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数智时代教育技术学专业人才培养:局限性、作用域与知识框架

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黑龙江高教研究 2024年第3期42卷 58-62页

作者：李志河冯燕李瑞萱山西师范大学山西太原030000

数智时代呼啸而来,教育技术学专业致力于培养未来促进教育现代化发展的教育信息化人才。由此聚焦于我国教育技术学专业在人才培养中存在的毕业生就业困难以及培养理念、培养结构等不符合社会需要等问题,对人才培养的局限性进行分析,厘... 详细信息

数智时代呼啸而来,教育技术学专业致力于培养未来促进教育现代化发展的教育信息化人才。由此聚焦于我国教育技术学专业在人才培养中存在的毕业生就业困难以及培养理念、培养结构等不符合社会需要等问题,对人才培养的局限性进行分析,厘清数智时代教育技术学专业人才培养的新方向,借助专业人才培养的作用域梳理与整体框架设计,明确数智时代教育技术学专业人才培养的新内容,形成宏观标准向能力要素延展的融会贯通。

关键词：数智时代教育技术学局限性作用域知识框架

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北盘江大桥推荐桥位安龙岸边坡稳定性分析

科学技术与工程 2024年第10期24卷 4222-4228页

作者：李和志葛莎贺建清梅松华叶智淼湖南城建职业技术学院市政与路桥工程系湘潭411104 湖南科技大学土木工程学院湘潭411201 中南电建集团中南勘测设计研究院有限公司长沙410014

根据工程地质分析,北盘江大桥推荐桥位安龙岸边坡施加工程荷载后,存在滑动破坏的可能性。为判断安龙岸边坡的稳定性,分别采用Slide.v6007、Phase2 V9.0边坡稳定分析计算软件和FLAC 3D软件对安龙岸边坡进行二维和三维稳定性计算分析。计... 详细信息

根据工程地质分析,北盘江大桥推荐桥位安龙岸边坡施加工程荷载后,存在滑动破坏的可能性。为判断安龙岸边坡的稳定性,分别采用Slide.v6007、Phase2 V9.0边坡稳定分析计算软件和FLAC 3D软件对安龙岸边坡进行二维和三维稳定性计算分析。计算分析显示,安龙岸边坡稳定性计算安全系数大于安全系数设计标准,从理论分析来看该边坡处于稳定状态,并且有一定的安全裕度。相对于二维分析的计算安全系数,三维分析的计算安全系数要大。安龙岸边坡稳定性分析结论为北盘江大桥推荐桥位的初步设计提供了较为合理的依据。

关键词：边坡稳定性二维分析三维分析安全系数

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基于CAESARⅡ的供热疏水管道设计优化

电站系统工程 2024年第1期40卷 64-66页

作者：李志贺王金龙山西潞光发电有限公司哈尔滨电站设备成套设计研究所有限公司

在热电厂汽水管道设计的过程中,为了安全起见,会将整个管系的柔性设计得适当偏大,以保证管道能够充分吸收热胀变形而降低二次应力,保护设备及管道安全。这样的做法在管道输送单相流体且管内压力稳定的工况下较为可靠,但若管内存在汽水... 详细信息

在热电厂汽水管道设计的过程中,为了安全起见,会将整个管系的柔性设计得适当偏大,以保证管道能够充分吸收热胀变形而降低二次应力,保护设备及管道安全。这样的做法在管道输送单相流体且管内压力稳定的工况下较为可靠,但若管内存在汽水两相流或内部压力频繁波动的工况,则会造成整趟管道的剧烈晃动,不利于其长期运行。针对山西某电厂热网加热器疏水管道运行态剧烈晃动的问题,以美国动力管道标准ASME B31.1-2012为设计依据,利用CAESARⅡ对管道进行应力分析,在保证设备安全的前提下通过增加管道约束适当加强了管系刚度,取得了良好的效果。

关键词： CAESARⅡ 刚性柔性管口载荷管道应力

“双碳”背景下催化原理及应用教学模式探索与实践

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安徽化工 2024年第3期50卷 169-172页

作者：王绍庆李永军李宁李志合山东理工大学农业工程与食品科学学院山东淄博255000

针对“双碳”背景下新能源科学与工程专业人才培养与新时代企业用人要求匹配差、学生上课参与度低及创新实践动手能力差等问题,将“双碳”理念贯入整个教学环节,重点探究了“教师主导、学生为主”的理论授课方法,探索了“虚拟仿真实验-... 详细信息

针对“双碳”背景下新能源科学与工程专业人才培养与新时代企业用人要求匹配差、学生上课参与度低及创新实践动手能力差等问题,将“双碳”理念贯入整个教学环节,重点探究了“教师主导、学生为主”的理论授课方法,探索了“虚拟仿真实验-实验室小试实验-企业示范装置”三级驱动实践教学方法,建立了“双碳”背景下基于学为中心的催化原理及应用教学模式,助力绿色低碳理念纳入教育教学体系。

关键词：双碳催化原理新能源学为中心教学模式

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OsPDR20 is an ABCG metal transporter regulating cadmium accumulation in rice

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Journal of Environmental Sciences 2024年第2期136卷 21-34页

作者： he li Chao li Di Sun zhi Min Yang Department of Biochemistry and Molecular Biology College of Life SciencesNanjing Agricultural UniversityNanjing 210095China

Cadmium(Cd)is a non-essential toxic heavy metal,seriously posing high environmental risks to human *** genetic resources relevant to functional genes is important for understanding the metal absorption and accumulation in crops and bioremediation of Cd-polluted *** study investigated a functionally uncharacterized ATP binding cassette transporter G family(ABCG)gene encoding a Pleiotropic Drug Resistance 20(PDR20)type metal transporter which is localized to the plasma membrane of ***20 was transcriptionally expressed in almost all tissues and organs in lifespan and was strongly induced in roots and shoots of young rice under Cd *** expression of OsPDR20 in a yeast mutant ycf1 sensitive to Cd conferred cellular tolerance with less Cd *** of OsPDR20 by RNA interference(RNAi)moderately attenuated root/shoot elongation and biomass,with reduced chlorophylls in rice grown under hydroponic medium with 2 and 10μmol/L Cd,but led to more Cd accumulation.A field trial of rice grown in a realistic Cd-contaminated soil(0.40 mg/kg)showed that RNAi plants growth and development were also compromised compared to wild-type(WT),with smaller panicles and lower spikelet fertility but little effect on yield of ***,OsPDR20 suppression resulted in unexpectedly higher levels of Cd accumulation in rice straw including lower leaves and culm and *** results suggest that OsPDR20 is actively involved in Cd accumulation and homeostasis in rice *** increased Cd accumulation in the RNAi plants has the potential application in phytoremediation of Cd-polluted wetland soils.

关键词： Rice ABCG transporter Cadmium accumulation Phytoremediation

Beyond 1,4-addition of in-situ generated(aza-)quinone methides and indole imine methides

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Chinese Chemical Letters 2024年第7期35卷 35-53页

作者： Yan-li li zhi-Ming li Kai-Kai Wang Xiao-Long he Medical College Xinxiang UniversityXinxiang 453000China School of Pharmacy Xinxiang UniversityXinxiang 453000China School of Food and Bioengineering Xihua UniversityChengdu 610039China

The conjugate addition of in-situ generated(aza-)quinone methides(QMs)and indole imine methides(IIMs)emerged as a powerful protocol to access densely functionalized benzenes and *** alcohols,aminobenzhydryl alcohols,and varied indolylmethanols served as most effective precursors for the in-situ generation of such reactive species under acid *** relevant propargylic alcohol has proven to be an elegant precursor to generate the propargylic-QMs and-IIMs via the acid promoted dehydration process,thus enabling diverse challenging remote activation to proceed conjugate1,6-and 1,***,the heteroarene has proven to be workable to transfer the LUMO of the p-QMs and 2-IIMs,thus inducing the remote nucleophilic dearomative *** conjugate additions of(aza-)p-QMs and varied IIMs has made significant contribution in the field of remote activation chemistry in past *** review summarizes the latest advances of the remote conjugate additions of the in-situ generated QMs and IIMs.

关键词： Conjugate addition QMs IIMs LUMO Remote activation Dearomative addition

Managing immune checkpoint inhibitor-associated gastritis: Insights and strategies

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World Journal of Gastroenterology 2024年第24期30卷 3120-3122页

作者： li-li Yu zhi-lin he Xin-Lai Qian Department of Pathology The Third Affiliated Hospital of Xinxiang Medical UniversityXinxiang Medical UniversityXinxiang 453003Henan ProvinceChina Department of Basic Medical Sciences Xinxiang Medical UniversityXinxiang 453003Henan ProvinceChina

Immune checkpoint inhibitors(ICIs)are widely used due to their effectiveness in treating various ***-related adverse events(irAEs)are defined as adverse effects resulting from ICI *** irAEs are a common type of irAEs characterized by intestinal side effects,such as diarrhea and colitis,which may lead to the discontinuation of ICIs.

关键词： Immunotherapy Immune checkpoint inhibitor Immune checkpoint inhibitor-related gastritis Immune-related adverse events Autoimmune responses

Study of primordial deuterium abundance in Big Bang nucleosynthesis

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Nuclear Science and Techniques 2024年第3期35卷 208-215页

作者： zhi-lin Shen Jian-Jun he Key Laboratory of Beam Technology of Ministry of Education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China Institute of Radiation Technology Beijing Academy of Science and TechnologyBeijing 100875China

Big Bang nucleosynthesis(BBN)theory predicts the primordial abundances of the light elements^(2) H(referred to as deuterium,or D for short),^(3)he,^(4)he,and^(7) li produced in the early *** these,deuterium,the first nuclide produced by BBN,is a key primordial material for subsequent *** date,the uncertainty in predicted deuterium abundance(D/H)remains larger than the observational *** this study,the Monte Carlo simulation code PRIMAT was used to investigate the sensitivity of 11 important BBN reactions to deuterium *** found that the reaction rate uncertainties of the four reactions d(d,n)^(3)he,d(d,p)t,d(p,γ)^(3)he,and p(n,γ)d had the largest influence on the calculated D/H ***,the calculated D/H uncertainty cannot reach observational precision even with the recent LUNA precise d(p,γ)^(3) he *** the nuclear physics aspect,there is still room to largely reduce the reaction-rate uncertainties;hence,further measurements of the important reactions involved in BBN are still necessary.A photodisintegration experiment will be conducted at the Shanghai Laser Electron Gamma Source Facility to precisely study the deuterium production reaction of p(n,γ)d.

关键词： Big Bang nucleosynthesis Abundance of deuterium Reaction cross section Reaction rate Monte Carlo method

Near-infrared non-fused electron acceptors for efficient organic photovoltaics

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Chinese Chemical Letters 2024年第4期35卷 436-441页

作者： Wenxiang Ma Xinyu he Tianyi Chen De-li Ma Hongzheng Chen Chang-zhi li State Key Laboratory of Silicon and Advanced Semiconductor Materials Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

Developing narrow-bandgap organic semiconductors is important to facilitate the advancement of organic photovoltaics(OPVs). herein, two near-infrared non-fused ring acceptors(NIR NFRAs), PTBFTT-F and PTBFTT-Cl have been developed with A-π_A-π_D-D-π_D-π_A-A non-fused structures. It is revealed that the introduction of electron deficient π-bridge(π_A) and multiple intramolecular noncovalent interactions effectively retained the structural planarity and intramolecular charge transfer of NFRAs, extending strong NIR photon absorption up to 950 nm. Further, the chlorinated acceptor, with the enlarged π-surface compared to the fluorinated counterpart, promoted not only molecular stacking in solid, but also the desirable photochemical stability in ambient, which are helpful to thereby improve the exciton and charge dynamics for the corresponding OPVs. Overall, this work provides valuable insights into the design of NIR organic semiconductors.

关键词： Organic photovoltaic Near-infrared Non-fused electron acceptor Noncovalent interaction Stability