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4661
Study on the Preparation and Corrosion Properties of Hydrotalcite Composite Permeation Layer via Plasma Electrolytic Carbonitriding
Published 2024-11-01“…In order to improve the corrosion resistance of steel materials treated by plasma electrolytic infiltration,annealed 20 steel was used as the experimental substrate.Micro-nanopores formed during the plasma electrolytic carbonitriding process were utilized as containers to load magnesium-iron layered double hydroxides (Mg-Fe-LDHs) as a corrosion inhibitor,and the effects of Mg-Fe-LDHs on the corrosion performance of 20 steel were investigated.First,formamide was used as the carbon and nitrogen source,and KCl was used as the conductive salt.These components were mixed with deionized water to form an electrolyte.Then,the samples were treated at a constant DC pulse voltage of 220 V for 9 min to produce a carbonitrided layer (denoted as PEC/N samples).Subsequently,the PEC/N samples were immersed in a Mg-Fe-LDHs precursor solution containing urea,MgSO4 and Na2CO3,and hydrothermally crystallized at 140 ℃for 10 h to obtain a composite infiltration layer (denoted as PEC/N-LDHs samples).The performance of the composite infiltration layers was analyzed using a microhardness tester,scanning electron microscopy (SEM),X-ray diffraction (XRD) and electrochemical testing.Results showed that the microhardness of the composite infiltration layer reached approximately 900 HV,which was 4.6 times higher than that of the substrate.The carbonitrided layer of the PEC/N samples was about 20 μm,with a smooth and flat cross-section but a rough,porous and honeycomb-like surface.After hydrothermal synthesis of LDHs,the surface became smooth,lacking a visible honeycomb structure,and a large number of flake-like crystalline deposits appeared on the surface.The XRD spectra of the PEC/N samples showed absorption peaks corresponding to Fe3C,Fe5C2,α-Fe and Fe3N phases.After the in-situ loading of Mg-Fe-LDHs,new absorption peaks corresponding to the (003),(006) and (009) crystal planes of Mg-Fe-LDHs appeared in the XRD spectra of the PEC/N-LDHs samples.Combined with SEM morphology analysis,it was confirmed that Mg-Fe-LDHs were successfully loaded,presenting a flake-like structure.Compared with 20 steel,the PEC/N samples exhibited improved corrosion potential (Ecorr) and corrosion current density (Jcorr),reaching-0.451 V and 75.22 μA/cm2,respectively,although the lowfrequency impedance modulus (|Z |0.01 Hz) showed no significant increase,reaching only 998.5 Ω·cm2.After loading Mg-Fe-LDHs,the PEC/N-LDHs samples demonstrated further improvements,with Ecorr,Jcorr and |Z |0.01 Hz reaching-0.355 V,39.11 μA/cm2 and 6 586.0 Ω·cm2,respectively,showing significant enhancement compared to both 20 steel and PEC/N samples.These results indicated that plasma electrolytic carbonitriding treatment of 20 steel could produce a carbonitrided layer with high hardness.Additionally,the hydrothermal loading of LDHs further improved the corrosion resistance of the composite infiltration layer without affecting its hardness.The PEC/N-LDHs composite infiltration layer thus achieved both high hardness and superior corrosion resistance.…”
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4662
Immune status changes in patients with phlegmon in the maxillofacial region relation with purulent process prevalence
Published 2016-01-01“…Serum IL4 concentration was increased only in patient with pyoinflammatory changes in more than one area. …”
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4663
The possibility of using the DKS-AT1123 dosimeter for radiation monitoring of medical electron accelerators with the energy of more than 10 MeV
Published 2024-07-01“…Over the past 4 years, their number has increased 2.5 times. These installations contain pulsed electron accelerators that generate pulsed bremsstrahlung radiation with a maximum energy from 6 to 21 MeV. …”
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4664
Novel Nanozyme-Based Multicomponent in situ Hydrogels with Antibacterial, Hypoxia-Relieving and Proliferative Properties for Promoting Gastrostomy Tube Tract Maturation
Published 2025-01-01“…The antibacterial efficiency of the MO-HPA1.0 group on E. coli and S. aureus increased by about 40.1% and 55.6% respectively, compared to the MO-HPA0.5 group. …”
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4665
Design and Synthesis of Bis-Chalcones as Curcumin Simplified Analogs and Assessment of Their Antiproliferative Activities Against Human Lung Cancer Cells and <i>Trypanosoma cruzi</...
Published 2025-03-01“…<b>Background: </b>Anticancer therapies represent the primary treatment option for a significant number of cancer patients globally; however, many of these treatments are associated with severe side effects as they target molecular structures present in both cancerous and healthy cells. In a similar context, the treatment of Chagas disease, a neglected tropical illness, is hindered by the high toxicity of the currently available drugs. …”
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4666
Direct oral penicillin challenge in secondary care with low-risk patients: the SPACE mixed-methods study with cost-effectiveness analysis
Published 2025-04-01“…To explore practical aspects of implementing this de-labelling programme in secondary care by investigating factors, such as organisational context, treatment pathway, protocol implementation, time taken and resources. …”
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4667
Neutralizing Antibody Spectrum in COVID-19 Patients who Became Ill During the Circulation of Different SARS-CoV-2 Variants
Published 2024-11-01“…Thus, a fraction of people, regardless of age, who became infected in 2020-2021 have an antibody spectrum capable of neutralizing current and possibly related SARS-CoV-2 variants that will emerge in the near future. …”
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4668
Life cycle assessment of polyethylene packaging and alternatives on the European market
Published 2025-06-01“…The assessment covered the material and production phase to end-of-life (EoL), based on current conditions in Europe (EU27 + UK). The potential impacts from the packaged product's production and usage phase were excluded. …”
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4669
Improving the charge transport of perovskite nanocrystal light-emitting-diodes through Benzylammonium ligand exchange
Published 2025-03-01“…As results, the LHP LEDs using these ligand-exchanged LHP NCs, achieving a notable increase maximum current efficiency (CEmax,) to 5.88 %, 19.5 cd A-1 at BA bromide, and 5.50 %, 16.6 cd A-1 at BA chloride, compared to devices using pristine LHP NCs, which achieved external quantum efficiency (EQE) 2.4 %, CEmax 7.8 cd A-1.…”
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4670
Mechanisms of hepatic dysfunction in Nile tilapia (Oreochromis niloticus) fed a high-fava bean (Vicia faba L.) diet
Published 2025-09-01“…Fava bean is currently utilized as a specialized feed ingredient to enhance the muscle texture of fish. …”
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4671
Harnessing Facebook to Investigate Real-World Mentions of Adverse Events of Glucagon-Like Peptide-1 Receptor Agonist (GLP-1 RA) Medications: Observational Study of Facebook Posts F...
Published 2025-07-01“… Abstract BackgroundIn recent years, there has been a dramatic increase in the popularity and use of glucagon-like peptide-1 receptor agonists (GLP-1 RAs) for weight loss. …”
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4672
Transmission network and phylogenetic analysis reveal older male-centered transmission of CRF01_AE and CRF07_BC in Guangxi, China
Published 2023-12-01“…In China, the number of newly reported HIV infections in older people is increasing rapidly. However, clear information on the impact of older people on HIV transmission is limited. …”
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4673
Multi-method evaluation of volatile flavor compounds in five kiwifruit varieties
Published 2025-07-01“…[Objective] Fruit wine, as a food of fruit processing, not only enhances the flavor diversity of kiwifruit but also increases its biological activity, leading to the production of kiwifruit wine with a unique flavor, combined fruit with wine aromas, and rich nutrition. …”
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4674
The Characteristics of Chitosan Derived from Lobster Shells and its Effect on Fungi Activity and Water Stability of Lobster Pellets
Published 2025-02-01“…Abstract Tropical rock lobster aquaculture is a lucrative industry that is currently limited by the lack of appropriate formulated feed. …”
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4675
The most common errors in automatic ECG interpretation
Published 2025-05-01“…Results of our studies should increase the caution among clinicians not to rely fully on the automated analysis. …”
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4676
“Locality – Adaptation” Research of Hydropower Resettlement Communities in the Jinsha River Basin: A Case Study of Ludila Hydropower Station
Published 2025-04-01“…ObjectiveWithin human – environment systems, river basins constitute the earliest geographical units of human activity and currently represent the most critical zones of strained human – environment interactions. …”
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4677
On the added value of sequential deep learning for the upscaling of evapotranspiration
Published 2025-08-01“…In particular, we investigate three questions regarding the performance of the sequential models compared to the non-sequential models in the context of spatial upscaling: (a) whether they lead to more realistic and robust global and regional ET, (b) whether they are able to capture the temporal dynamics of ET better, and (c) how robust they are to the covariate setup and training data subsets.…”
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4678
Height Propagation Law and Controlling Strategies of Acid Fractures in Carbonate Gas Reservoirs With Bottom Water Layer Under Different Stress Profiles
Published 2025-01-01“…Acid fracturing is currently employed to develop the carbonate gas reservoir in the second section of the Dengying Formation at the Anyue Gas Field, Sichuan Basin. …”
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4679
Rapid diagnosis of Mycoplasma pneumoniae and prediction of antibiotic resistance by nanopore adaptive sampling
Published 2024-12-01“…However, clinical samples often contain a considerable amount of human DNA, potentially masking pathogen data. …”
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4680
Dealing with Complexity – Knowledge, design, and management of the built environment
Published 2024-12-01“…How do we place knowledge and learning into a system to better understand the current era’s multidimensional, fundamental, and global issues in their irreducible complexity? …”
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