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https://www.readbyqxmd.com/read/29347191/time-reversal-symmetry-for-systems-in-a-constant-external-magnetic-field
#1
Sara Bonella, Alessandro Coretti, Lamberto Rondoni, Giovanni Ciccotti
The time-reversal properties of charged systems in a constant external magnetic field are reconsidered in this paper. We show that the evolution equations of the system are invariant under a new symmetry operation that implies a new signature property for time-correlation functions under time reversal. We then show how these findings can be combined with a previously identified symmetry to determine, for example, null components of the correlation functions of velocities and currents and of the associated transport coefficients...
July 2017: Physical Review. E
https://www.readbyqxmd.com/read/29328551/failure-of-monotherapy-in-clinical-practice-in-patients-with-type-2-diabetes-the-korea-national-diabetes-program
#2
Ja Young Jeon, Soo Jin Lee, Sieun Lee, Soo Jin Kim, Seung Jin Han, Hae Jin Kim, Dae Jung Kim, Young Seol Kim, Jeong Taek Woo, Kyu Jeung Ahn, Moonsuk Nam, Sei Hyun Baik, Yongsoo Park, Kwan-Woo Lee
AIMS: We investigated the failure of monotherapy in patients with type 2 DM in real practice settings. METHODS: The Korea National Diabetes Program was a prospective, multicenter observational cohort study of type 2 DM patients in Korea. Of the 3,950 patients enrolled in the study, we studied 998 who were continuously maintained on monotherapy for at least 90 days at six participating centers. To balance the baseline characteristics of patients in each group, we employed propensity-matching at a 1:1 ratio (metformin vs...
January 12, 2018: Journal of Diabetes Investigation
https://www.readbyqxmd.com/read/29320611/designing-novel-nonsymmetric-ag-agi-nanoplates-for-superior-photocatalytic-activity
#3
Misbah Ullah Khan, Hongjun You, Xiaotong Liu, Lingling Zhang, Jixiang Fang
Precisely engineering the decoration of metal nanoparticles on the special surface of semiconductor represents a promising strategy to design efficient metal-semiconductor heterostructured photocatalysts. This study demonstrates a versatile soft-template method to fabricate a novel nonsymmetrical heterostructured Ag/AgI nanoplate, in which only one side surface of the nanoplate is covered with uniform 2D Ag nanoweb. Compared with symmetrical heterostructure, the nonsymmetrical heterostructure may further facilitate the separation of photogenerated electron-hole pairs and shows a greatly enhanced photocatalytic activity...
January 10, 2018: Small
https://www.readbyqxmd.com/read/29317029/fluorescent-sensing-of-ascorbic-acid-based-on-iodine-induced-oxidative-etching-and-aggregation-of-lysozyme-templated-silver-nanoclusters
#4
Qinchao Mo, Fang Liu, Jing Gao, Meiping Zhao, Na Shao
In this work, we developed a sensitive and highly selective fluorescent approach for the detection of ascorbic acid (AA) by taking advantage of the oxidative etching effect of iodine (I2) on the lysozyme-stabilized silver nanoclusters (dLys-AgNCs) with fluorescence quenching. I2 could be produced from the redox reaction between iodate (IO3-) and AA, and thus the fluorescence intensity of dLys-AgNCs was turned off significantly in the coexistence of IO3- and AA. The fluorescence quenching of dLys-AgNCs had a good linear relationship with AA concentration, which allowed the detection of AA in the range from 0...
March 20, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29303209/point-of-care-gastrointestinal-and-urinary-tract-sonography-in-daily-evaluation-of-gastrointestinal-dysfunction-in-critically-ill-patients-guts-protocol
#5
Angel Augusto Perez-Calatayud, Raul Carrillo-Esper, Eduardo Daniel Anica-Malagon, Jesus Carlos Briones-Garduño, Emilio Arch-Tirado, Robert Wise, Manu L N G Malbrain
PURPOSE: There is currently a lack of universally accepted criteria for gastrointestinal (GI) failure or dysfunction in critical care. Also, the clinical assessment of intestinal function is notoriously difficult and thus often goes unrecognized, contributing to poor outcomes. A recent grading system has been proposed to define acute gastrointestinal injury (AGI) in conjunction with other organ function scores (e.g., SOFA). Ultrasonography has become widely accepted as a diagnostic tool for GI problems and pathology...
January 5, 2018: Anaesthesiology Intensive Therapy
https://www.readbyqxmd.com/read/29290448/technical-note-validation-of-an-ear-tag-accelerometer-sensor-to-determine-rumination-eating-and-activity-behaviors-of-grazing-dairy-cattle
#6
G M Pereira, B J Heins, M I Endres
The objective of this study was to validate an ear-tag accelerometer sensor (CowManager SensOor, Agis Automatisering BV, Harmelen, the Netherlands) using direct visual observations in a grazing dairy herd. Lactating crossbred cows (n = 24) were used for this experiment at the University of Minnesota West Central Research and Outreach Center grazing dairy (Morris, MN) during the summer of 2016. A single trained observer recorded behavior every minute for 6 h for each cow (24 cows × 6 h = 144 h of observation total)...
December 28, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29272951/molecular-geometries-and-other-properties-of-h2o%C3%A2-agi-and-h3n%C3%A2-agi-as-characterised-by-rotational-spectroscopy-and-ab-initio-calculations
#7
Chris Medcraft, Eva Gougoula, Dror M Bittner, John C Mullaney, Susana Blanco, David P Tew, Nicholas R Walker, Anthony C Legon
The rotational spectra of H3N⋯AgI and H2O⋯AgI have been recorded between 6.5 and 18.5 GHz by chirped-pulse Fourier-transform microwave spectroscopy. The complexes were generated through laser vaporisation of a solid target of silver or silver iodide in the presence of an argon gas pulse containing a low concentration of the Lewis base. The gaseous sample subsequently undergoes supersonic expansion which results in cooling of rotational and vibrational motions such that weakly bound complexes can form within the expanding gas jet...
December 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29250387/crystal-structure-of-a-twisted-ribbon-type-double-stranded-agi-coordination-polymer-catena-poly-silver-i-%C3%AE-3-bis-pyridin-3-ylmeth-yl-sulfane-%C3%AE%C2%BA3n-n-s-nitrate
#8
Suk-Hee Moon, Youngjin Kang, Ki-Min Park
The asymmetric unit in the title compound, {[Ag(C12H12N2S)]·NO3} n or {[AgL]·NO3} n , L = bis-(pyridin-3-ylmeth-yl)sulfane, consists of an AgI cation bound to a pyridine N atom of an L ligand and an NO3- anion that is disordered over two orientations in an 0.570 (17):0.430 (17) occupancy ratio. Each AgI cation is coordinated by two pyridine N atoms from adjacent L ligands to form an infinite zigzag chain along [110]. In addition, each AgI ion binds to an S donor from a third L ligand in an adjacent parallel chain, resulting in the formation of a twisted-ribbon type of double-stranded chain propagating along the [110] or [1-10] directions...
October 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/29250377/crystal-structure-of-an-agi-inter-calation-compound-catena-poly-silver-i-%C3%AE-n-pyridin-3-ylmeth-yl-pyridin-3-amine-%C3%AE%C2%BA2n-n-hexa-fluorido-phosphate-aceto-nitrile-disolvate
#9
Suk-Hee Moon, Youngjin Kang, Ki-Min Park
The asymmetric unit in the title compound, [Ag(C11H11N3)]PF6·2CH3CN or {[AgL]·PF6·2CH3CN} n , L = N-(pyridin-3-ylmeth-yl)pyridin-3-amine, comprises one AgI atom, one L ligand, two aceto-nitrile solvent mol-ecules and one PF6- anion disordered over two orientations in a 0.567 (11):0.433 (11) ratio. Each AgI atom is coordinated by two pyridine N atoms from two L ligands in a slightly distorted linear coordination geometry [N-Ag-N = 170.55 (8)°]. Each L ligand bridges two AgI ions, resulting in the formation of a zigzag chain propagating along the [101] direction...
October 1, 2017: Acta Crystallographica. Section E, Crystallographic Communications
https://www.readbyqxmd.com/read/29239785/cytokines-dysregulation-in-schizophrenia-a-systematic-review-of-psychoneuroimmune-relationship
#10
REVIEW
Daniela Rodrigues-Amorim, Tania Rivera-Baltanás, Carlos Spuch, Hector J Caruncho, África González-Fernandez, Jose M Olivares, Roberto C Agís-Balboa
INTRODUCTION: Schizophrenia is a multifactorial psychiatric disease with complex interactions among the brain and the immune system. A psycho-immune relationship underling schizophrenia is supported by several studies and integrates a specific area of knowledge - psychoneuroimmunology. METHODS: A systematic review was performed by 2009 Preferred Reporting Items (PRISMA) recommendations. Based on the inclusion/exclusion criteria, publications with relevant information (evaluated by the Joanna Briggs Institute Critical Appraisals tools to quality assessment) were included...
November 24, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/29226453/silver-i-mediated-base-pairs-in-dna-sequences-containing-7-deazaguanine-cytosine-base-pairs-towards-dna-with-entirely-metallated-watson-crick-base-pairs
#11
José M Méndez-Arriaga, Carmen R Maldonado, José A Dobado, Miguel A Galindo
DNA sequences comprising non-canonical 7-deazaguanine (7CG) and canonical cytosine (C) are capable of forming Watson-Crick base pairs via hydrogen bonds as well as silver(I)-mediated base pairs by coordination to central silver(I) ions. Duplex I and II containing 7CG and C have been synthesized and characterized. The incorporation of silver(I) ions into these duplexes has been studied by means of temperature-dependent UV-spectroscopy, circular dichroism and DFT calculations. The results suggest the formation of DNA molecules comprising contiguous metallated 7CG-AgI-C Watson-Crick base pairs that preserve the original B-type conformation...
December 10, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29214677/highly-electrophilic-catalytically-active-and-redox-responsive-cobaltoceniumyl-and-ferrocenyl-triazolylidene-coinage-metal-complexes
#12
Stefan Vanicek, Maren Podewitz, Jessica Stubbe, Dennis Schulze, Holger Kopacka, Klaus Wurst, Thomas Müller, Petra Lippmann, Simone Haslinger, Herwig Schottenberger, Klaus R Liedl, Ingo Ott, Biprajit Sarkar, Benno Bildstein
A convenient access to a triad of triazoles with ferrocenyl and cobaltoceniumyl substituents are reported. N-Alkylation, deprotonation and metalation with CuI/AgI/AuI synthons affords the heteroleptic triazolylidene complexes. Due to the combination of neutral, electron-donating ferrocenyl substituents and cationic, strongly electron-withdrawing cobaltocenium substituents, the mesoionic carbene (MIC) ligands of these complexes are electronically interesting "push-pull", "pull-push" and "pull-pull" metalloligands with further switchable redox states based on their fully reversible FeII/FeIII, (ferrocene/ferrocenium) and CoIII/CoII, (cobaltocenium/cobaltocene) redox couples...
December 7, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29203067/personalized-prediction-of-glaucoma-progression-under-different-target-intraocular-pressure-levels-using-filtered-forecasting-methods
#13
Pooyan Kazemian, Mariel S Lavieri, Mark P Van Oyen, Chris Andrews, Joshua D Stein
PURPOSE: To generate personalized forecasts of how patients with open-angle glaucoma (OAG) experience disease progression at different intraocular pressure (IOP) levels to aid clinicians with setting personalized target IOPs. DESIGN: Secondary analyses using longitudinal data from 2 randomized controlled trials. PARTICIPANTS: Participants with moderate or advanced OAG from the Collaborative Initial Glaucoma Treatment Study (CIGTS) or the Advanced Glaucoma Intervention Study (AGIS)...
December 1, 2017: Ophthalmology
https://www.readbyqxmd.com/read/29201905/evaluation-of-resins-for-stereolithographic-3d-printed-surgical-guides-the-response-of-l929-cells-and-human-gingival-fibroblasts
#14
Christoph Kurzmann, Klara Janjić, Hassan Shokoohi-Tabrizi, Michael Edelmayer, Manuela Pensch, Andreas Moritz, Hermann Agis
Additive manufacturing is becoming increasingly important in dentistry for the production of surgical guides. The development of cost-effective desktop stereolithography (SLA) printing systems and the corresponding resins makes this novel technique accessible to dental offices and dental laboratories. The aim of the study was to reveal the response of soft tissue cells to Clear and Dental SG resins used in desktop SLA printing systems at different stages of processing. Cell activity of L929 cells and gingival fibroblasts (GF) in response to the materials was examined in indirect and direct monolayer culture models and a direct spheroid culture model based on MTT, resazurin-based toxicity assays, and live-dead staining...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29184081/allosteric-inhibitor-remotely-modulates-the-conformation-of-the-orthestric-pockets-in-mutant-idh2-r140q
#15
Jiao Chen, Jie Yang, Xianqiang Sun, Zhongming Wang, Xiaolan Cheng, Wuguang Lu, Xueting Cai, Chunping Hu, Xu Shen, Peng Cao
Neomorphic mutation R140Q in the metabolic enzyme isocitrate dehydrogenase 2 (IDH2) is found to be a driver mutation in cancers. Recent studies revealed that allosteric inhibitors could selectively inhibit IDH2/R140Q and induce differentiation of TF-1 erythroleukemia and primary human AML cells. However, the allosteric inhibition mechanism is not very clear. Here, we report the results from computational studies that AGI-6780 binds tightly with the divalent cation binding helices at the homodimer interface and prevents the transition of IDH2/R140Q homodimer to a closed conformation that is required for catalysis, resulting in the decrease of the binding free energy of NADPHs...
November 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29184055/giant-barocaloric-effects-over-a-wide-temperature-range-in-superionic-conductor-agi
#16
Araceli Aznar, Pol Lloveras, Michela Romanini, María Barrio, Josep-Lluís Tamarit, Claudio Cazorla, Daniel Errandonea, Neil D Mathur, Antoni Planes, Xavier Moya, Lluís Mañosa
Current interest in barocaloric effects has been stimulated by the discovery that these pressure-driven thermal changes can be giant near ferroic phase transitions in materials that display magnetic or electrical order. Here we demonstrate giant inverse barocaloric effects in the solid electrolyte AgI, near its superionic phase transition at ~420 K. Over a wide range of temperatures, hydrostatic pressure changes of 2.5 kbar yield large and reversible barocaloric effects, resulting in large values of refrigerant capacity...
November 29, 2017: Nature Communications
https://www.readbyqxmd.com/read/29181977/air-stable-transparent-silver-iodide-copper-iodide-heterojunction-diode
#17
Ji-Hyun Cha, Duk-Young Jung
Transparent AgI-CuI heterojunctions with high rectifying diode behavior were prepared via vapor-phase iodization of metal thin films on transparent conducting oxide substrates. At room temperature, Ag and Cu metal thin films were quickly transformed into the transparent and well-crystallized β-phase of AgI and the γ-phase of CuI, respectively. The AgI and CuI films exhibited n-type and p-type semicon-ductor properties, respectively, with wide band gaps. The heterojunctions were obtained by applying the CuI film to the AgI film in a sequential iodization process...
November 28, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29177778/development-of-an-efficient-viral-aerosol-collector-for-higher-sampling-flow-rate
#18
Xiao-Ting Lin, Nai-Yun Hsu, Jen-Ren Wang, Nai-Tzu Chen, Huey-Jen Su, Ming-Yeng Lin
Viral aerosol infection through cough generates large amounts of viral aerosol and can result in many adverse health effects such as influenza flu and severe acute respiratory syndrome (SARS). To characterize the coughed viral aerosol, the sampler needs to sample at higher flow rate and possess high physical collection efficiency as well as high viral preservation. However, most current inertia-based high flow bioaerosol samplers are not suited for viral aerosol sampling since the viability will be lost doing the sampling process...
November 25, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29151415/-diagnostic-value-of-citrulline-and-intestinal-fatty-acid-binding-protein-on-acute-gastrointestinal-injury-in-critical-patients-a-prospective-study-of-530-patients
#19
Jing Wang, Limei Yu, Yonghong Xia, Yanling Gao, Wenbo Yu, Haihong Sun, Yizhu Sun
OBJECTIVE: To observe the incidence of acute gastrointestinal injury (AGI) in intensive care unit (ICU) patients, and to approach the value of serum citrulline and intestinal fatty acid binding protein (IFABP) on diagnosis of AGI in critical patients. METHODS: A prospective study was conducted. 576 critical patients admitted to ICU of Yantai Yuhuangding Hospital from February 2016 to February 2017 were enrolled. According to the AGI classification proposed by European Society of Intensive Care Medicine (ESICM) in 2012, the AGI and severity of the patients were observed...
November 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29146379/lt-adjuvant-modulates-epitope-specificity-and-improves-the-efficacy-of-murine-antibodies-elicited-by-sublingual-vaccination-with-the-n-terminal-domain-of-streptococcus-mutans-p1
#20
Milene Tavares Batista, Ewerton Lucena Ferreira, Gisela de Souza Pereira, Phillip Stafford, Denicar Lina Nascimento Fabris Maeda, Juliana Falcão Rodrigues, L Jeannine Brady, Stephen Albert Johnston, Luís Carlos de Souza Ferreira, Rita de Cássia Café Ferreira
In this study, we evaluated the immunogenicity, protective efficacy and peptide-based immune signatures of antibodies raised in mice after sublingual immunization with a recombinant form of the P1 (aka AgI/II, PAc) adhesin (P139-512) of Streptococcus mutans, a major etiological agent of dental caries. Sublingual administration of P139-512 in combination with the mucosal adjuvant LTK4R (a derivative of heat-labile LT toxin) induced strong and long-lasting systemic and mucosal immune responses. Incorporation of the adjuvant resulted in an enhancement of the anti-adhesive and anti-colonization activity against S...
November 13, 2017: Vaccine
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