What's the difference between occur and present?

Occur


Definition:

  • (v. i.) To meet; to clash.
  • (v. i.) To go in order to meet; to make reply.
  • (v. i.) To meet one's eye; to be found or met with; to present itself; to offer; to appear; to happen; to take place; as, I will write if opportunity occurs.
  • (v. i.) To meet or come to the mind; to suggest itself; to be presented to the imagination or memory.

Example Sentences:

  • (1) Once treatment began, no significant changes occurred in Group 1, but both PRA and A2 rose significantly in Groups 2 and 3.
  • (2) Direct fetal digitalization led to a reduction in umbilical artery resistance, a decline in the abdominal circumference from 20.3 to 17.8 cm, and resolution of the ascites within 72 h. Despite this dramatic response to therapy, fetal death occurred on day 5 of treatment.
  • (3) Patients with papillary carcinoma with a good cell-mediated immune response occurred with much lower infiltration of the tumor boundary with lymphocyte whereas the follicular carcinoma less cell-mediated immunity was associated with dense lymphocytic infiltration, suggesting the biological relevance of lymphocytic infiltration may be different for the two histologic variants.
  • (4) It is concluded that during exposure to simulated microgravity early signs of osteoporosis occur in the tibial spongiosa and that changes in the spongy matter of tubular bones and vertebrae are similar and systemic.
  • (5) HSV I infection of the hand classically occurs in children with herpetic stomatitis and in health care workers infected during patient care delivery.
  • (6) Such an increase in antibody binding occurred simultaneously with an increase in the fluidity of surface lipid regions, as monitored by fluorescence depolarization of 1-(trimethylammoniophenyl)-6-phenyl-1,3,5-hexatriene.
  • (7) As far as acrophase table is concerned for all enzymes and fractions the acrophase occurred during the night.
  • (8) Electronmicroscopical investigations have revealed that, under normal conditions, a minor vesicular transfer of intravenously injected peroxidase occurs across the endothelium in segments of arterioles, capillaries and venules, especially in arterioles with a diameter about 15-30 mu.
  • (9) No significant change occurred in the bacterial population of our hospital unit during the period of the study (more than 3 years).
  • (10) The highest rate of discontinuation occurred when method choice was denied in the presence of husband-wife agreement on method choice, and the lowest rate occurred when method choice was granted in the presence of such concurrence.
  • (11) The secondary leukemia that occurred in these patients could be distinguished from the secondary leukemia that occurs after treatment with alkylating agents by the following: a shorter latency period; a predominance of monocytic or myelomonocytic features; and frequent cytogenetic abnormalities involving 11q23.
  • (12) An inflammatory process than occurs in the airways that is characterized by an influx of eosinophils and neutrophils into the airway epithelium and bronchial fluids.
  • (13) A clinical and microbiologic response occurred when anticoagulation therapy with heparin was added to the treatment regimen.
  • (14) Infection with opportunistic organisms, either singly or in combination, is known to occur in immunocompromised patients.
  • (15) A commensurate rise in both smoking and adenocarcinoma has occurred in the Far East where the incidence rate (40%) is twice that of North America or Europe.
  • (16) As prolongation of the action potential by TEA facilitates preferentially the hormone release evoked by low (ineffective) frequencies, it is suggested that a frequency-dependent broadening of action potentials which reportedly occurs on neurosecretory neurones may play an important role in the frequency-dependent facilitation of hormone release from the rat neurohypophysis.
  • (17) The role of O2 free radicals in the reduction of sarcolemmal Na+-K+-ATPase, which occurs during reperfusion of ischemic heart, was examined in isolated guinea pig heart using exogenous scavengers of O2 radicals and an inhibitor of xanthine oxidase.
  • (18) Angle closure glaucoma is a well-known complication of scleral buckling and it is of particular interest when it occurs in eyes with previously normal angles.
  • (19) The concentrations of five normally occurring protease inhibitors in serum and synovial fluid were compared in patients with rheumatoid arthritis, osteoarthrosis, and normal controls.
  • (20) A strong block to the elongation of nascent RNA transcripts by RNA polymerase II occurs in the 5' part of the mammalian c-fos proto-oncogene.

Present


Definition:

  • (a.) Being at hand, within reach or call, within certain contemplated limits; -- opposed to absent.
  • (a.) Now existing, or in process; begun but not ended; now in view, or under consideration; being at this time; not past or future; as, the present session of Congress; the present state of affairs; the present instance.
  • (a.) Not delayed; immediate; instant; coincident.
  • (a.) Ready; quick in emergency; as a present wit.
  • (a.) Favorably attentive; propitious.
  • (a.) Present time; the time being; time in progress now, or at the moment contemplated; as, at this present.
  • (a.) Present letters or instrument, as a deed of conveyance, a lease, letter of attorney, or other writing; as in the phrase, " Know all men by these presents," that is, by the writing itself, " per has literas praesentes; " -- in this sense, rarely used in the singular.
  • (a.) A present tense, or the form of the verb denoting the present tense.
  • (a.) To bring or introduce into the presence of some one, especially of a superior; to introduce formally; to offer for acquaintance; as, to present an envoy to the king; (with the reciprocal pronoun) to come into the presence of a superior.
  • (a.) To exhibit or offer to view or notice; to lay before one's perception or cognizance; to set forth; to present a fine appearance.
  • (a.) To pass over, esp. in a ceremonious manner; to give in charge or possession; to deliver; to make over.
  • (a.) To make a gift of; to bestow; to give, generally in a formal or ceremonious manner; to grant; to confer.
  • (a.) Hence: To endow; to bestow a gift upon; to favor, as with a donation; also, to court by gifts.
  • (a.) To present; to personate.
  • (a.) To nominate to an ecclesiastical benefice; to offer to the bishop or ordinary as a candidate for institution.
  • (a.) To nominate for support at a public school or other institution .
  • (a.) To lay before a public body, or an official, for consideration, as before a legislature, a court of judicature, a corporation, etc.; as, to present a memorial, petition, remonstrance, or indictment.
  • (a.) To lay before a court as an object of inquiry; to give notice officially of, as a crime of offence; to find or represent judicially; as, a grand jury present certain offenses or nuisances, or whatever they think to be public injuries.
  • (a.) To bring an indictment against .
  • (a.) To aim, point, or direct, as a weapon; as, to present a pistol or the point of a sword to the breast of another.
  • (v. i.) To appear at the mouth of the uterus so as to be perceptible to the finger in vaginal examination; -- said of a part of an infant during labor.
  • (n.) Anything presented or given; a gift; a donative; as, a Christmas present.
  • (n.) The position of a soldier in presenting arms; as, to stand at present.

Example Sentences:

  • (1) By presenting the case history of a man who successively developed facial and trigeminal neural dysfunction after Mohs chemosurgery of a PCSCC, this paper documents histologically the occurrence of such neural invasion, and illustrates the utility of gadolinium-enhanced magnetic resonance scanning in patient management.
  • (2) It was tested for recovery and separation from other selenium moieties present in urine using both in vivo-labeled rat urine and human urine spiked with unlabeled TMSe.
  • (3) A report is presented of 6 surgically-treated cases of recurrent cervical carcinoma.
  • (4) The newborn with critical AS typically presents with severe cardiac failure and the infant with moderate failure, whereas children may be asymptomatic.
  • (5) The rash presented either as a pityriasis rosea-like picture which appeared about three to six months after the onset of treatment in patients taking low doses, or alternatively, as lichenoid plaques which appeared three to six months after commencement of medication in patients taking high doses.
  • (6) The authors have presented in two previous articles the graphic solutions resembling Tscherning ellipses, for spherical as well as for aspherical ophthalmic lenses free of astigmatism or power error.
  • (7) The neurologic or digestive signs were present in 12% of the children.
  • (8) These studies led to the following conclusions: (a) all the prominent NHP which remain bound to DNA are also present in somewhat similar proportions in the saline-EDTA, Tris, and 0.35 M NaCl washes of nuclei; (b) a protein comigrating with actin is prominent in the first saline-EDTA wash of nuclei, but present as only a minor band in the subsequent washes and on washed chromatin; (c) the presence of nuclear matrix proteins in all the nuclear washes and cytosol indicates that these proteins are distributed throughout the cell; (d) a histone-binding protein (J2) analogous to the HMG1 protein of K. V. Shooter, G.H.
  • (9) Weddellite calcification was associated with benign lesions in 16 cases, but incidental atypical lobular hyperplasia and lobular carcinoma in situ were present, each in one case.
  • (10) In some cervical nodes, a few follicles, lymphocyte clusters, and a well-developed plasmocyte population were also present.
  • (11) Single-case experimental designs are presented and discussed from several points of view: Historical antecedents, assessment of the dependent variable, internal and external validity and pre-experimental vs experimental single-case designs.
  • (12) We have previously shown that serotonin is present in secretory granules of frog adrenochromaffin cells; concurrently, we have demonstrated that serotonin is a potent stimulator of corticosterone and aldosterone secretion by adrenocortical cells.
  • (13) Among a family of 8 children, 4 presented typical clinical and biological abnormalities related to mannosidosis.
  • (14) Multiple overlapping thin 3D slab acquisition is presented as a magnitude contrast (time of flight) technique which combines advantages from multiple thin slice 2D and direct 3D volume acquisitions to obtain high-resolution cross-sectional images of vessel detail.
  • (15) The subcellular distribution of sialyltransferase and its product of action, sialic acid, was investigated in the undifferentiated cells of the rat intestinal crypts and compared with the pattern observed in the differentiated cells present in the surface epithelium.
  • (16) The data on mapping the episomal plasmid integration sites in yeast chromosomes I, III, IV, V, VII, XV are presented.
  • (17) In the present investigation we monitored the incorporation of [14C] from [U-14C]glucose into various rat brain glycolytic intermediates of conscious and pentobarbital-anesthetized animals.
  • (18) The purpose of the present study was to report on remaining teeth and periodontal conditions in a population of 200 adolescent and adult Vietnamese refugees.
  • (19) Among the groups investigated, the subjects with gastric tumors presented the greatest values.
  • (20) We present these cases and review the previously reported cases.