Sturgeons in large rivers: detecting the near-extinct needles in a haystack via eDNA metabarcoding from water samples

Needles in a haystack

supplements, as in the case of vita­ min a. yet, other studies suggest that the main impact of poverty extends beyond diet and cannot be addressed through improved nutrition alone. Such is the expe­ rience from peru, where a study by the tuberculosis research group at imperial college (london, uK) has been evaluat­ ing whether dietary supplementation with vitamin a, vitamin D and zinc reduces t...

The Needles-in-Haystack Problem

We consider a new data mining problem of detecting the members of a rare class of data, the needles, that have been hidden in a set of records, the haystack. Besides the haystack, a single instance of a needle is given. It is assumed that members of the needle class are similar according to an unknown needle characterization. The goal is to find the needle records hidden in the haystack. This p...

Proteolytic needles in the cellular haystack.

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Atypical chest pain: Needles in a haystack.

A 20-year-old man presented with a 6-month history of intermittent chest pain. Initial imaging demonstrated approximately 15 sewing needles lodged in his myocardium, predominantly in the left ventricle. The patient has been referred to cardiothoracic surgery for further management. His progress will be monitored closely.

eDNA-based metabarcoding as a monitoring tool for fish in large lakes