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Growth of Kentucky Bluegrass as Influenced by Nitrogen and Trinexapacethyl

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Agricultural Sciences in China 2009年第12期8卷 1498-1502页

作者： WANG Xiao-ying hu tian-ming WANG Quan-zhen tian Li-min ZHANG Xiao-ling tian Kai College of Animal Science and Technology Northwest A&F University Yangling 712100 PR.China Tangshan Teacher's College Tangshan 063000 P.R. China Tangshan Nanhu International Golf Club Tangshan 063000 P.R.China

The experiment aimed to evaluate the effects of N and trinexapac-ethyl （TE） to the growth of Kentucky bluegrass. By using the method of randomized blocks design, 4 N levels, 0 （N1）, 20 （N2）, 25 （N3）, and 30 （N4） kg N ha t mon% with TE at 0 （T1）, 312.5 （T2） and 625 （T3） mL ha-1 every 10 d effect on the total height, clippings and chlorophyll concentration of Kentucky bluegrass were evaluated. Results showed that total height and total clippings of Kentucky bluegrass were reduced by treating with TE and increased by treating with N. Kentucky bluegrass treated with 312.5 and 625 mL ha ＇ per 10 d had total clippings and total height reduced 30 and 45% under different N application level. The N × TE interaction was significant for the chlorophyll concentration of Kentucky bluegrass. The chlorophyll concentration of Kentucky bluegrass treated with TE at 625 mL ha-1 every 10 d was significantly higher than that of Kentucky bluegrass treated with 312.5 mL ha-1 every 10 d at the same N level. The chlorophyll concentration of turfgrass treated with TE at 625 mL ha-1 every 10 d receiving 30 kg N ha -1 month-1 was the highest. Based on the index of turf growth and the chlorophyll concentration, turfgrass receiving 20 or 30 kg N ha-1 month-1 with 625 mL TE ha i every 10 d could balance the problem of mowing frequency and growth quickly while keeping a good quality.

关键词： N fertilizer trinexapac-ethyl Kentucky bluegrass

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论西北天然草地保护对策与技术

干旱地区农业研究 2001年第2期19卷 122-126页

作者：呼天明西北农林科技大学陕西杨凌712100

中国西北地区的广阔草原约为 1 .2亿 hm2 ,占我国北方天然草地总面积的50 % ,是我国畜牧业的主要基地之一。由于过分地注重牲畜头数的增加 ,草原退化日趋严重。保护西北的天然草地 ,实现其合理利用 ,基本对策为 :1 .稳定牲畜头数 ,提高... 详细信息

中国西北地区的广阔草原约为 1 .2亿 hm2 ,占我国北方天然草地总面积的50 % ,是我国畜牧业的主要基地之一。由于过分地注重牲畜头数的增加 ,草原退化日趋严重。保护西北的天然草地 ,实现其合理利用 ,基本对策为 :1 .稳定牲畜头数 ,提高牲畜群体质量 ,以质定数 ;2 .施行季节畜牧业 ,实现草畜平衡 ,逐步建立牧区繁殖—农区肥育的新体系 ;3.进一步加强草地建设的投资 ;4.封育改良相结合 ,实行大范围的轮封轮牧制度 ;5.解决实现上述对策的关键问题与技术。

关键词：天然草地保护对策中国西北地区

Recycling Fe and improving organic pollutant removal via in situ forming magnetic core-shell Fe_(3)O_(4)@CaFe-LDH in Fe(Ⅱ)-catalyzed oxidative wastewater treatment

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Journal of Environmental Sciences 2025年第1期147卷 523-537页

作者： Ting He Jie Sun Liangwei Deng Jialin ming Changwei hu Key Laboratory of Green Chemistry and Technology Ministry of EducationCollege of ChemistrySichuan UniversityChengdu 610064China Biogas Institute of Ministry of Agriculture and Rural Affairs Chengdu 610041China Inner Mongolia Key Laboratory of Fine Organic Synthesis Inner Mongolia UniversityHohhot 010021China

Due to its high efficiency,Fe(Ⅱ)-based catalytic oxidation has been one of the most popular types of technology for treating growing organic pollutants.A lot of chemical Fe sludge alongwith various refractory pollutantswas concomitantly produced,whichmay cause secondary environmental problemswithout proper *** here innovatively proposed an effective method of achieving zero Fe sludge,reusing Fe resources(Fe recovery=100%)and advancing organics removal(final TOC removal>70%)simultaneously,based on the in situ formation of magnetic Ca-Fe layered double hydroxide(Fe_(3)O_(4)@CaFe-LDH)***(Ca^(2+)and Fe^(3+))concentration(≥30 mmol/L)and their molar ratio(Ca:Fe≥1.75)were crucial to the success of the *** nano Fe_(3)O_(4)was designed to be involved in the Fe(Ⅱ)-catalytic wastewater treatment process,and was modified by oxidation intermediates/products(especially those with COO-structure),which promoted the co-precipitation of Ca^(2+)(originated from Ca(OH)_(2)added after oxidation process)and byproduced Fe^(3+)cations on its surface to in situ generate core-shell Fe_(3)O_(4)@*** oxidation products were further removed during Fe_(3)O_(4)@CaFe-LDH material formation via intercalation and *** applicable to many kinds of organicwastewater,such as bisphenol A,methyl orange,humics,and biogas *** prepared magnetic and hierarchical CaFe-LDH nanocomposite material showed comparable application performance to the recently reported *** work provides a new strategy for efficiently enhancing the efficiency and economy of Fe(Ⅱ)-catalyzed oxidative wastewater treatment by producing high value-added LDHs materials.

关键词： CaFe layered double hydroxide Fe(Ⅱ)-catalytic oxidation Fe recycling Magnetic nanomaterial in situ formation Fe_(3)O_(4)modification

Identification of transcription factors contributing to vitamin C synthesis during Rosa roxburghii fruit development by integrating transcriptomics and metabolomics

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Horticultural Plant Journal 2025年第1期11卷 123-132页

作者： Liyao Su tian Zhang Zong-ming(Max)Cheng State Key Laboratory of Crop Genetics and Germplasm Enhancement College of HorticultureNanjing Agricultural UniversityNanjingJiangsu 210095China

Ascorbic acid, also referred to as vitamin C(Vc), is an important nutrient found in fruits and vegetables that promotes produce quality and human health. Rosa roxburghii is an underutilized natural fruit that contains very high levels of Vc. However, the Vc content of R. roxburghii varies considerably during plant development and ripening. To better understand the molecular mechanisms that underlie fluctuations in Vc content of R. roxburghii fruit at different developmental stages, we performed transcriptomic and metabolomic analyses and identified two significant gene networks/modules and 168 transcription factors directly involved in Vc synthesis. Promoter analysis of two core genes involved in Vc synthesis, RrGGP and RrGalUR, revealed the presence of a retroviral long terminal repeat(LTR) insert in the RrGalUR promoter. Using yeast one-hybrid and dual-luciferase assays, we demonstrated that the transcription factors RrHY5H and RrZIP9 bind to the promoter of RrGGP to promote its expression. RrZIP6 and RrWRKY4 bind to the LTR in the RrGalUR promoter to promote its expression. Our results reveal a molecular mechanism that controls Vc synthesis and accumulation in R. roxburghii fruit.

关键词： Rosa roxburghii Vitamin C WGCNA Transcriptome Metabolome

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用于组合梁桥面板湿接缝的弧形钢筋连接构造

中国公路学报 2017年第9期30卷 86-92页

作者：苏庆田胡一鸣田乐曾明根同济大学土木工程学院上海200092

针对组合梁桥中预制桥面板在湿接缝处的受力特点和现有接缝处钢筋的连接形式,提出了一种构造简单、施工方便的新型的弧形钢筋连接构造。为了检验这种连接构造的力学性能,对其进行足尺模型的轴心受拉试验,并与现有的直钢筋连接方式和U形... 详细信息

针对组合梁桥中预制桥面板在湿接缝处的受力特点和现有接缝处钢筋的连接形式,提出了一种构造简单、施工方便的新型的弧形钢筋连接构造。为了检验这种连接构造的力学性能,对其进行足尺模型的轴心受拉试验,并与现有的直钢筋连接方式和U形钢筋连接方式的力学性能进行试验对比,分析了3种湿接缝的开裂荷载、极限荷载、裂缝分布等。试验结果表明:弧形钢筋连接方式与直钢筋连接方式以及U形钢筋连接方式的湿接缝破坏形式相同,均是首先在干湿混凝土交界面上出现裂缝,3种钢筋连接方式的湿接缝对应的开裂荷载基本相同;随着荷载增加旧裂缝宽度增加、新裂缝相继出现,最后达到受拉极限状态时3种钢筋连接方式的湿接缝都是干湿混凝土交界面附近的钢筋达到屈服,此时接缝中部钢筋的应变为交界面处钢筋应变的1/2,且弧形钢筋连接方式湿接缝的抗拉极限承载力比其他2种略高;理论上在湿接缝区域中弧形钢筋连接方式的湿接缝其钢筋在厚度方向分布更加均匀,能在一定程度上提高承载力,通过试验也证实了在控制混凝土裂缝宽度和试件的承载力方面弧形钢筋连接方式的湿接缝比其他2种连接方式略优,因此弧形筋连接方式运用于实际工程中是可行和可靠的。

关键词：桥梁工程湿接缝试验研究弧形筋抗拉性能组合结构

Armoring hydrophilic wood-structured ultrathick electrode with bimetallic nitride enables high energy-density supercapacitor

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Green Energy & Environment 2025年第2期10卷 345-357页

作者： Nannan ming Jikun Xu Jingfang Lei Cankun hu Kaifu huo Institute of Advanced Materials and Nanotechnology School of Chemistry and Chemical EngineeringWuhan University of Science and TechnologyWuhan430081China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan430074China

Thick electrodes can reduce the ratio of inactive constituents in a holistic energy storage system while improving energy and power ***,traditional slurry-casting electrodes induce high-tortuous ionic diffusion routes that directly depress the capacitance with a thickening *** overcome this,a novel 3D low-tortuosity,self-supporting,wood-structured ultrathick electrode(NiMoN@WC,a thickness of~1400 mm)with hierarchical porosity and artificial array-distributed small holes was constructed via anchoring bimetallic nitrides into the monolithic wood *** the embedded NiMoN nanoclusters with well-designed geometric and electronic structure,the vertically low-tortuous channels,enlarged specific surface area and pore volume,superhydrophilic interface,and excellent charge conductivities,a superior capacitance of NiMoN@WC thick electrodes(~5350 mF cm^(-2)and 184.5 F g^(-1))is achieved without the structural *** especial,monolithic wood carbons with gradient porous network not only function as the high-flux matrices to ameliorate the NiMoN loading via cell wall engineering but also allow fully-exposed electroactive substance and efficient current collection,thereby deliver an acceptable rate capability over 75%retention even at a high sweep rate of 20 mA cm^(-2).Additionally,an asymmetric NiMoN@WC//WC supercapacitor with an available working voltage of 1.0-1.8 V is assembled to demonstrate a maximum energy density of~2.04 mWh cm^(-2)(17.4 Wh kg^(-1))at a power density of 1620 mW cm^(-2),along with a decent long-term lifespan over 10,000 charging-discharging *** a guideline,the rational design of wood ultrathick electrode with nanostructured transition metal nitrides sketch a promising blueprint for alleviating global energy scarcity while expanding carbon-neutral technologies.

关键词： Wood-structured thick electrode Supercapacitors Transition metal nitrides Low tortuosity

无菌培养条件下8个紫花苜蓿品种的苗期耐盐性研究

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西北农林科技大学学报（自然科学版） 2010年第4期38卷 176-182页

作者：彭湖代锦呼天明西北农林科技大学动物科技学院陕西杨凌712100 西北农林科技大学植物保护学院陕西杨凌712100

【目的】探讨8个紫花苜蓿品种的耐盐性，为盐碱地改良与利用选择适宜的苜蓿品种。[方法】以8个紫花苜蓿品种种子为材料，在组织培养条件下，观测8个品种在不同浓度NaCI（MS培养基中NaCl浓度分别为0，50，85，120，170mmol／L）胁迫下的... 详细信息

【目的】探讨8个紫花苜蓿品种的耐盐性，为盐碱地改良与利用选择适宜的苜蓿品种。[方法】以8个紫花苜蓿品种种子为材料，在组织培养条件下，观测8个品种在不同浓度NaCI（MS培养基中NaCl浓度分别为0，50，85，120，170mmol／L）胁迫下的发芽率、单株鲜质量、根长、苗高以及游离脯氨酸含量的变化，并对其耐盐性进行综合评价。【结果】低浓度（50mmol／L）NaCl处理对紫花苜蓿的萌发和生长具有促进作用；随着NaCI浓度（85～170mmol／L）的升高，紫花苜蓿的发芽率和生长受到明显抑制，表现为相对发芽率、相对根长、相对苗高以及相对单株鲜质量明显下降，而游离脯氨酸含量明显升高。8个紫花苜蓿品种耐盐性的综合排序及其得分为“金皇后”（3．095）〉“巨人201”（2．467）〉“三得利”（2．379）〉“阿尔冈金”（2．369）〉“保定”（2．077）〉“中苜1号”（1．474）〉“敖汉”（0．885）〉“WL-232”（0．310）。【结论】“金皇后”是耐盐性最高的紫花苜蓿品种，适宜在土壤盐碱含量较高的地区种植；而耐盐性最差的是“敖汉”和“WL-232”，盐碱地应尽量避免选种这2个品种。

关键词：紫花苜蓿组织培养耐盐性综合评价

A cationic radical lanthanide organic tetrahedron with remarkable coordination enhanced radical stability

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Chinese Chemical Letters 2025年第2期36卷 568-573页

作者： Zhengzhong Zhu Shaojun hu Zhi Liu Lipeng Zhou Chongbin tian Qingfu Sun State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences University of the Chinese Academy of Sciences

Rare–earth supramolecular compounds, such as lanthanide organic polyhedrons（LOPs）, are of particular interest due to their many possible applications in various fields. Here we report the first syntheses of Ln4(L·+)4–type(Ln, lanthanides; L·+, radical ligand) radical–bridged lanthanide organic tetrahedrons by self–assembly of face–capping triphenylamine（TPA）–cored radical ligand with different lanthanide *** coordination enhanced radical stability has been observed, with half–life times(t1/2) for L1·+,La4(L1·+)4, Eu4(L1·+)4, Gd4(L1·+)4, Tb4(L1·+)4and Lu4(L1·+)4estimated to be 53 min, 482 min, 624 min,1248 min, 822 min and 347 min, respectively. The TPA radical in Ln4(L1·+)4containing paramagnetic Ln ions（Ln = EuⅢ, GdⅢand TbⅢ） is observed to be more stable than that in Ln4(L1·+)4（Ln = LaⅢand LuⅢ）constructed by diamagnetic Ln ions. This difference in radical stability is possibly due to the magnetic interactions between paramagnetic LnⅢions and L1·+ligands, as confirmed by electron paramagnetic resonance（EPR） in La4（L）4(L = L1and L1·+) and Tb4（L）4(L = L1and L1·+), and magnetic susceptibility measurements in Tb·4（L）4(L = L1and L1·+). Our study reveals the coordination of radical ligands with lanthanide ions can improve the radical stability, which is crucial for their applications.

关键词： Enhanced stability Lanthanide organic polyhedrons Radical Self–assembly Supramolecular chemistry

Efficient implementation of quantum permutation algorithm using a polar SrO molecule in pendular states

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Communications in Theoretical Physics 2025年第2期77卷 41-53页

作者： Jie-Ru hu Zuo-Yuan Zhang Jin-ming Liu State Key Laboratory of Precision Spectroscopy School of Physics and Electronic Science East China Normal University School of Physical Science and Technology Yangzhou University Chongqing Key Laboratory of Precision Optics Chongqing Institute of East China Normal University

Quantum algorithms offer more enhanced computational efficiency in comparison to their classical counterparts when solving specific tasks. In this study, we implement the quantum permutation algorithm utilizing a polar molecule within an external electric field. The selection of the molecular qutrit involves the utilization of field-dressed states generated through the pendular modes of SrO. Through the application of multi-target optimal control theory, we strategically design microwave pulses to execute logical operations, including Fourier transform,oracle Ufoperation, and inverse Fourier transform within a three-level molecular qutrit *** observed high fidelity of our outcomes is intricately linked to the concept of the quantum speed limit, which quantifies the maximum speed of quantum state manipulation. Subsequently,we design the optimized pulse sequence to successfully simulate the quantum permutation algorithm on a single SrO molecule, achieving remarkable fidelity. Consequently, a quantum circuit comprising a single qutrit suffices to determine permutation parity with just a single function evaluation. Therefore, our results indicate that the optimal control theory can be well applied to the quantum computation of polar molecular systems.

关键词： polar molecule optimal control quantum permutation algorithm pendular states