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SrS
SRS or SrS may stand for: Organizations and companies Companies *Sperry Rail Service, a rail inspection contractor *Stanford Research Systems, a test and measurement instruments manufacturer * SRS Cinemas, in India * SRS Labs, an American audio technology engineering company Academic organizations * Sea Ranger Service, a social enterprise managing ocean areas * Sea Research Society, for diving and underwater archaeology * Scoliosis Research Society * Society for Renaissance Studies, a UK-based academic society * Surveillance and Response Support, a unit of the European Centre for Disease Prevention and Control * Suffolk Records Society, in the UK Political parties * Serbian Radical Party (''Srpska radikalna stranka''), a political party in Serbia * Special Repair Service, a British construction organization in World War II Other * Savez Radio-Amatera Srbije, a Serbian amateur radio organization * Socialist Revolutionary Party, or "Essers", from the late Imperial and ...
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Strontium Sulfide
Strontium sulfide is the inorganic compound with the formula Sr S. It is a white solid. The compound is an intermediate in the conversion of strontium sulfate, the main strontium ore called celestite (or, more correctly, celestine), to other more useful compounds.J. Paul MacMillan, Jai Won Park, Rolf Gerstenberg, Heinz Wagner, Karl Köhler, Peter Wallbrecht “Strontium and Strontium Compounds” in Ullmann's Encyclopedia of Industrial Chemistry 2002, Wiley-VCH, Weinheim. . Production and reactions Strontium sulfide is produced by roasting celestine with coke at 1100–1300 °C. The sulfate is reduced, leaving the sulfide: :SrSO4 + 2 C → SrS + 2 CO2 About 300,000 tons are processed in this way annually. Both luminous and nonluminous sulfide phases are known, impurities, defects, and dopants being important.R. Ward, R. K. Osterheld, R. D. Rosenstein "Strontium Sulfide and Selenide Phosphors" Inorganic Syntheses, 1950, vol. III, pp. 11–24. As expected for a s ...
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Sperry Rail Service
Sperry Rail Service is a rail inspection company founded in 1928 by Elmer Ambrose Sperry. The company was the first in the world to offer nondestructive testing of railroad tracks. Since its formation, Sperry has been contracted by most of the major railroads in North America to inspect Rail tracks, rail. To accomplish this task, the company operates a fleet of rail service vehicles that travel along railroads to detect defects. While most prominent in North America, Sperry also operates in South America, Europe, Asia, Africa, and Australia. History Development of Defect Detection By the late 19th century, train derailments, some of which were blamed on transverse fissures, were increasing. One of them occurred in 1911, in Manchester, New York, killing 29 and seriously injuring 60. Another killed 21 and injured over 100 near Victoria, Mississippi, in October 1925. Dr. Elmer Sperry began developing a method of locating internal rail defects in 1911. To build a railway test c ...
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Spontaneous Raman Spectroscopy
Raman spectroscopy () (named after physicist C. V. Raman) is a spectroscopic technique typically used to determine vibrational modes of molecules, although rotational and other low-frequency modes of systems may also be observed. Raman spectroscopy is commonly used in chemistry to provide a structural fingerprint by which molecules can be identified. Raman spectroscopy relies upon inelastic scattering of photons, known as Raman scattering. A source of monochromatic light, usually from a laser in the visible, near infrared, or near ultraviolet range is used, although X-rays can also be used. The laser light interacts with molecular vibrations, phonons or other excitations in the system, resulting in the energy of the laser photons being shifted up or down. The shift in energy gives information about the vibrational modes in the system. Time-resolved spectroscopy and infrared spectroscopy typically yields similar yet complementary information. Typically, a sample is illuminated ...
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Stereotactic Radiosurgery
Stereotactic surgery is a minimally invasive form of surgery, surgical intervention that makes use of a three-dimensional coordinates, coordinate system to locate small targets inside the body and to perform on them some action such as ablation, biopsy, lesion, injection, Deep brain stimulation, stimulation, implantation, radiosurgery (SRS), etc. In theory, any organ system inside the body can be subjected to stereotactic surgery. However, difficulties in setting up a reliable frame of reference (such as bone landmarks, which bear a constant spatial relation to soft tissues) mean that its applications have been, traditionally and until recently, limited to neurosurgery, brain surgery. Besides the brain, biopsy and surgery of the breast are done routinely to locate, sample (biopsy), and remove tissue. Plain X-ray images (radiography, radiographic mammography), computed tomography, and magnetic resonance imaging can be used to Image-guided surgery, guide the procedure. Another acc ...
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Spontaneous Reporting System
Pharmacovigilance (PV, or PhV), also known as drug safety, is the pharmaceutical science relating to the "collection, detection, assessment, monitoring, and prevention" of adverse effects with pharmaceutical products. The etymological roots for the word "pharmacovigilance" are: (Greek for drug) and (Latin for to keep watch). As such, pharmacovigilance heavily focuses on adverse drug reactions (ADR), which are defined as any response to a drug which is noxious and unintended. That definition includes lack of efficacy: that means that the doses normally used for prevention, diagnosis, or treatment of a disease—or, especially in the case of device, for the modification of physiological disorder function. In 2010, the European Union expanded PV to include medication errors such as overdose, misuse, and abuse of a drug as well as drug exposure during pregnancy and breastfeeding. These are monitored even in the absence of an adverse event, because they may result in an adverse dr ...
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Snyder–Robinson Syndrome
Snyder–Robinson syndrome (SRS) is an extremely rare inherited genetic disorder characterized by muscular and skeletal abnormalities, varying degrees of intellectual disability, seizures, and slow development. SRS is caused by a mutated ''SMS'' gene at chromosome Xp21.3-p22.12, which carries instructions for producing the enzyme spermine synthase. Spermine synthase in turn helps the body produce spermine, a polyamine critical to cell processes such as cell division, tissue repair, and apoptosis. The resulting shortage of spermine in cells causes problems with development and brain function, though the exact mechanism is not understood. The syndrome has also been referred to as Snyder–Robinson X-linked mental retardation syndrome (MRXSSR) and spermine synthase deficiency. SRS exclusively affects males. Only about ten families currently have a child with SRS, and 50 people have been diagnosed worldwide since 1969. Presentation Snyder–Robinson usually is noticeable in infants, ...
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Somatostatin Receptor Scintigraphy
Somatostatin, also known as growth hormone-inhibiting hormone (GHIH) or by several other names, is a peptide hormone that regulates the endocrine system and affects neurotransmission and cell proliferation via interaction with G protein-coupled somatostatin receptors and inhibition of the release of numerous secondary hormones. Somatostatin inhibits insulin and glucagon secretion. Somatostatin has two active forms produced by the alternative cleavage of a single preproprotein: one consisting of 14 amino acids (shown in infobox to right), the other consisting of 28 amino acids. Among the vertebrates, there exist six different somatostatin genes that have been named: ''SS1'', ''SS2'', ''SS3'', ''SS4'', ''SS5'' and ''SS6''. Zebrafish have all six. The six different genes, along with the five different somatostatin receptors, allow somatostatin to possess a large range of functions. Humans have only one somatostatin gene, ''SST''. Nomenclature Synonyms of "somatostatin" include: ...
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Social Responsiveness Scale
The Social Responsiveness Scale, developed by John Constantino in 2002 and expanded upon by Constantino et al. in 2003, is a quantitative measure of autistic traits in 4–18 year olds. Its correlation with behaviour problems and autism spectrum disorder symptoms has been studied. It can be assessed with an 18 question survey filled out by the child's parents or teacher. The list of questions is subject to copyright. See also * Child Behavior Checklist The Child Behavior Checklist (CBCL) is a widely used caregiver report form identifying problem behavior in children.Achenbach, T.M., & Rescorla, L. A. (2001). ''Manual for the ASEBA School-Age Forms and Profiles.'' Burlington, VT: University of Ver ... References Autism screening and assessment tools {{med-stub ...
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Slow-reacting Substance Of Anaphylaxis
The slow-reacting substance of anaphylaxis or SRS-A is a mixture of the leukotrienes LTC4, LTD4 and LTE4. Mast cells secrete it during the anaphylactic reaction, inducing inflammation. It can be found in basophils. It induces prolonged, slow contraction of smooth muscle and has a major bronchoconstrictor role in asthma. Compared to histamine Histamine is an organic nitrogenous compound involved in local immune responses communication, as well as regulating physiological functions in the gut and acting as a neurotransmitter for the brain, spinal cord, and uterus. Discovered in 19 ..., it is approximately 1000 times more potent and has a slower onset but longer duration of action. References External links * Allergology {{Biochem-stub ...
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Slipping Rib Syndrome
Slipping rib syndrome (SRS) is a condition in which the Interchondral articulation, interchondral ligaments are weakened or disrupted and have increased laxity, causing the costal cartilage tips to Subluxation, subluxate (partially dislocate). This results in pain or discomfort due to pinched or irritated intercostal nerves, straining of the intercostal muscles, and inflammation. The condition affects the 8th, 9th, and 10th ribs, referred to as the false ribs, with the 10th rib most commonly affected. Slipping rib syndrome was first described by Edgar Ferdinand Cyriax in 1919; however, the condition is rarely recognized and frequently overlooked. A study estimated the prevalence of the condition to be 1% of clinical diagnoses in a general medicine clinic and 5% in a gastroenterology clinic, with a separate study finding it to be 3% in a mixed specialty Internal medicine, general medicine and gastroenterology clinic. The condition has also been referred to as Cyriax syndrome, cl ...
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Silver–Russell Syndrome
Silver–Russell syndrome, also called Silver–Russell dwarfism, is a rare congenital growth disorder. In the United States it is usually referred to as Russell–Silver syndrome, and Silver–Russell syndrome elsewhere. It is one of 200 types of dwarfism and one of five types of primordial dwarfism. Silver–Russell syndrome occurs in approximately one out of every 50,000 to 100,000 births. Males and females seem to be affected with equal frequency. Signs and symptoms Although confirmation of a specific genetic marker is in a significant number of individuals, there are no tests to clearly determine if this is what a person has. As a syndrome, a diagnosis is typically given for children upon confirmation of the presence of several symptoms listed below. Symptoms are intrauterine growth restriction (IUGR) combined with some of the following: * Often small for gestational age (SGA) at birth (birth weight less than 2.8 kg) * Feeding problems: the baby is uninterested in feed ...
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Sex Reassignment Surgery
Gender-affirming surgery (GAS) is a surgical procedure, or series of procedures, that alters a person's physical appearance and sexual characteristics to resemble those associated with their gender identity. The phrase is most often associated with transgender health care, though many such treatments are also pursued by cisgender individuals. It is also known as sex reassignment surgery (SRS), gender confirmation surgery (GCS), and several other names. Professional medical organizations have established Standards of Care, which apply before someone can apply for and receive reassignment surgery, including psychological evaluation, and a period of real-life experience living in the desired gender. Feminization surgeries are surgeries that result in female-looking anatomy, such as vaginoplasty, vulvoplasty and breast augmentation. Masculinization surgeries are those that result in male-looking anatomy, such as phalloplasty and breast reduction. In addition to gend ...
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