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https://www.readbyqxmd.com/read/29783693/microstructural-evolution-in-high-strain-rate-deformation-of-ti-5al-5mo-5v-1cr-1fe-alloy
#1
Chun Ran, Pengwan Chen, Zemin Sheng, Jingbo Li, Wangfeng Zhang
To study the microstructural evolution in high-strain-rate shear deformation of Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511) alloy, a series of forced shear tests of hat-shaped specimens have been conducted using a split Hopkinson pressure bar combined with the "strain-frozen" technique. A localized shear band is induced in Ti-55511 alloy in these tests. The experimental results demonstrate that the flow stress in hat-shaped specimens remains constant (about 600 MPa) and is independent of punching depth. The width of the adiabatic shear band increases with increasing punching depth and tends to saturate at 30 μm, and the estimation of the adiabatic shear band (ASB) width in hat-shaped (HS) specimens has been modified...
May 18, 2018: Materials
https://www.readbyqxmd.com/read/29753077/endoscopic-endonasal-reconstruction-of-anterior-skull-base-defects-what-factors-really-affect-the-outcomes
#2
Mario Turri-Zanoni, Jacopo Zocchi, Alessia Lambertoni, Marta Giovannardi, Apostolos Karligkiotis, Paolo Battaglia, Davide Locatelli, Paolo Castelnuovo
OBJECTIVES: Endoscopic endonasal surgery has evolved considerably over the last few decades, requiring comparable advances in reconstructive techniques. The objectives of this study were to retrospectively review the outcomes of endoscopic anterior skull base (ASB) reconstruction and to analyze factors that might be associated with failures. METHODS: Data from patients who underwent endoscopic endonasal ASB reconstruction in a single Institution between 1998 and 2017 were collected...
May 9, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29751566/improvement-of-adhesion-properties-and-corrosion-resistance-of-sol-gel-coating-on-zinc
#3
Pauline Savignac, Marie-Joëlle Menu, Marie Gressier, Bastien Denat, Yacine El Khadir, Stephan Manov, Florence Ansart
Corrosion is a major problem for durability of many metals and alloys. Among the efficient classical surface treatments, chromate-based treatments must be banished from industrial use due to their toxicity. At the same time, sol-gel routes have demonstrated high potential to develop an efficient barrier effect against aggressive environments. By this process, the anti-corrosion property can be also associated to others in the case of the development of multi-functional hybrid coatings. In this paper, the main goal is precisely to improve both the corrosion resistance and the adhesion properties of phosphated zinc substrates by the deposition of a hybrid (organic-inorganic) sol-gel layer...
May 3, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29748465/innovative-formulation-combining-al-zr-and-si-precursors-to-obtain-anticorrosion-hybrid-sol-gel-coating
#4
Clément Genet, Marie-Joëlle Menu, Olivier Gavard, Florence Ansart, Marie Gressier, Robin Montpellaz
The aim of our study is to improve the aluminium alloy corrosion resistance with Organic-Inorganic Hybrid (OIH) sol-gel coating. Coatings are obtained from unusual formulation with precursors mixing: glycidoxypropyltrimethoxysilane (GPTMS), zirconium (IV) propoxide (TPOZ) and aluminium tri-sec-butoxide (ASB). This formulation was characterized and compared with sol formulations GPTMS/TPOZ and GPTMS/ASB. In each formulation, a corrosion inhibitor, cerium (III) nitrate hexahydrate, is employed to improve the corrosion performance...
May 10, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29730831/the-relationship-between-the-maoa-uvntr-polymorphism-delinquent-peer-affiliation-and-antisocial-behavior-with-a-consideration-of-sex-differences
#5
Eric M Cooke, Todd Armstrong, Danielle Boisvert, Jessica Wells, Richard H Lewis, Sheree Hughes-Stamm, David Gangitano
With the advent of new and more readily usable gene sequencing techniques, researchers have been able to examine the interactions between genes and the environment (G X E) within a multitude of scientific perspectives. One area that G X E interactions have been implicated in is the development of antisocial behavior (ASB). Antisocial behavior consists of a wide range of maladaptive behaviors and has been at the forefront of public health and mental health concerns for decades. One genetic polymorphism that has been associated with ASB is MAOA-uVNTR...
May 5, 2018: Psychiatric Quarterly
https://www.readbyqxmd.com/read/29730759/bioaccumulation-of-as-hg-and-se-in-tunas-thunnus-albacares-and-katsuwonus-pelamis-from-the-eastern-pacific-tissue-distribution-and-as-speciation
#6
Jorge Ruelas-Inzunza, Zdenka Šlejkovec, Darja Mazej, Vesna Fajon, Milena Horvat, Mauricio Ramos-Osuna
With the aim of knowing the distribution of As, Hg, and Se in skipjack (Katsuwonus pelamis, Linnaeus, 1758) and yellowfin tuna (Thunnus albacares, Bonnaterre, 1788) from the Eastern Pacific, elemental concentrations were determined in the muscle and liver; As species were also analyzed in the stomach content. Additionally, health risk for consumers was assessed. For both tunas, levels of As and Se were significantly higher (p < 0.05) in the liver than in the muscle. In K. pelamis, Hg concentrations in the muscle were significantly higher (p < 0...
May 5, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29702338/genetic-correlation-of-antisocial-behaviour-with-alcohol-nicotine-and-cannabis-use
#7
Jorim J Tielbeek, Jacqueline M Vink, Tinca J C Polderman, Arne Popma, Danielle Posthuma, Karin J H Verweij
BACKGROUND: There is high comorbidity between antisocial behaviour (ASB) and substance use, and twin studies have shown that part of the covariation is due to overlapping genetic influences. Here we used measured genetic effects to estimate the genetic correlations of ASB with nicotine, alcohol, and cannabis use. METHODS: We meta-analysed data from two genome-wide association studies for ASB and used existing summary statistics from the largest genome-wide association studies into substance use (ever smoking, cigarettes smoked per day, weekly alcohol consumption, and lifetime cannabis use)...
April 18, 2018: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29701658/determination-of-arsenic-species-in-ophiocordyceps-sinensis-from-major-habitats-in-china-by-hplc-icp-ms-and-the-edible-hazard-assessment
#8
Lian-Xian Guo, Gui-Wei Zhang, Jia-Ting Wang, Yue-Ping Zhong, Zhi-Gang Huang
This study sought to determine the concentration and distribution of arsenic (As) species in Ophiocordyceps sinensis ( O. sinensis ), and to assess its edible hazard for long term consumption. The total arsenic concentrations, measured through inductively coupled plasma mass spectrometry (ICP-MS), ranged from 4.00 mg/kg to 5.25 mg/kg. As determined by HPLC-ICP-MS, the most concerning arsenic species&mdash;AsB, MMAV , DMAV , AsV , and AsШ &mdash;were either not detected (MMAV and DMAV ) or were detected as minor As species (AsB: 1...
April 26, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29697292/commonly-consumed-beverages-associate-with-different-lifestyle-and-dietary-intakes
#9
Louise Brunkwall, Peter Almgren, Sophie Hellstrand, Marju Orho-Melander, Ulrika Ericson
Sugar sweetened beverages (SSB), artificially sweetened beverages (ASB), juice, coffee and tea has been associated with risk of metabolic disease. High consumption of these beverages may be associated with certain characteristics of the overall diet that would be important to take into account when analysing beverage-disease associations. Here, we investigate five beverages and their association with lifestyle and diet in 25,112 individuals from the Malmö Diet and Cancer Cohort. We observed that high consumption of SSB was associated with lower intakes of foods perceived as healthy...
April 26, 2018: International Journal of Food Sciences and Nutrition
https://www.readbyqxmd.com/read/29682322/collection-of-analog-series-based-scaffolds-from-public-compound-sources
#10
REVIEW
Dilyana Dimova, Jürgen Bajorath
Aim: Providing a large and freely available in silico collection of analog series-based (ASB) scaffolds for computational design and medicinal chemistry applications. Methodology: Using a recently introduced computational method, ASB scaffolds with single and multiple substitution sites were systematically isolated from publicly available active compounds. Data: A total of 23,791 unique ASB scaffolds are made available in an organized and machine-readable form as an open access deposition...
April 2018: Future Science OA
https://www.readbyqxmd.com/read/29667349/asb1-differential-methylation-in-ischaemic-cardiomyopathy-relationship-with-left-ventricular-performance-in-end-stage-heart-failure-patients
#11
Ana Ortega, Estefanía Tarazón, Carolina Gil-Cayuela, Luis Martínez-Dolz, Francisca Lago, José Ramón González-Juanatey, Juan Sandoval, Manuel Portolés, Esther Roselló-Lletí, Miguel Rivera
AIMS: Ischaemic cardiomyopathy (ICM) leads to impaired contraction and ventricular dysfunction, causing high rates of morbidity and mortality. Epigenomics allows the identification of epigenetic signatures in human diseases. We analyse the differential epigenetic patterns of the ASB gene family in ICM patients and relate these alterations to their haemodynamic and functional status. METHODS AND RESULTS: Epigenomic analysis was carried out using 16 left ventricular (LV) tissue samples, eight from ICM patients undergoing heart transplantation and eight from control (CNT) subjects without cardiac disease...
April 17, 2018: ESC Heart Failure
https://www.readbyqxmd.com/read/29660385/pre-operative-asymptomatic-bacteriuria-a-risk-factor-for-prosthetic-joint-infection
#12
R Weale, F El-Bakri, Kordo Saeed
BACKGROUND: Infection is a rare complication following implantation of prosthetic material into a joint. The impact of asymptomatic bacteriuria (ASB) before elective operations and the subsequent risk of prosthetic joint infection (PJI) are not well understood. AIMS: • Assess the prevalence of ASB amongst patients undergoing total arthroplasty of the hip and knee. • Determine the rates of PJI diagnosed within two years of the arthroplasty and if ASB is an independent risk factor for developing PJI...
April 13, 2018: Journal of Hospital Infection
https://www.readbyqxmd.com/read/29624909/exposure-to-liquid-sweetness-in-early-childhood-artificially-sweetened-and-sugar-sweetened-beverage-consumption-at-4-5-years-and-risk-of-overweight-and-obesity-at-7-8-years
#13
A K Macintyre, L Marryat, S Chambers
BACKGROUND: A significant gap exists in longitudinal evidence on early exposure to artificially sweetened beverages (ASBs) and weight outcomes for paediatric populations. OBJECTIVE: The objective of this study is to examine the relationship between ASB/sugar-sweetened beverage (SSB) consumption at 4-5 years and risk of overweight and obesity at 7-8 years. METHODS: Data from a nationally representative cohort (n = 2986) in Scotland were analysed using logistic regression to evaluate the association between exposure to ASBs/SSBs at 4-5 years and risk of overweight and obesity at 7-8 years...
April 6, 2018: Pediatric Obesity
https://www.readbyqxmd.com/read/29578382/pre-operative-screening-for-asymptomatic-bacteriuria-and-associations-with-post-operative-outcomes-in-patients-with-spinal-cord-injury
#14
Margaret A Fitzpatrick, Katie J Suda, Stephen P Burns, Linda Poggensee, Swetha Ramanathan, Charlesnika T Evans
CONTEXT: Screening for asymptomatic bacteriuria (ASB) before non-urologic surgery is common but of unclear benefit. Our aim was to describe pre-operative ASB screening and post-operative outcomes in patients with neurogenic bladder due to spinal cord injury (SCI). METHODS: This was a descriptive retrospective cohort study of adults with SCI undergoing neurosurgical spine or orthopedic lower limb surgery from 10/1/2012-9/30/2014 at Veterans Affairs (VA) medical centers...
March 26, 2018: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/29577703/-analysis-of-arsenic-compounds-in-blood-and-urine-by-hplc-icp-ms
#15
L Lin, S J Zhang, W C Xu, R X Luo, D Ma, M Shen
OBJECTIVES: To establish an analysis method for the detection of 6 arsenic compounds [AsC, AsB, As(Ⅲ), DMA, MMA and As(V)] in blood and urine by high-performance liquid chromatography-inductively coupled plasma-mass spectrometry (HPLC-ICP-MS), and apply it to real cases. METHODS: Triton was used to damage cells, and then EDTA·2Na·2H2O was used to complex arsenic compounds in cells, and sonication and protein deposition by acetonitrile were performed for sample pretreatment...
February 2018: Fa Yi Xue za Zhi
https://www.readbyqxmd.com/read/29571485/a-feasible-method-for-as-speciation-in-several-types-of-seafood-by-lc-icp-ms-ms
#16
Lucas Schmidt, Julio Alberto Landero, Diogo La Rosa Novo, Fabio Andrei Duarte, Marcia Foster Mesko, Joseph A Caruso, Erico Marlon Moraes Flores
A method for arsenic speciation in shark, shrimp, squid, oyster and scallop using liquid chromatography coupled to inductively coupled plasma triple quadrupole mass spectrometry (LC-ICP-MS/MS) was proposed. Suitable sensitivity and selectivity by LC-ICP-MS/MS were obtained using 10 mmol L-1 (NH4 )2 HPO4 diluted in 1% methanol (pH 8.65) as mobile phase. Recoveries from 90 to 104% for arsenobetaine (AsB), arsenite [As(III)], dimethylarsinic acid (DMA), monomethylarsonic acid (MMA) and arsenate [As(V)] were obtained for all samples...
July 30, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29567188/arsenic-speciation-in-tree-moss-by-mass-spectrometry-based-hyphenated-techniques
#17
Kai Nan, Man He, Beibei Chen, Yujie Chen, Bin Hu
A method based on ion-pair reversed phase high performance liquid chromatography (HPLC) hyphenated with inductively coupled plasma mass spectrometry (ICP-MS) was developed for arsenic speciation in extract of tree moss. Under the optimal conditions, the limit of detection of eight arsenic species including arsenite (AsIII ), arsenate (AsV ), monomethylarsonic acid (MMA), dimethylarsonic acid (DMA), trimethylarsinoxide (TMAO), tetramethylarsonium (Tetra), arsenocholine (AsC) and arsenobetaine (AsB) is between 0...
June 1, 2018: Talanta
https://www.readbyqxmd.com/read/29554629/comparative-study-on-the-bioaccumulation-and-biotransformation-of-arsenic-by-some-northeastern-atlantic-and-northwestern-mediterranean-sponges
#18
Anna Maria Orani, Aurélie Barats, Wendy Zitte, Christine Morrow, Olivier P Thomas
The bioaccumulation and biotransformation of arsenic (As) were studied in six representative marine sponges from the French Mediterranean and Irish Atlantic coasts. Methodologies were carefully optimized in one of the species on Haliclona fulva sponges for two critical steps: the sample mineralization for total As analysis by ICP-MS and the extraction of As species for HPLC-ICP-MS analysis. During the optimization, extractions performed with 0.6 mol L-1 H3 PO4 were shown to be the most efficient. Extraction recovery of 81% was obtained which represents the best results obtained until now in sponge samples...
June 2018: Chemosphere
https://www.readbyqxmd.com/read/29521798/a-negative-ct-may-be-sufficient-to-safely-discharge-patients-with-abdominal-seatbelt-sign-from-the-emergency-department-a-case-series-analysis
#19
Galinos Barmparas, Deven C Patel, Nikhil T Linaval, Navpreet K Dhillon, Kavita A Patel, Daniel R Margulies, Eric J Ley
BACKGROUND: The presence of an abdominal seatbelt sign (ASBS) following a motor vehicle collision (MVC) is associated with a high risk for occult intraabdominal injury, prompting imaging studies and a prolonged period of clinical observation. The aim of this study was to determine how a negative computerized tomography (CT) of the abdomen/pelvis (A/P) can serve in the safe disposition of these patients. Our hypothesis was that in the setting of a negative CT, the presence of occult intra-abdominal injuries requiring a delayed intervention is extremely unlikely...
March 8, 2018: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29508692/cross-sectional-association-between-sugar-sweetened-beverage-intake-and-cardiometabolic-biomarkers-in-us-women
#20
Zhi Yu, Sylvia H Ley, Qi Sun, Frank B Hu, Vasanti S Malik
Few studies have evaluated the relationships between intake of sugar-sweetened beverages (SSB) and intermediate biomarkers of cardiometabolic risk. Associations between artificially sweetened beverages (ASB) and fruit juice with cardiometabolic biomarkers are also unclear. We investigated habitual SSB, ASB and fruit juice intake in relation to biomarkers of hepatic function, lipid metabolism, inflammation and glucose metabolism. We analysed cross-sectional data from 8492 participants in the Nurses' Health Study who were free of diabetes and CVD...
March 2018: British Journal of Nutrition
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