as ascertained by

USAGE SUMMARY

The phrase "as ascertained by" is correct and can be used in written English.
It is generally used to indicate that a fact or conclusion has been determined, and the source of its determination is being identified. For example, "The identity of the thief has been ascertained by CCTV footage."

✓ Grammatically correct

Science

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

(Compd. 1), as ascertained by elemental analysis.

Polyhedron

This compound presents a Cs symmetric architecture as ascertained by NMR spectroscopy and corroborated by DFT calculations.

Inorganica Chimica Acta

Incubation of the cells with 18 nM ovine prolactin resulted in rapid phosphorylation of Jak2 as ascertained by Western blotting.

Molecular and Cellular Endocrinology

The activation of methane results in the formation of the methyl anion, as ascertained by IR-Fourier spectroscopy.

Catalysis Today

The properties of the processed alloy, as ascertained by the aforementioned techniques, were compared to the as-received material.

Acta Materialia

Peptide Pep208 243 tagged with a cell penetrating peptide was found to inhibit CHPV replication as ascertained by real time RT-PCR.

Antiviral Research

This study aimed to assess the association of gestational hypertension and preeclampsia with maternal smoking status as ascertained by plasma cotinine.

American Journal of Obstetrics and Gynecology

Thoracic empyema may be characterized by fever, coughing, shortness of breath, and weight loss, and the presence of fluid as ascertained by a chest X-ray.

Encyclopedia Britannica

Uniform distribution of the spherical NiCu alloy nanoparticles on the ZnO@MWCNT surface was realized, as ascertained by scanning electron microscope and transmission electron microscope.

Electrochimica Acta

This study examined rates of dementia progression as ascertained by the Clinical Dementia Rating Sum of Boxes (CDR-SB) for symptomatic Alzheimer's disease (sAD), and assessed participant characteristics as predictors of CDR-SB progression.

Alzheimer's & Dementia

Methods: This investigation was carried out with 50 consecutively admitted in-patients with endogenous depression according to ICD 9 and unipolar major depression according to DSM-III-R as ascertained by SCID.

Journal of Affective Disorders

Expert writing Tips

Best practice

Use "as ascertained by" when you want to explicitly state the method or source used to determine a fact or conclusion, adding credibility to your statement.

Common error

Avoid excessive use of passive constructions like "as ascertained by". Opt for active voice where appropriate to make your writing more direct and engaging. For example, instead of "The results, as ascertained by the study, showed...", try "The study's results showed...".

Linguistic Context

The phrase "as ascertained by" functions as a prepositional phrase that modifies a verb or noun. It indicates the method or source used to determine a particular fact or conclusion. According to Ludwig AI, the phrase is correct and can be used in written English.

Expression frequency: Very common

Frequent in

Science

95%

Encyclopedias

1%

News & Media

1%

Less common in

Formal & Business

1%

Wiki

1%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "as ascertained by" is a grammatically correct and frequently used prepositional phrase, particularly in formal and scientific writing. As Ludwig AI confirms, it serves to add credibility by explicitly stating the source or method used to determine a fact. While alternatives like "as determined by" or "according to" exist, "as ascertained by" implies a more rigorous process. It's essential to avoid overusing passive voice and to consider the formality of the context when using this phrase.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

as determined by

Focuses on the act of finding something out definitively. It's a direct substitution.

as established by

Emphasizes that something has been firmly proven or recognized through evidence.

as verified by

Highlights that something has been checked and confirmed to be true.

as shown by

Indicates that something is made evident or apparent through specific evidence or results.

according to

Implies that information or a finding comes from a particular source or authority.

based on

Highlights the foundation or evidence upon which a conclusion or statement is made.

as indicated by

Suggests that something is pointed out or signaled by specific information or data.

as revealed by

Indicates that something has been uncovered or made known through a particular method or source.

as evidenced by

Emphasizes that something is supported or proven by particular evidence.

as confirmed by

Focuses on the fact that something has been validated or ratified through further investigation.

FAQs

How can I use "as ascertained by" in a sentence?

You can use "as ascertained by" to indicate how a piece of information was discovered or confirmed. For example, "The patient's condition, as ascertained by the doctor's examination, is stable."

What are some alternatives to "as ascertained by"?

Some alternatives include "as determined by", "as established by", or "according to". The best choice depends on the specific context.

Is "as ascertained by" formal or informal?

"As ascertained by" is generally considered a formal phrase. It is most appropriate for academic, scientific, or professional writing. In more casual contexts, simpler alternatives might be preferable.

What's the difference between "as ascertained by" and "as determined by"?

While both phrases are similar, "as ascertained by" often implies a more rigorous or investigative process, while "as determined by" can refer to a broader range of methods used to reach a conclusion.