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Atmospheric transformation of diesel emissions.

The hypothesis of this study was that exposing diesel exhaust (DE*) to the atmosphere transforms its composition and toxicity. Our specific aims were (1) to characterize the gas- and particle-phase products of atmospheric transformations of DE under the influence of daylight, ozone (O3), hydroxyl (OH) radicals, and nitrate (NO3) radicals; and (2) to explore the biologic activity of DE before and after the transformations took place. The study was executed with the aid of the EUPHORE (European Photoreactor) outdoor simulation chamber facility in Valencia, Spain. EUPHORE is one of the largest an

Evaluation of polymer-based surface coatings on the biological and mechanical performance of hybrid CAD/CAM dental composites.

OBJECTIVES: This study aimed to investigate the effects of three polymeric coatings-polyethylene glycol (PEG), polyether ether ketone (PEEK), and polydopamine (PDA)-applied onto the external surfaces of hybrid CAD/CAM dental composites, on their biological and mechanical performance. METHODS: Disc-shaped specimens were fabricated from three CAD/CAM hybrid materials: Cerasmart (CS), Vita Enamic (EN), and Lava Ultimate (LU). Prior to coating, all discs were exposed to pressurized nitrogen gas to eliminate potential surface contaminants. Each specimen surface was then treated with GC G-Multi Pri

[Analysis of phthalate esters from vegetable oils by gas chromatography-mass spectrometry coupled with headspace solid-phase microextraction using cyclodextrin-based hypercrosslinked polymer coated fiber].

Phthalate esters (PAEs) are used as additives to enhance the pliability and malleability of plastics. These substances frequently migrate from packaging materials to vegetable oils because of the absence of covalent bonds. Over time, this migration could result in the accumulation of PAEs in the human body through ingestion, contributing to various diseases. Therefore, accurate qualitative and quantitative analyses of PAEs in vegetable oils are imperative to assess the origins of contamination and investigate their toxicity, degradation, migration, and transformation patterns. However, the con

[Spherical amino-functionalized covalent organic frameworks: Synthesis and adsorption performance toward perfluorinated compounds].

Perfluorinated compounds (PFCs) are widely used in textiles, fire protection, metal electroplating, and semiconductor production owing to their hydrophobic and oil-repellent characteristics. However, they are also persistent organic pollutants. The uncontrolled discharge of PFCs into the environment has led to serious global pollution. PFCs pose severe reproductive, neural, immune, and other threats to human health by accumulating through the food chain. Thus, the development and application of high-performance extraction materials has become a research hotspot in efforts to achieve the accura

[Preparation and chromatographic properties of 1-vinyl-3-dodecylimidazole bromide silica-bonded stationary phase].

As the main components of cell membranes, lipids play important roles in organisms. Lipids have been proved to be closely associated with the occurrence and development of serious diseases, such as cancers and metabolic diseases. The development of novel separation materials for use in high-performance liquid chromatography (HPLC) is essential for high-efficiency lipid separation. Such materials can promote further in-depth research of the structure and biological functions of lipids. In this study, we focused on the preparation of an ionic-liquid-modified silica-bonded HPLC stationary phase a

[Chiral porous organic cage used as stationary phase for gas chromatographic separation of chiral and achiral compounds].

Porous organic cages (POCs) are a new type of molecular material. The well-defined cavities, abundant host-guest recognition ability, and good solubility of POCs render them attractive for use in various fields such as molecular recognition, gas adsorption, molecular containers, sensing, catalysis, chromatographic separation. In this study, a chiral POC (CPOC) was synthesized via the Schiff base condensation of 4,4',4″,4″'-(ethene-1,1,2,2-tetrayl)tetrabenzaldehyde with (R,R)-1,2-cyclohexanediamine. CPOC was characterized using nuclear magnetic resonance (NMR) spectroscopy, Fourier transform-in

Marine Klebsiella sp. RR1-mediated AgNPs functionalized with matcha: synthesis, characterization, and evaluation of antibacterial, antioxidant, anti-inflammatory, and gene regulation of breast cancer potentials.

BACKGROUND: Silver nanoparticles (AgNPs) are gaining traction in many industries and sectors due to their exceptional physical and chemical characteristics. The purpose of this research was to determine the efficiency of marine bacterial-mediated AgNPs functionalized with matcha (AgNPs-Matcha) in different biological activities. METHODOLOGY: AgNPs were biosynthesized extracellularly by the marine Klebsiella sp. RR1 and loaded with matcha extract (AgNPs-Matcha). Both AgNPs and AgNPs-Matcha were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy d

Computational and experimental approach for investigating the microstructural parameters of a cadmium indium selenide (α-CdIn2Se4) ternary semiconducting compound.

Several properties are carefully considered before choosing a semiconducting material for the fabrication of a thin-film electronic device. Cadmium indium selenide (CdIn2Se4) is a ternary semiconducting compound belonging to the II-III2-VI4 family, where II = zinc (Zn), cadmium (Cd), or mercury (Hg); III = aluminium (Al), gallium (Ga), or indium (In); and VI = sulphur (S), selenium (Se), or tellurium (Te). The Cambridge serial total energy package (CASTEP) module, within the framework of density functional theory (DFT) using the PBE-GGA (Perdew-Burke-Ernzerhof generalized gradient approximatio

Influence of Graphene Oxide and Palladium Incorporation on Hydrothermally Grown Hydroxyapatite Coatings on β-Ti30Zr5Mo Alloy: Surface Chemistry, Corrosion and Biological Performance.

Hydroxyapatite coatings containing graphene oxide and palladium were hydrothermally deposited on a β-type Ti30Zr5Mo alloy in order to establish how the organization of graphene oxide and the incorporation of palladium influence the structural, electrochemical, and biological performance of the coating system. Six compositions-hydroxyapatite, hydroxyapatite with 1 wt% palladium, hydroxyapatite with 2 wt% palladium, hydroxyapatite/graphene oxide, and the corresponding graphene oxide composites containing 1 and 2 wt% palladium-were compared using X-ray diffraction, Fourier-transform infrared spec

Myohythmia: Количественное исследование синхронии и ритмичности между головой и верхним лимбом.

Мьоритмия — это расстройство осцилляционного движения <4 Гц, которое было в разной степени охарактеризовано как синхронное или асинхронное между частями тела и как вялое или ритмичное по внешнему виду, но никакого доклада о количественном анализе движения не опубликовано. МЕТОДЫ: 51-летняя женщина развила недееспособную миоритмию в голове и верхних конечностях (право) (слева) примерно через три месяца после рецидива множественных склерозов в ее мозговой стебле и мозжечке. Движение головы и двусторонних рук было зафиксировано в состоянии покоя и в позе с трехосными акселерометрами и гироскопиче

Noninvasive screening of vancomycin-associated cast nephropathy.

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Human Frequency Following Responses to Filtered Speech.

OBJECTIVES: There is increasing interest in using the frequency following response (FFR) to describe the effects of varying different aspects of hearing aid signal processing on brainstem neural representation of speech. To this end, recent studies have examined the effects of filtering on brainstem neural representation of the speech fundamental frequency (f0) in listeners with normal hearing sensitivity by measuring FFRs to low- and high-pass filtered signals. However, the stimuli used in these studies do not reflect the entire range of typical cutoff frequencies used in frequency-specific g

Weathering patinas on the medieval (S. XIV) stained glass windows of the Pedralbes Monastery (Barcelona, Spain).

BACKGROUND, AIM, AND SCOPE: The first step in the restoration of a medieval stained glass window is the evaluation of its degree of degradation. This implies the study of the chemical composition of the stained glass as well as the new mineral phases developed on its surface (patinas). Patinas are clearly related to glass composition, time, environmental conditions, microenvironments developed in local zones, bioactivity, physical and chemical factors, etc. This study was carried out on patinas developed in selected Na-rich stained glass of the Santa Maria de Pedralbes Monastery (Barcelona, Sp

[Trifluoroacetic acid-modulated synthesis of defective UiO-66 for highly efficient removal of sodium p-perfluorous nonenoxybenzenesulfonate].

Per- and polyfluoroalkyl substances （PFAS）， widely known as "forever chemicals"， present a severe and escalating global threat to ecological systems and human health. Their extreme persistence originates from remarkably strong carbon-fluorine bonds， while their amphiphilic nature facilitates widespread environmental dispersal and bioaccumulation. Among them， sodium p-perfluorous nonenoxybenzenesulfonate （OBS） has been extensively used as a commercial alternative to perfluorooctanesulfonic acid （PFOS）， which is under strict global regulation. However， mounting evidence has revealed that OBS exh

Investigating the Analgesic Mechanisms of Acupuncture for Cancer Pain: Insights From Multimodal Bioelectrical Signal Analysis.

PurposeCancer pain management remains a significant clinical challenge. While acupuncture has shown potential in alleviating cancer pain, its underlying mechanisms are not yet fully understood. This study investigates the neurophysiological mechanisms underlying acupuncture's analgesic effects using multimodal bioelectrical signal analysis.Patients and methodsFifteen cancer pain patients underwent acupuncture while wearing portable, multi-sensor devices to capture bioelectrical signals. Pain levels were assessed using the Numerical Rating Scale (NRS) before and during needle retention. Neuroph

A new removable connecting device for MARPE expander with non-common path of insertion.

OBJECTIVES: Maxillary transverse deficiency is a common malocclusion frequently observed in orthodontic clinics. Miniscrew-assisted rapid palatal expansion (MARPE) not only produces greater skeletal expansion but also offers advantages such as simple miniscrew implantation without flap elevation, enhanced patient comfort, and an expanded age range and indications for palatal expansion. However, the fixed connection between the expander and the miniscrews makes the expander difficult to remove, significantly hindering its clinical application. This study aims to employ a non-common path of inse

Объединение сенсорной способности верхних конечностей, повседневного стационарного поведения и воздействия нейрореабилитации на лиц с множественным склерозом и инсультом: исследование смешанного дизайна.

КОЛИЧЕСТВО И НАБЛЮДЕНИЕ ЗА Сенсорным состоянием лиц с неврологическими заболеваниями посредством износа в повседневной жизни свидетельствуют о том, что такой подход является многообещающим. На сегодняшний день воздействие объемов физической активности на подходы с фиксированной эпохой ограничивает возможность проведения кинематического анализа повседневного использования верхних конечностей. МЕТОДЫ: Используя сигналы ускорения и угловой скорости от датчиков запястья, мы собрали данные о здоровых регуляторах (n = 12), а также о лицах с множественным склерозом (n = 17) или инсультом (n = 14) в т

Magnetic Resonance Imaging Findings in 13 Neurologic Pot-Bellied Pigs.

This study reports the magnetic resonance imaging (MRI) findings in 13 pot-bellied pigs presented to our institution with neurological deficits. Nine pigs had abnormal MRI findings (7 with spinal cord localization and 2 with brain localization), with three of them having histopathological confirmation of the diagnoses. MRI diagnoses included a myopathy suspected to be secondary to Erysipelothrix rhusiopathiae, a round cell neoplasia involving the vertebral canal, myelomalacia, a cervical cyst like extradural lesion, pelvic fracture with secondary cauda equina involvement, two cases of fibrocar

Применение методов извлечения дискриминирующих и глубоких элементов для полного анализа слайдов: обследование.

Цифровые патологические технологии, включая целые слайды, значительно улучшили современные клинические методы, облегчая хранение, просмотр, обработку и совместное цифровое сканирование стеклянных слайдов. Исследователи предложили различные решения в области искусственного интеллекта (АИ) для применения в цифровой патологии, такие, как автоматизированный анализ изображений, для извлечения диагностической информации из WSI в целях повышения производительности, точности и воспроизводимости патологии. Методы экстракции особей играют решающую роль в преобразовании первичных данных об образе в значи

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… The framework uses elliptic Fourier analysis to form a feature vector invariant to rigid shape transformation and translation. The resulting features are then harnessed to discriminate, classify, and visualize nuclei based on contour analysis. …

Health Risks from Microplastics in Intravenous Infusions: Evidence from Italy, Spain, and Ecuador.

The rising incidence of microplastics (MPs) is a possible health risk to humans. The present study aims to analyze the presence of MPs in intravenous (IV) infusions and compare MP concentrations from multiple brands. The IV solutions of 29 medical devices (IV-MDs) from seven brands commercialized in Ecuador, Spain, and Italy have been selected under specific consideration to carry out the study. The detection of MPs has been quite obvious in almost all of the samples from brands in the mentioned countries. MP concentrations ranged from 9 to 20 MPs/L in glass containers to 166-299 MPs/L in plas