期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到2,019篇文章
< 1 2 … 101 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
Alternate wetting and moderate drying irrigation improves rice cooking and eating quality by optimizing lipid and fatty acid synthesis in grains 认领 引用
1
作者 Yunji Xu Xuelian Weng +7 位作者 Shupeng Tang Xiufeng Jiang Weiyang Zhang Kuanyu Zhu Guanglong Zhu Hao Zhang Zhiqin Wang Jianchang Yang 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2026年第1期68-80,共13页
Alternate wetting and drying irrigation(AWD)significantly influences the cooking and eating quality of rice(Oryza sativa L.).However,the mechanisms by which AWD affects rice cooking and eating quality remain unclear.L... Alternate wetting and drying irrigation(AWD)significantly influences the cooking and eating quality of rice(Oryza sativa L.).However,the mechanisms by which AWD affects rice cooking and eating quality remain unclear.Lipid and free fatty acid contents in grains correlate positively with cooking and eating quality of rice.This study examined Yangdao 6(YD6,a conventional taste indica inbred)and Nanjing 9108(NJ9108,a superior taste japonica inbred)cultivated under conventional irrigation(CI),alternate wetting and moderate drying irrigation(AWMD),and alternate wetting and severe drying irrigation(AWSD)from 10 days after transplanting to maturity.The research investigated the relationship between lipid and free fatty acid biosynthesis in grains and the cooking and eating quality of rice.Compared to CI treatment,AWMD significantly enhanced the contents of lipid,total free fatty acids(TFFAs),free unsaturated fatty acids(FUFAs),linoleic acid,and oleic acid in milled rice by increasing activities of enzymes associated with lipid synthesis,while AWSD produced opposite effects.Correlation analysis revealed that elevated levels of lipid,TFFAs,FUFAs,linoleic acid,and oleic acid contribute to improved rice cooking and eating quality.The findings demonstrate that AWMD enhances cooking and eating quality of milled rice through optimization of lipid and fatty acid synthesis in rice grains. 展开更多
关键词 rice(Oryza sativa L.) cooking and eating quality lipid content fatty acid content alternate wetting and drying irrigation
暂未订购 下载PDF
Untargeted lipidomic analysis of milled rice under different alternate wetting and soil drying irrigation regimes 认领 引用 被引量：1
2
作者 Yunji Xu Xuelian Weng +6 位作者 Shupeng Tang Weiyang Zhang Kuanyu Zhu Guanglong Zhu Hao Zhang Zhiqin Wang Jianchang Yang 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2025年第9期3351-3367,共17页
Alternate wetting and soil drying irrigation(AWD)technique is crucial in infuencing grain quality in rice(Oryza sativa L.).Lipids are the third most abundant constituents in rice grains,after starch and proteins,and a... Alternate wetting and soil drying irrigation(AWD)technique is crucial in infuencing grain quality in rice(Oryza sativa L.).Lipids are the third most abundant constituents in rice grains,after starch and proteins,and are closely related to grain quality.However,it remains unclear about the changes in lipids profling under different AWD regimes.This study set up three irrigation regimes including conventional irrigation(CI),alternate wetting and moderate soil drying irrigation(AWMD),and alternate wetting and severe soil drying irrigation(AWSD).It explored lipidome changes in milled rice of Yangdao 6(YD6)using the untargeted lipidomics approach and analyzed rice cooking and eating quality.The results identifed seven lipid classes,55 lipid subclasses,and 1,086 lipid molecular species.Compared with the CI regime,the AWMD regime mainly altered lipid subclasses consisting of triglyceride(TG),ceramide(Cer),diglyceride(DG),bis-methyl lysophosphatidic acid(BisMePA),phosphocholine(PC),phosphoethanolamine(PE),monogalactosyldiacylglycerol(MGDG),and digalactosyl diglyceride(DGDG)in milled rice and improved cooking and eating quality of rice;in contrast,the AWSD regime distinctly changed lipid subclasses like TG,Cer,DG,PC,PE,hexosylceramide(Hex1Cer),DGDG,and BisMePA and degraded cooking and eating quality of rice.Specifcally,AWMD most signifcantly altered the expressions of lipid molecules,including DGDG(18:0_18:2),DGDG(16:0_14:0),PC(33:1),Cer(t17:0_26:0),and Cer(t17:0_16:0);AWSD most obviously influenced the expressions of TG(6:0_14:0_18:3),PC(41:1),TG(19:1_18:4_18:4),Hex1Cer(d18:2_24:0+O),and Hex1Cer(d18:2_24:1).These 10 altered lipid molecules in milled rice can be preferentially used for investigating their relationships with grain quality in rice. 展开更多
关键词 rice(Oryza sativa L.) untargeted lipidomics analysis alternate wetting and soil drying irrigation milled rice cooking and eating quality
暂未订购 下载PDF
Author Correction:Genetic resources resistant to black spot(Alternaria alternate)identified from Chrysanthemum-related genera and potential underlying mechanisms 认领 引用
3
作者 Qingling Zhan Wenjie Li +5 位作者 Ye Liu Shuang Zhao Sumei Chen Weimin Fang Fadi Chen Zhiyong Guan 《Ornamental Plant Research》 2025年第1期440-441,共2页
Since the publication of this article,the authors have noted several minor issues requiring corrections:(1)Error in the Abstract In the Abstract of the published article,instead of"A.alternate",it should be ... Since the publication of this article,the authors have noted several minor issues requiring corrections:(1)Error in the Abstract In the Abstract of the published article,instead of"A.alternate",it should be in italic as"A.alternate".(2)Error in the section"Determination of antifungal activity of Germacrene D"under Materials and methods In the published article,"bacterial"should be replaced with"fungus"to align with the original intent.(3)Error in the section of"Differences in leaf epidermis structure of resistant and susceptible germplasms"under Results The term"the lower epidermal hairs"was non-standard and has been revised to"the lower epidermal trichome". 展开更多
关键词 Alternaria alternate leaf epidermis structure chrysanthemum related genera genetic resources trichome germacrene antifungal activity black spot
暂未订购 下载PDF
Intermediate-motivated charge transfer via alternate dipoles accelerating the deep redox of iodine/sulfur/molybdenum for high-performance multiple ion batteries 认领 引用
4
作者 Chao Chen Ruijie Li Yun Gong 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2025年第5期297-311,共15页
Sodium-sulfur and sodium-iodine batteries are attractive due to their low cost and high capacities.However,they suffer from polysulfide/polyiodide dissolution and fast capacity decay.To solve these issues,herein,an or... Sodium-sulfur and sodium-iodine batteries are attractive due to their low cost and high capacities.However,they suffer from polysulfide/polyiodide dissolution and fast capacity decay.To solve these issues,herein,an organic species-intercalated layered MoS2 with oxygen-dopant(Org-MoS2) was designed for the iodine encapsulation.The chemically-bonded S2- from the S-Mo-S layer can not only stabilize the in situ generated I+ intermediate to boost the redox kinetics and deep transformations of 2I-←→I2←→2I+,but also undergo the conversion of S2-←→Sδ- in the high voltage range of 1.5-3.4 V without structural collapse and shuttle effect.That is owning to the I+-induced local charge and the electron reservoir of multi-valent Mo,which facilitate effective charge transfer via alternate dipoles of Iδ+-δ-Sδ+/δ-Oδ+-δ-Moδ+-δ-Sδ+ and promote the redox of I/S/Mo.Meanwhile,the incorporated organic species are transformed into an aromatic carbonaceous material with improved electron conductivity and thinner thickness in the cycling test accompanied by the exposure of more Mo-O-Mo linkages,resulting in an increasing ultrahigh capacity and outstanding long-term durability of Org-MoS2@I2. 展开更多
关键词 Intermediate Alternate dipole Organic species-intercalated MoS2 Oxygen-doping Na-I2battery
暂未订购 下载PDF
Effects of Alternate Moistube Irrigation on the Growth of Spinach(Spinacia oleracea)and Water Spinach(Ipomoea aquatica)under Controlled Conditions 认领 引用
5
作者 Lixia SHEN Ronghao LIU Shuhui LIU 《Agricultural Biotechnology》 2025年第4期31-36,41,共6页
Moistube irrigation is a newly-developed irrigation technique that utilizes a semipermeable membrane to release water slowly and continuously into the plant root zone.Alternate Moistube Irrigation(AMI)is a combination... Moistube irrigation is a newly-developed irrigation technique that utilizes a semipermeable membrane to release water slowly and continuously into the plant root zone.Alternate Moistube Irrigation(AMI)is a combination of alternative irrigation and moistube irrigation.In order to investigate the effects of AMI on plant growth,greenhouse experiments were conducted on spinach(Spinacia oleracea)and water spinach(Ipomoea aquatica)plants at different time.We measured soil water content at a depth of 20 cm in the planting boxes,and also determined seed emergence rate,plant height,largest leaf area,fresh weight per plant,yield,and irrigation water productivity(IWP)for both spinach and water spinach.The results showed that the AMI treatments had significantly higher soil water content than the conventional surface irrigation control(CK).The emergence rates of spinach and water spinach were significantly higher in the AMI treatments than in the CK,and the plant height,largest leaf area,and fresh weight during the middle and late stages of spinach and water spinach growth were also significantly higher than those of the CK.Both spinach and water spinach grew well and produced high yield with high IWP under AMI with a high water head pressure of 1.5 m at tube spacing of 20 or 30 cm.We found that AMI with a suitable combination of head pressure and tube spacing can promote plant growth and increase yield and IWP under controlled conditions. 展开更多
关键词 Alternate Moistube Irrigation Spinach Water spinach Soil moisture Yield Irrigation water productivity
暂未订购 下载PDF
Genetic resources resistant to black spot(Alternaria alternate)identified from Chrysanthemum-related genera and potential underlying mechanisms 认领 引用 被引量：2
6
作者 Qingling Zhan Wenjie Li +5 位作者 Ye Liu Shuang Zhao Sumei Chen Weimin Fang Fadi Chen Zhiyong Guan 《Ornamental Plant Research》 2024年第1期350-360,共11页
Chrysanthemum black spot disease caused by Alternaria alternate infestation is a widespread and extremely destructive foliar disease of chrysanthemums.We compared the resistance of 14 chrysanthemum relatives to chrysa... Chrysanthemum black spot disease caused by Alternaria alternate infestation is a widespread and extremely destructive foliar disease of chrysanthemums.We compared the resistance of 14 chrysanthemum relatives to chrysanthemum black spot disease,and identified the main indicators for the evaluation and screening of chrysanthemum disease resistance,which is of great significance in laying the foundation for a larger-scale screening of chrysanthemum relatives for disease resistance and the breeding of new disease-resistant cultivars.After artificial inoculation and identification,two disease-resistant germplasm resources,11 moderately resistant materials,and one sensitive material were obtained.In both resistant and susceptible species,we found that the trichome density and leaf wax content of the resistant material were significantly higher than that of the sensitive material,while the stomata size was smaller than that of the sensitive material.In addition,we found that the leaf extract of the disease-resistant germplasm effectively inhibited the growth rate of A.alternate mycelium on the plate,and GC-MS components found that the leaves of resistant germplasm contained more volatile antifungal organic compounds,of which the abundant falcarinol and Germacrene D might play an important role in resistance to chrysanthemum black spot disease.In summary,epidermal trichome density,wax content and terpene substance content are three important reference indicators for disease resistance evaluation of related genera of chrysanthemum.The identified resistant germplasm can also be used as parents for future cross-breeding or as rootstocks. 展开更多
关键词 Alternaria alternate chrysanthemum black spot disease foliar disease Chrysanthemum relatives breeding new disease genetic resources chrysanthemum black spot alternaria alternate infestation
暂未订购 下载PDF
Grain yield and water use efficiency of super rice under soil water deficit and alternate wetting and drying irrigation 认领 引用 被引量：30
7
作者 ZHOU Qun JU Cheng-xin +4 位作者 WANG Zhi-qin ZHANG Hao LIU Li-jun YANG Jian-chang ZHANG Jian-hua 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2017年第5期1028-1043,共16页
This study investigated if super rice could better cope with soil water deficit and if it could have better yield performance and water use efficiency （WUE） under alternate wetting and drying （AWD） irrigation than... This study investigated if super rice could better cope with soil water deficit and if it could have better yield performance and water use efficiency （WUE） under alternate wetting and drying （AWD） irrigation than check rice. Two super rice cultivars and two elite check rice cultivars were grown in pots with three soil moisture levels, well watered （WW）, moderate water deficit （MWD） and severe water deficit （SWD）. Two cultivars, each for super rice and check rice, were grown in field with three irrigation regimes, alternate wetting and moderate drying （AWMD）, alternate wetting and severe drying （AWSD） and conventional irrigation （CI）. Compared with that under WW, grain yield was significantly decreased under MWD and SWD treatments, with less reduction for super rice than for check rice. Super rice had higher percentage of productive tillers, deeper root distribution, higher root oxidation activity, and greater aboveground biomass production at mid and late growth stages than check rice, especially under WMD and WSD. Compared with CI,AWMD increased, whereasAWSD decreased grain yield, with more increase or less decrease for super rice than for check rice. Both MWD and SWD treatments and eitherAWMD orAWSD regime significantly increased WUE compared with WW treatment or CI regime, with more increase for super rice than for check rice. The results suggest that super rice has a stronger ability to cope with soil water deficit and holds greater promising to increase both grain yield and WUE by adoption of moderate AWD irrigation. 展开更多
关键词 super rice soil water deficit alternate wetting and drying （AWD） grain yield water use efficiency
暂未订购 下载PDF
Agronomic performance of drought-resistance rice cultivars grown under alternate wetting and drying irrigation management in southeast China 认领 引用 被引量：17
8
作者 Guang Chu Tingting Chen +3 位作者 Song Chen Chunmei Xu Danying Wang Xiufu Zhang 《The Crop Journal》 SCIE CSCD 2018年第5期482-494,共13页
Compared to drought-susceptible rice cultivars(DSRs),drought-resistance rice cultivars(DRRs)could drastically reduce the amount of irrigation water input and simultaneously result in higher grain yield under water-sav... Compared to drought-susceptible rice cultivars(DSRs),drought-resistance rice cultivars(DRRs)could drastically reduce the amount of irrigation water input and simultaneously result in higher grain yield under water-saving irrigation conditions.However,the mechanisms underlying these properties are unclear.We investigated how improved agronomic traits contribute to higher yield and higher water use efficiency(WUE)in DRRs than in DSRs under alternate wetting and drying(AWD).Two DRRs and two DSRs were field-grown in 2015 and 2016 using two different irrigation regimes:continuous flooding(CF)and AWD.Under CF,no statistical differences in grain yield and WUE were observed between DRRs and DSRs.Irrigation water under the AWD regime was 275–349 mm,an amount 49.8%–56.2% of that(552–620 mm)applied under the CF regime.Compared to CF,AWD significantly decreased grain yield in both DRRs and DSRs,with a more significant reduction in DSRs,and WUE was increased in DRRs,but not in DSRs,by 9.9%–23.0% under AWD.Under AWD,DRRs showed a 20.2%–26.2% increase in grain yield and an 18.6%–24.5% increase in WUE compared to DSRs.Compared to DSRs,DRRs showed less redundant vegetative growth,greater sink capacity,higher grain filling efficiency,larger root biomass,and deeper root distribution under AWD.We conclude that these improved agronomic traits exert positive influences on WUE in DRRs under AWD. 展开更多
关键词 Agronomic traits Alternate wetting and drying Drought-resistance rice cultivars Grain yield Water use efficiency
暂未订购 下载PDF
亳芍内生真菌Alternaria alternate次生代谢产物的研究 认领 引用 被引量：12
9
作者 王举涛 马宗慧 +4 位作者 王国凯 刘劲松 许凤清 彭代银 王刚 《中草药》 CAS CSCD 北大核心 2019年第5期1061-1065,共5页
目的研究亳芍内生真菌Alternariaalternate的次生代谢产物。方法利用硅胶、SephadexLH-20、反相、中压、高效液相制备等多种色谱法分离化合物,采用波谱方法对化合物进行结构鉴定。结果从内生真菌Alternaria alternate次生代谢产物中分... 目的研究亳芍内生真菌Alternariaalternate的次生代谢产物。方法利用硅胶、SephadexLH-20、反相、中压、高效液相制备等多种色谱法分离化合物,采用波谱方法对化合物进行结构鉴定。结果从内生真菌Alternaria alternate次生代谢产物中分离得到15个化合物,分别鉴定为methyl 4-acetamido-3-hydroxybenzoate(1)、(E)-methyl-5-hydroxy-3-methylpent-2-eno(2)、异苯并呋喃酮A(3)、对羟基苯乙酮(4)、6-hydroxy-isosclerone(5)、talaroflavone(6)、7-hydroxy-2-hydroxymethyl-5-methyl-4H-chromen-4-one (7)、 alternarienonicacid (8)、 7-hydroxy-2,5-dimethy-4H-1-benzopyran-4-one (9)、 5-hydroxy-epialtenuene(10)、交链孢醇(11)、methyl 3-hydroxybenzoate(12)、stemphyperylenol(13)、细格菌素(14)、交链孢烯(15)。结论其中化合物1、3、5～10、12～13为首次从内生真菌Alternaria alternate次生代谢产物中分离得到。 展开更多
关键词 亳芍 Alternaria alternate 内生真菌 次生代谢产物 异苯并呋喃酮A
暂未订购 下载PDF
Ultrathin, flexible, and high-strength Ni/Cu/metallic glass/Cu/Ni composite with alternate magneto-electric structures for electromagnetic shielding 认领 引用 被引量：10
10
作者 Zenan Ma Jiawei Li +6 位作者 Jijun Zhang Aina He Yaqiang Dong Guoguo Tan Mingqiang Ning Qikui Man Xincai Liu 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2021年第22期43-50,共8页
Electromagnetic interference(EMI)shielding materials with ultrathin,flexible,superior mechanical and thermal management properties are highly desirable for smart and wearable electronics.Here,ultrathin and flexible Ni... Electromagnetic interference(EMI)shielding materials with ultrathin,flexible,superior mechanical and thermal management properties are highly desirable for smart and wearable electronics.Here,ultrathin and flexible Ni/Cu/metallic glass/Cu/Ni(Ni/Cu/MG)multilayer composite with alternate magnetic and electrical structures was designed via facial electroless plating of Cu and Ni on an Fe-based metallic glass.The resultant 0.02 mm-thick Ni/Cu/MG composite displays a superior EMI shielding effectiveness(EMI SE)of 35 dB and a great EMI SE of 1750 dB/mm,which is greater than those of composites with monotonous multilayer or homogeneous structures.The improved EMI SE originates from the massive ohmic losses,the enhanced internal reflection/absorption,and the abundant interfacial polarization loss.Particularly,Ni/Cu/MG exhibits a high tensile strength of up to 1.2 GPa and outstanding mechanical stability,enabling the EMI SE remains unchanged after 10,000 times of bending.Moreover,Ni/Cu/MG has excellent Joule heating characteristics and thermal stability,which is very suitable for heating components of wearable hyperthermia devices. 展开更多
关键词 Electromagnetic shielding Thermal management Mechanical properties Fe-based metallic glasses Alternate magnetic and electrical structures
暂未订购 下载PDF
Ablation behavior of(ZrC/SiC)3alternate coating prepared on sharp leading edge C/C composites by CVD 认领 引用 被引量：12
11
作者 B.Li H.J.Li +3 位作者 X.Y.Yao X.F.Tian Y.J.Jia G.H.Feng 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2022年第20期129-139,共11页
A(ZrC/SiC)3alternate coating was deposited on sharp leading edge(SLE)C/C composites by chemical vapor deposition(CVD).The ablation behavior was examined via oxyacetylene torch with heat flux of 2.38 MW/m^2.The resu... A(ZrC/SiC)3alternate coating was deposited on sharp leading edge(SLE)C/C composites by chemical vapor deposition(CVD).The ablation behavior was examined via oxyacetylene torch with heat flux of 2.38 MW/m^2.The results indicated that the alternate coating exhibited great ablation resistance,providing an effective protection for C/C composites.In initial rapid heating stage,the(ZrC/SiC)3 alternate coating can relieve thermal stress,avoiding the peeling of coating and keeping an intact coating structure.In subsequent ablation,the Si C layers in central region were consumed rapidly,leaving layered interspaces.Three stacked ZrO2 layers were reserved with the assistance of the release of thermal stress by interspaces,offering a great anti-scouring effect.In transition and border regions,the alternate Si C layers can delay oxygen erosion of inner coating and C/C substrate by the formation of SiO2.It is believed that the results would be helpful for the design and application of anti-ablation coatings on SLE C/C composites. 展开更多
关键词 Alternate coating ZrC/SiC Sharp leading edge Chemical vapor deposition C/C composites
暂未订购 下载PDF
Identification of three Berberis species as potential alternate hosts for Puccinia striiformis f. sp. tritici in wheat-growing regions of Xinjiang, China 认领 引用 被引量：5
12
作者 ZHUANG Hua ZHAO Jing +2 位作者 HUANG Li-li KANG Zhen-sheng ZHAO Jie 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2019年第12期2786-2792,共7页
Since the recent discovery of barberry(Berberis spp.)as an alternate host for the stripe rust pathogen Puccinia striiformis,many Chinese Berberis species have been identified as alternate hosts for P.striiformis f.sp.... Since the recent discovery of barberry(Berberis spp.)as an alternate host for the stripe rust pathogen Puccinia striiformis,many Chinese Berberis species have been identified as alternate hosts for P.striiformis f.sp.tritici.However,little is known about Berberis species and their distribution in wheat-growing regions in Xinjiang,China,where stripe rust is endemic.As the largest province or autonomous region,Xinjiang represents a relatively independent epidemic region for wheat stripe rust in China.In this study,we con ducted a survey of barberry plants in the main wheat-growi ng areas of Xinjiang.We iden tified three Berberis species,B.heteropoda,B.nummularia and B.kaschgarica,and con firmed their roles as potential alternate hosts for P.striiformis f.sp.tritici in the laboratory. 展开更多
关键词 barberry alternate host sexual reproduction stripe rust yellow rust
暂未订购 下载PDF
Alternate Furrow Irrigation: A Practical Way to Improve Grape Quality and Water Use Efficiency in Arid Northwest China 认领 引用 被引量：8
13
作者 DU Tai-sheng KANG Shao-zhong +1 位作者 YAN Bo-yuan ZHANG Jian-hua 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2013年第3期509-519,共11页
Field experiments were conducted for two years to investigate the benefits of alternate furrow irrigation on fruit yield, quality and water use efficiency of grape （Vitis vinifera L. cv. Rizamat） in the arid region ... Field experiments were conducted for two years to investigate the benefits of alternate furrow irrigation on fruit yield, quality and water use efficiency of grape （Vitis vinifera L. cv. Rizamat） in the arid region of Northwest China. Two irrigation treatments were included, i.e., conventional furrow irrigation （CFI, two root-zones were simultaneously irrigated during the consecutive irrigation） and alternate partial root-zone furrow irrigation （AFI, two root-zones were alternatively irrigated during the consecutive irrigation）. Results indicate that AFI maintained similar photosynthetic rate （Pn） but with a reduced transpiration rate when compared to CFI. As a consequence, AFI improved water use efficiency based on evapotranspiration （WUEEr, fruit yield over water consumed） and irrigation （WUE~, fruit yield over water irrigated） by 30.0 and 34.5%, respectively in 2005, and by 12.7 and 17.7%, respectively in 2006. AFI also increased the edible percentage of berry by 2.91-4.79% significantly in both years. Vitamin C （Vc） content content of berry was increased by 25.6-37.5%, and tritrated acidity （TA） was reduced by 9.5-18.1% in AFI. This resulted in an increased total soluble solid content （TSS） to TA ratio （TSS/TA） by 11.5-16.7% when compared to CFI in both years. Our results indicate that alternate furrow irrigation is a practical way to improve grape fruit quality and water use efficiency for irrigated crops in arid areas. 展开更多
关键词 alternate furrow irrigation partial root-zone irrigation fruit yield water use efficiency fruit quality grape（Fitis vinifera L. ）
暂未订购 下载PDF
Sublayer design and ablation resistance of CVD-TaC alternate coatings with different crystallite morphologies for C/C composites 认领 引用 被引量：6
14
作者 Jing’an Kong Yulei Zhang +4 位作者 Hanhui Wang Guohui Chen Wenhan Gai Pengfei Zhang Hejun Li 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2023年第10期1-10,共10页
Tantalum carbon(TaC)alternate coatings with sublayers comprised of different crystallite morphologies were prepared on carbon/carbon composites by chemical vapor deposition.Their ablative behaviors and defending mecha... Tantalum carbon(TaC)alternate coatings with sublayers comprised of different crystallite morphologies were prepared on carbon/carbon composites by chemical vapor deposition.Their ablative behaviors and defending mechanisms were both investigated.The specimen with the sublayer composed of columnar crystals exhibited a better ablation resistance due to the toughness enhancement induced by the lami-nated structure.However,the mechanical denudation of the sample only containing acicular crystals and the coating spallation caused by superfluous gaseous products of the sample with the sublayer composed of nanocrystals both indicate their inferior anti-ablation properties.It is believed that the results will be helpful for the structural design and practical application of chemical vapor deposition(CVD)alternate coatings. 展开更多
关键词 Alternate coating Chemical vapor deposition Crystallite morphology Carbon/carbon composite Ablation behavior
暂未订购 下载PDF
Effect of fertigation frequency on soil nitrogen distribution and tomato yield under alternate partial root-zone drip irrigation 认领 引用 被引量：5
15
作者 FENG Xu-yu PU Jing-xuan +5 位作者 LIU Hai-jun WANG Dan LIU Yu-hang QIAO Shu-ting LEI Tao LIU Rong-hao 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2023年第3期897-907,共11页
Alternate partial root-zone drip fertigation (ADF) is a combination of alternating irrigation and drip fertigation,with the potential to save water and increase nitrogen (N) fertilizer efficiency.A 2-year greenhouse e... Alternate partial root-zone drip fertigation (ADF) is a combination of alternating irrigation and drip fertigation,with the potential to save water and increase nitrogen (N) fertilizer efficiency.A 2-year greenhouse experiment was conducted to evaluate the effect of different fertigation frequencies on the distribution of soil moisture and nutrients and tomato yield under ADF.The treatments included three ADF frequencies with intervals of 3 days (F3),6 days (F6) and 12 days (F12),and conventional drip fertigation as a control (CK),which was fertilized once every 6 days.For the ADF treatments,two drip tapes were placed 10 cm away on each side of the tomato row,and alternate drip irrigation was realized using a manual valve on the distribution tapes.For the CK treatment,a drip tape was located close to the roots of the tomato plants.The total N application rate of all treatments was 180 kg ha-1.The total irrigation amounts applied to the CK treatment were450.6 and 446.1 mm in 2019 and 2020,respectively;and the irrigation amounts applied to the ADF treatments were 60%of those of the CK treatment.The F3 treatment resulted in water and N being distributed mainly in the 0–40-cm soil layer with less water and N being distributed in the 40–60-cm soil layer.The F6 treatment led to 21.0 and 29.0%higher 2-year average concentration of mineral N in the 0–20 and 20–40-cm soil layer,respectively and a 23.0%lower N concentration in the 40–60-cm soil layer than in the CK treatment.The 2-year average tomato yields of the F3,F6,F12,and CK treatments were 107.5,102.6,87.2,and 98.7 t ha-1,respectively.The tomato yield of F3 was significantly higher (23.3%) than that in the F12 treatment,whereas there was no significant difference between the F3 and F6 treatment.The F6 treatment resulted in yield similar to the CK treatment,indicating that ADF could maintain tomato yield with a 40%saving in water use.Based on the distribution of water and N,and tomato yield,a fertigation frequency of 6 days under ADF should be considered as a water-saving strategy for greenhouse tomato production. 展开更多
关键词 alternate partial root-zone irrigation drip fertigation soil water soil mineral content tomato yield
暂未订购 下载PDF
Response mechanism study of alternate ZrC-10vol.%SiC/ZrC-70vol.%SiC coatings with various sublayer thicknesses for cyclic and long-term thermal exposure 认领 引用 被引量：4
16
作者 Guanghui Feng Xiyuan Yao +1 位作者 Yulan Yu Hejun Li 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2023年第9期153-162,共10页
To explore the influence of sublayer numbers on the structure evolution and thermal stress level,an alternate coating consisting of ZrC-10 vol.%SiC and ZrC-70 vol.%SiC sublayers was designed in this work.With a basica... To explore the influence of sublayer numbers on the structure evolution and thermal stress level,an alternate coating consisting of ZrC-10 vol.%SiC and ZrC-70 vol.%SiC sublayers was designed in this work.With a basically consistent general thickness,three coatings constituted by 2,4 and 6 sublayers were prepared by plasma spraying,which then were assessed using an oxyacetylene torch under cyclic and long-term exposure.The coating with 6 sublayers was supposed to be the one with the best ablation property,finite element analysis also evidenced its least thermal stress among all these samples.After being ablated for 240 s,the linear and mass ablation rates of the coating with 6 sublayers decreased by 51.27%and 14.41%as compared to that with 4 sublayers.Post-test analysis proved the existence of Si-based products,which help the outmost surface to develop a dense profile.Additionally,the yielded alternate dense/porous scale had a preferable toughness,allowing it to maintain a good integrity. 展开更多
关键词 Alternate coating Sublayer numbers Carbon/carbon composites High-temperature test Plasma spraying
暂未订购 下载PDF
Optimization of Roll Shifting Strategy of Alternately Rolling in Hot Strip Mill 认领 引用 被引量：5
17
作者 LI Wei-gang GUO Zhao-hui +1 位作者 YI Jian LIU Xiang-hua 《Journal of Iron and Steel Research International》 SCIE CAS CSCD 2012年第5期37-42,共6页
An optimization solution to roll shifting strategy for alternately rolling campaign is presented. All the strips in a rolling campaign are divided into narrow strips and wide ones, and shifting position of narrow stri... An optimization solution to roll shifting strategy for alternately rolling campaign is presented. All the strips in a rolling campaign are divided into narrow strips and wide ones, and shifting position of narrow strips is obtained by the recursive method, and then shifting position of wide strips is optimized by NSGA-II which is a multiobjective genetic algorithm. For wide strips, a multi-objective optimization model of roll shifting strategy is pro posed, which takes 3 wear contour factors including edge smoothness, body smoothness and edge drop as optimization objectives. The Pareto optimal front of roll shifting strategy can be gained quickly by NSGA-II, which suggests a series of alternative solutions to roll shifting strategy. Analysis shows that the conflict exists among the 3 objectives. The final optimal solution is selected from the Pareto optimal solutions by the weighted-sum decision-making method. Industrial production proves the validity of the solution, and it can improve strip profile of alternately rolling, reduce strip edge wave, and extend the rolling miles of rolling campaigns. 展开更多
关键词 hot strip mill alternately rolling work roll shifting NSGA-II pareto optimal solution
暂未订购 下载PDF
Alternate operation characteristics of a solar-ground source heat pump system 认领 引用 被引量：6
18
作者 杨卫波 陈振乾 施明恒 《Journal of Southeast University(English Edition)》 EI CAS 2010年第2期327-332,共6页
In order to investigate the alternate operation characteristics of a solar-ground source heat pump system（SGSHPS）,various alternate operation modes are put forward and defined.A two-dimensional mathematical model wi... In order to investigate the alternate operation characteristics of a solar-ground source heat pump system（SGSHPS）,various alternate operation modes are put forward and defined.A two-dimensional mathematical model with freezing/melting phase changes is developed for the heat transfer analysis of the soil.Based on the numerical solution of the model,the variation trends of underground soil temperature of the SGSHPS operated in various alternate operation modes are discussed.The results indicate that,for the day-night and short-time interval alternate operation modes without solar energy,the operation time fraction of a solar heat source should be confined to from 50% to 58% when operated in an alternate period of 24 h.Meanwhile,the disadvantages of a natural resumption of soil temperature can be overcome effectively by solar energy filling,and an optimal operation effect can be achieved by integrating the mode of solar energy filling with other alternate modes.In addition,the accuracy of the presented model is verified by the experimental data of borehole wall temperatures.The conclusions can provide a reference for the optimization operation of the SGSHPS. 展开更多
关键词 solar-ground source heat pump alternate operation characteristics numerical simulation experimental validation
暂未订购 下载PDF
Diversity of Arbuscular Mycorrhizal Fungi Associated with Six Rice Cultivars in Italian Agricultural Ecosystem Managed with Alternate Wetting and Drying 认领 引用 被引量：2
19
作者 Veronica VOLPE Franco MAGURNO +2 位作者 Paola BONFANTE Stefano GHIGNONE Erica LUMINI 《Rice science》 SCIE CSCD 2023年第4期348-358,I0028-I0030,共11页
Alternate wetting and drying(AWD)system,in which water has been reduced by approximately 35%with an increased occurrence of beneficial arbuscular mycorrhizal(AM)symbiosis and no negative impact on rice yield,was propo... Alternate wetting and drying(AWD)system,in which water has been reduced by approximately 35%with an increased occurrence of beneficial arbuscular mycorrhizal(AM)symbiosis and no negative impact on rice yield,was proposed to utilize water and nutrients more sustainable.In this study,we selected six rice cultivars(Centauro,Loto,Selenio,Vialone nano,JSendra and Puntal)grown under AWD conditions,and investigated their responsiveness to AM colonization and how they select diverse AM taxa.In order to investigate root-associated AM fungus communities,molecular cloning-Sanger sequencing on small subunit rDNA data were obtained from five out of the six rice cultivars and compared with Next Generation Sequencing(NGS)data,which were previously obtained in Vialone nano.The results showed that all the cultivars were responsive to AM colonization with the development of AM symbiotic structures,even if with differences in the colonization and arbuscule abundance in the root systems.We identified 16 virtual taxa(VT)in the soil compartment and 7 VT in the root apparatus.We emphasized that the NGS analysis gives additional value to the results thanks to a more in-depth reading of the less represented AM fungus taxa. 展开更多
关键词 alternate wetting and drying system arbuscular mycorrhizal fungi rice molecular diversity virtual taxa
暂未订购 下载PDF
Field performance of alternate wetting and drying furrow irrigation on tomato crop growth, yield, water use efficiency, quality and profitability 认领 引用 被引量：10
20
作者 Khokan Kumer Sarker M.A.R.Akanda +3 位作者 S.K.Biswas D.K.Roy A.Khatun M.A.Goffar 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2016年第10期2380-2392,共13页
Sustainable irrigation method is now essential for adaptation and adoption in the areas where water resources are limited. Therefore, a field experiment was conducted to test the performance of alternate wetting and d... Sustainable irrigation method is now essential for adaptation and adoption in the areas where water resources are limited. Therefore, a field experiment was conducted to test the performance of alternate wetting and drying furrow irrigation（AWDFI） on crop growth, yield, water use efficiency（WUE）, fruit quality and profitability analysis of tomato. The experiment was laid out in randomized complete block design with six treatments replicated thrice during the dry seasons of 2013-2014 and 2014-2015. Irrigation water was applied through three ways of furrow： AWDFI, fixed wetting and drying furrow irrigation（FWDFI） and traditional（every） furrow irrigation（TFI）. Each irrigation method was divided into two levels： irrigation up to 100 and 80% field capacity（FC）. Results showed that plant biomass（dry matter） and marketable fruit yield of tomato did not differ significantly between the treatments of AWDFI and TFI, but significant difference was observed in AWDFI and in TFI compared to FWDFI at same irrigation level. AWDFI saved irrigation water by 35 to 38% for the irrigation levels up to 80 and 100% FC, compared to the TFI, respectively. AWDFI improved WUE by around 37 to 40% compared to TFI when irrigated with 100 and 80% FC, respectively. Fruit quality（total soluble solids and pulp） was found greater in AWDFI than in TFI. Net return from AWDFI technique was found nearly similar compared to TFI and more than FWDFI. The benefit cost ratio was viewed higher in AWDFI than in TFI and FWDFI by 2.8, 8.7 and 11, 10.4% when irrigation water was applied up to 100 and 80% FC, respectively. Unit production cost was obtained lower in AWDFI compared to TFI and FWDFI. However, AWDFI is a useful water-saving furrow irrigation technique which may resolve as an alternative choice compared with TFI in the areas where available water and supply methods are limited to irrigation. 展开更多
关键词 alternate furrow irrigation alternate drying process tomato yield quality water use efficiency net return
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 2 … 101 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈