This article presents the results of a contextual analysis of graffiti found in Substructure II-B at the Maya city of Calakmul. The final use of this space was for the burial of an important Kanu’l lord, whose identity—as shown by a recent analysis of the Long Count date inscribed as part of the graffiti—seems to be that of Yukno’m Ch’een II. My analysis of the frequency of appearance of different categories of graffiti within the structure, compared to the frequency of the same categories within the total set of graffiti recorded in the Maya area, suggests that the main objective of its creators was the ritual reconditioning of this space: they wished to make it more suitable for the entombment of the ruler, through its aesthetic modification, in what constitutes an example of placemaking. The inclusion of images of deities associated with death, rebirth, abundance, and kingship reconfigured the room and transformed it into a sacred space in which the burial process could be properly carried out. Analyzing the graffiti in the context in which they are located allows us to better understand the intentionality of its creators.

Rather than static traces of the past, ruins and ancient material objects represent dynamic and important generative components of communities. A relational ontology views objects and matter as animate; here we focus on their collaborative potential with humans to inspire memory practices that bring together ancestors and living humans, things, and landscapes in recursive relationships. Situated at Etlatongo in the Mixteca Alta of Oaxaca, Mexico, our research interrogates broader Mixtec and Mesoamerican perspectives on things, which indicates certain materials and ruined places could be especially potent, imbued with cosmogonic energy from previous eras. Such material had animating properties as well as inspiring memorial narratives. Continuously occupied for more than 3,500 years, Etlatongo illustrates dynamic and varied interactions with past places and things. We present two precontact archaeological case studies that highlight these persistent engagements with the past: the first focuses on the reuse and reincorporation of earlier public architecture while the second features the selection and generative power of ancient ceramic figurine heads in two later domestic settings.

High-amylose maize starch (HAMS) can lead to succinate accumulation in the rat colon depending on the colonic microbiota. Since succinate is primarily produced via the vitamin B12 (VB12)-dependent succinate pathway, limited VB12 availability in the colon may impair fermentation. While a portion of dietary VB12 may reach the colon, most of it is absorbed in the upper gastrointestinal tract, potentially resulting in an insufficient supply for colonic bacteria. This study aimed to determine the minimum caecal VB12 concentration required to prevent succinate accumulation and to assess whether dietary cobalt (Co), a structural component of VB12 and its analogues, promotes microbial VB12 analogue synthesis. Sprague-Dawley male rats were used in three experiments. In Experiment 1, HAMS-fed rats were given diets with increasing VB12 doses. Caecal succinate concentrations decreased dose-dependently, with a predicted threshold of 74 pmol/g VB12 required to prevent accumulation. In Experiment 2, rats were fed HAMS diets with varying Co levels. Co supplementation significantly increased VB12-equivalent concentrations, measured by microbiological assay, from 27 to 915 pmol/g without altering cobalamin concentrations, suggesting enhanced microbial synthesis of VB12 analogues. Caecal succinate levels decreased with increasing Co intake, mimicking the effects of dietary VB12. In Experiment 3, rats were fed HAMS diets with or without high-dose Co to confirm these effects and assess microbiota changes. Co supplementation restored the abundance of Akkermansia, which utilises VB12 and its analogues. These findings suggest that maintaining sufficient colonic VB12 – through direct supplementation or Co-stimulated microbial production – may help mitigate HAMS-induced succinate accumulation and support balanced colonic fermentation.

This article examines how Latina Republican Congressional candidates frame themselves as both embodying and representing the “real Latino electorate,” who they claim has been ignored in the U.S. political arena. In this article, I engage in an in-depth analysis of these candidates — including content analyses of their public interviews, speeches, advertisements, websites, newspaper coverage, and social media presences — in four border districts in Texas. I find that the ways in which these candidates strategically reframe Latinidad and the immigrant experience to align with Republican ideology allow these candidates to advocate for comprehensive immigration reform while simultaneously engaging in the Latino threat narrative that dehumanizes the very community they claim to represent. More specifically, these candidates articulate an alternate, intersectional vision of Latinidad which presents Latino immigrant women and children as victims, Latino immigrant men as criminals, and themselves as unique authorities on immigration given their status as border patrol wives. These candidates’ race-gender consciousness also allows these candidates to express political anger, which has generally been denied to women of color in the Republican Party. In so doing, they offer a pointed critique claiming that Latinos are a captured group in American political parties.

In this article, we reformulate LXYZ’s $L^p$ affine Sobolev inequality chain (including Lutwak–Yang–Zhang’s $L^p$ affine Sobolev inequality and Xiao’s p-affine capacity inequality) in the setting of Grassmann manifolds. For this purpose, the Grassmannian $ p $-affine capacity is introduced.

This article reframes the traditional view of Persian rhetoric as merely a derivative of Arabic tradition by examining its development through four key manuals: Muhammad ibn ʿUmar Rādūyānī’s Tarjumān al-Balāgha, Rashīd al-Dīn Vatvāt’s Hadāʾiq al-Sihr, Shams-i Qays-i Rāzī’s al-Muʿjam, and Sayf-i Jām-i Hiravī’s Jāmiʿ al-Sanāyiʿ. It is an exploration of the historical and cultural contexts in which these works were composed, highlighting how Persian rhetoricians adapted and reshaped Arabic models as part of a broader movement toward literary autonomy. By foregrounding these dynamics, the article offers a fresh perspective on the reciprocal relationship between Arabic and Persian rhetorical traditions. Particular attention is given to Tarjumān al-Balāgha as a seminal effort to Persianize rhetorical tradition, in which Rādūyānī adapts and reconfigures Arabic concepts to lay the groundwork for a distinct Persian literary identity, and to Jāmiʿ al-Sanāyiʿ, which subsequently consolidates this project into a coherent and comprehensive Persian framework. Together, these works mark pivotal moments in the trajectory of Persian rhetorical thought and reflect broader cultural and intellectual currents in the medieval Islamicate world.

We study the decay properties of non-negative solutions to the one-dimensional defocusing damped wave equation in the Fujita subcritical case under a specific initial condition. Specifically, we assume that the initial data are positive, satisfy a condition ensuring the positiveness of solutions, and exhibit polynomial decay at infinity. To show the decay properties of the solution, we construct suitable supersolutions composed of an explicit function satisfying an ordinary differential inequality and the solution of the linear damped wave equation. Our estimates correspond to the optimal ones inferred from the analysis of the heat equation.

Eating duration and shift work can both influence metabolic regulation, but their joint associations with diabetes are unknown. We aimed to examine the independent and joint associations of eating duration and shift work with diabetes in a cross-sectional study using a nationally representative sample of US workers. We included 14852 eligible participants from the National Health and Nutrition Examination Survey, 2005–2010 and 2017–2020. Eating duration was calculated based on first and last eating occasions from 24-h dietary recalls. Long eating duration (LED: ≥ 13 h) v. short eating duration (SED: < 13 h) was defined based on the median. Workers were classified as engaging in shift work (SW, n 5140) v. non-shift work (NSW, n 8945) based on self-report. Logistic regressions were used to examine the associations of LED and SW with diabetes, independently and jointly with stratification by age. LED was associated with higher odds of diabetes among workers aged < 45 years (OR, 1·51; 95 % CI, 1·05–2·19) but not among workers aged ≥ 45 years (OR, 0·98; 95 % CI, 0·79–1·20). SW was associated with higher odds of diabetes among both younger (OR, 1·28; 95 % CI, 0·88–1·85) and older workers (OR, 1·28; 95 % CI, 1·04–1·58). There was suggestive evidence that workers with both LED and SW had higher odds of diabetes compared with those with SED and NSW, but the association was stronger among younger (OR, 1·40; 95 % CI, 0·85–2·28) than older workers (OR, 1·28; 95 % CI, 0·99–1·66). LED and SW were independently associated with increased odds of diabetes with suggestive evidence on their joint associations, but associations varied by workers’ age.

A short FFQ was developed for online assessment of adherence to the Dutch Mediterranean-DASH Diet Intervention for Neurodegenerative Delay (MIND-NL) diet, a culturally adapted version of the original American MIND diet. This study aimed to evaluate the relative validity of this short FFQ for assessing adherence to the MIND-NL diet, as scored by the MIND-NL score, compared with 3-d food records among community-dwelling older adults at risk of cognitive decline (n 1078; 67·4 (sd 4·6) years; 64 % female). A combination of statistical methods was used to assess the relative validity: presence of bias by Bland–Altman analysis; strength of association with Kendall’s Tau-b and Spearman correlation coefficients and levels of agreement with Wilcoxon signed rank test, cross-classification and weighted Kappa (κ) statistics. The Kendall’s Tau-b correlation for the MIND-NL score was 0·33 (95 % CI: 0·29, 0·37; de-attenuated Tau-b: 0·45). Individual MIND-NL diet component score correlations ranged from 0·05 to 0·56, with 12 out of 15 of the MIND-NL diet components adequately correlated (> 0·20). The average MIND-NL scores for the short FFQ (8·4 (sd 1·8) points) and food records (6·7 (sd 1·7) points) showed to be significantly different (P < 0·001). The Kappa (κ) coefficient for tertile classification of the MIND-NL score was 0·29 (95 % CI: 0·25, 0·33), indicating an acceptable level of agreement in ranking participants beyond chance. Acceptable agreements (κ > 0·20) were observed for 10 out of 15 MIND-NL diet components. Taking all analyses together, the short FFQ showed acceptable validity for ranking older adults at risk of cognitive decline according to their adherence to the MIND-NL diet.

The sourcing of exotic raw materials provides a window into the social networks of ancient peoples. Here we source copper from four archaeological contexts at the Mound City Group, a UNESCO World Heritage site and major Hopewell ceremonial site in south-central Ohio, USA. Results of laser ablation–inductively coupled plasma–mass spectrometry indicate the use of copper at Mound City from both the Great Lakes Copper District and the southern Appalachians. Forty-two percent of the Mound City sample was classified as southern Appalachian copper, a higher percentage than for any other large Ohio Hopewell site tested. The use of Appalachian copper has not been documented in earlier, pre-Hopewell contexts in the central Ohio Valley. This new pattern correlates with both an increased demand for copper and the development of broader-based social networks connecting the central Ohio River Valley with the Southeast. This context is different from and complementary to that of the “copper trail” to the north established hundreds of years earlier.