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https://www.readbyqxmd.com/read/28326629/solvent-controlled-phase-transition-of-a-co-ii-organic-framework-from-achiral-to-chiral-and-two-to-three-dimen-sion
#1
Xing-Po Wang, Wen-Miao Chen, Xiao-Yu Li, Cyril Rajnák, Zhen-Yu Feng, Mohamedally Kurmoo, Roman Boča, Chunjiang Jia, Chen-Ho Tung, Di Sun
We report an unprecedented reversible dynamic transformation in a metal-organic framework involving bond formation that is accompanied by two important structural changes, achiral to chiral and two- to three-dimension. Using two bent organic lig-ands (diimpym = 4,6-di(1H-imidazol-1-yl)pyrimidine; H2npta = 5-nitroisophthalic acid) and CoII(NO3)2*6H2O the coordination pol-ymer Co(diimpym)(npta)*CH3OH, 1*CH3OH, was obtained sol-vothermally. Its structure consisting of knitted pairs of square layers (44-sql) of five-coordinated Co, disordered methanol and crystallizing in achiral Pbca space group at room temperature undergoes a single-crystal to single-crystal (SC-SC) transfor-mation to a 3D interpenetrated framework (pcu) of six-coordinated Co and ordered methanol in chiral P212121 space group below 220 K...
March 21, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28274765/engineering-mechanical-gradients-in-next-generation-biomaterials-lessons-learned-from-medical-textile-design
#2
Joanna L Ng, Ciara E Collins, Melissa L Knothe Tate
Nonwoven and textile membranes have been applied both externally and internally to prescribe boundary conditions for medical conditions as diverse as oedema and tissue defects. Incorporation of mechanical gradients in next generation medical membrane design offers great potential to enhance function in a dynamic, physiological context. Yet the gradient properties and resulting mechanical performance of current membranes are not well described. To bridge this knowledge gap, we tested and compared the mechanical properties of bounding membranes used in both external (compression sleeves for oedema, exercise bands) and internal (surgical membranes) physiological contexts...
March 5, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28269638/intarsia-sensorized-band-and-textrodes-for-real-time-myoelectric-pattern-recognition
#3
Shannon Brown, Max Ortiz-Catalan, Joel Petersson, Kristian Rodby, Fernando Seoane
Surface Electromyography (sEMG) has applications in prosthetics, diagnostics and neuromuscular rehabilitation. Self-adhesive Ag/AgCl are the electrodes preferentially used to capture sEMG in short-term studies, however their long-term application is limited. In this study we designed and evaluated a fully integrated smart textile band with electrical connecting tracks knitted with intarsia techniques and knitted textile electrodes. Real-time myoelectric pattern recognition for motor volition and signal-to-noise ratio (SNR) were used to compare its sensing performance versus the conventional Ag-AgCl electrodes...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269634/investigation-of-changes-in-the-electrical-properties-of-novel-knitted-conductive-textiles-during-cyclic-loading
#4
Cristina Isaia, Donal McNally, Simon A McMaster, David T Branson
Combining stainless steel with polyester fibres adds an attractive conductive behaviour to the yarn. Once knitted in such a manner, fabrics develop sensing properties that make the textiles, also known as e-textiles, suitable for smart/wearable applications. Structural deformations of the fibres (e.g. stretching) will cause changes in the conductivity of the fabric. This work investigates changes in the electrical properties exhibited by four knitted conductive textiles made of 20% stainless steel and 80% polyester fibres during cyclic loading...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28263939/association-between-physician-teamwork-and-health-system-outcomes-after-coronary-artery-bypass-grafting
#5
John M Hollingsworth, Russell J Funk, Spencer A Garrison, Jason Owen-Smith, Samuel A Kaufman, Francis D Pagani, Brahmajee K Nallamothu
BACKGROUND: Patients undergoing coronary artery bypass grafting (CABG) must often see multiple providers dispersed across many care locations. To test whether teamwork (assessed with the bipartite clustering coefficient) among these physicians is a determinant of surgical outcomes, we examined national Medicare data from patients undergoing CABG. METHODS AND RESULTS: Among Medicare beneficiaries who underwent CABG between 2008 and 2011, we mapped relationships between all physicians who treated them during their surgical episodes, including both surgeons and nonsurgeons...
November 2016: Circulation. Cardiovascular Quality and Outcomes
https://www.readbyqxmd.com/read/28249568/by-more-ways-than-one-rapid-convergence-at-hydrothermal-vents-shown-by-3d-anatomical-reconstruction-of-gigantopelta-mollusca-neomphalina
#6
Chong Chen, Katsuyuki Uematsu, Katrin Linse, Julia D Sigwart
BACKGROUND: Extreme environments prompt the evolution of characteristic adaptations. Yet questions remain about whether radiations in extreme environments originate from a single lineage that masters a key adaptive pathway, or if the same features can arise in parallel through convergence. Species endemic to deep-sea hydrothermal vents must accommodate high temperature and low pH. The most successful vent species share a constrained pathway to successful energy exploitation: hosting symbionts...
March 1, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28249126/massive-incisional-hernia-repair-with-parietex-monocentric-analysis-on-500-cases-treated-with-a-laparoscopic-approach
#7
Francesco Caruso, Francesca Ciccarese, Giovanni Cesana, Matteo Uccelli, Giorgio Castello, Stefano Olmi
PURPOSE: The aim of this retrospective study is to demonstrate the safety and feasibility of the laparoscopic technique for treatment of massive incisional hernias (MIHs) and to compare three different fixation devices. METHODS: From January 1, 2001, to December 31, 2014, we collected retrospective data from patients with large incisional hernias (IHs). Laparoscopic IH repair is performed by applying a three-dimensional polyester knit structure mesh with a resorbable collagen barrier on peritoneal side (Parietex™ Composite Mesh; Covidien, New Haven, CT)...
March 1, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/28237009/a-new-method-of-ergonomic-testing-of-gloves-protecting-against-cuts-and-stabs-during-knife-use
#8
Emilia Irzmańska, Tomasz Tokarski
The paper presents a new method of ergonomic evaluation of gloves protecting against cuts and stabs during knife use, consisting of five manual dexterity tests. Two of them were selected based on the available literature and relevant safety standards, and three were developed by the authors. All of the tests were designed to simulate occupational tasks associated with meat processing as performed by the gloved hand in actual workplaces. The tests involved the three most common types of protective gloves (knitted gloves made of a coverspun yarn, metal mesh gloves, and metal mesh gloves with an ergonomic polyurethane tightener) and were conducted on a group of 20 males...
May 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28227896/intarsia-sensorized-band-and-textrodes-for-real-time-myoelectric-pattern-recognition
#9
Shannon Brown, Max Ortiz-Catalan, Joel Petersson, Kristian Rodby, Fernando Seoane, Shannon Brown, Max Ortiz-Catalan, Joel Petersson, Kristian Rodby, Fernando Seoane, Max Ortiz-Catalan, Fernando Seoane, Kristian Rodby, Shannon Brown, Joel Petersson
Surface Electromyography (sEMG) has applications in prosthetics, diagnostics and neuromuscular rehabilitation. Self-adhesive Ag/AgCl are the electrodes preferentially used to capture sEMG in short-term studies, however their long-term application is limited. In this study we designed and evaluated a fully integrated smart textile band with electrical connecting tracks knitted with intarsia techniques and knitted textile electrodes. Real-time myoelectric pattern recognition for motor volition and signal-to-noise ratio (SNR) were used to compare its sensing performance versus the conventional Ag-AgCl electrodes...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227892/investigation-of-changes-in-the-electrical-properties-of-novel-knitted-conductive-textiles-during-cyclic-loading
#10
Cristina Isaia, Donal McNally, Simon A McMaster, David T Branson, Cristina Isaia, Donal McNally, Simon A McMaster, David T Branson, Simon A McMaster, Donal McNally, Cristina Isaia, David T Branson
Combining stainless steel with polyester fibres adds an attractive conductive behaviour to the yarn. Once knitted in such a manner, fabrics develop sensing properties that make the textiles, also known as e-textiles, suitable for smart/wearable applications. Structural deformations of the fibres (e.g. stretching) will cause changes in the conductivity of the fabric. This work investigates changes in the electrical properties exhibited by four knitted conductive textiles made of 20% stainless steel and 80% polyester fibres during cyclic loading...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28221765/design-of-macroscopically-ordered-liquid-crystalline-hydrogel-columns-knitted-with-nanosilver-for-topical-applications
#11
Reshma Lali Raveendran, Nishanth Kumar Sasidharan, Sudha J Devaki
The design of liquid crystalline hydrogels knitted with silver nanoparticles in macroscopic ordering is becoming a subject of research interest due to their promising multifunctional applications in biomedical and optoelectronic applications. The present work describes the development of liquid crystalline Schiff-based hydrogel decorated with silver nanoparticles and the demonstration of its antifungal applications. Schiff base was prepared from polyglucanaldehyde and chitosan, and the former was prepared by the oxidation of amylose (polyglucopyranose) isolated from abundantly available unutilized jackfruit seed starch...
March 1, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28216296/cyclodextrin-modified-plla-parietal-reinforcement-implant-with-prolonged-antibacterial-activity
#12
G Vermet, S Degoutin, F Chai, M Maton, C Flores, C Neut, P E Danjou, B Martel, N Blanchemain
The use of textile meshes in hernia repair is widespread in visceral surgery. Though, mesh infection is a complication that may prolong the patient recovery period and consequently presents an impact on public health economy. Such concern can be avoided thanks to a local and extended antibiotic release on the operative site. In recent developments, poly-L-lactic acid (PLLA) has been used in complement of polyethyleneterephthalate (Dacron(®)) (PET) or polypropylene (PP) yarns in the manufacture of semi-resorbable parietal implants...
February 12, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28215532/consequences-of-keratin-phosphorylation-for-cytoskeletal-organization-and-epithelial-functions
#13
M S Sawant, R E Leube
Intermediate filaments are major phosphoproteins. The complex patterns of intermediate filament phosphorylation make up a poorly understood code reflecting cytoskeletal properties and cellular function through an intense crosstalk with multiple signaling pathways. This review focuses on the epithelial keratin intermediate filaments highlighting the tight-knit relationship of keratin phosphorylation and network organization during cell division and apoptosis, and the importance of keratin phosphorylation during epithelial stress responses...
2017: International Review of Cell and Molecular Biology
https://www.readbyqxmd.com/read/28181554/analysis-of-influenza-and-rsv-dynamics-in-the-community-using-a-local-transmission-zone-approach
#14
Gal Almogy, Lewi Stone, B Andrei Bernevig, Dana G Wolf, Marina Dorozko, Allon E Moses, Ran Nir-Paz
Understanding the dynamics of pathogen spread within urban areas is critical for the effective prevention and containment of communicable diseases. At these relatively small geographic scales, short-distance interactions and tightly knit sub-networks dominate the dynamics of pathogen transmission; yet, the effective boundaries of these micro-scale groups are generally not known and often ignored. Using clinical test results from hospital admitted patients we analyze the spatio-temporal distribution of Influenza Like Illness (ILI) in the city of Jerusalem over a period of three winter seasons...
February 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28165168/blooming-knit-flowers-loop-linked-soft-morphing-structures-for-soft-robotics
#15
Min-Woo Han, Sung-Hoon Ahn
A loop-linked structure, which is capable of morphing in various modes, including volumetric transformation, is developed based on knitting methods. Morphing flowers (a lily-like, a daffodil-like, gamopetalous, and a calla-like flower) are fabricated using loop patterning, and their blooming motion is demonstrated by controlling a current that selectively actuates the flowers petals.
February 6, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28161684/silk-based-anisotropical-3d-biotextiles-for-bone-regeneration
#16
Viviana P Ribeiro, Joana Silva-Correia, Ana I Nascimento, Alain da Silva Morais, Alexandra P Marques, Ana S Ribeiro, Carla J Silva, Graça Bonifácio, Rui A Sousa, Joaquim M Oliveira, Ana L Oliveira, Rui L Reis
Bone loss in the craniofacial complex can been treated using several conventional therapeutic strategies that face many obstacles and limitations. In this work, novel three-dimensional (3D) biotextile architectures were developed as a possible strategy for flat bone regeneration applications. As a fully automated processing route, this strategy as potential to be easily industrialized. Silk fibroin (SF) yarns were processed into weft-knitted fabrics spaced by a monofilament of polyethylene terephthalate (PET)...
January 26, 2017: Biomaterials
https://www.readbyqxmd.com/read/28154746/bone-ingrowth-to-ti-fibre-knit-block-with-high-deformability
#17
Yoko Henmi, Yoshihito Naito, Ryo Jimbo, Yohei Jinno, Kazumitsu Sekine, Kenichi Hamada
OBJECTIVES: The objective of this study is to develop a Ti fibre knit block without sintering, and to evaluate its deformability and new bone formation in vivo. MATERIAL AND METHODS: A Ti fibre with a diameter of 150 μm was knitted to fabricate a Ti mesh tube. The mesh tube was compressed in a metal mould to fabricate porous Ti fibre knit blocks with three different porosities of 88%, 69%, and 50%. The elastic modulus and deformability were evaluated using a compression test...
October 2016: Journal of Oral & Maxillofacial Research
https://www.readbyqxmd.com/read/28145041/first-in-human-experience-of-a-new-self-expandable-percutaneous-pulmonary-valve-implantation-using-knitted-nitinol-wire-and-tri-leaflet-porcine-pericardial-valve-in-the-native-right-ventricular-outflow-tract
#18
Gi Beom Kim, Bo Sang Kwon, Hong Gook Lim
Balloon-expandable percutaneous pulmonary valve systems using the Melody and Edwards SAPIEN transcatheter heart valves have been increasingly used instead of surgically implantable pulmonary valves. However, limited patients with right ventricular outflow tract (RVOT) lesions are suitable candidates for percutaneous pulmonary valve implantation (PPVI) using these systems after surgical correction of tetralogy of Fallot. Therefore, larger self-expandable valved-stents are being developed for native RVOT lesions...
February 1, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28138542/knitting-and-weaving-artificial-muscles
#19
Ali Maziz, Alessandro Concas, Alexandre Khaldi, Jonas Stålhand, Nils-Krister Persson, Edwin W H Jager
A need exists for artificial muscles that are silent, soft, and compliant, with performance characteristics similar to those of skeletal muscle, enabling natural interaction of assistive devices with humans. By combining one of humankind's oldest technologies, textile processing, with electroactive polymers, we demonstrate here the feasibility of wearable, soft artificial muscles made by weaving and knitting, with tunable force and strain. These textile actuators were produced from cellulose yarns assembled into fabrics and coated with conducting polymers using a metal-free deposition...
January 2017: Science Advances
https://www.readbyqxmd.com/read/28138014/loose-knit-family-tracing-the-evolution-of-actin-depolymerizing-factors-that-sever-or-join-the-actin-cytoskeleton
#20
EDITORIAL
Jennifer Lockhart
No abstract text is available yet for this article.
February 2017: Plant Cell
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