keyword
MENU ▼
Read by QxMD icon Read
search

Hierarchical

keyword
https://www.readbyqxmd.com/read/28636246/stretchable-electrochemical-sensor-for-inducing-and-monitoring-cell-mechanotransduction-in-real-time
#1
Yan-Ling Liu, Yu Qin, Zi-He Jin, Xue-Bo Hu, Miao-Miao Chen, Rong Liu, Christian Amatore, Wei-Hua Huang
Existing methods offer little direct and real-time information about stretch-triggered biochemical responses during cell mechanotransduction. Herein, we report a novel stretchable electrochemical sensor that takes advantage of a hierarchical percolation network of carbon nanotubes and gold nanotubes (CNTs- Au NTs). This hybrid nano-structure provides the sensor with excellent time-reproducible mechanical and electrochemical performances while granting very good cellular compatibility, making it perfectly apt to induce and monitor simultaneously transient biochemical signals...
June 21, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28635653/virtual-screening-against-phosphoglycerate-kinase-1-in-quest-of-novel-apoptosis-inhibitors
#2
Jie Xia, Bo Feng, Qianhang Shao, Yuhe Yuan, Xiang Simon Wang, Naihong Chen, Song Wu
Inhibition of apoptosis is a potential therapy to treat human diseases such as neurodegenerative disorders (e.g., Parkinson's disease), stroke, and sepsis. Due to the lack of druggable targets, it remains a major challenge to discover apoptosis inhibitors. The recent repositioning of a marketed drug (i.e., terazosin) as an anti-apoptotic agent uncovered a novel target (i.e., human phosphoglycerate kinase 1 (hPgk1)). In this study, we developed a virtual screening (VS) pipeline based on the X-ray structure of Pgk1/terazosin complex and applied it to a screening campaign for potential anti-apoptotic agents...
June 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28635525/the-role-of-prenatal-obstetric-and-post-partum-factors-in-the-parenting-stress-of-mothers-and-fathers-of-9-month-old-infants
#3
Karen Matvienko-Sikar, Gillian Murphy, Mike Murphy
INTRODUCTION: The aim of this paper was to examine the role of perinatal, obstetric and post partum factors on maternal and paternal stress. It will present the first examination of the role of prenatal, obstetric, post-partum, and demographic variables in parenting stress for mothers and fathers at 9 months. METHODS: Data from 6821 parental dyads of 9-month-old infants were extracted from the Growing Up in Ireland National Longitudinal Study of Children. Participants completed the Parental Stress Scale, the Dyadic Adjustment Scale, the Quality of Attachment Sub-scale from the Maternal and Paternal Postnatal Attachment Scales, and a single item health status question from the Short Form 12 Health Survey...
February 9, 2017: Journal of Psychosomatic Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28635505/social-inequalities-in-pure-tone-hearing-assessed-using-occupational-stratification-schemes
#4
Petra von Gablenz, Inga Holube
OBJECTIVE: The objective of this study is to analyse the performance of two occupational stratification approaches and the impact of social position on adult hearing. DESIGN: The prevalence of hearing impairment, pure-tone averages (PTA) and prevalence ratios (PR) for relative hearing loss, which focuses on the position of one's PTA in the age- and gender-specific distribution, were compared in groups defined by ISCO Skill Level and the International Socio-Economic Index (ISEI)...
March 1, 2017: International Journal of Audiology
https://www.readbyqxmd.com/read/28635441/the-extension-of-a-set-of-needs-led-mental-health-clusters-to-accommodate-people-accessing-uk-intellectual-disability-health-services
#5
Jon Painter, Liam Trevithick, Richard Hastings, Barry Ingham, Ashok Roy
BACKGROUND: A development of a needs-led mental health classification system based on the Health of the National Outcome Scales (HoNOS) has previously been developed. AIMS: To extend the needs-based mental health (MH) clusters to accommodate the additional needs of people accessing UK intellectual disabilities health services. METHOD: Hierarchical cluster analysis was performed on assessment data from 18 National Health Service (NHS) provider organisations...
March 2, 2017: Journal of Mental Health
https://www.readbyqxmd.com/read/28634777/healthy-and-unhealthy-food-prices-across-neighborhoods-and-their-association-with-neighborhood-socioeconomic-status-and-proportion-black-hispanic
#6
David M Kern, Amy H Auchincloss, Lucy F Robinson, Mark F Stehr, Genevieve Pham-Kanter
This paper evaluates variation in food prices within and between neighborhoods to improve our understanding of access to healthy foods in urbanized areas and potential economic incentives and barriers to consuming a higher-quality diet. Prices of a selection of healthier foods (dairy, fruit juice, and frozen vegetables) and unhealthy foods (soda, sweets, and salty snacks) were obtained from 1953 supermarkets across the USA during 2009-2012 and were linked to census block group socio-demographics. Analyses evaluated associations between neighborhood SES and proportion Black/Hispanic and the prices of healthier and unhealthy foods, and the relative price of healthier foods compared with unhealthy foods (healthy-to-unhealthy price ratio)...
June 20, 2017: Journal of Urban Health: Bulletin of the New York Academy of Medicine
https://www.readbyqxmd.com/read/28634305/data-driven-extraction-of-a-nested-model-of-human-brain-function
#7
Taylor Bolt, Jason S Nomi, B T Thomas Yeo, Lucina Q Uddin
Decades of cognitive neuroscience research have revealed two basic facts regarding task-driven brain activation patterns. First, distinct patterns of activation occur in response to different task demands. Second, a superordinate, dichotomous pattern of activation/de-activation, is common across a variety of task demands. We explore the possibility that a hierarchical model incorporates these two observed brain activation phenomena into a unifying framework. We apply a latent variable approach, exploratory bi-factor analysis, to a large set of human (both sexes) brain activation maps (n = 108) encompassing cognition, perception, action and emotion behavioral domains, to determine the potential existence of a nested structure of factors that underlies a variety of commonly observed activation patterns...
June 20, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28634162/linking-the-content-to-demographic-reach-of-online-advertising-of-electronic-nicotine-delivery-systems
#8
David S Timberlake, Dmitriy Nikitin, Jennifer Garcia-Cano, Samantha Cino, Margarita Savkina, Cornelia Pechmann
INTRODUCTION: Recent studies have separately examined the content and demographic reach of the advertising of electronic nicotine delivery systems (ENDS). No study to our knowledge has linked the two in investigating whether racial/ethnic groups are differentially exposed to the comparative messages conveyed in online ENDS advertisements. METHODS: 932 unique ENDS advertisements (6311 total), which were posted on 3435 websites between December, 2009 and October, 2015, were categorized as either comparative or non-comparative with respect to the traditional cigarette...
June 20, 2017: Tobacco Control
https://www.readbyqxmd.com/read/28634156/classifying-chinese-questions-related-to-health-care-posted-by-consumers-via-the-internet
#9
Haihong Guo, Xu Na, Li Hou, Jiao Li
BACKGROUND: In question answering (QA) system development, question classification is crucial for identifying information needs and improving the accuracy of returned answers. Although the questions are domain-specific, they are asked by non-professionals, making the question classification task more challenging. OBJECTIVE: This study aimed to classify health care-related questions posted by the general public (Chinese speakers) on the Internet. METHODS: A topic-based classification schema for health-related questions was built by manually annotating randomly selected questions...
June 20, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28634007/gene-expression-differences-between-ductal-carcinoma-in-situ-with-and-without-progression-to-invasive-breast-cancer
#10
Shusma C Doebar, Anieta M Sieuwerts, Vanja de Weerd, Hans Stoop, John W M Martens, Carolien H M van Deurzen
To understand the molecular alterations driving the progression of ductal carcinoma in situ (DCIS), we compared patients with pure DCIS and patients with DCIS and synchronous invasive breast cancer (IBC). Twelve patients with extensive pure DCIS were included as a representation of indolent lesions with limited invasive capacity. These cases were matched with 12 patients with a limited DCIS component and IBC, representing lesions with a high invasive potential. Matching included age and surrogate DCIS subtypes...
July 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28633678/variation-in-empiric-coverage-versus-detection-of-methicillin-resistant-staphylococcus-aureus-and-pseudomonas-aeruginosa-in-hospitalizations-for-community-onset-pneumonia-across-128-us-veterans-affairs-medical-centers
#11
Barbara E Jones, Kevin Antoine Brown, Makoto M Jones, Benedikt D Huttner, Tom Greene, Brian C Sauer, Karl Madaras-Kelly, Michael A Rubin, Matthew Bidwell Goetz, Matthew H Samore
OBJECTIVE To examine variation in antibiotic coverage and detection of resistant pathogens in community-onset pneumonia. DESIGN Cross-sectional study. SETTING A total of 128 hospitals in the Veterans Affairs health system. PARTICIPANTS Hospitalizations with a principal diagnosis of pneumonia from 2009 through 2010. METHODS We examined proportions of hospitalizations with empiric antibiotic coverage for methicillin-resistant Staphylococcus aureus (MRSA) and Pseudomonas aeruginosa (PAER) and with initial detection in blood or respiratory cultures...
June 21, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/28633558/an-introduction-to-bayesian-statistics-in-health-psychology
#12
Sarah Depaoli, Holly M Rus, James P Clifton, Rens van de Schoot, Jitske Tiemensma
The aim of the current article is to provide a brief introduction to Bayesian statistics within the field of Health Psychology. Bayesian methods are increasing in prevalence in applied fields, and they have been shown in simulation research to improve the estimation accuracy of structural equation models, latent growth curve (and mixture) models, and hierarchical linear models. Likewise, Bayesian methods can be used with small sample sizes since they do not rely on large sample theory. In this article, we discuss several important components of Bayesian statistics as they relate to health-based inquiries...
June 20, 2017: Health Psychology Review
https://www.readbyqxmd.com/read/28633060/childhood-adversity-and-cognitive-functioning-in-patients-with-major-depression
#13
Katharina Dannehl, Winfried Rief, Frank Euteneuer
OBJECTIVE: Major depression is often accompanied by deficits in cognitive functioning and lowered executive functions. However, not all depressed patients show impairments in these domains. The aim of this study was to examine whether different kinds of childhood adversity might account for cognitive deficits in patients with major depression. METHODS: Ninety-one patients with major depression (DSM-IV) and 40 healthy controls completed a neuropsychological test battery assessing memory, processing speed and executive functions...
June 17, 2017: Child Abuse & Neglect
https://www.readbyqxmd.com/read/28632777/immunohistochemiocal-subtyping-using-ck20-and-ck5-can-identify-urothelial-carcinomas-of-the-upper-urinary-tract-with-a-poor-prognosis
#14
Danijel Sikic, Bastian Keck, Sven Wach, Helge Taubert, Bernd Wullich, Peter J Goebell, Andreas Kahlmeyer, Peter Olbert, Philipp Isfort, Wilhelm Nimphius, Arndt Hartmann, Johannes Giedl
PURPOSE: Genome-wide analyses revealed basal and luminal subtypes of urothelial carcinomas of the bladder. It is unknown if this subtyping can also be applied to upper tract urothelial carcinomas. MATERIALS AND METHODS: Tumor samples from 222 patients with upper tract urothelial carcinomas who were treated with radical nephroureterectomy were analyzed for the expression of seven basal/luminal immunohistochemical markers (CK5, EGFR, CD44, CK20, p63, GATA3, FOXA1)...
2017: PloS One
https://www.readbyqxmd.com/read/28632589/emergency-department-visits-following-elective-total-hip-and-knee-replacement-surgery-identifying-gaps-in-continuity-of-care
#15
Micaela A Finnegan, Robyn Shaffer, Austin Remington, Jereen Kwong, Catherine Curtin, Tina Hernandez-Boussard
BACKGROUND: Major joint replacement surgical procedures are common, elective procedures with a care episode that includes both inpatient readmissions and postoperative emergency department (ED) visits. Inpatient readmissions are well studied; however, to our knowledge, little is known about ED visits following these procedures. We sought to characterize 30-day ED visits following a major joint replacement surgical procedure. METHODS: We used administrative records from California, Florida, and New York, from 2010 through 2012, to identify adults undergoing total knee and hip arthroplasty...
June 21, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28632386/synthesis-of-hierarchically-structured-hybrid-materials-by-controlled-self-assembly-of-metal-organic-framework-with-mesoporous-silica-for-co2-adsorption
#16
Chong Chen, Bingxue Li, Lijin Zhou, Zefeng Xia, Nengjie Feng, Jing Ding, Lei Wang, Hui Wan, Guofeng Guan
The HKUST-1@SBA-15 composites with hierarchical pore structure were constructed by in situ self-assembly of metal-organic framework (MOF) with mesoporous silica. The structure directing role of SBA-15 had an obvious impact on the growth of MOF crystals, which in turn affected the morphologies and structural properties of the composites. The pristine HKUST-1 and the composites with different contents of SBA-15 were characterized by XRD, N2 adsorption-desorption, SEM, TEM, FT-IR, TG, XPS, and CO2-TPD techniques...
June 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28632272/interfacial-synthesis-of-a-three-dimensional-hierarchical-mos2-ns-ag-np-nanocomposite-as-a-sers-nanosensor-for-ultrasensitive-thiram-detection
#17
Xiu Liang, Yi-Shuo Wang, Ting-Ting You, Xiao-Juan Zhang, Nan Yang, Guang-Sheng Wang, Peng-Gang Yin
Interfacial self-assembly of ordered nanostructures at oil-water interfaces towards the fabrication of nanofilms has attracted the interest of plenty of scientists, since its discovery in 2004. Herein, further developments have been achieved, and we report a new strategy for the synthesis of a three-dimensional (3D) hierarchical nanostructure, through an interfacial synthesis driven microemulsion process. Thus, the synthesis route has been simplified, with the rigorous experimental conditions of traditional compositing technology...
June 20, 2017: Nanoscale
https://www.readbyqxmd.com/read/28631974/personality-disorders-are-not-as-we-thought-hierarchical-factor-structure-at-the-criterion-level
#18
Ana Muñoz-Champel, Fernando Gutiérrez, Josep M Peri, Rafael Torrubia
The use of personality disorder (PD) categories persists, despite the evidence against them. An often overlooked reason for this is the fact that the true structure underlying the Diagnostic and Statistical Manual of Mental Disorders (DSM) taxonomy is still unknown: We cannot be certain which disorders are valid, and which ones are arbitrary mixtures of heterogeneous traits. To address this gap, we factor analyzed the Personality Diagnostic Questionnaire (PDQ-4+; Hyler, 1994 ) at the criterion level in a mixed clinical and nonclinical sample of 2,519 individuals...
February 22, 2017: Journal of Personality Assessment
https://www.readbyqxmd.com/read/28631839/natural-variability-of-biochemical-biomarkers-in-the-macro-zoobenthos-dependence-on-life-stage-and-environmental-factors
#19
Lucia Scarduelli, Roberto Giacchini, Paolo Parenti, Sonia Migliorati, Agnese Maria Di Brisco, Marco Vighi
Biomarkers are widely used in ecotoxicology as indicators of exposure to toxicants. However, their ability to provide ecologically relevant information remains controversial. One of the major problems is understanding if the measured responses are determined by stress factors or lie within the natural variability range. In a previous work, the natural variability of enzymatic levels in invertebrates sampled in pristine rivers was proved to be relevant across both space and time. In this work, the experimental design was improved by considering different life stages of the selected taxa and by measuring more environmental parameters...
June 20, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28631375/3d-mimicry-of-native-tissue-fiber-architecture-guides-tendon-derived-cells-and-adipose-stem-cells-into-artificial-tendon-constructs
#20
Mariana Laranjeira, Rui M A Domingues, Raquel Costa-Almeida, Rui L Reis, Manuela E Gomes
Tendon and ligament (T/L) function is intrinsically related with their unique hierarchically and anisotropically organized extracellular matrix. Their natural healing capacity is, however, limited. Here, continuous and aligned electrospun nanofiber threads (CANT) based on synthetic/natural polymer blends mechanically reinforced with cellulose nanocrystals are produced to replicate the nanoscale collagen fibrils grouped into microscale collagen fibers that compose the native T/L. CANT are then incrementally assembled into 3D hierarchical scaffolds, resulting in woven constructions, which simultaneously mimic T/L nano-to-macro architecture, nanotopography, and nonlinear biomechanical behavior...
June 20, 2017: Small
keyword
keyword
37429
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"