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General RSS Feeds http://www.spectroscience.com/ Sat, 19 May 2012 18:26:57 GMT FeedCreator 1.8.0-dev (info@mypapit.net) 89,155,779,156,152,150 Spectroscience http://www.spectroscience.com/ Subscription Page http://www.spectroscience.com/microscopy/electron-microscopy/5757-subscription-page.html

]]> Fri, 11 May 2012 18:55:12 GMT http://www.spectroscience.com/microscopy/electron-microscopy/5757-subscription-page.html Editorial Board http://www.spectroscience.com/microscopy/electron-microscopy/5758-editorial-board.html

]]> Fri, 11 May 2012 18:55:12 GMT http://www.spectroscience.com/microscopy/electron-microscopy/5758-editorial-board.html Magnetization distribution of magnetic vortex of amorphous FeSiB investigated by electron ... http://www.spectroscience.com/microscopy/electron-microscopy/5759-magnetization-distribution-of-magnetic-vortex-of-amorphous-fesib-investigated-by-electron-holography-and-computer-simulation.html

The three-dimensional spin structure of the magnetic vortex of FeSiB, an amorphous soft magnetic material, was investigated by holography observation and computer simulation. Magnetization distribution in the neighborhood of the vortex center was estimated from the phase distribution obtained by holography observation. To confirm this magnetization distribution, sample-tilting experiments

]]> Fri, 11 May 2012 18:55:12 GMT http://www.spectroscience.com/microscopy/electron-microscopy/5759-magnetization-distribution-of-magnetic-vortex-of-amorphous-fesib-investigated-by-electron-holography-and-computer-simulation.html JEM in this issue, 61:2 http://www.spectroscience.com/microscopy/electron-microscopy/5760-jem-in-this-issue-612.html

]]> Fri, 11 May 2012 18:55:12 GMT http://www.spectroscience.com/microscopy/electron-microscopy/5760-jem-in-this-issue-612.html Contents Page http://www.spectroscience.com/microscopy/electron-microscopy/5761-contents-page.html

]]> Fri, 11 May 2012 18:55:12 GMT http://www.spectroscience.com/microscopy/electron-microscopy/5761-contents-page.html Three-dimensional reconstructions of electrostatic potential distributions with 1. ... http://www.spectroscience.com/microscopy/electron-microscopy/5762-three-dimensional-reconstructions-of-electrostatic-potential-distributions-with-15-nm-resolution-using-off-axis-electron-holography.html

Three-dimensional (3D) reconstruction experiments were carried out by observing high-resolution 3D electrostatic potential distributions of Pt nanoparticles using off-axis electron holographic tomography. These Pt nanoparticles were mounted on the surfaces of amorphous silicon pillars. In order to realize high-resolution observation, we developed a mechanically stable 3D specimen holder with

]]> Fri, 11 May 2012 18:55:12 GMT http://www.spectroscience.com/microscopy/electron-microscopy/5762-three-dimensional-reconstructions-of-electrostatic-potential-distributions-with-15-nm-resolution-using-off-axis-electron-holography.html Direct observation of the initial process of Ostwald ripening using spherical ... http://www.spectroscience.com/microscopy/electron-microscopy/5763-direct-observation-of-the-initial-process-of-ostwald-ripening-using-spherical-aberration-corrected-transmission-electron-microscopy.html

We study in situ behavior of platinum single atoms on amorphous carbon (a-carbon) using a spherical aberration-corrected transmission electron microscope (AC-TEM). Diffusion of single atoms, bi-atoms, clusters (<1 nm) and nanoparticles (<3 nm) was recorded in the same image with a time resolution of 1 s, and such diffusion matches the expected

]]> Fri, 11 May 2012 18:55:12 GMT http://www.spectroscience.com/microscopy/electron-microscopy/5763-direct-observation-of-the-initial-process-of-ostwald-ripening-using-spherical-aberration-corrected-transmission-electron-microscopy.html Space charge characteristics of an insulating thin film negatively charged by a low-energy ... http://www.spectroscience.com/microscopy/electron-microscopy/5764-space-charge-characteristics-of-an-insulating-thin-film-negatively-charged-by-a-low-energy-electron-beam.html

In this study, based on a comprehensive numerical simulation of self-consistent charging, we investigate the formation, evolution and influencing factors of space charge distributions for a grounded insulating thin film of SiO₂ negatively charged by a keV non-penetrating focused electron beam. The simulated space charge presents first positive distributions

]]> Fri, 11 May 2012 18:55:12 GMT http://www.spectroscience.com/microscopy/electron-microscopy/5764-space-charge-characteristics-of-an-insulating-thin-film-negatively-charged-by-a-low-energy-electron-beam.html A useful method for observing intracellular structures of free and cultured cells by scanning ... http://www.spectroscience.com/microscopy/electron-microscopy/5765-a-useful-method-for-observing-intracellular-structures-of-free-and-cultured-cells-by-scanning-electron-microscopy.html

Scanning electron microscopy (SEM) using osmium-maceration methods has been used for analyzing the three-dimensional structure of cell organelles in tissue samples, but it has been quite difficult to observe free and cultured cells with this technique. The present study was performed to develop a method that can be applied

]]> Fri, 11 May 2012 18:55:12 GMT http://www.spectroscience.com/microscopy/electron-microscopy/5765-a-useful-method-for-observing-intracellular-structures-of-free-and-cultured-cells-by-scanning-electron-microscopy.html Structure and formation of the twisted plywood pattern of collagen fibrils in rat lamellar bone http://www.spectroscience.com/microscopy/electron-microscopy/5766-structure-and-formation-of-the-twisted-plywood-pattern-of-collagen-fibrils-in-rat-lamellar-bone.html

This study was designed to elucidate details of the structure and formation process of the alternate lamellar pattern known to exist in lamellar bone. For this purpose, we examined basic internal lamellae in femurs of young rats by transmission and scanning electron microscopy, the latter employing two different macerations

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]]> Fri, 11 May 2012 18:55:12 GMT http://www.spectroscience.com/microscopy/electron-microscopy/5766-structure-and-formation-of-the-twisted-plywood-pattern-of-collagen-fibrils-in-rat-lamellar-bone.html Ultrastructural interaction between spermatozoon and human oviductal cells in vitro http://www.spectroscience.com/microscopy/electron-microscopy/5767-ultrastructural-interaction-between-spermatozoon-and-human-oviductal-cells-in-vitro.html

The oviduct is an important organ for successful mammalian reproduction. In this work, human oviducts were inseminated and their explants analyzed using scanning electron microscopy in order to study, at a finer ultrastructual level, the interaction between spermatozoon and oviduct in vitro. Results show unequivocally a spermatozoon tightly attached

]]> Fri, 11 May 2012 18:55:12 GMT http://www.spectroscience.com/microscopy/electron-microscopy/5767-ultrastructural-interaction-between-spermatozoon-and-human-oviductal-cells-in-vitro.html Efficient and accurate analysis of mitochondrial morphology in a whole cell with a high-voltage ... http://www.spectroscience.com/microscopy/electron-microscopy/5768-efficient-and-accurate-analysis-of-mitochondrial-morphology-in-a-whole-cell-with-a-high-voltage-electron-microscopy.html

Mitochondria in all eukaryotes are essential organelles responsible for adenosine triphosphate synthesis, calcium homeostasis and steroidogenesis. Because the structure and distribution of mitochondria are highly diverse depending on their function and cellular conditions, it is important to develop a rapid and accurate method to assess their morphology. In this

]]> Fri, 11 May 2012 18:55:12 GMT http://www.spectroscience.com/microscopy/electron-microscopy/5768-efficient-and-accurate-analysis-of-mitochondrial-morphology-in-a-whole-cell-with-a-high-voltage-electron-microscopy.html Cover Page http://www.spectroscience.com/microscopy/electron-microscopy/5769-cover-page.html

]]> Fri, 11 May 2012 18:55:12 GMT http://www.spectroscience.com/microscopy/electron-microscopy/5769-cover-page.html Peratech creates fast-acting electronic nose http://www.spectroscience.com/microscopy/microscopy-general/5889-peratech-creates-fast-acting-electronic-nose.html Peratech is developing an electronic nose using its Quantum Tunnelling Composite (QTC) material. This new sensor technology detects the presence of volatile organic compounds (VOCs) very rapidly and can recover equally quickly, in a matter of seconds.

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]]> Fri, 11 May 2012 11:49:11 GMT http://www.spectroscience.com/microscopy/microscopy-general/5889-peratech-creates-fast-acting-electronic-nose.html FDA reviews first rapid, take-home test for HIV http://www.spectroscience.com/microscopy/microscopy-general/5890-fda-reviews-first-rapid-take-home-test-for-hiv.html

The Food and Drug Administration is considering approval of the first over-the-counter HIV test that would allow consumers to quickly test themselves for the virus at home, without medical supervision.FDA reviewers said Friday the OraQuick In-Home HIV test could play a significant role in...

]]> Fri, 11 May 2012 11:40:32 GMT http://www.spectroscience.com/microscopy/microscopy-general/5890-fda-reviews-first-rapid-take-home-test-for-hiv.html Family of toddler want apology for no-fly mistake http://www.spectroscience.com/microscopy/microscopy-general/5891-family-of-toddler-want-apology-for-no-fly-mistake.html

A spokesman for the family of an 18-month-old girl who was pulled off a flight because airline employees thought her name was on the U.S. no-fly list says the girl's parents do not plan to take any legal action.Rick Abbott told The Associated Press Friday that the family

]]> Fri, 11 May 2012 11:40:22 GMT http://www.spectroscience.com/microscopy/microscopy-general/5891-family-of-toddler-want-apology-for-no-fly-mistake.html Grainger says April sales up 12 percent http://www.spectroscience.com/microscopy/microscopy-general/5892-grainger-says-april-sales-up-12-percent.html

W.W. Grainger Inc., a supplier of power tools and other industrial equipment, said Friday that its daily sales in April rose 12 percent from a year earlier.The company said that about 5 percent of the sales growth came from acquisitions. Excluding acquisitions, sales rose 7 percent during the...

]]> Fri, 11 May 2012 11:40:15 GMT http://www.spectroscience.com/microscopy/microscopy-general/5892-grainger-says-april-sales-up-12-percent.html FDA advisers recommend approving weight loss drug http://www.spectroscience.com/microscopy/microscopy-general/5893-fda-advisers-recommend-approving-weight-loss-drug.html Advisers to government health regulators late Thursday recommended that they approve sales of what would be the first new prescription weight-loss drug in the U.S. in more than a decade, despite concerns over cardiac risks.

]]> Fri, 11 May 2012 11:36:28 GMT http://www.spectroscience.com/microscopy/microscopy-general/5893-fda-advisers-recommend-approving-weight-loss-drug.html In metallic glasses, researchers find a few new atomic structures http://www.spectroscience.com/microscopy/microscopy-general/5894-in-metallic-glasses-researchers-find-a-few-new-atomic-structures.html Drawing on computational tools and scanning transmission electron microscopy, a team of University of Wisconsin-Madison and Iowa State University materials experts has examined metallic glasses at the difficult-to-reach scale of just a few nanometers length. They have discovered a new nanometer-scale atomic structure that could help developers fine-tune structures.

]]> Fri, 11 May 2012 11:33:55 GMT http://www.spectroscience.com/microscopy/microscopy-general/5894-in-metallic-glasses-researchers-find-a-few-new-atomic-structures.html New class of thin-film electronics is based on copolymers http://www.spectroscience.com/microscopy/microscopy-general/5895-new-class-of-thin-film-electronics-is-based-on-copolymers.html A French-American collaboration has developed a new combination of polymers that makes it possible to design ultra-thin films capable of self-organization with a 5-nm resolution. These hybrid copolymers are based on sugars and oil-based macromolecules. Previous attempts using nothing but oil-based molecules were limited to 20 nm in thickness.

]]> Fri, 11 May 2012 11:30:03 GMT http://www.spectroscience.com/microscopy/microscopy-general/5895-new-class-of-thin-film-electronics-is-based-on-copolymers.html Successful stem cell differentiation requires DNA compaction http://www.spectroscience.com/microscopy/microscopy-general/5896-successful-stem-cell-differentiation-requires-dna-compaction.html New research findings show that embryonic stem cells unable to fully compact the DNA inside them cannot complete their primary task: differentiation into specific cell types that give rise to the various types of tissues and structures in the body. Researchers from the Georgia Institute of Technology and Emory

]]> Fri, 11 May 2012 11:20:26 GMT http://www.spectroscience.com/microscopy/microscopy-general/5896-successful-stem-cell-differentiation-requires-dna-compaction.html Women researchers more likely to conduct scientific outreach http://www.spectroscience.com/microscopy/microscopy-general/5897-women-researchers-more-likely-to-conduct-scientific-outreach.html In recent years, scientists have been under scrutiny to demonstrate the public relevance of their government-funded research. A new study from Rice University and Southern Methodist University finds that women are much more involved in these outreach efforts than their male counterparts.

]]> Fri, 11 May 2012 11:05:40 GMT http://www.spectroscience.com/microscopy/microscopy-general/5897-women-researchers-more-likely-to-conduct-scientific-outreach.html 3D Culture Cell Harvesting Kit http://www.spectroscience.com/products/5727-3d-culture-cell-harvesting-kit.html The AMSBIO Cultrex 3D Culture Cell Harvesting Kit is based on a non-enzymatic approach that prevents biochemical degradation during processing and overcomes the problems associated with extracting cells from 3D culture in BME or Laminin I.

]]> Fri, 11 May 2012 11:05:36 GMT http://www.spectroscience.com/products/5727-3d-culture-cell-harvesting-kit.html An Incisive Materials Science and Design Solution: the Spider's Venomous Fang http://www.spectroscience.com/microscopy/microscopy-general/5898-an-incisive-materials-science-and-design-solution-the-spiders-venomous-fang.html Among the factors that make spiders successful predators is the ingeniously composed and structured material of their fangs. Although their armour consists of the same material as their predator's...

]]> Fri, 11 May 2012 10:51:34 GMT http://www.spectroscience.com/microscopy/microscopy-general/5898-an-incisive-materials-science-and-design-solution-the-spiders-venomous-fang.html Mild head injuries can cause structural disruption of axons in the brain http://www.spectroscience.com/microscopy/microscopy-general/5919-mild-head-injuries-can-cause-structural-disruption-of-axons-in-the-brain.html Even mild head injuries can cause significant abnormalities in brain function that last for several days, which may explain the neurological symptoms experienced by some individuals who have experienced a head injury associated with sports, accidents or combat, according to a study by Virginia Commonwealth University School of Medicine

]]> webmaster@vitalwebmaster.com (Administrator) Fri, 11 May 2012 10:41:35 GMT http://www.spectroscience.com/microscopy/microscopy-general/5919-mild-head-injuries-can-cause-structural-disruption-of-axons-in-the-brain.html HIV community supports rapid OTC testing http://www.spectroscience.com/microscopy/microscopy-general/5920-hiv-community-supports-rapid-otc-testing.html Who's Positive, a national HIV awareness organization, today announced the results of a year-long online survey measuring support for over-the counter (OTC) HIV testing. The organization will present these results at the upcoming U.S. Food and Drug Administration (FDA) Blood Products Advisory Committee (BPAC) on May 15, 2012.

]]> webmaster@vitalwebmaster.com (Administrator) Fri, 11 May 2012 10:38:35 GMT http://www.spectroscience.com/microscopy/microscopy-general/5920-hiv-community-supports-rapid-otc-testing.html Factors associated with successful vaginal birth after Caesarean http://www.spectroscience.com/microscopy/microscopy-general/5921-factors-associated-with-successful-vaginal-birth-after-caesarean.html Melissa Lunsford wants a vaginal delivery for her fourth child. Following a series of Caesarean and vaginal deliveries for her other children, she couldn't find a doctor or a hospital willing to give her the vaginal birth option for her current pregnancy.

]]> webmaster@vitalwebmaster.com (Administrator) Fri, 11 May 2012 10:37:03 GMT http://www.spectroscience.com/microscopy/microscopy-general/5921-factors-associated-with-successful-vaginal-birth-after-caesarean.html NBHA commends FDA for continuing investigation of bisphosphonate treatment for osteoporosis http://www.spectroscience.com/microscopy/microscopy-general/5922-nbha-commends-fda-for-continuing-investigation-of-bisphosphonate-treatment-for-osteoporosis.html In response to today's Perspective pieces published in the New England Journal Of Medicine, the National Bone Health Alliance (NBHA), a public-private partnership bringing together the expertise and resources of its 42 members from the private and non-profit sectors to collectively advance bone health and prevent disease, commends the

]]> webmaster@vitalwebmaster.com (Administrator) Fri, 11 May 2012 10:32:52 GMT http://www.spectroscience.com/microscopy/microscopy-general/5922-nbha-commends-fda-for-continuing-investigation-of-bisphosphonate-treatment-for-osteoporosis.html Anti-epilepsy drug phenobarbital stunts neuronal growth http://www.spectroscience.com/microscopy/microscopy-general/5923-anti-epilepsy-drug-phenobarbital-stunts-neuronal-growth.html A brain study in infant rats demonstrates that the anti-epilepsy drug phenobarbital stunts neuronal growth, which could prompt new questions about using the first-line drug to treat epilepsy in human newborns.

]]> webmaster@vitalwebmaster.com (Administrator) Fri, 11 May 2012 10:23:07 GMT http://www.spectroscience.com/microscopy/microscopy-general/5923-anti-epilepsy-drug-phenobarbital-stunts-neuronal-growth.html House subcommittee approves FY13 U.S. international affairs spending bill without amendment http://www.spectroscience.com/microscopy/microscopy-general/5924-house-subcommittee-approves-fy13-us-international-affairs-spending-bill-without-amendment.html The House Appropriations State and Foreign Operations subcommittee on Wednesday approved, without changes, its version of the FY 2013 U.S. international affairs appropriations bill, Devex reports (Mungcal, 5/10).

]]> webmaster@vitalwebmaster.com (Administrator) Fri, 11 May 2012 10:21:15 GMT http://www.spectroscience.com/microscopy/microscopy-general/5924-house-subcommittee-approves-fy13-us-international-affairs-spending-bill-without-amendment.html