A slightly modified procedure of direct substoichiometric isotope dilution analysis is theoretically treated and its advantages are stated. The precision of one case of reverse isotope dilution is...

1. Standard radioisotope dilution techniques employing [3H]water and [22Na]sodium chloride have been used to determine the total body water and total exchangeable sodium of 20 male and 10 female normal Ghanaians (Africans) aged 19-25 years.. 2. Lean body mass and total body fat are calculated as a percentage of body weight; the total exchangeable sodium values have been expressed in relation to lean body mass.. 3. Comparison of the data for Ghanaian subjects with published figures for Caucasian subjects of similar age shows that the Ghanaian men have much less total body fat and the women a little less total body fat than their Caucasian counterparts.. 4. Total exchangeable sodium expressed in terms of lean body mass shows close agreement in both men and women. ...

Mercury speciation in solid sample matrices has been investigated using high performance liquid chromatography (HPLC) coupled with multicollector sector field (MCSF) and quadrupole (Q) inductively coupled plasma mass spectrometry (ICP-MS) for species specific isotope dilution mass spectrometry (IDMS). 199Hg enriched methylmercurychloride has been synthesised and recovered in the solid form for use as a spike material. The stability of methylmercury during the IDMS procedure was investigated using 199Hg and 13C labelled methylmercury isotopomers and ¹H Nuclear Magnetic Resonance spectroscopy. IntermoIecuJar exchange of the methylmercury halide counter ion was observed, the halide counter ion order of preference was l,Br,Cl. No evidence was found for the decomposition, or formation, of methylmercury during equilibration with soil (NIST2710 SRM) or dogfish muscle (DORM-2 CRM), or during chromatographic separation. The extent of equilibration between the spike and the particulate bound mercury ...

Bodystat Quadscan 4000 Touch Screen. Used internationally in medical research and clinical applications, the Bodystat Quadscan 4000 Touch Screen multi-frequency Bioelectrical Analyser offers a quick, easy, portable and economical non-invasive alternative to other methods of fluid assessment and Body Composition analysis including radioisotope dilution, underwater weighing and many more.. The Bodystat Quadscan 4000 Touch measures at 11 different frequencies ...

The measurement of total folate in clinical material became possible with the introduction of the Lactobacillus casei assay some 50 years ago. The use of lactoglobulin as a folate binding agent to measure folate by radioisotope dilution, later fluorimetry, is more user friendly but gives largely similar results.. The principal folate … ...

Science shouldnt be a term used loosely. It should, at minimum, be indicative of using a definitive method which includes observation, ask a question, form a hypothesis, analyze results, control groups, statistical methods, case study, and/or other avenues to come. ...

Isotope Dilution Mass Spectrometry (IDMS) has become an essential tool in research laboratories and is increasingly used in routine analysis labs (including environmental, food safety and clinical applications). This is the first textbook to present a comprehensive and instructive view of the theory and applications of this growing technique.The main objective of this book is to cover the theory and applications of Isotope Dilution in Analytical Chemistry. The scope is comprehensive to include elemental analysis, speciation analysis, organic analysis and biochemical and clinical analysis together with applications in metabolism studies and traceability of goods. Until now there have been no books published with the same general scope (only book chapters on particular applications). This is a textbook focused at post-graduate level covering the basic knowledge required for doctoral studies in this field. Isotope Dilution Mass Spectrometry will also outline practical applications of interest for routine

Isotope dilution analysis is a method of determining the quantity of chemical substances. In its most simple conception, the method of isotope dilution comprises the addition of known amounts of isotopically-enriched substance to the analyzed sample. Mixing of the isotopic standard with the sample effectively dilutes the isotopic enrichment of the standard and this forms the basis for the isotope dilution method. Isotope dilution is classified as a method of internal standardisation, because the standard (isotopically-enriched form of analyte) is added directly to the sample. In addition, unlike traditional analytical methods which rely on signal intensity, isotope dilution employs signal ratios. Owing to both of these advantages, the method of isotope dilution is regarded among chemistry measurement methods of the highest metrological standing. Analytical application of the radiotracer method is forerunner of isotope dilution. This method was developed in the early 20th century by George de ...

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Crivellari, Stefano; Chiessi, Cristiano Mazur; Kuhnert, Henning; Häggi, Christoph; Portilho-Ramos, Rodrigo Costa; Zeng, Jing-Ying; Zhang, Yancheng; Schefuß, Enno; Mollenhauer, Gesine; Hefter, Jens; Alexandre, Felipe; Mulitza, Stefan; Sampaio, Gilvan (2018): HS1 records bases on isotope, inorganic and organic geochemistry of sediment cores GeoB16224-1 and GeoB16212-2. PANGAEA, https://doi.org/10.1594/PANGAEA.887797, Supplement to: Crivellari, S et al. (2018): Increased Amazon freshwater discharge during late Heinrich Stadial 1. Quaternary Science Reviews, 181, 144-155, https://doi.org/10.1016/j.quascirev.2017.12.005

Callaghan, D. (1969). Some investigations of intramolecular screening effects on 1H and 19F N.M.R. chemical shifts. PHD thesis, Aston University. Cliffe, K.R. (1969). Studies of deposition on cooled tubes with special reference to coal-fired boilers. PHD thesis, Aston University. Cole, I.M. (1969). An investigation of the rolling of cylindrical tube by grooved roll. PHD thesis, Aston University. Conceicao, P.H. (1969). A study of stray load losses in core clamp plates of salient pole synchronous machines. Masters thesis, Aston University. Cooksey, B.G. (1969). Substoichiometry in isotope dilution analysis:automation of the process with reference to mercury. PHD thesis, Aston University. Costello, J. (1969). Flow and transfer processes at abrupt expansions. PHD thesis, Aston University. ...

A method for measuring local venous flow by a constant indicator dilution technique is described. The optimal conditions have been outlined and the accuracy tested in vitro and found to be within ±3%. When compared with direct measurements of venous flow in dogs, its accuracy was within ±5%. The method is safe, easy to perform and, with the catheters described, flow can be measured over ranges of 20 to 5,700 ml/min in any vein greater than 4 mm inner diameter in which the catheter tips can be introduced.. ...

NEW ZEALAND - A researcher at the Geological and Nuclear Sciences (GNS) National Isotope Centre has developed a test based on isotope analysis to distinguish between battery (cage) barn, free-range and organic eggs based on the hens diet.

TQ-F (fluorescence tracer) - mobile discharge measurement System for turbulent rivers with unknown cross-section Profile by means of Tracer Dilution method.

Mass spectroscopy is increasingly used for measuring the presence and amounts of substances in samples, with applications in food, security, health and safety industries and is considered an excellent measurement tool. One of the methods used to identify multiple compounds in a sample is isotope dilution. However, this method does not account for the sample changes during the analysis and composition changes must be determined mathematically or by conducting multiple experiments. Due to this complexity, uptake of this advanced calibration approach is slow. Current algorithms to address simultaneous compound formation and degradation using multiple spiking isotope dilution mass spectrometry are extremely complex and do not result in explicit results nor reliable estimates of uncertainty in those results. Many algorithms give identical numerical results for the initial amount of substances in the sample, but the coefficients that describe the changes during the analysis differ.. There is a demand ...

Corrinoids from various ovine tissue samples (liver, blood, small intestinal fluid and faeces) were analysed using a combination of high-performance liquid chromatography (HPLC) and a radioisotope dilution assay (RIDA) to estimate the distribution of corrinoids - the cobalamins hydroxocobalamin (OH-cbl), methylcobalamin (me-cbl) and 5-deoxyadenosylcobalamin (ado-cbl), and cobalamin analogues - in these tissues. Samples were taken from either cobalt-deficient or cobalt-replete ewes, and ruminant and pre-ruminant lambs. In liver, ado-cbl predominated, followed by analogues, OH-cbl and me-cbl. Supplementation with either cobalt (ruminant) or vitamin B12 injections (pre-ruminant) increased the amount of ado-cbl and decreased analogues. In blood, OH-cbl predominated, followed by ado-cbl, analogues and me-cbl, respectively. In small intestinal fluid, the distribution from largest to smallest percentage was analogues, ado-cbl, OH-cbl and me-cbl. In faeces, analogues constituted the greatest proportion,

Close The Infona portal uses cookies, i.e. strings of text saved by a browser on the users device. The portal can access those files and use them to remember the users data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser. ...

1. Rat thymus cells were incubated in homologous serum (10%) and medium 199. The effects of various quantities of thymidine or deoxycytidine (0-30μm) on the radioactive labelling of cells with the corresponding radioactive deoxynucleoside were examined. From plots of the reciprocal of the radioactivity incorporated against the total deoxynucleoside concentration (`isotope-dilution plots), values were obtained for (a) the Vmax. of the rate-limiting step governing incorporation of the deoxynucleoside, and (b) the concentration of the pool of compounds competing with the radioactive deoxynucleoside at that rate-limiting step. From changes in these values under different experimental conditions inferences were drawn on the position and control of the rate-limiting step within intact cells. 2. Isotope-dilution plots for deoxycytidine were linear, whereas plots for thymidine were bimodal, indicating an abrupt increase in both the Vmax. and pool concentration at a critical thymidine concentration ...

Tracking cardiac output by a saline dilution technique using esophageal catheter electrodes.: This paper presents preliminary results of a study in which saline

Pleasure Convenient is a clever smash-up of styles. At just over two minutes the track is primarily interested in an old-school d-beat attack with plenty of playing Guitar Hero on expert level drum fills. But no track on Isotope is merely how it begins. Like most of the compositions across this record, subtle complexity pops up like Punxsutawney Phil trying not to see his shadow after a long night of consuming way too much sweet vermouth on the rocks with a twist. As the track decays into a marching rhythm, heavy on the snare, a syncopated rhythm needles through the fracas to take center stage. Although brief, its a revealing look into the sheer breadth of influences that ended up being honored in a band that started out with the goal of sounding like ultimate Japanese old school band Bastard.. Rolling out with all the groove and authority of a Tragedy track, Bloody Dove of Peace represents a convergence of styles. The rhythm section bursts forward, coming off a roll on the toms to end the ...

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Category:Radioisotope fuels See also: Radioisotope thermoelectric generator Radioisotope heater unit Radioisotope piezoelectric generator Thermionic converter

P32 and other tracer studies of eye information including symptoms, causes, diseases, symptoms, treatments, and other medical and health issues.

The study of blood-tissue exchange by the multiple indicator dilution technique often needs frequent sampling in the blood of the indicator dilution curves (IDC). Usually, this requires the use of a catheter supported by a pump. This causes a distortion in the IDC, which must be removed for proper interpretation of the data. A deconvolution-based methodology to remove IDC distortion is presented. First, the catheter impulse response is modelled by means of data obtained from a suitable experiment. Then the reconstruction of the blood IDC is tackled by a new nonparametric deconvolution algorithm, which provides (quasi) time-continuous signals and exploits statistically based criteria for the choice of the regularisation parameter. The methodology is applied to the removal of cathether distortion in studies of glucose blood-tissue exchange in the human forearm and myocardium.. ...

Strong distinctions in metabolite concentrations were found with the quantification strategies applied. For dilutions ranging from 1:2 to 1:20 internal calibration and isotope dilution mass spectrometry were found to be most suitable for the compensation of matrix effects. Further more, the results showed that U13C4-aspartate as internal standard could be used for various amino acids in the chromatographic run. Using isotope dilution, where each metabolite has its own labelled analogue, the linear range of the calibration curve and the coefficient of correlation (up to 0.9999) were improved. The procedure of standard addition was only necessary for very low concentrated metabolites. To avoid this time consuming procedure, samples can as well be concentrated and measured via internal calibration instead. External calibration was sufficient for biological samples in dilutions of 1:20 or higher, because the measurements were hardly influenced by matrix effects. ...

12(S)-HETE-d8, Deuterium Conjugated/Tagged from Cayman Chemical,12(S)-HETE-d8 is used as an internal standard for the quantification of 12(S)-HETE by stable isotope dilution mass spectrometry.,biological,biology supply,biology supplies,biology product

Converts the newer IDMS (isotope dilution mass spectrometry) serum creatinine assay to the older, conventional assay (eg, alkaline picrate).

Mangerich A., Veith S., Popp O., Fahrer J., Martello R., Bohr V.A., Bürkle A. (2012) Quantitative analysis of WRN exonuclease activity by isotope dilution mass spectrometry, Mechanisms of Ageing and Development, 133, 575-579 Nikolova T., Hennekes F., Bhatti A., Kaina B. (2012) Chloroethylnitrosourea-induced cell death and genotoxicity: cell cycle dependence and the role of DNA double-strand breaks, HR and NHEJ, Cell Cycle, 11, 2606-2619 Lillich M., Che X., Weil T., Barth H., Fahrer J. (2012) Streptavidin-conjugated C3 protein mediates the delivery of mono-biotinylated RNAse A into macrophages, Bioconjugate Chemistry, 23, 1426-1436 Meise R., Tomicic M.T., Kaina B., Christmann M. (2012) The chloroethylating anticancer drug ACNU induces FRA1 that is involved in drug resistance of glioma cells, Biochimica et Biophysica Acta, 1823, 1199-1207 Bauer M., Goldstein M., Heylmann D., Kaina B. (2012) Human monocytes undergo excessive apoptosis following temozolomide activating the ATM/ATR pathway while ...

Corcho Alvarado, J. A., R. Purtschert, J. Rüedi, H. H. Loosli, C. Chabault, F. Barbecot, L. Dever, W. Aeschbach-Hertig, R. Kipfer, 2003. Origin and temporal evolution of the groundwater in the Fontainebleau Sands Aquifer (France) investigated using 3H, 85Kr, 39Ar, 14C and stable noble gases. International Symposium on Isotope Hydrology and Integrated Water Resources Management, IAEA, Vienna, IAEA-CN-104/92: 105-106. ...

Brenda Rocha Renato de Moraes 1964-; Andreas Möller; Cauê Rodrigues Cioffi; Michael Jercinovic; South American Symposium on Isotope Geology (10. 2016 Puerto Vallarta, Mexico ...

An important additional and evolving use of radioisotopes is in the treatment of disease.. There is a fundamental belief that cancer, leukemia, heart disease, Parkinsons disease, and more can be treated-and possibly cured-through the use of molecules that seek and attach radioisotopes to tumors and cancerous growths. Through this process, radioactivity can be delivered directly to the cells that require treatment, with minimal damage to nearby tissue.. NorthStar is well-positioned to meet the challenges ahead.. ...

We discussed previously the impact of high costs for preclinical systems on the global drug development research market. We saw that there is opportunity to

Knowledge about cycling of N is the basis for management decisions in order to maintain crop productivity, reduce dependency on N fertilizers, and reduce the negative impact of agriculture on the environment. Research was conducted in the field during three growing seasons using 15N isotope dilution techniques to study the intensity of N cycling in an alfalfa (Medicago sativa L.)-meadow bromegrass (Bromus riparius Rhem.) mixture managed as a hay crop. In addition, two greenhouse experiments were conducted to compare short-term and long-term N transfer from bromegrass to alfalfa and vice versa. Nitrogen removed by hay harvest amounted to 171 and 32 kg ha$\sp{-1}\ yr\sp{-1}$ for alfalfa and bromegrass, respectively. The average accumulation of N in stubble + roots to 30 cm depth was 115 kg ha-1 for alfalfa and 73 kg ha-1 for bromegrass. Alfalfa derived 210 kg N ha$\sp{-1}\ yr\sp{-1}$ from the atmosphere. At least 31% of this fixed-N was accumulated in stubble + roots. Most of the N (59 to 74%) of ...

Die Depression ist eine Erkrankung, die mit gedrückter Stimmung, Freud- und Interesselosigkeit sowie Antriebsarmut einhergeht. ↑ Edward C. Suarez: Relations of Trait Depression and Anxiety to Low Lipid and Lipoprotein Concentrations in Healthy Young Adult Women. ↑ Thomas S. Wingo, David J. Cutler, Aliza P. Wingo, Ngoc-Anh Le, Gil D. Rabinovici: Association of Early-Onset Alzheimer Disease With Elevated Low-Density Lipoprotein Cholesterol Levels and Rare Genetic Coding Variants of APOB. ↑ C. S. Briche, D. Carter, K. S. Webb: Comparison of gas chromatography and liquid chromatography mass spectrometric measurements for high accuracy analysis of cholesterol in human serum by isotope dilution mass spectrometry. In wissenschaftlichen Untersuchungen der letzten 20-30 Jahre hat man festgestellt, dass die arteriosklerotischen Plaques überwiegend aus chemisch modifiziertem (oxidiertem) LDL-Cholesterin entstehen (siehe den Abschnitt Die Lipoprotein-induced-atherosclerosis-Hypothese im Artikel ...

It is possible that oxidatively damaged DNA which arises as a result of radiotherapy may be involved in the therapeutic effect of the ionizing radiation and in the side effects. Therefore, for the first time, the broad spectrum of oxidatively damaged DNA biomarkers: urinary excretion of 8-oxodG (8-oxo-7,8-dihydro-2-deoxyguanosine), 8-oxoGua (8-oxo-7,8-dihydroguanine) as well as the level of oxidatively damaged DNA in leukocytes, was analyzed in head and neck cancer patients (n = 27) undergoing fractionated radiotherapy using methodologies which involve HPLC (high-performance liquid chromatography) prepurification followed by gas chromatography with isotope dilution mass spectrometry detection and HPLC/EC. Of all the analyzed parameters in the majority of patients, only urinary excretion of the modified nucleoside significantly increased over the initial level in the samples collected 24 hr after the last fraction. However, for the distinct subpopulation of 10 patients, a significant increase in ...

A double indicator dilution technique for determining the mean cross-sectional area (CSA) of a blood vessel in vivo is presented. Analogous to the thermodilution method, dilution of hypertonic saline was measured by an electrical conductance technique. Because the change in conductance rather than absolute conductance was used to calculate CSA, pulsatile changes in shear rate of blood and conductance of surrounding tissues had no effect on the data. To calculate CSA from an ion mass balance, cardiac output was needed and estimated from the thermodilution curve using the same cold (hypertonic) saline injection. The mean CSA, obtained from this double indicator dilution method (CSA(GD)), was compared with the CSA obtained from the intravascular ultrasound method (IVUS) in 44 paired observations in six piglets. The regression line is close to the line of identity (CSA(GD) = -1.83 + 1.06 · CSA(IVUS), r = 0.96). The difference between both CSAs was independent of the diameter of the vessel, on ...

Aridity and seasonality of precipitation are characteristics of the highland region in Bolivia. Groundwater becomes an important and safe source of water when surficial bodies are intermittent and affected by natural and anthropogenic contamination. Decades of exploitation of the Challapampa aquifer, combined with lack of information required to understand the groundwater circulation, represent a challenge for reservoir management. This study analyzes isotopic compositions of deuterium and oxygen-18 in different stages in the hydrologic cycle to assess flow patterns in the aquifer, especially in the alluvial fan of River Paria, where records are more extensive in space and time. Interpretations are based on existing and new data. Some implications, such as the age of water, the evaporation effect in groundwater and some thermal intrusions are supported by stable isotopes, tritium, radiocarbon, and electrical conductivity records. New results confirm that modern precipitation over the mountains

In most current designs of D-T fusion reactor blankets employing ceramic breeder materials, the use of a helium sweep gas containing 0.1 % of hydrogen is contemplated to extract tritium efficiently via isotopic exchange reactions. However, the isotope exchange reaction proceeds fast only at the more elevated temperatures, so that the rate of isotope exchange reactions is considerably low at lower temperatures. Taking into consideration that there is a broad temperature distribution within a blanket module, it is anticipated that the tritium bred in regions of lower temperatures will be poorly recovered. For this reason, there is still a need to develop techniques that contribute to the acceleration of the recovery of bred tritium at lower temperatures. In our previous works, the effect of catalytic active metal additives, such as Pt and Pd, on the heterogeneous isotope exchange reactions at the breeder-sweep gas interface was examined. The results indicate that the exchange reactions were ...

New strategies are needed to address the current and future shortages of radioisotopes that threaten medical research and treatment.

Keywords: Gross N biotransformation, soil microbial biomass, nitrogen availability, mineralisation, C:N ratios.. Summary:. Understanding the factors that govern microbial activities in soils is important, because the heterotrophic soil microbial biomass is driving the carbon (C) and nitrogen (N) cycling, and the net availability of N for plant uptake or losses. The processes by which C and N interact during decomposition of organic matter in soil, and the mineralisation-immobilisation turnover are well known but still difficult to predict, due to the complex interactions between soil micro-organisms and their substrates. The 15N isotope dilution techniques that allow rates of N transformations to be quantified accurately and simultaneously help the understanding of the effects of soil, crop and management conditions on microbial activities. The quantification of the relative importance of gross mineralisation, immobilisation and nitrification is also a key for understanding the competition ...

Keywords: Gross N biotransformation, soil microbial biomass, nitrogen availability, mineralisation, C:N ratios.. Summary:. Understanding the factors that govern microbial activities in soils is important, because the heterotrophic soil microbial biomass is driving the carbon (C) and nitrogen (N) cycling, and the net availability of N for plant uptake or losses. The processes by which C and N interact during decomposition of organic matter in soil, and the mineralisation-immobilisation turnover are well known but still difficult to predict, due to the complex interactions between soil micro-organisms and their substrates. The 15N isotope dilution techniques that allow rates of N transformations to be quantified accurately and simultaneously help the understanding of the effects of soil, crop and management conditions on microbial activities. The quantification of the relative importance of gross mineralisation, immobilisation and nitrification is also a key for understanding the competition ...

Iron is an essential element for the living organisms but free iron can be toxic. Iron metabolism disorders affect a large portion of human population. There exists a need for development of a reference technique to measure body iron stores. The ideal technique for determination of body iron stores would to measure ferritin concentration along with ferritin iron saturation. This study uses the principle of Isotope Dilution Mass Spectrometry (IDMS) to measure serum ferritin bound iron. IDMS requires the biosynthesis of a ferritin spike with isotopically enriched iron and sulphur. The aim of this project was to synthesize a ferritin spike for serum ferritin and ferritin bound iron quantification for development of a reference technique to determine body iron stores. This study involved the biosynthesis of a ferritin spike labelled with isotopic iron and sulphur ...

BioAssay record AID 772012 submitted by ChEMBL: Antifungal activity against Candida albicans NRRL Y-477 after 48 hrs by two-fold serial dilution technique.

A multi-point method of determining a time-zero blood volume by the tracer dilution technique. A tracer is injected into the blood stream of a living being, and a plurality of mixed samples of blood and tracer are removed from the blood stream at a corresponding plurality of measured time intervals subsequent to the injecting step. A blood portion volume corresponding to each time interval is automatically determined from the tracer level in the mixed samples, and a time-zero blood portion volume is automatically calculated from the determined blood portion volumes and time intervals.

FIELD OF SPECIALIZATION : Taxonomy of Angiosperms. SPECIAL INTEREST : Plant Anatomy, Medicinal & Ornamental Plants.. PRESENTLY WORKING ON FAMILY / TRIBE / GENUS OR FLORA OF (AREA): : Floristic Diversity of Wan Wildlife Sanctuary. PHONE : 020-29707072/020-29707078. E-MAIL : priyanka[at]bsi[dot]gov[dot]in,priyaingalkar[at]gmail[dot]com ON GOING OTHER PROJECTS: Flora of India vol. 24 (Families Urticaceae to Ceratophyllaceae). LIST OF PUBLICATIONS: A. Research articles/papers: 1. Priyanka Ingle. 2019. Pharmacognostic Investigations of Terminalia catappa L. Bioinfolet, 16(3): 168-175.. 2. Shantanu Chavan, R. Taur and P. Ingle. 2019. Note on distribution of Alysicarpus longifolius (Rottl. ex Spreng.) Wight & Arn. var. major Pokle in India. Plantae Scientia, 2(2): 29 - 31.. 3. Ughade, B. R., V.C. Khillare, D.M. Sangale, G. A. Korhale, P. Ingle, A.E. Tathe, R. Patil and G.D. Khedkar. 2018. A definitive method for distinguishing cultivated onion from its weedy mimic, Asphodelus fistulosus, at multiple ...

Gelatin Finings are used to clear beer before kegging or bottling. Gelatin is the most powerful organic fining agent available in brewing.. Note: Gelatin is not vegetarian. If you plan to serve your beer to vegetarian friends, do not use Gelatin finings!. Across the Internet on the various brewing forums there is a massive amount of conflicting opinion on the correct way to use gelatin finings. One of the main things that people get wrong, is they boil the gelatin before adding it to the beer. Boiling gelatin will render it useless; do NOT boil the gelatin finings before adding them to the beer! I hope to clear things up here with a definitive method to using gelatin finings to clear a 5 gallon batch of beer. This is a tried and tested method which I have used for many brews with great success.. ...

Learning Outcomes : At the end of this lesson, a student is able to : i. define radioisotopes ii. name examples of radioisotopes iii. describe applications of radioisotopes [ Click Radioisotopes to download powerpoint show]

The SNMMI Targeted Radioisotope Therapy (TRT) Working Group is very pleased to present their first webinar series on targeted radioisotope therapies for non-nuclear medicine physicians. This webinar series consists of 6 webinars, each focused on a specific disease area. Each webinar offers participants free CME.. ...

TO ANALYSE MATERIALS AND ARTICLES IN CONTACT WITH FOOD USING THE TECHNIQUE OF ISOTOPE DILUTION GC-MS AND TO ANALYSE THE FOOD IN CONTACT WITH THESE MATERIALS TO ASSESS THE MIGRATION OF BENZENE INTO FOOD ...

Use of radioisotopes in dating. To be able to distinguish the relative ages of rocks from such old material, and to get a better time resolution than that available from long-lived isotopes, short-lived isotopes that are no longer present in the rock can be used.