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203 results for “Hemp”
The Antioxidant and Neuroprotective Potential of Leaves and Inflorescences Extracts of Selected Hemp Varieties Obtained with scCO2
<p>Article, Dataset for the article</p> <p> </p> <h2>Abstract</h2> <div><span>Cannabis sativa</span>, a versatile plant with numerous varieties, holds promising potential for a wide range of biological activity. As raw materials for research, we chose leaves and inflorescences of hemp varieties such as Białobrzeskie, Henola, and Tygra, which are cultivated mainly for their fibers or seeds. The choice of extraction is a key step in obtaining the selected compositions of active compounds from plant material. Bearing in mind the lipophilic nature of cannabinoids, we performed supercritical carbon dioxide (scCO<sub>2</sub>) extraction at 50 °C under 2000 (a) and 6000 PSI (b). The cannabinoid contents were determined with the use of the HPLC-DAD method. The antioxidant capabilities were assessed through a series of procedures, including the DPPH, ABTS, CUPRAC, and FRAP methods. The capacity to inhibit enzymes that play a role in the progression of neurodegenerative diseases, such as acetylcholinesterase (AChE), butyrylcholinesterase (BChE), and tyrosinase was also studied. The dominant cannabinoids in the extracts were cannabidiol (CBD) and cannabidiolic acid (CBDA). The highest concentration of eight cannabinoids was detected in the Tygra inflorescences extract (b). The most notable antioxidant properties were provided by the Tygra inflorescences extract (b). Nonetheless, it was the Henola inflorescences extract (b) that demonstrated the most efficient inhibition of AChE and BChE, and tyrosinase was inhibited the most significantly by the Białobrzeskie inflorescences extract (b). Multidimensional comparative analysis enrolled all assays and revealed that the Henola inflorescences extract (b) showed the most substantial neuroprotective potential.</div> <div> <div> <div>Keywords: </div> <a href="https://www.mdpi.com/search?q=Cannabis+sativa"><span>Cannabis sativa</span></a>; <a href="https://www.mdpi.com/search?q=antioxidant">antioxidant</a>; <a href="https://www.mdpi.com/search?q=neuroprotection">neuroprotection</a></div> </div>
Data for Nonequilibrium Process of Conduction Electrons on HEMP
<p>Data for the manuscript Nonequilibrium Process of Conduction Electrons on the High-altitude Electromagnetic Pulse</p>
Phylogenomic analysis of the hemp family (Cannabaceae) reveals deep cyto-nuclear discordance and provides new insights into generic relationships
Open the record for dataset details and reuse information.
Improved antibacterial activity of hemp fibres by covalent grafting of quaternary ammonium groups
<p><span><span>In this study, novel antibacterial hemp fibres grafted with </span></span>quaternary<span><span> ammonium groups, named HF-GTA, were prepared by alkalisation, oxidation, amination, and quaternisation multistage reactions. The chemical structure and micromorphology of the fibres were characterised by Fourier-transform infrared spectroscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, thermogravimetric analysis, and X-ray diffraction. The grafting and reaction mechanisms were proved to be successful, which indicated that the grafting reaction primarily occurred on the </span></span>hydroxyl <span><span>groups of cellulose and hemicellulose in the hemp fibres, where they retained good fibrous morphology, thermal stability and hygroscopicity. The antibacterial activity of HF-GTA exhibited the best antibacterial activity, where the antibacterial ratios against <i><span>E. coli </span></i>and <i><span>S. aureus</span></i> were 95.41% and 99.64%, respectively. <span>E</span><span>ven </span><span>a</span><span>fter 30 times of washing</span><span>, </span><span>the antibacterial activity </span><span>wa</span><span>s</span><span> retained</span><span> at </span><span>89.78% and 91.12%</span><span>,</span><span> indicating that HF-GTA </span><span>wa</span><span>s</span><span> endowed with good washing resistance. </span>The antibacterial mechanism occurred because the electrostatic reaction reduced the electrochemical potential on the cell membrane, leading to the release of cytoplasmic substances and the dissolution of cells, thereby producing antibacterial activity. It would be significantly important to guarantee textile quality and prevent disease transmission. </span></span></p>
Supplementary material 1 from: Heller K-G, Hemp C (2024) Egg shape and size in Phaneropterinae and other Tettigonioidea (Orthoptera, Ensifera): A global review with new data. Journal of Orthoptera Research 33(1): 103-112. https://doi.org/10.3897/jor.33.116173
Supplementary material 1 from: Heller K-G, Hemp C (2024) Egg shape and size in Phaneropterinae and other Tettigonioidea (Orthoptera, Ensifera): A global review with new data. Journal of Orthoptera Research 33(1): 103-112. https://doi.org/10.3897/jor.33.116173
Supplementary material 2 from: Heller K-G, Hemp C (2024) Egg shape and size in Phaneropterinae and other Tettigonioidea (Orthoptera, Ensifera): A global review with new data. Journal of Orthoptera Research 33(1): 103-112. https://doi.org/10.3897/jor.33.116173
Supplementary material 2 from: Heller K-G, Hemp C (2024) Egg shape and size in Phaneropterinae and other Tettigonioidea (Orthoptera, Ensifera): A global review with new data. Journal of Orthoptera Research 33(1): 103-112. https://doi.org/10.3897/jor.33.116173
Fibre Identification Blind Test dataset: Images of longitudinal and cross-section views of hemp, nettle, and flax fibres
<p>Dataset produced by Denis Waudby while undertaking analysis of a sample of fibres presented to him as a blind test of a new fibre identification methodology designed to reduce subjectivity in fibre identification protocols for distinguishing bast fibres (specifically Hemp, Nettle, and Flax)</p>
Supplementary material 2 from: Heller K-G, Hemp C, Massa B, Kociński M, Warchałowska-Śliwa E (2018) Paraplangia sinespeculo, a new genus and species of bush-cricket, with notes on its biology and a key to the genera of Phaneropterinae (Orthoptera: Tettigonioidea) from Madagascar. Journal of Orthoptera Research 27(2): 143-153. https://doi.org/10.3897/jor.27.24243
Supplementary material 2 from: Heller K-G, Hemp C, Massa B, Kociński M, Warchałowska-Śliwa E (2018) Paraplangia sinespeculo, a new genus and species of bush-cricket, with notes on its biology and a key to the genera of Phaneropterinae (Orthoptera: Tettigonioidea) from Madagascar. Journal of Orthoptera Research 27(2): 143-153. https://doi.org/10.3897/jor.27.24243
Supplementary material 1 from: Heller K-G, Hemp C, Massa B, Kociński M, Warchałowska-Śliwa E (2018) Paraplangia sinespeculo, a new genus and species of bush-cricket, with notes on its biology and a key to the genera of Phaneropterinae (Orthoptera: Tettigonioidea) from Madagascar. Journal of Orthoptera Research 27(2): 143-153. https://doi.org/10.3897/jor.27.24243
Supplementary material 1 from: Heller K-G, Hemp C, Massa B, Kociński M, Warchałowska-Śliwa E (2018) Paraplangia sinespeculo, a new genus and species of bush-cricket, with notes on its biology and a key to the genera of Phaneropterinae (Orthoptera: Tettigonioidea) from Madagascar. Journal of Orthoptera Research 27(2): 143-153. https://doi.org/10.3897/jor.27.24243
Fig. 4 Afroanthracites males. a A in Topography and climatic fluctuations boosting speciation: biogeography and a molecular phylogeny of the East African genera Afroanthracites Hemp & Ingrisch and Afroagraecia Ingrisch & Hemp (Orthoptera, Tettigoniidae, Conocephalinae, Agraeciini)
Fig. 4 Afroanthracites males. a A. montium from the Mounts Kilimanjaro/Meru area. b A. usambariucs, West Usambara Mountains. c A. lutindi, Lutindi forest reserve, West Usambara Mountains. d A. viridis, East Usambara Mountains. e A. pseudodiscolor, Lutindi reserve. f A. discolor, Mazumbai forest reserve, West Usambara Mountains
Fig. 2 in Topography and climatic fluctuations boosting speciation: biogeography and a molecular phylogeny of the East African genera Afroanthracites Hemp & Ingrisch and Afroagraecia Ingrisch & Hemp (Orthoptera, Tettigoniidae, Conocephalinae, Agraeciini)
Fig. 2 Relationships among species of Afroanthracites and Afroagraecia inferred from both Bayesian and likelihood analysis based on the 16S rRNA-H3
Fig. 15 in Ecology, acoustics and chromosomes of the East African genus Afroanthracites Hemp & Ingrisch (Orthoptera, Tettigoniidae, Conocephalinae, Agraeciini) with the description of new species
Fig. 15 Power spectra of male calling songs of Afroanthracites species and of Afroagraecia brachyptera. a Species occurring syntopically at Lutindi. b Species occurring syntopically at Mazumbai. c Remaining species
Fig. 14 a in Ecology, acoustics and chromosomes of the East African genus Afroanthracites Hemp & Ingrisch (Orthoptera, Tettigoniidae, Conocephalinae, Agraeciini) with the description of new species
Fig. 14 a Correlation of mirror dimensions and b hind femur length with peak frequency of male calling song. Open symbols Afroagraecia brachyptera
Fig. 11 in Ecology, acoustics and chromosomes of the East African genus Afroanthracites Hemp & Ingrisch (Orthoptera, Tettigoniidae, Conocephalinae, Agraeciini) with the description of new species
Fig. 11 Isolated tegmina of Afroanthracites species and Afroagraecia brachyptera. Upper two lines—left tegmen, lower line—right tegmen. a A. usambaricus, b A. montium, c A. lutindi n. sp., d A. viridis, e A. pseudodiscolor n. sp., f A. discolor, g A. brachyptera. Scale=5 mm
Fig. 4 Male A. lutindi n in Ecology, acoustics and chromosomes of the East African genus Afroanthracites Hemp & Ingrisch (Orthoptera, Tettigoniidae, Conocephalinae, Agraeciini) with the description of new species
Fig. 4 Male A. lutindi n. sp., lateral view, note orange part of tenth abdominal tergite, orange clypeus and coloration of eyes and antennae
Single fibre analysis of hemp and flax fibres, with reference to place of cultivation, degree of roasting, process status (raw fibre, scutched fibre, combed fibre, UD laid fibre, spun fibre)
<p>The testing of hemp- and flax-based single fibres and semifinished products (UD Roving, Yarn) was carried out as part of the research project "alpine hemp 360°". The aim of the project was to develop hemp-based composite structures whose fibre reinforcement comes in the form of agricultural waste from small-scale farming in the Alpine region. The underlying thesis is that low-processed hemp bast fibres, pulled directly from the stalk, can achieve both the highest strength and the highest modulus of elasticity in the component. A ski and trekking pole was developed as a pilot application, which was subsequently launched on the market by the industrial partner LEKI 2023 in the form of a first pilot series "Hemp One Vario".</p><p>The results of the present study, which were developed in an early phase of the project, have shown that the performance assessment of fibre reinforcement in composites can only be achieved with difficulty by means of individual fibre testing (tensile test) or optical analysis (optical microscopy). Accordingly, methods for fibre length measurement and 3-point bending tests on rod-shaped composite samples were prioritized.</p><p>The project "alpine hemp 360°" was carried out by UIBK Research Intitute for Textile Chemistry and Textile Physics (scientific partner) , troi.composite components (company), Michael Halbfurter (farmer).</p><p>Funded by Land Tirol Forschung, Entwicklung und Innovation</p>
The Efficacy of Hemp-containing Cream Versus Placebo in the Treatment of Uremic Pruritus
ClinicalTrials.gov study NCT06159686. IPD Sharing: NO. Countries: 1. Publications: 1.
Anxiety Symptoms in Relation to Use of Hemp-derived, Full Spectrum Cannabidiol (CBD)
ClinicalTrials.gov study NCT05023759. IPD Sharing: YES. Countries: 2. Publications: 5.
Effects of Hemp Oil on Markers of Optimal Wellness, Stress Resilience and Recovery in Healthy Subjects
ClinicalTrials.gov study NCT04294706. IPD Sharing: UNDECIDED. Countries: 1. Publications: 1.
Androgenetic Alopecia Treatment Using Varin and Cannabidiol Rich Topical Hemp Oil: A Case Series
ClinicalTrials.gov study NCT04842383. IPD Sharing: NO. Countries: 1. Publications: 4.
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Allen Brain Atlas
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.