3,729 research outputs found
Effect of yeast culture (Yea-Sacc) supplementation on Italian dairy cow performance
No full textThe use of direct-fed microbials has been shown to enhance digestion in the ruminant. One source of a live microbial population is a yeast culture of Saccharomyces cerevisiae (Yea-Saccâ1206, CBS 493.94, EC5). The goal of the trial was to evaluate the influence of Yea-Saccâ1206 on dry matter intake of dairy cows fed a TMR under north-Italian conditions. Ninety eight Holstein dairy cows were randomly assigned for 150 days to one of two groups: (C) Control ration anf (YS) Control ration plus Yea-Saccâ1206 (5.61 x 107 CFU/kg of complete feedingstuff at 880 g DM). The control total mixed ration consisted of maize silage, alfalfa hay, alfalfa pellet, hulled sunflower, maize meal, cane molasses, extruded flax and minerals. The average analysis of the ration was: 62.5% dry matter; 16.5% crude protein; 16.1% crude fiber; 20.1% starch; 37.9% NDF; 19.8% ADF. The diet was distributed to the cows once a day in the morning. The quantity of feed offered and refused by each group was recorded daily. The YS group consumed on average significantly (P<0.10) more DM than the C group (respectively 24.29 vs 23.91 kg DM/cow/day). Interestingly, the difference in consumption could be considered in two time periods: - Summer period (June to August): YS increased intake by >1 kg DM in comparison with Controls (+ 5.54%; P<0.01); - The winter period (October to February): YS increased intake significantly (P<0.10) compared to controls. No differences were detected during the month of September, November, January, March and April. Intake was significantly increased over the whole period with better efficiency during the summer period, which typically entails a decrease in intake and production
Entanglement and quantity in quantum space - About quantum measurement (II)
No full textAs a continuation and extension of "quantity in phase space" "quantity in quantum space" is introduced. With that, the disappearing of quantum interference discussed in a previous paper [S. Durr, et al., Nature 395 (1998) 33] is explained in the same spirit as our recent papers [Ren De-Ming, Commun. Theor. Phys. (Beijing, China) 41 (2004) 685, 833].Physics, MultidisciplinarySCI(E)中国科学引文数据库(CSCD)1ARTICLE133-364
Sneutrino DM in the NMSSM with inverse seesaw mechanism
No full textIn supersymmetric theories like the Next-to-Minimal Supersymmetric Standard Model (NMSSM), the lightest neutralino with bino or singlino as its dominant component is customarily taken as dark matter (DM) candidate. Since light Higgsinos favored by naturalness can strength the couplings of the DM and thus enhance the DM-nucleon scattering rate, the tension between naturalness and DM direct detection results becomes more and more acute with the improved experimental sensitivity. In this work, we extend the NMSSM by inverse seesaw mechanism to generate neutrino mass, and show that in certain parameter space the lightest sneutrino may act as a viable DM candidate, i.e. it can annihilate by multi-channels to get correct relic density and meanwhile satisfy all experimental constraints. The most striking feature of the extension is that the DM-nucleon scattering rate can be naturally below its current experimental bounds regardless of the higgsino mass, and hence it alleviates the tension between naturalness and DM experiments. Other interesting features include that the Higgs phenomenology becomes much richer than that of the original NMSSM due to the relaxed constraints from DM physics and also due to the presence of extra neutrinos, and that the signatures of sparticles at colliders are quite different from those with neutralino as DM candidate.National Natural Science Foundation of China (NNSFC) [11575053]SCI(E)ARTICLE1
Classical mechanics and quantum mechanics
No full textThe Newton equation of motion is derived from quantum mechanics.Physics, MultidisciplinarySCI(E)中国科学引文数据库(CSCD)2ARTICLE5685-6884
Effects of selenium source and dose on selenomethionine and selenocysteine in milk of dairy cows.
No full textThe aim of this study (research funded by Alltech EU Regulatory Affairs Department,
trial ref. SEL/DAI/EFF/04/0107/IT; the authors would also like to give special thanks to
Ryszard Lobinski, UT2A laboratories, for performing the selenium analyses) was to
determine the effect of dietary Se source and dose on selenomethionine (SeMet) and
selenocysteine (SeCys) content of milk in dairy cows. The study involved 40 Italian
Friesian lactating cows in mid lactation in a randomized complete block design (5
treatments with 8 animals per group): during the 140-day experiment all animals received
the same basal diet, which differed only in Se source and dose: SY3 and SY5 (0.31 and
0.50 mg total Se/Kg DM respectively) containing organic Se (Se yeast) produced by
Saccharomyces cerevisiae CNCM I-3060 (Sel Plex®); SS3 and SS5 (0.31 and 0.50 mg
total Se/Kg DM respectively) containing inorganic Se obtained from sodium selenite;
CTRL as negative control (0.09 mg Se/Kg DM). Prior to the start of the study (T0), at 112
(T112) and 140 (T140) d, samples of milk were analyzed (one pooled milk of 8 samples per
treatment at T112; two pooled milk of 4 samples per treatment at T0 and at T140) to
determine the proportion of total Se comprised as SeMet and SeCys. At T140 the SeMet
content of milk was greater (P<0.001) in Se yeast supplemented animals (234 and 366 ng
Se/g DM in SY3 and SY5 respectively) than CTRL (93 ng Se/g DM), and than those
receiving comparable doses of selenite (96 and 112 ng Se/g DM in SS3 and SS5
respectively). A dose effect with Se yeast was also observed. Conversely, the SeMet
content of milk from selenite treatments at T140 did not differ from CTRL. Consequently
the proportion of total Se present as SeMet was greater (P<0.05) in Se yeast (56 and 60% of
total Se in SY03 and SY05 respectively) than selenite (37 and 40% in SS03 and SS05
respectively) and CTRL (44%). At T140 the SeCys content of milk was greater in Se yeast
supplemented animals (44 and 51 ng Se/g DM in SY3 and SY5 respectively) than selenite
supplemented (32 and 36 ng Se/g DM in SS3 and SS5 respectively). At T140 the
proportion of total Se present as SeCys was, on average, 13% of total Se, without
significant differences between treatments. These results indicate that increases in the total
Se content of milk obtained from Se yeast supplemented animals when compared to
selenite supplemented ones was principally a consequence of the increase in the proportion
of total Se present as SeMet, which accounted for 60% of total Se increase
Policy-driven Data Sharing over Attribute-Based Encryption supporting Dual Membership
No full textAttribute-Based Encryption (ABE) plays an important role in current secure data sharing through fine-grained customizable policies. However, the existing ABE schemes only support simple predicates, = and ≠, but cannot express a more general membership predicates, ∈ and ∉, in policies. The low expressivity of ABE will enlarge the ciphertext storage and reduce the communication efficiency. To overcome this problem, we propose an ABE supporting Dual Membership (DM-ABE). The core problem for implementing this scheme is how to use cryptographic methods to decide the membership between the verified element and the given set. In order to solve this problem, we design a cryptographic algorithm, called Secure Decision of Membership (SDM), based on aggregation functions. In this algorithm, any set can be aggregated into one cryptographic element, and the verified element and the given set can be converted into another cryptographic element in decision process. The membership between them can be decided by the above two cryptographic elements. Furthermore, we construct the DM-ABE by using SDM. Because of the good expressivity of our DM-ABE, we further propose a novel cryptographic data sharing framework by integrating DM-ABE and attribute-based access control to provide fine-grained access control and security protection for private data. In the security proof of DM-ABE, we prove that the DM-ABE satisfies the semantic security against chosen-plaintext attacks under the DBDHE assumption in the standard model through a unified way, considering both two encryption methods for ∈ and ∉ at the same time. Finally, we analyze our scheme in terms of time and space complexity, and compare it with some existing schemes. The results show that our DM-ABE has a better expressive ability on the boolean logic of general membership predicates, ∈ and ∉.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Cyber Securit
Constraining the Inner Galactic DM Density Profile with H.E.S.S.
No full text© 2024 by the author. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).In this short review, corresponding to a talk given at the conference “Cosmology 2023 in Miramare”, we combine an analysis of five regions observed by H.E.S.S. in the Galactic Center, intending to constrain the Dark Matter (DM) density profile in a WIMP annihilation scenario. For the analysis, we include the state-of-the-art Galactic diffuse emission Gamma-optimized model computed with DRAGON and a wide range of DM density profiles from cored to cuspy profiles, including different kinds of DM spikes. Our results are able to constrain generalized NFW profiles with an inner slope ≳1.3 . When considering DM spikes, the adiabatic spike is completely ruled out. However, smoother spikes given by the interactions with the bulge stars are compatible if ≲0.8 , with an internal slope of sp-stars=1.5.This work has been supported by the grants PID2021-125331NB-I00, PID2022-139841NB-I00, and CEX2020-001007-S, funded by MCIN/AEI/10.13039/501100011033, by “ERDF A way of making Europe”, and the MULTIDARK Project RED2022-134411-T. The author’s contribution to this work has been supported by the FPI Severo Ochoa PRE2021-099137 grant.With funding from the Spanish government through the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2020-001007-S).Peer reviewe
Diabetes mellitus (DM) related lower extremity amputations (LEA) rate and risk factors.
No full textAuthor: Ieva Vasiliūtė Title: Diabetes mellitus (DM) related lower extremity amputations (LEA) rate and risk factors. Aim: To investigate LEA rate and risk factors in patients with DM. Objectives: To evaluate DM related LEA rate. To determine DM related LEAs levels and patients demographic factors relation. To determine DM related LEAs levels and type of DM relation. To determine DM related LEAs levels and DM duration, body mass index (BMI), glycated hemoglobin (HbA1c) meanings relation. To evaluate expected mathematically based risk factors. Methods: Retrospective medical records study of 153 patients with DM, who underwent LEAs at the Hospital of Lithuanian University of Health Sciences Kaunas clinics was performed during the 2012 01 01 – 2014 12 31 period. Statistical analysis was performed using the standard SPSS 20.0 program. Results: 33,33% of legs amputations occured among people with DM and 66,67% of them were male (p<0,001). Major LEAs were performed mostly in patients with type 2 DM (86,96%) than those with type 1 DM (p<0,001). Male patients LEAs were performed in patients suffering for shorter duration of DM than in women (19,18 m. (±95% PI 16,71-21,65) vs. 23,36 m. (±95% PI 20,07-26,65), p=0,053). Patients with type 2 DM underwent LEAs had DM for shorter durations (16,19 m. (±95% PI 14,32-18,06)) than those with type 1 DM patients (31,43 m. (±95% PI 28,40-34,45)) ( p<0,001). Major LEAs remove patients had BMI (32,86±5,55 kg/m2) than minor LEAs remove patients (29,13±5,91 kg/m2) (p=0,027). No significant relation was found with amputation level and HbA1c average (p=0,246). DM related eye damage increases the risk of minor LEAs 3,10 times (p=0,001). Obesity/overweight the risk of major LEAs increases 5,65 times (p=0,036) and 2,56 times with obliterate atherosclerosis (p=0,006). Patients with type 2 DM have a 3,2 times (p=0,002) higher risk of undergoing major LEA. Conclusions: A third of patients who had undergone LEAs had DM. Amputations were carried out more frequently in men. DKA arose more often in patients with type 2 DM. LEAs were performed a shorter duration male DM patients. Type 2 DM patients suffered LEAs nearly 2 times shorter duration. Major LEAs experienced patients had a higher BMI. The average of HbA1c is not significantly related with amputation levels. DM related eye damage increases the minor LEAs risk by 3,10 times. Obesity/being overweight increases the risk of major LEAs 5,65 times, obliterate atherosclerosis - 2,56 times. Patients with type 2 DM have a 3,2 times higher risk of major LEA
The layer potential method in Schauder spaces for the analysis of Maxwell's equations in multiply connected domains
No full textreservedL’ambito di ricerca del lavoro di tesi è lo studio delle equazioni di di Helmortz e di Maxwell con il metodo delle rappresentazioni integrali.
Il primo obiettivo del lavoro è studiare l’esistenza e l’unicità delle soluzioni per l’equazione di Helmortz e di Maxwell all’interno e all’esterno di domini fissato un dato al bordo in domini a connessione multipla e nell’ambito degli spazi di Schauder migliorando i risultati classici presenti in letteratura.
Per prima cosa scriviamo le soluzioni come somme di potenziali le cui densita’ risolvono delle equazioni integrali i cui dati sono quelli del problema al contorno analizzato. Qui si prestera’ particolare attenzione al caso di domini in cui l’esterno abbia connessione multipla. Per analizzare la risolubilita’ delle equazioni integrali sono noti dei risultati di continuita’ e compattezza. Nella tesi si prevede di migliorarli, cominciando col trattare il caso in cui la frontiera e’ di classe C^{1, α}.
Piu’ precisamente si vogliono provare quei risultati che permetteranno poi di passare a studiare problemi di perturbazione singolare con metodi di tipo funzionale analitico come illustrato nella monografia:
Dalla Riva M., Lanza de Cristoforis M. and Musolino P. Singularly Perturbed Boundary Value Problems. A Functional Analytic Approach, Springer, Cham, xvi, 672 p., 2021
Approaches for Dialog Management in Conversational Agents
No full textDialog agents, like digital assistants and automated chat interfaces (e.g., chatbots), are becoming more and more popular as users adapt to conversing with their devices as they do with humans. In this paper, we present approaches and available tools for dialog management (DM), a component of dialog agents that handles dialog context and decides the next action for the agent to take. In this paper, we establish an overview of the field of DM, compare approaches and state-of-the-art tools in industry and research work on a set of dimensions, and identify directions for further research work.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Web Information SystemsHuman-Centred Artificial Intelligenc
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