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Ho Sun Kim, Joon-Shik Shin, Jinho Lee, Yoon Jae Lee, Me-Riong Kim, Young-Hyeon Bae, Ki Byung Park, Eun-Jung Lee, Joo-Hee Kim, In-Hyuk Ha
BACKGROUND: Osteoarthritis is a significant burden on personal health and for social cost, and its prevalence is rising. Recent research has revealed an association between osteoarthritis and cardiovascular disease, and this study uses the Framingham risk score (FRS), which is widely used as a composite index of cardiovascular risk factors, to investigate the association between osteoarthritis and various cardiovascular risk factors. METHODS: A total 9,514 participants aged 50 years or older who received knee X-ray diagnosis of the 5th Korean National Health and Nutrition Examination Survey (total surveyees = 24,173) released by the Korean Centers for Disease Control and Prevention was included for analysis...
2016: PloS One
Sook-Yee Chong, Oliver Röhrle
A satisfactorily fitted socket interacts dynamically with the stump in order to support body weight, transmit load effectively, enhance dynamic stability, and enable the control and stabilization of the residual limb. The internal dynamics occurring within a socket is important in determining optimal fit. Many measurement and imaging techniques, such as X-rays, have been utilized to investigate the movement of the residual femur within the stump during gait. However, due to associated health risks and costs, none of the current techniques have been extended to clinical prosthetics...
2016: PloS One
Chenting Yan, Zhifang Li, Xu-Qiong Xiao, Ningka Wei, Qiong Lu, Mitsuo Kira
A fluorostannylenoid (Cs(+) [R2 SnF](-) (9), R2 =(TMS)2 CCH2 CH2 C(TMS)2 ) was prepared by reacting a stable dialkylstannylene (R2 Sn (8), R2 =(TMS)2 CCH2 CH2 C(TMS)2 ) with cesium fluoride at room temperature in THF. While 9 is stable in THF and DME, removal of the solvent leads to the regeneration of stannylene 8. No reaction occurred when 8 was treated with CsF in a hydrocarbon solvent. Addition of dibenzo-21-crown-7 ether to the THF solution of stannylenoid 9 followed by usual workup affords the corresponding crystalline stannylenoid crown ether complex, the X-ray structural analysis of which revealed a fluorine-bridged contact ion-pair structure...
October 20, 2016: Angewandte Chemie
Franziska Fischer, Sebastian Greiser, Dietmar Pfeifer, Christian Jäger, Klaus Rademann, Franziska Emmerling
Benzamide has been known for its polymorphism for almost 200 years. Three polymorphic forms are described. To date, it was only possible to crystallize a metastable form in a mixture together with the thermodynamically most stable form I. A complete transformation of form I into the metastable form III by mechanochemical treatment has been achieved. Catalytic amounts of nicotinamide seeds were used to activate the conversion by mechanochemical seeding. NMR experiments indicated that the nicotinamide molecules were incorporated statistically in the crystal lattice of benzamide form III during the conversion...
October 20, 2016: Angewandte Chemie
Narcis Avarvari, Thomas Biet, Kévin Martin, Jihane Hankache, Nora Hellou, Andreas Hauser, Thomas Bürgi, Nicolas Vanthuyne, Tal Aharon, Marco Caricato, Jeanne Crassous
Introduction of heterocycles in the helical skeleton of helicenes allows modulation of their redox, chiroptical and photophysical properties. Herein, we describe the straightforward preparation and structural characterization by single crystal X-ray diffraction of thiadiazole-[7]helicene, which has been resolved into (M) and (P) enantiomers by chiral HPLC, together with its S-shaped double [4]helicene isomer, as well as the smaller congeners thiadiazole-[5]helicene and benzothiadiazole-anthracene. A copper(II) complex with two thiadiazole-[5]helicene ligands has been structurally characterized and it shows the presence of both (M) and (P) isomers coordinated to the metal centre...
October 20, 2016: Chemistry: a European Journal
Parthasarathi Dastidar, Koushik Sarkar
A mixed ligand approach was exploited to synthesize a new series of MnII based coordination polymers (CPs), namely, CP1 {[Mn(-dpa)(-4,4-bp)]MeOH}α, CP2 {[Mn3(-dpa)3(2,2-bp)2]}α, CP3 {[Mn3(-dpa)3(1,10-phen)2]2H2O}α, CP4 {[Mn(-dpa)(-4,4-bpe)1.5]H2O}α, CP5 {[Mn2(-dpa)2(-4,4-bpe)2]½DEF}α and CP6 {[Mn(-dpa)(-4,4-bpe)1.5]½DMA}α, [dpa = 3,5-dicarboxy phenyl azide, 2,2-bp = 2,2-bipyridine, 1,10-phen = 1,10-phenanthroline, 4,4-bpe = 1,2-bis(4-pyridyl)ethylene, 4,4-bp = 4,4-bipyridine, DEF = N,N-diethylformamide, DMA = N,N-dimethylacetamide] to develop multifuntional CPs...
October 20, 2016: Chemistry: a European Journal
Agnieszka Mierczynska-Vasilev, Paul A Smith
The adsorption of macromolecules on solid surfaces is of great importance in the field of nanotechnology, biomaterials, biotechnological, and food processes. In the field of oenology adsorption of wine macromolecules such as polyphenols, polysaccharides, and proteins is much less desirable on membrane materials because of fouling and reduced filtering performance. On the other hand, adsorption of these molecules on processing aids is very beneficial for achieving wine clarity and stability. In this article, the effect of surface chemical functionalities on the adsorption of white, rosé, and red wine constituents was evaluated...
October 18, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Kpp Abhilash, P R Mannam, K Rajendran, R A John, P Ramasami
BACKGROUND AND RATIONALE: Respiratory system involvement in scrub typhus is seen in 20-72% of patients. In endemic areas, good understanding and familiarity with the various radiologic findings of scrub typhus are essential in identifying pulmonary complications. MATERIALS AND METHODS: Patients admitted to a tertiary care center with scrub typhus between October 2012 and September 2013 and had a chest X ray done were included in the analysis. Details and radiographic findings were noted and factors associated with abnormal X-rays were analyzed...
October 2016: Journal of Postgraduate Medicine
Sahar Soltan, Hoda Jafari, Shahrara Afshar, Omid Zabihi
In the present study, silicon dioxide (SiO2) nanoparticles were loaded to titanium dioxide (TiO2) nano-particles by sol-gel method to make a high porosity photocatalyst nano-hybrid. These photocatalysts were synthesized using titanium tetrachloride and tetraethyl orthosilicate as titanium and silicon sources, respectively, and characterized by X-ray powder diffraction (XRD) and scanning electron microscope methods. Subsequently, the optimizations of the component and operation conditions were investigated. Then, nano-sized TiO2 and TiO2-SiO2 were supported on concrete bricks by the dip coating process...
October 2016: Water Science and Technology: a Journal of the International Association on Water Pollution Research
Mona El-Sayed, Gh Eshaq, A E ElMetwally
In our study, Mg-Al-Zn mingled oxides were prepared by the co-precipitation method. The structure, composition, morphology and thermal stability of the synthesized Mg-Al-Zn mingled oxides were analyzed by powder X-ray diffraction, Fourier transform infrared spectrometry, N2 physisorption, scanning electron microscopy, differential scanning calorimetry and thermogravimetry. Batch experiments were performed to study the adsorption behavior of cobalt(II) and nickel(II) as a function of pH, contact time, initial metal ion concentration, and adsorbent dose...
October 2016: Water Science and Technology: a Journal of the International Association on Water Pollution Research
Hillary W Garner, Michelle M Paturzo, Gabriela Gaudier, Perry J Pickhardt, Daniel E Wessell
OBJECTIVE: The purpose of this study is to investigate the variation in attenuation values (expressed as Hounsfield units) for L1 vertebral body trabecular bone at different tube voltages used in dual-energy CT (DECT) and to remind physicians to consider changes in attenuation values when they approach opportunistic screening for osteoporosis. MATERIAL AND METHODS: Consecutive patients who underwent DECT examination of the abdomen and pelvis for suspected urolithiasis were included in the study...
October 20, 2016: AJR. American Journal of Roentgenology
Junki Tanabe, Daisuke Taura, Naoki Ousaka, Eiji Yashima
The photoirradiation of 9-phenylethynylanthracene in degassed chloroform and benzene afforded not only a [4 + 2]-anti Diels-Alder addition dimer, but also a [4 + 4]-anti-dimer as a minor product for the first time as revealed by single-crystal X-ray analysis, while the anthracene residue was quantitatively oxidised in undegassed dilute chloroform, giving the corresponding endoperoxides. The photochemical reactions of carboxylic acid monomers bearing a 9-phenylethynylanthracene unit at one and both ends were further investigated in the presence and absence of the complementary amidine dimer as the template...
October 20, 2016: Organic & Biomolecular Chemistry
Sergio Campana
No abstract text is available yet for this article.
October 19, 2016: Nature
Jimmy A Irwin, W Peter Maksym, Gregory R Sivakoff, Aaron J Romanowsky, Dacheng Lin, Tyler Speegle, Ian Prado, David Mildebrath, Jay Strader, Jifeng Liu, Jon M Miller
A flaring X-ray source was found near the galaxy NGC 4697 (ref. 1). Two brief flares were seen, separated by four years. During each flare, the flux increased by a factor of 90 on a timescale of about one minute. There is no associated optical source at the position of the flares, but if the source was at the distance of NGC 4697, then the luminosities of the flares were greater than 10(39) erg per second. Here we report the results of a search of archival X-ray data for 70 nearby galaxies looking for similar flares...
October 19, 2016: Nature
M J Blans, H Endeman, F H Bosch
BACKGROUND: After insertion of a central venous catheter (CVC) a conventional chest X-ray (CXR) is usually taken to check for complications and correct position. Ultrasound might be equally effective as CXR and is less time consuming. We studied the use of ultrasound versus CXR after insertion of a CVC in general ward patients. METHODS: General ward patients in need of a CVC were included. CVCs were inserted under direct ultrasound guidance. After insertion, ultrasound was performed and compared with CXR to check for complications and position...
October 2016: Netherlands Journal of Medicine
Jiaqing Zhuang, Qi-Jun Sun, Ye Zhou, Suting Han, Li Zhou, Yan Yan, Haiyan Peng, Shishir Venkatesh, Wei Wu, Robert Kwok-Yiu Li, Vellaisamy A L Roy
Previous investigations on rare-earth oxides (REOs) reveal their high possibility as dielectric films in electronic devices, while complicated physical methods impede their developments and applications. Herein, we report a facile route to fabricate 16 REOs thin insulating films through a general solution process and their applications in low-voltage thin-film transistors as dielectrics. The formation and properties of REOs thin films are analyzed by atomic force microscopy (AFM), X-ray diffraction (XRD), spectroscopic ellipsometry, water contact angle measurement, X-ray photoemission spectroscopy (XPS) and electrical characterizations, respectively...
October 20, 2016: ACS Applied Materials & Interfaces
Gyu Ri Hong, Sun Sook Lee, Yejin Jo, Min Jun Choi, Yun Chan Kang, Beyong-Hwan Ryu, Kwun Bum Chung, Youngmin Choi, Sunho Jeong
The solution-processable oxide semiconductors have gained the paramount attention with a possibility of forming cost-effectively semiconducting channel layers with moderate field-effect mobility for the application to thin-film transistors (TFTs). To date, a variety of compositional oxide material and post-annealing techniques have been demonstrated based on a spin-coating method, well-suited for a small-sized device fabrication along with a significant material loss in a large-area process. In this study, we report, for the first time report, a simple bar-coating process of soluble metal oxide semiconductors, consuming the 0...
October 20, 2016: ACS Applied Materials & Interfaces
Matthias Lehmann, Philipp Maier, Matthias Grüne, Markus Hügel
The molecular design of crowded hexasubstituted star mesogens based on a benzene core and alternating substitution with oligo(phenylenevinylene) arms and aryl units generates free space between the conjugated arm scaffolds. Various arylcarboxy building blocks, decorated with alkoxy chains have been incorporated in the void by mixing, hydrogen bonding or covalent bonds to the aryl groups. The mesogens assemble in columnar stacks ranging from soft crystals to rectangular and hexagonal columnar liquid crystals, revealed by polarized optical microscopy, differential scanning calorimetry, X-ray scattering and modelling...
October 20, 2016: Chemistry: a European Journal
Kai Li, Jiangming Yu, Youtao Xie, Mingyu You, Liping Huang, Xuebin Zheng
Ideal coatings for orthopedic implants should be able to induce excellent osseointegration with host bone tissue, which requires good osteogenic responses and limited inflammatory reactions. Cerium oxide (CeO2) ceramics have anti-oxidative properties and can be used to decrease mediators of inflammation, making them attractive for biomedical application. In this study, two kinds of CeO2 incorporated calcium silicate coatings (CS-10Ce and CS-30Ce) were prepared via plasma spraying technique, and the effects of CeO2 addition on the responses of bone mesenchymal stem cells (BMSCs) and RAW264...
October 20, 2016: Biological Trace Element Research
David Gøttsche, Thomas Lind, Thorbjørn Christiansen, Henrik M Schrøder
INTRODUCTION: Revision total knee arthroplasty with a cementless metaphyseal sleeve is suggested to be used without stem in revision total knee arthroplasty (rTKA). To the best of our knowledge, no papers investigating this have been published. The purpose of this study was to evaluate clinical outcome. METHOD: In this retrospective study, 71 patients operated with rTKA with sleeves without stem in the period 2009-2011 were identified; 63 were examined. All patients with the prosthesis still in place were invited to a medical examination including X-rays...
October 19, 2016: Archives of Orthopaedic and Trauma Surgery
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