keyword
MENU ▼
Read by QxMD icon Read
search

Dimensionality reduction

keyword
https://www.readbyqxmd.com/read/28926260/the-effect-of-thickness-and-chemical-reduction-of-graphene-oxide-on-nanoscale-friction
#1
Sangku Kwon, Kyung Eun Lee, Hyunsoo Lee, Sang Joon Koh, Jae-Hyeon Ko, Yong-Hyun Kim, Sang Ouk Kim, Jeong Young Park
The tribological properties of two-dimensional (2D) atomic layers are quite different from three-dimensional (3D) continuum materials because of the unique mechanical responses of 2D layers. It is known that friction on graphene shows a remarkable decreasing behavior as the number of layers increases, which is caused by the puckering effect. On other graphene derivatives, such as graphene oxide (GO) or reduced graphene oxide (rGO), the thickness dependence of friction is important because of the possibilities for technical applications...
September 19, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28925750/study-of-the-x-ray-diagnosis-of-unstable-pelvic-fracture-displacements-in-three-dimensional-space-and-its-application-in-closed-reduction
#2
Chengdi Shi, Leyi Cai, Wei Hu, Junying Sun
ABSTRACTS Objective: To study the method of X-ray diagnosis of unstable pelvic fractures displaced in three-dimensional (3D) space and its clinical application in closed reduction. METHODS: Five models of hemipelvic displacement were made in an adult pelvic specimen. Anteroposterior radiographs of the pelvis were analyzed in PACS. The method of X-ray diagnosis was applied in closed reductions. From February 2012 to June 2016, 23 patients (15 men, 8 women; mean age, 43.4 years) with unstable pelvic fractures were included...
September 19, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28923031/positive-mental-health-literacy-development-and-validation-of-a-measure-among-norwegian-adolescents
#3
Hanne Nissen Bjørnsen, Mary Elizabeth Bradley Eilertsen, Regine Ringdal, Geir Arild Espnes, Unni Karin Moksnes
BACKGROUND: Mental health literacy (MHL), or the knowledge and abilities necessary to benefit mental health, is a significant determinant of mental health and has the potential to benefit both individual and public mental health. MHL and its measures have traditionally focused on knowledge and beliefs about mental -ill-health rather than on mental health. No measures of MHL addressing knowledge of good or positive mental health have been identified. AIM: This study aimed to develop and validate an instrument measuring adolescents' knowledge of how to obtain and maintain good mental health and to evaluate the psychometric properties of the instrument...
September 18, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28922485/novel-3d-semiconducting-open-frameworks-based-on-cuprous-bromides-with-visible-light-driven-photocatalytic-properties
#4
Xiao-Wu Lei, Cheng-Yang Yue, Jun-Chao Wei, Rui-Qing Li, Fu-Qi Mi, Yan Li, Lu Gao, Quan-Xiu Liu
Visible light driven photocatalysts based on crystalline microporous metal halogenides received much less attention compared with dense or composite oxide semiconductors. Using the well-known photosensitive transition metal-complexes [TM(2,2-bipy)3 ](2+) (TM=Fe, Co, Ni, Ru) as templates, a special three-dimensional (3D) metal halogenide framework of [TM(2,2-bipy)3 ]Cu4 Br6 was designed with [Cu4 Br4 ] cluster as 4-connected node. These microporous materials feature narrow band gaps and stable visible light driven photocatalytic properties including water reduction to provide H2 and photodegradation of organic pollutants...
August 9, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28920625/simultaneous-modulation-of-surface-composition-oxygen-vacancies-and-assembly-in-hierarchical-co3o4-mesoporous-nanostructures-for-lithium-storage-and-electrocatalytic-oxygen-evolution
#5
Hongyu Sun, Yanyan Zhao, Kristian Mølhave, Minwei Zhang, Jingdong Zhang
We developed a facile solution reductive method to simultaneously tune the surface composition, oxygen vacancies and three dimensional assembly in Co3O4 hierarchical nanostructures. The controllable surface composition, oxygen vacancies together with hierarchical micro/nanoarchitectures resulted in superior electrochemical properties when used as the anode materials for lithium-ion batteries and as an electrocatalyst for the oxygen evolution reaction. The excellent electrochemical performance is attributed to the synergistic effects of novel hierarchical morphology, crystal structure of the active materials, the improvement of intrinsic conductivity and inner surface area induced by the oxygen vacancies...
September 18, 2017: Nanoscale
https://www.readbyqxmd.com/read/28920439/multi-material-3d-printing-of-graphene-based-electrodes-for-electrochemical-energy-storage-using-thermo-responsive-inks
#6
Victoria García Rocha, Esther Garcia-Tunon, Cristina Botas, Foivos Markoulidis, Ezra Feilden, Eleonora D'Elia, Na Ni, Milo Sebastian Peter Shaffer, Eduardo Saiz
The current lifestyles, increasing population and limited resources result in energy research being at the forefront of worldwide grand challenges, increasing the demand for sustainable and more efficient energy devices. In this context, Additive Manufacturing brings the possibility of making electrodes and electrical energy storage (EES) devices in any desired 3D shape and dimensions, while preserving the multifunctional properties of the active materials in terms of surface area and conductivity. This paves the way to optimized and more efficient designs for energy devices...
September 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28919849/interhemispheric-resting-state-functional-connectivity-predicts-severity-of-idiopathic-normal-pressure-hydrocephalus
#7
Yousuke Ogata, Akihiko Ozaki, Miho Ota, Yurie Oka, Namiko Nishida, Hayato Tabu, Noriko Sato, Takashi Hanakawa
Idiopathic normal pressure hydrocephalus (iNPH) is characterized by a clinical triad (gait disturbance, dementia, and urinary incontinence), and by radiological findings of enlarged ventricles reflecting disturbance of central spinal fluid circulation. A diagnosis of iNPH is sometimes challenging, and the pathophysiological mechanisms underlying the clinical symptoms of iNPH remain largely unknown. Here, we used an emerging MRI technique, resting-state functional connectivity MRI (rsfcMRI), to develop a subsidiary diagnostic technique and to explore the underlying pathophysiological mechanisms of iNPH...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28918998/convex-bone-deformity-after-closed-reduction-of-nasal-bone-fracture
#8
Hiroshi Nishioka, Shoji Kondoh, Shunsuke Yuzuriha
BACKGROUND: Nasal fracture is the most common type of facial fracture treated by plastic surgeons. Here, we clarify the postoperative deformities that frequently remain after closed reduction of fresh nasal bone fracture by three-dimensional computed tomography (3D-CT). METHODS: Hundred consecutive cases of fresh nasal bone fracture in patients treated between May 2010 and January 2016 were examined. After closed reduction, the overall appearance of the arch formed by the nasal bone and maxillary process was evaluated as 'Excellent', 'Good' or 'Fair'...
August 24, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28918577/microarray-based-snp-genotyping-to-identify-genetic-risk-factors-of-triple-negative-breast-cancer-tnbc-in-south-indian-population
#9
M Aravind Kumar, Vineeta Singh, Shaik Mohammad Naushad, Uday Shanker, M Lakshmi Narasu
In the view of aggressive nature of Triple-Negative Breast cancer (TNBC) due to the lack of receptors (ER, PR, HER2) and high incidence of drug resistance associated with it, a case-control association study was conducted to identify the contributing genetic risk factors for Triple-negative breast cancer (TNBC). A total of 30 TNBC patients and 50 age and gender-matched controls of Indian origin were screened for 9,00,000 SNP markers using microarray-based SNP genotyping approach. The initial PLINK association analysis (p < 0...
September 16, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28918267/compulsivity-in-opioid-dependence
#10
Serenella Tolomeo, Keith Matthews, J Douglas Steele, Alex Baldacchino
OBJECTIVE: This study aimed to investigate the relationship between compulsivity versus impulsivity and structural MRI abnormalities in opioid dependence. METHOD: We recruited 146 participants: i) patients with a history of opioid dependence due to chronic heroin use (n=24), ii) heroin users stabilised on methadone maintenance treatment (n=48), iii) abstinent participants with a history of opioid dependence due to heroin use (n=24) and iv) healthy controls (n=50)...
September 13, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28916844/left-sided-breast-cancer-and-risks-of-secondary-lung-cancer-and-ischemic-heart-disease-effects-of-modern-radiotherapy-techniques
#11
Stefanie Corradini, Hendrik Ballhausen, Helmut Weingandt, Philipp Freislederer, Stephan Schönecker, Maximilian Niyazi, Cristoforo Simonetto, Markus Eidemüller, Ute Ganswindt, Claus Belka
PURPOSE: Modern breast cancer radiotherapy techniques, such as respiratory-gated radiotherapy in deep-inspiration breath-hold (DIBH) or volumetric-modulated arc radiotherapy (VMAT) have been shown to reduce the high dose exposure of the heart in left-sided breast cancer. The aim of the present study was to comparatively estimate the excess relative and absolute risks of radiation-induced secondary lung cancer and ischemic heart disease for different modern radiotherapy techniques. METHODS: Four different treatment plans were generated for ten computed tomography data sets of patients with left-sided breast cancer, using either three-dimensional conformal radiotherapy (3D-CRT) or VMAT, in free-breathing (FB) or DIBH...
September 15, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/28916281/explaining-the-spatiotemporal-variation-of-fine-particle-number-concentrations-over-beijing-and-surrounding-areas-in-an-air-quality-model-with-aerosol-microphysics
#12
Xueshun Chen, Zifa Wang, Jie Li, Huansheng Chen, Min Hu, Wenyi Yang, Zhe Wang, Baozhu Ge, Dawei Wang
In this study, a three-dimensional air quality model with detailed aerosol microphysics (NAQPMS + APM) was applied to simulate the fine particle number size distribution and to explain the spatiotemporal variation of fine particle number concentrations in different size ranges over Beijing and surrounding areas in the haze season (Jan 15 to Feb 13 in 2006). Comparison between observations and the simulation indicates that the model is able to reproduce the main features of the particle number size distribution...
September 12, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28916132/the-association-between-elevated-blood-lead-levels-and-violent-behavior-during-late-adolescence-the-south-african-birth-to-twenty-plus-cohort
#13
Palesa Nkomo, Angela Mathee, Nisha Naicker, Jacky Galpin, Linda M Richter, Shane A Norris
Epidemiological studies have shown the adverse neuro-behavioral health effects of lead exposure among children, in particular. However, there is lack evidence in this regard from developing countries. The main aim of this study was to assess the association between blood lead levels (BLLs) during early adolescence and violent behavior in late adolescence. Our study sample from the Birth to Twenty Plus cohort in Soweto-Johannesburg, South Africa included 1332 study participants (684 females). BLLs were measured using blood samples collected at age 13years...
September 12, 2017: Environment International
https://www.readbyqxmd.com/read/28915007/synthesis-and-properties-of-2d-carbon-graphdiyne
#14
Zhiyu Jia, Yongjun Li, Zicheng Zuo, Huibiao Liu, Changshui Huang, Yuliang Li
Graphdiyne (GDY) is a flat material comprising sp(2)- and sp-hybridized carbon atoms with high degrees of π conjugation that features uniformly distributed pores. It is interesting not only from a structural point of view but also from the perspective of its electronic, chemical, mechanical, and magnetic properties. We have developed an in situ homocoupling reaction of hexaethynylbenzene on Cu foil for the fabrication of large-area ordered films of graphdiyne. These films are uniform and composed of graphdiyne multilayers...
September 15, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28913938/application-of-craft-complete-reduction-to-amplitude-frequency-table-in-non-uniformly-sampled-nus-two-dimensional-nmr-data-processing
#15
Krish Krishnamurthy, Natarajan Hari
The recently published CRAFT (Complete Reduction to Amplitude Frequency Table) technique converts the raw FID data (i.e., time domain data) into a table of frequencies, amplitudes, decay rate constants and phases. It offers an alternate approach to decimate time-domain data, with minimal pre-processing step. It has been shown that application of CRAFT technique to process the t1 dimension of the 2D data, significantly improved the detectable resolution by it ability to analyze without the use of ubiquitous apodization of extensively zero-filled data...
September 15, 2017: Magnetic Resonance in Chemistry: MRC
https://www.readbyqxmd.com/read/28904781/sharing-is-caring-measurement-error-and-the-issues-arising-from-combining-3d-morphometric-datasets
#16
Carmelo Fruciano, Mélina A Celik, Kaylene Butler, Tom Dooley, Vera Weisbecker, Matthew J Phillips
Geometric morphometrics is routinely used in ecology and evolution and morphometric datasets are increasingly shared among researchers, allowing for more comprehensive studies and higher statistical power (as a consequence of increased sample size). However, sharing of morphometric data opens up the question of how much nonbiologically relevant variation (i.e., measurement error) is introduced in the resulting datasets and how this variation affects analyses. We perform a set of analyses based on an empirical 3D geometric morphometric dataset...
September 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28904754/interactive-effects-of-leg-autotomy-and-incline-on-locomotor-performance-and-kinematics-of-the-cellar-spider-pholcus-manueli
#17
Gary W Gerald, Moriah M Thompson, Todd D Levine, Kerri M Wrinn
Leg autotomy can be a very effective strategy for escaping a predation attempt in many animals. In spiders, autotomy can be very common (5-40% of individuals can be missing legs) and has been shown to reduce locomotor speeds, which, in turn, can reduce the ability to find food, mates, and suitable habitat. Previous work on spiders has focused mostly on the influence of limb loss on horizontal movements. However, limb loss can have differential effects on locomotion on the nonhorizontal substrates often utilized by many species of spiders...
September 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28903963/predictors-of-radio-induced-visual-impairment-after-radiosurgery-for-uveal-melanoma
#18
Carmen Rosaria Gigliotti, Giulio Modorati, Maura Di Nicola, Claudio Fiorino, Lucia Alessia Perna, Elisabetta Miserocchi, Alberto Franzin, Piero Picozzi, Angelo Bolognesi, Pietro Mortini, Antonella Del Vecchio, Riccardo Calandrino
AIMS: The aim of the present work is to assess the main predictors of the most clinically relevant radio-induced effects after Gamma Knife stereotactic radiosurgery (GKRS) for uveal melanoma (UM). MATERIALS AND METHODS: Medical records and three-dimensional dosimetry data of critical structures of 66 patients were retrospectively reviewed. Cox's proportional hazard model was used to identify clinical and dosimetric variables as independent risk factor for GKRS-related complications...
September 13, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28900202/pixelated-checkerboard-metasurface-for-ultra-wideband-radar-cross-section-reduction
#19
Mohammad-Javad Haji-Ahmadi, Vahid Nayyeri, Mohammad Soleimani, Omar M Ramahi
In this paper we designed and fabricated a metasurface working as a radar cross section (RCS) reducer over an ultra wide band of frequency from 3.8 to 10.7 GHz. The designed metasurface is a chessboard-like surface made of alternating tiles, with each tile composed of identical unit cells. We develop a novel, simple, highly robust and fully automated approach for designing the unit cells. First, a topology optimization algorithm is used to engineer the shape of the two unit cells. The area of each unit cell is pixelated...
September 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28898487/structural-and-thermodynamic-characterization-of-metal-binding-in-vps29-from-entamoeba-histolytica-implication-in-retromer-function
#20
Vijay Kumar Srivastava, Rupali Yadav, Watanabe Natsuki, Priya Tomar, Madhumita Mukherjee, Samudrala Gourinath, Kumiko Nakada-Tsukui, Tomoyoshi Nozaki, Sunando Datta
Vps29 is the smallest subunit of retromer complex with metallo-phosphatase fold. Although the role of metal in Vps29 is in quest, its metal binding mutants has been reported to affect the localization of the retromer complex in human cells. In this study, we report the structural and thermodynamic consequences of these mutations in Vps29 from the protozoan parasite, Entamoeba histolytica (EhVps29). EhVps29 is a zinc binding protein as revealed by X-ray crystallography and isothermal titration calorimetry. The metal binding pocket of EhVps29 exhibits marked differences in its 3-dimensional architecture and metal coordination in comparison to its human homologs and other metallo-phosphatases...
September 12, 2017: Molecular Microbiology
keyword
keyword
47252
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"