The Melting ‘Crown of the Continent’: Visual History of Glacier National Park

Glacier National Park (GNP), located in northwest Montana, US, was signed into existence on 11 May 1910 by then President William Howard Taft. Conservationist George Bird Grinnell was instrumental in lobbying for the park’s creation and negotiated the sale with the Blackfeet Indians. As an editor of the outdoor magazine Field and Stream, Grinnell learned about the region from writer James Willard Schultz and made his first visit there in 1885. Enticed and amazed by the glaciers of the area, the high Rocky Mountain alpine terrain, and the flora and fauna that thrived here, Grinnell advocated for the creation of the park, nicknaming it the “Crown of the Continent.” Grinnell recognized glaciers as a geological wonder. As historian Gerald Diettert records in his 1992 book, Grinnell called the glaciers the “jewels” in the crown. Setting aside land to enjoy the glaciers seemed like a logical means to conserve the landscapes and ecosystems that they supported. Yet today, just about a hundred years from when the park was founded, the glaciers that form GNP’s snow-capped crown are close to extinction. [excerpt

OPTIMISME DAN HARDINESS PADA DOKTER MUDA YANG SEDANG MELAKSANAKAN CO-AS DI RUMAH SAKIT UMUM DAERAH ZAINOEL ABIDIN (RSUDZA) BANDA ACEH

ABSTRAKMahasiswa kedokteran memiliki dua tahap pendidikan yaitu sebagai mahasiswa di universitas dan dokter muda di rumah sakit. Beratnya tugas dokter muda sangat menuntut keyakinan dan ketangguhan pribadi agar mampu menghadapi berbagai tantangan ketika menjalani co-as. Penelitian ini bertujuan untuk meneliti hubungan antara optimisme dengan hardiness pada Dokter Muda yang sedang melaksanakan Co-As di RSUDZA Banda Aceh. Teknik pengambilan sampel yang digunakan dalam penelitian ini adalah proportionate stratified random sampling. Berdasarkan tabel Isaac & Michael sampel penelitian ini berjumlah 198 Dokter Muda yang terdiri dari angkatan 2014 dan 2015. Alat ukur yang digunakan dalam penelitian ini terdiri atas dua skala psikologi, yaitu skala optimisme dan skala hardiness. Hasil analisis data menggunakan teknik korelasi Spearman menunjukkan koefisien korelasi (r) sebesar 0,664 dengan nilai p = 0,000 (p < 0,05). Hipotesis yang diajukan diterima sehingga dapat disimpulkan bahwa terdapat hubungan positif dan signifikan antara optimisme dan hardiness pada Dokter Muda yang sedang melaksanakan Co-As di RSUDZA Banda Aceh.Kata Kunci: Optimisme, Hardiness, Dokter Muda, Co-A

Remineralization ability of two hydraulic calcium-silicate based dental pulp capping materials : cell-independent model

This study aimed to evaluate remineralizing ability of two hydraulic calcium-silicate cements (Biodentine and TheraCal LC). Artificial carious lesions were introduced into the pulpal floors (1-1.5 mm) and axial walls of occlusal prepared cavity halves through pH cycling. Cycling was made through demineralizing solution (pH 3), for 8 hours and remineralizing solution (pH 7) for 16 hours. The total period of pH cycling was 14 days. Prepared cavities with the tested materials seated directly on the pulpal floor and in contact with the axial walls were stored in phosphate buffer solutions (PBS) (pH 7.2?7.4). The changes in the weight percentages (wt%) of calcium (Ca) and phosphorus (P) were detected using SEM and energy dispersive X-ray spectroscopy with reference to sound dentin after three intervals (one week, 3 and 6 months). Data were statistically analyzed using two-way ANOVA and Tukey?s post hoc test. Demineralized dentin, next to Biodentine, showed statistically higher intensities of Ca and P wt% after the three periods of incubation (p< 0.05). Surface mapping of both tested cements and their adjacent demineralized dentin showed increase in overall distribution of previous ions. SEM of subsurface layer under both materials showed filling of most intra-tubular areas with rod-like mineralized structure without significant difference. Biodentine has a higher ability to enrich the artificial carious dentin with significantly higher mineral contents available for remineralization. Both pulp-capping materials have significantly induced remineralization of demineralized dentin beneath them after total period of incubation

Optical Properties for SeTe Thin Films

Chalcogenide glasses SeTe have been prepared from the high purity constituent elements .Thin films of SeTe compound have been deposited by thermal evaporation onto glass substrates for different values of film thickness . The effect of varying thickness on the value of the optical gap is reported . The resultant films were in amorphous nature . The transmittance spectra was measured for that films in the wavelength range (400-1100) nm . The energy gap for such films was determined

The Effect of Political Advertising on Perceived Bias and Credibility of Online News Stories

This study was an investigation of the effect of political advertising on readers’ perceived bias and credibility of an online news article based on participants’ political leanings. Media priming and the hostile media effect were the theoretical underpinnings. Participants were asked to read an unbiased news article placed alongside 3 advertisements. Participants were put into 1 of 3 conditions — right-leaning advertisements, left-leaning advertisements, or neutral advertisements. They then answered questions about the perceived bias and credibility of the article and their own political affiliation. The researchers hypothesized that left-leaning individuals would perceive the article with right-leaning advertisements as biased and less credible and the opposite would be true of right-leaning individuals. Results were not consistent with hypotheses but trended in the expected directions

ADOPTION OF KOHA OPEN SOURCE INTEGRATED LIBRARY MANAGEMENT SYSTEM: A REVIEW OF LITERATURE

Most of the libraries and library professionals have a positive perception towards adoption of Koha. Koha also has Web 2.0facilities like tagging, comment, social sharing and RSS feeds.Koha software is gaining popularity because of its web based architecture, Unicode compatibility, user friendliness and extensive customization possibilities. This situation demands the need for workshops, seminars and technical supports to library professionals for successful implementation of Koha. This article provided a strong theoretical base for the present study

ADOPTION OF KOHA OPEN SOURCE INTEGRATED LIBRARY MANAGEMENT SYSTEM: A REVIEW OF LITERATURE

Most of the libraries and library professionals have a positive perception towards adoption of Koha. Koha also has Web 2.0facilities like tagging, comment, social sharing and RSS feeds.Koha software is gaining popularity because of its web based architecture, Unicode compatibility, user friendliness and extensive customization possibilities. This situation demands the need for workshops, seminars and technical supports to library professionals for successful implementation of Koha. This article provided a strong theoretical base for the present study

Depression in migrant workers and nationals of Qatar: An exploratory cross-cultural study

Background: The aim of this study was to compare the prevalence of depressive symptoms among migrants and non-migrants living in Qatar and identify variables associated with depressive symptomology in these groups, including culture of origin, time living in country and perceived quality of life. In addition, we tested if the latter two variables moderated the effect of culture of origin on depressive symptomology in the migrant groups. Subject and Methods: A telephone survey of a probability-based sample of 2,520 participants was conducted in February 2016. The sample was divided into three groups based on nationality and income: labour migrants (LMs), white-collar migrants (WCMs) and non-migrants or Qatari nationals (QNs). Participants completed the Whooley two-question test for depression. Results: The odds of depression were significantly increased in LMs (OR = 3.31, 95% CI = 2.36–4.65) and WCMs (OR = 1.40, 95% CI = 1.04–1.90) compared with non-migrants. Among LMs, having a problem with current employer in the last 3 months was also associated with depressive symptoms (OR = 2.10, 95% CI = 1.14–3.84). Culture of origin was significantly associated with depressive symptoms including South Asians (OR = 3.12, p < .001), East Asians (OR = 0.52, p = .013) and Westerners (OR = 0.45, p = .044) relative to Arabs. LM status remained strongly associated with depressive symptoms independent of culture of origin (OR = 2.02, p < .001). Conclusion: Perceived quality of life, but not length of stay, appears to be an important variable in explaining differences in symptoms between some cultural groups. Findings from this study highlight the importance of the context of migration and culture of origin as potential determinants of depressive symptomology in the host country