scholarly journals Development of an Automatic Robotic Procedure for Machining of Skull Prosthesis

Robotics ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 108
Author(s):  
Kevin Castelli ◽  
Marco Carnevale ◽  
Hermes Giberti
Keyword(s):  
Raw Material ◽  
Hospital Environment ◽  
Second Step ◽  
Prosthetic Device ◽  
Tumor Removal ◽  
Prosthetic Devices ◽  
Milling Operation ◽  
Actual Geometry ◽  
Geometrical Uncertainty ◽  
The Way

The project presented in this paper develops within the field of automation in the medical-surgical sector. It aims at automating the process for the realization of prosthetic devices for the skull in cranioplasty, following a craniotomy intervention for brain tumor removal. The paper puts emphasis on the possibility to create the prosthetic device in run-time during the surgery, in order to ease the work that surgeons have to do during the operation. Generally, a skull prosthesis is realized before the day of the intervention, based on the plan of the medical operation, on the results of computed tomography, and through image processing software. However, after the surgery is performed, a non-negligible geometrical uncertainty can be found between the part of the skull actually removed and the cut planned during the preliminary analysis, so that the realized prosthesis (or even the skull, at worse) may need to be retouched. This paper demonstrates the possibility to introduce a fully automated process in a hospital environment, to manufacture in runtime the prosthetic operculum, relying on the actual geometry of the incision of the skull detected during the intervention. By processing a 3D scan of the skull after the craniectomy, a digital model of the prosthesis can be created and then used as an input to generate the code to be run by a robotic system in charge of the workpiece machining. Focusing on this second step, i.e., the manufacturing process, the work describes the way the dimensions of the raw material block are automatically selected, and the way robot trajectories for milling operation are automatically generated. Experimental validation demonstrates the possibility to complete the prosthesis within the surgery time, thus increasing the accuracy of the produced prosthesis and consequently reducing the time needed to complete the operation.

Life as a Raw Material: Illusions of Control

Somatechnics ◽  
2012 ◽  
Vol 2 (2) ◽  
pp. 250-262 ◽  
Author(s):  
Oron Catts ◽  
Ionat Zurr
Keyword(s):  
Synthetic Biology ◽  
Cognitive Engineering ◽  
Raw Material ◽  
Future Scenarios ◽  
Short History ◽  
Know How ◽  
Political Forces ◽  
History Of ◽  
The Way

The paper discusses and critiques the concept of the single engineering paradigm. This concepts allude to a future in which the control of matter and life, and life as matter, will be achieved by applying engineering principles; through nanotechnology, synthetic biology and, as some suggest, geo-engineering, cognitive engineering and neuro-engineering. We outline some issues in the short history of the field labelled as Synthetic Biology. Furthermore; we examine the way engineers, scientists, designers and artists are positioned and articulating the use of the tools of Synthetic Biology to expose some of the philosophical, ethical and political forces and considerations of today as well as some future scenarios. We suggest that one way to enable the possibilities of alternative frames of thought is to open up the know-how and the access to these technologies to other disciplines, including artistic.

Conclusion

2018 ◽  
Author(s):  
Jürgen Schaflechner
Keyword(s):  
Second Step ◽  
Identity Change ◽  
Religious Minority ◽  
Important Place ◽  
The Way

The conclusion harmonizes the overarching themes of the book, providing a final look at the dramatic relationship between identity, change, and solidification for Pakistan’s largest religious minority at its most important place of worship today. The conclusion first sketches the site’s and the residing Devi’s history as well as the pilgrimage’s ancient origin. In a second step, the author summarizes how recent infrastructural and organizational developments caused the ritual journey to undergo significant changes resulting in novel practices performed on the way to and at the shrine. Finally he sums up how these alterations lead to a solidification of the Hinglaj tradition, which is directed toward establishing some kind of unity among the various narratives and practices occurring in the valley.

Marl Clay Pottery Fabrics of the New Kingdom from Memphis, Saqqara and Amarna

1992 ◽  
Vol 78 (1) ◽  
pp. 29-91 ◽  
Author(s):  
J. D. Bourriau ◽  
P. T. Nicholson
Keyword(s):  
Ancient Egypt ◽  
Research Tool ◽  
Raw Material ◽  
Nile Valley ◽  
New Kingdom ◽  
Commodity Exchange ◽  
Thin Sections ◽  
Vienna System ◽  
The Way

This paper attempts to introduce a research tool essential for the study of production and trade and the way they were organized in ancient Egypt by examining marl clay pottery fabrics from the New Kingdom. Marl clay was the preferred raw material for the containers used in the transport of food within the Nile Valley and beyond. Sample sherds from Memphis, Saqqara and Amarna are described and illustrated macroscopically (20 × magnification) and microscopically (from thin sections). The results are used to create a concordance between the fabric classifications used at these sites, and with that used at Qantir and with the Vienna System. The data given will allow other archaeologists to link their own material to that described and so have access to the evidence this pottery provides on chronology and commodity exchange.

scholarly journals Assessment of the Physicochemical and Thermal Characterization of Biofield Energy Treated Polylactic-co-glycolic acid (PLGA)

2019 ◽  
Vol 3 (1) ◽  
pp. 1-6
Author(s):  
Alice Branton ◽  
Mahendra Kumar Trivedi ◽  
Dahryn Trivedi ◽  
Gopal Nayak ◽  
Snehasis Jana
Keyword(s):  
Glycolic Acid ◽  
Control Sample ◽  
Analytical Techniques ◽  
Thermal Characterization ◽  
Pharmaceutical Formulations ◽  
Plga Nanoparticles ◽  
Raw Material ◽  
Prosthetic Devices ◽  
Degradation Temperature ◽  
Energy Healing

Polylactic-co-glycolic acid (PLGA) is a biodegradable copolymer. It has many applications in the pharmaceuticals and biomedical industries, but its degradation and stability is a major concern. The objective of this study was to evaluate the influence of the Trivedi Effect® on the physicochemical and thermal properties of PLGA using modern analytical techniques. The PLGA sample was divided into control and Biofield Energy Treated parts. The control sample did not obtain the Biofield Energy Treatment, whereas the treated PLGA was received the Trivedi Effect®-Consciousness Energy Healing Treatment remotely by a renowned Biofield Energy Healer, Alice Branton. The particle size values of the treated PLGA were increased by 8.97%(d10), 8.79%(d50), 4.72%(d90), and 6.61%{D(4,3)}; thus, the surface area of treated PLGA was significantly decreased by 6.84% compared with the control sample. The latent heat of evaporation and fusion of the treated PLGA were significantly increased by 29.60% and 230.93%, respectively compared with the control sample. The residue amount was significantly increased by 21.99% in the treated PLGA compared to the control sample. The maximum thermal degradation temperature of the treated PLGA was increased by 2.30% compared with the control sample. It was concluded that the Trivedi Effect®-Consciousness Energy Healing Treatment might have generated a new form of PLGA which may show better powder flow ability, thermal stability, and minimize the hydrolysis of the ester linkages of PLGA. This improved quality of PLGA would be a better choice for the pharmaceutical formulations (i.e., the drug like simvastatin, amoxicillin, and minocycline loaded PLGA nanoparticles) and manufacturing of biomedical devices, i.e., grafts, sutures, implants, surgical sealant films, prosthetic devices, etc., in the industry using it as a raw material.

Improving the Supply Chain (SC) Stream with Green Product Design (GPD) Strategy

2016 ◽  
pp. 36-60
Author(s):  
Rodrigo Villanueva ◽  
Emilio Jimenez-Macias ◽  
Julio Blanco-Fernandez
Keyword(s):  
Supply Chain ◽  
Product Design ◽  
End Of Life ◽  
Product Life Cycle ◽  
Material Selection ◽  
Raw Material ◽  
Green Product ◽  
Material Transportation ◽  
Green Product Design ◽  
The Way

The current Supply Chain (SC) is under change. The traditional way to generate a product contained the following stages: product design, raw material selection, material transportation, manufacturability, distribution and disposition at end of life. Product design for instance, is considered an extremely important stage of a product, being that, it directs the way the product can potentially be managed along the SC. It defines the raw material to be used, the possible supplier to select, the industrial processes involved in its fabrication, the packaging for its transportation and the newest stage where the product reaches its end of life and needs to be disposed. The Product design then becomes Green Product Design (GPD), where energy, time, resources become critical for a company. GPD takes into account the whole product life cycle. This chapter presents the importance of having a GPD process into the SC, the way to incorporate it, and the benefits of implementing it into the SC.

scholarly journals The research on the sifting from processing of East Donbass refuse heap for manufacturing wall ceramics goods

2018 ◽  
Vol 196 ◽  
pp. 04055 ◽  
Author(s):  
Khungianos Yavruyan ◽  
Evgeny Gaishun ◽  
Yuliya Teryokhina ◽  
Vladimir Kotlyar
Keyword(s):  
Temperature Variation ◽  
Firing Temperature ◽  
Elevated Pressure ◽  
Compression Molding ◽  
Raw Material ◽  
Compression Pressure ◽  
Grain Composition ◽  
Methods Of Evaluation ◽  
Wide Range ◽  
The Way

The results of the research into sifting of eastern Donbass gob pile processing as raw material for manufacturing wall ceramics, that is popular industrial raw material of the region, are highlighted in the report. It is stated that the main sifting components are siltstones, clay slates, claystone, and sandstones. The main minerals of the sifting are feldspar, crystalline silica, mica, and hydromica. The haracteristic of sifting handling ability for which the most suitable is the way of goods compression molding at elevated pressure and reduced humidity is given. It is stated that the main technology factors are grain composition of raw material mass, its humidity, compression pressure and firing temperature. Variation of technology factors' data makes it possible to get different kinds of products (course, lining, arch brick) with a wide range of features. Methods of evaluation of quality merit rating and the way this rating affects properties of final product are offered. There is high economical perspective of sifting implementation for production of wall ceramics.

Wireless Nerve Positional Control of Prosthetic Device

2011 ◽  
Author(s):  
David R. Loker ◽  
Yi Wu ◽  
Margaret A. Voss ◽  
John T. Roth ◽  
Stephen A. Strom
Keyword(s):  
Feasibility Study ◽  
Servo Motor ◽  
Prosthetic Device ◽  
Prosthetic Devices ◽  
Wireless Receiver ◽  
Pulse Width Modulated ◽  
Nerve Signal ◽  
Emg Control ◽  
Wireless Transmitter ◽  
Positional Control

Artificial limb control is an active area of research, and the control of prosthetic devices using electromyographic (EMG) interfaces is well established. The authors have previously performed a feasibility study which demonstrated that wireless nerve control of a prosthetic device is possible. This is critical for injuries that result in the loss of muscle which prevent EMG control. The purpose of this study is to extend the authors’ current research by providing enhancements to the system designed in the feasibility study. The objective of this current study is to take simulated nerve signals and transform them into corresponding positional motion control realized by a servo motor. The system designed has four functioning blocks: artificial nerve signal generation, wireless transmitter, wireless receiver, and servo motor. The artificial nerve generator used a PIC microcontroller to simulate and apply the signals directly to the wireless transmitter. A one-byte message, that indicated when the appropriate signal characteristics were met, was wirelessly transmitted. After receiving the message, the wireless receiver sent a corresponding pulse-width modulated (PWM) signal to the servo motor for positional control. Various input signal combinations were used to test the system.

scholarly journals the child and the p4c curriculum

2020 ◽  
Vol 16 (36) ◽  
pp. 01-26 ◽  
Author(s):  
Stefano Oliverio
Keyword(s):  
Second Step ◽  
Philosophy For Children ◽  
Matthew Lipman ◽  
The Way

In this paper I take my cue from what I suggest calling “the Adamitic modernity.” By this phrase I endeavor to capture a specific ‘removal’ of childhood that occurs in the Cartesian gesture of the enthroning of Reason. By drawing upon a reading of the major philosophical works of Descartes, I will argue that one of the main thrusts of his conceptual device is a deep-seated, and even anguished, mistrust of childhood and its errors. To put it in a nutshell: in the Cartesian modernity philosophy/science and childhood are at odds with each other. In the second step of my argumentation, I will show in what sense Dewey rehabilitates childhood and its form of experience by, thus, healing the rift between childhood and science (as his notions of inquiry and qualitative thought prove). This notwithstanding, Dewey was not ready to take the decisive step of thinking of a philosophy for children. Precisely by activating and developing the significance of qualitative thought, Matthew Lipman was able, instead, to progress beyond Dewey. In this perspective, I will show how Lipman and Ann Sharp, while walking in Dewey’s footsteps as far as their non-Cartesian interpretation of childhood is concerned, part company with him in their educational take on philosophy and on how this results in a revamping of the way of construing the Deweyan relationship between the child and the curriculum.

Differential Raw Material Use in the Middle Pleistocene of Spain: Evidence from Sierra de Atapuerca, Torralba, Ambrona and Aridos

1998 ◽  
Vol 8 (1) ◽  
pp. 15-28 ◽  
Author(s):  
Marina Mosquera Martinez
Keyword(s):  
Cognitive Ability ◽  
Raw Materials ◽  
Raw Material ◽  
Middle Pleistocene ◽  
Economic Perspective ◽  
Lithic Assemblages ◽  
Material Procurement ◽  
Surrounding Landscape ◽  
The Way

This article reviews the evidence for planning behaviour in Middle Pleistocene hominids. It documents the way in which raw material procurement and tool production were structured during the Middle Pleistocene occupations of the Spanish sites of Sierra de Atapuerca, Torralba, Ambrona and Aridos. Differences in the use of raw materials for different kinds of tool or end-product allow inferences to be drawn about pre-Neanderthal intentionality and cognitive ability. The overall pattern of technological behaviour demonstrated by this study is far removed from the purely ‘opportunistic’ and can reasonably be described as involving both forethought and planning. The work is presented from a techno-economic perspective based on the differential use of raw material types present in the lithic assemblages of these sites, and the proximity of sources of these raw materials in the surrounding landscape.

Systems in Prosthetic Hands and the Relationship With Their Performance

2013 ◽  
Author(s):  
Julio C. Díaz-Montes ◽  
Jesús Manuel Dorador-González
Keyword(s):  
Upper Limb ◽  
State Of The Art ◽  
The State ◽  
Prosthetic Devices ◽  
Prosthetic Hands ◽  
Upper Limb Prosthesis ◽  
The Relationship ◽  
Limb Prosthesis ◽  
The Way

A review of the state of the art in prosthetic hands is presented; this review covers the most common commercial prosthesis and prototypes under development. In this analysis, prosthetic devices were divided in six systems: actuation, reduction, blocking, transmission, flexion and support. The information obtained is presented according to those systems. The most important features of each system are presented together with their relationship with the performance of the entire prosthesis. An analysis that indicates the way in which prosthesis take advantage of the capabilities of current technologies is presented. Recommendations for improving the performance of upper limb prosthesis are proposed.

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