Argentinean pejerrey (Odonthestes bonariensis) : artificial feeding

Para comprobar la factibilidad de la alimentación artificial del pejerrey con pienso balanceado pelletizado y aproximar el porcentaje de proteína en la formulación se realizó un ensayo con cuatro tratamientos: testigo (T) sin alimento artificial, alimento de 24 % (P1), 32 % (P2) y 42 % de proteína (P3). Para ello se realizaron cuatro jaulas de 4x4 m, ubicadas en una represa de la zona de Tunuyán, provincia de Mendoza. En cada jaula se colocaron 100 pejerreyes de un peso medio de 64,8 gramos. Luego de tres me-ses de encierre y diez días de adaptación a la dieta, se alimentaron P1, P2 y P3 con una ración de 1 g por pez/día en 40 días. Los peces de estas parcelas aumentaron un pro-medio de 7,7 g/pez.día 40 días, mientras que los testigos bajaron 7,9 g/por pez en el mis-mo período. Dividiendo a los peces en categorías se pudo determinar que los de mayor tamaño crecían más. Los peces con pesos iniciales medios de 83,5; 60,3 y 47,8 g lograron un aumento de peso medio promedio respectivamente de 8,4; 2,6 y -3,2 g, con un máximo de aumento de 17,8 g en el caso de P1 y con pejerreyes de 78,3 g de peso. No se pudo realizar repeticiones ni prueba estadística debido a la mortandad producida por pájaros pescadores. Se puede afirmar que los pejerreyes toleran el encierro (7,8 peces/m3) y el manejo y aceptan los alimentos balanceados pelletizados, sobre todo los peces de peso vivo superior a 60 g.W ith the p urpo se o f verifyin g th e factibility of artificial feeding of «pejerrey» with balanced pelletized feed and approximating protein percentage in the feed formula, a trial was carried out with four treatments: control (T) without artificial feed, 24 % (P1), 32 % (P2), 42 % (P3) protein feed. Four 4x4 m cages were made and placed in a dam of Tunuyan zone in the province of Mendoza. One hundred pejerreyes 64,8 average weight was placed in each cage, and after a three month confinement adaptation period, and ten days of balanced diet, three lots were fed with a ration of 1 g/day/fish. These fishes gained an average weight of 7.7g/day in 40 days while the control group lost 7.9 g per fish in the same period. The fishes were classified according to weight. It could be reached the conclusion that heavier fishes grew up more. Initial 83.5; 60.3 and 47.8 average weight fishes gained 8.4, 2.6 and -3.2 g weight respectively, with a maximum of weigh t gain o f 17 .8 g in 7 8.3g weigh t pejerreyes of P1. Neither repetitions nor statistical analysis could be done because of the high mortality due to fishing birds. The pejerreyes tolerated confinement (7,8 fishes/m3) and handling well and accepted the arti-ficial feed.Fil: Tacchini, Fabio M. . Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Allende, Gabriel M. . Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Linares, Christian D. . Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Martínez, Gustavo M. . Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción Agropecuari

Experimental Falsification of Leggett's Non-Local Variable Model

Bell's theorem guarantees that no model based on local variables can reproduce quantum correlations. Also some models based on non-local variables, if subject to apparently "reasonable" constraints, may fail to reproduce quantum physics. In this paper, we introduce a family of inequalities, which allow testing Leggett's non-local model versus quantum physics, and which can be tested in an experiment without additional assumptions. Our experimental data falsify Leggett's model and are in agreement with quantum predictions.Comment: 5 pages, 3 figures, 1 tabl

Absolute emission rates of Spontaneous Parametric Down Conversion into single transverse Gaussian modes

We provide an estimate on the absolute values of the emission rate of photon pairs produced by spontaneous parametric down conversion in a bulk crystal when all interacting fields are in single transverse Gaussian modes. Both collinear and non-collinear configurations are covered, and we arrive at a fully analytical expression for the collinear case. Our results agree reasonably well with values found in typical experiments, which allows this model to be used for understanding the dependency on the relevant experimental parameters.Comment: RevTeX, 7 pages, 4 figures; this version has a short section discussing ratios between pump and target waist

Hallmarks of the tumour microenvironment of gliomas and Its interaction with emerging immunotherapy modalities

Gliomas are aggressive, primary central nervous system tumours arising from glial cells. Glioblastomas are the most malignant. They are known for their poor prognosis or median overall survival. The current standard of care is overwhelmed by the heterogeneous, immunosuppressive tumour microenvironment promoting immune evasion and tumour proliferation. The advent of immunotherapy with its various modalities—immune checkpoint inhibitors, cancer vaccines, oncolytic viruses and chimeric antigen receptor T cells and NK cells—has shown promise. Clinical trials incorporating combination immunotherapies have overcome the microenvironment resistance and yielded promising survival and prognostic benefits. Rolling these new therapies out in the real-world scenario in a low-cost, high-throughput manner is the unmet need of the hour. These will have practice-changing implications to the glioma treatment landscape. Here, we review the immunobiological hallmarks of the TME of gliomas, how the TME evades immunotherapies and the work that is being conducted to overcome this interplay

Multi-disciplinary efforts to evaluate the therapeutic potential of CDK11, a novel transcription associated cyclin dependent kinase.

View full abstracthttps://openworks.mdanderson.org/leading-edge/1043/thumbnail.jp

A well-kept treasure at depth: precious red coral rediscovered in Atlantic deep coral gardens (SW Portugal) after 300 years

The highly valuable red coral Corallium rubrum is listed in several Mediterranean Conventions for species protection and management since the 1980s. Yet, the lack of data about its Atlantic distribution has hindered its protection there. This culminated in the recent discovery of poaching activities harvesting tens of kg of coral per day from deep rocky reefs off SW Portugal. Red coral was irregularly exploited in Portugal between the 1200s and 1700s, until the fishery collapsed. Its occurrence has not been reported for the last 300 years.info:eu-repo/semantics/publishedVersio

High-frequency variability in neutron-star low-mass X-ray binaries

Binary systems with a neutron-star primary accreting from a companion star display variability in the X-ray band on time scales ranging from years to milliseconds. With frequencies of up to ~1300 Hz, the kilohertz quasi-periodic oscillations (kHz QPOs) represent the fastest variability observed from any astronomical object. The sub-millisecond time scale of this variability implies that the kHz QPOs are produced in the accretion flow very close to the surface of the neutron star, providing a unique view of the dynamics of matter under the influence of some of the strongest gravitational fields in the Universe. This offers the possibility to probe some of the most extreme predictions of General Relativity, such as dragging of inertial frames and periastron precession at rates that are sixteen orders of magnitude faster than those observed in the solar system and, ultimately, the existence of a minimum distance at which a stable orbit around a compact object is possible. Here we review the last twenty years of research on kHz QPOs, and we discuss the prospects for future developments in this field.Comment: 66 pages, 37 figures, 190 references. Review to appear in T. Belloni, M. Mendez, C. Zhang, editors, "Timing Neutron Stars: Pulsations, Oscillations and Explosions", ASSL, Springe

Measurement of the prompt J/psi and psi(2S) polarizations in pp collisions at sqrt(s) = 7 TeV

The polarizations of prompt J/psi and psi(2S) mesons are measured in proton-proton collisions at sqrt(s) = 7 TeV, using a dimuon data sample collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 4.9 inverse femtobarns. The prompt J/psi and psi(2S) polarization parameters lambda[theta], lambda[phi], and lambda[theta, phi], as well as the frame-invariant quantity lambda(tilde), are measured from the dimuon decay angular distributions in three different polarization frames. The J/psi results are obtained in the transverse momentum range 14 < pt < 70 GeV, in the rapidity intervals abs(y) < 0.6 and 0.6 < abs(y) < 1.2. The corresponding psi(2S) results cover 14 < pt < 50 GeV and include a third rapidity bin, 1.2 < abs(y) < 1.5. No evidence of large transverse or longitudinal polarizations is seen in these kinematic regions, which extend much beyond those previously explored