Color Line Research Articles

Aspidistra leipingensis (Asparagaceae), a new species from Guangxi, China

Aspidistra leipingensis, a new species of Asparagaceae from Guangxi, southern China, is described and illustrated. The new species is morphologically similar to A. punctatoides, but can be distinguished by its shorter leaf blade and petiole, longer perianth tube, stamens inserted in the lower part of the perianth tube, stigma hemispherical shape, upper surface convex and glabrous. Colour plate and line drawing of the new species are provided.

Investigating the relationship between subjective perception and unconscious feature integration.

Visual features need to be temporally integrated to detect motion signals and solve the many ill-posed problems of vision. It has previously been shown that such integration occurs in windows of unconscious processing of up to 450 milliseconds. However, whether features are integrated should be governed by perceptually meaningful mechanisms. Here, we expand on previous findings suggesting that subjective perception and integration may be linked. Specifically, different observers were found to group elements differently and to exhibit corresponding feature integration behavior. If the former were to influence the latter, perception would appear to not only be the outcome of integration but to potentially also be part of it. To test any such linkages more systematically, we here examined the role of one of the key perceptual grouping cues, color similarity, in the Sequential Metacontrast Paradigm (SQM). In the SQM, participants are presented with two streams of lines that are expanding from the center outwards. If several lines in the attended motion stream are offset, offsets integrate unconsciously and mandatorily for periods of up to 450 milliseconds. Across three experiments, we presented lines of varied colors. Our results reveal that individuals who perceive differently colored lines as "popping out" from the motion stream do not exhibit mandatory integration but that individuals who perceive such lines as part of an integrated motion stream do show offset integration behavior across the entire stream. These results attest to the proposed linkage between subjective perception and integration behavior in the SQM.

An innovative biosensor utilizing aptamer-gated mesoporous silica nanoparticles for determination of aminoglycoside antibiotics through indirect-lateral flow

BackgroundAminoglycoside antibiotics (AGs) are commonly utilized in both human and veterinary medicine to treat and manage a range of infections. These antibiotics are recognized for their narrow therapeutic window, with an overdose potentially resulting in severe side effects like kidney and ear damage. Hence, the implementation of a quick, precise, and on-the-spot testing method is crucial in clinical settings. In the present investigation, we designed an innovative indirect lateral flow assay (LFA) utilizing aptamers to detect kanamycin, a type of aminoglycoside antibiotics. We prepared mesoporous silica nanoparticles (MSNs) functionalized with amino groups, loaded them with morphine (MOP), and then sealed them with aminoglycoside aptamers (Apt). The complex of gated-MSNs@Apt was tested using the MOP LFA in the presence or absence of kanamycin antibiotics. ResultsThe indirect LFA system displayed a single colored line in the test line for positive samples, whereas it exhibited double colored lines in both the control line and test line for negative samples. Our custom-designed LFA biosensors demonstrated two linear ranges, from 10 nM to 350 nM and 500 nM to 1500 nM, with a limit of detection (LOD) of 5 nM in serum media under optimized conditions. The introduced indirect LFA biosensor was effectively utilized to detect kanamycin, achieving a satisfactory recovery rate of 92.9-109.9% with RSD of 1.68-7.73% in serum samples. SignificanceIn general, the created LFA system offers a portable, straightforward, and affordable approach for point-of-care (POC) identification of kanamycin and other AGs.

Use of Clive Bell's Theory in the Lamongan Typical Lele Pecel Banner Image

Clive Bell is a philosopher of modern classical art who is famous for his idea of ​​significant form. Bell is a philosopher who was influenced by Plato's line of thought about beautiful forms that seem to be outside the form of the work itself. According to him, all aesthetic systems start from the subject's personal experience of the occurrence of typical emotions. There are three theories of Clive Bell, namely aesthetic emotion, meaningful form, and essentialism. This research uses a qualitative research approach with data collection stages as the completion material for this research, because qualitative methods generally emphasize analysis or descriptiveness. Data can be obtained from data collection techniques in the form of in-depth interviews and observation. Based on the analysis carried out, a new meaning emerged in the typical Lamongan catfish pecel banner. The Lamongan catfish pecel banner is not just an ordinary banner without any artistic value in it. After carrying out this research, it was found that in the catfish pecel banner there are Clive Bell's principles, namely aesthetic emotions, meaningful forms, and essentialism and there are also principles of painting such as color lines, shapes, planes, and textures.

How the Struggle for Public Health in the Jim Crow South Reflected and Reinforced Systemic Racial Health Inequality

Abstract The twenty-first century COVID-19 epidemic revealed a U.S. public health system that countenanced health inequities and a U.S. public that resisted disease containment policies. This crisis, however, was only the most recent chapter in a longer struggle in the United States to institutionalize public health. We focus on two early twentieth-century public health campaigns in the American South, the unhealthiest U.S. region at the time. Black southerners—denied basic health, political, economic, and social rights under a rising Jim Crow regime—self-organized health services networks, including through the Tuskegee Woman’s Club, the Negro Organization Society of Virginia, and the Moveable School (1890s–1915). Around the same time, a philanthropic project, the Rockefeller Sanitary Commission (RSC, 1909–1914), seeded state-level public health agencies in eleven southern states, thereby installing public health in a top-down manner. We use archival data sources to explore key similarities and differences in the public health concerns and coalition-building approaches of each campaign and southern resistance to their efforts. We find Black-led campaigns often blurred the color line to form coalitions that provided services to the underserved while tackling environmental health risks at the community level. In contrast, RSC affiliates in southern states, as directed by RSC administrators, provided health services as short-term public dispensaries. Services reached Black and White communities willing to participate but in a manner that did not overtly challenge Jim Crow-era practices. Southern resistance to public health expansion persisted under each approach. The legacies of these struggles remain; the political-economic and ideological forces that limited public health expansion while marginalizing Black community health efforts reverberate in public health inequities today.

GRANDMA Observations of SN 2023wrk, a Luminous Type Ia Supernova with Significant Unburned Carbon in the Outer Ejecta

First detected on 2023 November 4 by the Gravitational-wave Optical Transient Observer, SN 2023wrk is a Type Ia Supernova at 40 Mpc, with significant unburned carbon in the outer ejecta. In this note, we present photometric and spectroscopic observations and analysis conducted by the Global Rapid Advanced Network Devoted to the Multi-messenger Addict over a 115 days period, which includes 78 days of measurements. The observations were contributed by both amateur and professional astronomers. J. Liu et al. analyzed the physical processes involved, and compared the evolution of color and spectral lines. We conclude that SN 2023wrk is the second 1999aa-like object with strong carbon absorption lines that has ever been found, which enriches our understanding of the subclass of 1999aa-like SNe.

The psychology of social change – 30 years post-apartheid: what went wrong and how to fix it?

This article presents some snapshots from 30 years of my collaborative work in the social psychology of social change in South Africa. Projects with students and colleagues used ethnographic, discursive, and survey methods to document racial encounters in the newly desegregated spaces of post-apartheid South Africa. I will review some of the successes and failures of desegregation efforts both in the country and in social psychology, where intergroup contact theory has come under considerable scrutiny. Critically, an assimilate-to-privilege form of desegregation has not resulted in systemic change but replaced the apartheid ‘colour line’ with an ‘epistemic line’ of White privilege and race stereotyping. Towards the end of the article, I’ll consider why anticolonial discourse rejects intergroup contact as a solution, and turn, finally, to Mbembe’s concept of Afropolitanism to make modest proposals for a way forward – the ‘how to fix it’ part of the article.

A point mutation in the zinc-finger transcription factor CqLOL1 controls the green flesh color in chieh-qua (Benincasa hispida Cogn. var. Chieh-qua How).

Flesh color is an essential trait in chieh-qua (Benincasa hispida Cogn. var. Chieh-qua How); however, the inheritance and molecular basis of green flesh trait remain unclear. In the present study, two F2 populations, derived from 1742 (white flesh) × FJ3211 (green flesh) and J16 (white flesh) × FJ5 (green flesh), were used to identify the green flesh (Cqgf) locus. Genetic analysis revealed that the presence of green flesh was a quantitative trait that closely followed a normal distribution. Combining the results from QTL mapping and BSA-seq analysis, the Cqgf locus was preliminarily determined to be located on chromosome 05 and was narrowed down to a 2.55-Mb interval by linkage analysis. A large J16 × FJ5 F2 population comprising 3,180 individuals was subsequently used to screen the recombinants, and the Cqgf locus was fine-mapped to a region of 329.70 kb that harbors six genes. One of the candidate genes, Bch05G003700, the zinc-finger transcription factor LOL1 (lsd one like 1 protein; CqLOL1), was the strongest candidate gene for the Cqgf locus according to sequence variation and expression analysis. Additionally, a point mutation (A > C) in CqLOL1 resulted in the substitution of threonine (T) with proline (P) in the amino acid sequence, showing a complete relationship linked with flesh color in a panel of 45 germplasms. The study suggests that CqLOL1 promotes the accumulation of chlorophyll content in chieh-qua and lead to green flesh. Our findings establish a theoretical and technical foundation for breeding different flesh color lines and elucidating the underlying mechanisms of flesh color in chieh-qua.

Critique beyond relation: The stakes of working with the negative, the void and the abyss

AbstractThe ‘relational turn’ has been widely embraced in Human Geography and related fields over the last couple of decades as an alternative to the hubris of modern and colonial reasoning. Yet, increasingly, concerns over the extent that contemporary conceptualisations are overly ‘generative’, ‘productivist’ and ‘affirmational’ has come to the fore. There is significant interest in the possibilities for more negative understandings, highlighting failure, attrition, voiding, exhaustion, impotentiality, incompleteness and attributes of ‘non‐relation’. We draw out how, to date, most of these approaches have developed a hermeneutic approach, seeking to bring the negative and the non‐relational into the world as forces of disruption and refusal, holding open other possibilities of knowing and being in the world and enabling alternative political imaginaries. This paper seeks to outline an alternative mode of critique, one that places both relational and negative approaches under the scrutiny of an ‘abyssal’ approach. Here, after Fanon, the world violently forged into the global colour line is bifurcated via the construction of the modern subject, capable of reading itself as a subject in the world and through Human Geography as a field of study. In this always already antiblack world, the goal of ‘Abyssal Geography’ is not to continue worlding the modern subject in new ways, but to analyse and critique the mechanisms and shifts in critical thought through which Human Geography continues to salvage and to redeem the purchase of the modern subject and the world.

Correction to: Jenna Grace Sciuto, Policing Intimacy: Law, Sexuality, and the Color Line in Twentieth Century Hemispheric American Literature

Correction to: Jenna Grace Sciuto, <i>Policing Intimacy: Law, Sexuality, and the Color Line in Twentieth Century Hemispheric American Literature</i>

Epidemiological trends of SARS-CoV-2 infections during pregnancy in Chicago

Abstract Background The epidemiology of SARS-CoV-2 has varied significantly across age groups, specifically children. Immune and physiologic changes in pregnancy can lead to increased susceptibility to infection. Pregnant people were at increased risk of severe COVID-19 infections and obstetric complications, particularly before vaccine availability. We investigated epidemiologic trends of SARS-CoV-2 cases in pregnant people over time compared to trends in the general population and various age subgroups. We hypothesized that rates of SAR-CoV-2 infection in pregnant people may show a similar pattern to children rather than nonpregnant adults. Methods Cases of pregnant persons with SARS-CoV-2 infection who delivered at Prentice Women’s Hospital (Chicago, IL) were identified through the electronic medical record (March 2020-November 2022). Prentice has ~12,000 births annually. Clinical data collection for SARS-CoV-2 cases included the date of positive test, maternal demographics, vaccination status, severity, and latency (days between SARS-CoV-2 infection and delivery). SARS-CoV-2 cases rates in Chicago (cases/100,000; total; age 0-17 years, ≥18 years) were obtained from the Chicago Department of Public Health. Monthly average SARS-CoV-2 rates were calculated to visualize trends over the study period using Microsoft Excel. Results A total of 3,474 SARS-CoV-2 cases in pregnancy were included in the final dataset; 497 cases were excluded from analyses due to incomplete data to pinpoint timing of infection. The median maternal age was 33 years (IQR 30-36) with a median latency of 72 days (IQR 22-143.75). Over half (2206) of pregnant persons received COVID-19 vaccination. In terms of timing, 514 people (15%) tested positive during their 1st trimester, 1017 (29%) in 2nd trimester, and 1943 (56%) in 3rd trimester. The trends of SARS-CoV-2 cases over time among pregnant persons coincide closely with trends among children in Chicago rather than adults [Figure 1]. A steep spike and higher SARS-CoV-2 rates were observed in pregnancy during the initial Omicron variant surge (December 2021-January 2022) and in April-July 2022, during which children also led case rates. Earlier in the pandemic, pregnant people and children were less affected than non-pregnant adults. Conclusion We observed an interesting trend of SARS-CoV-2 cases among pregnant persons aligning with rates in children in Chicago rather than adults. Possible explanations include: 1) pregnant people exercising an abundance of caution prior to vaccine availability and knowledge about COVID-19 in pregnancy and 2) epidemiologic link of maternal exposure to children. This information may inform public health strategies and effective precautions in future epidemics/pandemics to keep patients safe during pregnancy. Figure 1. Cases of SARS-CoV-2 in age and pregnancy subgroups in Chicago. Blue bars represent SARS-CoV-2 positive cases among pregnant people who later delivered at Prentice Women’s Hospital [left y-axis] March 2020-November 2022. Colored lines represent case rate (cases/100,000) in Chicago according to Chicago Department of Public Health data (yellow = total, purple = adults ≥18 years, red = children 0-17 years) [right y-axis].

Black Madness :: Mad BlacknessDisabilities of the Color Line: Redressing Antiblackness from Slavery to the Present

Black Madness :: Mad BlacknessDisabilities of the Color Line: Redressing Antiblackness from Slavery to the Present

Being Indigenous in Jim Crow Virginia: Powhatan People and the Color Line

Being Indigenous in Jim Crow Virginia: Powhatan People and the Color Line

The Kinesthetic Turn: Jessie Redmon Fauset and the Machinery of Dance Modernism

Abstract: This essay argues that Jessie Redmon Fauset's debut novel, There is Confusion , sets the terms by which Black women would go on to challenge the formidable color line of twentieth-century dance. The 1924 text dramatizes the exercise of feminine performance to arbitrate between competing doctrines of race essentialism by centering on the figure of the aloof, yet laboring ballerina of color. Fauset ultimately presents her heroine's thinking as a kind of body to emphasize the conditions of mental work Black women have been forced to endure, in the modernist period as in our own.

Racialising Refugees: The Global Colour Line in US Resettlement

Abstract Following the 2021 Taliban takeover of Afghanistan and the 2022 Russian invasion of Ukraine, there were notable differences in access to resettlement and other pathways of humanitarian migration. Drawing on an analysis of statements by US policymakers, this article considers the global context and implications of the disparate language and approaches used in responses to Afghan and Ukrainian displacement. It shows how racialised and gendered narratives contributed to and were constituted within a broader international hierarchy and global colour line. The positioning of Ukrainians as possessing higher civilisational attributes deserving of solidarity and support, and their portrayal through prisms of strong agency, sovereignty, and kindred Western values, echoed across transnational constructions of collective white identity. In contrast, Afghan resettlement was rendered conditional on extensive security vetting and proof of loyal service to US and NATO missions in Afghanistan. Portrayals of Afghans as less assimilable, as potential terrorist infiltrators, as incapable of self-governance and unable to generate their own progress perpetuated features of the global colour line. Attending to the different logics used to construct refugee and parolee groups and policies broadens our understanding on how multilayered processes of Orientalism and racialisation shape resettlement and disparities in access to protection.

Du Boisian sociology after Du Bois: Frazier, St Clair Drake, and the global and comparative study of race and empire

AbstractIn this paper, I focus on two thinkers who I contend can be read as Du Boisian sociologists: Franklin Frazier and John Gibbs St. Clair Drake. I argue that both Frazier and Drake are often (mis)represented as being ethnographic sociologists of racism in the American inner city who owe their intellectual training and lineage to the Chicago School. By contrast, I argue that Frazier and Drake, while interested in race in the American inner city, both viewed American racism as only one piece in a global jigsaw puzzle; both advocated for comparative and historical sociologies of race and empire which would highlight—to quote Frazier (1973, 339)—that although racism “in the United States has many unique features, it is […] a phase of a world process.” Excavating this world process, to both Frazier and Drake, necessarily entailed studying the global color line beyond its expression only in the United States. Frazier and Drake ought to be read, therefore, primarily as Du Boisian sociologists, not simply as parochial ethnographers of the inner city. The data for this paper come from the Du Bois, Frazier, and Drake papers housed in archives at the University of Massachusetts‐Amherst, Howard University, and the Schomburg Centre.

Sentinels of the Color Line?

A.K.M. Skarpelis on Refashioning Race.

Powderly and the worker awakening: speaking to the South in 1885

ABSTRACT Throughout his 1885 speaking tour across the South, Terence Powderly both respected and challenged the region’s color line. Dedicated to growing the Knights of Labor (KOL) membership in the rapidly industrializing South, Powderly asked white and black workers to recognize their common cause in protesting their new wage slavery. Recognizing that the KOL’s vision of a cooperative commonwealth depended on a racially unified and enlarged union membership, Powderly pushed the notion of worker equality while respecting the South’s views of social inequality. His variegated approach to racial relations at speaking engagements across seven southern states over a four-week period reflected both a pragmatic approach to growing union membership and a moral courage in pressing against the south’s racial boundaries.

Pluteus canaliculatus (Pluteaceae: Agaricomycetes), a new species of Pluteus section Celluloderma from Turkey

During a survey of the macrofungal diversity in the Sweetgum Forest Nature Protection Area (Burdur Province), southwestern Turkey, we discovered a new species of Pluteus. The species is described and illustrated here as Pluteus canaliculatus, based on its morphological characteristics and molecular phylogenetic analyses. The new species was found on wood in a Liquidambar orientalis forest and is characterized by a light brown-yellow to reddish brown canaliculate pileus, ochre brown lamellar edges, a shiny, silvery cream stipe, predominantly ellipsoid basidiospores, mostly narrowly fusiform to fusiform pleurocystidia, often with a moniliform to flexuose neck, and an euhymeniderm or a transitional (hymeniderm and epithelium) type of pileipellis. Phylogenetic analyses of nuclear ribosomal internal transcribed spacer ITS1-5.8S-ITS2 (ITS) region sequences reveal that Pluteus canaliculatus belongs to Pluteus sect. Celluloderma, forming a distinct lineage in the /thomsonii clade. A description and a comparison with morphologically similar and closely related species are provided, together with colour photographs and line drawings of the species.

Antioxidant Profile, Amino Acids Composition, and Physicochemical Characteristics of Cherry Tomatoes Are Associated with Their Color.

This study was conducted to characterize different colored lines of cherry tomatoes and derive information regarding their metabolite accumulation. Different colored cherry tomato cultivars, namely 'Jocheong', 'BN Satnolang', 'Gold Chance', 'Black Q', and 'Snacktom', were assessed for their firmness, taste characteristics, and nutritional metabolites at the commercial ripening stage. The cultivars demonstrated firmness to withstand impacts during harvesting and postharvest operations. The significant variations in the Brix to acid ratio (BAR) and the contents of phenylalanine, glutamic acid, and aspartic acid highlight the distinct taste characteristics among the cultivars, and the nutritional metabolites are associated with the color of the cultivars. The cultivar choices would be the black-colored 'Black Q' for chlorophylls, β-carotene, total flavonoids, and anthocyanins; the red-colored 'Snacktom' for lycopene; the orange-colored 'Gold Chance' for total phenolics; and the green-colored 'Jocheong' for chlorophylls, vitamin C, GABA, glutamic acid, essential amino acids, and total free amino acids. The antioxidant capacity varied among the cultivars, with 'Gold Chance' consistently exhibiting the highest activity across the four assays, followed by 'Snacktom'. This study emphasizes the importance of screening cultivars to support breeding programs for improving the nutritional content and encourages the inclusion of a diverse mix of different colored cherry tomatoes in packaging to obtain the cumulative or synergistic effects of secondary metabolites.