1948 ◽  
Vol 17 (8) ◽  
pp. 95-98
Author(s):  
Cyril Belshaw
Keyword(s):  

Author(s):  
J. B. Allen ◽  
T. Deans

SummaryA detrital assemblage of magnesian ilmenite, pyrope, chrome-diopside, rutile, and zircon has been traced to outcropping ultrabasic alkaline rocks, hitherto unknown in the Melanesian region. Analyses and descriptions of these ‘kimberlite indicator minerals’ are given. The host rocks comprise alnöite, an alnöite breccia with calcite matrix, and a magnesian ankaratrite, which are described, with chemical analyses. Emphasis is laid on the abundance of ultrabasic inclusions and xenocrysts and the replacements and transformations they have undergone. Malaita Island promises to contribute significantly to the understanding of the relations between alnöite, melilite basalts, and kimberlites.


2020 ◽  
Vol 32 (2) ◽  
pp. 595-605
Author(s):  
Joseph Daniel Foukona
Keyword(s):  

2021 ◽  
Vol 23 (4) ◽  
pp. 750-765
Author(s):  
Geoffrey Hobbis ◽  
Stephanie Ketterer Hobbis

This article demonstrates the fragility of digital storage through a non-media-centric ethnography of data management practices in the so-called Global South. It shows how in the Lau Lagoon, Malaita Province, Solomon Islands, the capacity to reliably store digital media is curtailed by limited access to means of capital production and civic infrastructures, as well as a comparatively isolated tropical ecology that bedevils the permanence of all things. The object biography of mobile phones, including MicroSD cards, typically short, fits into a broader historical pattern of everyday engagements with materializations of transience in the Lau Lagoon. Three types of visual media are exemplary in this regard: sand, ancestral material cultures and digital visual media (photographs and videos). Ultimately, Lau experiences of transience in their visual media are located in their visual technological history and the choices they make about which materials to maintain or dispose of.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Adam T. Craig ◽  
Nathan Kama ◽  
George Fafale ◽  
Hugo Bugoro

Abstract Background Recent arboviral disease outbreaks highlight the value a better understanding of the spread of disease-carrying mosquitoes across spatial-temporal scales can provide. Traditional surveillance tools are limited by jurisdictional boundaries, workforce constraints, logistics, and cost; factors that in low- and middle-income countries often conspire to undermine public health protection efforts. To overcome these, we undertake a pilot study designed to explore if citizen science provides a feasible strategy for arboviral vector surveillance in small developing Pacific island contexts. Methods We recruited, trained, and equipped community volunteers to trap and type mosquitos within their household settings, and to report count data to a central authority by short-message-service. Mosquito catches were independently assessed to measure participants’ mosquito identification accuracy. Other data were collected to measure the frequency and stability of reporting, and volunteers’ experiences. Results Participants collected data for 78.3% of the study period, and agreement between the volunteer citizen scientists’ and the reviewing entomologist’s mosquito identification was 94%. Opportunity to contribute to a project of social benefit, the chance to learn new skills, and the frequency of engagement with project staff were prime motivators for participation. Unstable electricity supply (required to run the trap’s fan), insufficient personal finances (to buy electricity and phone credit), and inconvenience were identified as barriers to sustained participation. Conclusions While there are challenges to address, our findings suggest that citizen science offers an opportunity to overcome the human resource constraints that conspire to limit health authorities’ capacity to monitor arboviral vectors across populations. We note that the success of citizen science-based surveillance is dependent on the appropriate selection of equipment and participants, and the quality of engagement and support provided.


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