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Investigation of Granite Deformation Process under Axial Load Using LSTMBased Architectures

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Computer Modeling in Engineering & Sciences 2020年第8期124卷 643-664页

作者： yalei wang Jinming Xu Mostafa Asadizadeh Chuanjiang Zhong Xuejie Tao Department of Civil Engineering Shanghai UniversityShanghai200444China Institue for the Conservation of Cultural Heritage Shanghai UniversityShanghai200444China Department of Mining Engineering Hamedan University of TechnologyHamedan65155579Iran China Railway 17 Bureau Group Co. Ltd.Taiyuan030006China

Granite is generally composed of quartz,biotite,feldspar,and *** changes in digital parameters of these compositions reflect the detail of the deformation process of the ***,the estimation of the changes in digital parameters of the compositions is much helpful to understand the deformation and failure stages of the *** the current study,after dividing the frames in the video images photographed during the axial compression test into four parts(or,the upper left,upper right,lower left,and lower right ones),the digital parameters of various compositions in each part were then *** these parameters as input dataset,a long short-term memory(LSTM)based neural network was then established for exploring the changes of various *** dividing the deformation process into four stages based on the stress-strain curve and using the digital parameters of various compositions as the dataset,the LSTM-based neural network for estimating the rock deformation stage was also *** root mean squared error(RMSE)and goodness of fit(R2)and the average accuracy(ACC)were used to evaluate the efficiencies of these two LSTM-based neural *** influences of variables(such as the number of hidden layers,maximum epoch,learning rate,minimum batch size and train ratio)on efficiencies of the LSTM-based neural networks were thereafter *** shows that the super parameters have a great influence on the efficiency of the established LSTM-based neural network for estimating digital parameter changes of various compositions;the estimations were relatively good if the number of hidden layers,maximum epoch,learning ratio,minimum batch size,and train ratio is 2,150,0.005,10,and 0.8,respectively;the compositions with the greater percentage have a greater accuracy using the neural network;the great-small sequence of ACC is biotite,feldspar,crack,and quartz,if the LSTM-based architecture for estimating deformation stages was *** resu

关键词： Granite uniaxial load composition deformation stage LSTM-based neural network

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数字经济赋能区域经济协调发展机制研究

武汉纺织大学学报 2024年第4期37卷 74-85页

作者：邹彩芬魏琳鹏周雨佳王娅蕾武汉纺织大学会计学院湖北武汉430200 武汉东湖学院湖北武汉430212

发挥数字经济赋能城市经济是推动区域经济协调发展的重要途径。本文基于2011—2019年中国278个地级及以上城市的样本数据,实证分析数字经济对区域经济协调发展的影响机理及作用机制。研究发现,数字经济对推动区域经济协调发展具有显著... 详细信息

发挥数字经济赋能城市经济是推动区域经济协调发展的重要途径。本文基于2011—2019年中国278个地级及以上城市的样本数据,实证分析数字经济对区域经济协调发展的影响机理及作用机制。研究发现,数字经济对推动区域经济协调发展具有显著的积极影响,这一促进作用在东部和中心城市中更为显著;机制分析发现,数字经济可以通过形成经济集聚和提高科技创新能力,从而驱动区域经济协调发展;且具有明显的空间溢出效应。拓展分析发现,数字经济与区域经济差距存在明显的“倒U型”关系;企业持续性创新在数字经济与区域经济协调发展两者关系中起正向调节作用,且该作用在东部地区更加明显。因此,研究结论为数字经济对区域经济协调发展的影响效应和作用机制贡献了新的解释和证据。

关键词：数字经济区域协调发展创新效应经济集聚空间溢出

环境保护税感知度对畜禽养殖粪污资源化利用行为的影响

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现代农业 2024年第3期49卷 105-112页

作者：彭小珈王亚蕾刘统徐玥湖南农业大学商学院湖南长沙410128 湖南省畜牧水产事务中心湖南长沙410006

在绿色可持续发展的宏观背景下,探讨畜禽养殖主体对环境保护税的感知度,对促进畜禽粪污资源化利用具有重要且迫切的现实意义。本研究以2023年1—3月对湖南省910份畜禽养殖主体进行调查后的数据为研究样本,对环境保护税感知度与畜禽养殖... 详细信息

在绿色可持续发展的宏观背景下,探讨畜禽养殖主体对环境保护税的感知度,对促进畜禽粪污资源化利用具有重要且迫切的现实意义。本研究以2023年1—3月对湖南省910份畜禽养殖主体进行调查后的数据为研究样本,对环境保护税感知度与畜禽养殖粪污资源化利用行为之间存在的关系进行研究。结果表明:环境保护税感知度及其细分维度对规模场及养殖户畜禽粪污资源化利用行为有显著的正向影响,但影响程度存在差异。年龄、养殖收入占总收入的比例均对畜禽养殖主体资源化利用行为有显著的正向影响。据此提出以下建议:政府和相关组织要充分履行宣传职能,拓宽宣传渠道;提高产品的经济价值,扩大资源化产品市场,从而推动畜禽粪污资源化利用。

关键词：资源化利用环境保护税感知度畜禽养殖主体影响因素

The Application of Fertilizer and AMF Promotes Growth and Reduces the Cadmium and Lead Contents of Ryegrass (Lolium multiflorum L.) in a Copper Mining Area

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Phyton-International Journal of Experimental Botany 2023年第2期92卷 471-485页

作者： Jiaxin Chen Jiawei Guo Zhixin Yang Jiqing Yang Hengwen Dong Huiyun wang yalei wang Fangdong Zhan College of Resources and Environment Yunnan Agricultural UniversityKunming650201China College of Architecture and Engineering Yunnan Agricultural UniversityKunming650201China Kunming Prospecting Design Institute of China Nonferrous Metals Industry Co. Ltd.Kunming650051China

Heavy metal-polluted soil was collected from the Pulang copper mine in Shangri-La City,Yunnan Province,Southwest *** effects of fertilizer(organic and inorganic)and arbuscular mycorrhizal fungi(AMF)on ryegrass(Lolium multiflorum L.)growth,root morphology,mineral nutrition and cadmium(Cd)and lead(Pb)contents were investigated by pot *** results showed that both fertilizer and AMF significantly ameliorated the root morphology and mineral nutrition,reduced the Cd and Pb contents,and promoted the growth of *** all treatments,the combined application of organic–inorganic compound fertilizer with AMF had the highest effect,resulting in increases in root length,surface area and branch number by 2.3,1.1,and 3.9 times,respectively;an 88%increase in plant biomass;a nitrogen content increase of 2.3 and 1.2 times,and phosphorus content increase of 62%and 68%in shoots and roots,respectively was also recorded as well as decreases in Cd content by 34%and 62%and Pb content by 47%and 34%in shoots and roots,*** analysis showed that both fertilizer and AMF significantly promoted ryegrass growth(plant height,biomass,chlorophyll content,root length,nitrogen and phosphorus content)and reduced the Cd and Pb contents in roots,and there was a synergistic effect between ***,the nitrogen and phosphorus contents were very significantly positively correlated with the shoot and root biomasses but very significantly negatively correlated with the Cd and Pb contents of ***,the application of fertilizer and AMF synergistically improved ryegrass growth on polluted soils in the copper mining area.

关键词： Arbuscular mycorrhizal fungi heavy metal pollution organic–inorganic compound fertilizer ryegrass synergistic effect

Zircon U-Pb Age and Geochemistry of the Ore-hosting Ultramafic Complex of Zhou'an PGE-Cu-Ni Deposit,Henan Province,Central China

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Acta Geologica Sinica(English Edition) 2012年第6期86卷 1479-1487页

作者： YAN Haiqing DING Ruiying TANG Zhongli wang yalei LIU Shuang MA Jiahong HU Yanqiang CHEN Kena College of Earth Science and Resource Chang'An University College of Resource and Environmental Science Lanzhou University Key Laboratory of Western China's Mineral Resources and Geological Engineering Ministry of Education 815 Geological Team of East China Metallurgical and Geological Exploration Bureau

The Zhou＇an PGE-Cu-Ni deposit was recently discovered in the Qinling orogenic belt bound by the Yangtze and the North China Cratons. It is a blind deposit thoroughly covered by the Cenozoic alluvial sediments in the Nanyang Basin. As the first large PGE-Cu-Ni deposit discovered in the Qinling-Dabie-Sulu orogenic belt, its geological and geochemical characteristic, isotope age, genesis and tectonic setting are of wide concern in both scientific studies and ore exploration. In this contribution, we report the results obtained from a pioneering study. The Zhou＇an ultramafic complex is ferruginous, with m/f = 4.79-5.08, and shows the nature of tholeiite series. It is rich in light rare earth elements, Rb, Th, U, La, Sm, Zr and Hf, and poor in heavy rare earth elements, Nd and Ta, suggesting an intraplate setting. It has high S7Sr/S6Sr and low 143Nd/144Nd ratios. The ratios of Zr/Nb, La/Nb, Ba/ Nb, Rb/Nb, Th/Nb, Th/La and Ba/La, suggest the magma originated from lithosphere mantle. The Fo values of olivine and Pd/Ir-Ni/Cu diagram suggest primary magma was High Mg basalt. The laser ablation inductively coupled plasma atomic emission spectroscopy zircon U-Pb age is 641.5 ± 3.7 Ma.

关键词： zircon U-Pb age geochemistry ultramafic body PGE-Cu-Ni deposit tectonic setting

Ring-Opening Copolymerization of Biorenewable -Caprolactone with trans-Hexahydro-(4,5)-benzofuranone toward Closed-Loop Recyclable Copolyesters and Their Application as Pressure- Sensitive Adhesives

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Chinese Journal of Chemistry 2024年第17期42卷 2035-2042页

作者： Haining Niu Liying wang Zihan Zhang yalei Liu Yong Shen Zhibo Li State Key Laboratory Base of Eco-Chemical Engineering College of Chemical EngineeringQingdao University of Science and TechnologyQingdaoShandong266042China Key Laboratory of Biobased Polymer Materials Shandong Provincial Education DepartmentQingdao University of Science and TechnologyQingdaoShandong266042China

Copolymerization as an efficient strategy can provide an opportunity to create new closed-loop recyclable polymeric materials with tailored properties that are generally inaccessible to the individual *** this contribution,the bulk ring-opening copolymerization of bio-renewable-caprolactone and trans-hexahydro-(4,5)-benzofuranone was achieved to produce closed-loop recyclable copolyesters by using an organobase/urea binary catalyst at room *** obtained copolyesters exhibited composition-dependent thermal ***,the obtained copolyesters were able to depolymerize back to recover the corresponding monomers under mild conditions.

关键词： Recyclable polymers Ring-opening polymerization Copolymerization Pressure-sensitive adhesives Aliphatic polyesters

改良囊袋张力环联合囊袋内人工晶状体植入治疗马方综合征晶状体不全脱位术后人工晶状体脱位的临床特征及手术治疗

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中国眼耳鼻喉科杂志 2024年第4期24卷 260-267页

作者：陈泽旭贾婉楠王亚镭申鑫陈心姚蒋永祥复旦大学附属眼耳鼻喉科医院眼科上海200031

目的观察接受改良囊袋张力环(MCTR)联合囊袋内人工晶状体(IOL)植入治疗的马方综合征(MFS)晶状体不全脱位患者术后IOL脱位的发生率,并总结接受IOL复位或取出术MFS患者的临床特征。方法通过随访观察2015年1月—2020年6月于我院同一手术医... 详细信息

目的观察接受改良囊袋张力环(MCTR)联合囊袋内人工晶状体(IOL)植入治疗的马方综合征(MFS)晶状体不全脱位患者术后IOL脱位的发生率,并总结接受IOL复位或取出术MFS患者的临床特征。方法通过随访观察2015年1月—2020年6月于我院同一手术医师行MCTR植入术且术后随访3年以上的MFS患者术后IOL脱位情况,计算其IOL脱位发生率。通过回顾分析我院同期就诊的MFS合并IOL脱位患者的临床资料,分析其临床特征和手术选择。结果本研究共纳入同一手术医师行MCTR植入术患者115例(192眼),大部分患者为儿童(80.21%,154/192),中位随访时间4年(四分位范围:3.50,4.67)。随访期间共出现MCTR-IOL复合体脱位3例(3眼),脱位发生率为1.56%(3/192),其中2例为不全脱位、1例为全脱位。3例患者均为成人,IOL脱位发生时间为术后2~3年,均无明显诱因,直接原因均为缝线断裂。同期在我院接受IOL复位或取出术的MFS患者共16例。IOL脱位最常见的直接原因是缝线断裂(62.50%,10/16)、其次是缝线或可植入式囊袋拉钩在巩膜层间出现滑动松脱(18.75%,3/16)。对于出现不全脱位的CTR或MCTR患者,通过缝线再次固定张力环或植入囊袋拉钩可实现IOL复位;MCTR脱位进入玻璃体腔的患者接受了MCTR取出和经巩膜后房型IOL缝线固定术;对于其他手术方式的IOL脱位患者,多数患者实现了脱位IOL复位术(54.55%,7/13),少数患者进行了IOL置换术(30.77%,4/13),2例IOL取出后未植入IOL。结论MCTR植入术是治疗MFS合并晶状体不全脱位的一种安全、有效的手术方式,IOL脱位是其罕见并发症。MFS患者术后定期随访十分必要,甚至需要终生随访,早期干预IOL脱位可以取得较好的疗效。

关键词：马方综合征晶状体不全脱位人工晶状体脱位改良囊袋张力环

Application of Multicast-based Video Conference on CERNET Backbone

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计算机工程 2002年第S1期28卷 133-136页

作者： ZHANG Xuan, wang yalei, LI Chongrong(Network Research Center of Tsinghua University, Beijing 100084,China) Network Research Center of Tsinghua University Beijing 100084China

Multicast-based video conference is a representative application in advanced network. In multi-point video conference using multicast can get better efficiency facilitated by inner-group broadcast mechanism. In the application, the multicast-based network resources assignment, management and security should be considered together. This paper presents a framework model of multicast-based video conferencing application with three layers. And a practical multicast-based video conferencing is implemented in CERNET(China Education and Research Network) backbone. The practice is valuable for the development of multicast-based video conferencing application in China.

关键词： Multicast Video conference Network application

ENO1 expression and Erk phosphorylation in PDAC and their effects on tumor cell apoptosis in a hypoxic microenvironment

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Cancer Biology & Medicine 2022年第11期19卷 1598-1616页

作者： Huizhi Sun Jing Mo Runfen Cheng Fan Li Yue Li Yuhong Guo Yanlei Li Yanhui Zhang Xiaoyu Bai yalei wang Xueyi Dong Danfang Zhang Jihui Hao Tianjin Medical University Cancer Institute&Hospital National Clinical Research Center for CancerKey Laboratory of Cancer Prevention and TherapyTianjinTianjin's Clinical Research Center for CancerTianjin 300060China Department of Pathology Tianjin Medical UniversityTianjin300070China

Objective: Hypoxia is an important feature of pancreatic ductal adenocarcinoma(PDAC). Previously, we found that hypoxia promotes ENO1 expression and PDAC invasion. However, the underlying molecular mechanism was remains ***: The relationship between ENO1 expression and clinicopathological characteristics was analyzed in 84 patients with PADC. The effects of CoCl2-induced hypoxia and ENO1 downregulation on the apoptosis, invasion, and proliferation of PDAC cells were evaluated in vitro and in vivo. Hypoxia-and ENO1-induced gene expression was analyzed by transcriptomic ***: The prognosis of PDAC with high ENO1 expression was poor(P < 0.05). High ENO1 expression was closely associated with histological differentiation and tumor invasion in 84 PDAC cases(P < 0.05). Hypoxia increased ENO1 expression in PDAC and promoted its migration and invasion. Apoptotic cells and the apoptosis marker caspase-3 in the CoCl_(2)-treated ENO1-sh group were significantly elevated(P < 0.05). Transcriptomic sequencing indicated that CoCl_(2)-induced PDAC cells initiated MAPK signaling. Under hypoxic conditions, PDAC cells upregulated ENO1 expression, thereby accelerating ERK phosphorylation and inhibiting apoptosis(P < 0.05). Consistent results were also observed in a PDAC-bearing mouse hindlimb ischemia ***: Hypoxia-induced ENO1 expression promotes ERK phosphorylation and inhibits apoptosis, thus leading to PDAC survival and invasion. These results suggest that ENO1 is a potential therapeutic target for PDAC.

关键词： Pancreatic cancer hypoxia ENOl apoptosis Erk phosphorylation