Read by QxMD icon Read


L J Cornelissen, J Liu, B J van Wees, R A Duine
Efficient manipulation of magnon spin transport is crucial for developing magnon-based spintronic devices. In this Letter, we provide proof of principle of a method for modulating the diffusive transport of thermal magnons in an yttrium iron garnet channel between injector and detector contacts. The magnon spin conductance of the channel is altered by increasing or decreasing the magnon chemical potential via spin Hall injection of magnons by a third modulator electrode. We obtain a modulation efficiency of 1...
March 2, 2018: Physical Review Letters
Aubrey L Galusha, Pamela C Kruger, Lyn J Howard, Patrick J Parsons
Patients receiving long-term parenteral nutrition (PN) are exposed to potentially toxic elements, which may accumulate in bone. Bone samples collected from seven PN patients (average = 14 years) and eighteen hip/knee samples were analyzed for Al as part of a previous investigation. Yttrium was serendipitously detected in the PN bone samples, leading to the present investigation of rare earth elements (REEs). A method for quantitating fifteen REEs in digested bone was developed based on tandem ICP-MS (ICP-MS/MS) to resolve spectral interferences...
May 2018: Journal of Trace Elements in Medicine and Biology
Samuel B Penwell, Lukas Whaley-Mayda, Andrei Tokmakoff
We present the design and characterization of a tunable mid-IR optical parametric amplifier (OPA) with a 1 MHz 1033 nm fiber laser pump source. The OPA generates >10  nJ/pulse tunable from 3-7.5 μm with 85-165  cm-1 bandwidth and 140-540 fs pulse durations. The design utilizes a single stage of collinear, Type I amplification in lithium gallium sulfide (LGS) seeded by the near-IR portion of a super-continuum (SC) generated in yttrium aluminum garnet (YAG). The resulting mid-IR idler beam is isolated as the output...
March 15, 2018: Optics Letters
Amo Dal Piva, Lpc Contreras, F C Ribeiro, L C Anami, Sea Camargo, Aoc Jorge, M A Bottino
INTRODUCTION: This study evaluated the morphology, biofilm formation, and viability of human gingival fibroblasts in contact with two monolithic ceramics after two different finishing techniques: polishing or glazing. For this, 92 blocks (4.5 × 4.5 × 1.5 mm) of each ceramic were made using high translucency zirconia partially stabilized by yttrium (YZHT) and lithium silicate reinforced by zirconium (ZLS). METHODS AND MATERIALS: Blocks were sintered and then divided into glazing (g) or polishing (p) surface finish...
March 13, 2018: Operative Dentistry
Haoliang Liu, Chuang Zhang, Hans Malissa, Matthew Groesbeck, Marzieh Kavand, Ryan McLaughlin, Shirin Jamali, Jingjun Hao, Dali Sun, Royce A Davidson, Leonard Wojcik, Joel S Miller, Christoph Boehme, Z Valy Vardeny
Magnonics concepts utilize spin-wave quanta (magnons) for information transmission, processing and storage. To convert information carried by magnons into an electric signal promises compatibility of magnonic devices with conventional electronic devices, that is, magnon spintronics1 . Magnons in inorganic materials have been studied widely with respect to their generation2,3 , transport4,5 and detection6 . In contrast, resonant spin waves in the room-temperature organic-based ferrimagnet vanadium tetracyanoethylene (V(TCNE)x (x ≈ 2)), were detected only recently7 ...
March 12, 2018: Nature Materials
Matthew J O'Hara, Nathaniel J Murray, Jennifer C Carter, Samuel S Morrison
Zirconium-89 (89 Zr), produced by the (p, n) reaction from naturally monoisotopic yttrium (nat Y), is a promising positron emitting isotope for immunoPET imaging. Its long half-life of 78.4 h is sufficient for evaluating slow physiological processes. A prototype automated fluidic system, coupled to on-line and in-line detectors, has been constructed to facilitate development of new89 Zr purification methodologies. The highly reproducible reagent delivery platform and near-real time monitoring of column effluents allows for efficient method optimization...
February 24, 2018: Journal of Chromatography. A
Vindya Abeysinghe, Siva Sundararajan, Luc Delriviere, Jonathan Tibballs
Unresectableintrahepaticcholangiocarcinoma has a very poor prognosis despite various treatment options. The case presented describes the diagnostic challenges of a young pregnant woman with unresectable cholangiocarcinoma. The current treatment options for cholangiocarcinoma have limited evidence and high recurrence rate. Given the young age of this patient, selective internal radiotherapy was trialled with traditional chemotherapy with a clinically significant result. This case highlights the delays when diagnosing cholangiocarcinoma in younger patients and the possibility of selective internal radiation therapy in combination with chemotherapy as a potential first-line treatment for a complete response in unresectable disease...
March 9, 2018: BMJ Case Reports
Yohei Matsuoka, Sylvain Mathonnèire, Sven Peters, W Ted Masselink
We describe a design concept for broadband anti-reflection coatings for the mid-infrared that allows thinner film thickness and characterize its properties in the mid-infrared range from 7 μm to 12 μm. Two demonstrator coatings comprising zinc sulfide, yttrium fluoride, and germanium, all of which are deposited by electron beam evaporation on indium phosphide substrates, are optimized for the 7-12 μm and the 10-12 μm ranges. They exhibit less than 1.0% reflection over the target wavelength ranges with notably thin coating thickness...
March 1, 2018: Applied Optics
Amanda M O Dal Piva, Ronaldo L A Carvalho, Aline L Lima, Marco A Bottino, Renata M Melo, Luiz Felipe Valandro
This study evaluated the influence of silica coating, primer type and its heat treatment on bond strength durability between resin cement and an yttrium-stabilized polycrystalline tetragonal zirconia (Y-TZP). Eighty (80) Y-TZP blocks were allocated into 16 groups considering four factors: silica coating (without and with); type of primer (RelyX Ceramic Primer, a silane-based primer; Single Bond Universal, a universal MDP-based primer); heat treatment of the primer (without and with); aging (without and with)...
March 8, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
Claudio I Perez, Sunee Chansangpetch, Yen C Hsia, Shan C Lin
Purpose: To report the first case of Neodymium Yttrium Aluminum Garnet ( Nd:YAG) laser use to recanalize a CyPass occluded with a clot in the early postoperative follow-up. Observations: A 66 year-old woman with primary open angle glaucoma and cataract received combined cataract surgery plus CyPass in the right eye. Surgery was uneventful, however, there was a small amount of hyphema related to bleeding around the site of Cypass insertion. Intraocular pressure (IOP) was between 6 and 7 mmHg in the first week on no glaucoma medications...
June 2018: American Journal of Ophthalmology Case Reports
Ijin Joo, Hyo-Cheol Kim, Gyoung Min Kim, Jin Chul Paeng
Radioembolization using beta-emitting yttrium-90 microspheres is being increasingly used for the treatment of primary and metastatic liver cancers. It is a form of intra-arterial brachytherapy which delivers intense radiation to liver tumors with little embolic effect; this mode of action results in unique post-treatment imaging findings. It is important to understand these imaging findings to avoid misinterpretation of tumor response and to determine further management of the disease. Herein, we discuss the current concepts for assessing tumor response, common post-treatment imaging features, and associated complications following radioembolization...
March 2018: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
S Vasanthavel, K Meenakshi, V Nivedha, A M Ballamurugan, S Kannan
The present investigation explores the influence of yttrium (Y3+ ) inclusions in ZrO2 -SiO2 binary system (YSZ) on its structural and mechanical features. The powders were synthesized through sol-gel technique and an exclusive characterization were undertaken to investigate the structural and mechanical features influenced by Y3+ additions. Characterization techniques affirmed the crucial role of Y3+ on the resultant structural and thermal stability of the YZS system. Instrumented indentation inferred the enhanced mechanical properties demonstrated by YZS system in comparison with pure ZrO2 -SiO2 binary system (ZS)...
March 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
Bruno Sangro, Carlo Ludovico Maini, Giuseppe Maria Ettorre, Roberto Cianni, Rita Golfieri, Daniele Gasparini, Samer Ezziddin, Philipp M Paprottka, Francesco Fiore, Mark Van Buskirk, Jose Ignacio Bilbao, Rita Salvatori, Emanuela Giampalma, Onelio Geatti, Kai Wilhelm, Ralf Thorsten Hoffmann, Francesco Izzo, Mercedes Iñarrairaegui, Carlo Urigo, Alberta Cappelli, Alessandro Vit, Hojjat Ahmadzadehfar, Tobias Franz Jakobs, Rosa Sciuto, Giuseppe Pizzi, Secondo Lastoria
PURPOSE: Radioembolisation is part of the multimodal treatment of hepatocellular carcinoma (HCC) at specialist liver centres. This study analysed the impact of prior treatment on tolerability and survival following radioembolisation. METHODS: This was a retrospective analysis of 325 consecutive patients with a confirmed diagnosis of HCC, who received radioembolisation with yttrium-90 resin microspheres at eight European centres between September 2003 and December 2009...
March 7, 2018: European Journal of Nuclear Medicine and Molecular Imaging
Hirotsugu Takashina, Akira Watanabe, Hiroshi Tsuneoka
Background and Objective: To evaluate full-thickness macular hole (MH) formation in the postoperative period after initial vitrectomy for rhegmatogenous retinal detachment (rRD). Materials and Methods: We retrospectively reviewed the medical records of 4 consecutive eyes that required additional vitrectomy for full-thickness MH between April 2013 and March 2016 after undergoing an initial vitrectomy for rRD. Results: Epiretinal membrane (ERM) was identified by preoperative optical coherence tomography or intraoperative dye staining in each case...
September 2017: Case Reports in Ophthalmology
Deborah Repullo, Marie Diaz, Stéphane Holbrechts, Maria Gomez-Galdón, Dirk Van Gestel, Ali Bohlok, Gabriel Liberale, Vincent Donckier
BACKGROUND: The development of a second primary tumor is a potential late side effect of radiotherapy. Particularly, an increased risk of secondary cancers, mostly of digestive or breast origin, has been observed in patients treated with high-dose radiotherapy for Wilms tumor (WT) in childhood. However, hepatocellular carcinoma (HCC) has been very rarely described as a potentially radiotherapy-induced tumor. We describe the case of a patient with an aggressive HCC 50 years after the treatment of a WT...
March 7, 2018: World Journal of Surgical Oncology
Niklas Lindahl, Björn Eriksson, Henrik Grönbeck, Rakel Wreland Lindström, Göran Lindbergh, Carina Lagergren, Björn Wickman
Fuel cells are foreseen to have an important role in sustainable energy systems, provided that catalysts with higher activity and stability are developed. In this work, we deposit highly active sputtered thin films of platinum alloyed with yttrium (Pt3Y) on commercial gas diffusion layers and measure their performance in a proton exchange membrane fuel cell. After acid pretreatment, the alloy is found to have up to 2.5 times higher specific activity than pure platinum. The performance of Pt3Y is much higher than pure Pt, even if all of the alloying element was leached out from parts of the thin metal film on the porous support...
March 7, 2018: ChemSusChem
Pierce K H Chow, Mihir Gandhi, Say-Beng Tan, Maung Win Khin, Ariunaa Khasbazar, Janus Ong, Su Pin Choo, Peng Chung Cheow, Chanisa Chotipanich, Kieron Lim, Laurentius A Lesmana, Tjakra W Manuaba, Boon Koon Yoong, Aloysius Raj, Chiong Soon Law, Ian H Y Cua, Rolley R Lobo, Catherine S C Teh, Yun Hwan Kim, Yun Won Jong, Ho-Seong Han, Si-Hyun Bae, Hyun-Ki Yoon, Rheun-Chuan Lee, Chien-Fu Hung, Cheng-Yuan Peng, Po-Chin Liang, Adam Bartlett, Kenneth Y Y Kok, Choon-Hua Thng, Albert Su-Chong Low, Anthony S W Goh, Kiang Hiong Tay, Richard H G Lo, Brian K P Goh, David C E Ng, Ganesh Lekurwale, Wei Ming Liew, Val Gebski, Kenneth S W Mak, Khee Chee Soo
Purpose Selective internal radiation therapy or radioembolization (RE) shows efficacy in unresectable hepatocellular carcinoma (HCC) limited to the liver. This study compared the safety and efficacy of RE and sorafenib in patients with locally advanced HCC. Patients and Methods SIRveNIB (selective internal radiation therapy v sorafenib), an open-label, investigator-initiated, phase III trial, compared yttrium-90 (90 Y) resin microspheres RE with sorafenib 800 mg/d in patients with locally advanced HCC in a two-tailed study designed for superiority/detriment...
March 2, 2018: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
Kerda Keevend, Guido Panzarasa, Fabian H L Starsich, Martin Zeltner, Anastasia Spyrogianni, Elena Tsolaki, Giuseppino Fortunato, Sotiris E Pratsinis, Sergio Bertazzo, Inge K Herrmann
Flame aerosol technology is a versatile method for scalable synthesis of nanoparticles. Since particles are produced and collected in a dry state, dispersibility and further functionalization could pose hurdles to their biomedical use. We report on a one-pot, scalable and robust procedure for the PEGylation of flame-made yttria and silica nanoparticles. We demonstrate improved colloidal stability, attenuated activation of blood coagulation and decreased uptake into phagocytic cells, all of which pave the way for facilitated biomedical use of flame-made oxide nanoparticles...
March 2, 2018: Chemical Communications: Chem Comm
Zhongzhi Jia, Weiping Wang
OBJECTIVE: To evaluate the value of yttrium-90 (90 Y) microspheres in the management of unresectable liver metastases secondary to neuroendocrine tumors (NETs). MATERIALS AND METHODS: PubMed, EMBASE, the Cochrane Database of Systematic Reviews, and the "gray" literature (Google Scholar) were searched for all studies related to90 Y therapy for unresectable liver metastases of NETs. RESULTS: A total of 11 studies and 7 abstracts involving 870 patients were included in the final analysis...
March 2018: European Journal of Radiology
Austin Jack Ryan, Lucy E Darago, Sree Ganesh Balasubramini, Guo P Chen, Joseph W Ziller, Filipp Furche, Jeffrey R Long, William J Evans
A new series of Ln2+ complexes has been synthesized that overturns two previous generalizations in rare-earth metal reduction chemistry: that amide ligands do not form isolable complexes of the highly-reducing non-traditional Ln2+ ions and that yttrium is a good model for the late lanthanides in these reductive reactions. Reduction of Ln(NR2)3 (R = SiMe3) complexes in THF under Ar with M = K or Rb in the presence of 2.2.2-cryptand (crypt) forms crystallographically-characterizable [M(crypt)][Ln(NR2)3] complexes not only for the traditional Tm2+ ion and the configurational crossover ions, Nd2+ and Dy2+, but also for the non-traditional Gd2+, Tb2+, Ho2+, and Er2+ ions...
February 28, 2018: Chemistry: a European Journal
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"