检索结果-南通市图书馆

Micropollutant removal and disinfection byproduct control by sequential peroxymonosulfate-UV treatment in water: A case study with sulfamethoxazole

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2022年第7期34卷 141-150页

作者： Tian-Yang Zhang Yong-Shan Lu Zhen-Ning Luo Wen-Jun Sun Bin Xu Chen-Yan Hu yu-lin tang Zheng-yu Dong Xiao-Meng Ren State Key Laboratory of Pollution Control and Resource Reuse Key Laboratory of Yangtze Water EnvironmentMinistry of EducationCollege of Environmental Science and EngineeringTongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China School of Environment Tsinghua UniversityBeijing 100084China College of Environmental and Chemical Engineering Shanghai University of Electric PowerShanghai 200090China PLA Naval Medical Center Shanghai 200433China

UV/peroxymonosulfate(UV/PMS) advanced oxidation process has attracted significant attention for removal of micropollutants in water. However, during practical water treatment applications, the PMS treatment must be performed before the UV treatment to achieve full contact. In this study, sulfamethoxazole(SMX) was selected as the target micropollutant. Four different operational approaches, including UV alone, PMS alone, simultaneous UV/PMS and sequential PMS-UV, were compared for their differences in SMX removal and disinfection by-product(DBP) formation potentials during chlorine-driven disinfection. Among the four approaches, UV/PMS and PMS-UV achieved over 90% removal efficiencies for SMX without substantial differences. For raw water, the trichloronitromethane(TCNM) formation potential after treatment with PMS-UV was lower than that after UV/PMS treatment. The time interval over which the PMS-UV process was conducted had little effect on the final removal efficiency for SMX. However, a brief(5 min) pre-PMS treatment significantly reduced the TCNM formation potential and the genotoxicity from DBPs. The formation risk for TCNM during chlorination increased markedly with increasing PMS dosages, and the appropriate dosage under these experimental conditions was suggested to be 0.5–1.0 mmol/L. Under alkaline conditions, PMS-UV treatment can enhance SMX degradation as well as dramatically reduced the formation potentials for haloketones, haloacetonitriles and halonitromethanes. This study suggests that proper optimization of UV/PMS processes can remove SMX and reduce its DBP formation.

关键词： Peroxymonosulfate-UV(PMS-UV) Sulfamethoxazole(SMX) Disinfection by-products(DBPs) Operational approaches Water treatment

Update on techniques for cryopreservation of human spermatozoa

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Andrology 2022年第6期24卷 563-569页

作者： Chuan Huang yu-lin tang Jian-ling Hu Wen-Jun Zhou Zeng-Hui Huang Xue-Feng Luo Zheng Li Wen-Bing Zhu Institute of Reproductive and Stem Cell Engineering Basic Medicine CollegeCentral South UniversityChangsha 410000China Reproductive and Genetic Hospital of CITIC-Xiangya Changsha 410000China Department of Andrology Center for Men's HealthShanghai General HospitalShanghai Key Lab of Reproductive MedicineShanghai 200025China

In the 1960s,sperm cryopreservation was developed as a method to preserve ***,techniques for the cryopreservation of human spermatozoa have been widely used in assisted ***,although sperm cryobiology has made notable achievements,the optimal method for the recovery of viable spermatozoa after cryopreservation remains *** sperm quality can be affected by cryoprotectants,ice formation,storage conditions,and osmotic stress during the freezing *** review discusses recent advances in different cryopreservation techniques,cryoprotectants,and freezing and thawing methods during cryopreservation and new indications for the use of cryopreserved spermatozoa.

关键词： cryodamage cryoprotectant dry preservation freezing and thawing sperm cryopreservation

MKK7-mediated phosphorylation of JNKs regulates the proliferation and apoptosis of human spermatogonial stem cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Stem Cells 2021年第11期13卷 1797-1812页

作者： Zeng-Hui Huang Chuan Huang Xi-Ren Ji Wen-Jun Zhou Xue-Feng Luo Qian Liu yu-lin tang Fei Gong Wen-Bing Zhu Institute of Reproductive and Stem Cell Engineering Central South UniversityChangsha 410008Hunan ProvinceChina Department of Reproductive Center Reproductive and Genetic Hospital of CITIC-XiangyaChangsha 410008Hunan ProvinceChina Department of Sperm Bank Reproductive and Genetic Hospital of CITICXiangyaChangsha 410008Hunan ProvinceChina

BACKGROUND Human spermatogonial stem cells(SSCs)are the basis of ***,little is known about the developmental regulatory mechanisms of SSC due to sample origin and species *** To investigates the mechanisms involved in the proliferation of human *** The expression of mitogen-activated protein kinase kinase 7(MKK7)in human testis was identified using immunohistochemistry and western blotting(WB).MKK7 was knocked down using small interfering RNA,and cell proliferation and apoptosis were detected by WB,EdU,cell counting kit-8 and fluorescenceactivated cell *** bioinformatic analysis,the interaction of MKK7 with c-Jun N-terminal kinases(JNKs)was verified by protein co-immunoprecipitation and *** phosphorylation of JNKs was inhibited by SP600125,and the phenotypic changes were detected by WB,cell counting kit-8 and fluorescenceactivated cell *** MKK7 is mainly expressed in human SSCs,and MKK7 knockdown inhibits SSC proliferation and promotes their ***7 mediated the phosphorylation of JNKs,and after inhibiting the phosphorylation of JNKs,the phenotypic changes of the cells were similar to those after MKK7 *** expression of MKK7 was significantly downregulated in patients with abnormal spermatogenesis,suggesting that abnormal MKK7 may be associated with spermatogenesis *** MKK7 regulates the proliferation and apoptosis of human SSC by mediating the phosphorylation of JNKs.

关键词： MKK7 Spermatogonial stem cell Proliferation Apoptosis JNKs

Hypoxia-preconditioned bone marrow-derived mesenchymal stem cells protect neurons from cardiac arrest-induced pyroptosis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第4期20卷 1103-1123页

作者： Xiahong tang Nan Zheng Qingming lin Yan You Zheng Gong Yangping Zhuang Jiali Wu yu Wang Hanlin Huang Jun Ke Feng Chen Shengli Clinical Medical College of Fujian Medical University Fujian Medical UniversityFuzhouFujian ProvinceChina Department of Emergency Fujian Provincial HospitalFuzhouFujian ProvinceChina Fujian Provincial Key Laboratory of Emergency Medicine FuzhouFujian ProvinceChina The Second Department of Intensive Care Unit Fujian Provincial Hospital South BranchFuzhouFujian ProvinceChina

Cardiac arrest can lead to severe neurological impairment as a result of inflammation,mitochondrial dysfunction,and post-cardiopulmonary resuscitation neurological *** preconditioning has been shown to improve migration and survival of bone marrow–derived mesenchymal stem cells and reduce pyroptosis after cardiac arrest,but the specific mechanisms by which hypoxia-preconditioned bone marrow–derived mesenchymal stem cells protect against brain injury after cardiac arrest are *** this end,we established an in vitro co-culture model of bone marrow–derived mesenchymal stem cells and oxygen–glucose deprived primary neurons and found that hypoxic preconditioning enhanced the protective effect of bone marrow stromal stem cells against neuronal pyroptosis,possibly through inhibition of the MAPK and nuclear factor κB ***,we transplanted hypoxia-preconditioned bone marrow–derived mesenchymal stem cells into the lateral ventricle after the return of spontaneous circulation in an 8-minute cardiac arrest rat model induced by *** results showed that hypoxia-preconditioned bone marrow–derived mesenchymal stem cells significantly reduced cardiac arrest–induced neuronal pyroptosis,oxidative stress,and mitochondrial damage,whereas knockdown of the liver isoform of phosphofructokinase in bone marrow–derived mesenchymal stem cells inhibited these *** conclude,hypoxia-preconditioned bone marrow–derived mesenchymal stem cells offer a promising therapeutic approach for neuronal injury following cardiac arrest,and their beneficial effects are potentially associated with increased expression of the liver isoform of phosphofructokinase following hypoxic preconditioning.

关键词： bone marrow–derived mesenchymal stem cells cardiac arrest cardiac resuscitation hypoxic preconditioning liver isoform of phosphofructokinase mitochondria neuroinflammation oxidative stress pyroptosis reactive oxygen species

Revolutionizing breast cancer detection:Advances in fluorescent probe technology

在线全文

学校读者我要写书评

暂无评论

Nano Research 2025年第1期18卷 653-674页

作者： Qian Gao lin tang Jun Zhan Yiyuan Xue Feng Luo State Key Laboratory of Oral Diseases&National Center for Stomatology&National Clinical Research Center for Oral Diseases West China Hospital of StomatologySichuan UniversityChengdu 610041China Emergency Obstetrics and Gynecology West China Second University HospitalSichuan UniversityChengdu 610041China Department of Obstetrics and Gynecology West China Second University HospitalSichuan UniversityChengdu 610041China Department of Prosthodontics West China School of StomatologySichuan UniversityChengdu 610041China

With the increasing incidence of breast cancer globally,there is an urgent demand for enhanced diagnostic and therapeutic *** comprehensive review explores advancements in fluorescent probe technology for breast cancer imaging and early *** probes offer unparalleled sensitivity and specificity in detecting cancer biomarkers,enabling early diagnosis and delineation of tumor margins during *** categorize these probes into molecular,nano,ratiometric,the second near-infrared window(NIR-II),and multifunctional varieties,each with unique capabilities for targeting specific cancer *** review highlights recent innovations in probe design,emphasizing their applications in pathogenesis studies,drug development,precision medicine,and fluorescence-guided *** their promising clinical potential,challenges such as safety,biomarker targeting accuracy,system compatibility,and clinical translation *** these hurdles is crucial for the integration of fluorescent probes into standard cancer care,aiming to improve treatment outcomes and patient quality of life.

关键词： breast cancer fluorescent probes imaging early diagnosis biomarker

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

水性喷漆废水的处理试验研究

材料保护 2020年第12期53卷 68-71页

作者：于林堂张善林朴哲扬州大学环境科学与工程学院江苏扬州225127

为了有效处理水性喷漆废水,研究了混凝沉淀、芬顿氧化、生物氧化处理等组合工艺对水性喷漆废水的处理效果及最佳工艺条件。结果发现:PAC(聚合氯化铝)和PAM(聚丙烯酰胺)投加量分别为400 mg/L和8 mg/L时,COD(化学需氧量)的去除率最高达25... 详细信息

为了有效处理水性喷漆废水,研究了混凝沉淀、芬顿氧化、生物氧化处理等组合工艺对水性喷漆废水的处理效果及最佳工艺条件。结果发现:PAC(聚合氯化铝)和PAM(聚丙烯酰胺)投加量分别为400 mg/L和8 mg/L时,COD(化学需氧量)的去除率最高达25.3%。芬顿氧化的最佳条件为pH值3.0、H_(2)O_(2)浓度1.8%、FeSO_(4)·7H2O浓度2.0 g/L、反应时间120 min,COD去除率最高可达50.8%。经混凝沉淀和芬顿氧化的水性喷漆废水,在生物氧化阶段,控制进水COD为2000 mg/L,出水COD降至400 mg/L以下,去除率稳定在80%以上,出水综合指标达到水性喷漆废水排放企业所在园区的接管标准。

关键词：水性喷漆废水废水处理混凝沉淀芬顿氧化生物氧化

Engineering of Fe d-band center in Fe_(3)O_(4)/CeO_(2)hetero-nanoparticles via orbital coupling for high-efficiency oxygen reduction electrocatalysis

在线全文

学校读者我要写书评

暂无评论

Nano Research 2025年第1期18卷 129-139页

作者： Jiayi Liu Jingwen Yin Yingzi lin Mingxin Pang Huan Pang Songtao Zhang lin Xu Jun Yang Yawen tang Jiangsu Key Laboratory of New Power Batteries Jiangsu Collaborative Innovation Center of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing 210023Chin a 2 State Key Laboratory of Multiphase Complex Systems Center of MesoscienceInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225009China Testing Center Yangzhou UniversityYangzhou 225009China

The deliberate engineering of the d-band center of metal site represents an effective strategy to boost the intrinsic electrocatalytic performance toward the oxygen reduction reaction(ORR).Herein,following a heterointerfaceinduced orbital coupling rationale,we report a judicious design of an efficient ORR electrocatalyst consisting of Fe_(3)O_(4)/CeO_(2)hetero-nanoparticles in-situ encased into N-doped carbon nanofibers(abbreviated as Fe_(3)O_(4)/CeO_(2)@N-CNFs hereafter).The theoretic calculations uncover that the Fe_(3)O_(4)/CeO_(2)heterointerface-triggered orbital coupling can cause the down shift of the d-band center positions of Fe sites,which leads to the weakened chemisorption of oxygenated groups and lowered energy barrier for the potential-determining step,ultimately dramatically boosting the ORR intrinsic *** a consequence,the well-designed Fe_(3)O_(4)/CeO_(2)@N-CNFs display admirable ORR activity with a half-wave potential of 0.84 V and outstanding structural/electrochemical stability in an alkaline electrolyte,surpassing the commercial Pt/C benchmark and a majority of recently reported Fe_(3)O_(4)-based *** encouragingly,the Fe_(3)O_(4)/CeO_(2)@N-CNFsincorporated Zn-air battery outperforms the Pt/C-assembled counterpart with higher power density,larger energy density,and excellent cycling stability,serving as a competent candidate for ORR-involved renewable energy *** study offers an innovative approach for the rational manipulation of the d-band center and interfacial electron behavior of active sites toward the optimization of electrocatalytic performance.

关键词： hetero-nanoparticles electrospinning interfacial engineering orbital coupling oxygen reduction reaction

Amino acid assisted aqueous synthesis of highly stable CsPbBr_(3)nanocrystals for cell imaging

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano Research 2025年第1期18卷 675-683页

作者： Xue Li Yanan Guo Guoying Tan Qingyi Liu Nan Song yu tang State Key Laboratory of Applied Organic Chemistry Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030China

Lead halide perovskite nanocrystals(NCs)exhibit excellent optoelectronic performance and have drawn great interests in the fields of biological imaging and ***,the poor stability of CsPbX_(3)(X=Cl,Br,I)in water is still a challenge to hinder their practical *** this work,a facile strategy has been developed for aqueous synthesis of CsPbX_(3) nanocrystals,in which L-glutamic acid(LGlu)has been used to replace oleic acid in the synthetic *** from the synergic effects of L-Glu and oleylamine(OAm),CsPbBr_(3)nanocrystals(L-Glu/OAm-CsPbBr_(3)NCs)with high water stability have been directly prepared under a mild condition at room temperature in water,facilitated by the process of crystal phase transformation from Cs_(4)PbBr_(6) to CsPbBr_(3).L-Glu/OAm-CsPbBr_(3)NCs exhibit a high quantum yield of 85%and a narrow full width at half maximum of 16 nm,demonstrating their efficient luminescence in ***,L-Glu on the surface have contributed greatly to an acidic environment and passivation of surface defects,improving the water stability and dispersibility of CsPbBr_(3)***,L-Glu/OAm-CsPbBr_(3)NCs exhibit great biocompatibility due to the presence of L-Glu,resulting in their good performance for HeLa cell ***,we propose a facile and effective method to prepare CsPbBr_(3)nanocrystals with excellent water stability by using L-Glu and OAm as cooperated ligands and expand their application in cell imaging.

关键词： aqueous synthesis cell imaging lead halide perovskite nanocrystals L-glutamic acid phase transformation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

肺部吸入给药装置的研究进展

沈阳药科大学学报 2009年第10期26卷 835-844页

作者：张宇林霞唐星沈阳药科大学药学院辽宁沈阳110016

目的介绍肺部吸入给药装置的使用情况及最新进展。方法参阅国内外代表性文献资料,以其中的36篇为依据对其进行分析、归纳和整理。结果阐明了肺部吸入治疗的优越性及原理,并对肺部给药的喷雾器、定量吸入器和干粉吸入器的种类、作用机制... 详细信息

目的介绍肺部吸入给药装置的使用情况及最新进展。方法参阅国内外代表性文献资料,以其中的36篇为依据对其进行分析、归纳和整理。结果阐明了肺部吸入治疗的优越性及原理,并对肺部给药的喷雾器、定量吸入器和干粉吸入器的种类、作用机制、优缺点以及发展方向加以综述。结论肺部吸入给药具有广阔的发展和应用前景。

关键词：肺部给药喷雾器定量吸入器干粉吸入器综述