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A New Chemiluminescent Triazine Reagent

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Chinese Chemical Letters 2001年第3期12卷 267-268页

作者： Quan Li ma Mei Hong SU hui min ma Zhi Hua WANG Shu Chuan LIANG Center for Molecular Sciences Institute of ChemistryChinese Academy of SciencesBeijing 100080

A new chemiluminescent reagent 7-(4,6-dichloro-1,3,5-triazinylamino)-4-methylcoumarin-4-methylcoumarin (DTMC) was synthesized by linking 7-amino-4-methylcoumarin to cyanuric chloride at 0-5 degreesC, and with it a novel chemiluminescence method was developed for the determination of hydrogen peroxide. The selectivity of this method is high, and most of the transition metal ions have no effect on the determination of H2O2.

关键词： 7-(4 6-dichloro-1 3 5-triazinylamino)-4-methylcoumarin chemiluminescent reagent hydrogen peroxide.

SYNTHESIS AND CHARACTERISTICS OF A CHELATING RESIN AS AN EXTRACTANT AND CHROMOGENIC REAGENT OF HEAVY METAL IONS IN SOLID PHASE EXTRACTION

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Chinese Journal of Polymer Science 2013年第8期31卷 1108-1116页

作者：张田林 hui-min ma Jia-jia Wang Cai-yan Zhu Bing-bing Wang Department of Chemical Engineering Huaihai Institute of Technology School of Chemical Engineering & Technology University of Mining and Technology College of Environment and Spatial Informatics University of Mining and Technology

A new chelating resin （CPS-Dma-SABA） was synthesized with the chloromethylated crossqinked polystyrene porous beads （CPS） as raw materials, which were bonded with salicylidene-o-aminobenzoic acid （SABA） on the surface via a quaternary ammonium unit as a linker. The results showed that CPS-Dma-SABA would easily change into a zwitterionic chelating resin （CPS-Dma-SABZ） when washed with distilled water. CPS-Dma-SABA was characterized by elemental analysis, infrared spectra and thermo-gravimetric analysis. The ion sorption capacities of CPS-Dma-SABA were found to be 1916 μg/g for Zn2＋ withpH at 4.5, 1620μg/g for Cu2＋ with pH at 6.2, 1291 μg/g for Ni2＋ withpH at 6.6 and 780 μg/g for Cr3＋ withpH at 5.5, respectively. The experiments showed CPS-Dma-SABA also changed its color when meeting with the metal ion in the aqueous solution. As a consequence, CPS-Dma-SABA can not only be used as a solid phase extractant but also an indicator for confirming the heavy metal ion in solutions.

关键词： Solid phase extractant Zwitterionic chelating resin Heavy metal ion o-Aminobenzoic acid Synthesis.

Oxidative Degradation of 2,4,6-Trichlorophenolin the Presence of Air Ions

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Chinese Chemical Letters 2001年第3期12卷 211-214页

作者： hui min ma Jens WOHLERS Uwe MEIERHENRICH Axel BERNECKER Vera SULING Wolfram THIEmaNN Center for Molecular Sciences Institute of ChemistryChinese Academy of SciencesBeijing 100080 Department of Chemistry University of BremenD-28334 BremenGermany

2,4,6-trichlorophenol (TCP) was firstly treated with air ions generated by electric discharge, and high dechlorination (53%) was observed after 60 min treatment, indicating that air ions are an efficient dechlorination means and might have a future in the oxidative removal of chlorinated phenols. In addition, a stepwise degradation of TCP, beginning with the formation of a major product 2,6-dichloro-1,4-benzenediol via substitution, is proposed through a detailed analysis of gas chromatography/mass spectrometry.

关键词： 2,4,6-trichlorophenol air ions electric discharge oxidative degradation pollutant treatment

1-Imino Nitroxide Pyrene, a Burst-type H^(+) Fluorescent Switch

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Chinese Chemical Letters 2005年第8期16卷 1125-1128页

作者： Jun LI Hong Mei WANG hui min ma De Qing ZHANG Shao Xiang XIONG Center for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100080

1-Imino nitroxide pyrene 1 has been characterized as a H^＋ fluorescent switch. The effects of various interfering species, solvents and the irradiation of ultraviolet light on the fluorescence intensity of 1 are also investigated. 1 fluoresces weakly in the 85% ethanol media containing no more than 4.5x10-5 mol/L of H^＋（HCI）, but can produce a burst increase of about 4 times in the fluorescence intensity when the concentration of H＋ is increased to or over 4.9×10^-5mol/L. The extremely sharp response of 1 to H＋ occurs only within such a narrow concentration range. Moreover, the decrease of H^＋ concentration through adding sodium hydroxide causes the fluorescence quenching, suggesting that 1 may serve as a fluorescent switch for monitoring the concentration change of H＋ around the point of 4.5×10^-5 mol/L.

关键词： Fluorescent switch l-imino nitroxide pyrene H^+

Assay of Cysteine in Human Serum with Quinine-Ce^(4+) Chemiluminescence System

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Chinese Chemical Letters 2002年第10期13卷 977-978页

作者： Li Hua NIE hui min ma Mei Hong SU ming SUN Xiao Hua LI Center for Molecular Sciences Institute of ChemistryChinese Academy of SciencesBeijing 100080

A sensitive and selective chemiluminescence (CL) method was developed for the determination of cysteine. This method is based on that the weak CL of cysteine oxidized with cerium (IV) can be greatly enhanced by quinine, and the total cysteine in human serum can be detected through simply diluting with water, showing a simpler analytical characteristic.

关键词： chemiluminescence cysteine quinine-Ce4+ system human serum

Identification of Early Warning Signals of Infectious Diseases in Hospitals by Integrating Clinical Treatment and Disease Prevention

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Current Medical Science 2024年第2期44卷 273-280页

作者： Lei ZHANG min-ye LI Chen ZHI min ZHU hui ma Sixth Medical Center Chinese PLA General HospitalBeijing100048China The Nursing Department Chinese PLA General HospitalBeijing 100853China

The global incidence of infectious diseases has increased in recent years,posing a significant threat to human *** typically serve as frontline institutions for detecting infectious ***,accurately identifying warning signals of infectious diseases in a timely manner,especially emerging infectious diseases,can be ***,there is a pressing need to integrate treatment and disease prevention data to conduct comprehensive analyses aimed at preventing and controlling infectious diseases within *** paper examines the role of medical data in the early identification of infectious diseases,explores early warning technologies for infectious disease recognition,and assesses monitoring and early warning mechanisms for infectious *** propose that hospitals adopt novel multidimensional early warning technologies to mine and analyze medical data from various systems,in compliance with national strategies to integrate clinical treatment and disease ***,hospitals should establish institution-specific,clinical-based early warning models for infectious diseases to actively monitor early signals and enhance preparedness for infectious disease prevention and control.

关键词： infectious disease disease prevention and control medical data warning signals

Adsorptive Stripping Voltammetric Study of the Enhancement of Copper(Ⅱ) in Phosphate and Carbonate media and in the Presence of Silicate

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Chinese Chemical Letters 1997年第6期8卷 61-64页

作者： ming SONG hui min ma Yue Xian HUANG and Shu Quan LIANG(Institute of Chemistry Chinese Academy of Sciences Beijing 100080) Institute of Chemistry Academia Sinica Beijing 100080 Taiwan China Institute of Atomic Energy P.O. Box 275-26 Beijing 102413 China

Adsorptive enhancements of several inorganic salts on copper(II) were studied by adsorptive stripping voltammetry with a hanging mercury drop electrode Increase in peak curren of cu(II) were observed in alkaline phosphate or media owing to adsorption Silicate can also enhance the peak current of Cu(II). The enhancing power phosphate,carbonate, and silicate is 33, 26, and 8.9 times, respectively.

关键词： in Phosphate and Carbonate media and in the Presence of Silicate II Adsorptive Stripping Voltammetric Study of the Enhancement of Copper

Pancreatic neuroendocrine carcinoma in a pregnant woman:A case report and review of the literature

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World Journal of Clinical Cases 2021年第17期9卷 4327-4335页

作者： Li-Ping Gao Gui-Xiang Kong Xiang Wang hui-min ma Fei-Fei Ding Ting-Dong Li Department of Gastroenterology The Second Hospital of Lanzhou UniversityLanzhou 730000Gansu ProvinceChina Department of Musculoskeletal Tumor Gansu Provincial Cancer HospitalLanzhou 730000Gansu ProvinceChina

BACKGROUND Portal venous thromboembolism caused by malignant pancreatic neuroendocrine tumor metastasis,as the initial presentation of portal hypertension and upper gastrointestinal bleeding,is a rare *** our knowledge,there are no reports of this entity in pregnant *** describe a case of pancreatic neuroendocrine carcinoma during pregnancy with hematemesis and hematochezia as the initial presentation and review the literature to analyze the demographic,clinical,and pathological features to provide a reference for clinical diagnosis and *** SUMmaRY A 40-year-old woman presented with hematemesis and hematochezia at 26-wk gestation;she had no other remarkable medical *** physical examination revealed normal vital signs,an anemic appearance,and lower abdominal *** color Doppler ultrasonography showed portal vein thrombosis,splenomegaly,intrauterine pregnancy,and intrauterine fetal *** revealed esophageal and gastric varicose veins and portal hypertensive ***-enhanced computed tomography demonstrated multiple emboli formation in the portal and splenic veins,multiple round shadows in the liver with a slightly lower density,portal vein broadening,varicose veins in the lower esophagus and gastric fundus,splenomegaly,bilateral pleural effusion,ascites and pelvic effusion,broadening of the common bile duct,and increased uterine *** to the results of Positron emission tomography-computed tomography and immunohistochemical staining,the final diagnoses were that the primary lesion was a pancreatic neuroendocrine tumor and that there were secondary intrahepatic metastases and venous cancer *** Upper gastrointestinal bleeding in a pregnant woman may be caused by portal hypertension due to a malignant pancreatic neuroendocrine tumor.

关键词： Pregnancy Portal venous thromboembolism Pancreatic neuroendocrine carcinoma Portal hypertension Gastrointestinal bleeding Case report

Application value of dexmedetomidine in anesthesia for elderly patients undergoing radical colon cancer surgery

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World Journal of Gastrointestinal Surgery 2024年第8期16卷 2671-2678页

作者： hui-min Bu min Zhao Hong-Mei ma Xiao-Peng Tian Department of Anesthetic Surgery Qingdao Haici Hospital Affiliated to Qingdao University(Qingdao Hospital of Traditional Chinese Medicine)Qingdao 266033Shandong ProvinceChina

BACKGROUND Colon cancer presents a substantial risk to the well-being of elderly people *** advancements in medical technology,surgical treatment has become the primary approach for managing colon cancer ***,due to age-related physiological changes,especially a decline in cognitive function,older patients are more susceptible to the effects of surgery and anesthesia,increasing the relative risk of postoperative cognitive dysfunction(POCD).There-fore,in the surgical treatment of elderly patients with colon cancer,it is of pa-ramount importance to select an appropriate anesthetic approach to reduce the occurrence of POCD,protect brain function,and improve surgical success *** One hundred and seventeen patients with colon cancer who underwent elective surgery under general anesthesia were selected and divided into two groups:A and *** A received Dex before anesthesia induction,and B group received an equivalent amount of normal *** in the mini-mental state exami-nation,regional cerebral oxygen saturation(rSO2),bispectral index,glucose uptake rate(GluER),lactate production rate(LacPR),serum S100βand neuron-specific enolase(NSE),POCD,and adverse anesthesia reactions were compared between the two *** Surgical duration,duration of anesthesia,and intraoperative blood loss were comparable between the two groups(P>0.05).The overall dosage of anesthetic drugs used in group A,including propofol and remifentanil,was significantly lower than that used in group B(Pmin after the start of surgery,and immediately after extubation,higher GluER values and lower LacPR values at the time of endotra-cheal intubation,30 min after the start of surgery,immediately after extubation,and 5 min after extubation(P<0.05).Group A exhibited lower levels of serum S100βand NSE 24 h postoperatively and a lower incidence of cognitive dysfunction on the 1st and

关键词： Colon cancer Dexmedetomidine General anesthesia Elderly Radical colon cancer surgery Bispectral index Cognitive function Regional cerebral oxygen saturation