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Yield performance and optimal nitrogen and phosphorus application rates in wheat and faba bean intercropping

Journal of Integrative Agriculture 2021年第11期20卷 3012-3025页

作者： XIAO Jing-xiu ZHU Ying-an BAI wen-lian liU Zhen-yang TANG li ZHENG Yi College of Resources and Environment Yunnan Agricultural UniversityKunming 650201P.R.China College of Horticulture and Landscape Yunnan Agricultural UniversityKunming 650201P.R.China Yunnan Open University Kunming 650223P.R.China

Yield performance in cereal and legume intercropping is related to nutrient management,however,the yield response of companion crops to nitrogen(N)input is inconclusive and only limited efforts have focused on rationed phosphorous(P)*** this study,two multi-year field experiments were implemented from 2014-2019 under identical *** factors in a randomized complete block design were adopted in both *** field experiment 1,the two factors included three planting patterns(mono-cropped wheat(MW),mono-cropped faba bean(MF),and wheat and faba bean intercropping(W//F))and four N application rates(N0,0 kg N ha^(-1);N1,90 and 45 kg N ha^(-1) for wheat and faba beans,respectively;N2,180 and 90 kg N ha^(-1) for wheat and faba beans,respectively;and N3,270 and 135 kg N ha^(-1) for wheat and faba beans,respectively).In field experiment 2,the two factors included three P application rates(P0,0 kg P_(2)O_(5) ha^(-1);P1,45 kg P_(2)O_(5) ha^(-1);and P2,90 kg P_(2)O_(5) ha^(-1))and the same three planting patterns(MW,MF,and W//F).The yield performances of inter-and mono-cropped wheat and faba beans under different N and P application rates were analyzed and the optimal N and P rates for intercropped wheat(IW)and MW were *** results revealed that intercropping favored wheat yield and was adverse to faba bean *** yield increased by 18-26%,but faba bean yield decreased by 5-21% in W//F compared to MW and MF,*** stimulated IW yield drove the yield advantage in W//F with an average land equivalent ratio(LER)of 1.12.N and P fertilization benefited IW yield,but reduced intercropped faba bean(IF)***,the partial LER of wheat(pLER_(wheat))decreased with increasing N application rates,and the partial LER of faba bean(pLER_(faba bean))decreased with increasing P application ***,LER decreased as N input increased and tended to decline as P rates *** maintained a similar yield as MW,even under reduced 40

关键词： land equivalent ratio nitrogen and phosphorus optimal application rate wheat and faba bean intercropping yield performance

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硫化锌法原子吸收间接测定谷氨酸锌络合物稳定常数

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光谱学与光谱分析 2005年第6期25卷 968-970页

作者：刘文涵张丹李祖光王丽丽浙江工业大学化学工程学院浙江杭州310014

在利用硫化锌法火焰原子吸收间接测定谷氨酸或谷氨酸钠,并对测定机理、络合物组成探讨的基础上,进一步对在最佳测定酸度条件下,所形成的络合物谷氨酸锌的稳定常数,进行了测定和求解获得了成功,在pH 9 0时的碱式谷氨酸锌的稳定常数在3 3... 详细信息

在利用硫化锌法火焰原子吸收间接测定谷氨酸或谷氨酸钠,并对测定机理、络合物组成探讨的基础上,进一步对在最佳测定酸度条件下,所形成的络合物谷氨酸锌的稳定常数,进行了测定和求解获得了成功,在pH 9 0时的碱式谷氨酸锌的稳定常数在3 3×10 2 0 ～1 4×10 2 1 ,平均值为β稳=1 0 3×10 2 1 ,其logβ稳=2 1 0 13。谷氨酸锌的稳定常数在3 3×10 1 0 ～1 4×10 1 1 ,平均值为β稳=1 0 3×10 1 1 ,其logβ稳=11 0 13。

关键词：火焰原子吸收光谱法谷氨酸锌间接测定络合平衡稳定常数

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Strong coupling superconductivity and prominent superconducting fluctuations in the new superconductor Bi_4O_4S_3

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Science China(Physics,Mechanics & Astronomy) 2013年第11期56卷 2019-2025页

作者： li Sheng YANG Huan FANG DeLong WANG ZhenYu TAO Jian DING XiaXin wen HaiHu Center for Superconducting Physics and Materials National Laboratory of Solid State Microstructures and Department of PhysicsNanjing University National Laboratory for Superconductivity Institute of Physics and National Laboratory for Condensed Matter PhysicsChinese Academy of Sciences

Electric transport and scanning tunneling spectrum(STS)have been investigated on polycrystalline samples of the new superconductor Bi4O4S3.A weak insulating behavior in the resistive curve has been induced in the normal state when the superconductivity is suppressed by applying a magnetic ***,a kink appears on the temperature dependence of resistivity near 4 K at all high magnetic fields above 1 T when the bulk superconductivity is completely *** kink associated with the upper critical field as well as the wide range of excess conductance at low fields and high temperatures is explained as the possible evidence of strong superconducting *** the tunneling spectra,a superconducting gap of about 3 meV is frequently observed yielding a ratio of 2Δ/kB TC^*** value is much larger than the one predicted by the BCS theory in the weak coupling regime(2Δ/kB TC^3.53),which suggests the strong coupling superconductivity in the present ***,the gapped feature persists on the spectra until 14 K in the STS measurement,which suggests a prominent fluctuation region of *** a superconducting fluctuation can survive at very high magnetic fields,which are far beyond the critical fields for bulk superconductivity as inferred both from electric transport and tunneling measurements.

关键词： BiS2-based superconductor strong coupling superconductivity superconducting fluctuation

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Electrochemical impedance analysis of nanoporous TiO_2 electrode at low bias potential

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Chinese Chemical Letters 2010年第8期21卷 959-962页

作者： Sheng Jun li Yuan lin Zeng Chen Jing Bo Zhang Xiao wen Zhou College of Physics and Electrics He'nan University Kaifeng 475004 China Beijing National Laboratory for Molecular Sciences Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China

TiO2 colloid was prepared by the sol-gel method and was bladed on transparent conduction glass to made nanoporous electrode. The impedance performance of TiO2 electrode was studied at various bias potential.A simplified equivalent circuit was proposed to investigate the charge transport impedance of TiO2 film and good fitting results were obtained.

关键词： Dye-sensitized solar cell Electrochemical impedance spectroscopy Equivalent circuit Charge transport impedance

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miR-204 suppresses porcine reproductive and respiratory syndrome virus(PRRSV)replication via inhibiting LC3B-mediated autophagy

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Virologica Sinica 2023年第5期38卷 690-698页

作者： Yao Yao Sihan li Yingqi Zhu Yangyang Xu Siyuan Hao Shuyuan Guo wen-Hai Feng State Key Laboratory of Animal Biotech Breeding Frontiers Science Center for Molecular Design BreedingMinistry of Agriculture Key Laboratory of Soil Microbiologyand Department of Microbiology and ImmunologyCollege of Biological SciencesChina Agricultural UniversityBeijing100193China

Porcine reproductive and respiratory syndrome(PRRS)caused by PRRS virus(PRRSV)has been regarded as a persistent challenge for the swine farms ***(miRNAs)play key roles in regulating almost every important biological process,including virus-host *** this study,we found that miR-204 was highly expressed in cells that were not permissive to PRRSV infection compared with cells susceptible to PRRSV ***,we demonstrated that overexpression of miR-204 significantly inhibited PRRSV replication in porcine alveolar macrophages(PAMs).Through bioinformatic analysis,we found that there existed a potential binding site of miR-204 on the 30UTR of microtubule associated protein 1 light chain 3B(MAP1LC3B,LC3B),a hallmark of *** experiments including luciferase reporter assay and UV cross-linking and immunoprecipitation(CliP)assay,we demonstrated that miR-204 directly targeted LC3B,thereby downregulating ***,we investigated the interplay between autophagy and PRRSV replication in PAMs,confirming that PRRSV infection induces autophagy,which in turn facilitates viral ***,we verify that miR-204 suppresses PRRSV replication via inhibiting LC3B-mediated autophagy in *** findings will provide a novel potential approach for us to develop antiviral therapeutic agents and controlling measures for future PRRSV outbreaks.

关键词： Porcine reproductive and respiratory syndrome virus(PRRSV) miR-204 Autophagy LC3B

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Association between the cumulative triglyceride-glucose index and the recurrence of atrial fibrillation after radiofrequency catheter ablation

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Journal of Geriatric Cardiology 2024年第2期21卷 200-210页

作者： Qing YAN Jia-Qi liANG Yi-De YUAN Yuan li Jia-li FAN wen-Huan WU Pan XU Jia-Hong XUE Department of Cardiovascular Medicine the Second Affiliated Hospital of Xi’an Jiaotong UniversityShaanxiChina Department of Cardiovascular Medicine Zichang People’s HospitalShaanxiChina Department of Ultrasound Xijing HospitalAir Force Military Medical UniversityShaanxiChina

BACKGROUND Triglyceride-glucose(TyG)index values are a new surrogate marker for insulin *** study aimed to explore the relationship between cumulative TyG index values and atrial fibrillation(AF)recurrence after radiofrequency catheter ablation(RFCA).METHODS A total of 576 patients with AF who underwent RFCA at the Second Affiliated Hospital of Xi'an Jiaotong University were included in this *** participants were grouped based on cumulative TyG index values tertiles within 3 months after *** regression and restricted cubic spline analyses were used to determine the relationship between cumulative TyG index values and AF *** predictive value of all risk factors was assessed by receiver operating curve *** There were 375 patients completed the study(age:63.23±10.73 years,64.27%male).The risk of AF recurrence increased with increasing cumulative TyG index values *** adjusting for potential confounders,patients in the medium cumulative TyG index group[hazard ratio(HR)=4.949,95%CI:1.778–13.778,P=0.002]and the high cumulative TyG index group(HR=8.716,95%CI:3.371–22.536,Pline regression model also showed an increased risk of AF recurrence with increasing cumulative TyG index *** considering cumulative TyG index values,left atrial diameter,and lactate dehydrogenase levels as a comprehensive factor,the model could effectively predict AF recurrence after RFCA[area under the curve(AUC)=0.847,95%CI:0.797–0.897,P<0.001].CONCLUSIONS Cumulative TyG index values were a risk factor for AF recurrence after *** longitudinal TyG index values may assist with optimized for risk stratification and outcome prediction for AF recurrence.

关键词： atrial fibrillation index

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Fluorescence Properties of Porphyrin Dimers Incorporating an Anhydride linker

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Chemical Research in Chinese Universities 2006年第6期22卷 684-687页

作者： FA Huan-bao YIN Wei ZHENG wen-qi li Di SHAN Ning WANG Xing-qiao College of Chemistry Jilin University Changchun 130023 P. R. China

A preliminary study on a novel free base porphyrin dimer and a zinc prophyrin dimer by comparing their fluorescence properties with those of the corresponding monomers is presented. The fluorescence intensity of the free base dimer is five times higher than that of the monomer, but the fluorescence intensity of the zinc porphyrin dimer is nearly similar to that of the zinc porphyrin monomer. The emission spectra show that energy transfer occurs between the two units.

关键词： Porphyrin dimer Zinc dimer Fluorescence property

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Hydrothermal Synthesis and Crystal Structure of [(CH_3CH_2)_4N]_4[(La_(12)(OH)_(12)MoO_(29) )], A Novel Cluster Compound with a MoO_5 Hexahedron Center Surrounded by La-O Octahedron

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Chemical Research in Chinese Universities 2003年第2期19卷 132-134页

作者： HUChang-wen HUANGWei-tong ZHANGHong WANGXiu-li liYang-guang DUANGli-ying LANYang WANGli WANGEn-bo InstituteofpolyoxometalateChemistry DepartmentofChemistryNortheastNormalUniversityChangchun130024P.R.China TonghuaHigherVocationalEducationInstitute Tonghua134001

A novel compound [(CH 3CH 2) 4N] 4[(La 12 (OH) 12 MoO 29 )] was synthesized by hydrothermal reaction. The single crystal X ray diffraction shows that the compound crystallized in the monoclinic space group C2/c ; a =2 5729(4) nm, b =1 4318(1) nm, c =2 1217(4) nm, β =111 56(1)°, V =6 8235(7) nm 3, Z =4, R =0 0751. The basic building blocks of the crystal structure included one MoO 5 hexahedron and twelve LaO 6 octahedra which shared a common edge to form a [(La 12 (OH) 12 MoO 29 )] 4- unit. These units were held together by the [(CH 3CH 2) 4N] + ions.

关键词： Hydrothermal synthesis Layer Lanthanum Triclinic system

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Isolation and Structural Indentification of Herbicidal Toxin Fractions Produced by Pythium aphanidermatum

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Agricultural Sciences in China 2010年第7期9卷 995-1000页

作者： ZHANG li-hui KANG Zhan-hai XU Jiao XU wen-chao ZHANG Jin-lin College of Plant Protection Agricultural University of Hebei Baoding 071001 P.R. China

In order to understand the compsition and structure of herbicidal component of Pythium aphanidermatum,the isolation and structural indentification were *** culture filtrate was extracted by ethyl acetate,petroleum,and chloroform with the same volume respectively and the activity of the crude toxin was *** toxin was separated by using the method of thin layer chromatography（TLC）,then the main fraction was separated by HPLC,and the structure was analyzed by the sepctrum of IR,13C-NMR and *** results showed that the ethyl acetate extracts had the strongest herbicidal *** the method of TLC,the bioassay results showed that the extracts with Rf 0.19 had the strongest effect on weeds and the inhibition to Digitaria sanguinalis and Amaranthus retroflexus reached five levels,and the component was proved to be dimethyl o-phthalate from the spectrum of IR,13C-NMR and 1HNMR,which was one of the components from the toxin,and it had herbicidal activity.

关键词： Pythium aphanidermatum toxin herbicidal structure identification

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Conservation implications of population genetic structure in a threatened orchid Cypripedium tibeticum

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Plant Diversity 2019年第1期41卷 13-18页

作者： Jian-ling Guo wen-Juan Cao Zhi-Min li Yong-Hong Zhang Sergei Volis life Science Department Yunnan Normal University Kunming Institute of Botany Chinese Academy of Sciences

Cypripedium tibeticum is a threatened orchid which efficient conservation requires knowledge of its extent and structure of genetic variation. Using two chloroplast DNA fragments(rps16 and trnL-F), we analyzed 157 individuals from 9 populations representing the species range in China. Seven haplotypes were identified. C. tibeticum had high total genetic diversity(H_T=0.80) with major contribution to this diversity made by among-population component(G_ST=0.64, Ф_ST= 0.86). However, despite high population differentiation there was no clear phylogeographic structure. The populations CY and DC made the greatest contribution to the total gene diversity as well as allelic richness. The possible mechanisms and implications of these findings for conservation of the species are discussed.

关键词： Cypripedium tibeticum Orchid genetic diversity Population differentiation East Himalaya-Hengduan mountains Conservation strategy

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