Biology, fisheries and culture of tropical groupers and snappers

Groupers and snappers are important fishery resources of the tropics and subtropics, where their high values have caused most of their stocks to be heavily exploited, some even to the point of collapse. Trends towards heavy demand and decreasing natural supply, which are accelerating in several parts of the world, prompted various mariculture ventures. Focused research on biology and the population dynamics of groupers and snappers, and on their reproduction and growth under controlled condition will remain essential for dealing with the questions on how to better manage their fisheries. This volume of papers presents important scientific findings and views on these two important groups of fish.Percoid fisheries, Fishery biology, Fishery management, Conferences

Láser y luz pulsada intensa en el tratamiento de hemangiomas infantiles y malformaciones vasculares

The use of the indications of the laser in treating vascular malformations and infantile haemangiomas is based on the theory of selective photothermolysis, in which the oxyhaemoglobin is the target chromophore on which the light of the laser acts, thus avoiding damage to neighbouring tissues. The pulsed dye laser is the most employed and at present is the treatment of choice in capillary malformations (port-wine stains). A variable response is obtained, with a substantial clearing of the colour of the lesion after several sessions. Application at early ages seems to improve the results. Venous malformations, especially those localised in the mucosa, respond better to the Nd:YAG laser; lymphatic malformations to the CO2 laser. Arteriovenous malformations rarely respond. Use of the pulsed dye laser in the phase of proliferation of the haemangiomas is subject to controversy, except where there is ulceration. A rapid re-epithelialization is obtained in these cases following its use. In the involution phase, patients with residual vascular lesions can benefit from other lasers such as KTP or Nd:YAG. If they show an atrophic surface and scars these complications improve with the CO2 laser or Er:YAG. New treatment modalities are emerging, such as photodynamic therapy, whose efficacy and safety, both in the treatment of haemangiomas and vascular malformations, have yet to be confirmed

LA ALIANZA. Cómo gestionar el talento en la era de internet. Reid Hoffman, Ben Casnocha, y Chris Yeh. Logroño: Universidad Internacional de La Rioja, S.A. (UNIR Editorial), 2016. 171p

El libro “La alianza. Cómo gestionar el talento en la era de Internet” (2016) es la traducción al español del libro “The Alliance. Managing talent in the networked age” (Harvard Business Review Press, 2014). Sus autores son tres: Reid Hoffman (cofundador y presidente ejecutivo de LinkedIn y socio de Greylock Partners), Ben Casnocha (escritor y emprendedor en Silicon Valley, fue director de personal en LinkedIn y en Greylock Partners, autor junto con Reid Hoffman de otros libros como El mejor negocio eres tú: Adáptate al futuro, invierte en ti mismo e impulsa tu carrera , número uno en ventas en The New York Times), y Chris Yeh (vicepresidente de marketing de PBworks y cofundador y socio de Wasabi Ventures). Los autores tienen en común su dedicación al mundo de las tecnologías y la innovación. Este libro, de lectura fluida, está estructurado en ocho capítulos y tres apéndices que totalizan 171 páginas. Todo el libro gira en torno a la idea repetida en múltiples párrafos de que el modelo tradicional de empleo para toda la vida, más apropiado para los períodos de estabilidad, resulta rígido para la era del networking . Consideran que es un modelo en recesión en todo el mundo..

Medida de umidade do solo com sonda de nêutrons nas proximidades da superfície

The problem of neutron probe soil water content measurements close to soil surface is analysed from the spatial variability and also from the slow neutron "loss" to the atmosphere points of view. Results obtained on a dark red latosol of the county of Piracicaba,SP, indicate the possibility of precisely measuring the neutron "sphere of influence" when different media are used on soil surface.O problema da medida da umidade nas proximidades da superfície do solo é abordado do ponto de vista de sua variabitidade espacial e da "perda" de nêutrons lentos para a atmosfera. Dados, obtidos em terra roxa estruturada do município de Piracicaba,SP, mostram a possibilidade de se avaliar, com precisão, a "esfera de influência" da medida, quando se utilizam meios diferentes na superfície do solo

Woolliness assessment in peaches (Cv. Springcrest) by sensory and instrumental means.

Mealiness is a negative attribute of sensory texture, characterised by the lack of juiciness without variation of total water content in the tissues. In peaches, mealiness is also known as "woolliness" and "leatheriness". This internal disorder is characterised by the lack of juiciness and flavour. In peaches, it is associated with interna browning near the stone and the incapacity of ripening although there is externa ripe appearance. Woolliness is associated with inadequate cold storage and is considered as a physiological disorder that appears in stone fruits when an unbalanced pectolitic enzyme activity during storage occurs (Kailasapathy and Melton, 1992). Many attempts have been carried out to identify and measure mealiness and woolliness in fruits. The texture of a food product is composed by a wide spectrum of sensory attributes. Consumer defines the texture integrating simultaneously all the sensory attributes. However, an instrument assesses one or several parameters related to a fraction of the texture spectrum (Kramer, 1973). The complexity of sensory analysis by means of trained panels to assess the quality of some producing processes, supports the attempt to estimate texture characteristics by instrumental means. Some studies have been carried out comparing sensory and instrumental methods to assess mealiness and woolliness. The current study is centered on analysis and evaluation of woolliness in peaches and is part of the European project FAIR CT95 0302 "Mealiness in fruits: consumer perception and means for detection". The main objective of this study was to develop procedures to detect woolly peaches by sensory and by instrumental means, as well as to compare both measuring procedures

Effect of Poultry Manure-Derived Compost on the Growth of eucalypts spp. Hybrid Clones

Interspecific hybrids of E. grandis × E. camaldulensis were generated to widen the plantation area. The aim of this study was to assess root capability and development for six different clones of eucalyptus grown in substrates made with three different composts derived from poultry manure. A factorial design was used to assess the effect of different composts on six growth variables. The analysis detected a greater effect from the genotype than the substrate. E. grandis × E. camaldulensis hybrid vegetative propagation was successful in alternative substrates formulated from composted poultry manure. GC8 was the genotype that showed the greatest differences for four the different variables among the substrates, being both the most sensitive and the one with the highest values for all parameters measured. The hybrids' vegetative propagation was determined in alternative substrates formulated from poultry manure compost. The physicochemical characteristics of substrates composed of pine bark and sawdust provided adequate conditions for the growth of eucalyptus. GC8 was the genotype most sensitive to the use of different substrates, showing significant differences in the ratio of roots/callus, radicular dry weight, and cutting dry weight. These clones might be a good option for evaluating compost-based substrates for forestry applications

The impact of 8-aryl-and 8-heteroaryl-2'-deoxyguanosine derivatives on G-quadruplex formation

Guanine and G-rich oligonucleotides are known to self-assemble in the presence of a variety of cations to form higher ordered structures known as Gquadruplexes. We have synthesized a library of 8-aryl/heteroaryl-2'-deoxyguanosine derivatives (8ArGs) that are also able to self-assemble into quadruplex structures. We demonstrate that the properties of such quadruplexes can be modulated by the nature of the groups attached to the guanine base. These supramolecules are potentially useful in the development of self-assembled nanodevices