Role of final state interaction and of three-body force on the longitudinal response function of 4He

We present an ab-initio calculation of the longitudinal electron scattering response function off 4He with two- and three-nucleon forces and compare to experimental data. The full four-body continuum dynamics is considered via the Lorentz integral transform method. The importance of the final state interaction is shown at various energies and momentum transfers q. The three-nucleon force reduces the quasi-elastic peak by 10% for q between 300 and 500 MeV/c. Its effect increases significantly at lower q, up to about 40% at q=100 MeV/c. At very low q, however, data are missing.Comment: 4 pages, 3 figures, corrected typos, shorter versio

Comparative Analysis of the Quality of the Shallow and Deep Aquifer Waters of Nsukka SE, Nigeria – A Preliminary Approach to Water Resource Development

Comparative analysis of the shallow and deep aquifers of Nsukka SE, Nigeria was studied as a preliminary approach for the underground  water resource development of the region.  Method of approach involves the identification of rock formations and delineation of their stratigraphic  relationships. Activities involved collection and analysis of water samples from boreholes and hand dug wells. A total of 14  water samples were collected (7 from shallow and deep aquifer each) and analyzed  for inorganic and organic components. Ca2+, Na+, Mn2+, Cl-, Pb and Cd were analyzed  using Atomic absorption spectroscopy. K+ was determined using flame photometer method. Copper Cu2+ was analyzed  using spectrophotometer, pH  was analyzed with the aid of pH  meter, Fe2+ was  determined calorimetrically using Spekker absorption meter; Tds was determined using glass fiber filter. Turbimetric method was used to assess turbidity. Anions like HCO3- were also estimated by titrimetric  method. Coliform analysis was carried out by the most probable number technique (MPN). The result shows that average pH  for deep and shallow aquifer gives 5.8 and 6.3, sulphate 14.2 and 10.97, Nitrate 2.5 and 2.2., Phosphate 1.48 and 1.68, iron 1.98 and 1.60 magnesium 11.4 and 11.8, Sodium 1.80 and 2.4, Chloride 8.4 and  9, Tds 33.51 and 62.17. The coliform count ranges from 3/100 to 7/100 ml only for shallow aquifer (pollution), magnesium is the major  contributors of hardness in both cases.  Deep aquifer water plots as magnesium cation and a no dominant anion and on the transition between fresh and salt water (brackish water). The shallow aquifer has magnesium sulphate and plots in the zone of sea water, and shows hard water. The SAR for deep aquifer is 0.58, while that of shallow aquifer is 0.32 both are excellent for irrigation. Both waters are ideal for use in industries and homes, while the aquifers are highly polluted by iron, the shallow aquifer is polluted by water  borne diseases. Reference to these information is ideal for the water resource development of the region. Keywords: Aquifers, Comparison, water quality, Nsukka SE, Anambra basin  SE Nigeri

Internationalization strategy of Quinta dos Termos to China

The underlying project was carried out with the purpose of conducting an internationalization strategy of Quinta dos Termos to China. Thus, this project focuses on exploiting the competitive advantages resources of the firm, followed by China ranking analysis and then selecting the most suitable city, in this case Hong Kong. Furthermore, an implementation strategy is suggested with the most optimal mode of entry and several of activities for a successful internationalization to Hong Kong wine market

Heterodimers as the Structural Unit of the T=1 Capsid of the Fungal Double-Stranded RNA Rosellinia Necatrix Quadrivirus 1

Most double-stranded RNA (dsRNA) viruses are transcribed and replicated in a specialized icosahedral capsid with a T=1 lattice consisting of 60 asymmetric capsid protein (CP) dimers. These capsids help to organize the viral genome and replicative complex(es). They also act as molecular sieves that isolate the virus genome from host defense mechanisms and allow the passage of nucleotides and viral transcripts. Rosellinia necatrix quadrivirus 1 (RnQV1), the type species of the family Quadriviridae, is a dsRNA fungal virus with a multipartite genome consisting of four monocistronic segments (segments 1 to 4). dsRNA-2 and dsRNA-4 encode two CPs (P2 and P4, respectively), which coassemble into ∼450-Å-diameter capsids. We used three-dimensional cryo-electron microscopy combined with complementary biophysical techniques to determine the structures of RnQV1 virion strains W1075 and W1118. RnQV1 has a quadripartite genome, and the capsid is based on a single-shelled T=1 lattice built of P2-P4 dimers. Whereas the RnQV1-W1118 capsid is built of full-length CP, P2 and P4 of RnQV1-W1075 are cleaved into several polypeptides, maintaining the capsid structural organization. RnQV1 heterodimers have a quaternary organization similar to that of homodimers of reoviruses and other dsRNA mycoviruses. The RnQV1 capsid is the first T=1 capsid with a heterodimer as an asymmetric unit reported to date and follows the architectural principle for dsRNA viruses that a 120-subunit capsid is a conserved assembly that supports dsRNA replication and organization

Heisenberg double as braided commutative Yetter-Drinfel'd module algebra over Drinfel'd double in multiplier Hopf algebra case

Based on a pairing of two regular multiplier Hopf algebras $A$ and $B$, Heisenberg double $\mathscr{H}$ is the smash product $A \# B$ with respect to the left regular action of $B$ on $A$. Let $\mathscr{D}=A\bowtie B$ be the Drinfel'd double, then Heisenberg double $\mathscr{H}$ is a Yetter-Drinfel'd $\mathscr{D}$-module algebra, and it is also braided commutative by the braiding of Yetter-Drinfel'd module, which generalizes the results in [10] to some infinite dimensional cases.Comment: 18 pages. arXiv admin note: text overlap with arXiv:math/0404029 by other author

Riparian Quality Index (RQI): a methodology for characterising and assessing the environmental conditions of riparian zones

This paper presents a new version of the Riparian Quality Index (RQI). This index serves to assess the ecological status of riparian systems. The paper provides recommended field forms for the collection of the data used to characterise riparian systems prior to their assessment. The RQI considers the main sources of riparian ecological functions and environmental services. It represents a useful tool for monitoring and evaluating the structure of riparian zones, an element of the river morphological conditions considered by the Water Framework Directive. The Index was applied to the Guadiana Basin and other Spanish rivers providing helpful criteria for not only evaluating the present status of riparian systems but also formulating diagnosis and rehabilitation options. It represents a checklist of riparian natural characteristics and possible human-impacted riparian features, and it has valuable potential applications for post-project appraisals.En este trabajo se presenta una nueva versión del índice RQI, conjuntamente con una propuesta de estadillos de campo para la toma de datos y la caracterización de las riberas, que debe ser previa a la interpretación y valoración de su estado. Esta nueva versión del RQI considera los principales componentes de las riberas de los ríos que desarrollan las funciones ecológicas y los servicios ambientales de los corredores fluviales, y representa una herramienta útil para el control y seguimiento de la estructura riparia, la cual forma parte de las condiciones morfológicas de los ríos consideradas por la Directiva Marco del Agua. El índice ha sido aplicado en la Cuenca del Guadiana y en otras regiones españolas, suministrando criterios útiles no solo para la evaluación del estado ecológico de las riberas, sino también para la formulación de diagnosis y opciones de rehabilitación o restauración, representando una lista de características naturales y posibles impactos derivados de actividades humanas de las zonas riparias, con un uso potencial para la evaluaci'on post-proyecto