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https://www.readbyqxmd.com/read/28214193/quantification-of-the-overall-measurement-uncertainty-associated-with-the-passive-moss-biomonitoring-technique-sample-collection-and-processing
#1
J R Aboal, M T Boquete, A Carballeira, A Casanova, S Debén, J A Fernández
In this study we examined 6080 data gathered by our research group during more than 20 years of research on the moss biomonitoring technique, in order to quantify the variability generated by different aspects of the protocol and to calculate the overall measurement uncertainty associated with the technique. The median variance of the concentrations of different pollutants measured in moss tissues attributed to the different methodological aspects was high, reaching values of 2851 (ng·g(-1))(2) for Cd (sample treatment), 35...
February 14, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28214110/pediatric-echocardiographic-nomograms-what-has-been-done-and-what-still-needs-to-be-done
#2
REVIEW
Massimiliano Cantinotti, Shelby Kutty, Eliana Franchi, Marco Paterni, Marco Scalese, Giorgio Iervasi, Martin Koestenberger
Nomograms are essential tools for quantification in pediatric echocardiography. In the last few years, multiple sources highlight that nomograms employed for decades presented significant numerical and methodological limitations. As a result, widely different ranges of normality were generated, thus creating confusion in estimation of several cardiac diseases. New nomograms have recently been generated, overcoming some of the gaps of previous research: wider sample sizes (including neonates/infants), solid statistical/methodological plan, and availability of new data (chamber dimensions, many functional parameters)...
January 19, 2017: Trends in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28213593/randomised-double-blind-parallel-group-placebo-controlled-study-to-evaluate-the-analgesic-efficacy-and-safety-of-vvz-149-injections-for-postoperative-pain-following-laparoscopic-colorectal-surgery
#3
Srdjan S Nedeljkovic, Darin J Correll, Xiaodong Bao, Natacha Zamor, Jose L Zeballos, Yi Zhang, Mark J Young, Johanna Ledley, Jessica Sorace, Kristen Eng, Carlyle P Hamsher, Rajivan Maniam, Jonathan W Chin, Becky Tsui, Sunyoung Cho, Doo H Lee
INTRODUCTION: In spite of advances in understanding and technology, postoperative pain remains poorly treated for a significant number of patients. In colorectal surgery, the need for developing novel analgesics is especially important. Patients after bowel surgery are assessed for rapid return of bowel function and opioids worsen ileus, nausea and constipation. We describe a prospective, double-blind, parallel group, placebo-controlled randomised controlled trial testing the hypothesis that a novel analgesic drug, VVZ -149, is safe and effective in improving pain compared with providing opioid analgesia alone among adults undergoing laparoscopic colorectal surgery...
February 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28212904/level-of-agreement-between-forearm-and-upper-arm-blood-pressure-measurements-in-patients-with-large-arm-circumference
#4
Sheri Watson, Marita Aguas, Pat Colegrove, Nancy Foisy, Bonnie Jondahl, Zoe Anastas
PURPOSE: The purpose of the study was to determine if forearm blood pressures (BPs) measured in three different locations agree with the recommended upper arm location for noninvasive BP measurement. DESIGN: A method-comparison design was used. METHODS: In a convenience sample of postanesthesia care unit patients with large upper arm circumference, BP's were obtained in three different forearm locations (lower forearm, middle forearm, and upper forearm) and compared to upper arm BP using an automated BP measuring device...
February 2017: Journal of Perianesthesia Nursing: Official Journal of the American Society of PeriAnesthesia Nurses
https://www.readbyqxmd.com/read/28212466/withdrawn-propranolol-for-migraine-prophylaxis
#5
REVIEW
Klaus Linde, Karin Rossnagel
BACKGROUND: Propranolol is one of the most commonly prescribed drugs for migraine prophylaxis. OBJECTIVES: We aimed to determine whether there is evidence that propranolol is more effective than placebo and as effective as other drugs for the interval (prophylactic) treatment of patients with migraine. SEARCH METHODS: Potentially eligible studies were identified by searching MEDLINE/PubMed (1966 to May 2003) and the Cochrane Central Register of Controlled Trials (Issue 2, 2003), and by screening bibliographies of reviews and identified articles...
February 17, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28211796/fluence-correction-factor-for-graphite-calorimetry-in-a-clinical-high-energy-carbon-ion-beam
#6
Ana Lourenco, Russell Thomas, Michael Homer, Hugo Bouchard, Severine Rossomme, James Renaud, Tatsuaki Kanai, Gary Royle, Hugo Palmans
The aim of this work is to develop and adapt a formalism to determine absorbed dose to water from graphite calorimetry measurements in carbon-ion beams. Fluence correction factors, <i>k</i><sub>fl</sub>, needed when using a graphite calorimeter to derive dose to water, were determined in a clinical high-energy carbon-ion beam. Measurements were performed in a 290 MeV/n carbon-ion beam with a field size of 11 x 11 cm<sup>2</sup>, without modulation. In order to sample the beam, a plane-parallel Roos ionization chamber was chosen for its small collecting volume in comparison with the field size...
February 17, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28205115/a-fixed-precision-sequential-sampling-plan-for-the-potato-tuberworm-moth-phthorimaea-operculella-zeller-lepidoptera-gelechidae-on-potato-cultivars
#7
M Shahbi, A Rajabpour
Phthorimaea operculella Zeller is an important pest of potato in Iran. Spatial distribution and fixed-precision sequential sampling for population estimation of the pest on two potato cultivars, Arinda(®) and Sante(®), were studied in two separate potato fields during two growing seasons (2013-2014 and 2014-2015). Spatial distribution was investigated by Taylor's power law and Iwao's patchiness. Results showed that the spatial distribution of eggs and larvae was random. In contrast to Iwao's patchiness, Taylor's power law provided a highly significant relationship between variance and mean density...
February 15, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28202589/catching-ghosts-with-a-coarse-net-use-and-abuse-of-spatial-sampling-data-in-detecting-synchronization
#8
Natalia Petrovskaya, Sergei Petrovskii
Synchronization of population dynamics in different habitats is a frequently observed phenomenon. A common mathematical tool to reveal synchronization is the (cross)correlation coefficient between time courses of values of the population size of a given species where the population size is evaluated from spatial sampling data. The corresponding sampling net or grid is often coarse, i.e. it does not resolve all details of the spatial configuration, and the evaluation error-i.e. the difference between the true value of the population size and its estimated value-can be considerable...
February 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28202078/examples-of-sex-gender-sensitivity-in-epidemiological-research-results-of-an-evaluation-of-original-articles-published-in-jech-2006-2014
#9
Ingeborg Jahn, Claudia Börnhorst, Frauke Günther, Tilman Brand
BACKGROUND: During the last decades, sex and gender biases have been identified in various areas of biomedical and public health research, leading to compromised validity of research findings. As a response, methodological requirements were developed but these are rarely translated into research practice. The aim of this study is to provide good practice examples of sex/gender sensitive health research. METHODS: We conducted a systematic search of research articles published in JECH between 2006 and 2014...
February 15, 2017: Health Research Policy and Systems
https://www.readbyqxmd.com/read/28202072/a-pilot-randomised-controlled-trial-evaluating-mini-and-conventional-implant-retained-dentures-on-the-function-and-quality-of-life-of-patients-with-an-edentulous-mandible
#10
Sarra Jawad, Craig Barclay, William Whittaker, Martin Tickle, Tanya Walsh
BACKGROUND: Total tooth loss (edentulism) can be a debilitating condition, impacting on ability to chew, speak and interact with others. The most common treatment is with complete removable dentures, which may be successful, but in the lower jaw, bone resorption that worsens over time makes denture-wearing difficult. Two dental implants in the mandible to retain the lower denture has been advocated as the gold standard of treatment, but has not been universally provided due largely to financial constraints and also patient fear...
February 15, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28199877/characterising-stormwater-gross-pollutants-captured-in-catch-basin-inserts
#11
Md Zahanggir Alam, A H M Faisal Anwar, Dipok Chandra Sarker, Anna Heitz, Craig Rothleitner
The accumulation of wash-off solid waste, termed gross pollutants (GPs), in drainage systems has become a major constraint for best management practices (BMPs) of stormwater. GPs should be captured at source before the material clogs the drainage network, seals the infiltration capacity of side entry pits or affects the aquatic life in receiving waters. BMPs intended to reduce stormwater pollutants include oil and grit separators, grassed swales, vegetated filter strips, retention ponds, and catch basin inserts (CBIs) are used to remove GP at the source and have no extra land use requirement because they are typically mounted within a catch basin (e...
February 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28199126/singularity-correction-for-long-range-corrected-density-functional-theory-with-plane-wave-basis-sets
#12
Yukio Kawashima, Kimihiko Hirao
We introduced two methods to correct the singularity in the calculation of long-range HF exchange for long-range corrected density functional theory (LC-DFT) calculations in plane-wave basis sets. The first method introduces an auxiliary function to cancel out the singularity. The second method introduces a truncated long-range Coulomb potential, which has no singularity. We assessed the introduced methods using the LC-BLYP functional by applying it to isolated systems of naphthalene and pyridine. We first compared the total energies and the HOMO energies of the singularity-corrected and uncorrected calculations and confirmed that singularity correction is essential for LC-DFT calculations using plane-wave basis sets...
February 15, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28199103/using-the-k-d-tree-data-structure-to-accelerate-monte-carlo-simulations
#13
Qile Paul Chen, Bai Xue, J Ilja Siepmann
The k-d tree data structure is implemented in a Monte Carlo (MC) molecular simulation program to accelerate the range search for particles or interaction sites within the cutoff distance when Lennard-Jones and Coulomb interactions are computed. MC simulations are performed for different molecules in various ensembles to assess the efficiency enhancements due to the k-d tree data structure. It is found that the use of k-d trees accelerates significantly simulations for Lennard-Jones particles in the NVT and NVT-Gibbs ensembles and for n-butane and 2,4,6,8,10,12,14,16,18,20,22-undecamethylpentacosane represented by the TraPPE-UA force field in the NpT ensemble...
February 15, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28199090/molecular-size-separated-brown-carbon-absorption-for-biomass-burning-aerosol-at-multiple-field-sites
#14
Robert A Di Lorenzo, Rebecca A Washenfelder, Alexis Rae Attwood, Hongyu Guo, Lu Xu, Nga Lee Ng, Rodney J Weber, Karsten Baumann, Eric S Edgerton, Cora J Young
Biomass burning is a known source of brown carbon aerosol in the atmosphere. We collected filter samples of biomass burning emissions at three locations in Canada and the United States, with transport times of 10 h to >3 days. We analyzed the samples with size exclusion chromatography coupled to molecular absorbance spectroscopy to determine absorbance as a function of molecular size. The majority of absorption was due to molecules >500 Da, and these contributed an increasing fraction of absorption as the biomass burning aerosol aged...
February 15, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28197973/assessment-and-evaluation-of-an-integrated-hybrid-anaerobic-aerobic-sewage-treatment-system-for-the-removal-of-enteric-viruses
#15
Waled Morsy El-Senousy, Sohair Imam Abou-Elela
The capability of a cost-effective and a small size decentralized pilot wastewater treatment plant (WWTP) to remove enteric viruses such as rotavirus, norovirus genogroup I (GGI), norovirus genogroup II (GGII), Hepatitis E virus (HEV), and adenovirus was studied. This pilot plant is an integrated hybrid anaerobic/aerobic setup which consisted of anaerobic sludge blanket (UASB), biological aerated filter (BAF), and inclined plate settler (IPS). Both the UASB and BAF are packed with a non-woven polyester fabric (NWPF)...
February 14, 2017: Food and Environmental Virology
https://www.readbyqxmd.com/read/28196917/validation-of-milliflex%C3%A2-quantum-for-bioburden-testing-of-pharmaceutical-products
#16
Oliver Gordon, Marcel Goverde, Alexandra Staerk, David Roesti
This article reports the validation strategy used to demonstrate that the Milliflex® Quantum yielded non-inferior results to the traditional bioburden method. It was validated according to USP <1223>, Ph. Eur. 5.1.6 and PDA Technical Report No. 33 and comprised the validation parameters Robustness, Ruggedness, Repeatability, Specificity, Limit of Detection and Quantification, Accuracy, Precision, Linearity, Range and Equivalence in Routine Operation. For the validation, a combination of pharmacopeial ATCC strains as well as a broad selection of in-house isolates was used...
February 14, 2017: PDA Journal of Pharmaceutical Science and Technology
https://www.readbyqxmd.com/read/28196405/psychosocial-interventions-for-supporting-women-to-stop-smoking-in-pregnancy
#17
REVIEW
Catherine Chamberlain, Alison O'Mara-Eves, Jessie Porter, Tim Coleman, Susan M Perlen, James Thomas, Joanne E McKenzie
BACKGROUND: Tobacco smoking remains one of the few preventable factors associated with complications in pregnancy, and has serious long-term implications for women and babies. Smoking in pregnancy is decreasing in high-income countries, but is strongly associated with poverty and is increasing in low- to middle-income countries. OBJECTIVES: To assess the effects of smoking cessation interventions during pregnancy on smoking behaviour and perinatal health outcomes...
February 14, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28196392/patellofemoral-osteochondral-allografts-can-we-improve-the-matching-process
#18
Jason R Determann, James E Fleischli, Donald F D'Alessandro, Dana P Piasecki
An important consideration for the successful use of fresh osteochondral allografts for the patellofemoral joint is selection of appropriately sized donor allografts. This is particularly challenging for matching grafts to the patella because of the substantial variability in articular contour that exists. At present, selection of donor patellae is based only on the width of the proximal tibia, with no established means of quantifying basic patellar size, facet configuration, or articular contour. We hypothesized that using a combination of standard radiographic measurements to generate an accurate profile of the recipients native patella would result in a more accurate donor graft...
February 14, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28195887/minimal-invasive-rhinoplasty-fat-injection-for-nasal-dorsum-contouring
#19
Susie Lin, Yen-Chang Hsiao, Jung-Ju Huang, Chun-Shin Chang, Philip Kuo-Ting Chen, Jyh-Ping Chen, Lun-Jou Lo, Yu-Ray Chen
PURPOSE: To determine the graft retention rate of fat injection rhinoplasty in the nasal dorsum region using 3dMD System. MATERIALS AND METHODS: Thirteen consecutive patients (12 women and 1 man) treated by the corresponding author (F.C.S.C.) between April of 2014 and December of 2015 for autologous fat injection rhinoplasty at the nasal dorsum region to improve facial esthetics were included in this study. Preoperative and postoperative 3-dimensional (3-D) photography images taken 3 months after fat injection rhinoplasty were superimposed at the level of forehead to measure the volume changes at the nasal dorsum region...
February 14, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28195473/a-local-order-parameter-based-method-for-simulation-of-free-energy-barriers-in-crystal-nucleation
#20
Neda Khanjari, Hossein Eslami, Florian Müller-Plathe
While global order parameters have widely been used, as reaction coordinates, in nucleation and crystallization studies, their use in nucleation studies is claimed to have a serious drawback. In this work, a local order parameter is introduced, as a local reaction coordinate, to drive the simulation from the liquid to solid phase and vice versa. This local order parameter holds information regarding the order in the first and the second shell neighbors of a particle and has different well-defined values for local crystallites and disordered neighborhoods, but is insensitive to the type of the crystal structure...
February 14, 2017: Journal of Chemical Theory and Computation
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