623 research outputs found

    Short communication: Effects of different protein sources on growth performance and food consumption of goldfish, Carassius auratus

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    Protein is one of the most important components in a fish diet. In aquaculture, the primary dietary animal protein source is fish meal, but its availability is limited and supply varies because of reductions in fish stocks related to factors such as climatic phenomena, and overexploitation and decline of ocean fisheries stocks. This variability can seriously affect aquaculture sustainability and provability, and therefore research in identifying alternative dietary protein sources has increased. Fish nutritionists have tried to use less expensive plant protein sources to partially or totally replace fish meal. ... The purpose of this study was to investigate food consumption and growth performance of goldfish fed diets containing only plant, only animal and plant-animal (50%-50%) derived protein source

    Pancytopenýa and Sepsýs due to Meropenem: A Case Report

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    Meropenem is one of the most commonly used antibacterial agents with relatively few side effects. Serious adverse reactions reported with meropenem are rare with an incidence of 1 %. Recently we came across two rare adverse effects of meropenem in one patient with acute renal failure. There was pancytopenia and sepsis, respectively. To the best of ourknowledge, a only few cases have been reported in the literature that document an association between meropenem administration and pancytopenia, and about half of these cases were sepsis. With the use of meropenem becoming more widespread, these two rare but fatal complications of meropenem should be borne in mind.Keywords: Meropenem, Pancytopenia, Sepsis, Fatal complication

    Effects of strip and full-width tillage on soil carbon IV oxide-carbon (CO2-C) fluxes and on bacterial and fungal populations in sunflower

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    In strip tillage system, planting lines are cultivated while the inter-row spaces are left undisturbed. The objective of this study is to determine the effects of strip tillage and full-width tillage treatments on soil carbon IV oxide-carbon (CO2-C) fluxes, bacterial and fungal populations in growing period of sunflower (Helianthus annus). A row-crop rotary hoe with C type blades was used to create three strip widths by changing the connection of blades of the rotary hoe on the flanges. Strip widths were 22.5 (T30), 30.0 (T40) and 37.5 cm (T50). The full-width tillage practice (moldboard plow + disc harrow + leveler) gave 100% surface soil disturbance (T100) and was included in the experiment to make comparisons with the strip tillage system. A randomized complete block design with three replications was used. During the growth of the sunflower, periodic measurements of CO2-C fluxes and bacterial and fungal populations were made. Significant (p < 0.01) differences in CO2-C fluxes, microbial populations, soil bulk density and total porosity were observed between the different tillage systems. Highest CO2-C fluxes, bacteria populations and total porosity were observed in the full-width T100 application and the lowest values were observed in the T30 treatment during flowering and harvesting periods. Increasing tillage intensity increased soil CO2-C fluxes and bacteria population, but decreased fungi population and soil bulk density.Key words: Carbon IV oxide-carbon flux, soil bacteria and fungi, strip tillage, full-width tillage, sunflower

    ELECTRE I Method Using Hesitant Linguistic Term Sets: An Application to Supplier Selection

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    Decision making is a common process in human activities. Every person or organization needs to make decisions besides dealing with uncertainty and vagueness associated with human cognition. The theory of fuzzy logic provides a mathematical base to model the uncertainities. Hesitant fuzzy linguistic term set (HFLTS) creates an appropriate method to deal with uncertainty in decision making. Managerial decision making generally implies that decision making process conducts multiple and conflicting criteria. Multi criteria decision analysis (MCDA) is a widely applied decision making method. Outranking methods are one type of MCDA methods which facilitate the decision making process through comparing binary relations in order to rank the alternatives. Elimination et Choix Traduisant la Réalité (ELECTRE), means elimination and choice that translates reality, is an outranking method. In this paper, an extended version of ELECTRE I method using HFLTS is proposed. Finally, a real case problem is provided to illustrate the HFLTS-ELECTRE I method

    Antimicrobial studies on three Hypericum species from Turkey

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    The antimicrobial activity of several extracts and fractions of some Hypericum species (H. rupestre Jaub. & Spach, H. vacciniifolium Hayek & Siehe and H. imbricatum Poulter) was investigated using the disc diffusion method against Escherichia coli ATCC 11230, Staphylococcus aureus ATCC 6538P, Klebsiella pneumoniae UC57, Micrococcus luteus La 2971, Bordetella bronchiseptica ATCC 19395, Proteus vulgaris ATCC 8427, Pseudomonas aeruginosa ATCC 27853, Corynebacterium xerosis CCM 7064, Mycobacterium smegmatis CCM 2067, Bacillus subtilis ATCC 6633, Aeromonas hydrophila ATCC 49803, Candida albicans ATCC 10231, Saccharomyces cerevisiae ATCC 9730, Kluyveromyces fragilis NRRL 2415 and Rhodotorula rubra CCY. The methanol extract and chloroform fraction of H. vacciniifolium, as well as the methanol extracts, butanol and chloroform fractions of both H. rupestre and H. imbricatum, showed good antimicrobial activity against especially Gram-positive bacteria and the Gram-negative bacterium Bordetella bronchiseptica. The methanol extracts and fractions did not have antifungal activity. The results of the study support the use of these specimens in Turkish traditional medicine to treat skin and eye infections

    Joint Astrophysics Nascent Universe Satellite:. utilizing GRBs as high redshift probes

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    The Joint Astrophysics Nascent Universe Satellite (JANUS) is a multiwavelength cosmology mission designed to address fundamental questions about the cosmic dawn. It has three primary science objectives: (1) measure the massive star formation rate over 5 ≤ z ≤ 12 by discovering and observing high-z gamma-ray bursts (GRBs) and their afterglows, (2) enable detailed studies of the history of reionization and metal enrichment in the early Universe, and (3) map the growth of the first supermassive black holes by discovering and observing the brightest quasars at z ≥ 6. A rapidly slewing spacecraft and three science instruments – the X-ray Coded Aperture Telescope (XCAT), the Near InfraRed Telescope (NIRT), and the GAmma-ray Transient Experiment for Students (GATES) – make-up the JANUS observatory and are responsible for realizing the three primary science objectives. The XCAT (0.5–20 keV) is a wide field of view instrument responsible for detecting and localizing ∼60 z ≥ 5 GRBs, including ∼8 z ≥ 8 GRBs, during a 2-year mission. The NIRT (0.7–1.7 µm) refines the GRB positions and provides rapid (≤ 30 min) redshift information to the astronomical community. Concurrently, the NIRT performs a 20, 000 deg2 survey of the extragalactic sky discovering and localizing ∼300 z ≥ 6 quasars, including ∼50 at z ≥ 7, over a two-year period. The GATES provides high-energy (15 keV −1.0 MeV) spectroscopy as well as 60–500 keV polarimetry of bright GRBs. Here we outline the JANUS instrumentation and the mission science motivations

    Symmetry Violation of Quantum Multifractality: Gaussian fluctuations versus Algebraic Localization

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    Quantum multifractality is a fundamental property of systems such as non-interacting disordered systems at an Anderson transition and many-body systems in Hilbert space. Here we discuss the origin of the presence or absence of a fundamental symmetry related to this property. The anomalous multifractal dimension Δq\Delta_q is used to characterize the structure of quantum states in such systems. Although the multifractal symmetry relation \mbox{Δq=Δ1q\Delta_q=\Delta_{1-q}} is universally fulfilled in many known systems, recently some important examples have emerged where it does not hold. We show that this is the result of two different mechanisms. The first one was already known and is related to Gaussian fluctuations well described by random matrix theory. The second one, not previously explored, is related to the presence of an algebraically localized envelope. While the effect of Gaussian fluctuations can be removed by coarse graining, the second mechanism is robust to such a procedure. We illustrate the violation of the symmetry due to algebraic localization on two systems of very different nature, a 1D Floquet critical system and a model corresponding to Anderson localization on random graphs.Comment: Closest to published versio

    Bare electrodynamic tether ground simulations in a dense, high-speed plasma flow

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/76307/1/AIAA-2000-3869-300.pd

    Properties of Modified Riemannian Extensions

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    Let M be an n-dimensional differentiable manifold with a symmetric connection ∇ and T*M be its cotangent bundle. In this paper, we study some properties of the modified Riemannian extension ğ∇, c on T*M defined by means of a symmetric (0, 2)-tensor field c on M. We get the conditions under which T*M endowed with the horizontal lift HJ of an almost complex structure J and with the metric ğ∇, c is a Kähler-Norden manifold. Also curvature properties of the Levi-Civita connection of the metric ğ∇, c are presented.Пусть M - n-мерное дифференцируемое многообразие с симметричной связностью ∇ а T*M - его кокасательное расслоение. В статье изучены некоторые свойства модифицированного риманова расширения ğ ∇, c на T*M, которое определяется с помощью симметричного (0, 2)-тензорного поля c на M. Получены условия, при которых T*M, наделенное горизонтальным лифтом HJ почти комплексной структуры J и метрикой ğ∇, c, является многообразием Kэлера-Нордена. Также представлены свойства кривизны связности Леви- Чивита метрики ğ ∇ , c.Нехай M — n-мірний диференційовний многовид із симетричного зв'язністго ∇, а T*M — його кодотичне розшарування. В статті вивчено деякі властивості модифікованого ріманова розширення ğ ∇, c на T*M, яке визначається за допомогою симетричного (0, 2)-тензорного поля с на М. Отримано умови, за яких T*M, наділене горизонтальним ліфтом HJ майже комплексної структури J і метрикого ğ∇, c, є многовидом Келера-Нордена. Також представлені властивості кривини зв'язності Леві-Чівіти метрики ğ∇, c
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