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Bromage d

Seung-Whan Bahk, Christophe Dorrer, Jake Bromage
Two-dimensional chromatic aberrations are characterized by a single-shot scheme based on a simultaneous measurement of chromatically diversified focal spots. The chromatic diversity is introduced by a 2-D grating with holographic defocus terms. The chromatic aberrations in the beam are either subtracted or added by the additional known chromatic aberrations in the grating, depending on the diffraction order. By analyzing the asymmetry in the size of diffracted focal spots, input beam chromatic aberrations can be deduced...
April 2, 2018: Optics Express
Paraskevi K Matsota, Kalliopi H Drachtidi, Chrysanthi Z Batistaki, Agathi V Karakosta, Ioanna C Koukopoulou, Eugenia I Koursoumi, Georgia G Kostopanagiotou
BACKGROUND: Patient-Controlled Epidural Analgesia (PCEA) is a common practice for labour pain relief. This study aimed to compare two different settings of a PCEA device using the same solution to obtain labour analgesia. METHODS: Fifty two parturients were randomly allocated to receive ropivacaine 0.15% and fentanyl 2γ/mL via a PCEA device either as a background infusion of 5mL/h plus 5mL demand bolus doses with 10 min lockout (group B/D, n=26) or as only demand bolus doses of 5mL with 10 min lockout (group D, n=26)...
January 16, 2018: Minerva Anestesiologica
Ashutosh Kumar Singh, Abhyuday Kumar, Ashok Kumar, Braj Kishore Prasad, Pradeep Kumar Tiwary, Ranjeet Kumar
Objective: The primary objective of this study was to compare the analgesic effects of intrathecal ropivacaine with or without neostigmine or dexmedetomidine in lower limb surgeries. Secondary objectives were to study the characteristics of block, duration of analgesia, postoperative analgesic requirement, and associated side effects. Materials and Methods: Seventy-five patients posted for elective orthopedic lower limb surgeries under spinal anesthesia were randomly divided into three equal groups to receive intrathecal ropivacaine 0...
October 2017: Anesthesia, Essays and Researches
T Petersen, J D Zuegel, J Bromage
An ultrafast, high-average-power, extended-cavity, femtosecond BiB3 O6 optical parametric oscillator was constructed as a test bed for investigating the scalability of infrared parametric devices. Despite the high pulse energies achieved by this system, the reduction in slope efficiency near the maximum-available pump power prompted the investigation of thermal effects in the crystal during operation. The local heating effects in the crystal were used to determine the impact on both phase matching and thermal lensing to understand limitations that must be overcome to achieve microjoule-level pulse energies at high repetition rates...
August 20, 2017: Applied Optics
Sabri Bromage, Daria Tselmen, Gary Bradwin, Michael F Holick, Davaasaambuu Ganmaa
BACKGROUND AND OBJECTIVES: Assay cost, quality, and availability pose challenges for vitamin D surveys in limited resource settings. This study aimed to validate an inexpensive vitamin D assay (ELISA) under real-world conditions in Mongolia, the northernmost developing country, to characterize the assay's usefulness and inform the design of epidemiologic studies in similar regions. METHODS AND STUDY DESIGN: We collected paired summer and winter serum samples from 120 men and women (aged 20-57 years) in urban and rural Mongolia, analyzed each sample for 25(OH)D concentration using both Immunodiagnostic Systems ELISA and DiaSorin LIAISON 25(OH)D TOTAL, and compared the assays using multiple statistics...
2017: Asia Pacific Journal of Clinical Nutrition
Davaasambuu Ganmaa, Baatar Munkhzul, Wafaie Fawzi, Donna Spiegelman, Walter C Willett, Purev Bayasgalan, Erkhembayar Baasansuren, Burneebaatar Buyankhishig, Sereeter Oyun-Erdene, David A Jolliffe, Theodoros Xenakis, Sabri Bromage, Barry R Bloom, Adrian R Martineau
RATIONALE: Existing trials of adjunctive vitamin D in the treatment of pulmonary tuberculosis (PTB) are variously limited by small sample sizes, inadequate dosing regimens, and high baseline vitamin D status among participants. Comprehensive analyses of the effects of genetic variation in the vitamin D pathway on response to vitamin D supplementation are lacking. OBJECTIVES: To determine the effect of high-dose vitamin D3 on response to antimicrobial therapy for PTB and to evaluate the influence of single-nucleotide polymorphisms (SNPs) in vitamin D pathway genes on response to adjunctive vitamin D3 ...
September 1, 2017: American Journal of Respiratory and Critical Care Medicine
Pi-I D Lin, Sabri Bromage, Md Golam Mostofa, Joseph Allen, Emily Oken, Molly L Kile, David C Christiani
This prospective study evaluated the relationship between long-term dietary habits and total arsenic (As) concentration in toenail clippings in a cohort of 1616 pregnant women in the Bangladeshi administrative regions of Sirajdikhan and Pabna Sadar. Diet was assessed at Gestation Week 28 and at Postpartum Month 1, using a locally-validated dish-based semi-quantitative food-frequency questionnaire. Toenail As concentration was analyzed by microwave-assisted acid digestion and inductively coupled plasma mass spectrometry...
April 23, 2017: Nutrients
T Petersen, J D Zuegel, J Bromage
A high-energy, extended-cavity femtosecond BiBO optical parametric oscillator synchronously pumped by a 1.0-ps, 1030-nm Yb:YAG, thin-disk pump laser is presented. The oscillator operated near degeneracy in a noncollinear interaction geometry, producing signal wavelength tunability from 1.99 to 2.20 μm. The signal pulses have an average power exceeding 2 W, producing 455-fs pulses at 7.08 MHz with energies up to 350 nJ, showing increased potential for tunable sources of scalable ultrafast pulses in the infrared...
April 17, 2017: Optics Express
Pi-I D Lin, Sabri Bromage, Md Golam Mostofa, Joseph Allen, Emily Oken, Molly L Kile, David C Christiani
A locally validated tool was needed to evaluate long-term dietary intake in rural Bangladesh. We assessed the validity of a 42-item dish-based semi-quantitative food frequency questionnaire (FFQ) using two 3-day food diaries (FDs). We selected a random subset of 47 families (190 participants) from a longitudinal arsenic biomonitoring study in Bangladesh to administer the FFQ. Two 3-day FDs were completed by the female head of the households and we used an adult male equivalent method to estimate the FD for the other participants...
January 10, 2017: Nutrients
Rajan Veeratterapillay, Sanjai K Addla, Clare Jelley, John Bailie, David Rix, Steve Bromage, Neil Oakley, Robin Weston, Naeem A Soomro
OBJECTIVE: To describe a multicentre experience of robot-assisted partial nephrectomy (RAPN) in northern England, with focus on early surgical outcomes and oncological results. PATIENTS AND METHODS: All consecutive patients undergoing RAPN at four tertiary referral centres in northern England in the period 2012-2015 were included for analysis. RAPN was performed via a transperitoneal approach using a standardized technique. Prospective data collection was performed to capture preoperative characteristics (including R...
October 2017: BJU International
M P Valdivia, D Stutman, C Stoeckl, C Mileham, I A Begishev, W Theobald, J Bromage, S P Regan, S R Klein, G Muñoz-Cordovez, M Vescovi, V Valenzuela-Villaseca, F Veloso
No abstract text is available yet for this article.
November 2016: Review of Scientific Instruments
M P Valdivia, D Stutman, C Stoeckl, C Mileham, I A Begishev, W Theobald, J Bromage, S P Regan, S R Klein, G Muñoz-Cordovez, M Vescovi, V Valenzuela-Villaseca, F Veloso
Talbot-Lau X-ray deflectometry (TXD) has been developed as an electron density diagnostic for High Energy Density (HED) plasmas. The technique can deliver x-ray refraction, attenuation, elemental composition, and scatter information from a single Moiré image. An 8 keV Talbot-Lau interferometer was deployed using laser and x-pinch backlighters. Grating survival and electron density mapping were demonstrated for 25-29 J, 8-30 ps laser pulses using copper foil targets. Moiré pattern formation and grating survival were also observed using a copper x-pinch driven at 400 kA, ∼1 kA/ns...
November 2016: Review of Scientific Instruments
Sabri Bromage, Janet W Rich-Edwards, Daria Tselmen, Ana Baylin, Lisa A Houghton, Nachin Baasanjav, Davaasambuu Ganmaa
Many factors put Mongolians at risk of vitamin D deficiency. Despite low levels observed in Mongolian children and pregnant women, there are few data published on the vitamin D status of non-pregnant adults. Between summer 2011 and winter 2013, paired summer and winter blood samples were collected from 320 healthy men and women (20-58 years) living in eight Mongolian provinces. Mean serum 25(OH)D concentrations were 22.5 ng/mL (95% CI: 14.5, 32.5) in summer and 7.7 ng/mL (95% CI: 4.6, 10.8) in winter, with a distribution (<10/10-20/20-30/≥30 ng/mL) of 3...
September 23, 2016: Nutrients
I Smolyar, T Bromage, M Wikelski
Large-scale patterns evident from satellite images of aeolian landforms on Earth and other planets; those of intermediate scale in marine and terrestrial sand ripples and sediment profiles; and small-scale patterns such as lamellae in the bones of vertebrates and annuli in fish scales are each represented by layers of different thicknesses and lengths. Layered patterns are important because they form a record of the state of internal and external factors that regulate pattern formation in these geological and biological systems...
March 2016: Heliyon
Daniel I Bromage, Daniel A Jones, Krishnaraj S Rathod, Claire Grout, M Bilal Iqbal, Pitt Lim, Ajay Jain, Sundeep S Kalra, Tom Crake, Zoe Astroulakis, Mick Ozkor, Roby D Rakhit, Charles J Knight, Miles C Dalby, Iqbal S Malik, Anthony Mathur, Simon Redwood, Philip A MacCarthy, Andrew Wragg
BACKGROUND: ST-segment elevation myocardial infarction is increasingly common in octogenarians, and optimal management in this cohort is uncertain. This study aimed to describe the outcomes of octogenarians with ST-segment elevation myocardial infarction treated by primary percutaneous coronary intervention. METHODS AND RESULTS: We analyzed 10 249 consecutive patients with ST-segment elevation myocardial infarction treated with primary percutaneous coronary intervention between 2005 and 2011 at 8 tertiary cardiac centers across London, United Kingdom...
June 27, 2016: Journal of the American Heart Association
M P Valdivia, D Stutman, C Stoeckl, W Theobald, C Mileham, I A Begishev, J Bromage, S P Regan
X-ray phase-contrast techniques can measure electron density gradients in high-energy-density plasmas through refraction induced phase shifts. An 8 keV Talbot-Lau interferometer consisting of free standing ultrathin gratings was deployed at an ultra-short, high-intensity laser system using K-shell emission from a 1-30 J, 8 ps laser pulse focused on thin Cu foil targets. Grating survival was demonstrated for 30 J, 8 ps laser pulses. The first x-ray deflectometry images obtained under laser backlighting showed up to 25% image contrast and thus enabled detection of electron areal density gradients with a maximum value of 8...
February 2016: Review of Scientific Instruments
Timothy G Bromage, Youssef Idaghdour, Rodrigo S Lacruz, Thomas D Crenshaw, Olexandra Ovsiy, Björn Rotter, Klaus Hoffmeier, Friedemann Schrenk
The paradigm of chronobiology is based almost wholly upon the daily biological clock, or circadian rhythm, which has been the focus of intense molecular, cellular, pharmacological, and behavioral, research. However, the circadian rhythm does not explain biological timings related to fundamental aspects of life history such as rates of tissue/organ/body size development and control of the timing of life stages such as gestation length, age at maturity, and lifespan. This suggests that another biological timing mechanism is at work...
2016: PloS One
A Malik, D I Bromage, Z He, L Candilio, A Hamarneh, S Taferner, S M Davidson, D M Yellon
No abstract text is available yet for this article.
December 2015: Cardiovascular Drugs and Therapy
Jahnabee Sarma, P Shankara Narayana, P Ganapathi, M C Shivakumar
INTRODUCTION: Intrathecal clonidine or dexmedetomidine has improved the quality of spinal anesthesia, this clinical study was undertaken to assess the behavior of intrathecal clonidine as an adjuvant to bupivacaine in augmenting sensory block in patients undergoing lower limb surgeries. MATERIALS AND METHODS: We studied 150 patients, between 18 and 60 years of age, patients were randomly divided into three groups of 50 each Group B: 0.5% bupivacaine 15 mg + 0.5 ml normal saline Group C: 0...
May 2015: Anesthesia, Essays and Researches
M Bilal Iqbal, Ramzi Khamis, Charles Ilsley, Ghada Mikhail, Tom Crake, Sam Firoozi, Sundeep Kalra, Charles Knight, Andrew Archbold, Pitt Lim, Anthony Mathur, Pascal Meier, Roby D Rakhit, Simon Redwood, Mark Whitbread, Dan Bromage, Krishna Rathod, Daniel A Jones, Andrew Wragg, Miles Dalby, Phil MacCarthy, Iqbal S Malik
BACKGROUND: Primary percutaneous coronary intervention (PPCI) is the treatment of choice for ST-segment-elevation myocardial infarction. Resources are limited during out of working hours (OWH). Whether PPCI outside working hours is associated with worse outcomes and whether outcomes have improved over time are unknown. METHODS AND RESULTS: We analyzed 11 466 patients undergoing PPCI between 2004 and 2011 at all 8 tertiary cardiac centers in London, United Kingdom...
June 2015: Circulation. Cardiovascular Interventions
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