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https://www.readbyqxmd.com/read/28342403/fitting-mas-nmr-spectra-in-crystals-with-local-disorder-czjzek-s-vs-maurer-s-model-for-11-b-and-71-ga-in-polycrystalline-gallium-borate
#1
K Seleznyova, N A Sergeev, M Olszewski, P Stępień, S V Yagupov, M B Strugatsky, J Kliava
A comparative analysis of the Czjzek's and Maurer's models of the joint distribution density of NMR quadrupole parameters has been carried out in view of their application to account for spectra broadening induced by local disorder in crystals. As an example of such an application, we have considered Magic Angle Spinning NMR of (11)B and (71)Ga isotopes in polycrystalline gallium borate. Computer simulations carried out using both models unambiguously show that in the case of low local disorder the Maurer's model, in contrast to the Czjzek's model, provides satisfactory fits to experimental NMR spectra...
March 18, 2017: Solid State Nuclear Magnetic Resonance
https://www.readbyqxmd.com/read/28337563/role-of-low-level-laser-therapy-added-to-facial-expression-exercises-in-patients-with-idiopathic-facial-bell-s-palsy
#2
Banu Ordahan, Ali Yavuz Karahan
The aim of the present study was to investigate the efficacy of low-level laser therapy in conjunction with conventional facial exercise treatment on functional outcomes during the early recovery period in patients with facial paralysis. Forty-six patients (mean age 41 ± 9.7 years; 40 women and 6 men) were randomized into two groups. Patients in the first group received low-level laser treatment as well as facial exercise treatment, while patients in the second group participated in facial exercise intervention alone...
March 23, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28335255/a-gallium-oxide-graphene-oxide-hybrid-composite-for-enhanced-photocatalytic-reaction
#3
Seungdu Kim, Kook In Han, In Gyu Lee, Won Kyu Park, Yeojoon Yoon, Chan Sei Yoo, Woo Seok Yang, Wan Sik Hwang
Hybrid composites (HCs) made up of gallium oxide (GaO) and graphene oxide (GO) were investigated with the intent of enhancing a photocatalytic reaction under ultraviolet (UV) radiation. The material properties of both GaO and GO were preserved, even after the formation of the HCs. The incorporation of the GO into the GaO significantly enhanced the photocatalytic reaction, as indicated by the amount of methylene blue (MB) degradation. The improvements in the reaction were discussed in terms of increased surface area and the retarded recombination of generated charged carriers...
July 1, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28332878/three-diagnoses-on-one-gallium-68-dotatate-scan
#4
Run Yu, Andrew Quon, J Randolph Hecht
No abstract text is available yet for this article.
March 23, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/28328207/same-precursor-two-different-products-comparing-the-structural-evolution-of-in-ga-o-gel-derived-powders-and-so-lution-cast-films-using-pair-distribution-function-analysis
#5
Suzannah R Wood, Keenan N Woods, Paul N Plassmeyer, David A Marsh, Darren W Johnson, Catherine J Page, Kirsten M O Jensen, David C Johnson
Amorphous metal oxides are central to a variety of technological applications. In particular, indium gallium oxide has garnered attention as a thin-film transistor channel layer material. In this work we examine the structural evolution of indium gallium oxide gel-derived powders and thin films using X-ray diffraction, infrared vibrational spectroscopy, and pair distribution function analysis of X-ray total scattering from standard (PDF) and normal incidence thin film (tfPDF) geometries. We find that the gel-derived powders and films from the same aqueous precursor evolve differently with temperature, forming mixtures of Ga-substituted In2O3 and In-substituted β-Ga2O3 with different degrees of substitution...
March 22, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28328161/synthesis-in-vitro-evaluation-and-68-ga-radiolabeling-of-cdp1-towards-pet-ct-imaging-of-bacterial-infection
#6
Jyotibon Dutta, Sooraj Baijnath, Anou M Somboro, Savania Nagiah, Fernando Albericio, Beatriz G de la Torre, Biljana Marjanovic-Painter, Jan Rijn Zeevaart, Mike Sathekge, Hendrik G Kruger, Anil Chuturgoon, Tricia Naicker, Thomas Ebenhan, Thavendran Govender
Bacterial infections are a major concern in the human health sector due to poor diagnosis and development of multi drug resistant strains. PET/CT provides a means for the noninvasive detection and localization of the infectious foci; however, the radiotracers available are either cumbersome to prepare or their exact contribution towards the imaging is not yet established. Human antimicrobial peptides are of interest for development as PET radiotracers as they are an integral component of the immune system, non-immunogenic towards the recipient and show selectivity towards pathogens such as bacteria...
March 22, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28321059/arterial-carboxyhemoglobin-measurement-is-useful-for-evaluating-pulmonary-inflammation-in-subjects-with-interstitial-lung-disease
#7
Yu Hara, Masaharu Shinkai, Soichiro Kanoh, Yuji Fujikura, Bruce K Rubin, Akihiko Kawana, Takeshi Kaneko
Objective The arterial concentration of carboxyhemoglobin (CO-Hb) in subjects with inflammatory pulmonary disease is higher than that in healthy individuals. We retrospectively analyzed the relationship between the CO-Hb concentration and established markers of disease severity in subjects with interstitial lung disease (ILD). Methods The CO-Hb concentration was measured in subjects with newly diagnosed or untreated ILD and the relationships between the CO-Hb concentration and the serum biomarker levels, lung function, high-resolution CT (HRCT) findings, and the uptake in gallium-67 ((67)Ga) scintigraphy were evaluated...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28317968/ag-induced-photoluminescence-enhancement-in-lanthanide-post-functionalized-mofs-and-ag-sensing
#8
Nana Sun, Bing Yan
The robust gallium carboxylate Ga(OH)(btec)·0.5H2O (MIL-61) is selected as a parent MOF to prepare Ln-MIL-61 by PSM. This work investigates the luminescence of Ln-doped MIL-61 (Ln = Eu(3+), Tb(3+), Sm(3+), Dy(3+)) in the visible light region. Upon 314 nm excitation, the emission spectra of Eu-MIL-61, Tb-MIL-61 and Eu/Tb-MIL-61 all exhibit their respective strong sharp emission bands. However, Sm-MIL-61 and Dy-MIL-61 show very similar emission to MIL-61 and almost no luminescence of Sm(3+) and Dy(3+). In this work, the weak fluorescence of Sm(3+) or Dy(3+) doped MIL-61 is effectively sensitized by Ag(+)...
March 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28317154/development-of-a-novel-fibrin-specific-pet-tracer
#9
Tiemen van Mourik, Michael Claesener, Klaas Nicolay, Holger Gruell
Fibrin deposition is observed in several diseases such as atherosclerosis, deep vein thrombosis and also tumors, where it contributes to the formation of mature tumor stroma. The aim of this study was to develop a gallium-labeled peptide tracer based on the fibrin targeting peptide Epep for PET imaging of fibrin deposition. For this purpose, the peptide Epep was modified with a NOTA moiety for radiolabeling with (67) Ga and (68) Ga and compared with the earlier validated (111) In-DOTA-Epep tracer. In vitro binding assays of (67) Ga-NOTA-Epep displayed an enhanced retention as compared to previously published data showing binding of (111) In-DOTA-Epep to human (84...
March 20, 2017: Journal of Labelled Compounds & Radiopharmaceuticals
https://www.readbyqxmd.com/read/28316937/metastasectomy-of-abdominal-wall-lesions-due-to-prostate-cancer-detected-through-pet-ct-gallium-68-pmsa-first-case-report
#10
Claudia Ochoa, Angie Ramirez, Rodolfo Varela, Fabian Godoy, Rafael Vargas, Jorge Forero, Andres Rojas, Carmen Roa, Carlos Céspedes, Jose Ramos, Marino Cabrera, Andres Calderon
Introducing the topic of abdominal wall metastasis secondary to prostate cancer with a reminder of the disease's rarity, being the first published case. This article is about a 66 year old patient diagnosed with prostate cancer [cT2aNxMx iPSA: 5,6 ng/ml Gleason 3+3, (Grade 1 Group)], treated with radical prostatectomy as well as accompanied with amplified pelvic lymphadenectomy, who subsequently presented metastatic lesions to the abdominal wall diagnosed with PET/CT Gallium 68-PMSA technique and treated with abdominal metastasectomy with adequate short term results...
May 2017: Urology Case Reports
https://www.readbyqxmd.com/read/28316831/crystal-structure-of-li3ga-bo3-2
#11
Robert W Smith, Darien Holman, Eric M Villa
The crystal structure of trilithium gallium bis-(orthoborate), Li3Ga(BO3)2, is isotypic with Li3Al(BO3)2 in a triclinic cell in space-group type P-1. The three Li and the unique Ga atom are coordinated by four O atoms each in tetra-hedra, and the two B atoms are coordinated by three O atoms in orthoborate triangles. Chains with composition [Ga2(BO3)4](6-) extend along the a axis. The Li atoms inter-leave these chains in tetra-hedral inter-stices. A comparison is made between the structure model of the title compound and that of a previously reported model for a compound with the same composition [Abdullaev & Mamedov (1972 ▸)...
March 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/28314941/neuropeptide-expression-and-morphometric-differences-in-crushed-alveolar-inferior-nerve-of-rats-effects-of-photobiomodulation
#12
Daniel Oliveira Martins, Fabio Martinez Dos Santos, Adriano Polican Ciena, Ii-Sei Watanabe, Luiz Roberto G de Britto, José Benedito Dias Lemos, Marucia Chacur
Inferior alveolar nerve (IAN) injuries may occur during various dental routine procedures, especially in the removal of impacted lower third molars, and nerve recovery in these cases is a great challenge in dentistry. Here, the IAN crush injury model was used to assess the efficacy of photobiomodulation (PBM) in the recovery of the IAN in rats following crushing injury (a partial lesion). Rats were divided into four experimental groups: without any procedure, IAN crush injury, and IAN crush injury with PBM and sham group with PBM...
March 17, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28299924/improvement-of-electrical-characteristics-and-stability-of-amorphous-indium-gallium-zinc-oxide-thin-film-transistors-using-nitrocellulose-passivation-layer
#13
Kwan Yup Shin, Young Jun Tak, Won-Gi Kim, Seonghwan Hong, Hyun Jae Kim
In this research, nitrocellulose is proposed as a new material for the passivation layers of amorphous indium gallium zinc oxide thin film transistors (a-IGZO TFTs). The a-IGZO TFTs with nitrocellulose passivation layers (NC-PVLs) demonstrate improved electrical characteristics and stability. The a-IGZO TFTs with NC-PVLs exhibit improvements in field-effect mobility (μFE) from 11.72 ± 1.14 to 20.68 ± 1.94 cm2/Vs, threshold voltage (Vth) from 1.85 ± 1.19 to 0.56 ± 0.35 V, and on/off current ratio (Ion/off) from (5...
March 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28298816/effect-of-gallium-arsenic-laser-on-photosensitized-periodontopathic-anaerobic-organisms-an-in-vitro-study
#14
Setu Mathur, Shaila Veerappa Kothiwale, Buddhi Prakash Nag, Tanu Mathur, Ashoka Bhansali, Rohit Kumar Khatri
BACKGROUND: The mainstay of periodontal therapy is mechanical removal of subgingival plaque. There is considerable interest in supplementing it with the use of antibiotics and antiseptics. Many drawbacks are associated with these adjunctive pharmacological regimens such as development of resistance to antibiotics and disruption of microflora of the gastrointestinal tract. Hence, alternate means of killing subgingival bacteria are clearly desirable. One such method is the use of laser...
July 2016: Journal of Indian Society of Periodontology
https://www.readbyqxmd.com/read/28295111/orbitally-driven-low-thermal-conductivity-of-monolayer-gallium-nitride-gan-with-planar-honeycomb-structure-a-comparative-study
#15
Zhenzhen Qin, Guangzhao Qin, Xu Zuo, Zhihua Xiong, Ming Hu
Two-dimensional (2D) materials with graphene as a representative have been intensively studied for a long time. Recently, monolayer gallium nitride (ML GaN) with honeycomb structure was successfully fabricated in experiments, generating enormous research interest for its promising applications in nano- and opto-electronics. Considering all these applications are inevitably involved with thermal transport, systematic investigation of the phonon transport properties of 2D GaN is in demand. In this paper, by solving the Boltzmann transport equation (BTE) based on first-principles calculations, we performed a comprehensive study of the phonon transport properties of ML GaN, with detailed comparison to bulk GaN, 2D graphene, silicene and ML BN with similar honeycomb structure...
March 15, 2017: Nanoscale
https://www.readbyqxmd.com/read/28294694/the-effects-of-transcutaneous-and-intraoral-low-level-laser-therapy-after-extraction-of-lower-third-molars-a-randomized-single-blind-placebo-controlled-dual-center-study
#16
Sevil Altundag Kahraman, Sedat Cetiner, Robert A Strauss
OBJECTIVE AND BACKGROUND: The surgical removal of impacted third molars is one of the most common procedures performed by oral and maxillofacial surgeons. The purpose of this study is to determine whether either transcutaneous or intraoral low-level laser therapy (LLLT) reduces postoperative pain and assists in the healing of mandibular third molar extraction. MATERIALS AND METHODS: This randomized, placebo controlled, single-blind, split-mouth design study was conducted on 60 patients with full bony impacted similar position mandibular third molars bilaterally...
March 14, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28292696/influence-of-low-level-laser-therapy-on-the-healing-of-human-bone-maxillofacial-defects-a-systematic-review
#17
Carolina Dos Santos Santinoni, Hiskell Francine Fernandes Oliveira, Victor Eduardo de Souza Batista, Cleidiel Aparecido Araujo Lemos, Fellippo Ramos Verri
PURPOSE: This systematic review evaluates the effectiveness of low-level laser therapy (LLLT) to enhance maxillofacial area bone repair. METHODS: A comprehensive search of studies published up to February 2017 and listed in PubMed/MEDLINE, Scopus, and Cochrane Library databases was performed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. RESULTS: The 15 selected studies evaluated a total of 374 patients (mean age, 28...
March 7, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28291012/quantum-size-confinement-in-gallium-selenide-nanosheets-band-gap-tunability-versus-stability-limitation
#18
Daniel Andres-Penares, Ana Cros, Juan Martinez-Pastor, Juan Sanchez-Royo
Gallium Selenide is one of the most promising candidates to extend the window of band gap values provided by existing two-dimensional semiconductors deep into the visible potentially reaching the ultraviolet. However, the tunability of its band gap by means of quantum confinement effects is still unknown probably due to poor nanosheet stability. Here, we demonstrate that the optical band gap band of GaSe nanosheets can be tuned by 120 meV from bulk to 8 nm thick. The luminescent response of very thin nanosheets (< 8 nm) is strongly quenched due to early oxidation...
March 14, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28289894/the-effect-of-low-level-laser-therapy-on-tooth-movement-during-canine-distalization
#19
Sevin Erol Üretürk, Müyesser Saraç, Sönmez Fıratlı, Şule Batu Can, Yegane Güven, Erhan Fıratlı
The aim of the study is to determine the effects of low level laser therapy on tooth movement during canine distalization by evaluating IL-1β, TGF-β1 levels in gingival crevicular fluid. Maxillary first premolars of the 15 Angle Class II division I patients (12-19 years old) were extracted. Right maxillary canines were distalized by standard protocol as control group whereas the left maxillary canines distalized by laser application. A gallium-aluminum-arsenide diode laser with an output power of 20 mW was applied as five doses from the buccal and the palatal side on the day 0, and the 3rd, 7th, 14th, 21th 30th, 33st, 37th, 60th, 63th, and 67th days...
March 14, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28282208/subcycle-extreme-nonlinearities-in-gap-induced-by-an-ultrastrong-terahertz-field
#20
Carlo Vicario, Mostafa Shalaby, Christoph P Hauri
We report on the experimental observation of extreme laser spectral broadening and a change in optical transmission in gallium phosphite induced by 25  MV/cm terahertz (THz) single-cycle internal field. Such intense THz radiation leads to twofold transient modifications of the optical properties in the electro-optical crystal. First, the electric field provokes extensive cross-phase modulation via the χ^{(2)} and χ^{(3)} nonlinearities on a copropagating 50 fs near infrared laser pulse which turns into 500% spectral broadening...
February 24, 2017: Physical Review Letters
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