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https://www.readbyqxmd.com/read/28441800/-risk-for-metastasis-of-lymph-node-between-sternocleidomastoid-and-sternohyoid-muscle-in-papillary-thyroid-cancer
#1
G H Sun, N Qu, J Q Hu, R L Shi, T T Zhang, D Wen, Y L Wang, Y Wang, Y X Zhu, Q H Ji
Objective: To analyze the risk factors for metastasis of lymph nodes between sternocleidomastoid and sternohyoid muscle (LNSS) in papillary thyroid cancer (PTC). Methods: Papillary thyroid cancer patients with clinically positive lateral lymph node metastasis (cN1) who underwent surgery including LNSS dissection between May 1, 2013 and May 31, 2016 at the Department of Head and Neck Surgery, Fudan University Shanghai Cancer Center were retrospectively studied. Logistic regression analysis was performed to evaluate possible clinicopathological factors related to LNSS metastasis...
April 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28441775/progress-in-the-correlative-atomic-force-microscopy-and-optical-microscopy
#2
REVIEW
Lulu Zhou, Mingjun Cai, Ti Tong, Hongda Wang
Atomic force microscopy (AFM) has evolved from the originally morphological imaging technique to a powerful and multifunctional technique for manipulating and detecting the interactions between molecules at nanometer resolution. However, AFM cannot provide the precise information of synchronized molecular groups and has many shortcomings in the aspects of determining the mechanism of the interactions and the elaborate structure due to the limitations of the technology, itself, such as non-specificity and low imaging speed...
April 24, 2017: Sensors
https://www.readbyqxmd.com/read/28441749/using-wavelet-packet-transform-for-surface-roughness-evaluation-and-texture-extraction
#3
Xiao Wang, Tielin Shi, Guanglan Liao, Yichun Zhang, Yuan Hong, Kepeng Chen
Surface characterization plays a significant role in evaluating surface functional performance. In this paper, we introduce wavelet packet transform for surface roughness characterization and surface texture extraction. Surface topography is acquired by a confocal laser scanning microscope. Smooth border padding and de-noise process are implemented to generate a roughness surface precisely. By analyzing the high frequency components of a simulated profile, surface textures are separated by using wavelet packet transform, and the reconstructed roughness and waviness coincide well with the original ones...
April 23, 2017: Sensors
https://www.readbyqxmd.com/read/28441634/spatial-enhancement-of-ecg-using-diagnostic-similarity-score-based-lead-selective-multi-scale-linear-model
#4
Jiss J Nallikuzhy, S Dandapat
In this work, a new patient-specific approach to enhance the spatial resolution of ECG is proposed and evaluated. The proposed model transforms a three-lead ECG into a standard twelve-lead ECG thereby enhancing its spatial resolution. The three leads used for prediction are obtained from the standard twelve-lead ECG. The proposed model takes advantage of the improved inter-lead correlation in wavelet domain. Since the model is patient-specific, it also selects the optimal predictor leads for a given patient using a lead selection algorithm...
April 11, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/28441600/microplastics-in-the-antarctic-marine-system-an-emerging-area-of-research
#5
REVIEW
Catherine L Waller, Huw J Griffiths, Claire M Waluda, Sally E Thorpe, Iván Loaiza, Bernabé Moreno, Cesar O Pacherres, Kevin A Hughes
It was thought that the Southern Ocean was relatively free of microplastic contamination; however, recent studies and citizen science projects in the Southern Ocean have reported microplastics in deep-sea sediments and surface waters. Here we reviewed available information on microplastics (including macroplastics as a source of microplastics) in the Southern Ocean. We estimated primary microplastic concentrations from personal care products and laundry, and identified potential sources and routes of transmission into the region...
April 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28441592/characterization-of-major-natural-and-anthropogenic-source-profiles-for-size-fractionated-pm-in-yangtze-river-delta
#6
Pulong Chen, Tijian Wang, Mei Dong, Matthew Kasoar, Yong Han, Min Xie, Shu Li, Bingliang Zhuang, Mengmeng Li, Tunan Huang
Samples of size-fractionated particles were collected from local natural and anthropogenic sources in two industrial cities in the Yangtze River Delta, using either grab/resuspension sampling or ambient air sampling. The chemical characterizations of twenty one source profiles were obtained, based on elements (Al, As, Ca, Cd, Cr, Cu, Fe, K, Mg, Mn, Na, Pb and Zn), soluble ions (Cl(-), NO3(-), SO4(2-), NH4(+), K(+), Na(+) and Ca(2+)) and carbonaceous material such as organic carbon (OC) and elemental carbon (EC)...
April 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28441560/evolution-fangtastic-venoms-underpin-parasitic-mimicry
#7
Martin I Taylor
Venomous teeth are rare in fishes, which typically utilise spines for defence. A new study reveals the evolutionary origins of fangs and venom in the Nemophini blennies and shows that, in contrast to snakes and lizards, the fangs pre-date the venom.
April 24, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28441498/thin-wall-gan-inaln-multiple-quantum-well-tubes
#8
Christophe Durand, Jean-François Carlin, Catherine Bougerol, Bruno Gayral, Damien Salomon, Jean-Paul Barnes, Joel Eymery, Raphael Butte, Nicolas Grandjean
Thin-wall tubes composed of nitride semiconductors (III-N compounds) based on GaN/InAlN multiple quantum wells (MQWs) are fabricated by metal-organic vapor-phase epitaxy in a simple and full III-N approach. The synthesis of such MQW-tubes is based on the growth of N-polar c-axis vertical GaN wires surrounded by a core-shell MQW heterostructure followed by in situ selective etching using controlled H2/NH3 annealing at 1010°C to remove the inner GaN wire part. After this process, well-defined MQW-based tubes having non-polar m-plane orientation exhibit UV light near 330 nm up to room temperature, consistent with the emission of GaN/InAlN MQWs...
April 25, 2017: Nano Letters
https://www.readbyqxmd.com/read/28441401/ancient-genes-establish-stress-induced-mutation-as-a-hallmark-of-cancer
#9
Luis Cisneros, Kimberly J Bussey, Adam J Orr, Milica Miočević, Charles H Lineweaver, Paul Davies
Cancer is sometimes depicted as a reversion to single cell behavior in cells adapted to live in a multicellular assembly. If this is the case, one would expect that mutation in cancer disrupts functional mechanisms that suppress cell-level traits detrimental to multicellularity. Such mechanisms should have evolved with or after the emergence of multicellularity. This leads to two related, but distinct hypotheses: 1) Somatic mutations in cancer will occur in genes that are younger than the emergence of multicellularity (1000 million years [MY]); and 2) genes that are frequently mutated in cancer and whose mutations are functionally important for the emergence of the cancer phenotype evolved within the past 1000 million years, and thus would exhibit an age distribution that is skewed to younger genes...
2017: PloS One
https://www.readbyqxmd.com/read/28441334/peptidyl-transferase-center-and-the-emergence-of-the-translation-system
#10
Savio Torres de Farias, Thais Gaudêncio Rêgo, Marco V José
In this work, the three-dimensional (3D) structure of the ancestral Peptidyl Transferase Center (PTC) built by concatamers of ancestral sequences of tRNAs was reconstructed, and its possible interactions with tRNAs molecules were analyzed. The 3D structure of the ancestral PTC was also compared with the current PTC of T. thermophilus. Docking experiments between the ancestral PTC and tRNAs suggest that in the origin of the translation system, the PTC functioned as an adhesion center for tRNA molecules. The approximation of tRNAs charged with amino acids to the PTC permitted peptide synthesis without the need of a genetic code...
April 25, 2017: Life
https://www.readbyqxmd.com/read/28441277/symptomatic-epidermoid-cyst-presenting-as-a-paravaginal-mass
#11
Abigail P Davenport, Carl W Zimmerman, Bryan J Hill, Jeffrey Davis
BACKGROUND: Ischioanal fossa epidermoid cysts are uncommon masses of epithelial origin and are believed to be either congenital or the result of trauma. Surgical excision is preferred as opposed to incision and drainage because these masses may enlarge, recur, become infected, or undergo malignant transformation. CASE: This report describes a case of a 62-year-old woman who presented for evaluation of vaginal and perineal discomfort and fullness. Physical examination and computed tomography scan revealed a 7...
May 2017: Female Pelvic Medicine & Reconstructive Surgery
https://www.readbyqxmd.com/read/28441166/minimally-invasive-organ-preserving-surgery-for-large-submucosal-tumors-in-the-abdominal-esophagus
#12
Eiji Kanehira, Takashi Tanida, Aya Kamei, Kodai Takahashi
BACKGROUND: Surgical resection of submucosal tumors (SMTs) in the abdominal esophagus is not standardized. Enucleation may be a minimally invasive option, whereas its oncological validity is not very clear. Moreover, how to treat the esophageal wall defect after enucleation and necessity of additional antireflux procedure are also undetermined. METHODS: In 13 patients with a SMT originating the abdominal esophagus laparoscopic enucleation was performed with preserving the integrity of submucosa...
April 24, 2017: Surgical Laparoscopy, Endoscopy & Percutaneous Techniques
https://www.readbyqxmd.com/read/28441153/discharge-criteria-for-the-late-preterm-infant-a-review-of-the-literature
#13
Jenny M Quinn, Marteen Sparks, Sheila M Gephart
BACKGROUND: Standardized late preterm infant (LPI) discharge criteria ensure best practice and help guide the neonatal provider to determine the appropriate level of care following birth. However, the location can vary from the well newborn setting to the neonatal intensive care unit (NICU). PURPOSE: The purpose of this review is to examine differences in LPI discharge criteria between the well newborn setting and the NICU by answering the clinical questions, "What are the recommended discharge criteria for the LPI and do they differ if admitted to the well newborn setting versus the NICU?" SEARCH STRATEGY: Databases searched include CINAHL, TRIP, PubMed, and the Cochrane Library...
April 24, 2017: Advances in Neonatal Care: Official Journal of the National Association of Neonatal Nurses
https://www.readbyqxmd.com/read/28441147/can-the-generic-antiretroviral-industry-support-access-to-a-universal-antiretroviral-regimen
#14
Carolyn D Amole, Caroline Middlecote, Vineet R Prabhu, N Kumarasamy
PURPOSE OF REVIEW: The generic antiretroviral (ARV) industry played a critical role in the massive scale-up of HIV treatment in low-income and middle-income countries since 2000. As the global community looks ahead to a universal antiretroviral regimen, this article considers the industry's role in supporting universal access to affordable, simpler, more durable, and tolerable HIV treatment regimens. RECENT FINDINGS: Generic manufacturers made treatment scale-up in low-income and middle-income countries possible through reducing prices, combining molecules from different originator companies to develop optimal fixed-dose combinations, and investing in production capacity to meet escalating demand...
April 24, 2017: Current Opinion in HIV and AIDS
https://www.readbyqxmd.com/read/28440959/qualitative-research-in-teen-experiences-living-with-food-induced-anaphylaxis-a-meta-aggregation
#15
REVIEW
Sara F Johnson, Roberta L Woodgate
AIM: To describe the central experiences of teens living with Food-Induced Anaphylaxis as a first step in responding to health care needs in this population. BACKGROUND: As prevalence of allergy increases and commonly-outgrown allergies persist longer, chronic management for teens becomes increasingly important. This review seeks to understand how teens experience living with Food-Induced Anaphylaxis. DESIGN: Meta-aggregation for qualitative systematic review, to create synthesis for clinical improvement; guided by Joanna Briggs Institute methods and their Qualitative Assessment and Review Instrument...
April 25, 2017: Journal of Advanced Nursing
https://www.readbyqxmd.com/read/28440956/doctoral-snobbery-justified-or-just-elitism
#16
EDITORIAL
Melanie Birks, Roger Watson
Doctoral snobbery exists. It's a thing (Parnell, 2016). It's an extension of 'academic snobbery' (Martin & Sorensen, 2014) more generally, and probably originates from 'title snobbery' (Valverde, Mueller, Paciotti, & Conway, 2016). Successfully completing a doctoral qualification is no small achievement and so some degree of elitism is probably reasonable. But is it reasonable for there to be an elitist division between the traditional PhD and the relative newcomer, the professional doctorate? And what about the doctorate in nursing practice (DNP) now apparently overtaking the PhD in the USA? Our recent participation in a round table on doctoral education in Hong Kong prompted us to explore the issue further and, by implication, to invite further comment...
April 25, 2017: Journal of Advanced Nursing
https://www.readbyqxmd.com/read/28440943/microplastics-as-a-vector-of-hydrophobic-contaminants-importance-of-hydrophobic-additives
#17
Jung-Hwan Kwon, Sein Chang, Sang Hee Hong, Won Joon Shim
Despite a recent boom in research on the environmental fate, distribution, and harmful effects of chemical substances associated with marine plastic debris, no consensus has been reached on whether chemicals originating from microplastics cause serious environmental harm. For the risk assessment of chemical contaminants associated with microplastics, it would be useful to group organic chemicals into 2 categories: additives and nonadditives. Whereas plastic particles are not likely to be diffuse sources of chemicals that are not intentionally added to plastic products, continuous leaching of additives would result in higher concentrations, at least at a local scale...
May 2017: Integrated Environmental Assessment and Management
https://www.readbyqxmd.com/read/28440786/magnetic-and-transport-properties-of-layered-compound-ce-sub-2-sub-te-sub-5-sub
#18
Dong Chen, Shuai Zhang, Yang Huaixin, Jianqi Li, Gen-Fu Chen
Ce<sub>2</sub>Te<sub>5</sub> single crystals were successfully grown using RbCl/LiCl flux method. The structure of Ce<sub>2</sub>Te<sub>5</sub> can be viewed as a combination of CeTe<sub>2</sub> and CeTe<sub>3</sub>. The experimental results of magnetic susceptibility <i>χ</i>(<i>T</i>), isothermal magnetization <i>M</i>(<i>H</i>), electrical resistivity <i>ρ</i>(<i>T</i>), and heat capacity <i>C</i>(<i>T</i>) show two clear anomalies at 5...
April 25, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28440665/reprogramming-of-oncogene-expression-in-gingival-mesenchymal-stem-cells-following-long-term-culture-in-vitro
#19
Agnese Gugliandolo, Thangavelu Soundara Rajan, Domenico Scionti, Francesca Diomede, Placido Bramanti, Emanuela Mazzon, Oriana Trubiani
Mesenchymal stem cells (MSCs) are a promising resource for stem cell therapy for the treatment of different neurodegenerative disorders. In particular, dental MSCs, given their origin from neural crest and their proneness toward neuronal differentiation, may be more suitable for transplantation. However, if MSCs can undergo spontaneous transformation and give rise to tumor is still debated. Data about transcriptional regulation of oncogenes in MSCs following in vitro expansion are not available. In this work, we compared gene expression levels of oncogenes in gingival-derived MSCs at passage number 10 and 41...
April 25, 2017: Cellular Reprogramming
https://www.readbyqxmd.com/read/28440644/direct-observation-of-the-ultrafast-evolution-of-open-shell-biradical-in-photochromic-radical-dimer
#20
Yoichi Kobayashi, Hajime Okajima, Hikaru Sotome, Takeshi Yanai, Katsuya Mutoh, Yusuke Yoneda, Yasuteru Shigeta, Akira Sakamoto, Hiroshi Miyasaka, Jiro Abe
Delocalized biradicals have been extensively studied because of fundamental interests to singlet biradicals and several potential applications such as to two-photon absorption materials. However, many of the biradical studies only focus on the static properties of the rigid molecular structures. It is expected that the biradical properties of the delocalized biradicals are sensitive to the subtle changes of the molecular structures and their local environments. Therefore, the studies of the dynamic properties of the system will give further insight into stable radical chemistry...
April 25, 2017: Journal of the American Chemical Society
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