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In this work, single-shot ptychography was adapted to the XUV range and, as a proof of concept, performed at the free-electron laser FLASH at DESY to obtain a high-resolution reconstruction of a test sample. Ptychography is a coherent diffraction imaging technique capable of imaging extended samples with diffraction-limited resolution. However, its scanning nature makes ptychography time-consuming and also prevents its application for mapping of dynamical processes. Single-shot ptychography can be realized by collecting the diffraction patterns of multiple overlapping beams in one shot and, in recent years, several concepts based on two con-focal lenses were employed in the visible regime. Unfortunately, this approach cannot be extended straightforwardly to X-ray wavelengths due to the use of refractive optics. Here, a novel single-shot ptychography setup utilizes a combination of X-ray focusing optics with a two-dimensional beam-splitting diffraction grating. It facilitates single-shot imaging of extended samples at X-ray wavelengths.

The fastest pixel array X‐ray detectors can record images with nanosecond resolution. This is accomplished by storing only a few images in in‐pixel memory cells. In this study, we demonstrate nanosecond resolution over a large number of images by operating a prototype detector in an event driven mode. The performance of this mode is tested by measuring the Brownian dynamics of colloidal nanoparticles. We can achieve sub‐100 ns time resolution and overcome the pixel dead time by applying a cross‐correlation analysis of the neighboring pixels. The approach used in this work can be extended to study time‐resolved fast processes with diffraction, scattering or imaging techniques. A proof‐of‐principle of a nanosecond time‐resolved experiment is demonstrated using a TEMPUS detector. The concept exploits an event driven mode of the detector and cross‐correlation analysis to overcome pixel dead time, and offers new opportunities for time‐resolved studies.

Meat from cull dairy cows is often used for human consumption; it is well known that tenderness adds value to the market, and dairy cattle meat is usually undervalued. In Mexico, most meat production comes from young bulls, mainly Bos indicus and commercial crossbreeds, whose meat tends to be tough rather than tender. The present study evaluated the association of G530A (CAPN1) and C357G (CAST) polymorphisms (PCR-RFLP) with meat tenderness using the Warner–Bratzler shear force (WBSF) method. Additionally, the color, pH, and marbling of meat cuts from culled Holstein cows were determined at 72 h postmortem. CAPN1 G530A genotype frequencies were GG (50%), AG (46%), and AA (4%), and for CAST C357G, they were CC (36%), CG (42%), and GG (22%); for both SNPs, the Hardy–Weinberg equilibrium was observed. Genotypes for CAPN1G530A and CAST C357G did not have a significant effect on WBSF (p > 0.05). Shear force (kg) for CAPN1 G530A genotypes was 4.02 ± 0.14 (GG), 3.99 ± 0.13 (AG) and 4.43 ± 0 (AA); and for CAST C357G genotypes, it was 4.0 ± 0.17 (CC), 4.09 ± 0.13 (CG) and 3.98 ± 0.11 (GG); the polymorphisms did not affect significantly WBSF, suggesting the limited applicability of these SNPs for meat tenderness in dairy cattle. However, due to the small sample size (n = 50) and especially the low number of CAPN1 AA homozygotes (n = 2), this study should be regarded as a proof-of-concept pilot investigation. The results warrant validation in larger cohorts.

TEMPUS is a new detector system being developed for photon science. It is based on the Timepix4 chip and, thus, it can be operated in two distinct modes: a photon‐counting mode, which allows for conventional full‐frame readout at rates up to 40 kfps; and an event‐driven time‐stamping mode, which allows excellent time resolution in the nanosecond regime in measurements with moderate X‐ray flux. In this paper, the initial prototype, a single‐chip device, is introduced, and the readout system described. Moreover, and in order to evaluate its capabilities, some tests were performed at PETRA III and ESRF for which results are also presented. A full description of the TEMPUS system for photon science is given. The detector takes advantage of the new Timepix4 readout chip and, in particular, implements the use of the time‐stamping mode for high‐resolution timing applications.

An accurate description of the interaction of intense hard X-ray pulses with heavy atoms, which is crucial for many applications of free-electron lasers, represents a hitherto unresolved challenge for theory because of the enormous number of electronic configurations and relativistic effects, which need to be taken into account. Here we report results on multiple ionization of xenon atoms by ultra-intense (about 10 19  W/cm 2 ) femtosecond X-ray pulses at photon energies from 5.5 to 8.3 keV and present a theoretical model capable of reproducing the experimental data in the entire energy range. Our analysis shows that the interplay of resonant and relativistic effects results in strongly structured charge state distributions, which reflect resonant positions of relativistically shifted electronic levels of highly charged ions created during the X-ray pulse. The theoretical approach described here provides a basis for accurate modeling of radiation damage in hard X-ray imaging experiments on targets with high- Z constituents. Availability of intense hard X-ray pulses allows exploration of multiple ionization effects in heavier elements. Here, the authors measure the complex charge state distributions of xenon and found a reasonable agreement by comparing with the model including the relativistic and resonance effects.

The northern Humboldt Current upwelling system (HCS) belongs to the most productive marine ecosystems, providing five to eight times higher fisheries landings per unit area than other coastal upwelling systems. To solve this “Peruvian puzzle”, to elucidate the pelagic food-web structure and to better understand trophic interactions in the HCS, a combined stable isotope and fatty acid trophic biomarker approach was adopted for key zooplankton taxa and higher trophic positions with an extensive spatial coverage from 8.5 to 16°S and a vertical range down to 1,000 m depth. A pronounced regional shift by up to ∼5‰ in the δ 15 N baseline of the food web occurred from North to South. Besides regional shifts, δ 15 N ratios of particulate organic matter (POM) also tended to increase with depth, with differences of up to 3.8‰ between surface waters and the oxygen minimum zone. In consequence, suspension-feeding zooplankton permanently residing at depth had up to ∼6‰ higher δ 15 N signals than surface-living species or diel vertical migrants. The comprehensive data set covered over 20 zooplankton taxa and indicated that three crustacean species usually are key in the zooplankton community, i.e., the copepods Calanus chilensis at the surface and Eucalanus inermis in the pronounced OMZ and the krill Euphausia mucronata , resulting in an overall low number of major trophic pathways toward anchovies. In addition, the semi-pelagic squat lobster Pleuroncodes monodon appears to play a key role in the benthic-pelagic coupling, as indicated by highest δ 13 C’ ratios of −14.7‰. If feeding on benthic resources and by diel vertical migration, they provide a unique pathway for returning carbon and energy from the seafloor to the epipelagic layer, increasing the food supply for pelagic fish. Overall, these mechanisms result in a very efficient food chain, channeling energy toward higher trophic positions and partially explaining the “Peruvian puzzle” of enormous fish production in the HCS.

Contaminants of emerging concern (CECs) in water, including pharmaceuticals and personal care products, represent a significant threat to environmental and human health. In this context, the electro-Fenton (EF) process has emerged as a highly effective technique for the removal of such pollutants. This study investigates the innovative use of tea waste material (TWM) in combination with copper-iron nanoparticles (FeCuNPs) to degrade a mixture of CECs. A central aspect of this research is the sustainable reuse of organic waste material, such as TWM, to support catalytic nanoparticles. This approach not only utilizes a resource that would otherwise be discarded but also promotes sustainability in the treatment of contaminated water, aligning with the principles of the circular economy. The as-prepared FeCuNPs@TWM catalyst was fully characterized, and critical parameters influencing the pollutant removal were assessed, including adsorption capacity, catalyst load, and applied current. Under optimized conditions, the EF process, enhanced by FeCuNPs@TWM, achieved complete degradation of the contaminants within 15 min of the electrochemical process, and the activity remained after five catalytic cycles. Results demonstrate that using tea waste functionalized with FeCu nanoparticles as a catalyst not only improves the efficiency of the EF process but also offers an eco-friendly and cost-effective alternative.

Due to its high durability and transparency, soda lime glass holds a huge potential for several applications such as photovoltaics, optical instrumentation and biomedical devices, among others. The different technologies request specific properties, which can be enhanced through the modification of the surface morphology with a nanopattern. Here, we report a simple method to nanostructure a glass surface with soft lithography and wet-chemical etching in potassium hydroxide (KOH) solutions. Glass samples etched with a polymeric mask showed a nanopattern with stripes of widths between 220 and 450 nm and modulated heights between 50 and 200 nm. For different solution concentrations or etching times, the obtained nanopatterns led to an increase or reduction of the water contact angle. The largest increment, ~20 degrees, was achieved by etching the glass for 180 min with 30% KOH concentration, while a super-hydrophilic glass (~9° contact angle) was achieved when etching for 90 min with the same concentration. Optical characterization showed a very low influence of the nanostructured pattern on glass transparency and an increment in UV transmittance for some cases.

Originality/value: Professionals in the area of public safety live daily with a plurality of feelings since they carry out social services in conditions assumed to produce high levels of stress. We recruited participants the Superintendency of Penitentiary Services of the State of Rio Grande do Sul (Susepe), a work environment, chosen to investigate the opposing faces of workplace wellbeing and Burnout Syndrome in the daily lives of penitentiary workers. Originalidade/valor: Profissionais da area da seguranca publica convivem diariamente com uma pluralidade de sentimentos, uma vez que desempenham suas atividades em meio a elevados niveis de tensao. Nesse ramo esta inserida a Superintendencia dos Servicos Penitenciarios do Estado do Rio Grande do Sul (Susepe), cujo ambiente laboral, em cada um de seus estabelecimentos prisionais, pode revelar faces opostas no cotidiano dos servidores penitenciarios, como o bem-estar no trabalho e a sindrome de burnout.

Background Obesity has been studied as a metabolic and an inflammatory disease and is characterized by increases in the production of pro-inflammatory adipokines in the adipose tissue. To elucidate the effects of natural dietary components on the inflammatory and metabolic consequences of obesity, we examined the effects of unripe, ripe and industrial acerola juice (Malpighia emarginata DC.) on the relevant inflammatory and lipolysis proteins in the adipose tissue of mice with cafeteria diet-induced obesity. Materials/methods Two groups of male Swiss mice were fed on a standard diet (STA) or a cafeteria diet (CAF) for 13 weeks. Afterwards, the CAF-fed animals were divided into five subgroups, each of which received a different supplement for one further month (water, unripe acerola juice, ripe acerola juice, industrial acerola juice, or vitamin C) by gavage. Enzyme-linked immunosorbent assays, Western blotting, a colorimetric method and histology were utilized to assess the observed data. Results The CAF water (control obese) group showed a significant increase in their adiposity indices and triacylglycerol levels, in addition to a reduced IL-10/TNF-α ratio in the adipose tissue, compared with the control lean group. In contrast, acerola juice and Vitamin C intake ameliorated the weight gain, reducing the TAG levels and increasing the IL-10/TNF-α ratio in adipose tissue. In addition, acerola juice intake led to reductions both in the level of phosphorylated JNK and to increases in the phosphorylation of IκBα and HSL ser660 in adipose tissue. Conclusions Taken together, these results suggest that acerola juice reduces low-grade inflammation and ameliorates obesity-associated defects in the lipolytic processes.