检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

改性烟草渣活性炭对甲基橙染料吸附性能研究

洛阳师范学院学报 2024年第5期43卷 18-22页

作者：卫新来孟雯雯王研苏其正合肥大学生物食品与环境学院安徽合肥230601 污水净化与生态修复材料安徽省重点实验室安徽合肥230088

以烟草渣废弃物为原料制备活性炭,再通过酸碱改性获得改性烟草渣活性炭.通过电子扫描镜和X射线衍射仪对制备的活性炭进行表征,然后以甲基橙水溶液为模拟废水,对改性烟草渣活性炭的吸附性能进行研究.最后对吸附过程进行动力学和热力学拟... 详细信息

以烟草渣废弃物为原料制备活性炭,再通过酸碱改性获得改性烟草渣活性炭.通过电子扫描镜和X射线衍射仪对制备的活性炭进行表征,然后以甲基橙水溶液为模拟废水,对改性烟草渣活性炭的吸附性能进行研究.最后对吸附过程进行动力学和热力学拟合分析,探究其吸附机理.实验表明:改性后的活性炭层状明显,纹理清晰,杂质减少;增大活性炭投加量、提高温度、延长吸附时间均可提高甲基橙去除率;投加量为3 g/L、温度为32℃、吸附时间为360 min时,改性活性炭对水中甲基橙的去除率可达到98.8%;整个吸附过程符合Lagergren准二级动力学模型和Freundlich吸附模型,吸附过程自发进行,此过程是吸热的,温度升高有利于吸附过程的进行.

关键词：烟草渣改性活性炭甲基橙吸附

营养及炎症指标与新型冠状病毒感染患者预后的相关性研究

在线全文

学校读者我要写书评

暂无评论

中华全科医学 2024年第8期22卷 1310-1312,1398页

作者：李雨佳项洁张丽洁孟文文张婷徐州医科大学第二临床医学院江苏徐州221000 徐州医科大学附属医院康复医学科江苏徐州221000

目的探究外周血中营养及炎症相关指标对新型冠状病毒感染患者预后的影响。方法回顾性分析2022年11月—2023年2月就诊于徐州医科大学附属医院的新型冠状病毒感染患者1351例,根据随访3个月的预后情况分为预后良好组(治愈或好转,1091例)和... 详细信息

目的探究外周血中营养及炎症相关指标对新型冠状病毒感染患者预后的影响。方法回顾性分析2022年11月—2023年2月就诊于徐州医科大学附属医院的新型冠状病毒感染患者1351例,根据随访3个月的预后情况分为预后良好组(治愈或好转,1091例)和预后不良组(放弃治疗或死亡,260例)。收集所有患者的一般临床资料、BMI、血清学营养及炎症指标等,计算并比较2组患者炎症、营养相关指标及复合指标。结果预后不良组患者的年龄、合并脑血管病、合并糖尿病、中性粒细胞计数、系统性免疫性炎症指数(SII)均高于预后良好组(P<0.01),预后不良组BMI、淋巴细胞计数、白蛋白水平、血小板计数、晚期肺癌炎症指数(ALI)、预后营养指数(PNI)低于预后良好组,差异均有统计学意义(P<0.05)。多因素logistic回归分析结果显示,高龄是新型冠状病毒感染患者预后的独立危险因素(P<0.05),高ALI、高PNI均是新型冠状病毒感染患者预后的独立保护因素(P<0.05)。ROC曲线分析结果显示,中性粒细胞、淋巴细胞、白蛋白、血小板的AUC分别为0.707(95%CI:0.672~0.742,P<0.001)、0.728(95%CI:0.694~0.762,P<0.001)、0.720(95%CI:0.686~0.753,P<0.001)、0.645(95%CI:0.607~0.684,P<0.001);复合指标ALI、PNI的AUC分别为0.783(95%CI:0.744~0.821,P<0.001)、0.744(95%CI:0.705~0.782,P<0.001)。复合指标的曲线下面积更大,即复合指标的预测价值更高。结论血清学营养及炎症指标与新型冠状病毒感染患者预后相关,复合指标如ALI、PNI可以作为预后不良的预测指标,且预测价值更高。

关键词：新型冠状病毒感染炎症营养评价预后

Morphological Evolution of Self-Assembled Sodium Dodecyl Sulfate/Dodecyltrimethylammonium Bromide@Epoxy-β-Cyclodextrin Supramolecular Aggregates Induced by Temperature

在线全文

学校读者我要写书评

暂无评论

Journal of Renewable Materials 2024年第4期12卷 629-641页

作者： Qingran meng wenwen Xu Zuobing Xiao Qinfei Ke Xingran Kou Key Laboratory of Textile Science&Technology Ministry of EducationCollege of TextilesDonghua UniversityShanghai201620China Collaborative Innovation Center of Fragrance Flavor and Cosmetics School of Perfume and Aroma Technology(Shanghai Research Institute of Fragrance&Flavour Industry)Shanghai Institute of TechnologyShanghaiChina

Bio-based cyclodextrins(CDs)are a common research object in supramolecular *** special cavity structure of CDs can form supramolecular self-assemblies such as vesicles and microcrystals through weak interaction with guest *** different forms of supramolecular self-assemblies can be transformed into each other under certain *** regulation of supramolecular self-assembly is not only helpful to understand the self-assembly principle,but also beneficial to its *** the present study,the self-assembly behavior of epoxy-β-cyclodextrin(EP-β-CD)and mixed anionic and cationic surfactant system(sodium dodecyl sulfate/dodecyltrimethylammonium bromide,SDS/DTAB)in aqueous solution was *** and particle size characterization found that the SDS/DTAB@EP-β-CD complex,as the basic building unit,self-assembled into worm-like micelles at lower temperatures and vesicles at higher *** magnetic resonance(NMR)and Fourier transform infrared spectroscopy(FT-IR)analysis revealed that the driving force for the formation of vesicles and worm-like micelles was the hydrogen bonds between EP-β-CD molecules,while water molecules played an important role in promoting vesicle formation between SDS/DTAB@EP-β-CD ***,the mechanism of the morphologic transformation of SDS/DTAB@EP-β-CD supramolecular aggregates induced by temperature was elucidated by exploring the self-assembly process,which may provide an excellent basis for the development of delivery carriers.

关键词： Epoxy-β-cyclodextrin SDS/DTAB self-assembly temperature morphological evolution

Astragaloside IV Alleviates Acute Liver Failure Induced by D-GalN/LPS by Upregulating Autophagy and Reducing Inflammation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Infectious Microbes & Diseases 2024年第1期6卷 20-28页

作者： meng Hong wenwen Lian Ying Yang Zhi Chen State Key Laboratory for Diagnosis and Treatment of Infectious Diseases National Clinical Research Center for Infectious DiseasesNational Medical Center for Infectious DiseasesCollaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesThe First Affiliated HospitalZhejiang University School of MedicineHangzhouChina

Acute liver failure(ALF)is a life-threatening condition that manifests in an extremely serious manner and progresses *** following study investigated the protective effect of astragaloside IV(AS-IV),a traditional Chinese drug,on ALF,and its underlying mechanisms,focusing on autophagy and inflammation *** were randomly divided into a saline group,a D-galactosamine and lipopolysac-charide(D-GalN/LPS)group and an AS-IV *** analysis,immunohistochemistry,cytometric bead array,high-throughput quantitative PCR,flow cytometry and Western analysis were used to assess inflammation and liver damage 5 hours after D-GalN/LPS *** IV treatment reduced mortality by alleviating D-GalN/LPS–induced hepatic damage and decreasing inflammation(decreasing Ly6c+monocyte levels,reducing inflammatory cytokines and increasing anti-inflammatory factors)as well as upregulating ***,PCR array was used to detect expression of autophagy-related genes,which demonstrated a Log2 fold change in gene expression between the AS-IV and D-GalN/LPS groups ranging from 1.19 to-3.53,with Tnfsf10 showing the largest alteration be-tween the two *** data suggest that AS-IV may alleviate ALF by upregulating autophagy and reducing inflammation,and it may therefore be an interesting drug for alleviating ALF.

关键词： astragaloside IV acute liver failure inflammation autophagy

SUB1 promotes colorectal cancer metastasis by activating NF-κB signaling via UBR5-mediated ubiquitination of UBXN1

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Life Sciences) 2024年第6期67卷 1199-1211页

作者： Hao Wang wenwen Chen Yanting Wang Yuzhen Gao Zizhen Zhang Shuyi Mi Liangjing Wang meng Xue Department of Gastroenterology The Second Affiliated Hospital of Zhejiang University School of MedicineHangzhou 310009China Institution of Gastroenterology Zhejiang UniversityHangzhou 310058China Department of Clinical Laboratory Sir Run Run Shaw HospitalZhejiang University School of MedicineHangzhou 310016China Department of Gastrointestinal Oncology Key Laboratory of Carcinogenesis and Translational Research(Ministry of Education/Beijing)Peking University Cancer Hospital and InstituteBeijing 100142China

Metastasis accounts for the major cause of colorectal cancer(CRC)related mortality due to the lack of effective *** this study,we integrated the single-cell RNA-seq(sc RNA-seq)and bulk RNA-seq data and identified the transcriptional coactivator SUB1 homolog(SacSaccharomyces cerevisiae)/PC4(positive cofactor 4)associated with CRC *** SUB1 expression was correlated with advanced tumor stage and poor survival in *** vivo and vitro assays showed that SUB1 depletion could inhibit the invasive and metastatic abilities of CRC ***1 activated NF-κB signaling and its transcriptional target genes CXCL1 and CXCL3 to drive CRC ***,SUB1 integrated with the E3 ubiquitin-protein ligase UBR5 and increased its protein level in CRC ***,the increased UBR5mainly mediated Lys11-linked polyubiquitination and degradation of NF-κB negative regulator UBXN1,thus to activate the NF-κB ***,our study demonstrated that SUB1 promoted CRC progression by modulating UBR5/UBXN1 and activating NF-κB signaling,providing a new therapeutic strategy for treating metastatic CRC through targeting SUB1.

关键词： colorectal cancer Metastasis SUB1 UBR5 NF-κB signaling

Interaction mechanism of cyanide with pyrite during the cyanidation of pyrite and the decyanation of pyrite cyanide residues by chemical oxidation

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2024年第9期31卷 1996-2005页

作者： wenwen Han Hongying Yang Linlin Tong Key Laboratory for Ecological Metallurgy of Multimetallic Mineral(Ministry of Education) Northeastern UniversityShenyang 110819China School of Metallurgy Northeastern UniversityShenyang 110819China

The toxic cyanides in cyanide residues produced from cyanidation process for gold extraction are harmful to the *** is one of the main minerals existing in cyanide *** this work,the interaction of cyanide with pyrite and the decyanation of pyrite cyanide residue were *** revealed that high pH value,high cyanide concentration,and high pyrite dosage promoted the interaction of cyanide with *** cyanidation of pyrite was pseudo-second-order with respect to *** decyanation of pyrite cyanide residue by Na_(2)SO_(3)/air oxidation was *** cyanide removal efficiency was 83.9% after 1 h of reaction time under the optimal conditions of pH value of 11.2,SO_(3)^(2-) dosage of 22 mg·g^(-1),and air flow rate of 1.46 L·min^(-1).X-ray photoelectron spectroscopy analysis of the pyrite samples showed the formation of Fe(Ⅲ)and FeSO_(4) during the cyanidation *** cyanide that adsorbed on the pyrite surface after cyanidation mainly existed in the forms of free cyanide(CN^(-))and ferrocyanide(Fe(CN)_(6)^(4-)),which were effectively removed by Na_(2)SO_(3)/air *** the decyanation process,air intake promoted pyrite oxidation and weakened cyanide adsorption on the pyrite *** study has practical significance for gold enterprises aiming to mitigate the environmental impact related to cyanide residues.

关键词： pyrite cyanide decyanation sodium sulfite/air oxidation cyanide residue

Complications of high myopia:An update from clinical manifestations to underlying mechanisms

在线全文

学校读者我要写书评

暂无评论

Advances in Ophthalmology Practice and Research 2024年第3期4卷 156-163页

作者： Yu Du Jiaqi meng wenwen He Jiao Qi Yi Lu Xiangjia Zhu Eye Institute and Department of Ophthalmology Eye&ENT HospitalFudan UniversityShanghaiChina NHC Key Laboratory of Myopia and Related Eye Diseases Key Laboratory of Myopia and Related Eye DiseasesChinese Academy of Medical SciencesShanghaiChina Shanghai Key Laboratory of Visual Impairment and Restoration ShanghaiChina State Key Laboratory of Medical Neurobiology Fudan UniversityShanghaiChina

Background:High myopia is one of the major causes of visual impairment and has an ever-increasing prevalence,especially in East *** is characterized by excessive axial elongation,leading to various blinding complications that extend beyond mere refractive errors and persist immovably after refractive surgery,presenting substantial public health *** text:High myopia-related complications include lens pathologies,atrophic and tractional maculopathy,choroidal neovascularization,peripheral retinal degenerations and retinal detachment,and glaucoma and heightened susceptibility to intraocular pressure(IOP)*** lens changes characteristic of high myopia include early cataractogenesis,overgrowth of lens,weakened zonules,and postoperative capsular contraction syndrome,possibly driven by inflammatory pathogenesis,***-shaped macula and cilioretinal arteries are two newly identified protective factors for central vision of highly myopic *** patients also face risks of open-angle glaucoma and IOP spike following intraocular *** alternations of optic nerve in high myopia can complicate early glaucoma detection,necessitating comprehensive examinations and close ***,thinner trabecular meshwork increases this risk;conversely lamina cribrosa defects may offer a fluid outlet,potentially mitigating the ***,anxiety has emerged as the first recognized extra-ocular complication in high myopia,with an underlying inflammatory pathogenesis that connects visual stimulus,blood and ***:High myopia induces multiple ocular and potential mental health complications,underscoring the need to develop more effective strategies to improve both physical and emotional well-being of these patients,among which anti-inflammation might possibly represent a promising new target.

关键词： High myopia Cataract Myopic maculopathy Open-angle glaucoma Anxiety

An Improved UNet Lightweight Network for Semantic Segmentation of Weed Images in Corn Fields

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2024年第6期79卷 4413-4431页

作者： Yu Zuo wenwen Li School of Information and Control Engineering Jilin Institute of Chemical TechnologyJilin132022China School of Mechanical and Control Engineering Baicheng Normal UniversityBaicheng137000China

In cornfields,factors such as the similarity between corn seedlings and weeds and the blurring of plant edge details pose challenges to corn and weed *** addition,remote areas such as farmland are usually constrained by limited computational resources and limited collected ***,it becomes necessary to lighten the model to better adapt to complex cornfield scene,and make full use of the limited data *** this paper,we propose an improved image segmentation algorithm based on ***,the inverted residual structure is introduced into the contraction path to reduce the number of parameters in the training process and improve the feature extraction ability;secondly,the pyramid pooling module is introduced to enhance the network’s ability of acquiring contextual information as well as the ability of dealing with the small target loss problem;and lastly,Finally,to further enhance the segmentation capability of the model,the squeeze and excitation mechanism is introduced in the expansion *** used images of corn seedlings collected in the field and publicly available corn weed datasets to evaluate the improved *** improved model has a total parameter of 3.79 M and miou can achieve 87.9%.The fps on a single 3050 ti video card is about *** experimental results show that the network proposed in this paper can quickly segment corn weeds in a cornfield scenario with good segmentation accuracy.

关键词： Semantic segmentation deep learning UNet pyramid pooling module

Viologen-based flexible electrochromic devices

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第6期93卷 453-470,I0012页

作者： wenwen Wu Shanlu Guo Jing Bian Xingyu He Haizeng Li Jianmin Li College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology) Nanjing University of Posts and TelecommunicationsNanjing 210023JiangsuChina Department of Pathology College of MedicineUniversity of CincinnatiCincinnati 45221OhioUSA Optics and Thermal Radiation Research Center Institute of Frontier and Interdisciplinary ScienceShandong UniversityQingdao 266237ShandongChina

Electrochromic technology has gained significant attention in various fields such as displays,smart windows,biomedical monitoring,military camouflage,human-machine interaction,and electronic skin due to its ability to provide reversible and fast color changes under applied *** the rapid development and increasing demand for flexible electronics,flexible electrochromic devices(FECDs)that offer smarter and more controllable light modulation hold great promise for practical *** electrochromic material(ECM)undergoing color changes during the electrochemical reactions is one of the key components in electrochromic *** the ECMs,viologens,a family of organic small molecules with 1,1'-disubstituted-4,4'-dipyridinium salts,have garnered extensive research interest,due to their well-reversible redox reactions,excellent electron acceptance ability,and the ability to produce multiple ***,viologen-based FECDs demonstrate color changes in the liquid or semisolid electrolyte layer,eliminating the need for two solid electrodes and thus simplifying the device ***,viologens offer significant potential for the development of FECDs with high optical contrast,fast response speed,and excellent *** review aims to provide a comprehensive overview of the progress and perspectives of viologen-based *** begins by summarizing the typical structure and recent exciting developments in viologen-based FECDs,along with their advantages and ***,the review discusses recent advancements in FECDs with additional functionalities such as sensing,photochromism,and energy ***,the remaining challenges and potential research directions for the future of viologen-based FECDs are addressed.

关键词： Flexible electrochromic devices Optical modulation Viologens Flexible electronics Multifunctional devices Electrochromism