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Dynamic response and wake structures of cantilevers with square cross-section

The dynamic response of cantilevers to a hydrodynamic load has been studied numerically. The Reynolds number of the flow was fixed at 5000 and the variation in re-duced velocity was achieved by varying the Young’s modulus of the cantilever. Cantilevers with aspectratios of 5 and 10 were considered for reduced velocities in the range 2 to 30. The simulations were performed using a strongly coupled

Effects of a vortex generator pair on jet impingement heat transfer in cross-flow

Jet impingement cooling is commonly used in gas turbines. Usually the spent air from the upstream jets forms a cross-flow past the downstream jets, which degrades their heat transfer performance. In the present study, a new method was proposed to promote the jet penetration and enhance the impingement heat transfer. By placing a delta-winglet vortex generator pair (VGP) in the cross-flow upstream

“Diam!” (Be quiet!) : Noisy Sound Art from the Global South

The sound art scene is not limited to the northern hemisphere. Rather, it is globally distributed and has for decades also appeared in various manifestations and constellations in the Global South. Globalization, postcolonialism, and decolonization are therefore issues that are just as crucial to the field of sound art as they are for other fields of social and human science. These issues are slow

Nonlinear Dynamic Output Feedback Stabilization of Moore-Greitzer Models with Quadratic Constraints

Here, we propose a new procedure for output feedback design for systems with nonlinearities satisfying quadratic constraints. It provides an alternative for the classical observer-based design and relies on transformation of the closed-loop system with a dynamic controller of particular structure into a special block form. Asymptotic stability is shown using Lyapunov theory with strictly positive

Policy-making for the diffusion of social innovations : the case of the Barnahus model in the Nordic region and the broader European context

The Barnahus model was launched in Iceland in 1998, and it subsequently spread to all the Nordic countries. It is an interagency, co-located model for working with cases of violence and abuse against children that addresses two vital concerns of welfare societies: to process cases through the legal system and to offer support and treatment to victims. The model is currently recommended as a best-p

Sexual conflict and intrasexual polymorphism promote assortative mating and halt population differentiation

Sexual conflict is thought to be an important evolutionary force in driving phenotypic diversification, population divergence, and speciation. However, empirical evidence is inconsistent with the generality that sexual conflict enhances population divergence. Here, we demonstrate an alternative evolutionary outcome in which sexual conflict plays a conservative role in maintaining male and female p

Association between Year of Birth and 1-Year Survival among Extremely Preterm Infants in Sweden during 2004-2007 and 2014-2016

Importance: Since 2004-2007, national guidelines and recommendations have been developed for the management of extremely preterm births in Sweden. If and how more uniform management has affected infant survival is unknown. Objective: To compare survival of extremely preterm infants born during 2004-2007 with survival of infants born during 2014-2016. Design, Setting and Participants: All births at

Quality of life of prosthetic and orthotic users in South India : A cross-sectional study

Background: The aim of this study was to compare QOL among people in India using lower-limb prostheses or orthoses with people without disability. A further aim was to compare subgroups and investigate whether QOL was associated with physical disability, gender, income, living area, and education. Methods: A cross-sectional questionnaire study in which the World Health Organization Quality of Life

Separation and Recycling of Functional Nanoparticles Using Reversible Boronate Ester and Boroxine Bonds

The sustainable and green chemistry concept calls for effective separation and recycling of valuable functional nanoparticles. In this work, a viable approach to separate and recover synthetic nanoparticles without involving heavy-duty instruments was established. The nanoparticle separation was enabled by using reversible boronate ester and boroxine bonds formed between boronic acid-functionalize

Lower HDL-cholesterol, a known marker of cardiovascular risk, was associated with depression in type 1 diabetes : A cross sectional study

Background: Depression, metabolic disturbances and inflammation have been linked to cardiovascular disease and mortality. Low levels of high-density lipoprotein cholesterol (HDL-cholesterol), a known marker of cardiovascular risk, have been observed in patients with major depression in psychiatric populations. Our main aim was to explore associations between depression, antidepressants, and metab

Certifying Nonclassical Behavior for Negative Keldysh Quasiprobabilities

We introduce an experimental test for ruling out classical explanations for the statistics obtained when measuring arbitrary observables at arbitrary times using individual detectors. This test requires some trust in the measurements, represented by a few natural assumptions on the detectors. In quantum theory, the considered scenarios are well captured by von Neumann measurements. These can be de

Extreme reductions of entropy in an electronic double dot

We experimentally study negative fluctuations of stochastic entropy production in an electronic double dot operating in nonequilibrium steady-state conditions. We record millions of random electron tunneling events at different bias points, thus collecting extensive statistics. We show that for all bias voltages, the experimental average values of the minima of stochastic entropy production lie ab

Testing the resource trade-off hypothesis for carotenoid-based signal honesty using genetic variants of the domestic canary

Carotenoid-based coloration in birds is widely considered an honest signal of individual condition, but the mechanisms responsible for condition dependency in such ornaments remain debated. Currently, the most common explanation for how carotenoid coloration serves as a reliable signal of condition is the resource trade-off hypothesis, which proposes that use of carotenoids for ornaments reduces t

Breathlessness and incidence of COPD, cardiac events and all-cause mortality : A 44-year follow-up from middle age throughout life

Background Breathlessness is prevalent in the general population and may be associated with adverse health outcomes. This study aimed to evaluate the association of breathlessness with Chronic Obstructive Pulmonary Disease (COPD) events, cardiac events and all-cause mortality from middle-age throughout life. Methods Breathlessness was measured in 699, 55-year old men residing in Malmö, Sweden usin

Three dimensional structure prediction and ligand-protein interaction study of expansin protein ATEXPA23 from arabidopsis thaliana L.

Arabidopsis thaliana L. is a small flowering plant that is widely used as a model organism in plant biology. In the present study, we study the peripheral membrane protein ATEXPA23 from Arabidopsis thaliana L. using homology modelling and molecular docking. The microarray analysis shows expression of ATEXPA23 (AT5G39280) protein, which leads to loosening and extension of plant cell walls. This pro