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| 1 | Perspectives on studies on soil carbon stocks and the carbon sequestration potential of China显示文摘Soil carbon stocks and sequestration have been given a lot of attention recently in the study of terrestrial ecosystems and global climate change.This review focuses on the progress made on the estimation of the soil carbon stocks of China,and the characterization of carbon dynamics of croplands with regard to climate change,and addresses issues on the mineralization of soil organic carbon in relation to greenhouse gas emissions.By integrating existing research data,China's total soil organic carbon(SOC) stock is estimated to be 90 Pg and its inorganic carbon(SIC) stock as 60 Pg,with SOC sequestration rates in the range of 20-25 Tg/a for the last two decades.An estimation of the biophysical potential of SOC sequestration has been generally agreed as being 2 Pg over the long term,of which only 1/3 could be attainable using contemporary agricultural technologies in all of China's croplands.Thus,it is critical to enhance SOC sequestration and mitigate climate change to improve agricultural and land use management in China.There have been many instances where SOC accumulation may not induce an increased amount of decomposition under a warming scenario but instead favor improved cropland productivity and ecosystem functioning.Furthermore,unchanged or even decreased net global warming potential(GWP) from croplands with enhanced SOC has been reported by a number of case studies using life cycle analysis.Future studies on soil carbon stocks and the sequestration potential of China are expected to focus on:(1) Carbon stocks and the sequestration capacity of the earths' surface systems at scales ranging from the plot to the watershed and(2) multiple interface processes and the synergies between carbon sequestration and ecosystem productivity and ecosystem functioning at scales from the molecular level to agro-ecosystems.Soil carbon science in China faces new challenges and opportunities to undertake integrated research applicable to many areas. | ZHENG JuFeng CHENG Kun PAN GenXing Pete SMITH LI LianQing ZHANG XuHui ZHENG JinWei HAN XiaoJun DU YanLing | 2011 | Chinese Science Bulletin2011，56，35： | 24 |
| 2 | Extraction of copper from sewage sludge using biodegradable chelant EDDS显示文摘[S,S]-Ethylenediaminedisuccinic acid(EDDS),a biodegradable chelant,was used to separate the heavy metals from the sewage sludge based on chemical extraction technology.Under various conditions,the extraction experiments were carried out for the sewage sludge from Shanghai Taopu Municipal Wastewater Plant,China.The influences ofpH and the concentration of EDDS on the extraction efficiency for copper(Cu)were discussed.The results showed that EDDS had higher extraction efficiency for Cu from the sewage slud... | ZHANG, Lihua ZHU, Zhiliang ZHANG, Ronghua ZHENG, Chengsong ZHANG, Hua QIU, Yanling ZHAO, Jianfu | 2008 | Journal of Environmental Sciences2008，20，8： | 11 |
| 3 | Efficacy and safety of Yinchenwuling powder for hyperlipidemia: a systematic review and Meta-analysis显示文摘OBJECTIVE:To assess the clinical effectiveness and adverse effects of Yinchenwuling powder(YCWLP)in the treatment of hyperlipidemia using Meta-analysis.METHODS:Seven electronic databases were searched for randomized controlled trials designed to evaluate the clinical effectiveness of YCWLP for hyperlipidemia published in any language prior to February 2015.Two reviewers independently identified articles,extracted data,assessed quality,and cross-checked the results.Revman 5.3 was used to analyze the data.RESULTS:Only five randomized controlled trials with poor methodology were included in the analy-sis.The five trials compared YCWLP with conventional lipid-lowering drugs.Meta-analysis indicated that YCWLP was more effective at the levels of total cholesterol and triglycerides,while increasing the level of high-density lipoprotein cholesterol without serious adverse effects.However,it was not more effective than lipid-lowering drugs in reducing low-density lipoprotein cholesterol and improving hemorheology.CONCLUSION:YCWLP appeared to improve lipid levels.However,given the high risk of bias among the trials,we could not conclude that YCWLP was beneficial to patients with hyperlipidemia.More rigorous trials are required to provide stronger evidence for the conclusion. | Yao Haiqiang Zhang Zengliang Wang Ji Zuo Jiacheng Chen Yu Zhu Libing Li Xiaoke Yang Zheng Wang Zisong Sun Ranran Xu Xuanxuan Li Changming Wu Yanling Li Lingru Wang Qi | 2016 | Journal of Traditional Chinese Medicine2016，36，2： | 11 |
| 4 | Single-cell transcriptomic atlas of primate cardiopulmonary aging显示文摘Aging is a major risk factor for many diseases,especially in highly prevalent cardiopulmonary comorbidities and infectious diseases including Coronavirus Disease 2019(COVID-19).Resolving cellular and molecular mechanisms associated with aging in higher mammals is therefore urgently needed.Here,we created young and old non-human primate single-nucleus/cell transcriptomic atlases of lung,heart and artery,the top tissues targeted by SARS-CoV-2.Analysis of cell type-specific aging-associated transcriptional changes revealed increased systemic inflammation and compromised virus defense as a hallmark of cardiopulmonary aging.With age,expression of the SARS-CoV-2 receptor angiotensin-converting enzyme 2(ACE2)was increased in the pulmonary alveolar epithelial barrier,cardiomyocytes,and vascular endothelial cells.We found that interleukin 7(IL7)accumulated in aged cardiopulmonary tissues and induced ACE2 expression in human vascular endothelial cells in an NF-κB-dependent manner.Furthermore,treatment with vitamin C blocked IL7-induced ACE2 expression.Altogether,our findings depict the first transcriptomic atlas of the aged primate cardiopulmonary system and provide vital insights into age-linked susceptibility to SARS-CoV-2,suggesting that geroprotective strategies may reduce COVID-19 severity in the elderly. | Shuai Ma Shuhui Sun Jiaming Li Yanling Fan Jing Qu Liang Sun Si Wang Yiyuan Zhang Shanshan Yang Zunpeng Liu Zeming Wu Sheng Zhang Qiaoran Wang Aihua Zheng Shuguang Duo Yang Yu Juan Carlos Izpisua Belmonte Piu Chan Qi Zhou Moshi Song Weiqi Zhang Guang-Hui Liu | 2021 | Cell Research2021，31，4： | 10 |
| 5 | Plasma membrane proteome analysis of the early effect of alcohol on liver: implications for alcoholic liver disease显示文摘在人,酒精的在消费上能导致严肃的肝疾病。在肝疾病上检验酒精的早效果,老鼠被给足够的乙醇开发肝肝硬化。在纤维变性的发作前的老鼠在这个工作被学习。肝的血浆膜(下午) 被提取由两次蔗糖密度坡度 centrifugation。从对待乙醇的老鼠和控制的下午的 proteome 侧面为相对、绝对的 quantitation (iTRAQ ) 用二维的胶化电气泳动(2-DE ) 和等压的标签被分析技术。乙醇处理改变了 15 不同的肝蛋白质的数量:他们中的 10 个被 2-DE 检测并且 5 由 iTRAQ。角质素 8 被两个方法检测。这些差别的基因本体论分析检测了显示的蛋白质他们的那个大多数涉及象有约束力的活动那样的重要房间函数(包括离子, DNA, ATP 绑定,等等) ,房间结构,或酶活动。在这些之中, annexin A2,角质素 8,和角质素 18 进一步用西方的污点分析被验证, annexin A2 被 immunohistochemistry 验证。我们的结果建议酒精有潜力由在 PM 改变几相关蛋白质的表示层次影响房间结构,粘附和酶活动。就我们的知识而言,这是第一次在肝下午 proteome 上学习酒精的效果,它可能对理解导致白酒的肝疾病的可能的机制有用。 | Lijun Zhang Xiaofang Jia Yanling Feng Xia Peng Zhiyong Zhang Wenjiang Zhou Zhanqing Zhang Fang Ma Xiaohui Liu Ye Zheng Pengyuan Yang Zhenghong Yuan | 2011 | Acta Biochimica et Biophysica Sinica2011，43，1： | 8 |
| 6 | Study on Agricultural Intellectual Property Protection and High-Quality Development of Traditional Chinese Medicine of Ginseng显示文摘Agricultural intellectual property has the functions of carrying forward agricultural cultural heritage,encouraging agricultural scientific and technological innovation,cultivating the brand of agricultural products and so on. The protection and application of agricultural intellectual property rights can enhance the vitality,innovation and competitiveness of agricultural economy,and promote the strategy of high-quality agricultural development and rural revitalization. Ginseng is a traditional medicinal variety with superior characteristics in Northeast China,and it is one of the most famous ' three treasures' in Northeast China. This paper introduces ginseng( Panax ginseng C. A. Mey.) and its medicinal value,analyzes the traditional knowledge,biological genetic resources,new plant varieties,patents,geographical indications,trademarks and other agricultural intellectual property resources of ginseng,studies the traditional Chinese medicine GAP certification and certification of ' Three Agricultural Products' and the construction of the dominant area of agricultural product( Fusong ginseng) with Chinese characteristics,and explores the rural revitalization strategy and traditional Chinese medicine development strategy,ginseng agricultural intellectual property protection and high quality development strategy. | Yuanpeng SUN Zhe WU Xueqin SIMA Yanling SUN Zheng CHENG | 2019 | Asian Agricultural Research2019，11，6： | 7 |
| 7 | Intellectual Property Protection and High Quality Development of Radix Glycyrrhizae for Treatment of COVID-19显示文摘Radix Glycyrrhizae is the dominant native medicinal material variety in the north and northwestern medicinal materials producing areas.It is a main Chinese medicine of effective TCM drugs and formulas for the treatment of new coronavirus disease(COVID-19).This paper introduces the medicinal value of Radix Glycyrrhizae,involving the labeling,cultural heritage,and creative intellectual property rights of the Chinese medicinal materials,analyzes the poverty-stricken areas that are ecologically suitable for Radix Glycyrrhizae cultivation,and the superior counties and production bases of the Chinese medicinal materials.Besides,mainly from the aspects of perfect intellectual property rights,the establishment of authentic medicinal material production bases,and the construction of quality control systems,etc.,it discusses the rural revitalization strategy and the development strategy of traditional Chinese medicine(TCM),agricultural intellectual property protection and high-quality development strategy of Radix Glycyrrhizae. | Yuanpeng SUN Yanling SUN Zheng CHENG Yusi LIU Zhe WU | 2020 | Asian Agricultural Research2020，12，5： | 6 |
| 8 | Proteome analysis of hepatic non-parenchymal cells of immune liver fibrosis rats显示文摘Elucidation of the mechanisms of liver fibrogenesis is important to treat liver fibrosis.In this study,we established rat models of liver fibrosis with stages from 0–1,2,and 3–4 to 4 at 2,4,6,and 8 weeks,respectively,by injection of pig serum.Liver fibrogenesis was detected by Masson’s trichrome staining.Rat non-parenchymal cells(NPCs)were enriched 4-fold by Percoll density gradient centrifugation.Protein extracts from NPCs were prepared at 4 and 8 weeks,separated by two-dimensional electrophoresis,and then stained with Coomassie Blue G-250.At 4 weeks,we identified 18 non-redundant differentially expressed proteins of which protein disulfide-isomerase associated protein 3(PDIA3)and NDUV showed consistent expression at protein and mRNA levels from 4 to 8 weeks.PDIA3 was found to be down-regulated by Western blotting in the rat model and immunohistochemically in human liver.Our results revealed important aspects of the pathogenesis/progression of liver fibrosis and demonstrated important changes in protein expression levels of NPCs at various stages of liver fibrosis. | ZHAO QianQian FENG YanLing JIA XiaoFang YIN Lin ZHENG Ye OUYANG DongSheng ZHOU HongHao ZHANG LiJun | 2014 | Science China(Life Sciences)2014，57，3： | 5 |
| 9 | Thrombolysis with alteplase 3-4.5 hours after acute ischaemic stroke:the first multicentre,phase III trial in China显示文摘background and purpose Data on the efficacy and safety of alteplase for acute ischaemic stroke(AIS)administered 3-4.5 hours after the onset of stroke symptoms in Chinese patients is limited.We sought to determine whether AIS patients would benefit from thrombolysis with alteplase between 3 and 4.5 hours after the onset of stroke symptoms in a prospective,multicentre,single-arm trial in China.Materials and methods Eligible AIS patients were given 0.9 mg/kg alteplase intravenously.The primary efficacy endpoint was a favourable outcome at 3 months,defined as a score of 0 or 1 on the modified Rankin Scale.Thresholds for the primary efficacy endpoint were determined to be 40%based on the literature review.The primary safety endpoint was symptomatic intracranial haemorrhage(sICH)according to the European Cooperative Acute Stroke Study III(ECASS III)trial definition.Post hoc analysis between this study and the ECASS III trial were compared using the propensity score matching(PSM)method.results A total of 120 eligible AIS patients from 11 sites in China received thrombolysis therapy in this study.The median time from onset of symptoms to needle was 3 hours 54 min.The percentage of patients with a favourable outcome was 63.3%(95%CI 54.4 to 71.4),significantly higher than the predefined threshold(p<0.0001).Three patients(2.5%,95%CI 0.5 to 7.1)had sICH,including two fatal sICH.Six patients died within 3 months after treatment.The post hoc PSM analysis showed a numerically higher rate of the primary efficacy endpoint in this study(63.3%)than the matched placebo arm(56.7%)in the ECASS III trial.Conclusions Intravenous alteplase with a standard dose administered between 3 and 4.5 hours after onset of symptoms is effective and safe for Chinese AIS patients. | Huaguang Zheng Yi Yang Huisheng Chen Chuanling Li Yangkun Chen Fu-Dong Shi Li Yang Xiaoping Cui Zuneng Lu Yanling Liang Songbiao Cui Anding Xu Yiqing Wu Yaqing Sun Yongjun Wang | 2020 | Stroke & Vascular Neurology2020，5，3： | 4 |
| 10 | Isolation and Characterization of Acid-soluble Collagen and Pepsin-soluble Collagen from the Skin of Hybrid Sturgeon显示文摘By using the wastes fish skin of sturgeon processed as a raw material, a macromolecule biomaterial of collagen was extracted. Acid-soluble collagen(ASC) and pepsin-soluble collagen(PSC) were successfully isolated from the skin of hybrid sturgeon with two extraction methods. The yields of ASC and PSC based on the wet weight of skin were 5.73 ± 0.11% and 10.26 ± 0.39%, respectively. The denaturation and melting points of ASC(26.83 ℃ and 110.49 ℃) and PSC(26.54 ℃ and 102.99 ℃) were assessed by Circular dichroism(CD) and Differential scanning calorimetry(DSC). ASC and PSC appeared to be dense sheet-like film linked by random-coiled filaments under scanning electron microscopy(SEM). Sodium dodecyl sulfate-polyacrylamide gel electrophoresis(SDS-PAGE) and Fourier transform infrared spectroscopy(FTIR) confirmed that both the ASC and PSC were Type I collagen and maintained a complete triple helix structure. These results indicated that both ASC and PSC possessed good biological activity and could be widely used in medical biomaterials and other fields. | 危培 ZHENG Hua SHI Zhenyu 李单 XIANG Yanling | 2019 | Journal of Wuhan University of Technology(Materials Science)2019，34，4： | 3 |
| 11 | Study on the Inheritance,Innovation and Development of Scutellaria baicalensis Georgi in the Treatment of COVID-19显示文摘The discovery of highly effective medicine'Qingfei Paidu Decoction'for COVID-19 is a new era gift of traditional Chinese medicine to the world.The traditional Chinese medicine Scutellaria baicalensis Georgi,as a medicinal plant in the family of Labiatae,is the dominant variety of genuine medicinal material in North China.It is the leading traditional Chinese medicine in the advantageous area of agricultural products with Chinese characteristics in Shangdang of Changzhi City,and it is one of the 21 herbal medicines in the new national prescription'Qingfei Paidu Decoction'for the rapid and effective treatment of COVID-19.This paper introduces S.baicalensis Georgi and its traditional Chinese medicine GAP base,ecologically suitable planting county and medicinal value in poor areas,and studies the intellectual property resources related to S.baicalensis Georgi,such as traditional knowledge,biological genetic resources,patents,new plant varieties,geographical indications,and trademarks.This paper mainly discusses the inheritance essence,innovation and high-quality development strategy of S.baicalensis Georgi under the rural revitalization strategy and traditional Chinese medicine development strategy from the aspects of intellectual property rights,important agricultural cultural heritage,advantageous areas of characteristic agricultural products and so on. | Yuanpeng SUN Yusi LIU Zheng CHENG Zhe WU Yanling SUN | 2020 | Medicinal Plant2020，11，4： | 3 |
| 12 | In situ nitrogen removal processes in intertidal wetlands of the Yangtze Estuary显示文摘Estuarine and intertidal wetlands are important sites for nitrogen transformation and elimination.However,the factors controlling nitrogen removal processes remain largely uncertain in the highly dynamic environments.In this study,continuous-flow experiment combined with 15 N isotope pairing technique was used to investigate in situ rates of denitrification and anaerobic ammonium oxidation(anammox)and their coupling with nitrification in intertidal wetlands of the Yangtze Estuary.The measured rates varied from below the detection limit to 152.39μmol N/(m^2·hr)for denitrification and from below the detection limit to 43.06μmol N/(m^2·hr)for anammox.The coupling links of nitrogen removal processes with nitrification were mainly dependent on nitrate,organic carbon,sulfide,dissolved oxygen and ferric iron in the estuarine and intertidal wetlands.Additionally,it was estimated that the actual nitrogen removal processes annually removed approximately 5%of the terrigenous inorganic nitrogen discharged into the Yangtze Estuary.This study gives new insights into nitrogen transformation and fate in the estuarine and intertidal wetlands. | Cheng Liu Lijun Hou Min Liu Yanling Zheng Guoyu Yin Hongpo Dong Xia Liang Xiaofei Li Dengzhou Gao Zongxiao Zhang | 2020 | Journal of Environmental Sciences2020，32，7： | 2 |
| 13 | Applying Stack Bidirectional LSTM Model to Intrusion Detection显示文摘Nowadays,Internet has become an indispensable part of daily life and is used in many fields.Due to the large amount of Internet traffic,computers are subject to various security threats,which may cause serious economic losses and even endanger national security.It is hoped that an effective security method can systematically classify intrusion data in order to avoid leakage of important data or misuse of data.As machine learning technology matures,deep learning is widely used in various industries.Combining deep learning with network security and intrusion detection is the current trend.In this paper,the problem of data classification in intrusion detection system is studied.We propose an intrusion detection model based on stack bidirectional long short-term memory(LSTM),introduce stack bidirectional LSTM into the field of intrusion detection and apply it to the intrusion detection.In order to determine the appropriate parameters and structure of stack bidirectional LSTM network,we have carried out experiments on various network structures and parameters and analyzed the experimental results.The classic KDD Cup’1999 dataset was selected for experiments so that we can obtain convincing and comparable results.Experimental results derived from the KDD Cup’1999 dataset show that the network with three hidden layers containing 80 LSTM cells is superior to other algorithms in computational cost and detection performance due to stack bidirectional LSTM model’s ability to review time and correlate with connected records continuously.The experiment shows the effectiveness of stack bidirectional LSTM network in intrusion detection. | Ziyong Ran Desheng Zheng Yanling Lai Lulu Tian | 2020 | Computers, Materials & Continua2020，，10： | 2 |
| 14 | Protection of Intellectual Property and Authenticity of Chinese Herbal Medicine Chrysanthemum morifolium显示文摘This paper first introduced Chrysanthemum morifolium Ramat. and its medicinal value. Then, it studied agricultural intellectual property resources such as geographical indications, trademarks, patents, new plant varieties, biological genetic resources, and traditional knowledge related to C. morifolium . Finally, it summarized poverty-stricken areas ecologically suitable for planting C. morifolium , analyzed the GAP certification of C. morifolium , pollution-free agricultural product certification, green food certification, and organic food certification, and discussed the strategies for C. morifolium intellectual property protection and authenticity protection in the context of TCM development strategy and rural revitalization strategy. | Yuanpeng SUN Yanling SUN Xueqin SIMA Zhe WU Zheng CHENG | 2019 | Medicinal Plant2019，10，4： | 2 |
| 15 | Simulation Analysis of Stress Field of Walnut Shell Composite Powder in Laser Additive Manufacturing Forming显示文摘A calculation model of stress field in laser additive manufacturing of walnut shell composite powder(walnut shell/Co-PES powder)was established.The DFLUX subroutine was used to implement the moveable application of a double ellipsoid heat source by considering the mechanical properties varying with temperature.The stress field was simulated by the sequential coupling method,and the experimental results were in good accordance with the simulation results.In addition,the distribution and variation of stress and strain field were obtained in the process of laser additive manufacturing of walnut shell composite powder.The displacement of laser additive manufacturing walnut shell composite parts gradually decreased with increasing preheating temperature,decreasing laser power and increasing scanning speed.During the cooling process,the displacement of laser additive manufacturing of walnut shell composite parts gradually increased with the increasing preheating temperature,decreasing scanning speed and increasing laser power. | Yueqiang Yu Tingang Ma Suling Wang Minzheng Jiang Yanling Guo Ting Jiang Shuaiqi Huang Ziming Zheng Bo Yan Jiyuan Lv | 2023 | Journal of Renewable Materials2023，11，1： | 1 |
| 16 | Effect of Al_(2)O_(3) content on the viscosity and structure of CaO-SiO_(2)-Cr_(2)O_(3)-Al_(2)O_(3) slags显示文摘The effect of Al_(2)O_(3) content on the viscosity and structure of CaO-SiO_(2)-Cr_(2)O_(3)Al_(2)O_(3) slags was investigated to facilitate recycling of Cr in steelmaking slags.The slags exhibit good Newtonian behavior at high temperature.The viscosity of acidic slag first increases from 0.825 to 1.141 Pa·s as the Al_(2)O_(3) content increases from 0 to 10wt%and then decreases to 1.071 Pa·s as the Al_(2)O_(3) content increases further to 15wt%.The viscosity of basic slag first increases from 0.084 to 0.158 Pa·s as the Al_(2)O_(3) content increases from 0 to 15wt%and then decreases to 0.135 Pa·s as the Al_(2)O_(3) content increases further to 20wt%.Furthermore,Cr_(2)O_(3)containing slag requires less Al_(2)O_(3) to reach the maximum viscosity than Cr_(2)O_(3)free slag;the Al_(2)O_(3) contents at which the behavior changes are 10wt%and 15wt%for acidic and basic slags,respectively.The ac-tivation energy of the slags is consistent with the viscosity results.Raman spectra demonstrate that[AlO_(4)]tetrahedra appear initially and were replaced by[AlO_(6)]octahedra with further addition of Al_(2)O_(3).The dissolved organic phosphorus content of the slag first increases and then de-creases with increasing Al_(2)O_(3) content,which is consistent with the viscosity and Raman results. | Fang Yuan Zheng Zhao Yanling Zhang Tuo Wu | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，8： | 1 |
| 17 | Preparation and properties of in situ polymerized fiber-reinforced nylon composites 显示文摘 | Zheng Liyan Wang Yanling Wan Yizeng | 2002 | Journal of Materials Science2002，21，13： | 1 |
| 18 | Premature Stop Codon at Residue 101 within HIV-1 Rev Does Not Influence Viral Replication of Clade BC but Severely Reduces Viral Fitness of Clade B显示文摘HIV-1 Rev is an accessory protein that plays a key role in nuclear exportation,stabilization,and translation of the viral mRNAs.Rev of HIV-1 clade BC often shows a truncation of 16 AAs due to a premature stop codon at residue 101.This stop codon presents the highest frequency in clade BC and the lowest frequency in clade B.In order to discover the potential biological effect of this truncation on Rev activity and virus replication of clade BC,we constructed Rev expression vectors of clade BC with or without 16 AAs within C-terminal separately,and replaced the stop codon by Q in a CRF07_BC infectious clone.We found that 16 AAs truncation had no effect on expression and activity of Rev in clade BC.Also,the mutation from the stop codon to Q had no effect on virus replication of clade BC.Next,to investigate the effect of this truncation on Rev activity and replication capacity of clade B,Rev expression vectors of clade B carrying or lacking 16 AAs in C-terminal were constructed respectively,and residue Q at position 101 within Rev was substituted by the stop codon in a clade B infectious clone.It was found that 16 AAs truncation significantly down-regulated Rev expression and impaired clade B Rev activity.Furthermore,a Q-to-stop codon substitution within Rev significantly reduced viral replication fitness of clade B.These results indicate that the premature stop codon at residue 101 within Rev exerts diverse impact on viral replication among different HIV-1 clades. | Zheng Wang Xiaolin Ji Yanling Hao Kunxue Hong Liying Ma Dan Li Yiming Shao | 2020 | Virologica Sinica2020，35，2： | 1 |
| 19 | Thermoelectric performance enhancement by manipulation of Sr/Ti doping in two sublayers of Ca_(3)Co_(4)O_(9)显示文摘Thermoelectric(TE)performance of Ca_(3)Co_(4)O_(9)(CCO)has been investigated extensively via a doping strategy in the past decades.However,the doping sites of different sublayers in CCO and their contributions to the TE performance remain unrevealed because of its strong correlated electronic system.In this work,Sr and Ti are chosen to realize doping at the[Ca_(2)CoO_(3)]and[CoO_(2)]sublayers in CCO.It was found that figure of merit(ZT)at 957 K of Ti-doped CCO was improved 30% than that of undoped CCO whereas 1 at% Sr doping brought about a 150% increase in ZT as compared to undoped CCO.The significant increase in electronic conductivity and the Seebeck coefficient are attributed to the enhanced carrier concentration and spin-entropy of Co^(4+) originating from the Sr doping effects in[Ca_(2)CoO_(3)]sublayer,which are evidenced by the scanning electron microscope(SEM),Raman,Hall,and X-ray photoelectron spectroscopy(XPS)analysis.Furthermore,the reduced thermal conductivity is attributed to the improved phonon scattering from heavier Sr doped Ca site in[Ca_(2)CoO_(3)]sublayer.Our findings demonstrate that doping at Ca sites of[Ca_(2)CoO_(3)]layer is a feasible pathway to boost TE performance of CCO material through promoting the electronic conductivity and the Seebeck coefficient,and reducing the thermal conductivity simultaneously.This work provides a deep understanding of the current limited ZT enhancement on CCO material and provides an approach to enhance the TE performance of other layered structure materials. | Li ZHANG Yichen LIU Thiam Teck TAN Yi LIU Jian ZHENG Yanling YANG Xiaojiang HOU Lei FENG Guoquan SUO Xiaohui YE Sean LI | 2020 | Journal of Advanced Ceramics2020，9，6： | 1 |
| 20 | Microwave- assisted extraction of flavonoids from Chinese herb Radix Puerariae (Ge Gen)显示文摘 | WANG Yanling XI Guangsheng ZHENG Yongchtm | 2010 | Journal of Medicinal Plants Research2010，4，4： | 1 |
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