检索结果-南通市图书馆

A Mn-porphyrinic metal–organic framework immobilizing glucose oxidase for combined photodynamic/chemodynamic/starvation therapy

在线全文

学校读者我要写书评

暂无评论

Tungsten 2025年第1期 183-194页

作者： Xin-Ran Sun Hao-Ming Yuan Guo-da Zhang Chao Wang Shu-juan Sun Peng-Fei Shi Shandong Provincial Key Laboratory of detection Technology for Tumor Markers School of Chemistry and Chemical Engineering Linyi University

The combination of photodynamic therapy（PdT） and chemodynamic therapy（CdT） in tumor treatment has attracted considerable ***,tumor hypoxia and glutathione（GSH） overproduction in the tumor tissue restricted the progress of their ***,a Mn-porphyrinic metal-organic framework（Mn-TCPP） was constructed by the one-pot method and further used for immobilizing glucose oxidase（GOx） to obtain GOx@*** would rapidly exhaust endogenous glucose into hydrogen peroxide（H2O2） and gluconic acid,thus shutting off the energy supply of tumor cells for starvation ***-TCPP catalyzed H2O2to produce oxygen,regulating the hypoxic tumor microenvironment and in turn improving1O2generation under laser ***,Mn-TCPP can reduce reactive oxygen species consumption owing to the redox reaction between Mn3+and GSH,thus greatly enhancing ***,benefiting from GOx-mediated starvation therapy,Mn2+produced by Mn3+reduction can react with sufficient intracellular H2O2to generate ·OH with high cytotoxicity through a Fenton-like *** treatment by GOx@Mn-TCPP under laser irradiation in vitro,the cell viability of 4T1 and A549 tumor cells reached to 20%,reflecting GOx@Mn-TCPP could give full play to the advantages of PdT/CdT/starvation *** results in vivo demonstrated that GOx@Mn-TCPP mediated synergistic cascade therapy could significantly inhibit tumor growth and improve the therapeutic effect.

关键词：

Total phosphorus concentrations in surface water of typical agro- and forest ecosystems in China, 2004-2010

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Environmental Science & Engineering 2014年第4期8卷 561-569页

作者： juan XIE Xinyu ZHANG Zhiwei XU Guofu YUAN Xinzhai TANG Xiaomin SUN d.J. BALLANTINE Key Laboratory of Ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China department of Environmental Science Xi'an Jiaotong-Liverpool University Suzhou 215123 China

The concentrations of total phosphorus （TP） from 83 surface water sampling sites in 29 of the Chinese Ecosystem Research Network （CERN） monitored ecosystems, representing typical agro- and forest ecosystems, were assessed using monitoring data collected between 2004 and 2010 from still and flowing surface water. Results showed that, TP concentrations were significantly higher in agro-ecosystems than those in forest ecosystems both for still and flowing surface water. For agro- ecosystems, TP concentrations in the southern area were significantly higher than those in the northern and north- western areas for both still and flowing surface water, however no distinct spatial pattern was observed for forest ecosystems. In general, the median values of TP within agro- and forest ecosystems did not exceed the Class V guideline for still （0.2mg.L-1） or flowing （0.4mg.L-1） surface water, however, surface water at some agro- ecosystem sampling sites was frequently polluted by TE Elevated concentrations were mainly found in still surface water at the Changshu, Fukang, Linze and Naiman monitored ecosystems, where exceedance （〉 0.2 mg.L-1） frequencies varied from 43% to 78%. For flowing water, elevated TP concentrations were found at the Hailun, Changshu and Shapotou monitored ecosystems, where exceedance （〉 0.4 mg. L-1） frequencies varied from 29% to 100%. Irrational fertilization, frequent irrigation and livestock manure input might be the main contributors of high TP concentrations in these areas, and reduced fertilizer applications, improvements in irrigation practices and centralized treatment of animal waste are necessary to control P loss in these TP vulnerable zones.

关键词： Chinese Ecosystem Research Network

Changes of crystallinity and spherulite morphology in isotactic polypropylene after rolling and heat treatment

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 University of Science and Technology Beijing 2008年第4期15卷 514-520页

作者： juan Jia Weimin Mao dierk Raabe School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China Max-Planck-Institut fur Eisenforschung Max-Planck-Str. 1 Düsseldorf 40237 Germany

The spherulite morphology of the rolled and subsequent heat-treated isotactic polypropylene （iPP） was observed by polarized microscopy, and the crystallinity evolution of materials was also measured by the wide angle X-ray scattering （WAXS）. Rolling led to the oblate spherulites in the deformed iPP samples. The sheared crystalline lamellae broke apart into sets of crystalline blocks during rolling. As a result, the crystallinity of the iPP samples was greatly reduced during deformation, which induced the unclear spherulites and spherulite boundaries. Subsequent heat treatment resulted in the strong reerystallization of the rolled iPP samples. But the recrystaUizatinn in this work only meant the rearrangement of the macromolecule along the unbroken crystalline lamellae and the existing small crystalline blocks in the deformed spherulites. Heat treatment did not change the shape of the spherulites formed during deformation. The recrystallization also resulted in very clear spherulites and spherulite boundaries.

关键词： isotaetic polypropylene (iPP) rolling heat treatment X-ray diffraction crystallinity spherulites

Synthesis, Crystal Structure and Properties of a New Cd(II) Complex Based on Mixed 5-Hydroxy-isophthalic Acid and 1-(1H-imidazol-4-yl)-3-(4H-tetrazol-5-yl)benzene Ligands

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2015年第6期34卷 899-905页

作者： HU Zhi-Yong ZHU juan-juan CHEN Shui-Sheng QIAO Rui College of Chemistry & Chemical Engineering Fuyang Normal College

A new coordination polymer [Cd2（5-IPA）（HL）2（H20）2]＇4H20 （1） was prepared under hydrothermal conditions based on 5-hydroxy-isophthalic acid （5-H2IPA） with multi-N-donor ligand 1-（1H-imidazol-4-yl）-3-（4H-tetrazol-5-yl）benzene （H2L）. The complex was characterized by IR spectroscopy, TGA, X-ray powder and single-crystal diffraction. It crystallizes in the monoclinic system, space group C2/e with a = 23.6291（18）, b = 9.9847（8）, c = 17.7244（14） A, fl = 124.6180（10）°, V = 3441.4（5） A3, Z = 4, C28H30N12O11Cd2, Mr = 935.44, dc = 1.805 g/cm^3,μ= 1.313 mm^-1, S = 1.055, F（000） = 1864, the final R = 0.049 and wR = 0.1315 for 2985 observed reflections （I 〉 2σ（I））. The central metal Cd（II） atoms with octahedral coordination geometry are six-coordinated by three oxygen and three nitrogen atoms. The HL- ligands from the deprotonated HzL connect Cd（II） atoms to form two-dimensional （2d） double-layer fes networks which are further pillared by 5-IPA2- ligands into a rare binodal （3, 4）-connected three-dimensional （3d） architecture with a （4·6·8）（4·62·83） fse-3,4-C2/c topology. Solid state luminescent property and sorption property of 1 have been investigated.

关键词： synthesis crystal structure luminescence property

Characteristics and sources of polycyclic aromatic hydrocarbons in impervious surface run-off in an urban area in Shanghai, China

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2013年第10期14卷 751-759页

作者： juan HOU Lu BIAN Tian LI State Key Laboratory of Pollution Control and Resource Reuse Tongji University

Rainwater and run-off from three kinds of impervious surface in the Shanghai urban area,China were *** aromatic hydrocarbons(PAHs) were measured in the samples,and their sources were *** mean sum of the 16 PAH concentrations measured in rainwater and run-offs from ceramic tiles,asphalt roofs,and asphalt roads were 873,1404,1743,and 4023 ng/L,*** PAH concentrations found in this study were moderate compared to PAH concentrations found in run-offs in other *** main PAH components in the rainwater,roof run-off,and asphalt road run-off samples were 3-ring PAHs,3–4-ring PAHs,and 4–6-ring PAHs,*** apportionment results indicated that combustion(47.4%–55.5%) and vehicular emissions(30.5%–33.0%) were the major contributors to PAHs in roof *** emissions were the most significant contributors to asphalt road run-off(47.2%),followed by combustion(23.5%),and petroleum(16.3%).Vehicular emissions and coal and natural gas combustion are therefore the most significant sources of PAHs in run-off from impervious surfaces in the Shanghai urban area.

关键词： Polycyclic aromatic hydrocarbons(PAHs) Impervious surface Run-off pollution Source apportionment

Semantic Segmentation in Remote Sensing through A Heavy Feature Reuse Based Network

在线全文

学校读者我要写书评

暂无评论

Semantic Segmentation in Remote Sensing through A Heavy Feat...

作者： Eric Rene Narciso molina 上海交通大学

学位级别：硕士

Semantic segmentation is the task of clustering pixels into an ob-ject *** the field of remote sensing semantic segmentation has wide applications ranging from scene cover classification to change detection for scene *** the success of deep learning algorithms for classification tasks,there has been much work to apply convolutional neu-ral networks in remote sensing with much ***,feature ex-traction of high resolution remote sensing imagery poses a challenge when applying such *** particular,there is a need to extract high level features while maintaining an objects resolution in the networks feature *** masters thesis proposes an efficient deep fully convolution architecture that obtains high level features without loss of spatial resolu-tion by replacing the standard convolutional layers in U-Net with dense residual *** stacking identity blocks,we allow the input to flow through the network at every proceeding *** network is termed dRU-Net,and is shown to outperform standard *** further add to this by using a pyramid pooling layer as a global context prior before the decoding layers of our *** additional step further improves this *** then perform several analysis of different data set,and show an application of fully convolutional networks in the context of radar images.

关键词：

Federated Network Intelligence Orchestration for Scalable and Automated FL-Based Anomaly detection in B5G Networks

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2024年第7期80卷 163-193页

作者： Pablo Fernández Saura José M.Bernabé Murcia Emilio García de la Calera molina Alejandro molina Zarca Jorge Bernal Bernabé Antonio F.Skarmeta Gómez department of Information and Communications Engineering University of MurciaMurcia30100Spain University Center of defense Spanish Air Force AcademySan Javier30720Spain

The management of network intelligence in Beyond 5G(B5G)networks encompasses the complex challenges of scalability,dynamicity,interoperability,privacy,and *** are essential steps towards achieving the realization of truly ubiquitous Artificial Intelligence(AI)-based analytics,empowering seamless integration across the entire Continuum(Edge,Fog,Core,Cloud).This paper introduces a Federated Network Intelligence Orchestration approach aimed at scalable and automated Federated Learning(FL)-based anomaly detection in *** leveraging a horizontal Federated learning approach based on the FedAvg aggregation algorithm,which employs a deep autoencoder model trained on non-anomalous traffic samples to recognize normal behavior,the systemorchestrates network intelligence to detect and prevent *** into a B5G Zero-touch Service Management(ZSM)aligned Security Framework,the proposal utilizes multi-domain and multi-tenant orchestration to automate and scale the deployment of FL-agents and AI-based anomaly detectors,enhancing reaction capabilities against *** proposed FL architecture can be dynamically deployed across the B5G Continuum,utilizing a hierarchy of Network Intelligence orchestrators for real-time anomaly and security threat *** includes FL enforcement operations for interoperability and extensibility,enabling dynamic deployment,configuration,and reconfiguration on *** validation of the proposed solution was conducted through dynamic orchestration,FL,and real-time anomaly detection processes using a practical test *** of key performance metrics,leveraging the 5G-NIdd dataset,demonstrates the system’s capability for automatic and near real-time handling of anomalies and attacks,including real-time network monitoring and countermeasure implementation for mitigation.

关键词： Federated learning 6G orchestration anomaly detection security policy

Laboratory evaluation of the GreenSeeker^(TM) handheld optical sensor to variations in orientation and height above canopy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Agricultural and Biological Engineering 2012年第1期5卷 43-47页

作者： daniel E Martin juan d Lopez Jr Yubin Lan USdA-ARS Southern Plains Agricultural Research CenterCollege StationTexas 77845USA

Handheld optical sensors recently have been introduced to the agricultural *** handheld sensors are able to provide operators with Normalized difference Vegetative Index(NdVI)data when cloud cover prevents acquisition of satellite or aerial *** research addressed the sensitivity of the GreenSeeker handheld optical sensor to changes in orientation and height above a ryegrass *** boxes were oriented both parallel and perpendicular to the light beam from the sensor head and heights of 30.5 cm(12”),61.0 cm(24”),91.5 cm(36”),122 cm(48”)and 152 cm(60”)were *** indicated that the sensor was highly sensitive(Pd orientation of the sensor relative to the *** should follow manufacturer’s recommendations on operating height range of 81-122 cm and orient the sensor head in-line with the target to obtain maximum signal response.

关键词： remote sensing NdVI GreenSeeker handheld optical sensor spectral reflectance

High prevalence of viable Mycobacterium avium subspecies paratuberculosis in Crohn's disease

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 Gastroenterology 2010年第36期16卷 4558-4563页

作者： juan L Mendoza Amparo San-Pedro Esther Culebras Raquel Cíes Carlos Taxonera Raquel Lana Elena Urcelay Fernando de la Torre juan J Picazo Manuel díaz-Rubio department of Gastroenterology Hospital Clinico San Carlos28040 MadridSpain department of Clinical Microbiology Hospital Clinico San Carlos28040 MadridSpain department of Internal Medicine Hospital Clinico San Carlos28040 MadridSpain department of Immunology Hospital Clinico San Carlos28040 MadridSpain

AIM:To examine the detection rate of viable Mycobacterium avium subspecies paratuberculosis(MAP) in patients with inflammatory bowel disease [Crohn's disease(Cd) and ulcerative colitis(UC)].METHOdS:Thirty patients with Cd(15 with at least one NOd2/CARd15 mutation),29 with UC,and 10 with no inflammatory bowel disease(IBd).were tested for MAP by polymerase chain reaction(specific IS900 fragment) and blood ***:MAP dNA was detected in all original blood samples and 8-wk blood cultures(Cd,UC and non-IBd).Positive MAP dNA status was confirmed by dot blot *** 69 cultures were negative by acid-fast Ziehl-Neelsen *** MAP,in spheroplast form,was isolated from the 18-mo blood cultures of all 30 Cd patients,one UC patient,and none of the non-IBd *** association was found between positive MAP cultures and use of immunosuppressive drugs or Cdassociated single nucleotide ***:MAP is widely present in our area and MAP dNA can be recovered from the blood of Cd,UC and non-IBd ***,MAP spheroplasts were only found in Cd patients.

关键词： Mycobacterium avium subspecies paratuberculosis Crohn’s disease Ulcerative colitis Inflammatory bowel disease Polymerase chain reaction Genetic susceptibility