scholarly journals Notes from the Packaging Laboratory: Hot Tack Measurements of Thin Sealant Films

EDIS ◽  
1969 ◽  
Vol 2003 (17) ◽  
Author(s):  
Kenneth R. Berger ◽  
Matthew Knoelke ◽  
Bruce Welt
Keyword(s):  
Ethylene Vinyl Acetate ◽  
Test Strip ◽  
Wave Pattern ◽  
Sine Wave ◽  
Influential Factors ◽  
Interactive Effects ◽  
Biological Engineering ◽  
Engineering Department ◽  
Die Temperature ◽  
Sample Width

Sample preparation can greatly influence the results of laboratory testing of packaging sealant strength. Factors such as test strip width, edge uniformity, sealing die temperature and die load are recognizable variables to control. A design of experiments approach was used to explore the rank importance of these factors and any interactive effects that may occur. A generally well-behaved ethylene vinyl acetate (EVA) sealant on a high density polyethylene (HDPE) film was used for these tests. Experimental results indicate that sample width, die temperature and die pressure are the most influential factors. Unexpectedly, edge effects, namely a regular sine wave pattern and a generally random irregular edge had little influence on hot tack results. This document is ABE340, one of a series of the Agricultural and Biological Engineering Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. First published December 2002.  https://edis.ifas.ufl.edu/ae211

A Multiscale Filtering Explanation of Gradient Induction and Remote Brightness Induction Effects: A Reply to Logvinenko (2003)

Perception ◽  
2005 ◽  
Vol 34 (7) ◽  
pp. 793-802 ◽  
Author(s):  
Barbara Blakeslee ◽  
Mark E McCourt
Keyword(s):  
Strong Evidence ◽  
Test Strip ◽  
Spatial Filter ◽  
Brightness Variation ◽  
Sine Wave ◽  
Difference Of Gaussians ◽  
Limited Class ◽  
Homogeneous Test ◽  
Multiscale Filtering ◽  
Filtering Approach

Grating induction is a brightness effect in which a counterphase spatial brightness variation (a grating) is induced in a homogeneous test strip that is surrounded by an inducing luminance grating (McCourt, 1982 Vision Research22 119–134). Moulden and Kingdom (1991 Vision Research31 1999–2008) introduced an interesting variant of grating induction (sometimes referred to as gradient induction) in which multiple strips of either a linear luminance ramp or a sine-wave grating were interlaced with strips of homogeneous luminance. We (Blakeslee and McCourt, 1999 Vision Research39 4361–4377) demonstrated that a simple multiscale filtering explanation could account for grating induction. Recently, however, Logvinenko (2003 Perception32 621–626) presented several arguments impugning the adequacy of spatial filtering approaches to understanding brightness induction in gradient induction stimuli. We propose that Logvinenko's arguments apply only to a limited class of filtering models, specifically those which employ only a single spatial filter. To test this hypothesis we modeled gradient induction stimuli as a function of inducing contrast, as well as Logvinenko's (2003) remote induction stimulus, using our multiscale oriented difference-of-Gaussians (ODOG) model (Blakeslee and McCourt 1999). The ODOG model successfully predicts the appearance of the inducing strips and the homogeneous test strips in the gradient induction stimuli and the appearance of the test patches in the remote induction stimuli. These results refute Logvinenko's (2003) claims, and we interpret them as providing strong evidence for a multiscale filtering approach to understanding both gradient induction and remote brightness induction effects.

Sine-wave pattern on the electrocardiogram and hyperkalaemia

2007 ◽  
Vol 8 (9) ◽  
pp. 729-731 ◽  
Author(s):  
Virginia Scarabeo ◽  
Maria Stella Baccillieri ◽  
Attilio Di Marco ◽  
Fabio de Conti ◽  
Francesco Contessotto ◽  
...  
Keyword(s):  
Wave Pattern ◽  
Sine Wave

Study on the effect of processing conditions on the impact strength of PP/SEBS/PC ternary blends using Taguchi experimental analysis

2011 ◽  
Vol 31 (2-3) ◽  
Author(s):  
Omid Moini Jazani ◽  
Ahmad Arefazar ◽  
Seyyed Hassan Jafari ◽  
Mohammad Reza Saeb
Keyword(s):  
Impact Strength ◽  
Processing Condition ◽  
Point Of View ◽  
Interactive Effects ◽  
Processing Conditions ◽  
Ternary Blends ◽  
Screw Speed ◽  
Die Temperature ◽  
Blending Sequence ◽  
The Impact

Abstract In this study, nine ternary blends of polypropylene (PP)/poly [styrene-b-(ethylene-co butylene)-b-styrene] tri-block copolymer (SEBS)/polycarbonate (PC) were produced at different processing conditions through twin screw extruder. Accordingly, die temperature, screw speed, and blending sequences were altered based on L9 Taguchi experimental design as indications of processing variables. Consequently, the impact strength of each produced sample is considered as the responding variable. Analyzing two important aspects, namely main and interactive effects by using Taguchi analysis, was the especial point of view in our contribution; as a result, not only was the PP/SEBS/PC ternary system studied for the first time, but the SEBS-g-MAH compatibilizer also showed sufficient effects on morphology development. It was observed that the impact strength of PP/SEBS/PC ternary blends is not affected by die temperature significantly, whereas screw speed and blending sequence have had effective impacts. Besides, the optimum processing condition, which is proportional to the highest value of impact strength, is recommended through the mentioned ternary blends. These results are also confirmed while applying image analysis on morphology micrographs.

scholarly journals Retrofitting a Traditional In-ground Sprinkler Irrigation System for Microirrigation of Landscape Plants

EDIS ◽  
1969 ◽  
Vol 2002 (6) ◽  
Author(s):  
Dorota Z. Haman ◽  
Michael D. Dukes ◽  
Sydney G. Park-Brown
Keyword(s):  
Cooperative Extension ◽  
Irrigation System ◽  
Sprinkler Irrigation ◽  
Cooperative Extension Service ◽  
Extension Service ◽  
Biological Engineering ◽  
University Of Florida ◽  
Landscape Plants ◽  
Agricultural Sciences ◽  
Engineering Department

This document is ABE324, one of a series of the Agricultural and Biological Engineering Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. First published October 2002. https://edis.ifas.ufl.edu/ae222

scholarly journals An Inexpensive Device for Multiple Depth Sampling of Groundwater Quality in Cohesionless Aquifers

EDIS ◽  
1969 ◽  
Vol 2002 (1) ◽  
Author(s):  
Wendy D. Graham
Keyword(s):  
Groundwater Quality ◽  
Cooperative Extension ◽  
Cooperative Extension Service ◽  
Extension Service ◽  
Publication Date ◽  
Original Publication ◽  
Biological Engineering ◽  
University Of Florida ◽  
Agricultural Sciences ◽  
Engineering Department

This document is CIR943, one of a series of the Agricultural and Biological Engineering Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date May 1991. Reviewed July 2002.

scholarly journals Small Farmer's Resources for Safety

EDIS ◽  
1969 ◽  
Vol 2002 (6) ◽  
Author(s):  
Carol J. Lehtola ◽  
Charles M. Brown
Keyword(s):  
Cooperative Extension ◽  
Cooperative Extension Service ◽  
Extension Service ◽  
Biological Engineering ◽  
University Of Florida ◽  
Agricultural Sciences ◽  
Engineering Department

This document is ABE330, one of a series of the Agricultural and Biological Engineering Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. First published October 2002. https://edis.ifas.ufl.edu/ae228

scholarly journals Rhythm of the Seasons: Planting Seeds of Safety, Harvesting Grains of Hope -- A Lesson Plan for Farm Safety Audiences

EDIS ◽  
1969 ◽  
Vol 2003 (12) ◽  
Author(s):  
Carol J. Lehtola ◽  
Charles M. Brown
Keyword(s):  
Cooperative Extension ◽  
Lesson Plan ◽  
Cooperative Extension Service ◽  
Extension Service ◽  
Biological Engineering ◽  
University Of Florida ◽  
Farm Safety ◽  
Agricultural Sciences ◽  
Engineering Department

This lesson plan is designed as the basis for the IMBY Farm and Home Hazard Workshop. IMBY stands for “In My Back Yard” — that is where safety should begin. The lesson plan gives direction for the educational part of the workshop. This document is CIR 1437, one of a series of Florida AgSafe, a program in the Agricultural and Biological Engineering Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences (IFAS), University of Florida. First published April 2003. https://edis.ifas.ufl.edu/ae254

scholarly journals Water Management District Considerations for Florida Citrus Groves

EDIS ◽  
1969 ◽  
Vol 2002 (9) ◽  
Author(s):  
Brian Boman ◽  
Larry Parsons
Keyword(s):  
Water Management ◽  
Cooperative Extension ◽  
Cooperative Extension Service ◽  
Extension Service ◽  
Publication Date ◽  
Biological Engineering ◽  
University Of Florida ◽  
Citrus Groves ◽  
Engineering Department ◽  
Florida Citrus

This is document No. CH192 and Circular 1422, one of a series of the Agricultural and Biological Engineering Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Publication date: September 2002.

scholarly journals Notes from the Packaging Laboratory: Polylactic Acid -- An Exciting New Packaging Material

EDIS ◽  
1969 ◽  
Vol 2003 (17) ◽  
Author(s):  
Melisa Balkcom ◽  
Bruce Welt ◽  
Kenneth Berger
Keyword(s):  
Polylactic Acid ◽  
Renewable Resources ◽  
Cooperative Extension ◽  
Cooperative Extension Service ◽  
Packaging Material ◽  
Extension Service ◽  
Biological Engineering ◽  
University Of Florida ◽  
Agricultural Sciences ◽  
Engineering Department

Headway is being made with a polymer called Polylactic Acid (PLA), an affordable, recyclable, innovative packaging material made from renewable resources. This document is ABE339, one of a series of the Agricultural and Biological Engineering Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. First published December 2002. https://edis.ifas.ufl.edu/ae210

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