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https://www.readbyqxmd.com/read/29036173/pre-treatment-with-gnrha-or-ulipristal-acetate-prior-to-laparoscopic-and-laparotomic-myomectomy-a-systematic-review-and-meta-analysis
#1
Inge de Milliano, Moniek Twisk, Johannes C Ket, Judith A Huirne, Wouter J Hehenkamp
BACKGROUND: Myomectomy has potential risks of complications. To reduce these risks, medical pre-treatment can be applied to reduce fibroid size and thereby potentially decrease intra-operative blood loss, the need for blood transfusion and emergency hysterectomy. The aim of this systematic review and meta-analysis is to study the effectiveness of medical pre-treatment with Gonadotropin-releasing hormone agonists (GnRHa) or ulipristal acetate prior to laparoscopic or laparotomic myomectomy on intra-operative and post-operative outcomes...
2017: PloS One
https://www.readbyqxmd.com/read/29024321/post-graphene-2d-chemistry-the-emerging-field-of-molybdenum-disulfide-and-black-phosphorus-functionalization
#2
Andreas Hirsch, Frank Hauke
The current state of the chemical functionalization of three types of single sheet 2D materials, namely, graphene, molybdenum disulfide (MoS2), and black phosphorus (BP) is summarized. Such 2D sheet polymers represent currently an emerging field at the interface of synthetic chemistry, physics, and materials science. Both covalent and non-covalent functionalization of sheet architectures allows for a systematic modification of their properties, i.e. an improvement of solubility and processability, the prevention of re-aggregation or a band gap tuning...
October 10, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/29016739/association-between-severity-of-hypodontia-and-cephalometric-skeletal-patterns-a-retrospective-study
#3
Waleed Taju, Martyn Sherriff, Dirk Bister, Sophia Shah
Objective: To assess if severity of hypodontia is related to a specific skeletal pattern. Study design: Lateral cephalometric radiographs and dental panoramic tomographs of 182 hypodontia patients were analysed. The severity of hypodontia was recorded and the sample was divided into groups with mild (n = 71), moderate (n = 56) and severe (n = 55) hypodontia. According to ethnicity, the sample was further subdivided into White Caucasians, African-British, and Arabian/Indian subgroups...
July 11, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28982563/the-international-multicenter-trivalve%C3%A2-registry-which-patients-are-undergoing-transcatheter-tricuspid-repair
#4
Maurizio Taramasso, Rebecca T Hahn, Hannes Alessandrini, Azeem Latib, Adrian Attinger-Toller, Daniel Braun, Eric Brochet, Kim A Connelly, Paolo Denti, Florian Deuschl, Andrea Englmaier, Neil Fam, Christian Frerker, Joerg Hausleiter, Jean-Michel Juliard, Ryan Kaple, Felix Kreidel, Karl Heinz Kuck, Shingo Kuwata, Marco Ancona, Margarita Malasa, Tamim Nazif, Georg Nickenig, Fabian Nietlispach, Alberto Pozzoli, Ulrich Schäfer, Joachim Schofer, Robert Schueler, Gilbert Tang, Alec Vahanian, John G Webb, Ermela Yzeiraj, Francesco Maisano, Martin B Leon
OBJECTIVES: This study sought to develop a large, international registry to evaluate the diffusion of these approaches and investigate patient characteristics and initial clinical results. BACKGROUND: Several transcatheter tricuspid valve therapies are emerging as therapeutic options for patients with severe symptomatic tricuspid regurgitation (TR), generally a high-risk surgical population. METHODS: The TriValve (Transcatheter Tricuspid Valve Therapies) registry included 106 high-risk patients (76 ± 9 years of age; 60...
October 9, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28975034/the-periosteal-requirement-and-temporal-dynamics-of-bmp2-induced-middle-phalanx-regeneration-in-the-adult-mouse
#5
Lindsay A Dawson, Ling Yu, Mingquan Yan, Luis Marrero, Paula P Schanes, Connor Dolan, Maegan Pela, Britta Petersen, Manjong Han, Ken Muneoka
Regeneration of mammalian limbs is restricted to amputation of the distal digit tip, the terminal phalanx (P3). The adjacent skeletal element, the middle phalanx (P2), has emerged as a model system to investigate regenerative failure and as a site to test approaches aimed at enhancing regeneration. We report that exogenous application of bone morphogenetic protein 2 (BMP2) stimulates the formation of a transient cartilaginous callus distal to the amputation plane that mediates the regeneration of the amputated P2 bone...
June 2017: Regeneration
https://www.readbyqxmd.com/read/28957221/using-back-focal-plane-interferometry-to-probe-the-influence-of-zernike-aberrations-in-optical-tweezers
#6
Thomas F Dixon, Lachlan W Russell, Ana Andres-Arroyo, Peter J Reece
We experimentally investigate the influence of geometric aberrations in optical tweezers using back focal plane interferometry. We found that the introduction of coma aberrations causes significant modification to the Brownian motion of the trapped particle, producing an apparent cross-coupling between the in-plane aberrated axis and the weaker propagation axis. This coupling is evidenced by the emergence of a second dominant low frequency Lorentzian feature in the position power spectral density. The effect on Brownian motion was confirmed using a secondary unaberrated probe beam, ruling out the possibility of systematic optical effects related to the detection system...
August 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28951719/human-derived-disturbance-estimation-and-compensation-dec-method-lends-itself-to-a-modular-sensorimotor-control-in-a-humanoid-robot
#7
Vittorio Lippi, Thomas Mergner
The high complexity of the human posture and movement control system represents challenges for diagnosis, therapy, and rehabilitation of neurological patients. We envisage that engineering-inspired, model-based approaches will help to deal with the high complexity of the human posture control system. Since the methods of system identification and parameter estimation are limited to systems with only a few DoF, our laboratory proposes a heuristic approach that step-by-step increases complexity when creating a hypothetical human-derived control systems in humanoid robots...
2017: Frontiers in Neurorobotics
https://www.readbyqxmd.com/read/28951545/graphene-based-synthetic-antiferromagnets-and-ferrimagnets
#8
P Gargiani, R Cuadrado, H B Vasili, M Pruneda, M Valvidares
Graphene-spaced magnetic systems with antiferromagnetic exchange-coupling offer exciting opportunities for emerging technologies. Unfortunately, the in-plane graphene-mediated exchange-coupling found so far is not appropriate for realistic exploitation, due to being weak, being of complex nature, or requiring low temperatures. Here we establish that ultra-thin Fe/graphene/Co films grown on Ir(111) exhibit robust perpendicular antiferromagnetic exchange-coupling, and gather a collection of magnetic properties well-suited for applications...
September 26, 2017: Nature Communications
https://www.readbyqxmd.com/read/28945439/centimeter-scale-2d-van-der-waals-vertical-heterostructures-integrated-on-deformable-substrates-enabled-by-gold-sacrificial-layer-assisted-growth
#9
Md Ashraful Islam, Jung Han Kim, Anthony Schropp, Hirokjyoti Kalita, Nitin Choudhary, Dylan Weitzman, Saiful I Khondaker, Kyu Hwan Oh, Tania Roy, Hee-Suk Chung, Yeonwoong Jung
Two-dimensional (2D) transition metal dichalcogenides (TMDs) such as molybdenum or tungsten disulfides (MoS2 or WS2) exhibit extremely large in-plane strain limits and unusual optical/electrical properties, offering unprecedented opportunities for flexible electronics/optoelectronics in new form factors. In order for them to be technologically viable building-blocks for such emerging technologies, it is critically demanded to grow/integrate them onto flexible or arbitrary-shaped substrates on a large wafer-scale compatible with the prevailing microelectronics processes...
October 11, 2017: Nano Letters
https://www.readbyqxmd.com/read/28932697/thoracic-wall-trauma-misdiagnosed-lesions-on-radiographs-and-usefulness-of-ultrasound-multidetector-computed-tomography-and-magnetic-resonance-imaging
#10
REVIEW
Xavier Tomas, Catherine Facenda, Nuno Vaz, Edgar Augusto Castañeda, Montserrat Del Amo, Ana Isabel Garcia-Diez, Jaime Pomes
Blunt injuries to the chest wall are an important chapter on emergency room (ER) departments, being the third most common injuries in trauma patients which ominous complications could appear. This article describes different types of traumatic events affecting the chest wall, which maybe misdiagnosed with conventional X-ray. Special emphasis has been done in computed tomography (CT) and multidetector CT (MDCT) imaging. This technique is considered the "gold-standard" for those traumatic patients, due to its fast acquisition covering the whole area of interest in axial plane, reconstructing multiplanar (2D, 3D) volume-rendered images with a superb quality and angiographic CT capabilities for evaluating vascular damage...
August 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28928325/transversus-abdominis-plane-block-for-pain-relief-in-patients-undergoing-in-endoscopic-repair-of-abdominal-wall-hernia-a-comparative-randomised-double-blind-prospective-study
#11
Aparna Sinha, Lakshmi Jayaraman, Dinesh Punhani, Pradeep Chowbey
INTRODUCTION: Transversus abdominis plane (TAP) block is now a well-established technique in post-operative analgesia for lower abdominal surgeries. We evaluated the effect of ultrasound-guided TAP block on recovery parameters in patients undergoing endoscopic repair of abdominal wall hernia. METHODS: Thirty adults were randomised to receive either ropivacaine with dexmedetomidine (TR) or saline (TP) in TAP block, before emergence from anaesthesia. The patients were assessed for pain relief, sedation, time to ambulate (TA), discharge readiness (DR), postoperative opioid requirement and any adverse events...
September 20, 2017: Journal of Minimal Access Surgery
https://www.readbyqxmd.com/read/28923514/cell-polarity-and-planar-cell-polarity-pcp-in-spermatogenesis
#12
REVIEW
Haiqi Chen, Dolores D Mruk, Wing-Yee Lui, Chris K C Wong, Will M Lee, C Yan Cheng
In adult mammalian testes, spermatids, most notably step 17-19 spermatids in stage IV-VIII tubules, are aligned with their heads pointing toward the basement membrane and their tails toward the tubule lumen. On the other hand, these polarized spermatids also align across the plane of seminiferous epithelium, mimicking planar cell polarity (PCP) found in other hair cells in cochlea (inner ear). This orderly alignment of developing spermatids during spermiogenesis is important to support spermatogenesis, such that the maximal number of developing spermatids can be packed and supported by a fixed population of differentiated Sertoli cells in the limited space of the seminiferous epithelium in adult testes...
September 28, 2017: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/28894842/retroperitoneal-actinomycosis-a-rare-sequela-of-an-infected-obstructing-ureteral-stone
#13
Elizabeth Bearrick, Colby A Dixon, Joshua Rhein, Michael S Borofsky
Background: Actinomycosis is a condition in which Actinomyces, a normal component of the oral and gastrointenstial flora, becomes pathogenic in the setting of damaged tissue, leading to widespread tissue destruction across fascial planes. Prior literature describing this condition is rare, particularly cases involving the retroperitoneum. In this study, we report a case of retroperitoneal actinomycosis caused by an infected, obstructing ureteral stone. Case Presentation: A 48-year-old woman with a history of substance abuse, malnutrition, and gastric bypass presented to the emergency room with a 3-week history of abdominal pain and fevers...
2017: Journal of Endourology Case Reports
https://www.readbyqxmd.com/read/28894127/dichotomy-between-in-plane-magnetic-susceptibility-and-resistivity-anisotropies-in-extremely-strained-bafe2as2
#14
Mingquan He, Liran Wang, Felix Ahn, Frédéric Hardy, Thomas Wolf, Peter Adelmann, Jörg Schmalian, Ilya Eremin, Christoph Meingast
High-temperature superconductivity in the Fe-based materials emerges when the antiferromagnetism of the parent compounds is suppressed by either doping or pressure. Closely connected to the antiferromagnetic state are entangled orbital, lattice, and nematic degrees of freedom, and one of the major goals in this field has been to determine the hierarchy of these interactions. Here we present the direct measurements and the calculations of the in-plane uniform magnetic susceptibility anisotropy of BaFe2As2, which help in determining the above hierarchy...
September 11, 2017: Nature Communications
https://www.readbyqxmd.com/read/28889743/prediction-of-green-phosphorus-with-tunable-direct-band-gap-and-high-mobility
#15
Woo Hyun Han, Sunghyun Kim, In-Ho Lee, Kee Joo Chang
Black phosphorus is an emerging material in nanoelectronics and nanophotonics due to its high carrier mobility and anisotropic in-plane properties. In addition, the polymorphism of phosphorus leads to numerous searches for new allotropes that are more attractive than black phosphorus in a variety of applications. On the basis of ab initio evolutionary crystal structure search computation, we report the prediction of a phosphorus allotrope called green phosphorus (λ-P), which exhibits direct band gaps ranging from 0...
September 13, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28868557/latest-advances-in-supercapacitors-from-new-electrode-materials-to-novel-device-designs
#16
REVIEW
Faxing Wang, Xiongwei Wu, Xinhai Yuan, Zaichun Liu, Yi Zhang, Lijun Fu, Yusong Zhu, Qingming Zhou, Yuping Wu, Wei Huang
Notably, many significant breakthroughs for a new generation of supercapacitors have been reported in recent years, related to theoretical understanding, material synthesis and device designs. Herein, we summarize the state-of-the-art progress toward mechanisms, new materials, and novel device designs for supercapacitors. Firstly, fundamental understanding of the mechanism is mainly focused on the relationship between the structural properties of electrode materials and their electrochemical performances based on some in situ characterization techniques and simulations...
September 4, 2017: Chemical Society Reviews
https://www.readbyqxmd.com/read/28862708/non-planar-pdms-microfluidic-channels-and-actuators-a-review
#17
REVIEW
Yongha Hwang, Rob N Candler
This review examines the state of the art for manufacturing non-planar miniature channels and actuators from PDMS, where non-planar structures are defined here as those beyond simple extrusions of 2D designs, either with rounded or variable cross sections or with an emergence of the channel trajectory out-of-plane. The motivation for 3D PDMS structures and advances in their fabrication are described, focusing on geometries that were previously unachievable through conventional microfabrication. The motivation for non-planar microfluidic channels and actuators is first discussed and the existing literature is grouped into general fabrication themes and described...
September 1, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28859058/preoperative-chemoradiation-with-capecitabine-irinotecan-and-cetuximab-in-rectal-cancer-significance-of-pre-treatment-and-post-resection-ras-mutations
#18
Simon Gollins, Nick West, David Sebag-Montefiore, Arthur Sun Myint, Mark Saunders, Shabbir Susnerwala, Phil Quirke, Sharadah Essapen, Leslie Samuel, Bruce Sizer, Jane Worlding, Katie Southward, Gemma Hemmings, Emma Tinkler-Hundal, Morag Taylor, Daniel Bottomley, Philip Chambers, Emma Lawrie, Andre Lopes, Sandy Beare
BACKGROUND: The influence of EGFR pathway mutations on cetuximab-containing rectal cancer preoperative chemoradiation (CRT) is uncertain. METHODS: In a prospective phase II trial (EXCITE), patients with magnetic resonance imaging (MRI)-defined non-metastatic rectal adenocarinoma threatening/involving the surgical resection plane received pelvic radiotherapy with concurrent capecitabine, irinotecan and cetuximab. Resection was recommended 8 weeks later. The primary endpoint was histopathologically clear (R0) resection margin...
August 31, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28852950/are-tumor-cell-lineages-solely-shaped-by-mechanical-forces
#19
Mathieu Leroy-Lerêtre, Giacomo Dimarco, Martine Cazales, Marie-Laure Boizeau, Bernard Ducommun, Valérie Lobjois, Pierre Degond
This paper investigates cell proliferation dynamics in small tumor cell aggregates using an individual-based model (IBM). The simulation model is designed to study the morphology of the cell population and of the cell lineages as well as the impact of the orientation of the division plane on this morphology. Our IBM model is based on the hypothesis that cells are incompressible objects that grow in size and divide once a threshold size is reached, and that newly born cell adhere to the existing cell cluster...
August 29, 2017: Bulletin of Mathematical Biology
https://www.readbyqxmd.com/read/28846423/oxidation-mechanism-and-protection-strategy-of-ultrathin-indium-selenide-insight-from-theory
#20
Li Shi, Qionghua Zhou, Yinghe Zhao, Yixin Ouyang, Chongyi Ling, Qiang Li, Jinlan Wang
Ultrathin indium selenide (InSe), as a newly emerging two-dimensional material with high carrier mobility and a broad absorption spectrum, has been the focus of current research. However, the long-term environmental instability of atomically thin InSe seriously limits its practical applications. To develop an effective strategy to protect InSe, it is crucial to reveal the degradation mechanism at the atomic level. By employing density functional theory and ab initio molecular dynamics simulations, we provide an in-depth understanding of the oxidation mechanism of InSe...
August 30, 2017: Journal of Physical Chemistry Letters
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