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https://www.readbyqxmd.com/read/28218856/influence-of-hydrogen-bonding-on-the-kinetic-stability-of-vapor-deposited-glasses-of-triazine-derivatives
#1
Audrey Laventure, Ankit Gujral, Olivier Lebel, Christian Pellerin, Mark D Ediger
It has recently been established that physical vapor deposition (PVD) can produce organic glasses with enhanced kinetic stability, high density, and anisotropic packing, with the substrate temperature during deposition (Tsubstrate) as the key control parameter. The influence of hydrogen bonding on the formation of PVD glasses has not been fully explored. Herein, we use a high-throughput preparation method to vapor-deposit three triazine derivatives over a wide range of Tsubstrate, from 0.69 to 1.08Tg, where Tg is the glass transition temperature...
February 20, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28207607/pars-plana-vitrectomy-and-lensectomy-for-ectopia-lentis-with-and-without-the-induction-of-a-posterior-vitreous-detachment
#2
Mandeep S Singh, Edward J Casswell, Stavroula Boukouvala, Petros Petrou, David G Charteris
PURPOSE: Posterior hyaloid removal during pars plana vitrectomy and lensectomy for ectopia lentis is commonly performed, but may increase the risk of intraoperative retinal breaks and postoperative retinal detachment. This study evaluated outcomes after pars plana vitrectomy and lensectomy with or without posterior hyaloid removal. METHODS: This retrospective observational cohort study included ectopia lentis cases that underwent pars plana vitrectomy and lensectomy (2005-2014), with or without intraoperative induction of a posterior vitreous detachment (PVD)...
February 15, 2017: Retina
https://www.readbyqxmd.com/read/28194186/safety-and-effectiveness-of-bone-marrow-cell-concentrate-in-the-treatment-of-chronic-critical-limb-ischemia-utilizing-a-rapid-point-of-care-system
#3
Venkatesh Ponemone, Saniya Gupta, Dalip Sethi, Manish Suthar, Monika Sharma, Richard J Powell, Kenneth Lee Harris, Nungshi Jungla, Priyadarshini Arambam, Upendra Kaul, Ashok Seth, Suhail Bukhari
Critical limb ischemia (CLI) is the end stage of lower extremity peripheral vascular disease (PVD) in which severe obstruction of blood flow results in ischemic rest pain, ulcers and/or gangrene, and a significant risk of limb loss. This open-label, single-arm feasibility study evaluated the safety and therapeutic effectiveness of autologous bone marrow cell (aBMC) concentrate in revascularization of CLI patients utilizing a rapid point-of-care device. Seventeen (17) no-option CLI patients with ischemic rest pain were enrolled in the study...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28178836/nematic-like-stable-glasses-without-equilibrium-liquid-crystal-phases
#4
Jaritza Gómez, Ankit Gujral, Chengbin Huang, Camille Bishop, Lian Yu, M D Ediger
We report the thermal and structural properties of glasses of posaconazole, a rod-like molecule, prepared using physical vapor deposition (PVD). PVD glasses of posaconazole can show substantial molecular orientation depending upon the choice of substrate temperature, Tsubstrate, during deposition. Ellipsometry and IR measurements indicate that glasses prepared at Tsubstrate very near the glass transition temperature (Tg) are highly ordered. For these posaconazole glasses, the orientation order parameter is similar to that observed in macroscopically aligned nematic liquid crystals, indicating that the molecules are mostly parallel to one another and perpendicular to the interface...
February 7, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28178074/a-common-pro-nociceptive-pain-modulation-profile-typifying-subgroups-of-chronic-pelvic-pain-syndromes-is-interrelated-with-enhanced-clinical-pain
#5
Grinberg Keren, Granot Michal, Lowenstein Lior, Abramov Liora, Weissman-Fogel Irit
Provoked vestibulodynia (PVD) and painful bladder syndrome (PBS), subgroups of chronic pelvic pain syndromes (CPPS), are considered to share common bio-physiological peripheral mechanisms. In addition, indications of a pro-nociceptive pain profile co-existing with psychological vulnerability suggests common dysfunctional pain processing and pain modulation in these two subgroups of CPPS. We therefore aimed at comparing the pain profile and psychological traits of PVD and PBS patients to see whether the pain profile contributes to inter-subject variability of clinical pain symptoms...
February 7, 2017: Pain
https://www.readbyqxmd.com/read/28145543/synergizing-the-multiple-plasmon-resonance-coupling-and-quantum-effects-to-obtain-enhanced-sers-and-pec-performance-simultaneously-on-a-noble-metal-semiconductor-substrate
#6
Tao Yang, Wenna Liu, Lidong Li, Junhong Chen, Xinmei Hou, Kuo-Chih Chou
Aiming to achieve the synergistic enhancement of the surface-enhanced Raman scattering (SERS) and photoelectrocatalytic (PEC) performance on a noble metal-semiconductor, such as Au nanoparticles (NPs)-TiO2 nanotube arrays (TiO2 NTAs@hybrid Au NPs), theoretical calculation and experiments are performed. Theoretical calculation indicates that both the SERS and PEC performance can be enhanced by coupling different sized Au NPs on TiO2 NTAs based on synergizing the multiple plasmon resonance coupling and quantum effects...
February 1, 2017: Nanoscale
https://www.readbyqxmd.com/read/28118257/provoked-vestibulodynia-a-comparative-examination-of-mental-health-sleep-sexual-functioning-and-relationship-adjustment
#7
Emma Dargie, Ian Gilron, Caroline Pukall
OBJECTIVES: Provoked vestibulodynia (PVD) is an idiopathic vulvar pain condition characterized by burning pain at the vaginal opening in response to contact or pressure. Previous research has established some of the psychosocial difficulties experienced by these patients, but direct comparisons with other pain conditions are needed. The purpose of this study was to compare women with PVD to those with post-herpetic neuralgia and pain-free control participants. METHODS: Participants were invited to complete an anonymous online survey consisting of sociodemographic questions and a range of validated measures...
January 21, 2017: Clinical Journal of Pain
https://www.readbyqxmd.com/read/28114319/reduced-insulin-insulin-like-growth-factor-receptor-signaling-mitigates-defective-dendrite-morphogenesis-in-mutants-of-the-er-stress-sensor-ire-1
#8
Yehuda Salzberg, Andrew J Coleman, Kevin Celestrin, Moran Cohen-Berkman, Thomas Biederer, Sivan Henis-Korenblit, Hannes E Bülow
Neurons receive excitatory or sensory inputs through their dendrites, which often branch extensively to form unique neuron-specific structures. How neurons regulate the formation of their particular arbor is only partially understood. In genetic screens using the multidendritic arbor of PVD somatosensory neurons in the nematode Caenorhabditis elegans, we identified a mutation in the ER stress sensor IRE-1/Ire1 (inositol requiring enzyme 1) as crucial for proper PVD dendrite arborization in vivo. We further found that regulation of dendrite growth in cultured rat hippocampal neurons depends on Ire1 function, showing an evolutionarily conserved role for IRE-1/Ire1 in dendrite patterning...
January 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28102404/large-scale-2d-pbi2-monolayers-experimental-realization-and-their-indirect-band-gap-related-properties
#9
Mianzeng Zhong, Shuai Zhang, Le Huang, Jingbi You, Zhongming Wei, Xinfeng Liu, Jingbo Li
Large-scale PbI2 monolayers and few layers with high crystallinity and a uniform hexagonal shape were synthesized via a facile physical vapour deposition (PVD) method. The transition from a direct band-gap in the bulk to an indirect band-gap in the monolayer is verified by photoluminescence (PL) spectra, optoelectronic properties, and first principle calculations.
January 19, 2017: Nanoscale
https://www.readbyqxmd.com/read/28098728/peripapillary-retinal-nerve-fiber-thickness-changes-after-vitrectomy-for-epiretinal-membrane-in-eyes-with-and-without-vitreous-detachment
#10
Cesare Mariotti, Michele Nicolai, Antonio Longo, Francesca Viti, Elisa Bambini, Andrea Saitta, Vittorio Pirani, Emanuele Orsini, Daniela Baruffa, Michele Reibaldi
PURPOSE: To compare the changes in postoperative peripapillary retinal nerve fiber layer (p-RNFL) thickness after vitrectomy for epiretinal membrane in eyes with preexisting posterior vitreous detachment (PVD) and eyes with surgically induced PVD. METHODS: This study included consecutive patients who underwent 25-gauge vitrectomy for epiretinal membrane. Eyes were divided, according to intraoperative PVD status, into a preexisting PVD group and surgically induced PVD group...
January 16, 2017: Retina
https://www.readbyqxmd.com/read/28098098/a-study-of-clinical-assessment-of-frailty-in-patients-on-maintenance-hemodialysis-supported-by-cashless-government-scheme
#11
Manjusha Yadla, Jyothi Priyadarshini John, Mahesh Mummadi
This is a prospective cohort study to assess the prevalence of frailty in patients undergoing maintenance hemodialysis (HD) under the government-funded scheme at our center and to assess the relationship between frailty and falls, hospitalizations, and mortality. This was done at our center which is completely supported by the government, which provides HD to all the patients under poverty line. Epidemiological data, anthropometric measurements, comorbidities assessment, frailty assessment using Fried criteria, subsequent hospitalizations, falls, and mortality were recorded in our prevalent dialysis population at our center between October 2014 and October 2015...
January 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28057646/incidence-mechanism-and-outcomes-of-schisis-retinal-detachments-revealed-through-a-prospective-population-based-study
#12
Kanmin Xue, Mahiul M K Muqit, Eric Ezra, Stephen J Charles, David Yorston, Arijit Mitra, Chetan K Patel
AIM: To determine the incidence, presentation and outcomes of progressive sight-threatening retinal detachment (RD) complicating degenerative retinoschisis. METHODS: We conducted the first prospective population-based epidemiological study of progressive schisis detachment over a 1-year period (2014-2015) in the UK. Case ascertainment was via monthly British Ophthalmological Surveillance Unit reporting cards sent to all ophthalmologists in the UK. For each reported case, data were collected using incident and 6 months follow-up questionnaires gathering information including demographic, presenting symptoms, retinal findings, primary management, primary outcome, secondary management and secondary outcome...
January 5, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28043367/effectiveness-of-intrauterine-treatment-with-cephapirin-in-dairy-cows-with-purulent-vaginal-discharge
#13
N Tison, E Bouchard, L DesCôteaux, R C Lefebvre
The objective of this study was to assess the efficacy of cephapirin intrauterine treatment preceding a timed artificial insemination protocol in lactating dairy cows with purulent vaginal discharges (PVDs). Holstein dairy cows (n = 1247) from 18 herds were enrolled in a controlled randomized clinical trial. At 34 days in milk (DIM; ±7 days), cows had a genital examination (transrectal palpation, vaginoscopy, and uterine bacteriology). They were randomly assigned to either the control group (CONT, no treatment) or the treatment group (CEPH) consisting of 1 intrauterine infusion of 500-mg cephapirin benzathine (RCL) (Metricure, Merck Animal Health, Montreal, Canada) regardless of the uterine health status...
February 2017: Theriogenology
https://www.readbyqxmd.com/read/28028667/interpersonal-goals-and-well-being-in-couples-coping-with-genito-pelvic-pain
#14
Natalie O Rosen, Marieke Dewitte, Kathleen Merwin, Sophie Bergeron
In the context of genito-pelvic pain, consideration of interpersonal goals is particularly relevant given that couples' distress is often predicated upon the relational setting. However, relationship goals have not been examined in this population. We investigated (1) the associations between relationship goals and women's pain during intercourse as well as the sexual, relational, and psychological well-being of women with provoked vestibulodynia (PVD) and their partners and (2) the moderating role of sexual goals in these associations...
December 27, 2016: Archives of Sexual Behavior
https://www.readbyqxmd.com/read/28025570/optical-gas-sensing-of-ammonia-and-amines-based-on-protonated-porphyrin-tio%C3%A2-composite-thin-films
#15
Pedro Castillero, Javier Roales, Tânia Lopes-Costa, Juan R Sánchez-Valencia, Angel Barranco, Agustín R González-Elipe, José M Pedrosa
Open porous and transparent microcolumnar structures of TiO₂ prepared by physical vapour deposition in glancing angle configuration (GLAD-PVD) have been used as host matrices for two different fluorescent cationic porphyrins, 5-(N-methyl 4-pyridyl)-10,15,20-triphenyl porphine chloride (MMPyP) and meso-tetra (N-methyl 4-pyridyl) porphine tetrachloride (TMPyP). The porphyrins have been anchored by electrostatic interactions to the microcolumns by self-assembly through the dip-coating method. These porphyrin/TiO₂ composites have been used as gas sensors for ammonia and amines through previous protonation of the porphyrin with HCl followed by subsequent exposure to the basic analyte...
December 23, 2016: Sensors
https://www.readbyqxmd.com/read/28012050/comparative-assessment-of-plaque-media-change-on-three-modalities-of-ivus-immediately-after-implantation-of-either-everolimus-eluting-bioresorbable-vascular-scaffold-or-everolimus-eluting-metallic-stent-in-absorb-ii-study
#16
Yaping Zeng, Rafael Cavalcante, Erhan Tenekecioglu, Pannipa Suwannasom, Yohei Sotomi, Carlos Collet, Mahammad Abdelghani, Hans Jonker, Franck Digne, Dieter Horstkotte, Manfred Zehender, Ciro Indolfi, Francesco Saia, Rosario Fiorilli, Bernard Chevalier, Leonardo Bolognese, Javier Goicolea, Shaoping Nie, Yoshinobu Onuma, Patrick W Serruys
The purpose of the study to assess the comparability of immediate changes in plaque/media volume (PV) on three modalities of intravascular ultrasound (IVUS) after implantation of either bioresorbable vascular scaffold (BVS) or everolimus-eluting metallic stent (EES) in Absorb II Study. The two devices have different device volume and ultrasound backscattering that may interfere with the "plaque/media" assessed by three modalities on IVUS: grayscale, backscattering of radiofrequency and brightness function. In a multicenter randomized controlled trial, 501 patients with stable or unstable angina underwent documentary IVUS pre- and post- implantation...
December 23, 2016: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/27990367/missed-retinal-breaks-in-rhegmatogenous-retinal-detachment
#17
Brijesh Takkar, Shorya Azad, Adarsh Shashni, Amar Pujari, Indrish Bhatia, Rajvardhan Azad
AIM: To evaluate the causes and associations of missed retinal breaks (MRBs) and posterior vitreous detachment (PVD) in patients with rhegmatogenous retinal detachment (RRD). METHODS: Case sheets of patients undergoing vitreo retinal surgery for RRD at a tertiary eye care centre were evaluated retrospectively. Out of the 378 records screened, 253 were included for analysis of MRBs and 191 patients were included for analysis of PVD, depending on the inclusion criteria...
2016: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/27984756/non-reconstructable-peripheral-vascular-disease-of-the-lower-extremity-in-ten-patients-treated-with-adipose-derived-stromal-vascular-fraction-cells
#18
Michael H Carstens, Arturo Gómez, Ronald Cortés, Elizabeth Turner, Cecilia Pérez, Marlon Ocon, Diego Correa
We present a series of ten patients with non-reconstructable peripheral vascular disease (PVD), secondary to arteriosclerosis (AS) and/or diabetes mellitus (DM), treated with local injection of non-expanded autologous, adipose-derived stromal vascular fraction (SVF) cells for the purposes of enhancing neovascularization and chronic wound healing. Adipose tissue was surgically harvested and processed to yield the heterogeneous SVF cells for immediate point-of-care injection. The gastrocnemius muscles and ulcers or wounds where present were locally injected with the resulting SVF...
January 2017: Stem Cell Research
https://www.readbyqxmd.com/read/27966880/enhanced-photocatalytic-performance-depending-on-morphology-of-bismuth-vanadate-thin-film-synthesized-by-pulsed-laser-deposition
#19
Sang Yun Jeong, Kyoung Soon Choi, Hye-Min Shin, Taemin Ludvic Kim, Jaesun Song, Sejun Yoon, Ho Won Jang, Myung-Han Yoon, Cheolho Jeon, Jouhahn Lee, Sanghan Lee
We have fabricated high quality bismuth vanadate (BiVO4) polycrystalline thin films as photoanodes by pulsed laser deposition (PLD) without a postannealing process. The structure of the grown films is the photocatalytically active phase of scheelite-monoclinic BiVO4 which was obtained by X-ray diffraction (XRD) analysis. The change of surface morphology for the BIVO4 thin films depending on growth temperature during synthesis has been observed by scanning electron microscopy (SEM), and its influence on water splitting performance was investigated...
December 22, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27966831/prevalence-of-posterior-vitreous-detachment-in-glaucoma-patients-and-controls
#20
Christoph Schwab, Wilfried Glatz, Bernd Schmidt, Ewald Lindner, Karl Oettl, Regina Riedl, Andreas Wedrich, Domagoj Ivastinovic, Michaela Velikay-Parel, Georg Mossboeck
PURPOSE: To evaluate the impact of oxidative stress - present in glaucoma - on the vitreous. We therefore compare the presence of early and late stages of posterior vitreous detachment (PVD) between patients with glaucoma and controls. METHODS: The vitreous state was evaluated by the combination of optical coherence tomography and ultrasound. The main outcome was the vitreous state classified into 'no PVD', 'initial PVD' and 'advanced PVD'. RESULTS: We evaluated the vitreous state in 48 patients with glaucoma (age: mean 66...
December 14, 2016: Acta Ophthalmologica
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