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| 1 | Estimating life-cycle energy payback ratio of overhead transmission line toward low carbon development显示文摘The energy conservation plays an important role for low carbon development.In order to evaluate the energy conservation in the full life-cycle,a scheme to estimate the energy consumption,or alternatively the energy pay,in constructing an overhead transmission line is proposed in this paper.The analysis of a typical projection is given for demonstration.With new additional overhead transmission lines,the energy consumption,known as the power loss in power network,is expected to be decline,which is defined in this paper as the energy payback.In order to estimate this kind of contribution,the scheme that consisted of load forecast,production simulation for generating systems,load flow simulation and power loss calculation has been proposed.Case studies,based on the IEEE 24-bus test system,are given to demonstrate the efficacy of the schemes.Moreover,several presumptive scenarios are deployed and analysed with the presented schemes for comparison. | Xiaoming DONG Chongqing KANG Ning ZHANG Huaguang YAN Junxia MENG Xinsheng NIU Xin TIAN | 2015 | Journal of Modern Power Systems and Clean Energy2015，3，1： | 5 |
| 2 | SIZ1 negatively regulates aluminum resistance by mediating the STOP1–ALMT1 pathway in Arabidopsis显示文摘Sensitive to proton rhizotoxicity 1(STOP1) functions as a crucial regulator of root growth during aluminum(Al) stress. However, how this transcription factor is regulated by Al stress to affect downstream genes expression is not well understood. To explore the underlying mechanisms of the function and regulation of STOP1, we employed a yeast two hybrid screen to identify STOP1-interacting proteins. The SUMO E3 ligase SIZ1, was found to interact with STOP1 and mainly facilitate its SUMO modification at K40 and K212 residues. Simultaneous introduction of K40 R and K212 R substitutions in STOP1 enhances its transactivation activity to upregulate the expression of aluminum-activated malate transporter 1(ALMT1)via increasing the association with mediator 16(MED16) transcriptional co-activator. Loss of function of SIZ1 causes highly increased expression of ALMT1, thus enhancing Al-induced malate exudation and Al tolerance. Also, we found that the protein level of SIZ1 is reduced in response to Al stress. Genetic evidence demonstrates that STOP1/ALMT1 is epistatic to SIZ1 in regulating root growth response to Al stress. This study suggests a mechanism about how the SIZ1–STOP1–ALMT1 signaling module is involved in root growth response to Al stress. | Jiameng Xu Jiayong Zhu Jiajia Liu Junxia Wang Zhaojun Ding Huiyu Tian | 2021 | Journal of Integrative Plant Biology2021，63，6： | 2 |
| 3 | Exploring the nonlinear piezoresistive effect of 4HSiC and developing MEMS pressure sensors for extreme environments显示文摘Microelectromechanical system(MEMS)pressure sensors based on silicon are widely used and offer the benefits of miniaturization and high precision.However,they cannot easily withstand high temperatures exceeding 150 ℃ because of intrinsic material limits.Herein,we proposed and executed a systematic and full-process study of Sic-based MEMS pressure sensors that operate stably from-50 to 300 ℃.First,to explore the nonlinear piezoresistive effect,the temperature coefficient of resistance(TCR)values of 4H-SiC piezoresistors were obtained from-50 to 500 ℃.A conductivity variation model based on scattering theory was established to reveal the nonlinear variation mechanism.Then,a piezoresistive pressure sensor based on 4H-SiC was designed and fabricated.The sensor shows good output sensitivity(3.38 mVN/MPa),accuracy(0.56%FS)and low temperature coefficient of sensitivity(TCS)(-0.067%FS/℃)in the range of-50 to 300 ℃.In addition,the survivability of the sensor chip in extreme environments was demonstrated by its anti-corrosion capability in H_(2)SO_(4) and NaOH solutions and its radiation tolerance under 5 W X-rays.Accordingly,the sensor developed in this work has high potential to measure pressure in high-temperature and extreme environments such as are faced in geothermal energy extraction,deep well dilling,aeroengines and gas turbines. | Chen Wu Xudong Fang Qiang Kang Ziyan Fang Junxia Wu Hongtao He Dong Zhang Libo Zha Bian Tian Ryutaro Maedai Zhuangde Jjang | 2023 | Microsystems & Nanoengineering2023，9，2： | 1 |
| 4 | Study on the mechanical properties and service life of H13 mandrels显示文摘The microstructures and mechanical properties of H13 mandrels made by Baosteel and foreign companies were investigated in this study.Based on the comparison research,the processes were optimized,such as steelmaking,heat treatment and multiple forging processes.The quality of Baosteel mandrels was greatly improved by increasing the homogenizing of an annealing temperature and refining processes.The results of the pilot trial showed that the average number of piercing steel tubes for Baosteel mandrels was over 3000,which reached the level of imported mandrels. | TIAN Yuxin LU Minghe CAI Haman ZHANG Jinghai GUO Junxia | 2011 | Baosteel Technical Research2011，5，2： | 0 |
| 5 | Periostin promotes EMT via inhibition of RIN1-mediated endocytosis of EGFR in gliomas显示文摘Purpose:Approximately 1/3 of brain tumors are gliomas.Previous glioma-related studies have reported increased expression of periostin(POSTN)in these cancerous tissues,but the role and mechanism of POSTN in glioma development remain unclear.Methods:Nanoscale liquid chromatography coupled with tandem mass spectrometry(nano LC-MS/MS)and RNA sequencing were used to identify diferential protein and mRNA expression in clinical glioma samples.Quantitative real-time PCR(qRT-PCR)was used to measure the expression of POSTN in tissues and cells.The efects of POSTN on glioma cell migration and invasion were examined using wound healing,Transwell,and three-dimensional spheroid assays in vitro and a nude mouse xenograft model in vivo.The efects of POSTN on the stability,endocytosis,and degradation of EGFR were examined by immunoblotting and immunofuorescence staining.Truncation mutation analysis was performed to investigate direct interactions between POSTN and EGFR.Immunohistochemical staining was carried out to confrm the clinical signifcance of POSTN.Results:Overexpression of POSTN induced epithelial-to-mesenchymal transition(EMT)in glioma cells in vivo and in vitro.Mechanistically,POSTN downregulation inhibited EGFR signaling by promoting EGFR endocytosis and degradation.In addition,POSTN was found to bind to EGFR and RIN1,inhibiting EGFR endocytosis and degradation and thus activating the PI3K-Akt signaling pathway.Conclusion:These fndings indicate the mechanism by which the POSTN/EGFR/RIN1 axis inhibits EGFR endocytosis and degradation,resulting in glioma cell EMT through the PI3K-AKT signaling pathway.Targeting POSTN/EGFR/RIN1 interactions may guarantee benefcial outcomes of glioma treatment. | Fengqi Zhou Tianfu Yu Fan Xiao Binbin Wang Wei Tian Ran Xu Xiaochun Zhao Ailiang Zeng Ning Liu Yingyi Wang Yongping You Junxia Zhang | 2022 | Holistic Integrative Oncology2022，1，1： | 0 |
| 6 | Selective harvesting at rational intervals promotes carbon sequestration in temperate coniferous and broad-leaved mixed forests in China显示文摘Evidence-based selective cutting at prescribed intervals as part of good forest management can enhance the carbon sequestration capacity of the forest.The effect of forest management on carbon sequestration has,however,not been quantified.Thus,carbon content of various organs was measured for 323 tree species,247 shrub species,and233 herb species in seven temperate coniferous and broadleaved mixed forests that were subjected to selective cutting with restoration durations of 100,55,45,36,25,14,and6 years to explore dynamic changes in carbon storage.The results showed that biomass carbon allocation in different organs followed a pattern:trunk>root>branch>leaf for all forests.With longer restoration durations,more carbon accumulated in different organs and in soils.Interestingly,when the restoration duration exceeded 50 years,carbon storage in ecosystem was larger than that in primary forests with 100-year cutting intervals,suggesting that a reasonable selective cutting interval can increase forest carbon sequestration.Mean diameter at breast height(DBH)and forest carbon storage were significantly positively correlated,and carbon storage of selectively cut forests exceeded that of primary forests when the stand mean DBH exceeded 15.66 cm.Therefore,mean DBH of forests can be an indicator for combining sustainable forest management and forest carbon sequestration.Additionally,the classic coefficients of 0.45 and 0.50 used to estimate carbon sequestration underestimated values by 2.65%and overestimated by 8.16%,respectively,in comparison with the measured carbon content from different plant organs. | Jihua Hou Junxia Tian Li Xu Zihao Zhang Zhi Chen Nianpeng He | 2021 | Journal of Forestry Research2021，32，3： | 0 |
| 7 | Manufacturing of T300 cobalt-free maraging steel and its tensile property显示文摘The 18Ni 300 grade cobalt-free maraging steel T300 was successfully manufactured on an industrial scale by application of vacuum induction melting (VIM) and vacuum arc remelting (VAR) process at Baosteel.With the content of O and N less than 15 ppm and 10 ppm respectively (1 ppm=10-6),the T300 steel produced by Baosteel obtained a high degree of purity and a good combination of ultra-high strength and fracture toughness.The effects of solution temperature and ageing temperature on tensile property of solution-treated and aged T300 steel were investigated.The results show that the solution temperature slightly influences the strength of the solution-treated steel,indicating that the solution strengthening rather than the grain boundary strengthening is more important to the solution-treated steel.For the solution-treated T300,the elongation and reduction of area don't change much with a rising solution temperature,and remain above 17% and 70% respectively at the solution temperature ranging from 800℃ to 1200℃.For the aged T300 steel,the strength and elongation are reduced with an increasing solution temperature,and the solution temperature has a greater effect on the reduction of area than that on the elongation.The reduction of area of the aged steel reaches a high peak when the solution temperature reaches 920℃.The experimental data indicates that precipitation strengthening makes a contribution of 1100 MPa to the tensile strength of the aged steel.The ageing temperature exerts a greater effect on the strength than on the elongation and reduction of area.The steel achieves a better combination of strength and toughness at the peak ageing temperature of 500℃. | GUO Junxia ZHANG Jinghai TIAN Yuxin | 2011 | Baosteel Technical Research2011，5，4： | 0 |
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