Sentence examples for been introduced by several from inspiring English sources

To meet the current demands for rapid DNA amplification, various instruments and innovative technologies have been introduced by several groups in recent years.

Subsequently, various approaches to the problem have been introduced by several authors.

Different iterative schemes have been introduced by several authors to approximate the fixed points of nonexpansive mappings (see, for example, [3 5]).

For instance, high performance photocatalysts such as carbon nanotube-TiO2 [12 14], fullerene-TiO2 (C60-TiO2) [15 17], and graphene-TiO2 [19] 19] composites have been introduced by several groups and have shown enhanced photocatalytic activities.

In recent years, many treatment functions have been introduced by several authors to study some epidemic models under different conditions (see, for instance, [12, 14, 27, 31, 35 38]).

Thus, the GROV/WYOV common ancestor might have been introduced by several different means during the transport of persons, supplies, or both.

A comparison of these LPS loci indicates that the ancestor of all X. oryzae pathovars is likely to have had an LPS locus that is related to the corresponding locus in Xac with variations in the X. oryzae lineage being introduced by several largescale HGT events.

The samples will be stored at -80°C in the Hospital's BioBank and analyzed together at the end of the study, thereby limiting the potential bias that could be introduced by several different analytical procedures and laboratory personnel turn-over in the course of the trial.

Later on, the use of ventriculography to delineate the ac pc line in monkey surgery (in the same way as conducted in humans by this time) was introduced by several groups (Percheron and Lacourly 1973, Féger et al. 1975, Ilinsky and Kultas-Ilinsky 1982), and therefore, the availability of a stereotaxic atlas based on internal landmarks and the ac pc line became an urgent need (Dubach et al. 1985).

In addition, voluntary codes of best practice for base station siting have been introduced by mobile network operators in several countries to enable early community and local government consultation in base station location decisions (Australian Communications Industry Forum 2004; Mobile Operators Association 2001).

According to Mr. Cohen's 2005 interview with city investigators, Mr. Cohen has known Mr. Kerik for several years, having been introduced by a friend in common, Nathan Berman, a real estate developer who has also lent Mr. Kerik money.