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Recent Advances in Catalytic Carbonylation Reactions in Alternative Reaction Media

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Chinese Journal of Chemistry 2024年第4期42卷 406-429页

作者： Csaba Árvai László T.mika Department of Chemical and Environmental Process Engineering Faculty of Chemical Technology and BiotechnologyBudapest University of Technology and EconomicsMűegyetem rkp.3H-1111 BudapestHungary

Since the discovery of the hydroformylation(oxo-synthesis or Roelen reaction)and the Reppe-reaction,the transition metal-catalyzed carbonylation reactions,providing versatile,facile,and even atom-economic methods for the selective incorporation of C=O functionality to various skeletons,have gained tremendous importance in synthetic organic chemistry from laboratories to industrial *** carbonylation of carbon-carbon multiple bonds,aromatic halides,triflates,etc.,in the presence of various nucleophiles has led the way to produce aldehydes,carboxylic acids,esters,amides,etc.,in the fine chemical ***,these protocols usually proceed in conventional,fossil-based,and usually toxic reaction ***,several attempts have been directed to developing efficient carbonylation methods in alternative,less harmful,non-fossil-based and even in renewable reaction *** this review,we overview the recent applications of alternative solvents such as water,biomass-based alcohols,γ-valerolactone(GVL),2-methyltetrahydrofuran(2-MeTHF),ionic liquids(ILs),deep eutectic solvents(DES),alkyl levulinates,limonene,α-pinene,and dimethyl carbonate as well as fluorous media to improve efficiency,safety and environmentally benign nature of carbonylation protocols.

关键词： Carbonylation Catalysis Solvents Green chemistry Carbon monoxide Transition metals Homogeneous catalysis Palladium

Automating selective area electron diffraction phase identification using machine learning

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Journal of Materiomics 2024年第4期10卷 896-905页

作者： M.mika N.Tomczak C.Finney J.Carter A.Aitkaliyeva Nuclear Engineering Program in Department of Materials Science University of Florida100 Rhines HallGainesville32611FLUSA Department of Materials Science&Engineering Case Western Reserve University2111 Martin Luther King Jr DrCleveland44106OHUSA

Selective area electron diffraction(SAED)patterns can provide valuable insight into the structure of a ***,the manual identification of collected patterns can be a significant bottleneck in the overall phase classification *** this work,we utilize the recent advances in computer vision and machine learning(ML)to automate the indexing of SAED *** performance of six different ML algorithms is demonstrated using metallic plutonium-zirconium *** most successful approach trained a neural network(NN)to make a classification of the phase and zone axis,and then utilized a second NN to synthesize multiple independent predictions of different tilts in a single sample to make an overall phase *** results demonstrate that automated SAED phase identification using ML is a viable route to accelerate materials characterization.

关键词： Selective area electron diffraction Machine learning Phase identification Metallic fuels Pu alloys

Measuring Impact of Lean Manufacturing Tools for Continuous Improvement on Economic Sustainability

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Journal of Systems Science and Systems Engineering 2024年第4期33卷 452-474页

作者： Luis Javier Márquez Figueroa Jorge Luis García-Alcaraz Ahmed I.Osman Alfonso Jesús Gil López Yashar Aryanfar mika Sillanpää Mamdouh El Haj Assad Department of Electrical Engineering and Computer Science Universidad Autónoma de Ciudad JuárezCiudad JuárezChihuahuaMéxico Department of Industrial Engineering and Manufacturing Universidad Autónoma de Ciudad JuárezCiudad JuárezChihuahuaMéxico School of Chemistry and Chemical Engineering Queens UniversityBelfastNorthern IrelandUK Department of Economic and Managerial Sciences University of La RiojaLa RiojaSpain Department of Chemical Engineering University of JohannesburgJohannesburgSouth Africa Department of Sustainable and Renewable Energy Engineering University of SharjahSharjahUAE

Using Lean Manufacturing(LM)tools in production processes is crucial for companies’economic,environmental,and social sustainability *** study shows a structural equation model(SEM)that shows the relationship between LM Tools like Kaizen(KAI),Gemba(GEM),Value Stream Mapping(VSM)and Key Performance Indicator(KPI)with Economic Sustainability(ECS).Seven hypotheses were evaluated with data from 179 responses to a questionnaire about the Mexican maquiladora industry,showing that these variables are *** a 95%confidence level,the model was evaluated using the partial least squares *** findings indicate that the relationships between KAI and GEM and KAI and VSM have the strongest relationship,followed by VSM and ECS;however,VSM has the strongest effect on *** on these findings,it is recommended that managers adopt a continuous improvement(KAI)approach based on working directly on the shop floor(GEM and VSM)to support their decisions regarding economic growth(ECS).

关键词： Lean manufacturing economic sustainability structural equation model quality improvement

Immunotherapy for esophageal cancer:Where are we now and where can we go

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World Journal of Gastroenterology 2024年第19期30卷 2496-2501页

作者： Yoshiaki Shoji Kazuo Koyanagi Kohei Kanamori Kohei Tajima mika Ogimi Yamato Ninomiya Miho Yamamoto Akihito Kazuno Kazuhito Nabeshima Takayuki Nishi Masaki Mori Department of Gastroenterological Surgery Tokai University School of MedicineKanagawa 259-1193Japan

Immune checkpoint inhibitor therapy has dramatically improved patient prognosis,and thereby transformed the treatment in various cancer types including esophageal squamous cell carcinoma(ESCC)in the past *** antibodies that selectively inhibit programmed cell death-1(PD-1)activity has now become standard of care in the treatment of ESCC in metastatic settings,and has a high expectation to provide clinical benefit during perioperative ***,anti-cytotoxic T-lymphocyte–associated protein 4(CTLA-4)monoclonal antibody has also been approved in the treatment of recurrent/metastatic ESCC in combination with anti-PD-1 *** understanding of the existing evidence of immune-based treatments for ESCC,as well as recent clinical trials on various combinations with chemotherapy for different clinical settings including neoadjuvant,adjuvant,and metastatic diseases,may provide future prospects of ESCC treatment for better patient outcomes.

关键词： Esophageal cancer Immunotherapy Immune checkpoint inhibitor Programmed cell death-1 Anti-cytotoxic T-lymphocyte-associated protein 4 Neoadjuvant therapy Adjuvant therapy Clinical trials Combination therapy

Relationship between Nonexercise Activity Thermogenesis and Calf Circumference in Older Women

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Open Journal of Therapy and Rehabilitation 2024年第3期12卷 213-223页

作者： Michio Wachi Takumi Jiroumaru mika Suzuki Shinichi Noguchi Ayako Satonaka Department of Physical Therapy Bukkyo University Kyoto City Japan Department of Physical Therapy Biwako Professional University of Rehabilitation Higashiomi City Japan Graduate School of Medicine Nagoya University Nagoya City Japan Faculty of Health and Medical Science Aichi Syukutoku University Nagakute City Japan

Purpose: Frailty is a state of declined vitality of the body and mind with age in which life functions are impaired. In addition, there is a difference in the susceptibility of older women to frailty compared with that of older men. Therefore, assessing and encouraging physical activity in older adults before they become frail is essential. We aimed to clarify the relationship between calf circumference and body composition and assess the potential association between calf circumference and physical activity indices in older women. Methods: This cross-sectional study included 18 healthy older adults (age 69.0 ± 5.7 years). The physical characteristics, calf circumference, body composition, calf muscle thickness, and physical activity questionnaire that included items on exercise-related activity thermogenesis (EAT) and nonexercise activity thermogenesis (NEAT) were assessed. The association between calf circumference and these additional measures was examined. Results: Positive and significant correlations were found between the calf circumference and body weight, body mass index (BMI), skeletal muscle mass, skeletal muscle mass index, calf muscle thickness, total questionnaire score, and NEAT score (r = 0.66 - 0.87). However, no significant correlations were observed between the calf circumference and EAT scores. Conclusion: Calf circumference in older women may reflect NEAT activity. Improving NEAT activity is an important health-promoting factor in older women.

关键词： Nonexercise Activity Thermogenesis Frailty Calf Circumference Older Women

Nitrogen resorption and fractionation during leaf senescence in typical tree species in Japan

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Journal of Forestry Research 2020年第6期31卷 2053-2062页

作者： Ayako Enta mika hayashi Maximo Larry Lopez Caceres Lei Fujiyoshi Toshiro Yamanaka Akira Oikawa Felix Seidel Faculty of Agriculture Yamagata UniversityWakabamachi 1-23Tsuruoka 997-8555Japan Research Institute for Humanity and Nature Motoyama 457-4KamigamoKita-kuKyoto 603-8047Japan Department of Ocean and Environmental Sciences Tokyo University of Marine Science and Technology4-5-7 Konan Minato-kuTokyo 108-8477Japan

In northeastern Japan,an area of high precipitation and mountains,beech(Fagus creanata Blume),larch(Larix kaempferi Lamb.),cedar(Cryptomeria japonica ***)and black locust(Robinia pseudoacacia L.)were evaluated for N resorption and N isotope fractionation in preand post-abscission leaves in comparison to green *** highest leaf N concentration in summer corresponded to the N-fi xing black locust,followed in decreasing order by the deciduous beech and larch and evergreen *** the other hand,the lowest N resorption effi ciency corresponded to black locust and the highest to beech,in increasing order by larch and *** tree species returned signifi cant amounts of N before leaf abscission;however,N isotope fractionation during leaf N resorption was only found for beech,with a depleted N isotope value from green to pre-abscission *** most N,however,was resorbed from pre-abscission to *** result may indicate thatδ15 N fractionation took place during N transformation processes,such as protein hydrolysis,when the concentration of free amino acids increased *** diff erence in the type of amino acid produced by each species could have infl uenced the N isotope ratio in beech but not in the other tree *** results of this study showed that it is possible to infer the type and timing of processes relevant to N resorption by analyzing leafδ15 N variation during senescence.

关键词： Amino acids Cool temperate forest Fresh litter N resorption δ15 N

Zinc-Based Metal-Organic Frameworks for High-Performance Supercapacitor Electrodes:Mechanism Underlying Pore Generation

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Energy & Environmental Materials 2023年第2期6卷 100-112页

作者： Shigeyuki Umezawa Takashi Douura Koji Yoshikawa Daisuke Tanaka Vlad Stolojan S.Ravi P.Silva mika Yoneda Kazuma Gotoh Yasuhiko hayashi Seiwa Electric Mfg.Co.Ltd. Kyoto 610-0192Japan Graduate School of Natural Science and Technology Okayama UniversityOkayama 700-8350Japan School of Science and Technology Kwansei Gakuin UniversityHyogo 669-1337Japan JST PRESTO2-1 GakuenHyogo 669-1337Japan Advanced Technology Institute University of SurreyGuilfordSurreyGU27XHUK

Heat treatment of metal-organic frameworks(MOFs)has provided a wide variety of functional carbons coordinated with metal *** this study,two kinds of zinc-based MOF(ZMOF),C_(16)H_(10)O_(4)Zn(ZMOF1)and C_(8)H_(4)O_(4)Zn(ZMOF2),were ***1 and ZMOF2 were carbonized at 1000℃,forming CZMOF1 and CZMOF2,*** specific surface area(S_(BET))of CZMOF2 was~2700 m^(2)g^(−1),much higher than that of CZMOF1(~1300 m^(2)g^(−1)).A supercapacitor electrode based on CZMOF2 achieved specific capacitances of 360,278,and 221 F g^(−1)at 50,250,and 1000 mA g^(−1)in an aqueous electrolyte(H2SO_(4)),respectively,the highest values reported to date for ZMOF-derived electrodes under identical *** practical applicability of the CZMOF-based supercapacitor was verified in non-aqueous *** initial capacitance retention was 78%after 100000 charge/discharge cycles at 10 A g^(−1).Crucially,the high capacitance of CZMOF2 arises from pore generation during *** 1000℃,pore generation is dominated by the Zn/C ratio of ZMOFs,as carbon atoms reduce the zinc oxides formed during *** 1000℃,a high O/C ratio becomes essential for pore generation because the oxygen functional groups are *** findings will provide insightful information for other metal-based MOFderived multifunctional carbons.

关键词： metal-organic frameworks pore generation porous carbons supercapacitor zinc oxides

Synthesis of malachite@clay nanocomposite for rapid scavenging of cationic and anionic dyes from synthetic wastewater

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Journal of Environmental Sciences 2017年第1期29卷 97-110页

作者： Varsha Srivastava mika Sillanpää Laboratory of Green Chemistry School of Engineering ScienceLappeenranta University of TechnologySammonkatu 12FI 50130MikkeliFinland

Synthesis of malachite@clay nanocomposite was successfully carried out for the removal of cationic（Methylene Blue,MB） and anionic dyes（Congo Red,CR） from synthetic *** was characterized by TEM,SEM,FT-IR,EDS analysis and zeta *** analysis indicated that the particle diameter of nanocomposite was in the range of 14 to23 *** important parameters *** time,concentration of dyes,nanocomposite dosage,temperature and solution pH were optimized to achieve maximum adsorption *** the case of MB,removal decreased from 99.82%to 93.67%while for CR,removal decreased from 88.55%to 75.69%on increasing dye concentration from 100 to 450 mg/*** study confirmed the higher removal of CR in acidic range while MB removal was higher in alkaline *** study revealed the applicability of pseudo-second-order model for the adsorption of both *** values of AG0 for both systems suggested the feasibility of dye removal and support for spontaneous adsorption of CR and MB on *** showed 277.77 and 238.09 mg/g Langmuir adsorption capacity for MB and CR *** of dyes from the dye loaded nanocomposite was easily carried out with *** results indicate that the prepared malachite@clay nanocomposite is an efficient adsorbent with high adsorption capacity for the aforementioned dyes.

关键词： Adsorption Bentonite Dyes Kinetic study Methylene blue Congo red

On the Function of Wall Sculpturing in Xylem Conduits

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Journal of Bionic Engineering 2009年第4期6卷 324-329页

作者： mika M.Kohonen se Helland Department of Physical Sciences University of HullCottingham RoadHU6 7RX UK

The water-conducting network of capillaries in vascular plants has evolved over hundreds of millions of years in order to be able to cope with bubble clogging,a problem which also affects modern microfluidic *** of anatomical studies have revealed that plants growing in habitats in which the formation of bubbles,or emboli,is likely to be a frequent occurrence often have various forms of geometrical sculpturing on the internal surfaces of the xylem *** possible function of such wall sculpturing has long been the subject of *** have investigated the hypothesis that wall sculpturing is a functional adaptation designed to increase the wettability of the walls of xylem conduits,an effect which could be described as the inverse of the well-known *** results show that wall sculpturing does enhance ***,theoretical calculations reveal that the geometric parameters of various types of wall sculpturing are such that the resulting surfaces are sufficiently rough to enhance wettability,but not significantly *** results provide an appealing answer to the long-standing debate on the function of wall sculpturing in xylem conduits,and may provide biomimetic clues for new approaches to the removal of bubbles in microfluidic channels.

关键词： xylem wettability capillary wall sculpturing bubble emboli microfluidic