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Gallium in Medical News

Low-cost LEDs to slash household electric bills

...ld see household lighting bills reduced by up to 75% within five years. gallium Nitride (GaN), a man-made semiconductor used to make LEDs (light emitting d...ciences Research Council (EPSRC), the Cambridge University based Centre for gallium Nitride has developed a new way of making GaN which could produce LEDs for ...

New stretchable electrodes created to study stresses on cardiac cells

...nical stresses from heart attacks, traumatic brain injuries and other diseases. The devices are made by injecting a liquid alloy made of indium and gallium into thin microchannels between two sheets of a plastic polymer, said Babak Ziaie, a Purdue associate professor of electrical and computer engineering...
Gallium in Medical Technology

Genta Receives Key Patent Related to Oral Gallium Compound G4544

Company to Seek Buyer for Marketed Parenteral Product Ganite(R) BERKELEY HEIGHTS, N.J., April 14 /PRNewswire/ -- Genta Incorporated (Nasdaq: GNTA ) today announced that the Company has received notice that its patent application covering novel pharmaceutical gallium compositions and compl...

Genta Clinical Programs Featured at American Society of Hematology Meeting

...bolus subcutaneous (SC) injection and brief IV Infusion. Publication. -- Phase 1 assessment of G4544, an orally bioavailable formulation of gallium nitrate. Publication. About Genasense Genasense inhibits production of Bcl-2, a protein made by cancer cells that is thought to block chemotherapy...

Genta Completes Initial Clinical Dosing of G4544, a New Oral Drug for Bone Diseases

...e U.S. National Cancer Institute. In investigational studies, high doses of gallium nitrate demonstrated consistent antitumor activity in patients with non-Hod...rimental work by Genta personnel and others established that lower doses of gallium directly inhibited calcium release from bone, principally by decreasing bon...

Genta Incorporated Announces Third Quarter 2007 Financial Results

...r. "For Genasense, we initiated patient accrual into our global Phase 3 trial in melanoma, known as AGENDA. We secured FDA allowance of the G4544 oral gallium IND and initiated its first clinical trial. We completed the filing of our NDA appeal to FDA in CLL. We showed that brief high-dose infusions of Genas...

Emisphere Technologies, Inc. Announces 2007 Third Quarter Financial Results

...be investigated. Emisphere has five products in Phase I: -- An Investigational New Drug application ("IND") was filed by Genta Incorporated on gallium on July 31, 2007 -- A program continues on an improved oral formulation of the antiviral compound acyclovir with a pharmaceutical company outside...

Genta Initiates First Clinical Trial with New Oral Drug (G4544) to Treat Bone Disease

...e U.S. National Cancer Institute. In investigational studies, high doses of gallium nitrate demonstrated consistent antitumor activity in patients with non-Hod...rimental work by Genta personnel and others established that lower doses of gallium directly inhibited calcium release from bone, principally by decreasing bon...

Genta Incorporated Announces Second Quarter 2007 Financial Results and Corporate Highlights

...ense that may simplify its administration, we have added a new clinical- stage compound with the announcement of an IND filing for an orally available gallium product to treat accelerated bone loss. We plan to continue ongoing efforts to further diversify the Company's portfolio and leverage our expertise in...

Emisphere Technologies, Inc. Announces 2007 Second Quarter Financial Results

...hen be investigated Emisphere has five products in Phase I: -- An Investigational New Drug application (IND) was filed by Genta Incorporated on gallium nitrate on July 31, 2007 -- A program continues on an improved oral formulation of the antiviral compound acyclovir with a pharmaceutical company...

Phase 2 Clinical Results of Ganite Plus Standard Therapy in Patients with Relapsed/Refractory Lymphoma Presented at ASCO

...ta, investigators at Loyola University Medical Center sought to incorporate gallium nitrate into a minimally myelosuppressive "salvage" regimen (called "GaRD")...nts who had failed multiple types of standard therapy. In the GaRD trial, gallium nitrate was administered in combination with rituximab and dexamethasone. T...

Phase 2 Clinical Results of Ganite Plus Standard Therapy in Patients with Relapsed/Refractory Lymphoma Presented at ASCO

...a, investigators at Loyola University Medical Center sought to incorporate gallium nitrate into a minimally myelosuppressive “salvage” regimen (c...s who had failed multiple types of standard therapy. In the GaRD trial, gallium nitrate was administered in combination with rituximab and dexamethasone. ...
Gallium in Medical Definition

Nuclear medicine

...tium/Rubidium. The most commonly used liquid radionuclides are: Technetium -99 m ( technetium-99m ) Iodine -123 and 131 Thallium -201 gallium -67 Fluorine -18 Indium -111 The most commonly used gaseous/aerosol radionuclides are: Xenon -133 Krypton -81m Technetium-99m Tec...
Gallium in Medical Dictionary

Gallium

Gallium is a chemical element that has the symbol Ga and atomic number 31. Elemental gallium does not occur in nature, but as the Ga (III) salt, in trace amounts in bauxite and zinc ores. A soft silvery metallic poor metal, elemental gallium is a brittle solid at low... Gallium arseni...

Gallium scan

... A gallium scan or gallium 67 scan is a type of nuclear medicine study tha...fic type of tissue, or disease state of tissue. gallium salts like ...

Abscess scan

...can — Radioactive. Definition. Radioactive abscess scan uses white ... gallium (Ga) scan within the previous month (could interfere with test results) ....can - radioactive. Definition. Radioactive abscess scan uses white ... gallium (Ga) scan within the previous month (could interfere with test results) ....
Gallium in Biological News

In troubled economic times, BioSquare 2009 successfully serves as business and innovation starter

... to present young biotech companies, to cross-match information...BioSquare becomes a relevant business conference,” states Albin Jourda, CEO of gallium Moore, a merger/acquisition consulting firm specialised in information technology, biotech and cleantech. BioSquare 2009 sets up meetings, partnersh...

Princeton researchers discover new type of laser

...n intense, narrow beam of a single, very pure color. One way to produce a laser beam is to pass an electric current through a semiconductor such as gallium arsenide. The electric current pumps energy into the material, forcing a large number of its electrons to a higher energy level than normal. Under cer...

Story tips from the Department of Energy's Oak Ridge National Laboratory, June 2008

...TRONICS -- Zinc oxide LEDs . . . Efficient yet inexpensive light-emitting diodes made of zinc oxide could one day replace today's state-of-the-art gallium nitride-based devices. Key to the discovery is production of positively charged carriers -- p-type doping -- in zinc oxide using rapid pulse thermal p...

The photonic beetle

...ection of a scale, and then took an electron microscope image of it. Then he used a focused ion beam sort of a tiny sandblaster that shoots a beam of gallium ions to shave off the exposed end of the scale, and then took another image, doing so repeatedly until he had images of 150 cross-sections from the s...

Trojan horse strategy defeats drug-resistant bacteria

...se to iron-seeking bacteria," said Singh. "Because gallium looks like iron, invading bacteria are tricked, in...nto taking it up. Unfortunately for the bacteria, gallium can't function like iron once it's inside bacterial cells." The researchers showed that gallium killed microbes, and prevented the formation of bi...

Gallium: A new antibacterial agent?

...online on March 15 in advance of publication in the April print issue of the Journal of Clinical Investigation, Pradeep Singh and colleagues show that gallium (Ga), which is chemically similar to Fe and can disrupt biological systems by substituting for Fe, inhibits the in vitro growth of Pseudomonas aerugin...

Tiny avalanche photodiodes target bioterrorism agents

... The Northwestern team, led by center director Manijeh Razeghi, became the first to demonstrate 280 nanometer APDs. These devices, based on aluminum gallium nitride (AlGaN) compound semiconductors, have a photocurrent gain of more than 700. The tiny-sized APDs should be capable of efficient detection of...

Novel ultrafast laser detection of cancer cells also may improve understanding of stem cells

... is these changes - a kind of beefing-up of the criminal forces - that Gourley's device, called a biocavity laser, detects. A nano-thin layering of gallium aluminum arsenide combinations send up numerous tiny beams from a small cross-sectional generating area. These beams are reinforced or thwarted by the...
Gallium in Biological Technology

Cold atoms could replace hot gallium in focused ion beams

Scientists at the National Institute of Standards and Technology (NIST) have developed a radical new method of focusing a stream of ions into a point as small as one nanometer (one billionth of a meter).* Because of the versatility of their approachit can be used with a wide range of ions tailored...

Bilayer graphene gets a bandgap

...kable in itself and shows the potential of bilayer graphene for nanoelectronics. This is a narrower bandgap than common semiconductors like silicon or gallium arsenide, and it could enable new kinds of optoelectronic devices for generating, amplifying, and detecting infrared light." "Direct observation o...

Self-assembled nanowires could make chips smaller and faster

...aligned, and defect-free nanowire channels made of gallium arsenide. In a paper to appear in the IEEE (Inst...cations. Compound semiconductor nanowires, such as gallium arsenide, are especially desirable because of thei... it. In contrast to the common types of non-planar gallium arsenide nanowires, the researchers' planar nanowi...

Cheaper materials could be key to low-cost solar cells

...lve the problem." The most popular solar materials in use today are silicon and thin films made of CdTe (cadmium telluride) and CIGS (copper indium gallium selenide). While these materials have helped elevate solar to a major player in renewable energy markets, they are still limited by manufacturing chal...

Duke researchers coax bright white light from unexpected source

...chieving it," Everitt said. Zinc oxide would be both a less-toxic and cheaper light source than the combinations used in today's commercial LEDs -- gallium nitride and cerium-doped yttrium oxide, they said. Cerium-doped yttrium oxide is also used in today's mercury-containing fluorescent bulbs, Everitt ad...

USC researchers print dense lattice of transparent nanotube transistors on flexible base

... not only created printed circuit lattices of nanotube-based transistors to the transparent plastic but also additionally connected them to commercial gallium nitrate (GaN) light-emitting diodes, which change their luminosity by a factor of 1,000 as they are energized. "Our results suggest that aligned na...

New nanocluster to boost thin films for semiconductors

...ic conditions often take months or even years to crystallize and result in low yields. "The benefit is that we can predictably control the ratio of gallium and indium in these structures at molecular levels, which can result in the same control in the fabrication of semiconductor thin films," Johnson said...

'Racetrack' for fast electrons in semiconductor structures

... structure. The fabrication of pure semiconductors is achieved by molecular-beam epitaxy. In an ultrahigh vacuum chamber the source materials, e.g. gallium and arsenic, are evaporated at a background pressure 15 orders of magnitude lower than atmospheric pressure. The growth is highly controlled allowing ...

Avalanche photodiodes target bioterrorism agents

...o visible light. "We built our photodiodes with gallium nitride, which is a semiconductor that can be used...raviolet wavelengths, the researchers designed the gallium nitride photodiodes to operate in a mode that empl...s. The researchers fabricated high-performance gallium nitride ultraviolet avalanche photodiodes on bulk...

Advance brings low-cost, bright LED lighting closer to reality

...t-emitting ingredient in LEDs is a material called gallium nitride, which is used in the sapphire-based blue ...nd zirconium nitride onto the silicon surface. The gallium nitride was then deposited by another common techn... As the zirconium nitride, aluminum nitride and gallium nitride are deposited on the silicon, they arrange...
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