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https://www.readbyqxmd.com/read/28530554/simultaneous-determination-of-fumonisins-b1-and-b2-in-different-types-of-maize-by-matrix-solid-phase-dispersion-and-hplc-ms-ms
#1
Gabriel Barros de Oliveira, Carolyne Menezes de Castro Gomes Vieira, Ricardo Mathias Orlando, Adriana Ferreira Faria
This work involved the optimization and validation of a method, according to Directive 2002/657/EC and the Analytical Quality Assurance Manual of Ministério da Agricultura, Pecuária e Abastecimento, Brazil, for simultaneous extraction and determination of fumonisins B1 and B2 in maize. The extraction procedure was based on a matrix solid phase dispersion approach, the optimization of which employed a sequence of different factorial designs. A liquid chromatography-tandem mass spectrometry method was developed for determining these analytes using the selected reaction monitoring mode...
October 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28525521/what-is-surgical-grit
#2
Nicholas Pulos, Alexander Y Shin
No abstract text is available yet for this article.
June 2017: Techniques in Hand & Upper Extremity Surgery
https://www.readbyqxmd.com/read/28525263/yellow-and-orange-fluorescent-proteins-with-tryptophan-based-chromophores
#3
Nina G Bozhanova, Mikhail S Baranov, Karen S Sarkisyan, Roman Gritсenko, Konstantin V Mineev, Svetlana V Golodukhina, Nadezhda S Baleeva, Konstantin A Lukyanov, Alexander S Mishin
Rapid development of new microscopy techniques exposed the need for genetically encoded fluorescent tags with special properties. Recent works demonstrated the potential of fluorescent proteins with tryptophan-based chromophores. We applied rational design and random mutagenesis to the monomeric red fluorescent protein FusionRed and found two groups of mutants carrying tryptophan-based chromophore: with yellow (535 nm) or orange (565 nm) emission. On the basis of the properties of proteins, a model synthetic chromophore, and a computational modelling we concluded that the presence of a ketone-containing chromophore in different isomeric forms can explain the observed yellow and orange phenotypes...
May 19, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28511945/low-rates-of-aseptic-tibial-loosening-in-obese-patients-with-use-of-high-viscosity-cement-and-standard-tibial-tray-2-year-minimum-follow-up
#4
David A Crawford, Keith R Berend, Denis Nam, Robert L Barrack, Joanne B Adams, Adolph V Lombardi
BACKGROUND: Total knee arthroplasty is overall a very successful surgery, but complications do occur. These complications include aseptic loosening of the tibial component, and obese patients are among the highest risk group. High-viscosity cement (HVC) has been implicated as a possible cause for aseptic loosening of the tibial component. The purpose of this study was to evaluate the incidence of aseptic loosening of the tibial component in obese patients with the use of HVC and standard tibial tray...
April 22, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28511556/performance-and-digestive-function-of-broiler-chickens-given-grit-in-the-diet
#5
B Svihus, K Itani, K Borg, E C Larsson, R Ao, A Sudubilige, B Fuerjiafu, H Liu, H Hetland, G Sanson, B Kierończyk, M Rawski, D Józefiak
1. A series of experiments were carried out to study the effect of grit on broiler performance, gizzard development and fate of grit in the digestive tract. 2. In Experiment 1, performance, gizzard weight and content of grit in the gizzard of broiler chickens given access to granite-type grit was investigated. In Experiment 2, the effect of grit stones on performance and gizzard development was assessed in diets with or without whole wheat. 3. In Experiment 3, the effect of grit in the form of zeolite, granite or marble on gizzard development and digestive tract grinding and passage was studied in diets with or without whole wheat...
May 17, 2017: British Poultry Science
https://www.readbyqxmd.com/read/28508957/genetic-and-environmental-correlations-between-subjective-wellbeing-and-experience-of-life-events-in-adolescence
#6
Robyn E Wootton, Oliver S P Davis, Abigail L Mottershaw, R Adele H Wang, Claire M A Haworth
Some life events appear heritable due to the genetic influence on related behaviours. Shared genetic influence between negative behaviours and negative life events has previously been established. This study investigated whether subjective wellbeing and positive life events were genetically associated. Participants in the Twins Early Development Study (aged 16.32 ± .68 years) completed subjective wellbeing and life events assessments via two separate studies (overlapping N for wellbeing and life events measures ranged from 3527 to 9350)...
May 16, 2017: European Child & Adolescent Psychiatry
https://www.readbyqxmd.com/read/28499630/effect-of-surface-alkali-based-treatment-of-titanium-implants-on-ability-to-promote-in-vitro-mineralization-and-in-vivo-bone-formation
#7
Winston A Camargo, Shinji Takemoto, Jan Willem Hoekstra, Sander C G Leeuwenburgh, John A Jansen, Jeroen J J P van den Beucken, Hamdan S Alghamdi
This study investigated whether a novel alkali-based surface modification enhances in-vitro mineralization as well as in-vivo bone formation around titanium (Ti) implants in a femoral condyle model of 36 male Wister rats. All implant surfaces were grit-blasted and then received either acid-etching treatment, alkali-based treatment, or were left untreated (controls). Histological and histomorphometrical analyses were performed on retrieved specimens after 4 and 8 weeks of healing to assess peri-implant bone formation...
May 9, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28494273/fatigue-failure-load-of-monolithic-y-tzp-three-unit-fixed-dental-prostheses-effect-of-grinding-at-the-gingival-zone-of-the-connector
#8
Marina Amaral, Regina F Villefort, Renata Marques Melo, Gabriel K R Pereira, Yu Zhang, Luiz Felipe Valandro, Marco Antonio Bottino
OBJECTIVES: To determine the fatigue failure loads of three-unit monolithic zirconia fixed dental prosthesis (FDPs) before and after grinding of the gingival areas of connectors with diamond burs. MATERIAL AND METHODS: FDPs were milled from pre-sintered blocks of zirconia simulating the absence of the first mandibular molar. Half of the specimens were subjected to grinding, simulating clinical adjustment, and all of them were subjected to glazing procedure. Additional specimens were manufactured for roughness analysis...
March 7, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28488006/ingestion-of-a-single-2-3%C3%A2-mm-lead-pellet-by-laying-roller-pigeon-hens-reduces-egg-size-and-adversely-affects-f1-generation-hatchlings
#9
Robert J Williams, Lawrence V Tannenbaum, Susan M Williams, Steven D Holladay, Richard C Tuckfield, Ajay Sharma, Danny Joe Humphrey, Robert M Gogal
Many aquatic and terrestrial avian species inadvertently ingest lead (Pb) in the form of spent or fragmented ammunition, mistaking it for food or grit. Previous studies in our laboratory have shown that ingestion of even a single 45-mg pellet can significantly increase blood-Pb levels and significantly inhibit the enzyme delta aminolevulinic-acid dehydratase (δ-ALAD) for a period of greater than 4 weeks. In the current study, proven breeder pairs of domestic Roller pigeons were housed in individual cages...
May 9, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28473611/operation-everest-ii-and-the-1978-habeler-messner-ascent-of-everest-without-bottled-o2-what-might-they-have-in-common
#10
Peter D Wagner
In 1978, Peter Habeler and Reinhold Messner climbed Everest without supplemental O2 Subsequently, Oelz and coworkers (9) assessed their cardiopulmonary function, finding no advantageous physiological attributes to explain their success, and leading West (18) to suggest that grit and determination were more important. In 1985, Charlie Houston, John Sutton and Al Cymerman hosted a scientific project assessing a simulated ascent of Everest (OE II) at the USARIEM. Included were measurements of O2 transport. In particular, mixed venous PO2 was measured at/near maximal exercise, for calculating pulmonary O2 diffusing capacity...
May 4, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28462009/a-resonance-frequency-analysis-of-sandblasted-and-acid-etched-implants-with-different-diameters-a-prospective-clinical-study-during-the-initial-healing-period
#11
Hyun-Joo Kim, Yeun-Kang Kim, Ji-Young Joo, Ju-Youn Lee
PURPOSE: The possibility of immediate or early loading has become popular in implant dentistry. A prerequisite for the immediate or early loading of an implant prosthesis is the achievement of initial stability in the implant. Moreover, in response to clinicians' interest in verifying clinical stability to determine the optimal time point for functional loading, a non-invasive method to assess implant stability has been developed on the basis of resonance frequency analysis (RFA). The primary objective of this study was to monitor the stability of sandblasted, large-grit, and acid-etched (SLA) implants with different diameters during the early phases of healing by RFA...
April 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28457875/perceived-value-of-a-program-to-promote-surgical-resident-well-being
#12
Arghavan Salles, Cara A Liebert, Micaela Esquivel, Ralph S Greco, Rebecca Henry, Claudia Mueller
OBJECTIVE: The demands of surgical residency are intense and threaten not only trainees' physical wellness, but also risk depression, burnout, and suicide. Our residency program implemented a multifaceted Balance in Life program that is designed to improve residents' well-being. The purpose of this study was to evaluate the program utilization and perceived value by residents. DESIGN, SETTING, PARTICIPANTS: Residents (n = 56, 76% response rate) were invited to participate in a voluntary survey from December 2013 to February 2014 regarding utilization, barriers to use, and perceived value of 6 program components (refrigerator, After Hours Guide, psychological counseling sessions, Resident Mentorship Program, Class Representative System, and social events)...
April 28, 2017: Journal of Surgical Education
https://www.readbyqxmd.com/read/28452335/performance-of-laser-sintered-ti-6al-4v-implants-with-bone-inspired-porosity-and-micro-nanoscale-surface-roughness-in-the-rabbit-femur
#13
David J Cohen, Alice Cheng, Kaan Sahingur, Ryan M Clohessy, Louis B Hopkins, Barbara D Boyan, Zvi Schwartz
Long term success of bone-interfacing implants remains a challenge in compromised patients and in areas of low bone quality. While surface roughness at the micro/nanoscale can promote osteogenesis, macro-scale porosity is important for promoting mechanical stability of the implant over time. Currently, machining techniques permit pores to be placed throughout the implant, but the pores are generally uniform in dimension. The advent of laser sintering provides a way to design and manufacture implants with specific porosity and variable dimensions at high resolution...
April 28, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/28450334/bjgp-library-the-millstone-grit-smoothed-off-after-50-years
#14
Stuart Handysides
No abstract text is available yet for this article.
May 2017: British Journal of General Practice: the Journal of the Royal College of General Practitioners
https://www.readbyqxmd.com/read/28450015/a-comparative-study-of-anthocyanin-distribution-in-purple-and-blue-corn-coproducts-from-three-conventional-fractionation-processes
#15
Qian Li, Pavel Somavat, Vijay Singh, Laura Chatham, Elvira Gonzalez de Mejia
The aim was to compare the distribution of ANCs in purple and blue corn coproducts from three conventional corn fractionation processes and linking ANC partitioning in different coproducts to corn kernel phenotype. Total monomeric anthocyanin (TA) from purple corn extract was 4933.1±43.4mg cyanidin-3-glucoside equivalent per kg dry corn, 10 times more than blue corn. In dry milled purple corn, maximum ANCs were present in the pericarp (45.9% of total ANCs) and in wet-milling they were concentrated in steeping water (79...
September 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28427886/identification-of-excipients-for-stabilizing-fiberless-adenovirus-as-biopharmaceuticals
#16
Grit Kupgan, Shyamal P Choudhari, Nicholas H Flynn, Adane Nigatu, Sravanthi Vupputuri, William D Picking, Wendy L Picking, Joshua D Ramsey
Reducing the promiscuous tropism of native adenovirus by using fiberless adenovirus is advantageous towards its use as a gene therapy vector or vaccine component. The removal of the fiber protein on native adenovirus abrogates several undesirable interactions; however, this approach decreases the particle's physical stability. In order to create stable fiberless adenovirus for pharmaceutical use, the effects of temperature and pH on the particle's stability profile must be addressed. Our results indicate that the stability of fiberless adenovirus is increased when it is stored in mildly acidic conditions around pH 6...
April 17, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28426200/facile-design-and-fabrication-of-superwetting-surfaces-with-excellent-wear-resistance
#17
Wenbo Zhang, Tianhao Xiang, Feng Liu, Ming Zhang, Wentao Gan, Xianglin Zhai, Xin Di, Yazhou Wang, Guoxiang Liu, Chengyu Wang
Preparation of mechanically durable superwetting surfaces is imperative, yet challenging for the wide range of real applications where high durability is required. Mechanical wear on superwetting surfaces usually degrades weak roughness, leading to loss of functions. In this study, wear-resistant superhydrophilic/underwater superoleophobic and superhydrophobic surfaces are prepared by anchoring reinforced coatings via adhesive-swelling and adhesive-bonding processes, respectively. The results of the sandpaper abrasion (grit no...
April 26, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28423755/why-are-children-s-interests-invisible-in-european-national-e-health-strategies
#18
Michael J Rigby, Grit Kühne, Azeem Majeed, Mitch E Blair
Harnessing the power of IT solutions in child primary care requires strategic thought at national level, and good health care delivery needs this support. The aim of this study was to investigate whether children's needs are considered in national e-health strategies in Europe. In 2016, a survey was carried out in all 28 European Member States plus 2 European Economic Area countries. Sixteen countries fail to mention children's needs at all. Only eleven of 27 countries mention children and adolescents in their national e-health strategy documents ranging from mere data protection concerns to comprehensive IT approaches for the improvement of child primary care...
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28423754/towards-safe-and-efficient-child-primary-care-gaps-in-the-use-of-unique-identifiers-in-europe
#19
Grit Kühne, Michael J Rigby, Azeem Majeed, Mitch E Blair
In order to provide for best possible child health care, timely access to all relevant medical data is of vital importance. The aim of this study is to investigate the use of unique identifiers, a key instrument in this regard, in the countries of Europe. A survey was carried out in all 28 European Member States plus 2 European Economic Area countries in 2015, and refreshed in 2016. In 23 countries unique identifiers are used to link children's health records. Five countries indicated they currently do not link child health records, and two have no such plans...
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28416857/compositional-variability-of-nutrients-and-phytochemicals-in-corn-after-processing
#20
P S Prasanthi, N Naveena, M Vishnuvardhana Rao, K Bhaskarachary
The result of various process strategies on the nutrient and phytochemical composition of corn samples were studied. Fresh and cooked baby corn, sweet corn, dent corn and industrially processed and cooked popcorn, corn grits, corn flour and corn flakes were analysed for the determination of proximate, minerals, xanthophylls and phenolic acids content. This study revealed that the proximate composition of popcorn is high compared to the other corn products analyzed while the mineral composition of these maize products showed higher concentration of magnesium, phosphorus, potassium and low concentration of calcium, manganese, zinc, iron, copper, and sodium...
April 2017: Journal of Food Science and Technology
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