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Unisem Introduces New High Density Leadframe Based Packaging Using Technology developed by TL Li (Patent Pending)

June 8, 2010 By vani Leave a Comment

KUALA LUMPUR, Malaysia–(Business Wire)–
Unisem today announced the introduction of a new high density leadframe
packaging technology, the Leadframe Grid Array (LFGA). This latest offering,
developed by TL Li, the founder and major shareholder of QPL International
Holdings Limited (“QPL”), and pending for patent, is a solution that offers I/O
densities traditionally only found in ball grid array packages, yet it uses a
much more cost effective material set.

As consumer electronics continue to become more and more complex, semiconductor
manufacturers also continue to push the demand for a reduced cost packaging
solution. The LFGA package provides the best of both worlds with a high density,
fully populated array of I/O`s attached to a leadframe based on their patented
leadframe design and etched leadframe process. In fact the routing density of
the LFGA makes it a great replacement for a 2 layer FBGA package.

Other key benefits of the LFGA package are its shorter bond wire lengths
compared to standard QFN packaging which not only helps improve the electrical
performance, but also helps to reduce material costs. Package footprint
reduction is also benefit with the LFGA package`s ability to take a 10×10, 72
lead QFN package down to 5.5 squared body size. Finally, the LFGA offers a
higher MSL level due to the absence of organic materials in the interface of
mold compound and leadframe.

“I believe this is another sensational invention after the QFN package that
currently dominates the packaging world. This package offers a better footprint
with higher IO density, and better thermal and electrical performance. It is
also thinner with higher IO and most importantly, offers a much better yield at
front end assembly”, stated TL Li, the founder and major shareholder of QPL, who
is also its chairman and one of its executive directors.

“We are very excited about the LFGA packaging technology our development teams
have created with this technology developed by TL Li”, stated C.H. Ang, Group
COO of the Unisem Group. “We have seen a definitive market need for a higher
I/O, lower cost packaging solution and the LFGA package meets this requirement
perfectly”, continued Ang.

The LFGA package is available now in small quantities for customer evaluation.

About Unisem

Unisem is a global provider of semiconductor assembly and test services for many
of the world`s most successful electronics companies. Unisem offers an
integrated suite of packaging and test services such as wafer bumping, wafer
probing, wafer grinding, a wide range of leadframe and substrate IC packaging,
wafer level CSP and RF, analog, digital and mixed-signal test services. Our
turnkey services include design, assembly, test, failure analysis, and
electrical and thermal characterization. With approximately 9,000 employees
worldwide, Unisem has factory locations in Ipoh, Malaysia; Wales, United
Kingdom; Chengdu, People`s Republic of China; Batam, Indonesia and Sunnyvale,
USA. The company is headquartered in Kuala Lumpur, Malaysia. For more
information about Unisem, please visit www.unisemgroup.com.

Unisem Group
Chris Stai, 408-331-7325
cstai@unisemgroup.com

Filed Under: International News Tagged With: Array Packages, Ball Grid Array, best of both worlds, Bond Wire, Densities, Electrical Performance, Executive Directors, high density, International Holdings Limited, kuala lumpur malaysia, Malaysia business, Material Costs, Mold Compound, msl, organic materials, Packaging Solution, Packaging Technology, Patent Pending, Semiconductor Manufacturers, using technology

Proper calcium supplement early in life key to lifelong bone health

May 14, 2010 By vani Leave a Comment

Washington, May 14 (ANI): A new study has revealed that not only is calcium required for strong and healthy bones, it could also play a vital role in determining bone health for life.

The new research from North Carolina State University conducted an 18-day trial involving 24 newborn pigs, half of which were fed a calcium deficient diet, and the other half, calcium rich diet.

They found that the bone densities in the pigs that were fed the calcium-deficient diet were lower as compared to that of the other half. Moreover, certain stem cells in bone marrow, in the calcium-deficient piglets appeared to have already been programmed to become fat cells instead of bone-forming cells.

However, blood tests didn”t indicate any difference in levels of the hormonal form of vitamin D, which regulates the amount of calcium circulating in the blood of older children and adults. Dr. Chad Stahl, an associate professor of animal science who led the study, said this suggests that calcium regulation in newborns isn”t dependent on vitamin D.

Because these programmed mesenchymal stem cells replicate to provide all the bone-forming cells for an animal”s entire life, very early calcium deficiency may have predisposed the piglets to have bones that contain more fat and less mineral. That could make those pigs more prone to osteoporosis and obesity in later life, said Stahl.

The researchers plan to extend this study to see if the calcium deficiency in early life in the piglets also has an impact on sexual maturity.

The researchers are using pigs as a model for human health because pigs and humans are similar when it comes to bone growth and nutrition. Pigs are one of the few animals known to experience bone breaks related to osteoporosis, Stahl said.

“For me,” Stahl said, “the biggest message is that calcium nutrition, or mineral nutrition as a whole, needs to be a priority from day one. Early life nutrition is setting children up physiologically for the rest of their lives.” (ANI)

Filed Under: International News Tagged With: Animal Science, blood tests, bone growth, Calcium Deficiency, Calcium Nutrition, Calcium Regulation, Calcium Supplement, Densities, fat cells, healthy bones, Life Nutrition, Lifelong Bone Health, mesenchymal stem cells, Mineral Nutrition, Newborn Pigs, north carolina state university, piglets, rich diet, sexual maturity, Vitamin D

Study sheds light on the evolution of lizards

May 10, 2010 By vani Leave a Comment

London, May 10 (ANI): A new research has confirmed that competition, and not predation, is the primary selective force in island lizards.

In one of its kind ecological field experiment, entire islands in the Bahamas were wrapped with netting, snakes introduced to two other islands and the fitness of hundreds of lizards was measured using treadmills.

The research has resolved a long-standing question about the evolution of lizards.

As part of their research, Ryan Calsbeek and Robert Cox of Dartmouth College in Hanover, New Hampshire, excluded predators from two small, uninhabited islands in the Bahamas by wrapping the islands – about 1000 square metres each – with netting to keep out predatory birds. Meanwhile, they enhanced predation on two other islands by introducing lizard-eating snakes.

Also, they seeded one of each pair of islands with high densities of Anolis sagrei lizards, and the other with lower densities of the animals.

Before release, they marked and measured each one and tested its stamina by running it to exhaustion on a treadmill.

“Your Lance Armstrong lizards can run about 7 minutes. Your overweight field-biologist lizard runs for about 2 minutes. We spent several hours a day just running the animals, and we did that day in and day out for several weeks,” New Scientist quoted Calsbeek, as saying.

After a period of four months, the experts returned to the island and recaptured every remaining lizard.

Larger, longer-legged and higher-stamina lizards had survived better than smaller, wimpier ones on higher-density islands where competition was more intense, they found.

However, these traits did not affect the chance of survival in the face of predation. This supports the idea that competition, and not predation, is the primary selective force in these island lizards, says Calsbeek.

David Reznick, an evolutionary biologist at the University of California, Riverside, said: “To me, that”s surprising. I would have thought that predation would matter.”

The study has been published in the Journal Nature. (ANI)

Filed Under: International News Tagged With: Dartmouth College, Densities, Ecological Field, evolutionary biologist, exhaustion, Field Biologist, Field Experiment, Hanover New Hampshire, Islands In The Bahamas, lance armstrong, lizard, lizards, New Scientist, Predatory Birds, Robert Cox, snakes, Square Metres, stamina, Uninhabited Islands, university of california riverside

Orang-utans can swim

March 20, 2010 By vani Leave a Comment

London, March 20 (ANI): The assumptions that orang-utans prefer to remain at bay from water seem to have fallen flat after a group was snapped getting wet for various reasons.

Conservationists were stunned when a group of orphaned orang-utans that had been relocated to Kaja Island in Borneo splashed themselves with one pair even having sex in water.

“My guess is that the male chose the location because there was less chance of him being interrupted by other, more dominant males,” New Scientist quoted Anne Russon of York University in Toronto, Canada, as saying.

Russon continued: “Orang-utans are famous for their fear of water. They have high body densities and can”t help but sink.”

Russon added: “One day we saw an adolescent orang-utan called Sif wade into deep water, hunker down and then lunge forward making simple paddling movements with her arms and legs. It was kind of like a bad dog paddle.”

The study has been published in the Journal of Comparative Psychology. (ANI)

Filed Under: International News Tagged With: adolescent, Arms And Legs, assumptions, borneo, conservationists, deep water, Densities, Dog Paddle, dominant males, Fear Of Water, guess, having sex, Journal Of Comparative Psychology, london march, New Scientist, Russon, Sex In Water, toronto canada, york university

Increasing residential and employment density may reduce vehicle travel, fuel use and CO2

September 2, 2009 By admin Leave a Comment

Washington, Sept 2 (ANI): A new report has determined that increasing population and employment density in metropolitan areas could reduce vehicle travel, energy use, and CO2 emissions from less than 1 percent up to 11 percent by 2050.

The report is a new congressionally mandated report from the National Research Council in the US.

Assuming compact development is focused on new and replacement housing, as converting existing housing to higher densities could be prohibitively difficult, significant increases in density would result in modest short-term reductions in personal travel, energy use, and CO2 emissions.

However, these reductions will grow over time.

According to the committee that wrote the report, the most reliable research studies estimate that doubling residential density in a metropolitan area might lower household driving between 5 percent and 12 percent.

If higher density were paired with more concentrated employment and commercial locations, and combined with improvements to public transit and other strategies to reduce automobile travel, household driving could be lowered by as much as 25 percent.

By reducing vehicle use, petroleum use and CO2 emissions would also be lessened.

In order to quantify the potential effects of compact development, the committee developed illustrative scenarios, looking forward to 2030 and 2050.

If 75 percent of new and replacement housing units in the US were developed at twice the density of current new development, and individuals drove 25 percent less – the committee’s upper-bound scenario – personal travel, fuel use, and CO2 emissions would be reduced by 7 percent to 8 percent, relative to a base case, by 2030, and by 8 percent to 11 percent by 2050.

If only 25 percent of housing units were developed more compactly, and residents drove 12 percent less, then personal travel, fuel use, and CO2 emissions would be reduced by approximately 1 percent by 2030, and by 1.3 percent to 1.7 percent by 2050.

If in this lower-bound scenario, residents drove only 5 percent less, then personal travel, fuel use, and CO2 emissions would be reduced by less than 1 percent by 2050. (ANI)

Filed Under: Science News Tagged With: ANI, area, automobile, Automobile Travel, base, Base Case, case, co2 emissions, committee, Compact Development, Council, Densities, density, Development, employment, Employment Density, energy, energy use, fuel, household, housing, housing units, Illustrative Scenarios, metropolitan area, metropolitan areas, national, National Research Council, order, percent, Personal Travel, petroleum, population, population density, public transit, replacement, report, Research, Residential Density, scenario, Sept, time, transit, travel, US, use, vehicle, Vehicle Emissions, Vehicle Travel, Washington

Fish are likely to exhibit natural behavior in large groups rather than small

June 30, 2009 By admin Leave a Comment

Washington, June 30 (ANI): A new research has determined that fish are more likely to exhibit natural behavior in a home aquarium in large groups, rather than when kept alone or in pairs.

Scientists at the Universities of Plymouth and Exeter in the UK conducted the research.

In line with the aim to establish welfare guidelines for fish, these researchers have been collaborating with the WALTHAM Centre for Pet Nutrition, examining healthy stocking densities and the use of novel objects with fish commonly kept in home aquaria.

This current research looked at two common aquaria species, neon tetras and white cloud mountain minnows.

According to Dr Katherine Sloman from the University of Plymouth, “Fish kept alone or in pairs show higher levels of aggression than those kept in groups of ten or more; large groups are also more likely to exhibit natural behaviours such as shoaling.”

Further research is needed to ascertain the criteria for fish welfare in home aquaria.

The results of these studies, funded by the WALTHAM Centre for Pet Nutrition, should go some way to improving welfare for these environmentally, economically and socially important and interesting animals. (ANI)

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Suzaku space mission snaps first complete X-ray view of a galaxy cluster

May 29, 2009 By admin Leave a Comment

Washington, May 29 (ANI): In a new study, the joint Japan-US Suzaku mission has for the first time detected X-ray-emitting gas at a cluster’s outskirts, where a billion-year plunge to the center begins.

“These Suzaku observations are exciting because we can finally see how these structures, the largest bound objects in the universe, grow even more massive,” said Matt George, the study’s lead author at the University of California, Berkeley.

The team trained Suzaku’s X-ray telescopes on the cluster PKS 0745-191, which lies 1.3 billion light-years away in the southern constellation Puppis.

Between May 11 and 14, 2007, Suzaku acquired five images of the million-degree gas that permeates the cluster.

By looking at a cluster in X-rays, astronomers can measure the temperature and density of the gas, which provides clues about the gas pressure and total mass of the cluster.

In PKS 0745-191, the gas temperature peaks at 164 million degrees Fahrenheit (91 million C) about 1.1 million light-years from the cluster’s center.

Then, the temperature declines smoothly with distance, dropping to 45 million F (25 million C) more than 5.6 million light-years from the center.

Astronomers expect that the gas in the inner part of a galaxy cluster has settled into a “relaxed” state in equilibrium with the cluster’s gravity.

This means that the hottest, densest gas lies near the cluster’s center, and temperatures and densities steadily decline at greater distances.

In the cluster’s outer regions, though, the gas is no longer in an orderly state because matter is still falling inward.

“Clusters are the most massive, relaxed objects in the universe, and they are continuing to form now,” said team member Andy Fabian at the Cambridge Institute of Astronomy in the UK.

The distance where order turns to chaos is referred to as the cluster’s ‘virial radius’.

For the first time, this study shows the X-ray emission and gas density and temperature out to – and even beyond – the virial radius, where the cluster continues to form.

“It gives us the first complete X-ray view of a cluster of galaxies,” Fabian said. (ANI)

Filed Under: Science News Tagged With: cambridge institute, constellation puppis, degree gas, degrees fahrenheit, Densities, equilibrium, fahrenheit 91, galaxy cluster, gas density, gas temperature, million light years, outer regions, outskirts, ray emission, Ray View, s center, Space Mission, suzaku, university of california berkeley, virial, x rays, x-ray

Mystery of Milky Way’s X-ray glow solved

May 2, 2009 By admin Leave a Comment

Washington, April 30 (ANI): An image of a region near the center of our galaxy has resolved a long-standing mystery about an X-ray glow along the plane of the galaxy, attributing it to hundreds of point-like X-ray sources, implying that the glow is due to millions of such sources.

The image shows an infrared view from the Spitzer Space Telescope of the central region of the Milky Way, with a pullout showing a Chandra X-ray Observatory image of a region located only 1.4 degrees away from the center of the galaxy.

The so-called galactic ridge X-ray emission was first detected more than two decades ago using early X-ray observatories such as HEAO-1 and Exosat.

The ridge was observed to extend about two degrees above and below the plane of the galaxy and about 40 degrees along the plane of the galaxy on either side of the galactic center. It appeared to be diffuse.

One interpretation of the galactic X-ray ridge is that it is emission from 100-million-degree gas.

This interpretation is problematic because the disk of the galaxy is not massive enough to confine such hot gas, which should flow away in a wind.

Replenishing the gas would then be a problem, since plausible sources of energy such as supernovas are not nearly powerful enough.

A very deep Chandra observation, lasting for about 12 days, was used to study the nature of this ridge emission.

The field was chosen to be close enough to the galactic plane so that the ridge emission was strong, but in a region with relatively little absorption from dust and gas to maximize the number of sources that might be detected.

A total of 473 sources were detected in an area on the sky only about 3 percent of the size of the full Moon, one of the highest densities of X-ray sources ever seen in our galaxy.

It was found that more than 80 percent of the seemingly diffuse ridge of X-ray emission was resolved into individual sources.

These are believed to be mostly white dwarfs pulling matter from companion stars and double stars with strong magnetic activity that are producing X-ray outbursts or flares that are similar to, but more powerful than the flares seen on the Sun.

These stars are unrelated to the large-scale structures seen towards the center of the Spitzer image, which are probably caused by young massive stars. (ANI)

Filed Under: Uncategorized Tagged With: center of the galaxy, chandra observation, chandra x ray, companion stars, degree gas, Densities, double stars, full moon, galactic center, galactic plane, heao, infrared view, Milky Way, observatory image, ray emission, ray observatory, ray ridge, ray sources, sources of energy, spitzer space telescope, white dwarfs

Studying a person’s position vital for saving lives during suicide terrorist attack

March 24, 2009 By admin Leave a Comment

Washington, March 24 (ANI): In a new research, scientists at the Florida Institute of Technology have determined that where a person is standing in a room or other location during a suicide terrorist attack can have a great bearing on survival and injuries.

The research was conducted by Florida Tech Fulbright Scholar Zeeshan-ul-hassan Usmani and Daniel Kirk, assistant professor in the department of mechanical and aerospace engineering.

The two researchers have developed accurate physics-based models of a suicide bombing attack, including casualty levels and explosive composition.

Their work also describes human shields available in the crowd with partial and full coverage in both two- and three-dimensional environments.

Their virtual simulation tool assesses the impact of crowd formation patterns and their densities on the magnitude of injury and number of casualties of a suicide bombing attack.

For a typical attack, the researchers suggest that they can reduce the number of fatalities by 12 percent and the number of injuries by 7 percent if their recommendations are followed.

Simulation results were compared and validated by real-life incidents in Iraq.

Line-of-sight with the attacker, rushing toward the exit and stampede were found to be the victims’ most lethal choices both during and after the attack.

The findings of the study, although preliminary, may have implications for emergency response and counter terrorism. (ANI)

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