Chemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesDisciplines and OccupationsTechnology, Industry, AgricultureInformation ScienceHealth Care
Scintillation CountingRadionuclide ImagingPlasticsTechnetiumGermaniumRadioactive WasteRadiometryElementary ParticlesGamma CamerasTechnology, RadiologicRadioisotopesOptical FibersCarbon RadioisotopesXenon RadioisotopesThalliumTritiumPhotonsMercury RadioisotopesNuclear PhysicsWhole-Body CountingAutoradiographyIodine RadioisotopesSpectrometry, GammaPentetic AcidTantalumComputersRadiation MonitoringMethodsRadioisotope Dilution TechniqueCobalt RadioisotopesIridium RadioisotopesRadiation DosageParticle AcceleratorsPhantoms, ImagingMonte Carlo MethodIodohippuric AcidRadioisotope RenographyLutetiumSerum Albumin, Radio-IodinatedTechnetium Tc 99m PentetateTissue DistributionRadiotherapy, High-EnergyIsotope LabelingElectronicsEquipment DesignTomographyIron IsotopesBenzene DerivativesEvaluation Studies as TopicIndiumRadonIonic LiquidsAir Pollutants, RadioactiveAir Pollution, Radioactive
Scintillation Counting: Detection and counting of scintillations produced in a fluorescent material by ionizing radiation.Radionuclide Imaging: The production of an image obtained by cameras that detect the radioactive emissions of an injected radionuclide as it has distributed differentially throughout tissues in the body. The image obtained from a moving detector is called a scan, while the image obtained from a stationary camera device is called a scintiphotograph.Plastics: Polymeric materials (usually organic) of large molecular weight which can be shaped by flow. Plastic usually refers to the final product with fillers, plasticizers, pigments, and stabilizers included (versus the resin, the homogeneous polymeric starting material). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Technetium: The first artificially produced element and a radioactive fission product of URANIUM. Technetium has the atomic symbol Tc, atomic number 43, and atomic weight 98.91. All technetium isotopes are radioactive. Technetium 99m (m=metastable) which is the decay product of Molybdenum 99, has a half-life of about 6 hours and is used diagnostically as a radioactive imaging agent. Technetium 99 which is a decay product of technetium 99m, has a half-life of 210,000 years.Germanium: A rare metal element with a blue-gray appearance and atomic symbol Ge, atomic number 32, and atomic weight 72.63.Radioactive Waste: Liquid, solid, or gaseous waste resulting from mining of radioactive ore, production of reactor fuel materials, reactor operation, processing of irradiated reactor fuels, and related operations, and from use of radioactive materials in research, industry, and medicine. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Radiometry: The measurement of radiation by photography, as in x-ray film and film badge, by Geiger-Mueller tube, and by SCINTILLATION COUNTING.Elementary Particles: Individual components of atoms, usually subatomic; subnuclear particles are usually detected only when the atomic nucleus decays and then only transiently, as most of them are unstable, often yielding pure energy without substance, i.e., radiation.Gamma Cameras: Electronic instruments that produce photographs or cathode-ray tube images of the gamma-ray emissions from organs containing radionuclide tracers.Technology, Radiologic: The application of scientific knowledge or technology to the field of radiology. The applications center mostly around x-ray or radioisotopes for diagnostic and therapeutic purposes but the technological applications of any radiation or radiologic procedure is within the scope of radiologic technology.Radioisotopes: Isotopes that exhibit radioactivity and undergo radioactive decay. (From Grant & Hackh's Chemical Dictionary, 5th ed & McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Optical Fibers: Thin strands of transparent material, usually glass, that are used for transmitting light waves over long distances.Carbon Radioisotopes: Unstable isotopes of carbon that decay or disintegrate emitting radiation. C atoms with atomic weights 10, 11, and 14-16 are radioactive carbon isotopes.Xenon Radioisotopes: Unstable isotopes of xenon that decay or disintegrate emitting radiation. Xe atoms with atomic weights 121-123, 125, 127, 133, 135, 137-145 are radioactive xenon isotopes.Thallium: A heavy, bluish white metal, atomic number 81, atomic weight [204.382; 204.385], symbol Tl.TritiumPhotons: Discrete concentrations of energy, apparently massless elementary particles, that move at the speed of light. They are the unit or quantum of electromagnetic radiation. Photons are emitted when electrons move from one energy state to another. (From Hawley's Condensed Chemical Dictionary, 11th ed)Mercury Radioisotopes: Unstable isotopes of mercury that decay or disintegrate emitting radiation. Hg atoms with atomic weights 185-195, 197, 203, 205, and 206 are radioactive mercury isotopes.Nuclear Physics: The study of the characteristics, behavior, and internal structures of the atomic nucleus and its interactions with other nuclei. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Whole-Body Counting: Measurement of radioactivity in the entire human body.Autoradiography: The making of a radiograph of an object or tissue by recording on a photographic plate the radiation emitted by radioactive material within the object. (Dorland, 27th ed)Iodine Radioisotopes: Unstable isotopes of iodine that decay or disintegrate emitting radiation. I atoms with atomic weights 117-139, except I 127, are radioactive iodine isotopes.Spectrometry, Gamma: Determination of the energy distribution of gamma rays emitted by nuclei. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Pentetic Acid: An iron chelating agent with properties like EDETIC ACID. DTPA has also been used as a chelator for other metals, such as plutonium.Tantalum: Tantalum. A rare metallic element, atomic number 73, atomic weight 180.948, symbol Ta. It is a noncorrosive and malleable metal that has been used for plates or disks to replace cranial defects, for wire sutures, and for making prosthetic devices. (Dorland, 28th ed)ComputersRadiation Monitoring: The observation, either continuously or at intervals, of the levels of radiation in a given area, generally for the purpose of assuring that they have not exceeded prescribed amounts or, in case of radiation already present in the area, assuring that the levels have returned to those meeting acceptable safety standards.Methods: A series of steps taken in order to conduct research.Radioisotope Dilution Technique: Method for assessing flow through a system by injection of a known quantity of radionuclide into the system and monitoring its concentration over time at a specific point in the system. (From Dorland, 28th ed)Cobalt Radioisotopes: Unstable isotopes of cobalt that decay or disintegrate emitting radiation. Co atoms with atomic weights of 54-64, except 59, are radioactive cobalt isotopes.Iridium Radioisotopes: Unstable isotopes of iridium that decay or disintegrate emitting radiation. Ir atoms with atomic weights 182-190, 192, and 194-198 are radioactive iridium isotopes.Radiation Dosage: The amount of radiation energy that is deposited in a unit mass of material, such as tissues of plants or animal. In RADIOTHERAPY, radiation dosage is expressed in gray units (Gy). In RADIOLOGIC HEALTH, the dosage is expressed by the product of absorbed dose (Gy) and quality factor (a function of linear energy transfer), and is called radiation dose equivalent in sievert units (Sv).Particle Accelerators: Devices which accelerate electrically charged atomic or subatomic particles, such as electrons, protons or ions, to high velocities so they have high kinetic energy.Phantoms, Imaging: Devices or objects in various imaging techniques used to visualize or enhance visualization by simulating conditions encountered in the procedure. Phantoms are used very often in procedures employing or measuring x-irradiation or radioactive material to evaluate performance. Phantoms often have properties similar to human tissue. Water demonstrates absorbing properties similar to normal tissue, hence water-filled phantoms are used to map radiation levels. Phantoms are used also as teaching aids to simulate real conditions with x-ray or ultrasonic machines. (From Iturralde, Dictionary and Handbook of Nuclear Medicine and Clinical Imaging, 1990)Monte Carlo Method: In statistics, a technique for numerically approximating the solution of a mathematical problem by studying the distribution of some random variable, often generated by a computer. The name alludes to the randomness characteristic of the games of chance played at the gambling casinos in Monte Carlo. (From Random House Unabridged Dictionary, 2d ed, 1993)Iodohippuric Acid: An iodine-containing compound used in pyelography as a radiopaque medium. If labeled with radioiodine, it can be used for studies of renal function.Radioisotope Renography: Graphic tracing over a time period of radioactivity measured externally over the kidneys following intravenous injection of a radionuclide which is taken up and excreted by the kidneys.Lutetium: Lutetium. An element of the rare earth family of metals. It has the atomic symbol Lu, atomic number 71, and atomic weight 175.Serum Albumin, Radio-Iodinated: Normal human serum albumin mildly iodinated with radioactive iodine (131-I) which has a half-life of 8 days, and emits beta and gamma rays. It is used as a diagnostic aid in blood volume determination. (from Merck Index, 11th ed)Technetium Tc 99m Pentetate: A technetium imaging agent used in renal scintigraphy, computed tomography, lung ventilation imaging, gastrointestinal scintigraphy, and many other procedures which employ radionuclide imaging agents.Tissue Distribution: Accumulation of a drug or chemical substance in various organs (including those not relevant to its pharmacologic or therapeutic action). This distribution depends on the blood flow or perfusion rate of the organ, the ability of the drug to penetrate organ membranes, tissue specificity, protein binding. The distribution is usually expressed as tissue to plasma ratios.Radiotherapy, High-Energy: Radiotherapy using high-energy (megavolt or higher) ionizing radiation. Types of radiation include gamma rays, produced by a radioisotope within a teletherapy unit; x-rays, electrons, protons, alpha particles (helium ions) and heavy charged ions, produced by particle acceleration; and neutrons and pi-mesons (pions), produced as secondary particles following bombardment of a target with a primary particle.Isotope Labeling: Techniques for labeling a substance with a stable or radioactive isotope. It is not used for articles involving labeled substances unless the methods of labeling are substantively discussed. Tracers that may be labeled include chemical substances, cells, or microorganisms.Electronics: The study, control, and application of the conduction of ELECTRICITY through gases or vacuum, or through semiconducting or conducting materials. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Equipment Design: Methods of creating machines and devices.Tomography: Imaging methods that result in sharp images of objects located on a chosen plane and blurred images located above or below the plane.Iron Isotopes: Stable iron atoms that have the same atomic number as the element iron, but differ in atomic weight. Fe-54, 57, and 58 are stable iron isotopes.Benzene DerivativesEvaluation Studies as Topic: Studies determining the effectiveness or value of processes, personnel, and equipment, or the material on conducting such studies. For drugs and devices, CLINICAL TRIALS AS TOPIC; DRUG EVALUATION; and DRUG EVALUATION, PRECLINICAL are available.Indium: A metallic element, atomic number 49, atomic weight 114.82, symbol In. It is named from its blue line in the spectrum. (From Dorland, 28th ed)Radon: A naturally radioactive element with atomic symbol Rn, atomic number 86, and atomic weight 222. It is a member of the noble gas family found in soil, and is released during the decay of radium.Ionic Liquids: Salts that melt below 100 C. Their low VOLATILIZATION can be an advantage over volatile organic solvents.Air Pollutants, Radioactive: Pollutants, present in air, which exhibit radioactivity.Air Pollution, Radioactive

Role of antibody and complement in opsonization of group B streptococci. (1/334)

A requirement for the classic complement pathway in opsonization of group B streptococci was observed by using both a chemiluminescence and a radiolabeled bacterial uptake technique. The classic pathway increased levels of opsonization for types Ia and II stock and wild strains and for some type III wild strains. In contrast, other type III wild strains and the type III stock strain had accelerated kinetics of uptake in the presence of an intact classic pathway, but the level of opsonization was unchanged from that with antibody alone. We could not demonstrate a significant role for the alternative pathway in opsonizing stock or wild strains of group B streptococci. Futhermore, electrophoretic and complement consumption analysis by hemolytic titration failed to reveal alternative pathway activation by the majority of strains of this group. Therapy aimed at supplying opsonins for these organisms will require the presence of type-specific antibody.  (+info)

Calcium fluxes in single muscle fibres measured with a glass scintillator probe. (2/334)

1. An intracellular glass scintillator (Caldwell & Lea, 1973) has been used to obtain a continuous record of the influx of 45Ca into single muscle fibres of the barnacle, Balanus nubilus. 2. In the presence of intracellular EGTA (final concentration greater than 3 mM/kg), the scintillator detected an initial fast phase to the influx (half-time = 18.3 min, compartment size = 4.1% fibre volume) followed by a slow, linear phase which gave a value for the Ca influx of 1.2 p-mole . cm-2 . sec-1. The efflux of 45Ca was also measured with the scintillator by transferring a 45Ca-loaded fibre into 45Ca-free saline. Two exponential phases of efflux were detected with half-times of 16.2 and 500 min. 3. The characterisitics of the fast phase of the influx and efflux are similar to those of the influx of the impermeant sucrose and inulin, suggesting that the fast phase represents exchange with the extracellular 'cleft space'. This phase was insensitive to external La3+ (2 mM). 4. The slow phase is considered to represent the flux of Ca across the surface membrane. It was inhibited by external La3+ (2 mM) and stimulated by replacing external Na+ with Li+. 5. When EGTA-injected fibres were depolarized using an axial, intracellular electrode the Ca influx, measured from the slow phase, was increased. At higher concentrations of intracellular EGTA (6--22 mM/kg), the extra Ca influx due to a rectangular, depolarizing current pulse was proportional to the number of Ca spikes it produced. A single Ca spike gave an extra Ca influx of 19--48 p-mole . cm-2. External D600 (5 x 10(-4)M) inhibited both Ca spike and the extra Ca influx. 6. At lower intracellular EGTA concentrations (3.6--11 mM/kg), a 50 mV depolarization of 250 msec duration gave a mean extra Ca influx of 80 p-mole . cm-2. The upper value was 145 p-mole . cm-2 and this would increase the total internal Ca by 4.1 micrometer/kg. It is calculated that if all this extra Ca was bound to the myofibrillar sites for tension, it would only produce 6.2% of the force expected for a similar depolarization in a fibre with no intracellular EGTA.  (+info)

Optimization of a new scintillation gas detector used to localize electrons emitted by 99mTc. (3/334)

We have developed a scintillation gas detector to localize electrons emitted by 99mTc. This type of detector allows direct quantification of images and so provides a clear advantage over autoradiographic film. We have optimized the device to give an image spatial resolution that closely approximates that of typical autoradiographic film. To improve this resolution, it was necessary to select only low-energy electrons (2 and 15 keV) and to devise novel detection and localization techniques for the ionizing particles. METHODS: A parallel-plate proportional avalanche chamber is subject to a uniform electrical field and amplifies the number of released electrons through collisions of ionizing particles in the gas mixture. Light emitted by the gas scintillator during the avalanche process is collected by a highly intensified charge coupled device camera. The centroid of each resulting light distribution is calculated, resulting in a quantitative mapping of the sample's activity. Insertion of the sample within the gas volume improves the efficiency and so provides a method that is both very sensitive and linear. RESULTS: We have shown that in a parallel-plate structure, the application of a high electrical field to the surface of the sample and the selection of appropriate light spots, according to their morphology, can overcome localization errors due to the particles' trajectories. We have obtained a resolution of the order of 30 microm, using electrons from 99mTc. CONCLUSION: This detection technique allows considerable improvement in image resolution. This "electron camera" is a serious rival to existing autoradiographic techniques, because it provides certain other advantages, including direct quantification, linearity, high dynamic range and low noise levels. Thus, new perspectives are made available in quantitative double tracer autoradiography, because electrons can be selected for imaging as a function of their energy.  (+info)

Growth and differentiation of cultured fetal hepatocytes isolated various developmental stages. (4/334)

We examined the relationship between cell proliferation and differentiation of cultured rat fetal and newborn hepatocytes isolated from various developmental stages. The albumin production rate increased along with cell growth under in vitro culture and became maximal two days after the growth cessation. AFP was secreted by both fetal and newborn hepatocytes with growth ability. Furthermore, the responses to HGF addition in fetal hepatocyte cultures were observed in terms of growth stimulation and down-regulated of the Met receptor. We also studied the changes in RB and liver enriched transcription factors (C/EBPs) for investigating the mechanism underlying proliferation and differentiation of fetal hepatocytes. Western blot analysis of hepatocytes taken from various gestation stages of rat liver showed that the expression of RB and C/EBP beta increased as gestation stage proceeded. When RB antisense S-oligonucleotide was added to the culture medium, proliferation and AFP expression increased, while C/EBP alpha and albumin expressions decreased. These results indicated that the tumor suppressor gene product RB had a profound role not only in cell proliferation but also hepatocyte differentiation.  (+info)

Highly Th2-skewed cytokine profile of beta-lactam-specific T cells from nonatopic subjects with adverse drug reactions. (5/334)

A positive lymphocyte transformation test to beta-lactams (beta-L) was found in 12 of 29 subjects with adverse drug reaction (ADR) to beta-L, irrespective of either the type of clinical manifestation or the presence of specific serum IgE. Short-term T cell lines specific for penicillin G, amoxicillin, and ampicillin could be generated only from subjects with ADR (eight with positive and one with negative lymphocyte transformation test), while streptokinase and Dermatophagoides pteronyssinus group 1 (Der p 1)-specific T cells were obtained from all these subjects, from 7 atopic Der p-sensitive donors without history of ADR and 17 healthy nonatopic donors. Streptokinase-specific T cells from all subjects showed intracellular expression of IFN-gamma with poor or no IL-4, whereas Der p 1-specific T cells exhibited IFN-gamma but low or no IL-4 expression in nonatopics, and remarkable IL-4 expression in atopic donors. By contrast, all penicillin G-, ampicillin-, and amoxicillin-specific short-term T cell lines showed high intracellular expression of IL-4, IL-5, and IL-13, but poor or no expression of IFN-gamma, thus exhibiting a clear-cut Th2 profile. Accordingly, most penicillin G-specific T cell clones derived from two subjects with ADR released high concentrations of IL-4 alone or IL-4 and IFN-gamma. These data suggest that cytokines produced by Th2 cells play an important role in all beta-L-induced ADR, even when late clinical manifestations occur and an IgE-mediated mechanism is apparently indemonstrable.  (+info)

Human immune responses to the highly repetitive Plasmodium falciparum antigen Pf332. (6/334)

The B and T cell responses to EB200, a repetitive part of the Plasmodium falciparum antigen Pf332, were examined in malaria-exposed Senegalese adults. Most donors had high levels of antibodies to recombinant EB200 and 17 overlapping peptides spanning EB200. Taking proliferation and/or cytokine (interferon-gamma and interleukin-4) production as a measure of T cell activation, eight of the EB200-derived peptides induced responses in > 40% of the donors tested. There was no general association between the different types of T cell responses measured, emphasizing the importance of including multiple parameters when analyzing T cell responses and suggesting that EB200 induces functionally distinct T cell responses. The most efficient peptide for induction of proliferative responses was one previously shown to induce T cell responses in five different H-2 congenic mouse strains primed with EB200, suggesting that this is a universal T cell epitope. The presence of multiple B and T cell epitopes in EB200, widely recognized by humans, is important since EB200 has been shown to elicit protective antibody responses in monkeys and may be considered for inclusion in malaria subunit vaccines.  (+info)

Determination of different amino sugar 2'-epimerase activities by coupling to N-acetylneuraminate synthesis. (7/334)

A new procedure for quantitating the amount of N-acetyl-D-mannosamine (ManNAc) or ManNAc-6-phosphate produced by 2'-epimerase activities involved in sialic acid metabolism has been developed. The ManNAc generated by the action of N-acetyl-D-glucosamine (GlcNAc) and UDP-GlcNAc 2'-epimerases is condensed with pyruvate through the action of N-acetylneuraminate lyase and the sialic acid released is measured by the thiobarbituric acid assay. For the analysis of prokaryotic GlcNAc-6-phosphate 2'-epimerase, ManNAc-6-phosphate can also be evaluated by this coupled assay after dephosphorylation of the sugar phosphate. This system provides a sensitive, rapid, reproducible, specific and simple procedure (feasible with commercial reagents) for measuring amino sugar 2'-epimerases from eukaryotic and prokaryotic sources. The technique reported here permitted us to detect UDP-GlcNAc 2'-epimerase and GlcNAc 2'-epimerase in mammalian cell extracts and GlcNAc-6-phosphate 2'-epimerase in bacterial extracts.  (+info)

T-cell mediated autoimmunity to the insulinoma-associated protein 2 islet tyrosine phosphatase in type 1 diabetes mellitus. (8/334)

The target molecules of the T-cell response in type 1 diabetes, despite their pathogenic importance, remain largely uncharacterized, especially in humans. Interestingly, molecules such as insulin and glutamic acid decarboxylase (GAD) have been shown to be a target not only of autoantibodies, but also of autoreactive T-lymphocytes both in man and in the non-obese diabetic (NOD) mouse. In the present study we aimed to determine the existence of a specific T-cell response towards the insulinoma-associated protein 2 (IA-2) islet tyrosine phosphatase, a recently identified autoantigen which is the target of autoantibodies strongly associated with diabetes development. Human recombinant IA-2 produced in Escherichia coli, was tested for its reactivity with peripheral blood lymphocytes obtained from 16 newly diagnosed type 1 diabetic patients and from 25 normal controls, 15 of whom were HLA-DR-matched. A T-cell proliferation assay was performed in triplicate employing freshly isolated cells in the absence or in the presence of the antigen to be tested (at two different concentrations: 2 microg/ml and 10 microg/ml). A specific T-cell proliferation (defined as a stimulation index (S.I.) >/=3) was observed against IA-2 used at a concentration of 10 microg/ml (but not of 2 microg/ml) in 8/16 diabetic patients, in 1/15 HLA-DR-matched control subjects (P<0.01 by Fisher exact test) and in 0/10 of the remaining normal individuals. A statistically significant difference (P<0.003 by Mann-Whitney U test) was also observed in S.I. values between patients (3.1+/-1.4) and HLA-DR-matched controls (1.7+/-0.54) employing IA-2 at a concentration of 10 microg/ml. However, when IA-2 was used at a concentration of 2 microg/ml, the difference in S. I. between patients (1.65+/-0.8) and controls (1.0+/-0.3) did not reach statistical significance. In conclusion, these data show the presence of a specific, dose-dependent T-lymphocyte response against the IA-2 islet tyrosine phosphatase at the onset of type 1 diabetes. Consequently, this molecule appears to be a target not only at the B-lymphocyte but also at the T-lymphocyte level, reinforcing the potential pathogenic role of this autoantigen in the islet destructive process.  (+info)

A scintillation proximity assay for the Raf/MEK/ERK kinase cascade: high-throughput screening and identification of selective...A scintillation proximity assay for the Raf/MEK/ERK kinase cascade: high-throughput screening and identification of selective...
We have developed a quantitative scintillation proximity assay (SPA) that reproduces the Raf/MEK/ERK signal transduction pathway. The components of this assay include human cRaf1, MEK1, and ERK2 and a biotinylated peptide substrate for ERK2. cRaf1 was expressed as a his-tagged protein in insect cell …
WE-B-137-01: Plastic Scintillation Detectors: Present Status and Their Application for Quality Assurance and in Vivo Dosimetry....WE-B-137-01: Plastic Scintillation Detectors: Present Status and Their Application for Quality Assurance and in Vivo Dosimetry....
Development of plastic scintillation detector (PSD) systems for dosimetry has been evolving for two decades now. The subject area has been a topic of a keen research interest that has generated lot of publications lately. PSD systems are being introduced in the market place. Numerous PSD systems for External Beam Radiation Therapy and Brachytherapy have been proposed, most times differentiating from the original systems by slight changes in one or more components, such as the photodetector. However, few major technological and engineering innovations have enabled this new technology to be embraced by the community which helped launching these systems for commercialization (Standard Imaging, Radiadyne, etc.). Scintillation materials (plastic, scintillating fibers and liquid) have many properties that make them ideal for dosimetry including water equivalence and energy independence for MV photons, linearity with dose, dose rate independence, high spatial resolution and nanosecond fast response time.
TRI-CARB 5110TR 110 V Liquid Scintillation Counter - Emphor Life Analytical ScienceTRI-CARB 5110TR 110 V Liquid Scintillation Counter - Emphor Life Analytical Science
The Tri-Carb 4910TR liquid scintillation counter provides the popular standard features needed for research applications and the versatility to expand for environmental analysis with the optional ultralow-level and alpha/beta discrimination features.. The Tri-Carb 4910TR liquid scintillation counter provides high performance and flexibility for multi-application and multi-user laboratories detecting radioactivity in life science research, environmental monitoring and/or health physics assays. Optional Packages are available for High Sensitivity Counting of low activity samples and Alpha Beta Separation for unknown or mixed samples.. Exclusive Standard Features. ...
WGA PVT SPA 2G | PerkinElmerWGA PVT SPA 2G | PerkinElmer
SPA Scintillation beads are microspheres containing scintillant which emit light in the blue region of the visible spectrum. As a result, these beads are ideally suited to use with photomultiplier tube (PMT) counters such as the MicroBeta2 or TopCount.. Two types of core SPA Scintillation bead are available - yttrium silicate (YSi) and Polyvinyltoluene (PVT). PVT beads are plastic, larger in size, and stay in suspension longer than the crystalline YSi beads.. Scintillation proximity assay (SPA) is a homogeneous and versatile technology for the rapid and sensitive assay of a wide range of biological processes, including applications using enzyme and receptor targets, radioimmunoassays, and molecular interactions. When 3H, 14C, 33P, and 125I radioisotopes decay, they release β-particles (or Auger electrons, in the case of 125I). The distance these particles travel through an aqueous solution is dependent on the energy of the particle. If a radioactive molecule is held in close enough proximity to ...
PEI - YSI Beads, 500 MG | PerkinElmerPEI - YSI Beads, 500 MG | PerkinElmer
SPA Scintillation beads are microspheres containing scintillant which emit light in the blue region of the visible spectrum. As a result, these beads are ideally suited to use with photomultiplier tube (PMT) counters such as the MicroBeta2 or TopCount.. Two types of core SPA Scintillation bead are available - yttrium silicate (YSi) and Polyvinyltoluene (PVT). PVT beads are plastic, larger in size, and stay in suspension longer than the crystalline YSi beads.. Scintillation proximity assay (SPA) is a homogeneous and versatile technology for the rapid and sensitive assay of a wide range of biological processes, including applications using enzyme and receptor targets, radioimmunoassays, and molecular interactions. When 3H, 14C, 33P, and 125I radioisotopes decay, they release β-particles (or Auger electrons, in the case of 125I). The distance these particles travel through an aqueous solution is dependent on the energy of the particle. If a radioactive molecule is held in close enough proximity to ...
WGA PVT SPECIAL 25 X 500 MG | PerkinElmerWGA PVT SPECIAL 25 X 500 MG | PerkinElmer
SPA Scintillation beads are microspheres containing scintillant which emit light in the blue region of the visible spectrum. As a result, these beads are ideally suited to use with photomultiplier tube (PMT) counters such as the MicroBeta2 or TopCount.. Two types of core SPA Scintillation bead are available - yttrium silicate (YSi) and Polyvinyltoluene (PVT). PVT beads are plastic, larger in size, and stay in suspension longer than the crystalline YSi beads.. Scintillation proximity assay (SPA) is a homogeneous and versatile technology for the rapid and sensitive assay of a wide range of biological processes, including applications using enzyme and receptor targets, radioimmunoassays, and molecular interactions. When 3H, 14C, 33P, and 125I radioisotopes decay, they release β-particles (or Auger electrons, in the case of 125I). The distance these particles travel through an aqueous solution is dependent on the energy of the particle. If a radioactive molecule is held in close enough proximity to ...
Copper HIS-Tag PVT 250MG | PerkinElmerCopper HIS-Tag PVT 250MG | PerkinElmer
SPA Scintillation beads are microspheres containing scintillant which emit light in the blue region of the visible spectrum. As a result, these beads are ideally suited to use with photomultiplier tube (PMT) counters such as the MicroBeta2 or TopCount.. Two types of core SPA Scintillation bead are available - yttrium silicate (YSi) and Polyvinyltoluene (PVT). PVT beads are plastic, larger in size, and stay in suspension longer than the crystalline YSi beads.. Scintillation proximity assay (SPA) is a homogeneous and versatile technology for the rapid and sensitive assay of a wide range of biological processes, including applications using enzyme and receptor targets, radioimmunoassays, and molecular interactions. When 3H, 14C, 33P, and 125I radioisotopes decay, they release β-particles (or Auger electrons, in the case of 125I). The distance these particles travel through an aqueous solution is dependent on the energy of the particle. If a radioactive molecule is held in close enough proximity to ...
PS-PEI SPA Beads, 1G, F/D | PerkinElmerPS-PEI SPA Beads, 1G, F/D | PerkinElmer
SPA Imaging beads are microspheres containing scintillant which emit light in the red region of the visible spectrum. As a result, these beads are ideally suited to use with a CCD imager, such as PerkinElmerlj Viewlux™ CCD Imager.. Two types of core SPA Imaging bead are available - yttrium oxide (YOx) and Polystyrene (PS). A number of biological coatings also exist for each core bead type to enable receptor binding, enzyme, molecular interaction and radioimmunoassays to be investigated.. Scintillation proximity assay (SPA) is a homogeneous and versatile technology for the rapid and sensitive assay of a wide range of biological processes, including applications using enzyme and receptor targets, radioimmunoassays, and molecular interactions. When 3H, 14C, 33P, and 125I radioisotopes decay, they release β-particles (or Auger electrons, in the case of 125I). The distance these particles travel through an aqueous solution is dependent on the energy of the particle. If a radioactive molecule is ...
Membrane Binding YOX 25 X 500 MG | PerkinElmerMembrane Binding YOX 25 X 500 MG | PerkinElmer
SPA Imaging beads are microspheres containing scintillant which emit light in the red region of the visible spectrum. As a result, these beads are ideally suited to use with a CCD imager, such as PerkinElmerlj Viewlux™ CCD Imager.. Two types of core SPA Imaging bead are available - yttrium oxide (YOx) and Polystyrene (PS). A number of biological coatings also exist for each core bead type to enable receptor binding, enzyme, molecular interaction and radioimmunoassays to be investigated.. Scintillation proximity assay (SPA) is a homogeneous and versatile technology for the rapid and sensitive assay of a wide range of biological processes, including applications using enzyme and receptor targets, radioimmunoassays, and molecular interactions. When 3H, 14C, 33P, and 125I radioisotopes decay, they release β-particles (or Auger electrons, in the case of 125I). The distance these particles travel through an aqueous solution is dependent on the energy of the particle. If a radioactive molecule is ...
Contribution of alpha4beta1 integrin to the antiallergic effect of levocabastine | IRIS Università degli Studi di CataniaContribution of alpha4beta1 integrin to the antiallergic effect of levocabastine | IRIS Università degli Studi di Catania
Levocabastine is an antiallergic drug acting as a histamine H1-receptor antagonist. In allergic conjunctivitis (AC), it may also antagonize up-regulation of the intercellular adhesion molecule-1 (ICAM-1) expressed on epithelial conjunctival cells. However, little is known about its effects on eosinophils, important effector cells in AC. The adhesion molecule integrin alpha(4)beta(1) is expressed in eosinophils; it interacts with the vascular cell adhesion molecule-1 (VCAM-1) and fibronectin (FN) in vascular endothelial cells and contributes to eosinophil activation and infiltration in AC. This study provides evidence that in a scintillation proximity assay levocabastine (IC(50) 406 microM), but not the first-generation antihistamine chlorpheniramine, displaced (125)I-FN binding to human integrin alpha(4)beta(1) and, in flow cytometry analysis, levocabastine antagonized the binding of a primary antibody to integrin alpha(4) expressed on the Jurkat cell surface. Levocabastine, but not ...
A scintillation counter for measurement of I131 uptake in the thyroid gland - University of Oklahoma LibrariesA scintillation counter for measurement of I131 uptake in the thyroid gland - University of Oklahoma Libraries
div class=citation vocab=http://schema.org/,,i class=fa fa-external-link-square fa-fw,,/i, Data from ,span resource=http://link.libraries.ou.edu/portal/A-scintillation-counter-for-measurement-of-I131/gO1eaNur4-s/ typeof=Book http://bibfra.me/vocab/lite/Item,,span property=name http://bibfra.me/vocab/lite/label,,a href=http://link.libraries.ou.edu/portal/A-scintillation-counter-for-measurement-of-I131/gO1eaNur4-s/,A scintillation counter for measurement of I131 uptake in the thyroid gland, by William J. MacIntyre, (electronic resource),/a,,/span, - ,span property=potentialAction typeOf=OrganizeAction,,span property=agent typeof=LibrarySystem http://library.link/vocab/LibrarySystem resource=http://link.libraries.ou.edu/,,span property=name http://bibfra.me/vocab/lite/label,,a property=url href=http://link.libraries.ou.edu/,University of Oklahoma Libraries,/a,,/span,,/span,,/span,,/span,,/div ...
Basic Physics of Nuclear Medicine/Scintillation Detectors - Wikibooks, open books for an open worldBasic Physics of Nuclear Medicine/Scintillation Detectors - Wikibooks, open books for an open world
The second type of radiation detector we will discuss is called the scintillation detector. Scintillations are minute flashes of light which are produced by certain materials when they absorb radiation. These materials are variously called fluorescent materials, fluors, scintillators or phosphors.. If we had a radioactive source and a scintillator in the lab we could darken the room, move the scintillator close to the source and see the scintillations. These small flashes of light might be green or blue or some other colour depending on the scintillator. We could also count the number of flashes produced to gain an estimate of the radioactivity of the source, that is the more flashes of light seen the more radiation present.. The scintillation detector was possibly the first radiation detector discovered. You might have heard the story of the discovery of X-rays by Wilhelm Roentgen in 1895. He was working one evening in his laboratory in Wurzburg, Germany with a device which fired a beam of ...
LIQUID SCINTILLATOR FOR 3D DOSIMETRY FOR RADIOTHERAPY MODALITIES - Patent applicationLIQUID SCINTILLATOR FOR 3D DOSIMETRY FOR RADIOTHERAPY MODALITIES - Patent application
0039] Hence, devices useful for dosimetry of a broad range of complex radiotherapy modalities, such as intensity-modulated proton therapy ("IMPT") for proton therapy, using liquid scintillator detectors are provided herein. The systems presented herein may be useful for patient-specific quality assurance ("QA"), providing fast, accurate, and high-resolution dosimetry. These systems may provide real-time dosimetric information in both 2D planes and 3D volumes for radiation beams of either photons or protons. The radiation beam is interacting with the LS material to produce visible light. This light may be acquired in realtime with one or more high-sensitivity/high-speed CCD cameras. (As used herein, "processing in near realtime" or "realtime" generally refer to processing data without intentional delay, given the limitations of the system and the time required to accurately measure the data.) Processing these images in near realtime allow the characterization of the radiation beams. (As used ...
Calibration of a Liquid Scintillator with Geiger-Mueller Counters by William F. Hartman"Calibration of a Liquid Scintillator with Geiger-Mueller Counters" by William F. Hartman
It was the purpose of this experiment to examine the difference in the density determinations and, since the Geiger tube threshold is much lower, to calibrate the liquid scintillator so that it is capable to determining the absolute particle density with greater accuracy.
PMT calibration of a scintillation detector using primary scintillationPMT calibration of a scintillation detector using primary scintillation
We have studied the calibration of PMTs in scintillation detectors, inducing single electron response on the PMT from primary scintillation produced by x-ray interaction. The results agree with those obtained by the commonly used single electron response (SER) method, which uses LED light pulses to induce the PMT SER. The use of the primary scintillation for PMT calibration will be convenient in situations where the PMT is already in situ, when it becomes difficult or even impossible to apply the SER method, e.g. in commercial sealed scintillator/PMT devices. Furthermore, we have experimentally investigated the possibility of fitting the high-charge tail of the PMT SER pulse-height distribution to an exponential function, inferring the PMT gain from the inverse of the exponent. The results of the exponential fit method agree with those obtained by the SER method for pulse-height distributions resulting from an average number of around 1.0 photoelectrons reaching the first dynode per ...
FlashPlate HTS, Basic Microplate, 384-well, 20 Plates | PerkinElmerFlashPlate HTS, Basic Microplate, 384-well, 20 Plates | PerkinElmer
FlashPlate® is a white polystyrene microplate, designed for high-volume, homogeneous radiometric assays, based upon the principle of scintillation proximity. The interior of each well is permanently coated with a thin layer of polystyrene-based scintillant which provides a platform for non-separation assays using a variety of isotopes (e.g.,3H, 125I, 14C and 33P) without the addition of liquid scintillation cocktail. FlashPlate is available in both 96-well and 384-well formats.. ...
Patente US6909097 - Scintillation detector, system and method providing energy and position ... - Google PatentesPatente US6909097 - Scintillation detector, system and method providing energy and position ... - Google Patentes
A radiation detector, in particular a gamma camera, is constructed and operated in such a fashion that only a predetermined number of light sensors (such as PMTs) adjoining each other in a cluster are used to generate a signal with amplitude and event position information. The camera may also use an array of individual scintillation elements (crystals) in place of a single crystal, with certain advantages obtained thereby. According to another aspect of the invention, there is a reflector sheet that defines an array of apertures through which scintillation light can pass from the scintillation crystal to a plurality of light sensors optically coupled to an optical window in an array corresponding to the array of apertures in the reflector.
Scintillation camera legal definition of scintillation cameraScintillation camera legal definition of scintillation camera
Definition of scintillation camera in the Legal Dictionary - by Free online English dictionary and encyclopedia. What is scintillation camera? Meaning of scintillation camera as a legal term. What does scintillation camera mean in law?
Measurement of tritium with plastic scintillator surface improvement with plasma treatment (Journal Article) | SciTech ConnectMeasurement of tritium with plastic scintillator surface improvement with plasma treatment (Journal Article) | SciTech Connect
Tritium is usually measured by using a liquid scintillation counter. However, liquid scintillator used for measurement will become radioactive waste fluid. To solve this issue, we have developed a method of measuring tritium samples with plasma-treated plastic scintillator (PS)sheets (Plasma method). The radioactive sample is held between 2 PS sheets and the whole is enclosed in a a low-potassium glass vial. With the Plasma method of 2-min plasma treatment, we have obtained measurement efficiency of 48 ± 2 % for 2 min measurement of tritium except for tritiated water. The plasma treatment makes the PS surface rough and hydrophilic which contributes to improve the contact between tritium and PS. On the other hand, it needed almost 6 hours to obtain constant measurement efficiency. The reason was that the dry-up handling in the vial needed longer time to vaporize H{sub 2}O molecules than in the air. We tried putting silica gel beads into vials to remove H{sub 2}O molecules from PS sheet surface ...
HTS - High-Throughput Screening FacilityHTS - High-Throughput Screening Facility
Instruments. The HTS facility houses state-of-the-art liquid handlers and multi-mode plate readers that can be integrated into screening systems for automated HTS applications. The suite of plate readers contains instruments with varying sensitivities for all common modalities including absorbance, fluorescence, time-resolved fluorescence, fluorescence polarization and luminescence. Additionally, we offer label-free, alpha screen, scintillation proximity and high-content screening technologies. Liquid handling capabilities allow for volume transfers ranging from 2.5 nanoliters to liters, in various combinations of fixed and random plate arrays. Readers and liquid handlers are available for walk-up use, as well as automated screening. Furthermore, the facility staffs a full-time engineer to ensure the instrumentation meets or exceeds industry specifications for operation. Data Analysis and Storage. The informatics and statistical capabilities of the HTS facility include data storage, archival and ...
Liquid Scintillation Fluid Policy | Environmental Health and SafetyLiquid Scintillation Fluid Policy | Environmental Health and Safety
Scintillation fluids based on toluene or xylene will no longer be available except by special order. Principal investigators who are authorized to use radioactive materials or are applying for such use may petition the Executive Committee for a scintillation fluid exception. Petitions must be submitted in writing and clearly state why the use of a scintillation counting fluid with a flash point , 140o F is required for their scintillation counting needs ...
Scintillation Products, Reviews and Suppliers on SelectScienceScintillation Products, Reviews and Suppliers on SelectScience
Read user reviews, compare products and contact manufacturers of Scintillation products, including particle counters, scintillation counters and radiometers on SelectScience.
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Radioactivity Analysis. Blood and plasma samples (0.1 ml), urine samples (0.2 g), and cage rinses (0.5 g) were added to Ultima Gold XR scintillation cocktail. Feces were homogenized in water, and samples (0.2 g) were combusted using a Packard model 307 Sample Oxidizer (PerkinElmer Life and Analytical Sciences). Cage wipes were extracted in water using gentle shaking, and samples (0.5 g) were added to the scintillation fluid. The pooled mouse carcasses (3/sample) were cut into pieces and digested using 1 N NaOH, and samples (0.5 g) were weighed and decolorized using 30% H2O2. Ultima Gold XR scintillation cocktail was added, and the samples were counted after sitting overnight at room temperature. Each rat brain was homogenized using a probe-type homogenizer at a 1:1 ratio (w/w) with a solution of 36 μM tranylcypromine, an MAO inhibitor, before samples were combusted. All samplers were analyzed by LSC using Packard model 2900TR liquid scintillation counters.. Bioanalytical Analysis for Bicifadine ...
Items where Author is Billas, I - Surrey Research Insight Open AccessItems where Author is "Billas, I" - Surrey Research Insight Open Access
Dimitriadis, Alexis, Silvestre Patallob, I, Billas, I, Duane, S, Nisbet, Andrew and Clark, CH (2017) Characterisation of a plastic scintillation detector to be used in a multicentre stereotactic radiosurgery dosimetry audit ...
Evaluation of the Properties of Cemented Liquid Scintillator Wastes under Flooding Scenario in Various Aqueous MediaEvaluation of the Properties of Cemented Liquid Scintillator Wastes under Flooding Scenario in Various Aqueous Media
International Scholarly Research Notices is a peer-reviewed, Open Access journal covering a wide range of subjects in science, technology, and medicine. The journals Editorial Board as well as its Table of Contents are divided into 108 subject areas that are covered within the journals scope.
Study Notes: LS CountingStudy Notes: LS Counting
Liquid scintillation counting (LS Counting) is a laboratory-based technique that uses a Liquid Scintillation Counter (LSC) to count the radioactive emissions from a liquid sample. It is often used in the biological sciences to measure the uptake of radioactive isotopes into biological materials. The different forms of an element are called isotopes.. For instance, the nucleus of the element phosphorus has 15 protons but it may contain differing numbers of neutrons. If it has 13 neutrons it is called 28P (15 + 13 = 28) and if it has 19 neutrons it is called 34P. In fact phosphorus exists as 7 different isotopes:. 28P, 29P, 30P, 31P,32P, 33P, 34P. 31P is the most abundant form and is stable whereas the other isotopes may be unstable and emit radioactivity. In the case of 32P, a beta particle is emitted.. LSC is a method of counting radioactive emissions from a limited range of radionuclides. The common isotopes used include:. ...
Forschungszentrum Jülich - Technische Aspekte der Positronen EmissionstomographieForschungszentrum Jülich - Technische Aspekte der Positronen Emissionstomographie
Typically, a PET-scanner consists of a detector ring with 60 cm diameter and 20 cm length inside which the patient is positioned. For brain studies the patient bed is positioned in such a way that the entire brain is within the field of view. To investigate the entire patient the bed is moved step-by-step. The detector consists of scintillation detectors with scintillation crystals coupled to photomultipliers. The radiation, which is emitted from the patient after the injection of a weak radioactively labelled substance (radiotracer), causes light pulses within the scintillation crystals. This light is converted to electrical signals by the photomultiplier. A detector is linked to opposing detectors by a coincidence logic: if the radiation hits two opposing detectors within a time interval of, e.g. 6 ns, it is assumed that the radiation comes from a radiotracer molecule located on the line connecting the two detectors. During the PET study, which can last from a few minutes up to two or three ...
Scintigraphy - WikipediaScintigraphy - Wikipedia
Scintillography is mainly used in scintillation cameras in experimental physics. For example, huge neutrino detection underground tanks filled with tetrachloroethylene are surrounded by arrays of photo detectors in order to capture the extremely rare event of a collision between the fluids atoms and a neutrino. Another extensive use of scintillography is in medical imaging techniques which use gamma ray detectors called gamma cameras. Detectors coated with materials which scintillate when subjected to gamma rays are scanned with optical photon detectors and scintillation counters. The subjects are injected with special radionuclides which irradiate in the gamma range inside the region of interest, such as the heart or the brain. A special type of gamma camera is the SPECT (Single Photon Emission Computed Tomography). Another medical scintillography technique, the Positron-emission tomography (PET), which uses the scintillations provoked by electron-positron annihilation phenomena. ...
AID 629721 - Displacement of [3H]-8-OH-DPAT from 5-HT1A receptor in rat hippocampus by liquid scintillation counting - PubChemAID 629721 - Displacement of [3H]-8-OH-DPAT from 5-HT1A receptor in rat hippocampus by liquid scintillation counting - PubChem
BioAssay record AID 629721 submitted by ChEMBL: Displacement of [3H]-8-OH-DPAT from 5-HT1A receptor in rat hippocampus by liquid scintillation counting.
Fast determination of indoor radon (222Rn) concentration using liquid scintillation counting | SpringerLinkFast determination of indoor radon (222Rn) concentration using liquid scintillation counting | SpringerLink
The indoor 222Rn radionuclide was directly absorbed in typical 20 ml glass scintillation vials by passing −3 dm3of ambient air through 16 ml of water-immiscible non-volataile scintillation cocktail...
Measurement of Regional Cerebral Blood Flow With 133Xenon and a Multiple-Crystal Scintillation Camera | StrokeMeasurement of Regional Cerebral Blood Flow With 133Xenon and a Multiple-Crystal Scintillation Camera | Stroke
A method was devised to measure gray and white matter cerebral blood flow simultaneously in multiple regions of the brain using 133Xenon and a multiple-crystal scintillation camera. Following magnification cerebral arteriography, 133Xe was injected into the internal carotid artery and the washout of tracer was monitored with a scintillation camera which consists of 294 individually collimated NaI (TI) crystals. These data, obtained from each crystal overlying the brain, were processed by a weighted least-squares nonlinear regression technique. The blood flow rates of the rapid and slow compartments were calculated by the Kety-Schmidt formula along with 95% confidence limits for each measurement.. In four patients, local increases or decreases in regional cerebral flow were correlated with areas of pathology. In one patient with a cerebral arteriovenous malformation, regions of local shunting of tracer were identified. Application of a three-compartment analysis to these curves permitted ...
Radioisotope properties and precautions | Environmental Health and Safety - McGill UniversityRadioisotope properties and precautions | Environmental Health and Safety - McGill University
Select the radioisotope Calcium Ca-45 Carbon C-14 Chrome Cr-51 Cobalt Co-57 Hydrogen H-3 Iodine I-125 Iodine I-131 Phosphorus P-32 Phosphorus P-33 Sodium Na-22 Sulfur S-35 ALI = Annual Limit of Intake EQ = Exemption Quantity For more information on other radioisotopes go to the Canadian Nuclear Safety Commission (CNSC) website. Ca-45 - Properties and Precautions Radiotoxicity Low to medium Half life 163 days Emission Moderate Energy Beta (0.257 MeV) Range in air 52 cm Critical organs/tissue Bone Precautions Gloves, Lab coat, Aerosol control, Contamination control Shielding 3 mm, plexiglas (lucite shield) Monitor beta-probe, wipes counted by liquid scintillation counter ALI 30 (ingestion) and 9 (inhalation) EQ 1 MBq TOP OF PAGE C-14 - Properties and Precautions Radiotoxicity Low to medium Half life 5730 years Emission Moderate Energy Beta (0.156 MeV) Range in air 24 cm Critical organs/tissue Fatty tissue Precautions Gloves, lab coat, aerosol control, contamination
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Receptor Binding Assay. Competitive binding assays were carried out to determine the binding affinities of opioid compounds for μ-, δ-, and κ-opioid receptors. Membrane protein (100 μg/tube) prepared from CHO-μ, -δ, or -κ cells was incubated in 50 mM Tris-HCl buffer (pH 7.4) containing 2 nM [3H]diprenorphine and different concentrations of compounds in a total volume of 0.5 ml for 30 min at 37°C. Nonspecific binding was determined with 50 μM naloxone. The binding was terminated by inserting the assay tubes into ice-cold water, and membrane-bound [3H]diprenorphine was rapidly separated by filtration through GF/C filters. The filters were washed with 5 ml of ice-cold Tris-HCl buffer three times, and filter-bound radioactivity was counted by a liquid scintillation counter.. [35S]GTPγS Binding Assay. [35S]GTPγS binding assay was used as a functional measure of the agonist efficacy and potency of these compounds for the μ-opioid receptor. Membrane protein (100 μg/tube) prepared from ...
AID 646449 - Displacement of [3H]-LSD from human full length cloned 5HT6 receptor expressed in human HEK293 cells by liquid...AID 646449 - Displacement of [3H]-LSD from human full length cloned 5HT6 receptor expressed in human HEK293 cells by liquid...
BioAssay record AID 646449 submitted by ChEMBL: Displacement of [3H]-LSD from human full length cloned 5HT6 receptor expressed in human HEK293 cells by liquid scintillation counter.
Scintillation Vials - Vials - Laboratory SuppliesScintillation Vials - Vials - Laboratory Supplies
Suitable for liquid scintillation counting, gamma counting and chromatography applications. Choose from a variety of vial, cap and liner materials. Scintillation vial materials include glass, HDPE and PP. Vials are available with caps attached or caps packaged separately.. ...
Scintillators or the key to a successful endeavourScintillators or the key to a successful endeavour
Beamlines on synchrotrons worldwide need a lot of specific components in order to carry out specialised and state of the art experiments. Scintillators are essential components which make X-rays visible so they can be detected with CCD or CMOS cameras.. The sub-micrometre resolution and high image contrast demanded by todays experiments require scintillator films with thicknesses in the range 1-20 μm as well as providing high optical quality and uniformity. Thin scintillators minimise degradations due to focusing defects, diffraction and spherical aberrations, therefore boosting the image contrast and spatial resolution. But the sophisticated techniques required to grow such crystals and their high specificity means that very thin single crystal film scintillators are not commercially available.. In April 2010, the ESRF established a unique liquid phase epitaxy facility for single crystal film scintillators. Liquid phase epitaxy is a technique whereby scintillating crystal layers are grown on ...
Scintillator | Scintillation CrystalsScintillator | Scintillation Crystals
Marketech offers custom fabricated components and semi-finished stock from tungsten, refractory metals, ceramics, sapphire, heat sinks, crystals
Cardiac output measurement by the injection method without arterial samplingCardiac output measurement by the injection method without arterial sampling
Cardiac output was measured by the injection method, using I131-labeled human serum albumin as indicator, and measuring concentration-time curves through the intact skin with a collimated scintillation counter. Although, in principle, any number of blood vessels could be used as the measuring site, it was found that because of recirculation, ... read more suitable curves were obtained only if the counter was directed toward the head or the heart. Cardiac output values calculated from these curves were compared with values found with the classical sampling method. Head, heart, and arterial sampling curves were measured simultaneously with one injection of radioactive indicator. The measurements show that a head curve could be used in measuring cardiac output by the injection method, but it is not very successful because of the rather high standard deviation of the result (25 per cent). A heart curve, however, can successfully replace an arterial sampling curve. The accuracy of heart and arterial ...
1996 Department of Energy list of UCLA human radiation experiments - EnviroReporter.com1996 Department of Energy list of UCLA human radiation experiments - EnviroReporter.com
UCLA-1. Early Experimental Imaging of the Thyroid Gland Using Iodine 131. IN 1951, the University of California, Los Angeles conducted a series of tests on humans to study the uptake of radioiodine into the thyroid gland. Additional tests were made on patients at the Sawtelle Veterans Hospital. The main purpose of this study was to test a new automatic scanner and recorder.. Initial scans were made using a collimated gamma scintillation counter. This equipment enabled a record to be obtained on which an image of the gland was visible and which the researchers concluded was better than a total activity count for clinical studies of thyroid disease.. The second set of scans was made on a frozen tissue preparation obtained from a terminal patient who had been given 3 millicuries of iodine-131, 14 hours before his death. The measured total activity of the thyroid gland at the time it was scanned was about 50 microcuries.. The results of these tests led to increased use of this equipment for ...
A method to quantify binding of unlabeled peptides to class I MHC molecules and detect their allele specificity. - Radcliffe...A method to quantify binding of unlabeled peptides to class I MHC molecules and detect their allele specificity. - Radcliffe...
A general method has been developed for measuring the stabilization of class I MHC molecules in extracts of the mutant cell lines .174/T2 and RMA-S. 35S-Met-labeled class I molecules which have been stabilized by peptides in vitro are immunoprecipitated with conformation dependent monoclonal antibodies and electrophoresed on polyacrylamide gels. The heavy and light chains are excised from the dried gel and quantified on a flat bed scintillation counter. The stabilizing effect of peptides on class I molecules in vitro correlates well with peptide binding measured by direct methods and can be therefore used to assess peptide binding affinity. We show that a peptide from HIV-1 gag (which has a high affinity for Db) is a CTL epitope restricted through Db, and also use the assay to analyse the effects of amino acid substitution on peptide affinity. In addition, the effect of a given peptide on a class I molecule within a mixture of human class I molecules can be distinguished by immunoprecipitation with the
Analysis of the Radiocardiogram in Heart Failure | Circulation ResearchAnalysis of the Radiocardiogram in Heart Failure | Circulation Research
A scintillation counter permits the use of very low doses of I131-albumin in the recording of radiocardiograms. In the presence of mild heart failure there is a distinct widening of the interval between the humps derived from the right and left heart. Application of the principle of three-compartment serial dilution suggests that this prolongation may be due in large part to reduced cardiac output; however, cardiac dilatation may contribute significantly. Although radiocardiographic tracings represent time concentration curves, wide angle counting over the heart does not permit a reliable direct estimate of cardiac output. The chief source of error lies in the variable contribution of surrounding extracardiac tissue to the total activity which is recorded.. ...
JobberClub Job PortalJobberClub Job Portal
Advertisement No. 16/2016. Last Date of Receipt of Applications : 05.06.2017. The CSIR-lnstitute of Himalayan Bioresource Technology, Palampur (CSIR-IHBT) is one of the National Institute under the Council of Scientific & Industrial Research which is an Autonomous Body. It is located on a 250 acres of land with the backdrop of snow-covered peaks of Dhauladhar Range in salubrious climate. The Institute is engaged in research and technology development programmes for sustainable management of bioresources of the Himalayas. The Institute has successfully carried out mission-oriented projects on tea, temperate floriculture and aromatic plants and is well equipped for Tissue culture and Biotechnology. Facilities include Tea Processing Unit, FRP greenhouses and equipments like GC-MS, FT-IR, Ultrascan, Automated DNA sequencers, Phosphoimager, Q-TOF, XL Laser densitometer, HPLCs, MALDI-TOF.CONFOCAL MICROSCOPY, C02 Extractor, FPLC, HP-TLC, IRGA, NMR, Scintillation counter, computer networking ...
Research | Biochemistry Ph.D. ProgramResearch | Biochemistry Ph.D. Program
FT-IR, JASCO Circular Dichroism J-815, UV-Vis spectrophotometer, Fluorescence spectrophotometer, Micro-isothermal titration calorimeter, Differential scanning calorimeter, Fluorescent/ luminescent/ UV/ Vis plate reader (Biotek, Synergy 2), High speed and ultra-speed centrifuges Scintillation Counters, FPLC, Thermocyclers, Computer Cluster, PCR, real time, single color PCR, real time, multicolor, DNA sequencers, Electrospray Mass Spectrometry, CHI Scanning Potentiostat, HPLC, Confocal Imagining Microscope, GUAVA Cell Cytometer, Fluorescence microscope, Multimode plate reader, Atomic force microscope, Tissue culture facilities, Phoshorimager, Nanodrop and others. ...
Scintillation meter | definition of Scintillation meter by Medical dictionaryScintillation meter | definition of Scintillation meter by Medical dictionary
Looking for online definition of Scintillation meter in the Medical Dictionary? Scintillation meter explanation free. What is Scintillation meter? Meaning of Scintillation meter medical term. What does Scintillation meter mean?
Barrier Properties of the Spinal Meninges Are Markedly Decreased by Freezing Meningeal Tissues | Anesthesiology | ASA...Barrier Properties of the Spinal Meninges Are Markedly Decreased by Freezing Meningeal Tissues | Anesthesiology | ASA...
Fluid reservoirs on either side of the tissue were filled with bicarbonate buffered mock cerebrospinal fluid; oxygen (95%) and carbon dioxide (5%) were bubbled vigorously through the mock cerebrospinal fluid to maintain normal pH level and to provide mixing. After allowing 30 min for equilibration to 37 [degree sign]C, the study drug was added to the epidural side of the meninges. For this experiment, unlabelled morphine sulfate (0.1-mg base) and x [micro sign]Ci14C-labeled morphine sulfate (specific activity = 82 x 103[micro sign]Ci/mg; New England Nuclear, Boston, MA) were added to the donor reservoir at t = 0. Thereafter at 5-min intervals, 100-[micro sign]l samples were removed from donor and recipient reservoirs and placed in liquid scintillation vials for subsequent determination of morphine concentration. Decays/min were counted in a Packard TriCarb 2000 liquid scintillation counter (Packard Instruments, Downers Grove, IL; uncertainty of measurement 4% for 2,500 total counts). At the end ...
Items where Year is 1979 - Durham e-ThesesItems where Year is 1979 - Durham e-Theses
Adams, T. A. (1979) The characteristics of a national digital topographic database. Masters thesis, Durham University.. Adams, Timothy A. (1979) Characteristics of a national topographic digital database. Masters thesis, Durham University.. Addinall, P. (1979) The understanding of nature in the Old Testament: an investigation of some scholarly views. Masters thesis, Durham University.. Al-Dargazelli, Shetha Selman (1979) The development of gas scintillation counters for high count rate x-ray detection. Doctoral thesis, Durham University.. Al-Din, Nadia Yussef Gamal (1979) Selection for university education in egypt:: practice, philosophy and perspective. Doctoral thesis, Durham University.. Al-Imam, Fatima Muhammad Nejib (1979) Abdallah ibn Umar Ibn Al-Khattab. Masters thesis, Durham University.. Alexander, K. I. (1979) Studies in plant competition. Masters thesis, Durham University.. Andrew, J. (1979) The administration of Durham County: a comparative assessment 1830 to 1895. Masters thesis, ...
Conversion of essential fatty acids by Delta 6 desaturase in dog liver microsomesConversion of essential fatty acids by Delta 6 desaturase in dog liver microsomes
Long Chain Polyunsaturated Fatty Acids (LCPUFA) are physiologically important precursors for eicosanoids, leukotrienes, and prostanoids. Desaturation of essential fatty acids (EFAs) by []6-desaturase is considered the rate-limiting step in conversion of EFAs to LCPUFA. This study was designed to study the conversion of EFAs by []6-desaturase in dog liver microsomes. Microsomes were prepared using fresh liver from healthy dogs. Microsomes were incubated with ¹⁴C labeled 18 carbon EFA substrates. Following incubation, lipids were extracted, saponified and phenacylated. The resulting fatty acid phenacyl esters (FAPES) were separated by HPLC. Radioactivity was measured with a liquid scintillation counter, converted to enzymatic activity, and expressed as pmol/min/mg protein. Using 18:3n-3 as substrate, the apparent []6-desaturase maximal velocity was 50.9 pmol/min/mg protein and using 18:2n-6 substrate, the maximal velocity was 5.4 pmol/min/mg protein. Apparent K[] values were 20.8 []M for ...
Inorganic Scintillators Market worth 330.7 Million USD by 2021Inorganic Scintillators Market worth 330.7 Million USD by 2021
Early buyers will receive 10% customization on reports.. By scintillation material, the inorganic scintillators market is categorized into Sodium Iodide (NaI), Cesium Iodide (CsI), Lutetium Oxyorthosilicate (LSO) and Lutetium-yttrium Oxyorthosilicate (LYSO), Bismuth Germanate Oxide (BGO), Others [Barium Fluoride (BaF2), Lead Tungstate (PbWO4), Cadmium Tungstate (CdWO4), Cerium Bromide (CeBr3), Lanthanum Bromide (LaBr3), and Gadolinium Orthosilicate (GSO)]. The sodium iodide (NaI) segment is expected to command the largest share of the global inorganic scintillators market, by scintillation material in 2016. This is attributed to factors such as rising application horizon of sodium iodide, rise in homeland security expenditure to combat terrorism worldwide, and increasing number of nuclear power plants. However, the lutetium oxyorthosilicate (LSO) & lutetium-yttrium oxyorthosilicate (LYSO) segment is expected to grow at the highest CAGR during the forecast period. This is mainly due to its ...
Gamma spectroscopy - WikipediaGamma spectroscopy - Wikipedia
The equipment used in gamma spectroscopy includes an energy-sensitive radiation detector, electronics to process detector signals produced by the detector, such as a pulse sorter (i.e., multichannel analyzer), and associated amplifiers and data readout devices to generate, display, and store the spectrum. Other components, such as rate meters and peak position stabilizers, may also be included.. The most common detectors include sodium iodide (NaI) scintillation counters and high-purity germanium detectors.. Gamma spectroscopy detectors are passive materials that wait for a gamma interaction to occur in the detector volume. The most important interaction mechanisms are the photoelectric effect, the Compton effect, and pair production. The photoelectric effect is preferred, as it absorbs all of the energy of the incident gamma ray. Full energy absorption is also possible when a series of these interaction mechanisms take place within the detector volume. When a gamma ray undergoes a Compton ...
Powder X-Ray Diffractometer | Research | Memorial University of NewfoundlandPowder X-Ray Diffractometer | Research | Memorial University of Newfoundland
Our lab is equipped with a Rigaku Ultima IV x-ray diffractometer with a copper x-ray source and a scintillation counter detector. The Ultima IV, with Rigakus patented Cross Beam Optics (CBO), is a flexible, multi-purpose XRD. It incorporates fully automatic alignment and allows for fast, easy switching between focusing and parallel beam geometries without the need to reconfigure the system. Other features of the Ultima IV at Memorial University are the automatic 10-position sample changer with spinner and the high temperature (1500oC) attachment.. ...
UW: Facilities | Department of Animal Science | University of WyomingUW: Facilities | Department of Animal Science | University of Wyoming
Research laboratories specializing in lipid, protein, growth, and food microbiology abattoir and contain the following equipment: Gas chromatograph, scintillation counter, centrifuges, microfuges, gel electrophoresis apparatus for protein, DU-20 spectrophotometer, sterile hood and incubator, water baths, pH meters, freeze dryers, vacuum pumps, refrigerators, mixer homogenizers, slab dryer, fluorescence spectrophotometer, calorimeter, balances, and tissumizers.. The Department of Animal Science maintains a 1700 square feet reproductive biology laboratory with three small (300 square feet) adjacent laboratories equipped for cell culture, histology, and sample extraction and preparation. The cell culture room is equipped with a laminar-flow hood and a CO2 incubator (Flow Labs #1500). In addition, equipment necessary for modern molecular biology procedures has been provided.. ...
Anthracene 10551-EAnthracene 10551-E
Intermediate For dyes, in manufacture of anthraquinone, in production of plastics & fibers, diluent for wood preservatives, scintillation counter crystals, organic semiconductor research, occurs in coal tar, smoked food (Merck 1989). Associated with tobacco: reported either as a natural component of tobacco, pyrolysis product (in tobacco smoke), or additive for one or more types of tobacco products.. ...
Laser gas detector systems for greenhouse gas emissions monitoring on Environmental XPRTLaser gas detector systems for greenhouse gas emissions monitoring on Environmental XPRT
Article Laser gas detector systems for greenhouse gas emissions monitoring. Two types of portable laser based gas detector for measuring emissions of the greenhouse gases carbon dioxide (CO2) and methane (CH4) from oil and gas operations are describe...
Neutrino phenomenology of very low-energy seesaw scenarios<...Neutrino phenomenology of very low-energy seesaw scenarios<...
TY - JOUR. T1 - Neutrino phenomenology of very low-energy seesaw scenarios. AU - De Gouvêa, André. AU - Jenkins, James. AU - Vasudevan, Nirmala. PY - 2007/1/29. Y1 - 2007/1/29. N2 - The standard model augmented by the presence of gauge-singlet right-handed neutrinos proves to be an ideal scenario for accommodating nonzero neutrino masses. Among the new parameters of this "new standard model" are right-handed neutrino Majorana masses M. Theoretical prejudice points to M much larger than the electroweak symmetry breaking scale, but it has recently been emphasized that all M values are technically natural and should be explored. Indeed, M around 1-10eV can accommodate an elegant oscillation solution to the liquid scintillator neutrino detector (LSND) anomaly, while other M values lead to several observable consequences. We consider the phenomenology of low-energy (M 1keV) seesaw scenarios. By exploring such a framework with three right-handed neutrinos, we can consistently fit all oscillation ...
SAX Low-Energy Gas Scintillation Proportional Counter (LE-GSPC): calibration and system performance | (1995) | Martin | ...SAX Low-Energy Gas Scintillation Proportional Counter (LE-GSPC): calibration and system performance | (1995) | Martin | ...
The low energy gas scintillation proportional counter (LE-GSPC) is an imaging x-ray spectrometer. It is one of the narrow field instruments on board the SAX satellite and covers the lower energy range from 0.1 to 10 keV. The low energy response of the detector is achieved by using a driftless gas cell and a thin multilayer polyimide foil as entrance window. The overall design of the imaging GSPC for space application is described. Using unit level and system level calibration data, acquired at a synchrotron and a long beam x-ray source, the capabilities both in terms of energy and position resolution are discussed. The overall efficiency of the instrument which includes the mirrors effective area, the entrance windows transparencies, the detectors efficiency and electronics deadtime are reviewed. Background rejection issues and the experiments consequent sensitivity to the measurement of cosmic x- ray source spectra are addressed ...
OSA | Optical Fibre Based Scintillation Probe for Radiotherapy DosimetryOSA | Optical Fibre Based Scintillation Probe for Radiotherapy Dosimetry
S. OKeeffe, D. McCarthy, P. Woulfe, J. Cronin, and E. Lewis, "Optical Fibre Based Scintillation Probe for Radiotherapy Dosimetry," in Imaging and Applied Optics Technical Papers, OSA Technical Digest (online) (Optical Society of America, 2012), paper AM3A.3 ...
MEDLINE - Resultado p gina 1MEDLINE - Resultado p gina 1
Guanazole and aphidicolin were chosen as candidates in the search for a selective, non-genotoxic inhibitor of DNA replication which could be used instead of hydroxyurea to measure DNA repair synthesis in rat hepatocyte primary cultures by liquid scintillation counting. The genotoxicity of these 3 chemicals was studied using the Salmonella/liver homogenate assay and the autoradiographic UDS test in hepatocytes. Hydroxyurea was positive in both of these assays. Guanazole and aphidicolin did not induce DNA repair in hepatocytes. Aphidicolin was not mutagenic for Salmonella typhimurium, whereas guanazole increased the revertant numbers of strain TA102 slightly. The incorporation of [3H]thymidine was measured by liquid scintillation to determine DNA repair induced by 2-acetylaminofluorene (2-AAF), aflatoxin B1, benzo[a]pyrene, cyclophosphamide, H2O2, 6-hydroxydopamine, N-methyl-N-nitro-N-nitrosoguanidine (MNNG), methylnitrosourea (MNU), 4-nitroquinoline-N-oxide and UV irradiation in the presence of ...
List | SBIR.govList | SBIR.gov
This proposal is to develop a novel slide based proximity assay platform to quantify protein phosphorylation on tissues. The novelty of this assay platform is derived from the use of the quantum dot with two emission peaks for fluorescence resonance energy transfer (FRET): one emission as internal standard and the other as FRET donor. Change of ratio of the two emission intensity during the FRET c .... ...
Consumables > Sample Handling > Scintillation Vials Laboratory Product Directory and Equipment Reviews on...Consumables > Sample Handling > Scintillation Vials Laboratory Product Directory and Equipment Reviews on...
Read reviews and compare manufacturers of Consumables > Sample Handling > Scintillation Vials products in the SelectScience products and suppliers directory
A Phase 3 Multi-center Study to Assess PET Imaging of Flurpiridaz F 18 Injection in Patients With CAD. - Full Text View -...A Phase 3 Multi-center Study to Assess PET Imaging of Flurpiridaz F 18 Injection in Patients With CAD. - Full Text View -...
The study will assess the diagnostic efficacy (sensitivity and specificity) of Flurpiridaz F18 Injection MPI against SPECT MPI in patients screened for CAD as determined by ICA. Six hundred and eighty evaluable patients will be enrolled and will undergo SPECT MPI and Flurpiridaz F18 PET MPI. Patients will be considered for enrollment if they are scheduled to undergo or have undergone prior ICA without intervention (being either positive or negative for CAD ...
In vivo dosimetry and acute toxicity in breast cancer patients undergoing intraoperative radiotherapy as boostIn vivo dosimetry and acute toxicity in breast cancer patients undergoing intraoperative radiotherapy as boost
From August 2014 until August 2015, IORT was considered in 124 patients; 82 patients actually underwent IORT and were enrolled in the phase 2 study. Among the 42 patients who did not undergo IORT, the reasons of IORT cancellation were either preoperative decisions in multidisciplinary conference, including presence of a huge primary mass or multicentric tumor nodules (n = 4); neoadjuvant chemotherapy (n = 3); definitive axillary, supraclavicular, or internal mammary lymph node metastasis (n = 3); and tumor close to the skin (n = 9); and intraoperative decisions including persistent positive resection margins (n = 9), conversion to total mastectomy (n = 8), and shape of tumor cavity unsuitable for IORT (n = 6). Among the 82 patients treated with IORT, 55 patients who underwent a minimum follow-up period of 1 month after WBI were included in the analysis. Follow-up after IORT ranged from 12.7 weeks to 50.3 weeks with a median follow-up of 25.9 weeks. The median patient age was 52 years (range, 32 ...
Research in Photomultiplier Tube Fatigue: Prediction, Acceleration and Correction of Fatigue Effects in Photomultipliers Tubes ...Research in Photomultiplier Tube Fatigue: Prediction, Acceleration and Correction of Fatigue Effects in Photomultipliers Tubes ...
This is a website created for the deposition of scientific-related administrative data of the Department of Environmental Science of the University of Puerto Rico, Río Piedras Campus.. Web Developement and database design by Eda C. Meléndez-Colom, Luquillo LTER Information Manager. Contact her for questions about this website. ...
NASA told what will be the nuclear probe New Frontiers | Earth Chronicles NewsNASA told what will be the "nuclear" probe New Frontiers | Earth Chronicles News
The next probe from NASA from the New Frontiers program can return the first samples of matter from the comet Churyumov-Gerasimenko or try to find traces of
Activation cross sections of deuteron induced reactions on silver in the 33-50 MeV energy range<...Activation cross sections of deuteron induced reactions on silver in the 33-50 MeV energy range<...
TY - JOUR. T1 - Activation cross sections of deuteron induced reactions on silver in the 33-50 MeV energy range. AU - Ditrói, F.. AU - Tárkányi, F.. AU - Takács, S.. AU - Hermanne, A.. AU - Ignatyuk, A. V.. PY - 2017/2/1. Y1 - 2017/2/1. N2 - Excitation functions were measured for the natAg(d,x)105,104Cd, 110 m,108m,106m,105g,104gAg and 101Pd, 105,101mRh reactions over the energy range 33-50 MeV by using the stacked foil activation technique and subsequent high-resolution gamma-spectrometry. We present the first experimental cross section data above 40 MeV for all of these reactions and the first experimental cross section data for natAg(d,x)108m,104gAg and 105,103Rh. The experimental data are compared with results of the model calculations performed with the ALICE-D, EMPIRE-D theoretical nuclear reaction model codes and with the TALYS code results as available in the TENDL-2014 and -2015 on-line libraries.. AB - Excitation functions were measured for the natAg(d,x)105,104Cd, 110 ...
Hawken Instruments - Centre for Microscopy and Microanalysis - University of QueenslandHawken Instruments - Centre for Microscopy and Microanalysis - University of Queensland
This is a high resolution, analytical Scanning Electron Microscope that can reach 2.5nm resolution at an accelerating voltage of 30kV. The electron source is a LaB6 gun. It has a brighter source than the tungsten hairpin gun. Bright, high quality images can be obtained at all kV ranges from 1-30kV. It has a wide magnification range to observe a variety of samples from 10cm in diameter to nano-structures at very high magnification. This instrument is an ideal analytical system as it has an Oxford 50mm2 X-Max SDD x-ray detector attached that enables simultaneous imaging and elemental analysis at high count rates with 125eV energy resolution. It has also has an integrated Oxford/HKL EBSD detector for crystallographic analysis with nanoscale resolution.. Book this instrument. Find training for this instrument. ...
A Phase 3 Multi-center Study to Assess PET Imaging of Flurpiridaz F 18 Injection in Patients With CAD. - Tabular View -...A Phase 3 Multi-center Study to Assess PET Imaging of Flurpiridaz F 18 Injection in Patients With CAD. - Tabular View -...
OUTCOME: The overall incidence of AEs (ie, AEs occurring from the time the informed consent is signed until the 2-week telephone follow-up [14-17 days post-flurpiridaz F 18 injection administration]) and treatment-emergent adverse events (TEAEs) (ie, AEs occurring at the time of flurpiridaz F 18 rest dose administration until the 14-17 day telephone follow-up) and the proportion of patients who discontinue because of an AE or TEAE are the primary safety outcome measures ...
POSITRON EMISSION COMPUTED TOMOGRAPHY APPARATUS - Patent applicationPOSITRON EMISSION COMPUTED TOMOGRAPHY APPARATUS - Patent application
0049] The ring buffer 15d receives an input of the reading signal 15r and outputs the event data 15k to a subsequent data processing stage 15i according to the reading signal 15r. The event data 15k in this situation is event data 15k of which the amount that is read is regulated according to the reading signal 15r. In other words, during the high count rate period, the ring buffer 15d outputs only the pieces of event data 15k stored in the buffer areas 1 to i, according to the reading signal 15r. On the contrary, during the normal period, the ring buffer 15d outputs the pieces of event data 15k stored in all of the buffer areas 1 to n, according to the reading signal 15r. As explained here, the event data 15k output from the ring buffer 15d is the event data 15k of which the amount that is read is regulated according to the reading signal 15r. The timing with which the ring buffer 15d outputs the event data 15k corresponds to, for example, the time at which the event data 15k has been stored ...
Improved scintillators for time-of-flight positron emission tomography - Stephen DerenzoImproved scintillators for time-of-flight positron emission tomography - Stephen Derenzo
Improved Scintillators for Time-of-Flight Positron Emission Tomography Project Summary/Abstract We propose to significantly improve the diagnostic imaging capab...
Chromosome analysis of lymphocytes from radiation workers in tritium-applying industryChromosome analysis of lymphocytes from radiation workers in tritium-applying industry
Objectives: The frequency of chromosomal aberrations (CA) and micronuclei (MN) in peripheral blood lymphocytes was compared in two groups of persons occupationally exposed to tritium either through the use of luminous paints or in the weapons industry, with the aim of finding a correlation between the CA and MN assays, the extent of radiation hazard, and the duration of occupational exposure to chemical forms of tritium and the ability of the latter to induce hazards in human lymphocytes. Methods: CA analysis and the cytochalasin B micronucleus test were performed. Urinary tritium in both groups was measured using a liquid scintillation method. For purposes of comparison, 2 control groups (40 persons) were examined; 24 exposed individuals were matched to their controls according to age, sex, and smoking habits. Results: Values recorded for the frequency of CA in the group of workers handling tritium in luminous dial painting were 0.015 +/- 0.014 dicentrics/cell, 0.023 +/- 0.017 total u...nstable ...
Chromosome analysis of lymphocytes from radiation workers in tritium-applying industryChromosome analysis of lymphocytes from radiation workers in tritium-applying industry
Objectives: The frequency of chromosomal aberrations (CA) and micronuclei (MN) in peripheral blood lymphocytes was compared in two groups of persons occupationally exposed to tritium either through the use of luminous paints or in the weapons industry, with the aim of finding a correlation between the CA and MN assays, the extent of radiation hazard, and the duration of occupational exposure to chemical forms of tritium and the ability of the latter to induce hazards in human lymphocytes. Methods: CA analysis and the cytochalasin B micronucleus test were performed. Urinary tritium in both groups was measured using a liquid scintillation method. For purposes of comparison, 2 control groups (40 persons) were examined; 24 exposed individuals were matched to their controls according to age, sex, and smoking habits. Results: Values recorded for the frequency of CA in the group of workers handling tritium in luminous dial painting were 0.015 +/- 0.014 dicentrics/cell, 0.023 +/- 0.017 total u...nstable ...
Therapy of malignant brain tumors: comparison of the in vitro activities of vidarabin-monophosphate, BCNU and 5-fluorouracil -...Therapy of malignant brain tumors: comparison of the in vitro activities of vidarabin-monophosphate, BCNU and 5-fluorouracil -...
BCNU (carmustine), 5-Fluorouracil (5-FU) and Vidarabin-monophosphate (ARA-A5P) were compared in their activities against 30 cell lines of primary (n = 21) and metastatic (n = 9) brain tumors, which were characterized in tissue culture by cytochemical, immunological and cytogenetic criteria. In vivo achievable concentration-time products were correlated with in vitro pharmacokinetic data. A micro assay was employed to screen for drug toxicity in individual tumor cell lines; cells were exposed to the drugs at exposure doses relevant to in vivo pharmacokinetics. After 5-8 population doubling times of untreated controls, RNA-synthesis, as a parameter of cell metabolism and proliferation, was determined by incorporation of (5, 6-3H)-uridine into cellular RNA (liquid scintillation counting protocol). A tumor stem cell assay was performed under similar conditions. The cytotoxic effect of each drug on individual cell lines was expressed in terms of a sensitivity index SI (SI = 1 indicating complete ...
Evaluation of potassium-43 scintillation images during early myocardial ischemia in an animal model. | CirculationEvaluation of potassium-43 scintillation images during early myocardial ischemia in an animal model. | Circulation
To assess the validity of myocardial imaging with potassium-43 (43K) early after the onset of ischemia, the left anterior descending artery was occluded with a baloon tip catheter in 32 intact anesthetized dogs. 99mTechnetium ventriculograms localized the left ventricle. 43K was administered intravenously and serial images were obtained in four views using an Anger camera with a pinhole collimator. The heart was arrested after 60 minutes and removed for imaging and tissue counts to ascertain extracardiac and geometric factors. In normals (group 1) left ventricular images were relatively homogeneous, except for the thin walled apex, both in vivo and in the isolated heart. Equilibration with 43K prior to ischemia (group 2) gave similar images to group 1, associated with a small reduction in tissue count after one hour of ischemia. Group 3 was infused with 43K after initiation of ischemia. Despite a reduction of 43K counts in the ischemic area to less than one-fourth of the nonischemic site (P less ...
Strehl ratio and scintillation theory for uplink Gaussian-beam waves: beam wander effectsStrehl ratio and scintillation theory for uplink Gaussian-beam waves: beam wander effects
The flagship monthly journal of SPIE, |i|Optical Engineering|/i| (OE) publishes peer-reviewed papers reporting on research and development in all areas of optics, photonics, and imaging science and engineering.
Dr. Nerine J. Cherepy ProfileDr. Nerine J. Cherepy Profile
Scintillator crystal detectors form the basis for many radiation detection devices. Therefore, a search for high light yield single crystal scintillators with improved energy resolution, large volume, and the potential for low cost, is an ongoing process that has increased in recent years due to a large demand in the area of nuclear isotope identification. Alkaline earth halides, elpasolites and rare earth halides are very interesting because many compositions from these crystal families provide efficient Ce3+/ Eu2+ luminescence, good proportionality and good energy resolution. They also have small band-gap leading to higher light yields. Ce3+and Eu2+ are efficient, and the emission wavelengths in the 350-500 nm region matches well with PMTs and a new generation of Siphotodiodes. In this presentation, we will the present progress made in the crystal growth of these compositions, and scintillator properties of large diameter SrI2:Eu2+ single transparent crystals. The crystals were grown ...
RadioembolizationRadioembolization
QuiremSpheres® microspheres, which are based on holmium-166, provide unique imaging capabilities that allow for optimum in vivo dosimetry on a voxel level. This makes it possible to perform post-treatment quantitative verification of the achieved dose distribution, i.e. determining dose-to-tumor and dose-to-tissue. With QuiremSpheres® you treat what you see and see what you treat. Read more ...
RadioembolizationRadioembolization
QuiremSpheres® microspheres, which are based on holmium-166, provide unique imaging capabilities that allow for optimum in vivo dosimetry on a voxel level. This makes it possible to perform post-treatment quantitative verification of the achieved dose distribution, i.e. determining dose-to-tumor and dose-to-tissue. With QuiremSpheres® you treat what you see and see what you treat. Read more ...
China Security Dome CCTV CCD Camera / Explosion-Proof PTZ CCD Camera (SHJ-525CZ-36B) - China Cctv Camera, Ccd CameraChina Security Dome CCTV CCD Camera / Explosion-Proof PTZ CCD Camera (SHJ-525CZ-36B) - China Cctv Camera, Ccd Camera
China Security Dome CCTV CCD Camera / Explosion-Proof PTZ CCD Camera (SHJ-525CZ-36B), Find details about China Cctv Camera, Ccd Camera from Security Dome CCTV CCD Camera / Explosion-Proof PTZ CCD Camera (SHJ-525CZ-36B) - Changzhou Shengshijia Electronic Co., Ltd.
Browse by Person - White Rose Research OnlineBrowse by Person - White Rose Research Online
Marti, L, Ikeda, M, Kato, Y et al. (65 more authors) (2020) Evaluation of gadoliniums action on water Cherenkov detector systems with EGADS. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 959. 163549. ISSN 0168-9002 ...
Capillary guiding [IAP/TU Wien]Capillary guiding [IAP/TU Wien]
First investigations in our laboratory were carried out using etched nano capillaries in a PET foil. These nano-capillaries had diameters of the order of 100nm at a length of several microns. A beam of highly-charged-ions was used to irradiate the foil, which could be tilted against the beam axis. The transmitted ions were recorded with a position sensitive detector system, allowing a time resolved determination of the deflection. Latest experiments were using a single, macroscopic glass tube, with a diameter of about 170 microns and a total length of more than 10 mm, showing also guiding up to several degrees, as illustrated in the figure. One can see the 2D image of the direct beam collimated by a 500 micron aperture at the capillary position (red) in comparison to the ions transmitted through the capillary (blue) at 4 different tilt angles. The experiments have been carried out with our ECR ion source, using 4.5keV Ar9+ projectiles. ...
Formaldehyde - solutionFormaldehyde - solution
The MultiRAE Pro wireless portable monitor can be used for radiation and advanced chemical detection. IScientific Pte Ltd has offers MultiRAE Pro gas detector system to detect Oxygen, LEL, CO, NO2, SO2, PH3, NH3, ClO2, Chlorine, CO2, EtO2, HCN, NO, Formaldehyde, H2S, VOCs etc.. ...
Si photodiode S12497 | Hamamatsu PhotonicsSi photodiode S12497 | Hamamatsu Photonics
The S12497 is a Si photodiode suitable for non-destructive inspection of baggage and the like and general industrial measurement. As it is a back-illuminated photodiode, photosensitive area does not have wires, and therefore a scintillator can be mounted directly on the photodiode.Features- Spectral response range : 400 to 1100 nm- Photosensitive area: 9.5 × 9.5 mm- Easy scintillator mounting
Search Articles | University of Toronto LibrariesSearch Articles | University of Toronto Libraries
The goal of this study was to evaluate the nature of the stem effect light produced within an optical fiber, to quantify its composition, and to evaluate the ...
Used Wheaton 868806 (300-3991) | Tube Rack | Miscellaneous | BioSurplusUsed Wheaton 868806 (300-3991) | Tube Rack | Miscellaneous | BioSurplus
Price: $45.00; Manufacturer: Wheaton; Item ID: 3003991; Warranty: 30-Day Money-Back Guarantee; Description: This 50-position polypropylene rack accommodates 20mL scintillation vials up to 28mm
System for quantitative radiographic imaging - University of Massachusetts Medical CenterSystem for quantitative radiographic imaging - University of Massachusetts Medical Center
A system for spectroscopic imaging of bodily tissue in which a scintillation screen and a charged coupled device (CCD) are used to accurately image selected tissue. Applications include the imaging of
Dr. Tomas R. Chevalier ProfileDr. Tomas R. Chevalier Profile
This paper presents our ongoing research activities on target recognition from data generated by 3-D imaging laser radar. In particular, we focus on future full flash imaging 3-D sensors. Several techniques for laser range imaging are applied for modelling and simulation of data from this kind of 3-D sensor systems. Firstly, data from an experimental gated viewing system is used. Processed data from this system is useful in assisting an operator in the target recognition task. Our recent work on target identification at long ranges, using range data from the gated viewing system, provides techniques to handle turbulence, platform motion and illumination variances from scintillation and speckle noise. Moreover, the range data is expanded into 3-D by using a gating technique that provides reconstruction of the target surface structure. This is shown at distances out to 7 km. Secondly, 3-D target data is achieved at short ranges by using different scanning laser radar systems. This provides ...
Near rhymes with fibrillationB-Rhymes | B-RhymesNear rhymes with fibrillationB-Rhymes | B-Rhymes
Near rhymes (words that almost rhyme) with fibrillation: assimilation, vacillation, scintillation, ventilation... Find more near rhymes/false rhymes at B-Rhymes.com
Help ME! Brown Water from IRON~ - Page 6 - Swimming Pool HelpHelp ME! Brown Water from IRON~ - Page 6 - Swimming Pool Help
I have well water that is very high in iron. To give you an idea of how bad it is when I filled my pool it was at 3.6%. Those of you with high counts know how difficult my job was and I can proudly say I am at 0% today. I wanted to share what I have learned along the way and what end the end worked for me. My pool is 15x 30, 15,000 gallons. I have had both a sand filter and a cartridge filter, sand does a better job at removing metals. Most metal removing products will only lower you by .5-1% per jug so if your count is over .5% might as well toss in 2 jugs and let filter run non stop. If you have a sand filter do not backwash, I know you will read over and over to backwash often but the sand filter does work more effectively if you dont until the pressure is built up because the stuff it is collecting is helping filter the smaller partials out. A cartridge filter clogs so yes it will need to be rinsed daily, me I did 2x a day and what a pain that was, still say the sand filter was my best ...
Intestinal microbiota and immunoglobulin E responses in 5-year-old Estonian childrenIntestinal microbiota and immunoglobulin E responses in 5-year-old Estonian children
The development of allergic diseases seems to be associated with the composition of the gut microbial ecosystem. High counts of potential pathogens, such as clostridia, are associated with clinical manifestations of allergy and IgE antibody formation.
Head-on PMT assemblies | Hamamatsu PhotonicsHead-on PMT assemblies | Hamamatsu Photonics
These PMT assemblies incorporate a head-on photomultiplier tube with photosensitive areas ranging from 10 mm to 127 mm in diameter. Options include HA treatment (conductive layer connected to the cathode) and a magnetic shield case.
Polyvinyl toluenePolyvinyl toluene
Birks lawBirks' law
Carbon-14Carbon-14
Lucas cellLucas cell
POPOPPOPOP
David L. FriedDavid L. Fried
ExopolyphosphataseExopolyphosphatase
Radioactive contaminationRadioactive contamination
Beryllium-10Beryllium-10
Nuclear chemistryNuclear chemistry
Erich RegenerErich Regener
Alpha-particle spectroscopyAlpha-particle spectroscopy
Radioactive tracerRadioactive tracer
Ernest RutherfordErnest Rutherford
Cesio, a enciclopedia libreCesio, a enciclopedia libre
Well counterWell counter
George A. BrayGeorge A. Bray
Relative densityRelative density
Total absorption spectroscopyTotal absorption spectroscopy
Chester L. SutulaChester L. Sutula
TritiumTritium
Survey meterSurvey meter
Nuclear forensicsNuclear forensics
Gamma spectroscopyGamma spectroscopy
Myocardial perfusion imagingMyocardial perfusion imaging
Wireline (cabling)Wireline (cabling)
Methods of detecting exoplanetsMethods of detecting exoplanets
Gamma cameraGamma camera
Small article monitorSmall article monitor
پرتو کیهانی - ویکی‌پدیا، دانشنامهٔ آزادپرتو کیهانی - ویکی‌پدیا، دانشنامهٔ آزاد
Flow measurementFlow measurement
User:Plbrown123/Books/Atoms, Ions, Bonds, Molecules, Electronic, and Chemical Analysis; You Dont See that in Dasher! -...User:Plbrown123/Books/Atoms, Ions, Bonds, Molecules, Electronic, and Chemical Analysis; You Don't See that in Dasher! -...
Radiation protectionRadiation protection
Radiocarbon datingRadiocarbon dating
Carbon-14Carbon-14
Optical fiberOptical fiber
Visible-light photon counterVisible-light photon counter
Light-emitting diodeLight-emitting diode
TritiumTritium
CaesiumCaesium
SN 1987ASN 1987A
Medical imagingMedical imaging
GemstoneGemstone
Diamond (gemstone)Diamond (gemstone)
Dark matterDark matter
Radiation Portal MonitorRadiation Portal Monitor
Gaseous detection deviceGaseous detection device
Photon countingPhoton counting
Kim Sun-keeKim Sun-kee
Reverse transcription polymerase chain reactionReverse transcription polymerase chain reaction
Neutron fluxNeutron flux
Chemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesDisciplines and OccupationsTechnology, Industry, AgricultureInformation ScienceHealth Care
Scintillation CountingRadionuclide ImagingPlasticsTechnetiumGermaniumRadioactive WasteRadiometryElementary ParticlesGamma CamerasTechnology, RadiologicRadioisotopesOptical FibersCarbon RadioisotopesXenon RadioisotopesThalliumTritiumPhotonsMercury RadioisotopesNuclear PhysicsWhole-Body CountingAutoradiographyIodine RadioisotopesSpectrometry, GammaPentetic AcidTantalumComputersRadiation MonitoringMethodsRadioisotope Dilution TechniqueCobalt RadioisotopesIridium RadioisotopesRadiation DosageParticle AcceleratorsPhantoms, ImagingMonte Carlo MethodIodohippuric AcidRadioisotope RenographyLutetiumSerum Albumin, Radio-IodinatedTechnetium Tc 99m PentetateTissue DistributionRadiotherapy, High-EnergyIsotope LabelingElectronicsEquipment DesignTomographyIron IsotopesBenzene DerivativesEvaluation Studies as TopicIndiumRadonIonic LiquidsAir Pollutants, RadioactiveAir Pollution, Radioactive
Liquid scintillation counting - WikipediaLiquid scintillation counting - Wikipedia
Fast determination of indoor radon (222Rn) concentration using liquid scintillation counting | SpringerLinkFast determination of indoor radon (222Rn) concentration using liquid scintillation counting | SpringerLink
Cerenkov Counting Performance on the TopCountTM Microplate Scintillation and Luminescence Counter ( Abstract ...Cerenkov Counting Performance on the TopCountTM Microplate Scintillation and Luminescence Counter ( Abstract ...
Applications of Liquid Scintillation Counting | National DiagnosticsApplications of Liquid Scintillation Counting | National Diagnostics
AID 464313 - Inhibition of GRK7-mediated bovine tubulin phosphorylation by scintillation counting - PubChemAID 464313 - Inhibition of GRK7-mediated bovine tubulin phosphorylation by scintillation counting - PubChem
AID 387203 - Displacement of [3H]NECA from Sprague-Dawley rat adenosine A2A receptor by scintillation counting - PubChemAID 387203 - Displacement of [3H]NECA from Sprague-Dawley rat adenosine A2A receptor by scintillation counting - PubChem
US3560744A - Method and apparatus for compensating of quenching in liquid scintillation counting - Google PatentsUS3560744A - Method and apparatus for compensating of quenching in liquid scintillation counting - Google Patents
Four Decades of Progress in 14C Dating by Liquid Scintillation Counting and Spectrometry | Springer for Research & DevelopmentFour Decades of Progress in 14C Dating by Liquid Scintillation Counting and Spectrometry | Springer for Research & Development
Method validation and verification in liquid scintillation counting using the long-term uncertainty method (LTUM) on two...Method validation and verification in liquid scintillation counting using the long-term uncertainty method (LTUM) on two...
Integrated approach to surfactant environmental safety assessment: fast atom bombardment mass spectrometry and liquid...Integrated approach to surfactant environmental safety assessment: fast atom bombardment mass spectrometry and liquid...
Experimental Evolution of Escherichia coli Harboring an Ancient Translation Protein | SpringerLinkExperimental Evolution of Escherichia coli Harboring an Ancient Translation Protein | SpringerLink
In vivo detection and imaging of phosphatidylserine expression during programmed cell death | PNASIn vivo detection and imaging of phosphatidylserine expression during programmed cell death | PNAS
Projects/Programs | NISTProjects/Programs | NIST
Projects/Programs | Page 9 | NISTProjects/Programs | Page 9 | NIST
March 08, 1913 - Scientific AmericanMarch 08, 1913 - Scientific American
Targeted In Vivo Labeling of Receptors for Vascular Endothelial Growth Factor | CirculationTargeted In Vivo Labeling of Receptors for Vascular Endothelial Growth Factor | Circulation
All researchers Using Scintillation Counting Fluid | Environmental Health and SafetyAll researchers Using Scintillation Counting Fluid | Environmental Health and Safety
Responses to hypoxia and recovery: repayment of oxygen debt is not associated with compensatory protein synthesis in the...Responses to hypoxia and recovery: repayment of oxygen debt is not associated with compensatory protein synthesis in the...
Radiochemistry (RSC Publishing)Radiochemistry (RSC Publishing)
Plus itPlus it
A scintillation proximity assay for the Raf/MEK/ERK kinase cascade: high-throughput screening and identification of selective...A scintillation proximity assay for the Raf/MEK/ERK kinase cascade: high-throughput screening and identification of selective...
S | Hamamatsu PhotonicsS | Hamamatsu Photonics
Kimble Glass Products | Fisher ScientificKimble Glass Products | Fisher Scientific
Patent US5824491 - Dry reagent test strip comprising benzidine dye precursor and antipyrine ... - Google PatentsPatent US5824491 - Dry reagent test strip comprising benzidine dye precursor and antipyrine ... - Google Patents
Patent US20110008897 - Paint for Detection Of Corrosion and Warning of Chemical and Radiological Attack - Google PatentsPatent US20110008897 - Paint for Detection Of Corrosion and Warning of Chemical and Radiological Attack - Google Patents
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Patente US6909097 - Scintillation detector, system and method providing energy and position ... - Google PatentesPatente US6909097 - Scintillation detector, system and method providing energy and position ... - Google Patentes
Radiation Safety Calibration, UVA-EHSRadiation Safety Calibration, UVA-EHS
Publications Advanced Search | IAEAPublications Advanced Search | IAEA
The autophagy initiator ULK1 sensitizes AMPK to allosteric drugs | Nature CommunicationsThe autophagy initiator ULK1 sensitizes AMPK to allosteric drugs | Nature Communications
Chemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesDisciplines and OccupationsTechnology, Industry, AgricultureInformation ScienceHealth Care
Scintillation CountingRadionuclide ImagingPlasticsTechnetiumGermaniumRadioactive WasteRadiometryElementary ParticlesGamma CamerasTechnology, RadiologicRadioisotopesOptical FibersCarbon RadioisotopesXenon RadioisotopesThalliumTritiumPhotonsMercury RadioisotopesNuclear PhysicsWhole-Body CountingAutoradiographyIodine RadioisotopesSpectrometry, GammaPentetic AcidTantalumComputersRadiation MonitoringMethodsRadioisotope Dilution TechniqueCobalt RadioisotopesIridium RadioisotopesRadiation DosageParticle AcceleratorsPhantoms, ImagingMonte Carlo MethodIodohippuric AcidRadioisotope RenographyLutetiumSerum Albumin, Radio-IodinatedTechnetium Tc 99m PentetateTissue DistributionRadiotherapy, High-EnergyIsotope LabelingElectronicsEquipment DesignTomographyIron IsotopesBenzene DerivativesEvaluation Studies as TopicIndiumRadonIonic LiquidsAir Pollutants, RadioactiveAir Pollution, Radioactive
VialsScintillatorFast scintillation materialDetectorDetectorsCounterAqueousHighAssayFlashes of lightMeasurementsResearchers2910TR liquid scintillation counterCarbon-14Biodegradable scintillationRadioactivityProportionalMeasurementPhotomultiplierFluidsAbstractConcentrationsMethodsOrganicNuclearProbes1964SurfactantCompoundsContaining varyingPreparationActivitySampleOpticalAnalysis
Vials1
Scintillator1
Fast scintillation material1
Detector5
Detectors1
Counter3
Aqueous1
High1
  • High ionic concentrations will be most efficiently counted in this region. (mpbio.com)
Assay1
Flashes of light2
Measurements1
Researchers1
  • This equipment enabled a record to be obtained on which an image of the gland was visible and which the researchers concluded was better than a total activity count for clinical studies of thyroid disease. (enviroreporter.com)
2910TR liquid scintillation counter1
Carbon-141
Biodegradable scintillation5
Radioactivity3
Proportional2
Measurement3
Photomultiplier3
Fluids1
  • 1. Regulated organic based waste scintillation fluids will be handled and disposed of as "mixed waste" (waste that is considered both hazardous and radioactive). (clemson.edu)
Abstract1
Concentrations1
Methods3
Organic2
Nuclear2
Probes1
  • Various types of probes utilize at least one scintillation crystal in lightcommunication with a photo-multiplier tube so as to quantify in some way, the flashes of light which result from fluorescent radiation emitted by atoms of the crystal as they return to their normal energy state after having been ionized or excited by a charged particle which enters the crystal lattice. (google.com)
19641
  • An account of the present state of the art in scintillation counting may be found in several publications, for instance in Liquid scintillation counting (l957l963) by E. Rapkin, in pages 6987 of the International Journal of Applied Radiation and Isotopes' 1964). (google.com)
Surfactant2
Compounds1
Containing varying1
Preparation2
Activity1
Sample1
  • If sample does not require enrichment, the counting will continue until the criterion under A1 is met and the total cost is the same as above in A.1, i.e. $175.00. (miami.edu)
Optical1
  • Larry C. Andrews , Ronald L. Phillips , Richard J. Sasiela, Ronald R. Parenti , "Strehl ratio and scintillation theory for uplink Gaussian-beam waves: beam wander effects," Optical Engineering 45(7), 076001 (1 July 2006). (spiedigitallibrary.org)
Analysis2
March 08, 1913 - Scientific American
March 08, 1913 - Scientific American (scientificamerican.com)
Responses to hypoxia and recovery: repayment of oxygen debt is not associated with compensatory protein synthesis in the...
Responses to hypoxia and recovery: repayment of oxygen debt is not associated with compensatory protein synthesis in the... (jeb.biologists.org)
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S | Hamamatsu Photonics
S | Hamamatsu Photonics (hamamatsu.com)
Fast determination of indoor radon (222Rn) concentration using liquid scintillation counting | SpringerLink
Fast determination of indoor radon (222Rn) concentration using liquid scintillation counting | SpringerLink (link.springer.com)
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Publications Advanced Search | IAEA
Publications Advanced Search | IAEA (iaea.org)
The autophagy initiator ULK1 sensitizes AMPK to allosteric drugs | Nature Communications
The autophagy initiator ULK1 sensitizes AMPK to allosteric drugs | Nature Communications (nature.com)
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Plus it (dmd.aspetjournals.org)
Two-Dimensional X-Ray Diffraction | Analytical Chemistry | Chemistry | Subjects | Wiley
Two-Dimensional X-Ray Diffraction | Analytical Chemistry | Chemistry | Subjects | Wiley (wiley.com)
CORDIS | European Commission
CORDIS | European Commission (cordis.europa.eu)
Kimble Glass Products | Fisher Scientific
Kimble Glass Products | Fisher Scientific (fishersci.com)
RACK1/Asc1p, a Ribosomal Node in Cellular Signaling | Molecular & Cellular Proteomics
RACK1/Asc1p, a Ribosomal Node in Cellular Signaling | Molecular & Cellular Proteomics (mcponline.org)
Absorption: In Vivo Tests (Radiolabeled) | SpringerLink
Absorption: In Vivo Tests (Radiolabeled) | SpringerLink (link.springer.com)
Identification of a urate transporter, ABCG2, with a common functional polymorphism causing gout | PNAS
Identification of a urate transporter, ABCG2, with a common functional polymorphism causing gout | PNAS (pnas.org)
Identification of the gene that codes for the σ2 receptor | PNAS
Identification of the gene that codes for the σ2 receptor | PNAS (pnas.org)
Complement component 3 deficiency prolongs MHC-II disparate skin allograft survival by increasing the CD4 + CD25 + regulatory T...
Complement component 3 deficiency prolongs MHC-II disparate skin allograft survival by increasing the CD4 + CD25 + regulatory T... (nature.com)
Stimulation of soluble guanylyl cyclase protects against obesity by recruiting brown adipose tissue | Nature Communications
Stimulation of soluble guanylyl cyclase protects against obesity by recruiting brown adipose tissue | Nature Communications (nature.com)
Microplastic-toxic chemical interaction: a review study on quantified levels, mechanism and implication | SpringerLink
Microplastic-toxic chemical interaction: a review study on quantified levels, mechanism and implication | SpringerLink (link.springer.com)
GE Healthcare Whatman Binder-Free Glass Microfiber Filters, Grade GF/C
GE Healthcare Whatman Binder-Free Glass Microfiber Filters, Grade GF/C (fishersci.com)
Search Results - - 66 Results - Digital Library
Search Results - - 66 Results - Digital Library (digital.library.unt.edu)
Transformation/Transcription Domain-Associated Protein (TRRAP)-Mediated Regulation of Wee1 | Genetics
Transformation/Transcription Domain-Associated Protein (TRRAP)-Mediated Regulation of Wee1 | Genetics (genetics.org)
Nuclear Chemistry: Detection and Analysis of Radiation - 1st Edition
Nuclear Chemistry: Detection and Analysis of Radiation - 1st Edition (routledge.com)
Unrestrained AMPylation targets cytosolic chaperones and activates the heat shock response | PNAS
Unrestrained AMPylation targets cytosolic chaperones and activates the heat shock response | PNAS (pnas.org)
Thioridazine induces apoptosis by targeting the PI3K/Akt/mTOR pathway in cervical and endometrial cancer cells | SpringerLink
Thioridazine induces apoptosis by targeting the PI3K/Akt/mTOR pathway in cervical and endometrial cancer cells | SpringerLink (link.springer.com)
Excess Phosphoinositide 3-Kinase Subunit Synthesis and Activity as a Novel Therapeutic Target in Fragile X Syndrome | Journal...
Excess Phosphoinositide 3-Kinase Subunit Synthesis and Activity as a Novel Therapeutic Target in Fragile X Syndrome | Journal... (jneurosci.org)
Effects of Long Distance Transportation on Honey Bee Physiology
Effects of Long Distance Transportation on Honey Bee Physiology (hindawi.com)
Four Decades of Progress in 14C Dating by Liquid Scintillation Counting and Spectrometry | Springer for Research & Development
Four Decades of Progress in 14C Dating by Liquid Scintillation Counting and Spectrometry | Springer for Research & Development (rd.springer.com)
Potent Anti-Inflammatory and Neuroprotective Effects of TGF-β1 Are Mediated through the Inhibition of ERK and p47phox-Ser345...
Potent Anti-Inflammatory and Neuroprotective Effects of TGF-β1 Are Mediated through the Inhibition of ERK and p47phox-Ser345... (jimmunol.org)
A SemiEmpirical Equation for the Vapor Pressure of Liquids as a Function of Temperature-1953 | Diffusion | Temperature
A SemiEmpirical Equation for the Vapor Pressure of Liquids as a Function of Temperature-1953 | Diffusion | Temperature (scribd.com)
Activity-Based Profiling of a Physiologic Aglycone Library Reveals Sugar Acceptor Promiscuity of Family 1 UDP...
Activity-Based Profiling of a Physiologic Aglycone Library Reveals Sugar Acceptor Promiscuity of Family 1 UDP... (plantphysiol.org)
Iron uptake by ZIP8 and ZIP14 in human proximal tubular epithelial cells | SpringerLink
Iron uptake by ZIP8 and ZIP14 in human proximal tubular epithelial cells | SpringerLink (link.springer.com)
Significance of N-Terminal Proteolysis of CCL14a to Activity on the Chemokine Receptors CCR1 and CCR5 and the Human...
Significance of N-Terminal Proteolysis of CCL14a to Activity on the Chemokine Receptors CCR1 and CCR5 and the Human... (jimmunol.org)