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https://www.readbyqxmd.com/read/29770407/-two-in-one-organic-inorganic-hybrid-mn-ii-complexes-exhibiting-dual-emissive-phosphorescence
#1
Alexey S Berezin, Denis G Samsonenko, Valery K Brel, Alexander V Artem'ev
Unprecedented organic-inorganic hybrid complexes, [Mn(L)3]MnHal4, containing both four- and hexacoordinated Mn2+ ions were synthesized by reacting MnCl2 or MnBr2 with bis(phosphine oxide) ligands (L) such as dppmO2, dppeO2, and 2,3-bis(diphenylphosphinyl)-1,3-butadiene (dppbO2). In the [Mn(L)3]2+ cation of the complexes, the Mn2+ ion features a [MnO6] octahedral coordination environment (Oh), and the [MnHal4]2- anion adopts a tetrahedral geometry (Td). These "two-in-one" complexes exhibit strong long-lived luminescence (τav = 12-15 ms at 300 K) having interesting thermochromic behavior attributed to the thermal equilibrium between two emission bands...
May 17, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29768856/flux-assisted-preparation-and-photoluminescence-of-emission-tunable-sr-eu-al%C3%A2-si%C3%A2-o-8-phosphors
#2
Wei-Ren Liu, Bingfu Lei
We synthesized a emission tunable Eu(II)-activated SrAl2Si2O8 phosphors Eu(II)-activated SrAl2Si2O8 phosphors. The emission color could be controlled from blue to greenish-blue emissions via changing Sr/Eu ratio. The SrAl2Si2O8 and EuAl2Si2O8 phases were found to form a complete solid solution with composition of (Sr1-xEux)Al2Si2O8 (0 ≤ x ≤ 1.0), as indicated by X-ray diffraction analysis. Our research results also reveal that the use of fluxing agents of H3BO3 or LiBO2 in the materials synthesis plays a crucial role in improving the photoluminescence (PL) properties of (Sr,Eu)Al2Si2O8 phosphor and the surface morphology...
January 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29764229/use-of-surgical-hemostatic-powder-for-ep-device-implantation-reduces-postoperative-rates-of-pocket-hematoma-and-infection
#3
Olga Reynbakh, Philippe Akhrass, Nektarios Souvaliotis, Chaithanya K Pamidimukala, Hasnun Nahar, Joseph Bastawrose, Pierre Boktor, Joshua E Aziz, Davendra Mehta, Emad F Aziz
BACKGROUND: Surgical site bleeding and infection are potential complications after EP device implantation procedures. To date, there is a wide variety of tools for management of intraoperative bleeding but it still remains unclear what methods are preferred. OBJECTIVE: The aim of our study is to compare the rate of complications in patients who underwent Cardiac Implantable Electronic devices (CIED) implantation utilizing Arista as a hemostatic agent to the rate of complications in those patients who underwent standard procedure protocol without Arista...
May 15, 2018: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/29759631/idiopathic-lead-migration-concept-and-variants-of-an-uncommon-cause-of-cardiac-implantable-electronic-device-dysfunction
#4
José L Morales, Santiago Nava, Manlio F Márquez, Jorge González, Jorge Gómez-Flores, Luis Colín, Marco A Martínez-Ríos, Pedro Iturralde
OBJECTIVES: This cumulative case study was performed to properly address the possible mechanisms, forms, and consequences of "twiddler's," "reel," and "ratchet" syndromes. BACKGROUND: Twiddler's, reel, and ratchet syndromes are rare entities responsible for lead displacement of cardiac implantable electronic devices (CIED). METHODS: From 2007 to 2012, 1,472 CIED were implanted at our center. Eighty-nine cases were reviewed for failure of pacing circuit integrity...
November 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759500/antibacterial-envelope-is-associated-with-low-infection-rates-after-implantable-cardioverter-defibrillator-and-cardiac-resynchronization-therapy-device-replacement-results-of-the-citadel-and-centurion-studies
#5
Charles A Henrikson, M Rizwan Sohail, Helbert Acosta, Eric E Johnson, Lawrence Rosenthal, Roman Pachulski, Dan Dan, Walter Paladino, Farhat S Khairallah, Kent Gleed, Ibrahim Hanna, Alan Cheng, Daniel R Lexcen, Grant R Simons
OBJECTIVES: This study sought to determine whether the nonabsorbable TYRX Antibacterial Envelope (TYRX) reduces major cardiovascular implantable electronic device (CIED) infections 12 months after implant. BACKGROUND: TYRX is a monofilament polypropylene mesh impregnated with minocycline and rifampin specifically designed to hold a CIED in place and elute antimicrobials over time. There are limited data on its ability to reduce CIED infections. METHODS: We prospectively enrolled patients who underwent generator replacement with an implantable cardioverter-defibrillator (ICD) or cardiac resynchronization therapy device (CRT), treated with TYRX...
October 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759437/cleaning-and-sterilization-of-used-cardiac-implantable-electronic-devices-with-process-validation-the-next-hurdle-in-device-recycling
#6
Thomas C Crawford, Craig Allmendinger, Jay Snell, Kevin Weatherwax, Balasundaram Lavan, Timir S Baman, Pat Sovitch, Daniel Alyesh, Thomas Carrigan, Noah Klugman, Denis Kune, Andrew Hughey, Daniel Lautenbach, Nathan Sovitch, Karman Tandon, George Samson, Charles Newman, Sheldon Davis, Archie Brown, Brad Wasserman, Ed Goldman, Sandra L Arlinghaus, Hakan Oral, Kim A Eagle
OBJECTIVES: This study sought to develop a validated, reproducible sterilization protocol, which could be used in the reprocessing of cardiac implantable electronic devices (CIEDs). BACKGROUND: Access to cardiac CIED therapy in high-income and in low- and middle-income countries varies greatly. CIED reuse may reduce this disparity. METHODS: A cleaning and sterilization protocol was developed that includes washing CIEDs in an enzymatic detergent, screw cap and set screw replacement, brushing, inspection, and sterilization in ethylene oxide...
June 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29758585/comparative-study-about-the-tensile-strength-and-yielding-mechanism-of-pacing-lead-among-major-manufacturers
#7
Chan Chi-Wo, Chan Lip-Kiong, Lam Tongny, Tsang Kin-Keung, Chan Kin-Wing
BACKGROUND: With extraction of cardiovascular implantable electronic devices (CIED) increasingly necessitated, various studies have contemplated to investigate clinical predictors for its success and complications. Intrinsic parameters of CIED leads have been studied less extensively and are the foci of this study. METHODS: Three major pacemaker manufacturers accepted invitation. Leads then underwent tensile test in-vitro with their composite tensile strength (TS) compared...
May 14, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29755723/a-novel-method-of-color-appearance-simulation-using-achromatic-point-locus-with-lightness-dependence
#8
Ichiro Kuriki
The purpose of the present study is to propose a simple algorithm for color appearance simulation under a color illuminant. Achromatic point is a chromaticity of rays that appear neither red nor green, neither blue nor yellow under a given illuminant condition. Saturation and hue of surface colors are evaluated with respect to the achromatic point of the same lightness, while the achromatic point under a colored illuminant depends on the lightness tested. We previously found that this achromatic point locus can be simply approximated as a line with a parallel offset from the lightness axis of CIE LAB space normalized to daylight...
March 2018: I-Perception
https://www.readbyqxmd.com/read/29755718/categorisation-of-colour-terms-using-new-validation-tools-a-case-study-and-implications
#9
Shabnam Arbab, Jonathan A Brindle, Barbara S Matusiak, Christian A Klöckner
This article elaborates on the results of a field experiment conducted among speakers of the Chakali language, spoken in northern Ghana. In the original study, the Color-aid Corporation Chart was used to perform the focal task in which consultants were asked to point at a single colour tile on the chart. However, data from the focal task could not be analysed since the Color-aid tiles had not yet been converted into numerical values set forth by the Commission internationale de l'éclairage (CIE). In this study, the full set of 314 Color-aid tiles were measured for chromaticity and converted into the CIE values at the Daylight Laboratory of the Norwegian University of Science and Technology...
March 2018: I-Perception
https://www.readbyqxmd.com/read/29755632/is-there-always-a-need-for-permanent-pacemaker-replacement-after-device-infection-a-tale-of-two-patients
#10
Munish Sharma, Daniel A N Mascarenhas
There has been an increase in number of cardiac implantable electronic devices (CIEDs) implantation and with this we have witnessed increased rates of CIED infection mainly in elderly population. It is important to assess conditions that may not reliably improve with cardiac pacing or those who lack adequate beneficial effect from permanent pacing before contemplating implantation or reimplantation of these devices. Sometimes, the initial cardiac pathology may revert obviating the need for reimplantation as in the two cases that we have discussed below...
April 2018: Cardiology Research
https://www.readbyqxmd.com/read/29749938/impact-of-abandoned-leads-on-cardiovascular-implantable-electronic-device-infections-a-propensity-matched-analysis-of-medic-multicenter-electrophysiologic-device-infection-cohort
#11
Thomas A Boyle, Daniel Z Uslan, Jordan M Prutkin, Arnold J Greenspon, Larry M Baddour, Stephan B Danik, Jose M Tolosana, Katherine Le, Jose M Miro, James E Peacock, Muhammad R Sohail, Holenarasipur R Vikram, Roger G Carrillo
OBJECTIVES: This study sought to evaluate the impact of abandoned cardiovascular implantable electronic device (CIED) leads on the presentation and management of device-related infections. BACKGROUND: Device infection is a serious consequence of CIEDs and necessitates removal of all hardware for attempted cure. The merits of extracting or retaining presumed sterile but nonfunctioning leads is a subject of ongoing debate. METHODS: The MEDIC (Multicenter Electrophysiologic Device Infection Cohort) prospectively enrolled patients with CIED infections at 10 institutions in the United States and abroad between January 1, 2009, and December 31, 2012...
February 2018: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29747494/comparison-of-meat-quality-fatty-acid-composition-and-aroma-volatiles-of-chikso-and-hanwoo-beef
#12
Dicky Tri Utama, Chang Woo Lee, Yeon Soo Park, Aera Jang, Sung Ki Lee
Objective: Although Hanwoo has been selected as the superior commercial beef cattle breed in Korea, Chikso (Korean brindle cattle) is still recognized as a valuable breed for beef production. The aim of this study was to compare the meat quality, fatty acid composition and aroma volatiles of beef from Chikso and Hanwoo steers maintained under identical feed management, as information regarding these characteristics is still limited. Methods: A total of 19 carcasses with a quality grade of 1 were selected, and strip loin (longissimus lumborum) cuts were collected from 11 Hanwoo carcasses and 8 Chikso carcasses...
April 25, 2018: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/29747127/wideband-lge-mri-permits-unobstructed-viewing-of-myocardial-scarring-in-a-patient-with-an-mr-conditional-subcutaneous-implantable-cardioverter-defibrillator
#13
Amir Ali Rahsepar, Jeremy D Collins, Bradley P Knight, KyungPyo Hong, James C Carr, Daniel Kim
A subcutaneous implantable cardioverter-defibrillator (S-ICD) is an alternative device for prevention of sudden cardiac death, without any leads within the heart. Patients implanted with any type of ICD may need catheter ablation of ventricular tachycardia (VT) to reduce the overall arrhythmia burden (e.g., recurrent monomorphic VT) and lower the incidence of painful shocks induced by the device. Late gadolinium enhancement (LGE) MRI is a useful pre-test for guiding VT ablation, because it can be used to map myocardial scar and produce better outcomes...
May 4, 2018: Clinical Imaging
https://www.readbyqxmd.com/read/29745977/a-simple-technique-for-relocating-chronic-cied-leads-to-a-sub-pectoral-position-for-relief-of-erosion-and-pain
#14
Aaron B Hesselson
BACKGROUND: Methodology specific for moving superficial chronically implanted trans-venous pacing leads to a sub-pectoral pocket is not described in the literature. Relocation of pre-pectoral leads and generator to a sub-muscular pocket for relief of erosion and pain with minimal pectoral trauma is possible by applying a variant of a previously described sub-mammary tunneling technique. METHODS: All patients presenting for device follow-up, elective battery replacement, or system upgrade over an 8-month period were considered for relocation if experiencing significant thinning or pain over their pre-pectoral implant...
May 10, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29745015/trivalent-rare-earth-activated-hexagonal-lanthanum-fluoride-laf-3-re-3-where-re-tb-sm-dy-and-tm-nanocrystals-synthesis-and-optical-properties
#15
Singh Kasturi, R Marikumar, Sivakumar Vaidyanathan
The LaF3 nanocrystals through a facile hydrothermal route with hexagonal structures have been synthesized via doping of trivalent rare earth (RE3+ ) ions - RE = Tb, Sm, Dy and Tm - with rod-like and perforated morphologies using NH4 F as fluorine precursor. Hexagonal phase formation was confirmed by powder X-ray diffraction. The crystalline sizes were calculated by the Scherrer equation where found to have an average crystalline size of 12 to 35 nm. The morphological studies of the nanocrystals were carried out by means of transmission electron microscopy (TEM)...
May 10, 2018: Luminescence: the Journal of Biological and Chemical Luminescence
https://www.readbyqxmd.com/read/29743907/circulating-mirna-levels-differ-with-respect-to-carotid-plaque-characteristics-and-symptom-occurrence-in-patients-with-carotid-artery-stenosis-and-provide-information-on-future-cardiovascular-events
#16
Rafal Badacz, Tadeusz Przewłocki, Jacek Gacoń, Ewa Stępień, Francisco J Enguita, Izabela Karch, Krzysztof Żmudka, Anna Kabłak-Ziembicka
Introduction: Circulating microRNAs (miRNAs) levels are potentially important biomarkers and therapeutic targets of cerebral ischemic event (CIE) in patients with internal carotid artery stenosis (ICAS). Aim: This prospective study investigated associations between circulating miRNAs and symptomatic and asymptomatic ICAS, carotid plaque morphology and future cardiovascular events. Material and methods: Circulating miRNAs (miR-1-3p, miR-16-5p, miR-34a-5p, miR-124-3p, miR-133a-3p, miR-133b, miR-134-5p, miR-208b-3p, miR-375 and miR-499-5p) were analyzed in 92 consecutive patients with significant ICAS referred for revascularization...
2018: Postępy W Kardiologii Interwencyjnej, Advances in Interventional Cardiology
https://www.readbyqxmd.com/read/29743197/regulatory-divergence-in-wound-responsive-gene-expression-between-domesticated-and-wild-tomato
#17
Ming-Jung Liu, Koichi Sugimoto, Sahra Uygun, Nicholas Panchy, Michael S Campbell, Mark Yandell, Gregg A Howe, Shin-Han Shiu
The evolution of transcriptional regulatory mechanisms is central to how stress response and tolerance differ between species. However, it remains largely unknown how divergence in cis-regulatory sites and, subsequently, transcription factor (TF) binding specificity contribute to stress-responsive expression divergence, particularly between wild and domesticated spe-cies. By profiling wound-responsive gene transcriptomes in wild Solanum pennellii and do-mesticated S. lycopersicum, we found extensive wound-response divergence and identified 493 S...
May 9, 2018: Plant Cell
https://www.readbyqxmd.com/read/29740728/transvenous-cardiac-implantable-electronic-device-implantation-in-patients-with-persistent-left-superior-vena-cava-in-a-tertiary-center
#18
Xueying Chen, Ziqing Yu, Jin Bai, Wei Wang, Shengmei Qin, Jingfeng Wang, Zhe Sun, Fei Han, Yangang Su, Junbo Ge
PURPOSE: Persistent left superior vena cava (PLSVC) is rare and often asymptomatic, which might cause difficulties in the implantation of cardiac implantable electronic devices (CIEDs). The aim of this study was to determine the prevalence of PLSVC and to study the clinical characteristics and significance of PLSVC in patients with CIED implantation. METHODS: Thirty-three patients with PLSVC were collected from 7047 CIED recipients over recent 10 years in our center...
May 9, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29726877/a-color-tunable-and-white-light-emitting-ca-2-si-5-n-8-ce-3-eu-2-phosphor-via-efficient-energy-transfer-for-near-uv-white-leds
#19
Chao Li, Hongwei Zheng, Hengwei Wei, Shijie Qiu, Ling Xu, Xiaoming Wang, Huan Jiao
Achieving tunable color and white light emission in a single phase phosphor is a challenging issue. Here, a series of Ce3+-Eu2+ co-doped Ca2Si5N8 phosphors were successfully synthesized by a high temperature solid state method. Luminescence properties, energy transfer (ET) and thermal quenching of the as-synthesized samples were investigated in detail. The emission color of as-prepared Ca1.94Na0.03Si5N8:0.03Ce3+,yEu2+ (0.0000 ≤ y ≤ 0.0035) could be tuned from blue to white light and eventually to orange via ET by changing the Ce3+/Eu2+ ratio...
May 4, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29721120/experience-managing-pain-associated-with-supraclavicular-nerves-compressed-by-a-cardiac-implantable-electrical-device-diagnosed-by-the-local-nerve-block
#20
Hiroshi Imada, Koji Fukuzawa, Kunihiko Kiuchi, Ken-Ichi Hirata, Hitoaki Sato
A 72-year-old man with ischemic cardiomyopathy was referred to undergo an implantation of a cardiac implantable electrical device (CIED). A pocket was created subcutaneously on the left anterior chest. After the operation, he complained of severe pain irradiating to his left posterior shoulder. The local anesthetic nerve block by a local infusion of mepivacaine revealed the pain was associated with the supraclavicular nerve. We re-created the pocket and shifted the generator toward the inner side, and the irradiating pain vanished...
February 2018: Journal of Arrhythmia
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