检索结果-南通市图书馆

Designing salt stress-resilient crops:Current progress and future challenges

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Plant Biology 2024年第3期66卷 303-329页

作者： xiaoyan liang Jianfang Li Yongqing Yang Caifu Jiang Yan Guo State Key Laboratory of Plant Environmental Resilience College of Biological SciencesChina Agricultural UniversityBeijing 100094China State Key Laboratory of Nutrient Use and Management College of Resources and Environmental SciencesChina Agricultural UniversityBeijing 100194China Center for Crop Functional Genomics and Molecular Breeding China Agricultural UniversityBeijing 100094China Frontiers Science Center for Molecular Design Breeding China Agricultural UniversityBeijing 100193China

Excess soil salinity affects large regions of land and is a major hindrance to crop production ***,understanding the molecular mechanisms of plant salt tolerance has scientific importance and practical *** recent decades,studies have characterized hundreds of genes associated with plant responses to salt stress in different plant *** studies have substantially advanced our molecular and genetic understanding of salt tolerance in plants and have introduced an era of molecular design breeding of salt-tolerant *** review summarizes our current knowledge of plant salt tolerance,emphasizing advances in elucidating the molecular mechanisms of osmotic stress tolerance,salt-ion transport and compartmentalization,oxidative stress tolerance,alkaline stress tolerance,and the trade-off between growth and salt *** also examine recent advances in understanding natural variation in the salt tolerance of crops and discuss possible strategies and challenges for designing salt stress-resilient *** focus on the model plant Arabidopsis(Arabidopsis thaliana)and the four most-studied crops:rice(Oryza sativa),wheat(Triticum aestivum),maize(Zea mays),and soybean(Glycine max).

关键词： molecular design breeding salt stress-resilient crop salt tolerance

Wavefront evolution of the signal beam in Ti:sapphire chirped pulse amplifier

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2019年第1期28卷 385-389页

作者： Zhen Guo lianghong Yu Wenqi Li Zebiao Gan xiaoyan liang State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences University of Chinese Academy of Sciences School of Physical Science and Technology Shanghai Technology University

We studied the evolution of wavefront aberration(WFA) of a signal beam during amplification in a Ti:sapphire chirped pulse amplification(CPA) system. The results verified that the WFA of the amplified laser beam has little relation with the change of the pump beam energies. Transverse parasitic lasing that might occur in CPA hardly affects the wavefront of the signal beam. Thermal effects were also considered in this study, and the results show that the thermal effect cumulated in multiple amplification processes also has no obvious influence on the wavefront of the signal beam for a single-shot frequency. The results presented in this paper confirmed experimentally that the amplification in a Ti:sapphire CPA system has little impact on the WFA of the signal beam and it is very helpful for wavefront correction of single-shot PW and multi-PW laser systems based on Ti:sapphire.

关键词： wavefront aberration Ti:sapphire chirped pulse amplification wavefront correction

A Research on Management of High-level Talents in Colleges and Universities of ZUNYI Normal University

在线全文

学校读者我要写书评

暂无评论

Education and Teaching Research

Education and Teaching Research 2024年第4期2卷 9-14页

作者： liang xiaoyan University of the Visayas 6000Philippines

High-level talent is an important part of the university talent strategy,how to effectively manage high-level talent is the most important issue at *** located in the western mountainous area“ZUNYI Normal College”such as colleges and universities,funding sources,poor research conditions and other disadvantages led to the poor attractiveness of the university’s talent,the phenomenon of serious brain drain,high-level talent management systematic research has a greater theoretical significance and important practical *** paper combines ZUNYI Normal College’s own schooling characteristics,summarizes the ZUNYI Normal College high-level talent management problems exist in the main social factors,school factors,the talent’s own factors and other factors in three major aspects,respectively,from the government,schools and talents from the individual three perspectives to propose management strategies and countermeasures.

关键词： ZUNYI Normal University High-level Talents Brain Drain Management Mechanisms

肾病综合征病人血清lncRNA ANRIL和BDNF水平变化与血栓栓塞的相关性分析

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

安徽医药 2025年第1期29卷 141-146页

作者：顾玉梁晓艳马胜辉佟娜阎泽君承德市中心医院检验科河北承德067000 承德护理职业学院基础部河北承德067000

目的探究肾病综合征(NS)病人血清长链非编码RNA(lncRNA)细胞周期激酶抑制因子4基因座中反义非编码RNA(ANRIL)和脑源性神经营养因子(BDNF)水平变化与血栓栓塞(TE)的相关性。方法选取2019年3月至2021年12月在承德市中心医院住院治疗的220... 详细信息

目的探究肾病综合征(NS)病人血清长链非编码RNA(lncRNA)细胞周期激酶抑制因子4基因座中反义非编码RNA(ANRIL)和脑源性神经营养因子(BDNF)水平变化与血栓栓塞(TE)的相关性。方法选取2019年3月至2021年12月在承德市中心医院住院治疗的220例NS病人为研究对象,根据随访结果将其分为NS组118例和TE组102例,另外选取同期体检健康者100例为对照组。采用实时荧光定量PCR(qRT-PCR)测定研究对象血清lncRNA ANRIL水平;采用酶联免疫吸附测定(ELISA)检测研究对象血清BDNF水平;使用全自动生化分析仪检测相关生化指标;采用Pearson相关性分析血清lncRNA ANRIL、BDNF水平与生化指标相关性;采用多因素logistic回归分析NS病人发生TE的影响因素;采用受试者操作特征曲线(ROC曲线)分析血清lncRNA ANRIL、BDNF在预测NS病人发生TE中的价值。结果与对照组相比较,NS组、TE组血清lncRNA ANRIL水平显著升高(2.54±0.43比5.82±1.34、8.35±2.17),BDNF水平显著降低[(32.77±8.25)μg/L比(24.49±4.58)μg/L、(18.63±3.62)μg/L](P<0.05);与NS组相比较,TE组血清lncRNA ANRIL水平显著升高,BDNF水平显著降低(P<0.05);对照组、NS组、TE组三组的尿酸、血肌酐、乳酸脱氢酶、血尿素氮、尿蛋白水平呈逐渐升高趋势,血清白蛋白、血红蛋白水平呈逐渐降低趋势(P<0.05)。Pearson相关性分析显示,NS合并TE病人血清lncRNA ANRIL水平与尿酸、血肌酐、乳酸脱氢酶、血尿素氮、尿蛋白水平呈正相关,与血清白蛋白、血红蛋白水平呈负相关(P<0.05);NS合并TE病人血清BDNF水平与尿酸、血肌酐、乳酸脱氢酶、血尿素氮、尿蛋白水平呈负相关,与血清白蛋白、血红蛋白水平呈正相关(P<0.05)。多因素logistic回归分析显示,lncRNA ANRIL、尿蛋白和BDNF是NS病人发生TE的影响因素(P<0.05);ROC曲线结果显示,血清lncRNA ANRIL、BDNF预测NS病人发生TE的曲线下面积(AUC)分别为0.84、0.85,两者联合预测的AUC为0.92,高于lncRNA ANRIL、BDNF单独检测,特异度为83.05%,灵敏度为88.24%。结论NS伴TE病人中血清lncRNA ANRIL水平升高,BDNF水平降低,二者对NS病人发生TE具有一定的预测价值。

关键词：肾病综合征非编码RNA ANRIL 脑源性神经营养因子血栓栓塞预测价值

Cytokinin signaling promotes salt tolerance by modulating shoot chloride exclusion in maize

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Molecular Plant 2023年第6期16卷 1031-1047页

作者： Pan Yin xiaoyan liang Hanshu Zhao Zhipeng Xu Limei Chen Xiaohong Yang Feng Qin Jingbo Zhang Caifu Jiang State Key Laboratory of Plant Environmental Resilience College of Biological SciencesChina Agricultural UniversityBejing 100094China State Key Laboratory of Nutrient Use and Management College of Resources and Environmental SciencesNational Academy of Agriculture Green DevelopmentChinaAgriculturalUniversityBeijing100193China Center for Crop Functional Genomics and Molecular Breeding China Agricultural UniversityBejing 100094China Laboratory of Agrobiotechnology and National Maize Improvement Center of China Department of Plant Genetics and BreedingChina Agricultural UniversityBeijing100193China Outstanding Discipline Program for the Universities in Bejing Beijing 100094China

Excessive accumulation of chloride(Cl^(-))in the aboveground tissues under saline conditions is harmful to *** the exclusion of Cl^(-) from shoots promotes salt tolerance in various ***,the underlying molecular mechanisms remain largely *** this study,we demonstrated that a type A response regulator(ZmRR1)modulates Cl^(-) exclusion from shoots and underlies natural variation of salt tolerance in ***1 negatively regulates cytokinin signaling and salt tolerance,likely by interacting with and inhibiting His phosphotransfer(HP)proteins that are key mediators of cytokinin signaling.A naturally occurring non-synonymous SNP variant enhances the interaction between ZmRR1 and ZmHP2,conferring maize plants with a salt-hypersensitive *** found that ZmRR1 undergoes degradation under saline conditions,leading to the release of ZmHP2 from ZmRR1 inhibition,and subsequently ZmHP2-mediated signaling improves salt tolerance primarily by promoting Cl^(-) exclusion from ***,we showed that ZmMATE29 is transcriptionally upregulated by ZmHP2-mediated signaling under highly saline conditions and encodes a tonoplast-located Cl^(-) transporter that promotes Cl^(-) exclusion from shoots by compartmentalizing Cl^(-) into the vacuoles of root cortex ***,our study provides an important mechanistic understanding of the cytokinin signaling-mediated promotion of Cl^(-) exclusion from shoots and salt tolerance and suggests that genetic modification to promote Cl^(-) exclusion from shoots is a promising route for developing salt-tolerant maize.

关键词： cytokinin signaling salt tolerance high-Cl^(-)tolerance Cl^(-)transporter maize

Study of enhancement-mode GaN pFET with H plasma treated gate recess

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 Semiconductors 2023年第11期44卷 63-68页

作者： Xiaotian Gao Guohao Yu Jiaan Zhou Zheming Wang Yu Li Jijun Zhang xiaoyan liang Zhongming Zeng Baoshun Zhang School of Materials Science and Engineering Shanghai UniversityShanghai 200444China Nanofabrication Facility Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026China

This letter showcases the successful fabrication of an enhancement-mode(E-mode)buried p-channel GaN fieldeffect-transistor on a standard p-GaN/AlGaN/GaN-on-Si power HEMT *** transistor exhibits a threshold voltage(VTH)of−3.8 V,a maximum ON-state current(ION)of 1.12 mA/mm,and an impressive ION/IOFF ratio of 10^(7).To achieve these remarkable results,an H plasma treatment was strategically applied to the gated p-GaN region,where a relatively thick GaN layer(i.e.,70 nm)was kept intact without aggressive gate *** this treatment,the top portion of the GaN layer was converted to be hole-free,leaving only the bottom portion p-type and spatially separated from the etched GaN surface and gateoxide/GaN *** approach allows for E-mode operation while retaining high-quality p-channel characteristics.

关键词： GaN pFET E-mode H plasma treatment ION/IOFF ratio

High-repetition-rate and high-power picosecond regenerative amplifier based on a single bulk Nd:GdVO4 crystal

在线全文

学校读者我要写书评

暂无评论

High Power Laser Science and Engineering 2019年第2期7卷 104-110页

作者： Jie Guo Wei Wang Hua Lin xiaoyan liang State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

We report on a high-repetition-rate,high-power continuously pumped Nd:GdVO4 regenerative *** simulations successfully pinpoint the optimum working point free of bifurcation instability with simultaneous efficient energy *** a repetition rate of 100 kHz,a maximum output power of 23 W was obtained with a pulse duration of 27 ps,corresponding to a pulse energy of 230 μ*** system displayed an outstanding stability with a root mean square power noise as low as 0.3%.The geometry of the optical resonator and the pumping scheme enhanced output power in the TEM00 mode with a single bulk ***,nearly diffraction-limited beam quality was produced with M2≈1.2 at full pump power.

关键词： diode-pumped solid state laser high repetition rate regenerative amplifier picosecond laser

CW Self-Frequency-Doubling Laser Operating on Nd:MgO:LiNbO_(3) High-Gain Polarization

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 1993年第4期10卷 231-234页

作者： LI Ruining WANG Junmin liang xiaoyan XIE Changde PENG Kunchi XU Guanfeng Institute of Optoelec tronic Researches Shanxi UniversityTaiyuan 030006 Southwestern Institute of Technical Physics Chengdu 610041

The CW second-harmonic wave of high-gain polarization atλ=l.085μm was demonstrated with Nd:MgO:LiNbO_(3) self-frequency-doubling laser cavity inserted with a quarter wave-plate of the fundamental *** pump power threshold for the second-harmonic generation as low as 9.9mW was *** maximum second-harmonic output was 11.4 m W,the conversion efficiency for the total second-harmonic output was 11.3%per Watt.

关键词： Nd: polarization pump

High power, microjoule-level diffraction-limited picosecond oscillator based on Nd:GdVO_4 bulk crystal

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Photonics Research 2019年第4期7卷 452-456页

作者： JIE GUO WEI WANG HUA LIN xiaoyan liang State Key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences

1.2 μJ pulses with average power of 9 W were directly generated from a passively mode-locked picosecond oscillator based on a Nd:GdVO4 bulk crystal. Short cavity operation in continuous wave and mode-locking regimes was conducted first to confirm the resonator performance and proper alignment. With a carefully calibrated q-preserving multi-pass cell inserted into the laser cavity, the cavity length of the original short cavity was extended while the mode-matching condition was maintained fairly well. Compared with the short cavity, nearly fivefold energy enhancement was achieved while the diffraction-limited beam quality was undisturbed. To the best of our knowledge, this is the highest output power ever produced from a mode-locked oscillator based on a single bulk crystal at a repetition rate below 10 MHz without cavity dumping.

关键词： pulses with average power directly generated bulk crystal at a repetition