Relationships among Agropyron, Dasypyrum and Lophopyrum (Triticeae: Poaceae) viewed from isoenzyme variation of esterase, peroxidase and acid phosphatase

Isoenzyme variation of esterase, peroxidase and acid phosphatase was examined in individual plants from natural populations of A. cristatum, D. villosum and L. elongatum. Four indices of phenotypic similarity (SI, S, D, Ih) were calculated in an attempt to assess relationships among the taxa studied. All indices have their lowest estimates in the comparison between L. elongatum and D. villosum. This is an indication that both species are most distantly related as judged by the enzymes surveyed. Although slightly higher, the values of SI, S and Ih show that D. villosum and A. cristatum are also positioned remotely. Dasypyrum. villosum possessed the highest number of diagnostic isoforms, which is an additional indicator of its distinctness within the studied group. The species A. cristatum and L. elongatum demonstrate a higher level of affinity as estimated by all indices used. The proposed relationships among Agropyron, Dasypyrum and Lophopyrum are compared with conclusions derived from morphological and molecular data available

Accurate large-signal equivalent circuit of surface channel diamond FETs based on the Chalmers model

The paper presents a large-signal nonlinear circuit-oriented model for polycrystalline and single-crystal H-terminated diamond MESFETs implemented within the Agilent ADS design suite. The DC characteristics of such devices suggest that the channel free charge control law may be modeled using the same strategy adopted for III-V HEMTs. For this reason, the well-known nonlinear Chalmers (Angelov) circuit model was chosen as the starting point for the development of the present non-linear diamond MESFET model. Model fitting was performed against DC and multibias small signal measurements, with good agreement. Model validations versus large-signal (power) measurements point out the accuracy of the proposed approach to simulate the behavior of H-terminated diamond MESFETs under large-signal operatio

Modelling DNA at the mesoscale: a challenge for nonlinear science?

Invited paper, in the series "Open Problems" of NonlinearityInternational audienceWhen it is viewed at the scale of a base pair, DNA appears as a nonlinear lattice. Modelling its properties is a fascinating goal. The detailed experiments that can be performed on this system impose constraints on the models and can be used as a guide to improve them. There are nevertheless many open problems, particularly to describe DNA at the scale of a few tens of base pairs, which is relevant for many biological phenomena

Transition Radiation Spectroscopy with Prototypes of the ALICE TRD

We present measurements of the transition radiation (TR) spectrum produced in an irregular radiator at different electron momenta. The data are compared to simulations of TR from a regular radiator.Comment: 4 pages, 5 Figures, Proceedings for "TRDs for the 3rd millennium" (Sept. 4-7, 2003, Bari, Italy

Spin physics with antiprotons

New possibilities arising from the availability at GSI of antiproton beams, possibly polarised, are discussed. The investigation of the nucleon structure can be boosted by accessing in Drell-Yan processes experimental asymmetries related to cross-sections in which the parton distribution functions (PDF) only appear, without any contribution from fragmentation functions; such processes are not affected by the chiral suppression of the transversity function $h_1(x)$. Spin asymmetries in hyperon production and Single Spin Asymmetries are discussed as well, together with further items like electric and magnetic nucleonic form factors and open charm production. Counting rates estimations are provided for each physical case. The sketch of a possible experimental apparatus is proposed.Comment: Presented for the proceedings of ASI "Spin and Symmetry", Prague, July 5-10, 2004, to be published in Czech. J. Phys. 55 (2005

Comparison approaches for identification of all-data cloud-based evolving systems

In this paper we deal with identification of nonlinear systems which are modelled by fuzzy rule-based models that do not assume fixed partitioning of the space of antecedent variables. We first present an alternative way of describing local density in the cloud-based evolving systems. The Mahalanobis distance among the data samples is used which leads to the density that is more suitable when the data are scattered around the input-output surface. All the algorithms for the identification of the cloud parameters are given in a recursive form which is necessary for the implementation of an evolving system. It is also shown that a simple linearised model can be obtained without identification of the consequent parameters. All the proposed algorithms are illustrated on a simple simulation model of a static system

WELLNESS PRACTICES FOR HEALTHY AGING

Anti-aging practices refer to a set of measures, products, and activities aimed at reducing the visible signs of aging. There are two types of procedures that exist, with one aimed at producing beauty effects and the other focused on reflecting the state of health balance. Both types of procedures are directly related to the Wellness lifestyle. These practices have gained popularity over the years due to the desire to maintain a youthful appearance and improve overall health and wellness. The findings of a unique investigation on the effects of chiropractic care in conjunction with natural remedies are presented in this publication. A Wellness lifestyle is essential to achieving aesthetic beauty. Therefore anti-aging techniques are crucial for preserving a young appearance and advancing general wellness. A nutritious diet, regular chiropractic adjustments, a good night's sleep, and stress reduction techniques can all work together to reduce the aging process and enhance overall quality of life. A nutritious diet, regular chiropractic adjustments, a good night's sleep, and stress reduction techniques can all work together to reduce the aging process and enhance overall quality of life

Indirect Exchange Interactions in Orthorhombic Lanthanide Aluminates

Magnetic exchange interactions in orthorhombic lanthanide monoaluminates LnAlO3, Ln = SmYb have been determined semiempirically within the Anderson model of exchange in insulators. The constants of magnetic exchange have been evaluated assuming indirect exchange between pairs of nearest Ln 3+ Ln 3+ ions via 4f n → 4f n−1 5d excitation and ionic polarization. The transfer integrals have been approximated by two-centre overlap integrals between four-term analytical 4f n radial wave functions of Ln 3+ ions. The results have been compared with the available experimental Néel temperatures in the same compounds. It has been found that in most cases the indirect exchange interactions present substantial contributions to the energy of the antiferromagnetically ordered state in LnAlO3