Results 51 to 60 of about 13,000 (226)

ALCALOIDES BENCILISOQUINOLÍNICOS DEL TALLO DE Piper augustum Rudge

open access: yesRevista Colombiana de Química, 1998
Del extracto etanólico del tallo de P. augustum Rudge se aislaron: 3beta-hidroxi- 24-etil-delta5.22colestadieno (estigmasterol) I ; l,2-metilendioxi-6-metil-4H-dibenzo(deg) quinolina-4,5(6H)diona (Cepharadione A) II; lactama del ácido lO-amino-3,4- dimetoxifenantreno-1-carboxílico (Cepharanone B) n i y el nuevo compuesto natural: lactama del ácido N ...
Delgado A., Wilman   +2 more
openaire   +3 more sources

Evaluacion de la actividad antitumoral de extractos de hojas y tallos de niguito monochaetum multiflorum (bonpl.) naud. (melastomataceae) [PDF]

open access: yes, 2007
Las hojas y tallos de la planta Niguito (Monochaetum multiflorum) (Bonpl.) Naud., se homogenizaron en acetona acuosa al 70%. El homogenizado fue fraccionado secuencialmente por extracción líquido-líquido con Et2O, EtOAc, n-butanol.
González G., Maria L.   +2 more
core   +3 more sources

Cuantificación de flavonoides del extracto metanólico de hojas y tallos de verbena litoralis "verbena" [PDF]

open access: yes, 2023
La presente investigación realizada tuvo como objetivo Cuantificar flavonoides totales del extracto metanólico de hojas y tallos de Verbena litoralis “Verbena”.
Abanto Aguilar, Sandra Abigail
core  

PREDIKSI ALIRAN AIR PERMUKAAN DAS TALLO SULAWESI SELATAN

open access: yesJurnal Environmental Science, 2021
ABSTRAKTujuan penelitian ini untuk: 1. Yaitu untuk Mengetahui Karakterstik DAS Tallo Sulawesi Selatan. 2. Untuk mengetahui besar aliran air permukaan DAS Tallo Sulawesi Selatan. Sasaran dalam penelitian ini adalah DAS Tallo secara keseluruhan. Teknik pengumpulan data yang digunakan adalh teknik observasi, teknik dokumentasi, teknik analisis data ...
Suarni Suarni   +2 more
openaire   +2 more sources

Perspectives and behaviors surrounding planting practices in North America inform genetic conservation realities for American ginseng (Panax quinquefolius)

open access: yesPLANTS, PEOPLE, PLANET, Volume 8, Issue 6, Page 2192-2204, November 2026.
American ginseng is a shade‐obligate, North American medicinal plant that is widely traded and used internationally. To meet global demand, ginseng is cultivated in forest farms in the Appalachian region of the USA and field‐based artificial shade farms in two regions: Ontario, Canada and Wisconsin, USA. We conducted social research leveraging in‐depth
Rachel E. Palkovitz   +2 more
wiley   +1 more source

Gene turnover in the common ancestor of all C4 grasses

open access: yesPLANTS, PEOPLE, PLANET, Volume 8, Issue 6, Page 2217-2234, November 2026.
Understanding how plants evolve more efficient photosynthesis is important in a warming world where improving crop productivity and resilience is a global priority. By generating the first reference genomes for an early‐diverging group of grasses called the Aristidoideae, we were able to reconstruct the genetic makeup of the last common ancestor of all
Lara Pereira   +6 more
wiley   +1 more source

Mancha foliar de Mucor y micoflora en las lesiones de tallos y raíces del melocotón [PDF]

open access: yes, 2004
Fungi associated with root rot, stem canker, dieback, gummosis and leaf spots in young peach trees were isolated and identified. The most predominant fungi in the stem and root lesions were Fusarium solani and F. oxysporum. Dothiorella sp. was associated
Rodríguez, Rocío del P.
core   +1 more source

From traditional practice to unsustainable exploitation: Fruit overharvesting on the endangered relict palm Jubaea chilensis

open access: yesPLANTS, PEOPLE, PLANET, Volume 8, Issue 6, Page 2055-2060, November 2026.
Overharvesting of wild edible plants poses a growing threat to plant populations worldwide, particularly for slow‐growing species with limited regeneration. We quantified fruit extraction from the third‐largest known population of Jubaea chilensis—an endangered palm endemic to Chile—modeled the critical harvest threshold, and assessed consumer ...
Sebastián Cordero   +7 more
wiley   +1 more source

The Filippov-Wazewski relaxation theorem revisited [PDF]

open access: yes, 1999
The converse statement of the Filippov-Wazewski relaxation theorem is proven, more precisely, two differential inclusions have the same closure of their solution sets if and only if the right-hand sides have the same convex hull. The idea of the proof is
Joó, István   +3 more
core   +1 more source

Home - About - Disclaimer - Privacy