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Journal of Traffic and Transportation Engineering(English Edition) 2024年第4期11卷 575-613页

作者： Leang So Khuong Nozomu Hashimoto Osamu fujita Division of Mechanical and Aerospace Engineering Faculty of EngineeringHokkaido UniversitySapporo 060-8628Japan faculty of Automotive Engineering National Polytechnic Institute of CambodiaPhnom Penh 120901Cambodia

This review examines the potential of hydrogen,ammonia,and biodiesel as alternative fuels,focusing on spray dynamics,droplet evaporation,combustion,and *** offers superior combustion characteristics but faces challenges in NO_(x)*** like nonpremixed direct injection,increased intake boost pressure,and low-pressure EGR are suggested for robust hydrogen combustion in compression-ignition *** of hydrogen start of injection(SOI)and water injection(WI)are identified as effective techniques for reducing NO_(x)*** shows inferior combustion and higher NO_(x)and unburned NH_(3)emissions in the same conditions as conventional fuels with conventional *** ammonia spray and evaporation conditions is significant for optimizing an ammonia-air mixture and minimizing wall impingement and ammonia trap in the crevice,thereby improving combustion and emission *** intake pressure,injection pressure,and EGR rate,employing a turbulent jet,and preheating ammonia improve efficiency and reduce NO_(x)*** ammonia combustion requires the implementation of after-treatment systems such as NH_(3)adsorber and De NO_(x)catalysts to mitigate unburned NH_(3)and NO_(x)*** affects the fuel supply system,combustion,and emission characteristics according to its viscosity and *** injection pressure and blending with volatile fuels enhance spray and *** biodiesel preheating temperatures for the injection pump and injector are crucial for achieving the best pump capacity and spray *** utilizing biodiesel-PODE blends and investigating low-temperature biodiesel combustions,there is potential to improve thermal efficiency and PMNO_(x)***,carbon-neutral fuel adoption should be accelerated to mitigate CO_(2)emissions,highlighting the importance of combustion techniques and emissions reduction strategies.

关键词： Carbon-neutral fuels Spray formation Droplet evaporation Injection strategies Combustion efficiency Emission reduction

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Solvent extraction of scandium from leaching solution of red mud roasted with ammonium sulfate using D2EHPA/TBP

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Journal of Rare Earths 2024年第10期42卷 1943-1949页

作者： fucheng Li Xinsheng Li Lei Shi Xiang Li Duoqiang Liang Yuezhou Wei Toyohisa fujita School of Resources Environment and MaterialsGuangxi University State Key Laboratory of featured Metal Materials and Life-cycle Safety for Composite Structures Guangxi University School of Nuclear Science and Technology University of South China

Red mud is an important secondary resource for scandium *** red mud leaching solution containing scandium in this study was derived from environmentally friendly ammonium sulfate roasting and water leaching process.A synergistic extraction with a mixture of di（2-ethylhexyl） phosphate acid（D2EHPA） and tributyl phosphate（TBP） for recovery of scandium from red mud leaching solution is *** effects of D2EHPA concentration,H2SO4concentration,rare earth elements,dosage of TBP,phase ratio（A/O）,contact time and H2O2concentration on scandium extraction were *** results show that more than 99% scandium is extracted under the optimal conditions while fe,Al,Ti,Ca and rare earth elements（Ce,Y,La,Nd,Er,etc.） are hardly *** stripping efficiency of Sc reaches above 92.37% under the optimal stripping conditions of 5 mol/L NaOH with an A/O of 1 at 90℃ for 30 *** proposed technology could provide an effective method for extraction of scandium from red mud leaching solution.

关键词： D2EHPA/TBP Rare earths Red mud leaching solution Scandium Solvent extraction

Moving doubly heavy baryon in a strongly coupled plasma via holography

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Chinese Physics C 2024年第8期48卷 42-55页

作者： Xuan Liu Jia-Jie Jiang Xun Chen Mitsutoshi fujita Akira Watanabe School of Nuclear Science and Technology University of South ChinaHengyang 421001China School of Mathematics and Physics University of South ChinaHengyang 421001China

Gauge/gravity duality is used to study the properties of the doubly heavy baryon(QQq)at finite rapidity and temperature in heavy-ion *** investigate the impact of rapidity on string breaking and screening of QQq and compare these effects with the results for QQ¯in *** reveal that the string-breaking distances of QQq and QQ¯are close in the confined state,and the effects of rapidity and temperature on the string breaking are not *** interesting result shows that QQq cannot be determined at sufficiently high temperatures and ***,QQ¯can exist under any conditions as long as the separation distance is sufficiently ***,the screening distances of QQq and QQ¯are compared at finite rapidity and *** on the above analysis,we infer that QQ¯is more stable than QQq at finite rapidity and temperature.

关键词： holographic QCD QGP heavy quark

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Precise separation and efficient recovery of Pd(Ⅱ) from high-level liquid waste by XAD-based adsorbents

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Rare Metals 2024年第10期43卷 5372-5390页

作者： Hao-Ran Dong Shun-Yan Ning Zeng-Yuan Li Si-Zhi Xu feng-Tao Hu feng Gao You-Bin Wang Li-feng Chen Xiang-Biao Yin Toyohisa fujita Mohammed f.Hamza Yue-Zhou Wei School of Resources Environment and MaterialsGuangxi University School of Nuclear Science and Technology University of South China

Efficient separation of palladium (Pd（II）) from high-level liquid waste （HLLW） not only helps the safe disposal of nuclear waste,but also is a vital importan supplement to Pd（II） ***,16 kinds of nove Amberlite XAD resins-based adsorbents were prepared by vacuum impregnation method for the separation of Pd（II）from simulated HLLW,and the MMBT/XAD7HP prepared using 4-methyl-2-mercaptobenzothiazole （MMBT） as ligand and Amberlite XAD7HP resin （XAD7HP） as the carrier was selected as the optimal research *** analysis experiments proved the successful preparation of MMBT/XAD7HP,which exhibited ultrahigh adsorption selectivity for Pd（II）(distribution coefficient （Kd）≥12584.5 ml·g-1,separation factor (SfPd/M)≥2818.4) and superior adsorption capacity(Q≥130.1 mg·g-1).The adsorption kinetics and adsorption isotherms for Pd（II） matched with pseudo-secondorder （PSO） kinetics model and Langmuir model,indicating that the adsorption mode for Pd（II） by MMBT/XAD7 HP was monolayer chemical *** dynamic column experiments showed that MMBT/XAD7 HP achieved efficiently separation of Pd（II） from simulated HLLW,and the recovery rate was nearly 100% The adsorption mechanism was analyzed by fourier transform infrared spectroscopy （fTIR）,X-ray photoelectron spectroscopy （XPS） and density functional theory（DfT）,and the ultrahigh selectivity of MMBT/XAD7 HP is attributed to the preferred affinity of the soft-N,S donor atoms in MMBT for Pd（II）.MMBT has the shortest frontline molecular orbital energy band gap （HOMO–LUMO） among the four ligands,which makes it easier to become an electron donor to attract Pd2+to participate in ***3-participates in the adsorption to keep charge *** summary,MMBT/XAD7 HP has broad application prospects for the treatment of Pd（II） in HLLW

关键词： Adsorption Column experiments HLLW Palladium XAD

A functionalized activated carbon adsorbent prepared from waste amidoxime resin by modifying with H_(3)PO_(4) and ZnCl_(2) and its excellent Cr(Ⅵ)adsorption

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International Journal of Minerals,Metallurgy and Materials 2024年第3期31卷 585-598页

作者： Chunlin He Yun Liu Mingwei Qi Zunzhang Liu Yuezhou Wei Toyohisa fujita Guifang Wang Shaojian Ma Wenchao Yang School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China State Key Laboratory of featured Metal Materials and Life-cycle Safety for Composite Structures Guangxi UniversityNanning 530004China School of Nuclear Science and Technology University of South ChinaHengyang 421000China School of Nuclear Science and Engineering Shanghai Jiao Tong UniversityShanghai 200240China Key Laboratory of New Low-carbon Green Chemical Technology Education Department of Guangxi Zhuang Autonomous RegionNanning 530004China

With the application of resins in various fields, numerous waste resins that are difficult to treat have been produced. The industrial wastewater containing Cr(Ⅵ) has severely polluted soil and groundwater environments, thereby endangering human health. Therefore, in this paper, a novel functionalized mesoporous adsorbent PPR-Z was synthesized from waste amidoxime resin for adsorbing Cr(Ⅵ). The waste amidoxime resin was first modified with H3PO4 and ZnCl_(2), and subsequently, it was carbonized through slow thermal decomposition. The static adsorption of PPR-Z conforms to the pseudo-second-order kinetic model and Langmuir isotherm, indicating that the Cr(Ⅵ) adsorption by PPR-Z is mostly chemical adsorption and exhibits single-layer adsorption. The saturated adsorption capacity of the adsorbent for Cr(Ⅵ) could reach 255.86 mg/g. The adsorbent could effectively reduce Cr(Ⅵ) to Cr(Ⅲ) and decrease the toxicity of Cr(Ⅵ) during adsorption. PPR-Z exhibited Cr(Ⅵ) selectivity in electroplating wastewater. The main mechanisms involved in the Cr(Ⅵ) adsorption are the chemical reduction of Cr(Ⅵ) into Cr(Ⅲ) and electrostatic and coordination interactions. Preparation of PPR-Z not only solves the problem of waste resin treatment but also effectively controls Cr(Ⅵ) pollution and realizes the concept of “treating waste with waste”.

关键词： waste amidoxime resin mesoporous adsorbent H_(3)PO_(4)and ZnCl_(2)processing Cr(VI)adsorption electroplating wastewater

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Bi_(2)O_(3)/g-C_(3)N_(4)hollow core–shell Z-scheme heterojunction for photocatalytic uranium extraction

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Nano Research 2024年第7期17卷 5845-5855页

作者： Hao fu Yuehua Pan Zhenyu Cai Yuxiang Deng Minchen Hou Yuezhou Wei Toyohisa fujita Shunyan Ning Youbin Wang Shaolong Zhang Xinpeng Wang School of Chemistry&Chemical Engineering Guangxi UniversityNanning 530004China School of Resources Environment and MaterialsGuangxi UniversityState Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite StructuresNanning 530004China College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060China School of Materials Sun Yat-sen UniversityShenzhen 518107China School of Nuclear Science and Technology University of South ChinaHengyang 421001China

Photocatalytic uranium extraction from radioactive nuclear wastewater and seawater is critical for promoting the sustainable advancement of nuclear industry,but the complexity of real-world environments,particularly the occurrence of anoxic and oxygen-enriched states,presents significant challenges to effective uranium ***,a layered hollow core–shell structure of Bi_(2)O_(3)/g-C_(3)N_(4)Z-scheme heterojunction photocatalyst has been designed and successfully applied for photocatalytic uranium extraction in both aerobic and oxygen-free conditions,and the extraction efficiency of uranium can reach 98.4%and 99.0%,***,the photocatalyst still has ultra-high extraction efficiency under the influence of pH,inorganic ions,and other *** exceptional capability for uranium extraction is on the one hand due to the distinctive hollow core–shell architecture,which furnishes an abundant quantity of active *** the other hand,benefiting from the suitable band gap structure brought by the construction of Z-scheme heterojunction,Bi_(2)O_(3)/g-C_(3)N_(4)exhibits current densities(1.00μA/cm^(2))that are 5.26 and 3.85 times greater than Bi_(2)O_(3)and g-C_(3)N_(4),respectively,and the directional migration mode of Z-scheme carriers significantly prolongs the lifetime of photogenerated charges(1.53 ns),which separately surpass the pure samples by factors of 5.10 and ***,the reaction mechanism and reaction process of photocatalytic uranium extraction are investigated in the presence and absence of oxygen,respectively.

关键词： Bi_(2)O_(3)/g-C_(3)N_(4) Z-scheme photocatalytic uranium extraction

High energy storage density in NaNbO_(3) antiferroelectrics with double hysteresis loop

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Journal of Materiomics 2024年第5期10卷 1026-1035页

作者： Li Ma Zhenpei Chen Gengguang Luo Zhiyi Che Chao Xu Dongliang Shan Zhenyong Cen Qin feng Xiyong Chen Toyohisa fujita Ye Zhu Yunya Liu Jing-feng Li Shujun Zhang Nengneng Luo State Key Laboratory of featured Metal Materials and Life-cycle Safety for Composite Structures School of ResourcesEnvironment and MaterialsGuangxi UniversityNanning530004China School of Chemistry and Chemical Engineering Guangxi UniversityNanning530004China Department of Applied Physics Research Institute for Smart EnergyThe Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education School of Materials Science and EngineeringXiangtan UniversityXiangtan411105HunanChina State Key Laboratory of New Ceramics and fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing100084China Institute for Superconducting and Electronic Materials Australian Institute of Innovative MaterialsUniversity of WollongongWollongongNSW2500Australia

Antiferroelectrics(AfEs)possess great potential for high performance dielectric capacitors,due to their distinct double hysteresis loop with high maximum polarization and low remnant ***,the well-known NaNbO3 lead-free antiferroelectric(AfE)ceramic usually exhibits square-like P–E loop related to the irreversible AfE P phase to ferroelectric(fE)Q phase transition,yielding low recoverable energy storage density(Wrec).Herein,significantly improved Wrec up to 3.3 J/cm^(3) with good energy storage efficiency(η)of 42.4% was achieved in Na_(0.7)Ag_(0.3)Nb_(0.7)Ta_(0.3)O_(3)(30Agsingle bond30Ta)ceramic with well-defined double P–E loop,by tailoring the A-site electronegativity with Ag+and B-site polarizability with Ta^(5+).The Transmission Electron Microscope,Piezoresponse force Microscope and in-situ Raman spectra results verified a good reversibility between AfE P phase and high-field-induced fE Q *** improved stability of AfE P phase,being responsible for the double P–E loop and improved Wrec,was attributed to the decreased octahedral tilting angles and cation *** mechanism was revealed by synchrotron X-ray diffraction and Scanning Transmission Electron *** work provides a good paradigm for achieving double P–E loop and high energy storage density in NaNbO_(3)-based ceramics.

关键词： Sodium niobate Antiferroelectrics Double hysteresis loop Energy storage performance Reversibility

Initial experience with robot-assisted adrenalectomy for giant adrenal tumors

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Asian Journal of Urology 2024年第3期11卷 507-508页

作者： Takayuki Ohzeki Hiroyuki Kita Remon Kunishige Taiji Hayashi Tsukasa Nishioka Koichi Sugimoto Takafumi Minami Kazutoshi fujita Department of Urology Izumi City General Hospital4-5-1 WakechoIzumiOsaka 594-0073Japan Department of Urology Kaizuka City Hospital10-20 Hori 3-chomeKaizukaOsaka 594-0073Japan Department of Urology Kindai University Faculty of Medicine377-2 Ohno-HigashiOsaka-SayamaOsaka 589-8511Japan

Dear Editor,Adrenocortical carcinomas and adrenal cysts,including pseudocysts,are uncommon tumors[1,2].No consistent approach to surgery for large adrenal tumors including cysts,has been established,and especially when malignancy is suspected,consideration is still given to the option of *** robot-assisted surgery,we successfully performed the resection of a giant adrenal pseudocyst and a giant adrenocortical carcinoma,as reported previously[3],underlining the advantages of robot-assisted surgery for large adrenal tumors.

关键词： adrenal tumors surgery

EffECTIVE AUTOMATED NEGOTIATION BASED ON ISSUE DENDROGRAMS AND PARTIAL AGREEMENTS

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Journal of Systems Science and Systems Engineering 2018年第2期27卷 201-214页

作者： ShinjiKakimoto Katsuhide fujita Institute of Engineering Tokyo University of Agriculture and Technology

Negotiation is both an important topic in multi-agent systems research and an important aspect of daily life. Many real-world negotiations are complex and involve multiple interdependent issues, therefore, there has been increasing interest in such negotiations. Existing nonlinear automated negotiation protocols have difficulty in finding solutions when the number of issues and agents is large. In automated negotiations covering multiple independent issues, it is useful to separate out the issues and reach separate agreements on each in turn. In this paper, we propose an effective approach to automated negotiations based on recursive partitioning using an issue dendrogram. A mediator first finds partial agreements in each sub-space based on bids from the agents, then combines them to produce the final agreement. When it cannot find a solution, our proposed method recursively decomposes the negotiation sub-problems using an issue dendrogram. In addition, it can improve the quality of agreements by considering previously-found partial consensuses. We also demonstrate experimentally that our protocol generates higher-optimality outcomes with greater scalability than previous methods.

关键词： Multi-issue negotiation issue dendrogram partial agreement