178,823 research outputs found
Domestication process of two Solanum (section Lasiocarpa) species among Amerindians in the Upper Orinoco, Venezuela with special focus on Piaroa indians
No full textVolpato, Gabriele, Rossella Marcucci, Noemi Tornadore, and Maurizio G. Paoletti (Department
of Biology, University of Padua, 325100 Padova, Italy; email corresponding author:
[email protected]). DOMESTICATION PROCESS OF TWO SOLANUM SECTION LASIOCARPA SPECIES
AMONG AMERINDIANS IN THE UPPER ORINOCO, VENEZUELA, WITH SPECIAL FOCUS ON PIAROA
INDIANS. Economic Botany 58(2):000–000, 2004. Two semi-cultivated Solanum species (S. sessiliflorum
Dunal and S. stramonifolium Jacq.) are utilized by the Amazonian Indians of the
Upper Orinoco Basin in Venezuela. The manner by which they have become partially domesticated
by the Piaroas and other native tribes of this rain forest region is elucidated in the
following text. Both species have two varieties, with and without prickles, the latter the result
of human selection. Patterns of indigenous utilization of these species by the selection of morphologic
forms and to the differentiation of karyotypes of varieties, and exploitation of the
species reflects also in the perception of them among users. S. sessiliflorum is cultivated in
swiddens and has an economic role, whereas S. stramonifolium is grown in dooryards. This
difference is detectable to the Piaroas, as they recognize in their folk taxonomy three different
varieties of the S. sessiliflorum and one of S. stramonifolium, this according to the stage of
domestication of the species and the way in which they are utilized
Knowledge Registration Module Design for Enterprise Resilience Enhancement
No full text[EN] The present situation characterized by the coronavirus pandemic has made businesses to be aware about the importance of being resilient to face undesirable impacts like the one caused by this pandemic. One of the constituent capacities of enterprise resilience is the recovery ability to bounce back and restore the operations after disruptions¿ occurrence. This paper is focused on the recovery perspective of enterprise resilience and its enhancement through knowledge registration. This research proposes the design of the Knowledge Registration Module addressed to the register of valuable information at different knowledge level with the main aim to reuse this piece of information to facilitate the recovery process when the same or an unexpected similar disruptive event occurs. Future research lines will be based on applying the knowledge approach to real cases to study the influence of knowledge management in the enhancement of enterprise resilience.This research was supported by the Programme to support the academic career of the faculty of the Universitat Politecnica de Valencia 2019/2020 as part of Project 'Enterprise and Supply Chain Resilience Enhancement' granted to Dr. Raquel Sanchis, who wishes to thank Universita Politecnica delle Marche, particularly the Department of Industrial Engineering and Mathematical Science, for its support, during her stay, to conduct the present research.Sanchis, R.; Marcucci, G.; Alarcón Valero, F.; Poler, R. (2021). Knowledge Registration Module Design for Enterprise Resilience Enhancement. IFAC-PapersOnLine. 54(1):1029-1034. https://doi.org/10.1016/j.ifacol.2021.08.122S1029103454
Suramin induces deoligomerization of human tumor necrosis factor alpha
No full text: Suramin inhibits the biological activity of human tumor necrosis factor alpha (TNF) through a direct action on the ligand rather than on its receptors (Grazioli, L., Alzani, R., Ciomei, M., Mariani, M., Restivo, A., Cozzi, E., and Marcucci, F. (1992) Int. J. Immunopharmacol. 14, 637-642). In order to clarify the mechanism whereby suramin leads to inhibition of TNF, we investigated the possibility that suramin might modify the quaternary structure of TNF which is biologically active as a trimer. For this purpose we used a new assay (double streptavidin sandwich assay) designed for the rapid detection of oligomer-monomer conversion of proteins. Taking advantage of this assay we observed, upon incubation with suramin, dissociation of TNF. Suramin-induced dissociation of TNF was confirmed by gel filtration chromatography. Under conditions of partial dissociation, two molecular species were separated. One of higher molecular weight, corresponding to trimeric TNF, was biologically active, whereas the other, corresponding to monomeric TNF, was inactive. These results are at variance with others recently reported, where suramin has been shown to induce microaggregation of several polypeptides (Middaugh, C. R., Mach, H., Burke, C. J., Volkin, D. B., Dabora, J. M., Tsai, P. K., Bruner, M. W., Ryan, J. A., and Marfia, K. E. (1992) Biochemistry 31, 9016-9024). This suggests that suramin inhibits the bioactivity of different protein molecules through opposite effects on their quaternary structure. The present results are, to our knowledge, the first demonstration of a drug inhibiting a target molecule through dissociation of its quaternary structure
Attribute cut-offs in freight service selection
No full textThe paper applies the choice model incorporating attribute cut-offs proposed by [Swait, J.D., 2001. A non-compensatory choice model incorporating attribute cutoffs. Transportation Research: Part B 35 (10), 903–928] to evaluate shippers’ preferences for freight service attributes. A stated preference experiment on a sample of Italian manufacturing firms shows that the marginal utilities of attributes are not constant over the whole range of values presented, and that significant improvements can be made by introducing non-linearities at points specified by individual respondents. It is found that the conventional model overestimates the importance of the attributes, though their relative ranking is maintained. The proposed choice model provides useful information on the difficulty of achieving a modal transfer of freight from road to truck-rail intermodal transport
A framework proposal for research into silver labour from a resilient perspective
No full text[EN] Currently, enterprises face changes in the labour structure, determined by demographic factors. Population ageing in Europe is a relevant issue that has to be carefully analysed to be prepared and adapt European aspects and conditions to today¿s generation. In light of this, the present paper proposes a framework as a first attempt to support enterprises in their management of the workforce age increasing average from a resilient perspective. The framework was built based on three constituent capacities of enterprise resilience: preparedness, adaptive, recovery capacities. For each one, research macro-areas and enterprise features were identified. Further research lines will focus on validating this framework and on extending its development to include specific actions.This research was supported by the Programme to support the
academic career of the faculty of the Universitat Politècnica
de València 2019/2020 as part of Project Enterprise and
Supply Chain Resilience Enhancement granted to Dr.
Raquel Sanchis, who wishes to thank Università Politecnica
delle Marche, particularly the Department of Industrial
Engineering and Mathematical Science, for its support,
during her stay, to conduct the present research. This research
was also supported partly by the Spanish Ministry of Science,
Innovation and Universities Project entitled Optimisation of
zero-defects production technologies enabling supply chains
4.0 (CADS4.0) (RTI2018-101344-B-I00).Sanchis, R.; Mula, J.; Marcucci, G.; Bevilacqua, M. (2021). A Framework Proposal for Research into Silver Labour from a Resilient Perspective. IFAC-PapersOnLine. 54(1):930-935. https://doi.org/10.1016/j.ifacol.2021.08.189S93093554
Centri urbani di distribuzione delle merci e politiche del traffico: una valutazione empirica tramite le preferenze dichiarate
No full textMuon Capture on H
No full textThe μ-+H3→νμ+n+n+n capture reaction is studied under full inclusion of final-state interactions. Predictions for the three-body breakup of H3 are calculated with the AV18 potential, augmented by the Urbana IX three-nucleon force. Our results are based on the single-nucleon weak-current operator comprising the dominant relativistic corrections. This work is a natural extension of our investigations of the μ-+He3→νμ+H3,μ-+He3→νμ+n+d and μ-+He3→νμ+n+n+p capture reactions presented in Golak et al. [J. Golak, R. Skibiński, H. Witała, K. Topolnicki, A. E. Elmeshneb, H. Kamada, A. Nogga, and L. E. Marcucci, Phys. Rev. C 90, 024001 (2014)]PRVCAN0556-281310.1103/PhysRevC.90.024001
Bottolneck Congestion and Modal Split Revisited,Fondazione Eni Enrico Mattei, Nota di Lavoro
No full textInterazioni tra gli agenti e modelli a scelta discreta: una analisi della letteratura con una applicazione preliminare
No full textCentri urbani di distribuzione delle merci e politiche del traffico: una valutazione empirica tramite le preferenze dichiarate
No full text- …
