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Contribution of China's carbon budget on global radiative forcing

Journal of Geographical Sciences 2025年第2期35卷 233-251页

作者： li Nan CUI Yaoping liU Xiaoyan SHI Zhifang li mengdi Michael E MEADOWS Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions (Henan University) Ministry of Education College of Environment and Planning Henan University Dabieshan National Observation and Research Field Station of Forest Ecosystem at Henan Department of Environmental and Geographic Sciences University of Cape Town

China is the world's largest carbon dioxide（CO2） emitter and a major trading country. Both anthropogenic and natural factors play a critical role in its carbon budget. However,previous studies mostly focus on evaluating anthropogenic emissions or the natural carbon cycle separately, and few included trade-related（import and export） CO2emissions and its contribution on global warming. Using the CarbonTracker CT2019 assimilation dataset and China trade emissions from the Global Carbon Project, we found that the change trend of global CO2flux had obvious spatial heterogeneity, which is mainly affected by anthropogenic CO2flux. From 2000 to 2018, carbon emissions from fossil fuels in the world and in China all showed an obvious increasing trend, but the magnitude of the increase tended to slow *** 2018, the radiative forcing（RF） caused by China's import and export trade was-0.0038 W m-2, and the RF caused by natural carbon budget was-0.0027 W m-2, offsetting 1.54% and 1.13% of the RF caused by fossil fuels that year, respectively. From 2000 to 2018, the contribution of China's carbon emission from fossil fuels to global RF was 11.32%. Considering China's import and export trade, the contribution of anthropogenic CO2emission to global RF decreased to 9.50%. Furthermore, taking into account the offset of carbon sink from China's terrestrial ecosystems, the net contribution of China to global RF decreased to 7.63%. This study demonstrates that China's terrestrial ecosystem and import and export trade are all mitigating China's impact on global anthropogenic warming, and also confirms that during the research process on climate change, comprehensively considering the carbon budget from anthropogenic and natural carbon budgets is necessary to systematically understand the impacts of regional or national carbon budgets on global warming.

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Al2O3/AlN/GaN MOS-HEMTs on 6-inch silicon substrate with high transconductance and state-of-the-art fmax×LG

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Science China(Information Sciences) 2025年第03期68卷 407-408页

作者： lingjie QIN Jiejie ZHU Bowen ZHANG Yuxi ZHOU Huantao DUAN Huimei MA mengdi li Simei HUANG Jin RAO Xiaohua MA Yue HAO State Key Discipline Laboratory of Wide Bandgap Semiconductor Technology Xidian University School of Microelectronics Xidian University Hisilicon Technology Co. Ltd.

Owing to their low cost, large wafer size, and easy heterogeneous integration, GaN-based high-electron-mobility transistors(HEMTs) on silicon substrates have been utilized as superior devices in high-frequency applica...

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The characteristics of mRNA m^(6)A methylomes in allopolyploid Brassica napus and its diploid progenitors

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Horticulture Research 2023年第1期10卷 69-81页

作者： Zeyu li mengdi li Xiaoming Wu Jianbo Wang State Key Laboratory of Hybrid Rice College of Life SciencesWuhan UniversityWuhan 430072HubeiChina Key Laboratory of Resource Biology and Biotechnology in Western China Ministry of EducationCollege of Life SciencesNorthwest UniversityXi’an 710069China Key Laboratory of Biology and Genetic Improvement of Oil Crops Ministry of AgricultureOil Crops Research Institute of CAASWuhan 430062China

Genome duplication events,comprising whole-genome duplication and single-gene duplication,produce a complex genomic context leading to multiple levels of genetic ***,the characteristics of m^(6)A modification,the most widespread internal eukaryotic mRNA modification,in polyploid species are still poorly *** study revealed the characteristics of m^(6)A methylomes within the early formation and following the evolution of allopolyploid Brassica *** found a complex relationship between m^(6)A modification abundance and gene expression level depending on the degree of enrichment or presence/absence of m^(6)A ***,the m^(6)A genes had lower gene expression levels than the non-m^(6)A *** may change the expression divergence of duplicated gene pairs with identical m^(6)A patterns and diverged m^(6)A *** with duplicated genes,singletons with a higher evolutionary rate exhibited higher m^(6)A *** kinds of duplicated genes exhibited distinct distributions of m^(6)A modifications in transcripts and gene expression *** particular,tandem duplication-derived genes showed unique m^(6)A modification enrichment around the transcript start *** histone modifications(H3K27ac and H3K4me3)but not DNA methylation were enriched around genes of m^(6)A *** findings provide a new understanding of the features of m 6A modification and gene expression regulation in allopolyploid plants with sophisticated genomic architecture.

关键词： polyp characteristics progenitor

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Barley:a potential cereal for producing healthy and functional foods

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Food Quality and Safety 2022年第2期6卷 142-154页

作者： La Geng mengdi li Guoping Zhan lingzhen Ye Agronomy Department Zhejiang UniversityHangzhouChina Zhejiang University Zhongyuan Institute ZhengzhouChina

Barley is the fourth largest cereal crop in the *** is mainly used for feeding,beer production and *** is receiving more attention from both agricultural and food scientists because of its special chemical composition and health *** comparison with other cereal crops,including wheat,rice and maize,barley grains are rich in dietary fiber(such asβ-glucan)and tocols,which are beneficial to human *** is well proved that diets rich in those chemicals can provide protection against hypertension,cardiovascular disease,and *** has been widely recognized to have great potential as a healthy or functional *** this review,we present information about studies on the phys-ical structure of the barley grain and the distribution of its main chemical components,nutrient and functional composition of barley grain and their health benefits,and the approaches of improving and utilizing the nutrient and functional chemicals in barley *** the development of processing technologies,functional components in barley grains,especiallyβ-glucan,can be efficiently extracted and ***,nutrient and functional components in barley grains can be efficiently improved by precise breeding and agronomic *** review high-lights the great potential of barley used as healthy and functional foods,and may be instructive for better utilization of barley in food processing.

关键词： Barley gr ain food nutrient components health benefits

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History dynamics of unified empire in China(770 BC to 476 BC)

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CAAI Transactions on Intelligence Technology 2023年第3期8卷 880-892页

作者： Peng Lu mengdi li Jiawen Lu Zhuo Zhang Department of Sociology Central South UniversityChangshaChina School of Automation Central South UniversityChangshaChina Social System Center Beijing Institute for General Artificial IntelligenceBeijingChina Depart of Economics Graduate School of Arts&SciencesColumbia UniversityNew YorkNew YorkUSA

The laws and regulations in human history can be revealed by computational *** 221 before Christ(BC)to 1912 Anno Domini(AD),the unification pattern has dominated the main part of Chinese history for 2132 *** the emergence of the first unified empire,the Qin Empire in 221 BC,there existed the Eastern Zhou dynasty(770 BC to 221 BC).This long dynasty has two stages,and here we focus on the first *** Spring-Autumn stage was from 770 BC(with 148 states)to 476 BC(with 32 states).The whole country(China)is modelled as a multi‐agent system,which contains multiple local *** behave autonomously under certain action rules(wars and conflicts),which forms the main reason for the annexations and disappearance of most *** factors(power,loyalty,bellicosity and alliance)have been considered in our model settings,and simulation outcomes will be monitored and ***,an optimal solution is obtained,which well unveils the internal mechanism and statistical features of real big ***,counterfactuals are used to explore the non‐linear effects of the key factors,which deepens the authors’understanding of civilisa-tion evolutions in human history.

关键词： civilization dynamics empire dynamics the great unity

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Vanadyl Sulfate Based Hole-Transporting Layer Enables Efficient Organic Solar Cells

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Chinese Journal of Chemistry 2024年第14期42卷 1644-1650页

作者： mengdi li Yuqing Sun Yang Cheng Chaowei Zhao Jicai Zhang Weiwei li Research Center for Optoelectronic Materials and Devices School of Physical Science and TechnologyGuangxi UniversityNanningGuangxi530004 China Institute of Applied Chemistry Jiangxi Academy of SciencesNanchangJiangxi330096 China Beijing Advanced Innovation Center for Soft Matter Science and Engineering&State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing100029 China

It remains an urgent task to develop alternative hole-transporting layer(HTL)materials beyond commonly used PEDOT:PSS to increase the shelf-life of organic solar cells(OSCs).Inorganic metal oxide type materials,such as NiO_(x),CoO_(x)and VO_(x),with suitable work functions have attracted numerous research attention *** this work,more abundant and easily accessible oxygenated salt,vanadyl sulfate(VOSO_(4))has been demonstrated to be excellent choice as HTL for *** VOSO_(4)-based HTL can be readily processed by spin-coating from the precursor solution with subsequent thermal annealing and UVO *** a consequence,a high power conversion efficiency(PCE)of 18.72%can be achieved for PM8:L8-BO based OSCs with the VOSO_(4)-based *** transmittance,smooth film surface,suitable energy level and high conductivity were revealed to contribute to the high OSC *** importantly,compared to device with PEDOT:PSS,VOSO_(4)-based OSCs exhibit improved stability when stored in the N_(2)filled glove *** being stored for 600 h,VOSO_(4)-based device can retain 89%of its initial ***,VOSO_(4)can be used as general HTL in PM6:BTP-BO-4Cl and PM6:IT-4F based OSCs,yielding high PCEs of 17.87%and 13.85%,respectively.

关键词： Organic solar cells Semiconductors Hole-transporting layers Vanadyl sulfate Power output Efficiency Vanadium Interfacial modification

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富马酸季戊四醇酯基镧稀土化合物的制备及其在PVC中热稳定性能和抗菌性能的研究

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中国塑料 2025年第1期39卷 6-12页

作者：陈明光李梦迪郁辰曹鸿璋于晓丽柳召刚罗果萍内蒙古科技大学稀土产业学院内蒙古包头014030 白云鄂博稀土资源研究与综合利用全国重点实验室内蒙古包头014030 山东理工大学化学化工学院山东淄博255000

本文以富马酸、季戊四醇和醋酸镧为原料,合成了富马酸季戊四醇镧(FGPE-La)稀土化合物,对其结构和组成进行了表征,并研究了FGPE-La在聚氯乙烯(PVC)中的热稳定性能和抗菌性能。结果表明,FGPE-La是兼具热稳定性能和抗菌性能的多功能PVC助剂... 详细信息

本文以富马酸、季戊四醇和醋酸镧为原料,合成了富马酸季戊四醇镧(FGPE-La)稀土化合物,对其结构和组成进行了表征,并研究了FGPE-La在聚氯乙烯(PVC)中的热稳定性能和抗菌性能。结果表明,FGPE-La是兼具热稳定性能和抗菌性能的多功能PVC助剂,当FGPE-La∶ZnSt2=3∶1时,具有较好的初期白度和长期热稳定性,且当4份FGPE-La单独使用时,热稳定时间达到了68 min,能够显著提高PVC的长期稳定性;当添加6%(质量分数,下同)FGPELa时,PVC的抑菌率达到99.1%,溶血率也仅为4.6%,具有较好的生物相容性。

关键词：稀土化合物聚氯乙烯热稳定性能抗菌性能

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西南医科大学学报 2025年第1期48卷 87-91,96页

作者：李梦迪娄君鸽张小艳闫媛媛郑州大学附属郑州中心医院超声医学科郑州450000

目的研究肺部超声B线评分联合膈肌功能相关参数对重症机械通气患者撤机成功的预测价值。方法选取2021年4月至2023年8月我院收治的重症机械通气患者115例,针对符合撤机条件患者行肺超声检查计算B线评分,并用T管行自主呼吸实验(spontaneou... 详细信息

目的研究肺部超声B线评分联合膈肌功能相关参数对重症机械通气患者撤机成功的预测价值。方法选取2021年4月至2023年8月我院收治的重症机械通气患者115例,针对符合撤机条件患者行肺超声检查计算B线评分,并用T管行自主呼吸实验(spontaneous breathing trial,SBT),SBT 30 min时通过床旁超声获取右侧膈肌移动度、膈肌厚度,计算呼吸浅快指数、膈肌呼吸浅快指数、膈肌厚度变化率。以患者撤机后48 h呼吸状况分为撤机成功组78例和撤机失败组37例,收集患者临床资料。通过多元logistic回归分析影响撤机成功的相关因素,并通过受试者工作特征曲线(receiver operating characteristic,ROC)评估肺部超声B线评分联合膈肌功能相关参数对撤机的预测价值。结果撤机失败组肺部超声B线评分、膈肌呼吸浅快指数大于撤机成功组,右侧膈肌移动度、膈肌厚度变化率小于撤机成功组(P<0.05)。撤机失败组急性生理学与慢性健康状况评分系统Ⅱ(Acute Physiology and Chronic Health Evaluation,APACHE-Ⅱ)评分、序贯器官衰竭评分(Sequen⁃tial Organ Failure Assessment,SOFA)、呼吸频率、呼吸浅快指数高于撤机成功组,机械通气时间少于撤机成功组(P<0.05)。经logistic回归结果得出,肺部超声B线评分、膈肌呼吸浅快指数、右侧膈肌移动度、膈肌厚度变化率、APACHE-Ⅱ评分、SOFA评分、呼吸频率、呼吸浅快指数是撤机成功重要影响因素(P<0.05)。经ROC曲线分析得出,肺部超声B线评分、膈肌呼吸浅快指数、右侧膈肌移动度、膈肌厚度变化率联合预测曲线下面积(area under curve,AUC)为0.931,优于单一预测结果(P<0.05)。结论肺部超声B线评分联合膈肌功能相关参数对重症机械通气患者撤机成功的预测价值较高。

关键词：肺部超声B线评分膈肌超声重症机械通气撤机

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Protective effects of Dioscin on TNF-α-induced collagen-induced arthritis rat fibroblast-like synoviocytes involves in regulating the LTB4/BLT pathway

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BIOCELL 2021年第4期45卷 1005-1012页

作者： ZHIPING WEI YAJUN liU MEIWEN YANG mengdi li KEXIN li LUXI ZHENG HUIQIONG GUO FENFANG HONG SHULONG YANG Department of Physiology College of MedicineNanchang UniversityNanchang330006China Henan Vocational College of Nursing Anyan455000China Nanchang University Hospital Nanchang330031China Department of Experimental Teaching Center Nanchang UniversityNanchang330031China

Background and Objective:LTB4 has been shown to be involved in rheumatoid arthritis(RA)*** effect of Dioscin(Dio)on the LTB4 pathway of RA have not been reported *** study aimed at further exploring whether Dioscin’s effects on TNF-αinduced collagen-induced arthritis(CIA)rat fibroblast-like synoviocytes(FLS)connected with the LTB4 and its receptor ***&Methods:In this experiment,control group,TNF-αgroup,and different concentrations of Dioscin groups were *** viability was evaluated using MTT *** levels of LTB4 in the samples of above groups were measured using *** mRNA expression levels of LTA4H,BLT1,and BLT2 were detected by quantitative real time PCR,while the expression level of LTA4H proteins were detected using western *** distribution of LTA4H was assessed by immunofluorescence ***:the LTB4 level of TNF-αgroup in sample supernatant was higher than both control group and Dioscin groups with decreased LTB4 levels(p<0.05).Compared with the control group,the expression of LTA4H was significantly increased in TNF-αgroup(p<0.05),whereas LTA4H expressions were significantly decreased in all Dioscin groups when compared to TNF-αgroup(p<0.05).The mRNA expressions of BLT1 and BLT2 were markedly higher in TNF-αgroup than those in control group while Dioscin treatment significantly inhibited the increased expressions of BLT1 and BLT2 induced by TNF-α(p<0.05).Conclusions:These results firstly demonstrate that the protective effect of Dioscin on TNF-αinduced FLS may involve in its reducing LTB4 production by down-regulating LTA4H expression,and may inhibit its downstream pathway by decreasing LTB4 receptors *** findings suggest that dioscin produces a potential therapeutic effects for RA via its influencing LTA4H/LTB4/BLT pathway.

关键词： Rheumatoid arthritis Dioscin Fibroblast-like synoviocytes Leukotriene B4 LTA4 hydrolase Leukotriene B4 receptor

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Identification of the key transcription factors regulating the expression of the genes associated with barley malt quality during malting

Identification of the key transcription factors regulating t...

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第二十届中国作物学会学术年会

作者： li mengdi Zhejiang University

Barley malt is produced through a malting process;it begins with steeping followed by germination and kilning, in which dramatic changes happen for a large number of physiological and biochemical traits in barley seeds. The objectives of this study were to comprehensively investigate the phenotypic changes during malting, and identify the key regulators that modulate the expression of genes associated with malt quality traits. The results showed that there was a significant positive correlation between gibberellic acid(GA) content and the activities of some hydrolytic enzymes, including α-amylases, β-amylases, and limit dextrinase(LD), and a significant negative correlation between GA and β-glucan content. Starch content had little change, but starch granules were pitted severely during malting. Weighted gene coexpression analysis(WGCNA) identified the genes associated with the greatest changes of the examined malt traits during malting. The correlation analysis and protein–protein interaction(PPI) analysis detected several key transcriptional factor(TF) regulating genes associated with malt quality. These genes and TFs regulating malting traits are potentially useful in barley breeding for malt quality improvement.

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