Usporedba djelovanja korionskog gonadotropina konja (eCG) i estradiol cipionata primijenjenih 24 sata nakon prestanka kontrolirane primjene progesterona kao dijela protokola za sinkronizaciju estrusa i umjetno osjemenjivanje meksičkog Criollo goveda.

Two experiments were conducted to evaluate the effect of administering equine chorionic gonadotropin (eCG) in substitution of estradiol, 24 h after the removal of a progesterone intravaginal device, on estrus and ovulatory response, and pregnancy rates of Rodeo Criollo cows (exp. 1, n = 21) and heifers (exp. 2, n = 39) subjected to a synchronization protocol (estradiol + CIDR + PGF2α) with estrus-detected artificial insemination. All females were inseminated 12 h after detected estrus. In cows, estrus and ovulation response, and maximum pre-ovulatory follicle diameter were similar (P>0.05) between equine chorionic gonadotropin and estradiol groups. However, the time to estrus was shorter (P0.05) in ovulation rate. Both treatments resulted in low pregnancy rates, with a significantly lower (P0,05) u skupinama krava kod kojih je bio primijenjen korionski gonadrotropin ili estradiol. Međutim, u skupini kod koje je bio primijenjen estradiol vrijeme do estrusa je bilo kraće (P0,05) u stopi ovulacije. Oba su postupka dovela do niže stope gravidnosti, pri čemu je smanjenje kod junica kojima je bio primijenjen korionski gonadotropin konja bilo signifikantno (P<0,05). Zaključno, primjena korionskog gonadotropina konja, kao zamjene za estradiol nakon uklanjanja sredstva za otpuštanje progesterona, dovela je u sklopu protokola za otkrivanje estrusa i umjetno osjemenjivanje do povećanog grupiranja estrusa i ovulacije te posljedično veće stope gravidnosti u krava, ali ne i u junica

Usporedba djelovanja korionskog gonadotropina konja (eCG) i estradiol cipionata primijenjenih 24 sata nakon prestanka kontrolirane primjene progesterona kao dijela protokola za sinkronizaciju estrusa i umjetno osjemenjivanje meksičkog Criollo goveda.

Two experiments were conducted to evaluate the effect of administering equine chorionic gonadotropin (eCG) in substitution of estradiol, 24 h after the removal of a progesterone intravaginal device, on estrus and ovulatory response, and pregnancy rates of Rodeo Criollo cows (exp. 1, n = 21) and heifers (exp. 2, n = 39) subjected to a synchronization protocol (estradiol + CIDR + PGF2α) with estrus-detected artificial insemination. All females were inseminated 12 h after detected estrus. In cows, estrus and ovulation response, and maximum pre-ovulatory follicle diameter were similar (P>0.05) between equine chorionic gonadotropin and estradiol groups. However, the time to estrus was shorter (P0.05) in ovulation rate. Both treatments resulted in low pregnancy rates, with a significantly lower (P0,05) u skupinama krava kod kojih je bio primijenjen korionski gonadrotropin ili estradiol. Međutim, u skupini kod koje je bio primijenjen estradiol vrijeme do estrusa je bilo kraće (P0,05) u stopi ovulacije. Oba su postupka dovela do niže stope gravidnosti, pri čemu je smanjenje kod junica kojima je bio primijenjen korionski gonadotropin konja bilo signifikantno (P<0,05). Zaključno, primjena korionskog gonadotropina konja, kao zamjene za estradiol nakon uklanjanja sredstva za otpuštanje progesterona, dovela je u sklopu protokola za otkrivanje estrusa i umjetno osjemenjivanje do povećanog grupiranja estrusa i ovulacije te posljedično veće stope gravidnosti u krava, ali ne i u junica

Acousto-optic interaction in biconical tapered fibers: shaping of the stopbands

The effect of a gradual reduction of the fiber diameter on the acousto-optic (AO) interaction is reported. The experimental and theoretical study of the intermodal coupling induced by a flexural acoustic wave in a biconical tapered fiber shows that it is possible to shape the transmission spectrum, for example, substantially broadening the bandwidth of the resonant couplings. The geometry of the taper transitions can be regarded as an extra degree of freedom to design the AO devices. Optical bandwidths above 45 nm are reported in a tapered fiber with a gradual reduction of the fiber down to 70 μm diameter. The effect of including long taper transition is also reported in a double-tapered structure. A flat attenuation response is reported with 3-dB stopband bandwidth of 34 nm

In-Fiber Acousto-Optic Interaction Based on Flexural Acoustic Waves and Its Application to Fiber Modulators

The design and implementation of in-fiber acousto-optic (AO) devices based on acoustic flexural waves are presented. The AO interaction is demonstrated to be an efficient mechanism for the development of AO tunable filters and modulators. The implementation of tapered optical fibers is proposed to shape the spectral response of in-fiber AO devices. Experimental results demonstrate that the geometry of the tapered fiber can be regarded as an extra degree of freedom for the design of AO tunable attenuation filters (AOTAFs). In addition, with the objective of expanding the application of AOTAFs to operate as an amplitude modulator, acoustic reflection was intentionally induced. Hence, a standing acoustic wave is generated which produces an amplitude modulation at twice the acoustic frequency. As a particular case, an in-fiber AO modulator composed of a double-ended tapered fiber was reported. The fiber taper was prepared using a standard fusion and pulling technique, and it was tapered down to a fiber diameter of 70 μm. The device exhibits an amplitude modulation at 2.313 MHz, which is two times the acoustic frequency used (1.1565 MHz); a maximum modulation depth of 60%, 1.3 dB of insertion loss, and 40 nm of modulation bandwidth were obtained. These results are within the best results reported in the framework of in-fiber AO modulators

ICTD Work, Plus mFeel : improving communication in resource-poor settings

This issue's Works-In-Progress department has four entries related to the issue's theme, Information and Communication Technologies for Development (ICTD). They are “Sustainable ICT in Agricultural Value Chains”, “Measuring Social Inclusion in Primary Schools”, “An Architecture for Green Mobile Computation”, and “Improving Communication in Resource-Poor Settings”. A fifth entry, “mFeel: An Affective Mobile System”, covers the mFeel mobile system, which combines context awareness with affective and cognitive techniques

Magnetic operations: a little fuzzy physics?

We examine the behaviour of charged particles in homogeneous, constant and/or oscillating magnetic fields in the non-relativistic approximation. A special role of the geometric center of the particle trajectory is elucidated. In quantum case it becomes a 'fuzzy point' with non-commuting coordinates, an element of non-commutative geometry which enters into the traditional control problems. We show that its application extends beyond the usually considered time independent magnetic fields of the quantum Hall effect. Some simple cases of magnetic control by oscillating fields lead to the stability maps differing from the traditional Strutt diagram.Comment: 28 pages, 8 figure

Incidencia y vinculación

El PAP de migración en Jalisco tiene como propósito trabajar con organizaciones que apoyan personas migrantes y refugiadas, promoviendo sus derechos y mejorando las condiciones de sus procesos. El equipo de incidencia, se enfoca en la creación de espacios de trabajo y discusión que tienen como objetivo incidir en los procesos de movilidad humana en el estado. Continúa con el trabajo del semestre de primavera para la mejora de la Propuesta Ley de Retorno así como la participación del equipo en el Ciclo de la Comunidad Solidaria. Retoma una propuesta del PRAMI de 2019 para crear jornadas de diálogo de Sociedad Civil con actores de gobierno y organizaciones. En este periodo era fundamental realizar una sesión de trabajo para la Propuesta de Ley de Retorno, apoyo de investigación para la comunidad solidaria y producir una propuesta inicial para las jornadas de diálogo. Elegimos enfocar la mayoría de los esfuerzos a la mejora de la Propuesta de Ley de Retorno debido a la presión de tiempo causada por el próximo periodo electoral. Paralelamente distintos integrantes del equipo realizaban actividades relacionadas a los otros proyectos. El equipo presenta cómo productos principales una lista de propuestas de mejora para la Propuesta Ley de Retorno, directorios de organizaciones que tratan el tema de movilidad humana en Jalisco, infografías para la Comunidad Solidaria y la propuesta inicial para las jornadas de diálogo las cuáles se llevarán a cabo en el periodo de Otoño de este PAP.ITESO, A.C

7. Del bosque húmedo al bosque seco: adaptabilidad de las palmeras al cambio climático

Originalmente, las palmeras son especies adaptadas al bosque tropical húmedo. Sin embargo existe un número significativo de especies adaptadas a ecosistemas caracterizados por algún grado de sequía. En América del Sur existen 130 especies adaptadas a ecosistemas relativamente secos, lo que dice de su capacidad de adaptación en relación a la limitación del recurso hídrico. Esta cualidad les permite adecuarse al contexto de disminución de las precipitaciones, uno de los aspectos del cambio climático en la región. Sin embargo, en América del Sur, el proceso de adaptación de las palmeras a los ecosistemas secos ha demorado entre 10 a15 millones de años, y solamente 13 linajes de palmeras tuvieron la capacidad de pasar del bosque húmedo a ecosistemas secos lo cual sugiere que si bien son adaptables, también son poco flexibles para responder a cambios rápidos del clima.Á l’origine, les palmiers sont des espèces adaptées à la forêt humide tropicale. Toutefois, il existe un nombre important d’espèces adaptées á des écosystèmes caractérisés par un certain degré de sécheresse. En Amérique du Sud on dénombre 130 espèces adaptées aux écosystèmes relativement secs, ce qui montre leur adaptabilité par rapport à la limitation des ressources en eau. Cette qualité leur permet de s’adapter au contexte de la diminution des précipitations, un des aspects du changement climatique dans la région. Néanmoins, en Amérique du Sud, l’adaptation des palmiers aux écosystèmes secs a pris entre 10 et 15 millions d’années, et seulement 13 lignées de palmiers ont eu la capacité de passer de la forêt tropicale humide á des écosystèmes plus secs suggérant que, s’ils sont adaptables, ils sont également difficilement capables de réagir aux changements rapides du climat.Originally, palm trees are species adapted to tropical rainforest. However, there are a significant number of species adapted to ecosystems with some degree of drought. In South America there are 130 species adapted to relatively dry ecosystems, which tells about its ability to adapt to environments with scarce water resources. This quality enables them to adapt perfectly into the context of decreasing rainfall caused by climate change. However, in South America, the adaptation of palm trees to dry ecosystems has delayed among 10 to 15 million of years, and only 13 strains of palm trees had the ability to pass from the rainforest to dry ecosystems, suggesting that although they are adaptable to new ecosystems, there are also less flexible to respond to rapid changes of the weather

Andes Basin Focal Project

The CPWF Basin Focal Project for the Andes system of basins worked with a range of local stakeholders to develop a better understanding of the mechanisms for improving the productivity of water in the Andes. We considered productivity in broad terms as the productivity of energy (HEP), food and fiber (agriculture) and livelihoods (industry, transport and benefit sharing such as Payments for Environmental Services schemes (PES)). In addition to the compiled data bases and analyses on poverty and institutions, one of the key deliverables of the project was the development and deployment of the AguAAndes policy support system (PSS). This integrates analyses of water availability and productivity within the local environmental and policy context. It is a web-based policy support system combining an extensive spatial database with process-based models for hydrology, crop production and socio-economic processes. It is intended to allow analysts and decision makers to test the potential onsite and offsite impacts of land and water management decisions in terms of their ability to sustain environmental services and human wellbeing. Interventions and recommendations for future actions on water and food in the region are presented