Search results for "bats"
showing 10 items of 51 documents
Qüestions sòcio-científiques i debats per a millorar l'argumentació en classes de Física i Química
2017
En aquesta investigació s’estudia l’ús de les qüestions sòcio-científiques i els debats per a millorar l’argumentació a les classes de Física i Química. Els problemes que s’aborden al llarg de l’estudi són: Quines habilitats argumentatives en ciència tenen els alumnes d’ESO i Batxillerat? En quina mesura l’ensenyament tradicional de la Física i Química potencia l’habilitat argumentativa dels alumnes? Pot la realització de debats sòcio-científics millorar aquesta habilitat? Per a donar resposta a les dos primeres preguntes a manera de diagnòstic es proposa la següent primera hipòtesi: Els alumnes de Secundària tenen un baix nivell d’habilitat argumentativa perquè l’argumentació és un procedi…
Gravitational Waves and Gamma-Rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
2017
On 2017 August 17, the gravitational-wave event GW170817 was observed by the Advanced LIGO and Virgo detectors, and the gamma-ray burst (GRB) GRB 170817A was observed independently by the Fermi Gamma-ray Burst Monitor, and the Anticoincidence Shield for the Spectrometer for the International Gamma-Ray Astrophysics Laboratory. The probability of the near-simultaneous temporal and spatial observation of GRB 170817A and GW170817 occurring by chance is $5.0\times 10^{-8}$. We therefore confirm binary neutron star mergers as a progenitor of short GRBs. The association of GW170817 and GRB 170817A provides new insight into fundamental physics and the origin of short gamma-ray bursts. We use the ob…
IMPORTANCE OF BAT UNDERGROUND ROOSTS AND LONG-TERM CHANGES OF BAT POPULATIONS IN LATVIA
2013
Anotācija Darbā aplūkotas trīs tēmas: sikspārņu ziemošanas mītņu raksturojums, šo mītņu izmantošana dažādās sezonās un ziemojošo un migrējošo sikspārņu populāciju skaita izmaiņas. Analizēti 35 gadu laikā Latvijā ievākti dati par 994 ziemojošo sikspārņu sugu izmantotajām ziemas mītnēm. Izvērtēta šo mītņu nozīmība dažādām ziemojošajām sikspārņu sugām un aplūkota to izmantošana citās sezonās. Vislielākā sikspārņu sugu daudzveidība konstatēta alās, vislielākās ziemojošo sikspārņu populācijas – fortu tipa mītnēs un – divām sugām - mazajos piemāju pagrabos. Konstatēts, ka sikspārņi izmanto ziemošanas mītnes visa gada garumā. Divām sugām aprēķināts mazajos piemāju sakņu pagrabos ziemojošās populāc…
L'impact méconnu des chauves-souris et du guano dans l'évolution morphologique tardive des cavernes
2016
The little known impact of bats and bat guano in the late stages of cave morphogenesis. Bats are considered as symbolic caves inhabitants. The colonies, sometimes huge, may occupy caves through long periods. Large guano deposits were accumulated. Some have been mined for phosphates, either by hand or at the industrial scale. Bats impact is triple: breathing releases CO2, urine is corrosive, and guano mineralization releases acids (carbonic, nitric, sulfuric, and phosphoric). Such aggressive compounds have an effect on carbonate rock and flowstones, either by direct ground corrosion at the contact of the guano, or by condensation-corrosion on walls and ceilings. The speleogenetic impact of t…
Spinal epidural abscess due to acute pyelonephritis
2022
Background: Spinal epidural abscesses are rare and are misdiagnosed in up to 75% of cases. Fever, back pain, and neurological deficits are part of the classical triad. Here, the authors report a patient with a L2–L5 spinal epidural abscess with the left paravertebral extension attributed to acute pyelonephritis. Case Description: A 54-year-old female presented with persistent low back pain and lower extremity weakness accompanied by paresthesias. Previously, she had been hospitalized with the left acute pyelonephritis. The lumbosacral MRI documented a T12/L5 anterior epidural abscess with ring enhancement on the contrast study; the maximum diameter of the abscess at the L2–L3 level contrib…
Contrasting Effects of Chronic Anthropogenic Disturbance on Activity and Species Richness of Insectivorous Bats in Neotropical Dry Forest
2022
For prioritizing conservation actions, it is vital to understand how ecologically diverse species respond to environmental change caused by human activity. This is particularly necessary considering that chronic human disturbance is a threat to biodiversity worldwide. Depending on how species tolerate and adapt to such disturbance, ecological integrity and ecosystem services will be more or less affected. Bats are a species-rich and functionally diverse group, with important roles in ecosystems, and are therefore recognized as a good model group for assessing the impact of environmental change. Their populations have decreased in several regions, especially in the tropics, and are threatene…
Forecasting Electricity Consumption and Production in Smart Homes through Statistical Methods
2022
Abstract Over the last years, a steady increase in both domestic electricity consumption and in the adoption of personal clean energy production systems has been observed worldwide. By analyzing energy consumption and production on photovoltaic panels mounted in a house, this work focuses on finding patterns in electrical energy consumption and devising a predictive model. Our goal is to find an accurate method to predict electrical energy consumption and production. Being able to anticipate how consumers will use energy in the near future, homeowners, companies and governments may optimize their behavior and the import and export of electricity. We evaluated the ARIMA and TBATS statistical…
Mecanismes dialògics en debats públics
2020
Pretenem fer alguns comentaris sobre el significat de debat públic recollint-ne algunes de les característiques, alguns dels elements i, en particular, el paper que els arguments exerceixen en els mecanismes dialògics inclosos en els debats.
Quelle politique pour la culture ? Florilège des débats 1955-2014
2014
International audience
Non-destructive determination of ‘Big Bang’ nectarine quality and harvest maturity
2021
In nectarines, potential shelf life and quality at consumption are closely related to the ripeness stage of fruit at harvest. Usually, the harvest is based on color, firmness, sugar and acids content of fruit, although these determinations are carried out through destructive methods and in a limited number of samples. The technique of Vis/Nir spectroscopy is used for the development of a non-destructive index based on the difference of absorbance (IDA) between two wavelengths near the absorption peak of chlorophyll-a, and it allows monitoring of changes in ripeness processes directly in the field. The objective of this paper is to track changes in quality that occur during nectarine ripenes…