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1.
Biomaterials ; 312: 122713, 2025 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-39084096

RESUMO

Traditional bioreactor systems involve the use of three-dimensional (3D) scaffolds or stem cell aggregates, limiting the accessibility to the production of cell-secreted biomolecules. Herein, we present the use a pulse electromagnetic fields (pEMFs)-assisted wave-motion bioreactor system for the dynamic and scalable culture of human bone marrow-derived mesenchymal stem cells (hBMSCs) with enhanced the secretion of various soluble factors with massive therapeutic potential. The present study investigated the influence of dynamic pEMF (D-pEMF) on the kinetic of hBMSCs. A 30-min exposure of pEMF (10V-1Hz, 5.82 G) with 35 oscillations per minute (OPM) rocking speed can induce the proliferation (1 × 105 â†’ 4.5 × 105) of hBMSCs than static culture. Furthermore, the culture of hBMSCs in osteo-induction media revealed a greater enhancement of osteogenic transcription factors under the D-pEMF condition, suggesting that D-pEMF addition significantly boosted hBMSCs osteogenesis. Additionally, the RNA sequencing data revealed a significant shift in various osteogenic and signaling genes in the D-pEMF group, further suggesting their osteogenic capabilities. In this research, we demonstrated that the combined effect of wave and pEMF stimulation on hBMSCs allows rapid proliferation and induces osteogenic properties in the cells. Moreover, our study revealed that D-pEMF stimuli also induce ROS-scavenging properties in the cultured cells. This study also revealed a bioactive and cost-effective approach that enables the use of cells without using any expensive materials and avoids the possible risks associated with them post-implantation.


Assuntos
Reatores Biológicos , Campos Eletromagnéticos , Células-Tronco Mesenquimais , Osteogênese , Humanos , Células-Tronco Mesenquimais/citologia , Células-Tronco Mesenquimais/metabolismo , Perfilação da Expressão Gênica , Proliferação de Células , Diferenciação Celular , Células Cultivadas , Transcriptoma
2.
Biomaterials ; 312: 122709, 2025 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-39094521

RESUMO

Sonodynamic therapy (SDT) relies heavily on the presence of oxygen to induce cell death. Its effectiveness is thus diminished in the hypoxic regions of tumor tissue. To address this issue, the exploration of ultrasound-based synergistic treatment modalities has become a significant research focus. Here, we report an ultrasonic cavitation effect enhanced sonodynamic and 1208 nm photo-induced cancer treatment strategy based on thermoelectric/piezoelectric oxygen-defect bismuth oxychloride nanosheets (BNs) to realize the high-performance eradication of tumors. Upon ultrasonic irradiation, the local high temperature and high pressure generated by the ultrasonic cavitation effect combined with the thermoelectric and piezoelectric effects of BNs create a built-in electric field. This facilitates the separation of carriers, increasing their mobility and extending their lifetimes, thereby greatly improving the effectiveness of SDT and NIR-Ⅱ phototherapy on hypoxia. The Tween-20 modified BNs (TBNs) demonstrate ∼88.6 % elimination rate against deep-seated tumor cells under hypoxic conditions. In vivo experiments confirm the excellent antitumor efficacy of TBNs, achieving complete tumor elimination within 10 days with no recurrences. Furthermore, due to the high X-ray attenuation of Bi and excellent NIR-Ⅱ absorption, TBNs enable precise cancer diagnosis through photoacoustic (PA) imaging and computed tomography (CT).


Assuntos
Bismuto , Neoplasias da Mama , Oxigênio , Terapia por Ultrassom , Bismuto/química , Feminino , Animais , Neoplasias da Mama/terapia , Terapia por Ultrassom/métodos , Oxigênio/química , Camundongos , Camundongos Endogâmicos BALB C , Humanos , Linhagem Celular Tumoral , Raios Infravermelhos , Nanoestruturas/química , Fototerapia/métodos
3.
J Environ Sci (China) ; 149: 221-233, 2025 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-39181637

RESUMO

Catalytic reduction of nitrate over bimetallic catalysts has emerged as a technology for sustainable treatment of nitrate-containing groundwater. However, the structure of bimetallic has been much less investigated for catalyst optimization. Herein, two main types of Pd-Cu bimetallic nanocrystal structures, heterostructure and intermetallic, were prepared and characterized using high-resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The results show that two individual Pd and Cu nanocrystals with a mixed interface exist in the heterostructure nanocrystals, while Pd and Cu atoms are uniformly distributed across the intermetallic Pd-Cu nanocrystals. The catalytic nitrate reduction experiments were carried out in a semibatch reactor under constant hydrogen flow. The nitrate conversion rate of the heterostructure Pd-Cu nanocrystals supported on α-Al2O3, γ-Al2O3, SBA-15, and XC-72R exhibited 3.82-, 6.76-, 4.28-, 2.44-fold enhancements relative to the intermetallic nanocrystals, and the nitrogen and nitrite were the main products for the heterostructure and intermetallic Pd-Cu nanocrystals, respectively. This indicates that the catalytic nitrate reduction over Pd-Cu catalyst is sensitive to the bimetallic structures of the catalysts, and heterostructure bimetallic nanocrystals exhibit better catalytic performances on both the activity and selectivity, which may provide new insights into the design and optimization of catalysts to improve catalytic activity and selectivity for nitrate reduction in water.


Assuntos
Cobre , Nitratos , Oxirredução , Paládio , Catálise , Cobre/química , Paládio/química , Nitratos/química , Nanopartículas Metálicas/química , Nanopartículas/química , Poluentes Químicos da Água/química , Modelos Químicos
4.
J Environ Sci (China) ; 149: 278-287, 2025 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-39181642

RESUMO

The arsenic (As) release from sediments in great lakes is affected by various factors. In this study, the characteristics of As release from sediments was investigated, and the As sources and sinks with the strengths in sediments from different areas (grass-type, algae-type, and grass-algae alternation areas) in great shallow lakes (Taihu Lake, China) were analyzed, and the influence of P competition in the process of As release was also studied. The results showed that changing trend of the values of equilibrium As concentration in sediments were consistent with the regional changes (0 to 28.12 µg/L), and the sediments from algae-type areas had the higher values. The sediments from western lake and northwest lake bay were a strong As and a weak P source, and the north lake bay had the opposite trend of these two regions. Intense P source competition with As from the sediments occurred in algae-type areas. The grass-type areas had strong As and P retention capacities, indicating a sink role of sediment with high As and P sorption capacities. The degree of As and P saturation had similar trend in sediments, and the grass-type areas had the higher values, 18.3%-21.4% and 15.31%-20.34%, respectively. Contribution analysis results showed that most of As release contribution was from the bottom (30-50 cm) sediments, and the surface (0-10 cm) sediments from algae-type areas contributed more to the overlying water than other region.


Assuntos
Arsênio , Monitoramento Ambiental , Sedimentos Geológicos , Lagos , Fósforo , Poluentes Químicos da Água , Lagos/química , Fósforo/análise , Arsênio/análise , Sedimentos Geológicos/química , Poluentes Químicos da Água/análise , China , Poaceae
5.
J Environ Sci (China) ; 149: 46-56, 2025 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-39181658

RESUMO

Phthalic acid esters (PAEs) are a group of compounds widespread in the environment. To investigate the occurrence and accumulation characteristics of PAEs, surface water samples were collected from the Three Gorges Reservoir area, China. The total concentrations of 11 analyzed PAEs (∑11PAEs) in the collected water samples ranging from 197.7 to 1,409.3 ng/L (mean ± IQR: 583.1 ± 308.4 ng/L). While DEHP was the most frequently detected PAE, DnBP and DnNP were the most predominant PAEs in the analyzed water samples with a mean contribution of 63.3% of the ∑11PAEs. The concentrations of the ∑11PAEs in the water samples from the upper reaches of the Yangtze River were significantly higher than those from the middle reaches. To better understand the transport and fate of the PAEs, seven detected PAEs were modeled by Quantitative Water Air Sediment Interaction (QWASI). The simulated and measured values were close for most PAEs, and differences are within one order of magnitude even for the worst one. For all simulated PAEs, water and particle inflow were main sources in the reservoir, whereas water outflow and degradation in water were important removal pathways. The contribution ratios of different sources/losses varied from PAEs, depending on their properties. The calculated risk quotients of DnNP in the Three Gorges Reservoir area whether based on monitoring or simulating results were all far exceeded the safety threshold value, implying the occurrence of this PAE compound may cause potential adverse effects for the aquatic ecology of the Three Gorges Reservoir area.


Assuntos
Monitoramento Ambiental , Ésteres , Ácidos Ftálicos , Poluentes Químicos da Água , Ácidos Ftálicos/análise , China , Poluentes Químicos da Água/análise , Ésteres/análise , Rios/química , Modelos Químicos
6.
J Environ Sci (China) ; 149: 488-499, 2025 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-39181661

RESUMO

Eutrophic shallow lakes are generally considered as a contributor to the emission of nitrous oxide (N2O), while regional and global estimates have remained imprecise. This due to a lack of data and insufficient understanding of the multiple contributing factors. This study characterized the spatiotemporal variability in N2O concentrations and N2O diffusive fluxes and the contributing factors in Lake Wuliangsuhai, a typical shallow eutrophic and seasonally frozen lake in Inner Mongolia with cold and arid climate. Dissolved N2O concentrations of the lake exhibited a range of 4.5 to 101.2 nmol/L, displaying significant spatiotemporal variations. The lowest and highest concentrations were measured in summer and winter, respectively. The spatial distribution of N2O flux was consistent with that of N2O concentrations. Additionally, the hotspots of N2O emissions were detected within close to the main inflow of lake. The wide spatial and temporal variation in N2O emissions indicate the complexity and its relative importance of factors influencing emissions. N2O emissions in different lake zones and seasons were regulated by diverse factors. Factors influencing the spatial and temporal distribution of N2O concentrations and fluxes were identified as WT, WD, DO, Chl-a, SD and COD. Interestingly, the same factor demonstrated opposing effects on N2O emission in various seasons or zones. This research improves our understanding of N2O emissions in shallow eutrophic lakes in cold and arid areas.


Assuntos
Monitoramento Ambiental , Lagos , Óxido Nitroso , Estações do Ano , Óxido Nitroso/análise , Lagos/química , China , Poluentes Atmosféricos/análise , Eutrofização , Análise Espaço-Temporal , Poluentes Químicos da Água/análise
7.
J Environ Sci (China) ; 147: 153-164, 2025 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-39003036

RESUMO

Heavy metal(loid) (HM) pollution in agricultural soils has become an environmental concern in antimony (Sb) mining areas. However, priority pollution sources identification and deep understanding of environmental risks of HMs face great challenges due to multiple and complex pollution sources coexist. Herein, an integrated approach was conducted to distinguish pollution sources and assess human health risk (HHR) and ecological risk (ER) in a typical Sb mining watershed in Southern China. This approach combines absolute principal component score-multiple linear regression (APCS-MLR) and positive matrix factorization (PMF) models with ER and HHR assessments. Four pollution sources were distinguished for both models, and APCS-MLR model was more accurate and plausible. Predominant HM concentration source was natural source (39.1%), followed by industrial and agricultural activities (23.0%), unknown sources (21.5%) and Sb mining and smelting activities (16.4%). Although natural source contributed the most to HM concentrations, it did not pose a significant ER. Industrial and agricultural activities predominantly contributed to ER, and attention should be paid to Cd and Sb. Sb mining and smelting activities were primary anthropogenic sources of HHR, particularly Sb and As contaminations. Considering ER and HHR assessments, Sb mining and smelting, and industrial and agricultural activities are critical sources, causing serious ecological and health threats. This study showed the advantages of multiple receptor model application in obtaining reliable source identification and providing better source-oriented risk assessments. HM pollution management, such as regulating mining and smelting and implementing soil remediation in polluted agricultural soils, is strongly recommended for protecting ecosystems and humans.


Assuntos
Agricultura , Antimônio , Monitoramento Ambiental , Metais Pesados , Mineração , Poluentes do Solo , Antimônio/análise , Medição de Risco , Metais Pesados/análise , Poluentes do Solo/análise , Monitoramento Ambiental/métodos , China , Solo/química
8.
J Environ Sci (China) ; 147: 342-358, 2025 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-39003052

RESUMO

Secondary iron-sulfate minerals such as jarosite, which are easily formed in acid mine drainage, play an important role in controlling metal mobility. In this work, the typical iron-oxidizing bacterium Acidithiobacillus ferrooxidans ATCC 23270 was selected to synthesize jarosite in the presence of antimony ions, during which the solution behavior, synthetic product composition, and bacterial metabolism were studied. The results show that in the presence of Sb(V), Fe2+ was rapidly oxidized to Fe3+ by A. ferrooxidans and Sb(V) had no obvious effect on the biooxidation of Fe2+ under the current experimental conditions. The presence of Sb(III) inhibited bacterial growth and Fe2+ oxidation. For the group with Sb(III), products with amorphous phases were formed 72 hr later, which were mainly ferrous sulfate and pentavalent antimony oxide, and the amorphous precursor was finally transformed into a more stable crystal phase. For the group with Sb(V), the morphology and structure of jarosite were changed in comparison with those without Sb. The biomineralization process was accompanied by the removal of 94% Sb(V) to form jarosite containing the Fe-Sb-O complex. Comparative transcriptome analysis shows differential effects of Sb(III) and Sb(V) on bacterial metabolism. The expression levels of functional genes related to cell components were much more downregulated for the group with Sb(III) but much more regulated for that with Sb(V). Notably, cytochrome c and nitrogen fixation-relevant genes for the A.f_Fe2+_Sb(III) group were enhanced significantly, indicating their role in Sb(III) resistance. This study is of great value for the development of antimony pollution control and remediation technology.


Assuntos
Acidithiobacillus , Antimônio , Sulfatos , Acidithiobacillus/metabolismo , Acidithiobacillus/efeitos dos fármacos , Sulfatos/metabolismo , Compostos Férricos , Oxirredução , Mineração , Ferro/metabolismo
9.
J Environ Sci (China) ; 147: 370-381, 2025 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-39003055

RESUMO

Two strains of Fe/Mn oxidizing bacteria tolerant to high concentrations of multiple heavy metal(loid)s and efficient decontamination for them were screened. The surface of the bio-Fe/Mn oxides produced by the oxidation of Fe(II) and Mn(II) by Pseudomonas taiwanensis (marked as P4) and Pseudomonas plecoglossicida (marked as G1) contains rich reactive oxygen functional groups, which play critical roles in the removal efficiency and immobilization of heavy metal(loid)s in co-contamination system. The isolated strains P4 and G1 can grow well in the following environments: pH 5-9, NaCl 0-4%, and temperature 20-30°C. The removal efficiencies of Fe, Pb, As, Zn, Cd, Cu, and Mn are effective after inoculation of the strains P4 and G1 in the simulated water system (the initial concentrations of heavy metal(loid) were 1 mg/L), approximately reaching 96%, 92%, 85%, 67%, 70%, 54% and 15%, respectively. The exchangeable and carbonate bound As, Cd, Pb and Cu are more inclined to convert to the Fe-Mn oxide bound fractions in P4 and G1 treated soil, thereby reducing the phytoavailability and bioaccessible of heavy metal(loid)s. This research provides alternatives method to treat water and soil containing high concentrations of multi-heavy metal(loid)s.


Assuntos
Metais Pesados , Poluentes do Solo , Poluentes Químicos da Água , Poluentes Químicos da Água/metabolismo , Poluentes Químicos da Água/análise , Poluentes do Solo/metabolismo , Oxirredução , Pseudomonas/metabolismo , Manganês , Ferro/química , Ferro/metabolismo , Solo/química , Biodegradação Ambiental , Microbiologia do Solo
10.
J Environ Sci (China) ; 147: 607-616, 2025 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-39003075

RESUMO

This study embarks on an explorative investigation into the effects of typical concentrations and varying particle sizes of fine grits (FG, the involatile portion of suspended solids) and fine debris (FD, the volatile yet unbiodegradable fraction of suspended solids) within the influent on the mixed liquor volatile suspended solids (MLVSS)/mixed liquor suspended solids (MLSS) ratio of an activated sludge system. Through meticulous experimentation, it was discerned that the addition of FG or FD, the particle size of FG, and the concentration of FD bore no substantial impact on the pollutant removal efficiency (denoted by the removal rate of COD and ammonia nitrogen) under constant operational conditions. However, a notable decrease in the MLVSS/MLSS ratio was observed with a typical FG concentration of 20 mg/L, with smaller FG particle sizes exacerbating this reduction. Additionally, variations in FD concentrations influenced both MLSS and MLVSS/MLSS ratios; a higher FD concentration led to an increased MLSS and a reduced MLVSS/MLSS ratio, indicating FD accumulation in the system. A predictive model for MLVSS/MLSS was constructed based on quality balance calculations, offering a tool for foreseeing the MLVSS/MLSS ratio under stable long-term influent conditions of FG and FD. This model, validated using data from the BXH wastewater treatment plant (WWTP), showcased remarkable accuracy.


Assuntos
Esgotos , Eliminação de Resíduos Líquidos , Eliminação de Resíduos Líquidos/métodos , Tamanho da Partícula , Poluentes Químicos da Água/análise
11.
J Environ Sci (China) ; 147: 538-549, 2025 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-39003069

RESUMO

The multi-soil-layering (MSL) systems is an emerging solution for environmentally-friendly and cost-effective treatment of decentralized rural domestic wastewater. However, the role of the seemingly simple permeable layer has been overlooked, potentially holding the breakthroughs or directions to addressing suboptimal nitrogen removal performance in MSL systems. In this paper, the mechanism among diverse substrates (zeolite, green zeolite and biological ceramsite) coupled microorganisms in different systems (activated bacterial powder and activated sludge) for rural domestic wastewater purification was investigated. The removal efficiencies performed by zeolite coupled with microorganisms within 3 days were 93.8% for COD, 97.1% for TP, and 98.8% for NH4+-N. Notably, activated sludge showed better nitrification and comprehensive performance than specialized nitrifying bacteria powder. Zeolite attained an impressive 89.4% NH4+-N desorption efficiency, with a substantive fraction of NH4+-N manifesting as exchanged ammonium. High-throughput 16S rRNA gene sequencing revealed that aerobic and parthenogenetic anaerobic bacteria dominated the reactor, with anaerobic bacteria conspicuously absent. And the heterotrophic nitrification-aerobic denitrification (HN-AD) process was significant, with the presence of denitrifying phosphorus-accumulating organisms (DPAOs) for simultaneous nitrogen and phosphorus removal. This study not only raises awareness about the importance of the permeable layer and enhances comprehension of the HN-AD mechanism in MSL systems, but also provides valuable insights for optimizing MSL system construction, operation, and rural domestic wastewater treatment.


Assuntos
Eliminação de Resíduos Líquidos , Eliminação de Resíduos Líquidos/métodos , Nitrificação , Nitrogênio/metabolismo , Solo/química , Desnitrificação , Águas Residuárias/química , Esgotos/microbiologia , Microbiologia do Solo , Zeolitas/química , Fósforo/metabolismo , Reatores Biológicos/microbiologia , Bactérias/metabolismo
12.
J Environ Sci (China) ; 148: 107-115, 2025 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-39095149

RESUMO

The evaluation of toxicity related to polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs) and dioxin-like polychlorinated biphenyls (DL-PCBs) is crucial for a comprehensive risk assessment in real-world exposure scenarios. This study employed a controlled feeding experiment to investigate the metabolic effects of dioxin-like compounds (DLCs) on laying hens via feed exposure. Diets enriched with two concentrations (1.17 and 5.13 pg toxic equivalents (TEQ)/g dry weight (dw)) were administered over 14 days, followed by 28 days of clean feed. Metabolomics analyses of blood samples revealed significant metabolic variations between PCDD/Fs and DL-PCBs exposed groups and controls, reflecting the induced metabolic disruption. Distinct changes were observed in sphingosine, palmitoleic acid, linoleate, linolenic acid, taurocholic acid, indole acrylic acid, and dibutyl phthalate levels, implying possible connections between PCDD/Fs and DL-PCBs toxic effects and energy-neuronal imbalances, along with lipid accumulation and anomalous amino acid metabolism, impacting taurine metabolism. Moreover, we identified three differential endogenous metabolites-L-tryptophan, indole-3-acetaldehyde, and indole acrylic acid-as potential ligands for the aryl hydrocarbon receptor (AhR), suggesting their role in mediating PCDD/Fs and DL-PCBs toxicity. This comprehensive investigation provides novel insights into the metabolic alterations induced by PCDD/Fs and DL-PCBs in laying hens, thereby enhancing our ability to assess risks associated with their exposure in human populations.


Assuntos
Galinhas , Animais , Dioxinas e Compostos Semelhantes a Dioxinas/metabolismo , Dioxinas e Compostos Semelhantes a Dioxinas/toxicidade , Feminino , Poluentes Ambientais/toxicidade , Poluentes Ambientais/metabolismo , Bifenilos Policlorados/toxicidade , Metabolômica , Metaboloma/efeitos dos fármacos , Ração Animal/análise , Dibenzodioxinas Policloradas/toxicidade
13.
J Environ Sci (China) ; 148: 57-68, 2025 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-39095190

RESUMO

The expandable graphite (EG) modified TiO2 nanocomposites were prepared by the high shear method using the TiO2 nanoparticles (NPs) and EG as precursors, in which the amount of EG doped in TiO2 was 10 wt.%. Followed by the impregnation method, adjusting the pH of the solution to 10, and using the electrostatic adsorption to achieve spatial confinement, the Pt elements were mainly distributed on the exposed TiO2, thus generating the Pt/10EG-TiO2-10 catalyst. The best CO oxidation activity with the excellent resistance to H2O and SO2 was obtained over the Pt/10EG-TiO2-10 catalyst: CO conversion after 36 hr of the reaction was ca. 85% under the harsh condition of 10 vol.% H2O and 100 ppm SO2 at a high gaseous hourly space velocity (GHSV) of 400,000 hr-1. Physicochemical properties of the catalysts were characterized by various techniques. The results showed that the electrostatic adsorption, which riveted the Pt elements mainly on the exposed TiO2 of the support surface, reduced the dispersion of Pt NPs on EG and achieved the effective dispersion of Pt NPs, hence significantly improving CO oxidation activity over the Pt/10EG-TiO2-10 catalyst. The 10 wt.% EG doped in TiO2 caused the TiO2 support to form a more hydrophobic surface, which reduced the adsorption of H2O and SO2 on the catalyst, greatly inhibited deposition of the TiOSO4 and formation of the PtSO4 species as well as suppressed the oxidation of SO2, thus resulting in an improvement in the resistance to H2O and SO2 of the Pt/10EG-TiO2-10 catalyst.


Assuntos
Grafite , Oxirredução , Platina , Dióxido de Enxofre , Titânio , Titânio/química , Grafite/química , Dióxido de Enxofre/química , Platina/química , Catálise , Monóxido de Carbono/química , Água/química , Poluentes Atmosféricos/química , Modelos Químicos
14.
J Environ Sci (China) ; 148: 650-664, 2025 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-39095197

RESUMO

China is the most important steel producer in the world, and its steel industry is one of the most carbon-intensive industries in China. Consequently, research on carbon emissions from the steel industry is crucial for China to achieve carbon neutrality and meet its sustainable global development goals. We constructed a carbon dioxide (CO2) emission model for China's iron and steel industry from a life cycle perspective, conducted an empirical analysis based on data from 2019, and calculated the CO2 emissions of the industry throughout its life cycle. Key emission reduction factors were identified using sensitivity analysis. The results demonstrated that the CO2 emission intensity of the steel industry was 2.33 ton CO2/ton, and the production and manufacturing stages were the main sources of CO2 emissions, accounting for 89.84% of the total steel life-cycle emissions. Notably, fossil fuel combustion had the highest sensitivity to steel CO2 emissions, with a sensitivity coefficient of 0.68, reducing the amount of fossil fuel combustion by 20% and carbon emissions by 13.60%. The sensitivities of power structure optimization and scrap consumption were similar, while that of the transportation structure adjustment was the lowest, with a sensitivity coefficient of less than 0.1. Given the current strategic goals of peak carbon and carbon neutrality, it is in the best interest of the Chinese government to actively promote energy-saving and low-carbon technologies, increase the ratio of scrap steel to steelmaking, and build a new power system.


Assuntos
Dióxido de Carbono , Pegada de Carbono , Aço , China , Dióxido de Carbono/análise , Poluentes Atmosféricos/análise , Metalurgia , Monitoramento Ambiental , Indústrias , Poluição do Ar/estatística & dados numéricos , Poluição do Ar/prevenção & controle
15.
Artigo em Inglês | MEDLINE | ID: mdl-38746904

RESUMO

Image-enhanced endoscopy (IEE) has advanced gastrointestinal disease diagnosis and treatment. Traditional white-light imaging has limitations in detecting all gastrointestinal diseases, prompting the development of IEE. In this review, we explore the utility of IEE, including texture and color enhancement imaging and red dichromatic imaging, in pancreatobiliary (PB) diseases. IEE includes methods such as chromoendoscopy, optical-digital, and digital methods. Chromoendoscopy, using dyes such as indigo carmine, aids in delineating lesions and structures, including pancreato-/cholangio-jejunal anastomoses. Optical-digital methods such as narrow-band imaging enhance mucosal details and vessel patterns, aiding in ampullary tumor evaluation and peroral cholangioscopy. Moreover, red dichromatic imaging with its specific color allocation, improves the visibility of thick blood vessels in deeper tissues and enhances bleeding points with different colors and see-through effects, proving beneficial in managing bleeding complications post-endoscopic sphincterotomy. Color enhancement imaging, a novel digital method, enhances tissue texture, brightness, and color, improving visualization of PB structures, such as PB orifices, anastomotic sites, ampullary tumors, and intraductal PB lesions. Advancements in IEE hold substantial potential in improving the accuracy of PB disease diagnosis and treatment. These innovative techniques offer advantages paving the way for enhanced clinical management of PB diseases. Further research is warranted to establish their standard clinical utility and explore new frontiers in PB disease management.

16.
Artigo em Inglês | MEDLINE | ID: mdl-38725874

RESUMO

Objective: Iodine staining on white light imaging (WLI) is the gold standard for detecting and demarcating esophageal squamous cell carcinoma (ESCC). We examined the effects of texture and color enhancement imaging (TXI) on improving the endoscopic visibility of ESCC under iodine staining. Methods: Twenty ESCC lesions that underwent endoscopic submucosal dissection were retrospectively included. The color difference between ESCC and the surrounding mucosa (ΔEe) on WLI, TXI, and narrow-band imaging was assessed, and ΔEe under 1% iodine staining on WLI and TXI. Furthermore, the visibility grade determined by endoscopists was evaluated on each imaging. Result: The median ΔEe was greater on TXI than on WLI (14.53 vs. 10.71, respectively; p < 0.005). Moreover, the median ΔEe on TXI under iodine staining was greater than the median ΔEe on TXI and narrow-band imaging (39.20 vs. 14.53 vs. 16.42, respectively; p < 0.005 for both). A positive correlation in ΔEe under iodine staining was found between TXI and WLI (correlation coefficient = 0.61, p < 0.01). Moreover, ΔEe under iodine staining on TXI in each lesion was greater than the corresponding ΔEe on WLI. The visibility grade assessed by endoscopists on TXI was also significantly greater than that on WLI under iodine staining (p < 0.01). Conclusions: The visibility of ESCC after iodine staining was greater on TXI than on WLI.

17.
Artigo em Inglês, Português | LILACS | ID: biblio-1561702

RESUMO

Introdução: No processo de edificação da Política Nacional de Saúde Integral LGBT+, a Atenção Básica ganha importante destaque, pois deveria funcionar como o contato preferencial dos usuários transgênero (trans). Objetivo: Investigar quais as percepções dos profissionais da Atenção Básica quanto às situações de vulnerabilidade enfrentadas pelas pessoas trans, bem como pesquisar os impedimentos que eles consideram existir na busca dessa população por acesso a esses serviços. Métodos: Utilizou-se uma abordagem qualitativa por meio de entrevistas semiestruturadas com 38 profissionais de saúde atuantes das Estratégias Saúde da Família de dois municípios do interior do estado de São Paulo. O material obtido foi submetido à análise de conteúdo de Bardin. Resultados: Os resultados apontaram para o desconhecimento quanto aos reais empecilhos que dificultam o acesso e seguimento de pessoas trans nos serviços de saúde. Observou-se ainda a manutenção de preconceitos e ideias que reforçam estereótipos ligados ao tema e que se estendem ao exercício da profissão. Isso se relaciona diretamente com a falta da abordagem de assuntos relacionados à sexualidade humana na graduação desses profissionais, além da falta de atualização quanto ao tema, o que impacta a qualidade do serviço que é ofertado à população em estudo. Conclusões: As normativas e portarias já existentes precisam ser efetivamente postas em prática, fazendo-se imperativas a ampliação e difusão do conhecimento a respeito da temática trans no contexto dos serviços públicos de saúde, o que pode servir como base para subsidiar a formação dos profissionais que atuam nesse setor, bem como políticas públicas efetivas.


Introduction: In the process of creating the National LGBT+ Comprehensive Health Policy, primary care has important prominence as it must work as the preferential contact of transgender (trans) users. Objective: To investigate the perceptions of primary care professionals about the vulnerability situations faced by trans persons and also hindrances they consider existing in this population's search for access to these services. Methods: A qualitative approach was used through semi-structured interviews with 38 health care professionals working in the Family Health Strategy of two cities in the countryside of the state of São Paulo. The material obtained was submitted to analysis of Bardin content. Results: The results pointed to a lack of knowledge about real hindrances that obstruct the access to and follow-up by health services for trans persons. It was also observed the maintenance of prejudices and ideas that reinforce stereotypes connected to the matter and extend to the practice of professionals. It is directly related to the lack of approach of issues related to human sexuality in the education of those professionals, in addition to lack of update about it, which impacts the quality of service offered to the population under study. Conclusions: The standards and ordinances already existing need to be effectively practiced, being crucial the extension and spread of knowledge about trans matters in the context of public health services. It can be the basis for subsidizing the education of professionals who work in this field, as well as effective public policies.


Introducción: En el proceso de edificación de la Política Nacional de Salud Integral LGBT+, la Atención Básica tiene importante destaque, pues debería funcionar como contacto preferente de los usuarios transgénero (trans). Objetivo: Investigar las percepciones de los profesionales de Atención Básica sobre las situaciones de vulnerabilidad que enfrentan las personas trans, así como investigar los impedimentos que consideran que existe en la búsqueda de esta población por el acceso a estos servicios. Métodos: Se utilizó un abordaje cualitativo por medio de entrevistas semiestructuradas con 38 profesionales de salud actuantes de las Estrategias de Salud de la Familia de dos municipios del interior del estado de São Paulo. El material obtenido fue sometido a análisis de contenido de Bardin. Resultados: Los resultados apuntaron al desconocimiento sobre los reales obstáculos que dificultan el acceso de personas trans a los servicios, además del segmento de los cuidados en las unidades. Se observó además que se mantienen los prejuicios e ideas que refuerzan estereotipos vinculados al tema y que se extienden al ejercicio de la profesión. Esto se relaciona directamente a la falta da abordaje de asuntos relacionados a la sexualidad humana en la graduación de estos profesionales, además de la falta de actualización sobre el tema, lo que impacta en la calidad del servicio que se ofrece a la población en estudio. Conclusiones: Las normas y ordenanzas ya existentes deben ser efectivamente puestas en práctica, por lo que es imperativo ampliar y difundir el conocimiento sobre la temática trans en el contexto de los servicios públicos de salud, que pueda servir de base para apoyar la formación de profesionales que actúan en este sector, así como políticas públicas efectivas.


Assuntos
Humanos , Pessoas Transgênero , Atenção Primária à Saúde , Pessoal de Saúde , Equidade no Acesso aos Serviços de Saúde , Vulnerabilidade em Saúde
18.
Siglo cero (Madr.) ; 54(4): 85-120, oct.-dic. 2024. ilus, tab, graf
Artigo em Espanhol | IBECS | ID: ibc-EMG-560

RESUMO

La metodología de Planificación Centrada en la Persona (PCP) cada vez tiene mayor impacto en España. Comenzando desde las distintas legislaciones que regulan la atención a este colectivo en las diferentes autonomías y terminando en los centros que proveen este servicio. No obstante, existe escasa literatura internacional de estudios empíricos a grandes escalas que sitúen este enfoque metodológico en una posición relevante que garantice la eficacia de la PCP. El objetivo principal de este estudio es conocer el estado del uso de la metodología de PCP a través de estudios avalados empíricamente que sostengan tanto beneficios como limitaciones durante los últimos 10 años (2012-2022). Para ello, se ha realizado una revisión sistemática desde las directrices de PRISMA (2020), que incluye un total de 31 artículos. Como conclusión, se han descubierto más beneficios que limitaciones entre las que destacan las ventajas en su uso para las personas con discapacidad intelectual y del desarrollo y las mejoras de aspectos relacionados con la autodeterminación. No obstante, las limitaciones prevalecen por la falta de apoyos y recursos adecuados de las organizaciones para responder a una planificación centrada en la persona y la necesidad de formación de las personas implicadas en la elaboración de la PCP, lo que genera la incógnita de si se están realizando buenas prácticas en el uso de dicha metodología. (AU)


The methodology of Person Centered Planning (PCP) is having an increasing impact in Spain. Starting from the different legislations that regulate the attention to this group in the different autonomous regions and ending in the centers that provide this service. However, there is little international literature on large-scale empirical studies that place this methodological approach in a relevant position to guarantee the efficacy of PCP. The main objective of this study is to know the status of the use of PCP methodology through empirically supported studies that sustain both benefits and limitations during the last 10 years (2012-2022). For this purpose, a systematic review has been conducted since the PRISMA guidelines (2020), including a total of 31 articles. As a conclusion, more benefits than limitations have been found, among which the advantages in its use for people with intellectual and developmental disabilities and improvements in aspects related to self-determination stand out. However, limitations prevail due to the lack of adequate support and resources from organizations to respond to person-centered planning and the need for training of the people involved in the development of the PCP, which raises the question of whether good practices are being carried out in the use of this methodology. (AU)


Assuntos
Deficiências do Desenvolvimento , Deficiência Intelectual , Pessoas com Deficiência , Espanha
19.
Siglo cero (Madr.) ; 54(4): 85-120, oct.-dic. 2024. ilus, tab, graf
Artigo em Espanhol | IBECS | ID: ibc-229230

RESUMO

La metodología de Planificación Centrada en la Persona (PCP) cada vez tiene mayor impacto en España. Comenzando desde las distintas legislaciones que regulan la atención a este colectivo en las diferentes autonomías y terminando en los centros que proveen este servicio. No obstante, existe escasa literatura internacional de estudios empíricos a grandes escalas que sitúen este enfoque metodológico en una posición relevante que garantice la eficacia de la PCP. El objetivo principal de este estudio es conocer el estado del uso de la metodología de PCP a través de estudios avalados empíricamente que sostengan tanto beneficios como limitaciones durante los últimos 10 años (2012-2022). Para ello, se ha realizado una revisión sistemática desde las directrices de PRISMA (2020), que incluye un total de 31 artículos. Como conclusión, se han descubierto más beneficios que limitaciones entre las que destacan las ventajas en su uso para las personas con discapacidad intelectual y del desarrollo y las mejoras de aspectos relacionados con la autodeterminación. No obstante, las limitaciones prevalecen por la falta de apoyos y recursos adecuados de las organizaciones para responder a una planificación centrada en la persona y la necesidad de formación de las personas implicadas en la elaboración de la PCP, lo que genera la incógnita de si se están realizando buenas prácticas en el uso de dicha metodología. (AU)


The methodology of Person Centered Planning (PCP) is having an increasing impact in Spain. Starting from the different legislations that regulate the attention to this group in the different autonomous regions and ending in the centers that provide this service. However, there is little international literature on large-scale empirical studies that place this methodological approach in a relevant position to guarantee the efficacy of PCP. The main objective of this study is to know the status of the use of PCP methodology through empirically supported studies that sustain both benefits and limitations during the last 10 years (2012-2022). For this purpose, a systematic review has been conducted since the PRISMA guidelines (2020), including a total of 31 articles. As a conclusion, more benefits than limitations have been found, among which the advantages in its use for people with intellectual and developmental disabilities and improvements in aspects related to self-determination stand out. However, limitations prevail due to the lack of adequate support and resources from organizations to respond to person-centered planning and the need for training of the people involved in the development of the PCP, which raises the question of whether good practices are being carried out in the use of this methodology. (AU)


Assuntos
Deficiências do Desenvolvimento , Deficiência Intelectual , Pessoas com Deficiência , Espanha
20.
Rev. enferm. UERJ ; 32: e79505, jan. -dez. 2024.
Artigo em Inglês, Espanhol, Português | LILACS-Express | LILACS | ID: biblio-1556312

RESUMO

Objetivo: compreender o cuidado em saúde dispensado às pessoas LGBTQIAP+ por profissionais em Unidades Básicas de Saúde, a partir do referencial teórico da Política Nacional de Saúde LGBT (PNSILGBT) estabelecida pelo Sistema Único de Saúde (SUS). Método: estudo descritivo, com abordagem qualitativa, que entrevistou 12 profissionais de saúde da Atenção Básica. Os dados coletados passaram pela Análise Lexical utilizando-se do software IRAMUTEQ. Resultados: emergiram três categorias temáticas que possibilitaram compreender que os profissionais reconhecem as violências praticadas na assistência a essa população, as barreiras no acesso e as dificuldades enfrentadas por pessoas LGBTQIAP+. Considerações finais: o desconhecimento das políticas e a não percepção das consequências dessas ações para a saúde dessa população remete muito mais ao (des)cuidado do que efetivamente ao cuidado condizente as suas reais necessidades em saúde.


Objective: to understand the health care provided to LGBTQIAP+ people by professionals in Primary Care Centers, based on the theoretical framework of the National LGBT Health Policy (PNSILGBT) established by the Unified Health System (SUS). Method: a descriptive study with a qualitative approach, which interviewed 12 primary care health professionals. The data collected was subjected to Lexical Analysis using the IRAMUTEQ software. Results: Three thematic categories emerged which made it possible to understand that professionals recognize the violence practiced in assisting this population, the barriers to access and the difficulties faced by LGBTQIAP+ people. Final considerations: the lack of knowledge of the policies and the lack of perception of the consequences of these actions for the health of this population leads much more to (lack of)care than to care in line with their real health needs.


Objetivo: comprender el cuidado en salud brindado a las personas LGBTQIAP+ por profesionales en Unidades Básicas de Salud, partiendo del marco teórico de la Política Nacional de Salud LGBT (PNSILGBT) establecida por el Sistema Único de Salud (SUS). Método: estudio descriptivo, con enfoque cualitativo, que entrevistó a 12 profesionales de salud de la Atención Básica. Los datos recogidos fueron analizados mediante Análisis Léxico utilizando el software IRAMUTEQ. Resultados: surgieron tres categorías temáticas que permitieron comprender que los profesionales reconocen las violencias ejercidas en la asistencia a esta población, las barreras en el acceso y las dificultades enfrentadas por personas LGBTQIAP+. Consideraciones finales: el desconocimiento de las políticas y la no percepción de las consecuencias de estas acciones para la salud de esta población reflejan mucho más el (des)cuido que efectivamente el cuidado acorde a sus reales necesidades en salud.

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