Vortex-Bright Soliton Dipoles: Bifurcations, Symmetry Breaking and Soliton Tunneling in a Vortex-Induced Double Well

The emergence of vortex-bright soliton dipoles in two-component Bose-Einstein condensates through bifurcations from suitable eigenstates of the underlying linear system is examined. These dipoles can have their bright solitary structures be in phase (symmetric) or out of phase (anti-symmetric). The dynamical robustness of each of these two possibilities is considered and the out-of-phase case is found to exhibit an intriguing symmetry-breaking instability that can in turn lead to tunneling of the bright wavefunction between the two vortex "wells". We interpret this phenomenon by virtue of a vortex-induced double well system, whose spontaneous symmetry breaking leads to asymmetric vortex-bright dipoles, in addition to the symmetric and anti-symmetric ones. The theoretical prediction of these states is corroborated by detailed numerical computations.Comment: 14 pages, 8 figure

Dari Tari ke Musik: Pembentukan Musik Suita pada Era Musik Barok

Suite as a musical form was composed by many Baroque composers. It was built and based on dances which is popular in the Renaissance or Baroque eras. This paper tries to understand the way composers adapt one form of art to another form, that is from dance to music, which is widely known as ecranisation. To grasp it in depth, this paper firstly describes what dance musics consist in suite. Secondly, it describes the dances which form the dance music. To make it clear, it also describes the essence of dance that makes it possible the transformation from dance to music. The result shows that the transformation does happen because of the abstract essence in dance was transformed into notes in music. This process is revealed by using the method of phenomenology of Maurice Merleau- Ponty.Keywords: music, dance, suite, ecranisation, inspiration, transformation, movement, noteABSTRAKMusik suita yang banyak digubah pada era musik Barok dibangun dari sejumlah gerakan musik yang berasal-usul dari tari-tari yang populer di era Renaisans/ Barok. Tulisan ini berusaha memahami bagaimana komponis mengalihwahanakan seni yang ada: dari tari ke musik. Untuk memahami kejadian itu, penulis memaparkan gerakan musik apa saja yang terdapat di dalam suita, setelah itu dipaparkan tari-tari yang menjadi sumber inspirasi komponis. Setelah didapatkan gambaran lengkap mengenai musik dan tari yang relevan, perlulah dipahami apa yang terdapat di dalam tari sehingga bisa diserap oleh komponis untuk kemudian dikeluarkan kembali dalam bentuk musik. Dari paparan itu terlihatlah bahwa transformasi dari tari ke musik hanya mungkin karena adanya transformasi gagasan abstrak yang terdapat di dalam tari untuk kemudian diekspresikan dalam bentuk nada-nada, dan hal itu semua hanya bisa dipahami dengan menggunakan metode fenomenologi dari Maurice Merleau-Ponty

Aplikasi Rangkaian Pengali Tegangan Walton Cockcroft Dan Sensor Af-30 Pada Penjernih Udara Ruangan Otomatis

Air is very important for all the living being in this planet, therefore good quality of air has to be maintained. The air quality in our office environment is much decreasing nowadays, due to human behaviour and life style, such as smoking and in return reduces our health. This reasearch proposes to design an air purifer to increase air quality inside a room. The propose air purifier applies Walton Cockcroft voltage multiflier with voltage output 4000-5000 Vdc to separate carbonmonoxide (CO) from oxigen. This device will work as soon as smoke sensor AF-30 detects carbonmonoxide in the air. This carbonmonoxide detection will result analog signal as the input to the programmed microcontroller ATMega 8535. The output signal of microcontroller ATMega 8535 will activate relay switch circuit and in the end will activate DC Motor fan, voltage multiplier circuit and exhaust fan. The voltage multiplier circuit output is 4420 volt DC at the 13th stage, this high voltage will ionize carbonmonoxide (negatif ion) from oxigen (positif ion). After positif and negative ion get separated, negatif ion would be outed by DC fan to the purifier element, the negatif ion would be the residue and stayed inside the purifier. It is hoped that this device would help in increasing air quality in side office room

Editorial: Anticoagulation in cardiovascular diseases: evolving role, unmet needs, and grey areas

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Efficient bone formation by gene transfer of human LIM mineralization protein-3

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Characterization of the energy distribution of neutrons generated by 5 MeV protons on a thick beryllium target at different emission angles.

Neutron energy spectra at different emission angles, between 0° and 120° from the Be(p,xn) reaction generated by a beryllium thick-target bombarded with 5 MeV protons, have been measured at the Legnaro Laboratories (LNL) of the Italian National Institute for Nuclear Physics research (INFN). A new and quite compact recoil-proton spectrometer, based on a monolithic silicon telescope, coupled to a polyethylene converter, was efficiently used with respect to the traditional Time-of-Flight (TOF) technique. The measured distributions of recoil-protons were processed through an iterative unfolding algorithm in order to determine the neutron energy spectra at all the angles accounted for. The neutron energy spectrum measured at 0° resulted to be in good agreement with the only one so far available at the requested energy and measured years ago with TOF technique. Moreover, the results obtained at different emission angles resulted to be consistent with detailed past measurements performed at 4 MeV protons at the same angles by TOF techniques

Performance Assessment and Mathematical Modeling of Process Parameters in Electrical Discharge Machining of EN-31 Tool Steel Material Using Taguchi DOE

In non-traditional machining, electrical discharge machining (EDM) has tremendous potential on account of versatility of its applications and is successfully, commercially used in modern industries. EDM process is capable to machine geometrically complex, hard material components, tool steels, composites, super alloys, ceramics and carbides. In EDM, Material Removal Rate (MRR) and Tool wear rate (TWR) are generally analyzed to assess its performance. For this, a perfect combination of input variables is required. In the present study, machining is done on Tool steel workpiece material using a pure copper electrode. The input parameters like Pulse-ON time, Pulse- OFF time, Current and Gap voltage are selected for experimentation and Taguchi method is employed for the DOE by considering 4 factors and 3 levels. A total of 27 experiments (L27 orthogonal array) have been designed with a possible combination of selected input parameters. The present work mainly focuses on development of an extensive mathematical model for correlating the input and output variables using a conventional regression analysis. The adequacy of proposed model was tested with the help of some collected data through experimentation using taguchi optimized DOE. The proposed linear multi-variable regression equation was found to be a best fitted model with 98% confidence levels.In non-traditional machining, electrical discharge machining (EDM) has tremendous potential on account of versatility of its applications and is successfully, commercially used in modern industries. EDM process is capable to machine geometrically complex, hard material components, tool steels, composites, super alloys, ceramics and carbides. In EDM, Material Removal Rate (MRR) and Tool wear rate (TWR) are generally analyzed to assess its performance. For this, a perfect combination of input variables is required. In the present study, machining is done on Tool steel workpiece material using a pure copper electrode. The input parameters like Pulse-ON time, Pulse- OFF time, Current and Gap voltage are selected for experimentation and Taguchi method is employed for the DOE by considering 4 factors and 3 levels. A total of 27 experiments (L27 orthogonal array) have been designed with a possible combination of selected input parameters. The present work mainly focuses on development of an extensive mathematical model for correlating the input and output variables using a conventional regression analysis. The adequacy of proposed model was tested with the help of some collected data through experimentation using taguchi optimized DOE. The proposed linear multi-variable regression equation was found to be a best fitted model with 98% confidence levels

Pulsed Current Effect on the Hard Anodizing of an AlSi10Mg Aluminum Alloy Obtained via Additive Manufacturing

The hard anodizing treatments of cast Al-Si alloys are notoriously difficult. Indeed, their microstructural features hinder the growth of a uniform, compact, and defect-free anodic oxide. In this paper, AlSi10Mg samples, produced via Gravity Casting (GC) and Additive Manufacturing, i.e., Laser Powder Bed Fusion (L-PBF), were hard anodized in a sulfuric acid bath, in order to verify how the particular microstructure obtained via L-PBF affects the thickness, hardness, compactness, and defectiveness of the anodic oxide. Moreover, for the first time, Pulsed Direct Current (PDC) procedures were used to perform the hard anodizing treatments on additively manufactured AlSi10Mg alloy. Several combinations of temperature and electrical parameters, i.e., current density, frequency, and Duty Cycle, were tested. The anodized samples were characterized through optical microscopy analysis, Scanning Electron Microscopy (SEM) analysis, and accelerated corrosion tests, i.e., Potentiodynamic Polarization (POL) and Electrochemical Impedance Spectroscopy (EIS) measurements. The PDC procedures allowed improvement of the compromise between evenness, compactness, and defectiveness. Among the attempted PDC procedures, a specific combination of electrical parameters and temperature allowed the best results to be obtained, i.e., the highest hardness and the lowest volumetric expansion values without compromising the oxide quality rating and the corrosion resistance behavior. However, none of the attempted PCD strategies allowed the hardness values obtained on samples produced via GC to be reached