نتایج جستجو برای: hemp fibres

تعداد نتایج: 18172  

2006

Countries, such as France, Spain. China. India. Korea and satellite nations of the former Soviet Union have been cultivating industrial hemp for years. A 1961 United Nations Single Convention Treaty specifically allows cultivation of cannabis for industrial purposes. and the more recent NAFTA and GATT international trade agreements recognize hemp as a valid agricultural crop. These internationa...

2015
Incoronata Galasso Elena Ponzoni I. Galasso E. Ponzoni

Simple sequence repeat (SSR) or microsatellite markers, are a valuable tool for several purposes such as evaluation of genetic diversity, fingerprinting, marker assisted selection, and breeding. Recent developments in sequencing technologies and bioinformatics analyses provide new opportunity to produce a high number of less costly SSRs. Here, we used for the first time a wholegenome shotgun se...

Journal: :Molecules 2017
Chih-Wei Chang Ching-Chi Yen Ming-Tsang Wu Mei-Chich Hsu Yu-Tse Wu

Hemp nut is commonly incorporated into several food preparations; however, most countries set regulations for hemp products according to their cannabinoid content. In this study, we have developed an efficient microwave-assisted extraction (MAE) method for cannabinoids (i.e., Δ9-tetrahydrocannabinol, cannabidiol, and cannabinol) in hemp nut. Optimization of the MAE procedure was conducted throu...

2006
Shannon L. Datwyler George D. Weiblen

Cannabis sativa L. (Cannabaceae) is one of the earliest known cultivated plants and is important in the global economy today as a licit and an illicit crop. Molecular markers distinguishing licit and illicit cultivars have forensic utility, but no direct comparison of hemp and marijuana amplified fragment length polymorphism (AFLP) has been made to date. Genetic variation was surveyed in three ...

Journal: :Composites Part A-applied Science and Manufacturing 2021

This paper investigates the influence of stress level and hygrothermal conditions on creep/recovery behaviour three high-grade composites made GreenPoxy flax hemp fibres. The results show that levels instantaneous, time-delayed residual strains increase with applied load severity environment. materials are higher in creep phase than recovery phase. A stiffening effect is also observed during po...

Journal: :Journal of Marine Science and Engineering 2023

One sustainable method of removing oil spills is the use sorbents. In this study, aerogels made from paper waste and crosslinking starch are investigated as Aerogels have a high porosity and, thus, achieve sorption capacity. The compared with aerogel samples that also contain hemp fibres composite. After hydrophobisation methyltrimethoxysilane, maximum capacity crude oil, marine diesel lubricat...

Journal: :Agronomy 2021

Farmers’ interest in renewable raw materials such as hemp (Cannabis sativa L.) fibres has recently increased, but productivity is strongly affected by genotype and environment conditions. A 3-year field experiment was conducted under Mediterranean northern Greece to evaluate the (regarding seeds) of six monoecious varieties. The vars. Futura 75 Bialobrzeskie provided greatest (p < 0.01) fibr...

2009
A. D. Tran Le C. Maalouf E. Wurtz

Hemp concrete is more and more recommended by eco-builders because hemp is a renewable plant, recyclable and does not degrade within time. To integrate this material into buildings, it is important to study its hygrothermal behaviour. In this paper, two models have been investigated: a heat transfer model (Th) and a hygrothermal model accounting for heat and moisture transport through building ...

Journal: :Bioresource technology 2005
Ana Gutiérrez José C del Río

The composition of pitch deposits occurring in pulp sheets and mill circuits during soda/anthraquinone pulping and elemental chlorine-free pulp bleaching of bast fibers of industrial hemp (Cannabis sativa) was studied. Pitch deposits were extracted with acetone, and the extracts analyzed by gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS). Acetone extracts (15-25% of pit...

2012
Lisi Fan Haitao Liu Yun Wang

This paper presents an antenna of High altitude electromagnetic pulse (HEMP) radiating-wave simulator which expands the testing zone larger than the traditional transmission line simulator. The numerical results show that traverse electramagnetic (TEM) antenna can be used to radiate HEMP simulation radiating wave, but in low frequency band the emissive capability is poor. The experiment proves ...

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