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Synthesis and Antioxidant Activity of(E)ω-Formylcamphene-Based Thiazole Hydrazone Derivatives

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Journal of Renewable Materials 2023年第1期11卷 379-391页

作者： Jiayu Chang Qingying Ding Chong Zhong Yao Long Zhuanquan Xiao Hai Luo Yuling Yang Zongde Wang Shengliang Liao jinzhu chen Shangxing chen Ji Zhang College of Forestry Jiangxi Agricultural UniversityEast China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland AdministrationCamphor Engineering Research Center of NFGANanchang330045China College of Science Jiangxi Agricultural UniversityNanchang330045China College of Chemistry and Chemical Engineering Jiangxi Normal UniversityNanchang330027China

(E)ω-formylcamphene was synthesized fromα-pinene,the main component of turpentine,and then reacted with thiosemicarbazide to obtain(E)ω-formylcamphene thiosemicarbazide 3,which was reacted with 14α-bromoace-tophenone compounds to obtain 14(E)ω-formylcamphene thiazole hydrazone compounds 5a–5n;the yields were all above 80%.The structures of the target compounds were characterized by IR,^(1)H-NMR,^(13)C-NMR,and HR-MS ***,500,250,125,62.5,and 31.25 mg/L drug solutions were *** radical scavenging experi-ments of 1,1-diphenyl-2-picrylhydrazyl(DPPH)and 2,2-bis(3-ethyl-benzothiazole-6-sulfonic acid)diammonium salt(ABTS)were carried out with Trolox and L-ascorbic acid as the control *** scavenging rates of 14 compounds for DPPH and ABTS free radicals were obtained;the IC_(50) values of scavenging free radicals were fitted using SPSS *** results show that 14(E)ω-formylcamphene-based thiazole hydrazone compounds exhibited good scavenging effects on the two free radicals,especially when the concentration of the drug solution was 125 and 62.5 mg/L;most compounds exceeded the scavenging efficiency of Trolox and L-ascorbic acid.

关键词： (E)ω-formylcamphene thiosemicarbazone thiazohydrazone structural analysis antioxidant activity

A lunar time scale from the perspective of the Moon’s dynamic evolution

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Science China Earth Sciences 2024年第1期67卷 234-251页

作者： Dijun GUO Jianzhong LIU James WHEAD Fuqin ZHANG Zongcheng LING Shengbo chen Jianping chen Xiaozhong DING jinzhu JI Ziyuan OUYANG State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China Center for Lunar and Planetary Sciences Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China Department of Earth Environmental and Planetary SciencesBrown UniversityProvidence RI 02912USA Institute of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China Shandong Provincial Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment Institute of Space SciencesShandong UniversityWeihai 264209China College of Geoexploration Science and Technology Jilin UniversityChangchun 130026China School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China Institute of Geology Chinese Academy of Geological SciencesBeijing 100037China School of Resources and Environmental Engineering Inner Mongolia University of TechnologyHohhot 010051China Center for Excellence in Comparative Planetology Chinese Academy of SciencesHefei 230026China

A geologic time scale is a chronological system that separates the geological strata of a planetary body into different units in temporal sequence and shows its progressive *** time scale of the Moon was established a half-century ago during the telescopic-early Apollo exploration era,using data with limited spatial coverage and *** past decades have seen a wide array of studies,which have significantly extended our understanding of global lunar geologic *** on a comprehensive review of lunar evolution with respect to the dynamical changes,we propose two major updates to the current lunar time scale paradigm to include the evolution of both endogenic and exogenic dynamic forces now known to have influenced early lunar ***,based on the temporal interplay of exogenic and endogenic processes in altering the Moon,we defined three Eon/Eonothem-level units to represent three dynamical evolutionary ***,the pre-Nectarian System is redefined and divided as the magma ocean-era Magma-oceanian System and the following Aitkenian System beginning with the South Pole-Aitken *** ejecta of this basin,Das Formation,was deposited on the primordial lunar crust as the oldest stratum produced from exogenic *** updated lunar time scale,facilitated by the post-Apollo exploration and research advances,provides an integrated framework to depict the evolution of the Moon and has important implications for the geologic study of other terrestrial planets.

关键词： The Moon Geologic time scale Evolution history Endogenic process Exogenic process

On the hydrogenation mechanism of CO2 catalyzed by the tetraphos-ligated（PP3: P（CH2CH2PPh2）3） cobalt complexes: monohydride ***

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On the hydrogenation mechanism of CO2 catalyzed by the tetra...

不同收获期对杂交水稻F_(1)代种子质量的影响

中国化学会第十二届全国量子化学会议

作者： Hui Gao Limin chen jinzhu chen Guangzhou Institute of Energy Conversion Chinese Academy of Sciences College of Environment and Energy South China University of Technology

Density functional theory（DFT）calculations were used to study the mechanisms for hydrogenation of carbon dioxide catalyzed by the tetraphos-ligated（PP3:P（CH2CH2PPh2）3）cobalt *** monohydride catalytic pathway（Path I）and the dihydride catalytic pathway（Path Ⅱ）for the hydrogenation of CO2 have been explored,*** largest free energy barrier in Path Ⅱ is 19.1 kcal mol-1 significantly lower than that of 22.8 kcal mol-1 in Path I,corresponding to the hydride transfer from cobalt center to *** detailed comparisons of the possible pathways suggest that the Path Ⅱ is much more favored than Path I and that it is not necessary to form the monohydride species in the whole catalytic *** results unambiguously demonstrate that the active catalyst is the dihydride rather than the monohydride,which are consistent with the experimental observations,most importantly,and provide a detailed mechanistic insight.

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浙江农业科学 2024年第4期65卷 808-811页

作者：顾舒雯徐鸿诚李哲陈锦珠吴海峰杨世才潘竹栋朱孔志江苏金色农业股份有限公司江苏大丰224100

为探究杂交水稻F_(1)代不同收获期对种子质量的影响,选择3个杂交水稻制种组合,分别是晶4155S/R534、荃9311A/五山丝苗和隆臻36S/钰占作为试验材料,在喷施赤霉素后设置8个不同收获期,研究不同收获时间对杂交水稻F_(1)代种子质量的影响,... 详细信息

为探究杂交水稻F_(1)代不同收获期对种子质量的影响,选择3个杂交水稻制种组合,分别是晶4155S/R534、荃9311A/五山丝苗和隆臻36S/钰占作为试验材料,在喷施赤霉素后设置8个不同收获期,研究不同收获时间对杂交水稻F_(1)代种子质量的影响,考察相关农艺性状。结果表明,晶4155S/R534在喷施赤霉素后33 d左右种子综合质量较好,适宜收获;荃9311A/五山丝苗,在喷施赤霉素后30 d左右种子综合质量较好,适宜收获;而隆臻36S/钰占在喷施九二〇后35 d左右适宜收获。因此,选择适宜的收割时期可显著提高杂交水稻种子发芽率和发芽势,增加千粒重,降低种子粉质化程度和裂颖率,提升杂交水稻种子质量,确保杂交水稻产量稳收。

关键词：杂交水稻赤霉素收获期种子质量

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Comprehensive reutilization of herbal waste:Coproduction of magnolol,honokiol,and β-amyrin from Magnolia officinalis residue

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Green Energy & Environment 2024年第2期9卷 403-412页

作者： Lukun Xiao Anyi Zhao Jie Qiu An Liu Sha chen jinzhu Jiang Jun Zhang Cong Guo Jipeng Di Jintang cheng Chang chen Kangxin Hou Aiping Zhang Yan Liu Caixia Wang Institute of Chinese Materia Medica China Academy of Chinese Medical SciencesBeijing100700China School of Pharmacy Shanxi Medical UniversityTaiyuan030001China

Herbal extraction residues(HERs)cause serious environmental pollution and resource *** this study,a novel green route was designed for the comprehensive reutilization of all components in HERs,taking Magnolia officinalis residues(MOR)as an *** reluctant structure of MOR was first destroyed by alkali pretreatment to release the functional ingredients(magnolol and honokiol)originally remaining in MOR and to make MOR more accessible for hydrolysis.A metal–organic frame material MIL-101(Cr)with a maximum absorption capacity of 255.64 mg g^(-1)was synthesized to absorb the released honokiol and magnolol from the pretreated MOR solutions,and 40 g L^(-1)reducing sugars were obtained with 81.8%enzymatic hydrolysis rate at 10%MOR solid ***,382 mg L-1β-amyrin was produced from MOR hydrolysates by an engineered yeast *** total,1 kg honokiol,8 kg magnolol,and 7.64 kg β-amyrin could produce from 1 ton MOR by this cleaner process with a total economic output of 170,700 RMB.

关键词： Magnolia officinalis residues(MOR) Comprehensive utilization Metal-organic frame material Biosynthesis

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中子多芯硼管探测器热中子灵敏度检测研究

世界核地质科学 2024年第4期41卷 841-847页

作者：赵国海张荣华李多宏徐争争陈金铸赵冬贾文宝韩叶良国家核安保技术中心北京102401 南京航空航天大学江苏南京210000 华北电力大学北京102206

中子探测器用于测量未知中子辐射场的中子信息时,热中子灵敏度是中子探测器的一项重要参数,需提前对其进行热中子灵敏度的检测,以保证数据的可靠性。此外热中子灵敏度也是中子探测器性能优劣的一个重要指标,指导着探测器的改进和应用。... 详细信息

中子探测器用于测量未知中子辐射场的中子信息时,热中子灵敏度是中子探测器的一项重要参数,需提前对其进行热中子灵敏度的检测,以保证数据的可靠性。此外热中子灵敏度也是中子探测器性能优劣的一个重要指标,指导着探测器的改进和应用。为检测某中子多芯硼管探测器样件的热中子灵敏度,提出一种在非标准中子场下测量热中子灵敏度的实验方法。该方法通过慢化同位素中子源建立含有热中子的中子场,利用活化箔法对探测器所在空间处的热中子注量率进行绝对测量,进而求得该中子探测器的热中子灵敏度。此外,对于不同几何布置下该中子多芯硼管探测器的热中子灵敏度检测结果进行实验分析,确定优选的几何布置。结果表明:该中子多芯硼管具有良好的热中子灵敏度,且测量结果与厂家在标定的结果吻合良好,验证该热中子灵敏度检测方法的可行性与准确性。此实验方法为后续开展探测器的结构设计、优化等提供便利。

关键词：中子探测器热中子灵敏度热中子注量率

Polyploidy Induction and Morphological Characteristics in the Asiatic Hybrid Lily(Lilium *** dazzling)

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Journal of Northeast Agricultural University(English Edition) 2024年第2期31卷 24-33页

作者： Xiang Yixun chen Mingxuan chen Jianguo Yu Zhenyu Zhang jinzhu Yang Tao Che Daidi Fan Jinping College of Horticulture and Landscape Architecture Northeast Agricultural UniversityHarbin 150030China Key Laboratory of Cold Region Landscape Plants and Applications Harbin 150030China

The Asiatic hybrid lily cultivar Lilium dazzling(family Liliaceae)is a perennial herbaceous bulbous plant with bright yellow flowers of ornamental *** also shows resistance to diseases and abiotic stress,making it an ideal parent for breeding *** study established a sterile culture system using scales of dazzling lily as explants to induce *** buds growing to 1 cm were treated with different concentrations of colchicine(125,250 and 500μmol·L-1),pendimethalin or trifluralin(100,200 and 300μmol·L-1,respectively)for 12,24 and 36 *** cytometry and chromosome counting were used to identify ploidy,and the phenotype of the polyploids was examined by stomatal observation and leaf index *** increasing mutagen concentration and exposure time,the mortality and mutagenic rate *** optimal treatment group was:300μmol·L-1 trifluralin for 12 h,which resulted in 15.55%mortality rate and 42.22%induction *** polyploid plants showed a significant increase in stomata length,leaf length and leaf width,with a decrease in stomatal density compared with the control *** study provided a basis for polyploid breeding.

关键词： polyploid Asiatic hybrid lily trifluralin flow cytometry plant morphology

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基于复杂系统中因果关系的单细胞病理学

海军军医大学学报 2024年第2期45卷 168-173页

作者：于观贞苏金珠陈颖浙江数字内容研究院数字医疗与人工智能实验室绍兴312366 海军军医大学(第二军医大学)第一附属医院消化内科上海200433

病理学从微观角度展现了生物组织发育、分化、成熟和凋亡的复杂变化状态,单细胞分析技术为病理学复杂系统的研究提供了更多的信息。肿瘤是由肿瘤细胞和周围微环境组成的复杂生态系统。在病理学上,肿瘤中细胞各异、分布和生理功能千差万... 详细信息

病理学从微观角度展现了生物组织发育、分化、成熟和凋亡的复杂变化状态,单细胞分析技术为病理学复杂系统的研究提供了更多的信息。肿瘤是由肿瘤细胞和周围微环境组成的复杂生态系统。在病理学上,肿瘤中细胞各异、分布和生理功能千差万别,并且受自身、周围环境和治疗方法的调节,自成复杂系统。利用复杂系统中的因果判定方法,可以揭示单细胞复杂的调节作用,以及不同类型的肿瘤细胞与患者治疗方案、治疗效果、疾病复发和生存时间之间的因果关系。本文以肿瘤为例,阐述基于复杂系统中因果关系的单细胞病理学的意义和研究方法。

关键词：复杂系统因果关系单细胞病理学肿瘤病理学人工智能

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小麦病虫草害综合防控及减药增效技术示范

现代农业科技 2024年第5期 57-59,68页

作者：张玉王风良吴佳文张海波周晨陈锦珠朱凤盐城市大丰区植物保护站江苏盐城224000 江苏省植物保护植物检疫站江苏南京210009 江苏金色农业股份有限公司江苏盐城224100

通过推广小麦抗性品种、药剂拌种、适期适量播种、精选高效药剂等综合防控措施,对小麦病虫草害进行全程综合防控,研究病虫草防控效果、农药减量增效成果及小麦增产情况。结果表明:小麦病虫草全程综合防控区赤霉病、叶锈病、穗蚜、杂草... 详细信息

通过推广小麦抗性品种、药剂拌种、适期适量播种、精选高效药剂等综合防控措施,对小麦病虫草害进行全程综合防控,研究病虫草防控效果、农药减量增效成果及小麦增产情况。结果表明:小麦病虫草全程综合防控区赤霉病、叶锈病、穗蚜、杂草防效及小麦产量等均高于群众自防区,全程综合防控区农药用量减少29.13%,用药成本降低22.14%,增加的纯收益是群众自防区的2.37倍,减药增效成果显著,且全程综合防控区小麦生长好,籽粒饱满,品质良好。

关键词：小麦病虫草害综合防控减药增效安全性