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Chinese Journal of Biomedical Engineering 2024年第2期33卷 76-84页

作者： TU Tao zhao li-wen WU Qin-fu Longyan First Affiliated Hospital of Fujian Medical University

Objective: To investigate the effect of allicin on the formation of kidney stones in rats by regulating the expression of osteopontin(OPN) and nuclear factor-κB(NF-κB) signaling pathway. Methods: A total of 50 healthy adult male SD rats with SPF grade were selected and divided into five groups by random number and computer random combination, with 10 rats in each group. Except the blank group, the other four groups were given 2 m L/d mixed solution of 1% ethylene glycol+2% ammonium chloride to construct the nephrolith model. During the modeling process, the blank group and the model group were given normal saline by gavage. The positive group was given 600 mg/(kg·d) of potassium sodium hydrogen citrate granules by gavage, the low-dose group was given 7.5 mg/(kg·d) of allicin by gavage, and the high-dose group was given 15 mg/(kg·d)of allicin by gavage. After administration, renal function, urine related indicators, calcium oxalate crystallization score, OPN protein expression and NF-κB signaling pathwayrelated protein expression were observed and compared among the five groups of ***: There were significant differences in kidney index, urea nitrogen(BUN) and blood creatinine(Cr) levels among the five groups(P0.05), and were all lower than those in the model group and low-dose group(Plic acid(OA), calcium(Ca),magnesium(Mg), and phosphorus(P) in the urine of five groups of rats(P0.05), and all were lower than the model group and low-dose group(Plization and the expression of OPN protein in the five groups(P<0.05). There was no difference in the scores of calcium oxalate crys

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牙支持式导板下即刻种植修复前牙单牙缺失的效果及对美学指数的影响

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四川生理科学杂志 2024年第4期46卷 721-723页

作者：赵文莉河南大学第一附属医院口腔科河南开封475000

目的:探讨于牙支持式导板下即刻种植修复前牙单牙缺失的效果及对美学指数的影响。方法:选取本院2020年10月至2022年10月期间收治的68例前牙单牙缺失患者作为研究对象,随机分为观察组与对照组,各34例。观察组在牙支持式导板下行即刻种植... 详细信息

目的:探讨于牙支持式导板下即刻种植修复前牙单牙缺失的效果及对美学指数的影响。方法:选取本院2020年10月至2022年10月期间收治的68例前牙单牙缺失患者作为研究对象,随机分为观察组与对照组,各34例。观察组在牙支持式导板下行即刻种植修复,对照组在常规导板下行即刻种植修复。术前与术后即刻行CBCT扫描测定术后精确度差异,术后3 m、术后6 m记录两组种植成功率,术后3 m、术后6 m采用红色美学指数(Pink ethetic score,PES)测定美学指数,术后3 m、术后6 m根据评分标准评价主观舒适度。结果:术后观察组根尖部、顶部、角度、深度的偏离值均较对照组显著减少(P0.05)。观察组术后3 m、术后6 m PES评分、主观舒适度评分均较对照组显著提高(P<0.05)。结论:牙支持式3D打印导板能提高前牙单牙缺失患者即刻种植精确度,提升美学效果和舒适度。

关键词：牙支持式导板即刻种植前牙单牙缺失美学指数精确度

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不对称钢箱梁涡激振动性能及制振措施研究

公路 2024年第1期69卷 111-115页

作者：胡佳赵文力潘霞翟杨王云帆成都天府绿道建设投资集团有限公司成都市610031

锦江人行天桥全长698 m,主桥部分上部结构为桅杆式斜拉桥,下部结构采用V形钢桥墩,主梁断面为左右不对称钢箱梁。为研究不对称钢箱梁断面的涡激振动特性,同时消除可能存在的涡激振动对主桥运营安全的影响,对主梁断面开展了1∶20节段模型... 详细信息

锦江人行天桥全长698 m,主桥部分上部结构为桅杆式斜拉桥,下部结构采用V形钢桥墩,主梁断面为左右不对称钢箱梁。为研究不对称钢箱梁断面的涡激振动特性,同时消除可能存在的涡激振动对主桥运营安全的影响,对主梁断面开展了1∶20节段模型风洞测振试验,针对主梁受气动干扰敏感和可调节气动外形的区域进行涡激振动气动措施研究。试验结果表明:不对称钢箱梁在前后两侧来流工况下,主梁均出现了涡激振动现象,但各工况下的涡振现象和风速锁定区间不同;对比了去除主梁栏杆和对栏杆间隔封闭的气动措施,采用对栏杆隔三封一能够抑制主梁的涡激振动。本研究所提出的制振措施可为类似工程研究提供参考。

关键词：桥梁工程锦江人行天桥不对称钢箱梁涡激振动风洞试验制振措施

精细化护理在缺血性脑卒中患者介入治疗围手术期中的应用效果

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四川解剖学杂志 2024年第1期32卷 161-163页

作者：王湛赵文利李海云河南省人民医院介入导管室河南省护理医学重点实验室郑州大学人民医院郑州450000

目的:探讨精细化护理在缺血性脑卒中患者介入治疗围手术期中的应用效果.方法:选择2021年6月至2022年4月在本院进行介入治疗的103例缺血性脑卒中患者作为研究对象.依据围手术期采取的不同干预模式,将其分为观察组(n=52,采取精细化护理措... 详细信息

目的:探讨精细化护理在缺血性脑卒中患者介入治疗围手术期中的应用效果.方法:选择2021年6月至2022年4月在本院进行介入治疗的103例缺血性脑卒中患者作为研究对象.依据围手术期采取的不同干预模式,将其分为观察组(n=52,采取精细化护理措施)与对照组(n=51,采取常规护理措施).比较两组的护理满意度及并发症发生率.结果:观察组的护理满意度为96.15%(50/52),明显高于对照组的76.47%(39/51),差异有统计学意义(P<0.05);观察组的并发症发生率为17.30%(9/52),明显低于对照组的49.01%(25/51),差异有统计学意义(P<0.05).结论:对缺血性脑卒中患者介入治疗围手术期实施精细化护理,有利于降低其围手术期并发症发生率,提高手术安全性,应用效果更佳,值得临床应用和推广.

关键词：缺血性脑卒中介入治疗围手术期精细化护理应用效果

改良盾构术联合浓缩生长因子用于前牙缺损修复中的美学效果及对种植区骨量的影响

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中国医疗美容 2024年第4期14卷 84-87页

作者：卢洋苑艺芳李娟赵文莉贾宝超河南大学第一附属医院口腔科河南开封475000 哈尔滨市第一医院口腔一科黑龙江哈尔滨150010

目的探讨分析改良盾构术联合浓缩生长因子用于前牙缺损修复中的美学效果及对种植区骨量的影响。方法于2020.8~2023.8期间,选取我院收治的前牙缺损患者66例,均接受改良盾构术联合浓缩生长因子治疗,观察其美学效果及对种植区骨量的影响。... 详细信息

目的探讨分析改良盾构术联合浓缩生长因子用于前牙缺损修复中的美学效果及对种植区骨量的影响。方法于2020.8~2023.8期间,选取我院收治的前牙缺损患者66例,均接受改良盾构术联合浓缩生长因子治疗,观察其美学效果及对种植区骨量的影响。结果术后6个月红色美学指数(PES)评分、角化龈厚度、角化龈宽度高于术前(P0.05);术后7d龈沟液C反应蛋白(CRP)、白介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)较术后1d低(P<0.05);患者对前牙缺损修复治疗结果的满意度为96.97%。结论改良盾构术联合浓缩生长因子用于前牙缺损修复中能获得较高的美学效果,增加角化龈厚度、宽度,维持种植区骨量,也有助于降低局部炎症反应,加速愈合,且患者满意度高。

关键词：改良盾构术浓缩生长因子前牙缺损种植修复种植区骨量

An Approximation Algorithm Based on Seeding Algorithm for Fuzzy k-Means Problem with Penalties

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Journal of the Operations Research Society of China 2024年第2期12卷 387-409页

作者： wen-zhao liu Min li School of Mathematics and Statistics Shandong Normal UniversityJinan 250014ShandongChina

As a classic NP-hard problem in machine learning and computational geometry,the k-means problem aims to partition the given dataset into k clusters according to the minimal squared Euclidean *** from k-means problem and most of its variants,fuzzy k-means problem belongs to the soft clustering problem,where each given data point has relationship to every center *** to fuzzy k-means problem,fuzzy k-means problem with penalties allows that some data points need not be clustered instead of being paid *** this paper,we propose an O(αk In k)-approximation algorithm based on seeding algorithm for fuzzy k-means problem with penalties,whereαinvolves the ratio of the maximal penalty value to the minimal ***,we implement numerical experiments to show the effectiveness of our algorithm.

关键词： Approximation algorithm Seeding algorithm Fuzzy k-means problem with penalties

Synthesis of Novel 1-Arylsulfonyl-4-(1′-N-2′, 3′, 4′, 6′-tetra- O-acetyl-β-D-glucopyranosyl)thiosemicarbazides

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Chinese Chemical Letters 2006年第2期17卷 153-155页

作者： Yu Xin li Zheng Ming li Wei Guang zhao wen li DONG Su Hua WANG State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071

The synthesis of novel 1-arylsulfonyl -4- （1＇-N -2＇, 3＇, 4＇, 6＇-tetra-O-acetyl-β-D-gluco- pyranosyl） thiosemicarbazides via condensation of 2, 3, 4, 6-tetra-O-acetyl-β-D-glucopyranosyl isothiocyanate with substituted phenylsulfonyl hydrazines was described. Their structures and physical properties were confirmed by ^1H NMR, ^13C NMR spectra, elemental analysis and MS.

关键词： Phenylfulfonyl hydrazine thiosemicatbazide condensation.

Spatially Coupled Codes via Bidirectional Block Markov Superposition Transmission

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Tsinghua Science and Technology 2024年第3期29卷 656-670页

作者： Gaoyan li Shancheng zhao Haiqiang Chen Jinming wen College of Information Science and Technology Jinan UniversityGuangzhou 510632China Guangxi Key Laboratory of Multimedia Communications and Network Technology Guangxi UniversityNanning 530004China

In this paper,we present a new class of spatially coupled codes obtained by using both non-recursive and recursive block-oriented *** resulting codes are termed as bidirectional block Markov superposition transmission(BiBMST)***,we perform an iterative decoding threshold analysis according to protograph-based extrinsic information transfer(PEXIT)charts for the BiBMST codes over the binary erasure channels(BECs).Secondly,we derive the generator and parity-check matrices of the BiBMST ***,extensive numerical results are presented to show the advantages of the proposed BiBMST ***,our numerical results show that,under the constraint of an equal decoding latency,the BiBMST codes perform better than the recursive BMST(rBMST)***,the simulation results show that,in finite-length regime,negligible performance gain is obtained by increasing the encoding *** solve this limitation by introducing partial superposition,and the resulting codes are termed as partially-connected BiBMST(PC-BiBMST)*** results have confirmed the advantages of the PC-BiBMST codes over the original BiBMST *** also present extensive simulation results to show the performance advantages of the PC-BiBMST codes over the spatially coupled low-density parity-check(SC-LDPC)codes,spatially coupled generalized LDPC(SC-GLDPC)codes,and the original BiBMST codes in the finite-length regime.

关键词： block Markov superposition transmission(BMST) protograph-based extrinsic information transfer(PEXIT) capacity-approaching codes spatial coupling

Reversible isomerization of donor-acceptor Stenhouse adduct derivatives in water through dendritic confinement

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Science China Chemistry 2024年第5期67卷 1636-1646页

作者： Jiaxing Zhang Qingyun zhao Xinyan Su Afang Zhang wen li International Joint Laboratory of Biomimetic and Smart Polymers School of Materials Science and EngineeringShanghai UniversityShanghai 200444China

Modulating reversible isomerization of hydrophobic dyes in aqueous solutions is greatly desired. Here we report on reversible isomerization of solvatochromic donor-acceptor Stenhouse adducts(DASAs) in water through the confinement from dendritic oligoethylene glycols(OEGs). Dendronization of DASAs with dendritic OEGs affords them characteristic thermoresponsiveness. These dendronized DASAs spontaneously isomerize in water from hydrophobic linear state into hydrophilic cyclic state at room temperature due to the strong hydration. However, hydrophobic microenvironment through thermally dehydration and collapse of the dendritic OEGs at elevated temperatures confines hydration of the DASA moieties and mediates their interactions with the collapsed hydrophobic OEG domains, affording their isomerization recovery in water efficiently from the hydrophilic cyclic state into the hydrophobic linear state. The confinement-mediated reversible isomerization of DASA moieties in water can be repeated through alternative photo-irradiation and thermal dehydrations, exhibiting excellent fatigue resistance.

关键词： dendrimers donor-acceptor Stenhouse adducts isomerization confinement thermoresponsiveness

Lowering Sodium-Storage Lattice Strains of Layered Oxide Cathodes by Pushing Charge Transfer on Anions

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Energy & Environmental Materials 2024年第4期7卷 99-106页

作者： Na li wen Yin Baotian Wang Fangwei Wang Xiaoling Xiao Jinkui zhao Enyue zhao Songshan Lake Materials Laboratory Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Spallation Neutron Source Science Center Institute of High Energy Physics Chinese Academy of Sciences College of Materials Science and Opto-electronic Technology Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences

Due to a high energy density,layered transition-metal oxides have gained much attention as the promising sodium-ion batteries ***,they readily suffer from multiple phase transitions during the Na extraction process,re... 详细信息

关键词： anionic redox reaction lattice strains layered oxide cathodes phase transitions sodium-ion battery