“…Un essai limite à concentration unique peut être conduit à 100 mg/l de substance d’essai ou jusqu’à sa limite pratique de solubilité (Si cette valeur est la plus basse), de façon à démontrer que la CE50 est supérieure à cette concentration…”

“…The CaSR is a multifaceted molecule that senses changes in the concentration of a wide variety of environmental factors including di- and trivalent cations, amino acids, polyamines, and pH. …”

“…There are four replicates in each test concentration with eight replicates for the control. …”

“…Depending on the experimental design, the No Observed Effect Concentration (NOEC) or the Effect concentration for x percent effect (ECx) can be determined. …”

“…The determination of the dissociation constant requires a measure of the concentrations of the dissociated and undissociated forms of the chemical substance. …”

“…La concentration, dans un établissement d’enseignement, d’élèves issus de l’immigration ou d’élèves qui ne parlent pas la langue d’instruction à la maison ne présente pas une corrélation aussi forte avec une moindre performance scolaire…”

“…For agrochemicals, a minimum of two test concentrations are recommended (five for non agrochemicals) and these should be chosen in relation to the highest concentration anticipated in the field. …”

“…The adsorption coefficient is defined as the ratio between the concentration of the substance in the soil/sludge and the concentration of the substance in the aqueous phase at adsorption equilibrium. …”

“…Prothrombin complex concentrate and other plasma concentrates are useful to deal with over-coagulated situations. …”

“…Statistical methods for the treatment of a large set of XRD patterns of ores and mineral concentrates, as well as their value for the characterization of mineral concentrates and ores, will be demonstrated. …”

“…Des solutions aqueuses tampon, stériles, de différents pH (pH 4, 7 et 9) sont traitées avec la substance d’essai marquée ou non (une seule concentration n’excédant pas 0.01M ou la moitié de la concentration de saturation), puis incubées dans l’obscurité dans des conditions expérimentales contrôlées (à des températures constantes). …”

“…Un minimum de quatre concentrations connues du produit chimique étudié, et une concentration connue en ions métalliques devraient être employées. …”

“…L’effet observé est la réduction de croissance dans une série de cultures d'algues exposées à, au moins, cinq concentrations d'une substance d'essai. Trois réplicats pour chaque concentration d'essai doivent être employées. …”

“…In addition to the test concentration, a control group of fish is held without the test substance. …”

“…This difference is compared with the concentration of the added test substance to calculate the elimination of the test substance. …”

“…Jennifer is visibly tense and restless during the interview and has difficulty concentrating. Lately, she has found most day-to-day activities to be challenging and overwhelming to the point where they have impacted her functioning. …”

“…heories about the origins and developments of modern cities seem to agree, without exception, to a point: the city is the place of maximum concentration of exchange. Activities, in fact, are located into urban and metropolitan agglomerations to minimize the resources needed to meet the growing need for relationships and exchanges with other activities. …”

“…The most of recent publications concentrated on the review of the pollutants emissions from industry, especially power sector. …”

“…Indeed, if the fluorescence is > 12% by including the highest concentration of the test, the test is considered positive. …”