One-pot synthesis and characterization of soluble poly(aryl ether-ketone)s having pendant carboxyl groups

Aromatic poly(ether-ketone)s having pendant carboxyl groups have been obtained by direct, one-pot, Friedel-Crafts copolycondensation of 4,4'-diphenoxybenzophenone with a mixture of terephthaloyl chloride (TC) and trimellitic anhydride acid chloride (TAAC), over a wide range of TAAC/TC molar ratios, in the presence of anhydrous aluminum chloride. The syntheses were performed as precipitation-polycondensations, and the polymers were obtained in particulate form. Besides globular particles of polymer, small quantities of elongated, needlelike particles were observed when the mole ratio TAAC/TC was less than 1. Use of X-ray microdiffraction with synchrotron radiation has revealed that the needlelike material consists of a cyclic compound containing 10 phenylene units, i.e., the crystals are of a [2 + 2] macrocyclic dimer. The polymers obtained are soluble in strong acids and in mixtures of methanesulfonic acid or trifluoroacetic acid with chlorinated hydrocarbons. The molecular structures of the polymers were confirmed by H-1 and C-13 NMR spectroscopy. Reaction of TAAC with 4,4'-diphenoxybenzophenone produced mainly meta-orientation of the resulting ketone linkages. The size of the polymer particles, their molecular weights, and the melting behavior of the products obtained depend on the TAAC/TC ratio used. Ortho-keto acid residues, formed during reaction of anhydride groups of TAAC with 4,4'-diphenoxybenzophenone, exhibit ring-chain tautomerism. A carboxyl-containing aromatic polyketone derived from p-terphenyl, and thus having with no ether linkages in the main chain, was prepared by analogous chemistry, and functional derivatives of carboxy-substituted polyketones were also obtained and characterized.

Landscape of intelligent cores: An autonomic multi-agent approach for space application

Space applications are challenged by the reliability of parallel computing systems (FPGAs) employed in space crafts due to Single-Event Upsets. The work reported in this paper aims to achieve self-managing systems which are reliable for space applications by applying autonomic computing constructs to parallel computing systems. A novel technique, 'Swarm-Array Computing' inspired by swarm robotics, and built on the foundations of autonomic and parallel computing is proposed as a path to achieve autonomy. The constitution of swarm-array computing comprising for constituents, namely the computing system, the problem / task, the swarm and the landscape is considered. Three approaches that bind these constituents together are proposed. The feasibility of one among the three proposed approaches is validated on the SeSAm multi-agent simulator and landscapes representing the computing space and problem are generated using the MATLAB.

Gulliver, medium, technique

In the four Parts of Gulliver’s Travels the narrator attends closely to the manual skills, crafts and techniques of the different countries visited and to the materials and instruments by which they are mediated. The patterned, motif-like presentation of these observations and their rich contextual background, historical and literary, indicate their special significance. These references to technique play an important, previously underappreciated roll in Gulliver. They form a thematic connection between its embodied, sensual, compulsive descriptions of the world and its socio-political satire, the latter focusing on technocratic, professionalized statecraft. They are crucial to the peculiar fullness with which Swift’s writing imagines different communities of practice, different ecologies of mind.

Piano Performance at the New York Trade School

A piano player is shown performing at the New York Trade School. He is likely playing on a piano tuned or built by students in the Piano Crafts Department at the school. Black and white photograph.

Plumbing Department

Students in the Plumbing Department at the New York Trade School are shown working on bathroom equipment in a plumbing classroom. Black and white photograph with some damage to the edges.

Synthesis and polymerisation of α,ω-bis(3-pyrrolyl)alkanes

The synthesis, characterisation and polymerisation studies of a homologous series of α,ω-bis(pyrrolyl)alkanes are described. These α,ω-bis(pyrrolyl)alkanes were produced using Friedel–Crafts acylation followed by reduction of the carbonyl group using Red-Al®. Chemical polymerisation of the resultant dimers using FeCl₃ produced poly(α,ω-bis(pyrrolyl)alkane) films, which were characterised by SEM, FTIR and tested for conductivity.

The haystack that got away

The National Library and the National Folk Festival have joined forces to foster a tradition-bearers oral history project aimed at recording the practical skills and knowledge of those engaged in traditional Australian crafts.

"Our fingers were never idle" : women and domestic craft in the Geelong region, 1900-1960

This thesis is an exploration of women's domestic crafts in the Geelong region, between 1900 and I960, Through analysing oral testimony and the women's handicraft artefacts, the nature of the domestic production of handicrafts and the meanings the makers have constructed around their creations and their lives is illuminated. The thesis is organised around the themes of work, space, the construction of femininity, memory, time and meaning. The thesis argues that until recently, the discipline of history has privileged the experiences of men over those of women. It challenges the trivialising of women’s handicrafts. It also argues that within the restrictive social structures around them and within the confined nature of their situations, the women of my study asserted themselves to transform their environments and to improve their situations through labour in the home. In ‘making do’, recycling materials and creating functional and decorative needlework items for their homes and families, the women were often finding solutions to pressing practical and economic problems. Doing handicrafts was rarely just a passive way of filling in time. Rather, making and creating was for these women a multi-layered activity that similtaneously fulfilled a complex range of needs for themselves and their families. A multiplicity of deeply personal, aesthetic, familial, social, practical and economic needs were met in the making of domestic craft artefacts, whose symbolism reflected the values and meanings of the women's cultures, homes and families.

Creative pedagogies : "art-full" reading and writing

This paper reports on a small-scale research inquiry, designed to support teachers in a Melbourne primary school to bring together the arts, reading and writing in their classrooms in ways that create possibilities for "art-full" teaching and learning. The principal, concerned by underperformance on State literacy tests of the school’s largely working-class and NESB population, requested David Hornsby and other members of the project team from the Education Faculty at La Trobe University to offer whole-school professional development. The focus was on developing oral language as a foundation for literacy learning, enacting Britton’s claim that “reading and writing float on a sea of talk”. The project team introduced the teachers to a range of innovative classroom practices for using visual and performance arts, literature, music and crafts. Drawing on video, interviews and writing samples, a number of teachers worked collaboratively with the research team to develop case studies of individual students with a range of literacy aptitudes and social skills. A key research question was: "What do children take from their engagement in arts-based activities into reading of literary texts, and potentially into writing from the perspective of another character?" In this paper we ponder this from three vantage points: by outlining the informing principles in our research project; confirming insights from current interdisciplinary work about children learning to see, do, act and say in play; and analysing the research data from the initial phase.

Synthesis and characterization of soluble conducting polymers

Although conducting polymers have various potential applications, lack of solubility is an impediment in their direct application to material surfaces. Synthesis of alkyl pyrrole monomers and subsequent polymerization into soluble conducting polymers are aimed as alternatives to conventional methods of application of conducting polymers on substrates. Alkyl chains are attached to a pyrrole ring to produce solubility in the resulting conducting polypyrroles, which allow direct application of conductive polymer emulsions to any desired surface. Friedel-Crafts acylation of the tosyl-protected pyrrole provides high yields of the 3-acylated product. The conductivity values of poly-3- and 3, 4-substituted pyrroles are generally less than the unmodified polypyrrole. Increasingly bulkier groups attached to the pyrrole means lower conductivity of the resultant polymer. As the carbon chain length attached to the 3-position of pyrrole increases, the solubility also increases. However, the magnitude of change in conductivity of films and pellets of soluble conducting polypyrroles over the alkyl range is not significant.

Using GIS Network Analyst to Identify Suppliers for a Produce Co-op in Waterville, ME

The idea for organizing a cooperative market on Waterville Main Street was proposed by Aime Schwartz in the fall of 2008. The Co-op would entail an open market located on Main Street to provide fresh, local produce and crafts to town locals. Through shorter delivery distances and agreements with local farmers, the co-op theoretically will offer consumers lower prices on produce than can be found in conventional grocery stores, as well as an opportunity to support local agriculture. One of the tasks involved with organizing the Co-op is to source all of the produce from among the hundreds of farmers located in Maine. The purpose of this project is to show how Geographic Information System (GIS) tools can be used to help the Co-op and other businesses a) site nearby farms that carry desired produce and products, and b) determine which farms are closest to the business site. Using GIS for this purpose will make it easier and more efficient to source produce suppliers, and reduce the workload on business planners. GIS Network Analyst is a tool that provides network-based spatial analysis, and can be used in conjunction with traditional GIS technologies to determine not only the geometric distance between points, but also distance over existing networks (like roads). We used Network Analyst to find the closest produce suppliers to the Co-op for specific produce items, and compute how far they are over existing roads. This will enable business planners to source potential suppliers by distance before contacting individual farmers, allowing for more efficient use of their time and a faster planning process.

Building a Piano

Four students in the Piano Crafts Department at the New York Trade School are shown working on building a piano. Notice the aprons worn by the students are embroidered with the department name. Black and white photograph.

Group photo at a New York Trade School Commencement Ceremony

A group, possibly administrators, pictured at a New York Trade School commencement ceremony. Photograph is black and white and contains some writing in red ink on it.

Filming at the Lithographic Technical Forum

A presentation at the Lithographic Technical Forum is being filmed. Notice the RCA Victor Television camera being used. Black and white photograph.

American Indian Blankets

Raid the Icebox 1 with Andy Warhol exhibition installation negative of a blanket chest containing American Indian blankets. The top lid and front drawer are open.