(n.) The act of fixing, or the state of being fixed.
(n.) The act of uniting chemically with a solid substance or in a solid form; reduction to a non-volatile condition; -- said of gaseous elements.
(n.) The act or process of ceasing to be fluid and becoming firm.
(n.) A state of resistance to evaporation or volatilization by heat; -- said of metals.
Example Sentences:
(1) These results are discussed in relation to the possible existence of enzyme-bound intermediates of nitrogen fixation.
(2) The way how to apply this fixator is described in details.
(3) Good fixation was obtained in 4 cases using Steffee's devices.
(4) Eighty-eight patients (97%) had a stable fixation and 77 (85%) had resumed preoperative activity or were working but with a residual deficit.
(5) Internal fixation of these pathological fractures appeared to be the best treatment.
(6) In open fractures especially in those with severe soft tissue damage, fracture stabilisation is best achieved by using external fixators.
(7) To selectively stain polyanionic macromolecules of growth plate cartilage and to prevent artifacts induced by aqueous fixation, proximal tibial growth plates were excised from rats, slam-frozen, and freeze-substituted in 100% methanol containing the cationic dye Alcian blue.
(8) The fracture can be treated arthroscopically by rigid internal fixation, while at the same time treating possible associated lesions.
(9) Total excision and immediate reconstruction were done with alloplastic material fixated with microplates and screws.
(10) These antibodies are usually characterized by the conventional platelet complement fixation test.
(11) Viruses isolated from ticks (Ixodes uriae) from a seabird colony on the Isle of May, Scotland, were shown by complement fixation tests to be related to the Uukuniemi and Kemerovo serogroups.
(12) Since 1984, 16 children (mean age 10.3 years) have had stabilization of their femoral shaft fractures by external fixation (Monofixateur) in the Trauma Department of the Hannover Medical School.
(13) Studies were undertaken to improve the production of histoplasmin for use in complement-fixation tests and in the determination of H and M antibodies.
(14) Effects of fixation with glutaraldehyde (GA), glutaraldehyde-osmium tetroxide (GA-OsO(4)), and osmium tetroxide (OsO(4)) on ion and ATP content, cell volume, vital dye staining, and stability to mechanical and thermal stress were studied in Ehrlich ascites tumor cells (EATC).
(15) Serology represents the primary method, using the techniques of complement fixation, indirect immunofluorescence, and enzyme-linked immunosorbent assay (ELISA).
(16) We found that the Gallie system generally allowed significantly more rotation in flexion, extension, axial rotation, and lateral bending than the other three fixation techniques.
(17) Good correlation was obtained with results of complement fixation tests, whereas double diffusion in gel was less sensitive.
(18) At 4 degrees C or after fixation, anti-renal tubular brush border vesicle (BBV) IgG bound diffusely to the surface of GEC and to coated pits.
(19) Eight patients with infected nonunions had initial debridement procedures; three of these patients then had placement of external fixators and bone grafting.
(20) In difficult fractures we feel that change from external to internal fixation should be performed earlier; it makes early removal of the fixator pins possible and prevents the problems associated with prolonged use of fixator frames.
Pyrenoid
Definition:
(n.) A transparent body found in the chromatophores of certain Infusoria.
Example Sentences:
(1) Immunoelectron microscopy shows that ubiquitin is located in the chloroplast, nucleus, cytoplasm, pyrenoid and on the plasma membrane.
(2) Where dilute the Fe-propionocarmine enhances nuclear staining without staining orthe organelles; where more concentration it also stains the nucleolus, spindle, spindle polar bodies, pyrenoid and protoplast.
(3) Similar results were obtained after chronic exposure to 4.9 x 10(-4) microM copper with the relative volume of the pyrenoid being 28% smaller than the controls.
(4) The presence of ribose-5-phosphate isomerase and ribulose-5-phosphate kinase activities was also noted in pyrenoid preparations.
(5) TMF-II consists mostly of thylakoid membranes still partially organized in grana; it contains also fragments of chloroplast envelope, pyrenoid tubules, and starch granules; thus it amounts to a fraction of chloroplast fragments which have lost practically all matrix components.
(6) The pyrenoid, when present, protrudes from the chloroplast, is also surrounded by the two chloroplast envelopes, and, in addition, is capped by a third dilated envelope or "pyrenoid sac."
(7) Both pyrenoids and fraction I protein are localized in the chloroplast, and both have two principal protein components.
(8) The English symbionts had a pyrenoid, compact chloroplast membranes and vesiculated polyphosphate bodies.
(9) Cells grown phototrophically without acetate possess more chloroplast ribosomes and have more normal membrane and pyrenoid organization.
(10) Cells grown mixotrophically in the presence of acetate have a highly disordered chloroplast membrane organization and usually lack pyrenoids.
(11) Statistical analysis of radioautographic grain distribution and measurements of different structural parameters indicate that (a) the chloroplast volume and surface remain constant during the process, whereas the growth of the photosynthetic lamellae parallels the increase in chlorophyll; (b) the lamellae do not develop from the chloroplast envelope or from the tubular system of the pyrenoid; (c) all the lamellae grow by incorporation of new material within preexisting structures; (d) different types of lamellae grow at different rates.
(12) For isolation of the nucleomorph, cells were slightly fixed with glutardialdehyde and thereafter, lysed by treatment with proteinase K and Triton X-100, leaving an intact nucleomorph-pyrenoid complex.
(13) The pyrenoid was found to contain a high specific activity of ribulose-1,5-diphosphate carboxylase which is the same enzymatic activity exhibited by fraction I protein.
(14) It is suggested that the pyrenoid contains fraction I protein and possibly other enzymes of the Calvin-Bassham carbon dioxide fixing pathway.
(15) Cytokinesis is accomplished by an annular median constriction causing the gradual separation of the chloroplast, pyrenoid, and other cell organelles, resulting in two equal daughter cells.
(16) In contrast, the relative volume of their pyrenoids decreased by 41.46%.
(17) Mixotrophic ac-20 cells are also characterized by low rates of photosynthetic electron transport, disorganized chloroplast membranes, and a small pyrenoid.
(18) The molecular weights and relative ratio of the two pyrenoid components are very similar to those of the two components of fraction I protein.
(19) In addition, the pyrenoid in synchronized cells has a transient existence, being present only in the first half of the light period.
(20) The ultraviolet absorption spectrum of sodium dodecyl sulfate (SDS) extracts of pyrenoids showed a single peak at a wavelength of 277 nm, indicating the presence of protein and the probable absence of nucleic acid.