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Analysis on the effects of Clean Competition Act on the Primary Paper Industry of Korea

Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and Paper Industry 2024年第5期56卷 21-29页

作者： Lee, Ho Sang Kim, Dong Hyun Seo, Jin Ho Division of Forest Strategy National Institute of Forest Science Seoul02455 Korea Republic of Dept. of Paper Material Science and Engineering Division of Forest Material Science and Engineering Kangwon National University 24341 Korea Republic of

The U.S. government plans to implement the Clean Competition Act (CCA) as a trade policy from 2025 to reduce carbon emissions from manufacturing in order to decarbonize the industrial sector. Since the paper industry is one of the 12 targeted sectors, domestic paper manufacturers and the government must proactively prepare for its implications. This study analyzes the impact of the U.S. Clean Competition Act on South Korean paper product exports and forecasts the additional costs associated with a carbon tax. Notably, the U.S. imports approximately one-sixth of South Korea's paper product exports, and South Korea's current carbon intensity stands at 0.167 tCO2eq/t lower than that of the U.S. However, according to the Intergovernmental Panel on Climate Change (IPCC) scenarios, additional carbon taxes may be implemented in 2030 and 2025 under the scenarios in which global temperatures rise by 2°C and remain below 2°C, respectively. Specifically, the projected additional carbon tax could reach approximately $5,621,380 by 2050. Given that the paper industry is a significant source of greenhouse gas emissions, it is imperative for this sector to urgently reduce emissions during production. To effectively address these challenges, the industry must focus on transitioning to eco-friendly production methods that enhance energy and resource efficiency, rather than merely investing in new facilities. Furthermore, government support is essential for research, development, and dissemination of greenhouse gas reduction technologies and process improvements. © 2024 Korean Technical Assoc. of the Pulp and Paper Industry. All rights reserved.

关键词： Greenhouse gas emissions

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Incorporation of Ionic Conductive Polymers into Sulfide Electrolyte-Based Solid-State Batteries to Enhance Electrochemical Stability and Cycle Life

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Energy & Environmental materials 2024年第6期7卷 4-12页

作者： Juhyoung Kim Woonghee Choi Seong-Ju Hwang Dong Wook Kim Advanced Materials Division Korea Research Institute of Chemical Technology(KRICT)Daejeon 34114Korea Department of Material Science and Engineering Yonsei UniversitySeoul 03722Korea Department of Material Science and Engineering Seoul National UniversitySeoul 08826Korea Advanced Materials and Chemical Engineering University of Science and Technology(UST)Daejeon 34113Korea

Sulfide-based inorganic solid electrolytes are promising materials for high-performance safe solid-state *** high ion conductivity,mechanical characteristics,and good processability of sulfide-based inorganic solid electrolytes are desirable properties for realizing high-performance safe solid-state batteries by replacing conventional liquid ***,the low chemical and electrochemical stability of sulfide-based inorganic solid electrolytes hinder the commercialization of sulfide-based safe solid-state ***,the instability of sulfide-based inorganic solid electrolytes is intensified in the cathode,comprising various *** this study,carbonate-based ionic conductive polymers are introduced to the cathode to protect cathode materials and suppress the reactivity of sulfide *** instruments,including electrochemical spectroscopy,X-ray photoelectron spectroscopy,and scanning electron microscopy,confirm the chemical and electrochemical stability of the polymer electrolytes in contact with sulfide-based inorganic solid ***-based solid-state cells show stable electrochemical performance over 100 cycles when the ionic conductive polymers were applied to the cathode.

关键词： composite cathode electrochemical stability ionic conductive polymer solid-state battery sulfide solid electrolyte

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LMDI Decomposition Analysis for GHG Emissions of Korea’s Paper Industry

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Palpu Chongi Gisul/Journal of Korea Technical Association of the Pulp and Paper Industry 2023年第6期55卷 13-20页

作者： Lee, Ho Sang Seo, Jin Ho Division of Global Forestry National Institute of Forest Science Seoul02455 Korea Republic of Dept. of Paper Material Science and Engineering Division of Forest Material Science and Engineering Kangwon National University 24341 Korea Republic of

This study analyzes the factor decomposition of greenhouse gas(GHG) emissions in the domestic paper industry of Republic of Korea using the log mean Divisia index (LMDI) method. Five factors were decomposed: active effect, structural effect, intensity effect, energy mix effect, and emission increase/decrease effect(total effect). Analyzing GHG emissions by paper type from 2010 to 2021, the study finds that emissions from the domestic paper industry have been decreasing since 2010, with the major factors for this decrease being structural and intensity effects. The structural effect is the most significant factor in reducing GHG emissions, representing approximately twice the impact of the intensity effect. The active and intensity effects appear differently depending on paper type. Even though the active effect increases GHG emissions, the total GHG emissions decrease due to the intensity and energy mix effects. Therefore, to reduce GHG emissions in the paper industry, it is necessary to focus on the structural and intensity effects;however, differences exist depending on paper type. Furthermore, expanding support for decarbonization policies not only from companies but also from governments is essential. © 2023 Korean Technical Assoc. of the Pulp and Paper Industry. All rights reserved.

关键词： Greenhouse gases

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Radiative Cooling: a new channel from Energy Sustainability to Semiconductors

Radiative Cooling: a new channel from Energy Sustainability ...

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2024 Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides, BGPP 2024

作者： Gan, Qiaoqiang Material Science and Engineering Physical Science and Engineering Division King Abdullah University of Science & Technology Saudi Arabia

This talk will describe recent progresses regarding radiative cooling strategies for optoelectronics, from system design to on-chip integration. Specifically, we will discuss the considerations for passive cooling of ... 详细信息

关键词： Radiative Cooling

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Melting points of ionic liquids:Review and evaluation

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Green Energy & Environment 2024年第12期9卷 1802-1811页

作者： Zhengxing Dai Lei Wang Xiaohua Lu Xiaoyan Ji State Key Laboratory of Material-Oriented Chemical Engineering Nanjing Tech UniversityNanjingChina Energy Engineering Division of Energy ScienceLulea University of TechnologyLuleaSweden

The melting points of ionic liquids(ILs)reported since 2020 were surveyed,collected,and reviewed,which were further combined with the previous data to provide a database with 3129 ILs ranging from 177.15 to 645.9 K in melting *** addition,the factors that affect the melting point of ILs from macro,micro,and thermodynamic perspectives were summarized and *** the development of the quantitative structure-property relationship(QSPR),group contribution method(GCM),and conductor-like screening model for realistic solvents(COSMO-RS)for predicting the melting points of ILs were reviewed and further *** with the evaluation together with the preliminary study conducted in this work,it shows that COSMO-RS is more promising and possible to further improve its performance,and a framework was thus proposed.

关键词： Ionic liquids Melting point COSMO-RS QSPR GCM

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Remarkably facilitated crystallization of MSE-type zeolite by using an efficient organic structure-directing agent (vol 53, upae077, 2024 )

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CHEMISTRY LETTERS 2024年第8期53卷 upae077-upae077页

作者： Nakamura, Kaisei Division of Material Science and Chemical Engineering Yokohama National University 79-5 Tokiwadai Hodogaya-ku Yokohama 240-8501 Japan

A very powerful organic structure-directing agent (OSDA) for the synthesis of MSE-type zeolite was designed and successfully prepared. When using conventional OSDA, more than 10 d of crystallization time was necessary, whereas the use of the new type of OSDA gave a highly crystalline MSE-type zeolite using only 32 h of crystallization time.

关键词： MCM-68 MSE-type zeolite OSDA

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Enhanced creep resistance in Mg-Y-Nd alloy via regulating prior thermo-mechanical treatment

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Journal of Magnesium and Alloys 2024年第7期12卷 2766-2782页

作者： Zhirou Zhang Qinghuan Huo Yuxiu Zhang Gantao Zhao Hiromi Nagaumi Xuyue Yang School of Materials Science and Engineering Central South UniversityChangsha 410083China Advanced Metals Division Korean Institute of Material ScienceChangwon 51508Republic of Korea School of Iron and Steel Soochow UniversitySuzhou 215100China

In this study,the tensile creep behavior of a hot-rolled Mg-4Y-3.5Nd alloy subjected to different prior thermo-mechanical treatments was investigated at 220℃.Five groups of samples were prepared using different combinations of the solid solution(S),aging treatment at 220℃ for 30 h(A),and hot compression at 490℃ to a true strain of 0.25(C).The abbreviations for the samples are S,SA,SC,SAC,and *** examining the yield strength and creep resistance,it was found that creep resistance could not be directly predicted by the yield *** stability of the deformation bands(DBs)induced by prior thermo-mechanical treatment plays an important role in determining the creep *** dislocation of the DBs and demonstrated the best creep resistance in the SAC sample,which were prepared using a solid solution,aging treatment,and subsequent hot ***,despite the highest yield strength,frequent dislocation motions destroyed the stability of the DBs and deteriorated the creep resistance of the SCA sample,which were prepared using a solid solution,hot compression,and subsequent aging *** the thermo-mechanical treatments used in this study,the application of aging treatment was important to obtain the resultant creep *** the aging treatment was performed prior to hot compression,the creep resistance could be further enhanced based only on hot ***,the sequence from the strongest to the weakest creep resistance was SAC>SC>S>SCA>SA.

关键词： Mg-Y-Nd alloy Microstructure Deformation bands Creep Precipitation Dislocation

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Classification and Age Estimation of Fossil Shells from Ban Sap Noi Geopark in Thailand,through the material Characterization Techniques

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Journal of Wuhan University of Technology(materials science) 2025年第3期40卷 635-643页

作者： Sirikorn Pongtornkulpanich Patcharin Naemchanthara Kridsada Faksawat Weeranut Kaewwiset Pichet Limsuwan Kittisakchai Naemchanthara Department of Physics Faculty of ScienceKing Mongkut’s University of Technology ThonburiBangkok 10140Thailand Department of Material and Process Engineering Technology Faculty of Engineering and TechnologyKing Mongkut’s University of Technology North BangkokRayong CampusRayong 21120Thailand Division of Tuberculosis Department of Disease ControlMinistry of Public HealthBangkok 10120Thailand Division of Physics Department of Physical and Material SciencesFaculty of Liberal Arts and ScienceKaset-sart University(Kamphaeng-Saen Campus)Nakhon Pathom 73140Thailand

The fossil shells on the sedimentary rocks were collected from The Historical Park,Ban Sap Noi Geopark,Phetchabun Province,***,the fossils remained in this area were investigated on the characteristic species only in geological studies with taxonomy for fossil age *** fill up the gap of these studies,the material characterization techniques were used to study the chemical composition and structure of fossil shells I,II and *** results clearly showed that the morphologies of all fossil shells were Brachiopod fossils with different *** functional group and elemental composition of all fossil shells showed that the high content of calcium carbonate was a major *** addition,the high content of quartz indicated the silica precipitation phenomenon in all fossil *** element composition of cross-sectional morphology and energy dispersive spectroscope (EDS mapping) were used to confirm the presence of Si element in each zone of fossil *** crystal structures of all fossil shells were investigated and indicated that the calcium carbonate compound was a calcite phase and silicon dioxide compound was a quartz ***,the crystal structure of quartz phase was used to calculate the crystallinity *** crystallinity index values in all fossil shells indicated a well-crystallized *** age of fossil shells was estimated and found to be brachiopod fossil in carboniferous period with the age of about 359.2 to 299.0 million years.

关键词： fossil shell Ban Sap Noi Geopark crystallinity index fossil age carboniferous period

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Fabrication of Textured Ti2AlC-MAX Phase Ceramic by Slip Casting under Strong Magnetic Field and Spark Plasma Sintering, and Its Crystal Orientation Dependence of Room Temperature Deformation Behavior

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Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy 2024年第7期71卷 257-262页

作者： Muraoka, Johtaro Ikeda, Ken-Ichi Miura, Seiji Morita, Koji Suzuki, Tohru S. Sakka, Yoshio Division of Materials Science and Engineering Graduate School of Engineering Hokkaido University Kita 13 Nishi 8 Kita-ku Sapporo060-8628 Japan Division of Materials Science and Engineering Faculty of Engineering Hokkaido University Kita 13 Nishi 8 Kita-ku Sapporo060-8628 Japan National Institute for Material Science 1-2-1 Sengen Tsukuba305-0047 Japan

The properties of MAX phase ceramics that possess metallic and ceramic nature are anisotropic because of their hexagonal and layered crystal structure. Slip casting under a strong magnetic field followed by spark plasm sintering is one of the methods to control the orientation of the MAX phase ceramics. In this study, first, the textured Ti2AlC-MAX phase was fabricated by slip cast under 12 T, where the direction of magnetic field was fixed to the slip cast direction after clarifying the easily magnetizable axis of Ti2AlC. Second, the crystal orientation dependence of the room temperature deformation behavior was investigated by the Vickers hardness test from various orientations. It was found that the easily magnetizable axis of Ti2AlC was the c-axis and the textured body could be obtained by applying the magnetic field from one direction. In the room temperature deformation, Vickers indents show an anisotropic shape and the hardness changed depending on the loading direction against the c-axis due to different deformation modes such as kink deformation and slip deformation. For 0°, since the slip deformation was unlikely to occur, linear crack growth was observed to form from the indent. For 45°, on the other hand, since the slip deformation occurred relatively easily, the crack growth was suppressed through the stress relaxation due to the slip deformation. For 90°, although the slip deformation is unlikely to occur similar to 0°, the crack propagation was suppressed through pile-up due to kink deformations along the c-axis. It can be concluded that kink deformation prevents crack propagation and increases the fracture toughness of the textured Ti2AlC-MAX phase. © 2024 Japan Society of Powder and Powder Metallurgy.

关键词： Anisotropy

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Enhanced electromagnetic wave absorption via optical fiber-like PMMA@Ti_(3)C_(2)T_(x)@SiO_(2) composites with improved impedance matching

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Nano Research 2024年第3期17卷 1676-1686页

作者： Huanhuan Niu Xuewen Jiang Wei Li Zhiyu Min Budi Riza Putra Wulan Tri Wahyuni Hailong Wang Rui Zhang Bingbing Fan School of Material Science and Engineering Zhengzhou UniversityZhengzhou 450001China School of Materials Science and Engineering Tongji UniversityShanghai 201804China Department of Materials and Earth Sciences Technical University of DarmstadtDarmstadt 64287Germany School of Material Science and Engineering Luoyang Institute of Science and TechnologyLuoyang 471023China Research Center for Metallurgy National Research and Innovation Agency(BRIN)PUSPIPTEK Gd.470South TangerangBanten 15315Indonesia Analytical Chemistry Division Department of ChemistryFaculty of Mathematics and Natural SciencesIPB UniversityWest Java 16680Indonesia

Ti_(3)C_(2)T_(x) nanosheets have attracted significant attention for their potential in electromagnetic wave absorption(EWA).However,their inherent self-stacking and exorbitant electrical conductivity inevitably lead to serious impedance mismatch,restricting their EWA ***,the optimization of impedance matching becomes *** this work,we developed polymethyl methacrylate(PMMA)@Ti_(3)C_(2)T_(x)@SiO_(2) composites with a sandwich-like core–shell structure by coating SiO_(2) on PMMA@Ti_(3)C_(2)T_(x).The results demonstrate that the superiority of the SiO_(2) layer in combination with PMMA@Ti_(3)C_(2)T_(x),outperforming other relative graded distribution structures and meeting the requirements of EWA *** resulting PMMA@Ti_(3)C_(2)T_(x)@SiO_(2) composites achieved a minimum reflection loss of-58.08 dB with a thickness of 1.9 mm,and an effective absorption bandwidth of 2.88 *** analysis revealed that the structural design of SiO_(2) layer not only optimized impedance matching,but also synergistically enhanced multiple loss mechanisms such as interfacial polarization and dipolar ***,this work provides valuable insights for the future preparation of high-performance electromagnetic wave absorbing Ti_(3)C_(2)T_(x)-based composites.

关键词： polymethyl methacrylate(PMMA)@Ti_(3)C_(2)T_(x)@SiO_(2)composites impedance match SiO_(2)layer optical fiber-like structure interfacial polarization and dipolar polarization

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