What's the difference between classification and petrography?
Classification
Definition:
(n.) The act of forming into a class or classes; a distibution into groups, as classes, orders, families, etc., according to some common relations or affinities.
Example Sentences:
(1) The taxonomic relationship of strains H4-14 and 25a with previously described Xanthobacter strains was studied by numerical classification.
(2) 11 patients with a postoperative classification of stage D had additional external beam radiation to the pelvic and paraaortic lymph nodes with shielding of the implanted prostatic region.
(3) Thirteen patients had had a posterior dislocation with an associated fracture of the femoral head located either caudad or cephalad to the fovea centralis (Pipkin Type-I or Type-II injury), one had had a posterior dislocation with associated fractures of the femoral head and neck (Pipkin Type III), two had had a posterior dislocation with associated fractures of the femoral head and the acetabular rim (Pipkin Type IV), and three had had a fracture-dislocation that we could not categorize according to the Pipkin classification.
(4) Thus obtained body shape variables were used in discriminant analysis in order to obtain unbiased classification probabilities of individuals having the MBS or being normal.
(5) Although this operational classification does not produce etiologically homogeneous groups, it is believed to have pragmatic utility with respect to planning targeted surveillance and management strategies.
(6) The evaluation of the data of unknown test persons of a pilot study in 96% resulted in a correct classification in patients with heart and circulatory diseases or persons with healthy heart and circulation, the classification in the above mentioned groups of diagnosis was performed on an average to 57%.
(7) All smooth strains of Brucella bear two lipopolysaccharide (LPS) antigens in a ratio that defines the classification of strains in serovars, A (A greater than M), M (M greater than A) and A.M (A = M).
(8) Classification into hazard categories depends on the overall strength of evidence that an agent may cause mutations in humans.
(9) In addition to a better understanding of pathogenic mechanisms associated with autoimmunity, the knowledge of these disease-predisposing genes is expected to permit a better classification of often complex syndromes as well as the design of new treatments.
(10) Combining data on cows with productive and salvaged outcomes as satisfactory outcome, and terminal as unsatisfactory outcome, total correct classification was 90.7% for the admission model and 93.2% for the surgical model.
(11) The diversity of the non-Hodgkin's groups, the continued evolution of histopathologic classifications, and the great frequency of advanced disease in the lymphocytic subgroups make the Ann Arbor classification of only limited value for the non-Hodgkin's lymphomas.
(12) The interest of this view resides in the resulting general principle of classification and interpretation of all forms of disease, giving rise to an "existenialistic pathology".
(13) It allows the classification of patients by symptom profile and can demonstrate changes in that profile over time.
(14) The clinical YP classification was not supported by the present serologic findings.
(15) The technique was applied to the classification of MUAP's extracted from simulated myoelectric signals.
(16) Individual tests and batteries of tests should be standardized, employ positive controls, generate results capable of quantitative analyses that may make dichotomous classification as "positive" and "negative" obsolete, be interpreted in light of mechanisms of action, and be cost-effective on a grand scale.
(17) Problems of classification, host records, and host specificity are discussed.
(18) This is Part I of a study whose purpose is two-fold, that is, to arrive at a classification of diseases under investigation according to their responsiveness to acupuncture therapy, and to discuss and identify the most effective loci for the diseases investigated.
(19) The authors decided to keep in this series only hips presenting with a very considerable upward displacement of the femoral head of type IV in Crowe, Maini and Ranawat's classification.
(20) Results are discussed in relation to the time of treatment and the pathogenic agent involved, and a classification of the antibiotics into three groups is proposed: recommended; not advised; not sufficiently studied.
Petrography
Definition:
(n.) The art of writing on stone.
(n.) The scientific description of rocks; that department of science which investigates the constitution of rocks; petrology.
Example Sentences:
(1) It can also be used for many other applications, for example, in metallurgy, petrography and geostrategy.