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https://www.readbyqxmd.com/read/29245182/an-efficient-parallel-simulation-of-unsteady-blood-flows-in-patient-specific-pulmonary-artery
#1
Fande Kong, Vitaly Kheyfets, Ender Finol, Xiao-Chuan Cai
Simulation of blood flows in the pulmonary artery provides some insight into certain diseases by examining the relationship between some continuum metrics, e.g. the wall shear stress acting on the vascular endothelium, which responds to flow-induced mechanical forces by releasing vasodilators/constrictors. In [?kheyfets2015patient], V. Kheyfets studies numerically a patient-specific pulmonary circulation to show that decreasing wall shear stress is correlated with increasing pulmonary vascular impedance. In this paper, we develop a scalable parallel algorithm based on domain decomposition methods to investigate an unsteady model with patient specific pulsatile waveforms as the inlet boundary condition...
December 15, 2017: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/29245180/factors-influencing-cane-use-for-the-management-of-knee-osteoarthritis-a-cross-sectional-survey
#2
Julia Hart, Rana S Hinman, Ans Van Ginckel, Michelle Hall, Rachel Nelligan, Kim L Bennell
OBJECTIVE: To investigate demographic, symptom-related and cognitive determinants of cane use for knee osteoarthritis (OA) and prioritise the factors that could facilitate cane use in people with no previous cane use. METHODS: A survey of people aged ≥45 years with a clinical diagnosis of knee OA was conducted. The survey included two sections: i) demographic and cognitive determinants of cane use assessed via subscales of the Cane Cognitive Mediator Scale; ii) 19 statements, underpinned by the Behaviour Change Wheel theoretical framework, relating to factors that could facilitate regular cane use...
December 15, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/29245169/-mistakes-and-drawbacks-in-german-newspaper-articles-on-epidemiologic-studies-meat-consumption-and-colorectal-cancer-as-an-example
#3
Bernd Kowall, Andreas Stang
Background Results of epidemiologic studies are often reported in the media because they are of vital interest for many people. Using the example of meat consumption and colorectal cancer, we investigated whether results of epidemiologic studies are reported in an understandable and correct manner in German newspapers and magazines. Methods We gathered all articles published in 13 selected German newspapers and magazines that referred to a press release on meat consumption and colorectal cancer issued by the International Agency for Research on Cancer (IARC) on October 26th 2015...
December 15, 2017: Das Gesundheitswesen
https://www.readbyqxmd.com/read/29245168/-school-entrance-examination-for-lateral-entrants-what-can-and-what-should-they-be-able-to-do-a-discussion-contribution-based-on-the-data-from-the-health-authority-frankfurt-am-main-2006-2016
#4
Maria Karathana, Bernhard Krackhardt, Manuela Schade, Ursel Heudorf
Question The medical investigation of school beginners is one of the essential tasks of the child and youth services of the health authorities. While in all federal states in Germany, the examination of all school beginners is legally clearly stipulated, the situation for "lateral entry", that is, children of school age, who are moving from a foreign country to a local German community and attending school there, is not clearly regulated in the respective school laws. This article presents the experiences of the lateral entry investigations in Frankfurt am Main...
December 15, 2017: Das Gesundheitswesen
https://www.readbyqxmd.com/read/29245159/serum-sex-hormone-binding-globulin-shbg-relation-with-different-components-of-metabolic-syndrome-in-men-with-type-2-diabetes
#5
Khalid Siddiqui, Khalid Al-Rubeaan, Shaik Sarfaraz Nawaz, Khaled H Aburisheh, Anas M Zein Alaabdin, Ibrahim A Tolba
Sex hormone binding globulin (SHBG) is demonstrated to be decreased in subjects with metabolic syndrome (MetS). The aim of the present study was to investigate the association of SHBG in relation to MetS components among men with type 2 diabetes (T2D). This cross-sectional study was carried out among 429 Saudi T2D male patients aged >30 years. Metabolic syndrome was defined using International Diabetes Federation (IDF) criteria. Fasting blood glucose (FBG), HbA1c, albumin, and lipid parameter were measured...
December 15, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/29245158/-intrapartum-translabial-ultrasound-a-systematic-analysis-of-the-fetal-head-station-in-the-first-stage-of-labor
#6
Fabian Kohls, Lars Brodowski, Elna Kuehnle, Nadine Kniebusch, Karim Djaffar Kalache, Alexander Weichert
Introduction This prospective study aimed to define the angle of progression (AOP) in relation to the height position of the fetal head during the first stage of labour. It was investigated if it is possible to predict the mode of delivery or the duration of labour by AOP. Methods Influencing factors on delivery were head circumference, birth-weight, administration of oxytocin, epidural anaesthesia (EA) and parity, and their impact on AOP was analysed. AOP was calculated using three different formulas. Inclusion criteria were vaginal delivery of singletons in cephalic, occipito-anterior presentation...
December 15, 2017: Zeitschrift Für Geburtshilfe und Neonatologie
https://www.readbyqxmd.com/read/29245150/mobilization-of-arsenic-on-nano-tio2-in-soil-columns-with-sulfate-reducing-bacteria
#7
Ting Luo, Li Ye, Tingshan Chan, Chuanyong Jing
Arsenic (As) remediation in contaminated water using nanoparticles is promising. However, the fate and transport of As associated with nano-adsorbents in natural environment is poorly understood. To investigate the fate of adsorbed As on nano-TiO2 in changed redox condition from oxic to anoxic, we added the As(V)-TiO2 suspension in groundwater to an autoclaved soil column which inoculated a sulfate-reducing bacterium, Desulfovibrio vulgaris DP4. The dissolved As(V) in effluent increased to 798 μg/L for the biotic column and to 1510 μg/L for the abiotic control, and dissolved As(III) was observed only in biotic column...
December 12, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29245147/levels-of-trace-elements-methylmercury-and-polybrominated-diphenyl-ethers-in-foraging-green-turtles-in-the-south-china-region-and-their-conservation-implications
#8
Connie Ka Yan Ng, James Chung Wah Lam, Xiao Hua Zhang, He Xiang Gu, Tsung Hsien Li, Min Bin Ye, Zhong Rong Xia, Fei Yan Zhang, Jin Xia Duan, Wen Xiong Wang, Isaac Kam Sum Lam, George H Balazs, Paul K S Lam, Margaret B Murphy
Sea turtles are globally endangered and face daily anthropogenic threats, including pollution. However, there is a lack of ecotoxicological information on sea turtles, especially in the Asia-Pacific region. This study aims to determine pollutant levels of foraging green turtles (Chelonia mydas) in South China, including Hong Kong, Guangdong and Taiwan, as a basis for their conservation. Scute, liver and muscle tissues of stranded green turtles were analysed for levels of 17 trace elements and methylmercury (MeHg) (n = 86 for scute and n = 14 for liver) and polybrominated diphenyl ethers (PBDEs) (n = 11 for muscle and n = 13 for liver)...
December 12, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/29245145/comparative-leaching-of-six-toxic-metals-from-raw-and-chemically-stabilized-mswi-fly-ash-using-citric-acid
#9
Huawei Wang, Xinxiu Fan, Ya-Nan Wang, Weihua Li, Yingjie Sun, Meili Zhan, Guizhi Wu
The leaching behavior of six typical toxic metals (Pb, Zn, Cr, Cd, Cu and Ni) from raw and chemically stabilized (phosphate and chelating agent) municipal solid waste incineration (MSWI) fly ash were investigated using citric acid. Leaching tests indicated that phosphate stabilization can effectively decrease the leaching of Zn, Cd and Cr; whereas chelating agent stabilization shows a strong ability to lower the release of Pb, Cd and Cu, but instead increases the solubility of Zn and Cr at low pH conditions...
December 12, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/29245143/functionalization-of-protein-crystals-with-metal-ions-complexes-and-nanoparticles
#10
REVIEW
Satoshi Abe, Basudev Maity, Takafumi Ueno
Self-assembled proteins have specific functions in biology. With inspiration provided by natural protein systems, several artificial protein assemblies have been constructed via site-specific mutations or metal coordination, which have important applications in catalysis, material and bio-supramolecular chemistry. Similar to natural protein assemblies, protein crystals have been recognized as protein assemblies formed of densely-packed monomeric proteins. Protein crystals can be functionalized with metal ions, metal complexes or nanoparticles via soaking, co-crystallization, creating new metal binding sites by site-specific mutations...
December 12, 2017: Current Opinion in Chemical Biology
https://www.readbyqxmd.com/read/29245133/source-identification-and-ecological-impact-evaluation-of-pahs-in-urban-river-sediments-a-case-study-in-taiwan
#11
Y T Tu, J H Ou, D C W Tsang, C D Dong, C W Chen, C M Kao
The Love River and Ho-Jin River, two major urban rivers in Kaohsiung City, Taiwan, are moderately to heavily polluted because different types of improperly treated wastewaters are discharged into the rivers. In this study, sediment and river water samples were collected from two rivers to investigate the river water quality and accumulation of polycyclic aromatic hydrocarbons (PAHs) in sediments. The spatial distribution, composition, and source appointment of PAHs of the sediments were examined. The impacts of PAHs on ecological system were assessed using toxic equivalence quotient (TEQ) of potentially carcinogenic PAHs (TEQcarc) and sediment quality guidelines...
December 5, 2017: Chemosphere
https://www.readbyqxmd.com/read/29245127/exogenous-allantoin-increases-arabidopsis-seedlings-tolerance-to-nacl-stress-and-regulates-expression-of-oxidative-stress-response-genes
#12
Solmaz Irani, Christopher D Todd
Allantoin is a nitrogenous compound derived from purine catabolism that contributes to nitrogen recycling in plants. Accumulation of allantoin in plant tissues and a potential role in protection of plants from abiotic stress conditions has been identified. The present work shows that application of exogenous allantoin increased stress tolerance of Arabidopsis seedlings when germinated on, or subjected to the media containing NaCl. Allantoin-induced tolerance to NaCl stress was associated with decreased production of superoxide and hydrogen peroxide in seedlings...
December 7, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/29245125/delayed-type-hypersensitivity-to-metals-in-connective-tissue-diseases-and-fibromyalgia
#13
REVIEW
Geir Bjørklund, Maryam Dadar, Jan Aaseth
Rheumatic diseases include a group of autoimmune disorders with environmental and genetic etiology that are characterized as a subgroup of connective tissue diseases (CTD). Rheumatoid arthritis (RA) often involves the small joints of the hands in a symmetrical fashion that can lead to loss of joint function, and RA, as well as Sjögren's syndrome (SS) and other rheumatic diseases, are often accompanied by sensitivity to metals. Numerous investigations on metal sensitivity were evaluated in this review. A detailed metal exposure history was collected by different evaluation of studies...
December 12, 2017: Environmental Research
https://www.readbyqxmd.com/read/29245121/co-doped-tio2-nanostructures-as-a-strong-antibacterial-agent-and-self-cleaning-cover-synthesis-characterization-and-investigation-of-photocatalytic-activity-under-uv-irradiation
#14
Maryam Hosseini-Zori
The aim of this work was synthesis and investigation of various properties of Co-doped titanium dioxide nanostructures. However, dopant has no effect on XRD pattern of the host but it can influence on the various characteristics of host such as optical and electrical properties. The results of optical properties showed that absorption energy of TiO2 decreases in presence of cobalt as dopant. Red-shift in absorption spectrum that may be due to the excitation of 3d electrons of Co ions to the conduction band of TiO2 can be considered as a strong evidence to confirm the presence of Co as dopant in TiO2 lattice...
December 8, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29245118/higher-order-longitudinal-guided-wave-modes-in-axially-stressed-seven-wire-strands
#15
Brennan Dubuc, Arvin Ebrahimkhanlou, Salvatore Salamone
This paper investigates the effect of axial stress on higher order longitudinal guided modes propagating in individual wires of seven-wire strands. Specifically, an acoustoelastic theory for a rod is used to predict the effect of stress on the phase velocity of guided modes in a strand. To this end, the exact acoustoelastic theory for an axially stressed rod is adapted for small deformations. Aside from the exact theory, approximate phase velocity changes (derived from both theory and experiment) are proposed, without the need to solve for dispersion curves...
December 7, 2017: Ultrasonics
https://www.readbyqxmd.com/read/29245117/gold-nanoflowers-synthesized-using-acanthopanacis-cortex-extract-inhibit-inflammatory-mediators-in-lps-induced-raw264-7-macrophages-via-nf-%C3%AE%C2%BAb-and-ap-1-pathways
#16
Sungeun Ahn, Priyanka Singh, Mi Jang, Yu-Jin Kim, Verónica Castro-Aceituno, Shakina Yesmin Simu, Yeon Ju Kim, Deok-Chun Yang
We reported the rapid synthesis (<8s) of gold nanoparticles at room temperature using Acanthopanacis cortex extract (A-AuNPs). We characterized the A-AuNPs using several analytical techniques and found that nano-flower type A-AuNPs, which are known to possess a coarse surface with a high surface to volume ratio, conferring these particles with high binding capacity for various biological molecules. After confirming the stability of the nanoparticles, we investigated the anti-inflammatory effect of A-AuNPs in LPS-stimulated RAW264...
November 17, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29245116/human-lung-epithelial-cells-a549-epithelial-mesenchymal-transition-induced-by-pva-collagen-nanofiber
#17
Xiuchun Li, Shanshan Yan, Jing Dai, Yi Lu, Yiqun Wang, Man Sun, Jinkang Gong, Yuan Yao
Epithelial-mesenchymal transition (EMT) is a process by which epithelial cells lose their cell-cell contact to become mesenchymal stem cells, which is important on development and embryogenesis, wound healing, and cancer metastasis. This research aims to investigate the effect of topological cue as modulating factor on the EMT by tuning the diameter of electrospinning nanofiber. The cell-nanofiber interaction between human lung epithelial cell A549 and electrospinning nanofibers composed of polyvinyl alcohol (PVA) and type I collagen were investigated...
December 11, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29245113/the-temporal-relationship-between-activity-of-the-pelvic-floor-muscles-and-motion-of-selected-urogenital-landmarks-in-healthy-nulliparous-women
#18
Stéphanie Thibault-Gagnon, Cindy Auchincloss, Ryan Graham, Linda McLean
AIMS: The purpose of this study was to investigate the relationship between pelvic floor muscle (PFM) electromyographic (EMG) activation and urogenital landmark motion measured using 2D transperineal ultrasound (US) imaging. METHODS: Eight healthy, nulliparous women performed maximum voluntary PFM contractions while EMG and transperineal US images were acquired simultaneously. Changes in the levator plate length (LPL), bladder neck (BN) position and urethral position were determined by visual inspection...
December 6, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29245107/impacts-on-the-seagrass-zostera-nigricaulis-from-the-herbicide-fusilade-forte%C3%A2-used-in-the-management-of-spartina-anglica-infestations
#19
Megan Carve, Timothy L Coggan, Jackie H Myers, Bradley Clarke, Dayanthi Nugegoda, Jeff Shimeta
The herbicide Fusilade Forte® (FF) is widely applied in agricultural weed management and in the management of the invasive saltmarsh grass, Spartina anglica (ricegrass or cordgrass). FF (active ingredient fluazifop-P acid, FPA) is selective for poaceous grasses. Its primary mode of action is inhibition of the acetyl coenzyme-A carboxylase (ACCase) specific to this taxonomic group, and its secondary mode is by promotion of oxidative stress. FF is applied to S. anglica infestations in the intertidal zone, in proximity to seagrass meadows...
December 1, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/29245093/neurocognitive-functioning-in-first-episode-bipolar-disorder-relationship-with-functional-status
#20
Alejandro G Szmulewicz, Marina P Valerio, Julieta Lomastro, José M Smith, Virginia Chiappe, Diego J Martino, Ana Igoa
BACKGROUND: The aim of this study was to assess if an association between neurocognitive deficits and psychosocial functioning exists in first-episode BD patients. METHODS: Twenty-five euthymic first-episode BD patients and thirty-seven healthy controls were recruited. History of suicide attempts, psychiatric comorbidities, pharmacological exposure, and previous depressive episodes were investigated. Performances on neurocognitive domains (verbal memory, attention, processing speed, and executive functions) as well as a measure of psychosocial functioning were used as outcomes...
December 8, 2017: Journal of Affective Disorders
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