Between 1898 and 1938, over 1,600 wax cylinders were recorded in what is today Papua New Guinea. Recordists came from the colonial powers (Germany, Britain, Australia) and beyond, with the cylinders themselves being deposited in archives in those countries, but also in Austria, Finland, Hungary, and France, often according to the nationality of the recordist. Recordists were ethnographers, missionaries, linguists, government officers, and other adventurers, many with an association with Erich von Hornbostel at the Berlin Phonogramm Archive.
Since the establishment of the Institute of Papua New Guinea Studies in 1974, staff have been trying to obtain copies of these cylinders for its Audiovisual Archive: it is strongly felt that such materials should be available in the country in which they have most meaning. And, where possible, attempts have been made to reconnect communities today with such early recordings made in their regions.
Locating and obtaining copies of cylinders has been greatly successful, so that copies of almost all these cylinder recordings are held in the IPNGS Audiovisual Archive. According to the project concerned and available funding, the reconnection work continues in a variety of ways, such as through published recordings or research focused on particular collections.
This presentation will consider this considerable history of wax-cylinder recording activity in Papua New Guinea, the various uses that have been made of such recordings internationally, reactions to hearing the cylinders locally, and possible future directions.
Biological membranes are essential components of all living organisms, forming cell boundaries and facilitating crucial processes like membrane fusion.[1] However, our understanding of fusion is limited due to the lack of effective control tools. DNA nanotechnology has emerged as a promising solution, offering precise control over membrane morphology and interaction dynamics. Through the fabrication of DNA nanotools, we aim to control membrane fusion and investigate the interaction between DNA-lipid hybrid nanostructures. A mechanical DNA nanostructure that transitions from an open to a closed state,[2] facilitating fusion initiation of attached membrane vesicles is exploited. Using ensemble methods and direct stochastic optical reconstruction microscopy (dSTORM), we observed that vesicles exhibit wobbling around the defined anchoring site of DNA nanostructures. To further understand these interactions in 3D, we introduced a T-shaped DNA nanoprobe (DNP), exploring parameters like the number and position of cholesterol anchors. Ensemble methods and dSTORM revealed that DNP with a single lipid anchor can discriminate between differently sized vesicles, potentially aiding in the identification of diagnostically relevant exosomes.[3] This research advances DNA nanotechnology, paving the way for improved tools for membrane fusion control and the design of nanodevices for vesicle-based research, biosensing, and diagnostics.
References
[1] L. V. Chernomordik et al. 2008. Mechanics of membrane fusion. Nat. Struct. Mol. Biol.15, 675-683.
[2] F. N. Gür et al. 2021. Double- to single-strand transition induces forces and motion in DNA origami nanostructures. Adv. Mater. 33:2101986.
[3] H. Zhang et al. 2018. Identification of distinct nanoparticles and subsets of extracellular vesicles by asymmetric flow field-flow fractionation. Nat. Cell Biol. 20, 332-343.
A large body of research demonstrates that human faces attract attention. This is also true in video, with eye-tracking studies showing that fixations are clustered on the people in the scene. I will review a number of studies from psychology investigating where observers look when watching people in video, and how this is related to their understanding and judgements of the scene.
For example, participants are quite consistent in their judgements of people having a conversation, even from a brief video clip (“thin-slicing”). We have shown that when watching such clips the individuals who receive the most attention are those who are rated as the most dominant or prestigious in the group. This is one case where participants must make a decision about who to fixate at each point in time, and this appears to vary due to both the behaviour of the actor and the characteristics of the observer. In crowd scenes featuring multiple people, certain targets get fixated more often than others and this is affected by age and attractiveness.
When observing pre-recorded conversation, participants spend most of the time fixating the person speaking, but they can also anticipate the change in speaker. This may be partly due to reading the cues provided by interacting participants (such as their gaze). We can manipulate these cues to study signalling in a naturalistic setting, and we have also shown nuanced differences in observers high in autistic and ADHD-related traits. Importantly, we also find a close correspondence between fixations on pre-recorded videos and the gaze displayed by participants in a real face-to-face interaction, which suggests a high level of ecological validity.
Taken together, these studies show “social attention” operating in complex and dynamic situations. This involves not just looking at other people, but selecting specific individuals, and specific behavioural cues, in order to interpret the scene.
Among the phonograph cylinders held at the Budapest Museum of Ethnography are over 3,000 with Bartók’s field recordings made before the outbreak of WW1 in the Romanian-speaking territories of what was then Hungary. The Bucharest Institute of Ethnography and Folklore has more than 10,000 further cylinders with field and studio recordings made in the 1930s in Romania by Constantin Brăiloiu and his collaborators. For Bartók the cylinders were, at the time, a means to an end: the detailed notation and classification of folk music in pursuance of his growing interest in ‘comparative musical folklore’. For Brăiloiu the chief interest lay in his conviction that oral traditions are underpinned by system no less than those of notated classical music. Today the two collections present us with an incomparably rich repository for further research, not least in understanding the psychology of how lyrical verses are stored in and retrieved from memory in notationless cultures. This is a topic that has resonance in medieval songs whose notation is similarly is a matter of record rather than prescription. The most teasing aspect of such songs has long been considered to lie in their rhythms. Unsurprisingly, perhaps, since it was not until the mid-thirteenth century that the utterly novel idea was rehearsed that certain kinds of music are precisely measurable. Surprising as it may seem, the cylinder recordings, taken in conjunction with Bartók’s writings on ‘parlando-rubato’ rhythm and Brăiloiu’s on ‘syllabic giusto’, have much to tell us about singing ‘beyond measure’ in medieval times.
Eduard Jedlička immigrated to the New York from Bohemia under the Austro-Hungarian Empire in 1895. In addition to having a career as a jeweler, Jedlička recorded all manner of Czech songs and poetry on his own label, Jedličkovy České Rekordy. Jedlička’s cylinders are some of the first recordings made for a specific ethnic group in the United States. This presentation will trace the history of Jedlička’s life, his business, and the recent discovery of original Ed. Jedlička cylinders. The National Museum, Czech Republic has worked to identify, describe, transcribe, and translate these cylinders in collaboration with the University of Iowa’s Rita Benton Music Library. These unusual specimens of early recording document Czech culture in the United States, which this paper will explore through the songs, performers, and producers of the content.
Engineering biological devices that can emulate capabilities of living cells from molecular building blocks is a longstanding goal of synthetic biology. In recent years great progress has been made in recapitulating sophisticated cytosolic processes from purified components, such as the ability to regulate protein synthesis. In contrast, artificial cell membranes lag behind in their capabilities due to a poor understanding of how to engineer membrane complexity, for example, by introducing functional membrane proteins. Among the many outstanding challenges, one is the lack of precision techniques to systematically explore the multidimensional spaces of membrane composition parameters like lipid content. In consequence, relationships between critical membrane processes, e.g. protein binding and inserting, and lipid composition are poorly characterized. To alleviate this need, we present the development of suite of microfluidic tools to build, manipulate artificial cells with different membrane composition and quantify their biophysical properties at the single artificial cell level. Advances in our microfluidic tool-kit includes devices for on-the-fly variation of artificial cell lipid composition and multiplexed perfusion over immobilized artificial cell populations. Furthermore, we add to our compositional probes by developing a DNA based optical sensor for assaying membrane surface charge.
Today, community outreach and engagement are essential aspects of the institutional policies of museums and archives holding wax cylinder recordings in the UK and the Western world, and the recirculation of such collections among cultural heritage communities in countries of origin is an established method of applied ethnomusicological research (Gunderson, Lancefield, and Woods 2018). Sound exhibitions offer a way of engaging communities with historical recording collections in such places, yet limited technical resources and poor infrastructure often hamper these efforts. Between January and March 2022, I conducted a research project funded by the International Association of Sound and Audiovisual Archives on the cylinder recordings of the British administrator-anthropologist John Henry Hutton (1885–1968), which are held by the Pitt Rivers Museum in Oxford. Further project partners included the Archives and Research Center for Ethnomusicology (India) and the Highland Institute, an independent research institute in Kohima, the state capital of Nagaland. The project concluded with a well-received sound exhibition at the Highland Institute. In this presentation, I discuss how we organized the exhibition in collaboration with Naga visual artists, musicians, and academics, manufacturing sound boards with the help of local artisans, importing technical equipment from the UK, designing standees and posters, arranging performances, and conducting workshops with pupils and students from surrounding schools and colleges. In this way, my presentation offers insight into how to organize an exhibition with cylinder recordings in a region where there are no exhibition design companies and professional technical support is hard to come by.
The study was designed to determine the ameliorative potential of quercetin and catechin against the toxicity induced by co-exposure to Mancozeb (MZ) and arsenic in Wistar rats. Sixty-adult male Wistar rats were randomly divided into 10 groups (n=6). Group I served as control and group II was exposed to MZ [800 mg/kg, PO (per OS)]. Groups III, IV, and V were given drinking water containing sodium arsenite at the rate of 10, 50, and 100 ppb, respectively, for 28 days. Groups VI, VII, and VIII were treated with sodium arsenite in drinking water at 10, 50, and 100 ppb, respectively, along with MZ (800 mg/kg) for 28 days. Groups IX and X were given drinking water mixed with sodium arsenite at 100 ppb, MZ at 800 mg/kg, and quercetin (50 mg/kg) and catechin (50 mg/ kg), respectively. Co-exposure to the toxicants (MZ and arsenic) significantly (P<0.05) aggravated the oxidative stress-induced alterations and the histopathological changes induced by individual toxicants. Supplementation of quercetin or catechin markedly attenuated the variations in nitric oxide levels and oxidative biomarkers in blood and the brain and shielded the histomorphology of the brain against oxidative damage.
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