Results 91 to 100 of about 572,200 (292)

A chronosequence of climosequences: The evolution of ecological soil thresholds in Hawaiian volcanic soils

open access: yesGeoderma
The soil-forming factors of climate and time directly influence mineral weathering, nutrient flow, and soil pedogenesis. Soil properties do not respond linearly to climate and time, but rather, follow a series of pedogenic thresholds that delimit soil ...
Thomas P. Haensel   +4 more
doaj   +1 more source

Studies on some Australian pottiaceous mosses [PDF]

open access: yes, 2002
Chionoloma bombayense (Müll. Hal.) P. Sollm. [syn. Pseudosymblepharis bombayensis (Müll. Hal.) P. Sollm.] and Syntrichia serrata (Dixon) R.H. Zander are reported new for Australia.
Sollman, Philip
core  

Terrestrial and fluvial carbon fluxes in a tropical watershed: Nyong basin, Cameroon [PDF]

open access: yes, 2009
The Nyong watershed, with an area of 27 800 km2 and a mean annual discharge of 390 m3 s−1, is the second largest river in Cameroon. The Nyong watershed serves as an outstanding study area for the examination of carbon fluxes in humid tropical ...
Boeglin, Jean-Loup   +6 more
core   +2 more sources

Cinnamic‐Hydroxamic‐Acid Derivatives Exhibit Antibiotic, Anti‐Biofilm, and Supercoiling Relaxation Properties by Targeting Bacterial Nucleoid‐Associated Protein HU

open access: yesAdvanced Science, EarlyView.
Cinnamic‐hydroxamic‐acid derivatives (CHADs) are identified as novel inhibitors of the bacterial nucleoid‐associated protein HU, exhibiting potent antibacterial, anti‐biofilm (both inhibition and eradication), and DNA relaxation (anti‐supercoiling) activities. Moreover, CHADs demonstrate strong synergistic effects with multiple antibiotics.
Huan Chen   +22 more
wiley   +1 more source

Tropical plants in health care delivery in Nigeria: Contributions of some members of compositae (Asteraceae)

open access: yesInternational Journal of Medicine and Health Development, 2002
Aim: To identify, review and highlight the contributions of some species of Compositae to health care of the Nigerian populace, especially in rural setting.
J C Okafor
doaj  

Unveiling the Catalytic Roles of DsBBS1 and DsBBS2 in the Bibenzyl Biosynthesis of Dendrobium sinense

open access: yesMolecules
Dendrobium sinense, an endemic medicinal herb in Hainan Island, is rich in bibenzyl compounds. However, few studies have explored the molecular mechanisms of bibenzyl biosynthesis.
Liyan Liu   +6 more
doaj   +1 more source

The Osteoblastic Microenvironment Determines the Fate of Breast Cancer Cells Disseminated in the Bone Marrow

open access: yesAdvanced Science, EarlyView.
This study revealed how the osteoblastic microenvironment determines the fate of cancer cells disseminated in bone, with a focus on whether they colonize, reside in quiescence, or reactivate from dormancy. Targeting integrin signaling may offer promising strategies for preventing quiescent cancer cells reactivation and bone colonization.
Hong‐Li Wang   +7 more
wiley   +1 more source

The Evolution of Lipidomics during Oil Accumulation of Plukenetia volubilis Seeds

open access: yesPlants
Sacha inchi (Plukenetia volubilis) is a valuable oilseed crop with a high content of polyunsaturated fatty acids (PUFAs). However, there is a lack of in-depth understanding of the lipidomics in Sacha inchi seeds (SIDs).
Yijun Fu   +7 more
doaj   +1 more source

Analysis of codon usage bias in the mitochondrial genome of Pleurozia purpurea [PDF]

open access: yesJournal of Hebei University of Science and Technology
In order to enrich the understanding of the genetic basis of the genus Pleurozia purpurea, the codon usage bias (CUB) in the mitochondrial genome of Pleurozia purpurea and its main influencing factors were investigated.
Mengxue DU   +5 more
doaj   +1 more source

On the occurrence of Pithophora oedogonia (Mont.) Wittr. var. polyspora Rendle et West fil (Cladophoraceae) in the pond of the Wroclaw Botanical Garden [Translation from: Fragmenta Floristica et Geobotanica 22 255-260, 1976] [PDF]

open access: yes, 1977
Species of Pithophora occasionally appear in Europe and are associated mostly with the tropical, higher water plants, cultivated in numerous botanical gardens. In June 1973 pale green, branched threads were discovered in the pond of the Wroclaw Botanical
Panek, E. S.
core  

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