Nanoporous PMMA: A novel system with different acoustic properties

The acoustic properties of closed cell nanoporous and microporous poly(methyl methacrylate) (PMMA) foams have been well characterized, showing that nanoporous PMMA exhibit a different absorption coefficient and transmission loss behavior in comparison with microporous PMMA. Experimental differences may be explained by the different wave propagation mechanism in the micro and nanoscale, which is determined by the confinement of both the gas (Knudsen regime) and the solid phases. These results place nanoporous materials as a new class of polymeric porous material with potential properties in the field of acoustics, especially in multifunctional systems requiring a certain degree of soundproofing

Developing Extensive Reading Material For Semester 2 Students Of YOGYAKARTA University Of Technology

This research study was aimed at developing extensive reading material for semester 2 students of Yogyakarta University of Technology. This research was a Research and Development study that included the steps of needs analysis, course grid design, product development, product validation, product revision, try-out, and study of the final product. This research developed ten units of extensive reading material. The extensive reading material was developed according to the needs analysis data.  The need of semester 2 students of Yogyakarta University of Technology is to improve their reading skills. The appropriate extensive reading material are describe the language skills clearly, look nice, give a lot practice, give feedback and let the learners know how to complete the tasks, give examples and tell the learners how to learn best. The needs-related appropriate extensive reading material in terms of their components are: the goal of learning reading is to improve the students' reading skills; the input presents interesting pictures and vocabulary list; the procedure presents interesting and enjoyable activities; the learners' role is as the active reader; the teacher's role is the feedback giver; and the setting is individual work. The needs-related arrangement of the components of appropriate extensive reading material in terms of their organisations are arranged into three stages, namely: introduction, exercises, and evaluatio

Exploration of Cow Bone as a Material for Necklace Accessories

Excessive consumption due to population density causes the amount of waste to increase, for example, the city of Bandung. Bandung is a tourist city that provides a lot of typical ole and typical food too. Like beat noodles. Mie kocok is a food made from noodles and uses beef broth. Beef broth is obtained using decoction of beef bone as the main ingredient. Mi shake results in cow bone waste. The beef bone that becomes this waste is quite disturbing. In this report the use of cow bone waste is the main material for making accessories products. To get a good result of processed beef bone material, several studies were carried out, such as conducting observations, case studies, and interviews with business owners of cow bone craftsmanship. The method used for processing was obtained from several experiments. Processed cow bone material that is clean and odorless which can be made as the main ingredient in making accessories. Keywords waste, ox bone, material, accessorie

Material Constitution

An annotated bibliography of important works on material constitution

Case and event structure

I argue in this paper for a novel analysis of case in Icelandic, with implications for case theory in general. I argue that structural case is the manifestation on the noun phrase of features which are semantically interpretable only on verbal projections; thus, Icelandic case does not encode features of noun phrase interpretation, but it is not uninterpretable either; case is properly seen as reflecting (interpretable) tense and aspect features. Accusative case in Icelandic is available when the two subevents introduced in a transitive verb phrase are identified with each other, and dative case is available when the two parts are distinct (thus Icelandic case manifests aktionsart or inner aspect, in partial contrast to Finnish). This analysis bears directly on the theory of feature checking in the Minimalist Program; specifically, it paves the way for a restrictive theory of feature checking in which no features are strictly uninterpretable: all formal features come in interpretable-uninterpretable pairs, and feature checking is the matching of such pairs, driven by legibility conditions at Spell-Out

Bearing material

A composite material is described which will provide low friction surfaces for materials in rolling or sliding contact and is self-lubricating and oxidation resistant up to and in excess of about 930 C. The composite is comprised of a metal component which lends strength and elasticity to the structure, a fluoride salt component which provides lubrication and, lastly, a glass component which not only provides oxidation protection to the metal but may also enhance the lubrication qualities of the composite

Material and methods

This chapter introduces the cases and the disciplinary approaches and methods. The BERAS study had a case study approach, and this report presents the interdisciplinary synthesis of the multidisciplinary study. Ultimately, the BERAS study attempted to clarify the potential impacts of enhanced localisation and recycling rather than to compare the average status of the present local, organic food systems and organic farms with the dominant food systems and agriculture