cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Generalized Omori law for aftershocks and foreshocks from a simple dynamics
Creators: name: Shaw, Bruce E.
Publisher: name: Columbia University
Year: 1993
Subjects: Plate tectonics

description: A theory of the time dependence of earthquake foreshocks and aftershocks is presented. The theory involves the response to sudden forcing of a dynamics of self-driven acceleration to failure. The empirically observed Omori law, which says that the rate of aftershocks as a function of time falls as a power law in time, is derived theoretically. The exponent of the falloff in time is shown to generically give a value close to one, for rapidly accelerating dynamics. To see if the theory is consistent with other features of real data, foreshocks and aftershocks of small magnitude mainshocks are analyzed in a catalogue of real earthquakes. Results show that the spatial and temporal distribution of aftershocks is separable into a dependence on space and a dependence on time, that the spatial distribution of aftershocks is consistent with the hypothesis that stress changes from the mainshock cause aftershocks, and that the number of foreshocks approaches the number of aftershocks as the magnitude of the mainshock becomes smaller.
Long-term drought sensitivity of trees in second-growth forests in a humid region
Creators: name: Pederson, Neil
name: Tackett, Kacie
name: McEwan, Ryan W.
name: Clark, Stacy
name: Cooper, Adrienne
name: Brosi, Glade
name: Eaton, Ray
name: Stockwell, R. Drew
Publisher: name: Columbia University
Year: 2012
Subjects: subject: Ecology
subject: FOS: Biological sciences

description: Classical field methods of reconstructing drought using tree rings in humid, temperate regions typically target old trees from drought-prone sites. This approach limits investigators to a handful of species and excludes large amounts of data that might be useful, especially for coverage gaps in large-scale networks. By sampling in more “typical” forests, network density and species diversity would increase in ways that could potentially improve reconstructions. Ten nonclassical tree-ring chronologies derived from randomly selected trees, trees from logged forests, or both were compared to more classical chronologies and an independent regional drought reconstruction to determine their usefulness for dendrohydroclimatic research. We find that nonclassical chronologies are significantly correlated to classical chronologies and reconstructed drought over the last 2–3 centuries. While nonclassical chronologies have spectral properties similar to those from classical dendroclimatic collections, they do lack spectral power at lower frequencies that are present in the drought reconstruction. Importantly, our results show that tree growth is strongly dependent on moisture availability, even for small, randomly selected trees in cut forests. These results indicate that there could be more data available in areas with few current tree-ring collections for studying climate history and that drought plays an important role in humid forests.
An analysis of risk in financial investment
Creators: name: Quiroga-Antezana, Eduardo Raúl
Publisher: name: University of British Columbia
Year: 2011

description: This essay attempts a preliminary explanation of the behavioral content in financial investment, and stops short of measuring it. In the past insufficient attention has been given to the analysis of risk-taking behavior in terms of expected utility and to the relationship between that behavior in financial investment and some of the variables in social structure such as occupation and wealth. These issues are presented in Chapter 1. Chapter 2 presents and discusses the scope and method of the essay, some contemporary research trends in economics, sociology, and anthropology, the analytic focus of economic sociology and anthropology relevant to the essay, markets and exchange, and the state of interdisciplinary research in this connection. Two chapters are devoted to decision-making theory; in Chapter 3, the theories of riskless and risky choices, the Bernoulli hypothesis, and game theory; in Chapter 4, unmeasurable uncertainty, a psychological criticism of the theory of risky choices and a review of risk-taking behavior as a function of the situation, the individual, and the group. Chapter 5 presents a standard economic analysis of the investment function and the liquidity preference theory, and adds a review of two early studies (Marx, Weber) on financial investment. In Chapter 6 the problem is restated in relation to the above considerations. Macrostructures are defined and the substructures differentiated. The unit of analysis is a micro-structure of financial investors drawn from one of Vancouver's brokerage firms, and the tool of analysis is a survey. In Chapter 7 the empirical data are presented and discussed in terms of the theoretical considerations. Since our data are crude, we have limited ourselves to conjectures which can be given a preliminary test. Specifically, we set forth (a) that occupation and wealth greatly affect risk-taking behavior; (b) that the higher the income and stock of wealth as indicated by portfolio composition the greater the risk aversion, and that the investment utility is a source of amusement or serves as a hedge against inflation; (c) that the smaller the income and stock of wealth as indicated by portfolio composition the higher the risk-taking behavior because of its greater utility, and that the investment utility contributes to make ends meet or provide work satisfaction. In the remaining section of the essay (Chapter 8) we appraise our research design and suggest future lines of research.
title: Effect of Proteolytic Enzymes on Transfection and Transformation of Streptococcus lactis Protoplasts and Transformation of Streptococcus cremoris
Creators: name: Woskow, Steven A.
Publisher: name: Utah State University
Year: 1987

description: The effect of proteolytic enzymes on the transformation and transfection of Streptococcus lactis LM2301 protoplasts was examined in an attempt to eliminate the variability observed. By using both chymotrypsin and mutanolysin to form protoplasts followed by spread plating, consistent frequencies of 104 to 105 transformants per μg of pGB301 DNA, and 105 transfectants per μg of c2 bacteriophage DNA where achieved. Optimum transformation and transfection frequencies were obtained when 16 h cultures were treated simultaneously with 25 U/ml mutanolysin and 1.25 U/ml chymotrypsin for 15 min. Trypsin and pronase in conjunction with mutanolysin also increased transformation frequencies higher than when mutanolysin was used alone, but pronase was not as effective as chymotrypsin or trypsin. These results may explain the variability in transformation of mutanolysin-treated cells of S. lactis since commercial sources of mutanolysin contain varying amounts of proteolytic enzyme activity.
Transformation of Streptococcus cremoris CS224 at low frequency (5 transformants per μg of pGB301 DNA) was achieved. Plasmid pGB301 was able to replicate and express antibiotic resistance in the resultant transformant (designated S. cremoris SW301). The presence of pGB301 in S. cremoris SW301 was confirmed by agarose gel electrophoresis.
O'SMIR BOLALAR O'RTASIDA UCHRAYDIGAN ZO'RAVONLIKNI SALBIY OQIBATLARI VA UNI OLDINI OLISH CHORA TADBIRLARI
Creators: name: Bozorova, Gulrux
Publisher: name: Zenodo
Year: 2025

description: Ushbu maqolada o'smir bolalar o'rtasida kuzatilayotgan zo'ravonlikning sabablari, turlari, salbiy oqibatlari va oldini olish yo'llari tahlil qilinadi. O'smirlarning psixologik va ijtimoiy rivojlanishiga zo'ravonlikning ta'siri, shuningdek, bu muammoni hal qilishda oilaning, maktabning va jamiyatning roli ko'rib chiqiladi. Maqolada samarali profilaktika dasturlarini yaratish va amalga oshirish bo'yicha takliflar beriladi.
title: Using Adaptive Conjoint Analysis and Market Simulations to Determine the Effect and Usefulness of Nutrition Label Information in Consumer Purchase Decisions
Creators: name: Geiger, Constance J.
Publisher: name: Utah State University
Year: 1988

description: Nutrition labeling research suggests consumers want nutrition information on the label; however, many do not comprehend it. The purpose of Phase I was to determine the effect of: 1. two levels of nutrition label formats; 2. three levels of nutrition information load on consumers' preference for product choice using adaptive conjoint analysis. A computer interactive interview was conducted on 252 consumers in Crossroads Mall, Salt Lake City, Utah. label alternatives were printed on soup cans to realistically portray the information. The conjoint analysis compared the attributes, nutrition information format, and nutrition information load in addition to brand and price and determined how the study participants ranked choices within each of these attributes and against the other attributes. There were significant differences (p < .000) among all three mean utility values± Standard Error of the Mean (SEM) of information load, most (.300 ± .03) , more (.154 ± .02), and some (-.231 ± .03). There was no difference between graphical (.093 ± .027) and traditional (.055 ± .020) formats (p = .298). For the other attributes, there were significant differences (p < .000) among all brands, Campbell's (.590 ± .03), Private label (-.007 ± .02) Generic (-.361 ± .03) and all prices, (p < .000), low (.431 ± .03), medium (.022 ± .02), and high (-.230 ± .03). Market simulations were performed and market share was shifted from the major brand when nutrition information was added to a Private label or Generic brand.
The purpose of Phase II was to determine the effect of: 1. three levels of nutrition information content load; 2. two levels of nutrition information order; 3. three levels of nutrition information format; and 4. four levels of nutrition information expression on consumers' perceptions of label usefulness in purchase decisions. The methodology was the same as Phase I. There were significant differences (p < .000) among all three mean utility values ± SEM of information load, most (.327 ± .02), more (.091 ± .02) , and some (-.213 ± .03), and between the two mean utility values ± SEM of information order, rearranged (.157 ± .03) and traditional (-.02 ± .02). Consumers significantly preferred (p < .000) the graphical format (.148 ± .02) over the graphical nutrient density (.038 ± .02) and traditional (.018 ± .03) formats. Consumers significantly preferred (p < .000) nutrition information stated in absolute numbers and percentages (.296 ± .03), versus absolute numbers only (.028 ± .03), traditional (-.026 ± .03), and percentages only (-.025 ± .03) expressions. The most useful nutrition label in a purchase decision was one that contained the most information, in a rearranged order, with a graphical format, and an absolute number and percentages expression.
Witnessing entanglement in phase space using inefficient detectors
Creators: name: Lee, Seung-Woo
name: Jeong, Hyunseok
name: Jaksch, Dieter
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a scheme for witnessing entanglement in phase space by significantly inefficient detectors. The implementation of this scheme does not require any additional process for correcting errors in contrast to previous proposals. Moreover, it allows us to detect entanglement without full a priori knowledge of the detection efficiency. It is shown that entanglement in single photon entangled and two-mode squeezed states can be witnessed with detection efficiency as low as 40%. Our approach enhances the possibility of witnessing entanglement in various physical systems using current detection technologies.
description: 5 pages, 2 figures; Revised version
Carbon Isotope Variability across the Ediacaran Yangtze Platform in South China: Implications for a Large Surface-to-Deep Ocean δ13C Gradient
Creators: name: Jiang, Ganqing
name: Kaufman, Alan J.
name: Christie-Blick, Nicholas
name: Zhang, Shihong
name: Wu, Huaichun
Publisher: name: Columbia University
Year: 2007
Subjects: subject: Geochemistry
subject: FOS: Earth and related environmental sciences
subject: Chemical oceanography
subject: Submarine geology

description: New isotope data obtained from relatively conformable, carbonate-rich strata of the Ediacaran Yangtze platform in South China reveal substantial δ13C variability. In platform sections, four negative δ13C anomalies with a nadir down to ≤− 8‰ (PDB) are present in the interval between the cap carbonate level (∼ 635 Ma) and the Precambrian/Cambrian boundary (∼ 542 Ma), while in slope and basinal sections, δ13C values are negative through the entire Doushantuo Formation (∼ 635–551 Ma). If these δ13C values are close to their primary seawater signature, they imply a strong (≥ 10‰) surface-to-deep ocean δ13C gradient that is consistent with long-term deep ocean anoxia and the presence of a large dissolved organic carbon (DOC) reservoir. The two prominent negative δ13C excursions within the Doushantuo Formation above the cap carbonate level are associated with shoaling and local exposure of the platform. The anomalies may thus record remineralization of a large oceanic DOC pool via sulfate reduction that transferred 13C-depleted carbon from the oceanic DOC reservoir to the surface ocean during regression. Inconsistencies in Ediacaran δ13C profiles globally and variations in South China in particular highlight the need for further evaluation of local departures in δ13C from an inferred average seawater signature.
A Schmidt-Kennicutt law for star formation in the Milky Way disk
Creators: name: Fuchs, B.
name: Jahreiss, H.
name: Flynn, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We use a new method to trace backwards the star formation history of the Milky Way disk, using a sample of M dwarfs in the solar neighbourhood which is representative for the entire solar circle. M stars are used because they show H_alpha emission until a particular age which is a well calibrated function of their absolute magnitudes. This allows us to reconstruct the rate at which disk stars have been born over about half the disk's lifetime. Our star formation rate agrees well with those obtained by using other, independent, methods and seems to rule out a constant star formation rate. The principal result of this study is to show that a relation of the Schmidt-Kennicut type (which relates the star formation rate to the interstellar gas content of galaxy disks) has pertained in the Milky Way disk during the last 5 Gyr. The star formation rate we derive from the M dwarfs and the interstellar gas content of the disk can be inferred as a function of time from a model of the chemical enrichment of the disk, which is well constrained by the observations indicating that the metallicity of the Galactic disk has remained nearly constant over the timescales involved. We demonstrate that the star formation rate and gas surface densities over the last 5 Gyrs can be accurately described by a Schmidt-Kennicutt law with an index of Gamma = 1.45 (+0.22,-0.09). This is, within statistical uncertainties, the same value found for other galaxies.
description: 7 pages, 5 figures, accepted by Astron. J
title: The European Defense Community
Creators: name: Alfandary, Robert H.
Publisher: name: Utah State University
Year: 1954

description: In 1915 it was a common belief that World War II had just been fought to successful completion. The German and Japanese Empires were vanquished, with Germany destroyed more thoroughly than any of the co un tries she had occupied. The two large remaining powers, the United States and the Soviet Union, seemed to be working together for the common good of the whole world. They had even agreed to participate in the United Nations Organization, which, as a matter of fact, they had been prominently associated with since the earliest negotiations. Now universal peace, and maybe the Millennium, would be the order of the day.
But Europe was utterly exhausted, her population decimated, and her industries destroyed. The states men of Western Europe set themselves up to rebuild their countries, both physically and morally. Generously, the United States furnished money and supplies to start the reconstruction. U.N.R.R.A., loan s, and Marshal aid were designed to accomplish this task.
On the political front the collaborators, Nazis and Quislings drew long prison sentences, and faced the firing squad. The hangman's noose was used extensively in the liberated Eastern Europe, which the Soviet Armies were occupying, or where Soviet troops were maintained to guard communication lines to Germany and Austria.
Determining the orientations of ocean bottom seismometers using ambient noise correlation
Creators: name: Zha, Yang
name: Webb, Spahr C.
name: Menke, William H.
Publisher: name: Columbia University
Year: 2013
Subjects: subject: Oceanography
subject: FOS: Earth and related environmental sciences
subject: Geophysics

description: The cross-correlation of multicomponent ambient seismic noise can reveal both the velocity and polarization of surface waves propagating between pairs of stations. We explore this property to develop a novel method for determining the horizontal orientation of ocean bottom seismometers (OBS) by analyzing the polarization of Rayleigh waves retrieved from ambient noise cross-correlation. We demonstrate that the sensor orientations can be estimated through maximizing the correlation between the radial-vertical component and the phase-shifted vertical-vertical component of the empirical Green's tensor. We apply this new method to the ELSC (Eastern Lau Spreading Center) OBS experiment data set and illustrate its robustness by comparing the obtained orientations with results from a conventional method utilizing teleseismic P and Rayleigh wave polarizations. When applied to a large OBS array, the ambient noise method provides a larger number of orientation estimates and better azimuthal coverage than typically is possible with traditional methods.
Estimation of Magnetic Field Strength in the Turbulent Warm Ionized Medium
Creators: name: Wu, Qingwen
name: Kim, Jongsoo
name: Ryu, Dongsu
name: Cho, Jungyeon
name: Alexander, Paul
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We studied Faraday rotation measure (RM) in turbulent media with the rms Mach number of unity, using isothermal, magnetohydrodynamic turbulence simulations. Four cases with different values of initial plasma beta were considered. Our main findings are as follows. (1) There is no strong correlation between the fluctuations of magnetic field strength and gas density. So the magnetic field strength estimated with RM/DM (DM is the dispersion measure) correctly represents the true mean strength of the magnetic field along the line of sight. (2) The frequency distribution of RMs is well fitted to the Gaussian. In addition, there is a good relation between the width of the distribution of RM/$\bar{\rm RM}$ ($\bar{\rm RM}$ is the average value of RMs) and the strength of the regular field along the line of sight; the width is narrower, if the field strength is stronger. We discussed the implications of our findings in the warm ionized medium where the Mach number of turbulent motions is around unity.
description: To appear in ApJ Letters
title: Effect of Proteolytic Activity of the Lactic Cultures on Mozzarella Cheese Quality
Creators: name: Wang, Wen-Hsu Amos
Publisher: name: Utah State University
Year: 1989

description: The Mozzarella cheese market is growing rapidly. Major concerns with cheese meltability and color have arisen in the fast food industry. Pre starter culture was used in this study to improve the physical properties of Mozzarella cheese. Three tests (stretch test, melt test, and browning test) were modified to evaluate the quality of cheese.
A stretch test using the Brookfield helipath viscometer to stretch the cheese sample at 60°C was successful in distinguishing cheeses from different make procedures and from different proteolytic strains. A melt test using a glass tube to hold the cheese flow at 110°C for 60 min was used to determine meltability of cheese. A chroma meter was used to measure color change after the cheese sample was subjected to boiling water for 60 min. The b* value was used to indicate the color change.
Cheese made with Pre strains of Lactobacillus bulgaricus stretched less but showed longer melting flow than that from Prt+ strains. Cheese made with Pre strains was lighter in color than cheese from Prt+ strains. An inverse relationship existed between stretchability and meltability. When mixed cultures of L. bulgaricus and Streptococcus thermophil us were used, the symbiotic interaction in acid production of Prt+ strains was more effective than mixed cultures of Prt- strains. Stretchability of...
Measuring Value in Open Access Repositories
Creators: name: Wacha, Megan Elizabeth
name: Wisner, Meredith
Publisher: name: Columbia University
Year: 2011
Subjects: Library science

description: Open access institutional repositories were created to promote access to information, encourage scholarly communication, and demonstrate institutional prestige. While these repositories have been widely adopted, the quality of their contents often fails to represent their institution's scholarly output. Moreover, current research uses measurements of quantity, not quality, to assess their value. In response, this article opens new areas of scholarly inquiry by assessing the quality of contents. This is accomplished through a cross-sectional study of repositories at American colleges and universities across the academic spectrum, using citation indexing to identify an institution's articles and authors of highest impact.
Singular Charge Density at the Center of the Pion?
Creators: name: Miller, Gerald A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We relate the three-dimensional infinite momentum frame spatial charge density of the pion to its electromagnetic form factor. Diverse treatments of the measured form factor data including: phenomenological fits, non-relativistic quark models, the application of perturbative QCD, QCD sum rules, holographic QCD, and the Nambu Jona-Lasinio (NJL) model all lead to the result that the charge density at the center of the pion has a logarithmic divergence. Relativistic constituent quark models do not display this singularity. Future measurements planned for larger values of momentum transfer may determine whether or not a singularity actually occurs.
description: 6 pages, 2 figures
Entanglement production due to quench dynamics of an anisotropic XY chain in a transverse field
Creators: name: Sengupta, K.
name: Sen, Diptiman
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We compute concurrence and negativity as measures of two-site entanglement generated by a power-law quench (characterized by a rate 1/tau and an exponent alpha) which takes an anisotropic XY chain in a transverse field through a quantum critical point (QCP). We show that only the even-neighbor pairs of sites get entangled in such a process. Moreover, there is a critical rate of quench, 1/tau_c, above which no two-site entanglement is generated; the entire entanglement is multipartite. The ratio of the two-site entanglements between consecutive even neighbors can be tuned by changing the quench rate. We also show that for large tau, the concurrence (negativity) scales as sqrt{alpha/tau} (alpha/tau), and we relate this scaling behavior to defect production by the quench through a QCP.
description: 5 pages including 4 figures; added a figure on multipartite entanglement and some references -- this is the published version
Energy Contents of Some Non-Vacuum Spacetimes in Teleparallel Gravity
Creators: name: Sharif, M.
name: Taj, Sumaira
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This paper elaborates the problem of energy-momentum in the framework of teleparallel equivalent of General Relativity. For this purpose, we consider energy-momentum prescription derived from the integral form of the constraint equations developed in the Hamiltonian formulation of the teleparallel equivalent of General Relativity. We use this technique to investigate energy-momentum of stationary axisymmetric Einstein-Maxwell solutions and cosmic string spacetimes. The angular momentum, gravitational and matter energy-momentum fluxes of these spacetimes are also evaluated. It is concluded that the results of teleparallel theory are relatively analogous to the results of General Relativity.
description: 20 pages, accepted for publication in Astrophysics and Space Science
title: Measurement of Proteins in Milk and Dairy Products
Creators: name: Walsh, Marie K.
Publisher: name: Utah State University
Year: 1988

description: The purpose of this study was to develop a short, easy procedure to measure five major proteins in milk and to detect concentrations of added protein to dairy products. Combinations of casein or whey protein with nonfat-dry milk were made with concentration ratios from 0:10 to 10:0. Similar mixtures of defatted goat milk with defatted cow milk were prepared. Samples were hydrolyzed in 6 N HCl at 145°C for 4 h and analyzed for amino acid composition. Multiple regression equations were derived to estimate the relative content of whey protein or casein added to nonfat-dry milk and goat milk added to cow milk employing amino acid profiles of whey protein, casein, nonfat-dry milk, goat milk and cow milk. Correlation coefficient values were all greater than .99. Measuring individual concentrations of milk proteins required separating casein and why proteins by reverse phase high performance liquid chromatography on a C3 column. αs-, β-, and κ-casein were separated after dissociating casein micelles with mercaptoethanol and urea. A 40:60 to 0:100 gradient of .15 M sodium chloride/triethylamine (pH 2.5) and 40% acetonitrile was used. Whey proteins, α-lactalbumin and β-lactoglobulin were separated with a 95:5 to 0:100 gradient of .15 M sodium chloride (pH 2.4) and acetonitrile. Eluted proteins were collected from the column, analyzed for purity by electrophoresis, and hydrolyzed in 6 N HCl at 145°C for 4 h. Purified proteins and mixtures of purified proteins were analyzed for amino acid composition. Estimates of individual protein concentrations in mixtures were made by solving simultaneous equations based on amino acid composition using a tektronix 4052 computer.
Project Hope and the Hope School System in China: A Re-evaluation
Creators: name: Wang, Chengzhi
Publisher: name: Columbia University
Year: 1999
Subjects: Education, Elementary

description: I investigate the creation, development, contributions and limits of Project Hope, a huge government-endorsed education project seeking non-governmental contributions to overcome educational inadequacy in poverty-stricken rural communities in transitional China. By reexamining the composition of sponsored students, the locations of Hope Primary Schools and non-educational orientations for building and expanding schools, I argue that Project Hope and its Hope School system have not contributed to educational access, equality, equity, efficiency and quality as it should have. Poverty-reduction-oriented curriculum requirements in Hope Primary Schools are theoretically misleading and realistically problematic.
Radiative corrections to the Higgs potential in the LH model
Creators: name: Dobado, Antonio
name: Tabares-Cheluci, Lourdes
name: Penaranda, Siannah
name: Rodriguez-Laguna, Javier
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work we compute the radiative corrections to the Higgs mass and the Higgs quartic couplings coming from the Higgs sector itself and the scalar fields $ϕ$ in the Littlest Higgs (LH) model. The restrictions that the new contributions set on the parameter space of the models are also discussed. Finally this work, together with our three previous papers, complete our program addressed to compute the relevant contributions to the Higgs low-energy effective potential in the LH model and the analysis of their phenomenological consequences.
description: 27 pages, 4 figures, 1 table
Numerical Simulations of Magnetized Winds of Solar-Like Stars
Creators: name: Vidotto, A. A.
name: Opher, M.
name: Jatenco-Pereira, V.
name: Gombosi, T. I.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate magnetized solar-like stellar winds by means of self-consistent three-dimensional (3D) magnetohydrodynamics (MHD) numerical simulations. We analyze winds with different magnetic field intensities and densities as to explore the dependence on the plasma-beta parameter. By solving the fully ideal 3D MHD equations, we show that the plasma-beta parameter is the crucial parameter in the configuration of the steady-state wind. Therefore, there is a group of magnetized flows that would present the same terminal velocity despite of its thermal and magnetic energy densities, as long as the plasma-beta parameter is the same.
description: 2 pages, 4 figures, Proceedings of the IAU Symposium 259, "Cosmic Magnetic Fields: From Planets, to Stars and Galaxies", November 2008
title: Plasmin in Milk: Activity Measurement, Effect of Environmental Factors, and Correlation with Milk Coagulation
Creators: name: Bastian, Eric D.
Publisher: name: Utah State University
Year: 1989

description: Bovine plasmin activity was measured on H-D-valyl-L-leucyl-L-lysyl-4-nitroanilide by following absorbance changes at 405 nm. Steady-state kinetic parameters Vmax, Km, KI, and KI' were estimated. Bovine plasmin is competitively inhibited by casein and has a Kcat of .0158 ΔA405/min/nM, Km of .107 mM substrate, and KI of .86 mg/ml casein. Bovine plasmin can be measured directly in bovine milk without interference from casein.
A total of 380 milk samples from nineteen Holstein (one herd) and nineteen Jersey (one herd) cows was collected monthly during one lactation period. Samples from each cow were analyzed for fat, protein, plasmin activity, plasminogen, pH, SCC, clotting time, curd firming rate, and final curd firmness. Three age groups form each breed/herd were chosen; first, third, and fourth and later lactations.
Plasmin activity in milk was most affected by lactation number, with milk from fourth- and later-lactation cows having higher activity than milk from first- or third- lactation cows. Plasmin activity in milk increased during lactation but was not affected by breed/herd, pH, protein, or fat. Plasminogen averaged 5.4 times the plasmin activity in milk and increased during the first five months of lactation. Plasmin activity was higher in milk collected ruing summer and fall but plasminogen was higher in milk collected during fall and winter. Percentage of the total (plasmin+plasminogen) enzyme activated to plasmin increased in late-lactation milk and in milk from fourth- and later-lactation cows.
Plasmin activity did not affect any milk clotting parameters in this study. Increased protein in milk resulted in shorter clotting times. When statistically adjusted for protein content, clotting time was longer in milk from the Holstein herd compared to the Jersey herd. Curd firming rate was increased in milk with higher protein and fat. Milk samples collected in the fall had faster firming rates than milk from other seasons. Firming rates remained constant during lactation but increased with higher protein and fat content. Jersey herd milk produced firmer curd than Holstein herd milk and milk collected in the fall had firmer curd than during the other seasons.
Pengaruh Partisipasi Peserta dan Kebermaknaan Program Parenting Berbasis Mobile Learning Terhadap Kualitas Pengasuhan
Creators: name: Indri Ayu
name: Widiyanti, Indri Ayu
Publisher: name: figshare
Year: 2021
Subjects: subject: 130101 Continuing and Community Education
subject: FOS: Educational sciences

description: Belajar parenting melalui komunitas dengan menggunakan whatsapp untuk meningkatkan kualitas pengasuhan
Radial Velocity Studies of Close Binary Stars. XIV
Creators: name: Pribulla, Theodor
name: Rucinski, Slavek M.
name: DeBond, Heide
name: de Ridder, Archie
name: Karmo, Toomas
name: Thomson, J. R.
name: Croll, Bryce
name: Ogloza, Waldemar
name: Pilecki, Bogumil
name: Siwak, Michal
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Radial-velocity measurements and sine-curve fits to the orbital radial velocity variations are presented for ten close binary systems: TZ Boo, VW Boo, EL Boo, VZ CVn, GK Cep, RW Com, V2610 Oph, V1387 Ori, AU Ser, and FT UMa. Our spectroscopy revealed two quadruple systems, TZ Boo and V2610 Oph, while three stars showing small photometric amplitudes, EL Boo, V1387 Ori, and FT UMa, were found to be triple systems. GK Cep is close binary with a faint third component. While most of the studied eclipsing systems are contact binaries, VZ CVn and GK Cep are detached or semi-detached double-lined binaries, and EL Boo, V1387 Ori and FT UMa are close binaries of uncertain binary type. The large fraction of triple and quadruple systems found in this sample supports the hypothesis of formation of close binaries in multiple stellar systems; it also demonstrates that low photometric amplitude binaries are a fertile ground for further discoveries of multiple systems.
description: 5 figures, submitted to AJ
Das Liegenschaftskataster im Saarland - Erhebung der Tatsächlichen Nutzung
Creators: name: Degel, Björn
Publisher: name: Zenodo
Year: 2023
Subjects: Flächennutzung
Liegenschaftskataster
Tatsächliche Nutzung
ALKIS

description: Präsentation des Landesamtes für Vermessung, Geoinformation und Landesentwicklung anlässlich des vierten Begleitkreises des UBA-Projektes "Konsistenz und Aussagefähigkeit von Flächendaten".
title: Influence of Processing Parameters on Nutrient Recovery During Ultrafiltration of Milk and Meltability of Pasteurized Process Cheese Food made from the Retentate
Creators: name: Collinge, Susan Kay Fortier
Publisher: name: Utah State University
Year: 1989

description: Three batches of milk were ultrafiltered to 60, 65, or 70% volume reduction before diafiltration. Starting diafiltration at 70% volume reduction took less time and water without affecting nutrient recovery.
Whole milk was heated to 60, 72, and 82°C for 16 s. Milk representing each heat treatment was divided into three batches, one unacidified (pH 6.6), the others acidified to pH 6.2 and 5.8. The milk was ultrafiltered, diafiltered, and concentrated to 5x (80% volume reduction). Retentate was inoculated with .5% lactic culture and incubated at 28°C to pH 5.1. Each lot of fermented retentate was evaporated under 76 kPa vacuum until moisture was reduced to 35-38%, then made into pasteurized process cheese food by cooking to 82°C. The final product contained 43-44% moisture, 24-28% fat, 1.7% salt, and 2.5% sodium citrate. Fat and protein recovery were not affected by heat treatment or pH adjustment of the milk. Recovery of calcium, phosphorus, and riboflavin were significantly reduced following acidification of milk. Riboflavin recovery was higher when milk was preheated to 60°C as opposed to 72 or 82°C.
Effect of cooking temperature on meltability of process cheese food was evaluated by repeating the above experiment at three cooking temperatures, 70, 76, or 81 °C. Cooking temperature significantly affected meltability. Cheese cooked to 70°C melted best for all treatments. At all cooking temperatures, cheese from unacidified milk (pH 6.6) had greater meltability than cheese from milk acidified to pH 5.8 or 6.2. Cooking temperature had a greater effect on meltability of process cheese food made from ultrafiltered retentate than calcium content. Preheating milk before ultrafiltration did not significantly affect meltability of pasteurized process cheese food.
Meltability of pasteurized process cheese food was best when made from retentate heated (following ultrafiltration) to 61°C for 16 sand poorest when retentate was heated to 72 or 83°C.
During ultrafiltration without diafiltration, amino acid analysis was on samples taken at 0, 20, 40, 60, and 80% volume reduction. There were no differences in amino acid composition (g/100 g protein) between milk and 5x retentate.
Soluble nitrogen at pH 4.6 in pasteurized process cheese food was an approximate measure of undenatgred whey protein. As processing temperature increased from 66 to 82°C, undenatured whey protein decreased. Decrease in meltability due to increased processing temperature was related to denaturation of whey protein.
Process cheese food made from blends of UF curd and Cheddar cheese had acceptable meltability with up to 66% UF curd when the final processing temperature was 68°C.
Milk with high bacterial numbers (7.8 x 106 CFU/ml) was heated to 72°C for 16 s, acidified to pH 5.8 and ultrafiltered to a 5x concentration. Ultrafiltration proceeded normally and no processing difficulties were encountered.
Glossoscolecidae Michaelsen 1900
Creators: name: Ferreira, Talita
name: Santos, Alessandra
name: Demetrio, Wilian C.
name: Cardoso, Guilherme B. X.
name: Moraes, Rafael
name: Assis, Orlando
name: Niva, Cintia
name: Smokanit, Manoela
name: Knópik, Juliane
name: Sautter, Klaus D.
name: Brown, George G.
name: Bartz, Marie L. C.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Annelida
Clitellata
Haplotaxida
Glossoscolecidae

description: Glossoscolecidae (juveniles)  COFMBRPR0932, 1 juvenile, surface horizon (0–20 cm) of a Technosol with grass lawn in the Botanic Garden, Curitiba-PR (25°26'30.97"S 49°14'20.65"W), November 2013, M.L.C. Bartz, J. Knopik, K. Sautter and G.B.X. Cardoso, colls. COFMBRPR0933, 3 juveniles, surface horizon (0–20 cm) of a Technosol with grass lawn in the Botanic Garden, Curitiba-PR (25°26'30.97"S 49°14'20.65"W), June 2014, M.L.C. Bartz, K. Sautter and G.B.X. Cardoso, colls.
description: Published as part of Ferreira, Talita, Santos, Alessandra, Demetrio, Wilian C., Cardoso, Guilherme B. X., Moraes, Rafael, Assis, Orlando, Niva, Cintia, Smokanit, Manoela, Knópik, Juliane, Sautter, Klaus D., Brown, George G. & Bartz, Marie L. C., 2018, Earthworm species in public parks in Curitiba, Paraná, Brazil, pp. 535-547 in Zootaxa 4496 (1) on page 539, DOI: 10.11646/zootaxa.4496.1.41, http://zenodo.org/record/1447019
Prospects for Indirect Detection of Sneutrino Dark Matter with IceCube
Creators: name: Allahverdi, Rouzbeh
name: Bornhauser, Sascha
name: Dutta, Bhaskar
name: Richardson-McDaniel, Katherine
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the prospects for indirect detection of right-handed sneutrino dark matter at the IceCube neutrino telescope in a $U(1)_{B-L}$ extension of the MSSM. The capture and annihilation of sneutrinos inside the Sun reach equilibrium, and the flux of produced neutrinos is governed by the sneutrino-proton elastic scattering cross section, which has an upper bound of $8 \times 10^{-9}$ pb from the $Z^{\prime}$ mass limits in the $B-L$ model. Despite the absence of any spin-dependent contribution, the muon event rates predicted by this model can be detected at IceCube since sneutrinos mainly annihilate into leptonic final states by virtue of the fermion $B-L$ charges. These subsequently decay to neutrinos with 100% efficiency. The Earth muon event rates are too small to be detected for the standard halo model irrespective of an enhanced sneutrino annihilation cross section that can explain the recent PAMELA data. For modified velocity distributions, the Earth muon events increase substantially and can be greater than the IceCube detection threshold of 12 events $\mathrm{km}^{-2}$ $\mathrm{yr}^{-1}$. However, this only leads to a mild increase of about 30% for the Sun muon events. The number of muon events from the Sun can be as large as roughly 100 events $\mathrm{km}^{-2}$ $\mathrm{yr}^{-1}$ for this model.
description: 13 pages, 9 figures, replaced to match the published version, only minor changes: addition of one reference in section 5, correction of two typos
Additional file 1 of Longitudinal evolution of motor and non-motor symptoms in early-stage multiple system atrophy: a 2-year prospective cohort study
Creators: name: Zhang, Lingyu
name: Hou, Yanbing
name: Cao, Bei
name: Wei, Qianqian
name: Ou, Ruwei
name: Liu, Kuncheng
name: Lin, Junyu
name: Yang, Tianmi
name: Xiao, Yi
name: Chen, Yongping
name: Song, Wei
name: Zhao, Bi
name: Shang, Huifang
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Virology
subject: Computational Biology

description: Additional file 1: Table S1. Baseline demographics of MSA. Table S2. The comparison of frequency of each NMSS domain at baseline and 1- and 2-year follow-up.
title: Activities and Quality of Life for Persons with Dementia
Creators: name: Rose, Cassidy
Publisher: name: Utah State University
Year: 2017

description: This study was conducted to better understand how activities may impact quality of life on dementia care units. Researchers observed dementia care units, and looked into how different activity types impacted emotional affect in the person with dementia, and how they elicited different levels of positive staff interaction. Results indicated that there were significantly higher levels of positive affect from participants on certain activity types, compared to no activity. Activities that had high levels of staff to client interactions had more positive affective outcomes. Researchers concluded that quality activities should consider the environment, staff ratio, staff communication and interaction, engagement of clients, and adaptability of the activity to the individual interest and ability of client.
Technical Comments: Sea Level History
Creators: name: Christie-Blick, Nicholas
name: Mountain, Gregory S.
name: Miller, Kenneth G.
Publisher: name: Columbia University
Year: 1988
Subjects: Submarine geology
Remote sensing
Paleoclimatology

description: Bilal U. Haq and his co-workers have completed an important update of the chronology of coastal onlap and eustatic fluctuations in Mesowic and Cenowic time. Seismic stratigraphic results are augmented in the new charts by outcrop and well-log studies to document an impressive total of 119 sea level cycles since the beginning of the Triassic. In addition, the Cretaceous results have been published officially for the first time. However, apart from distinguishing between relative changes of coastal onlap and eustasy, the methodology and assumptions are much the same as those used to construct the first version of the "sea level curve" in 1977. In a recent evaluation of the seismic stratigraphic record of sea level change, we drew attention to two problems in particular. 1) All of the observed depositional cycles are assumed by Haq et al. to be eustatic. 2) The global onlap chart, which forms the basis for the smoothed eustatic curve, has little physical meaning.
Damping of a nanomechanical oscillator strongly coupled to a quantum dot
Creators: name: Bennett, Steven D.
name: Cockins, Lynda
name: Miyahara, Yoichi
name: Grütter, Peter
name: Clerk, Aashish A.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present theoretical and experimental results on the mechanical damping of an atomic force microscope cantilever strongly coupled to a self-assembled InAs quantum dot. When the cantilever oscillation amplitude is large, its motion dominates the charge dynamics of the dot which in turn leads to nonlinear, amplitude-dependent damping of the cantilever. We observe highly asymmetric lineshapes of Coulomb blockade peaks in the damping that reflect the degeneracy of energy levels on the dot, in excellent agreement with our strong coupling theory. Furthermore, we predict that excited state spectroscopy is possible by studying the damping versus oscillation amplitude, in analogy to varying the amplitude of an ac gate voltage.
description: 4+ pages, 4 figures
CMB Polarization and Theories of Gravitation with Massive Gravitons
Creators: name: Bessada, Dennis
name: Miranda, Oswaldo D.
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We study in this paper three different theories of gravitation with massive gravitons - the modified Fierz-Pauli (FP) model, Massive Gravity and the bimetric theory proposed by Visser - in linear perturbation theory around a Minkowski and a flat FRW background. For the TT tensor perturbations we show that the three theories give rise to the same dynamical equations and to the same form of the Boltzmann equations for the radiative transfer in General Relativity (GR). We then analyze vector perturbations in these theories and show that they do not give the same results as in the previous case. We first show that vector perturbations in Massive Gravity present the same form as found in General Relativity, whereas in the modified FP theory the vector gravitational-wave (GW) polarization modes ($Ψ_{3}$ amplitudes in the Newman-Penrose (NP) formalism) do not decay too fast as it happens in the former case. Rather, we show that such $Ψ_{3}$ polarization modes give rise to an unusual vector Sachs-Wolfe effect, leaving a signature in the quadrupole form $Y_{2,\pm 1}(θ,φ)$ on the CMB polarization. We then derive the details for the Thomson scattering of CMB photons for these $Ψ_{3}$ modes, and then construct the correspondent Boltzmann equations. Based upon these results we then qualitatively show that $Ψ_{3}$-mode vector signatures - if they do exist - could clearly be distinguished on the CMB polarization from the usual $Ψ_4$ tensor modes.
description: To appear in Classical and Quantum Gravity
BOSHLANG'ICH SINF MATEMATIKA DARSLARIDA HARAKATGA OID MASALALAR YECHISHNI O'RGATISH IMKONIYATLARI
Creators: name: Abdijabborova, Dinora
Publisher: name: Zenodo
Year: 2025

description: Matematika darslarida masalalarni yechishga oʻrgatish fanga boʻlgan qiziqishini orttiradi, mantiqiy fikrlashga o‘rgatadi, tasavvurni rivojlantiradi, shuning uchun bolalarni boshlang’ich maktabdan, hatto bogʻchadan eng oddiy masalalarni yechishga, uning mohiyatini tushunishga oʻrgatish kerak. Matnli masalalarni yechishda harakatga oid masalalar muhim o‘rinni egallaydi. Maqolada boshlang‘ich sinfdagi bir nechta harakatga oid masalalar  tahlili keltirilgan.