Growth stage and molybdenum treatment affect cadmium accumulation, antioxidant defence and chlorophyll contents in Cannabis sativa plant

The medicinal use of cannabinoids renewed the interest in industrial hemp (Cannabis sativa L.). The aim of this study was to evaluate the impact of growth stage and biomass fractions of seven industrial hemp genotypes. The study focused on biomass yield, content of cannabidiolic acid/cannabidiol (CBDA/CBD), cannabigerolic acid/cannabigerol (CBGA/CBG), and tetrahydrocannabinolic acid (THCA). The experiment was conducted in 2017 and 2018. The biomass samples were taken at the vegetative (S1), bud (S2), full-flowering (S3) and seed maturity stage (S4). Plants were fractionated into inflorescence, upper and lower leaves. The average inflorescence dry yield of genotypes Futura75, Fédora17, Félina32 and Ferimon ranged between 257.28 g m−2 to 442.00 g m−2, resulting in a maximum yield of CBDA at S4, with 4568.26 mg m−2, 6011.20 mg m−2, 4975.60 mg m−2 and 1929.60 mg m−2, respectively. CBGA was exclusively found in genotype Santhica27, with a maximum CBGA yield of 5721.77 mg m−2 in inflorescence at growth stage S4 and a dry weight yield of 408.99 g m−2. Although these industrial hemp genotypes are mainly cultivated for fibre and seed production, however, cannabinoids offer an additional value. For an optimized harvest result, yield of extractable material and overall yield of cannabinoids must be considered.

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Observations oh Nucleation and Growth of Voids in Nickel

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100069065 ◽

1970 ◽

Vol 28 ◽

pp. 414-415

Author(s):

J. L. Brimhall ◽

H. E. Kissinger ◽

B. Mastel

Keyword(s):

High Purity ◽

Growth Stage ◽

Elevated Temperatures ◽

Early Growth ◽

Nucleation And Growth ◽

Pure Nickel ◽

Different Temperatures ◽

Total Fluence ◽

Neutron Exposure ◽

Growth Of Voids

Some information on the size and density of voids that develop in several high purity metals and alloys during irradiation with neutrons at elevated temperatures has been reported as a function of irradiation parameters. An area of particular interest is the nucleation and early growth stage of voids. It is the purpose of this paper to describe the microstructure in high purity nickel after irradiation to a very low but constant neutron exposure at three different temperatures.Annealed specimens of 99-997% pure nickel in the form of foils 75μ thick were irradiated in a capsule to a total fluence of 2.2 × 1019 n/cm2 (E > 1.0 MeV). The capsule consisted of three temperature zones maintained by heaters and monitored by thermocouples at 350, 400, and 450°C, respectively. The temperature was automatically dropped to 60°C while the reactor was down.

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Cannabis und Schizophrenie

SUCHT - Zeitschrift für Wissenschaft und Praxis / Journal of Addiction Research and Practice ◽

10.1024/suc.2002.48.5.336 ◽

2002 ◽

Vol 48 (5) ◽

pp. 336-345 ◽

Cited By ~ 3

Author(s):

Jürgen Seifert ◽

Jann Schlimme ◽

Felix Wedegärtner ◽

Hinderk M. Emrich ◽

Udo Schneider

Keyword(s):

Cannabis Sativa ◽

Cannabinoid System ◽

Psychotische Störungen

Überblick: Cannabis sativa ist eine der ältesten medizinischen Heilpflanzen. In den westlichen Kulturen wird Cannabis überwiegend als Freizeitdroge angesehen. Im Harz sowie in den Blüten der weiblichen Pflanze findet sich ein Gemisch aus verschiedenen psychoaktiven Inhaltsstoffen. Am bedeutendsten ist in diesem Zusammenhang das delta-9-Tetrahy-drocannabinol. </P><P> Epidemiologie: Nicht selten werden die Gefahren des Cannabiskonsums, wie z. B. die Möglichkeit der Induktion einer Psychose unterschätzt. Wenn man jedoch berücksichtigt, wie häufig z. B. Jugendliche THC konsumieren, ist die Frage, ob Cannabis eine Psychose aus dem schizophrenen Formenkreis de novo induzieren kann, von besonderem gesundheitspolitischem und volkswirtschaftlichem Interesse. Die Datenlage ist allerdings nach wie vor unklar. Die klinisch-epidemiologischen Studien deuten aber darauf hin, dass Cannabiskonsum bei vulnerablen Personen schizophrenieforme Psychosen auslösen kann und einen ungünstigen Krankheitsverlauf zur Folge hat. </P><P> Das endogene Cannabinoid-System: Die vorliegende Arbeit gibt außerdem einen Überblick der Publikationen, die sich mit dem körpereigenen Cannabinoid- System und seinen endogenen Liganden im Hinblick auf psychotische Störungen beschäftigen.

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