keyword
MENU ▼
Read by QxMD icon Read
search

derose

keyword
https://www.readbyqxmd.com/read/27906331/compact-silicon-photonic-resonance-sssisted-variable-optical-attenuator
#1
Xiaoxi Wang, Ryan Aguinaldo, Anthony Lentine, Christopher DeRose, Andrew L Starbuck, Douglas Trotter, Andrew Pomerene, Shayan Mookherjea
A two-part silicon photonic variable optical attenuator is demonstrated in a compact footprint which can provide a high extinction ratio at wavelengths between 1520 nm and 1620 nm. The device was made by following the conventional p-i-n waveguide section by a high-extinction-ratio second-order microring filter section. The rings provide additional on-off contrast by utilizing a thermal resonance shift, which harvested the heat dissipated by current injection in the p-i-n junction. We derive and discuss a simple thermal-resistance model in explanation of these effects...
November 28, 2016: Optics Express
https://www.readbyqxmd.com/read/27884484/ross-hybrid-arch-and-frozen-elephant-trunk-reconstruction-for-late-complications-of-bicuspid-aortic-valve-and-aortopathy
#2
Matthew Valdis, Gaetano DeRose, Linrui Guo, Michael W A Chu
Young patients with bicuspid aortic valve disease and aortopathy remain a clinical challenge, with many requiring multiple corrective operations throughout their lifetimes. Innovative surgical approaches are often required to address complex aortic pathologic conditions but leave patients at risk for reintervention, lifelong anticoagulation, and suboptimal hemodynamics. We describe an active 44-year-old female triathlete with recurrent bicuspid aortic stenosis, a small aortic root, a hypoplastic aortic arch and complex distal arch, and a descending aortic aneurysm, who underwent a single-stage reconstruction with a combined Ross procedure, hybrid arch, and frozen elephant trunk reconstruction...
December 2016: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/27876520/explaining-endograft-shortening-during-endovascular-repair-of-abdominal-aortic-aneurysms-in-severe-aortoiliac-tortuosity
#3
Kevin Lee, Sajjid Hossain, Maher Sabalbal, Luc Dubois, Audra Duncan, Guy DeRose, Adam H Power
OBJECTIVE: During endovascular aneurysm repair (EVAR), severely tortuous aortoiliac anatomy can alter the deployment and conformability of the endograft. The accuracy of treatment length measurements is commonly recognized to be affected by severe tortuosity. However, the exact mechanism of the postintervention length discrepancy is poorly understood. The objective of this study was to determine the mechanism of how severe aortoiliac tortuosity influences the endograft and native aorta during EVAR and its impact on the distal sealing zone...
November 19, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27855673/gender-and-physician-specialization-and-practice-settings-in-ecuador-a-qualitative-study
#4
Rita Bedoya-Vaca, Kathryn P Derose, Natalia Romero-Sandoval
BACKGROUND: The increasing proportion of women in the medical profession is a worldwide phenomenon often called the "feminization of medicine." However, it is understudied in low and middle-income countries, particularly in Latin America. METHODS: Using a qualitative, descriptive design, we explored the influence of gender and other factors on physician career decision-making and experiences, including medical specialty and public vs. private practice, in Quito, Ecuador, through in-depth, semi-structured interviews (n = 31) in 2014...
November 17, 2016: BMC Health Services Research
https://www.readbyqxmd.com/read/27828374/wide-range-and-fast-thermally-tunable-silicon-photonic-microring-resonators-using-the-junction-field-effect
#5
Xiaoxi Wang, Anthony Lentine, Christopher DeRose, Andrew L Starbuck, Douglas Trotter, Andrew Pomerene, Shayan Mookherjea
Tunable silicon microring resonators with small, integrated micro-heaters which exhibit a junction field effect were made using a conventional silicon-on-insulator (SOI) photonic foundry fabrication process. The design of the resistive tuning section in the microrings included a "pinched" p-n junction, which limited the current at higher voltages and inhibited damage even when driven by a pre-emphasized voltage waveform. Dual-ring filters were studied for both large (>4.9 THz) and small (850 GHz) free-spectral ranges...
October 3, 2016: Optics Express
https://www.readbyqxmd.com/read/27616014/beyond-mg-2-functional-interactions-between-rna-and-transition-metals
#6
Adam M Saunders, Victoria J DeRose
It is well-known that RNA structure and function depend heavily on cations, and the ability of Mg(2+) to stabilize RNA structures has been emphasized. Recent studies, however, highlight the importance of transition metals in RNA function. Riboswitches that selectively bind Ni(2+), Co(2+), and Mn(2+) have been discovered with specific RNA-metal sites that influence metal-related gene expression. Exogenous metals such as Pt(II) from therapeutics also bind and may inhibit cellular RNA function. Novel reports that RNA can host Fe(II) in catalytic sites are relevant to early life in pre-oxygenic atmospheres...
September 5, 2016: Current Opinion in Chemical Biology
https://www.readbyqxmd.com/read/27557187/high-performance-waveguide-coupled-ge-on-si-linear-mode-avalanche-photodiodes
#7
Nicholas J D Martinez, Christopher T Derose, Reinhard W Brock, Andrew L Starbuck, Andrew T Pomerene, Anthony L Lentine, Douglas C Trotter, Paul S Davids
We present experimental results for a selective epitaxially grown Ge-on-Si separate absorption and charge multiplication (SACM) integrated waveguide coupled avalanche photodiode (APD) compatible with our silicon photonics platform. Epitaxially grown Ge-on-Si waveguide-coupled linear mode avalanche photodiodes with varying lateral multiplication regions and different charge implant dimensions are fabricated and their illuminated device characteristics and high-speed performance is measured. We report a record gain-bandwidth product of 432 GHz for our highest performing waveguide-coupled avalanche photodiode operating at 1510nm...
August 22, 2016: Optics Express
https://www.readbyqxmd.com/read/27530875/fortune-or-misfortune-asymptomatic-delayed-presentation-of-complete-dehiscence-of-mechanical-aortic-valve-conduit-and-pseudoaneurysm
#8
Kyung Taek Oh, Joseph Derose, Cynthia Taub
Complete dehiscence of a composite aortic valve graft with pseudoaneurysm formation is a rare complication following aortic root replacement. This complication often takes place in the setting of acute graft infection and accompanies symptoms of heart failure, valve insufficiency or sepsis. We present a delayed, asymptomatic presentation of this complication in a young man with distant history of aortic root replacement and medically treated prosthetic valve endocarditis a year postoperatively. He had been non-adherent to warfarin over 10 years, but otherwise maintained a healthy life...
2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27443431/hybrid-coronary-revascularization-for%C3%A2-the%C3%A2-treatment-of-multivessel-coronary%C3%A2-artery-disease-a-multicenter-observational-study
#9
John D Puskas, Michael E Halkos, Joseph J DeRose, Emilia Bagiella, Marissa A Miller, Jessica Overbey, Johannes Bonatti, V S Srinivas, Mark Vesely, Francis Sutter, Janine Lynch, Katherine Kirkwood, Timothy A Shapiro, Konstantinos D Boudoulas, Juan Crestanello, Thomas Gehrig, Peter Smith, Michael Ragosta, Steven J Hoff, David Zhao, Annetine C Gelijns, Wilson Y Szeto, Giora Weisz, Michael Argenziano, Thomas Vassiliades, Henry Liberman, William Matthai, Deborah D Ascheim
BACKGROUND: Hybrid coronary revascularization (HCR) combines minimally invasive surgical coronary artery bypass grafting of the left anterior descending artery with percutaneous coronary intervention (PCI) of non-left anterior descending vessels. HCR is increasingly used to treat multivessel coronary artery disease that includes stenoses in the proximal left anterior descending artery and at least 1 other vessel, but its effectiveness has not been rigorously evaluated. OBJECTIVES: This National Institutes of Health-funded, multicenter, observational study was conducted to explore the characteristics and outcomes of patients undergoing clinically indicated HCR and multivessel PCI for hybrid-eligible coronary artery disease, to inform the design of a confirmatory comparative effectiveness trial...
July 26, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27427469/comparisons-of-sleep-apnoea-rate-and-outcomes-among-patients-with-resistant-and-non-resistant-hypertension
#10
Simran K Bhandari, Jiaxiao Shi, Miklos Z Molnar, Scott A Rasgon, Stephen F Derose, Csaba P Kovesdy, David A Calhoun, Kamyar Kalantar-Zadeh, Steven J Jacobsen, John J Sim
BACKGROUND AND OBJECTIVE: We directly compared sleep apnoea (SA) rates and risk of cardiovascular and mortality outcomes among SA patients with resistant hypertension (RH) and non-RH within a large diverse hypertension population. METHODS: A retrospective cohort study between 1 January 2006 and 31 December 2010 among hypertensive adults (age ≥ 18 years) was performed within an integrated health system. Rates of SA in RH and non-RH were determined. Multivariable logistic regression analyses were used to calculate OR for SA...
July 18, 2016: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/27378152/comparison-of-fipronil-sources-in-north-carolina-surface-water-and-identification-of-a-novel-fipronil-transformation-product-in-recycled-wastewater
#11
Rebecca L McMahen, Mark J Strynar, Larry McMillan, Eugene DeRose, Andrew B Lindstrom
Fipronil is a phenylpyrazole insecticide that is widely used in residential and agricultural settings to control ants, roaches, termites, and other pests. Fipronil and its transformation products have been found in a variety of environmental matrices, but the source[s] which makes the greatest contribution to fipronil in surface water has yet to be determined. A sampling effort designed to prioritize known fipronil inputs (golf courses, residential areas, biosolids application sites and wastewater facilities) was conducted in North Carolina to learn more about the origins of fipronil in surface water...
November 1, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27317978/ciclavia-evaluation-of-participation-physical-activity-and-cost-of-an-open-streets-event-in-los-angeles
#12
Deborah Cohen, Bing Han, Kathryn P Derose, Stephanie Williamson, Aaron Paley, Christina Batteate
Physical activity is beneficial for health, but there are limited opportunities in urban areas to safely access public streets for traffic-free cycling, skating or walking. Ciclovías are open streets programs that close major roads to motor vehicles so they can be exclusively used by bicyclists and pedestrians. We estimated participation in one Los Angeles Ciclovía event (CicLAvia) using intercept surveys and 14 surveillance cameras which were placed along the 6-mile route in April 2014. We also applied estimates of the distance and speed traveled from the use of GPS data acquired from subsequent CicLAvia events...
September 2016: Preventive Medicine
https://www.readbyqxmd.com/read/27266582/potential-of-risk-based-population-guidelines-to-reduce-cardiovascular-risk-in-a-large-integrated-health-system
#13
Galina Inzhakova, Hui Zhou, Macdonald Morris, Megan I Early, Anny H Xiang, Steven J Jacobsen, Stephen F Derose
OBJECTIVES: We evaluated an alternative way to implement guidelines using an automated risk calculator and risk-based decision tool to calculate patients' risk of cardiovascular disease (CVD) and recommend therapies. We compared such an approach with traditional guidelines. STUDY DESIGN: A retrospective cohort study of 1,506,109 Kaiser Permanente Southern California members 35 years or older. METHODS: We estimated 3-year risks of fatal and nonfatal myocardial infarction and stroke using an independently developed risk calculator, then graphically compared risks with observed outcomes...
2016: American Journal of Managed Care
https://www.readbyqxmd.com/read/27157312/iatrogenic-ventricular-septal-defect-following-transcatheter-aortic-valve-replacement-a-systematic-review
#14
REVIEW
Tomo Ando, Anthony A Holmes, Cynthia C Taub, David P Slovut, Joseph J DeRose
BACKGROUND: Ventricular septal defects (VSD) are rarely reported as a complication following transcatheter aortic valve replacement (TAVR). We sought to characterise the patients, clinical management, and outcomes regarding this rare phenomenon. METHODS: Relevant articles were identified by a systematic search of MEDLINE and EMBASE databases from January, 2002 to September, 2015. RESULTS: A total of 18 case reports, including 20 patients, were identified...
October 2016: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/27073732/ventricular-septal-rupture-complicating-acute-myocardial-infarction-in-the-modern-era-with-mechanical-circulatory-support-a-single-center-observational-study
#15
Jared J Liebelt, Yuanquan Yang, Joseph J DeRose, Cynthia C Taub
Ventricular septal rupture (VSR) is a rare but devastating complication after acute myocardial infarction (AMI). While the incidence has decreased, the mortality rate from VSR has remained extremely high. The use of mechanical circulatory support with intra-aortic balloon pump (IABP) and extracorporal membrane oxygenation (ECMO) may be useful in providing hemodynamic stability and time for myocardial scarring. However, the optimal timing for surgical repair remains an enigma. Retrospective analysis of 14 consecutive patients diagnosed with VSR after AMI at Montefiore Medical Center between January 2009 and June 2015...
2016: American Journal of Cardiovascular Disease
https://www.readbyqxmd.com/read/27065480/the-paradox-of-parks-in-low-income-areas-park-use-and-perceived-threats
#16
Deborah A Cohen, Bing Han, Kathryn P Derose, Stephanie Williamson, Terry Marsh, Laura Raaen, Thomas L McKenzie
Concerns about safety and perceived threats have been considered responsible for lower use of parks in high poverty neighborhoods. To quantify the role of perceived threats on park use we systematically observed 48 parks and surveyed park users and household residents in low-income neighborhoods in the City of Los Angeles. Across all parks, the majority of both park users and local residents perceive parks as safe or very safe. We noted apparently homeless individuals during nearly half of all observations, but very few instances of fighting, intimidating groups, smoking and intoxication...
January 2016: Environment and Behavior
https://www.readbyqxmd.com/read/27040451/two-year-outcomes-of-surgical-treatment-of-moderate-ischemic-mitral-regurgitation
#17
RANDOMIZED CONTROLLED TRIAL
Robert E Michler, Peter K Smith, Michael K Parides, Gorav Ailawadi, Vinod Thourani, Alan J Moskowitz, Michael A Acker, Judy W Hung, Helena L Chang, Louis P Perrault, A Marc Gillinov, Michael Argenziano, Emilia Bagiella, Jessica R Overbey, Ellen G Moquete, Lopa N Gupta, Marissa A Miller, Wendy C Taddei-Peters, Neal Jeffries, Richard D Weisel, Eric A Rose, James S Gammie, Joseph J DeRose, John D Puskas, François Dagenais, Sandra G Burks, Ismail El-Hamamsy, Carmelo A Milano, Pavan Atluri, Pierre Voisine, Patrick T O'Gara, Annetine C Gelijns
BACKGROUND: In a trial comparing coronary-artery bypass grafting (CABG) alone with CABG plus mitral-valve repair in patients with moderate ischemic mitral regurgitation, we found no significant difference in the left ventricular end-systolic volume index (LVESVI) or survival after 1 year. Concomitant mitral-valve repair was associated with a reduced prevalence of moderate or severe mitral regurgitation, but patients had more adverse events. We now report 2-year outcomes. METHODS: We randomly assigned 301 patients to undergo either CABG alone or the combined procedure...
May 19, 2016: New England Journal of Medicine
https://www.readbyqxmd.com/read/27031926/beyond-mg-2-functional-interactions-between-rna-and-transition-metals
#18
REVIEW
Adam M Saunders, Victoria J DeRose
It is well-known that RNA structure and function depend heavily on cations, and the ability of Mg(2+) to stabilize RNA structures has been emphasized. Recent studies, however, highlight the importance of transition metals in RNA function. Riboswitches that selectively bind Ni(2+), Co(2+), and Mn(2+) have been discovered with specific RNA-metal sites that influence metal-related gene expression. Exogenous metals such as Pt(II) from therapeutics also bind and may inhibit cellular RNA. Novel reports that RNA can host Fe(II) in catalytic sites are relevant to early life in pre-oxygenic atmospheres...
April 2016: Current Opinion in Chemical Biology
https://www.readbyqxmd.com/read/27000144/effects-of-a-pilot-church-based-intervention-to-reduce-hiv-stigma-and-promote-hiv-testing-among-african-americans-and-latinos
#19
Kathryn P Derose, Beth Ann Griffin, David E Kanouse, Laura M Bogart, Malcolm V Williams, Ann C Haas, Karen R Flórez, Deborah Owens Collins, Jennifer Hawes-Dawson, Michael A Mata, Clyde W Oden, Brian D Stucky
HIV-related stigma and mistrust contribute to HIV disparities. Addressing stigma with faith partners may be effective, but few church-based stigma reduction interventions have been tested. We implemented a pilot intervention with 3 Latino and 2 African American churches (4 in matched pairs) in high HIV prevalence areas of Los Angeles County to reduce HIV stigma and mistrust and increase HIV testing. The intervention included HIV education and peer leader workshops, pastor-delivered sermons on HIV with imagined contact scenarios, and HIV testing events...
August 2016: AIDS and Behavior
https://www.readbyqxmd.com/read/26985750/standardizing-assessment-of-competences-and-competencies-of-oncology-nurses-working-in-ambulatory-care
#20
Clara Beaver, Morris A Magnan, Denise Henderson, Patricia DeRose, Kathleen Carolin, Gerold Bepler
A nursing quality consortium standardized nursing practice across 17 independently functioning ambulatory oncology sites. Programs were developed to validate both competences and competencies. One program assessed nine competences needed to develop systems of care to detect and treat treatment-related side effects. A second program was developed to assess competencies needed to prevent harm to oncology patients. This manuscript describes a successful approach to standardizing nursing practice across geographically distant academic and community sites...
March 2016: Journal for Nurses in Professional Development
keyword
keyword
34143
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"