Book Description
Understand and utilize the latest flip chip technology

High Performance Flip Chip Technologies fully covers the new lowcost flip chip processes and material systems that make the manufacture of miniature consumer electronic devices possible. ... Read more

Book Description
This digital document is an article from Circuits Assembly, published by UP Media Group, Inc. on September 1, 2003. The length of the article is 1846 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

Citation Details
Title: The latest in underfill for advanced chip assembly: is a low-cost, surface-mount-compatible process possible?(Materials)
Author: James Jian Zhang
Publication: Circuits Assembly (Magazine/Journal)
Date: September 1, 2003
Publisher: UP Media Group, Inc.
Volume: 14Issue: 9Page: 24(3)

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Book Description
This digital document is an article from Circuits Assembly, published by Thomson Gale on February 1, 2007. The length of the article is 1938 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

Citation Details
Title: A mixed technology reliability assessment: using a mix of lead and Pb-free components, the authors found failure similar mechanisms for SAC and SnPb eutectic solder.
Author: Lucian Kasprzak
Publication: Circuits Assembly (Magazine/Journal)
Date: February 1, 2007
Publisher: Thomson Gale
Volume: 18Issue: 2Page: 64(5)

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Book Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on June 15, 1996. The length of the article is 6101 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: Microcellular semicrystalline polymers such as poly(ethylene terephthalate) show great promise for engineering applications because of their unique properties, particularly at higher densities. Recent studies have shown that some high density microcellular polymers have longer fatigue lives and/or equivalent strengths relative to the neat polymer. Relatively few microcellular processing studies of semicrystalline polymers have been presented. In general, semicrystalline polymers are relatively difficult to microcellular process compared to amorphous polymers. In this paper, the microcellular processing of poly(ethylene terephthalate) in the amorphous and semicrystalline states is studied in order to quantify the processing differences. Particular emphasis is given to the cell growth stage of microcellular processing comparing the processing characteristics of semicrystalline and amorphous PET. Based on the results of this study, a number of critical process parameters are identified. Another goal of this analysis is to derive robust microcellular process design strategies for the amorphous and semicrystalline materials. Process design strategies are given for both semicrystalline and amorphous PET.

Citation Details
Title: A microcellular processing study of poly(ethylene terephthalate) in the amorphous and semicrystalline states, part II, Cell growth and process design.
Author: Daniel F. Baldwin
Publication: Polymer Engineering and Science (Refereed)
Date: June 15, 1996
Publisher: Society of Plastics Engineers, Inc.
Volume: v36Issue: n11Page: p1446(8)

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Book Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on March 15, 1995. The length of the article is 5721 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: Microcellular plastics are cellular polymers characterized by cell densities greater than [10.sup.9] cells/[cm.sup.3] and cells smaller than 10 [[micro]meter]. One of the critical steps in the continuous production of microcellular plastics is the promotion of high cell nucleation rates in a flowing polymer matrix. These high nucleation rates can be achieved by first forming a polymer/gas solution followed by rapidly decreasing the solubility of gas in the polymer. Since, in the processing range of interest, the gas solubility in the polymer decreases as the pressure decreases, a rapid pressure drop element, consisting of a nozzle, has been employed as a continuous microcellular nucleation device. In this paper, the effects of the pressure drop rate on the nucleation of cells and the cell density are discussed. The experimental results indicate that both the magnitude and the rate of pressure drop play a strong role in microcellular processing. The pressure phenomenon affects the thermodynamic instability induced in the polymer/gas solution and the competition between cell nucleation and growth.

Citation Details
Title: Effect of pressure drop rate on cell nucleation in continuous processing of microcellular polymers.
Author: Chul B. Park
Publication: Polymer Engineering and Science (Refereed)
Date: March 15, 1995
Publisher: Society of Plastics Engineers, Inc.
Volume: v35Issue: n5Page: p432(9)

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Book Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on June 15, 1996. The length of the article is 6340 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: Microcellular semicrystalline polymers such as poly(ethylene terephthalate) show great promise for engineering applications because of their unique properties, particularly at higher densities. Recent studies reveal some high density microcellular polymers have longer fatigue lives and/or equal strengths to the neat polymer. Relatively few microcellular processing studies of semicrystalline polymers have been presented. In general, semicrystalline polymers are relatively difficult to microcellular process compared to amorphous polymers. In this paper and a companion paper, the microcellular processing of poly(ethylene terephthalate) in the amorphous and semicrystalline states is studied in order to quantify the processing differences. The microcellular processing steps addressed in this paper include gas/polymer solution formation and microvoid nucleation. Particular emphasis is given to microvoid nucleation comparing the processing characteristics of semicrystalline and amorphous materials. Moreover, this study identifies a number of critical process parameters. In general, the semicrystalline materials exhibit ten to one thousand times higher cell nucleation densities compared with the amorphous materials, resulting from heterogeneous nucleation contributions. The amorphous materials show a strong dependence on cell density, while the semicrystalline materials show a weaker dependence. Moreover, classical nucleation theory is not adequate to quantitatively predict the effects of saturation pressure on cell nucleation for either the amorphous or semicrystalline polyesters. Both the semicrystalline and amorphous materials exhibit constant nucleation cell densities with increasing foaming time. Foaming temperatures near the glass transition are found to influence the cell density of the amorphous polyesters, indicating some degree of thermally activated nucleation. Furthermore, classical nucleation theory is not adequate to predict the cell density dependence on foaming temperature. Similar to the amorphous polyesters above the glass transition temperature, nucleation in the semicrystalline materials is found to be independent of the foaming temperature.

Citation Details
Title: A microcellular processing study of poly(ethylene terephthalate) in the amorphous and semicrystalline states, part I, Microcell nucleation.
Author: Daniel F. Baldwin
Publication: Polymer Engineering and Science (Refereed)
Date: June 15, 1996
Publisher: Society of Plastics Engineers, Inc.
Volume: v36Issue: n11Page: p1437(9)

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Book Description
This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on May 1, 1996. The length of the article is 6410 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available in your Amazon.com Digital Locker immediately after purchase. You can view it with any web browser.

From the author: A new processing system for the extrusion of microcellular polymer sheets is presented. Specifically, the detailed design of a shaping and cell growth control system is discussed in the context of an overall extrusion system design with particular emphasis on the system level functional requirements of cell nucleation, cell growth, and shaping. The principle of the basic extrusion system design is to shape a nucleated polymer/gas solution flow under pressure and accurate temperature control. In this way, the initial cell growth is controlled so as to prevent degradation of the nucleated cell density during shaping. Two foaming die designs for satisfying the initial shaping and cell growth requirements are presented. Critical experiments are then presented which verified the concept of shaping a nucleated polymer/gas solution. Moreover, these experiments demonstrated the feasibility of the overall microcellular polymer sheet extrusion system design.

Citation Details
Title: An extrusion system for the processing of microcellular polymer sheets: shaping and cell growth control.
Author: Daniel F. Baldwin
Publication: Polymer Engineering and Science (Refereed)
Date: May 1, 1996
Publisher: Society of Plastics Engineers, Inc.
Volume: v36Issue: n10Page: p1425(11)

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Customer Reviews (1)

Excellent Scholarship
Joyce Baldwin did an excellent job on historic research and culture, and provides excellent analysis of interpretation of the Book of Daniel and what problems arise. A must read for anyone interested in Bible History and/or Prophecy. ... Read more

Book Description

Customer Reviews (2)

The Past of Future
An Ode to Roger Fenton's Valley of the Shadow of Death by Ayul M Zamir

The photograph: pale, grainy, and fading
And on the ground, you see them, where they solemnly lie,
like boulders of an ancient river bed
that has since long dried.
Strewn across the valley floor:
innumerable spheres--dark and silent--
spent up cannon balls.

On this desolate land, once, there was a great war, and
many battles, brave men had marched here to fight.
And now across that prized land,
that men had, then, fought so hard to conquer,
now, only rocks and abandoned metal lie.
And not a single soul is in sight

All of the same shape and size, these
round, metallic, man-made spheres.
Can almost feel the texture of those in a sharp focus,
so many lie scattered far and near.
Wonder: what color impressive uniforms,
did the soldiers on march to that war, then, wear.

Looking at this eternal photograph,
you can almost hear that distant rumble.
And feel the ground beneath your feet shake
under the recoil of giant cannons when they thunder.
When volley after volley of heavy metal
was sent soaring high into the air,
both sides knew another battle had begun--
in one more war that was just, honorable, and fair.

And all that metal,
once laboriously molten and carefully cast,
hurled into the air
with each soul shaking blast.
Dispatched, flying across
to land on the enemy--
to hit and hurt him
before he is near enough to be even seen.

That shocking power unleashed on the enemy
That flying metal, now, on its downward journey
Lethal arches drawn by metal balls--
as they, now, race down to find bodies
in that final,
awesome, terrorizing, whistling freefall.

You could trace back their long paths
to earlier fought wars,
and well thought out, rehearsed plans.
Emotions ran high:
military honor, national pride, old resentments,
and long held anger
--thoughtfully, however, on the map, and
carefully--precise lines were drawn.

"We feel just and right about it.
"Conquest is ours in the end.
"That is our Nation's destiny.
"Ours is that God granted fate."
And with that righteous inner strength,
new perfect plans were made.

And a minute ago, in final brave acts,
in the midst of rousing cheers,
they fired the guns
--could feel the ground shake
--they swaggered lightly:
the shocked and awed enemy
was about to meet his fate.

Hot metal balls are landing:
see that mud erupting, and sand flying;
and desperately in all directions--
our wretched enemy is running blind.

"Get ready to charge the stunned-softened enemy, now, boys;
use whatever: knives, bayonets, swords, sticks, hands, or dogs;
glorious victory is ours--
and on our side is the God."

"Of course, few of our brave men too
--honorable mothers--
are left with severed limbs and torn flesh.
And, yes, irreparable damage to hands and feet.
But hear the Heaven greeting those
who fell in the last final battle;
for them, now, let us cheer and ring in the victory."

"And thanks of a grateful country
to those who, now, in the mother Earth's womb
lie for eternity.
At peace--and like in their mothers' laps
lie breast fed, pink, sleeping babies.

Roger Fenton's hundred and fifty years old photograph:
from 1855, of the Crimean war.
An eternal testimony,
a little pale and grainy,
silent, lifeless, spent up cannon balls
strewn across the land
as far as the eyes can see
in the "Valley of the Shadow of Death"
in the past of the future.

A Beautiful Tribute to a Pioneer Photographer and his Art
Though Roger Fenton may not be a name known to the general public, he certainly is a hero among those who have devoted their lives to the art of photography.Working in the mid-nineteenth century with a novel invention - the camera - Fenton was probably the first to see the possibilities of photography as art.

This magnificent volume shares 85 of the artist's finest photographs, including moody views of the buildings of London, Moscow, Kiev, landscapes of countrysides, delicately composed still lifes and even some of his war photographs, works which compare to Matthew Brady's Civil War photographs.

The accompanying essays and comments are not only highly informative, they also are written with a reader in mind!This is a beautiful and important book about an under appreciated artist about whom we all should know more.Highly recommended, and well worth the price. Grady Harp, August 05 ... Read more