What's the difference between heptene and lubricant?
Heptene
Definition:
(n.) Same as Heptylene.
Example Sentences:
(1) Acetaldehyde and acetone were also detected in the irradiated squalene, which may be formed via a 6-methyl-5-hepten-2-one intermediate.
(2) When treated with the carbonyl reagent 2,4-dinitrophenylhydrazine, the reactive fractions yielded derivatives, some of which were identified by mass spectrometry as hydrazones of nonenal, heptenal, pentenal, and crotonaldehyde.
(3) L. leiopenis secretion contains E-4-methyl-4-hepten-3-one(IV), 4-methylheptan-3-one(V), E,E-2,4-dimethylhexa-2,4-dien-1-ol(VII), and E,E-2,4-dimethylhepta-2,4-dien-1-ol(VIII).
(4) NB-598, (E)N-ethyl-N-(6,6-dimethyl-2-hepten-4-ynyl)-3-[(3,3'-bith iophen-5-yl)methoxy]benzene-methanamine, was found to inhibit human microsomal squalene epoxidase (from Hep G2 cells) in a competitive manner.
(5) The effects of varying the structure of philanthotoxin (PhTX) were investigated on binding of the channel blockers: [3H]perhydrohistrionicotoxin (H12-HTX) to the nicotinic acetylcholine receptor (nACh-R) of Torpedo electric organ and [3H]MK-801 [( 3H]-5-methyl-10,11-dihydro-5H-dibenzocyclo-hepten-5,10-imine maleate) to the N-methyl-D-aspartate receptor (NMDA-R) of rat brain cortex.
(6) Application of (+)-5-methyl-10,11-dihydro-5H-dibenzo-[a,d]cyclo-hepten- 5,10-imine hydrogen maleate (MK-801) and 2-amino-5-phosphonopentanoic acid (2-AP5), antagonists of N-methyl-D-aspartate (NMDA) excitatory amino acid (EAA) receptors, reduced the late multiple population spike component in slices from aged rats incubated in 8-CPT.
(7) antagonists such as kynurenic acid, 2-amino-5-phosphonopentanoic acid (AP5), cis-2,3-piperidine dicarboxylic acid (cis-2,3 PDA) and (+)-5-methyl-10,11,-dihydro-5H-dibenzo(a,d)cyclo-hepten-5,10-imine maleate (MK 801), has been studied on the epileptiform activity elicited in rat hippocampal slices, bathed in penicillin (1 mM).
(8) For these investigations 14C-labelled levomenol ((-)-6-methyl-2-(4-methyl-3-cyclohexen-1-yl)-5-hepten-2-ol; (-)-alpha-bisabolol) was prepared by biochemical incorporation of [14C]-acetate into the molecule.
(9) Perhaps 2-tr-heptenal is only produced in the presence of a defined ratio of both isomeric hydroperoxides.
(10) 6-Methyl-5-hepten-2-one can also undergo breakdown to form malonaldehyde.
(11) Six components, whose concentrations were depressed after adrenalectomy, were identified: 2-heptanone, trans-5-hepten-2-one, trans-4-hepten-2-one, n-pentyl acetate, cis-2-penten-1-yl acetate, and 2,5-dimethylpyrazine.
(12) Compounds with high activity and a broad activity spectrum are 2-ethyl-hexen-2al, 2-isopropyl-5-methyl-hexen-2-al and 2-propyl-hepten-2-al, these compounds are specially active against spores and mycobacteria.
(13) From the leaves and flowers of Lippia dulcis collected in Panama, a new sweet sesquiterpene identified as (+)-4 beta-hydroxyhernandulcin [2] was isolated, accompanied by (+)-hernandulcin [1], (-)-epihernandulcin [3] (a novel natural product), and 6-methyl-5-hepten-2-one [4].
(14) Synthesis of 6,6-dimethyl-1-hepten-4-yn-3-ol and 2-alken-4-ynylamines were modified.
(15) cis-2-Methyl-6-methylamino-2-hepten-1-ol was identified as a minor urinary metabolite of isometheptene in the rat.
(16) Four additional new bioactive heptenes, melodorinol [2], homomelodienone [4], 7-hydroxy-6-hydromelodienone [5], and homoisomelodienone [7] have been isolated from Melodorum fruticosum.
(17) The beta-alkyl substituted acrolein congeners crotonaldehyde, trans-2-pentenal, trans-2-hexenal, 2,4-hexadienal, and trans-2-heptenal were clearly mutagenic in a slightly modified preincubation Ames test with Salmonella typhimurium TA100 with and without S9 mix using a threefold bacterial cell density and a 90-min preincubation time, whereas trans-cis-2,6-nonadienal did not show any mutagenic activity.
(18) The origin of 2-tr-heptenal could not be clarified; it occured neither in the experiments with predominating 9-LHPO nor in those with predominating 13-LHPO.
(19) Washing the microsomes after incubation with hexenal or heptenal did not substantially decrease the inhibition, but with nonenal the inhibition was reduced by washing.
(20) As reaction products of thermal treatments among other increased amounts of acetoin, furfural, 5-methylfurfural and 6-methyl-5-hepten-2-one were established.
Lubricant
Definition:
(a.) Lubricating.
(n.) That which lubricates; specifically, a substance, as oil, grease, plumbago, etc., used for reducing the friction of the working parts of machinery.
Example Sentences:
(1) Utilizing the bilateral comparison technique in 30 hospitalized patients with chronic stable plaque-type psoriasis vulgaris, we closely monitored the clinical responses to ultraviolet radiation (Westinghouse fluorescent FS40 bulbs, 290--400 nm) and a variety of tar preparations and lubricant vehicles in combination and separately.
(2) Several functional properties of MG1, MG2, and PRG have been examined, including their presence in two-hour in vivo enamel pellicle, binding to synthetic hydroxyapatite, lubricating properties, and interactions with oral streptococci.
(3) We have reviewed the functions of salivary secretions and the major role that saliva plays in maintaining oral homeostasis by protection, repair, and lubrication as well as in the initial phase of digestion.
(4) Results of the determinations indicated that protective leather gloves contained considerable content of chromium, and chromium-free machine oils and lubricants were polluted with chromium's minute quantities as the oils and lubrications were being used.
(5) I used it primarily as a social lubricant but also to alleviate boredom, stress and loneliness.
(6) An artificial joint that articulates with full fluid film lubrication could greatly reduce wear and frictional torque and hence reduce the incidence of loosening and inflammatory tissue reaction.
(7) Sexual dysfunctions which impair coital ability, especially ejaculatory difficulties in the male and genital atrophy and loss of vaginal lubrication in the female, are frequent.
(8) They distribute stresses over a broad area of articular cartilage, absorb shocks during dynamic loading, and probably assist in joint lubrication.
(9) Lubricants, anthralin, and corticosteroids form the mainstay of therapy in mild and moderate psoriasis of the palms and soles.
(10) These include: transcutaneous energy transmission and an implanted variable volume device which eliminate the need for percutaneous access; utilization of an intrathoracic blood pump and variable volume device which allow the diaphragm and abdominal cavity to remain intact; parathoracic or subcutaneous location of the transformer secondary, energy converter, internal battery and interconnecting elements allowing replacement with a minor surgical procedure; employment of the "biolized" continuous blood contacting surface which has the potential of long-term use without anticoagulants and utilization of an electrohydraulic energy converter which provides synchronization without requiring transducers and associated electronics and which provides lubrication of mechanical components.
(11) In the second experimental group the canal negotiation was done in the same way but using a cream (ENDO-PTC) with sodium hypochlorite as a lubrication substance.
(12) This modulates the interaction strength between the polypeptide and water species that "lubricates" the chain's movements, leading to larger protein-volume fluctuation and higher ultrasonic absorption.
(13) Eucerin cream, Gauztex bandages, and DuoDerm pads were used to lubricate and stabilize anesthetic armamentarium.
(14) Since prosthetic meniscal replacement may be performed in the setting of normal articular cartilage, a prosthesis will be required to match the exact joint configuration, induce the same lubricity, produce the same coefficient of friction, and absorb and dampen the same joint forces (without incurring significant creep or abrasion) as does the normal meniscus.
(15) Attention is their choice of lubricant, and we really should not provide it.
(16) The effects of lubrication on the retention of parallel-sided and tapered cast post and cores cemented with zinc phosphate-cement (ZnPO4) and glass ionomer cements were investigated.
(17) Optimal conditions for the protective and lubricant properties of respiratory mucus are represented by high wettability, and adhesiveness high enough not to induce flow of mucus in the respiratory bronchioles under gravity but low enough to mobilize mucus by airflow during coughing.
(18) This lubricant was chosen because it does not damage the tissues defenses of the host and invite infection.
(19) When sharpened with citrus and lubricated with olive oil, this is a real delight.
(20) The final level reached was independent of the specific surface area of the lubricants, but granular magnesium stearate gave a lower surface coverage than the powdered lubricants.