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https://www.readbyqxmd.com/read/28666884/bioinspired-coupled-helical-coils-for-soft-tissue-engineering-of-tubular-structures-improved-mechanical-behavior-of-tubular-collagen-type-i-templates
#1
H P Janke, J Bohlin, R M L M Lomme, S M Mihaila, J Hilborn, W F J Feitz, E Oosterwijk
The design of constructs for tubular tissue engineering is challenging. Most biomaterials need to be reinforced with supporting structures such as knittings, meshes or electrospun material to comply with the mechanical demands of native tissues. In this study, coupled helical coils (CHCs) were manufactured to mimic collagen fiber orientation as found in nature. Monofilaments of different commercially available biodegradable polymers were wound and subsequently fused, resulting in right-handed and left-handed polymer helices fused together in joints where the filaments cross...
June 27, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28661648/graphene-fiber-based-supercapacitors-favor-n-methyl-2-pyrrolidone-ethyl-acetate-as-the-spinning-solvent-coagulant-combination
#2
Nanfei He, Qin Pan, Yixin Liu, Wei Gao
One-dimensional flexible fiber supercapacitors (FSCs) have attracted great interest as promising energy-storage units that can be seamlessly incorporated into textiles via weaving, knitting, or braiding. The major challenges in this field are to develop tougher and more efficient FSCs with a relatively easy and scalable process. Here, we demonstrate a wet-spinning process to produce graphene oxide (GO) fibers from GO dispersions in N-methyl-2-pyrrolidone (NMP), with ethyl acetate as the coagulant. Upon chemical reduction of GO, the resulting NMP-based reduced GO (rGO) fibers (rGO@NMP-Fs) are twice as high in the surface area and toughness but comparable in tensile strength and conductivity as that of the water-based rGO fibers (rGO@H2O-Fs)...
July 14, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28660295/-prostate-gland-what-would-urologists-like-to-know-from-radiologists
#3
REVIEW
U B Liehr, D Baumunk, S Blaschke, F Fischbach, B Friebe, F König, A Lemke, P Mittelstädt, M Pech, M Porsch, J Ricke, D Schindele, S Siedentopf, J J Wendler, M Schostak
A more than 100-year period, where the prostate was only seen and treated as a whole is coming to an end right now. Finally, high resolution imaging is providing deep insights and detailed information so that new therapeutic procedures can aim for the smallest targets within the gland. The long-standing wish of patients for individual noninvasive diagnostics and treatment of prostate diseases can now be fulfilled by providing new tailored concepts; however, in order to transfer the enormous amount of new information into the specific clinical patient situation, a closely knit interdisciplinary approach is required...
June 28, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28659977/facial-mobility-after-maxilla-mandibular-advancement-in-patients-with-severe-obstructive-sleep-apnea-syndrome-a-three-dimensional-study
#4
Laura Verzé, Francesca Antonella Bianchi, Niccolò Barla, Serena Maria Curti, Giovanni Gerbino, Guglielmo Amedeo Ramieri
Introduction. The functional results of surgery in terms of facial mobility are key elements in the treatment of patients. Little is actually known about changes in facial mobility following surgical treatment with maxillomandibular advancement (MMA). Objectives. The three-dimensional (3D) methods study of basic facial movements in typical OSAS patients treated with MMA was the topic of the present research. Materials and Methods. Ten patients affected by severe obstructive sleep apnea syndrome (OSAS) were engaged for the study...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28646907/dimensions-of-social-capital-of-families-with-thalassemia-in-an-indigenous-population-in-tamil-nadu-india-a-qualitative-study
#5
Bharathi Palanisamy, Kalpana Kosalram, Vijayaprasad Gopichandran
BACKGROUND: Studies have shown that social capital is positively associated with health, and the association is context-based. Indigenous populations with poor access to health care largely depend on social capital for their health care needs. This study was conducted to explore the dimensions and types of social capital and its utilization by families with thalassemia for their health and well-being in an indigenous population in Tamil Nadu, India. METHODS: The participants in the study were parents who had children with thalassemia, belonged to an indigenous community in Tamil Nadu, were poor and marginalized, and had poor access to health care...
June 24, 2017: International Journal for Equity in Health
https://www.readbyqxmd.com/read/28642957/superacid-promoted-synthesis-of-highly-porous-hypercrosslinked-polycarbazoles-for-efficient-co2-capture
#6
Xiang Zhu, Shunmin Ding, Carter W Abney, Katie L Browning, Robert L Sacci, Gabriel M Veith, Chengcheng Tian, Sheng Dai
A superacid-promoted "knitting" strategy has been developed for the generation of a novel family of hypercrosslinked nanoporous polycarbazoles for efficient CO2 capture. Using trifluoromethanesulfonic acid, a Brønsted superacid, we demonstrate the facile and rapid synthesis of highly porous polycarbazoles with BET surface areas as high as 1688 m(2) g(-1), and capable of adsorbing 3.5 mmol g(-1) of CO2 at 298 K and 1 bar. This impressive result bestows the material with the highest CO2 uptake capacity for all nanoporous carbazolic polymers and ranks among the best by known porous organic polymers under this condition...
July 4, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28639875/short-form-6d-assessment-in-compression-module-of-the-american-college-of-phlebology-patient-reported-outcome-venous-registry
#7
Yung-Wei Chi, Blythe Durbin-Johnson, Marlin Schul
Objective The goal of this American College of Phlebology Patient Reported Outcome Venous Registry analysis was to examine the clinical efficacy of compression stockings using short-form 6D questionnaire (SF-6D). Method SF-6D scores were modeled over time using linear mixed effects model. Changes of SF-6D score from baseline to the last encounter were examined using a paired t-test. Analysis of variance was used to compare changes from baseline in SF-6D scores between C classifications. All analyses were conducted using SAS software, version 9...
January 1, 2017: Phlebology
https://www.readbyqxmd.com/read/28618328/preparation-of-a-polylactic-acid-knitting-mesh-for-pelvic-floor-repair-and-in-vivo-evaluation
#8
Yao Lu, Shengnan Dong, Peihua Zhang, Xin Liu, Xungai Wang
The health warning report by the Food and Drug Administration (FDA) in 2011 has drawn attention to the need for developing a suitable bio-scaffold for repairing female pelvic from disease. This work prepared a pure polylactic acid knitting mesh (PPA) and compared its structure and properties with a commercial mesh - Surgimesh® Prolapse (SP; Aspide Medical, France). Mechanical tests showed that the PPA mesh was stronger than SP with higher breaking strength and bursting strength. The in vivo property of PPA was evaluated with an animal model...
June 1, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28617250/confinement-of-carbon-nanotube-enabled-multi-strand-helices-of-polyacetylenes
#9
Yunfang Li, Wei-Tao Lu, Hongjin Fu, Xiaolin Zhao, Shuqiong Xu
Molecular dynamics simulations demonstrate that several polyacetylene (PA) chains can encapsulate and self-assemble into multi-stranded helical structures in confined inner space of carbon nanotubes (SWCNT). The driving van der Waals force and curvature provided by tube wall enable polymers to bend and spiral to maximize the π-π stacking area with tube wall when filling inside SWCNT. Structural forms and knitting pattern of multiple helices are influenced by the combined effect of tube space, number of PA chains and temperature...
June 15, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28598983/a-preclinical-evaluation-of-polypropylene-polylacticacid-hybrid-meshes-for-fascial-defect-repair-using-a-rat-abdominal-hernia-model
#10
Daniela Ulrich, Isabelle Le Teuff, Stephanie Huberlant, Patrick Carteron, Vincent Letouzey, Renaud de Tayrac
OBJECTIVES: Synthetic mesh surgery for both abdominal and urogenital hernia repair is often unsatisfactory in the long-term due to postoperative complications. We hypothesized that a semi-degradable mesh hybrid may provide more appropriate biocompatibility with comparable mechanical properties. The aim was to compare its in vivo biocompatibility with a commercial polypropylene (PP) mesh. METHODS: 72 rats were randomly allocated to either our new composite mesh (monofilament PP mesh knitted with polylactic-acid-fibers (PLA)) or to a commercially available PP mesh that was used as a control...
2017: PloS One
https://www.readbyqxmd.com/read/28567031/impact-of-nutrient-restriction-on-the-structure-of-listeria-monocytogenes-biofilm-grown-in-a-microfluidic-system
#11
Tamazight Cherifi, Mario Jacques, Sylvain Quessy, Philippe Fravalo
Biofilm formation by the pathogen Listeria monocytogenes is a major concern in food industries. The aim of this work was to elucidate the effect of nutrient limitation on both biofilm architecture and on the viability of the bacteria in microfluidic growth conditions. Biofilm formation by two L. monocytogenes strains was performed in a rich medium (BHI) and in a 10-fold diluted BHI (BHI/10) at 30°C for 24 h by using both static conditions and the microfluidic system Bioflux. In dynamic conditions, biofilms grown in rich and poor medium showed significant differences as well in structure and in the resulting biovolume...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28559310/disparate-foundations-of-scientists-policy-positions-on-contentious-biomedical-research
#12
Achim Edelmann, James Moody, Ryan Light
What drives scientists' position taking on matters where empirical answers are unavailable or contradictory? We examined the contentious debate on whether to limit experiments involving the creation of potentially pandemic pathogens. Hundreds of scientists, including Nobel laureates, have signed petitions on the debate, providing unique insights into how scientists take a public stand on important scientific policies. Using 19,257 papers published by participants, we reconstructed their collaboration networks and research specializations...
June 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28545003/adaptation-specialization-and-coevolution-within-phytobiomes
#13
REVIEW
David A Baltrus
Growth patterns of individual plants and evolutionary trajectories of plant communities are intimately linked with and are critically affected by host-associated microbiomes. Research across systems has begun to shed light on how these phytobiomes are established under laboratory and natural conditions, and have cultivated hope that a better understanding of the governing principles for host-microbe interactions can guide attempts to engineer microbiomes to boost agricultural yields. One important, yet relatively understudied, parameter in regards to phytobiome membership is the degree to which specialization and coevolution between plant species and microbes provides structure to these communities...
May 22, 2017: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/28518006/cooling-effects-of-wearer-controlled-vaporization-for-extravehicular-activity
#14
Kunihiko Tanaka, Daiki Nagao, Kosuke Okada, Koji Nakamura
INTRODUCTION: The extravehicular activity suit currently used by the United States in space includes a liquid cooling and ventilation garment (LCVG) that controls thermal conditions. Previously, we demonstrated that self-perspiration for evaporative cooling (SPEC) garment effectively lowers skin temperature without raising humidity in the garment. However, the cooling effect is delayed until a sufficient dose of water permeates and evaporates. In the present study, we hypothesized that wearer-controlled vaporization improves the cooling effect...
April 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28502098/-fix-me-another-marguerite-species-delimitation-in-a-group-of-intensively-hybridising-lineages-of-ox-eye-daisies-leucanthemum-mill-compositae-anthemideae
#15
Florian Wagner, Sabine Härtl, Robert Vogt, Christoph Oberprieler
Delineating species boundaries in the framework of the multi-species coalescent (MSC) proves to be a reliable, objective, and reproducible method in an increasing number of studies. However, the underlying model assumes the lack of gene flow after speciation; an assumption which may be frequently violated in plant evolution. The present study evaluates the robustness of currently available species delimitation methods implemented in beast (BFD, BFD*, and dissect) in the closely-knit ox-eye daisy group around Leucanthemum ageratifolium Pau...
May 14, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28499150/effect-of-yarn-structure-on-wicking-and-its-impact-on-bloodstain-pattern-analysis-bpa-on-woven-cotton-fabrics
#16
Xingyu Li, Jingyao Li, Stephen Michielsen
Bloodstain pattern analysis (BPA) of bloodstains on hard, non-porous surfaces has found widespread use in crime scene analysis and reconstruction for violent crimes in which bloodshed occurs. At many violent crime scenes, bloody clothing is also found and may be analyzed. However, to date, there are no definitive methods for analyzing bloodstains on textiles, even for simple drip stains. There are two major classes of textiles used for apparel and household textiles, weaves and knits. In this article, drip stains on two 100% cotton plain weave fabrics representative of bed sheets are analyzed...
April 27, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28496085/-graft-pseudoaneurysm-after-ascending-to-abdominal-aorta-bypass-for-atypical-coarctation-due-to-aortitis-syndrome-report-of-a-case
#17
Masashi Yada, Kazuo Yamanaka, Senri Miwa, Keiichi Hirose, Hisashi Sakaguchi, Yukiyo Yoshida, Youhei Onga, Yuichi Tara
We present a case of a 44-year-old woman, with pseudoaneurysm formation at the middle of the prosthetic graft, 60 mm in diameter. She had been diagnosed with atypical coarctation due to aortitis 27 years before, and had undergone a bypass operation with 14 mm-diameter Cooley double velour graft from the ascending aorta to the abdominal aorta. This time, endovascular aortic repair was performed to prevent rupture of the pseudoaneurysm. Though a knitted Dacron graft has a risk of psuedaneurysm formation long patency could be obtained when used in ascending aorta-abdominal aorta bypass...
May 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28479694/emperipolesis-entosis-and-cell-cannibalism-demystifying-the-cloud
#18
REVIEW
Nidhi Gupta, Kiran Jadhav, Vandana Shah
There are intense published data in literature related to cell engulfment phenomena such as emperipolesis, entosis and cell cannibalism. All these are closely related phenomena with a very fine line of differences. Its correct identification has a significant diagnostic and prognostic value. After extensive literature search, a gap of knowledge was found in concept designing and clarity about understanding of aforementioned terminologies. The authors have attempted to review data of these closely knit terminologies and further organize its characteristic appearances, pathogenetic aspects and prognostic implications...
January 2017: Journal of Oral and Maxillofacial Pathology: JOMFP
https://www.readbyqxmd.com/read/28467217/improving-patient-concordance-in-lymphoedema-management-with-softfit-technology
#19
Dawn Heal
Lymphoedema and chronic oedema patients are cared for by all members of the community nursing team. Without knowledge and understanding of how to improve the condition, nurses feel under immense pressure in caring for their patients. Compression garments are the mainstay of treatment in the 'maintenance phase' (long-term management phase) of lymphoedema and chronic oedema ( Lymphoedema Framework, 2006 ). Choosing the most appropriate garment for the patient, providing adequate compression and controlling the oedema, is challenging...
May 1, 2017: British Journal of Community Nursing
https://www.readbyqxmd.com/read/28435866/layered-microporous-polymers-by-solvent-knitting-method
#20
Shaolei Wang, Chengxin Zhang, Yu Shu, Shulan Jiang, Qi Xia, Linjiang Chen, Shangbin Jin, Irshad Hussain, Andrew I Cooper, Bien Tan
Two-dimensional (2D) nanomaterials, especially 2D organic nanomaterials with unprecedentedly diverse and controlled structure, have attracted decent scientific interest. Among the preparation strategies, the top-down approach is one of the considered low-cost and scalable strategies to obtain 2D organic nanomaterials. However, some factors of their layered counterparts limited the development and potential applications of 2D organic nanomaterials, such as type, stability, and strict synthetic conditions of layered counterparts...
March 2017: Science Advances
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