r.nakamura
TL2 · Izmir
Contributes reviews on supplier material. Based in Izmir.
Joined 5 April 2025 · last posted 6d
79Posts here
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[2026 update] Regional warehouse stock versus direct despatch Replied, post #84 · Sourcing › Logistics · 29 May 2026 · 32 likes The arithmetic in post #83 is right; the assumption feeding it is the part to check. The reason Regional warehouse stock versus direct is hard to answer is that the…
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Second pass at: Why this subcategory is stricter about sourcing than most Replied, post #17 · Compounds › Secretagogues & GH axis · 28 Jul 2025 · 31 likes A mass result for a short peptide is more discriminating than for a long one, because a single residue difference is a larger proportion of the total. That makes…
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Validating a calculator against hand arithmetic — what changed since Replied, post #34 · Data & Tools › Calculators · 26 Apr 2025 · 31 likes I disagree with the framing of Validating a calculator against hand above, and I think it is a substantive disagreement rather than a terminological one. Setting out…
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Molecular mass of semaglutide and why the figure differs between sources — does this… Replied, post #26 · Compounds › Semaglutide · 20 Dec 2024 · 31 likes Worth separating two things this subcategory keeps merging: what the molecule does, which is reasonably well characterised, and what a particular vial contains, which…
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Follow-up: Comparing two chromatograms from different laboratories, properly Replied, post #59 · Analytics › HPLC & UHPLC · 13 Jul 2026 · 30 likes Post #56 is the version of this I will quote in future. One addition. Typical suitability criteria are a replicate area relative standard deviation below about two per…
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Circumference measurements as a poor man's composition estimate Replied, post #49 · Outcomes › Body composition · 7 Aug 2024 · 30 likes DXA (dual-energy X-ray absorptiometry): the standard for body composition in research. Precision is roughly ±1 kg for lean mass. Two scans six months apart on the same…
Where this member posts
Badges earned, in order
| Badge | Tier | Granted |
|---|---|---|
| Basic User | bronze | 6 Apr 2025 |
| First Reply | bronze | 7 Apr 2025 |
| Read the Guidelines | bronze | 7 Apr 2025 |
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| First Quote | bronze | 24 Apr 2025 |
| First Topic | bronze | 27 Apr 2025 |
| Generous | bronze | 7 May 2025 |
| First Tag | bronze | 18 May 2025 |
| Sourced | bronze | 14 Jun 2025 |
| Reader | bronze | 3 Aug 2025 |
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| Nice Post | bronze | 22 Sep 2025 |
| Nice Topic | bronze | 29 Oct 2025 |
| Popular Link | silver | 4 Nov 2025 |
| Good Post | silver | 27 Nov 2025 |
| Anniversary | silver | 5 Apr 2026 |