Academic literature on the topic 'Chlorure de baryum'

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Journal articles on the topic "Chlorure de baryum"

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Kruyt, H. R., and A. E. van Arkel. "La Vitesse de Floculation du sol de Sélénium.: Deuxième Communication. Floculation au Moyen de Chlorure de Baryum." Recueil des Travaux Chimiques des Pays-Bas 40, no. 3 (2010): 169–91. http://dx.doi.org/10.1002/recl.19210400305.

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Vasudevan, Subramanyan, and Swaminathan Mohan. "Electrochemical Preparation of Barium Chlorate from Barium Chloride." Industrial & Engineering Chemistry Research 45, no. 9 (2006): 2923–28. http://dx.doi.org/10.1021/ie051018r.

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Spiridonov, E. M. "Barium minerals – baritе and chlorinedominant ferrokinoshitalite bafe2+3[cl2/al2si2o10] in plagioperidotites Yoko-Dovyren intrusion (Northern Baikal region) – products of epigenetic low grad metamorphism". Геохимия 64, № 11 (2019): 1196–205. http://dx.doi.org/10.31857/s0016-752564111196-1205.

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In the plagioperidotite of the ultamafite-mafic Yoko-Dovyren intrusion captured by low-grad metamorphism (NGM) under conditions of the prenite-pumpelliite facies (PPF), mobilization of Ba, Cl and Sr is observed The content of barium in plagioperidotite ranges from 36 to 313 (an average of 130 g / t); strontium from 25 to 169 (an average of 86 g / t); Ba / Sr value varies from 0.5 to 4 (on average 1.5). Barium minerals phlogopite and plagioclase; chlorine chloroferrisadanagite from inclusions in alumochromite, late-magmatic phlogopite, potassium chlorate ferropargassite and chlorapatite in the
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Krishnan, V., T. V. Krishna Moorthy, and J. Ramakrishna. "Pressure Dependence of Chlorine NQR in Strontium Chlorate and Barium Chlorate Monohydrate." Zeitschrift für Naturforschung A 41, no. 1-2 (1986): 338–40. http://dx.doi.org/10.1515/zna-1986-1-263.

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The pressure dependence of the 35Cl-NQR frequencies in barium chlorate monohydrate and strontium chlorate, has been investigated up to 7000 kg cm-2. Ba(ClO3)2 · H2O shows a single 35Cl-NQR line at 29.337 MHz (T = 297 K, p = 1 bar). ν(35Cl) increases linearly with pressure in the range studied, with (1/ν )(∂ν/∂p)T = + 0.409 x 10-6 kg-1 cm2 which is much smaller than observed in NaClO3 and KCIO3. Sr(ClO3)2 also gave a single 35Cl-NQR frequency at 20.105 MHz (T = 297 K, p = 1 bar). The pressure dependence is very small and negative in this case. The data in both cases have been analysed to obtain
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Tarasova, Nataliia, Irina Animitsa, and Anzhelika Galisheva. "Synthesis, Structure and Transport Properties of Novel Chlorine-Doped Perovskite Based on Ba2CaNbO5.5." Materials Science Forum 917 (March 2018): 88–92. http://dx.doi.org/10.4028/www.scientific.net/msf.917.88.

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The chlorine-doped complex oxide Ba2CaNbO5.475Cl0.05based on barium calcium niobate was synthesized using the solid state method. It was found that the introduction of chloride ions leads to the increase of the cell volume. Structure and electrical properties have been investigated. Electrical conductivities were measured by varying the temperature in dry (pH2O=3.5·10-5atm) and wet (pH2O=2·10-2atm) air. The composition Ba2CaNbO5.475Cl0.05is capable to dissociative dissolution of water vapor and can exhibit proton transport. Chlorine doping increases the conductivity of matrix compound Ba2CaNbO
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Taweetanawanit, Pongsatorn, Thana Radpukdee, Nguyen Thanh Giao, and Sumana Siripattanakul-Ratpukdi. "Mechanical and Chemical Stabilities of Barium Alginate Gel: Influence of Chemical Concentrations." Key Engineering Materials 718 (November 2016): 62–66. http://dx.doi.org/10.4028/www.scientific.net/kem.718.62.

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There has been increasing interest of alginate gel utilization for environmental application. This study was aimed to investigate influence of sodium alginate and barium chloride concentrations on mechanical and chemical stabilities of the barium alginate gel. The barium alginate beads were mechanically tested using universal testing machine while the beads were soaked in the solutions with pHs of 5 to 9 or salts (sodium chloride, potassium chloride, and sodium hydrogen carbonate) for chemical stability test. The result showed that concentrations of barium chloride and sodium alginate obviousl
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Ellison, D. H., H. Velazquez, and F. S. Wright. "Stimulation of distal potassium secretion by low lumen chloride in the presence of barium." American Journal of Physiology-Renal Physiology 248, no. 5 (1985): F638—F649. http://dx.doi.org/10.1152/ajprenal.1985.248.5.f638.

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Potassium secretion into the renal distal tubule is increased when chloride in the tubule fluid is replaced by another anion. The present experiments were done to determine whether this increment in transported potassium traverses a conductive pathway from cell to lumen. Transport rates of potassium, sodium, chloride, and fluid by the renal distal tubule of rats were examined in vivo by continuous microperfusion. The effects of substituting gluconate for chloride in the presence and absence of 5 mM barium in the perfusion fluid were determined. When gluconate replaced chloride in the perfusion
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Yang, Bei, Xiang Zhang, Xin Ge Shi, et al. "Study in Kinetics of Barium Sulfate Crystallization Process of Oilfield Injection." Advanced Materials Research 962-965 (June 2014): 757–61. http://dx.doi.org/10.4028/www.scientific.net/amr.962-965.757.

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With conductivity measurement in different concentrations of barium chloride, sodium sulfate, sodium chloride solution, their concentration-conductivity equation is obtained. Through mathematical conversion, the relation between sulfuric acid root ion in the solution, barium ion conductivity and the concentration is showed as: X=4.1744×10-6Y-6.8544×10-5,which is used to reflect the undissolved salt barium sulfate crystallization in the solution. Conductivity online measuring device is established, which can Intermittently test barium chloride, sodium sulfate solution of different concentration
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Nikolaeva, Elena V., Irina D. Zakiryanova, Andrey L. Bovet, and Iraida V. Korzun. "On Barium Oxide Solubility in Barium-Containing Chloride Melts." Zeitschrift für Naturforschung A 71, no. 8 (2016): 731–34. http://dx.doi.org/10.1515/zna-2016-0163.

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AbstractOxide solubility in chloride melts depends on temperature and composition of molten solvent. The solubility of barium oxide in the solvents with barium chloride content is essentially higher than that in molten alkali chlorides. Spectral data demonstrate the existence of oxychloride ionic groupings in such melts. This work presents the results of the BaO solubility in two molten BaCl2–NaCl systems with different barium chloride content. The received data together with earlier published results revealed the main regularities of BaO solubility in molten BaO–BaCl2–MCl systems.
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Liang, Jinhui, Baozhen Yang, Chu-Yao Zhong, et al. "A rapid in situ synthesis of wide-spectrum CD@BaCl2 phosphors via anti-solvent recrystallization for white LEDs." Inorganic Chemistry Frontiers 7, no. 24 (2020): 4845–53. http://dx.doi.org/10.1039/d0qi01054e.

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A facile and rapid in situ recrystallization strategy that can anchor carbon dots in an inorganic barium chloride solid medium is applied to produce wide-spectrum hybrid CD@barium chloride phosphors that show good photoluminescence for WLED aplications.
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Dissertations / Theses on the topic "Chlorure de baryum"

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Rerhrhaye, Amal. "Contribution à l'étude de divers couples frigorigènes : Application à la réfrigération solaire photothermique." Nancy 1, 1986. http://www.theses.fr/1986NAN10093.

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Détermination du profil annuel de l'irradiation globale dans plusieurs sites de climat aride, en vue de la production de froid. Étude des propriétés physico-chimiques de trois couples frigorigènes : CACL::(2)-NH::(3), BACL::(2)-NH::(3), MGCL::(2)-NH::(3). Détermination du couple le plus adapté à la production de froid dans les zones tropicales. Présentation des résultats expérimentaux du fonctionnement d'un réfrigérateur solaire photothermique de capacité de 380 L installé à Madagascar
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Boumaraf, Latra. "Etude des réactions chimiques dans les ammoniacates solides : application du système BaCl2/NH3 à la réfrigération solaire." Grenoble INPG, 1989. http://www.theses.fr/1989INPG0026.

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Conception d'un dispositif experimental dans le but d'etudier les proprietes physiques et cinetiques des systemes bacl::(2)/nh::(3) et cacl::(2)/nh::(3). Mesures de vitesses de desorption et d'absorption. Modele d'optimisation des processus et experimentation d'un prototype de refrigeration a capteur solaire plan
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ELYAMANI, ABDESSAMAD. "Synthese de nouveaux verres de chlorofluorozirconates : etude de leurs proprietes physiques et optiques." Rennes 1, 1989. http://www.theses.fr/1989REN10053.

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Exploration systematique de l'incorporation de chlore dans les verres de fluorozirconate. Etude comparative des systemes binaires zrf::(4)-bafcl et zrf::(4)-srfcl avec les systemes fluores correspondants zrf::(4)-mf::(2) ou m=li, na, k, rb, g. Determination de la zone de formation vitreuse dans les systemes ternaires zr::(4)-baf::(2)-mcl et zrf::(4)-srf::(2)-mcl stabilises par l'adjonction d'autres fluorures tels que laf::(3) et thf::(4). Etude des parametres cinetiques de la devitrification en utilisant les methodes isothermes et non isothermes. Mise en evidence d'une nucleation notable a bas
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AYADI, MOHAMED. "Contribution a l'etude de la dynamique de reseau de quelques composes de la serie de la mathlockite (pbfcl)." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13183.

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Etude de l'energie de cohesion de composes a structure de mathlockite; conditions de stabilite, expressions de la polarisation ionique, des constantes d'elasticite et des constantes dielectriques (modele de la coquille, presence de sites non centrosymetriques). Condition de synthese et de croissance cistalline de cahcl, bafcl, pbfcl et biocl; spectres raman et ir. Analyse des spectres de reflexion ir de bafcl (kramers-kronig et oscillateur classique). Determination de la densite d'etats et de la dispersion de phonons pour bafcl; calcul de certaines constantes d'elasticite
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Brunner, David R. "The Composition and Distribution of Coal-Ash Deposits Under Reducing and Oxidizing Conditions From a Suite of Eight Coals." BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/2642.

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Eighteen elements, including: carbon, oxygen, sodium, magnesium, aluminum, silicon, phosphorus, sulfur, chlorine, potassium, calcium, titanium, chromium, manganese, iron, nickel, strontium, and barium were measured using a scanning electron microscope with energy dispersive spectroscopy from deposits. The deposits were collected by burning eight different coals in a 160 kWth, staged, down-fired, swirl-stabilized combustor. Both up-stream and down-stream deposits from an oxidizing region (equivalence ratio 0.86) and reducing region (equivalence ratio 1.15) were collected. Within the deposits, t
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Books on the topic "Chlorure de baryum"

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Research, AECL. The sorption of strontium, barium and radium by chlorite and kaolinite: Effects of sorbent concentration and competition from groupe IIA elements. Geochemistry Research Branch, Whiteshell Laboratories, 1998.

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Book chapters on the topic "Chlorure de baryum"

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Mattila, M. J., K. Anyos, and E. L. Puisto. "Cardiotoxic Actions of Doxepin and Barium Chloride in Conscious Rabbits." In Archives of Toxicology. Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-642-71248-7_26.

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Tierney, Matthew T., and Alessandra Sacco. "Inducing and Evaluating Skeletal Muscle Injury by Notexin and Barium Chloride." In Methods in Molecular Biology. Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4939-3810-0_5.

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Emsley, John. "Other poisonous elements." In The Elements of Murder. Oxford University Press, 2005. http://dx.doi.org/10.1093/oso/9780192805997.003.0025.

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It is often said that the dose makes the poison, and indeed if the human body is stressed with an excess of anything it will respond in a way that may ultimately damage it to such an extent that it causes its own destruction. We can even take in too much oxygen or water. Too much oxygen damages the brain and has been known to kill premature babies and deep-sea divers, while too much water has killed those who were dying of thirst and suddenly gulped it down, disrupting the salt balance in their blood which then stopped the heart muscle. While these are extreme examples, there are other less obvious elements that can be dangerous in excess, which is what this chapter is mainly about. In it we will look at those elements that are only moderately toxic and consequently have rarely been used in criminal cases. They are, in alphabetical order: barium, beryllium, cadmium, chromium, copper, fluorine, nickel, potassium, selenium, sodium, tellurium, and tin. Of course there are other deadly elements: chlorine gas, for example, has been used to kill people in warfare – see Chapter 5 – it has never to my knowledge been used to commit a murder. (On the other hand, every day it saves countless human lives by chlorinating drinking water. Then it is guilty of killing nothing more than disease-causing microbes.) An element may be encountered as the pure substance, when it is rarely toxic, as its insoluble compounds, which again are unlikely to be toxic, even if taken, or as its soluble compounds, which may well cause symptoms. The importance of solubility is well demonstrated by the first of our metals: barium. Barium can stimulate metabolism to the extent that it will cause the heart to beat erratically (known as ventricular fibrillation), and its soluble salts are highly toxic. They paralyse the central nervous system at low doses and the heart at higher doses. The symptoms of barium poisoning are vomiting, colic, diarrhoea, tremors, and paralysis. Barium has occasionally killed patients who were given the wrong barium compound as the barium meal they swallowed prior to having an X-ray taken of their stomach or gut.
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Yanagisawa, A. "Barium Dihydroxytrioxoruthenate(VI) from Ruthenium(III) Chloride and Barium Nitrate." In Compounds of Groups 13 and 2 (Al, Ga, In, Tl, Be...Ba). Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-007-00715.

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Yanagisawa, A. "Barium Manganate from Potassium Permanganate or Potassium Manganate and Barium Chloride." In Compounds of Groups 13 and 2 (Al, Ga, In, Tl, Be...Ba). Georg Thieme Verlag KG, 2004. http://dx.doi.org/10.1055/sos-sd-007-00716.

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Seco, Josi M., Emilio Quiqoa, and Ricardo Riguera. "Practical Aspects of the Preparation of the Derivatives." In The Assignment of the Absolute Configuration by NMR using Chiral Derivatizing Agents. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780199996803.003.0005.

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Most of the NMR spectra shown in this book and in the literature have been recorded at 250 or 300 MHz, with a few being obtained at 500 MHz for 1H NMR (the equivalent for 13C NMR). No special pulse sequences are necessary, just standard one-dimensional (1D) spectra although two-dimensional (2D) experiments (e.g., correlation spectroscopy; COSY) may be necessary in some cases in order to get an unambiguous identification of the signals relevant for the assignment. In general, 5–10 mg or less of CDA derivative dissolved in 0.5 mL of deuterated solvent are sufficient to obtain a good NMR spectrum. Temperature, solvent, and concentration used in the NMR experiments should be adequate for each CDA-substrate pair and methodology, because the method is based on the conformational composition of the AMAA derivatives in precise conditions. With the exception of the low-temperature procedure (single derivatization), a NMR probe temperature around 300 K has always been used. In general, the spectra for double-derivatization assignments should be taken in deuterated chloroform. Different NMR solvents are required only in two of the single-derivatization methods. In the assignment by low-temperature NMR, the most convenient solvent is a CS2/CD2Cl2 (4:1) mixture, which allows the use of temperatures low enough (i.e., 213 K) to obtain relevant shifts. In the procedure based on the complexation with Ba2+, the NMR solvent should be deuterated acetonitrile. The barium salt is anhydrous Ba(ClO4)2, which can be added directly to the tube by using a spatula. No weighing is necessary after shaking, as the excess salt will remain at the bottom of the NMR tube and will not disturb the experiment. (R)- and (S)-MPA, MTPA, and Boc-phenylglycine (BPG) are commercially available and can be used without further purification. The first two (MPA and MTPA) can also be purchased as acid chlorides. When using MTPA or the corresponding acid chloride [85] for the derivatization of an alcohol or amine, it should be noted that the Cahn-Ingold-Prelog priority rules assign different R/S descriptors to the acid and to the corresponding chloride; this is due to the different priority order generated by the substituents [i.e., (R)-MTPA generates the (S)-acid chloride and vice versa].
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Dénès, Georges, and Abdualhafed Muntasar. "To Passivate or not to Passivate, that is the Question: The Case of Barium Tin(II) Chloride Fluorides." In Passivation of Metals and Semiconductors, and Properties of Thin Oxide Layers. Elsevier, 2006. http://dx.doi.org/10.1016/b978-044452224-5/50025-1.

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Emsley, John. "Testing your metal: An exhibition of the metals which our body must have." In Molecules at an Exhibition. Oxford University Press, 1998. http://dx.doi.org/10.1093/oso/9780198502661.003.0006.

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Ask people which metals are essential for healthy living and I suspect most would say zinc and iron. Some might mention sodium and potassium, although sodium is often regarded as something deleterious to healthy living; and a few people will know that calcium is a metal also, and important. In fact the human body needs fourteen metal elements to function properly. But for every metal that we do need, there is another that our body contains that we could well do without. These metals serve no known purpose, but they come with the food we eat, the water we drink, and the air we breathe and our body absorbs them, mistaking them for more useful elements. As a result we find that the average adult contains measurable amounts of aluminium, barium, cadmium, caesium, lead, silver and strontium. There are also trace amounts of many others, including gold and uranium. Because strontium so closely resembles calcium we absorb a lot of this element, and the average person has about 320 mg in their body, far more than of many of the essential elements. On the other hand the weight of gold in the average person is only 7 mg, worth but a few pence, and the weight of uranium is only 0.07 mg, although turned into pure energy this could drive your car for five kilometres. Our body tends to retain these unwanted intruders either in our skeleton, as in the case of uranium which has a special propensity to bind to phosphate, or in our liver which has proteins that can trap metals like gold. The table below lists the amounts of the essential 14 metals in the average adult—someone who weighs 70 kg (155 pounds). As we would expect, calcium heads the list because, along with phosphate, it is what makes up the bones of our skeleton, which weighs 9 kg on average. Of this, i kg is calcium and 2.5 kg is phosphate. In fact 99% of the body's calcium and 85% of its phosphate is in the skeleton. Bone also contains water and the protein collagen, plus the elements sodium, potassium, iron, copper and chlorine.
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Conference papers on the topic "Chlorure de baryum"

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Kumari, M. Meena, C. Ravikumar, M. Amalanathan, et al. "Growth and Vibrational Spectroscopic Investigations of NLO Crystal Barium Thiourea Chloride." In PERSPECTIVES IN VIBRATIONAL SPECTROSCOPY: Proceedings of the 2nd International Conference on Perspectives in Vibrational Spectroscopy (ICOPVS 2008). AIP, 2008. http://dx.doi.org/10.1063/1.3046181.

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Salihi, Abbas B. Q., Mudhir S. Shekha, Peshraw S. Hamadamin, et al. "In vivo cardiac electrical activity of nitric oxide in barium chloride treated male rats." In 6TH INTERNATIONAL CONFERENCE AND WORKSHOPS ON BASIC AND APPLIED SCIENCES. Author(s), 2017. http://dx.doi.org/10.1063/1.5004325.

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Ouhadi, V. R., and M. Deiranlou. "A proposed modification to barium chloride method for CEC measurement of calcareous clayey soils." In 2011 International Conference on Electrical and Control Engineering (ICECE). IEEE, 2011. http://dx.doi.org/10.1109/iceceng.2011.6058405.

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Komine, Hiroshi. "Efficient, Broadly Tunable Beta-Barium Borate Optical Parametric Oscillator Pumped by a Xenon Chloride Laser." In Advanced Solid State Lasers. OSA, 1989. http://dx.doi.org/10.1364/assl.1989.hh1.

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Francis, Elizabeth, J. Tippabattini, Eun-Sik Choi, Sabu Thomas, and Jaehwan Kim. "Morphology and dielectric properties of poly vinyl chloride-[multiwalled carbon nanotube-barium titanate] hybrid composite." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Vijay K. Varadan. SPIE, 2017. http://dx.doi.org/10.1117/12.2259850.

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Kastner, Johannes, Sara Fedier, Norbert Kockmann, and Peter Woias. "Reactive Precipitation in Microchannels: Impact of Convective Mixing on Particle Formation." In ASME 2007 5th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2007. http://dx.doi.org/10.1115/icnmm2007-30035.

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Reactive precipitation in micro- and minichannels currently draws attention of both, chemists and engineers in the field of micro process engineering. Due to intensified mixing and improved heat and mass transfer, fast chemical and thermodynamical processes involved in precipitation can be controlled readily in micro or mini structures. Particularly microchannels are a promising technology for particulate processes allowing continuous operation along with little or no backmixing. However, the sensitivity of microscale channels to blocking and fouling requires careful design and appropriate per
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Lu, Haiping, Chris Haugen, Tim Garza, Jeffrey Russek, Baker Hughes, and Chad Harbaugh. "Test Method Development and Scale Inhibitor Evaluations for High-Salinity Brines in the Williston Basin." In SPE International Oilfield Scale Conference and Exhibition. SPE, 2014. http://dx.doi.org/10.2118/spe-169805-ms.

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Abstract In the Rocky Mountain region of the United States, high-salinity brines (total dissolved solids > 250, 000 mg/L) present during oil and gas production cause severe scale problems in the Williston Basin. The scales include not only calcium carbonate, calcium sulfate, barium sulfate, strontium sulfate, but also sodium chloride (halite). This paper presents the development of test methods and their corresponding testing results for scale inhibitor evaluations in the laboratory and their applications in the field for high-salinity brines. It is well known that there is no effective
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Johnson, J. A., R. Weber, A. I. Kolesnikov, and S. Schweizer. "Glass Ceramics for High-Resolution Imaging." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-66205.

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Glass-ceramic materials are being developed for use in digital mammography systems. The materials are transparent x-ray storage phosphors, which are potentially less expensive than competing materials with superior performance. The materials do not suffer from loss of resolution and increased noise due to light scattering from grain boundaries, as do the currently available polycrystalline materials. The glass ceramics are based on Eu2+-doped fluorochlorozirconate glasses. These can be heat treated to nucleate Eu-doped barium chloride nanocrystals. The glass ceramic converts ionizing radiation
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Mohammad Reza Mohammad Shafiee, Mohamad Pauzi Zakaria, and Parviz Aberomand Azar. "Silica Supported Barium Chloride (SiO2-BaCl2): Efficient and Heterogeneous catalyst for the environmentally friendly preparation of N,N′-alkylidene bisamides under solvent-free condition." In 2010 2nd International Conference on Chemical, Biological and Environmental Engineering (ICBEE). IEEE, 2010. http://dx.doi.org/10.1109/icbee.2010.5650087.

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Vesely, Andreas. "Processes for the Treatment of NORM and TENORM." In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4623.

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By contract with the Austrian government, the ARC is treating radioactive waste from research institutions and industries. In the last years, one focus was the development of processes for the treatment of NORM and TENORM. Our goal in developing such processes is to recycle valuable compounds for further industrial usage and to concentrate the radioactive elements as far as possible, to save space in the waste storage facilities. Austria is an important producer of tungsten-thoria- and tungsten-molybdenum-thoria-cermets. Scrap is generated during the production process in the form of turnings
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Reports on the topic "Chlorure de baryum"

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Roetman, V. E. ,. Westinghouse Hanford. Estimates of power deposited via cesium/barium beta and gamma radiation captured in components of a Hanford cesium chloride capsule and by components of overpacked capsules placed in an interim dry storage facility. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/302015.

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