(a.) Pertaining to, derived from, or containing, osmium; specifically, designating those compounds in which it has a valence higher than in other lower compounds; as, osmic oxide.
Example Sentences:
(1) The results suggest that the conversion of the HRP-TMB reaction product to an electron-dense form during osmication is intimately associated with the pH of the phosphate buffer and the total time of osmication.
(2) In agreement with previous findings osmicated cat 'C'-terminals failed to reveal synaptic complexes in regions possessing the subsynaptic cistern ('cisternal regions').
(3) The epitopes recognized by these mAbs were adversely affected by these fixatives; therefore, pre-embedding immunogold staining was employed, prior to fixation, osmication, dehydration and embedding.
(4) Aldehyde-fixed tissues are cut into sections with an automatic sectioner, incubated cytochemically osmication if required, then embedded in epoxy resin between fluorocarbon coverglasses which are supported by a platform specially designed for this purpose.
(5) The only complaint from the patient, months after the osmic acid injection, was a strong metallic taste on the tongue.
(6) They were studied with the prolonged osmication technique.
(7) With the polygalacturonase--gold complex, differences in the labelling distribution were noted according to the fixation procedure indicating, therefore, that osmication of the tissues could greatly interfere with the localization of the specific enzyme binding sites.
(8) We speculate that either oxidative polymerization of DAPA or Schiff's base formation with protein after aldehyde formation is responsible for the latter reaction, which is made permanent for ultracytochemical localization by osmication at a later step.
(9) This model has been tested by tracing the profiles of vesicles within the PTA network and comparing their size and shape frequency distributions with those of osmicated synaptic vesicles.
(10) The lingual gingival and the alveolar mucosa of mandible of the house musk shrew (Suncus murinus) were stained by methylene blue vital staining or osmic acid staining, and mounted as whole thickness preparations.
(11) Various methods of dissection, fixation, osmication, sectioning and staining were tested in order to develop an acceptable technique for preparing 9, 10, 11, and 12-day-old rat otocysts for electron microscopic study.
(12) Eleven patients had never received osmic acid injections in this particular joint, whereas 18 had had such injections 1-24 months prior to surgery.
(13) The inferior medullary velum and tela choroidea were removed intact from the fourth ventricle, post-osmicated, dehydrated, critical point dried, coated with palladium-gold and examined in a Cambridge Stereoscan S4 scanning electron microscope.
(14) Thin 100-nm sections were then cut and stained from the osmicated blocks for ultrastructural studies.
(15) A category of large boutons forming synapses with the soma and proximal dendrites of spinal motoneurons was studied in glutaraldehyde-fixed, non-osmicated tissue stained with uranyl acetate and lead citrate.
(16) The "sebum" secretion was evaluated in caucasian, black, yellow and mullato people of different ages by the osmic acid technique utilizing a semi-quantitative scale of score ranging from 0 to 9 points.
(17) After 18 hours of growth on selective serum-agar medium C diphtheriae cultures with different toxicogenic activity, and also diphtheroid and Hoffmann's baccillus cultures were removed, washed of the remnants of the nutrient medium and fixed under cold conditions by two combined methods (with glutaric aldehyde-osmic acid--uranyl acetate, and potassium permeanganate--uranyl acetate).
(18) The organization of the granule is somewhat altered when osmication is omitted from the fixation procedure.
(19) Sequential treatments of osmicated specimens with tannic acid pH 7.0-9.0, and uranyl acetate, pH 4.1, enhanced the density of the elastin intensely, increased collagen staining moderately, but hardly increased the density of nuclei and microfibrils.
(20) The reaction product even at this stage prior to osmication is highly visible.
Valence
Definition:
(n.) The degree of combining power of an atom (or radical) as shown by the number of atoms of hydrogen (or of other monads, as chlorine, sodium, etc.) with which it will combine, or for which it can be substituted, or with which it can be compared; thus, an atom of hydrogen is a monad, and has a valence of one; the atoms of oxygen, nitrogen, and carbon are respectively dyads, triads, and tetrads, and have a valence respectively of two, three, and four.
Example Sentences:
(1) The mixed-valence-state cytochrome oxidase mixed with O2 at -24 degrees C and flash-photolysed at -60 to -100 degrees C reacts with O2 and initially forms an oxy compound (A2) similar to that formed from the fully reduced state (A1).
(2) Additional results, together with simulations based on a simple kinetic model, suggest that the reduced apparent valence of the low slope component of the Q-V curve results from gating charge immobilization occurring at holding potential.
(3) A related explanation is that the 609 nm absorbance involves a charge-transfer interaction of both iron and copper as a mixed-valence binuclear complex, Cua3, having properties of a non-blue copper.
(4) RBDs were significantly more impaired than LBDs or NCs on category and valence accuracy, while LBDs posed expressions with significantly more intensity than RBDs or NCs.
(5) The extent of adsorption was affected by the concentration and valency of cations, indicating a charge-dependent process.
(6) Use of that principle was demonstrated by fourth grade children who judged that telling the truth, as opposed to lying, was shown by a consistency between the affective valence of the verbal and the nonverbal communications.
(7) Research reported here shows that primary and transferred releasing valences are differentially affected by environmental variables.
(8) Furthermore, the valences of all ions in solution on both sides of the membrane are taken to be of equal absolute magnitude.
(9) Possible valence bond structures for 3-methylpurine residues in DNA are discussed, leading to the suggestion that ionized forms with positively charged amino groups may be the most effective blocks to template activity.
(10) A confirmatory factor analysis on these subscales showed that the Affective Valence, Empathic Caring, Self-Sacrifice, and Societies' Duties subscales each reflect a humanitarian concern for children and that the Instrumentality and Authoritarian Attitude subscales tap values involving a moralistic expectation of children.
(11) The excitatory potential, the involvement potential, and the hedonic valence of the nonerotic and erotic stimuli were also assessed.
(12) A monovalent form of concanavalin A (m-Con A) has been prepared to determine the importance of valence for human lymphocyte surface binding and subsequent lymphocyte stimulation as measured by blast transformation and cytotoxicity.
(13) As concerns the valence of the natural focus, the most important was the inundated forest in the Drnholec locality.
(14) Examination of the antigen dose-response curves and maximal responses obtained suggests that valency of the antigen may be important both in determining the avidity of interaction between the pCTL and the antigen-bearing structure, and in determining the extent to which localized receptor cross-linking occurs on the cell surface to result in triggering.
(15) Therefore, no conclusions about biological valence and tumour localisation could be drawn from the aspect of the cell picture which we observed and from the degree of pleocytosis.
(16) During presentation of pictures with negative valence the m. frontalis lateralis and the m. corrugator supercilii revealed enhanced EMG-reactions as compared to the repeated presentation of pictures with positive valence.
(17) The degree and the character of these changes depend on cation valency and the initial value of cell EM.
(18) Maximum adsorption at 23 degrees C occurred within 2 h. The amounts of DNA which adsorbed to sand increased with the salt concentration (0.1 to 4 M NaCl and 1 mM to 0.2 M MgCl2), salt valency (Na+ less than Mg2+ and Ca2+), and pH (5 to 9).
(19) The influence of valence and heavy chain on antibody activity was investigated using transfectoma-derived, class-switched IgG1 and IgM human monoclonal antibodies (MAbs) reactive with the bacterial pathogens Escherichia coli K1 and group B Streptococcus species.
(20) The obtained data allows to suggest that one of the possible mechanisms of 6-ONDA neurotoxic action includes the generation of superoxide, whose dismutation to hydrogen peroxide in the presence of transient valency ions gives rise to HO.