检索结果-南通市图书馆

Carbon Resources Conversion 2023年第1期6卷 43-50页

作者： Pedro Domingos Dauce Ryo Suzuki Ayano Nakamura Kenji murakami Department of Material Science Graduate School of Engineering ScienceAkita University1-1 Tegata Gakuen-tyoAkita-shiAkita 010-8502Japan

A degradative solvent extraction method for upgrading low-rank coal was performed at 200-350◦C for 90 min to obtain a substance dissolved in the solvent at room temperature(Soluble).Because the resulting mixture exhibited a high carbon content without ash,it could be readily used as a ***,deep eutectic solvents(DESs)have attracted attention for improving the Soluble yield and decreasing the oxygen content in *** is known to cleave oxygen-containing functional groups in biomass and is considered effective for deoxidizing low-rank ***,DES was prepared by mixing choline chloride,FeCl3⋅6H2O,and Adaro subbituminous coal(AD)and then added to 1-methylnaphthalene(1-MN)in a non-polar solvent,followed by degradative solvent extraction in the range of 200-350◦*** effects of reaction temperature and added DES amount on the product yield and the composition were *** the reaction temperature and amount of DES added increased,the Soluble yield and carbon content *** was also found that the thermal decomposition temperature and oxygen content decreased with the increasing DES *** decrease indicates that DES promotes the deoxygenation and decomposition of AD and increases the soluble yield of the fuel source.

关键词： Low-rank coal Degradative solvent extraction Deep eutectic solvent Reaction temperature Upgrading

High-performance solutions of geographically weighted regression in R

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Geo-Spatial Information Science 2022年第4期25卷 536-549页

作者： Binbin Lu Yigong Hu Daisuke murakami Chris Brunsdon Alexis Comber Martin Charlton Paul Harris School of Remote Sensing and Information Engineering Wuhan UniversityWuhanChina Department of Data Science Institute of Mathematical StatisticsTokyoJapan National Centre for Geocomputation Maynooth UniversityMaynoothIreland School of Geography University of LeedsLeedsUK Sustainable Agriculture Sciences North Wyke Rothamsted ResearchOkehamptonUK

As an established spatial analytical tool,Geographically Weighted Regression(GWR)has been applied across a variety of ***,its usage can be challenging for large datasets,which are increasingly prevalent in today’s digital *** this study,we propose two high-performance R solutions for GWR via Multi-core Parallel(MP)and Compute Unified Device Architecture(CUDA)techniques,respectively GWR-MP and *** compared GWR-MP and GWR-CUDA with three existing solutions available in Geographically Weighted Models(GWmodel),Multi-scale GWR(MGWR)and Fast GWR(FastGWR).Results showed that all five solutions perform differently across varying sample sizes,with no single solution a clear winner in terms of computational ***,solutions given in GWmodel and MGWR provided acceptable computational costs for GWR studies with a relatively small sample *** a large sample size,GWR-MP and FastGWR provided coherent solutions on a Personal Computer(PC)with a common multi-core configuration,GWR-MP provided more efficient computing capacity for each core or thread than *** cases when the sample size was very large,and for these cases only,GWR-CUDA provided the most efficient solution,but should note its I/O cost with small *** summary,GWR-MP and GWR-CUDA provided complementary high-performance R solutions to existing ones,where for certain data-rich GWR studies,they should be preferred.

关键词： Non-stationarity big data parallel computing Compute Unified Device Architecture(CUDA) Geographically Weighted models(GWmodel)

Potential Power of the Pyramidal Structure VI: Pyramid Effects due to Potential Power and Pyramid Effects due to Bio-Entanglement

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Natural Science 2022年第6期14卷 251-263页

作者： Osamu Takagi Masamichi Sakamoto kimiko Kawano Mikio Yamamoto International Research Institute (IRI) Chiba Japan Aquavision Academy Chiba Japan

Research on the so-called “pyramid power” began in the late 1930s. However, in general, pyramid power has been regarded as having no scientific basis, so there are very few systematic papers on pyramid power other than our academic research papers. Since October 2007, we have been conducting research to experimentally elucidate the unexplained phenomenon of a pyramid by using a pyramidal structure (PS). There have been two main types of experiments: (i) an experiment to detect the pyramid effects that appear due to the potential power (pyramid power) that the PS inherently has;and (ii) an experiment to detect the pyramid effects that appear when a test subject meditates inside the PS. To detect the pyramid effects, biosensors with evenly cut cucumber fruits, Cucumis sativus, were used. As a result of analyzing the concentration of volatile components emitted from the biosensors, we demonstrated the existence of pyramid power near the PS apex and discovered that the PS has the function of converting the unexplained energy of the meditator test subject. The research results so far have been reported as eleven original papers, three comprehensive reports, and one book chapter. We reported the phenomenon of the entanglement between biosensors in parts IV and V of the paper series, “Potential Power of the Pyramidal Structure”. Furthermore, we clarified that the influence of the entanglement is included in the psi index Ψ, which is an index of the magnitude of the pyramid effects. The purpose of the present paper was to separate and analyze the psi index Ψ into the effect of the potential power of the PS and the effect of the entanglement between biosensors (we have named this as the Bio-Entanglement). To do this, we placed biosensors at the PS apex in two layers. The value of the pyramid effect on the biosensors in the upper layer was always larger than that in the lower layer. We found that this was mainly due to the potential power of the PS. We also found that the fac

关键词： Pyramid Potential Power Entanglement Biosensor Cucumis sativus Gas Psi Index

Precision Synthesis of End-Functionalized Star Poly(vinyl alcohol)s by RAFT Polymerization and Post-polymerization Modification

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Precision Chemistry 2023年第4期1卷 256-263页

作者： Gaishi murakami Tomohiro Kubo Kotaro Satoh Department of Chemical Science and Engineering Tokyo Institute of TechnologyMeguro-kuTokyo 152-8550Japan

Poly(vinyl alcohol)(PVA)has been widely used in industrial and consumer *** this study,we aimed to address this challenge by synthesizing well-defined multiarm poly(vinyl acetate)(PVAc)through the use of nonhydrolyzable vinyl ethertype multifunctional RAFT *** control over molecular weights was achieved by the RAFT process to afford polymers with dominant head-to-head linkages at the ***,quantitative end-functionalization of the synthesized PVAc was performed using Michael thiol−ene or disulfide exchange ***,saponification of the PVAc enabled the synthesis of end-functionalized multiarm PVA in an efficient *** straightforward approach afforded well-defined functional PVAs,which enable further chemical modification,thus widening the utility of PVA in a range of applications,such as precisely controlled network synthesis and bioconjugation.

关键词： Poly(vinyl alcohol) Poly(vinyl acetate) RAFT Polymerization Star Polymers End-Functional Polymers Michael Thiol-Ene Reaction

Potential Power of the Pyramidal Structure VII: Effects of Pyramid Power and Bio-Entanglement on the Circadian Rhythm of Biosensors

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Natural Science 2023年第1期15卷 19-38页

作者： Osamu Takagi Masamichi Sakamoto kimiko Kawano Mikio Yamamoto International Research Institute (IRI) Chiba Japan Aquavision Academy Chiba Japan

We have demonstrated the existence of a pyramid power and have revealed its characteristics by strictly scientific experiments using biosensors. We also revealed the existence of a Bio-Entanglement, an entangled relationship between biosensors. A parallel study of biosensors (edible cucumber slices) had also been conducted, and we found that the circadian rhythm of gas concentrations emitted from biosensors changes seasonally. The pyramid power and Bio-Entanglement did not change the number of cycles in the periodic approximation curve representing circadian rhythm. Therefore, in this paper we analyzed the influence of the pyramid power and Bio-Entanglement, i.e., their influence on the phase, amplitude, and correlation coefficient of the periodic approximation curve representing the circadian rhythm of emitted gas concentrations. The main results are as follows. 1) The pyramid power shifted the phase of the periodic approximation curve representing the circadian rhythm by 43 minutes. 2) The amplitude of the periodic approximation curve changed with the pyramid power and the Bio-Entanglement. The effect on the lower and upper sections of the biosensors stacked in two layers was different, with a tendency to increase the amplitude of the lower layer and decrease the amplitude of the upper layer. 3) The pyramid power and the Bio-Entanglement affected the correlation coefficient between gas concentration and the periodic approximation curve representing the circadian rhythm of gas concentration. The effect on the lower and upper layers of the biosensors was different, with a tendency for the lower layer correlation coefficient to be larger and the upper layer correlation coefficient to be smaller. Previously we demonstrated that the pyramid power and the Bio-Entanglement affect the ratio of gas concentration, i.e., psi index Ψ. In this paper we demonstrate for the first time that the pyramid power and the Bio-Entanglement affect time, i.e., phase difference.

关键词： Pyramid Biosensor Cucumis sativus Circadian Rhythm Entanglement Gas Season

Flat friction spot joining of aluminum alloy to carbon fiber reinforced polymer sheets:Experiment and simulation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2022年第12期107卷 266-289页

作者： Peihao Geng Ninshu Ma Hong Ma Yunwu Ma Kazuki murakami Huihong Liu Yasuhiro Aoki Hidetoshi Fujii Joining and Welding Research Institute Osaka University11-1 MihogaokaOsaka 567-0047IbarakiJapan MOE Key Lab for Liquid-Solid Structure Evolution and Material Processing Institute of Materials JoiningShandong UniversityJinan 250061China

The Al alloy and carbon fiber reinforced polymer(CFRP)hybrid structures,incorporating the performance advantages of the two materials,have been attracting more attention in high-end manufacturing *** the current investigation,the flat friction spot joining(FSJ)was employed in joining the AA6061-T6 alloy and CFRP *** significance of temperature distribution in influencing joint quality was highlighted through analyzing interface microstructural features,weld defect formation as well as *** understand the role of thermal energy generation and conduction in the process comprehensively,a 3D thermal-mechanical coupling finite element model was *** interfacial temperature was characterized by an uneven distribution behavior due to the inhomogeneous heat *** peak temperatures on the top surface and Al alloy to CFRP interface at 1500 rpm rotational speed with 0.1 mm/s plunging speed were 498℃and 489°C,*** peak interface temperature was reduced to286℃at 250 rpm,which produced an extremely small melted *** with the plunging speed,rotational speed was found to be the predominant parameter for determining the joint property,which could be optimized to simultaneously realize the avoidance of thermal decomposition of CFRP,the sufficient melting duration time,and the wide enough melted *** thermal histories and melted area profiles were in agreement with experimental *** findings could be utilized to provide some feasible guidance for process optimization of dissimilar FSJ of metals and composites.

关键词： Friction spot joining Numerical simulation CFRP/Al alloy Interface microstructure Thermal conduction

Gene expression analysis in the larval silk gland of the eri silkworm Samia ricini

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Insect Science 2016年第6期23卷 791-804页

作者： Takuya Tsubota kimiko Yamamoto Kazuei Mita Hideki Sezutsu Transgenic Silkworm Research Unit Ibaraki 305-8634Japan Insect Genome Research Unit National Institute of Agrobiological Sciences Ibaraki 305-8634Japan

Insects produce silk for a range of purposes. In the Lepidoptera, silk is utilized as a material for cocoon production and serves to protect larvae from adverse environmental conditions or predators. Species in the Saturniidae family produce an especially wide variety of cocoons, for example, large, golden colored cocoons and those with many small holes. Although gene expression in the silk gland of the domestic silkworm （Bombyx mori L.） has been extensively studied, considerably fewer investigations have focused on members of the saturniid family. Here, we established expression sequence tags from the silk gland of the eri silkworm （Samia ricini）, a saturniid species, and used these to analyze gene expression. Although we identified thefibroin heavy chain gene in the established library, genes for other major silk proteins, such asfibroin light chain andfibrohexamerin, were absent. This finding is consistent with previous reports that these latter proteins are lacking in saturniid silk. Recently, a series offibrohexamerin-like genes were identified in the Bombyx genome. We used this information to conduct a detailed analysis of the library established here. This analysis identified putative homologues of these genes. We also found several genes encoding small silk protein molecules that are also present in the silk of other Lepidoptera. Gene expression patterns were compared between eri and domestic silkworm, and both conserved and nonconserved expression patterns were identified for the tested genes. Such differential gene expression might be one of the major causes of the differences in silk properties between these species. We believe that our study can be of value as a basic catalogue for silk gland gene expression, which will yield to the further understanding of silk evolution.

关键词： domestic silkworm eri silkworm EST analysis Samia ricini silk gland

Seasonal Changes in the Circadian Rhythm of Gas Released from Harvested Cucumbers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Natural Science 2022年第11期14卷 503-516页

作者： Osamu Takagi Masamichi Sakamoto kimiko Kawano Mikio Yamamoto International Research Institute (IRI) Chiba Japan Aquavision Academy Chiba Japan

Vegetables and fruits are known to have long-lasting biological reactions even after harvesting. Volatile components may be released as a biological response to stimulation or injury. We measured the concentrations of volatiles released from the cut surfaces of cucumbers after their harvest and analyzed the relationship between the time the cucumbers were cut and gas concentrations. The results showed that gas concentrations indicate a circadian rhythm. We previously reported that the circadian rhythm of gas concentrations was 6 hours per cycle in the summer, i.e., from the vernal equinox to the autumnal equinox, and 24 hours per cycle in the winter, i.e., from the autumn equinox to the vernal equinox. We analyzed the gas concentrations emitted from cucumber sections in more detail in this paper and found that the circadian rhythms differ among winter, spring, summer, and autumn seasons. We found that one cycle of the circadian rhythm was 8 hours in winter, 6 hours in spring, 24 hours in summer, and a mixed cycle of 24 and 12 hours in autumn.

关键词： Cucumis sativus Biosensor Circadian Rhythm Season Gas Pyramid

Potential Power of the Pyramidal Structure VIII: Exploration of Periodic Diurnal Oscillation of Pyramid Power and Bio-Entanglement

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Natural Science 2023年第4期15卷 179-189页

作者： Osamu Takagi Masamichi Sakamoto kimiko Kawano Mikio Yamamoto International Research Institute (IRI) Chiba Japan Aquavision Academy Chiba Japan

To date, numerous books have been published on so-called “pyramid power” but there have been few academic papers on this subject other than our own. Since 2007, to demonstrate the pyramid power, we have undertaken strictly scientific experiments using a pyramidal structure (PS) that we have carefully constructed. In previous reports, we used the edible cucumber, Cucumis sativus as an effective and practical biosensor. Through measurement and analysis of volatile components (gas concentrations) emitted from the biosensor, we were able to demonstrate the existence of the pyramid power and revealed some of its characteristics. In a paper published in 2022, we showed that gas concentration release from this biosensor displayed a circadian rhythm and that this rhythm changed with the season. Based on the result that the biosensor had a periodic diurnal oscillation called a circadian rhythm, we questioned whether or not pyramid power and Bio-Entanglement also had periodic diurnal oscillations. In this paper, we investigated that possibility. Our results have shown that pyramid power and Bio-Entanglement do not exhibit significant periodic diurnal oscillations. Thus we have revealed for the first time that the field associated with pyramid power is a type of static field that always exerts a constant influence. We expect that our research results will be widely accepted in the future and will become the foundation for a new research field in science, with a wide range of applications.

关键词： Pyramid Potential Power Bio-Entanglement Diurnal Oscillation Biosensor Cucumis sativus Gas Psi Index

Mucosal patterns change after Helicobacter pylori eradication:Evaluation using blue laser imaging in patients with atrophic gastritis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2023年第17期29卷 2657-2665页

作者： Yoshiyuki Nishikawa Yoshio Ikeda Hidehiro murakami Shin-Ichiro Hori Megumi Yoshimatsu Naoki Nishikawa Department of Gastroenterology Nishikawa Gastrointestinal ClinicMatsuyama 790-0878EhimeJapan Endoscopy Center Ehime University HospitalToon 791-0295EhimeJapan Department of Internal Medicine Saiseikai Matsuyama HospitalMatsuyama 791-8026EhimeJapan Department of Gastroenterology Himeji Red Cross HospitalHimeji 670-8540HyogoJapan Department of Gastroenterology National Hospital Organization Shikoku Cancer CenterMatsuyama 791-0280EhimeJapan Department of Gastroenterology Matsuyama Shimin HospitalMatsuyama 790-0067EhimeJapan

BACKGROUND Mucosal patterns(MPs)observed on blue laser imaging in patients with atrophic gastritis can be classified as spotty,cracked,and ***,we hypothesized that the spotty pattern may change to the cracked pattern after Helicobacter pylori(***)*** To further substantiate and comprehensively investigate MP changes after *** eradication in a larger number of *** We included 768 patients who were diagnosed with atrophic gastritis with evaluable MP using upper gastrointestinal endoscopy at the Nishikawa Gastrointestinal Clinic,*** them,325 patients were ***-positive,and of them,101 patients who underwent upper gastrointestinal endoscopy before and after *** eradication were evaluated for post-eradication MP *** patients’MPs were interpreted by three experienced endoscopists who were blinded to their clinical *** Among 76 patients with the spotty pattern before or after *** eradication,the pattern disappeared or decreased in 67 patients[88.2%,95%confidence interval(CI):79.0%-93.6%),appeared or increased in 8 patients(10.5%,95%CI:5.4%-19.4%),and showed no change in 1 patient(1.3%,95%CI:0.2%-7.1%).In 90 patients with the cracked pattern before or after *** eradication,the pattern disappeared or decreased in 7 patients(7.8%,95%CI:3.8%-15.2%),appeared or increased in 79 patients(87.8%,95%CI:79.4%-93.0%),and showed no change in 4 patients(4.4%,95%CI:1.7%-10.9%).In 70 patients with the mottled pattern before or after *** eradication,the pattern disappeared or decreased in 28 patients(40.0%,95%CI:29.3%-51.7%),appeared or increased in 35 patients(50.0%,95%CI:38.6%-61.4%),and showed no change in 7 patients(10.0%,95%CI:4.9%-19.2%).CONCLUSION After *** eradication,MPs changed from spotty to cracked in most patients,which may help endoscopists easily and precisely evaluate ***-related gastritis status.

关键词： Atrophic gastritis Helicobacter pylori Gastrointestinal endoscopy Image enhancement Classification