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Assessment of Debris Flow Activity in Response to an Earthquake Using the Sediment Connectivity Index
2022
Frontiers in Earth Science
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., 2019a; Hu et al., 2019) . ...
doi:10.3389/feart.2022.921706
doaj:a075268c80d04061bc721529b95eb72a
fatcat:dtewe4sh25ae3ikg4w3sepk4aa
Characterization and Tribological Performances of Graphene and Fluorinated Graphene Particles in PAO
2021
Nanomaterials
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Graphene has been widely used as a lubricating additive to reduce the energy consumption of engines and improve fuel economy because of its unique crystal structure. Herein, graphene (GR) and fluorinated graphene (F-GR) nanoparticles were prepared by ball milling and liquid-phase exfoliation. The SEM/EDS, HRTEM, XPS, Raman spectrometer, X-ray spectrometer, FTIR were used to investigate the morphologies, surface groups, and crystal structure of two kinds of graphene materials. The influence of
doi:10.3390/nano11082126
pmid:34443954
pmcid:PMC8401023
fatcat:yjwfeomkfjh3llr7qcvam7r7r4
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... ads on the tribological properties of two kinds of particles was investigated in Poly Alpha Olefin (PAO6) using a UMT-2 reciprocating tribometer. Results showed that the crystal structure of GR is better than F-GR. F-GR can improve the lubrication performance of PAO6. For PAO6 containing 1 wt% F-GR at 10 N, the average friction coefficient and average wear rate decreased by 12.3% and 87% relative to pure PAO6, respectively. However, the high load resulted in an inconspicuous anti-wear and anti-friction effect. The influence of F-GR on the tribological behavior of PAO6 was more substantial than that of GR. The friction and wear mechanisms attributed to F-GR quickly entered the interface between the friction pairs. Friction-induced F-GR nanosheets mainly took the tribo-chemical reactions to participate in the lubrication film formation and helped achieve a low friction coefficient and wear rate.
Hierarchical Structure Fabrication of IPMC Strain Sensor With High Sensitivity
2021
Frontiers in Materials
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In this paper, a biological template method is introduced and investigated to fabricate ionic polymer-metal composite (IPMC) strain sensor with bionic hierarchical structures. We utilized the multi-level structure of reed leaf surface, which can improve the contact area between the substrate and the electrode layers. Hierarchical structures were observed on the IPMC samples, including pyramid strips with the width in the range of 60–80 μm as well as synaptic scatters with diameter around 10 μm.
doi:10.3389/fmats.2021.748687
fatcat:gzp3qf2dovadddriso5pfcpkxu
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... In addition, five kinds of sensors with different interface structures were obtained by combining the traditional microneedle roller roughening and chemical plating processes. It was found that the IPMC sensor with reed-leaf and microneedle structure on each side presented the best performance, along with a high linearity, a sensitivity of 62.5 mV/1% and a large generated voltage peak under given mechanical stimuli, which is 3.7 times that of the sample fabricated without roughening.
Attenuated ZHX3 expression is predictive of poor outcome for liver cancer: Indication for personalized therapy
2022
Oncology Letters
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The zinc-fingers and homeoboxes (ZHX) family members have been characterized as master regulators in cancer initiation and development. The present study performed in silico data-mining with publicly available datasets and immunohistochemistry to assess the expression status of ZHX factors and the corresponding prognostic implications in liver cancer. Increased ZHX3 mRNA expression was associated with favorable overall survival in patients with liver cancer. Subgroups analyses revealed a
doi:10.3892/ol.2022.13345
pmid:35720472
pmcid:PMC9185145
fatcat:q5rd2uoajrhbxbk6n5id36zksq
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... cant association between the expression of ZHX factors and outcomes in select patient cohorts. Immunohistochemical analysis supported that ZHX3 expression was an independent prognostic indicator for patient survival. These results suggested that dysregulation of ZHX factors is involved in disease progression and ZHX3 expression may serve as a prognostic biomarker for liver cancer.
Effect of Cu-Doped Carbon Quantum Dot Dispersion Liquid on the Lubrication Performance of Polyethylene Glycol
2023
Lubricants
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Hu et al. [18] prepared water-soluble CQDs by adjusting the carbonation degree of ammonium citrate through a simple, low-cost bottom-up method. ...
doi:10.3390/lubricants11020086
fatcat:mb4xelhumvexpdkjl5ijz3iq6m
Adjoint based state estimation of compressible flow in porous media
2020
Petroleum
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Dual-stage Flows-based Generative Modeling for Traceable Urban Planning
[article]
2023
arXiv
pre-print
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Urban planning, which aims to design feasible land-use configurations for target areas, has become increasingly essential due to the high-speed urbanization process in the modern era. However, the traditional urban planning conducted by human designers can be a complex and onerous task. Thanks to the advancement of deep learning algorithms, researchers have started to develop automated planning techniques. While these models have exhibited promising results, they still grapple with a couple of
arXiv:2310.02453v1
fatcat:kzvrd5yecncpnowbnpqdmk7v3y
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... nresolved limitations: 1) Ignoring the relationship between urban functional zones and configurations and failing to capture the relationship among different functional zones. 2) Less interpretable and stable generation process. To overcome these limitations, we propose a novel generative framework based on normalizing flows, namely Dual-stage Urban Flows (DSUF) framework. Specifically, the first stage is to utilize zone-level urban planning flows to generate urban functional zones based on given surrounding contexts and human guidance. Then we employ an Information Fusion Module to capture the relationship among functional zones and fuse the information of different aspects. The second stage is to use configuration-level urban planning flows to obtain land-use configurations derived from fused information. We design several experiments to indicate that our framework can outperform compared to other generative models for the urban planning task.
Equatorial windows and barriers for stationary Rossby wave propagation
2019
Journal of Climate
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Rossby waves can cross the equator and connect the Northern Hemisphere (NH) and Southern Hemisphere (SH), or be blocked in the vicinity of the equator. This work explores the windows and barriers for the cross-equatorial waves (CEWs) by the wave ray ensemble method. The eastern Pacific and Atlantic regions are identified as common windows in both boreal winter and summer, while the Africa-Indian Ocean section exists as a window only in boreal summer. The western-central Pacific is found to be a
doi:10.1175/jcli-d-18-0722.1
fatcat:uq6ib3ptmvaehkldkleiwcz4fy
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... barrier section. These results are consistent with correlation analysis of reanalysis data. Moreover, the dependence on the wavenumber of CEWs is investigated, revealing that they are restricted to long waves with zonal wavenumbers less than 6 and that their wavenumber vectors exhibit a northwest-southeast (southwest-northeast) tilt when they cross the equator from the NH to SH (from the SH to NH). This long-wave dominance of CEWs results from the spectral-selective filtering mechanism, which suggests that long waves have narrower equatorial barriers than short waves. Finally, the main wave duct associated with each window is obtained by the global passing CEW density distribution. The results indicate that the main CEW ducts roughly follow a great circle-like pathway, except for the Africa-Indian Ocean window in boreal summer, which may be modulated by the cross-equatorial monsoonal flow.
Confining MoS2 nanocrystals in MOF-derived carbon for high performance lithium and potassium storage
2020
Green Energy & Environment
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Developing an efficient synthesis protocol to simultaneously control 2D nanomaterials' size and dispersion is the pivot to optimize their electrochemical performance. Herein, we report the synthesis of uniform MoS 2 nanocrystals well-anchored into the void space of porous carbon (donated as MoS 2 3C hybrids) by a simple confined reaction in metal-organic framework (MOF) during carbonization process. The strong confinement effect refrain MoS 2 growth and aggregation, generating abundant active
doi:10.1016/j.gee.2020.02.001
fatcat:edq77xfexreidmo3prxpibqtly
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... nters and edges, which contribute fast lithium/potassium reaction kinetics. In addition to the hybridization with the derived carbon, the MoS 2 3C hybrids exhibit rapid Li þ transfer rate (~10 À9 cm 2 s À1 ) and greatly improved electronic conductivity. Consequently, the MoS 2 3C hybrids show ultrafast rate performances and satisfactory cycling stabilities as anode materials for both lithium and potassium ion batteries. This work demonstrates a universal tactic to achieve high dispersive 2D nanomaterials with tailorable particle size.
Draft genome sequence of Acidithiobacillus ferrooxidans YQH-1
2015
Genomics Data
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Acidithiobacillus ferrooxidans YQH-1 is a moderate acidophilic bacterium isolated from a river in a volcano of Northeast China. Here, we describe the draft genome of strain YQH-1, which was assembled into 123 contigs containing 3,111,222 bp with a G + C content of 58.63%. A large number of genes related to carbon dioxide fixation, dinitrogen fixation, pH tolerance, heavy metal detoxification, and oxidative stress defense were detected. The genome sequence can be accessed at DDBJ/EMBL/GenBank under the accession no. LJBT00000000.
doi:10.1016/j.gdata.2015.10.009
pmid:26697394
pmcid:PMC4664765
fatcat:x2w3kaquqrcjxpaw2wtvw6lfvu
Signal coordination scheme based on traffic emission
2016
IET Intelligent Transport Systems
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This paper presents a new optimal signal coordination scheme with an emphasis on emission reduction as a result of minimized passenger delay. By analyzing the limitation of the algebraic method, a new algorithm using arrival-departure curves was proposed. A microscopic emission simulation platform based on VISSIM (a microscopic multi-modal traffic flow simulation model) and CMEM (Comprehensive Modal Emission Model) was established to estimate traffic emission reduction. A multi-objective
doi:10.1049/iet-its.2014.0255
fatcat:bet7vij3kvhp5dgvbeig7xzkva
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... algorithm was used to find Pareto solutions that simultaneously reduce both passenger delay and vehicle emissions. Using the real-world traffic data collected in Changzhou city, an example of the signal coordination scheme was developed and its impact on emissions was simulated in the VISSIM-CMEM platform. The simulation results show that the proposed scheme achieved an average emission reduction of 28.8% on public transport vehicles and 18.7% on all vehicles over existing signal schemes.
Clinical Effect of Endoscopic Pneumatic Dilation for Achalasia
2015
Medicine
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Although pneumatic dilation is an accepted method for the treatment of achalasia, this therapy has high recurrence and complication rates, and prolonged follow-up studies on the parameters associated with various outcomes are rare. In this prospective 10-year followup study, a satisfactory therapeutic effect was achieved without serious complications. We report the therapeutic experience with pneumatic dilation, having aimed to evaluate the long-term clinical safety and efficacy of pneumatic
doi:10.1097/md.0000000000001193
pmid:26181569
pmcid:PMC4617067
fatcat:ipxccirotjhkvbkguzg35nktaa
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... ation. In total, 35 consecutive patients with idiopathic achalasia who underwent pneumatic dilation were followed up at regular intervals in person or by a phone interview over a 10-year period. The mean duration of the follow-up was 43.03 AE 26.34 months (range 6-120 months). Remission was assessed by the dysphagia classification and symptom scores. Patients' clinical symptom scores were calculated before and at 6 to 36 months, 37 to 60 months, and >60 months after therapy. The influence of the patients' age, gender, and disease duration on the therapeutic effect was analyzed. The success rate of the operation was 97.2% (35/36), without massive hemorrhaging, perforation or other serious complications. Dysphagia after the therapy was significantly eased (P < 0.01). In total, 35 patients have been followed up for 6 to 36 months after therapy, 21 cases for 37 to 60 months, and 5 cases for >60 months, and the patients' symptom scores separately decreased significantly compared with the pretherapy scores (P < 0.01). For these patients, the 6 to 36 months remission rate was 85.7% (30/35), the 37 to 60 months rate was 61.9% (13/21), and the >60 months rate was 40% (2/5). The dilation effect had no relationship to the patient's age, gender, and disease duration (P > 0.05). The patients in 30 cases (85.7%) were successfully treated with a single dilation, in 4 cases (11.4%) with 2 dilations, and in 1 case (2.9%) with 3 dilations. These results suggest that endoscopic pneumatic dilation is an achalasia therapy with a good response; it is a simple and safe procedure with long-term clinical effectiveness. It is a preferred method in the treatment of achalasia. (Medicine 94(28):e1193) Abbreviations: LES = lower esophageal sphincter, POEM = per oral endoscopic myotomy.
MiR-26a Promotes Ovarian Cancer Proliferation and Tumorigenesis
2014
PLoS ONE
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MicroRNAs (miRNAs) important for posttranscriptional gene expression are involved in the initiation and progression of human cancer. In this study, we reported that miR-26a was over-expressed in human EOC specimens and the expression level of extracellular miR-26a in plasma can distinguish patients from healthy controls in EOC. Ectopic expression of miR-26a in ovarian cancer (OC) cells increased cell proliferation and clonal formation. This growth promoting effect of OC cell growth was mediated
doi:10.1371/journal.pone.0086871
pmid:24466274
pmcid:PMC3899311
fatcat:d3lmrclmkngufcnnzgs2kt2mnu
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... by miR-26a inhibition of the posttranscription of ER-a. Furthermore, inhibition of miR-26a suppressed the tumor formation generated by injecting OC cells in nude mice. Our results suggest that aberrantly expressed miR-26a may contribute to OC development.
Pan-genome analysis of three main Chinese chestnut varieties
2022
Frontiers in Plant Science
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We have acquired an invention patent-"open pollination" molecular chestnut breeding system (Hu et al., 2017) based on the character of extremely short catkins in H7. ...
Finally, the completeness of the genome Hu et al. 10.3389/fpls.2022.916550 Frontiers in Plant Science 04 frontiersin.org assembly was evaluated using benchmarking sets of universal single-copy orthologs ...
doi:10.3389/fpls.2022.916550
pmid:35958219
pmcid:PMC9358723
fatcat:hi5iax6q2rf3tcqlsxpuchtfhi
Prevalence of Post-Stroke Cognitive Impairment in China: A Community-Based, Cross-Sectional Study
2015
PLoS ONE
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International hospital-based studies have indicated a high risk of cognitive impairment after stroke, evidence from community-based studies in China is scarce. To determine the prevalence of post-stroke cognitive impairment (PSCI) and its subtypes in stroke survivors residing in selected rural and urban Chinese communities, we conducted a community-based, cross-sectional study in 599 patients accounting for 48% of all stroke survivors registered in the 4 communities, who had suffered confirmed
doi:10.1371/journal.pone.0122864
pmid:25874998
pmcid:PMC4395303
fatcat:cpcqf5oog5ddzaep6l2db223xe
more »
... trokes and had undergone cognitive assessments via the Montreal Cognitive Assessment (MoCA), Mini-Mental State Examination (MMSE), and Hachinski Ischemia Scale (HIS). Detection of PSCI was based on scores in these neuropsychological scales. Factors potentially impacting on occurrence of PSCI were explored by comparing demographic characteristics, stroke features, and cardiovascular risk factors between patients with and without PSCI. The overall prevalence of PSCI was 80.97% (95%CI: 77.82%-84.11%), while that of non-dementia PSCI (PSCI-ND) and post-stroke vascular dementia (PSD) was 48.91% (95%CI: 44.91%-52.92%) and 32.05% (95%CI: 28.32%-35.79%), respectively. Prior stroke and complications during the acute phase were independent risk factors for PSCI. The risk of recurrent stroke survivors having PSCI was 2.7 times higher than for first-episode survivors, and it was 3 times higher for those with complications during the acute phase than for those without. The higher prevalence of PSCI in this study compared with previous Chinese studies was possibly due to the combined effects of including rural stroke survivors, a longer period from stroke onset, and different assessment methods. There is an urgent need to recognize and prevent PSCI in stroke patients, especially those with recurrent stroke and complications during the acute phase.
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