Recent Contents
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Creating a recruitment tracker in spreadsheet
Hiring employees without a proper system quickly becomes messy. Resumes get lost, interview dates are forgotten, duplicate follow-ups happen, and communication between HR and managers becomes confusing. A recruitment tracker solves this problem by organizing…
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Why most countries are struggling to shut down 2G?
For a technology introduced in the early 1990s, 2G has proven surprisingly difficult to kill. While countries worldwide aggressively expand 4G and 5G networks — and some are already preparing for early 6G research and…
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How to find large files in linux?
Learn how to find large files in Linux using find, du, and sort commands to free disk space, identify storage issues, and clean unnecessary files.
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How to add and delete users on Debian linux? Easy tutorial
Managing users is one of the most common system administration tasks in Debian Linux. Whether you are creating a new account for another person, giving server access to a developer, or removing unused accounts, Debian…
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Optimize MySQL databases: Complete guide to fix slow queries, improve speed, and reduce server load
A slow MySQL database can silently destroy the performance of an entire website. Pages start loading slowly, CPU usage increases, backups take longer, and eventually the server begins struggling even with moderate traffic. In many…
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Alkaline vs PEM electrolyzers: Which is better for green hydrogen?
When people talk about reducing the cost of green hydrogen, the conversation almost always comes back to one critical choice: Which electrolyzer technology is better—Alkaline or PEM? Both are widely used for hydrogen production through…
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Can seawater be used for hydrogen production? A complete, practical explanation
With freshwater becoming increasingly scarce in many parts of the world, especially in countries investing heavily in green hydrogen, a natural question arises: Can we use seawater directly to produce hydrogen? The idea is compelling.…
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How much water is needed for green hydrogen? A detailed, real-world explanation
Green hydrogen is often described as a clean fuel made from water using renewable electricity like solar systems and windmills. That sounds simple—but it raises an important and very practical question that most misses: How…
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Is green hydrogen profitable? The reality behind the hype
Green hydrogen is often called the fuel of the future—clean, abundant, and capable of transforming industries. But beyond the buzz, one critical question remains: Is green hydrogen actually profitable? The answer isn’t a simple yes…