cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effect of precursor materials on the properties of Si doped boron carbide
Creators: name: Koelle, Matthew Michael
Publisher: name: No Publisher Supplied
Year: 2022

description: Boron carbide is a ceramic notable for its high hardness and low density. Siliconis commonly used to dope boron carbide in order to increase its resistance to failure by amorphization. These doped materials are commonly manufactured with high purity boron and silicon hexaboride as precursor powders, but these materials suffer from high costs and limited supply chains. This research shows that substituting for boron of lower purity or utilizing pure Si powder instead of SiB6 does not have a significant effect on critical properties such as fracture toughness or amorphization resistance. Small increases in hardness were reported for samples fabricated with SiB6 compared to Si, but the differences were not statistically significant. The only measured physical properties showing significant differences were with respect to doping and elastic modulus of the material. Samples prepared with Si instead of SiB6 showed decreased Si doping after hot pressing, however this difference does not exist for samples prepared via spark plasma sintering so altering sintering parameters can alleviate this difference. The Young’s modulus was significantly lower for materials prepared with lower purity boron as well as samples using Si instead of SiB6 as the silicon source. These findings indicate that substitution of precursor materials in Si doped boron carbide is possible with very little change to the properties of the material. This allows for the usage of more economically available and cheaper production pathways for silicon doped boron carbide products.
Camptochaeta formosa Vilkamaa, Hippa & Heller, 2013, sp. n.
Creators: name: Vilkamaa, Pekka
name: Hippa, Heikki
name: Heller, Kai
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Sciaridae
Camptochaeta
Camptochaeta formosa

description: Camptochaeta formosa sp. n.
Figs 3 A, B
Material studied. Holotype male. CANADA, British Columbia, Lake Kinbasket, Canoe Reach near Valemount, sampling station 15, Malaise trap, 12.VI.2010, Cooper, Beauchesne and Associates Ltd. (in CNC).
Description. Male. Head. Brown, antenna paler brown, maxillary palpus very pale brown. Eye bridge 2 facets wide. Face with 9 scattered longer and shorter setae. Clypeus with 1 seta. Maxillary palpus with 3 palpomeres; palpomere 3 longer than palpomere 1, palpomere 2 shortest; palpomere 1 with 1(2) long sharp seta, with a dorsal patch of sensilla; palpomere 2 with 1 long sharp seta and 3 shorter truncate setae, palpomere 3 with 6–8 short truncate setae. Body of antennal flagellomere 4 2.65x as long as wide, the neck shorter than long, the longest setae slightly longer than the width of flagellomere. Thorax. Brown, setae dark. Anterior pronotum with 4 setae. Episternum 1 with 5 setae. Wing. Wings missing in the specimen studied. Halter pale brown. Legs. Pale yellowish brown. Coxal setae dark. Front tibial organ in depression with vestiture in patch. Front tibial spur slightly longer than the tibial width. Abdomen. Pale brown, setae dark. Hypopygium, Figs 3 A, B. Brown, paler than abdomen. Gonocoxa longer than gonostylus. Gonostylus slender with the mesial side impressed at apical half; apicomesially with a few elongated setae; with a large apical tooth, with 3 apical-subapical megasetae, with 2 mesial megasetae close to each other at the apical third, the mesial megasetae slightly larger than the apical ones, all long, narrow and nearly straight; with a poorly differentiated flagellate seta basad of the mesial megasetae. Tegmen much broader than long, with roundish basolateral corners with sclerotized sides.
Discussion. See under Camptochaeta anceps.
Etymology. The name is Latin, formosa, beautiful, referring to the nice and delicate structure of the hypopygium.
description: Published as part of Vilkamaa, Pekka, Hippa, Heikki & Heller, Kai, 2013, Review of the genus Camptochaeta Hippa & Vilkamaa (Diptera, Sciaridae), with the description of nine new species, pp. 476-488 in Zootaxa 3636 (3) on pages 479-480, DOI: 10.11646/zootaxa.3636.3.6, http://zenodo.org/record/220356
Long-term evolution of multimass rotating star clusters
Creators: name: Livernois, Alexander R.
name: Vesperini, Enrico
name: Varri, Anna Lisa
name: Hong, Jongsuk
name: Tiongco, Maria
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the long-term dynamical evolution of the internal kinematics of multimass rotating star clusters. We have performed a set of N-body simulations to follow the internal evolution of clusters with different degrees of initial rotation and have explored the evolution of the rotational velocity, the degree of energy equipartition, and anisotropy in the velocity distribution. Our simulations show that: 1) as the cluster evolves, the rotational velocity develops a dependence on the stellar mass with more massive stars characterised by a more rapid rotation and a peak in the rotation curve closer to the cluster centre than low-mass stars; 2) the degree of energy equipartition in the cluster's intermediate and outer regions depends on the component of the velocity dispersion measured; for more rapidly rotating clusters, the evolution towards energy equipartition is more rapid in the direction of the rotational velocity; 3) the anisotropy in the velocity distribution is stronger for massive stars; 4) both the degree of mass segregation and energy equipartition are characterised by spatial anisotropy; they have a dependence on both $R$ and $z$, correlated with the flattening in the spatial variation of the cluster's density and velocity dispersion, as shown by 2D maps of the mass segregation and energy equipartition on the ($R$-$z$) meridional plane.
description: 11 pages, 10 figures, Published in MNRAS
A self-consistent analytical theory for rotator networks under stochastic forcing: effects of intrinsic noise and common input
Creators: name: Ranft, Jonas
name: Lindner, Benjamin
Publisher: name: arXiv
Year: 2022
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Despite the incredible complexity of our brains' neural networks, theoretical descriptions of neural dynamics have led to profound insights into possible network states and dynamics. It remains challenging to develop theories that apply to spiking networks and thus allow one to characterize the dynamic properties of biologically more realistic networks. Here, we build on recent work by van Meegen & Lindner who have shown that "rotator networks," while considerably simpler than real spiking networks and therefore more amenable to mathematical analysis, still allow to capture dynamical properties of networks of spiking neurons. This framework can be easily extended to the case where individual units receive uncorrelated stochastic input which can be interpreted as intrinsic noise. However, the assumptions of the theory do not apply anymore when the input received by the single rotators is strongly correlated among units. As we show, in this case the network fluctuations become significantly non-Gaussian, which calls for a reworking of the theory. Using a cumulant expansion, we develop a self-consistent analytical theory that accounts for the observed non-Gaussian statistics. Our theory provides a starting point for further studies of more general network setups and information transmission properties of these networks.
description: 21 pages, 7 figures
The social impacts of stormwater management techniques
Creators: name: Apostolaki, S.
name: Jefferies, C.
name: Wild, T.
Publisher: name: DTU Library, Technical University of Denmark (DTU)
Year: 2005
Subjects: subject: Public perception
subject: stormwater pollution
subject: sources
subject: SUDS

description: This paper presents the results of research into the social impacts of stormwater management techniques applied within urban environments. The main aim of the study was to compare public and professional attitudes of stormwater management practices such as Sustainable Urban Drainage Systems (SUDS) and river management techniques. Any new and innovative technology used in residential areas, besides being economically and environmentally acceptable, must also be accepted by the residents. There has been considerable interest in the assessment of the public perception of SUDS in the UK by consultants, developers, the Environment Agency of England and Wales as well as by the Scottish Environment Protection Agency (SEPA). This research was undertaken to inform such interest and also to obtain a more holistic view of the perception by professionals of SUDS. A comparative study of the perceptions of river management in three densely populated European cities facing similar storm water management problems was carried out. The selected cities were Glasgow in Scotland \342\200\223 U. K., an area in west London, England - U.K., and part of Athens \342\200\223 Greece. All sites were located within flood-prone suburban areas, and different river management techniques have been proposed or adopted.
Substance use and associated factors among HIV Positive clients Taking ART form Assela Hospital: A qualitative study
Creators: name: Fekadu, Hailu
Publisher: name: Arsi Journal of Science and Innovation
Year: 2022

description: Background: A growing body of research work focuses on the intersection of substance use and sexual behavior as they affect the risk of HIV infection. Evidence has revealed that alcohol use and substance use are strongly related to the high risk sexual behaviors such as inconsistent condom use and having multiple sexual partners. Objective: The purpose of this study was to explore substance use and associated factors among HIV diagnosed individuals who are taking ART treatment from ART clinic at Assela Hospital, 2019. Methods: A total of ten purposively selected ART users were enrolled in in- depth interview. This study followed a phenomenological study design to explore substance use, and HIV transmission sexual behaviors using the experience of people living with HIV/AIDS. We interviewed five alcohol seller, three daily laborers, one driver and one retire individual from Government employ were asked about substance use history and sexual behaviors. Result: Participants of the study reported that, substance use is highly rampant among people leaving with HIV/AIDS. Although concern that use of ART and counseling during ART follow up might decrease sexual risk- taking behavior; this finding disclosed that unprotected sex is not reduced among HIV infected individuals who are taking ART treatment from Assela Hospital. May, 2019 This study highlights that being jobless, being divorced and working in the bar and being female respondent are main reasons for substance use and inconsistent condom use Conclusion: Peoples living with HIV/AIDS who are on ART are at significant risk for transmitting HIV to uninfected individuals. Positive prevention interventions are urgently needed for people living with HIV/AIDS.
description: Arsi Journal of Science and Innovation , Vol. 4 No. 1 (2019): Arsi Journal of Science and Innovation
Challenges of Re-offenders in Their Re-integration into Their Respective Communities: Ziway Federal Correction Center in Focus
Creators: name: Abebe, Samson
name: Kimo, Kassim
Publisher: name: Arsi Journal of Science and Innovation
Year: 2022

description: The purpose of this study was to explore the challenges that released re- their respective communities the case of Ziway Federal Correction Center. The researcher used a sequential explanatory design to study and understand the nature of problems. The data were collected from 60 participants using questionnaires and out these participants seven participants were also randomly selected for interview. Questionnaires and semi structure interviews were used. Qualitative data were analyzed thematically and the quantitative were analyzed through descriptive statistics. The study revealed that the formation of former - differently. There were no reintegration programs for serving released prisoners while they reintegrate into their respective communities. Moreover, in their transition process re-offenders faced varies obstacles that originated from ineffective pre-release plan in correctional institutions and as well as a post release intervention in various social agencies that deal with re- when leaving correctional facilities have limited human capital that prevent them from accession to different opportunities available in the society. In addition, problems of accommodations, financial constraints, stigmatization, drug addiction problems, low educational backgrounds, lack of positive social support, establishing gang networks had hurdled their integration to their respective communities. Based on the findings of the study some recommendations were also forwarded.
description: Arsi Journal of Science and Innovation , Vol. 4 No. 1 (2019): Arsi Journal of Science and Innovation
20 Briefe, 1 Beilage an [Johann Caspar] Lavater
Creators: name: Luise
Publisher: name: [s.n.]
Year: 1775

description: von Louise, H[erzogin] zu Sachsen[-Weimar] geb. Prinzess[in] zu Hessen
description: Beilage: Brief an Luises Patenkind, Lavaters Tochter Louisa Magdalena (1778-1779) (Nr. 139)
description: Davon 1 Brief ohne Jahr, Jahr ergänzt bei Empfang (Nr. 151)
description: Luise: geb. Prinzessin von Hessen
Camptochaeta kajsae Vilkamaa, Hippa & Heller, 2013, sp. n.
Creators: name: Vilkamaa, Pekka
name: Hippa, Heikki
name: Heller, Kai
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Sciaridae
Camptochaeta
Camptochaeta kajsae

description: Camptochaeta kajsae sp. n.
Figs 4 A, B
Material studied. Holotype male. SWEDEN, Sö, Södertälje, Tullgarns Näs, Rävslaviken, mixed forest next to a pasture, Malaise trap, 19.VIII.2004, Swedish Malaise Trap project (no. 7483 in SMNH). Paratypes. 9 males, Sö, Värmdö, Nämdö, Krokudden, Krokvik, spruce and pine forest, Malaise trap, 23.V–29.VIII.2009, D. Williams & T. Malm (no. 5118–5126 in MZH, PKHH and SMNH); 2 males, GERMANY, Bw, Oberbergen, beech forest, sweepnet, 28.V.2011, K. Heller (no. 7850 and 7854 in PKHH).
Description. Male. Head. Brown, antenna paler brown, maxillary palpus very pale brown. Eye bridge 3 facets wide. Face with 4–5 scattered longer and shorter setae. Clypeus with 1 dark seta. Maxillary palpus with 3 palpomeres; palpomere 1 longer than palpomere 3, palpomere 2 shortest; palpomere 1 with 1 long sharp seta, with a distinct dorsal patch of sensilla; palpomere 2 with 1 long sharp seta and 3–4 shorter truncate setae, palpomere 3 with 3–4 short truncate setae. Body of antennal flagellomere 4 3.0–3.9x as long as wide, the neck shorter than broad, the longest setae slightly longer than the width of flagellomere. Thorax. Brown, setae dark. Anterior pronotum with 2–4 setae. Episternum 1 with 6–8 setae. Wing. Length 1.5–1.9 mm. Width/length 0.40–0.45. R1/R 0.80–0.85. c/ w 0.80. r-m and bM subequal in length, or bM longer, r-m/bM 0.85–0.90, r-m with 1–2 dorsal setae, bM non-setose. Halter pale brown. Legs. Pale yellowish brown. Coxal setae dark. Front tibial organ in depression with vestiture in patch. Front tibial spur slightly longer than the tibial width. Abdomen. Pale brown, setae dark and strong. Hypopygium, Figs 4 A, B. Brown, concolorous with abdomen. Gonostylus with the mesial side strongly impressed; apicomesially with a few elongated setae; with strong apical tooth, with 2 apical megasetae, with 2 mesial megasetae at the apical half, the mesial megasetae long and slender, larger than the apical ones, all almost straight; with a flagellate seta between the mesial megasetae. Tegmen broader than long, with roundish sclerotized basolateral sides.
Discussion. See under Camptochaeta anceps.
Etymology. The species is named after Miss Kajsa Klemhorn, Skogsby, Öland, Sweden for her invaluable help in making the sciarid material collected by the Swedish Taxonomy Intiative available to us.
description: Published as part of Vilkamaa, Pekka, Hippa, Heikki & Heller, Kai, 2013, Review of the genus Camptochaeta Hippa & Vilkamaa (Diptera, Sciaridae), with the description of nine new species, pp. 476-488 in Zootaxa 3636 (3) on pages 480-481, DOI: 10.11646/zootaxa.3636.3.6, http://zenodo.org/record/220356
Stormwater quality as described in the National Stormwater Quality Database (NSQD)
Creators: name: Pitt, R.E.
name: Maestre, A.
Publisher: name: DTU Library, Technical University of Denmark (DTU)
Year: 2005
Subjects: subject: Separate stormwater
subject: National Pollutant Discharge Elimination System
subject: NPDES
subject: municipal separate storm sewer system
subject: MS4
subject: monitoring data

description: The University of Alabama and the Center for Watershed Protection were awarded a U.S. Environmental Protection Agency, Office of Water 104(b)3 grant in 2001 to collect and evaluate stormwater data from a portion of the NPDES (National Pollutant Discharge Elimination System) MS4 (municipal separate storm sewer system) stormwater permit holders. The initial version of this database, the National Stormwater Quality Database (NSQD, version 1.1) is currently being completed. These stormwater quality data and site descriptions are being collected and reviewed to describe the characteristics of national stormwater quality, to provide guidance for future sampling needs, and to enhance local stormwater management activities in areas having limited data. The monitoring data collected over nearly a ten-year period from more than 200 municipalities throughout the country have a great potential in characterizing the quality of stormwater runoff and comparing it against historical benchmarks. This project is creating a national database of stormwater monitoring data collected as part of the existing stormwater permit program, providing a scientific analysis of the data, and providing recommendations for improving the quality and management value of future NPDES monitoring efforts.
Integrating on-site water management practices: A field study in Prince George's County, Maryland
Creators: name: Saravanapavan, T.
name: Shoemaker, L.
name: Zhen, J.
name: Davis, A.
name: Clar, M.
name: Meigs, S.
name: Cheng., M.
Publisher: name: DTU Library, Technical University of Denmark (DTU)
Year: 2005
Subjects: subject: Stormwater
subject: water recycling
subject: grey water
subject: wastewater
subject: best management practices
subject: site-scale

description: Decentralized and integrated stormwater management is becoming an efficient alternative to conventional \342\200\234centralized\342\200\235 structural Best Management Practices (BMPs). Decentralized management techniques, targeted to provide infiltration and minimize runoff closer to the sources, not only meet the stormwater control targets but also maintain the natural ecosystem integrity. On the other hand, conservation and reuse of rainwater and grey water are also emerging as environmentally sensitive \342\200\234green\342\200\235 architectural techniques. Although both stormwater management and green architecture techniques have similarities, the disciplines have had limited interaction in practice. This study takes a holistic approach to site-level water management by examining both in-home and on-site water management concurrently. The analysis was performed on a demonstration site location in Bowie, Maryland, USA that is representative of single family home. A comprehensive site characterization and evaluation of water uses were performed. Water use profiles for the site potable water, grey water, wastewater, rooftop runoff, and stormwater were evaluated to understand the opportunities and alternatives for integrated stormwater management. A number of alternative scenarios were screened through technical, economical, and social feasibilities and potential alternatives were recommended. The study demonstrates the capability and benefits of integrating stormwater, potable water, grey water and wastewater available at the site.
A Stirling engine powered by the concentrated solar energy reflected by a parabolic reflector
Creators: name: Hodzic, Azur
name: Andreasen, Jesper
name: Holm, Martin
name: Renneberg, Morten
name: Møller, Paw
name: Meyer, Knud Erik
Publisher: name: Grøn Dyst 2010
Year: 2010

description: The Stirling engine is a heat engine driven by an external heat source in contrast to a normal internal combustion engine. Because of the external independent heat source the Stirling Engine is very versatile in its fuel selection. In modern industry Stirling Engines runs on bio-fuels or waste heat from electricity production. In our project we will use green sustainable energy, by focusing sun rays directly at a Stirling Engine with a parabolic reflector, to produce power.
7 Briefe an [Johann Caspar] Lavater
Creators: name: Mandach, Bernhard von
Publisher: name: [s.n.]
Year: 1796

description: von Bernhard von Mandach
description: Mit Beischriften von Elisabeth von Mandach (Nr. 216 und Nr. 217) und Johann Georg Müller (Nr. 218)
description: Mandach: 1782-1802, Kadettenhauptmann, nennt sich Lavaters Schüler u. Commissers der Sachen Mandachs
Under-nutrition and Associated Factors among Children aged 6 months to 24 months in Gida Ayana District, East Wollega, Western Ethiopia
Creators: name: Ayana, Bayisa
name: Husein, Gebi
Publisher: name: Arsi Journal of Science and Innovation
Year: 2022

description: Background: Malnutrition is the major public health problem over the world. Asian and Sub-Saharan African countries, including Ethiopia, contribute the highest of all. However, little evidences were documented on nutritional status and associated factors among infants and young children particularly in the study area. Objective: To assess the under-nutrition and associated factors among infants and young children aged 6-24 months. Methods: A community based cross-sectional study was conducted on 379 randomly selected children aged 6 to 24 month old living in Gida Ayana District. Data was collected using structured questionnaire and anthropometric measurements were also taken. The data was entered in to Epi-info version 7 and analyzed using SPSS version 20. Multivariable analysis was carried out to see association between under nutrition and other factors. Results: This study revealed that, 35.9%, 24.8 % and 12.4 % of infants and young children were stunted, underweight and wasted respectively. Started complementary feeding after 6 months (AOR=2.072, 95%CI: 1.215, 3.536) was significantly associated with stunting. Started complementary feeding after 6 months (AOR =2.426, 95%CI: 1.077, 5.463), family monthly income <=2000 birr (AOR=3.151, 95%CI: 1.691, 5.873), age group 12-24 months (AOR= 7.549, 95%CI: 3.84614.815), cough two weeks before this survey (AOR=2.571, 95% CI: 1.129-5.857) were significantly associated with wasting. Conclusion: In this study, prevalence of under-nutrition in the study area was high. Complementary feeding initiation time, family income, age of the child, cough, Family size, immunization status, Vitamin A supplementation and method of child feeding were predictors of child under-nutrition.
description: Arsi Journal of Science and Innovation , Vol. 4 No. 1 (2019): Arsi Journal of Science and Innovation
M-center in low-energy electron irradiated 4H-SiC
Creators: name: Knezevic, Tihomir
name: Hadzipasic, Amira
name: Ohshima, Takeshi
name: Makino, Takahiro
name: Capan, Ivana
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the low-energy electron irradiated 4H-SiC material studied by means of deep-level transient spectroscopy (DLTS) and Laplace-DLTS. Electron irradiation has introduced the following deep level defects: EH1 and EH3 previously assigned to carbon interstitial-related defects, and M-center, a metastable defect also recently assigned to carbon interstitial defects. We propose that EH1 and EH3 are identical to M1 and M3 and assign them to C_i^(= ) (h) and C_i^(0 ) (h), respectively. Moreover, we provide direct evidence that Laplace-DLTS can be used as an excellent tool to distinguish otherwise identical DLTS signals associated with S1 (VSi) and EH1 (Ci).
description: letter
A new method for direct measurement of isotopologue ratios in protoplanetary disks: a case study of the $^{12}$CO/$^{13}$CO ratio in the TW Hya disk
Creators: name: Yoshida, Tomohiro C.
name: Nomura, Hideko
name: Furuya, Kenji
name: Tsukagoshi, Takashi
name: Lee, Seokho
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Planetary systems are thought to be born in protoplanetary disks. Isotope ratios are a powerful tool for investigating the material origin and evolution from molecular clouds to planetary systems via protoplanetary disks. However, it is challenging to measure the isotope (isotopologue) ratios, especially in protoplanetary disks, because the emission lines of major species are saturated. We developed a new method to overcome these challenges by using optically thin line wings induced by thermal broadening. As a first application of the method, we analyzed two carbon monoxide isotopologue lines, $^{12}$CO $3-2$ and $^{13}$CO $3-2$, from archival observations of a protoplanetary disk around TW Hya with the Atacama Large Millimeter/sub-millimeter Array. The $^{12}$CO/$^{13}$CO ratio was estimated to be ${ 20\pm5}$ at disk radii of ${ 70-110}$ au, which is significantly smaller than the value observed in the local interstellar medium, $\sim69$. It implies that an isotope exchange reaction occurs in a low-temperature environment with $\rm C/O>1$ . In contrast, it is suggested that $^{12}$CO/$^{13}$CO is higher than $\sim{ 84}$ in the outer disk ($r > { 130}$ au), which can be explained by the difference in the binding energy of the isotopologues on dust grains and the CO gas depletion processes. Our results imply that the gas-phase $^{12}$CO/$^{13}$CO can vary by a factor of ${ > 4}$ even inside a protoplanetary disk, and therefore, can be used to trace material evolution in disks.
description: 17 pages, 13 figures, accepted for publication in ApJ
Common envelope evolution in born-again planetary nebulae -- Shaping the H-deficient ejecta of A30
Creators: name: Rodríguez-González, J. B.
name: Santamaría, E.
name: Toalá, J. A.
name: Guerrero, M. A.
name: Montoro-Molina, B.
name: Rubio, G.
name: Tafoya, D.
name: Chu, Y. -H.
name: Ramos-Larios, G.
name: Sabin, L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Born-again planetary nebulae (PNe) are extremely rare cases in the evolution of solar-like stars. It is commonly accepted that their central stars (CSPN) experienced a very late thermal pulse (VLTP), ejecting H-deficient material inside the evolved H-rich PN. Given the short duration of this event and the fast subsequent evolution of the CSPN, details of the mass ejection are unknown. We present the first morpho-kinematic model of the H-deficient material surrounding a born-again PN, namely A30. New San Pedro Mártir observations with the Manchester Echelle Spectrograph were recently obtained to map the inner region of A30 which are interpreted by means of the software SHAPE in conjunction with HST WFC3 images. The SHAPE morpho-kinematic model that best reproduces the observations is composed by a disrupted disk tilted $37^\circ$ with respect to the line of sight and a pair of orthogonal opposite bipolar ejections. We confirm previous suggestions that the structures closer to the CSPN present the highest expansion velocities, that is, the disrupted disk expands faster than the farther bipolar features. We propose that the current physical structure and abundance discrepancy of the H-deficient clumps around the CSPN of A30 can be explained by a common envelope phase following the VLTP event. Our proposed scenario is also compared with other known born-again PNe (A58, A78, HuBi1 and the Sakurai's Object).
description: 9 pages, 6 figures, 1 table; Accepted to MNRAS
Constraining spontaneous black hole scalarization in scalar-tensor-Gauss-Bonnet theories with current gravitational-wave data
Creators: name: Wong, Leong Khim
name: Herdeiro, Carlos A. R.
name: Radu, Eugen
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We examine the constraining power of current gravitational-wave data on scalar-tensor-Gauss-Bonnet theories that allow for the spontaneous scalarization of black holes. In the fiducial model that we consider, a slowly rotating black hole must scalarize if its size is comparable to the new length scale $λ$ that the theory introduces, although rapidly rotating black holes of any mass are effectively indistinguishable from their counterparts in general relativity. With this in mind, we use the gravitational-wave event GW190814$\,\unicode{x2014}\,$whose primary black hole has a spin that is bounded to be small, and whose signal shows no evidence of a scalarized primary$\,\unicode{x2014}\,$to rule out a narrow region of the parameter space. In particular, we find that values of ${λ\in [56, 96]~M_\odot}$ are strongly disfavored with a Bayes factor of $0.1$ or less. We also include a second event, GW151226, in our analysis to illustrate what information can be extracted when the spins of both components are poorly measured.
description: Version accepted for publication. 8 pages + references, 4 figures. Some minor clarifications added relative to v1
Value chain Analysis of Coffee (coffee Arabica): the case of Arsi zone, Oromiya National Regional State of Ethiopia
Creators: name: Weldeyohanis, Samuel
name: Amare, Kedir
Publisher: name: Arsi Journal of Science and Innovation
Year: 2022

description: This study aimed at value chains analysis of coffee in selected districts of Arsi zone, Oromia, Ethiopia with specific objectives of identifying the major coffee value chain actors, their roles and functions, identifying the existed coffee marketing channels, analyzing the market performance of actors (benefit distributions) and identifying the constraints and opportunities along the coffee value chain. Descriptive statistics, value chain approaches, market performance analysis were used to analyze the data. The value chain analysis revealed that, input suppliers, producers, primary cooperatives, collectors, wholesalers, exporters and consumers were the main coffee value chain actors. The share of margin in coffee value chain revealed that, producers (51.9%) take the line share followed by exporters (21.26%) and wholesalers (10.31%) while primary cooperative and local collectors are poorly positioned in the coffee value chain in the study area. Constraints like price fluctuation, shortage of market information, higher input cost, limited extension services, long distance to the market, diseases and pests, poor linkage with value chain actors, using inappropriate drying methods and lack of packaging materials are major challenges in coffee value chain in the information, training on pre and post-harvest management developing and
description: Arsi Journal of Science and Innovation , Vol. 4 No. 1 (2019): Arsi Journal of Science and Innovation
Multiplicity Statistics of Stars in the Sagittarius Dwarf Spheroidal Galaxy: Comparison to the Milky Way
Creators: name: Bonidie, Victoria
name: Court, Travis
name: Daher, Christine Mazzola
name: Fielder, Catherine E.
name: Badenes, Carles
name: Newman, Jeffrey
name: Moe, Maxwell
name: Kratter, Kaitlin M.
name: Walker, Matthew G.
name: Majewski, Steven R.
name: Hayes, Christian R.
name: Hasselquist, Sten
name: Stassun, Keivan
name: Kounkel, Marina
name: Dixon, Don
name: Stringfellow, Guy S.
name: Carlberg, Joleen
name: Anguiano, Borja
name: De Lee, Nathan
name: Troup, Nicholas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We use time-resolved spectra from the Apache Point Observatory Galactic Evolution Experiment (APOGEE) to examine the distribution of radial velocity (RV) variations in 249 stars identified as members of the Sagittarius (Sgr) dwarf spheroidal (dSph) galaxy by Hayes et al (2020). We select Milky Way (MW) stars that have stellar parameters ($log(g)$, $T_{eff}$, and $[Fe/H]$) similar to those of the Sagittarius members by means of a k-d tree of dimension 3. We find that the shape of the distribution of RV shifts in Sgr dSph stars is similar to that measured in their MW analogs, but the total fraction of RV variable stars in the Sgr dSph is larger by a factor of $\sim 2$. After ruling out other explanations for this difference, we conclude that the fraction of close binaries in the Sgr dSph is intrinsically higher than in the MW. We discuss the implications of this result for the physical processes leading to the formation of close binaries in dwarf spheroidal and spiral galaxies.
Sonnenfleckenzeichnung Nr. 17459.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 11.03.1950, erstellt von Helmut Müller
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1950

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
Leadership and Performance Status of Agricultural Cooperative Unions: The Case of Arsi Zone, Oromia Region, Ethiopia
Creators: name: Defera, Adugna
name: Amare, Kedir
name: Kedir, Adem
Publisher: name: Arsi Journal of Science and Innovation
Year: 2022

description: The study was undertaken to analyze performance status and identify factors Zone, Oromia Regional State. Both primary and secondary data were used. The primary data collected from 33 Board of Directors, 99 leaders in General Assembly and 27 hired staffs/employees using interview schedule, Focus Group Discussion with members and Key Informant Interview. Both descriptive statistics and econometric model (Exploratory Factor Analysis of Structural Equation Modeling) were used in the analysis. The results revealed that the total averages of financial ratios of Inventory Turnover Ratio, Operating Ratio, Return on Sales and Current Ratio of sampled unions had the decreasing trends from 2014/15 to 2015/16. Moreover, Exploratory Factor Analysis model revealed that age and income were influenced leadership performance significantly and positively. Additionally, the result of principal component analysis showed 4 factors were extracted and statistically significant. The first, second, third and fourth factors were explained 22.39%, 16.74%, 12.82% and 12.19% of variance respectively. Holding large stocks in hand and bunching of some years without auditing cooperative unions were identified as problems. Thus, appropriate authority
description: Arsi Journal of Science and Innovation , Vol. 4 No. 1 (2019): Arsi Journal of Science and Innovation
A BGK model for three-dimensional shallow water problems
Creators: name: Ghidaoui, Mohamed S.
name: Liang, Jun Hong
name: Ghidaoui, Mohamed S.
Publisher: name: XVI International Conference on Computational Methods in Water Resources
Year: 2006

description: This paper focuses on illustrating how the Boltzmann theory can be used to
formulate numerical algorithms for three-dimensional shallow water equations. The
paper begins by showing that the classical three-dimensional shallow water
equations are obtainable from the moments of the Boltzmann Bhatnagar-Gross-Krook
(BGK) equation. This connection is then exploited to formulate a three-dimensional
finite volume for shallow flows in which the fluxes are obtained on the basis of
the BGK equation. The resulting scheme is illustrated using a variety of surface
water problems. The advantages of using the Boltzmann-based to formulate numerical
algorithms for surface water flows are summarized.
Detection of roton and phonon excitations in a spin-orbit coupled Bose-Einstein condensate with a moving barrier
Creators: name: Lyu, Hao
name: Zhang, Yongping
name: Busch, Thomas
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We propose to detect phonon and roton excitations in a two-dimensional Bose-Einstein condensate with Raman-induced spin-orbit coupling by perturbing the atomic cloud with a weak barrier. The two excitation modes can be observed by moving the barrier along different directions in appropriate parameter regimes. Phonon excitations are identified by the appearance of solitary waves, while roton excitations lead to distinctive spatial density modulations. We show that this method can also be used to determine the anisotropic critical velocities of superfluid.
description: 7 pages, 5 figures
Awareness, Utilization and Barriers of Sexual Reproductive Health Service among Adolescent Age 15-19 YRS Old in Arsi Zone Oromia Region Ethiopia
Creators: name: Tejineh, Solomon
name: Fekadu, Hailu
Publisher: name: Arsi Journal of Science and Innovation
Year: 2022

description: Background: In Ethiopia most of sexual reproductive health services are design for adults and they have no favorable condition for youth to utilize the service. Study conducted in Ethiopia indicated that only32% of youth utilized reproductive health service. Objective: To assess awareness, utilization and barriers of sexual and reproductive health service among adolescent age 15-19 old years in selected district of Arsi zone, Ethiopia. Methods: community-based cross sectional study supported with qualitative study design conducted among 734 youth reside in Arsi Zone, Oromia region, Ethiopia. Systematic random sampling technique was used to select the study participants, while purposive sampling used to select focus group. Data entry and analysis were carried out by EPI-info version 3.5.4, and SPSS version 21. Multivariate logistic regression analysis was performed to test significant level and association of variables with 95% confidence interval and p-value <0.05 was taken as statically significant. Result: Out of 734 participants, 331 (43.7%) of adolescent had awareness about youth sexual and reproductive health service. The overall utilization of sexual reproductive service of adolescents were 30.1%. Adolescent had Pocket money AOR=1.73, 95% CI: 1.14- 2.80, adolescent accessed or near by the service AOR=2.53, 95% CI: 1.35- 4.45 were significantly associated with utilization of the services. Conclusion: This study had found that majority of adolescents were not utilizing the reproductive health service of adolescent. Among the factors that affect utilization of sexual and reproductive health service of adolescents were, Adolescent have pocket money and adolescents easily access sexual and reproductive health prone to more utilize the service than their counter parts. To improve utilization, awareness and accessibility of services the responsible bodies like, government, ministry of health, the regional government, the local leaders and parents should be actively involved in the program.
description: Arsi Journal of Science and Innovation , Vol. 3 No. 2 (2018): Arsi Journal of Science and Innovation
Analytical modelling as a basis for monitored natural attenuation studies
Creators: name: Gutierrez-Neri, M.
name: Ham, P.A.S.
name: Schotting, R.J.
name: Lerner, D.N.
name: Gutierrez-Neri, M.
Publisher: name: XVI International Conference on Computational Methods in Water Resources
Year: 2006

description: In this paper, an analytical approach to modelling coupled fringe and core
degradation of a contaminant plume is presented. Explicit steady-state solutions are
derived in three dimensions using a well-known analytical solution for a continuous
planar source problem. These solutions provide rapid methods to evaluate the risk of
subsurface pollution by contaminated groundwater plumes at field sites, particulary
in terms of maximum potential plume length. The resulting fringe-core degradation
model suggests the controlling parameters of natural attenuation are (i) the size of
the contaminant source, (ii) electron acceptop to electron donor ratio, (iii)
transverse dispersivities and (iv) a term (a/v). The latter term provides a simple
check on the relative weights of transport to core degradation and can be used to
estimate the importance of core degradation in the overall plume attenuation. The
developed method is applied to data from a well-known field site to demonstrate its
applicability in MNA studies where both fringe and core degradation occur. Results
demonstrate that only through the consideration of both of these degradation
processes, can the maximum length of the steady-state plume be better approximated.
title: Effects of Running on Sand vs. Stable Ground on Kinetics and Muscle Activities in Individuals With Over-Pronated Feet
Creators: name: Jafarnezhadgero, Amir Ali
name: Amirzadeh, Nasrin
name: Fatollahi, Amir
name: Siahkouhian, Marefat
name: de Souza Castelo Oliveira, Anderson
name: Granacher, Urs
Publisher: name: Universitätsverlag Potsdam
Year: 2022
Subjects: subject: 610 Medizin und Gesundheit

description: Background: In terms of physiological and biomechanical characteristics, over-pronation of the feet has been associated with distinct muscle recruitment patterns and ground reaction forces during running. Objective: The aim of this study was to evaluate the effects of running on sand vs. stable ground on ground-reaction-forces (GRFs) and electromyographic (EMG) activity of lower limb muscles in individuals with over-pronated feet (OPF) compared with healthy controls. Methods: Thirty-three OPF individuals and 33 controls ran at preferred speed and in randomized-order over level-ground and sand. A force-plate was embedded in an 18-m runway to collect GRFs. Muscle activities were recorded using an EMG-system. Data were adjusted for surface-related differences in running speed. Results: Running on sand resulted in lower speed compared with stable ground running (p < 0.001; d = 0.83). Results demonstrated that running on sand produced higher tibialis anterior activity (p = 0.024; d = 0.28). Also, findings indicated larger loading rates (p = 0.004; d = 0.72) and greater vastus medialis (p < 0.001; d = 0.89) and rectus femoris (p = 0.001; d = 0.61) activities in OPF individuals. Controls but not OPF showed significantly lower gluteus-medius activity (p = 0.022; d = 0.63) when running on sand. Conclusion: Running on sand resulted in lower running speed and higher tibialis anterior activity during the loading phase. This may indicate alterations in neuromuscular demands in the distal part of the lower limbs when running on sand. In OPF individuals, higher loading rates together with greater quadriceps activity may constitute a proximal compensatory mechanism for distal surface instability.
description: Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe; 774
1 Brief an [Johann Caspar] Lavater
Creators: name: Mandach, Maria Judith von
name: Mandach, Katharina Elisabeth von
Publisher: name: [s.n.]
Year: 1796

description: von M[aria] J[udith] v[on] Mandach, E[lisabeth] C[atharina] v[on] Mandach
description: Mandach, M.J. und E.C. von: Schwestern
Mergers prompted by dynamics in compact, multiple-star systems: a stellar-reduction case for the massive triple TIC 470710327
Creators: name: Vigna-Gómez, Alejandro
name: Liu, Bin
name: Aguilera-Dena, David R.
name: Grishin, Evgeni
name: Ramirez-Ruiz, Enrico
name: Soares-Furtado, Melinda
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: TIC 470710327, a massive compact hierarchical triple-star system, was recently identified by NASA's Transiting Exoplanet Survey Satellite (TESS). TIC 470710327 is comprised of a compact (1.10 d) circular eclipsing binary, with total mass $\approx 10.9-13.2\ \rm{M_{\odot}}$, and a more massive ($\approx 14-17\ \rm{M_{\odot}}$) eccentric non-eclipsing tertiary in a $52.04$ d orbit. Here we present a progenitor scenario for TIC 470710327 in which '2+2' quadruple dynamics result in Zeipel-Lidov-Kozai (ZLK) resonances that lead to a contact phase of the more massive binary. In this scenario, the two binary systems should form in a very similar manner, and dynamics trigger the merger of the more massive binary either during late phases of star formation or several Myr after the zero-age main sequence (ZAMS), when the stars begin to expand. Any evidence that the tertiary is a highly-magnetised ($\sim 1-10$ kG), slowly-rotating blue main-sequence star would hint towards a quadruple origin. Finally, our scenario suggests that the population of inclined, compact multiple-stellar systems is reduced into co-planar systems, via mergers, late during star formation or early in the main sequence. The elucidation of the origin of TIC 470710327 is crucial in our understanding of multiple massive-star formation and evolution.
description: 5 pages, 3 figures. Accepted for publication at MNRAS Letters
Psychosocial Roles of Gumaa as an Indigenous Conflict Resolution Mechanism: With Particular Reference to West Arsi Zone
Creators: name: Kimo, Kassim
name: Tussa, Abdisa
Publisher: name: Arsi Journal of Science and Innovation
Year: 2022

description: Gumaa is one of the large numbers of Oromo indigenous institutions that helps the community to handle their problems in their own way. It has been, particularly, used to settle blood feuds of various types. Hence, the major purpose of the study was to explore the practices and psychosocial roles of Gumaa as an indigenous conflict resolution mechanism in West Ari Zone. For this purpose, a qualitative research approach was employed in the study. More specifically, three Elders from the victim clan, three elders fro neutral elders (intermediaries) from different clans, and seven and one Tourism officer from the zone) were selected by using purposive sampling. Focus Group Discussion and Semi-structure interviews were used for data collection purpose. Thematic data analysis approach was followed. From the data analysis the following major findings were drawn, Gumaa: has a collective focus, has collective compensation payment, ignores the past and focuses on building peaceful future, avoids the escalation of the conflict, uncommon to use witnesses, has no backdoor deals, protects social
description: Arsi Journal of Science and Innovation , Vol. 3 No. 2 (2018): Arsi Journal of Science and Innovation