Employing two closely spaced arrays operating at the same frequency with orthogonal polarizations and independent operations present significant potential for miniaturizing telecommunication systems.This paper presents two interleaved, tightly spaced circular patch array antennas that operate at the same frequency but with orthogonal polarizations.

INTRODUCTION: Injection drug use (IDU) is a high-risk practice for acquiring and transmitting HIV and other blood-borne infections.While many studies have been conducted in the U.S.A, Europe, and Southeast Asia, IDU is less well-recognized in sub-Saharan Africa.No studies of IDU have ever been conducted in Rwanda.This pilot study assessed the injec

Abstract Subterranean ecosystems (comprising terrestrial, semi-aquatic, and aquatic components) are increasingly threatened by human activities; however, the current network of surface-protected areas is inadequate to safeguard subterranean biodiversity.Establishing protected areas for subterranean ecosystems is challenging.First, there are technic

Selecting a suitable physical fractionation method, to investigate soil organic matter dynamics, from the plethora that are available is a difficult task.Using five different physical fractionation methods, on soils either nontreated or with a history of amendment with a range of exogenous organic matter inputs (Irish moss peat; composted horse man