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Metal-ion Interactions with Sugars:Crystal Structure of Bis(4-dehydro-L-arabinose) Calcium Methanol Bishydrate

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Chinese Journal of Structural Chemistry 2015年第5期34卷 764-770页

作者： HU Biao yu Di HUANG Kai yu shu-juan College of Light Industry and Food Science South China University of Technology

The crystal structure of the metal-organic frame Ca（C5H9O5）2·CH3OH·2H2O（1） has been synthesized and *** 1 belongs to a tetragonal P43212 space *** complex 1,the sugar moiety shows a beta-L configuration of pyranose *** calcium（Ⅱ） is eight-coordinated,binding to four such sugar moieties,via O（1）,O（2） of two molecules and O（3）,O（4） of the other two,with the 4-hydroxy group being *** water and methanol molecules are not coordinated to the calcium ion.

关键词： metal-organic framework Ca-L-arabinose complex crystal structure

Effects of Lanthanide Ions on Electrooxidation of Methanol

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Chemical Research in Chinese Universities 2008年第5期24卷 632-634页

作者： WANG Hai-tao YIN yu-chun GAO shu-juan College of Chemical Engineering Northeast Dianli University Jilin 132012 P. R. China

Four kinds of lanthanide ions（Sm^3＋,Yb^3＋,Eu^3＋,La^3＋）as an additive were added into the aqueous solution containing methanol,respectively,and their effects on methanol elecotrooxidation in aqueous solutions were studied with cyclic *** results show that the four kinds of ions have promotion action upon the electrooxidation of methanol to different *** best additive,Sm^3＋,can increase the anodic oxidation current of methanol by 80%and the peak potential shifted negatively about 50 *** promotion effects of the lanthanide ions were considered to be related to the extranuclear electron distribution of these ions and their adsorption on the Pt electrode surface.

关键词： Methanol Electrooxidation Lanthanide ion

New octadecanoid derivatives from the seeds of Ipomoea nil

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Chinese Journal of Natural Medicines 2019年第4期17卷 303-307页

作者： SONG Xiu-Qing ZHANG Jun-Sheng yu shu-juan yu Jin-Hai ZHANG Hua School of Chemistry and Chemical Engineering University of Jinan School of Biological Science and Technology University of Jinan

Four new octadecanoid derivatives(1–4) including a pair of enantiomers(1/2), along with 12 known analogues(5–16), were isolated from the seeds of Ipomoea nil. Their structures were determined by detailed spectroscopic analyses and comparison with reported data of structurally related compounds, with the absolute configurations of 1 and 2 being assigned by an in situ dimolybdenum ECD method. Our bioassays revealed that these isolates did not show ABTS radical scavenging activity while 10 and 13 displayed better a-glucosidase inhibitory activity than the positive control acarbose(IC_(50) 167.7 ± 1.55 μmol×L^(-1)), with IC_(50) of 92.73 ± 3.12 and 11.39 ± 2.18 μmol×L^(-1), respectively.

关键词： Ipomoea nil Octadecanoid Fatty acid Natural enantiomer α-Glucosidase inhibition

含二苯甲酮结构水溶性梳状高分子紫外线吸收剂的合成

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高校化学工程学报 2012年第1期26卷 165-168页

作者：于淑娟广西师范学院化学与生命科学学院广西南宁530001

将2,4-二羟基二苯甲酮(UV-0)、聚乙二醇单甲醚(mPEG)与丙烯酰氯反应合成中间体2-羟基-4-丙烯酸酯基二苯甲酮(2H4ABP)和聚乙二醇单甲醚丙烯酸酯,然后通过自由基溶液共聚合,将聚乙二醇单甲醚丙烯酸酯与2H4ABP、丙烯酸进行共聚合合成了一... 详细信息

将2,4-二羟基二苯甲酮(UV-0)、聚乙二醇单甲醚(mPEG)与丙烯酰氯反应合成中间体2-羟基-4-丙烯酸酯基二苯甲酮(2H4ABP)和聚乙二醇单甲醚丙烯酸酯,然后通过自由基溶液共聚合,将聚乙二醇单甲醚丙烯酸酯与2H4ABP、丙烯酸进行共聚合合成了一系列梳状水溶性高分子紫外线吸收剂。采用FT-IR、1H-NMR、UV等手段对产物进行了结构表征。紫外测试结果表明产物在244、291、340 nm处有强紫外吸收,与UV-0相比发生了明显红移。通过分光光度计测定计算了产物的紫外吸收效果残存率并考察了产物的光稳定性,结果表明产物有较好的光稳定性。

关键词：紫外线吸收剂聚乙二醇单甲醚 2,-4-二羟基-二苯甲酮水溶性

Robot-assisted treatment of secondary epilepsy caused by parasitic infection:a case report

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Acta Epileptologica 2024年第2期7卷 143-150页

作者： juan Luo Xin Chen Sixun yu Haifeng shu Department of Neurosurgery Affiliated Hospital of Southwest Medical UniversityLuzhou Sichuan 646000China Department of Neurosurgery General Hospital of the Western Theater Command of the PLAChengdu Sichuan 610083China

Background Cerebral sparganosis represents the most severe manifestation of sparganosis,with a relatively low global *** cases of secondary epileptic seizures caused by sparganosis infection in the functional areas of the brain,what advanced neurosurgical techniques should be employed to precisely identify and excise the epi-leptic lesions in the deep functional areas of the brain,aiming to achieve maximal removal while minimising the risk of neurological deficits?This remains a current challenge for epilepsy *** presentation A 24-year-old Chinese male was admitted to our hospital,presenting with a history of left limb twitching persisting for over a *** main clinical symptoms presented twitching and numbness of his left limb without loss of *** the premise of inappropriate anti-seizure treatment,recurrent epilepsy attacked *** patient’s diagnosis was considered as“space-occupying lesions in the several lobes of brain,secondary epilepsy”after comprehensive assessment and *** experts considered that the patient’s space-occupying lesions in the right frontal and parietal lobes were highly suspected to be infected by *** report delved into the application of neurosurgery robot-assisted frameless stereotaxic technology and intraopera-tive stereotactic electroencephalography(SEEG)monitoring technology to accurately locate and optimize removal of parasite-related epileptic lesions situated in functional areas of the *** a result,the patient had achieved seizure freedom,leaving no symptoms of neurological *** With the highly integrated development of imaging technology,mechanical technology,computer control technology,and artificial intelligence,surgical robots are poised to play a larger role across various neurosur-gical specialties in the *** benefits for patients and the promising application of this technology,its utilization holds significant value.

关键词： Cerebral sparganosis Secondary epilepsy Robot Frameless stereotaxic technology

Implications for fault reactivation and seismicity induced by hydraulic fracturing

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Petroleum Science 2024年第2期21卷 1081-1098页

作者： Zi-Han Sun Ming-Guang Che Li-Hong Zhu shu-juan Zhang Ji-yuan Lu Chang-yu Jin Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines School of Resources and Civil Engineering and Key Laboratory of Liaoning Province on Deep Engineering and Intelligent TechnologyNortheastern UniversityShenyang110819LiaoningChina Research Institute of Petroleum Exploration&Development PetroChina Company LimitedBeijing100084China The Exploration and Development Research Institute of Daqing Oilfield Limited Company Daqing163458HeilongjiangChina

Evaluating the physical mechanisms that link hydraulic fracturing(HF) operations to induced earthquakes and the anticipated form of the resulting events is significant in informing subsurface fluid injection operations. Current understanding supports the overriding role of the effective stress magnitude in triggering earthquakes, while the impact of change rate of effective stress has not been systematically addressed. In this work, a modified critical stiffness was brought up to investigate the likelihood, impact,and mitigation of induced seismicity during and after hydraulic fracturing by developing a poroelastic model based on rate-and-state fraction law and linear stability analysis. In the new criterion, the change rate of effective stress was considered a key variable to explore the evolution of this criterion and hence the likelihood of instability slip of fault. A coupled fluid flow-deformation model was used to represent the entire hydraulic fracturing process in COMSOL Multiphysics. The possibility of triggering an earthquake throughout the entire hydraulic fracturing process, from fracturing to cessation, was investigated considering different fault locations, orientations, and positions along the fault. The competition between the effects of the magnitude and change rate of effective stress was notable at each fracturing stage. The effective stress magnitude is a significant controlling factor during fracturing events, with the change rate dominating when fracturing is suddenly started or stopped. Instability dominates when the magnitude of the effective stress increases(constant injection at each fracturing stage) and the change rate of effective stress decreases(the injection process is suddenly stopped). Fracturing with a high injection rate, a fault adjacent to the hydraulic fracturing location and the position of the junction between the reservoir and fault are important to reduce the Coulomb failure stress(CFS) and enhance the critical stiffness as

关键词： Hydraulic fracturing Coulomb failure stress Rate-and-state fraction model Linear stability analysis Critical stiffness Seismically induced fault

Preoperative albumin-bilirubin score predicts short-term outcomes and long-term prognosis in colorectal cancer patients undergoing radical surgery

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World Journal of Gastrointestinal Surgery 2024年第7期16卷 2096-2105页

作者： yu-Hang Diao Xin-Peng shu Can Tan Li-juan Wang Yong Cheng Department of Gastrointestinal Surgery The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China

BACKGROUND The albumin-bilirubin(ALBI)score is a serum biochemical indicator of liver function and has been proven to have prognostic value in a variety of *** colorectal cancer(CRC),a high ALBI score tends to be associated with poorer *** To investigate the correlation between the preoperative ALBI score and outcomes in CRC patients who underwent radical *** Patients who underwent radical CRC surgery between January 2011 and January 2020 at a single clinical center were *** ALBI score was calculated by the formula(log10 bilirubin×0.66)+(albumin×-0.085),and the cutoff value for grouping patients *** short-term outcomes,overall survival(OS),and disease-free survival(DFS)were *** A total of 4025 CRC patients who underwent radical surgery were enrolled in this study,and there were 1908 patients in the low ALBI group and 2117 patients in the high ALBI *** regression analysis revealed that age,tumor size,tumor stage,ALBI score,and overall complications were independent risk factors for OS;age,tumor stage,ALBI score,and overall complications were identified as independent risk factors for *** A high preoperative ALBI score is correlated with adverse short-term outcomes,and the ALBI score is an independent risk factor for OS and DFS in patients with CRC undergoing radical surgery.

关键词： Colorectal cancer Albumin-bilirubin score Overall survival Disease-free survival Outcomes

20世纪80年代以来的西方大学史研究——基于《大学史》杂志的分析

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中国地质大学学报（社会科学版） 2009年第3期9卷 114-118页

作者：于书娟江南大学教育学院江苏无锡214122

本文通过对《大学史》杂志1981-2005年所刊发论文的分析,对20世纪80年代以来的西方大学史研究进行了学术史考察。研究发现:当前的西方大学史研究主题的重心有所转移,从对"大学与知识"关系的强调转向了对"大学与社会"关系的重视,且呈现... 详细信息

本文通过对《大学史》杂志1981-2005年所刊发论文的分析,对20世纪80年代以来的西方大学史研究进行了学术史考察。研究发现:当前的西方大学史研究主题的重心有所转移,从对"大学与知识"关系的强调转向了对"大学与社会"关系的重视,且呈现出集中和分散并存的趋势;研究方法日趋多样,方法意识有所增强,注重运用历史计量、案例研究、集体传记、比较研究等新式方法;研究史料也日益丰富,实物史料和口述史料的应用逐渐增多。

关键词：《大学史》西方大学史大学史研究

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从《左传》赋诗看《韩诗外传》解诗说

河南师范大学学报（哲学社会科学版） 2010年第4期37卷 192-196页

作者：于淑娟浙江师范大学人文学院浙江金华321004

对《韩诗外传》一书的性质,有解诗说、用诗说及调和之论。《左传》中的赋诗是学界公认的用诗典范。考察两书中同一诗句的运用,有明显差异:《左传》中赋诗是叙事情节中的组成部分,起着传情达意的重要功能,而不需考虑所传递的意义是否合... 详细信息

对《韩诗外传》一书的性质,有解诗说、用诗说及调和之论。《左传》中的赋诗是学界公认的用诗典范。考察两书中同一诗句的运用,有明显差异:《左传》中赋诗是叙事情节中的组成部分,起着传情达意的重要功能,而不需考虑所传递的意义是否合乎儒学义理,带有随机性。而《韩诗外传》中,往往是经师从儒学的角度设置多个含义相似的故事来解说同一诗句。多个同类故事对诗句的多重经学解读,体现了经师叙事解诗的预设性,印证了《韩诗外传》叙事解诗的经学性质。

关键词：《诗经》《左传》《韩诗外传》赋诗解诗