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Photocatalytic activity of cation(Mn) and anion(N) substitution in LaCoO3 nanoperovskite under visible light

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Rare Metals 2020年第2期39卷 139-146页

作者： Parvaneh nakhostin Panahi Mohammad Hossein Rasoulifard Sara Babaei department of Chemistry Faculty of ScienceUniversity of ZanjanZanjan ***Iran

LaCoO3 compound and novel photocatalysts of LaCo0.8Mn0.2O3 and N-doped LaCoO3 were synthesized by sol-gel *** structure,morphology,size of particles and optical properties of the obtained powders were characterized by X-ray diffractometer(XRd),scanning electron microscopy(SEM) and ultraviolet-visible(UV-Vis)(dRS mode) *** perovskite structure obtained for all the prepared samples and doping Mn and N do not change the perovskite *** results revealed that the size of particles of all perovskites was less than 100 *** to that of parent LaCoO3,the band gap energy of LaCo0.8Mn0.2O3 and N-doped LaCoO3 considerably reduced due to the formation of impurity *** photocatalytic activity of all samples was evaluated by the degradation of malachite green as a model dye under visible light *** discoloration induced by LaCo0.8Mn0.2O3 was twice that induced by pure LaCoO3 because of Mn ions with variable valance and smaller band gap *** nitrogen incorporation also significantly improved the photocatalytic activity of LaCoO3 due to more oxygen vacancies and the stronger absorption in visible *** general,doping has been served as one of the most efficient methods for the improvement in band gap of photocatalysts.

关键词： Nanoperovskite Photocatalyst dyes contaminant Mn doping N doping

Biochemical dissection of STAT3 signaling in amyotrophic lateral sclerosis

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Neural Regeneration Research 2025年第11期20卷 3229-3230页

作者： Savina Apolloni Nadia d’Ambrosi department of Biology University of Rome Tor VergataRomeItaly

Amyotrophic lateral sclerosis(ALS)is a progressive neurodegenerative disease characterized by the loss of upper and lower motor neurons,clinically marked by muscle atrophy and *** the clinical course is highly variable,the average time from the onset of symptoms to the need for respiratory support or death is 3-5 *** is the most prevalent motor neuron disease in adults,occurring at a rate of 2 per 100,000 individuals and affecting 5.4 per 100,000 individuals overall.

关键词： STAT3 dissection sclerosis

From Imperfection to Perfection: Advanced 3d Facial Reconstruction Using MICA Models and Self-Supervision Learning

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Computer Modeling in Engineering & Sciences 2025年第2期142卷 1459-1479页

作者： Thinh d.Le duong Q.Nguyen Phuong d.Nguyen H.Nguyen-Xuan CIRTECH Institute HUTECH UniversityHo Chi Minh City72308Viet Nam

Research on reconstructing imperfect faces is a challenging *** this study,we explore a data-driven approach using a pre-trained MICA(MetrIC fAce)model combined with 3d printing to address this *** propose a training strategy that utilizes the pre-trained MICA model and self-supervised learning techniques to improve accuracy and reduce the time needed for 3d facial structure *** results demonstrate high accuracy,evaluated by the geometric loss function and various statistical *** showcase the effectiveness of the approach,we used 3d printing to create a model that covers facial *** findings indicate that our method produces a model that fits well and achieves comprehensive 3d facial *** technique has the potential to aid doctors in treating patients with facial injuries.

关键词： 3d face reconstruction self-supervised learning face defect 3d printed prototypes

Anti-amyloid antibodies in Alzheimer’s disease: what did clinical trials teach us?

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Neural Regeneration Research 2025年第4期20卷 1092-1093页

作者： danko Jeremic Lydia Jiménez-díaz Juan d.Navarro-López NeuroPhysiology&Behavior Lab University of Castilla-La ManchaBiomedical Research Center(CRIB)School of Medicine of Ciudad RealCiudad RealSpain

Although many causes of Alzheimer’s disease(Ad)may exist,both the original amyloid cascade and tau hypotheses posit that abnormal misfolding and accumulation of amyloid-β(Aβ)and tau protein is the central event causing the ***,that conclusion could be only partly true,and there is conflicting evidence about the role of both proteins in Ad,being able to precede and influence one *** researchers argue that these proteins are mere executors rather than primary causes of ***,there have been continuing refinements of both hypotheses,with alternative explanations proposed.Aβand tau proteins may be independently involved in specific neurotoxic pathways;yet there may be other crucial processes going on in early ***,accumulating evidence suggests that Aβand tau act synergistically,rather than additively in disease onset(Jeremic et al.,2021,2023a).

关键词： amyloid Alzheimer additive

Remaking a connection:molecular players involved in post-injury synapse formation

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Neural Regeneration Research 2025年第6期20卷 1719-1720页

作者： diogo Tomé Ramiro d.Almeida iBiMEd-Institute of Biomedicine Department of Medical SciencesUniversity of AveiroAveiroPortugal CNC-Center for Neuroscience and Cell Biology University of CoimbraCoimbraPortugal

Functional recovery from central nervous system(CNS)trauma depends not only on axon regeneration or compensatory sprouting of uninjured fibers but also on the ability of newly grown axons to establish functional synapses with appropriate *** several studies have successfully promoted long-distance axonal regeneration in distinct CNS injury models,none of them have resulted in a viable therapeutic approach for patient recovery.A possible reason may be the lack of new synaptogenesis for reestablishing the circuitry lost after ***,we discuss how our understanding of the mechanisms that instruct synapse formation in the injured nervous system may contribute to the design of new strategies to promote functional restoration in traumatic CNS disorders.

关键词： viable injury instru

Finding the balance: Modifying the cholesterol and steroidal glycoalkaloid synthesis pathway in tomato(Solanum lycopersicum L.) for human health, fruit flavor, and plant defense

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Horticultural Plant Journal 2025年第1期11卷 42-56页

作者： Vincenzo Averello IV Adrian d.Hegeman Changbin Chen department of Horticultural Science University of Minnesota1970 Folwell AvenueSt.PaulMN 55108USA School of Life Sciences Arizona State University427 E Tyler MalTempeAZ 85287USA

Unlike most plants, members of the genus Solanum produce cholesterol and use this as a precursor for steroidal glycoalkaloids. The production of the compounds begins as a branch from brassinosteroid biosynthesis, which produces cholesterol that is further modified to produce steroidal glycoalkaloids. during the cholesterol biosynthesis pathway, genetic engineering could alter the formation of cholesterol from provitamin d3(7-dehydrocholesterol) and produce vitamin d3. Cholesterol is a precursor for many steroidal glycoalkaloids, including a-tomatine and esculeoside A. Alpha-tomatine is consumed by mammals and it can reduce cholesterol content and improve LdL:HdL ratio. When there is a high a-tomatine content, the fruit will have a bitter flavor, which together with other steroidal glycoalkaloids serving as protective and defensive compounds for tomato against insect, fungal, and bacterial pests. These compounds also affect the rhizosphere bacteria by recruiting beneficial bacteria. One of the steroidal glycoalkaloids, esculeoside A increases while fruit ripening. This review focuses on recent studies that uncovered key reactions of the production of cholesterol and steroidal glycoalkaloids in tomato connecting to human health, fruit flavor, and plant defense and the potential application for tomato crop improvement.

关键词： Cholesterol Steroidal glycoalkaloids Tomato Biosynthesis a-tomatine Sterols Terpenoids Plant defense

Ultrasound-assistant preparation of Cu-SAPO-34 nanocatalyst for selective catalytic reduction of NO by NH_3

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Journal of Environmental Sciences 2015年第9期27卷 135-143页

作者： Parvaneh nakhostin Panahi Ali Niaei darush Salari Seyed Mahdi Mousavi Gérard delahay department of Chemistry Faculty of Science University of Zanjan department of Chemical Engineering & Petroleum University of Tabriz department of Applied Chemistry Faculty of Chemistry University of Tabriz Faculty of Chemistry University of Kashan Institut Charles Gerhardt UMR 5253 CNRS/UM2/ENSCM/UM1 Equipe"Matériaux Avancés pour la Catalyse et la Santé"Ecole Nationale Supérieure de Chimie de Montpellier 8 rue de l'Ecole Normale34296 Montpellier cedex France

The influence of the various preparation methods of Cu-SAPO-34 nanocatalysts on the selective catalytic reduction of NO with NH3 under excess oxygen was studied. Cu-SAPO-34 nanocatalysts were prepared by using four techniques： conventional impregnation（IM）,ultrasound-enhanced impregnation（UIM）, conventional deposition precipitation（dP） using Na OH and homogeneous deposition precipitation（HdP） using urea. These catalysts were characterized in detail by various techniques such as N2-sorption, XRd, TEM, H2-TPR,NH3-TPd and XPS to understand the catalyst structure, the nature and the dispersed state of the copper species, and the acid sites for NH3 adsorption. All of the nanocatalysts showed high activities for NO removal. However, the activities were different and followed the sequence of Cu-SAPO-34（UIM）〉 Cu-SAPO-34（HdP）〉 Cu-SAPO-34（IM）〉 Cu-SAPO-34（dP）.Based on the obtained results, it was concluded that the NO conversion on Cu-SAPO-34 nanocatalysts was mainly related to the high reducibility of the isolated Cu^2＋ions and Cu O species, the number of the acid sites and the dispersion of Cu O species on SAPO-34.

关键词： NO NH3-SCR Cu-SAPO-34 Ultrasonic impregnation