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https://www.readbyqxmd.com/read/28822611/dismantling-of-the-diorit-research-reactor-conditioning-of-activated-graphite
#1
Isabel Cecilia Sierra Perler, Hans-Frieder Beer, Joachim Müth, Andreas Kramer
The research reactor DIORIT at the Paul Scherrer Institute was a natural uranium reactor moderated by D2O. It was put in operation in 1960 and finally shut down in August 1977. The dismantling project started in 1982 and could be successfully finished on September 11th, 2012. About 40 tons of activated reactor graphite had to be conditioned during the dismantling of this research reactor. The problem of conditioning of activated reactor graphite had not been solved so far worldwide. Therefore a conditioning method considering radiation protection and economic aspects had to be developed...
August 16, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28820690/scaling-up-of-an-innovative-intervention-to-reduce-risk-of-dengue-chikungunya-and-zika-transmission-in-uruguay-in-the-framework-of-an-intersectoral-approach-with-and-without-community-participation
#2
César Basso, Elsa García da Rosa, Rosario Lairihoy, Ruben M Caffera, Ingrid Roche, Cristina González, Ricardo da Rosa, Alexis Gularte, Eduardo Alfonso-Sierra, Max Petzold, Axel Kroeger, Johannes Sommerfeld
To contribute to the prevention of dengue, chikungunya, and Zika, a process of scaling up an innovative intervention to reduce Aedes aegypti habitats, was carried out in the city of Salto (Uruguay) based on a transdisciplinary analysis of the eco-bio-social determinants. The intervention in one-third of the city included the distributions of plastic bags for all households to collect all discarded water containers that were recollected by the Ministry of Health and the Municipality vector control services. The results were evaluated in 20 randomly assigned clusters of 100 households each, in the intervention and control arm...
August 7, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28820271/cam-deformities-and-limited-hip-range-of-motion-are-associated-with-early-osteoarthritic-changes-in-adolescent-athletes-a-prospective-matched-cohort-study
#3
Cody C Wyles, Germán A Norambuena, Benjamin M Howe, Dirk R Larson, Bruce A Levy, Brandon J Yuan, Robert T Trousdale, Rafael J Sierra
BACKGROUND: The natural history of femoroacetabular impingement (FAI) remains incompletely understood. In particular, there is limited documentation of joint damage in adolescent patients with limited range of motion (LROM) of the hip, which is commonly associated with FAI. PURPOSE: To evaluate changes in magnetic resonance imaging (MRI), radiographs, and clinical examinations over 5 years in a group of athletes from a wide variety of sports with asymptomatic LROM of the hip compared with matched controls...
August 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28819662/chiral-amplification-of-disodium-cromoglycate-chromonics-induced-by-a-codeine-derivative
#4
F Berride, E Troche-Pesqueira, G Feio, E J Cabrita, T Sierra, A Navarro-Vázquez, M M Cid
Chromonic liquid crystals (CLC) are lyotropic phases formed by discotic mesogens in water. Simple chiral dopants such as amino acids have been reported to turn chromonic liquid crystals into their cholesteric counterparts. Here we report a chirality amplification effect in the nematic phase of a 9 wt% disodium cromoglycate (DSCG) lyotropic liquid crystal (LLC) upon doping with a water-soluble codeine derivative. The transition on cooling the isotropic to the nematic phase showed the presence of homochiral spindle-shaped droplets (tactoids)...
August 18, 2017: Soft Matter
https://www.readbyqxmd.com/read/28818026/herpesviral-infection-in-a-guiana-dolphin-sotalia-guianensis-from-the-northern-coast-of-brazil
#5
Gisele C C Seade, Valíria D Cerqueira, Eva Sierra, Jaese F Chaves, Márcio A O Moura, Daniele P Montão, Gabriela Riet-Correa, Carlos A Oliveira, Salvatore Siciliano, Renata Emin-Lima, Alexandra Fernandes Costa, Antonio Fernández, Pedro S Bezerra Júnior
We describe herein herpesvirus-associated genital lesions in a Guiana dolphin ( Sotalia guianensis) from the northern Brazilian coast. Papillary lesions on the vulva, with epithelial hyperplasia, swollen keratinocytes, and intranuclear inclusions, were positive for a herpesvirus ( Gammaherpesvirinae subfamily).
August 1, 2017: Journal of Veterinary Diagnostic Investigation
https://www.readbyqxmd.com/read/28815959/twentieth-anniversary-of-homo-antecessor-1997-2017-a-review
#6
José María Bermúdez de Castro, María Martinón-Torres, Juan Luis Arsuaga, Eudald Carbonell
It has been twenty years since diagnosis and publication of the species Homo antecessor.(1) Since then, new human fossils recovered from the TD6 level of the Gran Dolina site (Sierra de Atapuerca, northern Spain) have helped to refine its taxonomic and phylogenetic position. In this paper, we present a synthesis of the most characteristic features of this species, as well as our interpretation derived from the latest investigations. We focus on the phylogenetic interpretation of Homo antecessor, taking into account the most recent paleogenetic analyses and a reassessment of the European Middle Pleistocene hominin record...
July 2017: Evolutionary Anthropology
https://www.readbyqxmd.com/read/28811110/characterizing-the-diagnosis-and-treatment-of-allergic-contact-dermatitis-to-2-octyl-cyanoacrylate-used-for-skin-closure-in-elective-orthopedic-surgery
#7
Brian P Chalmers, Heath P Melugin, Peter K Sculco, Jennifer J Schoch, Rafael J Sierra, Mark W Pagnano, Michael J Stuart, Michael J Taunton
BACKGROUND: While studies have shown that postoperative wound complications can predispose to deep infection following orthopedic surgery, the best form of skin closure has not been elucidated. Furthermore, the unique risks and benefits of each type of wound closure have not been studied. The goal of this study is to present the diagnosis and treatment of patients with allergic contact dermatitis (ACD) from 2-octyl cyanoacrylate, a skin adhesive commonly used in wound closure. METHODS: Twenty-nine patients with ACD to 2-octyl cyanoacrylate (Prineo, Ethicon, NJ) following elective orthopedic surgeries from 2013 to 2016 were retrospectively reviewed; this occurred in 29 of 6088 units of Prineo used at our institution, for an estimated incidence of 0...
July 18, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28810081/a-risk-analysis-approach-to-prioritizing-epidemics-ebola-virus-disease-in-west-africa-as-a-case-study
#8
Whenayon Simeon Ajisegiri, Abrar Ahmad Chughtai, C Raina MacIntyre
The 2014 Ebola virus disease (EVD) outbreak affected several countries worldwide, including six West African countries. It was the largest Ebola epidemic in the history and the first to affect multiple countries simultaneously. Significant national and international delay in response to the epidemic resulted in 28,652 cases and 11,325 deaths. The aim of this study was to develop a risk analysis framework to prioritize rapid response for situations of high risk. Based on findings from the literature, sociodemographic features of the affected countries, and documented epidemic data, a risk scoring framework using 18 criteria was developed...
August 15, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28807285/sarcoptes-scabiei-alters-follicular-dynamics-in-female-iberian-ibex-through-a-reduction-in-body-weight
#9
José Espinosa, José E Granados, Francisco J Cano-Manuel, Jorge R López-Olvera, Arián Ráez-Bravo, Diego Romero, Ramón C Soriguer, Jesús M Pérez, Paulino Fandos
Normal development of the ovarian cycle is a key factor in ensuring female reproductive success. Sarcoptes scabiei has been shown to induce changes in host physiology, although the effects of this mite on the female reproductive cycle are still unknown. In an attempt to clarify this issue, the number of ovarian structures (primary follicles, secondary follicles, Graaf follicles, corpus luteum and corpus albicans) in female Iberian ibex (Capra pyrenaica) affected by sarcoptic mange was explored by histological analysis of samples taken from 102 females selectively harvested in the Sierra Nevada Natural Space, southern Spain...
August 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28803149/concentrations-of-polycyclic-aromatic-hydrocarbons-and-trace-elements-in-arctic-soils-a-case-study-in-svalbard
#10
Montse Marquès, Jordi Sierra, Tatiana Drotikova, Montse Mari, Martí Nadal, José L Domingo
A combined assessment on the levels and distribution profiles of polycyclic aromatic hydrocarbons (PAHs) and trace elements in soils from Pyramiden (Central Spitsbergen, Svalbard Archipelago) is here reported. As previously stated, long-range atmospheric transport, coal deposits and previous mining extractions, as well as the stack emissions of two operative power plants at this settlement are considered as potential sources of pollution. Eight top-layer soil samples were collected and analysed for the 16 US EPA priority PAHs and for 15 trace elements (As, Be, Cd, Co, Cr, Cu, Hg, Mn, Mo, Ni, Pb, Sn, Tl, V and Zn) during late summer of 2014...
August 10, 2017: Environmental Research
https://www.readbyqxmd.com/read/28801080/reprint-of-anticancer-activity-of-hydroxy-and-sulfonamide-azobenzene-platinum-ii-complexes-in-cisplatin-resistant-ovarian-cancer-cells
#11
Katia G Samper, Sierra C Marker, Pau Bayón, Samantha N MacMillan, Ivan Keresztes, Òscar Palacios, Justin J Wilson
The syntheses of three platinum(II) complexes bearing sulfonamide-((E)-2-(4-methylphenylsulfonamido)-2',6'-difluoroazobenzene, HL1) and hydroxy-azo-2,6-difluorobenzene ((E)-2-((2,6-difluorophenyl)diazenyl)phenol, HL2) bidentate ligands is described. These complexes, [Pt(L1)(DMSO)Cl] (1), [Pt(L2)(DMSO)Cl] (2), and [Pt(L2)2] (3), were characterized by multinuclear NMR spectroscopy, mass spectrometry, and X-ray crystallography. Despite bearing azobenzene functional groups, none of the three complexes undergo photoisomerization...
August 8, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28799681/genomic-and-clinical-evidence-uncovers-the-enterohepatic-species-helicobacter-valdiviensis-as-a-potential-human-intestinal-pathogen
#12
Pablo Fresia, Ronald Jara, Rafael Sierra, Ignacio Ferrés, Gonzalo Greif, Gregorio Iraola, Luis Collado
BACKGROUND: Helicobacter valdiviensis is a recently described enterohepatic species isolated from wild bird's fecal samples. Currently, its pathogenic potential and clinical significance are unknown mainly due to the lack of whole-genome sequences to compare with other helicobacters and the absence of specific screenings to determine its prevalence in humans. MATERIALS AND METHODS: The species type strain (WBE14(T) ) was whole-genome-sequenced, and comparative analyses were carried out including the genomes from other Helicobacter species to determine the exact phylogenetic position of H...
August 11, 2017: Helicobacter
https://www.readbyqxmd.com/read/28797317/where-there-is-no-ems-lay-providers-in-emergency-medical-services-care-ems-as-a-public-health-priority
#13
Sierra Debenham, Matthew Fuller, Matthew Stewart, Raymond R Price
By 2030, road traffic accidents are projected to be the fifth leading cause of death worldwide, with 90% of these deaths occurring in low- and middle-income countries (LMICs). While high-quality, prehospital trauma care is crucial to reduce the number of trauma-related deaths, effective Emergency Medical Systems (EMS) are limited or absent in many LMICs. Although lay providers have long been recognized as the front lines of informal trauma care in countries without formal EMS, few efforts have been made to capitalize on these networks...
August 11, 2017: Prehospital and Disaster Medicine
https://www.readbyqxmd.com/read/28783227/safety-productivity-and-predicted-contribution-of-a-surgical-task-sharing-programme-in-sierra-leone
#14
H A Bolkan, A van Duinen, B Waalewijn, M Elhassein, T B Kamara, G F Deen, I Bundu, B Ystgaard, J von Schreeb, A Wibe
BACKGROUND: Surgical task-sharing may be central to expanding the provision of surgical care in low-resource settings. The aims of this paper were to describe the set-up of a new surgical task-sharing training programme for associate clinicians and junior doctors in Sierra Leone, assess its productivity and safety, and estimate its future role in contributing to surgical volume. METHODS: This prospective observational study from a consortium of 16 hospitals evaluated crude in-hospital mortality over 5 years and productivity of operations performed during and after completion of a 3-year surgical training programme...
September 2017: British Journal of Surgery
https://www.readbyqxmd.com/read/28783066/utility-of-milk-coagulant-enzyme-of-moringa-oleifera-seed-in-cheese-production-from-soy-and-skim-milks
#15
María Alejandra Sánchez-Muñoz, Mónica Andrea Valdez-Solana, Claudia Avitia-Domínguez, Patricia Ramírez-Baca, María Guadalupe Candelas-Cadillo, Miguel Aguilera-Ortíz, Jorge Armando Meza-Velázquez, Alfredo Téllez-Valencia, Erick Sierra-Campos
In this study, the potential use of Moringa oleifera as a clotting agent of different types of milk (whole, skim, and soy milk) was investigated. M. oleifera seed extract showed high milk-clotting activity followed by flower extract. Specific clotting activity of seed extract was 200 times higher than that of flower extract. Seed extract is composed by four main protein bands (43.6, 32.2, 19.4, and 16.3 kDa). Caseinolytic activity assessed by sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) and tyrosine quantification, showed a high extent of casein degradation using M...
August 5, 2017: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/28773091/a-parametric-model-of-the-larcodems-heavy-media-separator-by-means-of-multivariate-adaptive-regression-splines
#16
Mario Menéndez Álvarez, Héctor Muñiz Sierra, Fernando Sánchez Lasheras, Francisco Javier de Cos Juez
Modeling of a cylindrical heavy media separator has been conducted in order to predict its optimum operating parameters. As far as it is known by the authors, this is the first application in the literature. The aim of the present research is to predict the separation efficiency based on the adjustment of the device's dimensions and media flow rates. A variety of heavy media separators exist that are extensively used to separate particles by density. There is a growing importance in their application in the recycling sector...
June 30, 2017: Materials
https://www.readbyqxmd.com/read/28772804/osteoblast-cell-response-on-the-ti6al4v-alloy-heat-treated
#17
Mercedes Paulina Chávez-Díaz, María Lorenza Escudero-Rincón, Elsa Miriam Arce-Estrada, Román Cabrera-Sierra
In an effort to examine the effect of the microstructural changes of the Ti6Al4V alloy, two heat treatments were carried out below (Ti6Al4V800) and above (Ti6Al4V1050) its β-phase transformation temperature. After each treatment, globular and lamellar microstructures were obtained. Saos-2 pre-osteoblast human osteosarcoma cells were seeded onto Ti6Al4V alloy disks and immersed in cell culture for 7 days. Electrochemical assays in situ were performed using OCP and EIS measurements. Impedance data show a passive behavior for the three Ti6Al4V alloys; additionally, enhanced impedance values were recorded for Ti6Al4V800 and Ti6Al4V1050 alloys...
April 23, 2017: Materials
https://www.readbyqxmd.com/read/28771229/autophagy-couteracts-weight-gain-lipotoxicity-and-pancreatic-%C3%AE-cell-death-upon-hypercaloric-pro-diabetic-regimens
#18
Álvaro F Fernández, Clea Bárcena, Gemma G Martínez-García, Isaac Tamargo-Gómez, María F Suárez, Federico Pietrocola, Francesca Castoldi, Lorena Esteban, Elena Sierra-Filardi, Patricia Boya, Carlos López-Otín, Guido Kroemer, Guillermo Mariño
In the last years, autophagy has been revealed as an essential pathway for multiple biological processes and physiological functions. As a catabolic route, autophagy regulation by nutrient availability has been evolutionarily conserved from yeast to mammals. On one hand, autophagy induction by starvation is associated with a significant loss in body weight in mice. Here, we demonstrate that both genetic and pharmacological inhibition of the autophagy process compromise weight loss induced by starvation. Moreover, autophagic potential also impacts on weight gain induced by distinct hypercaloric regimens...
August 3, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28769951/biogeochemical-and-ecomorphological-niche-segregation-of-mediterranean-woody-species-along-a-local-gradient
#19
Enrique G de la Riva, Teodoro Marañón, Cyrille Violle, Rafael Villar, Ignacio M Pérez-Ramos
According with niche theory the species are specialized in different ecological niches, being able to coexist as result of a differential use of resources. In this context, the biogeochemical niche hypothesis proposes that species have an optimal elemental composition which results from the link between the chemical and morphological traits for the optimum plant functioning. Thus, and attending to the limiting similarity concept, different elemental composition and plant structure among co-occurring species may reduce competition, promoting different functional niches...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28769705/a-new-species-of-the-genus-parachemmis-chickering-1937-from-colombia-araneae-corinnidae-corinninae
#20
Leonel Martinez, Eduardo Villarreal, Neis Martinez
The spider genus Parachemmis Chickering, 1937 (Araneae: Corinnidae: Corinninae) is reported from Colombia for the first time. Parachemmis julioblancoisp. n. Martinez-G & Villarreal is described and illustrated from the Sierra Nevada de Santa Marta, Magdalena department. The exclusive morphology of the short and apically truncated retrolateral tibial apophysis and club-like tegular laminar process of the male palp indicates that the specimens described herein belong to a new species of Parachemmis. A map of the distribution of species in the genus is included...
2017: ZooKeys
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