The role of mangrove ecosystems and coastal aquaculture in the life of people in coastal mangrove areas

In discussing the benefits from forests, usually only the direct products such as timber or other forestry products are counted. Little attention is made on indirect benefits such as climate regulation, erosion prevention, flood restriction, etc., which are of great importance because mangrove forests grow at tidal and riverside areas where winds and waves are usually strong. In this paper, the direct products and indirect benefits from mangrove forests are discussed

THE ROLE OF MANGROVES IN MITIGATING NATURAL DISASTERS

Joint Research on Environmental Science and Technology for the Eart

ENVIRONMENTAL IMPACTS OF SHRIMP CULTURE IN THE MANGROVE AREAS OF VIETNAM

Joint Research on Environmental Science and Technology for the Eart

Application of generalized diffusion theory for calculation of particle distribution in suspension flow between two vertically coaxial cylinders

Applications of the generalized diffusion theory for calculation of rotating spherical particle distribution in a suspension with viscouse fluid, using nonlinear closing relationships are demonstrated. A problem of motion of suspension in the gap between two rotating vertically coaxial cylinders was established and stationary case of the problem was numerically investigated. A comparison between the numerical prediction of particle concentration and the experimental data of Phillips et al. (1992) was made

Optimal Selection of Number and Location of Meteo-Hydrological Monitoring Networks on Vu Gia – Thu Bon River Basin using GIS

Meteorological data play a particularly important role in hydrologic research because the climate and weather of an area exert a profound influence on most hydrologic processes. Meanwhile, hydrological data are critical for performing a range of purposes, including water resources assessment, impacts of climate change and flood forecasting and warning. It can be said that the prevention of disasters caused by floods and droughts would be impossible without rational forecasting technology based on an understanding of the rainfall-runoff phenomenon and statistical analysis of past hydrological data, which cannot be achieved without meteo-hydrological observations. The lack of adequate meteo-hydrological data affects the ability to model, predict and plan for catastrophic events such as floods and droughts which have obvious negative impacts on public health and socio-economic aspects. The accurate estimation of the spatial distribution of meteorological and hydrological parameters requires a dense network of instruments, which entails large installation and operational costs. It is thus necessary to optimize the number and location of meteo-hydrological stations. This paper presents a GIS-based approach to establishing an optimal meteo-hydrological station network on Vu Gia- Thu Bon river basin for developing an up-to-date real time flood warning system. Based on statistical analysis of the annual rainfall total data at 9 existing gauges in the study area from 1980 to 2013, it showed that the error of the existing network was about 7.47%. Considering 9 rain gauges as a standard representative of rainfall over the region, if the error decreases from 7.47% to 5%, the number of additional rain gauges should be 20. For adequate and economical network design, these additional rain gauges were spatially distributed between the different isohyetals after considering the relative distances between rain gauges, their accessibility, personnel required for making observations using multi-layers analysis and spatial interpolation. For hydrological stations, based on consideration existing network with the requirements set out by the flood warning system, the number of stations should be five. In terms of spatial distribution, three stations were distributed across two main tributaries of Vu Gia- Thu Bon river basin, behind the dams for water discharge calibration and the others were located on downstream for water stage calibration. The results of the study provided a scientific approach can be applied to optimizing the meteo-hydrological station network over the river basin

One-loop contributions for A0→ℓℓˉVA^0 \rightarrow \ell \bar{\ell} V with ℓ≡e,μ\ell \equiv e, \mu and V≡γ,ZV\equiv \gamma, Z in Higgs Extensions of the Standard Model

We present one-loop formulas for the decay of CP-odd Higgs $A^0 \rightarrow \ell \bar{\ell} V$ with $\ell \equiv e, \mu$ and $V\equiv \gamma, Z$ in Higgs Extensions of the Standard Model, considering two higgs doublet model with a complex (and real) scalar, two higgs doublet model as well as triplet higgs model. Analytic results for one-loop amplitudes are expressed in terms of Passarino-Veltman functions following the standard notations of {\tt LoopTools}. As a result, physical results can be generated numerically by using the package. In phenomenological results, the total decay widths and the differential decay rates with respect to the invariant mass of lepton pair are analyzed for two typical models such as two higgs doublet model and triplet higgs model.Comment: 35 page