Due lo the importance of conveying the results of university research lo the community, the Vice Rector of Research of San Marcos University is considering taking advantage of such research through the implementation of productive enterprises. To this end we present a business model for technology-based incubators.

Debido a la importancia de transmitir los resultados de las investigaciones universitarias a la comunidad, el Vicerrectorado de Investigación de la UNMSM considera la posibilidad de aprovechar tales investigaciones mediante la implementación de empresas productivas. Con este propósito presentamos un modelo de negocios para incubadoras de base tecnológica.

Breast cancer is a public health problem with ? 1.7 million new cases per year worldwide and with several limitations in the state-of-art screening techniques. Ultrasound elastography involves a set of techniques intended to facilitate the noninvasive diagnosis of cancer. Among these, Vibro-elastography is an ultrasound-based technique that employs external mechanical excitation to infer the elastic properties of soft tissue. In this paper, we evaluate the Vibro-elastography performance in the differentiation of benign and malignant breast lesions. For this study, a group of 18 women with clinically confirmed tumors or suspected malignant breast lesions were invited to participate. For each volunteer, an elastogram was obtained, and the mean elasticity of the lesion and the adjacent healthy tissue were calculated. After the acquisition, the volunteers underwent core-needle biopsy. The hi...

Mechanical properties of soft human tissue are linked to their pathological state. One way to assess these properties is through the Young modulus measurement, which is related to the shear wave speed in the medium when considering tissues as nearly incompressible. In order to characterize its elastic properties using sonoelastography, we introduce a new technique for shear wave estimation from a static interference pattern based on Shear Wave Holography. A relation between the mathematical representation of the interference pattern and the local shear speed is derived using the Phase Derivative approach. The experimental scheme is presented, detailing the advantages of the new configuration. Homogeneous and heterogeneous elastic media were simulated, generating an interference pattern on them. The shear speed estimation algorithm was explained and applied to obtain the speed map, calcul...

This work was supported by the Vice-Rectorate for Research of the Pontificia Universidad Catolica del Peru and the National Council of Science, Technology and Technological Innovation of Peru (CONCYTEC/FONDECYT). The authors thank the staff at CAM-PUCP for help with the SEM images.

In this study, we analyzed the contribution of NH4I and glycerol on the ionic conductivity of carboxymethyl κ/ι-hybrid carrageenan-based solid bio-electrolytes. Electrochemical impedance spectroscopy was used to assess the electrochemical properties of the developed biopolymeric films and their interfaces over a wide range of frequencies (1& Hz–7& MHz). X-ray diffractograms demonstrated the increment of the amorphous fraction in the material as the NH4I content increases, suggesting an enhancement of ion transport processes and the successful incorporation of the salt into the host matrix.

This work was supported by the Vice-Rectorate for Research of the Pontificia Universidad Católica del Perú, the National Council of Science, Technology and Technological Innovation of Peru (CONCYTEC/FONDECYT) and The National Innovation Program for Competitiveness and Productivity (INNOVATE-PERU) of the Peruvian Ministry of Production.

Skin elastic properties change during a cutaneous disorder or in the aging process. Deep knowledge of skin layers helps monitoring and diagnosing structural changes. High frequency ultrasound (HF-US) has been recently introduced to diagnose and evaluate some dermatological disorders in the clinical practice. US elastography adds elasticity information of the analyzed tissue. In particular, harmonic elastography estimates the speed of shear waves produced by external vibration sources, in order to relate the shear wave speed to the Young's modulus. In the epidermis and dermis layers, shear waves are not generated; in contrast, surface acoustic waves (SAWs) exist as they propagate in the top of the tissue. This study uses crawling wave sonoelastography for the estimation of SAWs in human thigh dermis in vivo. Experiments were performed in ten volunteers in the range of 200 - 500 Hz. As oth...

In the present work we study the influence of disorder on the electronic level statistics of a copper nanoparticle with 3568 atoms (Cu3568). The most stable configuration was obtained from molecular dynamic simulations employing a Johnson’s potential for copper. The results indicate that for weak disorder on the on-site energy of the tight-binding Hamiltonian, the nearest-neighbors level spacing distribution is similar to the Wigner distribution. Howerver, for strong disorder the distribution changes to a Poisson-like distribution which is expected for strongly disordered systems.

In the present work we study the influence of disorder on the electronic level statistics of a copper nanoparticle with 3568 atoms (Cu3568). The most stable configuration was obtained from molecular dynamic simulations employing a Johnson’s potential for copper. The results indicate that for weak disorder on the on-site energy of the tight-binding Hamiltonian, the nearest-neighbors level spacing distribution is similar to the Wigner distribution. Howerver, for strong disorder the distribution changes to a Poisson-like distribution which is expected for strongly disordered systems.

The authors disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This work was supported by the National Council of Science, Technology and Technological Innovation [CONCYTEC-FONDECYT]; and the Vice-Rectorate for Research of the Pontificia Universidad Catolica del Peru [VRI-PUCP].

El presente trabajo de investigación es una contribución al aprovechamiento industrial de las algas cianofitas del género Nostoc como aditivo viscosante  para la elaboración de productos alimenticios. En el estudiose realizó la recolección, estabilización y extracción de polisacáridos de muestras de Junín, Ancash, Cajamarca y Pachacamac (Lima). Así mismo se realizó el análisis fisicoquímico, microbiológico y toxicológico, con la finalidad de garantizar su inocuidad y seguridad para el consumo humano.Los resultados son: pH neutro: 7.115 (N. sphaericum) y 7.679 (N. commune).El análisis de la viscosidad de N. sphaericumdio un mayor valor de38.3 cps, mientras que en N. communese obtuvo 4.5 cps. El punto de gelificación dio un mayor valor para N. sphaericum comparado con N. commune. En el análisis microbiológico se encontró ausencia de microorganismos patógenos. La dosi...

El presente trabajo de investigación es una contribución al aprovechamiento industrial de las algas cianofitas del género Nostoc como aditivo viscosante  para la elaboración de productos alimenticios. En el estudiose realizó la recolección, estabilización y extracción de polisacáridos de muestras de Junín, Ancash, Cajamarca y Pachacamac (Lima). Así mismo se realizó el análisis fisicoquímico, microbiológico y toxicológico, con la finalidad de garantizar su inocuidad y seguridad para el consumo humano.Los resultados son: pH neutro: 7.115 (N. sphaericum) y 7.679 (N. commune).El análisis de la viscosidad de N. sphaericumdio un mayor valor de38.3 cps, mientras que en N. communese obtuvo 4.5 cps. El punto de gelificación dio un mayor valor para N. sphaericum comparado con N. commune. En el análisis microbiológico se encontró ausencia de microorganismos patógenos. La dosi...