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NaH doped TiO_(2)as a high-performance catalyst for Mg/MgH_(2)cycling stability and room temperature absorption

Journal of Magnesium and Alloys 2023年第8期11卷 2740-2749页

作者： joshua Adedeji Bolarin Zhao Zhang Hujun Cao Zhi li Teng He Ping Chen Dalian National Laboratory for Clean Energy Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalianP.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China Shangdong Energy Group Co. LTD.No.10777Jingshi RoadJinan CityShandong Province250014P.R.China School of Material Science and Engineering Xi'an Jiaotong UniversityXi'anShaanxi Province710049P.R.China

This paper presents the catalytic effect of NaH doped nanocrystalline TiO_(2)(designated as NaTiOxH)in the improvement of MgH_(2)hydrogen storage *** catalyst preparation involves ball milling NaH with TiO_(2)for 3 *** addition of 5 wt%NaTiOxH powder into MgH_(2)reduces its operating temperature to∼185℃,which is∼110℃lower than the additive-free as-milled MgH_(2).The composite remarkably desorbs∼7.2 wt%H_(2)within 15 min at∼290℃and reabsorbs∼4.5 wt%H_(2)in 45 min at room temperature under 50 bar H_(2).MgH_(2)dehydrogenation is activated at 57 kJ/mol by the *** importantly,the addition of 2.5 wt%NaTiOxH catalyst aids MgH_(2)to reversibly produce∼6.1 wt%H_(2)upon 100 cycles within 475 hr at 300℃.Microstructural investigation into the catalyzed MgH_(2)composite reveals a firm contact existing between NaTiOxH and MgH_(2)***,the NaTiOxH catalyst consists of catalytically active Ti_(3)O_(5),and“rod-like”Na_(2)Ti_(3)O_(7)species liberated in-situ during preparation;these active species could provide multiple hydrogen diffusion pathways for an improved MgH_(2)sorption ***,the elemental characterization identifies the reduced valence states of titanium(Tility consistent with H_(2)insertion and *** phenomenon is believed to enhance the mobility of Mg/MgH_(2)electrons by the creation and elimination of oxygen vacancies in the defective(TiO_(2-x))*** findings have therefore moved MgH_(2)closer to practical applications.

关键词： Magnesium hydride NaH doped nanocrystalline TiO_(2) Kinetics Room temperature absorption Reversibility

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Observation points classifier ensemble for high-dimensional imbalanced classification

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CAAI Transactions on Intelligence Technology 2023年第2期8卷 500-517页

作者： Yulin He Xu li Philippe Fournier‐Viger joshua Zhexue Huang Mianjie li Salman Salloum College of Computer Science&Software Engineering Shenzhen UniversityShenzhenChina Guangdong Laboratory of Artificial Intelligence and Digital Economy(SZ) Shenzhen UniversityShenzhenChina Faculty of Information Technology Macao University of Science and TechnologyMacaoChina School of Computing National University of SingaporeSingaporeSingapore

In this paper,an Observation Points Classifier Ensemble(OPCE)algorithm is proposed to deal with High-Dimensional Imbalanced Classification(HDIC)problems based on data processed using the Multi-Dimensional Scaling(MDS)feature extraction ***,dimensionality of the original imbalanced data is reduced using MDS so that distances between any two different samples are preserved as well as ***,a novel OPCE algorithm is applied to classify imbalanced samples by placing optimised observation points in a low-dimensional data ***,optimization of the observation point mappings is carried out to obtain a reliable assessment of the unknown *** experiments have been conducted to evaluate the feasibility,rationality,and effectiveness of the proposed OPCE algorithm using seven benchmark HDIC data *** results show that(1)the OPCE algorithm can be trained faster on low-dimensional imbalanced data than on high-dimensional data;(2)the OPCE algorithm can correctly identify samples as the number of optimised observation points is increased;and(3)statistical analysis reveals that OPCE yields better HDIC performances on the selected data sets in comparison with eight other HDIC *** demonstrates that OPCE is a viable algorithm to deal with HDIC problems.

关键词： classifier ensemble feature transformation high-dimensional data classification imbalanced learning observation point mechanism

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BRD7 plays an anti-inflammatory role during early acute inflammation by inhibiting activation of the NF-кB signaling pathway

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Cellular & Molecular Immunology 2017年第10期14卷 830-841页

作者： Ran Zhao Yukun liu Heran Wang Jing Yang weihong Niu Songqing Fan wei Xiong Jian Ma Xiaoling li joshua B Phillips Ming Tan Yuanzheng Qiu Guiyuan li Ming Zhou Xiangya Hospital Central South UniversityChangshaHunan 410008China Cancer Research Institute Central South UniversityChangshaHunan 410078China Key Laboratory of Carcinogenesis and Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion Ministry of EducationChangshaHunan 410078China The Second Xiangya Hospital Central South UniversityChangshaHunan 410011China Mitchell Cancer Institute University of South AlabamaMobileAL 36604USA

Increasing evidence has shown a strong association between tumor-suppressor genes and ***,the role of BRD7 as a novel tumor suppressor in inflammation remains *** this study,by observing BRD7 knockout mice for 6–12 months,we discovered that compared with BRD7+/+mice,BRD7^(−/−)mice were more prone to inflammation,such as external inflammation and abdominal *** using mouse embryo fibroblast(MEF)cells from the BRD7 knockout mouse,an in vitro lipopolysaccharide(LPS)-stimulated MEF cell line was *** mRNA levels of interleukin-6(IL-6),tumor necrosis factor-α(TNF-α),chemokine(C-X-C motif)ligand 1(CXCL-1)and inducible nitric oxide synthase(iNOS)were significantly increased in BRD7^(−/−)MEF cells compared with BRD7+/+MEF cells after LPS stimulation for 1 or 6 *** addition,the cytoplasm-to-nucleus translocation of nuclear factor kappa-B(NF-κB;p65)and an increased NF-κB reporter activity were observed in BRD7^(−/−)MEF cells at the 1 h time point but not at the 6 h time ***,an in vivo dextran sodium sulfate(DSS)-induced acute colitis model was *** expected,the disease activity index(DAI)value was significantly increased in the BRD7^(−/−)mice after DSS treatment for 1–5 days,which was demonstrated by the presence of a significantly shorter colon,splenomegaly and tissue ***,higher expression levels of IL-6,TNF-α,p65,CXCL-1 and iNOS,and an increased level of NF-κB(p65)nuclear translocation were also found in the DSS-treated BRD7^(−/−)*** findings suggest that BRD7 has an anti-inflammatory role during early acute inflammation by inhibiting activation of the NF-кB signaling pathway,which provides evidence to aid in understanding the therapeutic effects of BRD7 on inflammatory diseases.

关键词： acute inflammation BRD7 DSS LPS NF-κB pathway

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Testing and assessing the performance of a new warm mix asphalt with SMC

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Journal of Traffic and Transportation Engineering(English Edition) 2015年第6期2卷 399-405页

作者： Changfa Ai Qiang joshua li Yanjun Qiu School of Civil and Environmental Engineering Oklahoma State University School of Civil Engineering Southwest Jiaotong University Highway Engineering Key Laboratory of Sichuan Province

Warm mix asphalt （WMA} is a new technology which asphalt mix is produced and placed at normal temperature. It has advantages including low cost, environmentally friendly, haul-convenience, and so on. WMA has been widely tested and applied in the USA in the last decade, but it has just started in China. Recently, a new WMA using a new plastic- macromolecule-normal temperature additive, which was called ＂SMC＂ by the production company, was introduced as asphalt modifier. Based on discussing the strength forming process of this new WMA with SMC, a series of laboratory tests, including Marshall stability test （MST）, boiling test （BT）, modified immersion Marshall test （MIMT）, freeze-thaw split- ring test （FTST）, rutting test （RT）, low-temperature bending test （LTBT）, and abrasion loss test （ALT）, were conducted in this study to assess the performance of this WMA and the capability of applying it on low volume roads in China. SMC modified asphalt mixed under normal temperature is used in testing samples. It was found that this WMA product exhibited merits on its strength, which was about 6.7 kN bigger than the requirement of 5.0 kN in the JTG F40-2004, on high-temperature stability, which is about 1100 times/ram greater than the requirement of 600-1000 times/mm in the ）TG F40-2004, and on its storage stability. Based on these indicators, it is recommended that this product could be used for low volume low class roads construction. However, due to the relatively lower water resistance and low-temperature cracking resistance, this product is suggested to be applied first in the areas with warm weather and little rainfall. In order to improve the perfor- mance of this WMA with SMC, further research on this SMC asphalt modifier should be continued.

关键词： Warm mix asphalt (WMA) SMC asphalt modifier Low volume road Laboratory test Performance assessment

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Mechanically driven assembly of biomimetic 2D-material microtextures with bioinspired multifunctionality

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Nano Research 2024年第2期17卷 663-678页

作者： Yang li lin Jing joshua M.little Haochen Yang Tsai-Chun Chung Po-Yen Chen Department of Chemical and Biomolecular Engineering University of MarylandCollege ParkMD 20740USA Maryland Robotics Center University of MarylandCollege ParkMD 20742USA School of Materials Science and Engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore

Nature provides a wealth of bio-inspiration for advanced material *** various nanomaterials into biomimetic microtextures with bioinspired functionalities has spurred increasing research interests and facilitated technological advances in various *** recent years,two-dimensional materials(2DMs)have emerged as important building block units in the biomimicry field due to their distinct chemical,physical,electrical,electrochemical,and catalytic *** this review article,various mechanically driven assembly approaches are summarized to fabricate various genealogies of biomimetic 2DM microtextures with bio-inspired ***,sequential deformation strategies are discussed to programmably construct higher dimensional 2DM microtextures,ranging from wrinkles/crumples(one-time deformation)to multiscale hierarchies(multiple deformations).Next,the current progress using higher dimensional 2DM microtextures to imitate different biological structures and/or induce bio-inspired multifunctionality is systematically *** showcases of bio-inspiration and biomimicry using different 2DM nanosheets are highlighted:(1)wrinkle patterns of an earthworm that spur the design of strain sensors with programmable working ranges and sensitivities,(2)wrinkle appearance of a Shar-Pei dog that motivates the fabrication of stretchable energy storage devices,(3)hierarchical scale textures of a desert lizard that inspire cation-induced gelation platforms for 2DM aerogels,and(4)wrinkle skin of an elephant that influences the development of 2DM protective skin for soft ***,challenges and future opportunities of adopting 2DM nanosheets to assemble biomimetic microstructures with synergistic functionalities are discussed.

关键词： two-dimensional(2D)materials mechanically driven assembly biomimetic microtextures functional nanocomposite bio-inspired multifunctionality

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Estimating underground mine ventilation friction factors from low density 3D data acquired by a moving liDAR

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International Journal of Mining Science and Technology 2018年第4期28卷 650-655页

作者： Curtis Watson joshua Marshall Mining Systems Laboratory The Robert M.Buchan Department of Mining Queen's University

Ventilation system analysis for underground mines has remained mostly unchanged since the Atkinson method was made popular by Mc Elroy in 1935. Data available to ventilation technicians and engineers is typically limited to the quantity of air moving through any given heading. Because computer-aided modelling, simulation, and ventilation system design tools have improved, it is now important to ensure that developed models have the most accurate information possible. This paper presents a new technique for estimating underground drift friction factors that works by processing 3 D point cloud data obtained by using a mobile li DAR. Presented are field results that compare the proposed approach with previously published algorithms, as well as with manually acquired measurements.

关键词： Mine ventilation Mine design Mobile mapping Roughness estimation Friction factors liDAR3D point clouds

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A novel observation points‐based positive‐unlabeled learning algorithm

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CAAI Transactions on Intelligence Technology 2023年第4期8卷 1425-1443页

作者： Yulin He Xu li Manjing Zhang Philippe Fournier‐Viger joshua Zhexue Huang Salman Salloum Guangdong Laboratory of Artificial Intelligence and Digital Economy(SZ) ShenzhenChina College of Computer Science and Software Engineering Shenzhen UniversityShenzhenChina School of Computing National University of SingaporeSingaporeSingapore

In this study,an observation points‐based positive‐unlabeled learning algorithm(hence called OP‐PUL)is proposed to deal with positive‐unlabeled learning(PUL)tasks by judiciously assigning highly credible labels to unlabeled *** proposed OP‐PUL algorithm has three ***,an observation point classifier ensemble(OPCE)algorithm is constructed to divide unlabeled samples into two categories,which are temporary positive and permanent negative ***,a temporary OPC(TOPC)is trained based on the combination of original positive samples and permanent negative samples and then the permanent positive samples that are correctly classified with TOPC are retained from the temporary positive ***,a permanent OPC(POPC)is finally trained based on the combination of original positive samples,permanent positive samples and permanent negative *** exhaustive experimental evaluation is conducted to validate the feasibility,rationality and effectiveness of the OP‐PUL algorithm,using 30 benchmark PU data *** show that(1)the OP‐PUL algorithm is stable and robust as unlabeled samples and positive samples are increased in unlabeled data sets and(2)the permanent positive samples have a consistent probability distribution with the original positive ***,a statistical analysis reveals that POPC in the OP‐PUL algorithm can yield better PUL performances on the 30 data sets in comparison with four well‐known PUL *** demonstrates that OP‐PUL is a viable algorithm to deal with PUL tasks.

关键词： artificial intelligence datamining,machine learning

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NLRP3 inflammasome activation determines the fibrogenic potential of PM_(2.5) air pollution particles in the lung

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Journal of Environmental Sciences 2022年第1期34卷 429-441页

作者： wei Cao Xiang Wang Jiulong li Ming Yan Chong Hyun Chang joshua Kim Jinhong Jiang Yu-Pei liao Shannon Tseng Sydney Kusumoputro Candice Lau Marissa Huang Pengli Han Pengju Lu Tian Xia Translational Medical Center Zhengzhou Central Hospital Affiliated Zhengzhou UniversityZhengzhou 450007China Division of NanoMedicine Department of MedicineUniversity of CaliforniaLos Angeles 90095CAUnited States Basic Medical College Zhengzhou UniversityZhengzhou 450001China Department of Ecology and Evolutionary Biology University of CaliforniaLos Angeles 90095CAUnited States Department of Integrative Biology and Physiology University of CaliforniaLos Angeles 90095CAUnited States Department of Molecular Cell and Developmental BiologyUniversity of CaliforniaLos Angeles 90095CAUnited States

Airborne fine particulate matter(PM_(2.5))is known to cause respiratory inflammation such as chronic obstructive pulmonary disease and lung ***3 inflammasome activation has been implicated in these diseases;however,due to the complexity in PM_(2.5)compositions,it is difficult to differentiate the roles of the components in triggering this *** collected eight real-life PM_(2.5)samples for a comparative analysis of their effects on NLRP3 inflammasome activation and lung *** vitro assays showed that although the PM_(2.5)particles did not induce significant cytotoxicity at the dose range of 12.5to 100μg/m L,they induced potent TNF-αand IL-1βproduction in PMA differentiated THP-1 human macrophages and TGF-β1 production in BEAS-2B human bronchial epithelial *** the dose of 100μg/m L,PM_(2.5)induced NLRP3 inflammasome activation by inducing lysosomal damage and cathepsin B release,leading to IL-1β*** was confirmed by using NLRP3-and ASC-deficient cells as well as a cathepsin B inhibitor,ca-074 *** of PM_(2.5)via oropharyngeal aspiration at 2 mg/kg induced significant TGF-β1 production in the bronchoalveolar lavage fluid and collagen deposition in the lung at 21days post-exposure,suggesting PM_(2.5)has the potential to induce pulmonary *** ranking of in vitro IL-1βproduction correlates well with the in vivo total cell count,TGF-β1 production,and collagen *** summary,we demonstrate that the PM_(2.5)is capable of inducing NLRP3 inflammasome activation,which triggers a series of cellular responses in the lung to induce fibrosis.

关键词： Particulate matter Predictive toxicology NLRP3 inflammasome IL-1β Lung fibrosis Lung inflammation

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Changes in soil properties under Eucalyptus relative to Pinus massoniana and natural broadleaved forests in South China

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Journal of Forestry Research 2018年第5期29卷 1299-1306页

作者： Shuangshuang Chu Douglass F.Jacobs joshua L.Sloan li Xue Daoming Wu Shucai Zeng College of Forestry and Landscape Architecture South China Agricultural University Department of Forestry and Natural Resources Purdue University

The ecological effects of eucalypt plantations（EPs） have garnered increasing *** understand their effect on soil quality at a landscape scale,and to determine whether soil quality parameters differ due to different stand types,we evaluated soil characteristics in twenty-one groups of EPs,Pinus massoniana ***（PMPs） and natural broadleaved forests（NBFs）across Guangdong Province,*** the physical characteristics of soil hydrology and the properties of soil nutrients in A and B horizons were *** showed that,compared to NBFs,EPs and PMPs produced a shallower litter layer,reduced canopy density,higher soil bulk density,significantly lower total porosity,non-capillary porosity,total water volume,and hygroscopic water in the A horizon（P〈0.05）.Moreover,total N,available K,and soil organic carbon（SOC） in EPs and PMPs were significantly lower than in *** and PMPs did not differ significantly in N,P or K content,but PMPs had significantly lower SOC and boron in the A horizon than *** p H and poor capacity to buffer acidification generally occurred in all cover *** EPs and PMPs showed a decline in soil properties relative to NBFs,but EPs and PMPs exhibited no significant *** results indicate that actions are needed to ameliorate the potential negative effects on soil quality in forestry plantations.

关键词： Eucalyptus Pinus massoniana Plantations Soil organic matter Soil acidification Moisture retention capacity

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Elucidate long-term changes of ozone in Shanghai based on an integrated machine learning method

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Frontiers of Environmental Science & Engineering 2023年第11期17卷 223-238页

作者： Jin Xue Fangting Wang Kun Zhang Hehe Zhai Dan Jin Yusen Duan Elly Yaluk Yangjun Wang ling Huang Yuewu li Thomas lei Qingyan Fu joshua S.Fu li li School of Environmental and Chemical Engineering Shanghai UniversityShanghai 200444China Key Laboratory of Organic Compound Pollution Control Engineering(MOE) Shanghai UniversityShanghai 200444China Shanghai Environmental Monitoring Center Shanghai 200235China Institute of Science and Environment University of Saint JosephMacao 999078China Department of Civil and Environmental Engineering University of TennesseeKnoxvilleTN 37996USA

Surface ozone(O_(3))is influenced by regional background and local photochemical formation under favorable meteorological *** the contribution of these factors to changes in O_(3)is crucial to address the issue of O_(3)*** this study,we propose a novel integrated method that combines random forest,principal component analysis,and Shapley additive explanations to distinguish observed O_(3)into meteorologically affected ozone(O_(3_MET)),chemically formed from local emissions(O_(3_LC)),and regional background ozone(O_(3_RBG)).Applied to three typical stations in Shanghai during the warm season from 2013 to 2021,the results indicate that O_(3_RBG)in Shanghai was 48.8±0.3 ppb,accounting for 79.6%–89.4%at different sites,with an overall declining trend of 0.018 ppb/yr.O_(3_LC)at urban and regional sites ranged from 5.9–9.0 ppb and 8.9–14.6 ppb,respectively,which were significantly higher than the contributions of 2.5–7.4 ppb at an upwind background site.O_(3_MET)can be categorized into those affecting O_(3)photochemical generation and those changing O_(3)dispersion conditions,with absolute contributions to O_(3)ranging from 13.4–19.0 ppb and 13.1–13.7 ppb,*** found that the O_(3)rebound in 2017,compared to 2013,was primarily influenced by unfavorable O_(3)dispersion conditions and unbalanced emission reductions;while the O_(3)decline in 2021,compared to 2017,was primarily influenced by overall favorable meteorological conditions and further emissions *** findings highlight the challenge of understanding O_(3)change due to meteorology and regional background,emphasizing the need for systematic interpretation of the different components of O_(3).

关键词： Ozone Integrated method Machine learning

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