299 research outputs found
Jacob of Sarug's Homily on Tamar (Gen 38)
No full textThis small volume contains an edition (from Vatican ms. 117) of Jacob of Sarug’s homily on Tamar (420 lines long). The full title is “On Tamar and on the Mystery of the Church.” The biblical narrative on which the poem is based (Gen 38) gives Jacob the opportunity to discuss various women in the early part of biblical history and in Jesus’ lineage, as well as the fact that a woman who is called a prostitute is in that lineage. Jacob explains how Scripture’s language is used in this regard
Interview of Rick Greene by Tamar Chute
No full textRachel Carson: author of The Silent Spring (p. 2) --
Jeff Miller: victim of Kent State shootings (p. 13) --
E. Paul Taiganides: Professor, Dept. of Agricultural Engineering (pp. 2, 20)The media can be accessed here: http://streaming.osu.edu/knowledgebank/university_archives/Greene_Rick_102210.mp4Rick Greene came to OSU as a freshman in 1969. He witnessed firsthand the student demonstrations and riots of 1970, and the changes that they brought to OSU and across the country. He currently makes his home in Florida, but returns to Ohio State for football games
The impact of Self-Interacting Dark Matter and Warm Dark Matter in dwarf galaxies
No full textThe ΛCDM model is the most widely accepted model of cosmological structure formation
and evolution. It includes a form of Cold Dark Matter (CDM), which is non-quantum, nonrelativistic and collisionless. It settles into extended and dense self-gravitating haloes as a
result of cosmic structure formation. CDM haloes act as a stabilizing agent for galaxies, while
the late-time accelerating expansion of the Universe is sourced by a cosmological constant
Λ. Due to the disagreement between ΛCDM-based simulations and observations on galactic
and sub-galactic scales and the fact that traditional dark matter candidates remain undetected,
the theoretical space for alternatives has been widening, making the particle nature of dark
matter a fundamental question in Physics. This thesis revolves around this question in the
context of two proposed modifications to the CDM cosmology: Self-interacting dark matter
(SIDM) and Warm Dark Matter (WDM). In the former, strong self-interactions modify the
inner dynamics of dark matter haloes, while in the latter, non-negligible thermal velocities
in the early Universe suppress the abundance and inner densities of low-mass haloes. These
modifications have been proposed to solve outstanding inconsistencies between CDM and
observations of dwarf galaxies.
In the WDM project, we use a high-resolution hydrodynamical simulation that includes
the EAGLE galaxy formation model to understand how the properties and statistics of the
dwarf galaxy population are related to the ∼Mpc-scale environment in our Local Group.
We are interested in a cosmologically underdense region that has been relatively unexplored
to uncover divergent predictions of CDM and WDM. We find that the cumulative stellar
mass function is almost identical for high stellar mass systems (M∗ > 107 M⊙ ), while it is
suppressed below this mass, where WDM predicts fewer dwarf galaxies than CDM.
In the SIDM project, we use a semi-analytic framework calibrated to simulations to study
the final stage of the SIDM halo evolution - the "gravothermal collapse" phase. We show
that in certain region of the parameter space of SIDM models, dwarf-size SIDM haloes have
a bimodal distribution, with some having central density cores and others being centrally
cuspy, the latter being those that have collapsed and contain an intermediate-mass black
hole. This offers a promising solution to the so-called "diversity problem" in Milky-Way
satellites. Finally, we extend the analysis of the core-collapse phase in SIDM haloes, including
the impact on the baryonic component. In particular, we discuss how the use of adiabatic
invariants can be exploited to predict the response of stellar orbits to the collapsing SIDM
coreÍ heimsfræði er svonefnt ΛCDM-líkan hin viðtekna lýsing á myndun og þróun stærri
efniseininga í alheimi. Það samanstendur að megninu til af köldu hulduefni (CDM), sem er
óskammtað, hægfara og árekstralaust. Við myndun stærri kerfa, safnast hulduefnið undan
eigin þyngdarverkun, í víðfema en þétta hjúpa. Hulduefnishjúparnir hafa styrkjandi áhrif á
stöðugleika vetrarbrauta, en aukinn útþennsluhraði alheims á síðari stigum stafar af heimsfasta,
Λ. Hermanir ΛCDM-líkana hafa oft ekki samræmst niðurstöðum mælinga á vetrarbrautum og
grunneiningum þeirra, sér í lagi hafa hefðbundnar hulduagnir ekki fundist. Þar með hefur svigrúm aukist til að kanna aðra möguleika og á þann hátt hefur spurningin um gerð og eiginleika
huldusefnis orðið ein af meginráðgátum eðlisfræðinnar. Þessi ritgerð tekur þessa spurningu til
umfjöllunar og skoðar samhengið á milli tveggja tilgáta um breytta heimsmynd hulduefnis:
Annars vegar eiginvíxlverkandi hulduefni (e. Self-Interacting Dark Matter - SIDM) og svo
heitt hulduefni (Warm Dark Matter - WDM). Í fyrra tilvikinu breytir sterk eiginvíxlverkun
hreyfifræði hulduefnishjúpanna, en hið síðara veldur því að varmafræðilegur hraði í ungum
alheimi dregur úr fjölda og innri þéttleika hjúpa með lítinn massa. Þessi tilvik hafa verið
innleidd til að leysa ósamkvæmni á milli hulduefnis og mælinga á dvergvetrarbrautum. Í
WDM-hlutanum byggjum við á hermireikningum í hárri upplausn, sem innihalda EAGLE
líkanið af myndun vetrarbrauta til að varpa ljósi á hvernig tölfræðilegir eiginleikar safns
dvergvetrarbrauta tengjast nánasta (∼Mpc) umhverfi í Grenndarhópnum. Við beinum sjónum
að heimsfræðilegum svæðum með undirþéttleika sem lítt hafa verið könnuð með tilliti til
forspáa CDM og WDM. Í ljós kemur að dreifingarfall massa stjarna í vetrarbrautum er í
þessum tveimur tilfellum eins ef massinn er hár (M∗ > 107 M⊙ ), en fyrir lægri massa spáir
WDM færri dvergvetrarbrautum en CDM.
Í SIDM-hlutanum nýtum við aflfræðilega framsetningu sem er kvörðuð við hermireikninga til að kanna lokaskeið í þróun SIDM hjúpa, skeið þyngdarvermins hruns. Við sýnum að
á vissu svæði í stikarúmi SIDM-líkananna, hafa dvergvetrarbrautir tvítindadreifingu þar sem
sumar hafa þéttann kjarna á meðan aðrar eru yddar. Þeir hjúpar sem hafa þegar fallið saman
innihalda miðlungsstór svarthol. Þessar niðurstöður varða leið að lausn svonefnds margbreytileika í fylgiþokum vetrarbrautarinnar. Loks útvíkkum við greiningu á skeiði kjarna-hruns í
SIDM-líkönum, með því að taka einnig tillit til áhrifa þungeinda í hjúpnum. Sér í lagi hugum
við að því hvernig nýta má óvermióbreytur til að spá fyrir um svörun og breytingu á brautum
stjarna þegar SIDM-kjarninn fellur saman.The Icelandic Research Fund (grant number 206930)
Co-selection of Mercury and Multiple Antibiotic Resistances in Bacteria Exposed to Mercury in the Fundulus heteroclitus Gut Microbiome
No full textThe emergence and spread of antibiotic resistant pathogenic bacteria is currently one of the most serious challenges to human health. To combat this problem, it is critical to understand the processes and pathways that result in the creation of antibiotic resistance gene pools in the environment. In this study we examined the effects of mercury (Hg) exposure on the co-selection of Hg and antibiotic resistant bacteria that colonize the gastrointestinal tract of the mummichog (Fundulus heteroclitus), a small, estuarine fish. We examined this connection in two experimental systems: (i) a short-term laboratory exposure study where fish were fed Hg-laced food for 15 days and (ii) an examination of environmental populations from two sites with very different levels of Hg contamination. In the lab exposure study, fish muscle tissue accumulation of Hg was proportional to food Hg concentration (R2=0.99; p<0.0001). In the environmental study, fish from the contaminated site accumulated 3 fold more Hg compared to fish from the reference site (p<0.05). Further, abundance of the Hg resistance gene merA was more than 8 fold higher (p<0.0001) in DNA extracts of ingesta of fish from the contaminated site, suggesting adaptation to Hg. Finally, resistance to 3 or more antibiotics was more common in Hg resistant as compared to Hg sensitive bacterial colonies that were isolated from fish ingesta (p<0.001) demonstrating co-selection of Hg and antibiotic resistances. Together, our results highlight the possibility for the creation of antibiotic resistance gene pools as a result of exposure to Hg in contaminated environments.Peer reviewe
Young African American fathers: an exploratory qualitative research study
No full textThis exploratory study examined the experiences of young (age 18-27) African American fathers and their transition into fatherhood. A qualitative analysis of ten interviews was completed using a grounded theory approach (Corbin & Strauss, 2008). For the past 15 years, academics, such as psychologists, social workers, anthropologists and economists, have paid close attention to fathers and issues related to fatherhood (Nelson, 2004). Such increased attention has resulted in greater government funding, the creation and sustaining of programs to support fathers’ transition to parenthood, and given rise to a national conversation about responsible fatherhood and healthy families. The media commonly engages in portraying African American fathers as “absent,” “non-residential,” “non-custodial,” “unavailable,” “non-married,” “irresponsible,” and “immature.” While this stereotype is not true for all African American families, demographic data reveal that the majority of African American children in contemporary society do not live in the same households as their biological fathers, or reside with them only periodically (Connor, 2004). Although households devoid of biological or legal fathers present are a growing concern across all ethnic groups in America, the situation is particularly alarming in the African American community (Deave & Johnson, 2008). This study explored the experiences and needs of young African American fathers and their transition into fatherhood. Participants related their experiences as fathers, identified who they turn for help, and described the parenting skills, if any, they had learned prior to becoming a parent. In addition, participants identified the topic areas they felt should be included in future fatherhood programs and what they enjoy most about parenting. Results from this study indicated various themes related to African American fathers’ experiences, such as peer and family support, preparation for fatherhood, positive advice for future fathers, unplanned parenthood, fatherhood involvement, and the definition of fatherhood. Implications for future research with regard to fathers, parenting programs, and mental health providers were also discussed.Psy. D.Includes bibliographical referencesby Maurice Tamar Ingra
Retelling the Story of Judah and Tamar in the Testament of Judah
No full textMany Christians assume that Old Testament documents were „Christianised. during the New Testament era, although the process predates the New Testament. This assumption may be premised on the lack of much information about how early Christians re-interpreted Old Testament stories to meet new trends of thinking during the Inter-Testament period. This paper, therefore, focuses on the story of Judah and Tamar in Genesis 38, which is retold in the Testament of Judah to discover the intentions and the worldviews of the author of the Testament of Judah. For the presupposition of this paper, the Testament of Judah will be studied as a Christian document. The other side of the debate that the Testaments are the works of a Jewish author is thus put aside at least for a while in this paper. This is because the Testaments look more like a Christian document than Jewish. As a result, the texts for comparison would be the LXX and the Greek version of theTestaments. The paper utilizes literary analyses of the two passages while it progresses through three main headings; the overall structure of the Testament of Judah, exegesis of the story of Judah and Tamar in both Genesis 38 and The Testament of Judah, an analysis of key characters and a summary of the significant differences between the two stories. The paper concludes that the world view of the author of the Testament thought of women as channels through which the devil overcomes man in battles of the mind, thereby, leading men into impurity. Hence, Bathshua and Tamar are thus presented as the „victimizers. while Judah is portrayed in the Testament as an old man who had gained experience with time whose strengths and weakness serve as example for his sons. Keywords: Testament of Judah, Second Temple Judaism, Pseudepigrapha, Judah and Tamar, Retelling
Evaluation of chemical assays for determining hydroperoxides levels in oxidized lipids
No full textThis thesis re-evaluated current analyses for hydroperoxides, the first stable product of lipid oxidation. The objective was to compare linearity of response, accuracy, limits of detection, active concentration range, reproducibility, and required conditions and handling for six commonly-used hydroperoxide assays, using cumene (lipid-soluble) and tert-butyl (water-soluble) hydroperoxides as test standards; optimized procedures were then applied to oxidized methyl linoleate. Traditional iodometric titration method with thiosulfate is the most accurate assay chemically. It is stoichiometric, linear, and useful for high peroxide concentrations, but unclear endpoints limits sensitivity and many handling issues must be controlled to provide reproducible results. It is the only method providing absolute quantitation of hydroperoxides. PeroxySafeTM and PeroxoQuantTM commercial kits based on the xylenol orange assay detected nanomoles of hydroperoxides, but samples with more than trace levels of hydroperoxides (the usual case with foods) must be diluted extensively before analysis. Variation of reaction response varied with hydroperoxide structure is a major disadvantage for this assay, and the Fe3+-xylenol orange complex was readily bleached by excess hydroperoxide, thus reducing apparent hydroperoxide levels. Reaction stoichiometry cannot be determined due to proprietary reagents of unspecified concentration. The ferric thiocyanate method (chemical reaction or Cayman LPOTM kit) is extremely sensitive, detecting as low as 5 nanomoles, but the reaction stoichiometry varies with solvent and hydroperoxide structure and concentration. Fe3+-SCN complexes bleached at high hydroperoxide concentrations, causing underestimation of peroxide values. Extensive dilution of samples is thus required for analyses of lipid extracts from most foods. Due to these complications, xylenol orange and Fe3+-thiocyanate assays may be useful for monitoring changes of single materials over time or comparing extracts with comparable fatty acid composition, but they cannot determine absolute hydroperoxide concentrations. No optical assay tested matched peroxide values determined by iodometric assay. Finally, hydroperoxides oxidize triphenylphosphine selectively and stoichiometrically to triphenylphosphine oxide that can be detected and quantitated by HPLC, detecting as low as 5 picomoles of hydroperoxide. The reaction has promise, but needs further investigation before adoption. Results for all methods highlight the importance of excluding oxygen during the assays and understanding the correct concentration range for each assay.M.S.Includes bibliographical referencesby Elah Tamar Steltze
Magnetotelluric experiments carried out in the Tamar Valley area of northern and central Tasmania, conducted in 1994
No full textNAThis record was harvested by RDA at 2025-09-11T16:10:39.976757+10:00 from <a href='http://geonetwork.nci.org.au/geonetwork/srv/eng/catalog.search#/metadata/f7674_3368_2986_4846'>NCI's Data Catalogue</a> where it was last modified at 2019-07-15 11:19:27.This dataset consists of MT data collected in The Tamar Valley, Tas, in 1994
Lessons from Africa: Combating the Twin Epidemics of Domestic Violence and HIV/AIDS
No full textDomestic violence and HIV/AIDS have proven a lethal combination, exacting a heavy toll on women's lives, particularly in Africa. In this article, partially based on a presentation made at the human rights networking zone at the conference, Tamar Ezer examines the interrelation between domestic violence and HIV/AIDS, provides an analysis of obligations under human rights law, and describes innovative programs that attempt to address the intersection of these twin epidemics. The author argues for holistic approaches that address the social, economic and legal dimensions of the problem
Notes on the struggle to define involvement in television viewing
No full textSummary: This article offers a way of categorising viewers' involvement in Television by type of response, with particular reference to popular soap operas. It postulates four types of viewer engagement, each capable of further elaboration and of co-existing within the same person. The author also explores the ambivalence of viewer engagement and the relative effectiveness of its positive and negative aspects.Liebes Tamar. Notes on the struggle to define involvement in television viewing. In: Réseaux. The French journal of communication, volume 4, n°1, 1996. pp. 35-46
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