Supersolids in confined fermions on one-dimensional optical lattices

Using quantum Monte Carlo simulations, we show that density-density and pairing correlation functions of the one-dimensional attractive fermionic Hubbard model in a harmonic confinement potential are characterized by the anomalous dimension $K_\rho$ of a corresponding periodic system, and hence display quantum critical behavior. The corresponding fluctuations render the SU(2) symmetry breaking by the confining potential irrelevant, leading to structure form factors for both correlation functions that scale with the same exponent upon increasing the system size, thus giving rise to a (quasi)supersolid.Comment: 4 pages, 5 figures, published versio

Pengaruh Perbedaan Bahan Baku Terhadap Kandungan Asam Glutamat Pada Terasi

Terasi merupakan salah satu produk perikanan yang pembuatannya dilakukan dengan proses fermentasi. Terasi umumnya berbahan dasar utama udang kecil yang sering disebut juga dengan udang rebon. Selain udang rebon, bahan baku dalam pembuatan terasi berasal dari ikan. Terasi berbahan baku udang rebon ataupun ikan memiliki potensi sebagai bahan pengganti penyedap rasa gurih “umami” karena adanya kandungan asam glutamat yang dihasilkan. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan bahan baku yang berbeda terhadap kandungan asam glutamat dan kualitas terasi. Materi penelitian berupa terasi dari ikan teri segar, ikan petek segar dan udang rebon segar. Rancangan percobaan yang digunakan dalam penelitian adalah Rancangan Acak Kelompok dengan 3 perlakuan yaitu perbedaan bahan baku terasi (teri, petek dan udang rebon) dan 3 ulangan. Analisa pengujian mutu meliputi organoleptik, asam glutamat, protein, air, TPC, Aw, garam dan pH. Data dianalisis menggunakan ANOVA dan perbedaan diantara perlakuan diuji dengan Uji Beda Nyata Jujur. Hasil penelitian menunjukkan bahwa perbedaan bahan baku memberikan perberbedaan nyata (p<0,05) terhadap nilai kadar protein, asam glutamat, kadar air, TPC, Aw dan pH. Perbedan bahan baku tidak memberikan perbedaan nyata (p>0,05) terhadap nilai kadar garam. Penggunaan bahan baku udang rebon menghasilkan produk terasi dengan nilai asam glutamat tertinggi (12,56%). Nilai organoleptik spesifikasi kenampakan, bau dan rasa menunjukkan perbedaan yang nyata (p<0,005), sedangkan tekstur dan jamur tidak memberikan perbedaan yang nyata (p>0,05). Kadar air dan pH terendah terdapat pada terasi dengan bahan baku rebon (Kadar air = 40,05%, pH = 6,28), sedangkan pada uji TPC dan Aw nilai terendah terdapat pada bahan baku Teri (TPC = 3,98×102, Aw = 0,82). Berdasarkan perlakuan penggunaan bahan baku rebon memiliki kualitas terbaik diantara ketiga perlakuan dengan rata-rata nilai nilai organoleptik sebesar 7,87 ≤ µ ≤ 8,06, asam glutamat (12,56%), kadar protein (35,10%), kadar air (40,05%), TPC (1,74×103), Aw (0,84), kadar garam (0,64%) dan pH (6,28). Fish paste is a fisheries product that made by fermentation process. Fish paste usually made from planktonic shrimp or in Indonesian often known as “rebon”. Fish paste can be made from planktonic shrimp or fish as a potential substitute flavoring savory "umami" because of the content of glutamic acid. This research was aimed to determine the effects of using different raw materials to the content of glutamic acid and the quality of fish pastes. The research material were shrimp paste from fresh anchovies, fresh ponyfish and planktonic shrimp. The experimental design in this study was a randomized block design with 3 treatments in triplicates. Analysis of the samples quality included organoleptic, glutamic acid, protein content, water, TPC, Aw, salt content and pH. The data were analyzed by using ANOVA and the differences between treatments was tested using Significant Difference test. The results showed that the differences of raw materials significantly different (p<0.05) affect to the of protein content, glutamic acid, moisture content, TPC, Aw and pH. The differences of raw materials not significantly different (p>0.05) to the salt content. The use of raw material with a planktonic shrimp produced the highest value of glutamic acid (12.56%). The specification of organoleptic value appearance, odor and taste gived significant effect (p<0,05), while the texture and fungi gave no significant effect (p>0,05). The lowest moisture content and pH contained in shrimp paste with the raw materials of planktonic shrimp (moisture content = 40,05%, pH = 6,28), meanwhile at the TPC test and Aw the lowest value contained in raw materials of anchovy (TPC = 3,98×102, Aw = 0,82). Based on the treatment using planktonic shrimp as raw material showed the best quality of raw material among the others with an average value of organoleptic 7.87 ≤ μ ≤ 8.06, glutamic acid (12.56%), protein content (35,10%), water content (40.05%), TPC (1,74×103 colony/g), Aw (0.84 ), salt content (0,64%) and pH (6.28)

Substitution of antibodies and receptors with molecularly imprinted polymers in enzyme-linked and fluorescent assays

A new technique for coating microtitre plates with molecularly imprinted polymers (MIP), specific for low-molecular weight analytes (epinephrine, atrazine) and proteins is presented. Oxidative polymerization was performed in the presence of template; monomers: 3-aminophenylboronic acid, 3- thiopheneboronic acid and aniline were polymerized in water and the polymers were grafted onto the polystyrene surface of the microplates. It was found that this process results in the creation of synthetic materials with antibody-like binding properties. It was shown that the MIP-coated microplates are particularly useful for assay development. The high stability of the polymers and good reproducibility of the measurements make MIP coating an attractive alternative to conventional antibodies or receptors used in ELISA

Disorder Averaging and Finite Size Scaling

We propose a new picture of the renormalization group (RG) approach in the presence of disorder, which considers the RG trajectories of each random sample (realization) separately instead of the usual renormalization of the averaged free energy. The main consequence of the theory is that the average over randomness has to be taken after finding the critical point of each realization. To demonstrate these concepts, we study the finite-size scaling properties of the two-dimensional random-bond Ising model. We find that most of the previously observed finite-size corrections are due to the sample-to-sample fluctuation of the critical temperature and scaling is more adequate in terms of the new scaling variables.Comment: 4 pages, 6 figures include

Total Molecular Gas Masses of Planck - Herschel Selected Strongly Lensed Hyper Luminous Infrared Galaxies

We report the detection of CO(1 - 0) line emission from seven Planck and Herschel selected hyper luminous (LIR(8-1000um) > 10^13Lsun) infrared galaxies with the Green Bank Telescope (GBT). CO(1 - 0) measurements are a vital tool to trace the bulk molecular gas mass across all redshifts. Our results place tight constraints on the total gas content of these most apparently luminous high-z star-forming galaxies (apparent IR luminosities of LIR > 10^(13-14) Lsun), while we confirm their predetermined redshifts measured using the Large Millimeter Telescope, LMT (zCO = 1.33 - 3.26). The CO(1 - 0) lines show similar profiles as compared to Jup = 2 -4 transitions previously observed with the LMT. We report enhanced infrared to CO line luminosity ratios of = 110 (pm 22) Lsun(K km s^-1 pc^-2)^-1 compared to normal star-forming galaxies, yet similar to those of well-studied IR-luminous galaxies at high-z. We find average brightness temperature ratios of = 0.93 (2 sources), = 0.34 (5 sources), and = 0.18 (1 source). The r31 and r41 values are roughly half the average values for SMGs. We estimate the total gas mass content as uMH2 = (0.9 - 27.2) x 10^11(alphaCO/0.8)Msun, where u is the magnification factor and alphaCO is the CO line luminosity to molecular hydrogen gas mass conversion factor. The rapid gas depletion times are, on average, tau = 80 Myr, which reveal vigorous starburst activity, and contrast the Gyr depletion timescales observed in local, normal star-forming galaxies.Comment: published in MNRAS, 9pages, 5fig

The right way to kiss: directionality bias in head-turning during kissing

Humans have a bias for turning to the right in a number of settings. Here we document a bias in head-turning to the right in adult humans, as tested in the act of kissing. We investigated head-turning bias in both kiss initiators and kiss recipients for lip kissing, and took into consideration differences due to sex and handedness, in 48 Bangladeshi heterosexual married couples. We report a significant male bias in the initiation of kissing and a significant bias in head-turning to the right in both kiss initiators and kiss recipients, with a tendency among kiss recipients to match their partners’ head-turning direction. These interesting outcomes are explained by the influences of societal learning or cultural norms and the potential neurophysiological underpinnings which together offer novel insights about the mechanisms underlying behavioral laterality in humans

Dynamical Characterization of Galaxies at z~4-6 via Tilted Ring Fitting to ALMA [CII] Observations

Until recently, determining the rotational properties of galaxies in the early universe (z>4, Universe age <1.5Gyr) was impractical, with the exception of a few strongly lensed systems. Combining the high resolution and sensitivity of ALMA at (sub-) millimeter wavelengths with the typically high strength of the [CII] 158um emission line from galaxies and long-developed dynamical modeling tools raises the possibility of characterizing the gas dynamics in both extreme starburst galaxies and normal star forming disk galaxies at z~4-7. Using a procedure centered around GIPSY's ROTCUR task, we have fit tilted ring models to some of the best available ALMA [CII] data of a small set of galaxies: the MS galaxies HZ9 & HZ10, the Damped Lyman-alpha Absorber (DLA) host galaxy ALMA J0817+1351, the submm galaxies AzTEC/C159 and COSMOS J1000+0234, and the quasar host galaxy ULAS J1319+0950. This procedure directly derives rotation curves and dynamical masses as functions of radius for each object. In one case, we present evidence for a dark matter halo of O(10^11) solar masses. We present an analysis of the possible velocity dispersions of AzTEC/C159 and ULAS J1319+0950 based on matching simulated observations to the integrated [CII] line profiles. Finally, we test the effects of observation resolution and sensitivity on our results. While the conclusions remain limited at the resolution and signal-to-noise ratios of these observations, the results demonstrate the viability of the modeling tools at high redshift, and the exciting potential for detailed dynamical analysis of the earliest galaxies, as ALMA achieves full observational capabilities.Comment: 20 pages, 6 figures, Accepted for publication in Ap