David Chem, chemical engineering graduate student, holds on the right a vial of water with methyl orange dye. On the left, the water is clear after modified lignin bonds with the dye and falls to the ...

With microplastics turning up in oceans, rivers, drinking water, and even inside the human body, scientists are racing to find safe, effective ways to remove them. These tiny plastic particles, often ...

Reusing old glass jars around the house is an eco-friendly way of repurposing an item that would otherwise go into the landfill. They can be used for lots of different things, including to store food, ...

Abstract: Distributed phased arrays have recently garnered interest in applications such as satellite communications and high-resolution remote sensing. High-performance coherent distributed ...

Abstract: This letter presents a novel method for constructing a metasurface phased array antenna (MSPAA) using metasurface antenna (MSA) elements. To ensure the MSPAA has a low profile, wide ...

Given an array of integers nums sorted in non-decreasing order, find the starting and ending position of a given target value. If target is not found in the array, return [-1, -1]. You must write an ...

Imagine that you have duplicate elements with parameters in common in an array, and you need to remove or merge them, how would you do it?