Neutron Activation Analysis: Activation analysis in which the specimen is bombarded with neutrons. Identification is made by measuring the resulting radioisotopes. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Activation Analysis: A method of chemical analysis based on the detection of characteristic radionuclides following a nuclear bombardment. It is also known as radioactivity analysis. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Spectrometry, Gamma: Determination of the energy distribution of gamma rays emitted by nuclei. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Nails: The thin, horny plates that cover the dorsal surfaces of the distal phalanges of the fingers and toes of primates.Trace Elements: A group of chemical elements that are needed in minute quantities for the proper growth, development, and physiology of an organism. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Zinc Isotopes: Stable zinc atoms that have the same atomic number as the element zinc, but differ in atomic weight. Zn-66-68, and 70 are stable zinc isotopes.Chromium: A trace element that plays a role in glucose metabolism. It has the atomic symbol Cr, atomic number 24, and atomic weight 52. According to the Fourth Annual Report on Carcinogens (NTP85-002,1985), chromium and some of its compounds have been listed as known carcinogens.Selenium: An element with the atomic symbol Se, atomic number 34, and atomic weight 78.96. It is an essential micronutrient for mammals and other animals but is toxic in large amounts. Selenium protects intracellular structures against oxidative damage. It is an essential component of GLUTATHIONE PEROXIDASE.Hair: A filament-like structure consisting of a shaft which projects to the surface of the SKIN from a root which is softer than the shaft and lodges in the cavity of a HAIR FOLLICLE. It is found on most surfaces of the body.Body Composition: The relative amounts of various components in the body, such as percentage of body fat.Zinc: A metallic element of atomic number 30 and atomic weight 65.38. It is a necessary trace element in the diet, forming an essential part of many enzymes, and playing an important role in protein synthesis and in cell division. Zinc deficiency is associated with ANEMIA, short stature, HYPOGONADISM, impaired WOUND HEALING, and geophagia. It is known by the symbol Zn.Copper: A heavy metal trace element with the atomic symbol Cu, atomic number 29, and atomic weight 63.55.

A bone calcium index based on partial-body calcium measurements by in vivo activation analysis. (1/35)

Measurements of partial-body calcium by in vivo neutron activation analysis have been carried out on normal and osteoporotic subjects. Based on measurements on 16 normal subjects (volunteers less than 55 years of age), a calcium index has been established that takes into account variation in skeletal frame size. On the basis of this index, all osteoporotic patients have bone mineral content less than any of the normal subjects. The normal calcium indices range from 0.9 to 1.2, and the osteoporotic indices ranged from 0.41 to 0.83. Thirteen of 22 volunteers over 55 years of age had calcium indices less than 0.9 in agreement with the expected loss of calcium with age. Measurements of total-body potassium were also made on these same subjects and the calcium/potassium ratios calculated. Although as groups the older volunteers and older osteoporotic subjects had mean calcium/potassium ratios similar to the mean for the normal subjects, the osteoporotic subjects under 55 years of age had a mean calcium/potassium ratio significantly lower, indicationg that for this latter group the loss in bone mineral was not associated with a corresponding loss in muscle mass.  (+info)

Phonton absorptiometry and skeletal mass in the treatment of osteoporosis. (2/35)

Thirty-six osteoporotic patients who underwent several therapeutic regimes were studied on two occasions by photon absorptiometry and total-body neutron activation analysis (TBNAA). These determinations were made at a mean interval of 8.9 plus or minus 0.8 months. The 8-cm radial site was chosen for the photon absorptiometry which was performed with the Norland-Instruments Densitometer. Mean initial bone mineral content (BMC) was 0.724 plus or minus 0.069 gm/cm and mean bone width was 1.235 plus or minus 0.072 cm. The mean percent change in BMC (%deltaBMC) was 1.02 plus or minus 4.2. The initial total-body calcium (TBCa) as determined by TBNAA was reduced when compared with values that would be expected from empirically derived formulas. The mean percent change in TB-Ca (%deltaTB-Ca) was -3.2 plus or minus 4.7. Most patients displayed a change in BMC and TB-Ca that was at least 2 s.d. greater than the precision of the methods used (%deltaTB-Ca greater than 2). No relationship was found between the deltaBMC and the deltaTB-Ca (r = 0.17). These findings suggest that changes in the radical BMC at the 8-cm site cannot be extrapolated to indicate changes in skeletal mass in response to treatment of osteoporosis. Whether photon absorptiometry at other sites or at multiple sites provides a closer relationship to changes in skeletal mass (TB-Ba) remains to be determined.  (+info)

Preliminary observations on excretion of 37Ar from man following whole-body neutron activation--an indicator of total-body calcium. (3/35)

Measurements of exhaled 37-Ar produced by total-body neutron irradiation of 40-Ca were used to determine total-body calcium in 16 human subjects. There was a good correlation between body calcium using the 30-min postirradiation breath sample of 37-Ar and body calcium determined by measurement of 49-Ca.  (+info)

Effects of activation sequence on the local recovery of ventricular excitability in the dog. (4/35)

We measured refractory periods at ventricular sites in the dog heart during drive from ventricular test sites and during combined drive from the test sites and other ventricular sites or the atrium. We found that ventricular activation sequence caused significant alterations on refractory period. Combined drive from two sites which resulted in fusion complexes was associated with shorter refractory periods at the test sites than those observed during drive at the test sites only. Our findings are explicable because earlier excitation and consequent earlier recovery of surrounding areas during fusion beats exerts an electrotonic influence on test sites.  (+info)

Length-induced changes in activation during contraction. A study of mechanical oscillations in strontium-mediated contractions of cat and frog heart muscle. (5/35)

The plateau phase of prolonged Sr-mediated contractions of preparations of cat and frog heart muscle was used to study the transient response to abrupt changes in load or length. An oscillatory response (total amplitude equal to or less than 5% Lmax) was obtained. Isotonic oscillations were less damped than their isometric counterparts, implying positive feedback and thus a causal role of the perturbation in length. Oscillation frequency was 2-3 HZ at 29 degrees C (Q 10, 2-3); it could be increased by epinephrine or caffeine, independently of their effects on extent of shortening; it otherwise changed as a generally constant function of the length at which the oscillation occurred, whether this was altered by changes in extracellular [Sr], frequency of contraction, or load (independent of the direction and magnitude of the preceding load step). Similar oscillatory responses were induced during Sr- or Ca-mediated contractures. Cat muscles showed an additional slower component to the oscillatory response. Transient augmentation of the velocity-length relationship after abrupt reduction in load, previously described for twitch contractions under certain conditions, appears to be analogous to the first phase of the oscillatory response studied here. Our findings indicate that the oscillation is not attributable to any mechanism intrinsic to myofilament interaction, but rather that it involves length-induced changes in the level of activation, probably mediated by Ca2+ or Sr2+. We conclude that length influences the level of activation during contraction of heart muscle.  (+info)

MICROSCOPIC DETERMINATION OF BONE PHOSPHORUS BY QUANTITATIVE AUTORADIOGRAPHY OF NEUTRON-ACTIVATED SECTIONS. (6/35)

Longitudinal sections of human cortical bone were submitted to thermal neutrons. gamma-ray spectra were recorded repeatedly during 15 days following irradiation. They showed that Na(24) is predominant as early as 3 hours after activation and that all the gamma-emitters have decayed on the 15th day. When the gamma-rays have disappeared, beta-rays are still produced by the sections. It was proved by the absorption curve in aluminium that all these beta-rays are issued from the P(32) induced in the sections by activation of P(31). Therefore autoradiograms registered 15 days after activation reveal the distribution of P(32) in the sections. gamma-ray spectra and beta-ray absorption curves of neutron activated sections of ivory demonstrated a mineral composition similar to that of bone. Autoradiograms of ivory sections activated for various times were used to establish the relation between the optical density of the autoradiograms and the radioactivity in P(32). When the bone autoradiograms are compared with the ivory standards of known radioactivity, the optical densities of single osteons (Haversian systems), can be related to their phosphorus contents. Autoradiograms and microradiograms of the same sections were examined side by side. The least calcified osteons, that contain 80 per cent of the calcium of the fully calcified osteons, also contain about 80 per cent of the phosphorus of the fully mineralized osteons. It is concluded that the Ca:P ratio remains constant while mineralization of bone tissue is being completed.  (+info)

Heparin-stimulated inhibition of factor IXa generation and factor IXa neutralization in plasma. (7/35)

Generation and inhibition of activated factor IXa was studied in factor XIa-activated plasma containing 4 mmol/L free calcium ions and 20 mumol/L phospholipid (25 mol% phosphatidylserine/75 mol% phosphatidylcholine). Interference of other (activated) clotting factors with the factor IXa activity measurements could be avoided by using a highly specific and sensitive bioassay. Factor IXa generation curves were analyzed according to a model that assumed Michaelis-Menten kinetics of factor XIa-catalyzed factor IXa formation and pseudo first order kinetics of inhibition of factor XIa and factor IXa. In the absence of heparin, factor IXa activity in plasma reached final levels that were found to increase with increasing amounts of factor XIa used to activate the plasma. When the model was fitted to this set of factor IXa generation curves, the analysis yielded a rate constant of inhibition of factor XIa of 0.7 +/- 0.1 min-1 and a kcat/Km ratio of 0.29 +/- 0.01 (nmol/L)-1 min-1. No neutralization of factor IXa activity was observed (the estimated rate constant of inhibition of factor IXa was 0). Thus, in the absence of heparin, the final level of factor IXa in plasma is only dependent on the initial factor XIa concentration. While neutralization of in situ generated factor IXa in normal plasma was negligible, unfractionated heparin dramatically enhanced the rate of inactivation of factor IXa (apparent second order rate constant of inhibition of 5.2 min-1/per microgram heparin/mL). The synthetic pentasaccharide heparin, the smallest heparin chain capable of binding antithrombin III, stimulated the inhibition of in situ generated factor IXa, but sevenfold less than unfractionated heparin (k = 0.76 min-1 per microgram pentasaccharide/mL). We found that free calcium ions were absolutely required to observe an unfractionated heparin and pentasaccharide-stimulated neutralization of factor IXa activity. Factor XIa inhibition (psuedo first order rate constant of 0.7 min-1) was not affected by unfractionated heparin or pentasaccharide in the range of heparin concentrations studied.  (+info)

Post-separation detection of nucleic acids and proteins by neutron activation. (8/35)

We describe approaches to neutron activation analysis and their application to post-separation autoradiographic detection of biological compounds. Specifically, we have extended the use of a "direct-labeling" method to the post-separation detection of DNA after gel electrophoresis and to the detection of nucleotides separated by TLC. In addition, we describe a more generally applicable "indirect-labeling" method in which separated compounds of interest are selectively bound to ligands containing highly neutron-activatable elements, such as manganese (55Mn), europium (151Eu), or dysprosium (164Dy), and then irradiated with thermal neutrons. This method is illustrated with nucleotides separated by TLC and with proteins separated by polyacrylamide gel electrophoresis. In contrast to the direct-labeling approach, the indirect-labeling method can be adapted to detect any class of substances for which a highly neutron-activatable, selectively binding ligand is available. The theoretically achievable sensitivity of the indirect-labeling method is in the attomole (10(-18) mol) range.  (+info)

*Zinc deficiency

Swardfager W; Herrmann; Mazereeuw; Goldberger; Harimoto; Lanctôt (2013). "Zinc in depression: a meta-analysis". Biol Psychiatry ... cell division and cell activations. However, having too much or too little zinc can cause these functions to be compromised. In ...

*Copper peptide GHK-Cu

In humans, tripeptide GHK-Cu can promote activation of wound healing, attraction of immune cells, antioxidant and anti- ... reduced wrinkles and strongly stimulated dermal keratinocyte proliferation as determined by histological analysis of biopsies. ... and activation of fibroblasts and mast cells. Ischemic open wounds in rats treated with GHK-copper healed faster and had ...

*Deep ocean minerals

Journal of Food and Drug Analysis. 17 (2): 133-141. Wang, Mei-Lin; Chen, Ying-Ju; Cheng, Fu-Chou (2014). "NIGARI (DEEP SEAWATER ... it decreased the lipid contents of hepatocyte through the activation of AMP-activated protein kinase, thus inhibiting the ...

*Neutron activation analysis

... is used to measure bromide so that extraction is not necessary for analysis. NAA is used in geology ... this technique is known as Radiochemical Neutron Activation Analysis (RNAA). NAA can perform non-destructive analyses on solids ... Neutron activation analysis (NAA) is a nuclear process used for determining the concentrations of elements in a vast amount of ... Neutron activation analysis is also used to create standards in the semiconductor industry. Semiconductors require a high level ...

*Prompt gamma neutron activation analysis

Prompt-gamma neutron activation analysis (PGAA) is a very widely applicable technique for determining the presence and amount ... Harder, J. 2009, 'Material analysis for process control in cement plants', ZKG INTERNATIONAL, 6/7 - 2009, Volume 62, p. 64 http ...

*Bulk material analyzer

Pulsed Fast Thermal Neutron Activation) and the prompt gamma neutron activation analysis (PGNAA). It relies on activation of ... "Prompt gamma neutron activation analysis (PGNAA)." The Cement Plant Operations Handbook. Fifth ed. October 2007. Bond, J.E.; ... The technology most frequently found in bulk material analysis and coal analysis is PFTNA ( ... Capitalizing on the unique gamma ray spectrum associated with each element, the instrument can perform an analysis each minute ...

*Neutron capture

Neutron activation analysis can be used to remotely detect the chemical composition of materials. This is because different ... link) Prompt Gamma-ray Neutron Activation Analysis. International Atomic Energy Agency D. Franklin; R. B. Adamson (1 January ...

*Europium

Meinke, W. W.; Anderson, R. E. (1954). "Activation Analysis of Several Rare Earth Elements". Analytical Chemistry. 26 (5): 907- ... A larger amount of 154Eu is produced by neutron activation of a significant portion of the non-radioactive 153Eu; however, much ...

*Copper Inuit

Wayman, Michael L. (1989). Neutron Activation Analysis of Metals: A Case Study. MASCA Research Papers in Science and ...

*Hans-Joachim Born

H. J. Born Activation analysis, Technical Report Number BMBW-FBK-72-13, 1st Seminar on Activation Analysis, 8 December 1970, ... 1, 29-43 (1973) H. J. Born and J. L. Kim Monostandard activation analysis and its applications: analyses of kale powder and NBS ... P. Wilkniss and H. J. Born On the Activation Analysis of Oxygen with Help of the Reaction O16 (T,n) F18, Intern. J. Appl. ... H. J. Born and D. C. Aumann Activation Analysis Determination of Lithium with the Help of the Reaction Chain 6Li (n,d) 3H and ...

*Neutron activation

In this sense, neutron activation is a non-destructive analysis method. Neutron activation analysis can be done in situ. For ... Neutron activation analysis is one of the most sensitive and accurate methods of trace element analysis. It requires no sample ... Neutron Activation Analysis web Handbook on Nuclear Activation Cross-Sections, IAEA, 1974 Decay Data in MIRD Format from the ... Induced radioactivity Neutron activation analysis Phosphorus-32 produced when sulfur captures a neutron. Salted bomb Table of ...

*Elizabeth Rona

Rona, Elizabeth; Hood, Donald W; Muse, Lowell; Buglio, Benjamin (April 1962). "Activation Analysis of Manganese and Zinc in Sea ... Her analyses with Berta Karlik on the half-lives of uranium, thorium, and actinium decay identified radiometric dating and ... working on analysis of seawater and sediments. Between 1941 and 1942, she conducted work at Carnegie in conjunction with the ...

*Knut S. Heier

He also participated with neutron activation analysis in the Apollo Project. During his time, Norway was an emerging petroleum ...

*Richard Eastell

"Investigation of metabolic bone disease by in vivo neutron activation analysis". Eastell et al. (2003), "Relationship of Early ... The report established that the analysis for the trial had been carried out by Procter & Gamble and that Eastell did not in ...

*Salaspils

The plant partook in neutron activation analysis and gamma irradiation for various materials. It was a pool-type reactor. It is ...

*Inverse trigonometric functions

"On the optimization of some geometric parameters in 14 MeV neutron activation analysis". Nuclear Instruments and Methods. ... Klein, Christian Felix (1924) [1902]. Elementarmathematik vom höheren Standpunkt aus: Arithmetik, Algebra, Analysis (in German ... Klein, Christian Felix (2004) [1932]. Elementary Mathematics from an Advanced Standpoint: Arithmetic, Algebra, Analysis. ...

*Pennsylvania State University Radiation Science & Engineering Center

Neutron activation analysis (NAA) has been practised for decades here in various forms. Currently, graduate student programs ... This is a sub-parts-per-million compositional analysis technique that is comparable to modern mass-spectrometry systems. ... Neutron depth profiling (NDP) a relatively new composition analysis and density technique that is well-suited for semiconductor ...

*Washington State University Reactor

There is a video of this effect on the WSNRC webpage (see references). Neutron activation analysis is a method used to ... Safety Analysis Report for the Washington State University Modified TRIGA Nuclear Reactor. Washington DC: Nuclear Regulatory ... The facility license was renewed for an additional 20 years upon completion of a safety analysis and review. The effective date ... Examples of past research projects that have used this unique and valuable analysis method include determining quantities of ...

*Juniperus phoenicea

... by instrumental neutron activation analysis". Journal of Radiation Research and Applied Sciences. 8 (2): 243-6. doi:10.1016/j. ...

*Chelating resin

"Trace Element Analysis of Natural Water Samples by Neutron Activation Analysis with Chelating Resin." Center for Analytical ... Garg, B. S.; Sharma, R. K.; Bhojak, N.; Mittal, S., "Chelating Resins and Their Applications in the Analysis of Trace Metal ... J. 1999, 61, 94-114.doi:10.1006/mchj.1998.1681 Sharma, R. K.; Mittal, S.; Koel, M., "Analysis of trace amounts of metal ions ...

*Edom

... instrumental neutron activation analysis results". Archaeometry. Oxford, UK: Oxford University. 33 (2): 239-253. doi:10.1111/j. ...

*Cerrillos Turquoise Mines

In 1977, neutron activation analysis linked an artifact from Chetro Ketl to the Cerrillos mines. Vivian & Hilpert 2012, pp. 82- ...

*Radiochemistry

... this activation of stable isotopes to create radioisotopes is the basis of neutron activation analysis. One of the most ... making neutron activation analysis less susceptible to contamination. The effects of a series of different cooling times can be ... and the resulting radioactivity is used in analysis of the molecules and their behaviour. Another example is the work which was ...

*Moche culture

Chapdelaine, Claude; Kennedy, Greg; Uceda Castillo, Santiago (1995). "Neutron activation analysis and local production of ...

*Jenini

The neutron activation analysis supports though the enslaved people came from many different regions, they made pottery from a ... "Chemical Characterization of Ancient Pottery from the Greater Accra Region of Ghana using Neutron Activation Analysis". Nuclear ... "Chemical Characterization of Ancient Pottery from the Greater Accra Region of Ghana using Neutron Activation Analysis". Nuclear ... of ceramics found during archaeological investigations at Jenini was done using instrumental neutron activation analysis and ...

*Prostaglandin-endoperoxide synthase 2

Xiao G, Tsai AL, Palmer G, Boyar WC, Marshall PJ, Kulmacz RJ (February 1997). "Analysis of hydroperoxide-induced tyrosyl ... Minghetti L, Pocchiari M (2007). "Cyclooxygenase-2, prostaglandin E2, and microglial activation in prion diseases". Int. Rev. ...

*Ford Nuclear Reactor

W. W. Meinke, "Pneumatic Tubes Speed Activation Analysis", Nucleonics 17, No. 9, 86-89, September 1959. C. W. Ricker and W. R. ... Nuclear engineers often used the reactor for neutron activation analysis, a science capable of measuring trace amounts of ...
In 1983 it was suggested by Smith et al. [3] that meteorites in the so called SNC group (Shergottites, Nakhlites, Chassignites) originated from Mars, from evidence from an instrumental and radiochemical neutron activation analysis of the meteorites. They found that the SNC meteorites possess chemical, isotopic, and petrologic features consistent with data available from Mars at the time, findings further confirmed by Treiman et al. [4] a few years later, by similar methods. Then in late 1983, Bogard et al. [5] showed that the isotopic concentrations of various noble gases of some of the shergottites were consistent with the observations of the atmosphere of Mars made by the Viking spacecraft in the mid-to-late 1970s.. In 2000, an article by Treiman, Gleason and Bogard gave a survey of all the arguments used to conclude the SNC meteorites (of which 14 had been found at the time) were from Mars. They wrote, "There seems little likelihood that the SNCs are not from Mars. If they were from another ...
Calcium is an essential daily nutrient. Critical functions of life are dependent on narrow concentration limits for plasma calcium, which is subject to obligatory losses from the body requiring a complex homeostatic mechanism and a daily nutrient intake. Stringent regulation of plasma calcium homeostasis is maintained by an intricate pathway of agents for which the biologically active metabolite of vitamin D, 1,25-diydroxyvitamin D, is one component. Ninety nine per cent of total body calcium is present in the skeleton. One of its functions is as a store of body calcium. Vitamin D exerts activities as an endocrine agent at the intestine, kidney and bone tissues and as an autocrine/paracrine agent within bone tissue to both stimulate bone mineral resorption and inhibit bone formation or to inhibit bone resorption and stimulate bone formation. These activities are coordinated by a range of regulatory factors to maintain plasma calcium homeostasis with secondary effects on bone-mineral ...
Neutron activation analysis (NAA) is a precise analytical method, which serves to establish the elemental composition of investigated samples, both quantitative and qualitative. The method is based on the transformation of originally stable atoms in the analysed substance into unstable isotopes, after interaction with neutrons produced in the reactor. The break-up of these unstable nuclides is usually accompanied by characteristic gamma radiation, which is possible to measure, and from its amount subsequently to ascertain a representation of the original mother element. The sensitivity of the method is different for different elements, depending on their atomic characteristics and neutron field parameters, in which the irradiation took place. To examine changes in the neutron field it is possible using NAA methods to use one of three types of standardisation: absolute, relative or comparative.. The LVR-15 reactor is equipped with one channel with pneumatic equipment which allows rapid transport ...
Neutron activation analysis (NAA) is used to determine raw material sources-for example, the source of the clay used to make a pottery vessel. The process involves bombarding an archaeological sample with neutrons to release radioactive particles with distinctive chemical signatures. In the case of pottery, scientists then compare the chemical composition of the pottery clay with the chemical compositions of clays from known raw material sources.. ...
Determination of Manganese, Copper and Zinc in Serum and Packed Blood Cells by Neutron Activation Analysis. Studies on the metabolism of trace ...
Direct alpha spectrometry with three different filter types was investigated for the determination of thorium air concentrations at workplaces in the manufacturing process of discharge lamps containing thoriated tungsten electrodes. The method was compared with neutron activation analysis over an activity range of five orders of magnitude....
We offer a wide range of radiological analyses suited to many applications: neutron activation analysis, drinking water, Radon, Gamma spectrometry, & more
The capabilities of a relatively simple instrumental neutron activation analysis procedure were demonstrated by performing multielement analyses of 240 Food and Drug Administration Total Diet Studies food composites. The analytical results provide a
Neutron activation analysis (NAA): A sensitive analytical technique useful for performing both qualitative and quantitative multi-element analysis of ma...
Accurate estimates for the molecular transport coefficients are critical to predicting the movement of gases in geological media. Here I present a novel methodology for using prompt gamma activation analysis to measure the effective diffusivity of noble gases in a porous medium. I also present a model to estimate the connectivity parameter of a soil from measurements of its saturated conductivity, macro porosity, and pore volume and pore surface fractal dimensions. Experiments with argon or xenon diffusing through a nitrogen saturated geological media were conducted. The noble gas concentration variations at its source were measured using prompt gamma activation analysis and later compared to a numerical diffusion model to estimate the effective diffusion coefficient. Numerical simulations using the estimated diffusivity and the experimental argon data produced results with a correlation parameter R² = 0.98. However, neglecting transport mechanisms other than diffusion largely under-predicted ...
An instrumental neutron activation method for V, Mn and W in alloy steels with a 241 Am/Be isotopic neutron source is described. The samples were irradiated to induce the nuclear reactions 51V(n, γ) 52V, 55Mn(n, γ)56Mn, and 186W(n, γ)187W. The activities were measured with a NaI(TI) detector. Interferences on the measured photopeaks were shown to be negligible by measuring the half-lives of 62V, 56Mn and 187W.These thre elementes were determined in the range 1.512.9% in special steels; manganese in the range 0.51.6% was measured in cast irons. Calibration was done by comparison with results from wet chemistry and x-ray fluorescence spectrometry. The processing times for the vanadium, manganese and tungsten determinations were 11 min, 3 h and 26.3 h, respectively, but these were reduced greatly by intoruding a scheme wherein six samples were simultaneously irradiated and the 56Mn and 187W nuclides were measured sequentially for a series of 66 samples. The average processing time was reduced to ...
Twenty-three (23) industrial, commercial and government laboratories participated in an interlaboratory measurement program using methods of their own choosing. The methods for zinc involved multi-acid digestions followed by iron separation, use of complexing agents and analysis of the filtrate by atomic absorption spectroscopy and fusion of the insoluble, ion exchange and solvent extraction. The determinations involved titrations with ethylenediaminetetraacetate and ferrocyanide, atomic absorption, and instrumental neutron activation analysis. Both fused pellet or fusion followed by X-ray fluorescence, as well as ISO 12739:2006 and ISO/TC 183 N 360 were used by some laboratories.. Other elements were determined by multi acid digestions, microwave digestion, fusion, fire assay (for gold and silver), flame atomic absorption spectroscopy, gravimetric analysis, inductively coupled plasma - optical emission spectroscopy, and instrumental neutron activation analysis. Some laboratories added bromine ...
Microfiche of typescript. [Urbana, Ill.] : Photographic Services, University of Illinois, U of I Library, [1984]. 1 microfiche (40 frames) : negative ; 11 x 15 cm ...
This study compiles and evaluates data from many sources to expand a base of data from which to estimate the activity concentrations and volumes of greater-than-Class C low-level waste that the Department of Energy will receive from the commercial power industry. Sources of these data include measurements of irradiated hardware made by or for the utilities that was classified for disposal in commercial burial sites, measurements of neutron flux in the appropriate regions of the reactor pressure vessel, analyses of elemental constituents of the particular structural material used for the components, and the activation analysis calculations done for hardware. Evaluations include results and assumptions in the activation analyses. Sections of this report and the appendices present interpretation of data and the classification definitions and requirements.
Infrared absorption measurement and activation analyses were carried out for various CZ crystals with different oxygen concentrations. Data for infrared (IR) absorption were found to vary depending upon various factors such as wafer thickness and surface finishing. Under well-defined experimental conditions, however, an accurate linear correlation between the IR absorption and oxygen concentration measured by activation analysis was obtained: 6.0 × absorption coefficient = oxygen concentration in parts per million atomic (ppma). ...
BNA technology is based on a network model to depict functional connectivity. The descriptive network model approach provides insights regarding inter-connectivity of brain networks and can describe the temporal-spatial brain activation patterns applied to various types of data-sets including EEG, MEG and fMRI.. In this study it is proposed that synchronization in brain activity may be disrupted in patients who experience frequent seizures and may correspond to functional impairments (e.g., memory, processing speed). As such, BNA analysis may provide additional data that complement current functional assessments, inform clinical assessment and management of epilepsy, and identify subgroups of patients that might be at risk for poor treatment outcomes. ...
Good Good Academic Press; Hardback/surplus library copy with the usual library stampi ngs; reference number taped to spine; light shelf wear, fading to co ver; li ght corner bumps; otherwise contents in very good condition with cl ean text, tight binding; Bookseller Inventory # ...
Paired 6-month comparisons were available for seven observation periods and 13 gallium nitrate treatment periods. Total-body calcium assessed by delayed-gamma neutron activation (DGNA) decreased in four of seven patients during observation, but increased in nine of 13 patients during gallium nitrate treatment; the mean difference in total-body calcium (TBCa) between the two groups at 6 months was 3%. Median regional bone density assessed by dual-photon absorptiometry (DPA) declined by 1.4% in patients under observation (range, +6.7% to -18.3%), but was unchanged during gallium nitrate treatment (median change, 0%; range, -10.5% to +14.4%). The group mean vertebral fracture index assessed by lateral spine x-rays decreased by 27% during observation compared with 2% during gallium nitrate treatment. Mean body height decreased by 0.57 inches in the observation group and .06 inches in the gallium nitrate group. Patient self-assessment of bone pain showed that seven of 12 gallium nitrate-treated ...
Coal is difficult to digest but neutron activation analysis (NAA) uses a direct measurement to avoid problems that are common when looking for trace elements in coal.
Objectives-To study longitudinal biological monitoring data on urinary and blood cadmium collected in a small cohort of nine workers who had been brazing for several years with solders containing cadmium. Methods-Cadmium was measured by neutron activation analysis in livers and kidneys, and estimates of renal function were carried out in 1983...
A far cry from the traditional archaeological methods, Dr Popelka-Filcoff, the President-Elect of the International Society for Archaeological Sciences, uses radio-analytical and spectroscopic methods such as neutron activation analysis (NAA) and X-ray fluorescence microscopy (XFM) to unravel the stories of the ochre trade.. Ochre is an iron oxide pigment naturally occurring in a range of red, brown, orange and yellow colours across Australia, and has featured in Aboriginal art for thousands of years.. Dr Popelka-Filcoff is examining the types of ochre used on boomerangs, shields and bark paintings, and matching it to the elemental composition of known ochre sources across the country. By examining the artefacts and researching the chemical and physical characteristics of the pigments, she can piece together key points in the ancient ochre exchange routes.. "Ochre is a very culturally important material and because of that, people would travel to various sites to mine the material and would ...
1984) Cystic fibrosis in England and Wales and in Victoria, Australia 1976-1980. Arch. Dis. , 59, 71-83. 85. , Koch C. and H0iby, N. (1996) Improved survival in the Danish Center-treated cystic fibrosis patients: results of aggressive treatment. Pediatr. 273. 99. , Gurkan, M. and Pala, S. (1973) Newborn screening for cystic fibrosis with chloride electrode and neutron activation analysis. Helv. Paediatr. Acta, 28, 165-174. 100. O. ,68,113-119. , 21, 153-158. 86. A. (1998) Inferences for health provision from 101. CDNA copies of these transcripts could then be used as radioactively labeled probes to look for hybridization with DNA fragments from flow-sorted chromosome 7 libraries21. 11, and to look for sequences that were candidates for the CF gene. The task of moving from the genetic map of the region to the precise molecular definition of the disease was a very formidable one because of the physical distance involved. 11 was thought to represent 5000 kb of DNA sequence. A region of this size ...
To determine the percent of patients with refractory breast cancer where molecular profiling and RPMA-based protein pathway activation analysis of their tumor, can change the clinical course of their disease (i.e. produce a Growth Modulation Index (GMI) ≥1.3). The GMI is calculated as the ratio of Progression-free survival (PFS) under molecular profiling and RPMA analysis selected treatment to the time to progression (TTP) for the most recent regimen the patient has progressed on ...
Mutations in sorting nexin 10 (Snx10) have recently been found to account for roughly 4% of all human malignant osteopetrosis, some of them fatal. To study the disease pathogenesis, we investigated the expression of Snx10 and created mouse models in which Snx10 was knocked down globally or knocked out in osteoclasts. Endocytosis is severely defective in Snx10-deficient osteoclasts, as is extracellular acidification, ruffled border formation, and bone resorption. We also discovered that Snx10 is highly expressed in stomach epithelium, with mutations leading to high stomach pH and low calcium solubilization. Global Snx10-deficiency in mice results in a combined phenotype: osteopetrosis (due to osteoclast defect) and rickets (due to high stomach pH and low calcium availability, resulting in impaired bone mineralization). Osteopetrorickets, the paradoxical association of insufficient mineralization in the context of a positive total body calcium balance, is thought to occur due to the inability of the
This is THE thread where you can post ANY question about macros like looking for a rogue macro..., what does this macro do..., or a macro that does this..., etc... Be descriptive of what you want. Use QUOTES when you reply to someone!
new op-tions: in-herit height, ver-ba-tim ig-nore per-cent - li-brary skins * new style en-hanced stan-dard jig-saw - li-brary mag-a-zine: * new macro: \if-boxar-rayempty - li-brary break-able: * op-tion break at al-lows neg-a-tive val-ues now. * the al-go-rithm for breaks in-side a mul-ti-col-umn en-vi-ron-ment was im-proved (user code may be af-fected by this change). * new macro: \tcb-break - li-brary minted: * the de-fault set-tings for minted op-tions are sup-ple-mented by break-lines,au-to-gob-ble - new li-brary poster * new macros and en-vi-ron-ments: tcb-poster, \tcb-poster-set, \poster-box, poster-box-env, tcb-poster-width, tcb-poster-height, tcb-poster-colspac-ing, tcb-poster-rows-pac-ing, tcb-poster-columns, tcb-poster-rows, tcb-poster-col-width, tcb-poster-rowheight * new op-tions: poster, columns, rows, colspac-ing, rows-pac-ing, spac-ing, showframe, width, height, pre-fix, cov-er-age, no cov-er-age, boxes, ...
It was found that trace amount of various ions could be effectively adsorbed onto hydrous magnesium oxide from aqueous solution. Attempts were made to investigate the feasibility of using hydrous...
Continuous M-Reps. In earlier work [4], we developed a deformable modeling framework called the continuous medial representation (cm-rep), which, in simplest terms, is a continuous analog of the m-rep approach by Pizer et al . [3]. Cm-reps are deformable templates that have a special property that the skeleton (medial axis) of the template preserves its branching topology (number and configuration of its branches) during deformation. Furthermore, the skeleton of the deforming template is modeled explicitly as a continuous manifold and the exact geometric relationship between the skeleton and the templates boundary is captured. The skeleton-boundary relationship makes it possible to define a special shape-based coordinate system on the interior of the template. One of the coordinate axes connects points on the skeleton to the corresponding (nearest) points on the boundary, while the other two axes parameterize the skeleton as well as the boundary. As argued in [5], this coordinate system is a natural
UCL Discovery is UCLs open access repository, showcasing and providing access to UCL research outputs from all UCL disciplines.
Hyperkalemia in diabetes is not uncommon, and has been thought to reflect renal retention of potassium. The goal of this study was to test this hypothesis by measuring total body potassium in hyperkalemic diabetic patients and normokalemic diabetic controls. We measured total body potassium (whole body counting of 40K), total body sodium, calcium, and chloride by neutron activation analysis, total body carbon by inelastic neutron scattering, and total body water from the distribution of 3H20.
anganese (Mn) is an essential mineral but is toxic when taken in excess. However, whether its interactions with other minerals in organs and cells are involved in mechanisms underlying Mn toxicity is poorly understood. It was designed a developmental rat model of chronic Mn treatment (Group A: 1 mg MnCl2.4H2) per ml of drinking water; Group B: 10 mg MnCl2.4H2) per ml of drinking water; Group C: 20 mg MnCl2.4H20 per ml of drinking water; Control Group given water without Mn Addition). Employing the model and instrumental neutron activation analysis, two hypotheses were investigated: (i) chronic manganese treatment alters the brain regional distribution of manganese and this altered manganese distribution also leads to region-specific changes of other metals; (ii) chronic manganese treatment induces differential changes in subcellular distributions of metals and electrolytes. In the treated rats, brain Mn level showed dose-related increases, the most pronounced being noted in striatum, ...
Twenty-one industrial, commercial and government laboratories participated in an interlaboratory measurement program using methods of their own choice.. Methods for the determination of the elements included digestion with various combinations of acids on a hot plate; and various types of fusions followed by the determination using inductively coupled plasma - atomic emission spectroscopy and inductively coupled plasma - mass spectrometry. Instrumental neutron activation analysis and X-ray fluorescence on a pressed powder pellet, fused pellet or after a fusion were used for many elements.. The concentration of carbon was determined using combustion followed by infrared spectrometry.. The concentration of sulphur was determined using combustion followed by infrared spectrometry; acid digestion using four acids or fusions followed by inductively coupled plasma - atomic emission spectroscopy, inductively coupled plasma - mass spectrometry or X-ray fluorescence.. ANOVA was used to calculate the ...
The problem of global contamination from uranium (U) is a difficult task. The present investigation was aimed to study the possibilities of using prostate tissue as a biological material for global environmental monitoring of U. The U content in non-hypertrophic prostate of apparently healthy 64 residents of uncontaminated territory was measured by instrumental neutron activation analysis and inductively coupled plasma mass spectrometry. Mean values (M  SΕΜ) for the mass fraction of U in prostate of all subjects taken together was 0.0049 ± 0.0014 mg/kg of dry tissue. In order to estimate the effect of age on the investigated parameter we used three age groups: 13-20 years, 21-40 years, and 41-60 year. Mean values (M  SΕΜ) for the mass fraction of U (mg/kg of dry tissue) in age groups were as follows: 0.0023 ± 0.0007, 0.0021 ± 0.0005, and 0.0077 ± 0.0026, respectively. For the first time statistically significant (p ï‚£ 0.05, t- test) and exponential increase of the U content in
Using various chromatographic techniques (size exclusion, anion exchange, and cation exchange) combined with several detectors (neutron activation analysis and atomic fluorescence spectrometry), an attempt was made to characterize selenium compounds
Obsidian ; Prehistoric Central Europe ; Prehistoric Eastern Europe ; Trace element characterization ; Neutron activation analysis ; Zemplen Mountains, North Eastern Hungary ; Mousterian period ; Neolithic and Copper and Bronze Ages
The contents of zinc, iron, antimony, chromium, cobalt, and scandium in DNA were investigated by neutron activation analysis during the growth of transplanted Sarcoma M-1. In the process of disease development the zinc content in DNA isolated from Sarcoma M-1 remained approximately constant, but the concentration of the other elements varied over wide ranges.. ...
Neutron activation analyses of iodine and uranium in Paleozoic sedimentary rocks from the northern Oklahoma platform of the anadarko show 0.9 to 12.3 Ppm I and 0.07 to 8.7 Ppm u. The samples were taken from strata in Kingfisher County, Oklahoma, where anomalously high concentrations of iodine were found in associated subsurface brines. Micropaleontological examinations reveal algal strands in th
The concentrations of I-129 and the ratios of I-129/I-127 in normal human thyroids collected in Tianjin, China, and some seaweed samples from the Chinese coast were determined by neutron activation analysis. The mean I-129/I-127 ratio in these thyroids was found to be 1.13 x 10(-9), which is two orders of magnitude higher than the level of the pre-nuclear era, but one order of magnitude lower than the level in Europe in the post-nuclear era. There is no significant difference between the ratio of I-129/I-127 in the thyroids for the post-nuclear era from China and other areas, which are considered not to have been directly exposed to 129I emission from a nuclear source, such as Chile, Taiwan and Tokyo. The mean I-129/I-127 ratio in seaweed from the Chinese coast is 2.35 x 10(-10), approximately two orders of magnitude higher than in seaweed collected in the pre-nuclear age, and similar to that from locations without direct exposure to the emission from nuclear installations, influenced only by ...
Apparatus is provided utilizing neutron activation to nondestructively analyze the elemental composition within a sample comprising a specimen and a dielectric medium. The apparatus comprises a base having an opening defining a double elliptical cavity therein. The inner walls of the cavity are coated with a reflective surface to enhance the focusing properties of the cavity. Means are provided for transporting the sample into the cavity, wherein a neutron source is utilized to irradiate the sample causing the emission of particles. The particles travel through the medium and emit a pulse of light. Detector means are provided for detecting the pusles and for generating a signal in accordance therewith. The shape of the cavity ensures that neutrons from the source will pass through a boron hydrocarbon liquid present in the cavity prior to entrance into the detector means. The boron hydrocarbon absorbs these neutrons preventing the neutrons from activating the detectors giving rise to excessive background
UWFDM-882 Pulsed/Intermittent Activation in Fusion Energy Reactor Systems; J.E. Sisolak, S.E. Spangler, D.L. Henderson, March 1992 [Prepared for the 10th Topical Meeting on the Technology of Fusion Energy, 7-12 June 1992, Boston MA (Fus. Tech. 21 (May 1992) 2145]. (10 pages, 592 kB) UWFDM-997 Qualitative Analysis of Physical and Mathematical Approximations Necessary for Induced Radioactivity Calculations in Fusion Devices; P.P.H. Wilson and D.L. Henderson, November 1995 [To be published in Fusion Engineering and Design]. (20 pages, 1.5 MB) UWFDM-980 RACC-Pulse: A Version of the RACC Radioactivity Code for Pulsed/Intermittent Activation Analysis; Q. Wang and D.L. Henderson, May 1995. (25 pages, 756 kB) UWFDM-628 Radioactivity in the Light Ion Fusion Target Development Facility; D.L. Henderson, R.R. Peterson, and G.A. Moses, February 1985 [Presented at the Sixth Topical Meeting on the Technology of Fusion Energy, San Francisco, CA, 3-7 March 1985; Fusion Tech. 8, (July 1985) 1396]. (9 pages, 809 ...
In July, 2012, four researchers at Ryerson University in Toronto, Canada, published a study in "Bone" entitled: "Monitoring bone strontium levels of an osteoporotic subject due to self-administration of strontium citrate with a novel diagnostic tool, in vivo XRF: a case study." This study is significant because it used a non-invasive method (not an invasive method, such as bone biopsy) to analyze the strontium levels of bones in an osteoporotic patient who began taking strontium citrate for the study. Therefore, it was possible to obtain her baseline bone strontium levels prior to initiation of therapy with strontium citrate. The researchers wrote: "By 120 hours, the increase (in bone strontium level) was statistically significant at 0.68 ± 0.07 and 0.93 ± 0.05 (for the finger and ankle), respectively. Further increases occurred within an interval of 90-180 days, with the most recent, after 800 days, at the finger and ankle being 7 and 15 times higher than the initial baseline reading. The ...
In July, 2012, four researchers at Ryerson University in Toronto, Canada, published a study in "Bone" entitled: "Monitoring bone strontium levels of an osteoporotic subject due to self-administration of strontium citrate with a novel diagnostic tool, in vivo XRF: a case study." This study is significant because it used a non-invasive method (not an invasive method, such as bone biopsy) to analyze the strontium levels of bones in an osteoporotic patient who began taking strontium citrate for the study. Therefore, it was possible to obtain her baseline bone strontium levels prior to initiation of therapy with strontium citrate. The researchers wrote: "By 120 hours, the increase (in bone strontium level) was statistically significant at 0.68 ± 0.07 and 0.93 ± 0.05 (for the finger and ankle), respectively. Further increases occurred within an interval of 90-180 days, with the most recent, after 800 days, at the finger and ankle being 7 and 15 times higher than the initial baseline reading. The ...
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Phosphorus even works in our bodies to efficiently use carbohydrates and fat. Phosphorus is a dietary Gal Friday...wearing a dozen hats and ensuring that essential functions go off without a hitch.. Phosphorus is the second most abundant mineral in our bodies (calcium is the first). Luckily, phosphorus is found naturally in many food sources. Its prevalence is highest in animal products (fish, chicken and beef), but it can also be found in milk products, peanuts, tofu and soybeans. The recommended daily phosphorus intake for a healthy adult is about 700mg/day, and if youre meeting your daily protein requirements, chances are youre stocked up on phosphorus too.. Perhaps counterintuitively, the concern we need to have with phosphorus is that we may on occasion get too much. While the RDA is 700mg, the upper limit of daily phosphorus is 4,000mg/day. Thats a huge disparity, and it would be tough to eat that much protein in a single day to account for 4,000mg of phosphorus. The way you quadruple ...
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is defined, this macro expands to nothing. By default, the macro expands to const. The macro can be used in place of const for functions that return a value that should not be modified. The purpose of this macro is to allow us to turn on const for returned constant strings by default, while allowing programmers who find that annoying to turn it off. This macro should only be used for return values and for "out" parameters, it doesnt make sense for "in" parameters.. ...
Comment - How to write a macro to move & size cell (XP) - TGIF, Could you please help me write a macro to move and size Comments. Thanks,
Excel & tiedonsyöttö Projects for $10 - $30. I have two files: 1) Export File 2) Formatted Export File I need a Macro that will take the exported file, and automatically format it to look like I need it to. I will provide a list of the formatti...
I have an excel file with two sheets: Contents of the first sheet: Column 1 Column 2 Column 3 Column 4 a 45 33 5423 d 66 66 4 f 2 2 1 g 2 2 3 s 33 3 2 Contents of the second sheet: Column 1 Column...
The weanling Wistar rats of iodine deficiency were divided into three groups for supplementation of different levels of iodine (iodine-excessive [IE], iodine-adequate [IA], and iodine-deficient [ID]), with a control group (C). The iodine content in the thyroid was determined by epithermal neutron activation analysis. The activities of 5-deiodinase and 5-deiodinase in the brains were assayed by determining the conversion ratios of T4 to T3 and rT3, respectively. The thyroid hormones levels in serum were also tested. The results indicated that the ID group had a goiter containing a small amount of iodine, but the IE group had a slightly swollen thyroid with rich iodine; the concentration of iodine per unit mass of thyroid was lower in group IE than in groups IA and C. The highest 5-deiodinase and lowest 5-deiodinase activities in group ID and the lowest 5-deiodinase activity in group IE were found. The iodine deficiency or excess resulted in a compensated hypothyroid state. The results suggest ...
Our skeleton provides structural support for our muscles and organs. In addition, it serves as a storage depot for 99% of the bodys calcium. The remaining 1% is free to circulate in the blood and is essential for crucial body functions including muscle contraction, nerve function and blood clotting. Bone is not a lifeless structure. It is a living, growing tissue. In order to meet our bodys needs it is constantly being broken down and reformed again in a process called remodeling. The breakdown is done by cells known as osteoclasts which dig holes into the bone, releasing the small amounts of calcium into the bloodstream that are necessary for other vital functions. Cells called osteoblasts then rebuild the skeleton, first by filling in the holes with collagen and then by laying down crystals of calcium and phosphorus. From childhood to adulthood, bone is made faster than it is broken down and bones become larger and denser. Peak bone mass occurs by the mid 20s. The remodeling process, in ...
The calcium-sensing receptor is a multimodal, multimetabolic sensor that mediates the feedback-dependent control of whole body calcium metabolism. Remarkably, in addition to its role in Ca(2+)(o) (extracellular Ca(2+)) sensing, the CaR (Ca(2+)-sensing receptor) also responds to L-amino acids. L-amino acids appear to activate, predominantly, a signalling pathway coupled with intracellular Ca(2+) mobilization, require a threshold concentration of Ca(2+)(o) for efficacy and sensitize the receptor to activation by Ca(2+)(o). Here, we review the evidence that the CaR, like other closely related members of the class 3 GPCR (G-protein-coupled receptor) family including GPRC6A, is a broad-spectrum amino acid-sensing receptor, consider the nature of the signalling response to amino acids and discuss its physiological significance.
Bone Calcium is a unique nutritional supplement formulated with calcium-rich, high collagen Microcrystalline Hydroxypatite (MCH).
override_macro name=current_macro_source dot_parameter=do requires=naml_tools, ,n.if.command_exists id=[n.current_command_id/], ,then, ,n.macro_source. id=[n.current_command_id/] base=[n.current_base_classes/] breadcrumbs=[n.current_breadcrumbs/] , ,n.do/, ,/n.macro_source., ,/then, ,else, ,n.invalid_command_html/, ,/else, ,/n.if.command_exists, ,/override_macro ...
Hi to All, I wanted to try MACRO PHOTOGRAPHY... but i dont know which Lens I should buy... Any SUGGESTIONS that is Lower cost but Good Result on MacroHuh? Budget maybe 500-700sgd?Huh
For some reason when i have a enemy targeted and i use a mouseover macro on em it will not cast it unless im hovering over the targets body and not the na...
Neutron activation is the process in which neutron radiation induces radioactivity in materials, and occurs when atomic nuclei capture free neutrons, becoming heavier and entering excited states. The excited nucleus often decays immediately by emitting gamma rays, or particles such as beta particles, alpha particles, fission products, and neutrons (in nuclear fission). Thus, the process of neutron capture, even after any intermediate decay, often results in the formation of an unstable activation product. Such radioactive nuclei can exhibit half-lives ranging from small fractions of a second to many years.. Neutron activation is the only common way that a stable material can be induced into becoming intrinsically radioactive. All naturally occurring materials, including air, water, and soil, can be induced (activated) by neutron capture into some amount of radioactivity in varying degrees, as a result of production of neutron-rich radioisotopes. Some atoms require more than one neutron to become ...
Geoffrey E. Braswell, John E. Clark, Kazuo Aoyama, Heather I. McKillop, and Michael D. Glascock Abstract. In 1999, the Quispisisa Source of obsidian was located in the Province of Huanca Sancos in central Ayacucho near the village of Sacsamarca. This discovery has been confirmed at the University of Missouri Research Reactor (MURR) by comparing the neautron activation analyses of source samples with artifacts. The Quispisisa source of volcanic glass provided the raw material for most of the obsidian artifacts utilized in central and northern Peru throughout prehispanic times.. Resumen. En 1999, se ubicó la fuente geológica de obsidiana Quispisisa en la provincia de Huanca Sancos en la parte central de Ayacucho, cerca del pueblo de Sacsamarca. Esta identificación ha sido confirmada por analisis de NAA en la Universidad de Missouri, mediante la comparación de muestras del yacimiento con artefactos de sitios arqueológicos. El yacimiento de obsidiana Quispisisa fue la fuente de materia prima ...
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You need at least a small amount of micronutrients and quite a bit of the macro kind, and both are needed not only for optimal nutrition, but for surv
to put macro into personal.xlsb see details in http://www.experts-exchange.com/Software/Office_Productivity/Office_Suites/MS_Office/Excel/Q_28610069.html#a40602548
The Romans used lime (calcium oxide), clacked lime (calcium hydroxide), and hydraulic cement in construction works. Calcium (Latin calx, meaning "lime") was first isolated in its metallic form by Sir Humphrey Davy in 1808 through the electrolysis of a mixture of calcium oxide and mercury oxide.. Chelated calcium refers to the way in which calcium is chemically combined with another substance. Calcium citrate is an example of such a chelated preparation. Calcium may also be combined with other substances to form preparations such as calcium lactate or calcium gluconate. Calcium carbonate can be refined from limestone, natural elements of the earth, or from shell sources, such as oyster. Shell sources are often described on the label as a "natural" source. Calcium carbonate from oyster shells is not "refined" and can contain variable amounts of lead.. Calcium is the most abundant mineral in the human body and has several important functions. More than 99% of total body calcium is stored in the ...
Almost all your bodys calcium is stored in bone, but the tiny amount that circulates in your bloodstream is disproportionately vital to normal physiology.. About half of this circulating calcium (50%) is "ionized", which means it carries electrical charges.. Ionized calcium (Ca2+) is the only physiologically active form that can be recognized by our body and absorbed in our bones by stimulating hormones, which trigger the bone formation process .. Ionized calcium in the blood is so vital that the body cannot permit it to fluctuate. Therefore, even a slight increase in the concentration of ionized calcium in the blood triggers the bone building process to take excess calcium into bones.. Utilizing this process is by far the most effective and safe way to build bone density, since it follows the bodys natural bone building mechanism. ...
PANalytical B.V., Hdl.m.Masch.u.Präzisionswerkz., 1230 Wien, Lemböckgasse 63, WKO: Alle Informationen aus erster Hand, LG Maschinen- und Technologiehandel / Handel mit Maschinen und Präzisionswerkzeugen, PANalytical provides solutions for highly reliable and robust chemical and structural analysis of a wide variety of materials. The combination of our software and instrumentation, based on X-ray diffraction (XRD), X-ray scattering, X-ray fluorescence (XRF), near-infrared (NIR) and pulsed fast thermal neutron activation (PFTNA), provides our customers with elemental and structural information on their materials and is applied in scientific research and industrial process and quality control in virtually every industry segment. With our global presence, expertise and unmatched support organization we help customers characterize materials in almost all industries, applications and materials research areas. Our systems range from laboratory instruments and on-line analyzers to completely automated
Pain management information for pain medicine healthcare professionals in treating and caring for their patients. Clinical Pain Advisor offers news, case studies and more.
Fluorescent macro image of Hermodice carunculata using 450-500 nm excitation and 514 nm LP emission (A); white light image (B); and fluorescent macro compar
PSTricks of-fers an ex-ten-sive col-lec-tion of macros for gen-er-at-ing PostScript that is us-able with most TeX macro for-mats, in-clud-ing Plain TeX, LaTeX, AMS-TeX, and AMS-LaTeX. In-cluded are macros for colour, graph-ics, pie charts, ro-ta-tion, trees and over-lays. It has many spe-cial fea-tures, in-clud-ing a wide va-ri-ety of graph-ics (pic-ture draw-ing) macros, with a flex-i-ble in-ter-face and with colour sup-port. There are macros for colour-ing or shad-ing the cells of ta-bles. The pack-age pstricks-add con-tains bug-fixes and ad-di-tions for PSTricks (among other things). PSTricks or-di-nar-ily uses PostScript ...
All free hd desktop wallpapers and backgrounds with grass, nature, macro, leaflet, blurring, paysage, paysages. Image id 577110.
Bone is living, growing tissue. It is made mostly of collagen, a protein that provides a soft framework, and calcium phosphate, a mineral that adds strength and hardens the framework.. This combination of collagen and calcium makes bone both flexible and strong, which in turn helps it to withstand stress. More than 99 percent of the bodys calcium is contained in the bones and teeth. The remaining 1 percent is found in the blood.. Throughout your lifetime, old bone is removed (resorption) and new bone is added to the skeleton (formation). During childhood and teenage years, new bone is added faster than old bone is removed. As a result, bones become larger, heavier, and denser. Bone formation outpaces resorption until peak bone mass (maximum bone density and strength) is reached around age 30. After that time, bone resorption slowly begins to exceed bone formation.. For women, bone loss is fastest in the first few years after menopause, and it continues into the postmenopausal years. ...
There has been press comment recently about a proof-of-concept macro virus affecting OpenOffice.org and reported in a blog at an anti-virus company. [1] Macros are a useful part of any office suite, allowing users to automate repetitive tasks. These tasks include potentially destructive actions such as modifying and deleting files, which is why macros are of interest to virus writers.. The proof-of-concept macro virus showed that it is possible to write a simple virus-like program using OpenOffice.orgs macro language. This is a known risk with any capable macro language. To mitigate against this risk, by default OpenOffice.org detects if a document contains macros, displays a warning, and will only run the macro if the user specifically agrees. This behaviour conforms to industry best practice.. The OpenOffice.org engineers take the security of the software very seriously, and will react promptly to any new issues. This proof of concept virus is not new information, and does not require ...
from genshi.core import Markup from trac.wiki.macros import WikiMacroBase class HelloWorldMacro(WikiMacroBase): """Simple HelloWorld macro. Note that the name of the class is meaningful: - it must end with "Macro" - what comes before "Macro" ends up being the macro name The documentation of the class (i.e. what youre reading) will become the documentation of the macro, as shown by the !MacroList macro (usually used in the WikiMacros page). """ revision = "$Rev$" url = "$URL$" def expand_macro(self, formatter, name, text, args): """Return some output that will be displayed in the Wiki content. `name` is the actual name of the macro (no surprise, here itll be `HelloWorld`), `text` is the text enclosed in parenthesis at the call of the macro. Note that if there are no parenthesis (like in, e.g. [[HelloWorld]]), then `text` is `None`. `args` are the arguments passed when HelloWorld is called using a `#!HelloWorld` code block. """ return Hello World, text = %s, args = %s % \ ...
from genshi.core import Markup from trac.wiki.macros import WikiMacroBase class HelloWorldMacro(WikiMacroBase): """Simple HelloWorld macro. Note that the name of the class is meaningful: - it must end with "Macro" - what comes before "Macro" ends up being the macro name The documentation of the class (i.e. what youre reading) will become the documentation of the macro, as shown by the !MacroList macro (usually used in the WikiMacros page). """ revision = "$Rev$" url = "$URL$" def expand_macro(self, formatter, name, text, args): """Return some output that will be displayed in the Wiki content. `name` is the actual name of the macro (no surprise, here itll be `HelloWorld`), `text` is the text enclosed in parenthesis at the call of the macro. Note that if there are no parenthesis (like in, e.g. [[HelloWorld]]), then `text` is `None`. `args` are the arguments passed when HelloWorld is called using a `#!HelloWorld` code block. """ return Hello World, text = %s, args = %s % \ ...
Mid-telephoto macro lens includes Canons Hybrid Image Stabilization Technology Compensates for both angular and shift camera vibration Full-time manual focus, and life-size close-up capabilities Near silent internal focusing system with USM
provides a built-in mechanism just for that purpose. Moreover this macro is subject to the multiple evaluation problem which I will discuss in the next episode: thus I do not recommend it as an example of good style when writing macros. Still, I have written it here to compare it with the approach in episode #8: with this macro I have been able to extend the Scheme compiler for within, with just a few lines of code: that is much simpler than writing an external compiler as a preprocessor, as I planned to do before.. As I said ...
ABBREVIATIONS & DEFINITIONS. Hypocalcemia: low calcium levels in the blood, a complication from thyroid surgery that is usually short-term and relatively easily treated with calcium pills. If left untreated, low calcium may be associated with muscle twitching or cramping and, if severe, can cause seizures and/or heart problems. Parathyroid glands: usually four small glands located around the thyroid that secrete parathyroid hormone (PTH) which regulates the bodys calcium levels. Parathyroid hormone (PTH): the hormone that regulates the bodys calcium levels. High levels of PTH cause hypercalcemia, or too much calcium in the blood. Low levels of PTH cause hypocalcemia, or too little calcium in the blood. Hypoparathyroidism: low calcium levels due to decreased secretion of parathyroid hormone (PTH) from the parathyroid glands next to the thyroid. This can occur as a result of damage to the glands during thyroid surgery and usually resolves. This may also occur as a result of autoimmune ...
Thallium (81Tl) has 37 isotopes with atomic masses that range from 176 to 212. 203Tl and 205Tl are the only stable isotopes and 204Tl is the most stable radioisotope with a half-life of 3.78 years. 207Tl, with a half-life of 4.77 minutes, has the longest half-life of naturally occurring radioisotopes.. Thallium-202 (half-life 12.23 days) can be made in a cyclotron[2] while thallium-204 (half-life 3.78 years) is made by the neutron activation of stable thallium in a nuclear reactor.[3]. In the fully ionized state, the isotope 205Tl becomes beta-radioactive, decaying to 205Pb,[4] but 203Tl remains stable.. ...
Module : Distribution.Simple.Build.Macros -- Copyright : Simon Marlow 2008 -- -- Maintainer : [email protected] -- Portability : portable -- -- Generate cabal_macros.h - CPP macros for package version testing -- -- When using CPP you get -- -- , VERSION_,package, -- , MIN_VERSION_,package,(A,B,C) -- -- for each /package/ in @[email protected], which is true if the version of -- /package/ in use is @,= [email protected], using the normal ordering on version -- numbers. -- module Distribution.Simple.Build.Macros ( generate, generatePackageVersionMacros, ) where import Distribution.Package ( PackageIdentifier(PackageIdentifier) ) import Distribution.Version ( Version(versionBranch) ) import Distribution.PackageDescription ( PackageDescription ) import Distribution.Simple.LocalBuildInfo ( LocalBuildInfo, externalPackageDeps ) import Distribution.Text ( display ) -- ------------------------------------------------------------ -- * Generate cabal_macros.h -- ...
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Keywords: Chernobyl; 129I; 131I; 137Cs; Soils. Abstract: Using radioactivity measurements for 131I and 137Cs and nuclear activation analysis (NAA) or accelerator mass spectrometry (AMS) for 129I, ratios of 131I/137Cs and 129I/137Cs have been determined in soils from Belarus. We find that the pre-Chernobyl ratio of 129I/137Cs in Belarus is significantly larger than expected from nuclear weapons fallout. For the Chernobyl accident, our results support the hypothesis that there was relatively little fractionation of iodine and caesium during migration and deposition of the radioactive cloud. For sites having 137Cs ,300 Bq/kg, 129I can potentially give more reliable retroactive estimates of Chernobyl 131I deposition. However, our results suggest that 137Cs can also give reasonably good (±50%) estimates for 131I in Belarus.. URL: http://www.sciencedirect.com/science/article/pii/S0265931X01000807. ...
Results A total 47 (23 sarcopenia, 24 non-sarcopenia) osteoporotic patients were enrolled. The mean age was 71.04±9.64 years, and most patients (88.9%) were women. Sonoelastography showed sarcopenia patients had more soft than non-sarcopenia patients, furthermore the elastography ratio of quadriceps over subcutaneous tissue was lower than non-sarcopenia patients. When the cut points determined by receiver operating characteristic (ROC) curve analysis were applied, The best cut-point of hardness was 42.5 (sensitivity, 0.969; 1-specificity, 0.066), while the best cut-point of quadriceps over subcutaneous tissue was 70.5% (sensitivity, 1.00; 1-specificity, 0.079). ...
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Remove ops and MACROs from Rampart/C and OMXMLSecurity ------------------------------------------------------ Key: AXIS2C-558 URL: https://issues.apache.org/jira/browse/AXIS2C-558 Project: Axis2-C Issue Type: Improvement Components: rampart Affects Versions: Current (Nightly) Reporter: Malinda Kaushalye Kapuruge We need to remove ops structs and MACROs in Rampart/C and in OMXMLSecurity. This would improve the readability of the code. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online. --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected] ...
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1. Make macro: /target Lightwell 2. Go into Key Bindings, near the bottom of Targeting Settings, and bind a key to: Interact with Target 3. Put the lightwell macro right next to the bound key (for ease of pressing both buttons)
Hello All, I need help with some VBA. I have written a macro which utilises Autofilters, but it seems to fail when autofilter is already turned on (ev
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Save 29% Country Life (Biochem) - Bone Solid 240 Capsules Bone Solid Triple Action With Boron, MCHA and Vitamin K With Patented FruiteX-B Clinically Studied MCHA and Vitamin K Clinically Shown to: 1. Increase Mineral Utilization* 2. Strengthen Bones* 3. Support Bone Metabolism* Did you know that bone loss begins for many of us at age 30? Whether you are a man or woman, you will begin to lose bone density year after year. An important step is to regularly replenish and increase your bodys intake of calcium as well as vitamins K1, K2 and D3. Introducing Bone Solid, a specially formulated product that contains a unique natural form of calcium, as well as other minerals that your body recognizes as similar to its own natural bone composition.* Through Bone Solids Triple Action, your bodys calcium will be better replenished and increased:* The calcium contained in Bone Solid is micro-crystalline hydroxyapatite (MCHA), a form of calcium that is closest to the bodys own natural bone composition.* The
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Spreadsheet EX3B.XLS (SIR example). Clear_output: This subroutine clears the temporary storage that will be used when applying the SIR algorithm.. RunSir: This subroutine controls the application of the SIR algorithm. It contains two main steps: (a) calling the subroutine that copies the variables from the spreadsheet to those in the macro, and (b) calling the subroutine that actually implements the SIR algorithm.. Readpars: This subroutine copies the variables from the spreadsheet to those in the macro.. PrintResults: This subroutine copies the results of the SIR algorithm from the macro variables back into the spreadsheet.. Func: This subroutine calculates the likelihood for the current parameter vector.. Sir: This subroutine performs the SIR algorithm. Each step involves generating a parameter vector from the prior, calculating the likelihood for this parameter vector and storing the likelihood in a matrix (indexed by the values for the two parameters). The macro also keeps track of the ...
override_macro name=macro_viewer_header dot_parameter=text, ,n.put_in_head., ,script type=text/javascript, function openVideo() { $(#demo-video).slideDown(); }; function closeVideo() { $(#demo-video).slideUp(); }; ,/script, ,/n.put_in_head., ,div style=clear:both;padding-top:1em, ,div style=float:left;margin-top:1.1em, ,n.macro_options_dropdown/, ,/div, ,h1 style=margin:.5em 0 1em,,n.text/,,/h1, ,/div, ,div class=second-font style=font-size:80%;float:right;margin-top:-4.3em;padding:.3em 0, ,a href=http://naml.nabble.com/ target=_top,NAML documentation,/a,   ,n.naml_video_link/, ,/div, ,/override_macro ...
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ARM assembly for eVC with the Mono Jit macros; Author: Sjoerd_B; Updated: 14 Jul 2007; Section: Windows Phone 7/8; Chapter: Mobile Development; Updated: 14 Jul 2007
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Analysis of gas differential diffusion through porous media using prompt gamma activation analysisAnalysis of gas differential diffusion through porous media using prompt gamma activation analysis

... ... Here I present a novel methodology for using prompt gamma activation analysis to measure the effective diffusivity of noble ... The noble gas concentration variations at its source were measured using prompt gamma activation analysis and later compared to ...
more infohttps://repositories.lib.utexas.edu/handle/2152/23383

Neutron Activation Analysis | Centrum výzkumu ŘežNeutron Activation Analysis | Centrum výzkumu Řež

Neutron Activation Analysis. Neutron Activation Analysis. Neutron activation analysis (NAA) is a precise analytical method, ...
more infohttp://cvrez.cz/en/commercial-services/irradiation-services/neutron-activation-analysis/

Radio-isotope neutron activation analysis for vanadium, manganese and tungsten in alloy steels - Institutional Repository...Radio-isotope neutron activation analysis for vanadium, manganese and tungsten in alloy steels - Institutional Repository...

Radio-isotope neutron activation analysis for vanadium, manganese and tungsten in alloy steels ... An instrumental neutron activation method for V, Mn and W in alloy steels with a 241 Am/Be isotopic neutron source is described ...
more infohttps://repository.uantwerpen.be/link/irua/116445

REE-2 Certificate of Analysis  | Natural Resources CanadaREE-2 Certificate of Analysis | Natural Resources Canada

Instrumental neutron activation analysis and X-ray fluorescence on a pressed powder pellet, fused pellet or after a fusion were ... A one-way analysis of variance technique (ANOVAFootnote 1)and statistical analyses were used to assess the homogeneity of these ... and instrumental neutron activation analysis.. b The data generally includes sets by various fusions, and fused pellet or ... a Statistical analysis of the data warrants classification as provisional despite only 6 or 7 sets of data.. b Tthe data ...
more infohttps://www.nrcan.gc.ca/mining-materials/certified-reference-materials/certificate-price-list/18270

Hyperkalemia in advanced diabetes: Potassium retention or cell transport adaptation? A case control study with body composition...Hyperkalemia in advanced diabetes: Potassium retention or cell transport adaptation? A case control study with body composition...

... and chloride by neutron activation analysis, total body carbon by inelastic neutron scattering, and total body water from the ... and chloride by neutron activation analysis, total body carbon by inelastic neutron scattering, and total body water from the ... A case control study with body composition analysis. International Journal of Body Composition Research, 2(3), 93-98. ... A case control study with body composition analysis. ... Evaluation, Assessment and Analysis. *Program Design and ...
more infohttps://www.rti.org/publication/hyperkalemia-advanced-diabetes-potassium-retention-or-cell-transport-adaptation-case

Hitchhikers Guide to the Galaxy  on Neutron activationHitchhiker's Guide to the Galaxy on Neutron activation

Materials analysis. Main article: Neutron activation analysis Neutron activation analysis is one of the most sensitive and ... Activation analysis · Prompt gamma activation analysis * Fundamental research with neutrons: Ultracold neutrons · ... In this sense, neutron activation is a non-destructive analysis method.. Neutron activation analysis can be done in situ. For ... Some materials are more subject to neutron activation than others, so a suitably chosen low-activation material can ...
more infohttp://hitchhikersgui.de/Neutron_activation

Global Contamination from Uranium: Insights into Problem Based on the Uranium Content in the Human Prostate GlandGlobal Contamination from Uranium: Insights into Problem Based on the Uranium Content in the Human Prostate Gland

... of apparently healthy 64 residents of uncontaminated territory was measured by instrumental neutron activation analysis and ... Zaichick, V., Zaichick, S. Instrumental neutron activation analysis of trace element contents in the rib bone of healthy men. ( ... Zaichick, V., Zaichick, S. Use of neutron activation analysis and inductively coupled plasma mass spectrometry for the ... and Zn contents in intact human prostate investigated by neutron activation analysis. (2011) Appl Radiat Isot 69(6): 827-833. ...
more infohttps://www.ommegaonline.org/article-details/Global-Contamination-from-Uranium-Insights-into-Problem-Based-on-the-Uranium-Content-in-the-Human-Prostate-Gland-/717

Anamol Laboratories Ltd - Manganese Mineral Interaction in BrainAnamol Laboratories Ltd - Manganese Mineral Interaction in Brain

Employing the model and instrumental neutron activation analysis, two hypotheses were investigated: (i) chronic manganese ...
more infohttp://www.anamol.com/index2.php?option=com_content&task=view&id=135&pop=1&page=0&Itemid=105

Preconcentration on hydrous magnesium oxide for neutron activation analysis | SpringerLinkPreconcentration on hydrous magnesium oxide for neutron activation analysis | SpringerLink

... made to investigate the feasibility of using hydrous magnesium oxide as preconcentration agent for neutron activation analysis ...
more infohttps://link.springer.com/article/10.1007/BF02040139

Elemental Characterization of Romanian Crop Medicinal Plants by Neutron Activation AnalysisElemental Characterization of Romanian Crop Medicinal Plants by Neutron Activation Analysis

... that publishes original research articles as well as review articles reporting methods and instrumentation in chemical analysis ... prompt-gamma neutron activation analysis and neutron activation analysis (NAA). NAA is a specific and accurate analysis ... F. De Corte, The k0 standardization method: a move to the optimization of neutron activation analysis [Habilitation thesis], ... The neutron activation analysis was performed using the 10 MW Budapest Research Reactor [9]. Short-term and long-term types of ...
more infohttps://www.hindawi.com/journals/jamc/2017/9748413/

Brain Network Activation Analysis in Epilepsy - Full Text View - ClinicalTrials.govBrain Network Activation Analysis in Epilepsy - Full Text View - ClinicalTrials.gov

Brain Network Activation Analysis in Epilepsy. The safety and scientific validity of this study is the responsibility of the ... This is a prospective study investigating the utility of Brain Network Activation (BNA) analysis in patients with epilepsy. ... BNA analysis may provide additional data that complement current functional assessments, inform clinical assessment and ... and healthy control individuals measured using analysis of EEG Event Related Potential (ERP) data. Clinical assessments battery ...
more infohttps://www.clinicaltrials.gov/ct2/show/NCT03265925?term=epilepsy&rank=19

Photon activation analysis of environmental water: Studies of direct sample irradiation | SpringerLinkPhoton activation analysis of environmental water: Studies of direct sample irradiation | SpringerLink

During trace element analysis in water by photon activation analysis it has been shown that long time bremsstrahlung exposure ... During trace element analysis in water by photon activation analysis it has been shown that long time bremsstrahlung exposure ... C. SEGEBADE, H.-P. WEISE, G. LUTZ, Photon Activation Analysis, de Gruyter, Berlin, New York, 1988.Google Scholar ... Physical Chemistry Inorganic Chemistry Analytical Sensitivity Water Sample Activation Analysis This is a preview of ...
more infohttps://link.springer.com/article/10.1007/BF02037196

Some Activation Analyses of Six Trace Elements in Marine Biological Ashes | NatureSome Activation Analyses of Six Trace Elements in Marine Biological Ashes | Nature

The method of activation analysis not only increases the sensitivity for many trace elements1 but also eliminates the necessity ... for running blank analyses on the reagents since small amounts of impurities contained in the reagents will not be measured. ... Some Activation Analyses of Six Trace Elements in Marine Biological Ashes. *R. FUKAI1. ,2. nAff2 & ... The method of activation analysis not only increases the sensitivity for many trace elements1 but also eliminates the necessity ...
more infohttps://www.nature.com/articles/184815a0?error=cookies_not_supported&code=b628c50a-feb3-4c30-978f-3fbcb6dcdfc3

Determination of nuclear waste form leach rates by activation analysis - Digital LibraryDetermination of nuclear waste form leach rates by activation analysis - Digital Library

Activation analysis was used to determine the leach rates of Na, Mo, Cs, Ba, La, Nd, Sm, Hf, and U by distilled water from two ... Activation analysis was used to determine the leach rates of Na, Mo, Cs, Ba, La, Nd, Sm, Hf, and U by distilled water from two ... Activation analysis was used to determine the leach rates of Na, Mo, Cs, Ba, La, Nd, Sm, Hf, and U by distilled water from two ... Schuman, R.P. Determination of nuclear waste form leach rates by activation analysis, article, January 1, 1979; United States ...
more infohttps://digital.library.unt.edu/ark:/67531/metadc1099361/

Neutron Activation Analysis and StatisticsNeutron Activation Analysis and Statistics

... The application of instrumental neutron activation analysis and multivariate ... Related Conference of Neutron Activation Analysis and Statistics. 27-28th August, 2018 ... The application of instrumental neutron activation analysis and multivariate statistics for archaeological studies of ceramics ...
more infohttps://www.omicsonline.org/conferences-list/neutron-activation-analysis-and-statistics

Determination of thorium in seawater by neutron activation analysis and mass spectrometry - Digital LibraryDetermination of thorium in seawater by neutron activation analysis and mass spectrometry - Digital Library

... sup 232/Th in seawater has made possible rapid sampling and analysis of this long-lived, non-radiogenic thorium isotope on ... The recent development of neutron activation analysis and mass spectrometric methods for the determination of / ... Huh, Chih-An. Determination of thorium in seawater by neutron activation analysis and mass spectrometry, article, January 1, ... The recent development of neutron activation analysis and mass spectrometric methods for the determination of /sup 232/Th in ...
more infohttps://digital.library.unt.edu/ark:/67531/metadc1066828/

Determination of phosphate in natural waters by activation analysis of tungstophosphoric acidDetermination of phosphate in natural waters by activation analysis of tungstophosphoric acid

In the activation analysis method, molybdate and tungstate ions are added to samples containing phosphate ion to form ... After activation of an aliquot of the organic phase for 1 hour at a flux of 1013 neutrons per cm2, per second, the gamma ... If the ratio of phosphorus to sulfur or chlorine is small, as it is in most natural waters, accurate analyses by these methods ... Activation analysis may be used to determine quantitatively traces of phosphate in natural waters. Methods based on the ...
more infohttps://pubs.er.usgs.gov/publication/70006502

Neutron activation analysis - WikipediaNeutron activation analysis - Wikipedia

Neutron activation analysis is used to measure bromide so that extraction is not necessary for analysis. NAA is used in geology ... this technique is known as Radiochemical Neutron Activation Analysis (RNAA). NAA can perform non-destructive analyses on solids ... Neutron activation analysis (NAA) is a nuclear process used for determining the concentrations of elements in a vast amount of ... Neutron activation analysis is also used to create standards in the semiconductor industry. Semiconductors require a high level ...
more infohttps://en.wikipedia.org/wiki/Neutron_activation_analysis

Evgeniya Schastnaya - Using Signaling Pathway Activation Analysis for Drugs for Androgenetic Alopecia | HairLossTalk ForumsEvgeniya Schastnaya - Using Signaling Pathway Activation Analysis for Drugs for Androgenetic Alopecia | HairLossTalk Forums

AY0Ns-6hOiU Using Signaling Pathway Activation Analysis to Identify Prospective Drugs that May Be Used for Treatment... ... Using Signaling Pathway Activation Analysis to Identify Prospective Drugs that May Be Used for Treatment of Androgenetic ... Evgeniya Schastnaya - Using Signaling Pathway Activation Analysis for Drugs for Androgenetic Alopecia. Discussion in 9th World ...
more infohttps://www.hairlosstalk.com/interact/threads/evgeniya-schastnaya-using-signaling-pathway-activation-analysis-for-drugs-for-androgenetic-alopecia.96824/

Residual Chromium in Leather by Instrumental Neutron Activation Analysis | Science PublicationsResidual Chromium in Leather by Instrumental Neutron Activation Analysis | Science Publications

... who use tannins from Acacia nilotica as tanning agent was below the detection limit of Instrumental Neutron Activation Analysis ... Residual Chromium in Leather by Instrumental Neutron Activation Analysis S. Okoh, I. O. Okunade, D. J. Adeyemo, Y. A. Ahmed, A ... who use tannins from Acacia nilotica as tanning agent was below the detection limit of Instrumental Neutron Activation Analysis ...
more infohttp://thescipub.com/abstract/10.3844/ajassp.2012.327.330

Prompt gamma neutron activation analysis - WikipediaPrompt gamma neutron activation analysis - Wikipedia

Prompt-gamma neutron activation analysis (PGAA) is a very widely applicable technique for determining the presence and amount ... Harder, J. 2009, Material analysis for process control in cement plants, ZKG INTERNATIONAL, 6/7 - 2009, Volume 62, p. 64 http ...
more infohttps://en.wikipedia.org/wiki/Prompt_gamma_neutron_activation_analysis

Accumulation of silver nanoparticles in mice tissues studied by neutron activation analysis | Springer for Research &...Accumulation of silver nanoparticles in mice tissues studied by neutron activation analysis | Springer for Research &...

Silver nanoparticles Brain Liver Blood Accumulation Neutron activation analysis This is a preview of subscription content, log ... Neutron activation analysis revealed silver in all examined tissues with its highest concentrations in liver followed by brain ... Pavlov SS, Dmitriev AYu, Frontasyeva MV (2016) Automation system for neutron activation analysis at the reactor IBR-2, Frank ... Greenberg RR, Bode P, De Nadai Fernandes EA (2011) Neutron activation analysis: a primary method of measurement. Review. ...
more infohttps://rd.springer.com/article/10.1007%2Fs10967-018-6193-6

Determination of phosphate in natural waters by activation analysis of tungstophosphoric acid | Semantic ScholarDetermination of phosphate in natural waters by activation analysis of tungstophosphoric acid | Semantic Scholar

Determination of phosphate in natural waters by activation analysis of tungstophosphoric acid by Herbert E. Allen et al. ... Determination of phosphate in natural waters by activation analysis of tungstophosphoric acid. @inproceedings{ ... Determination of phosphate in natural waters by activation analysis of tungstophosphoric acid}, author={Herbert E. Allen and ...
more infohttps://www.semanticscholar.org/paper/Determination-of-phosphate-in-natural-waters-by-of-Allen-Hahn/ed67a63617315994131e7e8d2a61e21ab6f0d2ed

analysis activation: Topics by WorldWideScience.organalysis activation: Topics by WorldWideScience.org

on modern trends in activation analysis, Copenhagen, 1986, June 23-27 : Activation techniques ... Neutron activation analysis applied to the study of the composition of Cuban geological samples from petroleum ores [Text] : ... Proceedings of the 9th international conference on modern trends in activation analysis : MTAA-9,Sept.24-30,1995,Seoul,Korea ... Proceedings of the 9th international conference on modern trends in activation analysis : MTAA-9,Sept.24-30,1995,Seoul,Korea ...
more infohttps://worldwidescience.org/topicpages/multi/RU/a/analysis+activation.html

Determination of essential elements with functions in oriental medicinal prescriptions for thyroid cancer patients using...Determination of essential elements with functions in oriental medicinal prescriptions for thyroid cancer patients using...

Lichen samples collected from tree barks were cleaned, freeze-dried and analyzed by neutron activation analysis.... ... are determined using instrumental neutron activation analysis. The biological certified reference material was used for ... The relative errors and standard deviations for the iodine analysis were less than 2.88 and 18.5%, respectively. The level of ... Elemental Assessment of Some Core Herbal Plants used in Northern Ghana by Instrumental Neutron Activation Analysis. Adazabraa, ...
more infohttp://connection.ebscohost.com/c/articles/70119786/determination-essential-elements-functions-oriental-medicinal-prescriptions-thyroid-cancer-patients-using-instrumental-neutron-activation-analysis
  • We measured total body potassium (whole body counting of 40K), total body sodium, calcium, and chloride by neutron activation analysis, total body carbon by inelastic neutron scattering, and total body water from the distribution of 3H20. (rti.org)
  • If the ratio of phosphorus to sulfur or chlorine is small, as it is in most natural waters, accurate analyses by these methods are difficult to achieve. (usgs.gov)
  • EC Commission Regulation No 333/2007 of 28 March 2007, Laying down the methods of sampling and analysis for the official control of the levels of lead, cadmium, mercury, inorganic tin, 3-MCPD and benzo(a)pyrene in foodstuffs. (springer.com)
  • Methods The present study is a quantitative meta-analysis of the current VBM findings aimed at delineating the cortical regions with consistently increased or reduced GM concentrations. (bmj.com)
  • This unit describes three methods for the detection of caspase activation as cells undergo apoptosis. (elsevier.com)
  • The calculated threshold for each voxel in this analysis was p = .00050. (nih.gov)
  • The calculated threshold for each voxel in these analyses were p = .000026 for recognition (red), p = .000025 for naming (green), and p = .00014 for action (blue) analysis. (nih.gov)
  • The method of activation analysis not only increases the sensitivity for many trace elements 1 but also eliminates the necessity for running 'blank' analyses on the reagents since small amounts of impurities contained in the reagents will not be measured. (nature.com)
  • In the activation analysis method, molybdate and tungstate ions are added to samples containing phosphate ion to form tungstomolybdophosphoric acid. (usgs.gov)
  • Until the introduction of ICP-AES and PIXE, NAA was the standard analytical method for performing multi-element analyses with minimum detection limits in the sub-ppm range. (wikipedia.org)
  • The method restricts anatomical normalization, spatial smoothing and random effects statistical analysis to the space inside and around a structure of interest. (ucl.ac.uk)
  • A single-molecule fluorescence resonance energy transfer (FRET) method has been developed to observe the activation of the small G protein Ras at the level of individual molecules. (pnas.org)
  • To facilitate approaches to this difficult but important problem, in this research, we have developed a method to visualize the activation of single individual molecules of Ras and the behavior of activated Ras molecules at video rate. (pnas.org)
  • 16 ) developed a method to detect Ras activation by using CFP and YFP, but because single molecules of CFP are not detectable by the available technology (A.K., unpublished observations), this FRET probe cannot be used for single-molecule studies. (pnas.org)
  • When coupled with subcellular fractionation, this method can provide large amounts of temporal and spatial information about caspase activation. (elsevier.com)
  • By suitable reagent purification, counting for longer times, and activation of larger aliquots, the detection limit could be lowered several hundredfold. (usgs.gov)
  • For example, the effector molecule Raf-1 kinase is activated by Ras, but how this activation occurs is unknown, although a dimerization mechanism through Ras dimers and other protein factors has been proposed ( 3 ). (pnas.org)
  • Despite these intensive efforts to understand the signal-transduction mechanism from Ras to its effector molecules, the means by which these scaffolding proteins, specialized membrane domains, and oligomerization processes are involved, selected, and orchestrated for the activation of the Ras effector molecules have remained unknown. (pnas.org)
  • Surprisingly, in AOX1A, replacement of CysI by alanine, which cannot form a (thio)hemiacetal, led to even higher activities, pointing to an alternative mechanism of activation. (plantphysiol.org)
  • The strongest evidence for this mechanism comes from analysis of a bacterial enhancer-like element ( 32 ). (asm.org)
  • A comparative analysis of the AOX isoenzymes AOX1A, AOX1C, and AOX1D from Arabidopsis ( Arabidopsis thaliana ) revealed that cysteine residues, CysI and CysII, are both involved in 2-oxo acid activation, with AOX1A activity being more increased by 2-oxo acids than that of AOX1C and AOX1D. (plantphysiol.org)
  • One striking difference between yeast Saccharomyces cerevisiae and metazoans, however, is the distance over which transcriptional activation occurs. (asm.org)
  • The descriptive network model approach provides insights regarding inter-connectivity of brain networks and can describe the temporal-spatial brain activation patterns applied to various types of data-sets including EEG, MEG and fMRI. (clinicaltrials.gov)
  • Thus, the activation strain model constitutes a unifying framework that furthers the development of cross-disciplinary concepts throughout various fields of chemistry. (nih.gov)
  • As such, BNA analysis may provide additional data that complement current functional assessments, inform clinical assessment and management of epilepsy, and identify subgroups of patients that might be at risk for poor treatment outcomes. (clinicaltrials.gov)
  • Functional networks of brain activity in Epilepsy (Right and Left lobe) and healthy control individuals measured using analysis of EEG Event Related Potential (ERP) data. (clinicaltrials.gov)
  • It also provides an opportunity to analyze the shape and thickness of structures concurrently with functional activation. (ucl.ac.uk)
  • This well timed book covers instructed measurements in addition to not on time activation measurements utilized in chemical research of the weather. (aspentechalpha.com)
  • Analysis of activation of OVA-specific T cells. (nih.gov)
  • The regulation by the infused T cells impeded the development of fully competent OVA-specific effector/memory Th2 lymphocytes without inhibiting the initial proliferative response of T cells or promoting activation-induced cell death. (nih.gov)
  • The activation strain model and molecular orbital theory. (nih.gov)
  • The activation strain model is a powerful tool for understanding reactivity, or inertness, of molecular species. (nih.gov)
  • However, there is no clear understanding of the effect of distance on activation in S. cerevisiae in vivo and no knowledge concerning factors that might play a role in controlling this effect. (asm.org)
  • NAA can perform non-destructive analyses on solids, liquids, suspensions, slurries, and gases with no or minimal preparation. (wikipedia.org)
  • To identify factors affecting long-distance activation, we screened for mutants allowing activation of a reporter when the UAS-TATA distance is 799 bp. (asm.org)
  • To study the potential for long-distance activation in S. cerevisiae , we constructed and analyzed reporters in which the UAS-TATA distance varied. (asm.org)
  • Finally, the optimum (lowest) analysis time was sought for each group using the optimum parameter values of the individual elements to define the starting position of the search. (aspentechalpha.com)
  • B) Summary of individual and conjunction ALE analyses in the form of a Venn diagram. (nih.gov)
  • During trace element analysis in water by photon activation analysis it has been shown that long time bremsstrahlung exposure of the water samples followed by a post-concentration step yielded the most reliable results. (springer.com)
  • Taken together, our results demonstrate that AOX isoforms are differentially activated and that activation at CysI and CysII is additive. (plantphysiol.org)
  • Our results strongly suggest that long-distance activation in S. cerevisiae is normally limited by Sin4 and other factors and that this constraint plays a role in ensuring UAS-core promoter specificity in the compact S. cerevisiae genome. (asm.org)
  • The relative errors and standard deviations for the iodine analysis were less than 2.88 and 18.5%, respectively. (ebscohost.com)
  • Activation analysis may be used to determine quantitatively traces of phosphate in natural waters. (usgs.gov)