Results 11 to 20 of about 3,349 (206)

Números primos gemelos y primos gemelos de Germain [PDF]

Revista Digital: Matemática, Educación e Internet, 2022
La cardinalidad de los números primos de Germain, es decir, aquellos primos p tales que 2p 1 también es primo, siempre ha sido un tema de gran interés, ya que tenemos la conjetura sobre la infinitud de esos números primos. Se presentan varios resultados interesantes, primero se revisa la relación entre la cardinalidad de los números primos y los primos
Miramontes, Gerardo, Miramontes, Diego
core   +5 more sources

Bases para el desarrollo y aplicación de Gemelos Digitales en la industria de la energía eléctrica

Ingenio Tecnológico, 2023
En la actualidad, la expansión y mejora de los sistemas de energía eléctrica se realiza de manera integral. Esto hace que en los sistemas actuales se busque la incorporación de nuevas tecnologías y enfoques en el marco de la Industria 4.0. A raíz de esto,
Gonzalo Alvarez, Dan Kröhling, Ernesto Martinez   +2 more
doaj   +4 more sources

Outcome following laser surgery of twin–twin transfusion syndrome complicated by selective fetal growth restriction: systematic review and meta‐analysis

Ultrasound in Obstetrics &Gynecology, Volume 62, Issue 3, Page 320-327, September 2023., 2023
ABSTRACT Objective The published literature reports mostly on the outcome of twin pregnancies complicated by twin–twin transfusion syndrome (TTTS) without considering whether the pregnancy is also complicated by another pathology, such as selective fetal growth restriction (sFGR).
F. D'Antonio, D. Marinceu, S. Prasad, N. Eltaweel, A. Khalil   +4 more
wiley   +1 more source

La Paradoja de los gemelos en los textos de Einstein

Revista Colombiana de Filosofía de la Ciencia, 2020
La solución clásica de la paradoja de los gemelos está basada en que hay una asimetría entre sistemas de referencia acelerados e inerciales. Esta solución tradicional señala que únicamente el gemelo en la nave experimenta los efectos relativistas y, por ...
Martín Miguel Simesen de Bielke
doaj   +1 more source

Groundwater mapping and locally engaged water governance in a small island terrain: Case study of Karainagar island, Northern Sri Lanka

World Water Policy, Volume 9, Issue 3, Page 456-480, August 2023., 2023
Abstract Groundwater is a vital resource under threat in island communities. Karainagar, a 22 km2 island, is one of seven islands off the coast of Jaffna in Northern Sri Lanka, with its population of just about 11,000 persons, experiences seasonal water shortage, and salinity in groundwater as twin threats impacting on their lives.
Inthirakumaran Karthiga, Ponnambalam Rameshwaran, Balachandran Ketheesan, Nadarajah Sriskandarajah   +3 more
wiley   +1 more source

Adverse outcome following selective termination of presenting twin vs non‐presenting twin

Ultrasound in Obstetrics &Gynecology, Volume 61, Issue 6, Page 705-709, June 2023., 2023
ABSTRACT Objective Data are lacking on the impact on pregnancy outcome of the position of the abnormal fetus in a discordant twin pregnancy undergoing selective termination (ST). Tissue maceration post ST of the presenting twin may lead to early rupture of membranes, amnionitis and preterm labor.
H. Miremberg, H. Rosen, B. Weisz, D. Tirosh, R. Hershkovitz, S. Stern, S. Porat, B. Beloshevski, Y. Melcer, Y. Goldberg, N. Boms Yonai, M. Awawdeh, Z. Leibovitz, J. Shalev, L. Gindes   +14 more
wiley   +1 more source

Darwin’s finches habitually anoint their feathers with leaves of the endemic tree Psidium galapageium during the non‐breeding season

Ethology, Volume 127, Issue 10, Page 914-924, October 2021., 2021
Our study revealed that four species of Darwin's finches habitually anoint their feathers with leaves of the endemic tree Psidium galapageium, which contain volatiles with anti‐parasitic properties. We observed anointing most frequently in the morning when leaves are still wet and probably omit more volatiles.
Sabine Tebbich, Timo Schwemhofer, Barbara Fischer, Courtney Pike   +3 more
wiley   +1 more source

La clonación humana y el problema de la identidad

Isegoría, 2015
El siguiente trabajo se propone indagar los problemas que la clonación humana acarrearía para la identidad, debido a que este concepto se ha erigido en uno de los principales argumentos para intentar fundamentar una prohibición de la mencionada práctica.
Santiago Gabriel Calise
doaj   +1 more source

Toxoplasmosis congénita en gemelos [PDF]

Revista chilena de infectología, 2020
Congenital toxoplasmosis in twin pregnancies is infrequent. We present the case of a monozygotic and monocorial twin pregnancy with maternal toxoplasmosis infection diagnosed at 33 weeks gestation by detecting reactive IgM and IgG and low avidity test for IgG.
Martín Brizuela, Eduardo Otero, Andrea Molina, Karina De Risio, Jimena Mariano, Gustavo Cañete   +5 more
openaire   +1 more source

Behavioural response to songs between genetically diverged allopatric populations of Darwin’s small tree finch in the Galápagos

Journal of Evolutionary Biology, Volume 34, Issue 5, Page 816-829, May 2021., 2021
Male song can signal species identity and male quality, and behavioural response to song can drive divergence or introgression. In this study, we describe clear differences in male song types and a weak signal of population genetic difference across two populations of small tree finch on two Galapagos Islands. Resident males responded to the song of an
Diane Colombelli‐Négrel, Sonia Kleindorfer   +1 more
wiley   +1 more source