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https://www.readbyqxmd.com/read/28548240/viscoelastic-computational-modeling-of-the-human-head-neck-system-eigenfrequencies-and-time-dependent-analysis
#1
E Boccia, A Gizzi, C Cherubini, M G C Nestola, S Filippi
A subject-specific three-dimensional viscoelastic finite element model of the human head-neck system is presented and investigated based on Computed Tomography and Magnetic Resonance biomedical images. Ad hoc imaging processing tools are developed for the reconstruction of the simulation domain geometry and the internal distribution of bone and soft tissues. Materials viscoelastic properties are characterized point-wise through an image-based interpolating function used then for assigning the constitutive prescriptions of a heterogenous viscoelastic continuum model...
May 26, 2017: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/28544642/evaluation-of-a-targeted-prescriber-education-intervention-on-emergency-department-discharge-oxycodone-prescribing
#2
Síne R Donaldson, Andrew M Harding, Simone E Taylor, Hassan Vally, Shaun L Greene
OBJECTIVES: The objective of this study was to evaluate the impact of an educational intervention on ED discharge opioid analgesic (OA) prescribing. METHODS: A brief, one-on-one, educational intervention was delivered to ED OA prescribers by an ED clinical champion. The percentage of patients receiving (i) written advice regarding appropriate oxycodone use, (ii) written or verbal advice regarding appropriate post-discharge follow up and (iii) written general practitioner notification that oxycodone had been prescribed were determined pre- and post-intervention, through review of electronic patient records and structured patient telephone interviews conducted 3-7 days after ED attendance...
May 24, 2017: Emergency Medicine Australasia: EMA
https://www.readbyqxmd.com/read/28544169/recent-progress-of-first-principles-calculations-in-ch3nh3pbi3-perovskite-solar-cells
#3
Sining Yun, Xiao Zhou, Jacky Even, Anders Hagfeldt
Hybrid halide perovskite solar cells (PSCs) exceeding 22% power conversion efficiencies (PCEs) have attracted considerable global attention due to the intrinsic nature of perovskite. Although we all know about that perovskite plays a significant role in the operation of PSCs, the fundamental theories associated with perovskite have not been resolved by the exponential increase in research effort. This raises questions about whether the first-principles calculations are sufficiently addressing the underlying issues in perovskite...
May 23, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28541923/does-verruca-vulgaris-affect-social-anxiety-and-self-esteem-in-adolescents
#4
Dilek Unal, Fatma Pelin Cengiz, Nazan Emiroglu
Objective Sensitivity about appearance is one of the sine qua non of adolescence and adolescents' self-esteem effecting their socialization processes. We explored if verruca vulgaris, a common visible infectious skin disease, affects social anxiety levels and self-esteem in adolescents compared to controls. Also, the difference in sociodemographic properties between two groups and the effect of clinical properties (the distribution and number of warts) on these parameters were investigated in the patient group...
May 24, 2017: International Journal of Adolescent Medicine and Health
https://www.readbyqxmd.com/read/28540752/herpes-zoster-typical-and-atypical-presentations
#5
Roy Rafael Dayan, Roni Peleg
Varicella- zoster virus infection is an intriguing medical entity that involves many medical specialties including infectious diseases, immunology, dermatology, and neurology. It can affect patients from early childhood to old age. Its treatment requires expertise in pain management and psychological support. While varicella is caused by acute viremia, herpes zoster occurs after the dormant viral infection, involving the cranial nerve or sensory root ganglia, is re-activated and spreads orthodromically from the ganglion, via the sensory nerve root, to the innervated target tissue (skin, cornea, auditory canal, etc...
May 25, 2017: Postgraduate Medicine
https://www.readbyqxmd.com/read/28540199/role-of-different-imaging-modalities-of-vascular-calcification-in-predicting-outcomes-in-chronic-kidney-disease
#6
REVIEW
Sinee Disthabanchong, Sarinya Boongird
Vascular calcification (VC) is common among patients with chronic kidney disease (CKD). The severity of VC is associated with increased risk of cardiovascular events and mortality. Risk factors for VC include traditional cardiovascular risk factors as well as CKD-related risk factors such as increased calcium and phosphate load. VC is observed in arteries of all sizes from small arterioles to aorta, both in the intima and the media of arterial wall. Several imaging techniques have been utilized in the evaluation of the extent and the severity of VC...
May 6, 2017: World Journal of Nephrology
https://www.readbyqxmd.com/read/28537233/-canonical-and-noncanonical-rna-polyadenylation
#7
I G Ustyantsev, J S Golubchikova, O R Borodulina, D A Kramerov
Polyadenylation is the non-template addition of adenosine nucleotides at the 3'-end of RNA, which occurs after transcription and generates a poly(A) tail up to 250-300 nucleotides long. In the first section of our review, we consider the classical process of mRNA 3'-terminus formation, which involves the cleavage of the transcript synthesized by RNA polymerase II and the associated poly(A) tail synthesis by canonical polyadenylate polymerase. Nucleotide sequences needed for mRNA cleavage and poly(A) tail synthesis, in particular the AAUAAA polyadenylation signal, as well as numerous proteins and their complexes involved in mRNA cleavage and polyadenylation, is described in detail...
March 2017: Molekuliarnaia Biologiia
https://www.readbyqxmd.com/read/28536458/epigenetic-priming-restores-the-hla-class-i-antigen-processing-machinery-expression-in-merkel-cell-carcinoma
#8
Cathrin Ritter, Kaiji Fan, Annette Paschen, Sine Reker Hardrup, Soldano Ferrone, Paul Nghiem, Selma Ugurel, David Schrama, Jürgen C Becker
Merkel cell carcinoma (MCC) is a rare and aggressive, yet highly immunogenic skin cancer. The latter is due to its viral or UV-associated carcinogenesis. For tumor progression MCC has to escape the host's immuno-surveillance, e.g. by loss of HLA class-I expression. Indeed, a reduced HLA class-I expression was observed in MCC tumor tissues and MCC cell lines. This reduced HLA class-I surface expression is caused by an impaired expression of key components of the antigen processing machinery (APM), including LMP2 and LMP7 as well as TAP1 and TAP2...
May 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28532081/the-hot-deformation-behavior-and-microstructure-evolution-of-ha-mg-3zn-0-8zr-composites-for-biomedical-application
#9
Debao Liu, Yichi Liu, Yue Zhao, Y Huang, Minfang Chen
The hot deformation behavior of nano-sized hydroxylapatite (HA) reinforced Mg-3Zn-0.8Zr composites were performed by means of Gleeble-1500D thermal simulation machine in a temperature range of 523-673K and a strain rate range of 0.001-1s(-1), and the microstructure evolution during hot compression deformation were also investigated. The results show that the flow stress increases increasing strain rates at a constant temperature, and decreases with increasing deforming temperatures at a constant strain rate...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28529431/sharp-inequalities-for-tangent-function-with-applications
#10
Hui-Lin Lv, Zhen-Hang Yang, Tian-Qi Luo, Shen-Zhou Zheng
In the article, we present new bounds for the function [Formula: see text] on the interval [Formula: see text] and find sharp estimations for the Sine integral and the Catalan constant based on a new monotonicity criterion for the quotient of power series, which refine the Redheffer and Becker-Stark type inequalities for tangent function.
2017: Journal of Inequalities and Applications
https://www.readbyqxmd.com/read/28521394/increased-six1-expression-is-associated-with-poor-prognosis-in-patients-with-osteosarcoma
#11
Lemeng Chao, Jianfeng Liu, Dewei Zhao
Sine oculis homeobox homolog 1 (Six1) is an evolutionarily conserved transcription factor that acts as master regulator of development and is frequently dysregulated in various types of cancer. Six1 has been demonstrated to be upregulated in human osteosarcoma cell lines compared with osteoblastic cell lines. However, the association of Six1 expression with the progression and prognosis of osteosarcoma patients remains unclear. The purpose of the present study was to investigate the association between Six1 expression and the clinicopathological characteristics and prognosis of osteosarcoma...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28518086/ptr-tof-ms-coupled-with-an-automated-sampling-system-and-tailored-data-analysis-for-food-studies-bioprocess-monitoring-screening-and-nose-space-analysis
#12
Vittorio Capozzi, Sine Yener, Iuliia Khomenko, Brian Farneti, Luca Cappellin, Flavia Gasperi, Matteo Scampicchio, Franco Biasioli
Proton Transfer Reaction (PTR), combined with a Time-of-Flight (ToF) Mass Spectrometer (MS) is an analytical approach based on chemical ionization that belongs to the Direct-Injection Mass Spectrometric (DIMS) technologies. These techniques allow the rapid determination of volatile organic compounds (VOCs), assuring high sensitivity and accuracy. In general, PTR-MS requires neither sample preparation nor sample destruction, allowing real time and non-invasive analysis of samples. PTR-MS are exploited in many fields, from environmental and atmospheric chemistry to medical and biological sciences...
May 11, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28516933/experimental-characterization-of-a-quantum-many-body-system-via-higher-order-correlations
#13
Thomas Schweigler, Valentin Kasper, Sebastian Erne, Igor Mazets, Bernhard Rauer, Federica Cataldini, Tim Langen, Thomas Gasenzer, Jürgen Berges, Jörg Schmiedmayer
Quantum systems can be characterized by their correlations. Higher-order (larger than second order) correlations, and the ways in which they can be decomposed into correlations of lower order, provide important information about the system, its structure, its interactions and its complexity. The measurement of such correlation functions is therefore an essential tool for reading, verifying and characterizing quantum simulations. Although higher-order correlation functions are frequently used in theoretical calculations, so far mainly correlations up to second order have been studied experimentally...
May 17, 2017: Nature
https://www.readbyqxmd.com/read/28516108/what-is-car-doing-in-the-middle-of-the-adult-neurogenic-road
#14
COMMENT
Sara Salinas, Felix Junyent, Nathalie Coré, Harold Cremer, Eric J Kremer
The molecular and cellular basis of adult neurogenesis has attracted considerable attention for fundamental and clinical applications because neural stem cells and newborn neurons may, one day, be harnessed to replace neurons and allow cognitive improvement in the diseased brain. In rodents, neural progenitors are located in the dentate gyrus and the sub/periventricular zone. In the dentate gyrus the generation of newborn neurons is associated with plasticity, including regulation of memory. The role of subventricular zone neural precursors that migrate to the olfactory bulb is less characterized...
2017: Neurogenesis (Austin, Tex.)
https://www.readbyqxmd.com/read/28505260/evolution-of-two-short-interspersed-elements-in-callorhinchus-milii-chondrichthyes-holocephali-and-related-elements-in-sharks-and-the-coelacanth
#15
Andrea Luchetti, Federico Plazzi, Barbara Mantovani
Short interspersed elements (SINEs) are non-autonomous retrotransposons. Although they usually show fast evolutionary rates, in some instances highly conserved domains (HCDs) have been observed in elements with otherwise divergent sequences and from distantly related species. Here we document the life history of two HCD-SINE families in the elephant shark Callorhinchus milii, one specific to the holocephalan lineage (CmiSINEs) and another one (SacSINE1-CM) with homologous elements in sharks and the coelacanth (SacSINE1s, LmeSINE1s)...
May 13, 2017: Genome Biology and Evolution
https://www.readbyqxmd.com/read/28496324/preparation-of-zein-nanoparticles-by-using-solution-enhanced-dispersion-with-supercritical-co2-and-elucidation-with-computational-fluid-dynamics
#16
Sining Li, Yaping Zhao
Nanoparticles have attracted more and more attention in the medicinal field. Zein is a biomacromolecule and can be used as a carrier for delivering active ingredients to prepare controlled release drugs. In this article, we presented the preparation of zein nanoparticles by solution-enhanced dispersion by supercritical CO2 (SEDS) approach. Scanning electron microscopy and transmission electron microscopy were applied to characterize the size and morphology of the obtained particles. The nozzle structure and the CO2 flow rate greatly affected the morphology and the size of the particles...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28492708/shadows-of-doubt-the-uneasy-incorporation-of-identification-science-into-legal-determination-of-paternity-in-brazil
#17
Sueann Caulfield, Alexandra Minna Stern
The arrival of DNA paternity testing in the 1980s was met with great enthusiasm in the Brazilian courts. Yet, over the past two decades, Brazilian legal doctrine and jurisprudence have increasingly rejected DNA proof as the sine qua non for paternity cases. Instead, DNA paternity testing has generated mountains of litigation, as biological proof has been challenged by the argument that paternity is primarily "socio-affective". Leading family law specialists describe this new conception of paternity as an outcome of the "revolutionary" provisions of the 1988 Constitution, which recognizes the "pluralism" of family forms in modern society and guarantees equal family rights for all children...
May 8, 2017: Cadernos de Saúde Pública
https://www.readbyqxmd.com/read/28490897/glutathione-and-its-antiaging-and-antimelanogenic-effects
#18
Sinee Weschawalit, Siriwan Thongthip, Phanupong Phutrakool, Pravit Asawanonda
BACKGROUND: Previous studies showed that supplementation of reduced form of glutathione (GSH, 500 mg/d) has a skin-lightening efficacy in humans. This study was designed to evaluate the influences of both GSH and oxidized form (GSSG), at doses lower than 500 mg/d, on improving skin properties. PATIENTS AND METHODS: A randomized, double-blind, placebo-controlled, parallel, three-arm study was conducted. Healthy female subjects were equally randomized into three groups and took GSH (250 mg/d), GSSG (250 mg/d), or placebo orally for 12 weeks...
2017: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/28486975/evidence-for-transcriptome-wide-rna-editing-among-sus-scrofa-pre-1-sine-elements
#19
Scott A Funkhouser, Juan P Steibel, Ronald O Bates, Nancy E Raney, Darius Schenk, Catherine W Ernst
BACKGROUND: RNA editing by ADAR (adenosine deaminase acting on RNA) proteins is a form of transcriptional regulation that is widespread among humans and other primates. Based on high-throughput scans used to identify putative RNA editing sites, ADAR appears to catalyze a substantial number of adenosine to inosine transitions within repetitive regions of the primate transcriptome, thereby dramatically enhancing genetic variation beyond what is encoded in the genome. RESULTS: Here, we demonstrate the editing potential of the pig transcriptome by utilizing DNA and RNA sequence data from the same pig...
May 9, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28478701/exercise-habits-and-factors-associated-with-exercise-in-systemic-sclerosis-a-scleroderma-patient-centered-intervention-network-spin-cohort-study
#20
Marleine Azar, Danielle B Rice, Linda Kwakkenbos, Marie-Eve Carrier, Ian Shrier, Susan J Bartlett, Marie Hudson, Luc Mouthon, Serge Poiraudeau, Cornelia H M van den Ende, Sindhu R Johnson, Tatiana Sofia Rodriguez Reyna, Anne A Schouffoer, Joep Welling, Brett D Thombs
OBJECTIVE: Exercise is associated with improved health in many medical conditions. Little is known about the exercise habits of people with systemic sclerosis (SSc, or scleroderma). This study assessed the proportion of individuals with SSc who exercise and associations of demographic and disease variables with exercise. Additionally, the weekly amount of time spent exercising and the types of exercise performed were assessed among patients exercising. METHODS: The sample consisted of adult participants with SSc enrolled in the Scleroderma Patient-centered Intervention Network (SPIN) Cohort who completed baseline questionnaires from March 2014 through August 2015...
May 8, 2017: Disability and Rehabilitation
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