The phrase "an efficient and valuable" is correct and usable in written English.
It can be used to describe something that is both effective in achieving its purpose and holds worth or importance.
Example: "The new software is an efficient and valuable tool for managing our projects."
Alternatives: "a productive and beneficial" or "a useful and effective".
We certainly acknowledge that what is warranted in this situation is a sincere apology — but not a generalized defamation of an efficient and valuable way of shopping today.
Cyclostationary empirical orthogonal function (CSEOF) analysis is introduced as an efficient and valuable technique to interpret space time structure of variability in a big dataset.
Creating the bases for an efficient and valuable educational intervention, pedagogy requires a constant reconfiguration of its own institutional ontology, as an extension and in complementarity with its comprehensive ontology.
As magnesium alloys possess very limited formability at room temperature, and their formability becomes better at higher temperatures (>100 °C), the inverse analysis constitutes an efficient and valuable tool to predict forming of magnesium alloy parts as a function of temperature.
These results show that the HEK293 cell line is an efficient and valuable host for the production of biologically active and glycosylated human IFNα2b.
Ionizing radiation (IR) is a potentially lethal threat to all organisms, but it is also an efficient and valuable treatment option in cancer therapy [ 5].
Therefore, strategies directed at silencing RPTPσ by RNAi may prove to be a beneficial, efficient and valuable approach for the treatment of SCI.
In such cases barcoding is a very efficient and valuable technique.
"We recognize that natural gas is an efficient, clean and valuable resource," Terry Kovacevich, the council's chairman and Marathon's regional vice president, said in a statement, "and that's why the industry has invested more than $6 billion in new pipelines, processing plants and other infrastructure to move it from the wellhead to the marketplace".
Photovoltaic energy generation is envisaged as an efficient, natural and valuable energy source not only for outdoor but also for indoor applications, even if it is often difficult to give an adequate description of the indoor illumination conditions, and till now no (international) norms regulate the characterization of solar cells under the particular indoor conditions.
Plants are recognized as an efficient and inexpensive system to produce valuable recombinant proteins.
