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Dietary fibre intakes of two cohorts of New Zealand adults with and without constipation
- H.M. Ng, J. Maggo, C. Wall, S. Bayer, N.C. Roy, R. Gearry
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- Journal:
- Proceedings of the Nutrition Society / Volume 83 / Issue OCE1 / April 2024
- Published online by Cambridge University Press:
- 07 May 2024, E72
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Adequate dietary fibre (DF) intake is recommended to relieve constipation and improve gut health(1). It is often assumed that individuals with constipation have relatively low DF intake and do not meet the recommended adequate intake of 25 g and 30 g for females and males, respectively. The 2008/09 New Zealand Adult Nutrition Survey confirmed that the mean DF was 17.9 grams (g) per day for females and 22.8 g per day for males, which was well below the recommended adequate intake(2). With the continuous shift of dietary patterns over time, we sought to compare the current usual DF intake of two cohorts of New Zealand adults: those who have constipation with those without constipation but with relatively low DF intake. We report baseline dietary data from two randomised controlled dietary studies (Kiwifruit Ingestion to Normalise Gut Symptoms (KINGS) (ACTRN12621000621819) and Bread Related Effects on microbiAl Distribution (BREAD) (ACTRN12622000884707)) conducted in Christchurch, New Zealand in 2021 and 2022, respectively. The KINGS study included adults with either functional constipation or constipation-predominant irritable bowel syndrome to consume either two green kiwifruit or maltodextrin for four weeks. The BREAD study is a crossover study and included healthy adults without constipation but with relatively low DF intake (<18 g for females, <22 g for males) to consume two types of bread with different DF content, each bread for four weeks separated by a two-week washout period. All participants completed a non-consecutive three-day food diary at baseline. Dietary data were entered into FoodWorks Online Professional (Xyris Software Australia, 2021) to assess mean daily DF intake. Fifty-six adults from the KINGS study (n = 48 females, n= 8 males; mean age ± standard deviation: 42.8 ± 12.6 years) and BREAD study (n = 33 females, n= 23 males; mean age: 40.4 ± 13.4 years) completed a baseline food diary. In the KINGS study, females with constipation had a daily mean DF intake of 25.0 ± 9.4 g whilst male participants consumed 26.9 ± 5.0 g per day. In the BREAD study, females without constipation had a mean daily DF intake of 19.4 ± 5.8 g, whereas males had 22.6 ± 8.5 g per day. There was a statistically significant difference in the mean daily DF intake between females with constipation and those without constipation (p < 0.001) but not between males (p = 0.19). These two studies found that DF intakes among females with constipation were not as relatively low as previously assumed, as they met their adequate intake of 25 g. Further data analysis from the KINGS and BREAD studies will reveal the effects of using diet to manage constipation and promote better gut health in these two cohorts of New Zealand adults.
P03-68 - Are there effects of the type of antipsychotic medication on the subjective quality of life in patients suffering from schizophrenia?
- S. Jaeger, T. Steinert, C. Pfiffner, G. Längle, G. Eschweiler, W. Bayer, D. Croissant, P. Weiser, T. Becker, R. Kilian
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- Journal:
- European Psychiatry / Volume 25 / Issue S1 / 2010
- Published online by Cambridge University Press:
- 17 April 2020, 25-E1178
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We investigated whether the type of antipsychotic treatment has an impact on patients’ subjective quality of life (QoL).
In a prospective naturalistic long-term study, 374 patients meeting ICD-10 criteria for schizophrenia or schizoaffective disorder were examined biannually over a two-year period with regards to QoL, psychopathology, social functioning, use of medical and psychosocial services, compliance, side effects and current neuroleptic treatment. QoL was assessed by the Berliner Lebensqualitätsprofil (BeLP), an adaption of the Lancashire Quality of Life Profile. First examination took place two weeks around discharge from a psychiatric clinic. At study entry, all participants were receiving neuroleptic medication of either quetiapine, risperidone or olanzapine. Mixed regression analysis taking into account the unbalanced panel structure of the data and adjusted for selection bias by means of propensity scores were used for data analysis.
Overall quality of life improved continuously during the two years observed period regardless of the type of neuroleptic. A small, but significant difference emerged when comparing quetiapine monotherapy treatment with olanzapine monotherapy or with a combination treatment of conventional and atypical antipsychotics. QoL of patients treated with olanzapine was generally worse than that of patients treated with quetiapine but improved slightly more over the course of time. In total time and type of medication explained only small proportions of variance in QoL.
Type of neuroleptic had only marginal impact on the subjective QoL of our sample. In order to explain changes in quality of life, research on social and individual factors seems to be more promising.
PW01-186 - Effects Of Longterm Treatment With Atypical Neuroleptics For Patients With Schizophrenia (Elan): Medication Use, Adherence, Functional Impairment, Quality Of Life
- G. Laengle, W. Bayer, G. Eschweiler, S. Jäger, C. Pfiffner, P. Weiser, D. Croissant, R. Kilian, T. Becker, T. Steinert
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- Journal:
- European Psychiatry / Volume 25 / Issue S1 / 2010
- Published online by Cambridge University Press:
- 17 April 2020, 25-E1593
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Objectives
Collecting prospective data on medication adherence, course of illness, course of treatment, cost effectiveness and quality of life among patients with schizophrenia under the German health system.
MethodsThe ELAN study was conducted as a multi-centre, non-interventional observation study. 374 patients with a diagnosis of schizophrenia or schizoaffective disorder (ICD-10 F2) who had been discharged with a medication of quetiapine (N=183), olanzapine (N=91) or risperidone (N=100) were included. Follow-up interviews were conducted after 6,12,18 and 24 months. Applied instruments comprised PANSS, MARS-S, EPS-M, AIMS-S, GAF, ZST and a questionnaire for quality of life.
ResultsFor each follow-up, at least 80% of the original sample could be included. After two years, between 39% and 43% of patients continued to take the drug prescribed at discharge. Only between 4% and 7% of patients received no neuroleptic treatment in the last 6 months, respectively. The variety of drugs used increased during the course. Only small differences could be found regarding the defined outcome measures (PANSS, GAF, rehospitalisation rate) and side effects. Changes in medication were mostly due to insufficient efficacy or side effects. Doctor's recommendations had an important influence on patients’ decisions.
ConclusionsUnder conditions of routine treatment, medication adherence was much greater and differences between drugs were smaller than reported in randomised controlled clinical trials. Taking into account the low sample selection bias and the small percentage of lost-to-follow-up subjects, this study provides some new insight into routine clinical treatment and outcomes in patients with schizophrenia.
A Multi-Centre Pragmatic Trial of Antipsychotic Drug Treatment
- R. Kilian, T. Steinert, P. Weiser, W. Bayer, S. Jaeger, C. Pfiffner, K. Frasch, G. Eschweiler, T. Messer, D. Croissant, T. Becker, G. Längle
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- Journal:
- European Psychiatry / Volume 26 / Issue S2 / March 2011
- Published online by Cambridge University Press:
- 16 April 2020, p. 2203
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The ELAN study is a prospective multi centre observational trial on the effectiveness and safety of long-term antipsychotic treatment of people with schizophrenia or schizoaffective disorders with quetiapine in comparison to olanzapine and risperidone under real world treatment conditions.
374 adult persons with schizophrenia or schizoaffective disorder prescribed antipsychotic maintenance therapy with quetiapine, olanzapine or risperidone were included at discharge from inpatient treatment. Psychotropic regimen, psychopathological symptoms, general and cognitive functioning, negative side-effects and quality of life were assessed before discharge and at 6, 12, 18 and 24 month follow-up assessments. Intention-to-treat analyses and crossover analyses were conducted by mixed-effects regression models including random linear time effects and time x treatment effects, controlling for baseline differences and additional psychotropic medication and using propensity scores to control for selection bias.
As indicated by significant linear time effects the patients improved with regard to psychopathological symptoms, general functioning, subjective quality of life and cognitive processing speed. No change of extrapyramidal motor side-effects, body mass index or waist circumference was obtained. The lack of any significant time x treatment interaction effects indicated no differences in the safety or effectiveness between the three antipsychotics. Nevertheless, the average hospital admission rate of patients receiving olanzapine was lower in comparison to patients receiving quetiapine or risperidone.
O-29 - Botulinum Neurotoxin for Treatment of Depression
- T.H.C. Kruger, C. de Boer, N. Kalak, J. Beck, T. Götz, T. Schmidt, M. Hodzic, U. Bayer, T. Kollmann, K. Kollewe, D. Sönmez, K. Duntsch, M.D. Haug, D. Dressler, M. Schedlowski, M. Hatzinger, S. Brand, E. Holsboer-Trachsler, M.A. Wollmer
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- Journal:
- European Psychiatry / Volume 27 / Issue S1 / 2012
- Published online by Cambridge University Press:
- 15 April 2020, p. 1
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Introduction
Frowning expresses negative emotions like anger, fear, and sadness. According to the facial feedback hypothesis, suppression of frowning will also diminish the corresponding negative emotions. Hence, mood improvement has been observed in patients who underwent treatment of glabellar frown lines with botulinum neurotoxin. This observation suggests the possibility that the intervention may be employed for the management of psychiatric disorders associated with negative emotions. Preliminary data from an open case series indicate that the intervention might improve the symptoms of depression.
Aims & objectivesTo test whether an onabotulinumtoxinA injection into the glabellar region is benefical as an adjunctive treatment of major depression within a clinical trial.
MethodsWe used a randomized, double-blinded, placebo-controlled study design (n = 30; ClinicalTrials.gov, number, NCT00934687).
ResultsWe show that a single onabotulinumtoxinA treatment shortly leads to a strong and sustained improvement in partly chronic major depression that did not respond sufficiently to previous treatment. As for the primary end-point, Hamilton Depression Rating Scale (HAM-D17) six weeks after treatment compared to baseline, scores of onabotulinumtoxinA recipients showed 37.9% (8.34 points) more improvement than those of placebo-treated participants (F = 12.30, p = 0.002, η2 = 0.31, d = 1.28).
ConclusionOur findings support the concept that the facial musculature not only expresses, but also regulates, mood states. As it stands, treatment of glabellar frown lines with botulinum neurotoxin can be considered for depressed patients with the objective of inducing mood-lifting effects.
Effect of Temperature and Photoperiod on Triclopyr, Picloram, and 2,4,5-T Translocation
- S. R. Radosevich, D. E. Bayer
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- Journal:
- Weed Science / Volume 27 / Issue 1 / January 1979
- Published online by Cambridge University Press:
- 12 June 2017, pp. 22-27
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The effects of photoperiod and temperature on the translocation of triclopyr {[1(3,5,6-trichloro-2-pyridinyl)oxy] acetic acid}, picloram (4-amino-3,5,6-trichloropicolinic acid) and 2,4,5-T [(2,4,5-trichlorophenoxy)acetic acid] were studied on tanoak [Lithocarpus densiflorus (Hook. & Arn.) Rehd.], snowbush ceanothus (Ceanothus velutinus Dougl.), bigleaf maple (Acer macrophyllum Pursh), bean (Phaseolus vulgaris L. var. ‘Red Kidney’) and barley (Hordeum vulgare L. var. CM-67). Isolation of 14C and analysis for the radioactive herbicides revealed little metabolism of the herbicides. Regardless of herbicide or plant species herbicide movement was greatest under warm temperature and long day conditions. Among the herbicides tested, 14C associated with triclopyr was the most mobile in each species. Each herbicide moved readily in the symplast but root applications of each herbicide revealed limited apoplastic mobility.
Simultaneous Determinations of MSMA and Arsenic Acid in Plants
- J. U. Lakso, S. A. Peoples, D. E. Bayer
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- Journal:
- Weed Science / Volume 21 / Issue 3 / May 1973
- Published online by Cambridge University Press:
- 12 June 2017, pp. 166-169
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Monosodium methanearsonate (MSMA) and arsenic acid (AA) were measured simultaneously in johnsongrass (Sorghum halepense (L.) Pers.) and cottonseed (Gossypium hirsutum L. ‘SJ-1’) by a bicolorimetric method. Tissues from plants sprayed with MSMA while growing and tissues with MSMA and AA added just prior to extraction were analyzed. Johnsongrass sprayed with MSMA solution at 11.2 kg/ha contained, on a dry weight basis, 423.0 ppmw of MSMA and 0.00 ppmw of AA at 7 days and 10.83 and 0.21 ppmw, respectively, after 54 days of regrowth. The cotton plants were sprayed twice to runoff with MSMA, first with 0.3 g/L and second with 1.2 g/L. Cottonseed from the sprayed cotton plants contained, on a dry weight basis, 2.45 ppmw of MSMA and 0.08 ppmw of AA after the first picking and 3.02 and 0.10 ppmw, respectively, after the second. Background levels of MSMA and AA were, respectively, on a dry weight basis, 0.63 and 0.02 ppmw in johnsongrass and 0.58 and 0.00 ppmw in cottonseed.
Contributors
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- By Masoud Azodi, Patricia Baetens, Steven Bayer, Joel Bernstein, Jonathan D. Black, Christophe Blockeel, Carolien M. Boomsma, Birgit Borgström, Mark Bowman, Nicholas Brook, Elisabeth Carlsen, Peter Carne, Ying Cheong, Jen-Ruei Chen, Erin Clark, S. Alberto Dávila Garza, Sunita De Sousa, Michel De Vos, Leo Doherty, Patricio Donoso, Cindy M. P. Duke, Human M. Fatemi, Alison Fernbach, Juan A. Garcia-Velasco, Elizabeth S. Ginsburg, Dorothy A. Greenfeld, William M. Hague, Daniel Hajioff, Tristan Hardy, Catherine Henry, Outi Hovatta, John Hutton, Gordana Ivanovic, Sameer Jatkar, Shilpa Jesudason, Theo Joseph, Amanda Kallen, Sonal Karia, Bala Karunakaran, Jenneke C. Kasius, Ben Kroon, Dimitra Kyrou, Robert Lahoud, Jennifer M Levine, Inge Liebaers, Shane T. Lipskind, Derek Lok, Nick S. Macklon, Manveen (Manny) Mangat, Tom P. Manolitsas, S. McDowell, Cherise Mooy, Mark R. Morton, Andrew Murray, Robert J. Norman, Sara Ornaghi, Israel Ortega, Michael J. Paidas, Evaggelos Papanikolaou, Pasquale Patrizio, Sofie Piessens, Biljana Popovic Todorovic, Luk Rombauts, Katrina Rowan, Denny Sakkas, P. Sanhueza, Kirsten Tryde Schmidt, Mark Teoh, Hammed A. Tijani, Jelena Todorovic, Saioa Torrealday, Herman Tournaye, Geoffrey Trew, W. Verpoest, Veerle Vloeberghs, A. Yazdani
- Edited by Nick S. Macklon, University of Southampton, Human M. Fatemi, Robert J. Norman, University of Adelaide, Pasquale Patrizio
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- Book:
- Case Studies in Assisted Reproduction
- Published online:
- 05 February 2015
- Print publication:
- 22 January 2015, pp ix-xiv
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‘I often worry about the older person being in that system’: exploring the key influences on the provision of dignified care for older people in acute hospitals
- M. CALNAN, W. TADD, S. CALNAN, A. HILLMAN, S. READ, A. BAYER
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- Journal:
- Ageing & Society / Volume 33 / Issue 3 / April 2013
- Published online by Cambridge University Press:
- 27 February 2012, pp. 465-485
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- April 2013
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Older age is one stage of the lifecourse where dignity maybe threatened due to the vulnerability created by increased incapacity, frailty and cognitive decline in combination with a lack of social and economic resources. Evidence suggests that it is in contact with health and welfare services where dignity is most threatened. This study explored the experiences of older people in acute National Health Service (NHS) Trusts in relation to dignified care and the organisational, occupational and cultural factors that affect it. These objectives were examined through an ethnography of four acute hospital Trusts in England and Wales, which involved interviews with older people (65+) recently discharged from hospital, their relatives/carers, and Trust managers, practitioners and other staff, complemented by evidence from non-participant observation. The picture which emerged was of a lack of consistency in the provision of dignified care which appears to be explained by the dominance of priorities of the system and organisation tied together with the interests of ward staff and clinicians. The emphasis on clinical specialism meant that staff often lacked the knowledge and skills to care for older patients whose acute illness is often compounded by physical and mental co-morbidities. The physical environment of acute wards was often poorly designed, confusing and inaccessible, and might be seen as ‘not fit for purpose’ to treat their main users, those over 65 years, with dignity. Informants generally recognised this but concluded that it was the older person who was in the ‘wrong place’, and assumed that there must be a better place for ‘them’. Thus, the present system in acute hospitals points to an inbuilt discrimination against the provision of high-quality care for older people. There needs to be a change in the culture of acute medicine so that it is inclusive of older people who have chronic co-morbidities and confusion as well as acute clinical needs.
Engineered Nanocomposites for Capturing and Converting Carbon Dioxide into Useful Chemicals
- Michael Ashley, Punnamchandar Ramidi, Timothy Bontrager, Charles Magiera, Anindya Ghosh, Alexandru S. Biris, Ilker S. Bayer, Abhijit Biswas
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- Journal:
- MRS Online Proceedings Library Archive / Volume 1441 / 2012
- Published online by Cambridge University Press:
- 15 June 2012, mrss12-1441-p05-22
- Print publication:
- 2012
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We describe a simple drop-cast processing method to synthesize multicomponent polymer-based nanocomposites for carbon dioxide (CO2) capture and conversion into stable carbonates. These multicomponent nanocomposites are made of combination of different metal oxide nanoparticles and catalysts in a porous polymer matrix. The formulation includes the combination of titanium dioxide and magnesium oxide, ruthenium oxide, and iron oxide where each metal oxide exhibits its own catalytic function of trapping carbon dioxide. Such a material system provides numerous localized catalytically active hot reaction spots generated by the dispersed multifunctional oxide nanoparticles that react with CO2 when exposed to the gas stream and instantaneously convert the captured carbon into carbonates. Finally, we discuss our ongoing work on the possibility of converting captured-carbon-formed-carbonate into useful products/commodities such as methane, methanol and formic acid. The integration of polymer materials with catalytically active nanomaterials shows a promising strategy for CO2 capture and conversion into useful products towards achieving a sustainable energy future.
Engineered Bone-Inspired Multicomponent Bionanocomposite Scaffolds with Tunable Hardness and Modulus
- Matthew Labriola, Constance Slaboch, Timothy C. Ovaert, Tao Wang, George Csaba, Ilker S. Bayer, Enkeleda Dervishi, Alexandru S. Biris, Anindya Ghosh, Rajeev Gupta, Abhijit Biswas
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- Journal:
- MRS Online Proceedings Library Archive / Volume 1465 / 2012
- Published online by Cambridge University Press:
- 12 June 2012, mrss12-1465-ss02-05
- Print publication:
- 2012
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We show a novel, bioengineered, moldable platform for bone regeneration composed of porous bionanocomposite scaffolds made of components that are normally found in bone tissue (calcium, collagen, carbonate, sodium, and phosphorous). To accommodate high- or low-stress environments, the hardness and modulus (stiffness) of these scaffolds can be tuned in a wide range in Megapascal (MPa) to Gigapascal (GPa) regions, while maintaining the required viscoelasticity. Our approach to control the mechanical properties is based on a new formulation of mineralized bioscaffolds by incorporation of calcium carbonate in which, calcium and phosphorous are in the form of calcite, calcium polyphosphate (CPP) and hydroxyapatite (HAP). The variation in the calcium carbonate concentration allows tuning of calcite/CPP contents in the bioscaffold to tailor the degree of mineralization and mechanical and viscoelastic properties that closely match those of natural bone. Our results demonstrate an ideal framework for new bone scaffold designs for advanced bone substitute applications.
The derealization of rape
- Betty M. Bayer, Robert S. Steele
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- Journal:
- Behavioral and Brain Sciences / Volume 15 / Issue 2 / June 1992
- Published online by Cambridge University Press:
- 19 May 2011, pp. 380-381
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Bone-Inspired Multicomponent Bionanocomposites with a Simple Drop-Cast Processing Strategy
- Abhijit Biswas, Alexandru S. Biris, Ilker S. Bayer
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- Journal:
- MRS Online Proceedings Library Archive / Volume 1355 / 2011
- Published online by Cambridge University Press:
- 18 July 2011, mrss11-1355-jj10-12
- Print publication:
- 2011
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We describe an innovative and simple drop-cast processing strategy to create bonelike multicomponent bionanocomposite materials that consist of an organic poly(ε-caprolactone) (PCL) matrix, minerals such as hydroxyapatite (HAP) and CaCO3, and collagen fibers. The process allows morphological and structural control to achieve the desired nanostructure of the bone mimics. The fabrication method involves adding inorganic and organic components sequentially followed by controlling the growth conditions and composition. This enables organization of collagen nanofibers (∼ 100 nm) into scaffolds while simultaneously allowing nucleation and co-alignment of hydroxyapatite spheres (∼ 100 – 500 nm) within aligned, thermally stable collagen fibers in the porous PCL matrix. We achieved high calcium (26%) and oxygen (17%) within the bioscaffold and adequate phosphorous compositions comparable to the levels of bone tissues. Adequate mineralization along with high oxygen content may help maintain the required bone mineral density and revascularization for nutrient and compensate for the loss of oxygen delivered to the bone cells. Furthermore, since the bionanocomposite scaffold is made of natural materials (calcium, phosphorous and collagen) found in bone tissue, the formulation makes it an excellent biocompatible/biodegradable material. Our preliminary results suggest huge potential of these advanced bionanocomposite scaffolds for bone substitutes and tissue engineering applications.
Contributors
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- By Rose Teteki Abbey, K. C. Abraham, David Tuesday Adamo, LeRoy H. Aden, Efrain Agosto, Victor Aguilan, Gillian T. W. Ahlgren, Charanjit Kaur AjitSingh, Dorothy B E A Akoto, Giuseppe Alberigo, Daniel E. Albrecht, Ruth Albrecht, Daniel O. Aleshire, Urs Altermatt, Anand Amaladass, Michael Amaladoss, James N. Amanze, Lesley G. Anderson, Thomas C. Anderson, Victor Anderson, Hope S. Antone, María Pilar Aquino, Paula Arai, Victorio Araya Guillén, S. Wesley Ariarajah, Ellen T. Armour, Brett Gregory Armstrong, Atsuhiro Asano, Naim Stifan Ateek, Mahmoud Ayoub, John Alembillah Azumah, Mercedes L. García Bachmann, Irena Backus, J. Wayne Baker, Mieke Bal, Lewis V. Baldwin, William Barbieri, António Barbosa da Silva, David Basinger, Bolaji Olukemi Bateye, Oswald Bayer, Daniel H. Bays, Rosalie Beck, Nancy Elizabeth Bedford, Guy-Thomas Bedouelle, Chorbishop Seely Beggiani, Wolfgang Behringer, Christopher M. Bellitto, Byard Bennett, Harold V. Bennett, Teresa Berger, Miguel A. Bernad, Henley Bernard, Alan E. Bernstein, Jon L. Berquist, Johannes Beutler, Ana María Bidegain, Matthew P. Binkewicz, Jennifer Bird, Joseph Blenkinsopp, Dmytro Bondarenko, Paulo Bonfatti, Riet en Pim Bons-Storm, Jessica A. Boon, Marcus J. Borg, Mark Bosco, Peter C. Bouteneff, François Bovon, William D. Bowman, Paul S. Boyer, David Brakke, Richard E. Brantley, Marcus Braybrooke, Ian Breward, Ênio José da Costa Brito, Jewel Spears Brooker, Johannes Brosseder, Nicholas Canfield Read Brown, Robert F. Brown, Pamela K. Brubaker, Walter Brueggemann, Bishop Colin O. Buchanan, Stanley M. Burgess, Amy Nelson Burnett, J. Patout Burns, David B. Burrell, David Buttrick, James P. Byrd, Lavinia Byrne, Gerado Caetano, Marcos Caldas, Alkiviadis Calivas, William J. Callahan, Salvatore Calomino, Euan K. Cameron, William S. Campbell, Marcelo Ayres Camurça, Daniel F. Caner, Paul E. Capetz, Carlos F. Cardoza-Orlandi, Patrick W. Carey, Barbara Carvill, Hal Cauthron, Subhadra Mitra Channa, Mark D. Chapman, James H. Charlesworth, Kenneth R. Chase, Chen Zemin, Luciano Chianeque, Philip Chia Phin Yin, Francisca H. Chimhanda, Daniel Chiquete, John T. Chirban, Soobin Choi, Robert Choquette, Mita Choudhury, Gerald Christianson, John Chryssavgis, Sejong Chun, Esther Chung-Kim, Charles M. A. Clark, Elizabeth A. Clark, Sathianathan Clarke, Fred Cloud, John B. Cobb, W. Owen Cole, John A Coleman, John J. Collins, Sylvia Collins-Mayo, Paul K. Conkin, Beth A. Conklin, Sean Connolly, Demetrios J. Constantelos, Michael A. Conway, Paula M. Cooey, Austin Cooper, Michael L. Cooper-White, Pamela Cooper-White, L. William Countryman, Sérgio Coutinho, Pamela Couture, Shannon Craigo-Snell, James L. Crenshaw, David Crowner, Humberto Horacio Cucchetti, Lawrence S. Cunningham, Elizabeth Mason Currier, Emmanuel Cutrone, Mary L. Daniel, David D. Daniels, Robert Darden, Rolf Darge, Isaiah Dau, Jeffry C. Davis, Jane Dawson, Valentin Dedji, John W. de Gruchy, Paul DeHart, Wendy J. Deichmann Edwards, Miguel A. De La Torre, George E. Demacopoulos, Thomas de Mayo, Leah DeVun, Beatriz de Vasconcellos Dias, Dennis C. Dickerson, John M. Dillon, Luis Miguel Donatello, Igor Dorfmann-Lazarev, Susanna Drake, Jonathan A. Draper, N. Dreher Martin, Otto Dreydoppel, Angelyn Dries, A. J. Droge, Francis X. D'Sa, Marilyn Dunn, Nicole Wilkinson Duran, Rifaat Ebied, Mark J. Edwards, William H. Edwards, Leonard H. Ehrlich, Nancy L. Eiesland, Martin Elbel, J. Harold Ellens, Stephen Ellingson, Marvin M. Ellison, Robert Ellsberg, Jean Bethke Elshtain, Eldon Jay Epp, Peter C. Erb, Tassilo Erhardt, Maria Erling, Noel Leo Erskine, Gillian R. Evans, Virginia Fabella, Michael A. Fahey, Edward Farley, Margaret A. Farley, Wendy Farley, Robert Fastiggi, Seena Fazel, Duncan S. Ferguson, Helwar Figueroa, Paul Corby Finney, Kyriaki Karidoyanes FitzGerald, Thomas E. FitzGerald, John R. Fitzmier, Marie Therese Flanagan, Sabina Flanagan, Claude Flipo, Ronald B. Flowers, Carole Fontaine, David Ford, Mary Ford, Stephanie A. Ford, Jim Forest, William Franke, Robert M. Franklin, Ruth Franzén, Edward H. Friedman, Samuel Frouisou, Lorelei F. Fuchs, Jojo M. Fung, Inger Furseth, Richard R. Gaillardetz, Brandon Gallaher, China Galland, Mark Galli, Ismael García, Tharscisse Gatwa, Jean-Marie Gaudeul, Luis María Gavilanes del Castillo, Pavel L. Gavrilyuk, Volney P. Gay, Metropolitan Athanasios Geevargis, Kondothra M. George, Mary Gerhart, Simon Gikandi, Maurice Gilbert, Michael J. Gillgannon, Verónica Giménez Beliveau, Terryl Givens, Beth Glazier-McDonald, Philip Gleason, Menghun Goh, Brian Golding, Bishop Hilario M. Gomez, Michelle A. Gonzalez, Donald K. Gorrell, Roy Gottfried, Tamara Grdzelidze, Joel B. Green, Niels Henrik Gregersen, Cristina Grenholm, Herbert Griffiths, Eric W. Gritsch, Erich S. Gruen, Christoffer H. Grundmann, Paul H. Gundani, Jon P. Gunnemann, Petre Guran, Vidar L. Haanes, Jeremiah M. Hackett, Getatchew Haile, Douglas John Hall, Nicholas Hammond, Daphne Hampson, Jehu J. Hanciles, Barry Hankins, Jennifer Haraguchi, Stanley S. Harakas, Anthony John Harding, Conrad L. Harkins, J. William Harmless, Marjory Harper, Amir Harrak, Joel F. Harrington, Mark W. Harris, Susan Ashbrook Harvey, Van A. Harvey, R. Chris Hassel, Jione Havea, Daniel Hawk, Diana L. Hayes, Leslie Hayes, Priscilla Hayner, S. Mark Heim, Simo Heininen, Richard P. Heitzenrater, Eila Helander, David Hempton, Scott H. Hendrix, Jan-Olav Henriksen, Gina Hens-Piazza, Carter Heyward, Nicholas J. Higham, David Hilliard, Norman A. Hjelm, Peter C. Hodgson, Arthur Holder, M. Jan Holton, Dwight N. Hopkins, Ronnie Po-chia Hsia, Po-Ho Huang, James Hudnut-Beumler, Jennifer S. Hughes, Leonard M. Hummel, Mary E. Hunt, Laennec Hurbon, Mark Hutchinson, Susan E. Hylen, Mary Beth Ingham, H. Larry Ingle, Dale T. Irvin, Jon Isaak, Paul John Isaak, Ada María Isasi-Díaz, Hans Raun Iversen, Margaret C. Jacob, Arthur James, Maria Jansdotter-Samuelsson, David Jasper, Werner G. Jeanrond, Renée Jeffery, David Lyle Jeffrey, Theodore W. Jennings, David H. Jensen, Robin Margaret Jensen, David Jobling, Dale A. Johnson, Elizabeth A. Johnson, Maxwell E. Johnson, Sarah Johnson, Mark D. Johnston, F. Stanley Jones, James William Jones, John R. Jones, Alissa Jones Nelson, Inge Jonsson, Jan Joosten, Elizabeth Judd, Mulambya Peggy Kabonde, Robert Kaggwa, Sylvester Kahakwa, Isaac Kalimi, Ogbu U. Kalu, Eunice Kamaara, Wayne C. Kannaday, Musimbi Kanyoro, Veli-Matti Kärkkäinen, Frank Kaufmann, Léon Nguapitshi Kayongo, Richard Kearney, Alice A. Keefe, Ralph Keen, Catherine Keller, Anthony J. Kelly, Karen Kennelly, Kathi Lynn Kern, Fergus Kerr, Edward Kessler, George Kilcourse, Heup Young Kim, Kim Sung-Hae, Kim Yong-Bock, Kim Yung Suk, Richard King, Thomas M. King, Robert M. Kingdon, Ross Kinsler, Hans G. Kippenberg, Cheryl A. Kirk-Duggan, Clifton Kirkpatrick, Leonid Kishkovsky, Nadieszda Kizenko, Jeffrey Klaiber, Hans-Josef Klauck, Sidney Knight, Samuel Kobia, Robert Kolb, Karla Ann Koll, Heikki Kotila, Donald Kraybill, Philip D. W. Krey, Yves Krumenacker, Jeffrey Kah-Jin Kuan, Simanga R. Kumalo, Peter Kuzmic, Simon Shui-Man Kwan, Kwok Pui-lan, André LaCocque, Stephen E. Lahey, John Tsz Pang Lai, Emiel Lamberts, Armando Lampe, Craig Lampe, Beverly J. Lanzetta, Eve LaPlante, Lizette Larson-Miller, Ariel Bybee Laughton, Leonard Lawlor, Bentley Layton, Robin A. Leaver, Karen Lebacqz, Archie Chi Chung Lee, Marilyn J. Legge, Hervé LeGrand, D. L. LeMahieu, Raymond Lemieux, Bill J. Leonard, Ellen M. Leonard, Outi Leppä, Jean Lesaulnier, Nantawan Boonprasat Lewis, Henrietta Leyser, Alexei Lidov, Bernard Lightman, Paul Chang-Ha Lim, Carter Lindberg, Mark R. Lindsay, James R. Linville, James C. Livingston, Ann Loades, David Loades, Jean-Claude Loba-Mkole, Lo Lung Kwong, Wati Longchar, Eleazar López, David W. Lotz, Andrew Louth, Robin W. Lovin, William Luis, Frank D. Macchia, Diarmaid N. J. MacCulloch, Kirk R. MacGregor, Marjory A. MacLean, Donald MacLeod, Tomas S. Maddela, Inge Mager, Laurenti Magesa, David G. Maillu, Fortunato Mallimaci, Philip Mamalakis, Kä Mana, Ukachukwu Chris Manus, Herbert Robinson Marbury, Reuel Norman Marigza, Jacqueline Mariña, Antti Marjanen, Luiz C. L. Marques, Madipoane Masenya (ngwan'a Mphahlele), Caleb J. D. Maskell, Steve Mason, Thomas Massaro, Fernando Matamoros Ponce, András Máté-Tóth, Odair Pedroso Mateus, Dinis Matsolo, Fumitaka Matsuoka, John D'Arcy May, Yelena Mazour-Matusevich, Theodore Mbazumutima, John S. McClure, Christian McConnell, Lee Martin McDonald, Gary B. McGee, Thomas McGowan, Alister E. McGrath, Richard J. McGregor, John A. McGuckin, Maud Burnett McInerney, Elsie Anne McKee, Mary B. McKinley, James F. McMillan, Ernan McMullin, Kathleen E. McVey, M. Douglas Meeks, Monica Jyotsna Melanchthon, Ilie Melniciuc-Puica, Everett Mendoza, Raymond A. Mentzer, William W. Menzies, Ina Merdjanova, Franziska Metzger, Constant J. Mews, Marvin Meyer, Carol Meyers, Vasile Mihoc, Gunner Bjerg Mikkelsen, Maria Inêz de Castro Millen, Clyde Lee Miller, Bonnie J. Miller-McLemore, Alexander Mirkovic, Paul Misner, Nozomu Miyahira, R. W. L. Moberly, Gerald Moede, Aloo Osotsi Mojola, Sunanda Mongia, Rebeca Montemayor, James Moore, Roger E. Moore, Craig E. Morrison O.Carm, Jeffry H. Morrison, Keith Morrison, Wilson J. Moses, Tefetso Henry Mothibe, Mokgethi Motlhabi, Fulata Moyo, Henry Mugabe, Jesse Ndwiga Kanyua Mugambi, Peggy Mulambya-Kabonde, Robert Bruce Mullin, Pamela Mullins Reaves, Saskia Murk Jansen, Heleen L. Murre-Van den Berg, Augustine Musopole, Isaac M. T. Mwase, Philomena Mwaura, Cecilia Nahnfeldt, Anne Nasimiyu Wasike, Carmiña Navia Velasco, Thulani Ndlazi, Alexander Negrov, James B. Nelson, David G. Newcombe, Carol Newsom, Helen J. Nicholson, George W. E. Nickelsburg, Tatyana Nikolskaya, Damayanthi M. A. Niles, Bertil Nilsson, Nyambura Njoroge, Fidelis Nkomazana, Mary Beth Norton, Christian Nottmeier, Sonene Nyawo, Anthère Nzabatsinda, Edward T. Oakes, Gerald O'Collins, Daniel O'Connell, David W. Odell-Scott, Mercy Amba Oduyoye, Kathleen O'Grady, Oyeronke Olajubu, Thomas O'Loughlin, Dennis T. Olson, J. Steven O'Malley, Cephas N. Omenyo, Muriel Orevillo-Montenegro, César Augusto Ornellas Ramos, Agbonkhianmeghe E. Orobator, Kenan B. Osborne, Carolyn Osiek, Javier Otaola Montagne, Douglas F. Ottati, Anna May Say Pa, Irina Paert, Jerry G. Pankhurst, Aristotle Papanikolaou, Samuele F. Pardini, Stefano Parenti, Peter Paris, Sung Bae Park, Cristián G. Parker, Raquel Pastor, Joseph Pathrapankal, Daniel Patte, W. Brown Patterson, Clive Pearson, Keith F. Pecklers, Nancy Cardoso Pereira, David Horace Perkins, Pheme Perkins, Edward N. Peters, Rebecca Todd Peters, Bishop Yeznik Petrossian, Raymond Pfister, Peter C. Phan, Isabel Apawo Phiri, William S. F. Pickering, Derrick G. Pitard, William Elvis Plata, Zlatko Plese, John Plummer, James Newton Poling, Ronald Popivchak, Andrew Porter, Ute Possekel, James M. Powell, Enos Das Pradhan, Devadasan Premnath, Jaime Adrían Prieto Valladares, Anne Primavesi, Randall Prior, María Alicia Puente Lutteroth, Eduardo Guzmão Quadros, Albert Rabil, Laurent William Ramambason, Apolonio M. Ranche, Vololona Randriamanantena Andriamitandrina, Lawrence R. Rast, Paul L. Redditt, Adele Reinhartz, Rolf Rendtorff, Pål Repstad, James N. Rhodes, John K. Riches, Joerg Rieger, Sharon H. Ringe, Sandra Rios, Tyler Roberts, David M. Robinson, James M. Robinson, Joanne Maguire Robinson, Richard A. H. Robinson, Roy R. Robson, Jack B. Rogers, Maria Roginska, Sidney Rooy, Rev. Garnett Roper, Maria José Fontelas Rosado-Nunes, Andrew C. Ross, Stefan Rossbach, François Rossier, John D. Roth, John K. Roth, Phillip Rothwell, Richard E. Rubenstein, Rosemary Radford Ruether, Markku Ruotsila, John E. Rybolt, Risto Saarinen, John Saillant, Juan Sanchez, Wagner Lopes Sanchez, Hugo N. Santos, Gerhard Sauter, Gloria L. Schaab, Sandra M. Schneiders, Quentin J. Schultze, Fernando F. Segovia, Turid Karlsen Seim, Carsten Selch Jensen, Alan P. F. Sell, Frank C. Senn, Kent Davis Sensenig, Damían Setton, Bal Krishna Sharma, Carolyn J. Sharp, Thomas Sheehan, N. Gerald Shenk, Christian Sheppard, Charles Sherlock, Tabona Shoko, Walter B. Shurden, Marguerite Shuster, B. Mark Sietsema, Batara Sihombing, Neil Silberman, Clodomiro Siller, Samuel Silva-Gotay, Heikki Silvet, John K. Simmons, Hagith Sivan, James C. Skedros, Abraham Smith, Ashley A. Smith, Ted A. Smith, Daud Soesilo, Pia Søltoft, Choan-Seng (C. S.) Song, Kathryn Spink, Bryan Spinks, Eric O. Springsted, Nicolas Standaert, Brian Stanley, Glen H. Stassen, Karel Steenbrink, Stephen J. Stein, Andrea Sterk, Gregory E. Sterling, Columba Stewart, Jacques Stewart, Robert B. Stewart, Cynthia Stokes Brown, Ken Stone, Anne Stott, Elizabeth Stuart, Monya Stubbs, Marjorie Hewitt Suchocki, David Kwang-sun Suh, Scott W. Sunquist, Keith Suter, Douglas Sweeney, Charles H. Talbert, Shawqi N. Talia, Elsa Tamez, Joseph B. Tamney, Jonathan Y. Tan, Yak-Hwee Tan, Kathryn Tanner, Feiya Tao, Elizabeth S. Tapia, Aquiline Tarimo, Claire Taylor, Mark Lewis Taylor, Bishop Abba Samuel Wolde Tekestebirhan, Eugene TeSelle, M. Thomas Thangaraj, David R. Thomas, Andrew Thornley, Scott Thumma, Marcelo Timotheo da Costa, George E. “Tink” Tinker, Ola Tjørhom, Karen Jo Torjesen, Iain R. Torrance, Fernando Torres-Londoño, Archbishop Demetrios [Trakatellis], Marit Trelstad, Christine Trevett, Phyllis Trible, Johannes Tromp, Paul Turner, Robert G. Tuttle, Archbishop Desmond Tutu, Peter Tyler, Anders Tyrberg, Justin Ukpong, Javier Ulloa, Camillus Umoh, Kristi Upson-Saia, Martina Urban, Monica Uribe, Elochukwu Eugene Uzukwu, Richard Vaggione, Gabriel Vahanian, Paul Valliere, T. J. Van Bavel, Steven Vanderputten, Peter Van der Veer, Huub Van de Sandt, Louis Van Tongeren, Luke A. Veronis, Noel Villalba, Ramón Vinke, Tim Vivian, David Voas, Elena Volkova, Katharina von Kellenbach, Elina Vuola, Timothy Wadkins, Elaine M. Wainwright, Randi Jones Walker, Dewey D. Wallace, Jerry Walls, Michael J. Walsh, Philip Walters, Janet Walton, Jonathan L. Walton, Wang Xiaochao, Patricia A. Ward, David Harrington Watt, Herold D. Weiss, Laurence L. Welborn, Sharon D. Welch, Timothy Wengert, Traci C. West, Merold Westphal, David Wetherell, Barbara Wheeler, Carolinne White, Jean-Paul Wiest, Frans Wijsen, Terry L. Wilder, Felix Wilfred, Rebecca Wilkin, Daniel H. Williams, D. Newell Williams, Michael A. Williams, Vincent L. Wimbush, Gabriele Winkler, Anders Winroth, Lauri Emílio Wirth, James A. Wiseman, Ebba Witt-Brattström, Teofil Wojciechowski, John Wolffe, Kenman L. Wong, Wong Wai Ching, Linda Woodhead, Wendy M. Wright, Rose Wu, Keith E. Yandell, Gale A. Yee, Viktor Yelensky, Yeo Khiok-Khng, Gustav K. K. Yeung, Angela Yiu, Amos Yong, Yong Ting Jin, You Bin, Youhanna Nessim Youssef, Eliana Yunes, Robert Michael Zaller, Valarie H. Ziegler, Barbara Brown Zikmund, Joyce Ann Zimmerman, Aurora Zlotnik, Zhuo Xinping
- Edited by Daniel Patte, Vanderbilt University, Tennessee
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- Book:
- The Cambridge Dictionary of Christianity
- Published online:
- 05 August 2012
- Print publication:
- 20 September 2010, pp xi-xliv
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Nanocomposite Route to Ultra-sensitive Surface Enhanced Raman Scattering Substrates
- Abhijit Biswas, Ilker Bayer, Alexandru S. Biris
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- Journal:
- MRS Online Proceedings Library Archive / Volume 1253 / 2010
- Published online by Cambridge University Press:
- 01 February 2011, 1253-K10-27
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- 2010
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We show a novel route to prepare SERS substrates, which is based on polymer–metal nanocomposites with a specific structure and composition just below the percolation threshold. The neighboring nanoparticles are still quite densely packed, but remain separated by narrow polymer gaps (<1 nm). Such a nanostructure allows the creation of densely packed hot spots where electromagnetic energy can be confined. The polymer–metal nanocomposites are fabricated by a simple and single-step method of electron-beam-assisted vapor-phase co-deposition. The preparation of the SERS substrates is based on a simple plasma-etching process, which removes the polymer structures that allow the formation of metal nanoparticle SERS nano-aggregates with very uniform and controllable inter-particle gaps. The method results in “ideal SERS hot spots” throughout the matrix. These hot spots can be created over very large areas. The prepared SERS substrates are promising candidates for the direct detection (label-free) and analysis of various biological and chemical samples.
Contact angle dynamics in droplets impacting on flat surfaces with different wetting characteristics
- ILKER S. BAYER, CONSTANTINE M. MEGARIDIS
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- Journal:
- Journal of Fluid Mechanics / Volume 558 / 10 July 2006
- Published online by Cambridge University Press:
- 04 July 2006, pp. 415-449
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An experimental study is presented on contact angle dynamics during spreading/recoiling of mm-sized water droplets impacting orthogonally on various surfaces with $\hbox{\it We}\,{=}\,O(0.1)-O(10)$, $Ca\,{=}\,O(0.001)-O(0.01)$, $\hbox{\it Re}\,{=}\,O(100)-O(1000)$, $Oh\,{=}\,O(0.001)$ and $Bo\,{=}\,O(0.1)$. In this impact regime, inertial, viscous and capillary phenomena act in unison to influence contact angle dynamics. The wetting properties of the target surfaces range from wettable to non-wettable. The experiments feature accelerating and decelerating wetting lines, capillary surface waves in the early impact stages, contact angle hysteresis, and droplet rebound under non-wetting conditions. The objective of the work is to provide insight into the dynamic behaviour of the apparent (macroscopic) contact angle $\theta$ and its dependence on contact line velocity $V_{\hbox{\scriptsize{\it CL}}}$ at various degrees of surface wetting. By correlating the temporal behaviours of $\theta$ and $V_{\hbox{\scriptsize{\it CL}}}$, the angle vs. speed relationship is established for each case examined. The results reveal that surface wettability has a critical influence on dynamic contact angle behaviour. The hydrodynamic wetting theory of Cox (J. Fluid Mech. vol. 357, 1998, p. 249) and the molecular-kinetic theory of wetting by Blake & Haynes (J. Colloid Interface Sci.) vol. 30, 1969, p. 421) are implemented to extract values of the corresponding microscopic wetting parameters required to match the experimentally observed $\theta$vs. $V_{\hbox{\scriptsize{\it CL}}}$ data. Application of hydrodynamic theory indicates that in the slow stage of forced spreading the slip length and the microscopic contact angle should be contact line velocity dependent. The hydrodynamic theory performs well during kinematic (fast) spreading, in which solid/liquid interactions are weak. Application of the molecular kinetic theory yields physically reasonable molecular wetting parameters, which, however, vary with impact conditions. The results indicate that even for a single liquid there is no universal expression to relate contact angle with contact line speed. Finally, analysis of the spreading dynamics on the non-wettable surfaces shows that it conforms to the Cassie-Baxter regime (only partial liquid/solid contact is maintained). The present results offer guidance for numerical or analytical studies, which require careful attention to the implementation of boundary conditions at the moving contact line, including the need to specify the dependence of contact angle on contact line speed.
New Approaches to Chemical Bath Deposition of Chalcogenides
- Paul O’brien, Markus R. Heinrich, David J. Otway, Odile Robbe, Alexander Bayer, David S. Boyle
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- Journal:
- MRS Online Proceedings Library Archive / Volume 606 / 1999
- Published online by Cambridge University Press:
- 10 February 2011, 199
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- 1999
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We have been studying new approaches to conventional Chemical Bath Deposition (CBD) of chalcogenide containing materials, using continuous circulation and replenishment of CBD solution over a heated substrate. Crystalline thin films produced by this method offer potential for use in solar cell devices or other optoelectronic applications. Films of CdS, ZnS and the ternary material CdxZn1−xS have been deposited on TO-glass substrates. In this paper we demonstrate our approach for the deposition of CdS films. These have been characterized by XPS, SEM, XRD and UV/vis spectroscopy and shown to be good quality. The films have been used to fabricate Au/CdTe/CdS/TO-glass solar cells of efficiency 10.1% under AMl.5 illumination.
5 - Monetary perspective on underground economic activity in the United States
- Edited by Edgar L. Feige, University of Wisconsin, Madison
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- Book:
- The Underground Economies
- Published online:
- 20 October 2009
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- 27 January 1989, pp 129-158
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Summary
There are widespread reports of a growing underground, or unobserved, economy in the United States and in other countries. The unobserved economy seems to develop principally from efforts to evade taxes and government regulation. Although no single definition of such activity has been universally accepted, the term generally refers to activity – whether legal or illegal – generating income that either is underreported or not reported at all (see Chapter 1 in this volume). Some authors narrow the definition to cover income produced in legal activity that is not set down in the recorded national income statistics.
Recent discussion of underground economic activity was stimulated by publication of two estimates, one by Gutmann (1977) and the other by Feige (1979), of the size of the underground economy in the United States; these estimates were derived from aggregate monetary statistics. In the ensuing years, numerous other estimates have been made of the underground economy in the United States and in other countries. The magnitude of some of these estimates has prompted congressional hearings and various government studies. In 1979, the Internal Revenue Service (IRS, 1979) estimated that, for 1976, individuals failed to report between $75 billion and $100 billion in income from legal sources and another $25 billion to $35 billion from three types of illegal activity – drugs, gambling, and prostitution. In a more recent study, the IRS estimated that unreported income from legal sources rose from $93.9 billion in 1973 to $249.7 billion in 1981 whereas unreported income from these same three illegal activities rose from $9.3 billion to $34 billion (IRS, 1983).
From the Understanding of the Reaction Mechanism Towards Optimizing the Deposition Rate and Optoelectronic Properties of a-Si:H
- S. Veprek, M. Heintze, R. Bayer, N. Jurčik-Rajman
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- Journal:
- MRS Online Proceedings Library Archive / Volume 149 / 1989
- Published online by Cambridge University Press:
- 25 February 2011, 3
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- 1989
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We present new results of kinetic studies of the deposition of high quality a-Si:H which strongly support the reaction mechanism suggested in our earlier papers: 1. SiH4 → SiH2; 2. SiH2 + SiS4 → Si2H6 (SiH2 + Si2H6 → Si3H6); 3. Si2H6 → 2a-Si:H (Si3H8 → 3a-Si:H). The “SiH3 mechanism”, as promoted by several workers, is in contradiction with these experimental facts.
The di- and trisilane, which have a much higher reactive sticking coefficient than monosilane, play the role of reactive intermediates which facilitate the heterogeneous decomposition of silicon carrying species at the surface of the growing film. The values of the reactive sticking coefficient of Si2H6 and Si3H8 depend on the surface coverage by chemisorbed hydrogen; they increase with decreasing surface coverage. Under the conditions of the growth of high quality a-Si:H films the reactive sticking coefficient of disilane amounts to 10−4 to 10−2 which is in a good agreement with recent data of other authors.
The rate determining step of the growth of high quality a-Si:H films is the desorption of hydrogen from the surface of the growing film. This can be strongly enhanced by ion bombardment at impact energy of <100 eV. In this way, homogeneous, good quality films were deposited at rates up to 1800 Angströms/min, and there is a well justified hope that this rate can be further increased.
Absorption and Distribution of Diuron–C14
- D. E. Bayer, S. Yamaguchi
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Diuron, 3-(3,4-dichlorophenyl)-1,1-dimethylurea-C14, moved primarily in the apoplast with the transpiration stream, and did not move with the plant assimilates of red kidney bean, soybean, and barley plants. There did not appear to be a species difference in absorption, distribution, and accumulation. Uptake and distribution increased progressively as duration of treatments increased from 6 hours to 16 days. No phloem movement and distribution was observed in the 16-day treatment time. The addition of a surfactant did not alter the translocation pattern of diuron.
The evidence obtained from gross autoradiographs did not eliminate the possibility that very small amounts of diuron may get into the symplast. However, it did indicate that if diuron moved into the symplast, it was restricted and the movement of diuron out of the area of application by phloem was very limited.