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Chemical Research in Chinese Universities 1997年第1期13卷 23-28页

作者： yu Jian xin, liu Fang min, SUN Wan fu and liu yu ting (Department of Chemistry, Xinjiang University, Ulumuqi, 830046) XINJIANG UNIV DEPT CHEMULUMUQI 830046PEOPLES R CHINA

The present paper covers the stereoselective syntheses of four 1 thiogalactopyranosides 1—4 and three thio disaccharides 5—7 through the PTC methods and their structures confirmed by means of elementary analysis, ... 详细信息

关键词： Synthesis Phase transition catalysis Thiogalactopyranoside Thio disaccharide Stereospecificity

Enhancing boll protein synthesis and carbohydrate conversion by the application of exogenous amino acids at the peak flowering stage increased the boll Bt toxin concentration and lint yield in cotton

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Journal of Integrative Agriculture 2023年第6期22卷 1684-1694页

作者： liu Zhen-yu LI Yi-yang Leila.I.M.TAMBEL liu yu-ting DAI yu-yang XU Ze LENG Xin-hua ZHANG Xiang CHEN De-hua CHEN yuan Jiangsu Key Laboratory of Crop Genetics and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops YangzhouUniversityYangzhou225009P.R.China Agricultural Research Cooperation Biotechnology and Biosafety Research CenterKhartoum 13314Sudan

In Bacillus thuringenesis(Bt) transgenic cotton, the cotton boll has the lowest insecticidal protein content when compared to the other organs. The present study investigated the effects of amino acid spray application at the peak flowering stage on the cotton boll Bt toxin concentration and yield formation. Boll protein synthesis and carbohydrate conversion were also studied to reveal the fundamental mechanism. Three treatments(i.e., CK, the untreated control;LA1, five amino acids;LA2, 21 amino acids) were applied to two Bt cultivars of G. hirsutum(i.e., the hybrid Sikang 3 and the conventional Sikang 1) in the cotton-growing seasons during 2017 and 2018. Amino acid spray application at the peak flowering stage resulted in an increase of 5.2–16.4% in the boll Bt protein concentration and an increase of 5.5–11.3%in the seed cotton yield, but there was no difference between the two amino acid treatments. In addition, amino acid applications led to increases in the amino acid content, soluble protein content, glutamate pyruvate transaminase(GPT)activity, glutamate oxaloacetate transaminase(GOT) activity, glucose content, fructose content and soluble acid invertase(SAI) activity. This study also found that Bt protein content, enhanced boll number and the weight of opened bolls were closely related to carbon and nitrogen metabolism. The Bt protein content had significant linear positive correlations with amino acid and soluble protein contents. Enhanced boll number had significant linear positive correlations with the GPT and GOT activities from 15–25 days after flowering(DAF). The weight of opened bolls from 55–65 DAF had a significant linear positive correlation with the SAI activity. These results indicate that the enhancement of boll protein synthesis and carbohydrate conversion by amino acid application resulted in a simultaneous increase in the boll Bt protein concentration and cotton lint yield.

关键词： Bt cotton boll insecticidal protein protein synthesis carbohydrate conversion

MXene Hybridized Polymer with Enhanced Electromagnetic Energy Harvest for Sensitized Microwave Actuation and Self‑Powered Motion Sensing

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Nano-Micro Letters 2025年第3期17卷 265-279页

作者： yu‑Ze Wang yu‑Chang Wang ting‑ting liu Quan‑Liang Zhao Chen‑Sha Li Mao‑Sheng Cao School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China School of Materials Science and Engineering Peking UniversityBeijing 100871People’s Republic of China School of Mechanical and Material Engineering North China University of TechnologyBeijing 100144People’s Republic of China Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaHeilongjiang UniversityHarbin 150080People’s Republic of China

Polymeric microwave actuators combining tissue-like softness with programmablemicrowave-responsive deformation hold great promise for mobile intelligentdevices and bionic soft robots. However, their application is challenged by restricted electromagneticsensitivity and intricate sensing coupling. In this study, a sensitized polymericmicrowave actuator is fabricated by hybridizing a liquid crystal polymer with Ti3C2Tx(MXene). Compared to the initial counterpart, the hybrid polymer exhibits unique spacechargepolarization and interfacial polarization, resulting in significant improvements of230% in the dielectric loss factor and 830% in the apparent efficiency of electromagneticenergy harvest. The sensitized microwave actuation demonstrates as the shortenedresponse time of nearly 10 s, which is merely 13% of that for the initial shape memory polymer. Moreover, the ultra-low content of MXene (upto 0.15 wt%) benefits for maintaining the actuation potential of the hybrid polymer. An innovative self-powered sensing prototype that combinesdriving and piezoelectric polymers is developed, which generates real-time electric potential feedback (open-circuit potential of ~ 3 mV) duringactuation. The polarization-dominant energy conversion mechanism observed in the MXene-polymer hybrid structure furnishes a new approachfor developing efficient electromagnetic dissipative structures and shows potential for advancing polymeric electromagnetic intelligent devices.

关键词： Microwave absorption Electromagnetic response Energy harvest Self-sensing Soft actuator

Computer Simulation of the Electronic Structures and Absorption Spectra for a KMgF3 Crystal Containing a Potassium Vacancy

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Chinese Physics Letters 2011年第3期28卷 159-162页

作者： CHENG Fang liu ting-yu ZHANG Qi-Ren QIAO Hai-Ling ZHOU Xiu-Wen College of Science University of Shanghai for Science and TechnologyShanghai 200093

CASTEP code,based on the density functional theory(DFT)Electronic structures and absorption spectra for a perfect KMgF_(3)crystal and a KMgF_(3)crystal containing a potassium vacancy V_(K)^(-)are optimized using the CASTEP density functional theory *** calculated results indicate that the perfect KMgF_(3)crystal has no absorption in the visible energy region,however,a KMgF_(3)crystal containing V_(K)^(-)has an additional absorption band peaking at 565 nm,fitting well with the experimental result that KMgF_(3)irradiated by an electron has an additional absorption peak at 565 *** is reasonably predicted that the 565 nm absorption band is related to the existence of V_(K)^(-)in the KMgF_(3)crystal created by the electron irradiation.

关键词： absorption crystal perfect

Synthesis of 1,2:4,5-di-O-Isopropylidene-3-C-Cyano-β-D-ribo-hex-2-ulo Pyranose by Phase Transition Catalysis

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Chemical Research in Chinese Universities 1992年第2期8卷 169-172页

作者： yu Jian-xin and liu yu-ting (Chemistry Department of Xinjiang University, Wulumuqi, 830046)

Introduction The cyano branched carbohydrates are useful, versatil intermediaries for the synthesis of branched sugars having biological activity in nature. Owing to the good yield, mild reaction conditions and high s... 详细信息

关键词： Phase transition catalysis Synthesis Stereospecificity 1,2:4,5-di-O-Iso-propylidene-3-C-Cyano-β-D-ribo-hex-2-ulo pyranose

Artemisinin analogue SM934 protects againstlupus-associated antiphospholipid syndromeinmale(NZW × BXSB) F1 mice via Nrf2/HO-1 pathway

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中国药理学与毒理学杂志 2019年第10期 758-759页

作者： LIN Ze-min HE Shi-jun liu yu-ting TANG Wei ZUO Jian-ping Laboratory of Immunopharmacology State Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Laboratory of Immunology and Virology Shanghai University of Traditional Chinese Medicine

OBJECTIVE Antiphospholipid syndrome（APS） is a systemic autoimmune disorder characterized by the core clinical manifestations of thrombosis, venous or arterial, and recurrent fetal loss, in the presence of antiphospholipid antibodies（a PL）. APS can be either primary or secondary when it occurs in the context of other autoimmune disorder, mainly systemic lupus erythematosus（SLE）. This study was designed to explore the potential therapeutic effects of the artemisinin analog SM934 on the spontaneous lupus-associated APS in male（NZW×BXSB） F1 mice and investigate the correlated mechanisms. METHODS 12-week-old male（NZW×BXSB） F1 mice were randomly divided into 3 groups: saline, prednisone(PNS, 2 mg·kg;·d;, po) and SM934(10 mg·kg;·d;po). Age-matched female NZW, male BXSB, and female（NZW × BXSB） F1 mice were used as normal *** a PLs and anti-nuclear antibodies（ANAs） were determined using ELISA. Renal function was evaluated by histopathological assays and immunostaining. Superoxide dismutase（SOD）, myeloperoxidase（MPO）, glutathione peroxidase（GPx）, catalase（CAT）, reactive oxygen species（ROS）, and pro-inflammatory cytokines expressionin kidney tissue were measured by quantitative realtime PCR and Western blotting. In vitro si RNA knockdown and immunofluorescence imaging were performed to validate the involvement of nuclear factor erythroidderived 2-like 2（Nrf2）/hemeoxygenase-1（HO-1） pathway in SM934 pharmacological mechanisms. RESULTS Oral administration of SM934 ameliorated disease progression in male（NZW×BXSB） F1 mice, improving survival,attenuating severity of renal injury, decreasing proteinuria, urinary protein/creatinine ratio, and serum pathogenic autoreactive Ig G levels. SM934 treatment also suppressed inflammation and oxidative stress in kidney tissue,through reducing inflammatory mediators（TNF-α, IL-1β and IL-6）, while enhancing expression of Nrf2 downstream antioxidant genes（HO-1） and enzymes（SOD, CAT and GPX） in kidney tissue. Further, SM934 in vitro treat

关键词： artemisinin analog lupus-associated antiphospholipid syndrome antioxidant response inflammatory mediator

Studies on Electron Impact Mass Spectra of Some Anhydro-sugars

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Chemical Research in Chinese Universities 1997年第4期13卷 39-43页

作者： yu Jian xin liu yu ting WANG Yong fu O YANG Li DONG Ying CAI Meng shen Department of Chemistry Xinjiang UniversityUlumuqi830046 School of Pharmaceutical Sciences Beijing Medical UniversityBeijing100083

The fragmentation patterns of anhydro sugars 1—6 in electron impact mass spectrometry have been proposed, and verified by means of metastable ions scanning method.

关键词： Anhydro sugar Anormeric isomers Electron impact mass spectrum

Synthesis and Spectroscopic Study of a New Li-B-V-O Cluster Compound

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光谱学与光谱分析 2016年第S1期36卷 11-12页

作者： HUANG Meng-meng GUO Bing-cui HUANG Mei-qing LIN Hui-yun SHI Lin liu ting-yu CHEN Yi-ping College of Chemistry Fuzhou UniversityFuzhou 350108 China Fuzhou No.1 Middle School Fuzhou 350108 China

In this paper,the synthesis of a novel polyoxovanadiumborate[Li(H2O)3]3[V12B18O48(OH)12(OH)]·(H2O)5by hydrothermal ***,2DFTIR and UV-Vis absorption spectroscopy were employed to explore the relationships between stru... 详细信息

关键词： Polyoxovanadiumborate cluster Crystal-Structure Two-Dimensional Spectroscopy Hydrothermal synthesis

Mass Spectrometric Study of Acetylated Glycopyranosyl Azides

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Chemical Research in Chinese Universities 1993年第2期9卷 171-174页

作者： yu Jian-xin liu yu-ting (Department of Chemistry, Xinjiang University, Wulumuqi, 830046)liu Li (Xinjiang Institute of Chemistry, Academia Sinica, Wulumuqi, 830011) To whom correspondence should be addressed.

Introduction Glycosyl azides are useful, versatile intermediates for the synthesis of N-glyeosyl derivatives and other biologically important non-carbohydrate derivatives since the azido group can be introduced readily into aliphatic, aromatic and heterocyclic systems, and can be transformed into other functional groups and utilized for the synthesis of hetero-

关键词： Mass spectra Acetylated glycopyranosyl azides Reduction Glycosyl amine

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《春秋》及其“三传”所见建筑原则探析

同济大学学报（社会科学版） 2014年第1期25卷 82-88页

作者：刘雨婷同济大学建筑与城市规划学院上海200092

文章通过对《春秋》及其"三传"中建筑文献的梳理,归纳总结了其中蕴含的建筑原则;并通过对具体文献的解读,分析了其所展现的时代特点与思想倾向。

关键词：建筑制度西周春秋时期《春秋》及其'三传' 儒家