bluuebunny/crossref_metadata_2025_split huggingface dataset:
Possible roles of vacuolar H+‐ATPase and mitochondrial function in tolerance to air‐drying stress revealed by genome‐wide screening of Saccharomyces cerevisiae deletion strains
Authors: Shima Jun , Ando Akira , Takagi Hiroshi 
Published: January 2008

AbstractYeasts used in bread making are exposed to air‐drying stress during dried yeast production processes. To clarify the genes required for air‐drying tolerance, we performed genome‐wide screening using the complete deletion strain collection of diploid Saccharomyces cerevisiae. The screening identified 278 gene deletions responsible for air‐drying sensitivity. These genes were classified based on their cellular function and on the localization of their gene products. The results showed that the genes required for air‐drying tolerance were frequently involved in mitochondrial functions and in connection with vacuolar H+‐ATPase, which plays a role in vacuolar acidification. To determine the role of vacuolar acidification in air‐drying stress tolerance, we monitored intracellular pH. The results showed that intracellular acidification was induced during air‐drying and that this acidification was amplified in a deletion mutant of the VMA2 gene encoding a component of vacuolar H+‐ATPase, suggesting that vacuolar H+‐ATPase helps maintain intracellular pH homeostasis, which is affected by air‐drying stress. To determine the effects of air‐drying stress on mitochondria, we analysed the mitochondrial membrane potential under air‐drying stress conditions using MitoTracker. The results showed that mitochondria were extremely sensitive to air‐drying stress, suggesting that a mitochondrial function is required for tolerance to air‐drying stress. We also analysed the correlation between oxidative‐stress sensitivity and air‐drying‐stress sensitivity. The results suggested that oxidative stress is a critical determinant of sensitivity to air‐drying stress, although ROS‐scavenging systems are not necessary for air‐drying stress tolerance. Copyright © 2008 John Wiley & Sons, Ltd.
Emergency Department Thoracotomy: Survival of the Least Expected
Authors: Seamon Mark J. , Fisher Carol A. , Gaughan John P. , Kulp Heather , Dempsey Daniel T. , Goldberg Amy J. 
Published: January 2008

AbstractAlthough emergency department thoracotomy (EDT) is often considered a controversial “last chance” method of resuscitation, we hypothesized that EDT performed in a busy urban Level I trauma center has significant salvage rates despite the absence of traditional survival predictors. A retrospective review revealed that 180 patients underwent EDT after traumatic arrest for penetrating injury between 2000 and 2005. All were deemed nonsalvageable by other resuscitation methods. Injury mechanism and location, signs of life (SOLs), initial cardiac rhythm, and presence of vital signs were analyzed. In total, 23 patients survived hospitalization neurologically intact. Compared to nonsurvivors, survivors more often suffered multiple stab wounds (21.7% vs. 1.9%, p = 0.001), presented with field (95.7% vs. 72.6%, p = 0.016) and ED (87.0% vs. 60.5%, p = 0.014) SOLs, had sustainable cardiac rhythms (sinus tachycardia, 43.5% vs. 10.2%, p = 0.001; normal sinus rhythm, 17.4% vs. 4.5%, p = 0.037), and had measurable vital signs (65.2% vs. 25.5%; p = 0.001). However, only 3 of 23 (13.0%) survivors had all survival predictors, and one survivor had none. Frequent predictors in survivors were field SOLs (95.7%), ED SOLs (87.0%), salvageable initial cardiac rhythms (78.3%), and obtainable vital signs (65.2%). Stabbing mechanism (30.4%) and cardiac injury location (30.4%) were least common. Had a strict policy of EDT performance based solely on the presence of survival predictors been followed and EDT withheld, several patients who ultimately survived would have died. Our study suggests that EDT is a technique that should be utilized for patients with critical penetrating injuries even in the absence of many traditional survival predictors.
Improved renal survival in Japanese children with IgA nephropathy
Authors: Yata Nahoko , Nakanishi Koichi , Shima Yuko , Togawa Hiroko , Obana Mina , Sako Mayumi , Nozu Kandai , Tanaka Ryojiro , Iijima Kazumoto , Yoshikawa Norishige 
Published: January 2008

AbstractSince the beginning of the 1990s, Japanese medical practitioners have extensively prescribed angiotensin-converting enzyme (ACE) inhibitors for children with mild IgA nephropathy (IgA-N) and steriods for those with severe IgA-N. We have performed a retrospective cohort study to clarify whether the long-term outcome has improved in Japanese children with IgA-N. Renal survival was defined as the time from onset to end-stage renal disease (ESRD). We divided the study period into two time periods based on the occurrence of the initial renal biopsy:1976–1989 and 1990–2004. Actuarial survivals were calculated by Kaplan–Meier method, and comparisons were made with the logrank test. The Cox proportional hazard model was used for multivariate analysis. Between 1976 and 2004, 500 children were diagnosed as having IgA-N in our hospitals. The actuarial renal survival from the time of apparent disease onset was 96.4% at 10 years, 84.5% at 15 years and 73.9% at 20 years. Renal survival in the 1990–2004 period was significantly better than that in 1976–1989 (p = 0.008), and a marked improvement in renal survival in patients with severe IgA-N was also observed (p = 0.0003). Multivariate analysis indicated that diagnosis year was a significant factor for ESRD-free survival independently of baseline characteristics. The results of this study show that there has been an improvement in terms of renal survival in Japanese children with IgA-N.
Synthesis and Characterization of Magnetic Metal-encapsulated Multi-walled Carbon Nanobeads
Authors: Leela Mohana Reddy A , Ramaprabhu S 
Published: January 2008

Abstract
A novel, cost-effective, easy and single-step process for the synthesis of large quantities of magnetic metal-encapsulated multi-walled carbon nanobeads (MWNB) and multi-walled carbon nanotubes (MWNT) using catalytic chemical vapour deposition of methane over Mischmetal-based AB3alloy hydride catalyst is presented. The growth mechanism of metal-encapsulated MWNB and MWNT has been discussed based on the catalytically controlled root-growth mode. These carbon nanostructures have been characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM and HRTEM), energy dispersive analysis of X-ray (EDAX) and thermogravimetric analysis (TGA). Magnetic properties of metal-filled nanobeads have been studied using PAR vibrating sample magnetometer up to a magnetic field of 10 kOe, and the results have been compared with those of metal-filled MWNT.
Disputing Contraception: Muslim Reform, Secular Change and Fertility
Authors: JEFFERY PATRICIA , JEFFERY ROGER , JEFFREY CRAIG 
Published: January 2008

AbstractIn South Asia, Muslim reformers have often attempted to ‘rationalize’ and gentrify the everyday behaviour of ordinary Muslims. Yet, despite the existence of discussions of contraceptive techniques in theyūnān-ī tibbcurricula of 19th century India and the apparent affinity between rationalism and fertility regulation, contraception was rarely discussed in public debates involving Muslim reformers. In this paper we discuss some of the relationships between élite debates among Muslim leaders and the grassroots behaviour of villagers in rural Bijnor, in western Uttar Pradesh. Villagers' voices are ambiguous, with fears for mother and child health surfacing as often as concerns for religious orthodoxy and one's destiny in the afterlife. In addition, many of the villagers' views of Islam were much more restrictive than those of the locally accepted authoritative voices: although the staff atDaru'l‘Ulūm, Deoband, saw much modern contraception as an unwelcome sign of modernity, their discussions of the acceptability of family planning circled round notions ofmajbūrī[compulsion], repentance, and the unfathomable mercy of Allah. We conclude that focusing on local notions of Islam to understand the fertility behaviour of rural Muslims is less fruitful than considering a “political economy of hopelessness” that, increasingly since 1947, affects many Muslims in north India.
Exogenous hyalin and sea urchin gastrulation, Part II: hyalin, an interspecies cell adhesion molecule
Authors: Alvarez M. , Nnoli J. , Carroll E.J. , Hutchins-Carroll V. , Razinia Z. , Oppenheimer S.B. 
Published: January 2008

SummaryThe 330 kDa fibrillar glycoprotein hyalin is a well known component of the sea urchin embryo extracellular hyaline layer. Only recently, the main component of hyalin, the hyalin repeat domain, has been identified in organisms as widely divergent as bacteria and humans using the GenBank database and therefore its possible function has garnered a great deal of interest. In the sea urchin, hyalin serves as an adhesive substrate in the developing embryo and we have recently shown that exogenously added purified hyalin from Strongylocentrotus purpuratus embryos blocks a model cellular interaction in these embryos, archenteron elongation/attachment to the blastocoel roof. It is important to demonstrate the generality of this result by observing if hyalin from one species of sea urchin blocks archenteron elongation/attachment in another species. Here we show in three repeated experiments, with 30 replicate samples for each condition, that the same concentration of S. purpuratus hyalin (57 μg/ml) that blocked the interaction in living S. purpuratus embryos blocked the same interaction in living Lytechinus pictus embryos. These results correspond with the known crossreactivity of antibody against S. purpuratus hyalin with L. pictus hyalin. We propose that hyalin–hyalin receptor binding may mediate this adhesive interaction. The use of a microplate assay that allows precise quantification of developmental effects should help facilitate identification of the function of hyalin in organisms as divergent as bacteria and humans.
Do racehorses and Greyhound dogs exhibit a gender difference in running speed?
Authors: Entin Pauline 
Published: January 2008

AbstractAt any level of competition, men run faster than women. Consequently, a male speed advantage is often presumed for other species. This assumption was tested in two animals bred for speed: horses and dogs. Results from Thoroughbred (TB), Standardbred (STB) and Greyhound (GH) races were analysed by ANOVA to compare the speeds of victorious males, neutered males (TB and STB only) and females. Separate analyses were run for shorter (TB: ≤ 1609 m, GH: 503 m) and longer (TB: >1609 m, GH: 603.5 m) TB and GH races. All STB races (trotters and pacers) were 1609 m. In TB races, intact males were 0.7% faster than females at ≤ 1609 m (n = 305;P < 0.01) and 1.4% faster at >1609 m (n = 194;P < 0.01). The speed of neutered males was equivalent to that of females at both distances. Gender accounted for 3.8 and 10.7% of the variance in speed at short and long distances, respectively. In STB pacers, intact males were 1.5% faster than females and gender accounted for 10.1% of the variance in speed (n = 96;P < 0.01). Gender was not a significant predictor of STB trotter (n = 95) or GH speed at 503 m (n = 146) or 603.5 m (n = 23). In conclusion, gender has a significant effect on speed of TBs and STB pacers. Although the effect size is small, it may be significant for racing; in a 7 furlong (1408 m) TB race, the 0.7% difference translates to an advantage of several lengths.
WHO OPPOSES IMMIGRATION?
Authors: Pettigrew Thomas F. , Wagner Ulrich , Christ Oliver 
Published: January 2008

AbstractAre the predictors of anti-immigration attitudes consistent across countries with diverse immigration histories and policies? We hypothesize that the key predictors of opposition to immigration are indeed relatively consistent across industrial nations. We test this hypothesis with two surveys using probability samples of German citizens. We then compare our findings with those obtained in recent studies of immigration opinions in Europe generally, and in two of the world's leading immigration-receiving nations: Canada and the United States. Striking similarities emerge in the findings across structural, demographic, contact, economic, political, personality, and threat predictors. Opposition to immigration is routinely found strongest among the older and less-educated segments of the population who live in areas with anti-immigration norms and little contact with immigrants. Anti-immigration attitudes also correlate with political conservatism and alienation, economic deprivation, and especially with authoritarianism, social dominance orientation, and perceived collective threat.
COMFORT ZONES
Authors: Charles Camille Zubrinsky 
Published: January 2008

AbstractThe remarkable increase in immigration from Asia and Latin America requires a rethinking of multiracial analyses of neighborhood racial-composition preferences. This research addresses two interrelated questions: (1) since spatial mobility is so central to social mobility, how do recent Asian and Latino/a immigrants develop ideas about the racial and ethnic composition of the neighborhoods in which they want to live; and (2) what are the implications of processes of immigrant adaptation for the likely dynamics of race and ethnic relations in increasingly diverse communities? Guided by Massey's spatial assimilation model and previous studies of neighborhood racial-composition preferences, this research underscores the critical importance of immigration and assimilation as influences on preferences for same-race, White, and Black neighbors. Data are from the 1993–1994 Los Angeles Survey of Urban Inequality (N = 1921). Results point to the critical role of acculturation—the accumulation of time in the United States and English-language proficiency/use, as well as racial attitudes—in understanding what motivates preferences for these diverse groups, and to the complexities of accurately modeling preferences among largely foreign-born populations. Preferences for both same-race and White neighbors vary by the length of time that immigrants have accumulated in the United States and their ability to communicate effectively in English. English-language fluency is a particularly salient predictor of preferences among recent immigrants. Consistent with prior research on preferences, racial stereotypes stand out as particularly potent predictors of preferences; however, their influence is weakest among the most recent immigrants, coming to resemble those of the native-born with increasing years of U.S. residence.
ARE AMERICA'S CIVIL RIGHTS LAWS STILL RELEVANT?
Authors: Skrentny John D. 
Published: January 2008

AbstractThe federal government created America's historic 1964 Civil Rights Act during a period of low immigration. The primary goal was to create equal opportunities for African Americans by ending Jim Crow discrimination in the South. Focusing on the issue of employment discrimination, and specifically employer preferences for immigrants, this article shows how the current period of high immigration from Latin America and Asia has created new challenges and dilemmas for Title VII, the employment discrimination title of the Civil Rights Act. Specifically, sociological evidence indicates that U.S. businesses are engaging in race-conscious employment focused on the perceived value ofracial skills(special abilities of certain racial groups at particular jobs) andracial symbolism(organizational benefits from displaying certain races on the work force). Businesses hire Asians and Latinos, and especially immigrant Asians and Latinos, because of the perceived racial skills of these groups at low-status jobs that require strong work ethics and obedient attitudes. Corporate employers seeking skilled workers do not necessarily prefer immigrants. Instead, they seek minorities for the symbolic value of their diversity, for their general racial skills at bringing new ideas to the workplace, and for their racial marketing skills for growing non-White markets. I assess these developments from a legal perspective, showing that a combination of a lack of litigation and some key court decisions have prevented Title VII from regulating racial skills and racial symbolism and/or from offering protection for immigrants themselves.
RECENT IMMIGRATION AND RACE
Authors: Vickerman Milton 
Published: January 2008

AbstractContemporary immigration is affecting U.S. society in many ways, particularly with respect to racial dynamics. Three aspects of these dynamics stand out: the conceptualization of race, the meaning of assimilation, and racial relations between groups. Although contemporary immigration, being largely non-White, is challenging U.S. society's entrenched conceptualization of race as revolving around a Black/White framework, this framework is not being rapidly overturned. Instead, immigrants are increasing social complexity by both adapting to the Black/White dichotomy and seeking alternatives to it through multiculturalism. The conceptualization ofraceis pivotally important because it determines the shape of assimilation, and, consistent with growing immigration-driven complexity, no one model of assimilation dominates the society. Instead, Anglo-conformity and multiculturalism are competing for preeminence. Blacks, because of U.S. society's failure to completely absorb them, helped to originate multiculturalism, but immigration is strengthening the model's appeal. Blacks and immigrants are adapting to U.S. society by utilizing both Anglo-conformity and multiculturalism. Immigration, increasingly, is also influencing race relations because of its volume and character. Even though Black/White conflict remains unresolved, future race relations will go beyond this nexus to incorporate other groups in complex interactions, revolving around the formation of coalitions and conflict situations as groups pursue particular interests.
WHO FIGHTS
Authors: Wong Cara 
Published: January 2008

AbstractIn discussions of political obligation, it is commonly assumed that duties follow from citizenship. However, the performance of a duty by aliens can lead to citizenship status in at least one critical case: service by noncitizen soldiers. While politicians and pundits recently have called citizenship a just reward for bearing arms and these “green card troops” another example of immigrant entrepreneurship in the United States, there is a good deal of ideological ambivalence about the policy. A clear discussion of its merits is crucial, particularly because in upending the traditionally accepted relationship between obligation and membership in a community, it gives new meaning to citizenship; it also forces a choice between our egalitarian and civic republican values. In this essay, I provide a theoretical framework for evaluating the policy normatively, as well as a political analysis of why—regardless of one's normative stance—the practice of granting citizenship for military service is likely to continue into the future.
A MAY TO REMEMBER
Authors: Ana Otto Santa , Treviño Sandra L. , Bailey Michael J. , Bodossian Kristen , de Necochea Antonio 
Published: January 2008

AbstractWe examine mainstream U.S. print news depictions of the 2006 immigration policy debate. Using critical discourse analysis informed by cognitive metaphor theory, we analyze a substantial sample of mainstream U.S. print news reports in May 2006, at the height of national attention on the “Great May Day” demonstrations across the country. We compare it to a second sample of print news media articles from October 2006, at the time of the passage of the 2006 Secure Fence Act. Mainstream print media represented immigrants with a noteworthy balance between human and nonhuman language during the time of the Great May Day marches. However, the media did not sustain a balanced representation of immigrants in the ensuing months. The conceptual metaphorimmigrant as criminalis predominant during both periods. We explore the implication of the language used to frame the immigration policy debate.
Tracing pumping routes in OH
Authors: Gray Malcolm D. , Howe D. A. , Lewis B. M. 
Published: January 2008

AbstractWe introduce a general method of restoring detailed information about the population flow in molecules under non-local-thermodynamic-equilibrium (NLTE) conditions. This information is usually discarded in numerical algorithms which generate only a solution. We apply the method to tracing the pumping schemes for OH in models that represent three common astrophysical maser environments: the envelopes of asymptotic-giant-branch (AGB) stars, the envelopes of red supergiants, and Galactic star-forming regions. In all three of these cases, we show that a large fraction, typically 0.8 or more, of the maser inversion can be recovered from a set of routes that depend on a much smaller fraction (considerably less than 0.1) of the total number of input coefficients to the model. Therefore, these cases display underlying simplicity in the pumping scheme.
Periodic variations in 6.7-GHz methanol masers
Authors: Goedhart Sharmila , Gaylard Michael J. , van der Walt D. Johan 
Published: January 2008

AbstractAn intensive monitoring program of 54 6.7-GHz methanol maser sources was carried out at the Hartebeesthoek Radio Astronomy Observatory from January 1999 to April 2003. The monitoring program was subsequently continued on 19 sources of interest. Analysis of the resulting time-series stretching over eight years shows that six of the sources are periodic, with periods ranging from 133 days to 504 days. The waveforms in individual sources range from sinusoidal fluctuations to sharp flares and there can be other long term trends in the time-series. The amplitudes of the variations can also change from cycle to cycle. The time-series of the periodic masers will be presented, and possible causes of the variability discussed.
The infrared environments of masers associated with star formation
Authors: De Buizer James 
Published: January 2008

AbstractThe near infrared (1–2μm) and the thermal infrared (3–25μm) trace many of the environments in which masers are thought to reside, including shocks, outflows, accretion disks, and the dense medium near protostars. After a number of recent surveys it has been found that there is a higher detection rate of mid-IR emission towards masers than cm radio continuum emission from UC HII regions, and that the mid-IR emission is actually more closely cospatial to the maser locations. A high percentage of water and methanol masers that are not coincident with the UC HII regions in massive star forming regions are likely to be tracing outflows and extremely young high mass stars before the onset of the UC HII region phase. After a decade of groundwork supporting the hypothesis that linearly distributed class II methanol masers may generally trace accretion disks around young massive stars, compelling evidence is mounting that these masers may generally be associated with outflows instead. Substantiation of this claim comes from recent outflow surveys and high angular resolution mid-IR imaging of the maser environments.
A review of H2CO 6cm masers in the Galaxy
Authors: Araya E. , Hofner P. , Goss W. M. 
Published: January 2008

AbstractWe present a review of the field of formaldehyde (H2CO) 6cm masers in the Galaxy. Previous to our ongoing work, H2CO 6cm masers had been detected in the Galaxy only toward three regions: NGC7538 IRS1, Sgr B2, and G29.96–0.02. Current efforts by our group using the Very Large Array, Arecibo, and the Green Bank Telescope have resulted in the detection of four new H2CO 6cm maser regions. We discuss the characteristics of the known H2CO masers and the association of H2CO 6cm masers with very young regions of massive star formation. We also review the current ideas on the pumping mechanism for H2CO 6cm masers.