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https://www.readbyqxmd.com/read/28214661/contingent-self-worth-moderates-the-relationship-between-school-stressors-and-psychological-stress-responses
#1
Kenichiro Ishizu
This study examined the moderating role of contingent self-worth on the relationships between school stressors and psychological stress responses among Japanese adolescents. A total of 371 Japanese junior high school students (184 boys and 187 girls, Mage = 12.79 years, SD = 0.71) completed the Japanese version of the Self-Worth Contingency Questionnaire and a mental health checklist at two points separated by a two-month interval. Hierarchical multiple regression analyses were then used to determine whether contingent self-worth moderated the relationship between school stressors and psychological stress responses...
February 16, 2017: Journal of Adolescence
https://www.readbyqxmd.com/read/28214530/automaton-model-of-protein-dynamics-of-conformational-and-functional-states
#2
REVIEW
Andrei Khrennikov, Ekaterina Yurova
In this conceptual paper we propose to explore the analogy between ontic/epistemic description of quantum phenomena and interrelation between dynamics of conformational and functional states of proteins. Another new idea is to apply theory of automata to model the latter dynamics. In our model protein's behavior is modeled with the aid of two dynamical systems, ontic and epistemic, which describe evolution of conformational and functional states of proteins, respectively. The epistemic automaton is constructed from the ontic automaton on the basis of functional (observational) equivalence relation on the space of ontic states...
February 15, 2017: Progress in Biophysics and Molecular Biology
https://www.readbyqxmd.com/read/28214491/relationship-between-patient-reported-symptoms-limitations-in-daily-activities-and-psychological-impact-in-varicose-veins
#3
Rajiv Mallick, Brajesh Kumar Lal, Claire Daugherty
OBJECTIVE: The objective of this study was to evaluate the relationship between patient-reported symptoms, functional limitations, and psychological impact of varicose veins (VVs) vs pathophysiologic mechanism, incorporating demographic and behavioral factors. METHODS: We conducted a pooled analysis from two clinical studies (Efficacy and Safety Study of Polidocanol Injectable Foam for the Treatment of Saphenofemoral Junction Incompetence [VANISH-1] and Polidocanol Endovenous Microfoam Versus Vehicle for the Treatment of Saphenofemoral Junction Incompetence [VANISH-2]) in patients with VVs (superficial venous reflux only)...
March 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/28214341/angiopoietin-2-enhances-osteogenic-differentiation-of-bone-marrow-stem-cells
#4
Mi-Lan Kang, Eun-Ah Kim, Se-Young Jeong, Gun-Il Im
Our previous studies revealed that co-transplantation of bone marrow stem cells (BMSCs) and adipose-derived stem cells (ADSCs) can enhance bone regeneration and angiogenesis. However, it is unclear which genes are involved in the regulation of osteogenesis and/or angiogenesis during the co-culturing of BMSCs and ADSCs. The expression patterns of genes associated with osteogenesis and/or angiogenesis were analyzed in osteogenesis-induced BMSCs and ADSCs using an oligonucleotide microarray. Significant difference in the expression patterns of several genes were identified from hierarchical clustering and analyzed on co-cultured BMSCs and ADSCs...
February 18, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28213213/titanium-iv-ion-modified-covalent-organic-frameworks-for-specific-enrichment-of-phosphopeptides
#5
Heping Wang, Fenglong Jiao, Fangyuan Gao, Yayao Lv, Qiong Wu, Yan Zhao, Yehua Shen, Yangjun Zhang, Xiaohong Qian
To date, plenty of new alternative materials for phosphopeptides enrichment prior to mass spectrometry (MS) analysis appear, especially immobilized metal ion affinity chromatography (IMAC) materials. The variable combinations with different metal ions, chelating ligands and solid supports offer full of optionality for IMAC. However, further improvement was predicted by the tedious and complex synthetic process. In this work, a novel covalent organic framework (COF)-based IMAC material (denoted TpPa-2-Ti(4+)) was prepared simply by direct immobilizing Ti (IV) into TpPa-2 COFs without any extra chelating ligands...
May 1, 2017: Talanta
https://www.readbyqxmd.com/read/28213149/high-electrocapacitive-performance-of-bowl-like-monodispersed-porous-carbon-nanoparticles-prepared-with-an-interfacial-self-assembly-process
#6
Shuxia Zhang, Qiang Weng, Fengqi Zhao, Hongxu Gao, Pei Chen, Xinbing Chen, Zhongwei An
Bowl-like monodispersed porous carbon nanoparticles (BMPCNs) have been successfully prepared with a facile and scalable approach, and the as-prepared BMPCNs are examined thoroughly by various physical characterizations. Physical measurements display that BMPCNs have the high surface area (1255m(2)g(-1)), hierarchical porosity, a certain amount of oxygen-containing groups and high graphitization degree. These unique structure features endow BMPCNs with a high capacitance (281Fg(-1) at 0.5Ag(-1)), excellent rate capability (209Fg(-1) at 50Ag(-1)), and outstanding cycling stability (94...
October 27, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28213114/hierarchical-control-of-procedural-and-declarative-category-learning-systems
#7
Benjamin O Turner, Matthew J Crossley, F Gregory Ashby
Substantial evidence suggests that human category learning is governed by the interaction of multiple qualitatively distinct neural systems. In this view, procedural memory is used to learn stimulus-response associations, and declarative memory is used to apply explicit rules and test hypotheses about category membership. However, much less is known about the interaction between these systems: how is control passed between systems as they interact to influence motor resources? Here, we used fMRI to elucidate the neural correlates of switching between procedural and declarative categorization systems...
February 14, 2017: NeuroImage
https://www.readbyqxmd.com/read/28213113/a-variational-bayesian-inference-method-for-parametric-imaging-of-pet-data
#8
M Castellaro, G Rizzo, M Tonietto, M Veronese, F E Turkheimer, M A Chappell, A Bertoldo
In dynamic Positron Emission Tomography (PET) studies, compartmental models provide the richest information on the tracer kinetics of the tissue. Inverting such models at the voxel level is however quite challenging due to the low signal-to-noise ratio of the time activity curves. In this study, we propose the use of a Variational Bayesian (VB) approach to efficiently solve this issue and thus obtain robust quantitative parametric maps. VB was adapted to the non-uniform noise distribution of PET data. Moreover, we propose a novel hierarchical scheme to define the model parameter priors directly from the images in case such information are not available from the literature, as often happens with new PET tracers...
February 14, 2017: NeuroImage
https://www.readbyqxmd.com/read/28212446/evaluation-of-university-scientific-research-ability-based-on-the-output-of-sci-tech-papers-a-d-ahp-approach
#9
Fan Zong, Lifang Wang
University scientific research ability is an important indicator to express the strength of universities. In this paper, the evaluation of university scientific research ability is investigated based on the output of sci-tech papers. Four university alliances from North America, UK, Australia, and China, are selected as the case study of the university scientific research evaluation. Data coming from Thomson Reuters InCites are collected to support the evaluation. The work has contributed new framework to the issue of university scientific research ability evaluation...
2017: PloS One
https://www.readbyqxmd.com/read/28212444/sumo-modification-of-a-heterochromatin-histone-demethylase-jmjd2a-enables-viral-gene-transactivation-and-viral-replication
#10
Wan-Shan Yang, Mel Campbell, Pei-Ching Chang
Small ubiquitin-like modifier (SUMO) modification of chromatin has profound effects on transcription regulation. By using Kaposi's sarcoma associated herpesvirus (KSHV) as a model, we recently demonstrated that epigenetic modification of viral chromatin by SUMO-2/3 is involved in regulating gene expression and viral reactivation. However, how this modification orchestrates transcription reprogramming through targeting histone modifying enzymes remains largely unknown. Here we show that JMJD2A, the first identified Jumonji C domain-containing histone demethylase, is the histone demethylase responsible for SUMO-2/3 enrichment on the KSHV genome during viral reactivation...
February 17, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28212350/a-hierarchical-framework-combining-motion-and-feature-information-for-infrared-visible-video-registration
#11
Xinglong Sun, Tingfa Xu, Jizhou Zhang, Xiangmin Li
In this paper, we propose a novel hierarchical framework that combines motion and feature information to implement infrared-visible video registration on nearly planar scenes. In contrast to previous approaches, which involve the direct use of feature matching to find the global homography, the framework adds coarse registration based on the motion vectors of targets to estimate scale and rotation prior to matching. In precise registration based on keypoint matching, the scale and rotation are used in re-location to eliminate their impact on targets and keypoints...
February 16, 2017: Sensors
https://www.readbyqxmd.com/read/28212347/molecularly-imprinted-sol-gel-based-qcm-sensor-arrays-for-the-detection-and-recognition-of-volatile-aldehydes
#12
Chuanjun Liu, Bartosz Wyszynski, Rui Yatabe, Kenshi Hayashi, Kiyoshi Toko
The detection and recognition of metabolically derived aldehydes, which have been identified as important products of oxidative stress and biomarkers of cancers; are considered as an effective approach for early cancer detection as well as health status monitoring. Quartz crystal microbalance (QCM) sensor arrays based on molecularly imprinted sol-gel (MISG) materials were developed in this work for highly sensitive detection and highly selective recognition of typical aldehyde vapors including hexanal (HAL); nonanal (NAL) and bezaldehyde (BAL)...
February 16, 2017: Sensors
https://www.readbyqxmd.com/read/28212112/cancer-as-robust-intrinsic-state-shaped-by-evolution-a-key-issues-review
#13
Ruoshi Yuan, Xiaomei Zhu, Gaowei Wang, Site Li, Ping Ao
Cancer is a complex disease: its pathology cannot be properly understood in terms of independent players-genes, proteins, molecular pathways, or their simple combinations. This is similar to many-body physics of a condensed phase that many important properties are not determined by a single atom or molecule. The rapidly accumulating large 'omics' data also require a new mechanistic and global underpinning to organize for rationalizing cancer complexity. A unifying and quantitative theory was proposed by some of the present authors that cancer is a robust state formed by the endogenous molecular-cellular network, which is evolutionarily built for the developmental processes and physiological functions...
February 17, 2017: Reports on Progress in Physics
https://www.readbyqxmd.com/read/28212087/dual-deep-network-for-visual-tracking
#14
Zhizhen Chi, Hongyang Li, Huchuan Lu, Minghsuan Yang
Visual tracking addresses the problem of identifying and localizing an unknown target in a video given the target specified by a bounding box in the first frame. In this paper, we propose a dual network to better utilize features among layers for visual tracking. It is observed that features in higher layers encode semantic context while its counterparts in lower layers are sensitive to discriminative appearance. Thus we exploit the hierarchical features in different layers of a deep model and design a dual structure to obtain better feature representation from various streams, which is rarely investigated in previous work...
February 15, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28211944/bayesian-response-adaptive-designs-for-basket-trials
#15
Steffen Ventz, William T Barry, Giovanni Parmigiani, Lorenzo Trippa
We develop a general class of response-adaptive Bayesian designs using hierarchical models, and provide open source software to implement them. Our work is motivated by recent master protocols in oncology, where several treatments are investigated simultaneously in one or multiple disease types, and treatment efficacy is expected to vary across biomarker-defined subpopulations. Adaptive trials such as I-SPY-2 (Barker et al., 2009) and BATTLE (Zhou et al., 2008) are special cases within our framework. We discuss the application of our adaptive scheme to two distinct research goals...
February 17, 2017: Biometrics
https://www.readbyqxmd.com/read/28211937/patterns-of-computed-tomography-surveillance-in-survivors-of-colorectal-cancer-at-veterans-health-administration-facilities
#16
Amikar Sehdev, Eric A Sherer, Siu L Hui, Jingwei Wu, David A Haggstrom
BACKGROUND: Annual computed tomography (CT) scans are a component of the current standard of care for the posttreatment surveillance of survivors of colorectal cancer (CRC) after curative-intent resection. The authors conducted a retrospective study with the primary aim of assessing patient, physician, and organizational characteristics associated with the receipt of CT surveillance among veterans. METHODS: The Department of Veterans Affairs Central Cancer Registry was used to identify patients diagnosed with AJCC collaborative stage I to III CRC between 2001 and 2009...
February 17, 2017: Cancer
https://www.readbyqxmd.com/read/28211893/superior-adsorption-and-photoinduced-carries-transfer-behaviors-of-dandelion-shaped-bi2s3-mos2-experiments-and-theory
#17
Mengjiao Li, Junyong Wang, Peng Zhang, Qinglin Deng, Jinzhong Zhang, Kai Jiang, Zhigao Hu, Junhao Chu
The enhanced light-harvesting capacity and effective separation of photogenerated carriers in fantastic hierarchical heterostructures enjoy striking attention for potential applications in the field of solar cells and photocatalysis. A three-dimensional (3D) dandelion-shaped hierarchical Bi2S3 microsphere compactly decorated with wing-shaped few layered MoS2 lamella (D-BM) was fabricated via a facile hydrothermal self-assembly process. Especially, polyethylene glycol (PEG) has been proven as the vital template to form D-BM microsphere...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28211823/symptom-severity-and-life-satisfaction-in-brain-injury-the-mediating-role-of-disability-acceptance-and-social-self-efficacy
#18
Nicole Ditchman, Connie Sung, Amanda B Easton, Kristina S Johnson, Elisabeth Batchos
BACKGROUND: Although the negative impact of symptom severity on subjective well-being outcomes has been established among individuals with brain injury, the mediating and protective role that positive human traits might have on this relationship has not been adequately explored. OBJECTIVE: The purpose of this study was to examine the impact of social self-efficacy and disability acceptance on the relationship between symptom severity and life satisfaction among individuals with brain injury...
February 15, 2017: NeuroRehabilitation
https://www.readbyqxmd.com/read/28211729/stochastic-dynamics-through-hierarchically-embedded-markov-chains
#19
Vítor V Vasconcelos, Fernando P Santos, Francisco C Santos, Jorge M Pacheco
Studying dynamical phenomena in finite populations often involves Markov processes of significant mathematical and/or computational complexity, which rapidly becomes prohibitive with increasing population size or an increasing number of individual configuration states. Here, we develop a framework that allows us to define a hierarchy of approximations to the stationary distribution of general systems that can be described as discrete Markov processes with time invariant transition probabilities and (possibly) a large number of states...
February 3, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28211366/l-cysteine-assisted-synthesis-of-hierarchical-nis2-hollow-spheres-supported-carbon-nitride-as-photocatalysts-with-enhanced-lifetime
#20
Chengzhang Zhu, Zhifeng Jiang, Linlin Chen, Kun Qian, Jimin Xie
Novel hierarchical NiS2 hollow spheres modified by graphite-like carbon nitride were prepared using a facile L-cysteine-assisted solvothermal route. The NiS2/g-C3N4 composites exhibited excellent photocatalytic efficiency in rhodamine B, methyl orange and ciprofloxacin degradation as compared to single g-C3N4 and NiS2, which could be due to the synergistic effects of the unique hollow sphere-like structure, strong visible-light absorption and increased separation rate of the photoinduced electron-hole pairs at the intimate interface of heterojunctions...
March 17, 2017: Nanotechnology
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