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https://www.readbyqxmd.com/read/28822313/a-selective-glucose-sensor-based-on-direct-oxidation-on-a-bimetal-catalyst-with-a-molecular-imprinted-polymer
#1
Seong Je Cho, Hui-Bog Noh, Mi-Sook Won, Chul-Ho Cho, Kwang Bok Kim, Yoon-Bo Shim
A selective nonenzymatic glucose sensor was developed based on the direct oxidation of glucose on hierarchical CuCo bimetal-coated with a glucose-imprinted polymer (GIP). Glucose was introduced into the GIP composed of Nafion and polyurethane along with aminophenyl boronic acid (APBA), which was formed on the bimetal electrode formed on a screen-printed electrode. The extraction of glucose from the GIP allowed for the selective permeation of glucose into the bimetal electrode surface for oxidation. The GIP-coated bimetal sensor probe was characterized using electrochemical and surface analytical methods...
August 10, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28822251/design-of-3d-mno2-carbon-sphere-composite-for-the-catalytic-oxidation-and-adsorption-of-elemental-mercury
#2
Haomiao Xu, Jinping Jia, Yongfu Guo, Zan Qu, Yong Liao, Jiangkun Xie, Wenfeng Shangguan, Naiqiang Yan
Three-dimensional (3D) MnO2/Carbon Sphere (MnO2/CS) composite was synthesized from zero-dimensional carbon spheres and one-dimensional α-MnO2 using hydrothermal method. The hierarchical MnO2/CS composite was applied for the catalytic oxidation and adsorption of elemental mercury (Hg(0)) from coal-fired flue gas. The characterization results indicated that this composite exhibits a 3D urchin morphology. Carbon spheres act as the core and α-MnO2 nano-rods grew on the surface of carbon spheres. This 3D hierarchical structure benefits the enlargement of surface areas and pore volumes...
August 8, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28821908/predicting-homeless-people-s-perceived-health-after-entering-the-social-relief-system-in-the-netherlands
#3
Jorien van der Laan, Barbara van Straaten, Sandra N Boersma, Gerda Rodenburg, Dike van de Mheen, Judith R L M Wolf
OBJECTIVES: We explored whether changes in the perceived health of homeless people after entering the social relief system (SRS) in The Netherlands were predicted by housing, income, hours of work, social support, unmet care needs, arrests, physical and mental health, substance use, and experiences of autonomy, competence and relatedness, in addition to perceived health at baseline, demographics, suspected intellectual disability, the duration of homelessness and the company of children in the shelter facility...
August 18, 2017: International Journal of Public Health
https://www.readbyqxmd.com/read/28821851/mass-production-of-bulk-artificial-nacre-with-excellent-mechanical-properties
#4
Huai-Ling Gao, Si-Ming Chen, Li-Bo Mao, Zhao-Qiang Song, Hong-Bin Yao, Helmut Cölfen, Xi-Sheng Luo, Fu Zhang, Zhao Pan, Yu-Feng Meng, Yong Ni, Shu-Hong Yu
Various methods have been exploited to replicate nacre features into artificial structural materials with impressive structural and mechanical similarity. However, it is still very challenging to produce nacre-mimetics in three-dimensional bulk form, especially for further scale-up. Herein, we demonstrate that large-sized, three-dimensional bulk artificial nacre with comprehensive mimicry of the hierarchical structures and the toughening mechanisms of natural nacre can be facilely fabricated via a bottom-up assembly process based on laminating pre-fabricated two-dimensional nacre-mimetic films...
August 18, 2017: Nature Communications
https://www.readbyqxmd.com/read/28821680/cortical-representations-of-speech-in-a-multi-talker-auditory-scene
#5
Krishna C Puvvada, Jonathan Z Simon
The ability to parse a complex auditory scene into perceptual objects is facilitated by a hierarchical auditory system. Successive stages in the hierarchy transform an auditory scene of multiple overlapping sources, from peripheral tonotopically-based representations in the auditory nerve, into perceptually distinct auditory-objects based representation in auditory cortex. Here, using magneto-encephalo-graphy (MEG) recordings from human subjects, both men and women, we investigate how a complex acoustic scene consisting of multiple speech sources is represented in distinct hierarchical stages of auditory cortex...
August 18, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28821662/visual-receptive-field-heterogeneity-and-functional-connectivity-of-adjacent-neurons-in-primate-fronto-parietal-association-cortices
#6
Pooja Viswanathan, Andreas Nieder
The basic organization principles of the primary visual cortex (V1) are commonly assumed to also hold in the association cortex such that neurons within a cortical column share functional connectivity patterns and represent the same region of the visual field. We mapped the visual receptive fields (RFs) of neurons recorded at the same electrode in the ventral intraparietal area (VIP) and the lateral prefrontal cortex (PFC) of rhesus monkeys. We report that the spatial characteristics of visual receptive fields between adjacent neurons differed considerably, with increasing heterogeneity from VIP to PFC...
August 11, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28821650/feedback-signal-from-motoneurons-influences-a-rhythmic-pattern-generator
#7
Horacio G Rotstein, Elisa Schneider, Lidia Szczupak
Motoneurons are not mere output units of neuronal circuits that control motor behavior, but participate in pattern generation. Research on the circuit that controls the crawling motor behavior in leeches indicated that motoneurons participate as modulators of this rhythmic motor pattern. Crawling results from successive bouts of elongation and contraction of the whole leech body. In the isolated segmental ganglia dopamine can induce a rhythmic antiphasic activity of the motoneurons that control contraction (DE-3 motoneurons) and elongation (CV motoneurons)...
August 16, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28821084/green-synthesis-of-oriented-xanthan-gum-graphene-oxide-hybrid-aerogels-for-water-purification
#8
Shunli Liu, Fang Yao, Olayinka Oderinde, Zhihong Zhang, Guodong Fu
Three-dimensional xanthan gum (XG)/graphene oxide (GO) hybrid aerogels were fabricated by ice crystal templating without using chemical modifiers. The hybrid aerogels were prepared by the stirring of xanthan gum-graphene oxide hybrid solution, followed by freezing at low temperature and finally by freeze-drying. The whole preparation could be completed within 12h without producing any contamination and thus considered a fast, simple, economical, and green method for aerogel fabrication. XG/GO hybrid aerogels possessed different hierarchical pore structures because of various freezing temperatures...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28820790/associations-of-immigration-transition-to-cardiovascular-symptoms-experienced-in-menopausal-transition
#9
Eun-Ok Im, Young Ko, Eunice Chee, Wonshik Chee
The purpose of this study was to explore the associations of immigration transition to cardiovascular symptoms among 4 major racial/ethnic groups of 1054 midlife women in the United States. This was a secondary analysis of the data from 2 large national survey studies. The instruments included questions on background characteristics and immigration transition and the Cardiovascular Symptom Index for Midlife Women. The data were analyzed using inferential statistics including hierarchical multiple regressions...
October 2017: Family & Community Health
https://www.readbyqxmd.com/read/28820677/comparing-measures-of-general-and-abdominal-adiposity-as-predictors-of-blood-pressure-in-college-students
#10
Demetrius A Abshire, Gia Mudd-Martin, Debra K Moser, Terry A Lennie
OBJECTIVE: To compare anthropometric measures of body mass index (BMI), waist circumference (WC), waist-to-height ratio (WHtR), and sagittal abdominal diameter (SAD) as predictors of blood pressure in college students. PARTICIPANTS: Students (N = 116) were recruited from November 2012 through May 2014 at an urban university and rural community colleges. METHODS: Students underwent a brief physical examination during which anthropometric measures were obtained and blood pressure was measured...
August 18, 2017: Journal of American College Health: J of ACH
https://www.readbyqxmd.com/read/28820618/college-women-s-responses-to-a-celebrity-health-disclosure
#11
Julia H Drizin, Vanessa L Malcarne, Melody K Schiaffino, Kristen J Wells
Celebrities can have a powerful influence on people's health-related attitudes and behaviors, often by publicly disclosing their own personal health decisions. In May 2013, Angelina Jolie, an internationally recognized actress, director, and author, wrote an op-ed for the New York Times disclosing her decision to undergo a prophylactic double mastectomy to reduce her risk of breast cancer after learning that she carried the BRCA1 gene mutation. This cross-sectional study examined whether exposure to Angelina Jolie and her mastectomy disclosure and parasocial involvement (PSI) with Angelina Jolie were related to female college students' perceived risk of breast cancer and breast cancer screening intentions...
August 18, 2017: Health Communication
https://www.readbyqxmd.com/read/28820575/mbg-modified-%C3%AE-tcp-scaffold-promotes-mesenchymal-stem-cells-adhesion-and-osteogenic-differentiation-via-fak-mapk-signaling-pathway
#12
Yutong Liu, Yifan Ma, Jing Zhang, Qing Xie, Zi Wang, Shuang Yu, Yuan Yuan, Changsheng Liu
β-TCP scaffold has been widely used as bone graft substitutes, but traditional PMMA molding method-induced undesirable mechanical strength and poor interconnectivity still have not addressed till now. In this study, a MBG-based PU foam templating method was developed to fabricate β-TCP scaffolds with desirable microtopography. The MBG gel, as both binder and modifier, prepared by modified sol-gel method with controlled viscosity is incorporated with β-TCP powder and thereafter is impregnated into PU foam...
August 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28820017/directive-and-nondirective-social-support-in-the-workplace-is-this-social-support-distinction-important-for-subjective-health-complaints-job-satisfaction-and-perception-of-job-demands-and-job-control
#13
Tone Langjordet Johnsen, Hege Randi Eriksen, Aage Indahl, Torill Helene Tveito
AIMS: Social support is associated with well-being and positive health outcomes. However, positive outcomes of social support might be more dependent on the way support is provided than the amount of support received. A distinction can be made between directive social support, where the provider resumes responsibility, and nondirective social support, where the receiver has the control. This study examined the relationship between directive and nondirective social support, and subjective health complaints, job satisfaction and perception of job demands and job control...
August 1, 2017: Scandinavian Journal of Public Health
https://www.readbyqxmd.com/read/28819935/plasma-biomarkers-of-inflammation-reflect-seizures-and-hemorrhagic-activity-of-cerebral-cavernous-malformations
#14
Romuald Girard, Hussein A Zeineddine, Maged D Fam, Anoop Mayampurath, Ying Cao, Changbin Shi, Robert Shenkar, Sean P Polster, Michael Jesselson, Ryan Duggan, Abdul-Ghani Mikati, Gregory Christoforidis, Jorge Andrade, Kevin J Whitehead, Dean Y Li, Issam A Awad
The clinical course of cerebral cavernous malformations (CCMs) is highly variable. Based on recent discoveries implicating angiogenic and inflammatory mechanisms, we hypothesized that serum biomarkers might reflect chronic or acute disease activity. This single-site prospective observational cohort study included 85 CCM patients, in whom 24 a priori chosen plasma biomarkers were quantified and analyzed in relation to established clinical and imaging parameters of disease categorization and severity. We subsequently validated the positive correlations in longitudinal follow-up of 49 subjects...
August 17, 2017: Translational Stroke Research
https://www.readbyqxmd.com/read/28819883/how-the-political-becomes-private-in-vitro-fertilization-and-the-catholic-church-in-poland
#15
Magdalena Radkowska-Walkowicz
The Polish debate on in vitro fertilization (IVF) is extremely heated and highly politicized. The hierarchs of the Catholic vehemently oppose the use of IVF. In this text, I present the Church's approach to IVF. Basing on the documentary film, Three Conversations about Life, and ethnographic research, as well as an analysis of Vatican documents and official statements of Polish bishops, I show how the positions of clergy might influence private lives. I indicate series of tensions associated with the "politics of morality" of the Catholic Church and the daily lives of people, who have children thanks to IVF...
August 17, 2017: Journal of Religion and Health
https://www.readbyqxmd.com/read/28819188/highly-stabilized-core-satellite-gold-nanoassemblies-in-vivo-dna-directed-self-assembly-peg-modification-and-cell-imaging
#16
Liangfeng Tang, Guiping Yu, Lishan Tan, Min Li, Xiulong Deng, Jianyu Liu, Aiqing Li, Xuandi Lai, Jianqiang Hu
Au nanoparticles (NPs) have important applications in bioimaging, clinical diagnosis and even therapy due to its water-solubility, easy modification and drug-loaded capability, however, easy aggregation of Au NPs in normal saline and serum greatly limits its applications. In this work, highly stabilized core-satellite Au nanoassemblies (CSAuNAs) were constructed by a hierarchical DNA-directed self-assembly strategy, in which satellite Au NPs number could be effectively tuned through varying the ratios of core-AuNPs-ssDNA and satellite-AuNPs-ssDNAc...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818653/robust-and-thermal-healing-superhydrophobic-surfaces-by-spin-coating-of-polydimethylsiloxane
#17
Mengying Long, Shan Peng, Wanshun Deng, Xiaojun Yang, Kai Miao, Ni Wen, Xinrui Miao, Wenli Deng
HYPOTHESIS: Superhydrophobic surfaces easily lose their excellent water-repellency after damages, which limit their broad applications in practice. Thus, the fabrication of superhydrophobic surfaces with excellent durability and thermal healing should be taken into consideration. EXPERIMENTS: In this work, robust superhydrophobic surfaces with thermal healing were successfully fabricated by spin-coating method. To achieve superhydrophobicity, cost-less and fluoride-free polydimethylsiloxane (PDMS) was spin-coated on rough aluminum substrates...
August 10, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28818112/prevalence-and-its-associated-psychological-variables-of-symptoms-of-depression-and-anxiety-among-ovarian-cancer-patients-in-china-a-cross-sectional-study
#18
Chun Li Liu, Li Liu, Yi Zhang, Xiao Ze Dai, Hui Wu
BACKGROUND: It is well known that cancer patients tend to have high levels of perceived stress and symptoms of depression and anxiety. However, there is less study on the association between perceived stress and symptoms of depression and anxiety among ovarian cancer patients in China. And the mediating effect of hope and resilience needs to be further studied. In this study, we aim to examine the prevalence of depression and anxiety symptoms, to analyze the association between perceived stress and symptoms of depression and anxiety, and to test whether hope and resilience mediate the association of perceived stress with symptoms of depression and anxiety among Chinese patients with ovarian cancer...
August 17, 2017: Health and Quality of Life Outcomes
https://www.readbyqxmd.com/read/28818093/case-report-value-of-gene-expression-profiling-in-the-diagnosis-of-atypical-neuroblastoma
#19
Anne C Harttrampf, Qingrong Chen, Eva Jüttner, Julia Geiger, Gordon Vansant, Javed Khan, Udo Kontny
BACKGROUND: Nephroblastoma and neuroblastoma belong to the most common abdominal malignancies in childhood. Similarities in the initial presentation may provide difficulties in distinguishing between these two entities, especially if unusual variations to prevalent patterns of disease manifestation occur. Because of the risk of tumor rupture, European protocols do not require biopsy for diagnosis, which leads to misdiagnosis in some cases. CASE PRESENTATION: We report on a 4½-year-old girl with a renal tumor displaying radiological and laboratory characteristics supporting the diagnosis of nephroblastoma...
August 17, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28818079/which-physical-and-social-environmental-factors-are-most-important-for-adolescents-cycling-for-transport-an-experimental-study-using-manipulated-photographs
#20
Hannah Verhoeven, Ariane Ghekiere, Jelle Van Cauwenberg, Delfien Van Dyck, Ilse De Bourdeaudhuij, Peter Clarys, Benedicte Deforche
BACKGROUND: Ecological models emphasize that cycling for transport is determined by an interplay between individual, physical and social environmental factors. The current study investigated (a) which physical and social environmental factors determine adolescents' preferences towards cycling for transport and (b) which individual, physical and social environmental factors are associated with their intention to actually cycle for transport. METHODS: An online questionnaire consisting of questions on individual and social environmental variables, and 15 choice-based conjoint tasks with manipulated photographs was completed by 882 adolescents (55...
August 17, 2017: International Journal of Behavioral Nutrition and Physical Activity
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