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Items for "SEM"

Taxonomic appraisal of Melosira arctica Dickie and description of a new variety (Bacillariophyta)

Original material of Melosira arctica was examined. Species circumscription is emended to include detailed frustule fine structure and, for the first time, the basic morphometrics of the population from original material have been established using light and electron microscopy...

Keywords: centric diatoms, Ehrenberg collection, new taxon, sea ice, SEM

04/2006 | Botanica Marina, Walter de Gruyter

Cocconeis distans Gregory and Amphicocconeis debesi (Hustedt) De Stefano comb. nov. (Bacillariophyta), an intricate taxonomical history

We present a taxonomical revision of Cocconeis distans and C...

Keywords: Amphicocconeis debesi, biogeography, Cocconeis distans, Mediterranean Sea, SEM, TEM, ultrastructure

12/2006 | Botanica Marina, Walter de Gruyter

Machinability investigation of medium-density fibreboard

For many applications, the perceived quality of a medium-density fibreboard (MDF) is influenced by the appearance of its machined surface...

Keywords: high-magnification video, machinability, machined surface quality, medium-density fibreboard (MDF), roughness, SEM

01/2006 | Holzforschung, Walter de Gruyter

Effect of a waterproof agent on gypsum particleboard properties

This paper describes the influence of the addition of an organosilicon waterproof agent on the properties of gypsum particleboard (GPB)...

Keywords: gypsum particleboard, organosilicon waterproof agent, pH value, SEM, waterproof property, X-ray diffraction

05/2006 | Holzforschung, Walter de Gruyter

Characterization of thin water layers in pulp by tritium exchange. Part 2: Effect of refining on water absorption

The surface area of pulp increases upon refining, which also increases the quantity of bound water...

Keywords: bound water, confined water, fiber, Hydrogen bond, Isotope exchange, refining, SEM, surface area, Tritium

03/2007 | Holzforschung, Walter de Gruyter

Effect of photolysis on 17th/18th century paper

Samples of two historical papers from the late 17th and early 18th centuries were irradiated with a 350-nm ?_max light source...

Keywords: AFM, brightness, Fluorescence, historical paper, photobleaching, SEM, ultrasonic properties, UV irradiation