Furman remains vulnerable yet indomitable throughout, indulging an appetite for life that respects both its sanctity and its friability.
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Friability and abrasion testing is performed in rotating testing drums, designed according to the pharmacopeia. The measured parameter is weight loss before and after testing and tumbling the tablets at a particular time and speed. In the friability test drum tablets are being carried up by a "shovel" and dropped. Tablets are also not allowed to fall apart during the test.
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Soil friability is the tendency of a mass of soil to crumble under the action of an applied force. This has been found to be maximum at the PL of a soil.
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This texture relates to the friability of the soil which can come from earthworms and other organisms that have burrowed tunnels throughout the soil. Much like rocks, these tunnels give water a freer passageway through soil and contributes to its drainage.
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SCAD is diagnosed via colonoscopy, often incidentally during examination for unrelated concerns. Colonoscopy shows erythema of the colonic mucosa, which may be characterized by friability and exudate. The descending and sigmoid colon are typically involved. Biopsies of the affected area and the unaffected rectum confirm the diagnosis.
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Both arms were spread outwards from the torso. The lower legs and surface of the neck showed signs of fire damage. The soft tissues of the right arm, torso and upper legs were consumed. The majority of bones of these parts retained their integrity, although friability was increased.
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Endoscopic findings in ulcerative colitis include: erythema (redness of the mucosa), friability of the mucosa, superficial ulceration, and loss of the vascular appearance of the colon. When present, ulcerations may be confluent. Pseudopolyps may be observed. Ulcerative colitis is usually continuous from the rectum, with the rectum almost universally being involved.
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Because of the uneven surface and possible air holes throughout shelf ice, the ice may give way unexpectedly. One can plummet several feet through an air pocket into open water. Self rescue is difficult due to the friability of the ice and the rate at which the cold water will sap energy.
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Generally speaking the rocks become younger from north west to south east. The north western band is composed of early to mid- Ordovician sedimentary rocks, largely mudstones and siltstones of marine origin. Together they comprise the Skiddaw Group and include the rocks traditionally known as the Skiddaw Slates. Their friability generally leads to mountains with relatively smooth slopes such as Skiddaw itself.
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In dissection, the inner coat (tunica intima) can be separated from the middle (tunica media) by a little maceration, or it may be stripped off in small pieces; but, because of its friability, it cannot be separated as a complete membrane. It is a fine, transparent, colorless structure which is highly elastic, and, after death, is commonly corrugated into longitudinal wrinkles.
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The loss of blood and/or dehydration resulting from the frequent stools will frequently result in nausea. Extreme cramping and pain can occur with pouchitis. Endoscopy in patients with pouchitis usually reveals erythematous pouch mucosa, loss of pseudocolonic vasculature or other architecture, and friability of the mucosa. Biopsies show evidence of inflammatory cells or red blood cells in the lamina propria.
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However, such substances are not generally considered friable because of the degree of difficulty involved in breaking the substance's chemical bonds through mechanical means. Some substances, such as polyurethane foams, show an increase in friability with exposure to ultraviolet radiation, such as sunlight. Friable is sometimes used metaphorically to describe "brittle" personalities who can be "rubbed" by seemingly-minor stimuli to produce extreme emotional responses.
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Friability testing is a laboratory technique used by the pharmaceutical industry to test the durability of tablets during transit. This testing involves repeatedly dropping a sample of tablets over a fixed time, using a rotating wheel with a baffle. The result is inspected for broken tablets, and the percentage of tablet mass lost through chipping. A typical specification will allow a non- zero percentage of chipping, and zero broken tablets.
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The physical properties of a tablet are tested either by manual or automated sampling and IPC testing (in-process control). Tablet "hardness", also called "breaking force", is tested to assure that the tablet's strength will survive all further processes, such as dedusting, coating and packaging. The hardness value of a tablet gives an early indication of the tablet's disintegration time. Further measured parameters are weight, thickness, diameter, disintegration time, friability, and abrasion.
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An uncoated HRSI tile held in the hand feels like a very light foam, less dense than styrofoam, and the delicate, friable material must be handled with extreme care to prevent damage. The coating feels like a thin, hard shell and encapsulates the white insulating ceramic to resolve its friability, except on the uncoated side. Even a coated tile feels very light, lighter than a same-sized block of styrofoam. As expected for silica, they are odorless and inert.
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Tablet hardness testing, is a laboratory technique used by the pharmaceutical industry to determine the breaking point and structural integrity of a tablet and find out how it changes "under conditions of storage, transportation, packaging and handling before usage" The breaking point of a tablet is based on its shape. It is similar to friability testing, but they are not the same thing. Tablet hardness testers first appeared in the 1930s. In the 1950s, the Strong-Cobb tester was introduced.
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Flat spots also can lead to excessive heat generation with the added surface contact which in turn enables bond fracture, or the brittle fracture of the adhesive bonds between the grains. The removal of these worn grains from the adhesive bonds restores the wheel’s cutting ability once more. Grinding wheels can also be characterized by the grains’ increased capacity to fracture according to a level of higher value of friability. Different bonding materials are used depending on the intended use of the grinding wheel.
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Pressing extremely firmly will cause a catastrophic breakdown in the sparse structure, causing it to shatter like glass (a property known as friability), although more modern variations do not suffer from this. Despite the fact that it is prone to shattering, it is very strong structurally. Its impressive load- bearing abilities are due to the dendritic microstructure, in which spherical particles of average size 2–5 nm are fused together into clusters. These clusters form a three-dimensional highly porous structure of almost fractal chains, with pores just under 100 nm.
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There are seven requirements for cores: #Green strength: In the green condition, there must be adequate strength for handling #In the hardened state, it must be strong enough to handle the forces of casting; therefore, the compression strength should be 100 to 300 psi (0.69 to 2.07 MPa). #Permeability must be very high to allow for the escape of gases. #Friability: As the casting or molding cools, the core must be weak enough to break down as the material shrinks. Moreover, they must be easy to remove during shakeout.
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Friability ( ), the condition of being friable, describes the tendency of a solid substance to break into smaller pieces under duress or contact, especially by rubbing. The opposite of friable is indurate. Substances that are designated hazardous, such as asbestos or crystalline silica, are often said to be friable if small particles are easily dislodged and become airborne, and hence respirable (able to enter human lungs), thereby posing a health hazard. Tougher substances, such as concrete, may also be mechanically ground down and reduced to finely divided mineral dust.
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A honing stone is similar to a grinding wheel in many ways, but honing stones are usually more friable, so that they conform to the shape of the workpiece as they wear in. To counteract their friability, honing stones may be treated with wax or sulfur to improve life; wax is usually preferred for environmental reasons. Any abrasive material may be used to create a honing stone, but the most commonly used are corundum, silicon carbide, cubic boron nitride, and diamond. The choice of abrasive material is usually driven by the characteristics of the workpiece material.
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There are more than 25 basic tests, however only the important ones for the given casting process are used. The basic tests measure the following parameters: wet tensile strength, cone jolt, mouldability, friability, moisture content, permeability, green compression strength, compactibility, loss on ignition, volatiles content, grain size & distribution, dust (dead clay) content, and active clay content, impact strength . Each of these tests can lead you to obtain specific characteristics of sand which can be crucial to the quality of casting.Mold & Core Test Handbook, published by the American Foundry Society, Advanced testing tests for other parameters, such as splitting strength, shear strength, and high- temperature compression strength.
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Portal hypertensive gastropathy refers to changes in the mucosa of the stomach in patients with portal hypertension; by far the most common cause of this is cirrhosis of the liver. These changes in the mucosa include friability of the mucosa and the presence of ectatic blood vessels at the surface. Patients with portal hypertensive gastropathy may experience bleeding from the stomach, which may uncommonly manifest itself in vomiting blood or melena; however, portal hypertension may cause several other more common sources of upper gastrointestinal bleeding, such as esophageal varices and gastric varices. On endoscopic evaluation of the stomach, this condition shows a characteristic mosaic or "snake-skin" appearance to the mucosa of the stomach.
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The use of nasogastric intubation is contraindicated in patients with moderate-to-severe neck and facial fractures due to the increased risk of airway obstruction or improper tube placement. Special attention is necessary during insertion under these circumstances in order to avoid undue trauma to the esophagus. There is also a greater risk to patients suffering from bleeding disorders, particularly those resulting from the distended sub-mucosal veins in the lower third of the esophagus known as esophageal varices which may be easily ruptured due to their friability and also in GERD. Alternative measures, such as an orogastric intubation, should be considered under these circumstances, or if the patient will be incapable of meeting their nutritional and caloric needs for an extended time period (usually >24 hours).
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A chyle fistula occurs when defect(s) of lymphatic vessel(s) result in leakage of lymphatic fluid, typically accumulating in the thoracic (pleural) or abdominal (peritoneal) cavities,Tessier, Deron J, MD, Chyle fistula eMedicine; Jan 10, 2008; accessed Feb 2008 leading to a chylous pleural effusion (chylothorax) or chylous ascites, respectively. Diagnosis of a chyle fistula may be accomplished by analysis of pleural/peritoneal fluid. Identifying the source (localizing the lymphatic defect) is often challenging, but may be accomplished with lymphangiography, which is occasionally associated with a serendipitous therapeutic effect (resolution of the leak), thought to be secondary to a sclerosant effect of the lymphangiography contrast. Due to the extreme friability of the lymphatic vessels, direct repair of defects is impractical.
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4th Phase - The rectangular pillars of 11m by 3m are cut in half by a new gallery, leaving remnant pillars (final) with the dimension of 3m by 3m. 5th Phase – The 3m by 3m pillars are unstable in the long term, but they allow for a 6-month period in which it is possible to work safely in the last phase of stoping, that is the extraction (cleaning) with small excavators of the finer material that accumulated on the floor (threshold) and has an appreciable amount of tungsten due to the friability of wolframite. The 5th Phase is monitored with visual evaluation of the pillars and measuring of convergence roof-ground to verify the safety conditions within the stope. When the cleaning work is complete, the stope is abandoned and access is prohibited.
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