1,291 research outputs found

    Daya Terima Dan Zat Gizi Permen Jeli Dengan Penambahan Bubuk Daun Kelor (Moringa Oleifera)

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    Moringa oleifera is local plant rich in nutrients, unfortunately its utilization as a foodstuff is limited. In order to maximize the absorbtion of nutrients inside moringa, it should be made as favor food enjoyed by the people such as jelly candy. This research was conducted to evaluate organoleptic properties and nutritional value (energy and â-caroten) of jelly candy formulated with Moringa leaves powder. Using Comlpetely Randomized Design with 6 times repetition in 4 formulas which are 1 controlled formula and 3 modifi ed formulas (F1, F2, and F3), jelly candy then tested to 32untrained panels. Treatment given in this study was by adding 2%, 4%, and 6% moringa leaves powder into jelly candy formula. Data was analyzed descriptively and statistically using Kruskal Wallis and Mann Whitney test to fi nd out the difference pair. Recommended formula was chosen by counting the highest mean score of the sensory evaluationtest. The result of sensory evaluation showed that Moringa Jelly Candy was generally accepted with category “like”. However, jelly candy with lowest level of Moringa leaves powder (F1) was most acceptable in terms of color, odor, texture, and fl avor. Statistical analysis showed that the scores of color, odor, and texture were not signifi cantly different (p > 0.05) and fl avor was (p < 0.005) which means that by adding moringa leaves powder into jelly candy formula only infl uence the fl avor of jelly candy. Recommended jelly candy formula is F1 with nutritional analysis showed that per 100 g of jelly candy contains 205,8 kcal and 0.178 mcg of B -caroten

    Pengaruh Substitusi Rumput Laut (Eucheuma Cottonii) Dan Jamur Tiram (Pleurotus Ostreatus) Terhadap Daya Terima Dan Kandungan Serat Pada Biskuit

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    Biscuit is a food product made from the basic ingredient fl our that baked until moisture content less than 5%. Commercial biscuits are generally rich in energy and high in sugars derive from carbohydrates and fats, but low infi ber. Seaweed (Eucheuma cottonii) and arrowroot fl our are high-fi ber food, while oyster mushroom contains high protein so it can be a potential ingredients to be substituted in biscuits. The addition of seaweed and oyster mushroom was expected to increase the fi ber content of biscuits compared to other biscuits. This study aimed to determine the acceptability and improve fi ber content in biscuits with the substitution of seaweed and oyster mushrooms. This study used a completely randomized design (CRD) with 3 treatments and 4 repetitions. Arrowroot fl our substitution treatment,seaweed, and oyster mushrooms were applied as F1 (25%: 50% to 25%), F2 (25%: 45%: 30%), and F3 (25%: 40%: 35%). Acceptability of biscuits based on organoleptic test and fi ber content from calculation based on Indonesia Food Composition Database and also laboratory analysis using proximate test. This research showed that formula 3 had the highest score based on organoleptic test with score 2.86. The highest fi ber content per serving (50 g) was found in formula 1 with 10.59 g of fi ber. The conclusion of this research is that the biscuit with substitution of seaweed andoyster mushroom has a good acceptability and higher fi ber content compared to commercial biscuits

    The Dust Content of Galaxy Clusters

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    We report on the detection of reddening toward z ~ 0.2 galaxy clusters. This is measured by correlating the Sloan Digital Sky Survey cluster and quasar catalogs and by comparing the photometric and spectroscopic properties of quasars behind the clusters to those in the field. We find mean E(B-V) values of a few times 10^-3 mag for sight lines passing ~Mpc from the clusters' center. The reddening curve is typical of dust but cannot be used to distinguish between different dust types. The radial dependence of the extinction is shallow near the cluster center suggesting that most of the detected dust lies at the outskirts of the clusters. Gravitational magnification of background z ~ 1.7 sources seen on Mpc (projected) scales around the clusters is found to be of order a few per cent, in qualitative agreement with theoretical predictions. Contamination by different spectral properties of the lensed quasar population is unlikely but cannot be excluded.Comment: 4 pages, 3 figure

    The Cut & Enhance method : selecting clusters of galaxies from the SDSS commissioning data

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    We describe an automated method, the Cut & Enhance method (CE) for detecting clusters of galaxies in multi-color optical imaging surveys. This method uses simple color cuts, combined with a density enhancement algorithm, to up-weight pairs of galaxies that are close in both angular separation and color. The method is semi-parametric since it uses minimal assumptions about cluster properties in order to minimize possible biases. No assumptions are made about the shape of clusters, their radial profile or their luminosity function. The method is successful in finding systems ranging from poor to rich clusters of galaxies, of both regular and irregular shape. We determine the selection function of the CE method via extensive Monte Carlo simulations which use both the real, observed background of galaxies and a randomized background of galaxies. We use position shuffled and color shuffled data to perform the false positive test. We have also visually checked all the clusters detected by the CE method. We apply the CE method to the 350 deg^2 of the SDSS (Sloan Digital Sky Survey) commissioning data and construct a SDSS CE galaxy cluster catalog with an estimated redshift and richness for each cluster. The CE method is compared with other cluster selection methods used on SDSS data such as the Matched Filter (Postman et al. 1996, Kim et al. 2001), maxBCG technique (Annis et al. 2001) and Voronoi Tessellation (Kim et al. 2001). The CE method can be adopted for cluster selection in any multi-color imaging surveys.Comment: 62 pages, 32 figures, Accepted for publication in the Astronomical Journal, "the CE galaxy cluster catalog can be downloaded from, http://astrophysics.phys.cmu.edu/~tomo/ce/

    The C4 Clustering Algorithm: Clusters of Galaxies in the Sloan Digital Sky Survey

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    We present the "C4 Cluster Catalog", a new sample of 748 clusters of galaxies identified in the spectroscopic sample of the Second Data Release (DR2) of the Sloan Digital Sky Survey (SDSS). The C4 cluster--finding algorithm identifies clusters as overdensities in a seven-dimensional position and color space, thus minimizing projection effects which plagued previous optical clusters selection. The present C4 catalog covers ~2600 square degrees of sky with groups containing 10 members to massive clusters having over 200 cluster members with redshifts. We provide cluster properties like sky location, mean redshift, galaxy membership, summed r--band optical luminosity (L_r), velocity dispersion, and measures of substructure. We use new mock galaxy catalogs to investigate the sensitivity to the various algorithm parameters, as well as to quantify purity and completeness. These mock catalogs indicate that the C4 catalog is ~90% complete and 95% pure above M_200 = 1x10^14 solar masses and within 0.03 <=z <= 0.12. The C4 algorithm finds 98% of X-ray identified clusters and 90% of Abell clusters within 0.03 <= z <= 0.12. We show that the L_r of a cluster is a more robust estimator of the halo mass (M_200) than the line-of-sight velocity dispersion or the richness of the cluster. L_r. The final SDSS data will provide ~2500 C4 clusters and will represent one of the largest and most homogeneous samples of local clusters.Comment: 32 pages of figures and text accepted in AJ. Electronic version with additional tables, links, and figures is available at http://www.ctio.noao.edu/~chrism/c

    Automated template-based brain localization and extraction for fetal brain MRI reconstruction.

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    Most fetal brain MRI reconstruction algorithms rely only on brain tissue-relevant voxels of low-resolution (LR) images to enhance the quality of inter-slice motion correction and image reconstruction. Consequently the fetal brain needs to be localized and extracted as a first step, which is usually a laborious and time consuming manual or semi-automatic task. We have proposed in this work to use age-matched template images as prior knowledge to automatize brain localization and extraction. This has been achieved through a novel automatic brain localization and extraction method based on robust template-to-slice block matching and deformable slice-to-template registration. Our template-based approach has also enabled the reconstruction of fetal brain images in standard radiological anatomical planes in a common coordinate space. We have integrated this approach into our new reconstruction pipeline that involves intensity normalization, inter-slice motion correction, and super-resolution (SR) reconstruction. To this end we have adopted a novel approach based on projection of every slice of the LR brain masks into the template space using a fusion strategy. This has enabled the refinement of brain masks in the LR images at each motion correction iteration. The overall brain localization and extraction algorithm has shown to produce brain masks that are very close to manually drawn brain masks, showing an average Dice overlap measure of 94.5%. We have also demonstrated that adopting a slice-to-template registration and propagation of the brain mask slice-by-slice leads to a significant improvement in brain extraction performance compared to global rigid brain extraction and consequently in the quality of the final reconstructed images. Ratings performed by two expert observers show that the proposed pipeline can achieve similar reconstruction quality to reference reconstruction based on manual slice-by-slice brain extraction. The proposed brain mask refinement and reconstruction method has shown to provide promising results in automatic fetal brain MRI segmentation and volumetry in 26 fetuses with gestational age range of 23 to 38 weeks

    Early Life History and a Modeling Framework for Lobster (Homarus Americanus) Populations in the Gulf of Maine

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    Beginning in the late 1980s, lobster (Homarus americanus) landings for the state of Maine and the Bay of Fundy increased to levels more than three times their previous 20-year means. Reduced predation may have permitted the expansion of lobsters into previously inhospitable territory, but we argue that in this region the spatial patterns of recruitment and the abundance of lobsters are substantially driven by events governing the earliest life history stages, including the abundance and distribution of planktonic stages and their initial settlement as Young-of-Year (YOY) lobsters. Settlement densities appear to be strongly driven by abundance of the pelagic postlarvae. Postlarvae and YOY show large-scale spatial patterns commensurate with coastal circulation, but also multi-year trends in abundance and abrupt shifts in abundance and spatial patterns that signal strong environmental forcing. The extent of the coastal shelf that defines the initial settlement grounds for lobsters is important to future population modeling. We address one part of this definition by examining patterns of settlement with depth, and discuss a modeling framework for the full life history of lobsters in the Gulf of Maine

    Improved constraints on H0 from a combined analysis of gravitational-wave and electromagnetic emission from GW170817

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    The luminosity distance measurement of GW170817 derived from GW analysis in Abbott et al. 2017 (here, A17:H0) is highly correlated with the measured inclination of the NS-NS system. To improve the precision of the distance measurement, we attempt to constrain the inclination by modeling the broad-band X-ray-to-radio emission from GW170817, which is dominated by the interaction of the jet with the environment. We update our previous analysis and we consider the radio and X-ray data obtained at t<40t<40 days since merger. We find that the afterglow emission from GW170817 is consistent with an off-axis relativistic jet with energy 1048erg<Ek3×1050erg10^{48}\,\rm{erg}<E_{k}\le 3\times 10^{50} \,\rm{erg} propagating into an environment with density n102104cm3n\sim10^{-2}-10^{-4} \,\rm{cm^{-3}}, with preference for wider jets (opening angle θj=15\theta_j=15 deg). For these jets, our modeling indicates an off-axis angle θobs2550\theta_{\rm obs}\sim25-50 deg. We combine our constraints on θobs\theta_{\rm obs} with the joint distance-inclination constraint from LIGO. Using the same 170\sim 170 km/sec peculiar velocity uncertainty assumed in A17:H0 but with an inclination constraint from the afterglow data, we get a value of H0=H_0=74.0±11.57.574.0 \pm \frac{11.5}{7.5} \mbox{km/s/Mpc}, which is higher than the value of H0=H_0=70.0±12.08.070.0 \pm \frac{12.0}{8.0} \mbox{km/s/Mpc} found in A17:H0. Further, using a more realistic peculiar velocity uncertainty of 250 km/sec derived from previous work, we find H0=H_0=75.5±11.69.675.5 \pm \frac{11.6}{9.6} km/s/Mpc for H0 from this system. We note that this is in modestly better agreement with the local distance ladder than the Planck CMB, though a significant such discrimination will require 50\sim 50 such events. Future measurements at t>100t>100 days of the X-ray and radio emission will lead to tighter constraints.Comment: Submitted to ApJL. Comments Welcome. Revised uncertainties in v
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