Propolis while also collecting water and tree resin necessary for the production of propolis. The chemical composition and nature of propolis depend on environmental conditions and harvested resources. For centuries, beekeepers assumed that bees sealed the beehive with propolis to protect the colony from the elements, such as rain and cold winter drafts. However, 20th century research revealed that bees not only survive, but also thrive, with increased ventilation during the winter months throughout most temperate regions of the world. Propolis properties may include: The composition of propolis varies from hive to hive, from district to district, and from season to
Glue semantics Glue semantics Glue semantics, or simply Glue (Dalrymple et al. 1993; Dalrymple 1999, 2001), is a linguistic theory of semantic composition and the syntax-semantics interface which assumes that meaning composition is constrained by a set of instructions stated within a formal logic (linear logic). These instructions, called "meaning constructors", state how the meanings of the parts of a sentence can be combined to provide the meaning of the sentence. Glue was developed as a theory of the syntax-semantics interface within the linguistic theory of lexical functional grammar, and most work within Glue has been conducted within that framework. LFG-Glue assumes