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Electrocatalytic cleavage of a lignin β-O-4 model compound and coupling with nitrogen-containing aromatics using Prussian blue analogue-derived nickel–cobalt spinel

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Journal of Energy Chemistry 2025年第1期100卷 628-636页

作者： yi qi Xueying Chen Bowen Liu Xuliang Lin Xueqing qiu Yanlin qin Guangdong Provincial Key Laboratory of Plant Resources Biorefinery School of Chemical Engineering and Light Industry Guangdong University of Technology Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center Guangdong Basic Research Center of Excellence for Ecological Security and Green Development Guangdong University of Technology

Electrochemical conversion of lignin for the production of high-value heterocyclic aromatic compounds has great *** demonstrate the targeted synthesis and cation modulation of NiCo2O4spinel nanoboxes,synthesized via cation exchange and calcination *** catalysts exhibit excellent efficacy in the electrocatalytic conversion of lignin model compounds,specifically 2-phenoxy-1-phenylethanol,into nitrogen-containing aromatics,achieving high conversion rates and *** catalysts were synthesized via a cation exchange and calcination oxidation process,using Prussian blue nanocubes as *** porous architecture and polymetallic composition of the NiCo2O4spinel demonstrated superior performance in electrocatalytic oxidative coupling,achieving a 99.2 wt%conversion rate of the 2-phenoxy-1-phenylethanol with selectivities of 37.5 wt%for quinoline derivatives and 31.5 wt%for *** innovations include the development of a sustainable one-pot synthesis method for quinoline derivatives,the elucidation of a multistage reaction pathway involving CAO bond cleavage,hydroxyaldol condensation,and CAN bond formation,and a deeper mechanistic understanding derived from DFT *** work establishes a new strategy for lignin valorization,offering a sustainable route to produce high-value nitrogen-containing aromatics from renewable biomass under mild conditions,without the need for additional reagents.

关键词： Spinel Biomass valorization Electrocatalysis Lignin oxidation Coupling

Correlation analyse between thyroid hormone levels and severity of schizophrenia symptoms

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World Journal of Psychiatry 2025年第1期15卷 63-71页

作者： qi-hui Jiang Wei-Dong Gong Department of Endocrinology and Metabolism Hengyang Central HospitalHengyang 421000Hunan ProvinceChina Breast Tumor Surgical Outpatient Hengyang Central HospitalHengyang 421000Hunan ProvinceChina

BACKGROUND The imbalance of hormone levels in the body is closely related to the occurrence and progression of schizophrenia,especially thyroid *** To study the relationship between triiodothyronine(T3),thyroxine(T4),free T3(FT3),free T4(FT4),thyroid stimulating hormone(TSH)and *** In this study,100 schizophrenia patients were selected from our hospital between April 2022 and April *** clinical data were analyzed *** on the Positive and Negative Syndrome Scale(PANSS)score,patients were divided into mild(1-3 points,n=39),moderate(4 points,n=45),and severe groups(5-7 points,n=16).Additionally,55 healthy individuals served as a control *** blood samples were collected to measure T3,T4,FT3,FT4,TSH,and cortisol concentrations,analyzing their relationship with PANSS *** The serum levels of T3,FT3,FT4,TSH and cortisol in the schizophrenia group were lower than those in the control group(P<0.05).With the increase of the severity of the disease,the concentrations of T3 and T4 decreased,while the con-centrations of TSH and cortisol increased(P<0.05).The concentrations of TSH and cortisol were positively correlated with the PANSS score,while T3 and T4 were negatively correlated with the PANSS score(P<0.05).The receiver ope-rating characteristic curve results showed that T3,T4,TSH,and cortisol had good efficacy in the diagnosis of *** results showed that decreased T3 level,decreased T4 level,decreased TSH level and increased cortisol level may be independent risk factors for *** Thyroid hormone levels are associated with the severity of schizophrenia symptoms,which can provide new solutions for the diagnosis and treatment of schizophrenia.

关键词： Thyroid hormone Schizophrenia Symptom severity Positive and Negative Syndrome Scale score Cortisol

Development and validation of a HPLC-UV-MS method for the control of four anti-diabetic drugs in suspect counterfeit products

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Development and validation of a HPLC-UV-MS method for the co...

X射线荧光光谱法在线测定稀土冶炼分离过程中钬铒铥镱

第三届普析通用杯全国药物分析优秀论文评选交流会

作者： Ning An Jian-min Wu hui-yi Li qi-ming Zhang National Institute for the Control of Pharmaceutical and Biological Products,Beijing 100050,China Xiu-meiDai Zibo Institute for Drug Control,Zibo 255000,China

Objective:To develop an HPLC-UV method for the determination of valibose,miglitol, voglibose and acarbose,the four anti-diabetic ***:They were separated successfully by reversed phase chromatography with a gradually eluting of acetonitrile-phosphate buffer solution (pH 8.0) using Prevail carbohydrate column(5μm,250 mm×4.6 mm) at a wavelength of 210 *** more an ultra-performance liquid chromatography(UPLC) method with ESI-MS detection in positive ionization mode has also been established. Conclusion:These two methods were successfully applied to the quantitative and qualitative detection of 4α-glucosidases inhibitors in the potentially counterfeit anti-diabetic drugs.

关键词： anti-diabetic drugs α-glucosidases inhibitors counterfeit drugs HPLC-UV UPLC-ESI-MS

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冶金分析 2016年第8期36卷 1-6页

作者：梁元沈学静易启辉刘明博屈华阳胡学强钢铁研究总院广晟有色金属集团有限公司钢研纳克检测技术有限公司

我国稀土冶炼分离过程复杂,但多数稀土企业仍依靠实验室离线分析指导工艺,导致分析结果严重滞后,因此现迫切需要一种高效稳定的稀土在线分析方法。实验应用稀土配分在线分析仪,建立了一种在线测定稀土冶炼分离过程中Ho、Er、Tm、Yb配分... 详细信息

我国稀土冶炼分离过程复杂,但多数稀土企业仍依靠实验室离线分析指导工艺,导致分析结果严重滞后,因此现迫切需要一种高效稳定的稀土在线分析方法。实验应用稀土配分在线分析仪,建立了一种在线测定稀土冶炼分离过程中Ho、Er、Tm、Yb配分含量的方法。将采样管置于串级萃取槽水相分隔室内,在蠕动泵作用下将样品输送至分析区域,通过X射线荧光光谱法(XRF)进行检测和数据记录。实验将XRF测试条件优化为电压40kV、电流600μA、测试时间60s,模拟现场工况条件下优化蠕动泵泵速为250r/min,并采用基本参数法消除元素间吸收增强效应。样品11次测定结果的相对标准偏差(RSD)小于0.4%,实验室模拟及现场在线测试结果与电感耦合等离子体原子发射光谱法(ICP-AES)的离线分析结果吻合较好,测试结果滞后时间短,完全能够满足稀土冶炼分离过程工艺动态控制的测定需要。

关键词： X射线荧光光谱法(XRF) 钬铒铥镱基本参数法在线分析稀土冶炼分离

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(S)-3-羟基四氢呋喃的合成研究进展

合成化学 2017年第3期25卷 270-276页

作者：郑亿王辉亓亮凌飞钟为慧浙江工业大学药学院长三角绿色制药协同创新中心浙江杭州310014

综述了(S)-3-羟基四氢呋喃制备方法的研究现状,重点阐述了三种合成方法:(1)手性底物合成法;(2)手性催化剂不对称合成法;(3)酶催化不对称合成法。分析了不同制备方法的优劣,并对其未来发展进行了展望。

关键词： (S)-3-羟基四氢呋喃合成中间体综述

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Ammonia pyrolysis oxidation excited by nanosecond pulsed discharge:Global/fluid models hybrid solution

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Journal of Energy Chemistry 2025年第1期100卷 385-396页

作者： Mingming Zhang Hanyu Wu qi Chen Jiaxin Yang Bonan Liu School of Mechanical Electronic and Control Engineering Beijing Jiaotong University China University of Petroleum

The kinetic characteristics of plasma-assisted oxidative pyrolysis of ammonia are studied by using the global/fluid models hybrid solution ***,the stable products of plasma-assisted oxidative pyrolysis of ammonia are *** results show that the consumption of NH3/O2and the production of N2/H2change linearly with the increase of voltage,which indicates the decoupling of nonequilibrium molecular excitation and oxidative pyrolysis of ammonia at low ***,the detailed reaction kinetics mechanism of ammonia oxidative pyrolysis stimulated by a nanosecond pulse voltage at low pressure and room temperature is *** on the reaction path analysis,the simplified mechanism is *** detailed and simplified mechanism simulation results are compared with experimental data to verify the accuracy of the simplified ***,based on the simplified mechanism,the fluid model of ammonia oxidative pyrolysis stimulated by the nanosecond pulse plasma is established to study the pre-sheath/sheath behavior and the resultant consumption and formation of key *** results show that the generation,development,and propagation of the pre-sheath have a great influence on the formation and consumption of *** consumption of NH3by the cathode pre-sheath is greater than that by the anode pre-sheath,but the opposite is true for OH and O（1S）.However,within the sheath,almost all reactions do not ***,by changing the parameters of nanosecond pulse power supply voltage,it is found that the electron number density,electron current density,and applied peak voltages are not the direct reasons for the structural changes of the sheath and ***,the discharge interval has little effect on the sheath structure and gas mixture *** research results of this paper not only help to understand the kinetic promotion of non-equilibrium excitation in the process of oxidative pyrolysis but also help to explore th

关键词： Nanosecond pulsed discharge Ammonia Oxidative pyrolysis Fluid model Global model

Loss-of-function mutations of microRNA-142-3p promote ASH1L expression to induce immune evasion and hepatocellular carcinoma progression

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World Journal of Gastroenterology 2025年第1期31卷 126-145页

作者： Xing-hui Yu Yan Xie Jian Yu Kun-Ning Zhang Zhou-Bo Guo Di Wang Zhao-Xian Li Wei-qi Zhang Yu-ying Tan Li Zhang Wen-Tao Jiang School of Medicine Nankai UniversityTianjin 300192China Tianjin Key Laboratory of Molecular Diagnosis and Treatment of Liver Cancer Tianjin First Center HospitalTianjin 300192China Department of Liver Transplantation Tianjin First Center HospitalTianjin 300192China First Central Clinical School Tianjin Medical UniversityTianjin 300192China

BACKGROUND Hepatocellular carcinoma(HCC)has been a pervasive malignancy throughout the world with elevated *** therapeutic targets are beneficial to treat and predict the ***,the exact molecular mechanisms leading to the progression of HCC are still *** has shown that the microRNA-142-3p level decreases in HCC,whereas bioinformatics analysis of the cancer genome atlas database shows the ASH1L expression increased among liver tumor *** this paper,we will explore the effects and mechanisms of microRNA-142-3p and ASH1L affect the prognosis of HCC patients and HCC cell bioactivity,and the association between *** To investigate the effects and mechanisms of microRNA-142-3p and ASH1L on the HCC cell bioactivity and prognosis of HCC *** In this study,we grouped HCC patients according to their immunohistochemistry results of ASH1L with pathological tissues,and retrospectively analyzed the prognosis of HCC ***,explored the roles and mechanisms of microRNA-142-3p and ASH1L by cellular and animal experiments,which involved the following experimental methods:Immunohistochemical staining,western blot,quantitative real-time-polymerase chain reaction,flow cytometric analysis,tumor xenografts in nude mice,*** statistical methods involved in this study contained t-test,one-way analysis of variance,theχ^(2)test,the Kaplan-Meier approach and the log-rank *** In this study,we found that HCC patients with high expression of ASH1L possess a more recurrence rate as well as a decreased overall survival ***1L promotes the tumorigenicity of HCC and microRNA-142-3p exhibits reduced expression in HCC tissues and interacts with ASH1L through targeting the ASH1L 3′untranslated ***,microRNA-142-3p promotes apoptosis and inhibits proliferation,invasion,and migration of HCC cell lines in vitro via *** the exploration mechanism,we found ASH1L may promote an immunosuppressive mi

关键词： Hepatocellular carcinoma MicroRNA-142-3p ASH1L Immune evasion Tumor immune microenvironment Apoptosis

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检查中药中掺入吗啡的方法研究

分析测试学报 2004年第Z1期23卷 104-106页

作者：李慧义张启明张红朱维华中国药品生物制品检定所北京100050

　　我国每年出口到东南亚的中成药及保健品很多,价值逾亿.其中发现个别产品中掺有具有相似功效的化学药品.为此,新加坡卫生科学局颁布了,其中规定自2004年1月1日起,只有经过一系列严格检验的产品方可进口.为此,中国实验室国家认可委员... 详细信息

　　我国每年出口到东南亚的中成药及保健品很多,价值逾亿.其中发现个别产品中掺有具有相似功效的化学药品.为此,新加坡卫生科学局颁布了,其中规定自2004年1月1日起,只有经过一系列严格检验的产品方可进口.为此,中国实验室国家认可委员会组织了已通过国家实验室认可的若干实验室进行了此方面的能力比对.……

关键词： Morphine HPLC MS

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Practical approach for detecting k-nonseparability of multipartite quantum states

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 32-48页

作者： Jie Guo Jinchuan Hou Xiaofei qi Kan He College of Mathematics Taiyuan University of Technology School of Mathematics and Statistics Shanxi University Key Laboratory of Complex Systems and Data Science of Ministry of Education Shanxi University

The instantaneous detection of entanglement in quantum states poses a significant challenge in the fields of quantum computation and quantum information, and there are no practical methods or tools to complete this task satisfactorily so far. We propose a sufficient and necessary criterion of k-nonseparability for any n-partite finite or infinite dimensional systems, 2 ≤ k ≤ n. This criterion serves as the foundation for a practical scheme designed to detect entanglement and k-nonseparability across multipartite finite-dimensional systems. To exemplify the application of our scheme, we have developed a software tool that facilitates swift and precise identification of entanglement, k-nonseparability, and genuine entanglement within n-qubit systems, specifically tailored for systems with 2 ≤ n ≤ 4.

关键词： multipartite systems entanglement states entanglement witnesses ${\bm~k}$-nonseparability