Results 11 to 20 of about 53,669 (161)

Strategy of Coniferous Needle Biorefinery into Value-Added Products to Implement Circular Bioeconomy Concepts in Forestry Side Stream Utilization

open access: yesMolecules, 2023
Sustainable development goals require a reduction in the existing heavy reliance on fossil resources. Forestry can be considered a key resource for the bioeconomy, providing timber, energy, chemicals (including fine chemicals), and various other products.
Linards Klavins   +7 more
doaj   +1 more source

On the Representation of the Lattices of the Algebraic Sets of the Universal Algebras

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2019
The concept of an algebraic set is a basic concept of the classical algebraic geometry over fields. This concept, along with the concept of an algebraic lattice of algebraic sets is the basic concept of so-called algebraic geometry of universal algebras.
A.G. Pinus
doaj   +1 more source

Consideration of cumulative effects in concrete structures at low temperatures impact

open access: yesMATEC Web of Conferences, 2018
The design of reinforced concrete elements for a determined service life in severe climatic conditions should provide an additional resilience resource in accordance with their serviceability limit state. For its statistical justification, it is proposed
Pinus Boris
doaj   +1 more source

PALYNOLOGICAL STUDIES FOR SOME CULTIVATED SPECIES OF PINUS L., 1753 (PINALES, PINACEAE) IN EGYPT

open access: yesBulletin of the Iraq Natural History Museum, 2023
Pollen grains of the five cultivatedspecies ofPinusL.,1753 from Subsect. Pinaster(Order Pinales, Family Pinaceae) were collected from the Orman Botanic Gardens at Giza in addition to the herbarium specimens.
Asmaa Khamis, Rim Hamdy
doaj   +1 more source

MAPA DOS PRODUTORES BRASILEIROS DE BIOCOMBUSTÍVEIS PELLETS

open access: yesRevista Brasileira de Engenharia de Biossistemas, 2018
Os pellets são biocombustíveis que podem ser produzidos a partir de resíduos lignocelulósicos como o bagaço da cana-de-açúcar, serragem ou maravalha de madeira.
D. P. Garcia   +6 more
doaj   +1 more source

Avaliação do desempenho de ensaio não destrutivo em vigas de madeira de Eucalyptus citriodora e Pinus elliottii Assessment of the performance of non destructive tests in beams of Eucalyptus citriodora and Pinus eliottii wood

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2000
A madeira sempre foi e continua sendo importante material, quer seja para uso na construção civil ou na confecção de móveis; entretanto, o Brasil sempre foi marcado pelo desmatamento indiscriminado e pela falta de preocupação com a preservação e ...
Raquel Gonçalves, André Bartholomeu
doaj   +1 more source

A comparative study of the needle folded mesophyll in Pinus and Cedrus (Pinaceae) species

open access: yesИзвестия высших учебных заведений. Поволжский регион: Естественные науки, 2022
Background. The structure of the assimilatory tissue of the leaves at conifers studied mainly on cross-sections. The purpose of the study is to compare the features of the 3D forms of assimilative cells and the structure of the needle mesophyll in the ...
G.K. Zvereva
doaj   +1 more source

FAKTOR PENENTU KEMISKINAN PETANI PENYADAP GETAH PINUS DI DESA SOMAGEDE, KEBUMEN, JAWA TENGAH

open access: yesJurnal Penelitian Sosial dan Ekonomi Kehutanan, 2014
Masyarakat sekitar hutan umumnya berada dalam kemiskinan dan keterbelakangan. Peningkatan kemiskinan akan berdampak pada perusakan sumberdaya hutan.
S. Andy Cahyono   +3 more
doaj   +1 more source

Análisis Comparativo de dos Panoramas Económicos en el Desarrollo de un Proyecto de Inversión para el Ejido Forestal Cieneguita de la Barranca, Chihuahua

open access: yesRevista Biológico Agropecuaria Tuxpan, 2019
El ejido Cieneguita de la Barranca cuenta con una posibilidad anual de 2,357.50 metros cúbicos rollo total árbol (m3 RTA) del género Pinus, en el año 2019 la comunidad consolidó un contrato de compra de madera en rollo de pino con el ejido Munerachi por
Joel Rascón Solano   +4 more
doaj   +1 more source

Leaf Essential Oil Compositions and Enantiomeric Distributions of Monoterpenoids in Pinus Species: Pinus albicaulis, Pinus flexilis, Pinus lambertiana, Pinus monticola, and Pinus sabiniana

open access: yesMolecules
Members of the Pinus genus are well known for their medicinal properties, which can be attributed to their essential oils. In this work, we have examined the leaf essential oils of five understudied Pinus species collected from various locations in western North America.
Alicia Moore   +5 more
openaire   +3 more sources

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