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https://www.readbyqxmd.com/read/28231380/perioperative-medications-for-preventing-temporarily-increased-intraocular-pressure-after-laser-trabeculoplasty
#1
REVIEW
Linda Zhang, Jennifer S Weizer, David C Musch
BACKGROUND: Glaucoma is the international leading cause of irreversible blindness. Intraocular pressure (IOP) is the only currently known modifiable risk factor; it can be reduced by medications, incisional surgery, or laser trabeculoplasty (LTP). LTP reduces IOP by 25% to 30% from baseline, but early acute IOP elevation after LTP is a common adverse effect. Most of these IOP elevations are transient, but temporarily elevated IOP may cause further optic nerve damage, worsening of glaucoma requiring additional therapy, and permanent vision loss...
February 23, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28230008/analysis-of-therapeutic-effectiveness-and-prognostic-factor-on-argon-helium-cryoablation-combined-with-transcatheter-arterial-chemoembolization-for-the-treatment-of-advanced-hepatocellular-carcinoma
#2
Chen Huang, Weizhao Zhuang, Huigang Feng, Huizhuang Guo, Yukuan Tang, Hanwei Chen, Yi Huang
OBJECTIVE: The objective of this study was to evaluate the effectiveness on argon-helium cryoablation combined with transcatheter arterial chemoembolization (TACE) in treating advanced hepatocellular carcinoma (HCC) and its influence factor. MATERIALS AND METHODS: This trial was approved by the Guangzhou Panyu Central Hospital Ethics Committee. This was a prospective, single-center study conducted in Guangzhou Panyu Central Hospital. After informed consent was obtained, the prospective randomized clinical data of 120 patients with advanced HCC were collected...
December 2016: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28227441/novel-ti-nb-alloys-with-improved-wear-resistance-for-biomedical-implant-application
#3
Praveen Chapala, Swati Ghosh Acharyya, S M Shariff, Ganesh Naik, Praveen Chapala, Swati Ghosh Acharyya, S M Shariff, Ganesh Naik, Ganesh Naik, S M Shariff, Praveen Chapala, Swati Ghosh Acharyya
The present study involved fabrication of titanium niobium based alloys having elastic modulus close to that of human bone and subsequently determining the wear resistance of these alloys for biomedical application. In the present study three beta stabilized titanium niobium alloys having composition Ti-24Nb-4Zr-8Sn, Ti-35Nb-4Sn and Ti-29Nb-13Ta-7Zr were made by vacuum arc melting. The alloys were then aged at 1000 C for 6 hours in an argon atmosphere. Detailed microstructural characterization and phase identification was carried out using scanning electron microscopy and x-ray diffraction respectively...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28221803/effects-of-thickness-on-the-metal-insulator-transition-in-free-standing-vanadium-dioxide-nanocrystals
#4
Mustafa M Fadlelmula, Engin C Sürmeli, Mehdi Ramezani, T Serkan Kasırga
Controlling solid state phase transitions via external stimuli offers rich physics along with possibilities of unparalleled applications in electronics and optics. The well-known metal-insulator transition (MIT) in vanadium dioxide (VO2) is one instance of such phase transitions emerging from strong electronic correlations. Inducing the MIT using electric field has been investigated extensively for the applications in electrical and ultrafast optical switching. However, as the Thomas-Fermi screening length is very short, for considerable alteration in the material's properties with electric field induced MIT, crystals below 10 nm are needed...
February 23, 2017: Nano Letters
https://www.readbyqxmd.com/read/28217887/gastric-antral-vascular-ectasia-in-systemic-sclerosis-where-do-we-stand
#5
REVIEW
Hala El-Gendy, Kyrillus S Shohdy, Gehad G Maghraby, Kerolos Abadeer, Moustafa Mahmoud
Gastric antral vascular ectasia (GAVE) continues to be a challenge in both diagnosis and treatment. GAVE has a diverse group of associations and presumed causes, including cirrhosis, chronic renal failure and autoimmune connective tissue diseases. However, in most occasions, the management plan of GAVE itself is the same whatever the underlying disease by using Argon plasma coagulation (APC). Herein, we will discuss three cases of systemic sclerosis-associated GAVE presenting with either acute or chronic gastrointestinal bleeding showing variable responses to APC...
February 20, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28210896/maximum-availability-and-mineralogical-control-of-chromium-released-from-aod-slag
#6
Junguo Li, Bao Liu, Yanan Zeng, Ziming Wang, Zhiyuan Gao
AOD (argon oxygen decarburization) slag is the by-product in the stainless steel refining process. Chromium existing in AOD slag can leach out and probably poses a serious threat to the environment. To assess the leaching toxicity of chromium released from AOD slag, the temperature-dependent maximum availability leaching test was performed. To determine the controlling mineralogical phases of chromium released from AOD slag, a Visual MINTEQ simulation was established based on Vminteq30 and the FactSage 7.0 database...
March 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28210706/single-balloon-enteroscopy-efficacy-and-degree-of-concordance-with-noninvasive-evaluation-of-small-bowel
#7
Margarida Marques, João Antunes, Rosa Coelho, Hélder Cardoso, Filipe Vilas Boas, Armando Ribeiro, Guilherme Macedo
Background and study aims Clinical impact of single-balloon enteroscopy (SBE) is fairly known, as well as its diagnostic yield comparing with other small bowel gastrointestinal investigations. This study represents a contribution to better understand it and is designed to evaluate SBE efficacy and degree of concordance with previous evaluation of small bowel. Patients and methods This is a single-center retrospective study of patients that underwent SBE with suspected small bowel disease based on non-invasive imaging...
February 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/28208958/radiological-and-histopathological-outcome-of-giant-cell-tumor-of-femur-with-denosumab-treatment-a-case-report
#8
Preethi Dileep Menon, R Krishnakumar, Annie Jojo
Giant Cell Tumour of Bone (GCTB) is a benign but locally aggressive osteolytic skeletal neoplasm of young adults consisting of giant cells expressing RANK (Receptor Activator of Nuclear Factor-κB) and mesenchymal spindle-like stromal cells expressing RANKL (RANK ligand). The interaction of these cells leads to bone resorption. Recently, the RANKL inhibitor, denosumab, has demonstrated activity against giant-cell tumours. The current article reports a case of a Giant cell tumour of left distal femur with pathological fracture...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28207907/argon-does-not-affect-cerebral-circulation-or-metabolism-in-male-humans
#9
Frank Grüne, Stephan Kazmaier, Sanne Elisabeth Hoeks, Robert Jan Stolker, Marc Coburn, Andreas Weyland
OBJECTIVE: Accumulating data have recently underlined argon´s neuroprotective potential. However, to the best of our knowledge, no data are available on the cerebrovascular effects of argon (Ar) in humans. We hypothesized that argon inhalation does not affect mean blood flow velocity of the middle cerebral artery (Vmca), cerebral flow index (FI), zero flow pressure (ZFP), effective cerebral perfusion pressure (CPPe), resistance area product (RAP) and the arterio-jugular venous content differences of oxygen (AJVDO2), glucose (AJVDG), and lactate (AJVDL) in anesthetized patients...
2017: PloS One
https://www.readbyqxmd.com/read/28205433/a-battery-operated-atomic-emission-analyzer-for-waterborne-arsenic-based-on-atmospheric-pressure-glow-discharge-excitation-source
#10
Chun Yang, Dong He, Zhenli Zhu, Huan Peng, Zhifu Liu, Guojun Wen, Jianghao Bai, Hongtao Zheng, Shenghong Hu, Yanxin Wang
In this paper, a sensitive atomic emission spectrometer (AES) based on a new low power and low argon consumption (< 8 W, 100 mL min(-1)) miniature direct current (DC) atmospheric pressure glow discharge (APGD) plasma (3 mm×5 mm) excitation source was developed for the determination of arsenic in water samples. In this method, arsenic in water was reduced to AsH3 by hydride generation (HG), which was then transported to the APGD source for excitation and detected by a compact CCD (charge-coupled device) microspectrometer...
February 16, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28197412/bronchoscopic-diagnosis-and-treatment-of-primary-tracheobronchial-amyloidosis-a-retrospective-analysis-from-china
#11
Xiaoxiao Lu, Bixiu He, Ge Wang, Baimei He, Lijing Wang, Qiong Chen
Objective. To assess the value of bronchoscopy in the diagnosis and treatment of primary tracheobronchial amyloidosis (TBA), in order to reduce misdiagnosis rates and improve prognosis. Methods. Clinical data of 107 patients with TBA reported from 1981 to 2015 in China were retrospectively analyzed for clinical features, bronchoscopic manifestations, pathologies, treatments, and outcomes. Results. 105 of 107 TBA patients were pathologically confirmed by bronchoscopy. Main bronchoscopic manifestations of TBA were single or multiple nodules and masses within tracheobronchial lumens; local or diffuse luminal stenosis and obstruction; luminal wall thickening and rigidity; rough or uneven inner luminal walls; congestion and edema of mucosa, which was friable and prone to bleeding upon touch; and so forth...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28195875/endoscopic-variceal-ligation-combined-with-argon-plasma-coagulation-versus-ligation-alone-for-the-secondary-prophylaxis-of-variceal-bleeding-a-systematic-review-and-meta-analysis
#12
Xiaoyan Li, Tingting Jiang, Jian Gao
Endoscopic variceal ligation (EVL) is often recommended as an effective method for the treatment of esophageal varices, despite the important tendency of variceal recurrence. Recent studies indicate that combining EVL with argon plasma coagulation (APC) may be a more effective therapy than ligation alone. To investigate these findings, we carried out a systematic review and meta-analysis to compare the safety and efficacy of EVL combined with APC versus ligation alone for the secondary prophylaxis of esophageal variceal hemorrhage...
February 13, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28195738/thorium-and-uranium-hydride-phosphorus-and-arsenic-bearing-molecules-with-single-and-double-actinide-pnictogen-and-bridged-agostic-hydrogen-bonds
#13
Lester Andrews, Han-Gook Cho, K Sahan Thanthiriwatte, David A Dixon
Thorium atoms from laser ablation react with phosphine during condensation in excess argon to produce two new infrared absorptions at 1467.2 and 1436.6 cm(-1) near weak bands for ThH and ThH2, which increase on annealing to 25 and 30 K, indicating spontaneous reactions. Analogous experiments with uranium produced two similar bands at 1473.4 and 1456.7 cm(-1) above UH at 1423.8 cm(-1) and another absorption at 1388.2 cm(-1). Electronic structure calculations at the coupled cluster CCSD(T) for Th and density functional theory calculations for U as well as their proximity to other actinide hydride absorptions support assignments of these bands to the simplest molecules HP═ThH2, HP═UH2, and PH2-UH...
February 14, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28181222/systematic-review-of-laser-therapy-in-xanthelasma-palpebrarum
#14
REVIEW
Austin H Nguyen, Adam M Vaudreuil, Christopher J Huerter
Xanthelasma palpebrarum is a benign periorbital xanthoma with substantial cosmetic and psychosocial burden for patients. Treatment modalities should be considered based on efficacy as well as cosmetic outcome. Laser modalities in the treatment of xanthelasma palpebrarum have not been comprehensively reviewed and discussed. Accordingly, this study seeks to systematically and critically review the available literature discussing laser treatment of xanthelasma palpebrarum. PubMed was systematically reviewed for reports on laser therapy in the treatment of xanthelasma palpebrarum...
March 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/28178789/corresponding-states-behavior-of-spc-e-based-modified-bent-and-hybrid-water-models
#15
Volker C Weiss
The remarkable and sometimes anomalous properties of water can be traced back at the molecular level to the tetrahedral coordination of molecules due to the ability of a water molecule to form four hydrogen bonds to its neighbors; this feature allows for the formation of a network that greatly influences the thermodynamic behavior. Computer simulations are becoming increasingly important for our understanding of water. Molecular models of water, such as SPC/E, are needed for this purpose, and they have proved to capture many important features of real water...
February 7, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28178788/effects-of-salt-or-cosolvent-addition-on-solubility-of-a-hydrophobic-solute-in-water-relevance-to-those-on-thermal-stability-of-a-protein
#16
Shota Murakami, Tomohiko Hayashi, Masahiro Kinoshita
The solubility of a nonpolar solute in water is changed upon addition of a salt or cosolvent. Hereafter, "solvent" is formed by water molecules for pure water, by water molecules, cations, and anions for water-salt solution, and by water and cosolvent molecules for water-cosolvent solution. Decrease and increase in the solubility, respectively, are ascribed to enhancement and reduction of the hydrophobic effect. Plenty of experimental data are available for the change in solubility of argon or methane arising from the addition...
February 7, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28176992/measuring-the-surface-diffusivity-of-argon-in-nanoporous-carbon
#17
Xi Mi, Yunfeng Shi
Gas diffusion in porous media consists of surface hopping and non-surface ballistic/bulk diffusion. Unfortunately, only the overall diffusivity is usually measured, without being separated into various diffusion modes. Here, we report a numerical method to differentiate contributions from surface diffusion and non-surface diffusion for argon diffusion in nanoporous carbon using molecular dynamics simulations. The key is to truncate the argon trajectories based on the adsorption/desorption state, and thus attribute mass fluxes according to specific mechanisms during diffusion...
February 8, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28167819/growth-inducing-effects-of-argon-plasma-on-soybean-sprouts-via-the-regulation-of-demethylation-levels-of-energy-metabolism-related-genes
#18
Jiao Jiao Zhang, Jin Oh Jo, Do Luong Huynh, Raj Kumar Mongre, Mrinmoy Ghosh, Amit Kumar Singh, Sang Baek Lee, Young Sun Mok, Park Hyuk, Dong Kee Jeong
This study was conducted to determine the effects of argon plasma on the growth of soybean [Glycine max (L.) Merr.] sprouts and investigate the regulation mechanism of energy metabolism. The germination and growth characteristics were modified by argon plasma at different potentials and exposure durations. Upon investigation, plasma treatment at 22.1 kV for 12 s maximized the germination and seedling growth of soybean, increasing the concentrations of soluble protein, antioxidant enzymes, and adenosine triphosphate (ATP) as well as up-regulating ATP a1, ATP a2, ATP b1, ATP b2, ATP b3, target of rapamycin (TOR), growth-regulating factor (GRF) 1-6, down-regulating ATP MI25 mRNA expression, and increasing the demethylation levels of the sequenced region of ATP a1, ATP b1, TOR, GRF 5, and GRF 6 of 6-day-old soybean sprouts...
February 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28165248/molecular-modeling-and-adsorption-properties-of-ordered-silica-templated-cmk-mesoporous-carbons
#19
Surendra Kumar Jain, Roland J-M Pellenq, Keith E Gubbins, Xuan Peng
Realistic molecular models of silica-templated CMK-1, CMK-3, and CMK-5 carbon materials have been developed by using carbon rods and carbon pipes that were obtained by adsorbing carbon in a model MCM-41 pore. The interactions between the carbon atoms with the silica matrix were described using the PN-Traz potential, and the interaction between the carbon atoms was calculated by the reactive empirical bond order (REBO) potential. Carbon rods and pipes with different thicknesses were obtained by changing the silica-carbon interaction strength, the temperature, and the chemical potential of carbon vapor adsorption...
February 20, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28165021/black-tio2-nanobelts-g-c3n4-nanosheets-laminated-heterojunctions-with-efficient-visible-light-driven-photocatalytic-performance
#20
Liyan Shen, Zipeng Xing, Jinlong Zou, Zhenzi Li, Xiaoyan Wu, Yuchi Zhang, Qi Zhu, Shilin Yang, Wei Zhou
Black TiO2 nanobelts/g-C3N4 nanosheets laminated heterojunctions (b-TiO2/g-C3N4) as visible-light-driven photocatalysts are fabricated through a simple hydrothermal-calcination process and an in-situ solid-state chemical reduction approach, followed by the mild thermal treatment (350 °C) in argon atmosphere. The prepared samples are evidently investigated by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, N2 adsorption, and UV-visible diffuse reflectance spectroscopy, respectively...
February 6, 2017: Scientific Reports
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