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Bounce back

Soo-Kyung Chun, Hansol Jang, Soon-Woo Cho, Nam Su Park, Chang-Seok Kim
We demonstrate an unfolding displacement measurement method to overcome the aliasing problem of wavelength-comb-swept laser (WCSL). Compared to the conventional wavelength-swept laser (WSL), the WCSL exhibits an extended coherence length, owing to the narrowing spectral linewidth of the etalon filter. However, the aliasing interference signal induces an unexpected back-bounced phenomenon during displacement measurement because of the discretely distributed comb-like periodic spectra of the etalon filter. By using the dual-reference interferometry method, the back-bounced displacement measurement can be successfully unfolded to extend the measurement range by two times...
March 5, 2018: Optics Express
Rafael Tadmor, Sakshi B Yadav, Semih Gulec, Aisha Leh, Lan Dang, Hartmann E N'guessan, Ratul Das, Mireille Turmine, Maria Tadmor
It is shown that introducing gravity in the energy minimization of drops on surfaces results in different expressions when minimized with respect to volume or with respect to contact angle. This phenomenon correlates with the probability of drops to bounce on smooth surfaces on which they otherwise form a very small contact angle or wet them completely. Theoretically, none of the two minima is stable: each minimum can bounce to the other and the drop should oscillate from one minimum to the other as long as no other force or friction will dissipate the energy...
March 6, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
Zhiqiang Shen, Huilin Ye, Martin Kröger, Ying Li
The PEGylated liposome, composed of an aqueous core and a fluid state lipid bilayer shell, is one of the few Food and Drug Administration (FDA) approved drug delivery platforms. To prevent the absorption of serum proteins, the surface of a liposome is decorated by hydrophilic and bio-compatible polyethylene glycol (PEG) polymers, which can significantly extend the blood circulation time of liposomes. In this work, with the help of dissipative particle dynamics (DPD) simulations, we explore how the tethered PEG polymers will affect the membrane wrapping process of PEGylated liposomes during endocytosis...
February 20, 2018: Nanoscale
Gregory Gafni-Pappas, Susanne D DeMeester, Michael A Boyd, Arun Ganti, Adam M Nicholson, Jeremy Albright, Juan Wu
OBJECTIVE: The HAS-Choice pathway utilizes the HEART Score, an accelerated diagnostic protocol (ADP), and shared decision-making using a visual aid in the evaluation of chest pain patients. We seek to determine if our intervention can improve resource utilization in a community emergency department (ED) setting while maintaining safe patient care. METHODS: This was a single-center prospective cohort study with historical that included ED patients ≥21years old presenting with a primary complaint of chest pain in two time periods...
February 8, 2018: American Journal of Emergency Medicine
Xiaoyu Tang, Abhishek Saha, Chung K Law, Chao Sun
When a drop impacts on a liquid surface, it can either bounce back or merge with the surface. The outcome affects many industrial processes in that merging is preferred in spray coating to generate a uniform layer and bouncing is desired in IC engines to prevent accumulation of the fuel drop on the wall. Thus, a good understanding of how to control the impact outcome is highly demanded to optimize the performance. For a given liquid, a regime diagram of bouncing and merging outcomes can be mapped in the space of Weber number (ratio of impact inertia and surface tension) vs...
January 23, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
Mahed-Ul-Islam Choudhury, C Emdad Haque
The varied interpretations of the concept of resilience in natural hazards research literature has attracted numerous criticisms. A common criticism centers around a poor understanding of the changes caused by natural disasters by the research stream. Considering resilience as a metaphor of change, and newspaper as a catalyst that often highlights post-disaster opportunities for "forward looking" (rather than bouncing back) changes, we examined some specific aspects of change in Canadian communities by analyzing coverage of natural disasters in daily newspapers...
January 6, 2018: Environmental Management
Lucila M Zamboni
A systematic literature review on quantitative methods to assess community resilience was conducted following Institute of Medicine and Patient-Centered Outcomes Research Institute standards. Community resilience is the ability of a community to bounce back or return to normal after a disaster strikes, yet there is no agreement on what this actually means. All studies reviewed addressed natural disasters, but the methodological approaches can be applied to technological disasters, epidemics, and terrorist attacks...
December 2017: Disaster Medicine and Public Health Preparedness
Wilaiwan Pathike, Anthony Paul O'Brien, Sharyn Hunter
OBJECTIVE: This study explored the concept of resilience in rural Thai older people. METHOD: The study was exploratory and descriptive in design. Ethnographic fieldwork was undertaken in four rural Thai communities. Non-participant observation (340 h) and 35 semi-structured interviews with older people enabled the collection of qualitative data. Nvivo 10 was used to collate and organise the qualitative data. Data analysis was conducted thematically. RESULTS: One major core theme and five qualitative sub-themes emerged from the data related to the theoretical construct of rural Thai elders' resilience...
December 11, 2017: Aging & Mental Health
George S Hanzel
No abstract text is available yet for this article.
December 11, 2017: JACC. Cardiovascular Interventions
Marith van Schrojenstein Lantman, Aurora J A E van de Loo, Marlou Mackus, Aletta D Kraneveld, Karel A Brookhuis, Johan Garssen, Joris C Verster
Introduction: Although most drinkers have experienced a hangover the day following heavy alcohol consumption, a minority claims to be hangover resistant despite consuming the same large quantities of alcohol as those reporting alcohol hangover. The aim of the current study was to examine if susceptibility to experiencing hangovers is related to a drinker's interpretation of wellbeing and psychological assets to bounce back. Methods: A survey was conducted among 2295 Dutch students assessing their past month alcohol consumption patterns, and measuring mental resilience and wellbeing...
December 4, 2017: Alcohol and Alcoholism: International Journal of the Medical Council on Alcoholism
Niek H Benerink, Frank T J M Zaal, Remy Casanova, Nathalie Bonnardel, Reinoud J Bootsma
In many daily situations, our behavior is coordinated with that of others. This study investigated this coordination in a doubles-pong task. In this task, two participants each controlled a paddle that could move laterally near the bottom of a shared computer screen. With their paddles, the players needed to block balls that moved down under an angle. In doing so, they needed to make sure that their paddles did not collide. A successful interception led to the ball bouncing back upwards. Importantly, all communication other than through vision of the shared screen was excluded...
February 2018: Human Movement Science
Frederick M Tomlin, Ulla I M Gerling-Driessen, Yi-Chang Liu, Ryan A Flynn, Janakiram R Vangala, Christian S Lentz, Sandra Clauder-Muenster, Petra Jakob, William F Mueller, Diana Ordoñez-Rueda, Malte Paulsen, Naoko Matsui, Deirdre Foley, Agnes Rafalko, Tadashi Suzuki, Matthew Bogyo, Lars M Steinmetz, Senthil K Radhakrishnan, Carolyn R Bertozzi
Proteasome inhibitors are used to treat blood cancers such as multiple myeloma (MM) and mantle cell lymphoma. The efficacy of these drugs is frequently undermined by acquired resistance. One mechanism of proteasome inhibitor resistance may involve the transcription factor Nuclear Factor, Erythroid 2 Like 1 (NFE2L1, also referred to as Nrf1), which responds to proteasome insufficiency or pharmacological inhibition by upregulating proteasome subunit gene expression. This "bounce-back" response is achieved through a unique mechanism...
November 22, 2017: ACS Central Science
Edwine W Barasa, Keith Cloete, Lucy Gilson
Recent health system shocks such as the Ebola disease outbreak have focused global health attention on the notion of resilient health systems. In this commentary, we reflect on the current framing of the concept of resilience in health systems discourse and propose a reframing. Specifically, we propose that: (1) in addition to sudden shocks, health systems face the ongoing strain of multiple factors. Health systems need the capacity to continue to deliver services of good quality and respond effectively to wider health challenges...
November 1, 2017: Health Policy and Planning
Jijun Zhang, Jiawei Li, Guoguo Tan, Renchao Hu, Junqiang Wang, Chuntao Chang, Xinmin Wang
Thin and flexible materials that can provide efficient electromagnetic interference (EMI) shielding are urgently needed, especially if they can be easily processed and withstand harsh environments. Herein, layer-structured Fe-Si-B/Ni-Cu-P metallic glass composites have been developed by simple electroless plating Ni-Cu-P coating on commercial Fe-Si-B metallic glasses. The 0.1 mm-thick composite shows EMI shielding effectiveness of 40 dB over the X-band frequency range, which is higher than those of traditional metals, metal oxides, and their polymer composites of larger thickness...
December 6, 2017: ACS Applied Materials & Interfaces
Bradley D Shy, George T Loo, Tina Lowry, Eugene Y Kim, Ula Hwang, Lynne D Richardson, Jason S Shapiro
STUDY OBJECTIVE: Analyses of 72-hour emergency department (ED) return visits are frequently used for quality assurance purposes and have been proposed as a means of measuring provider performance. These analyses have traditionally examined only patients returning to the same hospital as the initial visit. We use a health information exchange network to describe differences between ED visits resulting in 72-hour revisits to the same hospital and those resulting in revisits to a different site...
September 27, 2017: Annals of Emergency Medicine
Qing Liu, Ya-Ling He, Qing Li
In this paper, an enthalpy-based multiple-relaxation-time (MRT) lattice Boltzmann (LB) method is developed for solid-liquid phase-change heat transfer in metal foams under the local thermal nonequilibrium (LTNE) condition. The enthalpy-based MRT-LB method consists of three different MRT-LB models: one for flow field based on the generalized non-Darcy model, and the other two for phase-change material (PCM) and metal-foam temperature fields described by the LTNE model. The moving solid-liquid phase interface is implicitly tracked through the liquid fraction, which is simultaneously obtained when the energy equations of PCM and metal foam are solved...
August 2017: Physical Review. E
David G Coughlin, Monisha A Kumar, Neha N Patel, Rebecca L Hoffman, Scott E Kasner
BACKGROUND: Early unplanned readmissions of "bouncebacks" to intensive care units are a healthcare quality metric and result in higher mortality and greater cost. Few studies have examined bouncebacks to the neurointensive care unit (neuro-ICU), and we sought to design and implement a quality improvement pilot to reduce that rate. METHODS: First, we performed a retrospective chart review of 504 transfers to identify potential bounceback risk factors. Risk factors were assessed on the day of transfer by the transferring physician identifying patients as "high risk" or "low risk" for bounceback...
September 19, 2017: Neurocritical Care
Leah F Nelson, Karisa K Harland, Dan M Shane, Azeemuddin Ahmed, Nicholas M Mohr
PURPOSE: This paper investigates patient outcomes including length of stay (LOS), cost of hospitalization, bounce-back rates, transition to hospice care, and mortality, following back-transfer. METHODS: This study was an observational case-control study of adults hospitalized in Iowa between 2005 and 2013 to identify back-transferred patients. Back-transfer was defined as the transfer of rural patients near the end of their acute hospitalization in a comprehensive medical center back to a local community hospital for the completion of their medical care...
September 18, 2017: Journal of Rural Health
Takahiro Koishi, Kenji Yasuoka, Xiao Cheng Zeng
Molecular dynamics simulations of impinging nanodroplets were performed to study the bounce-back condition for flat and nanopillared surfaces. We found that the bounce-back condition can be closely related to the degree of droplet deformation upon collision with the solid surface. When the droplets have little or small deformation, the bounce-back condition solely depends on the hydrophobicity of the surface. On the other hand, when the droplet deformation is large, the impinging velocity dependence of the bounce-back condition becomes stronger due to the increase of the liquid-vapor interfacial area of colliding droplet, which is proportional to the liquid-vapor surface energy...
September 20, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
Dan Lu, Shunkun Yang, Jiaquan Zhang, Huijuan Wang, Daqing Li
Epidemic propagation on complex networks has been widely investigated, mostly with invariant parameters. However, the process of epidemic propagation is not always constant. Epidemics can be affected by various perturbations and may bounce back to its original state, which is considered resilient. Here, we study the resilience of epidemics on networks, by introducing a different infection rate λ2 during SIS (susceptible-infected-susceptible) epidemic propagation to model perturbations (control state), whereas the infection rate is λ1 in the rest of time...
August 2017: Chaos
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