28-09-21
Auto-disable syringes are not for needle programmes Auto-disable syringes are not…

    Auto-disable syringes are not for needle programmes     WHO and its partners recommend the use of auto-disable syringes, "bundled" with the supply of vaccines when donor dollars are used, in all mass immunization campaigns, and also…

    Auto-disable syringes are not for needle programmes     WHO and…


Gratis
27-09-21
The air conditioning trap: how cold air is heating the world The air conditioning trap: how…

The air conditioning trap: how cold air is heating the world On a sweltering Thursday evening in Manhattan last month, people across New York City were preparing for what meteorologists predicted would be the hottest weekend of the year. Over the past…

The air conditioning trap: how cold air is heating the world On a…


Gratis
27-09-21
Why is fiberglass mesh needed? Why is fiberglass mesh needed?

Why is fiberglass mesh needed? Composite sheets of fiberglass mesh for marble reinforced polycarbonate were prepared by hot compress molding. The effects of lay-up structure, lay-up angle, area density of fiberglass mesh and the thickness of PC film on…

Why is fiberglass mesh needed? Composite sheets of fiberglass mesh…


Gratis
27-09-21
Cast Iron Pipe Cast Iron Pipe

  Cast Iron Pipe     Cast iron pipes can fail in many modes which in general can be summarized into two categories: loss of strength due to the reduction of wall thickness of the pipes, and loss of toughness due to the stress concentration at the tips…

  Cast Iron Pipe     Cast iron pipes can fail in many modes which in…


Gratis
27-09-21
What is a rod seal? What is a rod seal?

What is a rod seal? There are so many different types of seals out there that it might be hard to understand all the different terminologies and functions. In this article, we give you our guide to what rod seals are, how they are manufactured and why…

What is a rod seal? There are so many different types of seals out…


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