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https://www.readbyqxmd.com/read/29458122/regional-variations-of-cortical-bone-in-the-humeral-head-region-a-preliminary-study
#1
Yeming Wang, Jian Li, Jianhua Yang, Jingming Dong
BACKGROUND: Incidence of proximal humeral fractures dramatically increased over the last decade due to demographic changes. The goal of this study was to analyze regional characteristics of cortical bone in the humeral head region using cortical bone mapping (CBM) technique. METHODS: The proximal humerus of 103 healthy volunteers was imaged by clinical computed tomography (CT) scans. Three groups of volunteers were identified according to age: group A (20-39 years), group B (40-59 years), and group C (>60 years)...
February 16, 2018: Bone
https://www.readbyqxmd.com/read/29457861/promoted-fixation-of-molecular-nitrogen-with-surface-oxygen-vacancies-on-plasmon-enhanced-tio2-photoelectrodes
#2
Chengcheng Li, Tuo Wang, Zhi-Jian Zhao, Weimin Yang, Jianfeng Li, Ang Li, Zhilin Yang, Geoffrey A Ozin, Jinlong Gong
A hundred years on energy-intensive Haber-Bosch process continuously turn the nitrogen in air into fertilizer, nourishing billions of people while causing pollution and greenhouse gas emissions. The urgency of mitigating climate change motivates people to progress towards a more sustainable way in fixing nitrogen based on clean energy. Surface oxygen vacancies (surface Ovac) hold great potential for N2 adsorption and activation, but introducing Ovac on the very surface without affecting bulk properties remains a great challenge...
February 19, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29457727/epitaxial-growth-of-flat-antimonene-monolayer-a-new-honeycomb-analogue-of-graphene
#3
Yan Shao, Zhong-Liu Liu, Cai Cheng, Xu Wu, Hang Liu, Chen Liu, Jiaou Wang, Shi-Yu Zhu, Yu-Qi Wang, Dong-Xia Shi, Kurash Ibrahim, Jiatao Sun, Yeliang Wang, Hong-Jun Gao
Group-V elemental monolayers were recently predicted to exhibit exotic physical properties like nontrivial topological properties, or quantum anomalous Hall effect, which would make them very suitable for applications in next-generation electronic devices. The free-standing group-V monolayer materials usually have a buckled honeycomb form, in contrast with the flat graphene monolayer. Here, we report epitaxial growth of atomically thin flat honeycomb monolayer of group-V element antimony on a Ag(111) substrate...
February 19, 2018: Nano Letters
https://www.readbyqxmd.com/read/29457696/reshaping-a-multimode-laser-beam-into-a-constructed-gaussian-beam-for-generating-a-thin-light-sheet
#4
Saiedeh Saghafi, Nikoo Haghi-Danaloo, Klaus Becker, Inna Sabdyusheva, Massih Foroughipour, Christian Hahn, Marko Pende, Martina Wanis, Michael Bergmann, Judith Stift, Balazs Hegedus, Balazs Dome, Hans-Ulrich Dodt
Based on the modal analysis method, we developed a model that describes the output beam of a diode pumped solid state (DPSS) laser emitting a multimode beam. Measuring the output beam profile in the near field and at the constructed far field the individual modes, their respective contributions, and their optical parameters are determined. Using this information, the beam is optically reshaped into a quasi-Gaussian beam by the interference and superposition of the various modes. This process is controlled by a mode modulator unit that includes different meso-aspheric elements and a soft-aperture...
February 19, 2018: Journal of Biophotonics
https://www.readbyqxmd.com/read/29457652/expanding-the-histopathological-spectrum-of-cfl2-related-myopathies
#5
F Fattori, C Fiorillo, C Rodolico, G Tasca, M Verardo, E Bellacchio, S Pizzi, A Ciolfi, G Fagiolari, A Lupica, P Broda, M Pedemonte, M Moggio, C Bruno, M Tartaglia, E Bertini, A D'Amico
Congenital myopathies (CMs) caused by mutation in cofilin-2 gene (CFL2) show phenotypic heterogeneity ranging from early onset and rapid progressive forms to milder myopathy. Muscle histology is also heterogeneous showing rods and /or myofibrillar changes. Here, we report on three new cases, from two unrelated families, of severe CM related to novel homozygous or compound heterozygous loss-of-function mutations in CFL2. Peculiar histopathological changes showed nemaline bodies and thin filaments accumulations together to myofibrillar changes, which were evocative of the muscle findings observed in Cfl2-/- knockout mouse model...
February 19, 2018: Clinical Genetics
https://www.readbyqxmd.com/read/29457465/further-evaluation-of-a-practitioner-model-for-increasing-eye-contact-in-children-with-autism
#6
John T Rapp, Jennifer L Cook, Raluca Nuta, Carissa Balagot, Kayla Crouchman, Claire Jenkins, Sidrah Karim, Chelsea Watters-Wybrow
Cook et al. recently described a progressive model for teaching children with autism spectrum disorder (ASD) to provide eye contact with an instructor following a name call. The model included the following phases: contingent praise only, contingent edibles plus praise, stimulus prompts plus contingent edibles and praise, contingent video and praise, schedule thinning, generalization assessments, and maintenance evaluations. In the present study, we evaluated the extent to which modifications to the model were needed to train 15 children with ASD to engage in eye contact...
February 1, 2018: Behavior Modification
https://www.readbyqxmd.com/read/29457461/correction-to-single-molecule-studies-of-acidity-distributions-in-mesoporous-aluminosilicate-thin-films
#7
Xiaojiao Sun, Jingyi Xie, Jiayi Xu, Daniel A Higgins, Keith L Hohn
No abstract text is available yet for this article.
February 19, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29457452/a-multiple-stimuli-responsive-fluorescent-sensor-from-citric-acid-and-1-2-aminoethyl-piperazine
#8
Wen Yang, Fangbing Liu, Ran Li, Xiaoji Wang, Wentao Hao
Multi-responsive fluorescent supramolecular materials are quite interesting for that they combine the multi-responsiveness of supramolecules and the high-sensitivity of fluorescent materials. Different from the multi-responsive supramolecular materials based on host-guest interaction, in this report a supramolecular ionic network was fabricated by 1-(2-aminoethyl) piperazine (AEPZ) and citric acids via ionic interactions. Despite that there is none conventional chromophores, the obtained supramolecular ionic material can emit strong fluorescence...
February 19, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29457444/-effect-of-surface-modification-on-biotribological-properties-of-ultra-high-molecular-weight-polyethylene-artificial-joints
#9
REVIEW
Jie Ding, Yu-Song Pan
Friction and wear of ultra-high molecular weight polyethylene is a major cause of artificial joint failure. According to mechanism of surface modification method, friction reduction and wear-resistance properties of UHMWPE were improve by several kinds of surface modification methods. Meanwhile, this do not damage the internal structure and properties of UHMWPE. In the process, condition is easy to control and operation is simple. However, reaction time of radiation crosslinking method is too long, the material will be oxidized embrittlement; Monomer itself homopolymerization are seriously in the process of surface grafting; The injection layer of ion implantation methods is very thin and easy to be destroyed...
December 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29457432/-micro-ct-evaluating-inhibitory-effect-of-zoledronic-acid-on-polyethylene-particle-induced-periprosthetic-osteolysis-model
#10
Lian-Guo Wu, Feng-Qing Wu, Hua Chen
OBJECTIVE: To observe inhibitory effect of zoledronic acid on polyethylene particle-induced periprosthetic osteolysis model. METHODS: Thirty male adult specific-pathogen-free SD rats (weighted 250 to 300 g) were randomly divided into sham group, model group, and zoledronic acid group, 10 in each group. Modeling were building by titanium screws and polyethylene particles implanted into right femur of rats, sham group and model group were performed hypodermic injection by 0...
December 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29457377/pseudohalide-induced-2d-ch-3-nh-3-2-pbi-2-scn-2-perovskite-for-ternary-resistive-memory-with-high-performance
#11
Xue-Feng Cheng, Xiang Hou, Jin Zhou, Bi-Jun Gao, Jing-Hui He, Hua Li, Qing-Feng Xu, Na-Jun Li, Dong-Yun Chen, Jian-Mei Lu
Recently, organic-inorganic hybrid perovskites (OIHP) are studied in memory devices, but ternary resistive memory with three states based on OIHP is not achieved yet. In this work, ternary resistive memory based on hybrid perovskite is achieved with a high device yield (75%), much higher than most organic ternary resistive memories. The pseudohalide-induced 2D (CH3 NH3 )2 PbI2 (SCN)2 perovskite thin film is prepared by using a one-step solution method and fabricated into Al/perovskite film/indium-tin oxide (glass substrate as well as flexible polyethylene terephthalate substrate) random resistive access memory (RRAM) devices...
February 19, 2018: Small
https://www.readbyqxmd.com/read/29457308/single-carbon-fibers-with-a-macroscopic-thickness-3d-highly-porous-carbon-nanotube-coating
#12
Mingchu Zou, Wenqi Zhao, Huaisheng Wu, Hui Zhang, Wenjing Xu, Liusi Yang, Shiting Wu, Yunsong Wang, Yijun Chen, Lu Xu, Anyuan Cao
Carbon fiber (CF) grafted with a layer of carbon nanotubes (CNTs) plays an important role in composite materials and other fields; to date, the applications of CNTs@CF multiscale fibers are severely hindered by the limited amount of CNTs grafted on individual CFs and the weak interfacial binding force. Here, monolithic CNTs@CF fibers consisting of a 3D highly porous CNT sponge layer with macroscopic-thickness (up to several millimeters), which is directly grown on a single CF, are fabricated. Mechanical tests reveal high sponge-CF interfacial strength owing to the presence of a thin transitional layer, which completely inhibits the CF slippage from the matrix upon fracture in CNTs@CF fiber-epoxy composites...
February 19, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29457305/light-induced-reversible-control-of-ferroelectric-polarization-in-bifeo-3
#13
Ming-Min Yang, Marin Alexe
Manipulation of ferroic order parameters, namely (anti-)ferromagnetic, ferroelectric, and ferroelastic, by light at room temperature is a fascinating topic in modern solid-state physics due to potential cross-fertilization in research fields that are largely decoupled. Here, full optical control, that is, reversible switching, of the ferroelectric/ferroelastic domains in BiFeO3 thin films at room temperature by the mediation of the tip-enhanced photovoltaic effect is demonstrated. The enhanced short-circuit photocurrent density at the tip contact area generates a local electric field well exceeding the coercive field, enabling ferroelectric polarization switching...
February 19, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29457177/unprecedented-self-assembled-architectures-of-surface-active-ionic-liquids-in-aqueous-medium
#14
Gurbir Singh, Manvir Kaur, Markus Drechsler, Tejwant Singh Kang
The formation of ultra-thin 2D crystalline nano-sheets, -spindles and -ribbons by self-assembly of benzimidazolium-based single-tailed surface active ionic liquids (SAILs) is observed for the first time. The nature of formed bilayer architectures is governed by the functionalization of alkyl chains of SAILs via an amide or ester moiety.
February 19, 2018: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29457018/nail-changes-in-early-mycosis-fungoides
#15
Amir Hooshang Ehsani, Maryam Nasimi, Arghavan Azizpour, Pedram Noormohammadpoor, Kambiz Kamyab, Hasan Seirafi, Mojghan Noori
Background: Mycosis fungoides (MF) has a wide range of clinical presentations and it has been reported rarely to involve the nail apparatus. Objective: We intended to evaluate the frequency and characteristics of nail changes in patients with biopsy-proven MF. Methods: A retrospective analysis of 60 patients with MF who were evaluated at our cancer center from 2013 to 2014 was performed to identify patients with nail changes. Histological examinations of the skin around the nail apparatus were obtained from 10 patients with periungual skin erythema and scaling...
January 2018: Skin Appendage Disorders
https://www.readbyqxmd.com/read/29456862/thin-laryngeal-foreign-bodies-in-infants-diagnostic-potential-of-mdct
#16
Antonella Concerto, Marco Cavallaro, Carmela Visalli, Anna Maria Bagnato, Ugo Barbaro, Ignazio Salamone
A laryngeal foreign body (FB) is a significant, life-threatening event in the paediatric population. Incomplete airways obstruction by a thin, laminar, radiolucent FB lodged in the glottis or supraglottis is a rare occurrence that may present with non-specific symptoms, absence of chest findings, and normal radiographic investigations, resulting in misdiagnosis, delay in diagnosis, or prolonged recovery. We report two cases of 10-month-old male infants, each with a thin radiolucent FB lodged between the vocal folds that was detected with low-dose multidetector computed tomography (MDCT) and thin-slice reconstruction...
April 2018: Respirology Case Reports
https://www.readbyqxmd.com/read/29456564/role-of-granulocyte-colony-stimulating-factor-in-human-reproduction
#17
REVIEW
Maryam Eftekhar, Elham Naghshineh, Parisa Khani
As new research reveals, granulocyte colony-stimulating factor (G-CSF) plays an effective role in pregnancy success, considering that it not only affects the embryo implantation and ovarian function but also it promotes endometrial thickening and improves the pathophysiology of endometriosis, which all fundamentally lead to reducing pregnancy loss. In this review, we focus on the role of G-CSF in human reproduction. We summarized its role in ovulation, luteinized unruptured follicle syndrome, poor responders, improving repeated in vitro fertilization failure, endometrial receptivity and treatment of thin endometrium, and recurrent spontaneous abortion...
2018: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/29456390/evaluation-of-clinical-and-magnetic-resonance-imaging-profile-of-pituitary-macroadenoma-a-prospective-study
#18
Kamini Gupta, Shivam Sahni, Kavita Saggar, Gaurav Vashisht
Background: Pituitary macroadenoma is a common tumor of middle-aged people. Magnetic resonance imaging (MRI) is the investigation of choice for its evaluation. Various parameters regarding the extent, consistency, and contrast uptake can be studied and a noninvasive diagnosis is possible. Aims and Objectives: To study the MRI features and extent of pituitary macroadenomas. Materials and Methods: We studied clinical and MRI features of 33 patients of all age groups and both sexes with pituitary macroadenomas who presented to Dayanand Medical College and Hospital, Ludhiana from January 2014 to June 2015...
January 2018: Journal of Natural Science, Biology, and Medicine
https://www.readbyqxmd.com/read/29456268/evidence-for-ubiquitous-preferential-particle-orientation-in-representative-oceanic-shear-flows
#19
Aditya R Nayak, Malcolm N McFarland, James M Sullivan, Michael S Twardowski
In situ measurements were undertaken to characterize particle fields in undisturbed oceanic environments. Simultaneous, co-located depth profiles of particle fields and flow characteristics were recorded using a submersible holographic imaging system and an acoustic Doppler velocimeter, under different flow conditions and varying particle concentration loads, typical of those found in coastal oceans and lakes. Nearly one million particles with major axis lengths ranging from ∼14 μm to 11.6 mm, representing diverse shapes, sizes, and aspect ratios were characterized as part of this study...
January 2018: Limnology and Oceanography
https://www.readbyqxmd.com/read/29456258/modifying-the-standard-disk-model-for-the-ultraviolet-spectral-analysis-of-disk-dominated-cataclysmic-variables-i-the-novalikes-mv-lyrae-bz-camelopardalis-and-v592-cassiopeiae
#20
Patrick Godon, Edward M Sion, Şölen Balman, William P Blair
The standard disk is often inadequate to model disk-dominated cataclysmic variables (CVs) and generates a spectrum that is bluer than the observed UV spectra. X-ray observations of these systems reveal an optically thin boundary layer (BL) expected to appear as an inner hole in the disk. Consequently, we truncate the inner disk. However, instead of removing the inner disk, we impose the no-shear boundary condition at the truncation radius, thereby lowering the disk temperature and generating a spectrum that better fits the UV data...
September 1, 2017: Astrophysical Journal
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