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https://www.readbyqxmd.com/read/28514898/assessment-of-cryosurgical-device-performance-using-a-3d-tissue-engineered-cancer-model
#1
John M Baust, Anthony Robilotto, Kristi K Snyder, Kimberly Santucci, Jennie Stewart, Robert Van Buskirk, John G Baust
As the clinical use of cryoablation for the treatment of cancer has increased, so too has the need for knowledge on the dynamic environment within the frozen mass created by a cryoprobe. While a number of factors exist, an understanding of the iceball size, critical isotherm distribution/penetration, and the resultant lethal zone created by a cryoprobe are critical for clinical application. To this end, cryoprobe performance is typically characterized based on the iceball size and temperature penetration in phantom gel models...
January 1, 2017: Technology in Cancer Research & Treatment
https://www.readbyqxmd.com/read/28513289/detection-of-meat-species-adulteration-using-high-resolution-mass-spectrometry-and-a-proteogenomics-strategy
#2
Alberto Ruiz Orduna, Erik Husby, Charles T Yang, Dipankar Ghosh, Francis Beaudry
Due to the internationalization of food production and distribution, there has been a significant increase of food fraud in recent years. Food fraud can have serious health implications, and occurs when food manufacturers implement unethical practices such as making false label claims as well as using additives and fillers within their products to increase profitability. This has been a serious concern. Meat adulteration was examined using a well-defined proteogenomic annotation, carefully selected surrogate tryptic peptides and high-resolution mass spectrometry...
May 17, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28511057/mapping-smokeless-powder-residue-on-pvc-pipe-bomb-fragments-using-total-vaporization-solid-phase-microextraction
#3
Dana Bors, John Goodpaster
Quantitating post-blast explosive residue is not a common practice in crime labs as it is typically not legally relevant. There is value in quantitation, however, if the distribution of residues on Improvised Explosive Devices (IEDs) can help guide future sample collection and/or method development. Total vaporization solid phase microextraction gas chromatography mass spectrometry (TV-SPME/GC/MS) was used to quantify residues of double-base smokeless powder (DBSP), which includes nitroglycerin (NG), diphenylamine (DPA), and ethyl centralite (EC) on post-blast PVC pipe bomb fragments...
April 14, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28485319/dynamic-change-of-red-cell-distribution-width-levels-in-prediction-of-hospital-mortality-in-chinese-elderly-patients-with-septic-shock
#4
Xue-Feng Ju, Fei Wang, Li Wang, Xiao Wu, Ting-Ting Jiang, Da-Li You, Bing-Hua Yang, Jian-Jun Xia, Shan-You Hu
BACKGROUND: The normal range of red cell distribution width (RDW) level is <15%. Several studies have indicated that a high RDW level was associated with mortality in critically ill patients, and the patients with a high RDW level need increased focus in clinical practice. In view of the difficulty in defining the specific value of high RDW level, the key is to focus on the patient with the level beyond the normal upper limit. This study aimed to determine whether dynamic change of RDW levels, rather than the level itself, is predictive of death in elderly patients with septic shock when RDW level is beyond 15%...
May 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28475651/pharmacokinetic-modeling-of-gentamicin-in-treatment-of-infective-endocarditis-model-development-and-validation-of-existing-models
#5
Anna Gomes, Lars van der Wijk, Johannes H Proost, Bhanu Sinha, Daan J Touw
Gentamicin shows large variations in half-life and volume of distribution (Vd) within and between individuals. Thus, monitoring and accurately predicting serum levels are required to optimize effectiveness and minimize toxicity. Currently, two population pharmacokinetic models are applied for predicting gentamicin doses in adults. For endocarditis patients the optimal model is unknown. We aimed at: 1) creating an optimal model for endocarditis patients; and 2) assessing whether the endocarditis and existing models can accurately predict serum levels...
2017: PloS One
https://www.readbyqxmd.com/read/28474288/could-lymphocyte-profiling-be-useful-to-diagnose-systemic-autoimmune-diseases
#6
REVIEW
Guillermo Carvajal Alegria, Pierre Gazeau, Sophie Hillion, Claire I Daïen, Divi Y K Cornec
Considering the implications of B, T, and natural killer (NK) cells in the pathophysiology of systemic autoimmune diseases, the assessment of their distribution in the blood could be helpful for physicians in the complex process of determining a precise diagnosis. In primary Sjögren's syndrome, transitional and active naive B cells are increased and memory B cells are decreased compared to healthy controls and other systemic diseases. However, their utility to improve the accuracy of classification criteria has not been proven...
May 4, 2017: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/28443941/knowledge-attitudes-and-perceptions-regarding-lymphatic-filariasis-study-on-systematic-noncompliance-with-mass-drug-administration
#7
Silvia Cabral, Cristine Bonfim, Rosalira Oliveira, Paula Oliveira, Terezinha Guimarães, Eduardo Brandão, Ana Maria Aguiar-Santos, Zulma Medeiros
The aim of this study was to investigate the epidemiological characteristics, antigenic profile, perceptions, attitudes and practices of individuals who have been systematically non-compliant in mass drug administration (MDA) campaigns targeting lymphatic filariasis, in the municipality of Olinda, State of Pernambuco, Northeastern Brazil. A pretested questionnaire was used to obtain information on socioenvironmental demographics, perceptions of lymphatic filariasis and MDA, and reasons for systematic noncompliance with treatment...
April 20, 2017: Revista do Instituto de Medicina Tropical de São Paulo
https://www.readbyqxmd.com/read/28435553/prevalence-and-associated-factors-of-musculoskeletal-disorders-among-young-dentists-in-indonesia
#8
P Phedy, L Gatam
Introduction: Musculoskeletal problems are often work related. Dentists have been reported to have a high prevalence of musculoskeletal problems. Dentists have to perform repetitive tasks, often in awkward and nonergonomic positions in their practice. Materials and Methods: This is a cross-sectional study. Five-hundred copies of Nordic Musculoskeletal Questionnaire were distributed to dentists who participated in a congress of a regional branch of the Indonesian Dentist Association. Data such as sex, length of practice, the presence of assistance, smoking, occupational stress, body mass index, hand dominance, and exercise were collected...
July 2016: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/28395343/the-generation-rate-of-respirable-dust-from-cutting-fiber-cement-siding-using-different-tools
#9
Chaolong Qi, Alan Echt, Michael G Gressel
This article describes the evaluation of the generation rate of respirable dust (GAPS, defined as the mass of respirable dust generated per unit linear length cut) from cutting fiber cement siding using different tools in a laboratory testing system. We used an aerodynamic particle sizer spectrometer (APS) to continuously monitor the real-time size distributions of the dust throughout cutting tests when using a variety of tools, and calculated the generation rate of respirable dust for each testing condition using the size distribution data...
March 1, 2017: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/28391999/trends-in-management-of-the-small-renal-mass-in-renal-transplant-recipient-candidates-a-multi-institutional-survey-analysis
#10
Alp Tuna Beksac, David J Paulucci, John P Sfakianos, Balaji N Reddy, Greg E Gin, Susan M Lerner, Ketan K Badani
INTRODUCTION: Patients with end-stage renal disease are under increased risk for renal cell carcinoma development, and radical nephrectomy is the preferred treatment in this setting. Owing to the increased surgical morbidity and mortality, active surveillance (AS) may be a valid option for treatment of small renal masses (SRM). As there is a lack of high-level evidence for treatment recommendations, we performed a survey analysis to analyze the treatment patterns of transplant surgeons...
April 5, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28374728/-characteristic-of-the-normal-values-of-the-pain-threshold-values-in-the-dorsal-region-of-the-young-women-obtained-by-the-pressure-algometry-method-under-different-condition
#11
P V Kondrashkin, D Z Shibkova, E I Tolstykh
The application of modern techniques for different types of massage and manual therapy is associated with the exposure of the paravetrebral points. The knowledge of pain threshold values at these points is of great practical significance. AIM: The objective of the present study was to obtain the statistical characteristics of the individual pressure pain threshold (PPT) for the healthy women and patients presenting with minor disturbances of spinal motion segments (SMS) at the trigger points on the back...
2017: Voprosy Kurortologii, Fizioterapii, i Lechebnoĭ Fizicheskoĭ Kultury
https://www.readbyqxmd.com/read/28365763/the-effect-of-nest-box-distribution-on-sustainable-propagation-of-osmia-lignaria-hymenoptera-megachilidae-in-commercial-tart-cherry-orchards
#12
N K Boyle, T L Pitts-Singer
The blue orchard bee, Osmia lignaria (Say), is a solitary bee that is an excellent pollinator of tree fruit orchards. Due to the annual rising costs of honey bee hive rentals, many orchardists are eager to develop management tools and practices to support O. lignaria as an alternative pollinator. Establishing O. lignaria pollination as a sustainable industry requires careful consideration of both bee and orchard management. Here, we test the effect of artificial nest box distribution on in-orchard propagation of O...
January 1, 2017: Journal of Insect Science
https://www.readbyqxmd.com/read/28361600/application-of-drifts-13-c-nmr-and-py-mbms-to-characterize-the-effects-of-soil-science-oxidation-assays-on-soil-organic-matter-composition-in-a-mollic-xerofluvent
#13
Andrew J Margenot, Francisco J Calderón, Kimberly A Magrini, Robert J Evans
Chemical oxidations are routinely employed in soil science to study soil organic matter (SOM), and their interpretation could be improved by characterizing oxidation effects on SOM composition with spectroscopy. We investigated the effects of routinely employed oxidants on SOM composition in a Mollic Xerofluvent representative of intensively managed agricultural soils in the California Central Valley. Soil samples were subjected to oxidation by potassium permanganate (KMnO4), sodium hypochlorite (NaOCl), and hydrogen peroxide (H2O2)...
January 1, 2017: Applied Spectroscopy
https://www.readbyqxmd.com/read/28343882/a-contemporary-description-of-french-newborns-growth-using-the-efemeris-cohort
#14
A-B Beau, M Tauber, C Chollet, C Hurault-Delarue, C Bouilhac, J-L Montastruc, I Lacroix, C Damase-Michel
BACKGROUND: Overweight and obesity in childhood are a major concern in developed countries. Reference growth curves are used in current practice to identify children at risk, especially at risk of overweight or obesity. National reference growth curves were published 35 years ago from children born in the 1950s to study growth from birth to adulthood. Additionally, more recent national curves exist to study birth weight and height according to gestational age. The primary objective was to describe anthropometric measurements of French children born in the 2000s and to compare them with the French references...
May 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28339461/mass-elevation-and-lee-effects-markedly-lift-the-elevational-distribution-of-ground-beetles-in-the-himalaya-tibet-orogen
#15
Joachim Schmidt, Jürgen Böhner, Roland Brandl, Lars Opgenoorth
Mass elevation and lee effects markedly influence snow lines and tree lines in high mountain systems. However, their impact on other phenomena or groups of organisms has not yet been quantified. Here we quantitatively studied their influence in the Himalaya-Tibet orogen on the distribution of ground beetles as model organisms, specifically whether the ground beetle distribution increases from the outer to the inner parts of the orogen, against latitudinal effects. We also tested whether July temperature and solar radiation are predictors of the beetle's elevational distribution ranges...
2017: PloS One
https://www.readbyqxmd.com/read/28336137/an-ultra-sensitive-method-for-the-analysis-of-perfluorinated-alkyl-acids-in-drinking-water-using-a-column-switching-high-performance-liquid-chromatography-tandem-mass-spectrometry
#16
Kavitha Dasu, Shoji F Nakayama, Mitsuha Yoshikane, Marc A Mills, J Michael Wright, Shelley Ehrlich
In epidemiological research, it has become increasingly important to assess subjects' exposure to different classes of chemicals in multiple environmental media. It is a common practice to aliquot limited volumes of samples into smaller quantities for specific trace level chemical analyses. A novel method was developed for the determination of 14 perfluorinated alkyl acids (PFAAs) in small volumes (10mL) of drinking water using off-line solid phase extraction (SPE) pre-treatment followed by on-line pre-concentration on a WAX column before analysis on column-switching high performance liquid chromatography tandem mass spectrometry (HPLC-MS/MS)...
April 21, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28325973/building-a-database-for-long-term-monitoring-of-benthic-macrofauna-in-the-pertuis-charentais-2004-2014
#17
Anne S Philippe, Christine Plumejeaud-Perreau, Jérôme Jourde, Philippe Pineau, Nicolas Lachaussée, Emmanuel Joyeux, Frédéric Corre, Philippe Delaporte, Pierrick Bocher
BACKGROUND: Long-term benthic monitoring is rewarding in terms of science, but labour-intensive, whether in the field, the laboratory, or behind the computer. Building and managing databases require multiple skills, including consistency over time as well as organisation via a systematic approach. Here, we introduce and share our spatially explicit benthic database, comprising 11 years of benthic data. It is the result of intensive benthic sampling that has been conducted on a regular grid (259 stations) covering the intertidal mudflats of the Pertuis-Charentais (Marennes-Oléron Bay and Aiguillon Bay)...
2017: Biodiversity Data Journal
https://www.readbyqxmd.com/read/28317167/semiparametric-methods-for-estimation-of-a-nonlinear-exposure-outcome-relationship-using-instrumental-variables-with-application-to-mendelian-randomization
#18
James R Staley, Stephen Burgess
Mendelian randomization, the use of genetic variants as instrumental variables (IV), can test for and estimate the causal effect of an exposure on an outcome. Most IV methods assume that the function relating the exposure to the expected value of the outcome (the exposure-outcome relationship) is linear. However, in practice, this assumption may not hold. Indeed, often the primary question of interest is to assess the shape of this relationship. We present two novel IV methods for investigating the shape of the exposure-outcome relationship: a fractional polynomial method and a piecewise linear method...
May 2017: Genetic Epidemiology
https://www.readbyqxmd.com/read/28257477/wealth-household-heterogeneity-and-livelihood-diversification-of-fulani-pastoralists-in-the-kachia-grazing-reserve-northern-nigeria-during-a-period-of-social-transition
#19
Marie J Ducrotoy, Crawford W Revie, Alexandra P M Shaw, Usman B Musa, Wilson J Bertu, Amahyel M Gusi, Reuben A Ocholi, Ayodele O Majekodunmi, Susan C Welburn
BACKGROUND: A mixed methods study was undertaken in the Kachia Grazing Reserve of northern Nigeria. Surveys in March, June and October 2011 included focus group discussions, key informant and in-depth household interviews, concerning livelihood practices, animal health, ownership, and productivity. In May 2011, 249 Fulani families fleeing post-election violence entered the reserve with their livestock, increasing the number of households by one third. RESULTS: Despite being settled within a grazing reserve, over half of households sent all their cattle away on seasonal transhumance and another third sent some away...
2017: PloS One
https://www.readbyqxmd.com/read/28236459/k-targeted-strategy-for-isolation-of-phenolic-alkaloids-of-nelumbo-nucifera-gaertn-by-counter-current-chromatography-using-lysine-as-a-ph-regulator
#20
Yanyan Wang, Lihong Zhang, Hui Zhou, Xiuyun Guo, Shihua Wu
Counter-current chromatography (CCC) is an efficient liquid-liquid partition chromatography technique without support matrix. Despite there are many significant advancements in the CCC separation of natural products especially for non-ionic neutral compounds, CCC isolation of ionic compounds including alkaloids is still a challenging process guide by classical partition coefficients (K) or distribution ratio (KC) because their partition coefficient could not be equal to distribution ratio in common ionic conditions...
March 24, 2017: Journal of Chromatography. A
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