Search results for: Bo Peng

Items from 1 to 20 out of 748 results

article

Application of a new ultrasonic-assisted semi-solid brazing on dissimilar Al/Mg alloys

Zhiwu Xu, Zhengwei Li, Bo Peng, Zhipeng Ma, more

Materials Letters > 2018 > 228 > C > 72-76

In this work, an ultrasonic-assisted semi-solid brazing method was proposed to join Al/Mg. Oxide films on substrate surfaces can be successfully removed even when filler metal was at semi-solid state. A large quantity of intermetallic compounds (IMCs) formed at 460 °C because of large amount of Al and Mg dissolved into joint caused by strong cavitation. Decreasing the temperature to 430 °C could significantly...

article

A micromechanics theory for homogenization and dehomogenization of aperiodic heterogeneous materials

Bo Peng, Wenbin Yu

Composite Structures > 2018 > 199 > C > 53-62

Based on the recently discovered mechanics of structure genome, a micromechanics theory is developed for computing the effective properties and local fields of aperiodic heterogeneous materials. This theory starts with expressing the displacements of the heterogeneous material in terms of those of the corresponding homogeneous material and fluctuating functions. Integral constraints are introduced...

article

MPI windows on storage for HPC applications

Sergio Rivas-Gomez, Roberto Gioiosa, Ivy Bo Peng, Gokcen Kestor, more

Parallel Computing > 2018 > 77 > C > 38-56

Upcoming HPC clusters will feature hybrid memories and storage devices per compute node. In this work, we propose to use the MPI one-sided communication model and MPI windows as unique interface for programming memory and storage. We describe the design and implementation of MPI storage windows, and present its benefits for out-of-core execution, parallel I/O and fault-tolerance. In addition, we explore...

article

RNase H meets molecular beacons: an ultrasensitive fluorometric assay for nucleic acids

Shao-Xiang Wang, Kai-Sheng Liu, Yi-Fei Lou, Shao-Qi Wang, more

Microchimica Acta > 2018 > 185 > 8 > 1-7

An innovative signal amplification strategy assisted by RNase H is described here for the detection of DNA targets in a universal fashion. A tailor-made RNA molecular beacon (RMB) conjugated with a fluorescence resonance energy transfer (FRET) pair (fluorophore and quencher) was designed, characterized, and combined with the employment of RNase H. Its performance is compared to that of other nucleases...

article

Selective ortho C−H Cyanoalkylation of (Diacetoxyiodo)arenes through [3,3]‐Sigmatropic Rearrangement

Junsong Tian, Fan Luo, Chaoshen Zhang, Xin Huang, more

Angewandte Chemie International Edition > 57 > 29 > 9078 - 9082

We herein report a robust catalyst‐free cross‐coupling between ArI(OAc)₂ and α‐stannyl nitriles, aided by TMSOTf. The transformation introduces a cyanoalkyl group to the ortho position of ArI(OAc)₂ and simultaneously reduces the aryl iodine(III) to iodide, thus providing α‐(2‐iodoaryl) nitrile as the product. This transformation could be completed within 5 min at −78 °C and features superb functional‐group...

article

Selective ortho C−H Cyanoalkylation of (Diacetoxyiodo)arenes through [3,3]‐Sigmatropic Rearrangement

Junsong Tian, Fan Luo, Chaoshen Zhang, Xin Huang, more

Angewandte Chemie > 130 > 29 > 9216 - 9220

article

Torque Distribution Strategy of Electric Vehicle with In-wheel Motors Based on the Identification of Driving Intention

Bo Peng, Huanhuan Zhang, Feihu Xuan, Wenwen Xiao

Automotive Innovation > 2018 > 1 > 2 > 140-146

A driver’s intention is recognized accurately by employing fuzzy identification and a logic threshold including acceleration intention and steering intention. Different torque distribution control strategies are developed for different intentions and the driver’s torque demand is amended by fuzzy identification so that the response of the vehicle is more consistent with the driver’s intention of operation...

article

Does the accelerated soil N cycling sustain N demand of Quercus mongolica after decade-long elevated CO₂ treatment?

Jianfei Sun, Weiwei Dai, Bo Peng, Jun Liu, more

Biogeochemistry > 2018 > 139 > 2 > 197-213

The stimulation of plant growth and biomass accumulation by elevated CO₂ may be limited by soil nitrogen (N) availability. However, our understanding of the response of soil N cycling to elevated CO₂ and when progressive N limitation occurs remains limited. Here, we used an open top chamber experiment to examine the effects of 10 years of elevated CO₂ on ecosystem carbon (C) and N dynamics in a Quercus mongolica...

article

Origin of molecular oxygen formation in irradiated borosilicate glasses studied by molecular dynamics simulation

Wei Yuan, Hai‐bo Peng, Xin Du, Peng Lv, more

International Journal of Applied Glass Science > 9 > 3 > 344 - 351

Formation of molecular oxygen was observed in borosilicate glasses irradiated with energetic ions and electrons, which has significant effects on mechanical properties of glasses and evaluation of High Level nuclear Waste (HLW) immobilization. Though O₂ was considered from the broken of X‐O‐Na (X is Si or B) in borosilicate glass, what was X species remained unclear. To find out the original source...

article

Lead Neurotoxicity on Human Neuroblastoma Cell Line SH-SY5Y is Mediated via Transcription Factor EGR1/Zif268 Induced Disrupted in Scherophernia-1 Activation

Yuanyuan You, Bo Peng, Songbin Ben, Weijian Hou, more

Neurochemical Research > 2018 > 43 > 7 > 1308-1316

Lead (Pb²⁺) is a well-known type of neurotoxin and chronic exposure to Pb²⁺ induces cognition dysfunction. In this work, the potential role of early growth response gene 1 (EGR1) in the linkage of Pb²⁺ exposure and disrupted in scherophernia-1 (DISC1) activity was investigated. Human neuroblastoma cell line SH-SY5Y was subjected to different concentrations of lead acetate (PbAc) to determine the effect...

article

Kinetics and mechanism of diclofenac removal using ferrate(VI): roles of Fe³⁺, Fe²⁺, and Mn²⁺

Junfeng Zhao, Qun Wang, Yongsheng Fu, Bo Peng, more

Environmental Science and Pollution Research > 2018 > 25 > 23 > 22998- 23008

In this study, the effect of Fe³⁺, Fe²⁺, and Mn²⁺ dose, solution pH, reaction temperature, background water matrix (i.e., inorganic anions, cations, and natural organic matters (NOM)), and the kinetics and mechanism for the reaction system of Fe(VI)/Fe³⁺, Fe(VI)/Fe²⁺, and Fe(VI)/Mn²⁺ were investigated systematically. Traces of Fe³⁺, Fe²⁺, and Mn²⁺ promoted the DCF removal by Fe(VI) significantly....

article

Effects of a natural sepiolite bearing material and lime on the immobilization and persistence of cadmium in a contaminated acid agricultural soil

Xueying Cao, Pengjie Hu, Changyin Tan, Longhua Wu, more

Environmental Science and Pollution Research > 2018 > 25 > 22 > 22075- 22084

Soil contamination with cadmium (Cd) represents a substantial threat to human health and environmental quality. Long-term effectiveness and persistence of remediation are two important criteria for the evaluation of amendment techniques used to remediate soils polluted with potentially toxic metals. In the current study, we investigated the remediation persistence of a natural sepiolite bearing material...

article

Responses of terrestrial nitrogen pools and dynamics to different patterns of freeze‐thaw cycle: A meta‐analysis

Decai Gao, Lei Zhang, Jun Liu, Bo Peng, more

Global Change Biology > 24 > 6 > 2377 - 2389

Altered freeze‐thaw cycle (FTC) patterns due to global climate change may affect nitrogen (N) cycling in terrestrial ecosystems. However, the general responses of soil N pools and fluxes to different FTC patterns are still poorly understood. Here, we compiled data of 1519 observations from 63 studies and conducted a meta‐analysis of the responses of 17 variables involved in terrestrial N pools and...

article

Latent source mining in FMRI via restricted Boltzmann machine

Xintao Hu, Heng Huang, Bo Peng, Junwei Han, more

Human Brain Mapping > 39 > 6 > 2368 - 2380

Blind source separation (BSS) is commonly used in functional magnetic resonance imaging (fMRI) data analysis. Recently, BSS models based on restricted Boltzmann machine (RBM), one of the building blocks of deep learning models, have been shown to improve brain network identification compared to conventional single matrix factorization models such as independent component analysis (ICA). These models,...

article

Overcoming Thermodynamic Limitations in Dimethyl Carbonate Synthesis from Methanol and CO₂

Bo Peng, Herui Dou, Hui Shi, Erika E. Ember, more

Catalysis Letters > 2018 > 148 > 7 > 1914-1919

Shifting the unfavorable equilibrium in the synthesis of dimethyl carbonate from CO₂ and methanol via integrated separation opens a feasible and environmentally benign route. The subtle differences in the sorption kinetics of water and methanol on Linde type A zeolites are used to selectively remove water from the methanolic reaction medium with a separation factor of 100. Combining reaction with...

article

Mild Ring Contractions of Cyclobutanols to Cyclopropyl Ketones via Hypervalent Iodine Oxidation

Yan Sun, Xin Huang, Xiaojin Li, Fan Luo, more

Advanced Synthesis & Catalysis > 360 > 6 > 1082 - 1087

An iodine‐mediated oxidative ring contraction of cyclobutanols has been developed. The reaction allows the synthesis of a wide range of aryl cyclopropyl ketones under mild and eco‐friendly conditions. A variety of functional groups including aromatic or alkyl halides, ethers, esters, ketones, alkenes, and even aldehydes are nicely tolerated in the reaction. This is in contrast with traditional synthetic...

article

Sustainable efficient adsorbent: Alkali-acid modified magnetic biochar derived from sewage sludge for aqueous organic contaminant removal

Lin Tang, Jiangfang Yu, Ya Pang, Guangming Zeng, more

Chemical Engineering Journal > 2018 > 336 > C > 160-169

Municipal sewage sludge (MS)-derived biochar shows low-cost superiority as a potential adsorbent in organic contaminants removal, but limited by its poor adsorption capacity and heavy metal leaking risk. Herein, a novel and effective alkali-acid combined method was proposed for its modification and applied to tetracycline adsorption. The associative facilitation between the alkali and acid modifications...

article

Polysialic acid-polyethylene glycol conjugate-modified liposomes as a targeted drug delivery system for epirubicin to enhance anticancer efficiency

Ting Zhang, Songlei Zhou, Ling Hu, Bo Peng, more

Drug Delivery and Translational Research > 2018 > 8 > 3 > 602-616

Polysialic acid (PSA) is a nonimmunogenic and biodegradable polysaccharide. In recent years, PSA has shown its potential applications to cancer treatment. In this study, PSA-polyethylene glycol (PEG) conjugate was synthesized for the decoration of epirubicin (EPI)-loaded liposomes. The study aimed to evaluate the PSA-PEG conjugated modified liposomes (EPI-PSL) in vitro and in vivo to investigate the...

article

On the optimization of a mixed speaker array in an enclosed space using the virtual-speaker weighting method

Bo Peng, Sifa Zheng, Xiangning Liao, Xiaomin Lian

Mechanical Systems and Signal Processing > 2018 > 102 > C > 214-229

In order to achieve sound field reproduction in a wide frequency band, multiple-type speakers are used. The reproduction accuracy is not only affected by the signals sent to the speakers, but also depends on the position and the number of each type of speaker. The method of optimizing a mixed speaker array is investigated in this paper. A virtual-speaker weighting method is proposed to optimize both...

article

0D/2D interface engineering of carbon quantum dots modified Bi2WO6 ultrathin nanosheets with enhanced photoactivity for full spectrum light utilization and mechanism insight

Jiajia Wang, Lin Tang, Guangming Zeng, Yaocheng Deng, more

Applied Catalysis B: Environmental > 2018 > 222 > C > 115-123

A novel full spectrum light driven carbon quantum dots (CQDs)/Bi₂WO₆ (CBW) hybrid materials were synthesized via a facile hydrothermal method. Multiple techniques including XRD, TEM, XPS, BET, UV–vis, XPS, PL and TRPL, were employed to investigate the structures, morphology, optical and electronic properties and photocatalytic performance of as-prepared samples. The results indicated that CBW heterojunctions...

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INFONA - science communication portal

Search results for: Bo Peng

Application of a new ultrasonic-assisted semi-solid brazing on dissimilar Al/Mg alloys

A micromechanics theory for homogenization and dehomogenization of aperiodic heterogeneous materials

MPI windows on storage for HPC applications

RNase H meets molecular beacons: an ultrasensitive fluorometric assay for nucleic acids

Selective ortho C−H Cyanoalkylation of (Diacetoxyiodo)arenes through [3,3]‐Sigmatropic Rearrangement

Selective ortho C−H Cyanoalkylation of (Diacetoxyiodo)arenes through [3,3]‐Sigmatropic Rearrangement

Torque Distribution Strategy of Electric Vehicle with In-wheel Motors Based on the Identification of Driving Intention

Does the accelerated soil N cycling sustain N demand of Quercus mongolica after decade-long elevated CO₂ treatment?

Origin of molecular oxygen formation in irradiated borosilicate glasses studied by molecular dynamics simulation

Lead Neurotoxicity on Human Neuroblastoma Cell Line SH-SY5Y is Mediated via Transcription Factor EGR1/Zif268 Induced Disrupted in Scherophernia-1 Activation

Kinetics and mechanism of diclofenac removal using ferrate(VI): roles of Fe³⁺, Fe²⁺, and Mn²⁺

Effects of a natural sepiolite bearing material and lime on the immobilization and persistence of cadmium in a contaminated acid agricultural soil

Responses of terrestrial nitrogen pools and dynamics to different patterns of freeze‐thaw cycle: A meta‐analysis

Latent source mining in FMRI via restricted Boltzmann machine

Overcoming Thermodynamic Limitations in Dimethyl Carbonate Synthesis from Methanol and CO₂

Mild Ring Contractions of Cyclobutanols to Cyclopropyl Ketones via Hypervalent Iodine Oxidation

Sustainable efficient adsorbent: Alkali-acid modified magnetic biochar derived from sewage sludge for aqueous organic contaminant removal

Polysialic acid-polyethylene glycol conjugate-modified liposomes as a targeted drug delivery system for epirubicin to enhance anticancer efficiency

On the optimization of a mixed speaker array in an enclosed space using the virtual-speaker weighting method

0D/2D interface engineering of carbon quantum dots modified Bi2WO6 ultrathin nanosheets with enhanced photoactivity for full spectrum light utilization and mechanism insight

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