74 research outputs found
Implementation of Sequential Search Method on Android-based Jakabaring Dictionary
Get PDFLanguage becomes a medium of socializing between individuals with one another, one group with another group, and society one with other communities. However, society with one another does not necessarily have the same language. Therefore it takes a tool or media to communicate between tribes or communities, such as translators or dictionaries. Dictionary applications based on android more desirable users than web-based dictionaries. That\u27s because the android-based dictionary is easier to operate and faster operation, without having to open the web and look up the address of the dictionary. In the process of searching the meaning of vocabulary there are several data search methods. One of them Sequential Search Method or called a search streak that can be used to perform data search, both on the array that has been sequenced or not sorted. Keywords: Dictionary, Jakabaring, Android, Sequential Search, and SQLite
Effect of nonmetallic and intermetallic inclusions on crater formation on the surface of TiNi alloys under the electron-beam impact
No full textAbstractThe regularities of surface cratering in commercial and precision TiNi alloys irradiated with a low-energy, high-current electron beam (LEHCEB) in dependence on non-metallic (TiC(O)) or intermetallic (Ti2Ni) inclusions presented in TiNi matrix are studied. The melting threshold of TiNi alloy was found to be achieved in the range of LEHCEBs energy density Es corresponding to 1.3-1.5 J/cm2. The dominant role of non-metallic inclusions [mainly, TiC(O)] in the nucleation of microcraters was found. The processes initiated by pulsed heating/melting near the inclusion/matrix interface were analyzed. It is proposed that the most important factor enabling the liquid-phase dissolution of inclusions and delivery of impurities of C and O [from TiC(O)] and O (from Ti4Ni2Ox) into TiNi melt are eutectic reactions taking place in the Ti-Ni-C and Ti-Ni-O systems near Ti50Ni50 composition
pengaruh tepung kedelai hitam dan tepung ketela ungu terhadap kadar malondialdehyde (mda) hepar tikus model diabetes mellitus tipe 2
No full textABSTRAK Suhartini. 2017. Pengaruh Tepung Kedelai Hitam dan Tepung Ketela Ungu Terhadap Kadar MDA Hepar Tikus Jantan (Rattus Novergicus) Model Diabetes Mellitus Tipe 2. Skripsi, Jurusan Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Malang. Pembimbing: (I) Dr. Sri Rahayu Lestari, M.Si, (II) Nuning Wulandari, S.Si., M.Si. Kata Kunci: diabetes mellitus tipe 2, malondiadehyde (MDA), tepung kedelai hitam, tepung ketela unguPenyakit diabetes mellitus dibedakan menjadi 2, yaitu diabetes mellitus tipe 1 (DMT1) dan diabetes mellitus tipe 2 (DMT2). DMT2 ditandai dengan adanya resistensi insulin, gangguan sekresi insulin atau keduanya sehingga menyebabkan kadar glukosa darah tinggi (hiperglikemia). Hiperglikemia dapat menyebabkan radikal bebas melalui peningkatan tiga mekanisme hiperglikemia yaitu melalui jalur poliol, pembentukan advanced glycation end product (AGEs), dan Protein kinase C (PKC). Radikal bebas yang terbentuk akibat hiperglikemia akan berikatan dengan poly unsaturated fatty acid (PUFA) sehingga penyebabkan peroksidasi lipid yang akan menghasilkan produk berupa malondiadehyde (MDA). Peroksidasi lipid dapat dikurangi dengan mengkonsumsi makanan yang mengandung antioksidan. Antioksidan yang terdapat pada makanan antara lain isoflavon dan antosianin didapatkan dari kedelai hitam dan ketela ungu. Penelitian ini bertujuan mengetahui pengaruh tepung kedelai hitam dan tepung ketela ungu terhadap kadar MDA hepar tikus jantan (Rattus novergicus) DMT2. Penelitian dilakukan di Laboratorium Biologi Sub Laboratorium Fisiologi Hewan Universitas Negeri Malang dan Sub Laboratorium Faal Fakultas Kedokteran Universitas Brawijaya Malang pada bulan September 2016 – Januari 2017. Hewan coba yang digunakan adalah 32 tikus jantan galur wistar berumur 8 minggu dengan berat 180 ± 5 g yang dibuat DMT2 dengan pemberian pakan tinggi kalori dan injeksi STZ low multiple dose (30 mg/kgBB). Tikus DMT2 ditandai dengan kadar gula darah > 200 mg/dl. Tikus dibagi secara acak kedalam 8 perlakuan ( normal, kontrol negatif, kontrol positif, pemberian tepung ketela ungu, pemberian tepung kedelai hitam, pemberian tepung ketela ungu dan tepung kedelai hitam berturut-turut dengan perbandingan 1 : 3, 1 : 1 dan 3 : 1. Pada minggu ke 4 perlakuan, tikus dibedah dan diambil organ hepar untuk dilakukan pengujian kadar MDA dengan metode thiobarbituric acid (TBA). Data kadar MDA dianalisis menggunakan Kruskal Wallis. Hasil penelitian menunjukkan ada pengaruh pemberian tepung kedelai hitam dan tepung ketela ungu terhadap kadar MDA hepar tikus DMT2 tetapi tidak berbeda nyata. Pemberian tepung kedelai hitam dan tepung ketela ungu perbandingan 1 : 1 memiliki kemampuan optimum dalam menurunkan kadar MDA hepar DMT2
Tumors of the Optic Nerve and Its Sheath
No full textThe tumors of the optic nerve may arise from the nerve itself or from its sheath. Benign gliomas and meningiomas are the most frequent types, whereas other histological types are exceptional. Benign tumors cause slowly progressive visual loss and variable proptosis. The radiological diagnosis is rather easy for gliomas and meningiomas. The observation is justified in patients with preserved or stable vision. The surgery is often delayed because of the significant risk of visual worsening. Pediatric benign gliomas often respond to chemotherapy. Patients with optic nerve sheath meningiomas may be treated by stereotactic radiosurgery. However, the visual prognosis is more often poor. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023
Dimensional stability of coarse-grained and submicrocrystalline TiNi shape memory alloy for medical use under quasistatic and cyclic bending
No full textAbstractThe paper reports on a comparative study of inelastic strain accumulation in coarse-grained and submicrocrystalline titanium nickelide (TiNi) under quasistatic and cyclic loads. It is shown that the formation of submicrocrystalline structure in TiNi by equal channel angular pressing provides a steep increase in its strain resistance under quasistatic and cyclic loads. The contribution of dislocation and martensitic mechanisms to residual strain accumulation under different loading conditions is analyzed
Hydrogen-induced failure of TiNi based alloy with coarse-grained and ultrafine-grained structure
No full textAbstractThe objective of this work is to investigate the effect of hydrogen-induced fracture of TiNi-based alloy. In this report we performed the first studies comparing inelastic properties and fracture of the specimens of the binary alloy of TiNi wire under the action of hydrogen with coarse-grained (CG) and ultrafine-grained (UFG) microstructure. It is shown that hydrogen embrittlement (HE) occurs irrespective of the grain size in the studied specimens at approximately equal strain values. However, compared to the specimens with CG structure, those with UFG structure accumulate two to three times more hydrogen for the same hydrogenation time. It is found that hydrogen has a much smaller effect on the inelastic properties of specimens with UFG structure as compared to those with CG structure
Introduction of antibacterial function into biomedical TiNi shape memory alloy by the addition of element Ag
No full textA new kind of biomedical shape memory TiNiAg alloy with antibacterial function was successfully developed in the present study by the introduction of pure Ag precipitates into the TiNi matrix phase. The microstructure, mechanical property, corrosion resistance, ion release behavior in simulated body fluid, cytotoxicity and antibacterial properties were systematically investigated. The typical microstructural feature of TiNiAg alloy at room temperature was tiny pure Ag particles (at submicrometer or micrometer scales with irregular shape) randomly distributed in the TiNi matrix phase. The presence of Ag precipitates was found to result in a slightly higher tensile strength and larger elongation of TiNiAg alloy in comparison with that of TiNi binary alloy. Furthermore, a maximum shape recovery strain of similar to 6.4% was obtained with a total prestrain of 7% in the TiNiAg alloy. In electrochemical and immersion tests, TiNiAg alloy presented good corrosion resistance in simulated body fluid, comparable with that of CP Ti and TiNi alloy. The cytotoxicity evaluation revealed that TiNiAg alloy extract induced slight toxicity to cells, but the viability of experimental cells was similar to or higher than that of TiNi alloy extract. In vitro bacterial adhesion study indicated a significantly reduced number of bacteria (S. aureus, S. epidermidis and P. gingivalis) on the TiNiAg alloy plate surface when compared with that on TiNi alloy plate surface, and the corresponding antibacterial mechanism for the TiNiAg alloy is discussed. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000291181800045&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Engineering, BiomedicalMaterials Science, BiomaterialsSCI(E)41ARTICLE62758-2767
Fabrication of TiNi shape memory alloy microactuators by ion beam sputter deposition
No full textTiNi shape memory alloy has been recently investigated for use in microactuators because of the high power to volume ratio. Conventional sputtering methods, such as RF and DC sputtering and magnetron sputtering, have previously been used by other workers in order to deposit TiNi thin films. As-deposited films produced by these methods are amorphous, and are then crystallised typically by annealing at 500 deg C for 1 hour in order to exhibit the shape memory effect. These deposition methods have invariably used alloyed targets to grow thin films. In this thesis, an Ion Beam Sputter Deposition (IBSD) method has been used by which argon ions are used to bombard non- alloyed targets. The thin films grown by this technique demonstrate the characteristics of the shape memory effect. Films have been characterised by electrical resistivity, resistance and thermal measurements, giving physical properties in excellent agreement with those quoted in the literature. Compositional and density measurements were done by X-ray reflectometry and were consistent with equi-atomic composition and nominal density for TiNi. In addition thermal modelling was used to investigate implications of heating and cooling rates for microactuator operation. Finally, a novel fabrication process is proposed, combining ion beam milling and Focused Ion Beam (FIB) trepanning for the process of microactuator production. (author)SIGLEAvailable from British Library Document Supply Centre-DSC:DXN043198 / BLDSC - British Library Document Supply CentreGBUnited Kingdo
High damping capacity in a wide temperature range of a compositionally graded TiNi alloy prepared by electroplating and diffusion annealing
No full textA compositionally graded TiNi alloy was prepared by electroplating of Ni coating on TiNi substrate and diffusion annealing. The temperature range with damping capacity of larger than 0.04 was enlarged to above 110 degrees C for the compositionally graded alloy, which was almost 5 times of that for the homogeneous alloy. (C) 2014 Elsevier B.V. All rights reserved.Nanoscience & NanotechnologyMaterials Science, MultidisciplinaryMetallurgy & Metallurgical EngineeringSCI(E)[email protected]
TiNi shape memory alloy coated with tungsten: A novel approach for biomedical applications
No full textThis study explores the use of DC magnetron sputtering tungsten thin films for surface modification of TiNi shape memory alloy (SMA) targeting for biomedical applications. SEM, AFM and automatic contact angle meter instrument were used to determine the surface characteristics of the tungsten thin films. The hardness of the TiNi SMA with and without tungsten thin films was measured by nanoindentation tests. It is demonstrated that the tungsten thin films deposited at different magnetron sputtering conditions are characterized by a columnar microstructure and exhibit different surface morphology and roughness. The hardness of the TiNi SMA was improved significantly by tungsten thin films. The ion release, hemolysis rate, cell adhesion and cell proliferation have been investigated by inductively coupled plasma atomic emission spectrometry, CCK-8 assay and alkaline phosphatase activity test. The experimental findings indicate that TiNi SMA coated with tungsten thin film shows a substantial reduction in the release of nickel. Therefore, it has a better in vitro biocompatibility, in particular, reduced hemolysis rate, enhanced cell adhesion and differentiation due to the hydrophilic properties of the tungsten films
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