keyword
MENU ▼
Read by QxMD icon Read
search

Hierarchical

keyword
https://www.readbyqxmd.com/read/29667935/one-step-synthesis-of-sno-hierarchical-architectures-under-room-temperature-and-their-photocatalytic-properties
#1
Wenxiu Liu, Lili Yin, Rui Zhang, Hailian Yang, Jing Ma, Wenbin Cao
3D hierarchical SnO architectures were synthesized via a one-step dissolution-precipitation route under room temperature using SnCl22H2O and Na2CO3 as initial reagents. The morphology and size of the prepared SnO structures could be easily tailored by alternating the solvent from deionized water with absolute ethanol. The SEM observation shows that the prepared 3D SnO hierarchical architectures were consisted of nanosheets. And the size of the SnO hierarchical architectures could be effectively reduced from 4 - 10 μm to 1 - 2 μm when the solvent was changed from water to ethanol while the thickness of the assembling nanosheets will be reduced from 200 - 500 nm to 20 - 30 nm at the same time...
April 18, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29667605/hierarchical-layered-double-hydroxides-with-ag-nanoparticles-modification-for-ethanol-sensing
#2
Yuxiang Qin, Liping Wang, Xiaofei Wang
Layered double hydroxides (LDHs) are recently revealed to be promising in gas sensor application due to compositional flexibility and unique 2D-interlayer channel for gas diffusion and adsorption. This work demonstrates a kind of highly porous hierarchical LDHs containing Mg2+ and Al3+ (MgAl-LDHs) for ethanol-sensing at room temperature. The MgAl-LDHs with unique flower-like hierarchical structure and mesoporous interlayer were synthesized hydrothermally using sodium dodecyl sulfate (SDS) as soft template as well as intercalating agent...
April 18, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29667530/effects-of-developmental-age-on-symptom-reporting-and-neurocognitive-performance-in-youth-after-sports-related-concussion-compared-to-control-athletes
#3
Donna L Murdaugh, Kim E Ono, Sarah O Morris, Thomas G Burns
There is increased necessity to focus research on school-aged athletes with sports-related concussion (SRC). This study assessed differences in symptom reporting and neurocognitive performance in youth athletes who sustained a sports-related concussion. A total of 1345 concussed and 3529 nonconcussed athletes (ages 8-21) completed the Immediate Post-concussive Assessment and Cognitive Testing (ImPACT). Analyses of covariance were conducted in order to assess differences in neurocognitive performance and symptom reporting between the sports-related concussion and control groups across age ranges...
January 1, 2018: Journal of Child Neurology
https://www.readbyqxmd.com/read/29667325/a-host-configured-lithium-sulfur-cell-built-on-3d-nickel-photonic-crystal-with-superior-electrochemical-performances
#4
Shengxuan Lin, Yang Yan, Zihe Cai, Lin Liu, Xiaobin Hu
The insulator of the sulfur cathode and the easy dendrites growth of the lithium anode are the main barriers for lithium-sulfur cells in commercial application. Here, a 3D NPC@S/3D NPC@Li full cell is reported based on 3D hierarchical and continuously porous nickel photonic crystal (NPC) to solve the problems of sulfur cathode and lithium anode at the same time. In this case, the 3D NPC@S cathode can not only offer a fast transfer of electron and lithium ion, but also effectively prevent the dissolution of polysulfides and the tremendous volume change during cycling, and the 3D NPC@Li anode can efficiently inhibit the growth of lithium dendrites and volume expansion, too...
April 18, 2018: Small
https://www.readbyqxmd.com/read/29667162/metaunidec-high-throughput-deconvolution-of-native-mass-spectra
#5
Deseree J Reid, Jessica M Diesing, Matthew A Miller, Scott M Perry, Jessica A Wales, William R Montfort, Michael T Marty
The expansion of native mass spectrometry (MS) methods for both academic and industrial applications has created a substantial need for analysis of large native MS datasets. Existing software tools are poorly suited for high-throughput deconvolution of native electrospray mass spectra from intact proteins and protein complexes. The UniDec Bayesian deconvolution algorithm is uniquely well suited for high-throughput analysis due to its speed and robustness but was previously tailored towards individual spectra...
April 17, 2018: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/29667036/understanding-men-s-self-reported-sexual-interest-in-children
#6
Sandy K Wurtele, Dominique A Simons, Leah J Parker
A few studies have found that even in the general population, a minority of adults-men as well as women-report some sexual interest in a young age group. The purpose of the present study was to identify factors associated with self-reported sexual interest in children among a community-based sample of men. Using an online survey methodology, we examined the extent to which different types of childhood adversities (witnessing parental violence, sexual, physical, and emotional abuse), atypical childhood sexual experiences, and participants' self-reported likelihood of engaging in a variety of sexual behaviors (heightened sexual interest) were related to sexual interest in children (SIC) reported by a non-forensic/non-clinical sample of 173 men...
April 17, 2018: Archives of Sexual Behavior
https://www.readbyqxmd.com/read/29666600/the-temporal-prediction-of-stress-in-speech-and-its-relation-to-musical-beat-perception
#7
REVIEW
Eleonora J Beier, Fernanda Ferreira
While rhythmic expectancies are thought to be at the base of beat perception in music, the extent to which stress patterns in speech are similarly represented and predicted during on-line language comprehension is debated. The temporal prediction of stress may be advantageous to speech processing, as stress patterns aid segmentation and mark new information in utterances. However, while linguistic stress patterns may be organized into hierarchical metrical structures similarly to musical meter, they do not typically present the same degree of periodicity...
2018: Frontiers in Psychology
https://www.readbyqxmd.com/read/29666272/human-n-acetylglucosaminyltransferase-ii-substrate-recognition-uses-a-modular-architecture-that-includes-a-convergent-exosite
#8
Renuka Kadirvelraj, Jeong-Yeh Yang, Justin H Sanders, Lin Liu, Annapoorani Ramiah, Pradeep Kumar Prabhakar, Geert-Jan Boons, Zachary A Wood, Kelley W Moremen
Asn-linked oligosaccharides are extensively modified during transit through the secretory pathway, first by trimming of the nascent glycan chains and subsequently by initiating and extending multiple oligosaccharide branches from the trimannosyl glycan core. Trimming and branching pathway steps are highly ordered and hierarchal based on the precise substrate specificities of the individual biosynthetic enzymes. A key committed step in the synthesis of complex-type glycans is catalyzed by N -acetylglucosaminyltransferase II (MGAT2), an enzyme that generates the second GlcNAcβ1,2- branch from the trimannosyl glycan core using UDP-GlcNAc as the sugar donor...
April 16, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29665682/hierarchical-fe2o3-c-mno2-c-multi-shell-nanocomposites-for-high-performance-lithium-ion-battery-and-catalyst
#9
Yu Zhang, Qing Li, Jiwei Liu, Wenbin You, Fang Fang, Min Wang, Renchao Che
The Fe2O3@C@MnO2@C (FCMC) nanocomposites containing spindle-like Fe2O3 as a core and MnO2 nanosheets as a sandwiched shell and double carbon layers have been successfully prepared by a facile method. As anode materials of lithium ion batteries (LIBs), the cycling stability, rate performance and conductivity of the prepared FCMC are far beyond that of the carbon-free Fe2O3@MnO2 (FM) nanocomposites. The hierarchical structure with double layers of carbon effectively enhances the ion conductivity and electrochemical performance of transitional metal oxides, indicating that carbon in FCMC played an important role during lithium ion storage...
April 17, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29665441/nanorod-diameter-modulated-osteogenic-activity-of-hierarchical-micropore-nanorod-patterned-coatings-via-a-wnt-%C3%AE-catenin-pathway
#10
Jianhong Zhou, Lingzhou Zhao, Bo Li, Yong Han
Hierarchical micropore/nanorod-patterned strontium doped hydroxyapatite (Ca9 Sr1 (PO4 )6 (OH)2 , Sr1 -HA) structures (MNRs) with different nanorod diameters of about 30, 70 and 150 nm were coated on titanium, to investigate the effect of nanorod diameter on osteogenesis and the involved mechanism. Compared to micropore/nanogranule-patterned Sr1 -HA coating (MNG), MNRs gave rise to dramatically enhanced in vitro mesenchymal stem cell functions including osteogenic differentiation in the absence of osteogenic supplements and in vivo osseointegration related to the nanorod diameter with about 70 nm displaying the best effects...
April 14, 2018: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/29665325/a-gene-signature-associated-with-pten-activation-defines-good-prognosis-intermediate-risk-prostate-cancer-cases
#11
Chee W Ong, Pamela Maxwell, Muhammad A Alvi, Stephen McQuaid, David Waugh, Ian Mills, Manuel Salto-Tellez
Accurate identification of intermediate risk (Gleason 3 + 4 = 7) prostate cancer patients with low risk of disease progression is an unmet challenge in treatment decision making. Here we describe a gene signature that could guide clinicians in the selection of patients with intermediate stage clinically localized prostate cancer for active surveillance. We examined six major drivers of aggressive disease - PTEN, MYC, RB1, TP53, AURKA, AR - by immunohistochemistry in a focused (N = 69) cohort predominantly consisting of intermediate risk prostate cancer...
April 2018: Journal of Pathology. Clinical Research
https://www.readbyqxmd.com/read/29665285/hemostatic-and-absorbent-polyhipe-kaolin-composites-for-3d-printable-wound-dressing-materials
#12
Benjamin C Streifel, Jeffrey G Lundin, Allix M Sanders, Karli A Gold, Thomas S Wilems, Sierra J Williams, Elizabeth Cosgriff-Hernandez, James H Wynne
A novel hemostatic and absorbent wound dressing material compatible with 3D printing is developed to address deficiencies in current wound dressing protocol. The design involves an open celled, microporous hydrogel foam via a high internal phase emulsion (HIPE) template with biocompatible components and tunable hemostatic character by kaolin loading, the viscosity and cure kinetics of which are tailored for 3D printing applications. The use of nontoxic mineral oil organic phase results in cytocompatability with human dermal fibroblasts...
April 17, 2018: Macromolecular Bioscience
https://www.readbyqxmd.com/read/29665220/nanoscale-lacing-by-electrons
#13
Han-Wen Cheng, Jie Wang, Yong-Jun Li, Jing Li, Shan Yan, Shiyao Shan, Lingyan Wang, Zakiya Skeete, Chuan-Jian Zhong
The ability to harness the optical or electrical properties of nanoscale particles depends on their assembly in terms of size and spatial characteristics which remains challenging due to lack of size focusing. Electrons provide a clean and focusing agent to initiate the assembly of nanoclusters or nanoparticles. Here an intriguing route is demonstrated to lace gold nanoclusters and nanoparticles in string assembly through electron-initiated nucleation and aggregative growth of Au(I)-thiolate motifs on a thin film substrate...
April 17, 2018: Small
https://www.readbyqxmd.com/read/29665108/host-host-interactions-control-self-assembly-and-switching-of-triple-and-double-decker-stacks-of-tricarbazole-macrocycles-co-assembled-with-anti-electrostatic-bisulfate-dimers
#14
James Robert Dobscha, Sibali Debnath, Rachel Elizabeth Fadler, Elisabeth Maria Fatila, Maren Pink, Krishnan Raghavachari, Amar H Flood
Hierarchical assembly provides a route to complex architectures when using building blocks with strong and structurally well-defined recognition elements. These rules are expressed using cationic templates with reliable metal-ligand bonding but use of anions is rare on account of weak anion-host contacts. We investigate an approach that relies on host-host interactions to fortify assemblies formed between bisulfate anion dimers, [HSO4***HSO4]2-, and shape-persistent macrocycles called tricarbazole triazolophanes...
April 17, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29664932/obesity-and-unhealthy-lifestyle-associated-with-poor-executive-function-among-malaysian-adolescents
#15
Joyce Ying Hui Tee, Wan Ying Gan, Kit-Aun Tan, Yit Siew Chin
The understanding on the roles of obesity and lifestyle behaviors in predicting executive function of adolescents has been limited. Low executive function proficiency may have adverse effects on adolescents' school academic performance. This cross-sectional study aimed to examine the relationship between BMI-for-age and multiple lifestyle behaviors (operationalized as meal consumption, physical activity, and sleep quality) with executive function (operationalized as inhibition, working memory, and cognitive flexibility) on a sample of Malaysian adolescents aged between 12 and 16 years (N = 513)...
2018: PloS One
https://www.readbyqxmd.com/read/29664896/a-randomized-placebo-controlled-clinical-trial-of-prazosin-for-the-treatment-of-alcohol-use-disorder
#16
Claire E Wilcox, J Scott Tonigan, Michael P Bogenschutz, Joshua Clifford, Rose Bigelow, Tracy Simpson
OBJECTIVES: The noradrenergic system plays an important role in the pathophysiology of alcohol use disorder (AUD). Medications in this class may reduce drinking. Our aims were to investigate this in a unique sample of individuals with AUD. METHODS: Thirty-six individuals with AUD were randomized to treatment with prazosin, an alpha-1 noradrenergic antagonist, or placebo, for 6 weeks (target daily dose 16 mg). Hierarchical linear modeling was used to examine the effect of treatment group on rate of change in primary (drinks per week [DPW]) and several secondary outcome measures...
April 16, 2018: Journal of Addiction Medicine
https://www.readbyqxmd.com/read/29664725/expectations-for-tinnitus-treatment-and-outcomes-a-survey-study-of-audiologists-and-patients
#17
Fatima T Husain, Phillip E Gander, Jaclyn N Jansen, Sa Shen
BACKGROUND: Roughly 10-15% of the general population is affected by tinnitus and this percentage is estimated to rise in future. Because there is currently no cure for tinnitus, treatment is limited and is primarily achieved through management of symptoms and counseling. PURPOSE: This study compared audiologists' and patients' responses to related survey questions about their expectations regarding tinnitus treatment. Two separate surveys were created, one for patients with tinnitus, and one for practicing audiologists who may treat such patients...
April 2018: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/29664493/ni-oh-2-cnts-hierarchical-spheres-for-a-foldable-all-solid-state-supercapacitor-with-high-specific-energy
#18
Qingqing Qin, Jiaqin Liu, Wenping Mao, Chenxi Xu, Binbin Lan, Yan Wang, Yong Zhang, Jian Yan, Yucheng Wu
Energy density and mechanical strength are crucial for practical usage of flexible supercapacitors. Herein, we demonstrate a flexible supercapacitor using Ni(OH)2/CNTs hierarchical spheres with high specific capacity (854 C g-1) and tough PBI-KOH solid polymer electrolyte. The integrated device shows high specific energy (50.6 W h kg-1) and good flexibility under folding tests.
April 17, 2018: Nanoscale
https://www.readbyqxmd.com/read/29664419/three-dimensional-carbon-bubble-foams-with-hierarchical-pores-for-ultra-long-cycling-life-supercapacitors
#19
Bowen Wang, Weigang Zhang, Lei Wang, Jiake Wei, XueDong Bai, Jingyue Liu, Guanhua Zhang, Huigao Duan
Design and synthesis of integrated, interconnected porous structures are critical to the development of high-performance supercapacitors. We develop a novel and facial synthesis technic to construct three-dimensional carbon-bubble foams with hierarchical pores geometry. The carbon-bubble foams are fabricated by conformally coating, via catalytic decomposition of ethanol, a layer of carbon coating onto the surfaces of pre-formed ZnO foams and then the removal of the ZnO template by a reduction-evaporation process...
April 17, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29664141/circadian-rhythms-are-associated-with-variation-in-photosystem-ii-function-and-photoprotective-mechanisms
#20
Yulia Yarkhunova, Carmela R Guadagno, Matthew J Rubin, Seth J Davis, Brent E Ewers, Cynthia Weinig
The circadian clock regulates many aspects of leaf gas supply and biochemical demand for CO2 , and is hypothesized to improve plant performance. Yet the extent to which the clock may regulate the efficiency of photosystem II (PSII) and photoprotective mechanisms such as heat dissipation is less explored. Based on measurements of chlorophyll a fluorescence, we estimated the maximum efficiency of photosystem II in light (Fv'/Fm') and heat dissipation by non-photochemical quenching (NPQ). We further dissected total NPQ into its main components, qE (pH-dependent quenching), qT (state-transition quenching) and qI (quenching related to photoinhibition), in clock mutant genotypes of Arabidopsis thaliana, the cognate wild-type genotypes, and a panel of recombinant inbred lines (RILs) expressing quantitative variation in clock period...
April 17, 2018: Plant, Cell & Environment
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"