This paper called: "Development of a Business Plan to set up a study of lawyers", was c... more This paper called: "Development of a Business Plan to set up a study of lawyers", was conducted in the Ica Region, during the year 2015. The purpose of the research was to develop a business plan for the study of law. In that sense, the subject of study was to determine the feasibility of creating a study of lawyers in the Ica Region. The investigation reached the following conclusions and recommendations: there is a reduced supply and growing demand of business legal advice on clients of the Ica Region, the intention of the service is 80%. According to the survey, the research found an unmet demand for 320 customers seeking business legal services. Also, we calculated an initial investment of S/. 14,590, generating total revenue by S/. 325,000 and expenses for S/. 211,680 in the first year. In terms of the economic feasibility of financial, in a period of three years, the net present value (VAN) is equal to S/. 244,880.99 and the internal rate of return (IRR) is 592.13%. ...
Instituto de Investigación El consumidor no sólo tiene la razón,¡ Tiene Honor! Armando Prieto Pre... more Instituto de Investigación El consumidor no sólo tiene la razón,¡ Tiene Honor! Armando Prieto Presentación del tema El 12 de abril del 2007 el Tribunal Constitucional dictó una jurisprudencia 4 que destaca la protección al derecho fundamental denominado honor. El Señor ...
Extraordinary transmission structures show promising capabilities for highly selective filters in... more Extraordinary transmission structures show promising capabilities for highly selective filters in both frequency and angle of incidence. However, their realistic response once manufacturing limitations are taken into account remains unexplored. In this manuscript, we explore a novel degree of freedom: disorder. We expand on previously developed highly efficient method of moment (MoM) implementations to study the effects on the transmission properties of large but finite chains of slots due to different families of disorder: lateral and vertical displacements as well as scatterer manipulation (modifying sizes and rotation angles), showing their effects on the transmission spectrum.
2020 50th European Microwave Conference (EuMC), 2021
A novel one-dimensional periodic planar defected ground structure exploiting glide symmetry is pr... more A novel one-dimensional periodic planar defected ground structure exploiting glide symmetry is proposed here. The planar structure is designed to operate as an electromagnetic bandgap structure that avoids the use of vias. Simulation results show that the glide-symmetric structure offers a wider rejection bandwidth as well as a higher rejection level than the conventional structure (without glide symmetry). Measurement results of the fabricated prototypes are provided to verify the simulation results.
2017 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2017
It is shown in this paper that compact and spurious free planar microwave components can be imple... more It is shown in this paper that compact and spurious free planar microwave components can be implemented by replacing their ordinary constitutive transmission lines with artificial lines based on periodic reactive loading. Thanks to periodicity, rejection bands useful for spurious cancellation are generated. Moreover, reactive loading generates a slow-wave effect that reduces the phase velocity of the artificial lines, with direct impact on device miniaturization. In this paper, a power divider based on a pair of inductively-loaded lines is reported.
The role of within-species genetic variability and ecotypes has been poorly documented in researc... more The role of within-species genetic variability and ecotypes has been poorly documented in research on water bioindication. Some studies already show that macrophytes could present genetic lineages with different optima for specific water parameters. In the present study, we tested this assumption on Potamogeton coloratus Hornem., a macrophyte described as characteristic of oligotrophic waters and threatened by freshwater eutrophication. Species population genetics, water parameters, and macrophyte and macroinvertebrate communities were analysed in 29 sites among three eco-regions of the eastern parts of France: Rhine Plain, Rhone Valley and Provence. The observed diversity of habitats can be divided into two main categories: the lotic hydrosystems such as springs and small watercourses often fed by groundwater, and the lentic waterbodies such as shallow pools or pond sides. Sampling sites were characterised by alkaline (mean pH 7.5 ± 0.4) and cool waters (mean 15.8 ± 4.1 °C) with lo...
A novel microstrip differential transmission line for broadband common-mode rejection is proposed... more A novel microstrip differential transmission line for broadband common-mode rejection is proposed. The basic unit cell of the artificial transmission line consists of a pair of coupled lines with a slot in the ground plane in which a conductor patch has been etched. This patch is symmetrically series connected to the ground plane by means of high impedance lines that act as inductors. The structure exhibits all-pass behavior under differential-mode operation because the etched pattern in the ground plane side is a virtual ground. This is because the symmetry plane is an electric wall. However, under common-mode operation the symmetry plane acts as a magnetic wall and the structure exhibits elliptic low pass characteristics. Therefore, the structure prevents common-mode propagation above a specified frequency that can be easily controlled by adjusting the length of the high impedance lines. The common-mode rejection level can be increased by cascading unit cells of this type. As an e...
IEEE Transactions on Microwave Theory and Techniques, 2021
In this article, we present a novel application of glide symmetry to differential lines with comm... more In this article, we present a novel application of glide symmetry to differential lines with common-mode (CM) rejection filter properties. Two different topologies are investigated. First, glide symmetry is applied to a pair of differential lines where ground-connected mushrooms are employed as a CM rejection structure. The same idea is also used in a pair of differential lines where defective ground structures are introduced to stop the CM propagation. It is demonstrated that the CM rejection bandwidth is drastically increased when glide symmetry is exploited in both topologies when compared with their corresponding structures without glide symmetry. Furthermore, we show that the differential-mode propagation is hardly affected by the use of glide symmetry, ensuring the good integrity of the transmitted information. Experimental demonstration for both mushroom and defected ground structure is provided. Good agreement between simulations and measurements results is observed.
This document contains supplementary material for the article with the same title that appeared i... more This document contains supplementary material for the article with the same title that appeared in American Journal of Physics in 2019
Aquatic environmental DNA (eDNA) studies have considerably taken off during the last 10 years, pr... more Aquatic environmental DNA (eDNA) studies have considerably taken off during the last 10 years, promptly establishing eDNA as a new approach to monitoring the ecological status of European surface waters. On the one hand due to the numerous biological methods based on aquatic species, on the other hand due to the development of group-specific primers that allowed discrimination between species or at least genera. Understandably, rapid achievements were made for animal groups that include a small number of species (fish, amphibians) whereas it is still in development for plants, due to the complexity of obtaining a universal barcode applicable to eDNA for the latter. Nonetheless, research in plant eDNA barcoding and metabarcoding is making significant progress, mainly expanding in the detection of plant species in freshwater ecosystems. With a multi-barcode eDNA metabarcoding approach in mind, we are preparing a plant DNA barcode reference library for our study area, the Northern Vosg...
During July 2018, a group of top high school Spanish students attended a summer scientific camp a... more During July 2018, a group of top high school Spanish students attended a summer scientific camp at the University of Seville. The topic of the project was magnetic levitation. During the one-week-long stay, the students investigated several possible ways of achieving stable levitation. These included diamagnetic levitation, use of superconductors, induced current levitation, and the toy Levitron®. The experiments were accompanied by their corresponding conceptual and theoretical explanations.During July 2018, a group of top high school Spanish students attended a summer scientific camp at the University of Seville. The topic of the project was magnetic levitation. During the one-week-long stay, the students investigated several possible ways of achieving stable levitation. These included diamagnetic levitation, use of superconductors, induced current levitation, and the toy Levitron®. The experiments were accompanied by their corresponding conceptual and theoretical explanations.
A new dual-band balanced bandpass filter based on magnetically coupled open-loop resonators in mu... more A new dual-band balanced bandpass filter based on magnetically coupled open-loop resonators in multilayer technology is proposed in this paper. The lower differential passband, centered at the Global Positioning System (GPS) L1 frequency, 1.575 GHz, was created by means of two coupled resonators etched in the middle layer of the structure, while the upper differential passband, centered at a Wi-Fi frequency of 2.4 GHz, was generated by coupling two resonators on the top layer. Magnetic coupling was used to design both passbands, leading to an intrinsic common-mode rejection of 39 dB within the lower passband and 33 dB within the upper passband. Simulation and measurement results are provided to verify the usefulness of the proposed dual-band differential bandpass filter.
This paper called: "Development of a Business Plan to set up a study of lawyers", was c... more This paper called: "Development of a Business Plan to set up a study of lawyers", was conducted in the Ica Region, during the year 2015. The purpose of the research was to develop a business plan for the study of law. In that sense, the subject of study was to determine the feasibility of creating a study of lawyers in the Ica Region. The investigation reached the following conclusions and recommendations: there is a reduced supply and growing demand of business legal advice on clients of the Ica Region, the intention of the service is 80%. According to the survey, the research found an unmet demand for 320 customers seeking business legal services. Also, we calculated an initial investment of S/. 14,590, generating total revenue by S/. 325,000 and expenses for S/. 211,680 in the first year. In terms of the economic feasibility of financial, in a period of three years, the net present value (VAN) is equal to S/. 244,880.99 and the internal rate of return (IRR) is 592.13%. ...
Instituto de Investigación El consumidor no sólo tiene la razón,¡ Tiene Honor! Armando Prieto Pre... more Instituto de Investigación El consumidor no sólo tiene la razón,¡ Tiene Honor! Armando Prieto Presentación del tema El 12 de abril del 2007 el Tribunal Constitucional dictó una jurisprudencia 4 que destaca la protección al derecho fundamental denominado honor. El Señor ...
Extraordinary transmission structures show promising capabilities for highly selective filters in... more Extraordinary transmission structures show promising capabilities for highly selective filters in both frequency and angle of incidence. However, their realistic response once manufacturing limitations are taken into account remains unexplored. In this manuscript, we explore a novel degree of freedom: disorder. We expand on previously developed highly efficient method of moment (MoM) implementations to study the effects on the transmission properties of large but finite chains of slots due to different families of disorder: lateral and vertical displacements as well as scatterer manipulation (modifying sizes and rotation angles), showing their effects on the transmission spectrum.
2020 50th European Microwave Conference (EuMC), 2021
A novel one-dimensional periodic planar defected ground structure exploiting glide symmetry is pr... more A novel one-dimensional periodic planar defected ground structure exploiting glide symmetry is proposed here. The planar structure is designed to operate as an electromagnetic bandgap structure that avoids the use of vias. Simulation results show that the glide-symmetric structure offers a wider rejection bandwidth as well as a higher rejection level than the conventional structure (without glide symmetry). Measurement results of the fabricated prototypes are provided to verify the simulation results.
2017 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2017
It is shown in this paper that compact and spurious free planar microwave components can be imple... more It is shown in this paper that compact and spurious free planar microwave components can be implemented by replacing their ordinary constitutive transmission lines with artificial lines based on periodic reactive loading. Thanks to periodicity, rejection bands useful for spurious cancellation are generated. Moreover, reactive loading generates a slow-wave effect that reduces the phase velocity of the artificial lines, with direct impact on device miniaturization. In this paper, a power divider based on a pair of inductively-loaded lines is reported.
The role of within-species genetic variability and ecotypes has been poorly documented in researc... more The role of within-species genetic variability and ecotypes has been poorly documented in research on water bioindication. Some studies already show that macrophytes could present genetic lineages with different optima for specific water parameters. In the present study, we tested this assumption on Potamogeton coloratus Hornem., a macrophyte described as characteristic of oligotrophic waters and threatened by freshwater eutrophication. Species population genetics, water parameters, and macrophyte and macroinvertebrate communities were analysed in 29 sites among three eco-regions of the eastern parts of France: Rhine Plain, Rhone Valley and Provence. The observed diversity of habitats can be divided into two main categories: the lotic hydrosystems such as springs and small watercourses often fed by groundwater, and the lentic waterbodies such as shallow pools or pond sides. Sampling sites were characterised by alkaline (mean pH 7.5 ± 0.4) and cool waters (mean 15.8 ± 4.1 °C) with lo...
A novel microstrip differential transmission line for broadband common-mode rejection is proposed... more A novel microstrip differential transmission line for broadband common-mode rejection is proposed. The basic unit cell of the artificial transmission line consists of a pair of coupled lines with a slot in the ground plane in which a conductor patch has been etched. This patch is symmetrically series connected to the ground plane by means of high impedance lines that act as inductors. The structure exhibits all-pass behavior under differential-mode operation because the etched pattern in the ground plane side is a virtual ground. This is because the symmetry plane is an electric wall. However, under common-mode operation the symmetry plane acts as a magnetic wall and the structure exhibits elliptic low pass characteristics. Therefore, the structure prevents common-mode propagation above a specified frequency that can be easily controlled by adjusting the length of the high impedance lines. The common-mode rejection level can be increased by cascading unit cells of this type. As an e...
IEEE Transactions on Microwave Theory and Techniques, 2021
In this article, we present a novel application of glide symmetry to differential lines with comm... more In this article, we present a novel application of glide symmetry to differential lines with common-mode (CM) rejection filter properties. Two different topologies are investigated. First, glide symmetry is applied to a pair of differential lines where ground-connected mushrooms are employed as a CM rejection structure. The same idea is also used in a pair of differential lines where defective ground structures are introduced to stop the CM propagation. It is demonstrated that the CM rejection bandwidth is drastically increased when glide symmetry is exploited in both topologies when compared with their corresponding structures without glide symmetry. Furthermore, we show that the differential-mode propagation is hardly affected by the use of glide symmetry, ensuring the good integrity of the transmitted information. Experimental demonstration for both mushroom and defected ground structure is provided. Good agreement between simulations and measurements results is observed.
This document contains supplementary material for the article with the same title that appeared i... more This document contains supplementary material for the article with the same title that appeared in American Journal of Physics in 2019
Aquatic environmental DNA (eDNA) studies have considerably taken off during the last 10 years, pr... more Aquatic environmental DNA (eDNA) studies have considerably taken off during the last 10 years, promptly establishing eDNA as a new approach to monitoring the ecological status of European surface waters. On the one hand due to the numerous biological methods based on aquatic species, on the other hand due to the development of group-specific primers that allowed discrimination between species or at least genera. Understandably, rapid achievements were made for animal groups that include a small number of species (fish, amphibians) whereas it is still in development for plants, due to the complexity of obtaining a universal barcode applicable to eDNA for the latter. Nonetheless, research in plant eDNA barcoding and metabarcoding is making significant progress, mainly expanding in the detection of plant species in freshwater ecosystems. With a multi-barcode eDNA metabarcoding approach in mind, we are preparing a plant DNA barcode reference library for our study area, the Northern Vosg...
During July 2018, a group of top high school Spanish students attended a summer scientific camp a... more During July 2018, a group of top high school Spanish students attended a summer scientific camp at the University of Seville. The topic of the project was magnetic levitation. During the one-week-long stay, the students investigated several possible ways of achieving stable levitation. These included diamagnetic levitation, use of superconductors, induced current levitation, and the toy Levitron®. The experiments were accompanied by their corresponding conceptual and theoretical explanations.During July 2018, a group of top high school Spanish students attended a summer scientific camp at the University of Seville. The topic of the project was magnetic levitation. During the one-week-long stay, the students investigated several possible ways of achieving stable levitation. These included diamagnetic levitation, use of superconductors, induced current levitation, and the toy Levitron®. The experiments were accompanied by their corresponding conceptual and theoretical explanations.
A new dual-band balanced bandpass filter based on magnetically coupled open-loop resonators in mu... more A new dual-band balanced bandpass filter based on magnetically coupled open-loop resonators in multilayer technology is proposed in this paper. The lower differential passband, centered at the Global Positioning System (GPS) L1 frequency, 1.575 GHz, was created by means of two coupled resonators etched in the middle layer of the structure, while the upper differential passband, centered at a Wi-Fi frequency of 2.4 GHz, was generated by coupling two resonators on the top layer. Magnetic coupling was used to design both passbands, leading to an intrinsic common-mode rejection of 39 dB within the lower passband and 33 dB within the upper passband. Simulation and measurement results are provided to verify the usefulness of the proposed dual-band differential bandpass filter.
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