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Coltivazione di officinali con tecniche ecocompatibili
2006
Per valutare l'effetto di alcune pratiche agronomiche adoperate in biologico, su tre piante officinali mediterranee sono stati sperimentati fertilizzanti organici e pratiche di gestione non chimica della flora infestante
Exploring the apparent properties and Q-markers for quality control of Cornus officinalis
2023
Cornus officinalis Siebold & Zucc. has a high nutritious value and is widely used in food fields. To distinguish the quality of cornus in different areas, this research provided a new strategy for comprehensively evaluating cornus. As a result, 12 iridoid glycosides and 7 polyphenols were identified and quantified by UHPLC-Q-TOF/MS in 13 batches of samples from five different origins. Chromaticity analysis pointed out that pelargonidin-3-O-galactoside, total iridoids, and total polyphenols performed high relation with 1365*. Antioxidant activity and inhibition of α-glucosidase effect correlated with the chemical analysis suggested that iridoid glycosides and polyphenols should represent…
The Role of Institutions in the Migration of Corporate Governance Practice into Emerging Economies The Case of Africa
2016
This study examines the role of institutional environment in influencing the migration of corporate governance best practice into 22 emerging African economies. Using a unique and comprehensive sample hand-collected sample of 202 IPO firms from across the continent we adopt a novel institutional logics perspective in studying the diffusion of CEO salary disclosure – a central element of corporate transparency. Our findings reveal that the adoption of CEO salary disclosure by firms is more likely in more homogenous informal institutional contexts. Complementarities arising from disclosure originating from an Anglo-American shareholder value governance framework and indigenous formal institut…
Corporazioni, maestranze e mestieri d’arte a Palermo al tempo di Giacomo Amato (1643-1732)
2017
Ci si sofferma sull'attività poliedrica delle varie corporazioni e maestranze palermitane il cui operato, tra la seconda metà del XVII e i primi decenni del secolo successivo, è affiancato dall'estro creativo di Giacomo Amato e da altre emergenti personalità che incisero notevolmente nel rinnovamento artistico della città di Palermo.
A synthesis of feasible control methods for floating offshore wind turbine system dynamics
2021
Abstract During the past decade, the development of offshore wind energy has transitioned from near shore with shallow water to offshore middle-depth water regions. Consequently, the energy conversion technology has shifted from bottom-fixed wind turbines to floating offshore wind turbines. Floating offshore wind turbines are considered more suitable, but their cost is still very high. One of the main reasons for this is that the system dynamics control method is not well-adapted, thereby affecting the performance and reliability of the wind turbine system. The additional motion of the platform tends to compromise the system’s performance in terms of power maximization, power regulation, an…
Marketing communication for the company`s „Es mīlu kafiju” and „Costa Coffee Latvia” during Covid-19
2021
Bakalaura darba „Uzņēmumu „Es mīlu kafiju” un „Costa Coffee Latvia” mārketinga komunikācija Covid-19 laikā” mērķis ir noskaidrot un salīdzināt, kā mainījās uzņēmumu „Es mīlu kafiju” un „Costa Coffee Latvia” mārketinga komunikācija, sākoties Covid-19 ierobežojumiem valstī. Darba teorētiskajā daļā ir apkopota un izstudēta informācija par mārketingu, mārketinga un uzņēmumu komunikāciju. Par sociālajiem medijiem un to lomu mārketingā, kā arī komunikāciju tajos. Par zīmolu, zīmola atpazīstamību un identitāti. Un par komunikāciju Covid-19 laikā. Bakalaura darba empīriskajā daļā tika izmantotas trīs pētījuma metodes: kontentanalīze, intervija un aptauja. Bakalaura darba pētījumi norāda uz to, ka v…
Características de las costras físicas y biológicas del suelo con mayor influencia sobre la infiltración y la erosión en ecosistemas mediterráneos
2010
28 páginas, 4 figuras, 5 tablas.
Exact Coulomb cutoff technique for supercell calculations in two dimensions
2009
We present a reciprocal space technique for the calculation of the Coulomb integral in two dimensions in systems with reduced periodicity, i.e., finite systems, or systems that are periodic only in one dimension. The technique consists in cutting off the long-range part of the interaction by modifying the expression for the Coulomb operator in reciprocal space. The physical result amounts in an effective screening of the spurious interactions originated by the presence of ghost periodic replicas of the system. This work extends a previous report [C. A. Rozzi et al., Phys. Rev. B 73, 205119 (2006)], where three-dimensional systems were considered. We show that the use of the cutoffs dramatic…
Limits on anomalous trilinear gauge boson couplings from WW, WZ and Wγ production in pp¯ collisions at s=1.96 TeV
2012
We present searches for the anomalous γWW and ZWW trilinear gauge boson couplings from WW and WZ production using lepton plus dijet final states and a combination with results from Wγ, WW, and WZ production with leptonic final states. The analyzed data correspond to up to 8.6fb -1 of integrated luminosity collected by the D0 detector in pp- collisions at s=1.96TeV. We set the most stringent limits at a hadron collider to date assuming two different relations between the anomalous coupling parameters δκ γ, λ, and δg1Z for a cutoff energy scale Λ=2TeV. The combined 68% C.L. limits are -0.057lδκ γl0.154, -0.015lλl0.028, and -0.008lδg1Zl0.054 for the LEP parameterization, and -0.007lδκl0.081 an…
Eta-eta' Photoproduction and the axial isoscalar neutral current coupling
1995
We show that coherentη andη′ photoproduction by means of the Primakoff Effect on the proton depends on the strange component of the neutral axial current coupling. We construct polarization asymmetries that are sensitive to this coupling through theγ−Z interference. Theη′ is not a Goldstone boson of a spontaneously broken chiral symmetry, but a phenomenological analysis of theη andη′ production through chiral perturbation theory allows to calculate the observables of interest. The polarized proton or polarized photon asymmetries are predicted to be close to 10−4 for −q 2∼0.1−0.5 GeV2.