Kawasan Agrowisata Jagung Di Limboto “Optimalisasi Sequence, Serial Vision, Serta Place and Content ”

Pariwisata menjadi salah satu sektor yang mendapat prioritas tinggi disetiap negara. Salah satu sektor pariwisata di Indonesia yang potensial untuk dikembangkan adalah agrowisata. Agrowisata merupakan salah satu bidang USAha pariwisata yang berlandaskan konsep pertanian, serta alam, dan budaya yang beragam. Provinsi Gorontalo merupakan salah satu provinsi yang ada di Indonesia yang memiliki keanekaragaman hayati. Tidak hanya itu, Provinsi Gorontalo juga merupakan daerah dengan penghasil varietas jagung terbaik sehingga menjadikan jagung itu sendiri sebagai komoditi utama di Provinsi Gorontalo. Limboto, merupakan salah satu kota yang ada di Kabupaten Gorontalo, Provinsi Gorontalo yang mengusung program pemerintah “Kota Layak Anak”. Kota Limboto sendiri mengalami perkembangan yang cukup pesat dalam sektor pembangunan dan pariwisata. Mengacu pada hal diatas maka munculah gagasan untuk menghadirkan kawasan wisata sebagai sarana rekreasi dan juga mendidik bagi para wisatawan, guna mendukung program pemerintah di Kota Limboto, serta balai riset jagung yang ada dalam kawasan agar dapat manghasilkan jagung-jagung dengan kualitas terbaik. Kawasan Agrowisata Jagung di Limboto mengambil tema “Optimalisasi Sequence, serial vision, serta place and content” yang mengoptimalkan rancangan ruang luar dan ruang dalam kawasan berdasarkan beberapa aspek yang telah ada sehingga tercipta sebuah kawasan agrowisata yang nyaman, aman, dan ramah lingkungan. Kata kunci : Kawasan Agrowisata, Limboto, Optimalisasi Sequence, serial vision, serta place and conten

The interaction between colloids in polar mixtures above Tc

We calculate the interaction potential between two colloids immersed in an aqueous mixture containing salt near or above the critical temperature. We find an attractive interaction far from the coexistence curve due to the combination of preferential solvent adsorption at the colloids' surface and preferential ion solvation. We show that the ion-specific interaction strongly depends on the amount of salt added as well as on the mixture composition. Our results are in accord with recent experiments. For a highly antagonistic salt of hydrophilic anions and hydrophobic cations, a repulsive interaction at an intermediate inter-colloid distance is predicted even though both the electrostatic and adsorption forces alone are attractive.Comment: 9 pages, 6 figure

Transport coefficients for an inelastic gas around uniform shear flow: Linear stability analysis

The inelastic Boltzmann equation for a granular gas is applied to spatially inhomogeneous states close to the uniform shear flow. A normal solution is obtained via a Chapman-Enskog-like expansion around a local shear flow distribution. The heat and momentum fluxes are determined to first order in the deviations of the hydrodynamic field gradients from their values in the reference state. The corresponding transport coefficients are determined from a set of coupled linear integral equations which are approximately solved by using a kinetic model of the Boltzmann equation. The main new ingredient in this expansion is that the reference state $f^{(0)}$ (zeroth-order approximation) retains all the hydrodynamic orders in the shear rate. In addition, since the collisional cooling cannot be compensated locally for viscous heating, the distribution $f^{(0)}$ depends on time through its dependence on temperature. This means that in general, for a given degree of inelasticity, the complete nonlinear dependence of the transport coefficients on the shear rate requires the analysis of the {\em unsteady} hydrodynamic behavior. To simplify the analysis, the steady state conditions have been considered here in order to perform a linear stability analysis of the hydrodynamic equations with respect to the uniform shear flow state. Conditions for instabilities at long wavelengths are identified and discussed.Comment: 7 figures; previous stability analysis modifie

Instability of the symmetric Couette-flow in a granular gas: hydrodynamic field profiles and transport

We investigate the inelastic hard disk gas sheared by two parallel bumpy walls (Couette-flow). In our molecular dynamic simulations we found a sensitivity to the asymmetries of the initial condition of the particle places and velocities and an asymmetric stationary state, where the deviation from (anti)symmetric hydrodynamic fields is stronger as the normal restitution coefficient decreases. For the better understanding of this sensitivity we carried out a linear stability analysis of the former kinetic theoretical solution [Jenkins and Richman: J. Fluid. Mech. {\bf 171} (1986)] and found it to be unstable. The effect of this asymmetry on the self-diffusion coefficient is also discussed.Comment: 9 pages RevTeX, 14 postscript figures, sent to Phys. Rev.

Pemanfaatan Bakteriofag untuk Pengembangan Kit Deteksi Bakteri Penyebab Hawar Bakteri pada Kedelai

Bacterial leaf blight disease is one of the important soybean disease caused by Pseudomonas syringae that causes about 20% of yield loss. Bacteriophages can be used for therapy to human, animal, and plant against some bacterial pathogens. Due to the specificity of the target bacteria, bacteriophages can be beneficial for detection of the target bacteria. This research was conducted to obtain the particles of bacteriophage, to study their hosts range against several bacterial strains and to formulate a detection kit of bacterial leaf blight. Isolation of bacteria and bacteriophage was obtained from the soybean field and formulation of bacteriophage for detection kit was done on Laboratory of Virology. The results showed that there were 11 isolates of Pseudomonas syringae, 3 particles of bacteriophage (φGH1, φGH2 and φGH3), and detector paper kit. The result also showed that the composition of the detector materials (Talk, CMC, pH indicators) affect the quality of the kit

Hydrodynamic Modes for Granular Gases

The eigenfunctions and eigenvalues of the linearized Boltzmann equation for inelastic hard spheres (d=3) or disks (d=2) corresponding to d+2 hydrodynamic modes, are calculated in the long wavelength limit for a granular gas. The transport coefficients are identified and found to agree with those from the Chapman-Enskog solution. The dominance of hydrodynamic modes at long times and long wavelengths is studied via an exactly solvable kinetic model. A collisional continuum is bounded away from the hydrodynamic spectrum, assuring a hydrodynamic description at long times. The bound is closely related to the power law decay of the velocity distribution in the reference homogeneous cooling state

Cooling dynamics of a dilute gas of inelastic rods: a many particle simulation

We present results of simulations for a dilute gas of inelastically colliding particles. Collisions are modelled as a stochastic process, which on average decreases the translational energy (cooling), but allows for fluctuations in the transfer of energy to internal vibrations. We show that these fluctuations are strong enough to suppress inelastic collapse. This allows us to study large systems for long times in the truely inelastic regime. During the cooling stage we observe complex cluster dynamics, as large clusters of particles form, collide and merge or dissolve. Typical clusters are found to survive long enough to establish local equilibrium within a cluster, but not among different clusters. We extend the model to include net dissipation of energy by damping of the internal vibrations. Inelatic collapse is avoided also in this case but in contrast to the conservative system the translational energy decays according to the mean field scaling law, E(t)\propto t^{-2}, for asymptotically long times.Comment: 10 pages, 12 figures, Latex; extended discussion, accepted for publication in Phys. Rev.

Universal motion of mirror-symmetric microparticles in confined Stokes flow

Comprehensive understanding of particle motion in microfluidic devices is essential to unlock novel technologies for shape-based separation and sorting of microparticles like microplastics, cells and crystal polymorphs. Such particles interact hydrodynamically with confining surfaces, thus altering their trajectories. These hydrodynamic interactions are shape-dependent and can be tuned to guide a particle along a specific path. We produce strongly confined particles with various shapes in a shallow microfluidic channel via stop flow lithography. Regardless of their exact shape, particles with a single mirror plane have identical modes of motion: in-plane rotation and cross-stream translation along a bell-shaped path. Each mode has a characteristic time, determined by particle geometry. Furthermore, each particle trajectory can be scaled by its respective characteristic times onto two master curves. We propose minimalistic relations linking these timescales to particle shape. Together these master curves yield a trajectory universal to particles with a single mirror plane.Comment: 10 pages, 4 figures, 1 table, 1 PDF file containing Supplementary Text, Figures and Tabl

Sand as Maxwell's demon

We consider a dilute gas of granular material inside a box, kept in a stationary state by shaking. A wall separates the box into two identical compartments, save for a small hole at some finite height $h$. As the gas is cooled, a second order phase transition occurs, in which the particles preferentially occupy one side of the box. We develop a quantitative theory of this clustering phenomenon and find good agreement with numerical simulations

Isolation and Characterization of C-C Chemokine Ligand 7 (CCL7) in Cynomolgus Macaques

Cynomolgus macaques (Macaca fascicularis) are an established animal model of asthma, which exhibit different responses to allergen exposure that are clinically relevant. The chemokine ligand gene (CCL7) encodes Monocyte Chemotactic Protein-3, which has an important role in asthma pathogenesis. While CCL7 polymorphism in humans is associated with asthma phenotype, very little is known about CCL7 in nonhuman primate models of respiratory disease. The objective of this study was to isolate and characterize CCL7 gene in cynomolgus macaques of Indonesian origin. In this study, we used sequencing and bioinformatics technique for gene isolation, characterization, and protein 3D structure prediction. We isolated a 2253 base-pair (bp) sequence of CCL7 in cynomolgus macaques, which exhibited 95% similarity in coding sequence to human CCL7. The amino acid sequence was more closely clustered with human CCL7 than with that of rodents. Importantly, the predictive protein structure of CCL7 was similar to that in humans. These similarities in CCL7 suggests the potential of cynomolgus macaque as a translational model to study asthma, particularly in the context of genetics and role of chemokines such as CCL7