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Y Krylova, V Polyakova, I Kvetnoy, I Kogan, L Dzhemlikhanova, D Niauri, A Gzgzyan, E Ailamazyan
: Abstracts Background: Implantation failure of in vitro fertilization (IVF) cycles is recognized as one of key problems in contemporary reproductive medicine. Implantation itself is a multifactorial process and one can hardly expect to find a single criterion for the endometrium receptivity. Endometrium biopsy still remains the most applicable technique to diagnose abnormalities causing decrease or complete loss of endometrial receptivity. MATERIALS AND METHODS: We have studied 95 endometrial biopsy samples from 45 patient with I/II stage endometriosis and 40 controls from October 2014 to December 2015...
October 2016: Gynecological Endocrinology
K Tolidis, C Boutsiouki, P Gerasimou
AIM: Carbomer cement represents a novel glass-ionomer which gradually mineralises into fluoroapatite. Purpose of this study was to evaluate microleakage around restorations in deciduous teeth made with composite resin, conventional glass-ionomer cement, resin-modified glass-ionomer cement and carbomer/fluoroapatite-enhanced glass-ionomer cement. MATERIALS AND METHODS: A group of 40 primary upper canines, primary upper and lower molars was divided into 4 groups (n=10)...
September 2016: European Journal of Paediatric Dentistry: Official Journal of European Academy of Paediatric Dentistry
Xunzhi Li, Wenchuan Ma, Alexander A Shestopalov
This study describes formation of functional organic monolayers on hard and soft interfaces via a vapor-phase carbene insertion into Si-H and C-H bonds. We demonstrate that functional diazirine molecules can be used to form mono-molecular coatings on silicon, silicon nitride and urethane-acrylate polymers under mild vacuum conditions and exposure to UV light. We investigate the molecular coverage and the long-term stability of the resulting monolayers in air, isopropanol and water. Our results suggest that vapor-phase carbenylation can be used as a complementary technology to the traditional self-assembly, permitting functionalization of various passivated substrates with stable and functional molecular coatings under mild and scalable conditions...
October 19, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
Gabrielle Wong-Parodi, Wändi Bruine de Bruin
As the specter of climate change looms on the horizon, people will face complex decisions about whether to support climate change policies and how to cope with climate change impacts on their lives. Without some grasp of the relevant science, they may find it hard to make informed decisions. Climate experts therefore face the ethical need to effectively communicate to non-expert audiences. Unfortunately, climate experts may inadvertently violate the maxims of effective communication, which require sharing communications that are truthful, brief, relevant, clear, and tested for effectiveness...
October 17, 2016: Science and Engineering Ethics
Chi He, Gaoshan Men, Bitao Xu, Jin Cui, Jinglian Zhao
The adsorption process and mechanism of dibenzothiophene (DBT) over metal-loaded phenolic resin-derived activated carbon (PR-AC) were firstly reported in this work. The metal component (Zn, Ni, or Cu) was respectively introduced to PR-AC support via an impregnation method. The effects of adsorbent component, initial DBT concentration, liquid hourly space velocity (LHSV), adsorption time, and adsorption temperature on the adsorption capacity of the adsorbents were systematically investigated. Furthermore, the adsorption mechanism was discussed by analyzing the properties of adsorption product and saturated adsorbent as well as adsorption kinetics...
October 18, 2016: Environmental Science and Pollution Research International
Chandresakaran Prathipa, Lakshminarayanan Akilandeswari
There are eight possible pathways for the iron-tricarbonyl-assisted thermal electrocyclic ring opening of fluorocyclobutene due to variations in the orientation of the binding of Fe(CO)3 relative to the fluorine substituent (R1 or R2), stereoselectivity (conrotatory or disrotatory, i.e., C or D), and the torquoselectivity of fluorine (inward-facing or outward-facing, i.e., in or out). A density functional study revealed that the energetically favored pathway is R1 Din. Not only is the D mode favored energetically, but the in configuration was observed to be the lowest-lying mode of R1, despite the general tendency of fluorine substituents to prefer an out configuration...
November 2016: Journal of Molecular Modeling
Siavash Rahimi, Iolia Akaev, Costa Repanos, Peter A Brennan, Jean Daniel Dubois
Primary lingual intestinal-type adenocarcinomas are extremely rare with only a few cases described. A case with immunohistochemical expression of Androgen Receptor (AR) which was treated solely by chemo-radiotherapy is reported herein. A 54-year-old male was referred with symptoms of fullness in his tongue. Clinical examination showed an asymmetry of the tongue with a hard mass palpable within the middle of the tongue. Biopsy showed intestinal-type adenocarcinoma. The tumour showed positive staining with cytokeratin 7, cytokeratin 20, CDX2, AR, β-catenin and was mismatch repair proteins (MMR) proficient...
October 17, 2016: Head and Neck Pathology
Lequan Liu, Feng Zhou, Rajesh Kodiyath, Shigenori Ueda, Hideki Abe, Defa Wang, Youquan Deng, Jinhua Ye
CO poisoning of Pt catalysts is one of the major challenges to the commercialization of proton exchange membrane fuel cells. One promising solution is to develop CO-tolerant Pt-based catalysts. A facilely synthesized Pt/FeOx catalyst exhibited outstanding CO tolerance in the oxidation of H2 and electrochemical CO stripping. Light-off temperature of H2O formation over Pt/FeOx was achieved even below 30 °C in the presence of 3000 ppm CO at a space velocity of 18 000 mL g(-1)cat h(-1). For the electrochemical oxidation of CO, the onset and peak potentials decreased by 0...
October 18, 2016: Physical Chemistry Chemical Physics: PCCP
Jun Hyuk Son, Joon Hyuk Choi, Su-Ho Lim
PURPOSE: To present a rare case of a conjunctival hypertrophic scar presenting as eyelid mass after surgical treatment of a chalazion. CASE PRESENTATION: A 74-year-old man visited our clinic with severe ocular discomfort and excessive lacrimation since several months in his left eye accompanied by itching of the upper eyelid. Examination of the anterior segment revealed a 6 mm (horizontal) × 8 mm (vertical) round, immobile, hard, mushroom-shaped protruding mass on the tarsal conjunctiva of his left eye...
2016: SpringerPlus
Alice Willison, Vicki Tully, Peter Davey
The urine albumin creatinine ratio (UACR) detects abnormal levels of protein in the urine and should be performed annually to detect kidney disease in patients with diabetes mellitus. UK national audits show that 25% of patients do not have annual tests and our data suggested that some patients had more than one test per year. Data from 20 patients showed that 55% had more than one UACR test per year, with a total of 19 unnecessary tests at an estimated cost of £20,000 per year. However 20% had not had a UACR in the previous year, so unreliable testing was potentially causing harm as well as waste...
2016: BMJ Quality Improvement Reports
Peng Zheng, Ting Liu, Shouwu Guo
Superior first-cycle Coulomb efficiency (above 80%) is displayed by filter paper-derived micro-nano structure hard carbon, and it delivers a high reversible capacity of 286 mAh g(-1) after 100 cycles as the anode for Na-ion battery at 20 mA g(-1). These advantageous performance characteristics are attributed to the unique micro-nano structure, which reduced the first irreversible capacity loss by limiting the contact between the electrode and electrolyte, and enhanced the capacity by accelerating electron and Na-ion transfer through inter-connected nano-particles and nano-pores, respectively...
October 18, 2016: Scientific Reports
G Caleb Alexander, Geetha Iyer, Eleanor Lucas, Dora Lin, Sonal Singh
PURPOSE: We sought to evaluate whether exogenous testosterone therapy is associated with increased risk of serious cardiovascular events as compared to other treatments or placebo. METHODS: Study selection included randomized controlled trials (RCTs) and observational studies which enrolled men aged 18 years or older receiving exogenous testosterone for three or more days were included. The primary outcomes were death due to all causes, myocardial infarction and stroke...
October 14, 2016: American Journal of Medicine
Shai Tejman-Yarden, Bruria Ben-Zeev, Yuval Goldshmit, Georgia Sarquella-Brugada, Assi Cicurel, Uriel Katz, David Mishali, Michael Glikson
BACKGROUND: Pacing can be a successful treatment for pallid breath-holding spells, primarily in individuals with severe bradycardia. PATIENT DESCRIPTION: We describe an 18-month-old girl experiencing severe pallid breath-holding spells in whom repeated electrocardiographic, Holter, and electroencephalographic monitoring tests were all normal. RESULTS: Using a subcutaneous insertable cardiac monitor, severe bradycardia was detected during one of this girl's episodes...
June 25, 2016: Pediatric Neurology
Anna Elander, Christina Persson, Jan Lilja, Hans Mark
A staged protocol for isolated cleft palate (CPO), comprising the early repair of the soft palate at 6 months and delayed repair of the eventual cleft in the hard palate until 4 years, designed to improve maxillary growth, was introduced. CPO is frequently associated with additional congenital conditions. The study evaluates this surgical protocol for clefts in the soft palate (CPS) and for clefts in the hard and soft palate (CPH), with or without additional malformation, regarding primary and secondary surgical interventions needed for cleft closure and for correction of velopharyngeal insufficiency until 10 years of age...
October 18, 2016: Journal of Plastic Surgery and Hand Surgery
Joseph R Sachleben, Aashish N Adhikari, Grzegorz Gawlak, Robert J Hoey, Gaohua Liu, Andrzej Joachimiak, Gaetano T Montelione, Tobin R Sosnick, Shohei Koide
We determined the NMR structure of a highly aromatic (13%) protein of unknown function, Aq1974 from Aquifex aeolicus. The unusual sequence of this protein has a tryptophan content 5 times the normal (six tryptophan residues of 114 or 5.2% while the average tryptophan content is 1.0%) with the tryptophans occurring in a WXW motif. It has no detectable sequence homology with known protein structures. Although its NMR spectrum suggested that the protein was rich in β-sheet, upon resonance assignment and solution structure determination, the protein was found to be primarily α-helical with a small two-stranded β-sheet with a novel fold that we have termed an Aromatic Claw...
October 17, 2016: Protein Science: a Publication of the Protein Society
Donglei Chen, Henning Blom, Sophie Sanchez, Paul Tafforeau, Per E Ahlberg
The teeth of gnathostomes (jawed vertebrates) show rigidly patterned, unidirectional replacement that may or may not be associated with a shedding mechanism. These mechanisms, which are critical for the maintenance of the dentition, are incongruently distributed among extant gnathostomes. Although a permanent tooth-generating dental lamina is present in all chondrichthyans, many tetrapods and some teleosts, it is absent in the non-teleost actinopterygians. Tooth-shedding by basal hard tissue resorption occurs in most osteichthyans (including tetrapods) but not in chondrichthyans...
October 17, 2016: Nature
Javier López-Gómez, Ma Alejandra Salazar-Álvarez, Martin Granados-Garcia
INTRODUCTION: Thyroglosal duct cyst is a common anomaly with an incidence of 7% in adults, the rate of carcinoma in TGDC is 0.7-1.6%, and are extremely rare those originated in the hyoid bone. PRESENTATION OF CASE: A 60 years old male patient, had a hard mass in the anterior neck. CT revealed a hyoid tumor. Hyoid bone resection was performed, the pathological report show a conventional papillary carcinoma in bone tissue. We rule out primary tumor in thyroid gland...
September 29, 2016: International Journal of Surgery Case Reports
Xiang Lv, Zhuoyun Li, Jiagang Wu, Dingquan Xiao, Jianguo Zhu
It is a tough issue to develop dense and water resistant KNbO3 ceramics duo to high evaporation and hygroscopicity of K2O. Here, KNbO3: xZnO composite ceramics were used to successfully solve this problem, where ZnO particles were randomly distributed into KNbO3 matrix. The addition of ZnO hardly affects phase structure of KNbO3, and moreover the enhancement of electrical properties, thermal stability and aging characteristics was observed in KNbO3: xZnO composite ceramics. The composites possessed the maximum d33 of 120±5 pC/N, which is superior to pure KNbO3 (d33=80 pC/N)...
October 17, 2016: ACS Applied Materials & Interfaces
Yang Wang, Ting Li, Xuefei Wang, Piming Ma, Huiyu Bai, Weifu Dong, Yi Xie, Mingqing Chen
Melanin, a kind of well-known multifunctional biomacromolecules that are widely available in large quantities from a variety of natural sources. In this work, Polyurethane (PU) /melanin nanocomposites with enhanced tensile strength and toughness were successfully fabricated via in situ polymerization. It was found that the tensile strength (σ), elongation-at-break (εmax) and work to fracture (W) were increased from 5.6 MPa, 770% and 33 MJ/m3 for PU to 51.5 MPa, 1880% and 413 MJ/m3 for PU/melanin (2 wt %) nanocomposite, respectively...
October 17, 2016: Biomacromolecules
Rafael Laso-Pérez, Gunter Wegener, Katrin Knittel, Friedrich Widdel, Katie J Harding, Viola Krukenberg, Dimitri V Meier, Michael Richter, Halina E Tegetmeyer, Dietmar Riedel, Hans-Hermann Richnow, Lorenz Adrian, Thorsten Reemtsma, Oliver Lechtenfeld, Florin Musat
The anaerobic formation and oxidation of methane involve unique enzymatic mechanisms and cofactors that are believed to be all specific for C1-compounds. Here we found that an anaerobic thermophilic enrichment culture composed of dense consortia of archaea and bacteria apparently uses partly similar pathways to oxidize the C4-hydrocarbon butane. The archaea, proposed genus Candidatus Syntrophoarchaeum, showed the characteristic autofluorescence of methanogens, and contained highly expressed genes encoding enzymes similar to methyl-coenzyme M reductase (MCR)...
October 17, 2016: Nature
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