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Articoli di riviste sul tema "Barium"

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Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 14 marzo 2023

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1

Reissig, Falco, Klaus Kopka e Constantin Mamat. "Die Bedeutung des Elementes Barium in der Nuklearmedizin". Der Nuklearmediziner 44, n. 02 (giugno 2021): 127–34. http://dx.doi.org/10.1055/a-1382-2812.

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ZusammenfassungVon Erdalkalimetallionen außer Beryllium ist bekannt, dass sie ein calcimimetisches Verhalten zeigen. Damit ist ihr Schicksal in vivo vorgezeichnet, das in einem beträchtlichen Maße durch den Einbau in Knochengewebe, welches zum Hauptteil aus Hydroxylapatit besteht, charakterisiert ist. In diesem Sinne wurde auch die Verwendung von Radionukliden dieser Elemente als Knochensucher forciert. Mit Ausnahme von Beryllium und Magnesium wurden Tierexperimente und Humananwendungen mit Radionukliden von Calcium, Strontium, Barium und Radium durchgeführt, wobei bis heute lediglich Strontium und Radium, in der Hauptsache als Therapienuklide zur palliativen Behandlung von Knochenmetastasen, Eingang in nuklearmedizinische Routineanwendungen gefunden haben. In diesem Übersichtsartikel werden die Radionuklide des Bariums vorgestellt, sowie deren Herstellung und Verwendung. Aktuelle Forschungsergebnisse mit Radionukliden des Bariums in Radiopharmazie und Nuklearmedizin werden präsentiert.

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2

Urade, Masaaki, e Toshihumi Shinbo. "Barium Appendicitis 1 Month After a Barium Meal". International Surgery 97, n. 4 (1 gennaio 2013): 296–98. http://dx.doi.org/10.9738/cc160.1.

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Abstract Because barium sulfate (BaSO4) is not harmful to the mucosa, it is widely used for gastrointestinal imaging. Barium appendicitis is a very rare complication of barium meals and barium enema. We report a case of acute appendicitis associated with retained appendiceal barium. A 47-year-old man presented with right lower abdominal pain after upper gastrointestinal imaging was performed using barium 1 month earlier. The abdominal plain roentgenogram showed an area of retained barium in the right lower quadrant. Multiplanar reconstruction of computed tomography scans showed barium retention in the appendix. Emergency appendectomy was performed. A cross section of the specimen revealed the barium mass. Barium-associated appendicitis is a very rare clinical entity but we should be cautious of this uncommon disease when we encounter barium deposits in the appendix after barium examination. This report is significant because barium was identified both macroscopically and microscopically.

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3

&NA;. "Barium". Reactions Weekly &NA;, n. 1403 (maggio 2012): 10. http://dx.doi.org/10.2165/00128415-201214030-00025.

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4

&NA;. "Barium". Reactions Weekly &NA;, n. 369 (settembre 1991): 5. http://dx.doi.org/10.2165/00128415-199103690-00016.

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5

&NA;. "Barium". Reactions Weekly &NA;, n. 1227 (novembre 2008): 6–7. http://dx.doi.org/10.2165/00128415-200812270-00017.

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6

Willms, Ann Bagley. "Barium". American Journal of Roentgenology 179, n. 4 (ottobre 2002): 1022. http://dx.doi.org/10.2214/ajr.179.4.1791022.

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7

&NA;. "Barium". Reactions Weekly &NA;, n. 1257 (giugno 2009): 10. http://dx.doi.org/10.2165/00128415-200912570-00030.

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8

&NA;. "Barium". Reactions Weekly &NA;, n. 1326 (novembre 2010): 10. http://dx.doi.org/10.2165/00128415-201013260-00031.

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9

DALTON, LOUISA WRAY. "BARIUM". Chemical & Engineering News 81, n. 36 (8 settembre 2003): 134. http://dx.doi.org/10.1021/cen-v081n036.p134.

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10

Free, B., G. Meadows e G. Jaafari. "Barium/barium oxide dispensation rate measurement". Applied Surface Science 24, n. 3-4 (ottobre 1985): 460–74. http://dx.doi.org/10.1016/0169-4332(85)90193-x.

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11

Lewars, M. D. "Barium embolisation during barium enema examination". British Journal of Radiology 60, n. 720 (dicembre 1987): 1236. http://dx.doi.org/10.1259/0007-1285-60-720-1236-a.

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12

Fowlie, S., J. R. Barton e G. M. Fraser. "Barium embolisation during barium enema examination". British Journal of Radiology 60, n. 720 (dicembre 1987): 1236–37. http://dx.doi.org/10.1259/0007-1285-60-720-1236-b.

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13

TAYLOR, DONNA B., e PAUL YOONG. "Non Fatal Barium Intravasation During Barium Enema". Australasian Radiology 34, n. 2 (maggio 1990): 165–67. http://dx.doi.org/10.1111/j.1440-1673.1990.tb02835.x.

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14

Grzesiak, M., A. Rafalska-Łasocha e W. Łasocha. "Synthesis and XRPD studies of new barium dicarboxylates". Powder Diffraction 26, n. 1 (marzo 2011): 53–65. http://dx.doi.org/10.1154/1.3548073.

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Abstract (sommario):

New salts of barium with dicarboxylic acids (glutaric, adipic, pimelic, suberic, sebacic, and dodecanedioic) were synthesized and characterized by powder diffraction techniques. In addition to the basic crystallographic data and chemical analyses of barium glutarate hexahydrate {1}, barium adipate {2}, barium pimelate {3}, barium disuberate {4}, barium sebacate {5}, and barium dodecanedioate {6}, the processes of their thermal decomposition were investigated by XRPD. All the compounds decompose to barium carbonate at temperatures between 400 and 500 °C.

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15

Marhana, Isnin Anang, e Adhari Ajipurnomo. "Seorang Wanita Mengalami Aspirasi Barium Dengan Komplikasi Pneumonia". Jurnal Respirasi 5, n. 1 (30 gennaio 2019): 5. http://dx.doi.org/10.20473/jr.v5-i.1.2019.5-9.

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Background. Barium aspiration is one of rare major complication of esophagography. Aspiration pneumonia occurs about 40% without clinical symptom and can cause 30% of dead. Case. A female 62 years old choked a mount of barium when swallowing barium liquid in esophagography procedure. There was ronkhi on lower left haemithorax and granuler pattern on left paracardial impressed the rest of barium in chest x-ray photo. Patient suffered symptom of infection in eight days evaluation with infiltrate and rest of barium from chest x-ray photo. Microbiology examination of bronchus lavage founded pathogen microbe Burcholderia Gladioli and Pseudomonas and containing 1,22 mg/L of barium. Discussion. Barium aspiration can occur in esophagography procedure in extreme age. Chest x-ray and Computed Tomography can be used as primer tool to diagnose and evaluate barium aspiration which imaging hiperdens pattern due to barium with high atomic number (56). Prognosis of aspiration barium can be affected by the quantity and density of barium liquid which is choked and comorbid factor in patient. Barium aspiration mixed with secrete of oropharing which containing colony of pathogen can cause penumonia as disease complication. There is still no guideline for barium aspiration management, but bronchoscopy is recommended by many clinician. Conclusion. Pneumonia occur when aspiration barium mixed with secrete oropharing which containing colony of pathogen. Chest x-ray and CT scan can be used as tool to diagnose barium aspiration. Bronchoscopy is recommended to diagnose and to manage barium aspiration. When pneumonia is suspicious, antibiotic with anaerob activity is recommended given.

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16

Bleaney, B., M. J. M. Leask, R. C. C. Ward e M. R. Wells. "Magnetic properties of barium holmium fluoride, barium erbium fluoride and barium thulium fluoride". Applied Magnetic Resonance 14, n. 2-3 (aprile 1998): 381–85. http://dx.doi.org/10.1007/bf03161903.

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17

Bleaney, B., M. J. M. Leask, R. C. C. Ward e M. R. Wells. "Magnetic properties of barium holmium fluoride, barium erbium fluoride and barium thulium fluoride". Applied Magnetic Resonance 14, n. 2-3 (aprile 1998): 387–92. http://dx.doi.org/10.1007/bf03161904.

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18

Luptáková, Alena, Ingrida Kotuličová, Magdaléna Bálintová e Štefan Demčák. "Bacterial Reduction Of Barium Sulphate By Sulphate-Reducing Bacteria". Nova Biotechnologica et Chimica 14, n. 2 (1 dicembre 2015): 135–40. http://dx.doi.org/10.1515/nbec-2015-0022.

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AbstractAcid mine drainage (AMD) is a worldwide problem leading to contamination of water sources. AMD are characterized by low pH and high content of heavy metals and sulphates. The barium salts application presents one of the methods for the sulphates removing from AMD. Barium chloride, barium hydroxide and barium sulphide are used for the sulphates precipitation in the form of barium sulphate. Because of high investment costs of barium salts, barium sulphide is recycled from barium sulphate precipitates. It can be recycled by thermic or bacterial reduction of barium sulphate. The aim of our study was to verify experimentally the possibility of the bacterial transformation of BaSO4to BaS by sulphate-reducing bacteria. Applied BaSO4came from experiments of sulphates removal from Smolnik AMD using BaCl2.

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19

Saini, Neenu, Ruby Jindal e Archana Tripathi. "Lattice vibrations of the Ruddlesden-Popper compounds barium orthorhodate, barium orthoiridate, barium orthoplumbate, and barium orthostannate in tetragonal phase". Spectroscopy Letters 55, n. 2 (1 febbraio 2022): 138–45. http://dx.doi.org/10.1080/00387010.2022.2030363.

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20

Husti, Laura, Roberto Gallino, Sara Bisterzo, Oscar Straniero e Sergio Cristallo. "Barium Stars: Theoretical Interpretation". Publications of the Astronomical Society of Australia 26, n. 3 (2009): 176–83. http://dx.doi.org/10.1071/as08065.

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AbstractBarium stars are extrinsic Asymptotic Giant Branch (AGB) stars. They present the s-enhancement characteristic for AGB and post-AGB stars, but are in an earlier evolutionary stage (main sequence dwarfs, subgiants, red giants). They are believed to form in binary systems, where a more massive companion evolved faster, produced the s-elements during its AGB phase, polluted the present barium star through stellar winds and became a white dwarf. The samples of barium stars of Allen & Barbuy (2006) and of Smiljanic et al. (2007) are analysed here. Spectra of both samples were obtained at high-resolution and high S/N. We compare these observations with AGB nucleosynthesis models using different initial masses and a spread of 13C-pocket efficiencies. Once a consistent solution is found for the whole elemental distribution of abundances, a proper dilution factor is applied. This dilution is explained by the fact that the s-rich material transferred from the AGB to the nowadays observed stars is mixed with the envelope of the accretor. We also analyse the mass transfer process, and obtain the wind velocity for giants and subgiants with known orbital period. We find evidence that thermohaline mixing is acting inside main sequence dwarfs and we present a method for estimating its depth.

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21

Mizushima, Yasuyuki, e Makoto Hori. "Preparation of barium hexa-aluminate aerogel". Journal of Materials Research 9, n. 9 (settembre 1994): 2272–76. http://dx.doi.org/10.1557/jmr.1994.2272.

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Barium hexa-aluminate (BaO · 6Al2O3) aerogels were prepared using a supercritical drying method and their properties examined. A barium hexa-aluminate aerogel prepared from a double alkoxide of barium and aluminum showed a high specific surface area of 421 m2/g. Monolithic barium hexa-aluminate formed. No BaO · Al2O3 or alumina was observed, as is often the case in powder processing. The specific surface area of the monolithic barium hexa-aluminate fired at 1400 °C for 2 h was 12 m2/g, while that of the barium hexa-aluminate xerogel was only 0.8 m2/g. A barium hexa-aluminate aerogel was also prepared using barium by using a chelating agent. This aerogel showed a specific surface area of 454 m2/g as-dried. In the case of the chelating agent, BaO · Al2O3 was also detected along with barium hexa-aluminate after firing.

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22

Danielson, KS, e TB Hunter. "Barium capsules". American Journal of Roentgenology 144, n. 2 (febbraio 1985): 414. http://dx.doi.org/10.2214/ajr.144.2.414.

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23

Bartram, C. I. "Barium Radiology". Scandinavian Journal of Gastroenterology 29, sup203 (gennaio 1994): 20–23. http://dx.doi.org/10.3109/00365529409091391.

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24

&NA;. "Barium sulfate". Reactions Weekly &NA;, n. 465 (agosto 1993): 5. http://dx.doi.org/10.2165/00128415-199304650-00017.

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25

&NA;. "Barium sulfate". Reactions Weekly &NA;, n. 657 (giugno 1997): 7. http://dx.doi.org/10.2165/00128415-199706570-00014.

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26

Kuriyama, Akira. "Barium Appendicitis". Internal Medicine 54, n. 12 (2015): 1571. http://dx.doi.org/10.2169/internalmedicine.54.4359.

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27

&NA;. "Barium sulfate". Reactions Weekly &NA;, n. 1215 (agosto 2008): 10. http://dx.doi.org/10.2165/00128415-200812150-00030.

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28

&NA;. "Barium sulfate". Reactions Weekly &NA;, n. 1076 (novembre 2005): 7. http://dx.doi.org/10.2165/00128415-200510760-00019.

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29

Mehrotra, K. N., e J. K. Jain. "Barium Soaps". Tenside Surfactants Detergents 25, n. 1 (1 gennaio 1988): 47–52. http://dx.doi.org/10.1515/tsd-1988-250120.

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30

&NA;. "Barium sulphate". Reactions Weekly &NA;, n. 1270 (settembre 2009): 9. http://dx.doi.org/10.2165/00128415-200912700-00024.

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31

&NA;. "Barium sulfate". Reactions Weekly &NA;, n. 1283 (gennaio 2010): 20. http://dx.doi.org/10.2165/00128415-201012830-00064.

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32

&NA;. "Barium sulfate". Reactions Weekly &NA;, n. 325 (novembre 1990): 5. http://dx.doi.org/10.2165/00128415-199003250-00012.

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33

&NA;. "Barium sulfate". Reactions Weekly &NA;, n. 349 (maggio 1991): 5. http://dx.doi.org/10.2165/00128415-199103490-00013.

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34

&NA;. "Barium sulfate". Reactions Weekly &NA;, n. 1317 (settembre 2010): 15. http://dx.doi.org/10.2165/00128415-201013170-00041.

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35

&NA;. "Barium sulfate". Reactions Weekly &NA;, n. 950 (maggio 2003): 7. http://dx.doi.org/10.2165/00128415-200309500-00018.

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36

&NA;. "Barium sulfate". Reactions Weekly &NA;, n. 1298 (aprile 2010): 11. http://dx.doi.org/10.2165/00128415-201012980-00027.

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37

&NA;. "Barium sulfate". Reactions Weekly &NA;, n. 1298 (aprile 2010): 11. http://dx.doi.org/10.2165/00128415-201012980-00029.

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38

&NA;. "Barium sulfate". Reactions Weekly &NA;, n. 1306 (giugno 2010): 11. http://dx.doi.org/10.2165/00128415-201013060-00034.

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39

Levine, Marc S., Stephen E. Rubesin, Igor Laufer e Hans Herlinger. "Barium studies". Gastrointestinal Endoscopy 55, n. 7 (giugno 2002): S16—S24. http://dx.doi.org/10.1067/mge.2002.124749.

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40

&NA;. "Barium sulfate". Reactions Weekly &NA;, n. 479 (novembre 1993): 5. http://dx.doi.org/10.2165/00128415-199304790-00016.

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41

&NA;. "Barium sulfate". Reactions Weekly &NA;, n. 508 (luglio 1994): 5. http://dx.doi.org/10.2165/00128415-199405080-00019.

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42

&NA;. "Barium sulfate". Reactions Weekly &NA;, n. 1350 (maggio 2011): 14. http://dx.doi.org/10.2165/00128415-201113500-00035.

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43

Varatharaj, A., C. Roome e S. Allsup. "Barium aspiration". QJM 105, n. 9 (24 agosto 2011): 903–4. http://dx.doi.org/10.1093/qjmed/hcr146.

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44

Turbendian, Harma K., Jian Shou e Philip S. Barie. "Barium Peritonitis". Surgical Infections 14, n. 6 (dicembre 2013): 561–62. http://dx.doi.org/10.1089/sur.2012.146.

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45

Cohen, Natan, David Modai, Ada Rosen, Ahuva Golik e Joshua Weissgarten. "Barium Appendicitis". Journal of Clinical Gastroenterology 9, n. 4 (agosto 1987): 447–51. http://dx.doi.org/10.1097/00004836-198708000-00018.

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46

Jehle, Michael, Harald Scherer, Marco Wendorff e Caroline Röhr. "Barium aluminides". Journal of Solid State Chemistry 182, n. 5 (maggio 2009): 1129–35. http://dx.doi.org/10.1016/j.jssc.2009.02.005.

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47

Young, Jay A. "Barium Sulfate". Journal of Chemical Education 83, n. 1 (gennaio 2006): 33. http://dx.doi.org/10.1021/ed083p33.

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48

Young, Jay A. "Barium Nitrate". Journal of Chemical Education 83, n. 1 (gennaio 2006): 34. http://dx.doi.org/10.1021/ed083p34.

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49

Albeldawi, Mazen, e Rohit Makkar. "Barium Aspiration". New England Journal of Medicine 366, n. 11 (15 marzo 2012): 1038. http://dx.doi.org/10.1056/nejmicm1108468.

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50

Fang, Yu-Jen, Hsiu-Po Wang, Cheng-Maw Ho e Kao-Lang Liu. "Barium appendicitis". Surgery 146, n. 5 (novembre 2009): 957–58. http://dx.doi.org/10.1016/j.surg.2008.05.021.

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