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Bimodality

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https://www.readbyqxmd.com/read/28653532/enhanced-electrocatalytic-activity-of-pt-3d-hierarchical-bimodal-macroporous-carbon-nanospheres
#1
Ratna Balgis, W Widiyastuti, Takashi Ogi, Kikuo Okuyama
Proton exchange membrane fuel cells require electrocatalysts with high platinum (Pt) loading, a large active surface area, and a favorable hydrodynamic profile for practical applications. Here we report the design of 3D hierarchically bimodal macroporous carbon nanospheres with an interconnected pore system, which are applied as an electrocatalyst support. Carbon-supported Pt (Pt/C) catalysts were prepared by aerosol spray pyrolysis followed by microwave chemical deposition. The hierarchical porous structures not only increased the dispersion of Pt nanoparticles but also improved catalytic performance...
June 27, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28651090/spatio-temporal-variability-of-particulate-matter-in-the-key-part-of-gansu-province-western-china
#2
Qingyu Guan, Ao Cai, Feifei Wang, Liqin Yang, Chuanqi Xu, Zeyu Liu
To investigate the spatial and temporal behaviors of particulate matter in Lanzhou, Jinchang and Jiayuguan during 2014, the hourly concentrations of PM2.5 and PM10 were collected from the Ministry of Environmental Protection (MEP) in this study. The analysis indicated that the mean annual PM10 (PM2.5) concentrations during 2014 were 115 ± 52 μg/m(3) (57 ± 28 μg/m(3)), 104 ± 75 μg/m(3) (38 ± 22 μg/m(3)) and 114 ± 72 μg/m(3) (32 ± 17 μg/m(3)) in Lanzhou, Jinchang and Jiayuguan, respectively, all of which exceeded the Chinese national ambient air quality II standards for PM...
June 23, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28650963/a-new-mechanistic-approach-for-the-further-development-of-a-population-with-established-size-bimodality
#3
Lisa Heermann, Donald L DeAngelis, Jost Borcherding
Usually, the origin of a within-cohort bimodal size distribution is assumed to be caused by initial size differences or by one discrete period of accelerated growth for one part of the population. The aim of this study was to determine if more continuous pathways exist allowing shifts from the small to the large fraction within a bimodal age-cohort. Therefore, a Eurasian perch population, which had already developed a bimodal size-distribution and had differential resource use of the two size-cohorts, was examined...
2017: PloS One
https://www.readbyqxmd.com/read/28643695/highly-fluorescent-and-superparamagnetic-nanosystem-for-biomedical-applications
#4
Mariana P Cabrera, Paulo E Cabral Filho, Camila M C M Silva, Rita M Oliveira, Carlos F G C Geraldes, M Margarida C A Castro, Benilde F O Costa, Marta S C Henriques, José A Paixão, Luiz B Carvalho, Beate S Santos, Fernando Hallwass, Adriana Fontes, Giovannia A L Pereira
This work reports on highly fluorescent and superparamagnetic bimodal nanoparticles (BNPs) obtained by a simple and efficient method as probes for fluorescence analysis and/or contrast agents for MRI. These promising BNPs with small dimensions (ca. 17 nm) consist of superparamagnetic iron oxide nanoparticles (SPIONs) covalently bound with CdTe quantum dots (ca. 3 nm). The chemical structure of the magnetic part of BNPs is predominantly magnetite, with minor goethite and maghemite contributions, as shown by Mössbauer spectroscopy, which is compatible with the x-ray diffraction data...
July 14, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28636287/the-spectrum-of-aseptic-central-nervous-system-infections-in-southern-germany-demographic-clinical-and-laboratory-findings
#5
M Kaminski, V Grummel, D Hoffmann, A Berthele, B Hemmer
BACKGROUND AND PURPOSE: Aseptic infections of the central nervous system (CNS) are frequently observed in Germany. However, no study has systematically addressed the spectrum of aseptic CNS infections in Germany. METHODS: Data on 191 adult patients diagnosed from January 2007 to December 2014 with aseptic meningitis or encephalitis/meningoencephalitis at our hospital were collected by chart review and analyzed for demographic, clinical and laboratory findings. Patients were stratified according to the causative virus and findings were compared between groups...
June 21, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28635615/topography-on-a-subcellular-scale-modulates-cellular-adhesions-and-actin-stress-fiber-dynamics-in-tumor-associated-fibroblasts
#6
Mikheil Azatov, Xiaoyu Sun, Alexandra Suberi, John T Fourkas, Arpita Upadhyaya
Cells can sense and adapt to mechanical properties of their environment. The local geometry of the extracellular matrix, such as its topography, has been shown to modulate cell morphology, migration, and proliferation. Here we investigate the effect of micro/nanotopography on the morphology and cytoskeletal dynamics of human pancreatic tumor-associated fibroblast cells (TAFs). We use arrays of parallel nanoridges with variable spacings on a subcellular scale to investigate the response of TAFs to the topography of their environment...
June 21, 2017: Physical Biology
https://www.readbyqxmd.com/read/28633746/extragenital-bullous-lichen-sclerosus-on-the-anterior-lower-extremities-report-of-a-case-and-literature-review
#7
Nichelle Arnold, Mitch Manway, Sean Stephenson, Howard Lipkin
Lichen sclerosus (LS) is a benign, chronic, inflammatory skin disease with a predilection for the anogenital region in women. Although males can also be affected, the ratio of female to male incidence has been reported to be as high as 6-10:1 and possesses a bimodal age distribution of pre-pubertal girls and postmenopausal women [1, 2]. Affected skin usually demonstrates polygonal papules that coalesce into porcelain white plaques and can be associated with edema, telangiectasias, and comedo-like plug formation [3]...
June 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28624466/resectable-clinical-n2-non-small-cell-lung-cancer-what-is-the-optimal-treatment-strategy-an-update-by-the-british-thoracic-society-lung-cancer-specialist-advisory-group
#8
Matthew Evison, Amelia Clive, Lianne Castle, Helen Powell, Rachel Thomas, Robert Buttery, Vidan Masani, Susan Harden, Doug West, Ian Woolhouse
Patients and clinicians are faced with uncertainty on the optimal treatment strategy for potentially resectable non-small cell lung cancer where there is clinical evidence of involvement of the ipsilateral mediastinum. Randomised controlled trials and meta-analyses have failed to demonstrate superiority of one bimodality strategy over another (chemotherapy plus surgery versus chemotherapy plus radiotherapy). One trial of trimodality treatment with chemotherapy, radiotherapy and surgery demonstrated an improvement in progression-free, but not overall, survival versus chemotherapy and radiotherapy...
June 14, 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28620825/flow-cytometric-characterization-of-t-cell-subsets-and-microglia-after-repetitive-mild-traumatic-brain-injury-in-rats
#9
Ruojing Bai, Huabin Gao, Zhaoli Han, Shan Huang, Xintong Ge, Fanglian Chen, Ping Lei
Although, there is growing awareness in the progressive neurodegeneration of chronic traumatic encephalopathy, changes of immune reactions remain equivocal at best. Thus, in a clinically relevant rat repetitive mild traumatic brain injury (rmTBI) model, some immunologic cells (T cell subsets, microglia) in the injured brain and peripheral blood were analyzed by flow cytometry and immunofluorescence. In the injured brain, CD3(+) T cells showed a bimodal increase during 42 days post-injury (dpi). CD3(+)CD4(+) T cells firstly increased and then decreased, while CD3(+)CD8(+) T cells had reversed tendency...
June 15, 2017: Neurochemical Research
https://www.readbyqxmd.com/read/28616294/optical-imaging-of-tissue-obtained-by-transbronchial-biopsies-of-peripheral-lung-lesions
#10
Kassem Harris, Daniel J Rohrbach, Kristopher Attwood, Jingxin Qiu, Ulas Sunar
BACKGROUND: Bronchoscopic procedures have been increasingly used for the diagnosis of peripheral lung cancers, but the yield remains moderately low. The aim of this study is to assess the feasibility and ability of a custom-built bimodal optical spectroscopy system to enhance the on-site discrimination between malignant and benign specimens obtained from the transbronchial lung biopsies (TBLB) of peripheral lung lesions. METHODS: We conducted a prospective and single-center pilot study to examine the TBLB specimens obtained from peripheral lung lesions...
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28615895/study-of-refractory-status-epilepticus-from-a-tertiary-care-center
#11
Sahil Kohli, Suresh Babu Pasangulapati, Sangeetha Yoganathan, Gideon Lyngsyun Rynjah, A T Prabhakar, Sanjith Aaron, Mathew Alexander, Vivek Mathew
OBJECTIVES: To determine the proportion of refractory status epilepticus (RSE) and super-RSE (SRSE) among patients with status epilepticus (SE) and to analyze RSE and non-RSE (NRSE) in terms of etiology and predictors for RSE. MATERIALS AND METHODS: Patients were identified from discharge summaries database with keywords of SE and records of the portable electroencephalogram (EEG) machine from January 2011 to March 2016. RESULTS: Two hundred and eighteen events were included in the study with 114 (52...
April 2017: Annals of Indian Academy of Neurology
https://www.readbyqxmd.com/read/28615770/the-mood-spectrum-and-temperamental-instability-in-unipolar-and-bipolar-disorder
#12
Manish Kumar, Pradeep Kumar Saha, Anwesha Mondal
BACKGROUND: The current categorical split of mood disorders in bipolar (BP) disorders and depressive disorders has recently been questioned. The presence of a significant number of manic/hypomanic symptoms in patients with recurrent unipolar depression seems to challenge the traditional dichotomy of unipolar-BP disorder. Two highly unstable personality features, i.e., the cyclothymic temperament (CT) and borderline personality disorder, have been found to be more common in BP disorder than in major depressive disorder...
May 2017: Indian Journal of Psychological Medicine
https://www.readbyqxmd.com/read/28615697/remodeling-of-the-cycling-transcriptome-of-the-oyster-crassostrea-gigas-by-the-harmful-algae-alexandrium-minutum
#13
Laura Payton, Mickael Perrigault, Claire Hoede, Jean-Charles Massabuau, Mohamedou Sow, Arnaud Huvet, Floriane Boullot, Caroline Fabioux, Hélène Hegaret, Damien Tran
As a marine organism, the oyster Crassostrea gigas inhabits a complex biotope governed by interactions between the moon and the sun cycles. We used next-generation sequencing to investigate temporal regulation of oysters under light/dark entrainment and the impact of harmful algal exposure. We found that ≈6% of the gills' transcriptome exhibits circadian expression, characterized by a nocturnal and bimodal pattern. Surprisingly, a higher number of ultradian transcripts were also detected under solely circadian entrainment...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28615687/multi-drug-resistant-klebsiella-pneumoniae-strains-circulating-in-hospital-setting-whole-genome-sequencing-and-bayesian-phylogenetic-analysis-for-outbreak-investigations
#14
Eleonora Cella, Massimo Ciccozzi, Alessandra Lo Presti, Marta Fogolari, Taj Azarian, Mattia Prosperi, Marco Salemi, Michele Equestre, Francesca Antonelli, Alessia Conti, Marina De Cesaris, Silvia Spoto, Raffaele Antonelli Incalzi, Roberto Coppola, Giordano Dicuonzo, Silvia Angeletti
Carbapenems resistant Enterobacteriaceae infections are increasing worldwide representing an emerging public health problem. The application of phylogenetic and phylodynamic analyses to bacterial whole genome sequencing (WGS) data have become essential in the epidemiological surveillance of multi-drug resistant nosocomial pathogens. Between January 2012 and February 2013, twenty-one multi-drug resistant K. pneumoniae strains, were collected from patients hospitalized among different wards of the University Hospital Campus Bio-Medico...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28614630/prevalence-of-atopic-disease-in-patients-with-eosinophilic-esophagitis
#15
Michael S Benninger, Madeleine Strohl, Chantal E Holy, Andrea L Hanick, Paul C Bryson
BACKGROUND: The objective of this work was to evaluate prevalence of eosinophilic esophagitis (EoE) in the United States, and analyze prevalence of atopic disease in patients with EoE. The study design was a retrospective administrative database analysis in U.S.-based outpatient settings. METHODS: A retrospective claims analysis in the inpatient and outpatient setting (using MarketScan) was conducted to analyze prevalence of atopic disease diagnoses in patients with EoE in 2012, and timing of those diagnoses vs EoE...
June 14, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28614204/human-papillomavirus-hpv-genotypes-in-condylomas-intraepithelial-neoplasia-and-invasive-carcinoma-of-the-penis-using-laser-capture-microdissection-lcm-pcr-a-study-of-191-lesions-in-43-patients
#16
María J Fernández-Nestosa, Nuria Guimerà, Diego F Sanchez, Sofía Cañete-Portillo, Elsa F Velazquez, David Jenkins, Wim Quint, Antonio L Cubilla
Laser capture microdissection-polymerase chain reaction (LCM-PCR) supported by p16 was used for the first time to demonstrate human papillomavirus (HPV) DNA in histologically specific penile lesions, which were as follows: squamous hyperplasia (12 lesions, 10 patients), flat lesions (12 lesions, 5 patients), condylomas (26 lesions, 7 patients), penile intraepithelial neoplasia (PeIN) (115 lesions, 43 patients), and invasive squamous cell carcinomas (26 lesions, 26 patients). HPV was detected by whole-tissue section and LCM-PCR...
June 13, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28612884/computer-simulation-study-on-the-self-assembly-of-unimodal-and-bimodal-polymer-grafted-nanoparticles-in-a-polymer-melt
#17
Rui Shi, Hu-Jun Qian, Zhong-Yuan Lu
The controllable distribution of nanoparticles (NPs) in polymer nanocomposites (PNCs) is a challenge in materials science. An important method is grafting chains that are chemically identical to the polymer matrix on NPs. By performing comprehensive molecular dynamics simulations, the self-assembly behavior of polymer-grafted NPs in a polymer matrix is investigated in this study. The relationship between the grafted chain length N, grafting density σ and the NPs' self-assembly morphologies is studied. Phase diagrams of the NP self-assembly structures for both unimodal and bimodal grafted NP systems are constructed on a parameter space, where P is the matrix polymer chain length...
June 14, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28612138/transient-receptor-potential-vanilloid-4-trpv4-channel-as-a-target-of-crotamiton-and-its-bimodal-effects
#18
Hiroki Kittaka, Yu Yamanoi, Makoto Tominaga
The sensation of itching can be defined as "an unpleasant cutaneous sensation that provokes a desire to scratch." The perception of itching is not critical for the maintenance of life, but persistent itching can be extremely irritating and decreases the quality of life. Crotamiton (N-ethyl-o-crotonotoluidide) has been used as an anti-itch agent for humans for around 70 years. In spite of the long use of crotamiton, its mechanism of action remains unknown. We hypothesized that crotamiton might have effects on transient receptor potential (TRP) channels expressed in the peripheral nervous system and the skin...
June 13, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28611727/non-invasive-brain-stimulation-to-enhance-upper-limb-motor-practice-poststroke-a-model-for-selection-of-cortical-site
#19
Michelle L Harris-Love, Rachael M Harrington
Motor practice is an essential part of upper limb motor recovery following stroke. To be effective, it must be intensive with a high number of repetitions. Despite the time and effort required, gains made from practice alone are often relatively limited, and substantial residual impairment remains. Using non-invasive brain stimulation to modulate cortical excitability prior to practice could enhance the effects of practice and provide greater returns on the investment of time and effort. However, determining which cortical area to target is not trivial...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28608227/bimodality-of-stable-and-plastic-traits-in-plants
#20
Josef Fisher, Elad Bensal, Dani Zamir
We discovered an unexpected mode of bimodal distribution of stable and plastic traits, which was consistent for homologous traits of 32 varieties of seven species both in well-irrigated fields and dry conditions. We challenged archived genetic mapping data for 36 fruit, seed, flower and yield traits in tomato and found an unexpected bimodal distribution in one measure of trait variability, the mean coefficient of variation, with some traits being consistently more variable than others. To determine the degree of conservation of this distribution among higher plants, we compared 18 homologous phenotypes, including yield and seed production, across different crop species grown in a common 'crop garden' experiment...
June 12, 2017: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
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