11,604 research outputs found
Corrections to Tribimaximal Mixing from Nondegenerate Phases
We propose a seesaw scenario that possible corrections to the tribimaximal
pattern of lepton mixing are due to the small phase splitting of the
right-handed neutrino mass matrix. we show that the small deviations can be
expressed analytically in terms of two splitting parameters( and
) in the leading order. The solar mixing angle favors a
relatively smaller value compared to zero order value (), and the
Dirac type CP phase chooses a nearly maximal one. The two Majorana
type CP phases and turn out to be a nearly linear dependence.
Also a normal hierarchy neutrino mass spectrum is favored due to the stability
of perturbation calculations.Comment: 19 pages 6 figures, Accepted by Mod. Phy. Lett.
Left-Right Asymmetry of Weak Interaction Mass of Polarized Fermions in Flight
The left-right polarization-dependent asymmetry of the weak interaction mass
is investigated. Based on the Standard Model, the calculation shows that the
weak interaction mass of left-handed polarized fermions is always greater than
that of right-handed polarized fermions in flight with the same velocity in any
inertial frame. The asymmetry of the weak interaction mass might be very
important to the investigation of neutrino mass and would have an important
significance for understanding the parity nonconservation in weak interactions.Comment: 8 pages, 2 figures, corrected calculatio
Neutrino Factories: Physics Potential
The physics potential of low-performance and high-performance neutrino
factories is briefly reviewed..Comment: Talk presented at NUFACT02, London, 1-6 July, 2002. 8 pages, 5
figure
Papillae associated with the spinneret in some soil nematodes
This article does not have an abstract
Molybdenumisotopes in plume-influenced MORBs reveal recycling of ancient anoxic sediments
Under modern oxidising Earth surface conditions, dehydrated subducted slabs show
Mo isotope compositions as low as δ98/95Mo = −1.5 ‰, compared to the depleted
mantle δ98/95Mo = −0.2 ‰. Such light Mo isotope compositions reflect the redoxdependent
aqueous mobility of isotopically heavy Mo associated with slab dehydration.
Here we analysed basaltic glasses from the South-Mid Atlantic Ridge, whose
parental melts are influenced by the enriched Discovery and Shona mantle plumes.
We report increasingly higher δ98/95Mo of up to −0.1‰from the most depleted samples
towards those tapping more enriched mantle sources. δ98/95Mo values correlate
with radiogenic Sr and Nd isotopes, which indicates the recycling of Proterozoic sediments
with a Mo isotopic composition that was not affected by subduction-related,
oxic dehydration. We propose that the Mo isotope signatures were retained during subduction and reflect anoxic conditions
during deep sea sedimentation in the mid-Proterozoic. Finally, Mo isotope fractionation between different terrestrial reservoirs
likely depends on the slab redox budget, and therefore on the timing of subduction with regard to Earth’s surface oxygenation.Swiss National Science Foundation (SNSF) 1NF40-141881
Swiss National Science Foundation (SNSF)European Commission 636808European Research Council (ERC) RYC2020-030014-ISpanish Government
18250
Enterprise Systems and Intraorganizational Interdependence: A Task-Technology Fit Perspective
UAV-Empowered Disaster-Resilient Edge Architecture for Delay-Sensitive Communication
The fifth-generation (5G) communication systems will enable enhanced mobile
broadband, ultra-reliable low latency, and massive connectivity services. The
broadband and low-latency services are indispensable to public safety (PS)
communication during natural or man-made disasters. Recently, the third
generation partnership project long term evolution (3GPPLTE) has emerged as a
promising candidate to enable broadband PS communications. In this article,
first we present six major PS-LTE enabling services and the current status of
PS-LTE in 3GPP releases. Then, we discuss the spectrum bands allocated for
PS-LTE in major countries by international telecommunication union (ITU).
Finally, we propose a disaster resilient three-layered architecture for PS-LTE
(DR-PSLTE). This architecture consists of a software-defined network (SDN)
layer to provide centralized control, an unmanned air vehicle (UAV) cloudlet
layer to facilitate edge computing or to enable emergency communication link,
and a radio access layer. The proposed architecture is flexible and combines
the benefits of SDNs and edge computing to efficiently meet the delay
requirements of various PS-LTE services. Numerical results verified that under
the proposed DR-PSLTE architecture, delay is reduced by 20% as compared with
the conventional centralized computing architecture.Comment: 9,
Two new species of Plectidae from India (Nematoda : Araeolaimida)
Deux nouvelles espèces de #Plectidae sont décrites et illustrées. #Tylocephalus palmatus n. sp. présente les caractères suivants : L = 0,41-0,61 mm; a = 14-18; b = 3,6-4,3; c = 13,1-13,9; V = 42-49. Cette nouvelle espèce est proche de #T. auriculatus (Buetschli, 1873) Anderson, 1966 et de #T. andinus Zell, 1993. #Plectus refusus n. sp. présente les caractères suivants : L = 0,38-0,44 mm; a = 18-26; b = 3,08-3,93; c = 6,25-8,65; V = 41-53. Cette nouvelle espèce est proche de #P. geophilus de Man, 1880. (Résumé d'auteur
Description and developmental biology of Plectus zelli n.sp. (Nematoda : Araeolaimida)
Plectus zelli n. sp. is described and illustrated. It is closely related to P. opisthocirculus Andrassy, 1952 and P. inquirendus Andrassy, 1958, and also to P. sambesii Micolctzky, 1916. It has L = 0.57-0.83 mm, a = 18-26, b = 3.5-5.0, c = 8-13, V = 45-56; a continuous lip region, cephalic setae not reaching the apex of the cephalic region and paired lateral alae. P. zelli n. sp. reproduces by parthenogenesis, its embryonation time varies from 18-20 h. The first stage juveniles have paired primordia each of which form one sexual branch. The flexure in the ovary is formed at the time of the fouruh and final moulting. The total duration of life cycle from egg to adult is 7 to 9 days at 28 ± 2 °C
- …