Indirect Evaluation of the Porosity of Waste Wood Briquettes by Assessing Their Surface Quality

Abstract The briquette porosity is a quality characteristic known to be important for combustion analysis, heat and mass transfer processes during combustion stages, determination of effective thermal conductivity or other related properties. This paper describes a method to quantify the briquette porosity by some surface roughness parameters that can be useful for alternative, inexpensive and at hand evaluations. Porosity of briquettes manufactured with a hydraulic press from waste wood from secondary processing was calculated with three methods suggested in the literature for wood; of these, one was adapted here for a wet porosity model (called “general relation”) proposed for wood briquettes. Briquettes density was obtained by using two stereometric methods and a liquid displacement method. Correlations were examined between porosity, surface roughness parameters and density of briquettes. Very strong correlations with surface roughness were identified for porosity calculated with all three methods, when density was measured by one of the stereometric methods. These correlations can serve as a method to indirect evaluation of the briquettes porosity by measuring the surface roughness.

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Utilizing Waste Wood

Scientific American ◽

10.1038/scientificamerican01091909-20supp ◽

1909 ◽

Vol 67 (1723supp) ◽

pp. 20-22

Author(s):

F. P. Veitch

Keyword(s):

Waste Wood

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The specification of surface quality—quo vadis?

Production Engineer ◽

10.1049/tpe.1972.0028 ◽

1972 ◽

Vol 51 (5) ◽

pp. 171 ◽

Cited By ~ 5

Author(s):

J. Halling

Keyword(s):

Surface Quality ◽

Quo Vadis

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Current uses of intracranial vessel wall imaging for clinical practice: a high-resolution MR technique recently available

Arquivos de Neuro-Psiquiatria ◽

10.1590/0004-282x20200044 ◽

2020 ◽

Vol 78 (10) ◽

pp. 642-650

Author(s):

Felipe Torres PACHECO ◽

Luiz Celso Hygino da CRUZ JUNIOR ◽

Igor Gomes PADILHA ◽

Renato Hoffmann NUNES ◽

Antônio Carlos Martins MAIA JUNIOR ◽

...

Keyword(s):

Clinical Practice ◽

Vessel Wall ◽

Vascular Diseases ◽

Vascular Wall ◽

Vessel Wall Imaging ◽

Clinical Settings ◽

Direct Evaluation ◽

Intracranial Vessel ◽

Indirect Evaluation ◽

Wall Imaging

ABSTRACT Intracranial vessel wall imaging plays an increasing role in diagnosing intracranial vascular diseases. With the growing demand and subsequent increased use of this technique in clinical practice, radiologists and neurologists should be aware of the choices in imaging parameters and how they affect image quality, clinical indications, methods of assessment, and limitations in the interpretation of these images. Due to the improvement of the MRI techniques, the possibility of accurate and direct evaluation of the abnormalities in the arterial vascular wall (vessel wall imaging) has evolved, adding substantial data to diagnosis when compared to the indirect evaluation based on conventional flow analyses. Herein, the authors proposed a comprehensive approach of this technique reinforcing appropriated clinical settings to better use intracranial vessel wall imaging.

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Improved surface quality of rotation symmetric structures by excimer laser micromachining

10.2351/1.5059603 ◽

1997 ◽

Cited By ~ 1

Author(s):

H. K. Tönshoff ◽

C. Graumann ◽

M. Rinke ◽

P. Lonergan ◽

J. Wais

Keyword(s):

Surface Quality ◽

Excimer Laser ◽

Laser Micromachining ◽

Rotation Symmetric ◽

Symmetric Structures

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Determination of prognostic effectiveness of indices indirect evaluation of circulation in relation to the lower extremities of the treatment of patients with heel bone fractures

The Journal of scientific articles Health and Education millennium ◽

10.26787/nydha-2226-7425-2017-19-1-16-25 ◽

2017 ◽

Vol 19 (1) ◽

pp. 16-25

Author(s):

N.G. Kulik ◽

◽

V.V. Khominets ◽

A.A. Ostapchenko ◽

M.V. Rezvantsev ◽

...

Keyword(s):

Bone Fractures ◽

Lower Extremities ◽

Heel Bone ◽

Indirect Evaluation

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AL 468 ALLOY

Alloy Digest ◽

10.31399/asm.ad.ss0597 ◽

1995 ◽

Vol 44 (6) ◽

Keyword(s):

Stainless Steel ◽

Corrosion Resistance ◽

High Temperature ◽

Physical Properties ◽

Tensile Properties ◽

Oxidation Resistance ◽

Surface Quality ◽

Heat Treating ◽

Temperature Performance ◽

Chromium Stainless Steel

Abstract AL 468 is an 18% chromium stainless steel with dual stabilization by titanium and columbium. Small angular carbonitrides of both titanium and columbium are randomly dispersed, but develop improved surface quality, strength, and oxidation resistance when compared to Type 439. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-597. Producer or source: Allegheny Ludlum Corporation.

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