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Sample records for tonkom sloe veshchestva

  1. Influence of the Previous History of the Raw Material on Sintering of UO{sub 2}; Influence des antecedents de la matiere premiere sur le frittage de UO{sub 2}; Vliyanie obrabotki iskhodnogo veshchestva na spekanie UO{sub 2}; Influencia de la historia previa de la materia prima sobre la sinterizacion del UO{sub 2}

    Energy Technology Data Exchange (ETDEWEB)

    Aparicio, E.; Alonso, J. A.; Pedregal, J. D. [Junta de Energia Nuclear Madrid (Spain)

    1963-11-15

    medio de prefijar las caracteristicas granulometricas de la materia prima, sino la molienda y clasificacion de los polvos. Las uranias ensayadas en este trabajo son materiales convencionales representantes de tipos diferentes de fabricacion por el origen y metodo operatorio. Del estudio de las pastillas obtenidas se deducen las posibilidades y limitaciones de cada tipo de urania en el proceso adoptado. Se controlan las caracteristicas de superficie especifica, granulometria, analisis termico diferencial y termogravimetricoy estequiometria de los polvos, asi como la densidad, contraccion, estructura y estequiometria de las pastillas. (author) [Russian] Izlagayutsya ehksperimental'nye dannye, na kotorykh osnovan primenyaemyj odnim zavodom metod izgotovleniya tabletok UO{sub 2}. Soglasno ehtomu metodu granulometricheskaya kharakteristika iskhodnogo veshchestva opredelyaetsya zaranee ne putem upravlyaemogo osazhdeniya, a razmel'cheniem i sortirovkoj poroshka. V dannoj rabote ispol'zovalis' obraztsy obychnoj okisi urana, otlichayushchiesya po sposobu izgotovleniya i po proiskhozhdeniyu. Issledovanie privelo k nekotorym vyvodam otnositel'no vozmozhnostej i ogranichenij metoda v zavisimosti ot tipa ispol'zuemoj okisi urana. Privodyatsya rezul'taty izmereniya udel'noj poverkhnosti, granulometrii, termicheskikh differentsial'nogo i termogravimetricheskogo analizov i stekhiometrii poroshkov, a takzhe po plotnosti usadki, strukture i stekhiometrii tabletok. (author)

  2. Toward a Model of Expert Knowledge Structure and Their Role in Cognitive Task Performance

    Science.gov (United States)

    1993-11-01

    memory load. Grammars, specifically Task Action Grammar (TAG) (Payne and Green , 1986), and production rules (Newell and Simon, 1972) attempt to...Categorization, 259-303. Hillsdale, NJ: Earlbaum. Payne, S. J. and Green , T. R. G. (1986). Task-action grammars: a model of mental representation of task...PA 43235 lour,’Ar, IADr. Waich Creseas52242 Dr. Aliei Maimo Mail Sloe 23941 Behavoral Techaclopy NASA Are.s Anrirob Cenvnr Vcrr. M. Mile

  3. Adsorption studies at ionized surface layers by means of hot atoms; Etude, a l'aide d'atomes excites, de l'adsorption dans des couches superficielles ionisees; Issledovanie pri pomoshchi goryachikh atomov adsorbtsii na ionizirovannykh poverkhnostnykh sloyakh; Estudios, con ayuda de atomos excitados, de la adsorcion en capas superficiales ionizadas

    Energy Technology Data Exchange (ETDEWEB)

    Avrahami, Menashe; Steiger, Naftali H [Department of Chemistry, Technion - Israel Institute of Technology, Haifa (Israel)

    1962-03-15

    adsorcion de las especies ionizadas, fue posible seguir las reacciones superficiales por las que los aniones organicos adsorbidos inicialmente pasan al estado no ionico. Los autores pudieron deducir la formacion de un jabon acido no ionizado en la superficie y llegar a conclusiones sobre la formacion de micelas en la masa de la solucion, en diversas condiciones experimentales. (author) [Russian] S pomoshch'yu goryachikh atomov mozhno neposredstvenno issledovat' yavleniya adsorbtsii ionov na poverkhnosti rastvorov aktivnykh veshchestv s ionizirovannoj poverkhnost'yu. K takim rastvoram dobavlyayutsya chrezvychajno malye kolichestva sootvetstvuyushchikh radioaktivnykh ionov ili ionov, mogushchikh podvergnut'sya na meste navedennym yadernym pre- obrazovaniyam: ehti iony zamenyayut obychnye sluzhashchie dlya otscheta iony, adsorbirovannye vmeste s pervichnymi organicheskimi ionami. Goryachie atomy s ehnergiej priblizitel'no ot 100 kehv i vplot' do neskol'kikh ehlektronvol't dayut v vode sloi tolshchinoj priblizitel'no ot 1000 angstremov i vplot' do odnomolekulyarnykh. EHto delaet ikh prigodnymi dlya izucheniya chuvstvitel'nogo poverkhnostnogo sloya. Goryachie atomy, vytalkivaemye s poverkhnosti, sobirayutsya i podvergayutsya otschetu. Sredi otdach, ispytyvayushchikh al'fa-raspad, okazalas' podkhodyashchej sistema Bi-212/Tl-208. Putem dal'nejshej razrabotki ehtogo metoda mogli byt' polucheny tsennye svedeniya otnositel'no uslovij adsorbtsii na poverkhnostnykh sloyakh sernokislogo natriya dodetsilovoj kisloty. Kinetika adsorbtsii byla izuchena nablyudeniem vo vremeni za aktivnost'yu sobrannoj otdachi, vyzvannoj adsorbtsiej ionov vismuta. Byli zamereny izotermy adsorbtsii ionov vismuta v funktsii ot massovoj kontsentratsii poverkhnostnogo aktivnogo veshchestva v razlichnykh usloviyakh ionnoj intensivnosti, a takzhe rN i aktivnost' Bi-212. Putem sopostavleniya ehtikh izoterm s izotermami, poluchennymi izmereniem poverkhnostnogo napryazheniya rastvorov i putem podscheta

  4. Effect of woodland patch size on rodent seed predation in a fragmented landscape

    Directory of Open Access Journals (Sweden)

    J. Loman

    2007-05-01

    Full Text Available Predation on large woody plant seeds; chestnuts, acorns and sloe kernels, was studied in deciduous forests of two size classes: small woodlots (<1 ha and large woods (at least 25 ha in southern Sweden. Seeds used for the study were artificially distributed on the forest ground and seed predation measured as seed removal. Predation rate was similar in both types of woods. However, rodent density was higher in small woodlots and a correction for differences in rodent density showed that predation rate per individual rodent was higher in the large woods. This suggests that the small woodlots (including the border zone and their adjacent fields have more rodent food per area unit. A small woodlot cannot be considered a representative sample of a large continuous forest, even if the habitats appear similar. There was a strong effect of rodent density on seed predation rate. This suggests that rodents are major seed predators in this habitat.

  5. High current vacuum arc ion source for heavy ion fusion

    International Nuclear Information System (INIS)

    Qi, N.; Schein, J.; Gensler, S.; Prasad, R.R.; Krishnan, M.; Brown, I.

    1999-01-01

    Heavy Ion fusion (HIF) is one of the approaches for the controlled thermonuclear power production. A source of heavy ions with charge states 1+ to 2+, in ∼0.5 A current beams with ∼20 micros pulse widths and ∼10 Hz repetition rates are required. Thermionic sources have been the workhorse for the HIF program to date, but suffer from sloe turn-on, heating problems for large areas, are limited to low (contact) ionization potential elements and offer relatively low ion fluxes with a charge state limited to 1+. Gas injection sources suffer from partial ionization and deleterious neutral gas effects. The above shortcomings of the thermionic ion sources can be overcome by a vacuum arc ion source. The vacuum arc ion source is a good candidate for HIF applications. It is capable of providing ions of various elements and different charge states, in short and long pulse bursts, with low emittance and high beam currents. Under a Phase-I STTR from DOE, the feasibility of the vacuum arc ion source for the HIF applications is investigated. An existing ion source at LBNL was modified to produce ∼0.5 A, ∼60 keV Gd (A∼158) ion beams. The experimental effort concentrated on beam noise reduction, pulse-to-pulse reproducibility and achieving low beam emittance at 0.5 A ion current level. Details of the source development will be reported

  6. Development and Application of UPLC-QTof/MS Method for the Differentiation between Tea Varieties

    International Nuclear Information System (INIS)

    Jandrić, Zora

    2016-01-01

    Tea (Camellia sinensis L.) is one of the most popularly consumed beverages worldwide. It has been used as a natural medicine for thousands of years, containing many compounds beneficial to health. The two most popular varieties are green (favoured in Asia) and black tea (favoured in the western countries). The different growing season, geographical regions, processing and fermentation methods create many varieties of tea, some of which have premium value compared to the others. The expansion of the consumer market, which has increased demand for “manufactured” food as well as transported “pure” food such as tea, has encouraged adulteration simply because of the prospects for increased profit. The adulteration of tea has become a common problem. Mixing exhausted tealeaves with leaves of some other plants (e.g. elder, hawthorn, sloe), addition of the dust of the tea leaves and sand, chemical enhancement of green tea (with Prussian blue and sulphate of lime or gypsum) and simply redried and resold tea-leaves, are some of the main examples of tea adulteration. To help address these issues, the Food and Environmental Protection Laboratory (FEPL) applied an untargeted metabolomics approach previously developed for some other commodities (e.g. honey, fruit juices) to investigate the possibility of distinguishing teas from different origins, and detecting varieties that had been adulterated.

  7. Rates and energetics of tyrosine ring flips in yeast iso-2-cytochrome c

    International Nuclear Information System (INIS)

    Nall, B.T.; Zuniga, E.H.

    1990-01-01

    Isotope-edited nuclear magnetic resonance spectroscopy is used to monitor ring flip motion of the five tyrosine side chains in the oxidized and reduced forms of yeast iso-2-cytochrome c. With specifically labeled protein purified from yeast grown on media containing [3,5- 13 C]tyrosine, isotope-edited one-dimensional proton spectra have been collected over a 5-55 degree C temperature range. The spectra allow selective observation of the 10 3,5 tyrosine ring proton resonances and, using a two-site exchange model, allow estimation of the temperature dependence of ring flip rates from motion-induced changes in proton line shapes. For the reduced protein, tyrosines II and IV are in fast exchange throughout the temperature range investigated, or lack resolvable differences in static chemical shifts for the 3,5 ring protons. Tyrosines I, III, and V are in sloe exchange at low temperatures and in fast exchange at high temperatures. Spectral simulations give flip rates for individual tyrosines in a range of one flip per second at low temperatures to thousands of flips per second at high temperatures. Eyring plots show that two of the tyrosines (I and III) have essentially the same activation parameters. Tentative sequence-specific assignments for the tyrosines in reduced iso-2 are suggested by comparison to horse cytochrome c. For oxidized iso-2, five resonances are observed at high temperatures, suggesting flip rates for all five tyrosines sufficient to average static chemical shift differences. At lower temperatures, there is evidence of intermediate and slow flipping for some of the rings

  8. Distribution and removal of transuranic elements and cerium deposited by the inhalation route; Distribution et elimination des transuraniens et du cerium deposes par l'intermediaire des voies respiratoires; Raspredelenie transuranovykh ehlementov i tseriya, otkladyvayushchikhsya v rezul'tate vdykhaniya i ikh udalenie; Distribucion y eliminacion de elementos transuranicos y de cerio depositados por inhalacion

    Energy Technology Data Exchange (ETDEWEB)

    Bair, W. J.; Tombropoulos, E. G.; Park, J. F. [Hanford Atomic Products Operation, General Electric Company, Richland, WA (United States)

    1963-02-15

    , parasimpatominmeticos, parasiinpatoliticos y antihistamfnicos. El agente de quelacion, acido dietilentriaminopentaacetico.administ'rado en forma de aerosol o por via intraperitoneal elimina rapidamente el {sup 144}Ce-{sup 144}Pr de los pulmones y del organismo por excrecion urinaria. Un mes despues de ser expuestos a la accion del {sup 144}CeO{sub 2}, las ratas y perros tratados retienen una cantidad de {sup 144}Ce-{sup 144}Pr inferior al 10% de la retenida por los animales no tratados. (author) [Russian] Raspredelenie v tkanyakh i vydelenie vdykhaemykh radioaktivnykh izotopov menyaetsya vmeste s khimicheskoj formoj i razmerom chastits aehrozolej. U sobak cherez tridtsat' dnej posle vdykhaniya 70% nitrata plutoniya bylo obnaruzheno v legkikh, 10% - v, pecheni i 15% - v kostyakh skeleta. Posle vdykhaniya aehrozolya P{sup 239} O{sub 2} s vyschityvaemym srednim diametrom chastits (VSD), ravnym 0,12 mikron, 71% ehtogo veshchestva v organizme bylo skontsentrirovano v legkikh, 3% - v bronkhial'nykh limfaticheskikh uzlakh, 4,4% - v myshtsakh, 1,3% - v kostyakh skeleta i 20% bylo ravnomerno raspredeleno v ostal'nykh tkanyakh. Posle vdykhaniya aehrozolya P{sup 239} O{sub 2} s VSD chastits v intervale 0,3 - 0,6 mikron v legkikh soderzhalos' 98% veshchestva, v bronkhial'nykh limfaticheskikh uzlakh - okolo 1% i v ostal'nykh tkanyakh - 1%. Ehti dannye i issledovaniya mochi i isprazhnenij ukazyvayut na otnositel'nuyu vazhnost' trekh putej, po kotorym vdykhaemye radioaktivnye izotopy vyvodilis' iz legkikh, a imenno cherez trakheyu v rezul'tate dvizheniya resnichen s posledueshchem vydeleniem s isprazhneniyami, cherez al'veolyarnuyu membranu i pereraspredelenie v drugikh lgkanyakh s postepennym vydeleniem s mochoj i, nakonets, putem peremeshcheniya v bronkhial'nye limfaticheskie uzly, kotorye nakoplyayut vdykhaemye nerastvorimye veshchestva. Byli oprobovany terapevticheskie sredstva, kotorye, kak mozhno bylo ozhidat', povyshayut ochishchenie legkikh ot radioaktivnykh izotopov takimi putyami, pri

  9. New apparatus for discriminating shapes - application to the study of neutron-proton elastic scattering at 14.6 MeV; Nouveau dispositif de discrimination de formes - Application a l'etude de la diffusion elastique neutron-proton a 14,6 MeV; Novyj diskriminator po forme - primenenie k izucheniyu uprugogo rasseyaniya nejtronproton s 14,6 MeV; Nuevo dispositivo para discriminacion de formas - Aplicacion al estudio de la dispersion elastica neutron-proton a 14,6 MeV

    Energy Technology Data Exchange (ETDEWEB)

    Crettez, J P; Cambou, F; Ambrosino, G [Laboratoire Maurice de Broglie, Paris (France)

    1962-04-15

    'na izmerennomu takim obrazom vremeni. V rabote sravnivayutsya formy stsintillyatsij, proizvedennykh al'fa-chastitsami, protonami i ehlektronami. Dalee izlagayutsya poluchennye rezul'taty. Avtory opisyvayut primenenie ehtogo metoda k izmereniyu protonov otdachi, privodimykh v dvizhenie potokom nejtronov v tonkom vodorodnom diffuzore. Gashenie impul'sov, vyzyvaemykh gamma-luchami, pozvolyaet vyvesti iz poluchennykh spektrov kolebanie differentsial'nogo ehffektivnogo secheniya uprugogo rasseyaniya v zavisimosti ot ugla dlya nejtronov reaktsii d-t. (author)

  10. Vertical and Horizontal Mixing Rates of Radioactive Material in the Ocean; Taux de Melange Vertical et Horizontal des Matieres Radioactives Contenues dans l'Ocean; 0421 041a 041e 0420 041e 0421 0422 0414 ; Velocidades de Mezcla Vertical y Horizontal de Sustancias Radiactivas en las Aguas del Oceano

    Energy Technology Data Exchange (ETDEWEB)

    Miyake, Y.; Saruhashi, K. [Geochemical Laboratory, Meteorological Research Institute, Tokyo (Japan)

    1960-07-01

    la capa mezclada situada por encima de la termoclina (Miyake, Sugiura y Kameda, 1954). Ahora bien, en marzo de 1955 la radiactividad se extendio hasta unos 600 metros por debajo de la superficie, encontrandose la termoclina a una profundidad de 75 m. (Operation Troll, Comision de Energia Atomica de los Estados Unidos, 1956). De esta forma se tiene que si en el agua del mar hay un transporte biologico de sustancias radiactivas en direccion vertical, la migracion del plancton pudiera tener mas influencia en el transporte de las sustancias radiactivas que la descomposicion de los restos organicos, aunque dicho transporte represente solamente de un 10 a un 20 por ciento de la velocidad de mezcla fisica. Cuando las sustancias radiactivas se difunden partiendo de un punto, el coeficiente de difusion turbulenta horizontal puede determinarse partiendo de la variacion de la distribucion de la actividad en funcion del tiempo. (author) [Russian] Nabljudenija za raspredeleniem radioaktivnosti po vertikal'noj ploskosti v Tihom okeane pokazali, chto v ijune 1954 goda (Mijake, Sigiura i Kameda, 1954 g.) prisutstvie radioaktivnosti v osnovnom nabljudalos' tol'ko v smeshannom sloe vyshe sloja perepada temperatur. Odnako v marte 1955 goda aktivnost' rasprostranilas' pochti na 600 metrov nizhe poverhnosti vody v to vremja, kak perepad temperatur nahodilsja na glubine 75 metrov (operacija Troll, KAJe SShA, 1956 g.). Takim obrazom, esli imeetsja kakoe-libo biologicheskoe peremeshhenie radioaktivnogo materiala v vertikal'nom napravlenii v morskoj vode, migracija planktona mozhet byt' bolee jeffektivnoj, chem narushenie soderzhanija ostatkov organicheskih veshhestv pri peremeshhenii radioaktivnogo materiala, hotja ono i sostavit tol'ko 10-12 procentov skorosti fizicheskogo smeshivanija. Kogda radioaktivnyj material v rezul'tate diffuzii vydeljaetsja iz tochechnogo istochnika, to kojefficient gorizontal'noj vihrevoj diffuzii mozhno poluchit' iz vremeni izmenenija raspredelenija aktivnosti

  11. Preparation of Films and Sources for 4{pi} Counting; Prigotovlenie dlya 4{pi}-scheta plenok i istochnikov

    Energy Technology Data Exchange (ETDEWEB)

    Konstantinov, A. A.; Sazonova, T. E. [Vsesojuznyj Nauchno - Isledovatel' skij Institut Im. D.I. Mendeleeva, Leningrad, SSSR (Russian Federation)

    1967-03-15

    } ) , metallizirovannye s obeih storon zolotom (10 - 15 mkg/sm{sup 2}) ili palladiem (5 - 6 mkg/sm2 ) . Dlja umen'shenija popravki na pogloshhenie 8-chastic v sloe radioaktivnogo osadka primenjaetsja special'naja obrabotka podlozhki insulinom. Predlozhen ochen' chuvstvitel'nyj i jeffektivnyj metod dlja opredelenija ravno- mernosti nanesenija aktivnogo osadka po vsej obrabotannoj insulinom ploshhadi istoch- nika s ispol'zovaniem jelektronno-zahvatnogo nuklida marganec-54 (hrom-54). Na plenku, obrabotannuju insulinom, nanosilsja rastvor soli marganec-54 (hrom-54); poluchennyj istochnik K-jelektronov Ozhe hrom-54 (marganec-54) issledovalsja v proporcional'nom 4l- schetchike. Obshhee chislo K-jelektronov Ozhe hrom-54 (marganec-54), kotorye vyhodili iz istochnika, bylo men'she na 8-12% znachenija, rasschitannogo na osnovanii chisla KH-kvantov hroma-54 (marganec-54), ispuskaemyh istochnikom, kojef- ficienta fluorescencii i chisla K-jelektronov, pogloshhennyh v plenke, kotoroe oprede- ljalos' metodom {sup s}jendvicha{sup .} Ishodja iz raznostej mezhdu raschetnym i zaregistriro- vannym chislo'm jelektronov Ozhe dlja istochnikov marganec-54 (hrom-54), obrabotannyh in- sulinom i neobrabotannyh, mozhno odnoznachno sudit' o kachestve obrabotki insulinom istochnikov. (author)

  12. Production of C{sup 14}-labelled compounds from C{sup 14}O{sub 2} accelerated in an electric field - Physico-chemical analysis of some radioactive compounds obtained; Production de composes marques au {sup 14}C a partir de {sup 14}CO{sub 2} accelere dans un champ electrique - Analyse physico-chimique de quelques composes radioactifs obtenus; Proizvodstvo mechennykh uglerodom-14 soedinenij iz C{sup 14}O{sub 2}, uskorennogo v ehlektricheskom pole - Fiziko-khimicheskij analiz neskol'kikh poluchennykh radioaktivnykh soedinenij; Obtencion de compuestos marcados con {sup 14}C a partir de {sup 14}CO{sub 2} acelerado en un campo electrico - Analisis fisicoquimico de algunos de los compuestos radiactivos obtenidos

    Energy Technology Data Exchange (ETDEWEB)

    Guillaume, M [Universite de Liege, Belgique (Belgium)

    1962-03-15

    con cadenas alifaticas (50 {mu}c/g para el acido glutarico) o con moleculas ciclicas que presenten una cadena alifatica (acido acetilsalicilico). (author) [Russian] V dannoj rabote izlagaetsya metod mecheniya, osnovannyj na uskorenii ehlektricheskim polem C{sup 14}O{sub 2}, kotoryj v ehto vremya poddaetsya vstupleniyu v reaktsiyu s organicheskoj mishen'yu, nakhodyashchejsya na ego traektorii. Opysyvaemaya razryadnaya kamera dejstvuet pod napryazheniem 500 v, 150 mka, a podlezhashchie mecheniyu organicheskie veshchestva vvodyatsya v ehto pole i nakhodyatsya tam okolo 3 chasov vmeste s CO{sub 2} udel'noj aktivnosti v 24 mkyuri/mmol'. Maksimal'nyj vykhod poluchennykh produktov ostaetsya slabym (okolo 6%), a 60% C{sup 14}O{sub 2} - razrusheno. EHtot maksimal'nyj vykhod poluchaetsya tol'ko dlya alifaticheskikh tsepej (50 mkkyuri/r dlya glutarovoj kisloty) ili dlya aromaticheskikh veshchestv, predstavlyayushchikh alifaticheskuyu tsep' (atsetilgalitsilovuyu kislotu). (author)

  13. Radioisotopes as tracers for reactions in molten fluoride media; Les radioisotopes comme indicateurs des reactions se produisant dans des milieux de fluorures fondus; Ispol'zovanie radioizotopov v kachestve indikatorov dlya reaktsij v rasplavlennoj ftoristoj srede; Los radioisotopos como indicadores de las reacciones que tienen lugar en un medio de fluoruros fundidos

    Energy Technology Data Exchange (ETDEWEB)

    Grimes, W R; Shaffer, J H; Strehlow, R A; Ward, W T; Watson, G M [Oak Ridge National Laboratory, Oak Ridge, TN (United States)

    1962-03-15

    produce un aumento de la concentracion de radioisotopos en la solucion, de conformidad con la ley de accion de masas. Cuando se enfrian ciertas mezclas de LiF y BeF{sub 2} fundidas que contengan CeF{sub 3} y fluoruros de las tierras raras, la fase primaria consiste en una solucion solida de los trifluoruros. Los autores han evaluado los equilibrios entre la solucion fundida y la solucion solida, para diversos pares de fluoruros. No han observado ninguna desviacion notable respecto de la ley de accion de masas. Los autores logran la separacion de diversas especies por precipitacion selectiva de los oxidos a partir de soluciones de fluoruros fundidos. (author) [Russian] Putem ispol'zovaniya sootvetstvuyushchikh radioizotopov i standartnykh metodov otscheta byli izucheny khimicheskie reaktsii, kotorye mogut okazat'sya poleznymi dlya udaleniya nekotorykh sostavnykh chastej iz rasplavlennykh ftoristykh rastvorov. Byli izucheny sleduyushchie kategorii reaktsij: 1) izotopnyj obmen mezhdu rastvorennym indikatorom i nerastvorimymi slozhnymi veshchestvami; 2) raspredelenie rastvorennogo indikatora mezhdu rasplavom i rastvorom analogichnogo slozhnogo veshchestva v tverdom sostoyanii i 3) osazhdenie radioizotopa v kachestve nerastvorimogo slozhnogo veshchestva. V tipichnykh ehksperimentakh nablyudalos', chto radioaktivnyj indikator LaF{sub 3} v rasplavakh LiF-NaF bystro obmenivaetsya na neaktivnyj La{sub 2}O{sub 3}. V ehtom rastvoritele analogichnyj bystryj obmen proiskhodit mezhdu radioaktivnym indikatorom CeF{sub 3} i neaktivnym CeO{sub 2}; trebuemoe v poslednem sluchae perenesenie ehlektrona ochevidno ne prepyatstvuet ehtoj reaktsii. V sootvetstvii s printsipom massovogo dejstviya dobavlenie k kazhdoj iz ehtikh sistem neaktivnogo CeF{sub 3} uvelichivalo soderzhanie radioaktivnogo indikatora v rastvore. Pri okhlazhdenii nekotorykh rasplavov ZiF-BeF{sub 2}, soderzhashchikh CeF{sub 3}, i redkikh zemel' v kachestve pervichnoj fazy obrazuetsya tverdyj rastvor triftoristykh soedinenij

  14. Oceanographic Research Required in Support of Radioactive Waste Disposal; Recherches Oceanographiques Necessaires pour l'Elimination des Dechets Radioactifs; 041e 041a 0415 0410 041d 041e 0413 0420 0414 ; Investigaciones Oceanograficas Necesarias para la Evacuacion de Desechos Radiactivos

    Energy Technology Data Exchange (ETDEWEB)

    Ketchum, Bostwick H. [Woods Hole Oceanographic Institution, Woods Hole, MA (United States)

    1960-07-01

    verticalmente, dentro de la columna de agua (por migracion e intercambio). Para cada problema concreto de evacuacion de desechos sera necesario estudiar la fauna y flora local, asi como el consiguiente monitoraje de la operacion. (author) [Russian] Dlja udalenija othodov s nizkim urovnem aktivnosti v pribrezhnye vody opredeljajushhim faktorom urovnja zarazhenija budet sluzhit' harakter zhivotnogo i rastitel'nogo mira i sredstva pitanija mestnogo naselenija. Pri takom polozhenii veshhej sleduet udelit' vnimanie osadochnomu zhivotnomu miru, poskol'ku on budet podvergat'sja oblucheniju nepreryvno, togda kak planktony i ryba budut lish' proplyvat' ili zahodit' v zony sporadichnogo zarazhenija. S drugoj storony, v otkrytom okeane planktony igrajut pervostepennoe znachenie, kak s tochki zrenija togo, chto oni javljajutsja morskoj raznovidnost'ju pishhevogo produkta, tak i s tochki zrenija togo, chto oni javljajutsja nositeljami izotopov. S podobnymi voprosami stalkivajutsja biologi, izuchajushhie libo mir neperedvigajushhihsja zhivyh organizmov, libo mir planktonov. Zdes' neobhodimo znat' rasselenie i plotnost' razlichnyh raznovidnostej jetih organizmov; skorost' rosta otdel'nyh organizmov i ih semejstv v celom; vremja ih razmnozhenija i izobilija; sposobnost' razlichnyh organizmov akkumulirovat' v sebe razlichnye jelementy, a takzhe puti, po kotorym jeti jelementy perenosjatsja pishhevoj tkan'ju na dno posredstvom osazhdenija ili vertikal'no v vodjanom sloe posredstvom migracii i obmena. Dlja kazhdoj specificheskoj problemy po udaleniju othodov trebuetsja issledovanie mestnogo haraktera zhivotnogo i rastitel'nogo mira, a takzhe posledujushhego kontrolja samoj operacii po udaleniju othodov. (author)

  15. Mass dependence of intermetallic diffusion; Influence de la masse sur la diffusion intermetallique; Zavisimost' massy intermetallicheskoj diffuzii; Influencia de la masa sobre la difusion entre metales

    Energy Technology Data Exchange (ETDEWEB)

    Lazarus, D [Department of Physics, University of Illinois, Urbana, IL (United States)

    1962-01-15

    disolvente. El autor analiza tambien la influencia ejercida por la temperatura sobre ese efecto. (author) [Russian] Byli provedeny ehksperimenty dlya opredeleniya spetsificheskogo ehffekta izotopnykh mass na stepen' intermetallicheskoj diffuzii dlya togo, chtoby proverit' primenenie teorii ob{sup e}ma absolyutnoj reaktsii k protsessu diffuzii, a takzhe vychisleniya Bardina i KHerringa v otnoshenii korrelyatsii mezhdu izotopnym indikatorom i atomnymi perekhodami v rastvoritele. Primenyayutsya metody tochnykh sechenij s ispol'zovaniem izotopnykh indikatorov zheleza-55 i zheleza-59 v chistykh serebryanykh i mednykh odnokristallicheskikh obraztsakh. Dlya izmereniya nebol'shoj zavisimosti massy pri provedenii opyta trebuetsya bol'shaya tochnost'. Poskol'ku oba izotopa zheleza imeyut sovershenno razlichnye skhemy raspada, to tochnoe differentsirovannoe izmerenie aktivnosti mozhet byt' osushchestvleno s pomoshch'yu poglotitelej iz zolota i berilliya posle radiokhimicheskogo otdeleniya izotopnykh indikatorov ot osnovnogo materiala. Rezul'taty pokazyvayut, chto otnositel'naya skorost' diffuzii dvukh dannykh izotopov yavlyaetsya znachitel'no men'shej po sravneniyu s obychno ozhidaemoj skorost'yu blagodarya ili smeshcheniyu ot svoego polozheniya ravnovesiya vo vremya perekhodov v ehlementarnoj diffuzii ili sil'noj korrelyatsii mezhdu atomnymi perekhodami rastvoryaemogo veshchestva i rastvoritelya. Takzhe rassmatrivaetsya zavisimost' ehffekta ot temperatury. (author)

  16. Use of radioisotopes in studying the penetration of sulphur into iron during hydrogen cathode charging; Application des radioelements a l'etude de la penetration du soufre dans le fer lors du chargement en hydrogene cathodique; Ispol'zovanie radioehlementov dlya izucheniya proniknoveniya sery v zhelezo, kogda ona zaryazhaetsya katodnym vodorodom; Aplicacion de los radioelementos al estudio de la penetracion del azufre en el hierro durante la carga con hidrogeno catodico

    Energy Technology Data Exchange (ETDEWEB)

    Besnard, S; Talbot, J [Centre National de la Recherche Scientifique, Vitry (France)

    1962-01-15

    soufre aux joints des grains. Ce resultat, qui ne pouvait etre obtenu qu'avec l'aide des radiotraceurs, a des consequences importantes notamment dans l'industrie des petroles. Une etude analogue a ete faite en utilisant le radioisotope 32 du phosphore. (author) [Spanish] Determinados elementos, como por ejemplo el arsenico, se emplean corrientemente en el laboratorio para fomentar la penetracion del hidrogeno en el hierro. Por otra parte, se ha comprobado en la industria que la presencia de acido sulfhidrico intensifica la corrosion de los aceros por el hidrogeno. Cabia preguntarse si estas sustancias, que hasta ahora se consideraban como catalizadores, solo fomentan la absorcion del hidrogeno, o si ejercen una influencia directa sobre el metal. Los autores han estudiado este fenomeno en su laboratorio con ayuda de hierro electrolitico puro. Han efectuado la sobresaturacion con hidrogeno por carga catodica. Como sustancia de adicion emplearon sulfuro de sodio marcado con azufre-35. Lograron demostrar que en media hora a la temperatura de -15 Degree-Sign C, el azufre penetra en el hierro hasta una profundidad de unas 120 {mu}m. Han podido comprobar ademas que el azufre se localiza preferentemente en los limites intergranulares. Este resultado, que solo pudo obtenerse gracias a los indicadores radiactivos, tiene importantes consecuencias, en especial para la industria del petroleo. Los autores han realizado un estudio analogo utilizando el radioisotopo 32 del fosforo. (author) [Russian] Nekotorye ehlementy, kak naprimer mysh'yak, obychno ispol'zovalis' v laboratorii dlya oblegcheniya proniknoveniya vodoroda v zhelezo. V promyshlennosti bylo ustanovleno, chto korroziya stalej, vyzvannaya prisutstviem vodoroda, usilivaetsya pri nalichii sernistogo vodoroda. Voznikal vopros, dopuskali li ehti veshchestva, rassmatrivaemye do sikh por v kachestve katalizatorov, tol'ko samuyu bol'shuyu absorbtsiyu ili okazyvali neposredstvennoe vozdejstvie na metall. Izuchenie ehtogo yavleniya

  17. Establishment of the Processes of Absorption and Diffusion of Systemic Insecticides in Populus Euramericana Dode Guinier ''Robusta''; L'etablissement des processus d'absorption et diffusion des insecticides systemiques au Populus x Euramericana Dode Guinier ''Robista; Opredelenie protsessov pogloshcheniya i diffuzii somaticheskikh insektitsidov u Populus x Euramerican a Dode Guinier ''Robusta''; Determinacion de los procesos de absorcion y difusion de los insecticidas sistemicos en el Populus x Euramericana Dope Guinier ''Robusta''

    Energy Technology Data Exchange (ETDEWEB)

    Catrina, I.; Popa, A.; Constantinesco, V.; Constantinesco, O.; Constantinesco, El.; Hulula, C. [Institut de Recherches Forestieres de Bucarest, Bucharest (Romania)

    1963-09-15

    kontsevykh chastyakh rastenij. V obshchem,pri dannom opyte nakoplenie insektitsida sostavilo 1,65 mg/g zelenogo veshchestva po sravneniyu s 0,24 mg/g ehtogo zhe veshchestva u rastenij, vyrashchennykh v laboratornykh usloviyakh. Iz ehtogo sleduet,chto na pochve dvukhletnie topoli Robusta mogut v sukhoe vremya goda nakaplivat' ''Dipterex'', kotoryj byl vveden v vodnom rastvore v otnoshenii 9,3% k kolichestvu, vnesennomu v zemlyu. Pri provedenii opytov v laboratornykh usloviyakh ehto otnoshenie sostavlyalo 1,35%. Nanesenie rastvorov na listvu putem razbryzgivaniya daet slabyj koehffitsient pogloshcheniya in sektitsida, chto ob{sup y}asnyaetsya takzhe trudnym protsessom pogloshcheniya u list'ev i smyvaniem insektitsida dozhdevoj vodoj, rosoj i tumanom. Na zemle obnaruzheno bol'shoe kolichestvo insektitsida. V svyazi s ehtim my schitaem, chto metodu vneseniya rastvorov somaticheskikh insektitsidov v pochvu dolzhno byt' otdano predpochtenie v bor'be s vreditelyami drevesnykh porod. (author)

  18. Improved Oxidation Resistance of Zirconium Resulting from Addition of Small Amounts of Copper; Amelioration de la Resistance a l'Oxydation du Zirconium par de Faibles Additions de Cuivre; Povyshenie soprotivlyaemosti k okisleniyu tsirkoniya posle dobavlenij nebol'shikh kolichestv medi; Aumento de la Resistencia del Circonio a la Oxidacion por Agregado de Pequenas Cantidades de Cobre

    Energy Technology Data Exchange (ETDEWEB)

    Loriers, H.; Darras, R.; Baque, P. [Centre d' Etudes Nucleaires de Saclay (France)

    1966-02-15

    chastnosti splav s 2,5% medi, vidimo, predstavljajut interes v kachestve materialov dlja pokrytija ili konstrukcionnyh materialov dlja toplivnyh jelementov reaktorov tipa tjazhe- laja voda - uglekislyj gaz. Korrozija cirkonija, vyzyvaemaja uglekislym gazom, svoditsja po sushhestvu k okisleniju, v techenie kotorogo voznikajut dva processa: 1) sozdanie monoklinicheskogo cirkonievogo sloja, cherez kotoryj kislorod rasseivaetsja putem migracii anionnyh ''dyrok''; 2) rastvorenie i diffuzija kisloroda, kotoryj protekaet putem ego vvedenija v metall. Sochetanie gravimetricheskih dannyh i izmerenij plotnostej sloev okisi pozvoljaet opredelit' dva sootvetstvujushhih kojefficienta diffuzii. Jetot raschet po analogii raspro- stranjaetsja na sluchaj s dvojnymi, medno-cirkonievymi splavami pri koncentracii medi nizhe ili ravnoj 4 ves%. Sravnenie poluchennyh rezul'tatov pokazyvaet, chto kojefficient diffu- zii kisloroda v obrazovavshemsja sloe okisi umen'shaetsja s uvelicheniem kolichestva medi v rassmatrivaemom splave; s drugoj storony, sootvetstvujushhij kojefficient diffuzii kislo- roda v splave, esli on neskol'ko izmenen pri 600 Degree-Sign S, umen'shaetsja pri 700 Degree-Sign S s uvelicheniem kolichestva medi do 2,5%. Povyshenie soprotivljaemosti k okisleniju, svjazannoe s zamedle- niem processov diffuzii, dostigaetsja, v chastnosti, v rezul'tate prodolzhitel'nogo sohrane- nija kinetiki parabolicheskogo tipa, v to vremja kak v sluchae s nesoedinennym cirkoniem ili s drugimi splavami rastreskivanie sloja okisi v rezul'tate otslaivanija bystro privodit k linejnoj kinetike okislenija. (author)

  19. The Application of Non-Metallic Core Materials in a High-Temperature Reactor Experiment; Utilisation de materes non metalliques dans le coeur d'un reacteur experimental a haute temperature; Ispol'zovanie nemetallicheskikh materialov dlya aktivnoj zony vysokotemperaturnogo opytnogo reaktora; Empleo de materiales no metalicos en el nucleo de un reactor experimental de alta temperatura

    Energy Technology Data Exchange (ETDEWEB)

    Huddle, R. A.U.; Shepherd, L. R. [Organization for Economic Co-Operation and Development, Dragon Project, Atomic Energy Establishment, Winfrith, Dorset (United Kingdom)

    1963-11-15

    comportamiento de estos materiales en condiciones de funcionamiento normales. Se comunican los resultados de las investigaciones sobre irradiacion, asi como de los trabajos efectuados en los circuitos del reactor. El objetivo principal de este programa es el perfeccionamiento de los reactores de elevada temperatura refrigerados por gas para aplicarlos a la generacion de electricidad en condiciones rentables. (author) [Russian] Proekt vysokotemperaturnogo reaktora (DRAGON)sozdan dlya razrabotki tekhnologii vysokotemperaturnykh reaktorov s gazovym okhladitelem; v nem predusmatrivalos' sooruzhenie i ehkspluatatsiya opytnogo reaktora na 20 mgvt (tepl.). Reaktor, sooruzhenie kotorogo budet vskore zakoncheno, predstavlyaet soboj sistemu, okhlazhdaemuyu geliem; temperatura na vykhode iz aktivnoj zony budet dostigat' 750{sup o}C. V nem budet ispol'zovat'sya U-235 v kachestve goryuchego i torij v kachestve vosproizvodyashchego materiala. Kharakternoj osobennost'yu sistemy yavlyaetsya otsutstvie kakogo-libo metalla v aktivnoj zone. Vvidu togo, chto v reaktore dolzhny razvivat'sya ves'ma vysokie temperatury,' a imenno, 1050{sup o}C na poverkhnosti teplovydelyayushchego ehlementa i do 1500{sup o}C v naibolee sil'no nagrevaemykh tochkakh topliva, dlya ego sooruzheniya ispol'zovany ogneupornye nemetallicheskie materialy. Vse veshchestvo aktivnoj zony sosredotocheno v teplovydelyayushchem ehlemente, blagodarya chemu sootnoshenie mezhdu poverkhnost'yu teploperedachi i ob{sup e}mom aktivnoj zony dostigaet bol'shogo znacheniya, i, sledovatel'no, pozvolyaet dostigat' vysokoj srednej plotnosti ehnergii v sravnitel'no kompaktnoj sisteme. Kazhdyj teplovydelyayushchij ehlement sostoit ieh gruppy grafitovykh trubok, zapolnennykh grafitovymi tabletkami, soderzhashchimi rasshcheplyayushcheesya i vosproizvodyashchee veshchestva v vide karbidov. Gelievyj okhladitel' prokhodit po osi. kazhdogo teplovydelyayushchego sterzhnya i vyvoditsya u ego osnovaniya, okhladitel' zatem napravlyaetsya v ochistitel

  20. Catalytic Activity and Nuclear Radiation; L'activite catalytique et les rayonnements nucleaires; Kataliticheskaya aktivnost' i yadernoe izluchenie; La actividad catalitica y las radiaciones nucleares

    Energy Technology Data Exchange (ETDEWEB)

    Turkevich, J.; Ikawa, T.; Nozaki, F.; Stamires, D. [Princeton University, N.J (United States)

    1963-11-15

    , soderzhavshikh razlichnoe kolichestvo dekationirovannykh tsentrov ot nulya do sta protsen- tov, schitaya na iskhodnoe soderzhanie natriya. Kataliticheskuyu aktivnost' ehtikh dvukh tipov katalizatorov opredelyali do i posle gamma-oblucheniya, issleduya kinetiku razlozheniya kumola v benzole i propilene, provodya izomerizatsiyu dvojnykh svyazej butena-1 v buten-2 i provodya reaktsii obmena mekhdu vodorodom i dejteriem. Chislo aktivnykh tsentrov opredelyali po vozrastavshemu otravleniyu, primenyaya khinolin, i takim obrazom kharakterizovali aktivnost', prikhodyashchuyusya na tsentr. Veshchestva izucheny takzhe putem izmereniya ehlektronno-spinovogo rezonansa adsorbirovannykh ehlektronno-perenosyashchikh agentov, kak, naprimer, trifenilamin, perilen i simmetrichnyj difenilehtilen. Bylo najdeno, chto sposobnost' k perenosu ehlektronov sootvetstvuet kataliticheskoj aktivnosti. Dlya vyyasneniya prirody aktivnykh tsentrov ispol'zovali protonnyj rezonans adsorbirovannoj vody. (author)

  1. Effects of Radiation on Germ Cells of Insects: Dominant Lethals, Gamete Inactivation and Gonial-Cell Killing; Effets des rayonnements sur les cellules germinales des insectes: letalite dominante, inactivation des gametes et destruction des cellules des gonades; Vozdejstvie radiatsii na polovye kletki nasekomykh: dominantnye letali, inaktivatsiya gamet i umershchvlenie polovykh kletok; Efectos de las radiaciones sobre las celulas germinales de los insectos: elementos letales dominantes, inactivacion de los gametos y exterminacion de las celulas gonadicas

    Energy Technology Data Exchange (ETDEWEB)

    Von Borstel, R. C. [Biology Division, Oak Ridge National Laboratory, Oak Ridge, TN (United States)

    1963-09-15

    esterilizacion que alcanzan su maxima eficacia solo en las especies que copulan una vez. Para que la lucha contra los insectos sea eficaz hay que aplicar dosis que produzcan un factor letal dominante maximo, una inactivacion minima de la esperma y una exterminacion completa de las celulas gonadicas. Estos parametros se pueden determinar facilmente con la medicion de la viabilidad de los gametos, los experimentos con poblaciones irradiadas y no irradiadas y el examen histologico de las gonias. (author) [Russian] Izlucheniya i khimicheskie mutagennye veshchestva umershchvlyayut kletki razlichnymi putyami:odnim iz vidov obrazovaniya dominantnykh letalej, neposredstvennoj inaktivatsiej funktsii, kak, naprimer, v otnoshenii spermy, i geneticheski neopredelimymi vidami smerti, kotorye mogut byt' svyazany ili ne svyazany s dominantnoj letal'nost'yu. Khimicheskie mutageny proizvodyat, po-vidimomu, neobychajnoe usilenie oplodotvoryaptsej sposobnosti spermy. Razlichnye stadii oogeneza i spermatogeneza reagiruyut s neodinakovoj chuvstvitel'nost'yu na obluchenie, i raznitsa v chuvstvitel'nosti otdel'nykh kletok na nekotorykh stadiyakh razvitiya dostigaet 50 raz. Razlichnye stadii oogeneza i spermatogeneza reagiruyut s neodinakovoj chuvstvitel'nost'yu na obluchenie, i raznitsa v chuvstvitel'nosti otdel'nykh kletok na nekotorykh stadiyakh razvitiya dostigaet 50 raz. Tam, gde predstavlyaetsya vozmozhnym sravnivat' dvukrylykh, pereponchatokrylykh i zhestkokrylykh nasekomykh, mozhno nablyudat' zamechatel'noe edinoobrazie reaktsii ka obluchenie kak po urovnyu radiochuvstvitel'nosti na opredelennoj stadii, tak i po zavisimosti stepeni reaktsii ot dozy. Shelkopryad, Bombyx mori (otryad cheshuekrylykh), predstavlyaetsya pokhozhim v bol'shinstve otnoshenij na predstavitelej drugikh otryadov po reaktsii polovykh kletok na radiatsiyu, no rezko otlichaetsya po tipam indutsirovannykh dominantnykh letalej. Vidy s atipichnym geneticheskim mekhanizmom (naprimer, lekanoidnaya sistema Planococcus citri

  2. Some recent developments in the application of radioisotope techniques in Australia; Progres recents dans l'application des methodes radioisotopiques en Australie; Poslednie dostizheniya v oblasti primeneniya radioizotopov v Avstralii; Recientes progresos realizados en Australia en las aplicaciones tecnicas de los radioisotopos

    Energy Technology Data Exchange (ETDEWEB)

    Gregory, J N [Australian Atomic Energy Commission Research Establishment, Sutherland, N.S.W. (Australia)

    1962-01-15

    pomoshch'yu kalibrovannykh podvodnykh stsintillyatsionnykh schetchikov. EHti ehksperimenty pokazali takzhe, chto na potoki bolee drugikh faktorov vliyaet veter. Pri otsutstvii vetra zametnaya chast' teploj vody peresekaet poverkhnost' bassejna i vnov' popadaet na ehlektrostantsiyu v techenie 3-4 chasov. EHto ukazalo na konstruktsionnyj defekt v skheme pogloshcheniya, kotoraya byla zatem usovershenstvovana. Daetsya takzhe opisanie issledovaniya skhemy potokov v bassejne Bakha dlya rastvorov sakhara-syrtsa. Goryachij rastvor syrtsa posle obrabotki izvest'yu vvoditsya cherez edinstvennyj podayushchij truboprovod v verkhnej chasti, a ochishchennyj rastvor vykhodit cherez trubo- provody na shesti razlichnykh urovnyakh. Tverdye veshchestva berutsya so dna. V podayushchij kanal bylo vvedeno okolo 5 millikyuri broma-82 v rastvore, i poyavlenie mechenykh atomov bylo izmereno kolichestvenno ehkranirovannymi stsintillyatsionnymi detektorami v kazhdoj iz shesti vyvodnykh trub. Analiz raspredeleniya aktivnosti po vremeni v kazhdom truboprovode yasno ukazal na kharakter potoka v bassejne. Nakonets, opisyvayutsya rezul'taty izucheniya voprosa o koehffitsiente poleznogo dejstviya protsessa smeshivaniya v smeshivayushchem apparate spiral'nogo tipa. (author)

  3. Measurement of resonance parameters of cross-sections affecting fast-neutron propagation in various media; Mesure des parametres de resonance de sections efficaces lies a la propagation des neutrons dans differents milieux; Izmerenie parametrov rezonansnoj struktury sechenij, vliyayushchikh na rasprostranenie bystrykh nejtronov v sredakh; Medicion de los parametros de resonancia de las secciones eficaces que afectan a la propagacion de los neutrones rapidos en distintos medios

    Energy Technology Data Exchange (ETDEWEB)

    Nikolaev, M N; Filippov, V V; Bondarenko, I I [Academy of Sciences, Moscow, Union of Soviet Socialist Republics (Russian Federation)

    1962-03-15

    , prostiraetsya vplot' do neskol'kikh desyatkov kehv dlya tyazhelykh yader i do neskol'kikh Mehv dlya yader srednego vesa. Dlya ucheta rezonansnykh ehffektov pri vychislenii gruppovykh parametrov neobkhodimo znat' ne tol'ko srednie secheniya vzaimodejstviya nejtronov s veshchestvami, no i takie velichiny, kak (1/{Sigma}{sub t}), (1/{Sigma}{sub t}{sup 2}) i drugie - skobki oznachayut usrednenie po ehnergeticheskoj gruppe. Imeyushchiesya v nastoyashchee vremya svedeniya o rezonansnykh parametrakh v oblasti bystrykh nejtronov nedostatochny dlya togo, chtoby ukazannye velichiny mogli byt' vychisleny s neobkhodimoj tochnost'yu. V svyazi s ehtim predstavlyaet interes neposredstvenno e izmerenie velichin (1/{Sigma}{sub t}), (1/{Sigma}{sub t}{sup 2}) i drugikh analogichnykh kharakteristik. V doklade privodyatsya rezul'taty izmerenij ryada parametrov takikh kak ({Sigma}{sub t}), ({Sigma}{sub t}{sup 2}), (1/{Sigma}{sub t}), (1/{Sigma}{sub t}{sup 2}), (1/{Sigma}{sub t}{sup 3}) i drugie, kharakterizuyushchi kh strukturu sechenij ryada yader srednego vesa v oblasti ot 300 kehv do 3 Mehv. Ukazannye velichiny byli polucheny putem analiza krivykh propuskaniya, snyatykh v khoroshej geometrii vplot' do propuskanij {approx}10{sup -2}. Poluchennye dannye ukazyvayut na sil'noe vliyanie rezonansnykh ehffektov na diffuzionnye kharakteristiki veshchestva. (author)

  4. Movement of Radioactive Effluents in Natural Waters at Hanford; Le Mouvement des Effluents Radioactifs dans les Eaux Naturelles a Hanford; 0414 0412 0418 0416 0414 ; Movimiento de los Efluentes Radiactivos en Aguas Naturales en Hanford

    Energy Technology Data Exchange (ETDEWEB)

    Honstead, J. F.; Foster, R. F.; Bierschenk, W. H. [Hanford Laboratories Operation, Hanford Atomic Products Operation, General Electric Company, Richland, WA (United States)

    1960-07-01

    . La velocidad y direccion de desplazamiento dependen de la forma de la superficie del manto y de las caracteristicas hidraulicas de las capas acuiferas portadoras. La forma del manto freatico ha sufrido una profunda modificacion debido a la evacuacion de grandes cantidades de agua. Basandose en la pendiente de las capas acuiferas y en las mediciones de su permeabilidad, se ha calculado que el desplazamiento dura por termino medio 180 anos. Se admite que la velocidad maxima puede ser varias veces superior a la media senalada. Sin embargo, el efecto de la adsorcion o de otras reacciones es disminuir considerablemente la velocidad de desplazamiento de las sustancias radiactivas, en relacion con la velocidad de las aguas. No hay indicios de que los productos de fision se esten desplazando desde los lugares de evacuacion hacia el rio. (author) [Russian] Hjenfordskij zavod raspolozhen v poluzasushlivom rajone na ochen' tolstom sloe netverdyh, soderzhashhih vodu otlozhenij, na korennoj bazal'tovoj porode. Takim obrazom mozhno rassmatrivat' dve geologicheskih porody, iz kotoryh nizhnjaja znachitel'no menee pronicaema. Reka Kolumbija protekaet cherez territoriju zavoda, i ee voda ispol'zuetsja dlja potreblenija tol'ko v 55 km vniz po techeniju ot poslednej ustanovki. Nizkoaktivnye zhidkie othody iz reaktorov slivajutsja v reku Kolumbiju posle 1-3 chasov vyderzhki v special'nyh bassejnah-otstojnikah. V takih othodah obnaruzheno bolee 60 radioizotopov, prichem pochti vse iz nih imejut ochen' korotkij period poluraspada. Rassmatrivajutsja voprosy obednenija, ne vkljuchaja obychnyj raspad, razlichnyh radioizotopov v rechnoj vode pomimo obychnogo raspada. Na rasstojanii 55 km mezhdu reaktorami i Pasko takoe obednenie v srednem sostavljaet 40% i ob{sup j}asnjaetsja processami biologicheskogo pogloshhenija i osazhdenija. Nizkoaktivnye rastvory zhidkih othodov s himicheskih zavodov po obrabotke topliva udaljajutsja v zemlju; oni dolzhny prosochit'sja cherez 70-120 metrov osadochnyh

  5. Renal Scintiscanning with Hg{sup 209}-Neohydrin in Urologic Diseases; Scintigraphy du Rein dans les Maladies des Voies Urin Aires au Moyen de Neohydrine Marquee avec {sup 203}Hg; Stsintillyatsionnoe skennirovanie pochek s pomoshch'yu neogidrina,mechennogo Rtut'yu-203, pri urologicheskikh zabolevaniyakh; Exploracion Centelleografica del Rinon con Neohydrina - {sup 203}hg en las Afecciones Urologicas

    Energy Technology Data Exchange (ETDEWEB)

    Bollini, V.; Tori, G. [Radiology Institute of the University of Bologna (Italy)

    1964-10-15

    determinar una disminucion de la funcion renal y a diferenciar los casos unilaterales de los bilaterales. Asi, la centelleografia del rinon constituye al parecer una tecnica clinica de gran utilidad, especialmente si se combina con el examen radiologico por medios tradicionales (urogtafia, pielografia ascendente, retroneumoperitoneo, tomografia, aorto- grafia, etc.). (author) [Russian] Dlja scintilljacionnogo skenirovanija pochek ispol'zovalsja neogidrin, mechennyj rtut'ju-203. Byl primenen jaderncj Chikagskij izotopnyj skenner tipa 1700 s kristallom 5 h 5 sm i kollimator ''Hanikoum'' s fokusnym rasstojaniem 7 sm. Obychno scintigrammy registrirujutsja odnovremenno na bumage i na fotoplenke. Neogidrin, mechennyj rtut'ju-203, primenjaetsja obychno v dozah 120 - 160 mkkjuri (okolo 2 mkkjuri/kg). Skennirovanie nachinajut spustja 2 chasa posle in{sup e}kcii i prodolzhajut 40 - 50 minut. Selektivnoe skoplenie mechenogo neogidrina v korkovom sloe pochek daet vozmozhnost' poluchit' graficheskoe izobrazhenie obeih pochek i opredelit' ih polozhenie, orientaciju i formu, a takzhe gomogennost' aktivno funkcionirujushhej parenhimy. V nekotoryh sluchajah byli provedeny avtoradiograficheskie issledovanija porazhennyh pochek posle hirurgicheskogo udalenija. S pomoshh'ju takogo metoda mozhno diagnoscirovat' kak vrozhdennye, tak i priobretennye anomalii polozhenija i orientacii. Chto kasaetsja formy, to granicy pochek mozhno opredelit' tem tochnee, chem luchshe funkcioniruet pochka. Takie tehnicheskie aspekty, kak shirina kristalla, tip kollimatora (fokal'naja ploskost' kotorogo dolzhna prohodit' cherez srednjuju poperechnuju ploskost' pochek) i doza, kotoraja ne dolzhna byt' slishkom vysokoj ili slishkom maloj, sostavljajut sushhestvennoe uslovie dlja pravil'nogo graficheskogo vosproizvedenija ochertanij pochek. Narushenie dejatel'nosti kanal'cev v parenhime opredeljaetsja blagodarja narusheniju pogloshhenija radioaktivnosti. Polozhenie, razmery i forma takih defektov pogloshhenija

  6. Radio-tracer techniques in the study of corrosion by molten fluorides; Etude, a l'aide d'indicateurs radioactifs, de la corrosion provoquee par les fluorures fondus; Primenenie metodov radioaktivnykh indikatorov nrn izuchenii korrozii, prichinyaemoj rasplavlennymi ftoristymi soedineniyami; Estudio con indicadores radiactivos de la corrosion ocasionada por fluoruros fundidos

    Energy Technology Data Exchange (ETDEWEB)

    Grimes, W R; Watson, G M; DeVan, J H; Evans, R B [Oak Ridge National Laboratory, Oak Ridge, TN (United States)

    1962-03-15

    segundo se utilizo para hacer circular una mezcla fundida quo contenia FeF{sub 2} y medir la eliminacion del cromo de la aleacion. Los resultados obtenidos concuerdan satisfactoriamente con los que se calculan con ayuda de los coeficientes de difusion determinados experimentalmente; esta concordancia indica que el coeficiente de autodifusion del Cr no es afectado por las variaciones de la concentracion de cromo en la aleacion Inor-8. (author) [Russian] Kogda ''inkonel'' ili ''inor-8'' podvergayutsya dejstviyu rasplavlennykh ftoristykh smesej, soderzhashchikh vosstanavlivayushchie veshchestva, khrom izbiratel'no okislyaetsya i udalyaetsya iz splava. S pomoshch'yu radioaktivnogo indikatora Cr{sup 51} byli ustanovleny koehffitsienty samodiffuzii khroma v ''inkonsle'' i ''inore-8'', a takzhe byla izuchena primenimost' znachenij ehtikh koehffitsientov k splavam v korrozijnykh usloviyakh. Summarnye koehffitsienty byli polucheny putem sleduyushchikh zamerov: 1) obedneniya v Cr{sup 51} (zagruzhennogo v vide CrF{sub 2}) nekorrozijnykh ftoristykh rasplavov v legirovannykh kapsulakh i 2) sootnosheniya mezhdu izmerimoj obshchej radioaktivnost'yu obrabotannykh sol'yu obraztsov splava i radioaktivnost'yu soli, dejstviyu kotoroj obraztsy byli podvergnuty. Pomimo ehtogo, koehffitsienty byli polucheny putem zamera grafika kontsentratsii indikatora pri posledovatel'noj ehlektropolirovke obraztsov. Summarnye koehffitsienty, a takzhe koehffitsienty, poluchennye opytami ehlektropolirovki, ochen' blizko sovpadayut dlya ''inkonelya'' pri vysokikh temperaturakh i dlya ''inora-8'' pri vsekh temperaturakh. Dlya temperatur nizhe 750{sup o} C koehffitsienty, poluchetshe pri pomoshchi ehlektropolirovki obraztsov ''sinkonelya'' prevyshayut znacheniya summarnykh koehffitsientov; v ehtom sluchae protsess diffuzii v masse ne odnoobrazen. Vo vsekh sluchayakh nablyudalos' khoroshee sovladenie mezhdu summarnymi koehffitsientami diffuzii i koehffitsientami, poluchennymi putem ehkstrapolyatsii dannykh

  7. Some factors influencing the absorption, retention and elimination of ruthenium; Facteurs agissant sur l'absorption, la retention et l'elimination du ruthenium; Nekotorye faktory, vliyakshchie na vsasyvanie, zaderzhku i vydelenie ruteniya; Factores que influyen sobre la absorcion, retencion y eliminacion de rutenio

    Energy Technology Data Exchange (ETDEWEB)

    Bruce, R. S. [Radiobiological Research Council, Medical Research Council, Harwell (United Kingdom)

    1963-02-15

    syvorotki. Zaderzhka ruteniya v drugikh tkanyakh takzhe mozhet opredelyat'sya skorost'yu katabolizma belkov. Poskol'ku pri reaktsii ruteniya s belkami obrazuyutsya ustojchivye kompleksy, trudno najti kakoelibo aek and rgtgennoe lechenie dlya snizheniya zaderzhki. Kompleksoobrazukhntsie veshchestva EDTA, DTRA i TTJA ne vliyayut na raspredelenie ili vydelenie ruteniya, vvedennogo krysam vnutrivenno. (author)