Molecular Clouds associated with the Type Ia SNR N103B in the Large Magellanic Cloud

N103B is a Type Ia supernova remnant (SNR) in the Large Magellanic Cloud (LMC). We carried out new $^{12}$CO($J$ = 3-2) and $^{12}$CO($J$ = 1-0) observations using ASTE and ALMA. We have confirmed the existence of a giant molecular cloud (GMC) at $V_\mathrm{LSR}$ $\sim$245 km s$^{-1}$ towards the southeast of the SNR using ASTE $^{12}$CO($J$ = 3-2) data at an angular resolution of $\sim$25$"$ ($\sim$6 pc in the LMC). Using the ALMA $^{12}$CO($J$ = 1-0) data, we have spatially resolved CO clouds along the southeastern edge of the SNR with an angular resolution of $\sim$1.8$"$ ($\sim$0.4 pc in the LMC). The molecular clouds show an expanding gas motion in the position-velocity diagram with an expansion velocity of $\sim5$ km s$^{-1}$. The spatial extent of the expanding shell is roughly similar to that of the SNR. We also find tiny molecular clumps in the directions of optical nebula knots. We present a possible scenario that N103B exploded in the wind-bubble formed by the accretion winds from the progenitor system, and is now interacting with the dense gas wall. This is consistent with a single-degenerate scenario.Comment: 12 pages, 1 table, 8 figures, accepted for publication in The Astrophysical Journal (ApJ

Η μεταναστευτική πολιτική της Αυστραλίας προς την Ελλάδα και οι έλληνες έποικοι της Νοτίου Αυστραλίας 1917–1930

Please note: this article is in Greek. The Australian national policy for immigration towards Greece and the Greek settlers of South Australia (1917–1930): In the years after the First World War Australian Immigration Policy towards Greece was stringent and regulated by the “White Australia Policy” and the employment needs of the country. Despite all these, during the period 1917–1930, Greek settlers or immigrants arrived in Australia in greater than before numbers, with the majority of them settling in Western Australia and New South Wales. A relative small number of Greek immigrants chose South Australia as a place of settlement, where their prospect of finding employment was relatively promising and prosperous. With many employment opportunities in the State’s West Coast townships of Port Pirie and Port Augusta (smelters, gypsum, salt works and railway expansion) Greeks congregated there in large numbers and formed a Community as early as 1924. In this paper we examine the Greek presence in South Australia during the years 1917–1930 in relation with the Immigration Policy of Australia at the time

A huntsman’s bite: envenoming from the Malaysian ‘Black & Gold’, Thelcticopis sp. spider (Arachnida: Araneae: Sparassidae: Sparianthinae)

Most spider species in Malaysia are considered harmless and spider bites are rarely reported. This is partly due to the mild effects from the bite and victims do not seek medical treatment in the hospital. To date, there are few well-documented cases of medically significant bites from indigenous spider species in Malaysia. Here, we report the presentation, clinical management and outcome of two patients following a bite by the yet to be described ‘Black & Gold’ Huntsman spider from the genus Thelcticopis in Malaysia. The first case involved a 42-year-old man who was bitten on the tip of the distal phalanx of his right middle finger and presented with severe pain and local swelling. He was treated symptomatically and was discharged well. The second case involved a 57-year-old woman, who was bitten on the proximal phalanx of her right little finger and presented with severe throbbing pain and progressive swelling. She was treated symptomatically and was discharged after 24 hours observation in the medical ward. However, she noted moderate neck and generalized joints pains especially affecting the hips and knees, one day prior to discharge. She was treated with oral analgesia and symptoms resolved within two days

Culture Cult: Ritual Circulation of Inalienable Objects and Appropriation of Cultural Knowledge (Northwest and Central Australia)

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Reflexiones sobre el destino de algunas ideas geomorfológicas

[Abstract] In geomorphology, as in other sciences, investigation is concerned with the collection and characterisation of data, and the generation and testing of working hypotheses. Considering the analysis of landforms and landscapes, the reasons some explanations have been accepted, others rejected, and yet others refuted but later approved, are examined. In particular, why hypotheses which were considered plausible but were shown to be flawed still received general acclaim, whereas others of obvious merit were ignored, are discussed. The roles of chance and the human factor are also broached

Intestinal microbiology shapes population health impacts of diet and lifestyle risk exposures in torres strait islander communities

Poor diet and lifestyle exposures are implicated in substantial global increases in non-communicable disease burden in low-income, remote, and Indigenous communities. This observational study investigated the contribution of the fecal microbiome to influence host physiology in two Indigenous communities in the Torres Strait Islands: Mer, a remote island where a traditional diet predominates, and Waiben a more accessible island with greater access to takeaway food and alcohol. Counterintuitively, disease markers were more pronounced in Mer residents. However, island-specific differences in disease risk were explained, in part, by microbiome traits. The absence of Alistipes onderdonkii, for example, significantly (p=0.014) moderated island-specific patterns of systolic blood pressure in multivariate-adjusted models. We also report mediatory relationships between traits of the fecal metagenome, disease markers, and risk exposures. Understanding how intestinal microbiome traits influence response to disease risk exposures is critical for the development of strategies that mitigate the growing burden of cardiometabolic disease in these communities

Social Capital and the Use of Traditional Birth Attendant: is IT Relevant?

Using the services of traditional birth attendants (TBA) in childbirth is considered as one of the maternal mortality determinants in Indonesia. Researchers reported that mothers preferred to have the help of TBAs in childbirth because TBAs have such powers as prayers and mantras that help the delivery process. However, very little is actually known about the factors shaping their preference. This research investigates the role of social capital as to maternal preference for having TBAs in childbirth. A cross sectional data of Indonesia Family Life Survey (IFLS) 2007 was used. Social capital was measured by social cohesion and community trust. Maternal demographic factors were measured by marital status, employment status, and education. Chi-Square test was used to analyze statistical association. Finally, logistic regression was used to gaugetheir effects on the use of TBAs. The result showed that the existence of social cohesion and trust made a significant impact on the preference for choosing TBAs. In demographic factors, a comparable finding was found only at the educational level. The factors of having childbirth with the help of a traditional birth attendant are complex. An understanding of social context should be taken into consideration in making a serious effort to reduce the maternal mortality rate

CANGAROO-III observation of TeV gamma rays from the unidentified gamma-ray source HESS J1614-518

We report the detection, with the CANGAROO-III imaging atmospheric Cherenkov telescope array, of a very high energy gamma-ray signal from the unidentified gamma-ray source HESS J1614-518, which was discovered in the H.E.S.S. Galactic plane survey. Diffuse gamma-ray emission was detected above 760 GeV at the 8.9 sigma level during an effective exposure of 54 hr from 2008 May to August. The spectrum can be represented by a power-law: 8.2+-2.2_{stat}+-2.5_{sys}x10^{-12}x (E/1TeV)^{-Gamma} cm^{-2} s^{-1} TeV^{-1} with a photon index Gamma of 2.4+-0.3_{stat}+-0.2_{sys}, which is compatible with that of the H.E.S.S. observations. By combining our result with multi-wavelength data, we discuss the possible counterparts for HESS J1614-518 and consider radiation mechanisms based on hadronic and leptonic processes for a supernova remnant, stellar winds from massive stars, and a pulsar wind nebula. Although a leptonic origin from a pulsar wind nebula driven by an unknown pulsar remains possible, hadronic-origin emission from an unknown supernova remnant is preferred.Comment: 9 pages, 7 figures, accepted for publication in Ap

Utilizing Urban Living Laboratories for Social Innovation

Cities have long been recognized as potential hubs of knowledge, social and cultural diversity, jobs, education, public services, and infrastructure. Alongside these opportunities, however, cities also face a changing climate, reduced availability of raw materials and natural resources, and dwindling physical space for the built environment. These challenges are accompanied by increasing disparities in income and resultant social inequalities; mounting threats to human health, well-being, and food security; growing refugee and migration influxes; and demographic changes. These concerns and associated governance challenges increase the urgency for new socially, ecologically, and culturally sensitive approaches to urban development. Such approaches need not only to reduce human vulnerability and environmental footprints, but also to build social cohesion and support ecological sustainability, cultural integration, and the establishment of a shared identity between citizens within a just system of distribution and access to urban resources and wealth