Results 21 to 30 of about 1,708 (164)
EFSA Journal, Volume 20, Issue 6, June 2022., 2022 Abstract Following a request from the European Commission, the Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the re‐evaluation of the authorisation of Sepiolitic clay as a feed additive for all animal species.
EFSA Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) +27 more
wiley +1 more source
En torno al proteccionismo hullero: notas a unas lecturas [PDF]
, 1986 Publicad
Sudriá, Carles, Carles Sudria
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Competir en los mercados internacionales. Altos Hornos de Vizcaya, 1882-1936 [PDF]
, 2003 Editada en la Fundación SEPIEl propósito de este trabajo es el de proporcionar un análisis comparativo de la actuación empresarial productiva de la moderna industria siderúrgica española desde sus inicios hasta la Guerra Civil Española.
Houpt, Stefan, Stefan Houpt
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Limited biomass recovery from gold mining in Amazonian forests
Journal of Applied Ecology, Volume 57, Issue 9, Page 1730-1740, September 2020., 2020 To achieve large‐scale restoration targets, Guyana and other Amazonian countries will be challenged to remediate previously mined lands. The recovery process is highly dependent on nitrogen availability rather than mercury contamination, affecting woody biomass regrowth.
Michelle Kalamandeen +14 more
wiley +1 more source
Ecology and Evolution, Volume 10, Issue 11, Page 5056-5068, June 2020., 2020 Comparative assessment of the relative information content of opportunistic historical records and survey data was conducted for Hispaniolan solenodon and Hispaniolan hutia, to evaluate whether these different data types provide congruent predictions of species distributions. Correlation between survey models and opportunistic models is only moderately
Samuel T. Turvey +4 more
wiley +1 more source
La minería del carbón nacional [PDF]
, 1960 El interés por el aprovechamiento del carbón mineral de nuestro subsuelo ya se puso de manifiesto en los albores de la nacionalidad, cuando en el año 1813 la Asamblea sancionó la ley para fomento de la minería, en la que se contemplaba declarar ...
Bergmann, Federico A. J.
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La relación entre la calidad y empleo del carbón en el Perú
, 1992 La minería e industria del carbón en el Perú, a pesar de tener un siglo de historia, se encuentran en la etapa inicial de su desarrollo, en la cual hay que forjar nuevos métodos y ...
Dunin Borkowski, Estanislao +1 more
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Scientists’ warning on the global destruction of rock outcrop ecosystems
Conservation Biology, EarlyView.Abstract Rock outcrops are geological formations that harbor a highly specialized biota adapted to harsh environmental conditions that differ from their surrounding landscapes. They are globally distributed, especially in old, highly weathered landscapes, and can function as habitat islands containing high levels of endemism and distinct evolutionary ...
Luiza F. A. de Paula +19 more
wiley +1 more source
Barcos, carbón y mineral de hierro. Los vapores de Sota y Aznar y los orígenes de la moderna flota mercante de Bilbao, 1889-1900 [PDF]
, 1991 Publicad
Torres Villanueva, Eugenio
core
EL CONOCIMIENTO SOBRE EL CARBÓN Y SU MINERÍA EN FILIPINAS (1840-1860)
, 2022 La incipiente minería del carbón en Filipinas a mediados del siglo xix necesitaba una variedad de conocimientos para poder distinguir los diferentes tipos de carbón.
Wendt, Helge
core +1 more source