WorldWideScience

Sample records for hemp ing phys

  1. Green insulation: hemp fibers

    Anon,

    2011-09-15

    Indian hemp (Cannabis indica) is known for its psychotropic values and it is banned in most countries. However, industrial hemp (Cannabis sativa) is known for its tough fibers. Several manufactures in Europe including, small niche players, have been marketing hemp insulation products for several years. Hemp is a low environmental impact material. Neither herbicide nor pesticide is used during the growth of hemp. The fibers are extracted in a waste-free and chemical-free mechanical process. Hemp can consume CO2 during its growth. In addition, hemp fiber can be disposed of harmlessly by composting or incineration at the end of its life. Hemp fibers are processed and treated only minimally to resist rot and fungal activity. There is little health risk when producing and installing the insulation, thanks to the absence of toxic additive. Its thermal resistance is comparable to mineral wool. But the development and marketing of hemp fibers may be restricted in North America.

  2. Hemp for textiles

    Westerhuis, W.

    2016-01-01

    Abstract

    Key words: Cannabis sativa L., day length sensitivity, fibre hemp, genotype, harvest time, plant density, plant weight, primary fibres, secondary fibres, sowing date, textiles.

    Westerhuis, W. (2016) Hemp for textiles: plant

  3. Hemp as an Agricultural Commodity

    2014-02-14

    passed laws restricting legal production to medicinal and industrial purposes only.42 The 1937 Marihuana Tax Act defined hemp as a narcotic drug...refers to industrial hemp, “marijuana” (or “ marihuana ” as it is spelled in the older statutes) refers to the psychotropic drug (whether used for... medicinal or recreational purposes), and “cannabis” refers to the plant species that has industrial, medicinal , and recreational varieties.1 Comparison of

  4. Hemp (Cannabis sativa L.).

    Feeney, Mistianne; Punja, Zamir K

    2015-01-01

    Hemp (Cannabis sativa L.) suspension culture cells were transformed with Agrobacterium tumefaciens strain EHA101 carrying the binary plasmid pNOV3635. The plasmid contains a phosphomannose isomerase (PMI) selectable marker gene. Cells transformed with PMI are capable of metabolizing the selective agent mannose, whereas cells not expressing the gene are incapable of using the carbon source and will stop growing. Callus masses proliferating on selection medium were screened for PMI expression using a chlorophenol red assay. Genomic DNA was extracted from putatively transformed callus lines, and the presence of the PMI gene was confirmed using PCR and Southern hybridization. Using this method, an average transformation frequency of 31.23% ± 0.14 was obtained for all transformation experiments, with a range of 15.1-55.3%.

  5. Hemp biofuel for automotive transport. Ukrainian perspective

    Kolodnytska R.V.

    2016-08-01

    Full Text Available Ukraine takes a fourth place in the world in the technical hemp production and can use waste of hemp for biofuel (including biodiesel production. This paper presents an analysis of cetane numbers and low-temperature properties of hemp biodiesels as well as spray and evaporation of these fuels. Two types of hemp biodiesel fuels are analyzed: Hemp Methyl esters, produced from hemp oil in Ukraine (HM1 and European Union (HM2. It was found that hemp biodiesel has smaller cetane number than traditional rapeseed or soy biodiesel. At the same time hemp biodiesel shows better low-temperature properties compared with traditional biodiesels. So, it was recommended to use the mixture of rapeseed or soy biodiesel with hemp biodiesel to optimise both the low-temperature properties and cetane number of fuel. According to modelling the spray parameters of hemp biodiesel are very close to those of soy biodiesel. Evaporation of hemp biodiesel is very close to soy biodiesel according to previous research. Therefore, mixture of soy/rapeseed and hemp biodiesels can be recommended for experimental investigation as a future fuel for Ukrainian market.

  6. Organosolv pulping and test paper characterization of fiber hemp

    Zomers, F.H.A.; Gosselink, R.J.A.; Dam, van J.E.G.; Tjeerdsma, B.F.

    1995-01-01

    The autocatalyzed ethanol pulping of hemp to produce chemical-grade pulp was examined. Batch delignification conditions were developed for hemp core, hemp bast, and hemp whole stem. Although successful pulping of both hemp core and bast fibre is possible, further research is necessary.

  7. Model(ing) Law

    Carlson, Kerstin

    The International Criminal Tribunal for the former Yugoslavia (ICTY) was the first and most celebrated of a wave of international criminal tribunals (ICTs) built in the 1990s designed to advance liberalism through international criminal law. Model(ing) Justice examines the case law of the ICTY...

  8. Engineering challenges in ING

    Wolfe, W A

    1965-07-01

    With the Intense Neutron Generator (ING) we intend to produce a neutron flux of 10{sup 16} n/cm{sup 2} sec. Bismuth, bombarded by 1 GeV protons, yields about 20 neutrons per proton with a heat output of 23 MeV/neutron. A circulating liquid bismuth target will dissipate about 34 MW of heat. To produce the beam we will accelerate protons in a separated orbit cyclotron. The 65 mA current will require about 70-75 MW of radio-frequency power (50-200 Mc/s). We must generate and transmit RF efficiently. In ING precise magnet-fields, resonating-cavity electric-fields and well maintained vacuum (10{sup -6} torr) will place demands on most of today's engineering technology. (author)

  9. Engineering challenges in ING

    Wolfe, W.A.

    1965-01-01

    With the Intense Neutron Generator (ING) we intend to produce a neutron flux of 10 16 n/cm 2 sec. Bismuth, bombarded by 1 GeV protons, yields about 20 neutrons per proton with a heat output of 23 MeV/neutron. A circulating liquid bismuth target will dissipate about 34 MW of heat. To produce the beam we will accelerate protons in a separated orbit cyclotron. The 65 mA current will require about 70-75 MW of radio-frequency power (50-200 Mc/s). We must generate and transmit RF efficiently. In ING precise magnet-fields, resonating-cavity electric-fields and well maintained vacuum (10 -6 torr) will place demands on most of today's engineering technology. (author)

  10. Ingénierie didactique

    Marty , Olivier

    2015-01-01

    Leçon 1 : introduction théoriqueLeçon 2 : concepts fondamentaux de l’ingénierie didactiqueLeçon 3 : construire une ingénierie pédagogiqueLa didactique professionnelle : autour d’un cas pratiqueLeçon 4 : gestion de l’ingénierie de formation; Master; Cours d'ingénierie didactique. Intervention du premier semestre 2015 dans le master Ingénierie de formation de l'université de Lille.Support progressivement mis à disposition des étudiants dans la plateforme d'enseignement à distance Accel (puis co...

  11. Microscopic Study on Hemp Bast Fibre Formation

    Hernandez, A.; Westerhuis, W.; Dam, van J.E.G.

    2007-01-01

    Commonly, fibre hemp (Cannabis sativa) is not considered for the production of soft and easy-care textiles. However, initial tests in the textile industry have shown that certain processes allow improvement in the everyday-wear characteristics of hemp textiles. In the framework of the EU R&D

  12. Water Absorption Behavior of Hemp Hurds Composites

    Stevulova, Nadezda; Cigasova, Julia; Purcz, Pavol; Schwarzova, Ivana; Kacik, Frantisek; Geffert, Anton

    2015-01-01

    In this paper, water sorption behavior of 28 days hardened composites based on hemp hurds and inorganic binder was studied. Two kinds of absorption tests on dried cube specimens in deionized water bath at laboratory temperature were performed. Short-term (after one hour water immersion) and long-term (up to 180 days) water absorption tests were carried out to study their durability. Short-term water sorption behavior of original hemp hurds composites depends on mean particle length of hemp and on binder nature. The comparative study of long-term water sorption behavior of composites reinforced with original and chemically modified hemp hurds in three reagents confirmed that surface treatment of filler influences sorption process. Based on evaluation of sorption curves using a model for composites based on natural fibers, diffusion of water molecules in composite reinforced with original and chemically modified hemp hurds is anomalous in terms of the Fickian behavior. The most significant decrease in hydrophility of hemp hurds was found in case of hemp hurds modified by NaOH and it relates to change in the chemical composition of hemp hurds, especially to a decrease in average degree of cellulose polymerization as well as hemicellulose content.

  13. Grow-ING, Age-ING and Die-ING: ING proteins link cancer, senescence and apoptosis

    Russell, Michael; Berardi, Philip; Gong Wei; Riabowol, Karl

    2006-01-01

    The INhibitor of Growth (ING) family of plant homeodomain (PHD) proteins induce apoptosis and regulate gene expression through stress-inducible binding of phospholipids with subsequent nuclear and nucleolar localization. Relocalization occurs concomitantly with interaction with a subset of nuclear proteins, including PCNA, p53 and several regulators of acetylation such as the p300/CBP and PCAF histone acetyltransferases (HATs), as well as the histone deacetylases HDAC1 and hSir2. These interactions alter the localized state of chromatin compaction, subsequently affecting the expression of subsets of genes, including those associated with the stress response (Hsp70), apoptosis (Bax, MDM2) and cell cycle regulation (p21 WAF1 , cyclin B) in a cell- and tissue-specific manner. The expression levels and subcellular localization of ING proteins are altered in a significant number of human cancer types, while the expression of ING isoforms changes during cellular aging, suggesting that ING proteins may play a role in linking cellular transformation and replicative senescence. The variety of functions attributed to ING proteins suggest that this tumor suppressor serves to link the disparate processes of cell cycle regulation, cell suicide and cellular aging through epigenetic regulation of gene expression. This review examines recent findings in the ING field with a focus on the functions of protein-protein interactions involving ING family members and the mechanisms by which these interactions facilitate the various roles that ING proteins play in tumorigenesis, apoptosis and senescence

  14. RegulatING chromatin regulators

    Satpathy, Shankha; Nabbi, Arash; Riabowol, Karl

    2013-01-01

    The five human ING genes encode at least 15 splicing isoforms, most of which affect cell growth, differentiation and apoptosis through their ability to alter gene expression by epigenetic mechanisms. Since their discovery in 1996, ING proteins have been classified as type II tumour suppressors on...

  15. Comparison of the cable coupling effects under two kinds of HEMP environment

    Sun Bei Yun; Xie Yan Zhao

    2002-01-01

    There are various kinds of HEMP environment definitions. The coupling effects of electronic system are more different under different HEMP environment. The responds of cable of different length are investigated under 1976 HEMP and 1996 HEMP environment. The results indicate that the cable coupling effects under 1976 HEMP environment are more serious than those under 1996 HEMP environment

  16. Elusloom lennukiga puhkusele / Inge Parring

    Parring, Inge

    2003-01-01

    Ilmunud ka: Delovõje Vedomosti 1. okt. lk. 13. Air Cargo Estonia/ACE Logisticsi müügijuht Inge Parring tutvustab elusloomade transpordivõimalusi. Vt. samas: Loomade transportimiseks vajalikud dokumendid

  17. HEMP emergency planning and operating procedures for electric power systems

    Reddoch, T.W.; Markel, L.C. (Electrotek Concepts, Inc., Knoxville, TN (United States))

    1991-01-01

    Investigations of the impact of high-altitude electromagnetic pulse (HEMP) on electric power systems and electrical equipment have revealed that HEMP creates both misoperation and failures. These events result from both the early time E[sub 1] (steep-front pulse) component and the late time E[sub 3] (geomagnetic perturbations) component of HEMP. In this report a HEMP event is viewed in terms of its marginal impact over classical power system disturbances by considering the unique properties and consequences of HEMP. This report focuses on system-wide electrical component failures and their potential consequences from HEMP. In particular, the effectiveness of planning and operating procedures for electric systems is evaluated while under the influence of HEMP. This assessment relies on published data and characterizes utilities using the North American Electric Reliability Council's regions and guidelines to model electric power system planning and operations. Key issues addressed by the report include how electric power systems are affected by HEMP and what actions electric utilities can initiate to reduce the consequences of HEMP. The report also reviews the salient features of earlier HEMP studies and projects, examines technology trends in the electric power industry which are affected by HEMP, characterizes the vulnerability of power systems to HEMP, and explores the capability of electric systems to recover from a HEMP event.

  18. New developments in fiber hemp (Cannabis sativa L.) breeding

    Salentijn, E.M.J.; Zhang, Qingying; Amaducci, Stefano; Yang, Ming; Trindade, L.M.

    2015-01-01

    Fiber hemp (Cannabis sativa L.) is a sustainable and high yielding industrial crop that can help to meet the high global demand for fibers. Hemp can be grown for fiber, seeds, and/or for dual purpose in a wide range of geographic zones and climates. Currently the main hemp producing regions in

  19. Agronomy and photosynthesis physiology of hemp (Cannabis sativa L.)

    Tang, Kailei

    2018-01-01

    Hemp (Cannabis sativa L.) is a sustainable high-yielding crop that delivers valuable fibres, seeds and psychoactive substances. However, there is a lack of field experimental data on the cultivation of hemp because its production was largely abandoned in the last century. Hemp is now

  20. Effect of pectin and hemicellulose removal from hemp fibres on the mechanical properties of unidirectional hemp/epoxy composites

    Liu, Ming; Meyer, Anne S.; Fernando, Dinesh

    2016-01-01

    The objective of this study was to investigate the effect of pectin and hemicellulose removal from hemp fibres on the mechanical properties of hemp fibre/epoxy composites. Pectin removal by EDTA and endo-polygalacturonase (EPG) removed epidermal and parenchyma cells from hemp fibres and improved...

  1. Key parameters analysis of hybrid HEMP simulator

    Mao Congguang; Zhou Hui

    2009-01-01

    According to the new standards on the high-altitude electromagnetic pulse (HEMP) developed by International Electrotechnical Commission (IEC), the target parameter requirements of the key structure of the hybrid HEMP simulator are decomposed. Firstly, the influences of the different excitation sources and biconical structures to the key parameters of the radiated electric field wave shape are investigated and analyzed. Then based on the influence curves the target parameter requirements of the pulse generator are proposed. Finally the appropriate parameters of the biconical structure and the excitation sources are chosen, and the computational result of the electric field in free space is presented. The results are of great value for the design of the hybrid HEMP simulator. (authors)

  2. Still special? Harvesting procedures for industrial hemp

    Hans-Jörg Gusovius

    2016-01-01

    Full Text Available A multitude of different harvesting procedures is available after the re-approval of hemp growing in Germany about 20 years ago. Established, but as well recent machine developments enable the supply of raw materials for further processing or as food and feed materials. The necessary specialization level results in high but, compared to other established crops, not exceeding procedural costs. In this study, harvesting procedures and technologies are analyzed that are currently used under Northern European cultivation conditions. However, technological enhancements are still needed in order to improve the competitiveness of fibre hemp in the crop rotation as well as of hemp-based semi-finished and finished products.

  3. Pretreatment of hemp fibers for utilization in strong biocomposite materials

    Liu, Ming

    Hemp is the common name for Cannabis sativa cultivated for industrial use. Compared to synthetic fibers (e.g. glass fiber), hemp fibers have many advantages such as low cost, low density (1.5 g/cm3) and high specific strength and stiffness. As a result of increasing environmental awareness......, interest in hemp fiber reinforced composites is increasing because of a high potential of manufacturing hemp fiber reinforced polymer composites with acceptable mechanical properties at low cost. In order to expedite the application of natural fibers in polymer composites, hemp fibers need to be treated...... before being incorporated in matrix polymers to optimize the properties of fibers and fiber reinforced composites. The overall objective of this study was therefore to focus on understanding the correlation between chemical composition and morphology of hemp fibers and mechanical properties of hemp...

  4. The Genetic Structure of Marijuana and Hemp.

    Jason Sawler

    Full Text Available Despite its cultivation as a source of food, fibre and medicine, and its global status as the most used illicit drug, the genus Cannabis has an inconclusive taxonomic organization and evolutionary history. Drug types of Cannabis (marijuana, which contain high amounts of the psychoactive cannabinoid Δ9-tetrahydrocannabinol (THC, are used for medical purposes and as a recreational drug. Hemp types are grown for the production of seed and fibre, and contain low amounts of THC. Two species or gene pools (C. sativa and C. indica are widely used in describing the pedigree or appearance of cultivated Cannabis plants. Using 14,031 single-nucleotide polymorphisms (SNPs genotyped in 81 marijuana and 43 hemp samples, we show that marijuana and hemp are significantly differentiated at a genome-wide level, demonstrating that the distinction between these populations is not limited to genes underlying THC production. We find a moderate correlation between the genetic structure of marijuana strains and their reported C. sativa and C. indica ancestry and show that marijuana strain names often do not reflect a meaningful genetic identity. We also provide evidence that hemp is genetically more similar to C. indica type marijuana than to C. sativa strains.

  5. Evaluation of Model Wheat/Hemp Composites

    Ivan Švec

    2014-02-01

    Full Text Available Model cereal blends were prepared from commercial wheat fine flour and 5 samples of hemp flour (HF, including fine (2 of conventional form, 1 of organic form and wholemeal type (2 of conventional form. Wheat flour was substituted in 4 levels (5, 10, 15, 20%. HF addition has increased protein content independently on tested hemp flour form or type. Partial model cereal blends could be distinguished according to protein quality (Zeleny test values, especially between fine and wholemeal HF type. Both flour types affected also amylolytic activity, for which a relationship between hemp addition and determined level of Falling Number was confirmed for all five model cereal blends. Solvent retention capacity profiles (SRC of partial models were influenced by both HF form and type, as well as by its addition level. Between both mentioned groups of quality features, significant correlation were proved - relationships among protein content/quality and lactic acid SRC were verifiable on p <0.01 (-0.58, 0.91, respectively. By performed ANOVA, a possibility to distinguish the HF form used in model cereal blend according to the lactic acid SRC and the water SRC was demonstrated. Comparing partial cereal models containing fine and wholemeal hemp type, HF addition level demonstrated its impact on the sodium carbonate SRC and the water acid SRC. Normal 0 21 false false false CS JA X-NONE

  6. The Genetic Structure of Marijuana and Hemp.

    Sawler, Jason; Stout, Jake M; Gardner, Kyle M; Hudson, Darryl; Vidmar, John; Butler, Laura; Page, Jonathan E; Myles, Sean

    2015-01-01

    Despite its cultivation as a source of food, fibre and medicine, and its global status as the most used illicit drug, the genus Cannabis has an inconclusive taxonomic organization and evolutionary history. Drug types of Cannabis (marijuana), which contain high amounts of the psychoactive cannabinoid Δ9-tetrahydrocannabinol (THC), are used for medical purposes and as a recreational drug. Hemp types are grown for the production of seed and fibre, and contain low amounts of THC. Two species or gene pools (C. sativa and C. indica) are widely used in describing the pedigree or appearance of cultivated Cannabis plants. Using 14,031 single-nucleotide polymorphisms (SNPs) genotyped in 81 marijuana and 43 hemp samples, we show that marijuana and hemp are significantly differentiated at a genome-wide level, demonstrating that the distinction between these populations is not limited to genes underlying THC production. We find a moderate correlation between the genetic structure of marijuana strains and their reported C. sativa and C. indica ancestry and show that marijuana strain names often do not reflect a meaningful genetic identity. We also provide evidence that hemp is genetically more similar to C. indica type marijuana than to C. sativa strains.

  7. The Genetic Structure of Marijuana and Hemp

    Sawler, Jason; Stout, Jake M.; Gardner, Kyle M.; Hudson, Darryl; Vidmar, John; Butler, Laura; Page, Jonathan E.; Myles, Sean

    2015-01-01

    Despite its cultivation as a source of food, fibre and medicine, and its global status as the most used illicit drug, the genus Cannabis has an inconclusive taxonomic organization and evolutionary history. Drug types of Cannabis (marijuana), which contain high amounts of the psychoactive cannabinoid Δ 9-tetrahydrocannabinol (THC), are used for medical purposes and as a recreational drug. Hemp types are grown for the production of seed and fibre, and contain low amounts of THC. Two species or gene pools (C. sativa and C. indica) are widely used in describing the pedigree or appearance of cultivated Cannabis plants. Using 14,031 single-nucleotide polymorphisms (SNPs) genotyped in 81 marijuana and 43 hemp samples, we show that marijuana and hemp are significantly differentiated at a genome-wide level, demonstrating that the distinction between these populations is not limited to genes underlying THC production. We find a moderate correlation between the genetic structure of marijuana strains and their reported C. sativa and C. indica ancestry and show that marijuana strain names often do not reflect a meaningful genetic identity. We also provide evidence that hemp is genetically more similar to C. indica type marijuana than to C. sativa strains. PMID:26308334

  8. ING status report July 1967

    Church, T G

    1967-07-01

    Evolution of ING from initial concept to advanced systems and the interplay between participating disciplines are illustrated in Fig. 1.2. Anticipated requirements for intense continuous fluxes of thermal neutrons set the initial goal and dictated the scale and other guidelines of the system including the desired completion date. While neutron applications were given prime consideration in conceptual planning, much wider fields of research, both pure and applied, would benefit from the facility now being studied. (author)

  9. ING status report July 1967

    Church, T.G.

    1967-01-01

    Evolution of ING from initial concept to advanced systems and the interplay between participating disciplines are illustrated in Fig. 1.2. Anticipated requirements for intense continuous fluxes of thermal neutrons set the initial goal and dictated the scale and other guidelines of the system including the desired completion date. While neutron applications were given prime consideration in conceptual planning, much wider fields of research, both pure and applied, would benefit from the facility now being studied. (author)

  10. Thermal Stress Effect on Density Changes of Hemp Hurds Composites

    Schwarzova, Ivana; Cigasova, Julia; Stevulova, Nadezda

    2016-12-01

    The aim of this article is to study the behavior of prepared biocomposites based on hemp hurds as a filling agent in composite system. In addition to the filler and water, an alternative binder, called MgO-cement was used. For this objective were prepared three types of samples; samples based on untreated hemp hurds as a referential material and samples based on chemically (with NaOH solution) and physically (by ultrasonic procedure) treated hemp hurds. The thermal stress effect on bulk density changes of hemp hurds composites was monitored. Gradual increase in temperature led to composites density reduction of 30-40 %. This process is connected with mass loss of the adsorbed moisture and physically bound water and also with degradation of organic compounds present in hemp hurds aggregates such as pectin, hemicelluloses and cellulose. Therefore the changes in the chemical composition of treated hemp hurds in comparison to original sample and its thermal decomposition were also studied.

  11. Development of hemp fibre - PP nonwoven composites - Conference Paper

    Hargitai, H

    2005-09-01

    Full Text Available Non-woven mats from hemp and polypropylene fibres in various proportions were produced and hot pressed to make composite material. The effect of hemp fibre content and anisotropy in non-woven mats resulting from the carding technology were examined...

  12. Crop physiology of fibre hemp (Cannabis sativa L.)

    Werf, van der H.

    1994-01-01

    Fibre hemp ( Cannabis sativa L.) may be an alternative to wood as a raw material for the production of paper pulp. The effects of enviromnental factors and cultural measures on the functioning, yield and quality of fibre hemp crops in the

  13. Hemp (Cannabis sativa L.) as an Environmentally Friendly Energyplant

    Poisa, Liena; Adamovics, Aleksandrs

    2010-01-01

    Hemp is suitable as a renewable energy resource. The aim of this study was to clarify local hemp's (Cannabis sativa L.) possibilities for energy use. Arsenic (As), cadmium (Cd), lead (Pb) and titanium (Ti) presence in hemp was determined using an inductively coupled plasma optical emission spectrometer Optima 2100 DV. If there were increased N fertilizer rates, there were increased hemp `Pūriņi' seeds and shive yield increases, but the oil content was reduced. Arsenic content was higher in the shives than in the stems with fibre. The ash content depends on non-organic substances which the plants absorb during the vegetation season. The lignin content depends on several factors: plant parts, and the N fertilizer rate. The unexplored factors have a great effect on the ash and lignin content. Hemp is suitable for cultivation and for bio-energy production in the agro-climatic conditions in Latvia.

  14. Effects of diets containing hemp seeds or hemp cake on fatty acid ...

    Esnart Mukumbo

    2018-02-23

    Feb 23, 2018 ... Council Directive, 2003) for fibre and oil production. ... fractions of hemp seed, soybean and sunflower seed have been determined at 19.7%, 7.8% and 0.5% .... (FAMES) were quantified by gas chromatography using a Varian ...

  15. Application of Hemp Hurds in the Preparation of Biocomposites

    Cigasova, J.; Stevulova, N.; Schwarzova, I.; Sicakova, A.; Junak, J.

    2015-11-01

    Hemp is a controversial bio-product with promising performance as a sustainable building material. The fact that hemp is an organic, natural product makes it highly relevant in the present reality of global pollution and struggle for coping with planetary warming. The construction sector is among the leading industries when it comes to energy consumption, release of CO2; it is responsible for great amounts of waste and pollution. The research and implementation of sustainable building materials is a crucial necessity in the modern times. Hemp (Cannabis sativa) is an agricultural crop that can be used as a building material in combination with conventional or alternative binders. Hemp composites have many advantages as a building material, but it is not load-bearing and must be used in combination with a loadbearing wooden frame. Despite this disadvantage, hemp composite materials offer several of appropriate properties, namely: low density, good thermal insulation, antiseptic and breathability. This paper studies the possibility of preparing the lightweight composites based on hemp hurds (treated and/or untreated) as a filler and alternative MgO-cement as a binder. Properties of hemp composites are characterized by mechanical and physical methods.

  16. Thermo-Insulation Properties Of Hemp-Based Products

    Lekavicius V.

    2015-02-01

    Full Text Available As known, many multi-purpose plants can be used in different industries. This research is focused on the possibilities to utilize hemp as feedstock for thermal insulation products. The most advantageous features of hemp insulation are associated with health and environmental safety. The thermal conductivity of commercially available hemp insulation products is comparable with that of other fibrous insulation materials; however, it is possible to develop new products that could be more efficient in terms of cost and due to other important features.

  17. Tensile properties of interwoven hemp/PET (Polyethylene Terephthalate) epoxy hybrid composites

    Ahmad, M. A. A.; Majid, M. S. A.; Ridzuan, M. J. M.; Firdaus, A. Z. A.; Amin, N. A. M.

    2017-10-01

    This paper describes the experimental investigation of the tensile properties of interwoven Hemp/PET hybrid composites. The effect of hybridization of hemp (warp) with PET fibres (weft) on tensile properties was of interest. Hemp and PET fibres were selected as the reinforcing material while epoxy resin was chosen as the matrix. The interwoven Hemp/PET fabric was used to produce hybrid composite using a vacuum infusion process. The tensile test was conducted using Universal Testing Machine in accordance to the ASTM D638. The tensile properties of the interwoven Hemp/PET hybrid composite were then compared with the neat woven hemp/epoxy composite. The results show that the strength of hemp/PET with the warp direction was increased by 8% compared to the neat woven hemp composite. This enhancement of tensile strength was due to the improved interlocking structure of interwoven Hemp/PET hybrid fabric.

  18. Revitalization of Industrial Hemp Cannabis sativa L. Var. sativa in Slovenia: a Study of Green Hemp Fibres

    Rijavec Tatjana

    2017-03-01

    Full Text Available The importance of industrial hemp as a source of highly valuable textile fi bres is briefly presented through its use for textiles and composites and its increasing cultivated areas in the 21st century. On the territory of present Slovenia, about 160 ha of agricultural area was cultivated with hemp before WWII, then it quickly began to decline and at the end of the 1970s, it was no longer cultivated. Revitalization of industrial hemp in Slovenia with fi eld experiments started already in the years 2000/2001 for producing seeds, whereas hemp fi bres were used only as an insulation for buildings. The textile technological properties of hemp fi bres from diff erent varieties grown in Slovenia have not been examined till now. They are important for using hemp fibres in highly valuable textile products. The properties of green hemp fi bres extracted mechanically from non-retted hemp stems of Cannabis sativa L. var. sativa (varieties: Novosadska, Juso-11, Bialobrzeskie, Unico- B and Beniko were determined. All the analysed varieties except Beniko had stem height over 200 cm. The highest yield of green fibres was 33.1% (Novosadska. The analysed green fibres’ content was 1.24–3.26% of ash, 7.77–8.50% of moisture regain, 10.69–13.92% of water-soluble substances and 8.45–10.83% of pectin. Through a biodegradation process of retting green hemp fibres in tap water at temperature 35°C, 9.01– 18.89% of dry mass was removed after ten days. Average linear density of green hemp fi bres was very high, around 200 tex. Tenacity of fi bres’ bundles was in the range of 167–272 MPa, but tenacity of elementary fibres was 548–672 MPa. From the curves of specific stress-strain, it is seen that green hemp fibres from all five varieties had similar superstructure. All analysed green hemp fibres had high linear density and low mechanical properties. For textile application, they should be further processed into finer fibres in order to increase their

  19. A Method for Producing Microcrystalline Cellulose from Hemp Fibers

    Valerii A. Barbash

    2018-03-01

    Conclusions. The proposed technology for the MCC production from hemp fibers reduces the cost of finished products by eliminating the bleaching stage of pulp as well as due to the use of domestic renewable plant raw materials, in particular hemp fibers compared with imported cotton or softwood pulp. The obtained MCC meets the requirements of technical conditions and can be used in the chemical industry as a sorbent or filler in the production of plastics and a water stabilizer for paints and emulsions.

  20. Industrial Hemp in North America: Production, Politics and Potential

    Jerome H. Cherney

    2016-11-01

    Full Text Available Most of the Western World banned the cultivation of Cannabis sativa in the early 20th century because biotypes high in ∆9-tetrahydrocannabinol (THC, the principal intoxicant cannabinoid are the source of marijuana. Nevertheless, since 1990, dozens of countries have authorized the licensed growth and processing of “industrial hemp” (cultivars with quite low levels of THC. Canada has concentrated on hemp oilseed production, and very recently, Europe changed its emphasis from fiber to oilseed. The USA, historically a major hemp producer, appears on the verge of reintroducing industrial hemp production. This presentation provides updates on various agricultural, scientific, social, and political considerations that impact the commercial hemp industry in the United States and Canada. The most promising scenario for the hemp industry in North America is a continuing focus on oilseed production, as well as cannabidiol (CBD, the principal non-intoxicant cannabinoid considered by many to have substantial medical potential, and currently in great demand as a pharmaceutical. Future success of the industrial hemp industry in North America is heavily dependent on the breeding of more productive oilseed cultivars, the continued development of consumer goods, reasonable but not overly restrictive regulations, and discouragement of overproduction associated with unrealistic enthusiasm. Changing attitudes have generated an unprecedented demand for the cannabis plant and its products, resulting in urgent needs for new legislative, regulatory, and business frameworks, as well as scientific, technological, and agricultural research.

  1. QUALITY OF HEMP SEED OIL DEPENDING ON ITS OBTAINING

    Ladislav Staruch

    2010-07-01

    Full Text Available Hemp (Cannabis sativa L. is probably one of the oldest field crops used in nutrition, but also for the production of fibres for clothes, ropes or canvas. Cannabis sativa is one of the most spread species of cannabis which belongs to family Cannabinaceae. The seeds are important part of cannabis sativa, which contains high part of lipids and proteins. It provides also valuable essential fatty acids, carbohydrates, fiber, vitamins and minerals. Due to low content of THC is possible to produce valuable oil from seeds, which is used in cosmetic and food industry. The aim of this work was to evaluate composition of hemp seeds from one harvest, observe and compare quality of parameters both cold pressed hemp seed oil and hemp seed oil by CO2 extraction. Both oils are comparable in composition of fatty acids which follow from results of analyses. Also contents of sterols and moisture are similar in both oils. The saponification value is similar in both oils, conformable to as a iodine value. Also were found dissimilarities in colours, phospholipides, unsaponifiable matter, acid value and peroxide value. The cold pressed hemp seed oil contained lower values of unsaponifiable matter, colours and higher concentration of phospholipides and lower acid value. It is caused by influence of CO2. The oxidation stability of cold pressed hemp seed oil was four times higher than oil by CO2 extraction. doi:10.5219/32 

  2. Thermal Stress Effect on Density Changes of Hemp Hurds Composites

    Schwarzova Ivana

    2016-12-01

    Full Text Available The aim of this article is to study the behavior of prepared biocomposites based on hemp hurds as a filling agent in composite system. In addition to the filler and water, an alternative binder, called MgO-cement was used. For this objective were prepared three types of samples; samples based on untreated hemp hurds as a referential material and samples based on chemically (with NaOH solution and physically (by ultrasonic procedure treated hemp hurds. The thermal stress effect on bulk density changes of hemp hurds composites was monitored. Gradual increase in temperature led to composites density reduction of 30-40 %. This process is connected with mass loss of the adsorbed moisture and physically bound water and also with degradation of organic compounds present in hemp hurds aggregates such as pectin, hemicelluloses and cellulose. Therefore the changes in the chemical composition of treated hemp hurds in comparison to original sample and its thermal decomposition were also studied.

  3. HEMP emergency planning and operating procedures for electric power systems. Power Systems Technology Program

    Reddoch, T.W.; Markel, L.C. [Electrotek Concepts, Inc., Knoxville, TN (United States)

    1991-12-31

    Investigations of the impact of high-altitude electromagnetic pulse (HEMP) on electric power systems and electrical equipment have revealed that HEMP creates both misoperation and failures. These events result from both the early time E{sub 1} (steep-front pulse) component and the late time E{sub 3} (geomagnetic perturbations) component of HEMP. In this report a HEMP event is viewed in terms of its marginal impact over classical power system disturbances by considering the unique properties and consequences of HEMP. This report focuses on system-wide electrical component failures and their potential consequences from HEMP. In particular, the effectiveness of planning and operating procedures for electric systems is evaluated while under the influence of HEMP. This assessment relies on published data and characterizes utilities using the North American Electric Reliability Council`s regions and guidelines to model electric power system planning and operations. Key issues addressed by the report include how electric power systems are affected by HEMP and what actions electric utilities can initiate to reduce the consequences of HEMP. The report also reviews the salient features of earlier HEMP studies and projects, examines technology trends in the electric power industry which are affected by HEMP, characterizes the vulnerability of power systems to HEMP, and explores the capability of electric systems to recover from a HEMP event.

  4. The influence of partial replacement of hemp shives by expanded perlite on physical properties of hemp-lime composite

    Brzyski, Przemysław; Widomski, Marcin

    2017-07-01

    The use of waste plants in building materials production is consistent with the principles of sustainable development, including waste management, CO2 balance, biodegradability of the material e.g. after building demolition. The porous structure of plant materials determines their usability as the insulation materials. An example of plant applicable in the construction industry is the industrial hemp. The shives are produced from the wooden core of the hemp stem as lightweight insulating filler in the composite based on lime binder. The discussed hemp-lime composite, due to the presence of lightweight, porous organic aggregates exhibits satisfactory thermal insulation properties and is used as filling and insulation of walls (as well as roofs and floors) in buildings of the wooden frame construction. The irregular shape of shives and their low density causes nonhomogenous compaction of composite and the formation of voids between the randomly arranged shives. In this paper the series of hemp-lime composites were tested. Apart from hemp shives, an additional aggregate - expanded perlite was used as a fine, lightweight, thermal insulating filler. Application of the additional aggregate was aimed to fill the voids between hemp shives and to investigate its influence on the physical properties of composite: apparent density, total porosity, water absorption and thermal conductivity.

  5. ING1 induces apoptosis through direct effects at the mitochondria

    Bose, P; Thakur, S; Thalappilly, S

    2013-01-01

    The ING family of tumor suppressors acts as readers and writers of the histone epigenetic code, affecting DNA repair, chromatin remodeling, cellular senescence, cell cycle regulation and apoptosis. The best characterized member of the ING family, ING1,interacts with the proliferating cell nuclear....... Bioinformatic analysis of the yeast interactome indicates that yeast ING proteins interact with 64 mitochondrial proteins. Also, sequence analysis of ING1 reveals the presence of a BH3-like domain. These data suggest a model in which stress-induced cytoplasmic relocalization of ING1 by14-3-3 induces ING1-BAX...

  6. Microstructure and mechanical performance of modified mortar using hemp fibres and carbon nanotubes

    Hamzaoui, Rabah; Guessasma, Sofiane; Mecheri, Boubakeur; Eshtiaghi, Amir M.; Bennabi, Abdelkrim

    2014-01-01

    Mechanical performance of modified mortar using hemp fibres is studied following various processing conditions. Hemp fibres combined with carbon nanotubes (CNT) are introduced in mortar and their effect is studied as function of curing time

  7. Experimental and numerical investigations of radiation characteristics of Russian portable/compact pulsed neutron generators: ING-031, ING-07, ING-06 and ING-10-20-120

    Chernikova, D.; Romodanov, V.L.; Belevitin, A.G.; Afanas'ev, V.V.; Sakharov, V.K.; Bogolubov, E.P.; Ryzhkov, V.I.; Khasaev, T.O.; Sladkov, A.A.; Bitulev, A.A.

    2014-01-01

    The present paper discusses results of full-scale experimental and numerical investigations of influence of construction materials of portable pulsed neutron generators ING-031, ING-07, ING-06 and ING-10-20-120 (VNIIA, Russia) to their radiation characteristics formed during and after an operation (shutdown period). In particular, it is shown that an original monoenergetic isotropic angular distribution of neutrons emitted by TiT target changes into the significantly anisotropic angular distribution with a broad energy spectrum stretching to the thermal region. Along with the low-energetic neutron part, a significant amount of photons appears during the operation of generators. In the pulse mode of operation of neutron generator, a presence of the construction materials leads to the “tailing” of the original neutron pulse and the appearance of an accompanying photon pulse at ∼3ns after the instant neutron pulse. In addition to that, reactions of neutron capture and inelastic scattering lead to the creation of radioactive nuclides, such as 58 Co, 62 Cu, 64 Cu and 18 F, which form the so-called activation radiation. Thus, the selection of a portable neutron generator for a particular type of application has to be done considering radiation characteristics of the generator itself. This paper will be of interest to users of neutron generators, providing them with valuable information about limitations of a specific generator and with recommendations for improving the design and performance of the generator as a whole

  8. Oxidation of lignin in hemp fibres by laccase: effects on mechanical properties of hemp fibres and unidirectional fibre/epoxy composites

    Liu, Ming; Baum, Andreas; Odermatt, Jürgen

    2017-01-01

    Laccase activity catalyzes oxidation and polymerization of phenols. The effect of laccase treatment on the mechanical properties of hemp fibres and hemp fibre/epoxy composites was examined. Laccase treatment on top of 0.5% EDTA + 0.2% endo-polygalacturonase (EPG) treatments increased the mechanical...... properties of hemp fibres and fibre/epoxy composites. Comparing all fibre treatments, composites with 0.5% EDTA + 0.2% EPG + 0.5% laccase treated fibres had highest stiffness of 42 GPa and highest ultimate tensile strength (UTS) of 326 MPa at a fibre volume content of 50%. The thermal resistance of hemp...... hemp fibres and their composites were due to laccase catalyzed polymerization of lignin moieties in hemp fibres....

  9. New Green Polymeric Composites Based on Hemp and Natural Rubber Processed by Electron Beam Irradiation

    Maria-Daniela Stelescu

    2014-01-01

    Full Text Available A new polymeric composite based on natural rubber reinforced with hemp has been processed by electron beam irradiation and characterized by several methods. The mechanical characteristics: gel fraction, crosslink density, water uptake, swelling parameters, and FTIR of natural rubber/hemp fiber composites have been investigated as a function of the hemp content and absorbed dose. Physical and mechanical properties present a significant improvement as a result of adding hemp fibres in blends. Our experiments showed that the hemp fibers have a reinforcing effect on natural rubber similar to mineral fillers (chalk, carbon black, silica. The crosslinking rates of samples, measured using the Flory-Rehner equation, increase as a result of the amount of hemp in blends and the electron beam irradiation dose increasing. The swelling parameters of samples significantly depend on the amount of hemp in blends, because the latter have hydrophilic characteristics.

  10. 75 FR 16456 - Inglis Hydropower, LLC; Notice Soliciting Scoping Comments

    2010-04-01

    ... Hydropower, LLC; Notice Soliciting Scoping Comments March 26, 2010. Take notice that the following...: Inglis Hydropower, LLC. e. Name of Project: Inglis Hydropower Project. f. Location: The proposed project... Commission staff intends to prepare a single Environmental Assessment (EA) for the Inglis Hydropower Project...

  11. Characterization of Sunn hemp begomovirus and its geographical ...

    Thus, it is concluded that the recombinant CP genes related to begomoviruses are evolved from the Indian isolates, causing broad host specificity and molecular diversity among the related begomoviruses across the geographical limits of Southeast Asia. Keywords: Begomovirus, sunn hemp, coat protein, recombination, ...

  12. Sustainable hemp-based composites for the building industry application

    Schwarzova, Ivana; Stevulova, Nadezda; Junak, Jozef; Hospodarova, Viola

    2017-07-01

    Sustainability goals are essential driving principles for the development of innovative materials in the building industry. Natural plant (e.g. hemp) fibers represent an attractive alternative as reinforcing material due to its good properties and sustainability prerequisites. In this study, hemp-based composite materials, designed for building application as non-load bearing material, providing both thermal insulation and physico-mechanical properties, are presented. Composite materials were produced by bonding hemp hurds with a novel inorganic binder (MgO-based cement) and then were characterized in terms of physical properties (bulk density, water absorption), thermal properties (thermal conductivity) and mechanical properties (compressive and tensile strength). The composites exhibited promising physical, thermal and mechanical characteristics, generally comparable to commercially available products. In addition, the hemp-based composites have the advantage of a significantly low environmental impact (thanks to the nature of both the dispersed and the binding phase) and no negative effects on human health. All things considered, the composite materials seem like very promising materials for the building industry application.

  13. Sequenced anaerobic - aerobic treatment of hemp pulping wastewaters

    Kortekaas, S.

    1998-01-01

    Biological treatment is an indispensable instrument for water management of non-wood pulp mills, either as internal measure to enable progressive closure of water cycles, or as end of pipe treatment. In this thesis, the sequenced anaerobic-aerobic treatment of hemp ( Cannabis

  14. Yield Potential of Hemp (Cannabis sativa L.) Cultivars in Denmark

    Deleuran, Lise Christina; Flengmark, Poul Kristiansen

    2005-01-01

    In order to determine the yield potential of fibre hemp in Denmark, defined as seed yield, biomass, stem and fibre production, five cultivars were evaluated in field trials at two sites during 1998-2000. The total dry matter yield, stem yield, fibre yield, fibre percent, plant height, and seed...

  15. Technological and nutritional aspect of different hemp types addition: Comparison of flour and wholemeal effect

    Marie Hrušková

    2015-01-01

    Full Text Available Addition of non-traditional raw-materials and flours into wheat flour follows contemporary trend of manufacturing nutritionally healthier fermented bakery products. Aim of the study follows this tendency, evaluating nutritional improvement of composite flour and baking potential of prepared wheat-hemp flour composites. Hemp products addition significantly increased both protein and dietary fibre contents. Between five types of hemp flour, differences were observed according to incorporated amount (wheat flour substitution from 5% to 20%. In composites containing 20% of hemp flour and dehulled hemp wholemeal, protein content increased to 14.9% and to 15.7%, respectively (compared to 12.5% proteins in control wheat flour. Dietary fibre content change was governed unequivocally by addition level for both hemp flour and hemp wholemeal. Hemp wholemeal affected the solvent retention capacity (SRC profile of the wheat flour used in a broader extent than hemp flour done, interacting moreover with addition level applied. Significant diminishing was measured for the sucrose and the lactic acid SRC, which describe physicochemical stage of starch and proteins in prepared composites. Addition of 5% and 20% of dehulled hemp wholemeal decreased the formed SRC from 112.0% to 102.3% and to 64.1%, and the latter SRC from 182.6% to 108.0 and to 78.3%, respectively. Smaller bread volume and worse shape were evaluated as the amount of hemp flour gradually increased; wholemeal form had more or less a positive effect. Correspondingly to that, crumb firmness measured by penetration test was found approximately half for hemp flour composite bread than for the hemp wholemeal ones.

  16. Fermented Dough Characteristics of Wheat-barley-hemp Composites. Comparison of Two Dosages of Barley and Hemp Wholemeal/Flour

    Marie Hrušková

    2016-01-01

    Full Text Available Wheat flour substitution by barley one led to shortening of fermentation and leavening times (about 14–57% and 35–83%, respectively as well as to lessening of dough volumes (about 25–75%, based on lowered protein quality (Zeleny value. Addition of barley flour affected specific bread volume; diminishing for wheat-barley blends 70:30 and 50:50 reached 30% and 43%, respectively. Volume of bread prepared from wheat-barley blend 70:30 enhanced by dehulled hemp wholemeal was the highest within the tested tri-composites set, achieving 130% of wheat-barley control; other hemp products caused the parameter decrease (from 8 to 33%. Within a group of bakery products containing 50% of barley flour, hulled hemp wholemeal partially supressed negative effect of barley flour – specific bread volumes increased about ca 15%. Commercial fine hemp flour samples demonstrated a reversal influence – its addition resulted into lower buns size than wheat-barley control (about 3–34%. Between wheat flour and both groups of flour tri-composites, PCA confirmed differences in dough and bread technological quality. Specific bread volume could be predicted according to maturograph dough elasticity, dough or bread OTG volumes.

  17. Microstructure and mechanical performance of modified mortar using hemp fibres and carbon nanotubes

    Hamzaoui, Rabah

    2014-04-01

    Mechanical performance of modified mortar using hemp fibres is studied following various processing conditions. Hemp fibres combined with carbon nanotubes (CNT) are introduced in mortar and their effect is studied as function of curing time. The cement phase is replaced by different percentages of dry or wet hemp fibres ranging from 1.1. wt% up to 3.1. wt% whereas carbon nanotubes are dispersed in the aqueous solution. Our experimental results show that compressive and flexural strengths of wet fibres modified mortar are higher than those for dry hemp-mortar material. The achieved optimal percentage of wet hemp fibres is 2.1. wt% allowing a flexural strength higher than that of reference mortar. The addition of an optimal CNT concentration (0.01. wt%) combined with wet hemp has a reinforcing effect which turns to be related to an improvement of compressive and flexural strengths by 10% and 24%, respectively, in comparison with reference condition. © 2013 Elsevier Ltd.

  18. Chemical and physical modification of hemp fibres by steam explosion technology

    Sutka, Anna; Kukle, Silvija; Gravitis, Janis; Berzins, Agris

    2013-01-01

    In current research attempt has been made to analyse hemp fibres treated with steam explosion (SE) technology. Disintegration of hemp fibres separated from non-retted, dew-retted and dried stems of hemp ('Purini')[1] by alkali treatment and steam explosion (SE) were investigated. An average intensive SE in combination with the hydro-thermal and alkali after-treatment allows decreasing the diameter of hemp fibres and reduce the concentration of non-celluloses components, among them hemicelluloses, lignin, pectin, waxes and water [1;2

  19. Mechanical-physical experimental tests on lime mortars and bricks reinforced with hemp

    Formisano, Antonio; Dessı, Enzo; Landolfo, Raffaele

    2017-11-01

    Hemp is an agricultural product used for various applications. In the Civil Engineering field, only a limited use of this natural material, called the "green pig" since exploitation of all its constituent parts is allowed, has been done. For this reason, in the paper an experimental activity on lime mortars and bricks reinforced with hemp components has been performed. Compression and bending tests have been carried out on specimens manufactured with hemp shives and fibres, respectively. The achieved results have shown that hemp products change the failure modes from brittle to ductile, leaving basically unaltered the strength capacity of reinforced specimens with respect to unreinforced ones.

  20. Industrial hemp as a potential bioenergy crop in comparison with kenaf, switchgrass and biomass sorghum.

    Das, Lalitendu; Liu, Enshi; Saeed, Areej; Williams, David W; Hu, Hongqiang; Li, Chenlin; Ray, Allison E; Shi, Jian

    2017-11-01

    This study takes combined field trial, lab experiment, and economic analysis approaches to evaluate the potential of industrial hemp in comparison with kenaf, switchgrass and biomass sorghum. Agronomy data suggest that the per hectare yield (5437kg) of industrial hemp stem alone was at a similar level with switchgrass and sorghum; while the hemp plants require reduced inputs. Field trial also showed that ∼1230kg/ha hemp grain can be harvested in addition to stems. Results show a predicted ethanol yield of ∼82gallons/dry ton hemp stems, which is comparable to the other three tested feedstocks. A comparative cost analysis indicates that industrial hemp could generate higher per hectare gross profit than the other crops if both hemp grains and biofuels from hemp stem were counted. These combined evaluation results demonstrate that industrial hemp has great potential to become a promising regional commodity crop for producing both biofuels and value-added products. Copyright © 2017 Elsevier Ltd. All rights reserved.

  1. Properties of hemp fibre polymer composites - An optimisation of fibre properties using novel defibration methods and fibre characterisation

    Thygesen, Anders

    2006-01-01

    Characterization of hemp fibres was carried out with fibres obtained with low handling damage and defibration damage to get an indication of how strong cellulose based fibres that can be produced from hemp. Comparison was made with hemp yarn producedunder traditional conditions where damage...... obtained by steam explosion of hemp fibres prior defibrated with pectin degrading enzymes. The S2 layer in the fibre wall of the hemp fibres consisted of1-4 cellulose rich and lignin poor concentric layers constructed of ca. 100 nm thick lamellae. The microfibril angle showed values in the range 0......-10° for the main part of the S2-layer and 70-90° for the S1-layer. The microfibrils that are mainly parallelwith the fibre axis explain the high fibre stiffness, which in defibrated hemp fibres reached 94 GPa. The defibrated hemp fibres had higher fibre stiffness (88-94 GPa) than hemp yarn (60 GPa), which...

  2. Engineering Properties of Treated Natural Hemp Fiber-Reinforced Concrete

    Xiangming Zhou

    2017-06-01

    Full Text Available In recent years, the construction industry has seen a significant rise in the use of natural fibers, for producing building materials. Research has shown that treated hemp fiber-reinforced concrete (THFRC can provide a low-cost building material for residential and low-rise buildings, while achieving sustainable construction and meeting future environmental targets. This study involved enhancing the mechanical properties of hemp fiber-reinforced concrete through the Ca(OH2 solution pretreatment of fibers. Both untreated (UHFRC and treated (THFRC hemp fiber-reinforced concrete were tested containing 15-mm length fiber, at a volume fraction of 1%. From the mechanical strength tests, it was observed that the 28-day tensile and compressive strength of THFRC was 16.9 and 10% higher, respectively, than UHFRC. Based on the critical stress intensity factor (KICs and critical strain energy release rate (GICs, the fracture toughness of THFRC at 28 days was also found to be 7–13% higher than UHFRC. Additionally, based on the determined brittleness number (Q and modulus of elasticity, the THFRC was found to be 11% less brittle and 10.8% more ductile. Furthermore, qualitative analysis supported many of the mechanical strength findings through favorable surface roughness observed on treated fibers and resistance to fiber pull-out.

  3. PhysLink Physics and Astronomy online education and reference

    The PhysLink.com is a comprehensive physics and astronomy online education, research and reference web site. In addition to providing high-quality content, PhysLink.com is a meeting place for professionals, students and other curious minds.

  4. Mechanical performance of hemp fiber polypropylene composites at different operating temperatures

    Mehdi Tajvidi; Nazanin Motie; Ghonche Rassam; Robert H. Falk; Colin Felton

    2010-01-01

    In order to quantify the effect of temperature on the mechanical properties of hemp fiber polypropylene composites, formulations containing 25% and 40% (by weight) hemp fiber were produced and tested at three representative temperatures of 256, 296, and 336 K. Flexural, tensile, and impact tests, as well as dynamic mechanical analysis, were performed and the reduction...

  5. Anti-inflammatory effect of methanol extracts of hemp leaf in IL-1β ...

    Purpose: To examine the effectiveness of some hemp (Canabis sativa) leaf extracts as an antiinflammatory agent on synovitis in vitro. Methods: Synovial fibroblast cell line SW982 was induced with 5 ng/mL of interleukin 1-beta (IL-1β) to trigger cellular inflammation. The cells were then treated with prepared extracts of hemp ...

  6. Mechanical and thermal properties of polymer composite based on natural fibers: Moroccan hemp fibers/polypropylene

    Elkhaoulani, A.; Arrakhiz, F.Z.; Benmoussa, K.; Bouhfid, R.; Qaiss, A.

    2013-01-01

    Highlights: ► Moroccan hemp fibers are used as reinforcement in thermoplastic matrix. ► Moroccan hemp fiber was alkali treated to remove waxes and noncellulosic component. ► Fiber–matrix adhesion was assured by the use of a SEBS-g-MA as a compatibilizer. - Abstract: Moroccan hemp is a cellulosic fiber obtained from the north of Morocco. Their use as reinforcement in thermoplastic matrix composite requires a knowledge of their morphology and structure. In this paper the Moroccan hemp fiber was alkali treated to remove waxes and noncellulosic surface components. Fiber/matrix adhesion was assured by the use of a styrene-(ethylene-butene)-styrene three-block copolymer grafted with maleic anhydride (SEBS-g-MA) as a compatibilizer. Scanning electron microscopy (SEM), Fourier transforms infrared spectroscopy (FT-IR), Thermogravimetric analysis (TGA), tensile and torsional tests were carried out for hemp fibers polypropylene composite and the compatibilized composite at different fiber content. Thus, the binary composite PP/hemp fibers (Alk) and ternary system with maleic anhydride indicate clearly an improved adhesion of the fiber to the matrix as results of the good interaction at the interface. A gain of 50% on the Young’s modulus of PP/hemp 25 wt.% without coupling agent and 74% on the PP/hemp 20 wt.% composite with the coupling agent were found. Tensile strength curve shows a remarkable stabilization when the coupling agent was used

  7. Influence of accompanying substances of hemp fibres on their electric resistance

    Pejić Biljana

    2006-01-01

    Full Text Available Hemp fibres belong to the group of natural, cellulose bast fibres. These fibres have exceptional properties such as: antimicrobial effect, absence of allergy effect, extraordinary sorption properties, good electro-physical properties (small static electricity in regard to other cellulose fibres as well as high values of breaking strength (the natural fibre with the highest strength. However, hemp fibres have some defects: heterogeneous chemical composition, large quantity of accompanying substances (lignin pectins, waxes and unsatisfactory fineness and eveness. It is possible to a great extent to eliminate or reduce, the defects of hemp fibres by of appropriate modification treatments. In order to determine the appropriate modification treatment of hemp fibres, the dependences between the chemical composition, fineness and electric resistance of hemp fibres were presented in this paper. In the experimental part of the paper, by the application of a procedure for the determination of the chemical composition, the accompanying supstances of hemp fibres were gradually removed. After each phase some fibrous substrates were separated. After that the fineness and electric resistance were determined. This experiment was conducted in order to define the influence of each component of hemp fibres on the fineness and electric resistance. In this paper, hemp fibres were modified by an aqueous solution of sodium hydroxide, under different conditions of modification. The influence of modification conditions on the fineness and electric resistance were studied.

  8. Crumb evaluation of bread with hemp products addition by means of image analysis

    Ivan Švec

    2013-01-01

    Full Text Available Hemp flour composition (20–30% proteins, 7–13% fat and more than 40% saccharides is a precondition for its usage into non-traditional cereal products. Corresponding to the fact, that hemp proteins are represented mostly by edestin, a low-molecular globulin, technological behaviour of composites containing 5–20% of hemp flour is basically different. The effect was clearly reflected in specific bread volume decrease, comparing standard wheat bread vs. wheat-hemp one. Sensorial profile of such fortified product depends on hemp sample origin, the better one was observed for dehulled wholemeal hemp flour addition. Image analysis of black-white bread cut prints revealed increasing pore densities (up to about 74% at reversely diminishing mean cell areas (up to about 31% for bread altered by hulled wholemeal hemp flour. Comparing to wheat standard W2, crumb appearance of bread enhanced by 5% and 20% of dehulled hemp wholemeal was described by conversely lower cell density (11 and 9 vs. 13 pores per cm2 with verifiably larger cells (3.13 a 4.25 mm2 against 2.35 mm2. Specific bread volume and crumb penetration were significantly correlated to both cell density (r −0.69 and −0.65, respectively; P = 99.9 % and to cell mean area (0.79 and 0.69, respectively; P = 99.9 %.

  9. Alkaline hemp woody core pulping : impregnation characteristics, kinetic modelling and papermaking qualities

    Groot, de B.

    1998-01-01

    The aim of this thesis is to elucidate alkaline processing of hemp woody core, supporting the development and optimization of an efficient and non-polluting pulping process. This study has been a constituent of an integral programme to study fibre hemp.

    It is known that

  10. Intercropping of taro and sunn hemp with cutting periods during the cycle

    João Nacir Colombo

    Full Text Available ABSTRACT Intercropping using legumes is one of the ways to protect the main crop, and in long term improve the physical and chemical properties of the soil. The aim of this work was to evaluate the intercropping of Colocasia esculenta (L. Schott (taro and the tropical legume Crotalaria juncea L. (sunn hemp, cutting sunn hemp at ten periods during the cycle. The experiment was carried out under field conditions between 09/23/2010 and 06/04/2011. It consisted of 11 treatments related to the 10 cutting times of sunn hemp (55, 70, 85,100, 115, 130, 145, 160, 190, and 220 days after sowing - DAS plus a control of taro with no sunn hemp. During the cycle, taro was evaluated for plant height and incidence of leaf burn. At the time of cutting the sunn hemp, the plant height, fresh and dry matter masses, and nutrient content of the biomass were calculated. During taro harvest, we evaluated the productivity of the mother rhizomes and classified the cormels. Taro plants shaded by sunn hemp showed a lower incidence of leaf burn. The sunn hemp cut from 145 DAS onwards affected the yield of comercial rhizomes and total and agroeconomic indexes. Sunn hemp cut up to 130 DAS provided better performance of taro, without compromising productivity and economic indicators, with the highest amounts of N and K observed in the biomass cut at 115 DAS.

  11. The potential of hemp (Cannabis sativa L.) for sustainable fibre production: a crop physiological appraisal.

    Werf, van der H.M.G.; Mathijssen, E.W.J.M.; Haverkort, A.J.

    1996-01-01

    Hemp (Cannabis sativa L.) fibre can be used as a raw material for paper and textile production. A comprehensive research programme in the Netherlands has concluded that fibre hemp is a potentially profitable crop, having the right profile to fit into sustainable farming systems. This paper presents

  12. The effects of growth conditions and of processing into yarn on dislocations in hemp fibres

    Thygesen, Lisbeth Garbrecht

    2011-01-01

    at harvest in hemp fibres from plants grown in a green house under three different regimes (wind free, windy and dry) with the percentage found in commercial hemp yarn. As expected a higher percentage of the cell wall consisted of dislocations in the processed fibres, but the increase was only significant...

  13. Viking and early Middle Ages northern Scandinavian textiles proven to be made with hemp.

    Skoglund, G; Nockert, M; Holst, B

    2013-10-18

    Nowadays most plant textiles used for clothing and household are made of cotton and viscose. Before the 19th century however, plant textiles were mainly made from locally available raw materials, in Scandinavia these were: nettle, hemp and flax. It is generally believed that in Viking and early Middle Ages Scandinavia hemp was used only for coarse textiles (i.e. rope and sailcloth). Here we present an investigation of 10 Scandinavian plant fibre textiles from the Viking and Early Middle Ages, believed to be locally produced. Up till now they were all believed to be made of flax. We show that 4 textiles, including two pieces of the famous Överhogdal Viking wall-hanging are in fact made with hemp (in three cases hemp and flax are mixed). This indicates that hemp was important, not only for coarse but also for fine textile production in Viking and Early Middle Ages in Scandinavia.

  14. Investigation of mechanical properties of kenaf, hemp and E-glass fiber reinforced composites

    Dinesh, Veena; Shivanand, H. K.; Vidyasagar, H. N.; Chari, V. Srinivasa

    2018-04-01

    Recently the use of fiber reinforced polymer composite in the automobile, aerospace overwhelming designing sectors has increased tremendously due to the ecological issues and health hazard possessed by the synthetic fiber during disposal and manufacturing. The paper presents tensile strength, flexural strength and hardness of kenaf-E glass-kenaf, hemp-E glass-hemp and kenaf-E glass-hemp fiber reinforced polyester composites. The composite plates are shaped according to the standard geometry and uni-axially loaded in order to investigate the tensile responses of each combination. In addition to the physical and mechanical properties, processing methods and application of kenaf and hemp fiber composites is also discussed.

  15. Viking and Early Middle Ages Northern Scandinavian Textiles Proven to be made with Hemp

    Skoglund, G.; Nockert, M.; Holst, B.

    2013-10-01

    Nowadays most plant textiles used for clothing and household are made of cotton and viscose. Before the 19th century however, plant textiles were mainly made from locally available raw materials, in Scandinavia these were: nettle, hemp and flax. It is generally believed that in Viking and early Middle Ages Scandinavia hemp was used only for coarse textiles (i.e. rope and sailcloth). Here we present an investigation of 10 Scandinavian plant fibre textiles from the Viking and Early Middle Ages, believed to be locally produced. Up till now they were all believed to be made of flax. We show that 4 textiles, including two pieces of the famous Överhogdal Viking wall-hanging are in fact made with hemp (in three cases hemp and flax are mixed). This indicates that hemp was important, not only for coarse but also for fine textile production in Viking and Early Middle Ages in Scandinavia.

  16. Kenaf-and hemp-reinforced natural fibre composites

    Sharifah Hanisah Aziz

    2003-01-01

    The main aim of this research is to combine hemp and kenaf fibres with thermosetting resin matrices to produce sustainable composites and to investigate their mechanical properties. The matirces used in this work are based on either unsaturated polyester resins or cashew nut shell liquid (CNSL). The latter can be polymerised to form a phenolic-based natural resin. Four types of differently formulated polyester resins provided by Scott Bader Ltd, a UK-based resin company, were used to assess the effect of resin formulation on the properties of natural fibre composites. CSNL resins were used because CNSL is a sustainable resource and these resins are compatible with natural fibres. Kenaf, which is extensively grown in the Far East including Malaysia, has been identified as a bast (stem) fibre with significant market potential. Hemp is a United Kingdom-grown bast fibre with strong potential as a natural fibre reinforcement. In order to improve matrix to fibre adhesion, the fibres were treated with 6 % NaOH solution before being made into composites. The composites were fabricated using unidirectional and randomly oriented fibres to assess the effect of fibre alignment on the properties of the composites. The effect of moulding pressure on the fibre volume fraction and mechanical properties was also investigated. Kenaf and hemp fibre composites were successfully hot-pressed with polyester and CNSL resin matrices. Kenaf-CNSL (treated long fibre) composites possess the highest flexural modulus (MOE) at 16.7 GPa and flexural strength (MOR) at 165.4 MPa indicating good matrix to fibre adhesion. Generally, the treated fibre composites gave higher MOE and MOR values compared to the untreated composites. However, the work of fracture values were generally higher for the untreated fibre composites. among the four types of polyester used, the molecular structure of polyester B, modified to make it more polar in nature, resulted in the best performance with treated long kenaf

  17. Some neutron measurements with simulated ING targets

    Walker, J.

    1966-01-01

    Thermal neutron fluxes in the vicinity of a simulated Intense Neutron Generator target have been measured using Mn and Au foils, and a small BF 3 detector. The target was a Pb cylinder either 4-inch or 8-inch in diameter with a 1.2 g Ra-Be neutron source at its centre. This was centrally mounted in a 5' diam. x 5' high tank which was filled with either H 2 O or D 2 O moderator. Various gaps and absorbing annuli were placed around the target, and air-filled aluminum 'beam tubes' were mounted radially or tangentially from the target to simulate typical ING conditions. The measured thermal neutron fluxes were less than calculated at all radii. The single-age computation clearly gives large errors at large radii, but the multi-energy approach seems to give a useful indication of the thermal flux distribution in spite of the extreme simplicity of the model. The fall in measured fluxes at small radii in both D 2 O and H 2 O is most likely caused by absorption in the target material which is not allowed for in the computational model. (author)

  18. Some neutron measurements with simulated ING targets

    Walker, J

    1966-07-01

    Thermal neutron fluxes in the vicinity of a simulated Intense Neutron Generator target have been measured using Mn and Au foils, and a small BF{sub 3} detector. The target was a Pb cylinder either 4-inch or 8-inch in diameter with a 1.2 g Ra-Be neutron source at its centre. This was centrally mounted in a 5' diam. x 5' high tank which was filled with either H{sub 2}O or D{sub 2}O moderator. Various gaps and absorbing annuli were placed around the target, and air-filled aluminum 'beam tubes' were mounted radially or tangentially from the target to simulate typical ING conditions. The measured thermal neutron fluxes were less than calculated at all radii. The single-age computation clearly gives large errors at large radii, but the multi-energy approach seems to give a useful indication of the thermal flux distribution in spite of the extreme simplicity of the model. The fall in measured fluxes at small radii in both D{sub 2}O and H{sub 2}O is most likely caused by absorption in the target material which is not allowed for in the computational model. (author)

  19. Radiation induced pseudoisochromosomes in sunn hemp (Crotalaria juncea L.)

    Gupta, P.K.; Gupta, Rani

    1978-01-01

    In a population of sunn hemp (C. juncea), irradiated with gamma rays (30 Kr), a single plant was found to exhibit the presence of two ring univalents in 75.5% pollen mother cells. This was interpreted as a result of an interchange between the opposite arms of two homologous chromosomes giving rise to pseudoisochromosomes. In few other cells, four univalents and a single quadrivalent were also observed, thus indicating that two other interchanges involved very small segments, one of them between homologous chromosomes and the other between non-homologous chromosomes. (auth.)

  20. Accelerated aging as vigor test for sunn hemp seeds

    Silva, Clíssia Barboza da; Barbosa, Rafael Marani; Vieira, Roberval Daiton

    2016-01-01

    ABSTRACT: This study aimed to determine the most appropriate method to assess the sunn hemp ( Crotalaria juncea L.) seed vigor in the accelerated aging test. Five seed lots from harvest 2007/2008 were evaluated for germination, vigor and seedling emergence in the field. Accelerated aging test was performed at 41°C during 48, 72 and 96 hours, with and without sodium chloride saturated solution. Then, the promising procedure was also performed for 2008/2009 and 2009/2010 harvests. In the tradit...

  1. Accelerated aging as vigor test for sunn hemp seeds

    Silva,Clíssia Barboza da; Barbosa,Rafael Marani; Vieira,Roberval Daiton

    2017-01-01

    ABSTRACT: This study aimed to determine the most appropriate method to assess the sunn hemp ( Crotalaria juncea L.) seed vigor in the accelerated aging test. Five seed lots from harvest 2007/2008 were evaluated for germination, vigor and seedling emergence in the field. Accelerated aging test was performed at 41°C during 48, 72 and 96 hours, with and without sodium chloride saturated solution. Then, the promising procedure was also performed for 2008/2009 and 2009/2010 harvests. In the tradit...

  2. Radiation induced pseudoisochromosomes in sunn hemp (Crotalaria juncea L. )

    Gupta, P K; Gupta, R [Meerut Univ. (India). Inst. of Advanced Studies

    1978-01-01

    In a population of sunn hemp (C. juncea), irradiated with gamma rays (30 Kr), a single plant was found to exhibit the presence of two ring univalents in 75.5% pollen mother cells. This was interpreted as a result of an interchange between the opposite arms of two homologous chromosomes giving rise to pseudoisochromosomes. In few other cells, four univalents and a single quadrivalent were also observed, thus indicating that two other interchanges involved very small segments, one of them between homologous chromosomes and the other between non-homologous chromosomes.

  3. CHARACTERIZATION AND PERFORMANCE OF ELEMENTARY HEMP FIBRES: FACTORS INFLUENCING TENSILE STRENGTH

    Mizi Fan

    2010-09-01

    Full Text Available This paper presents the outcomes from an extensive investigation on the structure and geometry of single hemp fibres, as well as configurations and related tensile strength (TS of hemp fibres, with the aid of field emission scanning and optical microscopy. The results showed that 1 the TS increased with the decrease of the diameter of individual test pieces, due possibly to the stacks of multiple single fibres within the test pieces; 2 shear failure between single fibres in a test pieces played a significant role in the test results; 3 the TS was closely related to the number of both the inherent joints along the fibre length and single fibres contained in the test pieces; 4 the splits along the length and width of hemp fibres may complicate the test results, and 5 the optimized treatment prior to decortications may double the TS of hemp fibres compared to a normal retting processing. Reliable TS of single hemp fibres have been derived by a power regression, and the predicted TS were verified with an excellent agreement with experimentally tested results. The tensile strain-stress plot was found to be linear for all hemp test pieces, showing that the behaviour of single hemp fibres obeys Hooke’s law.

  4. Byssinosis and COPD rates among factory workers manufacturing hemp and jute

    Mukremin Er

    2016-02-01

    Full Text Available Objectives: Prior studies have been performed on cotton textile plants throughout the world. This study was planned to identify the rate of byssinosis and chronic obstructive pulmonary disease (COPD in hemp and jute workers and those who worked with both of them. Material and Methods: The study was realized in a factory which consecutively processed hemp and jute. The study enrollment included 266 people, 164 of whom were active workers and 102 were retired. A questionnaire, plain chest X-rays, physical examination and pulmonary function tests were performed. Dust levels were measured in various sections of the factory during 8 h work shifts. Endotoxin levels of various quality hemp fibers and dusts were measured. Results: The rate of byssinosis (28.2% was higher among the workers that who exposed to both jute and hemp dust. The frequency of chronic bronchitis in retired workers who previously smoked was higher (20% as compared to currently smoking workers (17%. High dust levels were measured in some parts of the factory (mean (M = 2.69 mg/m3. Working in dense dust areas, active smoking, being older than 40 years of age, being an ex-smoker, and working in the factory for a period exceeding 15 years were significantly associated with bronchitis and emphysema development. High endotoxin levels were determined for fine hemp dust (605 EU/mg, coarse hemp dust (336 EU/mg and poor quality hemp fibers (114 EU/mg, whereas in fresh hemp stalks the level of endotoxin was determined to be lower (0.27 EU/mg. Conclusions: Because of high exposures to jute and hemp dusts that are associated with high byssinosis rates, personal protection and environmental hygiene is crucial to prevention of byssinosis.

  5. Hemp: A more sustainable annual energy crop for climate and energy policy

    Finnan, John; Styles, David

    2013-01-01

    The objective of this study was to compare the fuel-chain greenhouse gas balance and farm economics of hemp grown for bioenergy with two perennial bioenergy crops, Miscanthus and willow, and two more traditional annual bioenergy crops, sugar beet and oil seed rape (OSR). The GHG burden of hemp cultivation is intermediate between perennial and traditional annual energy crops, but net fuel chain GHG abatement potential of 11 t/CO 2 eq./ha/year in the mid yield estimate is comparable to perennial crops, and 140% and 540% greater than for OSR and sugar beet fuel chains, respectively. Gross margins from hemp were considerably lower than for OSR and sugar beet, but exceeded those from Miscanthus when organic fertilizers were used and in the absence of establishment grants for the latter crop. Extrapolated up to the EU scale, replacing 25% of OSR and sugar beet production with hemp production could increase net GHG abatement by up to 21 Mt CO 2 eq./year. Hemp is a considerably more efficient bioenergy feedstock than the dominant annual energy crops. Integrated into food crop rotations, hemp need not compete with food supplies, and could provide an appealing option to develop more sustainable non-transport bioenergy supply chains. - Highlights: ► The GHG burden of hemp is intermediate between perennial and annual energy crops. ► Replacing 25% of OSR/beet with hemp could increase GHG abatement by 21 Mt/CO 2 eq./year. ► Hemp is a more efficient bioenergy feedstock than the dominant annual energy crops

  6. The Power Supply And Control Unit For The HEMP Thruster

    Brag, Rafael; Lenz, Werner; Huther, Andreas; Herty, Frank

    2011-10-01

    In the recent years, Astrium GmbH started to develop electronics to control and supply Electric Propulsion systems or corresponding components. One of the developments is a Power Supply and Control Unit (PSCU) for the Thales Electron Devices development "High Efficiency Multistage Plasma Thruster" (HEMP- T). The PSCU is developed, manufactured and tested on the Astrium southern Germany site in Friedrichshafen. The first application is the SGEO Satellite (HISPASAT- 1), where the In-Orbit Demonstration (IOD) of the HEMP Thruster system will prove the success of the product. Astrium conducted several coupling tests during the PSCU development especially concentrated on *Thruster electrical I/F parameters *Neutralizer electrical I/F parameters *Flow Control I/F parameters Results of these tests were used to refine the specification and adapt the PSCU drivers and control algorithms. Furthermore, the tests results gave Thales and Astrium the possibility for a deep understanding of the interaction between the physics and the electronics. The paper presents an overview of the PSCU topology, key features, technical and development logic details as well as a view into the control capabilities of the PSCU.

  7. Analysis and Toxicological Evaluation of Cannabinoids in Hemp Food Products - a review

    Lachenmeier, Dirk W.; Walch, Stephan G.

    2005-01-01

    After having abolished the prohibition of the cultivation of the species Cannabis sativa L. (so-called fibre hemp) with minor content of the psychoactive Δ9-tetrahydrocannabinol (THC), a wide variety of hemp food products is currently offered on the market. In this review, an introduction to the botany of the hemp plant and the current law situation in Germany and the European Union is presented. A survey of the analytic techniques used to verify compliance with the guidance values is given a...

  8. Integrated production of cellulosic bioethanol and succinic acid from industrial hemp in a biorefinery concept

    Kuglarz, Mariusz; Alvarado-Morales, Merlin; Karakashev, Dimitar Borisov

    2016-01-01

    The aim of this study was to develop integrated biofuel (cellulosic bioethanol) and biochemical (succinic acid) production from industrial hemp (Cannabis sativa L.) in a biorefinery concept. Two types of pretreatments were studied (dilute-acid and alkaline oxidative method). High cellulose recovery...... productivity. With respect to succinic acid production, the highest productivity was obtained after liquid fraction fermentation originated from steam treatment with 1.5% of acid. The mass balance calculations clearly showed that 149 kg of EtOH and 115 kg of succinic acid can be obtained per 1 ton of dry hemp....... Results obtained in this study clearly document the potential of industrial hemp for a biorefinery....

  9. How Inge Lehmann Discovered the Inner Core of the Earth

    Rousseau, Christiane

    2013-01-01

    The mathematics behind Inge Lehmann's discovery that the inner core of the Earth is solid is explained using data collected around the Earth on seismic waves and their travel time through the Earth.

  10. Hemp-Lime Performance in Danish Climatic Context. Thermal Conductivity as a Function of Moisture Content

    Antonov, Yovko Ivanov; Jensen, Rasmus Lund; Pomianowski, Michal Zbigniew

    2016-01-01

    concrete is a bio-based building material composed of the woody core of industrial hemp and lime based binder. It is a non-load-bearing material, which can be used as floor and around structural frames for walls and roof. The material is characterized by relatively low environmental impact, moderate...... thermal properties and, high air and moisture permeability. The properties vary with binder composition, mixing and casting techniques, as well as intended application. This research presents preliminary heat and moisture building simulations of single family house made out of hemp-lime composite....... To evaluate the performance of hemp-lime, it is compared to models with common external walls, upon defined parameters. The article also determines the variation of thermal conductivity for hemp-lime commercial plaster and wall mix, as a function of moisture content. The most promising binder composition...

  11. Thermochemical pretreatments for enhancing succinic acid production from industrial hemp (Cannabis sativa L.).

    Gunnarsson, Ingólfur B; Kuglarz, Mariusz; Karakashev, Dimitar; Angelidaki, Irini

    2015-04-01

    The aim of this study was to develop an efficient thermochemical method for treatment of industrial hemp biomass, in order to increase its bioconversion to succinic acid. Industrial hemp was subjected to various thermochemical pretreatments using 0-3% H2SO4, NaOH or H2O2 at 121-180°C prior to enzymatic hydrolysis. The influence of the different pretreatments on hydrolysis and succinic acid production by Actinobacillus succinogenes 130Z was investigated in batch mode, using anaerobic bottles and bioreactors. Enzymatic hydrolysis and fermentation of hemp material pretreated with 3% H2O2 resulted in the highest overall sugar yield (73.5%), maximum succinic acid titer (21.9 g L(-1)), as well as the highest succinic acid yield (83%). Results obtained clearly demonstrated the impact of different pretreatments on the bioconversion efficiency of industrial hemp into succinic acid. Copyright © 2015. Published by Elsevier Ltd.

  12. Evaluation of Hemp Root Bast as a New Material for Papermaking

    Cheng Miao

    2013-11-01

    Full Text Available Industrial hemp is a non-wood fiber material that can be used for papermaking due to a high yield of hemp raw material and high-quality physical properties of its pulp. Hemp is already used as a raw material for papermaking and other industrial productions. The chemical composition of hemp root bast (HRB was analyzed. HRBs were pulped using a soda-anthraquinone (Soda-AQ process and bleached with oxygen (O, chlorine dioxide (D, and alkali (E using the bleaching sequence OD0ED1. The results showed that HRB can be a suitable raw material for papermaking; the HRB pulp had a high viscosity (893 mL g-1 and brightness (85.52% ISO-brightness.

  13. Targeted pre-treatment of hemp bast fibres for optimal performance in biocomposite materials: A review

    Liu, Ming; Thygesen, Anders; Summerscales, John

    2017-01-01

    . In order to achieve strong NFCs, well separated and cellulose-rich fibres are required. Hemp is taking a center stage in this regard as a source of suitable natural plant cellulose fibres because natural hemp bast fibres are long and inherently possess high strength. Classical field and water retting...... methods have been used for centuries for removal of non-cellulosic components from fibrous plant stems including from hemp, but carries a risk of reducing the mechanical properties of the fibres via damaging the cellulose. For NFCs new targeted fibre pre-treatment methods are needed to selectively...... and effectively remove non-cellulosic components from the plant fibres to produce cellulose rich fibres without introducing any damage to the fibres. A key feature for successful use of natural fibres such as hemp fibres in composite materials is optimal interfacial contact between the fibres and the hydrophobic...

  14. Thermochemical pretreatments for enhancing succinic acid production from industrial hemp (Cannabis sativa L.)

    Gunnarsson, Ingólfur Bragi; Kuglarz, Mariusz; Karakashev, Dimitar Borisov

    2015-01-01

    The aim of this study was to develop an efficient thermochemical method for treatment of industrial hemp biomass, in order to increase its bioconversion to succinic acid. Industrial hemp was subjected to various thermochemical pretreatments using 0-3% H2SO4, NaOH or H2O2 at 121-180°C prior...... to enzymatic hydrolysis. The influence of the different pretreatments on hydrolysis and succinic acid production by Actinobacillus succinogenes 130Z was investigated in batch mode, using anaerobic bottles and bioreactors. Enzymatic hydrolysis and fermentation of hemp material pretreated with 3% H2O2 resulted...... in the highest overall sugar yield (73.5%), maximum succinic acid titer (21.9gL-1), as well as the highest succinic acid yield (83%). Results obtained clearly demonstrated the impact of different pretreatments on the bioconversion efficiency of industrial hemp into succinic acid....

  15. Characterization and biological depectinization of hemp fibers originating from different stem sections

    Liu, Ming; Fernando, Dinesh; Meyer, Anne S.

    2015-01-01

    The wide variation of mechanical properties of natural fibers limits their applications in matrix compos-ites. The aim of this study is to evaluate the properties of hemp fibers from different stem sections (top,middle and bottom) and to assess fungal retting pretreatment of hemp from different...... stem sections withthe white rot fungi Phlebia radiata Cel 26 and Ceriporiopsis subvermispora. For the untreated hemp fibers,no apparent difference in tensile behavior for fiber bundles from different stem sections was observed,and more than 90% tested samples demonstrated plastic flow behavior. Fiber...... strength and stiffness werehighest for the fibers from the top and middle stem sections. These properties were related to the compositional make up and morphological properties of hemp fibers, notably the secondary fiber cell contents.In fungal retting, there was a strong dependence of depectinization...

  16. Experimental Investigation on Mechanical Properties of Hemp/E-Glass Fabric Reinforced Polyester Hybrid Composites

    M R SANJAY

    2016-09-01

    Full Text Available This research work has been focusing on Hemp fibers has an alternative reinforcement for fiber reinforced polymer composites due to its eco-friendly and biodegradable characteristics. This work has been carried out to evaluate the mechanical properties of hemp/E-glass fabrics reinforced polyester hybrid composites. Vacuum bagging method was used for the preparation of six different kinds of hemp/glass fabrics reinforced polyester composite laminates as per layering sequences. The tensile, flexural, impact and water absorption tests of these hybrid composites were carried out experimentally according to ASTM standards. It reveals that an addition of E-glass fabrics with hemp fabrics can increase the mechanical properties of composites and decrease the water absorption of the hybrid composites.

  17. Properties and nutritional value of wheat bread enriched by hemp products

    Ivan Švec

    2015-08-01

    Full Text Available Hemp (Cannabis sativa is annual plant that is native to China and remained as important material for food, industrial  and medical purposes. As source of cannabinoids belongs to controversial, but due to its excellent nutritional profile, non-gluten protein, fat and fibre it has potential in bakery products. Addition of 5% - 20% of hemp press cake fine flour and fine wholemeal significantly increased dietary fibre content, but their influence on volume of laboratory baked bread was different. Reflecting actual dosage, both types of hemp press cake flour diminished bun sizes about 6% - 33%; volumes of bread containing hulled wholemeal were comparable to standard (mean 310 mL/100 g vs. 333 ml/100 g, respectively. Only dehulled wholemeal hemp form increased the bread specific volume (6% - 30%, especially as 10% fortification (434 mL/100 g. Six Canadian hemp products were added as 10% and 20% on wheat flour base, comprising fine hemp flour and coarse hemp powder, dehulled whole seeds, hulled hemp seeds with sea salt as well as 50% and 43% hemp protein concentrates (KP1-KP6, respectively. The higher level of KP1, KP2, KP5 and KP6, the lower bread specific volumes were determined (decrease about 9% - 48%. Soft increase in buns size caused by 10% and 20% KP3 (323 and 319 ml/100 g vs. 296 mL/100 g was insignificant. The effect of KP4 was reversely verifiable, magnifying the parameter about 25% and 17%, respectively. In terms of protein content in bread, a level 11.75% in wheat bread has risen to approx. 14.5% and 18.0% when 10% and 20% of KP3 and KP5, respectively, was included into bread recipe. All six Canadian hemp products increased dietary fibre content in bread, mainly owing to KP4 and both protein concentrates (up to 4 and 3 times, respectively. Incorporation of hemp flour up to the level of 10% positively affected bread sensorial properties.

  18. DETERMINATION OF CRYSTALLINITY INDEX OF CARBOHYDRATE COMPONENTS IN HEMP (CANNABIS SATIVA L. WOODY CORE BY MEANS OF FT-IR SPECTROSCOPY

    Esat Gümüşkaya

    2005-04-01

    Full Text Available In this study; it was investigated chemical compositions of hemp woody core and changes in crystallinity index of its carbohydrate components by using FT-IR spectroscopy was investigated. It was determined that carbohyrate components ratio in hemp woody core were similar to that in hard wood, but lignin content in hemp woody core was higher than in hard wood. Crystallinity index of carbohydrate components in hemp woody core increased by removing amorphous components. It was designated that monoclinic structure in hemp woody core and its carbohydrate components was dominant, but triclinic ratio increased by treated chemical isolation of carbohydrate from hemp woody core.

  19. Simulation of hemp fibre bundle and cores using discrete element method

    Al-Amin Sadek, M.; Chen, Y. [Manitoba Univ., Winnipeg, MB (Canada). Dept. of Biosystems Engineering; Lague, C. [Ottawa Univ., Ottawa, ON (Canada). Faculty of Engineering; Landry, H. [Prairie Agricultural Machinery Inst., Humboldt, SK (Canada); Peng, Q. [Manitoba Univ., Winnipeg, MB (Canada). Dept. of Mechanical and Manufacturing Engineering; Zhong, W. [Manitoba Univ., Winnipeg, MB (Canada). Dept. of Textile Sciences

    2010-07-01

    The mechanical behaviour of hemp fibre and core must be well understood in order to obtain high-grade hemp fibre that is currently in high demand for various industrial applications. Modelling by discrete element method can simulate the mechanical behaviour of such materials. A commercial discrete element software called Particle Flow Code was used in this study. In particular, the 3-dimension (PFC3D) was used to simulate hemp fibre and core. Since the basic PFC3D particles are spherical, the individual virtual hemp fibres were defined as strings of balls held together by PFC3D parallel bonds. The study showed that the virtual fibre is flexible and can bend and break by forces. This reflects the characteristics of hemp fibre. Using the clump logic of PFC3D, the virtual hemp core was defined as a rigid and unbreakable body, which reflect the characteristics of the core. The virtual fibre and core were defined with several microproperties, some of which were previously calibrated. The PFC3D bond properties were calibrated in this study. They included normal and shear stiffness; pb{sub k}n and pb{sub k}s; normal and shear strength; and bond disk radius, R of the virtual fibre. The calibration started with developing a PFC3D model to simulate fibre tensile test. The microproperties of virtual fibre and core were calibrated by running the PFC3D model. Literature data from fibre tensile tests was compared with simulation results.

  20. Effects of chemical treatments on hemp fibre structure

    Kabir, M.M., E-mail: kabirm@usq.edu.au [Centre of Excellence in Engineered Fibre Composite (CEEFC), Faculty of Engineering and Surveying, University of Southern Queensland, Toowoomba, Queensland 4350 (Australia); Wang, H. [Centre of Excellence in Engineered Fibre Composite (CEEFC), Faculty of Engineering and Surveying, University of Southern Queensland, Toowoomba, Queensland 4350 (Australia); Lau, K.T. [Centre of Excellence in Engineered Fibre Composite (CEEFC), Faculty of Engineering and Surveying, University of Southern Queensland, Toowoomba, Queensland 4350 (Australia); Department of Mechanical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong Special Administrative Region (Hong Kong); Cardona, F. [Centre of Excellence in Engineered Fibre Composite (CEEFC), Faculty of Engineering and Surveying, University of Southern Queensland, Toowoomba, Queensland 4350 (Australia)

    2013-07-01

    In this study, hemp fibres were treated with alkali, acetyl and silane chemicals. Fibre constituents such as cellulose, hemicellulose and lignin constituents were separated from treated fibres. The chemical and thermal influences of these constituents on the treated fibres were examined by using scanning electron microscope (SEM), fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). Experimental results revealed that, hemicellulose was degraded faster than that of cellulose and lignin. Cellulose exhibited better thermal stability and lignin was degraded in a wide range of temperatures. The hydrophilic nature of the fibres was predominantly caused by the presence of hemicellulose and then lignin constituents. Hemicellulose and lignin were mostly removed by the alkalisation with higher concentrations of NaOH, followed by acetylation. Silane treatment could not remove the hemicellulose and lignin, rather this treatment facilitated coupling with the fibre constituents.

  1. Effects of chemical treatments on hemp fibre structure

    Kabir, M.M.; Wang, H.; Lau, K.T.; Cardona, F.

    2013-01-01

    In this study, hemp fibres were treated with alkali, acetyl and silane chemicals. Fibre constituents such as cellulose, hemicellulose and lignin constituents were separated from treated fibres. The chemical and thermal influences of these constituents on the treated fibres were examined by using scanning electron microscope (SEM), fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC). Experimental results revealed that, hemicellulose was degraded faster than that of cellulose and lignin. Cellulose exhibited better thermal stability and lignin was degraded in a wide range of temperatures. The hydrophilic nature of the fibres was predominantly caused by the presence of hemicellulose and then lignin constituents. Hemicellulose and lignin were mostly removed by the alkalisation with higher concentrations of NaOH, followed by acetylation. Silane treatment could not remove the hemicellulose and lignin, rather this treatment facilitated coupling with the fibre constituents.

  2. Growth models for morphological traits of sunn hemp

    Cláudia Marques de Bem

    2017-10-01

    Full Text Available The objective of the present study was to fit Gompertz and Logistic nonlinear to descriptions of morphological traits of sunn hemp. Two uniformity trials were conducted and the crops received identical treatment in all experimental area. Sunn hemp seeds were sown in rows 0.5 m apart with a plant density of 20 plants per row meter in a usable area of 52 m × 50 m. The following morphological traits were evaluated: plant height (PH, number of leaves (NL, stem diameter (SD, and root length (RL. These traits were assessed daily during two sowing periods—seeds were sown on October 22, 2014 (first period and December 3, 2014 (second period. Four plants were randomly collected daily, beginning 7 days after first period and 13 days after for second period, totaling 94 and 76 evaluation days, respectively. For Gompertz models the equation was used y=a*e^((?-e?^((b-c*xiand Logistic models the equation was used yi= a/(1+e^((-b-c*xi. The inflection points of the Gompertz and Logistic models were calculated and the goodness of fit was quantified using the adjusted coefficient of determination, Akaike information criterion, standard deviation of residuals, mean absolute deviation, mean absolute percentage error, and mean prediction error. Differences were observed between the Gompertz and Logistic models and between the experimental periods in the parameter estimate for all morphological traits measured. Satisfactory growth curve fittings were achieved for plant height, number of leaves, and stem diameter in both models using the evaluation criteria: coefficient of determination (R², Akaike information criterion (AIC, standard deviation of residuals (SDR, mean absolute deviation (MAD, mean absolute percentage error (MAPE, and mean prediction error (MPE.

  3. LACEwING: A New Moving Group Analysis Code

    Riedel, Adric R. [Department of Astronomy, California Institute of Technology, Pasadena, CA 91125 (United States); Blunt, Sarah C.; Faherty, Jacqueline K. [Department of Astrophysics, American Museum of Natural History, New York, NY 10024 (United States); Lambrides, Erini L. [Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218 (United States); Rice, Emily L. [Department of Engineering Science and Physics, The College of Staten Island, Staten Island, NY 10314 (United States); Cruz, Kelle L., E-mail: arr@astro.caltech.edu [Department of Physics and Astronomy, Hunter College, New York, NY 10065 (United States)

    2017-03-01

    We present a new nearby young moving group (NYMG) kinematic membership analysis code, LocAting Constituent mEmbers In Nearby Groups (LACEwING), a new Catalog of Suspected Nearby Young Stars, a new list of bona fide members of moving groups, and a kinematic traceback code. LACEwING is a convergence-style algorithm with carefully vetted membership statistics based on a large numerical simulation of the Solar Neighborhood. Given spatial and kinematic information on stars, LACEwING calculates membership probabilities in 13 NYMGs and three open clusters within 100 pc. In addition to describing the inputs, methods, and products of the code, we provide comparisons of LACEwING to other popular kinematic moving group membership identification codes. As a proof of concept, we use LACEwING to reconsider the membership of 930 stellar systems in the Solar Neighborhood (within 100 pc) that have reported measurable lithium equivalent widths. We quantify the evidence in support of a population of young stars not attached to any NYMGs, which is a possible sign of new as-yet-undiscovered groups or of a field population of young stars.

  4. Exploring Physics with Computer Animation and PhysGL

    Bensky, T. J.

    2016-10-01

    This book shows how the web-based PhysGL programming environment (http://physgl.org) can be used to teach and learn elementary mechanics (physics) using simple coding exercises. The book's theme is that the lessons encountered in such a course can be used to generate physics-based animations, providing students with compelling and self-made visuals to aid their learning. Topics presented are parallel to those found in a traditional physics text, making for straightforward integration into a typical lecture-based physics course. Users will appreciate the ease at which compelling OpenGL-based graphics and animations can be produced using PhysGL, as well as its clean, simple language constructs. The author argues that coding should be a standard part of lower-division STEM courses, and provides many anecdotal experiences and observations, that include observed benefits of the coding work.

  5. Inge Lehmann’s work materials and seismological epistolary archive

    Erik Hjortenberg

    2009-06-01

    Full Text Available

     

    The Inge Lehmann archive contains thousands of seismological work documents from Inge Lehmann’s private home. For a long time the author thought that the main concern was to keep the documents for posterity. There is now a renewed interest in Inge Lehmann, and some documents were presented in a poster at ESC Potsdam 2004, and the collection of documents were scanned and catalogued 2005-2006 at Storia Geofisica Ambiente in Bologna. Inge Lehmann (1888-1993 is famous for her discovery in 1936 of the earth’s inner core and for work on the upper mantle. A short biography is given. After her retirement in 1953 she worked at home in Denmark, and abroad in USA and in Canada. She took part in the creation of the European Seismological Commission in 1951, and in the creation of the International Seismological Centre in 1964. Inge Lehmann received many awards. Some letters from her early correspondence with Harold Jeffreys are discussed, they show how the inner core was discussed already in 1932. A few of the author’s reminiscences of Inge Lehmann are given.


  6. Crystal structure of inhibitor of growth 4 (ING4) dimerization domain reveals functional organization of ING family of chromatin-binding proteins.

    Culurgioni, Simone; Muñoz, Inés G; Moreno, Alberto; Palacios, Alicia; Villate, Maider; Palmero, Ignacio; Montoya, Guillermo; Blanco, Francisco J

    2012-03-30

    The protein ING4 binds to histone H3 trimethylated at Lys-4 (H3K4me3) through its C-terminal plant homeodomain, thus recruiting the HBO1 histone acetyltransferase complex to target promoters. The structure of the plant homeodomain finger bound to an H3K4me3 peptide has been described, as well as the disorder and flexibility in the ING4 central region. We report the crystal structure of the ING4 N-terminal domain, which shows an antiparallel coiled-coil homodimer with each protomer folded into a helix-loop-helix structure. This arrangement suggests that ING4 can bind simultaneously two histone tails on the same or different nucleosomes. Dimerization has a direct impact on ING4 tumor suppressor activity because monomeric mutants lose the ability to induce apoptosis after genotoxic stress. Homology modeling based on the ING4 structure suggests that other ING dimers may also exist.

  7. Testing of DNA isolation for the identification of hemp

    Tomáš Vyhnánek

    2015-12-01

    Full Text Available Hemp is diploid organism (2n = 2x = 20, genome size 534 Mb with nine pairs of autosomes plus XX (♀ or XY (♂ chromosomes. Cannabis sativa L. is an important economic plant for the production of food, fibre, oils, and intoxicants. Genotypes (varieties or chemovar of hemp with low Δ9-tetrahydrocannabinol content are used for industrial applications. Varieties with high Δ9-tetrahydrocannabinol or high cannabidiol content are used for medicinal applications. Biochemical and molecular methods can be used for identification and classification. An important step for molecular biology methods is to obtain the matrix of the native and sufficiently pure DNA. We tested two different experimental variant of samples (20 mg and 100 mg of seeds, oilcake and dried flowers for analysis of the Italian variety Carmagnola for analysis (harvested in 2014, Hempoint Ltd., Czech Republic. The DNeasy® Plant Mini Kit (Qiagen, GE was used to isolate the DNA. The DNA concentration and purity was assessed by agarose electrophoresis and via a spectrophotometer. Samples of lower weight yielded lower values of DNA concentration (average 16.30 - 38.90 ng.µL-1, but with better purity than samples of higher weight (ratio A260nm/A280nm for low-weight samples was near 1.80. To test the applicability of DNA analysis, we used two SSR markers (CAN1347 and CAN2913. PCR products were separated on 1% agarose and on 8% polyacrylamide electrophoresis. DNA samples obtained from samples of higher weight exhibited less PCR amplification than samples of lower weight. We found no effect of sample weight on the formation of non-specific amplification products during the PCR reaction. Based on our results we can be recommended for practical isolation procedure using DNeasy® Plant Mini Kit with lower of sample weight (20 mg. In future work the procedure for DNA isolating from wheat-cannabis products, e. g. breads, rolls or pasta, will be optimized.

  8. 78 FR 39023 - ING Investments, LLC, et al.;

    2013-06-28

    ... SECURITIES AND EXCHANGE COMMISSION [Investment Company Act Release No. 30566; File No. 812-14111] ING Investments, LLC, et al.; Notice of Application June 24, 2013. AGENCY: Securities and Exchange Commission (``Commission''). ACTION: Notice of an application under section 6(c) of the Investment Company...

  9. SUMOylation of the ING1b tumor suppressor regulates gene transcription

    Satpathy, Shankha; Guérillon, Claire; Kim, Tae-Sun

    2014-01-01

    members of histone deacetylase complexes, whereas ING3-5 are stoichiometric components of different histone acetyltransferase complexes. The INGs target these complexes to histone marks, thus acting as epigenetic regulators. ING proteins affect angiogenesis, apoptosis, DNA repair, metastasis......1b E195A), we further demonstrate that ING1b SUMOylation regulates the binding of ING1b to the ISG15 and DGCR8 promoters, consequently regulating ISG15 and DGCR8 transcription. These results suggest a role for ING1b SUMOylation in the regulation of gene transcription....

  10. Silica Treatments: A Fire Retardant Strategy for Hemp Fabric/Epoxy Composites

    Francesco Branda

    2016-08-01

    Full Text Available In this paper, for the first time, inexpensive waterglass solutions are exploited as a new, simple and ecofriendly chemical approach for promoting the formation of a silica-based coating on hemp fabrics, able to act as a thermal shield and to protect the latter from heat sources. Fourier Transform Infrared (FTIR and solid-state Nuclear Magnetic Resonance (NMR analysis confirm the formation of –C–O–Si– covalent bonds between the coating and the cellulosic substrate. The proposed waterglass treatment, which is resistant to washing, seems to be very effective for improving the fire behavior of hemp fabric/epoxy composites, also in combination with ammonium polyphosphate. In particular, the exploitation of hemp surface treatment and Ammonium Polyphosphate (APP addition to epoxy favors a remarkable decrease of the Heat Release Rate (HRR, Total Heat Release (THR, Total Smoke Release (TSR and Specific Extinction Area (SEA (respectively by 83%, 35%, 45% and 44% as compared to untreated hemp/epoxy composites, favoring the formation of a very stable char, as also assessed by Thermogravimetric Analysis (TGA. Because of the low interfacial adhesion between the fabrics and the epoxy matrix, the obtained composites show low strength and stiffness; however, the energy absorbed by the material is higher when using treated hemp. The presence of APP in the epoxy matrix does not affect the mechanical behavior of the composites.

  11. Sustainable Bio-Aggregate-Based Composites Containing Hemp Hurds and Alternative Binder

    Nadezda Stevulova

    2018-02-01

    Full Text Available This experimental study was focused on the application of a surface-modified hemp- hurds aggregate into composites using an alternative binder of MgO-cement. This paper presents the results of the comparative study of the parameters (chemical and physico-chemical modification, and hardening time affecting the physical (density, thermal conductivity coefficient and water-absorption behavior and mechanical properties (compressive strength of the bio-aggregate-based composite. A test of the parameters of the bio-composite samples showed some differences, which were determined by the chemical and surface properties of the modified filler, and which affected the mechanisms of hardening. The bulk density values of the hemp hurd composites hardened for 28 days place this material in the lightweight category of composites. The values of water absorption and the thermal conductivity coefficient of bio-composites decreased, and the strength parameter increased with an increase in the hardening time. The lower values of compressive strength, water absorption, and thermal conductivity coefficient (except for the ethylenediaminetetraacetic-acid-treated filler were observed in composites based on fillers chemically treated with NaOH and Ca(OH2 compared to referential composites (based on original hemp hurds. This is related to changes in the chemical composition of hemp hurds after chemical modification. The composites with ultrasound-treated hemp hurds had the greatest strengths at each hardening time. This is related to pulping the bundles of fibers and forming a larger surface area for bonding in the matrix.

  12. Characterization of Lignanamides from Hemp (Cannabis sativa L.) Seed and Their Antioxidant and Acetylcholinesterase Inhibitory Activities.

    Yan, Xiaoli; Tang, Jiajing; dos Santos Passos, Carolina; Nurisso, Alessandra; Simões-Pires, Claudia Avello; Ji, Mei; Lou, Hongxiang; Fan, Peihong

    2015-12-16

    Hemp seed is known for its content of fatty acids, proteins, and fiber, which contribute to its nutritional value. Here we studied the secondary metabolites of hemp seed aiming at identifying bioactive compounds that could contribute to its health benefits. This investigation led to the isolation of 4 new lignanamides, cannabisin M (2), cannabisin N (5), cannabisin O (8), and 3,3'-demethyl-heliotropamide (10), together with 10 known lignanamides, among which 4 was identified for the first time from hemp seed. Structures were established on the basis of NMR, HR-MS, UV, and IR as well as by comparison with the literature data. Lignanamides 2, 7, and 9-14 showed good antioxidant activity, among which 7, 10, and 13 also inhibited acetylcholinesterase in vitro. The newly identified compounds in this study add to the diversity of hemp seed composition, and the bioassays implied that hemp seed, with lignanamides as nutrients, may be a good source of bioactive and protective compounds.

  13. Performance of four European hemp cultivars cultivated under different agronomic experimental conditions in the Eastern Cape Province, South Africa

    Blouw, LS

    2005-10-01

    Full Text Available of Fibre Hemp, Publication Agricultural Engineering, 31, University of Helsinki, 2001. 8. H.S. Sankari, Comparison of Bast Fibre Yield and Mechanical Fibre Properties of Hemp (Cannabis sativa L) cultivars, Industrial Crops and Products, 11, 73-84, 2000...

  14. Evaluation of Properties of Unidirectional Hemp/Polypropylene Composites: Influence of Fiber Content and Fiber/Matrix Interface Variables

    Plackett, David; Løgstrup Andersen, Tom; Lilholt, Hans

    2002-01-01

    Flament-wound textile hemp yarn was used in combination with unmodified or maleated polypropylene (PP) films to produce plates of unidirectional composites.......Flament-wound textile hemp yarn was used in combination with unmodified or maleated polypropylene (PP) films to produce plates of unidirectional composites....

  15. Planting date and seeding rate effects on sunn hemp biomass and nitrogen production for a winter cover crop

    Sunn hemp (Crotalaria juncea L.) is a tropical legume that produces plant biomass and nitrogen (N) quickly. Our objectives were to assess the growth of a new sunn hemp cultivar breed to produce seed in a temperate climate and determine the residual N effect on a subsequent rye (Secale cereale L.) wi...

  16. Molecular Investigation of the Stem Snap Point in Textile Hemp

    Marc Behr

    2017-12-01

    Full Text Available Fibre crops are important natural resources, as they sustainably provide bast fibres, an economically-valuable raw material used in the textile and biocomposite sectors. Among fibre crops, textile hemp (Cannabis sativa L. is appreciated for its long and strong gelatinous bast fibres. The stem of fibre crops is a useful system for cell wall-oriented studies, because it shows a strong tissue polarity with a lignified inner core and a cellulosic hypolignified cortex, as well as a basipetal lignification gradient. Along the stem axis of fibre crops, a specific region, denoted snap point, marks the transition from elongation (above it to fibre thickening (below it. After empirically determining the snap point by tilting the plant, we divided the stem segment containing it into three non-overlapping consecutive regions measuring 1 cm each, and carried out targeted RT-qPCR on cell wall-related genes separately, in outer and inner tissues. Different gene clusters can be observed, two of which are the major gene groups, i.e., one group with members expressed at higher levels in the inner tissues, and one group whose genes are more expressed in the cortex. The present results provide a molecular validation that the snap point is characterised by a gradient of events associated with the shift from fibre elongation to thickening.

  17. Thermal and mechanical properties of NaOH treated hemp fabric and calcined nanoclay-reinforced cement nanocomposites

    Hakamy, A.; Shaikh, F.U.A.; Low, I.M.

    2015-01-01

    Highlights: • Fabrication of nanoclay and hemp fabric-reinforced cement composites. • The optimum nanoclay and hemp fabric content is 1.0 and 6.9 wt.% respectively. • Surface-treated hemp fabric-reinforced cement composites demonstrated better mechanical properties. • Surface modification of hemp fabric was effective in improving the hemp fabric-cement matrix adhesion. - Abstract: Cement nanocomposites reinforced with hemp fabrics and calcined nanoclay (CNC) have been fabricated and investigated. CNC is prepared by heating nanoclay (Cloisite 30B) at 900 °C for 2 h. The influences of CNC dispersion on the mechanical properties and thermal properties of these composites have been characterized in terms of porosity, density, water absorption, flexural strength, fracture toughness, impact strength and thermal stability. The microstructure is investigated using Quantitative X-ray Diffraction Analysis (QXDA) and High Resolution Transmission Electron Microscopy (HRTEM). The effects of alkali (NaOH) treatment of hemp fabric on the mechanical properties of hemp fabric-reinforced cement composites with different fabric contents of 4.5, 5.7, 6.9 and 8.1 wt% are also investigated. Results show that the optimum hemp fabric content is 6.9 wt% (i.e. 6 fabric layers). Results also indicated that physical, mechanical and thermal properties were enhanced due to the addition of CNC into the cement matrix and the optimum content of CNC was 1 wt%. The treated hemp fabric-reinforced nanocomposites containing 1 wt% CNC exhibited the highest flexural strength, fracture toughness, impact strength and thermal stability by virtue of good fibre–matrix interface. This environmentally friendly nanocomposite can be used for various construction applications such as ceilings and roofs

  18. Compositional changes in industrial hemp biomass (Cannabis sativa L.) induced by electron beam irradiation Pretreatment

    Sung, Yong Joo [Department of Biobased Materials, College of Agriculture and Life Science, Chungnam National University, Daejeon 305-764 (Korea, Republic of); Shin, Soo-Jeong [Department of Wood and Paper Science, College of Agriculture and Life Science, Chungbuk National University, Cheongju 361-763 (Korea, Republic of)

    2011-07-15

    The effects of electron beam irradiation on chemical decomposition of industrial hemp biomass were evaluated at doses of 150, 300, and 450 kGy. The quantity of decomposed components was indirectly estimated by measuring changes in alkaline extraction. The more severe degradation of structural components induced by higher irradiation doses resulted in larger amounts of alkaline extract. Carbohydrate compositional analysis using {sup 1}H-NMR spectroscopy was applied to quantitatively investigate changes in the polysaccharides of the industrial hemp. The xylose peak intensity in the NMR spectra decreased with increasing electron irradiation dose, indicating that xylan was more sensitive to electron beam irradiation than cellulose. -- Highlights: {yields} The more severe degradation of structural components induced by higher irradiation. {yields} Carbohydrate analysis was applied to quantitatively investigate changes in the industrial hemp. {yields} Xylan was more sensitive to electron beam irradiation than cellulose.

  19. Effects of Environmental Surface Modification Methods on Physical Properties of Hemp Fibers

    Nigar MERDAN

    2017-11-01

    Full Text Available In this study, hemp fibers have been pre-treated with laccase enzyme in different concentrations (1%, 2% and 3% w/v for different durations using conventional, ultrasonic energy and microwave energy methods. Weight loss (%, tensile strength, elongation (%, whiteness (%, and surface topography (SEM properties of pre-treated hemp fibers were investigated. After processing with laccase enzyme, the energy consumptions of these three methods were compared. Best results have been obtained in 20 minutes with the conventional method, 5 minutes with the ultrasonic energy method, and 1 minute with the microwave energy method. With laccase enzyme, microwave treated hemp fibers were improved after 3 minutes treatment. SEM results have also proved the improved physical properties and color changes due to the rough surface structure. DOI: http://dx.doi.org/10.5755/j01.ms.23.4.17469

  20. Compositional changes in industrial hemp biomass (Cannabis sativa L.) induced by electron beam irradiation Pretreatment

    Sung, Yong Joo; Shin, Soo-Jeong

    2011-01-01

    The effects of electron beam irradiation on chemical decomposition of industrial hemp biomass were evaluated at doses of 150, 300, and 450 kGy. The quantity of decomposed components was indirectly estimated by measuring changes in alkaline extraction. The more severe degradation of structural components induced by higher irradiation doses resulted in larger amounts of alkaline extract. Carbohydrate compositional analysis using 1 H-NMR spectroscopy was applied to quantitatively investigate changes in the polysaccharides of the industrial hemp. The xylose peak intensity in the NMR spectra decreased with increasing electron irradiation dose, indicating that xylan was more sensitive to electron beam irradiation than cellulose. -- Highlights: → The more severe degradation of structural components induced by higher irradiation. → Carbohydrate analysis was applied to quantitatively investigate changes in the industrial hemp. → Xylan was more sensitive to electron beam irradiation than cellulose.

  1. Influence of agroclimatic conditions on content of main cannabinoids in industrial hemp (Cannabis sativa L.

    Sikora Vladimir

    2011-01-01

    Full Text Available In a six-year field experiment eight industrial hemp varieties were examined for ∆9-tetrahydrocannabinol (THC and cannabidiol (CBD contents. The study analyzed the influence of growing degree days (GDD, soil temperature at 5 cm, air humidity, and growing season precipitation on the levels of the main cannabinoids in this crop. Agroclimatic conditions do not influence THC and CBD contents in industrial hemp in the same way. THC synthesis and accumulation are under the significant positive influence of GDD and air humidity and under the negative influence of precipitation, while soil temperature at 5 cm has no significant effect on it. Soil temperature at 5 cm has a significant positive effect on the CBD content, as do GDD. Precipitation has a negative influence on the CBD content of industrial hemp, while air humidity has no influence on it.

  2. New ACE-Inhibitory Peptides from Hemp Seed (Cannabis sativa L.) Proteins.

    Orio, Lara P; Boschin, Giovanna; Recca, Teresa; Morelli, Carlo F; Ragona, Laura; Francescato, Pierangelo; Arnoldi, Anna; Speranza, Giovanna

    2017-12-06

    A hemp seed protein isolate, prepared from defatted hemp seed meals by alkaline solubilization/acid precipitation, was subjected to extensive chemical hydrolysis under acid conditions (6 M HCl). The resulting hydrolysate was fractionated by semipreparative RP-HPLC, and the purified fractions were tested as inhibitors of angiotensin converting enzyme (ACE). Mono- and bidimensional NMR experiments and LC-MS analyses led to the identification of four potentially bioactive peptides, i.e. GVLY, IEE, LGV, and RVR. They were prepared by solid-phase synthesis, and tested for ACE-inhibitory activity. The IC 50 values were GVLY 16 ± 1.5 μM, LGV 145 ± 13 μM, and RVR 526 ± 33 μM, confirming that hemp seed may be a valuable source of hypotensive peptides.

  3. Hemp fibres: Enzymatic effect of microbial processing on fibre bundle structure

    Thygesen, Anders; Liu, Ming; Meyer, Anne S.

    2013-01-01

    The effects of microbial pretreatment on hemp fibres were evaluated after microbial retting using the white rot fungi Ceriporiopsis subvermispora and Phlebia radiata Cel 26 and water retting. Based on chemical composition, P. radiata Cel 26 showed the highest selectivity for pectin and lignin...... degradation and lowest cellulose loss (14%) resulting in the highest cellulose content (78.4%) for the treated hemp fibres. The pectin and lignin removal after treatment with P. radiata Cel 26 were of the order 82% and 50%, respectively. Aligned epoxy-matrix composites were made from hemp fibres defibrated...... with the microbial retting to evaluate the effects on their ultrastructure. SEM microscopy of the composites showed low porosity on the fibre surfaces after defibration with P. radiata Cel 26 and C. subvermispora indicating good epoxy polymer impregnation. In contrast, fibres treated by water retting and the raw...

  4. Ethanol production from industrial hemp: effect of combined dilute acid/steam pretreatment and economic aspects

    Gunnarsson, Ingólfur Bragi; Svensson, Sven-Erik; Prade, Thomas

    2014-01-01

    In the present study, combined steam (140-180 °C) and dilute-acid pre-hydrolysis (0.0-2.0%) were applied to industrial hemp (Cannabis sativa L.), as pretreatment for lignocellulosic bioethanol production. The influence of the pretreatment conditions and cultivation type on the hydrolysis and etha......In the present study, combined steam (140-180 °C) and dilute-acid pre-hydrolysis (0.0-2.0%) were applied to industrial hemp (Cannabis sativa L.), as pretreatment for lignocellulosic bioethanol production. The influence of the pretreatment conditions and cultivation type on the hydrolysis...... pretreated at the optimal conditions showed positive economic results. The type of hemp cultivation (organic or conventional) did not influence significantly the effectiveness of the pretreatment and subsequent enzymatic hydrolysis and ethanol fermentation....

  5. Characterization of chemically and enzymatically treated hemp fibres using atomic force microscopy and spectroscopy

    George, Michael; Mussone, Paolo G. [Biorefining Conversions and Fermentations Laboratory, Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada T6E 2P5 (Canada); Abboud, Zeinab [Biorefining Conversions and Fermentations Laboratory, Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada T6E 2P5 (Canada); Department of Physics, University of Guelph, Guelph, ON, Canada N1G 2W1 (Canada); Bressler, David C., E-mail: david.bressler@ualberta.ca [Biorefining Conversions and Fermentations Laboratory, Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada T6E 2P5 (Canada)

    2014-09-30

    The mechanical and moisture resistance properties of natural fibre reinforced composites are dependent on the adhesion between the matrix of choice and the fibre. The main goal of this study was to investigate the effect of NaOH swelling of hemp fibres prior to enzymatic treatment and a novel chemical sulfonic acid method on the physical properties of hemp fibres. The colloidal properties of treated hemp fibres were studied exclusively using an atomic force microscope. AFM imaging in tapping mode revealed that each treatment rendered the surface topography of the hemp fibres clean and exposed the individual fibre bundles. Hemp fibres treated with laccase had no effect on the surface adhesion forces measured. Interestingly, mercerization prior to xylanase + cellulase and laccase treatments resulted in greater enzyme access evident in the increased adhesion force measurements. Hemp fibres treated with sulfonic acid showed an increase in surface de-fibrillation and smoothness. A decrease in adhesion forces for 4-aminotoulene-3-sulfonic acid (AT3S) treated fibres suggested a reduction in surface polarity. This work demonstrated that AFM can be used as a tool to estimate the surface forces and roughness for modified fibres and that enzymatic coupled with chemical methods can be used to improve the surface properties of natural fibres for composite applications. Further, this work is one of the first that offers some insight into the effect of mercerization prior to enzymes and the effect on the surface topography. AFM will be used to selectively screen treated fibres for composite applications based on the adhesion forces associated with the colloidal interface between the AFM tip and the fibre surfaces.

  6. Preliminary Research Concerning Optimal Percentage of Hemp Hurds for Lining Panels and Filler Materials in Buildings

    Maria - Adriana GHERGHISAN

    2013-03-01

    Full Text Available Composite materials for liningst and wall fillermade of hemp hurds and mineral binders represent again in recovery of mineral binders and use ofrepresent lignocellulosic fiber resulted afterprocessing.This paper aims to establish the optimumpercentual range of hemp hurds that can beembedded in ceramic mass, which is able to supportin various stages, the physical and dimensionalintegrity, manipulation, transport and during sandingresistance, the remaining viable recipes being theones that successfully pass this preliminary test. It isexpected for these samples to have comparablethermal and acoustic properties with similar industrialproducts, currently manufactured, which givesthepractical applicability of these composites.

  7. DYNAMICS OF LEAF PEROXIDASE ACTIVITY DURING ONTOGENY OF HEMP PLANTS, IN RELATION TO SEXUAL PHENOTYPE

    Elena Truta

    2005-08-01

    Full Text Available During vegetation of female and male hemp plants (Cannabis sativa L., five quantitative determinations of peroxidase activities were made (40 days, 55 days, 70 days, 85 days, 105 days. Peroxidase activity presented some differences in hemp plants, between females and males, during their vegetation cycle. In female plants, before anthesis were registered peaks of peroxidase activities. The blossoming of male plants was coincident with the increase of catalitic action of peroxidase. Generally, the male plants displayed greater levels of peroxidasic activity.

  8. Co-Story-ing: Collaborative Story Writing with Children Who Fear

    Pehrsson, Dale-Elizabeth

    2007-01-01

    This article offers a guide for using collaborative story writing (co-story-ing), an assessment technique as well as a therapeutic intervention for children who demonstrate fears, extreme shyness and difficulty in establishing relationships. Co-story-ing draws from Gardner's Mutual Story Telling Technique. Co-story-ing guides clients as they…

  9. 75 FR 65620 - Inglis Hydropower, LLC; Notice of Application Ready for Environmental Analysis and Soliciting...

    2010-10-26

    ... Hydropower, LLC; Notice of Application Ready for Environmental Analysis and Soliciting Comments...: Inglis Hydropower, LLC. e. Name of Project: Inglis Hydropower Project. f. Location: The project would be... ready for environmental analysis at this time. l. The proposed 2.0-megawatt Inglis Hydropower Project...

  10. The tumor suppressors p33ING1 and p33ING2 interact with alien in vivo and enhance alien-mediated gene silencing.

    Fegers, Inga; Kob, Robert; Eckey, Maren; Schmidt, Oliver; Goeman, Frauke; Papaioannou, Maria; Escher, Niko; von Eggeling, Ferdinand; Melle, Christian; Baniahmad, Aria

    2007-11-01

    The tumor suppressor p33ING1 is involved in DNA repair and cell cycle regulation. Furthermore, p33ING1 is a transcriptional silencer that recognizes the histone mark for trimethylated lysine 4 at histone H3. Interestingly, expression of p33ING1 and p33ING2 is able to induce premature senescence in primary human fibroblasts. The corepressor Alien is involved in gene silencing mediated by selected members of nuclear hormone receptors. In addition, Alien acts as a corepressor for E2F1, a member of the E2F cell cycle regulatory family. Furthermore, recent findings suggest that Alien is complexed with transcription factors participating in DNA repair and chromatin. Here, using a proteomic approach by surface-enhanced laser desorption ionization and mass spectrometry (SELDI-MS) combined with immunological techniques, we show that Alien interacts in vivo with the tumor suppressor p33ING1 as well as with the related tumor suppressor candidate p33ING2. The interaction of Alien with p33ING1 and p33ING2 was confirmed in vitro with GST-pull-down, suggesting a direct binding of Alien to these factors. The binding domain was mapped to a central region of Alien. Functionally, the expression of p33ING1 or p33ING2 enhances the Alien-mediated silencing, suggesting that the interaction plays a role in transcriptional regulation. Thus, the findings suggest that the identified interaction between Alien and the tumor suppressors p33ING1 and p33ING2 reveals a novel cellular protein network.

  11. Immediate relation of ING to fast breeder reactor programs

    Lewis, W B

    1969-07-01

    The future large-scale use of nuclear energy is linked in the United States and other major countries to their fast breeder reactor development. Very serious basic problems have been discovered within the last two years, limiting the life in the high fast neutron flux at appropriate temperatures of materials, in particular of metals suitable for fuel cladding in sodium coolant. There is therefore a most urgent need for materials testing facilities under controlled conditions of temperature and neutron flux at sufficiently high ratings to match or surpass those required in commercially competitive fast breeder reactors. None of the test facilities yet planned for 1976 or sooner in the western world appears to match these conditions. The problem is mainly the difficulty of providing the high neutron flux effectively continuously. The spallation reaction in heavy elements was chosen as the basis of ING - the intense neutron generator, because it is the only known reaction that promises a fast neutron source density that is higher than can be controlled from the fission process. It is suggested that several countries will wish to consider urgently whether they should also explore the spallation reaction for the purpose of a fast neutron irradiation test facility. In view of the discontinuance of the ING project in Canada a favourable opportunity will exist over the next few months 10 obtain from Canada by direct personal contact details of the significant study that has been carried on for ING over the last five years. In the event that satisfactory materials are established within the lifetime of the spallation facilities they may continue to be used for the production of selected isotopes more profitably produced in high neutron fluxes. The facilities may be also used for the desirable preirradiation of thorium reactor fuel. The other research purposes planned for ING could also be served. (author)

  12. Immediate relation of ING to fast breeder reactor programs

    Lewis, W.B.

    1969-01-01

    The future large-scale use of nuclear energy is linked in the United States and other major countries to their fast breeder reactor development. Very serious basic problems have been discovered within the last two years, limiting the life in the high fast neutron flux at appropriate temperatures of materials, in particular of metals suitable for fuel cladding in sodium coolant. There is therefore a most urgent need for materials testing facilities under controlled conditions of temperature and neutron flux at sufficiently high ratings to match or surpass those required in commercially competitive fast breeder reactors. None of the test facilities yet planned for 1976 or sooner in the western world appears to match these conditions. The problem is mainly the difficulty of providing the high neutron flux effectively continuously. The spallation reaction in heavy elements was chosen as the basis of ING - the intense neutron generator, because it is the only known reaction that promises a fast neutron source density that is higher than can be controlled from the fission process. It is suggested that several countries will wish to consider urgently whether they should also explore the spallation reaction for the purpose of a fast neutron irradiation test facility. In view of the discontinuance of the ING project in Canada a favourable opportunity will exist over the next few months 10 obtain from Canada by direct personal contact details of the significant study that has been carried on for ING over the last five years. In the event that satisfactory materials are established within the lifetime of the spallation facilities they may continue to be used for the production of selected isotopes more profitably produced in high neutron fluxes. The facilities may be also used for the desirable preirradiation of thorium reactor fuel. The other research purposes planned for ING could also be served. (author)

  13. Loyola University distingue al Ing. Martínez

    Lezcano, Liseth

    2011-01-01

    El Ing. Axel Martínez, Director de Recursos Humanos de la Universidad Tecnológica de Panamá (UTP), recibió un reconocimiento que le hizo el Instituto de Recursos Humanos y Relaciones Industriales de Loyola University Chicago (LUC), como egresado destacado del Programa de Maestría en Recursos Humanos, por la prestigiosa carrera académica y por sus éxitos profesionales en un importante ambiente académico.

  14. Planting Date and Seeding Rate Effects on Sunn Hemp Biomass and Nitrogen Production for a Winter Cover Crop

    Kipling S. Balkcom

    2011-01-01

    Full Text Available Sunn hemp (Crotalaria juncea L. is a tropical legume that produces plant biomass and nitrogen (N quickly. Our objectives were to assess the growth of a new sunn hemp cultivar breed to produce seed in a temperate climate and determine the residual N effect on a rye (Secale cereale L. cover crop in east-central Alabama from 2007 to 2009. Plant populations, plant height, stem diameter, biomass production, and N content were determined for two sunn hemp planting dates, following corn (Zea mays L. and wheat (Triticum aestivum L. harvest, across different seeding rates (17, 34, 50, and 67 kg/ha. Rye biomass was measured the following spring. Sunn hemp biomass production was inconsistent across planting dates, but did relate to growing degree accumulation. Nitrogen concentrations were inversely related to biomass production, and subsequent N contents corresponded to biomass levels. Neither planting date nor seeding rate affected rye biomass production, but rye biomass averaged over both planting dates following wheat/sunn hemp averaged 43% and 33% greater than rye following fallow. Rye biomass following corn/sunn hemp was equivalent to fallow plots. Early planting dates are recommended for sunn hemp with seeding rates between 17 and 34 kg/ha to maximize biomass and N production.

  15. Effect of sunn hemp (Crotalaria juncea L.) cutting date and planting density on weed suppression in Georgia, USA.

    Morris, J Bradley; Chase, Carlene; Treadwell, Danielle; Koenig, Rosie; Cho, Alyssa; Morales-Payan, Jose Pable; Murphy, Tim; Antonious, George F

    2015-01-01

    A field study was conducted in 2008 and 2009 at the USDA, ARS, Plant Genetic Resources Conservation Unit in Griffin, GA, to investigate weed suppression by sunn hemp (Crotalaria juncea L). The objectives were to (1) evaluate the effects of apical meristem removal (AMR) at three dates [5, 6, and 7 wks after planting (WAP) on May 14, 2008 and May 21, 2009] and (2) assess the impact of seeding rates (11, 28, and 45 kg ha(-1)) on weed biomass reduction. Weed species were identified at 4, 8, and 12 wks after sunn hemp planting. Sunn hemp cutting date had no significant effect on weed suppression in 2008 but significant differences for grass weeds at 4, 8, and 12 WAP and for yellow nutsedge at 8 and 12 WAP did occur when compared to the control in 2009. In comparison to the sunn hemp-free control plot in 2009, all three seeding rates had reduced grass weed dry weights at 4, 8, and 12 WAP. The total mass of yellow nutsedge when grown with sunn hemp was reduced compared to the total mass of yellow nutsedge grown in the weedy check for all seeding rates at 8 and 12 WAP. Lower grass weed biomass was observed by 12 WAP for cutting dates and seeding rates during 2008 and 2009. Sunn hemp cutting date and seeding rate reduced branch numbers in both years. The reduction in sunn hemp seeding rates revealed a decrease in weed populations.

  16. Application of bokashi and sunn hemp (Crotalaria juncea L. to improve inorganic fertilizer efficiency on maize (Zea mays L.

    A.I. Yuliana

    2015-10-01

    Full Text Available A field experiment was conducted lo learn about the effect of Bokashi and Sunn hemp (Crotalaria juncea L. on maize production and inorganic fertilizer use efficiency on maize. The experiment was conducted in Jatikerto, Malang; at the altitude of 303 m above sea level, in Alfisol soil type, the average daily temperature ranges 21-33oC, from June to October 2013. The experiment was conducted as factorial, designed in a randomized block design (RBD. The first factor was dose of inorganic fertilizer (100% ; 75% and 50% of recommendation dose. The second factor was the organic fertilizer (Without organic fertilizer20 t Bokashi/ ha, 20 t Sunn hemp/ha, 10 t Bokashi/ha + 10 t Sunn hemp/ha. The results showed that application of 20 t Bokashi/ha, 20 t Sunn hemp/ha, and combination of 10 t Bokashi/ha + 10 t Sunn hemp/ha, along with the application of inorganic fertilizer by dose of 100% increased the yields of maize for about 41.8%; 47.6% and 54.7% (10.73 t/ha; 11.17 t/ha, and 11.71 t/ha, respectively. The yield and nutrient use efficiency in the treatment dose of 100% inorganic fertilizer did not have any significant difference from the application of 20 t Bokashi /ha, 20 t Sunn hemp/ha, and 10 t Bokashi/ha + 10 t Sunn hemp/ha along with doses of inorganic fertilization 75% and 50%. Therefore, the organic fertilizer of 20 t Bokashi/ ha, 20 t Sunn hemp/ha, and combination of 10 t Bokashi/ha + 10 t Sunn hemp/ha could reduce the need of inorganic fertilizer for about 50%.

  17. The Small Protein HemP Is a Transcriptional Activator for the Hemin Uptake Operon in Burkholderia multivorans ATCC 17616.

    Sato, Takuya; Nonoyama, Shouta; Kimura, Akane; Nagata, Yuji; Ohtsubo, Yoshiyuki; Tsuda, Masataka

    2017-08-15

    Iron and heme play very important roles in various metabolic functions in bacteria, and their intracellular homeostasis is maintained because high concentrations of free forms of these molecules greatly facilitate the Fenton reaction-mediated production of large amounts of reactive oxygen species that severely damage various biomolecules. The ferric uptake regulator (Fur) from Burkholderia multivorans ATCC 17616 is an iron-responsive global transcriptional regulator, and its fur deletant exhibits pleiotropic phenotypes. In this study, we found that the phenotypes of the fur deletant were suppressed by an additional mutation in hemP The transcription of hemP was negatively regulated by Fur under iron-replete conditions and was constitutive in the fur deletant. Growth of a hemP deletant was severely impaired in a medium containing hemin as the sole iron source, demonstrating the important role of HemP in hemin utilization. HemP was required as a transcriptional activator that specifically binds the promoter-containing region upstream of a Fur-repressive hmuRSTUV operon, which encodes the proteins for hemin uptake. A hmuR deletant was still able to grow using hemin as the sole iron source, albeit at a rate clearly lower than that of the wild-type strain. These results strongly suggested (i) the involvement of HmuR in hemin uptake and (ii) the presence in ATCC 17616 of at least part of other unknown hemin uptake systems whose expression depends on the HemP function. Our in vitro analysis also indicated high-affinity binding of HemP to hemin, and such a property might modulate transcriptional activation of the hmu operon. IMPORTANCE Although the hmuRSTUV genes for the utilization of hemin as a sole iron source have been identified in a few Burkholderia strains, the regulatory expression of these genes has remained unknown. Our analysis in this study using B. multivorans ATCC 17616 showed that its HemP protein is required for expression of the hmuRSTUV operon, and the

  18. First Trials Of Hemp Cultivation For Fiber Applications In The East Of France Irrigation And Fertilization Analysis

    Lotfi Harrabi

    2017-10-01

    Full Text Available This paper presents results from the first hemp experiments in Aspach-le-bas France carried out during summer 2014. Field trials were performed testing the variety Futura 75 at a seed rate of 50 kgha. Two rain densities have been used to analyse the effect of irrigation on its growth. Seven different configurations have been also studied in this work in order to figure out the best one for the hemp cultivation in this region. The composition of hemp biomass in terms of cellulose hemicellulose and lignine has also been analysed for each configuration.

  19. Steam pretreatment of dry and ensiled industrial hemp for ethanol production

    Sipos, Balint; Reczey, Kati [Budapest University of Technology and Economics, Department of Applied Biotechnology and Food Science, Szt. Gellert ter 4., H-1111 Budapest (Hungary); Kreuger, Emma; Bjoernsson, Lovisa [Lund University, Department of Biotechnology, P.O. Box 124, SE-221 00 Lund (Sweden); Svensson, Sven-Erik [Swedish University of Agricultural Sciences, Department of Agriculture - Farming Systems, Technology and Product Quality, P.O. Box 104, SE-230 53 Alnarp (Sweden); Zacchi, Guido [Lund University, Department of Chemical Engineering, P.O. Box 124, SE-221 00 Lund (Sweden)

    2010-12-15

    Biomass can be converted into liquid and gaseous biofuels with good efficiency. In this study, the conversion of industrial hemp (Cannabis sativa L.), a biomass source that can be cultivated with a high biomass yield per hectare, was used. Steam pretreatment of dry and ensiled hemp was investigated prior to ethanol production. The pretreatment efficiency was evaluated in terms of sugar recovery and polysaccharide conversion in the enzymatic hydrolysis step. For both materials, impregnation with 2% SO{sub 2} followed by steam pretreatment at 210 C for 5 min were found to be the optimal conditions leading to the highest overall yield of glucose. Simultaneous saccharification and fermentation experiments carried out with optimised pretreatment conditions resulted in ethanol yields of 163 g kg{sup -1} ensiled hemp (dry matter) (71% of the theoretical maximum) and 171 g kg{sup -1} dry hemp (74%), which corresponds to 206-216 l Mg{sup -1} ethanol based on initial dry material. (author)

  20. Effect of water absorption on mechanical properties of hemp fibre/polyolefin’s composites

    Guduri, BBR

    2007-12-01

    Full Text Available malamaleated polypropylene and polyethylene were used. The tensile, flexural and impact properties of hemp fibre/polyolefin’s (PP & HDPE) composite specimens were found to increased with compatibilizer. The dry and water immersion specimens of the PP composites...

  1. Chopped hemp: Logistics, compaction and financial viability; Logistik, komprimering och ekonomi angaaende hackad hampa

    Soederstroem, Yvonne

    2010-05-15

    In this project compaction and logistics experiments were conducted using chopped hemp. The aim was to reduce the hemp to 250 kg/m3, as well as to identify the best possible logistical system for compaction and subsequent transportation to the end-user in terms of cost and environmental impact. The project primarily focused on landowners and power companies. Other stakeholders are industries, universities and other ongoing projects in related fields. These studies have shown that it is possible to compact chopped hemp from a density of 60 kg dm/m3 (0.30 MWh/m3) when harvesting directly into the container, to a density of 202 kg dm/m3 (1.01 MWh/m3) using the baler. The original compaction target was a volumetric weight of 250 kg/m3. It was determined that straw and hemp react similarly to compaction. This project has demonstrated that the transport rig system has the best potential for large-scale use as compared with the alternate systems used. According to our calculations, the transport rig was the most cost-effective system measured in kronor per energy content. In addition, this system is also flexible. From an environmental standpoint, however, the energy balance showed that the container system was slightly superior

  2. The Fiber Content in Fibrous Hemp Depending on Selected Agrotechnical Factors

    Kryszak N.

    2016-06-01

    Full Text Available Relationship between genotypes represented by two fibrous hemp varieties and some agrotechnical factors was investigated in the study. The aim of it was finding how selected factors (three sowing dates, two sowing densities and five harvest dates influence on total fiber content using osmotic degumming of fibrous plants method for fiber content determination.

  3. Fatty acid composition of hemp seed oils from different locations in Turkey

    Kiralan, M.; Gul, V.; Metin Kara, S.

    2010-07-01

    Recent interest in hemp seed as a source of food has largely focused on its oil content and fatty acid profile. The oil content and fatty acid composition (15 fatty acids) of twenty one different hemp seed samples of domestic origin from north-western Turkey were monitored. The samples were obtained from seed wholesalers and local spice shops and are of unknown genetic origin. The oil content of the hemp seeds ranged between 29.6 to 36.5%. Out of the 15 detected fatty acids, the omega-6 linoleic acid (18:2n-6) was predominant and fluctuated from 55.4 to 56.9%, while the omega-3 a-linolenic (18:3n-3) acid ranged from 16.5 to 20.4% and the omega-9 oleic acid (18:1n-9) ranged from 11.4 to 15.9%. Of the minor fatty acids, the highest concentrations were found for {gamma}-linolenic acid (18:3n-6), range 0.6-1.1%, followed by stearidonic acid (18:4n-3), range 0.3-0.5%. These results show that hemp seed grown in north-western Turkey provides a well balanced and rich source of dietary omega-6 and -3 essential fatty acids and appears to be a potentially valuable source of food. (Author) 31 refs.

  4. Investigation of mechanical properties of hemp/glass fiber reinforced nano clay hybrid composites

    Unki, Hanamantappa Ningappa; Shivanand, H. K.; Vidyasagar, H. N.

    2018-04-01

    Over the last twenty to thirty years composite materials have been used in engineering field. Composite materials possess high strength, high strength to weight ratio due to these facts composite materials are becoming popular among researchers and scientists. The major proportion of engineering materials consists of composite materials. Composite materials are used in vast applications ranging from day-to-day household articles to highly sophisticated applications. In this paper an attempt is made to prepare three different composite materials using e-glass and Hemp. In this present investigation hybrid composite of Hemp, Glass fiber and Nano clay will be prepared by Hand-layup technique. The glass fiber used in this present investigation is E-glass fiber bi-directional: 90˚ orientation. The composite samples will be made in the form of a Laminates. The wt% of nanoclay added in the preparation of sample is 20 gm constant. The fabricated composite Laminate will be cut into corresponding profiles as per ASTM standards for Mechanical Testing. The effect of addition of Nano clay and variation of Hemp/glass fibers will be studied. In the present work, a new Hybrid composite is developed in which Hemp, E glass fibers is reinforced with epoxy resin and with Nano clay.

  5. Combined HPLC analysis of organic acids and furans formed during organosolv pulping of fiber hemp

    Gosselink, R.J.A.; Dam, van J.E.G.; Zomers, F.H.A.

    1995-01-01

    During organosolv pulping of fiber hemp (Cannabis sativa L) with a mixture of ethanol/water, delignification is catalyzed by released acetic acid and formic acid in the effluent. The major sources of acetic acid are the acetyl groups, as determined by means of the acetyl balance, whereas formic acid

  6. Studying secondary growth and bast fiber development: the hemp hypocotyl peeks behind the wall

    Marc Behr

    2016-11-01

    Full Text Available Cannabis sativa L. is an annual herbaceous crop grown for the production of long extraxylary fibers, the bast fibers, rich in cellulose and used both in the textile and biocomposite sectors. Despite being herbaceous, hemp undergoes secondary growth and this is well exemplified by the hypocotyl. The hypocotyl was already shown to be a suitable model to study secondary growth in other herbaceous species, namely Arabidopsis thaliana and it shows an important practical advantage, i.e. elongation and radial thickening are temporally separated. This study focuses on the mechanisms marking the transition from primary to secondary growth in the hemp hypocotyl by analysing the suite of events accompanying vascular tissue and bast fiber development. Transcriptomics, imaging and quantification of phytohormones were carried out on four representative developmental stages (i.e. 6-9-15-20 days after sowing to provide a comprehensive overview of the events associated with primary and secondary growth in hemp. This multidisciplinary approach provides cell wall-related snapshots of the growing hemp hypocotyl and identifies marker genes associated with the young (expansins, β-galactosidases and transcription factors involved in light-related processes and the older hypocotyl (secondary cell wall biosynthetic genes and transcription factors.

  7. Report of a Working Group on Fibre Crops (Flax and Hemp)

    Bas, N.; Pavelek, M.; Maggioni, L.; Lipman, E.

    2007-01-01

    Members of the newly established ECPGR Working Group on Fibre Crops (Flax and Hemp), in the framework of Sugar, Starch and Fibre Crops Network, met for the first time at Wageningen, the Netherlands on 14–16 June 2006. Fifteen participants from the Czech Republic, Germany, Hungary, Italy, Latvia,

  8. Quantification of dislocations in hemp fibers using acid hydrolysis and fiber segment length distributions

    Thygesen, Lisbeth Garbrecht

    2008-01-01

    Natural fibers such as flax or hemp may be used in composite materials. However, their use for this purpose is hampered by the large natural variation in tensile strength and other quality parameters. The first step in managing these variations is to develop methods for fast and reliable determin......Natural fibers such as flax or hemp may be used in composite materials. However, their use for this purpose is hampered by the large natural variation in tensile strength and other quality parameters. The first step in managing these variations is to develop methods for fast and reliable...... determination of relevant parameters. One quality parameter of the fibers is the amount of structural distortions known as dislocations or kink bands. Here, a method developed for the quantification of dislocations in pulp fibers was adapted and tested successfully for hemp yarn segments. The method is based...... was correct, and furthermore results showed that fibers broke more often in large dislocations than in small ones. However, it was also found that the hemp fiber segments did not break in all dislocations, and strict standardization of the procedure for acid hydrolysis is therefore necessary if results from...

  9. Hemp yarn reinforced composites – III. Moisture content and dimensional changes

    Madsen, Bo; Hoffmeyer, Preben; Lilholt, Hans

    2012-01-01

    Based on a comprehensive set of experimental data it is demonstrated that the moisture properties of aligned hemp fibre yarn/thermoplastic matrix composites are showing low moisture sorption capacity and low dimensional changes. Using a reference humidity of 65% RH, and a common span of ambient...

  10. Sunn Hemp Biomass and Nitrogen Production for Different Planting Dates and Seeding Rates

    Elevated nitrogen (N) fertilizer costs have renewed interest in alternative N sources, such as legumes. Sunn hemp (Crotalaria juncea L.) is a tropical legume capable of producing considerable biomass in a short period of time. A randomized complete block design with a split-plot restriction and fou...

  11. Hygienic quality of stem fractions of mechanically processed fibre hemp and linseed

    H-R. KYMÄLÄINEN

    2008-12-01

    Full Text Available Bast fibre is the most important fraction of bast fibre plants for technical products, i.e. thermal insulations and packaging materials. The hygienic quality of the various fractions of bast fibre plants is of interest in thermal insulations, because it may affect the quality of indoor air. Packaging materials may be associated e.g. with foodstuffs, which highlights the importance of hygienic quality. The aim of this study was to screen the hygienic quality, determined as microbial content, of mechanically fractionated fibre hemp and linseed plants harvested in the autumn before frost, after early frost and in spring. In addition, the possible correlation between microbes and ash was investigated. Two plant species, fibre hemp and linseed were studied. The plants were cultivated in Siuntio in southern Finland during the years 2002 and 2003, harvested in autumn or in spring and mechanically fractionated. The microbial contents of the fractions were examined by measuring the total number of microbes using Hygicult® growing slides. The microbial content of fractions of fibre hemp and linseed varied between 103 and 109 cfu/gdw. The fibre of hemp harvested after early frost or in spring had the lowest amount of moulds, but during winter and spring the amounts of bacteria and yeasts increased in hemp. Mechanically separated fibre and shive contained less microbes than the stalk. Ash contents of all examined samples of stems and stem fractions varied between 1% and 14%. The fibre after fractionating had a lower ash content (2.3–3.3% than that of stems (4.4–6.9% harvested in the autumn. The ash content of stem and shive decreased to 1.6% during winter, the ash content of fibre being even somewhat lower (0.9%. No correlation was observed between the contents of microbes and ash.;

  12. Effect of harvest time and field retting duration on the chemical composition, morphology and mechanical properties of hemp fibers

    Liu, Ming; Fernando, Dinesh; Daniel, Geoffrey

    2015-01-01

    tThe large variability in the mechanical properties of hemp fibers is an issue in relation to their use inhigh-grade composites. The objective of the present study was to determine the optimal growth stage forharvesting hemp fibers for use in composites and to evaluate the effect of field retting......% at seed maturity.A highly significant reduction in cellulose deposition in fiber cell walls was reflected by reduced fiberwall thickness with plant maturity and was related to the development and ripening of hemp seeds.A statistically significant increase in lignin deposition and a slight decrease...... in pectins in hemp fibercell walls were also noted with stem maturity. Microscopy observations and histochemical analyzescorroborated the results from the chemical analyzes and revealed variations in morphological aspectsand spatial micro-distributions of carbohydrates and lignin within the cell structure...

  13. Nuclear localization signal of ING4 plays a key role in its binding to p53

    Zhang Xin; Wang Kesheng; Wang Zhiqin; Xu Lusheng; Wang Qingwan; Chen Fei; Wei Dongzhi; Han Zeguang

    2005-01-01

    ING4, a novel member of ING family, is recently reported to interact with tumor suppressor p53 and negatively regulate the cell growth with significant G2/M arrest of cell cycle in HepG2 cells through upregulation of p53-inducible gene p21. However, which region of ING4 could have contributed to the binding to p53 remains largely unclear. Herein, the GST-pulldown experiments revealed that the middle region of ING4, a potential bipartite nuclear localization signal (NLS), could be involved in the binding to p53. Furthermore, the interaction of ING4 to p53 was abrogated in vitro and in vivo when certain mutations or the entire deletion of the NLS domain occurred. More interestingly, the mutations of the NLS domain could alter the ING4 nuclear localization, disrupt the interaction of ING4 with p53, and even, deregulate the p53-inducible gene p21 in MCF-7 cells. All data indicated that the NLS domain of ING4 is essential for the binding of ING4 to p53 and the function of ING4 associated with p53

  14. Hemp raw materials: The effect of cultivar, growth conditions and pretreatment on the chemical composition of the fibres

    Thomsen, A.B.; Rasmussen, S.K.; Bohn, V.

    2005-01-01

    Hemp raw materials were analyzed chemically to determine their content of cellulose, hemicellulose, lignin and ashes. Correction for ashes was only necessary in the first step of the chemical analysis: the Neutral Detergent Fibre step. The hemp fiberscontained 73-77% w/w cellulose, 7-9% w....../w hemicellulose and 4-6% w/w lignin, while the hemp shives contained 48% w/w cellulose, 21-25% w/w hemicellulose and 17-19% w/w lignin. Among the four investigated cultivars, Felina contained least lignin, whileFutura and Fasamo contained least cellulose. Hemp yarn had the same color as retted hemp fibers...... but was more cellulose rich. Steam explosion, wet oxidation and hydrothermal treatment were used for defibration of retted hemp fibers. These pretreatmentsremoved lignin and hemicellulose resulting in loss of dry matter of 15-73% w/w and in loss of cellulose of 0-69% w/w. Steam explosion treatment generally...

  15. Radioprotection et ingénierie nucléaire

    2006-01-01

    Le développement de l'énergie nucléaire repose sur deux piliers essentiels : la sûreté nucléaire, qui concerne la machine, et la radioprotection, qui se préoccupe des hommes. Construit de manière fiable, un réacteur nucléaire se doit d'irradier le moins possible ses opérateurs et conduire à un impact très faible pour les populations avoisinantes. Tout cela est soumis à des règles strictes, élaborées au niveau international, et qui ne tolèrent aucun écart. Les ingénieurs qui ont à concevoir, construire et conduire ces machines doivent maîtriser les règles de protection : cet ouvrage leur est destiné. La radioprotection, si elle se fonde principalement sur des bases scientifiques, intègre également une dimension sociétale exigeante. Ces activités sont en effet sous le regard critique et permanent de nos concitoyens, qui exigent des acteurs de cette industrie une maîtrise totale de la radioprotection ; un ingénieur qui ne connaîtrait pas la genèse de la radioprotection, ses règle...

  16. ING3 promotes prostate cancer growth by activating the androgen receptor.

    Nabbi, Arash; McClurg, Urszula L; Thalappilly, Subhash; Almami, Amal; Mobahat, Mahsa; Bismar, Tarek A; Binda, Olivier; Riabowol, Karl T

    2017-05-16

    The androgen receptor (AR) is a major driver of prostate cancer, and increased AR levels and co-activators of the receptor promote the development of prostate cancer. INhibitor of Growth (ING) proteins target lysine acetyltransferase or lysine deacetylase complexes to the histone H3K4Me3 mark of active transcription, to affect chromatin structure and gene expression. ING3 is a stoichiometric member of the TIP60 lysine acetyltransferase complex implicated in prostate cancer development. Biopsies of 265 patients with prostate cancer were stained for ING3, pan-cytokeratin, and DNA. LNCaP and C4-2 androgen-responsive cells were used for in vitro assays including immunoprecipitation, western blotting, Luciferase reporter assay and quantitative polymerase chain reaction. Cell viability and migration assays were performed in prostate cancer cell lines using scrambled siRNA or siRNA targeting ING3. We find that ING3 levels and AR activity positively correlate in prostate cancer. ING3 potentiates androgen effects, increasing expression of androgen-regulated genes and androgen response element-driven reporters to promote growth and anchorage-independent growth. Conversely, ING3 knockdown inhibits prostate cancer cell growth and invasion. ING3 activates the AR by serving as a scaffold to increase interaction between TIP60 and the AR in the cytoplasm, enhancing receptor acetylation and translocation to the nucleus. Activation is independent of ING3's ability to target the TIP60 complex to H3K4Me3, identifying a previously unknown chromatin-independent cytoplasmic activity for ING3. In agreement with in vitro observations, analysis of The Cancer Genome Atlas (TCGA) data (n = 498) and a prostate cancer tissue microarray (n = 256) show that ING3 levels are higher in aggressive prostate cancers, with high levels of ING3 predicting shorter patient survival in a low AR subgroup. Including ING3 levels with currently used indicators such as the Gleason score provides more

  17. Modulators of inhibitor of growth (ING) family expression in development and disease.

    Maher, Stacey K; Helbing, Caren C

    2009-05-01

    The inhibitor of growth (ING) gene family proteins regulate many critical cellular processes such as cell proliferation and growth, apoptosis, DNA repair, senescence, angiogenesis, and drug resistance. Their transcripts and proteins are differentially expressed in health and disease and there is evidence for developmental regulation. The vast majority of studies have characterized ING levels in the context of cancer. However, relatively little attention has been paid to the expression of ING family members in other contexts. This review summarizes the findings from human and animal model systems that provide insight into the factors influencing the expression of these important proteins. We examine the influence of cell cycle and aging as well as genotoxic stress on ING expression levels and evaluate several emerging areas of inquiry demonstrating that ING gene activity may be modulated by factors such as the p53 tumor suppressor, DNA methylation, and ING proteins themselves with external factors such as hormones, reactive oxygen species, TGFbeta signalling, and other proteins of pathological significance also influencing ING levels. We then briefly discuss the influence of post-translational modification and changes in subcellular localization as it pertains to modulation of ING expression. Understanding how ING expression is modulated represents a vital aspect of effective drug targeting strategies.

  18. Preface: phys. stat. sol. (a) 202/12

    Neumann, Wolfgang; Stutzmann, Martin; Hildebrandt, Stefan

    2005-09-01

    The present special issue contains a collection of Original Papers dedicated to Professor Johannes Heydenreich on the occasion of his 75th birthday.Johannes Heydenreich, born on 20 June 1930 in Plauen/Vogtland near Dresden, studied physics at the Pädagogische Hochschule Potsdam, where he obtained his first academic degree Dipl. Phys. in 1958. He received his doctoral degree at the Martin Luther University in Halle in 1961 and the Habilitation degree in 1969. Already during his studies in Potsdam, he showed an interest in electron microscopy due to the influence of his teacher and supervisor Prof. Picht, one of the pioneers in electron optics. His interests were strengthened when Johannes Heydenreich did the experimental work for his Diploma degree at the Institute for Experimental Physics of the University of Halle, where he met Prof. Heinz Bethge for the first time. This was the beginning of a fruitful and longstanding collaboration. In 1962 Johannes Heydenreich joined the team of the later Institute for Solid State Physics and Electron Microscopy of the Academy of Sciences of the GDR, in Halle, for which the basis was laid by Prof. Bethge in 1960.Heydenreich has been working as Assistant Director for many years and played a decisive role in introducing and organising the various techniques of electron microscopy in the institute.The research activities of Prof. Heydenreich covered a broad spectrum over the years. At the beginning of his career he made significant contributions in the field of electron mirror microscopy. After that, his main interests were focused on transmission electron microscopy, ranging from diffraction contrast analysis of crystal defects to high-resolution electron microscopy and image processing. His favourite field was studies of defect-induced phenomena in advanced materials. The so-called Bethge-Heydenreich, the book Electron Microscopy in Solid State Physics, published at first in a German edition in 1982 and later in a revised

  19. Improving enzymatic hydrolysis of industrial hemp (Cannabis sativa L.) by electron beam irradiation

    Shin, Soo-Jeong [Chungbuk National University, Cheongju, Chungbuk 361-763 (Korea, Republic of); Sung, Yong Joo [KT and G Central Research Institute, 302 Shinseong-Dong, Yuseong-Gu, Daejeon 305-805 (Korea, Republic of)], E-mail: yosung17@yahoo.co.kr

    2008-09-15

    The electron beam irradiation was applied as a pretreatment of the enzymatic hydrolysis of hemp biomass with doses of 150, 300 and 450 kGy. The higher irradiation dose resulted in the more extraction with hot-water extraction or 1% sodium hydroxide solution extraction. The higher solubility of the treated sample was originated from the chains scission during irradiation, which was indirectly demonstrated by the increase of carbonyl groups as shown in diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) spectra. The changes in the micro-structure of hemp resulted in the better response to enzymatic hydrolysis with commercial cellulases (Celluclast 1.5L and Novozym 342). The improvement in enzymatic hydrolysis by the irradiation was more evident in the hydrolysis of the xylan than in that of the cellulose.

  20. Improving enzymatic hydrolysis of industrial hemp (Cannabis sativa L.) by electron beam irradiation

    Shin, Soo-Jeong; Sung, Yong Joo

    2008-01-01

    The electron beam irradiation was applied as a pretreatment of the enzymatic hydrolysis of hemp biomass with doses of 150, 300 and 450 kGy. The higher irradiation dose resulted in the more extraction with hot-water extraction or 1% sodium hydroxide solution extraction. The higher solubility of the treated sample was originated from the chains scission during irradiation, which was indirectly demonstrated by the increase of carbonyl groups as shown in diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) spectra. The changes in the micro-structure of hemp resulted in the better response to enzymatic hydrolysis with commercial cellulases (Celluclast 1.5L and Novozym 342). The improvement in enzymatic hydrolysis by the irradiation was more evident in the hydrolysis of the xylan than in that of the cellulose

  1. Improving enzymatic hydrolysis of industrial hemp ( Cannabis sativa L.) by electron beam irradiation

    Shin, Soo-Jeong; Sung, Yong Joo

    2008-09-01

    The electron beam irradiation was applied as a pretreatment of the enzymatic hydrolysis of hemp biomass with doses of 150, 300 and 450 kGy. The higher irradiation dose resulted in the more extraction with hot-water extraction or 1% sodium hydroxide solution extraction. The higher solubility of the treated sample was originated from the chains scission during irradiation, which was indirectly demonstrated by the increase of carbonyl groups as shown in diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) spectra. The changes in the micro-structure of hemp resulted in the better response to enzymatic hydrolysis with commercial cellulases (Celluclast 1.5L and Novozym 342). The improvement in enzymatic hydrolysis by the irradiation was more evident in the hydrolysis of the xylan than in that of the cellulose.

  2. Mechanical Properties and Weathering Behavior of Polypropylene-Hemp Shives Composites

    Marcel Ionel Popa

    2013-01-01

    Full Text Available This paper presents the obtaining and the characterization of composites with polypropylene matrix and hemp shives as filler in different ratios and containing poly(propylene-co maleic anhydride (MAH-PP 3% wt as compatibility agent. The weathering behavior of the composite enclosing 60% hemp shives, performed after the exposure to UV radiations at different exposure times, was evaluated. The changes in the chemical and morphological structures were investigated by FT-IR and RAMAN spectroscopies and AFM microscopy. The mechanical characteristics of the composites were determined before and after an artificial aging process, and they are within the limits of the values reported for polyolefin-based composites and materials with natural fillers. During the accelerated weathering process, the correlation between the chemical degradation of the main components of the composite and the modification of the mechanical properties after the process of aging has been observed.

  3. Development of Highly Repellent Silica Particles for Protection of Hemp Shiv Used as Insulation Materials.

    Bourebrab, Marion A; Durand, Géraldine G; Taylor, Alan

    2017-12-21

    New bio-materials have recently gained interest for use in insulation panels in walls, but wider adoption by the building industry is hindered by their intrinsic properties. The fact that such materials are mainly composed of cellulose makes them combustible, and their hydrophilic surface presents a high water uptake, which would lead to faster biodegradation. A hydrophobic treatment with silica particles was successfully synthesised via Stöber process, characterised, and deposited on hemp shiv. The surface of hemp shiv coated several times with 45 and 120 nm particles were uniformly covered, as well as extensively water repellent. Those samples could withstand in humidity chamber without loss of their hydrophobic property and no sign of mould growth after 72 h of exposure.

  4. Effect of introducing hemp oil into feed on the nutritional quality of pig meat

    Mourot Jacques

    2015-11-01

    Full Text Available Research is being carried out to diversify the sources of n-3 fatty acid-rich lipids for animal feed. In this study, 3 batches of 12 pigs with between 50 and 105 kg of live weight, received isolipidic diets containing either palm oil (PO, or rapeseed oil (CO, or hemp oil (HO (providing respectively 0.6; 1.9 and 3.4 g of C18:3 n-3 (ALA /kg of feed. The quantity of ALA deposited in the meat is higher (p< 0.001 in the HO pigs. Hemp oil may be an interesting source of ALA to improve the nutritional quality of pork.

  5. Enrichment of Cellulosic Waste Hemp (Cannabis sativa Hurd into Non-Toxic Microfibres

    Reinu E. Abraham

    2016-07-01

    Full Text Available In this study a largely available lignocellulose feedstock hemp (Cannabis sativa, obtained as an industrial waste, was used for cellulose extraction. The extraction of cellulose microfibres from hemp biomass was conducted by alkaline treatment and an acidification process. The extracted cellulose microfibres were characterised using Fourier-transformed infrared spectroscopy (FTIR, Scanning electron microscopy (SEM, thermogravimetric analysis (TGA and X-ray diffraction (XRD. The viability of the study was determined by growing human fibroblasts on the preparation which resulted in being non-toxic; indicating its potential in preparing biological scaffolds. Upon enzymatic hydrolysis of the cellulose microfibre using cellulase from Trichoderma reesei, a maximum of 909 mg/g of reducing sugars were obtained, which endorses its suitability for biofuel production.

  6. Development of Highly Repellent Silica Particles for Protection of Hemp Shiv Used as Insulation Materials

    Marion A. Bourebrab

    2017-12-01

    Full Text Available New bio-materials have recently gained interest for use in insulation panels in walls, but wider adoption by the building industry is hindered by their intrinsic properties. The fact that such materials are mainly composed of cellulose makes them combustible, and their hydrophilic surface presents a high water uptake, which would lead to faster biodegradation. A hydrophobic treatment with silica particles was successfully synthesised via Stöber process, characterised, and deposited on hemp shiv. The surface of hemp shiv coated several times with 45 and 120 nm particles were uniformly covered, as well as extensively water repellent. Those samples could withstand in humidity chamber without loss of their hydrophobic property and no sign of mould growth after 72 h of exposure.

  7. Performance and Qualification of the Power Supply and Control Unit for the HEMP Thruster

    Brag, R.; Herty, F.

    2014-08-01

    In 2013, Astrium GmbH delivered several flight model electronics for Electric Propulsion (EP) systems or corresponding components. One of the elements is a Power Supply and Control Unit (PSCU) for the Thales development "High Efficiency Multistage Plasma Thruster" (HEMP-T) (see Figure 1). This paper presents the PSCU specification and results of the qualification and acceptance phase of the EQM and the PFM.

  8. Durability of Starch Based Biodegradable Plastics Reinforced with Manila Hemp Fibers

    Shinji Ochi

    2011-01-01

    The biodegradability of Manila hemp fiber reinforced biodegradable plastics was studied for 240 days in a natural soil and 30 days in a compost soil. After biodegradability tests, weights were measured and both tensile strength tests and microscopic observation were performed to evaluate the biodegradation behavior of the composites. The results indicate that the tensile strength of the composites displays a sharp decrease for up to five days, followed by a gradual decrease. The weight loss a...

  9. Silica Treatments: A Fire Retardant Strategy for Hemp Fabric/Epoxy Composites

    Branda, Francesco; Malucelli, Giulio; Durante, Massimo; Piccolo, Alessandro; Mazzei, Pierluigi; Costantini, Aniello; Silvestri, Brigida; Pennetta, Miriam; Bifulco, Aurelio

    2016-01-01

    In this paper, for the first time, inexpensive waterglass solutions are exploited as a new, simple and ecofriendly chemical approach for promoting the formation of a silica-based coating on hemp fabrics, able to act as a thermal shield and to protect the latter from heat sources. Fourier Transform Infrared (FTIR) and solid-state Nuclear Magnetic Resonance (NMR) analysis confirm the formation of –C–O–Si– covalent bonds between the coating and the cellulosic substrate. The proposed waterglass t...

  10. EFFECTS INDUCED BY DIETHYL SULPHATE ON SOME CYTOGENETICAL PARAMETERS AND LENGTH GROWTH OF HEMP PLANTLETS

    Elena Truta

    2007-08-01

    Full Text Available The hemp seeds were treated with diethyl sulphate, in four concentrations (0.1%, 0.25%, 0.5%, and 1% and in two variants of alkylant exposure (3 and 6 hours. The length growth of plantlets, mitotic index and frequency of chromosomal aberrations were the analyzed parameters. Significant modifications were obtained at the level of parameters in variants treated with DES, comparatively with control.

  11. Forum-ing: Signature practice for public theological discourse

    Edward P. Wimberly

    2014-05-01

    Full Text Available This article introduces a unique model for public theological conversation and discourse, which was developed by the Concerned Black Clergy of Atlanta (CBC. It was a model developed in response to the problems of poverty, homelessness, and the ‘missing and murdered children’ victimised in Atlanta, Georgia in the United States of America in the early 1980s. It was originally organised to respond to the economic, financial, spiritual, emotional, employment, housing and resource needs of the underserved poor. This unique practice is called forum-ing. The forum meets every Monday morning, except when there is a national holiday. It has operated 30 consecutive years. The forum has a series of presentations, including the opening prayer, self-introductions of each person, a report of the executive director, special presentations from selected community groups, reports, and then questions and answers. The end result is that those attending engage in a process of discourse that enables them to internalise new ideas, approaches, and activities for addressing poverty and injustice in the community. Key to forum-ing for the 21st century is that it is a form of public practical theology rooted and grounded in non-violence growing out of the civil rights movement of the 1950s and 1960s in the United States. The overall purpose of this article is to contribute to the effort of the Faculty of Theology at the University of Pretoria (South Africa to identify those variables that will assist religious leaders in South Africa to develop public conversational spaces to enhance democratic participation. This article presents one model from the African American community in Atlanta, Georgia. The hope is to lift up key variables that might assist in the practical and pastoral theological conversation taking place in South Africa at present.

  12. Anaerobic digestion of industrial hemp-effect of harvest time on methane energy yield per hectare

    Kreuger, E; Escobar, F; Bjoernsson, L [Department of Biotechnology, Lund University, P.O. Box 124, SE-221 00 Lund (Sweden); Prade, T; Svensson, S -E; Englund, J -E [Department of Agriculture-Farming Systems, Technology and Product Quality, Swedish University of Agricultural Sciences, P.O. Box 104, SE-230 53 Alnarp (Sweden)

    2011-02-15

    There is a worldwide emphasis to increase the share of renewable transportation fuels. When using agricultural land for production of renewable transportation fuels, the energy output per hectare for different crops and transportation fuels is a crucial factor. In this study, the gross methane energy yield per hectare from anaerobic digestion of industrial hemp (Cannabis sativa L.), was determined at four different harvest times between July and October in Southern Sweden, a cold climate region. The biomass yield was determined for three years and the methane yield was determined for two years through the biochemical methane potential test. The highest biomass yield, 16 tonnes dry matter per hectare on an average, and the highest methane energy yield per hectare was achieved when the hemp was harvested in September or October, with an average gross methane energy yield of 136 {+-} 24 GJ per hectare. There was no significant difference in the specific methane yield between the harvest times; the average being 234 {+-} 35 m{sup 3} per tonne volatile solids. Biogas from hemp turned out to be a high yielding alternative to the currently dominating renewable transportation fuels produced from crops grown in Sweden: ethanol from wheat and biodiesel from rapeseed. (author)

  13. Effect of unconventional oilseeds (safflower, poppy, hemp, camelina) on in vitro ruminal methane production and fermentation.

    Wang, Shaopu; Kreuzer, Michael; Braun, Ueli; Schwarm, Angela

    2017-08-01

    Dietary supplementation with oilseeds can reduce methane emission in ruminants, but only a few common seeds have been tested so far. This study tested safflower (Carthamus tinctorius), poppy (Papaver somniferum), hemp (Cannabis sativa), and camelina (Camelina sativa) seeds in vitro using coconut (Cocos nucifera) oil and linseed (Linum usitatissimum) as positive controls. All the tested oilseeds suppressed methane yield (mL g -1 dry matter, up to 21%) compared to the non-supplemented control when provided at 70 g oil kg -1 dry matter, and they were as effective as coconut oil. Safflower and hemp were more effective than linseed (21% and 18% vs. 10%), whereas the effects of poppy and camelina were similar to linseed. When methane was related to digestible organic matter, only hemp and safflower seeds and coconut oil were effective compared to the non-supplemented control (up to 11%). The level of methanogenesis and the ratios of either the n-6:n-3 fatty acids or C 18 :2 :C 18 :3 in the seed lipids were not related. Unconventional oilseeds widen the spectrum of oilseeds that can be used in dietary methane mitigation. In vivo confirmation of their methane mitigating effect is still needed, and their effects on animal performance still must be determined. © 2017 Society of Chemical Industry. © 2017 Society of Chemical Industry.

  14. Composite Materials Based on Hemp and Flax for Low-Energy Buildings

    Brzyski, Przemysław; Barnat-Hunek, Danuta; Suchorab, Zbigniew; Łagód, Grzegorz

    2017-01-01

    The article presents the results obtained in the course of a study on prospective application of flax/hemp wastes as a filling material of lime-based composites in the construction of low-energy buildings. The utilized filler comprised the hydrated lime with clay and Portland cement used as additives. The analysis involved evaluation of such properties as porosity, density, thermal conductivity, absorptivity, permeability, as well as compressive and flexural strength. Depending on the quantity of the filler, the properties of the composite changed. This, in turn, enabled to evaluate whether the utilized composite met the thermal requirements established for low-energy buildings. Afterwards, the obtained data were cross-referenced with the results gathered in the case of a room built of autoclaved aerated concrete. In order to prevent reaching the critical surface humidity, the internal surface temperature had to be calculated. Moreover, the chances of interstitial condensation occurring in the wall made of the analyzed lime–flax–hemp composite were determined as well. The study showed that the composite exhibits low strength, low density, low thermal conductivity, and high absorptivity. The external walls made of the lime–flax–hemp composite receive a limited exposure to condensation, but not significant enough to constitute any threat. The requirements established for low-energy buildings can be met by using the analyzed composite. PMID:28772871

  15. Analysis of cannabinoids in commercial hemp seed oil and decarboxylation kinetics studies of cannabidiolic acid (CBDA).

    Citti, Cinzia; Pacchetti, Barbara; Vandelli, Maria Angela; Forni, Flavio; Cannazza, Giuseppe

    2018-02-05

    Hemp seed oil from Cannabis sativa L. is a very rich natural source of important nutrients, not only polyunsaturated fatty acids and proteins, but also terpenes and cannabinoids, which contribute to the overall beneficial effects of the oil. Hence, it is important to have an analytical method for the determination of these components in commercial samples. At the same time, it is also important to assess the safety of the product in terms of amount of any psychoactive cannabinoid present therein. This work presents the development and validation of a highly sensitive, selective and rapid HPLC-UV method for the qualitative and quantitative determination of the main cannabinoids, namely cannabidiolic acid (CBDA), tetrahydrocannabinolic acid (THCA), cannabidiol (CBD), tetrahydrocannabinol (THC), cannabinol (CBN), cannabigerol (CBG) and cannabidivarin (CBDV), present in 13 commercial hemp seed oils. Moreover, since decomposition of cannabinoid acids generally occurs with light, air and heat, decarboxylation studies of the most abundant acid (CBDA) were carried out in both open and closed reactor and the kinetics parameters were evaluated at different temperatures in order to evaluate the stability of hemp seed oil in different storage conditions. Copyright © 2017 Elsevier B.V. All rights reserved.

  16. Experimental Study on the Hygrothermal Behavior of a Coated Sprayed Hemp Concrete Wall

    Anthony Magueresse

    2013-01-01

    Full Text Available Hemp concrete is a sustainable lightweight concrete that became popular in the field of building construction because of its thermal and environmental properties. However; available experimental data on its hygrothermal behavior are rather scarce in the literature. This paper describes the design of a large-scale experiment developed to investigate the hygrothermal behavior of hemp concrete cast around a timber frame through a spraying process; and then coated with lime-based plaster. The equipment is composed of two climatic chambers surrounding the tested wall. The experiment consists of maintaining the indoor climate at constant values and applying incremental steps of temperature; relative humidity or vapor pressure in the outdoor chamber. Temperature and relative humidity of the room air and on various depths inside the wall are continuously registered during the experiments and evaporation phenomena are observed. The influence of the plaster on the hygrothermal behavior of hemp concrete is investigated. Moreover; a comparison of experimental temperatures with numerical results obtained from a purely conductive thermal model is proposed. Comparing the model with the measured data gave satisfactory agreement.

  17. Integrated production of cellulosic bioethanol and succinic acid from industrial hemp in a biorefinery concept.

    Kuglarz, Mariusz; Alvarado-Morales, Merlin; Karakashev, Dimitar; Angelidaki, Irini

    2016-01-01

    The aim of this study was to develop integrated biofuel (cellulosic bioethanol) and biochemical (succinic acid) production from industrial hemp (Cannabis sativa L.) in a biorefinery concept. Two types of pretreatments were studied (dilute-acid and alkaline oxidative method). High cellulose recovery (>95%) as well as significant hemicelluloses solubilization (49-59%) after acid-based method and lignin solubilization (35-41%) after alkaline H2O2 method were registered. Alkaline pretreatment showed to be superior over the acid-based method with respect to the rate of enzymatic hydrolysis and ethanol productivity. With respect to succinic acid production, the highest productivity was obtained after liquid fraction fermentation originated from steam treatment with 1.5% of acid. The mass balance calculations clearly showed that 149kg of EtOH and 115kg of succinic acid can be obtained per 1ton of dry hemp. Results obtained in this study clearly document the potential of industrial hemp for a biorefinery. Copyright © 2015 Elsevier Ltd. All rights reserved.

  18. introduction à l'ingénierie documentaire et aux sciences de l'information

    Guyot, Brigitte

    2011-01-01

    polycopié introductif pour la formation chef de projet en ingénierie documentaire, Cnam; introductory course on documentary engineering: definition, applications, objects, process, actors of the market, historical elements; cours introductif à l'ingénierie documentaire : positionnement, objets, processus, acteurs du marché, repères historiques

  19. 76 FR 45303 - ING Asia Pacific High Dividend Equity Income Fund, et al.; Notice of Application

    2011-07-28

    ... Premium Opportunity Fund (``IGA''); ING Global Equity Dividend and Premium Opportunity Fund (``IGD''); ING... Exchange. PRT has also issued preferred shares. Each Current Fund reserves the right to issue preferred... market price and its net asset value per common share (``NAV'')) and the relationship between such Fund's...

  20. 77 FR 58375 - Inglis Hydropower, LLC; Notice of Preliminary Permit Application Accepted for Filing and...

    2012-09-20

    ... Hydropower, LLC; Notice of Preliminary Permit Application Accepted for Filing and Soliciting Comments, Motions To Intervene, and Competing Applications On May 18, 2012, Inglis Hydropower, LLC filed an... study the feasibility of a hydropower project located at the Inglis Bypass Channel, located on the...

  1. 75 FR 10230 - Inglis Hydropower, LLC; Notice of Application Accepted for Filing and Soliciting Motions To...

    2010-03-05

    ... Hydropower, LLC; Notice of Application Accepted for Filing and Soliciting Motions To Intervene and Protests... No.: P-12783-003. c. Date filed: July 22, 2009. d. Applicant: Inglis Hydropower, LLC. e. Name of Project: Inglis Hydropower Project. f. Location: The proposed project would be located at the existing...

  2. Influence of yarn folding on UV protection properties of hemp knitted fabrics

    Kocić Ana A.

    2016-01-01

    Full Text Available In the last years the media have highlighted the damage of the ozone layer and the resulting increase of ultraviolet radiation (UVR reaching the earth’s surface. Prolonged and repeated, both occupational and recreational, sun exposure of the population causes some detrimental effects. Clothing is considered to be one of the most important tools for UV protection. It is generally accepted that synthetic fibres provide a high UV protection capability of textiles, while cellulose fibres (cotton, linen, hemp, viscose have a low UV absorption capacity. However, natural pigments, pectin and waxes in natural cellulose fibers, and lignin in hemp fibers, act as UV absorbers having a favorable effect on UPF of grey-state fabrics. Bearing in mind the trend of reintroduction of hemp fibers as a source of eco-friendly textiles, there is a serious lack of study about the potential of hemp materials in terms of UV protection. Folded yarn is a complex yarn composed of two or more component yarns arranged parallel and twisted together to make a “new quality” yarn. Folding of yarns is an operation undertaken in order to modify single-yarn properties to an appreciable degree. There are very few investigations concerning the relationship between the yarn properties and UV protection effectiveness of the fabric made there from. In addition, there is no any result in the scientific literature about the influence of yarn folding on UV protection properties of textile materials. Having this in mind, for our research the idea was to evaluate the effect of yarn folding in this regard. The plain knitted fabrics composed of single or two-folded hemp yarn were compared in terms of UV protection properties. The Ultraviolet Protection Factor (UPF, as the quantitative measurement of the material effectiveness to protect the human skin against UVR, was determined for the textile materials by in vitro test method according to the European standard EN 13758. The knitted

  3. Molecular cytogenetic analysis of monoecious hemp (Cannabis sativa L.) cultivars reveals its karyotype variations and sex chromosomes constitution.

    Razumova, Olga V; Alexandrov, Oleg S; Divashuk, Mikhail G; Sukhorada, Tatiana I; Karlov, Gennady I

    2016-05-01

    Hemp (Cannabis sativa L., 2n = 20) is a dioecious plant. Sex expression is controlled by an X-to-autosome balance system consisting of the heteromorphic sex chromosomes XY for males and XX for females. Genetically monoecious hemp offers several agronomic advantages compared to the dioecious cultivars that are widely used in hemp cultivation. The male or female origin of monoecious maternal plants is unknown. Additionally, the sex chromosome composition of monoecious hemp forms remains unknown. In this study, we examine the sex chromosome makeup in monoecious hemp using a cytogenetic approach. Eight monoecious and two dioecious cultivars were used. The DNA of 210 monoecious plants was used for PCR analysis with the male-associated markers MADC2 and SCAR323. All monoecious plants showed female amplification patterns. Fluorescence in situ hybridization (FISH) with the subtelomeric CS-1 probe to chromosomes plates and karyotyping revealed a lack of Y chromosome and presence of XX sex chromosomes in monoecious cultivars with the chromosome number 2n = 20. There was a high level of intra- and intercultivar karyotype variation detected. The results of this study can be used for further analysis of the genetic basis of sex expression in plants.

  4. Hemp farming development and socioeconomic position of Bačka: Example of Odžaci

    Stojanović Vladimir

    2016-01-01

    Full Text Available Hemp is a very important agricultural crop for Bačka region. For centuries, hemp had been grown in this area and it had a crucial importance not only for the agriculture, but for the industry and trade of this region as well. From uncultivated, poorly inhabited and underdeveloped area in 18th century, Bačka made its way to a promising region in which agriculture and industry represent the backbone of the economic development. Significant number of colonial settlements from 18th century and colonization period during rule of Austro-Hungarian empress Maria Theresa recognized growing hemp as their main opportunities to prosper. Later on, in these settlements, the small manufactories for hemp processing were built which eventually had grown into larger factories for hemp fabric production. The town of Odžaci was one of these settlements. From a small colonial settlement, it became one of the important industrial centres in Bačka region.

  5. ING Genes Work as Tumor Suppressor Genes in the Carcinogenesis of Head and Neck Squamous Cell Carcinoma

    Xiaohan Li

    2011-01-01

    Full Text Available Head and neck squamous cell carcinoma (HNSCC is the sixth most common cancer in the world. The evolution and progression of HNSCC are considered to result from multiple stepwise alterations of cellular and molecular pathways in squamous epithelium. Recently, inhibitor of growth gene (ING family consisting of five genes, ING1 to ING5, was identified as a new tumor suppressor gene family that was implicated in the downregulation of cell cycle and chromatin remodeling. In contrast, it has been shown that ING1 and ING2 play an oncogenic role in some cancers, this situation being similar to TGF-β. In HNSCC, the ING family has been reported to be downregulated, and ING translocation from the nucleus to the cytoplasm may be a critical event for carcinogenesis. In this paper, we describe our recent results and briefly summarize current knowledge regarding the biologic functions of ING in HNSCC.

  6. Superconducting properties of In-Ge mixture films

    Gerber, A.; Deutscher, G.

    1987-01-01

    We report on measurements of the perpendicular H/sub c//sub perpendicular/ and parallel H/sub c//sub X/ upper critical fields of superconducting In-Ge mixture films in a wide range of In concentrations. The resistivities of the samples varied from about 10 μΩX, corresponding to high In concentration, up to about 1300 μΩ cm, corresponding to an In concentration close to the percolation threshold of the system. The critical temperatures of the samples in a zero external field have also been studied. For high metal concentrations the results have been analyzed and found to fit the predictions of the dirty limit for type-II superconductors. Near the threshold, however, where the normal-state resistivity goes to infinity, the critical fields saturate to a finite value. This result is in accordance with the prediction of percolation theory in the anomalous diffusion regime. As the threshold is approached the anisotropy ratio decreases to a constant value of 1.2 from its homogeneous type-II limit 1.69

  7. Effect of metal ions on the enzymatic hydrolysis of hemp seed oil by lipase Candida sp. 99-125.

    Lu, Jike; Wang, Pei; Ke, Zhaodi; Liu, Xin; Kang, Qiaozhen; Hao, Limin

    2018-07-15

    In order to study the effect of metal ions on the enzymatic hydrolysis of hemp seed oil by Candida sp. 99-125, the spectroscopy, stability and hydrolytic activity of the biocatalyst were investigated in presence of Ca 2+ , Mg 2+ , Fe 2+ , Fe 3+ , Cu 2+ , Sn 2+ , Pb 2+ , Zn 2+ and Ba 2+ metal ions, respectively. The UV spectroscopy showed that all the metal ions enhanced the absorbance but the decrease of fluorescence intensity was observed. All the metal ions could improve the lipase thermal stability except Cu 2+ and Ba 2+ . Hydrolysis of hemp seed oil proved that Ca 2+ , Fe 3+ , Pb 2+ and Ba 2+ could significantly improve the hydrolytic rate, and metal ions could influence lipase selectivity. The study revealed that metal ions could improve lipase stability, hydrolysis activity in the hydrolytic process of hemp seed oil by Candida sp. 99-125. Copyright © 2018 Elsevier B.V. All rights reserved.

  8. Effect of Vermicompost Extract and Vermicompost-Derived Humic Acids on Seed Germination and Seedling Growth of Hemp

    Ievinsh Gederts

    2017-08-01

    Full Text Available Hemp (Cannabis sativa L. cultivars grown for industrial use have recently emerged as a sustainable alternative source of industrial fibre and bioenergy, and is a highly valuable food and animal feed resource. The aim of the present study was to evaluate the effect of vermicompost extract, vermicompost mineral nutrient composition, and vermicompost-derived humic and fulvic acids on seed germination and growth of hemp seedlings. In general, separate application of all vermicompost components stimulated seed germination and hypocotyl and radicle growth, as well as increased chlorophyll concentration in cotyledons. Effective concentration range and the degree of stimulation varied significantly between the treatments. For practical purposes, application of vermicompost and vermicompost-derived extracts for stimulation of hemp growth could be useful at concentrations 5%, 0.05 mg·mL−1 and 1%, for vermicompost extract, humic acids and fulvic acids, respectively.

  9. Microwave-Assisted Extraction of Cannabinoids in Hemp Nut Using Response Surface Methodology: Optimization and Comparative Study

    Chih-Wei Chang

    2017-11-01

    Full Text Available 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 through single factor experiments and response surface methodology (RSM. A comparative study was also conducted to determine the differences in the extraction yields and morphology of hemp nut between MAE and reference extraction methods, namely heat reflux extraction (HRE, Soxhlet extraction (SE, supercritical fluid extraction (SFE, and ultrasound-assisted extraction (UAE. Among the independent variables in RSM, the temperature was the most significant parameter. The optimal conditions of MAE were as follows: extraction solvent of methanol, microwave power of 375 W, temperature of 109 °C, and extraction time of 30 min. Compared with reference extraction methods, MAE achieved the highest extraction yields of total cannabinoids in hemp nut (6.09 μg/g for MAE; 4.15 μg/g for HRE; 5.81 μg/g for SE; 3.61 μg/g for SFE; 3.73 μg/g for UAE with the least solvent consumption and shortest time. Morphological observations showed that substantial cell rupturing occurred in the microstructure of hemp nut after MAE, indicating enhanced dissolution of the target compounds during the extraction process. The MAE method is thus a rapid, economic, and environmentally friendly extraction method that is both effective and practical for industrial applications.

  10. Modelling of volumetric composition and mechanical properties of unidirectional hemp/epoxy composites - Effect of enzymatic fibre treatment

    Liu, Ming; Thygesen, Anders; Meyer, Anne S.

    2016-01-01

    The objective of the present study is to assess the effect of enzymatic fibre treatments on the fibre performance in unidirectional hemp/epoxy composites by modelling the volumetric composition and mechanical properties of the composites. It is shown that the applied models can well predict...... the changes in volumetric composition and mechanical properties of the composites when differently treated hemp fibres are used. The decrease in the fibre correlated porosity factor with the enzymatic fibre treatments shows that the removal of pectin by pectinolytic enzymes results in a better fibre...

  11. Laccase enzyme detoxifies hydrolysates and improves biogas production from hemp straw and miscanthus.

    Schroyen, Michel; Van Hulle, Stijn W H; Holemans, Sander; Vervaeren, Han; Raes, Katleen

    2017-11-01

    The impact of various phenolic compounds, vanillic acid, ferulic acid, p-coumaric acid and 4-hydroxybenzoic acid on anaerobic digestion of lignocellulosic biomass (hemp straw and miscanthus) was studied. Such phenolic compounds have been known to inhibit biogas production during anaerobic digestion. The different phenolic compounds were added in various concentrations: 0, 100, 500, 1000 and 2000mg/L. A difference in inhibition of biomethane production between the phenolic compounds was noted. Hydrolysis rate, during anaerobic digestion of miscanthus was inhibited up to 50% by vanillic acid, while vanillic acid had no influence on the initial rate of biogas production during the anaerobic digestion of hemp straw. Miscanthus has a higher lignin concentration (12-30g/100gDM) making it less accessible for degradation, and in combination with phenolic compounds released after harsh pretreatments, it can cause severe inhibition levels during the anaerobic digestion, lowering biogas production. To counter the inhibition, lignin degrading enzymes can be used to remove or degrade the inhibitory phenolic compounds. The interaction of laccase and versatile peroxidase individually with the different phenolic compounds was studied to have insight in the polymerization of inhibitory compounds or breakdown of lignocellulose. Hemp straw and miscanthus were incubated with 0, 100 and 500mg/L of the different phenolic compounds for 0, 6 and 24h and pretreated with the lignin degrading enzymes. A laccase pretreatment successfully detoxified the substrate, while versatile peroxidase however was inhibited by 100mg/L of each of the individual phenolic compounds. Finally a combination of enzymatic detoxification and subsequent biogas production showed that a decrease in phenolic compounds by laccase treatment can considerably lower the inhibition levels of the biogas production. Copyright © 2017 Elsevier Ltd. All rights reserved.

  12. Crystallographic characterization and molecular symmetry of edestin, a legumin from hemp.

    Patel, S; Cudney, R; McPherson, A

    1994-01-07

    Edestin, a legumin class reserve protein from hemp seeds having six identical subunits was crystallized from ammonium phosphate at pH 5 and subsequently characterized by X-ray diffraction. The crystals are of space group R32 with a = 127 A and gamma = 116 degrees having an equivalent triply centered hexagonal cell of a = b = 215 A, c = 80 A. There is one hexameric protein in the rhombohedral unit cell, hence the subunits of the Edestin molecule must be arranged with 32 point group symmetry.

  13. Effect of alkali treatment on the physical and surface properties of Indian hemp fibers

    Sangappa, Rao, B. Lakshmeesha; Asha, S.; Somashekar, R.

    2013-02-01

    The Plant fibers are rich in cellulose and they are a cheap, easily renewable source of fibers with the potential for polymer reinforcement. The presence of surface impurities and the large amount of hydroxyl groups make plant fibers less attractive for reinforcement of polymeric materials. Hemp (Cannabis Sativa L.) fibers were subjected to alkalization using 1N sodium hydroxide (NaOH). The structural properties and surface morphology of untreated and chemically modified fibers have been studied using X-ray diffraction (WAXS) and Scanning electron microscopy (SEM) respectively.

  14. Characterization of a thermoforming composite material made from hemp fibers and polypropylene

    Ciupan Emilia

    2017-01-01

    Full Text Available The paper refers to a composite material developed for manufacturing thermoformed products with applications in furniture making, automotive industry etc., a method and machinery for manufacturing the material in unwoven form. From this material, Research and Development Department of TAPARO SA has designed and built a series of furniture components. The composite material made of a thermoplastic fibrous component and hemp fibre component, the way of obtaining and the properties of the thermoformed material presented in the paper are necessary in the process of designing and optimizing the parts.

  15. The ING observatory in the 2015-2025 decade

    Balcells, M.

    2015-05-01

    The Isaac Newton Group, after nearly 30 years of productive operation of the William Herschel, Isaac Newton and Jacobus Kapteyn telescopes, is reviewing its science focus. The central goal is to respond to the changes in the astronomical landscapes in UK, the Netherlands, and especially in Spain, now a mature world-player community with access to 10-m class telescopes on La Palma and Paranal. The current model, which exploits scientific and instrumentation diversity, will continue to be offered until 2017. In the meantime, an ING-led consortium is building WEAVE, a next-generation spectroscopic facility for the WHT. WEAVE is a multi-fibre system capable of deploying either 1000 single-fibre probes, 25 mini-IFUs or a single large IFU, to feed a two-arm bench spectrograph which delivers resolving powers of either 5000 or 20,000. WEAVE will exploit a new field corrector at the WHT that enlarges the prime-focus FOV diameter from the current 40 arcmin to 2 degrees. WEAVE will be used to carry out massive surveys that exploit Gaia data in topics of Milky Way astronomy and stellar evolution; surveys that carry out galaxy evolution studies linked to various multi-wavelength surveys, including the LOFAR radio telescope; and redshift surveys of distant galaxies for cosmology. Community fibres will be available. The expectation is that these surveys will use 70% of the WHT time until at least 2022. The rest of the time will be available via normal TAC allocations, for use of facility instrumentation. Plans for the INT include involving external institutions in the provision of new instrumentation and/or telescope upgrades in exchange for significant fractions of telescope time.

  16. Comment on 'Nonlinear gyrokinetic theory with polarization drift' [Phys. Plasmas 17, 082304 (2010)

    Leerink, S.; Parra, F. I.; Heikkinen, J. A.

    2010-01-01

    In this comment, we show that by using the discrete particle distribution function the changes of the phase-space volume of gyrocenter coordinates due to the fluctuating ExB velocity do not explicitly appear in the Poisson equation and the [Sosenko et al., Phys. Scr. 64, 264 (2001)] result is recovered. It is demonstrated that there is no contradiction between the work presented by Sosenko et al. and the work presented by [Wang et al., Phys. Plasmas 17, 082304 (2010)].

  17. Pro-technological and functional characterization of lactic acid bacteria to be used as starters for hemp (Cannabis sativa L.) sourdough fermentation and wheat bread fortification.

    Nionelli, Luana; Montemurro, Marco; Pontonio, Erica; Verni, Michela; Gobbetti, Marco; Rizzello, Carlo Giuseppe

    2018-08-20

    Lactic acid bacteria were isolated from hemp (Cannabis sativa L.) flour, spontaneously fermented dough, and type I sourdough. Isolates were identified and further selected based on pro-technological, nutritional and functional properties. Lactobacillus plantarum/s5, Pediococcus acidilactici/s5, and Leuconostoc mesenteroides/s1 were used as mixed starter to produce hemp sourdough. Significant decreases of the concentration of phytic acid, condensed tannins, and total saponins were observed during fermentation. The in vitro protein digestibility increased up to 90%. Experimental wheat breads were made adding 5% to 15% (w/w) hemp sourdough to the formula, characterized, and compared to baker's yeast wheat bread manufactured without hemp sourdough. The use of hemp sourdough improved the textural features of wheat bread, without adversely affect the sensory profile. Proportionally to the fortification with hemp sourdough, protein digestibility of the breads increased, while the predicted glycemic index significantly decreased (87 vs 100%). This work demonstrated that the fermentation with selected starters improved nutritional functionality of hemp flour, allowing its large-scale use in different food applications, meeting the consumers and producers request for novel fermented baked goods with a well-balanced nutritional profile. Copyright © 2018 Elsevier B.V. All rights reserved.

  18. Inges Kindlustus kukkus kahjumisse. Kindlustushindade alandamata jätmine viis miinusesse / Kadrin Karner

    Karner, Kadrin

    2011-01-01

    Inges Kindlustuse kahjumi põhjustas kõrgema hinnataseme säilitamine ning juhatuse liikmele välja makstud märkimisväärne tasu. Konkurentide RSA Kindlustus, Ergo Kindlustuse AS ja IF Kindlustus majandustulemused

  19. Idiopathic nodular glomerulosclerosis (ING) in an African American (AA) man with hepatitis C.

    Onteddu, Nirmal K; Duggirala, Jayasri; Reddy, Anand C

    2018-05-18

    Idiopathic nodular glomerulosclerosis (ING) in a non-diabetic patient is uncommon. Nodular glomerulosclerosis is hallmark sign of diabetic nephropathy. ING is a very rare clinicopathological disease associated with smoking, obesity and hypertension, chronic obstructive pulmonary disease and metabolic syndrome. A 68-year-old non-obese African American man with hypertension, smoking and history of hepatitis C presented to the clinic with progressive worsening of lower extremity oedema and declining renal function over few months. Renal biopsy demonstrated nodular glomerulosclerosis. In this case, ING is hypothesised to be associated with hepatitis C along with smoking and hypertension (HTN). We present this case to speculate the existence of yet unknown aetiologies of ING. © BMJ Publishing Group Ltd (unless otherwise stated in the text of the article) 2018. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

  20. MCPA (4-Chloro-2-ethylphenoxyacetate) resistance in hemp-nettle (Galeopsis tetrahit L.).

    Weinberg, Tsafrir; Stephenson, Gerald R; McLean, Michael D; Hall, J Christopher

    2006-11-29

    The physiological basis for MCPA resistance in a hemp-nettle (Galeopsis tetrahit L.) biotype, obtained from a MCPA-resistant field population, was investigated. Dose-response studies revealed that the resistance factor for MCPA, based on GR50 comparisons of total dry weight of resistant (R) and susceptible (S) plants, was 3.3. Resistance factors for fluroxypyr, dicamba, 2,4-D, glyphosate, and chlorsulfuron were 8.2, 1.7, 1.6, 0.7, and 0.6, respectively. MCPA resistance was not due to differences in absorption, because both R and S biotypes absorbed 54% of applied [14C]MCPA 72 h after treatment. However, R plants exported less (45 vs 58% S) recovered 14C out of treated leaves to the apical meristem (6 vs 13% S) and root (32 vs 38% S). In both biotypes, approximately 20% of the 14C recovered in planta was detected as MCPA metabolites. However, less of the 14C recovered in the roots of R plants was MCPA. Therefore, two different mechanisms protect R hemp-nettle from MCPA phytotoxicity: a lower rate of MCPA translocation and a higher rate of MCPA metabolism in the roots. In support of these results, genetic studies indicated that the inheritance of MCPA resistance is governed by at least two nuclear genes with additive effects.

  1. Mechanical and dielectric characterization of hemp fibre reinforced polypropylene (HFRPP by dry impregnation process

    2010-03-01

    Full Text Available Natural fibres such as jute, coir, sisal, bamboo and pineapple are known to have high specific strength and can be effectively used in composites in various applications. The use of hemp fibres to reinforce the polymer aroused great interest and expectations amongst scientists and materials engineers. In this paper, composites with isotactic polypropylene (iPP matrix and hemp fibres were studied. These materials were manufactured via the patented FIBROLINE process based on the principle of the dry impregnation of a fibre assembly with a thermoplastic powder (iPP, using an alternating electric field. The aim of this paper is to show the influence of fibre/matrix interfaces on dielectric properties coupled with mechanical behaviours. Fibres or more probably the fibre/matrix interfaces allow the diffusion of electric charges and delocalise the polarisation energy. In this way, damages are limited during mechanical loading and the mechanical properties of the composites increase. The structure of composite samples was investigated by X-ray and FTIR analysis. The mechanical properties were analysed by quasistatic and dynamic tests. The dielectric investigations were carried out using the SEMME (Scanning Electron Microscope Mirror Effect method coupled with the measurement of the induced current (ICM.

  2. Effect of Fungal Deterioration on Physical and Mechanical Properties of Hemp and Flax Natural Fiber Composites

    Bryn Crawford

    2017-10-01

    Full Text Available The development and application of bio-sourced composites have been gaining wide attention, yet their deterioration due to the growth of ubiquitous microorganisms during storage/manufacturing/in-service phases is still not fully understood for optimum material selection and design purposes. In this study, samples of non-woven flax fibers, hemp fibers, and mats made of co-mingled randomly-oriented flax or hemp fiber (50% and polypropylene fiber (50% were subjected to 28 days of exposure to (i no water-no fungi, (ii water only and (iii water along with the Chaetomium globosum fungus. Biocomposite samples were measured for weight loss over time, to observe the rate of fungal growth and the respiration of cellulose components in the fibers. Tensile testing was conducted to measure mechanical properties of the composite samples under different configurations. Scanning electron microscopy was employed to visualize fungal hyphal growth on the natural fibers, as well as to observe the fracture planes and failure modes of the biocomposite samples. Results showed that fungal growth significantly affects the dry mass as well as the tensile elastic modulus of the tested natural fiber mats and composites, and the effect depends on both the type and the length scale of fibers, as well as the exposure condition and time.

  3. Hemp ( Cannabis sativa L.) seed oil: analytical and phytochemical characterization of the unsaponifiable fraction.

    Montserrat-de la Paz, S; Marín-Aguilar, F; García-Giménez, M D; Fernández-Arche, M A

    2014-02-05

    Non-drug varieties of Cannabis sativa L., collectively namely as "hemp", have been an interesting source of food, fiber, and medicine for thousands of years. The ever-increasing demand for vegetables oils has made it essential to characterize additional vegetable oil through innovative uses of its components. The lipid profile showed that linoleic (55%), α-linolenic (16%), and oleic (11%) were the most abundant fatty acids. A yield (1.84-1.92%) of unsaponifiable matter was obtained, and the most interesting compounds were β-sitosterol (1905.00 ± 59.27 mg/kg of oil), campesterol (505.69 ± 32.04 mg/kg of oil), phytol (167.59 ± 1.81 mg/kg of oil), cycloartenol (90.55 ± 3.44 mg/kg of oil), and γ-tocopherol (73.38 ± 2.86 mg/100 g of oil). This study is an interesting contribution for C. sativa L. consideration as a source of bioactive compounds contributing to novel research applications for hemp seed oil in the pharmaceutical, cosmetic food, and other non-food industries.

  4. A procedure for identifying textile bast fibres using microscopy: Flax, nettle/ramie, hemp and jute

    Bergfjord, Christian; Holst, Bodil

    2010-01-01

    Identifying and distinguishing between natural textile fibres is an important task in both archaeology and criminology. Wool, silk and cotton fibres can readily be distinguished from the textile bast fibres flax, nettle/ramie, hemp and jute. Distinguishing between the bast fibres is, however, not easily done and methods based on surface characteristics, chemical composition and cross section size and shape are not conclusive. A conclusive method based on X-ray microdiffraction exists, but as the method requires the use of a synchrotron it is not readily available. In this paper we present a simple procedure for identifying the above mentioned textile bast fibres. The procedure is based on measuring the fibrillar orientation with polarised light microscopy and detecting the presence of calcium oxalate crystals (CaC 2 O 4 ) in association with the fibres. To demonstrate the procedure, a series of fibre samples of flax, nettle, ramie, hemp and jute were investigated. The results are presented here. An advantage of the procedure is that only a small amount of fibre material is needed.

  5. A procedure for identifying textile bast fibres using microscopy: Flax, nettle/ramie, hemp and jute

    Bergfjord, Christian, E-mail: christian.bergfjord@uib.no [Institute for Physics and Technology, University of Bergen, Allegt. 55, 5007 Bergen (Norway); Holst, Bodil, E-mail: bodil.holst@uib.no [Institute for Physics and Technology, University of Bergen, Allegt. 55, 5007 Bergen (Norway)

    2010-08-15

    Identifying and distinguishing between natural textile fibres is an important task in both archaeology and criminology. Wool, silk and cotton fibres can readily be distinguished from the textile bast fibres flax, nettle/ramie, hemp and jute. Distinguishing between the bast fibres is, however, not easily done and methods based on surface characteristics, chemical composition and cross section size and shape are not conclusive. A conclusive method based on X-ray microdiffraction exists, but as the method requires the use of a synchrotron it is not readily available. In this paper we present a simple procedure for identifying the above mentioned textile bast fibres. The procedure is based on measuring the fibrillar orientation with polarised light microscopy and detecting the presence of calcium oxalate crystals (CaC{sub 2}O{sub 4}) in association with the fibres. To demonstrate the procedure, a series of fibre samples of flax, nettle, ramie, hemp and jute were investigated. The results are presented here. An advantage of the procedure is that only a small amount of fibre material is needed.

  6. Formulation, Characterization and Properties of Hemp Seed Oil and Its Emulsions

    Veronika Mikulcová

    2017-04-01

    Full Text Available The formulation, characterization, and anticipated antibacterial properties of hemp seed oil and its emulsions were investigated. The oil obtained from the seeds of Cannabis sativa L. in refined and unrefined form was characterized using iodine, saponification, acid values, and gas chromatography, and was employed for the preparation of stable oil-in-water emulsions. The emulsions were prepared using pairs of non-ionic surfactants (Tween, Span. The effects of the emulsification method (spontaneous emulsification vs. high-intensity stirring, hydrophilic lipophilic balance (HLB, type and concentration of surfactant, and oil type on the size and distribution of the emulsion particles were investigated. It was found that the ability to form stable emulsions with small, initial particle sizes is primarily dependent on the given method of preparation and the HLB value. The most efficient method of emulsification that afforded the best emulsions with the smallest particles (151 ± 1 nm comprised the high-energy method, and emulsions stable over the long-term were observed at HBL 9 with 10 wt % concentration of surfactants. Under high-intensity emulsification, refined and unrefined oils performed similarly. The oils as well as their emulsions were tested against the growth of selected bacteria using the disk diffusion and broth microdilution methods. The antibacterial effect of hemp seed oil was documented against Micrococcus luteus and Staphylococcus aureus subsp. aureus. The formulated emulsions did not exhibit the antibacterial activity that had been anticipated.

  7. A Novel Hemp Seed Meal Protein Hydrolysate Reduces Oxidative Stress Factors in Spontaneously Hypertensive Rats

    Abraham T. Girgih

    2014-12-01

    Full Text Available This report shows the antioxidant effects of a hemp seed meal protein hydrolysate (HMH in spontaneously hypertensive rats (SHR. Defatted hemp seed meal was hydrolyzed consecutively with pepsin and pancreatin to yield HMH, which was incorporated into rat feed as a source of antioxidant peptides. Young (8-week old SHRs were divided into three groups (8 rats/group and fed diets that contained 0.0%, 0.5% or 1.0% (w/w HMH for eight weeks; half of the rats were sacrificed for blood collection. After a 4-week washout period, the remaining 20-week old SHRs were fed for an additional four weeks and sacrificed for blood collection. Plasma total antioxidant capacity (TAC and superoxide dismutase (SOD, catalase (CAT and total peroxides (TPx levels were determined. Results showed that plasma TAC, CAT and SOD levels decreased in the older 20-week old SHRs when compared to the young SHRs. The presence of HMH in the diets led to significant (p < 0.05 increases in plasma SOD and CAT levels in both young and adult SHR groups; these increases were accompanied by decreases in TPx levels. The results suggest that HMH contained antioxidant peptides that reduced the rate of lipid peroxidation in SHRs with enhanced antioxidant enzyme levels and total antioxidant capacity.

  8. Evaluation of mechanical properties of hybrid fiber (hemp, jute, kevlar) reinforced composites

    Suresha, K. V.; Shivanand, H. K.; Amith, A.; Vidyasagar, H. N.

    2018-04-01

    In today's world composites play wide role in all the engineering fields. The reinforcement of composites decides the properties of the material. Natural fiber composites compared to synthetic fiber possesses poor mechanical properties. The solution for this problem is to use combination of natural fiber and synthetic fiber. Hybridization helps to improve the overall mechanical properties of the material. In this study, hybrid reinforced composites of Hemp fabric/Kevlar fabric/Epoxy and Jute fabric/ Kevlar fabric/Epoxy composites are fabricated using Simple hand layup technique followed by Vacuum bagging process. Appropriate test methods as per standards and guidelines are followed to analyze mechanical behavior of the composites. The mechanical characteristics like tensile, compression and flexural properties of the hybrid reinforced composites are tested as per the ASTM standards by series of tensile test; compression test and three point bending tests were conducted on the hybrid composites. A quantitative relationship between the Hemp fabric/Kevlar fabric/Epoxy and Jute/ Kevlar fabric/Epoxy has been established with constant thickness.

  9. Relationship to reducing sugar production and scanning electron microscope structure to pretreated hemp hurd biomass (Cannabis sativa)

    Abraham, Reinu E.; Barrow, Colin J.; Puri, Munish

    2013-11-15

    Lignocellulosic biomass is a highly rigid and recalcitrant structure which requires pretreatment to loosen chemical bonds to make accessible monomeric sugars for biofuel production. In this study, locally available biomass, that is hemp (Cannabis sativa), a low cost feedstock for ethanol production, has been used for the production of fermentable sugars. Hemp hurd biomass (HHB) was exposed to five different pretreatments which included dilute acid (H{sub 2}SO{sub 4}), alkaline (NaOH), alkaline peroxide, hot water and one stage dilute acid (H{sub 2}SO{sub 4}). Different pretreatments resulted in loosening and degradation of HHB structure thus facilitating enzymatic saccharification at optimized parameters (pH–4.8 and 50 °C). The changes in the reactive groups (hydroxyl or acetyl) of the HHB were confirmed by attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy. Scanning electron microscopy (SEM) was employed to characterize the surface morphology of untreated and treated HHB. Finally, enzymatic saccharification demonstrated maximum yield of total sugars (743 mg g{sup −1}) that are suitable for biofuel production. -- Highlights: • Hemp hurd biomass (HHB) was used for producing fermentable sugars. • Alkaline pretreatment resulted in loosening and degradation of hemp structure. • Pretreated HHB was characterized using FTIR studies. • SEM studies evaluated the opening of fiber bundles in pretreatment, thereby increasing cellulose access to enzymes. • Enzymatic saccharification of pretreated HHB demonstrated maximum yield of reducing sugars.

  10. Relationship to reducing sugar production and scanning electron microscope structure to pretreated hemp hurd biomass (Cannabis sativa)

    Abraham, Reinu E.; Barrow, Colin J.; Puri, Munish

    2013-01-01

    Lignocellulosic biomass is a highly rigid and recalcitrant structure which requires pretreatment to loosen chemical bonds to make accessible monomeric sugars for biofuel production. In this study, locally available biomass, that is hemp (Cannabis sativa), a low cost feedstock for ethanol production, has been used for the production of fermentable sugars. Hemp hurd biomass (HHB) was exposed to five different pretreatments which included dilute acid (H 2 SO 4 ), alkaline (NaOH), alkaline peroxide, hot water and one stage dilute acid (H 2 SO 4 ). Different pretreatments resulted in loosening and degradation of HHB structure thus facilitating enzymatic saccharification at optimized parameters (pH–4.8 and 50 °C). The changes in the reactive groups (hydroxyl or acetyl) of the HHB were confirmed by attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy. Scanning electron microscopy (SEM) was employed to characterize the surface morphology of untreated and treated HHB. Finally, enzymatic saccharification demonstrated maximum yield of total sugars (743 mg g −1 ) that are suitable for biofuel production. -- Highlights: • Hemp hurd biomass (HHB) was used for producing fermentable sugars. • Alkaline pretreatment resulted in loosening and degradation of hemp structure. • Pretreated HHB was characterized using FTIR studies. • SEM studies evaluated the opening of fiber bundles in pretreatment, thereby increasing cellulose access to enzymes. • Enzymatic saccharification of pretreated HHB demonstrated maximum yield of reducing sugars

  11. Comparison of traditional field retting and Phlebia radiata Cel 26 retting of hemp fibres for fibre-reinforced composites

    Liu, Ming; Ale, Marcel Tutor; Kołaczkowski, Bartłomiej

    2017-01-01

    Classical field retting and controlled fungal retting of hemp using Phlebia radiata Cel 26 (a mutant with low cellulose degrading ability) were compared with pure pectinase treatment with regard to mechanical properties of the produced fibre/epoxy composites. For field retting a classification...

  12. Effects of chemical-physical pre-treatment processes on hemp fibres for reinforcement of composites and textiles

    Thomsen, Anne Belinda; Thygesen, Anders; Bohn, Vibeke

    2006-01-01

    Retted hemp fibres were treated using chemical-physical pre-treatments and the material was characterised chemically in order to evaluate the effect of the pre-treatments, respectively, wet oxidation (WO), hydrothermal treatment (HT) and steam explosion (STEX). Process variables were addition...

  13. Nutritive quality of romanian hemp varieties (Cannabis sativa L. with special focus on oil and metal contents of seeds

    Mihoc Marcela

    2012-10-01

    Full Text Available Abstract Background The study aims to determine the nutritional value of hemp seed expressed by the oil content and by the concentration of metals (Ca, Mg, K, Fe, Mn, Zn and Cd, for five varieties of monoecious and dioecious hemp seeds approved in Romania, comparative with the concentration of these metals in the soil. Results The content of oil in hempseed registers a slight decrease in the production records of 2011, losses due to drought and low levels of precipitation during the growth period. The greatest loss is found in Diana monoecious variety (26.54-20.82% followed by Zenit varieties (27.37-22.97%, Armanca (29.27-25.32%, Silvana (28.89-25.04% and Denise (26.96-25.30%. Siccative hemp oil has a yellowish green color and an iodine index of 140–156 g I2/100 g oil. Hemp seed are rich in mineral based Ca (144–955 mg/100 g seed, Mg (237–694 mg/100 g seed, K (463–2821 mg/100 g seed, Fe (1133-2400 mg.kg-1, Mn (63–110 mg.kg-1 and Zn (42-94 mg.kg-1. For the soil the following macroelements concentrations were determined: Ca (2100–2520 mg.kg-1, Mg (320–376 mg.kg-1 and K (232–257 mg.kg-1. Mn (156–197 mg.kg-1 and Zn (54–67 mg.kg-1 remain within normal limits for Romania. The soils in the experience area contain large amounts of Fe (19000–20430 mg.kg-1. The presence of K in large quantities determines the accumulation of large quantities of Fe in the soil. Conclusion Hempseed belonging to the five Romanian varieties are rich source of nutrients (Ca, Mg, K and unsaturated oil easily digestible by the body, but the presence of Cd concentrations above the upper limit puts a question mark over the use of seeds in various food products. Hemp extracts easily certain metals from the soil. Significant amounts of Fe (1133–2400 mg.kg-1, Mn (63–110 mg.kg-1, Zn (42–94 mg.kg-1 and Cd (1.3-4.0 mg.kg-1 are found in hemp seeds. Hemp (Cannabis sativa L. is included among plants suitable for phytoremediation of soil contaminated with cadmium

  14. ING1 and 5-azacytidine act synergistically to block breast cancer cell growth.

    Satbir Thakur

    Full Text Available Inhibitor of Growth (ING proteins are epigenetic "readers" that recognize trimethylated lysine 4 of histone H3 (H3K4Me3 and target histone acetyl transferase (HAT and histone deacetylase (HDAC complexes to chromatin.Here we asked whether dysregulating two epigenetic pathways with chemical inhibitors showed synergistic effects on breast cancer cell line killing. We also tested whether ING1 could synergize better with chemotherapeutics that target the same epigenetic mechanism such as the HDAC inhibitor LBH589 (Panobinostat or a different epigenetic mechanism such as 5-azacytidine (5azaC, which inhibits DNA methyl transferases. Simultaneous treatment of breast cancer cell lines with LBH589 and 5azaC did not show significant synergy in killing cells. However, combination treatment of ING1 with either LBH589 or 5azaC did show synergy. The combination of ING1b with 5azaC, which targets two distinct epigenetic mechanisms, was more effective at lower doses and enhanced apoptosis as determined by Annexin V staining and cleavage of caspase 3 and poly-ADP-ribose polymerase (PARP. ING1b plus 5azaC also acted synergistically to increase γH2AX staining indicating significant levels of DNA damage were induced. Adenoviral delivery of ING1b with 5azaC also inhibited cancer cell growth in a murine xenograft model and led to tumor regression when viral concentration was optimized in vivo.These data show that targeting distinct epigenetic pathways can be more effective in blocking cancer cell line growth than targeting the same pathway with multiple agents, and that using viral delivery of epigenetic regulators can be more effective in synergizing with a chemical agent than using two chemotherapeutic agents. This study also indicates that the ING1 epigenetic regulator may have additional activities in the cell when expressed at high levels.

  15. Ethanol and supercritical fluid extracts of hemp seed (Cannabis sativa L. increase gene expression of antioxidant enzymes in HepG2 cells

    Sunghyun Hong

    2015-06-01

    Conclusions: In conclusion, the findings of our study demonstrated that the hemp seed effectively inhibited H2O2 mediated oxidative stress and may be useful as a therapeutic agent in preventing oxidative stress mediated diseases.

  16. Durability of Starch Based Biodegradable Plastics Reinforced with Manila Hemp Fibers

    Shinji Ochi

    2011-02-01

    Full Text Available The biodegradability of Manila hemp fiber reinforced biodegradable plastics was studied for 240 days in a natural soil and 30 days in a compost soil. After biodegradability tests, weights were measured and both tensile strength tests and microscopic observation were performed to evaluate the biodegradation behavior of the composites. The results indicate that the tensile strength of the composites displays a sharp decrease for up to five days, followed by a gradual decrease. The weight loss and the reduction in tensile strength of biodegradable composite materials in the compost soil are both significantly greater than those buried in natural soil. The biodegradability of these composites is enhanced along the lower portion because this area is more easily attacked by microorganisms.

  17. Durability of Starch Based Biodegradable Plastics Reinforced with Manila Hemp Fibers.

    Ochi, Shinji

    2011-02-25

    The biodegradability of Manila hemp fiber reinforced biodegradable plastics was studied for 240 days in a natural soil and 30 days in a compost soil. After biodegradability tests, weights were measured and both tensile strength tests and microscopic observation were performed to evaluate the biodegradation behavior of the composites. The results indicate that the tensile strength of the composites displays a sharp decrease for up to five days, followed by a gradual decrease. The weight loss and the reduction in tensile strength of biodegradable composite materials in the compost soil are both significantly greater than those buried in natural soil. The biodegradability of these composites is enhanced along the lower portion because this area is more easily attacked by microorganisms.

  18. Dynamic mechanical analysis and crystalline analysis of hemp fiber reinforced cellulose filled epoxy composite

    Palanivel, Anand; Duruvasalu, Rajesh; Iyyanar, Saranraj; Velumayil, Ramesh, E-mail: p.anand@ymail.com [Mechanical Engineering, Vel Tech Dr RR. & Dr. SR University, Avadi, Chennai, Tamilnadu (India); Veerabathiran, Anbumalar [Mechanical Engineering, Velammal College of Engineering & Technology, Madurai, TN (India)

    2017-07-01

    The Dynamic mechanical behavior of chemically treated and untreated hemp fiber reinforced composites was investigated. The morphology of the composites was studied to understand the interaction between the filler and polymer. A series of dynamic mechanical tests were performed by varying the fiber loading and test frequencies over a range of testing temperatures. It was found that the storage modulus (E') recorded above the glass transition temperature (Tg) decrease with increasing temperature. The loss modulus (E”) and damping peaks (Tan δ) values were found to be reduced with increasing matrix loading and temperature. Morphological changes and crystallinity of Composites were investigated using scanning electron microscope (SEM) and XRD techniques. The composites with Alkali and Benzoyl treated fibers has attributed enhanced DMA Results. In case of XRD studies, the composites with treated fibers with higher filler content show enhanced crystallinity. (author)

  19. Dynamic mechanical analysis and crystalline analysis of hemp fiber reinforced cellulose filled epoxy composite

    Anand Palanivel

    Full Text Available Abstract The Dynamic mechanical behavior of chemically treated and untreated hemp fiber reinforced composites was investigated. The morphology of the composites was studied to understand the interaction between the filler and polymer. A series of dynamic mechanical tests were performed by varying the fiber loading and test frequencies over a range of testing temperatures. It was found that the storage modulus (E’ recorded above the glass transition temperature (Tg decrease with increasing temperature. The loss modulus (E” and damping peaks (Tan δ values were found to be reduced with increasing matrix loading and temperature. Morphological changes and crystallinity of Composites were investigated using scanning electron microscope (SEM and XRD techniques. The composites with Alkali and Benzoyl treated fibers has attributed enhanced DMA Results. In case of XRD studies, the composites with treated fibers with higher filler content show enhanced crystallinity.

  20. Interconnected carbon nanosheets derived from hemp for ultrafast supercapacitors with high energy.

    Wang, Huanlei; Xu, Zhanwei; Kohandehghan, Alireza; Li, Zhi; Cui, Kai; Tan, Xuehai; Stephenson, Tyler James; King'ondu, Cecil K; Holt, Chris M B; Olsen, Brian C; Tak, Jin Kwon; Harfield, Don; Anyia, Anthony O; Mitlin, David

    2013-06-25

    We created unique interconnected partially graphitic carbon nanosheets (10-30 nm in thickness) with high specific surface area (up to 2287 m(2) g(-1)), significant volume fraction of mesoporosity (up to 58%), and good electrical conductivity (211-226 S m(-1)) from hemp bast fiber. The nanosheets are ideally suited for low (down to 0 °C) through high (100 °C) temperature ionic-liquid-based supercapacitor applications: At 0 °C and a current density of 10 A g(-1), the electrode maintains a remarkable capacitance of 106 F g(-1). At 20, 60, and 100 °C and an extreme current density of 100 A g(-1), there is excellent capacitance retention (72-92%) with the specific capacitances being 113, 144, and 142 F g(-1), respectively. These characteristics favorably place the materials on a Ragone chart providing among the best power-energy characteristics (on an active mass normalized basis) ever reported for an electrochemical capacitor: At a very high power density of 20 kW kg(-1) and 20, 60, and 100 °C, the energy densities are 19, 34, and 40 Wh kg(-1), respectively. Moreover the assembled supercapacitor device yields a maximum energy density of 12 Wh kg(-1), which is higher than that of commercially available supercapacitors. By taking advantage of the complex multilayered structure of a hemp bast fiber precursor, such exquisite carbons were able to be achieved by simple hydrothermal carbonization combined with activation. This novel precursor-synthesis route presents a great potential for facile large-scale production of high-performance carbons for a variety of diverse applications including energy storage.

  1. Electric generator overhaul of the Ing. Carlos Ramirez Ulloa hydroelectric. Central project conclusions; Rehabilitacion de los generadores de la central hidroelectrica Ing. Carlos Ramirez Ulloa. Conclusiones del proyecto

    Campuzano Martinez, Ignacio Roberto; Gonzalez Vazquez, Alejandro Esteban; Robles Pimentel, Edgar Guillermo; Esparza Saucedo, Marcos; Garcia Martinez, Javier; Sanchez Flores, Ernesto; Martinez Romero, Jose Luis [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1999-12-31

    The Hydroelectric Ing. Carlos Ramirez Ulloa Power Central has three 200 MW electric generators. The Central initiated its commercial operation in 1985. The electric generators had design problems that were properly corrected in an overhaul program that was initiated in 1996, with Unit 2 electric generator and completed in 1998 with Unit 1 electric generator. This paper presents the relevant aspects of the experience accumulated in the project. [Espanol] La central hidroelectrica Ing. Carlos Ramirez Ulloa cuenta con tres generadores de 200 MW cada uno. La central inicio su operacion comercial en 1985. Los generadores tenian problemas de diseno que fueron debidamente corregidos en un programa de rehabilitacion que inicio en 1996, con el generador de la unidad 2, y culmino en 1998 con el generador de la unidad 1. En este articulo se presentan los aspectos relevantes de la experiencia acumulada en el proyecto.

  2. Electric generator overhaul of the Ing. Carlos Ramirez Ulloa hydroelectric. Central project conclusions; Rehabilitacion de los generadores de la central hidroelectrica Ing. Carlos Ramirez Ulloa. Conclusiones del proyecto

    Campuzano Martinez, Ignacio Roberto; Gonzalez Vazquez, Alejandro Esteban; Robles Pimentel, Edgar Guillermo; Esparza Saucedo, Marcos; Garcia Martinez, Javier; Sanchez Flores, Ernesto; Martinez Romero, Jose Luis [Instituto de Investigaciones Electricas, Cuernavaca (Mexico)

    1998-12-31

    The Hydroelectric Ing. Carlos Ramirez Ulloa Power Central has three 200 MW electric generators. The Central initiated its commercial operation in 1985. The electric generators had design problems that were properly corrected in an overhaul program that was initiated in 1996, with Unit 2 electric generator and completed in 1998 with Unit 1 electric generator. This paper presents the relevant aspects of the experience accumulated in the project. [Espanol] La central hidroelectrica Ing. Carlos Ramirez Ulloa cuenta con tres generadores de 200 MW cada uno. La central inicio su operacion comercial en 1985. Los generadores tenian problemas de diseno que fueron debidamente corregidos en un programa de rehabilitacion que inicio en 1996, con el generador de la unidad 2, y culmino en 1998 con el generador de la unidad 1. En este articulo se presentan los aspectos relevantes de la experiencia acumulada en el proyecto.

  3. De quels ingénieurs parle-t-on ? Situation et trajectoires des ingénieurs des grandes écoles. Le cas du Maroc

    Pierre Vermeren

    2009-05-01

    Full Text Available Cet article est consacré au cas des « ingénieurs de conception » marocains, formés la plupart du temps dans les grandes écoles françaises. Cette fraction des ingénieurs marocains (dont la majorité est formée dans les écoles d'ingénieurs du Maroc n'est pas loin de constituer une véritable aristocratie de fonction. Ce phénomène illustre la structure sociale très inégalitaire du Maroc et la stratification opérée par la monarchie (le Makhzen pour sélectionner ses élites, qui sont aujourd'hui des élites à la fois technocratiques et sociales. Cette domination des « technocrates » sur l'appareil d'Etat marocain, analysée ici à travers des publics étudiants de grandes écoles, s'accompagne de l'émergence d'une contre-élite sociale de contestation. Les écoles d'ingénieurs de second rang, peuplées par les éléments des classes moyennes, ont été le premier terreau des mouvements islamistes en milieu universitaire. Elles produisent aujourd'hui une contre-élite politique et sociale qui piétine aux portes du vrai pouvoir.

  4. Pour une ingénierie des Environnements Informatiques pour l'Apprentissage Humain

    Tchounikine , Pierre

    2002-01-01

    Nous proposons dans cet article une réflexion sur la notion d'ingénierie des EIAH (Environnements Informatiques pour l'Apprentissage Humain). Nous posons tout d'abord une définition de l'ingénierie des EIAH : travaux visant à définir des éléments de méthodes et de techniques reproductibles et/ou réutilisables facilitant la mise en place (conception – réalisation – expérimentation – évaluation - diffusion) d'environnements de formation ou d'apprentissage (dans leur articulation avec les dispos...

  5. Investigation of the Mechanical Properties of Hybrid Carbon-Hemp Laminated Composites Used as Thermal Insulation for Different Industrial Applications

    M. L. Scutaru

    2014-04-01

    Full Text Available Carbon-hemp composite laminate provides good thermal properties. For this reason this type of material is presently being used for various applications like insulator for airplanes, spaceships, nuclear reactors, and so forth. Unfortunately their mechanical properties are less studied. These characteristics are very important since they should be guaranteed also for important mechanical stress in addition to the thermal one. The present paper presents a study regarding the impact testing of some hybrid composite laminate panels based on polyester resin reinforced with both carbon and hemp fabric. The effects of different impact speeds on the mechanical behavior of these panels have been analyzed. The paper lays stress on the characterization of this hybrid composite laminate regarding the impact behavior of these panels by dropping a weight with low velocity.

  6. Influence of Hybridizing Flax and Hemp-Agave Fibers with Glass Fiber as Reinforcement in a Polyurethane Composite

    Pankaj Pandey

    2016-05-01

    Full Text Available In this study, six combinations of flax, hemp, and glass fiber were investigated for a hybrid reinforcement system in a polyurethane (PU composite. The natural fibers were combined with glass fibers in a PU composite in order to achieve a better mechanical reinforcement in the composite material. The effect of fiber hybridization in PU composites was evaluated through physical and mechanical properties such as water absorption (WA, specific gravity (SG, coefficient of linear thermal expansion (CLTE, flexural and compression properties, and hardness. The mechanical properties of hybridized samples showed mixed trends compared to the unhybridized samples, but hybridization with glass fiber reduced water absorption by 37% and 43% for flax and hemp-agave PU composites respectively.

  7. Nitrogen accumulation and release by sunn hemp, calopo, mucana and devil bean in semi-arid Ghana

    Fosu, Mathias

    2003-01-01

    Four leguminous cover crops, Calopogonium mucunoides (calopo), Mucuna prupriens (mucuna), Crotalaria juncea (sunn hemp) and Crotalaria retusa (devil bean) were evaluated on the field in Northern Ghana for N 2 fixation capacity and N release. The proportion on N derived from the atmosphere (% Ndfa) by the cover crops ranged from 64.7 to 81% with mucuna giving the highest % Ndfa and calopo the least. The total N 2 fixed ranged from 59 to 109.5 kg ha 4 with devil bean giving the largest and the least from calopo. The dry matter yield of cover crops was positively correlated with the amount of N 2 , fixed but not with the percent of N derived from the atmosphere (%Ndfa). Sunn hemp, which had the best residue quality (least per cent cellulose, lignin, C N ratio and Lignin N ratio), released 50% of its N within the first two weeks while the other cover crops with relatively poor residue quality released 25% of their N within the same period. By the end of the rainy season sunn hemp had released 90% of the residue N while the other cover crops had released 80%. (author)

  8. Synthesis of vertical MnO_2 wire arrays on hemp-derived carbon for efficient and robust green catalysts

    Yang, MinHo; Kim, Dong Seok; Sim, Jae-Wook; Jeong, Jae-Min; Kim, Do Hyun; Choi, Jae Hyung; Kim, Jinsoo; Kim, Seung-Soo; Choi, Bong Gill

    2017-01-01

    Highlights: • The three-dimensional nanocomposites based on vertical MnO_2 array on hemp-derived carbon (HDC) were prepared by hydrothermal method. • The 3D v-MnO_2/HDC nanocomposites showed well-defined porous nature with a high specific surface area of 382.3 m"2 g"−"1. • PET glycolysis was performed using the 3D v-MnO_2/HDC nanocomposites as a catalyst, leading to efficient catalytic performance. - Abstract: Three-dimensional (3D) carbon materials derived from waste biomass have been attracted increasing attention in catalysis and materials science because of their great potential of catalyst supports with respect to multi-functionality, unique structures, high surface area, and low cost. Here, we present a facile and efficient way for preparing 3D heterogeneous catalysts based on vertical MnO_2 wires deposited on hemp-derived 3D porous carbon. The 3D porous carbon materials are fabricated by carbonization and activation processes using hemp (Cannabis Sttiva L.). These 3D porous carbon materials are employed as catalyst supports for direct deposition of vertical MnO_2 wires using a one-step hydrothermal method. The XRD and XPS results reveal the crystalline structure of α-MnO_2 wires. The resultant composites are further employed as a catalyst for glycolysis of poly(ethylene terephthalate) (PET) with high conversion yield of 98%, which is expected to be expressly profitable for plastics recycling industry.

  9. Influence of the precursor chemical composition on heavy metal adsorption properties of hemp (Cannabis Sativa fibers based biocarbon

    Vukčević Marija M.

    2017-01-01

    Full Text Available Waste hemp (Cannabis sativa fibers were used as sustainable and renewable raw materials for production of low-cost biocarbon sorbent for heavy metals removal. Carbon precursors of different chemical composition were obtained by oxidative and alkaline treatments of hemp fibers. Influence of lignocellulosic precursor chemical composition on hemp fibers-based biocarbon (HFB characteristics was examined by BET surface area measurement, scanning electron microscopy and mass titration. It was found that lignin content and polymorphic transformation of cellulose increase the SBET of microporous HFBs, while hemicelluloses induce more homogeneous distribution of adsorption active sites. Heavy metal ions adsorption onto HFBs is primarily influenced by the amount of surface oxygen groups, while specific surface area plays a secondary role. Equilibrium data obtained for lead ions adsorption were analyzed by different nonlinear adsorption isotherms, and the best fitting model was chosen using standard deviation and Akaike information criterion (AICC. The maximum adsorption capacities of HFBs ranged from 103.1 to 116.3 mg Pb/g. Thermodynamic parameters showed that Pb2+ adsorption onto HFBs is a spontaneous and complex endothermic process, suggesting the coexistence of physisorption and chemisorption mechanisms. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 172007 and Grant no. 172029

  10. The effect of particle shape and size distribution on the acoustical properties of mixtures of hemp particles.

    Glé, Philippe; Gourdon, Emmanuel; Arnaud, Laurent; Horoshenkov, Kirill-V; Khan, Amir

    2013-12-01

    Hemp concrete is an attractive alternative to traditional materials used in building construction. It has a very low environmental impact, and it is characterized by high thermal insulation. Hemp aggregate particles are parallelepiped in shape and can be organized in a plurality of ways to create a considerable proportion of open pores with a complex connectivity pattern, the acoustical properties of which have never been examined systematically. Therefore this paper is focused on the fundamental understanding of the relations between the particle shape and size distribution, pore size distribution, and the acoustical properties of the resultant porous material mixture. The sound absorption and the transmission loss of various hemp aggregates is characterized using laboratory experiments and three theoretical models. These models are used to relate the particle size distribution to the pore size distribution. It is shown that the shape of particles and particle size control the pore size distribution and tortuosity in shiv. These properties in turn relate directly to the observed acoustical behavior.

  11. Improving Science Teacher Preparation through the APS PhysTEC and NSF Noyce Programs

    Williams, Tasha; Tyler, Micheal; van Duzor, Andrea; Sabella, Mel

    2013-03-01

    Central to the recruitment of students into science teaching at a school like CSU, is a focus on the professional nature of teaching. The purpose of this focus is twofold: it serves to change student perceptions about teaching and it prepares students to become teachers who value continued professional development and value the science education research literature. The Noyce and PhysTEC programs at CSU place the professional nature of teaching front and center by involving students in education research projects, paid internships, attendance at conferences, and participation in a new Teacher Immersion Institute and a Science Education Journal Reading Class. This poster will focus on specific components of our teacher preparation program that were developed through these two programs. In addition we will describe how these new components provide students with diverse experiences in the teaching of science to students in the urban school district. Supported by the NSF Noyce Program (0833251) and the APS PhysTEC Program.

  12. On Mathematicians' Proof Skimming: A Reply to Inglis and Alcock

    Weber, Keith; Mejia-Ramos, Juan Pablo

    2013-01-01

    n a recent article, Inglis and Alcock (2012) contended that their data challenge the claim that when mathematicians validate proofs, they initially skim a proof to grasp its main idea before reading individual parts of the proof more carefully. This result is based on the fact that when mathematicians read proofs in their study, on average their…

  13. Impact of pEGFP mediated ING4 gene on growth of glioma U251 ...

    Jane

    2011-06-22

    Jun 22, 2011 ... Full Length Research Paper. Impact of pEGFP mediated ING4 gene on growth of glioma U251 cells and its potential molecular mechanism. Yuefei Deng*, Bingxi Lei and Yiying Zhao. Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, China.

  14. BE-ing @Work: Wearables and Presence of Mind in the Workplace

    Forbes Oste, Heidi

    2016-01-01

    Expectations and demands in the changing contemporary workplace are driven by emergent technologies. Ubiquitous in nature, they are designed to enhance human and organization potential. These technologies provide access to information and connection at all times. They are increasingly reliant on human relationships and connection. BE-ing one's…

  15. Detennination Qf Optimuni on-fann Seed Pri~ing Time for Maize ...

    maize seed to on-far111 priming is an important development which can be used to improve ... Key words: semi-arid: crop establishment; sorghum; maize: on-farm seed priming; Zimbapwe. ... faster growth and higher yield after seed prim-, ing.

  16. 77 FR 74245 - ING Investments, LLC, et al.; Notice of Application

    2012-12-13

    ... SECURITIES AND EXCHANGE COMMISSION [Investment Company Act Release No. 30295; 812-14013] ING Investments, LLC, et al.; Notice of Application December 6, 2012. AGENCY: Securities and Exchange Commission (``Commission''). ACTION: Notice of application for an order under section 17(d) of the Investment Company Act...

  17. Effects of thermal and enzymatic treatments and harvesting time on the microbial quality and chemical composition of fibre hemp (Cannabis sativa L.)

    Nykter, Minna; Kymaelaeinen, Hanna-Riitta; Sjoeberg, Anna-Maija [Department of Agrotechnology, University of Helsinki, P.O. Box 28, FI-00014 University of Helsinki (Finland); Thomsen, Anne Belinda; Thygesen, Anders [Biosystems Department, Risoe National Laboratory, P.O. Box 49, DK-4000 Roskilde (Denmark); Lilholt, Hans [Materials Research Department, Risoe National Laboratory, P.O. Box 49, DK-4000 Roskilde (Denmark); Koponen, Hilkka [Department of Applied Biology, Section of Plant Pathology, University of Helsinki, P.O. Box 27, FI-00014 University of Helsinki (Finland)

    2008-05-15

    The aim of the present study was to examine the effects of pectinase enzyme treatment followed by thermal treatments (steam explosion and dry heating) on the microbial quality and chemical composition of hemp fibres. Before these treatments, the fibres were separated manually from the stems harvested after stand retting in the field before frost, after early frost or in the following spring. The enzymatic treatment of hemp promoted growth of moulds on the fibres (500-fold increase in colony-forming units (cfu)), whereas steam explosion reduced the amount of moulds to a relatively constant level of 10{sup 2} cfu/g dw. The amount of bacteria was not markedly affected by enzymatic treatment but was reduced tenfold after steam explosion. Steam explosion is thereby a potentially good process for the production of hemp fibres with low fungal contamination, which can be of importance in insulation materials. Dry heating had no effect on mould and bacterial counts at temperatures below 120 C and durations less than 60 min. The chemical composition was affected by the enzymatic treatment due to extraction and degradation of water-soluble components, pectin and ash. Thus the cellulose content increased by 6% w/w to 67-70% w/w. Steam explosion of the untreated hemp fibres increased the cellulose content to 74% w/w, whereas steam explosion of enzymatically treated hemp increased the cellulose content to 78% w/w. (author)

  18. A virtual test of screening technology based on the AGEIA PhysX

    Ai-min Li; Rui-ling Lv; Chu-sheng Liu [China University of Mining and Technology, Xuzhou (China). School of Mechanical and Electrical Engineering

    2008-06-15

    The authors have created a virtual test of vibration particle-screening using Autodesk's 3ds Max software, the MAXScript scripting language and the AGEIA PhysX physics processing unit (PPU). The affect of various parameters on screening efficiency were modeled. The parameters included vibration amplitude, frequency and direction. The length and inclination of the vibrating surface were also varied. The virtual experiment is in basic agreement with results predicted from screening theory. This shows that the virtual screener can be used for preliminary investigations and the results used to evaluate screen design. In addition it can help with theoretical research. 11 refs., 7 figs., 7 tabs.

  19. Selective isolation and characterization of agriculturally beneficial endopytic bacteria from wild hemp using canola

    Afzal, I.; Iqrar, I.

    2015-01-01

    Endophytic bacteria can provide a useful alternative to synthetic fertilizers to improve plant growth. Wild plants are little investigated as a source of growth promoting endophytic bacteria for commercial application to crops. In present study, endophytic bacteria were isolated from Cannabis sativa L. (hemp) using two different methods to examine their ability to promote canola growth. Besides direct isolation from the roots, endophytic bacteria were also selectively isolated from the rhizosphere of C. sativa using canola. Under gnotobiotic conditions, six bacteria from the selective isolation significantly improved canola root growth, as compared to the two bacteria isolated from direct method. Overall, three isolates performed distinctly well, namely, Pantoea vagans MOSEL-t13, Pseudomonas geniculata MOSEL-tnc1, and Serratia marcescens MOSEL-w2. These bacteria tolerated high salt concentrations and promoted canola growth under salt stress. Further, the isolated bacteria possessed plant growth promoting traits like IAA production, phosphate solubilization, and siderophore production. Most isolates produced plant cell-wall degrading enzymes, cellulase and pectinase. Some isolates were also effective in hindering the growth of two phytopathogenic fungi in dual culture assay, and displayed chitinase and protease activity. Paenibacillus sp. MOSEL-w13 displayed the greatest antifungal activity among all the isolates. Present findings conclude that wild plants can be a good source for isolating beneficial microbes, and validates the employed selective isolation for improved isolation of plant-beneficial endophytic bacteria. (author)

  20. Flexible Bionanocomposites from Epoxidized Hemp Seed Oil Thermosetting Resin Reinforced with Halloysite Nanotubes.

    Shuttleworth, Peter S; Díez-Pascual, Ana M; Marco, Carlos; Ellis, Gary

    2017-03-23

    Hemp seed (Cannabis sativa L.) oil comprises a variety of beneficial unsaturated triglycerides with well-documented nutritional and health benefits. However, it can become rancid over a relatively short time period, leading to increased industrial costs and waste of a valuable product. The development of sustainable polymers is presented as a strategy, where both the presence of unsaturation and peroxide content could be effectively used to alleviate both the waste and financial burden. After the reaction with peroxyacetic acid, the incorporation of halloysite nanotubes (HNTs), and the subsequent thermal curing, without the need for organic solvents or interfacial modifiers, flexible transparent materials with a low glass-transition temperature were developed. The improvement in the thermal stability and both the static and dynamic mechanical properties of the bionanocomposites were significantly enhanced with the well-dispersed HNT filler. At an optimum concentration of 0.5 wt % HNTs, a simultaneous increase in stiffness, strength, ductility, and toughness was observed in comparison to the unfilled cured resin. These sustainable food-waste-derived bionanocomposites may provide an interesting alternative to petroleum-based materials, particularly for low-load-bearing applications, such as packaging.

  1. Cell wall microstructure, pore size distribution and absolute density of hemp shiv

    Jiang, Y.; Lawrence, M.; Ansell, M. P.; Hussain, A.

    2018-04-01

    This paper, for the first time, fully characterizes the intrinsic physical parameters of hemp shiv including cell wall microstructure, pore size distribution and absolute density. Scanning electron microscopy revealed microstructural features similar to hardwoods. Confocal microscopy revealed three major layers in the cell wall: middle lamella, primary cell wall and secondary cell wall. Computed tomography improved the visualization of pore shape and pore connectivity in three dimensions. Mercury intrusion porosimetry (MIP) showed that the average accessible porosity was 76.67 ± 2.03% and pore size classes could be distinguished into micropores (3-10 nm) and macropores (0.1-1 µm and 20-80 µm). The absolute density was evaluated by helium pycnometry, MIP and Archimedes' methods. The results show that these methods can lead to misinterpretation of absolute density. The MIP method showed a realistic absolute density (1.45 g cm-3) consistent with the density of the known constituents, including lignin, cellulose and hemi-cellulose. However, helium pycnometry and Archimedes' methods gave falsely low values owing to 10% of the volume being inaccessible pores, which require sample pretreatment in order to be filled by liquid or gas. This indicates that the determination of the cell wall density is strongly dependent on sample geometry and preparation.

  2. Effects of thermal and enzymatic treatments and harvesting time on the microbial quality and chemical composition of fibre hemp (Cannabis sativa L.)

    Nykter, M.; Kymalainen, H.R.; Thomsen, Anne Belinda

    2008-01-01

    The aim of the present study was to examine the effects of pectinase enzyme treatment followed by thermal treatments (steam explosion and dry heating) on the microbial quality and chemical composition of hemp fibres. Before these treatments, the fibres were separated manually from the stems...... materials. Dry heating had no effect on mould and bacterial counts at temperatures below 120 degrees C and durations less than 60 min. The chemical composition was affected by the enzymatic treatment due to extraction and degradation of water-soluble components, pectin and ash. Thus the cellulose content...... increased by 6% w/w to 67-70% w/w. Steam explosion of the untreated hemp fibres increased the cellulose content to 74% w/w, whereas steam explosion of enzymatically treated hemp increased the cellulose content to 78% w/w. (c) 2007 Elsevier Ltd. All rights reserved....

  3. Predicting the long-term durability of hemp-lime renders in inland and coastal areas using Mediterranean, Tropical and Semi-arid climatic simulations.

    Arizzi, Anna; Viles, Heather; Martín-Sanchez, Inés; Cultrone, Giuseppe

    2016-01-15

    Hemp-based composites are eco-friendly building materials as they improve energy efficiency in buildings and entail low waste production and pollutant emissions during their manufacturing process. Nevertheless, the organic nature of hemp enhances the bio-receptivity of the material, with likely negative consequences for its long-term performance in the building. The main purpose of this study was to study the response at macro- and micro-scale of hemp-lime renders subjected to weathering simulations in an environmental cabinet (one year was condensed in twelve days), so as to predict their long-term durability in coastal and inland areas with Mediterranean, Tropical and Semi-arid climates, also in relation with the lime type used. The simulated climatic conditions caused almost unnoticeable mass, volume and colour changes in hemp-lime renders. No efflorescence or physical breakdown was detected in samples subjected to NaCl, because the salt mainly precipitates on the surface of samples and is washed away by the rain. Although there was no visible microbial colonisation, alkaliphilic fungi (mainly Penicillium and Aspergillus) and bacteria (mainly Bacillus and Micrococcus) were isolated in all samples. Microbial growth and diversification were higher under Tropical climate, due to heavier rainfall. The influence of the bacterial activity on the hardening of samples has also been discussed here and related with the formation and stabilisation of vaterite in hemp-lime mixes. This study has demonstrated that hemp-lime renders show good durability towards a wide range of environmental conditions and factors. However, it might be useful to take some specific preventive and maintenance measures to reduce the bio-receptivity of this material, thus ensuring a longer durability on site. Copyright © 2015 Elsevier B.V. All rights reserved.

  4. Finanční analýza podniku Ing. Bronislav Vala

    Valová, Anežka

    2013-01-01

    Aim of this work is to evaluate the financial performance of the company Ing. Bronislav Vala based on financial analysis from 2008 to 2012. The applied methods od financial analysis are selected for this evaluation. The used methods include vertical and horizontal analysis, analysis of ratios, analysis of differential indicators, pyramidal decomposition Du Pont, value and bankruptcy models and inter-company comparisons. The thesis is divided into theoretical and practical parts. The theoretic...

  5. The 'Techniques de l'ingénieur' available online at CERN!

    2001-01-01

    Those already familiar with 'Techniques de l'ingénieur' will be delighted. This engineering technology database widely known among French-speaking engineers and technicians can now be consulted online from the CERN Intranet until the end of the summer. To access this database of reference articles in French, all you need to do is go to the CERN Library's Web pages (http://library.cern.ch) and click on the 'Techniques de l'ingénieur' link under the 'News' heading. The Library will be monitoring the use of the database for a couple of months, at the end of which an access licence may be negotiated. Don't hesitate to use it because the decision whether or not to purchase it will depend on the extent to which it is used. The Library is seeking partners within the Laboratory to finance the purchase if it is decided to go ahead with it. Contributions from the CERN community are therefore welcome. For those who are not yet familiar with it, the 'Techniques de l'ingénieur' database ...

  6. The ING Seismic Network Databank (ISND : a friendly parameters and waveform database

    G. Smriglio

    1995-06-01

    Full Text Available he Istituto Nazionale di Geofisica (ING Seismic Network Database (ISND includes over 300000 arrivaI times of Italian, Mediterranean and teleseismic earthquakes from 1983 to date. This database is a useful tool for Italian and foreign seismologists ( over 1000 data requests in the first 6 months of this year. Recently (1994 the ING began storing in the ISND, the digital waveforms associated with arri,Tal times and experimen- tally allowed users to retrieve waveforms recorded by the ING acquisition system. In this paper we describe the types of data stored and the interactive and batch procedures available to obtain arrivaI times and/or asso- ciated waveforms. The ISND is reachable via telephone line, P.S.I., Internet and DecNet. Users can read and send to their E-mail address alI selected earthquakes locations, parameters, arrivaI times and associated digital waveforms (in SAC, SUDS or ASCII format. For r;aedium or large amounts of data users can ask to receive data by means of magnetic media (DAT, Video 8, floppy disk.

  7. Oil-rich seeds from prehistoric contextsin southern Scandinavia – reflections on archaeobotanical records of fl ax, hemp, gold of pleasure, and corn spurrey

    Karg, Sabine

    2012-01-01

    . Although archaeobotanical records of oil plants are in most cases found in small numbers, they are often abundant at excavations in southern Scandinavia. This paper presents a diachronic review of plant records of fl ax (Linum usitatissimum L.) and hemp (Cannabis sativa L.), both known for the dual use...... as to whether corn spurrey had been a cultivar or if the seeds had been collected from wild populations. KEYWORDS: Archaeobotany, oil-rich seeds, fl ax, hemp, gold of pleasure, corn spurrey, southern Scandinavia...

  8. Controlled retting of hemp fibres: Effect of hydrothermal pre-treatmen tand enzymatic retting on the mechanical properties of unidirectiona lhemp/epoxy composites

    Liu, Ming; Silva, Diogo Alexandre Santos; Fernando, Dinesh

    2016-01-01

    The objective of this work was to investigate the use of hydrothermal pre-treatment and enzymatic retting to remove non-cellulosic compounds and thus improve the mechanical properties of hemp fibre/epoxy composites. Hydrothermal pre-treatment at 100 kPa and 121 °C combined with enzymatic retting...... produced fibres with the highest ultimate tensile strength (UTS) of 780 MPa. Compared to untreated fibres, this combined treatment exhibited a positive effect on the mechanical properties of hemp fibre/epoxy composites, resulting in high quality composites with low porosity factor (αpf) of 0.08.Traditional...

  9. Dislocations in single hemp fibres-investigations into the relationship of structural distortions and tensile properties at the cell wall level

    Thygesen, Lisbeth Garbrecht; Eder, M.; Burgert, I.

    2007-01-01

    The relationship between dislocations and mechanical properties of single hemp fibres (Cannabis sativa L. var. Felina) was studied using a microtensile testing setup in a 2-fold approach. In a first investigation the percentage of dislocations was quantified using polarized light microscopy (PLM......) prior to microtensile testing of the fibres. In a second approach PLM was used to monitor the dislocations while straining single fibres. The first part of the study comprised 53 hemp fibres with up to 20% of their cell wall consisting of dislocations. For this data set the percentage of dislocations...

  10. The crop-residue of fiber hemp cv. Futura 75: from a waste product to a source of botanical insecticides.

    Benelli, Giovanni; Pavela, Roman; Lupidi, Giulio; Nabissi, Massimo; Petrelli, Riccardo; Ngahang Kamte, Stephane L; Cappellacci, Loredana; Fiorini, Dennis; Sut, Stefania; Dall'Acqua, Stefano; Maggi, Filippo

    2018-04-01

    In the attempt to exploit the potential of the monoecious fiber hemp cv. Futura 75 in new fields besides textile, cosmetics and food industry, its crop-residue given by leaves and inflorescences was subjected to hydrodistillation to obtain the essential oils. These are niche products representing an ideal candidate for the development of natural insecticides for the control and management of mosquito vectors, houseflies and moth pests. After GC-MS analysis highlighting a safe and legal chemical profile (THC in the range 0.004-0.012% dw), the leaf and inflorescence essential oils were investigated for the insecticidal potential against three insect targets: the larvae of Culex quinquefasciatus and Spodoptera littoralis and the adults of Musca domestica. The essential oil from inflorescences, showing (E)-caryophyllene (21.4%), myrcene (11.3%), cannabidiol (CBD, 11.1%), α-pinene (7.8%), terpinolene (7.6%), and α-humulene (7.1%) as the main components, was more effective than leaf oil against these insects, with LD 50 values of 65.8 μg/larva on S. littoralis, 122.1 μg/adult on M. domestica, and LC 50 of 124.5 μl/l on C. quinquefasciatus larvae. The hemp essential oil moderately inhibited the acetylcholinesterase (AChE), which is a target enzyme in pesticide science. Overall, these results shed light on the future application of fiber hemp crop-residue for the development of effective, eco-friendly and sustainable insecticides.

  11. Short-Term Efficacy of CBD-Enriched Hemp Oil in Girls with Dysautonomic Syndrome after Human Papillomavirus Vaccination.

    Palmieri, Beniamino; Laurino, Carmen; Vadalà, Maria

    2017-02-01

    Cannabidiol (CBD)-based treatments for several diseases, including Tourette's syndrome, multiple sclerosis, epilepsy, movement disorders and glaucoma, are proving to be beneficial and the scientific clinical background of the drug is continuously evolving. To investigate the short-term effect of CBD-enriched hemp oil for relieving symptoms and improving the life quality (QOL) in young girls with adverse drug effects (ADRs) following human papillomavirus (HPV) vaccine. In this anecdotal, retrospective, "compassionate-use", observational, open-label study, 12 females (age 12-24 years) with severe somatoform and dysautonomic syndrome following HPV vaccination were given sublingual CBD-rich hemp oil drops, 25 mg/kg per day supplemented by 2-5 mg/ml CBD once a week until a maximum dose of 150 mg/ml CBD per day was reached over a 3 month period. Patients' quality of life was evaluated using the medical outcome short-form health survey questionnaire (SF-36). Two patients dropped out due to iatrogenic adverse events and another two patients stopped the treatment early due to lack of any improvement. SF-36 showed significant benefits in the physical component score (P oil also significantly reduced body pain according to the SF-36 assessment. No significant differences from the start of treatment to several months post-treatment were detected in role limitations due to emotional reactions (P = 0.02). This study demonstrated the safety and tolerability of CBD-rich hemp oil and the primary efficacy endpoint. Randomized controlled trials are warranted to characterize the safety profile and efficacy of this compound.

  12. FoRSIC : De l'ingénierie des compétences à l'ingénierie des connaissances.

    Ertzscheid , Olivier; Link-Pezet , Jo; Lacombe , Elisabeth

    2002-01-01

    FoRSIC [1] est un dispositif d'ingénierie des connaissances, qui s'ancre dans le champ de la formation à la recherche documentaire. Après avoir précisé le contexte théorique qui le sous-tend, nous décrirons ici les méthodologies qui nous ont permis de faire émerger des représenta-tions structurantes et partageables de ce domaine, à l'aide d'une ontologie des compétences docu-mentaires que nous relions au réseau sémantique du modèle de domaine.

  13. The inhibitor of growth protein 5 (ING5 depends on INCA1 as a co-factor for its antiproliferative effects.

    Feng Zhang

    Full Text Available The proteins of the Inhibitor of Growth (ING family are involved in multiple cellular functions such as cell cycle regulation, apoptosis, and chromatin remodeling. For ING5, its actual role in growth suppression and the necessary partners are not known. In a yeast-two-hybrid approach with human bone marrow derived cDNA, we identified ING5 as well as several other proteins as interaction partners of Inhibitor of cyclin A1 (INCA1 that we previously characterized as a novel interaction partner of cyclin A1/CDK2. ING5 expression in leukemic AML blasts was severely reduced compared to normal bone marrow. In line, ING5 inhibited bone marrow colony formation upon retroviral transduction. However, Inca1(-/- bone marrow colony formation was not suppressed by ING5. In murine embryonic fibroblast (MEF cells from Inca1(+/+ and Inca1(-/- mice, overexpression of ING5 suppressed cell proliferation only in the presence of INCA1, while ING5 had no effect in Inca1(-/- MEFs. ING5 overexpression induced a delay in S-phase progression, which required INCA1. Finally, ING5 overexpression enhanced Fas-induced apoptosis in Inca1(+/+ MEFs, while Inca1(-/- MEFs were protected from Fas antibody-induced apoptosis. Taken together, these results indicate that ING5 is a growth suppressor with suppressed expression in AML whose functions depend on its interaction with INCA1.

  14. Comment on “Effects of damping solitary wave in a viscosity bounded plasma” [Phys. Plasmas 21, 022118 (2014)

    Ghosh, Uday Narayan, E-mail: unghosh1@rediffmail.com; Chatterjee, Prasanta; Roychoudhury, Rajkumar [Department of Mathematics, Siksha Bhavana, Visva Bharati, Santiniketan 731235 (India)

    2015-07-15

    Recently Gun Li et al. discussed “Effects of damping solitary wave in a viscosity bounded plasma” [Phys. Plasmas 21, 022118 (2014)]. The paper contains some serious errors which have been pointed out in this Comment.

  15. Microwave-assisted ionic liquid-mediated rapid catalytic conversion of non-edible lignocellulosic Sunn hemp fibres to biofuels.

    Paul, Souvik Kumar; Chakraborty, Saikat

    2018-04-01

    Sunn hemp fibre - a cellulose-rich crystalline non-food energy crop, containing 75.6% cellulose, 10.05% hemicellulose, 10.32% lignin, with high crystallinity (80.17%) and degree of polymerization (650) - is identified as a new non-food substrate for lignocellulosic biofuel production. Microwave irradiation is employed to rapidly rupture the cellulose's glycosidic bonds and enhance glucose yield to 78.7% at 160 °C in only 46 min. The reactants - long-chain cellulose, ionic liquid, transition metal catalyst, and water - form a polar supramolecular complex that rotates under the microwave's alternating polarity and rapidly dissipates the electromagnetic energy through molecular collisions, thus accelerating glycosidic bond breakage. In 46 min, 1 kg of Sunn hemp fibres containing 756 g of cellulose produces 595 g of glucose at 160 °C, and 203 g of hydroxymethyl furfural (furanic biofuel precursor) at 180 °C. Yeast mediated glucose fermentation produces 75.6% bioethanol yield at 30 °C, and the ionic liquid is recycled for cost-effectiveness. Copyright © 2018 Elsevier Ltd. All rights reserved.

  16. Experimental characterization of thermal and hygric properties of hemp concrete with consideration of the material age evolution

    Bennai, F.; Issaadi, N.; Abahri, K.; Belarbi, R.; Tahakourt, A.

    2018-04-01

    The incorporation of plant crops in construction materials offers very good hygrothermal performance to the building, ensuring substantial environmental and ecological benefits. This paper focuses on studying the evolution of hygrothermal properties of hemp concrete over age (7, 30 and 60 days). The analysis is done with respect to two main hygric and thermal properties, respectively: sorption isotherms, water vapor permeability, thermal conductivity and heat capacity. In fact, most of these parameters are very susceptible to change function of the age of the material. This influence of the aging is mainly due to the evolution of the microstructure with the binder hydration over time and the creation of new hydrates which can reduces the porosity of the material and consequently modify its properties. All the tested hemp concrete samples presented high moisture storage capacity and high-water vapor permeability whatever the age of such hygroscopic material. These hygric parameters increase significantly for high relative humidity requiring more consideration of such variability during the modeling of coupled heat and mass transfer within the material. By the same, the thermal conductivity and heat capacity tests highlighted the impact of the temperature and hygric state of the studied material.

  17. Synthesis of vertical MnO2 wire arrays on hemp-derived carbon for efficient and robust green catalysts

    Yang, MinHo; Kim, Dong Seok; Sim, Jae-Wook; Jeong, Jae-Min; Kim, Do Hyun; Choi, Jae Hyung; Kim, Jinsoo; Kim, Seung-Soo; Choi, Bong Gill

    2017-06-01

    Three-dimensional (3D) carbon materials derived from waste biomass have been attracted increasing attention in catalysis and materials science because of their great potential of catalyst supports with respect to multi-functionality, unique structures, high surface area, and low cost. Here, we present a facile and efficient way for preparing 3D heterogeneous catalysts based on vertical MnO2 wires deposited on hemp-derived 3D porous carbon. The 3D porous carbon materials are fabricated by carbonization and activation processes using hemp (Cannabis Sttiva L.). These 3D porous carbon materials are employed as catalyst supports for direct deposition of vertical MnO2 wires using a one-step hydrothermal method. The XRD and XPS results reveal the crystalline structure of α-MnO2 wires. The resultant composites are further employed as a catalyst for glycolysis of poly(ethylene terephthalate) (PET) with high conversion yield of 98%, which is expected to be expressly profitable for plastics recycling industry.

  18. The intense neutron generator INGE-1 at the Technical University of Dresden

    Bittner, M.; Meisner, A.; Paffrath, E.; Schwiers, H.; Seeliger, D.

    1989-01-01

    The INGE-1 neutron generator developed for intergal 14 MeV neutron experiments is described. The accelerator produces steady d + ion beam in the current range of 1-10 mA with 120-240 keV energies at the target position. The beam is produced with a combined duoplasmatron focalization system on high voltage. A 30 keV beam is accelerated on final energy by a two-gap acceleration tube. The estimations conducted show that the generator maximum strength can reach up to 2x10 12 s -1 at 10 mA beam current and 220 keV energy. 4 refs

  19. PyDecay/GraphPhys: A Unified Language and Storage System for Particle Decay Process Descriptions

    Dunietz, Jesse N.; /MIT /SLAC

    2011-06-22

    To ease the tasks of Monte Carlo (MC) simulation and event reconstruction (i.e. inferring particle-decay events from experimental data) for long-term BaBar data preservation and analysis, the following software components have been designed: a language ('GraphPhys') for specifying decay processes, common to both simulation and data analysis, allowing arbitrary parameters on particles, decays, and entire processes; an automated visualization tool to show graphically what decays have been specified; and a searchable database storage mechanism for decay specifications. Unlike HepML, a proposed XML standard for HEP metadata, the specification language is designed not for data interchange between computer systems, but rather for direct manipulation by human beings as well as computers. The components are interoperable: the information parsed from files in the specification language can easily be rendered as an image by the visualization package, and conversion between decay representations was implemented. Several proof-of-concept command-line tools were built based on this framework. Applications include building easier and more efficient interfaces to existing analysis tools for current projects (e.g. BaBar/BESII), providing a framework for analyses in future experimental settings (e.g. LHC/SuperB), and outreach programs that involve giving students access to BaBar data and analysis tools to give them a hands-on feel for scientific analysis.

  20. Phys FilmMakers: teaching science students how to make YouTube-style videos

    Coates, Rebecca L.; Kuhai, Alvina; Turlej, Laurence Z. J.; Rivlin, Tom; McKemmish, Laura K.

    2018-01-01

    Phys FilmMakers (PFM) is a new type of course in which a science expert and science communicator partner teach physics students how to make YouTube-style videos on cutting-edge scientific research within the university department. Here, we describe this new course, outline its key components and provide recommendations for others considering implementing a similar FilmMakers-style course using feedback from course tutors and students. We discuss successful and less successful teaching techniques as well as use our experience to identify areas that science students in particular often have difficulties: finding an interesting ‘hook’ for the video, imagining creative B-roll and making a succinct video by removing extraneous (though usually correct and often interesting) material. The course has two major components: workshop sessions in which students learn the key elements of film-making and independent video production where PFM students partner with senior PhD or post-doc researchers to produce a video on their research. This partnership with the department means that the videos produced serve not only as interesting ‘edutainment’ to encourage teenagers and young adults into Science, Technology, Engineering and Maths subjects, but also provide valuable outreach for the academic department.

  1. Fusarium spp. suppress germination and parasitic establishment of bean and hemp broomrapes

    Mohamed A. Abouzeid

    2010-05-01

    Full Text Available Thirty-nine Fusarium isolates were obtained from newly emerged infected bean broomrape (Orobanche crenata and hemp broomrape (O. ramosa collected from infested fields of faba bean (Vicia faba and tomato (Lycopersicon esculentum respectively, in two governorates located south of Giza, Egypt. All Fusarium isolates were identified to species level and the effect of their culture filtrates on the germination of seeds from the two Orobanche species was tested in vitro. The inhibition of seed germination differed between the tested Fusarium isolates, depending on the plant part from which they were isolated, with isolates from the shoots of Orobanche inhibiting seed germination more than isolates from the inflorescences. The culture filtrates of Fusarium species from O. crenata were more toxic to the seeds of both Orobanche species than the Fusarium filtrates from O. ramosa. Seeds of O. crenata were more resistant to Fusarium culture filtrates than seeds of O. ramosa. The highest inhibition of Orobanche seed germination was achieved by six Fusarium isolates, one of which was identified as F. oxysporum, one as F. equiseti, whilst the other four were all F. compactum. Aqueous mixtures of mycelia and conidia of all the Fusarium isolates were directly sprayed on O. ramosa tubercles attached to the roots of tomato plants grown in transparent plastic bags, and were also used to infest soil in pots seeded with both faba bean and O. crenata. Two of the four F. compactum isolates (22 and 29 were significantly more pathogenic against O. crenata and O. ramosa, respectively, than the other Fusarium isolates tested in the pots and plastic bags. The study clearly shows the potential of biocontrol agents originating in one Orobanche sp. (e.g. O. crenata to control another Orobanche sp. (e.g. O. ramosa, as many Fusarium isolates deriving from O. crenata were found to be more pathogenic to O. ramosa seeds than the isolates from O. ramosa themselves. This may widen the

  2. Quality of wooden chips produced by Claas Jaguar fitted with experimental CRA-ING rotor

    Pari, L.; Civitarese, V.; Del Giudice, A. [Council for Research in Agriculture, Agricultural Engineering Research Unit, Rome (Italy)

    2010-07-01

    This paper described a newly developed chipper device for mounting on Claas Jaguar chipper harvesters for short rotation forestry harvesting. It was designed by the Agriculture Engineering Research Unit of the Agricultural Research Council in Rome, Italy. The new rotor has a lower number of blades compared to standard rotors and has a different cutting angle and drum insertion. This study evaluated the particle-size distribution of wood chips produced by standard rotors compared to those with the experimental rotor. The objective was to distinguish the particle size distribution of chips produced using the two types of chippers in order to evaluate the influence of wooden species in the chip formation process. Tests were conducted using 860 and 890 Claas Jaguar chipper harvesters, both equipped with standard and CRA-ING rotors. The experiment was conducted on poplar cultivations on biennial shift and on arboreal cultivations. Compared to traditional rotors, CRA-ING rotors provide a considerable product increase within particle sizes ranging from 12.5 to 25 mm, and an equivalent product reduction within the finest particle size classes. The study showed that the new rotor tends to concentrate dimensional increments along the longitudinal section of the chip, regardless of the species used. In order to obtain a better quality chip in terms of particle size, a second rotor was devised to engrave a cleaner cut on the biomass introduced by the feeding rollers.

  3. LoopIng: a template-based tool for predicting the structure of protein loops.

    Messih, Mario Abdel

    2015-08-06

    Predicting the structure of protein loops is very challenging, mainly because they are not necessarily subject to strong evolutionary pressure. This implies that, unlike the rest of the protein, standard homology modeling techniques are not very effective in modeling their structure. However, loops are often involved in protein function, hence inferring their structure is important for predicting protein structure as well as function.We describe a method, LoopIng, based on the Random Forest automated learning technique, which, given a target loop, selects a structural template for it from a database of loop candidates. Compared to the most recently available methods, LoopIng is able to achieve similar accuracy for short loops (4-10 residues) and significant enhancements for long loops (11-20 residues). The quality of the predictions is robust to errors that unavoidably affect the stem regions when these are modeled. The method returns a confidence score for the predicted template loops and has the advantage of being very fast (on average: 1 min/loop).www.biocomputing.it/loopinganna.tramontano@uniroma1.itSupplementary data are available at Bioinformatics online.

  4. PhysTrack’: a Matlab based environment for video tracking of kinematics in the physics laboratory

    Umar Hassan, Muhammad; Sabieh Anwar, Muhammad

    2017-07-01

    In the past two decades, several computer software tools have been developed to investigate the motion of moving bodies in physics laboratories. In this article we report a Matlab based video tracking library, PhysTrack, primarily designed to investigate kinematics. We compare PhysTrack with other commonly available video tracking tools and outline its salient features. The general methodology of the whole video tracking process is described with a step by step explanation of several functionalities. Furthermore, results of some real physics experiments are also provided to demonstrate the working of the automated video tracking, data extraction, data analysis and presentation tools that come with this development environment. We believe that PhysTrack will be valuable for the large community of physics teachers and students already employing Matlab.

  5. Comment on “Temperature dependence of atomic vibrations in mono-layer graphene” [J. Appl. Phys. 118, 074302 (2015)

    Susi, T.; Kotakoski, J.

    2016-01-01

    In an interesting recent study [Allen et al., J. Appl. Phys. 118, 074302 (2015)] (see also their Erratum [Allen et al., J. Appl. Phys. 118, 159902 (2015)]), Allen and co-workers measured the mean square amplitudes of graphene lattice vibrations between 100 and 1300 K and used a simplified theoretical approximation for the acoustic phonon modes to evaluate the maximum phonon wavelengths supported by the lattice. By fitting their data using the smallest wave-vector as the fitting parameter, they found this to be significantly smaller than the physical size of the graphene crystallites

  6. Origin of samples of Cannabis sativa through insect fragments associated with compacted hemp drug in South America

    Marcos Patrício Macedo

    2013-06-01

    Full Text Available Origin of samples of Cannabis sativa through insect fragments associated with compacted hemp drug in South America. Insects associated with a seizure of Cannabis sativa L. may indicate the origin of the illicit drug. Nevertheless, no work regarding this subject has been previously published for South America. In the present investigation, seven kilograms of vegetal material (C. sativa were inspected for insect fragments. Three species were identified and used to test the origin of the seizure of cannabis plant material: Euschistus heros (Fabricius, 1794, Thyanta perditor (Fabricius, 1794 (Heteroptera, Pentatomidae, and Cephalotes pusillus (Klug, 1824 (Hymenoptera, Formicidae. These insect species restricted the geographic origin of the drug to the Neotropical region, and their distribution patterns showed an overlap of the State of Mato Grosso (Brazil, Argentina, and Paraguay. Based on this information, two of the three major C. sativa growing areas in South America were excluded: (1 the Colombian territory and (2 northeastern Brazil.

  7. Development of a new extraction technique and HPLC method for the analysis of non-psychoactive cannabinoids in fibre-type Cannabis sativa L. (hemp).

    Brighenti, Virginia; Pellati, Federica; Steinbach, Marleen; Maran, Davide; Benvenuti, Stefania

    2017-09-05

    The present work was aimed at the development and validation of a new, efficient and reliable technique for the analysis of the main non-psychoactive cannabinoids in fibre-type Cannabis sativa L. (hemp) inflorescences belonging to different varieties. This study was designed to identify samples with a high content of bioactive compounds, with a view to underscoring the importance of quality control in derived products as well. Different extraction methods, including dynamic maceration (DM), ultrasound-assisted extraction (UAE), microwave-assisted extraction (MAE) and supercritical-fluid extraction (SFE) were applied and compared in order to obtain a high yield of the target analytes from hemp. Dynamic maceration for 45min with ethanol (EtOH) at room temperature proved to be the most suitable technique for the extraction of cannabinoids in hemp samples. The analysis of the target analytes in hemp extracts was carried out by developing a new reversed-phase high-performance liquid chromatography (HPLC) method coupled with diode array (UV/DAD) and electrospray ionization-mass spectrometry (ESI-MS) detection, by using an ion trap mass analyser. An Ascentis Express C 18 column (150mm×3.0mm I.D., 2.7μm) was selected for the HPLC analysis, with a mobile phase composed of 0.1% formic acid in both water and acetonitrile, under gradient elution. The application of the fused-core technology allowed us to obtain a significant improvement of the HPLC performance compared with that of conventional particulate stationary phases, with a shorter analysis time and a remarkable reduction of solvent usage. The analytical method optimized in this study was fully validated to show compliance with international requirements. Furthermore, it was applied to the characterization of nine hemp samples and six hemp-based pharmaceutical products. As such, it was demonstrated to be a very useful tool for the analysis of cannabinoids in both the plant material and its derivatives for

  8. Effects of hemp (Cannabis sativa L.) seed oil press-cake and decaffeinated green tea leaves (Camellia sinensis) on functional characteristics of gluten-free crackers.

    Radočaj, Olga; Dimić, Etelka; Tsao, Rong

    2014-03-01

    A mixture, simplex centroid, 2 components experimental design was used to evaluate the addition of hemp seed oil press-cake and decaffeinated green tea leaves, as functional ingredients to assess nutritional characteristics and antioxidant properties of gluten-free crackers. All samples with added hemp flour had much better nutritional qualities than the brown rice flour crackers in terms of higher protein, crude fibers, minerals, and essential fatty acids content. Likewise, all samples with added decaffeinated green tea leaves had much better antioxidant properties than crackers with no added green tea leaves. All crackers with added hemp flour had a significantly increased fiber content (39% to 249%) and decreased carbohydrate content (8.4% to 42.3%), compared to the brown rice flour crackers. All samples had antioxidant properties, even without the addition of green tea leaves. Optimization of the responses was conducted based on the maximized values for protein, fibers, omega-3 fatty acids content, as well as for the antioxidant activity and overall score. The suggested values for the addition of the hemp oil press-cake was 20% (total flour weight) with 4 g of decaffeinated green tea leaves that would provide protein content of 14.1 g/100 g; fibers content of 8.4 g/100 g; omega-3 fatty acids content of 3.2 g/100 g; antioxidant activity measured via 2,2-diphenyl-1-picrylhydrazyl value of 30.3 μmol TE/g d.w.; and an overall score of 8.9. This formulation has demonstrated potential application in the baking industry and marketing of these gluten-free crackers as a value-added functional product. Hemp seed oil press-cake as a by-product of cold-pressed oil processing and brown rice flour were used to design a functional gluten-free snack-type product-savory crackers. All crackers were high in minerals, fibers, and omega-3 fatty acids with a desirable omega-6/omega-3 fatty acids ratio. Green tea leaves were added to improve antioxidant activity, which greatly

  9. Biocompatible nanoemulsions based on hemp oil and less surfactants for oral delivery of baicalein with enhanced bioavailability

    Yin J

    2017-04-01

    Full Text Available Juntao Yin,1,* Cuiyu Xiang,1,* Peiqing Wang,1 Yuyun Yin,2 Yantao Hou3 1Department of Pharmaceutics, Huaihe Hospital Affiliated to Henan University, Kaifeng, 2Department of Physiochemical Analysis, Henan Provincial Institute for Food and Drug Control, Zhengzhou, 3Department of Pharmaceutical Engineering, Henan Vocational College of Applied Technology, Kaifeng, People’s Republic of China *These authors contributed equally to this work Abstract: Baicalein (BCL possesses high pharmacological activities but low solubility and stability in the intestinal tract. This study aimed to probe the potential of nanoemulsions (NEs consisting of hemp oil and less surfactants in ameliorating the oral bioavailability of BCL. BCL-loaded NEs (BCL-NEs were prepared by high-pressure homogenization technique to reduce the amount of surfactants. BCL-NEs were characterized by particle size, entrapment efficiency (EE, in vitro drug release, and morphology. Bioavailability was studied in Sprague-Dawley rats following oral administration of BCL suspensions, BCL conventional emulsions, and BCL-NEs. The obtained NEs were ~90 nm in particle size with an EE of 99.31%. BCL-NEs significantly enhanced the oral bioavailability of BCL, up to 524.7% and 242.1% relative to the suspensions and conventional emulsions, respectively. BCL-NEs exhibited excellent intestinal permeability and transcellular transport ability. The cytotoxicity of BCL-NEs was documented to be low and acceptable for oral purpose. Our findings suggest that such novel NEs and preparative process provide a promising alternative to current formulation technologies and suitable for oral delivery of drugs with bioavailability issues. Keywords: baicalein, nanoemulsions, biocompatibility, high-pressure homogenization, hemp oil, bioavailability

  10. Comment on ``On the Crooks fluctuation theorem and the Jarzynski equality'' [J. Chem. Phys. 129, 091101 (2008)

    Adib, Artur B.

    2009-06-01

    It has recently been argued that a self-consistency condition involving the Jarzynski equality (JE) and the Crooks fluctuation theorem (CFT) is violated for a simple Brownian process [L. Y. Chen, J. Chem. Phys.129, 091101 (2008)]. This note adopts the definitions in the original formulation of the JE and CFT and demonstrates the contrary.

  11. Comment on : "A novel approach for solving the Fisher equation using Exp-function method" [Phys. Lett. A 372 3836

    Kudryashov, Nikolai A.

    2009-01-01

    Using Exp-function method Ozis and Koroglu [T. Ozis, C. Koroglu, Phys. Lett. A 372 (2008) 3836] have found exact "solutions" of the Fisher equation. In this comment we demonstrate that all these solutions do not satisfy the Fisher equation. The efficiency of application of Exp-function method to

  12. Comments on ''theory of dissipative density-gradient-driven turbulence in the tokamak edge'' [Phys. Fluids 28, 1419 (1985)

    Krommes, J.A.

    1985-11-01

    The author critiques the model of tokamak edge turbulence by P.W. Terry and P.H. Diamond (Phys. Fluids 28, 1419, 1985). The critique includes a discussion of the physical basis, consistency and quantitative accuracy of the Terry-Diamond model. 19 refs

  13. The analysis of senior high school students' physics HOTS in Bantul District measured using PhysReMChoTHOTS

    Istiyono, Edi

    2017-08-01

    The purpose of this research is to describe the results of higher order thinking skills in physics (PhysHOTS) measurement including: (1) percentage of PhysHOTS level and (2) percentage of the domination of response in the category of students in each analyzing, evaluating, and creating skill. There were 404 10th grade students in Bantul District as the respondents of this research. The instrument used for measurement was PhysReMChoTHOTS. It was divided into two sets consisting of 44 items and including 8 anchor items stated valid by a Physicist, Physics Education Expert, and Physics Education Measurement Expert. The instrument was fit to PCM. The reliability coefficient of this test is 0.71, while the difficulty index of the items ranges from -0.61 to 0.51. The results of the measurement show that: (1) The percentage of each category of PhysHOTS for the 10th grade students in Bantul District for the very low, low, medium, high, and very high category is 4.75 %, 40.30 %, 33.45 %, 19.50 %, and 2.00 %, respectively; and (2) The order in analyzing skills, starts from the weakest, is attributing, differentiating and organizing. The order in evaluating skills, starts from the weakest, is critiquing and checking. Meanwhile, the order in creating skills, starts from the weakest, is producing, planning, and generating.

  14. Mapping the social impacts of small dams: The case of Thailand's Ing River basin.

    Fung, Zali; Pomun, Teerapong; Charles, Katrina J; Kirchherr, Julian

    2018-05-24

    The social impacts of large dams have been studied extensively. However, small dams' social impacts have been largely neglected by the academic community. Our paper addresses this gap. We examine the social impacts of multiple small dams in one upstream and one downstream village in Thailand's Ing River basin. Our research is based on semi-structured interviews with beneficiaries, government and NGOs. We argue that small dams' social impacts are multi-faceted and unequal. The dams were perceived to reduce fish abundance and provide flood mitigation benefits. Furthermore, the dams enabled increased access to irrigation water for upstream farmers, who re-appropriated water via the dams at the expense of those downstream. The small dams thus engendered water allocation conflicts. Many scholars, practitioners and environmentalists argue that small dams are a benign alternative to large dams. However, the results of our research mandate caution regarding this claim.

  15. Spre[ing amelanotic malignant melanoma: A rare differential diagnosis with tumors of the glandula submandibularis

    Ehrenberg, C.; Helmberger, H.

    1998-01-01

    The case reported emphasizes the importance of immediate performance of imaging scans in case of the slightest suspicion that clinical symptoms might indicate malignancy of a detected lesion. Despite the superficially only marginal macroscopic findings, MR imaging as well as the CT scans revealed an [vanced, malignant process that h[ been spre[ing. Particularly the soft tissue differential diagnosis obtained with MRI yields the information required for diagnostic characterization of the space occupying tumor mass. It will however be necessary in any case to verify the diagnosis by biopsy or extirpation and cytologic examination of tissue, as the imaging methods do not always unambigiously reveal the malignant dignity of the tumor. (orig./CB) [de

  16. Techniques de l’ingénieur, a long-awaited resource

    GS Department

    2009-01-01

    Since 1 August 2009, a new online resource Les techniques de l’Ingénieur has been available at CERN: and its corpus of over 4,000 articles covering 11 disciplines is now accessible from your computer. This multidisciplinary database covers many subjects ranging from mechanics to the environment. The articles are written by scientific experts recognized in their fields. Online access includes the archives since 1946; it also serves to monitor the latest trends and innovations, and new industry products. This database is therefore both a valuable resource in past and present scientific and technological information and a tool to observe future developments. Anyone can create a free account on this resource. This account is needed to configure your personal alerts and download pdf files of the documents you are interested in. More information on the Library website. Direct access to the database

  17. Effect of Different Levels of Organic and Chemical Fertilizers on Yield, Harvest Index and Extract Percentage of Hemp (Cannabis sativa L.

    S Laleh

    2018-02-01

    Full Text Available Introduction Hemp is a dioecious and annual plant. The most important use to this plant is in the food, drug, and natural fibers. Proper fertilizer management for a medicinal plant species is important for increasing its yield and maintaining the quality of active principles. Sustainable farming is on the basis of natural fertilizer application with the aim of decreasing chemical fertilizers. Various studies show that application of animal manure with chemical fertilizers (as N, P and … have positive effects on soil structure, microbial population, soil fertility, growth and yield of plant with the aim of protecting the environment. Therefore, the present study was under taken to evaluate the effect of organic amendments enriched with chemical fertilizers of nitrogen and phosphorus on yield and extract of hemp. Materials and Methods To study the effect of different levels of animal manure and chemical fertilizers, a split factorial experiment, based on complete randomized blocks design with three replications was conducted at the research Farm of Faculty of agriculture, University of Birjand, during the growing season 2014-2015. Experimental factors were animal manure (0, 10, 20 and 30 t. ha-1well rotted farmyard manure as the main plot, and factorial application of three levels of N (0, 50 and 100 kg N ha-1 as Urea with two levels of P (0 and 80 kg P2O5 ha-1 as triple and P was superphosphate as sub-plot. Animal manure, P and half of the N fertilizer were applied before planting and the other half of N were applied by top dressing. Hemp were planted 5 may on rows 60 cm apart, with 30 cm distance between each hemp on row, at the depth of 3-4 cm. Measured traits included leaf, stem and seed weights, stem height and diameter, 1000 seed weight, and leaves extract percentage per square meter in sub-plot for female plants of hemp. Also percentage of female plants calculated per sub-plot. Finally, all variables were analyzed by SAS software (V. 9

  18. Raman spectroscopy for the characterization of different fractions of hemp essential oil extracted at 130 °C using steam distillation method

    Hanif, Muhammad Asif; Nawaz, Haq; Naz, Saima; Mukhtar, Rubina; Rashid, Nosheen; Bhatti, Ijaz Ahmad; Saleem, Muhammad

    2017-07-01

    In this study, Raman spectroscopy along with Principal Component Analysis (PCA) is used for the characterization of pure essential oil (pure EO) isolated from the leaves of the Hemp (Cannabis sativa L.,) as well as its different fractions obtained by fractional distillation process. Raman spectra of pure Hemp essential oil and its different fractions show characteristic key bands of main volatile terpenes and terpenoids, which significantly differentiate them from each other. These bands provide information about the chemical composition of sample under investigation and hence can be used as Raman spectral markers for the qualitative monitoring of the pure EO and different fractions containing different active compounds. PCA differentiates the Raman spectral data into different clusters and loadings of the PCA further confirm the biological origin of the different fractions of the essential oil.

  19. Determination of cannabinoids in hemp nut products in Taiwan by HPLC-MS/MS coupled with chemometric analysis: quality evaluation and a pilot human study.

    Chang, Chih-Wei; Tung, Chun-Wei; Tsai, Chin-Chuan; Wu, Yu-Tse; Hsu, Mei-Chich

    2017-06-01

    Hemp nuts are mature cannabis seeds obtained after shelling and that are commonly used in traditional Chinese medicine for treating functional constipation. In this work, we screened hemp nut products, classified them, and verified the legality of consuming them. A total of 18 products were purchased from Taiwan, China, and Canada. Validated high-performance liquid chromatography with tandem mass spectrometry methods were developed for analyzing the cannabinoid (i.e., Δ 9 -tetrahydrocannabinol (THC), cannabidiol (CBD), and cannabinol) content of the products and the concentration of urinary 11-nor-9-carboxy-THC. Chemometric techniques, namely hierarchical clustering analysis (HCA) and principal component analysis (PCA), were applied for rapidly classifying 11 concentrated powder products in Taiwan. A pilot human study comprising single and multiple administrations of a product with 1.5 µg/g of THC was conducted to examine the urinary 11-nor-9-carboxy-THC concentration. Through optimization of 3 2 full factorial design, using 60% isopropanol as the extraction solvent exhibited the highest yield of cannabinoids and was applied as the optimal condition in further analysis. The results of HCA and PCA on quality evaluation were in good agreement; however, the tested products possessed distinct CBD-to-THC ratios which ranged widely from 0.1:1 to 46.8:1. Particularly, the products with CBD-to-THC ratios higher than 1:1 were the majority in Taiwan. Our data suggested that all the tested hemp nut products met the Taiwan restriction criterion of 10 µg/g of THC. We propose a usual consumption amount of hemp nut products in Taiwan would unlikely to violate the cut-off point of 15 ng/mL of urinary 11-nor-9-carboxy-THC. Copyright © 2016 John Wiley & Sons, Ltd. Copyright © 2016 John Wiley & Sons, Ltd.

  20. 76 FR 54770 - Public Meeting: Notification by Capital One Financial Corporation, McLean, VA, To Acquire ING...

    2011-09-02

    ... FEDERAL RESERVE SYSTEM Public Meeting: Notification by Capital One Financial Corporation, McLean, VA, To Acquire ING Bank, FSB, Wilmington, DE, and Indirectly To Acquire Shares of Sharebuilder... Reserve System. ACTION: Notice of public meeting. SUMMARY: Three public meetings will be held regarding...

  1. Queer(y)ing New Schooling Accountabilities through "My School": Using Butlerian Tools to Think Differently about Policy Performativity

    Gowlett, Christina

    2015-01-01

    This article takes the role of provocateur to "queer(y)" the rules of intelligibility surrounding new schooling accountabilities. Butler's work is seldom used outside the arena of gender and sexualities research. A "queer(y)ing" methodology is subsequently applied in a context very different to where it is frequently…

  2. Algõpetuse peajoon ja harupedagoogikad / Sirje Piht, Elve Voltein, Anne Uusen, Inge Timoštšuk

    2012-01-01

    Intervjuu Sirje Pihti ja Anne Uuseniga Tallinna Ülikooli algõpetuse osakonnast, Elve Volteiniga Tartu Ülikooli haridusteaduste instituudi õpetajate seminarist ja Inge Timoštšukiga Tallinna Ülikooli kasvatusteaduste instituudi pedagoogilise praktika keskusest

  3. La sauvegarde des grandes oeuvres de l'ingénierie du XXème siècle

    Graf, Franz

    2016-01-01

    Consacré à la sauvegarde des grandes oeuvres de l’ingénierie du XXe siècle, ce premier numéro des Cahiers du TSAM explore le devenir de certaines des plus remarquables et emblématiques structures en béton du siècle passé. A travers les fi gures d’héroïques constructeurs, il interroge l’héritage construit des ingénieurs, convoquant les plus audacieux d’entre eux (Freyssinet, Isler, Maillart, Nervi, Vierendeel, etc.). Alors que la sauvegarde de l’architecture du XXe siècle s’est récemment constituée en discipline à part entière, la préservation des ouvrages de l’ingénierie de cette période est encore balbutiante. Considérés trop souvent sous le seul point de vue de la sécurité ou de la maintenance, ces ouvrages s’avèrent parfois de véritables chefs-d’oeuvre, jalons d’un «art de l’ingénieur» à la frontière entre performance technique et beauté plastique. Ces cahiers sont donc l’occasion d’initier, à l’appui d’exemples et de projets de sauvegarde con...

  4. Mechanical characterisation of hybrid composite laminates based on basalt fibres in combination with flax, hemp and glass fibres manufactured by vacuum infusion

    Petrucci, R.; Santulli, C.; Puglia, D.; Sarasini, F.; Torre, L.; Kenny, J.M.

    2013-01-01

    Highlights: ► For the first time, hybrid laminates with three different fibres were produced. ► Concerns are confirmed on the brittleness of hybrid laminates with basalt fibre core. ► An optimal configuration (FHB) for flexural properties was singled out. ► Differences between tensile and flexural properties of hybrids were identified. ► In general, the specific mechanical properties of the hybrids are quite high. - Abstract: This work concerns the production by vacuum infusion and the comparison of the properties of different hybrid composite laminates, based on basalt fibre composites as the inner core, and using also glass, flax and hemp fibre laminates to produce symmetrical configurations, all of them with a 21–23% fibre volume, in an epoxy resin. The laminates have been subjected to tensile, three-point flexural and interlaminar shear strength tests and their fracture surfaces have been characterised by scanning electron microscopy. The mechanical performance of all the hybrid laminates appears superior to pure hemp and flax fibre reinforced laminates and inferior to basalt fibre laminates. Among the hybrids, the best properties are offered by those obtained by adding glass and flax to basalt fibre reinforced laminates. Scanning electron microscopy (SEM) observation of hybrid laminates showed the diffuse presence of fibre pull-out in hemp and flax fibre reinforced layers and a general trend of brittle failure

  5. Linnagaleriis avati ülevaatenäitus 'Pärnu sügis 98' / Leonhard Lapin, Inge Teder ; interv. Tiiu Leis

    Lapin, Leonhard, 1947-

    1998-01-01

    14. okt avati Pärnu Linnagaleriis Pärnu kunstnike maalinäitus, töid valisid Kunstiakadeemia õppejõud Leonhard Lapin ja Inge Teder ning Linnagalerii nõukogu liige Feliks Krapp. Intervjuu L. Lapini ja Inge Tederiga.

  6. Response to 'Comment on 'Ultrafast electron optics: Propagation dynamics of femtosecond electron packets'' [J. Appl. Phys. 94, 803 (2003)

    Siwick, Bradley J.; Dwyer, Jason R.; Jordan, Robert E.; Miller, R. J. Dwayne

    2003-01-01

    In this reply, we address the main issues raised by Qian et al. regarding our recent article [J. Appl. Phys. 92, 1643 (2002)]. In particular, we reiterate the approximations used in the development of the mean-field model and demonstrate how the form used for the on-axis potential is applicable to the study of femtosecond electron packet propagation and is not in need of correction. We also repeat our assertion that the one-dimensional (1-D) fluid model developed by Qian et al. [J. Appl. Phys. 91, 462 (2002)] overestimates space-charge-induced pulse broadening and is in qualitative disagreement with femtosecond electron packet propagation dynamics. The key differences between the mean-field and 1-D fluid model are discussed and their range of applicability is clarified

  7. Comment on “Maxwell's equations and electromagnetic Lagrangian density in fractional form” [J. Math. Phys. 53, 033505 (2012)

    Rabei, Eqab M.; Al-Jamel, A.; Widyan, H.; Baleanu, D.

    2014-01-01

    In a recent paper, Jaradat et al. [J. Math. Phys. 53, 033505 (2012)] have presented the fractional form of the electromagnetic Lagrangian density within the Riemann-Liouville fractional derivative. They claimed that the Agrawal procedure [O. P. Agrawal, J. Math. Anal. Appl. 272, 368 (2002)] is used to obtain Maxwell's equations in the fractional form, and the Hamilton's equations of motion together with the conserved quantities obtained from fractional Noether's theorem are reported. In this comment, we draw the attention that there are some serious steps of the procedure used in their work are not applicable even though their final results are correct. Their work should have been done based on a formulation as reported by Baleanu and Muslih [Phys. Scr. 72, 119 (2005)

  8. Reply to ''Comment on 'Transmit versus receive gains for microwave dish antennas' [J. Appl. Phys. 54, 3528 (1983)]''

    Richter, J.L.

    1985-01-01

    A. W. Love points out three alleged errors in our paper [J. Appl. Phys. 54, 3528 (1983)]. We agree that he is correct with regard to the second and third issues, but the first and perhaps most important point is correct. This regards the inequality of transmit and receive patterns of microwave antennas. The standard proof of equality of the patterns, cited by A. W. Love, is shown to be incorrect

  9. Comment on "Total Negative Refraction in Real Crystals for Ballistic Electrons and Light" (Phys. Rev. Lett. 91, 157404 (2003))

    Yau, H. -F.; Liu, J. -P.; Ke, B.; Kuo, C. -H.; Ye, Z.

    2003-01-01

    Recently, Zhang et al. (Phys. Rev. Lett. 91, 157404 (2003)) have demonstrated that an amphoteric refraction, i. e. both positive and negative refraction, may prevail at the interface of two uniaxial anisotropic crystals when their optical axes are in different directions. The authors subsequently made a correspondence between such a refraction with the negative refraction expected for Left Handed Materials (LHMs). Here we comment that the amphoteric refraction can be observed even with one un...

  10. Retraction: On the origin of power-law distributions in systems with constrained phase space [Condens. Matter Phys., 2013, vol. 16, 43802

    Editorial Board

    2014-03-01

    Full Text Available The article Condens. Matter Phys., 2013, vol. 16, 43802 ( DOI:10.5488/CMP.16.43802 has been retracted by the decision of the Editorial Board. There is a significant overlap with an article: Phys. Rev. E, 2006, vol. 74, 036120 ( DOI:10.1103/PhysRevE.74.036120. Appologies are offered to readers of the journal that this was not detected during the submission process.

  11. Effects of steam pretreatment and co-production with ethanol on the energy efficiency and process economics of combined biogas, heat and electricity production from industrial hemp

    2013-01-01

    Background The study presented here has used the commercial flow sheeting program Aspen Plus™ to evaluate techno-economic aspects of large-scale hemp-based processes for producing transportation fuels. The co-production of biogas, district heat and power from chopped and steam-pretreated hemp, and the co-production of ethanol, biogas, heat and power from steam-pretreated hemp were analysed. The analyses include assessments of heat demand, energy efficiency and process economics in terms of annual cash flows and minimum biogas and ethanol selling prices (MBSP and MESP). Results Producing biogas, heat and power from chopped hemp has the highest overall energy efficiency, 84% of the theoretical maximum (based on lower heating values), providing that the maximum capacity of district heat is delivered. The combined production of ethanol, biogas, heat and power has the highest energy efficiency (49%) if district heat is not produced. Neither the inclusion of steam pretreatment nor co-production with ethanol has a large impact on the MBSP. Ethanol is more expensive to produce than biogas is, but this is compensated for by its higher market price. None of the scenarios examined are economically viable, since the MBSP (EUR 103–128 per MWh) is higher than the market price of biogas (EUR 67 per MWh). The largest contribution to the cost is the cost of feedstock. Decreasing the retention time in the biogas process for low solids streams by partly replacing continuous stirred tank reactors by high-rate bioreactors decreases the MBSP. Also, recycling part of the liquid from the effluent from anaerobic digestion decreases the MBSP. The production and prices of methane and ethanol influence the process economics more than the production and prices of electricity and district heat. Conclusions To reduce the production cost of ethanol and biogas from biomass, the use of feedstocks that are cheaper than hemp, give higher output of ethanol and biogas, or combined production with

  12. CeasIng Cpap At standarD criteriA (CICADA): predicting a successful outcome.

    Yin, Yue; Broom, Margaret; Wright, Audrey; Hovey, Donna; Abdel-Latif, Mohamed E; Shadbolt, Bruce; Todd, David A

    2016-01-01

    This is a retrospective analysis of a multicentre randomised controlled trial (RCT) where we concluded that CeasIng Cpap At standerD criteriA (CICADA) in premature babies (PBs) CPAP. To identify factors that may influence the number of attempts to cease CPAP, we reviewed the records of 50 PBs from the RCT who used the CICADA method. PBs were grouped according to number of attempts to cease CPAP (fast group ≤2 attempts and slow group >2 attempts to cease CPAP). There were 26 (fast group) and 24 (slow group) PBs included in the analysis. Results showed significant differences in mean GA (27.8 ± 0.3 vs 26.9 ± 0.3 [weeks ± SE], p = 0.03) and birth weight ([Bwt]; 1080 ± 48.8 vs 899 ± 45.8 [grams ± SE], p = 0.01) between groups. Significantly fewer PBs in the fast group had a patent ductus arteriosus (PDA) compared to the slow group (5/26 (19.2%) vs 13/24 (54.2 %), p = 0.02). Bwt was a significant negative predictor of CPAP duration (r = -0.497, p = 0.03) and CPAP ceasing attempts (r = -0.290, p = 0.04). PBs with a higher GA and Bwt without a PDA ceased CPAP earlier using the CICADA method. Bwt was better than GA for predicting CPAP duration and attempts to cease CPAP. Our previous studies showed that CeasIng Cpap At standarD criteriA (CICADA) significantly reduces CPAP time, oxygen requirements and caffeine use. Some PBs however using the CICADA method required >2 attempts to cease CPAP ('slow CICADA' group). PBs in the 'fast CICADA' group (CPAP) (a) have longer gestational age and higher birth weight, (b) shorter mechanical ventilation and (c) lower incidence of patent ductus arteriosus. Attempts to cease CPAP decreased by 0.5 times per 1 week increase in GA and 0.3 times per 100-g increase in birth weight for PBs <30 weeks gestation.

  13. Comment on “Theoretical analysis of high-field transport in graphene on a substrate” [J. Appl. Phys. 116, 034507 (2014)

    Tan, Michael L. P.; Arora, Vijay K.

    2014-01-01

    In a recent article, Serov et al. [J. Appl. Phys. 116, 034507 (2014)] claim: “This study represents the first time that the high-field behavior in graphene on a substrate was investigated taking into account intrinsic graphene properties,” ignoring the most recent anisotropic distribution function [V. K. Arora et al., J. Appl. Phys. 112, 114330 (2012)] also published in J. Appl. Phys., targeting the same experimental data [V. E. Dorgan et al., Appl. Phys. Lett. 97, 082112 (2010)]. The claim of Serov et al. of being first is refuted and many shortcomings of the hydrodynamic model for a highly quantum and degenerate graphene nanolayer are pointed out

  14. The effect of plant density and nitrogen fertilizer on light interception and dry matter yield in hemp (Cannabis sativa L.

    mohamad reza asghari poor

    2009-06-01

    Full Text Available The effect of plant density and nitrogen fertilizer on canopy light interception and on flowering was investigated in hemp (Cannabis sativa L. cv. ‘Kompolti’ Crop grown at initial densities of 50, 150 and 250 plants/m2 at the Mashhad and 30, 90 and 150 plants/m2 at the Shirvan. Nitrogen fertilizer was applied before and 45 days after sowing at a rates of 50 and 200 kg/ha at the Mashhad, and 50, 150 and 250 kg/ha at the Shirvan. Rate of canopy development increased with increasing plant density and nitrogen fertilizer in both sites. At the Mashhad, interception of 90% of light was attained at 380 to 665 degree days (base 2°C from emergence for the crop grown at different densities. At Shirvan, rate of canopy development was slower. Interception of 90% of light was attained at 586 degree days from emergence for the crop grown at 30 plants/m2 and at 712 degree days for the crop grown at 150 plants/m2, probably as a result of cold weather. Nitrogen fertilizer in a similar way as plant density increased light interception. Maximum light interception did not depend on plant density and nitrogen fertilizer and was about 95%. In both sites, the flowering date was later with increasing plant density. Dates of 75% flowering for the initial densities of 50, 150 and 250 plants/m2 in Mashhad and 30, 90 and 150 plants/m2 in Shirvan were, respectively 26 August, 1, 6, 6, 11 and 12 September. Independent of plant density, canopy light interception started to decline at about 150 degree days after flowering, reaching 58 to 75% at about 700 degree days post-flowering. Morphological characteristics at both sites were highly correlated with plant sexual, plant population and nitrogen fertilizer. Highest stem, leaf and inflorescence yield were obtained in Mashhad at 250 plant/m-2 and in Shirvan at 150 plant m-2 when 200 kg N ha-1 in Mashhad and 250 kg N/ha in Shirvan was used. Above ground dry matter increased at both sites with increasing plant density and

  15. The influence of the type of lime on the hygric behaviour and bio-receptivity of hemp lime composites used for rendering applications in sustainable new construction and repair works.

    Arizzi, Anna; Brümmer, Monika; Martín-Sanchez, Inés; Cultrone, Giuseppe; Viles, Heather

    2015-01-01

    The benefits of using sustainable building materials are linked not only to the adoption of manufacturing processes that entail reduced pollution, CO2 emissions and energy consumption, but also to the onset of improved performance in the building. In particular, hemp-lime composite shows low shrinkage and high thermal and acoustic insulating properties. However, this material also shows a great ability to absorb water, an aspect that can turn out to be negative for the long-term durability of the building. For this reason, the hygric properties of hemp-based composites need to be studied to ensure the correct use of this material in construction and repair works. The water absorption, drying and transpirability of hemp composites made with aerial (in the form of dry powder and putty) and hydraulic limes were investigated here and related to the microbial growth induced by the water movements within the material. Results show that hemp-natural hydraulic lime mixes exhibit the highest transpirability and drying rate, the lowest water absorption by immersion and capillary uptake and the least intense microbial attack and chromatic change. A microscopical study of the hemp shives also related their great ability to absorb water to the near-irreversible swelling of their structure under dry-wet conditions.

  16. Enzymatic biosensors based on ingá-cipó peroxidase immobilised on sepiolite for TBHQ quantification.

    Regina de Oliveira, Tássia; Grawe, Gregory Ferreira; Moccelini, Sally Katiuce; Terezo, Ailton J; Castilho, Marilza

    2014-05-07

    Sepiolite clay mineral was used as a support for the immobilisation of the peroxidase enzyme from ingá-cipó (Inga edulis Mart.) and was used with graphite powder, multi-walled carbon nanotubes (CNTs), mineral oil, and nafion 0.5% (v/v) in the development of a new biosensor for the determination of the antioxidant tert-butylhydroquinone (TBHQ) by square-wave voltammetry (SWV). For the optimisation and application of the biosensor, several parameters were investigated to determine the optimum experimental conditions using SWV. The best performance was obtained using a 0.1 mol L(-1) phosphate buffer solution (pH 7.0), 4.0 × 10(-4) mol L(-1) hydrogen peroxide, a frequency of 50 Hz, a pulse amplitude of 60 mV, and a scan increment of 6 mV. The biosensor showed good repeatability and reproducibility and remained stable for a period of 20 weeks. The analytical curve revealed a linear response range of 1.65 to 9.82 mg L(-1) (r = 0.994) with detection and quantification limits of 0.41 and 1.25 mg L(-1). A recovery study of TBHQ in salad dressing samples yielded values from 99.6-104.8%. The proposed biosensor was successfully used for the determination of TBHQ in commercial salad dressing samples, giving a relative error of 5.4% in relation to the comparative method (chromatographic).

  17. Dr Oen Boen Ing Patriot doctor, social activist, and doctor of the poor

    Ravando Lie

    2017-05-01

    Full Text Available This article examines the efforts and achievements of Oen Boen Ing, a Tionghoa doctor, to improve the quality of health of the poorer inhabitants of Surakarta. Dr Oen played an important role in five different periods: Dutch colonialism, the Japanese occupation, the Indonesian revolution, Soekarno’s regime, and Suharto’s New Order. Known for being a benevolent doctor, activist, and patriot of the revolution during his life-time, Dr Oen also gave medical assistance to the needy, which famously earned him the accolade of “doctor of the poor”. During the Indonesian revolution, Dr Oen assisted the Student Soldiers (Tentara Pelajar and afterwards was appointed the member of Supreme Advisory Council (Dewan Pertimbangan Agung/DPA by Soekarno in 1949. As a benevolent doctor and activist, Dr Oen is remembered for founding the Panti Kosala Hospital which was renamed to perpetuate his name on 30 October 1983, exactly a year after his passing. When he died, thousands of peoples gathered to pay their final respects to the doctor. He was honoured with a ceremony conducted in the Mangkunegaran Palace. Dr Oen’s name will be eternally respected, especially in Surakarta.

  18. The plays of Lillian Hellman, Clifford Odets and William Inge on Slovene stages

    Mateja Slunjski

    2002-12-01

    Full Text Available After the Second World War, Slovene theatres started to include in their repertoires more and more American authors and their plays. Their choice were varied, from serious dramas by Eugene O'Neill, Tennessee Williams and Arthur Miller, to comedies by Norman Krasna and John Van Druten dependant mostly on the availability of the texts. In the immediate postwar years the theatres liked to present playwrights with progressive ideas in their plays, such as Lillian Hellman and her "The Little Foxes", which was successfully produced at three Slovene theatres, while her "The Children's Hour" received negative reviews. In the fifties, three theatres chose two plays by Clifford Odets, "Golden Boy" and "Country Girl", mainly because of his socially critical ideas and his admiration of humanity. His plays were rather well received; however, the critics doubted his literary genius. William Inge and his plays, "Come Back, Little Sheba", "Picnic" and "Bus Stop", chosen mainly because of the warmth with which the author depicted the tragedy and the beauty of life, were produced at three Slovene theatres. The author received rather wide-ranging opinions from the critics. Some thought him to be an unoriginal depicter of dull American life, while others praised his lyricism and new dramatic techniques.

  19. Running injuries and associated factors in participants of ING Taipei Marathon.

    Chang, Wei-Ling; Shih, Yi-Fen; Chen, Wen-Yin

    2012-08-01

    To investigate the distribution of lower extremity running injuries and their associated factors. Descriptive and exploratory study. 1004 participants of the 2005 ING Taipei International Marathon. We used a self-developed questionnaire to collect data of previous running injuries and applied multivariate logistic regression modeling to examine relationships between these injuries and associated factors. Of the 893 valid questionnaires, 396 (44.4%) reported having previous lower extremity pain related to running. Knee joint pain was the most common problem (32.5%). Hip pain was associated with the racing group, training duration, and medial arch support. Use of knee orthotics (P = 0.002) and ankle braces (P = 0.007) was related to a higher rate of knee and ankle pain. Participants of the full marathon group who practiced on a synthetic track had a higher incidence of ankle pain. A training duration of >60 min was linked to an increased rate of foot pain (P = 0.003). Our data indicated that running injuries were associated with training duration and use of orthotics. Clinicians can use this information in treating or preventing running associated injuries and pain. Copyright © 2011 Elsevier Ltd. All rights reserved.

  20. SCFJFK is a bona fide E3 ligase for ING4 and a potent promoter of the angiogenesis and metastasis of breast cancer

    Yan, Ruorong; He, Lin; Li, Zhongwu; Han, Xiao; Liang, Jing; Si, Wenzhe; Chen, Zhe; Li, Lei; Xie, Guojia; Li, Wanjin; Wang, Peiyan; Lei, Liandi; Zhang, Hongquan; Pei, Fei; Cao, Dengfeng

    2015-01-01

    Loss of function/dysregulation of inhibitor of growth 4 (ING4) and hyperactivation of NF-κB are frequent events in many types of human malignancies. However, the molecular mechanisms underlying these remarkable aberrations are not understood. Here, we report that ING4 is physically associated with JFK. We demonstrated that JFK targets ING4 for ubiquitination and degradation through assembly of an Skp1–Cul1–F-box (SCF) complex. We showed that JFK-mediated ING4 destabilization leads to the hyperactivation of the canonical NF-κB pathway and promotes angiogenesis and metastasis of breast cancer. Significantly, the expression of JFK is markedly up-regulated in breast cancer, and the level of JFK is negatively correlated with that of ING4 and positively correlated with an aggressive clinical behavior of breast carcinomas. Our study identified SCFJFK as a bona fide E3 ligase for ING4 and unraveled the JFK–ING4–NF-κB axis as an important player in the development and progression of breast cancer, supporting the pursuit of JFK as a potential target for breast cancer intervention. PMID:25792601

  1. SCF(JFK) is a bona fide E3 ligase for ING4 and a potent promoter of the angiogenesis and metastasis of breast cancer.

    Yan, Ruorong; He, Lin; Li, Zhongwu; Han, Xiao; Liang, Jing; Si, Wenzhe; Chen, Zhe; Li, Lei; Xie, Guojia; Li, Wanjin; Wang, Peiyan; Lei, Liandi; Zhang, Hongquan; Pei, Fei; Cao, Dengfeng; Sun, Luyang; Shang, Yongfeng

    2015-03-15

    Loss of function/dysregulation of inhibitor of growth 4 (ING4) and hyperactivation of NF-κB are frequent events in many types of human malignancies. However, the molecular mechanisms underlying these remarkable aberrations are not understood. Here, we report that ING4 is physically associated with JFK. We demonstrated that JFK targets ING4 for ubiquitination and degradation through assembly of an Skp1-Cul1-F-box (SCF) complex. We showed that JFK-mediated ING4 destabilization leads to the hyperactivation of the canonical NF-κB pathway and promotes angiogenesis and metastasis of breast cancer. Significantly, the expression of JFK is markedly up-regulated in breast cancer, and the level of JFK is negatively correlated with that of ING4 and positively correlated with an aggressive clinical behavior of breast carcinomas. Our study identified SCF(JFK) as a bona fide E3 ligase for ING4 and unraveled the JFK-ING4-NF-κB axis as an important player in the development and progression of breast cancer, supporting the pursuit of JFK as a potential target for breast cancer intervention. © 2015 Yan et al.; Published by Cold Spring Harbor Laboratory Press.

  2. Effect of compatibilizing agents on the interface and mechanical behaviour of polypropylene/hemp bast fiber biocomposites

    Boruvka, M.; Lenfeld, P.; Brdlik, P.; Behalek, L.

    2015-07-01

    During the last years automotive industry has given a lot of attention to the biobased polymers that are sustainable and eco-friendly. Nevertheless fully green composites are currently too expensive for most applications. A viable solution and logical starting point at this material revolution lies in reinforced synthetic thermoplastics based on plant derived biodegradable fibers. Plant fibers (PF's) have potential to reduce weight of composite vehicle parts up to 40% compared with the main automotive composites filler, glass fibers (GF's). Production of GF's composites is much more energy intensive and polluting compared with growing, harvesting and preparing of PF's. The main disadvantage of PF's lies in combination of non-polar hydrophobic polymer matrix and polar hydrophilic fibers. This combination creates poor interface with low adhesion of both components. That implies poor wettability of fibres by polymer matrix and low mechanical properties of biocomposites. Therefore specific compatibilizing agents (Struktol SA1012, Fusabond P353, Smart + Luperox) were used in order to enhance compatibility between reinforcement and matrix. In this paper sets of biocomposite compounds were prepared by twin screw extrusion considering different type and weight percentage (wt. %) of compatibilizing agents, hemp bast fibres (HBF's) within ratio 20 (wt. %) and polypropylene (PP) THERMOFIL PP E020M matrix. Resulting compounds were than injection molded and tested samples were characterized by means of scanning electron microscopy (SEM) and mechanical testing.

  3. Biocompatible nanoemulsions based on hemp oil and less surfactants for oral delivery of baicalein with enhanced bioavailability.

    Yin, Juntao; Xiang, Cuiyu; Wang, Peiqing; Yin, Yuyun; Hou, Yantao

    2017-01-01

    Baicalein (BCL) possesses high pharmacological activities but low solubility and stability in the intestinal tract. This study aimed to probe the potential of nanoemulsions (NEs) consisting of hemp oil and less surfactants in ameliorating the oral bioavailability of BCL. BCL-loaded NEs (BCL-NEs) were prepared by high-pressure homogenization technique to reduce the amount of surfactants. BCL-NEs were characterized by particle size, entrapment efficiency (EE), in vitro drug release, and morphology. Bioavailability was studied in Sprague-Dawley rats following oral administration of BCL suspensions, BCL conventional emulsions, and BCL-NEs. The obtained NEs were ~90 nm in particle size with an EE of 99.31%. BCL-NEs significantly enhanced the oral bioavailability of BCL, up to 524.7% and 242.1% relative to the suspensions and conventional emulsions, respectively. BCL-NEs exhibited excellent intestinal permeability and transcellular transport ability. The cytotoxicity of BCL-NEs was documented to be low and acceptable for oral purpose. Our findings suggest that such novel NEs and preparative process provide a promising alternative to current formulation technologies and suitable for oral delivery of drugs with bioavailability issues.

  4. Ingénierie des compétences et scénarisation pédagogique

    Josianne Basque

    2007-01-01

    Full Text Available Cet article décrit un processus d’ingénierie éducative orienté compétences d’une activité d’autoévaluation et son intégration à un scénario pédagogique de cours à distance. Cette description est documentée par deux cas d’application dans un contexte de formation universitaire à distance. Le travail d’ingénierie utilise une approche en autogestion des compétences pour concevoir l’activité d’autoévaluation et l’instrumentaliser avec l’outil logiciel web d’autodiagnostic des compétences, appelé Compétences+. Cet acte d’ingénierie pédagogique porte l’attention de l’enseignant-concepteur sur une démarche centrée sur l’apprentissage dans une perspective d’autogestion des connaissances et de sa validation dans un usage en contexte isomorphe à une situation professionnelle réelle.

  5. A Functional Role for the Epigenetic Regulator ING1 in Activity-induced Gene Expression in Primary Cortical Neurons.

    Leighton, Laura J; Zhao, Qiongyi; Li, Xiang; Dai, Chuanyang; Marshall, Paul R; Liu, Sha; Wang, Yi; Zajaczkowski, Esmi L; Khandelwal, Nitin; Kumar, Arvind; Bredy, Timothy W; Wei, Wei

    2018-01-15

    Epigenetic regulation of activity-induced gene expression involves multiple levels of molecular interaction, including histone and DNA modifications, as well as mechanisms of DNA repair. Here we demonstrate that the genome-wide deposition of inhibitor of growth family member 1 (ING1), which is a central epigenetic regulatory protein, is dynamically regulated in response to activity in primary cortical neurons. ING1 knockdown leads to decreased expression of genes related to synaptic plasticity, including the regulatory subunit of calcineurin, Ppp3r1. In addition, ING1 binding at a site upstream of the transcription start site (TSS) of Ppp3r1 depends on yet another group of neuroepigenetic regulatory proteins, the Piwi-like family, which are also involved in DNA repair. These findings provide new insight into a novel mode of activity-induced gene expression, which involves the interaction between different epigenetic regulatory mechanisms traditionally associated with gene repression and DNA repair. Copyright © 2017 IBRO. Published by Elsevier Ltd. All rights reserved.

  6. Response to 'Comment on 'Pinch current limitation effect in plasma focus'' [Appl. Phys. Lett. 94, 076101 (2009)

    Lee, S.; Saw, S. H.

    2009-01-01

    The main point of the comment [Appl. Phys. Lett. 94, 076101 (2009)] is that Eq. (2) and consequentially Eq. (3) of the commented paper [Appl. Phys. Lett. 92, 021503 (2008)] require correction. The alternative equation suggested in the comment is derived using Kirchhoff's voltage rule. The comment consider only the energy distribution in the inductive components and the resultant equation confirms a progressive lowering of the I pinch /I peak ratio as the static inductance L 0 is reduced, lowering from 0.87 to 0.31 as L 0 is reduced from 100 to 5 nH according to the revised formula corresponding to Eq. (3), compared to 0.63-0.25 according to Eq. (3). This progressive lowering of the ratio I pinch /I peak due to the inductive energy distribution is one of two factors responsible for the pinch current limitation. The other factor is the progressive reduction in the L-C interaction time compared to the current dip duration denoted by δ cap in Eq. (2). The comment does not deal with δ cap at all; hence, its conclusion based on inductive energy distribution only is not useful, since in the low L 0 region when pinch current limitation begins to manifest, δ cap becomes more and more the dominant factor. In any case, the results of the paper do not depend on Eqs. (2) and (3), which are used in the paper only for illustrative purposes

  7. Association of Expanded Disability Status Scale and Cytokines after Intervention with Co-supplemented Hemp Seed, Evening Primrose Oils and Hot-natured Diet in Multiple Sclerosis Patients

    Behzad Baradaran

    2013-02-01

    Full Text Available Introduction: Multiple sclerosis (MS is an inflammatory demyelinating disease of the central nervous system (CNS. Because of limited efficacy and adverse side effects, identifying novel therapeutic and protective agents is important. The aim of this study is to examine the correlations between expanded disability status scale (EDSS and cytokines after intervention with co-supplemented hemp seed and evening primrose oils and hot-natured diet in patients with relapsing-remitting multiple sclerosis (RRMS. Methods: We studied a group of 23 patients with clinically definite RRMS, with EDSS<6 who received co-supplemented hemp seed and evening primrose oils with advising hot-natured diet. Clinically EDSS and immunological factors (plasma cytokines of IL-4, IFN-γ and IL-17 were assessed at baseline and after 6 months. Results: Mean follow-up was 180±2.9 days (N=23, 7 Male and 16 Females aged 25.0±7.5 years with disease duration 6.26±3.9 years. After 6 months, significant improvements in extended disability status score were found in the patients in agreement with decrease cytokines of IFN-γ and IL-17 and increase cytokines of IL-4. Clinical and immunological parameters showed improvement in the patients after the intervention. Conclusion: Our study shows that co-supplemented hemp seed and evening primrose oils with hot-natured diet can have beneficial effects in improving clinical symptoms in relapsing remitting MS patients and significant correlation was found between EDSS and immunological findings.

  8. Synthesis of vertical MnO{sub 2} wire arrays on hemp-derived carbon for efficient and robust green catalysts

    Yang, MinHo [Department of Materials Science and Engineering and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana–Champaign, Urbana, IL 61801 (United States); Kim, Dong Seok; Sim, Jae-Wook [Department of Chemical Engineering, Kangwon National University, 346 Joongang-ro, Samcheok, Gangwon-do 25913 (Korea, Republic of); Jeong, Jae-Min; Kim, Do Hyun [Department of Chemical & Biomolecular Engineering, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 34141 (Korea, Republic of); Choi, Jae Hyung [Department of Chemical Engineering, Kangwon National University, 346 Joongang-ro, Samcheok, Gangwon-do 25913 (Korea, Republic of); Department of Chemical Engineering, Pukyong National University, 365 Sinseon-ro, Nam-gu, Busan 48513 (Korea, Republic of); Kim, Jinsoo [Department of Chemical Engineering, Kyung Hee University, 1732, Daogyong-daero, Giheung-gu, Yongin, Gyeonggi-do 17104 (Korea, Republic of); Kim, Seung-Soo, E-mail: sskim2008@kangwon.ac.kr [Department of Chemical Engineering, Kangwon National University, 346 Joongang-ro, Samcheok, Gangwon-do 25913 (Korea, Republic of); Choi, Bong Gill, E-mail: bgchoi@kangwon.ac.kr [Department of Chemical Engineering, Kangwon National University, 346 Joongang-ro, Samcheok, Gangwon-do 25913 (Korea, Republic of)

    2017-06-15

    Highlights: • The three-dimensional nanocomposites based on vertical MnO{sub 2} array on hemp-derived carbon (HDC) were prepared by hydrothermal method. • The 3D v-MnO{sub 2}/HDC nanocomposites showed well-defined porous nature with a high specific surface area of 382.3 m{sup 2} g{sup −1}. • PET glycolysis was performed using the 3D v-MnO{sub 2}/HDC nanocomposites as a catalyst, leading to efficient catalytic performance. - Abstract: Three-dimensional (3D) carbon materials derived from waste biomass have been attracted increasing attention in catalysis and materials science because of their great potential of catalyst supports with respect to multi-functionality, unique structures, high surface area, and low cost. Here, we present a facile and efficient way for preparing 3D heterogeneous catalysts based on vertical MnO{sub 2} wires deposited on hemp-derived 3D porous carbon. The 3D porous carbon materials are fabricated by carbonization and activation processes using hemp (Cannabis Sttiva L.). These 3D porous carbon materials are employed as catalyst supports for direct deposition of vertical MnO{sub 2} wires using a one-step hydrothermal method. The XRD and XPS results reveal the crystalline structure of α-MnO{sub 2} wires. The resultant composites are further employed as a catalyst for glycolysis of poly(ethylene terephthalate) (PET) with high conversion yield of 98%, which is expected to be expressly profitable for plastics recycling industry.

  9. Identification of fasciclin-like arabinogalactan proteins in textile hemp (Cannabis sativa L.): in silico analyses and gene expression patterns in different tissues.

    Guerriero, Gea; Mangeot-Peter, Lauralie; Legay, Sylvain; Behr, Marc; Lutts, Stanley; Siddiqui, Khawar Sohail; Hausman, Jean-Francois

    2017-09-20

    The fasciclin-like arabinogalactan proteins (FLAs) belong to the arabinogalactan protein (AGP) superfamily and are known to play different physiological roles in plants. This class of proteins was shown to participate in plant growth, development, defense against abiotic stresses and, notably, cell wall biosynthesis. Although some studies are available on the characterization of FLA genes from different species, both woody and herbaceous, no detailed information is available on the FLA family of textile hemp (Cannabis sativa L.), an economically important fibre crop. By searching the Cannabis genome and EST databases, 23 CsaFLAs have been here identified which are divided into four phylogenetic groups. A real-time qPCR analysis performed on stem tissues (isolated bast fibres and shivs sampled at three heights), hypocotyls (6-9-12-15-17-20 days-old), whole seedlings, roots, leaves and female/male flowers of the monoecious fibre variety Santhica 27, indicates that the identified FLA genes are differentially expressed. Interestingly, some hemp FLAs are expressed during early phases of fibre growth (elongation), while others are more expressed in the middle and base of the stem and thus potentially involved in secondary cell wall formation (fibre thickening). The bioinformatic analysis of the promoter regions shows that the FLAs upregulated in the younger regions of the stem share a conserved motif related to flowering control and regulation of photoperiod perception. The promoters of the FLA genes expressed at higher levels in the older stem regions, instead, share a motif putatively recognized by MYB3, a transcriptional repressor belonging to the MYB family subgroup S4. These results point to the existence of a transcriptional network fine-tuning the expression of FLA genes in the older and younger regions of the stem, as well as in the bast fibres/shivs of textile hemp. In summary, our study paves the way for future analyses on the biological functions of FLAs in

  10. [Detection method for the ability of hemp (Cannabis sativa L.) seed germination by the use of 2,3,5-triphenyl-2H-tetrazolium chloride (TTC)].

    Ogata, Jun; Kikura-Hanajiri, Ruri; Yoshimatsu, Kayo; Kiuchi, Fumiyuki; Goda, Yukihiro

    2008-11-01

    Cannabis plants show a high Delta9-tetrahydrocannabinol content and are used as a psychoactive drug. Therefore the cultivation of hemp and its possession are prohibited by law in Japan. Meanwhile, Cannabis seeds have been used as a component of shichimi-togarashi (a Japanese spice), bird feed, or a crude drug (mashinin). To exclude the possibility of germination, it is officially noticed that hemp seeds must be killed. However, the number of violators has increased in recent years. To judge the ability of seed germination, a germination test is performed. However, the test requires several days and thus has not been used for on-site inspection. In this study, we developed a rapid detection method to determine the ability of Cannabis seeds to germinate using 2,3,5-triphenyl-2H-tetrazolium chloride (TTC). The principle of the assay is as follows. The endogenous respiratory enzymes in hemp seeds convert added colorless TTC into red 1,3,5-triphenylformazan. Consequently, a living embryo is stained red, while red does not appear in the dead seeds. The reaction was active over a pH range of 8.0-9.0, and the optimum activity was found from 40 to 50 degrees C. Under the optimum conditions, we were able to determine the ability of seeds to germinate based on the presence of color within 20 min. Since this method is rapid and simple, it is applicable to on-site inspections. In addition, it could be used as an alternative technique to the germination test, because erroneous decisions is cannot occur under the assay principle.

  11. Cooperation of Ad-hING4 and 125I seed in tumor-suppression on human pancreatic cancer xenograft in nude mice

    Zhai Hongyan; Fa Yihua; Su Chenghai; Yang Jicheng; Sheng Weihua; Xie Yufeng

    2009-01-01

    This work is to investigate the combined tumor-suppression effect of Adenovirus-mediated human ING4 (Ad-hING4) and 125 I seed on human pancreatic cancer xenograft and the possible mechanisms. Ad-hING4 recombinant adenovirus vector was transected into QBI-293A cells and high titre adenovirus was obtained. Subcutaneous tumor models were established with 25 nude mice with human pancreatic cancer cell line PANC-1. They were randomly divided into 5 groups: PBS control group, Ad carrier group, 125 I seed brachytherapy group, Ad-hING4 gene treatment group, combined 125 I seed and Ad-hING4 group. The tumor volumes were measured every 5 days after treatment, and were sacrificed on the 20th day. The tumors were measured and weighed to determine the ratio of tumor-suppression and Jin-Shi q value. Morphological changes of tumor cells,the tissue injury and apoptotic index AI were examined on pathological sections. MVD, Survivin and Caspase3 were tested in immunohistochemistry. The results show that the tumor-suppressive ratio of the 125 I seed group, Ad-hING4 group, combined treatment group were,respectively, 34.19%(P 0.05). It can be concluded that 125 I seed and Ad-hING4 inhibit the growth of PANC-1 pancreatic cancer on nude mice significantly. These indicate a synergy of the combined treatments in tumor-suppression and Ad-hING4 is a promising novel radiosensitizer. The mechanisms of tumor-suppressive may be multi-pathways such as down-regulation the expression of Survivin and up-regulation the expression of Caspase3 to induce apoptosis and inhibit angiogenesis. (authors)

  12. Efficacy of combining ING4 and TRAIL genes in cancer-targeting gene virotherapy strategy: first evidence in preclinical hepatocellular carcinoma.

    Galal El-Shemi, A; Mohammed Ashshi, A; Oh, E; Jung, B-K; Basalamah, M; Alsaegh, A; Yun, C-O

    2018-01-01

    Current treatments of hepatocellular carcinoma (HCC) are ineffective and unsatisfactory in many aspects. Cancer-targeting gene virotherapy using oncolytic adenoviruses (OAds) armed with anticancer genes has shown efficacy and safety in clinical trials. Nowadays, both inhibitor of growth 4 (ING4), as a multimodal tumor suppressor gene, and tumor necrosis factor-related apoptosis-inducing ligand (TRAIL), as a potent apoptosis-inducing gene, are experiencing a renaissance in cancer gene therapy. Herein we investigated the antitumor activity and safety of mono- and combined therapy with OAds armed with ING4 (Ad-ΔB/ING4) and TRAIL (Ad-ΔB/TRAIL) gene, respectively, on preclinical models of human HCC. OAd-mediated expression of ING4 or TRAIL transgene was confirmed. Ad-ΔB/TRAIL and/or Ad-ΔB/ING4 exhibited potent killing effect on human HCC cells (HuH7 and Hep3B) but not on normal liver cells. Most importantly, systemic therapy with Ad-ΔB/ING4 plus Ad-ΔB/TRAIL elicited more eradicative effect on an orthotopic mouse model of human HCC than their monotherapy, without causing obvious overlapping toxicity. Mechanistically, Ad-ΔB/ING4 and Ad-ΔB/TRAIL were remarkably cooperated to induce antitumor apoptosis and immune response, and to repress tumor angiogenesis. This is the first study showing that concomitant therapy with Ad-ΔB/ING4 and Ad-ΔB/TRAIL may provide a potential strategy for HCC therapy and merits further investigations to realize its possible clinical translation.

  13. Comment on “Stationary self-focusing of Gaussian laser beam in relativistic thermal quantum plasma” [Phys. Plasmas 20, 072703 (2013)

    Habibi, M.; Ghamari, F.

    2014-01-01

    Patil and Takale in their recent article [Phys. Plasmas 20, 072703 (2013)], by evaluating the quantum dielectric response in thermal quantum plasma, have modeled the relativistic self-focusing of Gaussian laser beam in a plasma. We have found that there are some important shortcomings and fundamental mistakes in Patil and Takale [Phys. Plasmas 20, 072703 (2013)] that we give a brief description about them and refer readers to important misconception about the use of the Fermi temperature in quantum plasmas, appearing in Patil and Takale [Phys. Plasmas 20, 072703 (2013)

  14. Response to "Comment on `Solitonic and chaotic behaviors for the nonlinear dust-acoustic waves in a magnetized dusty plasma'" [Phys. Plasmas 24, 094701 (2017)

    Zhen, Hui-Ling; Tian, Bo; Xie, Xi-Yang; Wu, Xiao-Yu; Wen, Xiao-Yong

    2018-02-01

    On our previous construction [H. L. Zhen et al., Phys. Plasmas 23, 052301 (2016)] of the soliton solutions of a model describing the dynamics of the dust particles in a weakly ionized, collisional dusty plasma comprised of the negatively charged cold dust particles, hot ions, hot electrons, and stationary neutrals in the presence of an external static magnetic field, Ali et al. [Phys. Plasmas 24, 094701 (2017)] have commented that there exists a different form of Eq. (4) from that shown in Zhen et al. [Phys. Plasmas 23, 052301 (2016)] and that certain interesting phenomena with the dust neutral collision frequency ν0>0 are ignored in Zhen et al. [Phys. Plasmas 23, 052301 (2016)]. In this Reply, according to the transformation given by the Ali et al. [Phys. Plasmas 24, 094701 (2017)] comment, we present some one-, two-, and N-soliton solutions which have not been obtained in the Ali et al. [Phys. Plasmas 24, 094701 (2017)] comment. We point out that our previous solutions in Zhen et al. [Phys. Plasmas 23, 052301 (2016)] are still valid because of the similarity between the two dispersion relations of previous solutions in Zhen et al. [Phys. Plasmas 23, 052301 (2016)] and the solutions presented in this Reply. Based on our soliton solutions in this Reply, it is found that the soliton amplitude is inversely related to Zd and B0, but positively related to md and α, where α refers to the coefficient of the nonlinear term, Zd and md are the charge number and mass of a dust particle, respectively, B0 represents the strength of the external static magnetic field. We also find that the two solitons are always in parallel during the propagation.

  15. Comment on 'Relation between space charge limited current and power loss in open drift tubes' [Phys. Plasmas 13, 073101 (2006)

    Swanekamp, S. B.; Schumer, J. W.

    2007-01-01

    In Phys Plasmas 13, 073101 (2006), the drop in the space-charge-limited (SCL) current for a beam injected into a space with an open boundary is analyzed with an electromagnetic particle-in-cell code. The authors explained the power loss observed at the open boundary as the loss of electromagnetic radiation created from the deceleration of electrons in the gap, and they developed an effective voltage theory to predict the drop in the SCL current observed in the simulations. In this Comment, we show that, provided the current remains below the SCL value, the electric and magnetic fields are constant in time so that power loss from the open boundary is a dc phenomenon with no rf power leaving through the boundary. We show that the electric and magnetic fields are static in time and static fields DO NOT RADIATE. Instead, the electron beam charges the collector plate, which causes a real electrostatic electric field to develop. The electron energy loss is not due to radiation but rather to the work done by this electrostatic field on the electrons as they move across the gap. This is precisely the energy dissipated in the matched resistance across the open boundary, which is a consequence of the boundary condition. Furthermore, since a real electrostatic potential develops, the voltage drop is real and there is no need to call the voltage drop an effective voltage

  16. Comment on “Diffusion of n-type dopants in germanium” [Appl. Phys. Rev. 1, 011301 (2014)

    Cowern, N. E. B.; Simdyankin, S.; Goss, J. P.; Napolitani, E.; De Salvador, D.; Bruno, E.; Mirabella, S.; Ahn, C.; Bennett, N. S.

    2015-01-01

    The authors of the above paper call into question recent evidence on the properties of self-interstitials, I, in Ge [Cowern et al., Phys. Rev. Lett. 110, 155501 (2013)]. We show that this judgment stems from invalid model assumptions during analysis of data on B marker-layer diffusion during proton irradiation, and that a corrected analysis fully supports the reported evidence. As previously stated, I-mediated self-diffusion in Ge exhibits two distinct regimes of temperature, T: high-T, dominated by amorphous-like mono-interstitial clusters—i-morphs—with self-diffusion entropy ≈30 k, and low-T, where transport is dominated by simple self-interstitials. In a transitional range centered on 475 °C both mechanisms contribute. The experimental I migration energy of 1.84 ± 0.26 eV reported by the Münster group based on measurements of self-diffusion during irradiation at 550 °C < T < 680 °C further establishes our proposed i-morph mechanism

  17. Loïc Brémaud, Catherine Guillaumin, L'archipel de l'ingénierie de la formation. Transformations, recompositions

    Wahl, Elodie

    2011-01-01

    L'ouvrage L'archipel de l'ingénierie de la formation est la publication des actes d'un colloque qui s'est tenu à l'Université de Rennes 2 en janvier 2009. Le colloque comptait 22 intervenants, l'ouvrage est conséquent, et les articles sont très variés, tant par les perspectives adoptées, que par leurs formes ou leurs contenus. L'ouvrage se divise en trois grandes parties : la première traite de l'évolution de l'ingénierie de la formation, la seconde des nouvelles pratiques d'ingénierie, et la...

  18. BRÉMAUD Loïc & GUILLAUMIN Catherine (dir.). L’archipel de l’ingénierie de formation. Transformations, recompositions

    Lavielle-Gutnik, Nathalie

    2011-01-01

    Cet ouvrage fait suite à un colloque éponyme associant les universités de Rennes 2, Tours et Nantes célébrant les vingt ans du Master SIFA (Stratégie et ingénierie en formation d’adultes). Le projet intellectuel que nourrit cet ouvrage est de reconsidérer les évolutions actuelles du champ de l’ingénierie de la formation. Son intérêt est moins d’identifier les pratiques d’ingénierie de formation, ce qu’il permet toutefois clairement de réaliser, que d’engager un véritable travail de modélisati...

  19. L’ingénierie pédagogique à base d’objets et le référencement par les compétences

    Gilbert Paquette

    2004-01-01

    Full Text Available Nous situons l’ingénierie pédagogique au confluent du design pédagogique, du génie logiciel et de l’ingénierie cognitive. Puis, dans l’optique d’une ingénierie pédagogique à base d’objets, nous proposons une méthode permettant de représenter graphiquement les connaissances et les compétences, puis de les associer aux ressources d’apprentissage. Par la suite, nous montrons comment cette méthode peut contribuer à améliorer la qualité des environnements en ligne à chacune des phases de leur cycle de vie.

  20. N-methyl-N-nitro-N-nitrosoguanidine-mediated ING4 downregulation contributed to the angiogenesis of transformed human gastric epithelial cells.

    Chen, Yansu; Fu, Rui; Xu, Mengdie; Huang, Yefei; Sun, Guixiang; Xu, Lichun

    2018-04-15

    Angiogenesis is associated with the progression and mortality of gastric cancer. Epidemiological evidences indicate that long-term N-nitroso compounds (NOCs) exposure predominantly contributes to the mortality of gastric cancer. Therefore, further reduced mortality of gastric cancer demands to explore the exact mechanisms of NOCs induced angiogenesis. As a tumor suppressor gene, inhibitor of growth protein 4 (ING4) plays an important role in pathological angiogenesis. In this study, we will investigate ING4 expression level in human gastric epithelial cells after the long-term low dose exposure of N-methyl-N-nitro-N-nitrosoguanidine (MNNG) and the pathological impact of MNNG-reduced ING4 on angiogenesis of transformed cells. The soft agar colony formation assay, Western blotting, immunofluorescence and wound healing assay were used to evaluate the characteristics of transformed cells. HUVEC growth and tube formation assays were performed to test the angiogenic abilities. EMSA, luciferase reporter gene assay, real-time PCR and Western blotting were used to explore the exact mechanism. By establishing transformed human gastric epithelial cells via chronic low dose treatment, a gradually ING4 downregulation was observed in the later-stage of MNNG-induced cell transformation. Moreover, we demonstrated that MNNG exposure-reduced ING4 expression significantly resulted into aggravating angiogenesis through increasing the phosphorylation level of NF-κB p65 and subsequently DAN binding activity and regulating the expressions of NF-κB p65 downstream pro-angiogenic genes, MMP-2 and MMP-9. Our findings provided a significant mechanistic insight into angiogenesis of MNNG-transformed human gastric epithelial cell and supported the concept that ING4 may be a relevant therapeutic target for gastric cancer. Copyright © 2018 Elsevier Inc. All rights reserved.

  1. Comment on 'On higher order corrections to gyrokinetic Vlasov-Poisson equations in the long wavelength limit' [Phys. Plasmas 16, 044506 (2009)

    Parra, Felix I.; Catto, Peter J.

    2009-01-01

    A recent publication [F. I. Parra and P. J. Catto, Plasma Phys. Controlled Fusion 50, 065014 (2008)] warned against the use of the lower order gyrokinetic Poisson equation at long wavelengths because the long wavelength, radial electric field must remain undetermined to the order the equation is obtained. Another reference [W. W. Lee and R. A. Kolesnikov, Phys. Plasmas 16, 044506 (2009)] criticizes these results by arguing that the higher order terms neglected in the most common gyrokinetic Poisson equation are formally smaller than the terms that are retained. This argument is flawed and ignores that the lower order terms, although formally larger, must cancel without determining the long wavelength, radial electric field. The reason for this cancellation is discussed. In addition, the origin of a nonlinear term present in the gyrokinetic Poisson equation [F. I. Parra and P. J. Catto, Plasma Phys. Controlled Fusion 50, 065014 (2008)] is explained.

  2. Lipophilic extractives from several nonwoody lignocellulosic crops (flax, hemp, sisal, abaca) and their fate during alkaline pulping and TCF/ECF bleaching.

    Marques, Gisela; del Río, José C; Gutiérrez, Ana

    2010-01-01

    The fate of lipophilic extractives from several nonwoody species (flax, hemp, sisal and abaca) used for the manufacturing of cellulose pulps, was studied during soda/anthraquinone (AQ) pulping and totally chorine free (TCF) and elemental chlorine free (ECF) bleaching. With this purpose, the lipophilic extracts from the raw materials and their unbleached and bleached industrial pulps, were analyzed by gas chromatography-mass spectrometry. Aldehydes, hydroxyfatty acids and esterified compounds such as ester waxes, sterol esters and alkylferulates strongly decreased after soda/AQ pulping while alkanes, alcohols, free sterols and sterol glycosides survived the cooking process. Among the lipophilic extractives that remained in the unbleached pulps, some amounts of free sterols were still present in the TCF pulps whereas they were practically absent in the ECF pulps. Sterol glycosides were also removed after both TCF and ECF bleaching. By contrast, saturated fatty acids, fatty alcohols and alkanes were still present in both bleached pulps.

  3. Télécoms pour l’ingénierie du risque, Tullio Tanzi, Patrick Perrot

    Jean-Baptiste Morin

    2013-04-01

    Full Text Available "Télécoms pour l’ingénierie du risque" est un ouvrage de 234 pages qui convoque la rencontre entre les Technologies de l’Information de la Communication (TIC et le risque. Les risques naturels, les risques industriels et technologiques ou encore les nouveaux risques générés par des usages déviants dans le domaine du numérique (cybercriminalité sont devenus monnaie courante. Les auteurs Tullio Tanzi (Professeur à Télécom ParisTech, département Traitement du Signal et des Images en télécommun...

  4. Changes in Soil C/N Ratio and Response of Growth of Hemp (Cannabis sativa L. to Different Levels of Animal Manure and Chemical Fertilizers

    S Laleh

    2018-05-01

    Full Text Available Introduction Hemp is used in the food, drug, and natural fibers. Assessment of various systems of plant nutrition is one of the ways to improve field management and production of medicinal plants. Nitrogen is considered a necessary element in plant nutrition. Nitrogen uptake as ammonium compounds form, serves as starting material for amino acid biosynthesis and additional N-containing compound such as pyrimidine, purine bases, chlorophyll, proteins, nucleic acid, vitamins and other organic compounds, therefore, the higher plants require larger amount of nitrogen. Phosphorus is the second most important nutrient in plants. Studies show that application of animal manure provides different nutrients for plants. Application of animal manure in soil at the optimal level for plant growth provides a opportunities for soil fertility, conservation, sustainability, and protection against degradation but they need time to release their nutrient. Various studies showed that the combined usage the animal manure and chemical fertilizers (like N and P has positive effects on soil, growth and yield of plant with the aim of protecting the environment. Organic and inorganic fertilizers are effective on soil C/N ratio. Soil C/N ratio is important factor for plant and soil. It is important to study the different stages of plant growth responses to organic and chemical fertilizers for plants production. Therefore, the present study was undertaken to evaluate the effect of organic amendments enriched with chemical fertilizers of nitrogen and phosphorus and studying changes of soil C/N ratio in vegetative and reproductive stages of hemp. Materials and Methods To study the effect of different levels of animal manure and chemical fertilizers, a split factorial experiment, based on complete randomized blocks design with three replications was conducted at the Research Farm of Faculty of agriculture, University of Birjand, during the growing season 2013-2014. Experimental

  5. On the use of polarization modulation in combined interferometry and polarimetry. Corrigendum. 1998 Plasma Phys. Control. Fusion, v. 40 p. 153-161

    Segre, S.E.

    1998-01-01

    Errors in the main text, the appendix and two curves are corrected in this corrigendum to the paper entitled ''On the use of polarization modulation in combined interferometry and polarimetry'', written by S.E. Segre and published in 1998 Plasma Phys. Control. Fusion, v. 40 p. 153-161

  6. Comment on 'Wave functions for a Duffin-Kemmer-Petiau particle in a time-dependent potential' [J. Math. Phys. 48, 073515 (2007)

    Castro, L. B.; Castro, A. S. de

    2010-01-01

    It is shown that the paper 'Wave functions for a Duffin-Kemmer-Petiau particle in a time-dependent potential' by Merad and Bensaid [J. Math. Phys. 48, 073515 (2007)] is not correct in using inadvertently a non-Hermitian Hamiltonian in a formalism that does require Hermitian Hamiltonians.

  7. Comment on open-quote open-quote Bohm criterion for the collisional sheath close-quote close-quote [Phys. Plasmas 3, 1459 (1996)

    Riemann, K.U.; Meyer, P.

    1996-01-01

    Recently, Valentini [Phys. Plasmas 3, 1459 (1996)] investigated the influence of collisions on the space charge formation and derived a modified Bohm criterion accounting for collisions in the sheath. It is shown that this derivation is wrong and is based on a misinterpretation of the plasma sheath concept. copyright 1996 American Institute of Physics

  8. Comment on: Path integral solution of the Schroedinger equation in curvilinear coordinates: A straightforward procedure [J. Math. Phys. 37, 4310 endash 4319 (1996)

    Wurm, A.; LaChapelle, J.

    1997-01-01

    The authors comment on the paper by J. LaChapelle, J. Math. Phys. 37, 4310 (1996), and give explicit expressions for the parametrization, its solution, and the Lie derivatives of the Schroedinger equation for the case of n-dimensional spherical coordinates

  9. Erratum: Laser-Induced Graphite Plasma Kinetic Spectroscopy under Different Ambient Pressures [Chin. Phys. Lett. Vol. 32, No. 4, 043201(2015)

    Chaudhary, K.; Rosalan, S.; Aziz, M. S.; Bahadoran, M.; Ali, J; Bidin, N.; Saktioto; Yupapin, P. P.

    2015-01-01

    There is a typewriting mistake in our previous report [Chin. Phys. Lett. 32, 4 (2015) 043201], the name of the fourth author M. Bohadoran should be M. Bahadoran. We note that this mistake does not affect the conclusion of our report, and apologize for any inconvenience for readers caused by our oversight. (paper)

  10. Erratum to “Neutron–19C scattering: Emergence of universal properties in a finite range potential” [Phys. Lett. B 764 (2017 196

    M.A. Shalchi

    2017-08-01

    Full Text Available Numerical results for the function (1−EK/E0kcot⁡δ0R, as given in Phys. Lett. B 764 (2017 196, are revised. Fig. 2 and Tables 2 and 3 should be replaced by the following corresponding figure and tables. The conclusions of the original paper remain unchanged.

  11. Kui suur palk oleks õpetaja töö vääriline? / Inge Kalle, Maia Uibo, Lauri Leesi ... [jt.

    2011-01-01

    Küsimusele vastavad Vastse-Kuuste kooli direktor Inge Kalle, Ülenurme gümnaasiumi õpetaja-metoodik Maia Uibo, Tallinna Prantsuse Lütseumi direktor Lauri Leesi, Saaremaa ühisgümnaasiumi direktor Viljar Aro ja Heimtali põhikooli direktor Eero Metsavahi

  12. Teeninduse taseme hoidmine ja heade teenindajate leidmine on tööandjatele võtmeküsimus / Anu-Mall Naarits, Anneli Mere, Kristjan Laja, Inge Suder

    2009-01-01

    Anu-Mall Naarits Maratist, Anneli Mere Matkasport OÜ-st, Kristjan Laja Ambient Marketingist ning Inge Suder AS-ist Eesti Post vastavad küsimustele, mis puudutavad tagasisidet teenindusele, teenindajatele pakutavaid koolitusi ja motivatsioonipakette, teeninduse taset Eestis, teenindustöötajate palgataset, hea teenindaja isikuomadusi ning raskemaid ülesandeid teenindaja töös

  13. Tales of Recombinant Femininity: "The Reincarnation of Golden Lotus," the "Chin P'ing Mei," and the Politics of Melodrama in Hong Kong.

    Fore, Steve

    1993-01-01

    Examines the film "The Reincarnation of Golden Lotus" and the text upon which it is loosely based, the "Chin P'ing Mei," and the relationship between it and modern Chinese culture. States that the film's screenplay is much less an adaptation of the source novel than it is a female-centered reworking of a particular narrative…

  14. STUDY REGARDING THE INFLUENCE OF THE BIOSCOURING TREATMENT IN ULTRASOUND ON 60 % COTTON + 40 % HEMP MATERIALS PART II. STUDY REGARDING THE INFLUENCE OF BIOSCOURI NG TREATMENT FOLLOWED BY A WHITENING TREATMENT USING VARIOUS METHODS

    DOCHIA Mihaela

    2014-05-01

    Full Text Available This study shows a comparative characterization of whitening treatment using various processes for 60 % cotton +40 % hemp materials scoured by Bioscouring treatment in ultrasound described in our previous work. The results of the extraction of noncellulosic impurities using the Bioscouring treatment was ex pressed as weight loss, hydrophilicity. Some of these bio-scoured samples were whitened using various procedures: Classical procedure with hydrogen peroxide (30%, with catalyst and with laccase enzyme. By whitening procedure, the double bonds from chromophore groups of natural pigments from cotton and hemp are destroyed by oxidation reactions, the Π electrons being those responsible for the yellow color of the fabrics. In order to characterize the quality of the enzymatic pretreatment compared to the classical one, the values of the degree of white were studied after different type of bleaching (hydrogen peroxide, catalyst and laccase for the samples treated with the same concentration of enzyme SERA ZYME C-PE (ROGLYR ECO 183 - Pectate Lyase. For comparing the degradation occurred during the enzymatic preatreatment of cellulosic fabrics, before and after bleaching with enzymes, catalyst and classical method, measurements of the tensile strength and elongation at break for the treated 60 % cotton +40 % hemp material, were performed.

  15. iNR-PhysChem: a sequence-based predictor for identifying nuclear receptors and their subfamilies via physical-chemical property matrix.

    Xuan Xiao

    Full Text Available Nuclear receptors (NRs form a family of ligand-activated transcription factors that regulate a wide variety of biological processes, such as homeostasis, reproduction, development, and metabolism. Human genome contains 48 genes encoding NRs. These receptors have become one of the most important targets for therapeutic drug development. According to their different action mechanisms or functions, NRs have been classified into seven subfamilies. With the avalanche of protein sequences generated in the postgenomic age, we are facing the following challenging problems. Given an uncharacterized protein sequence, how can we identify whether it is a nuclear receptor? If it is, what subfamily it belongs to? To address these problems, we developed a predictor called iNR-PhysChem in which the protein samples were expressed by a novel mode of pseudo amino acid composition (PseAAC whose components were derived from a physical-chemical matrix via a series of auto-covariance and cross-covariance transformations. It was observed that the overall success rate achieved by iNR-PhysChem was over 98% in identifying NRs or non-NRs, and over 92% in identifying NRs among the following seven subfamilies: NR1--thyroid hormone like, NR2--HNF4-like, NR3--estrogen like, NR4--nerve growth factor IB-like, NR5--fushi tarazu-F1 like, NR6--germ cell nuclear factor like, and NR0--knirps like. These rates were derived by the jackknife tests on a stringent benchmark dataset in which none of protein sequences included has ≥60% pairwise sequence identity to any other in a same subset. As a user-friendly web-server, iNR-PhysChem is freely accessible to the public at either http://www.jci-bioinfo.cn/iNR-PhysChem or http://icpr.jci.edu.cn/bioinfo/iNR-PhysChem. Also a step-by-step guide is provided on how to use the web-server to get the desired results without the need to follow the complicated mathematics involved in developing the predictor. It is anticipated that iNR-PhysChem may

  16. Response to Comment on 'On Higher-Order Corrections to Gyrokinetic Vlasov-Poisson Equations in the Long Wavelength Limit [Phys. Plasmas 16,044506 (2009)]'

    Lee, W.W.; Kolesnikov, R.A.

    2009-01-01

    We show in this Response that the nonlinear Poisson's equation in our original paper derived from the drift kinetic approach can be verified by using the nonlinear gyrokinetic Poisson's equation of Dubin et al. (Phys. Fluids 26, 3524 (1983)). This nonlinear contribution in φ 2 is indeed of the order of k # perpendicular# 4 in the long wavelength limit and remains finite for zero ion temperature, in contrast to the nonlinear term by Parra and Catto (Plasma Phys. Control. Fusion 50, 065014 (2008)), which is of the order of k # perpendicular# 2 and diverges for T i → 0. For comparison, the leading term for the gyrokinetic Poisson's equation in this limit is of the order of k # perpendicular# 2 φ.

  17. Ingénierie de la maintenance De la conception à l'exploitation d'un bien

    Francastel, Jean-Claude

    2003-01-01

    La maintenance a évolué : d’abord confinée à l’entretien des équipements “réparer“ les pannes puis élargie à leur surveillance “prévoir” les pannes elle est intégrée aujourd’hui dès la phase de conception du produit avec notamment le concept de “maintenabilité” du produit. L’ingénierie de maintenance désigne ce processus d’accompagnement d’un bien industriel durant toutes les phases de son cycle de vie de la conception au démantèlement qui permet d’optimiser l’exploitation de ce bien et son coût global life cycle cost. Cet ouvrage décrit les différentes phases du cycle de vie en exposant les techniques qui permettent d’intégrer à chaque étape les concepts de maintenance.

  18. Material development in the SI sub 3 N sub 4 system using glass encapsulated Hip'ing

    Corbin, N.D.; Sundberg, G.J.; Siebein, K.N.; Willkens, C.A.; Pujari, V.K.; Rossi, G.A.; Hansen, J.S.; Chang, C.L.; Hammarstrom, J.L.

    1992-04-01

    This report covers a two-year program to develop fully dense Si{sub 3}N{sub 4} matrix SiC whisker composites with enhanced properties over monolithic Si{sub 3}N{sub 4} materials. The primary goal was to develop a composite with a fracture toughness > 10 MPa{radical}m, capable of using high pressure glass encapsulated HIP'ing. Coating methods were developed to apply thin (<150nm) stoichiometric BN layers to SiC whiskers and also to apply a dual coating of SiC over carbon to the whiskers. Fracture toughness of the composites was determined to increase as the quantity of whiskers (or elongated grains) with their axis perpendicular to the crack plane increased. Of the interface compositions evaluated in this effort, carbon was determined to be the most effective for increasing toughness. The highest toughnesses (6.8--7.0 MPa{radical}m) were obtained with uniaxially aligned carbon coated whiskers. There was no evidence of the carbon coating compromising the oxidation resistance of the composites at 1370{degree}C.

  19. Approches par points de vue pour l’ingénierie des Systèmes d’information

    Brahim Lahna

    2009-07-01

    Full Text Available Les concepts de point de vue, de rôle, de perspective et de vue ont été largement étudiés et utilisés dans de nombreux travaux, dans divers domaines de l’informatique. On retrouve ces notions dans les Systèmes de Représentation de Connaissances par Objets, les Bases de Données Orientées Objets, les Méthodes de Conception, la Programmation Orientée Objets, etc. Chaque domaine lui donne sa propre définition et l’utilise dans son propre contexte. La notion de vue se développe indépendamment dans ces différentes disciplines. Bien que les propositions différent, elles sont confrontées aux mêmes problèmes : établir des relations entre vues et garantir la cohérence des vues entre elles ou vis-à-vis d'un modèle de référence. Nous présentons dans cet article des travaux relatifs aux notions de vues et points de vue dans différentes disciplines informatiques en insistant sur une proposition originale pour une nouvelle ingénierie des systèmes d’information orientée perspectives et composants multivues réutilisables.

  20. Corrigendum to ;Lotka-Volterra systems satisfying a strong Painlevé property; [Phys. Lett. A 380 (47) (2016) 3977-3982

    Bountis, Tassos; Vanhaecke, Pol

    2017-12-01

    The comment made after the proof of Proposition 3.3, in our paper [T. Bountis, P. Vanhaecke, Lotka-Volterra systems satisfying a strong Pailevé property, Phys. Lett. A 380 (47) (2016) 3977-3982], saying that the proposition can be generalized when linear terms are added to the Lotka-Volterra systems considered in the paper, is wrong. In general such deformed systems are not even Hamiltonian.

  1. Comment on 'Instability of the Shukla mode in a dusty plasma containing equilibrium density and magnetic field inhomogeneities' [Phys. Plasmas 11, 1732 (2004)] and 'New resonance and cut-off for low-frequency electromagnetic waves in dusty magnetoplasmas' [Phys. Plasmas 11, 2307 (2004)

    Rudakov, Leonid

    2004-01-01

    It is shown that the oscillation named by Shukla as the 'Shukla mode' is well known in the plasma physics literature as the magnetic drift wave. In addition, the instability of these modes in a cold plasma as claimed by Shukla et al. [Phys. Plasmas 11, 1732 (2004)] does not exist and is due to a mathematical error in their analysis. Also the 'new' resonance and new cutoff frequencies claimed by Shukla et al. and Mamum et al. [Phys Plasmas 11, 2307 (2004)] have been known in the published literature for decades

  2. Le "projet G." : une ingénierie de formation. Conception et gestion d'un dispositif d'enseignement (le geste et l'effet)

    Marty , Olivier

    2012-01-01

    Document de travail pour l'Axe 4 "Organisations et formation" du CRF [Avec une note additive formalisant les données empiriques]; Le projet d'ingénierie de formation décrit consiste à développer une école de gestion en ligne, d'une durée de trois années, visant un public d'une soixantaine de néo-bacheliers, avec une équipe pédagogique d'une dizaine d'enseignants employés par le Ministère. Décrire ce projet nous permet de présenter l'organisation et l'ingénierie de formation en utilisant à la ...

  3. Mida teed siis, kui töötaja on avaldanud soovi firmast lahkuda? / Inge Rumessen, Andres Hall, Mariliin Saar ... [jt.

    2016-01-01

    Küsimusele vastavad PR Strategies partner ja strateegiline konsultant Inge Rumessen, auto24ring juhataja Andrs Hall, vabakutseline loovjuht ja produtsent Mariliin Saar, advokaadibüroo Tark partner Hannes Küün, ettevõtte Ööloom ja Frank kaasasutaja Jan Plaan, haridus- ja teadusministeeriumi personaliosakonna juhataja Margot Saluse, Sorry as Service müügijuht ja asutaja Indrek Põldvee ja EBS-i rahvusvahelise koostöö prorektor Toomas Danneberg

  4. Alternations in Cholesterol and Fatty Acids Composition in Egg Yolk of Rhode Island Red x Fyoumi Hens Fed with Hemp Seeds (Cannabis sativa L.

    Suhaib Shahid

    2015-01-01

    Full Text Available The present study was designed to evaluate the influence of hemp seed (HS supplementation on egg yolk cholesterol and fatty acid composition in laying hens. Sixty hens (Rhode Island Red x Fyoumi were evenly distributed into four groups (three replicates per group at the peak production (34 weeks. HS was included into the ration at the level of 0.0 (HS-0, 15 (HS-15, 20 (HS-20, and 25% (HS-25 and continued the supplementation for consecutively three weeks. At the end of the experiment, three eggs per replicate were randomly collected and analyzed for egg yolk fatty acids and cholesterol profile. The statistical analysis of the result revealed that supplementation of HS-25 significantly (P<0.05 decreased egg yolk total cholesterol, myristic (C14:0, palmitic (C16:0, and stearic (C18:0. Similarly, total as well as individual monounsaturated fatty acids decreased significantly (P<0.05 while total and individual polyunsaturated fatty acids increased significantly in the HS-25. In addition, total omega-3 and omega-6 increased significantly in the HS-25 group. From the present result, we concluded that addition of HS at the rate of 25% to the diet of laying hens augmented the cholesterol and fatty acids profile in egg yolk.

  5. Antioxidant and ACE-inhibitory activities of hemp (Cannabis sativa L.) protein hydrolysates produced by the proteases AFP, HT, Pro-G, actinidin and zingibain.

    Teh, Sue-Siang; Bekhit, Alaa El-Din A; Carne, Alan; Birch, John

    2016-07-15

    Hemp protein isolates (HPIs) were hydrolysed by proteases (AFP, HT, ProG, actinidin and zingibain). The enzymatic hydrolysis of HPIs was evaluated through the degree of hydrolysis and SDS-PAGE profiles. The bioactive properties of the resultant hydrolysates (HPHs) were accessed through ORAC, DPPḢ scavenging and ACE-inhibitory activities. The physical properties of the resultant HPHs were evaluated for their particle sizes, zeta potential and surface hydrophobicity. HT had the highest rate of caseinolytic activity at the lowest concentration (0.1 mg mL(-1)) compared to other proteases that required concentration of 100 mg mL(-1) to achieve their maximum rate of caseinolytic activity. This led to the highest degree of hydrolysis of HPIs by HT in the SDS-PAGE profiles. Among all proteases and substrates, HT resulted in the highest bioactivities (ORAC, DPPḢ scavenging and ACE-inhibitory activities) generated from alkali extracted HPI in the shortest time (2 h) compared to the other protease preparations. Copyright © 2016 Elsevier Ltd. All rights reserved.

  6. Effect of dietary supplementation of hemp seed (Cannabis sativa L.) on meat quality and egg fatty acid composition of Japanese quail (Coturnix coturnix japonica).

    Yalcin, H; Konca, Y; Durmuscelebi, F

    2018-02-01

    This study was conducted in two separate experiments. Experiment I was conducted to investigate the effects of hemp seed (HS) on meat quality traits, and experiment II was designed to determine egg fatty acid (FA) composition in Japanese quail (Coturnix coturnix japonica). In experiment I and experiment II treatments, groups were as follows: (i) control (not included HS0), (ii) 5% HS inclusion to diets, (iii) 10% HS inclusion to diets and (iv) 20% HS inclusion to diets. In experiment I, a total of 192 7-day-old-quail were fed with HS diets for 5 weeks, and end of the experiment I, a total of 64 quail (16 each) slaughtered and meat samples were analysed for meat colour, pH, cooking and thawing loss and FA composition. In experiment II, a total of 120 8-week-old laying quail were fed with experimental diets for 6 weeks and egg FA composition were determined. Breast meat cooking loss was significantly lower in 20% supplemented group (p egg samples were linearly increased with increasing the dietary HS ratio (p eggs (p egg yolk omega-3 FA content and decrease cooking loss of quail meats. © 2017 Blackwell Verlag GmbH.

  7. Green(ing) infrastructure

    Van Wyk, Llewellyn V

    2014-03-01

    Full Text Available the generation of electricity from renewable sources such as wind, water and solar. Grey infrastructure – In the context of storm water management, grey infrastructure can be thought of as the hard, engineered systems to capture and convey runoff..., pumps, and treatment plants.  Green infrastructure reduces energy demand by reducing the need to collect and transport storm water to a suitable discharge location. In addition, green infrastructure such as green roofs, street trees and increased...

  8. Comment on “Shape transition of unstrained flattest single-walled carbon nanotubes under pressure” [J. Appl. Phys. 115, 044512 (2014)

    Vassilev, Vassil M., E-mail: vasilvas@imbm.bas.bg; Djondjorov, Peter A., E-mail: padjon@imbm.bas.bg [Institute of Mechanics, Bulgarian Academy of Sciences Acad. G. Bonchev Str., Block 4, Sofia 1113 (Bulgaria); Mladenov, Ivaïlo M., E-mail: mladenov@bio21.bas.bg [Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences Acad. G. Bonchev Str., Block 21, Sofia 1113 (Bulgaria)

    2015-05-21

    Recently, Mu et al. [J. Appl. Phys. 115, 044512 (2014)] have developed an analytic approach to describe some special shapes of a single-wall carbon nanotube (SWCNT) under hydrostatic pressure. These authors have found approximate analytic expressions for the parametric equations of the tube cross section profile and its curvature at the convex-to-concave transition pressure using a shell-like 2D continuum model describing the shapes of such nanotubes. In this comment, we provide additional insight into this problem taking into account the exact analytic representation of the shapes that a SWCNT attains when subjected to hydrostatic pressure according to the very same continuum model.

  9. Comment on “Two-dimensional positive column structure in a discharge tube with radius discontinuity” [Phys. Plasmas 21, 113503 (2014)

    Demidova, M. V. [Department of Chemistry, Wright State University, Dayton, Ohio 45435 (United States); Division of NLP Technology, INTEPH Technology LLC, Dayton, Ohio 45066 (United States); Kudryavtsev, A. A. [Division of NLP Technology, INTEPH Technology LLC, Dayton, Ohio 45066 (United States); International Laboratory “Nonlocal Plasma in Nanotechnology and Medicine”, ITMO University, Kronverkskiy pr. 49, St. Petersburg 197101 (Russian Federation); Kurlyandskaya, I. P. [International Laboratory “Nonlocal Plasma in Nanotechnology and Medicine”, ITMO University, Kronverkskiy pr. 49, St. Petersburg 197101 (Russian Federation); Department of Optics, St. Petersburg State University, St. Petersburg 199034 (Russian Federation); Saifutdinov, A. I.; Stepanova, O. M. [Department of Optics, St. Petersburg State University, St. Petersburg 199034 (Russian Federation)

    2015-09-15

    Zobnin et al. have published a paper [Phys. Plasmas, 21, 113503 (2014)] on a topic of discharge physics in the presence of a sharp change in cylindrical discharge geometry. In the comment it is pointed out that for untrapped electrons a full kinetic equation, which includes dependences on spatial coordinates and energies, has to be used for the electron velocity distribution function determination. It is also unclear what probe theories Zobnin et al. have used in their paper for the calculation of electron current to the discharge tube wall.

  10. Les métiers innovants de la formation. Le champ de la formation professionnelle et l'ingénierie de formation à distance

    Marty, Olivier

    2013-01-01

    National audience; This document is extracted from a conference for PhD students at La Sorbonne University (Paris) about innovative teaching professions. It describes and analyses the crafts of vocational education as well as public distance education engineering.; Ce document est le support d'une conférence sur les métiers innovants de la formation. Après les définitions d'usage, il décrit et analyse les métiers de la formation professionnelle continue et l'ingénierie de formation à distance...

  11. Kes peaks tagama seaduste täitmise? / Inge Timoštšuk, Volli Kalm, Maiki Udam ; üles kirjutanud Ülo Tikk

    Timoštšuk, Inge, 1970-

    2001-01-01

    Vene koolidel käib Põhikooli- ja Gümnaasiumiseaduse § 52 teise lõike "Riigi- ja munitsipaalgümnaasiumides alustatakse üleminekut eesti õppekeelele hiljemalt 2007/08. õppeaastal" täitmine üle jõu, kuna ei jätku pädevaid õpetajaid. Teemat kommenteerivad Tartu Ülikooli prorektor Volli Kalm, Tallinna Pedagoogikaülikooli õpetajakoolituse osakonna juhataja Inge Timoštšuk ja Haridusministeeriumi kõrghariduse talituse juhataja Maiki Udam

  12. Finance computationnelle et gestion des risques ingénierie financière avec applications Excel (Visual Basic) et Matlab

    Racicot, François-Éric

    2006-01-01

    Ce manuel propose un exposé rigoureux de la gestion des risques en finance. Les aspects théoriques de la question sont abordés par des démonstrations claires et des rappels élaborés des bases mathématiques de la finance computationnelle. Le texte est émaillé de nombreux programmes écrits en langages Visual Basic (Excel), Matlab et EViews qui prépareront l'étudiant à sa carrière de spécialiste en ingénierie financière.

  13. Lab. of Appl. Math. Phys

    Albertsen, Niels Christian

    1989-01-01

    A new system of poles for the Green's function for a dielectric-coated cylinder has been found. In general, these poles correspond to creeping waves, which are strongly attenuated except for very thick coatings. For radii below a critical value, one of the new poles replaces one of those previous...

  14. Bed agglomeration risk related to combustion of cultivated fuels (wheat straw, red canary grass, industrial hemp) in commercial bed materials; Baeddagglomereringsrisk vid foerbraenning av odlade braenslen (hampa, roerflen, halm) i kommersiella baeddmaterial

    Erhardsson, Thomas; Oehman, Marcus; Geyter, Sigrid de; Oehrstroem, Anna

    2006-12-15

    The market of forest products is expanding and thus resulting in more expensive biomass fuels. Therefore research within the combustion industry for alternative fuels is needed, for example cultivated fuels. Combustion and gasification research on these cultivated fuels are limited. The objectives of this work was to increase the general knowledge of silicon rich cultivated fuels by study the agglomeration characteristics for wheat straw, reed canary grass and industrial hemp in combination with commercial bed materials. Controlled fluidized bed agglomeration tests was conducted in a 5 kW, bench-scale, bubbling fluidized bed reactor. The tendencies of agglomeration were determined with the three cultivated fuels in combination with various minerals present in natural sand (quarts, plagioclase and potassium feldspar) and an alternative bed material (olivine). During the experiments bed samples and formed agglomerates were collected for further analyses with a scanning electron microscope (SEM) and with X-ray microanalysis (EDS). Wheat straw had the highest agglomeration tendency of the studied fuels followed by reed canary grass and industrial hemp. No significant layer formation was found around the different bed particles. Instead, the ash forming matter were found as individual ash sticky (partial melted) particles in the bed. The bed material mineralogical composition had no influence of the agglomeration process because of the non layer formation propensities of the used silicon rich fuels.

  15. Comment on “Motion of a helical vortex filament in superfluid 4He under the extrinsic form of the local induction approximation” [Phys. Fluids 25, 085101 (2013)

    Hietala, Niklas; Hänninen, Risto

    2014-01-01

    We comment on the paper by Van Gorder [“Motion of a helical vortex filament in superfluid 4 He under the extrinsic form of the local induction approximation,” Phys. Fluids 25, 085101 (2013)]. We point out that the flow of the normal fluid component parallel to the vortex will often lead into the Donnelly–Glaberson instability, which will cause the amplification of the Kelvin wave. We explain why the comparison to local nonlinear equation is unreasonable, and remark that neglecting the motion in the x-direction is not reasonable for a Kelvin wave with an arbitrary wavelength and amplitude. The correct equations in the general case are also derived

  16. Addendum to: ''The SNO solar neutrino data, neutrinoless double beta-decay and neutrino mass spectrum'' [Phys. Lett. B 544 (2002) 239

    Pascoli, S.; Petcov, S.T.

    2004-01-01

    We update our earlier study [Phys. Lett. B 544 (2002) 239], which was inspired by the 2002 SNO data, on the implications of the results of the solar neutrino experiments for the predictions of the effective Majorana mass in neutrinoless double beta-decay, vertical bar vertical bar. We obtain predictions for vertical bar vertical bar using the values of the neutrino oscillation parameters, obtained in the analyzes of the presently available solar neutrino data, including the just published data from the salt phase of the SNO experiment, the atmospheric neutrino and CHOOZ data and the first data from the KamLAND experiment. The main conclusion reached in the previous study [Phys. Lett. B 544 (2002) 239] of the existence of significant lower bounds on vertical bar vertical bar in the cases of neutrino mass spectrum of inverted hierarchical (IH) and quasi-degenerate (QD) type is strongly reinforced by fact that combined solar neutrino data (i) exclude the possibility of cos2θ o =0 at more than 5 s.d., (ii) determine as a best fit value cos2θ o =0.40, and (iii) imply at 95% C.L. that cos2θ o ∼>0.22, θ o being the solar neutrino mixing angle. For the IH and QD spectra we get using, e.g., the 90% C.L. allowed ranges of values of the oscillation parameters, vertical bar vertical bar ∼>0.010 eV and vertical bar vertical bar ∼>0.043 eV, respectively. We also comment on the possibility to get information on the neutrino mass spectrum and on the CP-violation in the lepton sector due to Majorana CP-violating phases

  17. Comment on “Magnetic geometry and physics of advanced divertors: The X-divertor and the snowflake” [Phys. Plasmas 20, 102507 (2013)

    Ryutov, D. D.; Cohen, R. H.; Rognlien, T. D.; Soukhanovskii, V. A.; Umansky, M. V.

    2014-01-01

    In the recently published paper “Magnetic geometry and physics of advanced divertors: The X-divertor and the snowflake” [Phys. Plasmas 20, 102507 (2013)], the authors raise interesting and important issues concerning divertor physics and design. However, the paper contains significant errors: (a) The conceptual framework used in it for the evaluation of divertor “quality” is reduced to the assessment of the magnetic field structure in the outer Scrape-Off Layer. This framework is incorrect because processes affecting the pedestal, the private flux region and all of the divertor legs (four, in the case of a snowflake) are an inseparable part of divertor operation. (b) The concept of the divertor index focuses on only one feature of the magnetic field structure and can be quite misleading when applied to divertor design. (c) The suggestion to rename the divertor configurations experimentally realized on NSTX (National Spherical Torus Experiment) and DIII-D (Doublet III-D) from snowflakes to X-divertors is not justified: it is not based on comparison of these configurations with the prototypical X-divertor, and it ignores the fact that the NSTX and DIII-D poloidal magnetic field geometries fit very well into the snowflake “two-null” prescription

  18. Corrigendum to “Multi-modal Fission in Collinear Ternary Cluster decay of 252Cf(sf,fff” [Phys. Lett. B 746 (2015 223

    W. von Oertzen

    2017-02-01

    Full Text Available The scale of the ordinate axis of Fig. 4 on page 226 of PLB 746 (2015 223 was incorrect. The new version of Fig. 4 (which is “Fig. 1” in the present note with the correct ordinate axis is given here (upper part. The lower part shows the previous version. Five potential wells and barriers are shown. Considering a sequential process, two barriers are relevant for the sequential decay, with equal barriers for the symmetric cases with a smaller fragment at the center (in these cases only one barrier is shown. For the asymmetric case of 70Ni + 50Ca + 132Sn, two different barriers appear, denoted as (B1 and (B2, which correspond to the interactions of the middle cluster 50Ca with the outer nuclei 70Ni and 132Sn, respectively. In a sequential mechanism the separation of 132Sn from the other part via the barrier B2 has the smaller height, thus it is favored for the first step. For the second step the barrier (B1 between Ni and Ca, appears at smaller distances (dot-dashed curve and is higher. The order of the barriers of the five channels is unchanged, compared to the figure in Ref. W. von Oertzen et al., Phys. Lett. B 746 (2015 223.

  19. Cambodian and their Doctors, a Medical Anthropology of Colonial and Post-Colonial Cambodia, Jan Ovesen & Ing-Britt Trankell

    Didier Bertrand

    2012-09-01

    Full Text Available Cet ouvrage, écrit par Jan Ovesen et Ing-Britt Trankell (professeurs associés d’anthropologie à l’université d’Uppsala engagés dans l’étude de la société cambodgienne depuis 1995, offre une synthèse unique d’anthropologie historique et d’ethnographie contemporaine sur le système de soins de santé cambodgien de la colonisation française à nos jours. Les auteurs décrivent la tension dans le Cambodge moderne entre la tradition médicale occidentale introduite par les colonisateurs français et le...

  20. An Anomaly in the Inglis-Teller Limits of the C VI Lyman and Balmer Series in Laser-Produced Plasmas

    Elton, R.; Iglesias, E.; Griem, H.; Weaver, J.; Pien, G.; Mancini, R.

    2002-11-01

    Soft x-ray spectra from thin carbon layers heated by the OMEGA and NIKE lasers have been obtained with both spherical and planar targets, respectively, using a flat-field grazing incidence spectrograph equipped with a gated microchannel plate for temporal resolution. In both experiments, late-time (recombining) hydrogenic C VI spectra show an n-to-1 Lyman spectral series blending with the continuum at n=4, contrary to n=9 in the n-to-2 Balmer series. It appears unlikely that plasma inhomogeneities are the sole cause of this anomaly, given the difference in the experimental configurations. Other explanations for the line-to-continuum merging (other than the usual Stark-broadened Inglis-Teller effect) under consideration include non-thermal Doppler broadening, deviations from statistical sublevel population distributions, and opacity effects. Collisional-radiative and hydrodynamic modeling, including cascades, is employed to further understand this phenomenon.

  1. Sedimentary environments in the south-western Barents Sea during the last deglaciation and the Holocene: a case study outside the Ingøydjupet trough

    Mauro Pau

    2016-05-01

    Full Text Available A lithological and foraminiferal study of newly acquired sediment cores outside the Ingøydjupet (Ingøy Deep trough has been carried out to improve constraints on the last deglacial history in the south-western Barents Sea. Three lithofacies and three foraminiferal facies were identified. The lowermost lithological unit is a diamicton interpreted as glacial till. It contains a low-abundance, ecologically mixed foraminiferal assemblage, presumably resulting from glacial reworking. Above the diamicton, a layer of ice-rafted debris (IRD, likely associated with intensive iceberg production, marks the initial destabilization of the marine-based ice sheet. At this time, ca. 15.6–15.0 Ky B.P., opportunistic foraminiferal species Nonionellina labradorica and Stainforthia spp. reached peak abundance. During the south-western Barents Sea ice-margin retreat, presumably corresponding to the Bølling interstadial, a sequence of glaciomarine laminations was deposited conformably on the layer of IRD. Sedimentation rates were apparently high (estimated about 0.4 cm per year and the foraminiferal fauna was dominated by Elphidium spp. and Cassidulina reniforme, species common for glacier-proximal environments. A hiatus at the top of the deglacial unit is likely linked to the high bottom-current activity associated with a strengthened inflow of Atlantic water masses into the Barents Sea. The uppermost lithological unit is represented by the Holocene marine sandy mud. It contains a high-abundance, high-diversity foraminiferal fauna with common cassidulinids, Cibicides spp., Epistominella pusilla and planktic species.

  2. Gérer l'interface entre ingénierie, didactique, pédagogie et dispositifs ouverts Interfacing open learning environments, didactics and pedagogy

    Guy Achard-Bayle

    2003-06-01

    Full Text Available Nous proposons de croiser le regard du didacticien linguiste et celui du spécialiste de l'utilisation des TIC pour la formation et de l'ingénierie de formation, afin d'analyser des dispositifs expérimentaux "ouverts" que nous avons pu observer de près. Le premier est un dispositif à distance basé sur une pédagogie du projet, le second relève de l'autoformation guidée en centre de ressources. Dans les deux cas on relève le rôle pivot du centre de ressources et la disparition du groupe-classe. Quelques points importants pour une approche des dispositifs ouverts se dégagent, entre autres tutorat et suivi des apprenants, rapport au temps (temps perdu, temps retrouvé, choix des ressources supports des apprentissages (outils de référence et matériaux pédagogiques. Nous plaiderons pour une meilleure gestion de l'interface entre ingénierie, didactique, pédagogie et dispositifs ouverts par une remobilisation du didacticien autour de quelques axes se dégageant de nos observations.We acted as linguists interested in didactics and specialists in the use of ICT to analyze two language learning environments we had an opportunity to closely follow. Both can be labeled as open learning systems relying on self directed learning. We point out the importance of the self access learning centre where learners come and the disappearance of the traditional group. Several relevant elements are analyzed such as tutoring and coaching of learners, changes in the relationship to time (wasting and finding time, choosing appropriate materials (reference tools or teaching materials. We will argue in favor of a more deliberate implication of didactics so as to better approach open learning situations and self directed learning.

  3. Desempenho do inhame (taro em plantio direto e no consórcio com crotalária, sob manejo orgânico Main development in direct planting and in conjunction with sun hemp under organic management

    Fábio Luiz de Oliveira

    2004-09-01

    Full Text Available Estudaram-se os efeitos do plantio direto em cobertura morta de aveia-preta e do consórcio com Crotalaria juncea, em sistema orgânico de produção de inhame, em ensaio na EE de Nova Friburgo (Pesagro-Rio, região serrana do estado do Rio de Janeiro. Utilizou-se o delineamento de blocos ao acaso com quatro repetições, em esquema fatorial 2 x 2, onde os tratamentos corresponderam ao: modo de plantio (direto ou convencional e modo de cultivo (monocultivo ou consórcio com crotalária. O cultivo consorciado com a leguminosa promoveu maior altura nas plantas do inhame, assim como reduziu a queima de folhas pelos raios solares. A população infestante de ervas espontâneas foi mais efetivamente controlada com a combinação entre consórcio e plantio direto. Nenhum dos tratamentos influenciou a produtividade do inhame, que foi considerada satisfatória, indicando o potencial do manejo orgânico adotado.An experiment was carried out in the upland region of Rio de Janeiro State, Brazil, to evaluate different planting systems on yam performance under organic management. A randomized blocks design was used with four replications, in a 2 x 2 factorial scheme comprising the treatments: soil tillage system (no-tillage or conventional and cropping system (monoculture or intercropping with Crotalaria juncea. Intercropping with C. juncea (sun hemp stimulated yam vegetative growth and reduced leaf blight caused by sun radiation. The weed population was reduced more effectively associating no-tillage and intercropping with sun hemp. None of the treatments affected yam yield, which was considered satisfactory indicating the potential of the organic management adopted.

  4. Correlação entre os teores de líber e fibras em caules de crotalária e malva Correlation between bast and fiber content in sunn hemp and malva stalks

    Anísio Azzini

    1986-01-01

    Full Text Available No presente estudo, estimou-se a correlação entre os teores de líber (casca e fibras em caules de crotalária (Crotalaria juncea L. e malva (Urena lobata L., com o objetivo de estabelecer um procedimento simples e rápido de análise de fibra. Os resultados obtidos mostraram que os teores de líber e fibra estão relacionados entre si, com alto nível de significância (p > 0,99 para as correlações entre essas duas características tecnológicas. Os coeficientes de correlação observados, de 0,84 e 0,79, respectivamente, para crotalária e malva, permitem a avaliação indireta do teor de fibra liberiana através do teor de líber, estabelecendo um procedimento simples e rápido de análise de fibra, a ser utilizado especificamente em programas de melhoramento genético.In this paper it was estimated the correlation between the bast and fiber contents in suns hemp (Crotalaria juncea L. and malva (Urena lobata L. stalks. The results showed that fiber contents are related with a high level of signification (p > 0.99 for the correlation between these two technological characteristics. The correlation coefficients observed were of 0.84 and 0.79, respectively to sunn hemp and malva. These high levels of correlation showed that the fiber content may be evaluated indirectly through the bast content, establishing a simple and rapid procedure for fiber determination of both species.

  5. Minimum-error quantum distinguishability bounds from matrix monotone functions: A comment on 'Two-sided estimates of minimum-error distinguishability of mixed quantum states via generalized Holevo-Curlander bounds' [J. Math. Phys. 50, 032106 (2009)

    Tyson, Jon

    2009-01-01

    Matrix monotonicity is used to obtain upper bounds on minimum-error distinguishability of arbitrary ensembles of mixed quantum states. This generalizes one direction of a two-sided bound recently obtained by the author [J. Tyson, J. Math. Phys. 50, 032106 (2009)]. It is shown that the previously obtained special case has unique properties.

  6. Response to “Comment on ‘Magnetic geometry and physics of advanced divertors: The X-divertor and the snowflake’ ” [Phys. Plasmas 21, 054701 (2014)

    Kotschenreuther, Mike; Valanju, Prashant; Covele, Brent; Mahajan, Swadesh

    2014-01-01

    Relying on coil positions relative to the plasma, the “Comment on ‘Magnetic geometry and physics of advanced divertors: The X-divertor and the snowflake’ ” [Phys. Plasmas 21, 054701 (2014)], emphasizes a criterion for divertor characterization that was critiqued to be ill posed [M. Kotschenreuther et al., Phys. Plasmas 20, 102507 (2013)]. We find that no substantive physical differences flow from this criteria. However, using these criteria, the successful NSTX experiment by Ryutov et al. [Phys. Plasmas 21, 054701 (2014)] has the coil configuration of an X-divertor (XD), rather than a snowflake (SF). On completing the divertor index (DI) versus distance graph for this NSTX shot (which had an inexplicably missing region), we find that the DI is like an XD for most of the outboard wetted divertor plate. Further, the “proximity condition,” used to define an SF [M. Kotschenreuther et al., Phys. Plasmas 20, 102507 (2013)], does not have a substantive physics basis to override metrics based on flux expansion and line length. Finally, if the criteria of the comment are important, then the results of NSTX-like experiments could have questionable applicability to reactors

  7. Response to “Comment on ‘Magnetic geometry and physics of advanced divertors: The X-divertor and the snowflake’ ” [Phys. Plasmas 21, 054701 (2014)

    Kotschenreuther, Mike; Valanju, Prashant; Covele, Brent; Mahajan, Swadesh [Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas 78712 (United States)

    2014-05-15

    Relying on coil positions relative to the plasma, the “Comment on ‘Magnetic geometry and physics of advanced divertors: The X-divertor and the snowflake’ ” [Phys. Plasmas 21, 054701 (2014)], emphasizes a criterion for divertor characterization that was critiqued to be ill posed [M. Kotschenreuther et al., Phys. Plasmas 20, 102507 (2013)]. We find that no substantive physical differences flow from this criteria. However, using these criteria, the successful NSTX experiment by Ryutov et al. [Phys. Plasmas 21, 054701 (2014)] has the coil configuration of an X-divertor (XD), rather than a snowflake (SF). On completing the divertor index (DI) versus distance graph for this NSTX shot (which had an inexplicably missing region), we find that the DI is like an XD for most of the outboard wetted divertor plate. Further, the “proximity condition,” used to define an SF [M. Kotschenreuther et al., Phys. Plasmas 20, 102507 (2013)], does not have a substantive physics basis to override metrics based on flux expansion and line length. Finally, if the criteria of the comment are important, then the results of NSTX-like experiments could have questionable applicability to reactors.

  8. The PCNA-associated factor KIAA0101/p15PAF binds the potential tumor suppressor product p33ING1b

    Simpson, Fiona; Lammerts van Bueren, Kelly; Butterfield, Natalie; Bennetts, Jennifer S.; Bowles, Josephine; Adolphe, Christelle; Simms, Lisa A.; Young, Joanne; Walsh, Michael D.; Leggett, Barbara; Fowles, Lindsay F.; Wicking, Carol

    2006-01-01

    The KIAA0101/p15 PAF /OEATC-1 protein was initially isolated in a yeast two-hybrid screen for proliferating cell nuclear antigen (PCNA) binding partners, and was shown to bind PCNA competitively with the cell cycle regulator p21 WAF . PCNA is involved in DNA replication and damage repair. Using polyclonal antisera raised against a p15 PAF fusion protein, we have shown that in a range of mammalian tumor and non-tumor cell lines the endogenous p15 PAF protein localises to the nucleus and the mitochondria. Under normal conditions no co-localisation with PCNA could be detected, however following exposure to UV it was possible to co-immunoprecipitate p15 PAF and PCNA from a number of cell lines, suggesting a UV-enhanced association of the two proteins. Overexpression of p15 PAF in mammalian cells was also found to protect cells from UV-induced cell death. Based on similarities between the behaviour of p15 PAF and the potential tumor suppressor product p33ING1b, we have further shown that these two proteins interact in the same complex in cell cultures. This suggests that p15 PAF forms part of a larger protein complex potentially involved in the regulation of DNA repair, apoptosis and cell cycle progression

  9. Evaluación de extractos de fique, coquito, sorgo y ruda como posibles bio-herbicidas Evaluation of cuban hemp, nut sedge, johnson grass and herb of grace extracts in weed control

    Liliana Osorio Salazar

    2009-04-01

    Full Text Available En experimentos completamente al azar en condiciones de laboratorio y campo, en Palmira, Valle del Cauca, se evaluó el efecto de extractos de Macrophylla furcraea Baker (fique, Cyperus rotundus L (coquito, Sorghum bicolor L (sorgo, y Ruta graveolens L (ruda sobre la germinación de semillas de las arvenses Bidens pilosa L (papunga y Amaranthus dubius Mart (bledo y del cilantro Coriandrum sativum L. Se obtuvieron los extractos por el método Soxhlet, utilizando agua, etanol y cloroformo como solventes. Los extractos obtenidos se evaluaron en tres diluciones (0, 5 y 10 % en pruebas de germinación de semillas de las arvenses y del cultivo. Se emplearon tres repeticiones de 50 semillas cada una y el testigo se regó con agua destilada. Los extractos etanólicos y clorofórmicos de coquito y fique en las diluciones al 5 y 10 % presentaron el mayor efecto inhibitorio en la germinación a los 21 días. El ensayo de campo demostró el efecto inhibitorio de los extractos etanólicos de fique y coquito en la emergencia de las semillas del cilantro. El análisis de metabolitos secundarios comprobó la presencia de compuestos reportados como altamente tóxicos en fique y en menor cantidad en coquito, aunque los extractos de éste fueron los que más inhibieron la germinación.The objective of this work was to evaluate the effect of the extracts of the species Macrophylla furcraea Baker (cuban hemp, Cyperus rotundus L (nut sedge, Sorghum bicolor L (johnson grass and Ruta graveolens L (herb of grace on seed germination of two weeds and one crop. The extracts were obtained by the Soxhlet method, using water, ethanol and chloroform as solvents. Each extract was evaluated in three dilutions (0, 5 and 10 % v/v and was applied to Bidens pilosa L (spanish needle, Amaranthus dubius Mart (spleen amaranth and Coriandrum sativum L (coriander seeds. Three replications of 50 seeds each one were used and the control was watered only with destilled water. The results

  10. SpoonEMF, une brique logicielle pour l'utilisation de l'IDM dans le cadre de la réingénierie de programmes Java5

    Barais , Olivier

    2006-01-01

    2 ième Journée sur l'Ingénièrie Dirigée par les Modèles; Ce document présente succinctement SpoonEMF, une brique logicielle pour l'utilisation de l'IDM dans le cadre de la réingénierie d'applications écrites en Java. L'accent dans cette courte présentation est mis sur les cas d'utilisation possibles de cette brique logicielle et l'intérêt des choix techniques retenus : le framework EMF pour l'expression du méta-modèle afin de favoriser l'interopérabilité avec d'autres outils et l'intégration ...

  11. Comment on "Comments on `The Euclidean gravitational action as black hole entropy, singularities and space-time voids'" [J. Math. Phys. 50, 042502 (2009)]-Schwarzschild black hole lives to fight another day

    Kundu, Prasun K.

    2017-11-01

    In a comment published several years ago in this journal, Mitra [J. Math. Phys. 50, 042502 (2009)] has claimed to prove that a neutral point particle in general relativity as described by the Schwarzschild metric must have zero gravitational mass, i.e., the mass parameter M0 of a Schwarzschild black hole necessarily vanishes. It is shown that the purported proof is incorrect. The error stems from a basic misunderstanding of the mathematical description of coordinate volume element in a differentiable manifold.

  12. Mercury pOIsonIng

    A case of mercury poisoning is reported and clinical observations of 6 .... fish ingested and occupational exposure. .... exposed to mercury as a result of inadequate industrial safety standards, and ... WHO Tech Rep Ser 1980; No. 674: 102-115.

  13. Viini noored arhitektid / Inge Laurik

    Laurik, Inge

    2001-01-01

    21. augustist Pärnu Muuseumi Aidas Viini noori arhitekte tutvustav näitus "innere szene wien". Näha saab 47 Viini arhitektuuribüroo koostatud prospekte, olustikufotosid ateljeede töökeskkonnast, videoklippi.

  14. Frakcja lipidowa i białkowa nasion konopi siewnych (C. sativa L. oraz jej korzystny wpływ na zdrowie człowieka = Lipid and protein fraction of hemp seed (C. sativa L. and its beneficial influence on human health

    Grzegorz Dąbrowski

    2016-09-01

      Abstrakt Wprowadzenie i cel pracy: Konopie siewne wykorzystywane są od tysięcy lat do produkcji włókien oraz oleju z nasion. W ostatnim czasie nasiona tej rośliny wykorzystuje się także do produkcji izolatów i hydrolizatów białek. Celem niniejszej pracy jest opisanie składu frakcji tłuszczowej i białkowej nasion konopi siewnych oraz potencjału zdrowotnego oleju oraz izolatów i hydrolizatów białkowych pochodzących z tego surowca. Skrócony opis stanu wiedzy: Nasiona konopi są bogatym źródłem oleju oraz białka. Skład oleju jest korzystny z żywieniowego punktu widzenia z uwagi na duży udział niezbędnych nienasyconych kwasów tłuszczowych (NNKT oraz korzystne proporcje kwasów n-6/n-3. Olej konopny zawiera także duże ilości związków bioaktywnych, takich jak fitosterole, karotenoidy, polifenole i tokoferole. Białko konopi cechuje się dobrym składem aminokwasów oraz jest źródłem bioaktywnych peptydów o działaniu antyoksydacyjnym. Podsumowanie: Ze względu na zawartość oleju o korzystnym składzie kwasów tłuszczowych i wartościowego białka, nasiona konopi powinny być coraz częściej wprowadzane do codziennej diety. Słowa kluczowe: konopie siewne, NNKT, bioaktywne peptydy, tokoferole, fitosterole, polifenole, karotenoidy   Abstract Introduction and purpose: Hemp are used for thousands of years to obtain the fiber and seed oil. Recently, the hemp seeds are also used for the production of protein hydrolysates and isolates. The aim of this study is to describe the composition of the fat and protein fractions. In addition health benefits of the consumption of the oil  and protein hydrolysates and isolates will be described. Brief description of the state of the knoweledge: Hemp seeds are a rich source of oil and protein. The oil composition is beneficial from a nutritional point of view due to the high content of essential fatty acids (EFAs in the optimal ratio of n-6 / n-3. Hemp oil also contains large amounts of a

  15. Comments on 'On the estimation of overwater bowen ratio from sea-air temperature difference. Reply to: Hsu, S.A. - A relationship between the Bowen ratio and sea-air temperature difference under unstable conditions at sea. J. Phys. Oceanogr. Vol. 28; p. 2222-2226'

    Sadhuram, Y.; Murty, T.V.R.; Sarma, Y.V.B.; Murty, V.S.N.

    stream_size 2 stream_content_type text/plain stream_name J_Phys_Oceanogr_31_1933.pdf.txt stream_source_info J_Phys_Oceanogr_31_1933.pdf.txt Content-Encoding ISO-8859-1 Content-Type text/plain; charset=ISO-8859-1 ...

  16. Ocorrência e aspectos ecológicos de metazoários parasitos de peixes do Lago do Parque do Ingá, Maringá, Estado do Paraná = Occurrence and ecological aspects of the metazoan fish parasites from Ingá lake, Maringá, Paraná State

    Marion Haruko Machado

    2007-07-01

    Full Text Available Nenhum estudo de peixes e parasitos foi realizado, até o momento, no Lago do Parque do Ingá que sofre influências antrópicas desde seu represamento, em 1970. Este trabalho analisou alguns aspectos ecológicos dos parasitos metazoários dos peixes deste lago. Dos peixes analisados, (69,5% estavam parasitados por pelo menos uma espécie de parasito. Foram encontrados 1.372 parasitos pertencentes à Nematoda (larvas e Platyhelminthes (Monogenea e Cestoda, sendo estes os mais prevalentes e numerosos. O encontro de larvas decestóides em Tilapia rendalli e Oreochromis niloticus confirma a importância destas espécies como participantes de níveis tróficos intermediários. A maior abundância de T. rendalli e O. niloticus,no local, pode ser um fator determinante no recrutamento de parasitos. O parasito aproveita-se das espécies de hospedeiros mais abundantes para garantir o desenvolvimento de seu ciclo de vida e também por serem os mais disponíveis à predação pelas aves piscívorasali presentes, o que torna o local de grande importância para a sustentação do ciclo de vida desses parasitos. A baixa diversidade de endoparasitos coletados pode ser justificada pela presença de metais pesados – Cu e Pb – no sedimento, o que deve estar interferindo nodesenvolvimento dos invertebrados, possíveis hospedeiros intermediários.Ingá lake was dammed in 1970 and, since then, no study on fish and parasites had been done, but it has suffered anthropic influences. This study analyzed some ecological aspects of the metazoan parasites form this lake. From analyzed fish, 69.5% had at least one species of parasite. Among them, 1.372 parasites were found, prevailing Nematoda (larvae and Platyhelminthes (Monogenea and Cestoda. The discovery of cestode larvae in Tilapia rendalli and Oreochromis nitolicus confirms the importance of these species as participants of intermediate trophic levels. The great number of Tilapia rendalli and Oreochromis nitolicus

  17. Entre culture générale et enjeux des métiers d'ingénieur : la diversité des enseignements en sciences humaines et sociales à l'École Centrale de Lyon

    Hourcade Nicolas

    2014-01-01

    Full Text Available Ce texte analyse le développement d'enseignements en sciences humaines et sociales à l'École Centrale de Lyon, établissement formant des ingénieurs généralistes. Très limités au milieu des années 1990, les cours de SHS constituent aujourd'hui un aspect significatif de la formation. La première spécificité de cette offre pédagogique est de comprendre un nombre relativement important de cours obligatoires, complétés par des activités optionnelles. Sa seconde particularité est de traiter de thématiques générales à côté de contenus classiques liés aux enjeux des métiers d'ingénieur. Sa troisième caractéristique est de s'appuyer sur une implication de l'équipe SHS dans les activités professionnalisantes, tout en les séparant des enseignements disciplinaires. Enfin, l'inscription des SHS à l'ECL s'effectue plus par l'enseignement que par la recherche, chaque membre de l'équipe étant rattaché à un laboratoire extérieur différent.

  18. ATLAS note ATL-COM-PHYS-2009

    Chekanov, S.; Boomsma, J.

    2009-01-01

    The program InvMass has been developed to perform a general model-independent search for new particles using the ATLAS detector at the Large Hadron Collider (LHC), a proton-proton collider at CERN. The search is performed by examining statistically significant variations from the Standard Model predictions in exclusive event classes classified according to the number of identified objects. The program, called InvMass, finds all relevant particle groups identified with the ATLAS detector and analyzes their production rates, invariant masses and the total transverse momenta. The generic code of InvMass can easily be adapted for any particle types identified with the ATLAS detector. Several benchmark tests are presented.

  19. Adequação de modelo aditivo-dominante em dois caracteres de crotalária: aditive-dominant in two traits of sunn hemp Adequacy of the model

    Manoel Albino Coelho de Miranda

    1991-01-01

    to the exploration of hybrid vigor in sunn hemp, since it is possible to control the polinization.

  20. Le français, clé de l’avenir professionnel de l’étudiant : exemple de la formation des ingénieurs en télécommunications

    Mª Ángeles Lence

    2014-12-01

    Full Text Available Cet article veut attirer l’attention sur l’importance de la langue française dans la formation des étudiants universitaires, non seulement au niveau académique pour qu’ils puissent poursuivre leurs études dans un pays francophone, mais aussi au niveau professionnel pour leur future immersion sur le marché de l’emploi. Dans le contexte de la globalisation qui impose la maîtrise de l’anglais comme un requis inexcusable dans les offres d’emploi, la connaissance d’une deuxième langue étrangère accorde une valeur de plus au curriculum des diplômés espagnols, en les mettant en conditions égales avec leurs homologues européens, en augmentant leurs possibilités de travail au niveau international, en les rendant enfin aussi compétitifs que les diplômés d’autres universités où le bagage de deux langues étrangères conditionne l’obtention du diplôme d’ingénieur. Comme exemple, nous exposons comment les étudiants peuvent apprendre le français dans les études actuelles de Grado en Ingénierie Technique de Télécommunications de l’Universitat Politècnica de València (UPV, en comparant en même temps avec l’apprentissage des langues dans une École homologue en France.

  1. Une expérience pédagogique du débat public en école d'ingénieur. Le cas du nucléaire

    Colmellere Cynthia

    2014-01-01

    Full Text Available Cette communication présente un dispositif pédagogique d'exercice de débat public autour d'un projet d'implantation d'un réacteur nucléaire. Cet exercice est mené depuis trois ans dans le cadre d'un cours de sociologie pour des ingénieurs de deuxième année à l'Ecole Centrale Paris. Il concerne un groupe d'une vingtaine d'élèves et s'inspire d'une situation réelle et actuelle : le projet d'implantation d'un réacteur nucléaire de type EPR à Penly (76. Dans cette contribution, nous présentons tout d'abord les enjeux de cette expérience pédagogique dans le contexte de notre établissement et les questions pédagogiques qu'elle pose. Dans une deuxième partie, nous détaillons les différentes séquences du cours qui servent à préparer ce débat. Dans la troisième, nous revenons sur le déroulement du débat et la phase de discussion critique entre les observateurs, les élèves et l'enseignante qui s'ensuit. Nous concluons sur les apports et les limites de cet exercice en les mettant en perspective avec les enjeux de l'enseignement des controverses scientifiques et techniques dans la formation des ingénieurs.

  2. Comment on: Measurement of the force exerted on the surface of an object immersed in a plasma. Eur. Phys. J. D 69: 91 (2015), DOI: 10.1140/epjd/e2015-50743-2

    Czarnetzki, Uwe; Tsankov, Tsanko V.

    2015-10-01

    Surfaces exposed to a plasma experience a certain pressure that pushes them away from the volume. This effect has been investigated experimentally in a recent article by Thomas Trottenberg, Thomas Richter, and Holger Kersten from Kiel University/Germany [Eur. Phys. J. D 69, 91 (2015)]. The experimental results are impressive and have actually drawn the attention of the community to an interesting question which so far has been largely ignored. In addition to their experimental results the Kiel group proposes also a rough concept in order to explain their findings which provides certainly a basic qualitative understanding of the physical processes involved. However, on a closer inspection the picture developed so far is not entirely satisfying and the problem seems to require a more fundamental approach. This comment shows that the effect of the wall pressure can be described exactly using only analytical methods. The physical situation is analyzed by three different approaches. First, the simple case of only one spatial dimension is presented in detail. Second, the case of spherical symmetry is analyzed by some simplifying assumptions in order to investigate the effect of higher dimensionality. Third, a formal derivation for arbitrary geometry is given. This general result includes the one-dimensional case but does not allow a convenient connection between the pressures at the wall and in the center. Finally, the results are summarized and some conclusions are drawn.

  3. Aproveitamento do nitrogênio (15N da crotalária e do milheto pelo milho sob plantio direto em Latossolo Vermelho de Cerrado Utilization of nitrogen (15N from sun hemp and millet by corn crop under no-tillage in Red Latosol of Cerrado

    Edson Cabral da Silva

    2006-06-01

    Full Text Available O cultivo de adubos verdes na entressafra altera a dinâmica e a recuperação do nitrogênio pelo milho no sistema solo-planta. O objetivo deste trabalho foi avaliar a eficiência de utilização do N da crotalária (Crotalaria juncea e do milheto (Pennisetum americanum, marcados com 15N, pelo milho cultivado sob diferentes doses de N em plantio direto, num Latossolo Vermelho de Cerrado. O estudo foi desenvolvido na fazenda experimental da Faculdade de Engenharia de Ilha Solteira-UNESP, Selvíria-MS, nos anos agrícolas 2001/02 e 2002/03. O delineamento experimental foi o de blocos casualizados, com 15 tratamentos e quatro repetições, dispostos em esquema fatorial 5 x 3, constituídos pela combinação de cinco doses de N (0, 30, 80, 130 e 180kg ha-1, na forma de uréia, aplicadas no estádio quatro folhas, e três sistemas de cobertura do solo: crotalária, milheto e o solo em pousio entressafra. O N inorgânico promoveu um efeito sinérgico na quantidade de N absorvida e no aproveitamento pelo milho do N da crotalária e do milheto. A crotalária, na média dos dois anos agrícolas, proporcionou, no milho cultivado sem a aplicação de N, um efeito equivalente à aplicação de 56,0 e 73,0kg ha-1 de N-uréia, comparado ao do milho cultivado sobre solo em pousio e em sucessão ao milheto, respectivamente. A produtividade de grãos aumentou de forma quadrática em função das doses de N, nos dois anos agrícolas.The cultivation of green manure in the fallow ground alter the dynamics and the recovery of the nitrogen by corn in the soil-plant system. The objective of this work was to evaluate the utilization of nitrogen (15N from sun hemp and millet by corn grown under different N rates in no-tillage in Red Latosol of Cerrado. The research was carried in the Experimental Farm of Faculty of Engineering, Sao Paulo State University (UNESP, Ilha Solteira, located in Selvíria-MS, Brazil, during the 2001/02 and 2002/03 growing season. The

  4. Adubação NPK e calagem na produção de massa verde e sementes de crotalária Effect of NPK fertilization and liming on the green matter and seed production of sunn hemp (Crotalaria juncea L.

    Antonio Luiz de Barros Salgado

    1984-01-01

    Full Text Available São relatados dois experimentos de campo visando avaliar o efeito de nitrogênio, fósforo e potássio na presença e na ausência de calcário, na produção de massa verde e de sementes de crotalária. Os experimentos foram realizados no Centro Experimental de Campinas e na Estação Experimental de Tatuí, em Latossolo Roxo, no ano agrícola de 1969/70. Os resultados obtidos mostram claramente que o efeito para a utilização do fósforo foi significativo em solos com menor teor deste elemento e que houve efeito altamente positivo para o emprego do calcário na localidade de Tatuí.Two field experiments were conducted in order to evaluate the effect of N, P, K fertilization, with and without liming, on the total green matter and seed production of sunn hemp (Crotalaria juncea L.. The experiments were done in the experimental stations of the Instituto Agronômico of State of São Paulo, Brazil, located in Campinas and Tatuí, during the years of 1969/1970, in soils of the group Latosol >. The results obtained indicated a positive effect of P fertilization on the sunn hemp yield, in the soils that presented less soil P content. Significant increases in yield were obtained with the application of dolomitic lime, specially in the experimental station of Tatuí.

  5. 18 January 2011 - Ing. Vittorio Malacalza, ASG Superconductors S.p.A, Italy in the LHC superconducting magnet test hall with Deputy Department Head L. Rossi, in the LHC tunnel at Point 5 and CMS experimental area with Spokesperson G. Tonelli.

    Maximilien Brice

    2011-01-01

    18 January 2011 - Ing. Vittorio Malacalza, ASG Superconductors S.p.A, Italy in the LHC superconducting magnet test hall with Deputy Department Head L. Rossi, in the LHC tunnel at Point 5 and CMS experimental area with Spokesperson G. Tonelli.

  6. The exhibition"La France au CERN" was inaugurated by Danièle Hulin, Directrice adjointe Secteur Physique, Chimie, Sciences pour l'Ingénieur (PCSI), Ministère délégué à l'Enseignement supérieur et à la recherche.

    Patrice Loïez

    2005-01-01

    The exhibition"La France au CERN" was inaugurated by Danièle Hulin, Directrice adjointe Secteur Physique, Chimie, Sciences pour l'Ingénieur (PCSI), Ministère délégué à l'Enseignement supérieur et à la recherche.

  7. High-Altitude Electromagnetic Pulse (HEMP) Testing

    2015-07-09

    Document (CPD), Army Regulation (AR) 70-751*, Independent Evaluation Plan ( IEP )/Independent Assessment Plan (IAP) criteria, and U.S. Army Nuclear...in accordance with IEP Independent Evaluation Plan kHz kilohertz km kilometer kV/m kilovolts per meter LCNS Life-Cycle Nuclear

  8. Hemp nanocellulose: fabrication, characterisation and application

    Dasong, Dai

    2015-01-01

    This thesis was submitted for the award of Doctor of Philosophy and was awarded by Brunel University London Nanocellulose has gained lots of attentions in recent years due to the development of nanotechnology. Thousands of publications have been reported about the fabrication, characterization and application of nanocellulose, among which most of the nanocelluloses were fabricated from the microcrystalline cellulose (MCC) or pulp, and only two methods about the nanocellulose fabrication ha...

  9. Development of hemp fibre - PP nonwoven composites

    Hargitai, H

    2006-01-01

    Full Text Available to the direction of carding. A strong decrease in three point bending properties was noticed after immersing the composite samples in distilled water for 19 days, while the impact strength increased. Double carding of raw materials resulted in a decreased...

  10. La démarche de l’« Ingénierie de la formation » appliquée dans le contexte de la didactique du FLE

    Nicoleta-Loredana MOROSAN

    2012-12-01

    Full Text Available Le but de cette présentation est de faire le bilan de notre réflexion occasionnée par le stage «Ingénierie de la formation» organisé par le Centre régional francophone pour l’Europe centrale et orientale (CREFECO de l’Organisation Internationale de la Francophonie (OIF et déroulé à Sofia, du 18 au 22 juin 2012. Le séminaire a été cordonné par le formateur français Régis CRISTIN, docteur en sciences du langage. Les participants à ce stage, au nombre de 15, ont été des enseignants de FLE venant de différents établissements d’éducation de cinq pays de l’Europe centrale et orientale, à savoir l’Albanie, l’Arménie, la Bulgarie, la Moldavie et la Roumanie.

  11. Material development in the SI{sub 3}N{sub 4} system using glass encapsulated Hip`ing. Final report, Phase 2: DOE/ORNL Ceramic Technology Project

    Corbin, N.D.; Sundberg, G.J.; Siebein, K.N.; Willkens, C.A.; Pujari, V.K.; Rossi, G.A.; Hansen, J.S.; Chang, C.L.; Hammarstrom, J.L.

    1992-04-01

    This report covers a two-year program to develop fully dense Si{sub 3}N{sub 4} matrix SiC whisker composites with enhanced properties over monolithic Si{sub 3}N{sub 4} materials. The primary goal was to develop a composite with a fracture toughness > 10 MPa{radical}m, capable of using high pressure glass encapsulated HIP`ing. Coating methods were developed to apply thin (<150nm) stoichiometric BN layers to SiC whiskers and also to apply a dual coating of SiC over carbon to the whiskers. Fracture toughness of the composites was determined to increase as the quantity of whiskers (or elongated grains) with their axis perpendicular to the crack plane increased. Of the interface compositions evaluated in this effort, carbon was determined to be the most effective for increasing toughness. The highest toughnesses (6.8--7.0 MPa{radical}m) were obtained with uniaxially aligned carbon coated whiskers. There was no evidence of the carbon coating compromising the oxidation resistance of the composites at 1370{degree}C.

  12. PhysDoc: A Distributed Network of Physics Institutions: Collecting, Indexing, and Searching High Quality Documents by Using Harvest; The Dublin Core Metadata Initiative: Mission, Current Activities, and Future Directions; Information Services for Higher Education: A New Competitive Space; Intellectual Property Conservancies.

    Severiens, Thomas; Hohlfeld, Michael; Zimmermann, Kerstin; Hilf, Eberhard R.; von Ossietzky, Carl; Weibel, Stuart L.; Koch, Traugott; Hughes, Carol Ann; Bearman, David

    2000-01-01

    Includes four articles that discuss a variety to topics, including a distributed network of physics institutions documents called PhysDocs which harvests information from the local Web-servers of professional physics institutions; the Dublin Core metadata initiative; information services for higher education in a competitive environment; and…

  13. Ocorrência e aspectos ecológicos de metazoários parasitos de peixes do Lago do Parque do Ingá, Maringá, Estado do Paraná - DOI: 10.4025/actascibiolsci.v29i3.507 Occurrence and ecological aspects of the metazoan fish parasites from Ingá lake, Maringá, Paraná State - DOI: 10.4025/actascibiolsci.v29i3.507

    Marion Haruko Machado

    2007-12-01

    Full Text Available Nenhum estudo de peixes e parasitos foi realizado, até o momento, no Lago do Parque do Ingá que sofre influências antrópicas desde seu represamento, em 1970. Este trabalho analisou alguns aspectos ecológicos dos parasitos metazoários dos peixes deste lago. Dos peixes analisados, (69,5% estavam parasitados por pelo menos uma espécie de parasito. Foram encontrados 1.372 parasitos pertencentes à Nematoda (larvas e Platyhelminthes (Monogenea e Cestoda, sendo estes os mais prevalentes e numerosos. O encontro de larvas de cestóides em Tilapia rendalli e Oreochromis niloticus confirma a importância destas espécies como participantes de níveis tróficos intermediários. A maior abundância de T. rendalli e O. niloticus, no local, pode ser um fator determinante no recrutamento de parasitos. O parasito aproveita-se das espécies de hospedeiros mais abundantes para garantir o desenvolvimento de seu ciclo de vida e também por serem os mais disponíveis à predação pelas aves piscívoras ali presentes, o que torna o local de grande importância para a sustentação do ciclo de vida desses parasitos. A baixa diversidade de endoparasitos coletados pode ser justificada pela presença de metais pesados – Cu e Pb – no sedimento, o que deve estar interferindo no desenvolvimento dos invertebrados, possíveis hospedeiros intermediários.Ingá lake was dammed in 1970 and, since then, no study on fish and parasites had been done, but it has suffered anthropic influences. This study analyzed some ecological aspects of the metazoan parasites form this lake. From analyzed fish, 69.5% had at least one species of parasite. Among them, 1.372 parasites were found, prevailing Nematoda (larvae and Platyhelminthes (Monogenea and Cestoda. The discovery of cestode larvae in Tilapia rendalli and Oreochromis nitolicus confirms the importance of these species as participants of intermediate trophic levels. The great number of Tilapia rendalli and Oreochromis

  14. Drypac-ing waste away at Sellafield

    Anon.

    1997-01-01

    The Sellafield Drypac Plant (SDP) is designed to treat intermediate level wastes stored on the Sellafield site in the UK. SDP is a key component in the overall strategy of encapsulating ILW for future disposal in an underground repository. Civil work on the plant has started and it is scheduled to begin active operations in 2002. (UK)

  15. Idea juht eitas maksupettust / Inge Rumessen

    Rumessen, Inge

    2002-01-01

    Reklaamiagentuuri Idea juht Mark Eikner eitas kohtuistungil seost mitmemiljonilise maksupettuse skeemiga möödunud kohalike valimiste ajal. Kohtuprotsess Meelis Siidirätsepa üle, kes OÜ Rescue juhina jättis tasumata 1,5 milj. krooni käibemaksu

  16. ING4 Loss in Prostate Cancer Progression

    2016-10-01

    it in the desired 245 PCR tube with the water, and then dotting ~1 uL on a labeled fresh LB agar (+ amp ) plate to keep track 246 of the colony. A...using kinetic labeling techniques vs decay following administration of transcriptional inhibitors. Analytical biochemistry 198, 19-29. Heer, R...prostate tissue. Journal of cellular biochemistry 91, 196-205. Valdez, J. M., Zhang, L., Su, Q., Dakhova, O., Zhang, Y., Shahi, P., Spencer, D. M

  17. All aboard the Safety Train(ing)!

    Rosaria Marraffino

    2015-01-01

    Would you like to influence CERN’s safety courses? Do you want to help build better training courses? If your answer is yes to one or both of these questions: now is the time! The Safety Training section is looking for volunteers from the whole CERN community to test new courses before they go online for all members of the personnel.    The Safety Training section is redesigning the CERN e-learning package in order to adopt a more educational approach and to make the courses a more enjoyable experience. The section is now calling for volunteers. “We know we can do much more with testers’ help and feedback,” explains Christoph Balle, Safety Training section leader. “By having the end users actively involved in the process, we’ll achieve our goal of communicating safety in the best possible way. As the volunteers will play an active role in the development of the courses, they will be providing a service to the whole community.&am...

  18. Ühiskonnakriitika kinos / Inge Pitsner

    Pitsner, Inge

    2004-01-01

    Baltimaade dokfilmiprogramm "Subjektiivne kaamera", mis tutvustab uuemaid provokatiivseid, poleemikat tekitavaid autorikeskseid filme. See on osa Tallinnas toimuvast 8. Läänemere Dokumentalistika Foorumist

  19. SIP-ing the elixir of youth.

    Mair, William; Steffen, Kristan K; Dillin, Andrew

    2011-09-16

    AMP-activated protein kinase (AMPK) is a conserved cellular fuel gauge previously implicated in aging. In this issue, Lu et al. (2011) describe how age-related deacetylation of Sip2, a subunit of the AMPK homolog in yeast, acts as a life span clock that can be wound backward or forward to modulate longevity. Copyright © 2011 Elsevier Inc. All rights reserved.

  20. through Slicing, DryIng and Packagi.

    plastic containers and storedjor nine monthl:. with observation 'carried in ... high value sugars for domestic consumption, in- house at ambient conditions in ... Availability of sweet potato roots is very sea- Shinyanga town in Tanzania in the ...

  1. TRACE-ing human trafficking : Project Findings

    Rijken, Conny; Pijnenburg, Annick

    2016-01-01

    Human trafficking is one of the largest criminal enterprises in the world. It is a multi-billion-dollar crime of global scale. This is because human trafficking as a criminal enterprise continues to evolve as a high profit-low risk business for perpetrators and challenges policy makers, law

  2. Lnc-ing inflammation to disease

    Magagula, L

    2017-08-01

    Full Text Available by RNAi more than by antisense oligonucleotides. Nucleic Acids Res. 44, 863–877 doi:10.1093/nar/gkv1206 75 Zhen, S., Hua, L., Liu, Y.-H., Sun, X.-M., Jiang, M.-M., Chen, W. et al. (2017) Inhibition of long non-coding RNA UCA1 by CRISPR/Cas9 attenuated...

  3. Muinasjutt köideteks / Inge Teder

    Teder, Inge, 1931-

    2005-01-01

    Rahvusvahelisest köitekunsti näitusest ""Scripta manent III" Eesti Tarbekunsti- ja Disainimuuseumis. Raamatust "Maailma parim asi", mis sisaldab eesti laste kirjutatud muinasjutte. Pikemalt Kaire Oldi, Külli Grünbach-Seina ja Jaana Päeva töödest

  4. "Kaali saladus" sai Ungaris preemia / Inge Pitsner

    Pitsner, Inge

    2003-01-01

    Populaarteaduslik Eesti-Läti ühisfilm Kaali meteoriidiplahvatusest "Kaali saladus" : stsenarist ja režissöör Urmas E. Liiv : operaator Ago Ruus : produtsent Riho Västrik, sai teadusfilmide festivalil Szolnokis kolmanda koha. R. Västrik valmistab ette uut dokfilmi "Middendorffi jälgedes". Sama ka : Teleleht nr. 45, lk. 12

  5. Ravimid, risk, raha & tervis / Inge Pitsner

    Pitsner, Inge

    2008-01-01

    Ravimifirma Roche Eesti OÜ tegevjuht Kadri Mägi selgitab ravimiäri toimemehhanisme ning põhjuseid, miks ravimitööstus on riskantne ja kallis valdkond. Lisa: Mis on farmakoökonoomika?; Roche Eesti kontor

  6. Comparación entre redes de fibras sintéticas y redes de fibras de cáñamo para el refuerzo de muros de albañileria = Comparison between synthetic fiber networks and hemp fiber networks for the reinforcement of masonry walls

    Alessandra Vilardi

    2016-12-01

    Full Text Available La existencia de una gran cantidad de edificios antiguos ha movilizado la investigación para estudiar nuevos sistemas de refuerzo a aquellas construcciones que sean dañadas por decadencia fisiológica o por terremoto. El presente documento demuestra la eficacia de un sistema de refuerzo innovador para los muros de mampostería, constituyentes los elementos estructurales de los edificios históricos. Se hace una comparación entre unas redes bidireccionales de fibras sintéticas tradicionales y las de fibras naturales, ambas pegadas a las dos fachadas del muro con matriz de mortero. El resultado muestra la aplicación de las fibras de cáñamo como refuerzo sísmico y una mayor compatibilidad de estas con el material que caracterizan los edificios antiguos. Abstract The existence of a large number of old buildings has mobilized research to study new systems of reinforcement to those buildings that are damaged by physiological decay or earthquake. This document demonstrates the effectiveness of an innovative reinforcement system for masonry walls, which are the structural elements of historic buildings. A comparison is made between bidirectional networks of traditional synthetic fibers and those of natural fibers, both glued to the two facades of the wall with mortar matrix. The result shows the application of hemp fibers as seismic reinforcement and a greater compatibility of these with the material that characterize the old buildings.

  7. Supplement to the paper 'Quadratic Sagnac effect — the influence of the gravitational potential of the Coriolis force on the phase difference between the arms of a rotating Michelson interferometer (an explanation of D C Miller's experimental results, 1921 – 1926)' (Usp. Fiz. Nauk185 431 (2015) [Phys. Usp.58 398 (2015)])

    Malykin, G B; Pozdnyakova, V I

    2015-01-01

    The paper 'Quadratic Sagnac effect — the influence of the gravitational potential of the Coriolis force on the phase difference between the arms of a rotating Michelson interferometer (an explanation of D C Miller's experimental results, 1921 – 1926)' (Usp. Fiz. Nauk 185 431 (2015) [Phys. Usp. 58 398 (2015)]) is amended and supplemented with information concerning earlier work on the influence of rotation on Michelson – Morley's nonzero results. (letters to the editors)

  8. Effects of diets containing hemp seeds or hemp cake on fatty acid ...

    Esnart Mukumbo

    2018-02-23

    Feb 23, 2018 ... (seeds or cake) on milk production, fatty acid (FA) profile, and .... PUFAs, which are rich in two essential FAs, namely LA (18:2 n-6) and ALA. ...... Study on safety assessment and antioxidant function in serum of ... Dietary effect of silage type and combination with camelina seed on milk fatty acid profile.

  9. Early bronchodilator action of glycopyrronium versus tiotropium in moderate-to-severe COPD patients: a cross-over blinded randomized study (Symptoms and Pulmonary function in the moRnING

    Marin JM

    2016-06-01

    Full Text Available Jose M Marin,1 Kai M Beeh,2 Andreas Clemens,3 Walter Castellani,4 Lennart Schaper,5 Dinesh Saralaya,6 Anthony Gunstone,7 Ricard Casamor,8 Konstantinos Kostikas,3 Maryam Aalamian-Mattheis3 1University Hospital Miguel Servet, IISAragón, CIBERES, Zaragoza, Spain; 2Insaf Respiratory Research Institute, Wiesbaden, Germany; 3Novartis Pharma AG, Basel, Switzerland; 4Hospital Piero Palagi, Fiorenze, Italy; 5Research Institute and Practice, Berlin-Brandenburg, Germany; 6Bradford Teaching Hospitals NHS Foundation Trust, Bradford, UK; 7Staploe Medical Center, Soham, Cambridge, UK; 8Novartis Farmaceutica SA, Barcelona, Spain Background: Morning symptoms associated with COPD have a negative impact on patients’ quality of life. Long-acting bronchodilators with rapid onset may relieve patients’ symptoms. In the Symptoms and Pulmonary function in the moRnING study, we prospectively compared the rapid onset bronchodilator profile of glycopyrronium (GLY and tiotropium (TIO during the first few hours after dosing in patients with moderate-to-severe COPD.Methods: Patients were randomized (1:1 to receive either once-daily GLY (50 µg or TIO (18 µg and corresponding placebos in a cross-over design for 28 days. The primary objective was to demonstrate the superiority of GLY versus TIO in area under the curve from 0 to 4 hours (AUC0-4h forced expiratory volume in 1 second (FEV1 after the first dose. The secondary objective was to compare GLY versus TIO using the patient reported outcomes Morning COPD Symptoms Questionnaire 3 hours post-inhalation.Results: One-hundred and twenty-six patients were randomized (male 70.2%; mean age 65.7 years and 108 patients completed the study. On Day 1, GLY resulted in significantly higher FEV1 AUC0-4h after the first dose versus TIO (treatment difference [Δ], 0.030 L, 95% confidence interval 0.004–0.056, P=0.025. Improvements in morning COPD symptoms from baseline at Days 1 and 28 were similar between GLY and TIO. Post hoc

  10. Un episodio del pensamiento francés de la autonomía. Benjamin Constant y las idées très ingénieuses

    Francisco Gelman Constantin

    2014-03-01

    Full Text Available UN EPISODIO DEL PENSAMIENTO FRANCÉS DE LA AUTONOMÍA Benjamin Constant y las idées très ingénieuses   Francisco Gelman Constantin Facultad de Filosofía y Letras, Universidad de Buenos Aires     Abstract – This paper attempts a consideration of the significance of Benjamin Constant’s aesthetic thoughts within the context of the history of the concept of “aesthetic autonomy”. With that in mind it reevaluates his transformation of the German tradition, by way of its binding to the social theory corresponding to the cultural and historical analysis of early French Romanticism. Taking the coinage of the expression “art for art’s sake” as a starting point, this paper reconstructs the whole of Constant’s thought-system, as well as its exchanges with some of his contemporaries –namely Mme. de Staël and Henry Crabb Robinson– in the means of understanding the proper reach of the conceptual novelties brought in by him, as can be seen from the standing point of Begriffsgeschichte. The paper deals not only with his postulates referring specifically to a negative relationship towards the mercantile society, but also with the analogies he establishes between art, love, religion and morality, while it furthermore examines his theory of social autonomy. The reflexive setting together of this different elements, assembled from his political essays, his journals, the novel Adolphe and other writings, brings to the light a general form of a thought of the autonomous, which explains the manner in which Constant understands aesthetic autonomy in particular, by way of his collaboration and dissent with his European colleagues.   Keywords: autonomy; Constant; art for art’s sake; Begriffsgeschichte; religion     Resumen – Este trabajo se propone reconsiderar la importancia de las reflexiones estéticas de Benjamin Constant en el contexto de la historia del concepto de autonomía estética. Para ello reevalúa las transformaciones

  11. DRAWING MUSIC! ANAL Y Z ING AN EXTRACURRICULAR ACTIVITY OF VISUALI Z ING A CONCERT

    Váradi, Judit

    2018-01-01

    Full Text Available According to the literature and recent studies, a high number of encounters with classical music during childhood and adolescence in the context of positive feelings closely correlates with the formation of classical music competencies. During the investigation of primary students’ attitudes towards classical music, it has been revealed that those who have more opportunities to enter music education will come closer to understanding classical music. At the University of Debrecen Faculty of Music, we have organised and staged various educational youth performances in the last decades. Our goal is to get elementary school children acquainted with live music, classical instruments. A key element of our mission is to form the preferences of children and young people who do not participate in art education, so that they may become interested and sophisticated adults. In our paper we analysis the creations of the drawing competition what connects in theme with the youth concert.

  12. "Miss"ing Me and "Ms"ing the Other: Courtesy Titles for Women in Englishes

    Winter, Joanne; Pauwels, Anne

    2007-01-01

    The introduction and spread of "Ms" as the courtesy address title for women is a cornerstone of feminist linguistic planning for English. Its introduction aimed to eradicate the discriminatory inequity in the address system that exposed women through their (non)marital relationship with men. The understanding, use and impact of the courtesy title…

  13. f Mo fingerl ortality ings in ch asses n varyi hanges ssment ing sal s ...

    sunny

    bioma lead. (Bhup. 410805622606 ccess under the ournal of E reochro and inf oxicity. - Allah Kaf of Lagos, P.M. 10 November, 2 d protection nce of salinit nce and rela nst O. niloti t chemical. C ls of 2, 12, 1 by Probit. Mo. 35 ppt within there was a s imilarly, the significance o confer pr ence on t icochemical ls and pest.

  14. 晚清戊戌維新前官民對英國教育的引介初探 The Introduction of British Education in Late Ch’ing China Before 1898

    周愚文 Yu-Wen Chou

    2017-03-01

    Full Text Available 在清光緒早期使英外交官介紹英國教育之前,19 世紀起即已有傳教士及官民編著史地書 籍介紹之,本研究據此分析其對英國教育的引介。研究發現戊戌維新前,有24種書記錄了英 國教育措施,其要點如下: 一、範圍以中小學及大學最多,少數兼及幼兒園、軍校、其他類學校及教育行政機關。 二、地區以英格蘭為主,蘇格蘭次之。 三、中小學方面,以小學為主,內容涵蓋其慈善性質、入學年齡、校數、人數、學費、 學習內容、男女分校,兼及免費及強迫。但未注意《小學教育法》公布後,形成的董事會學 校與自願學校雙元制及其影響。 四、大學方面,多介紹牛津、劍橋、愛丁堡及都柏林等老大學的分布、名稱及數量。少 數述及其學習內容、考試、學位等第及教師。但對於大學與所屬學院的關係為何、三地體制 有所不同,及19 世紀後半新興的地方級學院等問題,多未提及。 五、諸書戊戌維新前已出版,且後人曾閱讀或引用,但實際流通量與影響不易評估。 六、此期透過遊記去理解英國方式,近似比較教育「旅人故事時期」的作法。 七、因英制偏地方分權而分歧複雜,清人很難一窺全貌,諸書僅是初步、片段的介紹; 且因社會仇外,故此階段無法進行教育借入。 The aim of this study was to explore the introduction of British education in late Ch’ing China before 1898. Twenty-four historical and geographical books and traveling records written by priests, officials, and intellectuals were analyzed. The main findings were as follows. (1 The focus was on elementary and secondary schools and universities and colleges. Few authors mentioned kindergartens, military academies, other schools, or administrative authorities. (2 The educational establishments in England were focused, and some in Scotland and

  15. Preface: phys. stat. sol. (b) 243/5

    Artacho, Emilio; Beck, Thomas L.; Hernández, Eduardo

    Between 20 and 24 June 2005 the Centre Européen de Calcul Atomique et Moléculaire - or CECAM, as it is more widely known - hosted a workshop entitled State-of-the-art, developments and perspectives of real-space electronic structure methods in condensed-matter and chemical physics, organized with the support of CECAM itself and the ?k network. The workshop was attended by some forty participants coming from fifteen countries, and about thirty presentations were given. The workshop provided a lively forum for the discussion of recent methodological developments in electronic structure calculations, ranging from linear-scaling methods, mesh techniques, time-dependent density functional methods, and a long etcetera, which had been our ultimate objective when undertaking its organization.The first-principles simulation of solids, liquids and complex matter in general has jumped in the last few years from the relatively confined niches in condensed matter and materials physics and in quantum chemistry, to cover most of the sciences, including nano, bio, geo, environmental sciences and engineering. This effect has been propitiated by the ability of simulation techniques to deal with an ever larger degree of complexity. Although this is partially to be attributed to the steady increase in computer power, the main factor behind this change has been the coming of age of the main theoretical framework for most of the simulations performed today, together with an extremely active development of the basic algorithms for its computer implementation. It is this latter aspect that is the topic of this special issue of physica status solidi.There is a relentless effort in the scientific community seeking to achieve not only higher accuracy, but also more efficient, cost-effective and if possible simpler computational methods in electronic structure calculations [1]. From the early 1990s onwards there has been a keen interest in the computational condensed matter and chemical physics communities in methods that had the potential to overcome the unfavourable scaling of the computational cost with the system size, implicit in the momentum-space formalism familiar to solid-state physicists and the quantum chemistry approaches more common in chemical physics and physical chemistry. This interest was sparkled by the famous paper in which Weitao Yang [2] introduced the Divide and Conquer method. Soon afterwards several practical schemes aiming to achieve linear-scaling calculations, by exploiting what Walter Kohn called most aptly the near-sightedness of quantum mechanics [3], were proposed and explored (for a review on linear-scaling methods, see [4]). This search for novel, more efficient and better scaling algorithms proved to be fruitful in more than one way. Not only was it the start of several packages which are well-known today (such as Siesta, Conquest, etc.), but it also leads to new ways of representing electronic states and orbitals, such as grids [5, 6], wavelets [7], finite elements, etc. Also, the drive to exploit near-sightedness attracted computational solid state physicists to the type of atomic-like basis functions traditionally used in the quantum chemistry community. At the same time computational chemists learnt about plane waves and density functional theory, and thus a fruitful dialogue was started between two communities that hitherto had not had much contact.Another interesting development that has begun to take place over the last decade or so is the convergence of several branches of science, notably physics, chemistry and biology, at the nanoscale. Experimentalists in all these different fields are now performing highly sophisticated measurements on systems of nanometer size, the kind of systems that us theoreticians can address with our computational methods, and this convergence of experiment and theory at this scale has also been very fruitful, particularly in the fields of electronic transport and STM image simulation. It is now quite common to find papers at the cutting edge of nanoscience and nanotechnology co-authored by experimentalists and theorists, and it can only be expected that this fruitful interplay between theory and experiment will increase in the future.It was considerations such as these that moved us to propose to CECAM and ?k the celebration of a workshop devoted to the discussion of recent developments in electronic structure techniques, a proposal that was enthusiastically received, not just by CECAM and ?k, but also by our invited speakers and participants. Interest in novel electronic structure methods is now as high as ever, and we are therefore very happy that physica status solidi has given us the opportunity to devote a special issue to the topics covered in the workshop. This special issue of physica status solidi gathers invited contributions from several attendants to the workshop, contributions that are representative of the range of topics and issues discussed then, including progress in linear scaling methods, electronic transport, simulation of STM images, time-dependent DFT methods, etc. It rests for us to thank all the contributors to this special issue for their efforts, CECAM and ?k for funding the workshop, physica status solidi for agreeing to devote this special issue to the workshop, and last but not least Emmanuelle and Emilie, the CECAM secretaries, for their invaluable practical help in putting this workshop together

  16. PHYS 801 course notes. Introduction to nuclear physics

    Buskulic, Damir

    2013-01-01

    This document gathers notes taken during a course of nuclear physics given by Daniel Decamp in 2013. It addresses the nucleus general characteristics (nucleons), the issues of nucleus mass and of bound energy, the liquid drop model, and applications. The next part addresses the dimension of nuclei and nuclear density: Rutherford scattering (scattering of a charged particle by a nucleus, particle deflection angle), notion of cross section (probability of scattering at a given angle, experimental verifications, generalisation of the notion of cross section), and charge distribution within the nucleus (density of final states, differential cross section of elastic scattering, experimental results, nuclear density). The next part addresses radioactivity: generalities, energetic conditions, mass parabola, law of radioactivity (fundamental law, half-life, line width, decay products, natural radioactivity and radioactive families). The next parts address applications of radioactivity: carbon-14 dating, dating of rocks and meteorites), artificial radioactivity (notion of cross section, production of radioactive nuclei), the theoretical approach to radioactivity (semi-conventional BKW approach, other calculation method, Gramow's theory of radioactivity, Fermi's theory of radioactivity), and nuclear models with models based on independent particles (Fermi model, layer model and its applications) and collective models (rotational and vibrational models)

  17. Preface: phys. stat. sol. (a) 202/7

    Pollak, Fred H.; Misiewicz, Jan; Sitarek, Piotr

    2005-05-01

    We have recently observed a growing interest in using the powerful technique of optical modulation spectroscopy. These applications are related mostly to the characterization of low dimensional semiconductor structures and devices based on them.The International Workshop on Modulation Spectroscopy of Semiconductor Structures (MS3) at the beginning of July 2004 gathered in Wrocaw (in the southwest part of Poland) almost 40 participants, half of them from abroad. The 8 invited and 16 contributed talks were presented by the leaders of research teams from the USA, Japan, Taiwan, Canada, Germany, France, the Netherlands, Sweden, Ireland, Russia, Lithuania and Poland. Part of the MS3 workshop was held at the Laboratory of Advanced Optical Spectroscopy, Institute of Physics, Wrocaw University of Technology, where discussions on technical matter of the modulation spectroscopy were carried out in a relaxing atmosphere over a cup of coffee.The topics of the MS3 workshop included: advantages of photoreflectance, electroreflectance, contactless electroreflectance, thermoreflectance, differential reflectance and wavelength-modulated surface photovoltage spectroscopy. The applications of the above methods to investigate transistor, diode and laser structures including VCSELs, low dimensional structures of both wings of the spectrum, i.e. wide band gap materials like GaN, AlGaN, ZnO and low band gap materials such as GaInN(Sb)As, InAs, InSb, and FeSi2 were demonstrated.It is our great pleasure to publish the most interesting of the MS3 workshop presentations in this issue of physica status solidi (a).The organizers acknowledge Wrocaw University of Technology, the Center of Exellence CEPHONA from the Institute of Electron Technology in Warsaw and the Polish Committee for Scientific Research for financial support of the workshop.

  18. Preface: phys. stat. sol. (c) 1/7

    Cheikhrouhou, Abdelwaheb

    2004-05-01

    The Third International Conference on Magnetic and Superconducting Materials (MSM03) belongs to a series of conferences, held biannually, aiming at providing a forum to the scientists in the magnetic and superconducting materials areas over the world.The first conference of the series (MSM99) was held in Iran with the proceedings published by World Scientific in 2000, and the second conference (MSM01) was held in Jordan with the proceedings published in Physica B 321 (2002).MSM03 was organized by the Materials Physics Laboratory, Sfax University (Laboratoire de Physique des Matériaux de la Faculté des Sciences de Sfax), with many domestic and international supporting institutions. It was held in Monastir (Tunisia), 1-4 September 2003, with over 150 participants and keynote lecturers attending from the following countries: Algeria, Austria, China, Czech Republic, Egypt, France, Germany, Hungary, Iran, Italy, Japan, Jordan, Morocco, Netherlands, Pakistan, Poland, Russia, Spain, Sudan, Sultanate of Oman, Taiwan, Tunisia, United Kingdom and United States of America.Altogether, about 170 papers on a variety of subjects relevant to the topic of the conference were presented, out of which 42 were keynote lectures. The submissions were peer-reviewed, and ultimately 115 articles were selected for publication in this journal. However, it must be noted that 13 of 39 keynote speakers did not submit their manuscripts for publication. Invited and other speakers were distinguished members of the international scientific community who are interested in pure sciences and materials research, and involved in the fabrication, characterization and investigation of the physical properties of magnetic and superconducting materials. High-caliber scientists attended the conference contributing to its success and the event resulted in new international relationships in research and cooperation. The Chairman of the Organizing Committee was Professor Abdelwaheb Cheikhrouhou, Materials Physics Laboratory, Sciences Faculty of Sfax (Tunisia) and the Co-Chairmen were Professor Sami Mahmood, Dean of Sciences at Yarmouk University (Jordan) and Professor Mohamed Akhavan from the Sharif University of Technology (Iran). The four-day conference consisted of several oral and poster sessions, followed by social programs in the evenings. The success of the event could be measured during the closing session on the last day, when several delegates emphasized the high-quality science that had been evident at the conference. A post conference three-day tour to the south of Tunisia (Matmata, Douz City: the gate of desert and the mountains oasis: Tamerza, Mides and Chebika) was also arranged. The conference was generously sponsored by: - The Tunisian Ministry of High Education, Scientific Research and Technology - The Tunisian Secretary of State for Scientific Research and Technology - The Tunisian National Office of Tourism - The Abdus Salam International Centre for Theoretical Physics (ICTP) - French Institute for Cooperation in Tunisia - Tunisian-Italian Scientific Partnership - British Gas - Tunisian Society for Electricity and Gas - Imex Olive Oil -Confiserie TRIKI Le Moulin The next MSM conference in 2005 will be held in Morocco.

  19. 75 FR 23729 - Orders Finding that the (1) Phys,1

    2010-05-04

    ... the Commodity Exchange Act (``CEA'' or the ``Act''), perform a significant price discovery function... on the Natural Gas Exchange, Inc., Do Not Perform a Significant Price Discovery Function \\1\\ The... 7a Index contracts do not perform a significant price discovery function. Authority for this action...

  20. Editorial: phys. stat. sol. (b) 241/5

    Stutzmann, Martin

    2004-04-01

    Physica status solidi was founded in 1961 by a number of eminent solid state physicists as an attempt to overcome the iron curtain, which then separated East and West, at least in the field of science. Since that time our world has changed quite a bit, and so have the boundary conditions of science publishing. However, one thing has not changed: then as now, the general policy and development of a respectable scientific journal should be determined by a board of independent scientists, who volunteer to assume responsibility for the scientific content of the journal, to assure a fair and critical peer review process for all submitted manuscripts, and, in cases of conflict, to finally decide which papers will be published and which will not.As a matter of fact, an international Board of Editors which consists of scientists coming from different countries and continents, with a good reputation in their respective community, and without any conflict of interest with the Publisher of the journal is, in my opinion, these days more important than ever. As our daily scientific work becomes increasingly specialized, but at the same time also increasingly interdisciplinary, we are more and more forced to trust the quality and reliability of published scientific results in the literature, without really having a chance to come to an independent opinion on our own. This is one of the reasons why the many recent cases of plagiarism, scientific misconduct, or outright fraud have caused such a high level of public awareness. It is quite clear that without a serious peer review there would be an even larger number of such cases in the literature, and that without the responsible action taken by concerned Journal Editors, many of the revealed cases probably would have remained under the carpet.It is, therefore, a particular pleasure for me to introduce to you on the following pages the current Editorial Board of physica status solidi (b) in the form of a brief curriculum vitae, a photograph, and an e-mail address (in case you want to contact our Editors directly!). Of course, since 1961 the Editorial Board of our journal has undergone many changes and will continue to do so, but we always have attempted to maintain a good balance between the different areas of solid state physics, between theory and experiment, and between different countries. And although nothing is perfect, I hope that you will find at least one or two board members, who are known to you through their contributions to the literature in solid state physics.For me, this is the perfect occasion to thank all Members of the Editorial Board, past and present, for their advice, continuing support, and dedication! Vielen herzlichen Dank!

  1. Editorial: phys. stat. sol. (a) 201/5

    Stutzmann, Martin

    2004-04-01

    Physica status solidi was founded in 1961 by a number of eminent solid state physicists as an attempt to overcome the iron curtain, which then separated East and West, at least in the field of science. Since that time our world has changed quite a bit, and so have the boundary conditions of science publishing. However, one thing has not changed: then as now, the general policy and development of a respectable scientific journal should be determined by a board of independent scientists, who volunteer to assume responsibility for the scientific content of the journal, to assure a fair and critical peer review process for all submitted manuscripts, and, in cases of conflict, to finally decide which papers will be published and which will not.As a matter of fact, an international Board of Editors which consists of scientists coming from different countries and continents, with a good reputation in their respective community, and without any conflict of interest with the Publisher of the journal is, in my opinion, these days more important than ever. As our daily scientific work becomes increasingly specialized, but at the same time also increasingly interdisciplinary, we are more and more forced to trust the quality and reliability of published scientific results in the literature, without really having a chance to come to an independent opinion on our own. This is one of the reasons why the many recent cases of plagiarism, scientific misconduct, or outright fraud have caused such a high level of public awareness. It is quite clear that without a serious peer review there would be an even larger number of such cases in the literature, and that without the responsible action taken by concerned Journal Editors, many of the revealed cases probably would have remained under the carpet.It is, therefore, a particular pleasure for me to introduce to you on the following pages the current Editorial Board of physica status solidi (a) in the form of a brief curriculum vitae, a photograph, and an e-mail address (in case you want to contact our Editors directly!). Of course, since 1961 the Editorial Board of our journal has undergone many changes and will continue to do so, but we always have attempted to maintain a good balance between the different areas of solid state physics, between theory and experiment, and between different countries. And although nothing is perfect, I hope that you will find at least one or two board members, who are known to you through their contributions to the literature in solid state physics.For me, this is the perfect occasion to thank all Members of the Editorial Board, past and present, for their advice, continuing support, and dedication! Vielen herzlichen Dank!

  2. Preface: phys. stat. sol. (a) 203/4

    Kittler, Martin; Yang, Deren

    2006-03-01

    This issue of physica status solidi (a) contains the majority of papers presented at the 2nd Sino-German Symposium The Silicon Age which was held at the Lindner Hotel Cottbus, Germany, 19-24 September 2005. This meeting followed the 1st Symposium Progress in Silicon Materials held in June 2002 in Hangzhou, P.R. China. 8 Chinese and 14 German scientists from universities, research institutes and industry were invited to present their views about different aspects of silicon.There was a continuous progress in silicon materials development during the last 40-50 years, driven by the need of the IC industry for better and larger monocrystalline silicon wafers. Moreover, low-cost crystalline silicon now dominates the world's production of solar cells in the photovoltaics industry. Furthermore, there are intensive research activities worldwide for on-chip integration of Si-based photonics in CMOS technology. In addition, new areas being connected with silicon are starting to appear, namely Si-based biochips and nanoelectronics. Silicon, one can reasonably argue, is already the most investigated of all materials. However, there is still a need for continuation of research and development regarding numerous aspects of Si and also SiGe, including related technologies, advanced diagnostics or the role of crystal defects, which are the working fields of many laboratories all over the world. This was also shown by the presentations at the symposium and can be found in the contributions contained in this issue.The organizers would like to thank the participants for their high level contributions and discussions during the symposium. This intensive and open communication allowed the participants to create synergies between the different fields of silicon research and also to build up relationships for cooperation between Chinese and German research groups.Finally, we would like to thank the Sino-German Science Center for the financial support of the symposium.

  3. L'épistémologie et l'histoire des sciences et des techniques peuvent elles aider les futurs enseignants de sciences physiques dans l'exercice de leur métier ? Regards portés pour une ingénierie de formation

    Guedj Muriel

    2014-01-01

    Full Text Available Cette étude interroge la place de l'Epistémologie, l'Histoire des Sciences et des Techniques comme élément pertinent pour améliorer la professionnalité des enseignants de sciences physiques. La réflexion se nourrit des nouvelles orientations prises au sein d'écoles d'ingénieurs et de facultés de médecine qui ont fait le choix d'introduire des unités d'enseignement dédiées aux Sciences Humaines et Sociales afin de perfectionner la qualité professionnelle de leurs formations. Une étude de cas dédiée à l'enseignement de l'énergie illustre le propos.

  4. Complete sequence of a cryptic virus from hemp (Cannabis sativa)

    Ziegler, A.; Matoušek, Jaroslav; Steger, G.; Schubert, J.

    2012-01-01

    Roč. 157, č. 2 (2012), s. 383-385 ISSN 0304-8608 R&D Projects: GA ČR GCP501/10/J018 Institutional research plan: CEZ:AV0Z50510513 Keywords : Cannabis sativa * Partitivirus * cryptic virus Subject RIV: EE - Microbiology, Virology Impact factor: 2.030, year: 2012

  5. Nutraceutical potential of hemp (Cannabis sativa L.) seeds and sprouts.

    Frassinetti, Stefania; Moccia, Eleonora; Caltavuturo, Leonardo; Gabriele, Morena; Longo, Vincenzo; Bellani, Lorenza; Giorgi, Gianluca; Giorgetti, Lucia

    2018-10-01

    In this study the antioxidant effect of Cannabis sativa L. seeds and sprouts (3 and 5 days of germination) was evaluated. Total polyphenols, flavonoids and flavonols content, when expressed on dry weight basis, were highest in sprouts; ORAC and DPPH (in vitro assays), CAA-RBC (cellular antioxidant activity in red blood cells) and hemolysis test (ex vivo assays) evidenced a good antioxidant activity higher in sprouts than in seeds. Untargeted analysis by high resolution mass spectrometry in negative ion mode allowed the identification of main polyphenols (caffeoyltyramine, cannabisin A, B, C) in seeds and of ω-6 (linoleic acid) in sprouts. Antimutagenic effect of seeds and sprouts extracts evidenced a significant decrease of mutagenesis induced by hydrogen peroxide in Saccharomyces cerevisiae D7 strain. In conclusion our results show that C. sativa seeds and sprouts exert beneficial effects on yeast and human cells and should be further investigated as a potential functional food. Copyright © 2018. Published by Elsevier Ltd.

  6. Managing for the next big thing. Interview by Paul Hemp.

    Ruettgers, M

    2001-01-01

    In this HBR interview, CEO Michael Ruettgers speaks in detail about the managerial practices that have allowed EMC to anticipate and exploit disruptive technologies, market opportunities, and business models ahead of its competitors. He recounts how the company repeatedly ventured into untested markets, ultimately transforming itself from a struggling maker of minicomputer memory boards into a data storage powerhouse and one of the most successful companies of the past decade. The company has achieved sustained and nearly unrivaled revenue, profit, and shareprice growth through a number of means. Emphasizing timing and speed, Ruettgers says, is critical. That's meant staggering products rather than developing them sequentially and avoiding the excessive refinements that slow time to market. Indeed, a sense of urgency, Ruettgers explains, has been critical to EMC's success. Processes such as quarterly goal setting and monthly forecasting meetings help maintain a sense of urgency and allow managers to get early glimpses of changes in the market. So does an environment in which personal accountability is stressed and the corporate focus is single-minded. Perhaps most important, the company has procedures to glean insights from customers. Intensive forums involving EMC engineers and leading-edge customers, who typically push for unconventional solutions to their problems, often yield new product features. Similarly, a customer service system that includes real-time monitoring of product use enables EMC to understand customer needs firsthand.

  7. Development of hemp fibre reinforced polypropylene composite - Journal Article

    Hargitai, H

    2005-06-01

    Full Text Available strong decrease in three point bending properties was noticed after immersing the composite samples in the distilled water for 19 days, while the impact strength increased. Double carding of raw materials resulted into decreased anisotropy in composite...

  8. New fern records for Kilimanjaro | Hemp | Journal of East African ...

    Working on the flora and vegetation of Mt Kilimanjaro, Tanzania, 17 ferns in 10 families were found that had not yet been recorded for the floral region T2. The altitudinal range, localities and habitat description are given for Adiantum raddianum, Asplenium bugoiense, Blechnum ivohibense, Blotiella stipitata, Dryopteris ...

  9. Three new fern records for Kilimanjaro | Hemp | Journal of East ...

    Working on the flora and vegetation of Mt. Kilimanjaro, Tanzania, three ferns in three families were found that are not yet recorded for the floral region T2. The altitudinal range, localities and habitat description are given for Adiantum reniforme, Azolla africana and Trichomanes radicans. Journal of East African Natural History ...

  10. Canthariphilous insects in east Africa | Hemp | Journal of East ...

    Canthariphilous insects, representing three different orders, were attracted to cantharidin baits in the years 1989 to 1999 in Tanzania, Kenya and Uganda. Two Aulacoderus, seven Formicomus, two Mecynotarsus, 11 Notoxus, three Tomoderus and one Cyclodinus, Omonadus, Pseudoleptaleus, Sapintus, and Tenuicomus ...

  11. Les enjeux liés à l’intégration de l’approche BIM de modélisation des données du bâtiment à l’enseignement universitaire : cas d’une école d’ingénierie

    Conrad Boton

    2017-01-01

    Full Text Available Le succès grandissant de l’approche de modélisation des données du bâtiment (BIM change le paradigme de fonctionnement de l’industrie de la construction et les universités sont confrontées à des défis importants dans leurs efforts pour introduire l’approche BIM dans l’enseignement. Plusieurs travaux ont étudié la question, mais chaque étude en a abordé des aspects spécifiques. Ainsi, il n’existe pas de cadre global fournissant des lignes directrices pratiques et neutres. Le cadre proposé dans cet article établit sept grands défis : les compétences à acquérir, l’approche pédagogique, les méthodes d’évaluation, l’environnement technologique, les partenariats industriels, l’approche de mise en œuvre et le calendrier. L’étude du cas d’une université d’ingénierie canadienne est également proposée.

  12. Bioplaguicidas de origen vegetal en Costa Rica (ING)

    García, Jaime

    2016-01-01

    More than hundred plant species reported to have some kind of pesticide effect in Costa Rica are cited. The current situation of supply and demand of these products is presented, emphasizing the principal limitations for the development at commercial level, as well as the potential that the country possesses based on its extraordinary biodiversity. A listing of the institutions related to this matter is given. Finally, additional considerations are made about the toxicity of theses products a...

  13. Rüblikud, vedurid ja sild leidsid omaniku / Inge Põlma

    Põlma, Inge

    2009-01-01

    Rapla valla sünnipäeva tähistamiseks korraldatud vastuvõtul Rapla kultuurikeskuses jagati valla auhindu. Rapla valla kultuuriauhinna Valla Vedur pälvisid 35 aastat Kodila näiteringi juhtinud Juta Blande ja Tarmo Rahuoja, kes on üles ehitanud spordiklubi ATO

  14. Un plaidoyer pour Do[ing] The Right Thing

    Pecqueux, Anthony

    2016-01-01

    International audience; Spike Lee’s Do The Right Thing (1989) continues to raise questions and debates. In contrast with traditional analyses, this article studies the film as staging three unusual protagonists: music, heat and the neighborhood. This sensitive configuration allows for a different linkage between a form of ambiantal determinism and a certain expressivity granted to certain characters. It also leads to shedding light on the perfectionist thematic of the film.; Do The Right Thin...

  15. Ühisrakendusprojektide teostamisest Eestis : [energeetika vallas] / Inge Roos

    Roos, Inge

    2004-01-01

    Kyoto protokolliga sätestatud kasvuhoonegaaside heitkoguste vähendamise paindlikud mehhanismid soodustavad efektiivsete energiat säästvate uute tehnoloogiate toomist arenenud lääneriikidest üleminekumajandusega riikidesse

  16. Mis on õiglane kaubandus? / Riina Kuusik ; interv. Inge Pitsner

    Kuusik, Riina

    2006-01-01

    ETV saate "Tasakaal" tegijad külastasid Nicaraguat ja Costa Ricat, et vaadata, kuidas elavad ja töötavad "õiglase kaubanduse" süsteemi kuuluvad talunikud, õiglase kaubanduse (fairtrade) mõistest

  17. Forum-ing: Signature practice for public theological discourse

    2014-05-14

    May 14, 2014 ... response to the problems of poverty, homelessness, and the 'missing and murdered children' ... virtual poor: Reimaging a discourse of reconciliation and social cohesion in South Africa', .... The reality is that God is engaged.

  18. Endoparasites of donkeys in Dessie and its surround- ings ...

    Between 2014 to April 2015 a total of 504 donkeys brought to Dessie veteri- nary clinic .... Beyene (2005) (50%), but higher than the report of Teka Tegegn et al. .... Urquahart, G. Armour, M., Duncan, J.L., Dunn, A.M. and Jennings, F.W., 1996.

  19. Mill in Yin ing mine: developments and new technology application

    Chen Xiangbiao; Liu Zhicheng

    1999-01-01

    Introduces the developments and new technology application of mill in Yining Mine, concretely evaluates the characters and effects employed three kinds of technological process, and considers that there are many advantages and features in the process No.3. It's technology is integrity, practical and worth recommending

  20. Riho Pätsi koolimuusika fond tunnustab parimaid / Inge Raudsepp

    Raudsepp, Inge, 1951-

    2015-01-01

    Riho Pätsi Koolimuusika Fond on üks Tallinna Ülikooli fondidest. Tänavused laureaadid on muusikaõpetaja Kadi Härma, klaveripedagoog Liina Jarovaja, helilooja Juhan Trump ning muusikapedagoogika uurija Anu Sepp

  1. PUSH-ing Construction Communications & Going Viral for Safety

    Prevost, Dan; McCall, Bill

    2018-01-01

    Over the past 2 years, the Indiana Toll Road Concession Co. (ITRCC) and its contractors have delivered the 80/90 PUSH project, an ambitious rehabilitation of 70 miles of the Indiana Toll Road. The team developed an aggressive communications program to keep its customers and community stakeholders informed, partnering with the Indiana Motor Truck Association to take its Put the Phone Down campaign to social media. Join us for a discussion.

  2. Forum-ing: Signature practice for public theological discourse ...

    The forum meets every Monday morning, except when there is a national holiday. It has operated 30 consecutive years. The forum has a series of presentations, including the opening prayer, self-introductions of each person, a report of the executive director, special presentations from selected community groups, reports, ...

  3. "Seinte vahel" - klišeevaba film koolist / Inge Unt

    Unt, Inge, 1928-

    2009-01-01

    Prantsusmaa 2008. a. mängufilmist "Seinte vahel" ("Entre les murs"), mille stsenarist oma romaani alusel ning peaosa täitja on Francois Begaudeau, režissöör Laurent Cantet. Filmist, mille kaudu saab teada, kuidas toimib meie põhikooli vanemale astmele vastav prantsuse kool

  4. LIGHT-ing Up Prostate Cancer for Immunotherapy

    2017-10-01

    patients with evanescent carcinoma. According to their location, they are probably IL17-producing type 3 innate lymphoid cells , which have been...with a Hamamatsu camera after performing morphometric analysis. Morphometric Analysis of Lymphoid and B Cell Follicles Lymphoid follicles (LF) were...activation, and CD8 T  cell accumulation are evident in prostate tumor-associated tertiary lymphoid organs (TLO). The 5-µm thick paraffin sections

  5. ID’ing Innate and Innate-like Lymphoid Cells

    Verykokakis, Mihalis; Zook, Erin C.; Kee, Barbara L.

    2014-01-01

    Summary The immune system can be divided into innate and adaptive components that differ in their rate and mode of cellular activation, with innate immune cells being the first responders to invading pathogens. Recent advances in the identification and characterization of innate lymphoid cells have revealed reiterative developmental programs that result in cells with effector fates that parallel those of adaptive lymphoid cells and are tailored to effectively eliminate a broad spectrum of pathogenic challenges. However, activation of these cells can also be associated with pathologies such as autoimmune disease. One major distinction between innate and adaptive immune system cells is the constitutive expression of ID proteins in the former and inducible expression in the latter. ID proteins function as antagonists of the E protein transcription factors that play critical roles in lymphoid specification as well as B and T-lymphocyte development. In this review, we examine the transcriptional mechanisms controlling the development of innate lymphocytes, including natural killer cells and the recently identified innate lymphoid cells (ILC1, ILC2, and ILC3), and innate-like lymphocytes, including natural killer T cells, with an emphasis on the known requirements for the ID proteins. PMID:25123285

  6. ID'ing innate and innate-like lymphoid cells.

    Verykokakis, Mihalis; Zook, Erin C; Kee, Barbara L

    2014-09-01

    The immune system can be divided into innate and adaptive components that differ in their rate and mode of cellular activation, with innate immune cells being the first responders to invading pathogens. Recent advances in the identification and characterization of innate lymphoid cells have revealed reiterative developmental programs that result in cells with effector fates that parallel those of adaptive lymphoid cells and are tailored to effectively eliminate a broad spectrum of pathogenic challenges. However, activation of these cells can also be associated with pathologies such as autoimmune disease. One major distinction between innate and adaptive immune system cells is the constitutive expression of ID proteins in the former and inducible expression in the latter. ID proteins function as antagonists of the E protein transcription factors that play critical roles in lymphoid specification as well as B- and T-lymphocyte development. In this review, we examine the transcriptional mechanisms controlling the development of innate lymphocytes, including natural killer cells and the recently identified innate lymphoid cells (ILC1, ILC2, and ILC3), and innate-like lymphocytes, including natural killer T cells, with an emphasis on the known requirements for the ID proteins. © 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  7. Süüdistus Sifi firma vastu / Inge Rumessen

    Rumessen, Inge

    2000-01-01

    Endel Sifi firmat OÜ Rasmusson süüdistatakse omavolilistes ehitus- ja lammutustöödes Bekkeri sadamas. AS Balti Baas ja OÜ Rasmusson vahelise tüli kronoloogia. E. Siff ja Vene naftagigant Onako soovivad saada sadama omanikuks

  8. Puesta en valor de algunas construcciones del ing. Salamone

    Traversa, Luis P.; Di Maio, Ángel A; Longoni, René

    2003-01-01

    En Enero del año 2002, la Legislatura bonaerense sancionó la ley n° 12.854, que declaró Patrimonio provincial a la obra pública municipal del ingeniero Francisco Salamone (1898-1959), construída durante el Gobierno de Manuel Fresco (1936-1940). De casi un centenar de construcciones y proyectos realizados dentro de lo que se denominó Plan de Obras Públicas Municipales, en más de 20 localidades pertenecientes a 16 Partidos del interior bonaerense, al menos, una treintena de ellas son signifi...

  9. CT and MRI find- ings in Lhermitte- Duclos disease

    Kurt

    no gender bias. The clinical manifesta- ... Germany) of the brain was per- formed. ... in the right cerebellar hemisphere. ... right cerebellum with a large temporal horn of left later- al ventricle. ... autosomal-dominant condition with a prevalence of ...

  10. New concept of age(ing: Prospective age

    Devedžić Mirjana

    2012-01-01

    Full Text Available While the last century was the century of world population growth, according to demographers, the XXI century will be century of population aging. Statistics undoubtedly show that number of elderly will continue it’s growth in the future. If old age is seen as period of life with reduced physical and mental capabilities and increased disability, and demographic aging as increase of dependent population, trends are quite disturbing, at least in certain societal segments. In developed countries, this population category is no longer treated as passive or as a "burden of society" and efforts are made for better social inclusion of older people. In contrast to growing interest in this phenomenon, the concepts that define the aging of the population remained stagnant. The aim of this paper is to introduce into domestic literature the term "prospective age" as a dynamic category which is more affected with socio-historical conditions, not only with biological as traditional definition of aging suggested. Papers written by Sanderson and Scherbov offer new methodological options for study of population aging, because it takes into account the biometric rather than chronological approach. Calculation of prospective years is a simple operation that requires pair of the same number of remained life expectancy from life tables for two different periods (the year of concern is index, and the one we are comparing with is standard year, so that phrase "40s is the new 30s" or "70s the new 60s" gets scientific foundation. Average remaining years of life represent a realistic indicator suggesting increased capacity, activity and vitality of individuals, which is due to accepted demographic parameters still considered old. „Prospective threshold“ is defined as the age when life expectancy falls below 15 years (it is subjective choice made by Sanderson and Scherbov, which is also used in this paper and during the elaboration of these ideas three demographic indicators was constructed, redefined more precisely, based on prospective age: (prospective share of the elderly, (prospective median age and (prospective old age dependency ratio. With respect to the remaining years of life in the calculation of demographic aging, world’s population will be in rejuvenation process by 2035, longer and more intense than defined by proportion of the elderly. Prospective approach found that longer life expectancy in developing countries is not only a result of the decrease in infant and child mortality, but also the decrease of the old population mortality. Data used in this paper are from period life tables and censuses, for period 1953-2010. Prospective age threshold in Serbia was always higher than retrospective age (60,17 in 1953 .and 63,15 in 2010. for total population , or the proportion of people with a life expectancy less than 15 years has consistently been higher than the share of people older than 65 years (17.86% vs. 16.92% in 2010. According to prospective criteria, differences between men and women almost do not existent, so that it calls into question the widely accepted feminization of the elderly. The same conclusion stands when we discuss (prospective median age, population is older using prospective (47,15 years than traditional (41.41 indicator in 2010, also, compared with rest of the region or with more developed countries, prospective median age is higher in Serbia. Also, prospective old-age dependency ratio is higher than conventional one during analyzed period. Prospective concept and amendments are necessary in public policy, especially pension and health care system, because in combination with traditional approaches can create more justified distribution for older and younger generations.

  11. "Value"ing Children Differently? Migrant Children in Education

    Devine, Dympna

    2013-01-01

    This paper considers dilemmas around "value" and the "valuing" of children and childhood(s) in schools. I argue that in neo-liberal contexts, processes of children's identity making become aligned with the idea of the corporate citizen--value and worth derived from the capacity to produce, excel, self-regulate as well as…

  12. ING: INDOOR ROUTING PROTOCOL FOR GREEN HOME NETWORKS

    Kaouthar Sethom; Nozha Al- Ibrahimi; Guy Pujolle

    2011-01-01

    Because of all the innovations in computer communications and digital consumer device technologies,people have had great interest in researching home networking systems. The home is evolving rapidlyinto a smart Mesh networked environment.Moreover, the energy consumption of wireless devices and networks gradually increases to represent asignificant portion of the operational cost, naturally also causing increased equivalent carbonemissions to the environment. Therefore, reducing the energy con...

  13. Parading memory and re-member-ing conflict

    McQuaid, Sara Dybris

    ; Bar-Tal 1997; Cairns & Roe 2003; Mann 2005; Roudometof 2002; cf. Asmal et al. 1996). In this context, commemoration and memorialisation work to enhance and reinforce exclusive group solidarities (Abou Assi 2010; McDowel & Braniff forthcoming 2014). The study of peace processes thus demands specific...... these ways, they are vernaculars that can unsettle received or official narratives attempting to smooth over differences and anxieties in transitory times. The emotive use of collective memory to charge processes of identity formation often form part of protracted and sectarian conflict (Horowitz [1985] 2000...... understandings of the role of history and memory as conflict dynamics, as well as strategies for studying these as both critical events and as critical continuities. In Northern Ireland, parades provide a unique case for this approach as they draw on and reframe collective memories through partly ritualised...

  14. Parading memory and re-member-ing conflict

    McQuaid, Sara Dybris

    2017-01-01

    In Northern Ireland, parades have long been important carriers of politico-cultural identities and collective memories, as well as arenas of struggle and conflict. Taking as its starting point that these contests over meaning are always framed by their contexts of articulation both in temporal...... and spatial terms, this article examines the role of parades in the current ‘post-conflict’ phase of the peace process as it plays out in a particular location, namely North Belfast. Using theories of cultural and collective memory and examples from republican and loyalist parades in North Belfast......, it is argued that there is fear of memory and identity collapse in particular communities on the margins of the peace process, leading to a conscious doubling of efforts to (re)articulate the hidden recesses of memory in the current transition. In this, the patterns of ‘competitive commemoration’ in parades...

  15. Kaali saladus Eesti-Läti filmis / Inge Pitsner

    Pitsner, Inge

    2003-01-01

    Valminud on populaarteaduslik film Kaali meteoriidiplahvatusest "Kaali saladus" : stsenarist ja režissöör Urmas E. Liiv : operaator Ago Ruus : produtsent Riho Västrik : OÜ Vesilind (Eesti) - Vides Filmu Studija (Läti)

  16. Modelos, lenguajes y abstracción (ING

    José Aurelio Sánchez

    2016-03-01

    Full Text Available Every construction process (whatever buildings, machines, software, etc. requires first to make a model of the artifact that is going to be built. This model should be based on a paradigm or meta-model, which defines the basic modeling elements: which real world concepts can be represented, which relationships can be established among them, and son on. There also should be a language to represent, manipulate and think about that model. Usually this model should be redefined at various levels of abstraction. So both, the paradigm an the language, must have abstraction capacity. In this paper I characterize the relationships that exist between these concepts: model, language and abstraction. I also analyze some historical models, like the relational model for databases, the imperative programming model and the object oriented model. Finally, I remark the need to teach that model-driven approach to students, and even go further to higher level models, like component models o business models.

  17. Watch-ing out for chick limb development.

    Pascoal, Susana; Palmeirim, Isabel

    2007-09-01

    Time control is a crucial issue during embryonic development. Nevertheless, little is known about how embryonic cells measure time. Until recently, the only molecular clock known to operate during vertebrate embryonic development was the somitogenesis clock, exclusively functioning in coordinating the precise timing of each new pair of somites formed from the presomitic mesoderm. We have recently evidenced that a similar molecular clock also underlies the timing at which autopod chondrogenic precursors are laid down to form a skeletal limb element. In addition, we herein suggest that the molecular clock is not the only parallelism that can be established between somitogenesis and limb-bud development. In an evolutionary perspective, we support the previously proposed idea that the molecular mechanisms involved in the segmentation of the body axis may have been partially reused in the mesoderm of the lateral plate, thereby allowing the emergence of paired appendages.

  18. Täiskuu tervitas luulefestivali / Inge Põlma, Maire Kõrver

    Põlma, Inge

    2008-01-01

    Ülevaade Täiskuu luulefestivalist, kus esinesid Kristiina Ehin, Andres Ehin, Ly Ehin, Contra, Sujata Bhatt, Ban'ya Natsuishi, Meelika Hainsoo, Lise Sinclair, Jaak Johanson, Lauri Õunapuu, Maria Peterson, Siiri Sisask, Kauksi Ülle, Sayumi Kamakura

  19. Medicine Wheel Imag(in)ings: Exploring Holistic Curriculum Perspectives

    Kind, Sylvia; Irwin, Rita L.; Grauer, Kit; de Cosson, Alex

    2005-01-01

    Education is longing for a deeper more connected, more inclusive, and more aware way of knowing. One that connects heart and hand and head and does not split knowledge into dualities of thought and being, mind and body, emotion and intellect, but resonates with a wholeness and fullness that engages every part of one's being. Engagement with the…

  20. postoperative nausea and vomiting in korle bu teach- ing hospital

    DOfori-Adjei

    2007-12-01

    Dec 1, 2007 ... SUMMARY. Objective: Postoperative nausea and vomiting (PONV) is one of the most distressing morbidities associated with surgery. Even though the incidence can be as high as 30% elsewhere no work has been done to assess the incidence in any health facility in Ghana. This study was carried out to ...

  1. Torm Balti merel / Märt Treier ; interv. Inge Pitsner

    Treier, Märt, 1975-

    2004-01-01

    TV3 näitab saksa poliitilist põnevusfilmi "Balti torm" ("Baltic Storm"), mis kujutab parvlaev "Estonia" hukku : stsenarist, produtsent Jutta Rabe : režissöör Reuben Leder. Filmi eel on teles Märt Treieri saade "Tormist sündinud tormid"

  2. Streptococcus In man m illeri causIng infection

    1983-04-30

    Apr 30, 1983 ... every organ system. Bacteraemia due to Strept. mil- leri was a significant indicator of the presence of an occult abscess. Endocarditis was rare. The penicillins or ... liver, central nervous system, lungs, appendix, pleural cavity and pelvis, as well as from ... or predisposing factors and therapy. Results.

  3. Control of aquatic leeches (Lymnatis nilotica) us- ing Phytolacca ...

    also caused mortality of tadpoles, frogs and round worms found in streams while it doesn't cause any visible toxicity to .... immature age died of leech infestation. About 50 calves that were watered at .... vary depending on the type of water medium (Getachew Tilahun et al., 2002) and in cases where higher doses are ...

  4. Suurim tunnustus = Decorations worthy of the President / Inge Pitsner

    Pitsner, Inge

    2008-01-01

    Riigikantselei sümboolikanõunik Gert Uiboaed tutvustab presidendi poolt annetatavaid riiklikke teenetemärke. Vt. samas: Huvitava saatusega kett. Eesti Vabariigi Presidendi ametitunnusest - Riigivapi ketiklassi teenetemärgist; Teenetemärgid valmivad Eestis; Mees märkide keskelt = Man among medals. Falerist Aleks Kivinuki märgikogus on väga haruldasi Eesti teenetemärke

  5. modelling and simulation of the batch hydrolysis of acetic ing

    eobe

    The kinetic modelling of the batch synthesis of acetic acid from acetic. The kinetic modelling of ... integral method of analysis to determine the kinetic parameters .... Equation (5) is applied to all the components ... In common chemical engineering terminology, the degree of ..... of Physical Organic Chemistry, Vol. 25, Number ...

  6. Forum-ing: Signature practice for public theological discourse ...

    HTS Teologiese Studies / Theological Studies. Journal Home · ABOUT THIS JOURNAL · Advanced Search · Current Issue · Archives · Journal Home > Vol 70, No 1 (2014) >. Log in or Register to get access to full text downloads.

  7. CreatIng Web-based Math learnIng tool for TURKISH mIddle school students: Webquest

    Aytac KURTULUS

    2009-04-01

    Full Text Available Internet is the most important product for the computer technology and it began to be used in many fields. Especially in the recent years, the usage of Internet has increased in the fields of communication, entertainment, advertisement, media, and technology. In Turkey, the usage of Internet is not used very common and active in primary and secondary education. The fast developments of the new technologies and the Web-Based Education Systems must be increased the importance of giving courses. In this study, the information to be aimed at is to introduce the WebQuest system, which was developed at San Diego State University by Bernie Dodge. A webQuest can be used web-based math learning tool for Turkish middle school students. Therefore, an example of geometry education WebQuest is given to introduce WebQuest system because WebQuest will be active in geometry teaching similar to the other subjects. An overview of WebQuest technology application and several resources for teachers and students interested in creating WebQuests can be found on The WebQutest Page (Dodge, 2001. Table 1 lists web sites that have many of these resources.

  8. Comment on "An explanation for the charge on water's surface" by A. Gray-Weale and J. K. Beattie, Phys. Chem. Chem. Phys., 2009, 11, 10994

    Vácha, Robert; Horinek, D.; Buchner, R.; Winter, B.; Jungwirth, Pavel

    2010-01-01

    Roč. 12, č. 42 (2010), s. 14362-14363 ISSN 1463-9076 Institutional research plan: CEZ:AV0Z40550506 Keywords : surface charge * water * dielectric decrement Subject RIV: CF - Physical ; Theoretical Chemistry Impact factor: 3.454, year: 2010

  9. C Chemic cal and s d phys seed oi sicoch il from emica m 'Gefn l ...

    SAM

    west longitude, at 500 m altitude. The average annual ... were separated and washed with distilled water, weighed and dried ... prevent uncontrollable oxidative changes, according to the ... placed in a boiling bath for 5 min, where 2.5 mL of esterifying ... linear ramp of 5°C/min until reaching 240°C; this temperature was.

  10. Review of the International Journal of Radiation Oncology, Biology and Phys. (1985-1986)

    Pereslegin, I.A.; Zolotkov, A.G.; Vinogradov, V.A.; Mikelova, L.V.

    1988-01-01

    Review of publications on clinical investigations of malignant tumor radio- and complex therapy is given. Great attention is paid to malignant lymphomas therapy. Study of organopreserving operation effects at the early stage of mammary gland carcinoma is being continyed. Investigations, dedicated to improve techniques and results of prostatic glands carcinoma radiotherapy and pulmonary carcinoma chemoradiotherapy, are widely presented. Different methods of neoplasms therapy are discussed

  11. The New Phys Ed.: Dodgeball Is Passe; Schools Are Teaching Lifelong Fitness

    Schachter, Ron

    2011-01-01

    A growing number of physical education teachers are introducing a new kind of P.E. in schools, emphasizing lifelong activities such as running, cycling, yoga, and skateboarding, in an attempt to make exercise more engaging--and lifelong--for elementary and middle school students. The new generation of P.E. classes is introducing youngsters to…

  12. Erratum: Renormalization of NN scattering: Contact potential [Phys. Rev. C 71, 034001 (2005)

    Yang Jifeng; Huang Jianhua

    2005-01-01

    In Eqs. (43) and (44), the factor (1+α 0 J 3 ) -(1/2) should be replaced by (1+α 2 J 3 ) -(1/2) . Similarly, in Eqs. (46) and (47), the factor (1+q 3 α 0 Mμ 3 ) -(1/2) should be replaced by (1+q 3 α 2 Mμ 3 ) -(1/2) . The results and conclusions of the article are not affected

  13. Colloquium held in honour of Prof.em.Dr.-Ing. F. Adler and Prof.Dr.-Ing. Dr.h.c. F.L. Wilke

    1992-01-01

    The following subjects are discussed: Acceptance of social responsibility; introduction of a management information system B-FIS at Friedrich Heinrich mine; new engineering tasks in reinsurance; mining education and the mining industry; exodus of German mining engineers; developments in shaft drilling in the last 20 years. (HS) [de

  14. High Altitude Electromagnetic Pulse (HEMP) and High Power Microwave (HPM) Devices: Threat Assessments

    Wilson, Clay

    2004-01-01

    .... civilian computer systems to the effects of EMP has been discussed in the media. EMP can be produced on a large scale using a single nuclear explosion, and on a smaller, non-nuclear scale using a device with batteries or chemical explosives...

  15. The Effects of High-Altitude Electromagnetic Pulse (HEMP) on Telecommunications Assets

    1988-06-01

    common to a whole class of switches. 5ESS switch software controls the operating system, call processing, and system administration andgmaintenance...LEVEL (ky/rn)3 (a). Mean Fraction of Preset Calls Dropped Due to Induced Transients3 1.0 W -o35kVhM (36 EVENTS) 5-40 kV/M (13 EVENTS) IAUTOMATIC ...eel PERIPHRAL UNIT BUS,IMNA The entire 4ESS system is controlled by the 1A processor. The processor monitors and controls the operation of the

  16. A time for growth: an interview with Amgen CEO Kevin Sharer. Interview by Paul Hemp.

    Sharer, Kevin

    2004-01-01

    Fast growth is a nice problem to have--but a hard one to manage well. In this interview, Kevin Sharer, the CEO of biotech giant Amgen, talks about the special challenges leaders face when their companies are on a roll. Sharer, who was also head of marketing at pre-WorldCom MCI and a division head and a staff assistant to Jack Welch at GE, offers insights drawn from his own experience--and from his own self-proclaimed blunders: "I learned the hard way that you need to become credible and enlist support inside the company before you start trying to be a change agent. If you think you're going to make change happen simply by force of personality or position or intellect, you'd better think again." And change there was: Under Sharer's leadership, Amgen overhauled its management team, altered its culture, and launched a couple of blockbuster products. How do chief executives survive in that kind of dizzying environment? "A CEO must always be switching between different altitudes--tasks of different levels of abstraction and specificity," Sharer says. "You might need to spend time working on a redesign of your organizational structure and then quickly switch to drafting a memo to all employees aimed at reinforcing one of the company's values." Having a supportive and capable top team is also key: "A top management team is the most revealing window into a CEO's style, values, and aspirations.... If you don't have the right top team, you won't have the right tiers below them. [The] A players won't work for B players. Maybe with a company like GE, the reputation of the company is so strong that it can attract top people to work for weaker managers. In a new company like Amgen, that won't happen."

  17. High Altitude Electromagnetic Pulse (HEMP) and High Power Microwave (HPM) Devices: Threat Assessments

    Wilson, Clay

    2006-01-01

    .... This method is called High Power Microwave (HPM). Several nations, including sponsors of terrorism, may currently have a capability to use EMP as a weapon for cyberterrorism to disrupt communications and other parts of the U.S...

  18. Recommended E3 HEMP Heave Electric Field Waveform for the Critical Infrastructures. Volume 2

    2017-07-31

    horizontal electric (E) field, as this field can effectively couple to long power and communications lines and induce quasi-dc currents in these systems ...Department of Defense E electric field EMP electromagnetic pulse EPRI Electric Power Research Institute FERC Federal Energy Regulatory Commission GMD...North American Electric Reliability Corporation nT nanotesla S/m siemens/m UV ultraviolet V Volt ix PREFACE This EMP Commission Report

  19. High Altitude Electromagnetic Pulse (HEMP) and High Power Microwave (HPM) Devices: Threat Assessments

    Wilson, Clay

    2008-01-01

    ... for cyber warfare or cyber terrorism to disrupt communications and other parts of the U.S. critical infrastructure. Also, some equipment and weapons used by the U.S. military may be vulnerable to the effects of EMP.

  20. High Altitude Electromagnetic Pulse (HEMP) and High Power Microwave (HPM) Devices: Threat Assessments

    Wilson, Clay

    2005-01-01

    .... This method is called High Power Microwave (HPM). Several nations, including reported sponsors of terrorism, may currently have a capability to use EMP as a weapon to disrupt communications and other parts of the U.S...

  1. Anti-inflammatory effect of methanol extracts of hemp leaf in IL-1β ...

    cannabinoids, especially cannabidiol (CBD) and tetrahydrocannabinol (THC). ... Tropical Journal of Pharmaceutical Research is indexed by Science Citation Index (SciSearch), ..... Bergamaschi MM, Queiroz RHC, Crippa JAS, Zuardi AW.

  2. Studying Secondary Growth and Bast Fiber Development: The Hemp Hypocotyl Peeks behind the Wall

    Behr, M.; Legay, S.; Žižková, Eva; Motyka, Václav; Dobrev, Petre; Hausman, J.F.; Lutts, S.; Guerriero, G.

    2016-01-01

    Roč. 7, NOV 18 (2016), č. článku 1733. ISSN 1664-462X R&D Projects: GA ČR(CZ) GA16-14649S Institutional support: RVO:61389030 Keywords : plant-cell-wall * arabidopsis-thaliana * cannabis-sativa * lignin biosynthesis * microarray analysis * gene-expression * in-silico * anthocyanin biosynthesis * arabinogalactan-protein * transcription factors * Cannabis sativa * hypocotyl * bast fibers * cell wall * RNA-Seq * immunohistochemistry * phytohormones Subject RIV: EF - Botanics Impact factor: 4.298, year: 2016

  3. High Altitude Electromagnetic Pulse (HEMP) and High Power Microwave (HPM) Devices: Threat Assessments

    Wilson, Clay

    2006-01-01

    Electromagnetic Pulse (EMP) is an instantaneous, intense energy field that can disrupt at a distance numerous electrical systems and high technology microcircuits that are especially sensitive to power surges...

  4. High Altitude Electromagnetic Pulse (HEMP) and High Power Microwave (HPM) Devices: Threat Assessments

    Wilson, Clay

    2008-01-01

    Electromagnetic Pulse (EMP) is an instantaneous, intense energy field that can overload or disrupt at a distance numerous electrical systems and high technology microcircuits, which are especially sensitive to power surges...

  5. Sunn hemp as a ground cover to manage fall armyworm populations

    Fall armyworm (FAW), Spodoptera frugiperda, is a serious pest of sweet corn in south Florida and a pest of other vegetable, row, and forage crops in the southeastern, mid-Atlantic, and central U.S. It is a migratory pest, moving north each season from overwintering areas in southern Texas and south...

  6. UNIFORM FARM OPERATIONS (UFO ON HEMP BROOM RAPE SEED GERMINATION BY BIOLOGICAL CONTROL MANAGEMENT IN IRAN

    Behzad SANI

    2014-06-01

    Full Text Available Weeds are a constant problem in agronomy and they not only compete with crops for water, nutrients, sunlight, andspace but also harbor insect and disease pests; clog irrigation and drainage systems; undermine crop quality; anddeposit weed seeds into crop harvests. In order to the microbial herbicide (Orocide influence on seed germinationin Orobancheramosa L., this experiment was conducted in 2011 at Islamic Azad University Shahr-e-Qods Branch inTehran by a completely randomized design with four replications. The factor studied included use of Orocide(0(T1, 2(T2, 4(T3 and 6(T4 percentage. The results showed that the effect of microbial herbicide (Orocide wassignificant on germination percentage of Orobancheramosa. Mean comparison showed that the highest germinationpercentage (79% was achieved by non-application of Orocide and lowest germination percentage (8% wasachieved by application of 4% Orocide.The results of this experiment showed that the use of Orocide can decreasedthe germination in Orobancheramosa L. that is uniform farm operations (UFO very important for weed biologicalcontrol management at Iran.

  7. Fungal treatment of hemp-based pulp and paper mill wastes | Taseli ...

    based pulp and paper plant bleachery effluents in batch and up-flow column reactor studies. In batch tests, the highest removals for acid-line effluents (67% AOX (adsorbable organic halogens), 44% TOC 8 total organic carbon), 97% color) were ...

  8. A Jester's Guide to Creative See[k]ing across Disciplines

    Rosen, Diane

    2012-01-01

    For many centuries and in many cultures, jesters recited tales of heroic exploits, but they did more than simply recount past events--they amused, cajoled, and spun tales that transported listeners to the edge of mysterious, unmapped territories. Through the transformative power of play and the imagination, they reworked what was already…

  9. ingénierie des processus opérationnels et organisations

    Éric Alsène

    2009-03-01

    Full Text Available Ces dernières années, nombreuses sont les entreprises qui ont innové en révisant de fond en comble certains de leurs processus opérationnels, à la fois pour les moderniser et pour éliminer les activités qui ne produisaient pas de valeur. On sait toutefois aujourd’hui que ces innovations ne portent véritablement fruit que si, entre autres, les entreprises révisent en parallèle leur structure organisationnelle et leur organisation du travail. Michael Hammer a émis en 1996 quelques idées relativement radicales à ce sujet (prise en charge des processus par des équipes de processus, composées d’employés polyvalents et responsabilisés ; instauration d’un conseil des processus pour coordonner et intégrer les divers processus et les diverses équipes qui les prennent en charge, etc.. Notre texte présente une étude de cas, dans laquelle nous avons cherché à savoir si ces idées de Michael Hammer étaient reprises par les acteurs de terrain, ou bien si celles-ci demeuraient des références plutôt théoriques et utopiques.These last years, many firms have innovated by revising their operational processes, to modernize them and eliminate the activities that produced no value. However, we now know that this needs to be accompanied by a revision of work organization and structures of the firm. In 1996, Michael Hammer developed some radical ideas on this (takeover by process teams, with polyvalent employees; creation of a process counsel to coordinate and integrate the various processes and teams, etc.. Our paper is a case study, in which we tried to verify if these ideas were used by the actors within firms or if they remained only utopic and theoretical ideas.

  10. Obtención de lignina y celulosa de residuos de maíz (ING

    Manuel Moya P

    2016-03-01

    Full Text Available Using a simple pulping method, lignin and cellulose were obtained from corn waste in good yield. Thermal analysis results showed that lignins were thermally less stable than Kraft Lignin from soft woods. Using several different methods, it was found that the celluloses were less cristallin than Avicel cellulose.

  11. Obtención de lignina y celulosa de residuos de maíz (ING)

    Manuel Moya P; Marlen Durán Ch.; María Sibaja B.

    2016-01-01

    Using a simple pulping method, lignin and cellulose were obtained from corn waste in good yield. Thermal analysis results showed that lignins were thermally less stable than Kraft Lignin from soft woods. Using several different methods, it was found that the celluloses were less cristallin than Avicel cellulose.

  12. Trans*+ing Classrooms: The Pedagogy of Refusal as Mediator for Learning

    sj Miller

    2016-07-01

    Full Text Available Gender and sexuality norms, conscribed under cis/heteropatriarchy, have established violent and unstable social and educational climates for the millennial generation of lesbian, gay, bisexual, transgender, intersex, agender/asexual, gender creative, and questioning youth. While strides have been made to make schools more supportive and queer inclusive, schools still struggle to include lesbian, gay, bisexual, transgender*+, intersex, agender/asexual, gender creative, queer and questioning (LGBT*+IAGCQQ-positive curricula. While extensive studies must be done on behalf of all queer youth, this work specifically focuses on how to support classroom teachers to uptake and apply a pedagogy of refusal that attends to the most vulnerabilized population of queer youth to date, those that are trans*+. A pedagogy of refusal will be explored through an evolving theory of trans*+ness, then demonstrated through a framework for classroom application, followed by recommendations for change.

  13. The Things of Caesar: Mark-ing the Plural (Mk 12:13–17

    Warren Carter

    2014-09-01

    Full Text Available This article observes the rarely-discussed phenomenon that the Marcan paying-the-tax scene refers to tax in the singular, whilst the concluding saying uses the plural ‘the things of Caesar and of God’. The article accounts for this phenomenon by means of developing traditions. The section under the heading ‘Mark’s scene and saying about taxes (12:13–17’ counters the common claim that scene and saying originated as a unit from the historical Jesus. It proposes that whilst the saying may have originated with Jesus, the scene as we have it did not. The section under the heading ‘Social memory, orality, and a multi-referential saying?’ suggests some contexts that the saying about the things of Caesar addressed pre-Mark. And under the section ‘Trauma and Mark’s scene’ it is argued that Mark created a unit comprising scene and saying to negotiate the ‘ trauma’ of the 66–70 war. The unit evaluates freshly-asserted Roman power as idolatrous and blasphemous whilst simultaneously authorising the continued involvement of Jesus-believers in imperial society.

  14. Restor(y)ing Hope: Stories as Social Movement Learning in Ada Songor Salt Movement

    Langdon, Jonathan; Garbary, Rachel

    2017-01-01

    Stories are a central component of how we understand ourselves and our societies in our world. This is especially true in the case of oral cultures. Stories, how they are used, how they are reframed, and how they change over time, are also an important record of learning. Randall (1996) and Kenyon and Randall (1997) have called this process…

  15. Estudio preliminar de tres modelos de destiladores solares para producir sal y agua potable (ING

    Shyam S. Nandwani

    2016-03-01

    Full Text Available We have constructed three solar stills of areas 0.5-1.0 m2 to produce salt and potable water, using local technology and local materials. We have studied the thermal efficiency of these stills as a function of solar intensity, covers, geometrical configuration, quantity of water, salt concentration and artificial cooling of the cover. Some of the important results are: still with glass cover destill more water than still with plastic cover, thermal efficiency vary between 10-30%, amount of water which can be evaporated and condense is 2-4 l/day/m2, exist 25-60% of loss of water in the still and finally artificial cooling of the cover can be accelerate the process of condensation, etc. Finally we have mentioned the chemical analysis of destilled and normal tap water.

  16. 78 FR 18634 - ING Life Insurance and Annuity Company, et al; Notice of Application

    2013-03-27

    ... invests exclusively in shares of the Existing Fund or another open-end management investment company. The.... Overall management services to the Replacement Fund are provided by Directed Services, LLC, a registered... as a criterion for investment. A comparison of the investing strategies and risks of the Existing...

  17. Küüditatuid mälestati kontserdiga Kohilas ja Raplas / Inge Põlma

    Põlma, Inge

    2009-01-01

    1941. aastal küüditatute mälestuseks toimunud kontsertidest "Me ei näinud teda enam kunagi" 14. juunil Raplas Maarja-Magdaleena kirikus ja Kohilas EAÕ Angerja Issanda kirikus, esines ansambel Tallinn Baroque

  18. Crack-ing the case: a patient with persistent delirium due to body packing with cocaine.

    2012-04-01

    A 36-year-old male presented acutely with encephalopathy, following his return to Ireland from a visit to West Africa. Clinical findings included confusion, agitation and tonic-clonic seizures. Difficulties in weaning sedation prompted repeat urine toxicology screening at day 8, which was positive for cocaine. Work-up for a source of continued cocaine exposure led to the discovery of cocaine-containing packages in the gastrointestinal tract. An index of suspicion should be maintained in patients presenting with drug toxicity following cross-border travel.

  19. Una olimpiada matemática para el segundo ciclo (OMCEP (ING

    Víctor Buján

    2016-03-01

    Full Text Available We describe the origin, development and objectives of the Mathematical Olympiads “OMCEP”, an annual contest for Grades 4, 5 and 6 that took place for the first time in 1993. Lists of medal winners for the last three years of OMCEP, and some problems, with the percentages of correct answers given by participating children, are shown.

  20. Race-ing Class Ladies: Lineages of Privilege in an Elite South African School

    Epstein, Debbie

    2014-01-01

    This paper draws on fieldwork done in Greystone School in South Africa, a single sex girls' school. I explore how the legacy of coloniser and colonised is reconfigured through the history of the school and the particular racialised politics of South Africa, where race and class have always been imbricated in differently nuanced ways before, during…