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Low-concentration and multi-component NMHCs capture from oil field exhaust using porous ZIF-8/iso-hexadecane slurry

Green Chemical Engineering 2024年第2期5卷 245-256页

作者： Kun Li han Tang Jin Cai chun Deng Bei Liu Yunlei Peng Changyu Sun Guangjin Chen State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing102249China

Non-methane hydrocarbons(NMHCs)are a common type of volatile organic compounds(VOCs)pollutant in the petrochemical industry and have attracted widespread attention because of their adverse health effects and environmental *** this paper,we report a new porous slurry formed with zeolitic imidazolate framework-8(ZIF-8)and iso-hexadecane to capture the low-concentration and multi-component NMHCs(mainly ethane(C_(2)H_(6)),propane(C_(3)H_(8)),and n-butane(n-C_(4)H_(10)))from the oil field *** sorption capacity of C_(2)H_(6)in the slurry is significantly higher than that of nitrogen(N_(2))and methane(CH_(4)).Moreover,the slurry demonstrated a clear advantage for C_(2)H_(6)over N_(2)and CH_(4)in competitive adsorption through the pressure-drop *** the NMHCs capture experiments,the C_(3)H_(8)and n-C_(4)H_(10)concentrations after purification can be reduced to below 100 ppm,while the C_(2)H_(6)concentration can reach approximately 180 *** encouragingly,in the breakthrough tests,the slurry exhibits a perfect kinetic separation selectivity for multi-component ***,to avoid structural collapse of ZIF-8 material during long-term use in acidic and wet environments,a certain amount of 2-methylimidazole was retained in the slurry as a protective agent in the material synthesis *** this way,the ZIF-8 materials in the slurry can retain the stable characteristic structure in an aqueous and acidic environment and keep the capture capacity for NMHCs without *** believe the porous ZIF-8/iso-hexadecane slurry is a promising capture agent for low-concentration and multi-component NMHCs with strong purification capacity and stability.

关键词： VOCs capture NMHCs capture MOFs ZIF-8 Porous slurry

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Clinical features and possible pathogenesis of multiple evanescent white dot syndrome with different retinal diseases and events:a narrative review

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International Journal of Ophthalmology(English edition) 2024年第3期17卷 583-595页

作者： chun-Li Chen Yi-Zhe Cheng Zhi-han Zhang Ge Wang Xiao-Yan Peng Department of Ophthalmology Beijing Tongren HospitalCapital Medical UniversityBeijing 100730China Beijing Ophthalmology and Visual Science Key Laboratory Beijing 100730China State Key Laboratory of Ophthalmology Zhongshan Ophthalmic CenterSun Yat-sen UniversityGuangzhou 510600Guangdong ProvinceChina

●Multiple evanescent white dot syndrome(MEWDS)is a rare fundus disease,characterized by acute vision loss and visual field *** previous studies have explained the possible pathogenesis and clinical features of primary ***,as the number of reported cases increases,secondary MEWDS occurs in other related retinal diseases and injuries,exhibiting some special *** associated retinal diseases include multifocal choroiditis/punctate inner choroidopathy(MFC/PIC),acute zonal occult outer retinopathy,best vitelliform macular dystrophy,pseudoxanthoma elasticum,and ocular *** related retinal injury is laser photocoagulation,surgery,and *** primary MEWDS often have a self-limiting course,secondary MEWDS may require treatment in some cases,according to the severity of concomitant diseases and ***,MEWDS secondary to MFC/PIC that is prone to forming choroidal neovascularization and focal choroidal excavation,needs positive treatment with *** possible underlying pathogenesis of secondary MEWDS is the exposure of choroidal antigen after the disruption of Bruch’s *** MEWDS-related features in secondary MEWDS are still evanescent under most *** prognosis and treatment depend on the severity of *** studies propose that the etiology is associated with immune factors,including viral infection,inflammation in choroid and Bruch’s membrane,and antigen exposure caused by retinal and/or choroidal *** pathogenic studies should be conducted in the *** diagnosis for secondary MEWDS could benefit patients in aspects of management and prognosis.

关键词： multiple evanescent white dot syndrome punctate inner choroidopathy multifocal choroiditis secondary multiple evanescent white dot syndrome

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Characteristics and source apportionment of ambient volatile organic compounds and ozone generation sensitivity in urban Jiaozuo,China

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Journal of Environmental Sciences 2024年第4期138卷 607-625页

作者： Pengzhao Li chun Chen Dan Liu Jie Lian Wei Li Chuanyi Fan Liangyu Yan Yue Gao Miao Wang hang Liu Xiaole Pan Jing mao State Centre for International Cooperation on Designer Low-Carbon and Environmental Materials School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China Henan Key Laboratory of Environmental Monitoring Technology Henan Ecological Environment Monitoring and Safety CenterZhengzhou 450046China Jiaozuo Ecological Environment Monitoring Center of Henan Province Jiaozuo 454003China State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China

In recent years,many cities have taken measures to reduce volatile organic compounds(VOCs),an important precursor of ozone(O_(3)),to alleviate O_(3) pollution in China.116 VOC species were measured by online and offline methods in the urban area of Jiaozuo from May to October in 2021 to analyze the compositional *** sources were analyzed by a positive matrix factorization(PMF)model,and the sensitivity of ozone generation was determined by ozone isopleth plotting research(OZIPR)*** results showed that the average volume concentration of total VOCs was 30.54 ppbv and showed a bimodal feature due to the rush-hour traffic in the morning and at *** most dominant VOC groups were oxygenated VOCs(OVOCs,29.3%)and alkanes(26.7%),and the most abundant VOC species were acetone and ***,based on the maximum incremental reactivity(MIR)method,the major VOC groups in terms of ozone formation potential(OFP)contribution were OVOCs(68.09μg/m^(3),31.5%),aromatics(62.90μg/m^(3),29.1%)and alkene/alkynes(54.90μg/m^(3),25.4%).This indicates that the control of OVOCs,aromatics and alkene/alkynes should take *** sources of VOCs were quantified by PMF,including fixed sources of fossil fuel combustion(27.8%),industrial processes(25.9%),vehicle exhaust(19.7%),natural and secondary formation(13.9%)and solvent usage(12.7%).The empirical kinetic modeling approach(EKMA)curve obtained by OZIPR on O_(3) exceedance days indicated that the O_(3) sensitivity varied in different *** results provide theoretical support for O_(3) pollution prevention and control in Jiaozuo.

关键词： Volatile organic compounds(VOCs) Online and offline measurement Ozone formation potential(OFP) Positive matrix factorization(PMF) Ozone isopleth plotting research(OZIPR) Jiaozuo

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Phenotype-Directed DNA Nanomachine for in Situ Analysis of Stem Cell-like Subpopulation in Breast Cancer

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CCS Chemistry 2024年第4期6卷 1034-1046页

作者： Ya Cao Huiru mao Lingjun Sha Qi Liu Bing han Jing Zhao Genxi Li Center for Molecular Recognition and Biosensing Shanghai Engineering Research Center of Organ RepairSchool of Life SciencesShanghai UniversityShanghai 200444 State Key Laboratory of Analytical Chemistry for Life Science School of Life SciencesNanjing UniversityNanjing 210023

The cancer stem cell hypothesis provides a basis for prediction of the recurrence and risk of metastasis in breast ***,the unique expression pattern of stemness markers and the presence of nonstem-like cancer cells with varied phenotypes have brought great challenges to the characterization of breast cancer stem *** address these challenges,a phenotype-directed DNA nanomachine has been designed for high-accuracy labeling and in situ analysis of the stem cell-like subpopulation in breast *** key for the design is to use cell surfaceanchored inputs to activate the nanomachine,which undergoes different branch migration pathways such that the signal strand can only be brought onto the cancer cells having the stem cell-like *** sensitive determination and single-step isolation of the stem cell-like subpopulation were achieved by incorporating functional groups into the signal strand such that the nanomachine was successfully applied in a tumor-bearing mouse ***,the approach provides for a substantial improvement in capability for the analysis of the breast cancer stem cell-like subpopulation,and it is expected that the new approach will advance the use of DNA nanomachines in cancer-related studies.

关键词： breast cancer DNA nanomachine stem cell-like subpopulation electrochemical determination single-step isolation phenotypic analysis

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重组人生长激素影响重度烧伤患者预后的前瞻性多中心研究

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中华烧伤杂志 2005年第5期21卷 347-349页

作者：陈国贤韩春茂浙江大学医学院第二附属医院烧伤科杭州310009

目的观察重组人生长激素(rhGH)对重度烧伤患者预后的影响。方法采用前瞻性多中心随机对照临床试验,将207例成年重度烧伤患者随机分为治疗组(每日皮下注射rhGH)和对照组(同法注射等量等渗盐水),观察两组患者病死率、血糖变化和烧伤脓毒... 详细信息

目的观察重组人生长激素(rhGH)对重度烧伤患者预后的影响。方法采用前瞻性多中心随机对照临床试验,将207例成年重度烧伤患者随机分为治疗组(每日皮下注射rhGH)和对照组(同法注射等量等渗盐水),观察两组患者病死率、血糖变化和烧伤脓毒症发生情况。结果治疗组和对照组的病死率分别为0.89%、5.26%(P>0.05),高血糖发生率分别为36.61%、18.95%(以>10.00mmol/L为标准),差异有统计学意义(P0.05).结论适量rhGH在成年重度烧伤患者中应用是安全的,但需注意观察血糖的变化。

关键词：烧伤人生长激素预后多中心研究

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Five quinolizidine alkaloids with anti-tobacco mosaic virus activities from two species of Sophora

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Chinese Chemical Letters 2024年第6期35卷 380-384页

作者： Ji Zhang Tong Zhang Qiao An Peng Zhang Cai-Yan Tian chun-mao Yuan Ping Yi Zhan-Xing Hu Xiao-Jiang Hao State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical UniversityGuiyang 550014China Natural Products Research Center of Guizhou Province Guiyang 550014China School of Pharmaceutical Sciences Guizhou Medical UniversityGuiyang 550025China School of Pharmacy Guizhou University of Traditional Chinese MedicineGuiyang 550025China State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of ScienceKunming 650201China Research Unit of Chemical Biology of Natural Anti-Virus Products Chinese Academy of Medical SciencesKunming 650201China

Three novel matrine-type alkaloids(1-3)and two unprecedented aloperine-type alkaloids(4 and 5)were isolated from the root of Sophora tonkinensis and the seeds of Sophora alopecuroides ***,compound 1 possessed an unprecedented 6/5/6 tricyclic skeleton,while compounds 2 and 3 characterized by rare 6/6/5/6 tetracyclic system and 6/6/6/6/6 pentacyclic system ***,compound 4 possessed an unprecedented 6/7/6/6 tetracyclic core,and compound 5 characterized by rare 6/6/6/6tetracyclic *** structures were elucidated by comprehensive spectroscopic data analysis and electronic circular dichroism(ECD)*** tests indicated that compound 5 displayed significant anti-tobacco mosaic virus(TMV)activity compared with the positive control ningnanmycin.

关键词： Matrine-type alkaloids Aloperine-type alkaloids Sophora tonkinensis Sophora alopecuroides Anti-tobacco mosaic virus

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组织工程皮肤与创面再生性修复

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中华烧伤杂志 2013年第2期29卷 122-125页

作者：韩春茂王新刚浙江大学医学院附属第二医院烧伤科浙江杭州310009

各种急、慢性致伤因素，如机械损伤、烧伤、体表肿瘤切除、慢性溃疡等导致的皮肤组织缺损在临床上十分常见”^[1-2]。传统的治疗方法如断层皮片移植一直被广泛应用^[1.3]，但仍存在供皮区不足、修复效果欠佳、造成新的创伤等遗憾。实现... 详细信息

各种急、慢性致伤因素，如机械损伤、烧伤、体表肿瘤切除、慢性溃疡等导致的皮肤组织缺损在临床上十分常见”^[1-2]。传统的治疗方法如断层皮片移植一直被广泛应用^[1.3]，但仍存在供皮区不足、修复效果欠佳、造成新的创伤等遗憾。实现皮肤缺损的再生性或无瘢痕修复，是人类一直以来的梦想。

关键词：组织工程再生干细胞修复皮肤附件

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Current knowledge for the risk factors of early permanent pacemaker implantation following transcatheter aortic valve replacement and what is next for the primary prevention?

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World Journal of Cardiology 2024年第2期16卷 54-57页

作者： Gen-Min Lin Wei-chun Huang Chih-Lu han Department of Medicine Hualien Armed Forces General HospitalHualien 970Taiwan Cardiovascular Center Kaohsiung Veterans General HospitalKaohsiung 81346Taiwan Department of Medicine Taipei Veterans General HospitalTaipei 112Taiwan

In this editorial,we comprehensively summarized the preoperative risk factors of early permanent pacemaker implantation after transcatheter aortic valve replacement(TAVR)among patients with severe aortic stenosis from several renowned clinical studies and focused on the primary prevention of managing the modifiable factors,e.g.,paroxysmal atrial fibrillation before the TAVR.

关键词： Permanent pacemaker implantation Transcatheter aortic valve replacement Interventricular conduction delay Diabetes Supraventricular arrhythmia

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Kuicolong-yu enema decoction retains traditional Chinese medicine enema attenuates inflammatory response ulcerative colitis through TLR4/NF-κB signaling pathway

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World Journal of Gastrointestinal Surgery 2024年第4期16卷 1149-1154页

作者： Li han Kun Tang Xiao-Li Fang Jing-Xi Xu Xi-Yun mao Ming Li Department of Anorectal Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine Anhui HospitalHefei 230001Anhui ProvinceChina Anorectal Center The First Affiliated Hospital of Anhui University of Traditional Chinese MedicineHefei 230001Anhui ProvinceChina Department of Spleen and Stomach Diseases Department of GastroenterologyAffiliated Wuhu Hospital of Traditional Chinese Medicine of Anhui College of Traditional Chinese MedicineWuhu 241000Anhui ProvinceChina

BACKGROUND Ulcer colitis(UC)is a chronic,nonspecific,and noninfectious inflammatory bowel ***,Toll-like receptors(TLRs)have been found to be closely associated with clinical inflammatory *** complete remission in patients with intermittent periods of activity followed by dormancy is ***,no study has explored the mechanism by which Kuicolong-yu enema decoction retains traditional Chinese medicine enemas to attenuate the inflammatory response in *** To explore the mechanism by which Kuicolong-yu enema decoction retains traditional Chinese medicine enemas to attenuate the inflammatory response in *** This prospective clinical study included patients who met the exclusion criteria in 2020 and *** patients with UC were divided into two groups(control and experimental).The peripheral blood of the experimental and control groups were collected under aseptic *** expression of TLR4 protein,NF-κB,IL-6,and IL-17 was detected in the peripheral blood of patients in the experimental group and control group before and 1 month after taking the *** co rrelation analysis was used to analyze the relationship between the expression level of TLR4 protein and the expression levels of downstream signal NF-κB and inflammatory factors IL-6 and IL-17,and Phan those in the control group(Phan those in the control group(P<0.05).The TLR4 protein expression in the experimental group was positively correlated with the expression level of downstream signal NF-κB and was positively correlated with the levels of downstream inflammatory cytokines IL-6 and IL-

关键词： Ulcerative colitis TLR4 NF-κB signaling pathway Kuicolong-yu enema

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重度烧伤患者早期肠内营养支持的经济学评价

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中国临床营养杂志 2006年第1期14卷 7-10页

作者：陈国贤韩春茂浙江大学医学院附属第二医院烧伤科杭州310009

目的研究重度烧伤患者早期肠内营养支持的疗效及费用。方法采用随机临床分组试验,将41例烧伤面积超过30%的患者分为肠内营养组(enteral nutrition,EN,n=21)和肠外营养支持为主的常规治疗组(conventionaltherapy,CONT,n=20)。治疗7天后... 详细信息

目的研究重度烧伤患者早期肠内营养支持的疗效及费用。方法采用随机临床分组试验,将41例烧伤面积超过30%的患者分为肠内营养组(enteral nutrition,EN,n=21)和肠外营养支持为主的常规治疗组(conventionaltherapy,CONT,n=20)。治疗7天后观察两组内脏蛋白水平和预后炎症营养指数(prognostic inflammatory and nutritionalindex,PINI)等的变化及不良反应。结果治疗7天后EN组的前白蛋白水平显著高于CONT组[(115.8±31.0)mg/Lvs.(69.4±17.3)mg/L,P<0.01];PINI显著低于CONT组(162.9±89.4vs.343±149,P<0.01);EN组治疗7天的费用比CONT组节约382.06元(P=0.00)。结论早期肠内营养支持改善营养状况的疗效优于常规治疗,且费用低,具有良好的成本效果比。

关键词：烧伤肠内营养预后炎症营养指数成本效果分析

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