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Articles 3181 - 3210 of 5147
Full-Text Articles in Entire DC Network
Scattering From A Tenuous Random Medium With Applications In Optics, Jonathan Blackledge
Scattering From A Tenuous Random Medium With Applications In Optics, Jonathan Blackledge
Articles
Mathematical models for the scattering of light (and other radiation) tend to fall into two categories based on a weak field condition (single scattering processes) or a strong field condition (multiple scattering processes). In the latter case, the complexity of deterministic models coupled with available solutions often fail to provide results that are of value to engineering systems (e.g. imaging systems). For this reason, multiple scattering problems are often approached using stochastic modelling methods whose foundations lie in random walk theory where the amplitude and phase of the scattered field are taken to conform to an appropriate statistical process and …
First Approaches To Standard Protocols And Reference Materials For The Assessment Of Potential Hazards Associated With Nanomaterialss, Gordon Chambers, Hugh Byrne, Iseult Lynch, Micheal Riediker, Hans Bouwmeester, Hans Marvin, Alan Casey, Markus Berges, Martin Clift, Teresa Fernandez, Lise Fjellsbo, Lucienne Juillerat, Gert Roebben, Christoph, Klein, Qinglan Wu, Vince Hackley, Jean-Pierre Kaiser, Wolfganag Kreyling, Michael Garner, Peter Hatto,, Kenneth Dawson
First Approaches To Standard Protocols And Reference Materials For The Assessment Of Potential Hazards Associated With Nanomaterialss, Gordon Chambers, Hugh Byrne, Iseult Lynch, Micheal Riediker, Hans Bouwmeester, Hans Marvin, Alan Casey, Markus Berges, Martin Clift, Teresa Fernandez, Lise Fjellsbo, Lucienne Juillerat, Gert Roebben, Christoph, Klein, Qinglan Wu, Vince Hackley, Jean-Pierre Kaiser, Wolfganag Kreyling, Michael Garner, Peter Hatto,, Kenneth Dawson
Articles
All new technologies have an inherent risk, which is typically assessed alongside the development of applications of the technology. This is also the case for nanotechnology: a key concern in the case of engineered nanomaterials (ENMs) is that due to their very small size, NMs can reach areas such as the cell that are inaccessible to other materials, such as implants and drugs. As a result of their large surface area, NMs may be more reactive than other larger materials. The large physical and chemical variability of NMs, and the fact that small changes can have large consequences, mean that …
Optical Properties Of Silica-Mfi Doped Acrylamide-Based Photopolymer, Tzvetanka Babeva, Rosen Todorov, Svetlana Mintova, Temenujka Yovcheva, Izabela Naydenova, Vincent Toal
Optical Properties Of Silica-Mfi Doped Acrylamide-Based Photopolymer, Tzvetanka Babeva, Rosen Todorov, Svetlana Mintova, Temenujka Yovcheva, Izabela Naydenova, Vincent Toal
Articles
The optical properties of acrylamide-based photopolymer doped with pure silica MFI-type zeolites are studied by refractometric and spectrophotometric means. Dynamic Light Scattering and Transmission Electron Microscopy are used for zeolite characterization and laser refractometry and White Light Interferometric profilometry are used for surface characterization of the composites. Refractive indices and absorption coefficients of composites are determined from their transmittance and reflectance spectra. The calculated dispersion curves are further used for deriving the zeolites refractive index and porosity and the latter compared to the values of total pore volume obtained from N2-sorption measurements. The impact of the doping level on the …
Second-Hand Smoke Exposure In Cars And Respiratory Health Effects In Children, Patrick J. Goodman, Z. Kabir, Luke Clancy, P.J. Manning, J. Holohan, S. Keogan
Second-Hand Smoke Exposure In Cars And Respiratory Health Effects In Children, Patrick J. Goodman, Z. Kabir, Luke Clancy, P.J. Manning, J. Holohan, S. Keogan
Articles
We examined potential associations of ever asthma, and symptoms of wheeze (past 12 months), hay fever, eczema and bronchitis (cough with phlegm) among school children exposed to second-hand smoke (SHS) in cars, using a modified Irish International Study of Asthma and Allergies in Childhood (ISAAC) protocol. 2,809 children of 13–14 yrs old and who selected randomly from post-primary schools throughout Ireland completed the 2007 ISAAC self-administered questionnaire. Adjusted OR (adjusted for sex, active smoking status of children interviewed and their SHS exposure at home) were estimated for the associations studied, using multivariable logistic regression techniques. Overall, 14.8% (13.9% in young …
Antenna Optimization With A Computationally Efficient Multiobjective Evolutionary Algorithm, Matthias John, Max Ammann
Antenna Optimization With A Computationally Efficient Multiobjective Evolutionary Algorithm, Matthias John, Max Ammann
Articles
An efficient multiobjective evolutionary algorithm is described for optimizing a novel spline based printed monopole antenna. The antenna geometry is based on spline outlines. Both radiating element and groundplane are simultaneously optimized by the algorithm. The resulting antenna performance is evaluated. It is shown that the evolutionary algorithm and the spline geometry can be used to efficiently generate ultrawideband antennas on limited computing resources.
Holographic Recording In Acrylamide Photopolymers: Thickness Limitations, Mohammad Mahmud, Izabela Naydenova, Nitesh Pandey, Tzvetanka Babeva, Raghavendra Jallapuram, Suzanne Martin, Vincent Toal
Holographic Recording In Acrylamide Photopolymers: Thickness Limitations, Mohammad Mahmud, Izabela Naydenova, Nitesh Pandey, Tzvetanka Babeva, Raghavendra Jallapuram, Suzanne Martin, Vincent Toal
Articles
Holographic recording in thick photopolymer layers is important for application in holographic data storage, volume holographic filters and correlators. Here, the characteristics of acrylamidebased photopolymer layers having thickness from 250 μm to 1-mm were studied. For each layer thickness samples with three different values of absorbance were studied. By measuring both the first order diffraction efficiency growth of holographically recorded gratings and studying the diffraction patterns obtained, the influence of scattering on the diffraction efficiency of thick volume holographic gratings was analyzed. It was observed that above a particular thickness and absorbance, the first order diffraction efficiency significantly decreased because …
Supreme Seafoods, Thomas Cooney
Preparation, Characterization Of Nipam And Nipam/Bam Copolymer Nanoparticles And Their Acute Toxicity Testing Using An Aquatic Test Battery, Pratap Naha, Alan Casey, Tiziana Tenuta, Iseult Lynch, Kenneth Dawson, Hugh Byrne, Maria Davoren
Preparation, Characterization Of Nipam And Nipam/Bam Copolymer Nanoparticles And Their Acute Toxicity Testing Using An Aquatic Test Battery, Pratap Naha, Alan Casey, Tiziana Tenuta, Iseult Lynch, Kenneth Dawson, Hugh Byrne, Maria Davoren
Articles
Poly N-isopropylacrylamide and N-isopropylacrylamide / N-tert-butylacrylamide copolymer nanoparticles of 50 to 70 nm were prepared by free radical polymerisation. The particle sizes of the copolymer nanoparticles were measured in the test media MilliQ water, Algae Media, Daphnia Media and Microtox Diluent as a function of temperature. Whereas in MilliQ water the particle size was seen to decrease above the lower critical solution temperature of the thermoresponsive polymer, in the test media it was seen to increase significantly, indicative of aggregation. At the temperatures employed for the ecotoxicological studies all particles, with the exception of the 50:50copolymer existed as nanoparticles, however. …
A Test Battery Approach To The Ecotoxicological Evaluation Of Cadmium And Copper Employing A Battery Of Marine Bioassays, Ailbhe Macken, Michelle Giltrap, Kim Ryall, Barry Foley, Evin Mcgovern, Brendan Mchugh, Maria Davoren
A Test Battery Approach To The Ecotoxicological Evaluation Of Cadmium And Copper Employing A Battery Of Marine Bioassays, Ailbhe Macken, Michelle Giltrap, Kim Ryall, Barry Foley, Evin Mcgovern, Brendan Mchugh, Maria Davoren
Articles
The main aim of this study was to investigate the sensitivity of the battery to two recognised metal pollutants of the marine environment and rank species sensitivity accordingly.
Inactivation Of Escherichia Coli In Orange Juice Using Ozone, Sonal Patil, Paula Bourke, Jesus Maria Frias, Brijesh Tiwari, Patrick J. Cullen
Inactivation Of Escherichia Coli In Orange Juice Using Ozone, Sonal Patil, Paula Bourke, Jesus Maria Frias, Brijesh Tiwari, Patrick J. Cullen
Articles
This research investigated the efficacy of gaseous ozone for the inactivation of Escherichia coli ATCC 25922 and NCTC 12900 strains in orange juice. Orange juice inoculated with E. coli (106 CFU mL-1) as a challenge microorganism was treated with ozone at 75-78µg mL-1 for different time periods (0-18 min). The efficacy of ozone for inactivation of both strains of E. coli was evaluated as a function of different juice types: model orange juice, fresh unfiltered juice, juice without pulp, and juice filtered through 500mm or 1mm sieves. Fast inactivation rates for total reduction of E. coli …
Silver Doped Perfluoropolyether-Urethane Coatings: Antibacterial Activity And Surface Analysis, Niall Stobie, Brendan Duffy, Steven Hinder, Patrick Mchale, Declan Mccormack
Silver Doped Perfluoropolyether-Urethane Coatings: Antibacterial Activity And Surface Analysis, Niall Stobie, Brendan Duffy, Steven Hinder, Patrick Mchale, Declan Mccormack
Articles
The colonisation of clinical and industrial surfaces with pathogenic microorganisms has prompted increased research into the development of effective antibacterial and antifouling coatings. There is evidence that implanted biomedical surfaces coated with metallic silver can be inactivated by hysiological fluids, thus reducing the bioactivity of the coating. In this work, we report the biofilm inhibition of Staphylococcus epidermidis using a roomtemperatureprocessedsilver dopedperfluoropolyether-urethane coating. The release of silver ions from these fluoropolymers over a six-day period inhibited bacterial encrustation – as observed by scanning electron microscopy (SEM). X-ray photoelectron spectroscopy (XPS) analysis indicated differences in carbon, fluorine and sodium surface composition …
Dab Eureka-147: The European Platform For Digital Radio, Brian O'Neill
Dab Eureka-147: The European Platform For Digital Radio, Brian O'Neill
Articles
Like its analogue counterpart, digital radio is one of the 'older' forms of new media. The technology of digital radio broadcasting has been under active development for at least 25 years and has produced a number of different technical solutions, the longest established of which is Eureka-147 or Digital Audio Broadcasting (DAB). This article explores DAB's distinctly European vision for the future of broadcasting. DAB is traced to its origins in 1980s European research and development policy and its affinity with traditions of European public service broadcasting. Ironically, it was DAB's failure to capitalize on its 'Europeanness' that contributed to …
Gender Differences In Children’S Internet Use:Key Findings From Europe, Helen Mcquillan, Brian O'Neill
Gender Differences In Children’S Internet Use:Key Findings From Europe, Helen Mcquillan, Brian O'Neill
Articles
This paper analyses comparative empirical data from across Europe on gender differences in children’s internet use, and through a new interpretive framework on young people’s experiences, seeks to add new findings to this growing international knowledge base. Linking feminist theory on gender and technology with theories of youth gender identity construction, four key areas are investigated. Firstly, the impact of increased internet access and use in schools and in homes on gender equality is examined. Secondly, youth communication and content creation practices are investigated to explore whether the internet is facilitating flexibility in gender identity and the transcendence of traditional …
Focusing On Process And History: Path Dependence, Paul Donnelly
Focusing On Process And History: Path Dependence, Paul Donnelly
Articles
In recognition of the calls for more processual and historically informed organizational theorizing, this chapter considers the notion of path dependency, an approach which holds that a historical path of choices has the character of a branching process with a self-reinforcing dynamic such that preceding steps in a particular direction induce further movement in the same direction, thereby making the possibility of switching to some other previously credible alternative more difficult. Path dependence seeks to assess how process, sequence and temporality can be best incorporated into explanation, the focus of the researcher being on particular outcomes, temporal sequencing and the …
Rethinking The Constitutional Criminal Procedure Of Juvenile Transfer Hearings: Apprendi, Adult Punishment, And Adult Process, Jenny E. Carroll
Rethinking The Constitutional Criminal Procedure Of Juvenile Transfer Hearings: Apprendi, Adult Punishment, And Adult Process, Jenny E. Carroll
Articles
No abstract provided.
Four Observations About Hate Speech Articles & Essays, Richard Delgado, Jean Stefancic
Four Observations About Hate Speech Articles & Essays, Richard Delgado, Jean Stefancic
Articles
No abstract provided.
Churches As First Amendment Institutions: Of Sovereignty And Spheres, Paul Horwitz
Churches As First Amendment Institutions: Of Sovereignty And Spheres, Paul Horwitz
Articles
This Article offers a novel way of approaching the role of churches and other religious institutions within the First Amendment framework Beyond that it offers a broader organizing structure for the legal treatment of First Amendment institutions entities whose fundamental role in shaping and contributing to public discourse entitles them to substantial autonomy to organize and regulate themselves without state interference Drawing on the work of the neoCalvinist writer Abraham Kuyper it encourages us to think about churches and other First Amendment entities as sovereign spheres nonstate institutions whose authority is ultimately coequal to that of the state In the …
A Man For All Seasons: Judge Frank M. Johnson Jr. And The Quest To Secure The Rule Of Law Essay: John S. Stone Chair Inaugural Lecture, Ronald J. Krotoszynski Jr.
A Man For All Seasons: Judge Frank M. Johnson Jr. And The Quest To Secure The Rule Of Law Essay: John S. Stone Chair Inaugural Lecture, Ronald J. Krotoszynski Jr.
Articles
No abstract provided.
Quick Off The Mark? In Favor Of Empowering The President-Elect, Nina A. Mendelson
Quick Off The Mark? In Favor Of Empowering The President-Elect, Nina A. Mendelson
Articles
The United States’s presidential transition period is too long. Between November 7, 2008, and January 20, 2009, the media quickly identified a “‘leadership vacuum.’” In contrast to those of President-elect Obama, President Bush’s approval ratings were at historic lows. One reporter commented in late November, “The markets, at least, seem to be listening to one [P]resident—and he’s not the one in the Oval Office,” and another noted that “everyone . . . ignores the actions of the lame duck.”
London As Delaware?, Adam C. Pritchard
London As Delaware?, Adam C. Pritchard
Articles
Jurisdictional competition in corporate law has long been a staple of academic-and sometimes, political-debate in the United States. State corporate law, by long-standing tradition in the United States, determines most questions of internal corporate governance-the role of boards of directors, the allocation of authority between directors, managers and shareholders, etc.-while federal law governs questions of disclosure to shareholders-annual reports, proxy statements, and periodic filings. Despite substantial incursions by Congress, most recently in the Sarbanes-Oxley Act of 2002, this dividing line between state and federal law persists, so state law arguably has the most immediate impact on corporate governance outcomes.
Limits Of Interpretivism, Richard A. Primus
Limits Of Interpretivism, Richard A. Primus
Articles
Justice Stephen Markman sits on the Supreme Court of my home state of Michigan. In that capacity, he says, he is involved in a struggle between two kinds of judging. On one side are judges like him. They follow the rules. On the other side are unconstrained judges who decide cases on the basis of what they think the law ought to be. This picture is relatively simple, and Justice Markman apparently approves of its simplicity. But matters may in fact be a good deal more complex.
The Mostly Unintended Effects Of Mandatory Penalties: Two Centuries Of Consistent Findings, Michael Tonry
The Mostly Unintended Effects Of Mandatory Penalties: Two Centuries Of Consistent Findings, Michael Tonry
Articles
No abstract provided.
A Missed Opportunity: Minnesota's Failed Experiment With Choice-Based Integration, Margaret Hobday, Geneva Finn, Myron Orfield
A Missed Opportunity: Minnesota's Failed Experiment With Choice-Based Integration, Margaret Hobday, Geneva Finn, Myron Orfield
Articles
No abstract provided.
Carbon Capture And Sequestration: Identifying And Managing Risks, Alexandra B. Klass, Elizabeth J. Wilson
Carbon Capture And Sequestration: Identifying And Managing Risks, Alexandra B. Klass, Elizabeth J. Wilson
Articles
Carbon capture and geologic sequestration (CCS) technology promises to provide deep emissions cuts, particularly from coal power generation, but deploying CCS creates risks of its own. This article first considers the risks associated with CCS, which involves capturing CO{sub 2} emissions from industrial sources and power plants, transporting the CO{sub 2} by pipeline, and injecting it underground for permanent sequestration. The article then suggests ways in which these risks can be minimized and managed and considers more broadly when or if CCS should be deployed or whether its use should be limited or rejected in favor of other solutions.
Staying Alive: Public Interest Law In Contemporary Latin America, Stephen Meili
Staying Alive: Public Interest Law In Contemporary Latin America, Stephen Meili
Articles
This paper explores the current state of public interest lawyering in three Latin American countries: Argentina, Brazil and Chile. Based on a series of open-ended interviews with lawyers, judges and social movement activists, it compares public interest lawyering in these countries now with how it was practiced when the author interviewed some of the same individuals in the early to mid 1990s. Its analysis is set within the context of important geopolitical and socio-legal phenomena: the current global economic crisis and the judicialization of politics and constitutionalization of rights that has swept across the region over the past two decades. …
Child Protection -- What Ought To Be, Donald N. Duquette
Child Protection -- What Ought To Be, Donald N. Duquette
Articles
America's child protection system should not only protect our children, it should protect our liberty. Several recent cases, and perhaps others in your jurisdiction, highlight a general tension in America's child protection system between child protection and family integrity.
The Suspension Theory: Hurricane Katrina Looting, Property Rights, And Personhood Comment, Casey E. Faucon
The Suspension Theory: Hurricane Katrina Looting, Property Rights, And Personhood Comment, Casey E. Faucon
Articles
No abstract provided.
Gaap Did Their Job During The Economic Meltdown, George Mundstock
Gaap Did Their Job During The Economic Meltdown, George Mundstock
Articles
No abstract provided.
Toward A Broadband Public Interest Standard, Anthony E. Varona
Toward A Broadband Public Interest Standard, Anthony E. Varona
Articles
No abstract provided.
Invisible Borders: Mapping Out Virtual Law, Kathleen Claussen
Invisible Borders: Mapping Out Virtual Law, Kathleen Claussen
Articles
No abstract provided.