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Influence of meteorological factors on open biomass burning at a background site in Northeast China

Journal of Environmental Sciences 2024年第4期138卷 1-9页

作者： Yulong Wang linlin Liang Wanyun Xu chang Liu Hongbing Cheng Yusi Liu Gen Zhang Xiaobin Xu Dajiang Yu Peng Wang Qingli Song Jiumeng Liu Yuan Cheng State Key Laboratory of Urban Water Resource and Environment School of EnvironmentHarbin Institute of TechnologyHarbin 150090China State Key Laboratory of Severe Weather&Key Laboratory for Atmospheric Chemistry Chinese Academy of Meteorological SciencesBeijing 100081China Longfengshan Regional Background Station China Meteorological AdministrationHeilongjiang 150200China Heilongjiang Climate Center Heilongjiang 150030China

Biomass burning(BB)is a very important emission source that significantly adversely impacts regional air *** produces a large number of primary organic aerosol(POA)and black carbon(BC).Besides,BB also provides many precursors for secondary organic aerosol(SOA)*** this work,the ratio of levoglucosan(LG)to organic carbon(OC)and the fire hotspots map was used to identify the open biomass burning(OBB)events,which occurred in two representative episodes,October 13 to November 30,2020,and April1 to April 30,*** ratio of organic aerosol(OA)to reconstructed PM_(2.5)concentration(PM_(2.5)^(*))increased with the increase of LG/*** LG/OC ratio is higher than 0.03,the highest OA/PM_(2.5)^(*)ratio can reach 80%,which means the contribution of OBB to OA is *** to the ratio of LG to K^(+),LG to mannosan(MN)and the regional characteristics of Longfengshan,it can be determined that the crop residuals are the main *** occurrence of OBB coincides with farmers’preferred choices,i.e.,burning biomass in“bright weather”.The“bright weather”refers to the meteorological conditions with high temperature,low humidity,and without *** factors indirectly affect regional biomass combustion pollution by influencing farmers’active choices.

关键词： Air pollution Biomass burning Meteorological factors Organic trace Agricultural fires

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Influence of High Relative Humidity on Secondary Organic Carbon: Observations at a Background Site in East China

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Journal of Meteorological Research 2019年第5期33卷 905-913页

作者： linlin LIANG Guenter ENGLING Yuan CHENG Xiaoye ZHANG Junying SUN Wanyun XU chang LIU Gen ZHANG Hui XU Xuyan LIU Qianli MA State Key Laboratory of Severe Weather&Key Laboratory for Atmospheric Chemistry Chinese Academy of Meteorological SciencesChina Meteorological AdministrationBeijing 100081China State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex Beijing 100084China Division of Atmospheric Sciences Desert Research InstituteRenoNV 89512USA California Air Resources Board CA 91731USA School of Environment Harbin Institute of TechnologyHarbin 150001China National Satellite Meteorological Center China Meteorological AdministrationBeijing 100081China Lin'an Regional Atmosphere Background Station Lin'an 311307China

To investigate the impacts of relative humidity(RH) on secondary organic aerosol(SOA) concentrations and chemical reactions, the carbonaceous aerosol components [i.e., organic carbon(OC) and element carbon(EC)] were quantified in daily PM2.5 samples collected at a background site in East China during summer 2015. Based on the method of EC-tracer, the concentration of secondary organic carbon(SOC) demonstrated an obvious negative relationship with RH higher than 60%. Moreover, the ratio of SOC/EC also exhibited obvious decreasing trends with increasing RH, indicating negative effects for chemical production of SOA under high RH conditions. Due to high RH,photochemistry was weakened, gaseous oxidant concentrations was lowered(e.g., significantly decreased O3 levels),and the production rates of SOA were relatively low. On the other hand, because of more water uptake under higher RH conditions, the aerosol droplet acidity was reduced and enhancement of SOA formation by acidity was accordingly absent. In addition, high RH also plays an important role in changing viscosity of pre-existing aerosol coatings,which can affect reactive uptake yield of SOA. Overall, the results from this study imply that SOA production may be more associated with photochemical processes, while aqueous-phase chemistry is not very important for some SOA formation in a moist ambient environment. In the ambient atmosphere, oxidant concentrations, reaction rates,airborne species, etc., are highly variable. How do these factors affect SOA yields under given ambient environment warrants further detailed investigations.

关键词： relative humidity organic aerosol secondary organic carbon(SOC) photochemistry aqueous-phase

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Based on non-targeted metabolomics for differential components screening of Rosae Chinensis Flos and Rosae Rugosae Flos and their quality evaluation

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Traditional Medicine Research 2025年第2期10卷 1-15页

作者： Xu Liang Ni-Hui Zhang Zhi-Lai Zhan Guang-Lu chang Yan Gao Xia Li Wen-Yuan Gao School of Pharmaceutical Science and Technology Faculty of MedicineTianjin UniversityTianjin 300193China State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs China Academy of Chinese Medical SciencesBeijing 100700China Key Laboratory of Modern Chinese Medicine Resources Research Enterprises Tianjin 300402China

Background:Rosa chinensis *** Rosa rugosa *** not only of ornamental value,but also edible flowers and the flower buds have been listed in the Chinese Pharmacopoeia as traditional *** two plants have some differences in efficacy,but the flower buds are easily confused for similar *** addition,large-scale cultivation of ornamental rose flowers may lead to a decrease in the effective components of medicinal ***,it is necessary to study the chemical composition and make quality evaluation of Rosae Chinensis Flos(Yueji)and Rosae Rugosae Flos(Meigui).Methods:In this study,40 batches of samples including Meigui and Yueji from different regions in China were collected to establish high-performance liquid chromatography ***,the fingerprints data was analyzed using principal component analysis,hierarchical cluster analysis,and partial least squares discriminant analysis analysis chemometrics to obtain information on intergroup differences,and non-targeted metabolomic techniques were applied to identify and compare chemical compositions of samples which were chosen from groups with large *** compounds were screened by orthogonal partial least-squares discriminant analysis and S-plot,and finally multi-component quantification was performed to comprehensively evaluate the quality of Yueji and ***:The similarity between the fingerprints of 40 batches roses and the reference print R was 0.73 to 0.93,indicating that there were similarities and differences between the *** principal component analysis and hierarchical cluster analysis of fingerprints data,the samples from different origins and varieties were intuitively divided into four *** least-squares discriminant analysis analysis showed that Meigui and Yueji cluster into two categories and the model was reliable.A total of 89 compounds were identified by high resolution mass spectrometry,mainly were flavonoids and flavon

关键词： Rosa chinensis Jacq. Rosa rugosa Thunb. metabolomics chemometrics multiple component quantification quality evaluation

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Biomass-derived carbon dots with pharmacological activity for biomedicine:Recent advances and future perspectives

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Science Bulletin 2024年第19期69卷 3127-3149页

作者： Yue Liu linlin Zhang Huijuan Cai Xiaoli Qu Junbiao chang Geoffrey I.N.Waterhouse Siyu Lu College of Chemistry Pingyuan LaboratoryZhengzhou UniversityZhengzhou 450001China Erythrocyte Biology Laboratory School of Life SciencesZhengzhou UniversityZhengzhou 450001China School of Chemical Sciences The University of AucklandAuckland 1142New Zealand

Carbon dots(CDs),a type of nanoparticle with excellent optical properties,good biocompatibility,and small size,are finding increasing application across the fields of biology and *** recent years,biomass-derived CDs with pharmacological activity(BP-CDs)derived from herbal medicines(HMs),HMs extracts and other natural products with demonstrated pharmaceutical activity have attracted particular ***,we review recent advances in the development of BP-CDs,covering the selection of biomass precursors,different methods used for the synthesis of BP-CDs from natural sources,and the purification of ***,we summarize the many remarkable properties of BP-CDs including optical properties,biocompatibility and pharmaceutical ***,the antibacterial,antiviral,anticancer,biosensing,bioimaging,and other applications of BP-CDs are ***,we discuss the advantages and disadvantages of BP-CDs and Western drug-derived CDs,highlighting the excellent performance of ***,based on the current state of research on BP-CDs,we suggest several aspects of BP-CDs that urgently need to be addressed and identify directions that should be pursued in the *** comprehensive review on BP-CDs is expected to guide the precise design,preparation,and future development of BP-CDs,thereby advancing the application of BP-CDs in biomedicine.

关键词： Carbon dots Biomass Pharmacological activity Synthesis Properties Biomedicine

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距骨骨软骨损伤治疗方案的个性化组合

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中国组织工程研究 2025年第21期29卷 4584-4592页

作者：陈学明佘昶无锡市第九人民医院(苏州大学附属无锡九院)足踝外科江苏省无锡市214000 苏州大学附属第二医院骨科江苏省苏州市215004

背景:距骨骨软骨损伤根据不同分型或临床症状,采取不同的治疗方法,包括保守治疗、手术治疗和生物制剂治疗。保守治疗大多可短时缓解症状和延缓病情;近年来关节镜下微骨折、克氏针钻孔、距骨软骨移植、自体骨软骨细胞移植、干细胞移植和... 详细信息

背景:距骨骨软骨损伤根据不同分型或临床症状,采取不同的治疗方法,包括保守治疗、手术治疗和生物制剂治疗。保守治疗大多可短时缓解症状和延缓病情;近年来关节镜下微骨折、克氏针钻孔、距骨软骨移植、自体骨软骨细胞移植、干细胞移植和生物制剂富血小板血浆等方法,都取得了不错的疗效。目的:对距骨骨软骨损伤的治疗进展进行总结,为其临床治疗提供参考。方法:第一作者以“talus,osteochondral lesions of the talus,微骨折,移植术,富血小板血浆,干细胞”为检索词,检索Pub Med数据库及中国知网2019年1月至2024年1月的相关文章。共纳入67篇文献进行综合分析。结果与结论:(1)目前治疗距骨骨软骨损伤的方式较多,对于Hepple分型Ⅰ和Ⅱ型病变保守康复治疗和生物制剂可缓解病情;Hepple分型Ⅲ型及以上且病变直径<15 mm选择微骨折或克氏针钻孔骨髓刺激治疗,但长期疗效不佳;更大病变面积选择置换和再生策略,移植失败是其最主要风险;(2)生物制剂治疗作为一种治疗新方式,多用于组合治疗;(3)针对距骨骨软骨损伤的治疗,需要考虑到软骨损伤的面积、部位等诸多因素,其治疗方案的选择还应考虑医疗技术开展情况以及患者接受程度、经济状况等因素,建议对各种方案进行个性化组合治疗,以取得更为良好的效果。

关键词：距骨距骨骨软骨损伤微骨折移植术富血小板血浆干细胞

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Pathogenesis and drug response of iPSC-derived cardiomyocytes from two Brugada syndrome patients with different Nav1.5-subunit mutations

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The Journal of Biomedical Research 2021年第5期35卷 395-407,I0004-I0007页

作者： Yue Zhu linlin Wang chang Cui Huiyuan Qin Hongwu Chen Shaojie Chen Yongping Lin Hongyi Cheng Xiaohong Jiang Minglong Chen Department of Cardiology the First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsu 210029China Department of Cardiology the Affiliated Brain Hospital of Nanjing Medical UniversityNanjing Chest HospitalNanjingJiangsu 210029China

Brugada syndrome(BrS)is a complex genetic cardiac ion channel disease that causes a high predisposition to sudden cardiac *** that its heterogeneity in clinical manifestations may result from genetic background,the application of patient-specific induced pluripotent stem cell-derived cardiomyocytes(iPSC-CMs)may help to reveal cell phenotype characteristics underlying different genetic ***,to verify and compare the pathogenicity of mutations(SCN5A c.4213G>A and SCN1B c.590C>T)identified from two BrS patients,we generated two novel BrS iPS cell lines that carried missense mutations in SCN5A or SCN1B,compared their structures and electrophysiology,and evaluated the safety of quinidine in patient-specific iPSC-derived *** to the control group,BrS-CMs showed a significant reduction in sodium current,prolonged action potential duration,and varying degrees of decreased Vmax,but no structural *** applying different concentrations of quinidine,drug-induced cardiotoxicity was not observed within 3-fold unbound effective therapeutic plasma concentration(ETPC).The data presented proved that iPSC-CMs with variants in SCN5A c.4213G>A or SCN1B c.590C>T are able to recapitulate single-cell phenotype features of BrS and respond appropriately to quinidine without increasing incidence of arrhythmic events.

关键词： human iPSCs Brugada syndrome disease modeling quinidine SCN5A SCN1B

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Cerebral fat embolism following autologous fat injection in facial reconstruction:A case report

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World Journal of Clinical Cases 2025年第2期13卷 50-58页

作者： Xiu-Ying Chen Fa Shen chang Cheng Yu-Han Wang Wen-Chao Cheng De-Zhi Yuan Wen Huang Department of Neurology Chongqing Emergency Medical CenterChongqing University Central HospitalChongqing 400000China Department of Neurology Xinqiao HospitalThe Army Medical University(Third Military Medical University)Chongqing 400000China

BACKGROUND Autologous fat injection in facial reconstruction is a common cosmetic *** cerebral fat embolism(CFE)as a complication is rare,it carries serious health *** SUMMARY We present a case of a 29-year-old female patient who developed acute CFE following facial fat filling *** the surgery,the patient experienced symptoms including headache,nausea,vomiting,and difficulty breathing,which was followed by neurological symptoms such as slurred speech and left-sided *** physical examination and auxiliary investigations,including blood tests,head and neck computed tomography angiography,and cranial magnetic resonance diffusion-weighted imaging,were performed upon *** clinical diagnosis was acute cerebral embolism following facial fat filling *** included measures to improve cerebral circulation,dehydration for intracranial pressure reduction,nutritional support,and rehabilitation therapy for left limb *** patient showed a significant improvement in symptoms after 2 weeks of *** recovered left limb muscle strength to grade 5,had clear speech,and experienced complete relief of *** Our case highlights the potential occurrence of severe complications in patients undergoing fat injection in facial *** prevent these complications,plastic surgeons should enhance their professional knowledge and skills.

关键词： Cerebral fat embolism Mechanical thrombectomy Thrombolysis Steroid therapy Symptomatic treatment Case report

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巨噬细胞极化在组织修复过程中的可视化分析

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中国组织工程研究 2025年第7期29卷 1486-1496页

作者：常金霞刘羽飞牛少辉王唱曹建春北京中医药大学北京市100029 中国中医科学院西苑医院北京市100091 北京中医药大学东方医院北京市100078

背景:巨噬细胞在组织修复和再生过程的各个阶段展现出促炎、抗炎、促纤维化、促伤口愈合等多重活性,巨噬细胞的异质性及其平衡极化对器官修复具有决定性作用。目的:通过可视化分析方法探究巨噬细胞极化在组织修复领域的研究热点和发展趋... 详细信息

背景:巨噬细胞在组织修复和再生过程的各个阶段展现出促炎、抗炎、促纤维化、促伤口愈合等多重活性,巨噬细胞的异质性及其平衡极化对器官修复具有决定性作用。目的:通过可视化分析方法探究巨噬细胞极化在组织修复领域的研究热点和发展趋势,以及该领域全球科研与临床工作者的研究水平。方法:利用文献计量分析方法,采用Citespace文献可视化分析软件和VOSviewer工具,在Web of Science Core Collection的科学引文索引扩展(SCI-Expanded)和社会科学引文索引扩展(SSCI-Expanded)数据库中检索2013-2023年间的相关文献,通过动态图谱形式呈现分析结果,揭示研究的主要趋势和焦点。结果与结论:在2013-2023年,有关巨噬细胞极化在组织修复领域的发文量迅速增加,尤其从2017年增加显著;中国研究者的发文量居于第一位(642篇),美国研究者较早关注到该领域;Elisseeff Hennifer H教授对该领域研究有非常高的贡献;上海交通大学是发文量最多的机构;近年来“透明质酸”“调控”等关键词出现频率较高。巨噬细胞极化在组织修复领域的研究主要集中在其多功能性的调节机制、与其他细胞类型的相互作用以及在特定病理条件下的表现,研究热点涵盖了巨噬细胞在创面、心血管疾病、慢性炎症、肿瘤微环境及再生医学中的作用。通过深入理解巨噬细胞的多功能性和极化机制可以开发新的治疗策略,促进组织修复和再生,提高患者治疗效果。

关键词：文献计量学巨噬细胞极化组织修复 VOSviewer Citespace

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Thorium distribution on the Moon:new insights from chang’E-2 gamma-ray spectrometer

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Research in Astronomy and Astrophysics 2019年第6期19卷 1-14页

作者： Meng-Hua Zhu Jin chang Tao Ma State Key Laboratory of Lunar and Planetary Sciences Macao University of Science and Technology Taipa Macao China Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210034 China CAS Center for Excellence in Comparative Planetology Hefei 230026 China

We present the thorium distribution on the lunar surface derived from observations by the chang’E-2 gamma-ray spectrometer(CE-2 GRS). This new map shows a similar thorium distribution to previous observations. In combination with this new thorium map and impact cratering model, we investigate the origination of thorium on the Moon’s highlands, which was previously thought to be contributed from Imbrium ejecta. We found that the Imbrium ejecta has a small contribution(~20%–30%) to the thorium on the lunar highlands but most thorium is likely to be indigenous before the deposition of the Imbrium ejecta. This new thorium map also confirms that the eastern highlands have a relatively higher thorium concentration than the western highlands. We propose that the thin crust and large basins on the eastern highlands are responsible for this difference in thorium.

关键词： Moon-chang'E-2 Gamma-ray Spectrometer-Thorium distribution

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Surgical treatment of cardiac lipoma: 20 years’ experience in a single center

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Chinese Medical Journal 2023年第5期136卷 565-570页

作者： linlin Li Jian Meng Xingtong Zhou chang Liu Hongwei Guo Hongguang Fan Center of Cardiac Surgery in Adults State Key Laboratory of Cardiovascular DiseaseFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100037China State Key Laboratory of Cardiovascular Disease Fuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100037China Center of Heart Rehabilitation State Key Laboratory of Cardiovascular DiseaseFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100037China Center of Structural Heart Disease State Key Laboratory of Cardiovascular DiseaseFuwai HospitalNational Center for Cardiovascular DiseasesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100037China.

Background: Primary cardiac lipoma is very rare, and no consensus has been developed regarding its ideal treatment strategy. This study reviewed the surgical treatment of cardiac lipomas in 20 patients over 20 years. Methods: Twenty patients with cardiac lipomas were treated at Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College from January 1, 2002, to January 1, 2022. The patients' clinical data and pathological reports were retrospectively analyzed, and the follow-up with a range of 1 year to 20 years was conducted. Results: The cardiac lipomas were located in the right atrium (RA) or superior vena cava (SVC) in seven patients (35%) (RA in six patients and SVC in one patient), left ventricle in eight patients (40%) (left ventricular chamber in four patients and left ventricular subepicardium and myocardium in four patients), right ventricle in three patients (15%) (right ventricular chamber in one patient and right ventricular subepicardial layer and myocardium in two patients), subepicardial interventricular groove in one patient (5%), and pericardium in one patient (5%). Complete resection was achieved in 14 patients (70%), including seven patients with lipomas in the RA or SVC. Incomplete resection occurred in six patients (30%) with lipomas in the ventricles. No perioperative deaths occurred. Long-term follow-up was conducted for 19 patients (95%), including two (10%) who died. Both patients who died had lipomas incompletely resected due to ventricles involvement, and preoperative malignant arrhythmias persisted post-operatively. Conclusions: The complete resection rate was high, and the long-term prognosis was satisfactory in patients with cardiac lipomas that did not involve the ventricle. The complete resection rate was low in patients with cardiac lipomas in ventricles;and complications, including malignant arrhythmia, were common. Failure of complete resection and post-operativ

关键词： Cardiac lipoma Surgical treatment Long-term outcomes

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