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Membrane-based processes for sustainable power generation using water
Logan, Bruce E.,Elimelech, Menachem Nature Publishing Group, a division of Macmillan P 2012 Nature Vol.488 No.7411
Water has always been crucial to combustion and hydroelectric processes, but it could become the source of power in membrane-based systems that capture energy from natural and waste waters. Two processes are emerging as sustainable methods for capturing energy from sea water: pressure-retarded osmosis and reverse electrodialysis. These processes can also capture energy from waste heat by generating artificial salinity gradients using synthetic solutions, such as thermolytic salts. A further source of energy comes from organic matter in waste waters, which can be harnessed using microbial fuel-cell technology, allowing both wastewater treatment and power production.
Richard, Logan 한국일본언어문화학회 2020 일본언어문화 Vol.50 No.-
In the early works of Shusaku Endo, the word “yellow” is often used to describe the Japanese protagonist. Why did Endo Shusaku use the word “yellow”, which is used by Westerners to belittle Asians, for the Japanese characters in his works? The use of “yellow” to describe Asians and current attitudes to the word as racial discrimination is discussed. .
Comparative analysis of noise from three Falcon 9 launches
Mathews, Logan T.,Gee, Kent L.,Hart, Grant W.,Rasband, Reese D.,Novakovich, Daniel J.,Irarrazabal, Francisco I.,Vaughn, Aaron B.,Nelson, Pauline The Acoustical Society of Korea 2020 韓國音響學會誌 Vol.39 No.4
This study investigates the far-field noise from three Falcon 9 vehicle launches from Vandenberg Air Force Base, CA, USA, as measured from the same location within the nearby community of Lompoc. The overall sound pressure levels for the three launches are shown to be similar, but some differences in the early launch period are thought to be weather-related. The peak directivity angle in overall level is approximately 65 deg, which is consistent with horizontally-fired, static rocket data. For the third launch, waveforms and spectra are analyzed for different events during the launch sequence. The measured spectral bandwidth decreases with time, but spectral levels remain above the ambient noise throughout the main-engine firing. Additionally, late-launch phenomena observed in the data appear to be correlated with main-engine cutoff and second-stage engine start.
Quantized plasmon quenching dips nanospectroscopy via plasmon resonance energy transfer
Liu, Gang Logan,Long, Yi-Tao,Choi, Yeonho,Kang, Taewook,Lee, Luke P Nature Publishing Group 2007 NATURE METHODS Vol.4 No.12
We observed quantized plasmon quenching dips in resonant Rayleigh scattering spectra by plasmon resonance energy transfer (PRET) from a single nanoplasmonic particle to adsorbed biomolecules. This label-free biomolecular absorption nanospectroscopic method has ultrahigh molecular sensitivity.
Resting Heart Rate and Aortic Stiffness in Normotensive Adults
Jeongok G. Logan,Suk-Sun Kim 대한심장학회 2016 Korean Circulation Journal Vol.46 No.6
Background and Objective: Large-artery stiffness is an independent predictor of cardiovascular disease (CVD), and carotid-femoral pulse wave velocity (cfPWV) is considered the gold standard measure of arterial stiffness. A resting heart rate is an easily measured vital sign that is also associated with CVD morbidity and mortality. Previous studies have reported the significant relationship of a resting heart rate with arterial stiffness as measured by cfPWV only in hypertensive subjects; their relationship in nonhypertensive subjects remains unknown. The present study, therefore, examined their relationship in normotensive subjects. Subjects and Methods: In 102 healthy Korean Americans between ages 20 and 60 years, their resting heart rate was measured by an automated blood pressure measuring device after a 10 minute rest in the supine position. Arterial stiffness was measured by cfPWV using the SphygmoCor device. Results: The mean resting heart rate of participants (mean age, 39.64 years; 59% women) was 61.91 bpm (standard deviation [SD], 9.62 bpm) and mean the cfPWV was 6.99 (SD, 1.14) m/s. A multiple regression analysis showed that a resting heart rate is a significant predictor of cfPWV after controlling for age, body mass index, and mean arterial pressure. For one bpm increase of resting heart rate, cfPWV increased approximately 0.02 m/s. Conclusion: Our results suggest that a higher resting heart rate is independently associated with increased arterial stiffness as measured by cfPWV in normotensive adults. Arterial stiffness may explain the prognostic role of an individual’s heart rate in cardiovascular morbidity and mortality.
THE ROLE OF BRANDING IN CONSTRUAL LEVEL THEORY
AJ Beltis,John Logan,Sukki Yoon,Kacy Kim,Gayatri Subramanian 글로벌지식마케팅경영학회 2016 Global Marketing Conference Vol.2016 No.7
Construal Level Theory (CLT) has been explored and researched in many different contexts. In an academic setting, the areas of CLT in time (temporal distance), physical space (spatial distance), and interpersonal/social distance are frequently revisited for the implications they may and often do have. High-level construals are associated with abstract thinking, while low-level construals are associated with more concrete thinking (Trope & Liberman, 2010). In today’s media-saturated world, it is important to understand how the branded messages the world receives affect the cognition of society as a whole. This project aims to explore what role, if any, branding and/or product placement has in the cognitive and performance abilities for various tasks. This will be tested by utilizing branded products in a task-completion challenge and measuring through both task performance and collected survey data from participants. This project will focus on the construal levels of individuals and how the use of and/or the engagement with a socially proximal branded item will affect perceived spatial distance. A study from Van Kerckhove, Geuend, & Vermeir (2014) found that construal levels impact behaviors. The results of their 2014 published study showed that individuals with a high construal (i.e. they thought more abstractly) were linked to a strong inclination to look up, whereas when individuals had lower-level construals (i.e. thinking more concretely) they were more likely to have a behavior of looking down. This ties into their paper’s title quite nicely – “the floor is nearer than the sky” – in that looking down at what is perceivable and spatially proximal is less likely to be viewed as ambiguous or abstract.
Khue Tran,Logan Hubbard,Christof Karmonik,Timothy B Boone,Rose Khavari 대한배뇨장애요실금학회 2022 International Neurourology Journal Vol.26 No.S1
Purpose: This study evaluates the grey and white brain matter characteristics in women with multiple sclerosis (MS) and detrusor sphincter dyssynergia (DSD). Grey matter is assessed via the functional connectivity (FC) of brain regions activated during voiding, using functional magnetic resonance imaging (fMRI). Two white matter tracts involved in bladder function, the anterior thalamic radiation (ATR) and superior longitudinal fasciculus (SLF), were evaluated using diffusion tensor imaging. Methods: Twenty-seven women with MS (2 groups: no-DSD [n=23] or DSD [n=4]), and 8 healthy controls (HCs) underwent concurrent urodynamic-fMRI evaluation with 4 cycles of bladder filling and emptying. A FC similarity measure (FC_ sim) was calculated for each subject to express the similarity of individual FC at voiding initiation compared to all FC patterns. ATR and SLF tracts were traced and their fractional anisotropy (FA) and mean diffusivity (MD) were recorded. Results: Mean FC_sim values were significantly different among the 3 groups indicating distinct FC patterns; however, no significant difference was found between DSD and no-DSD groups. DSD group showed trends of lower FA and higher MD— indicating loss of coherence—in all tracts compared to HCs, and in the left and right ATR when compared to MS women with neither DSD nor voiding dysfunction (VD), suggesting more damage in these tracts for MS women with DSD. Conclusions: Women with MS show distinctly different FC patterns compared to HCs. There are trends showing more damage in the ATR in women with MS and DSD compared to those with neither DSD nor VD.