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351 results for “Hypericum perforatum”
Kellogg Biological Station site, station Treatment SF, old field successional community, never tilled, study of aboveground net primary productivity of Hypericum perforatum in units of gramsPerMeterSquaredPerYear on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Kellogg Biological Station (KBS) contains aboveground net primary productivity of Hypericum perforatum measurements in gramsPerMeterSquaredPerYear units and were aggregated to a yearly timescale.
Kellogg Biological Station site, station Kellogg Biological Station, study of aboveground net primary productivity of Hypericum perforatum in units of gramsPerMeterSquaredPerYear on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Kellogg Biological Station (KBS) contains aboveground net primary productivity of Hypericum perforatum measurements in gramsPerMeterSquaredPerYear units and were aggregated to a yearly timescale.
Hypericum perforatum (Clusiaceae) - inflorescence - frontal view of flower
Image of Hypericum perforatum (Clusiaceae) - inflorescence - frontal view of flower
Hypericum perforatum (Clusiaceae) - inflorescence - frontal view of flower
Image of Hypericum perforatum (Clusiaceae) - inflorescence - frontal view of flower
Hypericum perforatum (Clusiaceae) - inflorescence - whole - unspecified
Image of Hypericum perforatum (Clusiaceae) - inflorescence - whole - unspecified
Hypericum perforatum (Clusiaceae) - inflorescence - ventral view of flower + perianth
Image of Hypericum perforatum (Clusiaceae) - inflorescence - ventral view of flower + perianth
Hypericum perforatum (Clusiaceae) - inflorescence - whole - unspecified
Image of Hypericum perforatum (Clusiaceae) - inflorescence - whole - unspecified
Hypericum perforatum (Clusiaceae) - inflorescence - frontal view of flower
Image of Hypericum perforatum (Clusiaceae) - inflorescence - frontal view of flower
Hypericum perforatum (Clusiaceae) - whole plant - in flower - general view
Image of Hypericum perforatum (Clusiaceae) - whole plant - in flower - general view
Hypericum perforatum (Clusiaceae) - whole plant - in flower - general view
Image of Hypericum perforatum (Clusiaceae) - whole plant - in flower - general view
The Acute Effect of Hypericum Perforatum on Short-Term Memory in Healthy Adults
ClinicalTrials.gov study NCT02862236. IPD Sharing: UNDECIDED. Countries: 1. Publications: 1.
Effects of Hypericum Perforatum Oil on Promoting Skin Recovery in Different Human Skin Damage Models
ClinicalTrials.gov study NCT03783819. IPD Sharing: UNDECIDED. Countries: 1. Publications: 13.
Data from: Comparative authentication of Hypericum perforatum herbal products using DNA metabarcoding, TLC and HPLC-MS
Many herbal products have a long history of use, but there are increasing concerns over product efficacy, safety and quality in the wake of recent cases exposing discrepancies between labeling and constituents. When it comes to St. John's wort (Hypericum perforatum L.) herbal products, there is limited oversight, frequent off-label use and insufficient monitoring of adverse drug reactions. In this study, we use amplicon metabarcoding (AMB) to authenticate 78 H. perforatum herbal products and evaluate its ability to detect substitution compared to standard methods using thin-layer chromatography (TLC) and high performance liquid chromatography coupled with mass spectrometry (HPLC-MS). Hypericum perforatum was detected in 68% of the products using AMB. Furthermore, AMB detected incongruence between constituent species and those listed on the label in all products. Neither TLC nor HPLC-MS could be used to unambiguously identify H. perforatum. They are accurate methods for authenticating presence of the target compounds, but have limited efficiency in detecting infrageneric substitution and do not yield any information on other plant ingredients in the products. Random post-marketing AMB of herbal products by regulatory agencies could raise awareness among consumers of substitution and would provide an incentive to manufacturers to increase quality control from raw ingredients to commercialized products.
Hypericum perforatum L. var. angustifolium DC. (BR0000012080069)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Hypericum perforatum L. (BR0000012068722)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Hypericum perforatum L. (BR0000012068845)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Hypericum perforatum L. (BR0000012069910)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Hypericum perforatum L. (BR0000012194551)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Hypericum perforatum L. (BR0000012069477)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
Hypericum perforatum L. (BR0000012069934)
Belgium Herbarium image of <a href="https://www.plantentuinmeise.be">Meise Botanic Garden</a>.
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