At ra

USAGE SUMMARY

The phrase "At ra" is not correct or usable in written English.
It appears to be an incomplete or truncated phrase, lacking context or clarity. Example: "At ra" does not form a coherent sentence or expression.

⚠ May contain grammatical issues

Science

Human-verified examples from authoritative sources

Exact Expressions

35 human-written examples

At Ra = 104, particles are more uniformly distributed than for the case with Ra = 106.

Nanoscale Research Letters

At Ra = 104, the maximum Nu number occurs at about 40° (estimated as 45° in refs. [10, 12]), and at Ra = 106, Nu number attains its maximum value at 26° (estimated as 30° in refs. [10, 12]).

Nanoscale Research Letters

At Ra = 104, the maximum Nu number occurs at about 40°, and at Ra = 106, the Nu number attains its maximum value at 26°, where 0° denotes a differentially heated enclosure.  .

Nanoscale Research Letters

At Ra = 104, a 30%% increase in the convection heat transfer coefficient is observed with respect to the base fluid, and this is independent of the inclination angle.

Nanoscale Research Letters

At Ra = 104, heat transfer is more dominated by conduction and the addition of nanoparticles has a weaker effect on heat transfer augmentation.

Nanoscale Research Letters

At Ra = 106, however, at some inclination angles, particularly at 90° (bottom-heated), predictions of our two-phase flow model are different from refs. [9, 10, 12].

Nanoscale Research Letters

Human-verified similar examples from authoritative sources

Similar Expressions

25 human-written examples

We separated animals in four different experimental groups (HgCl2, HgCl2+at-RA, at-RA and vehicle).

BMC Nephrology

At-RA is a vitamin A metabolite which has shown beneficial effects on several nephropathies, even though no clear targets for at-RA were provided.

BMC Nephrology

Most studies have examined the effects of at-RA on β2 integrin expression [ 27- 30].

BMC Nephrology

We assessed the effects of all-trans retinoic acid (at-RA) in this experimental model.

BMC Nephrology

Thereby we point out the VLA-4 integrin as a target for at-RA in vivo.

BMC Nephrology

Expert writing Tips

Best practice

Double-check the intended meaning and context to ensure the phrase is not a typo or abbreviation requiring clarification. Common alternatives include phrases like "at risk" or references to "rheumatoid arthritis" (RA).

Common error

Avoid assuming that "ra" always refers to Rayleigh number or Rheumatoid Arthritis without proper context. Always spell out the full term or define the abbreviation upon its first usage for clarity.

Linguistic Context

The phrase "At ra", when it appears in the provided examples, functions as a prepositional phrase, often specifying a condition or state related to a scientific parameter (Rayleigh number) or in the context of rheumatoid arthritis (RA). However, Ludwig AI notes that the phrase is often incomplete and lacks context.

Expression frequency: Uncommon

Frequent in

Science

100%

Less common in

News & Media

0%

Formal & Business

0%

Encyclopedias

0%

Ludwig's WRAP-UP

In summary, the phrase "At ra" is generally considered grammatically incorrect or incomplete without further context, as flagged by Ludwig AI. While it appears in scientific literature, particularly concerning Rayleigh numbers (Ra) or rheumatoid arthritis (RA), its usage requires careful attention to ensure clarity. It's crucial to provide sufficient information to avoid misinterpretation. When referring to Rayleigh numbers, specify the value (e.g., "At Ra = 104"). If discussing rheumatoid arthritis, ensure "RA" is clearly defined and the context is unambiguous. Related phrases like "at risk" or "at random" offer alternative expressions in different contexts.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

At risk

Changes the phrase to indicate a state of potential harm or danger.

At random

Replaces the phrase with an expression meaning without a specific pattern or purpose.

With respect to RA

Alters the phrase to indicate a point of reference concerning rheumatoid arthritis (RA).

Regarding RA

Substitutes the phrase to denote a focus on rheumatoid arthritis (RA).

Concerning RA

Modifies the phrase to specify a subject matter of rheumatoid arthritis (RA).

During RA

Shifts the phrase to indicate an event happening within the time frame of rheumatoid arthritis (RA).

While having RA

Rephrases the statement to signify a simultaneous condition of having rheumatoid arthritis (RA).

When diagnosed with RA

Changes the phrase to refer to the point of being diagnosed with rheumatoid arthritis (RA).

In relation to RA

Replaces the phrase with a general expression of connection to rheumatoid arthritis (RA).

Connected to RA

Rephrases the phrase to express a link or association with rheumatoid arthritis (RA).

FAQs

What does "At ra" mean in scientific contexts?

In scientific papers, "At Ra" often refers to a specific value of the Rayleigh number, a dimensionless number that characterizes the type of fluid convection. Without additional context, it's impossible to know if that is the correct meaning. Always check the surrounding text.

Is "At ra" grammatically correct?

According to Ludwig AI, the phrase "At ra" is not correct or usable in written English without more context. It often appears to be an incomplete or truncated phrase.

How can I use "At ra" correctly in a sentence about Rayleigh number?

Instead of just "At ra", specify the value like "At Ra = 104, the particles are more uniformly distributed." This provides the necessary context for understanding the Rayleigh number value.

What is a possible correct sentence using "at" followed by the letters "ra"?

A possible correct sentence example is: "A higher proportion of rheumatoid arthritis cases and controls were postmenopausal "at RA diagnosis" in NHS compared to NHSII cohorts."