Sample records for healthy twin sisters

  1. Cochlear Implants Keep Twin Sisters Learning, Discovering Together

    MedlinePLUS

    ... Johns Hopkins University. Photo: Johns Hopkins University Keep Twin Sisters Learning, Discovering Together Mia and Isabelle Jeppsen, ... broad smiles, and engaging personalities. Like most other twins, they experience practically everything together. Except Mia is ...

  2. Having Twins? How to Stay Healthy

    MedlinePLUS

    ... How to Stay Healthy Ages & Stages Listen Having Twins? How to Stay Healthy Article Body The fact ... the eyes of obstetricians. Many would call a twin pregnancy a high-risk pregnancy , but don’t ...

  3. Social Determinants of Smoking Behavior: The Healthy Twin Study, Korea

    PubMed Central

    Kim, Youn Sik; Ko, Hansoo; Yoon, Changgyo; Lee, Dong-Hun

    2012-01-01

    Objectives The purpose of this study was to identify any influence of socioeconomic status on smoking and smoking cessation in a situation where genetic factors are controlled. Methods The sample for this study was 2502 members of the twins and families cohort who participated in the Korean Healthy Twins Study from 2005 to 2009. Groups of brothers or sisters, including twins and fraternal twins, were compared in terms of smoking and smoking cessation behaviors according to differences in socioeconomic status and gender. Results In a situation with complete control of genetic factors, results showed that the daily smoking amount, cumulative smoking amount, and dependence on nicotine decreased with higher-status occupations, and the rate of smoking and amount of cumulative smoking decreased with higher levels of education. Regarding smoking cessation behavior, a higher level of education was associated with a lower smoking cessation rate, and no significant gender differences were found. Conclusions Environmental factors had a stronger influence on smoking behavior than did genetic factors. Genetic factors had greater influence on smoking cessation than did environmental factors; however, this requires verification in further studies. PMID:22389756

  4. Diet transiently improves migraine in two twin sisters: possible role of ketogenesis?

    PubMed Central

    Di Lorenzo, Cherubino; Currŕ, Antonio; Sirianni, Giulio; Coppola, Gianluca; Bracaglia, Martina; Cardillo, Alessandra; De Nardis, Lorenzo; Pierelli, Francesco

    2013-01-01

    Summary The ketogenic diet is a high-fat, low-carbohydrate diet long used to treat refractory epilepsy; ketogenesis (ketone body formation) is a physiological phenomenon also observed in patients following low-carbohydrate, low-calorie diets prescribed for rapid weight loss. We report the case of a pair of twin sisters, whose high-frequency migraine improved during a ketogenic diet they followed in order to lose weight. The observed time-lock between ketogenesis and migraine improvement provides some insight into how ketones act to improve migraine. PMID:24598400

  5. Childhood obsessive-compulsive traits in anorexia nervosa patients, their unaffected sisters and healthy controls: a retrospective study.

    PubMed

    Degortes, Daniela; Zanetti, Tatiana; Tenconi, Elena; Santonastaso, Paolo; Favaro, Angela

    2014-07-01

    Although there is evidence that childhood perfectionistic traits predate the onset of eating disorders, few studies to date have examined the prevalence and clinical correlates of these traits in patients with anorexia nervosa (AN) and their unaffected sisters. The aim of this work was to study the prevalence of childhood obsessive-compulsive traits in patients with lifetime AN, their unaffected sisters and healthy women. A total of 116 AN patients, 32 healthy sisters and 119 controls were assessed by the EATATE Interview to assess traits such as perfectionism, inflexibility, rule-bound traits, drive for order and symmetry, and excessive doubt and cautiousness. Both self-report and maternal reports were collected. AN patients reported more childhood obsessive-compulsive traits than their healthy sisters and controls. In contrast, no differences between healthy controls and unaffected sisters emerged. In patients with AN, a dose-response relationship was found between the number of childhood obsessive-compulsive traits and psychopathology, including body image distortion, thus indicating that these traits are an important feature to be considered in assessing and treating eating disorders. PMID:24851802

  6. Birth of healthy female twins after preimplantation genetic diagnosis of cystic fibrosis combined with gender determination

    Microsoft Academic Search

    Pierre F. Ray; Nelly Frydman; Tania Attie ´; Samir Hamamah; Violaine Kerbrat; Gerard Tachdjian; Serge Romana; Michel Vekemans; Arnold Munnich

    2002-01-01

    Two healthy sisters with a familial history of mental retardation were referred to our centre for preimplantation genetic diagnosis (PGD). Their two brothers showed severe mental retardation. The molecular basis for their disorder could not be identified, but one of the sisters and the mother presented a highly skewed pattern of X-inactivation reinforcing the likelihood of an X-linked mode of

  7. Testing of the "Healthy 'Little' Lives Project": A Training Program for Big Sister Mentors

    ERIC Educational Resources Information Center

    Kaufman, Michelle R.

    2010-01-01

    Big Brothers/Big Sisters is a national program aimed at providing mentors for disadvantaged children. This study tested whether Big Sister mentors could be trained to increase communication with their Little Sisters about sexual health issues. The study tested an intervention based on social cognitive theory in which a sexual health communication…

  8. First Language Attrition in the Speech of Dutch-English Bilinguals: The Case of Monozygotic Twin Sisters

    ERIC Educational Resources Information Center

    Mayr, Robert; Price, Sacha; Mennen, Ineke

    2012-01-01

    Recent years have seen a proliferation of research on attrition in L1 speech (de Leeuw, Mennen & Scobbie, in press; de Leeuw, Schmid & Mennen, 2010; Dmitrieva, Jongman & Sereno, 2010; Mennen, 2004). Adding to this line of inquiry, the present study investigates the speech of a 62-year-old bilingual monozygotic twin who emigrated to an L2-speaking…

  9. Twins

    NSDL National Science Digital Library

    This collection of Web sites about twins and twin biology starts with a short feature from The Straight Dope (1), which explains the phenomenon of superfecundation. Next is a more extensive piece from Scientific American (2), offering an interesting look at the role genetics may play in the chance of having fraternal twins. The following Web site contains a brief MSNBC story on the recent findings that fraternal, or nonidentical, twins can share the same placenta (3). The Wisconsin Twin Project at the University of Wisconsin-Madison is a long-scale psychological study focused on "the genetic and environmental influences on normal development of twins in the family context." Visitors to the project's Web site (4) will find detailed information about the ongoing research as well as FAQs for general background information. On the topic of twin studies, the next Web site contains a transcript from a recent Health Report story from the Australian Broadcasting Company's Radio National. The transcript is an interview with a researcher working with the Swedish Twin Registry (the largest twin register in the world), an important resource for studying the "relative importance of genetic and environmental influences for behavioral characteristics and diseases (5). The journal Nature offers an interesting article on how the environment in the womb can have profound effects on a child's future health without altering its DNA sequence (6). The following Web site, created by Varun Tankala, offers an excellent introduction to the phenomenon of conjoined twins (7). And with the final Web site, you need not spend another restless night wondering which Star Wars character is your cosmic twin. Not as frivolous as it might seem, this Web site, created by Jeff Potter, contains a well-accepted personality test developed by a University of California-Berkeley psychologist. Users can take the test, find their Star Wars twin, and help advance the field of psychology while you're at it (8).

  10. Sister chromatid exchange (SCE) and high-frequency cells (HFC) in peripheral blood lymphocytes of healthy Tunisian smokers

    Microsoft Academic Search

    Ghada Ben Salah; Hassen Kamoun; Ahmed Rebai; Achraf Ben Youssef; Hajer Ayadi; Neila Belghith-Mahfoudh; Amine Fourati; Hamadi Ayadi; Faiza Fakhfakh

    2011-01-01

    Cigarette smoking is a major public health problem in Tunisia as it concerns up to 30–35% of the adult population, raising important national issues on tobacco-related disease. The aim of this study was to establish whether cigarette smoking increases sister chromatid exchange (SCE) in peripheral blood lymphocytes of smokers (n=14) compared with non-smokers (n=15) in Sfax, Tunisia. The smokers were

  11. Sister Study

    Cancer.gov

    The Sister Study, conducted by the National Institute of Environmental Health Sciences (NIEHS), is prospectively examining environmental and familial risk factors for breast cancer and other outcomes in a cohort of 50,884 sisters of women who have had breast cancer. These sisters have about twice the risk of developing breast cancer due to their family history and are expected to be highly motivated to participate in a long-term study.

  12. SISTER STUDY

    EPA Science Inventory

    The Sister Study will investigate the role of genetic, environmental, and lifestyle factors on the risk of breast cancer and other diseases in sisters of women with breast cancer. This research study will enroll 50,000 women who live in the United States and who are the cancer-fr...

  13. YEAST MEIOSIS Sister kinetochores are mechanically

    E-print Network

    Asbury, Chip

    YEAST MEIOSIS Sister kinetochores are mechanically fused during meiosis I in yeast Krishna K Production of healthy gametes requires a reductional meiosis I division in which replicated sister chromatids comigrate, rather than separate as in mitosis or meiosis II. Fusion of sister kinetochores during meiosis I

  14. Combined Genome-Wide Linkage and Association Analyses of Fasting Glucose Level in Healthy Twins and Families of Korea

    PubMed Central

    Suh, Young Ju; Kim, SungHwan; Kim, So Hun; Park, Jia; Lim, Hyun Ae; Park, Hyun Ju; Choi, Hangseok; Ng, Daniel; Lee, Mi Kyeong

    2013-01-01

    This study was undertaken to identify genetic polymorphisms that are associated with the risk of an elevated fasting glucose (FG) level using genome-wide analyses. We explored a quantitative trait locus (QTL) for FG level in a genome-wide study from a Korean twin-family cohort (the Healthy Twin Study) using a combined linkage and family-based association analysis approach. We investigated 1,754 individuals, which included 432 families and 219 pairs of monozygotic twins. Regions of chromosomes 2q23.3-2q31.1, 15q26.1-15q26.3, 16p12.1, and 20p13-20p12.2, were found to show evidence of linkage with FG level, and several markers in these regions were found to be significantly associated with FG level using family-based or general association tests. In particular, a single-nucleotide polymorphism (rs6138953) on the PTPRA gene in the 20p13 region (combined P = 1.8 × 10-6) was found to be associated with FG level, and the PRKCB1 gene (in 16p12.1) to be possibly associated with FG level. In conclusion, multiple regions of chromosomes 2q23.3-2q31.1, 15q26.1-15q26.3, 16p12.1, and 20p13-20p12.2 are associated with FG level in our Korean twin-family cohort. The combined approach of genome-wide linkage and family-based association analysis is useful to identify novel or known genetic regions concerning FG level in a family cohort study. PMID:23487342

  15. Combined genome-wide linkage and association analyses of fasting glucose level in healthy twins and families of Korea.

    PubMed

    Suh, Young Ju; Kim, Sunghwan; Kim, So Hun; Park, Jia; Lim, Hyun Ae; Park, Hyun Ju; Choi, Hangseok; Ng, Daniel; Lee, Mi Kyeong; Nam, Moonsuk

    2013-03-01

    This study was undertaken to identify genetic polymorphisms that are associated with the risk of an elevated fasting glucose (FG) level using genome-wide analyses. We explored a quantitative trait locus (QTL) for FG level in a genome-wide study from a Korean twin-family cohort (the Healthy Twin Study) using a combined linkage and family-based association analysis approach. We investigated 1,754 individuals, which included 432 families and 219 pairs of monozygotic twins. Regions of chromosomes 2q23.3-2q31.1, 15q26.1-15q26.3, 16p12.1, and 20p13-20p12.2, were found to show evidence of linkage with FG level, and several markers in these regions were found to be significantly associated with FG level using family-based or general association tests. In particular, a single-nucleotide polymorphism (rs6138953) on the PTPRA gene in the 20p13 region (combined P = 1.8 × 10(-6)) was found to be associated with FG level, and the PRKCB1 gene (in 16p12.1) to be possibly associated with FG level. In conclusion, multiple regions of chromosomes 2q23.3-2q31.1, 15q26.1-15q26.3, 16p12.1, and 20p13-20p12.2 are associated with FG level in our Korean twin-family cohort. The combined approach of genome-wide linkage and family-based association analysis is useful to identify novel or known genetic regions concerning FG level in a family cohort study. PMID:23487342

  16. Heritability of head motion during resting state functional MRI in 462 healthy twins.

    PubMed

    Couvy-Duchesne, Baptiste; Blokland, Gabriëlla A M; Hickie, Ian B; Thompson, Paul M; Martin, Nicholas G; de Zubicaray, Greig I; McMahon, Katie L; Wright, Margaret J

    2014-11-15

    Head motion (HM) is a critical confounding factor in functional MRI. Here we investigate whether HM during resting state functional MRI (RS-fMRI) is influenced by genetic factors in a sample of 462 twins (65% female; 101 MZ (monozygotic) and 130 DZ (dizygotic) twin pairs; mean age: 21 (SD = 3.16), range 16-29). Heritability estimates for three HM components-mean translation (MT), maximum translation (MAXT) and mean rotation (MR)-ranged from 37 to 51%. We detected a significant common genetic influence on HM variability, with about two-thirds (genetic correlations range 0.76-1.00) of the variance shared between MR, MT and MAXT. A composite metric (HM-PC1), which aggregated these three, was also moderately heritable (h(2) = 42%). Using a sub-sample (N = 35) of the twins we confirmed that mean and maximum translational and rotational motions were consistent "traits" over repeated scans (r = 0.53-0.59); reliability was even higher for the composite metric (r = 0.66). In addition, phenotypic and cross-trait cross-twin correlations between HM and resting state functional connectivities (RS-FCs) with Brodmann areas (BA) 44 and 45, in which RS-FCs were found to be moderately heritable (BA44: h(2) = 0.23 (sd = 0.041), BA45: h(2) = 0.26 (sd = 0.061)), indicated that HM might not represent a major bias in genetic studies using FCs. Even so, the HM effect on FC was not completely eliminated after regression. HM may be a valuable endophenotype whose relationship with brain disorders remains to be elucidated. PMID:25132021

  17. CEO Sister

    NSDL National Science Digital Library

    Touted as the "nation's Number One destination for Minority Businesswomen," CEO Sister is designed to serve as an online community for businesswomen of color. Highlighted on the site are headlines from both the Washington Post and US News. A menu of resources is located in a blue box on the upper left corner of the site and contains information on higher education, ecommerce, and networking. Interested users may register to receive a lifetime email account with the site as well as access to chats and bulletin boards.

  18. A healthy delivery of twins by assisted reproduction followed by preimplantation genetic screening in a woman with X-linked dominant incontinentia pigmenti.

    PubMed

    Kim, Myung Joo; Lyu, Sang Woo; Seok, Hyun Ha; Park, Ji Eun; Shim, Sung Han; Yoon, Tae Ki

    2014-12-01

    The purpose of this study is to report a successful twin pregnancy and delivery in a female patient with X-linked dominant incontinentia pigmenti (IP) who underwent assisted reproductive technology followed by preimplantation genetic screening (PGS). A 29-year-old female with IP had a previous history of recurrent spontaneous abortion. A molecular analysis revealed the patient had a de novo mutation, 1308_1309insCCCCTTG(p.Ala438ProfsTer26), in the inhibitor of the kappa B kinase gamma gene located in the Xq28 region. IVF/ICSI and PGS was performed, in which male embryos were sexed using array-based comparative genomic hybridization (aCGH). After IVF/ICSI and PGS using aCGH on seven embryos, two euploid male blastocysts were transferred with a 50% probability of a viable male pregnancy. The dizygotic twin pregnancy was confirmed and the amniocentesis results of each twin were normal with regard to the mutation found in the mother. The patient delivered healthy twin babies during the 37th week of gestation. This case shows the beneficial role of PGS in achieving a successful pregnancy through euploid male embryo gender selection in a woman with X-linked dominant IP with a history of multiple male miscarriages. PMID:25599040

  19. A healthy delivery of twins by assisted reproduction followed by preimplantation genetic screening in a woman with X-linked dominant incontinentia pigmenti

    PubMed Central

    Kim, Myung Joo; Lyu, Sang Woo; Seok, Hyun Ha; Park, Ji Eun

    2014-01-01

    The purpose of this study is to report a successful twin pregnancy and delivery in a female patient with X-linked dominant incontinentia pigmenti (IP) who underwent assisted reproductive technology followed by preimplantation genetic screening (PGS). A 29-year-old female with IP had a previous history of recurrent spontaneous abortion. A molecular analysis revealed the patient had a de novo mutation, 1308_1309insCCCCTTG(p.Ala438ProfsTer26), in the inhibitor of the kappa B kinase gamma gene located in the Xq28 region. IVF/ICSI and PGS was performed, in which male embryos were sexed using array-based comparative genomic hybridization (aCGH). After IVF/ICSI and PGS using aCGH on seven embryos, two euploid male blastocysts were transferred with a 50% probability of a viable male pregnancy. The dizygotic twin pregnancy was confirmed and the amniocentesis results of each twin were normal with regard to the mutation found in the mother. The patient delivered healthy twin babies during the 37th week of gestation. This case shows the beneficial role of PGS in achieving a successful pregnancy through euploid male embryo gender selection in a woman with X-linked dominant IP with a history of multiple male miscarriages. PMID:25599040

  20. XO\\/XX Mosaicism in a Pair of Presumably Monozygotic Twins with Different Phenotypes

    Microsoft Academic Search

    Margareta Mikkelsen; A. Frřland; J. Ellebjerg

    1963-01-01

    Blood grouping of a pair of twin sisters rendered it probable that they are monozygotic twins. One was severely mentally retarded and had a number of signs of Turner’s syndrome. This twin later died. Autopsy revealed normal ovaries. The other twin is phenotypically normal. In both twins XO\\/XX sex chromosome mosaicism was demonstrated.Copyright © 1963 S. Karger AG, Basel

  1. One-whole or one-half: A case study of an identical twin's exploration of personal identity through family perceptions

    Microsoft Academic Search

    Jill L. Conlon

    2009-01-01

    \\u000aThe aim of this research was to explore my family's perceptions of identity development of my twin sister and myself. As a researcher, who is an identical twin, I have been fascinated by the perceptions that families have regarding their twins. Another important purpose of this study was to look at the perceptions of my twin sister and myself to

  2. Heritability of Transforming Growth Factor-?1 and Tumor Necrosis Factor-Receptor Type 1 Expression and Vitamin D Levels in Healthy Adolescent Twins.

    PubMed

    Mills, Natalie T; Wright, Margie J; Henders, Anjali K; Eyles, Darryl W; Baune, Bernhard T; McGrath, John J; Byrne, Enda M; Hansell, Narelle K; Birosova, Eva; Scott, James G; Martin, Nicholas G; Montgomery, Grant W; Wray, Naomi R; Vinkhuyzen, Anna A E

    2015-02-01

    Cytokines and vitamin D both have a role in modulating the immune system, and are also potentially useful biomarkers in mental illnesses such as major depressive disorder (MDD) and schizophrenia. Studying the variability of cytokines and vitamin D in a healthy population sample may add to understanding the association between these biomarkers and mental illness. To assess genetic and environmental contributions to variation in circulating levels of cytokines and vitamin D (25-hydroxy vitamin D: 25(OH)D3), we analyzed data from a healthy adolescent twin cohort (mean age 16.2 years; standard deviation 0.25). Plasma cytokine measures were available for 400 individuals (85 MZ, 115 DZ pairs), dried blood spot sample vitamin D measures were available for 378 individuals (70 MZ, 118 DZ pairs). Heritability estimates were moderate but significant for the cytokines transforming growth factor-?1 (TGF-?1), 0.57 (95% CI 0.26-0.80) and tumor necrosis factor-receptor type 1 (TNFR1), 0.50 (95% CI 0.11-0.63) respectively. Measures of 25(OH)D3 were within normal range and heritability was estimated to be high (0.86, 95% CI 0.61-0.94). Assays of other cytokines did not generate meaningful results. These potential biomarkers may be useful in mental illness, with further research warranted in larger sample sizes. They may be particularly important in adolescents with mental illness where diagnostic uncertainty poses a significant clinical challenge. PMID:25466434

  3. Three Sisters, Oregon

    NSDL National Science Digital Library

    This site provides information about Three Sisters, a cluster of closely grouped, glacier-clad volcanoes in the Cascade Range. The site features links to all aspects of the volcano, including its geographic setting, and geologic and eruptive history. Students learn that the Three Sisters appear on Preston's map of Oregon of 1856 and the individual peaks were given the names Mount Faith, Mount Hope, and Mount Charity. Three Sisters is one of three potentially active volcanic centers that lie close to rapidly growing communities. Links labeled Special Items of Interest include information about volcanic highlights and features, and points of interest. Other links lead to maps, graphics, images, publications, reports, and other items of interest involving these volcano and others.

  4. Having Twins

    MedlinePLUS

    What causes a twin pregnancy? Having twins runs in some families. The most important factor, however, is age. Women older than 30 years ... or even more can result. What causes fraternal twins? Usually, a woman releases one egg during ovulation . ...

  5. Three Sisters, Oregon

    NSDL National Science Digital Library

    2001-01-01

    Earlier this month, the US Geological Survey (USGS) released a report stating that USGS scientists have detected a slight uplift of the ground surface over a broad area centered 5 kilometers west of South Sister volcano in the Three Sisters region of the central Oregon Cascade Range. This uplift was detected using a relatively new technique, Satellite Radar Interferometry (InSAR). InSAR uses satellite data to make radar images of the Earth's surface and then compares images from the same location acquired at different times to detect minor (a few centimeters) changes in the ground elevation. This page comes from the USGS Cascades Volcano Observatory Website, and it contains links to the May 8 press release, current hazards report (spring 2001), geologic descriptions of the Three Sisters volcanoes, color interferograms, site photographs, earthquake maps, an overview of InSAR, daily seismicity measurements, and much more. The USGS's Cascade Volcano Observatory has been featured previously in our reports (see the September 23, 1994 Scout Report for Science & Engineering), but the Three Sisters research is particularly timely.

  6. Tough Little German Sister

    Microsoft Academic Search

    Barbara S. Ryden

    2000-01-01

    Caroline Herschel, 1750-1848, was born in Germany and was the sister of Sir William Herschel, discoverer of Uranus and Astronomer Royal to England's King George III. Never married, she was her brother's assistant all her life. She is credited with the discovery of eight comets, the winner of several awards, and respected in her own right as an astronomer.

  7. Twins, placentas, and genetics: Acardiac twinning in a dichorionic, diamniotic, monozygotic twin gestation

    Microsoft Academic Search

    Christopher A French; Frederick R Bieber; David H Bing; David R Genest

    1998-01-01

    We describe a human acardiac twin with associated vascular anastomoses in a dichorionic diamniotic fused twin placenta. A 22-year-old woman delivered a healthy 3,554 g male infant and a fused diamniotic dichorionic twin placenta with a 230g umbilical cord-attached, skin-covered, ovoid mass, consistent with acardiac amorphus. By gross and histological examination, the placental dividing membranes comprised four leaves, one amnion

  8. Sister Chromatid Cohesion

    PubMed Central

    Peters, Jan-Michael; Nishiyama, Tomoko

    2012-01-01

    During S phase, not only does DNA have to be replicated, but also newly synthesized DNA molecules have to be connected with each other. This sister chromatid cohesion is essential for the biorientation of chromosomes on the mitotic or meiotic spindle, and is thus an essential prerequisite for chromosome segregation. Cohesion is mediated by cohesin complexes that are thought to embrace sister chromatids as large rings. Cohesin binds to DNA dynamically before DNA replication and is converted into a stably DNA-bound form during replication. This conversion requires acetylation of cohesin, which in vertebrates leads to recruitment of sororin. Sororin antagonizes Wapl, a protein that is able to release cohesin from DNA, presumably by opening the cohesin ring. Inhibition of Wapl by sororin therefore “locks” cohesin rings on DNA and allows them to maintain cohesion for long periods of time in mammalian oocytes, possibly for months or even years. PMID:23043155

  9. Brothers and Sisters

    Microsoft Academic Search

    Mary Renck Jalongo; Denise Dragich

    Influences in contemporary society such as blended families created by remarriage, international adoptions, and reproductive\\u000a technology have expanded the definition of sibling relationships. Bonds with brothers and sisters occur early and exert a\\u000a profound effect on young children’s overall development. This chapter synthesizes the research on sibling relationships in\\u000a early childhood, identifies four recurring themes, and offers research-based recommendations to

  10. Sister kinetochores are mechanically fused during meiosis I in yeast.

    PubMed

    Sarangapani, Krishna K; Duro, Eris; Deng, Yi; Alves, Flavia de Lima; Ye, Qiaozhen; Opoku, Kwaku N; Ceto, Steven; Rappsilber, Juri; Corbett, Kevin D; Biggins, Sue; Marston, Adčle L; Asbury, Charles L

    2014-10-10

    Production of healthy gametes requires a reductional meiosis I division in which replicated sister chromatids comigrate, rather than separate as in mitosis or meiosis II. Fusion of sister kinetochores during meiosis I may underlie sister chromatid comigration in diverse organisms, but direct evidence for such fusion has been lacking. We used laser trapping and quantitative fluorescence microscopy to study native kinetochore particles isolated from yeast. Meiosis I kinetochores formed stronger attachments and carried more microtubule-binding elements than kinetochores isolated from cells in mitosis or meiosis II. The meiosis I-specific monopolin complex was both necessary and sufficient to drive these modifications. Thus, kinetochore fusion directs sister chromatid comigration, a conserved feature of meiosis that is fundamental to Mendelian inheritance. PMID:25213378

  11. Sister kinetochores are mechanically fused during meiosis I in yeast

    PubMed Central

    Sarangapani, Krishna K.; Duro, Eris; Deng, Yi; Alves, Flavia de Lima; Ye, Qiaozhen; Opoku, Kwaku N.; Ceto, Steven; Rappsilber, Juri; Corbett, Kevin D.; Biggins, Sue; Marston, Adčle L.; Asbury, Charles L.

    2014-01-01

    Production of healthy gametes requires a reductional meiosis I division in which replicated sister chromatids co-migrate, rather than separating as in mitosis or meiosis II. Fusion of sister kinetochores during meiosis I may underlie sister chromatid co-migration in diverse organisms, but direct evidence for such fusion has been lacking. Here we studied native kinetochore particles isolated from yeast using laser trapping and quantitative fluorescence microscopy. Meiosis I kinetochores formed stronger attachments and carried more microtubule-binding elements than kinetochores isolated from cells in mitosis or meiosis II. The meiosis I-specific monopolin complex was both necessary and sufficient to drive these modifications. Thus, kinetochore fusion directs sister chromatid co-migration, a conserved feature of meiosis that is fundamental to Mendelian inheritance. PMID:25213378

  12. The sisters of mindfulness.

    PubMed

    Rosenzweig, Debra

    2013-08-01

    This article introduces the issue of Journal of Clinical Psychology: In Session entitled "Beyond Meditation: Mindfulness-Related Clinical Practices." In the article, I describe how the "sisters of mindfulness"-forgiveness, gratitude, loving-kindness, compassion, acceptance, and best-self visualization-are each interconnected and important forms of mindfulness as well as tenets of Buddhist psychology. Each of these practices reflect mental strengths that are being integrated into the brain's neuroplastic development as a function of modern day psychotherapy. PMID:23775372

  13. Deformation twinning

    Microsoft Academic Search

    J. W. Christian; S. Mahajan

    1995-01-01

    The concepts of twinning shears and twinning modes are introduced. The early attempts to predict these features are presented. This is followed by a detailed discussion of the formal theories of Bilby and Crocker and Bevis and Crocker for predicting these elements. Their formalisms are applied to predict twinning modes in single lattice structures, superlattices, hexagonal close packed structure and

  14. Sister-sister incest: data from an anonymous computerized survey.

    PubMed

    Stroebel, Sandra S; O'Keefe, Stephen L; Griffee, Karen; Kuo, Shih-Ya; Beard, Keith W; Kommor, Martin J

    2013-01-01

    Retrospective data were entered anonymously by 1,521 adult women using a computer-assisted self-interview. Thirty-one participants were victims of sister-sister incest, 40 were victims of brother-sister incest, 19 were victims of father-daughter incest, 8 were victims of sexual abuse by an adult female (including one mother), and 232 were victims of sexual abuse by an adult male other than their father before reaching 18 years of age. The rest (1,203) served as controls. The victims of sister-sister incest had significantly more problematic outcomes than controls on many measures as adults. Victims of sister-sister incest were more depressed and more likely than controls to be distant from the perpetrator-sister and to have traded sex for money, experienced an unplanned pregnancy, engaged in four different types of masturbation, and engaged in 13 different same-sex behaviors. Our findings were consistent with other reports of early eroticization and persistent hypereroticization of incest victims. PMID:23924178

  15. Nonlinear Analyses of Heart Rate Variability in Monochorionic and Dichorionic Twin Fetuses

    Microsoft Academic Search

    Masahiro Shiba; Akihiko Kikuchi; Tiejun Miao; Kikue Hara; Sorahiro Sunagawa; Shiro Yoshida; Kimiyo Takagi; Nobuya Unno

    2008-01-01

    Aims: To examine whether the heart rate dynamics of a monochorionic diamniotic (MD) twin fetus is different from a dichorionic diamniotic (DD) twin fetus by nonlinear methods of time series analysis. Methods: 32 fetal heart rate (FHR) recordings from healthy MD twin fetuses and 58 recordings from healthy DD twin fetuses were used. Nonlinear analyses included attractor reconstruction, calculation of

  16. Sister Cities International

    NSDL National Science Digital Library

    People from around the world have sought to establish links with other individuals from different nations, and since 1956, cities have sought to also establish meaningful relationships with other urban areas through the Sister Cities International organization. Currently, the organization represents more than 2,500 communities in 126 countries. Visitors to the site can learn which cities are currently seeking partnerships with other cities, read about the organization's annual conference, and also read about the programs they administer. Also, its calendar of events is quite full with programs designed for the general public, such as those dealing with relationships with countries in the Middle East and the question of local government. Finally, the material on the site is available in a number of different languages, including French, German, Spanish, and Japanese.

  17. NK cells from an AML patient have recovered in remission and reached comparable cytolytic activity to that of a healthy monozygotic twin mediated by the single-chain triplebody SPM-2

    PubMed Central

    2013-01-01

    Background The capacity of patient’s Natural Killer cells (NKs) to be activated for cytolysis is an important prerequisite for the success of antibody-derived agents such as single-chain triplebodies (triplebodies) in cancer therapy. NKs recovered from AML patients at diagnosis are often found to be reduced in peripheral blood titers and cytolytic activity. Here, we had the unique opportunity to compare blood titers and cytolytic function of NKs from an AML patient with those of a healthy monozygotic twin. The sibling’s NKs were compared with the patient’s drawn either at diagnosis or in remission after chemotherapy. The cytolytic activities of NKs from these different sources for the patient’s autologous AML blasts and other leukemic target cells in conjunction with triplebody SPM-2, targeting the surface antigens CD33 and CD123 on the AML cells, were compared. Methods Patient NKs drawn at diagnosis were compared to NKs drawn in remission after chemotherapy and a sibling’s NKs, all prepared from PBMCs by immunomagnetic beads (MACS). Redirected lysis (RDL) assays using SPM-2 and antibody-dependent cellular cytotoxicity (ADCC) assays using the therapeutic antibody RituximabTM were performed with the enriched NKs. In addition, MACS-sorted NKs were analyzed for NK cell activating receptors (NCRs) by flow cytometry, and the release of TNF-alpha and IFN-gamma from blood samples of both siblings after the addition of the triplebody were measured in ELISA-assays. Results Patient NKs isolated from peripheral blood drawn in remission produced comparable lysis as NKs from the healthy twin against the patient’s autologous bone marrow (BM) blasts, mediated by SPM-2. The NCR receptor expression profiles on NKs from patient and twin were similar, but NK cell titers in peripheral blood were lower for samples drawn at diagnosis than in remission. Conclusions Peripheral blood NK titers and ex vivo cytolytic activities mediated by triplebody SPM-2 were comparable for cells drawn from an AML patient in remission and a healthy twin. If these results can be generalized, then NKs from AML patients in remission are sufficient in numbers and cytolytic activity to make triplebodies promising new agents for the treatment of AML. PMID:24237598

  18. Twin-to-twin transfusion syndrome

    MedlinePLUS

    Twin-to-twin transfusion syndrome (TTTS) is a rare condition that occurs only in identical twins while they are in the womb. ... TTTS occurs when the blood supply of one twin moves to the other the shared placenta. The ...

  19. Where are Sedna's Sisters?

    NASA Astrophysics Data System (ADS)

    Bartlett, D. F.

    2005-05-01

    Simulations of the formation of the Oort cloud from the Kuiper Belt typically are presented as an animated scatter diagram. Here the orbit of each object appears as a point of perihelion distance q and semi-major axis a. (eg. Levison, Morbidelli, & Dones 2004). These plots show a conspicuous void, bounded by the inequalities: q < a, q > 50 AU, and a < 5000-10000 AU. Brown (2005) calls this void the ``Bermuda Triangle". The only present occupant is Sedna (q=76 AU, a=501 AU). Brown, Trujillo, & Rabinowitz , the discovers of Sedna, have challenged others to explain how Sedna got inside the triangle and to predict where similar objects might be found. Sedna could not have simply formed in its current orbit by the accumulation of smaller objects (Stern 2005). Several authors have suggested that a passing star scattered Sedna into the triangle shortly after the birth of the solar system. Here I offer an alternative which uses the very strong galactic tidal forces of the Sinusoidal potential (Bartlett 2001, 2004). In this potential, the numerator of Newton's law is replaced by GM cos(ko r) where ko = 2 ? / lambdao and the 'wavelength' ? o is 425 pc. The 20 radial oscillations between the sun and the center of the Galaxy give tidal forces that are 120 times as big as generally expected. I will show how this tidal force, acting over the lifetime of the solar system, could move the perihelion of Sedna from about 40 to 76 AU. Sedna's sisters are likely to have still larger q & a and to have perihelia in two specific quadrants of the ecliptic plane.

  20. Tangier disease phenotype diversity in dizygous twin sisters

    Microsoft Academic Search

    P. Pichit; M. Quillard; P. Couvert; J. Sénant; A. Carrié; R. Bittar; D. Hannequin; L. Guyant-Maréchal

    2010-01-01

    IntroductionTangier disease (TD) is a rare autosomal recessive disorder characterized by a deficiency or absence of high-density lipoprotein (HDL) caused by mutations in the adenotriphosphate-binding cassette transporter-1 gene (ABCA1). Mutations of ABCA1 lead to a defect in cellular cholesterol removal and to deposition of cholesterol esters throughout the body.

  1. Hypertrophic cardiomyopathy with shared morphology in identical twins: a case report.

    PubMed

    Wylie, L; Ramage, A; MacLeod, D C

    2002-06-01

    We report the case of identical twin sisters, both with hypertrophic cardiomyopathy, and both found to have similar echocardiographic appearances in the form of asymmetric septal hypertrophy. This is unusual, in that published reports commonly describe the heterogeneous expression of this condition in twins. PMID:12193007

  2. Sister chromatid exchanges in barley

    Microsoft Academic Search

    I. Schubert; G. Künzel; H. Bretschneider; R. Rieger; H. Nicoloff

    1980-01-01

    A mean frequency of 20.6 sister chromatid exchanges (SCEs) per cell has been observed in a reconstructed karyotype of Hordeum vulgare by application of the FPG technique after unifilar incorporation of BrdU into chromosomes. The involvement in SCEs of the 48 segments into which the chromosome set had been subdivided was, with a single deviation, length proportional and independent of

  3. Preparing for Twins

    MedlinePLUS

    ... Preparing for Twins Ages & Stages Listen Preparing for Twins Article Body We just found out we're having twins! What do we do now? Having twins (or ... plays with a sibling or friend. Development of Twins You may find that your twins do not ...

  4. Sister chromatid cohesion and recombination in meiosis

    Microsoft Academic Search

    Diana van Heemst; Christa Heyting

    2000-01-01

    .   Sister chromatids are associated from their formation until their disjunction. Cohesion between sister chromatids is provided\\u000a by protein complexes, of which some components are conserved across the kingdoms and between the mitotic and meiotic cell\\u000a cycles. Sister chromatid cohesion is intimately linked to other aspects of chromosome behaviour and metabolism, in particular\\u000a chromosome condensation, recombination and segregation. Recombination, sister

  5. Reticular erythematous mucinosis--(REM syndrome) in twins.

    PubMed

    Fühler, Maren; Ottmann, Karl; Tronnier, Michael

    2009-11-01

    We present female twins with reticular erythematous mucinosis (REM syndrome). Remarkably, the lesions developed in both sisters almost at the same time in the same locations after UV exposure. Reports of familial manifestations of REM syndrome are very rare and an association to a distinct HLA constellation has not been proven. Our report clearly suggests a genetic predisposition. PMID:19650821

  6. A monozygotic twin pair with highly discordant Gaucher phenotypes

    PubMed Central

    Biegstraaten, M.; van Schaik, I.N.; Aerts, J.M.F.G.; Langeveld, M.; Mannens, M.M.A.M.; Bour, L.J.; Sidransky, E.; Tayebi, N.; Fitzgibbon, E.; Hollak, C.E.M.

    2012-01-01

    We describe monozygotic twin sisters, born to consanguineous Moroccan parents, who are highly discordant for the manifestations of Gaucher disease. Both carry Gaucher genotype N188S/N188S. One has severe visceral involvement, epilepsy, and a cerebellar syndrome. Her twin does not manifest any symptoms or signs of Gaucher disease but suffers from type 1 diabetes mellitus. The concurrence of a mild Gaucher mutation with a severe phenotype, as well as the occurrence of highly discordant phenotypes in a pair of monozygotic twins, is discussed. PMID:21056933

  7. Twin-to-twin transfusion syndrome

    MedlinePLUS Videos and Cool Tools

    Twin to Twin Transfusion Syndrome, or TTTS, is a disease of the placenta. This condition affects twins or other multiples that share a single placenta containing blood vessels going from one baby to the other. Blood from the smaller "donor" twin is transferred to the larger " ...

  8. NOVA Online: Titanic's Lost Sister

    NSDL National Science Digital Library

    Companion site to an original broadcast on January 28, 1997. When Titanic sank, construction on her sister ship, Britannic, was interrupted so she could be overhauled with new regulations. Britannic sank in 1916 in less than an hour. Includes interview with Robert Ballard, who found the sunken Titanic, an interactive search, and salvage activity. Others resources available: written transcript, teacher's guide, students activities, and links to additional resources.

  9. Brothers, Sisters and Aging Parents

    E-print Network

    Isbell, Lou

    1999-09-02

    decision maker. If you and your siblings are still relating to each other as you did when you were children, your ways of relating may need to be reevaluated. Distorted perceptions form less effective relation- ships. Finding answers to the following... into adulthood. Where sibling rivalry has been domi- nant, a person may become obsessed with compar- ing achievements or failures throughout life with the rivaled brother or sister. Sibling solidarity, a sense of cohesiveness and emotional closeness with brothers...

  10. Twin supergravities

    NASA Astrophysics Data System (ADS)

    Roest, Diederik; Samtleben, Henning

    2009-08-01

    We study the phenomenon that pairs of supergravities can have identical bosonic field content but different fermionic extensions. Such twin theories are classified and shown to originate as truncations of a common theory with more supersymmetry. Moreover, we discuss the possible gaugings and scalar potentials of twin theories. This allows us to pinpoint to which extent these structures are determined by the purely bosonic structure of the underlying Kac-Moody algebras and where supersymmetry comes to play its role. As an example, we analyse the gaugings of the six-dimensional {\\cal N}=(0,1) and {\\cal N}=(2,1) theories with an identical bosonic sector and explicitly work out their scalar potentials. The discrepancy between the potentials finds a natural explanation within maximal supergravity, in which both theories may be embedded.

  11. Twin Supergravities

    E-print Network

    Diederik Roest; Henning Samtleben

    2009-07-13

    We study the phenomenon that pairs of supergravities can have identical bosonic field content but different fermionic extensions. Such twin theories are classified and shown to originate as truncations of a common theory with more supersymmetry. Moreover, we discuss the possible gaugings and scalar potentials of twin theories. This allows to pinpoint to which extent these structures are determined by the purely bosonic structure of the underlying Kac-Moody algebras and where supersymmetry comes to plays its role. As an example, we analyze the gaugings of the six-dimensional N=(0,1) and N=(2,1) theories with identical bosonic sector and explicitly work out their scalar potentials. The discrepancy between the potentials finds a natural explanation within maximal supergravity, in which both theories may be embedded.

  12. 276 Twin Research and Human Genetics Volume 12 Number 3 pp. 276285 Objective: As post-pregnancy weight retention in

    E-print Network

    Nyholt, Dale R.

    276 Twin Research and Human Genetics Volume 12 Number 3 pp. 276­285 Objective: As post in magnitude of genetic and environmental variation in BMI due to parity in an Australian female sample, comprising 11,915 female twins and their sisters. Results: Total variance of BMI increased with parity

  13. QUANTITATIVE GENETIC MODELING OF LATERAL VENTRICULAR SHAPE AND VOLUME USING MULTI-ATLAS FLUID IMAGE ALIGNMENT IN TWINS

    E-print Network

    Thompson, Paul

    of MRI scans from healthy individuals with known genetic resemblance (e.g., twins). Genetic models can, large imaging databases must be collected from genetically well- characterized populations, e.g. twins matter volume is heritable and correlates with IQ [1]. In healthy elderly male twins [2,3], genetic

  14. Twin SUSY

    E-print Network

    Adam Falkowski; Stefan Pokorski; Martin Schmaltz

    2006-04-22

    We construct an extension of the MSSM in which superpartners can naturally be heavier than the electroweak scale. This ``little hierarchy'' of scales is stable because the Higgs arises as a pseudo-Nambu-Goldstone boson in the breaking of an accidental SU(4) symmetry of the Higgs sector. Supersymmetry and the global symmetry combine to forbid logarithmically divergent one-loop contributions to the Higgs mass. The accidental symmetry follows from a simple ``twin'' parity which exchanges the SU(2) sectors in the SU(3)_C x SU(2)_L x SU(2)_R x U(1)_X gauge group.

  15. Monozygotic twins discordant for constitutive BRCA1 promoter methylation, childhood cancer and secondary cancer.

    PubMed

    Galetzka, Danuta; Hansmann, Tamara; El Hajj, Nady; Weis, Eva; Irmscher, Benjamin; Ludwig, Marco; Schneider-Rätzke, Brigitte; Kohlschmidt, Nicolai; Beyer, Vera; Bartsch, Oliver; Zechner, Ulrich; Spix, Claudia; Haaf, Thomas

    2012-01-01

    We describe monozygotic twins discordant for childhood leukemia and secondary thyroid carcinoma. We used bisulfite pyrosequencing to compare the constitutive promoter methylation of BRCA1 and several other tumor suppressor genes in primary fibroblasts. The affected twin displayed an increased BRCA1 methylation (12%), compared with her sister (3%). Subsequent bisulfite plasmid sequencing demonstrated that 13% (6 of 47) BRCA1 alleles were fully methylated in the affected twin, whereas her sister displayed only single CpG errors without functional implications. This between-twin methylation difference was also found in irradiated fibroblasts and untreated saliva cells. The BRCA1 epimutation may have originated by an early somatic event in the affected twin: approximately 25% of her body cells derived from different embryonic cell lineages carry one epigenetically inactivated BRCA1 allele. This epimutation was associated with reduced basal protein levels and a higher induction of BRCA1 after DNA damage. In addition, we performed a genome-wide microarray analysis of both sisters and found several copy number variations, i.e., heterozygous deletion and reduced expression of the RSPO3 gene in the affected twin. This monozygotic twin pair represents an impressive example of epigenetic somatic mosaicism, suggesting a role for constitutive epimutations, maybe along with de novo genetic alterations in recurrent tumor development. PMID:22207351

  16. The sister bonding of duplicated chromosomes.

    PubMed

    Zou, Hui

    2011-08-01

    Sister chromatid cohesion and separation are two fundamental chromosome dynamics that are essential to equal chromosome segregation during cell proliferation. In this review, I will discuss the major steps that regulate these dynamics during mitosis, with an emphasis on vertebrate cells. The implications of these machineries outside of sister chromatid cohesion and separation are also discussed. PMID:21497666

  17. The sister bonding of duplicated chromosomes

    PubMed Central

    Zou, Hui

    2011-01-01

    Sister chromatid cohesion and separation are two fundamental chromosome dynamics that are essential to equal chromosome segregation during cell proliferation. In this review, I will discuss the major steps that regulate these dynamics during mitosis, with an emphasis on vertebrate cells. The implications of these machineries outside of sister chromatid cohesion and separation are also discussed. PMID:21497666

  18. Brahmakumari Sister Shivani Rajyoga Meditation Teacher

    E-print Network

    Srivastava, Kumar Vaibhav

    Brahmakumari Sister Shivani Rajyoga Meditation Teacher Brahmakumari Sister Shivani is a Rajyoga Meditation Teacher who has been studying spiritual knowledge and practicing the ancient technique of Rajyoga Meditation, as taught by the Prajapita Brahma Kumaris Ishwariya Vishwa Vidyalaya, Mount Abu, for the past 12

  19. Sources of variation in cerebellar activation during cognition: A twin fMRI study

    E-print Network

    Thompson, Paul

    Sources of variation in cerebellar activation during cognition: A twin fMRI study Background, in addition to investigating associations with demographic and cognitive measures. Based on twin studies scanner in a sample of healthy twins and siblings. Fig. 1: N-Back task The final sample, with adequate

  20. Twin children's language development

    Microsoft Academic Search

    Karen Thorpe

    2006-01-01

    Scientific studies have consistently reported that, in group analyses, twin children have higher rates of language delay when compared with single-born children. This paper reviews the evidence on twin language by addressing five key questions:1.What is the extent of language delay in twin children?2.What are the causes of language delay in twin children?3.Do twin children have a separate, private or

  1. Staging of Twin-Twin Transfusion Syndrome

    Microsoft Academic Search

    Rubén A Quintero; Walter J Morales; Mary H Allen; Patricia W Bornick; Patricia K Johnson; Michael Kruger

    1999-01-01

    OBJECTIVE:The purpose of this study was to evaluate the prognostic value of sonographic and clinical parameters to develop a staging classification of twin-twin transfusion syndrome (TTTS).STUDY DESIGN:Severe TTTS was defined as the presence of polyhydramnios (maximum vertical pocket of ?8 cm) and oligohydramnios (maximum vertical pocket of ?2 cm). Nonvisualization of the bladder in the donor twin (?BDT) and absence

  2. Wernicke-Korsakoff syndrome in monozygotic twins: a biochemical peculiarity.

    PubMed

    Leigh, D; McBurney, A; McIlwain, H

    1981-08-01

    A pair of monozygotic twins, one suffering from the Wernicke-Korsakoff syndrome, verified at autopsy, and the other healthy, was studied biochemically. The erythrocyte transketolase of each twin showed abnormalities, though these differed in the two individuals. In the healthy twin, the basal transketolase was low, but responded normally to thiamine pyrophosphate (TPP) added in vitro. In the twin with the Wernicke-Korsakoff syndrome the basal level of the enzyme and its response in vitro were normal, but a period of treatment with thiamine tetrahydrofurfuryldisulphide, led to loss of the in vitro response. It is suggested that, initially, an inborn error of metabolism may have been common to both twins. PMID:7197998

  3. Twins, Triplets, and Other Multiples

    MedlinePLUS

    ... what? Pregnancy This information in Spanish ( en espańol ) Twins, triplets, and other multiples How twins are formed ... can increase the likelihood of multiple births. How twins are formed Twins form in one of two ...

  4. Multiples: Twins, Triplets and Beyond

    MedlinePLUS

    ... page It's been added to your dashboard . Multiples: twins, triplets and beyond When a woman is carrying ... What is the difference between identical and fraternal twins? Identical twins (also called monozygotic twins) occur when ...

  5. Goddard Welcomes SISTER - Duration: 90 seconds.

    NASA Video Gallery

    The Goddard Space Flight Center in Greenbelt, Md., hosted a weeklong summer institute, SISTER, for the purpose of increasing the awareness of and providing opportunities for middle school girls to ...

  6. All in the Family: The Sister Study

    MedlinePLUS

    Skip Navigation Bar Home Current Issue Past Issues All in the Family: The Sister Study Past Issues / ... that may ultimately eliminate this dreaded disease. We all know that breast cancer does not discriminate. Whether ...

  7. Eruptive history of South Sister, Oregon Cascades

    USGS Publications Warehouse

    Fierstein, J.; Hildreth, W.; Calvert, A.T.

    2011-01-01

    South Sister is southernmost and highest of the Three Sisters, three geologically dissimilar stratovolcanoes that together form a spectacular 20km reach along the Cascade crest in Oregon. North Sister is a monotonously mafic edifice as old as middle Pleistocene, Middle Sister a basalt-andesite-dacite cone built between 48 and 14ka, and South Sister is a basalt-free edifice that alternated rhyolitic and intermediate modes from 50ka to 2ka (largely contemporaneous with Middle Sister). Detailed mapping, 330 chemical analyses, and 42 radioisotopic ages show that the oldest exposed South Sister lavas were initially rhyolitic ~50ka. By ~37ka, rhyolitic lava flows and domes (72-74% SiO2) began alternating with radially emplaced dacite (63-68% SiO2) and andesite (59-63% SiO2) lava flows. Construction of a broad cone of silicic andesite-dacite (61-64% SiO2) culminated ~30ka in a dominantly explosive sequence that began with crater-forming andesitic eruptions that left fragmental deposits at least 200m thick. This was followed at ~27ka by growth of a steeply dipping summit cone of agglutinate-dominated andesite (56-60.5% SiO2) and formation of a summit crater ~800m wide. This crater was soon filled and overtopped by a thick dacite lava flow and then by >150m of dacitic pyroclastic ejecta. Small-volume dacite lavas (63-67% SiO2) locally cap the pyroclastic pile. A final sheet of mafic agglutinate (54-56% SiO2) - the most mafic product of South Sister - erupted from and drapes the small (300-m-wide) present-day summit crater, ending a summit-building sequence that lasted until ~22ka. A 20kyr-long-hiatus was broken by rhyolite eruptions that produced (1) the Rock Mesa coulee, tephra, and satellite domelets (73.5% SiO2) and (2) the Devils Chain of ~20 domes and short coulees (72.3-72.8% SiO2) from N-S vent alignments on South Sister's flanks. The compositional reversal from mafic summit agglutinate to recent rhyolites epitomizes the frequently changing compositional modes of the South Sister locus throughout its lifetime. South Sister is part of a reach of the Cascades unusually active in the last 50kyr, characterized by high vent density, N-S vent alignments, and numerous eruptive units of true rhyolite (? 72% SiO2) that distinguishes it from much of the Quaternary Cascade arc; these are eruptive expressions of the complex confluence of arc and intraplate magmatic-tectonic regimes.

  8. The Amoeba Sisters YouTube Videos

    NSDL National Science Digital Library

    The Amoeba Sisters

    2014-04-04

    The Amoeba Sisters strive to facilitate curiosity and engagement by making biology both humorous and meaningful. The videos use real world examples and silly cartoons to demystify difficult biology concepts, such as cell anatomy, homeostasis, enzymes, and biomolecules. A new video is released weekly. The creators are sisters who both work in education. One is a high school biology teacher who found these videos made biology more approachable and easier to comprehend.

  9. RESEARCH ARTICLE Persistent mechanical linkage between sister chromatids

    E-print Network

    sister rDNA arrays appear separated in metaphase, mechanical linkages between sister arm loci persist distinct, sister chromatid arms are mechanically linked in metaphase. Using microneedles to physically pull telomeres last. Thus, mechanical linkage between sister chromatid arms persists until after anaphase onset

  10. Healthy Water, Healthy People.

    ERIC Educational Resources Information Center

    Etgen, John

    2002-01-01

    Describes a hands-on activity, Hitting the Mark, which is found in the "Healthy Water, Healthy People Water Quality Educators Guide" in terms of its objectives, materials, background, procedures, activities, and assessment. (KHR)

  11. Twin Prime Sieve

    E-print Network

    H. J. Weber

    2012-12-02

    A sieve is constructed for ordinary twin primes of the form 6m+/-1 that are characterized by their twin rank m. It has no parity problem. Non-rank numbers are identified and counted using odd primes p>=5. Twin- and non-ranks make up the set of positive integers. Regularities of non-ranks allow gathering information on them to obtain a Legendre-type formula for the number of twin-ranks near primorial arguments.

  12. Genetics and Twins

    Microsoft Academic Search

    Cindy M. Little

    2011-01-01

    The phenomenon of twinning has fascinated scientists and others over the centuries. A twin pregnancy has a higher risk of fetal morbidity and mortality than a singleton pregnancy depending on the zygosity and chorionicity of the fetuses. Dizygotic twins originate from two separate ova that are fertilized by two different sperm and are no more alike than any two siblings,

  13. Deformation twins in Hornblende

    USGS Publications Warehouse

    Rooney, T.P.; Riecker, R.E.; Ross, M.

    1970-01-01

    Hornblende deformation twins with twin planes parallel to (101) are produced experimentally in single crystals by compression parallel to the c axis. Twinning occurs at confining pressures from 5 to 15 kilobars and temperatures from 400?? to 600??C (strain rate, 10-5 per second).

  14. Vocational Rehabilitation Services for Blind Persons: The Experience of Sibling Twins.

    ERIC Educational Resources Information Center

    Hale, L.; And Others

    1991-01-01

    This study reports the very different reactions and choices of legally blind twin sisters who were provided services through the Mississippi Vocational Rehabilitation for the Blind agency. Emphasis is on the importance of individual differences and variables, such as personality, over which the rehabilitation agency has no control. (DB)

  15. Familial Twinning and Fertility in Dutch Mothers of Twins

    PubMed Central

    Hoekstra, Chantal; Willemsen, Gonneke; van Beijsterveldt, Toos C.E.M.; Montgomery, Grant W.; Boomsma, Dorret I.

    2010-01-01

    We studied twinning and fertility indices in mothers with spontaneous monozygotic (MZ) and dizygotic (DZ) twins and in mothers who conceived their twins after the use of assisted reproduction techniques (ART). Participants in this study consisted of 8,222 and 5,505 women with spontaneous DZ and MZ offspring and 4,164 and 250 women with ART DZ and MZ twin pairs, respectively. Women were compared with respect to the number of sibs and offspring, the presence of other relatives with twins and the time it took to conceive the twins. We also compared familial twinning between a younger and an older age group. Women with spontaneous DZ twins more often reported female relatives with twins than those with spontaneous MZ twins. The proportion of DZ versus MZ twin offspring in relatives was also larger in women with spontaneous DZ offspring than in women with MZ offspring. The first group of women reported a shorter time to conceive. Women with ART twins had fewer sibs and offspring and less often reported relatives with twins. We did not observe that DZ twinning was more familial in women who had their twins before age 36 years compared to older women. Familial DZ twinning is clearly present in mothers of spontaneous DZ twins. The mechanisms underlying spontaneous and non-spontaneous DZ twinning are different and fertility treatment should be taken into account in any study of twinning. Twinning is not more familial in women who have their twins at a younger age. PMID:19012341

  16. 623Twin Research and Human Genetics Volume 9 Number 5 pp. 623631 Long-term memory (LTM) problems are associated

    E-print Network

    McDermott, Kathleen

    623Twin Research and Human Genetics Volume 9 Number 5 pp. 623­631 Long-term memory (LTM) problems (Caselli et al., 2004). Twin studies have consistently demonstrated a low to moderate influence of genetic is unknown. We studied LTM in 95 healthy female twin pairs identified through birth records in the state

  17. Sister chromatid segregation in meiosis II

    PubMed Central

    Wassmann, Katja

    2013-01-01

    Meiotic divisions (meiosis I and II) are specialized cell divisions to generate haploid gametes. The first meiotic division with the separation of chromosomes is named reductional division. The second division, which takes place immediately after meiosis I without intervening S-phase, is equational, with the separation of sister chromatids, similar to mitosis. This meiotic segregation pattern requires the two-step removal of the cohesin complex holding sister chromatids together: cohesin is removed from chromosome arms that have been subjected to homologous recombination in meiosis I and from the centromere region in meiosis II. Cohesin in the centromere region is protected from removal in meiosis I, but this protection has to be removed—deprotected”—for sister chromatid segregation in meiosis II. Whereas the mechanisms of cohesin protection are quite well understood, the mechanisms of deprotection have been largely unknown until recently. In this review I summarize our current knowledge on cohesin deprotection. PMID:23574717

  18. 147. TWIN FALLS MAIN CANAL DIVERSION, TWIN FALLS COUNTY, MILNER, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    147. TWIN FALLS MAIN CANAL DIVERSION, TWIN FALLS COUNTY, MILNER, IDAHO; VIEW OF MAIN HEADGATES, EAST VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  19. 137. TWIN FALLS SOUTH SIDE MAIN CANAL DIVERSION HEADGATES, TWIN ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    137. TWIN FALLS SOUTH SIDE MAIN CANAL DIVERSION HEADGATES, TWIN FALLS COUNTY, MILNER, IDAHO; OVERALL VIEW OF MAIN HEADGATES, DAM IN BACKGROUND. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  20. 99. POINT SPILL, TWIN FALLS MAIN CANAL, TWIN FALLS COUNTY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    99. POINT SPILL, TWIN FALLS MAIN CANAL, TWIN FALLS COUNTY NORTHWEST OF MURTAUGH, IDAHO; CLOSE-UP OF OUTLET SIDE OF GATES, SOUTH VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  1. 148. TWIN FALLS MAIN CANAL DIVERSION, TWIN FALLS COUNTY, MILNER ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    148. TWIN FALLS MAIN CANAL DIVERSION, TWIN FALLS COUNTY, MILNER DAM; HEADGATES AT INLET, SOUTHWEST VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  2. 98. SHOESTRING, TWIN FALLS MAIN CANAL, TWIN FALLS COUNTY NORTHWEST ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    98. SHOESTRING, TWIN FALLS MAIN CANAL, TWIN FALLS COUNTY NORTHWEST OF MURTAUGH, IDAHO; PROFILE VIEW, SOUTH. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  3. 141. TWIN FALLS MAIN CANAL DIVERSION, TWIN FALLS COUNTY, MILNER, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    141. TWIN FALLS MAIN CANAL DIVERSION, TWIN FALLS COUNTY, MILNER, IDAHO; CLOSE-UP OF MAIN HEADGATES, RADIAL GATES INSIDE, SOUTHEAST VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  4. 97. POINT SPILL, TWIN FALLS MAIN CANAL, TWIN FALLS COUNTY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    97. POINT SPILL, TWIN FALLS MAIN CANAL, TWIN FALLS COUNTY NORTHWEST OF MURTAUGH, IDAHO; OVERALL WEST VIEW FROM CANAL SIDE. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  5. 149. TWIN FALLS MAIN CANAL DIVERSION, TWIN FALLS COUNTY, MILNER ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    149. TWIN FALLS MAIN CANAL DIVERSION, TWIN FALLS COUNTY, MILNER DAM; CLOSE-UP OF MAIN CANAL GATES, SOUTH VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  6. Twins discordant for myositis and systemic lupus erythematosus show markedly enriched autoantibodies in the affected twin supporting environmental influences in pathogenesis

    PubMed Central

    2014-01-01

    Background Studies of twin pairs discordant for autoimmune conditions provide a unique opportunity to explore contributing factors triggered by complex gene-environment interactions. Methods In this cross-sectional study, thirty-one monozygotic or dizygotic twin pairs discordant for myositis or systemic lupus erythematosus (SLE), along with matched healthy controls were evaluated for antibodies against a panel of 21 autoantigens. Results Autoantibody profiling revealed that 42% of the affected twins showed significant seropositivity against autoantigens in the panel. In many of these affected twins, but none of healthy controls, there were high levels of autoantibodies detected against two or more autoantigens commonly seen in systemic autoimmune diseases including Ro52, Ro60, RNP-70 K and/or RNP-A. In contrast, only 10% (3/31) of the unaffected twins showed seropositivity and these immunoreactivities were against single autoantigens not seen in systemic autoimmune diseases. While no significant differences in autoantibodies were detected between the affected or unaffected twins against thyroid peroxidase, transglutaminase and several cytokines, 23% of the affected twins with myositis showed autoantibodies against the gastric ATPase. Analysis of the monozygotic twins separately also revealed a higher frequencies of autoantibodies in the affected twins compared to the unaffected twins (P?=?0.046). Lastly, clinical analysis of both the affected monozygotic and dizygotic twins revealed that the autoantibody seropositive affected twins had a greater global disease activity score compared to seronegative affected twins (P?=?0.019). Conclusion The findings of significantly more autoantibodies in the affected twins with myositis and SLE compared to the unaffected twins are consistent with potential non-genetic factors playing a role in autoantibody production and pathogenesis of these autoimmune disorders. PMID:24602337

  7. Supersymmetry with a sister Higgs boson

    NASA Astrophysics Data System (ADS)

    Alves, Daniele S. M.; Fox, Patrick J.; Weiner, Neal

    2015-03-01

    We consider a simple addition to the minimal supersymmetric Standard Model (MSSM) of a "sister Higgs" (?d), a Higgs field that participates in electroweak symmetry breaking but does not give any direct masses to Standard Model matter fields. If this new field carries charge under a new gauge group, Gs, the Higgs mass is naturally much larger than in the MSSM due to a next-to-minimal supersymmetric Standard Model-type interaction, but with ?d playing the role of Hd. The addition of the sister Higgs allows new R -parity violating operators ?dHdE , which are less constrained than a conventional leptonic R -parity violation. Unification motivates the presence of colored Gs-charged fields, whose production can lead to new b -rich final states and modifications to decays of gluinos, as well as new opportunities for R -parity violation. The presence of additional sister charges allows the possibilities that a lightest sister-charged particle (LSiP) could be stable, although we find the possibility of a LSiP dark matter candidate is generally very constrained.

  8. Getting Along with Brothers and Sisters

    MedlinePLUS

    ... friends might change, but your family is your family forever. Reviewed by: D'Arcy Lyness, PhD Date reviewed: September 2013 Back 1 ? 2 For ... About Your Feelings Welcoming a New Baby Into Your Family Kids Talk About: Brothers and Sisters Living With ...

  9. INTRODUCTION Mitotic metaphase chromosomes show sister chromatids

    E-print Network

    Villefranche sur mer

    . Meiosis I bivalents, as mitotic chromosomes, show sister-chromatid centromere and arm cohesions cohesion during meiosis I, and then release centromere cohesion during meiosis II (for review see Moore and Orr- Weaver, 1998). Consequently, this sequential loss of cohesion during meiosis might be precisely

  10. SISTER CHROMATID EXCHANGES IN MAMMALIAN MEIOTIC CHROMOSOMES

    EPA Science Inventory

    Very little is known about sister chromatid exchanges (SCEs) in meiotic cells--only that they occur (1) and reveal frequency and distribution patterns apparently unaffected by cross-over (CO) exchange conditions in those cells; (2) unfortunately, the number of studies from which ...

  11. Sisters at Work: Career and Community Changes.

    ERIC Educational Resources Information Center

    Briody, Elizabeth K.; Sullivan, Teresa A.

    1988-01-01

    The authors examine occupational differentiation of U.S. Catholic nuns before and since the Second Vatican Council. Data were collected from interviews with 30 sisters representing 11 congregations. The analysis relates the diversification of their careers to changes in ideology and life-style and to the changing demographic and financial status…

  12. CELL CYCLE: The Difficulty in Separating Sisters

    NSDL National Science Digital Library

    Terry L. Orr-Weaver (Whitehead Institute and the Massachusetts Institute of Technology; )

    1999-07-16

    Access to the article is free, however registration and sign-in are required. The separation of the tightly associated sister chromatids during the anaphase step of cell division is an intricately orchestrated event. Orr-Weaver, in her Perspective, discusses new findings by Zou et al. in this issue that reveal the underlying molecular machinery involved.

  13. Splitting the Chromosome: Cutting the Ties That Bind Sister Chromatids

    NSDL National Science Digital Library

    Kim Nasmyth (Research Institute of Molecular Pathology; )

    2000-05-26

    In eukaryotic cells, sister DNA molecules remain physically connected from their production at S phase until their separation during anaphase. This cohesion is essential for the separation of sister chromatids to opposite poles of the cell at mitosis. It also permits chromosome segregation to take place long after duplication has been completed. Recent work has identified a multisubunit complex called cohesin that is essential for connecting sisters. Proteolytic cleavage of one of cohesin's subunits may trigger sister separation at the onset of anaphase.

  14. Crocodile Talk: Attributions of Incestuously Abused and Nonabused Sisters.

    ERIC Educational Resources Information Center

    Monahan, Kathleen

    1997-01-01

    This qualitative study analyzed the retrospective attributions of adult sisters (five abused sister dyads, and five abused and nonabused sister dyads) who grew up in incestuous families. It examined the attributions of subjects regarding the general sibling group; victim selection and nonselection; and attributions regarding jealousy, protection,…

  15. The Lay Sister in Educational History and Memory.

    ERIC Educational Resources Information Center

    Jack, Christine Trimingham

    2000-01-01

    Focuses on the construction of lay sisters in a religious order and school setting using a poststructuralist orientation. Explains that in the study documents were examined and interviews were conducted with ex-students, choir nuns, and a lay sister at a small Catholic girls-preparatory boarding school. Explores the narrative of one lay sister.…

  16. Twin entanglement revisited.

    PubMed

    Kurzel, R B

    1998-09-01

    A fear of interlocking twins is one factor that has led to a high Cesarean section (C/S) rate in breech (A)/vertex (B) (Br(a)/Vtx(b)) twins. We sought to estimate the frequency of occurrence of twin entanglement, and of interlocking Br(a)/Vtx(b) twins in vaginal deliveries. 541 twins and 48,195 deliveries were retrospectively studied for the period 1987-1995. The incidence of Br(a)/Vtx(b) deliveries was noted, and the number of deliveries marked by interlocking and collision of fetuses. The mode of delivery, reason for C/S, and sources of perinatal mortality were noted. Only 43 deliveries were Br(a)/Vtx(b) (7.9% of all twins) and of these only 14 (32.6%) were delivered vaginally. One case of interlocking (2.3% of all Br(a)/Vtx(b) pairs) and five cases of collision of twins (ie competition for entry into the pelvic inlet with obstruction) were noted. All cases mentioned were delivered by C/S. No perinatal mortality resulted from these cases. In recent years the trend has been for greater use of C/S and ultrasound in managing twin deliveries. In this study 67.4% of Br(a)/Vtx(b) twins were delivered by C/S. Although there are fewer vaginal deliveries of these twins and the rate for interlocking (2.3%; 95% CI: 0.06-12.3%) for the whole group has remained about the same, we found the rate in those twins allowed vaginal delivery was 6.7% (95% CI: 0.2-31.9%). The presentation at greatest risk for entanglement was found to be Br(a)/Vtx(b). PMID:10051338

  17. Tuberculosis: Getting Healthy, Staying Healthy

    MedlinePLUS

    Tuberculosis Getting Healthy, Staying Healthy U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES National Institutes of Health National Institute of Allergy and Infectious Diseases Tuberculosis Getting Healthy, Staying Healthy U.S. DEPARTMENT OF HEALTH ...

  18. Childbirth, hospitalisation and sickness absence: a study of female twins

    PubMed Central

    Björkenstam, Emma; Alexanderson, Kristina; Narusyte, Jurgita; Kjeldgĺrd, Linnea; Ropponen, Annina; Svedberg, Pia

    2015-01-01

    Objective To investigate associations of giving birth with morbidity in terms of hospitalisation and social consequences of morbidity in terms of sickness absence (SA), while taking familial (genetics and shared environmental) factors into account. Design Prospective register-based cohort study. Estimates of risk of hospitalisation and SA were calculated as HRs with 95% CIs. Setting All female twins, that is, women with a twin sister, born in Sweden. Participants 5118 Swedish female twins (women with a twin sister), born during 1959–1990, where at least one in the twin pair had their first childbirth (T0) during 1994–2009 and none gave birth before 1994. Main outcome measures Hospitalisation and SA during year 3–5 after first delivery or equivalent. Results Preceding the first childbirth, the mean annual number of SA days increased for mothers, and then decreased again. Hospitalisation after T0 was associated with higher HRs of short-term and long-term SA (HR for short-term SA 3.0; 95% CI 2.5 to 3.6 and for long-term SA 2.3; 95% CI 1.6 to 3.2). Hospitalisation both before and after first childbirth was associated with a higher risk of future SA (HR for long-term SA 4.2; 95% CI 2.7 to 6.4). Familial factors influenced the association between hospitalisation and long-term SA, regardless of childbirth status. Conclusions Women giving birth did not have a higher risk for SA than those not giving birth and results indicate a positive health selection into giving birth. Mothers hospitalised before and/or after giving birth had higher risks for future SA, that is, there was a strong association between morbidity and future SA. PMID:25573523

  19. Effect of borax on immune cell proliferation and sister chromatid exchange in human chromosomes

    PubMed Central

    Pongsavee, Malinee

    2009-01-01

    Background Borax is used as a food additive. It becomes toxic when accumulated in the body. It causes vomiting, fatigue and renal failure. Methods The heparinized blood samples from 40 healthy men were studied for the impact of borax toxicity on immune cell proliferation (lymphocyte proliferation) and sister chromatid exchange in human chromosomes. The MTT assay and Sister Chromatid Exchange (SCE) technic were used in this experiment with the borax concentrations of 0.1, 0.15, 0.2, 0.3 and 0.6 mg/ml. Results It showed that the immune cell proliferation (lymphocyte proliferation) was decreased when the concentrations of borax increased. The borax concentration of 0.6 mg/ml had the most effectiveness to the lymphocyte proliferation and had the highest cytotoxicity index (CI). The borax concentrations of 0.15, 0.2, 0.3 and 0.6 mg/ml significantly induced sister chromatid exchange in human chromosomes (P < 0.05). Conclusion Borax had effects on immune cell proliferation (lymphocyte proliferation) and induced sister chromatid exchange in human chromosomes. Toxicity of borax may lead to cellular toxicity and genetic defect in human. PMID:19878537

  20. Personality, depression, and premorbid lifestyle in twin pairs discordant for Parkinson’s disease

    Microsoft Academic Search

    Ilse Heberlein; Hans-Peter Ludin; Joachim Scholz; Peter Vieregge

    1998-01-01

    Present personality traits (Freiburg personality inventory, FPI-R), depression (von Zerssen’s depression scale), and self assessed state of health were evaluated in 15 twin pairs (six monozygotic and nine dizygotic; mean age 62.5 years) discordant for idiopathic Parkinson’s disease and in 17 unrelated healthy control subjects. The twins had additional questionnaire based interviews on premorbid lifestyle.For disability, twins with Parkinson’s disease

  1. Fertility and longevity in twins, sibs, and parents of twins

    Microsoft Academic Search

    Grace Wyshak

    1978-01-01

    Genealogical records containing birth and death dates for completed families have been analyzed to compare the longevity of twins, sibs and parents. The data are restricted to twins and sibs who survived to adulthood and married. The findings, similar to those found with respect to fertility (Wyshak and White, 1969), show that twins, especially male twins, are disadvantaged in comparison

  2. Personality, depression, and premorbid lifestyle in twin pairs discordant for Parkinson's disease

    PubMed Central

    Heberlein, I.; Ludin, H.; Scholz, J.; Vieregge, P.

    1998-01-01

    Present personality traits (Freiburg personality inventory, FPI-R), depression (von Zerssen's depression scale), and self assessed state of health were evaluated in 15 twin pairs (six monozygotic and nine dizygotic; mean age 62.5 years) discordant for idiopathic Parkinson's disease and in 17 unrelated healthy control subjects. The twins had additional questionnaire based interviews on premorbid lifestyle.?For disability, twins with Parkinson's disease scored lower on FPI-R than controls in "achievement orientation" and "extraversion", higher in "inhibitedness", "somatic complaints", and "emotionality". They scored higher for depression and for state of health than unaffected twins and controls. For zygosity, monozygotic twins scored lower than dizygotic twins in "achievement orientation", "aggressiveness", and "strain". Monozygotic twins had less "achievement orientation" and "extraversion" and more "somatic complaints" than controls. Monozygotic twins had a lower within pair difference than dizygotic twins in "social orientation". During premorbid times the affected twin with later Parkinson's disease was estimated to have been "less often the leader" in the twin pair.?Although small in sample size, this twin study indicates a genetic impact for some personality features beyond the Parkinson's disease motor syndrome.?? PMID:9489545

  3. Determinants of pressure pain threshold in adult twins: evidence that shared environmental influences predominate

    Microsoft Academic Search

    Alexander J. MacGregor; Gareth O. Griffiths; Juliet Baker; Timothy D. Spector

    1997-01-01

    The objective of this study was to examine the relative contribution of genetic and environmental factors in determining pain perception in a classical twin study. Dolorimeter measurements of pressure pain threshold (PPT) were recorded in 609 healthy female-female twin pairs of whom 269 pairs were monozygotic (MZ) and 340 were dizygotic (DZ). There was a strong correlation (R) in PPT

  4. Birth weight references for twins

    Microsoft Academic Search

    Sung-Joon Min; Barbara Luke; Brenda Gillespie; Linda Min; Roger B. Newman; Jill G. Mauldin; Frank R. Witter; Fawwaz A. Salman; Mary Jo O’Sullivan

    2000-01-01

    Objective: We sought to formulate fetal and birth weight references for twins from longitudinal data. Study Design: This historic cohort study was based on 1831 pregnancies of twins born alive at ?28 weeks’ gestation from Baltimore, Maryland; Miami, Florida; Charleston, South Carolina; and Ann Arbor, Michigan. Results: When we compared singletons and twins, the percentiles of twins fell substantially below

  5. Classical twin studies and beyond

    Microsoft Academic Search

    Andreas Busjahn; Leena Peltonen; Dorret Boomsma

    2002-01-01

    Twin studies have been a valuable source of information about the genetic basis of complex traits. To maximize the potential of twin studies, large, worldwide registers of data on twins and their relatives have been established. Here, we provide an overview of the current resources for twin research. These can be used to obtain insights into the genetic epidemiology of

  6. An Investigation of Exceptional Twins.

    ERIC Educational Resources Information Center

    Crismore, Avon

    The author, herself a mother of twins, reviews research on exceptional twins. She considers reasons for fascination with twins and comments upon important advances in technology. Current research in Indianapolis to measure cognitive, perceptual, personality, and chromosome patterns of twins is described. Differences in the makeup of identical and…

  7. Twin-to-Twin Transfusion Syndrome

    PubMed Central

    Mahieu-Caputo, Dominique; Dommergues, Marc; Delezoide, Anne-Lise; Lacoste, Mireille; Cai, Yi; Narcy, Françoise; Jolly, Dominique; Gonzales, Marie; Dumez, Yves; Gubler, Marie-Claire

    2000-01-01

    The twin-to-twin transfusion syndrome (TTS) results from an unbalanced blood supply through placental anastomoses in monochorionic twins. It induces growth restriction, renal tubular dysgenesis, and oliguria in the donor and visceromegaly and polyuria in the recipient. A better understanding of its pathophysiology could contribute to improving the management of TTS, which still carries a high perinatal mortality in both twins. As well as several other candidates, the renin-angiotensin system might be involved in TTS. To evaluate its role in the pathogenesis of the syndrome, we studied the kidneys of 21 twin pairs who died from TTS at 19 to 30 weeks, compared with 39 individuals in a control group, using light microscopy, immunohistochemistry, and in situ hybridization. The overexpression of the renin protein and transcript with frequent evidence of renin synthesis by mesangial cells was observed in the donor kidneys, presumably as a consequence of chronic renal hypoperfusion. This upregulation of renin synthesis might be beneficial to restore euvolemia. In severe cases of TTS, however, angiotensin-II-induced vasoconstriction acts as an additional deleterious factor by further reducing the renal blood flow in donors. In recipients, renin expression was virtually absent, possibly because it was down-regulated by hypervolemia. However, in addition to congestion and hemorrhagic infarction, there were severe glomerular and arterial lesions resembling those observed in polycythemia- or hypertension-induced microangiopathy. We speculate that fetal hypertension in the recipient might be partly mediated by the transfer of circulating renin produced by the donor, through the placental vascular shunts. PMID:10666392

  8. TwinDocs

    NSDL National Science Digital Library

    2013-02-15

    TwinDocs is a novel way to upload documents to a personal storage device quickly. Visitors need to sign up for a free account and then they can get started. The TwinDocs application gives users the ability to access any document remotely from technology such as an iPhone, iPad, or Android device. The free version of TwinDocs gives users 1GB of storage and the ability to store 25 documents a month. This version is compatible with all operating systems.

  9. Healthy Aging

    MedlinePLUS

    ... About Us Contact Us Text size | Print | Healthy Aging This information in Spanish ( en espańol ) A healthy ... Aging email updates. Enter email address Submit Healthy Aging news Accessibility | Privacy policy | Disclaimers | FOIA | Link to ...

  10. A comprehensive neuropsychiatric study of elderly twins: the Older Australian Twins Study.

    PubMed

    Sachdev, Perminder S; Lammel, Andrea; Trollor, Julian N; Lee, Teresa; Wright, Margaret J; Ames, David; Wen, Wei; Martin, Nicholas G; Brodaty, Henry; Schofield, Peter R

    2009-12-01

    The Older Australian Twins Study (OATS) was recently initiated to investigate genetic and environmental factors and their associations and interactions in healthy brain ageing and ageing-related neurocognitive disorders. The study extends the classic MZ-DZ design to include one or two equivalently aged siblings for each twin pair and utilizes the rich resources of the Australian Twin Registry. The study has a number of distinguishing features including comprehensive psychiatric, neuropsychological, cardiovascular, metabolic, and neuroimaging assessments, a longitudinal design and links with a brain donor program. The study measures many behavioral and environmental factors, but in particular lifetime physical and mental activity, physical and psychological trauma, loss of parent early in life, later losses and life events, early-life socioeconomic environment, alcohol and drug use, occupational exposure, and nutrition. It also includes comprehensive cardiovascular assessment, blood biochemistry, genetics and proteomics. The socio-demographic and health data on the first 172 pairs of twins participating in this study are presented. Prevalence of mild cognitive impairment is 12.8% and of dementia 1.5% in the sample. The target sample size is 1000, with at least 400 pairs of twins aged 65-90 years. The cohort will be assessed every two years, with in-depth assessments being repeated. OATS offers an excellent opportunity for collaboration with other similar studies as well as researchers who share the same interests. PMID:19943720

  11. Twins, Together Too Much?

    ERIC Educational Resources Information Center

    Brodkin, Adele M.

    1997-01-01

    Notes both teacher's and parents' concerns over placing twin boys in the same early childhood classroom. Offers suggestions for teachers and parents to foster each child's independence and character traits without the trauma of placing them in separate environments. (HTH)

  12. Dogs Discriminate Identical Twins

    PubMed Central

    Pinc, Ludvík; Bartoš, Lud?k; Reslová, Alice; Kotrba, Radim

    2011-01-01

    Earlier studies have shown variation among experimental attempts to establish whether human monozygotic twins that are genetically identical also have identical individual scents. In none of the cases were the dogs able to distinguish all the individual scents of monozygotic twins living in the same environment if the scents were presented to them separately. Ten specially trained police German Shepherd dogs of three Czech Republic Police Regional Headquarters were used for scent identification in our study. The dogs were supposed to match scents of two monozygotic pairs (5 and 7 years old) and two dizygotic twin pairs (8 and 13 years old). Scents were collected on cotton squares stored in glass jars. Dog handlers were blind to the experiment details. In each trial (line-up), one scent was used as a starting scent and the dog was then sent to determine if any of the 7 presented glass jars contained a matching scent. Scents of children of similar ages were used as distractors. In the matching procedure, the dogs matched correctly the scent of one twin with the other, as well as two scents collected from every single identical and non-identical twin to prove their efficacy and likewise, the presence of the matching twin scent in any given glass jar. All dogs in all trials distinguished correctly the scents of identical as well as non-identical twins. All dogs similarly matched positively two scents collected from the same individuals. Our findings indicated that specially trained German Shepherd dogs are able to distinguish individual scents of identical twins despite the fact that they live in the same environment, eat the same food and even if the scents are not presented to them simultaneously. PMID:21698282

  13. Healthy shiftwork, healthy shiftworks.

    PubMed

    Kogi, K

    2001-12-01

    Reflecting diversifying shift systems, extensive effort is put into managing shiftwork and reducing safety and health risks. It is accepted that shiftworkers are exposed to particular risks inherent in their irregular work schedules. This raises the question of how and to what extent we can ensure healthy work life for shiftworkers. In answering the question, we need to identify effective measures to improve both shiftworking conditions and the health of shiftworkers. Based on recent experiences in managing shiftwork, we note three directions of such measures: (a) comprehensive action to avoid risk-enhancing conditions based on general guidelines, (b) risk control as to workload, worksite ergonomics and risk reduction, and (c) support for flexible and restful working life. International standards are obviously relevant to these three aspects. Our own experiences in applying a set of ergonomic checkpoints to plant maintenance shiftwork demonstrate the usefulness of focusing on flexible work schedules and on multiple job-related factors such as night workload, ergonomic environment, resting conditions and training. There is a strong need for participatory planning and implementation of multi-area improvements as well as for relying on flexible schedules and autonomic teamwork. We may conclude that healthy shiftwork and healthy shiftworkers are compatible with each other only when certain conditions are met. In achieving this end, we need to combine (a) comprehensive measures to improve work schedules and job life, (b) strict risk management and (c) locally adjusted participatory steps for continual improvement. PMID:14564850

  14. Dicephalic parapagus tribrachius conjoined twins in a triplet pregnancy: a case report.

    PubMed

    Kaveh, Mahbod; Kamrani, Kamyar; Naseri, Mohsen; Danaeian, Morteza; Asadi, Farhad; Davari-Tanha, Fatemeh

    2014-06-01

    Dicephalic parapagus tribrachius conjoined twin is a very rare condition. We present a case of 5-days-old male dicephalic parapagus conjoined twins. The conjoined twins were diagnosed in 4(th) month of pregnancy by ultrasonography. The pregnancy terminates at 36 weeks by cesarean section and triplets were born. The babies were male conjoined twins and another healthy male baby. Many congenital defects of interest can now be detected before birth. Sever form of this malformation precludes postpartum life. It is supposed that with advances in screening methods for prenatal diagnosis these cases are terminated in first or second trimester of pregnancy. PMID:24971140

  15. Dicephalic Parapagus Tribrachius Conjoined Twins in a Triplet Pregnancy: A Case Report

    PubMed Central

    Kamrani, Kamyar; Naseri, Mohsen; Danaeian, Morteza; Asadi, Farhad; Davari-Tanha, Fatemeh

    2014-01-01

    Dicephalic parapagus tribrachius conjoined twin is a very rare condition. We present a case of 5-days-old male dicephalic parapagus conjoined twins. The conjoined twins were diagnosed in 4th month of pregnancy by ultrasonography. The pregnancy terminates at 36 weeks by cesarean section and triplets were born. The babies were male conjoined twins and another healthy male baby. Many congenital defects of interest can now be detected before birth. Sever form of this malformation precludes postpartum life. It is supposed that with advances in screening methods for prenatal diagnosis these cases are terminated in first or second trimester of pregnancy. PMID:24971140

  16. 78 FR 45061 - Safety Zone; Sister Bay Marina Fest Fireworks and Ski Show, Sister Bay, WI

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-26

    ...Protection of Children from Environmental Health Risks and Safety Risks...rule and does not create an environmental risk to health or risk to...Commandant Instruction. An environmental analysis checklist supporting...Marina Fest Fireworks and Ski Show, Sister Bay,...

  17. Differential giemsa staining of sister chromatids and the study of sister chromatid exchanges without autoradiography

    Microsoft Academic Search

    Sheldon Wolff; Paul Perry

    1974-01-01

    Chinese hamster ovary cells grown for two rounds of DNA replication in the presence of BrdUrd contain sister chromatids that fluoresce differentially when stained with Hoechst 33258. If such fluorescent treatments are followed by incubation in 2 X SSC or water at 62° C and staining in 3% Giemsa, the chromosomes now contain one dark (unifilarly substituted) chromatid and one

  18. Chronic Idiopathic Neutrophilia in Two Twins

    PubMed Central

    Miniero, Roberto; Altomare, Federica; Fusaro, Carla

    2014-01-01

    Neutrophilia in adults refers to an alteration in the total number of blood neutrophils that is in excess of about 7500 cells/?L. This definition is restrictive in childhood as neutrophil count is age-dependent. Chronic Idiopathic Neutrophilia (CIN) refers to a condition that persists for many years in individuals who appear otherwise healthy. CIN is rarely mentioned in scientific literature and in academic books of hematology; only few words are dedicated to this topic. We report a case study of two twins with CIN followed from the first year of life to 24 years of age. To the best of our knowledge this is the first case report of two twins with CIN followed through a long period of time. We believe that our observation may contribute to better understand and characterize this hematologic abnormality. PMID:25431700

  19. Intravenous iron administration together with parenteral nutrition to very preterm Jehovah's Witness twins.

    PubMed

    Poorisrisak, Porntiva; Schroeder, Allan Mikael; Greisen, Gorm; Zachariassen, Gitte

    2014-01-01

    Preterm twin sisters (monozygotic) were born at gestational age 27?weeks and 5?days with birth weights of 935 and 735?g. They were admitted to our neonatal intensive care unit for a period of 1?month. Their parents were Jehovah's Witnesses and refused blood transfusion for their preterm daughters. Subcutaneous erythropoietin and intravenous iron were given as a prophylactic to avoid anaemia. PMID:24891477

  20. Duplication of the Renal Pelvis and Blind-Ending Bifid Ureter in Twins

    Microsoft Academic Search

    Bo Bergman; Goran Hansson; Arne E. V. Nilson

    1977-01-01

    Blind-ending bifid ureter in a woman with urinary tract infection and a duplicated renal pelvis in her twin sister are reported. The blind-ending bifid ureter terminated as a fibrous cord with a terminal mass of immature renal tissue. This type of ureter may be a transitional form between histologically blind-ending bifid ureter and duplication of the renal pelvis and\\/or kidneys.

  1. Modern Physics Problem: Twin Paradox

    NSDL National Science Digital Library

    Wolfgang Christian

    The animation has 3 moving dots. The black dot corresponds to the Earthbound twin. The leading green dot gives the simultaneous (according to Earth) position of the traveling twin. The trailing red dot, which will change to blue, indicates what the Earthbound twin actually sees. (The color change represents the Doppler shift as the earthbound twin looks at his brother.) It lags the other red dot on the outbound leg, as the image of the traveling twin received by the Earthbound twin is late due to the light travel time. On the return leg, this dot turns blue and rapidly catches up to the green dot.

  2. Serial MR imaging and 1H-MR spectroscopy in monozygotic twins with Tay-Sachs disease.

    PubMed

    Imamura, A; Miyajima, H; Ito, R; Orii, K O

    2008-10-01

    Four-year-old monozygotic female twins with early onset Tay-Sachs disease are described. The sisters showed similar slowly progressive clinical symptoms and deterioration, however the younger sister also demonstrated intractable myoclonus in the right leg. The serial MR images and (1)H-MR spectroscopy of the brain were obtained in both twins. MR images showed high intensity on T (2)-weighted image in the bilateral white matter, however there were no signal changes in the basal ganglia and thalamus during any of the phases. The ratio of N-acetylaspartate (NAA)/creatine (Cr) was decreased in the both white matter lesions and the corpus striatum, and that of myoinositol (mI)/Cr was increased in the damaged white matter on MR spectroscopy. The elevation of the lactate peak was clearly demonstrated in the left basal ganglia of the younger sister; however it was not shown in cerebral lesions of the elder sister. Changes in metabolites on MR spectroscopy were closely linked to the respective clinical features of each twin. Follow-up examination by (1)H-MR spectroscopy is useful for the evaluation of neuronal changes in children with Tay-Sachs disease. PMID:19294598

  3. IVF for premature ovarian failure: first reported births using oocytes donated from a twin sister

    Microsoft Academic Search

    Eric Scott Sills; Adam C Brady; Ahmed B Omar; David J Walsh; Umme Salma; Anthony PH Walsh

    2010-01-01

    BACKGROUND: Premature ovarian failure (POF) remains a clinically challenging entity because in vitro fertilisation (IVF) with donor oocytes is currently the only treatment known to be effective. METHODS: A 33 year-old nulligravid patient with a normal karyotype was diagnosed with POF; she had a history of failed fertility treatments and had an elevated serum FSH (42 mIU\\/ml). Oocytes donated by

  4. Andromeda and the Milky Way: Twin sisters, distant relations, or strangers in the night?

    NASA Astrophysics Data System (ADS)

    McConnachie, A.; Richardson, J.; Mackey, D.

    2012-02-01

    I summarize some recent key results from the Pan-Andromeda Archaeological Survey (PAndAS), in particular showing how recent discoveries in and around M31 compare to the known structure of the Milky Way and its satellite population.

  5. Refinement of Twinned Structures with SHELXL97

    Microsoft Academic Search

    Regine Herbst-Irmer; George M. Sheldrick

    1998-01-01

    Four examples of the refinement of twinned structures are discussed. These structures illustrate three different types of twins: twinning by merohedry, pseudo-mero- hedry and non-merohedral twins. How the twinning was detected, how the structures were solved and how they were refined are shown in this paper. The difference between a refinement as a disordered model and a twinned model is

  6. EarthLabs Meet Sister Corita Kent

    NASA Astrophysics Data System (ADS)

    Quartini, E.; Ellins, K. K.; Cavitte, M. G.; Thirumalai, K.; Ledley, T. S.; Haddad, N.; Lynds, S. E.

    2013-12-01

    The EarthLabs project provides a framework to enhance high school students' climate literacy and awareness of climate change. The project provides climate science curriculum and teacher professional development, followed by research on students' learning as teachers implement EarthLabs climate modules in the classroom. The professional development targets high school teachers whose professional growth is structured around exposure to current climate science research, data observation collection and analysis. During summer workshops in Texas and Mississippi, teachers work through the laboratories, experiments, and hand-on activities developed for their students. In summer 2013, three graduate students from the University of Texas at Austin Institute for Geophysics with expertise in climate science participated in two weeklong workshops. The graduate students partnered with exemplary teacher leaders to provide scientific content and lead the EarthLabs learning activities. As an experiment, we integrated a visit to the Blanton Museum and an associated activity in order to motivate participants to think creatively, as well as analytically, about science. This exercise was inspired by the work and educational philosophy of Sister Corita Kent. During the visit to the Blanton Museum, we steered participants towards specific works of art pre-selected to emphasize aspects of the climate of Texas and to draw participants' attention to ways in which artists convey different concepts. For example, artists use of color, lines, and symbols conjure emotional responses to imagery in the viewer. The second part of the exercise asked participants to choose a climate message and to convey this through a collage. We encouraged participants to combine their experience at the museum with examples of Sister Corita Kent's artwork. We gave them simple guidelines for the project based on techniques and teaching of Sister Corita Kent. Evaluation results reveal that participants enjoyed the activity and saw its value for enhancing their own appreciation of climate science. However, participants expressed skepticism about using the exercise with their own students. Teachers' perception was that students would not make the same connections that they did. From our perspective and participants' enthusiasm we encourage collaboration between art and science teachers in joint activities that emphasize the link between art and science.

  7. Dialysis for twins

    PubMed Central

    Gramkow, Ann-Maria; Aarup, Michael; Andersen, Lise Lotte Torvin; Tepel, Martin

    2014-01-01

    A 32-year-old woman with known stage-4 chronic kidney disease due to lupus nephritis presented with twin pregnancy after in vitro fertilization at a gestational age of 24 weeks + 3 days because of imminent preterm labour. Repeated ultrasound evaluations confirmed intrauterine growth restriction in both twins and polyhydramnios as the cause of imminent preterm labour. After initiation of haemodialysis treatment, ultrasound evaluation showed a significant decrease in amniotic fluids, and also reduction in blood urea nitrogen and in clinical complaints could be observed. At a gestational age of 28 weeks + 4 days, delivery was performed by Caesarean section. This case study shows that effective treatment of elevated uraemic toxins significantly reduced the morbidity risks of the twins.

  8. Shugoshin Promotes Sister Kinetochore Biorientation in Saccharomyces cerevisiae

    Microsoft Academic Search

    Brendan M. Kiburz; Angelika Amon; Adele L. Marston

    2008-01-01

    Chromosome segregation must be executed accurately during both mitotic and meiotic cell divisions. Sgo1 plays a key role in ensuring faithful chromosome segregation in at least two ways. During meiosis this protein regulates the removal of cohesins, the proteins that hold sister chromatids together, from chromosomes. During mitosis, Sgo1 is required for sensing the absence of tension caused by sister

  9. RESEARCH ARTICLE Continuing inflation at Three Sisters volcanic center,

    E-print Network

    . Wicks Received: 28 November 2007 /Accepted: 24 April 2009 /Published online: 17 June 2009 # US composite cones of Quaternary age: Middle Sister, South Sister, and Broken Top. Most, if not all, of Middle, east, and north flanks (Scott 1987). As recently as 1.6 to 1.2 ka, domi- nantly effusive eruptions

  10. Fused sister kinetochores initiate the reductional division in meiosis I

    E-print Network

    LETTERS Fused sister kinetochores initiate the reductional division in meiosis I Xuexian Li1 and R. Kelly Dawe1,2,3 During meiosis I the genome is reduced to the haploid content by a coordinated MIS12­NDC80 bridge between sister kinetochores at meiosis I is broken. Kinetochores separate

  11. Mentoring At-Risk Adolescent Girls: Listening to "Little Sisters"

    ERIC Educational Resources Information Center

    Maldonado, Nancy L.; Quarles, Alice; Lacey, Candace H.; Thompson, Steve D.

    2008-01-01

    In order to develop an understanding of mentoring relationships and the impact these relationships might have on the development of high-risk adolescent girls, this qualitative study explored the relationships between six "Little Sisters" and their "Big Sister" mentors. The purposefully-selected sample includes women and girls who were actively…

  12. Freud s Sisters A Fantasia on a Photograph

    Microsoft Academic Search

    Elsa First

    2000-01-01

    This psychoanalytically based imaginative inquiry into the role of Freud's sisters in shaping the meanings of Femaleness and gender difference for Freud starts from the author's study of a photograph in the Library of Congress Freud exhibit, “Portrait of the Jakob Freud Family ca. 1876,” which shows Sigmund Freud, age 20, with his live then adolescent sisters. Freud's Dream of

  13. Pericentromeric Sister Chromatid Cohesion Promotes Kinetochore Biorientation

    PubMed Central

    Ng, Tessie M.; Waples, William G.; Lavoie, Brigitte D.

    2009-01-01

    Accurate chromosome segregation depends on sister kinetochores making bioriented attachments to microtubules from opposite poles. An essential regulator of biorientation is the Ipl1/Aurora B protein kinase that destabilizes improper microtubule–kinetochore attachments. To identify additional biorientation pathways, we performed a systematic genetic analysis between the ipl1-321 allele and all nonessential budding yeast genes. One of the mutants, mcm21?, precociously separates pericentromeres and this is associated with a defect in the binding of the Scc2 cohesin-loading factor at the centromere. Strikingly, Mcm21 becomes essential for biorientation when Ipl1 function is reduced, and this appears to be related to its role in pericentromeric cohesion. When pericentromeres are artificially tethered, Mcm21 is no longer needed for biorientation despite decreased Ipl1 activity. Taken together, these data reveal a specific role for pericentromeric linkage in ensuring kinetochore biorientation. PMID:19605555

  14. Aquagenic urticaria in twins

    PubMed Central

    2013-01-01

    We describe the case of 18 year old twin brothers who presented to our unit with a 3 year history of aquagenic urticaria. This rare form of urticaria usually presents within an hour of contact with water. The aetiology is unknown. Most cases are sporadic but there are a small number of familial cases in the medical literature. A specific genetic mutation has not yet been found. To our knowledge, this is the first report of aquagenic urticaria in monozygotic twins, further supporting a genetic component to this disease. PMID:23663417

  15. Twin Supergravities Diederik Roest 1

    E-print Network

    Paris-Sud XI, Université de

    UG-09-04 Twin Supergravities Diederik Roest 1 and Henning Samtleben 2 1 Centre for Theoretical of supergravities can have identical bosonic field content but different fermionic extensions. Such twin theories discuss the possible gaugings and scalar poten- tials of twin theories. This allows to pinpoint to which

  16. University of Minnesota Twin Cities

    E-print Network

    Amin, S. Massoud

    University of Minnesota Twin Cities Emergency Operations Plan © 2011 Regents of the University of Minnesota. All rights reserved. Revision 5.0, September 2011 #12;University of Minnesota - Twin Cities - Twin Cities Emergency Operations Plan Revision 5.0 TABLE OF CONTENTS Basic Plan Introduction Purpose

  17. Healthy Snacks

    NSDL National Science Digital Library

    WGBH Educational Foundation

    2011-07-01

    This animated video segment adapted from the Centers for Disease Control and Prevention, featuring American Indian characters, offers suggestions of what to eat for healthy snacks and looks at why less healthy snacks should be considered sometimes foods.

  18. Healthy Eating

    MedlinePLUS

    ... meals . Serve a variety of healthy foods and snacks. Be a role model by eating healthy yourself. ... eat fruits, vegetables, and grains less likely to snack on unhealthy foods less likely to smoke, use ...

  19. Healthy Aging

    MedlinePLUS

    Healthy Aging This category offers tips on how to stay healthy, get good health care, and manage lifestyle changes ... with Smell Problems with Taste Skin Care and Aging Sleep and Aging Taking Medicines Talking with Your ...

  20. Staying Healthy

    MedlinePLUS

    ... Healthy What can people with Alpha-1-related emphysema do to stay as healthy as possible? First ... enzyme that causes the damage that leads to emphysema. If you currently smoke, ask your doctor or ...

  1. Healthy Eating

    NSDL National Science Digital Library

    Mrs. Smith

    2011-12-12

    Using websites and interactive games students will discover how eating healthy effects their bodies. Healthy eating is important in helping our bodies function at their best! Follow the links below and then answer the questions in our Healthy Foods project folder on our class wiki! VisitDining Decisionsand play a fun game where you will load your lunch tray with healthy choices. How do your current lunch choices ...

  2. Healthy Eating

    NSDL National Science Digital Library

    Kate Anderson

    2012-04-30

    Questions to Know Beforehand: Image How much food does your body need, daily? What types of food help your body function at its best? What else does your body need to stay healthy? Use the following links to assist you in classifying healthy and not-so-healthy food options and more. Food Nutrition NOVA ...

  3. 20 CFR 410.214 - Conditions of entitlement; parent, brother, or sister.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... false Conditions of entitlement; parent, brother, or sister. 410.214 ...410.214 Conditions of entitlement; parent, brother, or sister. An individual...a) Such individual: (1) Is the parent, brother, or sister (see §...

  4. 20 CFR 725.223 - Duration of entitlement; parent, brother, or sister.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...2014-04-01 false Duration of entitlement; parent, brother, or sister. 725.223 Section... § 725.223 Duration of entitlement; parent, brother, or sister. (a) A parent, sister, or brother is entitled to...

  5. 20 CFR 725.222 - Conditions of entitlement; parent, brother, or sister.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... false Conditions of entitlement; parent, brother, or sister. 725.222 ...725.222 Conditions of entitlement; parent, brother, or sister. (a) An individual...is eligible for benefits as a surviving parent, brother or sister if all of the...

  6. 20 CFR 725.222 - Conditions of entitlement; parent, brother, or sister.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... false Conditions of entitlement; parent, brother, or sister. 725.222 ...725.222 Conditions of entitlement; parent, brother, or sister. (a) An individual...is eligible for benefits as a surviving parent, brother or sister if all of the...

  7. 20 CFR 725.224 - Determination of relationship; parent, brother, or sister.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...false Determination of relationship; parent, brother, or sister. 725.224...224 Determination of relationship; parent, brother, or sister. (a) An individual will be considered to be the parent, brother, or sister of a...

  8. 20 CFR 725.224 - Determination of relationship; parent, brother, or sister.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...false Determination of relationship; parent, brother, or sister. 725.224...224 Determination of relationship; parent, brother, or sister. (a) An individual will be considered to be the parent, brother, or sister of a...

  9. 20 CFR 725.224 - Determination of relationship; parent, brother, or sister.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...false Determination of relationship; parent, brother, or sister. 725.224...224 Determination of relationship; parent, brother, or sister. (a) An individual will be considered to be the parent, brother, or sister of a...

  10. 20 CFR 725.222 - Conditions of entitlement; parent, brother, or sister.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... false Conditions of entitlement; parent, brother, or sister. 725.222 ...725.222 Conditions of entitlement; parent, brother, or sister. (a) An individual...is eligible for benefits as a surviving parent, brother or sister if all of the...

  11. 20 CFR 410.214 - Conditions of entitlement; parent, brother, or sister.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... false Conditions of entitlement; parent, brother, or sister. 410.214 ...410.214 Conditions of entitlement; parent, brother, or sister. An individual...a) Such individual: (1) Is the parent, brother, or sister (see §...

  12. 20 CFR 725.225 - Determination of dependency; parent, brother, or sister.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... false Determination of dependency; parent, brother, or sister. 725.225 ...225 Determination of dependency; parent, brother, or sister. An individual who is the miner's parent, brother, or sister will be...

  13. 20 CFR 725.223 - Duration of entitlement; parent, brother, or sister.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...2012-04-01 false Duration of entitlement; parent, brother, or sister. 725.223 Section... § 725.223 Duration of entitlement; parent, brother, or sister. (a) A parent, sister, or brother is entitled to...

  14. 20 CFR 410.340 - Determination of relationship; parent, brother, or sister.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...false Determination of relationship; parent, brother, or sister. 410.340...340 Determination of relationship; parent, brother, or sister. An individual will be considered to be the parent, brother, or sister of a...

  15. 20 CFR 725.225 - Determination of dependency; parent, brother, or sister.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... false Determination of dependency; parent, brother, or sister. 725.225 ...225 Determination of dependency; parent, brother, or sister. An individual who is the miner's parent, brother, or sister will be...

  16. 20 CFR 410.215 - Duration of entitlement; parent, brother, or sister.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...2010-04-01 false Duration of entitlement; parent, brother, or sister. 410.215 Section...Evidence § 410.215 Duration of entitlement; parent, brother, or sister. (a) parent, brother, or sister is entitled to...

  17. 20 CFR 725.222 - Conditions of entitlement; parent, brother, or sister.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... false Conditions of entitlement; parent, brother, or sister. 725.222 ...725.222 Conditions of entitlement; parent, brother, or sister. (a) An individual...is eligible for benefits as a surviving parent, brother or sister if all of the...

  18. 20 CFR 725.223 - Duration of entitlement; parent, brother, or sister.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...2011-04-01 false Duration of entitlement; parent, brother, or sister. 725.223 Section... § 725.223 Duration of entitlement; parent, brother, or sister. (a) A parent, sister, or brother is entitled to...

  19. 20 CFR 410.215 - Duration of entitlement; parent, brother, or sister.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...2011-04-01 false Duration of entitlement; parent, brother, or sister. 410.215 Section...Evidence § 410.215 Duration of entitlement; parent, brother, or sister. (a) parent, brother, or sister is entitled to...

  20. 77 FR 13585 - Three Sisters Irrigation District; Notice of Application Accepted for Filing and Soliciting...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-07

    ...Project No. 14364-000] Three Sisters Irrigation District; Notice of Application Accepted...2012. d. Applicant: Three Sisters Irrigation District. e. Name of Project: Three Sisters Irrigation District Hydroelectric Project....

  1. Vaccination Responses to Capsular Polysaccharides of Neisseria meningitidis and Haemophilus influenzae Type b in Two C2Deficient Sisters: Alternative Pathway-Mediated Bacterial Killing and Evidence for a Novel Type of Blocking IgG

    Microsoft Academic Search

    Barbro Selander; Elisabeth Wedege; Lennart Truedsson

    2000-01-01

    Meningitis caused by Neisseria meningitidis serogroup W-135 was diagnosed in a 14-year-old girl with a history of neonatal septicemia and meningitis caused by group B streptococci type III. C2 deficiency type I was found in the patient and her healthy sister. Both sisters were vaccinated with tetravalent meningococcal vaccine and a conjugate Haemophilus influenzae type b vaccine. Three main points

  2. Efficiency of working memory encoding in twins discordant for schizophrenia

    PubMed Central

    Bachman, Peter; Kim, Junghoon; Yee, Cindy M.; Therman, Sebastian; Manninen, Marko; Lönnqvist, Jouko; Kaprio, Jaakko; Huttunen, Matti O.; Näätänen, Risto; Cannon, Tyrone D.

    2009-01-01

    It has been proposed that patients with schizophrenia and some of their relatives suffer from reduced neurocognitive efficiency, increasing their sensitivity to experimental task demands. The present study evaluated such a possibility during performance of a working memory task by schizophrenia patients and their co-twins along with a healthy control sample. Electrophysiological data were obtained from sets of 9 twin pairs (monozygotic and dizygotic pairs collapsed) discordant for a diagnosis of schizophrenia and from 9 matched, healthy control twin pairs, during administration of a variable-load spatial working memory task. Event-related potentials (ERPs) were measured immediately after memory set onset and during a delay period. For correctly performed trials, slow-wave ERP activity measured during the late stimulus encoding and delay periods exhibited a significant Diagnostic Group-by-Memory Load interaction, with schizophrenia patients showing a differentially strong load effect. Patients’ co-twins displayed an intermediate level of load sensitivity while healthy controls showed no significant load effect. These results support an inefficiency model of neurocognitive dysfunction in schizophrenia, a pattern that appears to be related to the pathogenesis and inheritance of the disorder. Furthermore, this inefficiency appeared during the late stimulus encoding stage of working memory functioning, possibly reflecting disruptions in stimulus representation consolidation. PMID:19853415

  3. Pulmonary Artery Calcification in Recipient Twins of Twin to Twin Transfusion Syndrome: A Report of Three Cases

    Microsoft Academic Search

    A. Saxena; N. R. Soni

    2003-01-01

      Twin to twin transfusion syndrome may rarely complicate monochorionic twin gestation, resulting in discordant size of the\\u000a twins. Cardiac dysfunction and various types of cardiac defects have been described in the recipient twin of this syndrome.\\u000a Pulmonary artery calcification has been described earlier in one case only. We report three recipients of twin to twin transfusion\\u000a syndrome with pulmonary artery

  4. The Composite Twin Higgs scenario

    E-print Network

    Riccardo Barbieri; Davide Greco; Riccardo Rattazzi; Andrea Wulzer

    2015-03-25

    Based on an explicit model, we propose and discuss the generic features of a possible implementation of the Twin Higgs program in the context of composite Higgs models. We find that the Twin Higgs quadratic divergence cancellation argument can be uplifted to a genuine protection of the Higgs potential, based on symmetries and selection rules, but only under certain conditions which are not fulfilled in some of the existing models. We also find that a viable scenario, not plagued by a massless Twin Photon, can be obtained by not gauging the Twin Hypercharge and taking this as the only source of Twin Symmetry breaking at a very high scale.

  5. The Composite Twin Higgs scenario

    E-print Network

    Barbieri, Riccardo; Rattazzi, Riccardo; Wulzer, Andrea

    2015-01-01

    Based on an explicit model, we propose and discuss the generic features of a possible implementation of the Twin Higgs program in the context of composite Higgs models. We find that the Twin Higgs quadratic divergence cancellation argument can be uplifted to a genuine protection of the Higgs potential, based on symmetries and selection rules, but only under certain conditions which are not fulfilled in some of the existing models. We also find that a viable scenario, not plagued by a massless Twin Photon, can be obtained by not gauging the Twin Hypercharge and taking this as the only source of Twin Symmetry breaking at a very high scale.

  6. Twin Paradox and Causality

    E-print Network

    T. Grandou; J. L. Rubin

    2007-04-20

    After pointing out the historical avatar at the origin of a would be twin or clock paradox, we argue that, at least on a local scale, the (re-qualified) paradox is but a necessary consequence of the sole principle of causality.

  7. Identical Twins Raised Apart

    ERIC Educational Resources Information Center

    Farnsworth, David L.

    2015-01-01

    This article describes a bivariate data set that is interesting to students. Indeed, this particular data set, which involves twins and IQ, has sparked more student interest than any other set that I have presented. Specific uses of the data set are presented.

  8. Identical twin discordance for the Brachmann-de Lange syndrome revisited

    SciTech Connect

    Carakushansky, G.; Goncalves, M.R.; Kahn, E. [Universidade Federal do Rio de Janeiro (Brazil)] [and others] [Universidade Federal do Rio de Janeiro (Brazil); and others

    1996-06-14

    The only known twin pair evidently discordantly affected for the BDLS (Brachmann-de Lange syndrome) and who had been considered monozygotic (MZ) based on blood analysis remained a problem because biological zygosity determination needed further typing. In this report we review the clinical findings of this pair of twins at the age of 20. The use of DNA fingerprinting with three multilocus probes, F10, DNT24, and 33.6, allowed us to present evidence of monozygosity with a high degree of certainty. The significance of this confirmation of discordance in determining the cause of BDLS is discussed. Intensive comparative genomic studies of the discordant twin sisters may be useful to unravel the molecular genetics of this enigmatic pattern of malformation. 21 refs., 2 figs.

  9. Breast cancer after Hodgkin's disease in two sisters

    SciTech Connect

    Li, F.P.; Corkery, J.; Canellos, G.; Neitlich, H.W.

    1981-01-01

    Two sisters had breast cancer at four years and 11 years after diagnosis of Hodgkin's disease. The affected breast tissues had received several hundred rads of scatter radiation during treatment of the lymphoma. Family history revealed breast cancer in a third sister and five other women in the paternal line. Cytogenetic and HLA studies showed no markers of susceptibility to neoplasia. Development of second primary neoplasms of the breast in the two sisters may have resulted from interactions between genetic factors and carcinogenic effects of radiation exposure.

  10. Creating Sister Cities: An Exchange Across Hemispheres

    NASA Astrophysics Data System (ADS)

    Adams, M. T.; Cabezon, S. A.; Hardy, E.; Harrison, R. J.

    2008-06-01

    Sponsored by Associated Universities, Inc. (AUI) and the National Radio Astronomy Observatory (NRAO), this project creates a cultural and educational exchange program between communities in South and North America, linking San Pedro de Atacama in Chile and Magdalena, New Mexico in the United States. Both communities have similar demographics, are in relatively undeveloped regions of high-elevation desert, and are located near major international radio astronomy research facilities. The Atacama Large Millimeter/submillimeter Array (ALMA) is just 40 km east of San Pedro; the Very Large Array (VLA) is just 40 km west of Magdalena. In February 2007, the Mayor of San Pedro and two teachers visited Magdalena for two weeks; in July 2007 three teachers from Magdalena will visit San Pedro. These visits enable the communities to lay the foundation for a permanent, unique partnership. The teachers are sharing expertise and teaching methodologies for physics and astronomy. In addition to creating science education opportunities, this project offers students linguistic and cultural connections. The town of San Pedro, Chile, hosts nearly 100,000 tourists per year, and English language skills are highly valued by local students. Through exchanges enabled by email and distance conferencing, San Pedro and Magdalena students will improve English and Spanish language skills while teaching each other about science and their respective cultures. This poster describes the AUI/NRAO Sister Cities program, including the challenges of cross-cultural communication and the rewards of interpersonal exchanges between continents and cultures.

  11. Twin-to-twin transfusion syndrome: a case study.

    PubMed

    Giconi, Stephanie S

    2013-02-01

    Twin-to-twin transfusion syndrome (TTTS) is a disease that affects roughly 15% of monochorionic twins. Although TTTS is not extremely prevalent, the rate of mortality and morbidly approaches 100% without early detection and treatment. The following case study is a triplet pregnancy that included a set of monochorionic twins affected by TTTS. Typically, it is assumed that monochorionicity can identify the zygosity of twins, which was disproven in this case. Research indicates that there has been an increased rate of monochorionic twins with in vitro fertilization. There is great debate about the most appropriate treatment modality for TTTS. Perinatal treatment followed by neonatal management is the standard of care for TTTS. Implications for the neonatal nurse practitioner and care for the patients are discussed. PMID:23360857

  12. Twinning-like lattice reorientation without a crystallographic twinning plane

    PubMed Central

    Liu, Bo-Yu; Wang, Jian; Li, Bin; Lu, Lu; Zhang, Xi-Yan; Shan, Zhi-Wei; Li, Ju; Jia, Chun-Lin; Sun, Jun; Ma, Evan

    2014-01-01

    Twinning on the plane is a common mode of plastic deformation for hexagonal-close-packed metals. Here we report, by monitoring the deformation of submicron-sized single-crystal magnesium compressed normal to its prismatic plane with transmission electron microscopy, the reorientation of the parent lattice to a ‘twin’ lattice, producing an orientational relationship akin to that of the conventional twinning, but without a crystallographic mirror plane, and giving plastic strain that is not simple shear. Aberration-corrected transmission electron microscopy observations reveal that the boundary between the parent lattice and the ‘twin’ lattice is composed predominantly of semicoherent basal/prismatic interfaces instead of the twinning plane. The migration of this boundary is dominated by the movement of these interfaces undergoing basal/prismatic transformation via local rearrangements of atoms. This newly discovered deformation mode by boundary motion mimics conventional deformation twinning but is distinct from the latter and, as such, broadens the known mechanisms of plasticity. PMID:24522756

  13. Healthy Diet

    NSDL National Science Digital Library

    Mrs. Parker

    2009-09-28

    This project will explain the importance of a balanced diet as well as learn nutrition facts to help them apply a healthy diet in their everyday lives Eating good foods is very important to living a healthy life. Click on 'food groups' pyramid below and learn about what types of food should be in your daily diet. Food groups 1. What makes a certain food healthy? 2. Do you eat the foods from the pyramid on a regular ...

  14. Eating Healthy

    NSDL National Science Digital Library

    Ms. Kellersberger

    2011-12-12

    Learn about different healthy diets and exercises that can help your body achieve mental and physical wellness. It's time to learn about what we can do to help us stay healthy and fit! Explore these following websites in order to learn more about healthy diets, good nutrition, and great exercises: Dining Decisions Nutrients Your Body Needs Pyramid Blast Off Now that you've finished exploring these resources, answer the following questions: 1. Think about you're average daily ...

  15. Healthy Eating

    NSDL National Science Digital Library

    Sara Adle

    2011-08-05

    Learn about different healthy diets and exercises that can help your body achieve mental and physical wellness. It's time to learn about what we can do to help us stay healthy and fit! Explore these following websites in order to learn more about healthy diets, good nutrition, and great exercises: Dining Decisions Nutrients Your Body Needs Pyramid Blast Off Now that you've finished exploring these resources, answer the following questions: 1. Think about you're average daily ...

  16. Angioarchitecture of monochorionic placentas in relation to the twin-twin transfusion syndrome

    Microsoft Academic Search

    Rekha Bajoria; Jonathan Wigglesworth; Nicholas M. Fisk

    1995-01-01

    OBJECTIVE: Twin-twin transfusion syndrome in the midtrimester is associated with a perinatal mortality rate exceeding 80%. Although attributed to intertwin transfusion along vascular anastomoses, these occur in all monochorial placentas, not just the 10% with twin-twin transfusion syndrome. We compared fetoplacental angioarchitecture in monochorionic twin placentas with and without twin-twin transfusion syndrome.STUDY DESIGN: The fetoplacental circulations of both twins in

  17. Decrease in grief intensity for deceased twin and non-twin relatives: an evolutionary perspective

    Microsoft Academic Search

    Nancy L. Segal; Sarah L. Ream

    1998-01-01

    Based on evolutionary reasoning it was hypothesized that: 1.(1) dizygotic (DZ) twins would show greater reduction in grief intensity than monozygotic (MZ) twins for their deceased co-twins,2.(2) female twins would show less reduction in grief intensity than male twins for their deceased co-twins, and3.(3) twins would show less reduction in grief intensity for deceased co-twins than for other deceased relatives.

  18. Downward melt drag twin roll caster

    Microsoft Academic Search

    T. Haga; K. Takahashi

    2004-01-01

    A downward melt drag twin roll caster was devised as a base caster for a composite strip caster. A clad strip and a wire-inserted strip can be cast using the downward melt drag twin roll caster. The downward melt drag twin roll caster is one of the horizontal types twin roll caster. In the downward melt drag twin roll caster,

  19. A Quantum Twin Paradox

    E-print Network

    Doron ludwin

    2011-02-09

    The Classical Twin Paradox is widely dealt in literature and neatly resolved. In addition, it is also well known that, when looking at two systems which are boosted relative to each other, the concept of the simultaneous effect of a quantum measurement in space-time causes some discrepancies in the cause-effect behavior. However, these discrepancies have been thought not to cause any apparent paradox except for violating the Free-Will postulate. In this paper we suggest that using the local t axis, all over space, as the axis in which the quantum measurement is thought to be simultaneous, we do reach a kind of true "Twin Paradox". The resolution of this paradox requires the introduction of a global proper time into a covariant quantum theory.

  20. Challenges of Twin Pregnancy

    PubMed Central

    Wilson, Lynn M.; Hose, Patricia M.

    1991-01-01

    Family physicians have an important role in the diagnosis and management of twin pregnancies. Optimal antepartum management begins with early detection. Provision of patient education about the risks of the pregnancy is important. Intrapartum management is dependent on gestation age, placentation, fetal presentation, and fetal well-being. Anticipatory guidance and ongoing support should be provided for postpartum issues, such as breast-feeding and family adjustment. PMID:21229108

  1. Linking Chromosome Duplication and Segregation via Sister Chromatid Cohesion

    PubMed Central

    Leman, Adam R.; Noguchi, Eishi

    2014-01-01

    DNA replication during S phase generates two identical copies of each chromosome. Each chromosome is destined for a daughter cell, but each daughter must receive one and only one copy of each chromosome. To ensure accurate chromosome segregation, eukaryotic cells are equipped with a mechanism to pair the chromosomes during chromosome duplication and hold the pairs until a bi-oriented mitotic spindle is formed and the pairs are pulled apart. This mechanism is known as sister chromatid cohesion, and its actions span the entire cell cycle. During G1, before DNA is copied during S phase, proteins termed cohesins are loaded onto DNA. Paired chromosomes are held together through G2 phase, and finally the cohesins are dismantled during mitosis. The processes governing sister chromatid cohesion ensure that newly replicated sisters are held together from the moment they are generated to the metaphase–anaphase transition, when sisters separate. PMID:24906310

  2. 8. STREAMSIDE PATH NEAR MIDDLE OF THREE SISTERS FALLS, LOOKING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. STREAM-SIDE PATH NEAR MIDDLE OF THREE SISTERS FALLS, LOOKING WEST Photocopy of photograph, 1930s National Park Service, National Capital Region files - Dumbarton Oaks Park, Thirty-second & R Streets Northwest, Washington, District of Columbia, DC

  3. How-to-Do-It: Demonstrating Sister Chromatid Exchanges.

    ERIC Educational Resources Information Center

    Dye, Frank J.

    1988-01-01

    Outlines procedures for demonstrating and preparing a permanent slide of sister chromatid exchanges and recombination events between the two chromatids of a single chromosome. Provides the name of an additional resource for making preparations of exchanges. (RT)

  4. A Supersymmetric Twin Higgs

    E-print Network

    Spencer Chang; Lawrence J. Hall; Neal Weiner

    2006-04-07

    We present a supersymmetric realization of the twin Higgs mechanism, which cancels off all contributions to the Higgs mass generated above a scale f. Radiative corrections induced by the top quark sector lead to a breaking of the twin sector electroweak symmetry at a scale f ~ TeV. In our sector, below the scale f, these radiative corrections from the top quark are present but greatly weakened, naturally allowing a Z boson mass an order of magnitude below f, even with a top squark mass of order 1 TeV and a messenger scale near the Planck mass. A sufficient quartic interaction for our Higgs boson arises from the usual gauge contribution together with a radiative contribution from a heavy top squark. The mechanism requires the presence of an SU(2)-adjoint superfield, and can be simply unified. Naturalness in these theories is usually associated with light winos and sleptons, and is largely independent of the scale of the colored particles. The assumption of unification naturally predicts the existence of many exotic fields. The theory often has particles which may be stable on collider timescales, including an additional color octet superfield. In the limit that m_SUSY >> f, the mechanism yields a UV completion of the non-supersymmetric twin Higgs, but with the notable improvement of a tree-level quartic for the standard model Higgs. In this framework, a successful UV completion requires the existence of new charged fields well below the scale f.

  5. Partnership for Healthy Mouths Healthy Lives

    MedlinePLUS

    ... and disease. The Partnership for Healthy Mouths, Healthy Lives — a group of 36 organizations recognized as experts ... having healthy mouths for the rest of their lives. Partnership for Healthy Mouths, Healthy Lives 4350 N. ...

  6. Age at menarche in athletes and their mothers and sisters.

    PubMed

    Malina, R M; Ryan, R C; Bonci, C M

    1994-01-01

    Retrospective ages at menarche were obtained from 109 university athletes and their mothers, and from 77 sisters of the athletes. The athletes were participants in seven sports. Mean age (+/- SD) at menarche of the 109 athletes was identical with that of the total sample of 338 athletes from which they were drawn, 13.8 +/- 1.5 years. Mean age at menarche in the mothers was 13.4 +/- 1.7 years. When mothers were grouped as having been athletes (n = 52) or non-athletes (n = 57), menarcheal ages were, respectively, 13.7 +/- 1.8 years and 13.2 +/- 1.5 years. The mother-daughter correlation for age at menarche was 0.25. Corresponding correlations between athletes and mothers who were athletes and between athletes and mothers who were not athletes were 0.24 and 0.22, respectively. Ages at menarche in athletes who had sisters (n = 62) and their sisters (n = 77) were 14.0 +/- 1.4 and 13.6 +/- 1.6 years, respectively. The intraclass sister-sister correlation was 0.44. Familial resemblance in age at menarche in athletes, their mothers and sisters, is identical with that in the general population, and suggests that later menarche commonly observed in athletes is to a large extent familial. PMID:7985990

  7. Healthy Eating

    MedlinePLUS

    ... some tips for healthy eating. Buying and Preparing Food When the person with Alzheimer’s disease lives with you: • Buy healthy ... and whole-grain products. Be sure to buy foods that the person likes and can eat. • Give the person choices ...

  8. Healthy Lifestyle

    NSDL National Science Digital Library

    2012-08-10

    The Mayo Clinic has a terrific public outreach program, and this website provides a rich array of materials that deal with common and uncommon medical conditions. The Healthy Lifestyle area contains a range of tools and information for a healthy lifestyle. The sections include Healthy Lifestyle Topics, Life Stages, and Healthy Recipes. Within each section, visitors will find multimedia clips, expert answers, additional resources, and links to commonly asked questions. The Weight Loss area is particularly useful, as it contains over 25 different resources designed to help individuals address this increasingly common desire in a way that is balanced and meaningful. On a related note, the Healthy Recipes are a nice complement to these materials as they include suggestions for drinks, entrees, and side dishes.

  9. A Computational Discriminability Analysis on Twin Fingerprints

    NASA Astrophysics Data System (ADS)

    Liu, Yu; Srihari, Sargur N.

    Sharing similar genetic traits makes the investigation of twins an important study in forensics and biometrics. Fingerprints are one of the most commonly found types of forensic evidence. The similarity between twins’ prints is critical establish to the reliability of fingerprint identification. We present a quantitative analysis of the discriminability of twin fingerprints on a new data set (227 pairs of identical twins and fraternal twins) recently collected from a twin population using both level 1 and level 2 features. Although the patterns of minutiae among twins are more similar than in the general population, the similarity of fingerprints of twins is significantly different from that between genuine prints of the same finger. Twins fingerprints are discriminable with a 1.5%~1.7% higher EER than non-twins. And identical twins can be distinguished by examine fingerprint with a slightly higher error rate than fraternal twins.

  10. Twin Cities Metro Advanced Practice Center

    E-print Network

    Twin Cities Metro Advanced Practice Center In An Emergency: Equipment & Supplies List for Food Vietnamese.................................12 #12;Twin Cities Metro Advanced Practice Center Funded Offsite cold storage options (contact info for truck, warehouse) #12;Twin Cities Metro Advanced Practice

  11. When You Are a Twin or Triplet

    MedlinePLUS

    ... Body Works Main Page When You Are a Twin or Triplet KidsHealth > Kids > Feelings > My Home & Family > ... 7,000 triplet babies were born. Types of Twins There are two kinds of twins — fraternal and ...

  12. Verbal recall and recognition in twins discordant for schizophrenia

    PubMed Central

    van Erp, Theo G.M.; Therman, Sebastian; Pirkola, Tiia; Tuulio-Henriksson, Annamari; Glahn, David C.; Bachman, Peter; Huttunen, Matti O.; Lönnqvist, Jouko; Hietanen, Marja; Kaprio, Jaakko; Koskenvuo, Markku; Cannon, Tyrone D.

    2008-01-01

    The nature, neural underpinnings, and etiology of deficits in verbal declarative memory in patients with schizophrenia remain unclear. To examine the contributions of genes and environment to verbal recall and recognition performance in this disorder, the California Verbal Learning Test was administered to a large population-based Finnish twin sample, which included schizophrenic and schizoaffective patients, their non-ill monozygotic (MZ) and dizygotic (DZ) co-twins, and healthy control twins. Compared with controls, patients and their co-twins showed relatively greater performance deficits on free recall compared with recognition. Intra-pair differences between patients and their non-ill co-twins in hippocampal volume and memory performance were highly positively correlated. These findings are consistent with the view that genetic influences are associated with reduced verbal recall in schizophrenia, but that non-genetic influences further compromise these abnormalities in patients who manifest the full-blown schizophrenia phenotype, with this additional degree of disease-related declarative memory deficit mediated in part by hippocampal pathology. PMID:18442861

  13. Ankylosing spondylitis in monozygotic twins: studies on immunological parameters

    PubMed Central

    Hohler, T.; Hug, R.; Schneider, P.; Krummenauer, F.; Gripenberg-Lerche, C.; Granfors, K.; Marker-Hermann, E.

    1999-01-01

    OBJECTIVE—To examine immunological parameters that might explain disease discordance in monozygotic twin pairs with ankylosing spondylitis (AS).?METHODS—11 monozygotic twin pairs (nine with AS, two with undifferentiated spondyloarthropathy) were investigated. The peripheral T cell receptor V? repertoire was investigated using FACS analysis and 14 different V? antibodies. In addition serum samples were tested for antibodies to Klebsiella pneumoniae, Streptococcus pyogenes, Candida albicans, Proteus mirabilis, and Escherichia coli. Peripheral blood lymphocyte reactivity against a number of bacteria was investigated by interferon ? ELISPOT assays.?RESULTS—Twins suffering from AS showed cellular hyporeactivity against K pneumoniae, S pyogenes, C albicans in the ELISPOT assays compared with healthy twins. In contrast with the antibody data, where no significant differences were observed between the two groups, AS concordant twins showed the most pronounced differences in their V? repertoire on CD4+ and CD8+ lymphocytes.?CONCLUSIONS—Cellular hyporeactivity of peripheral blood cells to bacterial antigens might reflect defective T cell responses allowing bacterial antigens to persist in diseased patients. There are probably other environmental factors that influence disease concordance.?? PMID:10381488

  14. Concurrent evolution of ancient sister lakes and sister species: the freshwater gastropod genus Radix in lakes Ohrid and Prespa

    Microsoft Academic Search

    Christian Albrecht; Christian Wolff; Peter Glöer; Thomas Wilke

    2008-01-01

    Ancient sister lakes are considered to be ancient lakes lying in close geographic proximity, sharing a related origin and\\u000a significant time of co-existence, usually having hydrological connection as well as a balanced degree of faunal overlap and\\u000a distinctness. A paradigm for studying sister lake relationships are the ancient lakes Ohrid and Prespa in the Balkans, which\\u000a are characterized by high

  15. Concurrent evolution of ancient sister lakes and sister species: the freshwater gastropod genus Radix in lakes Ohrid and Prespa

    Microsoft Academic Search

    Christian Albrecht; Christian Wolff; Peter Glöer; Thomas Wilke

    Ancient sister lakes are considered to be ancient lakes lying in close geographic proximity, sharing a related origin and\\u000a significant time of coexistence, usually having hydrological connection as well as a balanced degree of faunal overlap and\\u000a distinctness. A paradigm for studying sister lake relationships are the ancient lakes Ohrid and Prespa in the Balkans, which\\u000a are characterized by high

  16. Tacit coordination in monozygotic twins, dizygotic twins and virtual twins: Effects and implications of genetic relatedness

    Microsoft Academic Search

    Nancy L. Segal; Shirley A. McGuire; Steven A. Miller; June Havlena

    2008-01-01

    Game theorists have long been interested in why some partners are more successful at achieving mutual goals than others. The present study was conducted to determine if tacit coordination (non-negotiated consensus) varies as a function of genetic relatedness between social partners. The sample included 7–13-year-old monozygotic (MZ) twin pairs (n=53), dizygotic (DZ) twin pairs (n=85) and virtual twin (VT) pairs

  17. The contribution of twins to the study of cognitive ageing and dementia: the Older Australian Twins Study.

    PubMed

    Sachdev, Perminder S; Lee, Teresa; Wen, Wei; Ames, David; Batouli, Amir H; Bowden, Jocelyn; Brodaty, Henry; Chong, Elizabeth; Crawford, John; Kang, Kristan; Mather, Karen; Lammel, Andrea; Slavin, Melissa J; Thalamuthu, Anbupalam; Trollor, Julian; Wright, Margie J

    2013-12-01

    The Older Australian Twins Study (OATS) is a major longitudinal study of twins, aged ? 65 years, to investigate genetic and environmental factors and their interactions in healthy brain ageing and neurocognitive disorders. The study collects psychiatric, neuropsychological, cardiovascular, metabolic, biochemical, neuroimaging, genomic and proteomic data, with two-yearly assessments, and is currently in its third wave. The initial cohort comprises 623 individuals (161 monozygotic and 124 dizygotic twin pairs; 1 MZ triplets; 27 single twins and 23 non-twin siblings), of whom 426 have had wave 2 assessment. A number of salient findings have emerged thus far which assist in the understanding of genetic contributions to cognitive functions such as processing speed, executive ability and episodic memory, and which support the brain reserve hypothesis. The heritability of brain structures, both cortical and subcortical, brain spectroscopic metabolites and markers of small vessel disease, such as lacunar infarction and white matter hyperintensities, have been examined and can inform future genetic investigations. Work on amyloid imaging and functional magnetic resonance imaging is proceeding and epigenetic studies are progressing. This internationally important study has the potential to inform research into cognitive ageing in the future, and offers an excellent resource for collaborative work. PMID:24423226

  18. ORIGINAL RESEARCH An Examination of the Representativeness Assumption for Twin

    E-print Network

    Larson, Christine L.

    ORIGINAL RESEARCH An Examination of the Representativeness Assumption for Twin Studies of Eating investigated whether the twin representativeness assumption (that results from twin research generalize, depression, and anxiety among young adult female twins versus singletons. Participants included 292 twins

  19. Healthy Eating

    NSDL National Science Digital Library

    Miss Sweet

    2012-05-03

    What do you know about healthy eating? Check out the sites below to learn what you should and should not be eating on a daily basis. Before we get started let's see what knowledge you have about healthy eating. What do you think are some of the most healthy foods for you? Do you like to eat these foods? Now look at the sites below and answer the following questions. Blast Off Dining Decisions Nutrients Your Body Neeeds What were some good food choices ...

  20. Occurrence of Different External Ear Deformities in Monozygotic Twins: Report of 2 Cases

    PubMed Central

    Hu, Jin-Tian; Liu, Tun; Qian, Jin; Zhang, Yong-Biao; Zhou, Xu

    2014-01-01

    Summary: Microtia is a spectrum of congenital deformities, which varies from barely discernable to anotia. Twinning is a well-known risk factor for congenital defects including external ear deformities. Monozygotic twins usually show identical appearances as well as congenital malformations. In special conditions as ear deformities, “mirror-image” may also occur. We report 2 cases of monozygotic twins with different ear deformities. The 8-year-old propositus with lobule type microtia and her identical female twin presented with facial symmetry. Patient A had sausage-type right microtia with absence of external auditory canal. The left external ear showed normal appearance. Patient B presented with left-sided preauricular skin tag and right-sided malformation of tragus with skin tag combined with hyperplasia of underlying cartilage. A granule-size skin tag was also noticed at crus of right helix. A 7-year-old male patient with right-sided conchal type microtia presented to an ear reconstruction center. The patient’s mother showed normal auricular appearance. Her monozygotic twin sister, whose son and daughter had normal ear appearance, was diagnosed with a leftsided lobule type microtia. PMID:25426389

  1. Twin Language or Phonological Disorder?

    ERIC Educational Resources Information Center

    Dodd, Barbara; McEvoy, Sandra

    1994-01-01

    The claim that multiple-birth children use "twin language" was investigated by describing and comparing the phonological characteristics of the speech of 19 sets of multiple birth children (aged 2-4) and by measuring multiple-birth children's understanding of their twins' or triplets' context-free speech. Results indicated that multiple birth…

  2. Transformation: From Twin to Individual

    ERIC Educational Resources Information Center

    Magagna, Jeanne

    2007-01-01

    This article explores some of the complexities of psychotherapy with an identical twin. The difficulty of developing in psychotherapy while so much of what is oneself is located in the other twin will also be explored. The use of the countertransference as a therapeutic method will be considered as the young person develops her unique, separate…

  3. Healthy Eyes

    MedlinePLUS

    ... of this page please turn Javascript on. Healthy Eyes Maintaining Your Vision Click for more information Taking ... have a comprehensive dilated eye exam. Who Performs Eye Exams? An eye care professional is either an ...

  4. Healthy ABCs

    MedlinePLUS

    ... Risk Healthy Eating Overweight Smoking High Blood Pressure Physical Activity High Blood Glucose My Health Advisor Tools To Know Your Risk Alert Day Diabetes Basics Home Symptoms Diagnosis Type 1 Type 2 Facts About Type 2 Enroll in the Living ...

  5. Protein requirements for sister telomere association in human cells

    PubMed Central

    Canudas, Silvia; Houghtaling, Benjamin R; Kim, Ju Youn; Dynek, Jasmin N; Chang, William G; Smith, Susan

    2007-01-01

    Previous studies in human cells indicate that sister telomeres have distinct requirements for their separation at mitosis. In cells depleted for tankyrase 1, a telomeric poly(ADP-ribose) polymerase, sister chromatid arms and centromeres separate normally, but telomeres remain associated and cells arrest in mitosis. Here, we use biochemical and genetic approaches to identify proteins that might mediate the persistent association at sister telomeres. We use immunoprecipitation analysis to show that the telomeric proteins, TRF1 (an acceptor of PARsylation by tankyrase 1) and TIN2 (a TRF1 binding partner) each bind to the SA1 ortholog of the cohesin Scc3 subunit. Sucrose gradient sedimentation shows that TRF1 cosediments with the SA1–cohesin complex. Depletion of the SA1 cohesin subunit or the telomeric proteins (TRF1 and TIN2) restores the normal resolution of sister telomeres in mitosis in tankyrase 1-depleted cells. Moreover, depletion of TRF1 and TIN2 or SA1 abrogates the requirement for tankyrase 1 in mitotic progression. Our studies indicate that sister telomere association in human cells is mediated by a novel association between a cohesin subunit and components of telomeric chromatin. PMID:17962804

  6. Twin Language Development: A Case Study of a Twin with a Cochlear Implant and a Twin with Typical Hearing

    ERIC Educational Resources Information Center

    Seung, HyeKyeung; Holmes, Alice; Colburn, Michelle

    2005-01-01

    This study was a longitudinal examination (21 month follow-up) of language development in a pair of fraternal twins. One twin received a cochlear implant at age 20 months secondary to sensorineural hearing loss. The other twin had normal hearing. Data were obtained every 6 months following her initial cochlear implant stimulation. Both twins

  7. Distinguishing identical twins by face recognition

    Microsoft Academic Search

    P. Jonathon Phillips; Patrick J. Flynn; Kevin W. Bowyer; Richard W. Vorder Bruegge; Patrick J. Grother; George W. Quinn; Matthew Pruitt

    2011-01-01

    The paper measures the ability of face recognition algorithms to distinguish between identical twin siblings. The experimental dataset consists of images taken of 126 pairs of identical twins (252 people) collected on the same day and 24 pairs of identical twins (48 people) with images collected one year apart. In terms of both the number of paris of twins and

  8. Twin and genetic effects on life events

    Microsoft Academic Search

    Christel M. Middeldorp; Danielle C. Cath; Jacqueline M. Vink; Dorret I. Boomsma

    2005-01-01

    Twin studies that examine the effect of specific environmental risk factors on psychiatric disorders assume that there are no differences in prevalences of these risk factors between twins and singletons. Violation of this assumption signifies that the results from twin studies might not generalize to singletons. Another assumption, not only underlying twin studies but also epidemiological research, is that life-events

  9. Twin Estimates for Slopes Humberto Munoz

    E-print Network

    Kearfott, R. Baker

    Twin Estimates for Slopes by Humberto Muâ?ťnoz R. Baker Kearfott, rbk@louisiana.edu Department author's Ph.D. dissertation Interval Slopes and Twin Slope Arithmetic in Nonsmooth Optimization, University of Louisiana at Lafayette, 2001. Twin Estimates for Slopes May 25, VC02--1 #12; What is Twin

  10. Best Practices for Twin Placement in School

    ERIC Educational Resources Information Center

    Lacina, Jan

    2012-01-01

    The children's book "Two Is for Twins" celebrates twins and illustrates the many "twos" in a child's world. The uniqueness of twos does not have to mean separate classrooms for twins in child development programs, preschool, or elementary school settings. With recent dramatic increases in the US twin population, how should educators address the…

  11. Article: CJB/249/2012 Twin Conics

    E-print Network

    Smith, Geoff

    1 Article: CJB/249/2012 Twin Conics Christopher Bradley Abstract: In a triangle ABC if lines' is also at G. We show that the Triplicate Ratio Circle is twinned to the O conic and we determine the twin its centre X. The twin conic, the Q' conic, is also obtained. The Triplicate Ratio Circle and the O

  12. The Genetic Relationship between Indentical Twins.

    ERIC Educational Resources Information Center

    Herman, Rosemary

    1984-01-01

    Reviews current research on a woman's chances of bearing twins and the genetic relationship, prenatal competition, and personality similarities between twins. In addition, the nature/nurture controversy is discussed in terms of evidence from studies of identical twins reared apart. Future studies are suggested to discover the ways twinning might…

  13. Pulmonary capillaritis in monozygotic twin boys.

    PubMed

    Kupfer, Oren; Ridall, Leslie A; Hoffman, Lindsey M; Dishop, Megan K; Soep, Jennifer B; Wagener, Jeffrey S; Fan, Leland L

    2013-11-01

    Pulmonary hemorrhage can be classified as either proximal or distal (alveolar). Causes of proximal hemorrhage include infection, foreign body aspiration, pulmonary embolus, trauma, vascular malformation, and pulmonary hypertension. Causes of distal or diffuse alveolar hemorrhage are divided by the histologic presence or absence of capillaritis, which is characterized by inflammation of the alveolar interstitium and pulmonary capillary structure. Pulmonary capillaritis is a rare event in children and is associated with higher morbidity and mortality than diffuse alveolar hemorrhage without capillaritis. This is a report of 17-month-old previously healthy monozygotic twins presenting simultaneously with diffuse alveolar hemorrhage, pulmonary capillaritis, and an otherwise negative serologic workup. This suggests a role of genetic predisposition in this rare disease. PMID:24127476

  14. Twin methodology in epigenetic studies.

    PubMed

    Tan, Qihua; Christiansen, Lene; von Bornemann Hjelmborg, Jacob; Christensen, Kaare

    2015-01-01

    Since the final decades of the last century, twin studies have made a remarkable contribution to the genetics of human complex traits and diseases. With the recent rapid development in modern biotechnology of high-throughput genetic and genomic analyses, twin modelling is expanding from analysis of diseases to molecular phenotypes in functional genomics especially in epigenetics, a thriving field of research that concerns the environmental regulation of gene expression through DNA methylation, histone modification, microRNA and long non-coding RNA expression, etc. The application of the twin method to molecular phenotypes offers new opportunities to study the genetic (nature) and environmental (nurture) contributions to epigenetic regulation of gene activity during developmental, ageing and disease processes. Besides the classical twin model, the case co-twin design using identical twins discordant for a trait or disease is becoming a popular and powerful design for epigenome-wide association study in linking environmental exposure to differential epigenetic regulation and to disease status while controlling for individual genetic make-up. It can be expected that novel uses of twin methods in epigenetic studies are going to help with efficiently unravelling the genetic and environmental basis of epigenomics in human complex diseases. PMID:25568460

  15. Catholic sister nurses in Selma, Alabama, 1940-1972.

    PubMed

    Wall, Barbra Mann

    2009-01-01

    This study analyzes the activities of religious sister nurses as they confronted racism in the American South from 1940 to 1972. Selma was chosen as a case study because, in the 1960s, events in that southern town marked a turning point in the civil rights movement in the United States. This is a story about the workings of gender, race, religion, and nursing. The sisters' work demonstrates how an analysis of race in nursing history is incomplete without an understanding of the roles that a number of Catholic religious women took in reaching out to African Americans in the Deep South. PMID:19218843

  16. Catholic Sister Nurses in Selma, Alabama, 1940–1972

    PubMed Central

    Wall, Barbra Mann

    2009-01-01

    This study analyzes the activities of religious sister nurses as they confronted racism in the American South from 1940 to 1972. Selma was chosen as a case study because, in the 1960s, events in that southern town marked a turning point in the civil rights movement in the United States. This is a story about the workings of gender, race, religion, and nursing. The sisters’ work demonstrates how an analysis of race in nursing history is incomplete without an understanding of the roles that a number of Catholic religious women took in reaching out to African Americans in the Deep South. PMID:19218843

  17. Healthy Eating

    NSDL National Science Digital Library

    BRobison

    2010-12-03

    This Project will help you to discover how you're eating, and how that affects your life. You will also use the tools provided to help make healthy eating choices. First, Calculate your Body Mass Index using the BMI Calculator. Then, after exploring the website, answer these questions: 1) What exactly is the BMI? 2) What are two limitations of the BMI Calculator? 3) What is a healthy BMI for YOU (age group height? 4) List 7 other risk factors that can contribute to heart ...

  18. Failure of vincristine induce twinning

    NASA Technical Reports Server (NTRS)

    Binder, M.

    1984-01-01

    Mammalian ova do not contain axes of symmetry from which are derived embryonic axes of symmetry. Mammalian axis determination is an early embryologic event occurring at about the time that monozygous twinning in mice. (Kaufma MH & O'Shea KS, 1978, Nature 276:707) and an attempt was made to reproduce their work in several strains of mice. Over 3200 embryos were examined without any twins being found. To rule out the possibility that vincristine caused twinning plus some lethal malformation (with subsequent resorption of the embryo) the embryos were examined 36-60 hours after vincristine treatment.

  19. Mechanism of slip and twinning

    NASA Technical Reports Server (NTRS)

    Rastani, Mansur

    1992-01-01

    The objectives are to: (1) demonstrate the mechanisms of deformation in body centered cubic (BCC), face centered cubic (FCC), and hexagonal close-packed (HCP)-structure metals and alloys and in some ceramics as well; (2) examine the deformed microstructures (slip lines and twin boundaries) in different grains of metallic and ceramic specimens; and (3) study visually the deformed macrostructure (slip and twin bands) of metals and alloys. Some of the topics covered include: deformation behavior of materials, mechanisms of plastic deformation, slip bands, twin bands, ductile failure, intergranular fracture, shear failure, slip planes, crystal deformation, and dislocations in ceramics.

  20. 184. Photocopy of drawing (taken from right corner of Twin ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    184. Photocopy of drawing (taken from right corner of Twin Falls Canal Company drawing #7017, located in Twin Falls Canal Company office, Twin Falls, Idaho). ORIGINAL 1900 SEGREGATION DAM PLAN, TWIN FALLS COUNTY, MILNER, IDAHO. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  1. Twinning-like lattice reorientation without a crystallographic twinning plane

    E-print Network

    Liu, Bo-Yu

    Twinning on the {10[bar over 1]2} plane is a common mode of plastic deformation for hexagonal-close-packed metals. Here we report, by monitoring the deformation of submicron-sized single-crystal magnesium compressed normal ...

  2. Geologic map of Three Sisters volcanic cluster, Cascade Range, Oregon

    USGS Publications Warehouse

    Hildreth, Wes; Fierstein, Judy; Calvert, Andrew T.

    2012-01-01

    The cluster of glaciated stratovolcanoes called the Three Sisters—South Sister, Middle Sister, and North Sister—forms a spectacular 20-km-long reach along the crest of the Cascade Range in Oregon. The three eponymous stratocones, though contiguous and conventionally lumped sororally, could hardly display less family resemblance. North Sister (10,085 ft), a monotonously mafic edifice at least as old as 120 ka, is a glacially ravaged stratocone that consists of hundreds of thin rubbly lava flows and intercalated falls that dip radially and steeply; remnants of two thick lava flows cap its summit. Middle Sister (10,047 ft), an andesite-basalt-dacite cone built between 48 and 14 ka, is capped by a thick stack of radially dipping, dark-gray, thin mafic lava flows; asymmetrically glaciated, its nearly intact west flank contrasts sharply with its steep east face. Snow and ice-filled South Sister is a bimodal rhyolitic-intermediate edifice that was constructed between 50 ka and 2 ka; its crater (rim at 10,358 ft) was created between 30 and 22 ka, during the most recent of several explosive summit eruptions; the thin oxidized agglutinate that mantles its current crater rim protects a 150-m-thick pyroclastic sequence that helped fill a much larger crater. For each of the three, the eruptive volume is likely to have been in the range of 15 to 25 kmł, but such estimates are fairly uncertain, owing to glacial erosion. The map area consists exclusively of Quaternary volcanic rocks and derivative surficial deposits. Although most of the area has been modified by glaciation, the volcanoes are young enough that the landforms remain largely constructional. Furthermore, twelve of the 145 eruptive units on the map are postglacial, younger than the deglaciation that was underway by about 17 ka. The most recent eruptions were of rhyolite near South Sister, about 2,000 years ago, and of mafic magma near McKenzie Pass, about 1,500 years ago. As observed by trailblazing volcanologist, Howel Williams, "For magnificence of glacial scenery, for wealth of recent lavas, and for graphic examples of dissected volcanoes, no part of this range surpasses the area embracing the Sisters and McKenzie Pass." Scientific and journalistic interest in the Three Sisters volcanic cluster was aroused a few years ago when ongoing uplift centered about 5 km west of South Sister was identified, first recognized by satellite imagery in 2001. Subsequent geodetic measurements and continuing satellite imagery analysis confirmed 3 to 4 cm/yr uplift during the interval from 1997 to 2004; the uplift has been modelled as inflation thought to be caused by an intracrustal intrusion, largely aseismic and plausibly involving mafic magma.

  3. Healthy Learning.

    ERIC Educational Resources Information Center

    Kennedy, Mike

    2003-01-01

    Offers ten suggestions for schools and universities to help maintain a healthy indoor environment: proper flooring, sanitary washrooms, consistent maintenance, indoor air quality, preventing mold, daylighting, good acoustics, avoiding volatile organic compounds (VOCs), ergonomic furniture, and well-maintained roofs. (EV)

  4. Reticular Erythematous Mucinosis Occurring in a Brother and Sister

    Microsoft Academic Search

    Ruggero Caputo; Angelo V. Marzano; Athanasia Tourlaki; Maurizio Marchini

    2006-01-01

    Reticular erythematous mucinosis (REM) is a rare, primary cutaneous mucinosis clinically characterized by a persistent reticular erythema on the mid chest and mid-upper back, and histologically by a mononuclear cell infiltrate and deposits of mucin in the dermis. To our knowledge, the present report of REM occurring in a Caucasian man and his sister is the first reported case of

  5. Sister Chromatid Cohesion and Aneuploidy Erwan Watrin* and Claude Prigent*

    E-print Network

    Paris-Sud XI, Université de

    molecules are held together from their synthesis during S-phase until their separation in mitosis during mitosis (for review, see Nasmyth, 2001). Indeed, in early mitosis, cohesion between sister required for the proper distribution of replicated genomes during mitosis, but is also essential

  6. Preparation and Staining of Mammal Cells to View Sister Chromatids

    NSDL National Science Digital Library

    BEGIN:VCARD VERSION:2.1 FN:Charles E. Geach N:E. Geach; Charles ORG:Technology & Information Systems REV:2005-04-08 END:VCARD

    1994-07-30

    This activity was developed in the laboratory of Dr. Pablo Arenaz at the University of Texas at El Paso during a summer teacher research fellowship program sponsored by the American Society For Cell Biology. This protocol allows you to see chromatids in mammal tissue. The protocol below was used to observe sister chromatid exchanges in Chinese Hamster Ovary Cells (Cell line AA8).

  7. Newly discovered sister lineage sheds light on early ant evolution

    E-print Network

    Villemant, Claire

    Newly discovered sister lineage sheds light on early ant evolution Christian Rabeling§ , Jeremy M studies, however, led to contradicting views of early ant evolution, in part because of high levels a new subfamily, the Martialinae, and discuss the implications of this discovery for the early evolution

  8. 7. STREAMSIDE PATH BETWEEN THREE BRIDGE FALLS AND THREE SISTERS ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. STREAM-SIDE PATH BETWEEN THREE BRIDGE FALLS AND THREE SISTERS FALLS, LOOKING WEST Photocopy of photograph, 1930s National Park Service, National Capital Region files - Dumbarton Oaks Park, Thirty-second & R Streets Northwest, Washington, District of Columbia, DC

  9. Mainstreaming: "I Simply Wanted My Sister to Be a Bridesmaid"

    ERIC Educational Resources Information Center

    Schleifer, Maxwell J., Ed.

    1978-01-01

    Presented is a case history centering around a family controversy over the inclusion of a cerebral palsied sister in a wedding ceremony, which illustrates some of the difficulties of adjusting to and accepting a physically handicapped child in the family. (DLS)

  10. Standard sister clade comparison fails when testing derived character States.

    PubMed

    Käfer, Jos; Mousset, Sylvain

    2014-07-01

    Comparing species richness in sister clades that differ in a character state is one of the ways to study factors influencing diversification. While most of its applications have focussed on traits that increase diversification, some have been used to study the association of a trait with lower species richness, e.g., the occurrence of dioecy in flowering plants. We show here, using simulations and an analytical model, that the null expectation of equal species richness that is generally used in sister clade comparisons is wrong in the case of a derived trait occurring independently from speciation: one should expect fewer species in the clade with the derived character state when there is no difference in diversification rates. This is due to the waiting time for the derived state to appear, which causes it to occur more often on longer branches. This has the important implication that the probability for a clade to possess the derived state depends on the tree geometry, and thus on species richness: species-poorer clades are more likely to possess the derived state. We develop a statistical test for sister clade comparisons to study the effect of a derived character state. Applying it to a data set of dioecious clades, we find that we cannot confirm earlier work that concluded that dioecy decreases diversification; on the contrary, it seems to be associated to higher species richness than expected. [angiosperms; dioecy; diversification; sister clades; species richness.]. PMID:24671619

  11. Jane Austen and Mary Shelley and Their Sisters

    Microsoft Academic Search

    Laura Dabundo

    2000-01-01

    Jane Austen and Mary Shelley and Their Sisters is an unprecedented work that provides an in-depth analysis of the work of women novelists from the Romantic age, a period that has long been exclusively designated as the province of canonized male poets. Although there are many volumes on the works of Austen and Shelley, this collection is the first to

  12. 26, Wednesday (Coe Room) Standing On My Sisters' Shoulders

    E-print Network

    Thomas, Andrew

    January 26, Wednesday (Coe Room) Standing On My Sisters' Shoulders (film and discussion) Civil of Multicultural Programs 9, Wednesday Until the Violence Stops: Twelve Years of Performing the Vagina Monologues Culture (film and discussion) 29, Tuesday SPARK: The Intergenerational Movement Against the Sexualization

  13. Hearing My Mother's Voice: A Study of Sisters and Mothers.

    ERIC Educational Resources Information Center

    Morris, Beverley

    There seems to be an assumption among many people that parents can mold the later adult personality of their offspring by manipulating their childhood upbringing. To tease out the variables in childrearing and to discover some of the sources of the childbearing practices of mothers in the 1980s, a study of sisters and their mothers (N=48) in the…

  14. Investigations into sister chromatid exchange in patients under cytostatic therapy

    Microsoft Academic Search

    Dagrun Dfiker

    1981-01-01

    In vivo sister chromatid exchange (SCE) determinations were carried out in patients with Psoriasis vulgaris under methotrexate therapy and patients with histologically verified bronchial carcinoma under cyclophosphamide, methotrexate or a combined chemotherapy. A pronounced increase in SCE rate was only found after cyclophosphamide treatment.

  15. Sister Chromatid Exchange in Patients Treated with Methotrexate for Psoriasis

    Microsoft Academic Search

    Rune Lindskov; Hans Christian Wulf; Gunhild Lange Wantzin; Erik Niebuhr

    1984-01-01

    Sister chromatid exchange (SCE), which is considered a sensitive method in evaluation of mutagenicity and may be an indicator of carcinogenicity, was determined in lymphocytes from 8 patients with severe psoriasis who underwent treatment with oral methotrexate (MTX). During the treatment period (median 118 days, range 50-298 days) a significant increase in SCE compared to the pretreatment value was found

  16. Observations of the Atomic Structure of Tensile and Compressive Twin Boundaries and Twin-Twin Interactions in Zirconium

    NASA Astrophysics Data System (ADS)

    Morrow, Benjamin M.; McCabe, Rodney J.; Cerreta, Ellen K.; Tomé, Carlos N.

    2014-12-01

    The boundary structures of twins in the hexagonal close-packed metal zirconium were studied. High-resolution transmission electron microscopy was used to characterize the boundary structure of (T1), (T2), and (C1) twins on the atomic level. Basal-prismatic (B-P) plane faceting is observed along the T1 twin boundaries, matching previous observations of T1 twins in magnesium. C1 twins are observed to form basal-pyramidal (B-Py) facets along otherwise perfect twin planes. T2 twins exhibit faceting that aligns prism planes with second-order pyramidal planes across the boundary (P-Py facets). As a function of the crystallography, T2 twins appear less likely to accommodate large deviations from perfect twin planes by P-Py faceting alone, and may rely on small dislocation-accommodated facets to achieve arbitrary boundary planes. The structure of these boundaries, specifically the modes by which faceting is permitted, has a direct impact on boundary mobility. In addition, the boundary structure of two C1 twins during a twin-twin interaction event is observed, and is compared to previous observations of tensile twin-twin interactions in magnesium.

  17. Needle twins and right-angled twins in minerals: Comparison between experiment and theory

    Microsoft Academic Search

    EKHARD K. H. SALJE; ANDREW BUCKLEY; GUSTAAF VAN TENDELOO; YOSHIHIRO ISHIBASHI; GORDON L. NORD JR

    Transformation twinning in minerals forms isolated twin walls, intersecting twin walls with corner junctions, and wedge-shaped twins as elements of hierarchical patterns. When cut perpendicular to the twin walls, the twins have characteristic shapes, right-angled and needle-shaped wall traces, which can be observed by transmission electron microscopy or by optical microscopy. Theoretical geometries of wall shapes recently derived for strain-

  18. 20 CFR 222.40 - When determinations of relationship are made for parent, grandchild, brother or sister.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...determinations of relationship are made for parent, grandchild, brother or sister. 222...FAMILY RELATIONSHIPS Relationship as Parent, Grandchild, Brother or Sister § 222...determinations of relationship are made for parent, grandchild, brother or sister....

  19. 20 CFR 222.40 - When determinations of relationship are made for parent, grandchild, brother or sister.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...determinations of relationship are made for parent, grandchild, brother or sister. 222...FAMILY RELATIONSHIPS Relationship as Parent, Grandchild, Brother or Sister § 222...determinations of relationship are made for parent, grandchild, brother or sister....

  20. 20 CFR 222.40 - When determinations of relationship are made for parent, grandchild, brother or sister.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...determinations of relationship are made for parent, grandchild, brother or sister. 222...FAMILY RELATIONSHIPS Relationship as Parent, Grandchild, Brother or Sister § 222...determinations of relationship are made for parent, grandchild, brother or sister....

  1. 20 CFR 222.40 - When determinations of relationship are made for parent, grandchild, brother or sister.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...determinations of relationship are made for parent, grandchild, brother or sister. 222...FAMILY RELATIONSHIPS Relationship as Parent, Grandchild, Brother or Sister § 222...determinations of relationship are made for parent, grandchild, brother or sister....

  2. 20 CFR 222.40 - When determinations of relationship are made for parent, grandchild, brother or sister.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...determinations of relationship are made for parent, grandchild, brother or sister. 222...FAMILY RELATIONSHIPS Relationship as Parent, Grandchild, Brother or Sister § 222...determinations of relationship are made for parent, grandchild, brother or sister....

  3. TISSUE-SPECIFIC SISTER CHROMATID EXCHANGE ANALYSES IN MUTAGEN-CARCINOGEN EXPOSED ANIMALS

    EPA Science Inventory

    The phenomenon of sister chromatid exchange (SCE) has been extensively reviewed. Sister chromatid exchanges are intrachromosomal events, wherein segments of DNA are reciprocally swapped between the chromatids. They are most easily studied with 5-bromodeoxyuridine (BrdU) dye metho...

  4. A general method to determine twinning elements

    PubMed Central

    Zhang, Yudong; Li, Zongbin; Esling, Claude; Muller, Jacques; Zhao, Xiang; Zuo, Liang

    2010-01-01

    The fundamental theory of crystal twinning has been long established, leading to a significant advance in understanding the nature of this physical phenomenon. However, there remains a substantial gap between the elaborate theory and the practical determination of twinning elements. This paper proposes a direct and simple method – valid for any crystal structure and based on the minimum shear criterion – to calculate various twinning elements from the experimentally determined twinning plane for Type I twins or the twinning direction for Type II twins. Without additional efforts, it is generally applicable to identify and predict possible twinning modes occurring in a variety of crystalline solids. Therefore, the present method is a promising tool to characterize twinning elements, especially for those materials with complex crystal structure. PMID:22477779

  5. Healthy Eating

    NSDL National Science Digital Library

    Ms. Ford

    2011-12-11

    Studenst will understand how a healthy diet and exercise can increase the likelihood of physical and mental wellness Read and discover what your body needs to function with the first two websites: Body Needs and Dining Decisions, Feel free to explore, discover how many servings you need of each food group and how to read nutrition labels. After you feel comfortable with the subject, go to the final ...

  6. Selective Termination for Fetal Anomaly\\/Genetic Disorder in Twin Pregnancy at 32+ Menstrual Weeks

    Microsoft Academic Search

    Warren M. Hern

    2004-01-01

    Objectives: To conduct a pilot study of 4 cases of selective termination of a single abnormal fetus in a dichorionic, diamniotic twin pregnancy advanced to 32 or more menstrual weeks of gestation. Study Design: This is a case series of 4 patients in highly unusual circumstances and treatment. Four healthy patients with desired pregnancies complicated by the presence of an

  7. Sisters, Brothers, and Delinquency: Evaluating Social Influence during Early and Middle Adolescence

    Microsoft Academic Search

    Cheryl Slomkowski; Richard Rende; Katherine J. Conger; Ronald L. Simons; Rand D. Conger

    2001-01-01

    Although a number of studies have shown that brothers are highly correlated for delinquent behavior, much less research has been conducted on sisters. We propose that sisters, like brothers, show notable similarity for delinquent behavior, and also promote each other's delinquency through direct interaction. We examined these issues in 164 brother and sister pairs studied over a 4-year period (from

  8. DNA Repair Capacity of Lymphoblastoid Cell Lines From Sisters Discordant for Breast Cancer

    Microsoft Academic Search

    David O. Kennedy; Meenakshi Agrawal; Jing Shen; Mary Beth Terry; Fang Fang Zhang; Ruby T. Senie; Grazyna Motykiewicz; Regina M. Santella

    2005-01-01

    Background: Interindividual differences in DNA repair ca- pacity may influence cancer risk. We tested whether the nucleotide excision repair pathway was deficient in breast cancer case patients by analyzing sister pairs. Methods: Cell lines derived from sisters discordant for breast cancer (137 families containing 158 case patients and 154 control sisters) were obtained from the Metropolitan New York Registry of

  9. The Twin Jet Nebula

    NASA Technical Reports Server (NTRS)

    1997-01-01

    M2-9 is a striking example of a 'butterfly' or a bipolar planetary nebula. Another more revealing name might be the 'Twin Jet Nebula.' If the nebula is sliced across the star, each side of it appears much like a pair of exhausts from jet engines. Indeed, because of the nebula's shape and the measured velocity of the gas, in excess of 200 miles per second, astronomers believe that the description as a super-super-sonic jet exhaust is quite apt. This is much the same process that takes place in a jet engine: The burning and expanding gases are deflected by the engine walls through a nozzle to form long, collimated jets of hot air at high speeds. M2-9 is 2,100 light-years away in the constellation Ophiucus. The observation was taken Aug. 2, 1997 by the Hubble telescope's Wide Field and Planetary Camera 2. In this image, neutral oxygen is shown in red, once-ionized nitrogen in green, and twice-ionized oxygen in blue.

  10. Twin Peak Higgs

    E-print Network

    Matti Heikinheimo; Antonio Racioppi; Martti Raidal; Christian Spethmann

    2013-10-03

    A broad class of models in which electroweak symmetry breaking originates from dynamics in a singlet dark sector, and is transferred to the Standard Model via the Higgs portal, predicts in general strongly suppressed Higgs boson mixing with a singlet scalar. In this work we point out that at present this class of models allows for the second phenomenologically acceptable solution with almost maximal mixing between the Higgs and the scalar singlet. This scenario predicts an almost degenerate twin peak Higgs signal which is presently indistinguishable from a single peak, due to the limited LHC mass resolution. Because of that, the LHC experiments measure inclusive Higgs rates that all must exactly agree with Standard Model predictions due to sum rules. We show that if the dark sector and Standard Model communicate only via the singlet messenger scalar that mixes with the Higgs, the spin independent direct detection cross section of dark matter is suppressed by the scalar mass degeneracy, explaining its non-observation so far.

  11. Horizontal transmission of a human rotavirus vaccine strain—A randomized, placebo-controlled study in twins

    Microsoft Academic Search

    Luis Rivera; Lourdes Mendez Peńa; Isabelle Stainier; Paul Gillard; Brigitte Cheuvart; Igor Smolenov; Eduardo Ortega-Barria; Htay Htay Han

    Transmission of excreted vaccine-derived infectious virus from vaccinated to unvaccinated individuals is possible within close contacts. This randomized (1:1), double-blind study evaluated the potential for transmission of human rotavirus vaccine strain, HRV (Rotarix™) from vaccine recipients to unvaccinated close contacts (twins). 100 pairs of healthy twins aged 6–14 weeks at the time of Dose 1 of HRV vaccine\\/placebo were enrolled

  12. Researches on the Twin Prime Problem

    E-print Network

    Zhang Baoshan

    2014-05-13

    Twin prime number problem is mainly the structure of the twin prime numbers and whether there are infinitely many prime twins group. In this paper, by constructing a special cluster number set(see formula(2.3)in the paper), proves that the number of set number of the first n columns set the intersection of the minimum number of q is decision of the prime twins (q, q+2), and the minimum number of series is divergent(see Theorem 2).The main rezults are Theorem 2,Theorem 3 and Theorem 4.Prime twins so thoroughly proved there must be infinitely many groups of twin prime conjecture.

  13. 128. COTTONWOOD CUT, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, IDAHO; ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    128. COTTONWOOD CUT, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, IDAHO; NORTH VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  14. 108. MURTAUGH LAKE HEADGATES, TWIN FALLS COUNTY, SOUTH OF MURTAUGH, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    108. MURTAUGH LAKE HEADGATES, TWIN FALLS COUNTY, SOUTH OF MURTAUGH, IDAHO; OVERALL VIEW SOUTH. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  15. 27. VIEW OF TWIN FALLS MAIN CANAL HEADGATE WITH CANAL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    27. VIEW OF TWIN FALLS MAIN CANAL HEADGATE WITH CANAL BRIDGE IN DISTANCE; LOOKING SOUTHWEST. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  16. 107. MURTAUGH LAKE, TWIN FALLS COUNTY, SOUTH OF MURTAUGH, IDAHO; ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    107. MURTAUGH LAKE, TWIN FALLS COUNTY, SOUTH OF MURTAUGH, IDAHO; WEST VIEW OF LAKE. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  17. 26. DETAIL OF HEADGATE HOIST MACHINERY, TWIN FALLS MAIN CANAL. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    26. DETAIL OF HEADGATE HOIST MACHINERY, TWIN FALLS MAIN CANAL. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  18. 127. COTTONWOOD CUT AREA, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    127. COTTONWOOD CUT AREA, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, IDAHO; NORTH VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  19. 30. VIEW OF TWIN FALLS MAIN CANAL FROM BRIDGE LOOKING ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    30. VIEW OF TWIN FALLS MAIN CANAL FROM BRIDGE LOOKING WEST DOWNSTREAM. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  20. 100. MURTAUGH LAKE HEADGATES, TWIN FALLS COUNTY, SOUTH OF MURTAUGH, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    100. MURTAUGH LAKE HEADGATES, TWIN FALLS COUNTY, SOUTH OF MURTAUGH, IDAHO; SOUTH VIEW OF HEADGATES. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  1. 125. COTTONWOOD CUT AREA, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    125. COTTONWOOD CUT AREA, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, IDAHO; SOUTH VIEW OF CANAL. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  2. 24. TWIN FALLS MAIN CANAL HEADWORKS, DOWNSTREAM LOOKING TOWARD THE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    24. TWIN FALLS MAIN CANAL HEADWORKS, DOWNSTREAM LOOKING TOWARD THE EAST. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  3. 32. VIEW OF TWIN FALLS MAIN CANAL FROM VICINITY OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    32. VIEW OF TWIN FALLS MAIN CANAL FROM VICINITY OF PROPOSED POWER CANAL, LOOKING UPSTREAM. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  4. 22. TWIN FALLS MAIN CANAL HEADWORKS WITH MILNER DAM IN ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    22. TWIN FALLS MAIN CANAL HEADWORKS WITH MILNER DAM IN DISTANCE; LOOKING EAST. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  5. 31. VIEW OF TWIN FALLS MAIN CANAL BRIDGE FROM DOWNSTREAM ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    31. VIEW OF TWIN FALLS MAIN CANAL BRIDGE FROM DOWNSTREAM LOOKING UPSTREAM. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  6. 23. TWIN FALLS MAIN CANAL HEADWORKS WITH MILNER DAM IN ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    23. TWIN FALLS MAIN CANAL HEADWORKS WITH MILNER DAM IN DISTANCE; LOOKING NORTHEAST. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  7. 29. VIEW OF TWIN FALLS MAIN CANAL BRIDGE FROM UPSTREAM ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    29. VIEW OF TWIN FALLS MAIN CANAL BRIDGE FROM UPSTREAM LOOKING DOWNSTREAM. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  8. Unrelated ART twins / Tribute: Dr Robert Derom / Twin research reviews: Transfusion syndrome; Discordant MZ-twin method / Matched talents: Tennis twins: (Mike and Bob Bryan; Sonchai and Sonchat Ratiwatana); Television twins: (Ellen and Lynda Kahn).

    PubMed

    Segal, Nancy L

    2009-12-01

    A unique case of artificially conceived twins is described. The infants involved are unrelated to one another, as well as to the mother who carried them. The question of whether these individuals meet scientific criteria for being twins is considered, as is the issue of whether their parents are really parents of twins. Next, the International Society for Twin Studies acknowledges the life and work of its late esteemed colleague, Dr Robert Derom. His professional accomplishments on behalf of twins and twin research will be remembered, as will his helpfulness and generosity to fellow investigators. This tribute to Dr Derom is followed by reviews of new research on the pathophysiology of the twin transfusion syndrome and the use of discordant MZ twins (co-twin control) in behavioral research. The final section provides a review of the athletic talents of two sets of MZ twin tennis players, and the creative skills of a set of MZ twin designers. PMID:19943729

  9. Plastic strain due to twinning in austenitic TWIP steels

    E-print Network

    Cambridge, University of

    Plastic strain due to twinning in austenitic TWIP steels B. Qin and H. K. D. H. Bhadeshia* Twinning induced plasticity steels are austenitic alloys in which mechanical twinning is a prominent deformation, Twinning, Twinning induced plasticity, Automobiles Introduction Mechanical twinning is a plastic

  10. 150. Photocopy of drawing (taken from Twin Falls Canal Company ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    150. Photocopy of drawing (taken from Twin Falls Canal Company Surveyor's Book #363, Page 42, entitled, 'Diversion Tunnels', located in Twin Falls Canal Company office, Twin Falls, Idaho). PLAN OF DIVERSION TUNNELS, MILNER DAM. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  11. 180. Photocopy of Photograph, Twin Falls Canal Company. E. Pettygro, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    180. Photocopy of Photograph, Twin Falls Canal Company. E. Pettygro, Photographer, date unknown. BLASTING TWIN FALLS CANAL, TWIN FALLS COUNTY; BLASTING COTTONWOOD AREA TO REPLACE FLUME BY RUNNING HIGH LINE THROUGH SOLID ROCK. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  12. Normal Personality Characteristics in Identical Twins Discordant for Schizophrenia

    Microsoft Academic Search

    David L. DiLalla; Irving I. Gottesman

    1995-01-01

    The authors examined normal personality characteristics of monozygotic (MZ) twins discordant for schizophrenia. Twenty pairs of discordant twins were analyzed; 11 pairs of MZ twins concordant for schizophrenia served as a comparison group. Personality was assessed using the Multidimensional Personality Questionnaire (MPQ; A. Tellegen, 1995). Among discordant twin pairs, twins with schizophrenia were more deviant than normal co-twins on all

  13. Impact of Twin-to-Twin Transfusion Syndrome, Preterm Birth, and Vision Loss on Development

    ERIC Educational Resources Information Center

    Celeste, Marie

    2005-01-01

    This study compared the developmental outcomes of twin boys (one who is blind and one who is sighted) who were born prematurely and diagnosed with twin-to-twin transfusion syndrome (TTTS) at age 24 months. The results indicate a disparity in the developmental outcomes of the twins. Although the medical risk factors that are associated with TTTS…

  14. Brief Report: Autistic Traits in Twins vs. Non-Twins--A Preliminary Study

    ERIC Educational Resources Information Center

    Ho, Alexander; Todd, Richard D.; Constantino, John N.

    2005-01-01

    Previous studies have suggested that among affected sib pairs with autism there is an increase in the frequency of twins over what would be expected in comparison to the prevalence of twins in the general population. In this study we sought to determine whether "sub-threshold" autistic traits were more pronounced in twins than in non-twins. The…

  15. Congenital tracheobronchial stenosis in monozygotic twins

    Microsoft Academic Search

    K. S. Wong; R. Lien; T. Y. Lin

    1998-01-01

      \\u000a \\u000a Conclusion This case report shows that tracheobronchial stenosis may present in monozygotic twins. The pattern of malformation in twins\\u000a differs from cases described previously.

  16. 49 CFR 372.221 - Twin Cities.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ...Transportation 5 2013-10-01 2013-10-01 false Twin Cities. 372.221 Section 372.221 Transportation...ZONES, AND TERMINAL AREAS Commercial Zones § 372.221 Twin Cities. For the purpose of determining commercial...

  17. The twin paradox on the photon sphere

    E-print Network

    Marek A. Abramowicz; Stanislaw Bajtlik; Wlodek Kluzniak

    2006-12-11

    We consider a new version of the twin paradox. The twins move along the same circular free photon path around the Schwarzschild center. In this case, despite their different velocities, all twins have the same non-zero acceleration. On the circular photon path, the symmetry between the twins situations is broken not by acceleration (as it is in the case of the classic twin paradox), but by the existence of an absolute standard of rest (timelike Killing vector). The twin with the higher velocity with respect to the standard of rest is younger on reunion. This closely resembles the case of periodic motions in compact (non-trivial topology) 3-D space recently considered in the context of the twin paradox by Barrow and Levin, except that there accelerations of all twins were equal to zero, and that in the case considered here, the 3-D space has trivial topology.

  18. 49 CFR 372.221 - Twin Cities.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ...Transportation 5 2010-10-01 2010-10-01 false Twin Cities. 372.221 Section 372.221 Transportation...ZONES, AND TERMINAL AREAS Commercial Zones § 372.221 Twin Cities. For the purpose of determining commercial...

  19. CONJOINED TWIN ADULT SHRIMP (DECAPODA: PENAEIDAE)

    E-print Network

    NOTES CONJOINED TWIN ADULT SHRIMP (DECAPODA: PENAEIDAE) A two-headed roughback shrimp by preservation. Antennules, anten- FIGURE I.-Conjoined twin Trackype1UUi'1U1 simi/is in diagrammatic lateral view

  20. 49 CFR 372.221 - Twin Cities.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ...Transportation 5 2014-10-01 2014-10-01 false Twin Cities. 372.221 Section 372.221 Transportation...ZONES, AND TERMINAL AREAS Commercial Zones § 372.221 Twin Cities. For the purpose of determining commercial...

  1. 49 CFR 372.221 - Twin Cities.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ...Transportation 5 2011-10-01 2011-10-01 false Twin Cities. 372.221 Section 372.221 Transportation...ZONES, AND TERMINAL AREAS Commercial Zones § 372.221 Twin Cities. For the purpose of determining commercial...

  2. 49 CFR 372.221 - Twin Cities.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ...Transportation 5 2012-10-01 2012-10-01 false Twin Cities. 372.221 Section 372.221 Transportation...ZONES, AND TERMINAL AREAS Commercial Zones § 372.221 Twin Cities. For the purpose of determining commercial...

  3. Pol kappa: A DNA Polymerase Required for Sister Chromatid Cohesion

    Microsoft Academic Search

    Zhenghe Wang; Irene B. Castańo; Alejandro De Las Peńas; Carrie Adams; Michael F. Christman

    2000-01-01

    Establishment of cohesion between sister chromatids is coupled to replication fork passage through an unknown mechanism. Here we report that TRF4, an evolutionarily conserved gene necessary for chromosome segregation, encodes a DNA polymerase with beta-polymerase-like properties. A double mutant in the redundant homologs, TRF4 and TRF5, is unable to complete S phase, whereas a trf4 single mutant completes a presumably

  4. The template choice decision in meiosis: is the sister important?

    Microsoft Academic Search

    Mónica Pradillo; Juan L. Santos

    Recombination between homologous chromosomes is crucial to ensure their proper segregation during meiosis. This is achieved\\u000a by regulating the choice of recombination template. In mitotic cells, double-strand break repair with the sister chromatid\\u000a appears to be preferred, whereas interhomolog recombination is favoured during meiosis. However, in the last year, several\\u000a studies in yeast have shown the importance of the meiotic

  5. Sister acts: coordinating DNA replication and cohesion establishment

    PubMed Central

    Sherwood, Rebecca; Takahashi, Tatsuro S.; Jallepalli, Prasad V.

    2010-01-01

    The ring-shaped cohesin complex links sister chromatids and plays crucial roles in homologous recombination and mitotic chromosome segregation. In cycling cells, cohesin's ability to generate cohesive linkages is restricted to S phase and depends on loading and establishment factors that are intimately connected to DNA replication. Here we review how cohesin is regulated by the replication machinery, as well as recent evidence that cohesin itself influences how chromosomes are replicated. PMID:21159813

  6. Factors involved in differential giemsa-staining of sister chromatids

    Microsoft Academic Search

    Keiko Goto; S. Maeda; Y. Kano; T. Sugiyama

    1978-01-01

    Microspectrophotometric evaluation of differentially stained sister chromatids made it possible to analyse precisely the factors involved in the Giemsa methods. The concentration of Hoechst 33258, pH of the mounting medium, temperature during UV-exposure and the quality (wavelength) of UV-light influenced the differential staining. Exposure of blacklight of 10-5 M Hoechst 33528-stained BrdU-labeled chromosome specimens mounted in McIlvaine buffer (pH 8.0)

  7. Photopromotion of sister chromatid exchanges by psoralen derivatives

    Microsoft Academic Search

    D. Martin Carter; Mary F. Lyons; Dorothy B. Windhorst

    1982-01-01

    Several derivatives of 8-methoxypsoralen and 4,5'8-trimethylpsoralen were compared with respect to their photopromotion of sister chromatid exchanges. Peripheral blood leukocytes from heparinized blood of human volunteers were cultivated for 24 h. Selected flasks received psoralens (6.5×10-8 M) and\\/or were irradiated (UV-A, 365 nm, 0.9 J\\/cm2). Bromodeoxyuridine (20 µg\\/ml) was added and flasks were further incubated for 48 h when colchicine

  8. A Little Twin Higgs Model

    SciTech Connect

    Goh, Hock-Seng; Goh, Hock-Seng; Krenke, Christopher A.

    2007-07-25

    We present a twin Higgs model based on left-right symmetry with a tree level quartic. This is made possible by extending the symmetry of the model to include two Z_2 parities, each of which is sufficient to protect the Higgs from getting a quadratically divergent mass squared. Although both parities are brokenexplicitly, the symmetries that protect the Higgs from getting a quadratically divergent mass are broken only collectively. The quadratic divergences of the Higgs mass are thus still protected at one loop. We find that the fine-tuning in this model is reduced substantially compared to the original left-right twin Higgs model. This mechanism can also be applied to the mirror twin Higgs model to get a significant reduction of the fine-tuning, while keeping the mirror photon massless.

  9. A Little Twin Higgs Model

    E-print Network

    Hock-Seng Goh; Christopher A. Krenke

    2007-07-25

    We present a twin Higgs model based on left-right symmetry with a tree level quartic. This is made possible by extending the symmetry of the model to include two Z_2 parities, each of which is sufficient to protect the Higgs from getting a quadratically divergent mass squared. Although both parities are broken explicitly, the symmetries that protect the Higgs from getting a quadratically divergent mass are broken only collectively. The quadratic divergences of the Higgs mass are thus still protected at one loop. We find that the fine tuning in this model is reduced substantially compared to the original left-right twin Higgs model. This mechanism can also be applied to the mirror twin Higgs model to get a significant reduction of the fine tuning, while keeping the mirror photon massless.

  10. Southall Black Sisters. Hannana Siddiqui speaks to Rasna Warah.

    PubMed

    Warah, R

    1994-01-01

    Southall Black Sisters, an organization for Asian and Afro-Caribbean women in Great Britain, was established in 1979 at the height of anti-racist protests to address the otherwise neglected issue of women's oppression. The group has campaigned against discriminatory immigration laws, illegal virginity tests at Heathrow airport, domestic violence, and other issues of particular concern to British Asian women. Women who migrate to England for an arranged marriage must remain with their husband at least 1 year or face deportation and denial of any public assistance, placing them at risk of unreported domestic violence. Southall Black Sisters has attempted to raise the public consciousness about domestic violence as a criminal issue and garner support for Asian women who leave abusive husbands. However, no support has been forthcoming from the anti-racist movement, which fears that publicity on domestic violence will create a racist backlash against Asian men. More support has been available for the group's campaign to protect battered women who kill their husbands by removing from the law on provocation the need for an immediate response. Another campaign has involved protests against "bounty hunters" hired by Asian families to return girls who have escaped from arranged marriages in their home country or sexual abuse within their family. Southall Black Sisters attributes many of the problems faced by its clients to a rise in religious fundamentalism and Muslim attempts to reverse the gains of the feminist movement. PMID:12287625

  11. Broad phylogenomic sampling and the sister lineage of land plants.

    PubMed

    Timme, Ruth E; Bachvaroff, Tsvetan R; Delwiche, Charles F

    2012-01-01

    The tremendous diversity of land plants all descended from a single charophyte green alga that colonized the land somewhere between 430 and 470 million years ago. Six orders of charophyte green algae, in addition to embryophytes, comprise the Streptophyta s.l. Previous studies have focused on reconstructing the phylogeny of organisms tied to this key colonization event, but wildly conflicting results have sparked a contentious debate over which lineage gave rise to land plants. The dominant view has been that 'stoneworts,' or Charales, are the sister lineage, but an alternative hypothesis supports the Zygnematales (often referred to as "pond scum") as the sister lineage. In this paper, we provide a well-supported, 160-nuclear-gene phylogenomic analysis supporting the Zygnematales as the closest living relative to land plants. Our study makes two key contributions to the field: 1) the use of an unbiased method to collect a large set of orthologs from deeply diverging species and 2) the use of these data in determining the sister lineage to land plants. We anticipate this updated phylogeny not only will hugely impact lesson plans in introductory biology courses, but also will provide a solid phylogenetic tree for future green-lineage research, whether it be related to plants or green algae. PMID:22253761

  12. Broad Phylogenomic Sampling and the Sister Lineage of Land Plants

    PubMed Central

    Timme, Ruth E.; Bachvaroff, Tsvetan R.; Delwiche, Charles F.

    2012-01-01

    The tremendous diversity of land plants all descended from a single charophyte green alga that colonized the land somewhere between 430 and 470 million years ago. Six orders of charophyte green algae, in addition to embryophytes, comprise the Streptophyta s.l. Previous studies have focused on reconstructing the phylogeny of organisms tied to this key colonization event, but wildly conflicting results have sparked a contentious debate over which lineage gave rise to land plants. The dominant view has been that ‘stoneworts,’ or Charales, are the sister lineage, but an alternative hypothesis supports the Zygnematales (often referred to as “pond scum”) as the sister lineage. In this paper, we provide a well-supported, 160-nuclear-gene phylogenomic analysis supporting the Zygnematales as the closest living relative to land plants. Our study makes two key contributions to the field: 1) the use of an unbiased method to collect a large set of orthologs from deeply diverging species and 2) the use of these data in determining the sister lineage to land plants. We anticipate this updated phylogeny not only will hugely impact lesson plans in introductory biology courses, but also will provide a solid phylogenetic tree for future green-lineage research, whether it be related to plants or green algae. PMID:22253761

  13. Simulations of Stress-induced Twinning and De-twinning: a Phase-field Model

    SciTech Connect

    Hu, Shenyang Y.; Henager, Charles H.; Chen , L.Q.

    2010-11-01

    Twinning in metals is a major plastic deformation mode. Here we present a phase-field model to describe twin formation and evolution in a polycrystalline FCC metal under loading and unloading. The model assumes that the twin nucleation, growth and de-twinning is a process of partial dislocation nucleation and slip on successive habit planes. Stacking fault energies, energy pathways ( surfaces), critical shear stresses for the formation of stacking faults, and dislocation core energies are used to construct the thermodynamic model. The simulation results demonstrate that the model is able to predict the nucleation of twins and partial dislocations as well as the morphology of the twin nuclei, and reasonably to describe twin growth and interaction. The twin microstructures at grain boundaries are in agreement with experimental observation . It is found that de-twinning occurs during unloading in performed simulations. However, strong dependence of twin structure evolution on loading history is observed.

  14. Twins reunited: scientific and personal perspectives/twin research studies: multiple birth effects on IQ and body size; life style, muscles, and metabolism; monochorionic dizygotic twin with blood chimerism; amniocentesis for twins/twins in the media: identical doctors; freedom fighter for twins; twin scholarships; Auguste and Jean-Felix Piccard; twins born apart.

    PubMed

    Segal, Nancy L; Mulligan, Christy A

    2014-04-01

    A reunion of 38-year-old female monozygotic twins took place in Daegu, South Korea, on January 14, 2014. Scientific and personal perspectives on this extraordinary event are provided. A review of timely twin research follows, covering the effects of multiple births on IQ and body size, lifestyle and physical fitness associations, a rare case of a dizygotic twin with blood chimerism and definitional issues surrounding amniocentesis-related loss in multiple birth pregnancies. Interesting and informative mention of twins in the media includes twin doctors, a twin freedom fighter, the availability of college scholarships for twins, a new book about the Piccard family (two of whose members were twins), and co-twins born before and after the new year. A follow-up to a previous mention of identical twin biatheletes is also provided. PMID:24589452

  15. Maternal Hypomethylation of KvDMR in a Monozygotic Male Twin Pair Discordant for Beckwith-Wiedemann Syndrome

    PubMed Central

    Elalaoui, S.C.; Garin, I.; Sefiani, A.; Perez de Nanclares, G.

    2014-01-01

    Beckwith-Wiedemann syndrome (BWS; OMIM 130650) is a heterogeneous overgrowth syndrome characterized by visceromegaly, macroglossia, tumor predisposition, and other congenital abnormalities. BWS is usually associated with abnormalities of chromosome 11p15, including (epi)genetic changes, paternal disomy and point mutations. A number of identical twin pairs, mostly female, have been reported to be clinically discordant for BWS. Studies of monozygotic twins discordant for BWS provide more information about failure in the DNA methylation maintenance machinery during very early embryonic development. Here, we report a case of monozygotic male twins discordant for BWS phenotype. Methylation analysis of the 2 imprinted domains at 11p15.5 (H19DMR and KvDMR) was performed by methylation-specific MLPA and pyrosequencing of DNA extracted from peripheral blood and buccal swabs of both twins. Hypomethylation at KvDMR was identified in both cell types of the affected twin, whereas his healthy brother presented hypomethylation only in blood cells and a normal methylation profile in buccal swab. For diagnostic purposes, it is important to remember that twins can share fetal circulation and possibly share hematopoietic stem cells early in development; therefore, the affected and unaffected twins can share an epigenotype that will resemble partial hypomethylation. If a patient is a twin, it is valuable to obtain a sample from a tissue other than blood. PMID:24550765

  16. Phospholipids and insulin resistance in psychosis: a lipidomics study of twin pairs discordant for schizophrenia

    PubMed Central

    2012-01-01

    Background Several theories have been proposed to conceptualize the pathological processes inherent to schizophrenia. The 'prostaglandin deficiency' hypothesis postulates that defective enzyme systems converting essential fatty acids to prostaglandins lead to diminished levels of prostaglandins, which in turn affect synaptic transmission. Methods Here we sought to determine the lipidomic profiles associated with schizophrenia in twin pairs discordant for schizophrenia as well as unaffected twin pairs. The study included serum samples from 19 twin pairs discordant for schizophrenia (mean age 51 ± 10 years; 7 monozygotic pairs; 13 female pairs) and 34 age and gender matched healthy twins as controls. Neurocognitive assessment data and gray matter density measurements taken from high-resolution magnetic resonance images were also obtained. A lipidomics platform using ultra performance liquid chromatography coupled to time-of-flight mass spectrometry was applied for the analysis of serum samples. Results In comparison to their healthy co-twins, the patients had elevated triglycerides and were more insulin resistant. They had diminished lysophosphatidylcholine levels, which associated with decreased cognitive speed. Conclusions Our findings may be of pathophysiological relevance since lysophosphatidylcholines, byproducts of phospholipase A2-catalyzed phospholipid hydrolysis, are preferred carriers of polyunsaturated fatty acids across the blood-brain barrier. Furthermore, diminishment of lysophosphatidylcholines suggests that subjects at risk of schizophrenia may be more susceptible to infections. Their association with cognitive speed supports the view that altered neurotransmission in schizophrenia may be in part mediated by reactive lipids such as prostaglandins. PMID:22257447

  17. A Composite Twin Higgs Model

    E-print Network

    Puneet Batra; Z. Chacko

    2008-11-03

    Twin Higgs models are economical extensions of the Standard Model that stabilize the electroweak scale. In these theories the Higgs field is a pseudo Nambu-Goldstone boson that is protected against radiative corrections up to scales of order 5 TeV by a discrete parity symmetry. We construct, for the first time, a class of composite twin Higgs models based on confining QCD-like dynamics. These theories naturally incoporate a custodial isospin symmetry and predict a rich spectrum of particles with masses of order a TeV that will be accessible at the LHC.

  18. A composite twin Higgs model

    SciTech Connect

    Batra, Puneet [Department of Physics, Columbia University, 538 W. 120th Street, NYC, NY 10027 (United States); Chacko, Z. [Department of Physics, University of Maryland, College Park, Maryland, 20742 (United States)

    2009-05-01

    Twin Higgs models are economical extensions of the standard model that stabilize the electroweak scale. In these theories the Higgs field is a pseudo Nambu-Goldstone boson that is protected against radiative corrections up to scales of order 5 TeV by a discrete parity symmetry. We construct, for the first time, a class of composite twin Higgs models based on confining QCD-like dynamics. These theories naturally incorporate a custodial isospin symmetry and predict a rich spectrum of particles with masses of order a TeV that will be accessible at the LHC.

  19. Speech and Language Delays in Identical Twins.

    ERIC Educational Resources Information Center

    Bentley, Pat

    Following a literature review on speech and language development of twins, case studies are presented of six sets of identical twins screened for entrance into kindergarten. Five sets of the twins and one boy from the sixth set failed to pass the screening test, particularly the speech and language section, and were referred for therapy to correct…

  20. Psychological adjustment to twins after infertility

    Microsoft Academic Search

    Susan C. Klock

    2004-01-01

    The birth of twins and other multiples is physically and emotionally stressful. The increase in the use of the assisted reproductive technologies has lead to an exponential increase in the rates of twins and triplets in the US. Whereas the medical complications of twins and other multiples has been well studied, the psychological and social implications of these events has

  1. Original article Genetic parameters for twinning

    E-print Network

    Paris-Sud XI, Université de

    Original article Genetic parameters for twinning in the Maine-Anjou breed E Manfredi JL Foulley, M) Summary - Genetic parameters and bull transmitting abilities were estimated for twinning in the Maine among Maine-Anjou bulls. cattle / twinning / genetic parameter / sire evaluation / threshold model

  2. Original article Genetic analysis of twinning rate

    E-print Network

    Paris-Sud XI, Université de

    Original article Genetic analysis of twinning rate in Israeli Holstein cattle M Ron* E Ezra, JI The worldwide surplus of milk relative to beef has attracted attention to the genetics of twinning in dairy-250, Israel (Received 12 April 1989; accepted 15 May 1990) Summary - Second and third parity twinning rate

  3. Research With Twins: The Concept of Emergenesis

    Microsoft Academic Search

    David T. Lykken

    1982-01-01

    Preliminaty findings from an on-going study of monozygotic twins reared apart (MZA) and data from a larger sample of twins reared together (MZT and DZT), indicate a surprisingly strong influence of genetic variation on aptitudes, psychophysiological characteristics, personality traits and even dimensions of atti- tude and interest. For some of these variables, MZT and MZA twins show high intra-class correlations

  4. The twin spot generator for differential Drosophila

    E-print Network

    Higgins, Darren

    The twin spot generator for differential Drosophila lineage analysis Ruth Griffin1, Anne Sustar2. To differentially label both daughter cells, we developed the twin spot generator (TSG) technique, which through mitotic recombination generates green and red twin spots that are detectable after the first cell division

  5. Twin Cities Metro Advanced Practice Center

    E-print Network

    Twin Cities Metro Advanced Practice Center Food Safety Self Inspection Checklist #12;Table-20 Vietnamese..............................21-22 #12;Food Safety Self Inspection Checklist Twin Cities Metro has expired. #12;Food Safety Self Inspection Checklist Twin Cities Metro Advanced Practice Center

  6. Accelerated immunosenescence in preindustrial twin mothers

    E-print Network

    Lummaa, Virpi

    Accelerated immunosenescence in preindustrial twin mothers Samuli Helle* , Virpi Lummaa , and Jukka Finland between 1702 and 1859. We found that mothers delivering twins had reduced postreproductive survival after age 65. This effect arose because mothers of twins had a higher probability of succumbing

  7. Diagnosis of Twin Zygosity by Mailed Questionnaire

    Microsoft Academic Search

    Seppo Sarna; Jaakko Kaprio; Pertti Sistonen; Markku Koskenvuo

    1978-01-01

    A deterministic questionnaire method for zygosity determination is developed for use in epidemiological studies of adult twins. It is based on the answers of both members of a twin pair to two questions on similarity and confusion in childhood. The algorithm of the method is used to determine the zygosity status of a twin pair at two different levels of

  8. The Personalities of Twins: Just Ordinary Folks

    Microsoft Academic Search

    Wendy Johnson; Robert F. Krueger; Thomas J. Bouchard; Matt McGue

    2002-01-01

    win studies have demonstrated that personality traits show moderate genetic influence. The conclusions drawn from twin studies rely on the assumptions that twins are represen- tative of the population at large and that monozygotic and dizygotic twins are comparable in every way that might have bearing on the traits being studied. To evaluate these assump- tions, we used Multidimensional Personality

  9. On Teaching About Twins and Time

    ERIC Educational Resources Information Center

    Hewitt, Paul G.

    1973-01-01

    Discusses a four-step instructional presentation in which the twin on the earth is demonstrated older than the twin aboard a spaceship on the basis of the relativistic Doppler effect. Concludes that both twins can meet again at the same place in space at the expense of time. (CC)

  10. Healthy Water Healthy People Field Monitoring Guide

    ERIC Educational Resources Information Center

    Project WET Foundation, 2003

    2003-01-01

    This 100-page manual serves as a technical reference for the "Healthy Water, Healthy People Water Quality Educators Guide" and the "Healthy Water Healthy People Testing Kits". Yielding in-depth information about ten water quality parameters, it answers questions about water quality testing using technical overviews, data interpretation guidelines,…

  11. Healthy Sleep

    NSDL National Science Digital Library

    Who doesn't love a good night's sleep? The Division of Sleep Medicine at Harvard and WGBH have collaborated to produce the Healthy Sleep website to help "illuminate the relevance of sleep, explain the underlying science of sleep, and, most importantly, provide practical information for getting the sleep you need." Visitors interested in getting the sleep they need will find the many videos and interactive features here well worth their time. Under the "Why Sleep Matters" link, visitors will find an interactive timeline entitled "Historical and Cultural Perspectives of Sleep". The "Consequences of Insufficient Sleep" gives visitors the choice of several short videos to watch, including those that address the consequences of driving while drowsy, the link between disease risk and poor sleep, and the public safety and performance issues that arise due to insufficient sleep. The "Getting the Sleep You Need" link has many tips for visitors on how to approach poor sleep habits, including when to seek treatment.

  12. Four twins for a paradox: On ``sensitive'' twins and the biological counterpart of the ``twin paradox''

    NASA Astrophysics Data System (ADS)

    Ascioti, Fortunato A.

    2009-03-01

    Monozygotic twin (MZT) epigenetic development, i.e., aging, diverges largely in time despite the initially very small genetic differences between MZTs. This fact is interpreted as a "sensitivity to initial conditions" phenomenon, a common property of either deterministic or stochastic chaotic systems. Some of the biotheoretical implications stemming from this empirical observation are briefly discussed here, while an actual measure of MZT epigenetic time divergence is given through an estimate of the (Stochastic) Lyapunov exponents (LEs) (i.e., the rate of exponential time divergence). These results suggest a reconsideration of the Langevin-Einstein thought experiment known as the "twin paradox." At least four twins are necessary in order to take into account the inertially independent divergent aging described here. Alternatively, LE estimates, like those given here, should be used. Finally suggested in the actual special-relativity experiments is the replacement of clocks with some nonlinear (chaotic) forced oscillator.

  13. Four twins for a paradox: on "sensitive" twins and the biological counterpart of the "twin paradox".

    PubMed

    Ascioti, Fortunato A

    2009-03-01

    Monozygotic twin (MZT) epigenetic development, i.e., aging, diverges largely in time despite the initially very small genetic differences between MZTs. This fact is interpreted as a "sensitivity to initial conditions" phenomenon, a common property of either deterministic or stochastic chaotic systems. Some of the biotheoretical implications stemming from this empirical observation are briefly discussed here, while an actual measure of MZT epigenetic time divergence is given through an estimate of the (Stochastic) Lyapunov exponents (LEs) (i.e., the rate of exponential time divergence). These results suggest a reconsideration of the Langevin-Einstein thought experiment known as the "twin paradox." At least four twins are necessary in order to take into account the inertially independent divergent aging described here. Alternatively, LE estimates, like those given here, should be used. Finally suggested in the actual special-relativity experiments is the replacement of clocks with some nonlinear (chaotic) forced oscillator. PMID:19334992

  14. NOTE: Increasing cardiac output and decreasing oxygenation sequence in pump twins of acardiac twin pregnancies

    NASA Astrophysics Data System (ADS)

    van Gemert, Martin J. C.; Umur, Asli; van den Wijngaard, Jeroen P. H. M.; Van Bavel, Ed; Vandenbussche, Frank P. H. A.; Nikkels, Peter G. J.

    2005-02-01

    An acardiac twin pregnancy is a rare but serious complication of monochorionic twinning and consists of an acardiac twin and a pump twin. The acardiac twin is a severely malformed fetus that lacks most organs, particularly a heart, but grows during pregnancy because it is perfused by the developmentally normal pump twin via a set of arterioarterial and venovenous placental anastomoses. Pump twins die intrauterine or neonatally in about 50% of the cases. Because the effects of an acardiac mass on the pump twin's development are incompletely known, methods for outcome prognosis are currently not available. We sought to derive simple relations for the pump twin's excess cardiac output and decreased oxygenation and to use available clinical cases for a preliminary test of the model. As a method, we used a theoretical flow model to represent the fetoplacental circulation of an acardiac twin pregnancy and estimated blood deoxygenation and reoxygenation following perfusion of the two bodies and placentas, respectively. The results show the pump twin's excess cardiac output and decrease of venous oxygen saturation to depend on the ratio of pump twin to acardiac twin umbilical blood flow, whose ratio can be measured by ultrasonography. The clinical cases show a decreasing umbilical flow ratio with gestation. In conclusion, prospective serial study is necessary to test whether measurement of umbilical flow ratios allows monitoring the pump twin's pathophysiologic development, possibly resulting in a guideline for prognosis of pump twin survival.

  15. Is That Me or My Twin? Lack of Self-Face Recognition Advantage in Identical Twins

    PubMed Central

    Martini, Matteo; Bufalari, Ilaria; Stazi, Maria Antonietta; Aglioti, Salvatore Maria

    2015-01-01

    Despite the increasing interest in twin studies and the stunning amount of research on face recognition, the ability of adult identical twins to discriminate their own faces from those of their co-twins has been scarcely investigated. One’s own face is the most distinctive feature of the bodily self, and people typically show a clear advantage in recognizing their own face even more than other very familiar identities. Given the very high level of resemblance of their faces, monozygotic twins represent a unique model for exploring self-face processing. Herein we examined the ability of monozygotic twins to distinguish their own face from the face of their co-twin and of a highly familiar individual. Results show that twins equally recognize their own face and their twin’s face. This lack of self-face advantage was negatively predicted by how much they felt physically similar to their co-twin and by their anxious or avoidant attachment style. We speculate that in monozygotic twins, the visual representation of the self-face overlaps with that of the co-twin. Thus, to distinguish the self from the co-twin, monozygotic twins have to rely much more than control participants on the multisensory integration processes upon which the sense of bodily self is based. Moreover, in keeping with the notion that attachment style influences perception of self and significant others, we propose that the observed self/co-twin confusion may depend upon insecure attachment. PMID:25853249

  16. A Powerful Twin Arrives

    NASA Astrophysics Data System (ADS)

    1999-11-01

    First Images from FORS2 at VLT KUEYEN on Paranal The first, major astronomical instrument to be installed at the ESO Very Large Telescope (VLT) was FORS1 ( FO cal R educer and S pectrograph) in September 1998. Immediately after being attached to the Cassegrain focus of the first 8.2-m Unit Telescope, ANTU , it produced a series of spectacular images, cf. ESO PR 14/98. Many important observations have since been made with this outstanding facility. Now FORS2 , its powerful twin, has been installed at the second VLT Unit Telescope, KUEYEN . It is the fourth major instrument at the VLT after FORS1 , ISAAC and UVES.. The FORS2 Commissioning Team that is busy installing and testing this large and complex instrument reports that "First Light" was successfully achieved already on October 29, 1999, only two days after FORS2 was first mounted at the Cassegrain focus. Since then, various observation modes have been carefully tested, including normal and high-resolution imaging, echelle and multi-object spectroscopy, as well as fast photometry with millisecond time resolution. A number of fine images were obtained during this work, some of which are made available with the present Press Release. The FORS instruments ESO PR Photo 40a/99 ESO PR Photo 40a/99 [Preview - JPEG: 400 x 345 pix - 203k] [Normal - JPEG: 800 x 689 pix - 563kb] [Full-Res - JPEG: 1280 x 1103 pix - 666kb] Caption to PR Photo 40a/99: This digital photo shows the twin instruments, FORS2 at KUEYEN (in the foreground) and FORS1 at ANTU, seen in the background through the open ventilation doors in the two telescope enclosures. Although they look alike, the two instruments have specific functions, as described in the text. FORS1 and FORS2 are the products of one of the most thorough and advanced technological studies ever made of a ground-based astronomical instrument. They have been specifically designed to investigate the faintest and most remote objects in the universe. They are "multi-mode instruments" that may be used in several different observation modes. FORS2 is largely identical to FORS1 , but there are a number of important differences. For example, it contains a Mask Exchange Unit (MXU) for laser-cut star-plates [1] that may be inserted at the focus, allowing a large number of spectra of different objects, in practice up to about 70, to be taken simultaneously. Highly sophisticated software assigns slits to individual objects in an optimal way, ensuring a great degree of observing efficiency. Instead of the polarimetry optics found in FORS1 , FORS2 has new grisms that allow the use of higher spectral resolutions. The FORS project was carried out under ESO contract by a consortium of three German astronomical institutes, the Heidelberg State Observatory and the University Observatories of Göttingen and Munich. The participating institutes have invested a total of about 180 man-years of work in this unique programme. The photos below demonstrate some of the impressive possibilities with this new instrument. They are based on observations with the FORS2 standard resolution collimator (field size 6.8 x 6.8 armin = 2048 x 2048 pixels; 1 pixel = 0.20 arcsec). In addition, observations of the Crab pulsar demonstrate a new observing mode, high-speed photometry. Protostar HH-34 in Orion ESO PR Photo 40b/99 ESO PR Photo 40b/99 [Preview - JPEG: 400 x 444 pix - 220kb] [Normal - JPEG: 800 x 887 pix - 806kb] [Full-Res - JPEG: 2000 x 2217 pix - 3.6Mb] The Area around HH-34 in Orion ESO PR Photo 40c/99 ESO PR Photo 40c/99 [Preview - JPEG: 400 x 494 pix - 262kb] [Full-Res - JPEG: 802 x 991 pix - 760 kb] The HH-34 Superjet in Orion (centre) PR Photo 40b/99 shows a three-colour composite of the young object Herbig-Haro 34 (HH-34) , now in the protostar stage of evolution. It is based on CCD frames obtained with the FORS2 instrument in imaging mode, on November 2 and 6, 1999. This object has a remarkable, very complicated appearance that includes two opposite jets that ram into the surrounding interstellar matter. This structure is produced by a machine-gu

  17. Mapping Corpus Callosum Morphology in Twin Pairs Discordant for Bipolar Disorder

    PubMed Central

    van Erp, Theo G. M.; Dutton, Rebecca A.; Boyle, Christina; Madsen, Sarah; Luders, Eileen; Kieseppa, Tuula; Tuulio-Henriksson, Annamari; Huttunen, Matti; Partonen, Timo; Kaprio, Jaakko; Lönnqvist, Jouko; Thompson, Paul M.; Cannon, Tyrone D.

    2011-01-01

    Callosal volume reduction has been observed in patients with bipolar disorder, but whether these deficits reflect genetic vulnerability to the illness remains unresolved. Here, we used computational methods to map corpus callosum abnormalities in a population-based sample of twin pairs discordant for bipolar disorder. Twenty-one probands with bipolar I disorder (mean age 44.4 ± 7.5 years; 48% female), 19 of their non-bipolar co-twins, and 34 demographically matched control twin individuals underwent magnetic resonance imaging. Three-dimensional callosal surface models were created to visualize its morphologic variability and to localize group differences. Neurocognitive correlates of callosal area differences were additionally investigated in a subsample of study participants. Bipolar (BPI) probands, but not their co-twins, showed significant callosal thinning and area reduction, most pronounced in the genu and splenium, relative to healthy twins. Altered callosal curvature was additionally observed in BPI probands. In bipolar probands and co-twins, genu and splenium midsagittal areas were significantly correlated with verbal processing speed and response inhibition. These findings suggest that aberrant connections between cortical regions—possibly reflecting decreased myelination of white matter tracts—may be involved in bipolar pathophysiology. However, findings of callosal thinning appear to be disease related, rather than reflecting genetic vulnerability to bipolar illness. PMID:21383237

  18. Beyond Heritability: Twin Studies in Behavioral Research

    PubMed Central

    Johnson, Wendy; Turkheimer, Eric; Gottesman, Irving I.; Bouchard, Thomas J.

    2010-01-01

    The heritability of human behavioral traits is now well established, due in large measure to classical twin studies. We see little need for further studies of the heritability of individual traits in behavioral science, but the twin study is far from having outlived its usefulness. The existence of pervasive familial influences on behavior means that selection bias is always a concern in any study of the causal effects of environmental circumstances. Twin samples continue to provide new opportunities to identify causal effects with appropriate genetic and shared environmental controls. We discuss environmental studies of discordant twin pairs and twin studies of genetic and environmental transactions in this context. PMID:20625474

  19. A Twin Study of Alexithymia

    Microsoft Academic Search

    Eve M. Valera; Howard Berenbaum

    2001-01-01

    Background: Factors contributing to the development of alexithymia and the nature of alexithymia’s relation with trait negative and positive affectivity are unclear. In this study, a twin approach was used to examine the degree of genetic and environmental contributions to the different facets of alexithymia, and the nature of their relations to trait negative and positive affectivity. Method: Forty-five monozygotic

  20. Atypical parasitic ischiopagus conjoined twins

    Microsoft Academic Search

    Enrique Corona-Rivera; Alfredo Corona-Rivera

    2003-01-01

    Occurrence of asymmetrical or parasitic conjoined twins (CT) is rare, and currently they are classified analogically to the common unions of symmetrical CT. The authors report on an infant with a parasitic third limb attached to the left lateral aspect of the autosite trunk, in whom male gonadal tissue was found histologically. Parasite parts included complete left lower limb, hemipelvis,

  1. Twin disc gear tooth simulator

    Microsoft Academic Search

    Martin W. Eusepi; James F. Dill

    1994-01-01

    This report describes the results of an effort to develop a disc on disc test rig for evaluating lubricant load capacity. The goal of the program has been to develop a reliable disc on disc (or Twin Disc) test rig capable of providing more reliable and lower cost evaluation of lubricant load capacity than the Ryder gear test which is

  2. Molecular analysis of the gut microbiota of identical twins with Crohn's disease

    SciTech Connect

    Jansson, Janet; Dicksved, Johan; Halfvarson, Jonas; Rosenquist, Magnus; Jarnerot, Gunnar; Tysk, Curt; Apajalahti, Juha; Engstrand, Lars; Jansson, Janet K.

    2008-03-14

    Increasing evidence suggests that a combination of host genetics and the composition of the gut microbiota are important for development of Crohn's disease (CD). Our aim was to study identical twins with CD to determine microbial factors independently of host genetics. Fecal samples were studied from 10 monozygotic twin pairs with CD (discordant n=6, concordant n=4) and 8 healthy twin pairs. DNA was extracted, 16S rRNA genes were PCR amplified and T-RFLP fingerprints generated using general bacterial and Bacteroides group specific primers. The microbial communities were also profiled based on their % G+C contents. Bacteroides 16S rRNA genes were cloned and sequenced from a subset of the samples. The bacterial diversity in each sample and similarity indices between samples were estimated based on the T-RFLP data using a combination of statistical approaches. Healthy individuals had a significantly higher bacterial diversity compared to individuals with CD. The fecal microbial communities were more similar between healthy twins than between twins with CD, especially when these were discordant for the disease. The microbial community profiles of individuals with ileal CD were significantly different from healthy individuals and those with colonic CD. Also, CD individuals had a lower relative abundance of B. uniformis and higher relative abundances of B. ovatus and B. vulgatus. Our results suggest that genetics and/or environmental exposure during childhood in part determine the gut microbial composition. However, CD is associated with dramatic changes in the gut microbiota and this was particularly evident for individuals with ileal CD.

  3. Imaging concerns unique to twin pregnancy.

    PubMed

    Mahalingam, Sowmya; Dighe, Manjiri

    2014-01-01

    The incidence of multiple gestations is increasing with rising maternal age and the utilization of artificial reproductive techniques. Twinning confers an increased risk to the pregnancy, with higher incidence of structural anomalies, preterm delivery, and perinatal morbidity and mortality. Certain conditions are unique to twin pregnancy, such as the twin-to-twin transfusion syndrome and the acardiac twin, secondary to vascular sharing between both the fetuses. Conjoined twinning is a phenomenon occurring because of late splitting of the zygote. Advances in imaging have increased our ability to manage multiple pregnancies with accurate prenatal diagnosis, better antenatal surveillance, and novel image-guided procedures. The purpose of this article is to provide an overview of the twinning process, including the pathophysiology, diagnostic pearls, and dilemmas and to briefly outline the outcomes and available treatment options to assist the radiologist in better management of multiple gestations. PMID:25239076

  4. Twinning in nanocrystalline fcc and bcc metals

    NASA Astrophysics Data System (ADS)

    Boyko, Vladimir S.; Kezerashvili, Roman Ya.

    2013-03-01

    The deformation twinning in nanocrystalline (nc) face-centered cubic (fcc) metals, body-centered cubic (bcc) metals, and in nc Si is analyzed. The phenomenological approach is used to make a bridge between microscopical mechanisms of twin nucleation and macroscopical characteristics of twinning with different crystal structures and to calculate the grain size range of the twinning propensity, the requisite external stress for twinning propagation in nc polycrystals, and the grain size at which the slip begins to prevail over the twinning. The developed approach allows to derive analytical expressions and estimate lower and and upper limits of grain sizes at which a twinning propensity is occurred. Results of calculations for the nc fcc metals Al, Cu, Ni, Pd, Au, nc bcc metals Ta, Fe, Mo, W, Nb, and nc diamond-cubic Si are compared with the experimental data, otherwise predictions are made.

  5. Reticular erythematous mucinosis occurring in a brother and sister.

    PubMed

    Caputo, Ruggero; Marzano, Angelo V; Tourlaki, Athanasia; Marchini, Maurizio

    2006-01-01

    Reticular erythematous mucinosis (REM) is a rare, primary cutaneous mucinosis clinically characterized by a persistent reticular erythema on the mid chest and mid-upper back, and histologically by a mononuclear cell infiltrate and deposits of mucin in the dermis. To our knowledge, the present report of REM occurring in a Caucasian man and his sister is the first reported case of familial REM. Since a host-specific immune response to unknown antigens may be involved in the pathogenesis of this entity, human leukocyte antigen typing was determined and compared to those reported in autoimmune diseases. PMID:16707892

  6. District nursing sister attached to hospital surgical department.

    PubMed

    Hockey, L

    1970-04-18

    An experiment of attaching a district nursing sister to the surgical department of a general hospital was designed to show the use of the district nursing service for the after-care of patients discharged from hospital after surgical treatment. In a 15-week period about 590 bed days were saved, and only six out of 126 patients discharged early had to be readmitted. Most of the patients and the general practitioners who replied to questionaries about the scheme were in favour of it. PMID:4314877

  7. District Nursing Sister Attached to Hospital Surgical Department

    PubMed Central

    Hockey, Lisbeth

    1970-01-01

    An experiment of attaching a district nursing sister to the surgical department of a general hospital was designed to show the use of the district nursing service for the after-care of patients discharged from hospital after surgical treatment. In a 15-week period about 590 bed days were saved, and only six out of 126 patients discharged early had to be readmitted. Most of the patients and the general practitioners who replied to questionaries about the scheme were in favour of it. PMID:4314877

  8. Rank relations among sisters in semi-free-ranging Barbary macaques ( Macaca sylvanus )

    Microsoft Academic Search

    Jean Prud'homme; Bernard Chapais

    1993-01-01

    Although semi-free-ranging Barbary macaque females are able to outrank older females from lower-ranking matrilines (matrilineal rank acquisition), they do not systematically outrank their older sisters, as is known to be the case for semi-free-ranging rhesus monkeys (Macaca mulatta) and Japanese macaques (Macaca fuscata). We test the hypothesis that differences in the support received by younger sisters against their older sisters

  9. Maternal mild hyperphenylalaninemia: results of treated and untreated pregnancies in two sisters.

    PubMed

    Levy, H L; Goss, B S; Sullivan, D K; Michals-Matalon, K; Dobbs, J M; Guldberg, P; Güttler, F

    1994-09-01

    The outcomes of mild hyperphenylalaninemia (MHP) in three children of two sisters were compared. The IQ of the child from an untreated pregnancy was 105; the developmental quotients of the two infant offspring from treated and untreated pregnancies were 122 and 114, respectively. The IQ of the sister with untreated MHP was 101; that of the sister who received dietary treatment for MHP during infancy was 90. Thus MHP and maternal MHP appear to have been clinically inconsequential in this family. PMID:8071761

  10. Intellectual disability, coarse face, relative macrocephaly, and cerebellar hypotrophy in two sisters.

    PubMed

    Sousa, Sérgio B; Ramos, Fabiana; Garcia, Paula; Pais, Rui P; Paiva, Catarina; Beales, Philip L; Moore, Gudrun E; Saraiva, Jorge M; Hennekam, Raoul C M

    2014-01-01

    We report on two Portuguese sisters with a very similar phenotype characterized by severe intellectual disability, absent speech, relative macrocephaly, coarse face, cerebellar hypotrophy, and severe ataxia. Additional common features include increased thickness of the cranial vault, delayed dental eruption, talipes equino-varus, clinodactyly, and camptodactyly of the fifth finger. The older sister has retinal dystrophy and the younger sister has short stature. Their parents are consanguineous. We suggest this condition constitutes a previously unreported autosomal recessive entity. PMID:24501761

  11. Healthy Family 2009: Assuring Healthy Aging

    MedlinePLUS

    ... Issue Past Issues Healthy Family 2009 Assuring Healthy Aging Past Issues / Winter 2009 Table of Contents For ... please turn Javascript on. 7 Smart Steps to Aging Well 1. Control Blood Pressure You can have ...

  12. Why the Healing Gods Are Twins

    PubMed Central

    Hankoff, Leon D.

    1977-01-01

    The association of twins with health-giving powers is widespread in mythology, folklore, and religion. The Ashvins of the Rig-Veda, the classical Dioscuri, and the early Christian saints Cosmos and Damian are among the many examples of twins divinely empowered in the area of health and fertility. A characteristic set of attributes of twins recurs in different mythologies of wide distribution. In addition to healing, divine twins are often empowered with the ability to revive the dead, increase the fertility of man, animals, and crops, influence the weather, predict the future, and insure victory in battle. In some traditional societies these special attributes are thought to extend to all of the twins and their parents in the tribe. Ancient and primitive societies supposed that the birth of twins was associated with divine influence, the mother having been visited or otherwise affected by supernatural powers. A frequent explanation was that twins were the result of superfetation, a divine impregnation occurring along with that by the lawful husband. The specific powers of divine twins appear to be a reflection of the particular form of origin of twins through divine interference with the fertilization process. The twins thus share some of the powers of the divine parent, particularly those pertaining to fertility. Their dual paternity and its inherent competition is related to their martial interests as well as their ability to resolve ambivalent or ambiguous situations and predict outcomes. PMID:560764

  13. Why the healing gods are twins.

    PubMed

    Hankoff, L D

    1977-01-01

    The association of twins with health-giving powers is widespread in mythology, folklore, and religion. The Ashvins of the Rig-Veda, the classical Dioscuri, and the early Christian saints Cosmos and Damian are among the many examples of twins divinely empowered in the area of health and fertility. A characteristic set of attributes of twins recurs in different mythologies of wide distribution. In addition to healing, divine twins are often empowered with the ability to revive the dead, increase the fertility of man, animals, and crops, influence the weather, predict the future, and insure victory in battle. In some traditional societies these special attributes are thought to extend to all of the twins and their parents in the tribe.Ancient and primitive societies supposed that the birth of twins was associated with divine influence, the mother having been visited or otherwise affected by supernatural powers. A frequent explanation was that twins were the result of superfetation, a divine impregnation occurring along with that by the lawful husband. The specific powers of divine twins appear to be a reflection of the particular form of origin of twins through divine interference with the fertilization process. The twins thus share some of the powers of the divine parent, particularly those pertaining to fertility. Their dual paternity and its inherent competition is related to their martial interests as well as their ability to resolve ambivalent or ambiguous situations and predict outcomes. PMID:560764

  14. Deformation twinning: Influence of strain rate

    SciTech Connect

    Gray, G.T. III

    1993-11-01

    Twins in most crystal structures, including advanced materials such as intermetallics, form more readily as the temperature of deformation is decreased or the rate of deformation is increased. Both parameters lead to the suppression of thermally-activated dislocation processes which can result in stresses high enough to nucleate and grow deformation twins. Under high-strain rate or shock-loading/impact conditions deformation twinning is observed to be promoted even in high stacking fault energy FCC metals and alloys, composites, and ordered intermetallics which normally do not readily deform via twinning. Under such conditions and in particular under the extreme loading rates typical of shock wave deformation the competition between slip and deformation twinning can be examined in detail. In this paper, examples of deformation twinning in the intermetallics TiAl, Ti-48Al-lV and Ni{sub 3}A as well in the cermet Al-B{sub 4}C as a function of strain rate will be presented. Discussion includes: (1) the microstructural and experimental variables influencing twin formation in these systems and twinning topics related to high-strain-rate loading, (2) the high velocity of twin formation, and (3) the influence of deformation twinning on the constitutive response of advanced materials.

  15. Ocular manifestations of Noonan syndrome in twin siblings: A case report of keratoconus with acute corneal hydrops

    PubMed Central

    Lee, Anna; Sakhalkar, Monali V

    2014-01-01

    Ocular manifestations of Noonan syndrome (NS) in a set of healthy 20-year-old African-American fraternal twins are reported with emphasis on a rare finding of keratoconus with acute corneal hydrops in one twin. Both the twins had learning disabilities and attended a special needs school. Evaluation included visual acuity assessment, tonometry and external eye, slit lamp and dilated fundus examinations, topography with Pentacam and external photographs. The first case was more remarkable as keratoconus with acute corneal hydrops was observed. The patient presented with severe cloudy vision that had worsened over a span of 1 month. It improved significantly on follow-up. The second case included a unique constellation of ocular pathology that highlights the diversity of NS manifestations even amongst twins. Conservative treatment of keratoconus with acute corneal hydrops in a NS patient helped largely resolve the patient's condition. We report the diverse spectrum of ocular manifestations associated with this rare congenital disorder. PMID:25579364

  16. 36. Photocopy of Photograph (original print located in the Twin ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    36. Photocopy of Photograph (original print located in the Twin Falls Library, Twin Falls, Idaho). Original Photograph, Bisbee Photo, William H. Eaton, Photographer, date unknown. COTTONWOOD FLUME SOUTH OF KIMBERLY, IDAHO. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  17. 185. Photocopy of drawing, Twin Falls Canal Company, date unknown. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    185. Photocopy of drawing, Twin Falls Canal Company, date unknown. MILNER DAM CROSS SECTION PLAN, TWIN FALLS COUNTY, MILNER, IDAHO; BLUEPRINT. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  18. 189. Photocopy of drawing, Twin Falls Canal Company, date unknown. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    189. Photocopy of drawing, Twin Falls Canal Company, date unknown. ROCK CREEK CROSSING, LOW LINE CANAL, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, IDAHO; BLUEPRINT. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  19. 1. GENERAL VIEW OF THE LOWER END OF TWIN LAKES ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. GENERAL VIEW OF THE LOWER END OF TWIN LAKES SHOWING THE HISTORIC OUTLET WORKS AT THE EDGE OF THE WATER NEAR CENTER OF THE PHOTO WITH THE NEW TWIN LAKES DAM JUST BEHIND. VIEW LOOKING SOUTHEAST. - Twin Lakes Dam & Outlet Works, Beneath Twin Lakes Reservoir, T11S, R80W, S22, Twin Lakes, Lake County, CO

  20. 191. Photocopy of drawing, Twin Falls Canal Company, date unknown. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    191. Photocopy of drawing, Twin Falls Canal Company, date unknown. SPILLWAY GATES, MILNER DAM, TWIN FALLS COUNTY, MILNER, IDAHO; BLUEPRINT. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  1. 194. Photocopy of drawing, Twin Falls Canal Company, date unknown. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    194. Photocopy of drawing, Twin Falls Canal Company, date unknown. PROFILE AND GATE PLAN, NORTH ISLAND CROSS SECTION OF DAM, TWIN FALLS COUNTY, MILNER, IDAHO; BLUEPRINT. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  2. 186. Photocopy of drawing, Twin Falls Canal Company, date unknown. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    186. Photocopy of drawing, Twin Falls Canal Company, date unknown. DRY CREEK RESERVOIR, CASSIA COUNTY (NOW TWIN FALLS COUNTY); MAP. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  3. 151. Photocopy of drawing (taken from Twin Falls Canal Company ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    151. Photocopy of drawing (taken from Twin Falls Canal Company Surveyor's Transit Book #363, Page 20). SURVEY PRINT SHOWING POINT SPILLWAY AND FIELD NOTES, TWIN FALLS COUNTY NORTHWEST OF MURTAUGH, IDAHO. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  4. 157. Photocopy of drawing (taken from Twin Falls Canal Company ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    157. Photocopy of drawing (taken from Twin Falls Canal Company Field Book #360, Page 75, entitled, 'Clay-Seam Cut-Off.' Cross-Reference: ID-15-153). MILNER DAM SURVEY, TWIN FALLS COUNTY, MILNER, IDAHO. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  5. 195. Photocopy of drawing, Twin Falls Canal Company, date unknown. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    195. Photocopy of drawing, Twin Falls Canal Company, date unknown. PLAN OF CONSTRUCTION AREA PLANT, TWIN FALLS COUNTY, MILNER, IDAHO; BLUEPRINT. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  6. 181. Photocopy of Photograph, Twin Falls Canal Company. Photographer and ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    181. Photocopy of Photograph, Twin Falls Canal Company. Photographer and date unknown. POINT SPILL, TWIN FALLS COUNTY; SOUTH VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  7. 179. Photocopy of Photograph, Twin Falls Canal Company, Bisbee Photo, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    179. Photocopy of Photograph, Twin Falls Canal Company, Bisbee Photo, September, 1912. Photographer unknown. VIEW OF LOW LINE CANAL, TWIN FALLS COUNTY; VIEW OF LOW LINE CANAL IN PETE LINK'S FIELD. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  8. 158. Photocopy of transit book (taken from Twin Falls Canal ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    158. Photocopy of transit book (taken from Twin Falls Canal Company Transit Book #404T, Page 3, #46, Division One). START OF MAIN CANAL SURVEY, TWIN FALLS COUNTY, MILNER, IDAHO. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  9. 155. Photocopy of transit book (taken from Twin Falls Canal ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    155. Photocopy of transit book (taken from Twin Falls Canal Company Surveyor's Transit Book #405T, Page 1, #46 Division One). STATEMENT RE: SURVEY ALIGNMENT 3/03, TWIN FALLS COUNTY, MILNER, IDAHO. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  10. 187. Photocopy of drawing, Twin Falls Canal Company, date unknown. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    187. Photocopy of drawing, Twin Falls Canal Company, date unknown. TOPOGRAPHICAL MAP OF MILNER DAM LOCATION, TWIN FALLS COUNTY, MILNER, IDAHO; BLUEPRINT MAP. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  11. 182. Photocopy of Photograph, Twin Falls Canal Company. Photographer and ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    182. Photocopy of Photograph, Twin Falls Canal Company. Photographer and date unknown. MILNER DAM TUNNELS, TWIN FALLS COUNTY, MILNER, IDAHO; APPROACH TO TUNNELS. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  12. 178. Photocopy of Photograph, Twin Falls Canal Company. C. R. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    178. Photocopy of Photograph, Twin Falls Canal Company. C. R. Savage, Photographer, March, 1905. FIRST FULL WATER OVER MILNER DAM, TWIN FALLS COUNTY, MILNER, IDAHO; SOUTHWEST VIEW OF SPILLWAY GATES. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  13. 177. Photocopy of Photograph, Twin Falls Canal Company, Bisbee Photo, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    177. Photocopy of Photograph, Twin Falls Canal Company, Bisbee Photo, September, 1912. Photographer unknown. COTTONWOOD FLUME, HIGH LINE CANAL, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, IDAHO; SOUTH VIEW FROM UPPER SIDE. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  14. 193. Photocopy of Photograph, Twin Falls Canal Company, date unknown. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    193. Photocopy of Photograph, Twin Falls Canal Company, date unknown. MILNER DAM PROFILE, TWIN FALLS COUNTY, MILNER, IDAHO; BLUEPRINT. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  15. 183. Photocopy of map (Twin Falls Canal Company). TOPOGRAPHICAL MAP ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    183. Photocopy of map (Twin Falls Canal Company). TOPOGRAPHICAL MAP OF MILNER DAM SITE, TWIN FALLS COUNTY, MILNER, IDAHO; MAP, LEFT SIDE ONLY. CROSS REFERENCE: ID-15-192. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  16. 153. Photocopy of drawing (taken from Twin Falls Canal Company ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    153. Photocopy of drawing (taken from Twin Falls Canal Company Field Book #360, Page 74, entitled, 'Clay-Seam Cut-Off.' Cross-Reference: ID-15-157). MILNER DAM SURVEY, TWIN FALLS COUNTY, MILNER, IDAHO. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  17. 192. Photocopy of drawing, Twin Falls Canal Company, date unknown. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    192. Photocopy of drawing, Twin Falls Canal Company, date unknown. TOPOGRAPHICAL MAP (DAM DRAWN IN), MILNER SITE, TWIN FALLS COUNTY, MILNER, IDAHO; RIGHT SIDE OF MAP (LEFT ON ID-15-183). - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  18. 154. Photocopy of transit book (taken from Twin Falls Canal ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    154. Photocopy of transit book (taken from Twin Falls Canal Company Surveyor's Transit Book #405T, Page 2, #46 Division One). STATEMENT OF SIGHT-SETTING FOR 1903 SURVEY TO ALIGN SOUTH SIDE CANAL, TWIN FALLS COUNTY, MILNER, IDAHO. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  19. 152. Photocopy of drawing (taken from Twin Falls Canal Company ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    152. Photocopy of drawing (taken from Twin Falls Canal Company Surveyor's Transit Book #363, Page 1). 1912 CONDITION REPORT OF MILNER DAM AREA, TWIN FALLS COUNTY, MILNER, IDAHO. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  20. 190. Photocopy of drawing, Twin Falls Canal Company, date unknown. ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    190. Photocopy of drawing, Twin Falls Canal Company, date unknown. GENERAL PLAN OF MILNER DAM TUNNELS, TWIN FALLS COUNTY, MILNER, IDAHO; BLUEPRINT. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  1. Eating Healthy Ethnic Food

    MedlinePLUS

    ... Parents/Families ( We Can! ) Health Professional Resources Tipsheet: Eating Healthy Ethnic Food Trying different ethnic cuisines to ... Aim for a Healthy Weight Pocket Guide to Eating Healthy on the Go features tips on ordering ...

  2. Congenital malaria in newborn twins.

    PubMed

    Opare, D A

    2012-09-01

    A 28-year-old woman (G2P1A), with 36 weeks gestation, reported to a health facility in Sunyani on 22(nd) February 2009 with history of labour pains, without fever. She was reported to have taken sulphadoxine-pyrimethamine for malaria prophylaxis during the pregnancy but did not use insecticide-treated net. She delivered twins on the same day. The mother and the twins developed fever on the same day. A laboratory investigation on the three of them was positive for malaria parasites. The three were successfully treated with quinine. Congenital malaria is real and it is therefore recommended that babies born to mothers with malaria should be screened for congenital malaria. PMID:23661831

  3. Clinical and echographic features of in utero cardiac dysfunction in the recipient twin in twin-twin transfusion syndrome

    Microsoft Academic Search

    N Zosmer; R Bajoria; E Weiner; M Rigby; J Vaughan; N M Fisk

    1994-01-01

    OBJECTIVE--Fetal twin-twin transfusion syndrome (TTTS) presenting in the second trimester has been associated with almost no perinatal survival until recently, when serial drainage of amniotic fluid has improved the prognosis to 70%-80%. Most recipient twins now survive but develop cardiac dysfunction. The study was undertaken to evaluate the abnormal echocardiographic features and clinical complications of cardiac disease in the recipient

  4. Psychiatric resilience: longitudinal twin study

    PubMed Central

    Amstadter, Ananda B.; Myers, John M.; Kendler, Kenneth S.

    2014-01-01

    Objective There is great variability in response to stressful life events (SLEs), with some individuals demonstrating substantial psychiatric symptoms while others remain largely asymptomatic. The source of this variability is poorly understood. The present study aimed to examine the genetic and environmental underpinning of resilience, defined as the difference between the twins’ total score on a broad measure of internalizing symptoms and their predicted score based on their cumulative exposure to SLEs. Method SLE exposure and internalizing symptoms were assessed at two time points in 7,500 adult twins. Using the residual between actual and predicted internalizing symptom total score, twin modeling was conducted for each wave separately, as well as longitudinally. Quantitative and qualitative sex effects were also tested. Results Resilience was found to have a mild to moderate genetic heritability at each individual wave (~31%). Additionally, qualitative sex effects were found. Incorporating error of measurement into the model increased the estimated heritability for the latent construct of resilience (~50%). Unconfounded by measurement error and occasion specific effects, environmental influences contributed roughly equally to determining the individual level of resilience. Conclusions Genetic factors influence the level of psychiatric resilience, and are largely stable over time. The genes that impact on resilience are not entirely the same in males and females, although the degree of heritability is equal across the sexes. Environmental influences can also have an enduring effect on resilience. The present findings of the genetic and environmental influences on adaptation to SLEs clarify the sources of individual variation to environmental stressors. PMID:24723629

  5. Asymmetric parasitic dicephalus conjoined twins.

    PubMed

    Esenkaya, Semra; Gürbüz, Birgül; Yalti, Serap

    2004-02-01

    In this report, we describe the case of a 19-year-old primigravida pregnant woman who had been hospitalized for 2 days with bleeding and a diagnosis of imminent abortion. Sonographic examination revealed a single fetus of approximately 17 weeks' gestation that initially appeared normal except for a mass on its neck. Further evaluation of the mass identified it as an anencephalic fetal head that was joined to the body with deformed cervical vertebrae. We diagnosed asymmetric parasitic dicephalus conjoined twins. The parents elected to terminate the pregnancy. Labor was induced, and the patient delivered a 20-cm, 208-g male fetus. The fetus had 4 normal limbs and a normal abdomen. Both its heads had a cleft lip, and its spine was U shaped with closed spina bifida at the spinal union in the thoracolumbar area. The patterns of conjoined twins are infinitely varied, but they can be generally classified according to standardized terms based on the anatomic site of their union. Cases of conjoined twins occur so rarely that it is important to learn as much as possible from each case. PMID:14750144

  6. The TWINS Science Data System after the launch of TWINS 1

    NASA Astrophysics Data System (ADS)

    Goldstein, J.; Valek, P.; Skoug, R.; Delapp, D.; Redfern, J.; Carruth, B.; McComas, D.

    2007-05-01

    The Two Wide-angle Imaging Neutral-atom Spectrometers (TWINS) 1 satellite is in orbit and science data are expected to commence in the near future. TWINS-1 comprises half of the TWINS stereoscopic neutral atom imaging system that will advance our knowledge of the Earth's ring current. To support the expected data return, we have developed a Science Data System (SDS) for the TWINS mission. The TWINS SDS is an IDL- and Java- driven data interface that operates primarily via a web browser, and has as its spine an SQL-queryable database. Through this interface, TWINS science data will be provided to the TWINS team, the space science community, and the public. In this paper we present the current and future capabilities of the TWINS SDS, as well as how the SDS fits into virtual observatory infrastructure.

  7. Twins Eye Study in Tasmania (TEST): Rationale and Methodology to Recruit and Examine Twins

    PubMed Central

    Mackey, David A; MacKinnon, Jane R; Brown, Shayne A; Kearns, Lisa S; Ruddle, Jonathan B; Sanfilippo, Paul G; Sun, Cong; Hammond, Christopher J; Young, Terri L; Martin, Nicholas G; Hewitt, Alex W

    2013-01-01

    Visual impairment is a leading cause for morbidity and poor quality of life in our community. Unravelling the mechanisms underpinning important blinding diseases could allow for preventative or curative steps to be implemented. Twin siblings provide a unique opportunity in biology to discover genes associated with numerous eye diseases and ocular biometry. Twins are particularly useful for quantitative trait analysis through genome-wide association and linkage studies. Although many studies involving twins rely on twin registries, we present our approach to the Twins Eye Study in Tasmania to provide insight into possible recruitment strategies, expected participation rates and potential examination strategies that can be considered by other researchers for similar studies. Five separate avenues for cohort recruitment were adopted: 1) piggy-backing existing studies where twins had been recruited; 2); utilising the national twin registry; 3) word of mouth and local media publicity; 4) directly approaching schools; and finally 5) collaborating with other research groups studying twins. PMID:19803772

  8. Fetoscopic laser ablation of placental vessels in severe previable twin-twin transfusion syndrome

    Microsoft Academic Search

    Julian D. De Lia; Randall S. Kuhlmann; Timothy W. Harstad; Dwight P. Cruikshank

    1995-01-01

    OBJECTIVE: We undertook a pilot study to determine the feasibility and efficacy of fetoscopic laser occlusion of chorioangiopagous vessels in severe previable twin-twin transfusion syndrome.STUDY DESIGN: A total of 35 patients were referred to the investigators with ultrasonographic findings consistent with twin-twin transfusion syndrome, posterior placental implantation, gestational age < 25 weeks, and clinical hydramnios. Placental vessel occlusion was performed

  9. Older twins' experiences of the relationship with their co-twin over the life-course

    Microsoft Academic Search

    Sirpa Pietilä; Anita Björklund; Pia Bülow

    Based on 35 life stories of aging twins, this study focuses on personal experiences and recollections of their relationships with the co-twin over the life-course. The participants are part of two longitudinal Swedish twin studies on aging, SATSA and Gender. In the narrative analysis, three relationship patterns, labeled ‘nurturing’, ‘draining’, and ‘superficial’, emerged, pointing to qualitative aspects in the co-twin

  10. Partial Meissner effect in superconductors with twins

    SciTech Connect

    Gurevich, A.L.; Mints, R.G. (Institute of High Temperatures of the USSR, Academy of Sciences, 127412 Moscow (SU))

    1988-11-01

    Superconductivity of twinning planes, arising at critical temperature T/sub c/ exceeding the bulk point T/sub co/, may prove to be important for the understanding of the properties of high-temperature superconductors with well-developed twinning structure. This paper shows that regardless of a specific mechanism of superconductivity, twins at T/sub c/>T/sub co/ act as seeds for the growth of metastable superconducting domains whose order parameter phases differ by {pi}.

  11. Management of perinatal loss of a twin.

    PubMed Central

    Lewis, E.; Bryan, E. M.

    1988-01-01

    The death of a twin during pregnancy or around birth gives rise to a bewildering confusion of thoughts and feelings that can impede mourning and disturb the bereaved mother's care of a surviving twin. Every effort should be made to give the parents and siblings an experience of the dead baby. Photographs especially can reduce confusion and assist reality testing and thus facilitate the grieving process and improve the care of the surviving twin. PMID:3144377

  12. Multiple regression analysis of twin data

    Microsoft Academic Search

    J. C. DeFries; David W. Fulker

    1985-01-01

    A multiple regression model for the analysis of twin data is described in which a cotwin's score is predicted from a proband's score and the coefficient of relationship (R=1.0 and 0.5 for identical and fraternal twin pairs, respectively). This model is especially appropriate for the analysis of data on twins in which one member of each pair has been selected

  13. A twin study of personality disorders

    Microsoft Academic Search

    Svenn Torgersen; Sissel Lygren; Per Anders Řien; Ingunn Skre; Sidsel Onstad; Jack Edvardsen; Kristian Tambs; Einar Kringlen

    2000-01-01

    No twin study has previously investigated the whole range of personality disorders (PDs) recorded by interviews. Based on twin and patient registries, 92 monozygotic (MZ) and 129 dizygotic (DZ) twin pairs were interviewed with the Structured Clinical Interview for DSM-III-R Personality Disorders (SCID-II). Observed prevalence rates from a normal population study of more than 2,000 individuals were used in combination

  14. College-age twins: university admission policies / twin research: birth weight and neuromotor performance; transfusion syndrome markers; vanishing twins and fetal sex determination; mz twin discordance for wilson's disease / media: big at birth; planned separation of conjoined twins; x factor twins; Cinema: the identical.

    PubMed

    Segal, Nancy L

    2014-12-01

    There is a lack of research findings addressing the unique college admissions issues faced by twins and other multiples. The advantages and disadvantage twins face, as reported by college administrators, twins and families are reviewed. Next, recent research addressing twins' birth weight and neuromotor performance, transfusion syndrome markers, the vanishing twin syndrome and monozygotic (MZ) twin discordance for Wilson's disease is described. News items concerning the birth of unusually large twins, the planned separation of conjoined twins, twin participants in the X Factor games and a film, The Identical, are also summarized. PMID:25331364

  15. Sixty-one day twin to twin birth interval in a low technology setting.

    PubMed

    Odukogbe, A A; Adesina, O A; Babarinsa, I A; Onifade, R A; Adewole, I F

    2002-09-01

    Multiple pregnancy, whether spontaneous or from artificial reproductive techniques, is regarded as high risk. Limiting the twin-twin birth interval to within 30 minutes has been widely practised. However, conservative management of the retained live, immature second twin may be worthwhile. We report a case lasting sixty-one days in a low technology setting. PMID:12751572

  16. INCREASED TWINNING AND COW PRODUCTIVITY IN BEEF CATTLE SELECTED FOR OVULATION AND TWINNING RATE

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Since 1981, cattle have been selected for fraternal twin births using estimated breeding values for twinning calculated from repeated measurements of ovulation rate in all heifer progeny starting at about 12 months of age, from twinning rate in the selected females, and from progeny testing and sub...

  17. Twin Loss: Implications for Counselors Working with Surviving Twins.(practice & Theory)

    ERIC Educational Resources Information Center

    Withrow, Rebecca; Schwiebert, Valerie L.

    2005-01-01

    Multiple births are becoming increasingly prevalent due to the use of fertility drugs and women choosing to wait until later life to conceive. With the growth in the twin population, little research has been done to investigate the effects on the grief process when 1 twin dies. Counselors must understand the unique experience of twins to formulate…

  18. Endoscopic Laser Surgery versus Serial Amnioreduction for Severe Twin-to-Twin Transfusion Syndrome

    Microsoft Academic Search

    Marie-Victoire Senat; Jan Deprest; Michel Boulvain; Alain Paupe; Norbert Winer; Yves Ville

    2004-01-01

    background Monochorionic twin pregnancies complicated by severe twin-to-twin transfusion syn- drome at midgestation can be treated by either serial amnioreduction (removal of large volumes of amniotic fluid) or selective fetoscopic laser coagulation of the communicat- ing vessels on the chorionic plate. We conducted a randomized trial to compare the effi- cacy and safety of these two treatments. methods Pregnant women

  19. Atomistic deformation mechanisms in twinned copper nanospheres

    PubMed Central

    2014-01-01

    In the present study, we perform molecular dynamic simulations to investigate the compression response and atomistic deformation mechanisms of twinned nanospheres. The relationship between load and compression depth is calculated for various twin spacing and loading directions. Then, the overall elastic properties and the underlying plastic deformation mechanisms are illuminated. Twin boundaries (TBs) act as obstacles to dislocation motion and lead to strengthening. As the loading direction varies, the plastic deformation transfers from dislocations intersecting with TBs, slipping parallel to TBs, and then to being restrained by TBs. The strengthening of TBs depends strongly on the twin spacing. PMID:25024693

  20. Deformation-Twin-Induced Grain Boundary Failure

    SciTech Connect

    Yongfeng Zhang; Paul C. MIllett; Michael Tonks; Bulent Biner

    2012-01-01

    This work presents a mechanism of deformation-twin-induced grain boundary failure, and demonstrates the mechanism using molecular dynamics simulations. Deformation twinning is observed as the dominant mechanism during tensile deformation of columnar nanocrystalline body-centered cubic Mo. As a twin approaches a grain boundary, local stress concentration develops due to the incompatible plastic deformations in the two neighboring grains. The magnitude of the stress concentration increases as the twin widens, leading to grain boundary cracking by nucleation and coalescence of microcracks/voids.

  1. 78 FR 28125 - Airworthiness Directives; Twin Commander Aircraft LLC Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-14

    ...2120-AA64 Airworthiness Directives; Twin Commander Aircraft LLC Airplanes AGENCY...airworthiness directive (AD) for certain Twin Commander Aircraft LLC Models 690, 690A...information identified in this AD, contact Twin Commander Aircraft LLC; 1176...

  2. Cross-twinning in a natural spinel from Sri Lanka

    Microsoft Academic Search

    Rosa Anna Fregola; Eugenio Scandale

    2007-01-01

    A modified cross-twinning growth mechanism is put forward to explain the anomalous morphology of a spinel multiple-twin from Sri Lanka, flattened crosswise the twin\\u000a planes. Cross-twinning in spinel was found also in other specimens from Pegu (Myanmar), and the results were published in\\u000a a previous paper. This particular type of twinning is derived from the combination of cyclic\\u000a twinning with

  3. 12. Photographic copy of copy of Twin Lakes Outlet Works ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    12. Photographic copy of copy of Twin Lakes Outlet Works construction drawing dated January 15, 1951. Drawn by W.A. Doe for the Twin Lakes Reservoir and Canal Co. (copy in possession of Bureau of Reclamation, location of original unknown) 'AS CONSTRUCTED' PLANS OF 1949-50, REHABILITATION OF TWIN LAKES RESERVOIR OUTLET WORKS, DETAILS OF DISCHARGE BASIN. - Twin Lakes Dam & Outlet Works, Beneath Twin Lakes Reservoir, T11S, R80W, S22, Twin Lakes, Lake County, CO

  4. 11. Photographic copy of copy of Twin Lakes Outlet Works ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    11. Photographic copy of copy of Twin Lakes Outlet Works construction drawing dated January 15, 1951. Drawn by W.A. Doe for the Twin Lakes Reservoir and Canal Co. (copy in possession of Bureau of Reclamation, location of original unknown) 'AS CONSTRUCTED' PLANS OF 1949-1950, REHABILITATION OF TWIN LAKES RESERVOIR OUTLET WORKS, DETAILS OF UPSTREAM WING WALLS. - Twin Lakes Dam & Outlet Works, Beneath Twin Lakes Reservoir, T11S, R80W, S22, Twin Lakes, Lake County, CO

  5. Evolutionary Applications (in press, December 2008) Genomic Sister-Disorders of Neurodevelopment

    E-print Network

    Crespi, Bernard J.

    neurogenetic sister-disorders, including Williams syndrome, Velocardiofacial syndrome, and Smith-Magenis syndrome, as well as the X-chromosomal conditions Klinefelter and Turner syndromes. These data suggest of protein-coding genes, or selective sweeps, for three of the four sets of sister-syndromes analyzed

  6. Support groups for sisters and brothers of children with intellectual and developmental disabilities

    Microsoft Academic Search

    Régine Scelles; Evelyne Bouteyre; Clémence Dayan; Ingrid Picon

    2012-01-01

    This prospective study aimed at shedding some light on the functioning of French support groups for brothers and sisters of children with disabilities. Semi-structured interviews were conducted with the sisters, brothers and parents of children with disabilities along with care professionals. Focus groups were carried out with healthcare professionals directly involved in sibling support groups. The overall results showed that

  7. Support groups for sisters and brothers of children with intellectual and developmental disabilities

    Microsoft Academic Search

    Régine Scelles; Evelyne Bouteyre; Clémence Dayan; Ingrid Picon

    2011-01-01

    This prospective study aimed at shedding some light on the functioning of French support groups for brothers and sisters of children with disabilities. Semi?structured interviews were conducted with the sisters, brothers and parents of children with disabilities along with care professionals. Focus groups were carried out with healthcare professionals directly involved in sibling support groups. The overall results showed that

  8. Helium Isotope Compositions in Springs From the Three Sisters Region, Central Oregon, USA

    Microsoft Academic Search

    M. C. Van Soest; B. M. Kennedy; W. C. Evans; R. H. Mariner

    2001-01-01

    The Three Sisters region has recently come under increased scrutiny after the discovery by Satellite Radar Interferometry (InSAR) of a broad area of uplift centered approximately 5 km west of the South Sister volcanic edifice (Wicks et al., 2001). The bulge, which at its center reaches a maximum of 10 cm, formed between 1998-2000. The exact cause for the uplift

  9. Transient Sister Chromatid Separation and Elastic Deformation of Chromosomes during Mitosis in Budding Yeast

    Microsoft Academic Search

    Xiangwei He; Saurabh Asthana; Peter K. Sorger

    2000-01-01

    The accurate segregation of chromosomes at mitosis requires that all pairs of chromatids bind correctly to microtubules prior to the dissolution of sister cohesion and the initiation of anaphase. By analyzing the motion of GFP-tagged S. cerevisiae chromosomes, we show that kinetochore-microtubule attachments impose sufficient tension on sisters during prometaphase to transiently separate centromeric chromatin toward opposite sides of the

  10. President's Corner: Relationship of the IGS with our International Sister Societies

    E-print Network

    Zornberg, Jorge G.

    President's Corner: Relationship of the IGS with our International Sister Societies Dear member of the IGS, One of the important objectives we have agreed to pursue in the current council is to "Increase will enhance the coordination and collaboration with four important International Sister Societies: IGS News

  11. Support Groups for Sisters and Brothers of Children with Intellectual and Developmental Disabilities

    ERIC Educational Resources Information Center

    Scelles, Regine; Bouteyre, Evelyne; Dayan, Clemence; Picon, Ingrid

    2012-01-01

    This prospective study aimed at shedding some light on the functioning of French support groups for brothers and sisters of children with disabilities. Semi-structured interviews were conducted with the sisters, brothers and parents of children with disabilities along with care professionals. Focus groups were carried out with healthcare…

  12. SYSTEMATICS The Field Cricket Gryllus assimilis and Two New Sister Species

    E-print Network

    Gray, David A.

    SYSTEMATICS The Field Cricket Gryllus assimilis and Two New Sister Species (Orthoptera: Gryllidae. assimilis. KEY WORDS Gryllus, cryptic species, introduced species, sister species Gryllus Ă?eld crickets have U.S. Ă?eld crickets, whose taxonomy was settled by 1974 (Alexander 1957, Alexander and Bigelow 1960

  13. Sister chromatid exchange test detection of toxin-induced damage in cultured fish

    E-print Network

    Paris-Sud XI, Université de

    Sister chromatid exchange test detection of toxin-induced damage in cultured fish J Lobillo JV Animals; Toulouse-Auzeville, 10-13 July 1990) sister chromatid exchange (SCE) / genotoxicity / fish the effects of these wastes on the autochthonous cultured and wild fish species of the Southern Atlantic off

  14. Addressing the Apparent Paradox of the Catholic Sister Principal: 1940-1965

    ERIC Educational Resources Information Center

    O'Donoghue, Tom; Harford, Judith

    2013-01-01

    A body of scholarship on the history of the lives of Catholic teaching sisters has thrown up various challenges to educational historians. One challenge can be posed by asking how teaching sisters were able to go on to take up leadership positions. This is prompted by the observation that a particular body of literature for the period 1940-1965…

  15. Segregating Sister Genomes: The Molecular Biology of Chromosome Separation

    NSDL National Science Digital Library

    Kim Nasmyth (IMP; )

    2002-07-26

    During cell division, each daughter cell inherits one copy of every chromosome. Accurate transmission of chromosomes requires that the sister DNA molecules created during DNA replication are disentangled and then pulled to opposite poles of the cell before division. Defects in chromosome segregation produce cells that are aneuploid (containing an abnormal number of chromosomes)â??a situation that can have dire consequences. Aneuploidy is a leading cause of spontaneous miscarriages in humans and is also a hallmark of many human cancer cells. Recent work with yeast, Xenopus, and other model systems has provided new information about the proteins that control chromosome segregation during cell division and how the activities of these proteins are coordinated with the cell cycle.

  16. Telomere sister chromatid exchange in telomerase deficient murine cells

    SciTech Connect

    Wang, Yisong [ORNL; Giannone, Richard J [ORNL; Liu, Yie [ORNL

    2005-01-01

    We have recently demonstrated that several types of genomic rearrangements (i.e., telomere sister chromatid exchange (T-SCE), genomic-SCE, or end-to-end fusions) were more often detected in long-term cultured murine telomerase deficient embryonic stem (ES) cells than in freshly prepared murine splenocytes, even through they possessed similar frequencies of critically short telomeres. The high rate of genomic rearrangements in telomerase deficient ES cells, when compared to murine splenocytes, may reflect the cultured cells' gained ability to protect chromosome ends with eroded telomeres allowing them to escape 'end crisis'. However, the possibility that ES cells were more permissive to genomic rearrangements than other cell types or that differences in the microenvironment or genetic background of the animals might consequentially determine the rate of T-SCEs or other genomic rearrangements at critically short telomeres could not be ruled out.

  17. Tracking Blood Glucose and Predicting Prediabetes in Chinese Children and Adolescents: A Prospective Twin Study

    Microsoft Academic Search

    Guoying Wang; Lester Arguelles; Rong Liu; Shanchun Zhang; Wendy J. Brickman; Xiumei Hong; Hui-Ju Tsai; Binyan Wang; Houxun Xing; Zhiping Li; Xiping Xu; Xiaobin Wang

    2011-01-01

    We examined the tracking of blood glucose, the development of prediabetes, and estimated their genetic contributions in a prospective, healthy, rural Chinese twin cohort. This report includes 1,766 subjects (998 males, 768 females) aged 6–21 years at baseline who completed a 6-year follow-up study. Oral glucose tolerance test was performed for all subjects at both baseline and follow-up. We found

  18. Having a Brother or Sister with Down Syndrome: Perspectives from Siblings

    PubMed Central

    Skotko, Brian G.; Levine, Susan P.; Goldstein, Richard

    2012-01-01

    This study asks brothers and sisters about their feelings and perceptions toward their sibling with Down syndrome. We analyzed valid and reliable surveys from 822 brothers and sisters whose families were on the mailing lists of six non-profit Down syndrome organizations around the country. More than 96% of brothers/sisters that responded to the survey indicated that they had affection toward their sibling with Down syndrome; and 94% of older siblings expressed feelings of pride. Less than 10% felt embarrassed, and less than 5% expressed a desire to trade their sibling in for another brother or sister without Down syndrome. Among older siblings, 88% felt that they were better people because of their siblings with Down syndrome, and more than 90% plan to remain involved in their sibling’s lives as they become adults. The vast majority of brothers and sisters describe their relationship with their sibling with Down syndrome as positive and enriching. PMID:21910244

  19. Replication-Dependent Sister Chromatid Recombination in Rad1 Mutants of Saccharomyces Cerevisiae

    PubMed Central

    Kadyk, L. C.; Hartwell, L. H.

    1993-01-01

    Homolog recombination and unequal sister chromatid recombination were monitored in rad1-1/rad1-1 diploid yeast cells deficient for excision repair, and in control cells, RAD1/rad1-1, after exposure to UV irradiation. In a rad1-1/rad1-1 diploid, UV irradiation stimulated much more sister chromatid recombination relative to homolog recombination when cells were irradiated in the G(1) or the G(2) phases of the cell cycle than was observed in RAD1/rad1-1 cells. Since sister chromatids are not present during G(1), this result suggested that unexcised lesions can stimulate sister chromatid recombination events during or subsequent to DNA replication. The results of mating rescue experiments suggest that unexcised UV dimers do not stimulate sister chromatid recombination during the G(2) phase, but only when they are present during DNA replication. We propose that there are two types of sister chromatid recombination in yeast. In the first type, unexcised UV dimers and other bulky lesions induce sister chromatid recombination during DNA replication as a mechanism to bypass lesions obstructing the passage of DNA polymerase, and this type is analogous to the type of sister chromatid exchange commonly observed cytologically in mammalian cells. In the second type, strand scissions created by X-irradiation or the excision of damaged bases create recombinogenic sites that result in sister chromatid recombination directly in G(2). Further support for the existence of two types of sister chromatid recombination is the fact that events induced in rad1-1/rad1-1 were due almost entirely to gene conversion, whereas those in RAD1/rad1-1 cells were due to a mixture of gene conversion and reciprocal recombination. PMID:8454200

  20. The geography and ecology of plant speciation: range overlap and niche divergence in sister species.

    PubMed

    Anacker, Brian L; Strauss, Sharon Y

    2014-03-01

    A goal of evolutionary biology is to understand the roles of geography and ecology in speciation. The recent shared ancestry of sister species can leave a major imprint on their geographical and ecological attributes, possibly revealing processes involved in speciation. We examined how ecological similarity, range overlap and range asymmetry are related to time since divergence of 71 sister species pairs in the California Floristic Province (CFP). We found that plants exhibit strikingly different age-range correlation patterns from those found for animals; the latter broadly support allopatric speciation as the primary mode of speciation. By contrast, plant sisters in the CFP were sympatric in 80% of cases and range sizes of sisters differed by a mean of 10-fold. Range overlap and range asymmetry were greatest in younger sisters. These results suggest that speciation mechanisms broadly grouped under 'budding' speciation, in which a larger ranged progenitor gives rise to a smaller ranged derivative species, are probably common. The ecological and reproductive similarity of sisters was significantly greater than that of sister-non-sister congeners for every trait assessed. However, shifts in at least one trait were present in 93% of the sister pairs; habitat and soil shifts were especially common. Ecological divergence did not increase with range overlap contrary to expectations under character displacement in sympatry. Our results suggest that vicariant speciation is more ubiquitous in animals than plants, perhaps owing to the sensitivity of plants to fine-scale environmental heterogeneity. Despite high levels of range overlap, ecological shifts in the process of budding speciation may result in low rates of fine-scale spatial co-occurrence. These results have implications for ecological studies of trait evolution and community assembly; despite high levels of sympatry, sister taxa and potentially other close relatives, may be missing from local communities. PMID:24452025

  1. The geography and ecology of plant speciation: range overlap and niche divergence in sister species

    PubMed Central

    Anacker, Brian L.; Strauss, Sharon Y.

    2014-01-01

    A goal of evolutionary biology is to understand the roles of geography and ecology in speciation. The recent shared ancestry of sister species can leave a major imprint on their geographical and ecological attributes, possibly revealing processes involved in speciation. We examined how ecological similarity, range overlap and range asymmetry are related to time since divergence of 71 sister species pairs in the California Floristic Province (CFP). We found that plants exhibit strikingly different age-range correlation patterns from those found for animals; the latter broadly support allopatric speciation as the primary mode of speciation. By contrast, plant sisters in the CFP were sympatric in 80% of cases and range sizes of sisters differed by a mean of 10-fold. Range overlap and range asymmetry were greatest in younger sisters. These results suggest that speciation mechanisms broadly grouped under ‘budding’ speciation, in which a larger ranged progenitor gives rise to a smaller ranged derivative species, are probably common. The ecological and reproductive similarity of sisters was significantly greater than that of sister–non-sister congeners for every trait assessed. However, shifts in at least one trait were present in 93% of the sister pairs; habitat and soil shifts were especially common. Ecological divergence did not increase with range overlap contrary to expectations under character displacement in sympatry. Our results suggest that vicariant speciation is more ubiquitous in animals than plants, perhaps owing to the sensitivity of plants to fine-scale environmental heterogeneity. Despite high levels of range overlap, ecological shifts in the process of budding speciation may result in low rates of fine-scale spatial co-occurrence. These results have implications for ecological studies of trait evolution and community assembly; despite high levels of sympatry, sister taxa and potentially other close relatives, may be missing from local communities. PMID:24452025

  2. NOTE: Haemodynamic resistance model of monochorionic twin pregnancies complicated by acardiac twinning

    NASA Astrophysics Data System (ADS)

    Umur, Asli; van Gemert, Martin J. C.; van den Wijngaard, Jeroen P. H. M.; Ross, Michael G.; Nikkels, Peter G. J.

    2004-07-01

    An acardiac twin is a severely malformed monochorionic twin fetus that lacks most organs, particularly a heart. It grows during pregnancy, because it is perfused by its developmentally normal co-twin (called the pump twin) via a set of placental arterioarterial and venovenous anastomoses. The pump twin dies intrauterine or neonatally in about 50% of the cases due to congestive heart failure, polyhydramnios and prematurity. Because the pathophysiology of this pregnancy is currently incompletely understood, we modified our previous haemodynamic model of monochorionic twins connected by placental vascular anastomoses to include the analysis of acardiac twin pregnancies. We incorporated the fetoplacental circulation as a resistance circuit and used the fetal umbilical flow that perfuses the body to define fetal growth, rather than the placental flow as done previously. Using this modified model, we predicted that the pump twin has excess blood volume and increased mean arterial blood pressure compared to those in the acardiac twin. Placental perfusion of the acardiac twin is significantly reduced compared to normal, as a consequence of an increased venous pressure, possibly implying reduced acardiac placental growth. In conclusion, the haemodynamic analysis may contribute to an increased knowledge of the pathophysiologic consequences of an acardiac body mass for the pump twin.

  3. Identical twins with lumbosacral lipomyelomeningocele.

    PubMed

    Hanaei, Sara; Nejat, Farideh; Mortazavi, Abolghasem; Habibi, Zohreh; Esmaeili, Arash; El Khashab, Mostafa

    2015-01-01

    Lipomyelomeningocele, a congenital spine defect, is presented as skin-covered lipomatous tissue that attaches to the cord in different ways according to its subtypes. Unlike other types of neural tube defects, the exact cause of this birth defect has not been confirmed yet, but it is proposed to be a multifactorial disease with involvement of both genetic and environmental factors. The authors describe identical twins with lipomyelomeningocele of the same subtype and location without any familial history of similar abnormality. Therefore, the same genetic and/or environmental risk factors could have played a part in their condition. PMID:25396701

  4. Ectodermal dysplasia in identical twins

    PubMed Central

    Puttaraju, Gurkar Haraswarupa; Visveswariah, Paranjyothi Magadi

    2013-01-01

    Hereditary hypohidrotic ectodermal dysplasia (HED) is typically inherited as an X-linked recessive trait, characterized by deformity of at least two or more of the ectodermal structures - hair, teeth, nails and sweat glands. Two cases of hereditary HED involving identical male twins, is being documented for the rarity of its occurrence with special attention given to genetics, pathophysiology, clinical, intraoral manifestations and to the methods to improve the masticatory function, the facial esthetics and psychology of patients affected by this disease. PMID:23956595

  5. 77 FR 48993 - Proposed Collection; Comment Request; The Sister Study: A Prospective Study of the Genetic and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-15

    ...Collection; Comment Request; The Sister Study: A Prospective Study of the Genetic and Environmental Risk Factors for...Proposed Collection: Title: The Sister Study: A Prospective Study of the Genetic and Environmental Risk Factors...

  6. 77 FR 66851 - Submission for OMB Review; Comment Request The Sister Study: A Prospective Study of the Genetic...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-07

    ...OMB Review; Comment Request The Sister Study: A Prospective Study of the Genetic and Environmental Risk Factors for...Proposed Collection: Title: The Sister Study: A Prospective Study of the Genetic and Environmental Risk Factors...

  7. Coupling of twin rectangular supersonic jets

    Microsoft Academic Search

    Ganesh Raman; Ray Taghavi

    1998-01-01

    Twin jet plumes on aircraft can couple, producing dynamic pressures significant enough to cause structural fatigue. For closely spaced jets with a moderate aspect ratio (e.g. 5), previous work has established that two coupling modes (antisymmetric and symmetric) are kinematically permissible. However, the dynamics of twin-jet coupling have remained unexplored. In this paper a more fundamental assessment of the steady

  8. Information Processing Abilities in Twins Reared Apart.

    ERIC Educational Resources Information Center

    McGue, Matt; And Others

    1984-01-01

    A battery of information processing measures and psychometric tests of specific and general cognitive abilities was administered to 34 monozygotic and 13 dizygotic reared apart twin pairs or triplets. Correlations between information processing parameters and psychometric abilities as well as twin resemblances for the information processing…

  9. The power of the classical twin study

    Microsoft Academic Search

    N. G. MARTIN; L. J. EAVES; M. J. KEARSEY; P. DAVIESt

    1978-01-01

    A method based on the non-central chi-square distribution is developed for the calculation of sample sizes required to reject, with given probability, models of variation when they are “ wrong ”. The method is illustrated with reference to simple alternative models of variation in MZ and DZ twins reared together. Simulation of twin experiments finds the empirical power in good

  10. Twinning as a factor influencing personality

    Microsoft Academic Search

    L. Portenier

    1939-01-01

    The groups were too small to secure statistically reliable differences or to justify drawing any general conclusions. However, the findings tend to agree with studies involving larger groups of twins and suggest that growing up as a twin may be a handicap in making a wholesome adjustment.

  11. [Hungarian twin studies: results of four decades].

    PubMed

    Tárnoki, Ádám Domonkos; Tárnoki, Dávid László; Horváth, Tamás; Métneki, Júlia; Littvay, Levente

    2013-10-01

    Twin studies play a role in examining the contribution of genetic variations and environmental factors responsible for the determination of phenotypic variables and of genetic linkage between genotypes. Hungarian twin studies, supported by three twin registries (among them two twin-database), date back to 1970s. Studies mainly focused on various congenital abnormalities, the effect of contraceptive pills and folic acid on the frequency of twin pregnancies, as well as psychosexual and alcohol consumptional behaviors. Monogenic Mendelian inheritance of lactose (mal)absorption was demonstrated for the first time. Hungarian Twin Registry was founded in 2007, which contributed to the current understanding on the background of several disorders, e.g. metabolic syndrome and atherosclerosis. As part of an international twin study, among others, arterial stiffness, central blood pressure, carotid intima/media thickness, venous biomechanics, body composition, lung function and smoking characteristics were also assessed. Absence of genetic background in non-alcoholic fatty liver disease and high inheritance of carotid plaque characteristics were demonstrated for the first time. The review also aims to summarize future plans of the Hungarian Twin Registry. PMID:24077161

  12. Characteristics of women lost to follow-up in cardiovascular community health interventions: findings from the Sister to Sister campaign.

    PubMed

    Naderi, Sahar; Johnson, Caitlin E; Rodriguez, Fátima; Wang, Yun; Pollin, Irene; Foody, JoAnne M

    2013-06-01

    Community-based interventions (CBI) have been targeted as a potential means of tackling cardiovascular disease in women. However, there have been mixed results in terms of their impact on health, with at least some of this being attributed to high attrition rates. This study explores factors that may be contributing to the low retention of women in cardiovascular CBIs. In 2009, Sister to Sister, a national organization that sponsors community health fairs, provided free cardiovascular health screenings for a total of 9,443 women nationwide. All participants were invited to enroll in a 1 year, survey-based observational study to assess the effectiveness of these community health screenings. Of these 9,443 women, 5.9 % actively participated in the follow-up study. Participants were more likely to have health insurance (75.5 vs. 65.3 %, p < 0.001), have an annual income above 75,000 dollars (26.7 vs. 19.7 %, p < 0.001), and identify themselves as white (50.0 vs. 31.5 %, p < 0.001). They were also more likely to have hypertension (32.1 vs. 27.4 %, p = 0.018) and metabolic syndrome (35.7 vs. 20.4 %, p < 0.001). Our results suggest that white, affluent women with health insurance and cardiovascular risk factors are more likely to engage in CBIs that require longitudinal assessment. This study gives insight into the demographics, socioeconomic status, and cardiovascular comorbidities of women who participate in cardiovascular CBIs. The results may prove to be useful in understanding the biopsychosocial barriers to participation in CBIs in order to develop more effective interventions in the future. PMID:23314921

  13. Influence of mode of delivery on twin births.

    PubMed

    Adinma, J I; Agbai, A O

    1996-12-01

    The mode of delivery and outcome in 158 twin births in a Nigerian sub-urban hospital are reviewed. Apgar scores at one minute were significantly higher for twin 1 compared to twin 2 in vertex deliveries only. There was no significant difference in Apgar scores at 5 minutes between the twins for the various modes of delivery. Apgar scores were generally higher for the controls (a set of singleton births) compared to twin births for all the modes of delivery except breech births. Birth weights were also significantly higher for controls compared to twin births although no significant difference occurred between the twins. Perinatal mortality rates were generally higher for twin 2 compared to twin 1, and for the twins compared to controls irrespective of mode of delivery. Better outcome could not be ascribed to any particular mode of delivery in twin births and would depend on the judgement and expertise of the labour attendant. PMID:9532311

  14. Specific language disorders in twins during childhood.

    PubMed

    Bernabei, P

    1976-01-01

    The delay in the development of the language often found in twins is usually interpreted as being strictly connected with the twinning situation and on the assumption that a model of verbal, tendentially cryptophasic, communication would more easily exist between twins. Two types of language pathology in twins, diverging from this classic framework, are presented: (1) Developmental dyslalia (or developmental dysarthria); in these cases no abnormality could be found in the modality of verbal communication between the cotwin; (2) developmental dysphasia; in these cases not only no tendency toward cryptophasia was observed, but indeed the verbal communication between the twins was markedly reduced. These two types of language disorders, as well as the classic one, are discussed in the light of a neurolinguistic interpretation. PMID:1036385

  15. Déjŕ vu: is your patient a twin?

    PubMed

    Susak, Stamenko; Velicki, Lazar; Majin, Marijan; Burazor, Ivana

    2010-10-01

    Coronary artery disease is the leading cause of death worldwide. Hereditary and environmental factors have a strong impact on coronary artery disease development. The exact incidence of this disease and its characteristics among identical twins is unknown. Despite a limited amount of documented cases, several characteristics can be drawn: coronary artery disease is expressed at an early age, the onset of symptoms occurs within a short time span between the twins, the coronary pathology is often very similar and the metabolic and biochemical profiles are generally alike. We present a case of identical male twins with a near simultaneous clinical presentation of coronary artery disease, who initially underwent unsuccessful percutaneous coronary intervention due to chronic total occlusion and finally, coronary artery bypass grafting. In the case of identical twins, it is imperative to aggressively screen the asymptomatic twin of the symptomatic patient irrespective of young age or absence of symptoms. PMID:21125983

  16. Highlights from the 15th International Congress of Twin Studies/Twin Research: Differentiating MZ Co-twins Via SNPs; Mistaken Infant Twin-Singleton Hospital Registration; Narcolepsy With Cataplexy; Hearing Loss and Language Learning/Media Mentions: Broadway Musical Recalls Conjoined Hilton Twins; High Fashion Pair; Twins Turn 102; Insights From a Conjoined Twin Survivor.

    PubMed

    Segal, Nancy L

    2015-02-01

    Highlights from the 15th International Congress of Twin Studies are presented. The congress was held November 16-19, 2014 in Budapest, Hungary. This report is followed by summaries of research addressing the differentiation of MZ co-twins by single nucleotide polymorphisms (SNPs), an unusual error in infant twin-singleton hospital registration, twins with childhood-onset narcolepsy with cataplexy, and the parenting effects of hearing loss in one co-twin. Media interest in twins covers a new Broadway musical based on the conjoined twins Violet and Daisy Hilton, male twins becoming famous in fashion, twins who turned 102 and unique insights from a conjoined twin survivor. This article is dedicated to the memory of Elizabeth (Liz) Hamel, DZA twin who met her co-twin for the first time at age seventy-eight years. Liz and her co-twin, Ann Hunt, are listed in the 2015 Guinness Book of Records as the longest separated twins in the world. PMID:25662422

  17. Twin study of dissociative experience.

    PubMed

    Jang, K L; Paris, J; Zweig-Frank, H; Livesley, W J

    1998-06-01

    The relative influence of genetic and environmental influences on measures of pathological and nonpathological dissociative experience was estimated using a classic twin-study design. Subjects were 177 monozygotic and 152 dizygotic volunteer general population twin pairs who completed two measures of dissociative capacity identified from the items comprising the Dissociative Experiences Scale (DES). Additive genetic influences accounted for 48% and 55% of the variance in scales measuring pathological and nonpathological dissociative experience, respectively. Heritability estimates did not differ by gender. The genetic correlation between these measures was estimated at .91, suggesting common genetic factors underlying pathological and nonpathological dissociative capacity. Genetic and environmental correlations between the DES scales and measures of personality disorder traits (Dimensional Assessment of Personality Pathology-Basic Questionnaire; DAPP-BQ) were also estimated. Significant genetic correlations (median = .38) were found between the DES scales and DAPP-BQ cognitive dysregulation, affective lability, and suspiciousness, suggesting that the genetic factors underlying particular aspects of personality disorder also influence dissociative capacity. PMID:9653418

  18. Niobium and tantalum: indispensable twins

    USGS Publications Warehouse

    Schulz, Klaus; Papp, John

    2014-01-01

    Niobium and tantalum are transition metals almost always paired together in nature. These “twins” are difficult to separate because of their shared physical and chemical properties. In 1801, English chemist Charles Hatchett uncovered an unknown element in a mineral sample of columbite; John Winthrop found the sample in a Massachusetts mine and sent it to the British Museum in London in 1734. The name columbium, which Hatchet named the new element, came from the poetic name for North America—Columbia—and was used interchangeably for niobium until 1949, when the name niobium became official. Swedish scientist Anders Ekberg discovered tantalum in 1802, but it was confused with niobium, because of their twinned properties, until 1864, when it was recognized as a separate element. Niobium is a lustrous, gray, ductile metal with a high melting point, relatively low density, and superconductor properties. Tantalum is a dark blue-gray, dense, ductile, very hard, and easily fabricated metal. It is highly conductive to heat and electricity and renowned for its resistance to acidic corrosion. These special properties determine their primary uses and make niobium and tantalum indispensable.

  19. Enjoy Living Healthy Hearts, Healthy Homes

    E-print Network

    Bandettini, Peter A.

    on teeth and fingers. Prevent wrinkles. What Pedro Learned About Smoking #12;Enjoy Living Smoke Free 3 How will be born sick. #12;4 Healthy Hearts, Healthy Homes What should you expect when you quit smoking? Nicotine smoking, getting rid of the nicotine in your body can make you feel sick. Tell your doctor that you

  20. Women in-between' (Strathern, 1995): the ambiguous position of the sister tutor, 1918-1960.

    PubMed

    Brooks, Jane

    2007-02-01

    The purpose of this article is to explore the ambiguous position of sister tutors, within the nursing and hospital hierarchy between 1918 and 1960. The function of the sister tutor was to train the probationers (student nurses). However, I will argue that the students' education was to come second to the service needs of the hospital, the authority of the matron and desire of the medical profession to maintain control over the nursing curriculum and nursing practice. Therefore sister tutors were caught 'in-between' several opposing forces which together militated against the individual sister tutor's work and the ability of the nursing profession to recruit adequate numbers of senior nurses into the classroom. The recruitment issue was further hampered by the widespread knowledge that much of the sister tutor's work was not student education at all, but organising lectures by medical staff and marking students' notes. In order to gauge the 'official' attitudes to the sister tutors and also the experiences of those who either worked as sister tutors or were taught by them, I used both archival and oral evidence in the research for this article. Pseudonyms have been used throughout for the oral history respondents. PMID:16766093

  1. Links Between Sisters’ Sexual and Dating Victimization: The Roles of Neighborhood Crime and Parental Controls

    PubMed Central

    East, Patricia L.; Chien, Nina C.; Adams, Joyce A.; Hokoda, Audrey; Maier, Ashley

    2013-01-01

    This study examined the extent to which a sister’s prior sexual and dating victimization is a risk factor for young women being similarly victimized and the possible factors underlying a co-occurrence. The sample involved 122 young adult Latina or African American sister pairs (244 women; ages 16–25) who resided in low-income, urban neighborhoods. Results indicated that women whose sisters had been victimized had increased risk of victimization even after controlling for neighborhood crime, parental controls, age and race–ethnicity (odds ratios were 4.0 for unwanted touching, 6.2 for a forced sex act, and 16.7 for dating violence). In high-crime neighborhoods, the presence of two adult parent figures in the home was associated with women’s reduced likelihood of unwanted touching, and mothers’ high monitoring during adolescence was associated with women’s lower risk of dating aggression. Survival analysis results showed that the risk period of a second sister being victimized lasts between 7 and 10 years after a first sister’s victimization. The prevention implications of study findings are discussed. PMID:21171768

  2. NOTE: Modelling the influence of amnionicity on the severity of twin twin transfusion syndrome in monochorionic twin pregnancies

    NASA Astrophysics Data System (ADS)

    van den Wijngaard, Jeroen P. H. M.; Umur, Asli; Ross, Michael G.; van Gemert, Martin J. C.

    2004-03-01

    Clinical treatment for diamniotic monochorionic twin twin transfusion syndrome (TTTS) may include conversion of diamniotic pregnancies to a monoamniotic monochorionic state by disrupting the amnion septum. We sought to test the underlying hypothesis, i.e. that a monoamniotic state reduces the severity of TTTS. With use of our previously developed mathematical model of two equal fetoplacental circulatory units connected by various sizes and types of placental anastomoses, we compared the haemodynamic and amniotic fluid dynamics of monoamniotic and diamniotic twins that develop TTTS. We used three anastomotic patterns that produce severe, moderate or mild forms of TTTS, respectively, in our diamniotic monochorionic twin model. Monoamnionicity was modelled by adding the two amniotic fluid volumes and using the volume-averaged amniotic fluid osmolality. The results were as follows: for severe TTTS, small differences develop between diamniotic and monoamniotic donor twins in fetal urine production, swallowed volume, blood volume, blood pressures, net fetofetal transfusion, and blood and amniotic fluid osmolality. However, the circulatory imbalance between the monoamniotic twins deteriorates similar to that of diamniotic twins. The pathophysiological differences tend to disappear for milder TTTS. In conclusion, our model suggests that the uncommon finding of TTTS in monoamniotic twins is not due to the presence of a single amniotic sac. Rather, clinically significant differences in anastomotic patterns and the delayed or lack of identification of manifestations in monoamniotic twins account for the reduced rate of TTTS diagnosis. Based on these results we expect the clinical disruption of the amnion septum in diamniotic monochorionic TTTS pregnancies to have only minimal benefits.

  3. NOTE: Thrombosis of anastomoses may affect the staging sequence of twin twin transfusion syndrome

    NASA Astrophysics Data System (ADS)

    van den Wijngaard, Jeroen P. H. M.; Ross, Michael G.; van Gemert, Martin J. C.

    2008-03-01

    Twin-twin transfusion syndrome (TTTS) is a severe complication of monozygotic (identical) twins, which share one single monochorionic placenta. It is caused by placental anastomoses which link the two fetoplacental circulations of the twins and allow a chronic net inter-twin transfusion to develop between the fetuses. Clinical presentation of TTTS manifestations has been classified into five different stages. In this paper, we used our computational model of TTTS and examined the possible differences between chronic and rapidly increasing inter-twin transfusion in the simulated TTTS staging sequence. Our results suggest that rapid alterations in the net inter-twin transfusion, e.g. due to thrombosis of placental anastomoses, may produce a different staging sequence than in TTTS caused by chronic inter-twin transfusion. These results may aid an improved knowledge of TTTS pathophysiology under conditions of a rapidly changing cardiovascular function, and contribute to the planning of optimal intervention under such circumstances. Supported in part by the European Community Euro-twin-2-twin project (JPHMvdW) and by the National Institutes of Health, grant HL40899 (MGR).

  4. Increased UV-induced sister-chromatid exchange in cultured fibroblasts of first-degree relatives of melanoma patients

    SciTech Connect

    Knees-Matzen, S.; Roser, M.; Reimers, U.; Ehlert, U.; Weichenthal, M.; Breitbart, E.W.; Ruediger, H.W. (Department of Occupational Medicine, University of Hamburg (Germany))

    1991-06-01

    Cultured fibroblasts of 17 first-degree relatives of familial melanoma patients and six first-degree relatives of cutaneous melanoma (CMM) patients with multiple CMM primaries were tested for in vitro sensitivity to UV light. Fibroblasts of nine familial CMM patients with a known UV-sensitivity and 19 healthy probands served as a control. Sister chromatid exchange (SCE) was used as a parameter to detect UV-induced genotoxic damage. The authors found significantly (p less than 0.001) increased UV-induced SCE levels in familial melanoma patients, as well as in first-degree relatives of familial melanoma patients (p less than 0.001) after UV-A,B irradiation (375 J/m2), compared to the healthy probands without a family history of CMM. A significant (p less than 0.001) increase of UV-induced SCE was also observed in the relatives of CMM patients with multiple CMM primaries. In addition, the spontaneous SCE were significantly increased (p less than 0.05) in familial CMM patients. This study shows that increased UV sensitivity is a familial phenomenon. It is consistent with the concept of a genetic predisposition to CMM, which is based on increased UV sensitivity and may help to define groups with an elevated risk of developing cutaneous malignant melanoma.

  5. 156. Photocopy of written record (taken from Twin Falls Canal ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    156. Photocopy of written record (taken from Twin Falls Canal Company, Low Line Book #1, pp.2,3). LOW LINE CONTRACTORS AND BORROW RECORD. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  6. Phenotypically Concordant and Discordant Monozygotic Twins Display Different

    E-print Network

    Crasto, Chiquito

    , is an understudied aspect of genome biology. Any differences in the genetic makeup between twins derived from. Monozygotic (MZ) twins represent an important resource in genetic studies related to normal development twins are genetically identical and that phenotypic differences between twins are mainly due

  7. ARTICLE AVAILABLE ONLINE Twin Research and Human Genetics

    E-print Network

    Nyholt, Dale R.

    ARTICLE AVAILABLE ONLINE Twin Research and Human Genetics Volume 14 | Number 5 | pp. 408­416 408). Variation in BMPR1B, TGFRB1 and BMPR2 and control of dizygotic twinning. Twin Research and Human Genetics, 14, 408­416. DOI 10.1375/twin.14.5.408 Genes in the TGF9 signaling pathway play important roles

  8. 136. FORKS DIVERSION, HIGH LINE AND LOW LINE CANALS, TWIN ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    136. FORKS DIVERSION, HIGH LINE AND LOW LINE CANALS, TWIN FALLS COUNTY, SOUTH OF HANSEN, IDAHO; HIGH LINE GATES FROM THE CANAL SIDE. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  9. 160. Photocopy of drawing (taken from Twin Falls Canal Company ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    160. Photocopy of drawing (taken from Twin Falls Canal Company Field Book #361 #86, page 1). SCALE DRAWING, CANAL HEADGATES AND CANAL SURVEY, 'A' LINE. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  10. Twin Estimates for Slopes Humberto Mu~noz

    E-print Network

    Kearfott, R. Baker

    Twin Estimates for Slopes by Humberto Mu~noz R. Baker Kearfott, rbk@louisiana.edu Department author's Ph.D. dissertation Interval Slopes and Twin Slope Arithmetic in Nonsmooth Optimization, University of Louisiana at Lafayette, 2001. Twin Estimates for Slopes May 25, VC02­1 #12;What is Twin

  11. 121. MCMULLEN CREEK DRAW, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    121. MCMULLEN CREEK DRAW, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, IDAHO; OUTLET SIDE OF CREEK, SOUTH VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  12. 116. ROCK CREEK SIPHON LOW LINE CANAL, TWIN FALLS COUNTY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    116. ROCK CREEK SIPHON LOW LINE CANAL, TWIN FALLS COUNTY, SOUTH OF KIMBERLY IDAHO; CLOSE-UP OF OUTLET, DIVERSION SPILL IN BACKGROUND, WEST VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  13. 118. COTTONWOOD CREEK SPILL, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    118. COTTONWOOD CREEK SPILL, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, IDAHO; WEST VIEW OF GATES ON HIGH LINE CANAL. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  14. 120. COTTONWOOD CUT AREA, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    120. COTTONWOOD CUT AREA, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, IDAHO; OVERALL VIEW OF THE COTTONWOOD CREEK DRAW, SOUTH VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  15. 110. ROCK CREEK SIPHON, LOW LINE CANAL, TWIN FALLS COUNTY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    110. ROCK CREEK SIPHON, LOW LINE CANAL, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, IDAHO; INLET SIDE WEST VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  16. 130. FORKS DIVERSION, HIGH LINE AND LOW LINE CANALS, TWIN ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    130. FORKS DIVERSION, HIGH LINE AND LOW LINE CANALS, TWIN FALLS COUNTY, SOUTH OF HANSEN, IDAHO; OUTLET SIDE OF THE HIGH LINE GATES, NORTH VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  17. 28. VIEW FROM IMMEDIATELY DOWNSTREAM OF TWIN FALLS MAIN CANAL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    28. VIEW FROM IMMEDIATELY DOWNSTREAM OF TWIN FALLS MAIN CANAL HEADWORKS WITH CANAL BRIDGE IN DISTANCE. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  18. Climate Action Plan for the University of Minnesota, Twin Cities

    E-print Network

    Webb, Peter

    Climate Action Plan for the University of Minnesota, Twin Cities Version 1.1 - December 2011 #12 for the Twin Cities campus. Sincerely, Eric W. Kaler President #12;University of Minnesota Twin Cities Campus Climate Action Plan v. 1.1 - Page 3 of 28 Foreword In December 2010 the University of Minnesota, Twin

  19. 104. DRY CREEK OUTLET (SPILL), TWIN FALLS COUNTY, SOUTH OF ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    104. DRY CREEK OUTLET (SPILL), TWIN FALLS COUNTY, SOUTH OF MURTAUGH, IDAHO; OUTLET FOR MURTAUGH LAKE, SOUTHEAST VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  20. 88. CEDAR DRAW SPILL, HIGH LINE CANAL, TWIN FALLS COUNTY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    88. CEDAR DRAW SPILL, HIGH LINE CANAL, TWIN FALLS COUNTY, SOUTH OF FILER, IDAHO; WEST VIEW OF CANAL AND GATES. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  1. 106. DRY CREEK SPILL, MURTAUGH LAKE, TWIN FALLS COUNTY, SOUTH ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    106. DRY CREEK SPILL, MURTAUGH LAKE, TWIN FALLS COUNTY, SOUTH OF MURTAUGH, IDAHO; CLOSE-UP OF GATES, NORTHWEST VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  2. 93. ROCK CREEK SIPHON, LOW LINE CANAL, TWIN FALLS COUNTY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    93. ROCK CREEK SIPHON, LOW LINE CANAL, TWIN FALLS COUNTY SOUTH OF KIMBERLY, IDAHO; OVERALL NORTHEAST VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  3. 25. TWIN FALLS MAIN CANAL HEADWORKS FROM UPSTREAM LOOKING TOWARD ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    25. TWIN FALLS MAIN CANAL HEADWORKS FROM UPSTREAM LOOKING TOWARD THE WEST (DAM-TENDER RICHARD CARL ADJUSTING THE GATES TO ALLOW 3400 CFS THROUGH). - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  4. TWIN BUILDING LATTICES DO NOT HAVE ASYMPTOTIC CUT-POINTS

    E-print Network

    Caprace, Pierre-Emmanuel

    TWIN BUILDING LATTICES DO NOT HAVE ASYMPTOTIC CUT-POINTS PIERRE-EMMANUEL CAPRACE*, FRANĂ?OIS DAHMANI**, AND VINCENT GUIRARDEL** Abstract. We show that twin building lattices have linear divergence, which implies of asymptotic cones of twin building lattices. Theorem 1. The asymptotic cones of a twin building lattice do

  5. 101. DRY CREEK SPILL, MURTAUGH LAKE, TWIN FALLS COUNTY, SOUTH ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    101. DRY CREEK SPILL, MURTAUGH LAKE, TWIN FALLS COUNTY, SOUTH OF MURTAUGH, IDAHO; NORTHEAST VIEW OF DRY CREEK OUTLET. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  6. 119. COTTONWOOD CREEK SIPHON, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    119. COTTONWOOD CREEK SIPHON, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, IDAHO; INLET SIDE OF COTTONWOOD CREEK, SOUTH VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  7. 8. BRIDGEWORK PLANKING FROM EAST SIDE WITH TWIN FALLS MAIN ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. BRIDGEWORK PLANKING FROM EAST SIDE WITH TWIN FALLS MAIN CANAL HEADWORKS IN DISTANCE; LOOKING WEST. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  8. 117. COTTONWOOD CREEK SPILL, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    117. COTTONWOOD CREEK SPILL, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, IDAHO; CLOSE-UP OF OUTLET SIDE OF SPILL, SOUTH VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  9. 102. MURTAUGH LAKE HEADGATES, TWIN FALLS COUNTY, SOUTH OF MURTAUGH, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    102. MURTAUGH LAKE HEADGATES, TWIN FALLS COUNTY, SOUTH OF MURTAUGH, IDAHO; LAKE SIDE OF HEADGATES, NORTHWEST VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  10. 131. FORKS DIVERSION, HIGH LINE AND LOW LINE CANALS, TWIN ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    131. FORKS DIVERSION, HIGH LINE AND LOW LINE CANALS, TWIN FALLS COUNTY, SOUTH OF HANSEN, IDAHO; INLET SIDE OF LOW LINE CANAL, WEST VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  11. 122. MCMULLEN CREEK, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, IDAHO; ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    122. MCMULLEN CREEK, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, IDAHO; INLET SIDE OF THE CREEK, ENTRANCE INTO THE HIGH LINE CANAL, SOUTH VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  12. 90. CEDAR DRAW SPILL, HIGH LINE CANAL, TWIN FALLS COUNTY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    90. CEDAR DRAW SPILL, HIGH LINE CANAL, TWIN FALLS COUNTY, SOUTH OF FILER, IDAHO; CLOSE-UP OF GATES. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  13. 109. CEDAR DRAW SPILL, LOW LINE CANAL, TWIN FALLS COUNTY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    109. CEDAR DRAW SPILL, LOW LINE CANAL, TWIN FALLS COUNTY, SOUTH OF FILER, IDAHO; OVERALL VIEW LOOKING WEST. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  14. 111. ROCK CREEK SIPHON LOW LINE CANAL, TWIN FALLS COUNTY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    111. ROCK CREEK SIPHON LOW LINE CANAL, TWIN FALLS COUNTY, SOUTH OF KIMBERLY IDAHO; OVERALL VIEW OF SIPHON, EAST VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  15. 89. CEDAR DRAW SPILL, HIGH LINE CANAL, TWIN FALLS COUNTY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    89. CEDAR DRAW SPILL, HIGH LINE CANAL, TWIN FALLS COUNTY, SOUTH OF FILER, IDAHO; OUTLET SIDE OF CANAL, SOUTHWEST VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  16. 129. COTTONWOOD CREEK SIPHON, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    129. COTTONWOOD CREEK SIPHON, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, IDAHO; OUTLET SIDE OF SIPHON UNDER CANAL. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  17. 91. CEDAR DRAW SPILL, HIGH LINE CANAL, TWIN FALLS COUNTY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    91. CEDAR DRAW SPILL, HIGH LINE CANAL, TWIN FALLS COUNTY, SOUTH OF FILER, IDAHO; NORTHEAST VIEW OF CANAL AND GATES. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  18. 105. MURTAUGH LAKE, TWIN FALLS COUNTY, SOUTH OF MURTAUGH, IDAHO; ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    105. MURTAUGH LAKE, TWIN FALLS COUNTY, SOUTH OF MURTAUGH, IDAHO; NORTHWEST VIEW OF LAKE AND HEADGATES. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  19. 124. MCMULLEN CREEK HIGH LINE CANAL, TWIN FALLS COUNTY, SOUTH ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    124. MCMULLEN CREEK HIGH LINE CANAL, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, IDAHO; OVERALL SOUTH VIEW OF DRAW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  20. 103. DRY CREEK SPILL, TWIN FALLS COUNTY, SOUTH OF MURTAUGH, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    103. DRY CREEK SPILL, TWIN FALLS COUNTY, SOUTH OF MURTAUGH, IDAHO; INLET SIDE TO DRY CREEK, SOUTH VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  1. 113. ROCK CREEK SIPHON LOW LINE CANAL, TWIN FALLS COUNTY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    113. ROCK CREEK SIPHON LOW LINE CANAL, TWIN FALLS COUNTY, SOUTH OF KIMBERLY IDAHO; CLOSE-UP OF INLET SIDE OF SIPHON, NORTHWEST VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  2. 94. CEDAR DRAW SPILL, LOW LINE CANAL, TWIN FALLS COUNTY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    94. CEDAR DRAW SPILL, LOW LINE CANAL, TWIN FALLS COUNTY SOUTH OF FILER, IDAHO; CLOSE-UP OF GATES FROM THE CANAL SIDE. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  3. 95. CEDAR DRAW SPILL, LOW LINE CANAL, TWIN FALLS COUNTY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    95. CEDAR DRAW SPILL, LOW LINE CANAL, TWIN FALLS COUNTY SOUTH OF FILER, IDAHO; OVERALL VIEW LOOKING EAST. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  4. 115. ROCK CREEK SIPHON LOW LINE CANAL, TWIN FALLS COUNTY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    115. ROCK CREEK SIPHON LOW LINE CANAL, TWIN FALLS COUNTY, SOUTH OF KIMBERLY IDAHO; WEST VIEW OF SIPHON CROSSING ROCK CREEK. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  5. 123. MCMULLEN CREEK, HIGH LINE CANAL, TWIN FALLS COUNTY, SOUTH ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    123. MCMULLEN CREEK, HIGH LINE CANAL, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, IDAHO; SOUTH VIEW OF THE CREEK EMPTYING INTO THE HIGH LINE CANAL. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  6. 96. CEDAR DRAW SPILL, LOW LINE CANAL, TWIN FALLS COUNTY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    96. CEDAR DRAW SPILL, LOW LINE CANAL, TWIN FALLS COUNTY SOUTH OF FILER, IDAHO; OUTLET SIDE OF CEDAR DRAW, WEST VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  7. 92. CEDAR DRAW SPILL, HIGH LINE CANAL, TWIN FALLS COUNTY ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    92. CEDAR DRAW SPILL, HIGH LINE CANAL, TWIN FALLS COUNTY SOUTH OF FILER, IDAHO; CLOSE-UP OF OUTLET SIDE OF GATES, SOUTH VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  8. Twin relationships in Parsimonious Games: some results Flavio Pressaccoa

    E-print Network

    Boyer, Edmond

    Twin relationships in Parsimonious Games: some results Flavio Pressaccoa , Giacomo Plazzottab, Isbell introduced a twin relationship based on transposition properties of the incidence matrices upon of some results on twin games presented in this paper. In detail we show that a) twin games have the same

  9. 126. COTTONWOOD CREEK SIPHON, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    126. COTTONWOOD CREEK SIPHON, TWIN FALLS COUNTY, SOUTH OF KIMBERLY, IDAHO; CLOSE-UP OF OUTLET SIDE OF SIPHON, SOUTH VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  10. 112. ROCK CREEK SIPHON LOW LINE CANAL, TWIN FALLS COUNTY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    112. ROCK CREEK SIPHON LOW LINE CANAL, TWIN FALLS COUNTY, SOUTH OF KIMBERLY IDAHO; OUTLET SIDE, EAST VIEW. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  11. 114. ROCK CREEK SIPHON LOW LINE CANAL, TWIN FALLS COUNTY, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    114. ROCK CREEK SIPHON LOW LINE CANAL, TWIN FALLS COUNTY, SOUTH OF KIMBERLY IDAHO; OVERALL VIEW, WEST OF INLET SIDE. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  12. Periodically twinned SiC nanowires

    NASA Astrophysics Data System (ADS)

    Wang, Dong-Hua; Xu, Di; Wang, Qing; Hao, Ya-Juan; Jin, Guo-Qiang; Guo, Xiang-Yun; Tu, K. N.

    2008-05-01

    Twinning has been recognized to be an important microstructural defect in nanoscale materials. Periodically twinned SiC nanowires were largely synthesized by the carbothermal reduction of a carbonaceous silica xerogel prepared from tetraethoxysilane and biphenyl with iron nitrate as an additive. The twinned ?-SiC nanowires, with a hexagonal cross section, a diameter of 50-300 nm and a length of tens to hundreds of micrometers, feature a zigzag arrangement of periodically twinned segments with a rather uniform thickness along the entire growth length. Computer simulation has been used to generate three-dimensional atomic structures of the zigzag columnar twin structure by the stacking of hexagonal discs of {111} planes of SiC. A minimum surface energy and strain energy argument is proposed to explain the formation of periodic twins in the SiC nanowires. The thickness of the periodic twinned segments is found to be linearly proportional to the nanowire diameter, and a constant volume model is proposed to explain the relation.

  13. Periodically twinned SiC nanowires.

    PubMed

    Wang, Dong-Hua; Xu, Di; Wang, Qing; Hao, Ya-Juan; Jin, Guo-Qiang; Guo, Xiang-Yun; Tu, K N

    2008-05-28

    Twinning has been recognized to be an important microstructural defect in nanoscale materials. Periodically twinned SiC nanowires were largely synthesized by the carbothermal reduction of a carbonaceous silica xerogel prepared from tetraethoxysilane and biphenyl with iron nitrate as an additive. The twinned ?-SiC nanowires, with a hexagonal cross section, a diameter of 50-300 nm and a length of tens to hundreds of micrometers, feature a zigzag arrangement of periodically twinned segments with a rather uniform thickness along the entire growth length. Computer simulation has been used to generate three-dimensional atomic structures of the zigzag columnar twin structure by the stacking of hexagonal discs of {111} planes of SiC. A minimum surface energy and strain energy argument is proposed to explain the formation of periodic twins in the SiC nanowires. The thickness of the periodic twinned segments is found to be linearly proportional to the nanowire diameter, and a constant volume model is proposed to explain the relation. PMID:21730575

  14. Twin and Triplet Drugs in Opioid Research

    NASA Astrophysics Data System (ADS)

    Fujii, Hideaki

    Twin and triplet drugs are defined as compounds that contain respectively two and three pharmacophore components exerting pharmacological effects in a molecule. The twin drug bearing the same pharmacophores is a "symmetrical twin drug", whereas that possessing different pharmacophores is a "nonsymmetrical twin drug." In general, the symmetrical twin drug is expected to produce more potent and/or selective pharmacological effects, whereas the nonsymmetrical twin drug is anticipated to show both pharmacological activities stemming from the individual pharmacophores (dual action). On the other hand, nonsymmetrical triplet drugs, which have two of the same pharmacophores and one different moiety, are expected to elicit both increased pharmacological action and dual action. The two identical portions could bind the same receptor sites simultaneously while the third portion could bind a different receptor site or enzyme. This review will mainly focus on the twin and triplet drugs with an evaluation of their in vivo pharmacological effects, and will also include a description of their pharmacology and synthesis.

  15. The Sri Lankan Twin Registry: 2012 update.

    PubMed

    Sumathipala, Athula; Siribaddana, Sisira; Hotopf, Mathew; McGuffin, Peter; Glozier, Nick; Ball, Harriet; Kovas, Yulia; Rijsdijk, Fruhling; Yatawara, Lalani; Pariante, Carmine; Zavos, Helena; Siriwardhana, Chesmal; Pannala, Gayani; Jayaweera, Kaushalya; Adikari, Anushka; Gunewardane, Dinesha

    2013-02-01

    The Sri Lankan Twin Registry (SLTR), established in 1997, is a unique resource for twin and genetic research in a low- and middle-income country (LMIC). It comprises of a volunteer cohort of 14,120 twins (7,060 pairs) and 119 sets of triplets, and a population-based cohort of 19,040 (9,520 pairs) twins and 89 sets of triplets. Several studies have been conducted using this registry, including the Colombo Twin and Singleton Study (CoTaSS 1; 4,387 twins, 2,311 singletons), which have explored the prevalence and heritability of a range of psychiatric disorders as well as gene-environmental interplay. Currently, a follow-up study (CoTaSS 2) of the same cohort is underway, looking at the prevalence and interrelationship of key cardiovascular and metabolic risk markers (e.g., metabolic syndrome). A significant feature of CoTaSS 2 is the establishment of a biobank. Current SLTR work is extending beyond mental health and the interface between mental and physical health to new horizons, extending collaborations with the wider global twin research community. Ethics and governance have been given special emphasis in the initiative. Capacity building and public engagement are two crucial components. Establishment of a state-of-the-art genetic laboratory was a major accomplishment. SLTR is a classic showcase of successful North-South partnership in building a progressive research infrastructure in a LMIC. PMID:23302519

  16. TWINS Observations of Oxygen ENA Flux

    NASA Astrophysics Data System (ADS)

    Alquiza, J. C.; Goldstein, J.; Gruntman, M.; McComas, D. J.; Redfern, J.; Valek, P. W.

    2009-12-01

    As part of the science objectives of the TWINS (Two Wide-angle Imaging Neutral-atom Spectrometers) mission, we aim to enhance the knowledge of the workings of our magnetosphere by contributing compositional information of the observed energetic neutral atom (ENA) flux from the two TWINS instruments. We will present images of oxygen (O) ENA flux varying over time and space. Results from a few cases of TWINS flight data of geomagnetic significance will be presented with this analysis. One such example is a simultaneous and continuous observation of a minor geomagnetic storm (-60 nT) on 11 Oct 2008 as seen by both TWINS instruments. Initial TWINS images of this event show evidences of low-altitude emissions (LAEs) near the limb of the Earth and ring current signatures as well. Our compositional analysis is based on the secondary electron pulse height (PH) distributions measured by TWINS. Secondary electrons are generated as ENAs pass through an ultra-thin carbon foil in the TWINS instrument apertures. The secondary electron (PH) distribution varys as a function of the ENA’s energy and mass. The observed PH functions are then compared to the secondary electron PH distributions determined during instrument calibration. The flight data are simply treated as a linear combination of the two anticipated and most abundant species of magnetospheric ENAs, i.e., hydrogen (H) and oxygen (O).

  17. Expect Respect: Healthy Relationships

    MedlinePLUS

    ... Adult: 18-21 yrs. Healthy Living Nutrition Fitness Sports Oral Health Emotional Wellness Growing Healthy Safety & Prevention ... System Obesity Skin Treatments View all Injuries & Emergencies Sports Injuries Vaccine Preventable Diseases Diphtheria Haemophilus influenzae type ...

  18. Chloroplast Phylogenomics Indicates that Ginkgo biloba Is Sister to Cycads

    PubMed Central

    Wu, Chung-Shien; Chaw, Shu-Miaw; Huang, Ya-Yi

    2013-01-01

    Molecular phylogenetic studies have not yet reached a consensus on the placement of Ginkgoales, which is represented by the only living species, Ginkgo biloba (common name: ginkgo). At least six discrepant placements of ginkgo have been proposed. This study aimed to use the chloroplast phylogenomic approach to examine possible factors that lead to such disagreeing placements. We found the sequence types used in the analyses as the most critical factor in the conflicting placements of ginkgo. In addition, the placement of ginkgo varied in the trees inferred from nucleotide (NU) sequences, which notably depended on breadth of taxon sampling, tree-building methods, codon positions, positions of Gnetopsida (common name: gnetophytes), and including or excluding gnetophytes in data sets. In contrast, the trees inferred from amino acid (AA) sequences congruently supported the monophyly of a ginkgo and Cycadales (common name: cycads) clade, regardless of which factors were examined. Our site-stripping analysis further revealed that the high substitution saturation of NU sequences mainly derived from the third codon positions and contributed to the variable placements of ginkgo. In summary, the factors we surveyed did not affect results inferred from analyses of AA sequences. Congruent topologies in our AA trees give more confidence in supporting the ginkgo–cycad sister-group hypothesis. PMID:23315384

  19. Chloroplast phylogenomics indicates that Ginkgo biloba is sister to cycads.

    PubMed

    Wu, Chung-Shien; Chaw, Shu-Miaw; Huang, Ya-Yi

    2013-01-01

    Molecular phylogenetic studies have not yet reached a consensus on the placement of Ginkgoales, which is represented by the only living species, Ginkgo biloba (common name: ginkgo). At least six discrepant placements of ginkgo have been proposed. This study aimed to use the chloroplast phylogenomic approach to examine possible factors that lead to such disagreeing placements. We found the sequence types used in the analyses as the most critical factor in the conflicting placements of ginkgo. In addition, the placement of ginkgo varied in the trees inferred from nucleotide (NU) sequences, which notably depended on breadth of taxon sampling, tree-building methods, codon positions, positions of Gnetopsida (common name: gnetophytes), and including or excluding gnetophytes in data sets. In contrast, the trees inferred from amino acid (AA) sequences congruently supported the monophyly of a ginkgo and Cycadales (common name: cycads) clade, regardless of which factors were examined. Our site-stripping analysis further revealed that the high substitution saturation of NU sequences mainly derived from the third codon positions and contributed to the variable placements of ginkgo. In summary, the factors we surveyed did not affect results inferred from analyses of AA sequences. Congruent topologies in our AA trees give more confidence in supporting the ginkgo-cycad sister-group hypothesis. PMID:23315384

  20. Two sisters in the same dress: Heliconius cryptic species

    PubMed Central

    2008-01-01

    Background Sister species divergence and reproductive isolation commonly results from ecological adaptation. In mimetic Heliconius butterflies, shifts in colour pattern contribute to pre- and post-mating reproductive isolation and are commonly correlated with speciation. Closely related mimetic species are therefore not expected, as they should lack several important sources of reproductive isolation. Results Here we present phenotypic, behavioral and genetic evidence for the coexistence of two sympatric 'cryptic' species near Florencia in the eastern Andes of Colombia that share the same orange rayed colour pattern. These represent H. melpomene malleti and a novel taxon in the H. cydno group, here designated as novel race of Heliconius timareta, Heliconius timareta florencia. No-choice mating experiments show that these sympatric forms have strong assortative mating (?96%) despite great similarity in colour pattern, implying enhanced divergence in pheromonal signals. Conclusion We hypothesize that these species might have resulted from recent convergence in colour pattern, perhaps facilitated by hybrid introgression of wing pattern genes. PMID:19040737

  1. Brain Neuroplasticity in Healthy, Hyperactive and Psychotic Children: Insights from Neuroimaging

    Microsoft Academic Search

    Judith L Rapoport; Nitin Gogtay

    2008-01-01

    Noninvasive brain imaging permits longitudinal studies of anatomic brain development in healthy and psychiatrically ill children. The time course for gray matter maturation varies by region and parallels earlier histological studies, indicating dynamic patterns of overproduction and regression. Developmental trajectories vary in relation to gender, intelligence, and overall functioning. Twin studies show high heritability for brain volumes, which varies with

  2. Birth weight for gestational age among Flemish twin population

    PubMed Central

    Doom, E.C.G.; Delbaere, I.; Martens, G.; Temmerman, M.

    2012-01-01

    Objective: The aim of this study was to develop birth weight references for twins. Mean birth weights of individual twins are lower than those of singletons, hence singleton birth weight curves may not be suitable to assess twin birth weights. Study design: Twin birth weight curves were developed according to gestational age, gender, parity and mode of conception. The curves are based on population-based data of 40,494 twins born in Flanders, Belgium between 1987 and 2007. Results: A different growth potential was found comparing the birth weights of twins and singletons. Twins deviate from the singleton curve from 30 weeks gestational age on. Conclusion: Our study underlines that singleton birth weight curves differ from twin birth weight curves. We developed specific twin birth weight curves can be used in clinical practice in order to follow growth patterns of twins in utero. PMID:24753888

  3. Electron microscopy observations of twin-twin intersections in a particle hardened copper-titanium alloy

    SciTech Connect

    Radetic, T.; Soffa, W.A. [Univ. of Pittsburgh, PA (United States). Dept. of Materials Science and Engineering] [Univ. of Pittsburgh, PA (United States). Dept. of Materials Science and Engineering; Radmilovic, V. [Univ. of Belgrade (Yugoslavia). Dept. of Physical Metallurgy] [Univ. of Belgrade (Yugoslavia). Dept. of Physical Metallurgy

    1999-03-05

    The authors have recently reported electron microscopy (CTEM and HREM) observations of mechanical twinning in age hardened copper-titanium alloys containing a fine dispersion of the metastable Cu{sub 4}Ti ({beta}{prime}; D1{sub a}) phase ({approx}15 vol%). These particle hardened alloys are known to twin profusely and it has been suggested that single crystals of Cu-Ti-Al alloys containing coherent Cu{sub 4}Ti (D1{sub a}) particles yield by twinning at the onset of plastic flow. In this short paper conventional (CTEM) and high-resolution (HREM) electron microscopy observations of twin/twin intersections in the precipitation hardened two-phase copper-titanium alloys are reported. These results will suggest that the mechanisms governing shear accommodation in obstacle twins remain to be elucidated.

  4. Breastfeeding twins: a qualitative study.

    PubMed

    Cinar, Nursan Dede; Alvur, Tuncay Muge; Kose, Dilek; Nemut, Tijen

    2013-12-01

    The purpose of this qualitative research was to explore the needs and difficulties of mothers who had multiple babies at Sakarya County by focusing on their breastfeeding experience. Ten mothers who gave birth to multiple infants participated in the study voluntarily. The framework method of data analysis was applied systematically both within and across cases, with categories and themes identified by reading transcripts of interviews. Major themes generated from focus narrative interviews are described. These themes are: willingness of mothers to breastfeed and continue, management of breastfeeding, use of pacifier, daily life, instructions of healthcare personnel, and advices from practice of experienced mothers. This study showed that women were aware of the importance of mother's milk for their babies. They all, somehow, made intensive efforts to breastfeed their twins. Women who expect and/or have multiple babies need much more support and guidance, which may include advice for nutritional and daily care. PMID:24592592

  5. Twin arginine translocation in Yersinia.

    PubMed

    Lavander, Moa; Ericsson, Solveig K; Bröms, Jeanette E; Forsberg, Ake

    2007-01-01

    Bacteria utilise Twin arginine translocation (Tat) to deliver folded proteins across the cytoplasmic membrane. Disruption of Tat typically results in pleiotropic effects on e.g. growth, stress resistance, bacterial membrane biogenesis, motility and cell morphology. Further, Tat is coupled to virulence in a range of pathogenic bacteria, including species of Pseudomonas, Legionella, Agrobacterium and Mycobacterium. We have investigated this, for Yersinia, previously unexplored system, and have shown that the Tat pathway is functional and absolutely required for virulence of Yersinia pseudotuberculosis. A range of putative Yersinia Tat substrates have been predicted in silico, which together with the Tat system itself may be interesting targets for future development of antimicrobial treatments. Here we present a brief review of bacterial Tat and discuss our results concerning this system in Yersinia. PMID:17966422

  6. Repulsive force of twin boundary on curved dislocations and its role on the yielding of twinned nanowires

    E-print Network

    Sansoz, Frederic

    Repulsive force of twin boundary on curved dislocations and its role on the yielding of twinned; accepted 2 March 2010 Available online 4 March 2010 The effects of twin size and sample diameter on yield stress and surface dislocation emission in twinned metal nanowires deformed uniformly were studied using

  7. Two courses, one project:Two courses, one project: An exercise in twinningAn exercise in twinning

    E-print Network

    Salustri, Filippo A.

    Two courses, one project:Two courses, one project: An exercise in twinningAn exercise in twinning in "expert consultants" from OHS #12;Twinning: Project groupsTwinning: Project groups One OHS 718 student lectures on group dynamics and individual differences indynamics and individual differences in personality

  8. Bellagio report on healthy agriculture, healthy nutrition, healthy people.

    PubMed

    Simopoulos, Artemis P; Bourne, Peter G; Faergeman, Ole

    2013-02-01

    The Bellagio Report on Healthy Agriculture, Healthy Nutrition, Healthy People is the result of the meeting held at the Rockefeller Foundation Bellagio Center in Lake Como, Italy, 29 October-2 November 2012. The meeting was science-based but policy-oriented. The role and amount of healthy and unhealthy fats, with attention to the relative content of omega-3 and omega-6 fatty acids, sugar, and particularly fructose in foods that may underlie the epidemics of non-communicable diseases (NCD's) worldwide were extensively discussed. The report concludes that sugar consumption, especially in the form of high energy fructose in soft drinks, poses a major and insidious health threat, especially in children, and most diets, although with regional differences, are deficient in omega-3 fatty acids and too high in omega-6 fatty acids. Gene-nutrient interactions in growth and development and in disease prevention are fundamental to health, therefore regional Centers on Genetics, Nutrition and Fitness for Health should be established worldwide. Heads of state and government must elevate, as a matter of urgency, Nutrition as a national priority, that access to a healthy diet should be considered a human right and that the lead responsibility for Nutrition should be placed in Ministries of Health rather than agriculture so that the health requirements drive agricultural priorities, not vice versa. Nutritional security should be given the same priority as food security. PMID:23385371

  9. [Bellagio Report on Healthy Agriculture, Healthy Nutrition, Healthy People].

    PubMed

    Simopoulos, Artemis P; Bourne, Peter G; Faergeman, Ole

    2013-01-01

    The Bellagio Report on Healthy Agriculture, Healthy Nutrition, Healthy People is the result of the meeting held at the Rockefeller Foundation Bellagio Center in Lake Como, Italy, 29 October-2 November 2012. The meeting was science-based but policy-oriented. The role and amount of healthy and unhealthy fats, with attention to the relative content of omega-3 and omega-6 fatty acids, sugar, and particularly fructose in foods that may underlie the epidemics of non-communicable diseases (NCD's) worldwide were extensively discussed. The report concludes that sugar consumption, especially in the form of high energy fructose in soft drinks, poses a major and insidious health threat, especially in children, and most diets, although with regional differences, are deficient in omega-3 fatty acids and too high in omega-6 fatty acids. Gene-nutrient interactions in growth and development and in disease prevention are fundamental to health, therefore regional Centers on Genetics, Nutrition and Fitness for Health should be established worldwide. Heads of state and government must elevate, as a matter of urgency, Nutrition as a national priority, that access to a healthy diet should be considered a human right and that the lead responsibility for Nutrition should be placed in Ministries of Health rather than agriculture so that the health requirements drive agricultural priorities, not vice versa. Nutritional security should be given the same priority as food security. PMID:24506349

  10. Bellagio Report on Healthy Agriculture, Healthy Nutrition, Healthy People.

    PubMed

    Simopoulos, Artemis P; Bourne, Peter G; Faergeman, Ole

    2013-03-01

    The Bellagio Report on Healthy Agriculture, Healthy Nutrition, Healthy People is the result of the meeting held at the Rockefeller Foundation Bellagio Center in Lake Como, Italy 30 October-1 November, 2012. The meeting was science-based but policy-oriented. The role and amount of healthy and unhealthy fats, with attention to the relative content of omega-3 and omega-6 fatty acids, sugar, and particularly fructose in foods that may underlie the epidemics of non-communicable diseases (NCDs) worldwide were extensively discussed. The report concludes that sugar consumption, especially in the form of high energy fructose in soft drinks, poses a major and insidious health threat, especially in children, and most diets, although with regional differences, are deficient in omega-3 fatty acids and too high in omega-6 fatty acids. Gene-nutrient interactions in growth and development and in disease prevention are fundamental to health, therefore regional Centers on Genetics, Nutrition and Fitness for Health should be established worldwide. Heads of state and government must elevate, as a matter of urgency, nutrition as a national priority, that access to a healthy diet should be considered a human right and that the lead responsibility for nutrition should be placed in Ministries of Health rather than agriculture so that the health requirements drive agricultural priorities, not vice versa. Nutritional security should be given the same priority as food security. PMID:23698143

  11. Bellagio Report on Healthy Agriculture, Healthy Nutrition, Healthy People

    PubMed Central

    Simopoulos, Artemis P.; Bourne, Peter G.; Faergeman, Ole

    2013-01-01

    The Bellagio Report on Healthy Agriculture, Healthy Nutrition, Healthy People is the result of the meeting held at the Rockefeller Foundation Bellagio Center in Lake Como, Italy, 29 October–2 November 2012. The meeting was science-based but policy-oriented. The role and amount of healthy and unhealthy fats, with attention to the relative content of omega-3 and omega-6 fatty acids, sugar, and particularly fructose in foods that may underlie the epidemics of non-communicable diseases (NCD’s) worldwide were extensively discussed. The report concludes that sugar consumption, especially in the form of high energy fructose in soft drinks, poses a major and insidious health threat, especially in children, and most diets, although with regional differences, are deficient in omega-3 fatty acids and too high in omega-6 fatty acids. Gene-nutrient interactions in growth and development and in disease prevention are fundamental to health, therefore regional Centers on Genetics, Nutrition and Fitness for Health should be established worldwide. Heads of state and government must elevate, as a matter of urgency, Nutrition as a national priority, that access to a healthy diet should be considered a human right and that the lead responsibility for Nutrition should be placed in Ministries of Health rather than agriculture so that the health requirements drive agricultural priorities, not vice versa. Nutritional security should be given the same priority as food security. PMID:23385371

  12. The familial clustering of age at menarche in extended twin families.

    PubMed

    van den Berg, Stéphanie M; Boomsma, Dorret I

    2007-09-01

    The timing of puberty is complex, possibly involving many genetic factors that may interact with environmental influences. Familial resemblance for age at menarche was studied in a sample of 4,995 female twins, 1,296 sisters, 2,946 mothers and 635 female spouses of male twins. They had indicated their age at menarche as part of a larger longitudinal survey. We assessed assortative mating for age at menarche, gene-environment interaction effects and estimated the heritability of individual differences in pubertal timing. There was significant evidence of gene-environment interaction, accounting for 1.5% of the variance. There was no indication of consistent mate assortment on age at menarche. Individual differences in age at menarche are highly heritable, with additive genetic factors explaining at least 70% of the true variation. An additional 1.5% of the variation can be explained by a genotype-environment interaction effect where environmental factors are more important in individuals genetically predisposed for late menarche. PMID:17541737

  13. Fragile X syndrome and the (CGG)[sub n] mutation: Two families with discordant MZ twins

    SciTech Connect

    Kruyer, H.; Estivill, X.; Mila, M.; Ballesta, F.; Glover, G.; Carbonell, P. (Biochemistry and Clinical Genetics Center, Murcia (Spain))

    1994-03-01

    The fragile X phenotype has been found, in the majority of cases, to be due to the expansion of a CGG repeat in the 5'UTR region of the FMR-1 gene, accompanied by methylation of the adjacent CpG island and inactivation of the FMR-1 gene. Although several important aspects of genetics of fragile X have been resolved, it remains to be elucidated at which stage in development the transition from the premutation to the full mutation occurs. The authors present two families in which discordance between two sets of MZ twins illustrates two important genetic points. In one family, two affected MZ brothers differed in the number of CGG repeats, demonstrating in vivo mitotic instability of this CGG repeat and suggesting that the transition to the full mutation occurred postzygotically. In the second family, two MZ sisters had the same number of repeats, but only one was mentally retarded. When the methylation status of the FMR-1 CpG island was studied, the authors found that the majority of normal chromosomes had been inactivated in the affected twin, thus leading to the expression of the fragile X phenotype. 29 refs., 3 figs., 1 tab.

  14. Healthy Weights for Healthy Older Adults

    MedlinePLUS

    ... strong muscles and bones. Enjoy the Power of Protein People of all ages need protein for strong, healthy bodies. Some older adults do not get the protein they need to maintain muscle mass, fight infection ...

  15. C-terminus of Sororin interacts with SA2 and regulates sister chromatid cohesion.

    PubMed

    Zhang, Nenggang; Pati, Debananda

    2015-03-19

    Sororin is a conserved protein required for accurate separation of sister chromatids in each cell cycle. Sororin is recruited to chromatin during DNA replication, protects sister chromatid cohesion in S and G2 phase, and regulates the resolution of sister chromatid cohesion in mitosis. Sororin binds to cohesin complex, but how Sororin and cohesin subunits interact remains unclear. Here we report that the C-terminus of Sororin, especially the last 12 amino acid (aa) residues, is important for Sororin to bind cohesin core subunit SA2. Deletion of the last 12aa residues not only inhibits the interactions between Sororin and SA2 but also causes precocious chromosome separation. Our data suggest that the C-terminus of Sororin functions as an anchor binding to SA2, which facilitates other conserved motifs on Sororin to interact with other proteins to regulate sister chromatid cohesion and separation. PMID:25608232

  16. Catholic nursing sisters and brothers and racial justice in mid-20th-century America.

    PubMed

    Wall, Barbra Mann

    2009-01-01

    This historical article considers nursing's work for social justice in the 1960s civil rights movement through the lens of religious sisters and brothers who advocated for racial equality. The article examines Catholic nurses' work with African Americans in the mid-20th century that took place amid the prevailing social conditions of poverty and racial disempowerment, conditions that were linked to serious health consequences. Historical methodology is used within the framework of "bearing witness," a term often used in relation to the civil rights movement and one the sisters themselves employed. Two situations involving nurses in the mid-20th century are examined: the civil rights movement in Selma, Alabama, and the actions for racial justice in Chicago, Illinois. The thoughts and actions of Catholic sister and brother nurses in the mid-20th century are chronicled, including those few sister nurses who stepped outside their ordinary roles in an attempt to change an unjust system entirely. PMID:19461224

  17. When Your Brother or Sister Has Cancer: A Guide for Teens

    Cancer.gov

    Tips on what to say to your friends, how to deal with stress, and where to find support – as well as information about cancer and cancer treatments, for young people who have a brother or sister with cancer.

  18. A novel mechanism for the establishment of sister chromatid cohesion by the ECO1 acetyltransferase

    E-print Network

    Guo, Xuanzong

    Cohesin complex mediates cohesion between sister chromatids, which promotes high-fidelity chromosome segregation. Eco1p acetylates the cohesin subunit Smc3p during S phase to establish cohesion. The current model posits ...

  19. Healthy Foods for a Healthy Body

    NSDL National Science Digital Library

    Miss Mansfield

    2011-08-05

    During this activity we will be learning about healthy foods and why they are important to our bodies and minds. First thing is first, let's learn about what foods are healthy and then move on to why we need them. Follow the link bellow and play the blast off game, enter in the foods closest to what you actually eat and the activities that you like and do. Blast Off Game After you ...

  20. Education and Cognitive Ability as Direct, Mediating, or Spurious Influences on Female Age at First Birth: Behavior Genetic Models Fit to Danish Twin Data1

    PubMed Central

    Rodgers, Joseph Lee; Kohler, Hans-Peter; McGue, Matt; Behrman, Jere R.; Petersen, Inge; Bingley, Paul; Christensen, Kaare

    2009-01-01

    The authors study education and cognitive ability as predictors of female age at first birth (AFB), using monozygotic and dizygotic female twin pairs from the Middle-Aged Danish Twin survey. Using mediated regression, they replicate findings linking education (and not cognitive ability) to AFB. But in a behavior genetic model, both relationships are absorbed within a latent variable measuring the shared family environment. Two interpretations are relevant. First, variance in AFB emerges from differences between families, not differences between sisters within the same family. Second, even in a natural laboratory sensitive to genetic variance in female fertility—during demographic transition—the variance in AFB was non-genetic, located instead within the shared environment. PMID:19569405