Desarrollo de un proceso de salud eco amigable para el tratamiento de cicatrices patológicas excesivas

An eco-friendly health process has been designed and implemented for the treatment of excessive pathological scars such as keloids, hypertrophic and inesthetic scars through the use of photons from sunlight as a non-invasive, safe and effective alternative technique in contrast to technical techniques currently used that may be ineffective and risky, that use chemical inputs, energy from non-renewable sources (electrical) and that, often problems of prolonged treatment times. This eco-friendly process oriented to the topic of health is made up of three constitutive units: unit of analysis, treatment and cutaneous rehabilitation, which includes from the identification of the pathology and its own characteristics (thickness, size, pigmentation, etc.); until the prescription of the appropriate treatment and rehabilitation for the affected area. The process uses sunlight for treatment and improvements in the recovery of the affected tissue are expected, thus overcoming the functional limitations caused, it also relieves pain and the disappearance of edemas by 100% and up to 90% improvement in consistency, thickness and appearance of the skin. The process can be applied to patients of any age, sex and in any state of health.Un proceso de salud eco-amigable ha sido diseñado e implementado para el tratamiento de cicatrices patológicas excesivas como queloides, cicatrices hipertróficas e inestéticas mediante el uso de fotones provenientes de la luz solar como técnica alternativa no invasiva, inocua y efectiva en contraste a las técnicas convencionales actualmente empleadas que tienden a ser poco efectivas y riesgosas, que emplean insumos químicos, energía de fuentes no renovables (eléctrica) y que, muchas veces requieren de tiempos prolongados en el tratamiento. Este proceso eco amigable orientado al tema de salud está conformado por tres unidades constitutivas: la unidad de análisis, de tratamiento y de rehabilitación cutánea, que abarca desde la identificación de la patología y sus características propias (grosor, tamaño, pigmentación, etc.); hasta la prescripción del tratamiento y rehabilitación adecuada para la zona afectada. El proceso utiliza luz solar para el tratamiento y se esperan mejoras en la recuperación del tejido afectado, superándose así las limitaciones funcionales causadas, así mismo alivia el dolor y la desaparición de edemas en un 100% y, hasta un 90% de mejoría en consistencia, grosor y aspecto de la piel. El proceso puede ser aplicado a pacientes de cualquier edad, sexo y en cualquier estado de salud

Type IV pili-independent photocurrent production by the cyanobacterium Synechocystis sp. PCC 6803

Biophotovoltaic devices utilize photosynthetic organisms such as the model cyanobacterium Synechocystis sp. PCC 6803 (Synechocystis) to generate current for power or hydrogen production from light. These devices have been improved by both architecture engineering and genetic engineering of the phototrophic organism. However, genetic approaches are limited by lack of understanding of cellular mechanisms of electron transfer from internal metabolism to the cell exterior. Type IV pili have been implicated in extracellular electron transfer (EET) in some species of heterotrophic bacteria. Furthermore, conductive cell surface filaments have been reported for cyanobacteria, including Synechocystis. However, it remains unclear whether these filaments are type IV pili and whether they are involved in EET. Herein, a mediatorless electrochemical setup is used to compare the electrogenic output of wild-type Synechocystis to that of a ΔpilD mutant that cannot produce type IV pili. No differences in photocurrent, i.e., current in response to illumination, are detectable. Furthermore, measurements of individual pili using conductive atomic force microscopy indicate these structures are not conductive. These results suggest that pili are not required for EET by Synechocystis, supporting a role for shuttling of electrons via soluble redox mediators or direct interactions between the cell surface and extracellular substrates

Tracing the evolution of nearby early-type galaxies in low density environments. The Ultraviolet view from GALEX

We detected recent star formation in nearby early-type galaxies located in low density environments, with GALEX Ultraviolet (UV) imaging. Signatures of star formation may be present in the nucleus and in outer rings/arm like structures. Our study suggests that such star formation may be induced by different triggering mechanisms, such as the inner secular evolution driven by bars, and minor accretion phenomena. We investigate the nature of the (FUV-NUV) color vs. Mg2 correlation, and suggest that it relates to "downsizing" in galaxy formation.Comment: Conference "UV Universe 2010" S. Petersburg 31 May - 3 June, 2010 Accepted for publication in Astrophysics & Space Science . The final publication is available at http://www.springerlink.co

Non-parametric kernel estimation for symmetric Hawkes processes. Application to high frequency financial data

We define a numerical method that provides a non-parametric estimation of the kernel shape in symmetric multivariate Hawkes processes. This method relies on second order statistical properties of Hawkes processes that relate the covariance matrix of the process to the kernel matrix. The square root of the correlation function is computed using a minimal phase recovering method. We illustrate our method on some examples and provide an empirical study of the estimation errors. Within this framework, we analyze high frequency financial price data modeled as 1D or 2D Hawkes processes. We find slowly decaying (power-law) kernel shapes suggesting a long memory nature of self-excitation phenomena at the microstructure level of price dynamics.Comment: 6 figure

Dynamics of escaping Earth ejecta and their collision probability with different Solar System bodies

It has been suggested that the ejection to interplanetary space of terrestrial crustal material, accelerated in a large impact, may result in the interchange of biological material between Earth and other Solar System bodies. In this paper, we analyze the fate of debris ejected from Earth by means of numerical simulations of the dynamics of a large collection of test particles. This allows us to determine the probability and conditions for the collision of ejecta with other planets of the Solar System. We also estimate the amount of particles falling-back to Earth as a function of time after being ejected. We find that, in general, the collision rates of Earth ejecta with Venus and the Moon, as well as the fall-back rates, are consistent with results reported in the literature. By considering a larger number of particles than in all previous calculations we have also determined directly the collision probability with Mars and, for the first time, computed collision probabilities with Jupiter. We find that the collision probability with Mars is greater than values determined from collision cross section estimations previously reported.Comment: 9 pages, 4 figures & 1 table. Submitted to Icaru

Conservation and prioritization of indigenous vegetables in the Philippines

Nutrition-related problems are a widespread challenge in the Philippines. Many factors contribute to these problems - the availability and affordability of vegetables, for example, which are jeopardized by challenges such as seasonality and inconsistent yields due to the impacts of climate change. Crop improvement and on-farm diversification, particularly using indigenous vegetables (IVs), can help address these challenges, while also improving rural livelihoods, nutrition, and food security; and even safeguarding local culture and tradition

Centrality Dependence of the High p_T Charged Hadron Suppression in Au+Au collisions at sqrt(s_NN) = 130 GeV

PHENIX has measured the centrality dependence of charged hadron p_T spectra from central Au+Au collisions at sqrt(s_NN)=130 GeV. The truncated mean p_T decreases with centrality for p_T > 2 GeV/c, indicating an apparent reduction of the contribution from hard scattering to high p_T hadron production. For central collisions the yield at high p_T is shown to be suppressed compared to binary nucleon-nucleon collision scaling of p+p data. This suppression is monotonically increasing with centrality, but most of the change occurs below 30% centrality, i.e. for collisions with less than about 140 participating nucleons. The observed p_T and centrality dependence is consistent with the particle production predicted by models including hard scattering and subsequent energy loss of the scattered partons in the dense matter created in the collisions.Comment: 7 pages text, LaTeX, 6 figures, 2 tables, 307 authors, resubmitted to Phys. Lett. B. Revised to address referee concerns. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are publicly available at http://www.phenix.bnl.gov/phenix/WWW/run/phenix/papers.htm

The PHENIX Experiment at RHIC

The physics emphases of the PHENIX collaboration and the design and current status of the PHENIX detector are discussed. The plan of the collaboration for making the most effective use of the available luminosity in the first years of RHIC operation is also presented.Comment: 5 pages, 1 figure. Further details of the PHENIX physics program available at http://www.rhic.bnl.gov/phenix

Conserving and prioritizing indigenous fruits in the Philippines

Nutrition-related problems are a widespread challenge in the Philippines. Many factors contribute to these problems - the availability and affordability of fruits, for example, which are jeopardized by challenges such as seasonality and inconsistent yields due to the impacts of climate change. Crop improvement and on-farm diversification, particularly using indigenous fruits (IFs), can help address these challenges, while also improving rural livelihoods, nutrition, food security; and even safeguarding local culture and tradition