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https://www.readbyqxmd.com/read/28110386/an-optimization-protocol-for-swiss-3t3-feeder-cell-growth-arrest-by-mitomycin-c-dose-to-volume-derivation-strategy
#1
Rishi Man Chugh, Madhusudan Chaturvedi, Lakshmana Kumar Yerneni
Feeder cell functionality following growth-arrest with the cost-effective Mitomycin C vis-à-vis irradiation is controversial due to several methodological variables reported. Earlier, we demonstrated variability in growth arrested Swiss 3T3 feeder cell life-span following titration of feeder cell densities with Mitomycin C concentrations which led to the derivation of doses per cell. Alternatively, to counter the unexpected feeder regrowth at high exposure cell density, we proposed titration of a fixed density with arithmetically derived volumes of Mitomycin C solution that corresponded to permutations of specific concentrations and doses per cell...
January 21, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28107960/thermal-desorption-modulation-for-comprehensive-two-dimensional-gas-chromatography-using-a-simple-and-inexpensive-segmented-loop-fluidic-interface
#2
Vanessa Mucédola, Luis C S Vieira, Danilo Pierone, Angelo L Gobbi, Ronei J Poppi, Leandro W Hantao
In this study, we introduce a modulation strategy for comprehensive two-dimensional gas chromatography (GC×GC) by using a simple and consumable-free modulator. This "Do-It-Yourself" interface comprised a 1.0m×0.25mm segment of MTX-5 metallic column and a low-cost DC power supply. Thermal desorption modulation (TDM) was attained using a dual-stage heater-based modulator in a novel segmented-loop configuration. TDM was achieved by alternating analyte trapping and thermal desorption. Former process relied on analyte partition to sorbent phase, while latter explored direct resistive heating...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28107366/comparative-analysis-of-direct-hospital-care-costs-between-aseptic-and-two-stage-septic-knee-revision
#3
Richard Kasch, Sebastian Merk, Grit Assmann, Andreas Lahm, Matthias Napp, Harry Merk, Steffen Flessa
BACKGROUND: The most common intermediate and long-term complications of total knee arthroplasty (TKA) include aseptic and septic failure of prosthetic joints. These complications cause suffering, and their management is expensive. In the future the number of revision TKA will increase, which involves a greater financial burden. Little concrete data about direct costs for aseptic and two-stage septic knee revisions with an in depth-analysis of septic explantation and implantation is available...
2017: PloS One
https://www.readbyqxmd.com/read/28100823/conspicuous-plumage-colours-are-highly-variable
#4
Kaspar Delhey, Beatrice Szecsenyi, Shinichi Nakagawa, Anne Peters
Elaborate ornamental traits are often under directional selection for greater elaboration, which in theory should deplete underlying genetic variation. Despite this, many ornamental traits appear to remain highly variable and how this essential variation is maintained is a key question in evolutionary biology. One way to address this question is to compare differences in intraspecific variability across different types of traits to determine whether high levels of variation are associated with specific trait characteristics...
January 25, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28087891/physical-activity-and-exercise-for-chronic-pain-in-adults-an-overview-of-cochrane-reviews
#5
REVIEW
Louise J Geneen, R Andrew Moore, Clare Clarke, Denis Martin, Lesley A Colvin, Blair H Smith
BACKGROUND: Chronic pain is defined as pain lasting beyond normal tissue healing time, generally taken to be 12 weeks. It contributes to disability, anxiety, depression, sleep disturbances, poor quality of life, and healthcare costs. Chronic pain has a weighted mean prevalence in adults of 20%.For many years, the treatment choice for chronic pain included recommendations for rest and inactivity. However, exercise may have specific benefits in reducing the severity of chronic pain, as well as more general benefits associated with improved overall physical and mental health, and physical functioning...
January 14, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28081276/correlation-and-path-analysis-of-biomass-sorghum-production
#6
T P S Vendruscolo, M A A Barelli, M A S Castrillon, R S da Silva, F T de Oliveira, C L Corrêa, B W Zago, F D Tardin
Sorghum biomass is an interesting raw material for bioenergy production due to its versatility, potential of being a renewable energy source, and low-cost of production. The objective of this study was to evaluate the genetic variability of biomass sorghum genotypes and to estimate genotypic, phenotypic, and environmental correlations, and direct and indirect effects of seven agronomic traits through path analysis. Thirty-four biomass sorghum genotypes and two forage sorghum genotypes were cultivated in a randomized block design with three replicates...
December 23, 2016: Genetics and Molecular Research: GMR
https://www.readbyqxmd.com/read/28078100/asthma-costs-and-social-impact
#7
REVIEW
Carlos Nunes, Ana Margarida Pereira, Mário Morais-Almeida
In recent decades, both asthma prevalence and incidence have been increasing worldwide, not only due to the genetic background, but mainly because of the effect of a wide number of environmental and lifestyle risk factors. In many countries noncommunicable diseases, like asthma, are not yet considered a healthcare priority. This review will analyze and discuss disparities in asthma management in several countries and regions, such as access to healthcare human resources and medications, due to limited financial capacity to develop strategies to control and prevent this chronic disease...
2017: Asthma research and practice
https://www.readbyqxmd.com/read/28068130/victimization-and-depressive-symptomology-in-transgender-adults-the-mediating-role-of-avoidant-coping
#8
Jaclyn M White Hughto, John E Pachankis, Tiara C Willie, Sari L Reisner
Victimization and depressive distress symptoms represent serious and interconnected public health problems facing transgender communities. Avoidant coping is hypothesized to temporarily alleviate the stress of victimization, but has potential long-term mental and behavioral health costs, such as increasing the probability of depressive symptoms. A community sample of 412 transgender adults (M age = 32.7, SD = 12.8) completed a one-time survey capturing multiple forms of victimization (i.e., everyday discrimination, bullying, physical assault by family, verbal harassment by family, childhood sexual abuse, intimate partner violence), avoidant coping, and past-week depressive symptomology...
January 2017: Journal of Counseling Psychology
https://www.readbyqxmd.com/read/28063444/computing-the-non-markovian-coarse-grained-interactions-derived-from-the-mori-zwanzig-formalism-in-molecular-systems-application-to-polymer-melts
#9
Zhen Li, Hee Sun Lee, Eric Darve, George Em Karniadakis
Memory effects are often introduced during coarse-graining of a complex dynamical system. In particular, a generalized Langevin equation (GLE) for the coarse-grained (CG) system arises in the context of Mori-Zwanzig formalism. Upon a pairwise decomposition, GLE can be reformulated into its pairwise version, i.e., non-Markovian dissipative particle dynamics (DPD). GLE models the dynamics of a single coarse particle, while DPD considers the dynamics of many interacting CG particles, with both CG systems governed by non-Markovian interactions...
January 7, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28059775/design-and-energetic-evaluation-of-a-prosthetic-knee-joint-actuator-with-a-lockable-parallel-spring
#10
Joost Geeroms, Louis Flynn, Rene Enrique Jimenez Fabian, Bram Vanderborght, Dirk Lefeber
There are disadvantages to existing damping knee prostheses which cause an asymmetric gait and higher metabolic cost during level walking compared to non-amputees. Most existing active knee prostheses which could benefit the amputees use a significant amount of energy and require a considerable motor. In this work, a novel semi-active actuator with a lockable parallel spring for a prosthetic knee joint has been developed and tested. This actuator is able to provide an approximation of the behavior of a healthy knee during most of the gait cycle of level walking...
January 6, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28056902/an-objective-and-cross-sectional-examination-of-sun-safe-behaviours-in-new-south-wales-primary-schools
#11
Dean A Dudley, Wayne G Cotton, Matthew J Winslade, Bradley J Wright, Kirsten S Jackson, Alexandra M Brown, Vanessa Rock
BACKGROUND: Previous evaluations have supported the link between sun protection policies and improved sun protection behaviours. However these evaluations have relied on self-reported data. METHODS: A cross-sectional design as part of an ongoing 18-month cluster-controlled trial in primary schools (n = 20) was used. Researchers conducted direct observations to record students' hat use and teachers' use of sun protective measures during recess and lunch. Researchers also recorded the volume of sunscreen consumed in each school...
January 5, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28056287/-the-fees-of-patients-with-knee-osteoarthritis
#12
K Wang, X Dong, J H Lin
Objective: To assess the cost of illness, the current medication treatment status and health service utilization of patients with knee osteoarthritis (OA). Methods: From January 2014 to May 2015, 250 patients in Arthritis Clinic and Research Center, Peking University People's Hospital were recruited and followed up for 12 months. There were four visits during the follow-up, i. e. baseline, 1, 6 and 12 month. Data on sociodemographic variables, direct cost of illness, medication utilization and health service utilization were obtained by the questionnaire for the analyses...
January 3, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28048813/mo-fg-209-04-dbt-applications-of-feature-adaptive-visual-search-model-oberver
#13
M Das
: This symposium will review recent advances in the simulation methods for evaluation of novel breast imaging systems - the subject of AAPM Task Group TG234. Our focus will be on the various approaches to development and validation of software anthropomorphic phantoms and their use in the statistical assessment of novel imaging systems using such phantoms along with computational models for the x-ray image formation process. Due to the dynamic development and complex design of modern medical imaging systems, the simulation of anatomical structures, image acquisition modalities, and the image perception and analysis offers substantial benefits of reduced cost, duration, and radiation exposure, as well as the known ground-truth and wide variability in simulated anatomies...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048801/su-f-t-39-comparing-nomograms-for-ordering-of-palladium-103-seeds-for-dynamic-intraoperative-prostate-seed-implantation
#14
P Taylor, L Wang, A Riegel
PURPOSE: Several nomograms exist for the purpose of ordering palladium- 103 seeds for permanent prostate seed implants. Excess seeds pose additional radiation safety risks and increase the cost of care. This study compared three seed ordering nomograms with seed counts from dynamic intra-operative PSI to determine (1) the cause of excess seeds and (2) the optimal nomogram for our institution. METHODS: Pre-operative and intra-operative clinical data were collected for 100 Gy (n=151) and 125 Gy (n=224) prostate seed implants...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048735/mo-fg-209-00-recent-advances-in-virtual-tools-for-validation-of-3d-4d-breast-imaging-systems-tg234
#15
Predrag Bakic, Kyle Myers
: This symposium will review recent advances in the simulation methods for evaluation of novel breast imaging systems - the subject of AAPM Task Group TG234. Our focus will be on the various approaches to development and validation of software anthropomorphic phantoms and their use in the statistical assessment of novel imaging systems using such phantoms along with computational models for the x-ray image formation process. Due to the dynamic development and complex design of modern medical imaging systems, the simulation of anatomical structures, image acquisition modalities, and the image perception and analysis offers substantial benefits of reduced cost, duration, and radiation exposure, as well as the known ground-truth and wide variability in simulated anatomies...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048161/mo-fg-209-05-towards-a-feature-based-anthropomorphic-model-observer
#16
A Avanaki
: This symposium will review recent advances in the simulation methods for evaluation of novel breast imaging systems - the subject of AAPM Task Group TG234. Our focus will be on the various approaches to development and validation of software anthropomorphic phantoms and their use in the statistical assessment of novel imaging systems using such phantoms along with computational models for the x-ray image formation process. Due to the dynamic development and complex design of modern medical imaging systems, the simulation of anatomical structures, image acquisition modalities, and the image perception and analysis offers substantial benefits of reduced cost, duration, and radiation exposure, as well as the known ground-truth and wide variability in simulated anatomies...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28048077/mo-fg-209-01-introduction
#17
K Myers
: This symposium will review recent advances in the simulation methods for evaluation of novel breast imaging systems - the subject of AAPM Task Group TG234. Our focus will be on the various approaches to development and validation of software anthropomorphic phantoms and their use in the statistical assessment of novel imaging systems using such phantoms along with computational models for the x-ray image formation process. Due to the dynamic development and complex design of modern medical imaging systems, the simulation of anatomical structures, image acquisition modalities, and the image perception and analysis offers substantial benefits of reduced cost, duration, and radiation exposure, as well as the known ground-truth and wide variability in simulated anatomies...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047936/tu-h-bra-04-a-novel-superconducting-magnet-design-for-optimized-patient-access-and-minimal-ssd-for-use-in-a-linac-mr-hybrid
#18
S Yaghoobpour Tari, K Wachowicz, B Fallone
PURPOSE: A prototype rotating hybrid MR imaging system and linac has been developed to allow for simultaneous imaging and radiation delivery parallel to B0 . However, the design of a compact magnet capable of rotation in a small vault with sufficient patient access and a typical clinical source-to-surface distance (SSD) is challenging. This work presents a novel superconducting magnet design that allows for a reduced SSD and ample patient access by moving the superconducting coils to the side of the yoke...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047419/mo-fg-209-02-development-of-a-virtual-breast-phantom-from-a-multi-modality-perspective
#19
C Graff
: This symposium will review recent advances in the simulation methods for evaluation of novel breast imaging systems - the subject of AAPM Task Group TG234. Our focus will be on the various approaches to development and validation of software anthropomorphic phantoms and their use in the statistical assessment of novel imaging systems using such phantoms along with computational models for the x-ray image formation process. Due to the dynamic development and complex design of modern medical imaging systems, the simulation of anatomical structures, image acquisition modalities, and the image perception and analysis offers substantial benefits of reduced cost, duration, and radiation exposure, as well as the known ground-truth and wide variability in simulated anatomies...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046972/mo-a-201-00-a-cliff-s-notes-version-of-proton-therapy
#20
Jon Kruse
: Proton therapy is a rapidly growing modality in the fight against cancer. From a high-level perspective the process of proton therapy is identical to x-ray based external beam radiotherapy. However, this course is meant to illustrate for x-ray physicists the many differences between x-ray and proton based practices. Unlike in x-ray therapy, proton dose calculations use CT Hounsfield Units (HU) to determine proton stopping power and calculate the range of a beam in a patient. Errors in stopping power dominate the dosimetric uncertainty in the beam direction, while variations in patient position determine uncertainties orthogonal to the beam path...
June 2016: Medical Physics
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