https://huggingface.co/datasets/fmars/wiki_stem
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Construction 3D Printing (c3Dp) or 3D construction Printing (3DCP) refers to various technologies that use 3D printing as a core method to fabricate buildings or construction components. Alternative terms for this process include "additive construction. " "3D Concrete" refers to concrete extrusion technologies whereas Autonomous Robotic Construction System (ARCS), large-scale additive manufacturing (LSAM), or freeform construction (FC) refer to other sub-groups
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https://huggingface.co/datasets/fmars/wiki_stem
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CoreXY is a technique used to move the printhead of a 3D printer or the toolhead in CNC machines in the horizontal plane. The advantage of this technique is that the two motors used to perform the movement in the horizontal plane are stationary and do not have to move themselves, which can result in less moving mass. Instead, drive belts are used which are connected in an intricate way to provide movement in a Cartesian coordinate system
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https://huggingface.co/datasets/fmars/wiki_stem
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Design for additive manufacturing (DfAM or DFAM) is design for manufacturability as applied to additive manufacturing (AM). It is a general type of design methods or tools whereby functional performance and/or other key product life-cycle considerations such as manufacturability, reliability, and cost can be optimized subjected to the capabilities of additive manufacturing technologies. This concept emerges due to the enormous design freedom provided by AM technologies
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https://huggingface.co/datasets/fmars/wiki_stem
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In design for additive manufacturing (DFAM), there are both broad themes (which apply to many additive manufacturing processes) and optimizations specific to a particular AM process. Described here is DFM analysis for stereolithography, in which design for manufacturability (DFM) considerations are applied in designing a part (or assembly) to be manufactured by the stereolithography (SLA) process. In SLA, parts are built from a photocurable liquid resin that cures when exposed to a laser beam that scans across the surface of the resin (photopolymerization)
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https://huggingface.co/datasets/fmars/wiki_stem
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Digital modeling and fabrication is a design and production process that combines 3D modeling or computing-aided design (CAD) with additive and subtractive manufacturing. Additive manufacturing is also known as 3D printing, while subtractive manufacturing may also be referred to as machining, and many other technologies can be exploited to physically produce the designed objects.
Modeling
Digitally fabricated objects are created with a variety of CAD software packages, using both 2D vector drawing, and 3D modeling
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https://huggingface.co/datasets/fmars/wiki_stem
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Distributed manufacturing also known as distributed production, cloud producing, distributed digital manufacturing, and local manufacturing is a form of decentralized manufacturing practiced by enterprises using a network of geographically dispersed manufacturing facilities that are coordinated using information technology. It can also refer to local manufacture via the historic cottage industry model, or manufacturing that takes place in the homes of consumers.
Enterprise
In enterprise environments, the primary attribute of distributed manufacturing is the ability to create value at geographically dispersed locations
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https://huggingface.co/datasets/fmars/wiki_stem
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Do Space is a 501(c)(3) non-profit community center for technology, digital library, education, and small makerspace featuring 3D printing technology in Omaha, Nebraska.
History
Do Space opened in the fall of 2015. Do Space is managed by the non-profit Community Information Trust, which itself is managed by local Omaha philanthropic organization, Heritage Services
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https://huggingface.co/datasets/fmars/wiki_stem
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Fab@Home is a multi-material 3D printer, launched in 2006. It was one of the first two open-source DIY 3D printers in the world, at a time when all other additive manufacturing machines were still proprietary. The Fab@Home and the RepRap are credited with sparking the consumer 3D Printing revolution
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https://huggingface.co/datasets/fmars/wiki_stem
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A fab lab (fabrication laboratory) is a small-scale workshop offering (personal) digital fabrication. A fab lab is typically equipped with an array of flexible computer-controlled tools that cover several different length scales and various materials, with the aim to make "almost anything". This includes technology-enabled products generally perceived as limited to mass production
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https://huggingface.co/datasets/fmars/wiki_stem
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Fused filament fabrication (FFF), also known as fused deposition modeling (with the trademarked acronym FDM), or filament freeform fabrication, is a 3D printing process that uses a continuous filament of a thermoplastic material. Filament is fed from a large spool through a moving, heated printer extruder head, and is deposited on the growing work. The print head is moved under computer control to define the printed shape
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https://huggingface.co/datasets/fmars/wiki_stem
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Research on the health and safety hazards of 3D printing is new and in development due to the recent proliferation of 3D printing devices. In 2017, the European Agency for Safety and Health at Work has published a discussion paper on the processes and materials involved in 3D printing, potential implications of this technology for occupational safety and health and avenues for controlling potential hazards.
Hazards
Emissions
Emissions from fused filament printers can include a large number of ultrafine particles and volatile organic compounds (VOCs)
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https://huggingface.co/datasets/fmars/wiki_stem
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Marlin is open source firmware originally designed for RepRap project FDM (fused deposition modeling) 3D printers using the Arduino platform. Once the firmware has been compiled from C++ source code; it is installed and runs on a mainboard with onboard components and general-purpose I/O pins to control and communicate with other components. For control the firmware receives input from a USB port or attached media in the form of G-code commands instructing the machine what to do
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https://huggingface.co/datasets/fmars/wiki_stem
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Material extrusion-based additive manufacturing (EAM) represents one of the seven categories of 3d printing processes, defined by the ISO international standard 17296-2. While it is mostly used for plastics, under the name of FDM or FFF, it can also be used for metals and ceramics. In this AM process category, the feedstock materials are mixtures of a polymeric binder (from 40% to 60% by volume) and a fine grain solid powder of metal or ceramic materials
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https://huggingface.co/datasets/fmars/wiki_stem
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Microgravity bioprinting is the utilization of 3D bioprinting techniques under microgravity conditions to fabricate highly complex, functional tissue and organ structures. The zero gravity environment circumvents some of the current limitations of bioprinting on Earth including magnetic field disruption and biostructure retention during the printing process. Microgravity bioprinting is one of the initial steps to advancing in space exploration and colonization while furthering the possibilities of regenerative medicine
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https://huggingface.co/datasets/fmars/wiki_stem
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The use of microstructures in 3D printing, where the thickness of each strut scale of tens of microns ranges from 0. 2mm to 0. 5mm, has the capabilities necessary to change the physical properties of objects (metamaterials) such as: elasticity, resistance, and hardness
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https://huggingface.co/datasets/fmars/wiki_stem
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Multi-material 3D printing is the additive manufacturing procedure of using multiple materials at the same time to fabricate an object. Similar to single material additive manufacturing it can be realised through methods such as FFF, SLA and Inkjet (material jetting) 3D printing. By expanding the design space to different materials, it establishes the possibilities of creating 3D printed objects of different color or with different material properties like elasticity or solubility
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https://huggingface.co/datasets/fmars/wiki_stem
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Nanophotonic coherent imagers (NCI) are image sensors that determine both the appearance and distance of an imaged scene at each pixel. It uses an array of LIDARs (scanning laser beams) to gather this information about size and distance, using an optical concept called coherence (wherein waves of the same frequency align perfectly. )NCIs can capture 3D images of objects with sufficient accuracy to permit the creation of high resolution replicas using 3D printing technology
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https://huggingface.co/datasets/fmars/wiki_stem
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