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Bulletin of the American Meteorological Society 2024年第8期105卷 S1-S11页

作者： Boyer, T. Blunden, J. Dunn, R.J.H. NOAA/NESDIS National Centers for Environmental Information Silver Spring Maryland NOAA/NESDIS National Centers for Environmental Information Asheville North Carolina Met Office Hadley Centre Exeter United Kingdom European Centre for Medium-Range Weather Forecasts Reading United Kingdom University of Maryland College Park Maryland Scripps Institution of Oceanography University of California San Diego La Jolla California NOAA/NWS National Centers for Environmental Prediction Climate Prediction Center College Park Maryland Brandenburg University of Technology (BTU) Cottbus-Senftenberg Germany Servicio Meteorológico Nacional Buenos Aires Argentina NOAA/OAR Physical Sciences Laboratory Boulder Colorado European Centre for Medium-Range Weather Forecasts Bonn Germany Center for Geophysical Research and School of Physics University of Costa Rica San José Costa Rica Department of Meteorology and National Centre for Earth Observation University of Reading Reading United Kingdom Centro Nacional de Monitoramento e Alertas de Desastres Naturais CEMADEN São Paulo Brazil Université Grenoble Alpes Institut des Géosciences de l’Environnement IRD CNRS Grenoble INP Grenoble France Hampton University Hampton Virginia Seychelles Meteorological Authority Mahe Seychelles Section for Glaciers Ice and Snow Norwegian Water Resources and Energy Directorate Oslo Norway National Research Institute for Agriculture Food and Environment (INRAE) CARRTEL Université Savoie Mont Blanc Thonon les Bains France Graduate School of Agriculture Osaka Metropolitan University Sakai Japan Science Faculty Universidad Nacional de Colombia Bogotá Colombia University of Bremen Bremen Germany NOAA Global Monitoring Laboratory Boulder Colorado Servicio Nacional de Meteorología e Hidrología del Perú Lima Perú Centro de Investigaciones sobre Desertificación – Spanish National Research Council (CSIC-UV-GVA) Valencia Spain Hydro-Climate Extremes Lab (H-CEL) Ghent University Ghent Belgium Department o

In 2023, La Niña conditions that generally prevailed in the eastern Pacific Ocean from mid-2020 into early 2023 gave way to a strong El Niño by October. Atmospheric concentrations of Earth’s major greenhouse gases—carbon dioxide, methane, and nitrous oxide—all increased to record-high levels. The annual global average carbon dioxide concentration in the atmosphere rose to 419.3±0.1 ppm, which is 50% greater than the pre-industrial level. The growth from 2022 to 2023 was 2.8 ppm, the fourth highest in the record since the 1960s. The combined short-term effects of El Niño and the long-term effects of increasing levels of heat-trapping gases in the atmosphere contributed to new records for many essential climate variables reported here. The annual global temperature across land and oceans was the highest in records dating as far back as 1850, with the last seven months (June–December) having each been record warm. Over land, the globally averaged temperature was also record high. Dozens of countries reported record or near-record warmth for the year, including China and continental Europe as a whole (warmest on record), India and Russia (second warmest), and Canada (third warmest). Intense and widespread heatwaves were reported around the world. In Vietnam, an all-time national maximum temperature record of 44.2°C was observed at Tuong Duong on 7 May, surpassing the previous record of 43.4°C at Huong Khe on 20 April 2019. In Brazil, the air temperature reached 44.8°C in Araçuaí in Minas Gerais on 20 November, potentially a new national record and 12.8°C above normal. The effect of rising temperatures was apparent in the cryosphere, where snow cover extent by June 2023 was the smallest in the 56-year record for North America and seventh smallest for the Northern Hemisphere overall. Heatwaves contributed to the greatest average mass balance loss for Alpine glaciers around the world since the start of the record in 1970. Due to rapid volume loss beginning in 2021, St. A

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Kinetic modeling of NiO-based oxygen carriers for the sorption enhanced chemical looping steam CH 4 reforming

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Materials Today: Proceedings 2018年第14期5卷 27353-27361页

作者： D. Ipsakis E. Heracleous L. Silvester D.B. Bukur A.A. Lemonidou Department of Chemical Engineering Aristotle University of Thessaloniki 54124 Thessaloniki Greece School of Science & Technology International Hellenic University (IHU) 57001 Thessaloniki Greece Texas A&M University at Qatar Chemical Engineering Program Education City 23874 Doha Qatar Artie McFerrin Department of Chemical Engineering Texas A&M University College Station Texas 77843 USA

The reduction and oxidation (redox) kinetics of four NiO-based oxygen carriers (OCs) under chemical looping conditions are presented and discussed in this study. The 40% NiO OCs were supported on Al 2 O 3 , TiO 2 , SiO 2 and ZrO 2 and were isothermally tested in a thermogravimetric unit connected with a mass spectrometer (TGA-MS) in 20 redox cycles (reduction under 15% CH 4 /He at 650°C/oxidation under air at 800°C). Several solid-state kinetic models (chemical reaction controlled, geometrical/volumetric contraction, diffusion limited, nucleation growth and random pore models) were consecutively and optimally screened for each OC and for different redox cycles. As was found, metal-support interactions occurring between NiO and Al 2 O 3 , TiO 2 supports lead to a reduction controlled by chemical reaction and was quantitatively captured through the “Unreacted Shrinking Core Model”. On the contrary, reduction of NiO supported on SiO 2 , TiO 2 is controlled by “nucleation and nuclei growth” and Avrami-Erofeev kinetics fitted the respective experimental data. Regarding oxidation, the present study revealed that it is controlled by nucleation and “Avrami-Erofeev” (NiO/Al 2 O 3 , NiO/TiO 2 ) and “Prout-Tompkins” (NiO/ZrO 2 ) kinetic models provided an optimal fitting. In all studied cases, the progressing of cycles revealed structural material modification that were summed up to significant variations in OCs’ redox rates and related kinetics

关键词： NiO-based oxygen carriers redox solid-state kinetics chemical looping reforming

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A LRET Nanoplatform Consisting of Lanthanide and Amorphous Manganese Oxide for NIR-II Luminescence Lifetime Imaging of Tumor Redox Status

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Angewandte Chemie 2022年第47期134卷

作者： Dr. Mengyao Zhao Dr. Hongjun Zhuang Dr. Hongxin Zhang Dr. Benhao Li Jiang Ming Prof. Xiaoyuan Chen Prof. Meiwan Chen State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical Sciences University of Macau Macau 999078 China Departments of Diagnostic Radiology Surgery Chemical and Biomolecular Engineering and Biomedical Engineering Yong Loo Lin School of Medicine and Faculty of Engineering National University of Singapore Singapore 119074 Singapore Contribution: Conceptualization (lead) Investigation (lead) Writing - original draft (lead) Department of Chemistry State Key Laboratory of Molecular Engineering of Polymers and iChem Shanghai Key Laboratory of Molecular Catalysis and Innovative Material Fudan University Shanghai 200433 China Contribution: Investigation (supporting) Nanomedicine Translational Research Program NUS Center for Nanomedicine Yong Loo Lin School of Medicine National University of Singapore Singapore 117597 Singapore Clinical Imaging Research Centre Centre for Translational Medicine Yong Loo Lin School of Medicine National University of Singapore Singapore 117599 Singapore Institute of Molecular and Cell Biology Agency for Science Technology and Research (A*STAR) Singapore 138673 Singapore Contribution: Funding acquisition (lead) Supervision (lead)

Designing luminescence lifetime sensors in the second near-infrared (NIR-II) window is a great challenge due to the difficult structural construction. Here, we report a tumor redox responsive and easily synthesized material, amorphous manganese oxide (MnO x ) with indirect band gap of 1.02 eV, as an energy acceptor to build a luminescence resonance energy transfer (LRET) toolbox for universally regulating NIR-I to NIR-II luminescence lifetimes of lanthanide nanoparticles, in which energy transfer is based on matched energy gap instead of conventional overlapped spectra. We further utilize ytterbium (Yb 3+ )-doped YbNP@MnO x as an NIR-II luminescence lifetime sensor to realize in vitro quantitative redox visualization with relative errors under 5 % in samples covered with mouse skin. Furthermore, HepG2 cells and tumors with high redox state have been accurately distinguished by NIR-II luminescence lifetime imaging. The quantified intracellular and intratumor glutathione (GSH) levels are highly consistent with the commercial kit results, illustrating the reliable redox visualization ability in biological tissue.

关键词： Amorphous Manganese Oxide Lanthanide Luminescence Lifetime Imaging NIR-II LRET Quantitative Redox Visualization

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Supramolecular Polymerization-Induced Nanoassemblies for Self-Augmented Cascade Chemotherapy and Chemodynamic Therapy of Tumor

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Angewandte Chemie 2021年第32期133卷

作者： Dr. Kuikun Yang Dr. Guocan Yu Zhiqing Yang Ludan Yue Dr. Xiangjun Zhang Chen Sun Jianwen Wei Dr. Lang Rao Prof. Xiaoyuan Chen Prof. Ruibing Wang State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical Science University of Macau Avenida da Universidade Taipa Macau China MoE Frontiers Science Center for Precision Oncology University of Macau Avenida da Universidade Taipa Macau China Key Lab of Organic Optoelectronics & Molecular Engineering Department of Chemistry Tsinghua University Beijing China Institute of Biomedical Health Technology and Engineering Shenzhen Bay Laboratory Shenzhen China Departments of Diagnostic Radiology Surgery Chemical and Biomolecular Engineering and Biomedical Engineering Yong Loo Lin School of Medicine and Faculty of Engineering National University of Singapore Singapore Singapore Clinical Imaging Research Centre Centre for Translational Medicine Yong Loo Lin School of Medicine National University of Singapore Singapore Singapore Nanomedicine Translational Research Program NUS Center for Nanomedicine Yong Loo Lin School of Medicine National University of Singapore Singapore Singapore

The clinical application of chemodynamic therapy is impeded by the insufficient intracellular H 2 O 2 level in tumor tissues. Herein, we developed a supramolecular nanoparticle via a simple one-step supramolecular polymerization-induced self-assembly process using platinum (IV) complex-modified β-cyclodextrin-ferrocene conjugates as supramolecular monomers. The supramolecular nanoparticles could dissociate rapidly upon exposure to endogenous H 2 O 2 in the tumor and release hydroxyl radicals as well as platinum (IV) prodrugs in situ, which is reduced into cisplatin to significantly promote the generation of H 2 O 2 in the tumor tissue. Thus, the supramolecular nanomedicine overcomes the limitation of conventional chemodynamic therapy via the self-augmented cascade radical generation and drug release. In addition, dissociated supramolecular nanoparticles could be readily excreted from the body via renal clearance to effectively avoid systemic toxicity and ensure long term biocompatibility of the nanomedicine. This work may provide new insights on the design and development of novel supramolecular nanoassemblies for cascade chemo/chemodynamic therapy.

关键词： drug delivery self-amplified dissociation self-assembly supramolecular polymerization synergistic chemo/chemodynamic therapy

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Application of nanocatalyst iron oxide (Fe2O3) to reduce exhaust emissions (CO and HC) 1

Application of nanocatalyst iron oxide (Fe2O3) to reduce exh...

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1st Materials Research Society-Indonesia Conference and Congress 2017, MRS-INA C and C 2017

作者： Puspitasari, P. Yazirin, C. Bachtiar, L.A. Dika, J.W. Zaharis, S.M.S.N.S. Mechanical Engineering Department Engineering Faculty Malang State University Semarang street 5 East-Java-Malang Indonesia Center of Nano Research and Advanced Materials Malang State University Semarang street 5 East-Java-Malang Indonesia Master Program of Mechanical Engineering Engineering Faculty Malang State University Semarang street 5 East-Java-Malang Indonesia Bachelor Program Mechanical Engineering Department Malang State University Semarang street 5 East-Java-Malang Indonesia Industrial Chemical Technology Programme Faculty of Science and Technology Universiti Sains Islam Malaysia Bandar Baru Nilai Negeri Sembilan Nilai71800 Malaysia

Fe2O3 has been the interest of many studies due to its applications in various scientific and industrial fields including in environment, corrosion, soil science, and exhaust emissions. Fe2O3 is a chemical mixture that can be applied as a catalyst to reduce exhaust emissions because it is capable of binding CO and HC contained in motorcycle exhaust gases The growth of motor vehicles results in air pollution and an increase in exhaust emissions consisting of 70.50% CO and 18.34% HC. One effort to reduce exhaust emission levels is by applying a catalytic converter to the exhaust system. This research was an experimental research aiming to investigate the difference in emission level of CO and HC between a motorcycle with and without a catalytic converter. The types of fuel used were RON 88, RON 90, RON 92, and RON 98. The results showed that the application of Fe2O3 as a catalyst could reduce the level of CO significantly in RON 88, i.e. 91.43% CO, and the level of HC in RON 88 and RON 92, i.e. 53.27% and 91.07% HC respectively. © Published under licence by IOP Publishing Ltd.

关键词： Catalytic converters

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Potassium Batteries: Dendrite‐Free Potassium Metal Anodes in a Carbonate Electrolyte (Adv. Mater. 7/2020)

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Advanced Materials 2020年第7期32卷

作者： Pengcheng Liu Yixian Wang Qilin Gu Jagjit Nanda John Watt David Mitlin Materials Science and Engineering Program and Texas Materials Institute The University of Texas at Austin Austin TX 78712‐1591 USA Department of Materials Science and Engineering Faculty of Engineering National University of Singapore Singapore 117574 Singapore Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge TN 37830 USA Center for Integrated Nanotechnologies Los Alamos National Laboratory Los Alamos NM 87545 USA

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Hierarchical Structures: programmable Building Blocks via Internal Stress engineering for 3D Collective Assembly (Adv. Mater. Technol. 12/2020)

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Advanced Materials Technologies 2020年第12期5卷 2070070-2070070页

作者： Woongbi Cho Dong Yoon Hahm Jae Ha Yim Jun Hee Lee Yun Ju Lee Dong‐Gyun Kim Yong Seok Kim Jeong Jae Wie Program in Environmental and Polymer Engineering Department of Polymer Science and Engineering Inha University 100 Inha‐ro Michuhol‐gu Incheon 22212 Republic of Korea Incheon Academy of Science and Arts 192 Academy‐ro Yeonsu‐gu Incheon 22009 Republic of Korea Chemical Materials Solutions Center Korea Research Institute of Chemical Technology 141 Gajeong‐ro Yuseong‐gu Daejeon 34114 Republic of Korea

In article number 2000758, Jeong Jae Wie and co‐workers present a nature‐inspired collective assembly of precisely designed 3D building blocks for scaled‐up hierarchical 3D architectures. The precise dimension control of 3D building blocks is successfully progressed by controlling the spatio‐temporal effect composed of fractal elements throughout the stages of fabrication. The concept of collective assembly extends the morphological diversity of the 3D structures and presents a construction of creatively assembled structures.

关键词： collective assembly hierarchical structures internal stress photopolymerization shape‐morphing

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Facile and Scalable Preparation of Fluorescent Carbon Dots for Multifunctional Applications

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engineering 2017年第3期3卷 402-408页

作者： Dan Wang Zhiyong Wang Qiuqiang Zhan Yuan Pu Jie-xin wang Neil R. Foster Liming Dai Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Beijing 100029 China Center of Advanced Science and Engineering for Carbon (Case4Carbon) Department of Macromolecular Science and Engineering Case School of Engineering Case Western Reserve University Cleveland OH 44106 USA SCNU-ZJU Joint Research Center of Photonics South China Academy of Advanced Optoelectronics South China Normal University Guangzhou 510006 China Department of Chemical Engineering Curtin University Perth WA 6845 Australia

The synthesis of fluorescent nanomaterials has received considerable attention due to the great potential of these materials for a wide range of applications, from chemical sensing through bioimaging to optoelectron- ics. Herein, we report a facile and scalable approach to prepare fluorescent carbon dots （FCDs） via a one-pot reaction of citric acid with ethylenediamine at 150 ℃ under ambient air pressure. The resultant FCDs pos- sess an optical bandgap of 3.4 eV and exhibit strong excitation-wavelength-independent blue emission （λEm = 450 nm） under either one- or two-photon excitation. Owing to their low cytotoxicity and long fluorescence lifetime, these FCDs were successfully used as internalized fluorescent probes in human cancer cell lines （HeLa cells） for two-photon excited imaging of cells by fluorescence lifetime imaging microscopy with a high-contrast resolution. They were also homogenously mixed with commercial inks and used to draw fluo- rescent patterns on normal papers and on many other substrates （e.g., certain flexible plastic films, textiles, and clothes）. Thus, these nanomaterials are promising for use in solid-state fluorescent sensing, security labeling, and wearable optoelectronics.

关键词： Scalable Carbon dots Two-photon Fluorescence lifetime imaging Patterning

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Nonmonotonic Stress Relaxation after Cessation of Steady Shear Flow in Supramolecular Assemblies

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Physical Review Letters 2019年第21期123卷 218003-218003页

作者： Jan Hendricks Ameur Louhichi Vishal Metri Rémi Fournier Naveen Reddy Laurent Bouteiller Michel Cloitre Christian Clasen Dimitris Vlassopoulos W. J. Briels Department of Chemical Engineering KU Leuven 3001 Leuven Belgium Institute of Electronic Structure and Laser FORTH P.O. Box 1527 70013 Heraklion Crete Greece Department of Materials Science and Technology University of Crete Voutes Campus 70013 Heraklion Crete Greece Computational Chemical Physics Faculty of Science and Technology and MESA+Institute for Nanotechnology University of Twente P.O. Box 217 7500 AE Enschede Netherlands Molecular Macromolecular Chemistry and Materials ESPCI Paris CNRS PSL University 75005 Paris France Faculty of Industrial Engineering Hasselt University Martelarenlaan 42 3500 Hasselt Belgium and IMO-IMOMEC Hasselt University Wetenschapspark 1 3590 Diepenbeek Belgium Sorbonne Université CNRS IPCM Equipe Chimie des Polymères 75005 Paris France ICS 3 Forschungszentrum Jülich Wilhelm-Johnen-Straße 52428 Jülich Germany

Stress relaxation upon cessation of shear flow is known to be described by single-mode or multimode monotonic exponential decays. This is considered to be ubiquitous in nature. However, we found that, in some cases, the relaxation becomes anomalous in that an increase in the relaxing stress is observed. Those observations were made for physicochemically very different systems, having in common, however, the presence of self-associating units generating structures at large length scales. The nonmonotonic stress relaxation can be described phenomenologically by a generic model based on a redistribution of energy after the flow has stopped. When broken bonds are reestablished after flow cessation, the released energy is partly used to locally increase the elastic energy by the formation of deformed domains. If shear has induced order such that these elastic domains are partly aligned, the reestablishing of bonds gives rise to an increase of the overall stress.

关键词： Non-Newtonian fluids Self-assembly Shear deformation Stimuli-responsive materials Polymer gels Rheology techniques

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Novel biosorbents synthesized from fungal and bacterial biomass and their applications in the adsorption of volatile organic compounds

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Bioresource technology 2020年 300卷 122705页

作者： Zhuowei Cheng Ke Feng Yousheng Su Jiexu Ye Dongzhi Chen Shihan Zhang Xiaomin Zhang Dionysios D Dionysiou College of Environment Zhejiang University of Technology Hangzhou 310009 China. College of Environment Zhejiang University of Technology Hangzhou 310009 China. Electronic address: cdz@***. Environmental Engineering and Science Program Department of Chemical and Environmental Engineering (ChEE) University of Cincinnati Cincinnati OH 45221-0012 USA.

Adsorption is an efficient and low-cost technology used to purify volatile organic compounds (VOCs). In the current study, novel microbial adsorbents were synthesized using cells of lyophilized fungi (Ophiostoma stenoceras LLC) or bacteria (Pseudomonas veronii ZW) that were modified by aminomethylation. Based on the adsorption performance and structural characterization results, the modified fungal biosorbent was the best. Its maximum adsorption capacities for ethyl acetate, α-pinene, and n-hexane were 620, 454, and 374 mg·g, respectively, which were much higher than those of other synthesized biosorbents. The specific surface area of the fungal biosorbent was 20 m·g, and most of the components were hydrocarbon compounds and polysaccharides. The VOC adsorption process on these synthesized biosorbents was in accordance with the Langmuir isothermal model and the pseudo-first-order kinetic model, thereby suggesting that physical adsorption was the dominant mechanism. The fungal biosorbent could be used for five consecutive VOC sorption-desorption cycles without any obvious decrease in adsorption capacity.

关键词： Adsorption kinetics Aminomethylation modification Fungal Microbial biosorbents VOC adsorption

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