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Antonio Micali, Anna M Roszkowska, Elisa I Postorino, Laura Rania, Emanuela Aragona, Edward Wylegala, Anna Nowinska, Antonio Ieni, Sebastiano Calimeri, Antonina Pisani, Pasquale Aragona, Domenico Puzzolo
PURPOSE: Corneal opacities rarely occur in multiple myeloma (MM). Our study correlates the findings of in vivo confocal microscopy (IVCM), a useful diagnostic tool, with histopathological features of corneal opacities appearing in a patient with MM. METHODS: Case report. RESULTS: A 53-year-old man developed corneal opacities in both eyes, more pronounced in the left eye. After IVCM examination, he underwent penetrating keratoplasty in the left eye, and the button was processed for light and electron microscopy and immunohistochemistry...
October 5, 2016: Cornea
Sunil Taneja, Pramod Kumar, Ajay Duseja, Virendra Singh, Radha K Dhiman, Yogesh Chawla
No abstract text is available yet for this article.
September 2016: Journal of Clinical and Experimental Hepatology
Nicola Cicero, Clara Naccari, Gaetano Cammilleri, Giuseppe Giangrosso, Antonello Cicero, Teresa Gervasi, Alessia Tropea, Ambrogina Albergamo, Vincenzo Ferrantelli
The decline of pollinating species is correlated to the extensive use of neonicotinoids against pest insects for crop protection. In this study, the concentrations of neonicotinoid insecticides were determined in honeybees, honeycomb and honey samples, collected in Spring 2015 (blooming period) from different areas in Sicily (IT), to carry out an evaluation of bees products' safety and an overview of neonicotinoid contamination in beekeeping. The results obtained showed only the presence of clothianidin in bee samples and these concentrations don't represent a risk for bees' vitality and safety...
October 13, 2016: Natural Product Research
Wei Liu, Jing-Yao Liu, Mao-Sheng Miao
Tuning electronic structures and properties through chemical modifications has become the focus of recent research on graphene. The adsorption of metal atoms on graphene showed strong potential but is limited due to weak binding. On the other hand, macrocyclic molecules are well known for their strong and selective binding with metal atoms in solutions through coordination bonds. The alliance of the two substances will largely benefit the two parallel fields: it will provide a scaffold for coordination chemistry as well as a controllable method for tuning the electronic structure of graphene through strong binding with metals...
October 12, 2016: Nanoscale
Kun Cai, Jing Luo, Yiru Ling, Jing Wan, Qing-Hua Qin
Graphene is an active element used in the design of nano-electro-mechanical systems (NEMS) owing to its excellent in-plane physical properties on mechanical, electric and thermal aspects. Considering a component requiring negative Poisson's ratio in NEMS, a graphene kirigami (GK) containing periodic re-entrant honeycombs is a natural option. This study demonstrates that a GK with specific auxetic property can be obtained by adjusting the sizes of its honeycombs. Using molecular dynamics experiments, the size effects on the auxetic behaviour of GK are investigated...
October 12, 2016: Scientific Reports
Samir Moura Kadri, Rodrigo Zaluski, Ricardo de Oliveira Orsi
In this study, wild honey samples extracted by two different methods (centrifugation and pressed processing) were characterized and compared based on their physicochemical, and nutritional properties, macro- and micro-mineral contents, and pollen counts. Twelve colonies of Africanized Apis mellifera were used; six honey samples were obtained by centrifugation and six by honeycomb press. All physicochemical parameters of honey samples (moisture, pH, total acidity, ash, dry matter, and qualitative absence of hydroxymethylfurfural) were within the limits established by EU legislation, and all parameters in pressed honey were superior (p<0...
March 1, 2017: Food Chemistry
Cindy Mai, Stijn E Verleden, John E McDonough, Stijn Willems, Walter De Wever, Johan Coolen, Adriana Dubbeldam, Dirk E Van Raemdonck, Eric K Verbeken, Geert M Verleden, James C Hogg, Bart M Vanaudenaerde, Wim A Wuyts, Johny A Verschakelen
Purpose To elucidate the underlying lung changes responsible for the computed tomographic (CT) features of idiopathic pulmonary fibrosis (IPF) and to gain insight into the way IPF proceeds through the lungs and progresses over time. Materials and Methods Micro-CT studies of tissue cores obtained from explant lungs were examined and were correlated 1:1 with a CT study obtained immediately before transplantation. Samples for histologic analysis were obtained from selected cores. Results In areas with no or minimal abnormalities on CT images, small areas of increased attenuation located in or near the interlobular septa can be seen on micro-CT studies...
October 6, 2016: Radiology
Hui Zhang, Yuqi Li, Yaoguang Xu, Zexiang Lu, Lihui Chen, Liulian Huang, Mizi Fan
To deal with marine oil spillage and chemical leakage issues, a highly efficient absorbent (cellulose based aerogel) with a low density (ρ < 0.034 g cm(-3), φ > 98.5%) and high mechanical strength was fabricated via a novel physical-chemical foaming method, plasma treatment and subsequent silane modification process. This aerogel has a perfect 3D skeleton and interconnected pores similar to honeycomb, which are favorable to oil adsorption and storage. More importantly, without introducing additional micro/nanoparticles, the rough micro/nano structure of the surface was directly constructed using plasma irradiation in this study...
October 12, 2016: Physical Chemistry Chemical Physics: PCCP
Shutaro Hori, Kazuaki Shimada, Yoshinori Ino, Seiji Oguro, Minoru Esaki, Satoshi Nara, Yoji Kishi, Tomoo Kosuge, Yukinori Hattori, Aoi Sukeda, Yuko Kitagawa, Yae Kanai, Nobuyoshi Hiraoka
As macroscopic appearance represents tumor microenvironment, it may also reflect the biological and clinicopathological characteristics of a cancer. The aim of the study was to evaluate the clinicopathological significance of the gross appearance of pancreatic ductal adenocarcinoma (PDA). We investigated fresh macroscopic features in 352 cases of PDA and their clinicopathological significance. Three unique gross features were found: a honeycomb-like appearance (diffusely distributed microcysts and interstitial fibrotic thickening), macroscopic necrosis, and a tube/branching structure (apparent small cylindrical or linear structure)...
October 5, 2016: Virchows Archiv: An International Journal of Pathology
Suparaporn Wangkaew, Juntima Euathrongchit, Pittaporn Wattanawittawas, Nuntana Kasitanon
BACKGROUND: The correlation of changes (delta: Δ) of high-resolution computed tomography (HRCT) score with the Δ of other clinical variables has not been well studied. The purpose of this study was to determine the correlation of Δ HRCT score with Δ percent predicted forced vital capacity (%pFVC), Δ modified Rodnan Skin Score (mRSS), Δ erythrocyte sedimentation rate (ESR), and Δ percent of oxygen saturation at room air (%SpO2) in patients with early systemic sclerosis (SSc). METHODS: We used an inception cohort of early-SSc patients seen at the Rheumatology Clinic, Chiang Mai University, Thailand, between January 2010 and June 2014...
August 2016: Quantitative Imaging in Medicine and Surgery
Marco Bertamini, Michael H Herzog, Nicola Bruno
We present a series of patterns, in which texture is perceived differently at fixation in comparison to the periphery, such that a physically uniform stimulus yields a nonuniform percept. We call this the Honeycomb illusion, and we discuss it in relation to the similar Extinction illusion (Ninio & Stevens, 2000). The effect remains strong despite multiple fixations, dynamic changes, and manipulations of the size of texture elements. We discuss the phenomenon in relation to how vision achieves a detailed and stable representation of the environment despite changes in retinal spatial resolution and dramatic changes across saccades...
July 2016: I-Perception
Chun Y Chow, Régis Guillot, Eric Rivière, Jeff W Kampf, Talal Mallah, Vincent L Pecoraro
The structural characterization and magnetic properties of three related 9-metallacrown-3 (9-MC-3) structures are reported. Each of these iron complexes is shown to exhibit significant magnetic refrigerant properties. Fe(III)(acetate)3[9-MCFe(III)N(shi)-3](MeOH)3·MeOH·7H2O (1-OAc) and Fe(III)(benzoate)3[9-MCFe(III)N(shi)-3](MeOH)3·MeOH·4H2O (1-OBz) are structurally analogous tetranuclear iron(III) clusters which exhibit drastically different magnetic properties, due to differences in intermolecular and intramolecular π interactions which affect superexchange...
October 4, 2016: Inorganic Chemistry
Yuta Mashimo, Makiko Fukui, Ryuichiro Machida
The egg structure of Paterdecolyus yanbarensis was examined using light, scanning electron and transmission electron microscopy. The egg surface shows a distinct honeycomb pattern formed by exochorionic ridges. Several micropyles are clustered on the ventral side of the egg. The egg membrane is composed of an exochorion penetrated with numerous aeropyles, an endochorion, and an extremely thin vitelline membrane. The endochorion is thickened at the posterior egg pole, probably associated with water absorption...
September 29, 2016: Arthropod Structure & Development
Caterina Longo
The aim of the current review is to provide an overview of the use of reflectance confocal microscopy to detect early skin aging signs. This new imaging tool holds the promise to morphologically explore the epidermis and upper dermis at nearly histologic resolution and over time. The main confocal findings of aged skin include the presence of irregular honeycombed pattern, linear skin furrows, mottled pigmentation, and distinct collagen types (coarse and huddled).
October 2016: Dermatologic Clinics
Gábor B Halász, Natalia B Perkins, Jeroen van den Brink
We calculate the resonant inelastic x-ray scattering (RIXS) response of the Kitaev honeycomb model, an exactly solvable quantum-spin-liquid model with fractionalized Majorana and flux excitations. We find that the fundamental RIXS channels, the spin-conserving (SC) and the non-spin-conserving (NSC) ones, do not interfere and give completely different responses. SC RIXS picks up exclusively the Majorana sector with a pronounced momentum dispersion, whereas NSC RIXS also creates immobile fluxes, thereby rendering the response only weakly momentum dependent, as in the spin structure factor measured by inelastic neutron scattering...
September 16, 2016: Physical Review Letters
A Koitzsch, C Habenicht, E Müller, M Knupfer, B Büchner, H C Kandpal, J van den Brink, D Nowak, A Isaeva, Th Doert
Novel ground states might be realized in honeycomb lattices with strong spin-orbit coupling. Here we study the electronic structure of α-RuCl_{3}, in which the Ru ions are in a d^{5} configuration and form a honeycomb lattice, by angle-resolved photoemission, x-ray photoemission, and electron energy loss spectroscopy supported by density functional theory and multiplet calculations. We find that α-RuCl_{3} is a Mott insulator with significant spin-orbit coupling, whose low energy electronic structure is naturally mapped onto J_{eff} states...
September 16, 2016: Physical Review Letters
Ying Wu, Lei Tian, Li-Qiang Wang, Yi-Fei Huang
This was a prospective controlled clinical trial. 48 myopia patients (96 eyes) were included in this study. After LASIK, accelerated corneal collagen cross-linking (ACXL) was used for myopia treatment. During 6-month follow-up, the results of LASIK-ACXL treatment were studied and compared to the LASIK-only procedure. The results showed that no statistically significant differences in UDVA, CDVA, MRSE, K mean, pachymetry, or ECD were found between the two groups at the visit after 6 months of follow-up (all P > 0...
2016: BioMed Research International
Jie-Sen Li, Wei-Liang Wang, Dao-Xin Yao
In our previous study, we have predicted the novel two-dimensional honeycomb monolayers of pnictogen. In particular, the structure and properties of the honeycomb monolayer of nitrogen, which we call nitrogene, are very unusual. In this paper, we make an in-depth investigation of its electronic structure. We find that the band structure of nitrogene can be engineered in several ways: controlling the stacking of monolayers, application of biaxial tensile strain, and application of perpendicular electric field...
September 29, 2016: Scientific Reports
King-Chin Yim, Vonika Ka-Man Au, Ling-Ling Hung, Keith Man-Chung Wong, Vivian Wing-Wah Yam
A series of luminescent bis-cyclometalated gold(III) complexes containing bridging alkynyl ligands of different natures has been synthesised and characterised. The photophysical properties of the complexes have been investigated through electronic absorption spectroscopy and emission studies. The vibronic emission bands are found to originate from the triplet intraligand (IL) π-π* excited states of the bis-cyclometalating ligands with some mixing of (3) IL π-π* character of the alkynyl ligands. The electrochemical study of a nonsymmetric dinuclear complex shows two successive reduction processes originating from the reductions of the two different cyclometalating ligands...
September 28, 2016: Chemistry: a European Journal
Sun Woo Kim, Zheng Deng, Zachary Fischer, Saul H Lapidus, Peter W Stephens, Man-Rong Li, Martha Greenblatt
New layered honeycomb tellurates, BiM(III)TeO6 (M = Cr, Mn, Fe) were synthesized and characterized. BiM(III)TeO6 (M = Cr, Fe) species crystallize in a trigonal space group, P3̅1c (No. 163), of edge-sharing M(3+)/Te(6+)O6 octahedra, which form honeycomb-like double layers in the ab plane with Bi(3+) cations located between the layers. Interestingly, the structure of BiMnTeO6 is similar to those of the Cr/Fe analogues, but with monoclinic space group, P21/c (No. 14), attributed to the strong Jahn-Teller distortion of Mn(3+) cations...
October 17, 2016: Inorganic Chemistry
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