What's the difference between diffusion and effusion?

Diffusion


Definition:

  • (n.) The act of diffusing, or the state of being diffused; a spreading; extension; dissemination; circulation; dispersion.
  • (n.) The act of passing by osmosis through animal membranes, as in the distribution of poisons, gases, etc., through the body. Unlike absorption, diffusion may go on after death, that is, after the blood ceases to circulate.

Example Sentences:

  • (1) The Na+ ionophore, gramicidin, had a small but significant inhibitory effect on Na(+)-dependent KG uptake, demonstrating that KG uptake was not the result of an intravesicular positive Na+ diffusion potential.
  • (2) The femoral component, made of Tivanium with titanium mesh attached to it by a new process called diffusion bonding, retains superalloy fatigue strength characteristics.
  • (3) The diffusion of Myocamicin in the prostatic tissue of patients undergoing prostatectomy after a single oral dose of 600 mg has been studied.
  • (4) The preembedding method also disclosed diffuse cytosolic immunoreactivity.
  • (5) The clinical aspects, the modality of onset and diffusion of the lymphoma, its macroscopic and histopathological features and the different therapeutic approaches are discussed.
  • (6) The kidney disease was characterized by diffuse beaded deposition of rat gammaglobulin along the glomerular capillaries and proteinuria.
  • (7) We identified four distinct clinical patterns in the 244 patients with true positive MAI infections: (a) pulmonary nodules ("tuberculomas") indistinguishable from pulmonary neoplasms (78 patients); (b) chronic bronchitis or bronchiectasis with sputum repeatedly positive for MAI or granulomas on biopsy (58 patients, virtually all older white women); (c) cavitary lung disease and scattered pulmonary nodules mimicking M. tuberculosis infection (12 patients); (d) diffuse pulmonary infiltrations in immunocompromised hosts, primarily patients with AIDS (96 patients).
  • (8) Sera from three of these patients gave a precipitin band in gel diffusion tests identical to that produced by a monospecific rabbit anti-E. granulosus antigen 5 serum, when tested against whole hydatid fluid.
  • (9) A constellation of histologic lesions was identified in brain (diffuse meningoencephalitis with bilaterally symmetrical thalamic necrosis), liver (pericholangiohepatitis), lung (pneumonitis), and spleen (lymphoid hyperplasia); this tetrad is apparently unique to this model system.
  • (10) Diffuse Ga-67 uptake in the kidneys was seen due to renal involvement with this disorder.
  • (11) Thus, whereas CD3-associated molecules isolated from polyclonal CD3+WT31+ populations (expanded in IL 2 under the same culture conditions) appeared as diffuse bands, CD3-associated molecules isolated from CD3+WT31- populations displayed a homogeneous molecular mass.
  • (12) The diffuse reaction product seen in basement membranes of ganglion and nerve may also be artifact.
  • (13) Here we determine the position of bound ADP diffused into the recA crystal.
  • (14) In contrast, boundary layer diffusion is operative in the release from the matrixes prepared by compression of physical mixtures.
  • (15) Medium molecules have been detected by two methods, gel filtration and screening technique, in patients with diffuse purulent peritonitis and with chronic renal insufficiency.
  • (16) This may be because the epithelium restricts diffusion of the drug or due to the production of a non-prostanoid factor which inhibits smooth muscle responsiveness.
  • (17) Ten of 11 diffuse poorly differentiated lymphocytic lymphomas were composed of cells with large amounts of surface immunoglobulin, whereas only 1 of 5 diffuse well differentiated lymphocytic tumors contained such abundant surface immunoglobulin.
  • (18) Thirty-six lesions imaged as vascular malformations with abnormal vessels or diffusely increased activity.
  • (19) We therefore conclude that the protective effect displayed by solid grafts might be a local process dependent on the release of diffusible trophic agents.
  • (20) These results demonstrate, in living human hearts, that diffuse coronary atherosclerosis is often present when coronary angiography reveals only discrete stenoses.

Effusion


Definition:

  • (n.) The act of pouring out; as, effusion of water, of blood, of grace, of words, and the like.
  • (n.) That which is poured out, literally or figuratively.
  • (n.) The escape of a fluid out of its natural vessel, either by rupture of the vessel, or by exudation through its walls. It may pass into the substance of an organ, or issue upon a free surface.
  • (n.) The liquid escaping or exuded.

Example Sentences:

  • (1) BT Sport's marketing manager, Alfredo Garicoche, is more effusive still: "We're not thinking for the next two or three years, we're thinking for the next 20 or 30 years and even longer.
  • (2) The authors describe a case of expulsive choroidal effusion which occurred in the course of a fistulating operation in a child with Sturge-Weber syndrome.
  • (3) In all patients a Tenckoff's catheter for peritoneal dialysis was introduced and peritoneal effusion extracted and measured.
  • (4) Recurrent respiratory infections occurred in 17 (38%), and chronic recurrent middle ear effusions were noted in 33 (73%).
  • (5) On the seventh day, when middle ear effusions were absent, the ciliary activity had recovered to normal.
  • (6) Emergency CT showed evidence of pericardial effusion suggesting hemopericardium, enlargement of the ascending aorta and a peripheral semilunar filling defect which caused a slight deformation of the true channel.
  • (7) Subsequently, the inflammatory reaction diminishes, as can be seen on smears from tympanic effusions.
  • (8) We report a case of tamponade due to an effusion of blood which had occurred two weeks after an aorto-coronary bypass and was unusually located behind the left atrium.
  • (9) Control fluids of posttraumatic effusions were negative; among the other controls synovial fluid from 1 psoriatic arthritis patient reacted positively.
  • (10) In severely affected children who have chronic otitis media with effusion resistant to medical therapy, adenoidectomy is an effective treatment.
  • (11) The syndrome of ovarian hyperstimulation is an exceptional aetiology of pleural effusion.
  • (12) Eleven effusions met one or more of three criteria commonly used to identify exudative effusions.
  • (13) Bacteria present in effusions were identified, and their ability to produce beta-lactamase was also determined.
  • (14) Her chest roentgenogram showed a moderate amount of pleural effusion in the left pleural cavity without infiltration in the lung fields and no evidence of swollen hilar or mediastinal lymphnodes.
  • (15) In the case of a massive serous pleural effusion examination of the ingredients leads to diagnosis.
  • (16) Similarly, the estimation of individual normal serum proteins in effusion fluids is unlikely to be of diagnostic value.
  • (17) However, separation of the capsule from the bony glenoid can be detected if a joint effusion is present to adequately distend the joint.
  • (18) A retrospective study was made with the purpose of testing Ultrasound usefulness in differential diagnosis between empyematous and non empyematous evolution of parapneumonic effusions.
  • (19) Seventy-nine children have been followed with persistent middle ear effusion (MEE).
  • (20) On the basis of this experience, further investigation of the intrapericardial administration of cisplatin as treatment to control malignant pericardial effusions appears warranted.