检索结果-南通市图书馆

High-temperature wetting behavior between slag and refractory

在线全文

学校读者我要写书评

暂无评论

Journal of Iron and Steel Research International 2024年第6期31卷 1304-1319页

作者： Yong-xin wang ya-ge Li ya-bo Gao Zhong Huang Hai-jun Zhang The State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and TechnologyWuhan 430081HubeiChina

Slag corrosion is one of the main factors of the damage of refractory,and its primary manifestations involve the melting of refractory in slag and the slag penetration into refractory,both of which are highly related to the wetting behavior between slag and *** high-temperature wettability could be characterized by parameters including the surface tension,adhesion work,and spreading coefficient of the slag on refractory surface,and it could be suppressed by altering the slag/refractory interface,thus resulting in an improved anti-corrosion *** this,the key knowledges of the slag corrosion,theory of wetting behavior and test of high-temperature contact angle were firstly ***,the major factors influencing the high-temperature slag wetting behavior were discussed based on the aspects of slag composition,refractory composition,and surface ***,the future research direction was proposed in this field.

关键词： High-temperature wetting Refractory Slag corrosion Surface tension

Influence of secondary lining thickness on mechanical behaviours of double-layer lining in large-diameter shield tunnels

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Underground Space 2024年第5期18卷 130-150页

作者： Shimin wang Xuhu He Xiaoyu Peng ya wang Zhengxin Li Zihan Song Key Laboratory of Transportation Tunnel Engineering Ministry of EducationSouthwest Jiaotong UniversityChengdu 610031China School of Civil Engineering Southwest Jiaotong UniversityChengdu 610031China

In large-diameter shield tunnels,applying the double-layer lining structure can improve the load-bearing properties and maintain the stability of segmental *** secondary lining thickness is a key parameter in the design of a double lining structure,which is worth being *** on an actual large-diameter shield tunnel,loading model tests are carried out to investigate the effect of the secondary lining thickness on the mechanical behaviours of the double lining *** test results show that within the range of secondary lining thicknesses discussed,the load-bearing limit of the double-layer lining increases with growing secondary lining *** a passive support,the secondary lining acts as an auxiliary load-bearing structure by contacting the *** changes in secondary lining thickness have a significant effect on the contact state between the segment and secondary lining,with both the contact pressure level and the contact area between the two *** double-layer lining structures in large-diameter shield tunnels,it is proposed that the stiffness of the secondary lining needs to be matched to the stiffness of the segment,as this allows them to have a coordinated deformation and a good joint load-bearing effect.

关键词： Large-diameter shield tunnels Double-layer lining structure Secondary lining thickness Stiffness matching Similar model test

Frost Resistance of Pervious Concrete Mixed with Waste Glass Powder

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Wuhan University of Technology(Materials Science) 2024年第5期39卷 1325-1336页

作者： AN Baofeng LI qiong QIAO Hongxia SU Rui wang Xi wang Chaoqun JIAO Daowei School of Civil Engineering Lanzhou University of TechnologyLanzhou 730050China Gansu Advanced Civil Engineering Materials Engineering Research Center Lanzhou 730050China China Construction First Group The Fifth Construction Co.Ltd Beijing 100000China

The contents of waste glass powder(WGP)(0%,10%,15%,20%,25%)and water-binder ratio(W/C)(0.24,0.26,0.28)were used as influencing factors,and the quality loss rate(Δm)and compressive strength loss rate(Δfc)were used as characterization *** Ca/Si ratio and main element contents of C-S-H gels with different WGP content were investigated by energy dispersive spectrometry(EDS).The pore structure evolution characteristics of WGP composite cementing materials were investigated by low field nuclear magnetic resonance(NMR).UsingΔfc as the index of frost resistance degradation and Weibull function,the frost resistance degradation of glass doped pervious concrete(WGP-PC)was *** results show that,with WGP,for the same number of cycles,Δm andΔfc decrease and increase with the increase of *** the same WGP content,Δm andΔfc decrease first and then increase with the increase of W/*** 100 freeze-thaw cycles,the samples with WGP content of 20%and W/C of 0.26 have the best *** tests show that with the increase of WGP content,the Ca/Si ratio of C-S-H gel decreases at first and then increases with the increase of WGP *** extreme value of Ca/Si is 2.36 when WGP is added by 20%.The pore volume of hardened paste with 20%WGP content decreased by 18.6%compared with that of cement system without *** overall compactness of the specimen was *** the basis of the test data,a life prediction model was established according to Weibull *** experiment showed thatΔfc could be used as a durability degradation index,and the slope of the reliability curve became gentle after WGP was added,which reduced the damage degradation rate of PC.W/C was ***'s about 5000 hours.

关键词： pervious concrete glass powder frost resistance energy dispersive analysis test low field nuclear magnetic resonance instrument life prediction

Solution-processed rare-earth thulium oxide with high permittivity for low-voltage transistor and inverters applications

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第8期42卷 1604-1609,I0007页

作者： Daiming Liu Fei wang Yongtao Zhang ya'nan Ding Shandong Engineering Laboratory for Preparation and Application of High-performance Carbon-Materials College of Electromechanical EngineeringQingdao University of Science&TechnologyQingdao266061China College of Electronic and Information Engineering Shandong University of Science and TechnologyQingdao266590China

The use of high-permittivity(high-k) thin films as gate dielectrics is essential in the development of lowpower electronics,In this work,rare-earth thulium oxide(Tm_(2)O_(3)) thin films were prepared by a facile solution process and annealed at various temperatures from 400 to 700℃.The evolution of the physical and dielectric properties of Tm_(2)O_(3) thin film with annealing temperature was *** is demonstrated that the Tm_(2)O_(3) thin film annealed at 600℃ exhibits the optimal performance,including a low leakage current of 3×10^(-10) A/cm^(2),a large areal capacitance of 250 nF/cm^(2) at 100 Hz,and a high permittivity value of *** Tm_(2)O_(3) thin film as a gate insulator was integrated into the thin film transistor(TFT) employing In_(2)O_(3)-based semiconducting *** In_(2)O_(3) TFT with 600℃-annealed Tm_(2)O_(3) dielectric exhibits the superior perfo rmance,with a high I_(on)/I_(off) of 1.65×10^(7),a small subthre shold swing(SS) value of 0.2 V/dec,a V_(TH) of+1.8 V,and a mobility of 1.68 cm^(2)/(V·s).Furthermore,an inverter constructed by connecting the TFT with a resistor exhibits full-swing *** work provides a facile and appealing method for preparing the high-k Tm_(2)O_(3) thin films as alternative gate dielectrics with the potential for use in low-power electronics and logic circuit applications.

关键词： Rare earths Tm_(2)O_(3) Dielectric Transistor Inverter

脱脂奶粉-水混合体系热致粘度变化特性的测定研究

在线全文

学校读者我要写书评

暂无评论

饮料工业 2024年第5期27卷 34-39页

作者：朱丽娟刘小杰吴伟都成官哲王雅琼吴琴薛玉清李言郡杭州娃哈哈集团有限公司浙江省食品生物工程重点实验室浙江杭州310018 上海城建职业学院上海201415

本文应用快速粘度测试仪建立了测定脱脂奶粉-水混合体系在升温-保持温度-降温三阶段测试程序中粘度随温度变化的方法,通过曲线中是否存在峰及峰值粘度的大小,以及运行结束时最终粘度的大小,评价奶粉在生产加工时经历的热处理变性程度。... 详细信息

本文应用快速粘度测试仪建立了测定脱脂奶粉-水混合体系在升温-保持温度-降温三阶段测试程序中粘度随温度变化的方法,通过曲线中是否存在峰及峰值粘度的大小,以及运行结束时最终粘度的大小,评价奶粉在生产加工时经历的热处理变性程度。本文研究了脱脂奶粉-水混合体系中奶粉比例、温度程序中保持温度的高低及保持时间的长短对测定结果的影响。实验结果表明:实验条件明显影响粘度随温度的变化曲线。为使奶粉中蛋白质在水中充分凝胶,同时保证凝胶强度及粘度落在一定范围,最适宜实验条件分别为:奶粉比例为44.5%(m/m),保持温度为90℃、保持时间为5min。在此最优条件下,选择了在粘度曲线中分别出现两个峰与一个峰的两批脱脂奶粉,在同一天内每隔一小时以及连续七天每隔一天分别进行奶粉-水混合体系的热致凝胶特性测定,实验结果具有较好的重复性,各个峰及最终粘度的相对标准偏差均小于5%。

关键词：脱脂奶粉快速粘度测定仪热致粘度变化温度程序

BLUPmrMLM:A Fast mrMLM Algorithm in Genome-wide Association Studies

在线全文

学校读者我要写书评

暂无评论

Genomics, Proteomics & Bioinformatics 2024年第3期22卷 55-67页

作者： Hong-Fu Li Jing-Tian wang qiong Zhao Yuan-Ming Zhang College of Plant Science and Technology Huazhong Agricultural UniversityWuhan 430070China

Multilocus genome-wide association study has become the state-of-the-art tool for dissecting the genetic architecture of complex and multiomic ***,most existing multilocus methods require relatively long computational time when analyzing large *** address this issue,in this study,we proposed a fast mrMLM method,namely,best linear unbiased prediction multilocus random-SNP-effect mixed linear model(BLUPmrMLM).First,genome-wide single-marker scanning in mrMLM was replaced by vectorized Wald tests based on the best linear unbiased prediction(BLUP)values of marker effects and their variances in ***,adaptive best subset selection(ABESS)was used to identify potentially associated markers on each chromosome to reduce computational time when estimating marker effects via empirical ***,shared memory and parallel computing schemes were used to reduce the computational *** simulation studies,BLUPmrMLM outperformed GEMMA,EMMAX,mrMLM,and FarmCPU as well as the control method(BLUPmrMLM with ABESS removed),in terms of computational time,power,accuracy for estimating quantitative trait nucleotide positions and effects,false positive rate,false discovery rate,false negative rate,and F1 *** the reanalysis of two large rice datasets,BLUPmrMLM significantly reduced the computational time and identified more previously reported genes,compared with the aforementioned *** study provides an excellent multilocus model method for the analysis of large-scale and multiomic *** software mrMLM v5.1 is available at BioCode(https://***/biocode/tool/BT007388)or GitHub(https://***/YuanmingZhang65/mrMLM).

关键词： Genome-wide association study BLUP Multilocus model mrMLM Large-scale dataset

Deep tectonics and seismogenic mechanisms of the seismic source zone of the Jishishan M_(s)6.2 earthquake on December 18,2023,at the northeast margin of the Tibetan Plateau

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Earth and Planetary Physics 2024年第3期8卷 514-521页

作者： qiong wang ShuYu Li XinYi Li Yue Wu PanPan Zhao Yuan Gao Key Laboratory of Earthquake Prediction Institute of Earthquake ForecastingChina Earthquake AdministrationBeijing 100036China Institute of Geophysics China Earthquake AdministrationBeijing 100081China

On December 18,2023,an M_(s)6.2 earthquake occurred in Jishishan,Gansu Province,*** earthquake happened in the eastern region of the Qilian Orogenic Belt,which is situated at the forefront of the NE margin of the Tibetan Plateau(i.e.,Qinghai-Tibet Plateau),encompassing a rhombic-shaped area that intersects the Qilian-Qaidam Basin,Alxa Block,Ordos Block,and South China *** this study,we analyzed the deep tectonic pattern of the Jishishan earthquake by incorporating data on the crustal thickness,velocity structure,global navigation satellite system(GNSS)strain field,and *** discovered that the location of the earthquake was related to changes in the crustal *** results showed that the Jishishan M_(s)6.2 earthquake occurred in a unique position,with rapid changes in the crustal thickness,Vp/Vs,phase velocity,and S-wave *** epicenter of the earthquake was situated at the transition zone between high and low velocities and was in proximity to a low-velocity ***,the source area is flanked by two high-velocity anomalies from the east and *** principal compressive strain orientation near the Lajishan Fault is primarily in the NNE and NE directions,which align with the principal compressive stress direction in this *** some areas of the Lajishan Fault,the principal compressive strain orientations show the NNW direction,consistent with the direction of the upper crustal fast-wave polarization from local earthquakes and the phase velocity azimuthal *** features underscore the relationship between the occurrence of the Jishishan M_(s)6.2 earthquake and the deep inhomogeneous structure and deep tectonic *** NE margin of the Tibetan Plateau was thickened by crustal extension in the process of northeastward expansion,and the middle and lower crustal materials underwent structural deformation and may have been filled with salt-containing fluids during the extension *** presence

关键词： Jishishan M_(s)6.2 earthquake crustal structure anisotropy stress and strain seismogenic mechanism northeast margin of the Tibetan Plateau

Effects of surface energy and substrate on modulus determination of biological films by conical indentation

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2024年第6期67卷 1757-1764页

作者： DING Yue LI Cheng-ya NIU XinRui wang Gang-Feng Department of Engineering Mechanics SVLXi’an Jiaotong UniversityXi’an710049China Department of Mechanical Engineering City University of Hong KongHong Kong SAR999077China

Micro-/nano-indentation has become prevalent in evaluating the mechanical characteristics of biological samples,such as cells and ***,the existing contact models describing conical indentation ignore the joint effects of surface energy and substrate,and consequently cannot accurately extract the Young's modulus of biological samples deposited on *** finite element methods,we examine the conical indentation of biological films on substrates while taking surface energy into *** on the dimensional analysis,the explicit relationship between load and indentation depth is achieved for films with their moduli varying from 0.001 to 100 times that of the *** the classical Sneddon's model was employed to analyze the load-depth data,the measured modulus could reach 18 times the real modulus for films on harder substrates,but only 4%of the real modulus for films on softer ***,in micro-/nano-indentations,neglecting the contribution of surface energy would result in an overestimation of the Young's modulus of films depending on the contact *** analytical expression provided here can be utilized to precisely deduce the mechanical characteristics of biological films deposited on substrate from the load and indentation depth data of a conical indentation.

关键词： biological film surface effect substrate effect indentation

The MtRGF6 Peptide Differentially Regulates Root Development and Symbiotic Nodulation of Medicago truncatula and Lotus japonicus

在线全文

学校读者我要写书评

暂无评论

Phyton-International Journal of Experimental Botany 2024年第6期93卷 1237-1248页

作者： Junhui yan yawen wang qiong Li Yu Zhou Xu wang Li Luo School of Life Sciences Shanghai Key Laboratory of Bio-Energy CropsShanghai UniversityShanghai200444China College of Life Science State Key Laboratory of Tea Plant Biology and UtilizationAnhui Agricultural UniversityHefei230036China

Rhizobia induces nitrogen-ﬁxing nodules in legumes used in agricultural production,providing a direct source of combined nitrogen to leguminous *** peptides,such as CLAVATA3/EMBRYO SURROUNDING REGION peptides(CLE),are known to regulate the formation and development of nitrogen-ﬁxing nodules in *** meristem growth factor(RGF)peptides from Medicago truncatula not only regulate root develop-ment but also modulate nodulation symbiosis with Sinorhizobium ***,the impact of RGF peptides from one leguminous species on the others remains *** this study,we investigate the effects of the RGF family peptide MtRGF6p from *** on nodulation symbiosis and root development in Lotus *** MtRGF6 gene is predominantly expressed in the root nodules of *** and shows low identity with RGF homologous genes from *** gene promoter is active in the primordia of root nodules and lat-eral roots,as well as in young nodules and roots,and the meristem,infection,and nitrogen-ﬁxing regions of the mature *** synthesized MtRGF6p promoted primary root growth in *** but sup-pressed the growth of *** primary *** peptide negatively affected the initiation of nodule primor-dia,the formation of infection threads,and nodulation in both legumes,with a low dosage showing effects on *** compared to *** results suggest that the MtRGF6 peptide from *** may serve as an inter-species signal affecting the root organ development of ***.

关键词： Peptide RGF legume symbiotic nodulation lateral root