Electron microscopic cytochemical procedures were used to determine the cellular location of acid phosphatase in the fungus Humicola lutea grown in casein-containing medium lacking in mineral orthophosphates. In our investigations acid phosphatase in nongerminating conidia was localized on the outer side of the cell wall, in the cell wall, and on the exterior surface of the plasma membrane. The...

The purpose of the study was to experimentally test performance four types wall-mounted mechanical ventilation exhaust air outlet devices. A full-scale mock-up a segment an external wall with constructed. tested devices include gravity louver, fixed-blade louver plate, and nozzle. assessment included two experiments over airflow rate range 25–94 l/s at isothermal conditions no influencing wind:...

From the perspective of technical suitability, this paper comparatively analyzed economical thickness and suitable exterior wall thermal insulation material with highest energy saving rate building envelop, attained relationship, curves, model material. The purpose is to provide useful evidences for residential buildings optimization design wall, so that architectural designers could be inspire...

Let V be a four-dimensional real vector space with a fixed orientation. Then the wedge product can be viewed, up to a positive factor, as a canonical quadratic form of signature (3, 3) on the six-dimensional space ΛV . This gives a homomorphism from the identity component of the general linear group GL(V ) to the conformal group of the indefinite form, which is a local isomorphism. The signific...

The Hodge dual operator ∗ is one of the 3 basic operations on differential forms. (The other 2 are wedge product ∧ and exterior differentiation d.) However most treatments consider only positive-definite inner products, and there are at least 2 standard ways of generalizing this to inner products of arbitrary signature. We outline here a construction of the Hodge dual operator which works for a...