cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Morphological and chemical studies of developing cerebral cortex in the cat
Creators: name: Kharetchko, Xenia
Publisher: name: University of Utah
Year: 2012
Subjects: Growth & Development
Anatomy

description: 101 animals were used for the study of morphological and chemical changes in the suprasylvian gyrus of the cat.  The prenatal studies were carried out in the fetuses for 4.5 cm to 12.5 cm.  C-R length.  The postnatal changes were studies in the cats from 1 day of age kittens to the adult stage.  The quantitative morphological studies included studies of changes of the mean cellular volume of the nucleus/cytoplasm ratio, the density of the neuron and the gray/cell coefficient.  The quantitative methods employed were those of Chalkley ('43 and .49).  The qualitative morphological studies were carried out by means of microscopic examination of histological preparations.  The chemical studies were concerned with determination of the content of the nucleic acid and phosphoproteins.  The methods employed were those of Schmidet and Thannbauser ('45) and Allen ('40).  A hypothetical succession of events taking place during the postnatal period of development of the cerebral  cortex of the cat was outlined.  The data obtained during the studies indicated that the morphological and chemical changes are determined by the age and body weight of the animals. The overall quantitative morphological changes during development were a decrease of neuron density, and of the nuclear/cytoplasmic ratio an increase of the mean cellular volume, of the nucleus/cytoplasm ratio and of the gray/cell coefficient.  The qualitative morphological studies give evidence of the stage-by-stage occurring differentiation of the cortical layers and of the cells of the layers.  The data of the chemical studies seem to indicate that the content of the phosphoproteins per gm of wet tissue is maintained at more or less constant level during the entire period of development and throughout the adult life.  The content of  PNA decreased during the fetal life but did not change significantly from the 1st day after birth to the adult stages, while the content of the DNA decreased during the prenatal period and after birth, and become stabilized only on the 11th day after birth.  Further morphological and chemical studies developing and aging cerebral cortex of the cat are suggested.
Updated neutrino mass constraints from galaxy clustering and CMB lensing-galaxy cross-correlation measurements
Creators: name: Tanseri, Isabelle
name: Hagstotz, Steffen
name: Vagnozzi, Sunny
name: Giusarma, Elena
name: Freese, Katherine
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We revisit cosmological constraints on the sum of the neutrino masses $Σm_ν$ from a combination of full-shape BOSS galaxy clustering [$P(k)$] data and measurements of the cross-correlation between Planck Cosmic Microwave Background (CMB) lensing convergence and BOSS galaxy overdensity maps [$C^{κ\text{g}}_{\ell}$], using a simple but theoretically motivated model for the scale-dependent galaxy bias in auto- and cross-correlation measurements. We improve upon earlier related work in several respects, particularly through a more accurate treatment of the correlation and covariance between $P(k)$ and $C^{κ\text{g}}_{\ell}$ measurements. When combining these measurements with Planck CMB data, we find a 95% confidence level upper limit of $Σm_ν<0.14\,{\rm eV}$, while slightly weaker limits are obtained when including small-scale ACTPol CMB data, in agreement with our expectations. We confirm earlier findings that (once combined with CMB data) the full-shape information content is comparable to the geometrical information content in the reconstructed BAO peaks given the precision of current galaxy clustering data, discuss the physical significance of our inferred bias and shot noise parameters, and perform a number of robustness tests on our underlying model. While the inclusion of $C^{κ\text{g}}_{\ell}$ measurements does not currently appear to lead to substantial improvements in the resulting $Σm_ν$ constraints, we expect the converse to be true for near-future galaxy clustering measurements, whose shape information content will eventually supersede the geometrical one.
description: 52 pages, 7 sub-figures arranged in 6 figures, 2 tables. v2: additional references added, version accepted for publication in JHEAp
Hemoglobin adsorption onto glass and polymers
Creators: name: Chen, Jie
Publisher: name: University of Utah
Year: 2012
Subjects: Analysis
Denaturation

description: The absorption of three types of hemoglobin (Hb):  deoxyHb, OxyHb, and MetHb, were determined on glass and polymer surfaces:  (1) clean glass, (2) n-pentyl triethoxy silane (NPS)-treated glass, (3) polystyrene (PS), (4) polyetherurethane (PU), and (5) polydimethyl siloxane (PDMSO).  The absorbed amounts range from 0.1 to 0.6 µg/cm2 for OxyHb and from 0.3 to 038 µg/cm2 for DeoxyHb.  DeoxyHb absorbs more onto all of these surfaces than OxyHb.  Except for PDMSO, the more the hydrophobic the surface, the more absorption of both Deoxy and OxyHb forms.  All three type of Hb did not absorb on PDMSO surfaces as determined by X-ray photoelectron spectroscopy (XPS).  Radiolabelling studies confirmed this using commercial PDMSO film.  However, spin cast or dip coated PDMSO surfaces did show absorption, i.e., 035 ± 0.1 µg/cm2, which may indicate that the Hb probably distributed around the edge of the spin cast or dip coated PDMSO surface.  The quantitation and pattern of Hb coverage on the clean glass were measured by XPS.  The N/Si ratio was obtained using the variable angle technique followed by ratio counting using the same glass coverslip.  The results suggest a possible 50% patchy coverage with 40?A average thickness, assuming a 40?A mean free path.  These results suggest that OxyHb and DeoxyHb interact differently with surfaces.  The DeoxyHb surface is more hydrophobic than OxyHb surface.  Yet, the net charge on the surface of DeoxyHb and OxyHb in probably similar at pH 7.4.  It is likely that the surface hydrophobicity of Hb plays the major role for Hb absorption onto surfaces.  The binding sites for Hb absorption were proposed as the clefts between a1, B2 and between A2, B1.
PREVALENCE AND FACTORS ASSOCIATED WITH POSTOPERATIVE NAUSEA AND VOMITING AT THE UNIVERSITY OF GONDAR TEACHING HOSPITAL, NORTHWEST ETHIOPIA, 2012: A CROSS-SECTIONAL STUDY
Creators: name: G/Egziabher, Endale
name: Hoyle, Jessica
name: Reddi, Danielle
name: Belayneh, Tadesse
Publisher: name: Ethiopian Journal of Health and Biomedical Sciences
Year: 2014

description: Background: Postoperative nausea and vomiting is a common complication of anaesthesia and surgery. Despite modern anaesthetic and surgical techniques, the incidence of postoperative nausea and vomiting remains high. This common complication is unpleasant for patients and delays recovery. Despite the large case load at the University of Gondar Hospital, the magnitude of this problem is not kwon. Objective: The objective of this study was to determine the prevalence of postoperative nausea, and vomiting, and associated factors. Methods: A cross-sectional study was conducted from February 27 to April12, 2012 at the University of Gondar Teaching Hospital. A total of 509 patients who were operated on in this period were included in the study. We used a validated Amharic questionnaire to interview patients 24 hours postoperatively. Results: The prevalence of postoperative nausea and vomiting was 36.2% within 24 hours after operation. Factors that were associated with postoperative nausea were history of motion sickness (AOR=1.77, CI=1.14-2.75), previous history of postoperative nausea and vomiting (AOR=4.26, CI=1.70-10.69) and long duration of anaesthesia (AOR=3.49, CI=1.64-7.43). Factors associated with postoperative vomiting were previous postoperative nausea, vomiting (AOR=3.93, CI=1.70-9.07), major operation (AOR=3.07, CI=1.25-7.55), gynaecology operation (AOR=2.58, CI=1.24-5.39) and long duration of anaesthesia (AOR=3.67, CI=1.73-7.78). Conclusion and recommendations: The prevalence of postoperative nausea and vomiting was high at the University of Gondar teaching hospital compared with most studies conducted in Africa and the rest of the world. We suggest the use of anti-emetic prophylaxis and the introduction of postoperative nausea and vomiting treatment protocols at the University of Gondar teaching hospital.
description: Ethiopian Journal of Health and Biomedical Sciences, Vol. 6 No. 1 (2014): ETHIOPIAN JOURNAL OF HEALTH AND BIOMEDICAL SCIENCES
Sonnenfleckenzeichnung Nr. 21186.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 21.09.1962, erstellt von Werner Scheidegger
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1962

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Später wurden ergänzende Angaben aufgrund auswärtiger Beobachtungen direkt auf der Fleckenzeichnung hinzugefügt. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Vascular Endothelial Cells and Pulmonary Epitheilial Cells: Uptake and Response to Metal Oxide Nanoparticles
Creators: name: Rice, Cassandra Elizabeth Deering
Publisher: name: University of Utah
Year: 2012
Subjects: Epithelial cells
Metal nanoparticles
Silicon dioxide
Receptors
Cytokine

description: Nanomaterials are promoted as a promising technology in highly diverse  applications, but concerns about risks of these materials have stimulated extensive  research on the adverse effects of manufactured nanoparticles. Our research utilized ex  vivo tissues to study quantification of unlabeled nanoparticles in biological media and in  vitro cultures of human cells, treated with suspensions of low-solubility metal oxide  materials, to study uptake, cell signaling, and gene regulation. The effects of  nanoparticles on the cardiovascular system occur because inhaled nanoparticles may  enter systemic circulation, or are directly injected into systemic circulation for medical  applications, causing adverse health effects. Silicon dioxide (Si02) particles with sizes  between 20-100 nm were used in our studies because they have many commercial and  medical applications and can be readily modified with surface functional groups. Our  hypothesis is two-fold. First, we hypothesize that tissue uptake and deposition of Si02  nanoparticles can be measured by sedimentation field-flow fractionation (SdFFF) after  particle isolation using enzyme digestion. We also hypothesize that the adverse effects  associated with nanoparticle exposures are greater in vascular cells than pulmonary and  colorectal cell lines, due to the formation of reactive oxygen species, which may  stimulate apoptosis. The results presented here demonstrate the cellular uptake of nano  and submicron-sized Si02 using the traditional methods of microscopy. Additionally, the  method of SdFFF, which is typically used to separate macromolecules, colloids, and particles, was used in combination with enzyme digestion to provide a novel, useful  method to simultaneously measure both the size and concentration of particles in tissues.  The toxic effects of metal oxide particle treatment on vascular, pulmonary and colon cells  were evaluated. Significant cytotoxicity and inflammation were observed with vascular  endothelial cells, but little to no adverse effects were seen in pulmonary and colon cancer  epithelial cells at concentrations of 1-316 pg/cm2. Nano-sized SiC>2 caused apoptosis in  vascular endothelial cells that was ameliorated by pretreatment with 5 mM of the  antioxidant, N-acetyl-L-cysteine. Our results show that exposures of endothelial cells to  high concentrations of nano-sized Si02 may have serious adverse cardiovascular  consequences. Furthermore, these results provide insights into treatments, such as the  use of antioxidants, for persons exposed to significant levels of metal oxide nanoparticles.
SURVIVAL AND PREDICTORS OF THE SURVIVAL OF HIV-INFECTED ADULT PATIENTS TAKING HAART AT HAWASSA UNIVERSITY REFERRAL HOSPITAL
Creators: name: M, Asressie
name: K, Yigzaw
name: A, Telake
Publisher: name: Ethiopian Journal of Health and Biomedical Sciences
Year: 2014

description: Introduction: The discovery of the combined antiretroviral therapy was a turning point which changed the outlook about AIDS from a virtually death sentence to a manageable chronic disease. Although the field of HIV medicine is rapidly changing, there is lack of recent knowledge about the survival and the predictors of the survival of HIV-infected patients taking HAART in the study area. Objective: To assess the predictors of the survival of patients living with HIV/AIDS who are taking highly active antiretroviral therapy. Methods: Retrospective three-year follow up (cohort) study was employed for randomly selected 436 HIV infected adult patients who were HAART initiated at Hawassa University Referral Hospital. Data was collected from the patients’ records by trained BSc. nurses who used a pretested and structured checklist. The Kaplan-Meier and the Cox proportional hazards model were used to estimate survival after HAART initiation and to identify predictors, respectively. Descriptive summary statistics, bivariate, and multivariate regression analyses were used for significance tests. Result: Two hundred fifty-seven (58.9%) study subjects were females and the median age of patients was 31years (IQR=27-39). Three hundred and twelve (71.5%) of the subjects were below 10th grade in educational status with 199 (45.6%) ambulatory and bedridden in functional status, 413 (94.7%) in stages III & IV at the initiation of ART. Two hundred eighty-five (65.4%) of the patients had a CD4 cell count of less than 200cells/µl, and there were a total of 52 deaths during the follow up period of which 32 (61.5%) & 42 (80.8%) died within the first three and six months of initiation of therapy, respectively. The cumulative probabilities of survival of these patients were 90%, 88%, 87.5% and 87% at 6, 12, 24 and 36 months, respectively. Male sex (HR=1.961, P-value=0.038), bedridden (HR=6.023, P-value<0.001) functional status, CD4 count below 50cells/µl (HR=3.388, P-value=0.012), not using Cotrimoxazole chemoprophylaxis (HR=2.883, P-value= 0.018) and hemoglobin level below 10mg/dl (HR=6.393, P-value<0.001) were statistically significant predictors of survival, indicating that being male, bedridden, CD4 count of less than 50cells/µl, not using chemoprophylaxis, and hemoglobin level <10mg/dl increase the risk of death of HIV infected patients who are taking ART with respective hazard ratios. Conclusion: Delayed initiation of ART and not using chemoprophylaxis are poor prognostic factors of survival for HIV/AIDS patients.
description: Ethiopian Journal of Health and Biomedical Sciences, Vol. 6 No. 1 (2014): ETHIOPIAN JOURNAL OF HEALTH AND BIOMEDICAL SCIENCES
Interface of a commercial electrocardiogram system to HELP
Creators: name: Tarng, Ween-Ping
Publisher: name: University of Utah
Year: 2012
Subjects: Instrumentation

description: The Electrocardiogram (ECG) Department at the Latter-Day-Saints Hospital has used a computerized ECG system for more than 15 years. In this automated system, all the ECG data were analyzed by a set of Health Evaluation Logic Processing (HELP) frames and the resulting interpretations were stored in the patient data base. In 1987, the Department replaced this system with the Marquette Universal System for Electrocardiography (MUSE). As a stand alone system, MUSE stores all its ECG interpretations in its own data base. Since the HELP system serves as the information center for the Hospital, it is necessary to establish an interface between the HELP and the MUSE systems so that the MUSE ECG interpretations can be stored in HELP and become available to the clinical personnel.  To integrate the MUSE system to HELP, one first faces the challenge of terminology difference between these two systems. According to the degree of compatibility among the terms used, there exist three categories of the MUSE interpretations. Different strategies were used in defining the Pointer to TeXT (PTXT) codes for these three categories of MUSE interpretations. In the process of constituting the PTXT representations for the MUSE system, care was taken to avoid duplicating existing codes in the HELP data dictionary.  The second issue in interfacing the MUSE system to HELP lies in understanding the MUSE statements. A MUSE statement may contain different interpretations. Therefore, if a MUSE statement is to be stored in the HELP system, the interpretations constituting this statement must be understood so that their corresponding PTXT codes can be stored. In order to do this, a parsing algorithm was designed to detect different interpretations used in a statement and store their PTXT representations to HELP.  After the implementation of the interface software, it was found that the software was constantly ready to capture the MUSE data into the HELP system. In addition, all the MUSE EGG statements, after being processed by the parsing algorithm, had been transferred to semantically corresponding interpretations. These interpretations were stored as patient records and were available to the reviewing physicians throughout LDS Hospital.
Back transport of infants from neonatal intensive care units for convalescent care: is it safe?
Creators: name: Lynch, Terese Marie
Publisher: name: University of Utah
Year: 2012
Subjects: Necrotizing Enterocolitis
Apnea
Bradycardia

description: This retrospective study compared the clinical courses of 55 back-transported infants with those of 49 infants who remained within regional perinatal center for convalescent care. Although the mean birth weight and mean gestational age of the back-transported infants were significantly less than that of the nontransported infants (£ <0.05), the two groups did not differ in the incidence of respiratory disease, infectious complications, hyperbilirubinemia, patent ductus arteriosus, intraventricular hemorrhage, or necrotizing enterocolitis. The mean daily weight gain of the back-transported infants was significantly greater than that of the nontransported infants (£
Role of autonomous activity of the uterus in determining drug responses and the interrelations of drugs in producing uterine responses
Creators: name: Daniel, Edwin E.
Publisher: name: University of Utah
Year: 2012

description: There seem to be at least two possible viewpoints with which a thesis problem may be attacked.  First, and perhaps more common, is the viewpoint that some limited aspects must be studied exhaustively.  The second viewpoint is that a problem should be surveyed in order that the approaches for postdoctoral work may be uncovered.  There are certain advantages to each approach.  However, in the study undertaken here, the nature of the problem itself tended to force the adoption of the second point of view.  Thus the question of an explanation for the finding that certain drugs diminished contractions induced by subsequent drugs was the starting point.  However, the state of knowledge of smooth muscle physiology and pharmacology did not seem to allow even a place for this finding, much less offer of ready explanation.  Therefore, it became necessary to examine critically many of the dogmas concerning smooth muscle.  In the course of these reexaminations many unusual results were obtained, each leading to further reexaminations of accepted theories until finally the greatest difficulty became the finding of a convenient stopping point.  Almost inevitable when a problem progresses in this manner, many loose ends remain.  However, it seems that the overall picture which appeared will be of aid not only in eventually trying together these loose ends, but also in elucidating the mechanisms of inducing contractions of smooth muscle.
Sonnenfleckenzeichnung Nr. 21177.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 09.09.1962, erstellt von Werner Scheidegger
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1962

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Später wurden ergänzende Angaben aufgrund auswärtiger Beobachtungen direkt auf der Fleckenzeichnung hinzugefügt. Unter Umständen sind Angaben zu Protuberanzen vermerkt
An examination of the behavior patterns of two Utah male adolescents who committed suicide: comparative case studies.
Creators: name: Bacon, Marlene P.
Publisher: name: University of Utah
Year: 2012
Subjects: Utah
Case Studies

description: Although the literature indicates that there is a large body of professional knowledge available about adolescent suicide, the body of literature focusing on adolescent suicide indicates that very little is known about the lifelong behavior patterns of teens who commit suicide. The purpose of this beginning study was to increase the understanding of the development of behavior patterns of Utah adolescent males who commit suicide. The major research questions were the following: (a) What individual factors, environmental factors, and critical life incidents were perceived by informants as being important in the development of behavior patterns over the lifetime of two Utah male adolescents from similar backgrounds who committed suicide? (b) In what ways was behavior observed by informants approximately 6 months prior to death the same or different than behavior patterns the adolescent exhibited normally? (c) In what ways were the reported behavior patterns of the male adolescents in the study similar, and in what ways were the behavior patterns different? Two Utah male adolescents who committed suicide were studied using an exploratory, comparative case study research design. The study was limited to interview data from family members, friends, and community contacts who had had a close relationship with the deceased and who could report on their perceptions of his behavior patterns. The study was situated within a naturalistic paradigm, and the interviews were conducted within a holistically focused, chronological framework. The cases were purposively selected according to inclusion criteria and matched as closely as possible. All the participants held the deceased in high regard and were grieving his loss, which was a source of bias in the study. The major finding in the study was the perception that both youths were suffering from adolescent depression. Informants reported that the teens' depression began in puberty and was the major influence on changes in behavior patterns that were noticed approximately 6 months prior to the adolescents' deaths. The results support the need for nurses to be aware of the potential for suicide in depressed adolescents and to be vigilant for signs and symptoms of depression in adolescents with whom they have contact.
PNEUMONIA IN CHILDREN AT A UNIVERSITY HOSPITAL IN ADDIS ABABA, ETHIOPIA: ANALYSIS OF POTENTIAL RISK FACTORS
Creators: name: Dessie, Azene
name: Mekasha, Amha
name: Enquselassie, Fikre
Publisher: name: Ethiopian Journal of Health and Biomedical Sciences
Year: 2014

description: Background: Pneumonia is the single most important cause of morbidity and mortality in children below 5 years in developing countries including Ethiopia. However, much is not known about the specific risk factors of childhood pneumonia. Objective: To identify childhood, parental sociodemographic and household characteristics as risk factors of pneumonia in children under 5 years of age. Methods: A case control study was conducted at a tertiary teaching hospital in Addis Ababa. Cases were children below 5 years with a diagnosis of pneumonia (n=67). For each case, two controls admitted for other reasons to the same hospital during the same period were selected. Results: Children who were not vaccinated at all had a higher risk of developing pneumonia (OR=4.12). The odds of developing pneumonia in malnourished children was significantly high (OR=14.89). Children whose fathers were unemployed had 2.72 times higher risk of developing pneumonia compared to those whose fathers were employed. Low monthly income was also significantly associated with pneumonia. Use of cooking materials such as wood, charcoal, dung and kerosene were significantly associated with pneumonia. The presence of acute respiratory infections in the household within two weeks of the occurrence of pneumonia was strongly associated with this acute lower respiratory tract infection (p=0.00001). Conclusion: Malnutrition, presence of ARI in the household, use of cooking materials such as wood, charcoal, kerosene in the household and paternal unemployment were found to be risk factors for childhood pneumonia. In addition to integrated effort with other sectors, strengthening the health extension program is recommended to apply interventions targeted at the identified risk factors.
description: Ethiopian Journal of Health and Biomedical Sciences, Vol. 6 No. 1 (2014): ETHIOPIAN JOURNAL OF HEALTH AND BIOMEDICAL SCIENCES
Healing of the perineum
Creators: name: Davidson, Nancy Rosanna Storm
Publisher: name: University of Utah
Year: 2012
Subjects: Sitz Bath
Shower: Comfort

description: Healing of the perineum after vaginal delivery and episiotomy or first or second degree laceration of the perineum was studied in 32 women over a 14 day period and in 11 of these women over a 28 day period.  Sixteen women in the study group used moist heat to the perineum in the form of a sitz bath one to three times a day for seven days in addition to a daily shower, and recorded evaluations of their perineal comfort before and after using the sitz bath. Sixteen women in the control group recorded evaluations of their perineal comfort before and after a daily shower.  There was no difference found between groups in the rate of healing of the perineum as determined by a total score evaluating signs of the healing process.  The group using a sitz bath reflected a higher mean score (indicating more tissue trauma) for the first 14 days after delivery than did the group using a shower only but this difference was not significant.  Both groups showed a trial effect indicating that healing occurred over time in all patients.  There was no significant difference found between groups in comfort comparing the effect of a sitz bath and a shower.  Both groups were significantly more comfortable after either the sitz bath or the shower and there was a significant comfort by groups interaction that indicated that the group using the sitz bath became more comfortable at a faster rate than did the group using the shower. However, the mean score of the sitz bath group before using the sitz bath was higher than that of the group using the shower, indicating that more initial discomfort was present in the group using the sitz bath.
Sonnenfleckenzeichnung Nr. 21250.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 17.12.1962, erstellt von Werner Scheidegger
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1962

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Direct accessibility of the fundamental constants governing light-by-light scattering
Creators: name: Karbstein, Felix
name: Ullmann, Daniel
name: Mosman, Elena A.
name: Zepf, Matt
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum field theory predicts the vacuum to exhibit a non-linear response to strong electromagnetic fields. This fundamental tenet has remained experimentally challenging and is yet to be tested in the laboratory. We present proof of concept and detailed theoretical analysis of an experimental setup for precision measurements of the quantum vacuum signal generated by the collision of a brilliant x-ray probe with a high-intensity pump laser. The signal features components polarised parallel and perpendicularly to the incident x-ray probe. Our proof-of-concept measurements show that the background can be efficiently suppressed by many orders of magnitude which should not only facilitate a detection of the perpendicularly polarised component of non-linear vacuum response, but even make the parallel polarised component experimentally accessible for the first time. Remarkably, the angular separation of the signal from the intense x-ray probe enables precision measurements even in presence of pump fluctuations and alignment jitter. This provides direct access to the low-energy constants governing light-by-light scattering.
description: 5 pages, 4 figures
Sonnenfleckenzeichnung Nr. 21190.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.09.1962, erstellt von Werner Scheidegger
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1962

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Effects of occupational role strain, life change events, and prenatal risk factors on obstetrical outcomes in hospital nurses.
Creators: name: Siebe, Rhonda K.
Publisher: name: University of Utah
Year: 2012
Subjects: Maternity Nursing
Life Change Events

description: The relationships between stress and pregnancy outcomes in hospital nurses were examined retrospectively.  Nurses who had singleton pregnancies completed a questionnaire on perceived role strain, life changes, and perinatal complications.  Role strain was significantly correlated to complications during antepartum and marginally related to postpartal problems.  Nurses who experienced increased role strain were noted to engender many life changes.  If the life changes they experienced were undesirable and only moderately controllable, regardless of role strain, they correlated with intrapartal complications.  If problems were noted antepartally, they correlated highly with adverse intrapartal and postpartal outcomes.  Complications, intrapartum to postpartum and intrapartum to newborn, were significantly related.  Stress did not correlate significantly to newborn complications; nevertheless, the incidence of birth defects was high.  No significant differences existed between intensive care and transitional care nurses in terms of role strain or pregnancy complications.
Sonnenfleckenzeichnung Nr. 21218.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 29.10.1962, erstellt von Helmut Müller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1962

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Später wurden ergänzende Angaben aufgrund auswärtiger Beobachtungen direkt auf der Fleckenzeichnung hinzugefügt. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Extended far-ultraviolet emission in distant dwarf galaxies
Creators: name: Borgohain, Anshuman
name: Saha, Kanak
name: Elmegreen, Bruce
name: Gogoi, Rupjyoti
name: Combes, Francoise
name: Tandon, Shyam N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Blue Compact Dwarfs (BCDs) are low-luminosity (M$_{K} > -21$ mag), metal-poor ($\frac{1}{50}$ $\le Z/Z_{\odot} \le\frac{1}{2}$), centrally concentrated galaxies with bright clumps of star-formation. Cosmological surface brightness dimming and small size limit their detection at high redshifts, making their formation process difficult to observe. Observations of BCDs are needed at intermediate redshifts, where they are still young enough to show their formative stages, particularly in the outer regions where cosmic gas accretion should drive evolution. Here, we report the discovery of excess far-ultraviolet (FUV) emission in the outer regions of 11 BCDs in the GOODS-South field at redshifts between 0.1 and 0.24, corresponding to look back times of 1.3 - 2.8 Gyr in standard cosmology. These observations were made by the Ultra-Violet Imaging Telescope (UVIT) on AstroSat. For ten BCDs, the radial profiles of intrinsic FUV emission, corrected for the instrument point spread function, have larger scale-lengths than their optical counterparts observed with the Hubble Space Telescope. Such shallow FUV profiles suggest extended star-formation in cosmically accreting disks. Clumpy structure in the FUV also suggests the outer FUV disks are gravitationally unstable. Dynamical friction on the clumps drives them inward at an average rate exceeding $10^6~M_{\odot}$Gyr$^{-1}$.
description: 23 pages, 7 Figures, 5 Tables. Published on 20th July, 2022, by Nature
Corydalidae Leach 1815
Creators: name: Martins, Caleb C.
name: Ardila-Camacho, Adrian
name: Rivera-Gasperín, Sara Lariza
name: Oswald, John D.
name: Liu, Xingyue
name: Contreras-Ramos, Atilano
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Megaloptera
Corydalidae

description: Family Corydalidae Leach in Brewster, 1815
Corydalidae Leach in Brewster, 1815: 138 (as Corydalida) [type genus: Corydalus Latreille, 1802: 290]. — Newman, 1853: ccii [= 202] (as Corydalidae).
description: Published as part of Martins, Caleb C., Ardila-Camacho, Adrian, Rivera-Gasperín, Sara Lariza, Oswald, John D., Liu, Xingyue & Contreras-Ramos, Atilano, 2022, A world checklist of extant and extinct species of Megaloptera (Insecta: Neuropterida), pp. 1-93 in European Journal of Taxonomy 812 (1) on page 13, DOI: 10.5852/ejt.2022.812.1727, http://zenodo.org/record/6448732
INCIDENCE OF TUBERCULOSIS AND ASSOCIATED FACTORS AMONG PATIENTS ATTENDING THE HIV CLINIC AT FELEGE-HIWOT REFERRAL HOSPITAL, BAHR DAR, NORTHWEST ETHIOPIA
Creators: name: Birhan, Kassa
name: Kebede, Yigzaw
Publisher: name: Ethiopian Journal of Health and Biomedical Sciences
Year: 2014

description: Background: Although a highly active anti retroviral therapy (HAART) reduces the incidence of tuberculosis in the developed world, it remains poorly documented in resource-poor settings including the Amhara Region of Ethiopia. Objectives: The objective was to assess the incidence and associated risk factors of TB among HIV clients under follow up at Felege Hiwot Referral Hospital (FHRH) Methods: A retrospective cohort study with comparison groups of Pre-ART and ART was conducted at FHRH HIV Clinic at Bahir Dar, north-west Ethiopia. The charts of 219 Pre-ART and 219 ART patients were reviewed. The required sample was selected by the systematic sampling technique and was collected from April 1 to 30, 2010. Incidence rates of TB and relative risks were computed for the different comparison groups Results: The cumulative incidence of TB was 9.6% among patients on pre-ART chronic HIV care and 3.2% among those receiving HAART (RR =0.33). Patients at the lower WHO clinical stages (Stage I-III) had lesser risk of developing TB compared to patients at WHO clinical stage IV (AOR=0.08). Patients with a baseline CD4 cell count of <200 (AOR= 11.54) and hematocrit level of less than 30 (AOR=18.12) were at higher risk of developing TB. Those who didn’t take Cotrimoxazole prophylaxis had higher risk of developing TB (AOR= 36.24) Conclusion: Incidence of TB was high among HIV patients who were not receiving ART. Low baseline CD4 cell count, low HCT, advanced WHO clinical stage, and not receiving cotrimoxazole preventive therapy were found to be at a higher risk of developing TB. An early initiation of ART may be considered to reduce the incidence of TB. Frequent checking for anaemia and maximizing the cotrimoxazole preventive therapy is also recommended.
description: Ethiopian Journal of Health and Biomedical Sciences, Vol. 6 No. 1 (2014): ETHIOPIAN JOURNAL OF HEALTH AND BIOMEDICAL SCIENCES
Sonnenfleckenzeichnung Nr. 21256.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 28.12.1962, erstellt von Helmut Müller.
Zusätzlich ist vermerkt: Kern-Refraktor
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1962

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Kern-Merz-Refraktor.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Sonnenfleckenzeichnung unnummeriert, einen Zürcher Lückentag ergänzend.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 16.10.1962, erstellt von Dendis am Skalnate Pleso Observatorium
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1962

description: Bleistiftzeichnung mit Tinte und Farbstift, erstellt als Zeichnung nach eigener Vorlage am Skalnate Pleso Observatorium. Es sind zudem statistische Angaben für die Bestimmung der Fleckenrelativzahl notiert. Instrument: unbekannt, Sonnenbild D = 25 cm
Sonnenfleckenzeichnung Nr. 21142.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 05.08.1962, erstellt von Helmut Müller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1962

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Später wurden ergänzende Angaben aufgrund auswärtiger Beobachtungen direkt auf der Fleckenzeichnung hinzugefügt. Unter Umständen sind Angaben zu Protuberanzen vermerkt
The contribution of rehabilitative nursing techniques to the recovery of patients who have had cerebral vascular accidents
Creators: name: Klassen, Loretta Brooks
Publisher: name: University of Utah
Year: 2012
Subjects: Rehabiltation Nursing
Personnel

description: This study represents the attempt of the investigator to determine the effectiveness of a consistent rehabilitative nursing care plan applied to a selected group of patients with cerebral vascular accidents.  For the experimental group a 23 bed medical unit in a 275 bed private hospital was selected fro the study.  An inservice teaching program of basic nursing measures directed toward rehabilitation of the patient with cerebral vascular accident was developed by the investigator.  All staff members in the experimental unit attended the inservice program.  Basic nursing measures advocated in the teaching program were adapted to individual needs of the experimental group of patients.  The investigator supervised the nursing care give to the experimental group. The experimental group consisted of five male patients between the ages of fifty-four and sixty-five.  The cerebral vascular accident of each was caused by a thrombosis, and the prognosis based on the doctor's judgment was fair to good with expected progress. The study in this unit covered a period of four months.  A record of the progress of this group in ambulation and self care activity was kept for the duration of the hospital stay. A medical unit in a private hospital with a 382 bed capacity and a medical unit in a private hospital with a 450 bed capacity were selected as sources for the control group.  The five patients with cerebral vascular accidents in the control group met the same criteria for selection as the experimental group.   The selection of patients was done in the same four month period.  The control hospitals did not receive the inservice teaching program of nursing care advocated by the teaching program. A review of literature was done pointing out the need for more stress to be placed on rehabilitation in nursing practice.  The institution of immediate rehabilitative nursing care measures on patients with cerebral vascular accidents was emphasized.  The inservice teaching plan developed for the study by the investigator is centered a round four basic nursing measures:  positioning, range of motion, self care activities, and ambulation. The t test was use to test the significance of the difference between the progress of the experimental and control group in self care activity and ambulation.  Findings of this study were:  A sample of selected patients with a cerebral vascular accident who received a consistent nursing care plan directed toward rehabilitation assumed self care activities more readily than a comparative control group, members of which did not receive this nursing care plan.  The patients under this nursing care plan also ambulated more readily then those who were not.  A significant statistical difference was shown.  The investigator recommends as a result of this study and a review of literature that more scientific research in the application of nursing care should be done.
Corydalinae Leach 1815
Creators: name: Martins, Caleb C.
name: Ardila-Camacho, Adrian
name: Rivera-Gasperín, Sara Lariza
name: Oswald, John D.
name: Liu, Xingyue
name: Contreras-Ramos, Atilano
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Megaloptera
Corydalidae

description: Subfamily Corydalinae Leach in Brewster, 1815
Corydalinae Leach in Brewster, 1815: 138 (as Corydalida) [type genus: Corydalus Latreille, 1802: 290]. — Davis 1903: 452 (as Corydalinae).
Nevrominae van der Weele, 1909: 250 (as Neurominae) [type genus: Nevromus Rambur, 1842: 441].
Doeringiini Navás, 1925b: 210 (as Doeringini) [type genus: Doeringia Navás, 1925b: 207].
Hermini Banks, 1940: 179 (as Hermesini) [type genus: Hermes Gray in Cuvier, 1832: 332].
description: Published as part of Martins, Caleb C., Ardila-Camacho, Adrian, Rivera-Gasperín, Sara Lariza, Oswald, John D., Liu, Xingyue & Contreras-Ramos, Atilano, 2022, A world checklist of extant and extinct species of Megaloptera (Insecta: Neuropterida), pp. 1-93 in European Journal of Taxonomy 812 (1) on page 13, DOI: 10.5852/ejt.2022.812.1727, http://zenodo.org/record/6448732
The Scholarly productivity of inbred and noninbred faculty in schools of nursing with graduate and undergraduate programs
Creators: name: Sato, Alyce
Publisher: name: University of Utah
Year: 2012
Subjects: Medical Colleges
Scholarly Publsihing
Inbred Faculty
Nursing Education
Nursing: School Administration: Higher Education
School Faculty: Health Education

description: The purpose of this study was to examine if there was a difference in the scholarly productivity of noninbred and inbred faculty in schools of nursing that have graduate and undergraduate programs. Also, interactions between the variables--faculty status, academic rank, scholarly productivity, highest degree, private/public control, and the American Association of University Professors' (AAUP) categories of institutions of higher education--were investigated. Scholarly productivity was defined as research activities, professional activities, and scholarly publications.  The sample included 1671 faculty on tenure track from 36 schools of nursing that received continuing National League for Nursing accreditation during 1985-1988. Data were retrieved from faculty resumes in Self-Study Reports. Chi-square and multivariate analysis of variance were used to statistically analyze the data.  The findings revealed that the most significant interactions occurred between scholarly publications and research activities by academic rank, highest degree, private/public control, and AAUP schools of nursing. There were no significant interactions by noninbred or inbred status, the majority of the faculty had no research or scholarly publications.  There were significant interactions between professional activities by noninbred faculty and academic rank, highest degree, private/public control, and AAUP schools of nursing. Noninbred faculty in private schools of nursing had the highest mean in professional activities.
Sonnenfleckenzeichnung Nr. 21153.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 16.08.1962, erstellt von Helmut Müller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1962

description: Bleistiftzeichnung mit Tinte und Farbstift überschrieben, erstellt als Projektionsbildzeichnung in der Eidgenössischen Sternwarte Zürich. Instrument: Zeiss Coudé-Refraktor (150/2250 mm).
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden mit Bleistift auf einem Vordruck eingetragen. Später wurden ergänzende Angaben aufgrund auswärtiger Beobachtungen direkt auf der Fleckenzeichnung hinzugefügt. Unter Umständen sind Angaben zu Protuberanzen vermerkt
Rapid determination of single substitutional nitrogen N$_s^0$ concentration in diamond from UV-Vis spectroscopy
Creators: name: Luo, T.
name: Lindner, L.
name: Blinder, R.
name: Capelli, M.
name: Langer, J.
name: Cimalla, V.
name: Hahl, F. A.
name: Vidal, X.
name: Jeske, J.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Single substitutional nitrogen atoms N$_s^0$ are the prerequisite to create nitrogen-vacancy (NV) centers in diamonds. They serve as the electron donors to create the desired NV$^-$ center, provide charge stability against photo-ionisation, but also are the main source of decoherence. Therefore, precise and quick determination of N$_s^0$ concentration is a key advantage to a multitude of NV-related research in terms of material improvement as well as applications. Here we present a method to determine the N$_s^0$ concentration based on absorption spectroscopy in the UV-Visible range and fitting the 270 nm absorption band. UV-Visible spectroscopy has experimental simplicity and widespread availability that bear advantages over established methods. It allows a rapid determination of N$_s^0$ densities, even for large numbers of samples. Our method shows further advantages in determining low concentrations as well as the ability to measure locally, which is highly relevant for diamonds with largely varying N$_s^0$ concentrations in a single crystal. A cross-check with electron paramagnetic resonance (EPR) shows high reliability of our method and yields the absorption cross section of the 270~nm absorption band, $σ=1.96\pm0.15$ cm$^{-1}\cdot$ppm$^{-1}$ (in common logarithm) or $σ_e=4.51\pm0.35$ cm$^{-1}\cdot$ppm$^{-1}$ (in natural logarithm), which serves as a reference to determine N$_s^0$ concentrations, and makes our method applicable for others without the need for a known N$_s^0$-reference sample and calibration. We provide a rapid, practical and replicable pathway that is independent of the machine used and can be widely implemented as a standard characterization method for the determination of N$_s^0$ concentrations.
description: 6 pages, 3 figures