DPPH Free Radical Scavenging Assay

Quantify antioxidant capacity by measuring the reduction of the stable DPPH radical (purple → yellow) at 517 nm. Covers both cuvette and microplate formats with Vitamin C standard curve.

Download & print protocols as checklists

• Print any protocol as a clean single-page checklist (Materials, Equipment, Procedure) straight from your browser.
• Download any protocol as a Markdown checklist for offline use or AI assistants.

agent-skills

23 production-grade engineering skills for AI coding agents by Addy Osmani (Google Chrome). Covers the full Define-to-Ship lifecycle with Doubt-Driven Development for adversarial self-verification, Anti-rationalization Tables to prevent shortcutting, and 3 specialist personas for parallel review. Pure Markdown, zero dependencies. MIT licensed.

ARIS (Auto-Research-In-Sleep)

Autonomous ML research framework using cross-model adversarial review — Claude Code executes experiments while GPT reviews and finds weaknesses. Covers the full research lifecycle from literature review to submission-ready manuscript. Requires dual LLM subscription. MIT licensed, Markdown-only, zero framework dependencies.

awesome-design-systems

Curated list of 163 design systems from enterprise, government, and open-source communities. Each entry annotates component library, design tokens, and Storybook availability. Best starting point for design system selection and comparison. Unlicense.