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Chinese Journal of Chemistry 1994年第4期12卷 348-354页

作者： YUAN, GuDepartment of Chemistry, Peking university, Beijing 100871, ChinaHORIIKE, Michio KIM, Chul-Sa HIRANO, Chisato Department of Agricultural Chemistry, kochi university, Nankoku-shi, kochi 783, Japan Department of Chemistry Peking University Beijing 100871 China Department of Agricultural Chemistry Kochi University Nankoku‐shi Kochi 783 Japan

A method for the identification of the double bond positional isomers of hexadecenyl acetate has been established by analysing similarity of the mass spectra patterns on a fuzzy classification, in which the intensity ratios of six diagnostic pairs of the predominant ions were selected as standard parameters for the characterization of the double bond position. The procedure was tested with △2 to △15-isomers of chemically unmodified hexadecenyl acetate, and the original double bond position in the acetates was located unambiguously.

关键词： Mass spectrometer double bond positional isomers hexadecenyl acetates.

Physical and Microbiological Properties of Alfalfa-Established Soil in the Semiarid Horqin Sandy Land in Northern China

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Journal of Environmental Protection 2024年第4期15卷 439-449页

作者： Yumei Kang Tatsuya Kawazawa Taisei Kono Jun Kawamoto Yong Zhang Faculty of Agriculture and Marine Science Kochi University Nankoku Japan Institute for Chemical Research Kyoto University Kyoto Japan College of Resources and Environment Southwest University Chongqing China

In a previous article, we reported that a local variety of alfalfa (Medicago sativa L. cv. Aohan) had high potential to be a pioneer plant for ecological restoration in the Horqin Sandy Land, China. The plantation of Aohan significantly improved the organic matter, clay, total carbon and nitrogen contents of the soils. In this study, we investigated the physical properties such as dispersion ratio, water-stable aggregates content, and the soil microbiomes, five years after alfalfa establishment in the same study site. We found no significant difference in the dispersion ratios between the soils before and after alfalfa establishment, and all the soils at the study site were erosive. Water stable aggregates mainly distributed in 96%, suggesting that it would take longer time for improving soil structure. However, large-size aggregates (2 - 5 mm) content was slightly higher in the alfalfa planting plots. This slight increase is presumed to have long-term importance for soil and ecosystem recovery in semi-arid areas like Horqin Sandy Land. Moreover, we also found that Actinomycetes dominated the microbial community in both bulk and rhizosphere soils, and two kinds of rhizobia, Bradyrhizobium and Sinorhizobium fredii, were identified in the rhizosphere soil.

关键词： Dispersion Ratio Water-Stable Aggregate Rhizosphere Microbiome Rhizobia

沁水盆地煤层气井排采水的地球化学特征及来源示踪

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天然气地球科学 2024年

作者：方鲁加陈碧莹能惠 Yuji Sano 徐胜 Marine Core Research Institute kochi university 天津大学地球系统科学学院

次生生物气与地下水之间存在一定的关系，特别是在煤层气等天然气储层中，了解地下水与次生生物成因甲烷之间的关系对于天然气勘探和开发具有重要意义。基于中国沁水盆地6个区块的57个煤层气井排采水和3个河水样品的化学组成、氢氧同位... 详细信息

次生生物气与地下水之间存在一定的关系，特别是在煤层气等天然气储层中，了解地下水与次生生物成因甲烷之间的关系对于天然气勘探和开发具有重要意义。基于中国沁水盆地6个区块的57个煤层气井排采水和3个河水样品的化学组成、氢氧同位素组成(δ18OH2O和δDH2O)和溶解无机碳(DIC)碳同位素组成(δ13CDIC和Δ14CDIC)，深入剖析了地下水与次生生物成因甲烷之间的复杂关系。研究结果表明：氢氧同位素分布在大气降水线附近，煤层气井排采水主要来源于大气降雨，硫酸盐微生物还原作用是郑庄和阳泉区块氘同位素富集的主要原因。研究区煤层气井排采水化学组成以Na-HCO3型为主，其变化受到水—岩相互作用、阳离子交换等过程的控制。沁水盆地6个研究区块煤层气井排采水的稳定碳同位素呈现高δ13CDIC值(-4.19‰～34.80‰，平均为16.51‰)、且与溶解无机碳含量呈明显正相关关系可能是微生物产甲烷作用的结果。煤层气井排采水中δ13CDIC与SO42-的负相关性以及δDH2O正漂移等指标也指向沁水盆地不同成熟度煤岩中次生生物成因甲烷的广泛存在。δ13CDIC与镜质体反射率(ROmax)的负相关性进一步表明沁水盆地不同成熟度煤层中广泛存在次生生物成因甲烷，且在浅埋藏和成熟度较低的煤层中最为显著。地球化学与微生物学的结合将会进一步阐明次生生物甲烷的形成途径和机制。

关键词：煤层气井排采水水化学特征碳同位素次生生物甲烷沁水盆地

原位重构限制在三维纳米孔铜内的铋纳米颗粒促电还原CO_(2)

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Science China Materials 2024年第3期67卷 796-803页

作者：赵秋玉王静庄严宫磊张薇宁樊唯镏鲁振张永政藤田武志张平薛其坤 School of Physics and Physical Engineering Qufu Normal UniversityQufu 273165China School of Chemistry and Chemical Engineering Shandong UniversityJinan 25010China Institute of Physics Chinese Academy of SciencesBeijing 100190China Advanced Institute for Materials Research Tohoku UniversitySendai 980-8577Japan School of Environmental Science and Engineering Kochi University of TechnologyKami 782-8502Japan

由于单金属Bi在CO_(2)还原反应(CO_(2)RR)中效率较低,通过表面工程复合材料提高电导率和产率是一种有吸引力的方法.在此,我们重构了在三维纳米孔铜结构中的原位生长金属Bi纳米颗粒.得益于三维纳米多孔导电网络和Cu与Bi之间的强相互作用,... 详细信息

由于单金属Bi在CO_(2)还原反应(CO_(2)RR)中效率较低,通过表面工程复合材料提高电导率和产率是一种有吸引力的方法.在此,我们重构了在三维纳米孔铜结构中的原位生长金属Bi纳米颗粒.得益于三维纳米多孔导电网络和Cu与Bi之间的强相互作用,Bi@np-Cu费米能级向上移动,表现出优异的电催化二氧化碳还原性能.Bi@np-Cu在-0.97 V的电位下具有97.7%的甲酸法拉第效率,电流密度为82 mA cm^(-2).重要的是,该催化剂在连续催化反应40 h后仍能实现超过90%的法拉第效率.DFT计算表明,np-Cu有效地调节了Bi的电子态,优化了中间吸附能,从而提高了Bi的本征活性.这项工作为纳米多孔金属在催化中的应用提供了一个新视角.

关键词： 3D nanoporous CO_(2)RR Bi nanoparticle electrocatalysis reconstruction

Radical innovation breakthroughs of biodegradation of plastics by insects:history,present and future perspectives

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Frontiers of Environmental Science & Engineering 2024年第6期18卷 127-165页

作者： Shan-Shan Yang Wei-Min Wu Federica Bertocchini Mark Eric Benbow Suja P.Devipriya Hyung Joon Cha Bo-Yu Peng Meng-Qi Ding Lei He Mei-Xi Li Chen-Hao Cui Shao-Nan Shi Han-Jun Sun Ji-Wei Pang Defu He Yalei Zhang Jun Yang Deyi Hou De-Feng Xing Nan-Qi Ren Jie Ding Craig S.Criddle State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China Department of Civil and Environmental Engineering William&Cloy Codiga Resource Recovery CenterStanford UniversityStanfordCA 94305USA Plasticentropy rue Thiers 28Reims 51100France Department of Entomology and Department of Osteopathic Medical Specialties Michigan State UniversityEast LansingMI 48824USA School of Environmental Studies Cochin University of Science and TechnologyKochi 682022India Department of Chemical Engineering Pohang University of Science and TechnologyPohang 37673Republic of Korea School of Environmental Science and Engineering Tongji UniversityShanghai 200092China China Energy Conservation and Environmental Protection Group CECEP Talroad Technology Co.Ltd.Beijing 100096China School of Ecological and Environmental Sciences East China Normal UniversityShanghai 200241China Research Institute for Frontier Science Beihang UniversityBeijing 100191China School of Environment Tsinghua UniversityBeijing 100084China

Insects damaging and penetrating plastic packaged materials has been reported since the 1950s.Radical innovation breakthroughs of plastic biodegradation have been initiated since the discovery of biodegradation of plastics by Tenebrio molitor larvae in 2015 followed by Galleria mellonella in 2017.Here we review updated studies on the insect-mediated biodegradation of plastics.Plastic biodegradation by insect larvae,mainly by some species of darkling beetles(Tenebrionidae)and pyralid moths(Pyralidae)is currently a highly active and potentially transformative area of research.Over the past eight years,publications have increased explosively,including discoveries of the ability of different insect species to biodegrade plastics,biodegradation performance,and the contribution of host and microbiomes,impacts of polymer types and their physic-chemical properties,and responsible enzymes secreted by the host and gut microbes.To date,almost all major plastics including polyethylene(PE),polypropylene(PP),polyvinyl chloride(PVC),polyethylene terephthalate(PET),polyurethane(PUR),and polystyrene(PS)can be biodegraded by T.molitor and ten other insect species representing the Tenebrionidae and Pyralidae families.The biodegradation processes are symbiotic reactions or performed by synergistic efforts of both host and gut-microbes to rapidly depolymerize and biodegrade plastics with hourly half-lives.The digestive ezymens and bioreagents screted by the insects play an essential role in plasatic biodegradation in certain species of Tenebrionidae and Pyralidae families.New research on the insect itself,gut microbiomes,transcriptomes,proteomes and metabolomes has evaluated the mechanisms of plastic biodegradation in insects.We conclude this review by discussing future research perspectives on insect-mediated biodegradation of plastics.

关键词： Plastics Biodegradation Insects Gut microbiomes Enzymes

Preparedness,knowledge,and perception of nursing students about climate change and its impact on human health in India

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Regional Sustainability 2024年第1期5卷 107-118页

作者： Ramya Kundayi RAVI Priya BABY Nidhin ELIAS Jisa George THOMAS Kathyayani Bidadi VEERABHADRAIAH Bharat PAREEK College of Nursing Medical and Health Sciences UniversityRas Al Khaimah11172United Arab Emirates College of Nursing National Institute of Mental Health and Neuro sciencesBangalore560011India College of Nursing Amrita Institute of Medical SciencesKochi682041India College of Nursing All India Institute of Medical SciencesBhopal462020India Saraswati Professional and Higher Education College of Nursing Mohali140413India

Higher education plays an important role in all aspects of sustainability.Infusing climate change and sustainability into the curriculum is important to prepare future health-care professionals for climate change and sustainability actions to build resilient health systems.In this study,we evaluated the preparedness,knowledge,and perception regarding climate change and its impact on human health among Indian nursing students.A quantitative descriptive survey was conducted among 644 undergraduate nursing students studying in three institutes in the southern,northern,and western parts of India.We used a structured online questionnaire with established validity and reliability to collect data.The data were analyzed using Statistical Package for the Social Sciences version 26 software.The results showed that more than half of the students reported experiencing excessive increase(362;56.2%)and decrease(374;58.1%)in temperature in recent years.Though more than three quarters of the students(494;76.7%)accepted the general truth that climate change is mainly caused by human activities,only less than half of the students(309;48.0%)perceived the impact of climate change to be high.Three quarters of the students(483;75.0%)had a high level of knowledge regarding climate change.The students who had a high level of knowledge about climate change exerted a high perceived impact of climate change(χ^(2)=75.47;P<0.01).More than half of the students(50.9%)felt that they needed information about climate change to be included in the nursing curriculum,and only one sixth of the students(16.1%)were highly confident about engaging in climate change-related conversation with patients.Most of the students who participated in the study had basic knowledge about climate change and its impact on human health.However,there is an observed gap between knowledge and their preparedness and confidence to engage in climate change actions.Hence,we propose to strengthen the nursing curriculum by integrating various curricular and co-curricular activi

关键词： Climate change Curriculum Nursing students Human health India

Al-driven analysis establishes the single base substitution signatures as personalized prognostic predictors for five-year survival of gastric cancer

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Genes & Diseases 2024年第4期11卷 73-76页

作者： Zhenzhang Li Lingqing Xu Wen Luo Shaoan Zhangg Chunyu Hou Xiaohong Xu ,Xubei Peng E.Shiju Janak L.Pathak Shizhen Zhang Jiawei Liu Linhai Li Yang Li School of Biomedical Engineering The Sixth Affiliated HospitalGuangzhou Medical UniversityGuangzhouGuangdong 511436China College of Mathematics and Systems Science Guangdong Polytechnic Normal UniversityGuangzhouGuangdong 510665China The Second Affiliated Hospital Guangzhou Medical UniversityGuangzhouGuangdong 510260China Center for Learning Sciences and Technologies The Chinese University of Hong KongShatinNew Territories 999077China Affiliated Stomatology Hospital of Guangzhou Medical university Guangzhou Medical UniversityGuangzhouGuangdong 510182China International School of Photonics Cochin University of Science and TechnologyKochiKerala 682022India

Al-driven genetic engineering,as a burgeoning diagnostic tool,can offer predictive information on the five-year survival rate(FYSR)in the setup of a prognostic therapeutic schedule.This approach provides the individuality and accuracy of prognosis for FYSR of gastric cancer(GC).Unlike traditional neoplasm staging criteria,our technique ensures accuracy and individuality without relying on statistical data and empirical study.

关键词： cancer gastric prognosis

鲜牛奶品质参数的动力学特性研究及货架期预测

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包装工程 2024年第3期45卷 55-61页

作者：殷献华殷诚钱静王琳郭涛宿迁市江南大学产业技术研究院江苏宿迁223802 江南大学机械工程学院江苏无锡214122 kochi university of Technology Kochi 7820003Japan 江苏省食品先进制造装备技术重点实验室江苏无锡214122

目的为了研究鲜牛奶的品质参数变化规律,建立鲜牛奶的货架期模型。方法对鲜牛奶的脂肪、蛋白质、pH值和酸度在不同贮藏时间和温度内的变化进行分析,通过食品化学反应动力学方程和阿伦尼乌斯方程对鲜牛奶品质参数进行动力学特性研究。结... 详细信息

目的为了研究鲜牛奶的品质参数变化规律,建立鲜牛奶的货架期模型。方法对鲜牛奶的脂肪、蛋白质、pH值和酸度在不同贮藏时间和温度内的变化进行分析,通过食品化学反应动力学方程和阿伦尼乌斯方程对鲜牛奶品质参数进行动力学特性研究。结果鲜牛奶中脂肪、蛋白质、pH值在贮藏期内呈下降趋势,酸度呈上升趋势。4℃能减缓鲜牛奶pH值的下降和酸度的上升。结论酸度能很好地表达鲜牛奶品质的变化过程,并且通过化学反应动力学特性研究得到了鲜牛奶酸度的活化能和基于酸度的鲜牛奶的货架期模型。

关键词：鲜牛奶 pH值酸度动力学货架期

Flexible Förster resonance energy transfer-assisted optical waveguide based on elastic mixed molecular crystals

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Aggregate 2023年第6期4卷 95-100页

作者： Takumi Matsuo Koki Ikeda Shotaro Hayashi School of Engineering Science Kochi University of TechnologyKochiJapan

Flexible molecular crystal waveguides based on elastic molecular crystals(EMCs)are essential inﬂexible and compact optical materials.An increased loss coefﬁ-cientαdue to self-absorption is often a problem in optical waveguides(OWGs)ofﬂuorescent chemical materials waveguiding photons in active mode.Herein,the development of anthracene-based elastic mixed molecular crystals(EMMCs)is reported for Förster Resonance Energy Transfer(FRET)-assisted OWG.To yield a FRET crystal system based on elastic molecular crystals,1%–5%accep-tor doping forﬂuorescent molecular crystals of 9,10-dibromoanthracene 1 was successful by selecting the same regioisomer having electron-withdrawing group,9,10-diformylanthracene 2,as a dopant.In addition to conversion to the mixed system,there is a difference in the elastic modulus and hardness in EMC C1 and EMMC C2@1.However,the elastic behaviour was also shown in a few percent doping of the acceptor.Theαvalue of this EMMC,composed of 1 including 1%of 2(0.0077 dB/μm),is much lower than that of EMC composed of 1(0.1258 dB/μm)because of reducing self-absorption in the FRET system.An efﬁcient andﬂexible OWG was successfully developed by selecting an appropriate acceptor molecule and its low doping rate for mixed crystal construction.This method is a practical approach in various functional andﬂexible crystal systems.

关键词： anthracene elastic mixed molecular crystals ﬂexible Förster resonance energy transfer optical waveguide

A movable beast: glaciation in the Ediacaran

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National Science Review 2023年第8期10卷 119-120页

作者： Joseph L. Kirschvink The Marine Core Research Institute Kochi University Division of Geological&Planetary Sciences California Institute of Technology

Ediacaran time(635–543 million years ago [Ma]) represents the dawn of macroscopic life following two Neoproterozoic Snowball Earth episodes [1], where a runaway ice-albedo effect caused the entire planet to become en... 详细信息

关键词： TRUE POLAR WANDER