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Synthesis and Crystal Structure of a Sodium Monosulfuron-ester (N-[2'-(4-Methyl)pyrimidinyl]-2-carbomethoxy Benzyl Sulfonylurea Sodium)

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Chinese Journal of Structural Chemistry 2006年第11期25卷 1414-1417页

作者： KOU jun-jie li Zheng-Ming SONG Hai-Bin National Pesticide Engineering Research Center State Key Laboratory of Elemento-organic Chemistry Nankai University Tianjin 300071 China

Monosulfuron-ester is a novel sulfonylurea herbicide with ultra-low dosage Herein sodium monosulfuron-ester was synthesized and its crystal structure was determined by X-ray diffraction method. The title compound belongs to monoclinic, space group P21/c with a = 9.335（5）, b = 20.632（12）, c = 13.853（8） A, β = 107.193（9）°, Mr = 487.46, Z = 4, Dc = 1.270 g/cm^3, μ = 0.293 mm^-1, F（000） = 1015, R = 0.0859 and wR = 0.2633. In the title compound, Na coordinates with N（1）, O（1） and O（3） from one monosulfuron-ester molecule, N（4A） and O（5A） from the other monosulfuron-ester molecule and one oxygen atom from DMSO to give six coordination bonds.

关键词： sulfonylurea sodium monosulfuron-ester crystal structure

In situ two-step electrochemical preparation of fluoride-free nickel-based compound film on nickel plate for supercapacitors

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Rare Metals 2016年第12期35卷 930-936页

作者： Zhi-Biao Zou Xin-Bo Xiong jun Ma Xie-Rong Zeng Tuo Huang jun-jie li Bin li Shenzhen Key Laboratory of Special Functional Materials Department of Materials Science and EngineeringShenzhen University

A nickel-based compound layer was prepared on a nickel plate by anodization in a 75 wt% H3PO4 solution containing NH4F. This layer was then treated by galvanostatic charge/discharge （GCD） until a black outer layer was detached, leaving behind a film on the nickel plate as a binder-free electrode material for supercapacitors. The microstructural characterization shows that the film consists of Ni（OH）2 and NiO, and no fluoride is found in the as-obtained film. Electrochemical tests demonstrate that this fluoride-free film electrode exhibits a high capacitance of 954 F·g^-1 at 7.5 A·g^-1, excellent rate capability （a 19.5 % capacitance reduction with the current density increasing to 120 A.g-1） and cycling stability. Within 3500 cycles, the specific capacitance does not decrease, but rather increases from 840 F·g^-1 to approximately 1092 F·g^-1 in the first 100 cycles at 60 A·g^-1, and remains stable until the aforementioned layer is detached.

关键词： Nickel Film Anodization Supercapacitor

Tailoring microstructures of CoCrFeNiNb_(0.25)hypoeutectic high-entropy alloy by hot deformation

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Rare Metals 2022年第6期41卷 2028-2037页

作者： Xiao-Rong liu Feng He jun-jie li Ying-Ying Dang Zhi-jun Wang Jin-Cheng Wang School of Materials Scienceand Engineering Northwestern Polytechnical UniversityXi'an710072China Thermal Power Research Institute Xi'an710054China

CoCrFeNiNb_(0.25)hypoeutectic high-entropy alloy(HEA)has shown good mechanical ***,due to interdendritic eutectics,it is challenging to further optimize the microstructure through cold rolling and *** current study showed that hot defor-mation effectively tailored the hypoeutectic *** investigated the hot deformation behavior and microstructure evolution of the dual-phase CoCrFe-NiNb_(0.25) HEA at different temperatures from 800 to 1000℃and different strain rates from 0.01 to 10.00 s^(-1).The systematic investigation showed the deformation activation energy around 500 kJ·mol^(-1).Microstructure with refined grains and uniformly distributed Laves phases can be obtained after 70%compression at 900℃with a strain rate of 0.01 s^(-1).

关键词： Hot deformation High-entropy alloy Microstructure evolution

Effect of Mo Addition on Corrosion Behavior of High-Entropy Alloys CoCrFeNiMo_x in Aqueous Environments

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Acta Metallurgica Sinica(English Letters) 2019年第1期32卷 41-51页

作者： Xu-liang Shang Zhi-jun Wang Qing-Feng Wu Jin-Cheng Wang jun-jie li Jia-Kang Yu State Key Laboratory of Solidification Processing Northwestern Polytechnical University

The corrosion behavior of CoCrFeNiMo_x alloys was investigated in aqueous environments, NaCl and H_2SO_4 solutions,respectively, to simulate typical neutral and acidic conditions. The cyclic polarization curves in NaCl and the potentiodynamic curves in H_2SO_4 clearly reveal the beneficial effects of Mo and the detrimental effect of σ-phase on the corrosion resistance. The X-ray photoelectron spectroscopy results of CoCrFeNiMo_x alloys in H_2SO_4 solution indicate that Cr and Mo predominate the corroded surface of the alloys, where Mo primarily exists in the form of MoO_3.

关键词： High-entropy alloys Corrosion σ-phase Molybdenum

Effect of interface anisotropy on tilted growth of eutectics:A phase field study

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Chinese Physics B 2022年第10期31卷 563-571页

作者： Mei-Rong Jiang jun-jie li Zhi-jun Wang Jin-Cheng Wang State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China

Interfacial energy anisotropy plays an important role in tilted growth of eutectics. However, previous studies mainly focused on the solid-solid interface energy anisotropy, and whether the solid-liquid interface energy anisotropy can significantly affect the tilted growth of eutectics still remains unclear. In this study, a multi-phase field model is employed to investigate both the effect of solid-liquid interfacial energy anisotropy and the effect of solid-solid interfacial energy anisotropy on tilted growth of eutectics. The findings reveal that both the solid-liquid interfacial energy anisotropy and the solid-solid interfacial energy anisotropy can induce the tilted growth of eutectics. The results also demonstrate that when the rotation angle is within a range of 30°-60°, the growth of tilted eutectics is governed jointly by the solid-solid interfacial energy anisotropy and the solid-liquid interfacial energy anisotropy;otherwise, it is mainly controlled by the solid-solid interfacial energy anisotropy. Further analysis shows that the unequal pinning angle at triple point caused by the adjustment of the force balance results in different solute-diffusion rates on both sides of triple point. This will further induce an asymmetrical concentration distribution along the pulling direction near the solid-liquid interface and the tilted growth of eutectics. Our findings not only shed light on the formation mechanism of tilted eutectics but also provide theoretical guidance for controlling the microstructure evolution during eutectic solidification.

关键词： tilted eutectics interfacial energy anisotropy multi-phase field model

Scopolamine causes delirium-like brain network dysfunction and reversible cognitive impairment without neuronal loss

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Zoological Research 2023年第4期44卷 712-724页

作者： Qing Wang Xiang Zhang Yu-jie Guo Ya-Yan Pang jun-jie li Yan-li Zhao jun-Fen Wei Bai-Ting Zhu Jing-Xiang Tang Yang-Yang Jiang jie Meng Ji-Rong Yue Peng Lei Department of Geriatrics and State Key Laboratory of Biotherapy National Clinical Research Center for GeriatricsWest China HospitalSichuan UniversityChengduSichuan 610041China Pediatric Research Institute Ministry of Education Key Laboratory of Child Development and DisordersNational Clinical Research Center for Child Health and DisordersChongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory DisordersChildren's Hospital of Chongqing Medical UniversityChongqing 400014China

Delirium is a severe acute neuropsychiatric syndrome that commonly occurs in the elderly and is considered an independent risk factor for later ***,given its inherent complexity,few animal models of delirium have been established and the mechanism underlying the onset of delirium remains ***,we conducted a comparison of three mouse models of delirium induced by clinically relevant risk factors,including anesthesia with surgery(AS),systemic inflammation,and neurotransmission *** found that both bacterial lipopolysaccharide(LPS)and cholinergic receptor antagonist scopolamine(Scop)induction reduced neuronal activities in the delirium-related brain network,with the latter presenting a similar pattern of reduction as found in delirium ***,Scop injection resulted in reversible cognitive impairment with hyperactive *** loss of cholinergic neurons was found with treatment,but hippocampal synaptic functions were *** findings provide further clues regarding the mechanism underlying delirium onset and demonstrate the successful application of the Scop injection model in mimicking delirium-like phenotypes in mice.

关键词： Delirium Scopolamine Cholinergic neuron Neuronal activity Brain network

Field Study on Indoor Thermal and Luminous Environment in Winter of Vernacular Houses in Northern Hebei Province of China

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Journal of Harbin Institute of Technology(New Series) 2014年第4期21卷 77-83页

作者： Shi-Meng Hao Ye-Hao Song jun-jie li Ning Zhu School of Architecture Tsinghua University Key Laboratory of Eco Planning & Green Building Ministry of EducationTsinghua University

In this paper,a climate-adaptation study of vernacular houses in northern Hebei Province has been conducted based on quantitative field surveys. Three typical vernacular houses with different kinds of building envelopes were selected. The field surveys included investigation on building material and construction,measurement of indoor thermal environment, infrared thermographic study of building envelopes and measurement of luminous environment. The results showed that the indoor air temperatures were below thermal comfort zone from late night till early morning and the horizontal temperature gradient was obvious. The adobe wall showed better thermal performance than the other two. As for the building layout,it is beneficial to put a storeroom on the north side of the house as a temperature buffer zone. Furthermore,due to missing insulation and the informal process of construction,significant amounts of heat escaped from building envelopes,especially from the corner of wall,ceiling and around the openings. The daylight factors on the work plan in the main rooms were accordance with design standards and the level of illuminance met the requirements of family's daily activities.

关键词： thermal environment luminous environment vernacular houses sever cold zone

Effect of Different Shear Modes on Morphology and Mechanical Properties of Polypropylene Pipes Produced by Rotational Shear

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Chinese Journal of Polymer Science 2020年第12期38卷 1392-1402页

作者： Wei-Chen Zhou Zu-Chen Du Hao Yang jun-jie li Ying Zhang Xue-Qin Gaoi Qiang Fu College of Polymer Science and Engineeing Sichuan University Chengdu 610065China

Oriented “shish-kebab” structures could be obtained by shearing to enhance the mechanical properties of polymer samples ***,the effect of shear mode on mechanical properties is still *** study of stepped hoop shear field on the isotactic polypropylene(iPP)pipe was developed through applying a self-designed rotational shear system(RSS).The effect of stepped shear field on the microstructure and comprehensive properties of iPP pipe was investigated by the comparison with continuous *** could be found that the loosely-assembled shish-kebabs with the larger size were formed in the continuous shear pipes,but the smaller and tightly-stacked ones existed in the pipes with stepped ***,due to differential morphologies under different shear modes,better comprehensive mechanical properties were obtained in the pipes with stepped shear.

关键词： PP pipe Shish-kebab Rotational Shear Shear mode

Fieldwork Test Research of the Impact on Building Physical Environment on Six Types of Atrium Space in Cold Climates

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Journal of Harbin Institute of Technology(New Series) 2014年第4期21卷 84-90页

作者： Ye-Hao Song jun-jie li Ning Zhu Jia-liang Wang Zheng-Hao lin School of Architecture Tsinghua University Key Laboratory of Urban-Rural Eco Planning & Green Building Ministry of EducationTsinghua University

Since the research on verification to passive design strategies in sustainable building is at the initial stage,and its test method and verification conclusion are not scientific enough to validate,this paper proposes the necessity of building physical environmental monitoring to quantitative optimization of passive strategies efficiency from the perspective of architecture design and building environment. Adopting comparative research method,this research chooses six types of atrium space in cold climate in China as a prototype,focusing on building physical environmental performance difference in and between atrium and building main space. Spatial parameters of the atrium space will be divided into four factors: spatial geometry,interfacial properties,internal and external related categories. With subdividing these four factors into sub-factors,this paper makes crosscomparison among the sub-factors to clarify passive strategies effectiveness in atrium. Data comparison analysis shows that Winter atrium passive strategy in cold regions from traditional view is not obvious in practical application,and test data need to be stratified refined in atrium design in case of optimizing passive strategy from building prototype perspective.

关键词： atrium space building physical environment fieldwork test space effect