What's the difference between index and logarithm?

Index


Definition:

  • (n.) That which points out; that which shows, indicates, manifests, or discloses.
  • (n.) That which guides, points out, informs, or directs; a pointer or a hand that directs to anything, as the hand of a watch, a movable finger on a gauge, scale, or other graduated instrument. In printing, a sign used to direct particular attention to a note or paragraph; -- called also fist.
  • (n.) A table for facilitating reference to topics, names, and the like, in a book; -- usually alphabetical in arrangement, and printed at the end of the volume.
  • (n.) A prologue indicating what follows.
  • (n.) The second digit, that next pollex, in the manus, or hand; the forefinger; index finger.
  • (n.) The figure or letter which shows the power or root of a quantity; the exponent.
  • (v. t.) To provide with an index or table of references; to put into an index; as, to index a book, or its contents.

Example Sentences:

  • (1) In this study, the role of psychological make-up was assessed as a risk factor in the etiology of vasospasm in variant angina (VA) using the Cornell Medical Index (CMI).
  • (2) Concentrations of alpha-lactalbumin and alpha s1-casein were measured in media and explant homogenates by radioimmunoassay, as an index of lactogenesis.
  • (3) Using multiple regression, a linear correlation was established between the cardiac index and the arterial-venous pH and PCO2 differences throughout shock and resuscitation (r2 = .91).
  • (4) In all groups, there was a fall in labeling index with time reflecting increasing tumor size.
  • (5) Pituitary weight, mitotic index and chromosomes were studied in male rats following a single or repeated dose of estradiol-benzoate for a total period of 210 days.
  • (6) The groups were matched with regard to sex, age and body mass index.
  • (7) Peaks in the sperm index were preceded by 6 days with peaks in the serum testosterone concentration.
  • (8) The time for 90% of this change in VelCO2 to occur (T90) was measured as an index of the rate of correction of body CO2 imbalance.
  • (9) Results suggest that these resins should be used with some method to compensate for the shrinkage, when used as index material.
  • (10) The labeling index of the treated groups was significantly reduced when compared to that of control group in both tumors.
  • (11) Several dimensions of the outcome of 86 schizophrenic patients were recorded 1 year after discharge from inpatient index-treatment to complete a prospective study concerning the course of illness (rehospitalization, symptoms, employment and social contacts).
  • (12) Discriminant analysis was performed with the fourth child in the family as the index case.
  • (13) In the kidneys the index of incorporation inthe epithelial cells of the renal cortex was 7.5-fold and in the brain cortex epithelium 15-fold as increased, respectively.
  • (14) The index estimated the probability of infection more accurately (p less than 0.01) than did clinicians, performed well in each site, and remained accurate when C. trachomatis and N. gonorrhoeae were considered separately.
  • (15) (2) A close correlation between the obesity index and serum GPT was recognized by elevation of the standard partial regression coefficient of serum GPT to obesity index and that of obesity index to serum GPT when the data from all 617 students was analysed in one group.
  • (16) Patients were divided into two groups: poor outcome, defined by the death or a post-operative Karnofsky index less than or equal to 70 (n = 36), and good outcome defined by a Karnofsky index of 80 or more (n = 60).
  • (17) The IgG index (formula: see text) corrects for the influence of serum protein abnormalities as well as a bloodbrain barrier damage and is, therefore, a better measure for the presence of an IgG elevation in CSF due to IgG synthesis, when compared with other IgG quotients commonly used.
  • (18) A quantitative index of duodenogastric reflux was obtained in each case by determining the percentage of the injected dose of 99mTechnetium-DISIDA that was recovered by continuous aspiration of gastric juice in fasting subjects.
  • (19) Following thawing, the initial motility index (MI) scores of mf cryopreserved by either method were not significantly different from untreated controls; however, over a period of 15 days in culture the MI scores of both cryopreserved groups showed a small but significant overall decline, with the methanol technique producing the lowest scores.
  • (20) Then, the delta Fract (coronary flow reserve index) map was obtained for each subject.

Logarithm


Definition:

  • (n.) One of a class of auxiliary numbers, devised by John Napier, of Merchiston, Scotland (1550-1617), to abridge arithmetical calculations, by the use of addition and subtraction in place of multiplication and division.

Example Sentences:

  • (1) The pattern of day to day variability in egg counts from individuals can be characterized by the linear relationship between the logarithms of the variances and means.
  • (2) A logarithmic relationship between closing tension and tensile strength was demonstrated using linear regression analysis with t = 6.18, p less than .0001, and R2 = .44.
  • (3) For the liver enzyme, the logarithm of the inhibition constant was linearly related to the number of carbon atoms in the saturated fatty acids whereas the muscle enzyme, which was generally more strongly inhibited, showed a nonlinear dependence.
  • (4) The results indicate that in confluent cultures, cells with high GGT activities have significantly higher cellular GSH content, and a linear correlation exists between the glutathione content and the logarithm of the GGT activity.
  • (5) The mean duration of the homosynaptic depression in healthy persons was 5200 ms. After the initial relative facilitation the time course of the homosynaptic depression corresponded to a logarithmic function of the interval between the conditioning and testing stimuli.
  • (6) This 20-h period was immediately followed by a 4-day logarithmic phase of virus production.
  • (7) The percentage inhibition of ATCase responds in a linear way to the logarithm of the concentration of PALA between 0.10 and 1.00 micrometer.
  • (8) There was a negative correlation (r = -0.59) between the logarithm of the spontaneous discharge rate and relative threshold at CF with the lowest spontaneous rate fibres having the highest thresholds and vice-versa.
  • (9) Mitochondrial membrane potential was not significantly affected by the cell culture density, as long as the cells were in the logarithmic phase of growth.
  • (10) The physiological effects of metronidazole on the growth, viability, fermentation end-product production and cellular morphology of Clostridium pasteurianum cells growing logarithmically were studied.
  • (11) The logarithm of the odds ratio between GTHR and c-erbA beta was 3.67, and therefore GTHR mapped to the c-erbA beta locus in this kindred.
  • (12) Logarithms of the rate of Ca2+ influx were plotted against values of delta psi.
  • (13) For B. subtilis, the logarithm of the inhibitory potency of most compounds increases linearly with the logarithm of the partition coefficient.
  • (14) By plotting logarithms of normalized radioactivities against PCR amplification cycles, straight lines were obtained with different slopes.
  • (15) The negative logarithm of the concentration displacing 50% of the tracer (pIC50), or producing 50% of the maximal contractile response (pEC50), was determined.
  • (16) When Monte Carlo simulations of clonal growth resulted in clones with large populations (> 50 cells), the population as a whole behaved in a deterministic fashion (logarithmic growth) similar to those observed in clinically observed neoplasms and consistent with other published models of tumour growth.
  • (17) The toxic effects of BaP to logarithmically growing NMuLi were inhibited 40% by 7,8 benzoflavone, and the inhibition was concentration dependent.
  • (18) Logarithmic conversion of the total spore count showed significant reduction in all indoor locations of air-conditioned homes.
  • (19) There was a close linear relationship (r = 0.903) between the optical density of the bioluminescent images and the logarithmic values of the tissue calcium ion concentration.
  • (20) Milk production per unit mammary wet weight, dry fat-free tissue, deoxyribonucleic acid, and ribonucleic acid were related to day of lactation by an equation of the form Y = aXbecX, where Y was milk production per unit mammary gland growth, X was day of lactation, e was the base of natural logarithms, and a, b, and c were constants.