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Sample records for biotest ag blood

  1. ESTIMATION OF EFFICIENCY OF PHYSIOTHERAPEUTICAL TREATMENT FOR SCHOLIOSIS IN CHILDREN WITH BIOTESTING

    Directory of Open Access Journals (Sweden)

    T. V. Khaymina

    2010-01-01

    Full Text Available Blood serum biotesting in children of 9-14 years old with idiopathic scoliosis of I-II level (according to V.D. Chaklin revealed neurohumoral background change in comparison with age-related standard. Treatment regiment of this disease included magneto impulse therapy with field induction up to 1,5 Tl or/and electrophoresis. Repeated testing displayed that isolated magneto impulse influence evokes neuro-peptide regulation normalization under the most positive clinical effect.

  2. Biotest method in Rhine river surveillance

    International Nuclear Information System (INIS)

    Nolte, M.

    1994-01-01

    Against the background of the 1986 Sandoz chemical accident the national and international commission for the protection of the Rhine river was prompted to construct, a continuous supra-regional surveillance of the river. Its aim is a biological warning system which encompasses the exising chemical-physical monitoring of the water. The Biotest method was newly developed in a joint plan of eight separate projects. The bio-monitors are continuous or semi-continuous systems which make up for the time delay of chemical analyses. (BWI) [de

  3. A basis for modelling of radionuclide flow in the Forsmark biotest basin

    International Nuclear Information System (INIS)

    Notter, M.; Snoeijs, P.; Argaerde, L.; Elert, M.

    1987-01-01

    Certain radionuclides are discharged together with the cooling water of Forsmark power station. Of these, Mn-54, Co-60, Zn-65 and Ag-110 m are easily detectable in the environment. This report gives a conceptual five-compartment model for the flows of radionuclides within the basin ecosystem. The available data from biological and radio-ecological investigations in the biotest basin were used to quantify the amounts of radionuclides in each of the reservoirs. The subsystem water-sediment-primary producers was pointed out to be the most interesting part of the ecosystem for studying radionuclides with mathematical modelling in the future. (orig./DG)

  4. A multicenter evaluation of the Biotest legionella urinary antigen EIA

    DEFF Research Database (Denmark)

    Harrison, Timothy; Uldum, Søren; Alexiou-Daniel, Stella

    1998-01-01

    OBJECTIVES: To undertake a multicenter study to evaluate the Biotest legionella urinary antigen enzyme immunoassay (EIA) performance against those EIAs already in use in 14 European laboratories. METHODS: Each laboratory examined urine specimens from appropriate patients using both their current...... assay and the Biotest EIA. Each examined: a standard panel of 12 coded urine samples (distributed by Biotest); a panel of 10 coded urine samples provided as part of a European external quality assurance (EQA) scheme; urine samples from patients with proven legionnaires' disease (LD); urine samples from...... patients with pneumonia of microbiologically proven cause other than LD; and urine samples submitted for routine examination. Thus, the performance of the Biotest assay (in comparison with current EIAs), its specificity and utility, and the inter-laboratory agreement were assessed. RESULTS: Inter...

  5. Primary immunization-like response without hepatitis following transfusion of HBeAg-positive blood

    DEFF Research Database (Denmark)

    Gluud, C; Aldershvile, J; Kryger, P

    1983-01-01

    An accidental transfusion of hepatitis B surface antigen (HBsAg) and hepatitis B e antigen (HBeAg) positive whole blood was given to a 19-yr-old male, bleeding after tonsillectomy. Serum obtained from the patient before the transfusion revealed no hepatitis B antigens or antibodies. After...... the transfusion the patient became HBsAg-positive, cleared this antigen and developed antibodies to both HBsAg and HBeAg. The transfusion blood was positive for total antibody and IgM antibody to hepatitis B core antigen (HBcAg). The patient's blood became positive for these antibodies after the transfusion...

  6. File list: Unc.Bld.10.AllAg.Peripheral_blood [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Bld.10.AllAg.Peripheral_blood hg19 Unclassified Blood Peripheral blood SRX10800...66,SRX1080067 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Bld.10.AllAg.Peripheral_blood.bed ...

  7. File list: ALL.Bld.50.AllAg.Peripheral_blood [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.50.AllAg.Peripheral_blood hg19 All antigens Blood Peripheral blood SRX10033...4075,SRX1034080,SRX1034076,SRX1034079,SRX1034072,SRX1034078,SRX848890,SRX1034067 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Bld.50.AllAg.Peripheral_blood.bed ...

  8. File list: NoD.Bld.50.AllAg.Peripheral_blood [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Bld.50.AllAg.Peripheral_blood hg19 No description Blood Peripheral blood SRX100...034080,SRX1034076,SRX1034079,SRX1034072,SRX1034078,SRX848890,SRX1034067 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Bld.50.AllAg.Peripheral_blood.bed ...

  9. File list: ALL.Bld.20.AllAg.Peripheral_blood [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.20.AllAg.Peripheral_blood hg19 All antigens Blood Peripheral blood SRX10033...4075,SRX1034080,SRX1034076,SRX1034079,SRX1034072,SRX1034078,SRX848890,SRX1034067 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Bld.20.AllAg.Peripheral_blood.bed ...

  10. File list: Unc.Bld.20.AllAg.Peripheral_blood [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Bld.20.AllAg.Peripheral_blood hg19 Unclassified Blood Peripheral blood SRX10800...66 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Bld.20.AllAg.Peripheral_blood.bed ...

  11. File list: NoD.Bld.05.AllAg.Peripheral_blood [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Bld.05.AllAg.Peripheral_blood hg19 No description Blood Peripheral blood SRX100...034080,SRX848890,SRX1034079,SRX1034072,SRX1034067,SRX1034078,SRX1034075 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Bld.05.AllAg.Peripheral_blood.bed ...

  12. File list: NoD.Bld.10.AllAg.Peripheral_blood [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Bld.10.AllAg.Peripheral_blood hg19 No description Blood Peripheral blood SRX100...034078,SRX848890,SRX1034067,SRX1034075,SRX1034080,SRX1034076,SRX1034079 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Bld.10.AllAg.Peripheral_blood.bed ...

  13. File list: Unc.Bld.05.AllAg.Peripheral_blood [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Bld.05.AllAg.Peripheral_blood hg19 Unclassified Blood Peripheral blood SRX10800...66,SRX1080067 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Bld.05.AllAg.Peripheral_blood.bed ...

  14. File list: Unc.Bld.50.AllAg.Peripheral_blood [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Bld.50.AllAg.Peripheral_blood hg19 Unclassified Blood Peripheral blood SRX10800...66 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Bld.50.AllAg.Peripheral_blood.bed ...

  15. File list: NoD.Bld.20.AllAg.Peripheral_blood [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Bld.20.AllAg.Peripheral_blood hg19 No description Blood Peripheral blood SRX100...034080,SRX1034076,SRX1034079,SRX1034072,SRX1034078,SRX848890,SRX1034067 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Bld.20.AllAg.Peripheral_blood.bed ...

  16. File list: NoD.Bld.05.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Bld.05.AllAg.Peripheral_blood_stem_cells hg19 No description Blood Peripheral b...lood stem cells http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Bld.05.AllAg.Peripheral_blood_stem_cells.bed ...

  17. File list: Oth.Bld.05.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.05.AllAg.Peripheral_blood_stem_cells hg19 TFs and others Blood Peripheral b...lood stem cells SRX1036365 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Bld.05.AllAg.Peripheral_blood_stem_cells.bed ...

  18. File list: InP.Bld.10.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Bld.10.AllAg.Peripheral_blood_stem_cells hg19 Input control Blood Peripheral bl...ood stem cells http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Bld.10.AllAg.Peripheral_blood_stem_cells.bed ...

  19. File list: Pol.Bld.50.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Bld.50.AllAg.Peripheral_blood_stem_cells hg19 RNA polymerase Blood Peripheral b...lood stem cells http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Pol.Bld.50.AllAg.Peripheral_blood_stem_cells.bed ...

  20. File list: DNS.Bld.20.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Bld.20.AllAg.Peripheral_blood_stem_cells hg19 DNase-seq Blood Peripheral blood ...stem cells SRX838173,SRX838174 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/DNS.Bld.20.AllAg.Peripheral_blood_stem_cells.bed ...

  1. File list: Pol.Bld.20.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Bld.20.AllAg.Peripheral_blood_stem_cells hg19 RNA polymerase Blood Peripheral b...lood stem cells http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Pol.Bld.20.AllAg.Peripheral_blood_stem_cells.bed ...

  2. File list: DNS.Bld.10.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Bld.10.AllAg.Peripheral_blood_stem_cells hg19 DNase-seq Blood Peripheral blood ...stem cells SRX838173,SRX838174 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/DNS.Bld.10.AllAg.Peripheral_blood_stem_cells.bed ...

  3. File list: His.Bld.05.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.05.AllAg.Peripheral_blood_stem_cells hg19 Histone Blood Peripheral blood st...em cells SRX879221,SRX879209,SRX879208,SRX879210 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Bld.05.AllAg.Peripheral_blood_stem_cells.bed ...

  4. File list: Unc.Bld.50.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Bld.50.AllAg.Peripheral_blood_stem_cells hg19 Unclassified Blood Peripheral blo...od stem cells http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Bld.50.AllAg.Peripheral_blood_stem_cells.bed ...

  5. File list: His.Bld.20.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.20.AllAg.Peripheral_blood_stem_cells hg19 Histone Blood Peripheral blood st...em cells SRX879208,SRX879221,SRX879210,SRX879209 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Bld.20.AllAg.Peripheral_blood_stem_cells.bed ...

  6. File list: Pol.Bld.05.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Bld.05.AllAg.Peripheral_blood_stem_cells hg19 RNA polymerase Blood Peripheral b...lood stem cells http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Pol.Bld.05.AllAg.Peripheral_blood_stem_cells.bed ...

  7. File list: NoD.Bld.20.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Bld.20.AllAg.Peripheral_blood_stem_cells hg19 No description Blood Peripheral b...lood stem cells http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Bld.20.AllAg.Peripheral_blood_stem_cells.bed ...

  8. File list: His.Bld.50.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.50.AllAg.Peripheral_blood_stem_cells hg19 Histone Blood Peripheral blood st...em cells SRX879208,SRX879221,SRX879210,SRX879209 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Bld.50.AllAg.Peripheral_blood_stem_cells.bed ...

  9. File list: Unc.Bld.05.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Bld.05.AllAg.Peripheral_blood_stem_cells hg19 Unclassified Blood Peripheral blo...od stem cells http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Bld.05.AllAg.Peripheral_blood_stem_cells.bed ...

  10. File list: Oth.Bld.10.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.10.AllAg.Peripheral_blood_stem_cells hg19 TFs and others Blood Peripheral b...lood stem cells SRX1036365 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Bld.10.AllAg.Peripheral_blood_stem_cells.bed ...

  11. File list: NoD.Bld.10.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Bld.10.AllAg.Peripheral_blood_stem_cells hg19 No description Blood Peripheral b...lood stem cells http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Bld.10.AllAg.Peripheral_blood_stem_cells.bed ...

  12. File list: His.Bld.10.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.10.AllAg.Peripheral_blood_stem_cells hg19 Histone Blood Peripheral blood st...em cells SRX879208,SRX879221,SRX879210,SRX879209 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Bld.10.AllAg.Peripheral_blood_stem_cells.bed ...

  13. File list: Unc.Bld.10.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Bld.10.AllAg.Peripheral_blood_stem_cells hg19 Unclassified Blood Peripheral blo...od stem cells http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Bld.10.AllAg.Peripheral_blood_stem_cells.bed ...

  14. File list: Oth.Bld.50.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.50.AllAg.Peripheral_blood_stem_cells hg19 TFs and others Blood Peripheral b...lood stem cells SRX1036365 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Bld.50.AllAg.Peripheral_blood_stem_cells.bed ...

  15. File list: Unc.Bld.20.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Bld.20.AllAg.Peripheral_blood_stem_cells hg19 Unclassified Blood Peripheral blo...od stem cells http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Bld.20.AllAg.Peripheral_blood_stem_cells.bed ...

  16. File list: DNS.Bld.50.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Bld.50.AllAg.Peripheral_blood_stem_cells hg19 DNase-seq Blood Peripheral blood ...stem cells SRX838174,SRX838173 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/DNS.Bld.50.AllAg.Peripheral_blood_stem_cells.bed ...

  17. File list: NoD.Bld.50.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Bld.50.AllAg.Peripheral_blood_stem_cells hg19 No description Blood Peripheral b...lood stem cells http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Bld.50.AllAg.Peripheral_blood_stem_cells.bed ...

  18. File list: Oth.Bld.20.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.20.AllAg.Peripheral_blood_stem_cells hg19 TFs and others Blood Peripheral b...lood stem cells SRX1036365 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Bld.20.AllAg.Peripheral_blood_stem_cells.bed ...

  19. File list: DNS.Bld.05.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Bld.05.AllAg.Peripheral_blood_stem_cells hg19 DNase-seq Blood Peripheral blood ...stem cells SRX838173,SRX838174 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/DNS.Bld.05.AllAg.Peripheral_blood_stem_cells.bed ...

  20. File list: InP.Bld.05.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Bld.05.AllAg.Peripheral_blood_stem_cells hg19 Input control Blood Peripheral bl...ood stem cells http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Bld.05.AllAg.Peripheral_blood_stem_cells.bed ...

  1. File list: Pol.Bld.10.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Pol.Bld.10.AllAg.Peripheral_blood_stem_cells hg19 RNA polymerase Blood Peripheral b...lood stem cells http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Pol.Bld.10.AllAg.Peripheral_blood_stem_cells.bed ...

  2. File list: InP.Bld.50.AllAg.Peripheral_blood_stem_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Bld.50.AllAg.Peripheral_blood_stem_cells hg19 Input control Blood Peripheral bl...ood stem cells http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Bld.50.AllAg.Peripheral_blood_stem_cells.bed ...

  3. Use of the Crustacean Artemia franciscana for Alternative Biotests

    Directory of Open Access Journals (Sweden)

    Petr Dvořák

    2010-01-01

    Full Text Available Use of the crustacean Artemia franciscana for alternative biotests of the second generation was studied, and possible experimental design and applications of such tests outlined. In addition to the classical use in ecotoxicology, the test can be used in pharmacology as well, or to monitor the effects of ionizing radiation in co-exposure with some chemical compounds. The synergistic effect of co-exposure of PCB (DELOR 103, cadmium chloride and potassium dichromate with beta 89Sr irradiation was shown. We also demonstrated the anti-oxidative and pro-oxidative effects of the ascorbic acid in dependence on its concentration. Use of the pharmaco-toxicological screening in search for the novel inhibitors of cyclin-dependent kinases was demonstrated as well, showing that Artemia franciscana may be used as a suitable biosensor instead of the expensive tests on higher vertebrates.

  4. Epilithic algal assemblages in the Forsmark Biotest basin

    Energy Technology Data Exchange (ETDEWEB)

    Snoeijs, P.

    1987-04-01

    The Forsmark Biotest Basin is an artificial offshore brackish lake, through which the cooling water is led from the Forsmark Nuclear Power Station on the Swedish east coast. The Biotest Basin differs from the Bothnian Sea surrounding it by a temperature elevation of up to 10 degrees C, no ice cover in winter, and an artificial, fast current. At 11 sites in- and outside the basin, benthic algal assemblages on stones in the hydrolittoral belt were sampled every third week during one year. Cover abundances were estimated for all algae occurring on the stones, but for diatoms only when they formed blooms. The results of the vegetation analyses are given. Diversity indices and dominance-diversity curves were computed for each site on the basis of pooled data for the cold season and for the rest of the year. The algae included both unicellular and multicellular forms. In total 88 taxa were distinguished in the species lists: 29 Cyanophyta, 7 Rhodophyta, 1 Chrysophyceae, 9 Fucophyceae, 17 Diatomophyceae and 25 Chlorophyta. In terms of percentage cover-abundance, blue-green and green algae increased with temperature, while red and brown algae and diatoms decreased with temperature in the interval between the minimum (0 degrees C) and the maximum (25.7 degrees C) water temperatures that were measured during the investigation period. Melosira spp. and Nitzschia filiformis proved to be the diatoms most favoured by the cooling water discharge. Lower diversity and greater dominance of one or a few species over the other was caused by thermal discharge at sites with fast-flowing water, but the opposite occurred at sites with quiescent water, mainly due to a greater number and higher abundances of blue-green algal species and thread-like green algae at the latter sites. This report also gives some notes on taxonomy of the encountered species.

  5. Vegetation in the Forsmark biotest basin, 1974-1986

    International Nuclear Information System (INIS)

    Renstroem, S.; Svensson, Roger; Wigren-Svensson, M.

    1990-05-01

    Since 1980, Forsmark Power Plants has discharged large amount of cooling water into the Biotest basin. In 1974, before the dam was constructed, and 1980 to 1986, the macrophytic algae and higher vegetation inside and around the basin has been investigated. The observed changes are mainly caused by the increased water temperature causing lack of ice cover during the winter, the embankment reducing the exposition, the heavy water stream through the basin and the reduced light transmission in the water. The macroscopic vegetation in the Biotest basin was originally distributed all over the lake, but is now mainly found in more shallow water. The deepest part, a passage from the input of the cooling water to the output, totally lack vegetation. The reason for this is a combination of the heavy stream, raised temperature and reduced light transmission. The total biomass of macroscopic vegetation in the basin has been reduced from c. 70 metric ton in 1980 to c. 27 ton in 1982 and 1986. Among the most important species, the production of Chara spp. and Potamogeton pectinatus have been strongly reduced, while Cladophora glomerata and Vaucheria sp. have increased. Especially for Vaucheria, the raised temperature has been of vital importance. Among other species, Tolypella nidifica first increased, but has now totally disappeared. Zannichellia palustris was the only phanerogam which increased all the time. It is Z. palustris var. major which stands for the increase, while Z. palustris var. repens has disappeared from the basin. The shore vegetation, mainly reeds, has expanded conspicuously. From 1974 to 1980, the shore vegetation was favoured by the reduced exposition caused by the embankment. Since then, the raised temperature and absence of ice cover have resulted in an accelerating expansion of mainly Phragmites communis. Scirpus tabernaemontani and S. maritimus were first increasing, but do not seem to be able to compete with Phragmites in the long run. (au)

  6. RESULTS OF GENOTYPING HEPATITIS VIRUS B IN HBsAg-NEGATIVE BLOOD DONORS IN ASTANA, KAZAKHSTAN

    Directory of Open Access Journals (Sweden)

    Yu. V. Ostankova

    2017-01-01

    Full Text Available The prevalence of HBV infection is estimated by the frequency of occurrence of HBsAg and varies depending on the geographic region. Chronic infection is characterized by a stable presence of HBsAg for 6 months, with the exception of the occult form of the disease, characterized by the absence of HBsAg, an extremely low level of HBV DNA in the blood serum. The problem of identifying occult HBV (ocHBV is especially relevant because of the development of transplantology and transfusiology. However, serological screening of donor blood used in the Russian Federation and Central Asian countries does not reveal HBV seronegative donors. Since HBV infection is possible with the introduction of small doses of the virus, the importance of using complex molecular methods for detecting donor ocHBV is obvious, despite the low viral load, since donor blood is used predominantly in patients with severe course of various diseases characterized by increased susceptibility to HBV because of immunosuppression. The aim of our work was to study the characteristics of the genetic structure of the ocHBV in donors in Astana, Kazakhstan. A total of 500 blood plasma samples from HBsAg-negative donors were obtained in 2012 from residents of Kazakhstan, Astana. Using the method, we proposed to detect HBV DNA with a low viral load, HBV was detected in 9.4% of donors. Serological markers were found in 12.7% of patients with HBV DNA, 8.5% had HBcor IgG antibodies, 4.2% had HBcor IgG and HBe IgG antibodies at the same time. Thus, in 41 (87.3% of the blood donor, ocHBV was seronegative. Based on the phylogenetic analysis of the 47 isolates showed that the HBV of genotype D (95.75% prevails in the examined group in comparison with HBV of genotype A (4.25%. HBV subgenotypes are represented in the following ratios: D1 — 46.8%, D2 — 17.05%, D3 — 31.9%, A2 — 4.25%. In a comparative analysis, the distribution of HBV subgenotypes in the group with ocHBV and in the case of the

  7. Bioassay-directed fractionation of organic extracts of marine surface sediments from the north and Baltic sea. Pt. II. Results of the biotest battery and development of a biotest index

    Energy Technology Data Exchange (ETDEWEB)

    Kammann, U.; Danischewski, D.; Vobach, M. [Federal Research Centre for Fisheries, Inst. for Fishery Ecology, Hamburg (Germany); Biselli, S. [Federal Maritime and Hydrographic Agency, Hamburg (Germany); Eurofins Wiertz-Eggert-Joerissen, Hamburg (Germany); Reineke, N.; Huehnerfuss, H. [Univ. of Hamburg, Inst. for Organic Chemistry, Hamburg (Germany); Wosniok, W. [Univ. of Bremen, Inst. of Statistics, Bremen (Germany); Kinder, A.; Sierts-Herrmann, A.; Steinhart, H. [Univ. of Hamburg, Inst. for Food Chemistry, Hamburg (Germany); Theobald, N. [Federal Maritime and Hydrographic Agency, Hamburg (Germany); Vahl, H.H.; Westendorf, J. [Univ. of Hamburg, Univ. Hospital Hamburg-Eppendorf, Dept. for Toxicology, Hamburg (Germany)

    2005-11-01

    Goal, Scope and Background. The ecological relevance of contaminants in mixtures is difficult to assess, because of possible interactions and due to lacking toxicity data for many substances present in environmental samples. Marine sediment extracts, which contain a mixture of environmental contaminants in low concentrations, were the object of this study. The extracts were investigated with a set of different biotests in order to identify the compound or the substance class responsible for the toxicity. For this goal, a combination of biotests, biotest-directed fractionation and chemical analysis has been applied. Further on, a strategy for the development of a biotest index to describe the toxicity of the fractions without a prior ranking of the test results is proposed. This article (Part II) focuses on the biological results of the approach. Methods. The toxicological potential of organic extracts of sediments from the North Sea and the Baltic Sea was analyzed in a bioassay-directed fractionation procedure with a set of biotests: luciferase reporter gene assays on hormone receptor and Ah receptor, arabinose resistance test, fish embryo test (Danio rerio), comet assay, acetylcholinesterase inhibition test, heat-shock protein 70 induction, oxidative stress and luminescence inhibition test (Vibrio fischeri). The test results provided the basis for the calculation of a biotest index by factor analysis to compare the toxicity of the samples and fractions. Results and Discussion. Results of 11 biotests on different fractionation levels of the samples were described and discussed with regard to the occurrence of contaminants and their toxic potentials. Polychlorinated biphenyls, polycyclic aromatic hydrocarbons, quinones, brominated indoles and brominated phenols were in the focus of interest. A biotest index was constructed to compare the toxic responses in the samples and to group the biotest results. (orig.)

  8. The occurrence of waterfowl in the biotest basin at the Forsmark nuclear power plant, Sweden, 1981-1984

    International Nuclear Information System (INIS)

    Sandstroem, U.

    1985-01-01

    During the period Sep 1981 to Aug 1984 a monthly census was taken of waterfowl in the Biotest basin and its surroundings at Forsmark, as well as in a reference area in the region. During the same period the staff of the Biotest basin made weekly censuses of the basin. The aim of the censuses was to establish if there was any increase in the number of waterfowl in the Biotest basin and its surroundings caused by the discharge of cooling water from the two nuclear power reactors that are in operation in Forsmark. Seventeen waterfowl species were observed in the area during the period studied. Of these species five were regularly observed viz.: the Mute Swan (Cygnus olor), the Mallard (Anas plathyryncos), the Tufted Duck (Aythya fuligula), the Goldeneye (Bucephala clangula) and the Goosander (Mergus merganser). The first four species were generally found in low numbers in the Biotest basin and its surroundings, as well as in the reference area. This implies that the Biotest basin and its surroundings has not become an area of importance during the winter for waterfowl, with one exception: the Goosander. The Goosander showed an increasing population growth in the Biotest basin and its surroundings during the studied period with a maximum average in in the basin during the last winter. As a result, the size of the Goosander population may affect the number of small fish in the Biotest basin. (author)

  9. Detection of HBsAg and Anti HBc on donors of a blood bank by IRMA and ELISA methods

    International Nuclear Information System (INIS)

    Freire Martinez, D.Y.

    1985-10-01

    Comparative evaluation of two methods, Immunoradiometric Assay (IRMA) and Enzyme Immunoassay (ELISA), for detecting HBsAg and Anti HBc was made for determining which is the most advantageous and reliable. The study was made on 300 donors of the Hospital San Juan de Dios Blood Bank. In comparison with the reference method (IRMA), ELISA shows 91.67% of sensitivity. The Anti HBc detection by IRMA is more reliable than the HBsAg detection by IRMA and ELISA for determining the carrier state

  10. The biotest basin of the Forsmark nuclear power plant, Sweden. An experiment on the ecosystem level

    International Nuclear Information System (INIS)

    Grimaas, U.

    1979-01-01

    Biotope models of various sizes and enclosed waters in connection with radionuclide release constitute important tools for radioecological experiments, representing an intermediate step between field and laboratory conditions. The biotest basin at Forsmark is especially constructed for investigations on the effects of radioactivity and heat on a brackish water ecosystem. The basin encloses a water area of 1km 2 in the outer archipelago of the region and is fed with cooling water and released radionuclides by a discharge tunnel. The quantities of the discharges into the basin are adjustable. The biotest experiment permits a quantification of the retention and transport of radionuclides at the various trophic levels. Of special value is the possibility to work with known populations of fish. The approach has the advantage of experimental ecology - the control of important parameters - under the impact of all environmental factors in a complete ecosystem. (author)

  11. Macrofauna on rocky substrates in the Forsmark biotest basin. March 1984 - March 1985

    International Nuclear Information System (INIS)

    Snoeijs, P.; Mo, K.

    1987-09-01

    The Forsmark biotest basin, situated on the Swedish east coast, is an artificial offshore brackish lake, through which the cooling water is channelled from the Forsmark nuclear power plant to the Bothnian Sea. The biotest basin is up to 10 0 C warmer than the sea surrounding it, and has no ice cover in winter. There is an artificial, fast current in a large part of the basin. Macrofauna on stones in the hydrolittoral belt was sampled at 11 sites in- and outside the basin every third week during one year. The numbers of individuals per m 2 for each taxon were counted. Diversity indices and dominance-diversity curves were computed for each site on the basis of pooled data for the cold season, and for the rest of the year. In total 66 taxa were distinguished in the species lists, of which 3 are sessile, the rest free-living. (orig./DG)

  12. THE USE OF CHLOROPHYLL FLUORESCENCE «a» FOR BIOTESTING OF THE AQUATIC ENVIRONMENT

    Directory of Open Access Journals (Sweden)

    V. A. Osipov

    2012-01-01

    Full Text Available The impact on marine algae Thalassiosiraweisflogii, Pseudo-nitzshiadelicatissima of copper sulfate, chloride of mercury, methylmercury were studied. Found a sharp increase sensitivity FS 2 of microalgae cultures and natural phytoplankton to salts of heavy metals in the conditions of the light of the stress that is associated with inhibition of protein synthetic reactions. Conclusions are made about the prospects of the use of fluorescence of chlorophyll "a" for biotesting.

  13. Hydrodynamic chromatography coupled to single-particle ICP-MS for the simultaneous characterization of AgNPs and determination of dissolved Ag in plasma and blood of burn patients.

    Science.gov (United States)

    Roman, Marco; Rigo, Chiara; Castillo-Michel, Hiram; Munivrana, Ivan; Vindigni, Vincenzo; Mičetić, Ivan; Benetti, Federico; Manodori, Laura; Cairns, Warren R L

    2016-07-01

    Silver nanoparticles (AgNPs) are increasingly used in medical devices as innovative antibacterial agents, but no data are currently available on their chemical transformations and fate in vivo in the human body, particularly on their potential to reach the circulatory system. To study the processes involving AgNPs in human plasma and blood, we developed an analytical method based on hydrodynamic chromatography (HDC) coupled to inductively coupled plasma mass spectrometry (ICP-MS) in single-particle detection mode. An innovative algorithm was implemented to deconvolute the signals of dissolved Ag and AgNPs and to extrapolate a multiparametric characterization of the particles in the same chromatogram. From a single injection, the method provides the concentration of dissolved Ag and the distribution of AgNPs in terms of hydrodynamic diameter, mass-derived diameter, number and mass concentration. This analytical approach is robust and suitable to study quantitatively the dynamics and kinetics of AgNPs in complex biological fluids, including processes such as agglomeration, dissolution and formation of protein coronas. The method was applied to study the transformations of AgNP standards and an AgNP-coated dressing in human plasma, supported by micro X-ray fluorescence (μXRF) and micro X-ray absorption near-edge spectroscopy (μXANES) speciation analysis and imaging, and to investigate, for the first time, the possible presence of AgNPs in the blood of three burn patients treated with the same dressing. Together with our previous studies, the results strongly support the hypothesis that the systemic mobilization of the metal after topical administration of AgNPs is driven by their dissolution in situ. Graphical Abstract Simplified scheme of the combined analytical approach adopted for studying the chemical dynamics of AgNPs in human plasma/blood.

  14. Evaluation of HBsAg and anti-HBc assays in saliva and dried blood spot samples according HIV status.

    Science.gov (United States)

    Flores, Geane Lopes; Cruz, Helena Medina; Potsch, Denise Vigo; May, Silvia Beatriz; Brandão-Mello, Carlos Eduardo; Pires, Marcia Maria Amendola; Pilotto, Jose Henrique; Lewis-Ximenez, Lia Laura; Lampe, Elisabeth; Villar, Livia Melo

    2017-09-01

    Influence of HIV status in HBV markers detection in saliva and dried blood spots (DBS) was not well established. This study aims to evaluate the performance of optimized commercial immunoassay for identifying HBsAg and anti-HBc in saliva and DBS according HIV status. A sum of 535 individuals grouped as HIV + , HBV + , HIV/HBV + and HIV/HBV- were recruited where 347 and 188 were included for HBsAg and anti-HBc evaluation, respectively. Serum, DBS collected in Whatman 903 paper and saliva obtained using salivette device were analyzed using EIA. Increased sample volume and ROC curve analysis for cut off determination were used for DBS and saliva testing. HBsAg detection in saliva and DBS exhibited sensitivities of 80.9% and 85.6% and specificities of 86.8% and 96.3%. Sensitivity of anti-HBc in saliva and DBS were 82.4% and 76.9% and specificities in saliva and DBS were 96.9% and 91.7%. Low sensitivities were observed for HBsAg (62%) and anti-HBc (47%) detection in saliva of HIV/HBV+ individuals. OD values were also lower for HBsAg detection in DBS and saliva of HIV/HBV+ individuals compared to their serum samples. Statistical significance was found for sensitivities in HBsAg detection between saliva and DBS demonstrating high sensitivity for DBS specimens. In conclusion, HIV status or antiretroviral treatment appears to interfere in the performance of HBsAg and anti-HBc detection in DBS and saliva samples using the adapted commercial EIA. Copyright © 2017 Elsevier B.V. All rights reserved.

  15. Radioimmunologic determination of hepatitis B antigen (HBsAG) in selected groups of persons and in special blood preparations

    Energy Technology Data Exchange (ETDEWEB)

    Lipsic, T; Geso, L [Clinic of Haematology and Blood Transfusion, Bratislava (Czechoslovakia)

    1978-06-30

    Presence of HBsAg was investigated by the RIA method in groups: exposed patients, blood donors, medical staff and different plasma preparations, namely: antihaemophilic cryoprotein (AHCp), Fibrinogen, I. Cohn's fraction and PPSB. 1789 samples of serum or converted material (plasma and its fractions) were investigated. In 405 cases AUSRIA-I method was used, the remaining 1384 cases were investigated by AUSRIA-II. Data are tabulated.

  16. A micro-Raman study of live, single red blood cells (RBCs treated with AgNO3 nanoparticles.

    Directory of Open Access Journals (Sweden)

    Aseefhali Bankapur

    Full Text Available Silver nanoparticles (Ag NPs are known to exhibit broad antimicrobial activity. However, such activity continues to raise concerns in the context of the interaction of such NPs with biomolecules. In a physiological environment NPs interact with individual biological cells either by penetrating through the cell membrane or by adhering to the membrane. We have explored the interaction of Ag NPs with single optically-trapped, live erythrocytes (red blood cells, RBCs using Raman Tweezers spectroscopy. Our experiments reveal that Ag NPs induce modifications within an RBC that appear to be irreversible. In particular we are able to identify that the heme conformation in an RBC transforms from the usual R-state (oxy-state to the T-state (deoxy-state. We rationalize our observations by proposing a model for the nanoparticle cytotoxicity pathway when the NP size is larger than the membrane pore size. We propose that the interaction of Ag NPs with the cell surface induces damage brought about by alteration of intracellular pH caused by the blockage of the cell membrane transport.

  17. CONDUCTOMETRY BIOTESTING AS APPLIED TO VALUATION OF THE PRO- AND ANTIBACTERIAL PROPERTIES OF CATOLITES AND ANOLITES

    Directory of Open Access Journals (Sweden)

    V. S. Sibirtsev

    2016-05-01

    Full Text Available The paper deals with technique of the electrical conductivity biotesting as applied to the analysis of pro- and antibacterial activity of catolit and anolit solutions. The tested preparations were received by 25 minute electrolysis processing of 1% NaCl water solution (in cathode space and 1% Na2SO4 water solution (in anode space at 7 A amperage and 28 V voltage. The submitted technique is based on the analysis of change dynamics of impedance electrical conductivity of researched samples, caused by metabolic processes, realized by tested microorganisms in analyzed samples. Application of this technique enabled to show that makeup anolit solution, beginning from concentration equal to 1 vol. %, has a bacteriostatic effect on liquid culture medium with Escherichia coli in the quantity of 104 live cells on 1 ml. At anolit solution concentration more than 5 vol.% its action on the same microorganismes becomes bactericidal. At the same time, makeup catolit solution activates microorganismes vital activity as early as from concentration equal to 5 vol.%. Thus, it is shown, that electrical conductivity biotesting is a sensitive laboratory tool, granting accessible, convenient and informative way to a researcher for valuation of properties of various pro- and anti-infective preparations, as well as the other physico-chemical systems (including rather complex concerning structure and dynamics of its change, capable to act on microorganismes vital activity.

  18. The vegetation in the Biotest basin, Forsmark nuclear power plant, 1984-1986

    International Nuclear Information System (INIS)

    Renstroem, S.; Svensson, Roger; Wigren-Svensson, M.

    1990-01-01

    In order to investigate if and how the vegetation has changed in consequence of the raised temperature in the biotest lake (which is the discharge area for the cooling water from the power plant), investigations of the distribution and production of macroscopic algae and higher vegetation have been carried out since 1974. This report presents the results from the period 1984-1986. The investigations have shown that not only the temperature, but also the absence of ice cover, the water stream through the biotest lake and the reduced exposition caused by the embankment, are of importance for the vegetation in the lake. The vegetation has changed in the following aspects: The area of the shore vegetation has been continuously increasing. In 1982 it was c. 6200 m 2 , 1984 it was c. 9850 m 2 and 1985 c. 11000 m 2 , mainly consisting of Phragmites communis. Most of the shore line is now occupied by vegetation. The standing crop was found to have decreased since the power plants started. 1980 there was 74 g/m 2 dry weight and in 1986 28 g/m 2 . Among the most important species of macroscopic underwater vegetation Chara spp and Potamogeton pectinatus show a decrease of standing crop while Cladophora glomerata and Vaucheria sp have increased since the investigation started. (authors)

  19. [Predictive study of HBsAg in different stages of neonatal venous blood on failure of blocking HBV mother to infant transmission].

    Science.gov (United States)

    Yi, Wei; Li, Ming-Hui; Hu, Yu-Hong; Liu, Feng; Zhang, Yang-Li; Liu, Xue-Jing; Hao, Hong-Xiao; Song, Shu-Jing; Liu, Ying; Li, Xing-Hong; Sun, Ji-Yun; Liu, Min; Cheng, Jun; Xie, Yao

    2011-10-01

    In this study, we discuss the predictive value of different content of HBsAg in different stages of neotal venous blood on failure of blocking mother to infant transmission of HBV. 150 infants born of chronically HBV infected mothers who were positive of both HBsAg and HBeAg and who also had a HBV DNA virus load above 10(5) copies/ml were enrolled. These infants were given hepatitis B virus immune globin (HBIG) 200 IU immediately after birth and were given hepatitis B vaccine 10 or 20 microg at brith, 1 month and 6 months after birth. HBV serological index of these infants were test at birth, 1 month and 7 months after birth respectively. Different content of HBsAg in different stages of neonatal venus blood were analyzed to predict the failure of blocking mother to infant transmission of HBV. 11 infants failed in blocking of HBV mother to infant transmission. The positive rate of HBsAg at birth, 1 month and 7 months after birth were 41.26%, 10.49% and 7.69% respectively, and were 97.90%, 65.73% and 13.29% of HBeAg. The positive predictive value of HBsAg > or = 0.05 and HBsAg > or = 1 IU/ml at birth were 18.64% and 70% respectively, and were 73.33% and 100% one month after birth. Infants with HBsAg > or = 1 IU/ml at birth should be suspicious of failure on blocking HBV mother-to-infant transmission and it should be more credible if the infant has HBsAg > or = 1 IU/ml one month after birth. How to improve the blocking rate of neonates who were positive of HBsAg at birth and one month after birth should be the focus of our future research.

  20. [Comparison and evaluation of the Binax EIA and Biotest EIA urinary antigen kits for detection of Legionella pneumophila antigen in urine samples].

    Science.gov (United States)

    Rastawicki, Waldemar; Rokosz, Natalia; Jagielski, Marek

    2011-01-01

    The Binax and the Biotest urinary antigen kits for detection of L. pneumophila antigen were compared by testing of selected 67 urine samples obtained from EWGLI as reference samples in External Quality Assessment Scheme. Thirty nine were positive with the Binax kit (100% of sensitivity), and 33 were positive with the Biotest (84.6% of sensitivity). The test specificities were 100% for the both kits. It was concluded that the Binax kit was more suitable for the routine diagnosis of Legionella infections than the Biotest kit.

  1. Application of biotests for the determination of soil ecotoxicity after exposure to biodegradable plastics

    Directory of Open Access Journals (Sweden)

    Susanna Sforzini

    2016-10-01

    Full Text Available Biodegradable plastics are mostly applied in packaging materials (e.g. shopping bags, waste collection bags, catering products, and agricultural applications. In this last case, degradation takes place directly in soil where biodegradable plastic products are intentionally left after use (e.g. mulch films for weeds control. Due to the growing volumes of biodegradable polymers and plastics, interest in their environmental safety is increasing and more research is carried out. Some attempt has been made to apply biotests, used in other sectors of environmental sciences, in the assessment of biodegradable plastics safety. In this work, the quality of soils after biodegradation of the bioplastics Mater-Bi has been assessed with a large array of biotests based on model organisms representative of the different trophic levels in the food chains of the edaphic and aquatic ecosystems. Mater-Bi was degraded under controlled conditions for 6 months at a 1% concentration. The selected organisms included bacteria and protozoa (V. fischeri and D. discoideum, respectively, the green alga P. subcapitata, plants (the monocotyledon S. saccharatum and the dicotyledon L. sativum, and invertebrates animals (D. magna, a freshwater crustacean, and the Oligochaeta earthworm E. andrei, using both acute and chronic endpoints. The results of the applied ecotoxicological tests showed that the Mater-Bi materials tested at very high doses did not affect the soil quality. Soil exposed to Mater-Bi has no noxious effects on edaphic organisms; in particular, mono and dicotyledon plants results, indicate that Mater-Bi plastic products are innocuous for agricultural uses. The use of more sensitive chronic endpoints allows to exclude possible effects at population level. This is the first time that such a comprehensive approach is applied to the assessment of possible ecotoxicity effects induced by biodegradable plastics in soil and represents a possible starting point for

  2. Combined radioimmunoassay of HBs-antigen and anti-HBs using the Biotest combRIA-Au kit

    International Nuclear Information System (INIS)

    Kselikova, M.; Novak, J.; Urbankova, J.

    1979-01-01

    Hepatitis B antigen and antibody were determined simultaneously by radioimmunoassay using the Biotest combRIA-Au kit. The results in determining antigens and antibodies in sera with a known content of these substances by this kit nearly equal those of isolated determinations of antigen by the Abbott AUSRIA II-125 kit, and of antibody by the Abbott AUSAB kit, resp., except for a negligible number of sera with a very low content of either antigen or antibody. (author)

  3. Biotests and Biosensors for Ecotoxicology of Metal Oxide Nanoparticles: A Minireview

    Directory of Open Access Journals (Sweden)

    Kaja Kasemets

    2008-08-01

    Full Text Available Nanotechnologies have become a significant priority worldwide. Several manufactured nanoparticles - particles with one dimension less than 100 nm - are increasingly used in consumer products. At nanosize range, the properties of materials differ substantially from bulk materials of the same composition, mostly due to the increased specific surface area and reactivity, which may lead to increased bioavailability and toxicity. Thus, for the assessment of sustainability of nanotechnologies, hazards of manufactured nanoparticles have to be studied. Despite all the above mentioned, the data on the potential environmental effects of nanoparticles are rare. This mini-review is summarizing the emerging information on different aspects of ecotoxicological hazard of metal oxide nanoparticles, focusing on TiO2, ZnO and CuO. Various biotests that have been successfully used for evaluation of ecotoxic properties of pollutants to invertebrates, algae and bacteria and now increasingly applied for evaluation of hazard of nanoparticles at different levels of the aquatic food-web are discussed. Knowing the benefits and potential drawbacks of these systems, a suite of tests for evaluation of environmental hazard of nanoparticles is proposed. Special attention is paid to the influence of particle solubility and to recombinant metal-sensing bacteria as powerful tools for quantification of metal bioavailability. Using recombinant metal-specific bacterial biosensors and multitrophic ecotoxicity assays in tandem will create new scientific knowledge on the respective role of ionic species and of particles in toxicity of metal oxide nanoparticles.

  4. Integrated microfluidic technology for sub-lethal and behavioral marine ecotoxicity biotests

    Science.gov (United States)

    Huang, Yushi; Reyes Aldasoro, Constantino Carlos; Persoone, Guido; Wlodkowic, Donald

    2015-06-01

    Changes in behavioral traits exhibited by small aquatic invertebrates are increasingly postulated as ethically acceptable and more sensitive endpoints for detection of water-born ecotoxicity than conventional mortality assays. Despite importance of such behavioral biotests, their implementation is profoundly limited by the lack of appropriate biocompatible automation, integrated optoelectronic sensors, and the associated electronics and analysis algorithms. This work outlines development of a proof-of-concept miniaturized Lab-on-a-Chip (LOC) platform for rapid water toxicity tests based on changes in swimming patterns exhibited by Artemia franciscana (Artoxkit M™) nauplii. In contrast to conventionally performed end-point analysis based on counting numbers of dead/immobile specimens we performed a time-resolved video data analysis to dynamically assess impact of a reference toxicant on swimming pattern of A. franciscana. Our system design combined: (i) innovative microfluidic device keeping free swimming Artemia sp. nauplii under continuous microperfusion as a mean of toxin delivery; (ii) mechatronic interface for user-friendly fluidic actuation of the chip; and (iii) miniaturized video acquisition for movement analysis of test specimens. The system was capable of performing fully programmable time-lapse and video-microscopy of multiple samples for rapid ecotoxicity analysis. It enabled development of a user-friendly and inexpensive test protocol to dynamically detect sub-lethal behavioral end-points such as changes in speed of movement or distance traveled by each animal.

  5. New 1,2,4-triazine bearing compounds: molecular modeling, synthesis and biotesting

    Directory of Open Access Journals (Sweden)

    Negrutska V. V.

    2009-12-01

    Full Text Available Aim. To enlarge a spectrum of biologically active compounds in the series of the 1,2,4-triazino[5,6-b] [1,4]benzothiazine (1,2,4-TBT derivatives and reveal among them efficient inhibitors of RNA synthesis Methods. The methods of structure optimization of the 3-oxo-1,2,4-TBT by fragment-oriented substitution, the molecular doking of new structures in a virtual target, the rational chemical synthesis of the theoretically predicted compounds and their testing in the system of transcription in vitro. Results. The series of 1,2,4-TBT derivatives with substituents in the benzene and triazine cycles of a base molecule were synthesized. The testing of synthesized compounds in the in vitro transcription system directed by T7 RNA polymerase revealed the structure- and concentration-dependent inhibition of the RNA synthesis by some of these compounds. The experimental and virtual screening data for all investigated compounds have a good correlation. It was found that most effective derivative is the 3-oxo-8-butyl-1,2,4-TBT which completely inhibited transcription at the concentration of 6 mg/ml. Conclusions. The biotesting results allow us to assume that the inhibition of RNA synthesis is caused by binding of the 3-oxo- 8-butyl-1,2,4-TBT to both free RNA polymerase molecules and those including in a transcriptional complex with DNA

  6. Toxicity of triphenyltin and tributyltin to the freshwater mudsnail Potamopyrgus antipodarum in a new sediment biotest.

    Science.gov (United States)

    Duft, Martina; Schulte-Oehlmann, Ulrike; Tillmann, Michaela; Markert, Bernd; Oehlmann, Jörg

    2003-01-01

    The effects of two suspected endocrine-disrupting chemicals, the xeno-androgens triphenyltin (TPT) and tributyltin (TBT), were investigated in a new whole-sediment biotest with the freshwater mudsnail Potamopyrgus antipodarum (Gastropoda, Prosobranchia). Artificial sediments were spiked with seven concentrations, ranging from 10 to 500 microg nominal TPT-Sn/kg dry weight and TBT-Sn/kg dry weight, respectively. We analyzed the responses of the test species after two, four, and eight weeks exposure. For both compounds, P. antipodarum exhibited a sharp decline in the number of embryos sheltered in its brood pouch in a time- and concentration-dependent manner in comparison to the control sediment. The number of new, still unshelled embryos turned out to be the most sensitive parameter. The lowest-observed-effect concentration (LOEC) was equivalent to the lowest administered concentration (10 microg/kg of each test compound) for most parameters and thus no no-observed-effect concentration (NOEC) could be established. The calculation of effect concentrations (EC10) resulted in even lower values for both substances (EC10 after eight weeks for unshelled embryos: 0.03 microg TPT-Sn/kg, EC10 after four weeks for unshelled embryos: 0.98 microg TBT-Sn/kg). Our results indicate that P. antipodarum is highly sensitive to both endocrine disruptors TPT and TBT at environmentally relevant concentrations.

  7. RHIZOtest: A plant-based biotest to account for rhizosphere processes when assessing copper bioavailability

    Energy Technology Data Exchange (ETDEWEB)

    Bravin, Matthieu N., E-mail: matthieu.bravin@cirad.f [INRA, UMR 1222 Eco and Sols (INRA-IRD-SupAgro), Place Viala, F-34060 Montpellier (France); Michaud, Aurelia M.; Larabi, Bourane; Hinsinger, Philippe [INRA, UMR 1222 Eco and Sols (INRA-IRD-SupAgro), Place Viala, F-34060 Montpellier (France)

    2010-10-15

    The ability of the free ion activity model (FIAM), the terrestrial biotic ligand model (TBLM), the diffusive gradients in thin films (DGT) technique and a plant-based biotest, the RHIZOtest, to predict root copper (Cu) concentration in field-grown durum wheat (Triticum turgidum durum L.) was assessed on 44 soils varying in pH (3.9-7.8) and total Cu (32-184 mg kg{sup -1}). None of the methods adequately predicted root Cu concentration, which was mainly correlated with total soil Cu. Results from DGT measurements and even more so FIAM prediction were negatively correlated with soil pH and over-estimated root Cu concentration in acidic soils. TBLM implementation improved numerically FIAM prediction but still failed to predict adequately root Cu concentration as the TBLM formalism did not considered the rhizosphere alkalisation as observed in situ. In contrast, RHIZOtest measurements accounted for rhizosphere alkalisation and were mainly correlated with total soil Cu. - In contrast with physico-chemical methods, RHIZOtest measurement accounted for the rhizosphere alkalisation altering Cu bioavailability to wheat as observed in situ.

  8. Toxicity of Graphene Shells, Graphene Oxide, and Graphene Oxide Paper Evaluated with Escherichia coli Biotests

    Directory of Open Access Journals (Sweden)

    Ludmila V. Efremova

    2015-01-01

    Full Text Available The plate-like graphene shells (GS produced by an original methane pyrolysis method and their derivatives graphene oxide (GO and graphene oxide paper (GO-P were evaluated with luminescent Escherichia coli biotests and additional bacterial-based assays which together revealed the graphene-family nanomaterials’ toxicity and bioactivity mechanisms. Bioluminescence inhibition assay, fluorescent two-component staining to evaluate cell membrane permeability, and atomic force microscopy data showed GO expressed bioactivity in aqueous suspension, whereas GS suspensions and the GO-P surface were assessed as nontoxic materials. The mechanism of toxicity of GO was shown not to be associated with oxidative stress in the targeted soxS::lux and katG::lux reporter cells; also, GO did not lead to significant mechanical disruption of treated bacteria with the release of intracellular DNA contents into the environment. The well-coordinated time- and dose-dependent surface charge neutralization and transport and energetic disorders in the Escherichia coli cells suggest direct membrane interaction, internalization, and perturbation (i.e., “membrane stress” as a clue to graphene oxide’s mechanism of toxicity.

  9. Toxicity of Graphene Shells, Graphene Oxide, and Graphene Oxide Paper Evaluated with Escherichia coli Biotests.

    Science.gov (United States)

    Efremova, Ludmila V; Vasilchenko, Alexey S; Rakov, Eduard G; Deryabin, Dmitry G

    2015-01-01

    The plate-like graphene shells (GS) produced by an original methane pyrolysis method and their derivatives graphene oxide (GO) and graphene oxide paper (GO-P) were evaluated with luminescent Escherichia coli biotests and additional bacterial-based assays which together revealed the graphene-family nanomaterials' toxicity and bioactivity mechanisms. Bioluminescence inhibition assay, fluorescent two-component staining to evaluate cell membrane permeability, and atomic force microscopy data showed GO expressed bioactivity in aqueous suspension, whereas GS suspensions and the GO-P surface were assessed as nontoxic materials. The mechanism of toxicity of GO was shown not to be associated with oxidative stress in the targeted soxS::lux and katG::lux reporter cells; also, GO did not lead to significant mechanical disruption of treated bacteria with the release of intracellular DNA contents into the environment. The well-coordinated time- and dose-dependent surface charge neutralization and transport and energetic disorders in the Escherichia coli cells suggest direct membrane interaction, internalization, and perturbation (i.e., "membrane stress") as a clue to graphene oxide's mechanism of toxicity.

  10. CARBON CYCLES, NITROGEN FIXATION AND THE LEGUME-RHIZOBIA SYMBIOSIS AS SOIL CONTAMINANT BIOTEST SYSTEM

    Directory of Open Access Journals (Sweden)

    Dietrich Werner

    2008-06-01

    Full Text Available The major pools and turnover  rates of the global carbon (C cycles are presented and compared to the human production of CO2  from the burning of fossil fuels (e.g. coal and oil and geothermal  fuels (natural  gases, both categorized as non-renewable energy resources which  in amount  reaches around  6.5 Gigatons C per year. These pools that serve as C-holding stallions  are in the atmosphere,  the land plant biomass, the organic soils carbon, the ocean carbon and the lithosphere. In another related case, the present focus in the area of nitrogen  fixation  is discussed with  data on world  production of grain  legumes  compared  to cereals production and nitrogen  fertilizer use. The focus to understand  the molecular  biology of the legume-rhizobia symbiosis as a major contributor to nitrogen  fixation  is in the areas of signal exchange between  host plants and rhizobia  in the rhizophere including  the nod factor signalling, the infection  and nodule compartmentation and the soils stress factors affecting the symbiosis. The use of the Legume-Rhizobia symbiosis as a biotest system for soil contaminants includes data for cadmium,  arsenate, atrazine,  lindane,  fluoranthene, phenantrene and acenaphthene and also results  on the mechanism,  why the symbiotic system is more sensitive  than test systems with plant growth  parameters.

  11. The potential effect of metallothionein 2A - 5 A/G single nucleotide polymorphism on blood cadmium, lead, zinc and copper levels

    International Nuclear Information System (INIS)

    Kayaalti, Zeliha; Aliyev, Vugar; Soeylemezoglu, Tuelin

    2011-01-01

    Metallothioneins (MTs) are low molecular weight, cysteine-rich, metal-binding proteins. Because of their rich thiol groups, MTs bind to the biologically essential metals and perform these metals' homeostatic regulations; absorb the heavy metals and assist with their transportation and extraction. The aim of this study was to investigate the association between the metallothionein 2A (MT2A) core promoter region - 5 A/G single nucleotide polymorphism (SNP) and Cd, Pb, Zn and Cu levels in the blood samples. MT2A polymorphism was determined by the standard polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique using the 616 blood samples and the genotype frequencies were found as 86.6% homozygote typical (AA), 12.8% heterozygote (AG) and 0.6% homozygote atypical (GG). Metal levels were analyzed by dual atomic absorption spectrophotometer system and the average levels of Cd, Pb, Zn and Cu in the blood samples were 1.69 ± 1.57 ppb, 30.62 ± 14.13 ppb, 0.98 ± 0.49 ppm and 1.04 ± 0.45 ppm, respectively. As a result; highly statistically significant associations were detected between the - 5 A/G core promoter region SNP in the MT2A gene and Cd, Pb and Zn levels (p = 0.004, p = 0.012 and p = 0.002, respectively), but no association was found with Cu level (p = 0.595). Individuals with the GG genotype had statistically lower Zn level and higher Cd and Pb levels in the blood samples than individuals with AA and AG genotypes. This study suggests that having the GG genotype individuals may be more sensitive for the metal toxicity and they should be more careful about protecting their health against the toxic effects of the heavy metals. - Highlights: → MT2A -5A/G SNP has strong effect on the Cd, Pb and Zn levels in the blood. → MT2A GG individuals should be more careful for their health against metal toxicity. → This SNP might be considered as a biomarker for risk of disease related to metals.

  12. The HBsAg Prevalence Among Blood Donors From Eastern Mediterranean and Middle Eastern Countries: A Systematic Review and Meta-Analysis.

    Science.gov (United States)

    Babanejad, Mehran; Izadi, Neda; Najafi, Farid; Alavian, Seyed Moayed

    2016-03-01

    The world health organization (WHO) recommends that all blood donations should be screened for evidence of infections, such as hepatitis B. The present study aimed to determine the prevalence of hepatitis B surface antigen (HBsAg) in blood donors at the eastern Mediterranean region office (EMRO) of the WHO and middle eastern countries. A meta-analysis was carried out based on the results of an electronic literature search of PubMed, Ovid, Scopus, and Google Scholar for articles published from January 1, 2000, to August 31, 2015. In accordance with a significant homogeneity test and a large value of I2, the random effects model was used to aggregate data from the studies and produce the pooled estimates using the "Metan" command. We included 66 eligible studies. The pooled prevalence of HBsAg in blood donors of both EMRO and middle eastern (E and M) countries was 2.03% (95% confidence interval [CI]: 1.79 - 2.26). In addition, the prevalence rates in the EMRO countries was 1.99% (95% CI: 1.84 - 2.14) and 1.62% in the Middle Eastern countries (95% CI: 1.36 - 1.88). The prevalence among blood donors with more than one study was 1.58% in Egypt, 0.58% in Iran, 0.67% in Iraq, 2.84% in Pakistan, 3.02% in Saudi Arabia, 1.68% in Turkey, and 5.05% in Yemen. Based on the WHO classification of hepatitis B virus (HBV) prevalence, the prevalence of HBsAg in blood donors from E and M countries reached an intermediate level. However, there were low prevalence levels in some E and M countries.

  13. Importance of radioimmunoassays (HBsAg, HBsAb and HBcAb) for reducing the risk of hepatitis B transfer by blood

    International Nuclear Information System (INIS)

    Novak, J.; Kselikova, M.

    1979-01-01

    The principles are reported of the radioimmunoanalytical assay of the hepatitis B surface antigen, antibodies against this antigen which constitute immunologically indirect evidence, and antibodies against the nucleus of Dane's particles, which is circumstantial immunological evidence. The results obtained by radioimmunoassay are compared with those obtained by enzyme immunoassay. The results are presented obtained during the investigations of a total of 79 individuals, blood donors, health workers, and haemodialytic patients. In the whole group the hepatitis B surface antigen was proved by radioimmunoassay in 54%, by enzyme immunoassay in 47%; the antibody against the hepatitis B surface antigen in 19%; the antibody against the nucleus of the hepatitis B virus showed the largest proportion 75%. In 6.3% radioimmunoassay showed symptoms all three of hepatitis B, i.e., the surface antigen, the antibody against it, and the antibody against the hepatitis B virus nucleus; the correlation of the three symptoms is shown. The presence of HBsAg, HBsAb, and HBcAb is believed to be a contraindication of blood taking for routine purposes; the disappearance of HBsAg for a longer time may justify the re-inclusion among blood donors; the presence of HBsAb and HBcAb does not preclude the preparation of the plasma from such blood for the production of a specific anti-HBs immunoglobulin. (author)

  14. Construction of a non-enzymatic sensor based on the poly(o-phenylenediamine)/Ag-NPs composites for detecting glucose in blood

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Jinxiang; Wang, Meirong [College of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Environmental Engineering and Monitoring, Yangzhou University, 180 Si–Wang–Ting Road, Yangzhou 225002 (China); Guan, Jun [Clinical Medical College of Yangzhou University, Subei People' s Hospital of Jiangsu Province, Yangzhou 225002 (China); Wang, Chengyin, E-mail: wangcy@yzu.edu.cn [College of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Environmental Engineering and Monitoring, Yangzhou University, 180 Si–Wang–Ting Road, Yangzhou 225002 (China); Wang, Guoxiu [School of Mathematical and Physical Sciences, University of Technology Sydney, City Campus, Broadway, Sydney, NSW 2007 (Australia)

    2017-02-01

    A non-enzymatic glucose sensor, based on the silver nanoparticles (Ag-NPs)/poly (o-phenylenediamine) (PoPD) composites, is developed by the electrochemical polymerization of o-phenylenediamine and electrodeposition of silver nanoparticles on an indium tin oxide electrode. The Ag-NPs/PoPD composites are characterized by atomic force microscopy, scanning electronic microscopy and energy dispersive spectrometer. Under the optimized experimental conditions, the proposed glucose sensor demonstrates a wide linear range from 0.15 to 13 mmol L{sup −1} with a correlation coefficient of 0.998. The proposed glucose sensor can be used to detect glucose in blood sample with a satisfactory result. In addition, the proposed sensor presents the advantages, such as facile preparation, low cost, high sensitivity and fast response time. It also exhibits good anti-interference performance and stability. - Highlights: • A facile AgNPs/PoPD/ITO modified sensor was developed for the first time. • The non-enzymatic sensor can detect glucose in human blood directly with a wide detection range. • This sensor is of rapid response, low cost, high sensitivity, and long-time stability.

  15. The Forsmark biotest basin. An instrument for environmental research. Experiences of large cooling water discharges in Sweden (1969-1993) and research perspectives for the future

    International Nuclear Information System (INIS)

    Snoeijs, P.

    1994-01-01

    This report presents the Biotest basin at Forsmark (Sweden) as an instrument for experimental environmental research, and indicates possibilities for its future use. the basin consists of a 1 km 2 artificial enclosure in the Baltic Sea that receives cooling water discharge from the Forsmark nuclear power plant. Cooling water discharge was initiated in 1980, and since then the basin has been serving as the main Swedish instrument for field studies on the effects of enhanced temperature and low-dose radioactivity on aquatic ecosystems. Environmental effects of large cooling water discharges from power plants to the sea have been studied at other sites in Sweden too, and for the sake of completeness of background information this report provides a survey and an extensive bibliography of all previous research on cooling water discharges in Sweden during the last 25 years. The aim of scientific research in the Biotest basin is to provide an independent academically-based assessment of the effects of the discharges of heat to the aquatic environment and of the pathways of pollutants through the ecosystems. Until now the research has mainly been describing the ecological effects of the cooling water flow through the basin under normal operation of the power plant. In the future it will be possible to manipulate the basin for large field experiments. An important perspective for the future is that of climatic change; the Forsmark Biotest basin provides excellent conditions for field studies on possible biological effects. This includes e.g. temperature effects on basic biological processes (growth, metabolism, reproduction etc.), population genetics, and combination effects of heat and toxic substances. 60 refs, 3 figs, 6 tabs

  16. Blood

    Science.gov (United States)

    ... a reduced production of red blood cells, including: Iron deficiency anemia. Iron deficiency anemia is the most common type of anemia and ... inflammatory bowel disease are especially likely to have iron deficiency anemia. Anemia due to chronic disease. People with chronic ...

  17. Comparison of the sensitivity of the Legionella urinary antigen EIA kits from Binax and Biotest with urine from patients with infections caused by less common serogroups and subgroups of Legionella.

    Science.gov (United States)

    Olsen, C W; Elverdal, P; Jørgensen, C S; Uldum, S A

    2009-07-01

    The detection of urinary antigen is the most widely used method to diagnose Legionnaires' disease (LD), so it is important that these assays have a high sensitivity for the disease. In this study, we compare two kits for their ability to detect urinary antigen in urine samples from patients infected with Legionella species and L. pneumophila sero- and subgroups not considered as the most common causes of LD. Urine samples (n = 33) from 30 culture-proven cases of L. pneumophila serogroup (sg) 1, subgroup non-Pontiac infection, and urine samples (n = 35) from 32 cases of non-L. pneumophila species or non-sg 1 infection were examined using the Binax EIA and Biotest EIA kits. For both groups, the overall diagnostic sensitivity of the Binax kit was significantly better than the sensitivity of the Biotest kits (P < 0.0001). For the non-Pontiac group, the sensitivity was 81.8 and 42.4%, respectively, and for the non-sg1 group, it was 51.4 and 28.6%, respectively. It was concluded that the Binax kit was more suitable for the general diagnosis of LD than the Biotest kit, but we still need urinary antigen detection methods with higher sensitivity for non-sg1 LD.

  18. A novel modified electrode as GC/PPy-AuNPs-rGO/L-Cys/Ag@MUA nanostructure configuration for determination of CCP and CRP antibodies in human blood serum samples.

    Science.gov (United States)

    Babakhanian, Arash; Ehzari, Hosna; Kaki, Samineh; Hamidi, Zohreh

    2015-01-15

    In this work, silver nanoparticles were synthesized and stabilized with 11-mercaptoundecanoateanions to produce a new Ag@MUA core shell structure, and its utilizing for fabrication of a new sensing film. Gold nanoparticles (AuNPs) were electrochemically produced and simultaneously immobilized into the electropolymerized polypyrrole (PPy) film with the reduced graphene oxide (rGO). The Ag@MUA was then grafted to the surface of GC/PPy-AuNPs-rGO film using L-cysteine (L-Cys) linker agent and trifluoromethanesulfonic anhydride (TF2O), at ambient temperature and under the electrode stirring. The characterization of the sensor was studied by scanning electron microscopy, electrochemical impedance spectroscopy, cyclic and square wave voltammetry techniques. The utility of the modified electrode for clinical diagnosis has been successfully demonstrated by the analysis of human blood serums with a certified CRP and CCP content. Thus, the proposed sensor shows simple preparation, accuracy and precision in the analysis of cytochrome c protein (CCP) and C-reactive protein (CRP (with less side interferences. Copyright © 2014 Elsevier B.V. All rights reserved.

  19. In Vitro Characterization and Evaluation of the Cytotoxicity Effects of Nisin and Nisin-Loaded PLA-PEG-PLA Nanoparticles on Gastrointestinal (AGS and KYSE-30), Hepatic (HepG2) and Blood (K562) Cancer Cell Lines.

    Science.gov (United States)

    Goudarzi, Fariba; Asadi, Asadollah; Afsharpour, Maryam; Jamadi, Robab Hassanvand

    2018-05-01

    The aim of this study was an in vitro evaluation and comparison of the cytotoxic effects of free nisin and nisin-loaded PLA-PEG-PLA nanoparticles on gastrointestinal (AGS and KYSE-30), hepatic (HepG2), and blood (K562) cancer cell lines. To create this novel anti-cancer drug delivery system, the nanoparticles were synthesized and then loaded with nisin. Subsequently, their biocompatibility, ability to enter cells, and physicochemical properties, including formation, size, and shape, were studied using hemolysis, fluorescein isothiocyanate (FITC), Fourier transform infrared (FTIR) spectroscopy, dynamic light scattering (DLS), and scanning electron microscopy (SEM), respectively. Then, its loading efficiency and release kinetics were examined to assess the potential impact of this formulation for the nanoparticle carrier candidacy. The cytotoxicities of nisin and nisin-loaded nanoparticles were evaluated by using the MTT and Neutral Red (NR) uptake assays. Detections of the apoptotic cells were done via Ethidium Bromide (EB)/Acridine Orange (AO) staining. The FTIR spectra, SEM images, and DLS graph confirmed the formations of the nanoparticles and nisin-loaded nanoparticles with spherical, distinct, and smooth surfaces and average sizes of 100 and 200 nm, respectively. The loading efficiency of the latter nanoparticles was about 85-90%. The hemolysis test represented their non-cytotoxicities and the FITC images indicated their entrance inside the cells. An increase in the percentage of apoptotic cells was observed through EB/AO staining. These results demonstrated that nisin had a cytotoxic effect on AGS, KYSE-30, HepG2, and K562 cancer cell lines, while the cytotoxicity of nisin-loaded nanoparticles was more than that of the free nisin.

  20. HBsAg d and y subtypes determined by inhibition radio-immunoassay

    Energy Technology Data Exchange (ETDEWEB)

    Wilkinson, R [Border Blood Transfusion Service, East London (South Africa)

    1981-12-01

    An inhibition radioimmunoassay for the detection of HBsAg/d and HBsAg/y antigens is described. A survey of 211 asymptomatic HBsAg positive blood donors showed 190 to be of type HBsAg/d and 3 to be of type HBsAg/y, while the remaining 18 could not be typed. Of 43 patients with acute hepatitis 39 were type HBsAg/d and 4 were type HBsAg/y. The statistically significant (p smaller than 0,01) increase in type HBsAg/y may reflect a changing pattern in offending viral strain with the passage of time.

  1. CYP3A5*3 and ABCB1 61A>G Significantly Influence Dose-adjusted Trough Blood Tacrolimus Concentrations in the First Three Months Post-Kidney Transplantation.

    Science.gov (United States)

    Hu, Rong; Barratt, Daniel T; Coller, Janet K; Sallustio, Benedetta C; Somogyi, Andrew A

    2018-03-30

    Tacrolimus (TAC) is a first-line immunosuppressant used to prevent organ rejection after kidney transplantation. There is large inter-individual variability in its pharmacokinetics. Single nucleotide polymorphisms (SNPs) in genes encoding TAC metabolizing enzymes cytochromes P450 3A4/5 (CYP3A4/5), P-glycoprotein efflux transporter (ABCB1), their expression regulator pregnane X receptor (NR1I2) and CYP3A co-factor cytochrome P450 reductase (POR) have been studied for their effects on tacrolimus disposition. However, except for CYP3A5*3, controversies remain about their roles in predicting dose-adjusted trough blood TAC concentrations (C 0 /D). This study aimed to investigate the effects of ABCB1 (61A>G, 1199G>A, 1236C>T, 2677G>T and 3435C>T), CYP3A4*22, CYP3A5*3, NR1I2 (8055C>T, 63396C>T and -25385C>T) and POR*28 SNPs on TAC C 0 /D. In total, 165 kidney transplant recipients were included in this study. SNPs were genotyped by probe-based real-time polymerase chain reaction. Associations between log-transformed whole blood TAC C 0 /D (measured at 1 and 3 months post-transplant) and genotypes/haplotypes were assessed by linear mixed effects analysis, controlling for age, sex and haematocrit. It was observed that CYP3A5 expressors (*1/*1 + *1/*3) (p = 5.5 × 10 -16 ) and ABCB1 61G allele carriers (p = 0.001) had lower log-transformed TAC C 0 /D (56% and 26% lower geometric mean TAC C 0 /D, respectively) and accounted for approximately 30% and 4%, respectively, of log-transformed TAC C 0 /D variability in the first 3 months post-transplant. In conclusion, CYP3A5*3 is a major, and ABCB1 61A>G is a novel, although minor, genetic factor affecting TAC C 0 /D in kidney transplant recipients. © 2018 Nordic Association for the Publication of BCPT (former Nordic Pharmacological Society).

  2. File list: DNS.Bld.50.AllAg.Polymorphonuclear_leukocytes [Chip-atlas[Archive

    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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  20. Hyperglycemia (High Blood Glucose)

    Medline Plus

    Full Text Available ... Carbohydrate Counting Make Your Carbs Count Glycemic Index Low-Calorie Sweeteners Sugar and Desserts Fitness Exercise & Type ... Checking Your Blood Glucose A1C and eAG Hypoglycemia (Low blood glucose) Hyperglycemia (High blood glucose) Dawn Phenomenon ...

  1. AGS experiments - 1994, 1995, 1996

    Energy Technology Data Exchange (ETDEWEB)

    Depken, J.C.

    1997-01-01

    This report contains the following information on the Brookhaven AGS Accelerator complex: FY 1996 AGS schedule as run; FY 1997 AGS schedule (working copy); AGS beams 1997; AGS experimental area FY 1994 physics program; AGS experimental area FY 1995 physics program; AGS experimental area FY 1996 physics program; AGS experimental area FY 1997 physics program (in progress); a listing of experiments by number; two-phage summaries of each experiment begin here, also ordered by number; listing of publications of AGS experiments begins here; and listing of AGS experimenters begins here.

  2. AGS experiments - 1994, 1995, 1996

    International Nuclear Information System (INIS)

    Depken, J.C.

    1997-01-01

    This report contains the following information on the Brookhaven AGS Accelerator complex: FY 1996 AGS schedule as run; FY 1997 AGS schedule (working copy); AGS beams 1997; AGS experimental area FY 1994 physics program; AGS experimental area FY 1995 physics program; AGS experimental area FY 1996 physics program; AGS experimental area FY 1997 physics program (in progress); a listing of experiments by number; two-phage summaries of each experiment begin here, also ordered by number; listing of publications of AGS experiments begins here; and listing of AGS experimenters begins here

  3. AGS experiments -- 1991, 1992, 1993

    International Nuclear Information System (INIS)

    Depken, J.C.

    1994-04-01

    This report contains: (1) FY 1993 AGS schedule as run; (2) FY 1994--95 AGS schedule; (3) AGS experiments ≥ FY 1993 (as of 30 March 1994); (4) AGS beams 1993; (5) AGS experimental area FY 1991 physics program; (6) AGS experimental area FY 1992 physics program; (7) AGS experimental area FY 1993 physics program; (8) AGS experimental area FY 1994 physics program (planned); (9) a listing of experiments by number; (10) two-page summaries of each experiment; (11) listing of publications of AGS experiments; and (12) listing of AGS experiments

  4. No response to hepatitis B vaccine in infants born to HBsAg(+) mothers is associated to the transplacental transfer of HBsAg.

    Science.gov (United States)

    Wang, Jing; He, Yingli; Jin, Dongfang; Liu, Jinfeng; Zheng, Jie; Yuan, Ningxia; Bai, Yun; Yan, Taotao; Yang, Yuan; Liu, Yong; Zhang, Shulin; Zhao, Yingren; Chen, Tianyan

    2017-08-01

    No or low hepatitis B (HB) vaccine response is more frequent in infants from HBsAg(+) mothers than those from HBsAg(-). Our previous study found temporary positivity of HBsAg in infants from HBsAg(+) mothers. In this study, we hypothesized that HBsAg in infant blunt immune response to standard hepatitis B vaccination. A total of 328 consecutive HBsAg(+) mothers and their offspring were enrolled. Blood samples were taken from mothers and their infants and quantified for HBsAg, anti-HBs titer and HBV DNA load concentration; Placenta samples were collected to stain for HBsAg. First, 6.7% infants (22/328) showed anti-HBs titer lower than 10 mIU/mL after HB vaccination (non-response to HB vaccine). HBsAg(+) newborns showed higher risk of non-response than HBsAg(-) infants (13.0% versus 5.0%, p = 0.016). Infants from high HBsAg titer mothers displayed higher risk of HBsAg positivity at birth than those from low titer mothers (45.3% versus 2.8%, p < 0.001). HBsAg titer in mothers of HBsAg(+) newborns was much higher than mothers of HBsAg(-) newborns (p < 0.001). All those data supported HBsAg can be transferred through placenta. Our hypothesis was further reinforced by immunostaining with specific antibody against HBsAg, a substantial higher prevalence (87.5% versus 30.8%, p = 0.024) and stronger immunostaining (p = 0.008) was demonstrated in HBsAg(+) group comparing with placenta of the HBsAg(-) group. No response to HB vaccine in infants of HBsAg(+) mothers was associated to the transplacental transfer of HBsAg.

  5. The role of Ag precipitates in Cu-12 wt% Ag

    Energy Technology Data Exchange (ETDEWEB)

    Yao, D.W.; Song, L.N. [Department of Materials Science and Engineering, Zhejiang University, Zheda Road No.38, Hangzhou, Zhejiang 310027 (China); Dong, A.P.; Wang, L.T. [China Railway Construction Electrification Bureau Group Co.,Ltd., Beijing 100036 (China); Zhang, L. [School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083 (China); Meng, L., E-mail: mengliang@zju.edu.cn [Department of Materials Science and Engineering, Zhejiang University, Zheda Road No.38, Hangzhou, Zhejiang 310027 (China)

    2012-12-15

    The Cu-12 wt% Ag was prepared to investigate the role of Ag precipitates on the properties of the alloy. Two kinds of heat treatment procedures were adopted to produce different amount of Ag precipitates in the Cu-12 wt% Ag. The microstructure of Ag precipitates was systematically observed by optical microscopy and electron microscopy. The Cu-12 wt% Ag with more Ag precipitates exhibits higher strength and lower electrical conductivity. More Ag precipitates results in more phase interface and less Ag atoms dissolved in Cu matrix. By comparing the strengthening effect and electron scattering effect of phase interface and dissolved Ag atoms, it is conclude that the interface between Cu matrix and Ag precipitates could significantly block dislocation movement and enhance electron scattering in Cu-Ag alloys.

  6. AGS experiments: 1993 - 1994 - 1995

    International Nuclear Information System (INIS)

    Depken, J.C.

    1996-04-01

    This report contains: FY 1995 AGS Schedule as Run; FY 1996-97 AGE Schedule (working copy); AGS Beams 1995; AGS Experimental Area FY 1993 Physics Program; AGS Experimental Area FY 1994 Physics Program; AGS Experimental Area FY 1995 Physics Program; AGS Experimental Area FY 1996 Physics Program (In progress); A listing of experiments by number; Two-page summaries of each experiment begin here, also ordered by number; Listing of publications of AGS experiments begins here; and Listing of AGS experimenters begins here. This is the twelfth edition

  7. AGS experiments: 1993 - 1994 - 1995

    Energy Technology Data Exchange (ETDEWEB)

    Depken, J.C.

    1996-04-01

    This report contains: FY 1995 AGS Schedule as Run; FY 1996-97 AGE Schedule (working copy); AGS Beams 1995; AGS Experimental Area FY 1993 Physics Program; AGS Experimental Area FY 1994 Physics Program; AGS Experimental Area FY 1995 Physics Program; AGS Experimental Area FY 1996 Physics Program (In progress); A listing of experiments by number; Two-page summaries of each experiment begin here, also ordered by number; Listing of publications of AGS experiments begins here; and Listing of AGS experimenters begins here. This is the twelfth edition.

  8. AGS intensity upgrades

    International Nuclear Information System (INIS)

    Roser, T.

    1995-01-01

    After the successful completion of the AGS Booster and several upgrades of the AGS, a new intensity record of 6.3 x 10 13 protons per pulse accelerated to 24 GeV was achieved. The high intensity slow-extracted beam program at the AGS typically serves about five production targets and about eight experiments including three rare Kaon decay experiments. Further intensity upgrades are being discussed that could increase the average delivered beam intensity by up to a factor of four

  9. Arcuate AgRP neurons mediate orexigenic and glucoregulatory actions of ghrelin

    OpenAIRE

    Wang, Qian; Liu, Chen; Uchida, Aki; Chuang, Jen-Chieh; Walker, Angela; Liu, Tiemin; Osborne-Lawrence, Sherri; Mason, Brittany L.; Mosher, Christina; Berglund, Eric D.; Elmquist, Joel K.; Zigman, Jeffrey M.

    2014-01-01

    The hormone ghrelin stimulates eating and helps maintain blood glucose upon caloric restriction. While previous studies have demonstrated that hypothalamic arcuate AgRP neurons are targets of ghrelin, the overall relevance of ghrelin signaling within intact AgRP neurons is unclear. Here, we tested the functional significance of ghrelin action on AgRP neurons using a new, tamoxifen-inducible AgRP-CreERT2 transgenic mouse model that allows spatiotemporally-controlled re-expression of physiologi...

  10. AgSTAR

    Science.gov (United States)

    AgSTAR promotes biogas recovery projects, which generate renewable energy and other beneficial products from the anaerobic digestion of livestock manure and organic wastes while decreasing greenhouse gas emissions from the agriculture sector.

  11. AGS intensity record

    International Nuclear Information System (INIS)

    Bleser, Ed

    1994-01-01

    As flashed in the September issue, this summer the Brookhaven Alternating Gradient Synchrotron (AGS) reached a proton beam intensity of 4.05 x 10 13 protons per puise, claimed as the highest intensity ever achieved in a proton synchrotron. It is, however, only two-thirds of the way to its final goal of 6 x 10 13 . The achievement is the resuit of many years of effort. The Report of the AGS II Task Force, issued in February 1984, laid out a comprehensive programme largely based on a careful analysis of the PS experience at CERN. The AGS plan had two essential components: the construction of a new booster, and major upgrades to the AGS itself.

  12. Tunneling-recombination luminescence between Ag0 and Ag2+ in KCl:AgCl

    International Nuclear Information System (INIS)

    Delbecq, C.J.; Dexter, D.L.; Yuster, P.H.

    1978-01-01

    Appropriate treatment of a KCl:AgCl crystal results in the trapping of electrons as silver atoms, Ag 0 , and positive holes as AgCl 4 2- , Ag 2+ , centers. Optical excitation of Ag 0 in such a crystal at T 0 and Ag 2+ pairs, similar to the Ag 0 -Cl 2 - tunneling-recombination studies we previously reported. We have shown that Ag 2+ centers are involved in the emission process by preferentially orienting the anisotropic Ag 2+ at 6 K by excitation with polarized light and observing that the afterglow is polarized. Upon warming to 50 K, where the preferentially oriented Ag 2+ can change orientation, a strong reversal in the degree of polarization occurs which finally decays to zero. The characteristics of this luminescence can be understood if we assume: (i) a tunneling-recombination mechanism in which the orientation of the electric vector of the emitted radiation depends on the position of the Ag 0 relative to the Ag 2+ and (ii) the tunneling is anisotropic and depends on the location of the Ag 0 relative to the anisotropic Ag 2+ . The latter assumption is based on the tetragonal (d-like) symmetry of the Ag 2+ complex. Good quantitative agreement between theory and experiment has been obtained on the decay kinetics, the degree of polarization, and the polarization reversal

  13. Sn-In-Ag phase equilibria and Sn-In-(Ag)/Ag interfacial reactions

    International Nuclear Information System (INIS)

    Chen Sinnwen; Lee Wanyu; Hsu Chiaming; Yang Chingfeng; Hsu Hsinyun; Wu Hsinjay

    2011-01-01

    Research highlights: → Thermodynamic models of Sn-In and Sn-In-Ag are developed using the CALPHAD approach. → Reaction layer in the Sn-In-(Ag)/Ag couples at 100 deg. C is thinner than those at 25 deg. C, 50 deg. C, and 75 deg. C. → Reactions in the Sn-20 wt%In-2.8 wt%Ag/Ag couples are faster than those in the Sn-20 wt%In/Ag couples. - Abstract: Experimental verifications of the Sn-In and Sn-In-Ag phase equilibria have been conducted. The experimental measurements of phase equilibria and thermodynamic properties are used for thermodynamic modeling by the CALPHAD approach. The calculated results are in good agreement with experimental results. Interfacial reactions in the Sn-In-(Ag)/Ag couples have been examined. Both Ag 2 In and AgIn 2 phases are formed in the Sn-51.0 wt%In/Ag couples reacted at 100 and 150 deg. C, and only the Ag 2 In phase is formed when reacted at 25, 50 and 75 deg. C. Due to the different growth rates of different reaction phases, the reaction layer at 100 deg. C is thinner than those at 25 deg. C, 50 deg. C, and 75 deg. C. In the Sn-20.0 wt%In/Ag couples, the ζ phase is formed at 250 deg. C and ζ/AgIn 2 phases are formed at 125 deg. C. Compared with the Sn-20 wt%In/Ag couples, faster interfacial reactions are observed in the Sn-20.0 wt%In-2.8 wt%Ag/Ag couples, and minor Ag addition to Sn-20 wt%In solder increases the growth rates of the reaction phases.

  14. AGS slow extraction improvements

    International Nuclear Information System (INIS)

    Glenn, J.W.; Smith, G.A.; Sandberg, J.N.; Repeta, L.; Weisberg, H.

    1979-01-01

    Improvement of the straightness of the F5 copper septum increased the AGS slow extraction efficiency from approx. 80% to approx. 90%. Installation of an electrostatic septum at H2O, 24 betatron wavelengths upstream of F5, further improved the extraction efficiency to approx. 97%

  15. AGS Booster prototype magnets

    Energy Technology Data Exchange (ETDEWEB)

    Danby, G.; Jackson, J.; Lee, Y.Y.; Phillips, R.; Brodowski, J.; Jablonski, E.; Keohane, G.; McDowell, B.; Rodger, E.

    1987-03-19

    Prototype magnets have been designed and constructed for two half cells of the AGS Booster. The lattice requires 2.4m long dipoles, each curved by 10/sup 0/. The multi-use Booster injector requires several very different standard magnet cycles, capable of instantaneous interchange using computer control from dc up to 10 Hz.

  16. AGS booster prototype magnets

    International Nuclear Information System (INIS)

    Danby, G.; Jackson, J.; Lee, Y.Y.; Phillips, R.; Brodowski, J.; Jablonski, E.; Keohane, G.; McDowell, B.; Rodger, E.

    1987-01-01

    Prototype magnets have been designed and constructed for two half cells of the AGS Booster. The lattice requires 2.4m long dipoles, each curved by 10 0 . The multi-use Booster injector requires several very different standard magnet cycles, capable of instantaneous interchange using computer control from dc up to 10 Hz

  17. AGS experiments: 1990, 1991, 1992

    International Nuclear Information System (INIS)

    Depken, J.C.

    1993-04-01

    This report contains a description of the following: AGS Experimental Area - High Energy Physics FY 1993 and Heavy Ion Physics FY 1993; Table of Beam Parameters and Fluxes; Experiment Schedule ''as run''; Proposed 1993 Schedule; A listing of experiments by number; Two-page summaries of each experiment begin here, also ordered by number; Publications of AGS Experiments; and List of AGS Experimenters

  18. Symbiotic star AG Dra

    International Nuclear Information System (INIS)

    Ipatov, A.P.; Yudin, B.F.; Moskovskij Gosudarstvennyj Univ.

    1986-01-01

    The results obtained from photometric (in the UBVRJHKLM system) and spectrophotometric (in the range 0.33-0.75 μm) observations of symbiotic star AG Dra are presented. The cool component of this star is a red giant with approximately constant brightness (ΔJ ≤ 0 m .3) classified as K4-K5. This red giant fills it's Roche loble and probably is on the assymptotic giant branch of the HR diagramm. The presence of IR excess in 5 μm associated with radiation of the gaseous envelope with the mass of M≅ 10 -6 M sun have been detected. Observations of AG Dra indicate that growing of the bolometric flux of a hot component is accompanied with decreasing effective temperature. The hot component of the system is probably an accerting red dwarf with the mass M≅ 0.4 M sun and disk accretion of matter of cool star with the rate M >or ∼ 10 -4 M sun year in equatorial region. Increase of accretion rate during the outburst of AG Dra leads to the increase of stellar wind from the red dwarf surface and the decrease of it's effective temperature. The hot component of AG Dra may also be considered as a white Dwarf with luminosity L 3 L sun and R eff >or approx. 0.2 R sun . In this case gravitational energy of accreting matter M > or ∼ 10 -6 M sun / year would be the source of the hot component outbursts. The luminosity between outbursts is determined by energy generation from the burning hydrogen layer source

  19. Application of a newly developed high-sensitivity HBsAg chemiluminescent enzyme immunoassay for hepatitis B patients with HBsAg seroclearance.

    Science.gov (United States)

    Shinkai, Noboru; Matsuura, Kentaro; Sugauchi, Fuminaka; Watanabe, Tsunamasa; Murakami, Shuko; Iio, Etsuko; Ogawa, Shintaro; Nojiri, Shunsuke; Joh, Takashi; Tanaka, Yasuhito

    2013-11-01

    We modified and automated a highly sensitive chemiluminescent enzyme immunoassay (CLEIA) for surface antigen (HBsAg) detection using a combination of monoclonal antibodies, each for a specific epitope of HBsAg, and by improving an earlier conjugation technique. Of 471 hepatitis B virus (HBV) carriers seen in our hospital between 2009 and 2012, 26 were HBsAg seronegative as determined by the Abbott Architect assay. The Lumipulse HBsAg-HQ assay was used to recheck those 26 patients who demonstrated seroclearance by the Abbott Architect assay. The performance of the Lumipulse HBsAg-HQ assay was compared with that of a quantitative HBsAg detection system (Abbott Architect) and the Roche Cobas TaqMan HBV DNA assay (CTM) (lower limit of detection, 2.1 log copies/ml) using blood serum samples from patients who were determined to be HBsAg seronegative by the Abbott Architect assay. Ten patients had spontaneous HBsAg loss. Of 8 patients treated with nucleotide analogues (NAs), two were HBsAg seronegative after stopping lamivudine therapy and 6 were HBsAg seronegative during entecavir therapy. Eight acute hepatitis B (AH) patients became HBsAg seronegative. Of the 26 patients, 16 were HBsAg positive by the Lumipulse HBsAg-HQ assay but negative by the Abbott Architect assay. The differences between the two assays in terms of detectable HBsAg persisted over the long term in the spontaneous loss group (median, 10 months), the NA-treated group (2.5 months), and the AH group (0.5 months). In 9 patients, the Lumipulse HBsAg-HQ assay detected HBsAg when HBV DNA was negative by the CTM assay. HBsAg was also detected by the Lumipulse HBsAg-HQ assay in 4 patients with an anti-HBs concentration of >10 mIU/ml, 3 of whom had no HBsAg escape mutations. The automatic, highly sensitive HBsAg CLEIA Lumipulse HBsAg-HQ is a convenient and precise assay for HBV monitoring.

  20. Ag K- and L3-edge XAFS study on Ag species in Ag/Ga2O3 photocatalysts

    International Nuclear Information System (INIS)

    Yamamoto, M; Yamamoto, N; Yoshida, T; Nomoto, T; Yamamoto, A; Yoshida, H; Yagi, S

    2016-01-01

    Ag loaded Ga 2 O 3 (Ag/Ga 2 O 3 ) shows photocatalytic activity for reduction of CO 2 with water. Ag L 3 -edge XANES and K-edge EXAFS spectra were measured for various Ag/Ga 2 O 3 samples, which suggested that structural and chemical states of Ag species varied with the loading amount of Ag and the preparation method. The Ag species were metallic Ag particles with an AgGaO 2 -like interface structure in the sample with high loading amount of Ag while predominantly Ag metal clusters in the sample with low loading amount of Ag. The XANES feature just above the edge represented the interaction between the Ag species and the Ga 2 O 3 surface, showing that the Ag metal clusters had more electrons in the d -orbitals by interacting with the Ga 2 O 3 surface, which would contribute the high photocatalytic activity. (paper)

  1. AGS experiments -- 1995, 1996 and 1997

    Energy Technology Data Exchange (ETDEWEB)

    Depken, J.C.; Presti, P.L.

    1997-12-01

    This report contains (1) FY 1995 AGS schedule as run; (2) FY 1996 AGS schedule as run; (3) FY 1997 AGS schedule as run; (4) FY 1998--1999 AGS schedule (proposed); (5) AGS beams 1997; (6) AGS experimental area FY 1995 physics program; (7) AGS experimental area FY 1996 physics program; (8) AGS experimental area FY 1997 physics program; (9) AGS experimental area FY 1998--1999 physics program (proposed); (10) a listing of experiments by number; (11) two-page summaries of each experiment, in order by number; and (12) listing of publications of AGS experiments.

  2. AGS experiments - 1995, 1996 and 1997

    International Nuclear Information System (INIS)

    Depken, J.C.; Presti, P.L.

    1997-12-01

    This report contains (1) FY 1995 AGS schedule as run; (2) FY 1996 AGS schedule as run; (3) FY 1997 AGS schedule as run; (4) FY 1998--1999 AGS schedule (proposed); (5) AGS beams 1997; (6) AGS experimental area FY 1995 physics program; (7) AGS experimental area FY 1996 physics program; (8) AGS experimental area FY 1997 physics program; (9) AGS experimental area FY 1998--1999 physics program (proposed); (10) a listing of experiments by number; (11) two-page summaries of each experiment, in order by number; and (12) listing of publications of AGS experiments

  3. AGS polarized H- source

    International Nuclear Information System (INIS)

    Kponou, A.; Alessi, J.G.; Sluyters, T.

    1985-01-01

    The AGS polarized H - source is now operational. During a month-long experimental physics run in July 1984, pulses equivalent to 15 μA x 300 μs (approx. 3 x 10 10 protons) were injected into the RFQ preaccelerator. Beam polarization, measured at 200 MeV, was approx. 75%. After the run, a program to increase the H - yield of the source was begun and significant progress has been made. The H - current is now frequently 20 to 30 μA. A description of the source and some details of our operating experience are given. We also briefly describe the improvement program

  4. AGS superconducting bending magnets

    International Nuclear Information System (INIS)

    Robins, K.E.; Sampson, W.B.; McInturff, A.D.; Dahl, P.F.; Abbatiello, F.; Aggus, J.; Bamberger, J.; Brown, D.; Damm, R.; Kassner, D.; Lasky, C.; Schlafke, A.

    1976-01-01

    Four large aperture superconducting bending magnets are being built for use in the experimental beams at the AGS. Each of these magnets is 2.5 m long and has a room temperature aperture of 20 cm. The magnets are similar in design to the dipoles being developed for ISABELLE and employ a low temperature iron core. Results are presented on the ''training'' behavior of the magnets and a comparison will be made with the smaller aperture versions of this design. The magnet field measurements include end fields and leakage fields as well as the harmonic components of the straight section of the magnet

  5. File list: Oth.Bld.50.AllAg.Plasmablasts [Chip-atlas[Archive

    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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  8. File list: His.Bld.05.AllAg.Plasma_Cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.05.AllAg.Plasma_Cells hg19 Histone Blood Plasma Cells SRX203392,SRX203393 h...ttp://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Bld.05.AllAg.Plasma_Cells.bed ...

  9. File list: InP.Bld.05.AllAg.Plasma_Cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Bld.05.AllAg.Plasma_Cells hg19 Input control Blood Plasma Cells SRX203398,SRX20...3397 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Bld.05.AllAg.Plasma_Cells.bed ...

  10. File list: InP.Bld.20.AllAg.Plasma_Cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Bld.20.AllAg.Plasma_Cells hg19 Input control Blood Plasma Cells SRX203397,SRX20...3398 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Bld.20.AllAg.Plasma_Cells.bed ...

  11. File list: Oth.Bld.05.AllAg.Plasmablasts [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.05.AllAg.Plasmablasts mm9 TFs and others Blood Plasmablasts SRX1131940,SRX2...45510,SRX1131943,SRX1131942,SRX1131938,SRX1131939 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Bld.05.AllAg.Plasmablasts.bed ...

  12. File list: His.Bld.50.AllAg.Plasmacytoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.50.AllAg.Plasmacytoma mm9 Histone Blood Plasmacytoma SRX317647,SRX317646,SR...SRX317627,SRX317629,SRX317630,SRX317628,SRX317642,SRX317625 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/His.Bld.50.AllAg.Plasmacytoma.bed ...

  13. File list: His.Bld.10.AllAg.Neutrophils [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.10.AllAg.Neutrophils hg19 Histone Blood Neutrophils SRX956551,SRX956548,SRX...956545,SRX956544,SRX956550,SRX956547 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Bld.10.AllAg.Neutrophils.bed ...

  14. File list: His.Bld.50.AllAg.Neutrophils [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.50.AllAg.Neutrophils hg19 Histone Blood Neutrophils SRX956551,SRX956548,SRX...956545,SRX956544,SRX956547,SRX956550 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Bld.50.AllAg.Neutrophils.bed ...

  15. File list: InP.Bld.50.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Bld.50.AllAg.PBMC hg19 Input control Blood PBMC SRX151954,SRX099233,SRX099232,S...RX095365,SRX037434 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Bld.50.AllAg.PBMC.bed ...

  16. File list: His.Bld.05.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.05.AllAg.PBMC hg19 Histone Blood PBMC SRX095379,SRX095370,SRX095374,SRX0953...68,SRX037431,SRX037433,SRX037432,SRX037430 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Bld.05.AllAg.PBMC.bed ...

  17. File list: ALL.Bld.50.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.50.AllAg.PBMC hg19 All antigens Blood PBMC SRX151944,SRX151946,SRX151953,SR...,SRX833338,SRX037432,SRX095365,SRX151950,SRX037431,SRX151951,SRX037434,SRX037433,SRX037430 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Bld.50.AllAg.PBMC.bed ...

  18. File list: InP.Bld.05.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Bld.05.AllAg.PBMC hg19 Input control Blood PBMC SRX151954,SRX099233,SRX099232,S...RX095365,SRX037434 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Bld.05.AllAg.PBMC.bed ...

  19. File list: Oth.Bld.50.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.50.AllAg.PBMC hg19 TFs and others Blood PBMC SRX151944,SRX151946,SRX151953,...9,SRX151948,SRX151950,SRX151951 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Bld.50.AllAg.PBMC.bed ...

  20. File list: Oth.Bld.20.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.20.AllAg.PBMC hg19 TFs and others Blood PBMC SRX151944,SRX151946,SRX151953,...0,SRX099231,SRX151949,SRX151948 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Bld.20.AllAg.PBMC.bed ...

  1. File list: Oth.Bld.10.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.10.AllAg.PBMC hg19 TFs and others Blood PBMC SRX151953,SRX151944,SRX151946,...0,SRX151951,SRX099230,SRX099231 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Bld.10.AllAg.PBMC.bed ...

  2. File list: NoD.Bld.10.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Bld.10.AllAg.PBMC hg19 No description Blood PBMC SRX833334,SRX833332,SRX833335,...SRX833337,SRX833330,SRX833329,SRX833331,SRX833333,SRX833336,SRX833340,SRX833339,SRX833338 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Bld.10.AllAg.PBMC.bed ...

  3. File list: NoD.Bld.05.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Bld.05.AllAg.PBMC hg19 No description Blood PBMC SRX833333,SRX833334,SRX833332,...SRX833335,SRX833331,SRX833336,SRX833337,SRX833330,SRX833329,SRX833340,SRX833338,SRX833339 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Bld.05.AllAg.PBMC.bed ...

  4. File list: NoD.Bld.50.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Bld.50.AllAg.PBMC hg19 No description Blood PBMC SRX833337,SRX833329,SRX833330,...SRX833332,SRX833333,SRX833331,SRX833334,SRX833335,SRX833336,SRX833340,SRX833339,SRX833338 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Bld.50.AllAg.PBMC.bed ...

  5. File list: Oth.Bld.05.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.05.AllAg.PBMC hg19 TFs and others Blood PBMC SRX099230,SRX099231,SRX151953,...9,SRX151942,SRX151950,SRX151951 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Bld.05.AllAg.PBMC.bed ...

  6. File list: InP.Bld.10.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Bld.10.AllAg.PBMC hg19 Input control Blood PBMC SRX151954,SRX099233,SRX099232,S...RX095365,SRX037434 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Bld.10.AllAg.PBMC.bed ...

  7. File list: NoD.Bld.20.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available NoD.Bld.20.AllAg.PBMC hg19 No description Blood PBMC SRX833337,SRX833329,SRX833330,...SRX833332,SRX833333,SRX833331,SRX833334,SRX833335,SRX833336,SRX833340,SRX833339,SRX833338 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/NoD.Bld.20.AllAg.PBMC.bed ...

  8. File list: ALL.Bld.05.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.05.AllAg.PBMC hg19 All antigens Blood PBMC SRX099230,SRX099231,SRX151953,SR...,SRX833335,SRX833331,SRX833336,SRX833337,SRX833330,SRX833329,SRX833340,SRX833338,SRX833339 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Bld.05.AllAg.PBMC.bed ...

  9. File list: His.Bld.20.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.20.AllAg.PBMC hg19 Histone Blood PBMC SRX095374,SRX095370,SRX037433,SRX0374...31,SRX095379,SRX037432,SRX095368,SRX037430 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Bld.20.AllAg.PBMC.bed ...

  10. File list: ALL.Bld.20.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.20.AllAg.PBMC hg19 All antigens Blood PBMC SRX151944,SRX151946,SRX151953,SR...,SRX833333,SRX833331,SRX833334,SRX833335,SRX833336,SRX833340,SRX833339,SRX833338,SRX037430 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Bld.20.AllAg.PBMC.bed ...

  11. File list: His.Bld.50.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.50.AllAg.PBMC hg19 Histone Blood PBMC SRX095374,SRX095370,SRX095379,SRX0953...68,SRX037432,SRX037431,SRX037433,SRX037430 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Bld.50.AllAg.PBMC.bed ...

  12. File list: ALL.Bld.10.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.10.AllAg.PBMC hg19 All antigens Blood PBMC SRX151953,SRX151944,SRX151946,SR...,SRX833337,SRX833330,SRX833329,SRX833331,SRX833333,SRX833336,SRX833340,SRX833339,SRX833338 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Bld.10.AllAg.PBMC.bed ...

  13. File list: InP.Bld.50.AllAg.Plasma_Cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Bld.50.AllAg.Plasma_Cells hg19 Input control Blood Plasma Cells SRX203397,SRX20...3398 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Bld.50.AllAg.Plasma_Cells.bed ...

  14. File list: Oth.Bld.20.AllAg.Plasmablasts [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.20.AllAg.Plasmablasts mm9 TFs and others Blood Plasmablasts SRX1131940,SRX2...45510,SRX1131942,SRX1131943,SRX1131938,SRX1131939 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Bld.20.AllAg.Plasmablasts.bed ...

  15. File list: Oth.Bld.50.AllAg.Plasma_Cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.50.AllAg.Plasma_Cells hg19 TFs and others Blood Plasma Cells SRX203389,SRX2...03388,SRX203391,SRX203395,SRX203387,SRX203394,SRX203390 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Bld.50.AllAg.Plasma_Cells.bed ...

  16. File list: ALL.Bld.20.AllAg.Plasmacytoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.20.AllAg.Plasmacytoma mm9 All antigens Blood Plasmacytoma SRX317647,SRX3176...7632,SRX317640,SRX317627,SRX317629,SRX317630,SRX317628,SRX317642,SRX317625 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Bld.20.AllAg.Plasmacytoma.bed ...

  17. File list: ALL.Bld.10.AllAg.Plasmablasts [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.10.AllAg.Plasmablasts mm9 All antigens Blood Plasmablasts SRX245511,SRX1131...1938,SRX1131939,SRX1131947 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Bld.10.AllAg.Plasmablasts.bed ...

  18. File list: His.Bld.10.AllAg.Plasmacytoma [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.10.AllAg.Plasmacytoma mm9 Histone Blood Plasmacytoma SRX317641,SRX317647,SR...SRX317629,SRX317627,SRX317628,SRX317642,SRX317630,SRX317625 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/His.Bld.10.AllAg.Plasmacytoma.bed ...

  19. File list: Unc.Bld.10.AllAg.Plasmablasts [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Bld.10.AllAg.Plasmablasts hg19 Unclassified Blood Plasmablasts SRX1164304,SRX11...64307,SRX1164306,SRX1164308,SRX1164305,SRX1164303 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Bld.10.AllAg.Plasmablasts.bed ...

  20. File list: His.Bld.50.AllAg.Neutrophils [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.50.AllAg.Neutrophils mm9 Histone Blood Neutrophils SRX760581,SRX760584,SRX7...60583,SRX760580,SRX760582 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/His.Bld.50.AllAg.Neutrophils.bed ...

  1. File list: His.Bld.20.AllAg.Neutrophils [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.20.AllAg.Neutrophils mm9 Histone Blood Neutrophils SRX760584,SRX760581,SRX7...60583,SRX760580,SRX760582 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/His.Bld.20.AllAg.Neutrophils.bed ...

  2. File list: Unc.Bld.50.AllAg.Neutrophils [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Bld.50.AllAg.Neutrophils hg19 Unclassified Blood Neutrophils SRX956546,SRX95655...2,SRX956549 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Bld.50.AllAg.Neutrophils.bed ...

  3. File list: ALL.Bld.10.AllAg.Neutrophils [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.10.AllAg.Neutrophils hg19 All antigens Blood Neutrophils SRX956551,SRX95654...8,SRX956545,SRX956544,SRX956550,SRX956552,SRX956549,SRX956546,SRX956547 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Bld.10.AllAg.Neutrophils.bed ...

  4. File list: ALL.Bld.20.AllAg.Neutrophils [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.20.AllAg.Neutrophils mm9 All antigens Blood Neutrophils SRX760584,SRX760581...,SRX760583,SRX760580,SRX801903,SRX760582 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Bld.20.AllAg.Neutrophils.bed ...

  5. File list: Unc.Bld.05.AllAg.Neutrophils [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Bld.05.AllAg.Neutrophils hg19 Unclassified Blood Neutrophils SRX956546,SRX95655...2,SRX956549 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Bld.05.AllAg.Neutrophils.bed ...

  6. File list: His.Bld.10.AllAg.Neutrophils [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.10.AllAg.Neutrophils mm9 Histone Blood Neutrophils SRX760584,SRX760583,SRX7...60581,SRX760582,SRX760580 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/His.Bld.10.AllAg.Neutrophils.bed ...

  7. File list: Unc.Bld.10.AllAg.Neutrophils [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Bld.10.AllAg.Neutrophils hg19 Unclassified Blood Neutrophils SRX956552,SRX95654...9,SRX956546 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Bld.10.AllAg.Neutrophils.bed ...

  8. File list: His.Bld.05.AllAg.Neutrophils [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.05.AllAg.Neutrophils hg19 Histone Blood Neutrophils SRX956551,SRX956548,SRX...956545,SRX956544,SRX956550,SRX956547 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Bld.05.AllAg.Neutrophils.bed ...

  9. File list: His.Bld.05.AllAg.Neutrophils [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.05.AllAg.Neutrophils mm9 Histone Blood Neutrophils SRX760584,SRX760581,SRX7...60583,SRX760582,SRX760580 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/His.Bld.05.AllAg.Neutrophils.bed ...

  10. File list: ALL.Bld.50.AllAg.Neutrophils [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.50.AllAg.Neutrophils mm9 All antigens Blood Neutrophils SRX760581,SRX760584...,SRX760583,SRX760580,SRX801903,SRX760582 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Bld.50.AllAg.Neutrophils.bed ...

  11. File list: InP.Bld.05.AllAg.Dendritic_Cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Bld.05.AllAg.Dendritic_Cells mm9 Input control Blood Dendritic Cells SRX885956,...76,SRX122481,SRX667880,SRX667874,SRX667878 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Bld.05.AllAg.Dendritic_Cells.bed ...

  12. File list: Unc.Bld.50.AllAg.Dendritic_Cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Bld.50.AllAg.Dendritic_Cells hg19 Unclassified Blood Dendritic Cells SRX818200,...203,SRX818202,SRX818182,SRX818195,SRX818196,SRX818181 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Bld.50.AllAg.Dendritic_Cells.bed ...

  13. File list: InP.Bld.10.AllAg.Dendritic_Cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Bld.10.AllAg.Dendritic_Cells hg19 Input control Blood Dendritic Cells SRX627429...,SRX627427 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Bld.10.AllAg.Dendritic_Cells.bed ...

  14. File list: Unc.Bld.20.AllAg.Dendritic_Cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Unc.Bld.20.AllAg.Dendritic_Cells hg19 Unclassified Blood Dendritic Cells SRX818200,...189,SRX818202,SRX818182,SRX818195,SRX818196,SRX818181 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Unc.Bld.20.AllAg.Dendritic_Cells.bed ...

  15. File list: ALL.Bld.05.AllAg.Lymphoma,_B-Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.05.AllAg.Lymphoma,_B-Cell hg19 All antigens Blood Lymphoma, B-Cell SRX37034...351,SRX092415,SRX370350,SRX092417,SRX092414 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Bld.05.AllAg.Lymphoma,_B-Cell.bed ...

  16. File list: ALL.Bld.50.AllAg.Lymphoma,_B-Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.50.AllAg.Lymphoma,_B-Cell hg19 All antigens Blood Lymphoma, B-Cell SRX37034...349,SRX370351,SRX370345,SRX092415,SRX092417 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Bld.50.AllAg.Lymphoma,_B-Cell.bed ...

  17. File list: His.Bld.10.AllAg.Lymphoma,_B-Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.10.AllAg.Lymphoma,_B-Cell hg19 Histone Blood Lymphoma, B-Cell SRX370346,SRX...370340,SRX370344,SRX370342,SRX370348,SRX370350 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Bld.10.AllAg.Lymphoma,_B-Cell.bed ...

  18. File list: His.Bld.50.AllAg.Lymphoma,_B-Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.50.AllAg.Lymphoma,_B-Cell hg19 Histone Blood Lymphoma, B-Cell SRX370346,SRX...370350,SRX370344,SRX370342,SRX370348,SRX370340 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Bld.50.AllAg.Lymphoma,_B-Cell.bed ...

  19. File list: Oth.Bld.50.AllAg.Lymphoma,_B-Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.50.AllAg.Lymphoma,_B-Cell hg19 TFs and others Blood Lymphoma, B-Cell SRX092...416,SRX092414 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Bld.50.AllAg.Lymphoma,_B-Cell.bed ...

  20. File list: Oth.Bld.20.AllAg.Lymphoma,_B-Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.20.AllAg.Lymphoma,_B-Cell hg19 TFs and others Blood Lymphoma, B-Cell SRX092...416,SRX092414 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Bld.20.AllAg.Lymphoma,_B-Cell.bed ...

  1. File list: Oth.Bld.05.AllAg.Lymphoma,_B-Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.05.AllAg.Lymphoma,_B-Cell hg19 TFs and others Blood Lymphoma, B-Cell SRX092...416,SRX092414 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Bld.05.AllAg.Lymphoma,_B-Cell.bed ...

  2. File list: ALL.Bld.10.AllAg.Lymphoma,_B-Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.10.AllAg.Lymphoma,_B-Cell hg19 All antigens Blood Lymphoma, B-Cell SRX37034...416,SRX092414,SRX370350,SRX092417,SRX092415 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Bld.10.AllAg.Lymphoma,_B-Cell.bed ...

  3. File list: His.Bld.05.AllAg.Lymphoma,_B-Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.05.AllAg.Lymphoma,_B-Cell hg19 Histone Blood Lymphoma, B-Cell SRX370346,SRX...370344,SRX370340,SRX370342,SRX370348,SRX370350 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/His.Bld.05.AllAg.Lymphoma,_B-Cell.bed ...

  4. File list: Oth.Bld.10.AllAg.Lymphoma,_B-Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  5. File list: ALL.Bld.20.AllAg.Lymphoma,_B-Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  6. File list: His.Bld.20.AllAg.Lymphoma,_B-Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  7. File list: ALL.Bld.20.AllAg.Pro-B_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.20.AllAg.Pro-B_cells mm9 All antigens Blood Pro-B cells SRX1553109,SRX15531...3,SRX1143907 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/ALL.Bld.20.AllAg.Pro-B_cells.bed ...

  8. File list: InP.Bld.50.AllAg.Lymphoid_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  9. File list: ALL.Bld.20.AllAg.Lymphoid_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  10. File list: ALL.Bld.10.AllAg.Naive_T_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  11. File list: ALL.Bld.50.AllAg.Naive_T_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  12. File list: ALL.Bld.05.AllAg.Lymphoid_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  13. File list: Oth.Bld.10.AllAg.Naive_T_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  14. File list: InP.Bld.05.AllAg.Lymphoid_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Bld.05.AllAg.Lymphoid_cells mm9 Input control Blood Lymphoid cells SRX971601,SR...X021894 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/InP.Bld.05.AllAg.Lymphoid_cells.bed ...

  15. File list: InP.Bld.20.AllAg.PBMC [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  16. File list: InP.Bld.50.AllAg.CD20+ [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Bld.50.AllAg.CD20+ hg19 Input control Blood CD20+ SRX186673,SRX199873,SRX189978...,SRX199853,SRX189980 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Bld.50.AllAg.CD20+.bed ...

  17. File list: InP.Bld.10.AllAg.CH12 [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  18. File list: InP.Bld.05.AllAg.RAJI [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  19. File list: InP.Bld.50.AllAg.Th17 [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  20. File list: DNS.Bld.05.AllAg.Carcinoma,_Squamous_Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Bld.05.AllAg.Carcinoma,_Squamous_Cell mm9 DNase-seq Blood Carcinoma, Squamous C...ell http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/DNS.Bld.05.AllAg.Carcinoma,_Squamous_Cell.bed ...

  1. File list: Oth.Bld.05.AllAg.Carcinoma,_Squamous_Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.05.AllAg.Carcinoma,_Squamous_Cell mm9 TFs and others Blood Carcinoma, Squam...ous Cell http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/Oth.Bld.05.AllAg.Carcinoma,_Squamous_Cell.bed ...

  2. File list: ALL.Bld.50.AllAg.Carcinoma,_Squamous_Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  3. File list: ALL.Bld.05.AllAg.Carcinoma,_Squamous_Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  4. File list: Oth.Bld.20.AllAg.Carcinoma,_Squamous_Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  5. File list: Unc.Bld.10.AllAg.Carcinoma,_Squamous_Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  6. File list: Unc.Bld.05.AllAg.Carcinoma,_Squamous_Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  7. File list: Pol.Bld.50.AllAg.Carcinoma,_Squamous_Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  8. File list: ALL.Bld.10.AllAg.Carcinoma,_Squamous_Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  9. File list: DNS.Bld.50.AllAg.Carcinoma,_Squamous_Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available DNS.Bld.50.AllAg.Carcinoma,_Squamous_Cell mm9 DNase-seq Blood Carcinoma, Squamous C...ell http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/DNS.Bld.50.AllAg.Carcinoma,_Squamous_Cell.bed ...

  10. File list: ALL.Bld.20.AllAg.Carcinoma,_Squamous_Cell [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  11. File list: ALL.Bld.05.AllAg.CCRF-CEM [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  12. File list: ALL.Bld.50.AllAg.CCRF-CEM [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  13. File list: InP.Bld.05.AllAg.CCRF-CEM [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  14. File list: InP.Bld.10.AllAg.CCRF-CEM [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Bld.10.AllAg.CCRF-CEM hg19 Input control Blood CCRF-CEM SRX728791,SRX107305,SRX...107290 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Bld.10.AllAg.CCRF-CEM.bed ...

  15. File list: InP.Bld.50.AllAg.CCRF-CEM [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available InP.Bld.50.AllAg.CCRF-CEM hg19 Input control Blood CCRF-CEM SRX107305,SRX107290,SRX...728791 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/InP.Bld.50.AllAg.CCRF-CEM.bed ...

  16. File list: ALL.Bld.20.AllAg.CCRF-CEM [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.20.AllAg.CCRF-CEM hg19 All antigens Blood CCRF-CEM SRX728787,SRX728788,SRX7...X107296,SRX728791,SRX107290,SRX107295 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Bld.20.AllAg.CCRF-CEM.bed ...

  17. File list: ALL.Bld.10.AllAg.CCRF-CEM [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available ALL.Bld.10.AllAg.CCRF-CEM hg19 All antigens Blood CCRF-CEM SRX728787,SRX728788,SRX7...X107286,SRX107305,SRX107295,SRX107290 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/ALL.Bld.10.AllAg.CCRF-CEM.bed ...

  18. File list: Oth.Bld.50.AllAg.RPMI_8402 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.50.AllAg.RPMI_8402 hg19 TFs and others Blood RPMI 8402 SRX158110,SRX158111,...SRX158106,SRX158113,SRX158109,SRX158105,SRX158108,SRX158107,SRX212645 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Bld.50.AllAg.RPMI_8402.bed ...

  19. File list: Oth.Bld.05.AllAg.RPMI_8402 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.05.AllAg.RPMI_8402 hg19 TFs and others Blood RPMI 8402 SRX158106,SRX158111,...SRX158108,SRX158107,SRX158110,SRX158105,SRX158113,SRX158109,SRX212645 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Bld.05.AllAg.RPMI_8402.bed ...

  20. File list: Oth.Bld.10.AllAg.RPMI_8402 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.10.AllAg.RPMI_8402 hg19 TFs and others Blood RPMI 8402 SRX158108,SRX158107,...SRX158106,SRX158111,SRX158113,SRX158110,SRX158109,SRX212645,SRX158105 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Bld.10.AllAg.RPMI_8402.bed ...

  1. File list: Oth.Bld.20.AllAg.RPMI_8402 [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.20.AllAg.RPMI_8402 hg19 TFs and others Blood RPMI 8402 SRX158107,SRX158106,...SRX158110,SRX158108,SRX158111,SRX158113,SRX158109,SRX158105,SRX212645 http://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Bld.20.AllAg.RPMI_8402.bed ...

  2. File list: Oth.Bld.05.AllAg.Naive_T_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available Oth.Bld.05.AllAg.Naive_T_cells hg19 TFs and others Blood Naive T cells SRX1425808 h...ttp://dbarchive.biosciencedbc.jp/kyushu-u/hg19/assembled/Oth.Bld.05.AllAg.Naive_T_cells.bed ...

  3. File list: His.Bld.50.AllAg.Pro-B_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

    Full Text Available His.Bld.50.AllAg.Pro-B_cells mm9 Histone Blood Pro-B cells SRX668836,SRX1184113,SRX...09,SRX759800,SRX1143916,SRX1143902 http://dbarchive.biosciencedbc.jp/kyushu-u/mm9/assembled/His.Bld.50.AllAg.Pro-B_cells.bed ...

  4. File list: His.Bld.20.AllAg.Pro-B_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  5. File list: His.Bld.10.AllAg.Plasma_Cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  6. File list: ALL.Bld.50.AllAg.Lymphoid_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  7. File list: InP.Bld.20.AllAg.Lymphoid_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  8. File list: ALL.Bld.05.AllAg.Naive_T_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  9. File list: His.Bld.05.AllAg.Lymphoid_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  10. File list: His.Bld.20.AllAg.Kidney_Cortex [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  11. File list: Oth.Bld.20.AllAg.Kidney_Cortex [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  12. File list: ALL.Bld.05.AllAg.Kidney_Cortex [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  13. File list: His.Bld.50.AllAg.Kidney_Cortex [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  14. File list: ALL.Bld.10.AllAg.Kidney_Cortex [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  15. File list: InP.Bld.50.AllAg.Kidney_Cortex [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  16. File list: ALL.Bld.10.AllAg.Polymorphonuclear_leukocytes [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  17. File list: His.Bld.20.AllAg.Neutrophils [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  18. File list: His.Bld.10.AllAg.Kidney_Cortex [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  19. File list: Oth.Bld.50.AllAg.Kidney_Cortex [Chip-atlas[Archive

    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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  11. File list: ALL.Bld.20.AllAg.Polymorphonuclear_leukocytes [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  12. Visible light driven photocatalysis and antibacterial activity of AgVO3 and Ag/AgVO3 nanowires

    International Nuclear Information System (INIS)

    Singh, Anamika; Dutta, Dimple P.; Ballal, A.; Tyagi, A.K.; Fulekar, M.H.

    2014-01-01

    Graphical abstract: - Highlights: • Ag/AgVO 3 and pure AgVO 3 nanowires synthesized by sonochemical process. • Characterization done using XRD, SEM, TEM, EDX and BET analysis. • Visible light degradation of RhB by Ag/AgVO 3 within 45 min. • Antibacterial activity of Ag/AgVO 3 demonstrated. - Abstract: Ag/AgVO 3 nanowires and AgVO 3 nanorods were synthesized in aqueous media via a facile sonochemical route. The as-synthesized products were characterized by X-ray diffraction, Brunauer–Emmett–Teller surface area analysis, scanning electron microscopy together with an energy dispersion X-ray spectrum analysis, transmission electron microscopy and UV–vis diffuse reflectance spectroscopy. The results revealed that inert atmosphere promotes the formation of Ag/AgVO 3 nanowires. The photocatalytic studies revealed that the Ag/AgVO 3 nanowires exhibited complete photocatalytic degradation of Rhodamine B within 45 min under visible light irradiation. The antibacterial activity of Ag/AgVO 3 nanowires was tested against Escherechia coli and Bacillus subtilis. The minimum growth inhibitory concentration value was found to be 50 and 10 folds lower than for the antibiotic ciprofloxacin for E. coli and B. subtilis, respectively. The antibacterial properties of the β-AgVO 3 nanorods prove that in case of the Ag dispersed Ag/AgVO 3 nanowires, the enhanced antibacterial action is also due to contribution from the AgVO 3 support

  13. Immunotoxicity of Silver Nanoparticles (AgNPs) on the Leukocytes of Common Bottlenose Dolphins (Tursiops truncatus).

    Science.gov (United States)

    Li, Wen-Ta; Chang, Hui-Wen; Yang, Wei-Cheng; Lo, Chieh; Wang, Lei-Ya; Pang, Victor Fei; Chen, Meng-Hsien; Jeng, Chian-Ren

    2018-04-04

    Silver nanoparticles (AgNPs) have been extensively used and are considered as an emerging contaminant in the ocean. The environmental contamination of AgNPs is expected to increase greatly over time, and cetaceans, as the top ocean predators, will suffer the negative impacts of AgNPs. In the present study, we investigate the immunotoxicity of AgNPs on the leukocytes of cetaceans using several methods, including cytomorphology, cytotoxicity, and functional activity assays. The results reveal that 20 nm Citrate-AgNPs (C-AgNP 20 ) induce different cytomorphological alterations and intracellular distributions in cetacean polymorphonuclear cells (cPMNs) and peripheral blood mononuclear cells (cPBMCs). At high concentrations of C-AgNP 20 (10 and 50 μg/ml), the time- and dose-dependent cytotoxicity in cPMNs and cPBMCs involving apoptosis is demonstrated. C-AgNP 20 at sub-lethal doses (0.1 and 1 μg/ml) negatively affect the functional activities of cPMNs (phagocytosis and respiratory burst) and cPBMCs (proliferative activity). The current study presents the first evidence of the cytotoxicity and immunotoxicity of AgNPs on the leukocytes of cetaceans and improves our understanding of environmental safety concerning AgNPs. The dose-response data of AgNPs on the leukocytes of cetaceans are invaluable for evaluating the adverse health effects in cetaceans and for proposing a conservation plan for marine mammals.

  14. Preparation and antibacterial activities of Ag/Ag+/Ag3+ nanoparticle composites made by pomegranate (Punica granatum) rind extract

    Science.gov (United States)

    Yang, Hui; Ren, Yan-yu; Wang, Tao; Wang, Chuang

    Nano-silver and its composite materials are widely used in medicine, food and other industries due to their strong conductivity, size effect and other special performances. So far, more microbial researches have been applied, but a plant method is rarely reported. In order to open up a new way to prepare AgNP composites, pomegranate peel extract was used in this work to reduce Ag+ to prepare Ag/Ag+/Ag3+ nanoparticle composites. UV-Vis was employed to detect and track the reduction of Ag+ and the forming process of AgNPs. The composition, structure and size of the crystal were analyzed by XRD and TEM. Results showed that, under mild conditions, pomegranate peel extract reacted with dilute AgNO3 solution to produce Ag/Ag+/Ag3+ nanoparticle composites. At pH = 8 and 10 mmol/L of AgNO3 concentration, the size of the achieved composites ranged between 15 and 35 nm with spherical shapes and good crystallinity. The bactericidal experiment indicated that the prepared Ag/Ag+/Ag3+ nanoparticles had strong antibacterial activity against gram positive bacteria and gram negative bacteria. FTIR analysis revealed that biological macromolecules with groups of sbnd NH2, sbnd OH, and others were distributed on the surface of the newly synthesized Ag/Ag+/Ag3+ nanoparticles. This provided a useful clue to further study the AgNP biosynthesis mechanism.

  15. BROOKHAVEN: AGS improvements

    International Nuclear Information System (INIS)

    Bleser, Ed

    1994-01-01

    The new Booster - AGS Alternating Gradient Synchrotron complex is providing beam while machine development to enhance performance also progresses, so far on schedule. In 1991 the Booster turned on and performed as requested - attesting to a successful construction and quality control programme. In 1992 beam was provided to users while the Booster met most of its operational goals - falling slightly short of its proton intensity goal of 0.5 x 10 13 protons per pulse (ppp). This would have been inconsequential except that the Booster intensity seemed to be hitting a fairly solid brick wall of undetermined origin. Since the goal for 1993 called for a doubling of the intensity, the situation seemed serious enough to schedule three months (February - April 1993) for Booster development

  16. AGS Experiments: 1989, 1990, 1991

    Energy Technology Data Exchange (ETDEWEB)

    Depken, J.C.

    1992-02-01

    This report contains: Experimental areas layout; table of beam parameters and fluxes; experiment schedule as run''; proposed 1992 schedule; a listing of experiments by number; two-page summaries of each experiment begin here, also ordered by number; publications of AGS Experiments begin here; and list of AGS Experimenters begins here.

  17. AGS Experiments: 1989, 1990, 1991

    Energy Technology Data Exchange (ETDEWEB)

    Depken, J.C.

    1992-02-01

    This report contains: Experimental areas layout; table of beam parameters and fluxes; experiment schedule ``as run``; proposed 1992 schedule; a listing of experiments by number; two-page summaries of each experiment begin here, also ordered by number; publications of AGS Experiments begin here; and list of AGS Experimenters begins here.

  18. AGS Experiments: 1989, 1990, 1991

    International Nuclear Information System (INIS)

    Depken, J.C.

    1992-02-01

    This report contains: Experimental areas layout; table of beam parameters and fluxes; experiment schedule ''as run''; proposed 1992 schedule; a listing of experiments by number; two-page summaries of each experiment begin here, also ordered by number; publications of AGS Experiments begin here; and list of AGS Experimenters begins here

  19. Construction of Ag/AgCl nanostructures from Ag nanoparticles as high-performance visible-light photocatalysts

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Fan; Liu, Dongzhi; Wang, Tianyang; Li, Wei [Tianjin University, School of Chemical Engineering and Technology (China); Hu, Wenping [Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (China); Zhou, Xueqin, E-mail: zhouxueqin@tju.edu.cn [Tianjin University, School of Chemical Engineering and Technology (China)

    2016-11-15

    A combined strategy of in situ oxidation and assembly is developed to prepare Ag/AgCl nanospheres and nanocubes from Ag nanoparticles under room temperature. It is a new facile way to fabricate Ag/AgCl with small sizes and defined morphologies. Ag/AgCl nanospheres with an average size of 80 nm were achieved without any surfactants, while Ag/AgCl nanocubes with a mean edge length of 150 nm were obtained by introduction of N-dodecyl-N,N-dimethyl-2-ammonio-acetate. The possible formation mechanism involves the self-assembly of AgCl nanoparticles, Ostwald ripening and photoreduction of Ag{sup +} into Ag{sup 0} by the room light. The as-prepared Ag/AgCl nanospheres and nanocubes exhibit excellent photocatalytic activity and stability toward degradation of organic pollutants under visible-light irradiation. It is demonstrated that Ag/AgCl nanocubes display enhanced photocatalytic activity in comparison with Ag/AgCl nanospheres due to the more efficient charge transfer. This work may pave an avenue to construct various functional materials via the assembly strategy using nanoparticles as versatile building blocks.

  20. Partial structures in molten AgBr

    Energy Technology Data Exchange (ETDEWEB)

    Ueno, Hiroki [Department of Condensed Matter Chemistry and Physics, Faculty of Sciences, Kyushu University, 4-2-1 Ropponmatsu, Chuo-ku, Fukuoka 810-8560 (Japan)], E-mail: ueno@gemini.rc.kyushu-u.ac.jp; Tahara, Shuta [Faculty of Pharmacy, Niigata University of Pharmacy and Applied Life Science, Higashijima, Akiha-ku, Niigata 956-8603 (Japan); Kawakita, Yukinobu [Department of Physics, Faculty of Sciences, Kyushu University, 4-2-1 Ropponmatsu, Chuo-ku, Fukuoka 810-8560 (Japan); Kohara, Shinji [Research and Utilization Division, Japan Synchrotron Radiation Research Institute (JASRI, SPring-8), 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo 679-5198 (Japan); Takeda, Shin' ichi [Department of Physics, Faculty of Sciences, Kyushu University, 4-2-1 Ropponmatsu, Chuo-ku, Fukuoka 810-8560 (Japan)

    2009-02-21

    The structure of molten AgBr has been studied by means of neutron and X-ray diffractions with the aid of structural modeling. It is confirmed that the Ag-Ag correlation has a small but well-defined first peak in the partial pair distribution function whose tail penetrates into the Ag-Br nearest neighbor distribution. This feature on the Ag-Ag correlation is intermediate between that of molten AgCl (non-superionic melt) and that of molten AgI (superionic melt). The analysis of Br-Ag-Br bond angle reveals that molten AgBr preserves a rocksalt type local ordering in the solid phase, suggesting that molten AgBr is clarified as non-superionic melt like molten AgCl.

  1. GAMBARAN ANTI HBc POSITIF PADA DONOR DARAH DENGAN HbsAG NEGATIF

    Directory of Open Access Journals (Sweden)

    Susila Sastri

    2009-09-01

    negatif dan antiHbc positif untuk memastikan darah donor tersebut tidak boleh ditransfusikan.Kata kunci: Skrining, HBV, HBsAg, Anti-HBc, donor darah  Abstract            HBsAg examination alone to screen for hepatitis B (HBV has not been able to guarantee freedom from HBV blood donor so that blood donors have not fulfilled the requirements to be transfused. Blood donors will be transfused donors should qualify them have never suffered from HBV. Screening of blood donors against HBV in the PMI only with HBsAg alone where the HBsAg test is negative at certain stages of HBV, in terms of donors suffering or recovering in HBV. Anti-HBc can provide information on HBV trip when combined with other HBV markers and anti-HBc last longer in the blood compared with other markers. HBsAg negative blood donors with anti-HBc positive than some previous research is still exist that contain HBV-DNA and can transmit HBV.Has done research on blood donors with anti-HBc test descriptively against HBsAg negative blood donors (n = 100 on the UTD PMI Branch of Padang in cross sectional study. Samples taken by proportional random sampling. Blood samples were HBsAg negative blood VDRL, HCV, HIV negative, all examined by the ELISA. The aim is to see the picture of positive anti-HBc in blood donors with HBsAg negative and look at the relationship between the index of HBsAg with anti-HBc index. Examination of anti-HBc by ELISA, equipment and reagents the same output. The results showed the frequency of positive anti-HBc in HBsAg negative blood donors by 27%, especially in men aged between 20-29 years (44.4%. There is a positive correlation between the index of negative HBsAg with anti-HBc index (r = 0.02. Anti-HBc positive are found in HBsAg negative index of 0.21 to 0.60 (76%. In conclusion, blood donors with negative HBsAg have been considered safe for transfusion is still likely to transmit HBV proven by the discovery of anti-HBc positive. Because it needs a further examination of HBV

  2. Detection of hepatitis B virus infection in HBsAg-negative patients by monoclonal antibodies against HBsAg

    International Nuclear Information System (INIS)

    Fujita, Y.K.

    1986-01-01

    The technique of producing antibody secreting hybridomas has made available high-affinity antibodies of predefined specificity for use as diagnostic reagents. Recently, high-affinity monoclonal antibodies to hepatitis B surface antigens (HBsAg) were produced and characterized. Immunoassay was developed using these antibodies for the detection of HBsAg-associated determinants. The present study indicated the significance of the enhanced detection by monoclonal radioimmunoassay (M-RIA) of HBsAg in sera of patients with hepatitis B virus infection. The M-RIA detected HBsAg in sera of hemodialysis patients and blood donor defined as HBsAg-negative by polyclonal RIA (2.2 %, 0.14 %, respectively). Furthermore, individuals with chronic liver diseases were reactive only in the M-RIA (chronic hepatitis 4.8 %, liver cirrhosis 10.0 %, hepatocellular carcinoma 22.2 %). It is noteworthy that some of these patients were diagnosesed as so-called non-A non-B hepatitis because of no serological markers of hepatitis B virus infection such as HBsAb and HBcAb. The enhanced performance of the monoclonal RIA compared to conventional RIA was due to the increased sensitivity of the assay (55 pg vs 230 pg/ml). In immunohistochemical study, one of the monoclonal antibody named 5C3 was applied for detection of HBsAg in the formalin-fixed paraffin-embedded liver. HBsAg was detected in 6 out of 41 HBsAg-seronegative liver specimen. Thus, the studies showed the importance of the clinical application of monoclonal antibodies such as immunoassay and immunohistochemical study in the diagnosis of hepatitis B virus infection. (author)

  3. Detection of hepatitis B virus infection in HBsAg-negative patients by monoclonal antibodies against HBsAg

    Energy Technology Data Exchange (ETDEWEB)

    Fujita, Y K

    1986-11-01

    The technique of producing antibody secreting hybridomas has made available high-affinity antibodies of predefined specificity for use as diagnostic reagents. Recently, high-affinity monoclonal antibodies to hepatitis B surface antigens (HBsAg) were produced and characterized. Immunoassay was developed using these antibodies for the detection of HBsAg-associated determinants. The present study indicated the significance of the enhanced detection by monoclonal radioimmunoassay (M-RIA) of HBsAg in sera of patients with hepatitis B virus infection. The M-RIA detected HBsAg in sera of hemodialysis patients and blood donor defined as HBsAg-negative by polyclonal RIA (2.2 %, 0.14 %, respectively). Furthermore, individuals with chronic liver diseases were reactive only in the M-RIA (chronic hepatitis 4.8 %, liver cirrhosis 10.0 %, hepatocellular carcinoma 22.2 %). It is noteworthy that some of these patients were diagnosesed as so-called non-A non-B hepatitis because of no serological markers of hepatitis B virus infection such as HBsAb and HBcAb. The enhanced performance of the monoclonal RIA compared to conventional RIA was due to the increased sensitivity of the assay (55 pg vs 230 pg/ml). In immunohistochemical study, one of the monoclonal antibody named 5C3 was applied for detection of HBsAg in the formalin-fixed paraffin-embedded liver. HBsAg was detected in 6 out of 41 HBsAg-seronegative liver specimen. Thus, the studies showed the importance of the clinical application of monoclonal antibodies such as immunoassay and immunohistochemical study in the diagnosis of hepatitis B virus infection.

  4. Preparation and antibacterial activities of Ag/Ag+/Ag3+ nanoparticle composites made by pomegranate (Punica granatum rind extract

    Directory of Open Access Journals (Sweden)

    Hui Yang

    Full Text Available Nano-silver and its composite materials are widely used in medicine, food and other industries due to their strong conductivity, size effect and other special performances. So far, more microbial researches have been applied, but a plant method is rarely reported. In order to open up a new way to prepare AgNP composites, pomegranate peel extract was used in this work to reduce Ag+ to prepare Ag/Ag+/Ag3+ nanoparticle composites. UV–Vis was employed to detect and track the reduction of Ag+ and the forming process of AgNPs. The composition, structure and size of the crystal were analyzed by XRD and TEM. Results showed that, under mild conditions, pomegranate peel extract reacted with dilute AgNO3 solution to produce Ag/Ag+/Ag3+ nanoparticle composites. At pH = 8 and 10 mmol/L of AgNO3 concentration, the size of the achieved composites ranged between 15 and 35 nm with spherical shapes and good crystallinity. The bactericidal experiment indicated that the prepared Ag/Ag+/Ag3+ nanoparticles had strong antibacterial activity against gram positive bacteria and gram negative bacteria. FTIR analysis revealed that biological macromolecules with groups of NH2, OH, and others were distributed on the surface of the newly synthesized Ag/Ag+/Ag3+ nanoparticles. This provided a useful clue to further study the AgNP biosynthesis mechanism. Keywords: Pomegranate rind, Biosynthesis, Ag/Ag+/Ag3+ nanoparticle composites, Antibacterial activity

  5. Bioceres: AG Biotechnology from Argentina

    Directory of Open Access Journals (Sweden)

    Roberto Feeney

    2016-04-01

    Full Text Available In this case we present a business decision-making situation in which the CEO of an Argentine Ag Biotech company, Bioceres, has to decide the best way to commercialize a new drought-tolerant transgenic technology. The company was founded by twenty three farmers, who shared a common dream that Argentina could become a benchmark in the development of Ag biotechnology. The case has strategic and financial implications, as well as decision-making situation involving a joint venture with an American biotechnology company. It also introduces to discussion the business models of Ag biotechnology companies in developing countries.

  6. Neutrino physics at the AGS

    International Nuclear Information System (INIS)

    Sokolsky, P.

    1978-01-01

    The AGS neutrino beam is the last low energy (1 to 2 GeV) neutrino beam left. As more work is done at higher energies and as the whole realm of new physics (whose threshold seems barely attainable at AGS ν energies) is explored in increasing detail, it is appropriate to ask what physics remains to be done here. To answer this question, current theory and experiment are confronted, not in an attempt to confirm or refute theoretical (or experimental) prejudices, but to ask if present experiments at low energies are good enough. In the process, the recent AGS neutrino experimental program are reviewed

  7. Characterization of core/shell Cu/Ag nanopowders synthesized by electrochemistry and assessment of their impact on hemolysis, platelet aggregation, and coagulation on human blood for potential wound dressing use

    Science.gov (United States)

    Laloy, Julie; Haguet, Hélène; Alpan, Lutfiye; Mancier, Valérie; Mejia, Jorge; Levi, Samuel; Dogné, Jean-Michel; Lucas, Stéphane; Rousse, Céline; Fricoteaux, Patrick

    2017-08-01

    Copper/silver core/shell nanopowders with different metal ratio have been elaborated by electrochemistry (ultrasound-assisted electrolysis followed by a displacement reaction). Characterization was performed by several methods (X-ray diffraction, scanning electron microscope, energy-dispersive X-ray spectroscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, centrifugal liquid sedimentation, and zeta potential measurements). The mean diameter of all nanoparticles is around 10 nm. The impact of each nanopowder on hemolysis, platelet aggregation, and coagulation has been studied on whole human blood. Hemolysis assays were performed with spectrophotometric measurement and platelet aggregation, with light transmission aggregometry and was compared to Cu/Pt core/shell nanoparticles with similar size as negative control. Calibrated thrombin generation test has been used for a coagulation study. They neither impact platelet aggregation nor hemolysis and have a procoagulant effect whatever their composition (i.e., metal ratio). These results highlight that such nanopowders have a potential use in medical applications (e.g., wound dressing).

  8. Low occurrence of HBsAg but high frequency of transient occult HBV infection in vaccinated and HBIG-administered infants born to HBsAg positive mothers.

    Science.gov (United States)

    Zhou, Shan; Li, Tingting; Allain, Jean-Pierre; Zhou, Bin; Zhang, Yuming; Zhong, Mei; Fu, Yongshui; Li, Chengyao

    2017-12-01

    The status of chronic and occult HBV infection (OBI) in neonatal hepatitis B vaccine and immunoglobulin (HBIG) vaccinated infants born to HBsAg+ mothers was investigated at a major hospital in China. Seventy-seven and 15 blood samples were collected in first or second follow-up detection from the vaccinated babies aged 3-36 months born to 43 HBsAg+ or plus 25 HBeAg+ mothers. HBV infection was analyzed between the paired baby and mother by serology and DNA analysis. Among 77 children born to 68 HBsAg+ mothers, 3.9% (3/77) were HBsAg+, and 36.4% (28/77) were HBV DNA+/HBsAg- (OBIs) by a single PCR, respectively. Thirteen of 28 HBV DNA+/HBsAg- samples were conformed by two PCRs or S sequence, which accounted for 16.9% (13/77) of children. Three HBsAg+ and six OBIs were genotyped in consistent with their mother's HBV strains. Of 77 babies' blood samples, anti-HBs reactivity varied slightly according to age groups, while passively transmitted anti-HBc reactivity declined from 100% high reactivity at age 3-5 months to mostly negative at age ≥12 months. Babies with apparent OBI had higher levels of anti-HBc and lower levels of anti-HBs than those without OBI but all eight OBI babies with second follow-up samples became HBV DNA negative beyond 1 year of age. The vaccinated infants born to HBsAg+ mothers presented the low rate of HBsAg occurrence as vaccination failure and high frequency of viral persistence in the form of transient OBIs since no evidence of active HBV infection occurred beyond 1 year of age. © 2017 Wiley Periodicals, Inc.

  9. Arcuate AgRP neurons mediate orexigenic and glucoregulatory actions of ghrelin★

    Science.gov (United States)

    Wang, Qian; Liu, Chen; Uchida, Aki; Chuang, Jen-Chieh; Walker, Angela; Liu, Tiemin; Osborne-Lawrence, Sherri; Mason, Brittany L.; Mosher, Christina; Berglund, Eric D.; Elmquist, Joel K.; Zigman, Jeffrey M.

    2013-01-01

    The hormone ghrelin stimulates eating and helps maintain blood glucose upon caloric restriction. While previous studies have demonstrated that hypothalamic arcuate AgRP neurons are targets of ghrelin, the overall relevance of ghrelin signaling within intact AgRP neurons is unclear. Here, we tested the functional significance of ghrelin action on AgRP neurons using a new, tamoxifen-inducible AgRP-CreERT2 transgenic mouse model that allows spatiotemporally-controlled re-expression of physiological levels of ghrelin receptors (GHSRs) specifically in AgRP neurons of adult GHSR-null mice that otherwise lack GHSR expression. AgRP neuron-selective GHSR re-expression partially restored the orexigenic response to administered ghrelin and fully restored the lowered blood glucose levels observed upon caloric restriction. The normalizing glucoregulatory effect of AgRP neuron-selective GHSR expression was linked to glucagon rises and hepatic gluconeogenesis induction. Thus, our data indicate that GHSR-containing AgRP neurons are not solely responsible for ghrelin's orexigenic effects but are sufficient to mediate ghrelin's effects on glycemia. PMID:24567905

  10. Arcuate AgRP neurons mediate orexigenic and glucoregulatory actions of ghrelin.

    Science.gov (United States)

    Wang, Qian; Liu, Chen; Uchida, Aki; Chuang, Jen-Chieh; Walker, Angela; Liu, Tiemin; Osborne-Lawrence, Sherri; Mason, Brittany L; Mosher, Christina; Berglund, Eric D; Elmquist, Joel K; Zigman, Jeffrey M

    2014-02-01

    The hormone ghrelin stimulates eating and helps maintain blood glucose upon caloric restriction. While previous studies have demonstrated that hypothalamic arcuate AgRP neurons are targets of ghrelin, the overall relevance of ghrelin signaling within intact AgRP neurons is unclear. Here, we tested the functional significance of ghrelin action on AgRP neurons using a new, tamoxifen-inducible AgRP-CreER(T2) transgenic mouse model that allows spatiotemporally-controlled re-expression of physiological levels of ghrelin receptors (GHSRs) specifically in AgRP neurons of adult GHSR-null mice that otherwise lack GHSR expression. AgRP neuron-selective GHSR re-expression partially restored the orexigenic response to administered ghrelin and fully restored the lowered blood glucose levels observed upon caloric restriction. The normalizing glucoregulatory effect of AgRP neuron-selective GHSR expression was linked to glucagon rises and hepatic gluconeogenesis induction. Thus, our data indicate that GHSR-containing AgRP neurons are not solely responsible for ghrelin's orexigenic effects but are sufficient to mediate ghrelin's effects on glycemia.

  11. Coating of hydroxyapatite doped Ag on commercially pure titanium surface

    International Nuclear Information System (INIS)

    Vieira, Jonas de Oliveira; Vercik, Luci Cristina de Oliveira; Rigo, Eliana Cristina da Silva

    2012-01-01

    This paper presents results of bioactive coating on commercially pure titanium surface (CpTi) doped with Ag ions. The coating consists of 3 steps, in step 1- surface chemical treatment of the samples with NaOH, step 2 - immersing the substrate in question in a sodium silicate solution (SS) to the nucleation and step 3 - reimmersion these substrates in synthetic solution that simulates the blood serum for precipitation and growth of apatite layer. After the coating step the AgNO 3 substrates were immersed in solutions with concentrations of 20 ppm and 100 ppm at 37 ° C for 48h. The substrates were characterized by scanning electron microscopy (SEM), infrared spectroscopy (IR) and X-ray diffraction (XRD). By the results verified the formation of an apatite layer with aspects of cells, on the surface of CpTi. The increase in Ag concentration causes an increase in Ag amount doped in apatite layer. With the results we concluded that it is possible to obtain an apatite layer on a metal surface as the CpTi doped with Ag ions

  12. Photoreduction of Ag{sup +} in Ag/Ag{sub 2}S/Au memristor

    Energy Technology Data Exchange (ETDEWEB)

    Mou, N.I.; Tabib-Azar, M., E-mail: azar.m@utah.edu

    2015-06-15

    Highlights: • The effect of illumination on the operating voltages and switching speed of Ag/Ag{sub 2}S/Au memristors is studied • Illumination decreased the average switching time from high to low resistance states by ∼19% and decreased the turn-off voltages dramatically from −0.8 V to −0.25 V. • Photo-induced reduction of silver in Ag{sub 2}S may be used in three dimensional optical memories that can be electronically read and reset. • Illumination changed sulfur's valency and modified its oxidation/reduction potential. - Abstract: Silver halides and chalcogenides are excellent memristor materials that have been extensively used in the past as photosensitive layers in photography. Here we examine the effect of illumination on the operating voltages and switching speed of Ag/Ag{sub 2}S/Au memristors using a green laser (473–523 nm). Our results indicate that illumination decreases the average switching time from high to low resistance states by ∼19% and decreases the turn-off voltages dramatically from −0.8 V to −0.25 V that we attribute to the change in sulfur valency and a photo-induced change in its oxidation/reduction potential. Photo-induced reduction of silver in Ag{sub 2}S may be used in three dimensional optical memories that can be electronically read and reset.

  13. Blood pressure

    Science.gov (United States)

    Normal blood pressure is important for proper blood flow to the body's organs and tissues. The force of the blood on the walls of the arteries is called blood pressure. Blood pressure is measured both as the heart ...

  14. Blood Types

    Science.gov (United States)

    ... blood, safe blood transfusions depend on careful blood typing and cross-matching. There are four major blood ... cause exceptions to the above patterns. ABO blood typing is not sufficient to prove or disprove paternity ...

  15. File list: Unc.Bld.20.AllAg.Follicular_helper_T_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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    Lifescience Database Archive (English)

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  7. File list: DNS.Bld.50.AllAg.RAW_264PERIOD7 [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  8. File list: InP.Bld.50.AllAg.RAW_264PERIOD7 [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  9. File list: DNS.Bld.10.AllAg.RAW_264PERIOD7 [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  10. File list: Oth.Bld.20.AllAg.RAW_264PERIOD7 [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  11. File list: Oth.Bld.50.AllAg.RAW_264PERIOD7 [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  12. File list: His.Bld.50.AllAg.RAW_264PERIOD7 [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  13. File list: DNS.Bld.05.AllAg.RAW_264PERIOD7 [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  14. File list: ALL.Bld.10.AllAg.RAW_264PERIOD7 [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  15. File list: ALL.Bld.50.AllAg.RAW_264PERIOD7 [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  16. File list: His.Bld.05.AllAg.RAW_264PERIOD7 [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  17. File list: InP.Bld.50.AllAg.Pro-B_cells [Chip-atlas[Archive

    Lifescience Database Archive (English)

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  18. Ruhrgas AG. Business report 2000; Ruhrgas AG. Geschaeftsbericht 2000

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    A detailed account of the situation of the international gas market provides the basis of the status report of Ruhrgas AG and the group of affiliated companies. Emphasis is placed on gas procurement aspects, sales volumes, the construction and operation of natural gas distribution systems, and on development, utilization and application aspects. The activities and situation of major Ruhrgas AG holding companies are described, and the annual financial statements are documented. (orig.) [German] Ausgehend von einer eingehenden Beschreibung des internationalen Gasmarktes wird ein Lagebericht des Konzerns sowie der Ruhrgas AG gegeben. Dabei wird insbesondere auf Fragen der Gasbeschaffung, des Gasabsatzes, des Baus und Betriebs von Erdgasverteilungsnetzen, sowie der Entwicklung und der Anwendungstechnik eingegangen. Ferner wird ueber den Geschaeftsverlauf wesentlicher Ruhrgas-Beteiligungsgesellschaften berichtet. Abschliessend wird der Jahresabschluss dokumentiert. (orig.)

  19. 1. Transfusion Transmissible Infections among Voluntary Blood ...

    African Journals Online (AJOL)

    Esem

    ABSTRACT. Background: HIV1&2, HBsAg, anti-HCV and syphilis antibody are mandatory disease marker tests of Transfusion Transmissible Infections (TTIs) conducted on every donated unit of blood in Zambia. Blood is donated by first time voluntary donors and repeat/regular donors ofages between 16 and 65 years.

  20. Factors influencing infection and transmission of Anopheles gambiae densovirus (AgDNV in mosquitoes

    Directory of Open Access Journals (Sweden)

    Tapan K. Barik

    2016-11-01

    Full Text Available Anopheles gambiae densovirus (AgDNV is a potential microbial agent for paratransgenesis and gene transduction in An. gambiae, the major vector of human malaria in sub-Saharan Africa. Understanding the interaction between AgDNV and An. gambiae is critical for using AgDNV in a basic and applied manner for Anopheles gene manipulation. Here, we tested the effects of mosquito age, sex, blood feeding status, and potential for horizontal transmission using an enhanced green fluorescent protein (EGFP reporter AgDNV system. Neither mosquito age at infection nor feeding regime affected viral titers. Female mosquitoes were more permissive to viral infection than males. Despite low viral titers, infected males were able to venereally transmit virus to females during mating, where the virus was localized with the transferred sperm in the spermathecae. These findings will be useful for designing AgDNV-based strategies to manipulate Anopheles gambiae.

  1. Factors influencing infection and transmission of Anopheles gambiae densovirus (AgDNV) in mosquitoes.

    Science.gov (United States)

    Barik, Tapan K; Suzuki, Yasutsugu; Rasgon, Jason L

    2016-01-01

    Anopheles gambiae densovirus (AgDNV) is a potential microbial agent for paratransgenesis and gene transduction in An. gambiae , the major vector of human malaria in sub-Saharan Africa. Understanding the interaction between AgDNV and An. gambiae is critical for using AgDNV in a basic and applied manner for Anopheles gene manipulation. Here, we tested the effects of mosquito age, sex, blood feeding status, and potential for horizontal transmission using an enhanced green fluorescent protein (EGFP) reporter AgDNV system. Neither mosquito age at infection nor feeding regime affected viral titers. Female mosquitoes were more permissive to viral infection than males. Despite low viral titers, infected males were able to venereally transmit virus to females during mating, where the virus was localized with the transferred sperm in the spermathecae. These findings will be useful for designing AgDNV-based strategies to manipulate Anopheles gambiae .

  2. Asymmetric interfaces in Fe/Ag and Ag/Fe bilayers prepared by molecular beam evaporation

    Energy Technology Data Exchange (ETDEWEB)

    Tunyogi, A. [KFKI Research Institute for Particle and Nuclear Physics, P.O. Box 49, H-1525 Budapest (Hungary)]. E-mail: tunyogi@rmki.kfki.hu; Paszti, F. [KFKI Research Institute for Particle and Nuclear Physics, P.O. Box 49, H-1525 Budapest (Hungary); Osvath, Z. [MTA Research Institute for Technical Physics and Materials Science, P.O. Box 49, H-1525 Budapest (Hungary); Tancziko, F. [KFKI Research Institute for Particle and Nuclear Physics, P.O. Box 49, H-1525 Budapest (Hungary); Major, M. [KFKI Research Institute for Particle and Nuclear Physics, P.O. Box 49, H-1525 Budapest (Hungary); Szilagyi, E. [KFKI Research Institute for Particle and Nuclear Physics, P.O. Box 49, H-1525 Budapest (Hungary)

    2006-08-15

    Single layers of Fe and Ag, as well as Fe/Ag (iron deposited first) and Ag/Fe bilayers were prepared by molecular beam evaporation onto Si. The samples were investigated with backscattering spectrometry (BS) and atomic force microscopy (AFM). BS spectra of Fe/Ag and Ag/Fe indicate a significant difference at the interface. In the case of Fe/Ag the Ag peak has a long tail at the interface, while for Ag/Fe the interface is abrupt. The tail in the Fe/Ag spectrum is too large to be caused by double or plural scattering. According to AFM, the effect of surface roughness is also negligible. In spite of the fact that Fe and Ag are completely immiscible in equilibrium, this tail, however, suggests that some Ag is located in the Fe layer. After annealing, both samples show mixing between the two layers; this is much larger again for Fe/Ag.

  3. Analysis of the residual strain change of Bi2212, Ag alloy and Ag during the heating and cooling process in Bi2212/Ag/Ag alloy composite wire

    International Nuclear Information System (INIS)

    Shin, J K; Ochiai, S; Okuda, H; Mukai, Y; Sugano, M; Sato, M; Oh, S S; Ha, D W; Kim, S C

    2008-01-01

    The residual strain change of Bi2212 and Ag during the cooling and heating process in the Bi2212/Ag/Ag alloy composite superconductor was studied. First, the residual strain of Bi2212 filaments at room temperature was measured by the x-ray diffraction method. Then, the Young's moduli of the constituents (Bi2212 filaments, Ag and Ag alloy) and yield strains of Ag and Ag alloy were estimated from the analysis of the measured stress-strain curve, based on the rule of mixtures. Also, the coefficient of thermal expansion of the Bi2212 filaments was estimated from the analysis of the measured thermal expansion curve of the composite wire. From the modeling analysis using the estimated property values and the residual strain of Bi2212 filaments, the changes of residual strain of Bi2212, Ag alloy and Ag with temperature during the cooling and heating process were revealed

  4. The AGS Booster control system

    International Nuclear Information System (INIS)

    Frankel, R.; Auerbach, E.; Culwick, B.; Clifford, T.; Mandell, S.; Mariotti, R.; Salwen, C.; Schumburg, N.

    1988-01-01

    Although moderate in size, the Booster construction project requires a comprehensive control system. There are three operational modes: as a high intensity proton injector for the AGS, as a heavy ion accelerator and injector supporting a wide range of ions and as a polarized proton storage injector. These requirements are met using a workstation based extension of the existing AGS control system. Since the Booster is joining a complex of existing accelerators, the new system will be capable of supporting multiuser operational scenarios. A short discussion of this system is discussed in this paper

  5. One-pot synthesis of Ag-SiO2-Ag sandwich nanostructures

    International Nuclear Information System (INIS)

    Li Chaorong; Mei Jie; Li Shuwen; Lu Nianpeng; Wang Lina; Chen Benyong; Dong Wenjun

    2010-01-01

    Ag-SiO 2 -Ag sandwich nanostructures were prepared by a facile one-pot synthesis method. The Ag core, SiO 2 shell and Ag nanoparticle shell were all synthesized with polyvinylpyrrolidone, catalysed by ammonia, in the one-pot reaction. The polyvinylpyrrolidone, acting as a smart reducing agent, reduced the Ag + to Ag cores and Ag shells separately. Furthermore, the polyvinylpyrrolidone served as a protective agent to prevent the silver cores from aggregating. The SiO 2 shell and outer layer Ag nanoparticles were obtained when tetraethyl orthosilicate and ammonia were added to the silver core solution. Ammonia, acting as the catalyst, accelerated the hydrolysis of the tetraethyl orthosilicate to SiO 2 , which coated the silver cores. Furthermore, Ag(NH 3 ) 2 + ions were formed when aqueous ammonia was added to the solution, which increased the reduction capability. Then the polyvinylpyrrolidone reduced the Ag(NH 3 ) 2 + ions to small Ag nanoparticles on the surface of the Ag-SiO 2 and formed Ag-SiO 2 -Ag sandwich structures with a standard deviation of less than 4%. This structure effectively prevented the Ag nanoparticles on the silica surface from aggregating. Furthermore, the Ag-SiO 2 -Ag sandwich structures showed good catalysis properties due to the large surface area/volume value and activity of surface atoms of Ag particles.

  6. Postlingual hearing loss as a mitochondrial 3243A>G mutation phenotype.

    Directory of Open Access Journals (Sweden)

    Katarzyna Iwanicka-Pronicka

    Full Text Available BACKGROUND: The prevalence of isolated hearing loss (HL associated with the m.3243A>G mutation is unknown. The aim of this study was to assess the frequency and heteroplasmy level of the m.3243A>G mutation in a large group of Polish patients with postlingual bilateral sensorineural HL of unidentified cause. METHODOLOGY/PRINCIPAL FINDINGS: A molecular search was undertaken in the archival blood DNA of 1482 unrelated patients with isolated HL that had begun at ages between 5 and 40 years. Maternal relatives of the probands were subsequently investigated and all carriers underwent audiological tests. The m.3243A>G mutation was found in 16 of 1482 probands (an incidence of 1.08% and 18 family members. Of these 34 individuals, hearing impairment was detected in 29 patients and the mean onset of HL was at 26 years. Some 42% of the identified m.3243A>G carriers did not develop multisystem symptomatology over the following 10 years. Mean heteroplasmy level of m.3243A>G was lowest in blood at a level of 14% and highest in urine at 58%. These values were independent of the manifested clinical severity of the disease. CONCLUSIONS: A single m.3243A>G carrier can usually be found among each 100 individuals who have postlingual hearing loss of unknown cause. Urine samples are best for detecting the m.3243A>G mutation and diagnosing mitochondrially inherited hearing loss.

  7. Prevalence of HBsAg Among Prospective Blood Donors and ...

    African Journals Online (AJOL)

    Keywords: Hepatitis B, Prevalence, Liver function test, Kebbi State. .... determine Total Protein (Weichselbaum, 1946), Albumin. (Doumas et al., 1971), ... and mechanical transfers are also possible means of ..... Biuret method of serum total.

  8. Polarized protons at the AGS

    International Nuclear Information System (INIS)

    Krisch, A.D.

    1981-01-01

    Various aspects of the project of modifying the Brookhaven AGS for the production of polarized proton beams are discussed. It is observed that pure spin state cross sections are of great importance in many investigations since differences between spin states are frequently significant. Financial and technical aspects of the modification of the Brookhaven accelerator are also discussed

  9. AGS 20th anniversary celebration

    International Nuclear Information System (INIS)

    Baggett, N.V.

    1980-01-01

    On May 22, 1980, a symposium was held at Brookhaven to celebrate the 20th birthday of the AGS, to recall its beginnings, and to review major discoveries that have been made with its beams. The talks at the symposium are recorded in this volume

  10. AGS 20th anniversary celebration

    Energy Technology Data Exchange (ETDEWEB)

    Baggett, N.V. (ed.)

    1980-05-22

    On May 22, 1980, a symposium was held at Brookhaven to celebrate the 20th birthday of the AGS, to recall its beginnings, and to review major discoveries that have been made with its beams. The talks at the symposium are recorded in this volume.

  11. AGS experiments---1987, 1988, 1989

    International Nuclear Information System (INIS)

    Depken, J.C.

    1989-04-01

    This report contains: Experimental Areas Layout; Table of Beam Parameters and Fluxes; Experiment Schedule ''as run''; Experiment Long Range Schedule; A listing of experiments by number; Two-page summaries of each experiment begin here, also ordered by number; Publications of AGS experiments; and List of experimenters

  12. AGS experiments: 1985, 1986, 1987

    International Nuclear Information System (INIS)

    Depken, J.C.

    1987-01-01

    This report contains: Experimental areas layout, table of beam parameters and fluxes, experiment schedule ''as run,'' experiment long range schedule, a listing of experiments by number, two-page summaries of each experiment, also ordered by number, and publications of AGS experiments, 1982-1987

  13. AGS experiments, 1988, 1989, 1990

    International Nuclear Information System (INIS)

    Depken, J.C.

    1991-04-01

    This report contains: experimental areas layout; table of beam parameters and fluxes; experiment schedule ''as run''; experiment long range schedule; a listing of experiments by number; two-page summaries of each experiment begin here, also ordered by number; publications of AGS experiments; and list of experimenters

  14. Translocation, accumulation and distribution of 110mAg in carp

    International Nuclear Information System (INIS)

    Li Chuanzhao; Zhao Wenhu; Xu Shiming

    1995-01-01

    The experimental carp were raised in the water with 110m Ag specific activity of 3.7 x 10 2 Bq/L, 3.7 x 10 3 Bq/L, 3.7 x 10 4 Bq/L respectively. The carp were sampled after raising 1,2,3,5,7,9,12,15,18,21 and 23 days, and separated into scale, bone, muscle, gill, alimentary canal, heart and heptapancreas for measuring the radioactivity. The results showed that 110m Ag was absorbed rapidly by carp via gill and alimentary canal from water, and distributed into all parts of the body, mainly in soft tissue with blood circulation. 110m Ag accumulation of the body increased with the 110m Ag specific activity in the water in the same raising time. The accumulation of 110m Ag in gill, alimentary canal, heart, muscle and bone appeared mono-peak curves with raising time. There was a linear relationship between the specific activity of 110m Ag in heptapancreas and the carp's raising time in 110m Ag water. The concentration abilities for 110m Ag in all organs were in the order of heptapancreas>gill>alimentary>canal>heart>muscle>bone

  15. Synthesis, morphological control, and antibacterial properties of hollow/solid Ag2S/Ag heterodimers

    KAUST Repository

    Pang, Maolin

    2010-08-11

    Ag2S and Ag are important functional materials that have received considerable research interest in recent years. In this work, we develop a solution-based synthetic method to combine these two materials into hollow/solid Ag2S/Ag heterodimers at room temperature. Starting from monodisperse Cu2O solid spheres, CuS hollow spheres can be converted from Cu2O through a modified Kirkendall process, and the obtained CuS can then be used as a solid precursor for preparation of the Ag2S/Ag heterodimers through ion exchange and photo-assisted reduction. We have found that formation of the Ag2S/Ag heterodimers is instantaneous, and the size of Ag nanocrystals on the hollow spheres of Ag2S can be controlled by changing the concentration and power of reducing agents in the synthesis. The growth of Ag nanoparticles on hollow spheres of Ag2S in the dimers is along the [111] direction of the silver crystal; the light absorption properties have also been investigated. Furthermore, coupling or tripling of Ag2S/Ag heterodimers into dumbbell-like trimers ((Ag 2S)2/Ag, linear) and triangular tetramers ((Ag 2S)3/Ag, coplanar) can also be attained at 60°C by adding the bidentate ligand ethylenediamine as a cross-linking agent. To test the applicability of this highly asymmetric dipolar composite, photocatalytic inactivation of Escherichia coli K-12 in the presence of the as-prepared Ag 2S/Ag heterodimers has been carried out under UV irradiation. The added Ag2S/Ag heterodimers show good chemical stability under prolonged UV irradiation, and no appreciable solid dissolution is found. Possible mechanisms regarding the enhanced antibacterial activity have also been addressed. © 2010 American Chemical Society.

  16. 105Ag and 107Ag with the (p, t) reaction

    International Nuclear Information System (INIS)

    Del Vecchio, R.M.; Oelrich, I.C.; Naumann, R.A.

    1975-01-01

    The 107 , 109 Ag(p, t) 105 , 107 Ag reactions have been studied at 30 MeV bombarding energy. Tritons were detected with a 60 cm position-sensitive wire proportional counter backed by a plastic scintillator in the focal plane of a quadrupole-dipole-dipole-dipole (QDDD) spectrograph. Multiplet structure, interpretable as the coupling of a 2p 1 / 2 proton to vibrational core states, was observed in both nuclei. In addition, some 50 levels in each nucleus were seen below about 3 MeV of excitation with a resolution of 10 keV. DWBA calculations with simple two particle configurations worked rather well and permitted the determination of L transfers. A considerable amount of (p, t) strength in the region from 2-3 MeV of excitation in each nucleus was observed, not all of which could be associated with expected weak coupling to the 3 - core state

  17. AGS experiments: 1990, 1991, 1992. Ninth edition

    Energy Technology Data Exchange (ETDEWEB)

    Depken, J.C.

    1993-04-01

    This report contains a description of the following: AGS Experimental Area - High Energy Physics FY 1993 and Heavy Ion Physics FY 1993; Table of Beam Parameters and Fluxes; Experiment Schedule ``as run``; Proposed 1993 Schedule; A listing of experiments by number; Two-page summaries of each experiment begin here, also ordered by number; Publications of AGS Experiments; and List of AGS Experimenters.

  18. The negative temperature coefficient resistivities of Ag2S-Ag core–shell structures

    International Nuclear Information System (INIS)

    Yu, Mingming; Liu, Dongzhi; Li, Wei; Zhou, Xueqin

    2014-01-01

    In this paper, the conductivity of silver nanoparticle films protected by 3-mercaptopropionic acid (Ag/MPA) has been investigated. When the nanoparticles were annealed in air at 200 °C, they converted to stable Ag 2 S-Ag core–shell structures. The mechanism for the formation of the Ag 2 S-Ag core–shell structures along with the compositional changes and the microstructural evolution of the Ag/MPA nanoparticles during the annealing process are discussed. It is proposed that the Ag 2 S-Ag core–shell structure was formed through a solid-state reduction reaction, in which the Ag + ions coming from Ag 2 S were reduced by sulfonate species and sulfur ions. The final Ag 2 S-Ag films display an exponentially decreased resistivity with increasing temperature from 25 to 170 °C. The negative temperature coefficient resistivity of Ag 2 S-Ag films can be adjusted by changing the S/Ag molar ratio used for the synthesis of the Ag/MPA nanoparticles, paving the way for the preparation of negative temperature-coefficient thermistors via printing technology for use in the electronics.

  19. Synthesis, morphological control, and antibacterial properties of hollow/solid Ag2S/Ag heterodimers

    KAUST Repository

    Pang, Maolin; Hu, Jiangyong; Zeng, Huachun

    2010-01-01

    of this highly asymmetric dipolar composite, photocatalytic inactivation of Escherichia coli K-12 in the presence of the as-prepared Ag 2S/Ag heterodimers has been carried out under UV irradiation. The added Ag2S/Ag heterodimers show good chemical stability under

  20. Physical and operational infrastructure of transfusion services of the public blood bank network in the State of Minas Gerais, Brazil, 2007/2008 Infraestrutura física e operacional das agências transfusionais da hemorrede pública do Estado de Minas Gerais, Brasil, 2007/2008

    Directory of Open Access Journals (Sweden)

    Stela Brener

    2010-01-01

    Full Text Available INTRODUCTION: Within the context of transfusion safety, the immunohematological study of donors and recipients of blood products is currently the most fragile link in the transfusion chain of the public blood bank network of Minas Gerais. OBJECTIVE: The objective of this work was to provide a critical and situational overview of the physical and operational infrastructure of the transfusion services in the state. Method: This was an observational cross-sectional, evidence-based study covering 226 transfusion services; only 19 belong to the Hemominas Foundation and 207 are non-Hemominas transfusion services. The investigation involved the application of questionnaires and red cell panel tests. RESULTS: The results revealed considerable non-compliance with the national law and with the norms of Hemominas. These findings were obtained for the two groups studied; however the frequencies were higher among non-Hemominas transfusion services. CONCLUSION: The study provides information about the situation of the physical and operational infrastructure of transfusion services that may be used to help plan effective measures for improvement and serve as the basis for an evaluation of the impact of future interventions regarding the quality, reliability and safety of transfusions. As primordial factors, we propose compliance with the law, qualified personnel and investment in further qualifications, a review of training methods, and more rigorous inspection of transfusion services. As a suggestion, we propose the establishment of an External Quality Control Program in Immunohematology for the entire network of blood banks in the state and the adoption of the methods presented in this study as a tool to monitor transfusion service performance.INTRODUÇÃO: No contexto da segurança transfusional, o estudo imuno-hematológico do doador e do receptor de hemocomponentes é hoje o elo mais frágil da cadeia transfusional na hemorrede pública de Minas Gerais

  1. Photoinduced formation of Ag nanoparticles on the surface of As2S3/Ag thin bilayer

    International Nuclear Information System (INIS)

    Binu, S; Khan, Pritam; Barik, A R; Sharma, Rituraj; Adarsh, K V; Golovchak, R; Jain, H

    2014-01-01

    In this article, we demonstrate the combined effect of photodoping and photoinduced-surface deposition in a bilayer of chalcogenide glass (ChG) and Ag as an alternative method to optically synthesize Ag nanoparticles (AgNP) on the surface of ChG. In our experiment, AgNP formation occurs through two distinct stages: In the first stage, Ag is transported through the As 2 S 3 layer as Ag + ions, and in the second stage Ag + ions are photo-deposited as AgNP. The ex situ x-ray photoelectron spectroscopy measurements and AFM observations show photoinduced Ag mass transport and the formation of AgNP. (paper)

  2. Green synthesis of graphene/Ag nanocomposites

    International Nuclear Information System (INIS)

    Yuan Wenhui; Gu Yejian; Li Li

    2012-01-01

    Graphical abstract: A facile and green approach to synthesis of GNS/AgNPs is reported by employing sodium citrate as reductant, and this study represents the use of biocompounds for nontoxic and scalable production of GNS/AgNPs under a suitable concentration of silver ions and the prepared GNS/AgNPs can be used in the field of disinfection. Highlights: ► Graphene/Ag nanocomposites were prepared by a green and facile strategy based on sodium citrate. ► The influence of AgNO 3 amount on particle size and size range of AgNPs was studied. ► The surface plasmon resonance properties of AgNPs on graphene was investigated. ► The antibacterial activity of silver nanoparticles was retained in the nanocomposites. - Abstract: Graphene/Ag nanocomposites (GNS/AgNPs) were fabricated via a green and facile method, employing graphite oxide (GO) as a precursor of graphene, AgNO 3 as a precursor of Ag nanoparticles, and sodium citrate as an environmentally friendly reducing and stabilizing agent. The synthesized GNS/AgNPs were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS) and Raman spectra (RS), respectively. The results indicated that graphite oxide was completely reduced to graphene, and the silver ion was reduced by sodium citrate simultaneously. Under a suitable dosage of silver ions, well-dispersed AgNPs on the graphene sheets mostly centralized at 20–25 nm. The surface plasmon resonance property of AgNPs on graphene showed that there was a interaction between AgNPs and graphene supports. In addition, antibacterial activity of silver nanoparticles was retained in the nanocomposites, suggesting that they can be potentially used as a graphene-based biomaterial.

  3. Diversity and origin of hepatitis B virus in Dutch blood donors

    NARCIS (Netherlands)

    Koppelman, M. H. G. M.; Zaaijer, H. L.

    2004-01-01

    Two considerations led us to study the genetic diversity and origin of hepatitis B virus (HBV) in Dutch blood donors. Firstly, an HBV-infected Dutch blood donor was found negative by four assays used commonly for detection of HBV surface antigen (HBsAg). How variable is HBsAg among HBV infected

  4. Prevalence of Hepatitis-B Surface Antigen among Blood Donors in ...

    African Journals Online (AJOL)

    Information is scarce on the prevalence of Hepatitis-B Virus (HBV) infection among blood donors in Taraba State. Hepatitis-B surface antigen (HBsAg) ELISA [Gudans Industrial Hong 2 Kou, China] was used to determine the prevalence of HBsAg among 804 blood donors aged between 11 and 65 years in Federal Medical ...

  5. Spectroscopic observations of AG Dra

    International Nuclear Information System (INIS)

    Chang-Chun, H.

    1982-01-01

    During summer 1981, spectroscopic observations of AG Dra were performed at the Haute-Provence Observatory using the Marly spectrograph with a dispersion of 80 A mm -1 at the 120 cm telescope and using the Coude spectrograph of the 193 cm telescope with a dispersion of 40 A mm -1 . The actual outlook of the spectrum of AG Dra is very different from what it was in 1966 in the sense that only a few intense absorption lines remain, the heavy emission continuum masking the absorption spectrum, while on the 1966 plate, about 140 absorption lines have been measured. Numerous emission lines have been measured, most of them, present in 1981, could also be detected in 1966. They are due to H, HeI and HeII. (Auth.)

  6. Band structure in 104Ag

    International Nuclear Information System (INIS)

    Goswami, A.; Saha Sarkar, M.; Datta Pramanik, U.; Banerjee, P.; Basu, P.; Bhattacharya, P.; Bhattacharya, S.; Chatterjee, M.L.; Sen, S.; Dasmahapatra, B.

    1995-01-01

    The level structure of 104 Ag has been studied through the 103 Rh(α,3nγ) reaction at E α =40 and 45 MeV. The principal features of the proposed level scheme are in agreement with those obtained earlier through heavy ion reaction. A two-quasiparticle-plus-rotor model calculation has been performed, and the results are compared with experimental data. (orig.)

  7. Comparative Study of Antimicrobial Activity of AgBr and Ag Nanoparticles (NPs)

    Science.gov (United States)

    Suchomel, Petr; Kvitek, Libor; Panacek, Ales; Prucek, Robert; Hrbac, Jan; Vecerova, Renata; Zboril, Radek

    2015-01-01

    The diverse mechanism of antimicrobial activity of Ag and AgBr nanoparticles against gram-positive and gram-negative bacteria and also against several strains of candida was explored in this study. The AgBr nanoparticles (NPs) were prepared by simple precipitation of silver nitrate by potassium bromide in the presence of stabilizing polymers. The used polymers (PEG, PVP, PVA, and HEC) influence significantly the size of the prepared AgBr NPs dependently on the mode of interaction of polymer with Ag+ ions. Small NPs (diameter of about 60–70 nm) were formed in the presence of the polymer with low interaction as are PEG and HEC, the polymers which interact with Ag+ strongly produce nearly two times bigger NPs (120–130 nm). The prepared AgBr NPs were transformed to Ag NPs by the reduction using NaBH4. The sizes of the produced Ag NPs followed the same trends – the smallest NPs were produced in the presence of PEG and HEC polymers. Prepared AgBr and Ag NPs dispersions were tested for their biological activity. The obtained results of antimicrobial activity of AgBr and Ag NPs are discussed in terms of possible mechanism of the action of these NPs against tested microbial strains. The AgBr NPs are more effective against gram-negative bacteria and tested yeast strains while Ag NPs show the best antibacterial action against gram-positive bacteria strains. PMID:25781988

  8. Donating Blood

    Science.gov (United States)

    ... The medical history includes questions that help blood bank staff decide if a person is healthy enough to donate blood. They'll ... Food and Drug Administration (FDA) regulates U.S. blood banks. All blood ... operating. Sometimes people who donate blood notice a few minor side ...

  9. In situ solid-state fabrication of hybrid AgCl/AgI/AgIO3 with improved UV-to-visible photocatalytic performance.

    Science.gov (United States)

    Xie, Jing; Cao, Yali; Jia, Dianzeng; Li, Yizhao; Wang, Kun; Xu, Hui

    2017-09-28

    The AgCl/AgI/AgIO 3 composites were synthesized through a one-pot room-temperature in situ solid-state approach with the feature of convenient and eco-friendly. The as-prepared composites exhibit superior photocatalytic performance than pure AgIO 3 for the degradation of methyl orange (MO) under both UV and visible light irradiation. The photodegradation rate toward MO of the AgCl/AgI/AgIO 3 photocatalyst can reach 100% after 12 min irradiation under UV light, or 85.4% after 50 min irradiation under visible light, being significantly higher than AgCl, AgI, AgIO 3 and AgI/AgIO 3 . In addition, the AgCl/AgI/AgIO 3 photocatalyst possesses strong photooxidation ability for the degradation of rhodamine B (RhB), methylene blue (MB), phenol, bisphenol A (BPA) and tetracycline hydrochloride under visible light irradiation. The reactive species capture experiments confirmed that the h + and •O 2- play an essential role during the photocatalytic process under UV light or visible light irradiation. The enhanced effect may be beneficial from the enhanced light adsorption in full spectrum and increased separation efficiency of photogenerated hole-electron pairs, which can be ascribed to the synergistic effect among AgCl, AgI and AgIO 3 nanoplates in AgCl/AgI/AgIO 3 composites.

  10. What's Blood?

    Science.gov (United States)

    ... Body Make Blood? It's not made in a kitchen, but blood has ingredients, just like a recipe. ... these ingredients together and you have blood — an essential part of the circulatory system. Thanks to your ...

  11. Blood typing

    Science.gov (United States)

    ... detect these minor antigens. It is done before transfusions, except in emergency situations. Alternative Names Cross matching; Rh typing; ABO blood typing; Blood group; Anemia - immune hemolytic blood type; ...

  12. Blood smear

    Science.gov (United States)

    ... smear URL of this page: //medlineplus.gov/ency/article/003665.htm Blood smear To use the sharing features on this ... view of cellular parasites Malaria, photomicrograph of cellular parasites Red blood cells, sickle cells Red blood cells, sickle and ...

  13. Thermochemical properties of silver tellurides including empressite (AgTe) and phase diagrams for Ag-Te and Ag-Te-O

    Science.gov (United States)

    Voronin, Mikhail V.; Osadchii, Evgeniy G.; Brichkina, Ekaterina A.

    2017-10-01

    This study compiles original experimental and literature data on the thermodynamic properties (ΔfG°, S°, ΔfH°) of silver tellurides (α-Ag2Te, β-Ag2Te, Ag1.9Te, Ag5Te3, AgTe) obtained by the method of solid-state galvanic cell with the RbAg4I5 and AgI solid electrolytes. The thermodynamic data for empressite (AgTe, pure fraction from Empress Josephine Mine, Colorado USA) have been obtained for the first time by the electrochemical experiment with the virtual reaction Ag + Te = AgTe. The Ag-Te phase diagrams in the T - x and log fTe2 (gas) - 1/ T coordinates have been refined, and the ternary Ag-Te-O diagrams with Ag-Te-TeO2 (paratellurite) composition range have been calculated.

  14. Biotest-directed identification of toxic organic compounds in sediments - a contribution to risk assessment of complex contaminations using the small river Spittelwasser as an example; Biotestorientierte Identifikation toxischer organischer Sedimentinhaltsstoffe - ein Beitrag zur Risikoanalyse komplexer Kontaminationen am Beispiel des Spittelwassers

    Energy Technology Data Exchange (ETDEWEB)

    Brack, W.; Altenburger, R.; Ensenbach, U.; Nehls, S.; Segner, H.; Schueuermann, G. [UFZ Centre for Environmental Research, Leipzig (Germany). Dept. of Chemical Ecotoxicology

    2000-11-01

    Risk assessment of chemicals intentionally or unintentionally emitted to the environment is an important task of preventive environmental protection. Risk assessment combines effects assessment with exposure assessment. It identifies negative effects of the respective chemical and the concentration range necessary for exhibiting these effects. This range of effect concentrations is related to the expected exposure range in the ecosystem, that shall be protected, calculating probabilities for the effect to arise. Ecosystems such as sediments as a rule are not contaminated with a single pollutant but with complex mixtures of naturally occurring and anthropogenic compounds of unknown composition. Risk assessment of complex environmental contamination therefore requires a previous step of identification of potentially effective pollutants. Powerful tools to meet this requirement are bioassay-directed chemical analysis (Fernandez et al. 1992) and toxicity identification and evaluation (TIE) (Mount and Carnahan 1989, Mount 1989, Norberg-King et al. 1992). They combine biotests with biotest-directed fractionation and chemical analysis to a sequential procedure characterising and finally identifying those compounds causing measurable effects. Effect-directed identification of organic toxicants in sediment extracts is demonstrated using the small river of Spittelwasser in the industrial region of Bitterfeld (Sachsen-Anhalt) as an example (Fig. 1). (orig.) [German] Die Abschaetzung der Risiken durch Chemikalien, die bewusst oder unbewusst in die Umwelt eingebracht werden, stellt eine zentrale Aufgabe vorbeugenden Umweltschutzes dar. Diese Risikoanalyse verknuepft Wirkungs- und Expositionsanalyse, indem sie moegliche unerwuenschte Wirkungen der jeweiligen Chemikalie identifiziert, den Konzentrationsbereich ermittelt, in dem diese Wirkungen eintreten, und diesen mit der zu erwartenden Exposition des zu schuetzenden Systems in Beziehung setzt mit dem Ziel, eine

  15. Effects of silver nanoparticle (Ag NP on oxidative stress biomarkers in rat

    Directory of Open Access Journals (Sweden)

    Akram Ranjbar

    2014-04-01

    Full Text Available Objective(s: Nanotechnology and nanoparticles are increasingly recognized for their potential applications in aerospace engineering, nanoelectronics, and environmental remediation, medicine and consumer products. More importantly is the potential for the application of silver nanoparticles (Ag NPs in the treatment of diseases that require maintenance of circulating drug concentration or targeting of specific cells or organs the aim of this study was to investigate the possible protective role of Ag NP antioxidative biomarkers in rats. Ag NPs are used to investigate the potential risks for the environment and health. Materials and Methods: Rats received Ag NP, 5, 50, 250 and 500 mg/kg/day IP. After two week of treatment, the activity of enzymatic scavengers such as glutathione peroxidase (GPx, superoxide dismutase (SOD and total antioxidant capacity (TAC of blood samples were measured. Results: Ag NP in 5, 50, 250 and 500 mg/kg reduced activities of CAT, SOD and increased TAC in plasma. Conclusion: In this study, Ag NP with 500mg/kg induced activities of CAT, SOD and decreased TAC. It is concluded that antioxidative properties of Ag NP is dose dependent.

  16. Thermodynamic assessments of the Ag-Gd and Ag-Nd systems

    International Nuclear Information System (INIS)

    Wang, S.L.; Wang, C.P.; Liu, X.J.; Ishida, K.

    2009-01-01

    The phase diagrams and thermodynamic properties in the Ag-Re (Re: Gd, Nd) binary systems have been assessed by using the CALPHAD (Calculation of Phase Diagrams) method on the basis of the experimental data including the thermodynamic properties and phase equilibria. The Gibbs free energies of the liquid, bcc, fcc, dhcp and hcp phases were described by the subregular solution model with the Redlich-Kister equation, and those of the intermetallic compounds (Ag 51 Gd 14 , Ag 2 Gd, AgGd, Ag 51 Nd 14 , αAg 2 Nd, βAg 2 Nd and AgNd phases) in these two binary systems were described by the sublattice model. The thermodynamic parameters of each phase in the Ag-Re (Re: Gd, Nd) binary systems were obtained, and an agreement between the calculated results and experimental data was obtained in each binary system.

  17. Plasmonic Ag{sub 2}MoO{sub 4}/AgBr/Ag composite: Excellent photocatalytic performance and possible photocatalytic mechanism

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Zhongliao [College of Physics and Electronic Information, Anhui Key Laboratory of Energetic Materials, Huaibei Normal University, Huaibei, 235000 (China); Zhang, Jinfeng, E-mail: zjf_y2004@126.com [College of Physics and Electronic Information, Anhui Key Laboratory of Energetic Materials, Huaibei Normal University, Huaibei, 235000 (China); Lv, Jiali [College of Physics and Electronic Information, Anhui Key Laboratory of Energetic Materials, Huaibei Normal University, Huaibei, 235000 (China); Dai, Kai, E-mail: daikai940@chnu.edu.cn [College of Physics and Electronic Information, Anhui Key Laboratory of Energetic Materials, Huaibei Normal University, Huaibei, 235000 (China); Liang, Changhao [College of Physics and Electronic Information, Anhui Key Laboratory of Energetic Materials, Huaibei Normal University, Huaibei, 235000 (China); Key Laboratory of Materials Physics and Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, 230031 (China)

    2017-02-28

    Highlights: • Novel Ag{sub 2}MoO{sub 4}/AgBr/Ag photocatalyst was prepared. • Ag{sub 2}MoO{sub 4}/AgBr/Ag showed high photocatalytic activity. • Ag{sub 2}MoO{sub 4}/AgBr/Ag showed long reusable life. - Abstract: Plasmonic Ag{sub 2}MoO{sub 4}/AgBr/Ag composite is fabricated by in-situ ion exchange and reduction methods at room temperature. The samples are characterized by X-ray diffraction (XRD), UV–vis diffuse reflectance (DRS), energy-dispersive X-ray spectroscopy (EDS), scanning electron microscope (SEM) and photoluminescence (PL) measurements. The results show that butterfly-like Ag{sub 2}MoO{sub 4} nanosheets served as the precursor, and Ag{sub 2}MoO{sub 4}/AgBr/Ag is formed in phase transformation with MoO{sub 4}{sup 2−} displaced by Br{sup −}. The ternary Ag{sub 2}MoO{sub 4}/AgBr/Ag composite photocatalysts show greatly enhanced photocatalytic activity in photodegrading methylene blue (MB) under visible light irradiation compared with AgBr and Ag{sub 2}MoO{sub 4}. The pseudo-first-order rate constant k{sub app} of Ag{sub 2}MoO{sub 4}/AgBr/Ag is 0.602 min{sup −1}, which is 11.6 and 18.3 times as high as that of AgBr and Ag{sub 2}MoO{sub 4}, respectively. Meanwhile, the efficiency of degradation still kept 90% after ten times cyclic experiments. Eventually, possible photocatalytic mechanism was proposed.

  18. Ag diffusion in cubic silicon carbide

    International Nuclear Information System (INIS)

    Shrader, David; Khalil, Sarah M.; Gerczak, Tyler; Allen, Todd R.; Heim, Andrew J.; Szlufarska, Izabela; Morgan, Dane

    2011-01-01

    The diffusion of Ag impurities in bulk 3C-SiC is studied using ab initio methods based on density functional theory. This work is motivated by the desire to reduce transport of radioactive Ag isotopes through the SiC boundary layer in the Tristructural-Isotropic (TRISO) fuel pellet, which is a significant concern for the Very High Temperature Reactor (VHTR) nuclear reactor concept. The structure and stability of charged Ag and Ag-vacancy clusters in SiC are calculated. Relevant intrinsic SiC defect energies are also determined. The most stable state for the Ag impurity in SiC is found to be a Ag atom substituting on the Si sub-lattice and bound to a C vacancy. Bulk diffusion coefficients are estimated for different impurity states and values are all found to have very high activation energy. The impurity state with the lowest activation energy for diffusion is found to be the Ag interstitial, with an activation energy of approximately 7.9 eV. The high activation energies for Ag diffusion in bulk 3C-SiC cause Ag transport to be very slow in the bulk and suggests that observed Ag transport in this material is due to an alternative mechanism (e.g., grain boundary diffusion).

  19. Surface characterization of Ag/Titania adsorbents

    International Nuclear Information System (INIS)

    Samokhvalov, Alexander; Nair, Sachin; Duin, Evert C.; Tatarchuk, Bruce J.

    2010-01-01

    The Ag/Titania adsorbent for selective removal of the desulfurization-refractive polycyclic aromatic sulfur heterocycles (PASHs) from liquid hydrocarbon fuels was prepared, its total and the Ag specific surface area were determined and the surface reaction sites in the sorbent that may be active in the adsorptive selective desulfurization were characterized by several spectroscopic and surface science techniques. The sorbent contains Ag, Ti, O and spurious C on its surface, as by the XPS measurements. Silver is present as an oxide, as judged by the XPS Auger parameter (AP). The complementary electron spin resonance (ESR) spectroscopy confirms that the majority of Ag is present in the diamagnetic Ag 1+ form, with the minor concentration (∼0.1% of total Ag) present as Ag 2+ . The findings by XPS and ESR are confirmed by the XRD, UV-vis spectroscopy and thermodynamic considerations. The supported Ag is highly dispersed on the surface of the titania support, with the particle size of ∼30-60 A depending on Ag content, with an Ag specific surface area of ∼7-14 m 2 /g, vs. the total surface area of ∼114-58 m 2 /g.

  20. Blood Culture (For Parents)

    Science.gov (United States)

    ... Metabolic Panel (BMP) Blood Test: Complete Blood Count Basic Blood Chemistry Tests Getting a Blood Test (Video) Blood Test: Basic Metabolic Panel Blood Test: Comprehensive Metabolic Panel Blood ...

  1. Study of Ag+/PAA (polyacrylic acid) and Ag0/PAA aqueous system at equilibrium

    International Nuclear Information System (INIS)

    Keghouche, N.; Mostafavi, M.; Delcourt, M.O.

    1991-01-01

    When submitted to gamma radiation the system Ag + -PAA-water leads to clusters Ag 0 n /PAA (3 420 nm) interacting with the clusters. Potentiometric measurements carried out on Ag + solutions in the presence of PAA at various pH show that the deprotonated form (polyacrylate anion) is strongly bonded to Ag + , on the opposite of the protonated form of PAA. One of the oligomer clusters can be stabilized for more than one year. Studying it by infra-red spectrometry reveals important modifications in the vibration bands of the COO - group circa 1400 and 1600 cm -1 according to the bonding of PAA with Ag + or Ag 0 [fr

  2. [Relationship between HBeAg from HBsAg positive mothers and regulatory T cells in neonates and its influence on HBV intrauterine transmission].

    Science.gov (United States)

    Hao, H Y; Yang, Z Q; Xu, X X; Wang, X F; Wang, B; Shi, X H; Fu, Z D; Wang, B; Wang, S P

    2017-10-10

    Objective: To explore the relationship between HBeAg in HBsAg positive mothers and CD(4)(+)CD(25)(+) Foxp3 (+)regulatory T cells (Treg) in newborns, as well as how they would influence the increasing risk on HBV intrauterine transmission. Methods: We collected information on general demographic characteristics and delivery on 270 HBsAg positive mothers and their newborns from the Third People's Hospital of Taiyuan. Fluorescence quantitative polymerase chain reaction (FQ-PCR) and chemiluminescence immunoassay (CLIA) were used to detect HBV DNA and HBV serological markers in peripheral blood from both mothers and neonates. The expression of Treg and other immune cells in peripheral blood of neonates were detected with flow cytometry (FCM). Results: Maternal HBeAg positive rates were associated with an increased risk of intrauterine transmission ( OR =4.08, 95 %CI : 1.89-8.82). Rates of Treg in newborns born to HBsAg-positive mothers were higher than that of the negative group ( Z =2.29, P =0.022). Each pair of the subjects was assigned to five different groups according to the HBeAg titers of mothers. Frequencies of both Treg and HBeAg in newborns and HBV DNA in mothers between the above said 5 groups showed similar trends of changing patterns and the differences between groups were statistically significant(χ(2)=18.73, P mother's HBeAg titers were positively related to the percentage of Treg in their newborns ( r(s) =0.19, P =0.039). In addition, the frequencies of Treg were negatively correlated with pDC and CD(4)(+) T cell in their newborns ( r(s) =-0.21, P =0.017; r(s) =-0.23, P =0.009). Conclusion: HBeAg from HBsAg positive mothers might have inhibited the function of neonatal DC cells and T cells to reduce the immune response to HBV by up-regulating the proportion of Treg and finally increased the risk of HBV intrauterine transmission.

  3. Virus-specific immune response in HBeAg-negative chronic hepatitis B: relationship with clinical profile and HBsAg serum levels.

    Directory of Open Access Journals (Sweden)

    Elisabetta Loggi

    Full Text Available BACKGROUND AIMS: The immune impairment characterizing chronic hepatitis B (cHBV infection is thought to be the consequence of persistent exposure to viral antigens. However, the immune correlates of different clinical stages of cHBV and their relation with different levels of HBsAg have not been investigated. The aim of the present study was to evaluate the relationship between HBV-specific T cells response and the degree of in vivo HBV control and HBsAg serum levels in HBeAg-HBeAb+ cHBV. METHODS: Peripheral blood mononuclear cells from 42 patients with different clinical profiles (treatment-suppressed, inactive carriers and active hepatitis of cHBV, 6 patients with resolved HBV infection and 10 HBV-uninfected individuals were tested with overlapping peptides spanning the entire HBV proteome. The frequency and magnitude of HBV-specific T cell responses was assessed by IFNγ ELISPOT assay. Serum HBsAg was quantified with a chemiluminescent immunoassay. RESULTS: The total breadth and magnitude of HBV-specific T cell responses did not differ significantly between the four groups. However, inactive carriers targeted preferentially the core region. In untreated patients, the breadth of the anti-core specific T cell response was inversely correlated with serum HBsAg concentrations as well as HBV-DNA and ALT levels and was significantly different in patients with HBsAg levels either above or below 1000 IU/mL. The same inverse association between anti-core T cell response and HBsAg levels was found in treated patients. CONCLUSIONS: Different clinical outcomes of cHBV infection are associated with the magnitude, breadth and specificity of the HBV-specific T cell response. Especially, robust anti-core T cell responses were found in the presence of reduced HBsAg serum levels, suggesting that core-specific T cell responses can mediate a protective effect on HBV control.

  4. Polarization preservation in the AGS

    International Nuclear Information System (INIS)

    Ratner, L.G.

    1983-01-01

    The successful operation of a high energy polarized beam at the Argonne Zero Gradient Synchrotron (ZGS) with the concommitant development of depolarizing resonance correction techniques has led to the present project of commissioning such a beam at the Brookhaven Alternating Gradient Synchrotron (AGS). A description of the project was presented at the 1981 National Accelerator Conference. I would like to now present a more detailed description of how we plan to preserve the polarization during acceleration, and to present our game plan for tuning through some 50 resonances and reaching our goal of a 26 GeV polarized proton beam with greater than 60% polarization

  5. Ag nanoprisms with Ag₂S attachment.

    KAUST Repository

    Xiong, Shenglin; Xi, Baojuan; Zhang, Kang; Chen, Yifei; Jiang, Jianwen; Hu, Jiangyong; Zeng, Hua Chun

    2013-01-01

    Triangular Ag nanoprisms are a type of most-studied noble-metal nanostructures over the past decade owing to their special structural architecture and outstanding optical and catalytic properties for a wide range of applications. Nevertheless, in contrast to active research for the synthesis of phase-pure Ag nanoprisms, no asymmetric heterodimers containing Ag prisms have been developed so far, probably due to lack of suitable synthetic methods. Herein, we devise a simple ion-exchange method to synthesize Ag2S/Ag heterodimers at room temperature, through which Ag nanoprisms with controllable size and thickness can be fabricated. Formation chemistry and optical properties of the heterodimers have been investigated. These semiconductor/metal heterodimers have exhibited remarkable bactericidal activity to E. coli cells under visible light illumination.

  6. Flower-like Ag/AgCl microcrystals: Synthesis and photocatalytic activity

    International Nuclear Information System (INIS)

    Daupor, Hasan; Wongnawa, Sumpun

    2015-01-01

    Silver/silver chloride (Ag/AgCl) composites with a novel flower-like morphology were prepared via a hot precipitation assisted by the vinyl acetate monomer (VAM) route. An aqueous solution of AlCl 3 was mixed with the vinyl acetate monomer and acetic acid before adding a AgNO 3 solution at a temperature of 100 °C. The octapod shaped flower-like Ag/AgCl particles (or “flower-like Ag/AgCl” hereinafter) has eight petals each of which was about 7–11 μm in length. The flower-like octapods were formed by preferential overgrowth along the <111> directions of the cubic seeds. Detailed studies of the growth process at different AlCl 3 concentrations revealed that the concave cube developed into a Rubik's cube where eight corners grew further into the flower-like structures. The VAM and acetic acid concentration strongly affected the growth of the Ag/AgCl to the flower-like structure and their optimum concentrations were determined. The morphologies of these particles were carefully examined by scanning electron microscopy (SEM). The crystal structures and orientation relationship were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV–visible diffused reflectance spectroscopy (DRS). The flower-like Ag/AgCl microcrystals were tested for their photocatalytic degradation of orange G dye (OG) catalyzed by visible light. From comparative test runs, the flower-like Ag/AgCl exhibited better photocatalytic activity than simple and commercial Ag/AgCl particles. - Highlights: • Interesting transformation of microcrystals Ag/AgCl from concave cube via Rubik's cube to flower-like shape. • The first to use VAM as morphology control reagent. • High photocatalytic activity under visible light irradiation

  7. Evaluation of colloidal Ag and Ag-alloys as anode electrocatalysts for direct borohydride fuel cells

    Energy Technology Data Exchange (ETDEWEB)

    Atwan, Mohammed H.; Northwood, Derek O. [Mechanical, Auto, and Materials Engineering, University of Windsor, Windsor, N9B 3P4 (Canada); Gyenge, Elod L. [Chemical and Biological Engineering, The University of British Colombia, Vancouver, BC, V6T 1Z4 (Canada)

    2007-10-15

    In this study, colloidal silver and silver-alloys (Ag-Pt, Ag-Au, Ag-Ir, and Ag-Pd) prepared by the Boenneman technique were evaluated as anode catalysts for sodium borohydride oxidation using cyclic voltammetry (CV), chronoamperometry (CA), chronopotentiometry (CP) and rotating disk electrode (RDE) voltammetry. The CV results show that the colloidal Ag-alloys were electrochemically active towards borohydride oxidation with oxidation potentials ranging between -0.7 and 0.4 V vs. Hg/HgO (MOE). The most negative oxidation potential was recorded on Ag-Pt. CA results show that the steady state current density was highest on Ag-Pt, followed by Ag-Ir, Ag-Au, and Ag-Pd. The lowest overpotential was recorded on Ag-Ir for a current step change of 10mAcm{sup -2}. A significant temperature effect and a small rotation speed effect were found in the rotating disc voltammetry for all the investigated colloids. The highest peak current was recorded on Ag-Au, while the most negative peak potential was recorded on Ag-Ir. (author)

  8. Ameliorative role of nano-ceria against amine coated Ag-NP induced toxicity in Labeo rohita

    Science.gov (United States)

    Khan, Muhammad Saleem; Qureshi, Naureen Aziz; Jabeen, Farhat

    2018-03-01

    Silver nanoparticles (Ag-NPs) and its byproducts can spread pollution in aquatic habitat. Liver and gills are key target for toxicity. Oxidative stress, tissue alterations, and hemotoxicity are assumed to be associated with Ag-NPs in target animals. Cerium oxide nanoparticles (nano-ceria) show antioxidant potential in scavenging the free radicals generated in Ag-NP-induced oxidative stress. We determined ameliorated role of nano-ceria against Ag-NP-induced toxicity in fresh water Labeo rohita (L. rohita). Four groups were used in study including control, nano-ceria, Ag-NPs, and Ag-NPs + nano-ceria. Ag-NPs (30 mg l-1) and nano-ceria (50 µg kg-1) were given through water and prepared feed, respectively. The samples were taken after 28 days. Results demonstrated that pre-treatment of nano-ceria recovered L. rohita from Ag-NP-induced toxicity and oxidative stress. Nano-ceria pre-treatment actively mimics the activity of GST, GSH, CAT, and SOD. Furthermore, Ag-NPs' treatment caused severe inflammation and necrosis in hepatic parenchyma which leaded to congestion of blood in hepatic tissues. Accumulation of a yellow pigment in hepatic tissue was also seen due to necrosis of affected cells. In nano-ceria pre-treatment, there was no congestion in hepatic tissue. Vacuolization of cells and necrosis in some area was recorded in nano-ceria pre-treated group, but the gill and hepatic tissue showed improvement against Ag-NP-induced damage. Nano-ceria pre-treatment also improved hematological parameters in Ag-NP-treated fish. This study concluded that Ag-NP-induced toxicity in treated fish and pre-treatment of nano-ceria show ameliorative role.

  9. Evaluation of the highly sensitive chemiluminescent enzyme immunoassay "Lumipulse HBsAg-HQ" for hepatitis B virus screening.

    Science.gov (United States)

    Deguchi, Matsuo; Kagita, Masanori; Yoshioka, Nori; Tsukamoto, Hiroko; Takao, Miyuki; Tahara, Kazuko; Maeda, Ikuhiro; Hidaka, Yoh; Yamauchi, Satoshi; Kaneko, Atsushi; Miyakoshi, Hideo; Isomura, Mitsuo

    2017-10-06

    Ongoing efforts in the development of HBsAg detection kits are focused on improving sensitivity and specificity. The purpose of this study was to evaluate an improved, highly sensitive quantitative assay, "Lumipulse HBsAg-HQ", a chemiluminescent enzyme immunoassay designed for a fully automated instrument, the "Lumipulse G1200". Serum samples for reproducibility, dilution, correlation, sensitivity, and specificity studies were obtained from patients at the Osaka University Hospital. Seroconversion and sensitivity panels were purchased from a commercial vender. Subtype, sensitivity panels, and HBsAg recombinant proteins with one or two amino acid substitutions were prepared in-house. The coefficients of variation for the low, medium, and high concentration samples ranged from 1.93 to 2.55%. The HBsAg-HQ reagent for dilution testing showed good linearity in the 0.005-150 HBsAg IU/mL range and no prozone phenomenon. All 102 HBV carrier samples were positive by HBsAg-HQ, while other commercial reagents showed one or more to be negative. In the seroconversion panel, the 14-day blood sample was positive. The sensitivity against HBsAg-HQ "ad" and "ay" subtypes was 0.025 ng/mL. Comparisons among the HBsAg-HQ, HISCL, and Architect HBsAg reagents were performed using the Bland-Altman plot. Specificity for 1000 seronegative individuals was 99.7%. HBsAg-HQ detected 29 positive serum among 12 231 routinely obtained serum samples, which showed concentrations of 0.005-0.05 HBsAg IU/mL. According to these results, the Lumipulse HBsAg-HQ assay, with a highly sensitive limit of detection of 0.005 IU/mL, may facilitate the development of a better management strategy for a considerable proportion of infected patients. © 2017 Wiley Periodicals, Inc.

  10. Facile synthesis, structure, and properties of Ag{sub 2}S/Ag heteronanostructure

    Energy Technology Data Exchange (ETDEWEB)

    Sadovnikov, S. I., E-mail: sadovnikov@ihim.uran.ru; Gusev, A. I. [Ural Branch of the Russian Academy of Sciences, Institute of Solid State Chemistry (Russian Federation)

    2016-09-15

    Ag{sub 2}S/Ag heteronanostructure has been produced by a simple one-stage chemical deposition from aqueous solutions of silver nitrate, sodium sulfide, and sodium citrate with the use of monochromatic light irradiation. For simultaneous synthesis of Ag{sub 2}S and Ag nanoparticles, deposition has been performed from reaction mixtures with reduced sodium sulfide concentration. The size of Ag{sub 2}S and Ag nanoparticles is 45–50 and 15–20 nm, respectively. It is established that in the contact layer between silver sulfide and silver, nonconducting α-Ag{sub 2}S acanthite transforms into superionic β-Ag{sub 2}S argentite under the action of external electric field. The scheme of the operation of a resistive switch based on an Ag{sub 2}S/Ag heteronanostructure is proposed. The UV–Vis optical absorption spectra of colloidal solutions of Ag{sub 2}S/Ag heteronanostructures have been studied.Graphical Abstract.

  11. AgI/Ag3PO4 hybrids with highly efficient visible-light driven photocatalytic activity

    International Nuclear Information System (INIS)

    Katsumata, Hideyuki; Hayashi, Takahiro; Taniguchi, Masanao; Suzuki, Tohru; Kaneco, Satoshi

    2015-01-01

    Highlights: • AgI/Ag 3 PO 4 hybrid was prepared via an in situ anion-exchange method. • AgI/Ag 3 PO 4 displays the excellent photocatalytic activity under visible light. • AgI/Ag 3 PO 4 readily transforms to be Ag@AgI/Ag 3 PO 4 system. • h + and O 2 ·− play the major role in the AO 7 decolorization over AgI/Ag 3 PO 4 . • The activity enhancement is ascribed to a Z-scheme system composed of Ag 3 PO 4 , Ag and AgI. - Abstract: Highly efficient visible-light-driven AgI/Ag 3 PO 4 hybrid photocatalysts with different mole ratios of AgI were prepared via an in situ anion-exchange method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV–vis diffuse reflectance spectroscopy (DRS) and photoluminescence (PL) technique. Under visible light irradiation (>420 nm), the AgI/Ag 3 PO 4 photocatalysts displayed the higher photocatalytic activity than pure Ag 3 PO 4 and AgI for the decolorization of acid orange 7 (AO 7). Among the hybrid photocatalysts, AgI/Ag 3 PO 4 with 80% of AgI exhibited the highest photocatalytic activity for the decolorization of AO 7. X-ray photoelectron spectroscopy (XPS) results revealed that AgI/Ag 3 PO 4 readily transformed to be Ag@AgI/Ag 3 PO 4 system while the photocatalytic activity of AgI/Ag 3 PO 4 remained after 5 recycling runs. In addition, the quenching effects of different scavengers displayed that the reactive h + and O 2 ·− play the major role in the AO 7 decolorization. The photocatalytic activity enhancement of AgI/Ag 3 PO 4 hybrids can be ascribed to the efficient separation of electron–hole pairs through a Z-scheme system composed of Ag 3 PO 4 , Ag and AgI, in which Ag nanoparticles act as the charge separation center

  12. The AGS Booster vacuum systems

    International Nuclear Information System (INIS)

    Hseuh, H.C.

    1989-01-01

    The AGS Booster is a synchrotron for the acceleration of both protons and heavy ions. The design pressure of low 10 -11 mbar is required to minimize beam loss of the partially stripped heavy ions. To remove contaminants and to reduce outgassing, the vacuum chambers and the components located in them will be chemically cleaned, vacuum fired, baked then treated with nitric oxide. The vacuum sector will be insitu baked to a minimum of 200 degree C and pumped by the combination of sputter ion pumps and titanium sublimation pumps. This paper describes the design and the processing of this ultra high vacuum system, and the performance of some half-cell vacuum chambers. 9 refs., 7 figs

  13. Recent hypernuclear research at the Brookhaven AGS

    International Nuclear Information System (INIS)

    Chrien, R.E.

    1985-01-01

    Recent AGS experiments contributing to our knowledge of hypernuclei are reviewed. These experiments have suggested new areas of research on hypernuclei. With the proper beam line facilities, the AGS will be able to perform experiments in these areas and provide a transition to the future era of ''kaon factories''. 20 refs., 14 figs

  14. AGS Spallation Target Experiment (ASTE) Collaboration

    International Nuclear Information System (INIS)

    Oyama, Yukio

    1999-01-01

    An experiment on mercury spallation target with high energy proton beam, called as the AGS Spallation Target Experiment (ASTE) Collaboration, has been performed at Alternating Gradient Synchrotron (AGS) of Brookhaven National Laboratory (BNL) in USA, in cooperation among the laboratories in Japan, Europe and USA. The experimental setup, scope and preliminary results are presented in the paper. (author)

  15. AgBioData | National Agricultural Library

    Science.gov (United States)

    . The GDV is being developed to house and integrate genomic, genetic and breeding data for blueberry collaborative effort to safeguard the genetic diversity of agriculturally important plants. Ag Data Commons html Data Commons Beta Toggle navigation Datasets About About the Ag Data Commons Data Submission Manual

  16. Photocatalytic oxidation removal of Hg"0 using ternary Ag/AgI-Ag_2CO_3 hybrids in wet scrubbing process under fluorescent light

    International Nuclear Information System (INIS)

    Zhang, Anchao; Zhang, Lixiang; Chen, Xiaozhuan; Zhu, Qifeng; Liu, Zhichao; Xiang, Jun

    2017-01-01

    Highlights: • Ag/AgI-Ag_2CO_3 hybrids were employed for Hg"0 removal under fluorescent light. • Superoxide radical (·O_2"−) played a key role in Hg"0 removal. • NO exhibited a significant effect on Hg"0 removal in comparison to SO_2. • The mechanism for enhanced Hg"0 removal over Ag/AgI-Ag_2CO_3 was proposed. - Abstract: A series of ternary Ag/AgI-Ag_2CO_3 photocatalysts synthesized using a facile coprecipitation method were employed to investigate their performances of Hg"0 removal in a wet scrubbing reactor. The hybrids were characterized by N_2 adsorption-desorption, XRD, SEM-EDS, HRTEM, XPS, DRS and ESR. The photocatalytic activities of Hg"0 removal were evaluated under fluorescent light. The results showed that AgI content, fluorescent light irradiation, reaction temperature all showed significant influences on Hg"0 removal. NO exhibited significant effect on Hg"0 removal in comparison to SO_2. Among these ternary Ag/AgI-Ag_2CO_3 hybrids, Ag/AgI(0.1)-Ag_2CO_3 showed the highest Hg"0 removal efficiency, which could be ascribed to the effective separation of photogenerated electron-hole pairs between AgI and Ag_2CO_3 and the surface plasmon resonance (SPR) effect in the visible region by metallic silver nanoparticles (Ag"0 NPs). The trapping studies of reactive radicals showed that the superoxide radicals (·O_2"−) may play a key role in Hg"0 removal under fluorescent light. According to the experimental and characterization results, a possible photocatalytic oxidation mechanism for enhanced Hg"0 removal over Ag/AgI(0.1)-Ag_2CO_3 hybrid under fluorescent light was proposed.

  17. Evaluation of genotoxic effect of silver nanoparticles (Ag-Nps) in vitro and in vivo

    International Nuclear Information System (INIS)

    Tavares, Priscila; Balbinot, Fernanda; Martins de Oliveira, Hugo; Elibio Fagundes, Gabriela; Venâncio, Mireli; Vieira Ronconi, João Vitor; Merlini, Aline; Streck, Emílio L.; Marques da Silva, Paula; Moraes de Andrade, Vanessa

    2012-01-01

    Silver nanoparticles (Ag-NPs) are the most prominent nanoproducts. Due to their antimicrobial activity, they have been incorporated in different materials, such as catheters, clothes, electric home appliance, and many others. The genotoxicity of Ag-NPs (5–45 nm), in different concentrations and times of exposure, was evaluated by the comet assay in in vitro and in vivo conditions, respectively, using human peripheral blood and Swiss mice. The results showed the genotoxic effect of Ag-NPs in vitro, in all the doses tested in the initial hour of exposure, possibly through the reactive oxygen species generation. Nevertheless, the values for this damage decrease with time, indicating that the DNA may have been restored by the repair system. In the in vivo conditions, we found no genotoxicity of Ag-NPs in any hour of exposure and any dose investigated, which can be attributed to the activation of a cellular antioxidant network and the hydrophobic nature of Ag-NPs. Now, it is absolutely necessary to investigate the role of Ag-NPs in different cell lines in vivo.

  18. Correlation of HBV DNA PCR and HBeAg in hepatitis carriers

    International Nuclear Information System (INIS)

    Hussain, A.B.; Karamat, K.A.; Kazmi, S.Y.; Anwar, M.; Tariq, W.Z.

    2004-01-01

    Objective: To correlate hepatitis B HBV DNA polymerase chain reaction (PCR) results with HBeAg and serum ala- nine transferase (ALT) in carriers. Materials and Methods: Fifty hepatitis B carriers, with known HBsAg positive serostatus, raised serum ALT and detectable HBV DNA, were selected out of the patients reporting at AFIP for their blood test for HBV DNA. HBV DNA testing in these cases was carried out using PCR kit of Accugen-USA. After confirmation of their carrier status and raised serum ALT levels, the sera were tested for HBeAg and results of HBeAg testing were correlated with those of HBV DNA testing. Results: Out of the total 50 HBV DNA PCR positive hepatitis B carriers, 48 samples were positive for HBeAg. All the 50 HBV DNA positive cases had raised serum ALT levels. Conclusion: In case of non-availability of facility for HBV PCR, detectable HBeAg should be taken as a surrogate marker for HBV DNA in hepatitis B carriers with raised serum ALT. (author)

  19. Antimicrobial and anticancer activity of AgNPs coated with Alphonsea sclerocarpa extract.

    Science.gov (United States)

    Doddapaneni, Suman Joshi D S; Amgoth, Chander; Kalle, Arunasree M; Suryadevara, Surya Narayana; Alapati, Krishna Satya

    2018-03-01

    The synthesis and characterization of an aggregate of AgNPs coated with plant extract (PE) from Alphonsea sclerocarpa and its significant antimicrobial activity and inhibition on K562 (blood cancer) cells have been appended in the article. Synthesis of aggregate [(AgNPs)-(PE)] has been followed by a facile eco-friendly approach without using any harmful chemicals. The morphology of an aggregate [(AgNPs)-(PE)] was confirmed by TEM and SEM microscopic characterizations. Properties like solid state, the presence of functional groups, and elemental composition have been characterized through the XRD, FTIR, and EDAX. The biocompatibility of synthesized aggregate of [(AgNPs)-(PE)] was confirmed by the MTT assay. An in vitro cell (HEK293)-based studies were performed for the biocompatibility tests and it is found that the aggregate [(AgNPs)-(PE)] is not harmful to normal/healthy cells. Even though A. sclerocarpa show the antimicrobial (antibacterial and antifungal) activity, it has been further enhanced with the developed aggregate of [(AgNPs)-(PE)]. Furthermore, it has been extended to examine the cellular inhibition on K562 cells and obtained > 75% cell inhibition for 24 h treated cells.

  20. Evaluation of genotoxic effect of silver nanoparticles (Ag-Nps) in vitro and in vivo

    Energy Technology Data Exchange (ETDEWEB)

    Tavares, Priscila; Balbinot, Fernanda; Martins de Oliveira, Hugo; Elibio Fagundes, Gabriela [PPGCS, Universidade do Extremo Sul Catarinense, Laboratorio de Biologia Celular e Molecular (Brazil); Venancio, Mireli; Vieira Ronconi, Joao Vitor; Merlini, Aline [Universidade do Extremo Sul Catarinense, Laboratorio de Sintese de Complexos Multifuncionais (Brazil); Streck, Emilio L. [Programa de Pos-Graduacao em Ciencias da Saude, Unidade Academica de Ciencias da Saude, Universidade do Extremo Sul Catarinense, Laboratorio de Fisiopatologia Experimental (Brazil); Marques da Silva, Paula [Universidade do Extremo Sul Catarinense, Laboratorio de Sintese de Complexos Multifuncionais (Brazil); Moraes de Andrade, Vanessa, E-mail: vmoraesdeandrade@yahoo.com.br [PPGCS, Universidade do Extremo Sul Catarinense, Laboratorio de Biologia Celular e Molecular (Brazil)

    2012-03-15

    Silver nanoparticles (Ag-NPs) are the most prominent nanoproducts. Due to their antimicrobial activity, they have been incorporated in different materials, such as catheters, clothes, electric home appliance, and many others. The genotoxicity of Ag-NPs (5-45 nm), in different concentrations and times of exposure, was evaluated by the comet assay in in vitro and in vivo conditions, respectively, using human peripheral blood and Swiss mice. The results showed the genotoxic effect of Ag-NPs in vitro, in all the doses tested in the initial hour of exposure, possibly through the reactive oxygen species generation. Nevertheless, the values for this damage decrease with time, indicating that the DNA may have been restored by the repair system. In the in vivo conditions, we found no genotoxicity of Ag-NPs in any hour of exposure and any dose investigated, which can be attributed to the activation of a cellular antioxidant network and the hydrophobic nature of Ag-NPs. Now, it is absolutely necessary to investigate the role of Ag-NPs in different cell lines in vivo.

  1. Machinability of experimental Ti-Ag alloys.

    Science.gov (United States)

    Kikuchi, Masafumi; Takahashi, Masatoshi; Okuno, Osamu

    2008-03-01

    This study investigated the machinability of experimental Ti-Ag alloys (5, 10, 20, and 30 mass% Ag) as a new dental titanium alloy candidate for CAD/CAM use. The alloys were slotted with a vertical milling machine and carbide square end mills under two cutting conditions. Machinability was evaluated through cutting force using a three-component force transducer fixed on the table of the milling machine. The horizontal cutting force of the Ti-Ag alloys tended to decrease as the concentration of silver increased. Values of the component of the horizontal cutting force perpendicular to the feed direction for Ti-20% Ag and Ti-30% Ag were more than 20% lower than those for titanium under both cutting conditions. Alloying with silver significantly improved the machinability of titanium in terms of cutting force under the present cutting conditions.

  2. 111Ag in the Chernobyl fallout

    International Nuclear Information System (INIS)

    Winkler, R.; Rosner, G.; Hoetzl, H.

    1989-01-01

    In the course of a re-evalution of the gamma-ray spectra of air filter samples collected immediately after Chernobyl accident at Munich-Neuherberg 111 Ag has been found to contribute significantly to the total activity within the first days of the Chernobyl fallout. The maximum air concentration was measured on 1 May 1986 to be 5.4 Bq/m 3 compared with 9.7 Bq 137 Cs per m 3 . Referred to this date the total activity deposition to ground was 12±3 kBq 111 Ag per m 2 . Referred to 26 April 1986 the 111 Ag to 110m Ag ratio was found to be 53±3 and the 111 Ag to 137 Cs ratio was 1.0±0.1. It is estimated that the cesium isotopes were depleted during release and atmospheric transport by a factor of about 2 compared with the silver isotopes. (orig.)

  3. Blood transfusions

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/patientinstructions/000431.htm Blood transfusions To use the sharing features on this page, ... There are many reasons you may need a blood transfusion: After knee or hip replacement surgery, or other ...

  4. Blood Types

    Science.gov (United States)

    ... positive or Rh-negative blood may be given to Rh-positive patients. The rules for plasma are the reverse: ... ethnic and racial groups have different frequency of the main blood types in their populations. Approximately ...

  5. Association of social class in HBsAg and hepatocellular carcinoma

    International Nuclear Information System (INIS)

    Pervez, T.; Anwar, M. S.

    2001-01-01

    Objective: To find out the social class difference in relation to frequency of HBsAg and hepatocellular carcinoma in our population. Design: An analytical study. Place and Duration of Study: This study was conducted in Oncology Department, Services Hospital, Lahore from December 1997 to December 2000. Subjects and Methods: The HBsAg positive voluntary and apparently healthy blood donors were grouped into three, based on monthly income. Lower socioeconomic group and had monthly income less than 3,000 Pakistani rupees, middle socioeconomic group had monthly income between 3,000-10,000 rupees and upper socioeconomic group had income of more than 10,000 Pakistani rupees. On the same pattern patients suffering from hepatocellular carcinoma coming for treatment were also grouped. During this period, 1000 blood donors were screened for HBsAg and 95 biopsy proven liver cancer by causes were treated. Medical and demographic data of all subjects were recorded. HBsAg test was performed immuno-chromatographic technique using Daina Screen HBsAg kit manufactured by Dainabot Co. Ltd, Tokyo, Japan. Results: Patients from lower and middle social class had higher percentage (80% and 75%) of hepatocellular carcinoma as compared to higher social class (66.6%). In the healthy asymptomatic blood donors lower social class had higher (13.76%) HBsAg positively as compared to middle social class (11.25%) and higher social class (8.06%). Conclusion: Preventive measures should be taken in identifying and reducing factors predisposing high frequency of these conditions. (author)

  6. Coating of hydroxyapatite doped Ag on commercially pure titanium surface; Recobrimento de hidroxiapatita dopada com Ag sobre superficie de titanio comercialmente puro

    Energy Technology Data Exchange (ETDEWEB)

    Vieira, Jonas de Oliveira; Vercik, Luci Cristina de Oliveira; Rigo, Eliana Cristina da Silva, E-mail: jonasvieira@usp.br [Universidade de Sao Paulo (USP), SP (Brazil)

    2012-07-01

    This paper presents results of bioactive coating on commercially pure titanium surface (CpTi) doped with Ag ions. The coating consists of 3 steps, in step 1- surface chemical treatment of the samples with NaOH, step 2 - immersing the substrate in question in a sodium silicate solution (SS) to the nucleation and step 3 - reimmersion these substrates in synthetic solution that simulates the blood serum for precipitation and growth of apatite layer. After the coating step the AgNO{sub 3} substrates were immersed in solutions with concentrations of 20 ppm and 100 ppm at 37 ° C for 48h. The substrates were characterized by scanning electron microscopy (SEM), infrared spectroscopy (IR) and X-ray diffraction (XRD). By the results verified the formation of an apatite layer with aspects of cells, on the surface of CpTi. The increase in Ag concentration causes an increase in Ag amount doped in apatite layer. With the results we concluded that it is possible to obtain an apatite layer on a metal surface as the CpTi doped with Ag ions.

  7. Thermodynamic properties of solid solutions in the system Ag2S–Ag2Se

    International Nuclear Information System (INIS)

    Pal’yanova, G.A.; Chudnenko, K.V.; Zhuravkova, T.V.

    2014-01-01

    We have summarized experimental data on the phase diagram of the system Ag 2 S–Ag 2 Se. Standard thermodynamic functions of four solid solutions in this system have been calculated using the model of regular and subregular solutions: a restricted fcc solid solution γ-Ag 2 S-Ag 2 S 1−x Se x (x 2 S–Ag 2 Se, monoclinic solid solution (α) from Ag 2 S to Ag 2 S 0.4 Se 0.6 , and orthorhombic solid solution (α) from Ag 2 S 0.3 Se 0.7 to the Ag 2 Se. G mix and S mix have been evaluated using the subregular model for asymmetric solution for the region Ag 2 S 0.4 Se 0.6 –Ag 2 S 0.3 Se 0.7 . The thermodynamic data can be used for modeling in complex natural systems and in matters of semiconductor materials

  8. Ag-related alloy formation and magnetic phases for Ag/Co/Ir(111) ultrathin films

    International Nuclear Information System (INIS)

    Tsay, Jyh-Shen; Tsai, Du-Cheng; Chang, Cheng-Hsun-Tony; Chen, Wei-Hsiang

    2013-01-01

    The Kerr intensity versus the Ag thickness for Ag grown on the top of Co/Ir(111) exhibits an oscillating behavior with a period around one monolayer which should be due to the morphological change related electronic structure differences of the Ag layer. From systematical investigations of Ag/Co/Ir(111) films with the Co layer thinner than 4 monolayers at temperatures below 900 K, a magnetic phase diagram has been established. As the annealing temperature increases for Ag/Co/Ir(111) films, enhancements of the coercive force occur in both the polar and longitudinal configurations due to the intermixing of Ag and Co at the interface and the formation of Co–Ir alloy. The disappearance of ferromagnetism is mainly attributed to the reduced atomic percent of cobalt in Co–Ir alloy, the lowered Curie temperature by a reduction of the thickness of magnetic layers, and the intermixing of Ag and Co at the Ag/Co interface. - Highlights: • An oscillating behavior occurs due to the morphological change for Ag on Co/Ir(111). • A magnetic phase diagram has been established for Ag/Co/Ir(111). • Some Ag atoms intermix with the underlying Co layer at high temperatures. • Polar coercive force is enhanced due to the compositional change

  9. Antibacterial biodegradable Mg-Ag alloys

    Directory of Open Access Journals (Sweden)

    D Tie

    2013-06-01

    Full Text Available The use of magnesium alloys as degradable metals for biomedical applications is a topic of ongoing research and the demand for multifunctional materials is increasing. Hence, binary Mg-Ag alloys were designed as implant materials to combine the favourable properties of magnesium with the well-known antibacterial property of silver. In this study, three Mg-Ag alloys, Mg2Ag, Mg4Ag and Mg6Ag that contain 1.87 %, 3.82 % and 6.00 % silver by weight, respectively, were cast and processed with solution (T4 and aging (T6 heat treatment.The metallurgical analysis and phase identification showed that all alloys contained Mg4Ag as the dominant β phase. After heat treatment, the mechanical properties of all Mg-Ag alloys were significantly improved and the corrosion rate was also significantly reduced, due to presence of silver. Mg(OH2 and MgO present the main magnesium corrosion products, while AgCl was found as the corresponding primary silver corrosion product. Immersion tests, under cell culture conditions, demonstrated that the silver content did not significantly shift the pH and magnesium ion release. In vitro tests, with both primary osteoblasts and cell lines (MG63, RAW 264.7, revealed that Mg-Ag alloys show negligible cytotoxicity and sound cytocompatibility. Antibacterial assays, performed in a dynamic bioreactor system, proved that the alloys reduce the viability of two common pathogenic bacteria, Staphylococcus aureus (DSMZ 20231 and Staphylococcus epidermidis (DSMZ 3269, and the results showed that the killing rate of the alloys against tested bacteria exceeded 90%. In summary, biodegradable Mg-Ag alloys are cytocompatible materials with adjustable mechanical and corrosion properties and show promising antibacterial activity, which indicates their potential as antibacterial biodegradable implant materials.

  10. Blood Conservation.

    Science.gov (United States)

    Martin, Jeremiah T; Ferraris, Victor A

    2015-01-01

    Patient blood management requires multi-modality and multidisciplinary collaboration to identify patients who are at increased risk of requiring blood transfusion and therefore decrease exposure to blood products. Transfusion is associated with poor postoperative outcomes, and guidelines exist to minimize transfusion requirements. This review highlights recent studies and efforts to apply patient blood management across disease processes and health care systems. Copyright © 2015 Elsevier Inc. All rights reserved.

  11. Hepatitis B Viral Markers in Surface Antigen Negative Blood Donors ...

    African Journals Online (AJOL)

    Of the 20 who were anti-HBc positive, seven had tattoo/traditional marks on their body and one had previous history of blood transfusion. Conclusion: This study has shown that some potential blood units containing HBV are being transfused to patients unknowingly by screening for HBsAg only. Screening for other markers ...

  12. Studies on electronic structure of interfaces between Ag and gelatin for stabilization of Ag nanoparticles

    International Nuclear Information System (INIS)

    Tani, Tadaaki; Uchida, Takayuki

    2015-01-01

    Extremely high stability of Ag nanoparticles in photographic materials has forced us to study the electronic structures of the interfaces between thin layers of Ag, Au, and Pt and their surface membranes in ambient atmosphere by photoelectron yield spectroscopy in air and Kelvin probe method. Owing to the Fermi level equalization between a metal layer and a membrane coming from air, the electron transfer took place from the membrane to Pt and Au layers and from an Ag layer to the membrane, giving the reason for poor stability of Ag nanoparticles in air. The control of the Fermi level of an Ag layer with respect to that of a gelatin membrane in air could be widely made according to Nernst's equation by changing the pH and pAg values of an aqueous gelatin solution used to form the membrane, and thus available to stabilize Ag nanoparticles in a gelatin matrix. (author)

  13. Synthesis and characterizations of AgSCN nanospheres using AgCl as the precursor

    International Nuclear Information System (INIS)

    Yang Ming; Ma Jing

    2009-01-01

    Nanospheres of AgSCN with an average radius of 30-80 nm have been prepared by a simple reaction between AgCl suspension and KSCN in the presence of gelatin. Gelatin played a decisive role as an inhibitor of the direct attack of SCN - ions to AgCl surfaces and coagulation of the growing AgSCN in producing the spherical AgSCN nanoparticles. The products were characterized by X-ray powder diffraction, transmission electron microscopy and X-ray photoelectron spectra techniques. The electrical conductivity of thin films of as-prepared AgSCN nanoparticles and polyethylene oxide (PEO) at room temperature was measured. The maximum value of electrical conductivity of as-prepared AgSCN-PEO was 1.53 x 10 -5 S cm -1 .

  14. Au, Ag and Au:Ag colloidal nanoparticles synthesized by pulsed laser ablation as SERS substrates

    Directory of Open Access Journals (Sweden)

    M. Vinod

    2014-12-01

    Full Text Available Chemically pure colloidal suspensions of gold and silver nanoparticles were synthesized using pulsed laser ablation. The dependence of laser fluence on the surface plasmon characteristics of the nanoparticles was investigated. Au:Ag colloidal suspensions were prepared by mixing highly monodisperse Au and Ag nanocolloids. The plasmon band of these mixtures was found to be highly sensitive to Au:Ag concentration ratio and wavelength of the laser beam used in the ablation process. The Au:Ag mixture consists of almost spherical shaped nanostructures with a tendency to join with adjacent ones. The surface enhanced Raman scattering activity of the Au, Ag and Au:Ag colloidal suspensions was tested using crystal violet as probe molecules. Enhancement in Raman signal obtained with Au:Ag substrates was found to be promising and strongly depends on its plasmon characteristics.

  15. Preparation and Characterization of γ-AgI in Superionic Composite Glasses (AgIx(AgPO31-x

    Directory of Open Access Journals (Sweden)

    S. Suminta

    2007-07-01

    Full Text Available The γ-AgI phase was stabilized at room temperature in the composites glasses (AgIx(AgPO31-x with x = 0.6 and 0.7 via rapid quenching of their molten mixture. The measurement of the crystal structure has been carried out using an X-ray Difractometer at the Physics Departement of Ibaraki University, Japan. The micro strain and crystal size are derived from Hall’s equation. The X-ray diffraction pattern shows some Bragg peaks that correspond to the crystalline γ-AgI. By increasing the concentration of AgI, the peak width becomes more narrow and the position shifts to the higher angle. This indicates that the crystalline size and microstrain are increasing. The increase of micro strain (η, and particle size (D will increase the ionic mobility, thus increasing the ionic conductivity. It is concluded that solidification process on melt AgI into glass matrix AgPO3 not only decreases the micro strain and the particle size, but it also increases the ionic conductivity.

  16. Visible light driven photocatalysis and antibacterial activity of AgVO{sub 3} and Ag/AgVO{sub 3} nanowires

    Energy Technology Data Exchange (ETDEWEB)

    Singh, Anamika [Department of Life Sciences, University of Mumbai, Santacruz (E), Mumbai 400 098 (India); Dutta, Dimple P., E-mail: dimpled@barc.gov.in [Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085 (India); Ballal, A. [Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai 400 085 (India); Tyagi, A.K. [Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085 (India); Fulekar, M.H. [School of Environment and Sustainable Development, Central University of Gujarat, Gandhinagar 382 030, Gujarat (India)

    2014-03-01

    Graphical abstract: - Highlights: • Ag/AgVO{sub 3} and pure AgVO{sub 3} nanowires synthesized by sonochemical process. • Characterization done using XRD, SEM, TEM, EDX and BET analysis. • Visible light degradation of RhB by Ag/AgVO{sub 3} within 45 min. • Antibacterial activity of Ag/AgVO{sub 3} demonstrated. - Abstract: Ag/AgVO{sub 3} nanowires and AgVO{sub 3} nanorods were synthesized in aqueous media via a facile sonochemical route. The as-synthesized products were characterized by X-ray diffraction, Brunauer–Emmett–Teller surface area analysis, scanning electron microscopy together with an energy dispersion X-ray spectrum analysis, transmission electron microscopy and UV–vis diffuse reflectance spectroscopy. The results revealed that inert atmosphere promotes the formation of Ag/AgVO{sub 3} nanowires. The photocatalytic studies revealed that the Ag/AgVO{sub 3} nanowires exhibited complete photocatalytic degradation of Rhodamine B within 45 min under visible light irradiation. The antibacterial activity of Ag/AgVO{sub 3} nanowires was tested against Escherechia coli and Bacillus subtilis. The minimum growth inhibitory concentration value was found to be 50 and 10 folds lower than for the antibiotic ciprofloxacin for E. coli and B. subtilis, respectively. The antibacterial properties of the β-AgVO{sub 3} nanorods prove that in case of the Ag dispersed Ag/AgVO{sub 3} nanowires, the enhanced antibacterial action is also due to contribution from the AgVO{sub 3} support.

  17. Cord Blood

    Directory of Open Access Journals (Sweden)

    Saeed Abroun

    2014-05-01

    Full Text Available   Stem cells are naïve or master cells. This means they can transform into special 200 cell types as needed by body, and each of these cells has just one function. Stem cells are found in many parts of the human body, although some sources have richer concentrations than others. Some excellent sources of stem cells, such as bone marrow, peripheral blood, cord blood, other tissue stem cells and human embryos, which last one are controversial and their use can be illegal in some countries. Cord blood is a sample of blood taken from a newborn baby's umbilical cord. It is a rich source of stem cells, umbilical cord blood and tissue are collected from material that normally has no use following a child’s birth. Umbilical cord blood and tissue cells are rich sources of stem cells, which have been used in the treatment of over 80 diseases including leukemia, lymphoma and anemia as bone marrow stem cell potency.  The most common disease category has been leukemia. The next largest group is inherited diseases. Patients with lymphoma, myelodysplasia and severe aplastic anemia have also been successfully transplanted with cord blood. Cord blood is obtained by syringing out the placenta through the umbilical cord at the time of childbirth, after the cord has been detached from the newborn. Collecting stem cells from umbilical blood and tissue is ethical, pain-free, safe and simple. When they are needed to treat your child later in life, there will be no rejection or incompatibility issues, as the procedure will be using their own cells. In contrast, stem cells from donors do have these potential problems. By consider about cord blood potency, cord blood banks (familial or public were established. In IRAN, four cord blood banks has activity, Shariati BMT center cord blood bank, Royan familial cord blood banks, Royan public cord blood banks and Iranian Blood Transfusion Organ cord blood banks. Despite 50,000 sample which storage in these banks, but the

  18. Thermal expansion properties of Bi-2212 in Ag or an Ag-alloy matrix

    International Nuclear Information System (INIS)

    Tenbrink, J.; Krauth, H.

    1994-01-01

    The thermal expansion properties of polycrystalline Bi 2 Sr 2 Ca 1 Cu 2 O 8+x melt-processed bulk specimens, and Bi 2 Sr 2 Ca 1 Cu 2 O 8+x monocore as well as multifilamentary round wires in Ag or Ag-alloy matrix have been investigated over the temperature range from -150 to 800 degrees C. Although the thermal expansion of Bi 2 Sr 2 Ca 1 Cu 2 O 8+x is distinctly lower compared with Ag, the thermal expansion properties of the Bi 2 Sr 2 Ca 1 Cu 2 O 8+x -Ag or AgNiMg-alloy composite conductors are essentially governed by the matrix material. The thermal expansion of the encountered oxide-dispersion-strengthened AgNiMg alloys is only slightly lower compared with that of pure Ag. Therefore the thermal expansion of all investigated Bi 2 Sr 2 Ca 1 Cu 2 O 8+x -Ag or Ag-alloy composite wires was found to be close to that of pure Ag. The reason for this striking behaviour is shown to be related to a surprisingly low elastic modulus of the polycrystalline Bi-2212 wire cores of the order of 10 to a maximum 40 GPa. (author)

  19. Nanotoxicity of silver nanoparticles to red blood cells: size dependent adsorption, uptake, and hemolytic activity.

    Science.gov (United States)

    Chen, Li Qiang; Fang, Li; Ling, Jian; Ding, Cheng Zhi; Kang, Bin; Huang, Cheng Zhi

    2015-03-16

    Silver nanoparticles (AgNPs) are increasingly being used as antimicrobial agents and drug carriers in biomedical fields. However, toxicological information on their effects on red blood cells (RBCs) and the mechanisms involved remain sparse. In this article, we examined the size dependent nanotoxicity of AgNPs using three different characteristic sizes of 15 nm (AgNPs15), 50 nm (AgNPs50), and 100 nm (AgNPs100) against fish RBCs. Optical microscopy and transmission electron microscopy observations showed that AgNPs exhibited a size effect on their adsorption and uptake by RBCs. The middle sized AgNPs50, compared with the smaller or bigger ones, showed the highest level of adsorption and uptake by the RBCs, suggesting an optimal size of ∼50 nm for passive uptake by RBCs. The toxic effects determined based on the hemolysis, membrane injury, lipid peroxidation, and antioxidant enzyme production were fairly size and dose dependent. In particular, the smallest sized AgNPs15 displayed a greater ability to induce hemolysis and membrane damage than AgNPs50 and AgNPs100. Such cytotoxicity induced by AgNPs should be attributed to the direct interaction of the nanoparticle with the RBCs, resulting in the production of oxidative stress, membrane injury, and subsequently hemolysis. Overall, the results suggest that particle size is a critical factor influencing the interaction between AgNPs and the RBCs.

  20. Agent planning in AgScala

    Science.gov (United States)

    Tošić, Saša; Mitrović, Dejan; Ivanović, Mirjana

    2013-10-01

    Agent-oriented programming languages are designed to simplify the development of software agents, especially those that exhibit complex, intelligent behavior. This paper presents recent improvements of AgScala, an agent-oriented programming language based on Scala. AgScala includes declarative constructs for managing beliefs, actions and goals of intelligent agents. Combined with object-oriented and functional programming paradigms offered by Scala, it aims to be an efficient framework for developing both purely reactive, and more complex, deliberate agents. Instead of the Prolog back-end used initially, the new version of AgScala relies on Agent Planning Package, a more advanced system for automated planning and reasoning.

  1. A Flying Wire System in the AGS

    International Nuclear Information System (INIS)

    Huang, H.; Buxton, W.; Mahler, G.; Marusic, A.; Roser, T.; Smith, G.; Syphers, M.; Williams, N.; Witkover, R.

    1999-01-01

    As the AGS prepares to serve as the injector for RHIC, monitoring and control of the beam transverse emittance become a major and important topic. Before the installation of the flying wire system, the emittance was measured with ionization profile monitors in the AGS, which require correction for space charge effects. It is desirable to have a second means of measuring profile that is less dependent on intensity. A flying wire system has been installed in the AGS recently to perform this task. This paper discusses the hardware and software setup and the capabilities of the system

  2. Operation of the AGS polarized beam

    International Nuclear Information System (INIS)

    Ahrens, L.A.

    1988-01-01

    A polarized proton physics run took place during January, 1988, at the Brookhaven AGS. It is the purpose of this paper to review the tune-up period preceding that run. This was the third such run at the AGS; the others occurred in June of 1984 and February of 1986. Some comparisons will be drawn among these. A thorough review of the history and hardware associated with the acceleration of polarized protons at the AGS can be found in the proceedings of the last meeting of this group at Protvino and will not be repeated here. 2 refs., 6 figs., 1 tab

  3. Experimental and theoretical investigation on photocatalytic activities of 1D Ag/Ag2WO4 nanostructures

    Science.gov (United States)

    Liu, Danqing; Huang, Weicheng; Li, Long; Liu, Lu; Sun, Xiaojun; Liu, Bo; Yang, Bin; Guo, Chongshen

    2017-09-01

    Ag2WO4 is a significant photocatalyst that responds to UV light irradiation only, which greatly hinders it for further practical application for solar light. To address this problem, herein, 1D plasmonic Ag/Ag2WO4 photocatalysts have been fabricated by a successive process including hydrothermal synthesis to obtain Ag2WO4 followed by an additional in situ chemical-reduction process for Ag decoration. Then, the structural features, optical properties, and electronic structures of Ag2WO4 and Ag/Ag2WO4 nanowires were systematically investigated via a combination of theoretical calculations and experimental evidence. The plasmon-enhanced Ag/Ag2WO4 nanowires exhibited higher visible-light-driven photocatalytic activity, which performed a desired photodestruction ratio of 91.2% on methylene blue within 60 min and good stability in five cycles. The Ag decoration greatly facilitates visible-light harvesting and thus promotes photogenerated radical oxidation to dye, which is evidenced by the higher hydroxyl radical level of Ag/Ag2WO4 detected in the ESR test during the photocatalytic process. The theoretical calculation based on density functional theory indicates that Ag nanoparticles formed on the surface of Ag2WO4 could narrow the band gap of Ag2WO4. In addition, the surface plasmon resonance absorption effect and fast charge transfer effect in the metal-semiconductor system contribute to the photocatalytic performance of Ag/Ag2WO4.

  4. Biocorrosion Evaluation on a Zr-Cu-Ag-Ti Metallic Glass

    Science.gov (United States)

    Kumar, Shresh; Anwar, Rebin; Ryu, Wookha; Park, E. S.; Vincent, S.

    2018-04-01

    Metallic glasses are in high demand for fabrication of variety of innovative products, in particular surgical and biomedical tools and devices owing to its excellent biocompatible properties. In the present investigation, a novel Zr39.5Cu50.5Ag4Ti6 metallic glass composition was synthesized using melt spinning technique. Potentiodynamic polarization studies were conducted to investigate bio-corrosion behaviour of Zr39.5Cu50.5Ag4Ti6 metallic glass. The test were conducted in various simulated artificial body conditions such as artificial saliva solution, phosphate-buffered saline solution, artificial blood plasma solution, and Hank’s balanced saline solution. The bio-corrosion results of metallic glass were compared with traditional biomaterials. The study aims to provide bio-compatible properties of Zr39.5Cu50.5Ag4Ti6 metallic glass.

  5. Ozone decomposition on Ag/SiO2 and Ag/clinoptilolite catalysts at ambient temperature

    International Nuclear Information System (INIS)

    Nikolov, Penko; Genov, Krassimir; Konova, Petya; Milenova, Katya; Batakliev, Todor; Georgiev, Vladimir; Kumar, Narendra; Sarker, Dipak K.; Pishev, Dimitar; Rakovsky, Slavcho

    2010-01-01

    Silver modified zeolite (Bulgarian natural clinoptilolite) and Ag/silica catalysts were synthesized by ion exchange and incipient wet impregnation method respectively and characterized by different techniques. DC arc-AES was used for Ag detection. XRD spectra show that Ag is loaded over the surface of the SiO 2 sample and that after the ion-exchange process the HEU type structure of clinoptilolite is retained. UV-VIS (specific reflection at 310 nm) and IR (band at 695 cm -1 ) spectroscopy analysis proved that silver is loaded as a T-atom into zeolite channels as Ag + , instead of Na + , Ca 2+ , or K + ions, existing in the natural clinoptilolite form. The samples Ag/SiO 2 and Ag-clinoptilolite were tested as catalysts for decomposition of gas phase ozone. Very high catalytic activity (up to 99%) was observed and at the same time the catalysts remained active over time at room temperature.

  6. Ag induced electromagnetic interference shielding of Ag-graphite/PVDF flexible nanocomposites thinfilms

    Science.gov (United States)

    Kumaran, R.; Alagar, M.; Dinesh Kumar, S.; Subramanian, V.; Dinakaran, K.

    2015-09-01

    We report Ag nanoparticle induced Electromagnetic Interference (EMI) shielding in a flexible composite films of Ag nanoparticles incorporated graphite/poly-vinylidene difluoride (PVDF). PVDF nanocomposite thin-films were synthesized by intercalating Ag in Graphite (GIC) followed by dispersing GIC in PVDF. The X-ray diffraction analysis and the high-resolution transmission electron microscope clearly dictate the microstructure of silver nanoparticles in graphite intercalated composite of PVDF matrix. The conductivity values of nanocomposites are increased upto 2.5 times when compared to neat PVDF having a value of 2.70 S/cm at 1 MHz. The presence of Ag broadly enhanced the dielectric constant and lowers the dielectric loss of PVDF matrix proportional to Ag content. The EMI shielding effectiveness of the composites is 29.1 dB at 12.4 GHz for the sample having 5 wt. % Ag and 10 wt. % graphite in PVDF.

  7. Ag-rich precipitates formation in the Cu–11%Al–10%Mn–3%Ag alloy

    Energy Technology Data Exchange (ETDEWEB)

    Silva, R.A.G., E-mail: galdino.ricardo@gmail.com [Departamento de Ciências Exatas e da Terra, UNIFESP, 09972-270 Diadema, SP (Brazil); Paganotti, A.; Jabase, L. [Departamento de Ciências Exatas e da Terra, UNIFESP, 09972-270 Diadema, SP (Brazil); Adorno, A.T.; Carvalho, T.M.; Santos, C.M.A. [Departamento de Físico-Química, Instituto de Química, UNESP, 14801-970 Araraquara, SP (Brazil)

    2014-12-05

    Highlights: • Cu-rich nanoprecipitates are formed in the presence of Ag. • Bainite precipitation is shifted to higher temperatures in the Cu–11%Al–10%Mn–3%Ag alloy. • The eutectoid α phase and bainite α{sub 1} phase compete by the Cu atoms during precipitation process. - Abstract: The formation of Ag-rich precipitates in the Cu–11%Al–10%Mn–3%Ag alloy initially quenched from 1123 K was analyzed. The results showed that nanoprecipitates of a Cu-rich phase are produced at about 523 K. In higher temperatures these nanoparticles grow and the relative fraction of Ag dissolved in it is increased, thus forming the Ag-rich phase.

  8. AgSat Imagery Collection Footprints

    Data.gov (United States)

    Farm Service Agency, Department of Agriculture — The AgSat Imagery Collection Footprints map shows the imagery footprints which have been collected under the USDA satellite blanket purchase agreement. Click on a...

  9. Barrier Cavities in the Brookhaven AGS

    International Nuclear Information System (INIS)

    Blaskiewicz, M.; Brennan, J. M.; Roser, T.; Smith, K.; Spitz, R.; Zaltsman, A.; Fujieda, M.; Iwashita, Y.; Noda, A.; Yoshii, M.; Mori, Y.; Ohmori, C.; Sato, Y.

    1999-01-01

    In collaboration with KEK two barrier cavities, each generating 40 kV per turn have been installed in the Brookhaven AGS. Machine studies are described and their implications for high intensity operations are discussed

  10. AgSat Areas of Interest

    Data.gov (United States)

    Farm Service Agency, Department of Agriculture — The AgSat Areas of Interest map contains area polygons where satellite imagery will be collected for the Farm Service Agency (FSA) to provide imagery coverage for...

  11. Lesson 3: Attorney General (AG) Certification

    Science.gov (United States)

    The AG Certification is a letter confirming legal authority to implement the electronic reporting covered by the application and enforce the affected programs using the electronic documents received under those programs.

  12. Temperature stability of AgCu nanoparticles

    Energy Technology Data Exchange (ETDEWEB)

    Sopoušek, Jiří, E-mail: sopousek@mail.muni.cz; Zobač, Ondřej; Vykoukal, Vít [Masaryk University, Department of Chemistry, Faculty of Science (Czech Republic); Buršík, Jiří; Roupcová, Pavla [Institute of Physics of Materials ASCR (Czech Republic); Brož, Pavel; Pinkas, Jiří [Masaryk University, Department of Chemistry, Faculty of Science (Czech Republic); Vřešťál, Jan [Masaryk University, Central European Institute of Technology, CEITEC (Czech Republic)

    2015-12-15

    The colloidal solutions of the Ag–Cu nanoparticles (NPs, 10–32 nm) were prepared by solvothermal reactions. The samples of dried AgCu NPs and the resulting microstructures after heat treatment in air were investigated by various methods including electron microscopy (TEM, SEM) and high-temperature X-ray powder diffraction (HTXRD). The AgCu randomly mixed, Cu-rich, and Ag-rich face centred cubic crystal lattices were detected during the experiments. The temperature induced sintering was observed experimentally by HTXRD at 250 °C. The phase transformations at high temperatures were monitored by differential scanning calorimetry. The formation of the Ag-rich grains during heating in air and evolution of copper oxide microstructure were detected.Graphical abstract.

  13. Physical properties of glasses in the Ag2GeS3-AgBr system

    Science.gov (United States)

    Moroz, M. V.; Demchenko, P. Yu.; Prokhorenko, S. V.; Moroz, V. M.

    2013-08-01

    Glasses have been prepared by quenching melts in the Ag2GeS3-AgBr system in a range of 0-53 mol % AgBr. The concentration dependences of density, microhardness, glass transition temperatures, and crystallization of alloys have been established. The conductivity of glasses has been investigated by the dc probe method in a range of 240-420 K. The models of the drift motion of silver and halogen ions have been proposed.

  14. BNL AGS - a context for kaon factories

    International Nuclear Information System (INIS)

    Littenberg, L.S.

    1983-05-01

    Figure 1 shows the Brookhaven site with the AGS-CBA complex highlighted. In this photograph the AGS is dwarfed by CBA and indeed during the past few years future plans for particle physics at BNL have been dominated by this enormous project. However, very recently interest in future physics use of the AGS has undergone a strong revival. Indeed, since the beginning of this year, two projects for augmenting the AGS have been proposed. Such projects could keep the AGS viable as a research machine for many years to come. In general such schemes will also improve the performance and increase the versatility of the CBA, and so are doubly valuable. It should be kept in mind that in spite of the fact the AGS has been perhaps the most fruitful machine in the history of high energy physics, its full capacities have never been exploited. Even without improvements at least one generation of rare K decay experiments beyond those currently launched seems feasible. Beyond that a major effort at any of the experiments discussed above could take it to the point where it would be limited by intrinsic physics background. To pursue a full program of physics at this level one would want to increase the intensity of the AGS as described. A ten-fold increase in K flux would remove such experiments from the category of all-out technological assaults and render them manageable by reasonably small groups of physicists. In addition, certain other, cleaner experiments, e.g., K/sub L/ 0 → e + e - or e + e - π 0 , could be pushed to limits unobtainable at the present AGS. The increased flux would also be welcomed by the neutrino and hypernuclear physics programs. Even experiments which do not at present require higher fluxes would benefit through the availability of purer beams and cleaner conditions

  15. Sonochemical synthesis of Ag/AgCl nanocubes and their efficient visible-light-driven photocatalytic performance.

    Science.gov (United States)

    Chen, Deliang; Yoo, Seung Hwa; Huang, Qingsong; Ali, Ghafar; Cho, Sung Oh

    2012-04-23

    A novel one-step sonochemical approach to synthesize a plasmonic photocatalyst of AgCl nanocubes (ca. 115 nm in edge length) with a small amount of Ag metal species is presented. The nanoscale Ag/AgCl hybrid photocatalysts with cubic morphology are readily formed under ambient ultrasonic conditions and neither external heat treatment nor reducing agents are required. The size of the Ag/AgCl photocatalysts could be controlled by changing the concentrations of Ag(+) ions and polyvinylpyrrolidone molecules in precursor solutions. The compositions, microstructures, influencing factors, and possible growth mechanism of the Ag/AgCl hybrid nanocubes were systematically investigated. The Ag/AgCl photocatalysts show excellent photocatalytic performance for degradation of various dye molecules under visible light. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  16. Gender differences in blood pressure regulation following artificial gravity exposure

    Science.gov (United States)

    Evans, Joyce; Goswami, Nandu; Kostas, Vladimir; Zhang, Qingguang; Ferguson, Connor; Moore, Fritz; Stenger, Michael, , Dr; Serrador, Jorge; W, Siqi

    Introduction. Before countermeasures to space flight cardiovascular deconditioning are established, gender differences in cardiovascular responses to orthostatic stress, in general, and to orthostatic stress following exposure to artificial gravity (AG), in particular, need to be determined. Our recent determination that a short exposure to AG improved the orthostatic tolerance limit (OTL) of cardiovascularly deconditioned subjects drives the current effort to determine mechanisms of that improvement in men and in women. Methods. We determined the OTL of 9 men and 8 women following a 90 min exposure to AG compared to that following 90 min of head down bed rest (HDBR). On both days (21 days apart), subjects were made hypovolemic (low salt diet plus 20 mg intravenous furosemide) and orthostatic tolerance was determined from a combination of head up tilt and increasing lower body negative pressure until presyncope. Mean values and correlations with OTL were determined for heart rate, blood pressure, stroke volume, cardiac output, total peripheral resistance (Finometer), middle cerebral artery flow velocity (DWL), partial pressure of carbon dioxide (Novametrics) and body segmental impedance (UFI THRIM) at supine baseline, during orthostatic stress to presyncope and at supine recovery. Results. Orthostatic tolerance of these hypovolemic subjects was significantly greater following AG than following HDBR. Exposure to AG increased cardiac output in both men and women and increased stroke volume in women. In addition, AG decreased systolic blood pressure in men, but not women, and increased cerebral flow in women, but not men. In both men and women, AG exposure decreased peripheral resistance and decreased cerebrovascular resistance in women. Men’s heart rate rose more at the end of OTL on their AG, compared to their HDBR, day but women’s fell. Presyncopal stroke volume reached the same level on each day of study for both men and women. Conclusions. In the present

  17. Transformation of Ag nanocubes into Ag-Au hollow nanostructures with enriched Ag contents to improve SERS activity and chemical stability.

    Science.gov (United States)

    Yang, Yin; Zhang, Qiang; Fu, Zheng-Wen; Qin, Dong

    2014-03-12

    We report a strategy to complement the galvanic replacement reaction between Ag nanocubes and HAuCl4 with co-reduction by ascorbic acid (AA) for the formation of Ag-Au hollow nanostructures with greatly enhanced SERS activity. Specifically, in the early stage of synthesis, the Ag nanocubes are sharpened at corners and edges because of the selective deposition of Au and Ag atoms at these sites. In the following steps, the pure Ag in the nanocubes is constantly converted into Ag(+) ions to generate voids owing to the galvanic reaction with HAuCl4, but these released Ag(+) ions are immediately reduced back to Ag atoms and are co-deposited with Au atoms onto the nanocube templates. We observe distinctive SERS properties for the Ag-Au hollow nanostructures at visible and near-infrared excitation wavelengths. When plasmon damping is eliminated by using an excitation wavelength of 785 nm, the SERS activity of the Ag-Au hollow nanostructures is 15- and 33-fold stronger than those of the original Ag nanocubes and the Ag-Au nanocages prepared by galvanic replacement without co-reduction, respectively. Additionally, Ag-Au hollow nanostructures embrace considerably improved stability in an oxidizing environment such as aqueous H2O2 solution. Collectively, our work suggests that the Ag-Au hollow nanostructures will find applications in SERS detection and imaging.

  18. Surface antigen-negative hepatitis B virus infection in Dutch blood donors

    NARCIS (Netherlands)

    Lieshout-Krikke, R. W.; Molenaar-de Backer, M. W. A.; van Swieten, P.; Zaaijer, H. L.

    2014-01-01

    Hepatitis B virus (HBV) surface antigen (HBsAg) is a reliable marker for HBV infection, but HBsAg-negative forms of HBV infection occur. The introduction of HBV DNA screening of Dutch blood donors, which were not preselected for absence of HBV core antibodies, enabled the characterization of

  19. Synthesis and characterization of Ag/AgBrO{sub 3} photocatalyst with high photocatalytic activity

    Energy Technology Data Exchange (ETDEWEB)

    Song, Limin, E-mail: songlmnk@sohu.com [College of Environment and Chemical Engineering & State Key Laboratory of Hollow-Fiber Membrane Materials and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387 (China); Li, Tongtong [College of Environment and Chemical Engineering & State Key Laboratory of Hollow-Fiber Membrane Materials and Membrane Processes, Tianjin Polytechnic University, Tianjin, 300387 (China); Zhang, Shujuan [College of Science, Tianjin University of Science & Technology, Tianjin, 300457 (China)

    2016-10-01

    A new Ag/AgBrO{sub 3} photocatalyst was prepared by mixing aqueous solutions of AgNO{sub 3} and NaBrO{sub 3}. The catalyst’s structure and performance were investigated with X-ray powder diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy. The UV–vis absorption spectrum of Ag/AgBrO{sub 3} exhibits a band gap of 3.97 eV. The results show that the Ag/AgBrO{sub 3} semiconductor can be excited by ultraviolet–visible light. The photodegradation of Rhodamine B displayed much higher photocatalytic activity than that of N-doped TiO{sub 2} under the same experimental conditions. Moreover, ·OH and ·O{sub 2}{sup −} generated in the photocatalysis played a key role of the photodegradation of Rhodamine B. - Highlights: • Ag/AgBrO{sub 3} with higher photodegradation ability was synthesized. • ·OH and ·O{sub 2}{sup −} radicals were the main active species in the oxidation of RhB. • The possible reaction mechanism was discussed in details.

  20. Transfusion transmissible infections among healthy blood donors at blood bank from children's hospital and institute of child health lahore

    International Nuclear Information System (INIS)

    Zameer, M.; Shahzad, F.; Khan, F.S.; Farooq, M.; Ali, H.; Saeed, U.

    2017-01-01

    Objective: To determine the frequency of HIV, HBV, HCV, syphilis and malaria in blood donors at Children Hospital and Institute of Child Health (ICH), Lahore and compare with other local and international published data. Study Design: Descriptive study. Place and Duration of Study: This was conducted at the blood bank of Children's Hospital and ICH, Lahore from October 2015 to February 2016. Patient and Methods: All adult male blood donors who had donated blood during above mentioned period, between 18 to 55 years of age were included in this study. Each and every donor was subjected to a predetermined, prepared questionnaire to find out their eligibility for donation. All blood donors' serum samples were screened for HBsAg, Anti-HCV, syphilis, HIV and malaria by immuno chromatography technique according to manufacturer instruction. Results: Statistical analysis showed that out of 10,048 blood donors, 7.94 percent (n=798) were infected with any one of the above mentioned diseases and 92.05 percent (n=9,250) had no infection. The overall frequency of HBsAg, HCV, HIV, syphilis and malaria were found to be 1.59 percent, 3.75 percent, 0.11 percent, 2.08 percent and 0.39 percent respectively. The co-infections of HCV + Syphilis, HBsAg + HCV, HBsAg + Syphilis, HCV + malarial parasite (M.P) and HBsAg + HIV + syphilis was 0.12 percent, 0.11 percent, 0.01 percent and 0.0099 percent respectively. Conclusion: There is a decreasing trend of HBsAg, HCV infections but increasing trend of HIV and syphilis infections in blood donors that is an alarming situation. (author)

  1. Frequency of hepatitis B surface antigen and anti-hepatitis c antibodies in apparently healthy blood donors in northern areas

    International Nuclear Information System (INIS)

    Alam, M.; Naeem, M.A.

    2007-01-01

    To determine the frequency of HBsAg and anti HCV among the potential blood donors belonging to Northern areas.A total of 8949 apparently healthy blood donors, belonging to Northern areas were screened for HBsAg and anti-HCV by rapid method.Overall sero-positivity of HBsAg was 3.66% and anti-HCV 1.35%. The result indicates that frequency of HBsAg is more than anti-HCV in Northern areas. (author)

  2. Association of ABO and Rh Blood Groups to Blood-Borne Infections among Blood Donors in Tehran-Iran.

    Science.gov (United States)

    Mohammadali, Fatemeh; Pourfathollah, Aliakbar

    2014-07-01

    The aim of this study was to investigate the prevalence of hepatitis B, hepatitis C, HIV and syphilis infections in blood donors referred to Tehran Blood Transfusion Center (TBTC), and determine any association between blood groups and blood- borne infections between the years of 2005 and 2011. This was a retrospective study conducted at TBTC. All of the donor serum samples were screened for HBV, HCV, HIV and syphilis by using third generation ELISA kits and RPR test. Initial reactive samples were tested in duplicate. Confirmatory tests were performed on all repeatedly reactive donations. Blood group was determined by forward and reverse blood grouping. The results were subjected to chi square analysis for determination of statistical difference between the values among different categories according to SPSS program. Overall, 2031451 donor serum samples were collected in 2005-2011. Totally, 10451 were positive test for HBV, HCV, HIV and syphilis. The overall seroprevalence of HBV, HCV, HIV, and syphilis was 0.39%, 0.11%, 0.005%, and 0.010%, respectively. Hepatitis B and HIV infections were significantly associated with blood group of donors (P blood group "A" and percentage of HBs Ag was lower in donors who had blood group O. There was no significant association between Hepatitis C and syphilis infections with ABO and Rh blood groups (P>0.05). Compared with neighboring countries and the international standards, prevalence of blood-borne infections is relatively low.

  3. Blood irradiation

    International Nuclear Information System (INIS)

    Chandy, Mammen

    1998-01-01

    Viable lymphocytes are present in blood and cellular blood components used for transfusion. If the patient who receives a blood transfusion is immunocompetent these lymphocytes are destroyed immediately. However if the patient is immunodefficient or immunosuppressed the transfused lymphocytes survive, recognize the recipient as foreign and react producing a devastating and most often fatal syndrome of transfusion graft versus host disease [T-GVHD]. Even immunocompetent individuals can develop T-GVHD if the donor is a first degree relative since like the Trojan horse the transfused lymphocytes escape detection by the recipient's immune system, multiply and attack recipient tissues. T-GVHD can be prevented by irradiating the blood and different centers use doses ranging from 1.5 to 4.5 Gy. All transfusions where the donor is a first degree relative and transfusions to neonates, immunosuppressed patients and bone marrow transplant recipients need to be irradiated. Commercial irradiators specifically designed for irradiation of blood and cellular blood components are available: however they are expensive. India needs to have blood irradiation facilities available in all large tertiary institutions where immunosuppressed patients are treated. The Atomic Energy Commission of India needs to develop a blood irradiator which meets international standards for use in tertiary medical institutions in the country. (author)

  4. BLOOD DONATION

    CERN Document Server

    SC Unit

    2008-01-01

    A blood donation, organized by EFS (Etablissement Français du Sang) of Annemasse will take place On Wednesday 12 November 2008, from 8:30 to 16:00, at CERN Restaurant 2 If possible, please, bring your blood group Card.

  5. Blood donation

    CERN Multimedia

    GS Department

    2009-01-01

    A blood donation is organised by the Cantonal Hospital of Geneva On Thursday 19 March 2009 from 9 a.m. to 5 p.m. CERN RESTAURANT 2 Number of donations during the last blood donations :135 donors in July 2008 122 donors in November 2008 Let’s do better in 2009 !!! Give 30 minutes of your time to save lives...

  6. Seroprevalence of HDV infection in HBsAg positive population in Ismailia, Egypt.

    Science.gov (United States)

    Gomaa, Nahed I M; Metwally, Lobna A; Nemr, Nader; Younis, Soha

    2013-01-01

    Hepatitis D virus (HDV) is a defective RNA virus that needs hepatitis B surface antigen (HBsAg) from HBV for transmission. HDV can lead to fulminant hepatitis and the progression of chronic liver damage in patients with chronic hepatitis B. The aim of this study was to determine the seroprevalence of HDV among HBsAg positive individuals in Ismailia, Egypt. Serum samples were collected from 170 HBsAg positive healthy individuals from Suez Canal University blood bank over a one year period. All of them were seeking blood donation and found to be HBsAg positive during viral hepatitis screening workups which is routinely done prior to donation. Serum samples were screened for IgG antibodies to hepatitis delta virus (HDV) using enzyme-linked immunosorbent assay (ELISA) method. Anti-HDV antibodies were detected in 8 (4.7%) individuals aged from 29-43 years. Liver function tests showed that serum ALT and AST levels were elevated in the HBsAglanti-HDV positive cases. It is concluded that the rate of HDV infection in Ismailia is high and further investigation is needed to validate the findings and raise awareness about the risk of dual HBV and HDV infection.

  7. Removal of Ag+ from water environment using a novel magnetic thiourea-chitosan imprinted Ag+

    International Nuclear Information System (INIS)

    Fan, Lulu; Luo, Chuannan; Lv, Zhen; Lu, Fuguang; Qiu, Huamin

    2011-01-01

    Highlights: → Coating modified chitosan on magnetic fluids, which were using Ag(I) as imprinted ions, is a new method to expand function of the chitosan. → The method can improve the surface area for adsorption of Ag + and reduce the required dosage for the adsorption of Ag(I). → The imprinted magnetic chitosan can be used effectively and selectively to remove Ag(I) ions from aqueous solutions. → It shows the facile, fast separation process of magnetic chitosan during the experiments. The absorbent has a good application prospect. - Abstract: A novel, thiourea-chitosan coating on the surface of magnetite (Fe 3 O 4 ) (Ag-TCM) was successfully synthesized using Ag(I) as imprinted ions for adsorption and removal of Ag(I) ions from aqueous solutions. The thermal stability, chemical structure and magnetic property of the Ag-TCM were characterized by the scanning electron microscope (SEM), Fourier transform infrared spectrometer (FT-IR) and vibrating sample magnetometer (VSM), respectively. Batch adsorption experiments were performed to evaluate the adsorption conditions, selectivity and reusability. The results showed that the maximum adsorption capacity was 4.93 mmol/g, observed at pH 5 and temperature 30 o C. Equilibrium adsorption was achieved within 50 min. The kinetic data, obtained at the optimum pH 5, could be fitted with a pseudo-second order equation. Adsorption process could be well described by Langmuir adsorption isotherms and the maximum adsorption capacity calculated from Langmuir equation was 5.29 mmol/g. The selectivity coefficient of Ag(I) ions and other metal cations onto Ag-TCM indicated an overall preference for Ag(I) ions, which was much higher than non-imprinted thiourea-chitosan beads. Moreover, the sorbent was stable and easily recovered, the adsorption capacity was about 90% of the initial saturation adsorption capacity after being used five times.

  8. Antibacterial Ag/a-C nanocomposite coatings: The influence of nano-galvanic a-C and Ag couples on Ag ionization rates

    Energy Technology Data Exchange (ETDEWEB)

    Manninen, N.K., E-mail: nora.sousa@dem.uc.pt [SEG-CEMUC, Mechanical Engineering Department, University of Coimbra, 3030-788 Coimbra (Portugal); GRF-CFUM, Physics Department, University of Minho, Campus of Azurém, 4800-058 Guimarães (Portugal); Calderon, S. [SEG-CEMUC, Mechanical Engineering Department, University of Coimbra, 3030-788 Coimbra (Portugal); GRF-CFUM, Physics Department, University of Minho, Campus of Azurém, 4800-058 Guimarães (Portugal); Carvalho, I. [GRF-CFUM, Physics Department, University of Minho, Campus of Azurém, 4800-058 Guimarães (Portugal); CEB—Centre of Biological Engineering, LIBRO-Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, 4710-057 Braga (Portugal); Henriques, M. [CEB—Centre of Biological Engineering, LIBRO-Laboratório de Investigação em Biofilmes Rosário Oliveira, University of Minho, 4710-057 Braga (Portugal); Cavaleiro, A. [SEG-CEMUC, Mechanical Engineering Department, University of Coimbra, 3030-788 Coimbra (Portugal); Carvalho, S. [SEG-CEMUC, Mechanical Engineering Department, University of Coimbra, 3030-788 Coimbra (Portugal); GRF-CFUM, Physics Department, University of Minho, Campus of Azurém, 4800-058 Guimarães (Portugal)

    2016-07-30

    Highlights: • Amorphous carbon (a-C), Ag/a-C and Ag coatings were deposited by magnetron sputtering. • a-C/Ag coating shows antibacterial activity against S. epidermidis. • The formation of nano-galvanic couples in a-C/Ag enhances the Ag{sup +} ionization rate. • The Ag{sup +} ionization occurs along with Ag nanoparticles agglomeration in 0.9% NaCl. - Abstract: Biofilm formation has been pointed as a major concern in different industrial applications, namely on biomedical implants and surgical instruments, which has prompted the development of new strategies for production of efficient antimicrobial surfaces. In this work, nano-galvanic couples were created to enhance the antibacterial properties of silver, by embedding it into amorphous carbon (a-C) matrix. The developed Ag/a-C nanocomposite coatings, deposited by magnetron sputtering, revealed an outstanding antibacterial activity against Staphylococcus epidermidis, promoting a total reduction in biofilm formation with no bacteria counts in all dilution. The open circuit potential (OCP) tests in 0.9% NaCl confirmed that a-C shows a positive OCP value, in contrast to Ag coating, thus enhancing the ionization of biocidal Ag{sup +} due to the nano-galvanic couple activation. This result was confirmed by the inductively coupled plasma-optical emission spectroscopy (ICP-OES), which revealed a higher Ag ionization rate in the nanocomposite coating in comparison with the Ag coating. The surface of Ag/a-C and Ag coatings immersed in 0.9% NaCl were monitored by scanning electron microscopy (SEM) over a period of 24 h, being found that the Ag ionization determined by ICP-OES was accompanied by an Ag nanoparticles coalescence and agglomeration in Ag/a-C coating.

  9. Both released silver ions and particulate Ag contribute to the toxicity of AgNPs to earthworm Eisenia fetida

    NARCIS (Netherlands)

    Li, L.; , van, Gestel C.A.M.

    2015-01-01

    To disentangle the contribution of ionic and nanoparticulate Ag to the overall toxicity to the earthworm Eisenia fetida, a semi-permeable membrane strategy was used to separate Ag+ released from silver nanoparticles (AgNPs) in an aqueous exposure. Internal Ag fractionation, activities of antioxidant

  10. Core/shell AgNi/PtAgNi nanoparticles as methanol-tolerant oxygen reduction electrocatalysts

    International Nuclear Information System (INIS)

    Wu, Dengfeng; Cheng, Daojian

    2015-01-01

    A core/shell AgNi/PtAgNi nanoparticle (NP) was synthesized via a new seed-mediated growth method in organic solvent medium. The as-synthesized AgNi/PtAgNiNP exhibits an AgNi core coated with PtAgNi shell, which was confirmed by transmission electron microscopy (TEM), ultraviolet–visible absorption spectroscopy and X-ray Photoelectron Spectroscopy (XPS). The AgNi/PtAgNiNPs/C catalyst possesses higher oxygen reduction reaction (ORR) activity and better durability compared with the commercial Pt/C catalyst. It is found that the ORR polarization curve of the AgNi/PtAgNiNPs/C catalyst shows an onset potential of 0.91 V vs. RHE, which is superior to the commercial Pt/C (0.88 V vs. RHE). In addition, the AgNi/PtAgNiNPs/C catalyst shows much better durability than the commercial Pt/C catalyst. More interestingly, the AgNi/PtAgNiNPs/C catalyst displays much higher methanol tolerance than the commercial Pt/C catalyst in 0.1 M KOH solution in the presence of 0.5 M methanol. Our results show that core/shell AgNi/PtAgNiNPs possess selective activity for ORR even in the presence of methanol, showing potential application as methanol-tolerant cathode catalysts in direct methanol fuel cells.

  11. Search for chirality in 109Ag

    International Nuclear Information System (INIS)

    Timar, J.; Nyako, B.M.; Berek, G.; Gal, J.; Kalinka, G.; Krasznahorkay, A.; Molnar, J.; Zolnai, L.

    2007-01-01

    Complete text of publication follows. The existence of nuclear chirality is one of the most intriguing questions of contemporary high-spin nuclear structure studies. Rotational doublet-band candidates for chiral structures have been observed mostly in two regions of the nuclear chart: around 134 Pr, and around 104 Rh. In this second region chirality in the Rh isotopes are rather well studied, chiral doubling have also been observed in 100 Tc, however, results obtained for chirality in the studied Ag nuclei ( 105 Ag and 106 Ag) look rather contradictory. Thus, it is interesting to study these doublet bands in the nearby higher-mass Ag nuclei. In order to search for a chiral-candidate partner band to the yrast πg 9/2 v(h 11/2 ) 2 band in 109 Ag, high-spin states of this nucleus have been studied using the 96 Zr( 18 O,p4n) reaction. The experiment was performed at iThemba LABS using 8 Clover detectors of the AFRODITE array and the DIAMANT charged-particle array to detect the γ-rays and the charged particles, respectively. Altogether ∼140 million γγ-coincidence events were collected. Approximately 10 million events of them correspond to the reaction channel producing 109 Ag. No chiral candidate partner band has been found to the πg 9/2 v(h 11/2 ) 2 band with this statistics, however, the level scheme could be extended by several new levels and γ-transitions. A preliminary level scheme of 109 Ag obtained from the ongoing data analysis is shown in Fig. 1

  12. Seropositivity for hepatitis B and C in voluntary blood donors

    International Nuclear Information System (INIS)

    Shah, S.M.A.; Ali, A.

    2010-01-01

    After the introduction of blood banks and better storage techniques blood is more widely used in patients for various indications. In Pakistan more than 1.5 million pints of blood are collected each year. Hepatitis B and C virus infections are known to occur in the general population and due to their mode of transmission through blood and blood products, it has made safe blood transfusion difficult and screening of blood absolutely necessary. Objectives of this study were to estimate frequency of Hepatitis B and C in blood donors of local area and recommend measures for safe blood transfusion. Methods: This retrospective cross-sectional study was conduced at the Blood Bank, Department of Pathology, Khyber Teaching Hospital, Peshawar from January 01, 2007 to December 31, 2008. It was carried out on 32,042 voluntary, non-remunerated healthy blood donors. They were screened for Hepatitis B surface antigen (HBsAg) and anti-hepatitis C antibodies (anti-HCV antibodies) by ELISA. The patients' age ranged from 18-52 years. They were all males. Results: Out of 32,042 donors, 632 (1.97%) patients were positive for HBsAg, and 502 (1.57%).were positive for anti-HCV antibodies. Conclusion: Incidence of Hepatitis B and C is varying in different areas. It is recommended that properly screened blood only, using a reliable method like ELISA, be transfused to the patients. (author)

  13. The role of GluN2A and GluN2B NMDA receptor subunits in AgRP and POMC neurons on body weight and glucose homeostasis

    Directory of Open Access Journals (Sweden)

    Aykut Üner

    2015-10-01

    Conclusions: GluN2B-containing NMDA receptors in AgRP neurons play a critical role in central control of body weight homeostasis and blood glucose balance via mechanisms that likely involve regulation of AgRP neuronal survival and structure, and modulation of hypothalamic leptin action.

  14. Observation of a Ag protrusion on a Ag2S island using a scanning tunneling microscope

    Directory of Open Access Journals (Sweden)

    Takeo Ohno

    2015-01-01

    Full Text Available A silver sulfide (Ag2S island as an ionic conductor in resistive switching memories was formed and a protrusion of silver from the Ag2S formed by an electrochemical reaction was observed using a scanning tunneling microscope.

  15. Radiation hardness of LuAG:Ce and LuAG:Pr scintillator crystals

    CERN Document Server

    Derdzyan, M V; Belsky, A; Dujardin, C; Lecoq, P; Lucchini, M; Ovanesyan, K L; Pauwels, K; Pedrini, C; Petrosyan, A G

    2012-01-01

    Single crystals of LuAG:Ce, LuAG:Pr and un-doped LuAG were grown by the vertical Bridgman method and studied for radiation hardness under gamma-rays with doses in the range 10-10(5) Gy (Co-60). A wide absorption band peaking at around 600 nm springs up in all three types of crystals after the irradiations. The second band peaking at around 375 nm appears in both LuAG:Pr and un-doped LuAG. Compositional variations have been done to reveal the spectral behavior of induced color centers in more detail and to understand their origin. Similarities in behavior of Yb2+ centers in as-grown garnets are found, indicating that radiation induced color centers can be associated with residual trace amounts of Yb present in the raw materials. Un-doped LuAG and LuAG:Ce demonstrate moderate radiation hardness (the induced absorption coefficients being equal to 0.05-0.08 cm(-1) for accumulated doses of 10(3)-10(4) Gy), while LuAG:Pr is less radiation hard. The ways to improve the radiation hardness are discussed.

  16. Precipitation of Ag2Te in the thermoelectric material AgSbTe2

    International Nuclear Information System (INIS)

    Sugar, Joshua D.; Medlin, Douglas L.

    2009-01-01

    The microstructure of AgSbTe 2 , prepared by solidification, is investigated using electron microscopy. During solidification and thermal treatment, the material separates into a two-phase mixture of a rocksalt phase, which is Ag 22 Sb 28 Te 50 , and silver telluride, Ag 2 Te. Ag 2 Te formation results either from eutectic solidification (large lamellar structures), or by solid-state precipitation (fine-scale particles). The crystal structure of the AgSbTe 2 phase determined by electron diffraction is consistent with a rocksalt structure that has a disordered cation sublattice. A preferred crystallographic orientation relationship at the interface between the matrix and the low-temperature monoclinic Ag 2 Te phase is defined and discussed. This orientation relationship is observed for both second-phase morphologies. In both cases, the orientation relationship originates from a topotactic (cube-on-cube) alignment of the Te sublattices in the initially cubic Ag 2 Te and the matrix at elevated temperature. This Te sublattice alignment is retained as the Ag 2 Te undergoes a cubic-to-monoclinic transformation during cooling. This orientation relationship is observed for both second-phase morphologies.

  17. Molecular dynamics study on glass and molten state of AgI-AgPO3

    Science.gov (United States)

    Matsunaga, Shigeki

    2017-08-01

    Molecular dynamics (MD) simulation on molten and glass state of AgI-AgPO3 have been performed to investigate the structural features and transport properties. In MD, the screened Born-Mayer type potentials including the effect of polarizability of ions have been used. The structure, conductivity, shear viscosity, and Voronoi polyhedron are discussed in relation with the temperature change.

  18. The production of 103Pd and 109Cd from a proton irradiated tandem natAg/natAg targets

    International Nuclear Information System (INIS)

    Ineza, C.; Mphahlele, J.

    2014-01-01

    This paper describes a new method for the production of 103 Pd and 109 Cd using the 66 MeV proton beam of iThemba LABS on a tandem natural silver target (Ag/Ag). The radiochemical separation of the Pd radionuclides ( 103 Pd, 100 Pd) from the bulk nat Ag was done using a Chelex-100 chelating resin column. The recovery of 103 Pd from the irradiated nat Ag target was found to be >98 % without any Ag or Rh impurities detected. The radiochemical separation of 109 Cd from the bulk nat Ag target was done by the precipitation of Ag ions by Cu followed by the separation of 109 Cd, traces of Ag, Cu 2+ and Rh using a AG1-X10 anion exchange resin column. The recovery yield of 109 Cd was >99 % without any Ag or Rh impurities detected. (author)

  19. Facile synthesis of silver/silver thiocyanate (Ag@AgSCN plasmonic nanostructures with enhanced photocatalytic performance

    Directory of Open Access Journals (Sweden)

    Xinfu Zhao

    2017-12-01

    Full Text Available A nanostructured plasmonic photocatalyst, silver/silver thiocyanate (Ag@AgSCN, has been prepared by a simple precipitation method followed by UV-light-induced reduction. The ratio of Ag to silver thiocyanate (AgSCN can be controlled by simply adjusting the photo-induced reduction time. The formation mechanism of the product was investigated based on the time-dependent experiments. Further experiments indicated that the prepared Ag@AgSCN nanostructures with an atomic ratio of Ag/AgSCN = 0.0463 exhibited high photocatalytic activity and long-term stability for the degradation of oxytetracycline (84% under visible-light irradiation. In addition to the microstructure and high specific surface area, the enhanced photocatalytic activity was mainly caused by the surface plasmon resonance of Ag nanoparticles, and the high stability of AgSCN resulted in the long-term stability of the photocatalyst product.

  20. Blood donor recruitment strategies and their impact on blood safety in Egypt.

    Science.gov (United States)

    Hussein, Eiman

    2014-02-01

    Because of the high incidence of HCV, blood safety presents a serious challenge in Egypt. Given the constrained economy which limits the implementation of nucleic acid amplification technology, proper recruitment of blood donors becomes of paramount importance. To evaluate the effectiveness of blood donor recruitment strategies, the seroprevalence of positive infectious markers among blood donors was studied. Donors' records covering the period from 2006-2012 were reviewed. Blood donations were screened for HCV antibodies, HBs antigen (HBsAg), HIV-1 and 2 and syphilis antibodies. Of 308,762 donors, 63.4% were voluntary donors (VD). VD of 2011-2012 were significantly younger than family replacement donors (RD) .The overall prevalences of HCV antibodies, HBsAg, HIV and syphilis antibodies were 4.3%, 1.22%, 0.07%, and 0.13%, respectively. All tested markers (except HIV) were significantly higher among RD, when compared to VD (P<0.0001). A consistent steady trend for decrease in HCV seropositivity was observed in RD and VD from 8.9% and 4.2% to 3.8% and 1.5%, respectively. A trend for decrease in HBsAg was demonstrated in VD from 1.2% to 0.53%. The decreasing trends in HCV antibody and HBs antigen is promising and may reflect the improved donor selection criteria. Copyright © 2013 Elsevier Ltd. All rights reserved.

  1. First-principles study of surface plasmons on Ag(111) and H/Ag(111)

    DEFF Research Database (Denmark)

    Yan, Jun; Jacobsen, Karsten Wedel; Thygesen, Kristian Sommer

    2011-01-01

    Linear-response time-dependent density functional theory is used to investigate the relation between molecular bonding and surface plasmons for the model system H/Ag(111). We employ an orbital-dependent exchange-correlation functional to obtain a correct description of the Ag 3d band, which...... is crucial to avoid overscreening the plasmon by the s-d interband transitions. For the clean surface, this approach reproduces the experimental plasmon energies and dispersion to within 0.15 eV. Adsorption of hydrogen shifts and damps the Ag(111) surface plasmon and induces a new peak in the loss function...... at 0.6 eV below the Ag(111) plasmon peak. This feature originates from interband transitions between states located on the hydrogen atoms and states on the Ag surface atoms....

  2. Possibility of polarized beams at the AGS

    International Nuclear Information System (INIS)

    Courant, E.D.; Ruth, R.D.

    1978-01-01

    A two week study was held at Brookhaven this summer to investigate polarized proton acceleration at the AGS in more detail and to produce a preliminary design and cost estimate. The Brookhaven study discovered no new problems which cannot be solved. A polarized proton ion source of the H - type is preferred, which could yield pulses of 75% polarized H - ions with an intensity of 10 to 100 μamp and a length of 1 to 3 msec. Upon injection this would result in an AGS intensity of 3 x 10 10 to 10 12 polarized protons per pulse which, together with the 2 sec repetition rate and the high extraction efficiency of the AGS, would yield an extracted beam intensity 5 to 150 times larger than that of the ZGS. Twelve new pulsed tune-shift quadrupoles will be necessary to jump the intrinsic resonances while the existing 96 correction dipoles can be used to tune out the imperfection harmonics. Most of the polarization monitors necessary are simply extensions of existing polarimeters; however, a fast internal polarimeter with an associated thin internal target would be useful for rapid tuning during the acceleration cycle. With these modifications it should be possible to accelerate polarized protons through the 8 intrinsic and 47 imperfection resonances in the AGS up to 23 GeV/c by late 1980. Although no decision has yet been reached with regard to the implementation of such a program, it is presently being considered together with other options for future AGS operation

  3. High intensity hadron facility, AGS II

    International Nuclear Information System (INIS)

    Lee, Y.Y.; Lowenstein, D.I.

    1989-01-01

    There is a large and growing community of particle and nuclear physicists around the world who are actively lobbying for the construction of an accelerator that could provide 1-2 orders of magnitude increase in proton intensity above that of the present AGS. There have been a series of proposals from Canada, Europe, Japan, and the USA. They can all be characterized as machines varying in energy from 12-60 GeV and intensities of 30-100 μA. The community of physicists using the AGS are in a unique position however. The AGS is the only machine available that can provide the beams to execute the physics program that this large international community is interested in. The BNL approach to the communities interests involves a stepwise intensity upgrade program. At present the AGS slow extracted beam current is 1 μA. With the completion of the Booster in 1990 and the associated AGS modifications, the current will rise to 4-5 μA. With the subsequent addition of the Stretcher which is under design, the current will rise to 8-10 μA and approximately 100% duty factor. The possibility of a further enhancement to a current level of 40-50 μA CW is now being examined. 2 figures, 6 tables

  4. sup 111 Ag in the Chernobyl fallout

    Energy Technology Data Exchange (ETDEWEB)

    Winkler, R.; Rosner, G.; Hoetzl, H. (Gesellschaft fuer Strahlen- und Umweltforschung mbH Muenchen, Neuherberg (Germany, F.R.). Inst. fuer Strahlenschutz)

    1989-01-01

    In the course of a re-evalution of the gamma-ray spectra of air filter samples collected immediately after Chernobyl accident at Munich-Neuherberg {sup 111}Ag has been found to contribute significantly to the total activity within the first days of the Chernobyl fallout. The maximum air concentration was measured on 1 May 1986 to be 5.4 Bq/m{sup 3} compared with 9.7 Bq {sup 137}Cs per m{sup 3}. Referred to this date the total activity deposition to ground was 12{plus minus}3 kBq {sup 111}Ag per m{sup 2}. Referred to 26 April 1986 the {sup 111}Ag to {sup 110m}Ag ratio was found to be 53{plus minus}3 and the {sup 111}Ag to {sup 137}Cs ratio was 1.0{plus minus}0.1. It is estimated that the cesium isotopes were depleted during release and atmospheric transport by a factor of about 2 compared with the silver isotopes. (orig.).

  5. HBcrAg Identifies Patients Failing to Achieve HBeAg Seroconversion Treated with Pegylated Interferon Alfa-2b

    Directory of Open Access Journals (Sweden)

    Hui Ma

    2016-01-01

    Conclusions: Effective antiviral treatment can decrease HBcrAg levels in the serum. The NPVs of HBcrAg for predicting HBeAg seroconversion at 24-week follow-up was 100%, but the PPVs were not satisfactory (all <31%. The serum HBcrAg levels of the patients with HBeAg seroconversion at the end of the 24-week follow-up steadily declined or even became undetectable during the LTFU.

  6. The effect of soil properties on the toxicity and bioaccumulation of Ag nanoparticles and Ag ions in Enchytraeus crypticus

    NARCIS (Netherlands)

    Topuz, Emel; van Gestel, Cornelis A.M.

    2017-01-01

    Standard natural Lufa soils (2.2, 2.3 and 5 M) with different organic carbon contents (0.67–1.61%) and pHCaCl2 (5.5–7.3) were spiked with ionic Ag (AgNO3) and polyvinyl pyrrolidone (AgNP-PVP) and citrate (AgNP-Cit) coated Ag nanoparticles (NPs). Enchytraeus crypticus were exposed for 21 days to

  7. Silver release from nanocomposite Ag/alginate hydrogels in the presence of chloride ions: experimental results and mathematical modeling

    Energy Technology Data Exchange (ETDEWEB)

    Kostic, Danijela, E-mail: dkostic@tmf.bg.ac.rs [Innovation Center of the Faculty of Technology and Metallurgy (Serbia); Vidovic, Srđan, E-mail: srdjanhi@gmail.com; Obradovic, Bojana, E-mail: bojana@tmf.bg.ac.rs [University of Belgrade, Faculty of Technology and Metallurgy (Serbia)

    2016-03-15

    A stepwise experimental and mathematical modeling approach was used to assess silver release from nanocomposite Ag/alginate microbeads in wet and dried forms into water and into normal saline solution chosen as a simplified model for certain biological fluids (e.g., blood plasma, wound exudates, sweat, etc). Three phenomena were connected and mathematically described: diffusion of silver nanoparticles (AgNPs) within the alginate hydrogel, AgNP oxidation/dissolution and reaction with chloride ions, and diffusion of the resultant silver-chloride species. Mathematical modeling results agreed well with the experimental data with the AgNP diffusion coefficient estimated as 1.3 × 10{sup −18} m{sup 2} s{sup −1}, while the first-order kinetic rate constant of AgNP oxidation/dissolution and diffusivity of silver-chloride species were shown to be inversely related. In specific, rapid rehydration and swelling of dry Ag/alginate microbeads induced fast AgNP oxidation/dissolution reaction with Cl{sup −} and AgCl precipitation within the microbeads with the lowest diffusivity of silver-chloride species compared to wet microbeads in normal saline. The proposed mathematical model provided an insight into the phenomena related to silver release from nanocomposite Ca-alginate hydrogels relevant for use of antimicrobial devices and established, at the same time, a basis for further in-depth studies of AgNP interactions in hydrogels in the presence of chloride ions.

  8. Osmolality - blood

    Science.gov (United States)

    ... water loss Poisoning from harmful substances such as ethanol , methanol , or ethylene glycol Problems producing urine In ... may be due to: Diabetes insipidus High blood sugar level ( hyperglycemia ) High level of nitrogen waste products ...

  9. Tainted blood

    DEFF Research Database (Denmark)

    Deleuran, Ida; Sheikh, Zainab Afshan; Hoeyer, Klaus

    2015-01-01

    The existing literature on donor screening in transfusion medicine tends to distinguish between social concerns about discrimination and medical concerns about safety. In this article, we argue that the bifurcation into social and medical concerns is problematic. We build our case on a qualitative...... study of the historical rise and current workings of safety practices in the Danish blood system. Here, we identify a strong focus on contamination in order to avoid 'tainted blood', at the expense of working with risks that could be avoided through enhanced blood monitoring practices. Of further...... significance to this focus are the social dynamics found at the heart of safety practices aimed at avoiding contamination. We argue that such dynamics need more attention, in order to achieve good health outcomes in transfusion medicine. Thus, we conclude that, to ensure continuously safe blood systems, we...

  10. Blood Clots

    Science.gov (United States)

    ... sitting for long periods. If you travel by airplane, walk the aisle periodically. For long car trips, ... Your-Risk-for-Excessive-Blood-Clotting_UCM_448771_Article.jsp. Accessed April 18, 2016. What causes excessive ...

  11. Blood Clots

    Science.gov (United States)

    ... Pregnancy Immobility (including prolonged inactivity, long trips by plane or car ) Smoking Oral contraceptives Certain cancers Trauma Certain surgeries Age (increased risk for people over age 60) A family history of blood clots Chronic inflammatory diseases Diabetes High ...

  12. Facile synthesis of AgCl/polydopamine/Ag nanoparticles with in-situ laser improving Raman scattering effect

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Yan; Zhang, Wenqi; Wang, Lin; Wang, Feng, E-mail: wangfeng@shnu.edu.cn; Yang, Haifeng

    2017-01-15

    Highlights: • AgCl/PDA/AgNPs (polydopamine (PDA) adlayer covered cubic AgCl core inlaid with Ag nanoparticles (AgNPs)) was fabricated for in-situ SERS detection. • Such SERS substrate shows in-situ laser improving Raman scattering effect due to the generation of more AgNPs. • Enhancement factor could reach 10{sup 7}. • Such SERS substrate shows good reproducibility and long term stability. - Abstract: We reported a simple and fast method to prepare a composite material of polydopamine (PDA) adlayer covered cubic AgCl core, which was inlaid with Ag nanoparticles (NPs), shortly named as AgCl/PDA/AgNPs. The resultant AgCl/PDA/AgNPs could be employed as surface-enhanced Raman scattering (SERS) substrate for in-situ detection and the SERS activity could be further greatly improved due to the production of more AgNPs upon laser irradiation. With 4-mercaptopyridine (4-Mpy) as the probe molecule, the enhancement factor could reach 10{sup 7}. Additionally, such SERS substrate shows good reproducibility with relative standard deviation of 7.32% and long term stability (after storage for 100 days under ambient condition, SERS intensity decay is less than 25%). In-situ elevating SERS activity of AgCl/PDA/AgNPs induced by laser may be beneficial to sensitive analysis in practical fields.

  13. Moving blood.

    Science.gov (United States)

    Pelis, K

    1997-01-01

    Our internationally acclaimed journalist Sanguinia has returned safely from her historic assignment. Travelling from Homeric Greece to British Romanticism, she was witness to blood drinking, letting, bathing, and transfusion. In this report, she explores connections between the symbolic and the sadistic; the mythic and the medical--all in an effort to appreciate the layered meanings our culture has given to the movement of blood between our bodies.

  14. Spectrophotometry of the shell around AG Carinae

    Science.gov (United States)

    Mitra, P. Mila; Dufour, Reginald J.

    1990-01-01

    Spatially-resolved long-slit spectrophotometry are presented for two regions of the shell nebula around the P-Cygni variable star AG Carinae. The spectra cover the 3700-6800 A wavelength range. Emission-line diagnostics are used to derive extinction, electron temperatures, and densities for various positions in the nebula. The chemical abundances and ionization structure are calculated and compared with other types of planetary nebulae and shells around other luminous stars. It is found that the N/O and N/S ratios of Ag Car are high compared to solar neighborhood ISM values. The O/H depletion found for the AG Car shell approaches that found in the condensations of the Eta Car system.

  15. Upgrading the AGS polarized beam facility

    International Nuclear Information System (INIS)

    Ratner, L.G.

    1991-01-01

    Although present techniques for crossing depolarizing resonances in circular accelerators work, they are very time-consuming to implement and were only able to provide about a 40% polarized beam at 22 GeV in the Alternating Gradient Synchrotron (AGS). We propose to install a partial ''Siberian Snake'' solenoid in the AGS to eliminate the need to correct imperfection resonances and to make other modifications in our intrinsic resonance correctors. This will allow us to reach an energy of 25 GeV with 70% polarization and will enable the AGS to be an efficient injector of polarized protons into the Relativistic Heavy Ion Collider (RHIC), as well as being able to carry on a fixed-target program with minimum set-up time. 3 refs., 5 figs., 1 tab

  16. A High Intensity Hadron Facility, AGS II

    International Nuclear Information System (INIS)

    Lee, Y.Y.; Lowenstein, D.I.

    1988-01-01

    We have present one of several possibilities for the evolution of the AGS complex into a high intensity hadron facility. One could consider other alternatives, such as using the AGS as the Collector and constructing a new 9-30 GeV machine. We believe the most responsible scenario must minimize the cost and downtime to the ongoing physics program. With a stepwise approach, starting with the Booster, the physics program can evolve without a single major commitment in funds. At each step an evaluation of the funds versus physics merit can be made. As a final aside, each upgrade at the AGS and Booster is presently being implemented to support an interleaved operation of both protons and ions. 1 fig., 6 tabs

  17. Hepatitis B Virus Blood Screening: Need for Reappraisal of Blood Safety Measures?

    Directory of Open Access Journals (Sweden)

    Daniel Candotti

    2018-02-01

    Full Text Available Over the past decades, the risk of HBV transfusion–transmission has been steadily reduced through the recruitment of volunteer donors, the selection of donors based on risk-behavior evaluation, the development of increasingly more sensitive hepatitis B antigen (HBsAg assays, the use of hepatitis B core antibody (anti-HBc screening in some low-endemic countries, and the recent implementation of HBV nucleic acid testing (NAT. Despite this accumulation of blood safety measures, the desirable zero risk goal has yet to be achieved. The residual risk of HBV transfusion–transmission appears associated with the preseroconversion window period and occult HBV infection characterized by the absence of detectable HBsAg and extremely low levels of HBV DNA. Infected donations tested false-negative with serology and/or NAT still persist and derived blood components were shown to transmit the virus, although rarely. Questions regarding the apparent redundancy of some safety measures prompted debates on how to reduce the cost of HBV blood screening. In particular, accumulating data strongly suggests that HBsAg testing may add little, if any HBV risk reduction value when HBV NAT and anti-HBc screening also apply. Absence or minimal acceptable infectious risk needs to be assessed before considering discontinuing HBsAg. Nevertheless, HBsAg remains essential in high-endemic settings where anti-HBc testing cannot be implemented without compromising blood availability. HBV screening strategy should be decided according to local epidemiology, estimate of the infectious risk, and resources.

  18. Ag on Si(111) from basic science to application

    Energy Technology Data Exchange (ETDEWEB)

    Belianinov, Aleksey [Iowa State Univ., Ames, IA (United States)

    2012-01-01

    In our work we revisit Ag and Au adsorbates on Si(111)-7x7, as well as experiment with a ternary system of Pentacene, Ag and Si(111). Of particular interest to us is the Si(111)-(√3x√3)R30°}–Ag (Ag-Si-√3 hereafter). In this thesis I systematically explore effects of Ag deposition on the Ag-Si-√3 at different temperatures, film thicknesses and deposition fluxes. The generated insight of the Ag system on the Si(111) is then applied to generate novel methods of nanostructuring and nanowire growth. I then extend our expertise to the Au system on the Ag-Si(111) to gain insight into Au-Si eutectic silicide formation. Finally we explore behavior and growth modes of an organic molecule on the Ag-Si interface.

  19. Biology of Blood

    Science.gov (United States)

    ... switch to the Professional version Home Blood Disorders Biology of Blood Overview of Blood Resources In This ... Version. DOCTORS: Click here for the Professional Version Biology of Blood Overview of Blood Components of Blood ...

  20. Blood Clotting and Pregnancy

    Medline Plus

    Full Text Available ... Blood Basics Blood Disorders Anemia Bleeding Disorders Blood Cancers Blood Clots Blood Clotting and Pregnancy Clots and ... Increased maternal age Other medical illness (e.g., cancer, infection) back to top How are Blood Clots ...