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Axel Kramer, Daniel Over, Patrick Stoller, Thomas A Paul
Novel dielectric insulation gases used as alternatives to sulfur hexafluoride in gas-insulated switchgear (GIS) include several mixtures containing fluorinated organic compounds. We developed a fiber-optic analyzer enabling concentration measurement of fluoroketones used in medium- and high-voltage switchgear applications by ABB, with concurrent compensation of disturbing effects caused by dust and dirt. The sensor enables measurements in GIS and even in operating high-voltage circuit breakers. The online availability of concentration readings of fluoroketones is important for development tests, but can also be applied for monitoring or diagnostics of field installations...
May 20, 2017: Applied Optics
Daniel J Heath, James A Grant-Jacob, Matthias Feinaeugle, Ben Mills, Robert W Eason
We present the use of digital micromirror devices as variable illumination masks for pitch-splitting multiple exposures to laser machine the surfaces of materials. Ultrafast laser pulses of length 150 fs and 800 nm central wavelength were used for the sequential machining of contiguous patterns on the surface of samples in order to build up complex structures with sub-diffraction limit features. Machined patterns of tens to hundreds of micrometers in lateral dimensions with feature separations as low as 270 nm were produced in electroless nickel on an optical setup diffraction limited to 727 nm, showing a reduction factor below the Abbe diffraction limit of ∼2...
August 1, 2017: Applied Optics
Kariuki Samwel Muiruri, Anne Britt, Nelson Onzere Amugune, Edward Nguu, Simon Chan, Leena Tripathi
Cultivated bananas (Musa spp.) have undergone domestication patterns involving crosses of wild progenitors followed by long periods of clonal propagation. Majority of cultivated bananas are polyploids with different constitutive subgenomes and knowledge on phylogenies to their progenitors at the species and subspecies levels is essential. Here, the mitochondrial (NAD1) and nuclear (CENH3) markers were used to phylogenetically position cultivated banana genotypes to diploid progenitors. The CENH3 nuclear marker was used to identify a minimum representative haplotype number in polyploids and diploid bananas based on single nucleotide polymorphisms...
October 1, 2017: Genome Biology and Evolution
Petra Adebäck, Abbe Schulman, Doris Nilsson
BACKGROUND: There is a need for studies that follow up children and adolescents for many years post disaster since earlier studies have shown that exposure during natural disasters constitutes a risk factor for poor psychological health. AIMS: The main aim was to examine whether there was an association between severity of exposures during a natural disaster experienced in childhood or adolescence and posttraumatic stress symptoms, psychological distress, self-rated health, diagnosis of depression, anxiety or worry, thoughts about or attempted suicide, physical symptoms or daily functioning eight years later in young adulthood...
October 9, 2017: Nordic Journal of Psychiatry
Ahlem Mansouri, Chiraz Abbes, Ahmed Landoulsi
In this work, we have shown for the first time that Microbacterium maritypicum CB7 bacterium is capable to use Benzo(a)Pyrene as a sole source of carbon and energy. We followed the growth kinetics of M. maritypicum CB7 in minimum medium supplemented with 10 mg/l Benzo(a)Pyrene for 30 days. The results obtained showed that M. maritypicum CB7 strain is able to degrade 69% of the initial amount of BaP. In order to improve the rate of biodegradation, we tested for 5 days the effect of a static magnetic field (SMF) at different inductions (50, 100 and 200 mT) on the degradation kinetics of Benzo(a)Pyrene by M...
October 4, 2017: Microbial Pathogenesis
Anna Marie Roos
Martin Folkes (1690-1754) was Newton's protégé, an English antiquary, mathematician, numismatist and astronomer who would in the latter part of his career become simultaneously president of the Royal Society and of the Society of Antiquaries. Folkes took a Grand Tour from March 1733 to September 1735, recording the Italian leg of his journey from Padua to Rome in his journal. This paper examines Folkes's travel diary to analyse his Freemasonry, his intellectual development as a Newtonian and his scientific peregrination...
October 5, 2017: British Journal for the History of Science
Ali Jendoubi, Ahmed Abbes, Salma Ghedira, Mohamed Houissa
INTRODUCTION: Pain is highly prevalent in critically ill trauma patients, especially those with a traumatic brain injury (TBI). Behavioral pain tools such as the behavioral pain scale (BPS) and critical-care pain observation tool are recommended for sedated noncommunicative patients. Analysis of heart rate variability (HRV) is a noninvasive method to evaluate autonomic nervous system activity. The analgesia nociception index (ANI) device (Physiodoloris(®), MDoloris Medical Systems, Loos, France) allows noninvasive HRV analysis...
September 2017: Indian Journal of Critical Care Medicine
Aysegul Ulu-Kilic, Aycan Gundogdu, Fatma Cevahir, Huseyin Kilic, Tamer Gunes, Emine Alp
BACKGROUND: Extensively resistant Acinetobacter baumannii has emerged and spread worldwide as a significant cause of health care-associated infections and outbreaks. It also causes life-threatening infections among neonates, including bacteremia. The aim of this study was to investigate an outbreak of A baumannii bacteremia (ABB) among neonates. MATERIALS AND METHODS: A retrospective, case-control study was conducted from July 2014 to July 2015 in a neonatal intensive care unit (NICU)...
September 25, 2017: American Journal of Infection Control
O Saoudi, N Ghaouar, S Ben Salah, T Othman
In this work, we are interested in the denaturation process of a laccase from Tramates versicolor via the determination of the refractive index, the refractive index increment and the specific volume in various media. The measurements were carried out using an Abbe refractometer. We have shown that the refractive index increment values obtained from the slope of the variation of the refractive index vs. Concentration are outside the range refractive index increments of proteins. To correct the results, we have followed the theoretical predictions based on the knowledge of the protein refractive index from its amino acids composition...
September 2017: Biochemistry and Biophysics Reports
Marc Wirden, Lucile Larrouy, Nadia Mahjoub, Eve Todesco, Florence Damond, Heloise Delagreverie, Sepideh Akhavan, Charlotte Charpentier, Marie-Laure Chaix, Diane Descamps, Vincent Calvez, Anne-Genevieve Marcelin
BACKGROUND: The new Roche Cobas 6800 platform (C6800) has been recently introduced for viral load (VL) measurement. OBJECTIVES: Comparing C6800 to Cobas Ampliprep/Cobas TaqMan v2.0 (CAP/CTM) for the quantification of HIV, HBV and HCV viremia, and to the Abbott RealTime assay (ABB) for HCV quantification. STUDY DESIGN: We analysed 121 samples for HBV, and 139 for HIV-1 including 2 groupO and 137 group M viruses (36.5% subtype B, 27.0% CRF02_AG, 22...
September 20, 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
Y Serour, M Bendahmane, F Abbou Baker, M Medles, B Moueddene, R Kraiba
INTRODUCTION: Persistent high-risk HPV (HR-HPV) infection is associated with a greater risk of cervical cancer. PATIENTS AND METHODS: Statistical data on the prevalence of HR-HPV infections in the Algerian population is lacking. We conducted a prospective study of 300 women aged between 25 and 50 years, screened for cervical cancer from 2012 to 2015 in Sidi Bel Abbès, a western region of Algeria. We aimed to assess the reliability of the repeated use of the HC II test (three longitudinal HPV tests 9 months apart from each other) in diagnosing the persistence of HR-HPV infection...
September 21, 2017: Médecine et Maladies Infectieuses
Emily J Tomayko, Ronald J Prince, Jill Hoiting, Abbe Braun, Tara L LaRowe, Alexandra K Adams
Physical activity is a critical component of obesity prevention, but few interventions targeting early childhood have been described. The Active Early guide was designed to increase physical activity in early care and education (ECE) settings. The purpose of Active Early 2.0 was to evaluate the effectiveness of Active Early along with provider training, microgrant support, and technical assistance over 2 years (2012-2014) to increase physical activity and related behaviors (e.g., nutrition) in settings serving a high proportion of children from underserved groups in recognition of significant disparities in obesity and challenges meeting physical activity recommendations in low-resource settings...
December 2017: Preventive Medicine Reports
Jan Philipp Eberle, Alexander Rapp, Matthias Krufczik, Marion Eryilmaz, Manuel Gunkel, Holger Erfle, Michael Hausmann
Fluorescence microscopy is an essential tool for imaging tagged biological structures. Due to the wave nature of light, the resolution of a conventional fluorescence microscope is limited laterally to about 200 nm and axially to about 600 nm, which is often referred to as the Abbe limit. This hampers the observation of important biological structures and dynamics in the nano-scaled range ~10 nm to ~100 nm. Consequentially, various methods have been developed circumventing this limit of resolution. Super-resolution microscopy comprises several of those methods employing physical and/or chemical properties, such as optical/instrumental modifications and specific labeling of samples...
2017: Methods in Molecular Biology
Jingzi Beiyuan, Abbe Y T Lau, Daniel C W Tsang, Weihua Zhang, Chih-Ming Kao, Kitae Baek, Yong Sik Ok, Xiang-Dong Li
Remediation of CCA-contaminated soil (Cr, Cu, and As) by biodegradable chelant-enhanced washing (EDDS, S,S-ethylene-diamine-disuccinic-acid) needs further enhancement. This study investigated the effectiveness of coupling with pre-treatment by selective dissolution and post-treatment by soil amendments, respectively. Three groups of reagents (reductants, alkaline solvents, and organic ligands) were adopted in the pre-treatment to dissolve the oxide minerals before EDDS extraction. In the post-treatment, soil amendments (coal fly ash (CFA), acid mine drainage sludge (AMDS), green waste compost (GWC)), and their mixtures) were used for a 2-month stabilization after 2-h EDDS washing...
September 9, 2017: Science of the Total Environment
Mohammed Soutto, Mohamed Saleh, Mohamed S Arredouani, Blanca Piazuelo, Abbes Belkhiri, Wael El-Rifai
Background: TFF1 deficiency induces a mucosal pro-inflammatory phenotype that contributes to gastric tumorigenesis in mouse and human. Methods: We utilized the Tff1-KO mouse model to assess the impact of TFF1 loss on immune cells infiltration in the stomach. We used single cell suspension, flow cytometry, immunohistochemistry, and quantitative PCR (qPCR) assays. Results: The Tff1-KO gastric mucosa demonstrated high chronic inflammatory scores (score: 3-4) at age 2 months, which exacerbated at age 8 months (score: 4-6)...
2017: Journal of Cancer
Rachel E Butler, Nitya Krishnan, Waldo Garcia-Jimenez, Robert Francis, Abbe Martyn, Tom Mendum, Shaza Felemban, Nicolas Locker, Javier Salguero-Bodes, Brian Robertson, Graham R Stewart
An important feature of Mycobacterium tuberculosis pathogenesis is the ability to control cell death in infected host cells, including inhibition of apoptosis and stimulation of necrosis. Recently an alternative form of programmed cell death, necroptosis, has been described where necrotic cell death is induced by apoptotic stimuli under conditions where apoptotic execution is inhibited. We show for the first time that M. tuberculosis and TNFα synergise to induce necroptosis in murine fibroblasts via RIPK1-dependent mechanisms and characterized by phosphorylation of Ser345 of the MLKL necroptosis death effector...
September 11, 2017: Virulence
Safia Fehim, Racheda Bouhaous, Mustapha Diaf, Amine Mokhtar Drici, Meghit Boumediene Khaled
BACKGROUND: Gastric cancer (GC) remains a public health issue despite the global incidence decrease over the last decades. GC is the third leading cause of cancer-related death worldwide and stills of poor prognosis due to its late detection. The overall objective of our study was to describe the epidemiological, clinical, and histopathological aspects of stomach cancer. However, the specific purpose was to determine the gastric precancerous lesions among patients with histologically confirmed GC admitted at the gastroenterology department of the University Hospital of Sidi-Bel-Abbes city, Algeria...
August 2017: Journal of Gastrointestinal Oncology
Dong-Hyuk Jeong, Jeong-Jin Yang, Lyon Lee, Seong-Chan Yeon
The objective of this study was to measure differences between arterial and venous blood gas parameters and to evaluate whether arterial blood gas values can be estimated from venous blood in Asiatic black bears (ABBs). Twelve healthy captive ABBs (8 males and 4 females; 8-16 years; 76.8-220 kg) were included in this study. The bears were immobilized with medetomidine and zolazepam-tiletamine using a dart gun. Arterial and venous samples were collected simultaneously at 5 and 35 min after recumbency (5- and 35-min points)...
September 10, 2017: Journal of Veterinary Medical Science
Danica Baines, Emily Wilton, Abbe Pawluk, Michael de Gorter, Nora Chomistek
Accumulating evidence suggests that neonicotinoids may have long-term adverse effects on bee health, yet our understanding of how this could occur is incomplete. Pesticides can act as endocrine disrupting chemicals (EDCs) in animals providing characteristic multiphasic dose-response curves and non-lethal endpoints in toxicity studies. However, it is not known if neonicotinoids act as EDCs in bees. To address this issue, we performed oral acute and chronic toxicity studies including concentrations recorded in nectar and pollen, applying acetamiprid, clothianidin, imidacloprid, and thiamethoxam to bumble bees, honey bees and leafcutter bees, the three most common bee species managed for pollination...
September 8, 2017: Scientific Reports
Brian D Robertson, Marisa Abbe, Jamie Pelletier, Halim Hennes
OBJECTIVES: The objective of this study was to compare the injury severity and outcome of motor vehicle and nonaccidental traumatic injuries and examine trends in mortality rates over time. METHODS: We reviewed data from 2005 to 2013 from a level 1 pediatric trauma center including demographics, injury severity, and outcomes. Primary outcomes of interest were mortality rates and hospital length of stay. RESULTS: Injury severity scores were significantly worse for nonaccidental traumas (NATs) (P < 0...
September 5, 2017: Pediatric Emergency Care
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