68,844,168 results
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2. ZnO and TiO2nanostructures for surface-enhanced Raman scattering-based bio-sensing: A review
- Author
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Adesoye, Samuel and Dellinger, Kristen
- Abstract
Applications of Raman spectroscopy in bio-sensing and bio-detection were previously limited due to its low sensitivity resulting from weak Raman scattering. Over time, improvements in instrumentation and the discovery of surface-enhanced Raman scattering (SERS) have increased sensitivity and specificity for target analytes, making Raman spectroscopy a technique of choice for many applications, ranging from biomedical to environmental sensing. However, despite significant progress in the field, novel SERS substrates are still being synthesized and tested by researchers to achieve lower detection limits and increase the reproducibility of this technique. Accordingly, substrate materials have developed from traditional plasmonic materials, which provide primarily electromagnetic enhancements, to semiconductor materials that primarily rely on the chemical enhancement mechanism. A diverse body of research has equally explored combining these materials in a hybrid manner with variable results. Notable semiconductor materials include metal oxides ZnO and TiO2, which exhibit high flexibility and integration into SERS sensing designs to potentially enhance sensitivity and modify biocompatibility. In light of these recent developments, this review summarizes recent approaches to synthesize ZnO and TiO2SERS nanostructures and examines recent biological applications of these substrates. Over 60 papers were consulted to develop an overview of current synthesis approaches to integrating ZnO and TiO2into SERS substrates. A summary of various bio-detection applications and potential advancements in the field are presented.
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- 2202
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3. Different or alike? Comparing computer-based and paper-based card sorting
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Goetz, Greve, primary
- Published
- 2114
- Full Text
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4. The Highlights Book of Things to Do : Discover, Explore, Create, and Do Great Things
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Highlights and Highlights
- Abstract
The Highlights Book of Things to Do is the essential book of pure creativity and inspiration. Kids ages seven and up will find hundreds of ways to build, play, experiment, craft, cook, dream, think, and become outstanding citizens of the world.This highly visual, hands-on activity book shows kids some of the best ways to do great things--from practicing the lost arts of knot-tying, building campfires, connecting circuits, playing jump rope, drawing maps, and writing letters, to learning how to empower themselves socially, emotionally, and in their communities. The final chapter, Do Great Things, inspires kids become caring individuals, confident problem solvers, and thoughtful people who can change the world.Full List of Chapters:Things to Do InsideThings to Do OutsideScience Experiments to DoThings to BuildThings to Do with Your BrainThings to Do in the KitchenThings to DrawThings to WriteThings to Do with ColorThings to Do with PaperMore Things to Do with Recycled MaterialsDo Great ThingsNational Parenting Seal of ApprovalWinner, National Parenting Product Award (NAPPA)Winner, Mom's Choice Award, Gold
- Published
- 2079
5. The Ultimate Unofficial Guide to Tolkien's World
- Author
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Antony Cummins and Antony Cummins
- Abstract
Tolkien's Middle Earth continues to capture the global imagination. In this accessible (but unofficial) guide, this sometimes confusing world is broken down into bite-sized sections that bring it to life for the newcomer and the fanatic alike.Become an expert in Tolkien's world – the easy way! The Ultimate Unofficial Guide to Tolkien's World offers something that's never been attempted before: a single timeline, in chronological order, of all the events in Tolkien's notorious complex books.Why was it so shocking that Galadriel gave three strands of her golden hair to Gimli the Dwarf? Why is Sauron afraid of Aragorn's sword? Why does a Balrog lurk under a dwarven underground city and how did the seven lost Seeing Stones come into being? How did the hobbits manage to have such a peaceful life? Who were the warriors whose corpse lights hover in the Dead Marshes?From handy lists of characters, places, weapons and types of magic to the 150 illustrations capturing overlooked details such as armour colours, heraldic signs and crests, this easy-to-follow guide to Middle Earth will ensure you're never baffled by alternate character names, confusing mythologies or labyrinthine plots again.
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- 2079
6. The Book of Animal Secrets : Nature's Lessons for a Long and Happy Life
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David B. Agus and David B. Agus
- Abstract
From the #1 New York Times bestselling author of The End of Illness comes an ingenious guide to what our fellow animals can teach us about living longer, healthier, happier lives.Mother nature has a lot to teach us, if only we open our eyes. Pigeons and dolphins offer creative strategies for preserving our memories and warding off dementia, while squirrels and pigs harbor secrets for managing chronic pain. Rhinoceroses demonstrate the subtle power of our environments—and how to exercise better—while chimps have surprising parenting tips, not to mention great diet advice. Studying elephants has unlocked insights into preventing cancer, and we can look to giraffes for solutions to cardiovascular issues. Ants reveal the unusual benefits of collaboration and altruism, dogs are masterful mentors in living the good life, prairie voles hold clues to connection, and hitchhikers from our evolutionary past may bring us to the edge of immortality. In The Book of Animal Secrets, visionary physician and biomedical researcher David B. Agus, MD, explores all these ways—and more—that we can harness the wonders of the animal kingdom in our own, very human lives. Filled with lively storytelling and astonishing practical takeaways, this revelatory guide will have you rethinking what's possible for your health and wellbeing—now and for years to come.
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- 2050
7. Double Overtime : The Hockey Fan's Ultimate Hockey Book
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Stephen Cole and Stephen Cole
- Abstract
A Simon & Schuster eBook. Simon & Schuster has a great book for every reader.
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- 2050
8. Title Pending 1839
- Published
- 2034
- Full Text
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9. Can selling make you more resilient? Experimental evidence from India
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Steenkamp, Iris
- Subjects
Selling ,Performance ,India ,Recession ,Theses - Abstract
Can business play a role in building resilience among vulnerable communities? Can (marketing) employment contribute to resilience – and if so, how? These are increasingly important and relevant questions in our current world as the recent COVID-19 pandemic showed many households to be just one shock away from falling into poverty. Consequently, understanding how resilience, the ability to cope both psychologically and economically with adversity, can be built has become a top priority for many policymakers and practitioners. This paper explores a marketing solution to building resilience. In this paper, we seek to answer the following question: “Can sales employment help people build resilience and enable them to cope with adversity?” We offer a mechanism through which sales improves resilience: by facilitating opportunities to connect. We show that by enabling opportunities to connect with a wide set of individuals, sales employment can build resilience. We differentiate between types of connections and show that different connections can lead to different forms of resilience. We present experimental evidence from a randomized controlled trial involving saleswomen in rural India. With our partner organization, we recruited, trained, and randomly assigned 1,048 women to either treatment, placebo, or control condition. We exogenously assign individuals to an employment position that facilitates opportunities to connect and measure the impact on resilience. In doing so, not only do we vary opportunities to connections, but we also provide a plausible mechanism of why they have more connections than others: certain jobs – in our case sales employment. To the best of our knowledge, there is no empirical evidence showing the impact of (changing) connections on resilience when facing adversity. In doing so, we are the first to randomly assign participants to different employment forms and causally estimate the impact of employment on personal outcomes, such as resilience. Our results show that those engaged in sales employment are more resilient than those in placebo employment or no-employment conditions. In fact, we find that sales employment significantly improves one’s ability to be economically resilient when facing adversity by increasing: i) the likelihood of being aware of external sources of help and ii) the ability to take-up external sources of help. Second, our results show that engagement in sales is associated with having a wider set of connections. This effect is largely driven by increased connections with local government representatives and local community leaders. We find a strong association between the width of connections and economic and psychological resilience. Last, we examine heterogeneous effects and find that those from lower caste benefit most from engaging in sales employment in terms of building resilience compared. To the best of our knowledge, no one has looked at the impact of employment on resilience – we show that marketing employment holds the power to improve resilience when facing adversity.
- Published
- 2033
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10. Essays in Macroeconomics
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Andreolli, Michele
- Subjects
Crises ,European Union ,International monetary agreements ,Economic planning ,Theses ,Debt financing - Abstract
This thesis is a contribution to macroeconomics and macro-finance research. It focuses on two areas, the interactions between debt markets and the macroeconomy, in the first two chapters, and consumption heterogeneity’s role in the transmission of shocks, in the third. The first chapter is my job market paper, “Monetary Policy and the Maturity Structure of Public Debt”. It studies the mediating impact of the maturity structure of public debt in the transmission of monetary policy shocks to economic activity. A longer debt maturity attenuates greatly the effect of monetary policy: going from the average historical duration of US debt to very short term debt doubles the impact of a rise of the policy rate on output. A similar result holds in UK data. There is no differential effect on inflation. I show that these effects can be traced back to a quantitatively important financing channel. A model featuring an interaction between an empirically estimated primary market friction and a standard financial accelerator is able to account for these facts. The second chapter of the thesis is “The Fiscal Consequences of Missing an Inflation Target”. This is a joint work with Helene Rey. We show, in Euro Area countries and in the US, the effect of the reliability of central banks’ monetary policy on public finances. When a credible central bank misses its inflation target, this has large fiscal consequences for the fiscal authority. These misses are quantitative sizable in the past low inflation decade, especially for countries with a high level and a high maturity of public debt. We link our results to the optimum currency area literature as the monetary-fiscal nexus is key to the functioning of the Euro Area: the ECB sets monetary policy for sovereigns with heterogeneous debt profiles. The third chapter of my thesis, “LESS is MORE: Consumer Spending and the Size of Economic Stimulus Payments”, is a joint work with Paolo Surico. We study the consumption response to unexpected transitory income gains of different size, using hypothetical survey questions. Affluent households exhibit a higher Marginal Propensity to Consume (MPC) out of large gains while families with low cash-on-hand display a higher MPC out of small gains. The spending of higher earners is consistent with the predictions of a model with non-homothetic preferences on consumption, while spending of low-income families can be accounted for by borrowing constraints. Our results suggest that, for a given level of public spending, a fiscal transfer of smaller size paid to a larger group of low-income households stimulates aggregate consumption more than a larger transfer paid to a smaller group.
- Published
- 2033
- Full Text
- View/download PDF
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