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https://www.readbyqxmd.com/read/29352568/dual-energy-computed-tomography-should-be-a-first-line-preoperative-localization-imaging-test-for-primary-hyperparathyroidism-patients
#1
Jake Hiebert, Cameron Hague, Shangmei Hou, Sam M Wiseman
BACKGROUND: The objective of this study was to evaluate the performance of dual-energy computed tomography (DECT) for preoperative parathyroid tumor (PT) localization in primary hyperparathyroid (PHP) patients. METHODS: A retrospective review was carried out of the medical records of all PHP patients who underwent ultrasound (US), Tc-99m sestamibi noncontrast single photon emission computed tomography (CT-MIBI), DECT and parathyroidectomy at a single center. RESULTS: The sensitivities and accuracies for preoperative PT localization in the 97 patient study population were: US 40% and 93%, CT-MIBI 64...
January 5, 2018: American Journal of Surgery
https://www.readbyqxmd.com/read/29352274/compliance-free-digital-set-and-analog-reset-synaptic-characteristics-of-sub-tantalum-oxide-based-neuromorphic-device
#2
Yawar Abbas, Yu-Rim Jeon, Andrey Sergeevich Sokolov, Sohyeon Kim, Boncheol Ku, Changhwan Choi
A two terminal semiconducting device like a memristor is indispensable to emulate the function of synapse in the working memory. The analog switching characteristics of memristor play a vital role in the emulation of biological synapses. The application of consecutive voltage sweeps or pulses (action potentials) changes the conductivity of the memristor which is considered as the fundamental cause of the synaptic plasticity. In this study, a neuromorphic device using an in-situ growth of sub-tantalum oxide switching layer is fabricated, which exhibits the digital SET and analog RESET switching with an electroforming process without any compliance current (compliance free)...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352244/a-very-large-perpendicular-magnetic-anisotropy-in-pt-co-mgo-trilayers-fabricated-by-controlling-the-mgo-sputtering-power-and-its-thickness
#3
Hyung Keun Gweon, Seok Jin Yun, Sang Ho Lim
The perpendicular magnetic anisotropy (PMA) properties of Pt/Co/MgO trilayers are investigated as a function of the MgO sputtering power (PMgO) and its thickness (tMgO), both of which are important parameters affecting the degree of oxygen interpenetration into Co during sputtering. A strong PMA is achieved at small values of PMgO and tMgO, where the oxygen interpenetration into Co is expected to be small. The range of oxygen interpenetration is relatively extended in such a way that it affects both the Pt/Co and Co/MgO interfaces...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29352149/spin-hall-induced-auto-oscillations-in-ultrathin-yig-grown-on-pt
#4
M Evelt, C Safranski, Mohammed Aldosary, V E Demidov, I Barsukov, A P Nosov, A B Rinkevich, K Sobotkiewich, Xiaoqin Li, Jing Shi, I N Krivorotov, S O Demokritov
We experimentally study nanowire-shaped spin-Hall nano-oscillators based on nanometer-thick epitaxial films of Yttrium Iron Garnet grown on top of a layer of Pt. We show that, although these films are characterized by significantly larger magnetic damping in comparison with the films grown directly on Gadolinium Gallium Garnet, they allow one to achieve spin current-driven auto-oscillations at comparable current densities, which can be an indication of the better transparency of the interface to the spin current...
January 19, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29351949/pt-and-ot-helper-golf-elbow-a-mobile-app-user-guide-for-getting-a-grip-on-medial-epicondylalgia
#5
Caitlin George, Crystal O Kean, Robert Stanton, Luke J Heales
No abstract text is available yet for this article.
January 19, 2018: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29351801/high-expression-of-tmem40-is-associated-with-the-malignant-behavior-and-tumorigenesis-in-bladder-cancer
#6
Zhen-Fei Zhang, Han-Rong Zhang, Qing-Yan Zhang, Shu-Yu Lai, Yu-Zhen Feng, Yi Zhou, Si-Rong Zheng, Rong Shi, Jue-Yu Zhou
BACKGROUND: Bladder cancer (BCa) is one of the most common cancers in the urinary system among the world. Previous studies suggested that TMEM40 expression level was significantly associated with clinicopathological parameters including histological grade, clinical stage and pT status of bladder cancer. However, the molecular mechanism of TMEM40 in BCa remains poorly understood. METHODS: Real-time quantitative RT-PCR (qRT-PCR) and western blot (WB) were used to examine the expression levels of TMEM40 in BCa tissues, paired non-cancer tissues and cell lines...
January 19, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29351439/role-of-reactive-oxygen-species-and-sulfide-quinone-oxoreductase-in-hydrogen-sulfide-induced-contraction-of-rat-pulmonary-arteries
#7
Jesus Prieto-Lloret, Vladimir A Snetkov, Yasin Shaifta, Inmaculada Docio, Michelle J Connolly, Charles E Mackay, Greg A Knock, Jeremy Pt Ward, Philip I Aaronson
Application of H2S ('sulfide') elicits a complex contraction in rat pulmonary arteries (PA) comprising a small transient contraction (phase 1; Ph1) followed by relaxation and then a second, larger, and more sustained contraction (phase 2; Ph2). We investigated the mechanisms causing this response using isometric myography in rat second order PA, with Na2S as a sulfide donor. Both phases of contraction to 1000μM Na2S were attenuated by the pan-PKC inhibitor Gö6983 (3μM) and by 50μM ryanodine; the Ca2+ channel blocker nifedipine (1μM) was without effect...
December 28, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29351161/effects-of-contrast-strength-vs-plyometric-training-on-lower-limb-explosive-performance-ability-to-change-direction-and-neuromuscular-adaptation-in-soccer-players
#8
Mehrez Hammami, Nawel Gaamouri, Roy J Shephard, Mohamed Souhaiel Chelly
The aim was to compare the effects of two differing 8-week in-season strength training programs (contrast strength training [CST] vs. plyometric training [PT]) on selected performance tests (5 and 40m sprints, S 4 X 5 m change of direction test, squat (SJ) and countermovement (CMJ) jumps , leg peak power on a cycle ergometer force-velocity test, 1-repetition maximal (1-RM) half squat, and electromyographic [EMG] activity of the vastus lateralis, vastus medialis and rectus femoris muscles during vertical jump tests)...
January 17, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29350937/light-stops-at-exceptional-points
#9
Tamar Goldzak, Alexei A Mailybaev, Nimrod Moiseyev
Almost twenty years ago, light was slowed down to less than 10^{-7} of its vacuum speed in a cloud of ultracold atoms of sodium. Upon a sudden turn-off of the coupling laser, a slow light pulse can be imprinted on cold atoms such that it can be read out and converted into a photon again. In this process, the light is stopped by absorbing it and storing its shape within the atomic ensemble. Alternatively, the light can be stopped at the band edge in photonic-crystal waveguides, where the group speed vanishes...
January 5, 2018: Physical Review Letters
https://www.readbyqxmd.com/read/29350628/inkjet-printing-and-electrical-characterisation-of-dna-templated-cadmium-sulfide-nanowires
#10
Raushan Nurdillayeva, Atsinafe Oshido, Thomas Bamford, Osama El-Zubir, Andrew Houlton, John Hedley, Andrew Pike, Benjamin Horrocks
Cadmium sulfide can be templated on -DNA molecules to form an aqueous dispersion of CdS/-DNA nanowires. Subsequent addition of ethylene glycol to 50% v/v is sufficient to formulate an ink suitable for printing using piezoelectric drop-on-demand technology. Printed droplet arrays show a coffee-ring morphology of individual deposits by fluorescence and Raman microscopy, but upon increasing the number of layers of printed material by repeated printing over each droplet, the dry deposit approaches closer to a disc shape...
January 19, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29350619/growth-and-lattice-dynamics-of-ultrathin-bao-films-on-pt-001
#11
Veronica Goian, Florian O Schumann, Wolf Widdra
We report on the surface phonons of long-range ordered BaO thin films grown on Pt(001). In the thickness range between 4 and 28 ML, we find unstrained BaO(001)-(1x1) bulk-like terminated films which coincide with a Pt(001)-c(2x2) lattice periodicity. The dipole-active lattice vibrations were determined using high-resolution electron energy loss spectroscopy. For all BaO film thicknesses, a single Fuchs-Kliewer (FK) phonon-polariton is observed. Its intensity increases and its frequency softens with increasing film thickness...
January 19, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29349954/-influence-on-coagulation-function-and-the-therapy-effect-of-damage-control-orthopaedics-for-unstable-pelvic-fractures-and-multiple-fractures-of-extremities
#12
Yan-Chao Li, Yong Liu, Bo Huang
OBJECTIVE: To retrospectively explore the effects of damage control orthopaedics concept on coagulation and curative effects in unstable pelvic fractures and multiple fractures of limbs. METHODS: From March 2014 to December 2015, 40 patients with unstable pelvic fractures and limbs multiple fractures in treatment group included 22 males and 18 females with an average age of (39.00±4.12) years old were treated with the damage control orthopaedics concept, the ISS score was (25...
March 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29349918/dual-drug-backboned-shattering-polymeric-theranostic-nanomedicine-for-synergistic-eradication-of-patient-derived-lung-cancer
#13
Yuwei Cong, Haihua Xiao, Hejian Xiong, Zigui Wang, Jianxun Ding, Chan Li, Xuesi Chen, Xing-Jie Liang, Dongfang Zhou, Yubin Huang
Most of the current nanoparticle-based therapeutics worldwide failing in clinical trials face three major challenges: (i) lack of an optimum drug delivery platform with precise composition, (ii) lack of a method of directly monitoring the fate of a specific drug rather than using any other labelling molecules as a compromise, and (iii) lack of reliable cancer models with high fidelity for drug screen and evaluation. Here, starting from a PP2A inhibitor demethylcantharidin (DMC) and cisplatin, the design of a dual sensitive dual drug backboned shattering polymer (DDBSP) with exact composition at a fixed DMC/Pt ratio for precise nanomedicine is shown...
January 19, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29349907/accelerated-hydrogen-evolution-kinetics-on-nife-layered-double-hydroxide-electrocatalysts-by-tailoring-water-dissociation-active-sites
#14
Guangbo Chen, Tao Wang, Jian Zhang, Pan Liu, Hanjun Sun, Xiaodong Zhuang, Mingwei Chen, Xinliang Feng
Owing to its earth abundance, low kinetic overpotential, and superior stability, NiFe-layered double hydroxide (NiFe-LDH) has emerged as a promising electrocatalyst for catalyzing water splitting, especially oxygen evolution reaction (OER), in alkaline solutions. Unfortunately, as a result of extremely sluggish water dissociation kinetics (Volmer step), hydrogen evolution reaction (HER) activity of the NiFe-LDH is rather poor in alkaline environment. Here a novel strategy is demonstrated for substantially accelerating the hydrogen evolution kinetics of the NiFe-LDH by partially substituting Fe atoms with Ru...
January 19, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29349841/novel-mof-derived-co-n-c-bifunctional-catalysts-for-highly-efficient-zn-air-batteries-and-water-splitting
#15
Mingdao Zhang, Quanbin Dai, Hegen Zheng, Mindong Chen, Liming Dai
Metal-organic frameworks (MOFs) and MOF-derived materials have recently attracted considerable interest as alternatives to noble-metal electrocatalysts. Herein, the rational design and synthesis of a new class of Co@N-C materials (C-MOF-C2-T) from a pair of enantiotopic chiral 3D MOFs by pyrolysis at temperature T is reported. The newly developed C-MOF-C2-900 with a unique 3D hierarchical rodlike structure, consisting of homogeneously distributed cobalt nanoparticles encapsulated by partially graphitized N-doped carbon rings along the rod length, exhibits higher electrocatalytic activities for oxygen reduction and oxygen evolution reactions (ORR and OER) than that of commercial Pt/C and RuO2 , respectively...
January 19, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29349636/effects-of-asymmetric-local-joule-heating-on-silicon-nanowire-based-devices-formed-by-dielectrophoresis-alignment-across-pt-electrodes
#16
Hsiang-Hsi Ho, Chun-Lung Lin, Wei-Che Tsai, Liang-Zheng Hong, Cheng-Han Lyu, Hsun-Feng Hsu
We demonstrate the fabrication and characterization of silicon nanowire-based devices in metal-nanowire-metal configuration using direct current dielectrophoresis. The current-voltage characteristics of the devices were found rectifying, and their direction of rectification could be determined by voltage sweep direction due to the asymmetric Joule heating effect that occurred in the electrical measurement process. The photosensing properties of the rectifying devices were investigated. It reveals that when the rectifying device was in reverse-biased mode, the excellent photoresponse was achieved due to the strong built-in electric field at the junction interface...
January 16, 2018: Nanoscale Research Letters
https://www.readbyqxmd.com/read/29349448/a-study-on-platinum-iv-species-containing-an-estrogen-receptor-modulator-to-reverse-tamoxifen-resistance-of-breast-cancer
#17
Weiwei Hu, Jian Zhao, Wuyang Hua, Shaohua Gou
Several dual-action Tam-Pt(iv) complexes derived from tamoxifen (Tam) and platinum(ii) drugs were designed and synthesized for targeting estrogen receptors (ERs) and DNA. These novel compounds not only exhibited potent cytotoxicity against breast cancer cells, but also reversed the tamoxifen resistance of TamR-MCF-7 cancer cells. Computational docking assays together with cellular uptake data demonstrated that the ER ligand portion of these conjugates plays a targeting role in ER-positive tumor cells and promotes the uptake of platinum via an estrogen receptor-mediated pathway...
January 19, 2018: Metallomics: Integrated Biometal Science
https://www.readbyqxmd.com/read/29348903/the-systemic-inflammation-based-glasgow-prognostic-score-as-a-powerful-prognostic-factor-in-patients-with-upper-tract-urothelial-carcinoma
#18
Teruo Inamoto, Hideyasu Matsuyama, Shigeru Sakano, Naokazu Ibuki, Kiyoshi Takahara, Kazumasa Komura, Tomoaki Takai, Takuya Tsujino, Yuki Yoshikawa, Koichiro Minami, Kazuhiro Nagao, Ryo Inoue, Haruhito Azuma
Introduction and Objective: The combination of C-reactive protein and albumin, the Glasgow Prognostic Score (GPS), had independent prognostic value in patients with varying cancers, except for upper tract urothelial carcinoma (UTUC). The aim of this study was to describe the relationship between GPS and survival in patients with UTUC after adjustment for other prognostic factors. Materials and Methods: We queried 2 UTUC databases. Retrospective clinical series on patients with localized UTUC managed by nephroureterectomy with bladder cuff, for whom data from the Yamaguchi Uro-Oncology Group and Osaka Medical College registry, including age, presence of bladder cancer, pT stage, lymphovascular invasion, C-reactive protein (CRP) and albumin, were analyzed...
December 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29348832/clinical-and-histological-features-of-primary-testicular-diffuse-large-b-cell-lymphoma-a-single-center-experience-in-china
#19
De Zhou, Changqian Bao, Xiujin Ye, Lixia Zhu, Jingjing Zhu, Li Li, Mingyu Zhu, Xiudi Yang, Yanlong Zheng, Xianbo Huang, Mixue Xie, Wanzhuo Xie
Primary testicular lymphoma (PTL) is a rare and aggressive form of extranodal lymphoma. Approximately 80-98% of PTLs are diffuse large B-cell lymphoma (PT-DLBCL). The prognosis of DLBCL patients has improved with the addition of rituximab to systemic chemotherapy, but outcomes of PT-DLBCL remain poor. This may be explained by the high rate of relapse in the central nervous system (CNS) and contralateral testis. We analyzed 1,132 newly diagnosed DLBCL patients (37 with PT-DLBCL) who were treated at our hospital between January 2009 and December 2014...
December 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29347944/expression-of-ugp2-and-cfl1-expression-levels-in-benign-and-malignant-pancreatic-lesions-and-their-clinicopathological-significance
#20
Lingxiang Wang, Li Xiong, Zhengchun Wu, Xiongying Miao, Ziru Liu, Daiqiang Li, Qiong Zou, Zhulin Yang
BACKGROUND: This study investigated UGP2 (uridine diphosphate-glucose pyrophosphorylase-2) and CFL1 (cofilin-1) expression in pancreatic ductal carcinoma (PDC), paracancerous tissue (PT), benign lesions (BL), and normal tissue (NT) and their clinicopathological significance. METHODS: Surgical specimens, which were collected from 106 cases of pancreatic ductal carcinoma, 35 cases of paracancerous tissues, 55 cases of benign lesions and 13 cases of normal pancreatic tissues, were fixed with 4% formaldehyde to prepare conventional paraffin-embedded sections...
January 18, 2018: World Journal of Surgical Oncology
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