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Effects of ultrasonic-assisted extraction on bioactive compounds,volatile flavors and antioxidant activities of vine tea water extracts

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Traditional Medicine Research 2025年第1期10卷 73-81页

作者： Xiao-Long Zhou Wei-jin jiang ji Yu Mao-jun Yao Yun-Tong Li Hunan Provincial Key Laboratory of Research Resource Mining and High-valued Utilization on Edible&Medicinal PlantCollege of Chemistry and Chemical EngineeringJishou UniversityJishou 416000China Hunan Gaoge Dairy Co. Ltd.Changsha 410000China

Background:Ampelopsis grossedentata,vine tea,which is the tea alternative beverages in *** vine tea processing,a large amount of broken tea is produced,which has low commercial ***:This study investigates the influence of different extraction methods(room temperature water extraction,boiling water extraction,ultrasonic-assisted room temperature water extraction,and ultrasonic-assisted boiling water extraction,referred to as room temperature water extraction(RE),boiling water extraction(BE),ultrasonic assistance at room temperature water extraction(URE),and ultrasonic assistance in boiling water extraction(UBE))on the yield,dihydromyricetin(DMY)content,free amino acid composition,volatile aroma components,and antioxidant properties of vine tea ***:A notable influence of extraction temperature on the yield of vine tea extracts(Pmino acids,with L-serine and aspartic acid being the most abundant in the extracts,nevertheless ultrasound-assisted extraction reduced total free amino acid *** chromatography-mass spectrometry analysis demonstrated an increase in the diversity and quantity of compounds in the vine tea water extracts obtained through ultrasonic-assisted ***,69 and 68 volatile compounds were found in URE and UBE extracts,which were higher than the number found in RE and BE *** vitro,antioxidant activity assessments revealed varying antioxidant capacities among different extraction methods,with RE exhibiting the highest DPPH scavenging rate,URE leading in ABTS•+free radical scavenging,and BE demonstrating superior ferric ion reducing antioxidant ***:The findings suggest that extraction methods signi

关键词： vine tea dihydromyricetin ultrasonic-assisted extraction volatile aroma components

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Algebraic Method for Constructing Exact Discrete Soliton Solutions of Toda and mKdV Lattices

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Communications in Theoretical Physics 2008年第6期49卷 1407-1409页

作者： WANG jun-min ji jie School of Information Henan University of Finance and Economics Zhengzhou 450002 China College of Statistics and Mathematics Zhejiang Gongshang University Hangzhou 310018 China

In this paper, with the aid of symbolic computation, we present a new method for constructing soliton solutions to nonlinear differentiM-difference equations. And we successfully solve Toda and mKdV lattice.

关键词： soliton solutions differential-difference equation

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Acute hyperglycemia together with hematoma of high-glucose blood exacerbates neurological injury in a rat model of intracerebral hemorrhage

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Neuroscience Bulletin 2014年第1期30卷 90-98页

作者： Rong-Yi Liu jun-jun Wang Xia Qiu ji-min Wu Department of Neurology Second Affiliated Hospital College of Medicine Zhejiang University Department of Neurology Zhejiang Hospital

Recent evidence suggests that admission hypergly- cemia has deleterious effects on the survival and functional outcome of patients with intracerebral hemorrhage （ICH）. In this study, we first induced acute hyperglycemia in male adult Sprague-Dawley rats by intraperitoneal injection of 50% glucose （6 mL/kg）, and created the ICH model thereafter by delivering autologous whole blood or homologous normal- glucose blood into the right basal ganglia. Twenty- four hours later, we assessed the neurological injury, evaluated the hematoma and brain water content, and investigated autophagy. We found elevations of neurological deficit scores, brain water content, and microtubule-associated protein light chain-3 （LC3） and beclin-1 protein levels, and decreased SQSTM1/ p62 levels after ICH with normal-glucose blood （without hyperglycemia）. Acute hyperglycemia with ICH of high-glucose blood hematoma was associated with significantly increased forelimb-use asymmetry test scores, brain water content and SQSTM1/p62 protein levels, and evident decreases in the ratio of LC3-11/LC3-1 and beclin-1 protein levels. On the other hand, acute hyperglycemia and ICH with normal- glucose blood hematoma only slightly increased the neurological deficit scores and brain water content （P 〉0.05）. In conclusion, the autophagy pathway was activated after ICH, and acute hyperglycemia with hematoma of high-glucose blood exacerbates the neurological injury, and reduces autophagy around the hematoma.

关键词： intracerebral hemorrhage hyperglycemia autophagy

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Ultra-low-carbon steel spheroidization and torsion

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Journal of Iron and Steel Research International 2018年第9期25卷 968-974页

作者： Yan-jun Yin ji-quan Sun Ai-min Zhao jin Gou Institute of Engineering Technology University of Science and Technology Beijing Beijing 100083 China Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing 100083 China

Spheroidizing annealing and torsion testing of 0.027 wt% carbon steel rod were conducted to evaluate spheroidization kinetic behavior at 943 K （670 ℃） under deformed and non-deformed states. Kinetic curves were also predicted using the Johnson-Mehl-Avrami-Kolmogorov equation, and the results agree well with the experimental ones. After spheroidization was performed twice, the spherical cementite and precipitated carbides became smaller and the distribution was more uniform. Comparison of materials subjected to single and double spheroidizing annealing indicated a difference in grain size. Torsion performance was considerably improved under double spheroidization, especially the maximum torque with slight variations.

关键词： Ultra-low-carbon steel Spheroidization Spheroidization kinetic Torsion property

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Tempering stability of Fe–Cr–Mo–W–V hot forging die steels

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International Journal of minerals,Metallurgy and Materials 2017年第10期24卷 1145-1157页

作者： Yuan-ji Shi Xiao-chun Wu jun-wan Li Na min School of Materials Science and Engineering Shanghai University Shanghai 200072 China

The tempering stability of three Fe–Cr–Mo–W–V hot forging die steels(DM, H21, and H13) was investigated through hardness measurements and transmission electron microscopy(TEM) observations. Both dilatometer tests and TEM observations revealed that DM steel has a higher tempering stability than H21 and H13 steels because of its substantial amount of M_2C(M represents metallic element) carbide precipitations. The activation energies of the M_2C carbide precipitation processes in DM, H21, and H13 steels are 236.4, 212.0, and 228.9 kJ/mol, respectively. Furthermore, the results indicated that vanadium atoms both increase the activation energy and affect the evolution of M_2C carbides, resulting in gradual dissolution rather than over-aging during tempering.

关键词： tempering stability hot forging die steels carbide precipitation

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Analysis of Neutron Double-Differential Cross Sections for n ＋ ^12 C Reaction Below 30 MeV

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Communications in Theoretical Physics 2007年第3X期48卷 534-540页

作者： SUN Xiao-jun DUAN jun-Feng WANG ji-min ZItANG jing-Shang College of Physics and Electronic Engineering Guangxi Normal University~ Guilin 541004 China China Institute of Atomic Energy P.O. Box 275(41) Beijing 102413 China

Based on the light nucleus reaction model （Nucl. Sci. Eng. 133 （1999） 218）, four aspects （neutron incident energy region, reaction channel analysis, the renewed level schemes and the optical model parameters） of n＋ ^12 C reaction are improved to calculate total outgoing neutron double-dilferential cross sections with modified LUNF code below 30 MeV. The calculated results agree fairly well with the experimental data at En = 14.1 MeV and 18 MeV. The analysis shows that the pre-equilibrium mechanism, which is exactly considered the conservation of energy, momentum and parity, dominates the whole reaction process. The contribution of the neutron emission from 5He to total energy- angular spectra is also considered properly. This modified LUNF code will be a useful tool to set up the file of neutron double-differential crass sections below 30 Me V in the neutron evaluation nuclear data library.

关键词： double-differential cross section pre-equilibrium emission ^5He emission

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Research development of the relationship between thymidine phosphorylase expression and colorectal carcinoma

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Cancer Biology & Medicine 2013年第1期10卷 10-15页

作者： Dian-jun Ye ji-min Zhang Department of Gastrointestinal Surgery The Second Affiliated Hospital of Guangzhou Medical University

Thymidine phosphorylase (TP) is a key enzyme that contributes to the composition and decomposition of pyrimidine nucleotides. TP seems homologous to platelet-derived endothelial cell growth factor, and its effects on inducing vascularization and anti-apoptosis are closely related to growth and metastasis of colorectal carcinoma. In addition, TP is a key enzyme that catalyzes the transformation from 5-fluorouracil (FU) prodrugs of 5′-deoxy-5-fluorouridine (5′- DFUR) to 5-FU. The activity of TP is closely related to the sensitivity of colorectal carcinoma cells to fluorouracil drugs and targeted therapy. Given the important functions of TP in growth, metastasis, tumor treatment, and prognosis, determining its expression mechanism is significant. This article summarizes the research development of TP expression in colorectal carcinoma, tumor neovascularization, cytotoxicity activation of 5′-DFUR, and colorectal carcinoma therapy.

关键词： 1-hymidine phosphorylase colorectal carcinoma angiogenesis 5'deoxy-5-fluorouridine

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Exciton-Dependent Pre-formation Probability of Composite Particles

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Communications in Theoretical Physics 2007年第6期47卷 1106-1110页

作者： ZHANG jing-Shang WANG ji-min DUAN jun-Feng China Institute of Atomic Energy P.O. Box 275（41） Beijing 102413 China

In Iwamoto-Harada model the whole phase space is full of fermions. When the momentum distributions of the exciton states are taken into account, the pre-formation probability of light composite particles could be improved, and the exciton state-dependent pre-formation probability has been proposed. The calculated results indicate that the consideration of the momentum distribution enhances the pre-formation probability of [1, m] configuration, and suppresses that of [ι 〉 1, m] configurations seriously.

关键词： pre-formation probability pre-equilibrium emission

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SCHEDULING JOBS WITH GENERAL LEARNING FUNCTIONS

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Journal of Systems Science and Systems Engineering 2011年第1期20卷 119-125页

作者： Li-Yan WANG jian-jun WANG ji-Bo WANG En-min FENG School of Science Shenyang Aerospace University Shenyang 110136 China School of Mathematical Sciences Dalian University of Technology Dalian 116024 China School of Management Dalian University of Technology Dalian 116024 China

This paper deals with single-machine scheduling problems with a more general learning effect based on sum-of-processing-time. In this study, sum-of-processing-time-based learning effect means that the processing time of a job is defined by a decreasing function of the total normal processing time of jobs that come before it in the sequence. Results show that even with the introduction of the sum-of-processing-time-based learning effect to job processing times, single-machine makespan minimization problems remain polynomially solvable. The curves of the optimal schedule of a total completion time minimization problem are V-shaped with respect to iob normal orocessinz times.

关键词： Scheduling single machine learning effect makespan total completion time

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Nanosheet-stacked flake graphite for high-performance Al storage in inorganic molten AlCl_(3)-NaCl salt

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International Journal of minerals,Metallurgy and Materials 2020年第12期27卷 1711-1722页

作者： jun-xiang Wang ji-guo Tu Han-dong jiao d Hong-min Zhu State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Institute of Advanced Structure Technology Beijing Institute of TechnologyBeijing 100081China Department of Metallurgy Graduate School of EngineeringTohoku UniversitySendaiMiyagi 9808579Japan

Aluminum storage systems with graphite cathode have been greatly promoting the development of state-of-the-art rechargeable aluminum batteries over the last five years;this is due to the ultra-stable cycling,high capacity,and good safety of the *** study discussed the change of electrochemical behaviors caused by the structural difference between flake graphite and expandable graphite,the effects of temperature on the electrochemical performance of graphite in low-cost AlCl_(3)-NaCl inorganic molten salt,and the reaction mechanisms of aluminum complex ions in both graphite materials by scanning electron microscopy,X-ray diffraction,Raman spectroscopy,cyclic voltammetry,and galvanostatic charge-discharge *** was found that flake graphite stacked with noticeably small and thin graphene nanosheets exhibited high capacity and fairly good rate *** battery could achieve a high capacity of^219 mA·h·g^(-1) over 1200 cycles at a high current density of 5 A·g^(-1),with Coulombic efficiency of 94.1%.Moreover,the reaction mechanisms are clarified:For the flake graphite with small and thin graphene nanosheets and high mesopore structures,the reaction mechanism consisted of not only the intercalation of AlCl4^-anions between graphene layers but also the adsorption of Al Cl4^-anions within mesopores;however,for the well-stacked and highly parallel layered large-size expandable graphite,the reaction mechanism mainly involved the intercalation of AlCl4^-anions.

关键词： flake graphite expandable graphite molten salts aluminum storage intercalation

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