1. INTRODUCTION Bicyclic oxygen heterocycles resulting from fusion of benzene ring with
5, 6-positions of either 2H-or 4H-pyran ring system are designated as 2H-chromene (2H-1 …

The pyran ring system is widely present in the animal and plant kingdom and possesses
diverse pharmacological activities. Pyran is a six-membered oxygen heterocycle with two …

The increasing concerns about climate change and environmental emissions have led to
conservation of energy in buildings through the development of several energy-efficient …

More than 130 different compounds have been identified from over 16 species of the
Epimedium genus of the Berberidaceae family. Eight of these species have been used in the …

Autonomic cardiovascular control is impaired in hypertension, leading to a reduction in the
parasympathetic tone and to an increase in the sympathetic influences to the heart and …

Oxygenated chalcones (3a, b) and bischalcones (4a–j) have been synthesized and
evaluated for antimalarial activity against chloroquine sensitive and resistant strains of …

The primary objective of this paper is to study the combined influence of waste glass powder
and waste glass sand as a partial replacement to cement and sand respectively in an …

We present a modified age-structured SIR model based on known patterns of social contact
and distancing measures within Washington, USA. We find that population age-distribution …

Various 3, 4, 5-triarylpyrroles were synthesized and evaluated for their in vivo
antihyperglycemic activity in sucrose-loaded (SLM) and/or streptozotocin-induced (STZ) …

The adversarial effects of construction and demolition (C&D) waste on the environment are
on the increase. While materials such as metals, wood, glass and plastics are segregated …