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黑孢藻粉对Cu^(2+)和Cd^(2+)的吸附特性研究

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南宁师范大学学报（自然科学版） 2024年第2期41卷 97-105页

作者：杨小霞钟俏君庄炜东周洁华赵志娟南宁师范大学地理科学与规划学院广西南宁530100 南宁师范大学北部湾环境演变与资源利用教育部重点实验室广西南宁530100 南宁师范大学环境与生命科学学院广西南宁530100 南宁师范大学广西山地生态系统动植物进化与保护重点实验室广西南宁530100

重金属污染对水生态系统的影响日益严重,利用藻类去除水体中的重金属,已越来越受到研究者的关注。本研究以黑孢藻粉为生物吸附材料,探究其对Cu^(2+)和Cd^(2+)的吸附作用。通过分批实验研究不同的pH、温度、初始离子浓度、吸附时间对黑... 详细信息

重金属污染对水生态系统的影响日益严重,利用藻类去除水体中的重金属,已越来越受到研究者的关注。本研究以黑孢藻粉为生物吸附材料,探究其对Cu^(2+)和Cd^(2+)的吸附作用。通过分批实验研究不同的pH、温度、初始离子浓度、吸附时间对黑孢藻粉吸附效果的影响,并采用动力学、热力学、等温模型对吸附特性进行探讨。结果表明,黑孢藻粉在pH为6和7时对Cu^(2+)和Cd^(2+)的吸附效果最佳,吸附量可达13.0 mg/g和13.4 mg/g;随着初始离子浓度的增加,黑孢藻粉对Cu^(2+)和Cd^(2+)的吸附量逐渐升高,当浓度为100 mg/L时,吸附量分别为26.7 mg/g和22.9 mg/g;升温可促进黑孢藻粉吸附Cu^(2+)和Cd^(2+),在30℃时对两种离子的吸附量均大于11.0 mg/g。热力学研究表明黑孢藻粉对Cu^(2+)和Cd^(2+)的吸附为吸热反应;等温线分析显示黑孢藻粉吸附Cu^(2+)和Cd^(2+)的过程分别符合Freundlich和Langmuir模型;Cu^(2+)和Cd^(2+)的准二级动力学模型拟合效果较好,相关系数均大于0.9,即吸附过程受化学反应控制。

关键词：黑孢藻粉影响因素 Cu^(2+) Cd^(2+) 吸附特性

施用堆肥污泥对土壤细菌群落结构及朝天椒生长的影响

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南宁师范大学学报（自然科学版） 2024年第1期41卷 161-168页

作者：钟俏君韦柳江庄炜东杨小霞赵志娟南宁师范大学地理科学与规划学院广西南宁530100 南宁师范大学环境与生命科学学院广西南宁530100 南宁师范大学广西山地生态系统动植物进化与保护重点实验室广西南宁530100

通过研究不同比例(0%、5%、10%、20%)堆肥污泥处理下土壤细菌多样性和群落结构、部分土壤理化性质以及朝天椒生长性状的变化,以期为污泥减量化、无害化和资源化利用提供理论依据。结果表明,作物种植前施用堆肥污泥提高了放线菌门(Actino... 详细信息

通过研究不同比例(0%、5%、10%、20%)堆肥污泥处理下土壤细菌多样性和群落结构、部分土壤理化性质以及朝天椒生长性状的变化,以期为污泥减量化、无害化和资源化利用提供理论依据。结果表明,作物种植前施用堆肥污泥提高了放线菌门(Actinobacteriota)、厚壁菌门(Firmicutes)、绿弯菌门(Chloroflexi)、糖单孢菌属(Saccharomonospora)、嗜热裂孢菌属(Thermobifida)、链霉菌属(Streptomyces)、清野氏菌属(Planifilum)、节杆菌属(Arthrobacter)和芽孢杆菌属(Bacillus)的相对丰度,降低了变形菌门(Proteobacteria)和酸杆菌门(Acidobacteriota)的相对丰度。相关性分析表明放线菌门、糖单孢菌属和嗜热裂孢菌属与朝天椒生长性状呈显著正相关;变形菌门和酸杆菌门与朝天椒生长性状呈显著负相关。pH、阳离子交换量和全氮与部分门水平细菌群落存在显著相关性;阳离子交换量和有机质与部分属水平细菌群落存在显著相关性。由朝天椒生长状况可知,施用比例5%、20%的堆肥污泥能显著提高朝天椒果实数量和果实重量。

关键词：堆肥污泥细菌多样性细菌群落结构土壤理化性质

Understanding and improving Yangtze River Basin summer precipitation prediction using an optimal multi-Physics ensemble

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Frontiers of Earth Science 2024年第1期18卷 256-277页

作者： Yang ZHAO Fengxue qiao Xin-zhong LIANG Jinhua YU Climate Environment and Sustainability CenterNanjing University of Information Science and TechnologyNanjing 210044China Key Laboratory of Geographic Information Science(Ministry of Education) East China Normal UniversityShanghai 200241China School of Geographic Sciences East China Normal UniversityShanghai 200241China Department of Atmospheric and Oceanic Science University of MarylandCollege Park MD 20740USA Earth System Science Interdisciplinary Center University of MarylandCollege Park MD 20740USA Key Laboratory of Meteorological Disaster(KLME)(Ministry of Education)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD) Nanjing University of Information Science and TechnologyNanjing 210044China

This study employs the regional Climate-Weather Research and Forecasting model(CWRF)to first investigate the primary physical mechanisms causing biases in simulating summer precipitation over the Yangtze River Basin(YRB),and then enhance its predictive ability through an optimal multi-physics ensemble *** CWRF 30-km simulations in China are compared among 28 combinations of varying physics parameterizations during 1980−***-term average summer biases in YRB precipitation are remotely correlated with those of large-scale *** teleconnections of biases are highly consistent with the observed correlation patterns between interannual variations of precipitation and circulations,despite minor shifts in their primary action *** YRB precipitation aligns with a southward shifted East Asian westerly jet,an intensified low-level southerly flow south of YRB,and a south-eastward shifted South Asian high,alongside higher moisture availability over ***,decreased YRB precipitation corresponds to an opposite circulation *** CWRF control configuration using the ensemble cumulus parameterization(ECP),compared to other cumulus schemes,best captures the observed YRB precipitation characteristics and associated circulation *** ECP with the Morrison or Morrison-aerosol microphysics and the CCCMA or CAML radiation schemes enhances the overall CWRF *** to the control CWRF,the ensemble average of these skill-enhanced physics configurations more accurately reproduces YRB summer precipitation’s spatial distributions,interannual anomalies,and associated circulation *** Bayesian Joint Probability calibration to these configurations improves the ensemble’s spatial distributions but compromises its interannual anomalies and teleconnection *** findings highlight substantial potential for refining the representation of climate system physics to improve YRB precipitation *** is notabl

关键词： physics parameterization regional climate model downscaling skill enhancement multi-physics ensemble teleconnection bias reduction

Incidence,Survival Outcome,and Prognostic Nomogram of Patients with Angioimmunoblastic T-cell Lymphoma:a Population-based Analysis

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Current Medical Science 2022年第6期42卷 1220-1230页

作者： Hai-zhu CHEN Yun-xia TAO Yu ZHOU qiao-feng zhong Li-qiang ZHOU Yuan-kai SHI Department of Medical Oncology National Cancer Center/National Clinical Research Center for Cancer/Cancer HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing Key Laboratory of Clinical Study on Anticancer Molecular Targeted DrugsBeijing100021China

Objective Due to the rarity of angioimmunoblastic T-cell lymphoma(AITL),very limited data concerning its incidence patterns and prognostic factors are *** study aimed to explore the incidence,characteristics,survival outcomes,and prognostic factors of *** Age-adjusted incidence and temporal trends were calculated based on 1247 AITL patients from the National Cancer Institute’s Surveillance,Epidemiology,and End Results(SEER)-13 database.A total of 1525 AITL patients from the SEER-18 database and 43 patients from our single center were included for survival analysis and nomogram *** The age-adjusted incidence for overall cohort was 0.123[95%confidence interval(CI),0.117–0.131)per 100000 during 1992–*** overall incidence increased steeply at the rate of 15.3%(95%CI 11.0%–19.8%,P<0.001)per year during 1992–2004,but remained stable during 2004–2017(P=0.200).Similar incidence trends were observed in age,sex,and stage *** final nomograms consisted of four variables:age at diagnosis,sex,Ann Arbor stage,and primary *** concordance index(C-index)of the nomogram for 5-year overall survival prediction was 0.717,0.690 and 0.820 in the training cohort,validation cohort-1 and cohort-2,*** the disease-specific survival(DSS),the nomogram also demonstrated a good discrimination level,with the C-index for predicting the probability of DSS at 5 years of 0.716,0.682 and 0.813 for the three cohorts,*** calibration displayed good concordance between the nomogram-predicted and actual observed *** The age-adjusted incidence for AITL was low during 1992–*** incidence continuously increased during 1992–2004,but remained stable during 2004–*** nomograms as proposed may provide a favorable and accurate prognostic survival prediction in AITL.

关键词： angioimmunoblastic T-cell lymphoma incidence prognosis nomogram SEER

Effectiveness of six-step complex decongestive therapy for treating upper limb lymphedema after breast cancer surgery

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World Journal of Clinical Cases 2022年第25期10卷 8827-8836页

作者： Hui-Zhen Zhang qiao-Ling zhong Hui-Ting Zhang Qing-Hua Luo Hai-Lin Tang Li-Juan Zhang Sun Yat-sen University Cancer Center State Key Laboratory of Oncology in South ChinaGuangzhou 510060China

BACKGROUND Complex decongestive therapy(CDT)is currently recommended as the standard treatment for *** is a four-step detumescence therapy that can effectively treat upper limb lymphedema after breast cancer surgery,and is considered non-invasive,painless and without side *** To determine the effectiveness of a six-step CDT involving a foam granule bandage for the treatment of upper extremity lymphedema pressure after breast cancer surgical *** The study included 100 patients with upper extremity lymphedema after breast cancer *** surgical methods were mastectomy plus axillary lymph node dissection and breast preservation plus sentinel lymph node *** study population was further divided into the experimental group and control group with 50 cases in each *** control group was given conventional CDT(four-step method),which included skin care,freehand lymphatic drainage,foam granule pressurized bandage,and functional *** the experimental group,a six-step CDT method was applied that involved a foam particle bandage combined with air wave pressure therapy in addition to the four steps of conventional *** in both groups were given one course of treatment daily(20 times),and the changes in body moisture and subjective symptoms were measured before and after treatment,preoperatively and 20 times after *** No statistically significant differences in 50-Hz bioelectrical impedance and extracellular moisture ratio were observed between the two groups before treatment,suggesting comparability of the baseline *** treatment,the 50-Hz bioelectrical impedance of the experimental group was significantly higher than that in the control group,and the extracellular moisture ratio was significantly lower than that in the control group.A comparison of the differences between the two groups before and after treatment indicated that the treatment effect in the experimental group was better than th

关键词： Comprehensive deswelling Foam granule bandage Breast cancer Upper limb lymphedema Air pressure wave therapy

Influence of pore structure on thermal stress distribution inside coal particles during primary fragmentation

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Particuology 2024年第2期85卷 49-61页

作者： Kai qiao Shan zhong Siyang Tang Ke Yang Hairong Yue Kui Ma Lei Song Bin Liang School of Chemical Engineering Sichuan UniversityChengdu610065China Institute of New Energy and Low-carbon Technology Chengdu610207China

Thermal stress is an important reason of coal particle primary fragmentation,during which the role of pore structure is *** stress induced fragmentation experiments were conducted with low volatile coal/char particles,and the results show that the fragmentation severity enhances with increasing *** porous thermal stress models were developed with finite element method,and the influences of the pore shape,size,position and porosity on the thermal stress were *** maximum thermal stress inside particle increases with pore curvature,the pore position affects the thermal stress more significantly at the particle center and *** expectation of the maximum tensile thermal stress linearly increases with porosity,making the particles with higher porosity easier to fragment,contrary to the conclusion deduced from the devolatilization *** obtained results are valuable for the analysis of different thermal processes concerning the thermal stresses of the solid feedstocks.

关键词： Coal particle Primary fragmentation Thermal stress Pore structure Porosity

Two-dimensional precise figuring of 500 mm-long X-ray mirror using one-dimensional ion beam system

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Advances in Manufacturing 2024年第1期12卷 177-184页

作者： Qiu-Shi Huang Han-Dan Huang qiao-Yu Wu Jun Yu zhong Zhang Zhan-Shan Wang MOE Key Laboratory of Advanced Micro-Structured Materials Institute of Precision Optical Engineering(IPOE)School of Physics Science and EngineeringTongji UniversityShanghai200092People’s Republic of China Shanghai Professional Technical Service Platform for Full-Spectrum and High-Performance Optical Thin Film Devices and Applications Tongji UniversityShanghai200092People’s Republic of China Shanghai Frontiers Science Center of Digital Optics Tongji UniversityShanghai200092People’s Republic of China

In this study,a new method was developed to realize two-dimensional(2D)figure correction of grazing-incidence X-ray mirrors using a one-dimensional(1D)ion-beam figuring system.A mask of holes was specifically designed to generate removal functions at different widths and extend the figuring capability over a wide ***,a long mirror could be *** this method,the surface height root-mean-square(RMS)error of the center area of 484 mm×16 mm was reduced from 11.49 nm to 2.01 nm,and the 1D meridional RMS error reached 1.0 *** proposed method exhibits high precision and cost effectiveness for production of long X-ray mirrors.

关键词： Long-size mirrors Ion beam figuring Two-dimensional figure correction Mask

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真空技术在先进陶瓷制备中的应用

真空 2024年第4期61卷 85-91页

作者：刘诗梦赵环宇王杰乔忠路晋伟达张仁柱沈阳真空技术研究所有限公司辽宁沈阳110042 沈阳汇真真空技术有限公司辽宁沈阳110042 沈阳化工大学材料科学与工程学院辽宁沈阳110142

先进陶瓷材料具有高硬度、高模量、耐高温、耐腐蚀等结构特性以及优异的热学、光学和电学等功能特性,因此在航天航空、信息技术、国防军工、生物医疗与新能源等领域得到越来越多的应用。高性能先进陶瓷材料需求的增加推动了制备工艺的发... 详细信息

先进陶瓷材料具有高硬度、高模量、耐高温、耐腐蚀等结构特性以及优异的热学、光学和电学等功能特性,因此在航天航空、信息技术、国防军工、生物医疗与新能源等领域得到越来越多的应用。高性能先进陶瓷材料需求的增加推动了制备工艺的发展,在陶瓷成型与烧结技术中引入真空技术可以通过改善陶瓷致密度、成分均匀性与晶粒尺寸分布等因素促进其性能的提升。本文着重对真空技术在不同成型与烧结方法中的应用进行了分析归纳,探讨了不同制备方法的特征及真空气氛对于陶瓷性能提升的作用机理,最后对未来的研究方向进行了展望。

关键词：先进陶瓷真空技术成型烧结

LncRNA HCG18通过靶向miR-140-3p/PD-L1通路对鼻咽癌细胞生物学行为的影响

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生物医学工程与临床 2024年第1期28卷 103-113页

作者：高妍王忠巧新疆医科大学第二附属医院耳鼻喉科新疆乌鲁木齐830063

目的探讨长非编码(lncRNA)HCG18通过微小RNA-140-3p(miR-140-3p)/程序性死亡受体配体1(PD-L1)对鼻咽癌细胞增殖、迁移与侵袭的影响。方法选择人鼻咽癌CNE2细胞、人正常鼻黏膜上皮细胞HNEpC细胞,将CNE2细胞分为HCG18组、pcDNA3.1组、sh... 详细信息

目的探讨长非编码(lncRNA)HCG18通过微小RNA-140-3p(miR-140-3p)/程序性死亡受体配体1(PD-L1)对鼻咽癌细胞增殖、迁移与侵袭的影响。方法选择人鼻咽癌CNE2细胞、人正常鼻黏膜上皮细胞HNEpC细胞,将CNE2细胞分为HCG18组、pcDNA3.1组、sh-HCG18组、sh-NC组、miR-140-3p组、miR-NC组、miR-140-3p inhibitor组、Scramble组、HCG18+miR-NC组、HCG18+miR-140-3p组、miR-140-3p inhibitor+sh-NC组及miR-140-3p inhibitor+sh-PD-L1组。用CCK-8检测细胞增殖能力,Transwell实验检测细胞侵袭及迁移能力,Western blot检测PD-L1蛋白表达,实时荧光定量聚合酶链式反应(RT-qPCR)检测lncRNA HCG18、miR-140-3p及PD-L1 mRNA水平,生物信息学、双荧光素酶报告实验分析lncRNA HCG18、miR-140-3p及PD-L1的靶向关系。结果 CNE2细胞lncRNA HCG18、PD-L1蛋白及其mRNA表达水平高于HNEpC细胞,miR-140-3p表达水平低于HNEpC细胞(P <0.05)。上调lncRNA HCG18或下调miR-140-3p后CNE2细胞增殖、细胞迁移与侵袭能力增强,PD-L1蛋白、PD-L1 mRNA水平升高(P <0.05);下调lncRNA HCG18或上调miR-140-3p后CNE2细胞增殖、细胞迁移与侵袭能力降低,PD-L1蛋白、PD-L1 mRNA水平降低(P <0.05)。miR-140-3p与lncRNA HCG18、PD-L1均有靶向关系。上调miR-140-3p表达可逆转上调lncRNA HCG18对CNE2细胞增殖、迁移与侵袭的促进作用;沉默PD-L1可逆转下调miR-140-3p对CNE2细胞增殖、迁移与侵袭的促进作用。结论过表达lncRNA HCG18可通过海绵化miR-140-3p,上调PD-L1表达,促进CNE2细胞增殖、迁移与侵袭。

关键词： lncRNA HCG18 miR-140-3p PD-L1 鼻咽癌