113 research outputs found
Acoustic Comfort in Atria Covered by Novel Structural Skins
No full textAbstractIn large rooms, where many people gather such as atria, food courts or restaurants, relatively high noise levels can occur, due to so called “Lombard effect”. The “Lombard effect” is a reflex of vocal chords that relates to changes of the voice characteristics in noisy background. Typically an increase of the vocal intensity, the fundamental voice frequency, and the word duration will occur. Noise levels in an enclosed place are influenced not only by the amount and character of sound sources present, but also by the overall reverberation of sound in the space.This article deals with the investigation of the acoustic conditions in three large gathering places covered by glass and foils. We focus on the investigation of the influence of the amount and position of sound absorption in atria on their reverberation time and on the occurrence of various sound phenomena, such as flutter echoes, focusing of sound etc. Results of the measurements are used for calibration of acoustical models. Different architectural solutions simulated in ray-based software are compared
Electrical remodelling of the left and right atria due to rheumatic mitral stenosis
No full textPublished on behalf of the European Society of Cardiology. All rights reserved. © The Author 2008.AimsTo characterize the atrial remodelling in mitral stenosis (MS).Methods and resultsTwenty-four patients with severe MS undergoing commissurotomy and 24 controls were studied. Electrophysiological evaluation was performed in 12 patients in each group by positioning multi-electrode catheters in both atria to determine the following: effective refractory period (ERP) at 10 sites at 600 and 450 ms; conduction time; conduction delay at the crista terminalis (CT); and vulnerability for atrial fibrillation (AF). P-wave duration (PWD) was determined on the surface ECG. In the remaining 12 patients in each group, electroanatomic maps of both atria were created to determine conduction velocity and identify regions of low voltage and electrical silence. Patients with MS had larger left atria (LA) (P ConclusionAtrial remodelling in MS is characterized by LA enlargement, loss of myocardium, and scarring associated with widespread and site-specific conduction abnormalities and no change or an increase in ERP. These abnormalities were associated with a heightened inducibility of AF.Bobby John, Martin K. Stiles, Pawel Kuklik, Sunil T. Chandy, Glenn D. Young, Lorraine Mackenzie, Lukasz Szumowski, George Joseph, Jacob Jose, Stephen G. Worthley, Jonathan M. Kalman and Prashanthan Sander
Contrast-enhanced CMR in patients after percutaneous closure of the left atrial appendage: A pilot study
No full textAbstract Background To evaluate the feasibility and value of first-pass contrast-enhanced dynamic and post-contrast 3D CMR in patients after transcatheter occlusion of left atrial appendage (LAA) to identify incorrect placement and persistent leaks. Methods 7 patients with different occluder systems (n = 4 PLAATO; n = 2 Watchman; n = 1 ACP) underwent 2 contrast-enhanced (Gd-DOTA) CMR sequences (2D TrueFISP first-pass perfusion and 3D-TurboFLASH) to assess localization, artifact size and potential leaks of the devices. Perfusion CMR was analyzed visually and semi-quantitatively to identify potential leaks. Results All occluders were positioned within the LAA. The ACP occluder presented the most extensive artifact size. Visual assessment revealed a residual perfusion of the LAA apex in 4 cases using first-pass perfusion and 3D-TurboFLASH indicating a suboptimal LAA occlusion. By assessing signal-to-time-curves the cases with a visually detected leak showed a 9-fold higher signal-peak in the LAA apex (567 ± 120% increase from baseline signal) than those without a leak (61 ± 22%; p Conclusion This CMR pilot study provides valuable non-invasive information in patients after transcatheter occlusion of the LAA to identify correct placement and potential leaks. We recommend incorporating CMR in future clinical studies to evaluate new device types.</p
On law and legal reasoning
No full textThis book is about legal theory and legal reasoning. In particular,it seeks to examine the relations that obtain between law and a theory of law and legal reasoning and a theory of legal reasoning. Two features of law and legal reasoning are treated as being of particular importance in this regard: law is institutional, and legal reasoning is formal. These two features are so closely connected that it is reasonable to believe that in fact they are simply two ways of looking at the same issue. This becomes clearer as the focus of the book shifts from the institutional nature of law to the consequences of this for legal reasoning, and which is the principal focus of the book. The author received the European Academy of Legal Theory award in 2000 for the doctoral dissertation on which this work was based
It Ain't Over ...Till It's Over
No full textBut anyone who has ever tried to make a big life change knows it can be a bit more complicated— and frightening—than that. How do you get up the nerve and confidence to actually take the leap? No one knows better than the women profiled in this powerful book by actress, activist, and bestselling author Marlo Thomas.
It Ain’t Over . . . Till It’s Over introduces us to sixty amazing women who are proving that it’s never too late to live out a dream—to launch a business, travel the world, get a PhD, indulge a creative impulse, make a family recipe famous, escape danger, find love, or fill a void in life with a challenging new experience. Meet a graphic artist who fulfilled a childhood ambition by going to med school at age forty-two; a suburban mom whose innovative snack recipe for her daughter’s lunchbox turned into a multimillion-dollar business; a private-practice psychiatrist who convinced her husband that they should quit their jobs and take off on an exciting, open-ended, cross-country adventure—in a giant bus, no less!; and a middle-aged English teacher who, devastated to discover that her husband was cheating on her, refused to be a victim, filed for divorce, and began the challenging journey of rebuilding her life.
Brimming with anecdotes that will inspire smiles, tears, and—most of all—hope, It Ain’t Over speaks to women of all ages with an empowering message: The best is yet to come
Container Misdeclaration Practices and Their Impact on Ship Safety: A Qualitative Study in the Shipping Industry: Praktik Misdeklarasi Kontainer dan Dampaknya terhadap Keselamatan Kapal: Studi Kualitatif pada Industri Pelayaran
No full text
This study aims to describe the phenomenon of misdeclaring container weight and contents by shippers and freight forwarders and its impact on ship operational safety. This problem arises from the practice of falsifying weights, packaging that does not comply with international standards, and concealing hazardous cargo, which has contributed to the increase in container ship accidents over the past decade. A qualitative approach was used to understand the experiences and perceptions of shipowners, seafarers, and relevant authorities. Data were collected through in-depth interviews, document studies of container ship accidents, and analysis of reports from international maritime agencies. Thematic analysis techniques were used to identify patterns of misdeclaration practices, causal factors, and the risks they pose to ship stability and crew safety. The results show that misdeclaring container weights causes structural imbalances in cargo, increases pressure on container stacks, and triggers containers to fall overboard. Meanwhile, misdeclaring hazardous cargo has the potential to cause chemical reactions, fires, explosions, and the release of toxic gases when ships are in open waters. The findings also reveal weak oversight of the implementation of the verified gross weight policy and the limitations of international customs inspections, which still rely on shipper declarations. In conclusion, container misdeclaration is a serious threat to the shipping industry and requires strengthening regulations, improving seafarers' competency, and establishing independent verification mechanisms to ensure the safety and security of the maritime logistics chain
Reyna Grande - Award Winning Author and Inspirational Speaker
No full textPlease join us as we welcome award-winning author, Reyna Grande, to Collin College, Frisco campus. She will be here tomorrow, September 25th from 6:00-8:00pm to present about her experience as a writer, first-generation college student, and her quest for the American dream. All students and employees are encourage to attend. Please consider offering extra credit to your students. The event will take place at Frisco Conference Center, Section E. Students should bring student ID for sign-in. Pizza will be available to students from 6:00-6:30pm and the presentation will begin at 6:30pm. There will be a book signing following her presentation. This is a fantastic opportunity for students to come and learn from an accomplished author. Please email me if you have questions and see the attached flier. Additionally, more information on Reyna can be found below.
Reyna Grande is the author of the bestselling memoir, The Distance Between Us, (Atria, 2012). The much-anticipated sequel, A Dream Called Home (Atria), will be released this fall. Her other works include the novels, Across a Hundred Mountains, (Atria, 2006) and Dancing with Butterflies (Washington Square Press, 2009) which were published to critical acclaim. Her books have been adopted as the common read selection by schools, colleges and cities across the country. Reyna has received several awards, including an American Book Award, the El Premio Aztlán Literary Award, and a Luis Leal Award for Distinction in Chicano/Latino Literature. Born in Iguala, Guerrero, Mexico, Reyna entered the U.S. as an undocumented immigrant, and later went on to become the first person in her family to graduate from college. She holds a B.A. in creative writing and film & video from the University of California, Santa Cruz and an M.F.A. in creative writing from Antioch University. Currently, she teaches creative writing at writing conferences, travels across the country and abroad to give presentations about her books, and is at work on a new novel.
More about the event: https://themexicannextdoor.com/reyna-grande-comes-to-frisco
IT in the Public Sector: A Road for Development Services, A Bibliographical Study
No full textAims: This research was conducted to find out the development of IT research articles in the public sector published in international journals from 2011 to 2020, to find out the collaboration map between researchers, to be input and direction for further researchers in determining the research study topic.
Study Design: This research is a literature study using the bibliometrics analysis method.
Place and Duration of Study: The Google Schoolar Database, period 2011 to 2020.
Methodology: In the initial search, 976 journals were found. The following selection searched for journal articles that specifically discuss IT in the public sector; as many as 140 journals were found.
Results: In the initial search, 976 journals were found. The following selection searched for journal articles that specifically discuss IT in the public sector; as many as 140 journals were found. Based on research on the growth of IT research articles in the public sector in 2011-2020, an average of 14% or a total of 14 articles per year. The trend of research tends to decrease, and the authors of these articles come from developed countries, while from developing countries such as Indonesia, there are still few.
Conclusion: Based on research on the growth of IT research articles in the public sector in 2011-2020, an average of 14% or a total of 14 articles per year. The trend of research tends to decrease, and the authors of these articles come from developed countries, while from developing countries such as Indonesia, there are still few. The topic of further research development can be focused on improving public services for developing countries, such as agriculture, e-health, e-democracy, government initiatives and etcetra
Autonomic mechanism for initiation of rapid firing from atria and pulmonary veins: evidence by ablation of ganglionated plexi
No full textAims Previous studies showed that autonomic activation by high-frequency electrical stimulation (HFS) during myocardial refractoriness evokes rapid firing from pulmonary vein (PV) and atria, both in vitro and in vivo. This study sought to investigate the autonomic mechanism underlying the rapid firings at various sites by systematic ablation of multiple ganglionated plexi (GP). Methods and results In 43 mongrel dogs, rapid firing-mediated atrial. fibrillation (AF) was induced by local HFS (200 Hz, impulse duration 0.1 ms, train duration 40 ms) to the PVs and atria during myocardial refractoriness. The main GP in the atrial fat pads or the ganglia along the ligament of Marshall (LCM) were then ablated. Ablation of the anterior right GP and inferior right GP significantly increased the AF threshold by HFS at the right atrium and PVs. The AF threshold at left atrium and PVs was significantly increased by ablation of the superior left GP and inferior left GP, and was further increased by ablation of the LOM. Ablation of left- or right-sided GP on the atria had a significant effect on contralateral PVs and atrium. Administration of esmolol (1 mg/kg) or atropine (1 mg) significantly increased AF threshold at all sites. Conclusion HFS applied to local atrial and PV sites initiated rapid firing via activation of the interactive autonomic network in the heart. GP in either left side or right side contributes to the rapid firings and AF originating from ipsolateral and contralateral PVs and atrium. Autonomic denervation suppresses or eliminates those rapid firings.Cardiac & Cardiovascular SystemsSCI(E)45ARTICLE2245-2528
Penapisan dan Karakterisasi Protease dari Bakteri Termo-Asidofilik P5-A dari Sumber Air Panas Tambarana
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