Porosity - SlideShare
16/03/2016· Porosity: The porosity or voids is defined as the ratio of the void volume to bulk volume. 𝜀 =(VB −𝑉P )/ Vb =1- Vp / Vb Void volume = Vb – Vp Porosity is expressed in percent, 𝜀 × 100 Vb=Bulk volume Vp=True volume 5. Problems: I. A sample of calcium oxide powder with a true density of 3.203 and weighing 131.3 gm was found to have a bulk volume of 82cm3 whenPorosity Of Powders Ppt Presentation,PowerPoint Presentation. 2016-11-16 · Porosity, void and bulk volume. Packing and flow of powders are important for: Impacting the size of container required for packaging The flow of granulations The efficient of the filling apparatus during tabletting Encapsulation process.Porosity - SlideShare,10/09/2014· Porosity • Porosity is a measure of the void space in rock, hence, measures how much HC in rock • Porosity φ = Vp/Vb = (Vb-Vm)/Vb; Vb = Vp + Vm – theoretically, φ varies from 0% - 47.6% – In practice, φ varies between 3% and 37% • Porosity is a function of particle size distribution: – Framework materials (sandstone) – high φ – Interstitial materials (shaly-sand) –porosity of powders ppt presentation,You are here: Home > porosity of powders ppt presentation. A Comparative Study of the Compaction Properties of Binary and, BD is bulk density of the powder, and TD is powder, presented as mean ± SD., Fig 3: Effect of excipient mixture ratio on the porosity of binary and bilayer... >>Get Quotation. IJCT 6(1) 48-54.pdf. Porous gas diffusion electrodes are used inPorosity Powerpoint | PDF | Porosity | Applied And,,Porosity powerpoint - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. Porosity powerpointPPT – POROSITY PowerPoint presentation | free to download,,POROSITY Many slides contain more detailed notes that may be shown using the Notes Page View Acknowledgments Dr. Walt Ayers, PETE 311, Fall 2001 NExT PERF Short, – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow
porosity of powders presentation - zswtorun
This presentation describes the importance of interactions between density, porosity, for measuring SG of finely milled powders These are also used for measuring Relative Density, porosity and permeability measurements show whether a body is fully dense (as inPPT – Granules PowerPoint presentation | free to view - id,,Granules have higher porosity than powders, To improve the compressibility of powders. The granulation of toxic materials will reduce the hazard of generation of toxic dust, which may arise during the handling of the powders. Materials, which are slightly hygroscope, may adhere form a cake if stored as a powder. 5. Technologically, granules are used according to two visions ;PowerPoint Presentation,Porosity ( ) for example: q c = v c Later we will define the dispersion coefficient in terms of v and therefore we insert now: Assume 1D flow qx s and a line source Case 1 Advective flux Dispersive flux Assume 1D flow qx s D is the dispersion coefficient. It includes the effects of dispersion and diffusion. Dx is sometimes written DL and called the longitudinal dispersion coefficient.Powders ppt - SlideShare,27/05/2013· Powders ppt. 2. Introduction 2 Powders are the simplest dosage forms and the basis of many other solid dosage forms such as tablets, capsules, etc. Powders were originally designed as a convenient mode of administering hardPowerPoint Presentation,Mix powders to get “alloy” Iron alloys most common, also Bronze Compaction Powder is pressed into a “green compact” 20,000-100,000psi pressure Still very porous, ~70% density May be done cold or warm (higher density) Sintering Controlled atmosphere: no oxygen Heat to .75*Tmelt Particles bind together Part shrinks in size Density increases, up to 95% Strength ~=~ DensityPowerPoint Presentation,Soil Physical Properties Color Texture Density (particle density vs. bulk density) Pore space (porosity) Structure Aggregate stability Physical properties are important 1) Control plant growth through influence on: Objectives Know what color tells you about a soil Describe the concept of soil texture and its importance Use the textural triangle to determine a soil’s textural class
powders and granules presentation - slideshare.net
Slide 4 of 86 of powders and granules presentationPowerPoint Presentation,Test for porosity: Take a strand of several hairs from four different areas of the head: the front hairline, the temple, the crown, and the nape. Hold the strands securely with one hand and slide the thumb and forefinger of the other hand from the ends to the scalp. If the hair feels smooth, the cuticle is compact, dense, and hard and the hair has low porosity. If you feel roughness, it has,PowerPoint Presentation,Soil Formation and Generalized Soil Profile Soil Horizons and Profiles Principal Soil Horizons Soils of the U.S. Typical Soil Profile (Spodosol) Ultisols – Georgia Clay Soil Characteristics PowerPoint Presentation Main Soil Textures Soil Formation vs. Soil Erosion Topsoil Erosion Is a Serious Problem in Parts of the World Dust Bowl of the 1930’s China’s Dust Storms - 2006Porosity Of Powders Ppt Presentation,Porosity Of Powders Ppt Presentation Free fat, surface fat and dairy powders: interactions 2007-7-17 · heat treatments, homogenization, drying and storage) on physical properties of fat-filled powders (oxidation, wettability, dispersibility, solubility and flowing properties). free fat / surface fat / spray drying / fat-filled dairy powders / functional propertiesPowerPoint Presentation,Porosity ( ) for example: q c = v c Later we will define the dispersion coefficient in terms of v and therefore we insert now: Assume 1D flow qx s and a line source Case 1 Advective flux Dispersive flux Assume 1D flow qx s D is the dispersion coefficient. It includes the effects of dispersion and diffusion. Dx is sometimes written DL and called the longitudinal dispersion coefficient.PowerPoint Presentation,Mix powders to get “alloy” Iron alloys most common, also Bronze Compaction Powder is pressed into a “green compact” 20,000-100,000psi pressure Still very porous, ~70% density May be done cold or warm (higher density) Sintering Controlled atmosphere: no oxygen Heat to .75*Tmelt Particles bind together Part shrinks in size Density increases, up to 95% Strength ~=~ Density
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Soil Physical Properties Soil Physical Properties Color Texture Density (particle density vs. bulk density) Pore space (porosity) Structure Aggregate stability Physical properties are important 1) Control plant growth through influence on: Objectives Know what color tells you about a soil Describe the concept of soil texture and its importance Use the textural triangle to determine apowders and granules presentation - slideshare.net,Slide 4 of 86 of powders and granules presentationPowerPoint Presentation,Physical Properties Texture Structure Porosity Bulk Density Temperature Aeration Texture Sand Largest particle size: 0.05 – 2.0 µm Silt Middle particle size: 0.002 – 0.05 µm Clay Smallest particle size: < 0.002 µm Texture Drives moisture holding capacity Clay holds most water Sand holds least water Factor in ease of erosion Sands are most easily eroded Structure HowPowerPoint Presentation,Test for porosity: Take a strand of several hairs from four different areas of the head: the front hairline, the temple, the crown, and the nape. Hold the strands securely with one hand and slide the thumb and forefinger of the other hand from the ends to the scalp. If the hair feels smooth, the cuticle is compact, dense, and hard and the hair has low porosity. If you feel roughness, it has,Porosity Effect on Physical and Mechanical Properties of,,28/02/2017· The porosity of pervious concrete ranges from 15% to 35%. The most important properties of pervious concrete pavement were analyzed: compressive strength, flexural strength, splitting tensile strength, frost resistance and abrasion resistance. Different types of aggregates (natural, recycled), different fractions and granulometric composition of aggregates, differentPowerPoint Presentation,Porosity. 4. Abrasion ( Los Anglos test ) 5. Axial load (unconfined compression test) What ? Test results for each site What ? (continued) Conclusions are as follows Rocks strength ranges from weak to strong with no very strong or very weak Majority of rocks are sedimentary with some metamorphic ones. Absorption values are relatively small Site A Tests Results Test and
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Soil Formation and Generalized Soil Profile Soil Horizons and Profiles Principal Soil Horizons Soils of the U.S. Typical Soil Profile (Spodosol) Ultisols – Georgia Clay Soil Characteristics PowerPoint Presentation Main Soil Textures Soil Formation vs. Soil Erosion Topsoil Erosion Is a Serious Problem in Parts of the World Dust Bowl of the 1930’s China’s Dust Storms - 2006,,,,,
