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  1. Article ; Online: Language of Uncertainty: the Expression of Decisional Conflict Related to Skin Cancer Prevention Recommendations.

    Strekalova, Yulia A / James, Vaughan S

    Journal of cancer education : the official journal of the American Association for Cancer Education

    2016  Volume 32, Issue 3, Page(s) 532–536

    Abstract: User-generated information on the Internet provides opportunities for the monitoring of health information consumer attitudes. For example, information about cancer prevention may cause decisional conflict. Yet posts and conversations shared by health ... ...

    Abstract User-generated information on the Internet provides opportunities for the monitoring of health information consumer attitudes. For example, information about cancer prevention may cause decisional conflict. Yet posts and conversations shared by health information consumers online are often not readily actionable for interpretation and decision-making due to their unstandardized format. This study extends prior research on the use of natural language as a predictor of consumer attitudes and provides a link to decision-making by evaluating the predictive role of uncertainty indicators expressed in natural language. Analyzed data included free-text comments and structured scale responses related to information about skin cancer prevention options. The study identified natural language indicators of uncertainty and showed that it can serve as a predictor of decisional conflict. The natural indicators of uncertainty reported here can facilitate the monitoring of health consumer perceptions about cancer prevention recommendations and inform education and communication campaign planning and evaluation.
    MeSH term(s) Adult ; Aged ; Conflict (Psychology) ; Decision Making ; Female ; Humans ; Male ; Middle Aged ; Natural Language Processing ; Skin Neoplasms/prevention & control ; Uncertainty
    Language English
    Publishing date 2016-01-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 632898-2
    ISSN 1543-0154 ; 0885-8195 ; 1543-1154
    ISSN (online) 1543-0154
    ISSN 0885-8195 ; 1543-1154
    DOI 10.1007/s13187-016-0985-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 2185: Show issues Location:
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    Jg. 1995 - 2021: Lesesall (1.OG)
    ab Jg. 2022: Lesesaal (EG)

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  2. Article: Crystallisation of tricalcium aluminate from sodium aluminate solution using slaked lime

    Salimi, Reza / James Vaughan

    Powder technology. 2016 June, v. 294

    2016  

    Abstract: Crystallisation of tricalcium aluminate (TCA) hydrate was investigated by reacting slaked lime with sodium aluminate solution at 368K in an agitated baffled batch and continuous reactors. Using an x-ray diffraction calibration established by the ... ...

    Abstract Crystallisation of tricalcium aluminate (TCA) hydrate was investigated by reacting slaked lime with sodium aluminate solution at 368K in an agitated baffled batch and continuous reactors. Using an x-ray diffraction calibration established by the intensity ratio of characteristic peaks of lime-TCA admixtures; it was determined that >90% of the slaked lime was converted to TCA within 5min in the batch reactor. From particle counting measurements, TCA nucleation and growth was observed within the first 30s by an increase in 2–5μm particles, whereas finer particle counts decreased due to lime dissolution. The mean particle size based on particle counting increased up to 10μm due to growth dominated by agglomeration of sub-particles over the course of 2h. The TCA particle morphology initiated as hexagonal platelets which became arranged as “rosettes” then filled in to become spherical. Reaction seeding with 10wt.% of the total final solid TCA mass resulted in a narrower particle size distribution. Seed loading did not significantly influence the particle morphology, however slight growth of TCA sub particles was evident from the micrographs. The effect of the key operating parameters, residence time and agitation intensity, were then assessed in the context of Bayer liquor filter aid production in an agitated continuous reactor. As the residence time was increased, the fine particle number concentration decreased and particle growth increased which was dominated by agglomeration. With a longer residence times, the particles become highly agglomerated leaving little void space which is undesirable in terms of filter aid quality. An agitation intensity of 600RPM which exerts a maximum Reynolds number of 9200 on the fluid phase based on tip speed and residence time of 30min generated the best filter aid in terms of minimising the fine particle fraction and minimising large agglomerates.
    Keywords agitation ; blood platelets ; calcium hydroxide ; calibration ; crystallization ; particle size ; particle size distribution ; powders ; Reynolds number ; sowing ; X-ray diffraction
    Language English
    Dates of publication 2016-06
    Size p. 472-483.
    Publishing place Elsevier B.V.
    Document type Article
    ISSN 0032-5910
    DOI 10.1016/j.powtec.2016.03.017
    Database NAL-Catalogue (AGRICOLA)

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  3. Article: Role of the Amorphous Phase during Sodium Aluminosilicate Precipitation

    Peng, Hong / Dilini Seneviratne / James Vaughan

    Industrial & engineering chemistry process design and development. 2018 Feb. 07, v. 57, no. 5

    2018  

    Abstract: In the Bayer process, reactive silica associated with bauxite dissolves into alkaline solution and subsequently precipitates as a sodium aluminosilicate “desilication product” (DSP). Multiple DSP phases can be formed, which include an amorphous solid as ... ...

    Abstract In the Bayer process, reactive silica associated with bauxite dissolves into alkaline solution and subsequently precipitates as a sodium aluminosilicate “desilication product” (DSP). Multiple DSP phases can be formed, which include an amorphous solid as well as crystalline zeolite A, sodalite, and cancrinite. Even though the ability to control DSP particle size would be of great practical benefit, there remains limited fundamental understanding of the precipitation process, especially during the early stages of the reaction. In this study, DSP was precipitated from synthetic NaOH–NaAl(OH)4–Na2SiO3–H2O solution at 75 and 90 °C. Four distinct reaction stages were observed: (1) precipitation of the amorphous solid, (2) dissolution of the amorphous solid, (3) growth of crystalline phases, and (4) maturation of the crystalline phases. In addition to the amorphous phase, the nucleation of both particles and two-dimensional crystal planes occurs in the early stages of the reaction. Subsequently, the amorphous phase dissolves, which feeds the early growth of the crystalline DSP phases. After the amorphous phase disappears, the crystal phases continue to grow with reactants from the bulk solution until equilibrium is approached. In the maturation stage, the solution silicate concentration decreases only slightly; however, during this time the sizes of individual crystals decrease slightly while the overall particle size increases via crystal agglomeration, which is promoted at higher temperature.
    Keywords bauxite ; crystals ; particle size ; process design ; silica ; silicates ; sodium ; temperature ; zeolites
    Language English
    Dates of publication 2018-0207
    Size p. 1408-1416.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 1484436-9
    ISSN 1520-5045 ; 0888-5885
    ISSN (online) 1520-5045
    ISSN 0888-5885
    DOI 10.1021/acs.iecr.7b04538
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  4. Article: The Anion Effect on Zeolite Linde Type A to Sodalite Phase Transformation

    Peng, Hong / James Vaughan / Mengliu Ding

    Industrial & engineering chemistry process design and development. 2018 July 10, v. 57, no. 31

    2018  

    Abstract: This study reports on the effect of three different salts (Na2CO3, NaCl, and Na2SO4) on desilication product (DSP) precipitation in synthetic Bayer liquor. Na2SO4 had a distinct effect compared with both Na2CO3 and NaCl as only nosean-sodalite formed. ... ...

    Abstract This study reports on the effect of three different salts (Na2CO3, NaCl, and Na2SO4) on desilication product (DSP) precipitation in synthetic Bayer liquor. Na2SO4 had a distinct effect compared with both Na2CO3 and NaCl as only nosean-sodalite formed. With the addition of Na2SO4, both the templating effect of SO42– and subunit condensation processes appear to be involved. Na2CO3 promoted the transformation of zeolite Linde Type A (LTA) to sodalite, while NaCl did not have a significant effect on phase transformation compared with the control test. The unit cell size of zeolite LTA did not change as a function of time and anions present. The unit cell size of sodalite did significantly change as a function of salts added as follows: NaCl < control < Na2CO3 < Na2SO4. UV-Raman spectra exhibited signature peaks for sodalite with Na2CO3 and Na2SO4 which is useful since the differences in the XRD patterns for the same materials are subtle.
    Keywords anions ; phase transition ; process design ; sodium carbonate ; sodium chloride ; sodium sulfate ; X-ray diffraction ; zeolites
    Language English
    Dates of publication 2018-0710
    Size p. 10292-10302.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 1484436-9
    ISSN 1520-5045 ; 0888-5885
    ISSN (online) 1520-5045
    ISSN 0888-5885
    DOI 10.1021/acs.iecr.8b02026
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  5. Article ; Online: Drowning prevention

    David R Meddings, MD / Justin-Paul Scarr, MBA / Kelly Larson, MPH / James Vaughan / Etienne G Krug, MD

    The Lancet Public Health, Vol 6, Iss 9, Pp e692-e

    turning the tide on a leading killer

    2021  Volume 695

    Abstract: Summary: Drowning is a leading killer, particularly of children and young adults, yet has been greatly neglected. Despite accounting for a higher number of deaths than many other substantial public health issues, drowning has not benefitted from the ... ...

    Abstract Summary: Drowning is a leading killer, particularly of children and young adults, yet has been greatly neglected. Despite accounting for a higher number of deaths than many other substantial public health issues, drowning has not benefitted from the targeted attention it requires, which is particularly tragic because low cost and effective drowning prevention interventions exist. Therefore, the recent UN General Assembly's adoption of a resolution on global drowning prevention is a historic first, and offers an exciting opportunity by providing a comprehensive framework and a practical roadmap that a range of actors and sectors, including governments, can follow to address the challenge of drowning prevention.
    Keywords Public aspects of medicine ; RA1-1270
    Language English
    Publishing date 2021-09-01T00:00:00Z
    Publisher Elsevier
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Assessing Risk Perceptions of E-Smoking Devices: a Cross-Sectional Consumer Survey.

    Strekalova, Yulia A / Karimipour, Nicki / James, Vaughan / Treise, Debbie

    The journal of behavioral health services & research

    2018  Volume 45, Issue 3, Page(s) 499–505

    MeSH term(s) Adolescent ; Adult ; African Americans/psychology ; Aged ; Aged, 80 and over ; Cross-Sectional Studies ; Female ; Health Knowledge, Attitudes, Practice ; Humans ; Male ; Middle Aged ; Perception ; Regression Analysis ; Risk ; Vaping/psychology ; Young Adult
    Language English
    Publishing date 2018-02-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2070437-9
    ISSN 1556-3308 ; 1094-3412
    ISSN (online) 1556-3308
    ISSN 1094-3412
    DOI 10.1007/s11414-018-9594-y
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  7. Article: Fine control of NaCl crystal size and particle size in percrystallisation by tuning the morphology of carbonised sucrose membranes

    Madsen, Rasmus S.K / Anne Julbe / James Vaughan / João C. Diniz da Costa / Julius Motuzas

    Journal of membrane science. 2018 Dec. 01, v. 567

    2018  

    Abstract: This work investigates the morphological features of porous carbon membranes and operation effects for the percrystallisation of NaCl. The carbon membranes were prepared by dip coating of α-alumina tubes in a sucrose solution, followed by a post vacuum- ... ...

    Abstract This work investigates the morphological features of porous carbon membranes and operation effects for the percrystallisation of NaCl. The carbon membranes were prepared by dip coating of α-alumina tubes in a sucrose solution, followed by a post vacuum-assisted impregnation and carbonisation in an inert gas atmosphere. The carbonisation temperature played an important role, as the highest pore volume and wet contact angle were achieved at the highest carbonisation temperature of 750 °C. In turn, this created hydrophobic carbon membranes delivering the highest water flux of 33 L m−2 h−1 (NaCl 17.5 wt%) and NaCl flux of 6.9 kg m−2 h−1. The solvent (water) and the solute (NaCl) crystals were separated in a single-step in a wet thin-film formed on the permeate face of the membrane under pervaporation conditions, delivering almost pure water (> 99%) and dry NaCl crystals. The carbon membrane with the highest water flux delivered the smallest NaCl crystallite sizes, the smaller particle sizes, and the narrowest particle size distribution (< 2 μm). This was attributed to the fast water evaporation rate from the wet thin-film, as crystal growth rate was reduced and NaCl particle aggregation was restricted. A finer control of NaCl crystallite and particle size was achieved by tailoring the morphological features of the carbon membranes and operating at the lowest vacuum pressure.
    Keywords aluminum oxide ; artificial membranes ; carbon ; carbonization ; coatings ; contact angle ; crystallites ; evaporation rate ; hydrophobicity ; particle size ; particle size distribution ; pervaporation ; sodium chloride ; solutes ; solvents ; sucrose ; temperature
    Language English
    Dates of publication 2018-1201
    Size p. 157-165.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 194516-6
    ISSN 0376-7388
    ISSN 0376-7388
    DOI 10.1016/j.memsci.2018.09.003
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    In stock of ZB MED Bonn / Germany

    Z 78/706: Show issues

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  8. Article ; Online: Field Epidemiology and Laboratory Training Programs in sub-Saharan Africa from 2004 to 2010

    Peter Nsubuga / Kenneth Johnson / Christopher Tetteh / Joseph Oundo / Andrew Weathers / James Vaughan / Suzanne Elbon / Mufuta Tshimanga / Faustine Ndugulile / Chima Ohuabunwo / Michele Evering-Watley / Fausta Mosha / Obinna Oleribe / Patrick Nguku / Lora Davis / Nykiconia Preacely / Richard Luce / Simon Antara / Hiari Imara /
    Yassa Ndjakani / Timothy Doyle / Yescenia Espinosa / Ditu Kazambu / Dieula Delissaint / John Ngulefac / Kariuki Njenga

    The Pan African Medical Journal, Vol 10, Iss

    need, the process and prospects

    2011  Volume 24

    Abstract: health workforce that can operate multi-disease surveillance and response systems. ...

    Abstract health workforce that can operate multi-disease surveillance and response systems.
    Keywords Field epidemiology ; laboratory management ; multi-disease surveillance and response systems ; public health workforce capacity building ; Medicine ; R
    Language English
    Publishing date 2011-10-01T00:00:00Z
    Publisher The Pan African Medical Journal
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Book: Mechanical handling of parcels and mail

    Franklin, James Vaughan / Mahy, John Henry

    (Railway paper ; 38)

    1950  

    Author's details by James Vaughan Franklin and John Henry Mahy
    Series title Railway paper ; 38
    Language English
    Size 45 S., Ill., graph. Darst.
    Publisher Inst. of Civil Engineers
    Publishing place London
    Document type Book
    Note Paper pres. at the Institution of Civil Engineers Railway Engineering Division meeting, Tuesday, 7 March, 1950. - Session 1949-50
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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