240 research outputs found
Pacifism in Churches of Christ in Western Canada During World War 2 and the Influence of Nashville Bible School
Jacobs, Shelley L. (2006) Pacifism in Churches of Christ in Western Canada During World War 2 and the Influence of Nashville Bible School, Restoration Quarterly: Vol. 48 : No. 4.
This repository hosts selected Restoration Quarterly articles in downloadable PDF format. For the benefit of users who would like to browse the contents of RQ, we have included all issue covers even when full-text articles from that issue are unavailable. All Restoration Quarterly articles are available in full text in the ATLA Religion Database, available through most university and theological libraries or through your local libraryâs inter-library loan service
Fragile X astrocytes induce developmental delays in dendrite maturation and synaptic protein expression
<p>Abstract</p> <p>Background</p> <p>Fragile X syndrome is the most common inherited form of mental impairment characterized by cognitive impairment, attention deficit and autistic behaviours. The mouse model of Fragile X is used to study the underlying neurobiology associated with behavioral deficiencies. The effect of Fragile X glial cells on the development of neurons has not been studied. We used a co-culture technique in combination with morphometrics on immunostained neurons to investigate the role of astrocytes in the development delays associated with hippocampal neuron development.</p> <p>Results</p> <p>We found that hippocampal neurons grown on Fragile X astrocytes exhibited a significant difference from the neurons grown with normal astrocytes after 7 days in vitro for many parameters including increases in dendritic branching and in area of the cell body. However, after 21 days in culture, the neurons grown on Fragile X astrocytes exhibited morphological characteristics that did not differ significantly from the neurons grown on normal astrocytes. With antibodies to the pre-synaptic protein, synapsin, and to the excitatory post-synaptic protein, PSD-95, we quantified the number of developing excitatory synapses on the dendrites. In addition to the delays in dendritic patterning, the development of excitatory synapses was also delayed in the hippocampal neurons.</p> <p>Conclusions</p> <p>These experiments are the first to establish a role for astrocytes in the delayed growth characteristics and abnormal morphological features in dendrites and synapses that characterize the Fragile X syndrome.</p
Grid Reliability Through Clean Energy
In the wake of recent high-profile power failures, policymakers and politicians have asserted that there is an inherent tension between the aims of clean energy and grid reliability. But continuing to rely on fossil fuels to avoid system outages will only exacerbate reliability challenges by contributing to increasingly extreme climate-related weather events. These extremes will disrupt the power supply, with impacts rippling far beyond the electricity sector.This Article shows that much of the perceived tension between clean energy and reliability is a failure of law and governance resulting from the United Statesâ siloed approach to regulating the electric grid. Energy regulation is, we argue, siloed across three dimensions: (1) across substantive responsibilities (clean energy versus reliability); (2) across jurisdictions (federal, regional, state, and sometimes local); and (3) across a publicâprivate continuum of actors. This segmentation renders the full convergence of clean-energy and reliability goals extremely difficult. Reliability-focused organizations operating within their silos routinely counteract climate policies when making decisions about how to keep the lights on. Similarly, legal silos often cause states and regional organizations to neglect valuable opportunities for collaboration. Despite the challenges posed by this disaggregated system, conceptualizing the sphere of energy reliability as siloed across these dimensions unlocks new possibilities for reform.We do not propose upending energy law silos or making energy institutions wholly public. Rather, we argue for calibrated reforms to U.S. energy law and governance that shift authority within and among the silos to integrate the twin aims of reliability and low-carbon energy. Across the key policy areas of electricity markets, transmission planning and siting, reliability regulation, and regional grid governance, we assess changes that would integrate climate and reliability imperatives; balance state, regional, and federal jurisdiction; and reconcile public and private values. We believe this approach to energy law reform offers a holistic and realistic formula for a cleaner, more reliable grid
Hydrocracking of Octacosane and Cobalt FischerâTropsch Wax over Nonsulfided NiMo and Pt-Based Catalysts
The effect of activation environment (N2, H2 and H2S/H2) on the hydrocracking performance of a NiMo/Al catalyst was studied at 380 °C and 3.5 MPa using octacosane (C28). The catalyst physical structure and acidity were characterized by BET, XRD, SEM-EDX and FTIR techniques. The N2 activation generated more active nonsulfided NiMo/Al catalyst relative to the H2 or H2S activation (XC28, 70â80% versus 6â10%). For a comparison, a NiMo/Si-Al catalyst was also tested after normal H2 activation and showed higher activity at the same process conditions (XC28, 81â99%). The high activity of the NiMo/Al (N2 activation) and NiMo/Si-Al catalysts was mainly ascribed to a higher number of BrĂžnsted acid sites (BAS) on the catalysts. The hydrocracking of cobalt wax using Pt/Si-Al and Pt/Al catalysts confirmed the superior activity of the Si-Al support. A double-peak product distribution occurred at C4âC6 and C10âC16 on all catalysts, which illustrates secondary hydrocracking and faster hydrocracking at the middle of the chain. The nonsulfided NiMo/Al and Pt/Al catalysts, and NiMo/Si-Al catalyst produced predominantly diesel (sel. 50â70%) and gasoline range (sel. \u3e 50%) hydrocarbons, respectively, accompanied by some CH4 and light hydrocarbons C2âC4. On the other hand, the hydrocarbon distribution of the Pt/Si-Al varied with conditions (i.e., diesel sel. 87â90% below 290 °C or gasoline sel. 60â70% above 290 °C accompanied by little CH4) The dependence of the isomer/paraffin ratio on chain length was studied as well. The peak iso/paraffin value was observed at C10âC13 for the SiAl catalyst
Criticality in confined ionic fluids
A theory of a confined two dimensional electrolyte is presented. The positive
and negative ions, interacting by a potential, are constrained to move on
an interface separating two solvents with dielectric constants and
. It is shown that the Debye-H\"uckel type of theory predicts that
the this 2d Coulomb fluid should undergo a phase separation into a coexisting
liquid (high density) and gas (low density) phases. We argue, however, that the
formation of polymer-like chains of alternating positive and negative ions can
prevent this phase transition from taking place.Comment: RevTex, no figures, in press Phys. Rev.
Sex recognition by odour and variation in the uropygial gland secretion in starlings
1.âAlthough a growing body of evidence supports that olfaction based on chemical compounds emitted by birds may play a role in individual recognition, the possible role of chemical cues in sexual selection of birds has been only preliminarily studied.2.âWe investigated for the first time whether a passerine bird, the spotless starling Sturnus unicolor, was able to discriminate the sex of conspecifics by using olfactory cues and whether the size and secretion composition of the uropygial gland convey information on sex, age and reproductive status in this species.3.âWe performed a blind choice experiment during mating, and we found that starlings were able to discriminate the sex of conspecifics by using chemical cues alone. Both male and female starlings preferred male scents. Furthermore, the analysis of the chemical composition of the uropygial gland secretion by using gas chromatographyâmass spectrometry (GCâMS) revealed differences between sexes, ages and reproductive status.4.âIn conclusion, our study reveals for first time that a passerine species can discriminate the sex of conspecifics by relying on chemical cues and suggests that the uropygial gland secretion may potentially function as a chemical signal used in mate choice and/or intrasexual competition in this species.This research was funded by the Spanish Ministry of Education and Science â FEDER (CGL2008-00718) and PIE 200930I029 to J. M. AvilĂ©s and D. Parejo.The study was conducted under licence of the Junta de AndalucĂa GCâMS analyses were performed by Dr. Rafael NĂșñez at the ScientiïŹc Instrumentation Service (EEZ, CSIC) (Granada, Spain).Peer reviewe
Loss of gastrokine-2 drives premalignant gastric inflammation and tumor progression
Chronic mucosal inflammation is associated with a greater risk of gastric cancer (GC) and, therefore, requires tight control by suppressive counter mechanisms. Gastrokine-2 (GKN2) belongs to a family of secreted proteins expressed within normal gastric mucosal cells. GKN2 expression is frequently lost during GC progression, suggesting an inhibitory role; however, a causal link remains unsubstantiated. Here, we developed Gkn2 knockout and transgenic overexpressing mice to investigate the functional impact of GKN2 loss in GC pathogenesis. In mouse models of GC, decreased GKN2 expression correlated with gastric pathology that paralleled human GC progression. At baseline, Gkn2 knockout mice exhibited defective gastric epithelial differentiation but not malignant progression. Conversely, Gkn2 knockout in the IL-11/STAT3-dependent gp130[superscript F/F] GC model caused tumorigenesis of the proximal stomach. Additionally, gastric immunopathology was accelerated in Helicobacter pyloriâinfected Gkn2 knockout mice and was associated with augmented T helper cell type 1 (Th1) but not Th17 immunity. Heightened Th1 responses in Gkn2 knockout mice were linked to deregulated mucosal innate immunity and impaired myeloid-derived suppressor cell activation. Finally, transgenic overexpression of human gastrokines (GKNs) attenuated gastric tumor growth in gp130[superscript F/F] mice. Together, these results reveal an antiinflammatory role for GKN2, provide in vivo evidence that links GKN2 loss to GC pathogenesis, and suggest GKN restoration as a strategy to restrain GC progression
California Men's Health Study (CMHS): a multiethnic cohort in a managed care setting
BACKGROUND: We established a male, multiethnic cohort primarily to study prostate cancer etiology and secondarily to study the etiologies of other cancer and non-cancer conditions. METHODS/DESIGN: Eligible participants were 45-to-69 year old males who were members of a large, prepaid health plan in California. Participants completed two surveys on-line or on paper in 2002 â 2003. Survey content included demographics; family, medical, and cancer screening history; sexuality and sexual development; lifestyle (diet, physical activity, and smoking); prescription and non-prescription drugs; and herbal supplements. We linked study data with clinical data, including laboratory, hospitalization, and cancer data, from electronic health plan files. We recruited 84,170 participants, approximately 40% from minority populations and over 5,000 who identified themselves as other than heterosexual. We observed a wide range of education (53% completed less than college) and income. PSA testing rates (75% overall) were highest among black participants. Body mass index (BMI) (median 27.2) was highest for blacks and Latinos and lowest for Asians, and showed 80.6% agreement with BMI from clinical data sources. The sensitivity and specificity can be assessed by comparing self-reported data, such as PSA testing, diabetes, and history of cancer, to health plan data. We anticipate that nearly 1,500 prostate cancer diagnoses will occur within five years of cohort inception. DISCUSSION: A wide variety of epidemiologic, health services, and outcomes research utilizing a rich array of electronic, biological, and clinical resources is possible within this multiethnic cohort. The California Men's Health Study and other cohorts nested within comprehensive health delivery systems can make important contributions in the area of men's health
On the pulmonary toxicity of oxygen. 4. The thyroid arena
Author Posting. © The Author(s), 2011. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Experimental and Molecular Pathology 92 (2012): 140-154, doi:10.1016/j.yexmp.2011.11.006.Normally developed thyroid function is critical to the transition from fetal to neonatal life with the
onset of independent thermoregulation, the most conspicuous of the many ways in which thyroid
secretions act throughout the body. A role for thyroid secretions in growth and maturation of the
lungs as part of the preparation for the onset of breathing has been recognized for some time but how
this contributes to tissue and cell processes and defenses under the duress of respiratory distress has
not been well examined. Extensive archival autopsy material was searched for thyroid and adrenal
weights, first by gestational age, and then for changes during the first hours after birth as ratios to
body weight. After a gestational age of 22 weeks the fetal thyroid and adrenal glands at autopsy in
those with hyaline membrane disease are persistently half the size of those in "normal" infants dying
with other disorders. When the thyroid is examined shortly after birth it reveals a post natal loss of
mass per body weight of similar orders of magnitude which does not occur in the control group. A
clinical sample of premature infants with (12) and without (14) hyaline membrane disease was
tested for T4, TSH, TBG, and total serum protein. The results also demonstrate a special subset with
lower birth weights at the same gestational age, and lower serum T4 and total serum protein. Ventilatory distress in newborn rabbits was induced by bilateral cervical vagotomy at 24 hours post
natal following earlier injection of thyroxine (T4) or thyroid stimulating hormone (TSH) and
comparisons were made with untreated animals and by dose. Early life thyroidectomy was
performed followed by exposure to either air or 100% oxygen. A final experiment in air was
vagotomy after thyroidectomy. Composite analysis of these methods indicates that thyroid factors
are both operative and important in the newborn animal with ventilatory distress. This work and
the archival data indicate those infants destined to develop hyaline membrane disease through
respiratory distress are a distinct developmental and clinical subset with the point of departure from
otherwise normal development and maturation in the second or early third trimester. This interval
is known to be a period of marked variation in the overview indicators of fetal progress through
gestational time. The initiating factor or circumstance which then separates this special subset from
normal future development is placed by these observations firmly into the period when human fetal
TSH dramatically rises 7-fold (17.5-25.5 weeks) followed by a lesser 3 to 4 fold increase in T4
which is extended into the early third trimester. The earlier part of this interval is characterized by
the thyrotrophic action of chorionic gonadotropin (hCG). The possibility that abnormalities in the
intrauterine environment secondary to maternal infection play a role within this time frame is
indicated by the demonstration that interleukin-2 (IL-2) induces an anterior pituitary release of
TSH. Since IL-2 has this property and is not an acute phase cytokine, some form of chronic
infection or an immunopathic process seems more likely as a possible active factor in pathogenesis.The work in this report was performed under a grant to the University of Chicago from the John A.
Hartford Foundation
Literature, Human Rights and the Cold War
Despite the ambitions of the Universal Declaration of Human Rights, adopted by the United Nations General Assembly on 10 December 1948, the establishment of global justice and freedom made little progress over the following four decades. One of the results was a significant strand of Cold War literature that documented the brutalising effects of industrialisation, totalitarianism and superpower interventionism and that advocated for those who, still marginalised by class, gender, sexuality, race and ethnicity, felt excluded from the UDHR's conception of a common humanity. Taking up many of these themes, this essay analyses human rights literature from around the world, including examples of autobiographical testimony, political fiction, postcolonial poetry, dystopian drama and postmodernist fiction
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