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https://www.readbyqxmd.com/read/28338314/surface-layer-evolution-on-graphite-during-electrochemical-sodium-tetraglyme-co-intercalation
#1
Julia Maibach, Fabian Jeschull, Daniel Brandell, Kristina Edstrom, Mario Valvo
One obstacle in sodium ion batteries is the lack of suitable anode materials. As recently shown, the most common anode material of the state of the art lithium ion batteries, graphite, can be used for sodium ion storage as well, if ether-based electrolyte solvents are used. These solvents co-intercalate with the sodium ions leading to the highly reversible formation of ternary graphite intercalation compounds (t-GIC). In order for the solvent co-intercalation to work efficiently, it is expected that only a very thin surface layer forms during electrochemical cycling...
March 24, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28332659/hydration-controlled-anisotropic-and-giant-permittivity-in-teg-functionalized-eumelanin
#2
Marianna Ambrico, Paolo F Ambrico, Teresa Ligonzo, Antonio Cardone, Maria Grazia Bridelli, Giuseppe Casamassima, Paola Manini, Marco d'Ischia
Although it has long been known that the peculiar electronic-ionic conductor behavior of eumelanin is critically dependent on hydration, the detailed mechanisms by which water-polymer interactions control and affect the conduction properties have remained largely obscure. In this paper, we report a remarkable anisotropy and giant polarization effect in a synthetic eumelanin (TEGMe) chemically functionalized with hydrophilic TEG residues. FT-IR analyses of water sorption isotherms and AC measurements were consistent with a microporous structure binding or hosting mainly isolated water molecules...
March 23, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28298662/the-teg-%C3%A2-6s-on-shaky-ground-a-novel-assessment-of-the-teg-%C3%A2-6s-performance-under-a-challenging-condition
#3
Martin Gill
Thromboelastography(®) (TEG(®)) is used to guide clinical decision-making across many medical and surgical subspecialties. Advances in this field have resulted in analyzers becoming increasingly user friendly, and have led to a reduction in the possibility of user error. The new TEG(®)6s does not come with the warnings of vibration and movement avoidance of its predecessor. It was decided to test the capability of this device while being subject to motion. TEG(®)6s machine 1 was placed in an environment free from motion...
March 2017: Journal of Extra-corporeal Technology
https://www.readbyqxmd.com/read/28271672/evaluation-of-the-lyophilized-platelets-function-by-thromboelastography-in-an-in-vitro-platelet-transfusion-model
#4
Xiaojun Deng, Xinguang Wu, Gaoshun Ge, Lihong Huang, Ning Li, Dan Wang
BACKGROUND: At present, liquid conserved platelets (PLTs) can only be stored at 22°C for up to 5 days. Waste of outdated PLTs and short supply of fresh PLTs were both seen in blood banks. Lyophilized PLTs were considered as one of the candidate replacements for liquid conserved PLTs. It is important to evaluate the function before it can be used in clinical trial. METHODS: In this study, an in vitro platelet transfusion model was established to evaluate the function of rehydrated lyophilized platelets (RLPs) by thromboelastography (TEG)...
March 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28271065/the-reliability-of-the-tracheoesophageal-groove-and-the-ligament-of-berry-as-landmarks-for-identifying-the-recurrent-laryngeal-nerve-a-cadaveric-study-and-meta-analysis
#5
REVIEW
Brandon Michael Henry, Beatrice Sanna, Matthew J Graves, Silvia Sanna, Jens Vikse, Iwona M Tomaszewska, R Shane Tubbs, Krzysztof A Tomaszewski
Purpose. The aim of this meta-analysis was to provide a comprehensive evidence-based assessment, supplemented by cadaveric dissections, of the value of using the Ligament of Berry and Tracheoesophageal Groove as anatomical landmarks for identifying the Recurrent Laryngeal Nerve. Methods. Seven major databases were searched to identify studies for inclusion. Eligibility was judged by two reviewers. Suitable studies were identified and extracted. MetaXL was used for analysis. All pooled prevalence rates were calculated using a random effects model...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28190562/a-combined-approach-to-early-detect-in-vitro-drug-induced-hemostatic-changes-in-preclinical-safety
#6
Myriam Defontis, Serge Côté, David Ledieu
Early detection of drug-induced alterations of hemostasis is challenging. Drugs can affect different components of the Virchow's triad and measurement of plasmatic coagulation times lacks sensitivity. New techniques for a more global assessment of the hemostasis are now available: the impedance platelet aggregometry, the thromboelastography and the thrombin generation measurement. The aim of this study was to evaluate three techniques (i.e.: Multiplate(®), TEG(®) and CAT) for the in vitro detection of the effect of a drug known to induce hemostatic alterations in a preclinical safety environment...
February 9, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28153582/changing-trends-in-antimicrobial-susceptibility-pattern-of-bacterial-isolates-in-a-burn-unit
#7
Narendra Pal Singh, Mayuri Rani, Kavita Gupta, Tanu Sagar, Iqbal Rajinder Kaur
INTRODUCTION: Emerging antimicrobial resistance in nosocomial bacterial isolates, limits the available treatment options for burn wound infections, among them multi-drug resistant Gram negative bacteria and methicillin-resistant Staphylococcus aureus (MRSA) are major contributors to the increase in morbidity and mortality rates. MATERIAL AND METHODS: A retrospective cross-sectional study was done in the Department of Microbiology, University College of Medical Sciences & Guru Teg Bahadur Hospital, Delhi...
January 30, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28107004/microviscosity-offered-by-ionic-liquids-and-ionic-liquid-glycol-mixtures-is-probe-dependent
#8
Anu Kadyan, Siddharth Pandey
Interactions present within the solubilizing media constituted of ionic liquids (ILs) govern the outcomes of chemical processes carried out within such media by controlling the behavior of solutes dissolved therein. Fluidity afforded by IL-based media, in this context, not only reveals interactions present within the system, but it also helps decide whether the system is suitable for an application. The response of spectroscopic microviscosity probes dissolved in IL and IL-based solvents, in this regard, reveals information on both solute-solvent and solvent-solvent interactions present within the system...
February 9, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/27894845/thromboelastography-demonstrates-perioperative-hypercoagulability-in-hepato-pancreato-biliary-patients-and-supports-routine-administration-of-preoperative-and-early-postoperative-venous-thromboembolism-chemoprophylaxis
#9
Anh-Thu Le, Jennifer W Harris, Erin Maynard, Sean P Dineen, Ching-Wei D Tzeng
BACKGROUND: We hypothesized hepato-pancreato-biliary (HPB) surgery patients are more likely to be hypercoagulable than hypocoagulable, and that bleeding risks from VTE chemoprophylaxis are low. This study sought to use thromboelastography (TEG) to compare coagulation profiles with bleeding/thrombotic events in HPB patients receiving standardized perioperative chemoprophylaxis. METHODS: Consecutive patients undergoing HPB resections by three surgeons at one institution (January 2014-December 2015) received preoperative and early postoperative VTE chemoprophylaxis and were evaluated with TEGs...
February 2017: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/27894492/management-of-trauma-induced-coagulopathy-with-thrombelastography
#10
REVIEW
Eduardo Gonzalez, Ernest E Moore, Hunter B Moore
Viscoelastic assays, such as thrombelastography (TEG) and rotational thrombelastometry (ROTEM), have emerged as point-of-care tools that can guide the hemostatic resuscitation of bleeding injured patients. This article describes the role of TEG in contemporary trauma care by explaining this assay's methodology, clinical applications, and result interpretation through description of supporting studies to provide the reader with an evidence-based user's guide. Although TEG and ROTEM are assays based on the same viscoelastic principle, this article is focused on data supporting the use of TEG in trauma, because it is available in trauma centers in North America; ROTEM is mostly available in Europe...
January 2017: Critical Care Clinics
https://www.readbyqxmd.com/read/27887785/thromboelastography-teg%C3%A2-demonstrates-that-tinzaparin-4500-international-units-has-no-detectable-anticoagulant-activity-after-caesarean-section
#11
S Griffiths, C Woo, V Mansoubi, A Riccoboni, A Sabharwal, S Napier, M Columb, M Laffan, G Stocks
BACKGROUND: Low molecular weight heparin is routinely used for thromboprophylaxis in pregnancy and the puerperium. Consensus guidelines recommend waiting 10-12h after administration of a thromboprophylactic dose of low molecular weight heparin before performing a neuraxial block or removing an epidural catheter. Thromboelastography (TEG®) has been reported to be sensitive to the effects of enoxaparin 4h after administration. The purpose of this study was to use TEG to examine coagulation changes in the first 10h after a thromboprophylactic dose of tinzaparin in an attempt to ratify the current consensus guidelines about timing of neuraxial blockade and epidural catheter removal...
February 2017: International Journal of Obstetric Anesthesia
https://www.readbyqxmd.com/read/27869252/resin-dentin-bond-stability-of-experimental-4-meta-based-etch-and-rinse-adhesives-solvated-by-ethanol-or-acetone
#12
Cristiane Mariote Amaral, Alice Marques Diniz, Eugênio Braz Rodrigues Arantes, Glauco Botelho Dos Santos, Jaime Dutra Noronha-Filho, Eduardo Moreira da Silva
PURPOSE: To investigate the influence of 4-META concentration and type of solvent on the degree of conversion (DC%) and resin-dentin bond stability of experimental etch-and-rinse adhesives. MATERIALS AND METHODS: Four different concentrations of 4-META (12 wt%, 20 wt%, 30 wt%, 40 wt%) were added to a model adhesive system consisting of TEG-DMA (25 wt%), UDMA (20 wt%), HEMA (30 wt%), water (4 wt%), camphorquinone (0.5 wt%), and tertiary amine (0.5 wt%) dissolved in 20% acetone (A12, A20, A30 and A40) or 20% ethanol (E12, E20, E30 and E40)...
November 18, 2016: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/27820867/triethylene-glycol-up-regulates-virulence-associated-genes-and-proteins-in-streptococcus-mutans
#13
Lida Sadeghinejad, Dennis G Cvitkovitch, Walter L Siqueira, J Paul Santerre, Yoav Finer
Triethylene glycol dimethacrylate (TEGDMA) is a diluent monomer used pervasively in dental composite resins. Through hydrolytic degradation of the composites in the oral cavity it yields a hydrophilic biodegradation product, triethylene glycol (TEG), which has been shown to promote the growth of Streptococcus mutans, a dominant cariogenic bacterium. Previously it was shown that TEG up-regulated gtfB, an important gene contributing to polysaccharide synthesis function in biofilms. However, molecular mechanisms related to TEG's effect on bacterial function remained poorly understood...
2016: PloS One
https://www.readbyqxmd.com/read/27792988/evaluation-of-maternal-early-obstetric-warning-system-meows-chart-as-a-predictor-of-obstetric-morbidity-a-prospective-observational-study
#14
Anju Singh, Kiran Guleria, Neelam B Vaid, Sandhya Jain
OBJECTIVES: Maternal Early Obstetric Warning System (MEOWS) chart adopted from CEMACH 2003-2005 report is based on the principle that abnormalities in physiological parameters precede critical illness. The 'track and trigger' of physiological parameters on this chart can aid in recognition of maternal morbidity at an early stage, ultimately halting the cascade of severe maternal morbidity and mortality. The objectives of our study were to evaluate MEOWS chart as a bedside screening tool for predicting obstetric morbidity and to correlate each physiological parameter individually with obstetric morbidity...
December 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/27779597/abnormalities-in-fibrinolysis-at-the-time-of-admission-are-associated-with-deep-vein-thrombosis-mortality-and-disability-in-a-pediatric-trauma-population
#15
Christine M Leeper, Matthew D Neal, Christine McKenna, Jason L Sperry, Barbara A Gaines
BACKGROUND: Abnormalities in fibrinolysis are common and associated with increased mortality in injured adults. While hyperfibrinolysis (HF) and fibrinolysis shutdown (SD) are potential prognostic indicators and treatment targets in adults, these derangements are not well described in a pediatric trauma cohort. METHODS: This was a prospective analysis of highest level trauma activations in subjects aged 0 to 18 years presenting to our academic center between June 1, 2015, and July 31, 2016, with admission rapid thrombelastograph...
January 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/27765582/major-liver-resection-systemic-fibrinolytic-activity-and-the-impact-of-tranexamic-acid
#16
Paul J Karanicolas, Yulia Lin, Jordan Tarshis, Calvin H L Law, Natalie G Coburn, Julie Hallet, Barto Nascimento, Janusz Pawliszyn, Stuart A McCluskey
BACKGROUND: Hyperfibrinolysis may occur due to systemic inflammation or hepatic injury that occurs during liver resection. Tranexamic acid (TXA) is an antifibrinolytic agent that decreases bleeding in various settings, but has not been well studied in patients undergoing liver resection. METHODS: In this prospective, phase II trial, 18 patients undergoing major liver resection were sequentially assigned to one of three cohorts: (i) Control (no TXA); (ii) TXA Dose I - 1 g bolus followed by 1 g infusion over 8 h; (iii) TXA Dose II - 1 g bolus followed by 10 mg/kg/hr until the end of surgery...
December 2016: HPB: the Official Journal of the International Hepato Pancreato Biliary Association
https://www.readbyqxmd.com/read/27651627/role-of-thromboelastography-versus-coagulation-screen-as-a-safety-predictor-in-pre-eclampsia-eclampsia-patients-undergoing-lower-segment-caesarean-section-in-regional-anaesthesia
#17
Asrar Ahmad, Monica Kohli, Anita Malik, Megha Kohli, Jaishri Bogra, Haider Abbas, Rajni Gupta, B B Kushwaha
PURPOSE: In this study, we aimed to correlate thromboelastography (TEG) variables versus conventional coagulation profile in all patients presenting with pre-eclampsia/eclampsia and to see whether TEG would be helpful for evaluating coagulation in parturients before regional anaesthesia. MATERIALS AND METHODS: This was a prospective study on 100 pre-eclampsia/eclampsia patients undergoing lower-segment caesarean section under regional anaesthesia. Two blood samples were collected...
October 2016: Journal of Obstetrics and Gynaecology of India
https://www.readbyqxmd.com/read/27616611/-use-of-thrombelastography-to-guide-posttraumatic-hemostatic-therapy-more-coagulation-factor-concentrates-and-less-allogenic-blood-transfusion
#18
J S David, E Imhoff, S Parat, L Augey, M-O Geay-Baillat, P Incagnoli, K Tazarourte
Viscoelastic technics are used for 10 years and include the ROTEM(®) and the TEG(®). These devices that exploit the viscoelastic properties of the clotting blood, allow a rapid and global analysis of the haemostatic process taking into account all the process interfering with haemostasis such as inflammation. It has been shown that the use of these technics in clinical situations such as trauma, postpartum haemorrhage, gastrointestinal bleeding or cardiac surgery may reduce the need for blood product, the cost and perhaps may improve the outcome of the patients...
November 2016: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/27566845/the-clinical-relevance-of-altered-fibrinogen-packaging-in-the-presence-of-17%C3%AE-estradiol-and-progesterone
#19
Albe C Swanepoel, Amcois Visagie, Zelda de Lange, Odette Emmerson, Vance G Nielsen, Etheresia Pretorius
BACKGROUND: The effect of endogenous hormone concentrations, specifically 17β-estradiol and progesterone, on fibrin network formation has not been established. OBJECTIVES: It is essential to understand natural hormone mechanisms since these hormones are still present in circulation while hormonal contraceptives, which are associated with increased risk of venous thromboembolism, are used. METHODS: Due to the fact that these hormones are known to increase hypercoagulability and the prothrombotic state scanning electron microscopy (SEM), atomic force microscopy (AFM), thromboelastography (TEG) and turbidimetry were employed to investigate the morphology, surface roughness, viscoelastic properties and formation and lysis of fibrin...
October 2016: Thrombosis Research
https://www.readbyqxmd.com/read/27528489/platelet-concentrate-functionality-assessed-by-thromboelastography-or-rotational-thromboelastometry
#20
Ahmad F Arbaeen, Katherine Serrano, Elena Levin, Dana V Devine
BACKGROUND: There is poor correlation between in vivo platelet concentrate (PC) transfusion outcome and in vitro tests, which typically do not test the functional effectiveness of platelets (PLTs), but rather measure PLT characteristics. We hypothesize that the application of thromboelastography (TEG) or rotational thromboelastometry (ROTEM) to evaluate the procoagulant activity of stored PLTs can predict PLT quality and, ultimately, distinguish among hyper- and nonresponsive PCs. Additionally, we hypothesize that due to their procoagulant properties, PLT microvesicles (PMVs) contribute to the clot signature in these methods...
August 16, 2016: Transfusion
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