346 research outputs found
Catholic Comments Podcast.
No full textAuthor Tim Rinaldi discusses his mission work in Honduras and how it changed his life and perspective
OPTIMASI DAN SIMULASI IMPLAN SAMBUNGAN TULANG LUTUT TITANIUM HIDROKSIAPATIT UNTUK APLIKASI BIOMEDIK
No full textRINGKASAN Rinaldi, B. 2018. Optimasi dan Simulasi Implan Sambungan Tulang Lutut Titanium Hidroksiapatit Untuk Aplikasi Biomedik. Skripsi, Jurusan Teknik Mesin, Fakultas Teknik, Universitas Negeri Malang. Pembimbing: (I) Dr. Andoko, S.T., M.T.(II) Avita Ayu Permanasari, S.T., M.T. Kata kunci: Implan, Titanium Hidroksiapatit, Equivalent Stress, Shear Stress, Total Deformation, RSM, Metode Elemen Hingga Implan merupakan suatu alat yang digunakan untuk menopang anggota tubuh maupun penyangga tulang yang patah. Scaffold, plate, bone screw, dan beberapa alat lain dapat digunakan secara kombinasi menjadi penopang dan pengisi sambungan antara tulang yang patah sebelum jaringannya mengalami pertumbuhan. Sifat biokompatibel dari sebuah material menjadi pertimbangan yang penting pada proses perencanaan sebuah alat kesehatan. Penelitian ini bermaksud untuk mengetahui ketahanan material titanium hidroksiapatit sebagai bahan implan, untuk pengembangan dan terobosan dalam dunia medis. Metode penelitian ini menggunakan metode elemen hingga yaitu simulasi pada software Ansys 18.1 dan optimasi menggunakan software Minitab. Implan diberikan perlakuan sintering dengan 3 variasi temperatur (9000C, 11000C, 13000C), selanjutnya implan didesain dan diberikan pembebanan dengan 3 variasi (700N, 750 N, 800 N). Hasil simulasi dari implan titanium hidroksiapatit kemudian dibandingkan dengan implan pada penelitian sebelumnya yaitu titanium, duralium dan ZnO-Al2O3. Berdasarkan hasil simulasi bahan titanium hidroksiapatit memiliki tegangan tekan sebesar 1,521 MPa dibandingkan dengan implan titanium yang memiliki tegangan tekan tertinggi dari bahan material implan pada penelitian sebelumnya sebesar 0,15 MPa. Perbandingan yang sama juga dilakukan pada tegangan geser sebesar 0,12982 MPa lebih tinggi dari implan titanium sebesar 0,0043581 MPa. Hasil deformasi dari titanium hidroksiapatit memiliki nilai 0,042 mm. Secara keseluruhan material implan titanium hidroksiapatit memiliki nilai yang lebih baik dibandingkan dengan material implan titanium. Nilai optimasi terbaik untuk pengujian implan titanium hidroksiapatit adalah pada pembebanan 750 N dan temperatur sintering 11000 C. SUMMARY Rinaldi, B. 2018. Optimization and Simulation of Implant Titanium Hydroxyapatite Knee Joints for Biomedical Applications. Thesis, Mechanical Engineering Department, Faculty of Engineering, Malang State University. Advisor: (I) Dr. Andoko, S.T., M.T. (II) Avita Ayu Permanasari, S.T., M.T. Keywords: Implants, Titanium Hydroxyapatite, Equivalent Stress, Shear Stress, Total Deformation, RSM, Finite Element Method Implants are a device used to support the limbs and fractured bones. Scaffold, plate, bone screw, and several other devices can be used in combination to support and fill the joint between broken bones before the tissue growth occurs. The biocompatible nature of a material is an important consideration in the design of a medical device. This study intends to determine the resistance of titanium hydroxyapatite material as implant material, for the development and breakthrough in the medical world. This method uses Finite Element Method and simulation on Ansys 18.1 software and optimization using Minitab software. Implants were firstly produced by sintering temperature using 3 different temperatures (9000 C, 11000 C and 13000 C). Afterwords the implant were designed and simulated using 3 different loading (700 N, 750 N and 800 N). The simulation results of titanium hidroksiapatit were then compared with previously studied titanium, duralium and ZnO-Al2O3 implants. Based on the simulation results the titanium hydroxyapatite material shown higher compressive stress of 1.521 MPa compared with the titanium implants which showing the highest compressive stress among other previously studied implants with 0,15 MPa. The similar comparison is also observed on the shear stress, with 0.12982 MPa, which is much higher than that of titanium implant (0.0043581 MPa). The deformation of titanium hydroxyapatite implant is determined to be 0.042 mm. The overall results of titanium hydroxyapatite implant material have a better value compared to titanium implant material indicating the higher material properties of titanium hidroksiapatit than the other. On the otherhand tbased on optimization by using minitab, the titanium hidroksiapatit implant shows the best performance at the loading 750 N and sintering temperature of 11000 C
Superamento degli ostacoli anatomici in chirurgia implantare, English.
No full text"Superamento degli ostacoli anatomici in chirurgia implantare by Rinaldi M, Mottloa A."--Title page verso.dental bookfair2016Includes bibliographical references and index.xiv, 552 pages
Experimental tests about the cooling/freezing of the molten salts in the receiver tubes of a solar power plant with parabolic trough
No full textIn 2003 ENEA realized the PCS experimental Facility at Casaccia Research Centre (Rome, Italy), in order to test in real operating conditions the components of a parabolic trough solar plant, and to evaluate the technical feasibility of using the solar molten salts mixture (60% NaNO3, 40% KNO3, melting point 220÷240°C) in such a type of plant. ENEA also had the need to assess the behaviour of the solar receiver tubes during abnormal operating situations (wrong operation, pump block, power failure, etc.), when a block of the circulation of the molten salts may occur and cause the cooling or, worse, the freezing of the salts mixture inside the pipes. Some experimental tests have been performed, aimed to examine what happens in such a cases. In fact, without quick maneuvers to restart the circulation of the molten salts or to readily empty the receiver tubes, the molten salts contained in them may cool down to temperatures near/below the solidification. In this report are shown the results of the experimental tests carried out on the receiver tubes of the PCS Facility by cooling the process fluid down to temperatures near or below its freezing point. The tests show that the solidification of the salts does not damage the components of the plant but it is manageable and reversible, provided you apply the correct procedures. © 2017 Author(s)
Ius soli: qualche precisazione di metodo in materia di diritti di cittadinanza e diritti della cittadinanza
No full textThe Author analyses, among many possible meanings of citizenship, two types which had a part in the process of modern State building: citizenship is sometimes a relationship between the individual and the sovereign, sometimes consciousness of a collective membership. Both meanings have a link with the sovereignty and the process of modern State building. After the “great Neutralisation” of the Nineteenth Century, some reflections are developed about the relationship between citizenship and sovereignty in the Twentieth Century. Finally, the Author emphasizes the necessity of a statute that sets the requirements needed to become a citizen in order to pacify the conflicts of multicultural societies
The Italian Supreme Court Joint Sections set forth the interpretative underpinnings of the "Gelli-Bianco" law: varying degrees of guilt aimed at limiting medical liability, article 2236 C.C. makes a comeback
Get PDFThe article’s author has sought to summarize the regulatory and legal evolution of accidental criminal liability of doctors starting from earliest positions up until the enactment of the Gelli-Bianco law. An in-depth analysis is laid out based on the Italian Supreme Court Joint Sections ruling n. 8770/2018 (so-called Mariotti decision). The author has also elaborated upon the notion of varying degrees of guilt, which was taken out of the law’s wording, to be later reintroduced as a concept by judicial interpretation. It is worth noting that Article 3 of the Balduzzi decree, article 590 sexies of the Italian Criminal Code and the reference to article 2236 of the Civil Code reflect an awareness on the part of legislators that medical liability needs to be limited. Clearly, the approach based on lawfulness alone, which protects from liability physicians that have adhered to guidelines, has been dismissed, superseded by the notion of minor fault. Nonetheless, the new legislation, in the author’s estimation, constitutes a standard particularly ill-suited to modern medical practice, which has a high degree of complexity. The author concludes that it might be worth considering a more balanced alternative: getting back to the notion of fault, considering minor fault relevant, rather than major fault
La corte costituzionale legittima le misure di contenimento del covid-19, ma la motivazione soddisfa solo in parte
No full textL’Autrice si sofferma sull'assimilabilità dei d.P.C.m. attuativi delle misure di contenimento e gestione dell’emergenza sanitaria da COVID-19 agli atti necessitati d’urgenza ed evidenzia il carattere solo in parte soddisfacente degli argomenti impiegati dalla Corte costituzionale per il rigetto delle questioni di legittimità costituzionale sollevate avverso i decreti-legge disciplinanti tali misure.The Author dwells on the comparability of the d.P.C.m. taken to implement the containment measures and to manage the COVID-19 health emergency to the urgent and needed acts. The Author also highlights the only partially satisfactory nature of the arguments set out in the judgment that rejected the issues of constitutionality raised against the decree-laws adopted in order to regulate such measures
Due interpreti dell'Etica di Spinoza: Harold H. Joachim e Karl Jaspers
No full textIn this book, the author takes into consideration two crucial episodes of the history of the interpretations of Spinoza’s philosophy: its critical appropriation by an eminent exponent of British Idealism, Harold H. Joachim, and the opposite existentialistic interpretation by Karl Jaspers, who instead sets out a decidedly irrationalistic interpretation of it. Starting with an immanent critique of Jaspers’ failed Spinoza-interpretation, this book ends with the outline of a systematic critique of Existential Ontology
L'etica dell'idealismo moderno
No full textThis book is a systematic work in which its author proposes to set out a complete treatment of the problematic of Moral Philosophy, and identifies in the development of modern thought from Spinoza to the most recent outcomes of Anglo-Saxon Idealism the historical framework in which its deepest and most consistent statements have been formulated. All the philosophical doctrines there expounded are submitted to an immanent theoretical critique from the viewpoint of Absolute Idealism
STORICISMO E METAFISICA NELLA FILOSOFIA CONTEMPORANEA
No full textIn this essay, the author proposes to articulate concisely a theoretically consistent solution to the much-discussed problem of the relationship between the metaphysical and historical dimensions of philosophical thought. He rejects both the anti-historical orientation of the traditional, dualistic “metaphysics of Being” and the prevailingly relativistic outlook of contemporary Historicism, and searches for a reconciliation of both dimensions within the theoretical framework of Absolute Idealism
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