"Listening Silence" and Its Discursive Effects

ERIC Educational Resources Information Center

Applebaum, Barbara

2016-01-01

While researchers have studied how white silence protects white innocence and white ignorance, in this essay Barbara Applebaum explores a form of white silence that she refers to as "listening silence" in which silence protects white innocence but does not necessarily promote resistance to learning. White listening silence can appear to…

Erick A. White | NREL

Science.gov Websites

Erick A. White Photo of Erick A. White Erick White Chemical Reaction Engineer Erick.White@nrel.gov compounds to chemicals and fuels Numeric modeling of chemical reaction kinetics and reactor hydrodynamics

The Hidden Curriculum of Whiteness: White Teachers, White Territory, and White Community.

ERIC Educational Resources Information Center

Allen, Ricky Lee

This paper suggests that space and spatiality are major features of racial identity and the formation of student resistance. It brings together critical studies of "Whiteness," human territoriality, and theories of resistance in education. The problems between white teachers and students of color can be understood better through a combination of…

White-pine weevil attack: susceptibility of western white pine in the Northeast

Treesearch

Ronald C. Wilkinson

1981-01-01

Heights were measured and white-pine weevil (Pissodes strobi (Peck)) attacks were recorded on 668 western white pines (Pinus monticola Douglas) interplanted among 109 eastern white pines (Pinus strobus L.) in a 10-year-old plantation in southern Maine. Less than 13 percent of the western white pines were...

The effects of whiteness on the health of whites in the USA.

PubMed

Malat, Jennifer; Mayorga-Gallo, Sarah; Williams, David R

2018-02-01

Whites in the USA are the dominant racial group, with greater than average access to most material and social rewards. Yet, while whites have better outcomes than other racial groups on some health indicators, whites paradoxically compare poorly on other measures. Further, whites in the USA also rank poorly in international health comparisons. In this paper, we present a framework that combines the concept of whiteness-a system that socially, economically, and ideologically benefits European descendants and disadvantages people in other groups-with research from a variety of fields in order to comprehensively model the social factors that influence whites' health. The framework we present describes how whiteness and capitalism in the USA shape societal conditions, individual social characteristics and experiences, and psychosocial responses to circumstances to influence health outcomes. We detail specific examples of how social policies supported by whiteness, the narratives of whiteness, and the privileges of whiteness may positively and negatively affect whites' health. In doing so, we suggest several areas for future research that can expand our understanding of how social factors affect health and can contribute to the patterns and paradoxes of whites' health. By expanding research to include theoretically-grounded analyses of the dominant group's health, we can achieve a more complete picture of how systems of racial inequity affect health. Copyright © 2017 Elsevier Ltd. All rights reserved.

Evolution models of helium white dwarf-main-sequence star merger remnants: the mass distribution of single low-mass white dwarfs

NASA Astrophysics Data System (ADS)

Zhang, Xianfei; Hall, Philip D.; Jeffery, C. Simon; Bi, Shaolan

2018-02-01

It is not known how single white dwarfs with masses less than 0.5Msolar -- low-mass white dwarfs -- are formed. One way in which such a white dwarf might be formed is after the merger of a helium-core white dwarf with a main-sequence star that produces a red giant branch star and fails to ignite helium. We use a stellar-evolution code to compute models of the remnants of these mergers and find a relation between the pre-merger masses and the final white dwarf mass. Combining our results with a model population, we predict that the mass distribution of single low-mass white dwarfs formed through this channel spans the range 0.37 to 0.5Msolar and peaks between 0.45 and 0.46Msolar. Helium white dwarf--main-sequence star mergers can also lead to the formation of single helium white dwarfs with masses up to 0.51Msolar. In our model the Galactic formation rate of single low-mass white dwarfs through this channel is about 8.7X10^-3yr^-1. Comparing our models with observations, we find that the majority of single low-mass white dwarfs (<0.5Msolar) are formed from helium white dwarf--main-sequence star mergers, at a rate which is about $2$ per cent of the total white dwarf formation rate.

White Dialectics: A New Framework for Theory, Research, and Practice with White Students

ERIC Educational Resources Information Center

Todd, Nathan R.; Abrams, Elizabeth M.

2011-01-01

This article presents White dialectics, or the tensions that White students experience as dominant group members in the United States, as a new framework to understand and intervene with White students and counselor trainees. Developed from and supported by our qualitative analysis, the authors present the six dialectics of (a) Whiteness and self,…

Making Whites from the Dark Side: Teaching Whiteness Studies at San Francisco State University

ERIC Educational Resources Information Center

Sueyoshi, Amy

2013-01-01

While whiteness studies at most institutions aims to expose the persistence of white supremacy to a disbelieving audience, whiteness studies within the College of Ethnic Studies (COES) at San Francisco State University (SFSU) begins with the assumption that racism still exists. The course then traces how whiteness is constructed and fortified to…

Know History, Know Self: Art Therapists' Responsibility to Dismantle White Supremacy

ERIC Educational Resources Information Center

Hamrick, Cassie; Byma, Christine

2017-01-01

In this article, we call on white art therapists to assume responsibility for dismantling white supremacy in the field of art therapy, in personal as well as political-structural arenas. We respond to calls from scholars and writers of color for white people to assume increased responsibility for dismantling white supremacy in white communities…

CONCENTRIC DECILE SEGMENTATION OF WHITE AND HYPOPIGMENTED AREAS IN DERMOSCOPY IMAGES OF SKIN LESIONS ALLOWS DISCRIMINATION OF MALIGNANT MELANOMA

PubMed Central

Dalal, Ankur; Moss, Randy H.; Stanley, R. Joe; Stoecker, William V.; Gupta, Kapil; Calcara, David A.; Xu, Jin; Shrestha, Bijaya; Drugge, Rhett; Malters, Joseph M.; Perry, Lindall A.

2011-01-01

Dermoscopy, also known as dermatoscopy or epiluminescence microscopy (ELM), permits visualization of features of pigmented melanocytic neoplasms that are not discernable by examination with the naked eye. White areas, prominent in early malignant melanoma and melanoma in situ, contribute to early detection of these lesions. An adaptive detection method has been investigated to identify white and hypopigmented areas based on lesion histogram statistics. Using the Euclidean distance transform, the lesion is segmented in concentric deciles. Overlays of the white areas on the lesion deciles are determined. Calculated features of automatically detected white areas include lesion decile ratios, normalized number of white areas, absolute and relative size of largest white area, relative size of all white areas, and white area eccentricity, dispersion, and irregularity. Using a back-propagation neural network, the white area statistics yield over 95% diagnostic accuracy of melanomas from benign nevi. White and hypopigmented areas in melanomas tend to be central or paracentral. The four most powerful features on multivariate analysis are lesion decile ratios. Automatic detection of white and hypopigmented areas in melanoma can be accomplished using lesion statistics. A neural network can achieve good discrimination of melanomas from benign nevi using these areas. Lesion decile ratios are useful white area features. PMID:21074971

Objective evaluation of whiteness of cooked rice and rice cakes using a portable spectrophotometer.

PubMed

Goto, Hajime; Asanome, Noriyuki; Suzuki, Keitaro; Sano, Tomoyoshi; Saito, Hiroshi; Abe, Yohei; Chuba, Masaru; Nishio, Takeshi

2014-03-01

The whiteness of cooked rice and rice cakes was evaluated using a portable spectrophotometer with a whiteness index (WI). Also, by using boiled rice for measurement of Mido values by Mido Meter, it was possible to infer the whiteness of cooked rice without rice cooking. In the analysis of varietal differences of cooked rice, 'Tsuyahime', 'Koshihikari' and 'Koshinokaori' showed high whiteness, while 'Satonoyuki' had inferior whiteness. The whiteness of rice cakes made from 'Koyukimochi' and 'Dewanomochi' was higher than the whiteness of those made from 'Himenomochi' and 'Koganemochi'. While there was a significant correlation (r = 0.84) between WI values and whiteness scores of cooked rice by the sensory test, no correlation was detected between the whiteness scores and Mido values, indicating that the values obtained by a spectrophotometer differ from those obtained by a Mido Meter. Thus, a spectrophotometer may be a novel device for measurement of rice eating quality.

Putting white pine in its place on the Hiawatha National Forest

Treesearch

Allen D. Saberniak

1995-01-01

White pine was once a very important part of the ecosysystem in the northern lake states. Turn of the century logging and wildfires removed white pine from many of the ecosystems of which it was an integral part. Early reforestation efforts were largely unsuccessful. The native white pine weevil and the exotic white pine blister rust made white pine establishment...

A Pilot Examination of Differences in College Adjustment Stressors and Depression and Anxiety Symptoms between White, Hispanic and White, Non-Hispanic Female College Students

ERIC Educational Resources Information Center

Holliday, Ryan; Anderson, Elizabeth; Williams, Rush; Bird, Jessica; Matlock, Alyse; Ali, Sania; Edmondson, Christine; Morris, E. Ellen; Mullen, Kacy; Surís, Alina

2016-01-01

Differences in four adjustment stressors (family, interpersonal, career, and academic), and depression and anxiety symptoms were examined between White, non-Hispanic and White, Hispanic undergraduate college female students. White, Hispanic female college students reported significantly greater academic and family adjustment stressors than White,…

White Privilege? The Intersection of Hip-Hop and Whiteness as a Catalyst for Cross-Racial Interaction among White Males

ERIC Educational Resources Information Center

Sulé, Venice Thandi

2015-01-01

Given the prevalence of racial segregation in the U.S., college is an opportunity to prepare students for diversity through cross-racial interaction. Hip-hop, a culture steeped in black and Latino experiences, has significant white supporters. Through diversity and critical whiteness frameworks, this research considers how white hip-hop collegians…

Further Validation of the Psychosocial Costs of Racism to Whites Scale among Employed Adults

ERIC Educational Resources Information Center

Poteat, V. Paul; Spanierman, Lisa B.

2008-01-01

To examine the validity and test the generalizability of the Psychosocial Costs of Racism to Whites Scale (PCRW) beyond the original college student sample, a geographically dispersed sample of employed White adults (N = 284) in eight states completed the measure to assess for White empathic reactions toward racism, White guilt, and White fear of…

Effect of White Charcoal on COD Reduction in Wastewater Treatment

NASA Astrophysics Data System (ADS)

Pijarn, Nuchanaporn; Butsee, Manipa; Buakul, Kanokwan; Seng, Hasan; Sribuarai, Tinnphat; Phonprasert, Pongtep; Taneeto, Kla; Atthameth, Prasertsil

2017-06-01

The objective of this study is to compare the COD reduction in wastewater between using coconut shell and coconut spathe white charcoal from Khlong Wat NongPra-Ong, Krathumbaen, SamutSakhon province, Thailand. The waste water samples were collected using composite sampling method. The experimental section can be divided into 2 parts. The first part was study the optimum of COD adsorption time using both white charcoals. The second part was study the optimum amount of white charcoal for chemical oxygen demand (COD) reduction. The pre-treatment of wastewater was examined in parameters include temperature, alkalinity (pH), conductivity, turbidity, suspended solid (SS), total dissolved solid (TDS), and COD. The results show that both white charcoals can reduce COD of wastewater. The pH of pre-treatment wastewater had pH 9 but post-treatment wastewaters using both white charcoals have pH 8. The COD of pre-treatment wastewater had COD as 258 mg/L but post-treatment wastewater using coconut shell white charcoal had COD steady at 40 mg/L in 30 min and the amount of white charcoals 4 g. The COD of post-treatment wastewater using coconut spathe white charcoal had COD steady at 71 mg/L in 30 min and the amount of white charcoals 4 g. Therefore comparison of COD reduction between coconut shell white charcoal versus coconut spathe white charcoal found that the coconut shell white charcoal had efficiency for COD reduction better than coconut spathe white charcoal.

White Men's Racial Others

ERIC Educational Resources Information Center

Lensmire, Timothy J.

2014-01-01

Background/Context: Increasingly, researchers and educators have argued that alternative conceptions of Whiteness and White racial identity are needed because current conceptions have undermined, rather than strengthened, our critical pedagogies with White people. Grounded in critical Whiteness studies, and drawing especially on the writings of…

Blacks' Death Rate Due to Circulatory Diseases Is Positively Related to Whites' Explicit Racial Bias.

PubMed

Leitner, Jordan B; Hehman, Eric; Ayduk, Ozlem; Mendoza-Denton, Rodolfo

2016-10-01

Perceptions of racial bias have been linked to poorer circulatory health among Blacks compared with Whites. However, little is known about whether Whites' actual racial bias contributes to this racial disparity in health. We compiled racial-bias data from 1,391,632 Whites and examined whether racial bias in a given county predicted Black-White disparities in circulatory-disease risk (access to health care, diagnosis of a circulatory disease; Study 1) and circulatory-disease-related death rate (Study 2) in the same county. Results revealed that in counties where Whites reported greater racial bias, Blacks (but not Whites) reported decreased access to health care (Study 1). Furthermore, in counties where Whites reported greater racial bias, both Blacks and Whites showed increased death rates due to circulatory diseases, but this relationship was stronger for Blacks than for Whites (Study 2). These results indicate that racial disparities in risk of circulatory disease and in circulatory-disease-related death rate are more pronounced in communities where Whites harbor more explicit racial bias.

Speech Recognition Scores of White and Black Student-Teacher Listeners for Black and White First Grade Speakers. Final Technical Report.

ERIC Educational Resources Information Center

Nober, E. Harris; Seymour, Harry N.

In order to investigate the possible consequences of dialectical differences in the classroom setting relative to the low income black and white first grade child and the prospective white middle-class teacher, 25 black and 25 white university listeners yielded speech recognition scores for 48 black and 48 white five-year-old urban school-children…

Growth in bone and body size among Asian and white girls in the Female Adolescent Maturation (FAM) study.

PubMed

Novotny, Rachel; Davis, James

2015-01-01

This study intends to identify differences in growth of Asian and White girls. Asian girls gained bone at similar rates to White girls. Physical activity was important to bone growth. Ethnic differences remained after adjusting for physical activity, demographics, and diet. Physical activity can improve bone gain. The purpose of this study is to examine differences in body size and bone growth of Asian, White, and Asian-White Mixed girls. Three prospective examinations of 99 Asian, 73 White, and 63 Mixed Asian and White girls, with a mean age of 11.0 years at enrollment were performed. Calcaneal bone mass, skeletal breadths, and body fat were measured. Physical activity, diet, and birth size were reported. The analyses examined the extent that body dimensions and bone size changed over time by demographic, diet, physical activity, body, and bone size parameters. White children were the most physically active yet had lower calcaneal ultrasound values for speed of sound (SOS). Based on regression models, bone mass, and subscapular skinfold thickness were greater in Asian girls compared to White and Asian-White Mixed girls at age 10 years. Asian-White Mixed girls had greater BMI compared to Asian or White girls. Asian girls gained body size more slowly than White girls, but changes in bone parameters did not differ significantly; Asian-White Mixed girls gained abdomen, hip, and weight more slowly than White girls. Among all girls, SOS and broadband ultrasound attenuation (BUA) increased significantly by level of physical activity before 12 years, but not after. Asian girls had more upper body (subscapular) fat at age 10 years and gained height and hip and abdomen circumferences more slowly than Asian-White and White girls. Asian girls had greater bone SOS and BUA at age 10 years but gained bone at similar rates to White girls. Physical activity was especially important to bone growth before age 12 years. However, ethnic differences remained after adjusting for physical activity, demographic, and dietary factors.

Mutations in MITF and PAX3 cause "splashed white" and other white spotting phenotypes in horses.

PubMed

Hauswirth, Regula; Haase, Bianca; Blatter, Marlis; Brooks, Samantha A; Burger, Dominik; Drögemüller, Cord; Gerber, Vincent; Henke, Diana; Janda, Jozef; Jude, Rony; Magdesian, K Gary; Matthews, Jacqueline M; Poncet, Pierre-André; Svansson, Vilhjálmur; Tozaki, Teruaki; Wilkinson-White, Lorna; Penedo, M Cecilia T; Rieder, Stefan; Leeb, Tosso

2012-01-01

During fetal development neural-crest-derived melanoblasts migrate across the entire body surface and differentiate into melanocytes, the pigment-producing cells. Alterations in this precisely regulated process can lead to white spotting patterns. White spotting patterns in horses are a complex trait with a large phenotypic variance ranging from minimal white markings up to completely white horses. The "splashed white" pattern is primarily characterized by an extremely large blaze, often accompanied by extended white markings at the distal limbs and blue eyes. Some, but not all, splashed white horses are deaf. We analyzed a Quarter Horse family segregating for the splashed white coat color. Genome-wide linkage analysis in 31 horses gave a positive LOD score of 1.6 in a region on chromosome 6 containing the PAX3 gene. However, the linkage data were not in agreement with a monogenic inheritance of a single fully penetrant mutation. We sequenced the PAX3 gene and identified a missense mutation in some, but not all, splashed white Quarter Horses. Genome-wide association analysis indicated a potential second signal near MITF. We therefore sequenced the MITF gene and found a 10 bp insertion in the melanocyte-specific promoter. The MITF promoter variant was present in some splashed white Quarter Horses from the studied family, but also in splashed white horses from other horse breeds. Finally, we identified two additional non-synonymous mutations in the MITF gene in unrelated horses with white spotting phenotypes. Thus, several independent mutations in MITF and PAX3 together with known variants in the EDNRB and KIT genes explain a large proportion of horses with the more extreme white spotting phenotypes.

Objective evaluation of whiteness of cooked rice and rice cakes using a portable spectrophotometer

PubMed Central

Goto, Hajime; Asanome, Noriyuki; Suzuki, Keitaro; Sano, Tomoyoshi; Saito, Hiroshi; Abe, Yohei; Chuba, Masaru; Nishio, Takeshi

2014-01-01

The whiteness of cooked rice and rice cakes was evaluated using a portable spectrophotometer with a whiteness index (WI). Also, by using boiled rice for measurement of Mido values by Mido Meter, it was possible to infer the whiteness of cooked rice without rice cooking. In the analysis of varietal differences of cooked rice, ‘Tsuyahime’, ‘Koshihikari’ and ‘Koshinokaori’ showed high whiteness, while ‘Satonoyuki’ had inferior whiteness. The whiteness of rice cakes made from ‘Koyukimochi’ and ‘Dewanomochi’ was higher than the whiteness of those made from ‘Himenomochi’ and ‘Koganemochi’. While there was a significant correlation (r = 0.84) between WI values and whiteness scores of cooked rice by the sensory test, no correlation was detected between the whiteness scores and Mido values, indicating that the values obtained by a spectrophotometer differ from those obtained by a Mido Meter. Thus, a spectrophotometer may be a novel device for measurement of rice eating quality. PMID:24757389

HOW to Manage Eastern White Pine to Minimize Damage from Blister Rust and White Pine Weevil

Treesearch

Steven Katovich; Manfred E. Mielke

1993-01-01

White pine was once a dominant forest species in the north central and northeastern United States. Following logging in the late 1800's and the early part of this century, two major pests, white pine blister rust, Cronartium ribicola J.C.Fisch., and white pine weevil, Pissodes strobi (Peck), combined to reduce the value of white pine. Blister rust was introduced...

Classification of intestinal lymphangiectasia with protein-losing enteropathy: white villi type and non-white villi type.

PubMed

Ohmiya, Naoki; Nakamura, Masanao; Yamamura, Takeshi; Yamada, Koji; Nagura, Asuka; Yoshimura, Toru; Hirooka, Yoshiki; Hirata, Ichiro; Goto, Hidemi

2014-01-01

We classified intestinal lymphangiectasia (IL) into two categories, the white and non-white villi types, and evaluated their clinical characteristics and therapeutic responses. Of the 988 patients who underwent double-balloon enteroscopy, 14 consecutive patients (7 men and 7 women, median age at onset 34 years) were enrolled with immunohistochemically confirmed IL with protein-losing enteropathy. Enteroscopically the white villi type (n = 8) showed white plaques and white-tipped villi were scattered in the small bowel, while non-white villi type (n = 6) showed that apparently normal but under more detailed observation, low and round villi with a normal color were diffused. The serum albumin levels and fecal α1-antitrypsin clearance before treatment were significantly worse in the non-white villi type (p = 0.017 and 0.039, respectively), whereas the serum immunoglobulin A and M levels were significantly lower in the white villi type (p = 0.010 and 0.046, respectively). At gastroscopy, a non-cirrhotic snakeskin appearance was significantly observed in the non-white villi type (p = 0.015). The corticosteroid response was better in the non-white villi type (p = 0.015). Two distinct subgroups were found in IL. This classification was useful in pathophysiological clustering and in predicting the therapeutic response. © 2014 S. Karger AG, Basel.

Complicating Whiteness: Identifications of Veteran White Teachers in Multicultural Settings

ERIC Educational Resources Information Center

Miele, Anthony

2013-01-01

A scrupulous search of whiteness literatures in relation to multicultural education reveals a preponderance of scholarship noting White privilege and race evasiveness. Given contrasting scholarship arguing White identity as complicated, multifarious, and bound to social and historical context, concurrent with a dearth of scholarship that examines…

Dismantling White Privilege: Pedagogy, Politics, and Whiteness. Counterpoints: Studies in the Postmodern Theory of Education, Vol. 73.

ERIC Educational Resources Information Center

Rodriguez, Nelson M., Ed.; Villaverde, Leila E., Ed.

Challenging the assumption that the study of race focuses only on "people of color," many scholars are investigating the historical and social construction of "Whiteness." This book critically interrogates whiteness across contexts; contends that "marking" Whiteness--illuminating veiled cultural assumptions of…

White Students at the Historically Black University: Toward Developing a Critical Consciousness

ERIC Educational Resources Information Center

Henry, Wilma J.; Closson, Rosemary B.

2010-01-01

The purpose of this article is to examine the potential of historically Black colleges and universities (HBCUs) to facilitate the development of a critical consciousness among their White students. It discusses philosophical views regarding the process of unveiling "Whiteness," including White critical studies and White identity development…

76 FR 8978 - Proposed Flood Elevation Determinations

Federal Register 2010, 2011, 2012, 2013, 2014

2011-02-16

... White River ted Areas effects from confluence of Taney White River). to County. approximate ly 685 feet upstream of the White River confluence Bee Creek From the None +698 Unincorpora (backwater White River ted Areas effects from confluence of Taney White River). to County. approximate ly 1,700 feet upstream of...

43 CFR 4.352 - Determination of administrative judge and notice thereof.

Code of Federal Regulations, 2010 CFR

2010-10-01

... Earth Reservation Land Settlement Act of 1985; Authority of Administrative Judges; Determinations of the... determination to be posted in the following sites: The White Earth Band, Box 418, White Earth, Minnesota 56591... Postmaster, White Earth, Minnesota 56591 White Earth IHS, White Earth, Minnesota 56591 Postmaster, Ponsford...

43 CFR 4.352 - Determination of administrative judge and notice thereof.

Code of Federal Regulations, 2011 CFR

2011-10-01

... Earth Reservation Land Settlement Act of 1985; Authority of Administrative Judges; Determinations of the... determination to be posted in the following sites: The White Earth Band, Box 418, White Earth, Minnesota 56591... Postmaster, White Earth, Minnesota 56591 White Earth IHS, White Earth, Minnesota 56591 Postmaster, Ponsford...

43 CFR 4.352 - Determination of administrative judge and notice thereof.

Code of Federal Regulations, 2013 CFR

2013-10-01

... Earth Reservation Land Settlement Act of 1985; Authority of Administrative Judges; Determinations of the... determination to be posted in the following sites: The White Earth Band, Box 418, White Earth, Minnesota 56591... Postmaster, White Earth, Minnesota 56591 White Earth IHS, White Earth, Minnesota 56591 Postmaster, Ponsford...

43 CFR 4.352 - Determination of administrative judge and notice thereof.

Code of Federal Regulations, 2012 CFR

2012-10-01

... Earth Reservation Land Settlement Act of 1985; Authority of Administrative Judges; Determinations of the... determination to be posted in the following sites: The White Earth Band, Box 418, White Earth, Minnesota 56591... Postmaster, White Earth, Minnesota 56591 White Earth IHS, White Earth, Minnesota 56591 Postmaster, Ponsford...

43 CFR 4.352 - Determination of administrative judge and notice thereof.

Code of Federal Regulations, 2014 CFR

2014-10-01

... Earth Reservation Land Settlement Act of 1985; Authority of Administrative Judges; Determinations of the... determination to be posted in the following sites: The White Earth Band, Box 418, White Earth, Minnesota 56591... Postmaster, White Earth, Minnesota 56591 White Earth IHS, White Earth, Minnesota 56591 Postmaster, Ponsford...

78 FR 59806 - Establishment of Class E Airspace; White Mountain, AK

Federal Register 2010, 2011, 2012, 2013, 2014

2013-09-30

...-1185; Airspace Docket No. 12-AAL-8] Establishment of Class E Airspace; White Mountain, AK AGENCY... airspace at White Mountain Airport, White Mountain, AK, to accommodate aircraft using new Area Navigation..., Airport, White Mountain, AK (77 FR 75598). Interested parties were invited to participate in this...

A Framework for Understanding Whiteness in Mathematics Education

ERIC Educational Resources Information Center

Battey, Dan; Leyva, Luis A.

2016-01-01

In this article, the authors provide a framework for understanding whiteness in mathematics education. While whiteness is receiving more attention in the broader education literature, only a handful of scholars address whiteness in mathematics education in any form. This lack of attention to whiteness leaves it invisible and neutral in documenting…

Unveiling White Privilege.

ERIC Educational Resources Information Center

Pappas, Georgia

1995-01-01

Racism, discrimination, and prejudice are typically viewed from the perspective of the disadvantaged ethnic minority, but another approach is to address the advantages of whites. There is one culture that is usually invisible to whites, and that is "whiteness." To grow up white is to be the focal point from which others differ. Whites…

The effect of predation on stunted and nonstunted white perch

USGS Publications Warehouse

Gosch, N.J.C.; Pierce, L.L.; Pope, K.L.

2010-01-01

Predation is widely regarded as a means to prevent or minimise the establishment of a stunted (high density of slow growing individuals) population. We investigated the effect of predation on two different white perch Morone americana populations (stunted and nonstunted) by examining the stomach contents of piscivorous fishes. White perch and gizzard shad dominated piscivore diets in Branched Oak Lake, whereas white perch dominated piscivore diets in Pawnee Lake. White perch consumed in the stunted population (Branched Oak Lake) were larger and older than white perch consumed in the nonstunted population (Pawnee Lake). Many of the consumed white perch in the stunted population were sexually mature and had the opportunity to spawn at least once. In contrast, all of the consumed white perch in the nonstunted population were sexually immature. Predation may have reinforced the stunting of white perch in Branched Oak Lake through removal of the largest, oldest individuals. ?? 2010 John Wiley & Sons A/S.

Gendered racial exclusion among White internet daters.

PubMed

Feliciano, Cynthia; Robnett, Belinda; Komaie, Golnaz

2009-03-01

Acceptance by the dominant group reveals the current standing of racial groups in the U.S. hierarchy, as well as the possibility for assimilation. However, few researchers have addressed the gendered nature of racial preferences by whites. We examine whites' exclusion of blacks, Latinos, Asians, Middle Easterners, East Indians and Native Americans as possible dates, using a sample of profiles collected from an internet dating website. We find that white men are more willing than white women to date non-whites in general, yet, with the exception of their top two preferences for dates, whites and Latinos, the racial hierarchies of males and females differ. Among daters with stated racial preferences, white men are more likely to exclude blacks as possible dates, while white women are more likely to exclude Asians. We argue that exclusion relates to racialized images of masculinity and femininity, and shapes dating and marriage outcomes, and thus minority groups' possibilities for full social incorporation.

More eyes on the prize: variability in White Americans' perceptions of progress toward racial equality.

PubMed

Brodish, Amanda B; Brazy, Paige C; Devine, Patricia G

2008-04-01

Much recent research suggests that Whites and non-Whites think differently about issues of race in contemporary America. For example, Eibach and Ehrlinger (2006) recently demonstrated that Whites perceive that more progress toward racial equality has been made as compared to non-Whites. The authors of this article sought to extend Eibach and Ehrlinger's analysis. To this end, they found that differences in Whites' and non-Whites' perceptions of racial progress can be explained by the reference points they use for understanding progress toward racial equality (Study 1). Furthermore, they demonstrated that there is variability in White people's perceptions of racial progress that can be explained by self-reported racial prejudice (Studies 1 and 2). Finally, they demonstrated that White people's perceptions of racial progress predict reactions to affirmative action (Study 2). Implications for better understanding intergroup relations and reactions to social policies are discussed.

Vulnerability of young white sturgeon, Acipenser transmontanus, to predation in the presence of alternative prey

USGS Publications Warehouse

Gadomski, D.M.; Parsley, M.J.

2005-01-01

We conducted laboratory trials to test the vulnerability of young white sturgeon, Acipenser transmontanus, to predation when an alternative prey was available. In trials with two species of predators, we observed two feeding patterns. When equal numbers of white sturgeon and goldfish, Carassius auratus, were available, prickly sculpins, Cottus asper, ingested more white sturgeon. Conversely, northern pikeminnow, Ptychocheilus oregonensis, ate more juvenile coho salmon, Oncorhynchus kisutch, than white sturgeon in three out of four sets of trials, but ate more white sturgeon in one set of trials. White sturgeon size and the availability of cover did not affect the proportions of prey species ingested. Our results indicate that predation may be affecting survival of white sturgeon larvae and juveniles in the wild and could be one factor limiting recruitment of young-of-the-year white sturgeon in some locations. ?? Springer 2005.

White opioids: Pharmaceutical race and the war on drugs that wasn't.

PubMed

Netherland, Julie; Hansen, Helena

2017-06-01

The US 'War on Drugs' has had a profound role in reinforcing racial hierarchies. Although Black Americans are no more likely than Whites to use illicit drugs, they are 6-10 times more likely to be incarcerated for drug offenses. Meanwhile, a very different system for responding to the drug use of Whites has emerged. This article uses the recent history of White opioids - the synthetic opiates such as OxyContin ® that gained notoriety starting in the 1990s in connection with epidemic prescription medication abuse among White, suburban and rural Americans and Suboxone ® that came on the market as an addiction treatment in the 2000s - to show how American drug policy is racialized, using the lesser known lens of decriminalized White drugs. Examining four 'technologies of whiteness' (neuroscience, pharmaceutical technology, legislative innovation and marketing), we trace a separate system for categorizing and disciplining drug use among Whites. This less examined 'White drug war' has carved out a less punitive, clinical realm for Whites where their drug use is decriminalized, treated primarily as a biomedical disease, and where their whiteness is preserved, leaving intact more punitive systems that govern the drug use of people of color.

White vegetables: glycemia and satiety.

PubMed

Anderson, G Harvey; Soeandy, Chesarahmia Dojo; Smith, Christopher E

2013-05-01

The objective of this review is to discuss the effect of white vegetable consumption on glycemia, satiety, and food intake. White vegetables is a term used to refer to vegetables that are white or near white in color and include potatoes, cauliflowers, turnips, onions, parsnips, white corn, kohlrabi, and mushrooms (technically fungi but generally considered a vegetable). They vary greatly in their contribution to the energy and nutrient content of the diet and glycemia and satiety. As with other foods, the glycemic effect of many white vegetables has been measured. The results illustrate that interpretation of the semiquantitative comparative ratings of white vegetables as derived by the glycemic index must be context dependent. As illustrated by using the potato as an example, the glycemic index of white vegetables can be misleading if not interpreted in the context of the overall contribution that the white vegetable makes to the carbohydrate and nutrient composition of the diet and their functionality in satiety and metabolic control within usual meals. It is concluded that application of the glycemic index in isolation to judge the role of white vegetables in the diet and, specifically in the case of potato as consumed in ad libitum meals, has led to premature and possibly counterproductive dietary guidance.

Characterization of White Matter Injury in a Rat Model of Chronic Cerebral Hypoperfusion.

PubMed

Choi, Bo-Ryoung; Kim, Dong-Hee; Back, Dong Bin; Kang, Chung Hwan; Moon, Won-Jin; Han, Jung-Soo; Choi, Dong-Hee; Kwon, Kyoung Ja; Shin, Chan Young; Kim, Bo-Ram; Lee, Jongmin; Han, Seol-Heui; Kim, Hahn Young

2016-02-01

Chronic cerebral hypoperfusion can lead to ischemic white matter injury resulting in vascular dementia. To characterize white matter injury in vascular dementia, we investigated disintegration of diverse white matter components using a rat model of chronic cerebral hypoperfusion. Chronic cerebral hypoperfusion was modeled in Wistar rats by permanent occlusion of the bilateral common carotid arteries. We performed cognitive behavioral tests, including the water maze task, odor discrimination task, and novel object test; histological investigation of neuroinflammation, oligodendrocytes, myelin basic protein, and nodal or paranodal proteins at the nodes of Ranvier; and serial diffusion tensor imaging. Cilostazol was administered to protect against white matter injury. Diverse cognitive impairments were induced by chronic cerebral hypoperfusion. Disintegration of white matter was characterized by neuroinflammation, loss of oligodendrocytes, attenuation of myelin density, structural derangement at the nodes of Ranvier, and disintegration of white matter tracts. Cilostazol protected against cognitive impairments and white matter disintegration. White matter injury induced by chronic cerebral hypoperfusion can be characterized by disintegration of diverse white matter components. Cilostazol might be a therapeutic strategy against white matter disintegration in patients with vascular dementia. © 2015 American Heart Association, Inc.

Does functional MRI detect activation in white matter? A review of emerging evidence, issues, and future directions

PubMed Central

Gawryluk, Jodie R.; Mazerolle, Erin L.; D'Arcy, Ryan C. N.

2014-01-01

Functional magnetic resonance imaging (fMRI) is a non-invasive technique that allows for visualization of activated brain regions. Until recently, fMRI studies have focused on gray matter. There are two main reasons white matter fMRI remains controversial: (1) the blood oxygen level dependent (BOLD) fMRI signal depends on cerebral blood flow and volume, which are lower in white matter than gray matter and (2) fMRI signal has been associated with post-synaptic potentials (mainly localized in gray matter) as opposed to action potentials (the primary type of neural activity in white matter). Despite these observations, there is no direct evidence against measuring fMRI activation in white matter and reports of fMRI activation in white matter continue to increase. The questions underlying white matter fMRI activation are important. White matter fMRI activation has the potential to greatly expand the breadth of brain connectivity research, as well as improve the assessment and diagnosis of white matter and connectivity disorders. The current review provides an overview of the motivation to investigate white matter fMRI activation, as well as the published evidence of this phenomenon. We speculate on possible neurophysiologic bases of white matter fMRI signals, and discuss potential explanations for why reports of white matter fMRI activation are relatively scarce. We end with a discussion of future basic and clinical research directions in the study of white matter fMRI. PMID:25152709

Effect of chicken, fat and vegetable on glycaemia and insulinaemia to a white rice-based meal in healthy adults.

PubMed

Sun, Lijuan; Ranawana, Dinesh Viren; Leow, Melvin Khee-Shing; Henry, Christiani Jeyakumar

2014-12-01

White rice is the main staple for the majority in the world. The effects of protein, fat and vegetables on the glycaemic and insulinaemic responses to a white rice-based meal have not been reported. The aim of this study was to determine the effect of co-ingesting a high-protein food (breast chicken), a fat (ground nut oil), a leafy vegetable or all three on the glycaemic and insulinaemic responses of white rice in healthy adults. This was a randomized crossover trial conducted at the Clinical Nutrition Research Centre in Singapore. Twelve healthy volunteers were given five test meals (white rice alone, white rice with chicken, white rice with oil, white rice with vegetable and white rice with chicken, oil and vegetable) once and the reference food (glucose solution) three times in a random order at 1-week intervals. Capillary blood samples were then drawn serially for 3 h, and glucose and insulin were analysed. The glycaemic response (GR) to white rice with chicken breast, ground nut oil and vegetable was significantly lower than to white rice alone. The glycaemic index (GI) of pure white rice was 96, whereas combined with chicken breast, ground nut oil and vegetable, it was 50. The addition of oil delayed the peak glucose response and reduced the iAUC, resulting in a GI value of 67. The addition of chicken and vegetable resulted in a GI value of 73 and 82, respectively. The insulinaemic index (II) of the white rice-based meals varied between 54 and 89. Chicken breast in the meal increased the insulinaemic response and decreased the GR. White rice II was lower than the glucose control, which indicated that the former was not as insulinogenic as the latter. White rice with vegetable had the lowest II. Co-ingesting chicken, oil or vegetable with white rice considerably influences its glycaemic and insulinaemic responses. Co-ingesting white rice with all three components attenuates the GR to a greater degree than when it is eaten with any single one of them, and that this is not at the cost of an increased demand for insulin.

Comparison of postoperative vault height predictability using white-to-white or sulcus diameter-based sizing for the visian implantable collamer lens.

PubMed

Reinstein, Dan Z; Lovisolo, Carlo F; Archer, Timothy J; Gobbe, Marine

2013-01-01

To compare vault height predictability of Implantable Collamer Lens (ICL; Staar Surgical) sizing using a sulcus diameter-based formula or the manufacturer-recommended white-to-white-based method. In 50 myopic eyes, ICL size was calculated using both a formula including sulcus diameter and the traditional formula based on white-to-white diameter. Sulcus diameter was measured using Artemis 2 very high-frequency (VHF) digital ultrasound (ArcScan Inc). Implantation was based on the sulcus diameter derived size. Actual postoperative vault height achieved was measured by VHF digital ultrasound scanning. Circle segment trigonometry was used to calculate the vault height that would have resulted had lens sizing been based on the white-to-white formula. The same lens size would have been used in 60% of eyes, a smaller lens would have been used in 34% of eyes and a larger lens in 6% of eyes had lens sizing been based on the white-to-white formula. Mean vault for eyes with lenses sized using the sulcus diameter formula was 0.37±0.16 mm (range: 0.08 to 0.92 mm), with 2% <0.09 mm, the recognized low-vault height for risk of cataract. Circle segment trigonometry predicted that the vault height would have been 0.24±0.28 mm (range: -0.31 to 0.92 mm), with 26% <0.09 mm had lens sizing been based on the white-to-white formula. Significantly better predictability of postoperative vault height was achieved by including sulcus diameter into the ICL sizing formula compared with using the traditional white-to-white-based formula. Copyright 2013, SLACK Incorporated.

Optical and biochemical properties of a southwest Florida whiting event

NASA Astrophysics Data System (ADS)

Long, Jacqueline S.; Hu, Chuanmin; Robbins, Lisa L.; Byrne, Robert H.; Paul, John H.; Wolny, Jennifer L.

2017-09-01

;Whiting; in oceanography is a term used to describe a sharply defined patch of water that contains high levels of suspended, fine-grained calcium carbonate (CaCO3). Whitings have been reported in many oceanic and lake environments, and recently have been reported in southwest Florida coastal waters. Here, field and laboratory measurements were used to study optical, biological, and chemical properties of whiting waters off southwest Florida. No significant difference was found in chlorophyll a concentrations between whiting and outside waters (non-whiting water), but average particle backscattering coefficients in whiting waters were double those in outside waters, and remote sensing reflectance in whiting waters was higher at all wavelengths (400-700 nm). While other potential causes cannot be completely ruled out, particle composition and biochemical differences between sampled whiting water, contiguous water, and outside water indicate a biologically precipitated mode of whiting formation. Taxonomic examination of marine phytoplankton samples collected during a whiting event revealed a community dominated by autotrophic picoplankton and a small (<10 μm), centric diatom species, identified as Thalassiosira sp. through the use of scanning electron microscopy. Amorphous to fully formed crystals of CaCO3 were observed along the girdle bands of Thalassiosira sp. cells and autotrophic picoplankton cells. Although carbonate parameters differed from whiting and contiguous to outside water, more sampling is needed to determine if these results are statistically significant.

On the failure to notice that White people are White: Generating and testing hypotheses in the celebrity guessing game.

PubMed

Hegarty, Peter

2017-01-01

Drawing together social psychologists' concerns with equality and cognitive psychologists' concerns with scientific inference, 6 studies (N = 841) showed how implicit category norms make the generation and test of hypothesis about race highly asymmetric. Having shown that Whiteness is the default race of celebrity actors (Study 1), Study 2 used a variant of Wason's (1960) rule discovery task to demonstrate greater difficulty in discovering rules that require specifying that race is shared by White celebrity actors than by Black celebrity actors. Clues to the Whiteness of White actors from analogous problems had little effect on hypothesis formation or rule discovery (Studies 3 and 4). Rather, across Studies 2 and 4 feedback about negative cases-non-White celebrities-facilitated the discovery that White actors shared a race, whether participants or experimenters generated the negative cases. These category norms were little affected by making White actors' Whiteness more informative (Study 5). Although participants understood that discovering that White actors are White would be harder than discovering that Black actors are Black, they showed limited insight into the information contained in negative cases (Study 6). Category norms render some identities as implicit defaults, making hypothesis formation and generalization about real social groups asymmetric in ways that have implications for scientific reasoning and social equality. (PsycINFO Database Record (c) 2017 APA, all rights reserved).

Narrative Constructions of Whiteness among White Undergraduates

ERIC Educational Resources Information Center

Foste, Zak

2017-01-01

This critical narrative inquiry was guided by two overarching research questions. First, this study examined how white undergraduates interpreted and gave meaning to their white racial identities. This line of inquiry sought to understand how participants made sense of their white racial selves, the self in relation to people of color, and the…

"Things Get Glossed Over": Rearticulating the Silencing Power of Whiteness in Education

ERIC Educational Resources Information Center

Haviland, Victoria S.

2008-01-01

This article investigates the ways that White teachers approach issues of race, racism, and White supremacy in White-dominated educational settings. Drawing from data from a yearlong qualitative research study, the article uses discourse analysis, critical studies of Whiteness, and feminist theory to detail 15 rhetorical, behavioral, analytical,…

21 CFR 160.140 - Egg whites.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Egg whites. 160.140 Section 160.140 Food and Drugs... CONSUMPTION EGGS AND EGG PRODUCTS Requirements for Specific Standardized Eggs and Egg Products § 160.140 Egg whites. (a) Egg whites, liquid egg whites, liquid egg albumen is the food obtained from eggs of the...

"Being White in a Multicultural Society": Critical Whiteness Pedagogy in a Dialogue Course

ERIC Educational Resources Information Center

Yeung, Jeffrey G.; Spanierman, Lisa B.; Landrum-Brown, Joycelyn

2013-01-01

The purpose of the present study was to investigate White students' experiences in an intergroup dialogue course that employed critical Whiteness pedagogy (Kincheloe & Steinberg, 2000) and focused on being White in a multicultural society. Using a qualitative approach, the authors investigated student participants' (n = 6) perceptions of the…

Protect and Survive: "Whiteness" and the Middle-Class Family in Civil Defence Pedagogies

ERIC Educational Resources Information Center

Preston, John

2008-01-01

"Civil defence pedagogies" normalise continuous emergency through educational channels such as school, community and adult education. Using critical whiteness studies, and critiques of white supremacy from critical race theory, as a conceptual base, the protection of whiteness, and particularly the white middle-class family, is considered to be…

Anti-Racist Scholarship: An Advocacy. SUNY Series, Social Context of Education.

ERIC Educational Resources Information Center

Scheurich, James Joseph, Ed.

These papers examine the subject of white scholars using anti-racist scholarship within the long-term U.S. civil rights struggle to create real equality. Chapter 1 includes: "Toward a White Discourse on White Racism" (James Joseph Scheurich), "Response to a 'White Discourse on White Racism'" (W. B. Allen), "Advancing a…

21 CFR 160.140 - Egg whites.

Code of Federal Regulations, 2011 CFR

2011-04-01

... 21 Food and Drugs 2 2011-04-01 2011-04-01 false Egg whites. 160.140 Section 160.140 Food and Drugs... CONSUMPTION EGGS AND EGG PRODUCTS Requirements for Specific Standardized Eggs and Egg Products § 160.140 Egg whites. (a) Egg whites, liquid egg whites, liquid egg albumen is the food obtained from eggs of the...

Racial bias in pain assessment and treatment recommendations, and false beliefs about biological differences between blacks and whites.

PubMed

Hoffman, Kelly M; Trawalter, Sophie; Axt, Jordan R; Oliver, M Norman

2016-04-19

Black Americans are systematically undertreated for pain relative to white Americans. We examine whether this racial bias is related to false beliefs about biological differences between blacks and whites (e.g., "black people's skin is thicker than white people's skin"). Study 1 documented these beliefs among white laypersons and revealed that participants who more strongly endorsed false beliefs about biological differences reported lower pain ratings for a black (vs. white) target. Study 2 extended these findings to the medical context and found that half of a sample of white medical students and residents endorsed these beliefs. Moreover, participants who endorsed these beliefs rated the black (vs. white) patient's pain as lower and made less accurate treatment recommendations. Participants who did not endorse these beliefs rated the black (vs. white) patient's pain as higher, but showed no bias in treatment recommendations. These findings suggest that individuals with at least some medical training hold and may use false beliefs about biological differences between blacks and whites to inform medical judgments, which may contribute to racial disparities in pain assessment and treatment.

Saving the child to save the nation: poverty, whiteness and childhood in the Cape Colony, c.1870-1895.

PubMed

Duff, S E

2011-01-01

Children were central to efforts to eradicate white impoverishment in the Cape Colony in the late nineteenth century. The education and training of poor, white children were believed to be the most effective ways of breaking cycles of poverty, and of ensuring continuing white control over the Cape's resources. Yet a closer reading of the evidence presented to the 1894 Labour Commission and the committee appointed to investigate the Destitute Children Relief Bill suggests that this interest in poor, white children also stemmed from concerns about the children themselves. Destitute white children - both male and female - were described, frequently, as representing a threat to the social, moral, and even economic order, and this view of poor white children shaped official responses to white poverty. This concern for white children reflected not solely their status as 'children' - that they represented the colony's future, were fairly malleable, and could be more easily 'reached' by projects and schemes to eradicate white poverty - but also their problematic class position in a colonial racial order that sought their reform, direction and education into acceptable productive citizens.

Racial progress as threat to the status hierarchy: implications for perceptions of anti-White bias.

PubMed

Wilkins, Clara L; Kaiser, Cheryl R

2014-02-01

In three studies, we examined how racial progress affects Whites' perceptions of anti-White bias. When racial progress was chronically (Study 1) and experimentally (Study 2) salient, Whites who believed the current U.S. status hierarchy was legitimate were more likely to report that Whites were victims of racial discrimination. In contrast, Whites who perceived the current status system as illegitimate were unaffected by the salience of racial progress. The results of Study 3 point to the role of threat in explaining these divergent reactions to racial progress. When self-affirmed, Whites who perceived the status hierarchy as legitimate no longer showed increased perceptions of anti-White bias when confronted with evidence of racial progress. Implications for policies designed to remedy social inequality are discussed.

Lifetime prevalence of childhood eczema and the effect of indoor environmental factors: Analysis in Hispanic and non-Hispanic white children

PubMed Central

Kim, Hyo-Bin; Zhou, Hui; Kim, Jeong Hee; Habre, Rima; Bastain, Theresa M.

2016-01-01

Background: The prevalence of eczema varies markedly across the globe. It is unclear whether the geographic variation is due to race and/or ethnic differences, environmental exposures, or genetic factors. Objective: We investigated the effects of ethnicity and environmental exposures on eczema in Hispanic white and non-Hispanic white children who participated in the Southern California Children's Health Study. Methods: We performed a cross-sectional study with sociodemographic predictors and environmental exposures among Hispanic white and non-Hispanic white children ages 4–8 years enrolled in the Children's Health Study, 2002–2003. Results: Eczema prevalence differed by ethnicity: Hispanic whites showed lower prevalence (13.8%) compared with non-Hispanic whites (20.2%), and adjustment for sociodemographic factors did not account for the ethnic difference (odds ratio [OR] 0.79 [95% confidence interval {CI}, 0.65–0.95]). Parental history of allergic disease had a larger effect in Hispanic whites than in non-Hispanic whites (p for interaction = 0.005). High maternal education level (OR 1.46 [95% CI, 1.14–1.87]), parental history of allergic disease (OR 2.21 [95% CI, 1.78–2.76]), and maternal smoking during pregnancy (OR 1.44 [95% CI, 1.06–1.95]) increased the risk of eczema. Indoor environmental factors (e.g., mold, water damage, humidifier use) increased the risk of eczema in non-Hispanic whites independent of a parental history of allergic disease, but, in Hispanic whites, increased risks were observed, primarily in children without a parental history of allergic disease. Conclusion: Hispanic white children in southern California had a lower prevalence of eczema than non-Hispanic whites, and this ethnic difference was not accounted for by sociodemographic differences. The effects of a parental history of allergic disease and indoor environmental exposures on eczema varied by ethnicity, which indicated that the etiology of eczema may differ in Hispanic whites and in non-Hispanic whites. PMID:26831849

Lifetime prevalence of childhood eczema and the effect of indoor environmental factors: Analysis in Hispanic and non-Hispanic white children.

PubMed

Kim, Hyo-Bin; Zhou, Hui; Kim, Jeong Hee; Habre, Rima; Bastain, Theresa M; Gilliland, Frank D

2016-01-01

The prevalence of eczema varies markedly across the globe. It is unclear whether the geographic variation is due to race and/or ethnic differences, environmental exposures, or genetic factors. We investigated the effects of ethnicity and environmental exposures on eczema in Hispanic white and non-Hispanic white children who participated in the Southern California Children's Health Study. We performed a cross-sectional study with sociodemographic predictors and environmental exposures among Hispanic white and non-Hispanic white children ages 4-8 years enrolled in the Children's Health Study, 2002-2003. Eczema prevalence differed by ethnicity: Hispanic whites showed lower prevalence (13.8%) compared with non-Hispanic whites (20.2%), and adjustment for sociodemographic factors did not account for the ethnic difference (odds ratio [OR] 0.79 [95% confidence interval {CI}, 0.65-0.95]). Parental history of allergic disease had a larger effect in Hispanic whites than in non-Hispanic whites (p for interaction = 0.005). High maternal education level (OR 1.46 [95% CI, 1.14-1.87]), parental history of allergic disease (OR 2.21 [95% CI, 1.78-2.76]), and maternal smoking during pregnancy (OR 1.44 [95% CI, 1.06-1.95]) increased the risk of eczema. Indoor environmental factors (e.g., mold, water damage, humidifier use) increased the risk of eczema in non-Hispanic whites independent of a parental history of allergic disease, but, in Hispanic whites, increased risks were observed, primarily in children without a parental history of allergic disease. Hispanic white children in southern California had a lower prevalence of eczema than non-Hispanic whites, and this ethnic difference was not accounted for by sociodemographic differences. The effects of a parental history of allergic disease and indoor environmental exposures on eczema varied by ethnicity, which indicated that the etiology of eczema may differ in Hispanic whites and in non-Hispanic whites.

White-matter functional networks changes in patients with schizophrenia.

PubMed

Jiang, Yuchao; Luo, Cheng; Li, Xuan; Li, Yingjia; Yang, Hang; Li, Jianfu; Chang, Xin; Li, Hechun; Yang, Huanghao; Wang, Jijun; Duan, Mingjun; Yao, Dezhong

2018-04-13

Resting-state functional MRI (rsfMRI) is a useful technique for investigating the functional organization of human gray-matter in neuroscience and neuropsychiatry. Nevertheless, most studies have demonstrated the functional connectivity and/or task-related functional activity in the gray-matter. White-matter functional networks have been investigated in healthy subjects. Schizophrenia has been hypothesized to be a brain disorder involving insufficient or ineffective communication associated with white-matter abnormalities. However, previous studies have mainly examined the structural architecture of white-matter using MRI or diffusion tensor imaging and failed to uncover any dysfunctional connectivity within the white-matter on rsfMRI. The current study used rsfMRI to evaluate white-matter functional connectivity in a large cohort of ninety-seven schizophrenia patients and 126 healthy controls. Ten large-scale white-matter networks were identified by a cluster analysis of voxel-based white-matter functional connectivity and classified into superficial, middle and deep layers of networks. Evaluation of the spontaneous oscillation of white-matter networks and the functional connectivity between them showed that patients with schizophrenia had decreased amplitudes of low-frequency oscillation and increased functional connectivity in the superficial perception-motor networks. Additionally, we examined the interactions between white-matter and gray-matter networks. The superficial perception-motor white-matter network had decreased functional connectivity with the cortical perception-motor gray-matter networks. In contrast, the middle and deep white-matter networks had increased functional connectivity with the superficial perception-motor white-matter network and the cortical perception-motor gray-matter network. Thus, we presumed that the disrupted association between the gray-matter and white-matter networks in the perception-motor system may be compensated for through the middle-deep white-matter networks, which may be the foundation of the extensively disrupted connections in schizophrenia. Copyright © 2018 Elsevier Inc. All rights reserved.

Ethnic disparities in adolescent body mass index in the United States: The role of parental socioeconomic status and economic contextual factors

PubMed Central

Powell, Lisa M.; Wada, Roy; Krauss, Ramona C.; Wang, Youfa

2013-01-01

This paper examined the importance of household and economic contextual factors as determinants of ethnic disparities in adolescent body mass index (BMI). Individual-level data from the National Longitudinal Survey of Youth 1997 for the years 1997 through 2000 were combined with economic contextual data on food prices, outlet density and median household income. The Oaxaca–Blinder decomposition method was used to examine the factors that could help explain ethnic disparities in BMI. Ethnic differences in household demographic, parental socioeconomic status (SES), and economic contextual factors explained the majority of the male black–white (63%), male Hispanic–white (78%) and female Hispanic–white (62%) BMI gaps but less than one-half of the female black–white BMI gap (44%). We found that adding the economic contextual factors increased the explained portion of the ethnic BMI gap for both female and male adolescents: the economic contextual factors explained 28% and 38% of the black–white and Hispanic–white BMI gaps for males and 13% and 8% of the black–white and Hispanic–white BMI gaps for females, respectively. Parental SES was more important in explaining the Hispanic–white BMI gap than the black–white BMI gap for both genders, whereas neighborhood economic contextual factors were more important in explaining the male BMI gap than the female BMI gap for both black–white and Hispanic–white ethnic disparities. A significantly large portion of the ethnic BMI gap, however, remained unexplained between black and white female adolescents. PMID:22607746

Differences from somewhere: the normativity of whiteness in bioethics in the United States.

PubMed

Myser, Catherine

2003-01-01

I argue that there has been inadequate attention to and questioning of the dominance and normativity of whiteness in the cultural construction of bioethics in the United States. Therefore we risk reproducing white privilege and white supremacy in its theory, method, and practices. To make my argument, I define whiteness and trace its broader social and legal history in the United States. I then begin to mark whiteness in U.S. bioethics, recasting Renee Fox's sociological marking of its American-ness as an important initial marking of its whiteness/WASP ethos. Furthermore, I consider the attempts of social scientists to highlight sociocultural diversity as a corrective in U.S. bioethics. I argue that because they fail to problematize white dominance and normativity and the white-other dualism when they describe the standpoints of African-American, Asian-American, and Native-American others, their work merely inoculates difference and creates or maintains minoritized spaces. Accordingly, the dominant white center of mainstream U.S. bioethics must be problematized and displaced for diversity research to make a difference. In conclusion, I give several examples of how we might advance the recommended endeavor of exploring our own ethnicity, class, and other social positioning and norms operating in U.S. bioethics, briefly highlighting "white talk" as one challenge.

White Vegetables: Glycemia and Satiety12

PubMed Central

Anderson, G. Harvey; Soeandy, Chesarahmia Dojo; Smith, Christopher E.

2013-01-01

The objective of this review is to discuss the effect of white vegetable consumption on glycemia, satiety, and food intake. White vegetables is a term used to refer to vegetables that are white or near white in color and include potatoes, cauliflowers, turnips, onions, parsnips, white corn, kohlrabi, and mushrooms (technically fungi but generally considered a vegetable). They vary greatly in their contribution to the energy and nutrient content of the diet and glycemia and satiety. As with other foods, the glycemic effect of many white vegetables has been measured. The results illustrate that interpretation of the semiquantitative comparative ratings of white vegetables as derived by the glycemic index must be context dependent. As illustrated by using the potato as an example, the glycemic index of white vegetables can be misleading if not interpreted in the context of the overall contribution that the white vegetable makes to the carbohydrate and nutrient composition of the diet and their functionality in satiety and metabolic control within usual meals. It is concluded that application of the glycemic index in isolation to judge the role of white vegetables in the diet and, specifically in the case of potato as consumed in ad libitum meals, has led to premature and possibly counterproductive dietary guidance. PMID:23674805

When confrontational images may be counter productive: reinforcing the case for pre-testing communications in sensitive areas.

PubMed

Donovan, Robert J; Jalleh, Geoffrey; Fielder, Lynda; Ouschan, Robyn

2008-08-01

White Ribbon Day is an international campaign that encourages men to speak out about and demonstrate their opposition to violence against women by wearing a white ribbon on 25 November. This study assesses the effectiveness of a graphic confrontational image in the Australian 2006 campaign versus an alternative non-violent image to motivate men to wear a white ribbon on White Ribbon Day. An intercept survey was conducted with a sample of 45 males aged 30-49 years recruited in an inner city suburban shopping strip. Respondents were presented with two alternatives: a graphic 'amputated arm' image and a non-violent 'father-daughter' image. The primary dependent variable was the relative ability of the two alternatives in motivating respondents to wear a white ribbon on White Ribbon Day. The vast majority of respondents nominated the 'father-daughter' as image being more motivating than the 'amputated arm' image to wear a white ribbon on White Ribbon Day: 84% vs 9%. The bland 'father-daughter' image was far more motivating than the macabre/violent 'amputated arm' image in motivating men to wear a white ribbon on White Ribbon Day. This is contrary to the UNIFEM Australia and White Ribbon Day assertion that 'confrontational/provocative' images are necessary to achieve this behaviour.

The Color of Supremacy: Beyond the Discourse of "White Privilege"

ERIC Educational Resources Information Center

Leonardo, Zeus

2004-01-01

In the last decade, the study of white privilege has reached currency in the educational and social science literature. Concerned with the circuits and meanings of whiteness in everyday life, scholars have exposed the codes of white culture, worldview of the white imaginary, and assumptions of the invisible marker that depends on the racial other…

21 CFR 137.270 - Self-rising white corn meal.

Code of Federal Regulations, 2011 CFR

2011-04-01

... 21 Food and Drugs 2 2011-04-01 2011-04-01 false Self-rising white corn meal. 137.270 Section 137... Cereal Flours and Related Products § 137.270 Self-rising white corn meal. (a) Self-rising white corn meal is an intimate mixture of white corn meal, sodium bicarbonate, and one or both of the acid-reacting...

21 CFR 137.270 - Self-rising white corn meal.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Self-rising white corn meal. 137.270 Section 137... Cereal Flours and Related Products § 137.270 Self-rising white corn meal. (a) Self-rising white corn meal is an intimate mixture of white corn meal, sodium bicarbonate, and one or both of the acid-reacting...

"I Never Hear It Talked About": Exploring Discourses of Whiteness in a Predominantly White Elementary School

ERIC Educational Resources Information Center

Heuschkel, Kimberly A.

2013-01-01

Much is known about the practices, beliefs, assumptions, and discourses of teachers as they look at issues of racial, ethnic, and cultural diversity but little has been done to understand how racial injustice is sustained in these school settings and how whiteness operates in predominantly white educational contexts. White elementary school…

The Challenge of White Dialectics: Making the "Invisible" Visible

ERIC Educational Resources Information Center

Sue, Derald Wing

2011-01-01

In this article, the author comments on the substance of Todd and Abrams's study on "White Dialectics: A New Framework for Theory, Research, and Practice With White Students" (2011). The study is a major contribution to the importance of raising awareness of how Whiteness, White privilege, and one's own complicity in the perpetuation of racism are…

Beyond Black and White: How White, Male, College Students See Their Asian American Peers

ERIC Educational Resources Information Center

Cabrera, Nolan L.

2014-01-01

This research is a cross-site analysis of how white, male, college students see their Asian American peers. Semi-structured interviews with 43 white males were conducted at two universities that differed substantially in their representation of Asian American students. The interviews were theoretically framed by Critical Whiteness Studies and Bobo…

Shades of White: White Kids and Racial Identities in High School.

ERIC Educational Resources Information Center

Perry, Pamela

This book discusses what it means to be young, American, and white at the dawn of the 21st century. Through ethnographic research and interviews with students in two demographically diverse high schools (one suburban and predominantly white, and one urban, multiracial, and minority white), the book shares students' candor about race and…

Intergroup Stereotypes of Working Class Blacks and Whites: Implications for Stereotype Threat.

ERIC Educational Resources Information Center

Niemann, Yolanda Flores; O'Connor, Elizabeth; McClorie, Randall

1998-01-01

Examined stereotypes of urban blacks and whites at a flea market with 68 black respondents, and at another flea market with 20 white respondents. Cluster-analysis results show that blacks have a relatively complex, multidimensional representation of themselves and of whites, while whites seem to have a more simplistic and negative view of blacks.…

21 CFR 137.211 - White corn flour.

Code of Federal Regulations, 2011 CFR

2011-04-01

... 21 Food and Drugs 2 2011-04-01 2011-04-01 false White corn flour. 137.211 Section 137.211 Food and... Related Products § 137.211 White corn flour. (a) White corn flour is the food prepared by so grinding and bolting cleaned white corn that when tested by the method prescribed in paragraph (b)(2) of this section...

21 CFR 137.211 - White corn flour.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 21 Food and Drugs 2 2010-04-01 2010-04-01 false White corn flour. 137.211 Section 137.211 Food and... Related Products § 137.211 White corn flour. (a) White corn flour is the food prepared by so grinding and bolting cleaned white corn that when tested by the method prescribed in paragraph (b)(2) of this section...

21 CFR 137.211 - White corn flour.

Code of Federal Regulations, 2013 CFR

2013-04-01

... 21 Food and Drugs 2 2013-04-01 2013-04-01 false White corn flour. 137.211 Section 137.211 Food and... Related Products § 137.211 White corn flour. (a) White corn flour is the food prepared by so grinding and bolting cleaned white corn that when tested by the method prescribed in paragraph (b)(2) of this section...

21 CFR 137.211 - White corn flour.

Code of Federal Regulations, 2014 CFR

2014-04-01

... 21 Food and Drugs 2 2014-04-01 2014-04-01 false White corn flour. 137.211 Section 137.211 Food and... Related Products § 137.211 White corn flour. (a) White corn flour is the food prepared by so grinding and bolting cleaned white corn that when tested by the method prescribed in paragraph (b)(2) of this section...

21 CFR 137.211 - White corn flour.

Code of Federal Regulations, 2012 CFR

2012-04-01

... 21 Food and Drugs 2 2012-04-01 2012-04-01 false White corn flour. 137.211 Section 137.211 Food and... Related Products § 137.211 White corn flour. (a) White corn flour is the food prepared by so grinding and bolting cleaned white corn that when tested by the method prescribed in paragraph (b)(2) of this section...

The Spatial Concentration of Southern Whites and Argument-Based Lethal Violence

ERIC Educational Resources Information Center

Lee, Matthew R.; Shihadeh, Edward S.

2009-01-01

This analysis examines how the spatial concentration of Southern whites is associated with white argument-based lethal violence. Using a well-known measure of spatial segregation (V, the adjusted P* index) among Southern-born whites in U.S. counties in 2000, the results reveal that the spatial concentration of Southern-born whites is only…

76 FR 58535 - Notice of Meeting, Committee for the Preservation of the White House

Federal Register 2010, 2011, 2012, 2013, 2014

2011-09-21

... Meeting, Committee for the Preservation of the White House AGENCY: National Park Service, Interior. ACTION... that a meeting of the Committee for the Preservation of the White House will be held at the White House at 1 p.m. on Tuesday, October 18, 2011. DATES: Tuesday, October 18, 2011. ADDRESSES: The White House...

36 CFR 1260.56 - Is White House originated information subject to mandatory review?

Code of Federal Regulations, 2010 CFR

2010-07-01

... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false Is White House originated... Mandatory Review § 1260.56 Is White House originated information subject to mandatory review? White House... administrations pursuant to 44 U.S.C. 2107 and 2111. Unless precluded by such laws or agreements, White House...

78 FR 70068 - Notice of Meeting, Committee for the Preservation of the White House

Federal Register 2010, 2011, 2012, 2013, 2014

2013-11-22

...] Notice of Meeting, Committee for the Preservation of the White House AGENCY: National Park Service... White House will be held at the White House at 12:00 p.m. on Thursday, December 12, 2013. DATES: Thursday, December 12, 2013. ADDRESSES: The White House, 1600 Pennsylvania Avenue NW., Washington, DC 20500...

Second-Wave White Teacher Identity Studies: Toward Complexity and Reflexivity in the Racial Conscientization of White Teachers

ERIC Educational Resources Information Center

Jupp, James C.; Lensmire, Timothy J.

2016-01-01

In this article, we introduce our special issue, "Second-Wave White Teacher Identity Studies: Toward Complexity and Reflexivity in the Racial Conscientization of White Teachers." We characterize white teacher identity studies as a developing field with important implications for education research and teacher education. Early work in…

36 CFR 1260.56 - Is White House originated information subject to mandatory review?

Code of Federal Regulations, 2011 CFR

2011-07-01

... 36 Parks, Forests, and Public Property 3 2011-07-01 2011-07-01 false Is White House originated... Mandatory Review § 1260.56 Is White House originated information subject to mandatory review? White House... administrations pursuant to 44 U.S.C. 2107 and 2111. Unless precluded by such laws or agreements, White House...

White Principals Examine Power, Privilege, and Identity: The Challenge of Leading for Equity

ERIC Educational Resources Information Center

McCann, Julie McLaughlin

2012-01-01

The purpose of this qualitative study was to examine the experience of white principals in understanding their white identity, privilege, and power as they worked to implement socially-just and culturally proficient schools. The findings offer insights into the following questions: 1) How do white school leaders view white identity and the impact,…

Influence of seed weight on early development of eastern white pine

Treesearch

M. E., Jr. Demeritt; H. W., Jr. Hocker

1975-01-01

In the Northeast, eastern white pine (Pinus strobus L.) cannot be relied upon to consistently regenerate naturally due to the destruction of the cone crops by the white pine cone beetle (Conopthorus coniperda Schwarz). The white pine cone beetle has been reported to have destroyed the white pine cone crops for nine consecutive...

Genetics Home Reference: white sponge nevus

MedlinePlus

... Twitter Home Health Conditions White sponge nevus White sponge nevus Printable PDF Open All Close All Enable ... to view the expand/collapse boxes. Description White sponge nevus is a condition characterized by the formation ...

Solidification of carbon-oxygen white dwarfs

NASA Technical Reports Server (NTRS)

Schatzman, E.

1982-01-01

The internal structure of white dwarfs is discussed. Highly correlated plasmas are reviewed. Implications for phase separation in the core of cooling white dwarfs are considered. The consequences for evolution of white dwarfs are addressed.

From white-collar crime to red-collar crime

PubMed Central

Brody, Richard G.; Kiehl, Kent A.

2014-01-01

Purpose The purpose of this paper is to explore the issue of violence with respect to white-collar criminals. Design/methodology/approach The analysis is conceptual, focusing on the historical underpinnings of white-collar crime and reviewing the evolution of white-collar criminals. Findings Findings suggest that white-collar criminals do display violent tendencies and, contrary to popular belief, can become dangerous individuals. Practical implications The paper represents an extremely useful and practical source for fraud examiners and other white-collar crime investigators. Raising the mvareness of investigators dealing with white-collar criminals may prevent them from becoming victims of a violent act. Originality/value The paper fulfills a need to highlight a dangerous trend with white-collar criminals in that they may be driven to violence against those involved in investigating their crimes. PMID:25414590

Analyzing the Effects of Stellar Evolution on White Dwarf Ages

NASA Astrophysics Data System (ADS)

Moss, Adam; Von Hippel, Ted, Dr.

2018-01-01

White dwarfs are among the oldest objects in our Galaxy, thus if we can determine their ages, we can derive the star formation history of our Galaxy. As part of a larger project that will use Gaia parallaxes to derive the ages of tens of thousands of white dwarfs, we explore the impact on the total white dwarf age of various modern models of main sequence and red giant branch stellar evolution, as well as uncertainties in progenitor metallicity. In addition, we study the effect on white dwarf ages caused by uncertainties in the Initial Final Mass Relation, which is the mapping between zero age main sequence and white dwarf masses. We find that for old and high mass white dwarfs, uncertainties in these factors have little effect on the total white dwarf age.

Birth order and sibling sex ratio in homosexual and heterosexual non-white men.

PubMed

Bogaert, A F

1998-10-01

Researchers interested in the development of sexual orientation have investigated predominantly or exclusively White samples. To address this imbalance, the relations between sexual orientation and two biodemographic variables, birth order and sibling sex ratio, were examined in a sample of non-White men. The men (N = 823) were interviewed by investigators at the Kinsey Institute for Sex and Reproduction from 1938 to 1963. A significantly later birth order was observed for non-White homosexual men relative to non-White heterosexual men. Non-White homosexual men also had an elevated sibling sex ratio. Results add to the generalizability of the birth order and sibling sex ratio effects previously observed to occur in (White) homosexual men.

On the long term evolution of white dwarfs in cataclysmic variables and their recurrence times

NASA Technical Reports Server (NTRS)

Sion, E. M.; Starrfield, S. G.

1985-01-01

The relevance of the long term quasi-static evolution of accreting white dwarfs to the outbursts of Z Andromeda-like symbiotics; the masses and accretion rates of classical nova white dwarfs; and the observed properties of white dwarfs detected optically and with IUE in low M dot cataclysmic variables is discussed. A surface luminosity versus time plot for a massive, hot white dwarf bears a remarkable similarity to the outburst behavior of the hot blue source in Z Andromeda. The long term quasi-static models of hot accreting white dwarfs provide convenient constraints on the theoretically permissible parameters to give a dynamical (nova-like) outburst of classic white dwarfs.

Beyond the Face of Race: Emo-Cognitive Explorations of White Neurosis and Racial Cray-Cray

ERIC Educational Resources Information Center

Matias, Cheryl E.; DiAngelo, Robin

2013-01-01

In this article, the authors focus on the emotional and cognitive context that underlies whiteness. They employ interdisciplinary approaches of critical Whiteness studies and critical race theory to entertain how common White responses to racial material stem from the need for Whites to deny race, a traumatizing process that begins in childhood.…

The climatic distribution of blister rust on white pine in Wisconsin

Treesearch

E.P. Van Arsdel; A.J. Riker; T.F. Kouba; V.E. Suomi; R.A. Bryson

1961-01-01

White pine blister rust limits the reproduction of white pine in many areas by killing young trees. In other extensive areas unjustified fear of the disease limits white pine planting. An ability to differentiate the sites on which white pine blister rust (caused by Cronartium ribicola Fischer) might be serious from those on which the disease might...

Some recent developments in white-pine weevil research in the Northeast

Treesearch

H. A. Jaynes

1958-01-01

Eastern white pine is one of the most important sawtimber species in the Northeast. This species would have still greater potential value were it not for the white-pine weevil, Pissodes strobi (Peck), its most serious insect pest. This is a native insect that occurs throughout the range of eastern white pine. A large percentage of the white pines in...

21 CFR 864.8185 - Calibrator for red cell and white cell counting.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Calibrator for red cell and white cell counting... Calibrator for red cell and white cell counting. (a) Identification. A calibrator for red cell and white cell counting is a device that resembles red or white blood cells and that is used to set instruments intended...

The Veil of Professionalism: An Autoethnographic Critique of White Positional Identities in the Figured Worlds of White Research Performance

ERIC Educational Resources Information Center

Pennington, Julie L.; Prater, Kathryn

2016-01-01

Two white researchers critique the professional veil of silence they created as they reflected on a qualitative study they performed 12 years earlier. Autoethnography and performance ethnography are utilized to examine the ways in which whiteness can remain unexamined throughout the research process due to the construction of white positional…

Second-Wave White Teacher Identity Studies: A Review of White Teacher Identity Literatures From 2004 through 2014

ERIC Educational Resources Information Center

Jupp, James C.; Berry, Theodorea Regina; Lensmire, Timothy J.

2016-01-01

In this study of White teacher identity literatures, we historicize, define, and advance second-wave White teacher identity studies in education research and teacher education. First, we provide a discussion of methodology used to conduct this study called the synoptic text. Second, we provide an historical account of White teacher identity…

White pine blister rust resistance of 12 western white pine families at three field sites in the Pacific Northwest

Treesearch

Richard A. Sniezko; Robert Danchok; Jim Hamlin; Angelia Kegley; Sally Long; James Mayo

2012-01-01

Western white pine (Pinus monticola Douglas ex D. Don) is highly susceptible to the non-native, invasive pathogen Cronartium ribicola, the causative agent of white pine blister rust. The susceptibility of western white pine to blister rust has limited its use in restoration and reforestation throughout much of western North...

Racial bias in pain assessment and treatment recommendations, and false beliefs about biological differences between blacks and whites

PubMed Central

Hoffman, Kelly M.; Trawalter, Sophie; Axt, Jordan R.; Oliver, M. Norman

2016-01-01

Black Americans are systematically undertreated for pain relative to white Americans. We examine whether this racial bias is related to false beliefs about biological differences between blacks and whites (e.g., “black people’s skin is thicker than white people’s skin”). Study 1 documented these beliefs among white laypersons and revealed that participants who more strongly endorsed false beliefs about biological differences reported lower pain ratings for a black (vs. white) target. Study 2 extended these findings to the medical context and found that half of a sample of white medical students and residents endorsed these beliefs. Moreover, participants who endorsed these beliefs rated the black (vs. white) patient’s pain as lower and made less accurate treatment recommendations. Participants who did not endorse these beliefs rated the black (vs. white) patient’s pain as higher, but showed no bias in treatment recommendations. These findings suggest that individuals with at least some medical training hold and may use false beliefs about biological differences between blacks and whites to inform medical judgments, which may contribute to racial disparities in pain assessment and treatment. PMID:27044069

Prevalence of High-Risk Sexual Behaviors Among Monoracial and Multiracial Groups from a National Sample: Are Multiracial Young Adults at Greater Risk?

PubMed

Landor, Antoinette M; Halpern, Carolyn Tucker

2016-02-01

The present study compared the prevalence and variation in high-risk sexual behaviors among four monoracial (i.e., White, African American, Asian, Native American) and four multiracial (i.e., White/African American, White/Asian, White/Native American, African American/Native American) young adults using Wave IV data (2008-2009) from the National Longitudinal Study of Adolescent to Adult Health (N = 9724). Findings indicated differences in the sexual behavior of monoracial and multiracial young adults, but directions of differences varied depending on the monoracial group used as the referent and gender. Among males, White/African Americans had higher risk than Whites; White/Native Americans had higher risk than Native Americans. Otherwise, multiracial groups had lower risk or did not differ from the single-race groups. Among females, White/Native Americans had higher risk than Whites; White/African Americans had higher risk than African Americans. Other comparisons showed no differences or had lower risk among multiracial groups. Variations in high-risk sexual behaviors underscore the need for health research to disaggregate multiracial groups to better understand health behaviors and outcomes in the context of experiences associated with a multiracial background, and to improve prevention strategies.

Genetic differentiation of chinese indigenous meat goats ascertained using microsatellite information.

PubMed

Ling, Y H; Zhang, X D; Yao, N; Ding, J P; Chen, H Q; Zhang, Z J; Zhang, Y H; Ren, C H; Ma, Y H; Zhang, X R

2012-02-01

To investigate the genetic diversity of seven Chinese indigenous meat goat breeds (Tibet goat, Guizhou white goat, Shannan white goat, Yichang white goat, Matou goat, Changjiangsanjiaozhou white goat and Anhui white goat), explain their genetic relationship and assess their integrity and degree of admixture, 302 individuals from these breeds and 42 Boer goats introduced from Africa as reference samples were genotyped for 11 microsatellite markers. Results indicated that the genetic diversity of Chinese indigenous meat goats was rich. The mean heterozygosity and the mean allelic richness (AR) for the 8 goat breeds varied from 0.697 to 0.738 and 6.21 to 7.35, respectively. Structure analysis showed that Tibet goat breed was genetically distinct and was the first to separate and the other Chinese goats were then divided into two sub-clusters: Shannan white goat and Yichang white goat in one cluster; and Guizhou white goat, Matou goat, Changjiangsanjiaozhou white goat and Anhui white goat in the other cluster. This grouping pattern was further supported by clustering analysis and Principal component analysis. These results may provide a scientific basis for the characteristization, conservation and utilization of Chinese meat goats.

Mutations in MITF and PAX3 Cause “Splashed White” and Other White Spotting Phenotypes in Horses

PubMed Central

Blatter, Marlis; Brooks, Samantha A.; Burger, Dominik; Drögemüller, Cord; Gerber, Vincent; Henke, Diana; Janda, Jozef; Jude, Rony; Magdesian, K. Gary; Matthews, Jacqueline M.; Poncet, Pierre-André; Svansson, Vilhjálmur; Tozaki, Teruaki; Wilkinson-White, Lorna; Penedo, M. Cecilia T.; Rieder, Stefan; Leeb, Tosso

2012-01-01

During fetal development neural-crest-derived melanoblasts migrate across the entire body surface and differentiate into melanocytes, the pigment-producing cells. Alterations in this precisely regulated process can lead to white spotting patterns. White spotting patterns in horses are a complex trait with a large phenotypic variance ranging from minimal white markings up to completely white horses. The “splashed white” pattern is primarily characterized by an extremely large blaze, often accompanied by extended white markings at the distal limbs and blue eyes. Some, but not all, splashed white horses are deaf. We analyzed a Quarter Horse family segregating for the splashed white coat color. Genome-wide linkage analysis in 31 horses gave a positive LOD score of 1.6 in a region on chromosome 6 containing the PAX3 gene. However, the linkage data were not in agreement with a monogenic inheritance of a single fully penetrant mutation. We sequenced the PAX3 gene and identified a missense mutation in some, but not all, splashed white Quarter Horses. Genome-wide association analysis indicated a potential second signal near MITF. We therefore sequenced the MITF gene and found a 10 bp insertion in the melanocyte-specific promoter. The MITF promoter variant was present in some splashed white Quarter Horses from the studied family, but also in splashed white horses from other horse breeds. Finally, we identified two additional non-synonymous mutations in the MITF gene in unrelated horses with white spotting phenotypes. Thus, several independent mutations in MITF and PAX3 together with known variants in the EDNRB and KIT genes explain a large proportion of horses with the more extreme white spotting phenotypes. PMID:22511888

Differences in incidence rates and early detection of cancer among non-Hispanic and Hispanic Whites in the United States.

PubMed

Merrill, Ray M; Harris, Jessica D; Merrill, Joseph G

2013-01-01

Our study compared cancer incidence rates and stage distribution between non-Hispanic Whites and Hispanic Whites in the United States between 1992 and 2009. A retrospective cohort study was conducted for the years 1992 through 2009. Data represent 13 registries in the Surveillance, Epidemiology, and End Results Program, which reflect 14% of the total US population. The incidence rates for most cancer sites were significantly higher in non-Hispanic Whites than in Hispanic Whites. Exceptions included cancers of the stomach and liver and, for females only, kidney and renal pelvis and cervix uteri. Overall, cancer incidence in non-Hispanic Whites was 40% greater in males and 34% greater in females as compared with Hispanic Whites. Cancer sites with higher incidence rates among non-Hispanic Whites than Hispanic Whites in 2009 compared with 1992 were melanoma, thyroid cancer, oral cavity and pharynx cancer, lymphoma, urinary bladder cancer, and all cancers combined for males and melanoma, thyroid cancer, cervical cancer, and lung and bronchus cancer for females. However, difference in rates narrowed between the ethnicities for colon and rectal cancer and corpus and uterus cancer. Non-Hispanic Whites tended to have a higher percentage of early staged cancer, with little evidence that disparity between the ethnic groups was narrowing in terms of early detection. However, two exceptions involved liver cancer and thyroid cancer in females. The disparity appeared to widen for lung cancer in males. Cancer incidence rates are generally lower in Hispanic Whites than non-Hispanic Whites. The difference in rates between groups has widened over the study period for many cancer sites, with a few exceptions. Poorer screening practices among Hispanic Whites have tended to persist.

Searching for white dwarfs candidates in Sloan Digital Sky Survey Data

NASA Astrophysics Data System (ADS)

Należyty, Mirosław; Majczyna, Agnieszka; Ciechanowska, Anna; Madej, Jerzy

2009-06-01

Large amount of observational spectroscopic data are recently available from different observational projects, like Sloan Digital Sky Survey. It's become more urgent to identify white dwarfs stars based on data itself i.e. without modelling white dwarf atmospheres. In particular, existing methods of white dwarfs identification presented in Kleinman et al. (2004) and in Eisenstein et al. (2006) did not allow to find all the white dwarfs in examined data. We intend to test various criteria of searching for white dwarf candidates, based on photometric and spectral features.

White-black and white-Hispanic differences on fluid and crystallized abilities by age across the 11- to 94-year range.

PubMed

Kaufman, J C; McLean, J E; Kaufman, A S; Kaufman, N L

1994-12-01

Standardization data for the Kaufman Adolescent and Adult Intelligence Test (KAIT) were used to examine white-black and white-Hispanic differences on the Horn-Cattell crystallized and fluid constructs at several age groups across the broad 11- to 94-year span. Samples included 1,547 white, 241 black, and 140 Hispanic persons. Multivariate analyses with educational attainment covaried yielded only one significant finding: the white-black difference on the Crystallized Famous Faces subtest became smaller with increasing age.

White dwarf evolution - Cradle-to-grave constraints via pulsation

NASA Technical Reports Server (NTRS)

Kawaler, Steven D.

1990-01-01

White dwarf evolution, particularly in the early phases, is not very strongly constrained by observation. Fortunately, white dwarfs undergo nonradial pulsation in three distinct regions of the H-R diagram. These pulsations provide accurate masses, surface compositional structure and rotation velocities, and help constrain other important physical properties. We demonstrate the application of the tools of stellar seismology to white dwarf evolution using the hot white dwarf star PG 1159-035 and the cool DAV (or ZZ Ceti) stars as examples. From pulsation studies, significant challenges to the theory of white dwarf evolution emerge.

The white matter query language: a novel approach for describing human white matter anatomy

PubMed Central

Makris, Nikos; Rathi, Yogesh; Shenton, Martha; Kikinis, Ron; Kubicki, Marek; Westin, Carl-Fredrik

2016-01-01

We have developed a novel method to describe human white matter anatomy using an approach that is both intuitive and simple to use, and which automatically extracts white matter tracts from diffusion MRI volumes. Further, our method simplifies the quantification and statistical analysis of white matter tracts on large diffusion MRI databases. This work reflects the careful syntactical definition of major white matter fiber tracts in the human brain based on a neuroanatomist’s expert knowledge. The framework is based on a novel query language with a near-to-English textual syntax. This query language makes it possible to construct a dictionary of anatomical definitions that describe white matter tracts. The definitions include adjacent gray and white matter regions, and rules for spatial relations. This novel method makes it possible to automatically label white matter anatomy across subjects. After describing this method, we provide an example of its implementation where we encode anatomical knowledge in human white matter for ten association and 15 projection tracts per hemisphere, along with seven commissural tracts. Importantly, this novel method is comparable in accuracy to manual labeling. Finally, we present results applying this method to create a white matter atlas from 77 healthy subjects, and we use this atlas in a small proof-of-concept study to detect changes in association tracts that characterize schizophrenia. PMID:26754839

The white matter query language: a novel approach for describing human white matter anatomy.

PubMed

Wassermann, Demian; Makris, Nikos; Rathi, Yogesh; Shenton, Martha; Kikinis, Ron; Kubicki, Marek; Westin, Carl-Fredrik

2016-12-01

We have developed a novel method to describe human white matter anatomy using an approach that is both intuitive and simple to use, and which automatically extracts white matter tracts from diffusion MRI volumes. Further, our method simplifies the quantification and statistical analysis of white matter tracts on large diffusion MRI databases. This work reflects the careful syntactical definition of major white matter fiber tracts in the human brain based on a neuroanatomist's expert knowledge. The framework is based on a novel query language with a near-to-English textual syntax. This query language makes it possible to construct a dictionary of anatomical definitions that describe white matter tracts. The definitions include adjacent gray and white matter regions, and rules for spatial relations. This novel method makes it possible to automatically label white matter anatomy across subjects. After describing this method, we provide an example of its implementation where we encode anatomical knowledge in human white matter for ten association and 15 projection tracts per hemisphere, along with seven commissural tracts. Importantly, this novel method is comparable in accuracy to manual labeling. Finally, we present results applying this method to create a white matter atlas from 77 healthy subjects, and we use this atlas in a small proof-of-concept study to detect changes in association tracts that characterize schizophrenia.

White Dots as a Novel Marker of Diabetic Retinopathy Severity in Ultrawide Field Imaging.

PubMed

Dodo, Yoko; Murakami, Tomoaki; Unoki, Noriyuki; Ogino, Ken; Uji, Akihito; Yoshitake, Shin; Yoshimura, Nagahisa

2016-01-01

To characterize white dots in diabetic retinopathy (DR) and their association with disease severity using ultra-wide-field scanning laser ophthalmoscopy. We randomly selected 125 eyes of 77 patients (25 eyes from individual categories of the international classification of DR severity) for which ultrawide field photographs were obtained. We characterized white dots, which were delineated by higher signal levels on green but not red laser images, and evaluated the relationship between the number of white dots and the international severity scale of DR. Most white dots were located in nonperfused areas, and the number of total white dots was significantly correlated to that of dots in nonperfused areas. White dots corresponded to microaneurysms around the boundary between nonperfused areas and perfused areas or unknown lesions in nonperfused areas. Eyes with DR had significantly more white dots than those with no apparent retinopathy. The numbers of white dots in moderate nonproliferative diabetic retinopathy (NPDR) or more severe grades were significantly higher than in mild NPDR. The area under the receiver operating characteristics curve (AROC) analyses demonstrated that the number of white dots had the significance in the diagnosis of DR (0.908-0.986) and moderate NPDR or more severe grades (0.888-0.974). These data suggest the clinical relevance of white dots seen on ultrawide field images in the diagnosis of the severity of DR.

Accelerated White Matter Aging in Schizophrenia: Role of White Matter Blood Perfusion

PubMed Central

Chiappelli, Joshua; McMahon, Robert; Muellerklein, Florian; Wijtenburg, S. Andrea; White, Michael G.; Rowland, Laura M.; Hong, L. Elliot

2014-01-01

Elevated rate of age-related decline in white matter integrity, indexed by fractional anisotropy (FA) from diffusion tensor imaging, was reported in patients with schizophrenia. Its etiology is unknown. We hypothesized that a decline of blood perfusion to the white matter may underlie the accelerated age-related reduction in FA in schizophrenia. Resting white matter perfusion and FA were collected using pseudo-continuous arterial spin labeling and high-angular-resolution diffusion tensor imaging, respectively, in 50 schizophrenia patients and 70 controls (age=18-63 years). Main outcome measures were the diagnosis-by-age interaction on whole-brain white matter perfusion, and FA. Significant age-related decline in brain white matter perfusion and FA were present in both groups. Age-by-diagnosis interaction was significant for FA (p<0.001) but not white matter perfusion. Age-by-diagnosis interaction for FA values remained significant even after accounting for age-related decline in perfusion. Therefore, we replicated the finding of an increased rate of age-related white matter FA decline in schizophrenia, and observed a significant age-related decline in white matter blood perfusion, although the latter did not contribute to the accelerated age-related decline in FA. The results suggest that factors other than reduced perfusion account for the accelerated age-related decline in white matter integrity in schizophrenia. PMID:24680326

Where to Focus Efforts to Reduce the Black-White Disparity In Stroke Mortality: Incidence vs. Case-Fatality?

PubMed Central

Howard, George; Moy, Claudia S.; Howard, Virginia J.; McClure, Leslie A.; Kleindorfer, Dawn O.; Kissela, Brett M.; Judd, Suzanne E.; Unverzagt, Fredrick W.; Soliman, Elsayed Z.; Safford, Monika M.; Cushman, Mary; Flaherty, Matthew L.; Wadley, Virginia G.

2016-01-01

Background and Purpose At age 45, Blacks have a stroke mortality approximately 3-times greater than their White counterparts, with a declining disparity at older ages. We assess whether this Black-White disparity in stroke mortality is attributable to a Black-White disparity in stroke incidence versus a disparity in case-fatality. Methods We first assess if Black-White differences in stroke mortality within 29,681 participants in the REasons for Geographic And Racial Differences in Stroke (REGARDS) cohort reflect national Black-White differences in stroke mortality, and then assess the degree to which Black-White differences in stroke incidence or 30-day case-fatality after stroke contribute to the disparities in stroke mortality. Results The pattern of stroke mortality within the study mirrors the national pattern, with the Black-to-White hazard ratio of approximately 4.0 at age 45 decreasing to approximately 1.0 at age 85. The pattern of Black-to-White disparities in stroke incidence shows a similar pattern, but no evidence of a corresponding disparity in stroke case-fatality. Discussion These findings show that the Black-White differences in stroke mortality are largely driven by differences in stroke incidence, with case fatality playing at most a minor role. Therefore to reduce the Black-White disparity in stroke mortality, interventions need to focus on prevention of stroke in Blacks. PMID:27256672

Efficient and Stable CsPb(Br/I)3@Anthracene Composites for White Light-Emitting Devices.

PubMed

Shen, Xinyu; Sun, Chun; Bai, Xue; Zhang, Xiaoyu; Wang, Yu; Wang, Yiding; Song, Hongwei; Yu, William W

2018-05-16

Inorganic perovskite quantum dots bear many unique properties that make them potential candidates for optoelectronic applications, including color display and lighting. However, the white emission with inorganic perovskite quantum dots has rarely been realized due to the anion-exchange reaction. Here, we proposed a one-pot preparation to fabricate inorganic perovskite quantum dot-based white light-emitting composites by introducing anthracene as a blue emission component. The as-prepared white light-emitting composite exhibited a photoluminescence quantum yield of 41.9%. By combining CsPb(Br/I) 3 @anthracene composites with UV light-emitting device (LED) chips, white light-emitting devices with a color rendering index of 90 were realized with tunable color temperature from warm white to cool white. These results can promote the application of inorganic perovskite quantum dots in the field of white LEDs.

Is love colorblind? Political orientation and interracial romantic desire.

PubMed

Eastwick, Paul W; Richeson, Jennifer A; Son, Deborah; Finkel, Eli J

2009-09-01

The present research examined the association of political orientation with ingroup favoritism in two live romantic contexts. In Study 1, White participants had sequential interactions with both a White and Black confederate and reported their romantic desire for each. In Study 2, both White and Black participants speed-dated multiple potential romantic partners and reported whether they would be interested in meeting each speed-dating partner again. In both studies, White participants' political conservatism positively predicted the strength of the ingroup-favoring bias: White conservatives were less likely than White liberals to desire Black (interracial) relative to White potential romantic partners. In contrast, Black participants' political conservatism negatively predicted the strength of the ingroup-favoring bias: Consistent with system-justification theory, Black conservatives were more likely than Black liberals to desire White (interracial) relative to Black potential romantic partners. Political orientation may be a key factor that influences the initiation of interracial romantic relationships.

THE IMPACT OF LOCAL BLACK RESIDENTS’ SOCIOECONOMIC STATUS ON WHITE RESIDENTS’ RACIAL VIEWS

PubMed Central

Taylor, Marylee C.; Reyes, Adriana M.

2014-01-01

This paper extends the study of contextual influences on racial attitudes by asking how the SES of the local black community shapes the racial attitudes of local whites. Using responses to the 1998–2002 General Social Surveys merged with year 2000 census data, we compare the influences of black educational and economic composition on white residents’ attitudes. Finally, the independence of these effects from the impact of white contextual SES is assessed. Across three dimensions of racial attitudes, white residents’ views are more positive in localities where the black population contains more college graduates. However, such localities tend also to have highly educated white populations, as well as higher incomes among blacks and whites, and the multiple influences are inseparable. In contrast, many racial attitude measures show an independent effect of black economic composition, white residents reporting more negative views where the local African American community is poorer. PMID:24267750

White constancy method for mobile displays

NASA Astrophysics Data System (ADS)

Yum, Ji Young; Park, Hyun Hee; Jang, Seul Ki; Lee, Jae Hyang; Kim, Jong Ho; Yi, Ji Young; Lee, Min Woo

2014-03-01

In these days, consumer's needs for image quality of mobile devices are increasing as smartphone is widely used. For example, colors may be perceived differently when displayed contents under different illuminants. Displayed white in incandescent lamp is perceived as bluish, while same content in LED light is perceived as yellowish. When changed in perceived white under illuminant environment, image quality would be degraded. Objective of the proposed white constancy method is restricted to maintain consistent output colors regardless of the illuminants utilized. Human visual experiments are performed to analyze viewers'perceptual constancy. Participants are asked to choose the displayed white in a variety of illuminants. Relationship between the illuminants and the selected colors with white are modeled by mapping function based on the results of human visual experiments. White constancy values for image control are determined on the predesigned functions. Experimental results indicate that propsed method yields better image quality by keeping the display white.

Clearing of suspensions of Micrococcus lysodeikticus catalysed by lysozymes from hen, goose, and turkey egg whites, human milk, and phage T4. Assessment of potential as signal generators for homogeneous enzyme immunoassays for urinary steroids.

PubMed

Cooke, Delwyn G; Blackwell, Leonard F

2007-01-01

Lysozymes (3.2.1.17) from goose (Anser anser) egg white, turkey (Melagris gallopavo) egg white, phage T4 and human milk were compared with hen egg white lysozyme in their ability to clear a suspension of Micrococcus lysodeikticus. All of the lysozymes, except hen egg white lysozyme, catalysed the clearing of the Micrococcus lysodeikticus suspension in a biphasic fashion. Compared to hen egg white lysozyme, the total absorbance or transmission change over 5 and 20 minutes was less in all cases, except for human lysozyme. Human lysozyme was, therefore, a potential alternative, more rapid signal generator for the measurement of urinary estrone glucuronide excretion rates because of its structural similarity to hen egg white lysozyme. The apparent K(M) values for hen egg white lysozyme increased with the enzyme concentration.

Canadian Mock Juror Attitudes and Decisions in Domestic Violence Cases Involving Asian and White Interracial and Intraracial Couples

ERIC Educational Resources Information Center

Maeder, Evelyn M.; Mossiere, Annik; Cheung, Liann

2013-01-01

This study manipulated the race of the defendant and the victim (White/White, White/Asian, Asian/Asian, and Asian/White) in a domestic violence case to examine the potential prejudicial impact of race on juror decision making. A total of 181undergraduate students read a trial transcript involving an allegation of spousal abuse in which defendant…

"What Is Critical Whiteness Doing in Our Nice Field Like Critical Race Theory?" Applying CRT and CWS to Understand the White Imaginations of White Teacher Candidates

ERIC Educational Resources Information Center

Matias, Cheryl E.; Viesca, Kara Mitchell; Garrison-Wade, Dorothy F.; Tandon, Madhavi; Galindo, Rene

2014-01-01

Critical Race Theory (CRT) revolutionized how we investigate race in education. Centralizing counter-stories from people of color becomes essential for decentralizing white normative discourse--a process we refer to as realities within the Black imagination. Yet, few studies examine how whites respond to centering the Black imagination, especially…

Children's Perception of Black and White Boxes and Bobo Dolls as a Reflection of How They Regard Their Own and Other's Racial Membership.

ERIC Educational Resources Information Center

Stabler, John R.; Johnson, Edward E.

Investigation of how children's responses to black and white objects reflect racial concepts is reported. One series of experiments asking Headstart children to guess which objects they liked or disliked were hidden in black or white boxes. Although white children guessed more often that positively evaluated objects were in white boxes, black…

White sturgeon mitigation and restoration in the Columbia and Snake rivers upstream from Bonneville Dam, Annual progress report April 2002 - March 2003. Report C

USGS Publications Warehouse

Gadomski, D.M.; Parsley, M.J.; Kofoot, P.

2004-01-01

During 1 April 2002 through 31 March 2003, the U.S. Geological Survey (USGS) continued work on several tasks, including quantifying habitat suitable for white sturgeon Acipenser transmontanus spawning, a long-term survey of young-of-the-year (YOY) white sturgeon recruitment in the lower Columbia River, and a laboratory study investigating predation on larval and juvenile white sturgeon. River discharge and water temperatures that occurred during April through July 2002 provided relatively good conditions for spawning by white sturgeon downstream from Bonneville, The Dalles, John Day, and McNary dams. Optimal spawning temperatures in the four tailraces occurred for approximately three weeks and during a period of relatively high river discharge. Our monthly estimates of the index of spawning habitat showed that the availability of habitat for spawning peaked in June at levels higher than the average of past years. However, indices for the month of May were less than average in all four tailraces. YOY white sturgeon were collected during bottom trawling in Bonneville and The Dalles reservoirs, but none were captured in the John Day Reservoir. In an ongoing comparison of indices of abundance derived from bottom trawls and gill nets, the Oregon Department of Fish and Wildlife also caught YOY white sturgeon in gill nets set in The Dalles Reservoir, but none in the John Day Reservoir. The third year of a three-year laboratory predation study was completed. Adult channel catfish ingested white sturgeon up to a mean total length of about 120 mm, and juvenile walleye ate white sturgeon up to a mean length of 53 mm. When white sturgeon and coho salmon were both available as prey, northern pikeminnow continued to ingest white sturgeon, but in most cases preferred salmon. Conversely, prickly sculpins preferred white sturgeon over goldfish as prey. The presence of cover and also lower light levels reduced predation by sculpins on white sturgeon larvae, but cover did not reduce predation on white sturgeon juveniles. Similar to the past two years, turbidity affected predation of white sturgeon larvae by prickly sculpins, with less sturgeon ingested at higher turbidities.

Allelic Heterogeneity at the Equine KIT Locus in Dominant White (W) Horses

PubMed Central

Haase, Bianca; Brooks, Samantha A; Schlumbaum, Angela; Azor, Pedro J; Bailey, Ernest; Alaeddine, Ferial; Mevissen, Meike; Burger, Dominik; Poncet, Pierre-André; Rieder, Stefan; Leeb, Tosso

2007-01-01

White coat color has been a highly valued trait in horses for at least 2,000 years. Dominant white (W) is one of several known depigmentation phenotypes in horses. It shows considerable phenotypic variation, ranging from ∼50% depigmented areas up to a completely white coat. In the horse, the four depigmentation phenotypes roan, sabino, tobiano, and dominant white were independently mapped to a chromosomal region on ECA 3 harboring the KIT gene. KIT plays an important role in melanoblast survival during embryonic development. We determined the sequence and genomic organization of the ∼82 kb equine KIT gene. A mutation analysis of all 21 KIT exons in white Franches-Montagnes Horses revealed a nonsense mutation in exon 15 (c.2151C>G, p.Y717X). We analyzed the KIT exons in horses characterized as dominant white from other populations and found three additional candidate causative mutations. Three almost completely white Arabians carried a different nonsense mutation in exon 4 (c.706A>T, p.K236X). Six Camarillo White Horses had a missense mutation in exon 12 (c.1805C>T, p.A602V), and five white Thoroughbreds had yet another missense mutation in exon 13 (c.1960G>A, p.G654R). Our results indicate that the dominant white color in Franches-Montagnes Horses is caused by a nonsense mutation in the KIT gene and that multiple independent mutations within this gene appear to be responsible for dominant white in several other modern horse populations. PMID:17997609

Hispanic-White Differences in Lifespan Variability in the United States

PubMed Central

Lariscy, Joseph T.; Nau, Claudia; Firebaugh, Glenn; Hummer, Robert A.

2016-01-01

This study is the first to investigate whether and, if so, why Hispanics and non-Hispanic whites in the United States differ in the variability of their lifespans. Although Hispanics enjoy higher life expectancy than whites, very little is known about how lifespan variability—and thus uncertainty about length of life—differs by race/ethnicity. We use 2010 U.S. National Vital Statistics System data to calculate lifespan variance at ages 10 and older for Hispanics and whites, and then decompose the Hispanic-white variance difference into cause-specific spread, allocation, and timing effects. In addition to their higher life expectancy relative to whites, Hispanics also exhibit 7 % lower lifespan variability, with a larger gap among women than men. Differences in cause-specific incidence (allocation effects) explain nearly two-thirds of Hispanics’ lower lifespan variability, mainly because of the higher mortality from suicide, accidental poisoning, and lung cancer among whites. Most of the remaining Hispanic-white variance difference is due to greater age dispersion (spread effects) in mortality from heart disease and residual causes among whites than Hispanics. Thus, the Hispanic paradox—that a socioeconomically disadvantaged population (Hispanics) enjoys a mortality advantage over a socioeconomically advantaged population (whites)—pertains to lifespan variability as well as to life expectancy. Efforts to reduce U.S. lifespan variability and simultaneously increase life expectancy, especially for whites, should target premature, young adult causes of death—in particular, suicide, accidental poisoning, and homicide. We conclude by discussing how the analysis of Hispanic-white differences in lifespan variability contributes to our understanding of the Hispanic paradox. PMID:26682740

Racial residential segregation, socioeconomic disparities, and the White-Black survival gap.

PubMed

Popescu, Ioana; Duffy, Erin; Mendelsohn, Joshua; Escarce, José J

2018-01-01

To evaluate the association between racial residential segregation, a prominent manifestation of systemic racism, and the White-Black survival gap in a contemporary cohort of adults, and to assess the extent to which socioeconomic inequality explains this association. This was a cross sectional study of White and Black men and women aged 35-75 living in 102 large US Core Based Statistical Areas. The main outcome was the White-Black survival gap. We used 2009-2013 CDC mortality data for Black and White men and women to calculate age-, sex- and race adjusted White and Black mortality rates. We measured segregation using the Dissimilarity index, obtained from the Manhattan Institute. We used the 2009-2013 American Community Survey to define indicators of socioeconomic inequality. We estimated the CBSA-level White-Black gap in probability of survival using sequential linear regression models accounting for the CBSA dissimilarity index and race-specific socioeconomic indicators. Black men and women had a 14% and 9% lower probability of survival from age 35 to 75 than their white counterparts. Residential segregation was strongly associated with the survival gap, and this relationship was partly, but not fully, explained by socioeconomic inequality. At the lowest observed level of segregation, and with the Black socioeconomic status (SES) assumed to be at the White SES level scenario, the survival gap is essentially eliminated. White-Black differences in survival remain wide notwithstanding public health efforts to improve life expectancy and initiatives to reduce health disparities. Eliminating racial residential segregation and bringing Black socioeconomic status (SES) to White SES levels would eliminate the White-Black survival gap.

Laboratory studies on the vulnerability of young white sturgeon to predation

USGS Publications Warehouse

Gadomski, D.M.; Parsley, M.J.

2005-01-01

Despite evidence of annual spawning by white sturgeon Acipenser transmontanus in rivers of the northwestern United States and Canada, in some years and locations little or no recruitment of age-0 white sturgeon has been observed. We examined the vulnerability of white sturgeon larvae and juveniles to predation to further understand possible causes of mortality. We were particularly interested in the vulnerability of older larvae and juveniles because at about 25 mm total length (TL) white sturgeon develop sharp dorsal and lateral scutes that may act as a morphological defense. In the laboratory, white sturgeon ranging from newly hatched larvae to about 170-mm TL juveniles were exposed to predatory fishes they might encounter in the natural environment. We found that channel catfish Ictalurus punctatus (mean TL = 464 mm) and northern pikeminnow Ptychocheilus oregonensis (mean TL = 472 mm) ate white sturgeon up to mean sizes of 121 and 134 mm TL, respectively. Conversely, similarly sized walleyes Sander vitreus ingested almost no white sturgeon, although juvenile walleyes (mean TL = 184 mm) ate white sturgeon up to 59 mm TL. The smallest predator we tested, prickly sculpins Cottus asper (mean TL = 126 mm), ate white sturgeon up to a mean TL of 50 mm. Our study demonstrated that predation is a likely cause of mortality of age-0 white sturgeon and may be contributing to the year-class failures that have been observed. In addition, the results from this study could be used to reduce the predation risk of artificially propagated white sturgeon released to augment declining populations since fish could be reared to sizes where their vulnerability is low.

White fear, dehumanization, and low empathy: Lethal combinations for shooting biases.

PubMed

Mekawi, Yara; Bresin, Konrad; Hunter, Carla D

2016-07-01

A growing number of studies have documented the existence racial shooting biases against Black versus White targets (Correll et al., 2002). Little is known about individual differences that may moderate these biases. The goals of this study were to examine (a) whether White participants' fear of racial/ethnic minorities is associated with racial shooting biases, and (b) whether dehumanization and empathy moderate this effect. Participants (N = 290) completed a dehumanization implicit association test and simulated shooting task, then reported their fear of racial minorities (i.e., White fear) and empathic ability. We found that (a) individuals high in White fear showed a shooting bias, such that they had a lower threshold for shooting Black relative to White and East Asian targets, (b) Dehumanization moderated the White fear and shooting bias relation, such that individuals high in White fear and high in dehumanization had a significantly more liberal shooting threshold for Black versus White targets, and (c) Empathy moderated the White fear and shooting bias relation, such that people who were high in White fear and low in empathic ability had a more liberal shooting threshold for Black versus White targets. In sum, fearing racial/ethnic minorities can have devastating shooting bias outcomes for Black individuals, but this effect is stronger when people also dehumanize Black individuals, and weaker when people have high empathy. These findings contribute to the literature by identifying theory driven moderators that identify both risk and protective factors in predicting racial shooting biases. (PsycINFO Database Record (c) 2016 APA, all rights reserved).

Bio-inspired, large scale, highly-scattering films for nanoparticle-alternative white surfaces

PubMed Central

Syurik, Julia; Siddique, Radwanul Hasan; Dollmann, Antje; Gomard, Guillaume; Schneider, Marc; Worgull, Matthias; Wiegand, Gabriele; Hölscher, Hendrik

2017-01-01

Inspired by the white beetle of the genus Cyphochilus, we fabricate ultra-thin, porous PMMA films by foaming with CO2 saturation. Optimising pore diameter and fraction in terms of broad-band reflectance results in very thin films with exceptional whiteness. Already films with 60 µm-thick scattering layer feature a whiteness with a reflectance of 90%. Even 9 µm thin scattering layers appear white with a reflectance above 57%. The transport mean free path in the artificial films is between 3.5 µm and 4 µm being close to the evolutionary optimised natural prototype. The bio-inspired white films do not lose their whiteness during further shaping, allowing for various applications. PMID:28429805

Bio-inspired, large scale, highly-scattering films for nanoparticle-alternative white surfaces

NASA Astrophysics Data System (ADS)

Syurik, Julia; Siddique, Radwanul Hasan; Dollmann, Antje; Gomard, Guillaume; Schneider, Marc; Worgull, Matthias; Wiegand, Gabriele; Hölscher, Hendrik

2017-04-01

Inspired by the white beetle of the genus Cyphochilus, we fabricate ultra-thin, porous PMMA films by foaming with CO2 saturation. Optimising pore diameter and fraction in terms of broad-band reflectance results in very thin films with exceptional whiteness. Already films with 60 µm-thick scattering layer feature a whiteness with a reflectance of 90%. Even 9 µm thin scattering layers appear white with a reflectance above 57%. The transport mean free path in the artificial films is between 3.5 µm and 4 µm being close to the evolutionary optimised natural prototype. The bio-inspired white films do not lose their whiteness during further shaping, allowing for various applications.

50 CFR 10.13 - List of Migratory Birds.

Code of Federal Regulations, 2014 CFR

2014-10-01

..., Oreomystis mana CROSSBILL, Red, Loxia curvirostra White-winged, Loxia leucoptera CROW, American, Corvus... caurinus Tamaulipas, Corvus imparatus White-necked, Corvus leucognaphalus CUCKOO, Black-billed, Coccyzus... DOVE, Inca, Columbina inca Mourning, Zenaida macroura White-tipped, Leptotila verreauxi White-winged...

White on whiteness: becoming radicalized about race.

PubMed

Gustafson, Diana L

2007-06-01

Race difference and whiteness--key elements in the construction of my cultural identity - became a focus of my reflective practice that began over 5 years ago. This article reflects critically on the production of white identity from my social location as a white nurse. My attention focused on two aspects of whiteness: the social location from which I live and learn, and the hegemonic but unmarked discourse that informs the knowledge I read and create as a researcher. My white identity is characterized by four features: the absent presence of whiteness; the need for an oppositional identity; the entitlement of choice and subjectivity; and the denial of a dominant position and relation to the racialized Other. Exploring these features is critically important at this juncture in global and professional history because of the persistence of neoliberalism and the popularity of culturalist approaches to diversity. Examining the process of my radicalization about race simultaneously calls attention to the historiography of ideas about whiteness and race difference and the institutionalization of beliefs and practices about race difference that continuously reproduce racialized identities and inform collective nursing practice and research.

Lighting theory and luminous characteristics of white light-emitting diodes

NASA Astrophysics Data System (ADS)

Uchida, Yuji; Taguchi, Tsunemasa

2005-12-01

A near-ultraviolet (UV)-based white light-emitting diode (LED) lighting system linked with a semiconductor InGaN LED and compound phosphors for general lighting applications is proposed. We have developed for the first time a novel type of high-color rendering index (Ra) white LED light source, which is composed of near-UV LED and multiphosphor materials showing orange (O), yellow (Y), green (G), and blue (B) emissions. The white LED shows the superior characteristics of luminous efficacy and high Ra to be about 40 lm/W and 93, respectively. Luminous and chromaticity characteristics, and their spectral distribution of the present white LED can be evaluated using the multipoint LED light source theory. It is revealed that the OYGB white LED can provide better irradiance properties than that of conventional white LEDs. Near-UV white LED technologies, in conjunction with phosphor blends, can offer superior color uniformity, high Ra, and excellent light quality. Consequently we are carrying out a "white LEDs for medical applications" program in the second phase of this national project from 2004 to 2009.

On describing human white matter anatomy: the white matter query language.

PubMed

Wassermann, Demian; Makris, Nikos; Rathi, Yogesh; Shenton, Martha; Kikinis, Ron; Kubicki, Marek; Westin, Carl-Fredrik

2013-01-01

The main contribution of this work is the careful syntactical definition of major white matter tracts in the human brain based on a neuroanatomist's expert knowledge. We present a technique to formally describe white matter tracts and to automatically extract them from diffusion MRI data. The framework is based on a novel query language with a near-to-English textual syntax. This query language allows us to construct a dictionary of anatomical definitions describing white matter tracts. The definitions include adjacent gray and white matter regions, and rules for spatial relations. This enables automated coherent labeling of white matter anatomy across subjects. We use our method to encode anatomical knowledge in human white matter describing 10 association and 8 projection tracts per hemisphere and 7 commissural tracts. The technique is shown to be comparable in accuracy to manual labeling. We present results applying this framework to create a white matter atlas from 77 healthy subjects, and we use this atlas in a proof-of-concept study to detect tract changes specific to schizophrenia.

A review of tooth colour and whiteness.

PubMed

Joiner, Andrew; Hopkinson, Ian; Deng, Yan; Westland, Stephen

2008-01-01

To review current knowledge on the definition of tooth whiteness and its application within dentistry, together with the measured range of tooth colours. 'Medline' and 'ISI Web of Sciences' databases were searched electronically with key words tooth, teeth, colour, colour, white and whiteness. The application of colour science within dentistry has permitted the measurement of tooth colour in an objective way, with the most common colour space in current use being the CIELAB (Commission Internationale de l'Eclairage). Indeed, many investigators from a range of different countries have reported L*, a* and b* values for teeth measured in vivo using instrumental techniques such as spectrophotometers, colorimeters and image analysis of digital images. In general, these studies show a large range in L*, a* and b* values, but consistently show that there is a significant contribution of b* value or yellowness in natural tooth colour. Further developments in colour science have lead to the description of tooth whiteness and changes in tooth whiteness based on whiteness indices, with the most relevant and applicable being the WIO whiteness index, a modified version of the CIE whiteness index.

Anadromous alewives, Alosa pseudoharengus, as prey for white perch, Morone americana

USGS Publications Warehouse

Moring, J.R.; Mink, L.H.

2002-01-01

The reintroduction of anadromous alewives, Alosa pseudoharengus, to their historic habitats in the inland waters of the United States and Canada, has prompted concerns about possible interactions with a popular sport fish, white perch, Morone americana. Both species are now widely distributed in northeastern North America. Diets of white perch in Lake George, Maine, U.S.A., where alewives were absent, were monitored and compared with those of white perch populations that were sympatric with anadromous alewives in two coastal Maine lakes, Biscay Pond and North Pond. In the presence of introduced alewives, the diet of adult white perch became almost exclusively juvenile alewives by late summer in ponds where both species were present. White perch that were sympatric with alewives were more piscivorus than were Lake George white perch, which primarily consumed Cladocera. Not only were alewives the principal prey item in the diet of white perch in Biscay and North ponds, but adult alewives were largely cannibalistic by August. Thus, success of reintroducing anadromous alewives in waters containing white perch may be negatively impacted by predation as well as cannibalism.

White Matter Injury and Recovery after Hypertensive Intracerebral Hemorrhage

PubMed Central

Zuo, Shilun; Pan, Pengyu; Li, Qiang

2017-01-01

Hypertensive intracerebral hemorrhage (ICH) could very probably trigger white matter injury in patients. Through the continuous study of white matter injury after hypertensive ICH, we achieve a more profound understanding of the pathophysiological mechanism of its occurrence and development. At the same time, we found a series of drugs and treatment methods for the white matter repair. In the current reality, the research paradigm of white matter injury after hypertensive ICH is relatively obsolete or incomplete, and there are still lots of deficiencies in the research. In the face of the profound changes of stroke research perspective, we believe that the combination of the lenticulostriate artery, nerve nuclei of the hypothalamus-thalamus-basal ganglia, and the white matter fibers located within the capsula interna will be beneficial to the research of white matter injury and repair. This paper has classified and analyzed the study of white matter injury and repair after hypertensive ICH and also rethought the shortcomings of the current research. We hope that it could help researchers further explore and study white matter injury and repair after hypertensive ICH. PMID:28680884

The role of socioeconomic factors in Black-White disparities in preterm birth.

PubMed

Braveman, Paula A; Heck, Katherine; Egerter, Susan; Marchi, Kristen S; Dominguez, Tyan Parker; Cubbin, Catherine; Fingar, Kathryn; Pearson, Jay A; Curtis, Michael

2015-04-01

We investigated the role of socioeconomic factors in Black-White disparities in preterm birth (PTB). We used the population-based California Maternal and Infant Health Assessment survey and birth certificate data on 10 400 US-born Black and White California residents who gave birth during 2003 to 2010 to examine rates and relative likelihoods of PTB among Black versus White women, with adjustment for multiple socioeconomic factors and covariables. Greater socioeconomic advantage was generally associated with lower PTB rates among White but not Black women. There were no significant Black-White disparities within the most socioeconomically disadvantaged subgroups; Black-White disparities were seen only within more advantaged subgroups. Socioeconomic factors play an important but complex role in PTB disparities. The absence of Black-White disparities in PTB within certain socioeconomic subgroups, alongside substantial disparities within others, suggests that social factors moderate the disparity. Further research should explore social factors suggested by the literature-including life course socioeconomic experiences and racism-related stress, and the biological pathways through which they operate-as potential contributors to PTB among Black and White women with different levels of social advantage.

White matter involvement in sporadic Creutzfeldt-Jakob disease

PubMed Central

Mandelli, Maria Luisa; DeArmond, Stephen J.; Hess, Christopher P.; Vitali, Paolo; Papinutto, Nico; Oehler, Abby; Miller, Bruce L.; Lobach, Irina V.; Bastianello, Stefano; Geschwind, Michael D.; Henry, Roland G.

2014-01-01

Sporadic Creutzfeldt-Jakob disease is considered primarily a disease of grey matter, although the extent of white matter involvement has not been well described. We used diffusion tensor imaging to study the white matter in sporadic Creutzfeldt-Jakob disease compared to healthy control subjects and to correlated magnetic resonance imaging findings with histopathology. Twenty-six patients with sporadic Creutzfeldt-Jakob disease and nine age- and gender-matched healthy control subjects underwent volumetric T1-weighted and diffusion tensor imaging. Six patients had post-mortem brain analysis available for assessment of neuropathological findings associated with prion disease. Parcellation of the subcortical white matter was performed on 3D T1-weighted volumes using Freesurfer. Diffusion tensor imaging maps were calculated and transformed to the 3D-T1 space; the average value for each diffusion metric was calculated in the total white matter and in regional volumes of interest. Tract-based spatial statistics analysis was also performed to investigate the deeper white matter tracts. There was a significant reduction of mean (P = 0.002), axial (P = 0.0003) and radial (P = 0.0134) diffusivities in the total white matter in sporadic Creutzfeldt-Jakob disease. Mean diffusivity was significantly lower in most white matter volumes of interest (P < 0.05, corrected for multiple comparisons), with a generally symmetric pattern of involvement in sporadic Creutzfeldt-Jakob disease. Mean diffusivity reduction reflected concomitant decrease of both axial and radial diffusivity, without appreciable changes in white matter anisotropy. Tract-based spatial statistics analysis showed significant reductions of mean diffusivity within the white matter of patients with sporadic Creutzfeldt-Jakob disease, mainly in the left hemisphere, with a strong trend (P = 0.06) towards reduced mean diffusivity in most of the white matter bilaterally. In contrast, by visual assessment there was no white matter abnormality either on T2-weighted or diffusion-weighted images. Widespread reduction in white matter mean diffusivity, however, was apparent visibly on the quantitative attenuation coefficient maps compared to healthy control subjects. Neuropathological analysis showed diffuse astrocytic gliosis and activated microglia in the white matter, rare prion deposition and subtle subcortical microvacuolization, and patchy foci of demyelination with no evident white matter axonal degeneration. Decreased mean diffusivity on attenuation coefficient maps might be associated with astrocytic gliosis. We show for the first time significant global reduced mean diffusivity within the white matter in sporadic Creutzfeldt-Jakob disease, suggesting possible primary involvement of the white matter, rather than changes secondary to neuronal degeneration/loss. PMID:25367029

Effect of Calcium Cyanamide on the Growth of Planted Hardwoods

Treesearch

Felix Jr. Ponder; Calvin F. Bey

1981-01-01

Calcium cyanamide, a nitrogenous fertilizer, was evaluated in new plantings of black walnut, white ash, and white oak seedlings and 2- and 3-year-old white oak and white ash trees, respectively. Only the growth of black walnut seedlings and white ash trees was improved by CaCN2. Some weeds were controlled by CaCN2, but the amount of weed control was not significantly...

Age, size and regeneration of old growth white pine at Dividing Lake Nature Reserve, Algonquin Park, Ontario

Treesearch

Richard P. Guyette; Daniel C. Dey

1995-01-01

The age, mode of regeneration and diameter growth of white pine were determined in an old growth stand near Dividing Lake, Algonquin Provincial Park. The white pine ranged in age from 267 to 486 years. There was no significant relationship between white pine age and diameter (DBH). The distribution of tree ages indicated that the white pine component in this mixed...

Is that Your Mom? A Qualitative Investigation of White Mothers of Non-White Children in the United States and in New Zealand

ERIC Educational Resources Information Center

Robinson-Wood, Tracy Lynn

2010-01-01

Twenty-eight biological and adoptive White mothers of non-White children were interviewed in New Zealand and in the United States. Through a thematic analysis of transcribed interviews and interview notes, 7 primary themes emerged (a) looking like a family means looking alike and looking White, (b) mothering as vulnerability, (c) teen girls'…

First report of the white pine blister rust pathogen, Cronartium ribicola, in Arizona

Treesearch

M. L. Fairweather; Brian Geils

2011-01-01

White pine blister rust, caused by Cronartium ribicola J.C. Fisch., was found on southwestern white pine (Pinus flexilis James var. reflexa Engelm., synonym P. strobiformis Engelm.) near Hawley Lake, Arizona (Apache County, White Mountains, 34.024°N, 109.776°W, elevation 2,357 m) in April 2009. Although white pines in the Southwest (Arizona and New Mexico) have been...

Religious Beliefs Against Smoking Among Black and White Urban Youth.

PubMed

Alexander, Adam C; Robinson, Leslie A; Ward, Kenneth D; Farrell, Amy S; Ferkin, Adam C

2016-12-01

This study explores the relation of religiosity to cigarette smoking in a sample of 4776 Black versus White adolescents. Findings show that Black adolescents have significantly stronger religious beliefs against smoking than do White students. Further, teens with strong or very strong religious beliefs are less likely to have smoked. The protective effect of religious beliefs against smoking was stronger for Whites than for Blacks. These findings suggest that efforts in the Black religious community to prevent cigarette smoking have been somewhat successful. Similar efforts in the White community might help stem the tide of tobacco use among White teens.

White Matter Injury in Ischemic Stroke

PubMed Central

Wang, Yuan; Liu, Gang; Hong, Dandan; Chen, Fenghua; Ji, Xunming; Cao, Guodong

2017-01-01

Stroke is one of the major causes of disability and mortality worldwide. It is well known that ischemic stroke can cause gray matter injury. However, stroke also elicits profound white matter injury, a risk factor for higher stroke incidence and poor neurological outcomes. The majority of damage caused by stroke is located in subcortical regions and, remarkably, white matter occupies nearly half of the average infarct volume. Indeed, white matter is exquisitely vulnerable to ischemia and is often injured more severely than gray matter. Clinical symptoms related to white matter injury include cognitive dysfunction, emotional disorders, sensorimotor impairments, as well as urinary incontinence and pain, all of which are closely associated with destruction and remodeling of white matter connectivity. White matter injury can be noninvasively detected by MRI, which provides a three-dimensional assessment of its morphology, metabolism, and function. There is an urgent need for novel white matter therapies, as currently available strategies are limited to preclinical animal studies. Optimal protection against ischemic stroke will need to encompass the fortification of both gray and white matter. In this review, we discuss white matter injury after ischemic stroke, focusing on clinical features and tools, such as imaging, manifestation, and potential treatments. We also briefly discuss the pathophysiology of WMI and future research directions. PMID:27090751

Dissecting the Complexities of the Relationship Between Police Officer-Civilian Race/Ethnicity Dyads and Less-Than-Lethal Use of Force.

PubMed

Jetelina, Katelyn K; Jennings, Wesley G; Bishopp, Stephen A; Piquero, Alex R; Reingle Gonzalez, Jennifer M

2017-07-01

To examine how sublethal use-of-force patterns vary across officer-civilian race/ethnicity while accounting for officer-, civilian-, and situational-level factors. We extracted cross-sectional data from 5630 use-of-force reports from the Dallas Police Department in 2014 and 2015. We categorized each officer-civilian interaction into race/ethnicity dyads. We used multilevel, mixed logistic regression models to evaluate the relationship between race/ethnicity dyads and the types of use of force. Forty-eight percent of use-of-force interactions occurred between a White officer and a non-White civilian (White-non-White). In bivariate models, the odds of hard-empty hand control and intermediate weapon use were significantly higher among White-Black dyads compared with White-White dyads. The bivariate odds of intermediate weapon use were also significantly higher among Black-Black, Hispanic-White, Black-Hispanic, and Hispanic-Black dyads compared with White-White dyads. However, after we controlled for individual and situational factors, the relationship between race/ethnicity dyad and hard-empty hand control was no longer significant. Although we observed significant bivariate relationships between race/ethnicity dyads and use of force, these relationships largely dissipated after we controlled for other factors.

Weakener of White (Wow), a Gene That Modifies the Expression of the White Eye Color Locus and That Suppresses Position Effect Variegation in Drosophila Melanogaster

PubMed Central

Birchler, J. A.; Bhadra, U.; Rabinow, L.; Linsk, R.; Nguyen-Huynh, A. T.

1994-01-01

A locus is described in Drosophila melanogaster that modifies the expression of the white eye color gene. This trans-acting modifier reduces the expression of the white gene in the eye, but elevates the expression in other adult tissues. Because of the eye phenotype in which the expression of white is lessened but not eliminated, the newly described locus is called the Weakener of white (Wow). Northern analysis reveals that Wow can exert an inverse or direct modifying effect depending upon the developmental stage. Two related genes, brown and scarlet, that are coordinately expressed with white, are also affected by Wow. In addition, Wow modulates the steady state RNA level of the retrotransposon, copia. When tested with a white promoter-Alcohol dehydrogenase reporter, Wow confers the modifying effect to the reporter, suggesting a requirement of the white regulatory sequences for mediating the response. In addition to being a dosage sensitive regulator of white, brown, scarlet and copia, Wow acts as a suppressor of position effect variegation. There are many dosage sensitive suppressors of position effect variegation and many dosage-sensitive modifiers of gene expression. The Wow mutations provide evidence for an overlap between the two types of modifiers. PMID:7982560

Prevalence and Correlates of Substance Use in Black, White, and Biracial Black-White Adolescents: Evidence for a Biracial Intermediate Phenomena

PubMed Central

Goings, Trenette Clark; Butler-Bente, Emily; McGovern, Tricia; Howard, Matthew O.

2016-01-01

Most substance-use prevention interventions are based on the implicit assumption that risk and protective factors for substance use are the same for biracial and monoracial youth. However, preliminary research suggests this assumption may be untrue. This study compared the prevalence and correlates of substance use among Black, White, and biracial Black-White youth. Data were derived from the National Longitudinal Study of Adolescent and Adult Health (Add Health), which is a longitudinal investigation using stratified random sampling to study health behaviors. After controlling for sociodemographic factors and using weighted Poisson and logistic regression, we found the substance-use prevalence rates of Black-White youth to be intermediate to the higher rates of Whites and lower rates of Blacks. In addition, Black-White youth’s scores on most covariates were intermediate to those of the monoracial groups. Family factors were more important in explaining higher substance use than other contextual factors. School factors seem to be important in explaining lower substance use for Black-White youth. Correlates of substance use for Black-White youth were not identical to those of either Black or White youth. More research on the observed intermediate phenomena among biracial youth vis-à-vis prevalence, correlates, and causes of substance use is needed. PMID:27427812

Racial Disparities in Access and Outcomes of Cholecystectomy in the United States.

PubMed

Gahagan, John V; Hanna, Mark H; Whealon, Matthew D; Maximus, Steven; Phelan, Michael J; Lekawa, Michael; Barrios, Cristobal; Bernal, Nicole P

2016-10-01

Disparities in access to health care between white and minority patients are well described. We aimed to analyze the trends and outcomes of cholecystectomy based on racial classification. The Nationwide Inpatient Sample database was reviewed for all patients undergoing cholecystectomy from 2009 to 2012. Patients were stratified as white or non-white. A total of 243,536 patients were analyzed: 159,901 white and 83,635 non-white. Non-white patients had significantly higher proportions of Medicaid (25% vs 9.3%), self-pay (14% vs 7.1%), and no-charge (1.8% vs 0.64%). Non-white patients had significantly higher rates of emergent admission (84% vs 78%) compared with the white patients. Multivariate analysis revealed that non-whites had a significantly longer length of stay [mean difference of 0.14 days, 95% confidence interval (CI) 0.08-0.20] and higher total hospital charges (mean difference of $6748.00, 95% CI 5994.19-7501.81) than whites, despite a lower morbidity (odds ratio 0.94, 95% CI 0.90-0.98). Use of laparoscopy and mortality were not different. These differences persisted on subgroup analysis by insurance type. These findings suggest a gap in access to and outcomes of cholecystectomy in the minority population nationwide.

in vivo quantification of white matter microstructure for use in aging: A focus on two emerging techniques

PubMed Central

Lamar, Melissa; Zhou, Xiaohong Joe; Charlton, Rebecca A.; Dean, Douglas; Little, Deborah; Deoni, Sean C

2013-01-01

Human brain imaging has seen many advances in the quantification of white matter in vivo. For example, these advances have revealed the association between white matter damage and vascular disease as well as their impact on risk for and development of dementia and depression in an aging population. Current neuroimaging methods to quantify white matter damage provide a foundation for understanding such age-related neuropathology; however, these methods are not as adept at determining the underlying microstructural abnormalities signaling at risk tissue or driving white matter damage in the aging brain. This review will begin with a brief overview of the use of diffusion tensor imaging (DTI) in understanding white matter alterations in aging before focusing in more detail on select advances in both diffusion-based methods and multi-component relaxometry techniques for imaging white matter microstructural integrity within myelin sheaths and the axons they encase. While DTI greatly extended the field of white matter interrogation, these more recent technological advances will add clarity to the underlying microstructural mechanisms that contribute to white matter damage. More specifically, the methods highlighted in this review may prove more sensitive (and specific) for determining the contribution of myelin versus axonal integrity to the aging of white matter in brain. PMID:24080382

White opioids: Pharmaceutical race and the war on drugs that wasn’t

PubMed Central

Netherland, Julie; Hansen, Helena

2016-01-01

The US ‘War on Drugs’ has had a profound role in reinforcing racial hierarchies. Although Black Americans are no more likely than Whites to use illicit drugs, they are 6–10 times more likely to be incarcerated for drug offenses. Meanwhile, a very different system for responding to the drug use of Whites has emerged. This article uses the recent history of White opioids – the synthetic opiates such as OxyContin® that gained notoriety starting in the 1990s in connection with epidemic prescription medication abuse among White, suburban and rural Americans and Suboxone® that came on the market as an addiction treatment in the 2000s – to show how American drug policy is racialized, using the lesser known lens of decriminalized White drugs. Examining four ‘technologies of whiteness’ (neuroscience, pharmaceutical technology, legislative innovation and marketing), we trace a separate system for categorizing and disciplining drug use among Whites. This less examined ‘White drug war’ has carved out a less punitive, clinical realm for Whites where their drug use is decriminalized, treated primarily as a biomedical disease, and where their whiteness is preserved, leaving intact more punitive systems that govern the drug use of people of color. PMID:28690668

Fifty shades of white: how white feather brightness differs among species

NASA Astrophysics Data System (ADS)

Igic, Branislav; D'Alba, Liliana; Shawkey, Matthew D.

2018-04-01

White colouration is a common and important component of animal visual signalling and camouflage, but how and why it varies across species is poorly understood. White is produced by wavelength-independent and diffuse scattering of light by the internal structures of materials, where the degree of brightness is related to the amount of light scattered. Here, we investigated the morphological basis of brightness differences among unpigmented pennaceous regions of white body feathers across 61 bird species. Using phylogenetically controlled comparisons of reflectance and morphometric measurements, we show that brighter white feathers had larger and internally more complex barbs than duller white feathers. Higher brightness was also associated with more closely packed barbs and barbules, thicker and longer barbules, and rounder and less hollow barbs. Larger species tended to have brighter white feathers than smaller species because they had thicker and more complex barbs, but aquatic species were not significantly brighter than terrestrial species. As similar light scattering principals affect the brightness of chromatic signals, not just white colours, these findings help broaden our general understanding of the mechanisms that affect plumage brightness. Future studies should examine how feather layering on a bird's body contributes to differences between brightness of white plumage patches within and across species.

The white gene of Drosophila melanogaster encodes a protein with a role in courtship behavior.

PubMed

Anaka, Matthew; MacDonald, C Danielle; Barkova, Eva; Simon, Karl; Rostom, Reem; Godoy, Ruth A; Haigh, Andrew J; Meinertzhagen, Ian A; Lloyd, Vett

2008-01-01

The white gene of Drosophila melanogaster has been extensively studied, yet it is still not understood how its ectopic overexpression induces male-male courtship. To investigate the cellular basis of this behavior, we examined the sexual behavior of several classes of mutants. We find that male-male courtship is seen not only in flies overexpressing the white gene, but also in mutants expected to have mislocalized White protein. This finding confirms that mislocalizing White transporter in the cells in which it is normally expressed will produce male-male courtship behaviors; the courtship behavior is not an indirect consequence of aberrant physiological changes elsewhere in the body. Male-male courtship is also seen in some mutants with altered monoamine metabolism and deficits in learning and memory, but can be distinguished from that produced by White mislocalization by its reduced intensity and locomotor activity. Double mutants overexpressing white and with mutations in genes for serotonergic neurons suggest that male-male courtship produced by mislocalizing White may not be mediated exclusively by serotonergic neurons. We also find decreased olfactory learning in white mutants and in individuals with mutations in the genes for White's binding partners, brown and scarlet. Finally, in cultured Drosophila and mammalian cells, the White transporter is found in the endosomal compartment. The additional genes identified here as being involved in male-male courtship increase the repertoire of mutations available to study sexual behavior in Drosophila.

Coat color genetics of Peromyscus: IV. Variable white, a new dominant mutation in the deer mouse.

PubMed

Cowling, K; Robbins, R J; Haigh, G R; Teed, S K; Dawson, W D

1994-01-01

The variable white mutation arose spontaneously in 1983 within a laboratory stock of wild-type deer mice (Peromyscus maniculatus). The original mutant animal was born to a wild-type pair that had previously produced several entirely wild-type litters. Other variable white animals were bred from the initial individual. Variable white deer mice exhibit extensive areas of white on the head, sides, and tail. Usually a portion of pigmented pelage occurs dorsally and on the shoulders, but the extent of white varies from nearly all white to patches of white on the muzzle, tip of tail, and sides. The pattern is irregular, but not entirely asymmetrical. Eyes are pigmented, but histologically reveal a decrease in thickness and pigmentation of the choroid layer. Many variable white animals do not respond to auditory stimuli, an effect that is particularly evident in animals in which the head is entirely white. Ataxic behavior is also prevalent. Pigment distribution, together with auditory and retinal deficiencies, suggests a neural crest cell migration defect. Breeding data are consistent with an autosomal semidominant, lethal mode of inheritance. The trait differs from two somewhat similar variants in Peromyscus: from dominant spot (S) in extent and pattern of pigmentation and from whiteside (ws), an autosomal recessive trait, in the mode of inheritance and viability. Evidence for possible homology with the Va (varitint-waddler) locus in house mouse (Mus) is presented. The symbol Vw is tentatively assigned for the variable white locus in Peromyscus.

White Dots as a Novel Marker of Diabetic Retinopathy Severity in Ultrawide Field Imaging

PubMed Central

Dodo, Yoko; Murakami, Tomoaki; Unoki, Noriyuki; Ogino, Ken; Uji, Akihito; Yoshitake, Shin; Yoshimura, Nagahisa

2016-01-01

Purpose To characterize white dots in diabetic retinopathy (DR) and their association with disease severity using ultra-wide-field scanning laser ophthalmoscopy. Methods We randomly selected 125 eyes of 77 patients (25 eyes from individual categories of the international classification of DR severity) for which ultrawide field photographs were obtained. We characterized white dots, which were delineated by higher signal levels on green but not red laser images, and evaluated the relationship between the number of white dots and the international severity scale of DR. Results Most white dots were located in nonperfused areas, and the number of total white dots was significantly correlated to that of dots in nonperfused areas. White dots corresponded to microaneurysms around the boundary between nonperfused areas and perfused areas or unknown lesions in nonperfused areas. Eyes with DR had significantly more white dots than those with no apparent retinopathy. The numbers of white dots in moderate nonproliferative diabetic retinopathy (NPDR) or more severe grades were significantly higher than in mild NPDR. The area under the receiver operating characteristics curve (AROC) analyses demonstrated that the number of white dots had the significance in the diagnosis of DR (0.908–0.986) and moderate NPDR or more severe grades (0.888–0.974). Conclusions These data suggest the clinical relevance of white dots seen on ultrawide field images in the diagnosis of the severity of DR. PMID:27812207

Effects of white matter lesions on brain perfusion in patients with mild cognitive impairment.

PubMed

Ishibashi, Masato; Kimura, Noriyuki; Aso, Yasuhiro; Matsubara, Etsuro

2018-05-01

To evaluate the effects of white matter lesions on regional cerebral blood flow in subjects with amnestic mild cognitive impairment. Seventy-five subjects with mild cognitive impairment (36 men and 39 women; mean age, 78.1 years) were included in the study. We used the Mini-Mental State Examination to assess cognitive function. All subjects underwent brain magnetic resonance imaging and 99m Tc ethylcysteinate dimer single photon emission computed tomography. Subjects were stratified based on the presence or absence of white matter lesions on magnetic resonance imaging. Statistical parametric mapping of differences in regional cerebral blood flow between the two groups were assessed by voxel-by-voxel group analysis using SPM8. Of all 75 subjects with mild cognitive impairment, 46 (61.3%) had mild to moderate white matter lesions. The prevalence of hypertension tended to be higher in subjects with white matter lesions than in those without white matter lesions. Mini-Mental State Examination scores were significantly lower in subjects with white matter lesions than in those without white matter lesions. Subjects with white matter lesions had decreased regional cerebral blood flow mainly in the frontal, parietal, and medial temporal lobes, as well as the putamen, compared to those without white matter lesions. In subjects with mild cognitive impairment, white matter lesions were associated with cognitive impairment and mainly frontal lobe brain function. Copyright © 2018 Elsevier B.V. All rights reserved.

Distribution and color variation of gyrfalcons in Russia

USGS Publications Warehouse

Ellis, D.H.; Ellis, Catherine H.; Pendleton, G.W.; Panteleyev, A.V.; Rebrova, I.V.; Markin, Y.M.

1992-01-01

Gyrfalcon (Falco rusticolus) museum specimens in Moscow (73) and St. Petersburg (132) were divided into four color classes (gray, light gray, white gray, and white) and four longitudinal belts representing major physiographic regions of northern Russia. Gray variants predominated in the west and central regions. White birds were most common in extreme eastern Siberia, but were occasionally found even west of the Ural Mountains. Frequencies were as follows: European Russia 4% white, 50% gray (the remainder were intermediates); western Siberia 0% white, 58% gray; central Siberia 15% white, 42% gray; and eastern Siberia 47% white, 33% gray. Remarkably, in the easternmost subregion, white birds predominated even near the southernmost extension. Because the northernmost portions of the species' range in continental Russia are in central Siberia where white variants were rare, we propose that a better predictor of the white variant is longitude, not latitude. White birds were most frequent at the eastern reaches of both the Palearctic and Nearctic. The best environmental correlates of this distribution pattern may be the southward bending thermal isoclines proceeding eastward toward Greenland or Kamchatka, where both land masses are bathed by cold oceanic currents of Arctic origin. By contrast, the western reaches of both land masses are bathed by warm currents. In these western reaches, Gyrfalcon summer distribution is displaced northward and dark variants predominate. The breeding range of the Gyrfalcon, determined by mapping the locations of the specimens we examined, differs little from the range proposed in 1951.

The Value Of Different Standards And Measurement Systems To Determine The Optical Properties Of Paper And For Standardized Color Reproduction

NASA Astrophysics Data System (ADS)

Sobotica, Werner

1990-06-01

Several terms are used to determine the optical properties of paper and board. Brightness, whiteness, diffuse reflectance factor, diffuse blue reflectance factor, specular gloss, spectral reflectivity and whiteness and yellowness are the used terms. The mainly used term is brightness of paper, an important property in many specifications, but this property has no visual perceptual foundation. Instead it is based on the filter chosen to measure the reflectance of pulp in the region most sensitive to the effects, of bleaching. Therefore an increasing demand for a specification of whiteness can be observed. Belonging to the concept of color, whiteness has to be measured and interpreted in the scope of CIE (Commission Internationale l'Eclairage) based on colorimetri tristimulus data transformed to agree with the perceptual assessment of whiteness. Human observers differentiate between the whiteness of the object being viewed and its brightness. A special index of whiteness is needed. No general agreement was so far reached regarding the best index which could and should be adopted universally among the two recommended by the CIE. Nearly every white sample is a little colored, having bluish, greenish or redish tint. In the post no numerical measure of tint was assigned to any of the whiteness indexes. Further problems arise that fluorescent whiteness agents are added to paper and board to increase their whiteness. This requires not only instrumental design and calibration but also the illuminant to be adopted for such measurements.

Color Degradation of Textiles with Natural Dyes and of Blue Scale Standards Exposed to White LED Lamps:Evaluation of White LED Lamps for Effectiveness as Museum Lighting

NASA Astrophysics Data System (ADS)

Ishii, Mie; Moriyama, Takayoshi; Toda, Masahiro; Kohmoto, Kohtaro; Saito, Masako

White light-emitting diodes (LED) are well suited for museum lighting because they emit neither UV nor IR radiation, which damage artifacts. The color degradation of natural dyes and blue scale standards (JIS L 0841) by white LED lamps are examined, and the performance of white LED lamps for museum lighting is evaluated. Blue scale standard grades 1-6 and silk fabrics dyed with 22 types of natural dyes classified as mid to highly responsive in a CIE technical report (CIE157:2004) were exposed to five types of white LED lamps using different luminescence methods and color temperatures. Color changes were measured at each 15000 lx·hr (500 lx at fabric surface × 300 hr) interval ten times. The accumulated exposure totaled 150000 lx·hr. The data on conventional white LED lamps and previously reported white fluorescent (W) and museum fluorescent (NU) lamps was evaluated. All the white LED lamps showed lower fading rates compared with a W lamp on a blue scale grade 1. The fading rate of natural dyes in total was the same between an NU lamp (3000 K) and a white LED lamp (2869 K). However, yellow natural dyes showed higher fading rates with the white LED lamp. This tendency is due to the high power characteristic of the LED lamp around 400-500 nm, which possibly contributes to the photo-fading action on the dyes. The most faded yellow dyes were Ukon (Curcuma longa L.) and Kihada (Phellodendron amurense Rupr.), and these are frequently used in historic artifacts such as kimono, wood-block prints, and scrolls. From a conservation point of view, we need to continue research on white LED lamps for use in museum lighting.

Episodic memory function is associated with multiple measures of white matter integrity in cognitive aging

PubMed Central

Lockhart, Samuel N.; Mayda, Adriane B. V.; Roach, Alexandra E.; Fletcher, Evan; Carmichael, Owen; Maillard, Pauline; Schwarz, Christopher G.; Yonelinas, Andrew P.; Ranganath, Charan; DeCarli, Charles

2011-01-01

Previous neuroimaging research indicates that white matter injury and integrity, measured respectively by white matter hyperintensities (WMH) and fractional anisotropy (FA) obtained from diffusion tensor imaging (DTI), differ with aging and cerebrovascular disease (CVD) and are associated with episodic memory deficits in cognitively normal older adults. However, knowledge about tract-specific relationships between WMH, FA, and episodic memory in aging remains limited. We hypothesized that white matter connections between frontal cortex and subcortical structures as well as connections between frontal and temporo-parietal cortex would be most affected. In the current study, we examined relationships between WMH, FA and episodic memory in 15 young adults, 13 elders with minimal WMH and 15 elders with extensive WMH, using an episodic recognition memory test for object-color associations. Voxel-based statistics were used to identify voxel clusters where white matter measures were specifically associated with variations in episodic memory performance, and white matter tracts intersecting these clusters were analyzed to examine white matter-memory relationships. White matter injury and integrity measures were significantly associated with episodic memory in extensive regions of white matter, located predominantly in frontal, parietal, and subcortical regions. Template based tractography indicated that white matter injury, as measured by WMH, in the uncinate and inferior longitudinal fasciculi were significantly negatively associated with episodic memory performance. Other tracts such as thalamo-frontal projections, superior longitudinal fasciculus, and dorsal cingulum bundle demonstrated strong negative associations as well. The results suggest that white matter injury to multiple pathways, including connections of frontal and temporal cortex and frontal-subcortical white matter tracts, plays a critical role in memory differences seen in older individuals. PMID:22438841

THE POST-MERGER MAGNETIZED EVOLUTION OF WHITE DWARF BINARIES: THE DOUBLE-DEGENERATE CHANNEL OF SUB-CHANDRASEKHAR TYPE Ia SUPERNOVAE AND THE FORMATION OF MAGNETIZED WHITE DWARFS

DOE Office of Scientific and Technical Information (OSTI.GOV)

Ji Suoqing; Fisher, Robert T.; Garcia-Berro, Enrique

2013-08-20

Type Ia supernovae (SNe Ia) play a crucial role as standardizable cosmological candles, though the nature of their progenitors is a subject of active investigation. Recent observational and theoretical work has pointed to merging white dwarf binaries, referred to as the double-degenerate channel, as the possible progenitor systems for some SNe Ia. Additionally, recent theoretical work suggests that mergers which fail to detonate may produce magnetized, rapidly rotating white dwarfs. In this paper, we present the first multidimensional simulations of the post-merger evolution of white dwarf binaries to include the effect of the magnetic field. In these systems, the twomore » white dwarfs complete a final merger on a dynamical timescale, and are tidally disrupted, producing a rapidly rotating white dwarf merger surrounded by a hot corona and a thick, differentially rotating disk. The disk is strongly susceptible to the magnetorotational instability (MRI), and we demonstrate that this leads to the rapid growth of an initially dynamically weak magnetic field in the disk, the spin-down of the white dwarf merger, and to the subsequent central ignition of the white dwarf merger. Additionally, these magnetized models exhibit new features not present in prior hydrodynamic studies of white dwarf mergers, including the development of MRI turbulence in the hot disk, magnetized outflows carrying a significant fraction of the disk mass, and the magnetization of the white dwarf merger to field strengths {approx}2 Multiplication-Sign 10{sup 8} G. We discuss the impact of our findings on the origins, circumstellar media, and observed properties of SNe Ia and magnetized white dwarfs.« less

Individual and System Contributions to Race and Sex Disparities in Thrombolysis Use for Stroke Patients in the United States.

PubMed

Faigle, Roland; Urrutia, Victor C; Cooper, Lisa A; Gottesman, Rebecca F

2017-04-01

Intravenous thrombolysis (IVT) is underutilized in ethnic minorities and women. To disentangle individual and system-based factors determining disparities in IVT use, we investigated race/sex differences in IVT utilization among hospitals serving varying proportions of minority patients. Ischemic stroke admissions were identified from the Nationwide Inpatient Sample between 2007 and 2011. Hospitals were categorized based on the percentage of minority patients admitted with stroke (<25% minority patients [white hospitals], 25% to 50% minority patients [mixed hospitals], or >50% minority patients [minority hospitals]). Logistic regression was used to evaluate the association between race/sex and IVT use within and between the different hospital strata. Among 337 201 stroke admissions, white men had the highest odds of IVT among all race/sex groups in any hospital strata, and the odds of IVT for white men did not differ by hospital strata. For white women and minority men, the odds of IVT were significantly lower in minority hospitals compared with white hospitals (odds ratio, 0.83; 95% confidence interval, 0.71-0.97, for white women; and odds ratio, 0.82; 95% confidence interval, 0.69-0.99, for minority men). Race disparities in IVT use among women were observed in white hospitals (odds ratio, 0.88; 95% confidence interval, 0.78-0.99, in minority compared with white women), but not in minority hospitals (odds ratio, 0.94, 95% confidence interval, 0.82-1.09). Sex disparities in IVT use were observed among whites but not among minorities. Minority men and white women have significantly lower odds of IVT in minority hospitals compared with white hospitals. IVT use in white men does not differ by hospital strata. © 2017 American Heart Association, Inc.

DA white dwarfs in Sloan Digital Sky Survey Data Release 7 and a search for infrared excess emission

NASA Astrophysics Data System (ADS)

Girven, J.; Gänsicke, B. T.; Steeghs, D.; Koester, D.

2011-10-01

We present a method which uses colour-colour cuts on the Sloan Digital Sky Survey (SDSS) photometry to select white dwarfs with hydrogen-rich (DA) atmospheres without the recourse to spectroscopy. This method results in a sample of DA white dwarfs that is 95 per cent complete at an efficiency of returning a true DA white dwarf of 62 per cent. The approach was applied to SDSS Data Release 7 for objects with and without SDSS spectroscopy. This led to 4636 spectroscopicially confirmed DA white dwarfs with g≤ 19; a ˜70 per cent increase compared to Eisenstein et al.'s 2006 sample. Including the photometric-only objects, we estimate a factor of 3 increase in DA white dwarfs. We find that the SDSS spectroscopic follow-up is 44 per cent complete for DA white dwarfs with Teff≳ 8000 K. We further cross-correlated the SDSS sample with Data Release 8 of the UKIRT (United Kingdom Infrared Telescope) Infrared Deep Sky Survey (UKIDSS) Large Area Survey. The spectral energy distributions (SED) of both subsets, with and without SDSS spectroscopy, were fitted with white dwarf models to determine the fraction of DA white dwarfs with low-mass stellar companions or dusty debris discs via the detection of excess near-infrared emission. From the spectroscopic sample we find that 2.0 per cent of white dwarfs have an excess consistent with a brown dwarf type companion, with a firm lower limit of 0.8 per cent. From the white dwarfs with photometry only, we find that 1.8 per cent are candidates for having brown dwarf companions. Similarly, both samples show that ˜1 per cent of white dwarfs are candidates for having a dusty debris disc.

A Comparative Analysis of Antimicrobial Property of Wine and Ozone with Calcium Hydroxide and Chlorhexidine

PubMed Central

Ebenezar, A. V. Rajesh; Anand, Nirupa; Mary, A.Vinita; Mony, Bejoy

2015-01-01

Background The antibacterial properties of wine and ozone have been established but their antibacterial efficacies against endodontic pathogens are yet to be ascertained. Aim The purpose of this study is to comparatively evaluate the antibacterial property of ozonated water, white wine (14%) and de-alcoholised white wine. Materials and Methods S.mutans and E.faecalis were subcultured and inoculated in a nutrient broth for 24 hours. The following groups were formulated: Group 1A:2% Chlorhexidine (Control group); Group 1B:White wine; Group 1C:Dealcoholised white wine; Group 1D:Ozonated water; Group 2A: Ca(OH)2 + Chlorhexidine (Control group); Group 2B: White wine + Ca(OH)2; Group 2C:De-alcoholised White wine + Ca(OH)2 + chlorhexidine; Group 2D:White wine + Ca(OH)2 + chlorhexidine and group 2E: Dealcoholised white wine + Ca(OH)2 + chlorhexidine. The samples were allowed to diffuse into the culture medium for two hours, later the S. mutans were streaked on to the blood agar medium and the E. faecalis were streaked on to the Muller Hilton agar medium and incubated for 48 hours at 370C the zone of inhibition was measured after 48 hours. Results There was no growth of microorganisms seen with ozonated water. Chlorhexidine showed large zone of inhibition compared to the other groups. White wine has better antimicrobial property than de-alcoholised white wine, but when mixed with calcium hydroxide the dealcoholised white wine has better action against the microorganisms. Conclusion Ozonated water has the best antibacterial property and the antibacterial action of Calcium hydroxide is enhanced when it is mixed with de-alcoholised white wine. PMID:26266206

The Post-merger Magnetized Evolution of White Dwarf Binaries: The Double-degenerate Channel of Sub-Chandrasekhar Type Ia Supernovae and the Formation of Magnetized White Dwarfs

NASA Astrophysics Data System (ADS)

Ji, Suoqing; Fisher, Robert T.; García-Berro, Enrique; Tzeferacos, Petros; Jordan, George; Lee, Dongwook; Lorén-Aguilar, Pablo; Cremer, Pascal; Behrends, Jan

2013-08-01

Type Ia supernovae (SNe Ia) play a crucial role as standardizable cosmological candles, though the nature of their progenitors is a subject of active investigation. Recent observational and theoretical work has pointed to merging white dwarf binaries, referred to as the double-degenerate channel, as the possible progenitor systems for some SNe Ia. Additionally, recent theoretical work suggests that mergers which fail to detonate may produce magnetized, rapidly rotating white dwarfs. In this paper, we present the first multidimensional simulations of the post-merger evolution of white dwarf binaries to include the effect of the magnetic field. In these systems, the two white dwarfs complete a final merger on a dynamical timescale, and are tidally disrupted, producing a rapidly rotating white dwarf merger surrounded by a hot corona and a thick, differentially rotating disk. The disk is strongly susceptible to the magnetorotational instability (MRI), and we demonstrate that this leads to the rapid growth of an initially dynamically weak magnetic field in the disk, the spin-down of the white dwarf merger, and to the subsequent central ignition of the white dwarf merger. Additionally, these magnetized models exhibit new features not present in prior hydrodynamic studies of white dwarf mergers, including the development of MRI turbulence in the hot disk, magnetized outflows carrying a significant fraction of the disk mass, and the magnetization of the white dwarf merger to field strengths ~2 × 108 G. We discuss the impact of our findings on the origins, circumstellar media, and observed properties of SNe Ia and magnetized white dwarfs.

A genome-wide scan study identifies a single nucleotide substitution in ASIP associated with white versus non-white coat-colour variation in sheep (Ovis aries)

PubMed Central

Li, M-H; Tiirikka, T; Kantanen, J

2014-01-01

In sheep, coat colour (and pattern) is one of the important traits of great biological, economic and social importance. However, the genetics of sheep coat colour has not yet been fully clarified. We conducted a genome-wide association study of sheep coat colours by genotyping 47 303 single-nucleotide polymorphisms (SNPs) in the Finnsheep population in Finland. We identified 35 SNPs associated with all the coat colours studied, which cover genomic regions encompassing three known pigmentation genes (TYRP1, ASIP and MITF) in sheep. Eighteen of these associations were confirmed in further tests between white versus non-white individuals, but none of the 35 associations were significant in the analysis of only non-white colours. Across the tests, the s66432.1 in ASIP showed significant association (P=4.2 × 10−11 for all the colours; P=2.3 × 10−11 for white versus non-white colours) with the variation in coat colours and strong linkage disequilibrium with other significant variants surrounding the ASIP gene. The signals detected around the ASIP gene were explained by differences in white versus non-white alleles. Further, a genome scan for selection for white coat pigmentation identified a strong and striking selection signal spanning ASIP. Our study identified the main candidate gene for the coat colour variation between white and non-white as ASIP, an autosomal gene that has been directly implicated in the pathway regulating melanogenesis. Together with ASIP, the two other newly identified genes (TYRP1 and MITF) in the Finnsheep, bordering associated SNPs, represent a new resource for enriching sheep coat-colour genetics and breeding. PMID:24022497

Cultural Variation in Vigilance and Precaution Themes

DTIC Science & Technology

2012-09-01

White. The Non-White sample is varied and includes Zulu , Sotho, Xhoza, Indians and others. There was found a significant difference between different...after precautions are taken, providing people with a sense of safety.  The purpose of this study was to use no-risk, non-invasive survey questionnaires...background: White and Non-White. The Non-White sample is varied and includes Zulu , Sotho, Xhoza, Indians and others. There was found a significant

Ethnic Differences in Body Composition and Obesity Related Risk Factors: Study in Chinese and White Males Living in China

PubMed Central

Wang, Dong; Li, Yanping; Lee, Simin Gharib; Wang, Lei; Fan, Jinhui; Zhang, Gong; Wu, Jiang; Ji, Yong; Li, Songlin

2011-01-01

The purpose of this cross-sectional observational study was to identify ethnic differences in body composition and obesity-related risk factors between Chinese and white males living in China. 115 Chinese and 114 white male pilots aged 28–63 years were recruited. Fasting body weight, height and blood pressure were measured following standard procedures. Whole-body and segmental body composition were measured using an 8-contact electrode bioimpedance analysis (BIA) system. Fasting serum glucose, fasting plasma total cholesterol (TC), high-density lipoprotein (HDL) cholesterol, and triglycerides (TG) were assessed using automatic biochemistry analyzer. After adjusting for age and body mass index (BMI), Chinese males had significantly higher percentage of body fat (PBF) both with respect to whole body (Chinese: 23.7%±0.2% vs. Whites: 22.4%±0.2%) and the trunk area (Chinese: 25.0%±0.3% vs. Whites: 23.2%±0.3%) compared to their white counterparts. At all BMIs, Chinese males had significantly higher fasting glucose levels (Chinese: 5.7±1.0 mmol/L vs. Whites: 5.2±1.0 mmol/L) but lower high-density lipoprotein levels (Chinese: 0.8±1.0 mmol/L vs. Whites: 1.0±1.0 mmol/L) than white males. In addition, a marginally significantly higher diastolic blood pressure was found among Chinese men than that among white men (Chinese: 80±1.0 mmHg vs. Whites: 77±1.0 mmHg). Chinese males had more body fat and a greater degree of central fat deposition pattern than that seen in white males in the present study. Furthermore, data on blood pressure, fasting glucose and blood lipids suggest that Chinese men may be more prone to obesity-related risk factors than white men. PMID:21625549

Focusing on butterfly eyespot focus: uncoupling of white spots from eyespot bodies in nymphalid butterflies.

PubMed

Iwata, Masaki; Otaki, Joji M

2016-01-01

Developmental studies on butterfly wing color patterns often focus on eyespots. A typical eyespot (such as that of Bicyclus anynana) has a few concentric rings of dark and light colors and a white spot (called a focus) at the center. The prospective eyespot center during the early pupal stage is known to act as an organizing center. It has often been assumed, according to gradient models for positional information, that a white spot in adult wings corresponds to an organizing center and that the size of the white spot indicates how active that organizing center was. However, there is no supporting evidence for these assumptions. To evaluate the feasibility of these assumptions in nymphalid butterflies, we studied the unique color patterns of Calisto tasajera (Nymphalidae, Satyrinae), which have not been analyzed before in the literature. In the anterior forewing, one white spot was located at the center of an eyespot, but another white spot associated with either no or only a small eyespot was present in the adjacent compartment. The anterior hindwing contained two adjacent white spots not associated with eyespots, one of which showed a sparse pattern. The posterior hindwing contained two adjacent pear-shaped eyespots, and the white spots were located at the proximal side or even outside the eyespot bodies. The successive white spots within a single compartment along the midline in the posterior hindwing showed a possible trajectory of a positional determination process for the white spots. Several cases of focus-less eyespots in other nymphalid butterflies were also presented. These results argue for the uncoupling of white spots from eyespot bodies, suggesting that an eyespot organizing center does not necessarily differentiate into a white spot and that a prospective white spot does not necessarily signify organizing activity for an eyespot. Incorporation of these results in future models for butterfly wing color pattern formation is encouraged.

The Complicated Realities of Whiteness: From Color Blind to Racially Cognizant

ERIC Educational Resources Information Center

Reason, Robert D.; Evans, Nancy J.

2007-01-01

This chapter examines color-blind campuses that perpetuate White transparency and racially cognizant environments that reveal and challenge notions of color blindness. Recommendations are offered to help White students respond to the realities of Whiteness and move beyond color-blind racism.

Silvical characteristics of white ash (Fraxinus americana)

Treesearch

Jonathan W. Wright

1959-01-01

White ash (Fraxinus americana L.) derives its common name from the white under-surface of the leaf; the white effect is created by microscopic papillae with a high light-reflecting capacity. The specific name americana was given to the species because of its range in America.

A Principled Pedagogy for Religious Educators

ERIC Educational Resources Information Center

Evans, David; Shearer, Tobin Miller

2017-01-01

Drawing on whiteness literature and over fifty years of combined classroom instruction experience, two professors of race and religion-one black, one white-at predominantly white institutions, answer the question, "How do we as religious educators effectively teach white students to challenge racially distorted assumptions and promote…

White Attitudes toward Busing: Segregation and the Life Cycle.

ERIC Educational Resources Information Center

Edari, Ronald S.

1979-01-01

Factors involved in the determination of White attitudes toward busing are discussed. The term White flight is considered a euphemism for the process in which the responsibility for housing discrimination is shifted from the structure of the capitalist system to White community residents. (RLV)

Differences in the Portrayal of Health Risk Behaviors by Black and White Characters in Popular Films.

PubMed

Ellithorpe, Morgan E; Bleakley, Amy; Hennessy, Michael; Weitz, Ilana; Jamieson, Patrick; Khurana, Atika

2017-06-01

Adolescent exposure to risk in film has been associated with behavior. We coded Black and White character involvement in sex, violence, alcohol use, and tobacco use, and combinations of those behaviors in popular mainstream and Black-oriented films (film n = 63, character n = 426). Health risk portrayals were common, with the majority of characters portraying at least one. Black characters were more likely than Whites to portray sex and alcohol use, while White characters were more likely to portray violence. Within-segment combinations of sex and alcohol were more prevalent for Black characters, while violence and alcohol were more prevalent for Whites. Throughout a film, Black characters were more likely than White characters to portray sex and alcohol, sex and tobacco, and alcohol and tobacco. Risky behaviors are prevalent, but types portrayed differ between Black and White characters. This may have implications for health disparities in Black and White adolescents.

Food habits of stunted and non-stunted white perch (Morone americana)

USGS Publications Warehouse

Gosch, N.J.C.; Stittie, J.R.; Pope, K.L.

2010-01-01

We studied food habits of white perch (Morone americana) from two populations with different stable states (stunted [Branched Oak Lake, Nebraska] and nonstunted [Pawnee Lake, Nebraska]) to determine if change in food habits of white perch is likely to occur in situations where a stunted white perch population is altered to a nonstunted state and vice versa. Three approaches were used to quantitatively describe seasonal (spring = March-May, summer = June-August, autumn = September-November) diets of white perch - 1) frequency of occurrence, 2) percentage of composition by volume, and 3) mean stomach fullness. White perch diets were dominated by cladocerans and dipterans in both reservoirs during all seasons. Fish egg predation was similar between reservoirs, and white perch rarely consumed fishes in either the stunted or the non-stunted population. Shifting a white perch population between stunted and non-stunted states will likely cause little or no change in food habits; fish in both states will primarily consume invertebrates.

Think Leader, Think White? Capturing and Weakening an Implicit Pro-White Leadership Bias

PubMed Central

Gündemir, Seval; Homan, Astrid C.; de Dreu, Carsten K. W.; van Vugt, Mark

2014-01-01

Across four studies, we found evidence for an implicit pro-White leadership bias that helps explain the underrepresentation of ethnic minorities in leadership positions. Both White-majority and ethnic minority participants reacted significantly faster when ethnically White names and leadership roles (e.g., manager; Study 1) or leadership traits (e.g., decisiveness; Study 2 & 3) were paired in an Implicit Association Test (IAT) rather than when ethnic minority names and leadership traits were paired. Moreover, the implicit pro-White leadership bias showed discriminant validity with the conventional implicit bias measures (Study 3). Importantly, results showed that the pro-White leadership bias can be weakened when situational cues increase the salience of a dual identity (Study 4). This, in turn, can diminish the explicit pro-White bias in promotion related decision making processes (Study 4). This research offers a new tool to measure the implicit psychological processes underlying the underrepresentation of ethnic minorities in leadership positions and proposes interventions to weaken such biases. PMID:24416181

The persistence of white flight in middle-class suburbia.

PubMed

Kye, Samuel H

2018-05-01

Scholars have continued to debate the extent to which white flight remains racially motivated or, in contrast, the result of socioeconomic concerns that proxy locations of minority residence. Using 1990-2010 census data, this study contributes to this debate by re-examining white flight in a sample of both poor and middle-class suburban neighborhoods. Findings fail to provide evidence in support of the racial proxy hypothesis. To the contrary, for neighborhoods with a larger non-white presence, white flight is instead more likely in middle-class as opposed to poorer neighborhoods. These results not only confirm the continued salience of race for white flight, but also suggest that racial white flight may be motivated to an even greater extent in middle-class, suburban neighborhoods. Theoretically, these findings point to the decoupling of economic and racial residential integration, as white flight may persist for groups even despite higher levels of socioeconomic attainment. Copyright © 2018 Elsevier Inc. All rights reserved.

The impact of local black residents' socioeconomic status on white residents' racial views.

PubMed

Taylor, Marylee C; Reyes, Adriana M

2014-01-01

This paper extends the study of contextual influences on racial attitudes by asking how the SES of the local black community shapes the racial attitudes of local whites. Using responses to the 1998-2002 General Social Surveys merged with year 2000 census data, we compare the influences of black educational and economic composition on white residents' attitudes. Finally, the independence of these effects from the impact of white contextual SES is assessed. Across three dimensions of racial attitudes, white residents' views are more positive in localities where the black population contains more college graduates. However, such localities tend also to have highly educated white populations, as well as higher incomes among blacks and whites, and the multiple influences are inseparable. In contrast, many racial attitude measures show an independent effect of black economic composition, white residents reporting more negative views where the local African American community is poorer. Copyright © 2013 Elsevier Inc. All rights reserved.

Information about the US racial demographic shift triggers concerns about anti-White discrimination among the prospective White “minority”

PubMed Central

Richeson, Jennifer A.

2017-01-01

The United States is undergoing a demographic shift in which White Americans are predicted to comprise less than 50% of the US population by mid-century. The present research examines how exposure to information about this racial shift affects perceptions of the extent to which different racial groups face discrimination. In four experiments, making the growing national racial diversity salient led White Americans to predict that Whites will face increasing discrimination in the future, compared with control information. Conversely, regardless of experimental condition, Whites estimated that discrimination against various racial minority groups will decline. Explorations of several psychological mechanisms potentially underlying the effect of the racial shift information on perceived anti-White discrimination suggested a mediating role of concerns about American culture fundamentally changing. Taken together, these findings suggest that reports about the changing national demographics enhance concerns among Whites that they will be the victims of racial discrimination in the future. PMID:28953971

Differences in the Portrayal of Health Risk Behaviors by Black and White Characters in Popular Films

PubMed Central

ELLITHORPE, MORGAN E.; BLEAKLEY, AMY; HENNESSY, MICHAEL; WEITZ, ILANA; JAMIESON, PATRICK; KHURANA, ATIKA

2017-01-01

Adolescent exposure to risk in film has been associated with behavior. We coded Black and White character involvement in sex, violence, alcohol use, and tobacco use, and combinations of those behaviors in popular mainstream and Black-oriented films (film n = 63, character n = 426). Health risk portrayals were common, with the majority of characters portraying at least one. Black characters were more likely than Whites to portray sex and alcohol use, while White characters were more likely to portray violence. Within-segment combinations of sex and alcohol were more prevalent for Black characters, while violence and alcohol were more prevalent for Whites. Throughout a film, Black characters were more likely than White characters to portray sex and alcohol, sex and tobacco, and alcohol and tobacco. Risky behaviors are prevalent, but types portrayed differ between Black and White characters. This may have implications for health disparities in Black and White adolescents. PMID:28481166

White Adipose Tissue Is a Reservoir for Memory T Cells and Promotes Protective Memory Responses to Infection.

PubMed

Han, Seong-Ji; Glatman Zaretsky, Arielle; Andrade-Oliveira, Vinicius; Collins, Nicholas; Dzutsev, Amiran; Shaik, Jahangheer; Morais da Fonseca, Denise; Harrison, Oliver J; Tamoutounour, Samira; Byrd, Allyson L; Smelkinson, Margery; Bouladoux, Nicolas; Bliska, James B; Brenchley, Jason M; Brodsky, Igor E; Belkaid, Yasmine

2017-12-19

White adipose tissue bridges body organs and plays a fundamental role in host metabolism. To what extent adipose tissue also contributes to immune surveillance and long-term protective defense remains largely unknown. Here, we have shown that at steady state, white adipose tissue contained abundant memory lymphocyte populations. After infection, white adipose tissue accumulated large numbers of pathogen-specific memory T cells, including tissue-resident cells. Memory T cells in white adipose tissue expressed a distinct metabolic profile, and white adipose tissue from previously infected mice was sufficient to protect uninfected mice from lethal pathogen challenge. Induction of recall responses within white adipose tissue was associated with the collapse of lipid metabolism in favor of antimicrobial responses. Our results suggest that white adipose tissue represents a memory T cell reservoir that provides potent and rapid effector memory responses, positioning this compartment as a potential major contributor to immunological memory. Published by Elsevier Inc.

Contextual Variation in Automatic Evaluative Bias to Racially-Ambiguous Faces

PubMed Central

Ito, Tiffany A.; Willadsen-Jensen, Eve C.; Kaye, Jesse T.; Park, Bernadette

2011-01-01

Three studies examined the implicit evaluative associations activated by racially-ambiguous Black-White faces. In the context of both Black and White faces, Study 1 revealed a graded pattern of bias against racially-ambiguous faces that was weaker than the bias to Black faces but stronger than that to White faces. Study 2 showed that significant bias was present when racially-ambiguous faces appeared in the context of only White faces, but not in the context of only Black faces. Study 3 demonstrated that context produces perceptual contrast effects on racial-prototypicality judgments. Racially-ambiguous faces were perceived as more prototypically Black in a White-only than mixed-race context, and less prototypically Black in a Black-only context. Conversely, they were seen as more prototypically White in a Black-only than mixed context, and less prototypically White in a White-only context. The studies suggest that both race-related featural properties within a face (i.e., racial ambiguity) and external contextual factors affect automatic evaluative associations. PMID:21691437

Walking and Metabolic Syndrome in Older Adults

PubMed Central

Strath, Scott; Swartz, Ann; Parker, Sarah; Miller, Nora; Cieslik, Linda

2010-01-01

Background Little data exists describing the impact that walking has on metabolic syndrome (MetS) in a multicultural sample of older adults. Methods Walking was measured via pedometer in 150 older adults from 4 different ethnic categories. Steps per day were classified as low (<3100 steps/d) or high (≥3100 steps/d) for statistical analyses. Results Occurrence of MetS was lower in the white (33%) versus non-white population (50%). Low steps/d were related to an increase in MetS for both white (OR = 96.8, 95% CI 12.3–764.6) and non-white individuals (OR = 4.5, 95% CI 1.8–11.3). Low steps/d also increased the odds for selected components of MetS in both the white and non-white groups. Conclusion Low levels of walking increase the likelihood of having MetS in both white and non-white older adults. Efforts to increase walking in older adults may decrease the likelihood of developing this clustering of disease risk factors. PMID:18209231

Urban poverty and infant-health disparities among African Americans and whites in Milwaukee.

PubMed

Sims, Mario; Rainge, Yolanda

2002-06-01

This study examined neighborhood and infant health disparities between African-American and white mothers in Milwaukee, Wisconsin. Census-block data were used for 1990 and Vital Statistics data were used for 1992 through 1994. African-American mothers lived in less desirable, more segregated neighborhoods than white mothers did in 1990. African-American infant and neonatal mortality rates were twice those of whites (2.3 and 2.0, respectively), while African-American postneonatal mortality rates were three times that of whites (3.0). African-American low and very low birth weight rates were more than twice those of whites (2.5 and 2.6, respectively). All African-American mothers were nearly eight times as likely as all white mothers to have inadequate prenatal care, whereas poor African-American mothers were three times as likely to have inadequate prenatal care as were poor white mothers. Public health experts and practitioners may want to consider the communities of minority patients to devise interventions suitable for addressing health disparities.

Think leader, think White? Capturing and weakening an implicit pro-White leadership bias.

PubMed

Gündemir, Seval; Homan, Astrid C; de Dreu, Carsten K W; van Vugt, Mark

2014-01-01

Across four studies, we found evidence for an implicit pro-White leadership bias that helps explain the underrepresentation of ethnic minorities in leadership positions. Both White-majority and ethnic minority participants reacted significantly faster when ethnically White names and leadership roles (e.g., manager; Study 1) or leadership traits (e.g., decisiveness; Study 2 & 3) were paired in an Implicit Association Test (IAT) rather than when ethnic minority names and leadership traits were paired. Moreover, the implicit pro-White leadership bias showed discriminant validity with the conventional implicit bias measures (Study 3). Importantly, results showed that the pro-White leadership bias can be weakened when situational cues increase the salience of a dual identity (Study 4). This, in turn, can diminish the explicit pro-White bias in promotion related decision making processes (Study 4). This research offers a new tool to measure the implicit psychological processes underlying the underrepresentation of ethnic minorities in leadership positions and proposes interventions to weaken such biases.

Concept of white light in stage lighting

NASA Astrophysics Data System (ADS)

Rinaldi, Mauricio R.

2002-06-01

In perceiving objects, generally we see them in a white light situation. But, actually, there is not an absolute white, in such a manner that the different light sources have a determined kind of white, what it is known as color temperature. Even the white light may be of different kinds (different color temperature), the individual mind tends to perceive it as the same kind of white, that is to say, there is in our mind a psychological function by which we operate an integration in the perception in order to do the object perceptually invariable. On the other hand, it is a common practice in stage lighting to use color light sources. It is a well known phenomenon that a color of light produces a change in the object color perception. However, when we go to theater, we see the objects as having their real color, even if the lighting is not white. In this paper the concept of white light in stage lighting is presented, showing its possibilities of aesthetical expression.

Brumation of introduced Black and White Tegus, Tupinambis merianae (Squamata: Teiidae), in southern Florida

USGS Publications Warehouse

McEachern, Michelle; Yackel Adams, Amy A.; Klug, Page E.; Fitzgerald, Lee A.; Reed, Robert N.

2015-01-01

An established population of Tupinambis merianae (Black and White Tegu) in southeastern Florida threatens the Everglades ecosystem. Understanding the behavioral ecology of Black and White Tegus could aid in management and control plans. Black and White Tegus are seasonally active and brumate during the winter in their native range, but brumation behavior is largely unstudied in either the native or the invasive range. We describe the first observations of Black and White Tegu brumation in southeastern Florida after monitoring 5 free-ranging, adult male Black and White Tegus through an inactive season using radiotelemetry and automated cameras. Duration of brumation averaged 137 days, beginning in September and ending by February. One of the 5 Black and White Tegus emerged to bask regularly during brumation, which to our knowledge represents the first documented instance of a free-ranging Black and White Tegu basking during brumation. These preliminary findings provide a basis for future research of brumation behavior.

Information about the US racial demographic shift triggers concerns about anti-White discrimination among the prospective White "minority".

PubMed

Craig, Maureen A; Richeson, Jennifer A

2017-01-01

The United States is undergoing a demographic shift in which White Americans are predicted to comprise less than 50% of the US population by mid-century. The present research examines how exposure to information about this racial shift affects perceptions of the extent to which different racial groups face discrimination. In four experiments, making the growing national racial diversity salient led White Americans to predict that Whites will face increasing discrimination in the future, compared with control information. Conversely, regardless of experimental condition, Whites estimated that discrimination against various racial minority groups will decline. Explorations of several psychological mechanisms potentially underlying the effect of the racial shift information on perceived anti-White discrimination suggested a mediating role of concerns about American culture fundamentally changing. Taken together, these findings suggest that reports about the changing national demographics enhance concerns among Whites that they will be the victims of racial discrimination in the future.

Gaia Reveals Evidence for Merged White Dwarfs

NASA Astrophysics Data System (ADS)

Kilic, Mukremin; Hambly, N. C.; Bergeron, P.; Genest-Beaulieu, C.; Rowell, N.

2018-06-01

We use Gaia Data Release 2 to identify 13,928 white dwarfs within 100 pc of the Sun. The exquisite astrometry from Gaia reveals for the first time a bifurcation in the observed white dwarf sequence in both Gaia and the Sloan Digital Sky Survey (SDSS) passbands. The latter is easily explained by a helium atmosphere white dwarf fraction of 36%. However, the bifurcation in the Gaia colour-magnitude diagram depends on both the atmospheric composition and the mass distribution. We simulate theoretical colour-magnitude diagrams for single and binary white dwarfs using a population synthesis approach and demonstrate that there is a significant contribution from relatively massive white dwarfs that likely formed through mergers. These include white dwarf remnants of main-sequence (blue stragglers) and post-main sequence mergers. The mass distribution of the SDSS subsample, including the spectroscopically confirmed white dwarfs, also shows this massive bump. This is the first direct detection of such a population in a volume-limited sample.

Religious beliefs against smoking among Black and White urban youth

PubMed Central

Alexander, Adam C.; Robinson, Leslie A.; Ward, Kenneth D.; Farrell, Amy S.; Ferkin, Adam C.

2015-01-01

This study explores the relation of religiosity to cigarette smoking in a sample of 4,776 Black vs. White adolescents. Findings show that Black adolescents have significantly stronger religious beliefs against smoking than do White students. Further, teens with strong or very strong religious beliefs are less likely to have smoked. The protective effect of religious beliefs against smoking was stronger for Whites than for Blacks. These findings suggest that efforts in the Black religious community to prevent cigarette smoking have been somewhat successful. Similar efforts in the White community might help stem the tide of tobacco use among White teens. PMID:26510855

GRMHD formulation of highly super-Chandrasekhar magnetized white dwarfs: stable configurations of non-spherical white dwarfs

DOE Office of Scientific and Technical Information (OSTI.GOV)

Das, Upasana; Mukhopadhyay, Banibrata, E-mail: upasana@physics.iisc.ernet.in, E-mail: bm@physics.iisc.ernet.in

The topic of magnetized super-Chandrasekhar white dwarfs is in the limelight, particularly in the last few years, since our proposal of their existence. By full-scale general relativistic magnetohydrodynamic (GRMHD) numerical analysis, we confirm in this work the existence of stable, highly magnetized, significantly super-Chandrasekhar white dwarfs with mass more than 3 solar mass. While a poloidal field geometry renders the white dwarfs oblate, a toroidal field makes them prolate retaining an overall quasi-spherical shape, as speculated in our earlier work. These white dwarfs are expected to serve as the progenitors of over-luminous type Ia supernovae.

White girls: avant-gardism and advertising after 1860.

PubMed

Teukolsky, Rachel

2009-01-01

James McNeill Whistler's painting "The White Girl (Symphony in White, No. 1)" caused a scandal for depicting a woman dressed all in white, uncontained by any clear framing narrative. Though the painting is usually read into history of modernism for its experimental play with tones of white, in fact the painting was linked by Victorian viewers to the mass-cultural phenomenon surrounding Wilkie Collins's sensation novel "The Woman in White." By examining the two works together, this article shows that the divide between the world of fine arts and that of sensational entertainment is perhaps more entrenched in our own canons than it was for Victorian spectators and consumers.

Racial bias is associated with ingroup death rate for Blacks and Whites: Insights from Project Implicit.

PubMed

Leitner, Jordan B; Hehman, Eric; Ayduk, Ozlem; Mendoza-Denton, Rodolfo

2016-10-20

Research suggests that, among Whites, racial bias predicts negative ingroup health outcomes. However, little is known about whether racial bias predicts ingroup health outcomes among minority populations. The aim of the current research was to understand whether racial bias predicts negative ingroup health outcomes for Blacks. We compiled racial bias responses from 250,665 Blacks and 1,391,632 Whites to generate county-level estimates of Blacks' and Whites' implicit and explicit biases towards each other. We then examined the degree to which these biases predicted ingroup death rate from circulatory-related diseases. In counties where Blacks harbored more implicit bias towards Whites, Blacks died at a higher rate. Additionally, consistent with previous research, in counties where Whites harbored more explicit bias towards Blacks, Whites died at a higher rate. These links between racial bias and ingroup death rate were independent of county-level socio-demographic characteristics, and racial biases from the outgroup in the same county. Findings indicate that racial bias is related to negative ingroup health outcomes for both Blacks and Whites, though this relationship is driven by implicit bias for Blacks, and explicit bias for Whites. Copyright © 2016 Elsevier Ltd. All rights reserved.

Smoking Trends and Disparities Among Black and Non-Hispanic Whites in California

PubMed Central

Felicitas, Jamie; Fagan, Pebbles; Gruder, Charles L.; Blanco, Lyzette; Cappelli, Christopher; Trinidad, Dennis R.

2015-01-01

Objectives: The current study examined disparities in smoking trends across Blacks and non-Hispanic Whites in California. Methods: Data from the 1996 to 2008 California Tobacco Survey were analyzed to examine trends in smoking behaviors and cessation across Blacks and non-Hispanic Whites. Results: A decrease in overall ever and current smoking was observed for both Black and non-Hispanic Whites across the 12-year time period. A striking decrease in proportions of heavy daily smokers for both Black and non-Hispanic Whites were observed. Proportions of light and intermittent smokers and moderate daily smokers displayed modest increases for Blacks, but large increases for non-Hispanic Whites. Increases in successful cessation were also observed for Blacks and, to a lesser extent, for non-Hispanic Whites. Discussion: Smoking behavior and cessation trends across Blacks and non-Hispanic Whites were revealing. The decline in heavy daily and former smokers may demonstrate the success and effectiveness of tobacco control efforts in California. However, the increase in proportions of light and intermittent smokers and moderate daily smokers for both Blacks and non-Hispanic Whites demonstrates a need for tobacco cessation efforts focused on lighter smokers. PMID:25666813

Racializing white drag.

PubMed

Rhyne, Ragan

2004-01-01

While drag is primarily understood as a performance of gender, other performative categories such as race, class, and sexuality create drag meaning as well. Though other categories of identification are increasingly understood as essential elements of drag by performers of color, whiteness remains an unmarked category in the scholarship on drag performances by white queens. In this paper, I argue that drag by white queens must be understood as a performance of race as well as gender and that codes of gender excess are specifically constructed through the framework of these other axes of identity. This essay asks whether white performance by white queens necessarily reinscribes white supremacy through the performance of an unmarked white femininity, or might drag performance complicate (though not necessarily subvert) categories of race as well as gender? In this essay, I will suggest that camp drag performances, through the deployment of class as a crucial category of performative femininity, might indeed be a key site through which whiteness is denaturalized and its power challenged. Specifically, I will read on camp as a politicized mode of race, class and gender performance, focusing on the intersections of these categories of identity in the drag performance of Divine.

Social networks of adults with an intellectual disability from South Asian and White communities in the United Kingdom: A comparison.

PubMed

Bhardwaj, Anjali K; Forrester-Jones, Rachel V E; Murphy, Glynis H

2018-03-01

Little research exists comparing the social networks of people with intellectual disability (ID) from South Asian and White backgrounds. This UK study reports on the barriers that South Asian people with intellectual disability face in relation to social inclusion compared to their White counterparts. A mixed-methods research design was adopted to explore the social lives of 27 men (15 White; 12 South Asian) and 20 women (10 White; 10 South Asian with intellectual disability). Descriptive and parametric tests were used to analyse the quantitative data. The average network size of the whole group was 32 members. South Asian participants had more family members whilst White participants had more service users and staff in their networks; 96% network members from White intellectual disability group were also of White background, whilst the South Asian group had mixed ethnic network members. Social networks of individuals with intellectual disability in this study were found to be larger overall in comparison with previous studies, whilst network structure differed between the White and South Asian population. These differences have implications relating to future service planning and appropriateness of available facilities. © 2017 John Wiley & Sons Ltd.

White matter and cognition: making the connection

PubMed Central

Fields, R. Douglas

2016-01-01

Whereas the cerebral cortex has long been regarded by neuroscientists as the major locus of cognitive function, the white matter of the brain is increasingly recognized as equally critical for cognition. White matter comprises half of the brain, has expanded more than gray matter in evolution, and forms an indispensable component of distributed neural networks that subserve neurobehavioral operations. White matter tracts mediate the essential connectivity by which human behavior is organized, working in concert with gray matter to enable the extraordinary repertoire of human cognitive capacities. In this review, we present evidence from behavioral neurology that white matter lesions regularly disturb cognition, consider the role of white matter in the physiology of distributed neural networks, develop the hypothesis that white matter dysfunction is relevant to neurodegenerative disorders, including Alzheimer's disease and the newly described entity chronic traumatic encephalopathy, and discuss emerging concepts regarding the prevention and treatment of cognitive dysfunction associated with white matter disorders. Investigation of the role of white matter in cognition has yielded many valuable insights and promises to expand understanding of normal brain structure and function, improve the treatment of many neurobehavioral disorders, and disclose new opportunities for research on many challenging problems facing medicine and society. PMID:27512019

The Role of Socioeconomic Factors in Black–White Disparities in Preterm Birth

PubMed Central

Heck, Katherine; Egerter, Susan; Marchi, Kristen S.; Dominguez, Tyan Parker; Cubbin, Catherine; Fingar, Kathryn; Pearson, Jay A.; Curtis, Michael

2015-01-01

Objectives. We investigated the role of socioeconomic factors in Black–White disparities in preterm birth (PTB). Methods. We used the population-based California Maternal and Infant Health Assessment survey and birth certificate data on 10 400 US-born Black and White California residents who gave birth during 2003 to 2010 to examine rates and relative likelihoods of PTB among Black versus White women, with adjustment for multiple socioeconomic factors and covariables. Results. Greater socioeconomic advantage was generally associated with lower PTB rates among White but not Black women. There were no significant Black–White disparities within the most socioeconomically disadvantaged subgroups; Black–White disparities were seen only within more advantaged subgroups. Conclusions. Socioeconomic factors play an important but complex role in PTB disparities. The absence of Black–White disparities in PTB within certain socioeconomic subgroups, alongside substantial disparities within others, suggests that social factors moderate the disparity. Further research should explore social factors suggested by the literature—including life course socioeconomic experiences and racism-related stress, and the biological pathways through which they operate—as potential contributors to PTB among Black and White women with different levels of social advantage. PMID:25211759

The Advanced Glaucoma Intervention Study (AGIS): 3. Baseline characteristics of black and white patients.

PubMed

1998-07-01

The purpose of this report is to examine the differences at baseline in demographic, medical, and ophthalmic characteristics between blacks and whites enrolled in the Advanced Glaucoma Intervention Study (AGIS), a multicenter, randomized, clinical trial. Multicenter, randomized, controlled trial. A total of 332 black patients (451 eyes), 249 white patients (325 eyes), and 10 patients of other races (13 eyes) with open-angle glaucoma that could not be controlled by medical therapy alone participated. There was no intervention performed. The investigators compare the baseline demographic, medical, and ophthalmic characteristics of black and white patients, adjusting the comparisons for age and gender. Blacks in the study were younger than whites and had more systemic hypertension and diabetes than whites. The visual field defects of blacks on average were substantially more severe than those of whites. Intraocular pressures and visual acuity scores were similar in the two groups. Blacks were more hyperopic and had relatively fewer disk rim hemorrhages than whites. The findings of the current study concur with those of previous clinical studies of open-angle glaucoma that visual field defects are more severe in blacks than whites.

Suppression of cooling by strong magnetic fields in white dwarf stars.

PubMed

Valyavin, G; Shulyak, D; Wade, G A; Antonyuk, K; Zharikov, S V; Galazutdinov, G A; Plachinda, S; Bagnulo, S; Machado, L Fox; Alvarez, M; Clark, D M; Lopez, J M; Hiriart, D; Han, Inwoo; Jeon, Young-Beom; Zurita, C; Mujica, R; Burlakova, T; Szeifert, T; Burenkov, A

2014-11-06

Isolated cool white dwarf stars more often have strong magnetic fields than young, hotter white dwarfs, which has been a puzzle because magnetic fields are expected to decay with time but a cool surface suggests that the star is old. In addition, some white dwarfs with strong fields vary in brightness as they rotate, which has been variously attributed to surface brightness inhomogeneities similar to sunspots, chemical inhomogeneities and other magneto-optical effects. Here we describe optical observations of the brightness and magnetic field of the cool white dwarf WD 1953-011 taken over about eight years, and the results of an analysis of its surface temperature and magnetic field distribution. We find that the magnetic field suppresses atmospheric convection, leading to dark spots in the most magnetized areas. We also find that strong fields are sufficient to suppress convection over the entire surface in cool magnetic white dwarfs, which inhibits their cooling evolution relative to weakly magnetic and non-magnetic white dwarfs, making them appear younger than they truly are. This explains the long-standing mystery of why magnetic fields are more common amongst cool white dwarfs, and implies that the currently accepted ages of strongly magnetic white dwarfs are systematically too young.

Lower Orbital Frontal White Matter Integrity in Adolescents with Bipolar I Disorder

ERIC Educational Resources Information Center

Kafantaris, Vivian; Kingsley, Peter; Ardekani, Babak; Saito, Ema; Lencz, Todd; Lim, Kelvin; Szeszko, Philip

2009-01-01

Patients with bipolar I disorder demonstrated white matter abnormalities in white matter regions as seen through the use of diffusion tensor imaging. The findings suggest that white matter abnormalities in pediatric bipolar disorder may be useful in constructing neurobiological models of the disorder.

Educational Achievement and Black-White Inequality.

ERIC Educational Resources Information Center

Jacobson, Jonathan; Olsen, Cara; Rice, Jennifer King; Sweetland, Stephen; Ralph, John

2001-01-01

Explored the relationship between black-white differences in educational achievement and black-white differences in a variety of educational and economic outcomes. Three sets of analyses of data from multiple sources show that over the last two decades black-white differences in educational achievement have been strongly associated with…

Accounting for Whiteness through Collaborative Fiction

ERIC Educational Resources Information Center

Tanner, Samuel Jaye

2016-01-01

This arts-based, qualitative teacher-researcher study considers how a group of mostly white high school students worked with their white facilitators to consider whiteness using Youth Participatory Action Research in conjunction with playbuilding and drama pedagogy. First, the author locates his reflexive stance. Then, relying on critical race…

Evidence for Functional Networks within the Human Brain's White Matter.

PubMed

Peer, Michael; Nitzan, Mor; Bick, Atira S; Levin, Netta; Arzy, Shahar

2017-07-05

Investigation of the functional macro-scale organization of the human cortex is fundamental in modern neuroscience. Although numerous studies have identified networks of interacting functional modules in the gray-matter, limited research was directed to the functional organization of the white-matter. Recent studies have demonstrated that the white-matter exhibits blood oxygen level-dependent signal fluctuations similar to those of the gray-matter. Here we used these signal fluctuations to investigate whether the white-matter is organized as functional networks by applying a clustering analysis on resting-state functional MRI (RSfMRI) data from white-matter voxels, in 176 subjects (of both sexes). This analysis indicated the existence of 12 symmetrical white-matter functional networks, corresponding to combinations of white-matter tracts identified by diffusion tensor imaging. Six of the networks included interhemispheric commissural bridges traversing the corpus callosum. Signals in white-matter networks correlated with signals from functional gray-matter networks, providing missing knowledge on how these distributed networks communicate across large distances. These findings were replicated in an independent subject group and were corroborated by seed-based analysis in small groups and individual subjects. The identified white-matter functional atlases and analysis codes are available at http://mind.huji.ac.il/white-matter.aspx Our results demonstrate that the white-matter manifests an intrinsic functional organization as interacting networks of functional modules, similarly to the gray-matter, which can be investigated using RSfMRI. The discovery of functional networks within the white-matter may open new avenues of research in cognitive neuroscience and clinical neuropsychiatry. SIGNIFICANCE STATEMENT In recent years, functional MRI (fMRI) has revolutionized all fields of neuroscience, enabling identifications of functional modules and networks in the human brain. However, most fMRI studies ignored a major part of the brain, the white-matter, discarding signals from it as arising from noise. Here we use resting-state fMRI data from 176 subjects to show that signals from the human white-matter contain meaningful information. We identify 12 functional networks composed of interacting long-distance white-matter tracts. Moreover, we show that these networks are highly correlated to resting-state gray-matter networks, highlighting their functional role. Our findings enable reinterpretation of many existing fMRI datasets, and suggest a new way to explore the white-matter role in cognition and its disturbances in neuropsychiatric disorders. Copyright © 2017 the authors 0270-6474/17/376394-14$15.00/0.

The white-dwarf cooling sequence of NGC 6791: a unique tool for stellar evolution

NASA Astrophysics Data System (ADS)

García-Berro, E.; Torres, S.; Renedo, I.; Camacho, J.; Althaus, L. G.; Córsico, A. H.; Salaris, M.; Isern, J.

2011-09-01

Context. NGC 6791 is a well-studied, metal-rich open cluster that is so close to us that it can be imaged down to luminosities fainter than that of the termination of its white-dwarf cooling sequence, thus allowing for an in-depth study of its white dwarf population. Aims: White dwarfs carry important information about the history of the cluster. We use observations of the white-dwarf cooling sequence to constrain important properties of the cluster stellar population, such as the existence of a putative population of massive helium-core white dwarfs, and the properties of a large population of unresolved binary white dwarfs. We also investigate the use of white dwarfs to disclose the presence of cluster subpopulations with a different initial chemical composition, and we obtain an upper bound to the fraction of hydrogen-deficient white dwarfs. Methods: We use a Monte Carlo simulator that employs up-to-date evolutionary cooling sequences for white dwarfs with hydrogen-rich and hydrogen-deficient atmospheres, with carbon-oxygen and helium cores. The cooling sequences for carbon-oxygen cores account for the delays introduced by both 22Ne sedimentation in the liquid phase and by carbon-oxygen phase separation upon crystallization. Results: We do not find evidence for a substantial fraction of helium-core white dwarfs, and hence our results support the suggestion that the origin of the bright peak of the white-dwarf luminosity function can only be attributed to a population of unresolved binary white dwarfs. Moreover, our results indicate that if this hypothesis is at the origin of the bright peak, the number distribution of secondary masses of the population of unresolved binaries has to increase with increasing mass ratio between the secondary and primary components of the progenitor system. We also find that the observed cooling sequence appears to be able to constrain the presence of progenitor subpopulations with different chemical compositions and the fraction of hydrogen-deficient white dwarfs. Conclusions: Our simulations place interesting constraints on important characteristics of the stellar populations of NGC 6791. In particular, we find that the fraction of single helium-core white dwarfs must be smaller than 5%, that a subpopulation of stars with zero metallicity must be ≲12%, while if the adopted metallicity of the subpopulation is solar the upper limit is ~8%. Finally, we also find that the fraction of hydrogen-deficient white dwarfs in this particular cluster is surprinsingly small (≲6%).

Wide color gamut display with white and emerald backlighting.

PubMed

Duan, Lvyin; Lei, Zhichun

2018-02-20

This paper proposes a wide color gamut approach that uses white and emerald lighting units as the backlight of the liquid crystal display. The white and emerald backlights are controlled by the image to be displayed. The mixing ratio of the white and the emerald lighting is analyzed so that the maximal color gamut coverage ratio can be achieved. Experimental results prove the effectiveness of the wide color gamut approach using white and emerald backlights.

New White Dwarf-Brown Dwarf Binaries

NASA Astrophysics Data System (ADS)

Casewell, S. L.; Geier, S.; Lodieu, N.

2017-03-01

We present follow-up spectroscopy to 12 candidate white dwarf-brown dwarf binaries. We have confirmed that 8 objects do indeed have a white dwarf primary (7 DA, 1 DB) and two are hot subdwarfs. We have determined the Teff and log g for the white dwarfs and subdwarfs, and when combining these values with a model spectrum and the photometry, we have 3 probable white dwarf-substellar binaries with spectral types between M6 and L6.

Determination of sex from the hyoid bone in a contemporary White population.

PubMed

Logar, Ciara J; Peckmann, Tanya R; Meek, Susan; Walls, Stephen G

2016-04-01

Six discriminant functions, developed from an historic White population, were tested on a contemporary White population for determination of sex from the hyoid. One hundred and thirty four fused and unfused hyoids from a contemporary White population were used. Individuals ranged between 20 and 49 years old. Six historic White discriminant functions were applied to the fused and unfused hyoids of the pooled contemporary White population, i.e. all males and females and all age ranges combined. The overall accuracy rates were between 72.1% and 92.3%. Correct sex determination for contemporary White males ranged between 88.2% and 96.3%, while correct sex determination for contemporary White females ranged between 31.3% and 92.0%. Discriminant functions were created for the contemporary White population with overall mean accuracy rates between 67.0% and 93.0%. The multivariate discriminant function overall accuracy rates were between 89.0% and 93.0% and the univariate discriminant function overall accuracy rates were between 67.0% and 86.8%. The contemporary White population data were compared to other populations and showed significant differences between many of the variables measured. This study illustrated the need for population-specific and temporally-specific discriminant functions for determination of sex from the hyoid bone. Copyright © 2016 Elsevier Ltd and Faculty of Forensic and Legal Medicine. All rights reserved.

Racial Disparities in Orthodontic Service Utilization for Medicaid-Enrolled Children: An Evaluation of the Washington Medicaid Program

PubMed Central

Merritt, Jantraveus M.; Greenlee, Geoffrey; Bollen, Anne Marie; Scott, JoAnna M.; Chi, Donald L.

2016-01-01

Introduction We assess the relationship between race and orthodontic service utilization for Medicaid-enrolled children. Methods This cross-sectional study focused on 570,364 Washington Medicaid-enrolled children ages 6-19 years. The main predictor variable was self-reported race (White versus non-White). The outcome variable was orthodontic service utilization, defined as children who were pre-authorized for orthodontic treatment by Medicaid in 2012 and subsequently received orthodontic records and initiated treatment. Logistic regression models were used to test the hypothesis that non-Whites would be less likely to utilize orthodontic care than Whites. Results A total of 8,223 children were approved by Medicaid for orthodontic treatment and 7,313 received records and initiated treatment. Non-Whites were significantly more likely to utilize orthodontic care than Whites (Odds Ratio [OR]=1.18; 95% confidence interval [CI]=1.02, 1.36; p=.031). Hispanic non-White children were more likely to utilize orthodontic care than non-Hispanic White children (OR=1.42; 95% CI=1.18, 1.70; p<.001). Conclusion In 2012, non-White children in Washington Medicaid were significantly more likely to utilize orthodontic care than White children. The Washington Medicaid program demonstrates a potential model for addressing racial disparities in orthodontic service utilization. Future research should identify mechanisms underlying these findings and continue to monitor orthodontic service utilization for minority children in Medicaid. PMID:27021456

A multivariate pattern analysis study of the HIV-related white matter anatomical structural connections alterations

NASA Astrophysics Data System (ADS)

Tang, Zhenchao; Liu, Zhenyu; Li, Ruili; Cui, Xinwei; Li, Hongjun; Dong, Enqing; Tian, Jie

2017-03-01

It's widely known that HIV infection would cause white matter integrity impairments. Nevertheless, it is still unclear that how the white matter anatomical structural connections are affected by HIV infection. In the current study, we employed a multivariate pattern analysis to explore the HIV-related white matter connections alterations. Forty antiretroviraltherapy- naïve HIV patients and thirty healthy controls were enrolled. Firstly, an Automatic Anatomical Label (AAL) atlas based white matter structural network, a 90 × 90 FA-weighted matrix, was constructed for each subject. Then, the white matter connections deprived from the structural network were entered into a lasso-logistic regression model to perform HIV-control group classification. Using leave one out cross validation, a classification accuracy (ACC) of 90% (P=0.002) and areas under the receiver operating characteristic curve (AUC) of 0.96 was obtained by the classification model. This result indicated that the white matter anatomical structural connections contributed greatly to HIV-control group classification, providing solid evidence that the white matter connections were affected by HIV infection. Specially, 11 white matter connections were selected in the classification model, mainly crossing the regions of frontal lobe, Cingulum, Hippocampus, and Thalamus, which were reported to be damaged in previous HIV studies. This might suggest that the white matter connections adjacent to the HIV-related impaired regions were prone to be damaged.

White matter abnormalities of microstructure and physiological noise in schizophrenia.

PubMed

Cheng, Hu; Newman, Sharlene D; Kent, Jerillyn S; Bolbecker, Amanda; Klaunig, Mallory J; O'Donnell, Brian F; Puce, Aina; Hetrick, William P

2015-12-01

White matter abnormalities in schizophrenia have been revealed by many imaging techniques and analysis methods. One of the findings by diffusion tensor imaging is a decrease in fractional anisotropy (FA), which is an indicator of white matter integrity. On the other hand, elevation of metabolic rate in white matter was observed from positron emission tomography (PET) studies. In this report, we aim to compare the two structural and functional effects on the same subjects. Our comparison is based on the hypothesis that signal fluctuation in white matter is associated with white matter functional activity. We examined the variance of the signal in resting state fMRI and found significant differences between individuals with schizophrenia and non-psychiatric controls specifically in white matter tissue. Controls showed higher temporal signal-to-noise ratios clustered in regions including temporal, frontal, and parietal lobes, cerebellum, corpus callosum, superior longitudinal fasciculus, and other major white matter tracts. These regions with higher temporal signal-to-noise ratio agree well with those showing higher metabolic activity reported by studies using PET. The results suggest that individuals with schizophrenia tend to have higher functional activity in white matter in certain brain regions relative to healthy controls. Despite some overlaps, the distinct regions for physiological noise are different from those for FA derived from diffusion tensor imaging, and therefore provide a unique angle to explore potential mechanisms to white matter abnormality.

In vivo quantification of white matter microstructure for use in aging: a focus on two emerging techniques.

PubMed

Lamar, Melissa; Zhou, Xiaohong Joe; Charlton, Rebecca A; Dean, Douglas; Little, Deborah; Deoni, Sean C

2014-02-01

Human brain imaging has seen many advances in the quantification of white matter in vivo. For example, these advances have revealed the association between white matter damage and vascular disease as well as their impact on risk for and development of dementia and depression in an aging population. Current neuroimaging methods to quantify white matter damage provide a foundation for understanding such age-related neuropathology; however, these methods are not as adept at determining the underlying microstructural abnormalities signaling at risk tissue or driving white matter damage in the aging brain. This review will begin with a brief overview of the use of diffusion tensor imaging (DTI) in understanding white matter alterations in aging before focusing in more detail on select advances in both diffusion-based methods and multi-component relaxometry techniques for imaging white matter microstructural integrity within myelin sheaths and the axons they encase. Although DTI greatly extended the field of white matter interrogation, these more recent technological advances will add clarity to the underlying microstructural mechanisms that contribute to white matter damage. More specifically, the methods highlighted in this review may prove more sensitive (and specific) for determining the contribution of myelin versus axonal integrity to the aging of white matter in brain. Copyright © 2014 American Association for Geriatric Psychiatry. Published by Elsevier Inc. All rights reserved.

Effects of exercise on capillaries in the white matter of transgenic AD mice

PubMed Central

Zhang, Yi; Chao, Feng-Lei; Zhou, Chun-Ni; Jiang, Lin; Zhang, Lei; Chen, Lin-Mu; Luo, Yan-Min; Xiao, Qian; Tang, Yong

2017-01-01

Previous studies have shown that exercise can prevent white matter atrophy in APP/PS1 transgenic Alzheimer’s disease (AD) mice. However, the mechanism of this protective effect remains unknown. To further understand this issue, we investigated the effects of exercise on the blood supply of white matter in transgenic AD mice. Six-month-old male APP/PS1 mice were randomly divided into a control group and a running group, and age-matched non-transgenic littermates were used as a wild-type control group. Mice in the running group ran on a treadmill at low intensity for four months. Then, spatial learning and memory abilities, white matter and white matter capillaries were examined in all mice. The 10-month-old AD mice exhibited deficits in cognitive function, and 4 months of exercise improved these deficits. The white matter volume and the total length, total volume and total surface area of the white matter capillaries were decreased in the 10-month-old AD mice, and 4 months of exercise dramatically delayed the changes in these parameters in the AD mice. Our results demonstrate that even low-intensity running exercise can improve spatial learning and memory abilities, delay white matter atrophy and protect white matter capillaries in early-stage AD mice. Protecting capillaries might be an important structural basis for the exercise-induced protection of the structural integrity of white matter in AD. PMID:29029478

Effects of exercise on capillaries in the white matter of transgenic AD mice.

PubMed

Zhang, Yi; Chao, Feng-Lei; Zhou, Chun-Ni; Jiang, Lin; Zhang, Lei; Chen, Lin-Mu; Luo, Yan-Min; Xiao, Qian; Tang, Yong

2017-09-12

Previous studies have shown that exercise can prevent white matter atrophy in APP/PS1 transgenic Alzheimer's disease (AD) mice. However, the mechanism of this protective effect remains unknown. To further understand this issue, we investigated the effects of exercise on the blood supply of white matter in transgenic AD mice. Six-month-old male APP/PS1 mice were randomly divided into a control group and a running group, and age-matched non-transgenic littermates were used as a wild-type control group. Mice in the running group ran on a treadmill at low intensity for four months. Then, spatial learning and memory abilities, white matter and white matter capillaries were examined in all mice. The 10-month-old AD mice exhibited deficits in cognitive function, and 4 months of exercise improved these deficits. The white matter volume and the total length, total volume and total surface area of the white matter capillaries were decreased in the 10-month-old AD mice, and 4 months of exercise dramatically delayed the changes in these parameters in the AD mice. Our results demonstrate that even low-intensity running exercise can improve spatial learning and memory abilities, delay white matter atrophy and protect white matter capillaries in early-stage AD mice. Protecting capillaries might be an important structural basis for the exercise-induced protection of the structural integrity of white matter in AD.

"The normative idea of queer is a white person": understanding perceptions of white privilege among lesbian, bisexual, and queer women of color in Toronto, Canada.

PubMed

Logie, Carmen H; Rwigema, Marie-Jolie

2014-01-01

White privilege constructs whiteness as normative and central to lesbian, gay, bisexual, and queer (LGBQ) identities and is reproduced through social norms, media representations, and daily interactions. We aimed to enhance understanding of the processes by which white privilege was experienced among lesbian, bisexual, and queer (LBQ) women of color in Toronto, Canada. We conducted two focus groups with LBQ women of color, one with participants who self-identified as masculine of center (n = 8) and the second with participants who identified as feminine of center (n = 8). Findings indicate that LBQ women of color experience intersectional stigma (e.g., homophobia, racism, sexism) on a daily basis. Participant narratives revealed that white privilege shaped the representations of women of color in a particular way that promoted their exclusion from white LBQ spaces and broader society. By representing queerness as white, LBQ women of color were rendered invisible in both queer and racialized communities. LBQ women of color were further marginalized by constructions of "real" women as passive, feminine and white, and conversely perceptions of women of color as aggressive, emotional, and hypersexualized. These representations inform spatialized practices and social interactions through constructing racialized communities as discriminatory and "backwards" while maintaining the invisibility of white privilege and racism in LBQ spaces.

An unusual neuroimaging finding and response to immunotherapy in a child with genetically confirmed vanishing white matter disease.

PubMed

Singh, Rahul Raman; Livingston, John; Lim, Ming; Berry, Ian R; Siddiqui, Ata

2017-03-01

We present an unusual neuroimaging finding in a young girl with genetically confirmed vanishing white matter disease and a possible response to immunotherapy. 2.5 yr old girl, presented with acute onset unsteadiness and encephalopathy following a viral illness. MRI showed global symmetric white matter abnormality, with symmetric enhancement of cranial nerves (III and V) and of cervical and lumbar roots. She received immunotherapy for her encephalopathic illness with white matter changes. Follow up neuroimaging showed resolution of white matter edema and resolution of the change in the brainstem. Genetic testing confirmed a diagnosis of vanishing white matter disease (VWMD). Craniospinal nerve enhancement and possible response to immunotherapy has not been described in vanishing white matter disease. Crown Copyright © 2016. Published by Elsevier Ltd. All rights reserved.

Continuing the conversation in nursing on race and racism.

PubMed

Hall, Joanne M; Fields, Becky

2013-01-01

Nursing values include diversity and a commitment to the elimination of health disparities. However, nursing comprises predominantly white, female nurses. The authors explore structural and interpersonal sources of disparities experienced by black persons, including white privilege. Here, the authors advocate for a continuation of the racism conversation, specifically among white nurses. Racial disadvantages stem from structural inequalities from daily slights, and usually unintended subtle racism toward black people on the part of white people, including white nurses. By raising consciousness on how we propagate subtle racism, nursing can progress faster in eliminating health disparities. Topics include postracialism, colorblindness, institutional racism, white privilege, health disparities, clinical encounters, subtle racism, and racial microaggressions. Suggestions for open dialogue, historical awareness, education, research, and practice are highlighted. Difficulties involved in confronting racism and white privilege are explored. Copyright © 2013 Elsevier Inc. All rights reserved.

A Refined Search for Pulsations in White Dwarf Companions to Millisecond Pulsars

NASA Astrophysics Data System (ADS)

Kilic, Mukremin; Hermes, J. J.; Córsico, A. H.; Kosakowski, Alekzander; Brown, Warren R.; Antoniadis, John; Calcaferro, Leila M.; Gianninas, A.; Althaus, Leandro G.; Green, M. J.

2018-06-01

We present optical high-speed photometry of three millisecond pulsars with low-mass (<0.3 M⊙) white dwarf companions, bringing the total number of such systems with follow-up time-series photometry to five. We confirm the detection of pulsations in one system, the white dwarf companion to PSR J1738+0333, and show that the pulsation frequencies and amplitudes are variable over many months. A full asteroseismic analysis for this star is under-constrained, but the mode periods we observe are consistent with expectations for a M⋆ = 0.16 - 0.19M⊙ white dwarf, as suggested from spectroscopy. We also present the empirical boundaries of the instability strip for low-mass white dwarfs based on the full sample of white dwarfs, and discuss the distinction between pulsating low-mass white dwarfs and subdwarf A/F stars.

Black and white girls' racial preferences in media and peer choices and the role of socialization for black girls.

PubMed

O'Connor, L A; Brooks-Gunn, J; Graber, J

2000-09-01

This exploratory research compared Black and White girls' racial preferences as exhibited through their media (music and television) and peer choices. The sample included 140 8- and 9-year-old Black and White girls of various socioeconomic levels. Findings suggested that both Black and White girls have more Black music preferences than White or no-race music preferences. Also, both Black and White girls made more White television program choices than Black or no-race choices. In their peer selections, all girls preferred same-race peers. Black mothers who engaged in racial socialization practices had girls who were more likely to prefer Black music and television to the other categories. Further, Black mothers who promoted more cultural distance and mothers who were poor had girls with more same-race peer preferences.

White Privilege in a White Coat: How Racism Shaped my Medical Education.

PubMed

Romano, Max J

2018-05-01

In this essay, I reflect on some of the ways racial privilege influenced my experience as a white physician in training. While white Americans often think of "racism" as a social construct primarily affecting people of color, "racism" is a system of both racial disadvantage as well as reciprocal racial advantage. Medical professionals are increasingly aware of how social determinants of health lead to important health disparities, however white physicians seldom ask how their own racial privilege reinforces a white supremacist culture and what effects this may have on our patients' health. Drawing attention to the powerful legacy of racial discrimination in medical institutions, I call on other white physicians to name their privilege in order to dismantle the systems that propagate racism in our profession. © 2018 Annals of Family Medicine, Inc.

Reduction in recruitment of white bass in Lake Erie after invasion of white perch

USGS Publications Warehouse

Madenjian, Charles P.; Knight, Roger L.; Bur, Michael; Forney, John L.

2000-01-01

Recruitment to the adult population of white bass Morone chrysops in Lake Erie sharply declined during the early 1980s. To explain this phenomenon, we formulated the following four hypotheses: (1) the biological characteristics of adult spawners changed during the early 1980s, so that the ability to produce eggs decreased; (2) the decrease in phosphorus loadings to Lake Erie during the 1970s resulted in a lower abundance of crustacean zooplankton and thus in reduced survival of age-0 white bass; (3) the increase in the population of adult walleyes Stizostedion vitreum in Lake Erie during the 1970s and 1980s led to reduced survival of age-0 white bass; and (4) establishment of the white perch Morone americana population in Lake Erie during the early 1980s led to reduced survival of the early life stages of white bass. The growth, maturity, and fecundity of adults during the period 1981-1997 were compared with the same characteristics found by earlier studies. The mean length, weight, and condition factors that we calculated were higher than those reported for Lake Erie in 1927-1929 for all age groups examined, and white bass in Lake Erie matured at an earlier age during 1981-1997 than during 1927-1929. Fecundity estimates ranged from 128,897 to 1,049,207 eggs/female and were similar to estimates from other populations. Therefore, the first hypothesis was rejected. With respect to the second hypothesis, zooplankton surveys conducted during 1970 and 1983-1987 indicated that the abundance of crustacean zooplankton in Lake Erie did not change between the two time periods. However, these results were not conclusive because only a single-year survey was conducted before 1980. Based on walleye diet studies and estimates of walleye population size, walleye predation pressure on age-0 white bass in Lake Erie during 1986-1988 was just slightly higher than that during 1979-1981. Thus, such pressure can explain only a minor portion of the reduction in white bass recruitment. To test the fourth hypothesis, intervention analysis was applied to the long-term abundance series for white bass. The abundance of age-0 white bass in Lake Erie between 1982 and 1997 was significantly lower than that between 1969 and 1981. The catch per unit effort of adult white bass in commercial trap nets between 1987 and 1997 was significantly lower than it was before 1987. Moreover, the period of reduced recruitment for white bass in Oneida Lake, New York, which extends from 1955 to the present, coincides with occupation of the lake by white perch. Thus, of the four hypotheses entertained, the most plausible explanation for the reduction in white bass recruitment in Lake Erie is that white perch reduced the survival of white bass during its early life history.

Effect of race/ethnicity on clinical presentation and risk of gestational trophoblastic neoplasia in patients with complete and partial molar pregnancy at a tertiary care referral center.

PubMed

Gockley, Allison A; Joseph, Naima T; Melamed, Alexander; Sun, Sue Yazaki; Goodwin, Benjamin; Bernstein, Marilyn; Goldstein, Donald P; Berkowitz, Ross S; Horowitz, Neil S

2016-09-01

The reported incidence of molar pregnancy varies widely among different geographic locations. This variation has been attributed, at least in part, to racial/ethnic differences. While the incidence of molar pregnancies is decreasing, certain ethnic groups such as Hispanics, Asians, and American Indians continue to have an increased risk of developing gestational trophoblastic disease across the globe. We sought to describe the potential effect of ethnicity/race on the presentation and clinical course of complete mole and partial mole. All patients followed up for complete mole and partial mole at a single institution referral center from 1994 through 2013 were identified. Variables including age, race, gravidity, parity, gestational age, presenting signs/symptoms, serum human chorionic gonadotropin values, and development of gestational trophoblastic neoplasia were extracted from medical records and patient surveys. Patients with complete mole and partial mole were categorized into race/ethnicity groups defined as white, black, Asian, or Hispanic. Due to low numbers of non-white patients with partial mole in each non-white category, patients with partial mole were grouped as white or non-white. Continuous variables were compared using the Kruskal-Wallis test and binary variables were compared using the Fisher exact test. A total of 167 complete mole patients with known race/ethnicity status were included (57.48% white, 14.97% Asian, 14.37% black, 13.17% Hispanic). Hispanics presented at younger age (median 24.5 years) compared to whites (median 32.0 years, P = .04) and Asians (median 31.0 years, P = .03). Blacks had higher gravidity than whites (P < .001) and Hispanics (P = .05). There was no significant difference in presenting symptoms, gestational age at diagnosis, and preevacuation serum human chorionic gonadotropin level by race/ethnicity. Hispanics were significantly less likely than whites to develop gestational trophoblastic neoplasia (absolute risk difference, 28.6%; 95% confidence interval, 8.1-39.2%; P = .02). A total of 144 patients with partial mole were analyzed. There were 108 white and 36 non-white patients. Median age was 31 years for white and 29 years for non-white patients (P = .006). Median gravidity was 2 for white and 3 for non-white patients (P < .001), and median parity was 0 for white patients and 1 for non-white patients (P = .003). There were no significant differences with respect to presenting signs and symptoms, gestational age, preevacuation human chorionic gonadotropin level, or risk of progression to gestational trophoblastic neoplasia. Hispanic patients with complete molar pregnancy had a significantly lower risk of developing gestational trophoblastic neoplasia than white patients. There were no significant differences among groups in terms of presenting symptoms, gestational age at diagnosis, or preevacuation human chorionic gonadotropin levels for either complete mole or partial mole patients. Copyright © 2016. Published by Elsevier Inc.

Interactive Effects of Southern Rice Black-Streaked Dwarf Virus Infection of Host Plant and Vector on Performance of the Vector, Sogatella furcifera (Homoptera: Delphacidae).

PubMed

Lei, Wenbin; Liu, Danfeng; Li, Pei; Hou, Maolin

2014-10-01

Performance of insect vectors can be influenced by the viruses they transmit, either directly by infection of the vectors or indirectly via infection of the host plants. Southern rice black-streaked dwarf virus (SRBSDV) is a propagative virus transmitted by the white-backed planthopper, Sogatella furcifera (Hovath). To elucidate the influence of SRBSDV on the performance of white-backed planthopper, life parameters of viruliferous and nonviruliferous white-backed planthopper fed rice seedlings infected or noninfected with SRBSDV were measured using a factorial design. Regardless of the infection status of the rice plant host, viruliferous white-backed planthopper nymphs took longer to develop from nymph to adult than did nonviruliferous nymphs. Viruliferous white-backed planthopper females deposited fewer eggs than nonviruliferous females and both viruliferous and nonviruliferous white-backed planthopper females laid fewer eggs on infected than on noninfected plants. Longevity of white-backed planthopper females was also affected by the infection status of the rice plant and white-backed planthopper. Nonviruliferous white-backed planthopper females that fed on infected rice plants lived longer than the other three treatment groups. These results indicate that the performance of white-backed planthopper is affected by SRBSDV either directly (by infection of white-backed planthopper) or indirectly (by infection of rice plant). The extended development of viruliferous nymphs and the prolonged life span of nonviruliferous adults on infected plants may increase their likelihood of transmitting virus, which would increase virus spread. © 2014 Entomological Society of America.

White matter damage is related to ataxia severity in SCA3.

PubMed

Kang, J-S; Klein, J C; Baudrexel, S; Deichmann, R; Nolte, D; Hilker, R

2014-02-01

Spinocerebellar ataxia type 3 (SCA3) is the most frequent inherited cerebellar ataxia in Europe, the US and Japan, leading to disability and death through motor complications. Although the affected protein ataxin-3 is found ubiquitously in the brain, grey matter atrophy is predominant in the cerebellum and the brainstem. White matter pathology is generally less severe and thought to occur in the brainstem, spinal cord, and cerebellar white matter. Here, we investigated both grey and white matter pathology in a group of 12 SCA3 patients and matched controls. We used voxel-based morphometry for analysis of tissue loss, and tract-based spatial statistics (TBSS) on diffusion magnetic resonance imaging to investigate microstructural pathology. We analysed correlations between microstructural properties of the brain and ataxia severity, as measured by the Scale for the Assessment and Rating of Ataxia (SARA) score. SCA3 patients exhibited significant loss of both grey and white matter in the cerebellar hemispheres, brainstem including pons and in lateral thalamus. On between-group analysis, TBSS detected widespread microstructural white matter pathology in the cerebellum, brainstem, and bilaterally in thalamus and the cerebral hemispheres. Furthermore, fractional anisotropy in a white matter network comprising frontal, thalamic, brainstem and left cerebellar white matter strongly and negatively correlated with SARA ataxia scores. Tractography identified the thalamic white matter thus implicated as belonging to ventrolateral thalamus. Disruption of white matter integrity in patients suffering from SCA3 is more widespread than previously thought. Moreover, our data provide evidence that microstructural white matter changes in SCA3 are strongly related to the clinical severity of ataxia symptoms.

Long-term white matter tract reorganization following prolonged febrile seizures.

PubMed

Pujar, Suresh S; Seunarine, Kiran K; Martinos, Marina M; Neville, Brian G R; Scott, Rod C; Chin, Richard F M; Clark, Chris A

2017-05-01

Diffusion magnetic resonance imaging (MRI) studies have demonstrated acute white matter changes following prolonged febrile seizures (PFS), but their longer-term evolution is unknown. We investigated a population-based cohort to determine white matter diffusion properties 8 years after PFS. We used diffusion tensor imaging (DTI) and applied Tract-Based Spatial Statistics for voxel-wise comparison of white matter microstructure between 26 children with PFS and 27 age-matched healthy controls. Age, gender, handedness, and hippocampal volumes were entered as covariates for voxel-wise analysis. Mean duration between the episode of PFS and follow-up was 8.2 years (range 6.7-9.6). All children were neurologically normal, and had normal conventional neuroimaging. On voxel-wise analysis, compared to controls, the PFS group had (1) increased fractional anisotropy in early maturing central white matter tracts, (2) increased mean and axial diffusivity in several peripheral white matter tracts and late-maturing central white matter tracts, and (3) increased radial diffusivity in peripheral white matter tracts. None of the tracts had reduced fractional anisotropy or diffusivity indices in the PFS group. In this homogeneous, population-based sample, we found increased fractional anisotropy in early maturing central white matter tracts and increased mean and axial diffusivity with/without increased radial diffusivity in several late-maturing peripheral white matter tracts 8 years post-PFS. We propose disruption in white matter maturation secondary to seizure-induced axonal injury, with subsequent neuroplasticity and microstructural reorganization as a plausible explanation. © 2017 The Authors. Epilepsia published by Wiley Periodicals, Inc. on behalf of International League Against Epilepsy.

Cortex Parcellation Associated Whole White Matter Parcellation in Individual Subjects.

PubMed

Schiffler, Patrick; Tenberge, Jan-Gerd; Wiendl, Heinz; Meuth, Sven G

2017-01-01

The investigation of specific white matter areas is a growing field in neurological research and is typically achieved through the use of atlases. However, the definition of anatomically based regions remains challenging for the white matter and thus hinders region-specific analysis in individual subjects. In this article, we focus on creating a whole white matter parcellation method for individual subjects where these areas can be associated to cortex regions. This is done by combining cortex parcellation and fiber tracking data. By tracking fibers out of each cortex region and labeling the fibers according to their origin, we populate a candidate image. We then derive the white matter parcellation by classifying each white matter voxel according to the distribution of labels in the corresponding voxel from the candidate image. The parcellation of the white matter with the presented method is highly reliable and is not as dependent on registration as with white matter atlases. This method allows for the parcellation of the whole white matter into individual cortex region associated areas and, therefore, associates white matter alterations to cortex regions. In addition, we compare the results from the presented method to existing atlases. The areas generated by the presented method are not as sharply defined as the areas in most existing atlases; however, they are computed directly in the DWI space of the subject and, therefore, do not suffer from distortion caused by registration. The presented approach might be a promising tool for clinical and basic research to investigate modalities or system specific micro structural alterations of white matter areas in a quantitative manner.

Connectivity-driven white matter scaling and folding in primate cerebral cortex

PubMed Central

Herculano-Houzel, Suzana; Mota, Bruno; Kaas, Jon H.

2010-01-01

Larger brains have an increasingly folded cerebral cortex whose white matter scales up faster than the gray matter. Here we analyze the cellular composition of the subcortical white matter in 11 primate species, including humans, and one Scandentia, and show that the mass of the white matter scales linearly across species with its number of nonneuronal cells, which is expected to be proportional to the total length of myelinated axons in the white matter. This result implies that the average axonal cross-section area in the white matter, a, does not scale significantly with the number of neurons in the gray matter, N. The surface area of the white matter increases with N0.87, not N1.0. Because this surface can be defined as the product of N, a, and the fraction n of cortical neurons connected through the white matter, we deduce that connectivity decreases in larger cerebral cortices as a slowly diminishing fraction of neurons, which varies with N−0.16, sends myelinated axons into the white matter. Decreased connectivity is compatible with previous suggestions that neurons in the cerebral cortex are connected as a small-world network and should slow down the increase in global conduction delay in cortices with larger numbers of neurons. Further, a simple model shows that connectivity and cortical folding are directly related across species. We offer a white matter-based mechanism to account for increased cortical folding across species, which we propose to be driven by connectivity-related tension in the white matter, pulling down on the gray matter. PMID:20956290

Cortex Parcellation Associated Whole White Matter Parcellation in Individual Subjects

PubMed Central

Schiffler, Patrick; Tenberge, Jan-Gerd; Wiendl, Heinz; Meuth, Sven G.

2017-01-01

The investigation of specific white matter areas is a growing field in neurological research and is typically achieved through the use of atlases. However, the definition of anatomically based regions remains challenging for the white matter and thus hinders region-specific analysis in individual subjects. In this article, we focus on creating a whole white matter parcellation method for individual subjects where these areas can be associated to cortex regions. This is done by combining cortex parcellation and fiber tracking data. By tracking fibers out of each cortex region and labeling the fibers according to their origin, we populate a candidate image. We then derive the white matter parcellation by classifying each white matter voxel according to the distribution of labels in the corresponding voxel from the candidate image. The parcellation of the white matter with the presented method is highly reliable and is not as dependent on registration as with white matter atlases. This method allows for the parcellation of the whole white matter into individual cortex region associated areas and, therefore, associates white matter alterations to cortex regions. In addition, we compare the results from the presented method to existing atlases. The areas generated by the presented method are not as sharply defined as the areas in most existing atlases; however, they are computed directly in the DWI space of the subject and, therefore, do not suffer from distortion caused by registration. The presented approach might be a promising tool for clinical and basic research to investigate modalities or system specific micro structural alterations of white matter areas in a quantitative manner. PMID:28729829

The Abandonment of Hope: Curriculum Theory and White Moral Responsibility

ERIC Educational Resources Information Center

Maudlin, Julie Garlen

2014-01-01

In this article, I suggest that an ideology of hope, even "educated" (Giroux, 2003) and "radical" (Farley, 2009) conceptualizations, might be problematic for curriculum theory because it operates to reinscribe White privilege and perpetuate the assumption that Whites can transcend the critique of Whiteness (Applebaum, 2010).…

Emotions and White Racial Identity Status Attitudes

ERIC Educational Resources Information Center

Siegel, Matthew P.; Carter, Robert T.

2014-01-01

Relationships between emotional states and White racial identity status attitudes (Helms, 1984, 1990) were tested on a sample of 286 White students. The stimulus was a vignette in which one condition involved explicit racial information and one did not. Participants rated baseline and posttest emotions and completed the White Racial Identity…

White Faculty Transforming Whiteness in the Classroom through Pedagogical Practice

ERIC Educational Resources Information Center

Charbeneau, Jessica

2015-01-01

The primary objective of this qualitative study is to present a conceptual framework of pedagogical practices reported by white faculty that serve to challenge the hegemony of whiteness in the university classroom. These transformative teaching practices surfaced through a review of racialized pedagogies discussed in the literature and in…

Multiculturalism, Teaching Slavery, and White Supremacy

ERIC Educational Resources Information Center

Bery, Sadhana

2014-01-01

This article argues that multiculturalism, especially when it is led and controlled by Whites, and in the absence of collective anti-racist struggles, can reproduce the ontologies, epistemologies, and practices of white supremacy. I use a case study of a reenactment of Atlantic black slavery, produced by white teachers to investigate whether…

The Faces of Whiteness: Pitfalls and the Critical Democrat

ERIC Educational Resources Information Center

Warren, John; Hytten, Kathy

2004-01-01

This essay stems from previously reported critical ethnographic data regarding educators participating in graduate-level classes on whiteness. The metaphor of "faces of whiteness" is adopted here to signify that individuals occupy particular stances toward White privilege and its consequences in a dynamic and nonlinear fashion. The Torpified face…

Digital Storytelling as Racial Justice: Digital Hopes for Deconstructing Whiteness in Teacher Education

ERIC Educational Resources Information Center

Matias, Cheryl E.; Grosland, Tanetha J.

2016-01-01

Teacher education is replete with an overwhelming presence of Whiteness, a presence that if not explicitly interrogated indefinitely recycles hegemonic Whiteness. Needed are pedagogical strategies that expose the hegemonic invisibility of Whiteness. This critical reflection examines the utilization of digital storytelling by teacher educators of…

50 CFR 21.44 - Depredation order for horned larks, house finches, and white-crowned sparrows in California.

Code of Federal Regulations, 2014 CFR

2014-10-01

... finches, and white-crowned sparrows in California. 21.44 Section 21.44 Wildlife and Fisheries UNITED... larks, house finches, and white-crowned sparrows in California. Horned larks (Eremophila alpestris), house finches (Carpodacus mexicanus), and white-crowned sparrows (Zonotrichia leucophrys) may be taken...

49 CFR 173.216 - Asbestos, blue, brown or white.

Code of Federal Regulations, 2013 CFR

2013-10-01

... 49 Transportation 2 2013-10-01 2013-10-01 false Asbestos, blue, brown or white. 173.216 Section... Class 7 § 173.216 Asbestos, blue, brown or white. (a) Asbestos, blue, brown or white, includes each of the following hydrated mineral silicates: chrysolite, crocidolite, amosite, anthophyllite asbestos...

49 CFR 173.216 - Asbestos, blue, brown or white.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 49 Transportation 2 2010-10-01 2010-10-01 false Asbestos, blue, brown or white. 173.216 Section... Class 7 § 173.216 Asbestos, blue, brown or white. (a) Asbestos, blue, brown or white, includes each of the following hydrated mineral silicates: chrysolite, crocidolite, amosite, anthophyllite asbestos...

49 CFR 173.216 - Asbestos, blue, brown or white.

Code of Federal Regulations, 2011 CFR

2011-10-01

... 49 Transportation 2 2011-10-01 2011-10-01 false Asbestos, blue, brown or white. 173.216 Section... Class 7 § 173.216 Asbestos, blue, brown or white. (a) Asbestos, blue, brown or white, includes each of the following hydrated mineral silicates: chrysolite, crocidolite, amosite, anthophyllite asbestos...

49 CFR 173.216 - Asbestos, blue, brown or white.

Code of Federal Regulations, 2012 CFR

2012-10-01

... 49 Transportation 2 2012-10-01 2012-10-01 false Asbestos, blue, brown or white. 173.216 Section... Class 7 § 173.216 Asbestos, blue, brown or white. (a) Asbestos, blue, brown or white, includes each of the following hydrated mineral silicates: chrysolite, crocidolite, amosite, anthophyllite asbestos...

49 CFR 173.216 - Asbestos, blue, brown or white.

Code of Federal Regulations, 2014 CFR

2014-10-01

... 49 Transportation 2 2014-10-01 2014-10-01 false Asbestos, blue, brown or white. 173.216 Section... Class 7 § 173.216 Asbestos, blue, brown or white. (a) Asbestos, blue, brown or white, includes each of the following hydrated mineral silicates: chrysolite, crocidolite, amosite, anthophyllite asbestos...

49 CFR 172.330 - Tank cars and multi-unit tank car tanks.

Code of Federal Regulations, 2010 CFR

2010-10-01

... Hydrogen peroxide and peroxyacetic acid mixtures Nitric acid (other than red fuming) Phosphorus, amorphous Phosphorus, white dry or Phosphorus, white, under water or Phosphorus white, in solution, or Phosphorus, yellow dry or Phosphorus, yellow, under water or Phosphorus, yellow, in solution Phosphorus white, molten...

49 CFR 172.330 - Tank cars and multi-unit tank car tanks.

Code of Federal Regulations, 2011 CFR

2011-10-01

... Hydrogen peroxide and peroxyacetic acid mixtures Nitric acid (other than red fuming) Phosphorus, amorphous Phosphorus, white dry or Phosphorus, white, under water or Phosphorus white, in solution, or Phosphorus, yellow dry or Phosphorus, yellow, under water or Phosphorus, yellow, in solution Phosphorus white, molten...

Vanishing White Matter Disease: A Review with Focus on Its Genetics

ERIC Educational Resources Information Center

Pronk, Jan C.; van Kollenburg, Barbara; Scheper, Gert C.; van der Knaap, Marjo S.

2006-01-01

Leukoencephalopathy with vanishing white matter (VWM) is an autosomal recessive brain disorder, most often with a childhood onset. Magnetic resonance imaging and spectroscopy indicate that, with time, increasing amounts of cerebral white matter vanish and are replaced by fluid. Autopsy confirms white matter rarefaction and cystic degeneration. The…

Educational Achievement and Black-White Inequality. Statistical Analysis Report.

ERIC Educational Resources Information Center

Jacobson, Jonathan; Olsen, Cara; Rice, Jennifer King; Sweetland, Stephen

This study explored relationships between black-white differences in educational achievement and black-white differences in various educational and economic outcomes. Three data sets examined the extent to which black-white differences in labor market outcomes, in educational attainment, and in mathematics and reading achievement were present for…

36 CFR 1260.22 - Who is responsible for the declassification of classified national security White House...

Code of Federal Regulations, 2012 CFR

2012-07-01

... declassification of classified national security White House originated information in NARA's holdings? 1260.22... for the declassification of classified national security White House originated information in NARA's... was originated by: (1) The President and Vice President; (2) The White House staff; (3) Committees...

36 CFR 1260.22 - Who is responsible for the declassification of classified national security White House...

Code of Federal Regulations, 2014 CFR

2014-07-01

... declassification of classified national security White House originated information in NARA's holdings? 1260.22... for the declassification of classified national security White House originated information in NARA's... was originated by: (1) The President and Vice President; (2) The White House staff; (3) Committees...

A Structural Decomposition of Black-White Earnings Differentials.

ERIC Educational Resources Information Center

Kaufman, Robert L.

1983-01-01

Two factors which create differences in Black-White earnings are: (1) differentials between Blacks and Whites within divisions of the labor market; and (2) differences between industries and occupations in earnings, combined with the differential distribution of Blacks and Whites across labor market divisions. The labor market structure is crucial…

36 CFR 1260.22 - Who is responsible for the declassification of classified national security White House...

Code of Federal Regulations, 2010 CFR

2010-07-01

... declassification of classified national security White House originated information in NARA's holdings? 1260.22... for the declassification of classified national security White House originated information in NARA's... was originated by: (1) The President; (2) The White House staff; (3) Committees, commissions, or...

36 CFR 1260.22 - Who is responsible for the declassification of classified national security White House...

Code of Federal Regulations, 2011 CFR

2011-07-01

... declassification of classified national security White House originated information in NARA's holdings? 1260.22... for the declassification of classified national security White House originated information in NARA's... was originated by: (1) The President; (2) The White House staff; (3) Committees, commissions, or...

77 FR 65840 - Chrysanthemum White Rust Regulatory Status and Restrictions

Federal Register 2010, 2011, 2012, 2013, 2014

2012-10-31

... Inspection Service 7 CFR Part 319 [Docket No. APHIS-2012-0001] RIN 0579-AD67 Chrysanthemum White Rust... should amend our process for responding to domestic chrysanthemum white rust (CWR) outbreaks and the... whether and how we should amend our process for responding to domestic chrysanthemum white rust (CWR...

White Privilege and Multicultural Counseling Competence: The Influence of Field of Study, Sex, and Racial/Ethnic Exposure

ERIC Educational Resources Information Center

Mindrup, Robert M.; Spray, Beverly J.; Lamberghini-West, Alicia

2011-01-01

This study explores the association between white privilege attitudes and multicultural counseling competencies among white European-American graduate students (N = 298) in clinical psychology and social work. Results revealed a significant positive association between white privilege attitudes and multicultural counseling competencies. Social…

A Rebuttal to Jack Niemonen's "Whither the White Working Class?"

ERIC Educational Resources Information Center

Khanna, Nikki; Harris, Cherise A.

2015-01-01

Prof. Niemonen claims that the concept of white privilege is "anti-sociological" and "mask[s] complex race-class interactions." He highlights the importance of including social class in discussions of white privilege but focuses exclusively on the white working class, neglecting how race and social class also intersect for…

PREFACE: 16th European White Dwarfs Workshop

NASA Astrophysics Data System (ADS)

Garcia-Berro, Enrique; Hernanz, Margarita; Isern, Jordi; Torres, Santiago

2009-07-01

The 16th European Workshop on White Dwarfs was held in Barcelona, Spain, from 30 June to 4 July 2008 at the premises of the UPC. Almost 120 participants from Europe (France, Germany, United Kingdom, Italy, and several others), America (USA, Canada, Argentina, Brazil, and Chile), and other continents (Australia, South Africa, . . . ) attended the workshop. Among these participants were the most relevant specialists in the field. The topics covered by the conference were: White dwarf structure and evolution Progenitors and Planetary Nebulae White dwarfs in binaries: cataclysmic variables, double degenerates and other binaries White dwarfs, dust disks and planetary systems Atmospheres, chemical composition, magnetic fields Variable white dwarfs White dwarfs in stellar clusters and the halo White Dwarfs as SNIa progenitors The programme included 54 talks, and 45 posters. The oral presentations were distributed into the following sessions: Luminosity function, mass function and populations White dwarf structure and evolution White dwarf ages White dwarf catalogs and surveys Central stars of planetary nebulae Supernovae progenitors White dwarfs in novae and CVs Physical processes in white dwarfs and magnetic white dwarfs Disks, dust and planets around white dwarfs Pulsating white dwarfs Additionally we had a special open session about Spitzer and white dwarfs. The Proceedings of the 16th European Workshop on White Dwarfs are representative of the current state-of-the-art of the research field and include new and exciting results. We acknowledge the very positive attitude of the attendants to the workshop, which stimulated very fruitful discussions that took place in all the sessions and after the official schedule. Also, the meeting allowed new collaborations tp start that will undoubtedly result in significant advances in the research field. We also acknowledge the willingness of the participants to deliver their contributions before the final deadline. We sincerely thank them. The white dwarf community has been steadily growing since the first white dwarf workshop, held in Kiel (Germany) in 1974. Some of the participants in the first colloquium have already effectively retired; others - although officially retired - continue to attend successive workshops, Professor Weidemann, one of the first organizers, being a leading example. We hope we will be able to continue counting on them for many years. A very graphical view of the evolution of the field can be found in the homepage of Professor Detlev Koester, who has collected pictures of almost all the previous workshops:. Additionally, several astronomers coming from related fields have joined our (not so) small community. Most importantly, several generations of young scientists gave their first talks in these workshops. In summary our community is an active one, and we have close, durable and solid ties of friendship. We are optimistic and we foresee that the spirit of the previous workshops will continue in future editions. We would like to express our deepest gratitude to our sponsors: The Universitat Politècnica de Catalunya (UPC), the Institut de Ciències de l'Espai (CSIC), the Institute for Space Studies of Catalonia (IEEC), the Spanish Ministry of Education and Science, the Generalitat de Catalunya, the Ajuntament de Barcelona, the School of Civil Engineering of Barcelona and UPCnet. Finally, the IEEC staff and our graduate students have enthusiastically supported the organization of the workshop in every single detail; without them we would have not succeeded. We thank them especially. Also, we acknowledge the task of the Scientific Organizing Committee, which gave their full support in all the scientific tasks. Enrique García-Berro, UPC Margarida Hernanz, ICE (CSIC) Jordi Isern, ICE (CSIC) Santiago Torres, UPC Editors Conference photograph

Observations of the Ultraviolet Spectra of Helium (DB) White Dwarfs and a Study of the Ultraviolet Spectra of White Dwarfs Containing Carbon

NASA Technical Reports Server (NTRS)

Wegner, G. A.

1984-01-01

Strong ultraviolet carbon lines were detected in the spectrum of the southern DC white dwarf BPM 11668. Observations of a number of hotter DB white dwarfs with IUE show no evidence of carbon features. Two additional DA white dwarfs were observed that have the strong unidentified absorption near 1400 A which now seems to be identified with another lower temperature feature as satellite lines to Lyman alpha radiation.

Anodic Oxidative Modification of Egg White for Heat Treatment.

PubMed

Takahashi, Masahito; Handa, Akihiro; Yamaguchi, Yusuke; Kodama, Risa; Chiba, Kazuhiro

2016-08-31

A new functionalization of egg white was achieved by an electrochemical reaction. The method involves electron transfer from thiol groups of egg white protein to form disulfide bonds. The oxidized egg white produced less hydrogen sulfide during heat treatment; with sufficient application of electricity, almost no hydrogen sulfide was produced. In addition, gels formed by heating electrochemically oxidized egg white exhibited unique properties, such as a lower gelation temperature and a softened texture, presumably due to protein aggregation and electrochemically mediated intramolecular disulfide bond formation.

Top-emitting white organic light-emitting devices with down-conversion phosphors: theory and experiment.

PubMed

Ji, Wenyu; Zhang, Letian; Gao, Ruixue; Zhang, Liming; Xie, Wenfa; Zhang, Hanzhuang; Li, Bin

2008-09-29

White top-emitting organic light-emitting devices (TEOLEDs) with down-conversion phosphors are investigated from theory and experiment. The theoretical simulation was described by combining the microcavity model with the down-conversion model. A White TEOLED by the combination of a blue TEOLED with organic down-conversion phosphor 3-(4-(diphenylamino)phenyl)-1-pheny1prop-2-en-1-one was fabricated to validate the simulated results. It is shown that this approach permits the generation of white light in TEOLEDs. The efficiency of the white TEOLED is twice over the corresponding blue TEOLED. The feasible methods to improve the performance of such white TEOLEDs are discussed.

The properties and origin of magnetic fields in white dwarfs

NASA Astrophysics Data System (ADS)

Kawka, A.

2018-01-01

A significant fraction of white dwarfs harbour a magnetic field with strengths ranging from a few kG up to about 1000 MG. The fraction appears to depend on the specific class of white dwarfs being investigated and may hold some clues to the origin of their magnetic field. The number of white dwarfs with variable fields as a function of their rotation phase have revealed a large field structure diversity, from a simple offset dipole to structures with spots or multipoles. A review of the current challenges in modelling white dwarf atmospheres in the presence of a magnetic field is presented, and the proposed scenarios for the formation of magnetic fields in white dwarfs are examined.

Increased Executive Functioning, Attention, and Cortical Thickness in White-Collar Criminals

PubMed Central

Raine, Adrian; Laufer, William S.; Yang, Yaling; Narr, Katherine L.; Thompson, Paul; Toga, Arthur W.

2011-01-01

Very little is known on white collar crime and how it differs to other forms of offending. This study tests the hypothesis that white collar criminals have better executive functioning, enhanced information processing, and structural brain superiorities compared to offender controls. Using a case-control design, executive functioning, orienting, and cortical thickness was assessed in 21 white collar criminals matched with 21 controls on age, gender, ethnicity, and general level of criminal offending. White collar criminals had significantly better executive functioning, increased electrodermal orienting, increased arousal, and increased cortical gray matter thickness in the ventromedial prefrontal cortex, inferior frontal gyrus, somatosensory cortex, and the temporal-parietal junction compared to controls. Results, while initial, constitute the first findings on neurobiological characteristics of white-collar criminals It is hypothesized that white collar criminals have information-processing and brain superiorities that give them an advantage in perpetrating criminal offenses in occupational settings. PMID:22002326

Increased executive functioning, attention, and cortical thickness in white-collar criminals.

PubMed

Raine, Adrian; Laufer, William S; Yang, Yaling; Narr, Katherine L; Thompson, Paul; Toga, Arthur W

2012-12-01

Very little is known on white-collar crime and how it differs to other forms of offending. This study tests the hypothesis that white-collar criminals have better executive functioning, enhanced information processing, and structural brain superiorities compared with offender controls. Using a case-control design, executive functioning, orienting, and cortical thickness was assessed in 21 white-collar criminals matched with 21 controls on age, gender, ethnicity, and general level of criminal offending. White-collar criminals had significantly better executive functioning, increased electrodermal orienting, increased arousal, and increased cortical gray matter thickness in the ventromedial prefrontal cortex, inferior frontal gyrus, somatosensory cortex, and the temporal-parietal junction compared with controls. Results, while initial, constitute the first findings on neurobiological characteristics of white-collar criminals. It is hypothesized that white-collar criminals have information-processing and brain superiorities that give them an advantage in perpetrating criminal offenses in occupational settings. Copyright © 2011 Wiley Periodicals, Inc.

Effects of display characteristics and individual differences on preferences of VDT icon design.

PubMed

Shieh, Kong-King; Ko, Ya-Hsien

2005-04-01

This study explored the effects of display characteristics such as target/background color combination, single/simultaneous presentation, and individual differences by sex, and design specialty on preferences of VDT icon design. The results indicated black targets (black-on-white, black-on-yellow) and black backgrounds (red-on-black, yellow-on-black) were the most popular and white targets (white-on-red, white-on-black) and white backgrounds (blue-on-white, red-on-white) were the second most popular. As for the chromatic color combinations, yellow-on-blue was the most favored. Subjects rated color combinations under single presentation higher than those under simultaneous presentation. Women rated purplish targets and rated purplish and blue backgrounds higher than men. Subjects with design background favored black more either as a target or background, but they favored turquoise less than those without design background.

Does equal socioeconomic status in black and white men mean equal risk of mortality?

PubMed Central

Keil, J E; Sutherland, S E; Knapp, R G; Tyroler, H A

1992-01-01

Although concerns have been expressed that mortality from coronary disease and all other causes is greater among Blacks than Whites, we hypothesized that, when socioeconomic status is adequately considered, mortality inequalities between Blacks and Whites are insignificant. The study population was a random sampling of Black and White men who were 35 years of age or older when recruited into the Charleston Heart Study in 1960. Education level and occupational status at baseline were used to compare mortality over the ensuing 28 years between Black and White men, who were classified as low or high socioeconomic status. In no instance were Black-White differences in all-cause or coronary disease mortality rates significantly different when socioeconomic status was controlled. We conclude that socioeconomic status is an important predictor of mortality and that, when socioeconomic status is considered, differences in Black-White mortality rates may be small. PMID:1636835

Characteristics of white LED transmission through a smoke screen

NASA Astrophysics Data System (ADS)

Zheng, Yunfei; Yang, Aiying; Feng, Lihui; Guo, Peng

2018-01-01

The characteristics of white LED transmission through a smoke screen is critical for visible light communication through a smoke screen. Based on the Mie scattering theory, the Monte Carlo transmission model is established. Based on the probability density function, the white LED sampling model is established according to the measured spectrum of a white LED and the distribution angle of the lambert model. The sampling model of smoke screen particle diameter is also established according to its distribution. We simulate numerically the influence the smoke thickness, the smoke concentration and the angle of irradiance of white LED on transmittance of the white LED. We construct a white LED smoke transmission experiment system. The measured result on the light transmittance and the smoke concentration agreed with the simulated result, and demonstrated the validity of simulation model for visible light transmission channel through a smoke screen.

[Research on brain white matter network in cerebral palsy infant].

PubMed

Li, Jun; Yang, Cheng; Wang, Yuanjun; Nie, Shengdong

2017-10-01

Present study used diffusion tensor image and tractography to construct brain white matter networks of 15 cerebral palsy infants and 30 healthy infants that matched for age and gender. After white matter network analysis, we found that both cerebral palsy and healthy infants had a small-world topology in white matter network, but cerebral palsy infants exhibited abnormal topological organization: increased shortest path length but decreased normalize clustering coefficient, global efficiency and local efficiency. Furthermore, we also found that white matter network hub regions were located in the left cuneus, precuneus, and left posterior cingulate gyrus. However, some abnormal nodes existed in the frontal, temporal, occipital and parietal lobes of cerebral palsy infants. These results indicated that the white matter networks for cerebral palsy infants were disrupted, which was consistent with previous studies about the abnormal brain white matter areas. This work could help us further study the pathogenesis of cerebral palsy infants.

The Impact of "Colorblind" Ideologies on Students of Color: Intergroup Relations at a Predominantly White University.

ERIC Educational Resources Information Center

Lewis, Amanda E.; Chesler, Mark; Forman, Tyrone A.

2000-01-01

Investigated the experiences of minority students with their white peers on predominantly white campuses. Focus groups revealed how white students' purported color-blindness regarding race often blinded them to their own color conscious behavior and the subsequent stereotyping effects. Participants' discussions examined stereotyping, assimilation,…

Effects of a Brief Video Intervention on White University Students' Racial Attitudes

ERIC Educational Resources Information Center

Soble, Jason R.; Spanierman, Lisa B.; Liao, Hsin-Ya

2011-01-01

The authors investigated the effects of a brief video intervention on the racial attitudes of White university students. One hundred thirty-eight self-identified White students were randomly assigned to either an experimental condition in which they viewed a video documenting the pervasiveness of institutional racism and White privilege in the…

Confronting White Privilege

ERIC Educational Resources Information Center

Swalwell, Katy

2012-01-01

Even as the United States becomes more diverse, a new era of "white flight" is unfolding. Whether they live in urban, suburban or rural communities, white students are likely to attend schools that reinforce their perceptions of cultural dominance. The average white student attends a school where 77 percent of the student body is of their race.…

Voices of Teacher Candidates of Color on White Race Evasion: "I Worried about My Safety!"

ERIC Educational Resources Information Center

Amos, Yukari Takimoto

2016-01-01

This qualitative study investigated the negative impacts minority teacher candidates receive from white teacher candidates in a required multicultural education class. The findings reveal that four teacher candidates of color had difficulty positioning themselves among the overwhelming silencing power of whiteness in the class. The white students…

21 CFR 160.150 - Frozen egg whites.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 21 Food and Drugs 2 2010-04-01 2010-04-01 false Frozen egg whites. 160.150 Section 160.150 Food... HUMAN CONSUMPTION EGGS AND EGG PRODUCTS Requirements for Specific Standardized Eggs and Egg Products § 160.150 Frozen egg whites. (a) Frozen egg whites, frozen egg albumen is the food prepared by freezing...

Income Disparities Between Black and White Americans, Background Paper.

ERIC Educational Resources Information Center

Coleman, Sinclair; And Others

Substantial differences exist between the incomes of white and black Americans. These differences in income are a major aspect of inequality between blacks and whites. Improvements and declines in black income relative to white income have roughly paralleled expansions and contractions in the business cycle. Income differences are related to a…

Hybridization and classification of the white pines (Pinus section strobus)

Treesearch

William B. Critchfield

1986-01-01

Many North American and Eurasian white pines retain their ability to hybridize even after long isolation, and about half of all white pine hybrids from controlled pollinations are inter-hemisphere crosses. Within the morphologically homogeneous and otherwise highly crossable core group of white pines, an exception in crossing behavior is Pinus lambertiana...

White Western Male Teachers Constructing Academic Identities in Japanese Higher Education

ERIC Educational Resources Information Center

Appleby, Roslyn

2014-01-01

In research on gender and teaching in higher education, the experiences of male teachers "as men", and of whiteness in a "non"-majority-white context have received little attention. As one step towards addressing this gap in the literature, this paper analyses interview accounts of white Western men working as English language…

75 FR 23666 - Huron-Manistee National Forests, White Pines Wind Farm Project, Mason County, MI

Federal Register 2010, 2011, 2012, 2013, 2014

2010-05-04

... DEPARTMENT OF AGRICULTURE Forest Service Huron-Manistee National Forests, White Pines Wind Farm... environmental impact statement for the White Pines Wind Farm Project on National Forest System (NFS) lands... terminates the environmental analysis process for the White Pines Wind Farm Project. DATES: The Notice of...

Racial Diversity in the Schools: A Necessary Evil?

ERIC Educational Resources Information Center

Markowitz, Linda; Puchner, Laurel

2014-01-01

White teachers see racial diversity in the schools as a "necessary evil." Common beliefs are that (1) Black students are saved by nurturing White teachers and well-behaved White children; and (2) White students learn from "disadvantaged" Black children the dual lesson of empathy and gratitude. A pilot project in the fall of…

49 CFR 173.188 - White or yellow phosphorus.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 49 Transportation 2 2010-10-01 2010-10-01 false White or yellow phosphorus. 173.188 Section 173... Class 7 § 173.188 White or yellow phosphorus. Phosphorus, white or yellow, when offered for... pound) of phosphorus with screw-top closures; or (2) Steel drums (1A1) not over 250 L (66 gallons...

49 CFR 173.188 - White or yellow phosphorus.

Code of Federal Regulations, 2011 CFR

2011-10-01

... 49 Transportation 2 2011-10-01 2011-10-01 false White or yellow phosphorus. 173.188 Section 173... Class 7 § 173.188 White or yellow phosphorus. Phosphorus, white or yellow, when offered for... pound) of phosphorus with screw-top closures; or (2) Steel drums (1A1) not over 250 L (66 gallons...

Constructions of Race among Religiously Conservative College Students

ERIC Educational Resources Information Center

Modica, Marianne

2012-01-01

The "Whites as victims" motif in conversations about race has been well documented in recent decades. When discussing affirmative action hiring policies, a common belief expressed by Whites is that people of color have been permitted to progress unfairly at the expense of harder working Whites. Whites using this discourse see themselves…

76 FR 60557 - Closure of the U.S. Nuclear Regulatory Commission's Two White Flint North Building Entrance

Federal Register 2010, 2011, 2012, 2013, 2014

2011-09-29

... Two White Flint North Building Entrance AGENCY: Nuclear Regulatory Commission. ACTION: Notice of... through the recently renovated One White Flint North (OWFN) building entrance lobby. Only NRC badged employees and contractors shall be permitted to use the Two White Flint North (TWFN) building entrance. NRC...

Silvicultural guide for northern white-cedar (eastern white cedar)

Treesearch

Emmanuelle Boulfroy; Eric Forget; Philip V. Hofmeyer; Laura S. Kenefic; Catherine Larouche; Guy Lessard; Jean-Martin Lussier; Fred Pinto; Jean-Claude Ruel; Aaron. Weiskittel

2012-01-01

Northern white-cedar (eastern white cedar; Thuja occidentalis L.) is an important tree species in the northeastern United States and adjacent Canada, occurring both in pure stands and as a minor species in mixed stands of hardwoods or other softwoods. Yet practitioners have little and often contradictory information about cedar ecology and...

Dose and Enantiospecific Responses of White Pine Cone Beetles, Conophthorus coniperda, to a-Pinene in an Eastern White Pine Seed Orchard

Treesearch

Daniel R. Miller; Christopher M. Crowe; Christopher Asaro; Gary L. DeBarr

2003-01-01

The white pine cone beetle, Conophthorus coniperda, exhibited dose and enantiospecific responses to a-pinene in stands of mature eastern white pine, Pinus strobus, in a seed orchard near Murphy, North Carolina, USA. (-)-a-Pinene significantly increased catches of cone beetles to...

36 CFR § 1260.22 - Who is responsible for the declassification of classified national security White House...

Code of Federal Regulations, 2013 CFR

2013-07-01

... declassification of classified national security White House originated information in NARA's holdings? § 1260.22... for the declassification of classified national security White House originated information in NARA's... was originated by: (1) The President and Vice President; (2) The White House staff; (3) Committees...

Registration of “Pritchett” soft white winter club wheat

USDA-ARS?s Scientific Manuscript database

Soft white club winter wheat (Triticium aestivum L. ssp. compactum) is a unique component of the wheat production in the PNW, comprising 6-10% of the wheat crop. It is valued for milling and baking functionality and marketed for export in a 20-30% blend with soft white wheat as Western White. Our g...

The Achievement Gap between White and Non-White Students

ERIC Educational Resources Information Center

Rojas-LeBouef, Ana; Slate, John R.

2012-01-01

This Collection contains three seminal modules by Authors Ana Rojas-LeBouef and John R. Slate, professors and researchers from Sam Houston State University in Texas. They are nationally recognized scholars in the area of the academic inequity between White and Non-White students. This paper is divided into three chapters. Chapter 1--The…

Histology of white pine blister rust in needles of resistant and susceptible eastern white pine

Treesearch

Joel A. Jurgens; Robert A. Blanchette; Paul J. Zambino; Andrew David

2003-01-01

White pine blister rust, Cronartium ribicola, has plagued the forests of North America for almost a century. Over past decades, eastern white pine (Pinus strobus) that appear to tolerate the disease have been selected and incorporated into breeding programs. Seeds from P. strobus with putative resistance were...

Loving Whiteness to Death: Sadomasochism, Emotionality, and the Possibility of Humanizing Love

ERIC Educational Resources Information Center

Matias, Cheryl E.; Allen, Ricky Lee

2013-01-01

Although scholars have articulated how whites institutionally, economically, and socially invest in their whiteness, they have paid little attention to white emotionality. By explicating a critical, more humanizing theory of love that accounts for the painful process of sharing in the burden of creating humanity, this psychoanalytic theoretical…

The Achievement Gap between White and Non-White Students: A Conceptual Analysis

ERIC Educational Resources Information Center

Rojas-LeBouef, Ana; Slate, John R.

2011-01-01

In this article, we analyzed past and present research studies in which investigators examined differences in academic achievement between students who were White and non-White (i.e., specifically Hispanic or students designated as Limited English Proficient). As anticipated, the majority of the researchers whose studies were analyzed reported…

Black and White Women Managers: Access to Opportunity

ERIC Educational Resources Information Center

Hite, Linda M.

2004-01-01

This study explores the differing views of Black and White female managers regarding access to key career opportunities for White women and women of color. Items addressed include access to hiring, promotions, key assignments, salary increases, acknowledgment for work, and mentors. Access to each is described by comparing White women and women of…

The Measure of a Black Life?: A Poetic Interpretation of Hope and Discontent

ERIC Educational Resources Information Center

William­-White, Lisa

2013-01-01

Here, Spoken Word poetics (William-White, 2011 a, 2011 b; William-White & White, 2011 ; William-White, 201 3) is utilized here to interpret and reflect on racialized violence and homicide in the United States. African American youth, particularly in urban communities, are disproportionately affected by violent crime, namely homicide when…

36 CFR 1260.60 - What are agency responsibilities with regard to mandatory review requests for White House...

Code of Federal Regulations, 2010 CFR

2010-07-01

... responsibilities with regard to mandatory review requests for White House originated information? 1260.60 Section... responsibilities with regard to mandatory review requests for White House originated information? When an agency receives a mandatory review request from NARA for consultation on declassification of White House...

Multiple Pathways to Whiteness: White Teachers' Unsteady Racial Identities

ERIC Educational Resources Information Center

Miller, Erin T.

2017-01-01

Teacher education programs in the US, recognizing the mismatch that exists in preschool provision between mostly white teachers and a very diverse intake of young children, have begun to explore ways of raising racial awareness among pre-service teachers, with the aim of improving non-white children's classroom experiences and outcomes. This paper…

Teaching White Privilege to White Students Can Mean Saying Good-Bye to Positive Student Evaluations

ERIC Educational Resources Information Center

Boatright-Horowitz, Su L.; Soeung, Sojattra

2009-01-01

This article discusses the negative impact that teaching antiracism can have on teaching careers when students evaluate their efforts and abilities. The published literature abounds with anecdotes about negative student reactions to antiracism teaching, particularly when it involves teaching White students about White privilege. Students often…

White Ethnics: Their Life in Working Class America.

ERIC Educational Resources Information Center

Ryan, Joseph, Ed.

The contents of this book are organized in four parts. Part 1, "Defining White Ethnicity," consists of three essays: "What is an Ethnic?" Andrew Greeley; "Components of the White Ethnic Movement," Perry Weed; and "Confessions of a White Ethnic," Michael Novak. Part 2, "The Family, Parish, and Neighborhood," consists of six essays: "La Famiglia:…

36 CFR 1260.60 - What are agency responsibilities with regard to mandatory review requests for White House...

Code of Federal Regulations, 2011 CFR

2011-07-01

... responsibilities with regard to mandatory review requests for White House originated information? 1260.60 Section... responsibilities with regard to mandatory review requests for White House originated information? When an agency receives a mandatory review request from NARA for consultation on declassification of White House...

The Black-White Achievement Gap through the Lens of Central Office Administrators

ERIC Educational Resources Information Center

Baskin, Roger S., Sr.

2013-01-01

This study investigated the perceptions of Black and White central office administrators regarding the Black-White achievement gap. Four research questions (RQ) were explored: RQ1: How do central office administrators understand the causes of the Black-White achievement gap? RQ2: How do central office administrators perceive their role in…

One Black, One White: Power, White Privilege, & Creating Safe Spaces

ERIC Educational Resources Information Center

Delano-Oriaran, Omobolade O.; Parks, Marguerite W.

2015-01-01

This article explores the experiences of two professors as they teach about White privilege in predominately White institutions of higher education. The authors discuss how racial potentiality shapes the classroom climates of each of the professors and then present strategies that utilize safe spaces to navigate students away from the resistance…

White Religious Educators Resisting White Fragility: Lessons from Mystics

ERIC Educational Resources Information Center

Hess, Mary E.

2017-01-01

Decades of work in dismantling racism have not yielded the kind of results for which religious educators have hoped. One primary reason has been what scholars term "white fragility," a symptom of the structural racism which confers systemic privilege upon White people. Lessons learned from Christian mystics point to powerful ways to…

78 FR 63990 - HIV/AIDS Bureau; Ryan White HIV/AIDS Program Core Medical Services Waiver; Application Requirements

Federal Register 2010, 2011, 2012, 2013, 2014

2013-10-25

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Health Resources and Services Administration HIV/AIDS Bureau; Ryan White HIV/AIDS Program Core Medical Services Waiver; Application Requirements AGENCY: Health... Service Act, as amended by the Ryan White HIV/AIDS Treatment Extension Act of 2009 (Ryan White Program or...

Ethnic/Racial Attitudes and Self-Identification of Black Jamaican and White New England Children.

ERIC Educational Resources Information Center

Cramer, Phebe; Anderson, Gail

2003-01-01

Black and white researchers interviewed black Jamaican and white New England elementary students in urban and rural schools regarding skin color, body size preference, and self-identification, using a modified dolls test. Children from all three communities showed white favoritism and average body size favoritism. Within communities, there were…

Troubling Whiteness: Music Education and the "Messiness" of Equity Work

ERIC Educational Resources Information Center

Hess, Juliet

2018-01-01

At the elementary level, White, female music teachers largely populate music education. In the diverse schools of Toronto in Canada, teachers navigate their White subjectivities in a range of ways. My research examines the discourses, philosophies, and practices of four White, female elementary music educators who have striven to challenge…

37 CFR 7.11 - Requirements for international application originating from the United States.

Code of Federal Regulations, 2013 CFR

2013-07-01

... application and/or registration is depicted in black and white and the basic application or registration does... and white. (ii) If the mark in the basic application or registration is depicted in black and white and includes a color claim, the international application must include both a black and white...

Thirty-year assessment of released, overtopped white oaks

Treesearch

C. Miller; S. Grayson; A. Houser; W. Clatterbuck; K. Kuers

2011-01-01

White oak (Quercus alba L.) is a slow-growing species that is often overtopped in the mixed upland hardwood forests of the Cumberland Plateau. Forest managers have concerns about the potential economic value of releasing overtopped white oaks to become valuable crop trees. This study follows the growth and development of 104 overtopped white oaks...

Toxicity of White Snakeroot (Ageratina altissima) and chemical extracts of White Snakeroot in goats

USDA-ARS?s Scientific Manuscript database

White snakeroot (Ageratina altissima) is a sporadically toxic plant that causes trembles in livestock and milk sickness in humans that drink tainted milk. The putative toxin in white snakeroot is tremetone and possibly other benzofuran ketones even though it has not been demonstrated in vivo. Toxi...

78 FR 18989 - Ryan White HIV/AIDS Program, Part C Early Intervention Services Grant Under the Ryan White HIV...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-03-28

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Health Resources and Services Administration Ryan White HIV/AIDS Program, Part C Early Intervention Services Grant Under the Ryan White HIV/AIDS Program AGENCY: Health Resources and Services Administration (HRSA), Department of Health and Human Services...

78 FR 25458 - Ryan White HIV/AIDS Program, Part C Early Intervention Services Grant Under the Ryan White HIV...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-05-01

... DEPARTMENT OF HEALTH AND HUMAN SERVICES Health Resources and Services Administration Ryan White... AGENCY: Health Resources and Services Administration (HRSA), HHS. ACTION: Notice of Ryan White HIV/AIDS..., HIV/AIDS Bureau, Health Resources and Services Administration, by email at [email protected] , or by...

Examining African American and white outdoor recreation participation after demographic standardization on selected characteristics

Treesearch

James E. Christensen; John F. Dwyer

1995-01-01

The "marginality" explanation of differences between the outdoor recreation participation of African Americans and Whites was evaluated using demographic standardization of age, income, and education for a sample of African American and White Illinois residents. After standardization, African America/White differences in outdoor recreation participation were...

21 CFR 160.150 - Frozen egg whites.

Code of Federal Regulations, 2011 CFR

2011-04-01

... 21 Food and Drugs 2 2011-04-01 2011-04-01 false Frozen egg whites. 160.150 Section 160.150 Food... HUMAN CONSUMPTION EGGS AND EGG PRODUCTS Requirements for Specific Standardized Eggs and Egg Products § 160.150 Frozen egg whites. (a) Frozen egg whites, frozen egg albumen is the food prepared by freezing...

White Teachers/White Schools: Oral Histories from the Struggle against Apartheid.

ERIC Educational Resources Information Center

Wieder, Alan

2003-01-01

Presents the oral histories of two white teachers who taught in white South African schools during apartheid. Both combined pedagogy and politics in their lives as teachers and joined other teachers in the struggle against apartheid. Describes the oral history project, apartheid and education, and oral history methodology. Both teachers spent…

77 FR 60101 - Boundary Establishment for White Salmon Wild and Scenic River “Lower Segment”, Gifford Pinchot...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-10-02

... Establishment for White Salmon Wild and Scenic River ``Lower Segment'', Gifford Pinchot National Forest..., is transmitting the final amended boundary of the White Salmon Wild and Scenic River ``Lower Segment... Friday. SUPPLEMENTARY INFORMATION: The White Salmon Wild and Scenic River ``Lower Segment'' boundary is...

Towards a truer multicultural science education: how whiteness impacts science education

NASA Astrophysics Data System (ADS)

Le, Paul T.; Matias, Cheryl E.

2018-03-01

The hope for multicultural, culturally competent, and diverse perspectives in science education falls short if theoretical considerations of whiteness are not entertained. Since whiteness is characterized as a hegemonic racial dominance that has become so natural it is almost invisible, this paper identifies how whiteness operates in science education such that it falls short of its goal for cultural diversity. Because literature in science education has yet to fully entertain whiteness ideology, this paper offers one of the first theoretical postulations. Drawing from the fields of education, legal studies, and sociology, this paper employs critical whiteness studies as both a theoretical lens and an analytic tool to re-interpret how whiteness might impact science education. Doing so allows the field to reconsider benign, routine, or normative practices and protocol that may influence how future scientists of Color experience the field. In sum, we seek to have the field consider the theoretical frames of whiteness and how it might influence how we engage in science education such that our hope for diversity never fully materializes.

Evaluation of the White Test for the Intraoperative Detection of Bile Leakage

PubMed Central

Leelawat, Kawin; Chaiyabutr, Kittipong; Subwongcharoen, Somboon; Treepongkaruna, Sa-ad

2012-01-01

We assess whether the White test is better than the conventional bile leakage test for the intraoperative detection of bile leakage in hepatectomized patients. This study included 30 patients who received elective liver resection. Both the conventional bile leakage test (injecting an isotonic sodium chloride solution through the cystic duct) and the White test (injecting a fat emulsion solution through the cystic duct) were carried out in the same patients. The detection of bile leakage was compared between the conventional method and the White test. A bile leak was demonstrated in 8 patients (26.7%) by the conventional method and in 19 patients (63.3%) by the White test. In addition, the White test detected a significantly higher number of bile leakage sites compared with the conventional method (Wilcoxon signed-rank test; P < 0.001). The White test is better than the conventional test for the intraoperative detection of bile leakage. Based on our study, we recommend that surgeons investigating bile leakage sites during liver resections should use the White test instead of the conventional bile leakage test. PMID:22547901

Evaluation of the white test for the intraoperative detection of bile leakage.

PubMed

Leelawat, Kawin; Chaiyabutr, Kittipong; Subwongcharoen, Somboon; Treepongkaruna, Sa-Ad

2012-01-01

We assess whether the White test is better than the conventional bile leakage test for the intraoperative detection of bile leakage in hepatectomized patients. This study included 30 patients who received elective liver resection. Both the conventional bile leakage test (injecting an isotonic sodium chloride solution through the cystic duct) and the White test (injecting a fat emulsion solution through the cystic duct) were carried out in the same patients. The detection of bile leakage was compared between the conventional method and the White test. A bile leak was demonstrated in 8 patients (26.7%) by the conventional method and in 19 patients (63.3%) by the White test. In addition, the White test detected a significantly higher number of bile leakage sites compared with the conventional method (Wilcoxon signed-rank test; P < 0.001). The White test is better than the conventional test for the intraoperative detection of bile leakage. Based on our study, we recommend that surgeons investigating bile leakage sites during liver resections should use the White test instead of the conventional bile leakage test.

Synthesis and Electroluminescent Property of New Orange Iridium Compounds for Flexible White Organic Light Emitting Diodes.

PubMed

Lee, Ho Won; Jeong, Hyunjin; Kim, Young Kwan; Ha, Yunkyoung

2015-10-01

Recently, white organic light-emitting diodes (OLEDs) have aroused considerable attention because they have the potential of next-generation flexible displays and white illuminated applications. White OLED applications are particularly heading to the industry but they have still many problems both materials and manufacturing. Therefore, we proposed that the new iridium compounds of orange emitters could be demonstrated and also applied to flexible white OLEDs for verification of potential. First, we demonstrated the chemical properties of new orange iridium compounds. Secondly, conventional two kinds of white phosphorescent OLEDs were fabricated by following devices; indium-tin oxide coated glass substrate/4,4'-bis[N-(napthyl)-N-phenylamino]biphenyl/N,N'-dicarbazolyl-3,5-benzene doped with blue and new iridium compounds for orange emitting 8 wt%/1,3,5-tris[N-phenylbenzimidazole-2-yl]benzene/lithium quinolate/aluminum. In addition, we fabricated white OLEDs using these emitters to verify the potential on flexible substrate. Therefore, this work could be proposed that white light applications can be applied and could be extended to additional research on flexible applications.

Effect of four over-the-counter tooth-whitening products on enamel microhardness.

PubMed

Majeed, A; Grobler, S R; Moola, M H; Oberholzer, T G

2011-10-01

This in vitro study evaluated the effect of four over-the-counter tooth-whitening products on enamel microhardness. Fifty enamel blocks were prepared from extracted human molar teeth. The enamel surfaces were polished up to 1200 grit fineness and the specimens randomly divided into five groups. Enamel blocks were exposed to: Rapid White (n=10); Absolute White (n=10); Speed White (n=10) and White Glo (n=10) whitening products, according to the manufacturers' instructions. As control, ten enamel blocks were kept in artificial saliva at 37 degrees C without any treatment. Microhardness values were obtained before exposure (baseline) and after 1, 7 and 14-day treatment periods using a digital hardness tester with a Vickers diamond indenter. Data were analysed using Wilcoxon Signed Rank Sum Test, one-way ANOVA and Tukey-Kramer Multiple Comparison Test (p<0.05). Both Rapid White and Absolute White reduced enamel microhardness. Speed White increased the microhardness of enamel, while White Glo and artificial saliva had no effect on hardness. Over-the-counter tooth-whitening products might decrease enamel microhardness depending on the type of product.

Gender and the Residential Mobility and Neighborhood Attainment of Black-White Couples.

PubMed

Gabriel, Ryan

2018-04-01

Including black-white couples in the study of residential stratification accentuates gendered power disparities within couples that favor men over women, which allows for the analysis of whether the race of male partners in black-white couples is associated with the racial and ethnic composition of their neighborhoods. I investigate this by combining longitudinal data between 1985 and 2015 from the Panel Study of Income Dynamics linked to neighborhood- and metropolitan-level data compiled from four censuses. Using these data, I assess the mobility of black male-white female and white male-black female couples out of and into neighborhoods defined respectively by their levels of whites, blacks, and ethnoracial diversity. My results show that the race of the male partner in black-white couples tends to align with the racial and ethnic composition of the neighborhoods where these couples reside. This finding highlights that the racial hierarchy within the United States affects the residential mobility and attainment of black-white couples, but its influence is conditioned by the race and gender composition of these couples.

The unbearable whiteness of being (in nursing).

PubMed

Puzan, Elayne

2003-09-01

My purpose in writing this paper is to uncover some of the ways in which nursing participates in, reproduces, and resists the detrimental practices associated with white cultural privilege and to share some instances of its personal and social costs. It draws upon the body of scholarship which interrogates racism as it is enacted through whiteness in North America. Whiteness is depicted not as a preordained biological property, but as a socially constructed category of race, wherein non-white people are racially designated, while whites escape such designation and occupy positions which allow them to carry on as if what they say is neutral, rather than historically and ideologically situated. While the concept of whiteness may not have much resonance in nursing, it offers another way to talk about racism, one that does not stop with the scrutiny of the racialized Other. The presumed neutrality of whiteness has been institutionalized so that its authority to define knowledge, membership, and language, as well as its ability to stipulate and enforce the rules and regulations of everyday concourse and discourse within nursing is concealed.

White Matter Changes in Tinnitus: Is It All Age and Hearing Loss?

PubMed

Yoo, Hye Bin; De Ridder, Dirk; Vanneste, Sven

2016-02-01

Tinnitus is a condition characterized by the perception of auditory phantom sounds. It is known as the result of complex interactions between auditory and nonauditory regions. However, previous structural imaging studies on tinnitus patients showed evidence of significant white matter changes caused by hearing loss that are positively correlated with aging. Current study focused on which aspects of tinnitus pathologies affect the white matter integrity the most. We used the diffusion tensor imaging technique to acquire images that have higher contrast in brain white matter to analyze how white matter is influenced by tinnitus-related factors using voxel-based methods, region of interest analysis, and deterministic tractography. As a result, white matter integrity in chronic tinnitus patients was both directly affected by age and also mediated by the hearing loss. The most important changes in white matter regions were found bilaterally in the anterior corona radiata, anterior corpus callosum, and bilateral sagittal strata. In the tractography analysis, the white matter integrity values in tracts of right parahippocampus were correlated with the subjective tinnitus loudness.

Suspicion of Motives Predicts Minorities' Responses to Positive Feedback in Interracial Interactions.

PubMed

Major, Brenda; Kunstman, Jonathan W; Malta, Brenna D; Sawyer, Pamela J; Townsend, Sarah S M; Mendes, Wendy Berry

2016-01-01

Strong social and legal norms in the United States discourage the overt expression of bias against ethnic and racial minorities, increasing the attributional ambiguity of Whites' positive behavior to ethnic minorities. Minorities who suspect that Whites' positive overtures toward minorities are motivated more by their fear of appearing racist than by egalitarian attitudes may regard positive feedback they receive from Whites as disingenuous. This may lead them to react to such feedback with feelings of uncertainty and threat. Three studies examined how suspicion of motives relates to ethnic minorities' responses to receiving positive feedback from a White peer or same-ethnicity peer (Experiment 1), to receiving feedback from a White peer that was positive or negative (Experiment 2), and to receiving positive feedback from a White peer who did or did not know their ethnicity (Experiment 3). As predicted, the more suspicious Latinas were of Whites' motives for behaving positively toward minorities in general, the more they regarded positive feedback from a White peer who knew their ethnicity as disingenuous and the more they reacted with cardiovascular reactivity characteristic of threat/avoidance, increased feelings of stress, heightened uncertainty, and decreased self-esteem. We discuss the implications for intergroup interactions of perceptions of Whites' motives for nonprejudiced behavior.

2013 White Book, Pacific Northwest Loads and Resources Study (summary)

DOE Office of Scientific and Technical Information (OSTI.GOV)

None

The 2013 Pacific Northwest Loads and Resources Study (2013 White Book) is BPA's latest projection of the Pacific Northwest regional retail loads, contract obligations, contract purchases, and resource capabilities. The 2013 White Book is a snapshot of conditions as of October 1, 2013, documenting the loads and resources for the Federal system and region for the 10-year study period OY 2014 through 2023. The White Book contains projections of regional and Federal system load and resource capabilities, along with relevant definitions and explanations. The White Book also contains information obtained from formalized resource planning reports and data submittals including thosemore » from individual utilities, the Northwest Power and Conservation Council (Council), and the Pacific Northwest Utilities Conference Committee (PNUCC). Starting with the 2012 White Book, BPA changed the annual production schedule for future White Books. BPA is scheduled to publish a complete White Book, which includes a Federal System Needs Assessment analysis, every other year (even years). In the odd-numbered years, BPA will publish a biennial summary update (Supplement) that only contains major changes to the Federal System and Regional System analyses that have occurred since the last White Book. http://www.bpa.gov/power/pgp/whitebook/2013/index.shtml.« less

[Study on the white channel system carved on the wooden acupoint figurine of Laoguanshan: comments on lacquer-coating acupoint figure].

PubMed

Liu, Chengzhong

2018-02-12

There are two systems as the red channel system and the white channel system carved or painted on the wooden figurine of Laoguanshan of Benque school. The two systems are horizontally staggered each other without overlapped. The red channel system, similar to Shuangbaoshan wooden figurine, have channels, but without points. For the white channel system, the running courses of channels result from the sensation distributions of the points after optional stimulation. The Laoguanshan wooden figurine focuses on the illustration of the white channel system, named as white channel figurine. Compared with the Shuangbaoshan red channel figurine, together with examples, such as the running course of the white channel related to the meridian of heart-transfer-point, the white channel related to the belt vessel linking to lung-transfer-point, stomach-transfer-point and kidney-transfer-point, as well as the corresponding photographs. It is indicated that the Laoguanshan white channel figurine is a training aid for testing the sensation marching along channel (SMC) caused by transfer-point stimulation. The white channel system is a flexible way of channel. The study aims to observe the QI /SMC reaching the affected area and contributes to clinical practice. This discovery is not related to the "intermediate link theory" in the Yellow Emperor meridian system.

Deterministic Migration-Based Separation of White Blood Cells.

PubMed

Kim, Byeongyeon; Choi, Young Joon; Seo, Hyekyung; Shin, Eui-Cheol; Choi, Sungyoung

2016-10-01

Functional and phenotypic analyses of peripheral white blood cells provide useful clinical information. However, separation of white blood cells from peripheral blood requires a time-consuming, inconvenient process and thus analyses of separated white blood cells are limited in clinical settings. To overcome this limitation, a microfluidic separation platform is developed to enable deterministic migration of white blood cells, directing the cells into designated positions according to a ridge pattern. The platform uses slant ridge structures on the channel top to induce the deterministic migration, which allows efficient and high-throughput separation of white blood cells from unprocessed whole blood. The extent of the deterministic migration under various rheological conditions is explored, enabling highly efficient migration of white blood cells in whole blood and achieving high-throughput separation of the cells (processing 1 mL of whole blood less than 7 min). In the separated cell population, the composition of lymphocyte subpopulations is well preserved, and T cells secrete cytokines without any functional impairment. On the basis of the results, this microfluidic platform is a promising tool for the rapid enrichment of white blood cells, and it is useful for functional and phenotypic analyses of peripheral white blood cells. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

The Impact of Sex, Puberty, and Hormones on White Matter Microstructure in Adolescents

PubMed Central

Herting, Megan M.; Maxwell, Emily C.; Irvine, Christy

2012-01-01

Background: During adolescence, numerous factors influence the organization of the brain. It is unclear what influence sex and puberty have on white matter microstructure, as well as the role that rapidly increasing sex steroids play. Methods: White matter microstructure was examined in 77 adolescents (ages 10–16) using diffusion tensor imaging. Multiple regression analyses were performed to examine the relationships between fractional anisotropy (FA) and mean diffusivity (MD) and sex, puberty, and their interaction, controlling for age. Follow-up analyses determined if sex steroids predicted microstructural characteristics in sexually dimorphic and pubertal-related white matter regions, as well as in whole brain. Results: Boys had higher FA in white matter carrying corticospinal, long-range association, and cortico-subcortical fibers, and lower MD in frontal and temporal white matter compared with girls. Pubertal development was related to higher FA in the insula, while a significant sex-by-puberty interaction was seen in superior frontal white matter. In boys, testosterone predicted white matter integrity in sexually dimorphic regions as well as whole brain FA, whereas estradiol showed a negative relationship with FA in girls. Conclusions: Sex differences and puberty uniquely relate to white matter microstructure in adolescents, which can partially be explained by sex steroids. PMID:22002939

Quantitative susceptibility mapping as a biomarker for evaluating white matter alterations in Parkinson's disease.

PubMed

Guan, Xiaojun; Huang, Peiyu; Zeng, Qiaoling; Liu, Chunlei; Wei, Hongjiang; Xuan, Min; Gu, Quanquan; Xu, Xiaojun; Wang, Nian; Yu, Xinfeng; Luo, Xiao; Zhang, Minming

2018-02-07

Myelinated white matter showing diamagnetic susceptibility is important for information transfer in the brain. In Parkinson's disease (PD), the white matter is also suffering degenerative alterations. Quantitative susceptibility mapping (QSM) is a novel technique for noninvasive assessment of regional white matter ultrastructure, and provides different information of white matter in addition to standard diffusion tensor imaging (DTI). In this study, we used QSM to detect spatial white matter alterations in PD patients (n = 65) and age- and sex-matched normal controls (n = 46). Voxel-wise tract-based spatial statistics were performed to analyze QSM and DTI data. QSM showed extensive white matter involvement-including regions adjacent to the frontal, parietal, and temporal lobes-in PD patients, which was more widespread than that observed using DTI. Both QSM and DTI showed similar alterations in the left inferior longitudinal fasciculus and right cerebellar hemisphere. Further, alterations in the white matter were correlated with motor impairment and global disease severity in PD patients. We suggest that QSM may provide a novel approach for detecting white matter alterations and underlying network disruptions in PD. Further, the combination of QSM and DTI would provide a more complete evaluation of the diseased brain by analyzing different biological tissue properties.

Red flag on the white reporter: a versatile insulator abuts the white gene in Drosophila and is omnipresent in mini-white constructs.

PubMed

Chetverina, Darya; Savitskaya, Ekaterina; Maksimenko, Oksana; Melnikova, Larisa; Zaytseva, Olga; Parshikov, Alexander; Galkin, Alexander V; Georgiev, Pavel

2008-02-01

Much of the research on insulators in Drosophila has been done with transgenic constructs using the white gene (mini-white) as reporter. Hereby we report that the sequence between the white and CG32795 genes in Drosophila melanogaster contains an insulator of a novel kind. Its functional core is within a 368 bp segment almost contiguous to the white 3'UTR, hence we name it as Wari (white-abutting resident insulator). Though Wari contains no binding sites for known insulator proteins and does not require Su(Hw) or Mod(mdg4) for its activity, it can equally well interact with another copy of Wari and with unrelated Su(Hw)-dependent insulators, gypsy or 1A2. In its natural downstream position, Wari reinforces enhancer blocking by any of the three insulators placed between the enhancer and the promoter; again, Wari-Wari, Wari-gypsy or 1A2-Wari pairing results in mutual neutralization (insulator bypass) when they precede the promoter. The distressing issue is that this element hides in all mini-white constructs employed worldwide to study various insulators and other regulatory elements as well as long-range genomic interactions, and its versatile effects could have seriously influenced the results and conclusions of many works.

Red flag on the white reporter: a versatile insulator abuts the white gene in Drosophila and is omnipresent in mini-white constructs

PubMed Central

Chetverina, Darya; Savitskaya, Ekaterina; Maksimenko, Oksana; Melnikova, Larisa; Zaytseva, Olga; Parshikov, Alexander; Galkin, Alexander V.; Georgiev, Pavel

2008-01-01

Much of the research on insulators in Drosophila has been done with transgenic constructs using the white gene (mini-white) as reporter. Hereby we report that the sequence between the white and CG32795 genes in Drosophila melanogaster contains an insulator of a novel kind. Its functional core is within a 368 bp segment almost contiguous to the white 3′UTR, hence we name it as Wari (white-abutting resident insulator). Though Wari contains no binding sites for known insulator proteins and does not require Su(Hw) or Mod(mdg4) for its activity, it can equally well interact with another copy of Wari and with unrelated Su(Hw)-dependent insulators, gypsy or 1A2. In its natural downstream position, Wari reinforces enhancer blocking by any of the three insulators placed between the enhancer and the promoter; again, Wari–Wari, Wari–gypsy or 1A2–Wari pairing results in mutual neutralization (insulator bypass) when they precede the promoter. The distressing issue is that this element hides in all mini-white constructs employed worldwide to study various insulators and other regulatory elements as well as long-range genomic interactions, and its versatile effects could have seriously influenced the results and conclusions of many works. PMID:18086699

The dimensionality of between-person differences in white matter microstructure in old age.

PubMed

Lövdén, Martin; Laukka, Erika Jonsson; Rieckmann, Anna; Kalpouzos, Grégoria; Li, Tie-Qiang; Jonsson, Tomas; Wahlund, Lars-Olof; Fratiglioni, Laura; Bäckman, Lars

2013-06-01

Between-person differences in white matter microstructure may partly generalize across the brain and partly play out differently for distinct tracts. We used diffusion-tensor imaging and structural equation modeling to investigate this issue in a sample of 260 adults aged 60-87 years. Mean fractional anisotropy and mean diffusivity of seven white matter tracts in each hemisphere were quantified. Results showed good fit of a model positing that individual differences in white matter microstructure are structured according to tracts. A general factor, although accounting for variance in the measures, did not adequately represent the individual differences. This indicates the presence of a substantial amount of tract-specific individual differences in white matter microstructure. In addition, individual differences are to a varying degree shared between tracts, indicating that general factors also affect white matter microstructure. Age-related differences in white matter microstructure were present for all tracts. Correlations among tract factors did not generally increase as a function of age, suggesting that aging is not a process with homogenous effects on white matter microstructure across the brain. These findings highlight the need for future research to examine whether relations between white matter microstructure and diverse outcomes are specific or general. Copyright © 2011 Wiley Periodicals, Inc.

Hybrid structure of white layer in high carbon steel - Formation mechanism and its properties.

PubMed

Hossain, Rumana; Pahlevani, Farshid; Witteveen, Evelien; Banerjee, Amborish; Joe, Bill; Prusty, B Gangadhara; Dippenaar, Rian; Sahajwalla, Veena

2017-10-16

This study identifies for the first time, the hybrid structure of the white layer in high carbon steel and describes its formation mechanism and properties. The so-called 'white layer' in steel forms during high strain rate deformation and appears featureless under optical microscopy. While many researchers have investigated the formation of the white layer, there has been no definitive study, nor is there sufficient evidence to fully explain the formation, structure and properties of the layer. In this study, the formation, morphology and mechanical properties of the white layer was determined following impact testing, using a combination of optical and SE- microscopy, HR-EBSD, TKD and TEM as well as nano-indentation hardness measurements and FE modelling. The phase transformation and recrystallization within and near the white layer was also investigated. The microstructure of the steel in the white layer consisted of nano-sized grains of martensite. A very thin layer of austenite with nano sized grains was identified within the white layer by HR-EBSD techniques, the presence of which is attributed to a thermally-induced reverse phase transformation. Overall, the combination of phase transformations, strain hardening and grain refinement led to a hybrid structure and an increase in hardness of the white layer.

The population of single and binary white dwarfs of the Galactic bulge

NASA Astrophysics Data System (ADS)

Torres, S.; García-Berro, E.; Cojocaru, R.; Calamida, A.

2018-05-01

Recent Hubble Space Telescope observations have unveiled the white dwarf cooling sequence of the Galactic bulge. Although the degenerate sequence can be well fitted employing the most up-to-date theoretical cooling sequences, observations show a systematic excess of red objects that cannot be explained by the theoretical models of single carbon-oxygen white dwarfs of the appropriate masses. Here, we present a population synthesis study of the white dwarf cooling sequence of the Galactic bulge that takes into account the populations of both single white dwarfs and binary systems containing at least one white dwarf. These calculations incorporate state-of-the-art cooling sequences for white dwarfs with hydrogen-rich and hydrogen-deficient atmospheres, for both white dwarfs with carbon-oxygen and helium cores, and also take into account detailed prescriptions of the evolutionary history of binary systems. Our Monte Carlo simulator also incorporates all the known observational biases. This allows us to model with a high degree of realism the white dwarf population of the Galactic bulge. We find that the observed excess of red stars can be partially attributed to white dwarf plus main sequence binaries, and to cataclysmic variables or dwarf novae. Our best fit is obtained with a higher binary fraction and an initial mass function slope steeper than standard values, as well as with the inclusion of differential reddening and blending. Our results also show that the possible contribution of double degenerate systems or young and thick-discbulge stars is negligible.

White Dwarfs in the SDSS Photometric Footprint

NASA Astrophysics Data System (ADS)

Gentile Fusillo, N. P.; Girven, J.; Gänsicke, B.

2013-01-01

Attempts to create a homogeneous catalogue of white dwarfs have always been faced with the challenge posed by the intrinsic faintness of these objects. In recent years, thanks to large area surveys like the Sloan Digital Sky Survey (SDSS), the size of the known white dwarf population has increased dramatically, but, in order to carry out a statical study on the population of white dwarfs, it is necessary to have a reliable and well-defined selection method. We present a method which uses cuts in colour-colour space to select from DR7 16785 bright (g ≤ 19) photometric DA white dwarf candidates (Girven et al. 2011). The selection is 62% efficient in returning DA white dwarfs and produces a DA sample which is 95% complete for Teff > 8000 K. This sample contains 4636 spectroscopically confirmed DA white dwarfs; i.e. a ˜70% increase compared to Eisenstein et al.'s sample. As a first application of the SDSS DR7 DA candidates sample we cross correlated it with Data Release 8 of UKIDSS Large Area Survey with the aim of identifying white dwarfs which exhibit an infrared excess consistent with the presence of low mass stellar companions or dusty debris discs. Our current work aims to extend the photometric selection to all types of white dwarfs, using reduced proper motion as a further constrain. We expect to find a total of ˜20 000 photometric white dwarf candidates with g ≤ 19 in the footprint of SDSS DR8.

Misclassification of survey responses and black-white disparity in mammography use, Behavioral Risk Factor Surveillance System, 1995-2006.

PubMed

Njai, Rashid; Siegel, Paul Z; Miller, Jacqueline W; Liao, Youlian

2011-05-01

The validity of self-reported data for mammography differ by race. We assessed the effect of racial differences in the validity of age-adjusted, self-reported mammography use estimates from the Behavioral Risk Factor Surveillance System (BRFSS) from 1995 through 2006 to determine whether misclassification (inaccurate survey question response) may have obscured actual racial disparities. We adjusted BRFSS mammography use data for age by using 2000 census estimates and for misclassification by using the following formula: (estimated prevalence - 1 + specificity) / (sensitivity + specificity - 1). We used values reported in the literature for the formula (sensitivity = 0.97 for both black and white women, specificity = 0.49 and 0.62, respectively, for black and white women). After adjustment for misclassification, the percentage of women aged 40 years or older in 1995 who reported receiving a mammogram during the previous 2 years was 54% among white women and 41% among black women, compared with 70% among both white and black women after adjustment for age only. In 2006, the percentage after adjustment for misclassification was 65% among white women and 59% among black women compared with 77% among white women and 78% among black women after adjustment for age only. Self-reported data overestimate mammography use - more so for black women than for white women. After adjustment for respondent misclassification, neither white women nor black women had attained the Healthy People 2010 objective (≥ 70%) by 2006, and a disparity between white and black women emerged.

Increased white matter metabolic rates in autism spectrum disorder and schizophrenia.

PubMed

Mitelman, Serge A; Buchsbaum, Monte S; Young, Derek S; Haznedar, M Mehmet; Hollander, Eric; Shihabuddin, Lina; Hazlett, Erin A; Bralet, Marie-Cecile

2017-11-22

Both autism spectrum disorder (ASD) and schizophrenia are often characterized as disorders of white matter integrity. Multimodal investigations have reported elevated metabolic rates, cerebral perfusion and basal activity in various white matter regions in schizophrenia, but none of these functions has previously been studied in ASD. We used 18 fluorodeoxyglucose positron emission tomography to compare white matter metabolic rates in subjects with ASD (n = 25) to those with schizophrenia (n = 41) and healthy controls (n = 55) across a wide range of stereotaxically placed regions-of-interest. Both subjects with ASD and schizophrenia showed increased metabolic rates across the white matter regions assessed, including internal capsule, corpus callosum, and white matter in the frontal and temporal lobes. These increases were more pronounced, more widespread and more asymmetrical in subjects with ASD than in those with schizophrenia. The highest metabolic increases in both disorders were seen in the prefrontal white matter and anterior limb of the internal capsule. Compared to normal controls, differences in gray matter metabolism were less prominent and differences in adjacent white matter metabolism were more prominent in subjects with ASD than in those with schizophrenia. Autism spectrum disorder and schizophrenia are associated with heightened metabolic activity throughout the white matter. Unlike in the gray matter, the vector of white matter metabolic abnormalities appears to be similar in ASD and schizophrenia, may reflect inefficient functional connectivity with compensatory hypermetabolism, and may be a common feature of neurodevelopmental disorders.

Development of Tract-Specific White Matter Pathways During Early Reading Development in At-Risk Children and Typical Controls.

PubMed

Wang, Yingying; Mauer, Meaghan V; Raney, Talia; Peysakhovich, Barbara; Becker, Bryce L C; Sliva, Danielle D; Gaab, Nadine

2017-04-01

Developmental dyslexia is a neurodevelopmental disorder with a strong genetic basis. Previous studies observed white matter alterations in the left posterior brain regions in adults and school-age children with dyslexia. However, no study yet has examined the development of tract-specific white matter pathways from the pre-reading to the fluent reading stage in children at familial risk for dyslexia (FHD+) versus controls (FHD-). This study examined white matter integrity at pre-reading, beginning, and fluent reading stages cross-sectionally ( n = 78) and longitudinally (n = 45) using an automated fiber-tract quantification method. Our findings depict white matter alterations and atypical lateralization of the arcuate fasciculus at the pre-reading stage in FHD+ versus FHD- children. Moreover, we demonstrate faster white matter development in subsequent good versus poor readers and a positive association between white matter maturation and reading development using a longitudinal design. Additionally, the combination of white matter maturation, familial risk, and psychometric measures best predicted later reading abilities. Furthermore, within FHD+ children, subsequent good readers exhibited faster white matter development in the right superior longitudinal fasciculus compared with subsequent poor readers, suggesting a compensatory mechanism. Overall, our findings highlight the importance of white matter pathway maturation in the development of typical and atypical reading skills. Published by Oxford University Press 2016. This work is written by (a) US Government employee(s) and is in the public domain in the US.

Effects of Mitigative Measures on Productivity of White Sturgeon Populations in the Columbia River Downstream from McNary Dam; Determine Status and Habitat Requirements of White Sturgeon Populations in the Columbia and Snake Rivers Upstream from the McNary Dam, 1994-1995 Annual Report.

DOE Office of Scientific and Technical Information (OSTI.GOV)

Beiningen, Kirk T.

The author reports on progress from April 1994 through March 1995 of research on white sturgeon in the lower Columbia River. The study began in July 1986 and is a cooperative effort of federal, state and tribal fisheries entities to determine the (1) the status and habitat requirements, and (2) the effects of mitigative measures on productivity of white sturgeon populations in the lower Columbia River. This report describes activities conducted during the third year of this contract's second phase. Information was collected, analyzed, and evaluated on sub-adult and adult life histories, population dynamics, quantity and quality of habitat, andmore » production enhancement strategies. The report is divided into sections that evaluate success of developing and implementing a management plan for white sturgeon; evaluate growth, mortality, and contributions to fisheries of juvenile white sturgeon transplanted from areas downstream; describe the life history and population dynamics of sub-adult a nd adult white sturgeon; define habitat requirements for spawning and rearing of white sturgeon and quantify the extent of habitat available; describe reproductive and early life history characteristics of white sturgeon; and quantify physical habitat used by spawning and rearing white sturgeon in the free-flowing portion of the Columbia River.« less

White whale ( Delphinapterus leucas) distribution in Onega Bay of the White Sea in the summer

NASA Astrophysics Data System (ADS)

Andrianov, V. V.; Bel'Kovich, V. M.; Lukin, L. R.

2009-02-01

Data on the white whale distribution in Onega Bay of the White Sea obtained during route and stationary observations in the summer of 2003-2006 are given. The presence of three regions of summer habitation of local “nonmigratory” white whale reproductive schools is confirmed. The minimum abundance of the “zhizhginskoe” (northeastern) school is 60 individuals, and the minimum abundance of the “myagostrovskoe” (western) is 50 individuals. The abundance of the best studied “southern” school is close to 120-130 individuals. One more region of white whale concentration (with an abundance of up to 40 individuals) (the eastern one; Cape Letniy Orlov-Cape Chesmenskiy) was found. The localization of single reproductive schools (RS) is due to a number of factors: the morphometry of the shores and bottom, the hydrological regime, and the character of the coastal tidal currents. The white whale distribution in the southern part of Onega Bay in the summer (June-July) is of discontinuous character with concentrations near cape Glubokiy and some other adjacent parts. The coefficient of the white whale attendance in the Cape Glubokiy area varied from 42.5 to 67.4% during the years of the studies (2003-2006). The character of the distribution, the direction of the relocations, and the animals’ behavior peculiarities indicate that the white whales of the southern part of Onega Bay of the White Sea form a rather stable school community of a few (5-6) locally distributed small family groups during the summer.

Comparative study on resistant starch, amilose content and glycaemic index after precooked process in white rice

NASA Astrophysics Data System (ADS)

Pratiwi, V. N.

2018-03-01

Rice is a staple food and regarded as a useful carbohydrate source. In general rice is high in glycaemic index (GI) and low colonic fermentation. People are aware of the alterations in blood glucose levels or glycaemic index after consuming rice. Resistant starch (RS) and amylose content play an important role in controlling GI. GI and RS content have been established as important indicators of starch digestibility. The aim of this study was to determine the precooked process with hydrothermal (boiling at 80°C, 10 minutes) and cooling process with low temperature (4°C, 1 h) to increase potential content of RS and decrease of glycaemic index of white rice. There were two stages of this research, 1) preparation of white rice with precooked process; 2) analysis of precooked white rice characteristics (resistant starch, amylose content, and estimated glycaemic index). The result of analysis on precooked white rice showed an increased RS content (1.11%) and white rice (0.99%), but the difference was not statistically significant. The amylose content increased significantly after precooked process in white rice (24.70%) compared with white rice (20.89%). Estimated glycaemic index (EGI) decreased after precooked proses (65.63%) but not significant as compared to white rice (66.47%). From the present study it was concluded that precooked process had no significant impact on increasing RS and decreasing EGI of white rice. This may be due to the relatively short cooling time (1hour) in 4°C.

Temporal trends in stroke incidence in South Asian, Chinese and white patients: A population based analysis.

PubMed

Khan, Nadia A; McAlister, Finlay A; Pilote, Louise; Palepu, Anita; Quan, Hude; Hill, Michael D; Fang, Jiming; Kapral, Moira K

2017-01-01

Little is known about potential ethnic differences in stroke incidence. We compared incidence and time trends of ischemic stroke and primary intracerebral hemorrhage in South Asian, Chinese and white persons in a population-based study. Population based census and administrative data analysis in the provinces of Ontario and British Columbia, Canada using validated ICD 9/ICD 10 coding for acute ischemic and hemorrhagic stroke (1997-2010). There were 3290 South Asians, 4444 Chinese and 160944 white patients with acute ischemic stroke and 535 South Asian, 1376 Chinese and 21842 white patients with intracerebral hemorrhage. South Asians were younger than whites at onset of stroke (70 vs. 74 years for ischemic and 67 vs. 71 years for hemorrhagic stroke). Age and sex adjusted ischemic stroke incidence in 2010 was 43% lower in Chinese and 63% lower in South Asian than in White patients. Age and sex adjusted intracerebral hemorrhage incidence was 18% higher in Chinese patients, and 66% lower in South Asian relative to white patients. Stroke incidence declined in all ethnic groups (relative reduction 69% in South Asians, 25% in Chinese, and 34% in white patients for ischemic stroke and for intracerebral hemorrhage, 79% for South Asians, 51% for Chinese and 30% in white patients). Although stroke rates declined across all ethnic groups, these rates differed significantly by ethnicity. Further study is needed to understand mechanisms underlying the higher ischemic stroke incidence in white patients and intracerebral hemorrhage in Chinese patients.

The clinical importance of white matter hyperintensities on brain magnetic resonance imaging: systematic review and meta-analysis.

PubMed

Debette, Stéphanie; Markus, H S

2010-07-26

To review the evidence for an association of white matter hyperintensities with risk of stroke, cognitive decline, dementia, and death. Systematic review and meta-analysis. PubMed from 1966 to 23 November 2009. Prospective longitudinal studies that used magnetic resonance imaging and assessed the impact of white matter hyperintensities on risk of incident stroke, cognitive decline, dementia, and death, and, for the meta-analysis, studies that provided risk estimates for a categorical measure of white matter hyperintensities, assessing the impact of these lesions on risk of stroke, dementia, and death. Population studied, duration of follow-up, method used to measure white matter hyperintensities, definition of the outcome, and measure of the association of white matter hyperintensities with the outcome. 46 longitudinal studies evaluated the association of white matter hyperintensities with risk of stroke (n=12), cognitive decline (n=19), dementia (n=17), and death (n=10). 22 studies could be included in a meta-analysis (nine of stroke, nine of dementia, eight of death). White matter hyperintensities were associated with an increased risk of stroke (hazard ratio 3.3, 95% confidence interval 2.6 to 4.4), dementia (1.9, 1.3 to 2.8), and death (2.0, 1.6 to 2.7). An association of white matter hyperintensities with a faster decline in global cognitive performance, executive function, and processing speed was also suggested. White matter hyperintensities predict an increased risk of stroke, dementia, and death. Therefore white matter hyperintensities indicate an increased risk of cerebrovascular events when identified as part of diagnostic investigations, and support their use as an intermediate marker in a research setting. Their discovery should prompt detailed screening for risk factors of stroke and dementia.

Frequency and determinants of white coat hypertension in mild to moderate hypertension: a primary care-based study. Monitorización Ambulatoria de la Presión Arterial (MAPA)-Area 5 Working Group.

PubMed

Martínez, M A; García-Puig, J; Martín, J C; Guallar-Castillón, P; Aguirre de Cárcer, A; Torre, A; Armada, E; Nevado, A; Madero, R S

1999-03-01

Most of the previous studies on white coat hypertension were performed in hypertension clinics or academic settings and included relatively small series of patients. Consequently, the prevalence of white coat hypertension in primary care settings and the clinical and epidemiologic characteristics of this subgroup of patients are not well known. We performed this study to estimate the frequency of white coat hypertension in a population of mildly to moderately hypertensive subjects attended in a primary care setting and to examine possible epidemiologic and clinical factors that may identify these patients. Patients included in the study underwent clinical interview, measurement of clinic blood pressure (BP) on three visits, determination of serum lipids, glucose, uric acid, and urinary albumin excretion, 24-h ambulatory BP monitoring, and M-mode and Doppler echocardiography. Patients were classified as white coat hypertensives if their daytime ambulatory BP were < 135/85 mm Hg. We studied 345 patients, 136 (39%) of whom were diagnosed with white coat hypertension. The frequency of white coat hypertension was inversely proportional to the severity of clinic BP values. The diagnosis of white coat hypertension was independently associated with female gender and low educational level. Left ventricular mass index and urinary albumin excretion were lower in the white-coat hypertensive group compared with the group with sustained hypertension. Our results show that a high proportion of patients with mild to moderate hypertension attended in a primary care setting have white coat hypertension. Some clinical characteristics may be helpful in the identification of this group of subjects. White coat hypertensives show less target-organ damage than sustained hypertensive patients.

A radio-pulsing white dwarf binary star.

PubMed

Marsh, T R; Gänsicke, B T; Hümmerich, S; Hambsch, F-J; Bernhard, K; Lloyd, C; Breedt, E; Stanway, E R; Steeghs, D T; Parsons, S G; Toloza, O; Schreiber, M R; Jonker, P G; van Roestel, J; Kupfer, T; Pala, A F; Dhillon, V S; Hardy, L K; Littlefair, S P; Aungwerojwit, A; Arjyotha, S; Koester, D; Bochinski, J J; Haswell, C A; Frank, P; Wheatley, P J

2016-09-15

White dwarfs are compact stars, similar in size to Earth but approximately 200,000 times more massive. Isolated white dwarfs emit most of their power from ultraviolet to near-infrared wavelengths, but when in close orbits with less dense stars, white dwarfs can strip material from their companions and the resulting mass transfer can generate atomic line and X-ray emission, as well as near- and mid-infrared radiation if the white dwarf is magnetic. However, even in binaries, white dwarfs are rarely detected at far-infrared or radio frequencies. Here we report the discovery of a white dwarf/cool star binary that emits from X-ray to radio wavelengths. The star, AR Scorpii (henceforth AR Sco), was classified in the early 1970s as a δ-Scuti star, a common variety of periodic variable star. Our observations reveal instead a 3.56-hour period close binary, pulsing in brightness on a period of 1.97 minutes. The pulses are so intense that AR Sco's optical flux can increase by a factor of four within 30 seconds, and they are also detectable at radio frequencies. They reflect the spin of a magnetic white dwarf, which we find to be slowing down on a 10 7 -year timescale. The spin-down power is an order of magnitude larger than that seen in electromagnetic radiation, which, together with an absence of obvious signs of accretion, suggests that AR Sco is primarily spin-powered. Although the pulsations are driven by the white dwarf's spin, they mainly originate from the cool star. AR Sco's broadband spectrum is characteristic of synchrotron radiation, requiring relativistic electrons. These must either originate from near the white dwarf or be generated in situ at the M star through direct interaction with the white dwarf's magnetosphere.

Astrocyte pathology in the ventral prefrontal white matter in depression.

PubMed

Rajkowska, Grazyna; Legutko, Beata; Moulana, Mohadetheh; Syed, Maryam; Romero, Damian G; Stockmeier, Craig A; Miguel-Hidalgo, Jose Javier

2018-04-07

Astrocyte functions in white matter are less well understood than in gray matter. Our recent study of white matter in ventral prefrontal cortex (vPFC) revealed alterations in expression of myelin-related genes in major depressive disorder (MDD). Since white matter astrocytes maintain myelin, we hypothesized that morphometry of these cells will be altered in MDD in the same prefrontal white matter region in which myelin-related genes are altered. White matter adjacent to vPFC was examined in 25 MDD and 21 control subjects. Density and size of GFAP-immunoreactive (-ir) astrocyte cell bodies was measured. The area fraction of GFAP-ir astrocytes (cell bodies + processes) was also estimated. GFAP mRNA expression was determined using qRT-PCR. The density of GFAP-ir astrocytes was also measured in vPFC white matter of rats subjected to chronic unpredictable stress (CUS) and control animals. Fibrous and smooth GFAP-ir astrocytes were distinguished in human white matter. The density of both types of astrocytes was significantly decreased in MDD. Area fraction of GFAP immunoreactivity was significantly decreased in MDD, but mean soma size remained unchanged. Expression of GFAP mRNA was significantly decreased in MDD. In CUS rats there was a significant decrease in astrocyte density in prefrontal white matter. The decrease in density and area fraction of white matter astrocytes and GFAP mRNA in MDD may be linked to myelin pathology previously noted in these subjects. Astrocyte pathology may contribute to axon disturbances in axon integrity reported by neuroimaging studies in MDD and interfere with signal conduction in the white matter. Copyright © 2018. Published by Elsevier Ltd.

White matter hyperintensities and headache: A population-based imaging study (HUNT MRI).

PubMed

Honningsvåg, Lasse-Marius; Håberg, Asta Kristine; Hagen, Knut; Kvistad, Kjell Arne; Stovner, Lars Jacob; Linde, Mattias

2018-01-01

Objective To examine the relationship between white matter hyperintensities and headache. Methods White matter hyperintensities burden was assessed semi-quantitatively using Fazekas and Scheltens scales, and by manual and automated volumetry of MRI in a sub-study of the general population-based Nord-Trøndelag Health Study (HUNT MRI). Using validated questionnaires, participants were categorized into four cross-sectional headache groups: Headache-free (n = 551), tension-type headache (n = 94), migraine (n = 91), and unclassified headache (n = 126). Prospective questionnaire data was used to further categorize participants into groups according to the evolution of headache during the last 12 years: Stable headache-free, past headache, new onset headache, and persistent headache. White matter hyperintensities burden was compared across headache groups using adjusted multivariate regression models. Results Individuals with tension-type headache were more likely to have extensive white matter hyperintensities than headache-free subjects, with this being the case across all methods of white matter hyperintensities assessment (Scheltens scale: Odds ratio, 2.46; 95% CI, 1.44-4.20). Migraine or unclassified headache did not influence the odds of having extensive white matter hyperintensities. Those with new onset headache were more likely to have extensive white matter hyperintensities than those who were stable headache-free (Scheltens scale: Odds ratio, 2.24; 95% CI, 1.13-4.44). Conclusions Having tension-type headache or developing headache in middle age was linked to extensive white matter hyperintensities. These results were similar across all methods of assessing white matter hyperintensities. If white matter hyperintensities treatment strategies emerge in the future, this association should be taken into consideration.

Socioeconomic Status and Self-Rated Oral Health; Diminished Return among Hispanic Whites.

PubMed

Assari, Shervin

2018-04-24

Background. An extensive body of knowledge has documented weaker health effects of socio-economic status (SES) for Blacks compared to Whites, a phenomenon also known as Blacks’ diminished return. It is, however, unknown whether the same diminished return also holds for other ethnic minorities such as Hispanics or not. Aim. Using a nationally representative sample, the current study aimed to compare Non-Hispanic and Hispanic Whites for the effects of SES on self-rated oral health. Methods. For the current cross-sectional study, we used data from the Collaborative Psychiatric Epidemiology Surveys (CPES), 2001⁻2003. With a nationally representative sampling, CPES included 11,207 adults who were either non-Hispanic Whites ( n = 7587) or Hispanic Whites ( n = 3620. The dependent variable was self-rated oral health, treated as dichotomous measure. Independent variables were education, income, employment, and marital status. Ethnicity was the focal moderator. Age and gender were covariates. Logistic regressions were used for data analysis. Results. Education, income, employment, and marital status were associated with oral health in the pooled sample. Although education, income, employment, and marital status were associated with oral health in non-Hispanic Whites, none of these associations were found for Hispanic Whites. Conclusion. In a similar pattern to Blacks’ diminished return, differential gain of SES indicators exists between Hispanic and non-Hispanic Whites, with a disadvantage for Hispanic Whites. Diminished return of SES should be regarded as a systemically neglected contributing mechanism behind ethnic oral health disparities in the United States. Replication of Blacks’ diminished return for Hispanics suggests that these processes are not specific to ethnic minority groups, and non-White groups gain less because they are not enjoying the privilege and advantage of Whites.

Evaluation of cortical local field potential diffusion in stereotactic electro-encephalography recordings: A glimpse on white matter signal.

PubMed

Mercier, Manuel R; Bickel, Stephan; Megevand, Pierre; Groppe, David M; Schroeder, Charles E; Mehta, Ashesh D; Lado, Fred A

2017-02-15

While there is a strong interest in meso-scale field potential recording using intracranial electroencephalography with penetrating depth electrodes (i.e. stereotactic EEG or S-EEG) in humans, the signal recorded in the white matter remains ignored. White matter is generally considered electrically neutral and often included in the reference montage. Moreover, re-referencing electrophysiological data is a critical preprocessing choice that could drastically impact signal content and consequently the results of any given analysis. In the present stereotactic electroencephalography study, we first illustrate empirically the consequences of commonly used references (subdermal, white matter, global average, local montage) on inter-electrode signal correlation. Since most of these reference montages incorporate white matter signal, we next consider the difference between signals recorded in cortical gray matter and white matter. Our results reveal that electrode contacts located in the white matter record a mixture of activity, with part arising from the volume conduction (zero time delay) of activity from nearby gray matter. Furthermore, our analysis shows that white matter signal may be correlated with distant gray matter signal. While residual passive electrical spread from nearby matter may account for this relationship, our results suggest the possibility that this long distance correlation arises from the white matter fiber tracts themselves (i.e. activity from distant gray matter traveling along axonal fibers with time lag larger than zero); yet definitive conclusions about the origin of the white matter signal would require further experimental substantiation. By characterizing the properties of signals recorded in white matter and in gray matter, this study illustrates the importance of including anatomical prior knowledge when analyzing S-EEG data. Copyright © 2017 Elsevier Inc. All rights reserved.

White matter microstructure mediates the relationship between cardiorespiratory fitness and spatial working memory in older adults.

PubMed

Oberlin, Lauren E; Verstynen, Timothy D; Burzynska, Agnieszka Z; Voss, Michelle W; Prakash, Ruchika Shaurya; Chaddock-Heyman, Laura; Wong, Chelsea; Fanning, Jason; Awick, Elizabeth; Gothe, Neha; Phillips, Siobhan M; Mailey, Emily; Ehlers, Diane; Olson, Erin; Wojcicki, Thomas; McAuley, Edward; Kramer, Arthur F; Erickson, Kirk I

2016-05-01

White matter structure declines with advancing age and has been associated with a decline in memory and executive processes in older adulthood. Yet, recent research suggests that higher physical activity and fitness levels may be associated with less white matter degeneration in late life, although the tract-specificity of this relationship is not well understood. In addition, these prior studies infrequently associate measures of white matter microstructure to cognitive outcomes, so the behavioral importance of higher levels of white matter microstructural organization with greater fitness levels remains a matter of speculation. Here we tested whether cardiorespiratory fitness (VO2max) levels were associated with white matter microstructure and whether this relationship constituted an indirect pathway between cardiorespiratory fitness and spatial working memory in two large, cognitively and neurologically healthy older adult samples. Diffusion tensor imaging was used to determine white matter microstructure in two separate groups: Experiment 1, N=113 (mean age=66.61) and Experiment 2, N=154 (mean age=65.66). Using a voxel-based regression approach, we found that higher VO2max was associated with higher fractional anisotropy (FA), a measure of white matter microstructure, in a diverse network of white matter tracts, including the anterior corona radiata, anterior internal capsule, fornix, cingulum, and corpus callosum (PFDR-corrected<.05). This effect was consistent across both samples even after controlling for age, gender, and education. Further, a statistical mediation analysis revealed that white matter microstructure within these regions, among others, constituted a significant indirect path between VO2max and spatial working memory performance. These results suggest that greater aerobic fitness levels are associated with higher levels of white matter microstructural organization, which may, in turn, preserve spatial memory performance in older adulthood. Copyright © 2015 Elsevier Inc. All rights reserved.

Pinpointing the sources of the Asian mortality advantage in the USA.

PubMed

Acciai, Francesco; Noah, Aggie J; Firebaugh, Glenn

2015-10-01

Asian-Americans outlive whites by an average of nearly 8 years. By determining the sources of the Asian mortality advantage, we can pinpoint where there is the greatest potential for raising the life expectancy of whites and other groups in the USA. Our analyses include all Asian and white deaths in the USA between 2006 and 2010, from the Center for Disease Control. Using the International Classification of Diseases (V.10), we code causes of deaths into 19 categories, based on the most common causes as well as causes particularly relevant to racial differences. We then create life tables and apply a newly-developed demographic method to determine whether Asians have longer life expectancy because they are less likely than whites to die of causes of death that strike at younger ages, or because they tend to outlive whites regardless of cause of death. Nearly 90% of the Asian-white life expectancy gap is attributable to the fact that Asians tend to outlive whites regardless of the cause of death. The causes that contribute the most to the gap are heart disease (24%) and cancers (18%). Men contribute somewhat more to the gap than women do (55% vs 45%), primarily because Asian-white differences in mortality are greater among men than among women with respect to suicide, traffic accidents and accidental poisoning. For almost all causes of death, Asian victims tend to be older than white victims. The greatest potential for raising the life expectancy of whites to that of Asians, then, resides in efforts that effectively increase whites' average age at death for the most common causes of death. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

DA white dwarfs from the LSS-GAC survey DR1: the preliminary luminosity and mass functions and formation rate

NASA Astrophysics Data System (ADS)

Rebassa-Mansergas, A.; Liu, X.-W.; Cojocaru, R.; Yuan, H.-B.; Torres, S.; García-Berro, E.; Xiang, M.-X.; Huang, Y.; Koester, D.; Hou, Y.; Li, G.; Zhang, Y.

2015-06-01

Modern large-scale surveys have allowed the identification of large numbers of white dwarfs. However, these surveys are subject to complicated target selection algorithms, which make it almost impossible to quantify to what extent the observational biases affect the observed populations. The LAMOST (Large Sky Area Multi-Object Fiber Spectroscopic Telescope) Spectroscopic Survey of the Galactic anticentre (LSS-GAC) follows a well-defined set of criteria for selecting targets for observations. This advantage over previous surveys has been fully exploited here to identify a small yet well-characterized magnitude-limited sample of hydrogen-rich (DA) white dwarfs. We derive preliminary LSS-GAC DA white dwarf luminosity and mass functions. The space density and average formation rate of DA white dwarfs we derive are 0.83 ± 0.16 × 10-3 pc-3 and 5.42 ± 0.08 × 10-13 pc-3 yr-1, respectively. Additionally, using an existing Monte Carlo population synthesis code we simulate the population of single DA white dwarfs in the Galactic anticentre, under various assumptions. The synthetic populations are passed through the LSS-GAC selection criteria, taking into account all possible observational biases. This allows us to perform a meaningful comparison of the observed and simulated distributions. We find that the LSS-GAC set of criteria is highly efficient in selecting white dwarfs for spectroscopic observations (80-85 per cent) and that, overall, our simulations reproduce well the observed luminosity function. However, they fail at reproducing an excess of massive white dwarfs present in the observed mass function. A plausible explanation for this is that a sizable fraction of massive white dwarfs in the Galaxy are the product of white dwarf-white dwarf mergers.

Improving foaming properties of yolk-contaminated egg albumen by basic soy protein.

PubMed

Wang, Guang; Wang, Tong

2009-10-01

Yolk contamination of egg white is a common problem in the egg breaking industry. Foaming properties of egg white protein are affected by such contamination, but proteins of basic nature may restore the foaming properties of the yolk-contaminated egg white protein. The purpose of this study was to chemically modify a soy protein, that is, to esterify the acidic groups on the protein and to study the potential of such modified protein in improving foaming. We showed that the modification changed the isoelectric point of soy protein isolate (SPI) from 4.5 to about 10. Sonication was proven to be a very effective means to redisperse the methanol-denatured soy protein during reaction, as shown by the improved solubility profile. Such modified basic protein, that is, the sonicated-modified SPI (SMSPI), when added to the yolk-contaminated (at 0.4% level, as-is basis) egg white, gave significantly improved foaming properties. We have shown that the slight change in pH due to the addition of SMSPI was not the reason for improved foaming performance; instead, the modified protein itself was the main reason for such improvement. Addition of SMSPI increased the foaming performance of both pure egg white and yolk-contaminated egg white. SMSPI consistently performed better than the unmodified SPI for improving foaming. Addition of SMSPI (16%, based on dry egg white, and 1.6% based on liquid egg white) fully restored foam expansion and foam liquid stability of 0.4% yolk-contaminated egg white, and it even out-performed the foaming of pure white protein. Therefore, a feasible solution to restore the foaming properties of yolk-contaminated egg white has been identified. It is expected that such modified SPI can be used as an additive or ingredient in foaming formulation, especially when the egg white protein is suspected of lipid contamination.

ZnO-nanorods: A possible white LED phosphor

NASA Astrophysics Data System (ADS)

Sarangi, Sachindra Nath; T., Arun; Ray, Dinseh K.; Sahoo, Pratap Kumar; Nozaki, Shinji; Sugiyama, Noriyuki; Uchida, Kazuo

2017-05-01

The white light-emitting diodes (LEDs) have drawn much attention to replace conventional lighting sources because of low energy consumption, high light efficiency and long lifetime. Although the most common approach to produce white light is to combine a blue LED chip and a yellow phosphor, such a white LED cannot be used for a general lighting application, which requires a broad luminescence spectrum in the visible wavelength range. We have successfully chemically synthesized the ZnO nanorods showing intense broad luminescence in the visible wavelength range and made a white LED using the ZnO nanorods as phosphor excited with a blue LED. Their lengths and diameters were 2 - 10 μm and 200 - 800 nm, respectively. The wurtzite structure was confirmed by the x-ray diffraction measurement. The PL spectrum obtained by exciting the ZnO nanorods with the He-Cd laser has two peaks, one associated with the near band-edge recombination and the other with recombination via defects. The peak intensity of the near band-edge luminescence at 388 nm is much weaker than that of the defect-related luminescence. The latter luminescence peak ranges from 450 to 850 nm and broad enough to be used as a phosphor for a white LED. A white LED has been fabricated using a blue LED with 450 nm emission and ZnO nanorod powders. The LED performances show a white light emission and the electroluminescence measurement shows a stiff increase in white light intensity with increasing blue LED current. The Commission International de1'Eclairage (CIE) chromaticity colour coordinates of 450 nm LED pumped white emission shows a coordinate of (0.31, 0.32) for white LED at 350 mA. These results indicate that ZnO nanorods provides an alternate and effective approach to achieve high-performance white LEDs and also other optoelectronic devices.

Trends in Gypsiferous Aerosol Downwind of White Sands, New Mexico

NASA Astrophysics Data System (ADS)

White, W. H.; Trzepla, K.; Yatkin, S.; Gill, T. E.; Jin, L.

2013-12-01

White Sands is a known 'hotspot' of dust emissions in southwestern North America where an active gypsum dunefield abuts erodible playa sediments. Aerosols entrained from White Sands are sometimes visible on satellite images as distinct, light-colored plumes crossing the Sacramento Mountains to the northeast. The U.S. Forest Service operates an aerosol sampler at White Mountain in the lee of the Sacramento range as part of the IMPROVE network (Interagency Monitoring of PROtected Visual Environments). In recent years a spring pulse of sulfate aerosol has appeared at White Mountain, eclipsing the regional summer peak attributed to atmospheric reactions of sulfur dioxide emissions. A significant fraction of this spring sulfate is contributed by gypsum and other salts from White Sands, with clearly increased concentrations of calcium, strontium, and chloride. The increase in these species coincides with a drought following a period of above-average precipitation. White Sands and White Mountain thus provide an unusually well-defined natural laboratory: a climatically sensitive dust source that is both well characterized and chemically distinct from its surroundings, with a signature that remains identifiably distinct at a long-term observatory ~100 km downwind. This paper examines the routine PM2.5 (fine-particle, Dp < 2.5 um) composition data available from White Mountain and other regional IMPROVE sites (e.g. Bosque del Apache), supplemented by some elemental analysis of collocated PM10 samples. The ambient data are compared with chemical analyses of surface samples from White Sands, bulk dry dustfall and soil surface composition at White Mountain, satellite observations of dust plumes, and available meteorological records. Together, the observations document significant, episodic aeolian transport of gypsum and other salts across the Sacramento Mountains. Figure 1. Left: Monthly average concentrations of every-third-day 24h samples. Top right: MODIS image, 2/28/2012, http://earthobservatory.nasa.gov/NaturalHazards/view.php?id=77294). Bottom right: Correlation (r) matrix for 2011 daily elemental data from White Mountain (n = 105).

Characterization of egg white antibacterial properties during the first half of incubation: A comparative study between embryonated and unfertilized eggs.

PubMed

Guyot, N; Réhault-Godbert, S; Slugocki, C; Harichaux, G; Labas, V; Helloin, E; Nys, Y

2016-12-01

Egg white is an important contributor to the protection of eggs against bacterial contaminations during the first half of incubation (day zero to 12), prior to the egg white transfer into the amniotic fluid to be orally absorbed by the embryo. This protective system relies on an arsenal of antimicrobial proteins and on intrinsic physicochemical properties that are generally unfavorable for bacterial multiplication and dissemination. Some changes in these parameters can be observed in egg white during egg storage and incubation. The aim of this work was to characterize changes in the antibacterial potential of egg white in embryonated eggs (FE) during the first half of incubation using unfertilized eggs (UF) as controls. Egg white samples were collected at day zero, 4, 8, and 12 and analyzed for pH, protein concentration, and protein profile. Antibacterial properties of egg white proteins were evaluated against Listeria monocytogenes, Streptococcus uberis, Staphylococcus aureus, Escherichia coli, and Salmonella Enteritidis. During incubation, differential variations of egg white pH and protein concentrations were observed between UF and FE. At equal protein concentrations, similar activities against L. monocytogenes and S. uberis were observed for FE and UF egg white proteins. A progressive decline in these activities, however, was observed over incubation time, regardless of the egg group (UF or FE). SDS-PAGE analysis of egg white proteins during incubation revealed discrete changes in the profile of major proteins, whereas the stability of some less abundant antimicrobial proteins seemed more affected. To conclude, the antibacterial activity of egg white proteins progressively decreased during the first half of egg incubation, possibly resulting from the alteration of specific antimicrobial proteins. This apparent decline may be partly counterbalanced in embryonated eggs by the increase in egg white protein concentration. The antibacterial potential of egg white is very effective during early stages of embryonic development but its alteration during incubation suggests that extra-embryonic structures could then progressively ensure protective functions. © 2016 Poultry Science Association Inc.

Edge Density Imaging: Mapping the Anatomic Embedding of the Structural Connectome Within the White Matter of the Human Brain

PubMed Central

Owen, Julia P.; Chang, Yi-Shin; Mukherjee, Pratik

2015-01-01

The structural connectome has emerged as a powerful tool to characterize the network architecture of the human brain and shows great potential for generating important new biomarkers for neurologic and psychiatric disorders. The edges of the cerebral graph traverse white matter to interconnect cortical and subcortical nodes, although the anatomic embedding of these edges is generally overlooked in the literature. Mapping the paths of the connectome edges could elucidate the relative importance of individual white matter tracts to the overall network topology of the brain and also lead to a better understanding of the effect of regionally-specific white matter pathology on cognition and behavior. In this work, we introduce edge density imaging (EDI), which maps the number of network edges that pass through every white matter voxel. Test-retest analysis shows good to excellent reliability for edge density (ED) measurements, with consistent results using different cortical and subcortical parcellation schemes and different diffusion MR imaging acquisition parameters. We also demonstrate that ED yields complementary information to both traditional and emerging voxel-wise metrics of white matter microstructure and connectivity, including fractional anisotropy, track density, fiber orientation dispersion and neurite density. Our results demonstrate spatially ordered variations of ED throughout the white matter, notably including greater ED in posterior than anterior cerebral white matter. The EDI framework is employed to map the white matter regions that are enriched with pathways connecting rich club nodes and also those with high densities of intra-modular and inter-modular edges. We show that periventricular white matter has particularly high ED and high densities of rich club edges, which is significant for diseases in which these areas are selectively affected, ranging from white matter injury of prematurity in infants to leukoaraiosis in the elderly. Using edge betweenness centrality, we identify specific white matter regions involved in a large number of shortest paths, some containing highly connected rich club edges while others are relatively isolated within individual modules. Overall, these findings reveal an intricate relationship between white matter anatomy and the structural connectome, motivating further exploration of EDI for biomarkers of cognition and behavior. PMID:25592996

The Origin and Evolution of the White-Dwarf Stars

NASA Astrophysics Data System (ADS)

Clemens, J. C.

1994-12-01

The secret of how white dwarf stars form and evolve is hidden in their interiors. There, gravity separates the constituent elements into layers; the lighter elements float to the top and the heavier ones sink. Consequently, a white dwarf's structure depends on the quantity of the elements present. Measuring that structure can tell us about the processes which formed white dwarfs and allow us to calculate how fast they cool. The latter is indispensable for measuring the age of our galaxy using the oldest white dwarfs as chronometers. Because some white dwarfs pulsate, we can exploit the resulting luminosity variations to measure their internal structure using "asteroseismology," a procedure analogous to terrestrial seismology. Exploring white dwarf structure via asteroseismology poses a difficult observational task: acquiring essentially uninterrupted time series measurements of the brightness changes of pulsating white dwarf stars. We have accomplished this task using an instrument we developed for this purpose, the Whole Earth Telescope. By combining data from the Whole Earth Telescope with published measurements, we have detected a common pattern in the pulsation spectra of all the variable, hydrogen spectra white dwarfs (DAVs), implying that they have similar surface hydrogen layer masses. Because we have identified the degree (l) and the radial overtone (k) of the modes in the pattern detected, we have been able to compare their periods to published pulsation models to find the mass of the hydrogen layer; it is about 10^-4 times the total stellar mass. This result will require adjustments to published estimates of the age of the galaxy which use theoretical cooling times of the oldest white dwarfs as a time standard; the theoretical models typically assume much thinner hydrogen layers. We have also investigated the two classes of pulsating helium spectra white dwarfs (DOVs and DBVs). From their pulsation properties, and the mass of the hydrogen layer measured for the DAVs, we have concluded that the helium surface white dwarfs do not form via the same process as the hydrogen surface stars. There must be at least two separate channels for white dwarf formation. (SECTION: Dissertation Summary)

The Origin and Evolution of the White Dwarf Stars

NASA Astrophysics Data System (ADS)

Clemens, J. C.

1994-05-01

The secret of how white dwarf stars form and evolve is hidden in their interiors. There, gravity separates the constituent elements into layers; the lighter elements float to the top and the heavier ones sink. Consequently, a white dwarf's structure depends on the quantity of the elements present. Measuring that structure can tell us about the processes which formed white dwarfs and allow us to calculate how fast they cool. The latter is indispensable for measuring the age of our galaxy using the oldest white dwarfs as chronometers. Because some white dwarfs pulsate, we can exploit the resulting luminosity variations to measure their internal structure using asteroseismology. Exploring white dwarf structure via asteroseismology poses a difficult observational task: acquiring essentially uninterrupted time series measurements of the brightness changes of pulsating white dwarf stars. We have accomplished this task using an instrument we call the Whole Earth Telescope (WET). By combining data from the WET with published measurements, we have detected a common pattern in the pulsation spectra of all the variable, hydrogen spectra white dwarfs (DAVs), implying that they have similar surface hydrogen layer masses. Because we have identified the degree (l) and the radial overtone (k) of the modes in the pattern detected, we have been able to compare their periods to published pulsation models to find the mass of the hydrogen layer; it is about 10(-4) times the total stellar mass. This result will require adjustments to published estimates of the age of the galaxy which use theoretical cooling times of the oldest white dwarfs as a time standard; the theoretical models typically assume much thinner hydrogen layers. We have also investigated the two classes of pulsating helium spectra white dwarfs (DOVs and DBVs). From their pulsation properties, and the mass of the hydrogen layer measured for the DAVs, we have concluded that the helium surface white dwarfs do not form via the same process as the hydrogen surface stars. There must be at least two separate channels for white dwarf formation.

The origin and evolution of the white dwarf stars

NASA Astrophysics Data System (ADS)

Clemens, James Christopher

1994-01-01

The secret of how white dwarf stars form and evolve is hidden in their interiors. There, gravity separates the constituent elements into layers; the lighter elements float to the top and the heavier ones sink. Consequently, a white dwarf's structure depends on the quantity of the elements present. Measuring that structure can tell Us about the processes which formed white dwarfs and allow us to calculate how fast they cool. The latter is indispensable for measuring the age of our galaxy using the oldest white dwarfs as chronometers. Because some white dwarfs pulsate, we can exploit the resulting luminosity variations to measure their internal structure using 'asteroseismology', a procedure analogous to terrestrial seismology. Exploring white dwarf structure via asteroseismology poses a difficult observational task: acquiring essentially uninterrupted time series measurements of the brightness changes of pulsating white dwarf stars. We have accomplished this task using an instrument we developed for this purpose, the Whole Earth Telescope. By combining data from the Whole Earth Telescope with published measurements, we have detected a common pattern in the pulsation spectra of all the variable, hydrogen spectra white dwarfs (DAVs), implying that they have similar surface hydrogen layer masses. Because we have identified the degree (l) and the radial overtone (k) of the modes in the pattern detected, we have been able to compare their periods to published pulsation models to find the mass of the hydrogen layer, it is about 10-4 times the total stellar mass. This result will require adjustments to published estimates of the age of the galaxy which use theoretical cooling times of the oldest white dwarfs as a time standard; the theoretical models typically assume much thinner hydrogen layers. We have also investigated the two classes of pulsating helium spectra white dwarfs (DOVs and DBVs). From their pulsation properties and the mass of the hydrogen layer measured for the DAVs, we have concluded that the helium surface white dwarfs do not form via the same process as the hydrogen surface stars. There must be at least two separate channels for white dwarf formation.

Utility of a Multiparametric Quantitative MRI Model That Assesses Myelin and Edema for Evaluating Plaques, Periplaque White Matter, and Normal-Appearing White Matter in Patients with Multiple Sclerosis: A Feasibility Study.

PubMed

Hagiwara, A; Hori, M; Yokoyama, K; Takemura, M Y; Andica, C; Kumamaru, K K; Nakazawa, M; Takano, N; Kawasaki, H; Sato, S; Hamasaki, N; Kunimatsu, A; Aoki, S

2017-02-01

T1 and T2 values and proton density can now be quantified on the basis of a single MR acquisition. The myelin and edema in a voxel can also be estimated from these values. The purpose of this study was to evaluate a multiparametric quantitative MR imaging model that assesses myelin and edema for characterizing plaques, periplaque white matter, and normal-appearing white matter in patients with MS. We examined 3T quantitative MR imaging data from 21 patients with MS. The myelin partial volume, excess parenchymal water partial volume, the inverse of T1 and transverse T2 relaxation times (R1, R2), and proton density were compared among plaques, periplaque white matter, and normal-appearing white matter. All metrics differed significantly across the 3 groups ( P < .001). Those in plaques differed most from those in normal-appearing white matter. The percentage changes of the metrics in plaques and periplaque white matter relative to normal-appearing white matter were significantly more different from zero for myelin partial volume (mean, -61.59 ± 20.28% [plaque relative to normal-appearing white matter], and mean, -10.51 ± 11.41% [periplaque white matter relative to normal-appearing white matter]), and excess parenchymal water partial volume (13.82 × 10 3 ± 49.47 × 10 3 % and 51.33 × 10 2 ± 155.31 × 10 2 %) than for R1 (-35.23 ± 13.93% and -6.08 ± 8.66%), R2 (-21.06 ± 11.39% and -4.79 ± 6.79%), and proton density (23.37 ± 10.30% and 3.37 ± 4.24%). Multiparametric quantitative MR imaging captures white matter damage in MS. Myelin partial volume and excess parenchymal water partial volume are more sensitive to the MS disease process than R1, R2, and proton density. © 2017 by American Journal of Neuroradiology.

Implications of white striping and wooden breast abnormalities on quality traits of raw and marinated chicken meat.

PubMed

Mudalal, S; Lorenzi, M; Soglia, F; Cavani, C; Petracci, M

2015-04-01

One of the consequences of intense genetic selection for growth of poultry is the recent appearance of abnormalities in chicken breast muscles, such as white striping (characterised by superficial white striations) and wooden breast (characterised by pale and bulged areas with substantial hardness). The aim of this study was to evaluate the quality traits of chicken fillets affected by white striping and wooden breast abnormalities. In two replications, 192 fillets were divided into the following four classes: normal (n=48; absence of any visual defects), white striping (n=48, presence of white striations), wooden breast (n=48; diffusely presence of hardened areas) and white striping/wooden breast (n=48; fillets affected by both abnormalities). Morphology, raw meat texture and technological properties were assessed in both unprocessed (pH, colour, drip loss, cooking loss and cooked meat shear force) and marinated meat (marinade uptake, purge loss, cooking loss and cooked meat shear force). Fillets affected by white striping, wooden breast or both abnormalities exhibited higher breast weights compared with normal fillets (305.5, 298.7, 318.3 and 244.7 g, respectively; P<0.001). Wooden breast, either alone or in combination with white striping, was associated with a significant (P<0.001) increase of fillet thickness in the caudal area and raw meat hardness compared with both normal and the white striping abnormality, for which there was no difference. Overall, the occurrence of the individual and combined white striping and wooden breast abnormalities resulted in substantial reduction in the quality of breast meat, although these abnormalities are associated with distinct characteristics. Wooden breast fillets showed lower marinade uptake and higher cooking losses than white-striped fillets for both unprocessed and marinated meats. On the other hand, white-striped fillets showed a moderate decline in marinade and cooking yield. Fillets affected by both abnormalities had the highest (P<0.001) ultimate pH values. In contrast, the effects on colour of raw and cooked meat, drip loss, purge loss and cooked meat shear force were negligible or relatively low and of little practical importance. Thus, the presence of white striping and wooden breast abnormalities impair not only breast meat appearance but also the quality of both raw and marinated meats mainly by reducing water holding/binding abilities.

Site of delivery contribution to black-white severe maternal morbidity disparity.

PubMed

Howell, Elizabeth A; Egorova, Natalia N; Balbierz, Amy; Zeitlin, Jennifer; Hebert, Paul L

2016-08-01

The black-white maternal mortality disparity is the largest disparity among all conventional population perinatal health measures, and the mortality gap between black and white women in New York City has nearly doubled in recent years. For every maternal death, 100 women experience severe maternal morbidity, a life-threatening diagnosis, or undergo a life-saving procedure during their delivery hospitalization. Like maternal mortality, severe maternal morbidity is more common among black than white women. A significant portion of maternal morbidity and mortality is preventable, making quality of care in hospitals a critical lever for improving outcomes. Hospital variation in risk-adjusted severe maternal morbidity rates exists. The extent to which variation in hospital performance on severe maternal morbidity rates contributes to black-white disparities in New York City hospitals has not been studied. We examined the extent to which black-white differences in severe maternal morbidity rates in New York City hospitals can be explained by differences in the hospitals in which black and white women deliver. We conducted a population-based study using linked 2011-2013 New York City discharge and birth certificate datasets (n = 353,773 deliveries) to examine black-white differences in severe maternal morbidity rates in New York City hospitals. A mixed-effects logistic regression with a random hospital-specific intercept was used to generate risk-standardized severe maternal morbidity rates for each hospital (n = 40). We then assessed differences in the distributions of black and white deliveries among these hospitals. Severe maternal morbidity occurred in 8882 deliveries (2.5%) and was higher among black than white women (4.2% vs 1.5%, P < .001). After adjustment for patient characteristics and comorbidities, the risk remained elevated for black women (odds ratio, 2.02; 95% confidence interval, 1.89-2.17). Risk-standardized severe maternal morbidity rates among New York City hospitals ranged from 0.8 to 5.7 per 100 deliveries. White deliveries were more likely to be delivered in low-morbidity hospitals: 65% of white vs 23% of black deliveries occurred in hospitals in the lowest tertile for morbidity. We estimated that black-white differences in delivery location may contribute as much as 47.7% of the racial disparity in severe maternal morbidity rates in New York City. Black mothers are more likely to deliver at higher risk-standardized severe maternal morbidity hospitals than are white mothers, contributing to black-white disparities. More research is needed to understand the attributes of high-performing hospitals and to share best practices among hospitals. Copyright © 2016 Elsevier Inc. All rights reserved.

White matter hyperintensities and imaging patterns of brain ageing in the general population.

PubMed

Habes, Mohamad; Erus, Guray; Toledo, Jon B; Zhang, Tianhao; Bryan, Nick; Launer, Lenore J; Rosseel, Yves; Janowitz, Deborah; Doshi, Jimit; Van der Auwera, Sandra; von Sarnowski, Bettina; Hegenscheid, Katrin; Hosten, Norbert; Homuth, Georg; Völzke, Henry; Schminke, Ulf; Hoffmann, Wolfgang; Grabe, Hans J; Davatzikos, Christos

2016-04-01

White matter hyperintensities are associated with increased risk of dementia and cognitive decline. The current study investigates the relationship between white matter hyperintensities burden and patterns of brain atrophy associated with brain ageing and Alzheimer's disease in a large populatison-based sample (n = 2367) encompassing a wide age range (20-90 years), from the Study of Health in Pomerania. We quantified white matter hyperintensities using automated segmentation and summarized atrophy patterns using machine learning methods resulting in two indices: the SPARE-BA index (capturing age-related brain atrophy), and the SPARE-AD index (previously developed to capture patterns of atrophy found in patients with Alzheimer's disease). A characteristic pattern of age-related accumulation of white matter hyperintensities in both periventricular and deep white matter areas was found. Individuals with high white matter hyperintensities burden showed significantly (P < 0.0001) lower SPARE-BA and higher SPARE-AD values compared to those with low white matter hyperintensities burden, indicating that the former had more patterns of atrophy in brain regions typically affected by ageing and Alzheimer's disease dementia. To investigate a possibly causal role of white matter hyperintensities, structural equation modelling was used to quantify the effect of Framingham cardiovascular disease risk score and white matter hyperintensities burden on SPARE-BA, revealing a statistically significant (P < 0.0001) causal relationship between them. Structural equation modelling showed that the age effect on SPARE-BA was mediated by white matter hyperintensities and cardiovascular risk score each explaining 10.4% and 21.6% of the variance, respectively. The direct age effect explained 70.2% of the SPARE-BA variance. Only white matter hyperintensities significantly mediated the age effect on SPARE-AD explaining 32.8% of the variance. The direct age effect explained 66.0% of the SPARE-AD variance. Multivariable regression showed significant relationship between white matter hyperintensities volume and hypertension (P = 0.001), diabetes mellitus (P = 0.023), smoking (P = 0.002) and education level (P = 0.003). The only significant association with cognitive tests was with the immediate recall of the California verbal and learning memory test. No significant association was present with the APOE genotype. These results support the hypothesis that white matter hyperintensities contribute to patterns of brain atrophy found in beyond-normal brain ageing in the general population. White matter hyperintensities also contribute to brain atrophy patterns in regions related to Alzheimer's disease dementia, in agreement with their known additive role to the likelihood of dementia. Preventive strategies reducing the odds to develop cardiovascular disease and white matter hyperintensities could decrease the incidence or delay the onset of dementia. © The Author (2016). Published by Oxford University Press on behalf of the Guarantors of Brain. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

White matter hyperintensities and imaging patterns of brain ageing in the general population

PubMed Central

Erus, Guray; Toledo, Jon B.; Zhang, Tianhao; Bryan, Nick; Launer, Lenore J.; Rosseel, Yves; Janowitz, Deborah; Doshi, Jimit; Van der Auwera, Sandra; von Sarnowski, Bettina; Hegenscheid, Katrin; Hosten, Norbert; Homuth, Georg; Völzke, Henry; Schminke, Ulf; Hoffmann, Wolfgang; Grabe, Hans J.; Davatzikos, Christos

2016-01-01

Abstract White matter hyperintensities are associated with increased risk of dementia and cognitive decline. The current study investigates the relationship between white matter hyperintensities burden and patterns of brain atrophy associated with brain ageing and Alzheimer’s disease in a large populatison-based sample ( n = 2367) encompassing a wide age range (20–90 years), from the Study of Health in Pomerania. We quantified white matter hyperintensities using automated segmentation and summarized atrophy patterns using machine learning methods resulting in two indices: the SPARE-BA index (capturing age-related brain atrophy), and the SPARE-AD index (previously developed to capture patterns of atrophy found in patients with Alzheimer’s disease). A characteristic pattern of age-related accumulation of white matter hyperintensities in both periventricular and deep white matter areas was found. Individuals with high white matter hyperintensities burden showed significantly ( P < 0.0001) lower SPARE-BA and higher SPARE-AD values compared to those with low white matter hyperintensities burden, indicating that the former had more patterns of atrophy in brain regions typically affected by ageing and Alzheimer’s disease dementia. To investigate a possibly causal role of white matter hyperintensities, structural equation modelling was used to quantify the effect of Framingham cardiovascular disease risk score and white matter hyperintensities burden on SPARE-BA, revealing a statistically significant ( P < 0.0001) causal relationship between them. Structural equation modelling showed that the age effect on SPARE-BA was mediated by white matter hyperintensities and cardiovascular risk score each explaining 10.4% and 21.6% of the variance, respectively. The direct age effect explained 70.2% of the SPARE-BA variance. Only white matter hyperintensities significantly mediated the age effect on SPARE-AD explaining 32.8% of the variance. The direct age effect explained 66.0% of the SPARE-AD variance. Multivariable regression showed significant relationship between white matter hyperintensities volume and hypertension ( P = 0.001), diabetes mellitus ( P = 0.023), smoking ( P = 0.002) and education level ( P = 0.003). The only significant association with cognitive tests was with the immediate recall of the California verbal and learning memory test. No significant association was present with the APOE genotype. These results support the hypothesis that white matter hyperintensities contribute to patterns of brain atrophy found in beyond-normal brain ageing in the general population. White matter hyperintensities also contribute to brain atrophy patterns in regions related to Alzheimer’s disease dementia, in agreement with their known additive role to the likelihood of dementia. Preventive strategies reducing the odds to develop cardiovascular disease and white matter hyperintensities could decrease the incidence or delay the onset of dementia. PMID:26912649

The Unexamined Whiteness of Teaching: How White Teachers Maintain and Enact Dominant Racial Ideologies

ERIC Educational Resources Information Center

Picower, Bree

2009-01-01

While much research that explores the role of race in education focuses on children of color, this article explores an aspect of the predominately White teaching force that educates them. This article explores findings from a qualitative study that posed questions about the ways in which White pre-service teachers' life-experiences influenced…

"Compromises That We Make": Whiteness in the Dual Language Context

ERIC Educational Resources Information Center

Burns, Meg

2017-01-01

This case study of a two-way dual language school explores the role of whiteness in a bilingual space, specifically with regards to parent involvement. I ask how whiteness operates in this setting and how the school's response to parent involvement reflects and/or challenges white supremacy. Using the concept of "interest convergence"…

Survival and growth of northern white-cedar and balsam fir seedlings in riparian management zones in northern Minnesota, USA

Treesearch

Brian J. Palik; Brooke K. Haworth; Andrew J. David; Randall K. Kolka

2015-01-01

Northern white-cedar (Thuja occidentalis) and balsam fir (Abies balsamea.) are co-occurring species in riparian forests of the western Great Lakes region. Throughout much of the region, northern white-cedar has been experiencing population declines due to herbivory by white-tailed deer (Odocoileus virginianus)....

Inequalities in the Educational Experiences of Black and White Americans, Background Paper.

ERIC Educational Resources Information Center

Chadima, Steven; Wabnick, Richard

There are inequalities in the educational experiences of blacks and whites. Black students tend to have lower grade point averages than do white students. Also, they are suspended more often and for longer spells than whites. Fewer blacks remain in secondary school beyond the compulsory attendance age, fewer graduate from high school, and fewer…

A Social Structural Reinterpretation of "The Burden of Acting White": A Hermeneutical Analysis

ERIC Educational Resources Information Center

Mocombe, Paul C.

2011-01-01

This essay explores how social psychologically the social structure of capitalist inequality has given rise to the Black-White achievement gap. This critical understanding is a reinterpretation of the "burden of acting White" hypothesis, and suggests that research on the achievement gap should focus on how the Black-White achievement gap is more a…

Differences in Mentor Relationships of Non-White and White Female Professionals and Organizational Mobility: A Review of the Literature.

ERIC Educational Resources Information Center

Scott, Nancy E.

1989-01-01

Reviews research on mentorship of minority female professional. Explores and summarizes: types of mentorships; differences in mentorships for minority and White women; who mentors for professional women are; and effects of organizational mobility. Found most mentors were males; minority females were more likely to mentor than Whites; and…

White Kids: Language, Race, and Styles of Youth Identity

ERIC Educational Resources Information Center

Bucholtz, Mary

2011-01-01

In White Kids, Mary Bucholtz investigates how white teenagers use language to display identities based on race and youth culture. Focusing on three youth styles--preppies, hip hop fans, and nerds--Bucholtz shows how white youth use a wealth of linguistic resources, from social labels to slang, from Valley Girl speech to African American English,…

Mexican-Origin Women's Employment Instability. Working Paper No. 51.

ERIC Educational Resources Information Center

De Anda, Roberto M.

This paper compares the causes and consequences of employment instability among Mexican-origin women, White women, and White men. Data came from the work experience supplement in the March 1995 file of the Current Population Survey for a sample that included 1,399 Mexican-origin women, 17,092 White women, and 24,440 White men. All were experienced…

Interdistrict Transfers, Latino/White School Segregation, and Institutional Racism in a Small California Town

ERIC Educational Resources Information Center

Prins, Esther

2007-01-01

This article examines how the interdistrict transfer of White students from a majority-Latino school to a majority-White school increased school segregation in a small California town. The article argues that White parents' decisions to transfer their children, coupled with the sending school district's decision to allow the transfers, constituted…

Evaluation of drying methods and toxicity of rayless goldenrod (Isocoma pluriflora) and white snakeroot (Ageratina altissima) in goats

USDA-ARS?s Scientific Manuscript database

White snakeroot and rayless goldenrod cause “trembles” and “milk sickness” in livestock and humans, respectively. The toxin in white snakeroot and rayless goldenrod was identified in 1927 and 1930, respectively as tremetol. It was reported that the toxin in white snakeroot disappears as it is drie...

Breakin' down Whiteness in Antiracist Teaching: Introducing Critical Whiteness Pedagogy

ERIC Educational Resources Information Center

Matias, Cheryl E.; Mackey, Janiece

2016-01-01

Because of the changing nature of race the role of antiracist teaching is a forever-evolving process. Acknowledging that the majority of the U.S. teaching force, from K-12 to teacher education in institutions of higher education, are white middle-class females, it becomes imperative to unveil pedagogical applications of critical whiteness studies.…

The Factor Structure of the Vocational Preference Inventory for Black and White College Students

ERIC Educational Resources Information Center

Yom, B. Lee; And Others

1975-01-01

In the present study, the Vocational Preference Inventory scores for a group of black students and white students were factor analyzed and the black structure was rotated to correspond to the white structure. The correspondence between the variables for black and white students was found to be very similar. (Author)

Northwestern University's Recent Alumni: In Black and White.

ERIC Educational Resources Information Center

Pitts, James P.; Ogletree, Kathryn

The results of a survey of 149 black and 258 white Northwestern University alumni who graduated between 1970 and 1973 are presented in this report. The survey focused on the academic and social experiences of black and white students during an era in which blacks were first admitted in significant numbers to a previously all-white elite…

Students and Institutions Protecting Whiteness as Property: A Critical Race Theory Analysis of Student Affairs Preparation

ERIC Educational Resources Information Center

Bondi, Stephanie

2012-01-01

This study is based on interviews with White students graduating from a student affairs preparation program as well as a literature review of whiteness in education. Applying "critical race theory," the author examined the ways that students and institutions protected whiteness. Institutions and those within them concerned with equity must have…

Exposing Whiteness in Higher Education: White Male College Students Minimizing Racism, Claiming Victimization, and Recreating White Supremacy

ERIC Educational Resources Information Center

Cabrera, Nolan León

2014-01-01

This research critically examines racial views and experiences of 12 white men in a single higher education institution via semi-structured interviews. Participants tended to utilize individualized definitions of racism and experience high levels of racial segregation in both their pre-college and college environments. This corresponded to…

The Process by Which Black Male College Students Become Leaders of Predominantly White Organizations in Higher Education: A Grounded Theory

ERIC Educational Resources Information Center

Moschella, Eric J.

2013-01-01

This study sought to understand the process by which Black undergraduate men on predominately White college campuses become leaders of predominately White organizations. Using the theoretical frameworks of Black and White racial identity development (Helms, 1990), Critical Race Theory (Delgado & Stefancic, 2001), and Wijeyesinghe's (2001)…

11 CFR 9004.6 - Expenditures for transportation and services made available to media personnel; reimbursements.

Code of Federal Regulations, 2014 CFR

2014-01-01

... the media only for the billable items specified in the White House Press Corps Travel Policies and Procedures issued by the White House Travel Office. (b) Reimbursement limits; billing. (1) The amount of... specified in the White House Press Corps Travel Policies and Procedures issued by the White House Travel...

Tough or Tender: (Dis)Similarities in White College Students' Perceptions of Black and White Women

ERIC Educational Resources Information Center

Donovan, Roxanne A.

2011-01-01

Although intersectional theory and empirical evidence suggest that race impacts how women are perceived, there is a dearth of research on how the dominant culture stereotypes Black women compared to White women. The current study addresses this gap using an intersectional framework to investigate White college students' stereotypes of Black and…

Affect, Race, and White Discomfort in Schooling: Decolonial Strategies for 'Pedagogies of Discomfort'

ERIC Educational Resources Information Center

Zembylas, Michalinos

2018-01-01

The present paper theorises white discomfort as not an individual psychologised emotion, but rather as a social and political affect that is part of the production and maintenance of white colonial structures and practices. Therefore, it is suggested that white discomfort cannot be critically addressed merely in pedagogic terms and conditions…

White House Science Fair

NASA Image and Video Library

2014-05-27

President Barack Obama spoke at the White House Science Fair Tuesday, May 27, 2014 at the White House. NASA Administrator Charles Bolden attended and was recognized by the President at the fourth White House Science Fair, which included 100 students from more than 30 different states who competed in science, technology, engineering, and math (STEM) competitions. (Photo Credit: NASA/Aubrey Gemignani)

Evaluating White Space of a Malaysian Secondary ELT Textbook

ERIC Educational Resources Information Center

Jin, Ng Yu

2010-01-01

Students are believed to learn at optimum level with materials with a lot of white space since the existence of vast number of words and limited amount of white space, especially in textbooks may contribute to the increase in anxiety among learners (Tomlinson, 1998). This study evaluates the amount of white space in terms of pixels in the…

Social Class, School and Non-School Environments, and Black/White Inequalities in Children's Learning

ERIC Educational Resources Information Center

Condron, Dennis J.

2009-01-01

As social and economic stratification between black and white Americans persists at the dawn of the twenty-first century, disparities in educational outcomes remain an especially formidable barrier. Recent research on the black/white achievement gap points to a perplexing pattern in this regard. Schools appear to exacerbate black/white disparities…

Morale, Participation and Shortage in White-Majority and White-Minority Schools: Principals' Perceptions

ERIC Educational Resources Information Center

Cheema, Jehanzeb R.; Fuller Hamilton, Asia N.

2017-01-01

Prior research has shown that teacher-centred factors such as teacher participation in decision making, teacher morale, and shortage of teaching staff, can affect school performance. In this study we examined how these factors differ between White-majority and White-minority schools both before and after controlling for school characteristics such…

Media Access and the Radical Right: Public Access to "Race and Reason."

ERIC Educational Resources Information Center

Rendahl, Stephen

Tom Metzger and his white supremacist movement, the White Aryan Resistance, attempt to build support with working class whites and youth to create white working class solidarity and racial separation. Metzger uses videotapes as one of the methods of bringing his racist and conspiratorial message to his audience. One such vehicle is "Race and…

Examining possible causes of mortality in white pine seedlings

Treesearch

Elizabeth Gilles; Ronald Reitz; Greg Hoss; David. Gwaze

2011-01-01

White pine (Pinus strobus L.) is one of the most important timber trees in the northeastern United States and eastern Canada (Demeritt and Garrett 1996). White pine is not native to Missouri; it is commonly planted for wind breaks and erosion control and as an ornamental. Unusual mortality of bare-root seedlings of white pine purchased from the...

White Skin, Black Friend: A Fanonian Application to Theorize Racial Fetish in Teacher Education

ERIC Educational Resources Information Center

Matias, Cheryl E.

2016-01-01

In "Black Skin, white masks" (1967, Grove Press), Franz Fanon uses a psychoanalytic framework to theorize the inferiority-dependency complex of Black men in response to the colonial racism of white men. Applying his framework in reverse, this theoretical article psychoanalyzes the white psyche and emotionality with respect to the…

Can microscale meteorological conditions predict the impact of white pine blister rust in Colorado and Wyoming?

Treesearch

William R. Jacobi; Betsy A. Goodrich; Holly S. J. Kearns; Kelly S. Burns; Brian W. Geils

2011-01-01

White pine blister rust occurs when there are compatible interactions between susceptible hosts (white pines and Ribes spp.), inoculum (Cronartium ribicola spores), and local weather conditions during infection. The five spore stages of the white pine blister rust (WPBR) fungus have specific temperature and moisture conditions necessary for production, germination, and...

76 FR 62089 - Correction of Notice of Meeting, Committee for the Preservation of the White House

Federal Register 2010, 2011, 2012, 2013, 2014

2011-10-06

... Notice of Meeting, Committee for the Preservation of the White House AGENCY: National Park Service... of the White House which will occur October 18, 2011. The purpose, date, time and place of the... of the White House, (202) 619-6344. SUPPLEMENTARY INFORMATION: Need for Correction On September 21...

Insect-induced crystallization of white pine resins. II. white-pine cone beetle

Treesearch

Frank S., Jr. Santamour

1965-01-01

The white-pine cone beetle (Conophthoras coniperda ( Schwarz ) ) can cause extensive damage to cones of eastern white pine (Pinus strobus L.) and can severely hamper natural reproduction of this species (Graber 1964). This insect also will be a potential pest of seed orchards for the production of genetically superior seed if and...

Tipping Point: The Diversity Threshold for White Student (Dis) Engagement in Traditional Student Organizations

ERIC Educational Resources Information Center

Elston, Dhanfu El-Hajj

2011-01-01

During a time when most institutions of higher education are in search of underrepresented student participation, Georgia State University (GSU), a majority White institution, has observed a lack of involvement of White students in co-curricular activities. The purpose of the research study was to critically examine White students' (dis)…

Natural regeneration in the western white pine type

Treesearch

Irvine T. Haig; Kenneth P. Davis; Robert H. Weidman

1941-01-01

The purpose of this bulletin is to bring together the available information on natural regeneration of the western white pine type, based on about 25 years of forest research and 30 years of national-forest timber-cutting experience. Western white pine (Pinus monticola) forms the key species of the valuable western white pine type of northern Idaho and contiguous...

Assessing the Learning of White Students on Themes of White Privilege & Racism

ERIC Educational Resources Information Center

Heinze, Peter; DeCandia, Gabriela

2011-01-01

In an earlier article appearing in "Multicultural Education" (Volume 16, Number 1, Fall 2008) a number of pedagogical techniques were presented for teaching White students about White privilege and racism (Heinze, 2008). That article emphasized that racism exists along a continuum and that the instructor needs to examine and disclose his or her…

A Drosophila melanogaster hobo-white + vector mediates low frequency gene transfer in D. vlrllls with full Interspecific white + complementation

USDA-ARS?s Scientific Manuscript database

Transformation of a Drosophila virilis white mutant host strain was attempted by using a hobo vector containing the D. melanogaster mini-white+ cassette (H[w+, hawN]) and an unmodified or heat shock regulated hobo transposase helper. Two transformant lines were recovered with the unmodified helper (...

36 CFR 1260.58 - What are the procedures for requesting a mandatory review of White House originated information?

Code of Federal Regulations, 2011 CFR

2011-07-01

... requesting a mandatory review of White House originated information? 1260.58 Section 1260.58 Parks, Forests... review of White House originated information? (a) Requests for mandatory review must describe the...) NARA will promptly acknowledge to the requester the receipt of a request for White House originated...

Tie-Dyed Realities in a Monochromatic World: Deconstructing the Effects of Racial Microaggressions on Black-White Multiracial University Students

ERIC Educational Resources Information Center

Touchstone, Claire Anne

2013-01-01

Traditional policies dictate that Black-White multiracial people conform to monoracial minority status arising from Hypodescent (the "One-Drop Rule") and White privilege. Despite some social recognition of Black-White persons as multiracial, racial microaggressions persist in daily life. Subtle racist acts (Sue, Capodilupo, Torino,…

White Complicity and Social Justice Education: Can One Be Culpable without Being Liable?

ERIC Educational Resources Information Center

Applebaum, Barbara

2007-01-01

In part of an ongoing study of white complicity, moral responsibility, and moral agency in social justice education, Barbara Applebaum asks in this essay what model or models of moral responsibility can help white students recognize their white complicity and which models of moral responsibility obscure such acknowledgment. To address this…

78 FR 31568 - Ryan White HIV/AIDS Program, Part C Early Intervention Services Grant Under the Ryan White HIV...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-05-24

... HIV/AIDS Program, Part C Early Intervention Services Grant Under the Ryan White HIV/AIDS Program.... ACTION: Notice of Ryan White HIV/AIDS Program Part C Early Intervention Services One-Time Noncompetitive Award to Ensure Continued HIV Primary Medical Care. SUMMARY: To prevent a lapse in comprehensive primary...

76 FR 30951 - Part C Early Intervention Services Grant Under the Ryan White HIV/AIDS Program

Federal Register 2010, 2011, 2012, 2013, 2014

2011-05-27

... Intervention Services Grant Under the Ryan White HIV/AIDS Program AGENCY: Health Resources and Services... White HIV/AIDS Program, Part C Funds for the Tutwiler Clinic. SUMMARY: HRSA will award non-competitively Ryan White HIV/AIDS Program, Part C funds to the Tutwiler Clinic, Tutwiler, Mississippi, to support...

78 FR 10183 - Ryan White HIV/AIDS Program, Part C Early Intervention Services Grant Under the Ryan White HIV...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-02-13

... HIV/AIDS Program, Part C Early Intervention Services Grant Under the Ryan White HIV/AIDS Program.... ACTION: Notice of Ryan White HIV/AIDS Program Part C Early Intervention Services One-Time Noncompetitive Award to Ensure Continued HIV Primary Medical Care. SUMMARY: To prevent a lapse in comprehensive primary...

78 FR 10182 - Ryan White HIV/AIDS Program, Part C Early Intervention Services Grant Under the Ryan White HIV...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-02-13

... HIV/AIDS Program, Part C Early Intervention Services Grant Under the Ryan White HIV/AIDS Program.... ACTION: Notice of Ryan White HIV/AIDS Program (Part C) Early Intervention Services One-Time Noncompetitive Award to Ensure Continued HIV Primary Medical Care. SUMMARY: To prevent a lapse in comprehensive...

White pines, blister rust, and management in the Southwest

Treesearch

D. A. Conklin; M Fairweather; D Ryerson; B Geils; D Vogler

2009-01-01

White pines in New Mexico and Arizona are threatened by the invasive disease white pine blister rust, Cronartium ribicola. Blister rust is already causing severe damage to a large population of southwestern white pine in the Sacramento Mountains of southern New Mexico. Recent detection in northern and western New Mexico suggests that a major expansion of the...

White pine blister rust in the interior Mountain West

Treesearch

Kelly Burns; Jim Blodgett; Dave Conklin; Brian Geils; Jim Hoffman; Marcus Jackson; William Jacobi; Holly Kearns; Anna Schoettle

2010-01-01

White pine blister rust is an exotic, invasive disease of white, stone, and foxtail pines (also referred to as white pines or five-needle pines) in the genus Pinus and subgenus Strobus (Price and others 1998). Cronartium ribicola, the fungus that causes WPBR, requires an alternate host - currants and gooseberries in the genus Ribes and species of Pedicularis...

Asteroseismology of White Dwarf Stars

NASA Technical Reports Server (NTRS)

Hansen, Carl J.

1997-01-01

The primary purpose of this investigation has been to study various aspects of multimode pulsations in variable white dwarfs. In particular, nonlinear interactions among pulsation modes in white dwarfs (and, to some extent, in other variable stars), analysis of recent observations where such interactions are important, and preliminary work on the effects of crystallization in cool white dwarfs are reported.

The Effect of School Quality on Black-White Health Differences: Evidence From Segregated Southern Schools

PubMed Central

Frisvold, David; Golberstein, Ezra

2013-01-01

This study assesses the effect of black-white differences in school quality on black-white differences in health in later life resulting from the racial convergence in school quality for cohorts born between 1910 and 1950 in southern states with segregated schools. Using data from the 1984 through 2007 National Health Interview Surveys linked to race-specific data on school quality, we find that reductions in the black-white gap in school quality led to modest reductions in the black-white gap in disability. PMID:23839102

PIXE analysis of Chinese ancient greenish white porcelain

NASA Astrophysics Data System (ADS)

Cheng, Lin; Ding, Xun-liang; Feng, Song-lin; Cheng, Huang-sheng; Zhang, Wen-Jiang; Fan, Chang-Sheng

2006-03-01

This paper reports the results about the PIXE analysis of major, minor and trace elements of Chinese ancient greenish white porcelain and blue-and-white porcelain produced in Hutian Kiln (Jingdezhen district, Jiangxi province) during 10th-14th centuries. The porcelain body and greenish white glaze from northern Song (AD 960), southern Song (AD 1037-1276), early Yuan (AD 1279-1320), later Yuan (AD 1320-1368) were investigated together with white-and-blue glaze from Ming dynasty (AD 1368-1644). The obtained data were further analyzed by factor analysis.

Medical Entomology Studies - XII. A Revision of the Aedes Scutellaris Group of Tonga (Diptera: Culicidae) (Contributions of the American Entomological Institute. Volume 17, Number 3, 1980)

DTIC Science & Technology

1980-01-01

Aedes Meigen serve as the primary vectors of subperiodic Wuchereria bancrofti ( Cobbold ) on many islands of the South Pacific. A thorough study to...hindfemur with basal 0.12 or less white (Fig. 16). upolensis Marks Lateral prescutal white line present, or at least with some narrow white scales on...or at most 0.07 white (Fig. 16). , . . . . . . . . . . . . . . polynesiensis Marks Dorsal surface of hindfemur with basal area 0.10 or more white

Prospective EUV observations of hot DA white dwarfs with the EUV Explorer

NASA Technical Reports Server (NTRS)

Finley, David S.; Malina, Roger F.; Bowyer, Stuart

1987-01-01

The Extreme Ultraviolet Explorer (EUVE) will perform a high sensitivity EUV all-sky survey. A major category of sources which will be detected with the EUVE instruments consists of hot white dwarfs. Detailed preliminary studies of synthetic EUV observations of white dwarfs have been carried out using the predicted EUVE instrumental response functions. Using available information regarding space densities of white dwarfs and the distribution of neutral hydrogen in the interstellar medium, the numbers of DA white dwarfs which will be detectable in the different EUV bandpasses have been estimated.

The Jung-White dialogue and why it couldn't work and won't go away.

PubMed

Dourley, John P

2007-06-01

White's Thomism and its Aristotelian foundation were at the heart of his differences with Jung over the fifteen years of their dialogue. The paper examines the precedents and consequences of the imposition of Thomism on the Catholic Church in 1879 in order to clarify the presuppositions White carried into his dialogue with Jung. It then selects two of Jung's major letters to White to show how their dialogue influenced Jung's later substantial work, especially his Answer to Job. The dialogue with White contributed to foundational elements in the older Jung's development of his myth which simply outstripped White's theological imagination and continues to challenge the worlds of contemporary monotheistic orthodoxy in all their variants.

An experimental study on target recognition using white canes.

PubMed

Nunokawa, Kiyohiko; Ino, Shuichi

2010-01-01

To understand basic tactile perception using white canes, we compared tapping (two times) and pushing (two times) methods using the index finger and using a white cane, with and without accompanying auditory information. Participants were six visually impaired individuals who used a white cane to walk independently in their daily lives. For each of the tapping and pushing and sound or no sound conditions, participants gave magnitude estimates for the hardness of rubber panels. Results indicated that using a white cane produces sensitivity levels equal to using a finger when accompanied by auditory information, and suggested that when using a white cane to estimate the hardness of a target, it is most effective to have two different modalities of tactile and auditory information derived from tapping.

The costume of Shangri-La: thoughts on white privilege, cultural appropriation, and anti-asian racism.

PubMed

Kleisath, C Michelle

2014-01-01

This piece poses cultural appropriation as an undertheorized aspect of white privilege in White Privilege Studies. By way of narrative exploration, it asserts that a paucity of scholarship on Orientalism and anti-Asian racism has created a gap in White Privilege Studies that curbs its radical transformative potential. It argues for the value of a structural and historically focused lens for understanding the issue of cultural appropriation, and extends questions of culture and race relations beyond the borders of the United States. It also explores the complex ways that interracial and transnational relationships can influence white racial identity, and illustrates the disruptive potential that queer interracial relationships can offer to dominant historical patterns of white behavior.

Efficient white light generation from 2,3-diphenyl-1,2-dihydro-quinoxaline complex

NASA Astrophysics Data System (ADS)

Dwivedi, Y.; Kant, S.; Rai, R. N.; Rai, S. B.

2010-11-01

In this article, we report two organic materials dispersed in transparent poly (methyl methacrylate) matrix for efficient white light simulation under different optical excitations. A newly synthesized complex of benzoin and o-phenyldiamine is observed to be white on illumination with a blue LED. A new concept of white light emitting tube is also demonstrated. A mixture of 2,2″-([1,1'-biphenyl]-4,4'-diyldi-2,1-ethenediyl)-bis-benzenesulfonic acid disodium salt and complex is optimized to emit white light extended in the violet region on 355 nm laser excitation. The optical quality of the emitted white light is adjudged by the CIE coordinate, correlated color temperature and color rendition index in both the cases.

Insight on AV-45 binding in white and grey matter from histogram analysis: a study on early Alzheimer's disease patients and healthy subjects

PubMed Central

Nemmi, Federico; Saint-Aubert, Laure; Adel, Djilali; Salabert, Anne-Sophie; Pariente, Jérémie; Barbeau, Emmanuel; Payoux, Pierre; Péran, Patrice

2014-01-01

Purpose AV-45 amyloid biomarker is known to show uptake in white matter in patients with Alzheimer’s disease (AD) but also in healthy population. This binding; thought to be of a non-specific lipophilic nature has not yet been investigated. The aim of this study was to determine the differential pattern of AV-45 binding in healthy and pathological populations in white matter. Methods We recruited 24 patients presenting with AD at early stage and 17 matched, healthy subjects. We used an optimized PET-MRI registration method and an approach based on intensity histogram using several indexes. We compared the results of the intensity histogram analyses with a more canonical approach based on target-to-cerebellum Standard Uptake Value (SUVr) in white and grey matters using MANOVA and discriminant analyses. A cluster analysis on white and grey matter histograms was also performed. Results White matter histogram analysis revealed significant differences between AD and healthy subjects, which were not revealed by SUVr analysis. However, white matter histograms was not decisive to discriminate groups, and indexes based on grey matter only showed better discriminative power than SUVr. The cluster analysis divided our sample in two clusters, showing different uptakes in grey but also in white matter. Conclusion These results demonstrate that AV-45 binding in white matter conveys subtle information not detectable using SUVr approach. Although it is not better than standard SUVr to discriminate AD patients from healthy subjects, this information could reveal white matter modifications. PMID:24573658

Racial Disparities in the Prevalence of Arthritis among Native Hawaiians and Pacific Islanders, Whites, and Asians.

PubMed

Obana, Kyle K; Davis, James

2016-06-01

The health disparities of Native Hawaiians and Pacific Islanders (NHPI) are well established for diabetes and cardiovascular disease, but less is known about disparities in arthritis. This study examined possible disparities in the prevalence of arthritis by age, sex, and severity comparing NHPI, Whites, and Asians. The study population included adult Hawai'i participants in the 2013 Behavioral Risk Factor Surveillance Survey. NHPI males had a significantly higher prevalence of arthritis, which peaked twenty years earlier, than White and Asian males (P<.001). The prevalence of arthritis peaked at 65-79 years in males and females in all racial groups, except in NHPI males where it peaked at 45-54 years. The mean ages (years) for males with arthritis were 46.2 for NHPI, 59.1 for Whites, and 60.5 for Asians; the respective ages for females were 54.2, 60.5, and 58.8. NHPI males body mass index averaged 2.4 kg/m(2) greater than White males (P<.001), and obese NHPI males had twice the age-adjusted odds of arthritis than obese White males. Although NHPI females had a greater body mass index than White females (P=.05), the prevalence of arthritis was only slightly and not significantly higher. NHPI males and females reported high pain scores more frequently than Whites did, but the differences did not reach statistical significance. Diabetes was a comorbidity more than twice as often in NHPI and Asians of both sexes than among Whites. This study demonstrated racial disparities in the prevalence of arthritis among NHPI, Whites, and Asians.

Sleep Duration and White Matter Quality in Middle-Aged Adults

PubMed Central

Yaffe, Kristine; Nasrallah, Ilya; Hoang, Tina D.; Lauderdale, Diane S.; Knutson, Kristen L.; Carnethon, Mercedes R.; Launer, Lenore J.; Lewis, Cora E.; Sidney, Stephen

2016-01-01

Study Objectives: Sleep duration has been associated with risk of dementia and stroke, but few studies have investigated the relationship between sleep duration and brain MRI measures, particularly in middle age. Methods: In a prospective cohort of 613 black and white adults (mean age = 45.4 years) enrolled in the Coronary Artery Risk Development in Young Adults (CARDIA) study, participants reported typical sleep duration, dichotomized into moderate sleep duration (> 6 to ≤ 8 h) and short sleep duration (≤ 6 h) at baseline (2005–2006). Five years later, we obtained brain MRI markers of white matter including fractional anisotropy, mean diffusivity, and white matter hyperintensities. Results: Compared to moderate sleepers, short sleepers had an elevated ratio of white matter hyperintensities to normal tissue in the parietal region (OR = 2.31, 95% CI: 1.47, 3.61) adjusted for age, race/sex, education, hypertension, stroke/TIA, depression, smoking status, and physical activity. White matter diffusivity was also higher, approximately a 0.2 standard deviation difference, in frontal, parietal, and temporal white matter regions, among those reporting shorter sleep duration in (P < 0.05 for all). Conclusions: Short sleep duration was associated with worse markers of white matter integrity in midlife. These mid-life differences in white matter may underlie the link between poor sleep and risk of dementia and stroke. Citation: Yaffe K, Nasrallah I, Hoang TD, Lauderdale DS, Knutson KL, Carnethon MR, Launer LJ, Lewis CE, Sidney S. Sleep duration and white matter quality in middle-aged adults. SLEEP 2016;39(9):1743–1747. PMID:27397561

What caused the population decline of the Bridled White-eye on Rota, Mariana Islands?

USGS Publications Warehouse

Fancy, Steven G.; Snetsinger, Thomas J.

2001-01-01

The Bridled White-eye (Zosterops conspicillatus rotensis) was Once thought to be common and widespread on Rota, Commonwealth of the Northern Mariana Islands, but is now restricted to several patches of native limestone forest in and adjacent to the Sabana region. Surveys conducted in 1990 indicated that the population had declined by 87% between 1982 and 1990 for unknown reasons. The low density and restricted habitat association of the Bridled White-eye on Rota contrasts with the situation on Saipan, Tinian, Agiguan, and formerly on Guam, where the Bridled White-eye is the most common forest bird and occurs at all elevations and in all habitat types. We surveyed the entire range of the Rota Bridled White-eye in 1996 to estimate its current numbers and distribution. We also reviewed existing information on the white-eye and evaluated potential causes of its decline, including predation by Black Drongos (Dicrurus macrocercus), rats (Rattus spp.), and the brown tree snake Boiga irregularis); pesticides; avian disease; and habitat loss and alteration. We found that 94% of the extant population of 1,165 white-eyes on Rota was restricted to four patches of old-growth, native limestone forest covering only 259 ha. We believe that the population decline and current localized distribution is primarily a result of habitat changes due to agricultural development and typhoons, but the absence of white-eyes from several stands of native forest above 200 m remains unexplained. The Rota white-eye may be a different species from white-eyes found on Saipan, Tinian, Agiguan, and Guam, with different habitat preferences.

Endogenous Retrovirus Insertion in the KIT Oncogene Determines White and White spotting in Domestic Cats

PubMed Central

David, Victor A.; Menotti-Raymond, Marilyn; Wallace, Andrea Coots; Roelke, Melody; Kehler, James; Leighty, Robert; Eizirik, Eduardo; Hannah, Steven S.; Nelson, George; Schäffer, Alejandro A.; Connelly, Catherine J.; O’Brien, Stephen J.; Ryugo, David K.

2014-01-01

The Dominant White locus (W) in the domestic cat demonstrates pleiotropic effects exhibiting complete penetrance for absence of coat pigmentation and incomplete penetrance for deafness and iris hypopigmentation. We performed linkage analysis using a pedigree segregating White to identify KIT (Chr. B1) as the feline W locus. Segregation and sequence analysis of the KIT gene in two pedigrees (P1 and P2) revealed the remarkable retrotransposition and evolution of a feline endogenous retrovirus (FERV1) as responsible for two distinct phenotypes of the W locus, Dominant White, and white spotting. A full-length (7125 bp) FERV1 element is associated with white spotting, whereas a FERV1 long terminal repeat (LTR) is associated with all Dominant White individuals. For purposes of statistical analysis, the alternatives of wild-type sequence, FERV1 element, and LTR-only define a triallelic marker. Taking into account pedigree relationships, deafness is genetically linked and associated with this marker; estimated P values for association are in the range of 0.007 to 0.10. The retrotransposition interrupts a DNAase I hypersensitive site in KIT intron 1 that is highly conserved across mammals and was previously demonstrated to regulate temporal and tissue-specific expression of KIT in murine hematopoietic and melanocytic cells. A large-population genetic survey of cats (n = 270), representing 30 cat breeds, supports our findings and demonstrates statistical significance of the FERV1 LTR and full-length element with Dominant White/blue iris (P < 0.0001) and white spotting (P < 0.0001), respectively. PMID:25085922

Endogenous retrovirus insertion in the KIT oncogene determines white and white spotting in domestic cats.

PubMed

David, Victor A; Menotti-Raymond, Marilyn; Wallace, Andrea Coots; Roelke, Melody; Kehler, James; Leighty, Robert; Eizirik, Eduardo; Hannah, Steven S; Nelson, George; Schäffer, Alejandro A; Connelly, Catherine J; O'Brien, Stephen J; Ryugo, David K

2014-08-01

The Dominant White locus (W) in the domestic cat demonstrates pleiotropic effects exhibiting complete penetrance for absence of coat pigmentation and incomplete penetrance for deafness and iris hypopigmentation. We performed linkage analysis using a pedigree segregating White to identify KIT (Chr. B1) as the feline W locus. Segregation and sequence analysis of the KIT gene in two pedigrees (P1 and P2) revealed the remarkable retrotransposition and evolution of a feline endogenous retrovirus (FERV1) as responsible for two distinct phenotypes of the W locus, Dominant White, and white spotting. A full-length (7125 bp) FERV1 element is associated with white spotting, whereas a FERV1 long terminal repeat (LTR) is associated with all Dominant White individuals. For purposes of statistical analysis, the alternatives of wild-type sequence, FERV1 element, and LTR-only define a triallelic marker. Taking into account pedigree relationships, deafness is genetically linked and associated with this marker; estimated P values for association are in the range of 0.007 to 0.10. The retrotransposition interrupts a DNAase I hypersensitive site in KIT intron 1 that is highly conserved across mammals and was previously demonstrated to regulate temporal and tissue-specific expression of KIT in murine hematopoietic and melanocytic cells. A large-population genetic survey of cats (n = 270), representing 30 cat breeds, supports our findings and demonstrates statistical significance of the FERV1 LTR and full-length element with Dominant White/blue iris (P < 0.0001) and white spotting (P < 0.0001), respectively. Copyright © 2014 David et al.

Global Gene-expression Analysis of the Response of Salmonella Enteritidis to Egg White Exposure Reveals Multiple Egg White-imposed Stress Responses

PubMed Central

Baron, Florence; Bonnassie, Sylvie; Alabdeh, Mariah; Cochet, Marie-Françoise; Nau, Françoise; Guérin-Dubiard, Catherine; Gautier, Michel; Andrews, Simon C.; Jan, Sophie

2017-01-01

Chicken egg white protects the embryo from bacterial invaders by presenting an assortment of antagonistic activities that combine together to both kill and inhibit growth. The key features of the egg white anti-bacterial system are iron restriction, high pH, antibacterial peptides and proteins, and viscosity. Salmonella enterica serovar Enteritidis is the major pathogen responsible for egg-borne infection in humans, which is partly explained by its exceptional capacity for survival under the harsh conditions encountered within egg white. However, at temperatures up to 42°C, egg white exerts a much stronger bactericidal effect on S. Enteritidis than at lower temperatures, although the mechanism of egg white-induced killing is only partly understood. Here, for the first time, the impact of exposure of S. Enteritidis to egg white under bactericidal conditions (45°C) is explored by global-expression analysis. A large-scale (18.7% of genome) shift in transcription is revealed suggesting major changes in specific aspects of S. Enteritidis physiology: induction of egg white related stress-responses (envelope damage, exposure to heat and alkalinity, and translation shutdown); shift in energy metabolism from respiration to fermentation; and enhanced micronutrient provision (due to iron and biotin restriction). Little evidence of DNA damage or redox stress was obtained. Instead, data are consistent with envelope damage resulting in cell death by lysis. A surprise was the high degree of induction of hexonate/hexuronate utilization genes, despite no evidence indicating the presence of these substrates in egg white. PMID:28553268

Probing LSST's Ability to Detect Planets Around White Dwarfs

NASA Astrophysics Data System (ADS)

Cortes, Jorge; Kipping, David

2018-01-01

Over the last four years more than 2,000 planets outside our solar system have been discovered, motivating us to search for and characterize potentially habitable worlds. Most planets orbit Sun-like stars, but more exotic stars can also host planets. Debris disks and disintegrating planetary bodies have been detected around white dwarf stars, the inert, Earth-sized cores of once-thriving stars like our Sun. These detections are clues that planets may exist around white dwarfs. Due to the faintness of white dwarfs and the potential rarity of planets around them, a vast survey is required to have a chance at detecting these planetary systems. The Large Synoptic Survey Telescope (LSST), scheduled to commence operations in 2023, will image the entire southern sky every few nights for 10 years, providing our first real opportunity to detect planets around white dwarfs. We characterized LSST’s ability to detect planets around white dwarfs through simulations that incorporate realistic models for LSST’s observing strategy and the white dwarf distribution within the Milky Way galaxy. This was done through the use of LSST's Operations Simulator (OpSim) and Catalog Simulator (CatSim). Our preliminary results indicate that, if all white dwarfs were to possess a planet, LSST would yield a detection for every 100 observed white dwarfs. In the future, a larger set of ongoing simulations will help us quantify the number of planets LSST could potentially find.

Polyculture Engineering technology of larasati red tilapia (Oreochromis niloticus) and white shrimp (Litopenaeus vannamei) based for protease enzyme

NASA Astrophysics Data System (ADS)

Samidjan, I.; Rachmawati, D.

2018-04-01

The objective is polyculture technology of red tilapia larasati fish and white shrimp with different combinations density. The material is saline red tilapia larasati 3.29 ± 0.018 g and white shrimp with initial weight 1.39 ± 0.025 g. Seeds are density of red tilapia larasati larvae 5 and 10 larvae / m2 fish. And white shrimp 5 larvae / m2 and 10 larvae / m2. An artificial feed used enzyme dose of 2.25 g / kg. The experimental using complete randomized design 4 treatments and 3 replications that is given seeds 5 larvae / m2 larvae red tilapia larasati and given 5 larvae / m2 white shrimp (A), 5 larvae / m2 red tilapia) and 10 m2 / m2 of white shrimp (B), 10 m2 larvae and 5 m2 white shrimp (C), 10 m2 larvae and 10 m2 white shrimp (D)). The data were growth of absolute weight, survival rate, FCR, and water quality data (temperature, salinity, pH, O2, NO2, NH3). Data were analyzed of variance (F test). The results showed significantly effect (P <0.01) on the growth. The highest absolute growth in D treatment were red tilapia larasati (185.75 ± 0.50g) and white shrimp (25.25 ± 0.95 g).

Bayesian time series analysis of segments of the Rocky Mountain trumpeter swan population

USGS Publications Warehouse

Wright, Christopher K.; Sojda, Richard S.; Goodman, Daniel

2002-01-01

A Bayesian time series analysis technique, the dynamic linear model, was used to analyze counts of Trumpeter Swans (Cygnus buccinator) summering in Idaho, Montana, and Wyoming from 1931 to 2000. For the Yellowstone National Park segment of white birds (sub-adults and adults combined) the estimated probability of a positive growth rate is 0.01. The estimated probability of achieving the Subcommittee on Rocky Mountain Trumpeter Swans 2002 population goal of 40 white birds for the Yellowstone segment is less than 0.01. Outside of Yellowstone National Park, Wyoming white birds are estimated to have a 0.79 probability of a positive growth rate with a 0.05 probability of achieving the 2002 objective of 120 white birds. In the Centennial Valley in southwest Montana, results indicate a probability of 0.87 that the white bird population is growing at a positive rate with considerable uncertainty. The estimated probability of achieving the 2002 Centennial Valley objective of 160 white birds is 0.14 but under an alternative model falls to 0.04. The estimated probability that the Targhee National Forest segment of white birds has a positive growth rate is 0.03. In Idaho outside of the Targhee National Forest, white birds are estimated to have a 0.97 probability of a positive growth rate with a 0.18 probability of attaining the 2002 goal of 150 white birds.

Shades of white: diffusion properties of T1- and FLAIR-defined white matter signal abnormalities differ in stages from cognitively normal to dementia.

PubMed

Riphagen, Joost M; Gronenschild, Ed H B M; Salat, David H; Freeze, Whitney M; Ivanov, Dimo; Clerx, Lies; Verhey, Frans R J; Aalten, Pauline; Jacobs, Heidi I L

2018-08-01

The underlying pathology of white matter signal abnormalities (WMSAs) is heterogeneous and may vary dependent on the magnetic resonance imaging contrast used to define them. We investigated differences in white matter diffusivity as an indicator for white matter integrity underlying WMSA based on T1-weighted and fluid-attenuated inversion recovery (FLAIR) imaging contrast. In addition, we investigated which white matter region of interest (ROI) could predict clinical diagnosis best using diffusion metrics. One hundred three older individuals with varying cognitive impairment levels were included and underwent neuroimaging. Diffusion metrics were extracted from WMSA areas based on T1 and FLAIR contrast and from their overlapping areas, the border surrounding the WMSA and the normal-appearing white matter (NAWM). Regional diffusivity differences were calculated with linear mixed effects models. Multinomial logistic regression determined which ROI diffusion values classified individuals best into clinically defined diagnostic groups. T1-based WMSA showed lower white matter integrity compared to FLAIR WMSA-defined regions. Diffusion values of NAWM predicted diagnostic group best compared to other ROI's. To conclude, T1- or FLAIR-defined WMSA provides distinct information on the underlying white matter integrity associated with cognitive decline. Importantly, not the "diseased" but the NAWM is a potentially sensitive indicator for cognitive brain health status. Copyright © 2018 The Authors. Published by Elsevier Inc. All rights reserved.

Increased Medicaid Financing and Equalization of African Americans' and Whites' Outpatient and Emergency Treatment Expenditures.

PubMed

Snowden, Lonnie R; Wallace, Neal; Cordell, Kate; Graaf, Genevieve

2016-09-01

We investigated whether a new funding opportunity to finance mental health treatment, provided to autonomous county-level mental health systems without customary cost sharing requirements, equalized African American and White children's outpatient and emergency treatment expenditure inequalities. Using Whites as a benchmark, we considered expenditure patterns favoring Whites over African Americans ("disparities") and favoring African Americans over Whites ("reverse disparities"). Settlement-mandated Early Periodic Screening Diagnosis and Treatment (EPSDT) expenditure increases began in the third quarter of 1995. We analyzed Medi-Cal paid claims for mental health services delivered to youth (under 18 years of age) over 64 quarters for a study period covering July 1, 1991 through June 30, 2007 in controlled cross-sectional (systems), longitudinal (quarters) analyses. Settlement-mandated increases in EPSDT treatment funding was associated with relatively greater African American vs. White expenditures for outpatient care when systems initially spent more on Whites. When systems initially spent more on African Americans, relative increases were greater for Whites for outpatient and emergency services. With new funding that requires no matching funds from the county, county mental health systems did reduce outpatient treatment expenditure inequalities. This was found to be true in counties that initially favored African Americans and in counties that initially favored Whites. Adopting a systems level perspective and taking account of initial conditions and trends can be critical for understanding inequalities.

In the shadow of whiteness: (re)exploring connections between history, enacted culture, and identity in a digital divide initiative

NASA Astrophysics Data System (ADS)

Kress, Tricia M.

2009-03-01

Who we are, our identities, as educators and learners cannot be considered separately from our histories and cultures. As such, many attempts at improving education for historically marginalized minority groups often revolve around finding ways to connect youth culture to curricula. What remains largely unexamined, however, are the history, culture, and identities of White educators and how these forces necessarily impact the ways in which curricula are designed for youth of color. By reconsidering DeGennaro and Brown's article "Youth Voices: Exploring Connections between History, Enacted Culture and Identity in a Digital Divide Initiative" through a lens of Whiteness, this article aims to illustrate that the histories and identities of African-American learners are dialectically related to the histories and identities of White educators. However, because Whiteness tends to be invisible, White educators have the privilege of not examining who they are and where they come from as part of their own identity development during the teaching and learning process. This article invites White educators to question what it means to educate youth of color by recognizing their own Whiteness as a powerful force in shaping pedagogical activities. By understanding both themselves and their students as racialized, cultural actors, White educators can begin to develop curricula that are truly empowering for minority youth.

Leukemia

MedlinePlus

Leukemia is cancer of the white blood cells. White blood cells help your body fight infection. Your blood cells form in your bone marrow. In leukemia, the bone marrow produces abnormal white blood cells. ...

White lions: Reintroduction to their natural and spiritual homelands

Treesearch

Linda Tucker

2007-01-01

The Global White Lion Protection Trust is committed to establishing the White Lions both as South Africa’s national treasure and as a global heritage. All conservation issues today are global issues. With many species, including many of the big cats, on the brink of extinction, urgent conservation measures need to be implemented to ensure their survival. The White...

Root system morphology of Oregon white oak on a glacial outwash soil.

Treesearch

Warren D. Devine; Constance A. Harrington

2005-01-01

Oregon white oak is reportedly a deeply rooted species, but its rooting habit on coarse-textured soils is undocumented. In the Puget Trough of western Washington, Oregon white oak grows in coarse-textured glacial outwash soils on lowland sites. Our objective was to quantify the gross root system morphology of Oregon white oak in these soils, thereby improving our...

"You Need to Do Love": Autoethnographic Mother-Writing in Applying ParentCrit

ERIC Educational Resources Information Center

Nishi, Naomi W.

2018-01-01

As the white (In an act of resistance to the maintenance and promotion of white supremacy, I do not capitalize "white" or acknowledge it as a proper noun.) mother of biracial children who look white, navigating critical race conversations as a part of Critical Race Parenting (ParentCrit) is just that, navigation. In this article I offer…

Is There "White Flight" into Private Schools? New Evidence from High School and Beyond

ERIC Educational Resources Information Center

Li, Mingliang

2009-01-01

In the U.S., white parents may choose to send their children to private schools in response to the local concentration of minority schoolchildren, commonly referred to as "white flight". This paper contributes to the existing literature by providing new evidence on white flight from the data set High School and Beyond (HSB). I find that a…

Dismantling the White Supremacy Embedded in Our Classrooms: White Faculty in Pursuit of More Equitable Educational Outcomes for Racially Minoritized Students

ERIC Educational Resources Information Center

Haynes, Chayla

2017-01-01

An investigation of the literature revealed that racial consciousness and the behaviors of White faculty in the classroom appeared linked. A conceptual framework, Racial Consciousness and Its Influence on the Behaviors of White Faculty in the Classroom, was subsequently developed and tested in this constructivist grounded theory study. Findings…

Limonene: attractant kairomone for white pine cone beetles (Coleoptera: Scolytidae) in an Eastern white pine seed orchard in Western North Carolina

Treesearch

Daniel R. Miller

2007-01-01

I report on the attraction of the white pine cone beetle, Canophthorus coniperda (Schwarz) (Coleoptera: Scolytidae), to traps baited with the host monoterpene limonene in western North Carolina. Both (+)- and (-)-limonene attracted male and female cone beetles to Japenese beetle traps in an eastern white pine, Pinus strobus L. seed...

21 CFR 137.250 - White corn meal.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 21 Food and Drugs 2 2010-04-01 2010-04-01 false White corn meal. 137.250 Section 137.250 Food and... Related Products § 137.250 White corn meal. (a) White corn meal is the food prepared by so grinding... fiber content of the finished corn meal is not less than 1.2 percent and not more than that of the...

21 CFR 137.250 - White corn meal.

Code of Federal Regulations, 2011 CFR

2011-04-01

... 21 Food and Drugs 2 2011-04-01 2011-04-01 false White corn meal. 137.250 Section 137.250 Food and... Related Products § 137.250 White corn meal. (a) White corn meal is the food prepared by so grinding... fiber content of the finished corn meal is not less than 1.2 percent and not more than that of the...

Silvicultural approaches for management of eastern white pine to minimize impacts of damaging agents

Treesearch

M.E. Ostry; G. Laflamme; S.A. Katovich

2010-01-01

Since the arrival to North America of Cronartium ribicola, management of eastern white pine has been driven by the need to avoid the actual or, in many areas, the perceived damage caused by white pine blister rust. Although white pine has lost much of its former dominance, it remains a valuable species for biotic diversity, aesthetics, wildlife...

Black and White Children's Racial Identification and Preference

ERIC Educational Resources Information Center

Mahan, Juneau

1976-01-01

Black and white children ranging in age from three to seven were asked to answer questions pertaining to a black doll and a white doll placed in front of them in order to partially replicate Clark's and Clark's 1941 study on racial identification and preference in children, including a white group of children. It was found that black and white…

Four African American Undergraduate Students and Two White Professors: Reflections of a Difficult Dialogue Program at a Predominately White University

ERIC Educational Resources Information Center

Green, Monica Roshawn Neblett

2013-01-01

This qualitative, phenomenological study examined the experiences of four African American undergraduate students and two White professors, all current or former affiliates of a predominantly White university (PWI) in the Midwest. The objective was to gain an understanding of whether their experiences were ones that have been addressed in the past…

Determining fire history from old white pine stumps in an oak-pine forest

Treesearch

Richard P. Guyette; Daniel C. Dey; Chris McDonell

1995-01-01

Fire scars on stumps of white pine (Pinus strobus L.) in a red oak (Quercus rubra L.) white pine forest near Bracebridge, Ontario, were dated using dendrochronological methods. A chronological record of fires that caused basal scarring is preserved in the remnant white pine stumps, which were estimated to be up to 135 years old...

50 CFR Table 1e to Part 660... - Whiting and non-whiting initial issuance allocation percentage for IFQ decided through the...

Code of Federal Regulations, 2014 CFR

2014-10-01

... 50 Wildlife and Fisheries 13 2014-10-01 2014-10-01 false Whiting and non-whiting initial issuance allocation percentage for IFQ decided through the harvest specifications, 2011 1e Table 1e to Part 660, Subpart C Wildlife and Fisheries FISHERY CONSERVATION AND MANAGEMENT, NATIONAL OCEANIC AND ATMOSPHERIC...

Emergence of White-Lie Telling in Children between 3 and 7 Years of Age.

ERIC Educational Resources Information Center

Talwar, Victoria; Lee, Kang

2002-01-01

Examined white-lie-telling behavior in 3- to 7-year-olds using task whereby the experimenter asked "Do I look OK for the photo?" with or without a visible mark on his nose. Found that most children in the experimental condition told white lies. Undergraduates viewing children's videotaped responses could not discriminate white-lie…

Blister rust control in the management of western white pine

Treesearch

Kenneth P. Davis; Virgil D. Moss

1940-01-01

The forest industry of the western white pine region depends on the production of white pine as a major species on about 2,670,000 acres of commercial forest land. Continued production of this species and maintenance of the forest industry at anything approaching its present level is impossible unless the white pine blister rust is controlled. Existing merchantable...

28. VIEW OF WHITE SAGE PRIOR TO BEING PAINTED COAST ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

28. VIEW OF WHITE SAGE PRIOR TO BEING PAINTED COAST GUARD COLORS OF BLACK AND WHITE. NOTE ALSO THE PHOTOGRAPH WAS TAKEN PRIOR TO THE INSTALLATION OF A-FRAME MAST AND BOOM AND TO THE CONSTRUCTION OF TURTLE DECK. - U.S. Coast Guard Cutter WHITE SAGE, U.S. Coast Guard 1st District Base, 1 Thames Street, Bristol, Bristol County, RI

More White Supremacy? "The Lord of the Rings" as Pro-American Imperialism

ERIC Educational Resources Information Center

Knaus, Christopher

2005-01-01

"The Lord of the Rings" continues Hollywood's recurrent theme of good triumphing over evil. The viewer is supposed to identify with the heroes, whiteness, and goodness, which of course triumphs over evil and blackness. Although the cast is made up almost entirely of White people, people also do not question this narrative of White supremacy. To…

Coincidence or Conspiracy? Whiteness, Policy and the Persistence of the Black/White Achievement Gap

ERIC Educational Resources Information Center

Gillborn, David

2008-01-01

Adopting an approach shaped by critical race theory (CRT) the paper proposes a radical analysis of the nature of race inequality in the English educational system. Focusing on the relative achievements of White school leavers and their Black (African Caribbean) peers, it is argued that long standing Black/White inequalities have been obscured by a…

21 CFR 864.8185 - Calibrator for red cell and white cell counting.

Code of Federal Regulations, 2014 CFR

2014-04-01

... counting is a device that resembles red or white blood cells and that is used to set instruments intended to count red cells, white cells, or both. It is a suspension of particles or cells whose size, shape... 21 Food and Drugs 8 2014-04-01 2014-04-01 false Calibrator for red cell and white cell counting...

21 CFR 864.8185 - Calibrator for red cell and white cell counting.

Code of Federal Regulations, 2012 CFR

2012-04-01

... counting is a device that resembles red or white blood cells and that is used to set instruments intended to count red cells, white cells, or both. It is a suspension of particles or cells whose size, shape... 21 Food and Drugs 8 2012-04-01 2012-04-01 false Calibrator for red cell and white cell counting...

21 CFR 864.8185 - Calibrator for red cell and white cell counting.

Code of Federal Regulations, 2011 CFR

2011-04-01

... counting is a device that resembles red or white blood cells and that is used to set instruments intended to count red cells, white cells, or both. It is a suspension of particles or cells whose size, shape... 21 Food and Drugs 8 2011-04-01 2011-04-01 false Calibrator for red cell and white cell counting...

21 CFR 864.8185 - Calibrator for red cell and white cell counting.

Code of Federal Regulations, 2013 CFR

2013-04-01

... counting is a device that resembles red or white blood cells and that is used to set instruments intended to count red cells, white cells, or both. It is a suspension of particles or cells whose size, shape... 21 Food and Drugs 8 2013-04-01 2013-04-01 false Calibrator for red cell and white cell counting...

White pine blister rust in high-elevation white pines: Screening for simply-inherited, hypersensitive resistance

Treesearch

Detlev R. Vogler; Annette Delfino-Mix; Anna W. Schoettle

2006-01-01

Recent concern about survival and recovery of high-elevation white pine ecosystems has returned white pine blister rust (caused by Cronartiurn ribicola) to prominence as a significant threat to forest health in the western U.S. (Sainman et al., 2003). This, in turn, has spurred new research into potential rust-resistance mechanisms in high-elevation...

A field test of procedures for evaluating and scheduling white-pine weevil control

Treesearch

Robert P. Ford; Robert L. Talerico; D. Gordon Mott

1965-01-01

Procedures have recently been developed that permit economic and biological information to be integrated in making decisions about the need for control against the white-pine weevil, and in scheduling control in young white pine plantations. The procedures are based upon studies of the magnitude of economic losses that result from weevil attack in white pine and upon...

77 FR 5780 - Record of Decision for the White Elk Military Operations Area White Pine and Elko Counties...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-02-06

... DEPARTMENT OF DEFENSE Department of the Air Force Record of Decision for the White Elk Military... Availability (NOA) of a Record of Decision (ROD). SUMMARY: On November 4, 2011, the United States Air Force... states the Air Force decision to select the Proposed Action to establish the White Elk MOA airspace...

Experiences of Faculty of Color Teaching in a Predominantly White University: Fostering Interracial Relationships among Faculty of Color and White Preservice Teachers

ERIC Educational Resources Information Center

Han, Keonghee Tao

2012-01-01

In this study, I recount my experiences teaching elementary literacy methods courses and interacting with my racial Others--my White preservice teachers/students, senior faculty, and administrators at a predominantly White university in the rural Mountain West. Using an ethnographic approach (Emerson, Fretz, & Shaw, 1995), I analyzed students'…

The Impact of White Boarding on Learning by Secondary School Biology Students

ERIC Educational Resources Information Center

Bush, Diandra E.; Kelly, Martin G.

2004-01-01

This project used a constructivist teaching method, "white boarding", in a high school biology classroom. This study was conducted to measure the effectiveness of white boarding activities. White boarding is a term used to describe the student use of a 3' x 2' sheet of tile board to record group work. After the teacher presents a…

Seeing, Hearing, and Talking Race: Lessons for White Teachers from Four Teachers of Color

ERIC Educational Resources Information Center

Michie, Gregory

2007-01-01

As student populations in K-12 schools in the United States continue to diversify and the teaching force remains largely White, cross-cultural teaching is an increasingly common phenomenon. In this article, a White teacher educator draws upon interviews with four teachers of color who work in Chicago public schools to examine ways White teachers…

White School Counselors Becoming Racial Justice Allies to Students of Color: A Call to the Field of School Counseling

ERIC Educational Resources Information Center

Moss, Lauren J.; Singh, Anneliese A.

2015-01-01

White school counselors must consider how racial identity, and whiteness as a construct, influences their work with students of color. This article addresses opportunities for White school counselors regarding how they may become allies to students of color and suggests way in which counselor educators can support the ally identity development in…

78 FR 10183 - Ryan White HIV/AIDS Program, Part C Early Intervention Services Grant Under the Ryan White HIV...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-02-13

... HIV/AIDS Program, Part C Early Intervention Services Grant Under the Ryan White HIV/AIDS Program... persons living with HIV/AIDS, HRSA will be providing a one-time noncompetitive Part C funds award to DFHS... provided critical Ryan White HIV/AIDS Program (Part C) Early Intervention Services for over 427 persons...

78 FR 78976 - Ryan White HIV/AIDS Program Part C Early Intervention Services Grant Under the Ryan White HIV...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-12-27

... HIV/AIDS Program Part C Early Intervention Services Grant Under the Ryan White HIV/AIDS Program AGENCY...: Notice of Ryan White HIV/AIDS Program Part C Early Intervention Services One-Time Noncompetitive Award To Ensure Continued HIV Primary Medical Care. SUMMARY: To prevent a lapse in comprehensive primary care...

75 FR 30338 - Endangered and Threatened Wildlife and Plants; 12-month Finding on a Petition to List the White...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-06-01

... Petition to List the White-tailed Prairie Dog as Endangered or Threatened AGENCY: Fish and Wildlife Service... announce a 12-month finding on a petition to list the white-tailed prairie dog (Cynomys leucurus) as... available scientific and commercial information, we find that listing the white-tailed prairie dog is not...

Influence of host resistance on the genetic structure of the white pine blister rust fungus in the western United States

Treesearch

B. A. Richardson; N. B. Klopfenstein; P. J. Zambino; G. I. McDonald; B. W. Geils; L. M. Carris

2008-01-01

Cronartium ribicola, the causal agent of white pine blister rust, has been devastating to five-needled white pines in North America since its introduction nearly a century ago. However, dynamic and complex interactions occur among C. ribicola, five-needled white pines, and the environment. To examine potential evolutionary...

Variation in flood tolerance of container-grown seedlings of swamp white oak, bur oak, and white oak

Treesearch

Michael P. Walsh; J.W. Van Sambeek; Mark V. Coggeshall

2008-01-01

How much variation in flood tolerance exists among seedlings within oak species, given the flood frequency of sites from which acorns are collected, has been largely unexplored. Our studies examined initial growth and flood tolerance for seedlings of swamp white oak (Quercus bicolor Willd.), bur oak (Q. macrocarpa L.), and white...

Comparison of hematologic and serologic profiles of broiler birds with normal (NORM) and severe (SEV) degrees of white striping in breast fillets

USDA-ARS?s Scientific Manuscript database

White striping is the white striation seen parallel to the direction of muscle fibers in broiler breast fillets and thighs. Broiler breast fillets can be categorized as normal (NORM), moderate (MOD) and severe (SEV) based on the degree of white striping. Histologically, the SEV fillets are character...

The Role Mentoring Plays in a White Female Novice Teacher's Perceptions of Her Enculturation into a Culturally Diverse Campus

ERIC Educational Resources Information Center

Noble, Erica Michelle

2012-01-01

Many of America's schools are populated with diverse student populations, while the teaching population remains largely White. This creates dissonance for White teachers and students of color. Possibly mentoring can assist novice White teachers as they enculturate into the profession and their culturally diverse campuses. This qualitative…

The Effects of Alcohol on the Emotional Displays of Whites in Interracial Groups

PubMed Central

Fairbairn, Catharine E.; Sayette, Michael A.; Levine, John M.; Cohn, Jeffrey F.; Creswell, Kasey G.

2017-01-01

Discomfort during interracial interactions is common among Whites in the U.S. and is linked to avoidance of interracial encounters. While the negative consequences of interracial discomfort are well-documented, understanding of its causes is still incomplete. Alcohol consumption has been shown to decrease negative emotions caused by self-presentational concern but increase negative emotions associated with racial prejudice. Using novel behavioral-expressive measures of emotion, we examined the impact of alcohol on displays of discomfort among 92 White individuals interacting in all-White or interracial groups. We used the Facial Action Coding System and comprehensive content-free speech analyses to examine affective and behavioral dynamics during these 36-minute exchanges (7.9 million frames of video data). Among Whites consuming nonalcoholic beverages, those assigned to interracial groups evidenced more facial and speech displays of discomfort than those in all-White groups. In contrast, among intoxicated Whites there were no differences in displays of discomfort between interracial and all-White groups. Results highlight the central role of self-presentational concerns in interracial discomfort and offer new directions for applying theory and methods from emotion science to the examination of intergroup relations. PMID:23356562

The effects of alcohol on the emotional displays of Whites in interracial groups.

PubMed

Fairbairn, Catharine E; Sayette, Michael A; Levine, John M; Cohn, Jeffrey F; Creswell, Kasey G

2013-06-01

Discomfort during interracial interactions is common among Whites in the U.S. and is linked to avoidance of interracial encounters. While the negative consequences of interracial discomfort are well-documented, understanding of its causes is still incomplete. Alcohol consumption has been shown to decrease negative emotions caused by self-presentational concern but increase negative emotions associated with racial prejudice. Using novel behavioral-expressive measures of emotion, we examined the impact of alcohol on displays of discomfort among 92 White individuals interacting in all-White or interracial groups. We used the Facial Action Coding System and comprehensive content-free speech analyses to examine affective and behavioral dynamics during these 36-min exchanges (7.9 million frames of video data). Among Whites consuming nonalcoholic beverages, those assigned to interracial groups evidenced more facial and speech displays of discomfort than those in all-White groups. In contrast, among intoxicated Whites there were no differences in displays of discomfort between interracial and all-White groups. Results highlight the central role of self-presentational concerns in interracial discomfort and offer new directions for applying theory and methods from emotion science to the examination of intergroup relations.

Cases of white piedra of the hair on the American continent: a case report and a systematic literature review.

PubMed

Ramírez-Soto, Max Carlos; Andagua-Castro, J; Quispe, Maria Antonieta; Aguilar-Ancori, Elsa G

2018-06-11

White piedra of the hair is a rare superficial fungal infection caused by several Trichosporon spp. 1 It typically manifests as white to light brown hard nodules, firmly attached to frontal, occipital, and parietal scalp hair. 1-9 The incidence of white piedra varies from country to country, and men and women of all ages are affected. 1 In Latin America, children and women appear to be the most affected with white piedra of the hair. 1-9 Given the variability of causative agents and the paucity of literature, very little is known about the geographical distribution of white piedra of the hair in American continent countries to help understand its epidemiology and aid in its diagnosis and treatment. In this report, we describe a case of white piedra of the hair in a Peruvian woman. We also conducted a systematic literature review of all case reports of white piedra on the American continent, with a view to determining the geographical distribution of the condition and identifying Trichosporon spp. commonly associated with this infection. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.

The Classical Pathways of Occipital Lobe Epileptic Propagation Revised in the Light of White Matter Dissection

PubMed Central

Latini, Francesco; Hjortberg, Mats; Aldskogius, Håkan; Ryttlefors, Mats

2015-01-01

The clinical evidences of variable epileptic propagation in occipital lobe epilepsy (OLE) have been demonstrated by several studies. However the exact localization of the epileptic focus sometimes represents a problem because of the rapid propagation to frontal, parietal, or temporal regions. Each white matter pathway close to the supposed initial focus can lead the propagation towards a specific direction, explaining the variable semiology of these rare epilepsy syndromes. Some new insights in occipital white matter anatomy are herein described by means of white matter dissection and compared to the classical epileptic patterns, mostly based on the central position of the primary visual cortex. The dissections showed a complex white matter architecture composed by vertical and longitudinal bundles, which are closely interconnected and segregated and are able to support specific high order functions with parallel bidirectional propagation of the electric signal. The same sublobar lesions may hyperactivate different white matter bundles reemphasizing the importance of the ictal semiology as a specific clinical demonstration of the subcortical networks recruited. Merging semiology, white matter anatomy, and electrophysiology may lead us to a better understanding of these complex syndromes and tailored therapeutic options based on individual white matter connectivity. PMID:26063964

A Search for a Surviving White Dwarf Companion in SN 1006

NASA Astrophysics Data System (ADS)

Kerzendorf, W. E.; Strampelli, G.; Shen, K. J.; Schwab, J.; Pakmor, R.; Do, T.; Buchner, J.; Rest, A.

2018-05-01

Multiple channels have been proposed to produce Type Ia supernovae, with many scenarios suggesting that the exploding white dwarf accretes from a binary companion pre-explosion. In almost all cases, theory suggests that this companion will survive. However, no such companion has been unambiguously identified in ancient supernova remnants - possibly falsifying the accretion scenario. Existing surveys, however, have only looked for stars as faint as ≈0.1L⊙ and thus might have missed a surviving white dwarf companion. In this work, we present very deep DECAM imaging (u, g, r, z) of the Type Ia supernova remnant SN 1006 specifically to search for a potential surviving white dwarf companion. We find no object that is consistent with a relatively young cooling white dwarf within the inner half of the SN 1006 remnant. We find that if there is a companion white dwarf, it must be redder than the standard white dwarf cooling track, or it must have formed long ago and cooled undisturbed for >108 yr. We conclude that our findings are consistent with the complete destruction of the secondary (such as in a merger) or an anomalously red or very dim surviving companion white dwarf.

Development of the navigation system for the visually impaired by using white cane.

PubMed

Hirahara, Yoshiaki; Sakurai, Yusuke; Shiidu, Yuriko; Yanashima, Kenji; Magatani, Kazushige

2006-01-01

A white cane is a typical support instrument for the visually impaired. They use a white cane for the detection of obstacles while walking. So, the area where they have a mental map, they can walk using white cane without help of others. However, they cannot walk independently in the unknown area, even if they use a white cane. Because, a white cane is a detecting device for obstacles and not a navigation device for there correcting route. Now, we are developing the navigation system for the visually impaired which uses indoor space. In Japan, sometimes colored guide lines to the destination are used for a normal person. These lines are attached on the floor, we can reach the destination, if we walk along one of these line. In our system, a developed new white cane senses one colored guide line, and makes notice to a user by vibration. This system recognizes the color of the line stuck on the floor by the optical sensor attached in the white cane. And in order to guide still more smoothly, infrared beacons (optical beacon), which can perform voice guidance, are also used.

Altered tract-specific white matter microstructure is related to poorer cognitive performance: The Rotterdam Study.

PubMed

Cremers, Lotte G M; de Groot, Marius; Hofman, Albert; Krestin, Gabriel P; van der Lugt, Aad; Niessen, Wiro J; Vernooij, Meike W; Ikram, M Arfan

2016-03-01

White matter microstructural integrity has been related to cognition. Yet, the potential role of specific white matter tracts on top of a global white matter effect remains unclear, especially when considering specific cognitive domains. Therefore, we determined the tract-specific effect of white matter microstructure on global cognition and specific cognitive domains. In 4400 nondemented and stroke-free participants (mean age 63.7 years, 55.5% women), we obtained diffusion magnetic resonance imaging parameters (fractional anisotropy and mean diffusivity) in 14 white matter tracts using probabilistic tractography and assessed cognitive performance with a cognitive test battery. Tract-specific white matter microstructure in all supratentorial tracts was associated with poorer global cognition. Lower fractional anisotropy in association tracts, primarily the inferior fronto-occipital fasciculus, and higher mean diffusivity in projection tracts, in particular the posterior thalamic radiation, most strongly related to poorer cognition. Altered white matter microstructure related to poorer information processing speed, executive functioning, and motor speed, but not to memory. Tract-specific microstructural changes may aid in better understanding the mechanism of cognitive impairment and neurodegenerative diseases. Copyright © 2016 Elsevier Inc. All rights reserved.

A case control study: White-collar defendants compared with defendants charged with other nonviolent theft.

PubMed

Poortinga, Ernest; Lemmen, Craig; Jibson, Michael D

2006-01-01

We examined the clinical, criminal, and sociodemographic characteristics of all white-collar crime defendants referred to the evaluation unit of a state center for forensic psychiatry. With 29,310 evaluations in a 12-year period, we found 70 defendants charged with embezzlement, 3 with health care fraud, and no other white-collar defendants (based on the eight crimes widely accepted as white-collar offenses). In a case-control study design, the 70 embezzlement cases were compared with 73 defendants charged with other forms of nonviolent theft. White-collar defendants were found to have a higher likelihood of white race (adjusted odds ratio (adj. OR) = 4.51), more years of education (adj. OR = 3471), and a lower likelihood of substance abuse (adj. OR = .28) than control defendants. Logistic regression modeling showed that the variance in the relationship between unipolar depression and white-collar crime was more economically accounted for by education, race, and substance abuse.

Imaging camera system of OYGBR-phosphor-based white LED lighting

NASA Astrophysics Data System (ADS)

Kobashi, Katsuya; Taguchi, Tsunemasa

2005-03-01

The near-ultraviolet (nUV) white LED approach is analogous to three-color fluorescent lamp technology, which is based on the conversion of nUV radiation to visible light via the photoluminescence process in phosphor materials. The nUV light is not included in the white light generation from nUV-based white LED devices. This technology can thus provide a higher quality of white light than the blue and YAG method. A typical device demonstrates white luminescence with Tc=3,700 K, Ra > 93, K > 40 lm/W and chromaticity (x, y) = (0.39, 0.39), respectively. The orange, yellow, green and blue OYGB) or orange, yellow, red, green and blue (OYRGB) device shows a luminescence spectrum broader than of an RGB white LED and a better color rendering index. Such superior luminous characteristics could be useful for the application of several kinds of endoscope. We have shown the excellent pictures of digestive organs in a stomach of a dog due to the strong green component and high Ra.

Drosophila melanogaster White Mutant w1118 Undergo Retinal Degeneration

PubMed Central

Ferreiro, María José; Pérez, Coralia; Marchesano, Mariana; Ruiz, Santiago; Caputi, Angel; Aguilera, Pedro; Barrio, Rosa; Cantera, Rafael

2018-01-01

Key scientific discoveries have resulted from genetic studies of Drosophila melanogaster, using a multitude of transgenic fly strains, the majority of which are constructed in a genetic background containing mutations in the white gene. Here we report that white mutant flies from w1118 strain undergo retinal degeneration. We observed also that w1118 mutants have progressive loss of climbing ability, shortened life span, as well as impaired resistance to various forms of stress. Retinal degeneration was abolished by transgenic expression of mini-white+ in the white null background w1118. We conclude that beyond the classical eye-color phenotype, mutations in Drosophila white gene could impair several biological functions affecting parameters like mobility, life span and stress tolerance. Consequently, we suggest caution and attentiveness during the interpretation of old experiments employing white mutant flies and when planning new ones, especially within the research field of neurodegeneration and neuroprotection. We also encourage that the use of w1118 strain as a wild-type control should be avoided. PMID:29354028

Gender and racial favouritism in black and white preschool girls.

PubMed

Kurtz-Costes, Beth; Defreitas, Stacie C; Halle, Tamara G; Kinlaw, C Ryan

2011-06-01

The authors examined gender and racial preferential behaviour in 108 3- and 5-year-old Black and White girls. Children set up a birthday party for dolls that differed in gender and racial physical characteristics. Whereas White girls showed favouritism towards the doll most closely resembling themselves in both gender and race, Black girls showed most favouritism towards the White girl doll. Black girls were more likely to show preference based on gender rather than race, whereas White girls were equally likely to show race- or gender-based favouritism. Among White 5-year-olds, greater prior interaction with Blacks was positively associated with race-related favouritism (i.e., secondary preference to the White boy doll rather than the Black girl doll). Interracial contact was unrelated to racial favouritism among the other three groups. Results demonstrate the salience of gender identity during the preschool years, and indicate that majority/minority status and intergroup contact shape the development of collective identity and social behaviour.

The hidden-Markov brain: comparison and inference of white matter hyperintensities on magnetic resonance imaging (MRI)

NASA Astrophysics Data System (ADS)

Pham, Tuan D.; Salvetti, Federica; Wang, Bing; Diani, Marco; Heindel, Walter; Knecht, Stefan; Wersching, Heike; Baune, Bernhard T.; Berger, Klaus

2011-02-01

Rating and quantification of cerebral white matter hyperintensities on magnetic resonance imaging (MRI) are important tasks in various clinical and scientific settings. As manual evaluation is time consuming and imprecise, much effort has been made to automate the quantification of white matter hyperintensities. There is rarely any report that attempts to study the similarity/dissimilarity of white matter hyperintensity patterns that have different sizes, shapes and spatial localizations on the MRI. This paper proposes an original computational neuroscience framework for such a conceptual study with a standpoint that the prior knowledge about white matter hyperintensities can be accumulated and utilized to enable a reliable inference of the rating of a new white matter hyperintensity observation. This computational approach for rating inference of white matter hyperintensities, which appears to be the first study, can be utilized as a computerized rating-assisting tool and can be very economical for diagnostic evaluation of brain tissue lesions.

Mass loss, levitation, accretion, and the sharp-lined features in hot white dwarfs

NASA Technical Reports Server (NTRS)

Bruhweiler, F. C.; Kondo, Y.

1983-01-01

A study has been conducted of eight white dwarfs, including seven DA and one He-rich types. The study is based on high-resolution observations conducted with the aid of the International Ultraviolet Explorer. Four of the dwarfs show features related to heavy elements which are not interstellar in origin. It is tentatively suggested that, at least in the hottest low-gravity DA white dwarfs, the observed narrow-lined features are formed in expanding halos or winds associated with the white dwarfs. Theoretically, stable white dwarf halos should actually be coronae with temperatures in excess of 1,000,000 K. However, the observed narrow-lined features do not suggest such high temperatures. The observed radial velocities suggest weak stellar winds in two hot white dwarfs, namely, G191-B2B and 2111+49. It is tentatively proposed that radiative levitation can explain the appearance of the observed metallic lines in the hot DA white dwarfs.

Implicit and Explicit Racial Attitudes Changed During Black Lives Matter.

PubMed

Sawyer, Jeremy; Gampa, Anup

2018-07-01

Lab-based interventions have been ineffective in changing individuals' implicit racial attitudes for more than brief durations, and exposure to high-status Black exemplars like Obama has proven ineffective in shifting societal-level racial attitudes. Antiracist social movements, however, offer a potential societal-level alternative for reducing racial bias. Racial attitudes were examined before and during Black Lives Matter (BLM) and its high points of struggle with 1,369,204 participants from 2009 to 2016. After controlling for changes in participant demographics, overall implicit attitudes were less pro-White during BLM than pre-BLM, became increasingly less pro-White across BLM, and were less pro-White during most periods of high BLM struggle. Considering changes in implicit attitudes by participant race, Whites became less implicitly pro-White during BLM, whereas Blacks showed little change. Regarding explicit attitudes, Whites became less pro-White and Blacks became less pro-Black during BLM, each moving toward an egalitarian "no preference" position.

Manganese-Doped One-Dimensional Organic Lead Bromide Perovskites with Bright White Emissions.

PubMed

Zhou, Chenkun; Tian, Yu; Khabou, Oussama; Worku, Michael; Zhou, Yan; Hurley, Joseph; Lin, Haoran; Ma, Biwu

2017-11-22

Single-component white-emitting phosphors are highly promising to simplify the fabrication of optically pumped white light-emitting diodes. To achieve white emission, precise control of the excited state dynamics is required for a single-component system to generate emissions with different energies in the steady state. Here, we report a new class of white phosphors based on manganese (Mn)-doped one-dimensional (1D) organic lead bromide perovskites. The bright white emission is the combination of broadband blue emission from the self-trapped excited states of the 1D perovskites and red emission from the doped Mn 2+ ions. Because of the indirect nature of the self-trapped excited states in 1D perovskites, there is no energy transfer from these states to the Mn 2+ ions, resulting in an efficient dual emission. As compared to the pristine 1D perovskites with bluish-white emission, these Mn-doped 1D perovskites exhibit much higher color rendering index of up to 87 and photoluminescence quantum efficiency of up to 28%.

The burning issue of white phosphorus: a case report and review of the literature.

PubMed

Aviv, Uri; Kornhaber, Rachel; Harats, Moti; Haik, Josef

2017-01-01

Burns from white phosphorus are rare and remain a challenge for clinicians. White phosphorus burns are often associated with smaller surface areas and high morbidity rates. Classed as a chemical burn, white phosphorus is used for military purposes and within industry, for the manufacture of fireworks and agricultural products. In this report, we discuss the case of a 40 years old female who sustained 2% Total Body Surface Area partial to full thickness burns from white phosphorus. The burns were treated conservatively with mafenide acetate on the medial calf and dorsum of foot and Flaminal Forte was used for the palmar region. The patient was discharged 22 days after admission and followed up in the outpatient clinic. Despite the use of pressure garments, hypertrophic scarring began to develop on the dorsum of her right foot. During peacetime, white phosphorus possess a significant danger to civilians. Awareness of the unique nature of white phosphorus among military burn clinicians should be emphasized.

Does Racial Isolation in School Lead to Long-Term Disadvantages? Labor Market Consequences of High School Racial Composition.

PubMed

Gamoran, Adam; Barfels, Sarah; Collares, Ana Cristina

2016-01-01

School racial composition has modest effects on test score gaps, but evidence of a longer-term impact is scarce. Perpetuation theory suggests that blacks who attend schools with higher proportions of white classmates may have better job outcomes. Multilevel analyses of two national longitudinal surveys reveal no effects of high school racial composition on occupational status, employment, or annual earnings for blacks or whites. For other minority groups, attending schools with more whites impedes occupational advancement. For all groups, however, school racial composition predicts workplace racial composition: Whites who attend high schools with higher proportions of white students have higher proportions of white coworkers, while nonwhites who attend schools with higher proportions of whites have fewer same-race coworkers. The findings are modest in size but robust to alternative specifications, and sensitivity analyses support a causal interpretation for same-race coworkers. These results support perpetuation theory for workplace composition but not for stratification outcomes.

Spectrum of dermoscopic patterns in lichen planus: a case series from China.

PubMed

Tan, Cheng; Min, Zhong-Sheng; Xue, Yanning; Zhu, Wen-Yuan

2014-01-01

Dermoscopy has been shown to be a promising method to facilitate the diagnosis of lichen planus (LP) outside of China. To investigate the spectrum of dermoscopic patterns in Chinese LP patients. The clinical data and dermoscopic patterns of nine LP cases with a total of 43 lesions were evaluated. To the naked eye, 20.97% of the lesions exhibited graying Wickham striae (WS); however, 37.5% presented with white streaks of annular, reticular, or leaf venation patterns under dermoscopy. Blue-white veils were occasionally observed in the center. Pigment patterns varied from dots, globules, and peppered pigment to pigmented lines, which were unrelated to the pigment network of the skin. At the periphery of the WS, red fine lines ran parallel to the delicate white streaming lines. WS exhibits five morphological patterns (leaf venation, reticular, white dots, circular and radial streaming) and three color patterns (homogeneous crystalline white, blue-white veil and yellowish-white). The pigment patterns consisted of dots/globules, peppered pigments and pigment. streaming lines.

THE SPECTRAL EVOLUTION OF CONVECTIVE MIXING WHITE DWARFS, THE NON-DA GAP, AND WHITE DWARF COSMOCHRONOLOGY

DOE Office of Scientific and Technical Information (OSTI.GOV)

Chen, Eugene Y.; Hansen, Brad M. S., E-mail: eyc@mail.utexas.edu, E-mail: hansen@astro.ucla.edu

The spectral distribution of field white dwarfs shows a feature called the 'non-DA gap'. As defined by Bergeron et al., this is a temperature range (5100-6100 K) where relatively few non-DA stars are found, even though such stars are abundant on either side of the gap. It is usually viewed as an indication that a significant fraction of white dwarfs switch their atmospheric compositions back and forth between hydrogen-rich and helium-rich as they cool. In this Letter, we present a Monte Carlo model of the Galactic disk white dwarf population, based on the spectral evolution model of Chen and Hansen.more » We find that the non-DA gap emerges naturally, even though our model only allows white dwarf atmospheres to evolve monotonically from hydrogen-rich to helium-rich through convective mixing. We conclude by discussing the effects of convective mixing on the white dwarf luminosity function and the use thereof for Cosmochronology.« less

Factors determining presence of passerines breeding within White Stork Ciconia ciconia nests

NASA Astrophysics Data System (ADS)

Zbyryt, Adam; Jakubas, Dariusz; Tobolka, Marcin

2017-10-01

Nests of White Stork Ciconia ciconia are commonly used by various passerines as nesting sites. In this study, we investigated factors determining presence and number of pairs of species breeding within White Stork nests in an extensive farmland in NE Poland. In 133 (57%) out of 233 White Stork nests, we found at least one breeding pair of passerine bird. These were from three species: House Sparrows Passer domesticus (68% of 133 nests with co-breeding), Tree Sparrows Passer montanus (65%), and Starlings Sturnus vulgaris (30%). The probability of breeding passerines within White Stork nests increased with increasing nest thickness, and was significantly higher in currently occupied nests. Sparrows were more likely to breed in White Stork nests located on electricity poles, situated closer to settlements and surrounded mainly by arable fields where meadows were not prevalent. In this paper, we show that White Stork nests are favorable nesting sites for passerines, as they are well insulated and provide an anti-predatory shield.

Origin of the DA and non-DA white dwarf stars

NASA Technical Reports Server (NTRS)

Shipman, Harry L.

1989-01-01

Various proposals for the bifurcation of the white dwarf cooling sequence are reviewed. 'Primordial' theories, in which the basic bifurcation of the white dwarf sequence is rooted in events predating the white dwarf stage of stellar evolution, are discussed, along with the competing 'mixing' theories in which processes occurring during the white dwarf stage are responsible for the existence of DA or non-DA stars. A new proposal is suggested, representing a two-channel scenario. In the DA channel, some process reduces the hydrogen layer mass to the value of less than 10 to the -7th. The non-DA channel is similar to that in the primordial scenario. These considerations suggest that some mechanism operates in both channels to reduce the thickness of the outermost layer of the white dwarf. It is also noted that accretion from the interstellar medium has little to do with whether a particular white dwarf becomes a DA or a non-DA star.

The critical binary star separation for a planetary system origin of white dwarf pollution

NASA Astrophysics Data System (ADS)

Veras, Dimitri; Xu, Siyi; Rebassa-Mansergas, Alberto

2018-01-01

The atmospheres of between one quarter and one half of observed single white dwarfs in the Milky Way contain heavy element pollution from planetary debris. The pollution observed in white dwarfs in binary star systems is, however, less clear, because companion star winds can generate a stream of matter which is accreted by the white dwarf. Here, we (i) discuss the necessity or lack thereof of a major planet in order to pollute a white dwarf with orbiting minor planets in both single and binary systems, and (ii) determine the critical binary separation beyond which the accretion source is from a planetary system. We hence obtain user-friendly functions relating this distance to the masses and radii of both stars, the companion wind, and the accretion rate on to the white dwarf, for a wide variety of published accretion prescriptions. We find that for the majority of white dwarfs in known binaries, if pollution is detected, then that pollution should originate from planetary material.

Drosophila melanogaster White Mutant w 1118 Undergo Retinal Degeneration.

PubMed

Ferreiro, María José; Pérez, Coralia; Marchesano, Mariana; Ruiz, Santiago; Caputi, Angel; Aguilera, Pedro; Barrio, Rosa; Cantera, Rafael

2017-01-01

Key scientific discoveries have resulted from genetic studies of Drosophila melanogaster , using a multitude of transgenic fly strains, the majority of which are constructed in a genetic background containing mutations in the white gene. Here we report that white mutant flies from w 1118 strain undergo retinal degeneration. We observed also that w 1118 mutants have progressive loss of climbing ability, shortened life span, as well as impaired resistance to various forms of stress. Retinal degeneration was abolished by transgenic expression of mini-white + in the white null background w 1118 . We conclude that beyond the classical eye-color phenotype, mutations in Drosophila white gene could impair several biological functions affecting parameters like mobility, life span and stress tolerance. Consequently, we suggest caution and attentiveness during the interpretation of old experiments employing white mutant flies and when planning new ones, especially within the research field of neurodegeneration and neuroprotection. We also encourage that the use of w 1118 strain as a wild-type control should be avoided.

Heart Disease Death Rates Among Blacks and Whites Aged ≥35 Years - United States, 1968-2015.

PubMed

Van Dyke, Miriam; Greer, Sophia; Odom, Erika; Schieb, Linda; Vaughan, Adam; Kramer, Michael; Casper, Michele

2018-03-30

Heart disease is the leading cause of death in the United States. In 2015, heart disease accounted for approximately 630,000 deaths, representing one in four deaths in the United States. Although heart disease death rates decreased 68% for the total population from 1968 to 2015, marked disparities in decreases exist by race and state. 1968-2015. The National Vital Statistics System (NVSS) data on deaths in the United States were abstracted for heart disease using diagnosis codes from the eighth, ninth, and tenth revisions of the International Classification of Diseases (ICD-8, ICD-9, and ICD-10) for 1968-2015. Population estimates were obtained from NVSS files. National and state-specific heart disease death rates for the total population and by race for adults aged ≥35 years were calculated for 1968-2015. National and state-specific black-white heart disease mortality ratios also were calculated. Death rates were age standardized to the 2000 U.S. standard population. Joinpoint regression was used to perform time trend analyses. From 1968 to 2015, heart disease death rates decreased for the total U.S. population among adults aged ≥35 years, from 1,034.5 to 327.2 per 100,000 population, respectively, with variations in the magnitude of decreases by race and state. Rates decreased for the total population an average of 2.4% per year, with greater average decreases among whites (2.4% per year) than blacks (2.2% per year). At the national level, heart disease death rates for blacks and whites were similar at the start of the study period (1968) but began to diverge in the late 1970s, when rates for blacks plateaued while rates for whites continued to decrease. Heart disease death rates among blacks remained higher than among whites for the remainder of the study period. Nationwide, the black-white ratio of heart disease death rates increased from 1.04 in 1968 to 1.21 in 2015, with large increases occurring during the 1970s and 1980s followed by small but steady increases until approximately 2005. Since 2005, modest decreases have occurred in the black-white ratio of heart disease death rates at the national level. The majority of states had increases in black-white mortality ratios from 1968 to 2015. The number of states with black-white mortality ratios >1 increased from 16 (40%) to 27 (67.5%). Although heart disease death rates decreased both for blacks and whites from 1968 to 2015, substantial differences in decreases were found by race and state. At the national level and in most states, blacks experienced smaller decreases in heart disease death rates than whites for the majority of the period. Overall, the black-white disparity in heart disease death rates increased from 1968 to 2005, with a modest decrease from 2005 to 2015. Since 1968, substantial increases have occurred in black-white disparities of heart disease death rates in the United States at the national level and in many states. These increases appear to be due to faster decreases in heart disease death rates for whites than blacks, particularly from the late 1970s until the mid-2000s. Despite modest decreases in black-white disparities at the national level since 2005, in 2015, heart disease death rates were 21% higher among blacks than among whites. This study demonstrates the use of NVSS data to conduct surveillance of heart disease death rates by race and of black-white disparities in heart disease death rates. Continued surveillance of temporal trends in heart disease death rates by race can provide valuable information to policy makers and public health practitioners working to reduce heart disease death rates both for blacks and whites and disparities between blacks and whites.