(n.) A board with sixty-four squares of alternate color, used for playing checkers or draughts.
Example Sentences:
(1) Strains showing occasional antagonism at a particular proportion of concentrations of the test combination, were found to only be indifferent when the mean index of the fractional inhibition concentration of all checkerboard combinations was calculated.
(2) In Experiment 1, newborns differentiated gray from green, from yellow, and from red: For each of these hues they preferred chromatic-and-gray checkerboards over gray squares matched in mean luminance, even though the luminance of the gray checks was varied systematically over a wide range so as to minimize nonchromatic cues.
(3) Using the quantitative induction assay, the checkerboard method and the disc approximation test, clavulanic acid was shown to act as inducer for all species, whereas sulbactam only induced strains of Providencia stuartii.
(4) The fields formed a checkerboard pattern the element size of which variable.
(5) The new Austrian HTC, partly defined by the 9th International Histocompatibility Workshop (9WS), partly by a checkerboard experiment with internationally well defined reference HTC, type for HLA-Dw1 to -Dw7 and an obviously new, so far unknown HLA-DR2 related HLA-D determinant.
(6) The latency of the first reproducible positive peak in the P-VEP was measured monocularly and binocularly for five sizes of phase alterations checkerboard stimuli (range: 120' to 7.5' check widths).
(7) Induction of chemotaxis of LGL by OAG was time and dose-dependent, as confirmed using checkerboard assays.
(8) The released activity was chemotactic by checkerboard analysis.
(9) Responses were obtained to phase-alternating checkerboards of varying check size.
(10) The MTS task employed randomly generated checkerboard-like stimuli presented on a video display.
(11) The stimulus was a checkerboard phase-reversed at the frequency of 1 Hz, binocularly viewed by the subject.
(12) An operant technique was used to train 10-wk.-old infants on a simultaneous discrimination task with a checkerboard cube and a bull's-eye sphere presented in a stationary form.
(13) The combination of peracetic acid and hydrogen peroxide, tested by a checkerboard micromethod, was found to be synergistic.
(14) Initially the responses to checkerboard flash or reversal stimuli were computer-averaged in order to raise the signal above the noise, primarily the electroencephalogram (EEG).
(15) The patterned stimuli used were checkerboard-like matrices containing, on the average, 4, 36, 100, 400, or 900 bits of information.
(16) This stimulated migration was dose-dependent, and by checkerboard analysis was both chemotactic and chemokinetic.
(17) C-cells divided once during the kagome-checkerboard transformation, while G-cells did not divide.
(18) No synergy or antagonism was found by means of the checkerboard titration method used.
(19) Three background conditions were used: a naturalistic landscape photograph, a blank field, and a repeating checkerboard texture that provides strong contours but no information about visual direction.
(20) Consequently, the pattern electroretinogram to reversing checkerboards has to be regarded as a mixture of both pattern- (contrast) and luminance-specific components.
Chessboard
Definition:
(n.) The board used in the game of chess, having eight rows of alternate light and dark squares, eight in each row. See Checkerboard.
Example Sentences:
(1) Interaction between antibacterial agents is often assessed in chessboard titrations, in which bacteriostatic synergy is detected as a mutual reduction in the minimal inhibitory concentrations (MICs) of the agents being tested.
(2) The days when empires could treat sovereign states as pieces on a chessboard are over," he said, speaking to graduates from Moscow's New Economic School.
(3) I think it's sort of time to let go of the icon of the globe, because it places us above it and I think it has allowed us to see nature in this really abstracted way and sort of move pieces, like pieces on a chessboard, and really loose touch with the Earth.
(4) We investigated the exploratory movements of Anabantid fishes in a chessboard-like aquarium (divided into 25 communicating compartments) as a new environment.
(5) Antagonism was not reliably demonstrated in chessboard titrations, especially with the newer quinolones.
(6) The value of combination therapy, as evidenced by chessboard and killing-curve techniques with the strain, is discussed.
(7) In an anonymous basement a few streets from the 1 Undershaft site stands a chessboard showing the City of London’s future skyline.
(8) However, treatment with incomplete chessboard vaccinations in combination with a low dose of cyclophosphamide (which is not immunosuppressive, but partly inhibits tumor growth) had a synergistic therapeutic effect on minimal residual disease of Lewis lung adenocarcinoma.
(9) How many knights on a chessboard was the first question.
(10) In 21 patients with idiopathic retrobulbar neuritis (IRN) the optic nerve function was assessed using visual evoked potentials under a reversible black-and-white chessboard pattern stimulation.
(11) In a macrodilution chessboard assay against multiple combinations of penicillin, gentamicin and netilmicin, bactericidal activity uniformly occurred at two- to four-fold lower concentrations of penicillin + netilmicin than with penicillin + gentamicin.
(12) If you don't respect yourself, if you don't project your own authority, how do you expect not to end up a plaything of the bloviators and the rent seekers and people who would move you about like a piece on a chessboard?
(13) The therapeutic effect of this so-called chessboard vaccination on minimal residual disease was compared to that of the subcutaneous or i.d.
(14) As chessboard vaccination only proved to be successful in Lewis lung adenocarcinoma, but not in the other tumors, it can be concluded that the exposure of Thomsen-Friedenreich antigen plays no decisive role in tumor therapy with tumor cells and VCN.
(15) The young men of the Black Car Brigade were sprawled across the living room, chessboard on the table, guitar on the sofa, guns leaning against the wall.
(16) It’s not just another piece on the Westminster chessboard.
(17) The results show that compared to VCN-treated M-TC or single mixtures of M-TC and VCN, chessboard vaccination is the only procedure that is therapeutically effective on metastasation of Lewis lung adenocarcinoma.
(18) injections were performed in a chessboard-like manner: different numbers (10(5), 10(6), 10(7), and 10(8) of mitomycin-treated autologous tumor cells (M-TC) were each mixed with different amounts (10, 50, and 100 mU) of VCN.
(19) Embryonal carcinomas show a chessboard-like pattern of proliferating fractions with high 3H-thymidine labelling indices and short tpot.
(20) This was observed in the control system in which at 1 C'H50 hemolysis inhibition increase from 50 to 90% was found after 2 hr at 37 degrees C, after 8 hr at 20 degrees C and after 18 hr at 4 degrees C. Simultaneously, a double increase of the standard serum titre was obtained at 4 and 20 degrees C as compared with that at 37 degrees C. At stable concentration of the antigen and complement the effect of C' fixation was the strongest at 4 degrees C, slightly weaker at 20 degrees C and the weakest at 37 degrees C. The above dependence resulted from a different reaction distribution in the chessboard system at each temperature.