To overcome this, we aimed to pair nontarget analysis by high-resolution mass spectrometry (HRMS) with an inexpensive and stable passive sampling media for airborne gases and particles. To this end, ...

Block-stratified cluster randomisation was used to randomly allocate the handball teams into an intervention group or a control group in a 1:1 ratio. A cluster was defined as a whole club.

Participants were recruited using stratified cluster sampling. The stratification was based on the geographical regions of China (Northeast, North, East, Central, South, Southwest, and Northwest China ...

How To Plan, Create & Optimize Content That Ranks & Converts Cheat Sheet. Ultimate Topic Cluster Checklist. Learn exactly how to plan, create, and optimize your content into clusters that not only ...

Methods In a cross-sectional study with random stratified cluster sampling, 160 clusters were chosen from various districts proportionate to the population of each district in Tehran. Following ...

A multi-stage stratified cluster sampling method was used. In the first step, the city was divided into urban and rural administrative units, and schools were selected from three categories: primary, ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

LIBERTY, Mo. (KCTV) - Concerns about a possible cancer cluster at a Liberty elementary school may soon be under the federal microscope. Congressman Sam Graves notified Health and Human Services ...

Abstract: We present a novel adaptive stratified-sampling (SS) algorithm to efficiently assess the polarization-dependent loss (PDL) induced outage probability (OP) in presence of fiber nonlinearity ...

The concept for the Ringvei Vest cluster project has still not been finalised, but there is growing optimism this will happen at the end of summer or the start of autumn, according to Upstream's ...