AlCl₃·6H₂O-Catalyzed Friedel-Crafts Alkylation of Indoles by the para-Quinone Methide Moiety of Celastrol.

Science.gov (United States)

Zhu, Yi; Chen, Ziwen; Huang, Zhenfei; Yan, Siwei; Li, Zhuoer; Zhou, Hu; Zhang, Xiaokun; Su, Ying; Zeng, Zhiping

2017-05-16

A classical Friedel-Crafts alkylation of different indoles catalyzed by AlCl₃·6H₂O has been developed for a well-known important natural product, celastrol, resulting in a series of derivatives for further biological evaluation. The catalyst loading was reduced to 5 mol %, the reaction proceeds at ambient temperature and reaction time is only 3 h. The product yields range from 20% to 99%. A reaction mechanism is also proposed, based on our experiment results.

Friedel-Crafts Crosslinked Highly Sulfonated Polyether Ether Ketone (SPEEK) Membranes for a Vanadium/Air Redox Flow Battery.

Science.gov (United States)

Merle, Géraldine; Ioana, Filipoi Carmen; Demco, Dan Eugen; Saakes, Michel; Hosseiny, Seyed Schwan

2013-12-30

Highly conductive and low vanadium permeable crosslinked sulfonated poly(ether ether ketone) (cSPEEK) membranes were prepared by electrophilic aromatic substitution for a Vanadium/Air Redox Flow Battery (Vanadium/Air-RFB) application. Membranes were synthesized from ethanol solution and crosslinked under different temperatures with 1,4-benzenedimethanol and ZnCl2 via the Friedel-Crafts crosslinking route. The crosslinking mechanism under different temperatures indicated two crosslinking pathways: (a) crosslinking on the sulfonic acid groups; and (b) crosslinking on the backbone. It was observed that membranes crosslinked at a temperature of 150 °C lead to low proton conductive membranes, whereas an increase in crosslinking temperature and time would lead to high proton conductive membranes. High temperature crosslinking also resulted in an increase in anisotropy and water diffusion. Furthermore, the membranes were investigated for a Vanadium/Air Redox Flow Battery application. Membranes crosslinked at 200 °C for 30 min with a molar ratio between 2:1 (mol repeat unit:mol benzenedimethanol) showed a proton conductivity of 27.9 mS/cm and a 100 times lower VO2+ crossover compared to Nafion.

Modification of an Amposta origin bitumen by using tlie Friedel and Crafts reaction with toluyiene-2,4-diisocyanate

Directory of Open Access Journals (Sweden)

Blanco, M.

1988-03-01

Full Text Available In this works, we have modified a bitumen from Amposta by using the Friedel and Crafts reaction with toluylene-2,4-diisocyanate in presence of aluminium trichloride, presenting as well as the characteristics of the original bitumen as the ones of the modification products. We have made technological test, aging of thin film, rheological test, thermical susceptibility and components analyses.

En el presente trabajo se ha modificado un betún procedente de Amposta por reacción de Friedei y Crafts con 4-metil-1,3-bencenodiisocianato, en presencia de tricloruro de aluminio. Se han determinado las características del betún original así como las de los productos obtenidos en la modificación. Se han llevado a cabo ensayos de tipo tecnológico, envejecimiento en película delgada, propiedades reológicas, susceptibilidad térmica y análisis de componentes.

A Large Scale Formal Synthesis of CoQ10: Highly Stereoselective Friedel-Crafts Allylation Reaction of Tetramethoxytoluene with (E)-4-Chloro-2-methyl-1-phenylsulfonyl-2-butene in the Presence of Montmorillonite K-10

International Nuclear Information System (INIS)

Lee, Sang Who; Lee, Hee Bong; Kim, Bong Chan; Sadaiah, Kadivendi; Lee, Kyuwoong; Shin, Hyunik

2013-01-01

We disclosed that MK-10 is a highly effective catalyst for the Friedel-Crafts reaction of 6 and 7 in terms of yield and of stereoselectivity. Although there are numerous applications of clays in Friedel-Crafts reaction, there is very limited example which demonstrated its effect on the stereoselectivity. In that context, our result is significant and further expansion in this direction is highly envisioned. Ubiquinone, as its name represents, exists ubiquitously in human body, particularly in the heart. It mediates the electron transfer process in mitochondria and also exerts strong antioxidant effect in its reduced form. In clinical trial, it showed beneficial effect on heart-related diseases such as myocardial infarction, angina, and other related symptoms to cause decreased mortality compared to the placebo group

A Large Scale Formal Synthesis of CoQ{sub 10}: Highly Stereoselective Friedel-Crafts Allylation Reaction of Tetramethoxytoluene with (E)-4-Chloro-2-methyl-1-phenylsulfonyl-2-butene in the Presence of Montmorillonite K-10

Energy Technology Data Exchange (ETDEWEB)

Lee, Sang Who; Lee, Hee Bong; Kim, Bong Chan; Sadaiah, Kadivendi; Lee, Kyuwoong; Shin, Hyunik [LG Life Sciences, Ltd., Daejeon (Korea, Republic of)

2013-04-15

We disclosed that MK-10 is a highly effective catalyst for the Friedel-Crafts reaction of 6 and 7 in terms of yield and of stereoselectivity. Although there are numerous applications of clays in Friedel-Crafts reaction, there is very limited example which demonstrated its effect on the stereoselectivity. In that context, our result is significant and further expansion in this direction is highly envisioned. Ubiquinone, as its name represents, exists ubiquitously in human body, particularly in the heart. It mediates the electron transfer process in mitochondria and also exerts strong antioxidant effect in its reduced form. In clinical trial, it showed beneficial effect on heart-related diseases such as myocardial infarction, angina, and other related symptoms to cause decreased mortality compared to the placebo group.

1-acetylvinyl acrylates: new captodative olefins bearing an internal probe for the evaluation of the relative reactivity of captodative against electron-deficient double bonds in Diels-Alder and Friedel-Crafts reactions

International Nuclear Information System (INIS)

Herrera, Rafael; Universidad Michoacana de San Nicolas de Hidalgo, Morelia, Mich.; Jimenez-Vazquez, Hugo A.; Delgado, Francisco; Tamariz, Joaquin; Soederberg, Bjoern C.G.

2005-01-01

The captodative olefins 1-acetylvinyl esters of methacrylic and trans-crotonic acids, 3a and 3b, have been prepared. The presence of a second double bond in the molecule, acting as an internal probe, allowed us to compare their relative reactivity in Diels-Alder and Friedel-Crafts reactions. The reactivity was evaluated with cyclopentadiene (6) as diene in Diels-Alder cycloadditions, and with furan (9) and thiophene (10) as heteroaromatic Friedel-Crafts substrates. In both processes, the captodative enone double bond proved to be more reactive than that in the acrylic moiety. FMO theory accounted for this chemo selectivity as a consequence of the major π contribution of the enone to the LUMO of these molecules. The slight exo stereoselectivity observed in the cycloaddition to 6 parallels the higher stability of the corresponding transition state, according to the results of B3LYP/6-311G(d,p) calculations. (author)

In situ activation of benzyl alcohols with XtalFluor-E: formation of 1,1-diarylmethanes and 1,1,1-triarylmethanes through Friedel-Crafts benzylation.

Science.gov (United States)

Desroches, Justine; Champagne, Pier Alexandre; Benhassine, Yasmine; Paquin, Jean-François

2015-02-28

The Friedel-Crafts benzylation of arenes using benzyl alcohols activated in situ with XtalFluor-E is described. A wide range of 1,1-diarylmethanes and 1,1,1-triarylmethanes were prepared under experimentally simple and mild conditions, without the need for a transition metal or a strong Lewis acid. Notably, the reactivity observed demonstrates the potential of XtalFluor-E to induce C-OH bond ionization and SN1 reactivity of benzylic alcohols.

4-Acyloxy-2,5-diphenyl-3-oxo-2,3-dihydrothiophene 1,1-dioxides as acylating agents in the Friedel-Crafts reaction

International Nuclear Information System (INIS)

Van Ree, T.

1989-01-01

The 'activated esters', 4-acyloxy-2,5-diphenyl-3-oxo-2,3-dihydrothiophene 1,1-dioxides, easily accessible from 4,6-diphenylthieno[3,4-d][1,3]dioxol-2-one 5,5-dioxide, have been found to be excellent acylating agents in the Friedel-Crafts reaction with olefins and activated aromatic compounds. In the case of the olefins, product mixtures containing β-chloroketones were treated with 1,8-diazabicyclo[5.4.0]undex-7-ene to afford the corresponding unsaturated ketones in 30 - 73% yields, whereas aromatic ketones were obtained in high yields. The activated esters react slightly faster than the corresponding alkanoyl chlorides, and form fewer by-products

Friedel's salt profiles from thermogravimetric analysis and thermodynamic modelling of Portland cement-based mortars exposed to sodium chloride solution

DEFF Research Database (Denmark)

Shi, Zhenguo; Geiker, Mette Rica; Lothenbach, Barbara

2017-01-01

Thermogravimetric analysis (TGA), powder X-ray diffraction (XRD) and thermodynamic modelling have been used to obtain Friedel's salt profiles for saturated mortar cylinders exposed to a 2.8 M NaCl solution. Comparison of the measured Friedel's salt profiles with the total chloride profiles...

Cu(3)(BTC)(2) as a viable heterogeneous solid catalyst for Friedel-Crafts alkylation of indoles with nitroalkenes.

Science.gov (United States)

Nagaraj, Anbu; Amarajothi, Dhakshinamoorthy

2017-05-15

In the present work, Friedel-Crafts alkylation reaction of indole with β-nitrostyrene is examined using a readily available copper based metal-organic frameworks (MOFs) namely, Cu 3 (BTC) 2 (BTC: 1,3,5-benzenetricarboxylic acid) as solid catalyst under mild reaction conditions. Among the various catalysts screened for this reaction, Cu 3 (BTC) 2 exhibits higher activity under the optimized reaction conditions. Besides the absence of leaching of active sites, it is also observed that the catalyst can be reused for four cycles with a minimal decrease in its activity. Cu 3 (BTC) 2 is used as a catalyst to synthesise a series of heterocyclic compounds with different indole and β-nitrostyrene derivatives in moderate to high yields. The present catalytic system shows comparable activity against to recent reports but the advantage of Cu 3 (BTC) 2 is that it does not require any post-functionalization and above all it can be readily synthesised, thus contributing to the synthesis of heterocyclic compounds with high biological interest. Copyright © 2017 Elsevier Inc. All rights reserved.

A novel mesoporous sulfated zirconium solid acid catalyst for Friedel-Crafts benzylation reaction

International Nuclear Information System (INIS)

Miao, Zhichao; Zhou, Jin; Zhao, Jinping; Liu, Dandan; Bi, Xu; Chou, Lingjun; Zhuo, Shuping

2017-01-01

Highlights: • A novel mesoporous ZrO_2/SO_4"2"− has been prepared via a facile one-pot EISA strategy. • The M-ZrO_2/SO_4"2"− exhibited excellent textural and acidic properties. • The introduced S species were homogeneously dispersed in mesoporous skeleton. • The M-ZrO_2/SO_4"2"− exhibited excellent catalytic performance and reusability. - Abstract: In this paper, a novel mesoporous sulfated zirconium (M-ZrO_2/SO_4"2"−) has been gotten by one-pot evaporation-induced self-assembly (one-pot EISA) strategy. The SXRD, N_2-physisorption and TEM characterization techniques indicated that M-ZrO_2/SO_4"2"− possessed distinct mesostructure with big specific surface area (133.5 m"2 g"−"1), large pore volume (0.18 cm"3 g"−"1) and narrow pore size distribution (4.90 nm). Moreover, the existing states and the influence in mesostructure of introduced S species were detailedly investigated by the XRD, N_2-physisorption, TEM, TG-DSC, FT-IR and XPS techniques and the results showed that the S species, which existed as the type of SO_4"2"−, improved the textural properties of prepared materials. In addition, the NH_3-TPD and IR spectra of adsorbed pyridine indicated the existence of strong Brønsted and Lewis acid sites in M-ZrO_2/SO_4"2"− even evacuated at 400 °C. Furthermore, the M-ZrO_2/SO_4"2"− was used as a promise solid acid catalyst and displayed excellent catalytic performance and reusability in Friedel-Crafts benzylation reaction.

A novel mesoporous sulfated zirconium solid acid catalyst for Friedel-Crafts benzylation reaction

Energy Technology Data Exchange (ETDEWEB)

Miao, Zhichao; Zhou, Jin; Zhao, Jinping; Liu, Dandan; Bi, Xu [School of Chemical Engineering, Shandong University of Technology, Zibo, 255049 (China); Chou, Lingjun, E-mail: ljchou@licp.cas.cn [State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000 (China); Zhuo, Shuping, E-mail: zhuosp_academic@yahoo.com [School of Chemical Engineering, Shandong University of Technology, Zibo, 255049 (China)

2017-07-31

Highlights: • A novel mesoporous ZrO{sub 2}/SO{sub 4}{sup 2−} has been prepared via a facile one-pot EISA strategy. • The M-ZrO{sub 2}/SO{sub 4}{sup 2−} exhibited excellent textural and acidic properties. • The introduced S species were homogeneously dispersed in mesoporous skeleton. • The M-ZrO{sub 2}/SO{sub 4}{sup 2−} exhibited excellent catalytic performance and reusability. - Abstract: In this paper, a novel mesoporous sulfated zirconium (M-ZrO{sub 2}/SO{sub 4}{sup 2−}) has been gotten by one-pot evaporation-induced self-assembly (one-pot EISA) strategy. The SXRD, N{sub 2}-physisorption and TEM characterization techniques indicated that M-ZrO{sub 2}/SO{sub 4}{sup 2−} possessed distinct mesostructure with big specific surface area (133.5 m{sup 2} g{sup −1}), large pore volume (0.18 cm{sup 3} g{sup −1}) and narrow pore size distribution (4.90 nm). Moreover, the existing states and the influence in mesostructure of introduced S species were detailedly investigated by the XRD, N{sub 2}-physisorption, TEM, TG-DSC, FT-IR and XPS techniques and the results showed that the S species, which existed as the type of SO{sub 4}{sup 2−}, improved the textural properties of prepared materials. In addition, the NH{sub 3}-TPD and IR spectra of adsorbed pyridine indicated the existence of strong Brønsted and Lewis acid sites in M-ZrO{sub 2}/SO{sub 4}{sup 2−} even evacuated at 400 °C. Furthermore, the M-ZrO{sub 2}/SO{sub 4}{sup 2−} was used as a promise solid acid catalyst and displayed excellent catalytic performance and reusability in Friedel-Crafts benzylation reaction.

Microwave-assisted facile and rapid Friedel-Crafts benzoylation of arenes catalysed by bismuth trifluoromethanesulfonate

DEFF Research Database (Denmark)

Tran, Phoung Hoang; Hansen, Poul Erik; Pham, Thuy Than

2014-01-01

The catalytic activity of metal triflates was investigated in Friedel–Crafts benzoylation under microwave irradiation. Friedel–Crafts benzoylation with benzoyl chloride of a variety of arenes containing electron-rich and electron-poor rings using bismuth triflate under microwave irradiation is de...

Friedel oscillations in graphene

DEFF Research Database (Denmark)

Lawlor, J. A.; Power, S. R.; Ferreira, M.S.

2013-01-01

Symmetry breaking perturbations in an electronically conducting medium are known to produce Friedel oscillations in various physical quantities of an otherwise pristine material. Here we show in a mathematically transparent fashion that Friedel oscillations in graphene have a strong sublattice...... asymmetry. As a result, the presence of impurities and/or defects may impact the distinct graphene sublattices very differently. Furthermore, such an asymmetry can be used to explain the recent observations that nitrogen atoms and dimers are not randomly distributed in graphene but prefer to occupy one...

Detecting Friedel oscillations in ultracold Fermi gases

Science.gov (United States)

Riechers, Keno; Hueck, Klaus; Luick, Niclas; Lompe, Thomas; Moritz, Henning

2017-09-01

Investigating Friedel oscillations in ultracold gases would complement the studies performed on solid state samples with scanning-tunneling microscopes. In atomic quantum gases interactions and external potentials can be tuned freely and the inherently slower dynamics allow to access non-equilibrium dynamics following a potential or interaction quench. Here, we examine how Friedel oscillations can be observed in current ultracold gas experiments under realistic conditions. To this aim we numerically calculate the amplitude of the Friedel oscillations which are induced by a potential barrier in a 1D Fermi gas and compare it to the expected atomic and photonic shot noise in a density measurement. We find that to detect Friedel oscillations the signal from several thousand one-dimensional systems has to be averaged. However, as up to 100 parallel one-dimensional systems can be prepared in a single run with present experiments, averaging over about 100 images is sufficient.

Transition state structures in solution

International Nuclear Information System (INIS)

Bertran, J.; Lluch, J. M.; Gonzalez-Lafont, A.; Dillet, V.; Perez, V.

1995-01-01

In the present paper the location of transition state structures for reactions in solution has been studied. Continuum model calculations have been carried out on the Friedel-Crafts alkylation reaction and a proton transfer through a water molecule between two oxygen atoms in formic acid. In this model the separation between the chemical system and the solvent has been introduced. On the other hand, the discrete Monte Carlo methodology has also been used to simulate the solvent effect on dissociative electron transfer processes. In this model, the hypothesis of separability is not assumed. Finally, the validity of both approaches is discussed

From Gender-segregated Subjects to Multi-material Craft: Craft Student Teachers’Views on the Future of the Craft Subject

Directory of Open Access Journals (Sweden)

Jaana Lepistö

2015-12-01

Full Text Available This paper describes the views of student teachers of craft about the future of craft as a school subject. The study was conducted at the University of Turku, Department of Teacher Education, in Rauma in 2014. The literature review revealed that the subject of craft in Finnish basic education is understood as a dialog between the maker and the materials. However, teaching and learning craft in schools and in teacher education has a strong gender-based tradition. The aim of this study is to investigate student teachers’ understanding of craft as a school subject in the future and their solutions to teaching craft in basic education. The data were collected from essays (N = 20 written by student teachers of craft. The essays were analyzed qualitatively using content analysis. The results showed that the student teachers of craft viewed holistic craft, reflective action readiness, entrepreneurial behaviour, multiple skills, the use of versatile materials, and craft as sources of pleasure and the main solutions for the future of craft as a subject.

Heteropoly acid encapsulated into zeolite imidazolate framework (ZIF-67) cage as an efficient heterogeneous catalyst for Friedel–Crafts acylation

Energy Technology Data Exchange (ETDEWEB)

Ammar, Muhammad; Jiang, Sai; Ji, Shengfu, E-mail: jisf@mail.buct.edu.cn

2016-01-15

A new strategy has been developed for the encapsulation of the phosphotungstic heteropoly acid (H{sub 3}PW{sub 12}O{sub 40} denoted as PTA) into zeolite imidazolate framework (ZIF-67) cage and the PTA@ZIF-67(ec) catalysts with different PTA content were prepared. The structure of the catalysts was characterized by XRD, BET, SEM, FT-IR, ICP-AES and TG. The catalytic activity and recovery properties of the catalysts for the Friedel-Crafts acylation of anisole with benzoyl chloride were evaluated. The results showed that 14.6–31.7 wt% PTA were encapsulated in the ZIF-67 cage. The PTA@ZIF-67(ec) catalysts had good catalytic activity for Friedel-Crafts acylation. The conversion of anisole can reach ~100% and the selectivity of the production can reach ~94% over 26.5 wt% PTA@ZIF-67(ec) catalyst under the reaction condition of 120 °C and 6 h. After reaction, the catalyst can be easily separated from the reaction mixture by the centrifugation. The recovered catalyst can be reused five times and the selectivity can be kept over 90%. - Graphical abstract: The PTA@ZIF-67 catalysts with different PTA content were prepared by encapsulating the PTA into ZIF-67 cage and the as-synthesized catalysts exhibited good catalytic activity for the Friedel–Craft acylation of anisole with benzoyl chloride.

A novel kind of concrete superplasticizer based on aryl isocyanate polycondensates

Science.gov (United States)

Ding, Bei; Qian, Shanshan; Qiu, Ying; Wang, Yi; Zheng, Chunyang; Wang, Gaoming

2017-03-01

A novel superplasticizer was synthesized by polycondensation of Alkyl phenol phosphate and toluene diisocyanate grafting with methoxy polyoxyethylene ether (MPEG). The chemical structure and molecular weight of polycondensates molecules were determined by 1H nuclear magnetic resonance (NMR) and gel permeation chromatography respectively. The experimental results indicated that the polycondensates of Alkyl phenol phosphate and toluene diisocyanate grafting with MPEG not only exhibited good water-reducing properties but also demonstrated effective anti-clay abilities alone. Furthermore, the polycondensates showed good fluidity maintaining abilities within 1-3 h and good workability of concrete. The results of T500 Time experiments show that lower plastic viscosity of the polycondensates leads to fresh concrete much “looser” than conventional PCEs in self-compacting concrete.

On the Effect of Microwave Energy on Lipase-Catalyzed Polycondensation Reactions

Directory of Open Access Journals (Sweden)

Alessandro Pellis

2016-09-01

Full Text Available Microwave energy (MWe is, nowadays, widely used as a clean synthesis tool to improve several chemical reactions, such as drug molecule synthesis, carbohydrate conversion and biomass pyrolysis. On the other hand, its exploitation in enzymatic reactions has only been fleetingly investigated and, hence, further study of MWe is required to reach a precise understanding of its potential in this field. Starting from the authors’ experience in clean synthesis and biocatalyzed reactions, this study sheds light on the possibility of using MWe for enhancing enzyme-catalyzed polycondensation reactions and pre-polymer formation. Several systems and set ups were investigated involving bulk and organic media (solution phase reactions, different enzymatic preparations and various starting bio-based monomers. Results show that MWe enables the biocatalyzed synthesis of polyesters and pre-polymers in a similar way to that reported using conventional heating with an oil bath, but in a few cases, notably bulk phase polycondensations under intense microwave irradiation, MWe leads to a rapid enzyme deactivation.

Stabilization of chromium-bearing electroplating sludge with MSWI fly ash-based Friedel matrices.

Science.gov (United States)

Qian, Guangren; Yang, Xiaoyan; Dong, Shixiang; Zhou, Jizhi; Sun, Ying; Xu, Yunfeng; Liu, Qiang

2009-06-15

This work investigated the feasibility and effectiveness of MSWI fly ash-based Friedel matrices on stabilizing/solidifying industrial chromium-bearing electroplating sludge using MSWI fly ash as the main raw material with a small addition of active aluminum. The compressive strength, leaching behavior and chemical speciation of heavy metals and hydration phases of matrices were characterized by TCLP, XRD, FTIR and other experimental methods. The results revealed that MSWI fly ash-based Friedel matrices could effectively stabilize chromium-bearing electroplating sludge, the formed ettringite and Friedel phases played a significant role in the fixation of heavy metals in electroplating sludge. The co-disposal of chromium-bearing electroplating sludge and MSWI fly ash-based Friedel matrices with a small addition of active aluminum is promising to be an effective way of stabilizing chromium-bearing electroplating sludge.

The Relation between the Electric Conductance of Nanostructure Bridge and Friedel Sum Rule

International Nuclear Information System (INIS)

Kotani, Y; Shima, N; Makoshi, K

2012-01-01

We analyze the electric conductance through nanostructure bridges in terms of phase-shifts, which satisfy the Friedel sum rule. The phase-shifts are given by solving the eigenvalue equation obtained by extending the method applied to a single impurity problem in a metal. The local charge neutrality condition is introduced through the Friedel sum rule. It is analytically shown that the electric conductance can increase as the two electrodes separate with the condition in which the phase-shifts satisfy the Friedel sum rule. The increment of the distance between two electrodes is obtained by gradually separating interatomic distance.

An efficient and green synthesis of 1-indanone and 1-tetralone via intramolecular Friedel-Crafts acylation reaction

DEFF Research Database (Denmark)

Tran, Phuong Hoang; Huynh, Vy Hieu; Hansen, Poul Erik

2015-01-01

Metal-triflate-catalyzed intramolecular Friedel–Crafts acylation of 3-arylpropanoic and 4-arylbutanoic acids in triflate-anion ionic liquids under monomodal microwave irradiation is reported. The environmentally benign synthetic procedure allows the formation of cyclic ketones in good yields with...

Friedel Transition in Layered Superconductors

International Nuclear Information System (INIS)

Dzierzawa, M.; Zamora, M.; Baeriswyl, D.; Bagnoud, X.

1996-01-01

Weakly coupled superconducting layers are described by the anisotropic 3D XY model. A low-temperature layer decoupling due to a proliferation of fluxons between planes, as proposed by Friedel, does not occur. The same is true for a periodic superlattice of high and low T c layers, although the interplane coherence can become extremely weak. On the other hand a true layer decoupling is found for a random stack. copyright 1996 The American Physical Society

Synthesis of polyglycocarbonates through polycondensation of glucopyranosides with CO2

KAUST Repository

Pati, Debasis

2017-03-17

Starting from α-methyl D-glucopyranoside (MDG), three strategies of synthesis of polyglycocarbonates through direct polycondensation with CO2 were tried. Using unprotected MDG for reaction with CO2, water soluble oligoglycocarbonates could be obtained; α-methyl-2,3-di-O-methyl D-glucopyranoside (MDMG) which had its hydroxyls in the C2 and C3 positions protected was also subjected to polycondensation with CO2, affording polyglycocarbonates of limited molar mass due to an equilibrium that prevented the progress of the condensation reaction as in the previous case. Lastly, the polycondensation of MDMG with CO2 and aliphatic or aromatic dihalides was carried out in the presence of Cs2CO3; this resulted in the formation of polyglycocarbonates of rather high molar mass containing either aliphatic or aromatic linkers. The structures of the synthesized monomers and polyglycocarbonates were thoroughly characterized. The thermal properties of the obtained polyglycocarbonates were further investigated by TGA and DSC.

Synthesis of polyglycocarbonates through polycondensation of glucopyranosides with CO2

KAUST Repository

Pati, Debasis; Chen, Zuliang; Feng, Xiaoshuang; Hadjichristidis, Nikolaos; Gnanou, Yves

2017-01-01

Starting from α-methyl D-glucopyranoside (MDG), three strategies of synthesis of polyglycocarbonates through direct polycondensation with CO2 were tried. Using unprotected MDG for reaction with CO2, water soluble oligoglycocarbonates could be obtained; α-methyl-2,3-di-O-methyl D-glucopyranoside (MDMG) which had its hydroxyls in the C2 and C3 positions protected was also subjected to polycondensation with CO2, affording polyglycocarbonates of limited molar mass due to an equilibrium that prevented the progress of the condensation reaction as in the previous case. Lastly, the polycondensation of MDMG with CO2 and aliphatic or aromatic dihalides was carried out in the presence of Cs2CO3; this resulted in the formation of polyglycocarbonates of rather high molar mass containing either aliphatic or aromatic linkers. The structures of the synthesized monomers and polyglycocarbonates were thoroughly characterized. The thermal properties of the obtained polyglycocarbonates were further investigated by TGA and DSC.

Reaction kinetics of polybutylene terephthalate polycondensation reaction

NARCIS (Netherlands)

Darda, P. J.; Hogendoorn, J. A.; Versteeg, G. F.; Souren, F.

2005-01-01

The kinetics of the forward polycondensation reaction of polybutylene terephthalate (PBT) has been investigated using thermogravimetric analysis (TGA). PBT - prepolymer with an initial degree of polymerization of 5.5 was used as starting material. The PBT prepolymer was prepared from dimethyl

Synthesis of a new scintillator 2-phenyl-5(4-p-terphenylyl)Oxazole

International Nuclear Information System (INIS)

Dhane, D.L.; Gaiki, G.M.

1979-01-01

Friedel-Crafts reaction between hippuryl chloride and p-terphenyl gave benzoylaminomethyl-(4-p-terphenylyl) ketone (II) which on cyclodehydration gave hitherto unreported 2-phenyl-5-(4-p-terphenylyl) oxazole (I). IR, UV absorption and fluorescence spectra of I have been recorded. The performance of I as a scintillator solute has been tested. (auth.)

Indium triflate in 1-isobutyl-3-methylimidazolium dihydrogenphosphate: an efficient and green catalytic system for Friedel-Crafts acylation

DEFF Research Database (Denmark)

Tran, Phuong Hoang; Hoang, Huy Manh; Chau, Duy-Khiem Nguyen

2015-01-01

Indium triflate in the ionic liquid, 1-isobutyl-3-methylimidazolium dihydrogen phosphate ([i-BMIM]H2PO4), was found to show enhanced catalytic activity in the Friedel–Crafts acylation of various aromatic compounds with acid anhydrides. The catalytic system was easily recovered and reused without...

The meaning of craft: craft makers' descriptions of craft as an occupation.

Science.gov (United States)

Pöllänen, Sinikka

2013-05-01

The aim of this study is to examine how craft makers describe the meaning of craft as an activity in relation to their well-being. The study is based on an analysis of the written narratives of 92 textile craft makers aged 16 to 84. Based on the results, the well-being enhancing nature of craft as a meaningful occupation for those interested in crafting is evident. The significance of craft making as an occupation is described by the following three themes: (a) "the meaning and value of crafts", (b) "the feelings experienced during craft activity", and (c) "the holisticity and intentionality of craft-making". As an activity and a metaphor, craft making helped the participants to adjust to life situations. Elements of craft that enhance well-being can be traced to both the artefacts and the sense of achievement gained in producing them. The effects of craft include personal growth, development of physical and cognitive skills, control of one's body, thoughts, and feelings, as well as cultural and social awareness. The results indicate that the participants noticed the significance of craft as an agony- and stress-reducing and mind-calming activity. Holistic craft and ordinary craft played different roles in maintaining well-being.

Decomposition of cumyl peracetate on silica

International Nuclear Information System (INIS)

Barbas, J.T.; Leffler, J.E.

1985-01-01

When the Friedel-Crafts reaction was carried out with 1-1 13 C-2-Ph-d 5 and an excess of [ 2 H 6 ] benzene, the mass spectrum of the product, 1,2-diphenylethane again showed extensive hydrogen deuterium exchanges and the relative abundances for the various isotopomeric molecular ions for the product were given. The present results showed that because of exchanges, isotopes of hydrogen cannot be used in tracer studies on Friedel-Crafts alkylations with a high concentration of AlCl 3 as catalysts and with an excess of the arene being alkylated as solvents. The present work demonstrated that dynamic exchanges among both aromatic and side-chain H atoms do take place during Friedel-Crafts reactions, even though the occurrence of such dynamic process may not be apparent when the H atoms are not labeled. 1 table

Synthesis and Electronic Properties of Fluoreno[2,1-a]fluorenedione and Fluoreno[1,2-a]fluorenedione.

Science.gov (United States)

Hacker, Allison S; Pavano, Mauricio; Wood, James E; Immoos, Chad E; Hashimoto, Hannah; Genis, Sam P; Frantz, Derik K

2018-01-05

The [2,1-a]- and [1,2-a]-isomers of fluorenofluorenedione have been synthesized via intramolecular Friedel-Crafts acylations. DFT calculations indicate that the [1,2-a]-isomer adopts a twisted, helical C 2 -symmetric structure and that its protonated form is the thermodynamic product of the Friedel-Crafts acylation in hot sulfuric acid. Absorption spectroscopy and cyclic voltammetry measurements provide experimental estimations of frontier molecular orbital energy levels, which are reported and discussed.

Trends in the development of polycondensation and condensation polymers

International Nuclear Information System (INIS)

Vinogradova, Svetlana V; Vasnev, Valery A

2004-01-01

New trends in the development of polycondensation methods, elucidation of the main principles of macromolecular design of polymeric chains and preparation of novel promising condensation polymers are considered and analysed.

Removal of arsenic from water by Friedel's salt (FS: 3CaO·Al2O3·CaCl2·10H2O).

Science.gov (United States)

Zhang, Danni; Jia, Yongfeng; Ma, Jiayu; Li, Zhibao

2011-11-15

Low levels of arsenic can be effectively removed from water by adsorption onto various materials and searching for low-cost, high-efficiency new adsorbents has been a hot topic in recent years. In the present study, the performance of Friedel's salt (FS: 3CaO·Al(2)O(3)·CaCl(2)·10H(2)O), a layered double hydroxide (LDHs), as an adsorbent for arsenic removal from aqueous solution was investigated. Friedel's salt was synthesized at lower temperature (50°C) compared to traditional autoclave methods by reaction of calcium chloride with sodium aluminate. Kinetic study revealed that adsorption of arsenate by Friedel's salt was fast in the first 12h and equilibrium was achieved within 48 h. The adsorption kinetics are well described by second-order Lageren equation. The adsorption capacity of the synthesized sorbent for arsenate at pH 4 and 7 calculated from Langmuir adsorption isotherms was 11.85 and 7.80 mg/g, respectively. Phosphate and silicate markedly decreased the removal of arsenate, especially at higher pH, but sulfate was found to suppress arsenate adsorption at lower pH and the adverse effect was disappeared at pH ≥ 6. Common metal cations (Ca(2+), Mg(2+)) enhanced arsenate adsorption. The results suggest that Friedel's salt is a potential cost-effective adsorbent for arsenate removal in water treatment. Copyright © 2011 Elsevier B.V. All rights reserved.

Thermal polycondensation of anthracene for carbon precursors

Czech Academy of Sciences Publication Activity Database

Valovičová, Věra; Plevová, Eva; Vaculíková, Lenka; Ritz, M.; Vallová, S.

2016-01-01

Roč. 124, č. 1 (2016), s. 261-267 ISSN 1388-6150 R&D Projects: GA MŠk ED2.1.00/03.0082; GA MŠk(CZ) LO1406 Institutional support: RVO:68145535 Keywords : anthracene * polycondensation * mesophase Subject RIV: DB - Geology ; Mineralogy Impact factor: 1.953, year: 2016 http://link.springer.com/article/10.1007%2Fs10973-015-5124-9

Transformation Craft (T-Craft) Concept Study

National Research Council Canada - National Science Library

Marks, Cynthia; Phelps, Chance; Ryan, Justin; Sorensen, Paul

2007-01-01

The objective of the Transformation Craft (T-Craft) innovation team was to develop a conceptual craft that addresses the problem of transporting military vehicles at high speed from the Sea Base to troops inland...

Utilization of acidic α-amino acids as acyl donors: an effective stereo-controllable synthesis of aryl-keto α-amino acids and their derivatives.

Science.gov (United States)

Wang, Lei; Murai, Yuta; Yoshida, Takuma; Okamoto, Masashi; Tachrim, Zetryana Puteri; Hashidoko, Yasuyuki; Hashimoto, Makoto

2014-05-16

Aryl-keto-containing α-amino acids are of great importance in organic chemistry and biochemistry. They are valuable intermediates for the construction of hydroxyl α-amino acids, nonproteinogenic α-amino acids, as well as other biofunctional components. Friedel-Crafts acylation is an effective method to prepare aryl-keto derivatives. In this review, we summarize the preparation of aryl-keto containing α-amino acids by Friedel-Crafts acylation using acidic α-amino acids as acyl-donors and Lewis acids or Brönsted acids as catalysts.

Dynamical Friedel oscillations of a Fermi sea

Science.gov (United States)

Zhang, J. M.; Liu, Y.

2018-02-01

We study the scenario of quenching an interaction-free Fermi sea on a one-dimensional lattice ring by suddenly changing the potential of a site. From the point-of-view of the conventional Friedel oscillation, which is a static or equilibrium problem, it is of interest what temporal and spatial oscillations the local sudden quench will induce. Numerically, the primary observation is that for a generic site, the local particle density switches between two plateaus periodically in time. Making use of the proximity of the realistic model to an exactly solvable model and employing the Abel regularization to assign a definite value to a divergent series, we obtain an analytical formula for the heights of the plateaus, which turns out to be very accurate for sites not too close to the quench site. The unexpect relevance and the incredible accuracy of the Abel regularization are yet to be understood. Eventually, when the contribution of the defect mode is also taken into account, the plateaus for those sites close to or on the quench site can also be accurately predicted. We have also studied the infinite lattice case. In this case, ensuing the quench, the out-going wave fronts leave behind a stable density oscillation pattern. Because of some interesting single-particle property, this dynamically generated Friedel oscillation differs from its conventional static counterpart only by the defect mode.

Contextualising Craft: Pedagogical Models for Craft Education

Science.gov (United States)

Pollanen, Sinikka

2009-01-01

Craft education in Finland is, in many aspects, in a state of change. This concerns the independent position of craft as a school subject, the content of the compulsory craft courses containing textiles and technical work, the implementation of the new concept of a holistic craft process in the National Core Curriculum and so on. This bears…

Crafting Sustainable Development Solutions: Frugal Innovations of Grassroots Entrepreneurs

Directory of Open Access Journals (Sweden)

Mario Pansera

2016-01-01

Full Text Available A shift in the entrepreneurial landscape is taking place brought about by grassroots innovators with little formal education and technological knowhow, living and working in penurious environments. This research represents an emerging third wave of literature on Bottom of the Pyramid innovation, where products are offered for and by the underserved. Using primary and secondary data derived from four cases of grassroots entrepreneurs in the Indian Subcontinent, the study explores the phenomenon where resource scarce entrepreneurs craft solutions that are environmental friendly, with low overall ownership costs, and use locally available material. We argue that the grassroots phenomenon can be fruitfully exploited to achieve the new Sustainable Development Goals proposed by the UN as a post-2015 strategy for the future of global governance. These innovations might have a tremendous impact not only in terms of serving unmet and ignored consumer needs, but also longer term impacts through enhanced productivity, sustainability, poverty reduction and inclusion promotion.

Anisotropic Friedel oscillations in a two-dimensional electron gas with a Rashba-Dresselhaus spin-orbit interaction

Science.gov (United States)

Kozlov, I. V.; Kolesnichenko, Yu. A.

2017-07-01

We present a theoretical study of the spatial distribution of the local density of states (LDOS) and the local magnetization density (LMD) in the vicinity of a magnetic point-defect in a degenerate two-dimensional electron gas with a mixed Rashba-Dresselhaus spin-orbit coupling interaction (SOI). The dependence of the Friedel oscillations, which arise under these conditions, on the ratio of the SOI constants is investigated. We obtain asymptotic expressions for the oscillatory parts of the LDOS and the LMD, that are accurate for large distances from the defect. It is shown, that the Friedel oscillations are significantly anisotropic and contain several harmonics for certain ratios of the SOI constants. Period of the oscillations for directions along the symmetry axes of the Fermi contours are determined. Finally, we introduce a method for determining the values of the two SOI constants by measuring the period of the Friedel oscillations of the LDOS and the LMD for different harmonics.

Creating Chicago History: Making Outreach Craft Activities Meaningful

Science.gov (United States)

Karp, Madeline

2012-01-01

When it comes to having a traveling outreach activity for a museum, a craft can seem like the perfect solution. It can seemingly be all things at once--educational, quick and fun. But, if poorly constructed, crafts can also have serious fallbacks. Using the Chicago History Museum and the Millennium Park Family Fun Festival as a case study, this…

Room temperature inorganic polycondensation of oxide (Cu2O and ZnO) nanoparticles and thin films preparation by the dip-coating technique

OpenAIRE

Salek, Guillaume; Tenailleau, Christophe; Dufour, Pascal; Guillemet-Fritsch, Sophie

2015-01-01

International audience; Oxide thin solid filmswere prepared by dip-coating into colloidal dispersions of oxide nanoparticles stabilized at room temperaturewithout the use of chelating or complex organic dispersing agents. Crystalline oxide nanoparticles were obtained by inorganic polycondensation and characterized by X-ray diffraction and field emission gun scanning electron microscopy. Water and ethanol synthesis and solution stabilization of oxide nanoparticle method was optimized to prepar...

DEVELOPMENT OF INTERACTIVE MULTIMEDIA COURSEWARE (E-CRAFT FOR CRAFT EDUCATION

Directory of Open Access Journals (Sweden)

Salyani OSMAN,

2012-08-01

Full Text Available The way of teaching and learning traditional crafts have always used traditional apprenticeship learning methods where the expert facilitates transfer of practice skill sets to novices. As a craft has been taught in conventional approach, the students and experts have been facing several problems especially when expert needs to teach a group of students. An appropriate mapping of craft education and Information and Communication Technologies using Multimedia technology for instance, has the potential in transforming traditional craft learning into more flexible environment. This paper reports on a research project on development of an interactive multimedia courseware package for teaching and learning traditional craft called e-CRAFT. The e-CRAFT is specially designed for songket weaving course taught to certificate and diploma students from Fakulti Seni Kraf Tenunan in their first year study at Institut Kraf Negara, Malaysia (National Craft Institute. The courseware was developed in a web-based environment and overall development process was based on the Dick and Carey's process model and conceptual Instructional Design framework. It is made up of eight learning modules: Introduction, Materials & Tools, Knowing Motifs, Learn How to Weave, Quizzes & Test, Online Discussion, Glossary and Help module. In order to test whether the courseware is suitable in terms of usability, pilot testing was done to a sample of 10 students. The results from pilot test received positive feedback which signifies the courseware is considered acceptable for effectiveness study and help for further improve of the e-CRAFT courseware.

Room temperature inorganic polycondensation of oxide (Cu2O and ZnO) nanoparticles and thin films preparation by the dip-coating technique

International Nuclear Information System (INIS)

Salek, G.; Tenailleau, C.; Dufour, P.; Guillemet-Fritsch, S.

2015-01-01

Oxide thin solid films were prepared by dip-coating into colloidal dispersions of oxide nanoparticles stabilized at room temperature without the use of chelating or complex organic dispersing agents. Crystalline oxide nanoparticles were obtained by inorganic polycondensation and characterized by X-ray diffraction and field emission gun scanning electron microscopy. Water and ethanol synthesis and solution stabilization of oxide nanoparticle method was optimized to prepare two different structural and compositional materials, namely Cu 2 O and ZnO. The influence of hydrodynamic parameters over the particle shape and size is discussed. Spherical and rod shape nanoparticles were formed for Cu 2 O and ZnO, respectively. Isoelectric point values of 7.5 and 8.2 were determined for cuprous and zinc oxides, respectively, after zeta potential measurements. A shear thinning and thixotropic behavior was observed in both colloidal sols after peptization at pH ~ 6 with dilute nitric acid. Every colloidal dispersion stabilized in a low cost and environmentally friendly azeotrope solution composed of 96 vol.% of ethanol with water was used for the thin film preparation by the dip-coating technique. Optical properties of the light absorber cuprous oxide and transparent zinc oxide thin solid films were characterized by means of transmittance and reflectance measurements (300–1100 nm). - Highlights: • Room temperature inorganic polycondensation of crystalline oxides • Water and ethanol synthesis and solution stabilization of oxide nanoparticles • Low cost method for thin solid film preparation

Human radiation studies: Remembering the early years: Oral history of radiologist Hymer L. Friedell, M.D., Ph.D., conducted January 28, 1995

International Nuclear Information System (INIS)

Fisher, D.; Melamed, E.

1995-07-01

NThis report is a transcript of an interview with Hymer L. Friedell by representatives of the US DOE Office of Human Radiation Experiments. Dr. Friedell was selected for this interview because of his participation in the early stages of the medical use of radioisotopes, his important role in the Manhattan Engineer District Medical Division, and his distinguished medical career and his involvement in the distribution of isotopes and the approval for their use in humans. After a brief biographical sketch Dr. Friedell discusses his remembrances on a wide range of subjects. Topics discussed include pre-war radiation therapy, information provided to patients, the Army Medical Corps and the Manhattan Project, his work at the Chicago Metallurgical Laboratory, inspection visits of Manhattan Project facilities and proposed sites, Plutonium injection studies, and actions of the AEC Isotope Distribution Committee

Friedel oscillations in one-dimensional metals: From Luttinger's theorem to the Luttinger liquid

International Nuclear Information System (INIS)

Vieira, Daniel; Freire, Henrique J.P.; Campo, V.L.; Capelle, K.

2008-01-01

Charge density and magnetization density profiles of one-dimensional metals are investigated by two complementary many-body methods: numerically exact (Lanczos) diagonalization, and the Bethe-Ansatz local-density approximation with and without a simple self-interaction correction. Depending on the magnetization of the system, local approximations reproduce different Fourier components of the exact Friedel oscillations

Crafting in context: Exploring when job crafting is dysfunctional for performance effectiveness.

Science.gov (United States)

Dierdorff, Erich C; Jensen, Jaclyn M

2018-05-01

Job crafting theory purports that the consequences of revising one's work role can be simultaneously beneficial and detrimental. Previous research, however, has almost exclusively emphasized the beneficial outcomes of job crafting. In the current study, we proposed dysfunctional consequences of crafting for performance-related outcomes in the form of a U-shaped relationship between job crafting and performance effectiveness (managerial ratings of job proficiency and peer ratings of citizenship behavior). We further predicted that elements of the task context (autonomy and ambiguity) and the social context (interdependence and social support) moderate these curvilinear relationships. Consistent with previous research, job crafting displayed positive and linear effects on work-related attitudes (job satisfaction and affective commitment). Consistent with our predictions, moderate levels of crafting were associated with dysfunctional performance-related outcomes and features of work context either exacerbated or dissipated these dysfunctional consequences of job crafting for individuals. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

Room temperature inorganic polycondensation of oxide (Cu{sub 2}O and ZnO) nanoparticles and thin films preparation by the dip-coating technique

Energy Technology Data Exchange (ETDEWEB)

Salek, G.; Tenailleau, C., E-mail: tenailleau@chimie.ups-tlse.fr; Dufour, P.; Guillemet-Fritsch, S.

2015-08-31

Oxide thin solid films were prepared by dip-coating into colloidal dispersions of oxide nanoparticles stabilized at room temperature without the use of chelating or complex organic dispersing agents. Crystalline oxide nanoparticles were obtained by inorganic polycondensation and characterized by X-ray diffraction and field emission gun scanning electron microscopy. Water and ethanol synthesis and solution stabilization of oxide nanoparticle method was optimized to prepare two different structural and compositional materials, namely Cu{sub 2}O and ZnO. The influence of hydrodynamic parameters over the particle shape and size is discussed. Spherical and rod shape nanoparticles were formed for Cu{sub 2}O and ZnO, respectively. Isoelectric point values of 7.5 and 8.2 were determined for cuprous and zinc oxides, respectively, after zeta potential measurements. A shear thinning and thixotropic behavior was observed in both colloidal sols after peptization at pH ~ 6 with dilute nitric acid. Every colloidal dispersion stabilized in a low cost and environmentally friendly azeotrope solution composed of 96 vol.% of ethanol with water was used for the thin film preparation by the dip-coating technique. Optical properties of the light absorber cuprous oxide and transparent zinc oxide thin solid films were characterized by means of transmittance and reflectance measurements (300–1100 nm). - Highlights: • Room temperature inorganic polycondensation of crystalline oxides • Water and ethanol synthesis and solution stabilization of oxide nanoparticles • Low cost method for thin solid film preparation.

From Gender-segregated Subjects to Multi-material Craft: Craft Student Teachers’Views on the Future of the Craft Subject

OpenAIRE

Jaana Lepistö; Eila Lindfors

2015-01-01

This paper describes the views of student teachers of craft about the future of craft as a school subject. The study was conducted at the University of Turku, Department of Teacher Education, in Rauma in 2014. The literature review revealed that the subject of craft in Finnish basic education is understood as a dialog between the maker and the materials. However, teaching and learning craft in schools and in teacher education has a strong gender-based tradition. The aim of this study is to in...

Learning craft skills. Exploring preschoolers' craft making process

Directory of Open Access Journals (Sweden)

Virpi Yliverronen

2016-06-01

Full Text Available The aim of this study was to explore a preschooler craft-making process in which 18 preschool novices cut pieces for fabric bags and designed and printed patterns to decorate the bags. Through the task, children were familiarised with a small-scale holistic craft process. The intention was to determine how preschoolers perceived, verbalised and interpreted the craft-making process and how children used bodily expressions when explaining a learned craft skill. The present study relies on the videographic method: two preschool groups’ stamp printing activities were recorded, and each child was interviewed individually. Children’s embodied expressions were particularly in focus in video analysis. The results reveal that all the children were able to sufficiently explain the making phase, however, some children compensated for missing words using bodily and facial expressions and gestures when talking about making. The results showed that children worked logically, and the skill learning phases of perceiving, making, and interpretation were revealed from their learning.

Cs2CO3-promoted polycondensation of CO2with diols and dihalides for the synthesis of miscellaneous polycarbonates

KAUST Repository

Chen, Zuliang

2016-07-12

A one-pot protocol for the direct synthesis of polycarbonates through polycondensation of diols, dihalides and CO2 in the presence of Cs2CO3 is described. The conditions were optimized by studying the polycondensation of CO2 with 1,4-phenylenedimethanol and 1,4-dibromobutane as model monomers. Then, diols and dihalides with different spacers between the reactive groups including aliphatic, aromatic and poly(ethylene glycol) were tested under optimal conditions. Miscellaneous polycarbonates exhibiting molar masses in the range of 43 000 g mol-1 (GPC) and conversion higher than 96% could be obtained. The proposed mechanism rules out the possibility of ether linkage formation during polycondensation and accounts for the creation of carbonate linkages in two different ways. The thermal properties of the synthesized polycarbonates were unveiled by differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). © 2016 The Royal Society of Chemistry.

32 CFR 700.406 - Naval Vessel Register, classification of naval craft, and status of ships and service craft.

Science.gov (United States)

2010-07-01

... craft, and status of ships and service craft. 700.406 Section 700.406 National Defense Department of... Register, classification of naval craft, and status of ships and service craft. (a) The Chief of Naval... craft and the designation of status for each ship and service craft. (b) Commissioned vessels and craft...

Aza-crown ether complex cation ionic liquids: preparation and applications in organic reactions.

Science.gov (United States)

Song, Yingying; Cheng, Chen; Jing, Huanwang

2014-09-26

Aza-crown ether complex cation ionic liquids (aCECILs) were devised, fabricated, and characterized by using NMR spectroscopy, MS, thermogravimetric differential thermal analysis (TG-DTA), elemental analysis and physical properties. These new and room-temperature ILs were utilized as catalysts in various organic reactions, such as the cycloaddition reaction of CO2 to epoxides, esterification of acetic acid and alcohols, the condensation reaction of aniline and propylene carbonate, and Friedel-Crafts alkylation of indole with aldehydes were investigated carefully. In these reactions, the ionic liquid exhibited cooperative catalytic activity between the anion and cation. In addition, the aza-[18-C-6HK][HSO4]2 was the best acidic catalyst in the reactions of esterification and Friedel-Crafts alkylation under mild reaction conditions. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Computer Crafts for Kids.

Science.gov (United States)

Kuntz, Margy; Kuntz, Ann

This work presents a collection of craft projects that can be created by children. Necessary for completion of each craft is an IBM-compatible computer running Windows, "Word for Windows 6.0," with a mouse, a printer, and plain white printer paper. Simple craft supplies, including glue and scissors, also are needed. In each activity the child is…

Craft qualities translated from traditional crafts to smart textile services

NARCIS (Netherlands)

Kuusk, K.; Wensveen, S.A.G.; Tomico Plasencia, O.

2016-01-01

In this article we suggest craft and craftsmanship as an inspiration to design more sustainable smart textile services. We look into the opportunities that interactive properties and services bring into the textile and garment life cycle. We use traditional crafts as a source of inspiration for the

Molecular Weight and Structural Properties of Biodegradable PLA Synthesized with Different Catalysts by Direct Melt Polycondensation

Directory of Open Access Journals (Sweden)

Hyung Woo Lee

2015-09-01

Full Text Available Production of biodegradable polylactic acid (PLA from biomassbased lactic acid is widely studied for substituting petro-based plastics or polymers. This study investigated PLA production from commercial lactic acid in a batch reactor by applying a direct melt polycondensation method with two kinds of catalyst, γ-aluminium(III oxide (γ-Al2O3 or zinc oxide (ZnO, in reduced pressure. The molecular weight of the synthesized PLA was determined by capillary viscometry and its structural properties were analyzed by functional group analysis using FT-IR. The yields of polymer production with respect to the theoretical conversion were 47% for γ-Al2O3 and 35% for ZnO. However, the PLA from ZnO had a higher molecular weight (150,600 g/mol than that from γ-Al2O3 (81,400 g/mol. The IR spectra of the synthesized PLA from both catalysts using polycondensation show the same behavior of absorption peaks at wave numbers from 4,500 cm-1 to 500 cm-1, whereas the PLA produced by two other polymerization methods – polycondensation and ring opening polymerization –showed a significant difference in % transmittance intensity pattern as well as peak area absorption at a wave number of 3,500 cm-1 as –OH vibration peak and at 1,750 cm-1 as –C=O carbonyl vibrational peak.

Supporting Craft Sense in Early Education

Directory of Open Access Journals (Sweden)

Kalle Virta

2013-10-01

Full Text Available The research task was to describe and construct theoretical background for Craft Sense in early education. Craft Sense represents a learner’s skill for obtaining Sloyd (Craft, Design & Technology related knowledge, skills and understanding. The development of Craft Sense is based on producing artefacts and evaluating the production process. In this research, the concept of Craft Sense is based on the integration of Sloyd and meta-cognitive regulation of learning activities. Based on theoretical information, an empirical research question was formulated: “What kind of Craft Sense do children have in early education Sloyd?” The method of study was assessing picture supported learning on a Sloyd course for young children. The data was analyzed by qualitative content analysis and Child Behaviour Rating Scale (CBRS. Findings indicate that the development of children’s Craft Sense can be supported with pictures. Furthermore, the CBRS can be used to evaluate and understand children’s Craft Sense. Keywords: Craft Sense, Sloyd, Sloyd Education, Meta-cognition

Use of co2 for the synthesis of cyclic glycocarbonates and linear polyglycocarbonates by polycondensation from glycans

KAUST Repository

Gnanou, Yves

2016-10-20

Provided herein are methods for synthesizing cyclic carbonates, glycocarbonates, and polyglycocarbonates by reacting polyol glycans with carbon dioxide. Synthesis can include selective polycondensation of polyol glycan hydroxyl moieties.

Use of co2 for the synthesis of cyclic glycocarbonates and linear polyglycocarbonates by polycondensation from glycans

KAUST Repository

Gnanou, Yves; Pati, Debasis; Feng, Xiaoshuang; Hadjichristidis, Nikolaos

2016-01-01

Provided herein are methods for synthesizing cyclic carbonates, glycocarbonates, and polyglycocarbonates by reacting polyol glycans with carbon dioxide. Synthesis can include selective polycondensation of polyol glycan hydroxyl moieties.

Employees’ Perceived Opportunities to Craft and In-Role Performance: The Mediating Role of Job Crafting and Work Engagement

Science.gov (United States)

van Wingerden, Jessica; Poell, Rob F.

2017-01-01

The present study was designed to gain knowledge of the relationship between employees’ perceived opportunities to craft, their actual job crafting behavior and, in line with JD-R theory, subsequently their work engagement and performance. Although scholars have suggested that employees’ perceived opportunities to craft their job may predict their actual job crafting behavior, which may have consequences for their well-being and performance, no study has examined the relationships between these variables. We collected data among a heterogeneous group of Dutch employees (N = 2090). Participants of the study reported their perceived opportunities to craft, job crafting behavior, work engagement and performance. Results indicated that individuals who experience a high level of opportunities to craft reported higher levels of job crafting behavior. In turn, perceived opportunities to craft and job crafting behavior related to higher levels of work engagement and subsequently performance. We discuss the implications of these findings for theory and practice. PMID:29118729

Employees' Perceived Opportunities to Craft and In-Role Performance: The Mediating Role of Job Crafting and Work Engagement.

Science.gov (United States)

van Wingerden, Jessica; Poell, Rob F

2017-01-01

The present study was designed to gain knowledge of the relationship between employees' perceived opportunities to craft, their actual job crafting behavior and, in line with JD-R theory, subsequently their work engagement and performance. Although scholars have suggested that employees' perceived opportunities to craft their job may predict their actual job crafting behavior, which may have consequences for their well-being and performance, no study has examined the relationships between these variables. We collected data among a heterogeneous group of Dutch employees ( N = 2090). Participants of the study reported their perceived opportunities to craft, job crafting behavior, work engagement and performance. Results indicated that individuals who experience a high level of opportunities to craft reported higher levels of job crafting behavior. In turn, perceived opportunities to craft and job crafting behavior related to higher levels of work engagement and subsequently performance. We discuss the implications of these findings for theory and practice.

Development of Interactive Multimedia Courseware (e-CRAFT) for Craft Education

Science.gov (United States)

Osman, Salyani; Sahari, Noraidah; Zin, Nor Azan Mat

2012-01-01

The way of teaching and learning traditional crafts have always used traditional apprenticeship learning methods where the expert facilitates transfer of practice skill sets to novices. As a craft has been taught in conventional approach, the students and experts have been facing several problems especially when expert needs to teach a group of…

Photoresponsive Azopolyester–PMMA Block Copolymers Obtained by Combination of ATRP, Polycondensation, and “Click” Chemistry

DEFF Research Database (Denmark)

Berges, Cristina; Javakhishvili, Irakli; Hvilsted, Søren

2012-01-01

Novel azobenzene‐containing block copolymers (BCs) with a polyester block bearing azobenzene moieties in the side chain and a poly (methyl methacrylate) (PMMA) block have been synthesized by the combination of atom transfer radical polymerization (ATRP), polycondensation, and “click” chemistry. Two...

Polymeric molecular sieve membranes for gas separation

Science.gov (United States)

Dai, Sheng; Qiao, Zhenan; Chai, Songhai

2017-08-15

A porous polymer membrane useful in gas separation, the porous polymer membrane comprising a polymeric structure having crosslinked aromatic groups and a hierarchical porosity in which micropores having a pore size less than 2 nm are present at least in an outer layer of the porous polymer membrane, and macropores having a pore size of over 50 nm are present at least in an inner layer of the porous polymer membrane. Also described are methods for producing the porous polymer membrane in which a non-porous polymer membrane containing aromatic rings is subjected to a Friedel-Crafts crosslinking reaction in which a crosslinking molecule crosslinks the aromatic rings in the presence of a Friedel-Crafts catalyst and organic solvent under sufficiently elevated temperature, as well as methods for using the porous polymer membranes for gas or liquid separation, filtration, or purification.

Research 2009-2011 - Digital Crafting

DEFF Research Database (Denmark)

Ramsgaard Thomsen, Mette; Tamke, Martin; Peder Pedersen, Claus

2012-01-01

The publication reports on the international research network 'Digital Crafting' organised in the period 2009-2011. The research network investigated profound changes in the design and building of architecture. Developing the term Digital Crafting, the network examined how the maturing of interfa......The publication reports on the international research network 'Digital Crafting' organised in the period 2009-2011. The research network investigated profound changes in the design and building of architecture. Developing the term Digital Crafting, the network examined how the maturing...

Josiah Wedgwood, Manufacturing and Craft

DEFF Research Database (Denmark)

Holt, Robin; Popp, Andrew

2016-01-01

Craft and industrial manufacture are often seen as dichotomous, with craft being marginalized during the process of industrialization. We want to look beyond this position, searching for craft in places where it has gone unnoticed and where it might have bloomed anew in the interstices created...

Cross-Conjugated n-Dopable Aromatic Polyketone

NARCIS (Netherlands)

Voortman, Thomas P.; Bartesaghi, Davide; Koster, L. Jan Anton; Chiechi, Ryan C.

2015-01-01

This paper describes the synthesis and characterization of a high molecular weight cross-conjugated polyketone synthesized via scalable Friedel Crafts chemistry. Cross-conjugated polyketones are precursors to conjugated polyions; they become orders of magnitude more conductive after a two-electron

46 CFR 199.201 - Survival craft.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Survival craft. 199.201 Section 199.201 Shipping COAST... craft. (a) Each survival craft must be approved and equipped as follows: (1) Each lifeboat must be... addition to the survival craft required in paragraph (b)(1) of this section, additional liferafts must be...

Glassin, a histidine-rich protein from the siliceous skeletal system of the marine sponge Euplectella, directs silica polycondensation.

Science.gov (United States)

Shimizu, Katsuhiko; Amano, Taro; Bari, Md Rezaul; Weaver, James C; Arima, Jiro; Mori, Nobuhiro

2015-09-15

The hexactinellids are a diverse group of predominantly deep sea sponges that synthesize elaborate fibrous skeletal systems of amorphous hydrated silica. As a representative example, members of the genus Euplectella have proved to be useful model systems for investigating structure-function relationships in these hierarchically ordered siliceous network-like composites. Despite recent advances in understanding the mechanistic origins of damage tolerance in these complex skeletal systems, the details of their synthesis have remained largely unexplored. Here, we describe a previously unidentified protein, named "glassin," the main constituent in the water-soluble fraction of the demineralized skeletal elements of Euplectella. When combined with silicic acid solutions, glassin rapidly accelerates silica polycondensation over a pH range of 6-8. Glassin is characterized by high histidine content, and cDNA sequence analysis reveals that glassin shares no significant similarity with any other known proteins. The deduced amino acid sequence reveals that glassin consists of two similar histidine-rich domains and a connecting domain. Each of the histidine-rich domains is composed of three segments: an amino-terminal histidine and aspartic acid-rich sequence, a proline-rich sequence in the middle, and a histidine and threonine-rich sequence at the carboxyl terminus. Histidine always forms HX or HHX repeats, in which most of X positions are occupied by glycine, aspartic acid, or threonine. Recombinant glassin reproduces the silica precipitation activity observed in the native proteins. The highly modular composition of glassin, composed of imidazole, acidic, and hydroxyl residues, favors silica polycondensation and provides insights into the molecular mechanisms of skeletal formation in hexactinellid sponges.

46 CFR 117.200 - Survival craft-general.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Survival craft-general. 117.200 Section 117.200 Shipping... Number and Type of Survival Craft § 117.200 Survival craft—general. (a) Each survival craft required on a... craft they replace. (c) A summary of survival craft requirements is provided in Table 117.200(c). Table...

Synthesis and properties of heterocyclic type I photoinitiators

International Nuclear Information System (INIS)

Liska, R.; Knaus, S.; Wendrinsky, J.

1999-01-01

The synthesis and properties of a series of new heterocyclic hydroxyalkylphenone-analogous photoinitiators (PIs) is described. The PIs are obtained by reaction of aromatic organolithium compounds with nitriles or by Friedel-Craft's-acylation. Preliminary photocalorimetric tests and UV absorption data are included

Synthesis and Reactions of Acenaphthenequinones-Part-2. The Reactions of Acenaphthenequinones

Directory of Open Access Journals (Sweden)

Mahmoud Shoukry

2002-02-01

Full Text Available The reactions of acenaphthenequinone and its derivatives with different nucleophiles, organic and inorganic reagents are reviewed. This survey also covers their oxidation and reduction reactions, in addition to many known reactions such as Friedel Crafts, Diels-Alder, bromination and thiolation.

A Robust Electroactive n-Dopable Aromatic Polyketone

NARCIS (Netherlands)

Chiechi, Ryan C.; Sonmez, Gursel; Wudl, Fred

2005-01-01

A new n-dopable polyketone, poly[(5-(2,5-dihexyl-4-(thiophen-2-yl)phenyl)thiophen-2-yl)(4-ketophenyl)methanone] (PTK), is synthesized via Friedel-Crafts acylation. Though insulating in the neutral state, PTK becomes conductive upon electrochemical reduction. The stable, two-electron, fully

Hydroquinone and quinone-grafted porous carbons for highly selective CO2 capture from flue gases and natural gas upgrading

NARCIS (Netherlands)

Wang, J.; Krishna, R.; Yang, J.; Deng, S.

2015-01-01

Hydroquinone and quinone functional groups were grafted onto a hierarchical porous carbon framework via the Friedel-Crafts reaction to develop more efficient adsorbents for the selective capture and removal of carbon dioxide from flue gases and natural gas. The oxygen-doped porous carbons were

46 CFR 180.175 - Survival craft equipment.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Survival craft equipment. 180.175 Section 180.175... TONS) LIFESAVING EQUIPMENT AND ARRANGEMENTS Survival Craft Arrangements and Equipment § 180.175 Survival craft equipment. (a) General. Each item of survival craft equipment must be of good quality, and...

46 CFR 117.175 - Survival craft equipment.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Survival craft equipment. 117.175 Section 117.175... AND ARRANGEMENTS Survival Craft Arrangements and Equipment § 117.175 Survival craft equipment. (a) General. Each item of survival craft equipment must be of good quality, and efficient for the purpose it...

46 CFR 133.105 - Survival craft.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Survival craft. 133.105 Section 133.105 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) OFFSHORE SUPPLY VESSELS LIFESAVING SYSTEMS Requirements for All OSVs § 133.105 Survival craft. (a) Each survival craft must be approved and equipped as...

Self-crafting vegetable snacks

NARCIS (Netherlands)

Raghoebar, Sanne; Kleef, van Ellen; Vet, de Emely

2017-01-01

Purpose: The purpose of this paper is to test whether the IKEA-effect (Norton et al., 2012) – better liking for self-crafted products than for identical products crafted by others – can be exploited to increase liking and consumption of vegetable snacks in children. Design/methodology/approach: A

Meaningful work and work engagement : The mediating role of perceived opportunity to craft and job crafting behavior

NARCIS (Netherlands)

Van Wingerden, Jessica; van der Stoep, Joost; Poell, R.F.

2018-01-01

This study examines the impact of meaningful work on employees’ level of work engagement as mediated by perceived opportunities to craft and job crafting. Based on the literature on meaningful work and job crafting, we hypothesize that meaningful work has a positive relationship with an employee’s

Total Synthesis of Adunctin B.

Science.gov (United States)

Dethe, Dattatraya H; Dherange, Balu D

2018-03-16

Total synthesis of (±)-adunctin B, a natural product isolated from Piper aduncum (Piperaceae), has been achieved using two different strategies, in seven and three steps. The efficient approach features highly atom economical and diastereoselective Friedel-Crafts acylation, alkylation reaction and palladium catalyzed Wacker type oxidative cyclization.

Effect of dioxan and toluene as solvents on: Polycondensation leading to poly (2.5-furylene vinylene)s

International Nuclear Information System (INIS)

Al-Hariri, S. N.

2008-01-01

This paper describes the influence of two different solvents, on a synthetic route leading to linear poly (2.5-furylene vinylene)s PFV, which involves the polycondensation of 5-methyl furfural in a basic medium, and on the characterization of PFV. The replacement of benzene by dioxan gives a linear polymeric structure possessing a high degree of conjugation, a good degree of polymerization, a remarkable stability to storage under ordinary condition and a partial solubility in common solvents, especially methylene chloride. Casting films from solution polymer gives brittle material, without any mechanical strength. However, the product obtained by using the toluene differs from the expected polymer. The results indicate that the raising of the degree of polymerization was done by increasing the time of reaction and successively introducing the monomer. Monomer, and dimer are isolated and characterized from the sub-product (oligomer) of the reaction. (author)

Regularities of synthesis and mechanism of polycondensation of aromatic amines

International Nuclear Information System (INIS)

Matnishyan, Hagob

2002-01-01

Full text.Aniline polymers and its derivatives are widely used in modern electronics, electrical engineering and manufacturing of various appliances. They are used for production of electrical power sources, probes and sensors, composite materials absorbing high frequency radiations, anticorrosion coatings, nonlinear optical devices-such as lasers, cathode ray tubes, photodiodes etc. Such a wide usage of aromatic amine polymers brings up new demands to their structure and properties, which is dependent on conditions of synthesis and forming of the hard phase. The presented article describes regularities and mechanisms of oxidative polycondensation of aromatic amines. Several types of polymers have been synthesized by chemical and electrochemical oxidation of aniline and its chlor-, brom-, iodo-, nitro-, p-substituted derivatives; diphenylamine, benzidine and phenylenediamines in nonwater media. On the basis of kinetic and electrochemical studies and literature analysis we suggested a mechanism of polycondensation of aromatic amines. According to it, oxidation of amines starts with the electron transfer with cation-radical formation on the first stage, which stabilizes in acid environments due to complex formation with initial amine. Dimer formation and further growth of chain takes place upon another electron transfer from formed complex, which results in forming of macromolecules. We also suggested a scheme for obtaining of structures defect in media assisting in deprotonizing of cation radicals and formation of arylamine radical centers. Those processes lead to formation of azo- and diphenyl fragments in the main chain of the polymer and predetermine the possibility of chain disruption. We also considered reactions leading to formation of branched polymers and cyclic structures, such as phenazine in particular. The peculiarity of electrochemical process lies in regulation of concentration of active centres on the positive electrode surface

Three-dimensional grain mapping by x-ray diffraction contrast tomography and the use of Friedel pairs in diffraction data analysis

DEFF Research Database (Denmark)

Ludwig, W.; Reischig, P.; King, A.

2009-01-01

X-ray diffraction contrast tomography (DCT) is a technique for mapping grain shape and orientation in plastically undeformed polycrystals. In this paper, we describe a modified DCT data acquisition strategy which permits the incorporation of an innovative Friedel pair method for analyzing...

46 CFR 199.261 - Survival craft.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Survival craft. 199.261 Section 199.261 Shipping COAST... SYSTEMS FOR CERTAIN INSPECTED VESSELS Additional Requirements for Cargo Vessels § 199.261 Survival craft. (a) Each survival craft must be approved and equipped as follows: (1) Each lifeboat must be a totally...

46 CFR 28.120 - Survival craft.

Science.gov (United States)

2010-10-01

... 46 Shipping 1 2010-10-01 2010-10-01 false Survival craft. 28.120 Section 28.120 Shipping COAST... VESSELS Requirements for All Vessels § 28.120 Survival craft. (a) Except as provided in paragraphs (b) through (h) of this section and 28.305, each vessel must carry the survival craft specified in Table 28...

Two-craft Coulomb formation study about circular orbits and libration points

Science.gov (United States)

Inampudi, Ravi Kishore

This dissertation investigates the dynamics and control of a two-craft Coulomb formation in circular orbits and at libration points; it addresses relative equilibria, stability and optimal reconfigurations of such formations. The relative equilibria of a two-craft tether formation connected by line-of-sight elastic forces moving in circular orbits and at libration points are investigated. In circular Earth orbits and Earth-Moon libration points, the radial, along-track, and orbit normal great circle equilibria conditions are found. An example of modeling the tether force using Coulomb force is discussed. Furthermore, the non-great-circle equilibria conditions for a two-spacecraft tether structure in circular Earth orbit and at collinear libration points are developed. Then the linearized dynamics and stability analysis of a 2-craft Coulomb formation at Earth-Moon libration points are studied. For orbit-radial equilibrium, Coulomb forces control the relative distance between the two satellites. The gravity gradient torques on the formation due to the two planets help stabilize the formation. Similar analysis is performed for along-track and orbit-normal relative equilibrium configurations. Where necessary, the craft use a hybrid thrusting-electrostatic actuation system. The two-craft dynamics at the libration points provide a general framework with circular Earth orbit dynamics forming a special case. In the presence of differential solar drag perturbations, a Lyapunov feedback controller is designed to stabilize a radial equilibrium, two-craft Coulomb formation at collinear libration points. The second part of the thesis investigates optimal reconfigurations of two-craft Coulomb formations in circular Earth orbits by applying nonlinear optimal control techniques. The objective of these reconfigurations is to maneuver the two-craft formation between two charged equilibria configurations. The reconfiguration of spacecraft is posed as an optimization problem using the

46 CFR 117.150 - Survival craft embarkation arrangements.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Survival craft embarkation arrangements. 117.150 Section... EQUIPMENT AND ARRANGEMENTS Survival Craft Arrangements and Equipment § 117.150 Survival craft embarkation... apparatus when either— (1) The embarkation station for the survival craft is on a deck more than 4.5 meters...

In Search of Craft

Science.gov (United States)

Schwalbe, Michael

2010-01-01

In the spring of 2009, this author asked the director of North Carolina State's Crafts Center to help him find people who might be willing to participate in a project about skill. Bill Wallace, an occasional teacher at the Crafts Center, was one of the people recommended to him. Bill Wallace is a man who can look at a tree and instinctively know…

Brane Craft

Science.gov (United States)

Janson, Siegfried

2017-01-01

A Brane Craft is a membrane spacecraft with solar cells, command and control electronics, communications systems, antennas, propulsion systems, attitude and proximity sensors, and shape control actuators as thin film structures manufactured on 10 micron thick plastic sheets. This revolutionary spacecraft design can have a thickness of tens of microns with a surface area of square meters to maximize area-to-mass ratios for exceptionally low-mass spacecraft. Communications satellites, solar power satellites, solar electric propulsion stages, and solar sails can benefit from Brane Craft design. It also enables new missions that require low-mass spacecraft with exceptionally high delta-V. Active removal of orbital debris from Earth orbit is the target application for this study.

46 CFR 117.130 - Stowage of survival craft.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Stowage of survival craft. 117.130 Section 117.130... AND ARRANGEMENTS Survival Craft Arrangements and Equipment § 117.130 Stowage of survival craft. (a) Each survival craft must be: (1) Secured to the vessel by a painter with a float-free link permanently...

46 CFR 199.130 - Stowage of survival craft.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Stowage of survival craft. 199.130 Section 199.130... craft. (a) General. Each survival craft must be stowed— (1) As close to the accommodation and service spaces as possible; (2) So that neither the survival craft nor its stowage arrangements will interfere...

46 CFR 180.130 - Stowage of survival craft.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Stowage of survival craft. 180.130 Section 180.130... TONS) LIFESAVING EQUIPMENT AND ARRANGEMENTS Survival Craft Arrangements and Equipment § 180.130 Stowage of survival craft. (a) Each survival craft must be: (1) Secured to the vessel by a painter with a...

Fabrication of superhydrophobic wood surfaces via a solution-immersion process

Science.gov (United States)

Liu, Changyu; Wang, Shuliang; Shi, Junyou; Wang, Chengyu

2011-11-01

Superhydrophobic wood surfaces were fabricated from potassium methyl siliconate (PMS) through a convenient solution-immersion method. The reaction involves a hydrogen bond assembly and a polycondensation process. The silanol was formed by reacting PMS aqueous solution with CO2, which was assembled on the wood surface via hydrogen bonds with the wood surface -OH groups. The polymethylsilsesquioxane coating was obtained through the polycondensation reaction of the hydroxyl between wood and silanol. The morphology of products were characterized using a scanning electron microscope (SEM), the surface chemical composition was determined using energy dispersive X-ray analysis (EDXA), Fourier transform infrared spectroscopy (FT-IR), thermogravimetry (TGA) and contact angle measurement. Analytical results revealed that rough protuberances uniformly covered the wood surface, thus transforming the wood surface from hydrophilic to superhydrophobic. The water contact angle of the superhydrophobic wood surface was about 153° and a sliding angle was 4.6°.

A simple, effective, green method for regioselective 3-acylation of unprotected indoles

DEFF Research Database (Denmark)

Tran, Phuong Huong; Tran, Hai N.; Hansen, Poul Erik

2015-01-01

A fast and green method is developed for regioselective acylation of indoles in the 3-position without the need for protection of the NH position. The method is based on Friedel-Crafts acylation using acid anhydrides. The method has been optimized, and Y(OTf)3 in catalytic amounts is found...

46 CFR 133.130 - Stowage of survival craft.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Stowage of survival craft. 133.130 Section 133.130... SYSTEMS Requirements for All OSVs § 133.130 Stowage of survival craft. (a) General. Each survival craft must be stowed as follows: (1) Each survival craft must be as close to the accommodation and service...

Leading to Crafting: The Relation Between Leadership Perception and Nurses' Job Crafting.

Science.gov (United States)

Esteves, Tiago; Pereira Lopes, Miguel

2017-06-01

Whenever individuals adapt their jobs to make them closer of their personal preferences, they are performing job crafting. This study aims to investigate if the way nurses perceive their leaders' behaviors is related with job crafting development. To do so, a quantitative analysis was conducted among a group of 325 Portuguese nurses. Results indicate that the perception of an empowering leader was found to be strongly related with the increase of challenges in the work environment, and with the development of stronger relations with direct managers and co-workers, which are two job crafting dimensions. The perception of a directive leader was found to be positively related with the avoidance of performing hindering tasks. Strengthening relations with direct managers and co-workers was found to be particularly related to leadership perception. Theoretical and practical implications are discussed.

46 CFR 28.310 - Launching of survival craft.

Science.gov (United States)

2010-10-01

... 46 Shipping 1 2010-10-01 2010-10-01 false Launching of survival craft. 28.310 Section 28.310... Operate With More Than 16 Individuals on Board § 28.310 Launching of survival craft. A gate or other... each survival craft which weighs more than 110 pounds (489 Newtons), to allow the survival craft to be...

Comparative study of the various methods of preparation of silicate solution and its effect on the geopolymerization reaction

Directory of Open Access Journals (Sweden)

N. Essaidi

Full Text Available This paper is based on the characterization of synthesized geopolymer binders based on either powder or solution silicate, and the amount of water contained in synthesized binders is determined to evaluate their possibility to coat a brick. The structural evolution of the formed geopolymers was investigated using FTIR spectroscopy. The mechanical properties were evaluated using compression tests. The structural evolution ensured that the solutions prepared from silicate powder or liquid had different degrees of polymerization, which modified the polycondensation reaction of the mixture. Nevertheless, the use of aluminosilicate solutions based on powder or liquid display similar behavior in a polycondensation reaction. The obtained materials show good mechanical properties, and it is possible to deposit this binder on the brick depending on the water content. Keywords: Silicate powder, Bricks, Alkaline solution, Binders, Depolymerization, Metakaolin reactivity

The meanings of craft to an occupational therapist.

Science.gov (United States)

Harris, Emma

2008-06-01

Craft was the first therapeutic occupation of occupational therapy. Since the early days of the profession, the value of craft in practice is a topic that has been discussed with fluctuating interest. Recent discussions by occupational therapists have reinforced that although craft is relevant to occupational therapy, there are uncertainties about its place in contemporary practice. Presently, scholars have identified that occupation is both the center of human experience and the core of our profession. Therefore, this study aimed to begin to clarify the meaning of craft to practice today by gaining a deep understanding of the meanings that one occupational therapist attributes to craft. Using narrative inquiry, data were gathered through a conversation held between the research participant and myself. A reflexive journal was also kept to support this data gathering process. Narrative analysis enabled intimate engagement with the data and the emergence of themes and sub-themes. The findings, in the form of an interpretive story, suggest first, that craft-making has therapeutic value; second, that reasoning about the therapeutic use of craft is similar to reasoning about other therapeutic activities; and third, that personal experience with craft-making can influence the selection of craft as therapeutic media. From this study, further research into the impact personal and professional experiences can have on choice of therapeutic media and an analysis of the sociopolitical context of the meanings that occupational therapists attribute to craft-making is suggested.

33 CFR 401.58 - Pleasure craft scheduling.

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Pleasure craft scheduling. 401.58... OF TRANSPORTATION SEAWAY REGULATIONS AND RULES Regulations Seaway Navigation § 401.58 Pleasure craft scheduling. (a) The transit of pleasure craft shall be scheduled by the traffic controller or the officer in...

Improved synthesis with high yield and increased molecular weight of poly(alpha,beta-malic acid) by direct polycondensation.

Science.gov (United States)

Kajiyama, Tetsuto; Kobayashi, Hisatoshi; Taguchi, Tetsushi; Kataoka, Kazunori; Tanaka, Junzo

2004-01-01

The development of synthetic biodegradable polymers, such as poly(alpha-hydroxy acid), is particularly important for constructing medical devices, including scaffolds and sutures, and has attracted growing interest in the biomedical field. Here, we report a novel approach to preparing high molecular weight poly(malic acid) (HMW--PMA) as a biodegradable and bioabsorbable water-soluble polymer. We investigated in detail the reaction conditions for the simple direct polycondensation of l-malic acid, including the reaction times, temperatures, and catalysts. The molecular weight of synthesized alpha,beta-PMA is dependent on both the reaction temperature and time. The optimum reaction condition to obtain alpha,beta-PMA by direct polycondensation using tin(II) chloride as a catalyst was thus determined to be 110 degrees C for 45 h with a molecular weight of 5300. The method for alpha,beta-PMA synthesis established here will facilitate production of alpha,beta-PMA of various molecular weights, which may have a potential utility as biomaterials.

47 CFR 80.1095 - Survival craft equipment.

Science.gov (United States)

2010-10-01

... 47 Telecommunication 5 2010-10-01 2010-10-01 false Survival craft equipment. 80.1095 Section 80... for Ship Stations § 80.1095 Survival craft equipment. (a) At least three two-way VHF radiotelephone... they can be rapidly placed in any survival craft other than life rafts required by Regulation III/26.1...

Crafts and Craft Education as Expressions of Cultural Heritage: Individual Experiences and Collective Values among an International Group of Women University Students

Science.gov (United States)

Kokko, Sirpa; Dillon, Patrick

2011-01-01

This paper explores relationships between crafts, craft education and cultural heritage as reflected in the individual experiences and collective values of fifteen female university students of different nationalities. The students (all trainee teachers) were following a course in crafts and craft education as part of an International Study…

Non-Conventional Methodologies in the Synthesis of 1-Indanones

Directory of Open Access Journals (Sweden)

Manuela Oliverio

2014-04-01

Full Text Available 1-Indanones have been successfully prepared by means of three different non-conventional techniques, namely microwaves, high-intensity ultrasound and a Q-tube™ reactor. A library of differently substituted 1-indanones has been prepared via one-pot intramolecular Friedel-Crafts acylation and their efficiency and “greenness” have been compared.

46 CFR 180.200 - Survival craft-general.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Survival craft-general. 180.200 Section 180.200 Shipping...) LIFESAVING EQUIPMENT AND ARRANGEMENTS Number and Type of Survival Craft § 180.200 Survival craft—general. (a) Each survival craft required on a vessel by this part must meet one of the following: (1) For an...

46 CFR 28.130 - Survival craft equipment.

Science.gov (United States)

2010-10-01

... 46 Shipping 1 2010-10-01 2010-10-01 false Survival craft equipment. 28.130 Section 28.130 Shipping... INDUSTRY VESSELS Requirements for All Vessels § 28.130 Survival craft equipment. (a) General. Each item of survival craft equipment must be of good quality, effective for the purpose it is intended to serve, and...

Catalyst Influence on Undesired Side Reactions in the Polycondensation of Fully Bio-Based Polyester Itaconates

Directory of Open Access Journals (Sweden)

Ina Schoon

2017-12-01

Full Text Available Bio-based unsaturated polyester resins derived from itaconic acid can be an alternative to established resins of this type in the field of radical-curing resins. However, one of the challenges of these polyester itaconates is the somewhat more elaborate synthetic process, especially under polycondensation conditions used on an industrial scale. The α,β-unsaturated double bond of the itaconic acid is prone to side reactions that can lead to the gelation of the polyester resin under standard conditions. This is especially true when bio-based diols such as 1,3-propanediol or 1,4-butanediol are used to obtain resins that are 100% derived from renewable resources. It was observed in earlier studies that high amounts of these aliphatic diols in the polyester lead to low conversion and gelation of the resins. In this work, a catalytic study using different diols was performed in order to elucidate the reasons for this behavior. It was shown that the choice of catalyst has a crucial influence on the side reactions occurring during the polycondensation reactions. In addition, the side reactions taking place were identified and suppressed. These results will allow for the synthesis of polyester itaconates on a larger scale, setting the stage for their industrial application.

Fungal decay of traditional fishing craft

Digital Repository Service at National Institute of Oceanography (India)

Gupta, R.

The artisanal fishermen land major portion of fish caught in India, employing traditional fishing craft and methods. These craft are built of indigenous wood and undergo rapid biodeterioration causing great economic loss. Soft-rot fungi...

33 CFR 84.24 - High-speed craft.

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false High-speed craft. 84.24 Section... RULES ANNEX I: POSITIONING AND TECHNICAL DETAILS OF LIGHTS AND SHAPES § 84.24 High-speed craft. (a) The masthead light of high-speed craft with a length to breadth ratio of less than 3.0 may be placed at a...

Efficient Lewis Acid Ionic Liquid-Catalyzed Synthesis of the Key Intermediate of Coenzyme Q10 under Microwave Irradiation

Directory of Open Access Journals (Sweden)

Thomas Efferth

2010-12-01

Full Text Available An efficient synthesis of a valuable intermediate of coenzyme Q10 by microwave-assisted Lewis acidic ionic liquid (IL-catalyzed Friedel-Crafts alkylation is reported. The acidity of six [Etpy]BF4-based ionic liquids was characterized by means of the FT-IR technique using acetonitrile as a molecular probe. The catalytic activities of these ionic liquids were correlated with their Lewis acidity. With increasing Lewis acid strength of the ionic liquids, their catalytic activity in the Friedel-Crafts reaction increased, except for [Etpy]BF4-AlCl3. The effects of the reaction system, the molar fraction of Lewis acid in the Lewis acid ILs and heating techniques were also investigated. Among the six Lewis acid ionic liquids tested [Etpy]BF4-ZnCl2 showed the best catalytic activity, with a yield of 89% after a very short reaction time (150 seconds. This procedure has the advantages of higher efficiency, better reusability of ILs, energy conservation and eco-friendliness. The method has practical value for preparation of CoQ10 on an industrial scale.

46 CFR 180.150 - Survival craft embarkation arrangements.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Survival craft embarkation arrangements. 180.150 Section... (UNDER 100 GROSS TONS) LIFESAVING EQUIPMENT AND ARRANGEMENTS Survival Craft Arrangements and Equipment § 180.150 Survival craft embarkation arrangements. (a) A launching appliance approved under approval...

When Does Job Crafting Generalize To Home Crafting

DEFF Research Database (Denmark)

Demerouti, Evangelina; De Gieter, Sara; Haun, Verena

Purpose: Job crafting represents attempts to expand (seeking resources or challenges) or reduce (reducing demands) the scope of the job such that it fits better to one’s preferences. The spillover hypothesis suggests that individuals generalize behaviors at work also to the non-work domain...

Implementing digital crafting : developing

DEFF Research Database (Denmark)

Tamke, Martin; Ramsgaard Thomsen, Mette

2010 in the Danish Design Centre in Copenhagen. The exhibition presents 18 designers, architects and people from the crafts that have an innovative take on the future questions of sustainability, new materials and technology. Their products challenge traditional Danish Design and are yet interconnected...... in the countries traits and the way they design. Curated by the Danish Design Centre, The Danish Architectural Centre and the Danish Crafts Organisation groups of three from the different disciplines were identified in 6 scenarios with distinct expression....

46 CFR 185.518 - Inflatable survival craft placards.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Inflatable survival craft placards. 185.518 Section 185... 100 GROSS TONS) OPERATIONS Preparations for Emergencies § 185.518 Inflatable survival craft placards. (a) Every vessel equipped with an inflatable survival craft must have approved placards or other...

An improved approach to exchange non-rectangular departments in CRAFT algorithm

OpenAIRE

Esmaeili Aliabadi, Danial; Pourghannad, Behrooz

2012-01-01

In this Paper, an algorithm which improves CRAFT algorithm’s efficacy is developed. CRAFT is an algorithm widely used to solve facility layout problems. Our proposed method, named Plasma, can be used to improve CRAFT results. In this note, Plasma algorithm is tested in several sample problems. The comparison between Plasma and classic CRAFT and also Micro-CRAFT indicates that Plasma is successful in cost reduction in comparison with CRAFT and Micro-CRAFT.

Preparation of hydrophilic PVDF/PPTA blend membranes by in situ polycondensation and its application in the treatment of landfill leachate

International Nuclear Information System (INIS)

Li, Hongbin; Shi, Wenying; Zhang, Yufeng; Zhou, Rong; Zhang, Haixia

2015-01-01

Graphical abstract: - Highlights: • High modulus PPTA molecules were introduced into PVDF membrane matrix through in situ polycondensation. • Membrane surface hydrophilicity and mechanical strength were improved. • An enhanced antifouling property was obtained when blend membrane was applied in the MBR in the treatment of landfill leachate. • Blend membrane also showed a relatively high removal rate of chemical oxygen demand (COD) and chrom. - Abstract: High modulus poly(p-phenylene terephtalamide) (PPTA) reinforced composites are of great scientific interests. But the thermodynamic difference makes the polymer pairs incompatible and endows the composites with inferior physical-chemical properties. In this study, hydrophilic poly(vinylidene fluoride) (PVDF)/poly(p-phenylene terephtalamide) (PPTA) blend membrane with improved hydrophilicity and mechanical strength was prepared through in situ polycondensation of p-phenylene diamine (PPD) and terephthaloyl chloride (TPC) in PVDF solution and subsequent immersion precipitation phase inversion process. The effects of PPTA concentration in polymer dopes on membrane formation process, structure, morphology and performance were systematically investigated. The results showed that thermodynamically, PPTA acted as a demixing enhancer which accelerated the phase inversion process. Dynamically, liquid-liquid phase separation was still in control of membrane formation process especially in the later period, whereas the addition of PPTA mainly promoted the early emergence of the liquid-liquid demixing. The surface hydrophilicity, ant-fouling properties and mechanical strength were significantly improved when PPTA content was 17 wt%. When PPTA content increased to 26 wt%, membrane bursting pressure increased to nearly 0.6 MPa which was 1.5 times higher than that of PVDF membrane. The resultant PVDF/PPTA blend membrane exhibited an improved antifouling property than that of PVDF membrane when applied in the MBR in the

Preparation of hydrophilic PVDF/PPTA blend membranes by in situ polycondensation and its application in the treatment of landfill leachate

Energy Technology Data Exchange (ETDEWEB)

Li, Hongbin, E-mail: qinyu1105@126.com [School of Textiles Engineering, Henan Institute of Engineering, Zhengzhou, 450007 (China); Shi, Wenying [School of Textiles Engineering, Henan Institute of Engineering, Zhengzhou, 450007 (China); Zhang, Yufeng [State Key Laboratory of Hollow Fiber Membrane Materials and Processes, Tianjin Polytechnic University, Tianjin 300387 (China); Zhou, Rong; Zhang, Haixia [School of Textiles Engineering, Henan Institute of Engineering, Zhengzhou, 450007 (China)

2015-08-15

Graphical abstract: - Highlights: • High modulus PPTA molecules were introduced into PVDF membrane matrix through in situ polycondensation. • Membrane surface hydrophilicity and mechanical strength were improved. • An enhanced antifouling property was obtained when blend membrane was applied in the MBR in the treatment of landfill leachate. • Blend membrane also showed a relatively high removal rate of chemical oxygen demand (COD) and chrom. - Abstract: High modulus poly(p-phenylene terephtalamide) (PPTA) reinforced composites are of great scientific interests. But the thermodynamic difference makes the polymer pairs incompatible and endows the composites with inferior physical-chemical properties. In this study, hydrophilic poly(vinylidene fluoride) (PVDF)/poly(p-phenylene terephtalamide) (PPTA) blend membrane with improved hydrophilicity and mechanical strength was prepared through in situ polycondensation of p-phenylene diamine (PPD) and terephthaloyl chloride (TPC) in PVDF solution and subsequent immersion precipitation phase inversion process. The effects of PPTA concentration in polymer dopes on membrane formation process, structure, morphology and performance were systematically investigated. The results showed that thermodynamically, PPTA acted as a demixing enhancer which accelerated the phase inversion process. Dynamically, liquid-liquid phase separation was still in control of membrane formation process especially in the later period, whereas the addition of PPTA mainly promoted the early emergence of the liquid-liquid demixing. The surface hydrophilicity, ant-fouling properties and mechanical strength were significantly improved when PPTA content was 17 wt%. When PPTA content increased to 26 wt%, membrane bursting pressure increased to nearly 0.6 MPa which was 1.5 times higher than that of PVDF membrane. The resultant PVDF/PPTA blend membrane exhibited an improved antifouling property than that of PVDF membrane when applied in the MBR in the

47 CFR 97.215 - Telecommand of model craft.

Science.gov (United States)

2010-10-01

... 47 Telecommunication 5 2010-10-01 2010-10-01 false Telecommand of model craft. 97.215 Section 97... AMATEUR RADIO SERVICE Special Operations § 97.215 Telecommand of model craft. An amateur station transmitting signals to control a model craft may be operated as follows: (a) The station identification...

46 CFR 122.518 - Inflatable survival craft placards.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Inflatable survival craft placards. 122.518 Section 122... Preparations for Emergencies § 122.518 Inflatable survival craft placards. (a) Every vessel equipped with an inflatable survival craft must have approved placards or other cards containing instructions for launching...

46 CFR 108.530 - Stowage of survival craft.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Stowage of survival craft. 108.530 Section 108.530... AND EQUIPMENT Lifesaving Equipment § 108.530 Stowage of survival craft. (a) General. Each survival craft required to be served by a launching appliance or marine evacuation system must be stowed as...

46 CFR 28.125 - Stowage of survival craft.

Science.gov (United States)

2010-10-01

... 46 Shipping 1 2010-10-01 2010-10-01 false Stowage of survival craft. 28.125 Section 28.125... FISHING INDUSTRY VESSELS Requirements for All Vessels § 28.125 Stowage of survival craft. (a) Each..., inflatable buoyant apparatus, and any auxiliary craft used in their place, must be kept readily accessible...

To craft or not to craft : The relationships between regulatory focus, job crafting and work outcomes

NARCIS (Netherlands)

Brenninkmeijer, Veerle; Hekkert-Koning, Marleen

2015-01-01

Purpose – The purpose of this paper is to examine relationships between regulatory focus, job crafting, work engagement and perceived employability. Regulatory focus theory distinguishes between promotion-focused individuals, who strive for growth and development, and preventionfocussed individuals,

The craft of intensive care medicine.

Science.gov (United States)

Carmel, Simon

2013-06-01

The practice of medicine is often represented as a dualism: is medicine a 'science' or an 'art'? This dualism has been long-lasting, with evident appeal for the medical profession. It also appears to have been rhetorically powerful, for example in enabling clinicians to resist the encroachment of 'scientific' evidence-based medicine into core areas of medical work such as individual clinical judgement. In this article I want to make the case for a more valid conceptualisation of medical practice: that it is a 'craft' activity. The case I make is founded on a theoretical synthesis of the concept of craft, combined with an analysis of ethnographic observations of routine medical practice in intensive care. For this context the craft aspects of medical work can be seen in how biomedical and other types of knowledge are used in practice, the embodied skills and practical judgement of practitioners and the technological and material environment. These aspects are brought together in two conceptual dimensions for 'craft': first, the application of knowledge; second, interaction with the material world. Some practical and political implications of a 'craft' metaphor for medical practice are noted. © 2013 The Author. Sociology of Health & Illness © 2013 Foundation for the Sociology of Health & Illness/John Wiley & Sons Ltd.

46 CFR 28.805 - Launching of survival craft.

Science.gov (United States)

2010-10-01

... 46 Shipping 1 2010-10-01 2010-10-01 false Launching of survival craft. 28.805 Section 28.805... FISHING INDUSTRY VESSELS Aleutian Trade Act Vessels § 28.805 Launching of survival craft. In addition to the survival craft requirements in subpart B, each vessel must have a gate or other opening in the...

46 CFR 199.230 - Stowage of survival craft.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Stowage of survival craft. 199.230 Section 199.230... Stowage of survival craft. (a) To meet the requirements of § 199.130(b)(1), each lifeboat on a passenger... height of a survival craft must take into account the vessel's escape provisions, the vessel's size, and...

46 CFR 199.290 - Stowage of survival craft.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Stowage of survival craft. 199.290 Section 199.290... of survival craft. (a) To meet the requirements of § 199.130(b)(1), each lifeboat— (1) On a cargo... required under § 199.261(e), no stowage position or muster and embarkation station for a survival craft on...

46 CFR 108.540 - Survival craft muster and embarkation arrangements.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Survival craft muster and embarkation arrangements. 108... OFFSHORE DRILLING UNITS DESIGN AND EQUIPMENT Lifesaving Equipment § 108.540 Survival craft muster and... craft muster station and embarkation station for a survival craft which is boarded before it is launched...

Job Crafting, Employee Well-being, and Quality of Care.

Science.gov (United States)

Yepes-Baldó, Montserrat; Romeo, Marina; Westerberg, Kristina; Nordin, Maria

2018-01-01

The main objective is to study the effects of job crafting activities of elder care and nursing home employees on their perceived well-being and quality of care in two European countries, Spain and Sweden. The Job Crafting, the General Health, and the Quality of Care questionnaires were administered to 530 employees. Correlations and hierarchical regression analyses were performed. Results confirm the effects of job crafting on quality of care ( r = .291, p employees' well-being ( r = .201, p well-being in Spain and Sweden and with quality of care in Spain. On the contrary, in Sweden, the relationship between job crafting and well-being was not linear. Job crafting contributes significantly to employees' and residents' well-being. Management should promote job crafting to co-create meaningful and productive work. Cultural effects are proposed to explain the differences found.

Adsorption of 2,4,6-trinitrotoluene on carboxylated porous polystyrene microspheres

International Nuclear Information System (INIS)

Ye Zhengfang; Meng Qingqiang; Lu Shengtao

2012-01-01

Large-pore-size (150 nm) polystyrene (PSt) microspheres were carboxylated with phthalic anhydride (PA) through Friedel-Crafts acetylation to study the adsorption of 2,4,6-trinitrotoluene (TNT) on this material from aqueous solution. The scanning electron microscope (SEM) images and mercury porosimetry measurements (MPM) of the microspheres showed that the pore structure was unchanged during the reaction. High adsorption capacity (11.2 mg g -1 of suction-dried adsorbent) and adsorption rate (33.9 mg g -1 h -1 ) for TNT were observed during the study. As shown by the adsorption isotherm, the adsorption of TNT on PA-PSt can be described by the Freundlich adsorption equation, indicating heterogeneous adsorption process. On-column adsorption of TNT on PA-PSt and elution indicated that TNT can be completely removed from aqueous solution and condensed into acetone.

47 CFR 80.223 - Special requirements for survival craft stations.

Science.gov (United States)

2010-10-01

... 47 Telecommunication 5 2010-10-01 2010-10-01 false Special requirements for survival craft... requirements for survival craft stations. (a) Survival craft stations capable of transmitting on: (1) 2182 kHz... operate with A3E or A3N emission. (b) Survival craft stations must be able to receive the frequency and...

“Not a Vacation, But a Hardening Process”: The Self-Empowerment Work of Therapeutic Craft in Nova Scotia

Directory of Open Access Journals (Sweden)

Erin Morton

2014-10-01

Full Text Available This article will examine the development of a state-sponsored therapeutic craft regime in Nova Scotia in the early to mid-twentieth century. Built on the notion that postwar residents needed "work therapy - not a vacation, but a hardening process" (Black n.d. a: 3 - therapeutic craft emerged in Nova Scotia through a complex combination of the individualization of work habits, the desire to construct an antimodern regional identity around handwork, and the notion that both infirm patients and the province as a whole could be healed from economic stagnation through craft. Key to the success of Nova Scotia's therapeutic craft regime was occupational therapist Mary E. Black's career as director of the provincial government's Handicrafts and Home Industries Division from 1943 to 1955. Black's healthcare training led her to seek out therapeutic possibilities in everyday work activities, not to mention a therapeutic solution to what she called "the atti-tude of most Nova Scotians"[:] defeatism" (Black 1949: 46. Her ability to turn seemingly disparate things - such as Scandinavian design, the ordered work of occupational rehabilitation, and a phenomenological focus on what she called “in-dividualistic existence” (Black n.d. b: 2 - into a unified therapeutic solution demonstrates that the contemporary rise of therapeutic culture under the increased individualism of the neoliberal era has an established historical root in the postwar period that remains important to understand.

Employees’ perceived opportunities to craft and in-role performance : The mediating role of job crafting and work engagement

NARCIS (Netherlands)

Van Wingerden, Jessica; Poell, R.F.

2017-01-01

The present study was designed to gain knowledge of the relationship between employees' perceived opportunities to craft, their actual job crafting behavior and, in line with JD-R theory, subsequently their work engagement and performance. Although scholars have suggested that employees' perceived

Diverse orientations in craft education: Student teachers’ conceptions and perceptions

Directory of Open Access Journals (Sweden)

Tarja Kröger

2016-03-01

Full Text Available Craft education in Finland has been in a state of change. The concept of a holistic craft process was implemented in the National Core Curriculum in 2004 and the new Curriculum from 2014 strengthened it. Craft and holistic craft is not one unity but includes several orientations. This study aims to research student teachers’ conceptions and perceptions about diverse orientations and the necessity of craft education before they begin their studies in craft pedagogy. Given that the beliefs that student teachers bring to professional learning play a pivotal role in influencing what they can learn from teacher education, they are a subject worthy of investigation. The data consists of on‐line questionnaire answers by student teachers (N=113 at the University of Finland in teacher education in 2014. The on-line questionnaire was answered at the beginning of a basic course in textile craft education at an early stage of their teacher studies. Findings suggest that student teachers conceive of craft education primarily as model-oriented and skill-oriented rather than design-oriented and expression-oriented. Student teachers think that craft education is needed at school, but explanations are not very diverse. The findings of this study can be useful in the process of developing teacher education programmes.

Metal organic frameworks as heterogeneous catalysts for the production of fine chemicals

Czech Academy of Sciences Publication Activity Database

Dhakshinamoorthy, A.; Opanasenko, Maksym; Čejka, Jiří; Garcia, H.

2013-01-01

Roč. 3, č. 10 (2013), s. 2509-2540 ISSN 2044-4753 R&D Projects: GA ČR GBP106/12/G015 Grant - others:European Commission(XE) FP7/2007-2013, contract 228862 Institutional support: RVO:61388955 Keywords : FRIEDEL-CRAFTS ACYLATION * CALCIUM-CHANNEL BLOCKERS * LIQUID-PHASE OXIDATIONS Subject RIV: CF - Physical ; Theoretical Chemistry Impact factor: 4.760, year: 2013

46 CFR 108.525 - Survival craft number and arrangement.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Survival craft number and arrangement. 108.525 Section... UNITS DESIGN AND EQUIPMENT Lifesaving Equipment § 108.525 Survival craft number and arrangement. (a... arrangement of survival craft: (1) Lifeboats with an aggregate capacity to accommodate the total number of...

75 FR 50773 - Invocation of Sunken Military Craft Act

Science.gov (United States)

2010-08-17

... Military Craft Act AGENCY: Coast Guard, DHS. ACTION: Notice. SUMMARY: The Coast Guard is announcing that a C-130 aircraft which crashed off the coast of California is a sunken military craft. It is therefore... is announcing that the wreckage of CG 1705 is a sunken military craft, and is therefore protected...

29 CFR 1202.8 - Hearings on craft or class.

Science.gov (United States)

2010-07-01

... 29 Labor 4 2010-07-01 2010-07-01 false Hearings on craft or class. 1202.8 Section 1202.8 Labor... craft or class. In the event the contesting parties or organizations are unable to agree on the..., specifying the craft or class of employees eligible to participate in the designation of representatives. ...

Modelling job crafting behaviours: Implications for work engagement

OpenAIRE

Bakker, Arnold B.; Rodríguez-Muñoz, Alfredo; Sanz Vergel, Ana Isabel

2016-01-01

In this study among 206 employees (103 dyads), we followed the job demands–resources approach of job crafting to investigate whether proactively changing one’s work environment influences employee’s (actor’s) own and colleague s (partner’s) work engagement. Using social cognitive theory, we hypothesized that employees would imitate each other’s job crafting behaviours, and therefore influence each other’s work engagement. Results showed that the crafting of social and structural job resources...

46 CFR 117.204 - Survival craft-vessels operating on coastwise routes.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Survival craft-vessels operating on coastwise routes... PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Number and Type of Survival Craft § 117.204 Survival craft... allowed, the following survival craft requirements apply when not engaged in an overnight voyage: (1...

Salen- Zr(IV) complex grafted into amine-tagged MIL-101(Cr) as a robust multifunctional catalyst for biodiesel production and organic transformation reactions

Science.gov (United States)

Hassan, Hassan M. A.; Betiha, Mohamed A.; Mohamed, Shaimaa K.; El-Sharkawy, E. A.; Ahmed, Emad A.

2017-08-01

The synthesis of metal-organic frameworks (MOFs), porous coordination polymers with functional groups has received immense interest due to the functional groups can offer desirable properties and allow post-synthetic modification. Herein, for the first time, Zr(IV)-Sal Schiff base complex incorporated into amino-functionalized MIL-101(Cr) framework by salicylaldehyde condensing to amino group, and coordinating Zr(IV) ion have been successfully synthesized. The worthiness of the synthesized material as a catalyst has been examined for the esterification of oleic acid (free fatty acid) with methanol producing biodiesel (methyl oleate), Knoveonagel condensation reaction of aldehydes and Friedel-Crafts acylation of anisole. Our findings demonstrated that Salen-Zr(IV) grafted to framework of NH2-MIL-101(Cr) as a solid acid catalyst exhibited distinct catalytic performance for the production of biodiesel by esterification of oleic acid with methanol, Knoveonagel condensation and Friedel-Crafts acylation. These could be attributed to high surface area which allow high distribution of Zr(IV) species lead to a sufficient contact with the reactants species. Furthermore, the catalyst showed excellent recycling efficiency due to the strong interaction between the Zr(IV) ions and chelating groups in the NH2-MIL-101(Cr)-Sal.

Interfacial Polycondensation Synthesis of Optically Sensitive Polyurea Microcapsule

Directory of Open Access Journals (Sweden)

Weidong Lai

2014-01-01

Full Text Available TMPTA prepolymer resin and photoinitiators of ITX/TPO had been encapsulated in core-shell structured microcapsules as optical responding ingredients based on interfacial polycondensation method, and polyurea structured microcapsule shell had been formed on the sheared O/W interface. The synthesized microcapsule had regular core-shell structure with the diameter of about 0.455 μm and shell thickness of about 40 nm. UV-visible absorption spectra indicated that the encapsulated ITX and TPO photoinitiators could efficiently absorb UV irradiation. Under exposure, the C=C bonds absorbance of the microencapsulated TMPTA decreased rapidly and then nearly unchanged during further exposure after 30 s. This implied that the optical response was achieved by C=C bond cleavage of TMPTA monomer initiated by the photoinitiator radicals, to form network polymers in microcapsules. The relative crosslinking rate was about 50%. Due to core polymer formation, the thermal phase change temperature of exposed microcapsules was narrowed and ranged from 105 to 205°C, compared with that from 125 to 260°C of unexposed microcapsules. Furthermore, the image density decrease at longer irradiation time had also verified the optical responding function of the synthesized microcapsules in macroscopic viewpoint.

Synthesis and characterization of poly(ester amide from remewable resources through melt polycondensation

Directory of Open Access Journals (Sweden)

B. B. Wang

2014-01-01

Full Text Available Biodegradable poly(ester amides (PEAs were synthesized from lactic acid and 11-aminoundecanoic acid via melt polycondensation. Molecular weights, chemical structures and thermal properties of the poly(ester amides were characterized in terms of gel permeation chromatography (GPC, Fourier transform infrared spectroscopy (FTIR, 1H nuclear magnetic resonance (1H NMR, differential scanning calorimetry (DSC and thermogravimetric analysis (TGA, respectively. The PEAs have low molecular weights and display a lower cold crystallization temperature as well as smaller crystallinity by comparison with the pure poly(lactic acid (PLA. The incorporation of the 11-aminoundecanoic acid into the PLA chain not only improved the thermal stability but changed the decomposition process.

32 CFR 700.872 - Ships and craft in drydock.

Science.gov (United States)

2010-07-01

... 32 National Defense 5 2010-07-01 2010-07-01 false Ships and craft in drydock. 700.872 Section 700... Special Circumstances/ships in Naval Stations and Shipyards § 700.872 Ships and craft in drydock. (a) The... ship or craft, not in commission, is in a naval drydock, the provisions of this article shall apply...

CRAFT

DEFF Research Database (Denmark)

Gammelgaard Nielsen, Anders

2012-01-01

At the Aarhus School of Architecture, Associate Professor Anders Gammelgaard has erected a solid wood construction, based on traditional craftsmanship. The entire structure is made of heavy oak timber that is joined together using the old techniques of tongue and groove and dowels. The motivation......-air museums, as a performing art in front of an audience. In this article the author discusses the importance of craft and craftsmanship in contemporary architecture in relation to its users....

Space Craft

Science.gov (United States)

Demski, Jennifer

2009-01-01

This article discusses how craft innovative architecture is bringing form to the function of 21st-century learning. It describes the construction of New Tech High at Coppell, in Coppell, Texas, which produces an example of how workplace design principles can be coordinated with modern educational goals. The campus was built on the model of New…

The Use of Shock Isolation mounts in Small High-Speed Craft to Protect Equipment from Wave Slam Effects

Science.gov (United States)

2017-07-01

hardware, but caution is advised because effective solutions will likely only be achieved by experienced shock isolation designers who pursue unique...provide tractable isolation solutions for craft, but caution is advised because effective solutions will likely only be achieved by experienced...very short duration of local vibration oscillations (e.g., nominal 25 to 50 msec or less) rather than rigid body shock pulse durations (e.g., 100

Self-crafting vegetable snacks: testing the IKEA-effect in children.

Science.gov (United States)

Raghoebar, Sanne; van Kleef, Ellen; de Vet, Emely

2017-01-01

The purpose of this paper is to test whether the IKEA-effect (Norton et al. , 2012) - better liking for self-crafted products than for identical products crafted by others - can be exploited to increase liking and consumption of vegetable snacks in children. A between-subjects experiment was conducted at an after school care facility. In total, 86 children aged four to six either crafted a peacock with vegetables or with non-food objects following an example. After the task, children ate snack vegetables ad libitum, and rated their liking for the vegetables and pride in crafting the peacock. No significant main effect of the vegetable snack creation on consumption and liking was observed. Also, perceived pride did not mediate the effect of self-crafting vegetable snacks on consumption of and liking for vegetables. Vegetable consumption did not differ between children who were either simply exposed to vegetable snacks while crafting or those who were crafting the vegetable snacks themselves. The equal consumption might suggest that this is caused by simple exposure, but more research is needed comparing self-crafting and exposure to a condition where there is no initial exposure to vegetables. Although the IKEA-effect has been demonstrated in adults, this is one of the first studies evaluating the IKEA-effect in children and as a means to increase liking for a generally disliked product in this target group, i.e. vegetables. The IKEA-effect could not be replicated under these more stringent conditions, where the experimental set-up enabled disentangling exposure and crafting effects.

An Efficient, Mild and Solvent-Free Synthesis of Benzene Ring Acylated Harmalines

Directory of Open Access Journals (Sweden)

Sabira Begum

2009-12-01

Full Text Available A facile synthesis of a series of benzene ring acylated analogues of harmaline has been achieved by Friedel-Crafts acylation under solvent-free conditions at room temperature using acyl halides/acid anhydrides and AlCl3. The reaction afforded 10- and 12-acyl analogues of harmaline in good yield, along with minor quantities of N-acyl-tryptamines and 8-acyl analogues of N-acyltryptamines.

Constructing knowledge through perceptual processes in making craft-art

Directory of Open Access Journals (Sweden)

Milla Ojala

2013-10-01

Full Text Available The focus of the study is on the knowledge that is constructed through perceptual processes during craft making in the context of the Finnish Basic Education in the Arts (BEA system. Craft studies in the BEA are defined as craft-art. The research method used is the grounded theory. The data consists of seven interviews and participant observations. Participants in the study are adolescents who study craft-art in the BEA system in Visual Art School, Aimo in Hämeenlinna. The aim of the article is to present, define and reflect on the concepts, properties and dimensions concerning perceptual processes that are discovered in this stage of the study following grounded theory procedures. The perceptual processes are an essential means of constructing knowledge in craft-art. Consequently, one aim of the study is to discuss how these processes are connected to various types of knowledge. The perceptual processes are described by seven concepts: imitative, anticipative, evaluative, experimental, emotional, temporal and bodily perceptions. They indicate on a conceptual level the characteristic of knowledge constructed through perceptual processes in craft-art. Further, theconcepts have several properties that can vary dimensionally between two qualities. The properties are activity, function and position. The dimensions of the properties vary from active to passive, formal to informal and internal to external. In conclusion, the concepts can describe a large range of incidents in different situations. They also seem to describe well the practice of  craft-art and there are several connections with pre-existing concepts of knowledge.Keywords: Craft, Knowledge, Perceptual process, Basic Education in the Arts, Grounded Theory 

46 CFR 133.110 - Survival craft muster and embarkation arrangements.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Survival craft muster and embarkation arrangements. 133... VESSELS LIFESAVING SYSTEMS Requirements for All OSVs § 133.110 Survival craft muster and embarkation... lighting supplied from the emergency source of electrical power. (e) Each davit-launched survival craft...

46 CFR 199.110 - Survival craft muster and embarkation arrangements.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Survival craft muster and embarkation arrangements. 199... § 199.110 Survival craft muster and embarkation arrangements. (a) Each muster station must have... emergency source of electrical power. (e) Each davit-launched and free-fall survival craft muster station...

46 CFR 199.245 - Survival craft embarkation and launching arrangements.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Survival craft embarkation and launching arrangements... Passenger Vessels § 199.245 Survival craft embarkation and launching arrangements. (a) Each davit-launched liferaft must be arranged to be rapidly boarded by its full complement of persons. (b) All survival craft...

46 CFR 199.280 - Survival craft embarkation and launching arrangements.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Survival craft embarkation and launching arrangements... Cargo Vessels § 199.280 Survival craft embarkation and launching arrangements. (a) Each lifeboat must be.... (d) All survival craft required for abandonment by the total number of persons on board must be...

46 CFR 199.175 - Survival craft and rescue boat equipment.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Survival craft and rescue boat equipment. 199.175....175 Survival craft and rescue boat equipment. (a) All lifeboat and rescue boat equipment— (1) Must be... craft or rescue boat; or (iii) Overload the launching appliance. (b) Each lifeboat, rigid liferaft, and...

46 CFR 199.100 - Manning of survival craft and supervision.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Manning of survival craft and supervision. 199.100....100 Manning of survival craft and supervision. (a) There must be a sufficient number of trained... craft and launching arrangements required for abandonment by the total number of persons on board. (c...

Job crafting: Towards a new model of individual job redesign

Directory of Open Access Journals (Sweden)

Maria Tims

2010-12-01

Research purpose: The purpose of the study was to fit job crafting in job design theory. Motivation for the study: The study was an attempt to shed more light on the types of proactive behaviours of individual employees at work. Moreover, we explored the concept of job crafting and its antecedents and consequences. Research design, approach and method: A literature study was conducted in which the focus was first on proactive behaviour of the employee and then on job crafting. Main findings: Job crafting can be seen as a specific form of proactive behaviour in which the employee initiates changes in the level of job demands and job resources. Job crafting may be facilitated by job and individual characteristics and may enable employees to fit their jobs to their personal knowledge, skills and abilities on the one hand and to their preferences and needs on the other hand. Practical/managerial implications: Job crafting may be a good way for employees to improve their work motivation and other positive work outcomes. Employees could be encouraged to exert more influence on their job characteristics. Contribution/value-add: This article describes a relatively new perspective on active job redesign by the individual, called job crafting, which has important implications for job design theories.

46 CFR 109.323 - Manning of survival craft and supervision.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Manning of survival craft and supervision. 109.323... DRILLING UNITS OPERATIONS Operation and Stowage of Safety Equipment § 109.323 Manning of survival craft and supervision. (a) There must be a sufficient number of trained persons on board the survival craft for...

New Flame-Retardant Poly(ester-imide)s Containing Phosphine Oxide Moieties in the Main Chain: Synthesis and Properties

OpenAIRE

FAGHIHI, Khalil

2014-01-01

Six new flame-retardant poly(ester-imide)s (9a-f) with high inherent viscosity and containing phosphine oxide moieties in the main chain were synthesized from the polycondensation reaction of N,N-(3,3-diphenylphenyl phosphine oxide) bistrimellitimide diacid chloride (7) with 6 aromatic diols (8a-f) by 2 different methods:--solution and microwave-assisted polycondensation. The results showed that compared to solution polycondensation, the microwave-assisted polycondensation reaction us...

46 CFR 111.75-16 - Lighting of survival craft and rescue boats.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Lighting of survival craft and rescue boats. 111.75-16... craft and rescue boats. (a) During preparation, launching, and recovery, each survival craft and rescue... of circuits must be such that the lighting for adjacent launching stations for survival craft or...

46 CFR 117.206 - Survival craft-vessels operating on Great Lakes routes.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Survival craft-vessels operating on Great Lakes routes... PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Number and Type of Survival Craft § 117.206 Survival craft... vessel certificated to operate on a Great Lakes route must be provided with the survival craft required...

33 CFR 149.313 - How must survival craft be arranged?

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false How must survival craft be... Equipment Manned Deepwater Port Requirements § 149.313 How must survival craft be arranged? The operator must arrange survival craft so that they meet the requirements of 46 CFR 108.525 (a) and § 108.530 and...

46 CFR 117.205 - Survival craft-vessels operating on limited coastwise routes.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Survival craft-vessels operating on limited coastwise... PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Number and Type of Survival Craft § 117.205 Survival craft... the survival craft required by §§ 117.204 (a) through (d) of this part, as applicable. (b) Each vessel...

Modern electrical installation for craft students

CERN Document Server

Scaddan, Brian

2013-01-01

Modern Electrical Installation for Craft Students, Volume 2, Third Edition discusses several topics concerning electrical installations. The book is comprised of eight chapters that deal with craft theory, associated subjects, and electrical industries. Chapter 1 covers inductors and inductance, while Chapter 2 tackles capacitors and capacitance. Chapter 3 deals with inductance and capacitance in installation work. The book also discusses cells, batteries, and transformers. The electrical industries, control and earthing, and testing are also dealt with. The last chapter discusses the basic el

Reactions of adducts of phosphorus pentachloride and 1-alkenes with arsenic trifluoride

International Nuclear Information System (INIS)

Fridland, S.V.; Miftakhov, M.N.; Dmitrieva, N.V.

1986-01-01

As a result of NMR investigations of models of σ and π nu complexes of 1-heptene (or 1-hexene) and phosphorus pentachloride in reactions with arsenic trifluoride it was shown that the formation of the phosphorus-containing arylated product by the Friedel-Crafts scheme is possible only with the participation of the σ complex, but in the case of the π nu complex the arylation of the olefin occurs

A new hypercrosslinked supermicroporous polymer, with scope for sulfonation, and its catalytic potential for the efficient synthesis of biodiesel at room temperature.

Science.gov (United States)

Bhunia, Subhajit; Banerjee, Biplab; Bhaumik, Asim

2015-03-25

We have designed a new hypercrosslinked supermicroporous polymer (HMP-1) with a BET surface area of 913 m(2) g(-1) by FeCl3 via a catalyzed Friedel-Crafts alkylation reaction between carbazole and α,α'-dibromo-p-xylene. Upon sulfonation HMP-1 yielded a very efficient solid acid catalyst for the production of biodiesels via esterification/transesterification of free fatty acids (FFA)/esters at room temperature.

Monodisperse microbeads of hypercrosslinked polystyrene for liquid and supercritical fluid chromatography

Science.gov (United States)

Tsyurupa, M. P.; Blinnikova, Z. K.; Il'in, M. M.; Davankov, V. A.; Parenago, O. O.; Pokrovskii, O. I.; Usovich, O. I.

2015-11-01

Monodisperse styrene-divinylbenzene (1 wt %) copolymer microbeads are obtained via the elaborate method of high-productivity precipitation polymerization. The crosslinking of this copolymer with chloromethyl methyl ether in the presence of Friedel-Crafts catalyst yields porous hypercrosslinked polymers with degrees of crosslinking that range from 200 to 500%. Microbead sorbents are shown to be suited for selective stationary phases for high-performance liquid chromatography and supercritical fluid chromatography.

46 CFR 199.220 - Survival craft and rescue boat embarkation arrangements.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Survival craft and rescue boat embarkation arrangements... APPLIANCES AND ARRANGEMENTS LIFESAVING SYSTEMS FOR CERTAIN INSPECTED VESSELS Additional Requirements for Passenger Vessels § 199.220 Survival craft and rescue boat embarkation arrangements. (a) Survival craft...

Minimum Plate Thickness in High-Speed Craft

DEFF Research Database (Denmark)

Pedersen, Preben Terndrup; Zhang, Shengming

1998-01-01

The minimum plate thickness requirements specified by the classification societies for high-speed craft are supposed to ensure adequate resistance to impact loads such as collision with floating objects and objects falling on the deck. The paper presents analytical methods of describing such impact...... phenomena and proposes performance requirements instead of thickness requirements for hull panels in high-speed craft made of different building materials....

46 CFR 108.550 - Survival craft launching and recovery arrangements: General.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Survival craft launching and recovery arrangements...-MOBILE OFFSHORE DRILLING UNITS DESIGN AND EQUIPMENT Lifesaving Equipment § 108.550 Survival craft.... (c) Each survival craft must be arranged to clear each leg, column, footing, brace, mat, and each...

46 CFR 199.150 - Survival craft launching and recovery arrangements; general.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Survival craft launching and recovery arrangements... Vessels § 199.150 Survival craft launching and recovery arrangements; general. (a)(1) Each launching...) Unless expressly provided otherwise in this part, each survival craft must be provided with a launching...

46 CFR 133.150 - Survival craft launching and recovery arrangements: General.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Survival craft launching and recovery arrangements...) OFFSHORE SUPPLY VESSELS LIFESAVING SYSTEMS Requirements for All OSVs § 133.150 Survival craft launching and recovery arrangements: General. (a) All survival craft required for abandonment by the total number of...

33 CFR 146.120 - Manning of survival craft.

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Manning of survival craft. 146.120 Section 146.120 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY... craft. The owner, the owner's agent, or the person in charge shall assign a person to each life float...

46 CFR 117.202 - Survival craft-vessels operating on oceans routes.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Survival craft-vessels operating on oceans routes. 117... LIFESAVING EQUIPMENT AND ARRANGEMENTS Number and Type of Survival Craft § 117.202 Survival craft—vessels... number of overnight persons allowed, the survival craft requirements contained in paragraph (e) of this...

Craft vs. industrial: Habits, attitudes and motivations towards beer consumption in Mexico.

Science.gov (United States)

Gómez-Corona, Carlos; Escalona-Buendía, Héctor B; García, Mauricio; Chollet, Sylvie; Valentin, Dominique

2016-01-01

Food choices tend to be stable over time; they do not change fast, since consumers tend to act like creatures of habits. However, food habits can evolve, like currently the craft beer category. A change of habits involves a change of perception towards a product. Therefore, what is changing in the perception of beer? Two studies were conducted to address this question. First study was preliminary and aimed at exploring beer consumption habits in Mexico and a better understanding of craft beer representation among beer users. A questionnaire was administrated to 207 consumers in Mexico City during a beer festival. Results showed that respondents could be classified in: industrial beer (41.1%), occasional industrial (24.1%), and craft beer (34.8%) consumers. Craft cluster included mostly 25-35 years old men with high-income level. Among the craft beers cited by respondents from this cluster some are industrial, suggesting that the concept of craft beer might not be well defined, or defined in ideological terms. The second and main study was conducted using consumer ethnographies to understand the motivations and benefits of craft beer consumption. Opposite to industrial, craft beer emerges as an experience-based and symbolic product rather than a utilitarian one. The main motivation for drinking craft beer seems to be the quest of authenticity. Respondents' motivations to drink craft beer are generated by three important factors: desire for more knowledge, new taste experiences, and move away from the mainstream beer consumption. Craft consumers do not drink the product for its functional attributes, they consume it for what it means and as a consequence they build an identity, perceived as more authentic and unique, in comparison to the mainstream industrial beer consumption in Mexico. Copyright © 2015 Elsevier Ltd. All rights reserved.

46 CFR 108.520 - Type of survival craft.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Type of survival craft. 108.520 Section 108.520 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) A-MOBILE OFFSHORE DRILLING UNITS DESIGN AND EQUIPMENT Lifesaving Equipment § 108.520 Type of survival craft. (a) Each lifeboat must be a fire-protected...

The comparative risk assessment framework and tools (CRAFT)

Science.gov (United States)

Southern Research Station. USDA Forest Service

2010-01-01

To help address these challenges, the USDA Forest Service’s Eastern Forest Environmental Threat Assessment Center (EFETAC) and the University of North Carolina Asheville’s National Environmental Modeling and Analysis Center (NEMAC) designed a planning framework, called the Comparative Risk Assessment Framework and Tools (CRAFT). CRAFT is...

Empowering leadership and job crafting: The role of employee optimism.

Science.gov (United States)

Thun, Sylvi; Bakker, Arnold B

2018-06-08

The objective of this study was to test the relationship between empowering leadership and job crafting and to examine the moderating role of optimism as a personal resource. We hypothesized that the association between empowering leadership and job crafting would be stronger for employees with high (vs. low) levels of optimism. A total of 331 Norwegian workers from a variety of occupations participated in our study. Results of structural equation modelling analysis generally supported our hypotheses. Empowering leadership was positively related to 3 of the 4 job crafting strategies investigated (increasing structural job resources, increasing social job resources, and increasing challenging job demands; but not reducing hindrance job demands). Moreover, as hypothesized, optimism strengthened the empowering leadership-job crafting relationship for increasing structural resources and increasing challenging demands. The results suggest that empowering leadership is an important antecedent of job crafting strategies, except for reducing hindrance demands. The implications of these findings are discussed. Copyright © 2018 John Wiley & Sons, Ltd.

The synthesis of [U-{sup 14}C phenyl] LS 840606, an agricultural fungicide

Energy Technology Data Exchange (ETDEWEB)

Madegard, G.; Mestre, P.; Raimond, P.; Noel, J.-P. [CEA Centre d`Etudes de Saclay, 91 - Gif-sur-Yvette (France)

1995-12-01

2,2`,4`-Trichloro-[ring U-{sup 14}C]acetophenone was the key intermediate of this synthesis patterned after the industrial route. An unexpected poor yield was observed during the preparation by the Friedel-Crafts reaction of chloroacetyl chloride with 1,3-dichloro-[U-{sup 14}C]benzene, possibly the result of an isotope effect although this poor yield might be explained by other factors. Two routes were checked for the preparation of 1,3-dichloro-[U-{sup 14} C]benzene. The action of CCl{sub 4} with 1,3-dinitro-[U-{sup 14} C]benzene at 280{sup o}C was entailed with explosions. A safer route started from [U-{sup 14}C]aniline via 2,4-dichloro-[ring U-{sup 14}C]acetanilide. Friedel-Crafts reaction with acetyl chloride gave rise in 52% yield to 2`,4`-dichloro-[ring U-{sup 14}C]acetophenone which was brominated to 2-bromo-2`,4`-dichloro-[ring U-{sup 14}C]acetophenone; was condensed with 2,2-(ethylenedioxy)etylmagnesium bromide to compound, was condensed with 1,2,4-triazole then successively treated with HCl:water:dioxane and 2,2,2-trifluoroethanol/HCl. Separation of the two diastereomers by medium pressure liquid chromatography. 7% overall radioactivity yield from [U-{sup 14}C]aniline. Radiochemical purity 99%. (author).

The synthesis of [U-14C phenyl] LS 840606, an agricultural fungicide

International Nuclear Information System (INIS)

Madegard, G.; Mestre, P.; Raimond, P.; Noel, J.-P.

1995-01-01

2,2',4'-Trichloro-[ring U- 14 C]acetophenone was the key intermediate of this synthesis patterned after the industrial route. An unexpected poor yield was observed during the preparation by the Friedel-Crafts reaction of chloroacetyl chloride with 1,3-dichloro-[U- 14 C]benzene, possibly the result of an isotope effect although this poor yield might be explained by other factors. Two routes were checked for the preparation of 1,3-dichloro-[U- 14 C]benzene. The action of CCl 4 with 1,3-dinitro-[U- 14 C]benzene at 280 o C was entailed with explosions. A safer route started from [U- 14 C]aniline via 2,4-dichloro-[ring U- 14 C]acetanilide. Friedel-Crafts reaction with acetyl chloride gave rise in 52% yield to 2',4'-dichloro-[ring U- 14 C]acetophenone which was brominated to 2-bromo-2',4'-dichloro-[ring U- 14 C]acetophenone; was condensed with 2,2-ethylenedioxy)etylmagnesium bromide to compound, was condensed with 1,2,4-triazole then successively treated with HCl:water:dioxane and 2,2,2-trifluoroethanol/HCl. Separation of the two diastereomers by medium pressure liquid chromatography. 7% overall radioactivity yield from [U- 14 C]aniline. Radiochemical purity 99%. (author)

46 CFR 117.208 - Survival craft-vessels operating on rivers routes.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Survival craft-vessels operating on rivers routes. 117... LIFESAVING EQUIPMENT AND ARRANGEMENTS Number and Type of Survival Craft § 117.208 Survival craft—vessels... vessel certificated to operate on a rivers route in warm water is not required to carry survival craft...

47 CFR 80.271 - Technical requirements for portable survival craft radiotelephone transceivers.

Science.gov (United States)

2010-10-01

... craft radiotelephone transceivers. 80.271 Section 80.271 Telecommunication FEDERAL COMMUNICATIONS... Authorization for Compulsory Ships § 80.271 Technical requirements for portable survival craft radiotelephone transceivers. (a) Portable survival craft radiotelephone transceivers must comply with the following: (1) The...

Craft Lessons: Teaching Writing K-8. Second Edition

Science.gov (United States)

Fletcher, Ralph; Portalupi, JoAnn

2007-01-01

Since its publication in 1998 Craft Lessons has become a mainstay of writing teachers, both new and experienced. Practical lessons--each printed on one page--and the instructional language geared to three grade-level groupings: K-2, 3-4, and 5-8 are contained in this book. In the decade since Craft Lessons' publication the world has changed in…

Formation control of marine surface craft: a Lagrangian approach

DEFF Research Database (Denmark)

Ihle, Ivar-Andre F.; Jouffroy, Jerome; Fossen, Thor I.

2006-01-01

This paper presents a method for formation control of marine surface craft inspired by Lagrangian mechanics. The desired formation configuration and response of the marine surface craft are given as a set of constraints in analytical mechanics. Thus, constraints forces arise and feedback from...

Legal and economic implications of the German Craft Code Amendment 2004

Directory of Open Access Journals (Sweden)

Wolfgang Benzel

2012-01-01

Full Text Available As the main reason for initiating an amendment of the Trade and Crafts Code in 2004 was the decrease in the number of companies in general and the number of skilled crafts enterprises in particular and was also due to the fact that the number of employees in the skilled crafts sector had constantly fallen and many companies were not able to find a successor, it was the declared aim of the amendment to counter this structural crisis as well as reducing illegal employment and removing native discrimination. This would then ensure a higher level of employment especially through new company formations and takeovers of existing companies.In addition to providing an important contribution towards the assessment of the basic success of the 2004 Trade and Crafts Code amendment, the results can therefore be used at an international level for discussions on skilled crafts legislation outside Germany. As German skilled crafts legislation developed in a completely different manner from skilled crafts legislation in most other European countries, this aspect is particularly significant and it is conceivable that the results will be useful beyond the borders of the Federal Republic of Germany. The research findings will also be important in determining the limits of deregulation and when it can be considered counterproductive from an economic point of view.

Craft-Art as a Basis for Human Activity

Science.gov (United States)

Karppinen, Seija

2008-01-01

This article based on my doctoral thesis examines the Basic Arts Education system in Finland, focusing on Basic Crafts Education and its description through action concepts. The main task of the study was to create a concept model. In the first part of the study a concept map was created from the practice of Basic Crafts Education. The aim of the…

Job crafting among health care professionals: The role of work engagement.

Science.gov (United States)

Bakker, Arnold B

2018-04-01

The aim of this study was to examine the impact of job crafting on the quality of the work environment of health care professionals. Job crafting refers to proactive behavior aimed at optimizing the fit between person and job. Using job demands-resources theory, we hypothesized that job crafting would be positively related to job resources and person-organisation fit, and negatively to hindrance demands. Furthermore, we hypothesized that these relationships would be qualified by work engagement. A total of 5,272 health care professionals from one of 35 different organisations filled out an electronic questionnaire (response is 55%). Regression analyses were used to test hypotheses. Consistent with hypotheses, job crafting in the form of increasing job resources was positively related to opportunities for development, performance feedback and P-O fit; and negatively related to hindrance job demands - particularly when work engagement was high. The combination of job crafting and work engagement is important for the realization of a resourceful work environment and fit between person and organisation. Interventions aimed at fostering job crafting should be tailored to the motivation of health care professionals. © 2017 John Wiley & Sons Ltd.

Craft Training in Russia: Theory and Practice of Development

Science.gov (United States)

Romantsev, Gennadij M.; Efanov, Andrei V.; Moiseev, Andrei V.; Bychkova, Ekaterina Yu.; Karpova, Natalia P.; Tidemann, Bruno

2016-01-01

The relevance of the research topic is substantiated by the social commitment to the establishment of a system of craft training focused on training personnel for craft enterprises. The purpose of the article is to provide theoretical and methodological substantiation of the necessity to provide organizational and pedagogical foundations for the…

Malleable Thought: The Role of Craft Thinking in Practice-Led Graphic Design

Science.gov (United States)

Ings, Welby

2015-01-01

This article considers the potential of craft processes as creative engagements in graphic design research. It initially discusses the uneasy history of craft within the discipline, then draws upon case studies undertaken by three established designers who, in their postgraduate theses, engaged with craft as a process of thinking. In doing so, the…

46 CFR 180.206 - Survival craft-vessels operating on Great Lakes routes.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Survival craft-vessels operating on Great Lakes routes... Craft § 180.206 Survival craft—vessels operating on Great Lakes routes. (a) Except as allowed by... with the survival craft required by § 180.205 (a) through (e), as appropriate. (b) Each vessel...

46 CFR 180.205 - Survival craft-vessels operating on limited coastwise routes.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Survival craft-vessels operating on limited coastwise... Craft § 180.205 Survival craft—vessels operating on limited coastwise routes. (a) Except as allowed by... survival craft required by § 180.204(d). (e) Each vessel certificated to operate on a limited coastwise...

Automatic Construction by Contour Crafting Technology

Directory of Open Access Journals (Sweden)

Mohammad Reza Khorramshahi

2017-07-01

Full Text Available Contour Crafting is a novel technology in construction industry based on 3D printing that uses robotics to construct free form building structures by repeatedly laying down layers of material such as concrete. It is actually an approach to scale up automatic fabrication from building small industrial parts to constructing buildings. However, there are little information about contour crafting (CC in current use; present paper aims to describe the operational steps of creating a whole building by the machine reviewing relevant literature. Furthermore, it will represent the advantages of CC usage compared to traditional construction methods, as well as its applicability in construction industry.

A discussion of the necessity of craft education in the 21st century

Directory of Open Access Journals (Sweden)

Eva Veeber

2015-02-01

Full Text Available Craft education has held a permanent place in Estonian and Finnish schools, although its value and appreciation have changed over time. The aim of the article is to discuss the necessity of craft education in today’s world and its possible impact on the development of children and adolescents. The discussion seeks an interdisciplinary explanation using three perspectives that complement each other. The first describes the challenges of modern society with respect to individual development and schooling. The second deals with Aaron Antonovsky's theory of generalized resistance resources and an individual's possibility to manage in a stressful society. The third addresses the individual as a developing neurological being, along with the effect of learning and practicing motor skills on the human brain. We conclude that crafts is a multidisciplinary phenomenon, and that learning and practicing crafts promotes the comprehension of diversity and challenges in life. Additionally, educational crafts enriches the learning environment, offering opportunities to develop transferable skills that human beings constantly need in society. In addition, crafts provides a balanced way to come to understand the world and one’s role in it, by simultaneously promoting motor and cognitive development and making unique demands on one’s being.Keywords: crafts, craft education, making, sense of coherence, education, embodiment

The impact of job crafting on job demands, job resources, and well-being.

Science.gov (United States)

Tims, Maria; Bakker, Arnold B; Derks, Daantje

2013-04-01

This longitudinal study examined whether employees can impact their own well-being by crafting their job demands and resources. Based on the job demands-resources model, we hypothesized that employee job crafting would have an impact on work engagement, job satisfaction, and burnout through changes in job demands and job resources. Data was collected in a chemical plant at three time points with one month in between the measurement waves (N = 288). The results of structural equation modeling showed that employees who crafted their job resources in the first month of the study showed an increase in their structural and social resources over the course of the study (2 months). This increase in job resources was positively related to employee well-being (increased engagement and job satisfaction, and decreased burnout). Crafting job demands did not result in a change in job demands, but results revealed direct effects of crafting challenging demands on increases in well-being. We conclude that employee job crafting has a positive impact on well-being and that employees therefore should be offered opportunities to craft their own jobs.

Guides crafting meaning and identity in a flexible working life

DEFF Research Database (Denmark)

Meged, Jane Widtfeldt

2017-01-01

and adding a critical perspective, we understand the guides’ agency, and how they craft scope, tasks and relations in order to sustain a positive self-image and a meaningful working life. Comparing certified guides’ job-crafting practices, we learn that guides are alike across the three countries......Certified guides are exemplary, well-educated, self-employed, casual labourers in a liberal and competitive job market. Applying grounded theory, this exploratory study builds on in-depth qualitative interviews with Danish, Italian and French certified guides. Informed by the theory of job crafting...

Deaminated zeolite, ITQ-6 as heterogeneous catalyst for Friedel crafts alkylation

International Nuclear Information System (INIS)

Zainab Ramli; Noor Ashikin Mohd Yusoff; Halimaton Hamdan

2007-01-01

The ability of ITQ-6, a kind of meso porous zeolitic material to replace microporous zeolite as catalyst has attracted particular attention. In this study, modification of a precursor of microporous ferrierite, PREFER to meso porous material, ITQ-6 was carried out by delamination technique. The XRD results show that the crystalline phase of PREFER diminished for the sample after delamination. Porosity study of the ITQ-6 sample shows formation of homogeneous meso pores in the size between 3.5-4.0 nm. The acidity study indicates that ITQ-6 still contains appreciable amounts of Bronsted and Lewis acidities. Catalytic evaluation of the resulting material, ITQ-6 was carried out in the alkylation of resorcinol with methyl tert-butyl ether which gave 4-tert-butyl resorcinol and 4, 6-di-tert-butyl resorcinol as main products. The conversion of resorcinol when using ITQ-6 was ten times higher than ferrierite, FER with similar selectivity of disubstituted product. It shows that the meso porosity of ITQ-6 was responsible for the higher activity of the catalyst in the reaction. (author)

Intramolekulare Friedel-Crafts-Acylierung von N-Phthaloyl-substituierten Aryl- und Homophenylalanylchloriden

OpenAIRE

Effenberger, Franz; Steegmüller, Dieter; Null, Volker; Ziegler, Thomas

1988-01-01

Die intramolekulare Acylierung von N-Phthaloyl-geschützten Aryl- und Homophenylalanychloriden 5 mit zweifach molaren Mengen AlCl3 oder katalytischen Mengen FeCl3 führt zu 2-Phthal-imido-l-indanonen 6 bzw. -1-tetralon (6d). Während die Cyclo-acylierung zum Tetralon 6d mit AlCl3 und mit FeCl3 racemisierungsfrei mit sehr guten Ausbeuten abläuft, erfolgt die Bildung des Indanons 6a mit FeCl3 unter Racemisierung. N-Phthaloyl-geschützte α-Aminosäurechloride bilden mit Silber-trifluormethansulf...

The craft of screenwriting

NARCIS (Netherlands)

Weijers, G.W.M.

2014-01-01

Isn't it ironic? Screenwriting is not something you learn from a book, or a talent that just falls into your lap. Nevertheless, without talent you will never become a great scriptwriter. Above all scriptwriting is a craft that you learn to master by writing, reflecting, and rewriting time after

Taking control: Is job crafting related to the intention to leave surgical training?

Science.gov (United States)

Dominguez, Luis Carlos; Stassen, Laurents; de Grave, Willem; Sanabria, Alvaro; Alfonso, Edgar; Dolmans, Diana

2018-01-01

The intention to leave surgical training, hereinafter referred as proxy of "attrition," is associated with poor well-being in the workplace. Attrition is suggested to diminish when residents possess job-crafting skills, that is, the ability to redefine their job in meaningful ways and maximize well-being at work by increasing structural and social resources and challenges and decreasing hindering demands. However, the evidence supporting this relationship is scant. This study sought to: 1) investigate to what extent residents possess job-crafting skills and compare residents' levels of job-crafting skills across years of residency training; 2) investigate the relationship between job crafting, well-being as measured by burnout and work-engagement rates, and the intention to leave; and 3) compare the levels of job-crafting skills and well-being between residents with and without serious intentions to leave. This cross sectional study was conducted in fifteen residency programs in Colombia. Surgical residents completed different questionnaires including the Dutch Job Crafting Scale (DJCS), MBI-Human Services Survey (MBI-HSS), Utrecht Work Engagement Scale (UWES-17) and an adapted version of the Nurse Turnover Intention Scale (NTIS). The objectives were addressed by independent analyses of variance (ANOVA), structural equation modeling techniques (SEM) and independent t-tests, respectively. A total of 202 residents participated. Residents generally scored high on their job-crafting skills to increase structural and social resources as well as challenging demands, but were less positive about their skills to reduce hindering demands. No differences across years of training were found. Job crafting correlated positively with work-engagement, which was inversely related to the intention to leave. Conversely, job crafting correlated negatively with burnout, which bore a positive relationship to the intention to leave. Residents with serious intentions to leave exhibited

Productive and counterproductive job crafting: A daily diary study.

Science.gov (United States)

Demerouti, Evangelia; Bakker, Arnold B; Halbesleben, Jonathon R B

2015-10-01

The present study aims to uncover the way daily job crafting influences daily job performance (i.e., task performance, altruism, and counterproductive work behavior). Job crafting was conceptualized as "seeking resources," "seeking challenges," and "reducing demands" and viewed as strategies individuals use to optimize their job characteristics. We hypothesized that daily job crafting relates to daily job demands and resources (work pressure and autonomy), which consequently relate to daily work engagement and exhaustion and ultimately to job performance. A sample of 95 employees filled in a quantitative diary for 5 consecutive working days (n occasions = 475). We predicted and found that daily seeking resources was positively associated with daily task performance because daily autonomy and work engagement increased. In contrast, daily reducing demands was detrimental for daily task performance and altruism, because employees lower their daily workload and consequently their engagement and exhaustion, respectively. Only daily seeking challenges was positively (rather than negatively) associated with daily counterproductive behavior. We conclude that employee job crafting can have both beneficial and detrimental effects on job performance. (c) 2015 APA, all rights reserved).

Crafting by concepts fiber arts and mathematics

CERN Document Server

Belcastro, Sarah-Marie

2016-01-01

From the editors of the popular Making Mathematics with Needlework, this book presents projects that highlight the relationship between types of needlework and mathematics. Chapters start with accessible overviews presenting the interplay between mathematical concepts and craft expressions. Following sections explain the mathematics in more detail, and provide suggestions for classroom activities. Each chapter ends with specific crafting instructions. Types of needlework included are knitting, crochet, needlepoint, cross-stitch, quilting, temari balls, beading, tatting, and string art. Instructions are written as ordinary patterns, so the formatting and language will be familiar to crafters.

Strong Quantum Size Effects in Pb(111) Thin Films Mediated by Anomalous Friedel Oscillations

Science.gov (United States)

Jia, Yu; Wu, Biao; Li, Chong; Einstein, T. L.; Weitering, H. H.; Zhang, Zhenyu

2010-08-01

Using first-principles calculations within density functional theory, we study Friedel oscillations (FOs) in the electron density at different metal surfaces and their influence on the lattice relaxation and stability of ultrathin metal films. We show that the FOs at the Pb(111) surface decay as 1/x with the distance x from the surface, different from the conventional 1/x2 power law at other metal surfaces. The underlying physical reason for this striking difference is tied to the strong nesting of the two different Fermi sheets along the Pb(111) direction. The interference of the strong FOs emanating from the two surfaces of a Pb(111) film, in turn, not only results in superoscillatory interlayer relaxations around the center of the film, but also determines its stability in the quantum regime. As a simple and generic picture, the present findings also explain why quantum size effects are exceptionally robust in Pb(111) films.

When craft and science collide: Improving therapeutic practices through evidence-based innovations.

Science.gov (United States)

Justice, Laura M

2010-04-01

Evidence-based practice (EBP) is a model of clinical decision-making that is increasingly being advocated for use in the field of speech-language pathology. With the increased emphasis on scientific evidence as a form of knowledge important to EBP, clinicians may wonder whether their craft-based knowledge (i.e., knowledge derived from theory and practice), remains a legitimate form of knowledge for use in clinician decisions. This article describes forms of knowledge that may be used to address clinical questions, to include both craft and science. Additionally, the steps used when engaging in EBP are described so that clinicians understand when and how craft comes into play. The major premise addressed within this article is that craft is a legitimate form of knowledge and that engagement in EBP requires one to employ craft-based knowledge.

Searching the Soul: Veterans and Their Arts and Crafts

Science.gov (United States)

Hasio, Cindy

2011-01-01

For military veterans suffering from the long-term trauma of warfare, arts and crafts become much more than the fabrication of relics; they can literally save the spirit. Dialogue and interaction between the veterans, volunteers, and staff are crucial to the success of veterans' arts and crafts program. The purpose of this research was threefold.…

Major factors influencing craft productivity in nuclear power plant construction

International Nuclear Information System (INIS)

Borcherding, J.D.; Sebastian, S.J.

1980-01-01

This paper reports on a research study whose objective was to determine the most influential factors adversely affecting craft productivity in nuclear power plant construction from the perspective of the tradesmen employed at the sites. Data were collected through the use of a questionnaire survey and group interview sessions, predominantly with workmen, at six nuclear power plant construction projects. Craftsmen were chosen as the major data base because of their awareness of how their time would actually be spent on the project. Topics considered include the factors influencing craft productivity, material availability, redoing work, crew interfacing, overcrowded work areas, instruction time, inspection delays, craft turnover, craft absenteeism, foreman changes, foreman incompetence, engineering design lead time, comprehensive scheduling of the design function, the responsibility of the utility, value engineering, plant standardization, the effective utilization of the planning and scheduling system, and the labor-management committee

Concept annotation in the CRAFT corpus.

Science.gov (United States)

Bada, Michael; Eckert, Miriam; Evans, Donald; Garcia, Kristin; Shipley, Krista; Sitnikov, Dmitry; Baumgartner, William A; Cohen, K Bretonnel; Verspoor, Karin; Blake, Judith A; Hunter, Lawrence E

2012-07-09

Manually annotated corpora are critical for the training and evaluation of automated methods to identify concepts in biomedical text. This paper presents the concept annotations of the Colorado Richly Annotated Full-Text (CRAFT) Corpus, a collection of 97 full-length, open-access biomedical journal articles that have been annotated both semantically and syntactically to serve as a research resource for the biomedical natural-language-processing (NLP) community. CRAFT identifies all mentions of nearly all concepts from nine prominent biomedical ontologies and terminologies: the Cell Type Ontology, the Chemical Entities of Biological Interest ontology, the NCBI Taxonomy, the Protein Ontology, the Sequence Ontology, the entries of the Entrez Gene database, and the three subontologies of the Gene Ontology. The first public release includes the annotations for 67 of the 97 articles, reserving two sets of 15 articles for future text-mining competitions (after which these too will be released). Concept annotations were created based on a single set of guidelines, which has enabled us to achieve consistently high interannotator agreement. As the initial 67-article release contains more than 560,000 tokens (and the full set more than 790,000 tokens), our corpus is among the largest gold-standard annotated biomedical corpora. Unlike most others, the journal articles that comprise the corpus are drawn from diverse biomedical disciplines and are marked up in their entirety. Additionally, with a concept-annotation count of nearly 100,000 in the 67-article subset (and more than 140,000 in the full collection), the scale of conceptual markup is also among the largest of comparable corpora. The concept annotations of the CRAFT Corpus have the potential to significantly advance biomedical text mining by providing a high-quality gold standard for NLP systems. The corpus, annotation guidelines, and other associated resources are freely available at http://bionlp-corpora.sourceforge.net/CRAFT/index.shtml.

Automatic Generation of the Planning Tunnel High Speed Craft Hull Form

Institute of Scientific and Technical Information of China (English)

Morteza Ghassabzadeh; Hassan Ghassemi

2012-01-01

The creation of geometric model of a ship to determine the characteristics of hydrostatic and hydrodynamic,and also for structural design and equipments arrangement are so important in the ship design process.Planning tunnel high speed craft is one of the crafts in which,achievement to their top speed is more important.These crafts with the use of tunnel have the aero-hydrodynamics properties to diminish the resistance,good sea-keeping behavior,reduce slamming and avoid porpoising.Because of the existence of the tunnel,the hull form generation of these crafts is more complex and difficult.In this paper,it has attempted to provide a method based on geometry creation guidelines and with an entry of the least control and hull form adjustment parameters,to generate automatically the hull form of planning tunnel craft.At first,the equations of mathematical model are described and subsequent,three different models generated based on present method are compared and analyzed.Obviously,the generated model has more application in the early stages of design.

Crafting qualities in designing QR-coded embroidery and bedtime stories

NARCIS (Netherlands)

Kuusk, K.; Wensveen, S.A.G.; Tomico, O.

2014-01-01

There is a renewed interest into crafts and what it can mean when integrating new technologies into textiles. This paper proposes to embed craft qualities and sustainable values into designing smart textile projects. Our design iterations QR-Coded Embroidery and Bedtime Stories combine textiles,

Valuing Craftsmanship: In particular the crafting of Chinese porcelain and Dutch Delft Blue

NARCIS (Netherlands)

L. Jiang (Lili)

2018-01-01

markdownabstract“How important are crafts for a society?” When a conventional economist gets the question, the answer is most likely about the prices of craft products, the income of craftspeople, and the contribution that the crafts sector makes to GDP. This thesis gives another answer. Applying

33 CFR 149.310 - What are the muster and embarkation requirements for survival craft?

Science.gov (United States)

2010-07-01

... embarkation requirements for survival craft? 149.310 Section 149.310 Navigation and Navigable Waters COAST... and embarkation requirements for survival craft? Muster and embarkation arrangements for survival craft must comply with 46 CFR 108.540. ...

Craft's brand equity in CZ, focusing on canoeing

OpenAIRE

Šťastný, Šimon

2013-01-01

Title: Craft's brand equity in CZ, focusing on flat water canoeing. Objectives: The objective of this dissertation is to find out what is the Craft's brand equity and to suggest how to improve it on the Czech market. That would be based on marketing research and supplementary interview. I will be using marketing research and supplementary interview. Methods: In this dissertation the method of electronic questioning was used. The questionnaires were sent by email address after first contact on...

Construction and Validation of the Perceived Opportunity to Craft Scale.

Science.gov (United States)

van Wingerden, Jessica; Niks, Irene M W

2017-01-01

We developed and validated a scale to measure employees' perceived opportunity to craft (POC) in two separate studies conducted in the Netherlands (total N = 2329). POC is defined as employees' perception of their opportunity to craft their job. In Study 1, the perceived opportunity to craft scale (POCS) was developed and tested for its factor structure and reliability in an explorative way. Study 2 consisted of confirmatory analyses of the factor structure and reliability of the scale as well as examination of the discriminant and criterion-related validity of the POCS. The results indicated that the scale consists of one dimension and could be reliably measured with five items. Evidence was found for the discriminant validity of the POCS. The scale also showed criterion-related validity when correlated with job crafting (+), job resources (autonomy +; opportunities for professional development +), work engagement (+), and the inactive construct cynicism (-). We discuss the implications of these findings for theory and practice.

Digitizing Craft: Creative Writing Studies and New Media--A Proposal

Science.gov (United States)

Koehler, Adam

2013-01-01

This article identifies and examines a digital arm of creative writing studies and organizes that proposal into four categories through which to theorize the "craft" of creative production, each borrowed from Tim Mayers's "(Re)Writing Craft: Composition, Creative Writing, and the Future of English Studies": process, genre, author, and…

33 CFR 149.305 - What are the survival craft requirements for temporary personnel?

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false What are the survival craft... EQUIPMENT Lifesaving Equipment Manned Deepwater Port Requirements § 149.305 What are the survival craft... complement exceeds the capacity of the survival craft required under § 149.304 of this subpart, the port must...

A systematic first-principles study of surface energies, surface relaxation and Friedel oscillation of magnesium surfaces

International Nuclear Information System (INIS)

Tang, Jia-Jun; Yang, Xiao-Bao; Zhao, Yu-Jun; OuYang, LiuZhang; Zhu, Min

2014-01-01

We systematically study the surface energies and surface relaxations of various low-index and high-index Mg surfaces. It is found that low-index surfaces are not necessarily stable as Mg(1 0  1-bar  0) is the most unstable surface in the series of Mg(1 0  1-bar  n) (n = 0–9). A surface-energy predicting model based on the bond cutting is proposed to explain the relative surface stabilities. The local relaxations of the low-index surfaces could be explained by the Friedel oscillation. For the high-index surfaces, the combination of charge smoothing effect and dramatic charge depletion influences the relaxations, which show a big difference from the low-index ones. Our findings provide theoretical data for considerable insights into the surface energies of hexagonal close-packed metals. (paper)

76 FR 38153 - California State Nonroad Engine Pollution Control Standards; Commercial Harbor Craft Regulations...

Science.gov (United States)

2011-06-29

... Standards; Commercial Harbor Craft Regulations; Opportunity for Public Hearing and Comment AGENCY... engines on commercial harbor craft. CARB has requested that EPA issue a new authorization under [email protected] . SUPPLEMENTARY INFORMATION: I. California's Commercial Harbor Craft Regulations In a...

Practical synthesis of methyl 7-(3-hydroxy-5-oxocyclopent-1-en-1-yl-heptanoate

Directory of Open Access Journals (Sweden)

Xinpeng Jiang

2017-07-01

Full Text Available The key intermediate of misoprostol, methyl 7-(3-hydroxy-5-oxocyclopent-1-en-1-yl-heptanoate was prepared from commercially available suberic acid in 40% yield over five steps. The key step involved a ZnCl2 catalyzed Friedel-Crafts reaction between furan and 2,9-oxonanedione. Sulfuric acid catalyzed methylation of 8-(furan-2-yl-8-oxooctanoic acid followed by sequential reduction and ZnCl2 catalyzed Piancatelli rearrangement resulted in the formation of the key intermediate of misoprostol.

A Concise Synthesis and the Antibacterial Activity of 5,6-Dimethoxynaphthalene-2-carboxylic Acid

OpenAIRE

GÖKSU, Süleyman; UĞUZ, Metin Tansu

2014-01-01

5,6-Dimethoxynaphthalene-2-carboxylic acid was synthesized in 7 steps and with an overall yield of 46%. Bromination of 2-naphthol, and methylation with dimethyl sulfate followed by Friedel-Crafts acylation with AcCl gave 2-acetyl-5-bromo-6-methoxynaphthalene. 2-Acetyl-5-bromo-6-methoxynaphthalene was converted to 5-bromo-6- methoxynaphthalene-2-carboxylic acid by a haloform reaction. The esterification of the acid with methanol, methoxylation with NaOCH3 in the presence of CuI and s...

Job crafting, work engagement, and psychological distress among Japanese employees: a cross-sectional study

OpenAIRE

Sakuraya, Asuka; Shimazu, Akihito; Eguchi, Hisashi; Kamiyama, Kimika; Hara, Yujiro; Namba, Katsuyuki; Kawakami, Norito

2017-01-01

Background Job crafting, an employee-initiated job design/redesign, has become important for employees? well-being. However, most studies on the relationship between job crafting and employees? well-being have been conducted in western countries; thus, it is unclear whether job crafting can be effectively applied to Asian cultures, such as Japan, which emphasizes group harmony. The aim of this study was to examine the cross-sectional associations of self-reported job crafting with work engage...

A study of the breakdown of Friedel's law in electron backscatter Kikuchi diffraction patterns: Application to zincblende-type structures

International Nuclear Information System (INIS)

Baba-Kishi, K.Z.

1991-01-01

The breakdown of Friedel's law has been observed in backscatter Kikuchi diffraction patterns (BKDP) obtained in the scanning electron microscope (SEM) from a series of zincblende structures including GaAs, InP, GaSb, CdHgTe and the minerals sphalerite (ZnS), chalcopyrite (CuFeS 2 ) and tetrahedrite (Cu 12 Sb 4 S 13 ). Differences in intensities were observed between the reflections 11anti 1 and 5anti 1anti 1 in InP, GaSb, CdHgTe and sphalerite, thus allowing the non-centrosymmetric point group anti 43 m to be determined. In GaAs, differences in intensities were noted between anti 511 and anti 5anti 11. In chalcopyrite and tetrahedrite, non-equivalent intensities were observed between anti 215 and 2anti 1anti 5 and between 3anti 1anti 2 and 31anti 2, respectively. In addition, BKDPs obtained from chalcopyrite revealed a small displacement at the point where the pair of equivalent reflections anti 406 and 460 intersect within the Kikuchi band 02anti 2. The presence of this displacement together with observation of the breakdown of Friedel's law confirmed the tetragonal point group anti 42m for chalcopyrite. Although the point groups of GaAs, chalcopyrite and tetrahedrite were derived successfully using BKDPs, determination of their space groups proved unsuccessful. The superstructure reflections were invisible because the structure factors are very small. The behaviour of the invisible 200 reflection in GaAs is investigated using many-beam dynamical intensity profiles calculated across the h00 systematic row of reflections. Dynamical intensity profiles calculated across the h00 systematic rows of reflections for Ge, InP and sphalerite are also discussed. (orig.)

Students' Attitudes towards Craft and Technology in Iceland and Finland

Science.gov (United States)

Thorsteinsson, Gísli; Ólafsson, Brynjar; Autio, Ossi

2012-01-01

Craft education in both Finland and Iceland originated over 140 years ago and was influenced by the Scandinavian Sloyd pedagogy. Since then, the subject has moved away from craft and towards technology, with the aim being to increase students' technological abilities. In the beginning, the subject largely focused on the students copying artefacts,…

The effects of job crafting on subjective well-being amongst South African high school teachers

Directory of Open Access Journals (Sweden)

Sergio Peral

2016-09-01

Full Text Available Orientation: Job crafting can result in a number of positive outcomes for teachers, such as increased meaningfulness and engagement at work. Increased work engagement and psychological meaningfulness may yield positive benefits for the practice of teaching, thus highlighting the pivotal role of job crafting. Research purpose: The study’s aim was to investigate the relationship between job crafting and subjective well-being amongst South African high school teachers. Subjective well-being comprises psychological meaningfulness and work engagement. The potential mediating effect that psychological meaningfulness had on this relationship was further explored. Motivation for the study: Being in a highly stressful occupation, teachers need to continuously find ways to craft their working practices in order to deal effectively with their job demands and to capitalise on their available job resources. Furthermore, South Africa’s current education system calls for serious proactive measures to be taken to improve and rectify the current status, such as job crafting. Research approach, design and method: A quantitative, cross-sectional survey design was used and administered to a sample of South African high school teachers situated in Gauteng, South Africa (N = 251. Main findings: A positive relationship was found between job crafting (increasing structural resources and challenging job demands and work engagement. Furthermore, psychological meaningfulness mediated the relationship between job crafting and work engagement amongst the sampled high school teachers. Practical/managerial implications: Teachers who craft their work to better suit their preferences and needs will obtain greater meaning in their work and experience increased levels of work engagement. Training programmes and/or group-based interventions targeted around job crafting techniques may be particularly useful in the South African teaching context. Contribution/value-add: This

Cooking and Hammering: Primary School Pupils' Concepts of their Craft Skills

Directory of Open Access Journals (Sweden)

Mare MÜÜRSEPP

2014-07-01

Full Text Available The aim of the study is to clear the significance of craft skills for the pupils in age nine and twelve years. More than 200 pupils were asked to define, what are the most important skills for the pupils of their age. The results bring out that category of the skills related to craft subject is of the most presented categories in pupils' self description. Thus the primary school pupils essentially defined themselves by the activities they could do practically (building, cooking, repairing of things. The most undefined relation to craft activities is reflected in the answer of smaller boys in our study. A suspicion arisen from the analysis of pupils' sayings, that the craft lessons in the 1st school stage tend to be organized kind of poorly was asserted by the teachers who pointed out the need for special rooms and materials to implement different techniques.

Learning Practices of Femininity through Gendered Craft Education in Finland

Science.gov (United States)

Kokko, Sirpa

2009-01-01

This paper discusses the processes and practices that link crafts and gender in the upbringing and education of girls. The paper is based on a study conducted among female primary school trainee teachers in Finland. The data are comprised of their experiences with crafts as schoolgirls. The methods of the study were memory work and writing of…

Primary student teachers’ perceptions of their prior experiences with craft-making in light of Hannah Arendt’s human condition

Directory of Open Access Journals (Sweden)

Seija Karppinen

2013-09-01

Full Text Available This article presents the results of a study about student teachers’ feelings toward craft-making and teaching crafts. As a teacher educator in teacher training, my interest lies first in student teachers’ prior craft experiences and in their prejudices about themselves as craft-makers in relation to the human condition as set forth by philosopher Hannah Arendt (1958/2002. Second, I am interested in how students’ experiences and their image of crafts affect their attitude to crafts and teaching crafts. The study uses qualitative content analysis (e.g. Cohen, Manion & Morrison, 2007, concept clarification (e.g. Kramer, 1993; Burkin, 2011 and thought experiments (Zalta, 2011; Cohnitz, 2006; Sorensen, 1992 to identify and categorise student teachers’ emotional experiences. The data consist of essays (craft biographies, N=144 by first-year student teachers which were written in 2008 and 2009 during a basic course in crafts as part of teacher education at the University of Helsinki. Arendt (1958/2002 labelled the elements of the human condition as labour, work and action. In this study I discuss how, for instance, Arendtian concepts could be explained in relation to crafts, craft-making and education. Arendt categorises craft, defined as things made by hand, as part of the concept of work. In this study, I consider whether crafts and craft-making could be part of other Arendtian terms as well and how these terms fit various educational situations. As a result, there is a need for additional terms alongside Arendtian terms to describe multifaceted craft-making and primary student teachers’ perceptions of themselves as craft-makers. In relation to student teachers’ memories on primary school crafts, I have labelled Arendtian concept labour as students’ credit-orientated activity, the concept of work as making-orientated activity and the concept of action as interaction-orientated activity. These three orientations of craft frame student

Experimental Investigation of a Wing-in-Ground Effect Craft

Directory of Open Access Journals (Sweden)

M. Mobassher Tofa

2014-01-01

Full Text Available The aerodynamic characteristics of the wing-in-ground effect (WIG craft model that has a noble configuration of a compound wing was experimentally investigated and Universiti Teknologi Malaysia (UTM wind tunnel with and without endplates. Lift and drag forces, pitching moment coefficients, and the centre of pressure were measured with respect to the ground clearance and the wing angle of attack. The ground effect and the existence of the endplates increase the wing lift-to-drag ratio at low ground clearance. The results of this research work show new proposed design of the WIG craft with compound wing and endplates, which can clearly increase the aerodynamic efficiency without compromising the longitudinal stability. The use of WIG craft is representing an ambitious technology that will help in reducing time, effort, and money of the conventional marine transportation in the future.

Experimental investigation of a wing-in-ground effect craft.

Science.gov (United States)

Tofa, M Mobassher; Maimun, Adi; Ahmed, Yasser M; Jamei, Saeed; Priyanto, Agoes; Rahimuddin

2014-01-01

The aerodynamic characteristics of the wing-in-ground effect (WIG) craft model that has a noble configuration of a compound wing was experimentally investigated and Universiti Teknologi Malaysia (UTM) wind tunnel with and without endplates. Lift and drag forces, pitching moment coefficients, and the centre of pressure were measured with respect to the ground clearance and the wing angle of attack. The ground effect and the existence of the endplates increase the wing lift-to-drag ratio at low ground clearance. The results of this research work show new proposed design of the WIG craft with compound wing and endplates, which can clearly increase the aerodynamic efficiency without compromising the longitudinal stability. The use of WIG craft is representing an ambitious technology that will help in reducing time, effort, and money of the conventional marine transportation in the future.

Analyzing components of Community Reinforcement and Family Training (CRAFT): Is treatment entry training sufficient?

Science.gov (United States)

Kirby, Kimberly C; Benishek, Lois A; Kerwin, MaryLouise E; Dugosh, Karen L; Carpenedo, Carolyn M; Bresani, Elena; Haugh, James A; Washio, Yukiko; Meyers, Robert J

2017-11-01

Community Reinforcement and Family Training (CRAFT) assists family members with a treatment-resistant loved one. The most consistent outcome of CRAFT is increased treatment entry of the identified treatment-resistant person (IP). This led us to question whether all 6 components of CRAFT are necessary. In a randomized clinical trial, 115 concerned significant others (CSOs) of an IP received 12-14 sessions of the full CRAFT intervention, 4-6 sessions focused on Treatment Entry Training (TEnT), or 12-14 sessions of Al-Anon/Nar-Anon Facilitation (ANF). We monitored treatment entry, attendance, and substance use of the IP and the CSO's mood and functioning. Data were collected at baseline and 4, 6, and 9 months after the baseline. We found significant reductions in time to treatment entry (χ(2)2 = 8.89, p = .01) and greater treatment entry rates for CRAFT (62%; odds ratio [OR] = 2.7, 95% confidence interval [CI] = 1.1-6.9) and TEnT (63%; OR = 2.9, 95% CI = 1.2-7.5) compared with ANF (37%), but CRAFT and TEnT did not differ significantly from each other (OR = 1.1, 95% CI = 0.4-2.7). No between-group differences in IP drug use were reported by CSOs, but days of drug use decreased over time for all groups (F(3, 277) = 13.47, p CRAFT produces greater treatment entry rates than ANF and found similar treatment entry rates for CRAFT and TEnT. This suggests that treatment entry training is sufficient for producing the best established outcome of CRAFT. (PsycINFO Database Record (c) 2017 APA, all rights reserved).

High Job Demands, Still Engaged and Not Burned Out? The Role of Job Crafting.

Science.gov (United States)

Hakanen, Jari J; Seppälä, Piia; Peeters, Maria C W

2017-08-01

Traditionally, employee well-being has been considered as resulting from decent working conditions arranged by the organization. Much less is known about whether employees themselves can make self-initiated changes to their work, i.e., craft their jobs, in order to stay well, even in highly demanding work situations. The aim of this study was to use the job demands-resources (JD-R model) to investigate whether job crafting buffers the negative impacts of four types of job demands (workload, emotional dissonance, work contents, and physical demands) on burnout and work engagement. A questionnaire study was designed to examine the buffering role of job crafting among 470 Finnish dentists. All in all, 11 out of 16 possible interaction effects of job demands and job crafting on employee well-being were significant. Job crafting particularly buffered the negative effects of job demands on burnout (7/8 significant interactions) and to a somewhat lesser extent also on work engagement (4/8 significant interactions). Applying job crafting techniques appeared to be particularly effective in mitigating the negative effects of quantitative workload (4/4 significant interactions). By demonstrating that job crafting can also buffer the negative impacts of high job demands on employee well-being, this study contributed to the JD-R model as it suggests that job crafting may even be possible under high work demands, and not only in resourceful jobs, as most previous studies have indicated. In addition to the top-down initiatives for improving employee well-being, bottom-up approaches such as job crafting may also be efficient in preventing burnout and enhancing work engagement.

Secondary School Design: Workshop Crafts.

Science.gov (United States)

Department of Education and Science, London (England).

Design features are described for school shop facilities. Some general requirements common to most workshops are discussed; and specific design information is provided for general woodwork, general metalwork, and combined wood and metalwork facilities. The grouping of the workshop crafts and their relation to other parts of the school are also…

46 CFR 180.204 - Survival craft-vessels operating on coastwise routes.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Survival craft-vessels operating on coastwise routes. 180.204 Section 180.204 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) SMALL... Craft § 180.204 Survival craft—vessels operating on coastwise routes. (a) Except as allowed by paragraph...

46 CFR 180.207 - Survival craft-vessels operating on lakes, bays, and sounds routes.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Survival craft-vessels operating on lakes, bays, and... Survival Craft § 180.207 Survival craft—vessels operating on lakes, bays, and sounds routes. (a) Except as... warm water is not required to carry survival craft. (d) A vessel certificated to operate on lakes, bays...

Ultrasonicated Synthesis of N-Benzyl-2,3-substituted Morpholines, via the Mitsunobu Diol Cyclisation

Directory of Open Access Journals (Sweden)

B. Jayachandra Reddy

2010-01-01

Full Text Available A facile five step synthesis of N-benzyl-2,3-substituted morpholines (i-iii was performed. The key steps were microwave assisted Friedel-crafts acylation and diol cyclization carried out via an ultra sonication of Mitsunobu reaction using DEAD (diethylazodicarboxylate, TPP in THF for 1 h. The morpholine products were generated as diasteriomers (ii andiii which has been separated by the column chromatography to good yield. The structure of compounds (i-iii has been characterized by the spectral and chemical studies.

Leader–member exchange fosters work engagement: The mediating role of job crafting

Directory of Open Access Journals (Sweden)

Mirjam Radstaak

2017-09-01

Full Text Available Orientation: The right balance between job demands and job resources are essential for employees to bring energy and enthusiasm to work. Employees who experience high-quality relationships with their supervisors may actively craft their job demands and job resources and feel more engaged. Research purpose: The current study examined the associations between leader–member exchange (LMX, job crafting and work engagement. Motivation: This study attempts to gain more insight in the associations between LMX, job crafting and work engagement. It was hypothesised that high-quality relationships with supervisors fosters work engagement because it stimulates employees to craft their jobs by increasing social and structural job resources and challenging job demands and by decreasing hindering job demands. Research approach, design and methodology: Participants (N = 402 working for a leading mail and parcels company in the Netherlands completed questionnaires measuring LMX, work engagement and job crafting. Structural equation modelling was used to examine the hypotheses. Main findings: Increasing social job resources (β = 0.01, SE = 0.00, p < 0.001 and increasing challenging job demands (β = 0.08, SE = 0.04, p < 0.05 were significant mediators in the association between LMX and work engagement. Increasing structural job resources (β = 0.00, SE = 0.00, p = 0.92 and decreasing hindering job demands (β = -0.00, SE 0.00, p = 0.09 were not significant mediators. Practical and managerial implications: Supervisors who are capable of building high-quality relationships with their employees based on trust, respect and loyalty will foster a positive, fulfilling work-related state of mind among employees because they are more willing to proactively craft a challenging and resourceful work environment. Contribution or value-add: The findings of this study showed the importance of high-quality relationships with supervisors and were unique in examining the

46 CFR 180.202 - Survival craft-vessels operating on oceans routes.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Survival craft-vessels operating on oceans routes. 180... VESSELS (UNDER 100 GROSS TONS) LIFESAVING EQUIPMENT AND ARRANGEMENTS Number and Type of Survival Craft § 180.202 Survival craft—vessels operating on oceans routes. (a) Each vessel certificated to operate on...

46 CFR 180.208 - Survival craft-vessels operating on rivers routes.

Science.gov (United States)

2010-10-01

... 46 Shipping 7 2010-10-01 2010-10-01 false Survival craft-vessels operating on rivers routes. 180... VESSELS (UNDER 100 GROSS TONS) LIFESAVING EQUIPMENT AND ARRANGEMENTS Number and Type of Survival Craft § 180.208 Survival craft—vessels operating on rivers routes. (a) Except as allowed by paragraphs (c), (d...

Which employees craft their jobs and how? Basic dimensions of personality and employees' job crafting behaviour

NARCIS (Netherlands)

Bipp, T.; Demerouti, E.

2015-01-01

The aim of the current research was to examine to what degree basic personality dimensions serve as determinants of job crafting behaviour and to investigate how this behaviour can be influenced via behavioural intentions. In Study 1, we investigated the relationship of approach and avoidance

Transformational leadership, adaptability, and job crafting : the moderating role of organizational identification.

NARCIS (Netherlands)

Wang, H.; Demerouti, E.; Le Blanc, P.M.

In this study, we aim to explore the link between transformational leadership and job crafting. We predict that transformational leadership will stimulate employee job crafting (seeking resources, seeking challenges, and reducing demands) by increasing their adaptability; but that transformational

Crafting digital media

CERN Document Server

James, Daniel

2010-01-01

Open source software, also known as free software, now offers a creative platform with world-class programs. Just ask the people who have completed high-quality projects or developed popular web 2.0 sites using open source desktop applications. This phenomenon is no longer underground or restricted to techies - there have been more than 61 million downloads of the Audacity audio editor and more than 60 million downloads of the GIMP for Windows photographic tool from SourceForge.net alone. Crafting Digital Media is your foundation course in photographic manipulation, illustration, animation, 3D

The Validity of the School Assessment in the Craft Subject

Directory of Open Access Journals (Sweden)

Antti Hilmola

2016-06-01

Full Text Available In this research project, the validity of the school assessment is examined in the craft subject in Finland’s basic education. The criteria for the school assessment are based on the Finnish Na-tional Core Curriculum (FNCC in which the idea of the Entire Craft (EC is highlighted. How-ever, the discussion as to whether or not the school practice is based on the idea of EC, or whether the teachers are still focused on the technical details of products in reflecting on the pupils’ tool-handling skills, is still an ongoing debate. Learner-centred learning is implicated in EC since the pupils are expected to set goals for the implementation of their own ideating, plan-ning and constructing. And, finally, in such a process, the self-reflection of the implemented out-comes against the goals will take place.  Altogether 73 craft teachers from 59 upper level schools participated in this research project. The pupils’ (N = 982 success was assessed during an EC period using the indicator validated by the previous nation-wide evaluation by the Finn-ish National Board of Education (FNBE. Since the valid school assessment was expected to reflect the success in the Entire Craft Assessment Period (ECAP, the outcomes were assessed against the criteria of the FNCC and compared to the pupils’ school scores. The data was ana-lysed using the Linear Regression Analysis (Enter Method. The central observation was that the pupils’ success in the criteria of the EC do not reflect the 7th grade school scores, in all re-spects. Moreover, the pupils’ success does not reflect the 6th grade school scores. The instruc-tions and supplementary education of the FNCC criteria are needed for craft teachers, especial-ly for class teachers at the lower level. In Finland, also the craft subject is taught by the class teachers at the lower level while, at the upper level, the subject teachers take their place. Ac-cording to the new FNCC, the number of class lessons will be

Marian Roberts, Developing the Craft of Mediation: Reflections on Theory and Practice

Directory of Open Access Journals (Sweden)

Ghislaine M. Lanteigne

2008-10-01

Full Text Available In Developing the Craft of Mediation, Marian Roberts proposes that mediation is akin to a craft with its focus on learning from experience and from others working in the field to develop and master knowledge and skills.

33 CFR 100.916 - Chris Craft Silver Cup Races, Algonac, MI.

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Chris Craft Silver Cup Races, Algonac, MI. 100.916 Section 100.916 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY REGATTAS AND MARINE PARADES SAFETY OF LIFE ON NAVIGABLE WATERS § 100.916 Chris Craft Silver Cup...

Antecedents of daily team job crafting

NARCIS (Netherlands)

Mäkikangas, Anne; Bakker, Arnold B.; Schaufeli, Wilmar B.

2017-01-01

This study investigated potential antecedents of team job crafting defined as the extent to which team members engage together in increasing (social and structural) job resources and challenges, and decreasing hindering job demands. Mindful of the teamwork literature, we hypothesized that individual

Classification of Intact Stability Standards for Dynamically Supported Craft.

Science.gov (United States)

1979-10-01

introduced (by the U.S. Navy) in the late 1950’s. Both military and commercial applications of this type have since proved very successful . From the... successful and safe planing craft have been built for military, commercial and private use. The stability of planing craft, however, is an extremely...forlces. Broaching- [ n I, 111, I ikeA LL) tOCCUr in suvvre following seas, when the Cr aft runs do L tht ! act of ort wav docd slope- ts bovw Ma’ thes

Studies using 27Al MAS NMR of AFm and AFt phases and the formation of Friedel's salt

International Nuclear Information System (INIS)

Jones, M.R.; Macphee, D.E.; Chudek, J.A.; Hunter, G.; Lannegrand, R.; Talero, R.; Scrimgeour, S.N.

2003-01-01

This paper describes the application of the magic angle spinning (MAS) NMR spectroscopy to study the chemical environment of 27 Al-bearing phases in Portland cement-based concrete. A specific methodology is described that allows reliable spectra to be determined for combinations of different types of cements and fillers (in this case, Portland cement, fly ash, slag, silica fume, metakaolin and limestone filler). As well as the study of 'molecular structure' of cement matrix, the paper reviews the mechanism of Friedel's salt formation in cement systems. Mechanisms based on ion exchange of chloride for hydroxide in hydroxy-AF m and on chloride absorption on formation are discussed. Finally, the nature of the chloride/hydrate binding phenomena are described to provide a reasonable robust and fundamental picture of the role different cements can play in the provision of overall concrete durability to chloride ingress from a chemical perspective

26 CFR 1.861-16 - Income from certain craft first leased after December 28, 1980.

Science.gov (United States)

2010-04-01

... 26 Internal Revenue 9 2010-04-01 2010-04-01 false Income from certain craft first leased after... the United States § 1.861-16 Income from certain craft first leased after December 28, 1980. (a) General rule. If a taxpayer— (1) Owns a qualified craft (as defined in paragraph (b) of this section). (2...

46 CFR 24.15-5 - Canadian pleasure craft temporarily using navigable waters of the United States.

Science.gov (United States)

2010-10-01

... 46 Shipping 1 2010-10-01 2010-10-01 false Canadian pleasure craft temporarily using navigable... SECURITY UNINSPECTED VESSELS GENERAL PROVISIONS Equivalents § 24.15-5 Canadian pleasure craft temporarily using navigable waters of the United States. Uninspected Canadian pleasure craft (uninspected vessels...

Formation control of surface marine craft using Lagrange multipliers

DEFF Research Database (Denmark)

Ihle, Ivar-Andre F.; Jouffroy, Jerome; Fossen, Thor I.

We propose a method for constructing control laws for formation control of marine craft using classical tools from analytical mechanics. The control law is based on applying inter-vessel constraint functions which again impose forces on the individual vessels that maintain the given constraints...... on the total system. In this way, a formation can be assembled and stay together when exposed to external forces. A brief comparison with other control designs for a group of marine craft is done. Further, control laws for formation assembling (with dynamic positioning), and formation keeping during...

Aluminum uptake from natural waters by a radiation-grafted membrane

Energy Technology Data Exchange (ETDEWEB)

Bazante-Yamaguishi, Renata; Moura, Eduardo; Manzoli, Jose E.; Geraldo, Aurea B.C., E-mail: ageraldo@ipen.br, E-mail: ryamaguishi@ipen.br [Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

2013-07-01

Styrene grafted, chemically modified polymeric membranes were used to carry off aluminum of drinking water from wells located at Billings dam region. The membranes comprised polymeric substrates of PVC (polyvinylchloride) and PP (polypropylene), which were mutually grafted with gamma radiation. The chemical modification included three basic reaction paths: Friedel-Crafts acylation, 2-methylanisole coupling and a final oxidation; this modification enables aluminum selectivity on the membrane. This chemical process inserts a salicylated derivative bonded onto the aromatic ring of styrene; such molecular arrangement is responsible for complexation of aluminum ions. The aluminum sorption capacity of these membranes was evaluated firstly from an aluminum control solution, where parameters like the ideal pH value for aluminum sorption and the interfering species were studied and correlated to know the best conditions for aluminum uptake. Later, the membranes were used for aluminum remediation of natural waters (real-life samples). The applicability results and limits are then discussed. (author)

Aluminum uptake from natural waters by a radiation-grafted membrane

International Nuclear Information System (INIS)

Bazante-Yamaguishi, Renata; Moura, Eduardo; Manzoli, Jose E.; Geraldo, Aurea B.C.

2013-01-01

Styrene grafted, chemically modified polymeric membranes were used to carry off aluminum of drinking water from wells located at Billings dam region. The membranes comprised polymeric substrates of PVC (polyvinylchloride) and PP (polypropylene), which were mutually grafted with gamma radiation. The chemical modification included three basic reaction paths: Friedel-Crafts acylation, 2-methylanisole coupling and a final oxidation; this modification enables aluminum selectivity on the membrane. This chemical process inserts a salicylated derivative bonded onto the aromatic ring of styrene; such molecular arrangement is responsible for complexation of aluminum ions. The aluminum sorption capacity of these membranes was evaluated firstly from an aluminum control solution, where parameters like the ideal pH value for aluminum sorption and the interfering species were studied and correlated to know the best conditions for aluminum uptake. Later, the membranes were used for aluminum remediation of natural waters (real-life samples). The applicability results and limits are then discussed. (author)

Silica Gel-Mediated Organic Reactions under Organic Solvent-Free Conditions

Directory of Open Access Journals (Sweden)

Satoaki Onitsuka

2012-09-01

Full Text Available Silica gel was found to be an excellent medium for some useful organic transformations under organic solvent-free conditions, such as (1 the Friedel-Crafts-type nitration of arenes using commercial aqueous 69% nitric acid alone at room temperature, (2 one-pot Wittig-type olefination of aldehydes with activated organic halides in the presence of tributyl- or triphenylphosphine and Hunig’s base, and (3 the Morita-Baylis-Hillman reaction of aldehydes with methyl acrylate. After the reactions, the desired products were easily obtained in good to excellent yields through simple manipulation.

Catalytic property of an indium-deposited powder-type material containing silicon and its dependence on the dose of indium nano-particles irradiated by a pulse arc plasma process

Directory of Open Access Journals (Sweden)

Satoru Yoshimura

2017-06-01

Full Text Available Indium nano-particle irradiations onto zeolite powders were carried out using a pulse arc plasma source system. X-ray photoelectron spectroscopic and scanning electron microscopic studies of an indium irradiated zeolite sample revealed that indium nano-particles were successfully deposited on the sample. Besides, the sample was found to be capable of catalyzing an organic chemical reaction (i.e., Friedel-Crafts alkylation. Then, we examined whether or not the catalytic ability depends on the irradiated indium dose, having established the optimal indium dose for inducing the catalytic effect.

Nuevas rutas más respetuosas con el medio ambiente para la síntesi de 2-feniletanol y óxido de estireno

OpenAIRE

Kirm, Ilham

2005-01-01

El 2-feniletanol es uno de los principales componentes del aceite de rosas. Éste posee innumerables propiedades que le hacen apto para su utilización en perfumería, en cosmética, en detergentes, en medicina, etc., así como en alimentación.Industrialmente, este compuesto suele ser sintetizado mediante una tecnología tradicional como es la alquilación de Friedel-Crafts empleando benceno y óxido de etileno como reactivos y cantidades estequiométricas de AlCl3 como catalizador. No obstante, la ut...

Dipolar Quinoidal Acene Analogues as Stable Isoelectronic Structures of Pentacene and Nonacene

KAUST Repository

Shi, Xueliang

2015-10-08

Quinoidal thia-acene analogues, as the respective isoelectronic structures of pentacene and nonacene, were synthesized and an unusual 1,2-sulfur migration was observed during the Friedel-Crafts alkylation reaction. The analogues display a closed-shell quinoidal structure in the ground state with a distinctive dipolar character. In contrast to their acene isoelectronic structures, both compounds are stable because of the existence of more aromatic sextet rings, a dipolar character, and kinetic blocking. They exhibit unique packing in single crystals resulting from balanced dipole-dipole and [C-H⋯π]/[C-H⋯S] interactions.

Difference in Reactivity during Alkylation of 2-(2-Hydroxyaryl)-1,3-indanedione and N-(2-Hydroxyphenyl)phthalimide

Energy Technology Data Exchange (ETDEWEB)

Song, Hyun Nam; Kim, Hyoung Shik; Kim, Jae Nyoung [Chonnam National University, Gwangju (Korea, Republic of)

1999-06-15

Friedel-Crafts type reactions of ninhydrin (1,2,3-indantrione) have been examined by us and other groups. Besides the common arene compounds phenolic compounds could be used to prepare the corresponding 2-(2-hydroxyaryl)-2- hydroxy-1,3-indanedione derivatives such as 1. Recently, we have reported on the unusual formation of benzo[b]indeno[2,1-d]furanone ring system 3 as well as the normally expected 2 during alkylation of 2-(2-hydroxyaryl)- 2-hydroxy-1,3-indanedione derivative 1 as shown in Scheme 1

Legal status of crew members on pleasure craft and vessels used in nautical tourism

Directory of Open Access Journals (Sweden)

Giovanni Marchiafava

2018-02-01

Full Text Available The paper aims at examining the issues related to the legal status of crew members of pleasure craft and vessels used in nautical tourism from an Italian perspective. Firstly, the definition of crew and its composition on pleasure craft and vessels is examined. Additionally, the legal regime of crew members together with the crew on-board documentation, is discussed. Furthermore, the main similarities and dissimilarities of the crew regime according to the type of pleasure craft and vessel and their use, as well as, the on-board services, is dealt with. Finally, the issue related to the legal classification of ‘’guests’’, undertaking complementary on-board services of pleasure craft and vessels is considered.

Job crafting, work engagement, and psychological distress among Japanese employees: a cross-sectional study.

Science.gov (United States)

Sakuraya, Asuka; Shimazu, Akihito; Eguchi, Hisashi; Kamiyama, Kimika; Hara, Yujiro; Namba, Katsuyuki; Kawakami, Norito

2017-01-01

Job crafting, an employee-initiated job design/redesign, has become important for employees' well-being. However, most studies on the relationship between job crafting and employees' well-being have been conducted in western countries; thus, it is unclear whether job crafting can be effectively applied to Asian cultures, such as Japan, which emphasizes group harmony. The aim of this study was to examine the cross-sectional associations of self-reported job crafting with work engagement and psychological distress among employees in Japan. A questionnaire survey through the internet was conducted among all employees of a manufacturing company in Japan. We analyzed the data from 894 respondents, all employees with regular employment. Job crafting, work engagement, and psychological distress were assessed using the Japanese version of the Job Crafting Questionnaire, the Japanese version of the Utrecht Work Engagement Scale (UWES), and the Brief Job Stress Questionnaire (BJSQ), respectively. Hierarchical multiple regression showed that increasing structural job resources, social job resources, and challenging job demands was significantly and positively associated with work engagement ( β  = 0.31, p  engagement and lower psychological distress. In addition, increasing social job resources and challenging job demands are also associated with higher work engagement.

Alternative theoretical and methodological approaches for exploring higher education in Art and Crafts

Directory of Open Access Journals (Sweden)

Marte Sørebø Gulliksen

2009-12-01

Full Text Available This article presents and discusses approaches for exploring higher education in Art and Crafts. The concepts exploring versus research and the different foci in an insider perspective versus an outsider perspective introduces the theme. An insider perspective is said to be a useful starting point for inquiry, referring to Frayling’s trichotomy research into, research on and research through from 1993. The field of higher education in Art and Crafts education is shortly presented as comprising two main areas of knowledge: knowledge of education, and knowledge about the different subject areas within Art and Crafts. Both theory and practice are a part of these areas of knowledge. As higher education in Art and Crafts is a making profession, the most prominent challenge when exploring this today is thus said to be to develop research based knowledge on Education in Art and Crafts as a making discipline.  Two keywords are deemed to be useful in approaching this theme: Mode 2 knowledge production and transdisciplinarity. The article concludes with describing specific ways of doing this today from within the context of application. Two examples of large research projects in Scandinavia are presented as examples of such projects.

Computer Technology-Integrated Projects Should Not Supplant Craft Projects in Science Education

Science.gov (United States)

Klopp, Tabatha J.; Rule, Audrey C.; Schneider, Jean Suchsland; Boody, Robert M.

2014-01-01

The current emphasis on computer technology integration and narrowing of the curriculum has displaced arts and crafts. However, the hands-on, concrete nature of craft work in science modeling enables students to understand difficult concepts and to be engaged and motivated while learning spatial, logical, and sequential thinking skills. Analogy…

“Making our job hospitable” – Assessment of job-crafting behavior among dental academic faculty in South India

Directory of Open Access Journals (Sweden)

V Siva Kalyan

2018-01-01

Full Text Available Introduction: Employees are regularly offered opportunities to make their work more appealing and rewarding. These opportunities might be as simple as making fine changes to their daily tasks to boost happiness and to connect with more people at vocation. Hence, an attempt is made to assess job-crafting behavior among the dental academic faculty. Materials and Methods: A cross-sectional study was conducted among dental academic faculty from five dental colleges. Job Crafting Questionnaire (JCQ was used to assess the job-crafting behavior. Mean scores were calculated for different domains of JCQ. Gender differences were analyzed using Student's “t-” test and one-way ANOVA to test the difference between different academic positions of the faculty members. Results: A total of 228 dental faculty members with a mean age of 34.43 ± 6.13 years participated in the study. The mean value of job-crafting behavior was found to be highest among female faculty (60.07 ± 8.38 and professors (61.35 ± 8.30. Male faculty scored higher in task-crafting domain and female faculty scored higher in both cognitive- and relational-crafting domains. The professors scored highest in all the three domains of job-crafting behavior as compared to that of senior lecturers and readers. Conclusion: Job crafting is an effectual workplace intervention, where employees assume an active role in shaping their work experience to enhance their job satisfaction and well-being. The overall score of job-crafting behavior was found to be highest among both professors and female faculty members. Male faculty members scored higher in task-crafting domain. With regard to individual domains, the participants scored highest in cognitive crafting followed by task and relational crafting.

A Study of the Polycondensation of (Tetrahydroxy(TetraarylCyclotetrasiloxanes under Equilibrium and Non-Equilibrium Conditions in the Presence and Absence of Montmorillonite

Directory of Open Access Journals (Sweden)

Nataliya N. Makarova

2018-04-01

Full Text Available Oligo- and polycyclosiloxanes were obtained by the polycondensation of (tetrahydroxy(tetraarylcyclotetrasiloxanes in equilibrium and non-equilibrium conditions in the presence and absence of montmorillonite (MMT. Their composition and the structures of their components were investigated by infrared (IR spectroscopy, 29Si nuclear magnetic resonance (NMR spectroscopy, atmospheric pressure chemical ionization (APCI mass spectrometry, powder X-ray diffraction (XRD, and gel-penetrating chromatography (GPC. Also, a comparison of polymers formed in the presence of MMT and via anionic polymerization was performed showing differences in their structures.

Cooking and Hammering: Primary School Pupils' Concepts of Their Craft Skills

Science.gov (United States)

Müürsepp, Mare; Kikkull, Andry

2014-01-01

The aim of the study is to clear the significance of craft skills for the pupils in age nine and twelve years. More than 200 pupils were asked to define, what are the most important skills for the pupils of their age. The results bring out that category of the skills related to craft subject is of the most presented categories in pupils' self…

Application of CRAFT in two-dimensional NMR data processing.

Science.gov (United States)

Krishnamurthy, Krish; Sefler, Andrea M; Russell, David J

2017-03-01

Two-dimensional (2D) data are typically truncated in both dimensions, but invariably and severely so in the indirect dimension. These truncated FIDs and/or interferograms are extensively zero filled, and Fourier transformation of such zero-filled data is always preceded by a rapidly decaying apodization function. Hence, the frequency line width in the spectrum (at least parallel to the evolution dimension) is almost always dominated by the apodization function. Such apodization-driven line broadening in the indirect (t 1 ) dimension leads to the lack of clear resolution of cross peaks in the 2D spectrum. Time-domain analysis (i.e. extraction of frequency, amplitudes, line width, and phase parameters directly from the FID, in this case via Bayesian modeling into a tabular format) of NMR data is another approach for spectral resonance characterization and quantification. The recently published complete reduction to amplitude frequency table (CRAFT) technique converts the raw FID data (i.e. time-domain data) into a table of frequencies, amplitudes, decay rate constants, and phases. CRAFT analyses of time-domain data require minimal or no apodization prior to extraction of the four parameters. We used the CRAFT processing approach for the decimation of the interferograms and compared the results from a variety of 2D spectra against conventional processing with and without linear prediction. The results show that use of the CRAFT technique to decimate the t 1 interferograms yields much narrower spectral line width of the resonances, circumventing the loss of resolution due to apodization. Copyright © 2016 John Wiley & Sons, Ltd. Copyright © 2016 John Wiley & Sons, Ltd.

The nature of creativity in craft

DEFF Research Database (Denmark)

Glaveanu, Vlad Petre

2012-01-01

The present article explores the nature of creativity in craft and does so with the help of a case study of traditional Easter egg decoration. It starts by positioning the domain of folk art in relation to fine art and within a larger category of everyday life forms of creative expression...

Microencapsulation of butyl stearate as a phase change material by interfacial polycondensation in a polyurea system

Energy Technology Data Exchange (ETDEWEB)

Chen Liang [College of Material Science and Engineering, Nanjing University of Technology, Nanjing 210009 (China)], E-mail: doseng_1982@hotmail.com; Xu Lingling; Shang Hongbo; Zhang Zhibin [College of Material Science and Engineering, Nanjing University of Technology, Nanjing 210009 (China)

2009-03-15

For the last 20 years, microencapsulated phase change materials (MicroPCMs), which combine microencapsulation technology and phase change material, have been attracted more and more interest. By overcoming some limitations of the PCMs, the MicroPCMs improve the efficiency of PCMs and make it possible to apply PCMs in many areas. In this experiment, polyurea microcapsules containing phase change materials were prepared using interfacial polycondensation method. Toluene-2,4-diisocyanate (TDI) and ethylenediamine (EDA) were chosen as monomers. Butyl stearate was employed as a core material. The MicroPCMs' properties have been characterized by dry weight analysis, differential scanning calorimetry, Fourier transform IR spectra analysis and optical microscopy. The results show that the MicroPCMs were synthesized successfully and that, the phase change temperature was about 29 deg. C, the latent heat of fusion was about 80 J g{sup -1}, the particle diameter was 20-35 {mu}m.

Microencapsulation of butyl stearate as a phase change material by interfacial polycondensation in a polyurea system

International Nuclear Information System (INIS)

Chen Liang; Xu Lingling; Shang Hongbo; Zhang Zhibin

2009-01-01

For the last 20 years, microencapsulated phase change materials (MicroPCMs), which combine microencapsulation technology and phase change material, have been attracted more and more interest. By overcoming some limitations of the PCMs, the MicroPCMs improve the efficiency of PCMs and make it possible to apply PCMs in many areas. In this experiment, polyurea microcapsules containing phase change materials were prepared using interfacial polycondensation method. Toluene-2,4-diisocyanate (TDI) and ethylenediamine (EDA) were chosen as monomers. Butyl stearate was employed as a core material. The MicroPCMs' properties have been characterized by dry weight analysis, differential scanning calorimetry, Fourier transform IR spectra analysis and optical microscopy. The results show that the MicroPCMs were synthesized successfully and that, the phase change temperature was about 29 deg. C, the latent heat of fusion was about 80 J g -1 , the particle diameter was 20-35 μm

Microencapsulation of butyl stearate as a phase change material by interfacial polycondensation in a polyurea system

Energy Technology Data Exchange (ETDEWEB)

Liang, Chen; Lingling, Xu; Hongbo, Shang; Zhibin, Zhang [College of Material Science and Engineering, Nanjing University of Technology, Nanjing 210009 (China)

2009-03-15

For the last 20 years, microencapsulated phase change materials (MicroPCMs), which combine microencapsulation technology and phase change material, have been attracted more and more interest. By overcoming some limitations of the PCMs, the MicroPCMs improve the efficiency of PCMs and make it possible to apply PCMs in many areas. In this experiment, polyurea microcapsules containing phase change materials were prepared using interfacial polycondensation method. Toluene-2,4-diisocyanate (TDI) and ethylenediamine (EDA) were chosen as monomers. Butyl stearate was employed as a core material. The MicroPCMs' properties have been characterized by dry weight analysis, differential scanning calorimetry, Fourier transform IR spectra analysis and optical microscopy. The results show that the MicroPCMs were synthesized successfully and that, the phase change temperature was about 29 C, the latent heat of fusion was about 80 J g{sup -1}, the particle diameter was 20-35 {mu}m. (author)

33 CFR 150.503 - What are the time interval requirements for maintenance on survival craft falls?

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false What are the time interval requirements for maintenance on survival craft falls? 150.503 Section 150.503 Navigation and Navigable Waters... maintenance on survival craft falls? (a) Each fall used in a launching device for survival craft or rescue...

Sustainable Innovation of Glass Design and Craft

DEFF Research Database (Denmark)

Sparre-Petersen, Maria

2014-01-01

Barely any research has been made into the implementation of sustainable principles in glass design and craft. A common tendency among students and practitioners is to consider it problematic if not impossible to develop a “truly sustainable practice”. Generally glass crafts people and glass...... designers aim to explore new aesthetic possibilities for the material and see sustainability as a hindrance for aesthetic freedom. On the contrary the field of design has strong and growing emphasis on sustainable development. Fry (2009) argues that what he defines as sustain-ability is not an end goal...... but an ongoing process of re-directing the way we design our world and thereby our future. This approach along with further research into sustainable development within the field of design and combined with material specific methodologies may reveal new possibilities for sustainable as well as aesthetic...

Craft Arts and Tourism in Ceramic Art Village of Kasongan in Yogyakarta

Directory of Open Access Journals (Sweden)

sp gustami

2014-03-01

Full Text Available Yogyakarta is one of Indonesia’s major tourist destinations. This is due to its nature, interesting, unique and fantastic ancient cultural and art sites. Creative industries and the ceramic crafts play an important role in the development of tourism in Yogyakarta. In this paper, ethnographic approach is used to describe the creative process and the ceramic crafts industry in the village of Kasongan, Yogyakarta. Based on the results of the field research, the authors conclude that the ceramic crafts tourist village of Kasongan is moving toward greater commoditization whereby the ceramics centre is now more oriented towards meeting the needs of tourist industry in Yogyakarta. Due to extensive interaction and the positive response from the general public, ceramic crafts practitioners of Kasongan experience unique and characteristic creative period. The crafters manage to negotiate between the old and the new values, in the village one can find both traditional pottery and new, creative and innovative ceramic products of export quality. Today, Kasongan is a trade mark ceramic tourism village that is entering the global era.

Different types of employee well-being across time and their relationships with job crafting.

Science.gov (United States)

Hakanen, Jari J; Peeters, Maria C W; Schaufeli, Wilmar B

2018-04-01

We used and integrated the circumplex model of affect (Russell, 1980) and the conservation of resources theory (Hobfoll, 1998) to hypothesize how various types of employee well-being, which can be differentiated on theoretical grounds (i.e., work engagement, job satisfaction, burnout, and workaholism), may differently predict various job crafting behaviors (i.e., increasing structural and social resources and challenging demands, and decreasing hindering demands) and each other over time. At Time 1, we measured employee well-being, and 4 years later at Time 2, job crafting and well-being, using a large sample of Finnish dentists (N = 1,877). The results of structural equation modeling showed that (a) work engagement positively predicted both types of increasing resources and challenging demands and negatively predicted decreasing hindering demands; (b) workaholism positively predicted increasing structural resources and challenging demands; (c) burnout positively predicted decreasing hindering demands and negatively predicted increasing structural resources, whereas (d) job satisfaction did not relate to job crafting over time; and (e) work engagement positively influenced job satisfaction and negatively influenced burnout, whereas (f) workaholism predicted burnout after controlling for baseline levels. Thus, work engagement was a stronger predictor of future job crafting and other types of employee well-being than job satisfaction. Although workaholism was positively associated with job crafting, it also predicted burnout. We conclude that the relationship between job crafting and employee well-being may be more complex than assumed, because the way in which employees will craft their jobs in the future seems to depend on how they currently feel. (PsycINFO Database Record (c) 2018 APA, all rights reserved).

Integrated Design of Semi-Displacement Patrol Crafts

National Research Council Canada - National Science Library

Gillespy, Andrew J

2008-01-01

... of any one change on the entire system. The initial design of smaller patrol craft is especially difficult due to the lack of design tools able to deal with ships of small size operating in the semi-planing region...

The impact of job crafting on job demands, job resources, and well-being

NARCIS (Netherlands)

Tims, M.; Bakker, A.B.; Derks, D.

2013-01-01

This longitudinal study examined whether employees can impact their own well-being by crafting their job demands and resources. Based on the Job Demands-Resources model, we hypothesized that employee job crafting would have an impact on work engagement, job satisfaction, and burnout through changes

A crafting of potentials

DEFF Research Database (Denmark)

Kilbourn, Kyle

In the movement from understanding the past towards creating the future design anthropology, as a discipline, will turn from one with archival qualities to one endowed with potentials for change. One challenge facing design anthropology is how to show relevance for theory generation while also in......-as is complemented by designing for as design anthropologists stage design workshops, span knowledge traditions, and make design moves. Reflecting on my own research process, I trace a few research tools that underline the craft of design anthropology....

33 CFR 150.515 - What are the requirements for weight testing of newly installed or relocated craft?

Science.gov (United States)

2010-07-01

... weight testing of newly installed or relocated craft? 150.515 Section 150.515 Navigation and Navigable... testing of newly installed or relocated craft? (a) The operator must perform installation weight testing... (a) of this section, when survival crafts are relocated to another deepwater port. ...

Investigations of Thickness Requirement in DNV Rules for High-Speed Craft

DEFF Research Database (Denmark)

Pedersen, Preben Terndrup; Zhang, Shengming

1997-01-01

Simple formulas for determining impact strength of high-speed craft collisions with floating objects are given in this note. Thereby the minimum mass of a floating object that just ruptures the shell plating is predicted. The minimum thickness requirements of DNV rules for aluminiumcrafts and GRP...... single skin crafts can be converted to critical impact energy and minimum object mass. Some comparisons show an acceptable agreement between present method and DNV test results....

Theoretical multi-physics approaches to solid-solution strengthening of Al

Energy Technology Data Exchange (ETDEWEB)

Ma, Duancheng; Friak, Martin; Raabe, Dierk; Neugebauer, Joerg [Max-Planck-Institut fuer Eisenforschung GmbH, Duesseldorf (Germany)

2009-07-01

The strengthening of soft metallic materials has a long tradition and is an important metallurgical topic since the time when ancient smiths forged the first swords. Intense materials research revealed a combination of three mechanisms as decisive for solid-solution strengthening phenomena: (i) the size mismatch of components (Mott and Nabarro's parelastic concept), (ii) the elastic modulus mismatch of atoms (Fleischer's dielastic contribution), and (iii) the concentration of solutes (statistical concept of Friedel and Labusch). Combining density functional theory calculations and linear-elasticity theory, the key parameters that are essential for the classical strengthening theories are determined in order to test them and identify their possible validity limits. The strengthening of fcc aluminium is chosen as an example and a series of binary systems Al-X (with X=Ca,Sr,Ir,Li,Mg,Cu) was considered. Comparing our results with those obtained by applying classical theories we find clear deviations. These deviations originate from non-classical lattice distortions due to the size mismatch of solute atoms in their first coordination shells.

Use your eyes - metallographic versus superficial traces of the crafting of Bronze Age ornaments

DEFF Research Database (Denmark)

Nørgaard, Heide Wrobel

and superficial archaeological examinations can be used to understand prehistoric craft. Furthermore, it will show that with an intensive knowledge about previous scientific investigations the superficial traces preserved can reveal a great amount of information and could talk for themselves. Taking as an example...... the early and middle Bronze Age bronze ornaments from North Germany, superficial traces of the metal crafting process, visible with the naked eye, will be compared with metallographic images. The aim of this presentation is to give an overview over the crafting traces everybody could see (with a bit...

Tracking Porters: Learning the Craft of Techno-Anthropology.

Science.gov (United States)

Bruun, Maja Hojer; Krause-Jensen, Jakob; Saltofte, Margit

2015-01-01

Anthropology attempts to gain insight into people's experiential life-worlds through long-term fieldwork. The quality of anthropological knowledge production, however, does not depend solely on the duration of the stay in the field, but also on a particular way of seeing social situations. The anthropological perspective is grounded in socio-cultural theory and forged by a distinct relativist or contextualist epistemological stance. The point is to understand events, concepts and phenomena from the insiders' point of view and to show how this view relates to the particular social and cultural context. In this chapter, we argue that although anthropology has its specific methodology - including a myriad of ethnographic data-gathering tools, techniques, analytical approaches and theories - it must first and foremost be understood as a craft. Anthropology as craft requires a specific 'anthropological sensibility' that differs from the standardized procedures of normal science. To establish our points we use an example of problem-based project work conducted by a group of Techno-Anthropology students at Aalborg University, we focus on key aspects of this craft and how the students began to learn it: For two weeks the students followed the work of a group of porters. Drawing on anthropological concepts and research strategies the students gained crucial insights about the potential effects of using tracking technologies in the hospital.

The Art and Craft of Science

Science.gov (United States)

Root-Bernstein, Robert; Root-Bernstein, Michele

2013-01-01

Walter Alvarez, a doctor and physiologist of some renown, decided to send his scientifically talented son, Luis, to an arts and crafts school where Luis took industrial drawing and woodworking instead of calculus. Luis Alvarez won the Nobel Prize in physics in 1968. Einstein was certainly not a standout in his mathematics and physics classes. Yet…

Crafted - meisterdatud / Mihkel Tüür

Index Scriptorium Estoniae

Tüür, Mihkel, 1976-

2012-01-01

12. Alvar Aalto sümpoosion Jyväskyläs 10.-12. augustil 2012 teemal "Crafted". Kuraator Pekka Heikkinen. Pikemalt Mohsen Mostafavi ettekandest "Arhitektuur on materiaalne" ja Jürg Conzetti ettekandest "Strukturaalse tava jätkamine". Autori sõnul jäi kõlama mõte, et meisterlikult ehitatud maja saab olla ainus arhitektuuri tegelik mõõde

Job crafting in changing organizations: Antecedents and implications for exhaustion and performance.

Science.gov (United States)

Petrou, Paraskevas; Demerouti, Evangelia; Schaufeli, Wilmar B

2015-10-01

The present study addressed employee job crafting behaviors (i.e., seeking resources, seeking challenges, and reducing demands) in the context of organizational change. We examined predictors of job crafting both at the organizational level (i.e., perceived impact of the implemented changes on the working life of employees) and the individual level (i.e., employee willingness to follow the changes). Job crafting behaviors were expected to predict task performance and exhaustion. Two-wave longitudinal data from 580 police officers undergoing organizational changes were analyzed with structural equation modeling. Findings showed that the degree to which changes influence employees' daily work was linked to reducing demands and exhaustion, whereas employee willingness to change was linked to seeking resources and seeking challenges. Furthermore, while seeking resources and seeking challenges were associated with high task performance and low exhaustion respectively, reducing demands seemed to predict exhaustion positively. Our findings suggest that job crafting can act as a strategy of employees to respond to organizational change. While seeking resources and seeking challenges enhance employee adjustment and should be encouraged by managers, reducing demands seems to have unfavorable implications for employees. (c) 2015 APA, all rights reserved).

Rationalizing Cooperation: Moroccan Craft, Politics, and Education

Science.gov (United States)

Nicholas, Claire

2018-01-01

State attempts to rationalize Moroccan craft education reflect the ambivalent status of traditional knowledge in a modern economy. Female artisans, recently organized as a cooperative, navigate this ambivalence in a weaving "theory" class and in their "occupation" of the cooperative structure itself. During performances of…

Design and Craft Education in Iceland, Pedagogical Background and Development: A Literature Review

Science.gov (United States)

Olafsson, Brynjar; Thorsteinsson, Gisli

2009-01-01

Sloyd pedagogy was introduced towards the close of the 18th century to Icelandic educators. Subsequently craft was established as a specific subject aimed at general education. In the beginning craft was called "school industry," to distinguish it from "home industry" whose aim was to help homes to be self-sufficient for…

Preservation of Cultural Heritage Embodied in Traditional Crafts in the Developing Countries. A Case Study of Pakistani Handicraft Industry

Directory of Open Access Journals (Sweden)

Yongzhong Yang

2018-04-01

Full Text Available Cultural heritage embodied in traditional crafts is an integral part of any nation which reflects the culture and tradition of a particular region. Although the importance of handicraft has been widely recognized, the literature regarding preservation of traditional craft is scarce. The present paper aimed to explore and identify issues faced by traditional craftsmanship in developing countries and to address those issues in order to contribute to the sustainability of traditional craft heritage and ensure continuous transmission of craft skills and knowledge from generation to generation. Our study identified several key issues which poses substantial challenges to the preservation of traditional craft heritage in developing countries. In order to add empirical evidence, we examined the case of Pakistani handicraft industry that provided further understanding of highlighted issues which traditional craft heritage face. We have suggested some policies to promote, develop and preserve the traditional craft heritage. The significance of these policy suggestions is underlined with the case study of Pakistan.

A Hierarchically Porous Hypercrosslinked and Novel Quinone based Stable Organic Polymer Electrode for Lithium-Ion Batteries

International Nuclear Information System (INIS)

Ahmad, Aziz; Meng, Qinghai; Melhi, Saad; Mao, Lijuan; Zhang, Miao; Han, Bao-Hang; Lu, Kun; Wei, Zhixiang

2017-01-01

Highlights: •A novel hypercrosslinked Poly-Pillar[5]quinone (Poly-P5Q) polymer has been prepared and applied as electrode material in Li-ion batteries. •The novel synthetic route of Poly-P5Q was introduced by the oxidation of Poly-Dimethoxypillar[5]arene. •A Friedel-Crafts reaction was employed to prepare a novel Poly-P5Q as organic cathode material for lithium-ion batteries. -- Abstract: In the recent years, organic electrode materials have attracted tremendous attention and becoming promising electrode candidates for the green and sustainable lithium-ion batteries. A novel hypercrosslinked Poly-Pillar[5]quinone (Poly-P5Q) polymer was prepared and applied as electrode material in Li-ion batteries. Poly-P5Q is the oxidized form of Poly-Dimethoxypillar[5]arene (Poly-DMP5A) which was obtained from the condensation of dimethoxypillar[5]arene and formaldehyde dimethyl acetal using Friedel-Crafts reaction. The prepared materials were characterized by 13 C solid state NMR, FTIR, SEM, EDX and TGA analysis. The Poly-P5Q cathode showed an initial discharge capacity up to 105 mAh g −1 whereas it retained 82.3% of its initial discharge capacity after 100 charge-discharge cycles at a current speed of 100 mA g −1 in the potential window between 1.75 to 3.25 V. In future, research in this direction will provide great insight for the development of novel polymers from various small organic molecules as a stable and high performance electrode materials for green lithium-ion batteries.

Job crafting at the team and individual level: Implications for work engagement and performance

NARCIS (Netherlands)

Tims, M.; Bakker, A.B.; Derks, D.; Rhenen, van W.

2013-01-01

Previous research suggests that employee job crafting is positively related to job performance through employee work engagement. The present study expands this individual-level perspective to the team level by hypothesizing that team job crafting relates positively to team performance through team

Analysis on online word-of-mouth of customer satisfaction in cultural and creative industries of Taiwan: using crafts as an example

Science.gov (United States)

Tsai, Li-Fen; Shaw, Jing-Chi; Wang, Pei-Wen; Shih, Meng-Long; Yang, Min-Chieh

2011-10-01

This study aims to analyze customers' online word-of-mouth for crafts in Cultural and Creative Industries of Taiwan, and extracts articles from Yahoo and Wretch Blogs by the online writing mining technique. The research scope is from Jan. 1, 2008 to Dec. 31, 2010. The subjects include 2457 valid articles on customers' online word-of-mouth regarding the craft industry of Taiwan. Findings demonstrate that, regarding online word-of-mouth, the most important word-of-mouth items of ceramics, stone craft, wood craft manufacturing, and metal craft is decoration and display of surroundings; while brand is valued in glass craft; and the most important item for consumers of paper craft is cultural characteristics of handicrafts.

Job crafting in schools for special education: A qualitative analysis [Job crafting in het speciaal onderwijs: Een kwalitatieve analyse

NARCIS (Netherlands)

Wingerden, J. van; Derks, D.; Bakker, A.B.; Dorenbosch, L.

2013-01-01

In this article we discuss the design and qualitative (process) evaluation of a job crafting intervention among employees at three Dutch schools for special education. In a period of 1.5 months, fifty employees participated in a group-based training intervention that addressed individual's job

25 CFR 309.24 - How will statements about Indian origin of art or craft products be interpreted?

Science.gov (United States)

2010-04-01

... 25 Indians 2 2010-04-01 2010-04-01 false How will statements about Indian origin of art or craft products be interpreted? 309.24 Section 309.24 Indians INDIAN ARTS AND CRAFTS BOARD, DEPARTMENT OF THE INTERIOR PROTECTION OF INDIAN ARTS AND CRAFTS PRODUCTS § 309.24 How will statements about Indian origin of...

Emotions in Risk Assessment and Decision Making Processes During Craft Practice

Directory of Open Access Journals (Sweden)

Camilla Groth

2015-12-01

Full Text Available Traditionally subjective experiences and emotions have been overlooked in the practice of scientific research. In the field of design and craft research too, feelings and emotions have been considered as interfering with the rigour of research. However, as a result of findings in neuroscience, a new understanding has emerged, providing emotions a central role in risk assessment and decision making processes. This has implications also for how we understand craft practice. In this practice-led research, a craft practitioner analysed five video-recordings of herself while throwing clay blindfolded. The researcher-practitioner specifically studied critical incidents in the throwing process and made a detailed analysis of how sensory experiences and emotions guided her in risk assessment, decision making, and problem solving during the clay-throwing sessions. She found that her tactile experience gave her important clues on the condition of the material and its consequent possibilities at different stages. These experiences in turn affected her emotions in either positive or negative ways, affecting her risk assessment, decision making, and problem solving activities. This research has shown that sensory experiences and emotions influence the craft making process and are thus important elements in the expertise of the craftsperson. The role of such emotions remains to be studied further in the expertise of researchers in general.

Arts and Crafts Classes in Years I–III, Based on Methods Featuring Pupils’ Practical Activities

OpenAIRE

Piwowarska, Ewa

2016-01-01

The issue to be analysed here concerns teachers’ planning of arts and crafts classes in Years I–III, with specific reference to methods featuring pupils’ practical activities. A theoretical part briefly presents the concepts involved in teaching a subject that was initially defined as drawing, then as arts and crafts education, and finally as arts and crafts classes. It points out the factors that influence the process of stimulating pupils’ artistic activities. The technique used in the cour...

The Development of Indian and Eskimo Art and Crafts in the Far North.

Science.gov (United States)

Phillips, R. A. J.; And Others

The focus of the conference, "The Development of Indian and Eskimo Art and Crafts in the Far North," was the creation of a market for reputable Indian and Eskimo art work on an economically sound basis which would benefit both the native artists and the Canadian economy. Two governmental reports, "Northern Arts and Crafts" and…

D Digital Simulation of Minnan Temple Architecture CAISSON'S Craft Techniques

Science.gov (United States)

Lin, Y. C.; Wu, T. C.; Hsu, M. F.

2013-07-01

Caisson is one of the important representations of the Minnan (southern Fujian) temple architecture craft techniques and decorative aesthetics. The special component design and group building method present the architectural thinking and personal characteristics of great carpenters of Minnan temple architecture. In late Qing Dynasty, the appearance and style of caissons of famous temples in Taiwan apparently presented the building techniques of the great carpenters. However, as the years went by, the caisson design and craft techniques were not fully inherited, which has been a great loss of cultural assets. Accordingly, with the caisson of Fulong temple, a work by the well-known great carpenter in Tainan as an example, this study obtained the thinking principles of the original design and the design method at initial period of construction through interview records and the step of redrawing the "Tng-Ko" (traditional design, stakeout and construction tool). We obtained the 3D point cloud model of the caisson of Fulong temple using 3D laser scanning technology, and established the 3D digital model of each component of the caisson. Based on the caisson component procedure obtained from interview records, this study conducted the digital simulation of the caisson component to completely recode and present the caisson design, construction and completion procedure. This model of preserving the craft techniques for Minnan temple caisson by using digital technology makes specific contribution to the heritage of the craft techniques while providing an important reference for the digital preservation of human cultural assets.

33 CFR 125.15 - Access to waterfront facilities, and port and harbor areas, including vessels and harbor craft...

Science.gov (United States)

2010-07-01

..., and port and harbor areas, including vessels and harbor craft therein. 125.15 Section 125.15....15 Access to waterfront facilities, and port and harbor areas, including vessels and harbor craft....09 to those waterfront facilities, and port and harbor areas, including vessels and harbor craft...

How Valuable is a Well-Crafted Design and Name Brand?

DEFF Research Database (Denmark)

Kristensen, Tore; Gabrielsen, Gorm; Zaichkowsky, Judith

2012-01-01

Preferences for similarly designed consumer products, evaluated blind and branded and also with and without prices, were tested in a consumer setting. The consumer's perceptual experience led to preference of the well-crafted high-priced option. This preference was enhanced by priming consumers w...... of choices using measures of inherent design acumen, prior experience, and purchasing behavior were largely unsuccessful.......Preferences for similarly designed consumer products, evaluated blind and branded and also with and without prices, were tested in a consumer setting. The consumer's perceptual experience led to preference of the well-crafted high-priced option. This preference was enhanced by priming consumers...

Mycotoxin profiling of 1000 beer samples with a special focus on craft beer.

Directory of Open Access Journals (Sweden)

Jeroen Peters

Full Text Available Currently beer is booming, mainly due to the steady rise of craft breweries worldwide. Previous surveys for occurrence of mycotoxins in beer, were mainly focussed on industrial produced beer. The present survey reports the presence of mycotoxins in craft beer and how this compares to industrial produced beer. More than 1000 beers were collected from 47 countries, of which 60% were craft beers. A selection of 1000 samples were screened for the presence of aflatoxin B1, ochratoxin A (OTA, zearalenone (ZEN, fumonisins (FBs, T-2 and HT-2 toxins (T-2 and HT-2 and deoxynivalenol (DON using a mycotoxin 6-plex immunoassay. For confirmatory analysis, a liquid chromatography tandem mass spectrometry (LC-MS/MS method was developed and applied. The 6-plex screening showed discrepancies with the LC-MS/MS analysis, possibly due to matrix interference and/or the presence of unknown mycotoxin metabolites. The major mycotoxins detected were DON and its plant metabolite deoxynivalenol-3-β-D-glucopyranoside (D3G. The 6-plex immunoassay reported the sum of DON and D3G (DON+D3G contaminations ranging from 10 to 475 μg/L in 406 beers, of which 73% were craft beers. The popular craft beer style imperial stout, had the highest percentage of samples suspected positive (83% with 29% of all imperial stout beers having DON+D3G contaminations above 100 μg/L. LC-MS/MS analysis showed that industrial pale lagers from Italy and Spain, predominantly contained FBs (3-69 μg/L. Besides FBs, African traditional beers also contained aflatoxins (0.1-1.2 μg/L. The presence of OTA, T-2, HT-2, ZEN, β-zearalenol, 3/15-acetyl-DON, nivalenol and the conjugated mycotoxin zearalenone 14-sulfate were confirmed in some beers. This study shows that in 27 craft beers, DON+D3G concentrations occurred above (or at the Tolerable Daily Intake (TDI. Exceeding the TDI, may have a health impact. A better control of brewing malts for craft beer, should be put in place to circumvent this potential

Mycotoxin profiling of 1000 beer samples with a special focus on craft beer.

Science.gov (United States)

Peters, Jeroen; van Dam, Ruud; van Doorn, Ronald; Katerere, David; Berthiller, Franz; Haasnoot, Willem; Nielen, Michel W F

2017-01-01

Currently beer is booming, mainly due to the steady rise of craft breweries worldwide. Previous surveys for occurrence of mycotoxins in beer, were mainly focussed on industrial produced beer. The present survey reports the presence of mycotoxins in craft beer and how this compares to industrial produced beer. More than 1000 beers were collected from 47 countries, of which 60% were craft beers. A selection of 1000 samples were screened for the presence of aflatoxin B1, ochratoxin A (OTA), zearalenone (ZEN), fumonisins (FBs), T-2 and HT-2 toxins (T-2 and HT-2) and deoxynivalenol (DON) using a mycotoxin 6-plex immunoassay. For confirmatory analysis, a liquid chromatography tandem mass spectrometry (LC-MS/MS) method was developed and applied. The 6-plex screening showed discrepancies with the LC-MS/MS analysis, possibly due to matrix interference and/or the presence of unknown mycotoxin metabolites. The major mycotoxins detected were DON and its plant metabolite deoxynivalenol-3-β-D-glucopyranoside (D3G). The 6-plex immunoassay reported the sum of DON and D3G (DON+D3G) contaminations ranging from 10 to 475 μg/L in 406 beers, of which 73% were craft beers. The popular craft beer style imperial stout, had the highest percentage of samples suspected positive (83%) with 29% of all imperial stout beers having DON+D3G contaminations above 100 μg/L. LC-MS/MS analysis showed that industrial pale lagers from Italy and Spain, predominantly contained FBs (3-69 μg/L). Besides FBs, African traditional beers also contained aflatoxins (0.1-1.2 μg/L). The presence of OTA, T-2, HT-2, ZEN, β-zearalenol, 3/15-acetyl-DON, nivalenol and the conjugated mycotoxin zearalenone 14-sulfate were confirmed in some beers. This study shows that in 27 craft beers, DON+D3G concentrations occurred above (or at) the Tolerable Daily Intake (TDI). Exceeding the TDI, may have a health impact. A better control of brewing malts for craft beer, should be put in place to circumvent this potential problem.

SUSTAINABLE WASTE MANAGEMENT OF TRADITIONAL CRAFT INDUSTRY IN LOPATI TOURISM VILLAGE, YOGYAKARTA

OpenAIRE

VITASURYA Vincentia Reni; PUDIANTI Anna

2016-01-01

Ecotourism has been growing in Yogyakarta that can be seen through the development of rural tourism. The development of rural tourism has positive impact to improve local community’s welfare nevertheless, it has also negative impact onto environmental carrying capacity. Lopati tourism village is located in Bantul, Yogyakarta, relying on traditional craft industry as tourism attraction. Traditional crafts are livelihood of local residents, so that environmental management efforts become part o...

"Just as the Structural Formula Does": Names, Diagrams, and the Structure of Organic Chemistry at the 1892 Geneva Nomenclature Congress.

Science.gov (United States)

Hepler-Smith, Evan

2015-02-01

At the Geneva Nomenclature Congress of 1892, some of the foremost organic chemists of the late nineteenth century crafted a novel relationship between chemical substances, chemical diagrams, and chemical names that has shaped practices of chemical representation ever since. During the 1880s, the French chemist Charles Friedel organised the nomenclature reform effort that culminated in the Geneva Congress; in the disorderly nomenclature of German synthetic chemistry, Friedel saw an opportunity to advance French national interests and his own pedagogical goals. Friedel and a group of close colleagues reconceived nomenclature as a unified field, in which all chemical names ought to relate clearly to one another and to the structure of the compounds they represented. The German chemist Adolf von Baeyer went a step farther, arguing for names that precisely and uniquely corresponded to the structural formula of each compound, tailored for use in chemical dictionaries and handbooks. Baeyer's vision prevailed at the Geneva Congress, which consequently codified rules for rigorously mapping structural formulas into names, resulting in names that faithfully represented the features of these diagrams but not always the chemical behaviour of the compounds themselves. This approach ultimately limited both the number of chemical compounds that the Geneva rules were able to encompass and the breadth of their application. However, the relationship between diagram and name established at the Geneva Congress became the foundation not only of subsequent systems of chemical nomenclature but of methods of organising information that have supported the modern chemical sciences.

Combining Organometallic Catalysis and Organocatalysis for the Synthesis of Heterocyclic Scaffolds

DEFF Research Database (Denmark)

Hansen, Casper Lykke

The main work presented in this thesis describes the development of efficient and novel methodologies for the synthesis of pharmaceutically interesting indolecontaining alkaloids, i.e., the 1,2,3,4-tetrahydro-β-carboline and the 1,2,3,4-tetrahydrocarbazole scaffolds. The synthesis of 1...... to the nitrogen in the allylic system proved to be highly important for the enantioselectivity. Enantiomeric excesses up to 57% was obtained. The synthesis of 1,2,3,4-tetrahydrocarbazole relied on novel Brønsted acidcatalyzed Friedel-Crafts-type reactions. Three different kinds of 1,2,3,4-tetrahydrocarbazole...

ARKTOS amphibious oil spill response craft for mixed ice/water conditions

Energy Technology Data Exchange (ETDEWEB)

Seligman, Bruce H.J.W. [ARKTOS International S.A., Tavannes (Switzerland)], email: bruce.seligman@arktoscraft.com; Hall, T.A. [Hall Marine Design Ltd., Vancouver B.C. (Canada)], email: thallhmd@telus.net

2010-07-01

The oil spill which occurred recently in the Gulf of Mexico highlighted the lack of efficient oil spill clean-up equipment for an offshore environment. With the increase in industrial operations in the Arctic Seas it is of high importance to develop an efficient oil spill response as the absence of reliable oil spill contingency plans will not be tolerated in such environmentally sensitive areas. The aim of this paper is to present the use of the ARKTOS amphibious craft for cleaning up an oil spill in the Arctic. This craft is usually used for logistical services and evacuation purposes; its use for clean-up purposes has been under study since 2000. This study showed that the ARKTOS craft could be an efficient means for oil spill clean-up in the Arctic because of its proven ice capable amphibious platforms and its hydraulic power; however oil collection trials should be performed to validate it.

ARKTOS amphibious oil spill response craft for mixed ice/water conditions

International Nuclear Information System (INIS)

Seligman, Bruce H.J.W.; Hall, T.A.

2010-01-01

The oil spill which occurred recently in the Gulf of Mexico highlighted the lack of efficient oil spill clean-up equipment for an offshore environment. With the increase in industrial operations in the Arctic Seas it is of high importance to develop an efficient oil spill response as the absence of reliable oil spill contingency plans will not be tolerated in such environmentally sensitive areas. The aim of this paper is to present the use of the ARKTOS amphibious craft for cleaning up an oil spill in the Arctic. This craft is usually used for logistical services and evacuation purposes; its use for clean-up purposes has been under study since 2000. This study showed that the ARKTOS craft could be an efficient means for oil spill clean-up in the Arctic because of its proven ice capable amphibious platforms and its hydraulic power; however oil collection trials should be performed to validate it.

25 CFR 309.9 - When can non-Indians make and sell products in the style of Indian arts and crafts?

Science.gov (United States)

2010-04-01

... of Indian arts and crafts? 309.9 Section 309.9 Indians INDIAN ARTS AND CRAFTS BOARD, DEPARTMENT OF THE INTERIOR PROTECTION OF INDIAN ARTS AND CRAFTS PRODUCTS § 309.9 When can non-Indians make and sell products in the style of Indian arts and crafts? A non-Indian can make and sell products in the style of...

The job crafting intervention: effects on job resources, self-efficacy, and affective well-being

NARCIS (Netherlands)

van den Heuvel, M.; Demerouti, E.; Peeters, M.C.W.

2015-01-01

This quasi-experimental field study examines the effects of an intervention designed to boost job resources, affective well-being, and self-efficacy via job crafting behaviour. Employees (n = 39) in a Dutch police district received a 1-day training, after which they worked towards self-set crafting

The job crafting intervention : Effects on job resources, self-efficacy, and affective well-being

NARCIS (Netherlands)

van den Heuvel, Machteld; Demerouti, Evangelia; Peeters, Maria|info:eu-repo/dai/nl/07487893X

2015-01-01

This quasi-experimental field study examines the effects of an intervention designed to boost job resources, affective well-being, and self-efficacy via job crafting behaviour. Employees (n = 39) in a Dutch police district received a 1-day training, after which they worked towards self-set crafting

46 CFR 25.25-17 - Survival craft requirements for uninspected passenger vessels of at least 100 gross tons.

Science.gov (United States)

2010-10-01

... 46 Shipping 1 2010-10-01 2010-10-01 false Survival craft requirements for uninspected passenger... Survival craft requirements for uninspected passenger vessels of at least 100 gross tons. (a) Each uninspected passenger vessel of at least 100 gross tons must have adequate survival craft with enough capacity...

Sarawak Bamboo Craft: Symbolism and Phenomenon

Directory of Open Access Journals (Sweden)

Arshad Mohd Zaihidee

2014-04-01

Full Text Available The relationship between human beings and their environment has stirred reactions between nature and the development of mind and actions that can be discussed using interdisciplinary approaches such as psychology, sociology, anthropology and history, in understanding human thinking and behavior. A psychological approach is intended to evaluate the individual choices and needs in society. A sociological approach details the various patterns in the social organization. An anthropological approach is tied with culture and belief to fulfil human needs which are based on their habitat, while a historical approach looks at the development which is related to the past. Dimensions of experiences, order and logic, selective elaboration and expressions are used to analyze the bamboo craft of Iban, Melanau and Bidayuh societies in Sarawak long-houses. The existence of constitutive, moral, expressive and cognitive symbols has been interpreted based on a theoretical framework that has been developed by Langer Art Theory, Parsons Social Theory and Kaplan Culture Theory. The values and meaning formed are interpreted to understand matters related to the lives of villagers and the finding suggests that bamboo craft expresses the multi-ethnic mind and character in the socio-culture of long- houses in Sarawak.

Purpose and pleasure in late life: Conceptualising older women's participation in art and craft activities.

Science.gov (United States)

Liddle, Jeannine L M; Parkinson, Lynne; Sibbritt, David W

2013-12-01

The fourth age, as the last stage of life, represents a final challenge to find personal meaning in the face of changing capacities, illness and disability. Participation in valued activities is important for sustaining interest in life and has been associated with enhanced health and well-being. Art and craft activities are a popular form of participation amongst women in late life with growing international interest in the potential for these types of activities to maintain health and well-being and address problems of social isolation. Drawing on open text comments from 114 women enrolled in the Australian Longitudinal Study on Women's Health and in-depth interviews with 23 women all aged in their eighties, this paper explores the nature of older women's participation in art and craft activities and conceptualises links between participation in these activities and health and well-being in late life. Participation in art and craft activities is complex and dynamic, comprising cognitive and physical processes infused with emotion and occurs in the context of social relationships, physical spaces, physical ailments and beliefs about the value of the activities. By participating in art and craft activities, older women find purpose in their lives, contributing to their subjective well-being whilst helping and being appreciated by others. They develop a self view as enabled and as such take on new art and craft challenges, continue to learn and develop as art and craft makers and remain open to new possibilities. © 2013.

Job crafting and its impact on work engagement and job satisfaction in mining and manufacturing

Directory of Open Access Journals (Sweden)

Leon T de Beer

2016-09-01

Full Text Available The purpose of this study was to investigate job crafting and its relationship with work engagement and job satisfaction within the South African context. This research is important as job crafting has been shown to have a positive influence on employee motivation. A cross-sectional survey design was used to collect primary data from organisations in the mining and manufacturing industries of South Africa (N = 470. The results of multi-group structural equation modelling showed that the original four-factor structure of the job crafting scale was supported by the data, but that a three-factor structure was necessary due to a discriminant validity concern regarding two job crafting dimensions. Regression results revealed that increasing structural job resources with challenging job demands, and increasing social job resources were significant predictors of work engagement in both groups. Contrary to expectations decreasing hindering job demands was a negative predictor of job satisfaction in the mining group. Furthermore, increasing social job resources was also a significant predictor of job satisfaction in both groups. This study indicates the importance of job crafting for work engagement and job satisfaction in organisations.

46 CFR 117.207 - Survival craft-vessels operating on lakes, bays, and sounds routes.

Science.gov (United States)

2010-10-01

... 46 Shipping 4 2010-10-01 2010-10-01 false Survival craft-vessels operating on lakes, bays, and... 49 PASSENGERS LIFESAVING EQUIPMENT AND ARRANGEMENTS Number and Type of Survival Craft § 117.207 Survival craft—vessels operating on lakes, bays, and sounds routes. (a) Each vessel with overnight...

Shifting Values: The Promotional Policies of Craft and Industrial Design in Flanders (1980-2001)

NARCIS (Netherlands)

Gimeno Martinez, J.C.

2014-01-01

This article looks at the shifts in cultural promotion of craft as a result of a particular political conjuncture in the region of Flanders (Belgium). In 1991, as a consequence of Belgian federalization, the promotion policies for craft in Flanders passed from being answerable to the Belgian state

77 FR 32985 - Notice of Inventory Completion: U.S. Department of the Interior, Indian Arts and Crafts Board...

Science.gov (United States)

2012-06-04

... Inventory Completion: U.S. Department of the Interior, Indian Arts and Crafts Board, Museum of the Plains... Plains Indian, Indian Arts and Crafts Board, has completed an inventory of human remains, in consultation..., Indian Arts and Crafts Board. Disposition of the human remains to the Indian tribes stated below may...

Bottom Raking Damage to High-Speed Craft

DEFF Research Database (Denmark)

Simonsen, Bo Cerup

1998-01-01

This paper presents a comparative study of the raking damage to high speed craft (HSC) and conventional ships. The analysis is based on a detailed theoretical model for the raking resistance of an assembled ship bottom structure and on the idea that the impact conditions for various ship types have...

The Influence of Future Time Perspective on Worker Outcomes: The Role of Job Crafting

NARCIS (Netherlands)

Kooij, T.A.M.; Tims, M.; Akkermans, J.

2017-01-01

This two-wave study aimed to examine future time perspective (FTP) as an antecedent of job crafting, and in turn job crafting as a mediator in associations between FTP and work outcomes. Based on the lifespan socio-emotional selectivity theory, we expected that open-ended and limited FTP would evoke

Classification of radiolarian images with hand-crafted and deep features

Science.gov (United States)

Keçeli, Ali Seydi; Kaya, Aydın; Keçeli, Seda Uzunçimen

2017-12-01

Radiolarians are planktonic protozoa and are important biostratigraphic and paleoenvironmental indicators for paleogeographic reconstructions. Radiolarian paleontology still remains as a low cost and the one of the most convenient way to obtain dating of deep ocean sediments. Traditional methods for identifying radiolarians are time-consuming and cannot scale to the granularity or scope necessary for large-scale studies. Automated image classification will allow making these analyses promptly. In this study, a method for automatic radiolarian image classification is proposed on Scanning Electron Microscope (SEM) images of radiolarians to ease species identification of fossilized radiolarians. The proposed method uses both hand-crafted features like invariant moments, wavelet moments, Gabor features, basic morphological features and deep features obtained from a pre-trained Convolutional Neural Network (CNN). Feature selection is applied over deep features to reduce high dimensionality. Classification outcomes are analyzed to compare hand-crafted features, deep features, and their combinations. Results show that the deep features obtained from a pre-trained CNN are more discriminative comparing to hand-crafted ones. Additionally, feature selection utilizes to the computational cost of classification algorithms and have no negative effect on classification accuracy.

33 CFR 149.303 - What survival craft and rescue boats may be used on a manned deepwater port?

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false What survival craft and rescue boats may be used on a manned deepwater port? 149.303 Section 149.303 Navigation and Navigable Waters... craft and rescue boats may be used on a manned deepwater port? (a) Each survival craft on a manned...

"Miss! I'm Done!" Finishing Craft Assignments as a Situated Activity System in Preschool

Science.gov (United States)

Deunk, Marjolein; Berenst, Jan; de Glopper, Kees

2010-01-01

We describe the Situated Activity System of finishing craft assignments in preschool: the specific, routinized way that child and teacher jointly close the child's craft assignment, employing a specific discourse pattern. We analyzed the interactions of 14 Dutch children between 2.1 and 3.10 years old while they were finishing their craft…

NATURAL BASES AND ARTISTIC MEANS OF MODERN ARTS AND CRAFTS OF DAGESTAN

Directory of Open Access Journals (Sweden)

G. G. Gazimagomedov

2015-01-01

Full Text Available The aim is to carry out a generalized analysis of the history of formation of a new artistic language in contemporary arts and crafts of Dagestan. An innovative search for applied artist has gained further development in a series of works of the leading masters of folk arts and crafts of Dagestan. Discussion. For millennia, arts and crafts of Dagestan have been organically linked with the life of people and their everyday way of life and daily activities, with their worldview and understanding of beauty. In the middle of the 1st millennium BC in the mountainous Dagestan, art of bronze casting has reached a high degree of perfection, most vividly represented by statues of different wild and domestic animals. Images of animals are interpreted generically, without study of small details, but with the characteristic features of the exterior. Paired images of birds are often found in the arts and crafts of the medieval Dagestan. This heraldic composition, two-part or in conjunction with the sacred tree - a three-part, presented in metal-plastic and carved stone and wood, was one of the most popular and enduring decorative items that was common during the Middle Ages and has survived to the present day. This also has been further developed and improved and inherited by craftsmen of Dagestan.Conclusion. When creating works of arts and crafts craftsmen use diverse traditional arts and engineering techniques, the ancient but substantially revised and reinterpreted iconic scenes and ornamental motifs. In art, folk craftsmen emphasize the unity of man and nature. Most ornamental motifs common in Dagestan, go back to the very specific nature prototypes. Compositional structure, as the artistic analysis shows, is often borrowed from nature. This feeling becomes a condition for cultural and biological development, acting as a factor of co-evolution of man and nature.

25 CFR 309.1 - How do the regulations in this part carry out the Indian Arts and Crafts Act of 1990?

Science.gov (United States)

2010-04-01

... Arts and Crafts Act of 1990? 309.1 Section 309.1 Indians INDIAN ARTS AND CRAFTS BOARD, DEPARTMENT OF THE INTERIOR PROTECTION OF INDIAN ARTS AND CRAFTS PRODUCTS § 309.1 How do the regulations in this part carry out the Indian Arts and Crafts Act of 1990? These regulations define the nature and Indian origin...

Dataset on Investigating the role of onsite learning in the optimisation of craft gang's productivity in the construction industry.

Science.gov (United States)

Ugulu, Rex Asibuodu; Allen, Stephen

2017-12-01

The data presented in this article is an original data on "Investigating the role of onsite learning in the optimisation of craft gang's productivity in the construction industry". This article describes the constraints influencing craft gang's productivity and the influence of onsite learning on the blockwork craft gang's productivity. It also presented the method of data collection, using a semi-structured interview and an observation method to collect data from construction organisations. We provided statistics on the top most important constraints affecting the craft gang's productivity using 3-D Bar charts. In addition, we computed the correlation coefficients and the regression model on the influence of onsite learning on craft gang's productivity using the man-hour as the dependent variable. The relationship between blockwork inputs and cycle numbers was determined at 5% significance level. Finally, we presented data information on the application of the learning curve theory using the unit straight-line model equations and computed the learning rate of the observed craft gang's blockwork repetitive work.

Craft Knowledge: Of Disciplinarity in Writing Studies

Science.gov (United States)

Johnson, Robert R.

2010-01-01

This article argues that craft knowledge can provide a disciplinary rationale for writing studies. It draws from the ancient concepts of teche, phronesis, and the four causes of making and makes the case for a definition of disciplinary knowledge fitting for writing studies. The article concludes with a conceptual framework that can serve as a…

Conceptualizing responsible innovation in craft villages in Vietnam

NARCIS (Netherlands)

Voeten, J.; de Haan, J.A.C.; Roome, N.; de Groot, G.A.; Nguyen Thi, Huong; van den Hoven, J.; Doorn, N.; Swierstra, T.; Koops, B.-J.; Romijn, H.

2014-01-01

Previous research by the authors has explored small-scale innovations in poor craft producers’ clusters in villages in the Red River Delta in northern Vietnam. Although these innovations resulted in value creation and increased incomes, they also often gave rise to negative environmental or social

Effects of a job crafting intervention program on work engagement among Japanese employees: a pretest-posttest study

OpenAIRE

Sakuraya, Asuka; Shimazu, Akihito; Imamura, Kotaro; Namba, Katsuyuki; Kawakami, Norito

2016-01-01

Abstract Background Job crafting, an employee-initiated job design/redesign, has become important for employees’ well-being such as work engagement. This study examined the effectiveness of a newly developed job crafting intervention program on work engagement (as primary outcome), as well as job crafting and psychological distress (as secondary outcomes), using a pretest-posttest study design among Japanese employees. Methods Participants were managers of a private company and a private psyc...

Job crafting and its impact on work engagement and job satisfaction in mining and manufacturing

NARCIS (Netherlands)

De Beer, L.T. (Leon T.); M. Tims (Maria); A.B. Bakker (Arnold)

2016-01-01

textabstractThe purpose of this study was to investigate job crafting and its relationship with work engagement and job satisfaction within the South African context. This research is important as job crafting has been shown to have a positive influence on employee motivation. A cross-sectional

Workaholism versus work engagement and job crafting : What is the role of self-management strategies?

NARCIS (Netherlands)

Zeijen, Marijntje E.L.; Peeters, Maria C.W.; Hakanen, Jari J.

2018-01-01

Job crafting refers to the proactive actions employees take to redesign their jobs in order to get a better fit with their competencies, expectations, and wishes. So far, little is known about job crafting's underlying mechanisms. In this study, we examine how two different states of affective

Workaholism versus work engagement and job crafting : What is the role of self-management strategies?

NARCIS (Netherlands)

Zeijen, M.; Peeters, M.C.W.; Hakanen, J.

Job crafting refers to the proactive actions employees take to redesign their jobs in order to get a better fit with their competencies, expectations, and wishes. So far, little is known about job crafting's underlying mechanisms. In this study, we examine how two different states of affective

3D DIGITAL SIMULATION OF MINNAN TEMPLE ARCHITECTURE CAISSON'S CRAFT TECHNIQUES

Directory of Open Access Journals (Sweden)

Y. C. Lin

2013-07-01

Full Text Available Caisson is one of the important representations of the Minnan (southern Fujian temple architecture craft techniques and decorative aesthetics. The special component design and group building method present the architectural thinking and personal characteristics of great carpenters of Minnan temple architecture. In late Qing Dynasty, the appearance and style of caissons of famous temples in Taiwan apparently presented the building techniques of the great carpenters. However, as the years went by, the caisson design and craft techniques were not fully inherited, which has been a great loss of cultural assets. Accordingly, with the caisson of Fulong temple, a work by the well-known great carpenter in Tainan as an example, this study obtained the thinking principles of the original design and the design method at initial period of construction through interview records and the step of redrawing the "Tng-Ko" (traditional design, stakeout and construction tool. We obtained the 3D point cloud model of the caisson of Fulong temple using 3D laser scanning technology, and established the 3D digital model of each component of the caisson. Based on the caisson component procedure obtained from interview records, this study conducted the digital simulation of the caisson component to completely recode and present the caisson design, construction and completion procedure. This model of preserving the craft techniques for Minnan temple caisson by using digital technology makes specific contribution to the heritage of the craft techniques while providing an important reference for the digital preservation of human cultural assets.

Evidence of Validity of the Job Crafting Behaviors Scale

Directory of Open Access Journals (Sweden)

Renata Silva de Carvalho Chinelato

2015-12-01

Full Text Available AbstractJob crafting behavior refers to the changes made by workers in their job context for adjusting their activities to their preferences. We sought to adapt and collect validity evidences of the Job Crafting Behaviors Scale for the Brazilian context, in a sample of 491 workers, with a mean age of 26.7 years. Factor analysis revealed that the final instrument consisted of three dimensions (increasing structural job resources, increasing social job resources, increasing challenging job demands, which showed good internal consistency indexes. These dimensions showed low or moderate correlations with work engagement, positive psychological capital, positive job affect, and in-role performance. The scale showed evidence of validity, the use of which is recommended for future research on the changes that people make in their jobs.

Job Crafting: Older Workers’ Mechanism for Maintaining Person-Job Fit

Science.gov (United States)

Wong, Carol M.; Tetrick, Lois E.

2017-01-01

Aging at work is a dynamic process. As individuals age, their motives, abilities and values change as suggested by life-span development theories (Lang and Carstensen, 2002; Kanfer and Ackerman, 2004). Their growth and extrinsic motives weaken while intrinsic motives increase (Kooij et al., 2011), which may result in workers investing their resources in different areas accordingly. However, there is significant individual variability in aging trajectories (Hedge et al., 2006). In addition, the changing nature of work, the evolving job demands, as well as the available opportunities at work may no longer be suitable for older workers, increasing the likelihood of person-job misfit. The potential misfit may, in turn, impact how older workers perceive themselves on the job, which leads to conflicting work identities. With the traditional job redesign approach being a top-down process, it is often difficult for organizations to take individual needs and skills into consideration and tailor jobs for every employee (Berg et al., 2010). Therefore, job crafting, being an individualized process initiated by employees themselves, can be a particularly valuable mechanism for older workers to realign and enhance their demands-abilities and needs-supplies fit. Through job crafting, employees can exert personal agency and make changes to the task, social and cognitive aspects of their jobs with the goal of improving their work experience (Wrzesniewski and Dutton, 2001). Building on the Life Span Theory of Control (Heckhausen and Schulz, 1995), we posit that job crafting, particularly cognitive crafting, will be of increasing value as employees age. Through reframing how they think of their job and choosing to emphasize job features that are personally meaningful, older workers can optimize their resources to proactively redesign their jobs and maintain congruent, positive work identities. PMID:28943859

Job Crafting: Older Workers’ Mechanism for Maintaining Person-Job Fit

Directory of Open Access Journals (Sweden)

Carol M. Wong

2017-09-01

Full Text Available Aging at work is a dynamic process. As individuals age, their motives, abilities and values change as suggested by life-span development theories (Lang and Carstensen, 2002; Kanfer and Ackerman, 2004. Their growth and extrinsic motives weaken while intrinsic motives increase (Kooij et al., 2011, which may result in workers investing their resources in different areas accordingly. However, there is significant individual variability in aging trajectories (Hedge et al., 2006. In addition, the changing nature of work, the evolving job demands, as well as the available opportunities at work may no longer be suitable for older workers, increasing the likelihood of person-job misfit. The potential misfit may, in turn, impact how older workers perceive themselves on the job, which leads to conflicting work identities. With the traditional job redesign approach being a top-down process, it is often difficult for organizations to take individual needs and skills into consideration and tailor jobs for every employee (Berg et al., 2010. Therefore, job crafting, being an individualized process initiated by employees themselves, can be a particularly valuable mechanism for older workers to realign and enhance their demands-abilities and needs-supplies fit. Through job crafting, employees can exert personal agency and make changes to the task, social and cognitive aspects of their jobs with the goal of improving their work experience (Wrzesniewski and Dutton, 2001. Building on the Life Span Theory of Control (Heckhausen and Schulz, 1995, we posit that job crafting, particularly cognitive crafting, will be of increasing value as employees age. Through reframing how they think of their job and choosing to emphasize job features that are personally meaningful, older workers can optimize their resources to proactively redesign their jobs and maintain congruent, positive work identities.

A review of new developments in the Friedel–Crafts alkylation – From green chemistry to asymmetric catalysis

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Magnus Rueping

2010-01-01

Full Text Available The development of efficient Friedel–Crafts alkylations of arenes and heteroarenes using only catalytic amounts of a Lewis acid has gained much attention over the last decade. The new catalytic approaches described in this review are favoured over classical Friedel–Crafts conditions as benzyl-, propargyl- and allyl alcohols, or styrenes, can be used instead of toxic benzyl halides. Additionally, only low catalyst loadings are needed to provide a wide range of products. Following a short introduction about the origin and classical definition of the Friedel–Crafts reaction, the review will describe the different environmentally benign substrates which can be applied today as an approach towards greener processes. Additionally, the first diastereoselective and enantioselective Friedel–Crafts-type alkylations will be highlighted.

Simple synthesis of P(Cbz-alt-TBT) and PCDTBT by combining direct arylation with suzuki polycondensation of heteroaryl chlorides.

Science.gov (United States)

Lombeck, Florian; Matsidik, Rukiya; Komber, Hartmut; Sommer, Michael

2015-01-01

Direct arylation (DA) of 2-chlorothiophene and 2-chloro-3-hexylthiophene with 4,7-dibromo-2,1,3-benzothiadiazole is used to synthesize 4,7-bis(5-chloro-2-thienyl)-2,1,3-benzothiadiazole (TBTCl2) and 4,7-bis(5-chloro-4-hexyl-2-thienyl)-2,1,3-benzothiadiazole (DH-TBTCl2) in one step. Suitable conditions of the Suzuki polycondensations (SPC) of TBTCl2 and DH-TBTCl2 with the carbazole comonomer CbzPBE2 are established, furnishing PCDTBT and P(Cbz-alt-TBT) with high molecular weight and yield. Compared with control samples made from the corresponding dibromides, high-temperature NMR and UV-vis spectroscopy indicate similar properties for PCDTBT but an increased content of Cbz-Cbz homocouplings for P(Cbz-alt-TBT). © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Reading the Writer's Craft: The Hemingway Short Stories

Science.gov (United States)

Garrigues, Lisa

2004-01-01

The high school students who spent five weeks studying the style and craft of Ernest Hemingway experienced the power and plus points of apprenticeships. Several assignments that helped the high school juniors to analyze Hemingway's work on short stories and learn from this master craftsman are presented.

The craft of scientific writing

CERN Document Server

Alley, Michael

2019-01-01

The Craft of Scientific Writing uses scores of examples to show the differences between scientific writing that informs and persuades and scientific writing that does not. Focusing on technical papers, dissertations, and reports, this text shows engineers, scientists, and technical professionals the five keys of style that distinguish the best scientific documents: (1) having the details presented in a methodical fashion, (2) having the important details emphasized, (3) having ideas cast into clear and precise sentences, (4) having clear connections between those ideas, and (5) having illustrations that persuade.

Cultivating Perspectival Acuity: The Value and Cost of Integrating Theory, Craft, Research, and Practice

Directory of Open Access Journals (Sweden)

Joe Manganelli

2016-10-01

Full Text Available This paper presents reflections on integrating theory, craft, research, and practice to improve the accuracy and resiliency of each. The reflections build toward a set of statements about the value and the cost of integrating theory, craft, research, and practice. Specifically, the authors offer the Privileged Work / Non-Privileged Work Framework and concept of cultivating Perspectival Acuity.

The Need for the United States Army to Possess a Landing Craft with Maneuver Capabilities

Science.gov (United States)

2015-06-12

landing craft after the 2004 Indian Ocean tsunami and the 2009 Myanmar cyclone.9 The landing craft enabled the relief effort to bypass partially...requirements for Army aviation . The Need for America’s Amphibious Capability In his thesis, “The Need for the United States of America’s Amphibious

Effects of a job crafting intervention program on work engagement among Japanese employees: a pretest-posttest study.

Science.gov (United States)

Sakuraya, Asuka; Shimazu, Akihito; Imamura, Kotaro; Namba, Katsuyuki; Kawakami, Norito

2016-10-24

Job crafting, an employee-initiated job design/redesign, has become important for employees' well-being such as work engagement. This study examined the effectiveness of a newly developed job crafting intervention program on work engagement (as primary outcome), as well as job crafting and psychological distress (as secondary outcomes), using a pretest-posttest study design among Japanese employees. Participants were managers of a private company and a private psychiatric hospital in Japan. The job crafting intervention program consisted of two 120-min sessions with a two-week interval between them. Outcomes were assessed at baseline (Time 1), post-intervention (Time 2), and a one-month follow-up (Time 3). The mixed growth model analyses were conducted using time (Time 1, Time 2, and Time 3) as an indicator of intervention effect. Effect sizes were calculated using Cohen's d. The program showed a significant positive effect on work engagement (t = 2.20, p = 0.03) in the mixed growth model analyses, but with only small effect sizes (Cohen's d = 0.33 at Time 2 and 0.26 at Time 3). The program also significantly improved job crafting (t = 2.36, p = 0.02: Cohen's d = 0.36 at Time 2 and 0.47 at Time 3) and reduced psychological distress (t = -2.06, p = 0.04: Cohen's d = -0.15 at Time 2 and -0.31 at Time 3). The study indicated that the newly developed job crafting intervention program was effective in increasing work engagement, as well as in improving job crafting and decreasing psychological distress, among Japanese managers. UMIN Clinical Trials Registry UMIN000024062 . Retrospectively registered 15 September 2016.

The Computer and the Writer's Craft: Implications for Teachers.

Science.gov (United States)

Brockmann, R. John; McCauley, Rebecca J.

1984-01-01

Examines how computers as a medium for communication affect the craft of writing, and subsequently affect teaching approaches. Discusses the need for teaching online document design and problem-solving processes as they relate to the communication process. (HTH)

Children Designing a Soft Toy. An LCE model as an application of the experiential learning during the holistic craft process

Directory of Open Access Journals (Sweden)

Marja-Leena Rönkkö

2015-02-01

Full Text Available In a holistic craft process, the same person designs a visual and technical appearance, produces the design with craft materials and technologies, make necessary changes to the design during its production and finally assesses the process and the finished product. Similarly, in the educational context, students should make craft products starting with the design process. These kinds of designing and hands-on activities nurture students’ creativity and problem-solving skills and offer them an opportunity to test their ideas and see them realised. Testing and further developing pedagogical approaches to holistic craft is important from the perspective of the renewal of the national core curriculum (2016 in Finland, which emphasises holistic approaches and the integration of different content areas. This study presents an experiential learning model of combining literature education, ethic-moral education and craft. Kolb’s model of experiential learning gives a solid and systematic theoretical base for this LCE model (one combining literature, craft and ethic-moral education. The teaching experiment is implemented as a craft process supported with children’s literature and activities based on a story. It seems that children can derive benefit from literature and activities during a craft making process. In addition, referencing literature enables the teacher to combine the craft process with multiple learning targets, fostering both ethical and content skills. We present the LCE model both in the light of an experiential learning model and the pragmatic implementations it gives rise to. According to our experiments, experiential learning can be meaningfully applied to the holistic craft process and craft education. Furthermore, the LCE model helps students to commit to holistic craft by nurturing a personal attachment. Normal 0 21 false false false FI X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso

Report: The New Brunswick Indian Arts and Crafts Association Workshop for Board Members. No. 165.

Science.gov (United States)

Goddu, Roland; Nicholas, Darryl

This is a report on a training session conducted for the board members of the New Brunswick Indian Arts and Crafts Association with the aim of outlining purposes of the Association, and assisting in drawing up plans for a formal administrative structure among arts and crafts organizations. An administrative manual containing terms of reference…

Continual Online Evolutionary Planning for In-Game Build Order Adaptation in StarCraft

DEFF Research Database (Denmark)

Justesen, Niels Orsleff; Risi, Sebastian

2017-01-01

able to switch between predefined strategies, which makes it hard to adapt to new situations. This paper introduces an evolutionary-based method to overcome this challenge, called Continual Online Evolutionary Planning (COEP), which is able to perform in-game adaptive build-order planning. COEP......The real-time strategy game StarCraft has become an important benchmark for AI research as it poses a complex environment with numerous challenges. An important strategic aspect in this game is to decide what buildings and units to produce. StarCraft bots playing in AI competitions today are only...... was added to an open source StarCraft bot called UAlbertaBot and is able to outperform the built-in bots in the game as well as being competitive against a number of scripted opening strategies. The COEP augmented bot can change its build order dynamically and quickly adapt to the opponent’s strategy....

Bioinspired intramolecular Diels-Alder reaction: a rapid access to the highly-strained cyclopropane-fused polycyclic skeleton.

Science.gov (United States)

Zhu, Shifa; Guo, Zhengjiang; Huang, Zhipeng; Jiang, Huanfeng

2014-02-24

A bioinsipred gold-catalyzed tandem Diels-Alder/Diels-Alder reaction of an enynal and a 1,3-diene, forming the highly-strained benzotricyclo[3.2.1.0(2,7) ]octane skeleton, was reported. In contrast, a Diels-Alder/Friedel-Crafts tandem reaction occurred instead when silver salts were used as the catalyst. Although both reactions experienced the similar Diels-Alder reaction of a pyrylium intermediate with a 1,3-diene, they have different reaction mechanisms. The former proceeded with a stepwise Diels-Alder reaction, while the latter one with a concerted one. Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Poly-benzyl domains grown on porous silicon and their I-V rectification

International Nuclear Information System (INIS)

Chao Jie; Han Huanmei; Xia Bing; Ba Long; Liu Hongbo; Xiao Shoujun

2007-01-01

Microwave-irradiated polymerization of benzyl chloride and triphenyl chloromethane on hydride-terminated porous silicon (PS) was achieved through the use of Zn powder as a catalyst. Transmission infrared Fourier-transform spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) analyses confirmed the poly-benzyl membranes grafted on PS. Topographical images by AFM revealed crystal-like domains rather than homogenous monolayers on the surface. The current-voltage measurements in nano-scale by current sensing atomic force microscopy (CS-AFM) showed the rectification behavior of this polymer membrane. Finally, mechanism of a radical initiation on the surface and a following Friedel-Crafts alkylation was proposed for the covalent assembly of poly-benzyl domains

Effects of a job crafting intervention program on work engagement among Japanese employees: a pretest-posttest study

Directory of Open Access Journals (Sweden)

Asuka Sakuraya

2016-10-01

Full Text Available Abstract Background Job crafting, an employee-initiated job design/redesign, has become important for employees’ well-being such as work engagement. This study examined the effectiveness of a newly developed job crafting intervention program on work engagement (as primary outcome, as well as job crafting and psychological distress (as secondary outcomes, using a pretest-posttest study design among Japanese employees. Methods Participants were managers of a private company and a private psychiatric hospital in Japan. The job crafting intervention program consisted of two 120-min sessions with a two-week interval between them. Outcomes were assessed at baseline (Time 1, post-intervention (Time 2, and a one-month follow-up (Time 3. The mixed growth model analyses were conducted using time (Time 1, Time 2, and Time 3 as an indicator of intervention effect. Effect sizes were calculated using Cohen’s d. Results The program showed a significant positive effect on work engagement (t = 2.20, p = 0.03 in the mixed growth model analyses, but with only small effect sizes (Cohen’s d = 0.33 at Time 2 and 0.26 at Time 3. The program also significantly improved job crafting (t = 2.36, p = 0.02: Cohen’s d = 0.36 at Time 2 and 0.47 at Time 3 and reduced psychological distress (t = −2.06, p = 0.04: Cohen’s d = −0.15 at Time 2 and −0.31 at Time 3. Conclusions The study indicated that the newly developed job crafting intervention program was effective in increasing work engagement, as well as in improving job crafting and decreasing psychological distress, among Japanese managers. Trial registration UMIN Clinical Trials Registry UMIN000024062 . Retrospectively registered 15 September 2016.

The river and the people. An approach to memories, craft and adult education

Directory of Open Access Journals (Sweden)

Emilio Lucio-Villegas

2018-04-01

Full Text Available The main aim of this article is to describe an ongoing study to recover the memories of the people and the traditional crafts associated with the Guadalquivir River where it passes through a town called C., 12km from the city of S. in the south of Spain. It seems that people are losing their sense of belonging to both a symbolic and geographical territory. The process for recovering it can be considered a generator of experiences and learning. These experiences are related to identity as an element which enables people to understand how individuals establish relationships amongst themselves and with the environment. The paper describes the process of research based on interviewing people to capture their experiences. This is a work in process. The first outcomes are related to a number of descriptive categories such as: the crafts associated with the River; the use of the River to transport goods and people; the family ties associated with the crafts; the cosmopolitanism of the people and the changes ensuing from it; the role of women; and the River as a magical and mysterious place. Preliminary conclusions call on us to consider the importance of recovering traditional crafts as a source of adult education, and of maintaining a cultural identity threatened by globalisation processes.

BioCraft: Using Gamification to Stimulate Students' Motivation and Acquisition of Scientific Terms in a Bilingual Classroom

Science.gov (United States)

Turner, Kent Alan

Gamification is the act of introducing game elements in any aspect of life. In this case, it is a classroom. The operating model of BioCraft was a role-playing game that reinforced deaf students' use of new vocabulary in a gamified environment. BioCraft addressed the problem of deaf students acquiring scientific terms and using these scientific terms bilingually in academic language. BioCraft also established a student-centered learning atmosphere that promoted intersubjectivity, appropriation, and self-determination. In BioCraft, students became avatars of new organisms living on a new planet who needed to learn about living systems, adaptations, and genetics in order to survive. The results of the operating model suggested that gamification had an effect on deaf students' motivation and frequency of using new scientific terms with minimal persuasion from the teacher.

The alignment of product strategy to supply chain practices of craft businesses in Gauteng Province, South Africa

Directory of Open Access Journals (Sweden)

Craig Voortman

2014-11-01

Full Text Available External factors such as blurring market boundaries, escalating customer diversity and increasing global competitive threats have forced businesses to build strategies around key products and formulate market-driven strategies that are integrated with relationship and supply chain strategies to deliver superior customer value. Indeed, in the modern era of supply chain management, organisations are getting more integrated with their suppliers and customers as a way to manage the total supply chain. The purpose of this research was to determine if product strategies and supply chain practices of small craft business are aligned. Personal in-depth interviews were conducted with nine craft businesses operating in Gauteng Province, South Africa. The findings revealed that craft businesses struggle to match their product strategies with their supply chain strategies. Craft businesses also exhibited some inbound supply chain weaknesses.

SUSTAINABLE WASTE MANAGEMENT OF TRADITIONAL CRAFT INDUSTRY IN LOPATI TOURISM VILLAGE, YOGYAKARTA

Directory of Open Access Journals (Sweden)

VITASURYA Vincentia Reni

2016-12-01

Full Text Available Ecotourism has been growing in Yogyakarta that can be seen through the development of rural tourism. The development of rural tourism has positive impact to improve local community’s welfare nevertheless, it has also negative impact onto environmental carrying capacity. Lopati tourism village is located in Bantul, Yogyakarta, relying on traditional craft industry as tourism attraction. Traditional crafts are livelihood of local residents, so that environmental management efforts become part of their daily lives. This research aims to review the roles of community to reduce environmental impacts through analyzing the waste management of traditional craft industry. It used case study method to examine the uniqueness of Lopati village. Data collecting used participatory action research techniques in order to gather information from residents. Community participation acted to anticipate negative impact on development of rural tourism.  Waste management in Lopati committed by local residents not to cause adverse environmental impacts. The result show that waste management based on community participation supports the development of rural tourism.

Direct electron transfer of glucose oxidase and dual hydrogen peroxide and glucose detection based on water-dispersible carbon nanotubes derivative.

Science.gov (United States)

Chen, Hsiao-Chien; Tu, Yi-Ming; Hou, Chung-Che; Lin, Yu-Chen; Chen, Ching-Hsiang; Yang, Kuang-Hsuan

2015-03-31

A water-dispersible multi-walled carbon nanotubes (MWCNTs) derivative, MWCNTs-1-one-dihydroxypyridine (MWCNTs-Py) was synthesis via Friedel-Crafts chemical acylation. Raman spectra demonstrated the conjugated level of MWCNTs-Py was retained after this chemical modification. MWCNTs-Py showed dual hydrogen peroxide (H2O2) and glucose detections without mutual interference by adjusting pH value. It was sensitive to H2O2 in acidic solution and displayed the high performances of sensitivity, linear range, response time and stability; meanwhile it did not respond to H2O2 in neutral solution. In addition, this positively charged MWCNTs-Py could adsorb glucose oxidase (GOD) by electrostatic attraction. MWCNTs-Py-GOD/GC electrode showed the direct electron transfer (DET) of GOD with a pair of well-defined redox peaks, attesting the bioactivity of GOD was retained due to the non-destroyed immobilization. The high surface coverage of active GOD (3.5×10(-9) mol cm(-2)) resulted in exhibiting a good electrocatalytic activity toward glucose. This glucose sensor showed high sensitivity (68.1 μA mM(-1) cm(-2)) in a linear range from 3 μM to 7 mM in neutral buffer solution. The proposed sensor could distinguish H2O2 and glucose, thus owning high selectivity and reliability. Copyright © 2015. Published by Elsevier B.V.

Application of CRAFT (complete reduction to amplitude frequency table) in nonuniformly sampled (NUS) 2D NMR data processing.

Science.gov (United States)

Krishnamurthy, Krish; Hari, Natarajan

2017-09-15

The recently published CRAFT (complete reduction to amplitude frequency table) technique converts the raw FID data (i.e., time domain data) into a table of frequencies, amplitudes, decay rate constants, and phases. It offers an alternate approach to decimate time-domain data, with minimal preprocessing step. It has been shown that application of CRAFT technique to process the t 1 dimension of the 2D data significantly improved the detectable resolution by its ability to analyze without the use of ubiquitous apodization of extensively zero-filled data. It was noted earlier that CRAFT did not resolve sinusoids that were not already resolvable in time-domain (i.e., t 1 max dependent resolution). We present a combined NUS-IST-CRAFT approach wherein the NUS acquisition technique (sparse sampling technique) increases the intrinsic resolution in time-domain (by increasing t 1 max), IST fills the gap in the sparse sampling, and CRAFT processing extracts the information without loss due to any severe apodization. NUS and CRAFT are thus complementary techniques to improve intrinsic and usable resolution. We show that significant improvement can be achieved with this combination over conventional NUS-IST processing. With reasonable sensitivity, the models can be extended to significantly higher t 1 max to generate an indirect-DEPT spectrum that rivals the direct observe counterpart. Copyright © 2017 John Wiley & Sons, Ltd.

Structure Manipulation of Carbon Aerogels by Managing Solution Concentration of Precursor and Its Application for CO2 Capture

Directory of Open Access Journals (Sweden)

Pingping He

2018-04-01

Full Text Available A series of carbon aerogels were synthesized by polycondensation of resorcinol and formaldehyde, and their structure was adjusted by managing solution concentration of precursors. Carbon aerogels were characterized by X-ray diffraction (XRD, Raman, Fourier transform infrared spectroscopy (FTIR, N2 adsorption/desorption and scanning electron microscope (SEM technologies. It was found that the pore structure and morphology of carbon aerogels can be efficiently manipulated by managing solution concentration. The relative micropore volume of carbon aerogels, defined by Vmicro/Vtol, first increased and then decreased with the increase of solution concentration, leading to the same trend of CO2 adsorption capacity. Specifically, the CA-45 (the solution concentration of precursors is 45 wt% sample had the highest CO2 adsorption capacity (83.71 cm3/g and the highest selectivity of CO2/N2 (53 at 1 bar and 0 °C.

Transferring PSM craft skills in a 2 hour session

NARCIS (Netherlands)

Zijderveld, E.J.A. van; Morill, N.; Shaw, D.; Belton, V.; Harvey, P.; Rouwette, E.

2007-01-01

Many of those involved in the Problem Structuring Methods (PSM) community have commented on the struggle that novices face in building the craft skills associated with conducting a PSM intervention. As part of this year's Operational Research Society Conference, we have three 2-hour practical

Classroom Teachers' Craft Knowledge of Their Inclusive Practice

Science.gov (United States)

Black-Hawkins, Kristine; Florian, Lani

2012-01-01

Whilst recent decades have seen significant progress in research on inclusive education, many teachers still feel that the research literature does not fully address their professional concerns about how to enact a policy of inclusion in their classrooms. To help to bridge this gap, we drew on the concept of craft knowledge to undertake a detailed…

Inshore craft traditional working vessels of the british isles

CERN Document Server

Greenhill, Basil

2013-01-01

This comprehensive reference work describes and illustrates some 200 types of inshore craft that once fished and traded, under oar and sail, around the coasts of the British Isles. The types are arranged by coastal area and each is described in terms of its shape and design, fitness for location and purpose, build, evolution and geographical distribution. Details of dimensions, rig, building materials, seamanship and the survival of examples are given where known, while hundreds of line drawings and photographs show the vessels in their original forms.A team of twelve experts describe all these boat types and, in addition, there are introductions to the main geographic areas outlining the physical environments, fisheries and other uses of the sea that have influenced boat design; maps of all the areas show ports and physical features.At the beginning of the last century sail and oar dominated fisheries and local trade: one hundred years later those craft have all but vanished. This book brings alive for marit...

Degradation of spent craft brewer's yeast by caprine rumen hyper ammonia-producing bacteria.

Science.gov (United States)

Harlow, B E; Bryant, R W; Cohen, S D; O'Connell, S P; Flythe, M D

2016-10-01

Spent yeast from craft beers often includes more hops (Humulus lupulus L.) secondary metabolites than traditional recipes. These compounds include α- and β- acids, which are antimicrobial to the rumen hyper ammonia-producing bacteria (HAB) that are major contributors to amino acid degradation. The objective was to determine if the hops acids in spent craft brewer's yeast (CY; ~ 3·5 mg g(-1) hops acids) would protect it from degradation by caprine rumen bacteria and HAB when compared to a baker's yeast (BY; no hops acids). Cell suspensions were prepared by harvesting rumen fluid from fistulated goats, straining and differential centrifugation. The cells were re-suspended in media with BY or CY. After 24 h (39°C), HAB were enumerated and ammonia was measured. Fewer HAB and less ammonia was produced from CY than from BY. Pure culture experiments were conducted with Peptostreptococcus anaerobiusBG1 (caprine HAB). Ammonia production by BG1 from BY was greater than from CY. Ammonia production was greater when exogenous amino acids were included, but similar inhibition was observed in CY treatments. These results indicate that rumen micro-organisms deaminated the amino acids in CY to a lesser degree than BY. Spent brewer's yeast has long been included in ruminant diets as a protein supplement. However, modern craft beers often include more hops (Humulus lupulus L.) than traditional recipes. These compounds include α- and β- acids, which are antimicrobial to the rumen hyper ammonia-producing bacteria (HAB) that are major contributors to amino acid degradation. This study demonstrated that hops acids in spent craft brewer's yeast protected protein from destruction by HABin vitro. These results suggest that the spent yeast from craft breweries, a source of beneficial hops secondary metabolites, could have value as rumen-protected protein. Published 2016. This article is a U.S. Government work and is in the public domain in the USA.

Effectiveness of a Volunteer-Led Crafts Group Intervention amongst ...

African Journals Online (AJOL)

The purpose of this study was to determine the effectiveness of a volunteer led crafts group intervention (VLCG) as an adjunct to antidepressant medication on mild to moderately depressed women. A quasi-experimental, non-equivalent, control group study was conducted in an urban, psychiatric clinic. Depression was ...

Hypnobirth within the NHS: time to ditch the parent craft?

Science.gov (United States)

Gavin-Jones, Teri

2016-05-01

Antenatal education within the National Health Service (NHS) is a service in decline within some hospital trusts. Classes on offer are being moved into online formats or discontinued completely. Whilst research into antenatal education remains limited, what is known is that good birth preparation is of value. "Participative preparation for childbirth can enhance women's overall satisfaction with the childbirth experience" (Schrader McMillan et al 2009: 49). There are pockets of excellent antenatal education within the NHS, but no system for regulating the quality and content. Traditional 'parent craft' classes can be oversubscribed, turning what should be a participative group into an audience. Offering good quality antenatal education has the potential to increase normality, improve the birth outcome and the experience of both woman and her birth partner. Is it time to ditch the parent craft and implement dynamic woman-focused education?

CRAFTING THE MICROWORLD: HOW ROBERT HOOKE CONSTRUCTED KNOWLEDGE ABOUT SMALL THINGS.

Science.gov (United States)

Lawson, Ian

2016-03-20

This paper investigates the way in which Robert Hooke constructed his microscopical observations. His Micrographia is justifiably famous for its detailed engravings, which communicated Hooke's observations of tiny nature to his readers, but less attention has been paid to how he went about making the observations themselves. In this paper I explore the relationship between the materiality of his instrument and the epistemic images he produced. Behind the pictures lies an array of hidden materials, and the craft knowledge it took to manipulate them. By investigating the often counter-theoretical and conflicting practices of his ingenious microscope use, I demonstrate the way in which Hooke crafted the microworld for his readers, giving insight into how early modern microscopy was understood by its practitioners and audience.

The role of big five factors on predicting job crafting propensities amongst administrative employees in a South African tertiary institution

Directory of Open Access Journals (Sweden)

Clement Bell

2016-04-01

Full Text Available Orientation: Personality provides a foundation for understanding employee job behaviours. It determines and reflects how they respond to their work situations. There is a shortage of previous researches that have specifically dealt with the predictive role of personality on job crafting. Job crafting is also a significantly new concept in the South African work context. It has both positive and negative consequences on employee job behaviours. Research purpose: The present study investigated the role of big five factors on predicting job crafting propensities amongst administrative employees in Alice, South Africa. Motivation for the study: The present study aimed to determine the role of big five factors on predicting job crafting propensities amongst administrative employees. It was premised on previous research that the big five factors are associated with many employee job behaviours. Research approach, design and method: The present study employed a quantitative, crosssectional research design with a sample of 246 administrative employees in Alice, South Africa. A biographical questionnaire, a Big Five Inventory, and a job crafting questionnaire were used to collect data. Main findings: The findings showed that big five factors of Conscientiousness, Extraversion, Agreeableness, Openness to experience and Neuroticism play a significant role in predicting job crafting propensities. Practical implications: The present study suggests that big five factors of Conscientiousness, Extraversion, Agreeableness, Openness to experience and Neuroticism have a predictive role on job crafting behaviours. Managers of tertiary institutions can therefore consider these big five personalities to understand and predict the impacts of their job design strategies on administrative employees’ behaviours. Contribution: The contribution of the study was significant in that it contributed to research literature representing the influence of the big five factors in

Predicting Job Crafting From the Socially Embedded Perspective: The Interactive Effect of Job Autonomy, Social Skill, and Employee Status

OpenAIRE

Sekiguchi, Tomoki; Li, Jie; Hosomi, Masaki

2017-01-01

Job crafting represents the bottom-up process of change employees make in their work boundaries and plays an important role in the management of organizational change. Following the socially embedded perspective, we examine the roles of job autonomy, social skill, and employee status in predicting job crafting. Study 1 with a sample of 509 part-time employees found that job autonomy and social skill not only directly but also interactively influenced job crafting. Study 2 with a sample of 564...

The influence of future time perspective on work engagement and job performance: the role of job crafting.

NARCIS (Netherlands)

Kooij, T.A.M.; Tims,; Akkermans,

2017-01-01

This two-wave study aimed to examine future time perspective (FTP) as an antecedent of job crafting, and in turn job crafting as a mediator in associations between FTP and work outcomes. Based on the lifespan socio-emotional selectivity theory, we expected that open-ended and limited FTP would evoke

Butylated caffeic acid: An efficient novel antioxidant; Ácido cafeico butilado: un nuevo y eficaz antioxidante.

Energy Technology Data Exchange (ETDEWEB)

Shi, G.; Liao, X.; Olajide, T.M.; Liu, J.; Jiang, X.; Weng, X.

2017-07-01

A novel antioxidant, butylated caffeic acid (BCA) was rationally designed by adding a tert-butyl group to caffeic acid, which was synthesized at a high yield (36.2%) from 2-methoxy-4-methylphenol (1) by a four-step reaction including Friedel-Crafts alkylation, bromine oxidation, ether bond hydrolysis and Knoevenagel condensation. Its antioxidant capacity was much stronger than common commercial antioxidant tert-butyl hydroquinone (TBHQ) and its mother compound, caffeic acid, in both rancimat and deep frying tests. When investigated via the DPPH method, the antioxidant capacity of BCA was almost equal to TBHQ, but lower than caffeic acid. BCA could be a potentially strong antioxidant, especially for food processing at high temperatures such as deep frying and baking. [Spanish] Se diseñó razonadamente un nuevo antioxidante, el ácido cafeico butilado (BCA) mediante la adición de un grupo terc-butilo al ácido cafeico, que se sintetizó con un alto rendimiento (36,2%) a partir de 2-metoxi-4-metilfenol, reacción de Friedel-Crafts, oxidación de bromo, hidrólisis del enlace éter y condensación de Knoevenagel. Su capacidad antioxidante fué mucho más fuerte que la del antioxidante comercial mas común el terc-butil hidroquinona (TBHQ) y la de su compuesto madre el ácido cafeico, tanto en rancimat como en pruebas de fritura. Cuando se investigó mediante el método DPPH, la capacidad antioxidante de BCA fue casi igual a TBHQ, pero menor que la del ácido cafeico. BCA podría ser un fuerte antioxidante potencial, especialmente para el procesamiento de alimentos a alta temperatura, tales como freír y hornear.

Microwave-assisted one-pot radiosynthesis of 2′-deoxy-2′-[18F]fluoro-5-methyl-1-β-D-arabinofuranosyluracil ([18F]-FMAU)

International Nuclear Information System (INIS)

Chen, Kai; Li Zibo; Conti, Peter S.

2012-01-01

Objectives: [ 18 F]-FMAU is a PET tracer being evaluated for imaging cell proliferation. Current multi-step procedures of [ 18 F]-FMAU synthesis are time-consuming, resulting in low radiochemical yield and inconvenient applications for the clinic. We have previously reported the use of Friedel-Crafts catalysts for an improved synthesis of [ 18 F]-FMAU. In this study, we investigated the efficiency of microwave-assisted radiosynthesis of [ 18 F]-FMAU in comparison with conventional thermal conditions. Methods: A simplified one-pot synthesis of [ 18 F]-FMAU was developed under microwave conditions. Various reaction times, temperatures, and microwave powers were systematically explored to optimize the coupling reaction of 2-deoxy-2-[ 18 F]fluoro-1,3,5-tri-O-benzoyl-D-arabinofuranose ([ 18 F]-sugar) and bis-2,4-(trimethylsilyloxy)-5-methyluracil (silylated uracil) in the presence of a Friedel-Crafts catalyst, trimethylsilyl trifluoromethanesulfonate (TMSOTf). Results: Microwave significantly enhanced the coupling efficiency of [ 18 F]-sugar and silylated uracil by reducing the reaction time to 10 min (6-fold reduction as compared to conventional heating) at 95 °C. Base hydrolysis followed by high-performance liquid chromatography purification produced the desired [ 18 F]-FMAU. The overall radiochemical yield was 20 ± 4% (decay corrected, n = 3). Radiochemical purity was > 99% and specific activity was > 400 mCi/μmol. The α/β anomer ratio was 1:2. The radiosynthesis time was about 90 min from the end of bombardment. Conclusions: A reliable microwave-assisted approach has been developed for routine synthesis of [ 18 F]-FMAU. The new approach affords a simplified process with shorter synthesis time and higher radiochemical yield as compared to conventional heating. A fully automated microwave-assisted synthesis of [ 18 F]-FMAU can be readily achieved under new reaction conditions.

78 FR 52872 - Airworthiness Directives; 328 Support Services GmbH (Type Certificate Previously Held by AvCraft...

Science.gov (United States)

2013-08-27

... Services GmbH (Type Certificate Previously Held by AvCraft Aerospace GmbH; Fairchild Dornier GmbH; Dornier... certain 328 Support Services GmbH (Type Certificate Previously Held by AvCraft Aerospace GmbH; Fairchild... send any written relevant data, views, or arguments about this proposed AD. Send your comments to an...

Regular versus cutback-related change: the role of employee job crafting in organizational change contexts of different nature

NARCIS (Netherlands)

Petrou, P.; Demerouti, E.; Xanthopoulou, D.

2017-01-01

The present study addresses how job characteristics (e.g., autonomy, workload, and their interaction) relate to employee job crafting (i.e., seeking resources, seeking challenges, and reducing demands), and whether job crafting relates to employee work-related well-being (i.e., work engagement and

ePerformance: Crafting, Rehearsing, and Presenting the ePortfolio Persona

Science.gov (United States)

Ramírez, Kimberly

2011-01-01

"ePerformance: Crafting, Rehearsing, and Presenting the ePortfolio Persona" exposes vital intersections between pedagogy and performance to reveal how using ePortfolio encourages not only student-centered learning, but facilitates collaboration through cooperative exchanges. Productive interactivity with audiences who actively influence…

Arts, Crafts and Indigenous Industries in Nigeria | Yakubu | Journal ...

African Journals Online (AJOL)

The paper is illustrative of the cultural wealth of Nigeria in terms of arts and crafts. It provides a descriptive picture of the various characteristics of the genres in the past and present and in traditional as well as modern Nigerian communities. It functions within religious, intellectual, and socio-economic contexts. Hence ...

Synthesis and characterization of new polyketones and copolyketones based on Difurfurylidenecyclopentanone

International Nuclear Information System (INIS)

Al-Muaikel, Nayef S.; El-Emary, Talaat I.; Aly, Kamal I.

2006-01-01

A new interesting class of polyketones and copolyketones were synthesized via Friedel-Crafts reaction through the polymerization of the monomer 1 with different diacid chlorides. The model compound 3 was synthesized by reacting 1 with benzoyl chloride and characterized by H-NMR, IR and elemental analyses. The poly- and copolyketones were insoluble in most organic solvents but easily soluble in protic solvents. The thermal properties of these poly- and copolyketones were evaluated and correlated to their structural units by TGA and DSC measurements, and had inherent viscosities 0.19-0.56 dlg. The crystallinity of some polymers were tested by X-ray analyses; also the morphological properties of selected examples of poly- and copolyketones were detected by SEM. (author)

PEDAGOGICAL SUPPORT OF GIFTED STUDENTS FROM CARPATHIAN MOUNTAIN AREAS BY MEANS OF FOLK ART CRAFTS

Directory of Open Access Journals (Sweden)

Iryna Kozlovska

2015-04-01

Full Text Available This paper, presented at the Conference Plenary the possibilities of pedagogical support of gifted students from vocational schools, living in the mountainous areas of the Carpathians. Education of talented and gifted students requires pedagogical support. The specific conditions, in which Carpathian students live, require the development of pedagogical support of their abilities. New approaches to teaching science, which led to the selection of topics of this article are described. Gifted personalities differ from their peers by same criterias. The social aspect of the problem remains in the shadow: not to be ashamed of your talent and not to compare it with cliches. And goals of educators and psychologists have to be slightly different as is common. Widespread  Carpathian crafts include: embroidery, artistic textiles producing, carpet manufacture, carving, pottery, metalworking, fabric painting, knitting, lace, artistic weaving, artistic working of  leather, stones, bones and horns. Nowadays, some detachment of mountainous regions has significantly reduced due to new means of communication, including the Internet. The possibilities of colleges in mountainous regions still cannot reach the level of the colleges in capital. In Carpathian and Prykrpattya regions there is a number of vocational schools of art direction. During the execution of creative work in class industrial training necessary for students to comply with the rules of relationships form and decoration in various ways: decorative motif obeys the functional form, enriching it artistic and creative solutions, utilitarian function obeys the decorative motif Products, the form of the product can be extremely decorative, artistic and creative product solutions focused on practical value and decorative value of the product. Pedagogical support of gifted students from art colleges in the Carpathian region has extremely wide range of opportunities. The problem of finding and nurturing

Ghanaian Craft Exporters in the Global Market: Binding and Missing ...

African Journals Online (AJOL)

Agribotix GCS 068

The paper explored the benefits that accrue to Ghanaian craft exporters from subcontracting ties .... viewed as important channels for providing effective and cheaper bases for economic development ... member negatively affect the reputation and cohesion of the group and therefore ...... Unpublished PhD Thesis, University.

Comparison of Survival and Safety Requirements in European Union for Recreational Craft Inspections. A Spanish Case Study

Directory of Open Access Journals (Sweden)

J. Torralbo

2014-03-01

Full Text Available Statistical data shows that a large number of maritime accidents are related to recreational craft. For instance, in Spain, more than fifty percent of the emergencies are related to pleasure boats at sea. Recreational craft marketed in the EU must comply with harmonized technical safety and environmental requirements defined by Directive 94/25/EC, as amended in 2003. On 28 December 2013, the new recreational craft directive 2013/53/EU was published in the Official Journal of the European Union. EU Member States have until 18 January 2016 to amend their national legislation and transpose the new directive. The current directive 94/25/EC as amended by directive 2003/44/EC will be repealed on 18 January 2016, after the full application of the new text. Although this directive, there is not a clear coordination and equivalence among the EU countries according to the survival and safety equipment compulsory for recreational crafts. The main purpose of this paper is to analyze and compare the types of survey / inspections to be carried in pleasure craft (non-commercial use, periodicity and required safety equipment in some member states of the European Union. A case study of Spain is presented. From the results obtained, we can make clear that in the European Union there is a lack of coordination in this area and indicate the need to unify a common pattern in inspections and survival and safety requirements of recreational boats in the EU.

Craft and Conservation: Features of Danish Journalism Culture

DEFF Research Database (Denmark)

Schultz, Ida

This paper presents the field theory of Pierre Bourdieu, discusses how the framework can be used for studying journalism culture, and illustrates the use in a case study of journalism education in Denmark. The first section makes a first attempt to define Journalism Culture as a logic of practice...... of field, capital and habitus to identity craft as a strong capital in the field and conservation as a dominant logic....

Noble gas control room accident filtration system for severe accident conditions (N-CRAFT)

International Nuclear Information System (INIS)

Hill, Axel; Stiepani, Cristoph; Drechsler, Michael

2015-01-01

Severe accidents might cause the release of airborne radioactive substances to the environment of the NPP either due to containment leakages or due to intentional filtered containment venting. In the latter case aerosols and iodine are retained, however noble gases are not retainable by the FCVS or by conventional air filtration systems like HEPA filters and iodine absorbers. Radioactive noble gases nevertheless dominate the activity release depending on the venting procedure and the weather conditions. To prevent unacceptable contamination of the control room atmosphere by noble gases, AREVA GmbH has developed a noble gas control room accident filtration system (CRAFT) which can supply purified fresh air to the control room without time limitation. The retention process is based on dynamic adsorption of noble gases on activated carbon. The system consists of delay lines (carbon columns) which are operated by a continuous and simultaneous adsorption and desorption process. CRAFT allows minimization of the dose rate inside the control room and ensures low radiation exposure to the staff by maintaining the control room environment suitable for prolonged occupancy throughout the duration of the accident. CRAFT consists of a proven modular design either transportable or permanently installed. (author)

The Preservation of Traditional Knowledge and the Cultural Expression of Craft Rumah Gadang’s Walls as the Intellectual Property Of West Sumatera

Directory of Open Access Journals (Sweden)

Riza Armilia

2018-01-01

Full Text Available This study discusses the problems of the preservation of Minangkabau craft culture, especially the problem of Intellectual Property Rights in the form of traditional knowledge that is on the craft of Rumah Gadang’s walls. The method of this research is qualitative. The informant of this study is determined by using purposive sampling. The chosen informants that are people involved in crafting of Rumah Gadang’s walls and the Department of Tourism of West Sumatra Province. This research was conducted at Minangkabau representative area of Luhak Nan Tigo (Agam, Tanah Datar, Lima Puluh Kota. The results of the study shows the extinction of craft of Rumah Gadang's walls was caused by the development factor of modern society's mindset, thus eliminating the value of a local culture of desire to learn old local culture. Moreover, the history and the topic of craft of Rumah Gadang's walls are deleted from Muatan Lokal Subject from the elementary to college level. Besides, the absence of efforts of local governments in trying to preserve the cultural values contained in traditional of craft of Rumah Gadang’s walls.

Ghanaian Craft Exporters in the Global Market: Binding and Missing ...

African Journals Online (AJOL)

The strong positions of buyers and export agents in the craft value chain enable them to apply sanctions to extract compliance from the exporters whereas the weak position of the export vendors implies the lack of sanctioning authority over the rogue artisan subcontractors. The government's promotion programmes could ...

Robust formation control of marine surface craft using Lagrange multipliers

DEFF Research Database (Denmark)

Ihle, Ivar-Andre F.; Jouffroy, Jerome; Fossen, Thor I.

2006-01-01

This paper presents a formation modelling scheme based on a set of inter-body constraint functions and Lagrangian multipliers. Formation control for a °eet of marine craft is achieved by stabilizing the auxiliary constraints such that the desired formation con¯guration appears. In the proposed fr...

Standardized Laboratory Test Requirements for Hardening Equipment to Withstand Wave Impact Shock in Small High Speed Craft

Science.gov (United States)

2017-02-06

axes. DRAFT NSWCCD-80-TR-2017/002 8 REFERENCES 1. Du Cane, P., The Planing Performance, Pressures , and Stresses in a High -Speed...Characterization of Individual Wave Slam Acceleration Responses for High Speed Craft, Proceedings of the 29 th American Towing Tank Conference...Methodologies for Small High -Speed Craft Structure, Equipment, Shock Isolation Seats, and Human Performance At-Sea, 10 th Symposium on High

25 CFR 141.27 - Trade in imitation Indian crafts prohibited.

Science.gov (United States)

2010-04-01

... 25 Indians 1 2010-04-01 2010-04-01 false Trade in imitation Indian crafts prohibited. 141.27 Section 141.27 Indians BUREAU OF INDIAN AFFAIRS, DEPARTMENT OF THE INTERIOR FINANCIAL ACTIVITIES BUSINESS PRACTICES ON THE NAVAJO, HOPI AND ZUNI RESERVATIONS General Business Practices § 141.27 Trade in imitation...

Sustainable Innovation of Glass Design and Craft

DEFF Research Database (Denmark)

Sparre-Petersen, Maria

2014-01-01

, reduction of production and transportation of new glass is desirable (Environmental Protection Agency, 2012), and can be realized by recycling glass, that has already been manufactured, used and collected for recycling, but has ended up in landfills due to the market mechanisms that allow manufacturing...... and deposition of glass is reduced Today glass production predominantly consists of window glass, glass wool for insulation and containers such as bottles and jelly jars. Glass craft and design hold only a fraction of the market. Still there is reason to believe that generation and implementation of new...

Environmental Support to Amphibious Craft, Patrol Boats, and Coastal Ships: An Annotated Bibliography

National Research Council Canada - National Science Library

Bachmann, Charles M; Fusina, Robert A; Nichols, C. R; McDermid, Jack

2008-01-01

This annotated bibliography is a selection of citations to books, articles, documents, and data bases highlighting environmental conditions that impact the safety and performance of amphibious craft...

PEGylation of SPIONs by polycondensation reactions: a new strategy to improve colloidal stability in biological media

International Nuclear Information System (INIS)

Viali, Wesley Renato; Silva Nunes, Eloiza da; Santos, Caio Carvalho dos; Silva, Sebastião William da; Aragón, Fermin Herrera; Coaquira, José Antonio Huamaní; Morais, Paulo César; Jafelicci, Miguel

2013-01-01

In this study, we report on a new route of PEGylation of superparamagnetic iron oxide nanoparticles (SPIONs) by polycondensation reaction with carboxylate groups. Structural and magnetic characterizations were performed by X-ray diffractometry (XRD), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), and vibrating sample magnetometry (VSM). The XRD confirmed the spinel structure with a crystallite average diameter in the range of 3.5–4.1 nm in good agreement with the average diameter obtained by TEM (4.60–4.97 nm). The TGA data indicate the presence of PEG attached onto the SPIONs’ surface. The SPIONs were superparamagnetic at room temperature with saturation magnetization (M S ) from 36.7 to 54.1 emu/g. The colloidal stability of citrate- and PEG-coated SPIONs was evaluated by means of dynamic light scattering measurements as a function of pH, ionic strength, and nature of dispersion media (phosphate buffer and cell culture media). Our findings demonstrated that the PEG polymer chain length plays a key role in the coagulation behavior of the Mag-PEG suspensions. The excellent colloidal stability under the extreme conditions we evaluated, such as high ionic strength, pH near the isoelectric point, and cell culture media, revealed that suspensions comprising PEG-coated SPION, with PEG of molecular weight 600 and above, present steric stabilization attributed to the polymer chains attached onto the surface of SPIONs

PEGylation of SPIONs by polycondensation reactions: a new strategy to improve colloidal stability in biological media

Energy Technology Data Exchange (ETDEWEB)

Viali, Wesley Renato; Silva Nunes, Eloiza da; Santos, Caio Carvalho dos [Universidade Estadual Paulista, Laboratorio de Materiais Magneticos e Coloides, Departamento de Fisico-quimica, Instituto de Quimica (Brazil); Silva, Sebastiao William da; Aragon, Fermin Herrera; Coaquira, Jose Antonio Huamani; Morais, Paulo Cesar [Universidade de Brasilia, Instituto de Fisica, Nucleo de Fisica Aplicada (Brazil); Jafelicci, Miguel, E-mail: jafeli@iq.unesp.br [Universidade Estadual Paulista, Laboratorio de Materiais Magneticos e Coloides, Departamento de Fisico-quimica, Instituto de Quimica (Brazil)

2013-08-15

In this study, we report on a new route of PEGylation of superparamagnetic iron oxide nanoparticles (SPIONs) by polycondensation reaction with carboxylate groups. Structural and magnetic characterizations were performed by X-ray diffractometry (XRD), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), and vibrating sample magnetometry (VSM). The XRD confirmed the spinel structure with a crystallite average diameter in the range of 3.5-4.1 nm in good agreement with the average diameter obtained by TEM (4.60-4.97 nm). The TGA data indicate the presence of PEG attached onto the SPIONs' surface. The SPIONs were superparamagnetic at room temperature with saturation magnetization (M{sub S}) from 36.7 to 54.1 emu/g. The colloidal stability of citrate- and PEG-coated SPIONs was evaluated by means of dynamic light scattering measurements as a function of pH, ionic strength, and nature of dispersion media (phosphate buffer and cell culture media). Our findings demonstrated that the PEG polymer chain length plays a key role in the coagulation behavior of the Mag-PEG suspensions. The excellent colloidal stability under the extreme conditions we evaluated, such as high ionic strength, pH near the isoelectric point, and cell culture media, revealed that suspensions comprising PEG-coated SPION, with PEG of molecular weight 600 and above, present steric stabilization attributed to the polymer chains attached onto the surface of SPIONs.

Composite templates synthesis of mesoporous titania from industrial titanyl sulfate solution under external outfields

International Nuclear Information System (INIS)

Tian Congxue

2008-01-01

The precursors of mesoporous titania were synthesized via supra-molecular self-assembly route induced by composite templates (CTAB/P-123) from industrial titanyl sulfate solution under ultrasonic irradiation, microwave and hydrothermal condition. The hydrolysis and polycondensation rates of TiOSO 4 solution were controlled by adjusting the pH value at about 1.0. Mesoporous titania with anatase phase was obtained after templates removal by calcinations. The as-prepared powder was characterized by X-ray diffraction (XRD), N 2 isothermal adsorption-desorption, HRTEM and SAD. External outfields with enhancing polar action and soft hydrothermal condition were beneficial to prepare better mesoporous TiO 2 . Ultrasonic vibration promoted the formation of mesoporous structure. Under microwave irradiation, mesoporous TiO 2 was synthesized with BET specific surface area of 190.6 m 2 g -1 , average pore diameter of 2.57 nm and crystal size of 13.65 nm. And ultrasonic irradiation, microwave and hydrothermal conditions were making for forming and stabilizing the mesoporous structure

The role of work-related needs in the relationship between job crafting, burnout and engagement

Directory of Open Access Journals (Sweden)

Fabrice Travaglianti

2016-08-01

Full Text Available Orientation: Knowing that it is imperative to better understand the antecedents and consequences of needs-supplies fit, the present research had two main objectives. Firstly we wanted to extend our knowledge about traditional psychological needs, for example highlighted through the Self-Determination Theory, by presenting more specific work-related needs. Secondly, following the new directions of organisational fit theories, we wanted to better understand how individuals make sense of fit. Research purpose: The purpose of this study is to propose more specific work-related needs in terms of employment quality and to test job crafting as an antecedent of needs-supplies fit (NS fit. We tested the double mediating role of NS fit (i.e. specific: based on more specific work-related needs, and general: based on global job perceptions between job crafting and individual outcomes namely burnout and work engagement. Motivation for the study: By taking into account more specific work-related needs, this study aimed to add more specific information to better help predict well-being at work. Moreover, the present research responds to the need to better understand how individuals make sense of fit. Research design, approach, and method: Data were collected in a Belgian Public Federal Service (N = 1500. Our research model was tested using Structural Equation Modelling with Mplus. Main findings: Results show, (1 that specific NS fit perception was positively related to a global NS fit perception and (2 the partial mediating role (specific and general of NS fit between job crafting and burnout and work engagement. Practical/managerial implications: Managers should encourage crafting behaviours and should know their team and that team’s specific needs. Contribution/added-value: By taking into account more specific work-related needs, our study suggests that needs-supplies may have more than one dimension. Moreover, it shows that job crafting is a way to

Ergonomic Analysis of the Work Condition in Aluminum Crafts Industry

Science.gov (United States)

Soewardi, H.; Taufiq, A.; Pradipta, T.

2017-12-01

Indonesia has plenty of abundant natural wealth. This natural wealth produces natural materials that can be utilized as a craft product. The craft workers generally still work manually and the work is done repeatedly in one cycle so it is very susceptible to musculoskeletal disorders. Musculoskeletal disorders will cause decrease of worker’s effectiveness and efficiency in completing the task. Thus, this fact has some adverse impact for the company. The purpose of this study is to analyze some task in manufacturing a traditional cooking tool (griddle) which encompasses mold of the griddle, refine of the griddle and the finishing touch by using the Occupational Repetitive Action Index (OCRA index) method. This method consists of high frequency movements, large forces, awkward postures, insufficient resting time and other factor such as vibration. Result of this study shows that in the molding operation, the worker has uncertain and medium risk on right hand in manufacturing small and large size of griddle with OCRA index is 2.5 and 5.3 respectively. In the refining operation the worker has light and medium risk on left hand in manufacturing small and large size with OCRA index is 3.6 and 5.8 using grinding machine and 5.8, 5.2, 6.3 and 5.0 using miser tool. In finishing operation, the worker has high risk on right hand in numbering of code griddle and has medium risk on right hand and medium on left hand in labeling with OCRA index is 9, 6.1 and 6.8 While in assembling operation the worker has no risk. Score that it indicates the risk level of the task in such job. Thus the following actions are to improve the work condition ergonomicly in all operation in alumunium craft.

Beyond Talent: John Irving and the Passionate Craft of Creativity.

Science.gov (United States)

Amabile, Teresa M.

2001-01-01

Uses the thoughts and work of novelist John Irving to illustrate the prominence of non-talent components in the componential model of creativity, explaining that raw talent, clever imagination, and a creative personality are insufficient to ensure creative success and that hard work and love of a craft (intrinsic motivation) are at least as…

Craft villages and tourism development, a case study in Phu Quoc island of Vietnam

Directory of Open Access Journals (Sweden)

Hieu Vu Minh

2017-05-01

Full Text Available Craft tourism is attracting many domestic and foreign tourists. In recent years in Vietnam, craft villages have exploited their potentials in tourism industry. For many different causes, tourism activities have yet reached expectations and their potentials for tourism development. This paper is to review their currents, tourism potentials and limitations and then formulate recommendations to the tourism development in Phu Quoc island. The data for this paper are from two sources. Secondary data were collected from the vast literature and journals. Primary data were from interviews with village owners, related authorities, tourists, tourism corporate, etc. and results serve as guidelines to develop the tourism industry and management.

Comparison of hand-craft feature based SVM and CNN based deep learning framework for automatic polyp classification.

Science.gov (United States)

Younghak Shin; Balasingham, Ilangko

2017-07-01

Colonoscopy is a standard method for screening polyps by highly trained physicians. Miss-detected polyps in colonoscopy are potential risk factor for colorectal cancer. In this study, we investigate an automatic polyp classification framework. We aim to compare two different approaches named hand-craft feature method and convolutional neural network (CNN) based deep learning method. Combined shape and color features are used for hand craft feature extraction and support vector machine (SVM) method is adopted for classification. For CNN approach, three convolution and pooling based deep learning framework is used for classification purpose. The proposed framework is evaluated using three public polyp databases. From the experimental results, we have shown that the CNN based deep learning framework shows better classification performance than the hand-craft feature based methods. It achieves over 90% of classification accuracy, sensitivity, specificity and precision.

The development and validation of a job crafting measure for use with blue-collar workers

DEFF Research Database (Denmark)

Nielsen, Karina; Abildgaard, Johan Simonsen

2012-01-01

Abstract Job crafting describes a set of proactive behaviours in which employees may engage to shape their work in order to minimize hindering job demands and maximize resources and challenging demands. Such behaviours may be particularly important among blue-collar workers whose jobs are charact......Abstract Job crafting describes a set of proactive behaviours in which employees may engage to shape their work in order to minimize hindering job demands and maximize resources and challenging demands. Such behaviours may be particularly important among blue-collar workers whose jobs...... are characterized by poor working conditions and low well-being. We present the development and adaptation of a job crafting measure that may be used among blue-collar workers, based on an existing scale by Tims, Bakker, and Derks (2012) that was not specifically developed for blue-collar workers. We test......, increasing social job resources, increasing quantitative demands and decreasing hindering job demands. These can be reliably measured with 15 items. The measure shows acceptable discriminant and criterion validity, and test-retest reliability. The findings extend the application of the original questionnaire...

New technologies for fire suppression on board naval craft, FiST

NARCIS (Netherlands)

Rahm, M.; Hiltz, J.; Wal, R. van der; Hertzberg, T.; Lindström, J.

2014-01-01

For three years Canada, Sweden and the Netherlands have been investigating new technologies for fire suppression on board naval crafts within the FiST project. The project has focused on a number of technologies. These included the evaluation of water based fire suppression systems and in particular

Molecular modeling of the structure and dynamics of the interlayer and surface species of mixed-metal layered hydroxides: Chloride and water in hydrocalumite (Friedel's salt)

Energy Technology Data Exchange (ETDEWEB)

KALINICHEV,ANDREY G.; KIRKPATRICK,R. JAMES; CYGAN,RANDALL T

2000-01-17

The dynamical behavior of Cl{sup {minus}} and H{sub 2}O molecules in the interlayer and on the (001) surface of the Ca-aluminate hydrate hydrocalumite (Friedel's salt) over a range of temperatures from {minus}100 to 300 C is studied using the technique of isothermal-isobaric molecular dynamics computer simulations. This phase is currently the best available model compound for other, typically more disordered, mixed-metal layered hydroxides. The computed crystallographic parameters and density are in good agreement with available X-ray diffraction data and the force field developed for these simulations preserves the structure and density to within less than 2% of their measured values. In contrast to the highly ordered arrangement of the interlayer water molecules interpreted from the X-ray data, the simulations reveal significant dynamic disorder in water orientations. At all simulated temperatures, the interlayer water molecules undergo rapid librations (hindered hopping rotations) around an axis essentially perpendicular to the layers. This results in breaking and reformation of hydrogen bonds with the neighboring Cl{sup {minus}} anions and in a time-averaged nearly uniaxial symmetry at Cl{sup {minus}}, in good agreement with recent {sup 35}Cl NMR measurements. Power spectra of translational, vibrational, and vibrational motions of interlayer and surface Cl{sup {minus}} and H{sub 2}O were calculated as Fourier transforms of the atomic velocity autocorrelation functions and compared with the corresponding spectra and dynamics for a bulk aqueous solution. The ordered interlayer space has significant effects on the motions. Strong electrostatic attraction between interlayer water molecules and Ca atoms in the principal layer makes the Ca{hor_ellipsis}OH{sub 2} bond direction the preferred axis for interlayer water librations. The calculated diffusion coefficient of Cl{sup {minus}} as an outer-sphere surface complex is almost three times that of inner-sphere Cl

Electricity solutions for a carbon-constrained future

Energy Technology Data Exchange (ETDEWEB)

Schimmoller, B. [EPRI (United States)

2007-09-30

A successful response to the threat of climate change will require substantial technical work as well as practical problem solving in the political, regulatory and public areas. EPRI's 2007 Summer Seminar brought together regulatory, industry, academic, and policy leaders to discuss critical issues and delineate the initiating actions required to begin resolving the climate dilemma. Although the global nature of climate change amplifies its complexity and uncertainly, technology must play a leading role in winnowing opportunity from challenge and crafting a viable solution. 6 figs.

Artisans, Architects, and Apprentices: Valuing the Craft of Teacher Education

Science.gov (United States)

Boyd Potter, Rachel

2016-01-01

In this article, Boyd Potter describes teacher education faculty as both artisans and architects. As artisans, it is not only their products that enrich us; it is the art of the craft itself that shapes their work. An artisan is valued for the creative endeavor, and not solely the masterpiece. Preparing a quality teacher is not easy work, while…

Hull Surface Information Retrieval and Optimization of High Speed Planing Craft

International Nuclear Information System (INIS)

Ayob, A F; Wan Nik, W B; Ray, T; Smith, W F

2012-01-01

Traditional approach on ship design involve the use of a method which takes a form that was earlier called the 'general design diagram' and is now known as the 'design spiral' – an iterative ship design process that allows for an increase in complexity and precision across the design cycle. Several advancements have been made towards the design spiral, however inefficient for handling complex simultaneous design changes, especially when later variable changes affect the ship's performance characteristics evaluated in earlier stages. Reviewed in this paper are several advancements in high speed planing craft design in preliminary design stage. An optimization framework for high speed planing craft is discussed which consist of surface information retrieval module, a suite of state-of-the-art optimization algorithms and standard naval architectural performance estimation tools. A summary of the implementation of the proposed hull surface information retrieval and several case studies are presented to demonstrate the capabilities of the framework.

Coupling of carboxylic groups onto the surface of polystyrene parts during fused filament fabrication

Science.gov (United States)

Nagel, Jürgen; Zimmermann, Philipp; Schubert, Oliver; Simon, Frank; Schlenstedt, Kornelia

2017-11-01

A method for the fabrication of polystyrene parts, modified with carboxylic groups during Fused Filament Fabrication (FFF), is being introduced. This method is based on the application of a thin layer of a reactive polymer carrying carboxylic groups on a substrate surface. A polystyrene film is printed on top of this layer. During contact between the hot melt and the reactive layer, a Friedel-Crafts type acylation using a green catalyst takes place, which attaches the reactive polymer to the polystyrene surface. The modified surface is homogeneous, hydrophilic and able to bind copper ions. The method could be used to fabricate unique parts of polystyrene with tailored surface functionalisation. It could be applied for laboratory use, e.g. for the manufacture of lab-on-a-chip devices.

Butylated caffeic acid: An efficient novel antioxidant

Directory of Open Access Journals (Sweden)

G. Shi

2017-09-01

Full Text Available A novel antioxidant, butylated caffeic acid (BCA was rationally designed by adding a tert-butyl group to caffeic acid, which was synthesized at a high yield (36.2% from 2-methoxy-4-methylphenol by a four-step reaction including Friedel-Crafts alkylation, bromine oxidation, ether bond hydrolysis and Knoevenagel condensation. Its antioxidant capacity was much stronger than common commercial antioxidant tert-butyl hydroquinone (TBHQ and its mother compound, caffeic acid, in both rancimat and deep frying tests. When investigated via the DPPH method, the antioxidant capacity of BCA was almost equal to TBHQ, but lower than caffeic acid. BCA could be a potentially strong antioxidant, especially for food processing at high temperatures such as deep frying and baking.

Butylated caffeic acid: An efficient novel antioxidant

International Nuclear Information System (INIS)

Shi, G.; Liao, X.; Olajide, T.M.; Liu, J.; Jiang, X.; Weng, X.

2017-01-01

A novel antioxidant, butylated caffeic acid (BCA) was rationally designed by adding a tert-butyl group to caffeic acid, which was synthesized at a high yield (36.2%) from 2-methoxy-4-methylphenol (1) by a four-step reaction including Friedel-Crafts alkylation, bromine oxidation, ether bond hydrolysis and Knoevenagel condensation. Its antioxidant capacity was much stronger than common commercial antioxidant tert-butyl hydroquinone (TBHQ) and its mother compound, caffeic acid, in both rancimat and deep frying tests. When investigated via the DPPH method, the antioxidant capacity of BCA was almost equal to TBHQ, but lower than caffeic acid. BCA could be a potentially strong antioxidant, especially for food processing at high temperatures such as deep frying and baking. [es

Deep Visual Attributes vs. Hand-Crafted Audio Features on Multidomain Speech Emotion Recognition

Directory of Open Access Journals (Sweden)

Michalis Papakostas

2017-06-01

Full Text Available Emotion recognition from speech may play a crucial role in many applications related to human–computer interaction or understanding the affective state of users in certain tasks, where other modalities such as video or physiological parameters are unavailable. In general, a human’s emotions may be recognized using several modalities such as analyzing facial expressions, speech, physiological parameters (e.g., electroencephalograms, electrocardiograms etc. However, measuring of these modalities may be difficult, obtrusive or require expensive hardware. In that context, speech may be the best alternative modality in many practical applications. In this work we present an approach that uses a Convolutional Neural Network (CNN functioning as a visual feature extractor and trained using raw speech information. In contrast to traditional machine learning approaches, CNNs are responsible for identifying the important features of the input thus, making the need of hand-crafted feature engineering optional in many tasks. In this paper no extra features are required other than the spectrogram representations and hand-crafted features were only extracted for validation purposes of our method. Moreover, it does not require any linguistic model and is not specific to any particular language. We compare the proposed approach using cross-language datasets and demonstrate that it is able to provide superior results vs. traditional ones that use hand-crafted features.

High solute rejecting membranes for reverse osmosis: Polyetheramide hydrazide

International Nuclear Information System (INIS)

Bindal, R.C.; Ramachandhran, V.; Misra, B.M.; Ramani, M.P.S.

1991-01-01

Synthesis of benzhydrazide polymers and determination of reverse osmosis properties of their membranes were reported earlier. Their performance was not adequate for seawater desalination or for high radioactive decontamination factors (DF). The same hydrazide polymers modified by incorporation of additional monomers with ether linkages were synthesized by low temperature polycondensation of freshly prepared m-amino benzhydrazide, p-amino benzhydrazide, and 4,4'-diamino diphenyl ether, with isophthaloyl chloride and terephthaloyl chloride in dimethyl acetamide solvent. A series of film-forming polymers prepared by altering the molar ratios of the reacting monomers were characterized in terms of percent moisture regain, inherent viscosity, solubility parameters, and interfacial sorption characteristics. Asymmetric membranes prepared from these polymer samples were characterized in terms of the pure water permeability constant and the solute transport parameter, and were tested for their reverse osmosis performance. An optimum mole ratio of reaching monomers has been identified for the synthesis of polymer and the resulting membrane offered the best performance for reverse osmosis (salt rejection as high as 99.4% for 3.5% sodium chloride solution). The incorporation of aromatic ether linkages in the polyamide benzhydrazide polymeric chains appears to alter the polar and nonpolar character of the bulk polymer, and also the membrane solution interface characteristics, resulting in enhanced solute separation. These membranes appear to be potential candidates for single-stage seawater desalination and also for a variety of industrial effluent treatment applications for significantly high DF radioactive effluent treatment

Synthesis and characterization of poly(lactic acid)/ montmorillonite nanocomposites by in situ polycondensation catalyzed by non-metal-based compound.

Science.gov (United States)

Kaewprapan, Kulwadee; Phattanarudee, Siriwan

2012-01-01

Poly(lactic acid)/montmorillonite nanocomposites were prepared by using non-toxic catalysts, i.e., phthalic acid and succinimide, via in situ polycondensation in presence of silicate. Concentrations of catalysts and clay were varied in a range of 0-3% wt and 0-0.5% wt, respectively. The reaction condition was controlled at 180 degrees C for 24 hr under a reduced pressure. Viscosity average molecular weight of the synthesized polymers and nanocomposites were characterized and compared using an Ubbelohde viscometer. Pattern of silicate distribution in the composites was investigated by X-ray diffraction to correlate with thermal properties evaluated by differential scanning calorimetry and thermogravimetric analysis. The results showed that the addition of catalysts at 2% wt gave the highest product yield (55-60%). The presence of silicate affected on molecular weight reduction, and the diffracted patterns suggested an intercalated structure. With a small amount of added filler, a significant improvement in thermal property and crystallinity of the resultant composites was obtained compared to those of the catalyzed polymers, in which the composites with succinimide exhibited overall better thermal stability and higher crystallinity than the ones prepared with phthalic acid.

Three-Point Flexural Properties of Bonded Reinforcement Elements for Pleasure Craft Decks

Science.gov (United States)

Di Bella, G.; Galtieri, G.; Borsellino, C.

2018-02-01

The aim of this work was both to study the performances of pleasure craft reinforced components, bonded using a structural adhesive, and to compare them with those obtained using over-lamination as joining system, typically employed in the shipbuilding. With such aim, two different lots of components were prepared: in the first lot, the reinforcement structures were laminated directly on the investigated composite components and, in the second one; they were made separately in a mould and, then, bonded to the composite components. This last method allowed to evaluate the introduction of a product/process innovation in a field typically unwilling to innovation, still tied to craft, and non-standardized procedures. The results of bending tests, performed in order to evaluate the mechanical behaviour of the reinforced components, evidenced the goodness of this innovative design choice. Finally, a finite element analysis was performed. [Figure not available: see fulltext.

33 CFR 149.304 - What type and how many survival craft and rescue boats must a manned deepwater port have?

Science.gov (United States)

2010-07-01

... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false What type and how many survival craft and rescue boats must a manned deepwater port have? 149.304 Section 149.304 Navigation and... What type and how many survival craft and rescue boats must a manned deepwater port have? (a) Except as...

The Burden of Craft in Arthroscopic Rotator Cuff Repair: Where Have We Been and Where We Are Going.

Science.gov (United States)

Burkhart, Stephen S

2015-08-01

The rather turbulent history of arthroscopic rotator cuff repair went through stages of innovation, conflict, disruption, assimilation, and transformation that might be anticipated when a new and advanced technology (arthroscopic cuff repair) displaces an entrenched but outdated discipline (open cuff repair). The transition from open to arthroscopic rotator cuff repair has been a major paradigm shift that has greatly benefited patients. However, this technical evolution/revolution has also imposed a higher "burden of craft" on the practitioners of arthroscopic rotator cuff repair. Technological advancements in surgery demand that surgeons accept this burden of craft and master the advanced technology for the benefit of their patients. This article outlines the author's involvement in the development of arthroscopic rotator cuff repair, and it also explores the surgeon's obligation to accept the burden of craft that is imposed by this discipline.

Selling an Energy Efficiency Loan Portfolio in Oregon: Resale of the Craft3 loan portfolio to Self-Help Credit Union

Energy Technology Data Exchange (ETDEWEB)

Thompson, Peter; Borgeson, Merrian; Kramer, Chris; Zimring, Mark; Goldman, Charles

2014-05-30

Under the Clean Energy Works (CEW) program, Craft3 developed a loan product that widened access to financing for homeowners, offered long term funding, and collected repayments through the customer?s utility bill. The program?s success led Craft3 to pursue the sale of the loan portfolio to both mitigate its own risks and replenish funds for lending. This sale breaks new ground for energy efficiency finance and is notable as it was completed even with many novel program design elements. It replenished Craft3?s program capital and uncovered some valuable lessons that may facilitate future transactions. However, the lack of data history and the unproven nature of the loan portfolio meant that Craft3 had to limit the risk of losses to Self-Help, the purchaser of the portfolio. It remains to be seen whether this experience will pave the way for more sales of on-bill energy efficiency loan portfolios. This case study illustrates how certain program design decisions can sometimes both facilitate programmatic objectives and possibly present challenges for the sale of a portfolio of energy efficiency loans.

JEAN CLAUDE RENARD: (POETRY AS CRAFT OF TRANSPARENCY

Directory of Open Access Journals (Sweden)

María del Sagrario Rollán

2015-04-01

Full Text Available The work of Jean-Claude Renard (Toulon 1922- Paris 2002 appears from the beginning marked by the metaphor of the journey - Songs for land lost (1947, and the craft of transparency. The poet begins the journey - that originates in the experience of death and destruction of a world shaken by the war, with a word that transcends the nonsense, and calls for “the country where forgiveness is / and are childhoods “a word that is built in search of human spaces and anticipates them. The adventure through the exercise of Solitude (1951, requirement beyond itself, a kind of internal and painful split: “I am separated from my heart,” releasing it, in turn, to the knowledge of the world and the gift that transfigures. The metamorphosis of the World (1951 takes place in the act of writing itself, for in him a knowledge of the essential reality is given, from which the party of pure celebrated say, “Oh breathing started / in the center of the loaf and snow “. Poetry as craft of transparency J.C. Renard develops in Un autre parole  (1981, prose poetry admirably clarifies its internal relations with theology and mysticism. The poet moves beyond “ailleurs” to a previous or future place of reconciliation and love letters between beings: “One happy pasture / leads above child / each wisdom to your name / and every love your body.”

Job crafting and performance of Dutch and American health care professionals

NARCIS (Netherlands)

Gordon, H.J.; Demerouti, E.; Le Blanc, P.M.; Bipp, T.

2015-01-01

We explore how job demands and job resources are related to job crafting, and how this, in turn, is related to performance in two samples of American (US; N = 70) and Dutch (NL; N = 144) health care professionals (HCP). A cross-sectional, cross-cultural design revealed that US HCP have higher job

Native American Arts and Crafts of the United States. Bibliography 1.

Science.gov (United States)

Indian Arts and Crafts Board, Washington, DC.

The selected readings listed in this annotated bibliography are suggested as an introduction to the varied arts and crafts created from prehistoric to modern times by Native American peoples of the United States. The publications are organized by culture area to encompass major media practiced by Native American artists and craftsmen of these…

Crafting forgiveness accounts after war

DEFF Research Database (Denmark)

Meinert, Lotte; Obika, Julaina; Whyte, Susan Reynolds

2014-01-01

artist, the authors collected personal voice accounts of these ‘social repair’ processes and audio edited them in order to share them with a local public. The editing process raised critical issues regarding ‘editing for effect’, which are of wider relevance for discussions of ethnographic representation...... and social processes of editing past experience. As a way of crafting and controlling material, editing is always ‘for effect’. But the authors were struck by the powerful potentials of this artistic editing and by the difficulty in foreseeing or controlling its consequences among listeners. They suggest...... that personal processes of forgiveness resemble processes of editing, in the sense that past experience is revised and given narrative form, with an effect on the present and future of social relationships. When we edit, we foreground and background segments of data and experience, and cut parts of our...

Career competencies and job crafting: How proactive employees influence their well-being

NARCIS (Netherlands)

Plomp, J.; Tims, M.; Akkermans, J.; Khapova, S.N.; Jansen, P.G.W.; Bakker, A.B.

2016-01-01

Purpose: The purpose of this paper is to bring together job design and career theory in the examination of how proactive employees optimize their well-being (i.e. job satisfaction and perceived health) through job crafting and career competencies. This study offers an integrated account of the

An Empirical Study of the Process of Crafting and Using Definitions

Science.gov (United States)

Little, Angela Jean

2013-01-01

In this dissertation I analyze the process of crafting definitions whose purpose is classification. The context I examine is undergraduate upper-division physical science majors defining and naming sub-categories of a physical phenomenon in the context of a design task over an extended period of time. The goal of the design task is one of…

Overview of craft brewing specificities and potentially associated microbiota.

Science.gov (United States)

Rodhouse, Lindsey; Carbonero, Franck

2017-09-14

The brewing process differs slightly in craft breweries as compared to industrial breweries, as there are fewer control points. This affects the microbiota of the final product. Beer contains several antimicrobial properties that protect it from pathogens, such as low pH, low oxygen and high carbon dioxide content, and the addition of hops. However, these hurdles have limited power controlling spoilage organisms. Contamination by these organisms can originate in the raw materials, persist in the environment, and be introduced by using flavoring ingredients later in the process. Spoilage is a prominent issue in brewing, and can cause quality degradation resulting in consumer rejection and product waste. For example, lactic acid bacteria are predominately associated with producing a ropy texture and haze, along with producing diacetyl which gives the beer butter flavor notes. Other microorganisms may not affect flavor or aroma, but can retard fermentation by consuming nutrients needed by fermentation yeast. Quality control in craft breweries today relies on culturing methods to detect specific spoilage organisms. Using media can be beneficial for detecting the most common beer spoilers, such as Lactobacillus and Pediococci. However, these methods are time consuming with long incubation periods. Molecular methods such as community profiling or high throughput sequencing are better used for identifying entire populations of beer. These methods allow for detection, differentiation, and identification of taxa.

Crafting traps with attractant alcoholics an alternative for monitoring and control of borer coffee, Hypothenemus hampei (Ferrari 1867

Directory of Open Access Journals (Sweden)

Agramont Richard

2010-10-01

Full Text Available The necessity to incorporate an alternative, for monitoring and control of the borer coffee, Hypothenemus hampei (Ferrari (Choleoptera: Curculionidae to be feasible for the use of the coffee producers, in the community Choro, Coripata municipality, second section of Nor Yungas province, La Paz Bolivia. It was evaluated the capture of adult borer coffee individuals using 45 traps into 1,5 hectares distributed at random with four repetitions. It was used three types of craft traps, built with disposable plastic bottles of soft drinks, with the traps Casera, Brocap and Yessica, were evaluated three treatments: mixture of alcohols methyl (M and ethylic (E in proportions 3:1; mix 1:1 of (M and (E; mix 1:1:1 of (M (E and coffee fresh cherry liquated (CFCL and water as a witness. The largest captures of adult individuals, were present in the crafting traps with mixture of (M(E 3:1 with overalls (± standard deviation adults/traps/ten days of 3414,5±3227,7 being superior to the other treatments. The crafting trap is one of the alternatives for the control and monitoring of the borer in the coffee plantations. The use of crafting traps with alcoholic attractants for the capture of adult individuals, is present as a low cost alternative, being feasible the successful use by the producers into the management integrated programs.

Job crafting and extra-role behavior : the role of work engagement and flourishing

NARCIS (Netherlands)

Demerouti, E.; Bakker, A.B.; Gevers, J.M.P.

2015-01-01

This study investigates whether crafting of job demands and resources relates positively to extra-role behavior (i.e. contextual performance and creativity) through work engagement and flourishing. We collected data from 294 employees and their supervisors regarding employees' contextual performance

Experimental studies of the rotor flow downwash on the Stability of multi-rotor crafts in descent

Science.gov (United States)

Veismann, Marcel; Dougherty, Christopher; Gharib, Morteza

2017-11-01

All rotorcrafts, including helicopters and multicopters, have the inherent problem of entering rotor downwash during vertical descent. As a result, the craft is subject to highly unsteady flow, called vortex ring state (VRS), which leads to a loss of lift and reduced stability. To date, experimental efforts to investigate this phenomenon have been largely limited to analysis of a single, fixed rotor mounted in a horizontal wind tunnel. Our current work aims to understand the interaction of multiple rotors in vertical descent by mounting a multi-rotor craft in a low speed, vertical wind tunnel. Experiments were performed with a fixed and rotationally free mounting; the latter allowing us to better capture the dynamics of a free flying drone. The effect of rotor separation on stability, generated thrust, and rotor wake interaction was characterized using force gauge data and PIV analysis for various descent velocities. The results obtained help us better understand fluid-craft interactions of drones in vertical descent and identify possible sources of instability. The presented material is based upon work supported by the Center for Autonomous Systems and Technologies (CAST) at the Graduate Aerospace Laboratories of the California Institute of Technology (GALCIT).

PipeCraft: Flexible open-source toolkit for bioinformatics analysis of custom high-throughput amplicon sequencing data.

Science.gov (United States)

Anslan, Sten; Bahram, Mohammad; Hiiesalu, Indrek; Tedersoo, Leho

2017-11-01

High-throughput sequencing methods have become a routine analysis tool in environmental sciences as well as in public and private sector. These methods provide vast amount of data, which need to be analysed in several steps. Although the bioinformatics may be applied using several public tools, many analytical pipelines allow too few options for the optimal analysis for more complicated or customized designs. Here, we introduce PipeCraft, a flexible and handy bioinformatics pipeline with a user-friendly graphical interface that links several public tools for analysing amplicon sequencing data. Users are able to customize the pipeline by selecting the most suitable tools and options to process raw sequences from Illumina, Pacific Biosciences, Ion Torrent and Roche 454 sequencing platforms. We described the design and options of PipeCraft and evaluated its performance by analysing the data sets from three different sequencing platforms. We demonstrated that PipeCraft is able to process large data sets within 24 hr. The graphical user interface and the automated links between various bioinformatics tools enable easy customization of the workflow. All analytical steps and options are recorded in log files and are easily traceable. © 2017 John Wiley & Sons Ltd.

Mesoporous ZSM-5 Zeolites in Acid Catalysis: Top-Down vs. Bottom-Up Approach

Directory of Open Access Journals (Sweden)

Pit Losch

2017-07-01

Full Text Available A top-down desilication of Al-rich ZSM-5 zeolites and a bottom-up mesopores creating method were evaluated in this study. Three liquid–solid and one gas–solid heterogeneously-catalysed reactions were chosen to establish relationships between zeolites textural properties and their catalytic behavior in acid-catalysed model reactions that are influenced by shape selectivity: Diels-Alder cyclization between isoprene and methylacrylate, Methanol-to-Olefins (MTO reaction, chlorination of iodobenzene with trichloroisocyanuric acid (TCCA, and Friedel-Crafts acylation of anisole by carboxylic acids with differing sizes. It is found amongst others that no optimal mesoporosity for all the different reactions can be easily obtained, but depending on the chosen application, a specific treatment has to be set to achieve high activity/selectivity and stability.

Nicholas reactions in the construction of cyclohepta[de]naphthalenes and cyclohepta[de]naphthalenones. The total synthesis of microstegiol.

Science.gov (United States)

Taj, Rafiq A; Green, James R

2010-12-03

The application of the Nicholas reaction chemistry of 2,7-dioxygenated naphthalenes in the synthesis of cyclohepta[de]napthalenes and in the synthesis of (±)-microstegiol (1) is presented. The substitution profile of Nicholas monosubstitution (predominantly C-1) and disubstitution reactions (predominantly 1,6-) on 2,7-dioxygenated napthalenes is reported. Application of a 1,8-dicondensation product and selected C-1 monocondensation products to the construction of cyclohepta[de]naphthalenes by way of ring closing metathesis and intramolecular Friedel-Crafts reactions, respectively, is described. Deprotection of the C-7 oxygen function to the corresponding naphthol allows tautomerization to cyclohepta[de]naphthalene-1-ones upon seven-membered-ring closure in most cases, and replacement of the C-2 oxygen function in the naphthalene by a methyl group ultimately allows the synthesis of (±)-microstegiol.

Efficient One-Pot Synthesis of Indol-3-yl-Glycines via Uncatalyzed Friedel-Crafts Reaction in Water

Directory of Open Access Journals (Sweden)

Mehdi Ghandi

2009-03-01

Full Text Available The three component reaction of primary aliphatic amines, glyoxalic acid and indole or N-methylindole in water at ambient temperature affords indol-3-yl or N-methylindol-3-yl-glycine in almost quantitative yields.

Efficient one-pot synthesis of indol-3-yl-glycines via uncatalyzed Friedel-Crafts reaction in water.

Science.gov (United States)

Ghandi, Mehdi; Taheri, Abuzar

2009-03-05

The three component reaction of primary aliphatic amines, glyoxalic acid and indole or N-methylindole in water at ambient temperature affords indol-3-yl or N-methylindol-3-yl-glycine in almost quantitative yields.

Upward Trend in Catalytic Efficiency of Rare-Earth Triflate Catalysts in Friedel-Crafts Aromatic Sulfonylation Reactions

DEFF Research Database (Denmark)

Duus, Fritz; Le, Thach Ngoc; Nguyen, Vo Thu An

2014-01-01

A series of 14 lanthanide (Ln) triflates were investigated as sustainable catalysts for aromatic sulfonylation reactions under microwave irradiation. The catalytic efficiency of the early triflates La(OTf)3–Eu(OTf)3 is good for long irradiation times. For the later lanthanides, yields reaching over...... 90 % were achieved for short irradiation periods. This was the case especially for Tm(OTf)3, Yb(OTf)3, and Lu(OTf)3, of which Yb(OTf)3 was the most efficient. The upward trend in catalytic efficiency therefore correlates with the lanthanide sequence in the periodic table. The results can be explained...

Automatic Observer Script for StarCraft: Brood War Bot Games (technical report)

OpenAIRE

Mattsson, Björn Persson; Vajda, Tomáš; Čertický, Michal

2015-01-01

This short report describes an automated BWAPI-based script developed for live streams of a StarCraft Brood War bot tournament, SSCAIT. The script controls the in-game camera in order to follow the relevant events and improve the viewer experience. We enumerate its novel features and provide a few implementation notes.

Carlo Ginzburg and the Historian’s Craft: Questions and Remarks

Directory of Open Access Journals (Sweden)

Giovanni Tarantino

2014-03-01

Full Text Available Selected paper from the first edition of IinteR-La+b (the International Interdisciplinary Research Laboratory of the Accademia Nazionale dei Lincei, the Swiss Academies of Arts and Sciences and the Balzan Foundation held in Rome, at the Accademia Nazionale dei Lincei, 12–13 November 2012. Published in Giovanni Tarantino (ed., “Our words, and theirs:” A conversation with Carlo Ginzburg on the historian’s craft, Cromohs 18 (2013.

Use of a hypercrosslinked triphenylamine polymer as an efficient adsorbent for the enrichment of phenylurea herbicides.

Science.gov (United States)

Liang, Xinyu; Wang, Juntao; Wu, Qiuhua; Wang, Chun; Wang, Zhi

2018-02-23

A hypercrosslinked triphenylamine polymer (HCTPA) was prepared through a simple one-step Friedel-Crafts alkylation reaction. The HCTPA had an extended π-conjugated system, large specific surface area and high micropore volume. In order to evaluate its extraction performance, the HCTPA was used as the adsorbent for the solid-phase extraction of the phenylurea herbicides (monuron, chlortoluron, isoproturon, monolinuron and buturon) from watermelon, tomato and cucumber samples. The main parameters that could affect the extraction efficiency including the sample volume, sample solution pH, sample solution loading rate and desorption conditions were investigated and optimized. Under the optimized conditions, the HCTPA showed a good extraction performance for the target analytes. The linear range for the quantification of the analytes was in the range of 0.4-160.0 ng g -1 with the correlation coefficients of 0.9996-0.9999. The limits of detection (S/N = 3) of the analytes by the method ranged from 0.06 to 0.12 ng g -1 for watermelon and tomato, and 0.06-0.15 ng g -1 for cucumber samples. The recoveries of the analytes for the method were between 83.1% and 112.5% with the relative standard deviations below 5.5%. These results indicate that the HCTPA can be used for the enrichment of phenylurea herbicides from complex matrix samples like watermelon, tomato and cucumbers. Copyright © 2018 Elsevier B.V. All rights reserved.

Modeling, simulation & optimization of the landing craft air cushion fleet readiness.

Energy Technology Data Exchange (ETDEWEB)

Engi, Dennis

2006-10-01

The Landing Craft Air Cushion is a high-speed, over-the-beach, fully amphibious landing craft capable of carrying a 60-75 ton payload. The LCAC fleet can serve to transport weapons systems, equipment, cargo and personnel from ship to shore and across the beach. This transport system is an integral part of our military arsenal and, as such, its readiness is an important consideration for our national security. Further, the best way to expend financial resources that have been allocated to maintain this fleet is a critical Issue. There is a clear coupling between the measure of Fleet Readiness as defined by the customer for this project and the information that is provided by Sandia's ProOpta methodology. Further, there is a richness in the data that provides even more value to the analyst. This report provides an analytic framework for understanding the connection between Fleet Readiness and the output provided by Sandia's ProOpta software. Further, this report highlights valuable information that can also be made available using the ProOpta output and concepts from basic probability theory. Finally, enabling assumptions along with areas that warrant consideration for further study are identified.

The Aura of the Analogue in a Digital Age: Women’s Crafts, Creative Markets and Home-Based Labour After Etsy

Directory of Open Access Journals (Sweden)

Susan Luckman

2013-02-01

Full Text Available This article examines the renewed popularity of the handmade by examining the current renaissance in the street credibility of previously disparaged women's craft practices, particularly those employing yarn (for example knitting, crochet, needlepoint and weaving and fabric (sewing, felting. The author historically locates current debates around craft production and creative work by drawing upon the British Arts and Crafts movement, with its own longstanding association with women's' labour in the home and desire to realise sustainable ethical labour practices. Notably, both the periods under discussion mark profound shifts in the economic organisation of society – then, the Industrial Revolution; now the de-industrialisation of much of the 'industrialised' world and the rise of the (digitised knowledge economy – and see a concurrent increase in the popularity of the handmade original as a desirable aesthetic object.

Proactive personality and job performance: the role of job crafting and work engagement

NARCIS (Netherlands)

Bakker, A.B.; Tims, M.; Derks, D.

2012-01-01

The article examines the role of proactive personality in predicting work engagement and job performance. On the basis of the literature on proactive personality and the job demands-resources model, we hypothesized that employees with a proactive personality would be most likely to craft their own

A Resource Guide on Indian Arts and Crafts for Elementary and Secondary Teachers.

Science.gov (United States)

Fagot, Madeleine

American Indian arts and crafts reference materials (published 1923-1973) are listed in this annotated resource guide for elementary and secondary school teachers. Approximately 260 listings are given for: books, films and filmstrips, maps and charts, picture sets, magazines, bibliographies and indexes, slide kits, transparencies, distributor's…

Developing Community Reinforcement and Family Training (CRAFT) for Parents of Treatment-Resistant Adolescents

Science.gov (United States)

Kirby, Kimberly C.; Versek, Brian; Kerwin, MaryLouise E.; Meyers, Kathleen; Benishek, Lois A.; Bresani, Elena; Washio, Yukiko; Arria, Amelia; Meyers, Robert J.

2015-01-01

We describe a project focused on training parents to facilitate their treatment-resistant adolescent's treatment entry and to manage their child after entry into community-based treatment. Controlled studies show that Community Reinforcement and Family Training (CRAFT) is a unilateral treatment that fosters treatment entry of adults; however,…

Microstructural and optical properties of spinel oxide M{sub x}Co{sub 2−x}MnO{sub 4} (M = Ni, Zn or Cu; 0 < x < 1) thin films prepared by inorganic polycondensation and dip-coating methods

Energy Technology Data Exchange (ETDEWEB)

Le, Thi Ly; Guillemet-Fritsch, Sophie; Dufour, Pascal; Tenailleau, Christophe, E-mail: tenailleau@chimie.ups-tlse.fr

2016-08-01

Spinel oxide nanoparticles of M{sub x}Co{sub 2−x}MnO{sub 4} (M = Ni, Zn, Cu; 0 < x < 1) were prepared at 120 °C by the inorganic polycondensation method. Phase composition and microstructure of each sample powder thus obtained were characterized by X-ray diffraction, X-ray fluorescence and scanning electron microscopy. Nanoparticles are well crystallized and uniformly distributed in both shape and size. Colloidal dispersions were stabilized in a low cost and environmentally friendly solvent solution. Spinel oxide thin films were then deposited on glass substrates by using the dip-coating technique. Their optical properties were measured in the 300–1100 nm wavelength range. Thin films show extremely good absorbance in the ultra-violet and blue regions. The highest absorbance observed in the red region was for x = 0.15 in zinc. A smaller direct band gap was determined when a low amount of doping M element was introduced in the cobalt and manganese spinel oxide material. - Highlights: • Pure complex spinel oxide nanoparticles synthesis at low T • Low cost method used to stabilize colloidal dispersions • Preparation of homogenous light absorber thin films by dip-coating • Adjustable optical properties and band gaps with the dopants.

Treatment of fungus mycelium for metal retention

International Nuclear Information System (INIS)

Stamberg, K.; Stamberg, J.; Katzer, J.; Prochazka, H.; Jilek, R.; Nemec, P.; Hulak, P.

1974-01-01

A method is described of reinforcing mycelia, mainly of Penicillium and Aspergillus fungi, to make them suitable for industrial retention of uranium, radium, lead, etc. from solutions. The biomass in the native or in the dry state is mixed with one or more polymerizing or polycondensing components in a weight ratio of 1:0.01-3; the product reinforced by polymerization or by polycondensation is further treated by granulation, crosslinking or pressing. Formaldehyde, formaldehyde and resorcin, formaldehyde and urea, or the polyvinyl acetate emulsion are used as components to be polymerized or polycondesated. (B.S.)

An Enquiry into Primary Student Teachers' Confidence, Feelings and Attitudes towards Teaching Arts and Crafts in Finland and Malta during Initial Teacher Training

Science.gov (United States)

Gatt, Isabelle; Karppinen, Seija

2014-01-01

Arts and crafts are connected with a variety of emotions, and the prospect of teaching these subjects could be a source of other emotions, not necessarily positive. This study explores the feelings and attitudes of student teachers towards arts and crafts prior to any training within their degree course and examines any changes that occur…

3D DIGITAL SIMULATION OF MINNAN TEMPLE ARCHITECTURE CAISSON'S CRAFT TECHNIQUES

OpenAIRE

Y. C. Lin; T. C. Wu; M. F. Hsu

2013-01-01

Caisson is one of the important representations of the Minnan (southern Fujian) temple architecture craft techniques and decorative aesthetics. The special component design and group building method present the architectural thinking and personal characteristics of great carpenters of Minnan temple architecture. In late Qing Dynasty, the appearance and style of caissons of famous temples in Taiwan apparently presented the building techniques of the great carpenters. However, as the y...

Fatigue resistance of welded joints in aluminium high-speed craft : A total stress concept

NARCIS (Netherlands)

Den Besten, J.H.

2015-01-01

Crew transfers, surveillance duties and {security, rescue, interception} operations at sea typically require high-speed craft. Aluminium is quite often selected as hull structure material because of its weight save potential in comparison to steel. The fatigue strength, however, may become a point

Oxidative polycondensation of benzimidazole using NaOCl: Synthesis, characterization, optical, thermal and electrical properties of polybenzimidazoles

Science.gov (United States)

Anand, Siddeswaran; Muthusamy, Athianna; Dineshkumar, Sengottuvelu; Chandrasekaran, J.

2017-11-01

A series of polybenzimidazole polymers, poly-2-(1H-benzo[d] imidazole-2-yl) phenol (PBIP2), poly-3-(1H-benzo[d] imidazole-2-yl) phenol (PBIP3) and poly-4-(1H-benzo[d] imidazole-2-yl) phenol (PBIP4) were synthesized by oxidative polycondensation of benzimidazole monomers 2-(1H-benzo [d] imidazole-2-yl) phenol (BIP2), 3-(1H-benzo [d] imidazole-2-yl) phenol (BIP3) and 4-(1H-benzo [d] imidazole-2-yl) phenol (BIP4). The structure of benzimidazoles monomers and polybenzimidazoles (PBI) were confirmed by various spectroscopic techniques. The quantum theoretical calculations of band gap energy values of monomers were done with DFT and are compared with its optical band gap energy values. Fluorescence spectra of these compounds showed maximum emission in blue region. The electrical conductivity of PBIs was measured by four-point probe technique and showed good electrical response on iodine doping and conductivity increases with increase iodine doping time. The differences in conductivities among the three PBIs are in accordance with the charge density on imidazole nitrogens calculated by Huckel method. The high carbines residue (∼40%) at 500 °C in thermo gravimetric analysis shows that the PBIs are having reasonably good thermal stability. Polymers have recorded high dielectric constant at low applied frequency of 50 Hz at 393 K. The I-V characteristics of polybenzimidazoles p-n diodes showed rectifying nature with a typical forward to reverse current in the range -4 to 4 V. The high n values are caused by non homogeneities and effect of series resistance.

Critical Success Factors in Crafting Strategic Architecture for E-Learning at HP University

Science.gov (United States)

Sharma, Kunal; Pandit, Pallvi; Pandit, Parul

2011-01-01

Purpose: The purpose of this paper is to outline the critical success factors for crafting a strategic architecture for e-learning at HP University. Design/methodology/approach: A descriptive survey type of research design was used. An empirical study was conducted on students enrolled with the International Centre for Distance and Open Learning…

THE ROLE OF FOLK ARTS AND CRAFTS OF DAGESTAN IN CONSOLIDATING AND EXPANDING THE TOURIST-EXCURSION ROUTES

Directory of Open Access Journals (Sweden)

G. G. Gazimagomedov

2017-01-01

Full Text Available Aim. The aim of this study is to create and represent the tourist routes in the places of the traditional folk arts and crafts in the Republic of Dagestan.Research Methodology. In the first stage of the study, according to the register and public materials we identified and studied traditional places of folk arts and crafts; carried out monitoring of existing tourist routes and programs. Developed routes are included in the tourist route map.Findings and discussion. We developed five radial exit routes from the city of Makhachkala, characteristics of which are presented below. Folk arts and crafts of Dagestan are a unique part of the artistic culture and at the same time, it is a branch of industry with a high level of tourist attractiveness. Today, Dagestan is one of the few areas in the modern world where traditional folk art is naturally a part of a contemporary social life having the rights of the dominant cultural unity due to the peculiarities of its historical development. Archaeological studies show that due to the geographical position, in Dagestan, there has been an interaction of significant aspects of cultural phenomena relating to the ancient civilizations of the Mediterranean, Western, Central and Eastern Europe, on the one hand, and the development of cultures of different regions of Asia, on the other hand. Coupled with the traditions of the ancient population of the Caucasus, they formed complex and varied artistic conglomerate.Conclusion. The study revealed the basic centers of traditional arts and crafts of the Republic of Dagestan, hiving a high tourism potential. On this basis, we developed five tourist-excursion routes. These routes are included in the information booklet, which has a marketing and information value. 

Easy synthesis of hierarchical carbon spheres with superior capacitive performance in supercapacitors.

Science.gov (United States)

Huang, Xinhua; Kim, Seok; Heo, Min Seon; Kim, Ji Eun; Suh, Hongsuk; Kim, Il

2013-10-01

An easy template-free approach to the fabrication of pure carbon microspheres has been achieved via direct pyrolysis of as-prepared polyaromatic hydrocarbons including polynaphthalene and polypyrene. The polyaromatics were synthesized from aromatic hydrocarbons (AHCs) using anhydrous zinc chloride as the Friedel-Crafts catalyst and chloromethyl methyl ether as a cross-linker. The experimental results show that the methylene bridges between phenyl rings generate a hierarchical porous polyaromatic precursor to form three-dimensionally (3D) interconnected micro-, meso-, and macroporous networks during carbonization. These hierarchical porous carbon aggregates of spherical carbon spheres exhibit faster ion transport/diffusion behavior and increased surface area usage in electric double-layer capacitors. Furthermore, micropores are present in the 3D interconnected network inside the cross-linked AHC-based carbon microspheres, thus imparting an exceptionally large, electrochemically accessible surface area for charge accumulation.

Synthetic model of a new deoxybenzoin derivative from Deguelia hatschbachii A.M.G. Azevedo

International Nuclear Information System (INIS)

Magalhaes, A.F.; Magalhaes, E.G.; Trazzi, G.; Moraes, V.R. de S.

2005-01-01

In this paper we describe the synthesis of 2',4'-dimethoxy-8-(propyl-2-one)-deoxybenzoin, a new compound employed as a model for the comparison with the respective spectral data for 6',4-dihydroxy-3'-(3,3- dimethylallyl)-2 , 2 - dimethylchromene(5 , 6 : 5',4')-2'-methoxy-8-(propyl-2-one) deoxybenzoin, recently isolated from Deguelia hatschbachii A.M.G. Azevedo. Both compounds have a 'propyl-2-one' group attached to C-8 of the deoxybenzoin skeleton, for which there is no precedent in the literature. The Friedel-Crafts reaction of 1,3-dimethoxybenzene with phenylacetyl chloride furnished 2',4'-dimethoxydeoxybenzoin, that after reaction with allyl bromide gave 2',4'-dimethoxy-8-(allyl)-deoxybenzoin . Wacker oxidation gave the desired model compound in 15% overall yield. The corresponding spectral data reinforced the structure previously determined for the natural product. (author)

Trait-level and week-level regulatory focus as a motivation to craft a job

NARCIS (Netherlands)

Petrou, P.; Demerouti, E.

2015-01-01

Purpose – The purpose of this paper is to address regulatory focus (promotion vs prevention) as a trait-level variable and a week-level variable linked to employee job crafting behaviors (i.e. seeking resources, seeking challenges and reducing demands). The authors hypothesized that while promotion

Degradation of spent craft brewer’s yeast by caprine rumen hyper ammonia-producing bacteria

Science.gov (United States)

Spent brewer’s yeast has long been included in ruminant diets as a protein supplement. However, modern craft beers often include more hops (Humulus lupulus L.) compounds than traditional recipes. These compounds include alpha and beta-acids, which are antimicrobial to the rumen hyper ammonia-produci...

High Job Demands, Still Engaged and Not Burned Out? The Role of Job Crafting

NARCIS (Netherlands)

Hakanen, Jari J.; Seppälä, Piia; Peeters, Maria C W

2017-01-01

Purpose: Traditionally, employee well-being has been considered as resulting from decent working conditions arranged by the organization. Much less is known about whether employees themselves can make self-initiated changes to their work, i.e., craft their jobs, in order to stay well, even in highly

Use of Job Task Analysis (JTA) in the development of craft training programs

International Nuclear Information System (INIS)

Gonyeau, J.A.; Long, R.E.

1985-01-01

Northern States Power Company is making a major effort to develop performance based training. It is finding the use of JTA data very helpful in the revision of its maintenance craft training programs. The technique being used involves a group of interns from the Training and Development Program of the University of Minnesota. These interns are largely graduate students, but with no nuclear and little mechanical/electrical experience. A Job Analysis for each discipline was used to: guide the following task analysis, determine program content, evaluate existing OJT check lists, and to define the four crafts used for mechanical maintenance. From the Job Analysis, a Training Task List was developed and correlated to training materials. The analysis of the tasks on the Training Task List is proceeding. Taxonomies of systems or subjects are compared to existing lesson plans. These taxonomies are useful when writing new lesson plans. The taxonomies are an excellent start for the development of enabling objectives. A Nine-Step Plan is being followed in the application of JTA data to the development and refinement of performance based training

Embryonic expression of shuttle craft, a Drosophila gene involved in neuron development, is associated with adult lifespan.

Science.gov (United States)

Roshina, Natalia V; Symonenko, Alexander V; Krementsova, Anna V; Trostnikov, Mikhail V; Pasyukova, Elena G

2014-12-01

Despite the progress in aging research that highlights the role of the nervous system in longevity, whether genes that control development and consequently structure of the nervous system affect lifespan is unclear. We demonstrated that a mutation inshuttle craft, a gene involved in the nervous system development, increased the lifespan of unmated females and decreased the lifespan of mated females, without affecting males. Precise reversions of the mutation lead to the restoration of the lifespan specific to control females. In mutant unmated females, increased lifespan was associated with elevated locomotion at older ages, indicating slowed aging. In mutant mated females, reproduction was decreased compared to controls, indicating a lack of tradeoff between this trait and lifespan. No differences in shuttle craft transcription were observed between whole bodies, ovaries, and brains of mutant and control females of different ages, either unmated or mated. The amount of shuttle craft transcript appeared to be substantially decreased in mutant embryos. Our results demonstrated that a gene that regulates development of the nervous system might also influence longevity, and thus expanded the spectrum of genes involved in lifespan control. We hypothesize that this "carry-over" effect might be the result of transcription regulation in embryos.

A randomized pilot clinical trial to evaluate the efficacy of Community Reinforcement and Family Training for Treatment Retention (CRAFT-T) for improving outcomes for patients completing opioid detoxification.

Science.gov (United States)

Brigham, Gregory S; Slesnick, Natasha; Winhusen, Theresa M; Lewis, Daniel F; Guo, Xiamei; Somoza, Eugene

2014-05-01

Detoxification with psychosocial counseling remains a standard opioid-use disorder treatment practice but is associated with poor outcomes. This study tested the efficacy of a newly developed psychosocial intervention, Community Reinforcement Approach and Family Training for Treatment Retention (CRAFT-T), relative to psychosocial treatment as usual (TAU), for improving treatment outcomes. A randomized, 14-week trial with follow-up visits at 6 and 9 months post-randomization conducted at two substance use disorder (SUD) treatment programs. Opioid-dependent adults (i.e., identified patient - IP) enrolled in a residential buprenorphine-detoxification program and their identified concerned significant other (CSO) was randomized to CRAFT-T (n=28 dyads) or TAU (n=24 dyads). CRAFT-T consisted of two sessions with the IP and CSO together and 10 with the CSO alone, over 14 weeks. TAU for the CSOs was primarily educational and referral to self-help. All IPs received treatment as usually provided by the SUD program in which they were enrolled. The primary outcome was time to first IP drop from treatment lasting 30 days or more. Opioid and other drug use were key secondary outcomes. CRAFT-T resulted in a moderate but non-significant effect on treatment retention (p=0.058, hazard ratio=0.57). When the CSO was parental family, CRAFT-T had a large and significant effect on treatment retention (pCRAFT-T had a significant positive effect on IP opioid and other drug use (pCRAFT-T is a promising treatment for opioid use disorder but replication is needed to confirm these results. Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.

Traditional Craft or Technology Education: Development of Students' Technical Abilities in Finnish Comprehensive School

Science.gov (United States)

Autio, Ossi

2016-01-01

Changes in the economy, nature, production and society together with increasing scientific and technological knowledge make demands of transforming school teaching in the field of technology education. The aim of the article is briefly to explore the integration between science, technology and traditional craft education by analyzing the current…

Effects of spent craft brewers’ yeast on fermentation and methane production by rumen microorganisms

Science.gov (United States)

Saccharomyces cerevisiae is a key component of beer brewing and a major by-product. The leftover, spent brewers’ yeast, from large breweries has been used for some time as a protein supplement in cattle, however the possible advantages of spent yeast from smaller craft breweries, containing much hig...

Optical and Thermal Behaviors of Polyamide-Layered Silicate Nanocomposites Based on 4,4'-Azodibenzoic Acid by Solution Intercalation Technique

Science.gov (United States)

Faghihi, Khalil; Shabanian, Meisam

2011-04-01

Two new samples of polyamide-montmorillonite reinforced nanocomposites based on 4,4'-azodibenzoic acid were prepared by a convenient solution intercalation technique. Polyamide (PA) 4 as a source of polymer matrix was synthesized by the direct polycondensation reaction of 4,4'-azodibenzoic acid 2 with 4,4'-diamino diphenyl sulfone 3 in the presence of triphenyl phosphate (TPP), CaCl2, pyridine and N-methyl-2-pyrrolidone (NMP). Morphology and structure of the resulting PA-nanocomposite films 4a and 4b with 10 and 20% silicate particles were characterized by FTIR spectroscopy, X-ray diffraction (XRD) and scanning electron microscopy (SEM). The effect of clay dispersion and the interaction between clay and polymeric chains on the properties of nanocomposite films were investigated by using Uv-vis spectroscopy, thermogravimetric analysis (TGA) and water uptake measurements.

Professional Interventions as a State-Crafting Grammar

DEFF Research Database (Denmark)

Ydesen, Christian; Øland, Trine

2015-01-01

of reasoning. The second part titled ‘Theoretical concepts: State, Profession, Immigrant’ aims at presenting and clarifying the triad ‘state – profession – immigrant’ through the conceptual lens of state as a bureaucratic field and state-crafting. The third part designated ‘Working with historical sources......The first part under the headline ‘Theory and the construction of the research object’ will clarify our concept of theory and the Bourdieusian and Wacquantian way of working with theory and theoretical constructions when doing empirical and historical work as basis for the article’s chain......’ consists of three subsections altogether. The first addresses in brief the question of putting the theoretical model into work empirically focussing on the concept of field to avoid determinism and presentism when working with a com-prehensive theoretical framework. The second and third subsections takes...

Method of fungal mycelium treatment for metal retention by agglomeration

International Nuclear Information System (INIS)

Votapek, V.; Marval, E.; Stamberg, K.; Jilek, R.

1980-01-01

The mycelium of microorganisms in the native or the dry state is introduced by stirring into the dispersion medium of nonpolar organic solvents (toluene, xylene, chlorobenzene) forming an azeotropic mixture with water. The biomass agglomerates into granules by gradual addition of the solutions of polymerizable or polycondensable reinforcing components. The resulting granules are solidified by polymerization or polycondensation in the presence of a catalyst, eg., ferric chloride, ammonium chloride, and by heating to a temperature of 105 to 145 degC with simultaneous distillation of water. The reaction mixture is maintained at the said temperature for 0.25 to 4 hours. (J.P.)

Editorial. Yes, Please - Both Crafts and Digital Tools in Basic Education

Directory of Open Access Journals (Sweden)

Liv Merete Nielsen

2014-12-01

Full Text Available The Ludvigsen Committee (Ludvigsen-utvalget, which aims to assess primary and secondary educational subjects in terms of the competence Norwegian society and its working life will need in the future, has published an interim report entitled Pupils’ Learning in the School of the Future – A Knowledge Foundation (Norwegian Ministry of Education and Research, 2014. The committee wrote the following about arts and crafts: “That subject will contribute to personal development and simultaneously strengthen opportunities to participate in a democratic society, which can be seen as a desire to protect both individual-oriented and community-oriented training. The breadth of the subject can restrict the ability to delve into individual topics” (NOU 2014: 7, 2014, p. 89, our translation from Norwegian. This will be an important challenge for the team in the near future. The committee shall submit their principal report by June 2015.Practical work with materials must not be removed from primary school. It should be required that qualified teachers are employed on the lower grades. Practical/hands-on work can give the trades a boost, encourage students to choose vocations and prevent dropouts in vocational education programmes. We need skilled craftsmen in the future, and good teaching in Arts & Crafts in compulsory education could provide an important basis for both future craftsmen and customers of good craftsmen.

Multipurpose stabilization of the advanced marine surface crafts

Directory of Open Access Journals (Sweden)

Sevostyanov Ruslan A.

2016-01-01

Full Text Available Advanced marine surface crafts, such as SWATHs, catamarans or hovercrafts become more and more popular for a great range of various tasks. They usually operate at much higher speed than conventional ships. Moreover, in the open sea there are a lot of requirements and restrictions concerning the quality of such crafts’ dynamics, especially in case of the wind or waves. This paper considers application of the control law with a special multipurpose structure for autopilot design for amphibious air cushion vehicles. Such control law allows to decompose the autopilot task into simpler optimization subtasks. Efficiency of this approach is shown in the task of stabilizing yaw angle of the air cushion vehicle in the different weather conditions.

Calculation of kinetic parameters of amino-formaldehyde polymers formation in the presence of calcium ions

Directory of Open Access Journals (Sweden)

V.V. Arhipova

2016-05-01

Full Text Available Calcium carbonate is on of widely used fillers of composite materials. The area of its application depend on disperse structure, particle shape and other. The modification of calcium carbonate by high-molecular polymers allows changing its characteristics and surface properties in a wide range. The modification of calcium carbonate often carried out with use of amino-formaldehyde polymers (AFP. Aim: The aim of this work is to determine the kinetic characteristics of amino-formaldehyde polymers polycondensation process in the presence of calcium ions. Materials and Methods: The mechanism of AFP polycondensation is complex and depends on various factors. Polycondensation of AFP took place under following conditions: the temperature is 20, 30, 60°C; the molar ratio of carbamide to formaldehyde is 1:1.25; the polycondensation duration is 2 hours; the mass ratio of CaCO3:AFP = 1:1. The polycondensation process was carried out in calcium chloride solution with рН=2…5.5. The concentration of formaldehyde and metilol groups determined during the experiment using chemical titrimetric method. Results: It is shown that polycondensation process of AFP in the presence of Сa2+ ions at their concentration from 0 to 2,25 mol/l (0…90 g/l leads to acceleration of process more than by 1.8 times at temperature of 20°C. Further increase of Сa2+ concentration leads to reduction of process speed. At temperature of 30°C the speed of process almost does not change in the range of Сa2+ concentration from 0 to 2,25 mol/l and further decreases slightly. For all range of Сa2+ concentration at temperature of 60°C the reduction of process speed is observed. Influence of Сa2+ on process of polycondensation confirms assumption made earlier of formation of weak bonds between AFP and calcium ions which at low temperatures interfere with hydrolysis of methyleneurea and collapse at increasing of process temperature.

The Teachers' Views on the Significance of the Design and Craft Teaching in Finland

Science.gov (United States)

Ronkko, Marja-Leena; Mommo, Sanna; Aerila, Juli-Anna

2016-01-01

The Finnish curriculum for crafts emphasises the creative problem-solving skills of the student, the completion of different design tasks and the implementation of designs, while seeking to nurture the student's self-esteem. Furthermore, students should draw up the designs for their artefacts, plan their work, and also develop designs when needed.…

Enhanced adsorption of phenol from water by a novel polar post-crosslinked polymeric adsorbent

International Nuclear Information System (INIS)

Zeng Xiaowei; Fan Yunge; Wu Guolin; Wang Chunhong; Shi Rongfu

2009-01-01

A novel post-crosslinked polymeric adsorbent PDM-2 was prepared by Friedel-Crafts reaction of pendant vinyl groups without external crosslinking agent. Both the specific surface area and the pore volume of starting copolymer PDM-1 increased significantly after post-crosslinking. Batch adsorption runs of phenol from aqueous solution onto PDM-1 and PDM-2 were investigated. Commercial macroporous resins XAD-4 and AB-8 were chosen as the comparison. Experimental results showed that isotherms of phenol adsorption onto these four polymeric adsorbents could be represented by Freundlich model reasonably. PDM-2 exhibited higher adsorption capacity of phenol than other three adsorbents, which resulted from synergistic effect of larger specific surface area and polar groups on the network. The adsorption process for phenol was proved to be exothermic and spontaneous in nature. Thermodynamic parameters such as Gibb's free energy (ΔG), change in enthalpy (ΔH) and change in entropy (ΔS) were calculated. Kinetics studies indicated that phenol uptake onto PDM-1 and PDM-2 followed the pseudo-second order model and the intraparticle diffusion process was a rate-controlling step. Column adsorption runs demonstrated that nearly 100% regeneration efficiency for PDM-2 by 3 BV industrial alcohol and the adsorbate phenol can be easily recovered by further distilling. Continuous column adsorption-regeneration cycles indicated negligible capacity loss of PDM-2 during operation.

O activismo estético feminista de Nikki Craft Nikki Craft's aesthetic feminist activism

Directory of Open Access Journals (Sweden)

Rui Pedro Fonseca

2010-12-01

Full Text Available Uma das condições para que na sociedade sejam alicerçados valores de género misóginos consiste na existência de uma estrutura de produção cultural heterossexual compulsiva, dominante e universalista que estabeleça princípios de representação dos sexos claramente diferenciados, que tendam a favorecer mais o homem em detrimento da mulher. Partimos de um princípio de que a produção da cultura origina processos de reprodução, o que significa, em termos práticos, que a representação de signos, códigos, valores e comportamentos associados aos sexos é potencialmente materializada nas sociedades, por homens e por mulheres. Essa tem sido uma batalha levada a cabo por muitas mulheres a partir da segunda vaga do movimento feminista, nomeadamente pela ala mais radical, que tem procurado reivindicar novos paradigmas no que diz respeito às convenções culturais de género. O que propomos neste estudo é analisar algumas das campanhas levadas a cabo por Nikki Craft, uma feminista radical norte-americana que viria a organizar e/ou a protagonizar nos anos 1970 e 1980 vários protestos em espaços públicos de algumas cidades dos Estados Unidos. Neste estudo procuramos clarificar as motivações e as estratégias levadas a cabo por essa feminista, cujos activismos incidiram contra algumas das estruturas culturais (campo da arte, instituições da beleza e indústria pornográfica legitimadoras de representações desencadeadoras de prejuízos para a mulherOne of the conditions for misogynic genders to be settled in society consists on the existence of a compulsive dominant and universal heterosexual cultural production, which establishes clearly differentiated representation principles of both sexes. These representation principles tend to favour more the man, disregarding the woman. We consider that culture production gives origin to reproduction processes, which means that, in practical terms, the representation of signs, codes, values

Pupils' Activities in a Multimaterial Learning Environment in Craft subject A Pilot Study using an Experience Sampling Method based on a Mobile Application in Classroom Settings

Directory of Open Access Journals (Sweden)

Juha Jaatinen

2017-12-01

Full Text Available This study investigates holistic craft processes in craft education with an instrument for data-collection and self-assessment. Teaching in a study context is based on co-teaching and a design process, highlighted by the Finnish Basic Education Core Curriculum 2014. The school architecture and web-based learning environment is combined. Division for textiles and technical work is no longer supported in this multimaterial learning environment. The aim of the study is to 1 make pupils’ holistic craft processes visible in everyday classroom practices with information collected by a mobile-application and 2 point out the curriculum topics that are covered during everyday classroom practices as defined by the teachers. The data is collected using an Experience Sampling Method with a gamified learning analytics instrument. Teachers’ classroom activities were used as the backbone for the thematic mapping of the craft curriculum. Preliminary measurements were carried out in a Finnish primary school in grades 5–6 (age 10–12, n = 125 during a four-week period in October-November 2016. The list of classroom activities was updated after the four weeks’ experiment and was tested in March-May 2017 with all the pupils of the pilot school (N = 353. The key findings were that a for pupils the self-assessment was easy as a technical process but there were several factors in the everyday classroom settings that made the process challenging and b it was relatively difficult for teachers to describe the classroom activities in terms of the new curriculum; however, after four weeks they could not only described the activities in more details but had also developed new activities that supported the ideas of the new curriculum better.Keywords: multi-material craft, learning environment, holistic craft process, experience sampling method

Scholarisation, Apprenticeship and Social Differentiation. Analysis of the Non-Industrial Craft Sector in Morocco

Science.gov (United States)

Gerard, Etienne

2012-01-01

The article approaches the question of the schooling processes in the particular environment of the Moroccan craftsmen of Fez. It shows that the weak schooling of the children is bound to the representations and to the ways of transmission of craft industry knowledge. Schooling is, indeed, the object of tensions between a school system of western…

Design- and Craft thinking analysed as Embodied Cognition

Directory of Open Access Journals (Sweden)

Camilla Groth

2016-06-01

Full Text Available Through the concept of design thinking the act of designing is presented as an intellectual activity, and the act of planning the design is elevated over the making process. However, the importance of materiality and the embodied sense-making that occurs in this context should not be forgotten. In this study, embodied cognition in design and craft practices was investigated through three case studies. The study takes on an enhanced tactile perspective as a methodological platform; thus, the cases involve 1 deafblind makers in ceramics, 2 a practice-led self-study report on tactile experiences while working with clay and 3 a study on design students’ use of their tactile sense during material exploration. The results show that the act of thinking design involves the body as a knowledge provider.

Investigation of crafting polymerization of acrylic acid to cellulose materials under the action of accelerated electrons

International Nuclear Information System (INIS)

Valiev, A.; Bazhenov, L.G.; Asamov, M.K.; Sagatov, Eh.A.

1996-01-01

Crafting polymerization of acrylic acid (AA) to cellulose materials in the presence of copper, zinc and silver salts under the action of accelerated electrons has been investigated with the aim to attach anti microbe properties to these materials. (author). 2 refs., 1 tab

Derivation of uranium residual radioactive material guidelines for the former Alba Craft Laboratory site, Oxford, Ohio

International Nuclear Information System (INIS)

Nimmagadda, M.; Faillace, E.; Yu, C.

1994-01-01

Residual radioactive material guidelines for uranium were derived for the former Alba Craft Laboratory site in Oxford, Ohio. This site has been identified for remedial action under the Formerly Utilized Sites Remedial Action Program (FUSRAP) of the US Department of Energy (DOE). Single nuclide and total uranium guidelines were derived on the basis of the requirement that the 50-year committed effective dose equivalent to a hypothetical individual who lives or works in the immediate vicinity of the former Alba Craft Laboratory site should not exceed a dose of 30 mrem/yr following remedial action for the current use and likely future use scenarios or a dose of 100 mrem/yr for less likely future use scenarios (Yu et al. 1993). The DOE residual radioactive material guideline computer code, RESRAD, which implements the methodology described in the DOE manual for implementing residual radioactive material guidelines, was used in this evaluation

Polystyrene-supported cu(II)-R-Box as recyclable catalyst in asymmetric Friedel–Crafts reaction

KAUST Repository

Desyatkin, V. G.

2017-02-12

The complex of copper(II) trifluoromethanesulfonate with chiral isopropyl bis(oxazoline) ligand (i-Pr-Box) was immobilized on accessible and inexpensive Merrifield resin according to a “click” procedure. The resulting catalyst showed high efficiency and recyclability in the asymmetric Friedel–Crafts alkylation of indole and its derivatives. The catalyst can be recycled five times without appreciable loss in activity and enantioselectivity.

Polystyrene-supported cu(II)-R-Box as recyclable catalyst in asymmetric Friedel–Crafts reaction

KAUST Repository

Desyatkin, V. G.; Anokhin, M. V.; Rodionov, Valentin; Beletskaya, I. P.

2017-01-01

The complex of copper(II) trifluoromethanesulfonate with chiral isopropyl bis(oxazoline) ligand (i-Pr-Box) was immobilized on accessible and inexpensive Merrifield resin according to a “click” procedure. The resulting catalyst showed high efficiency and recyclability in the asymmetric Friedel–Crafts alkylation of indole and its derivatives. The catalyst can be recycled five times without appreciable loss in activity and enantioselectivity.

Teaching Quantum Mechanics with qCraft: Outreach and Video Games

Science.gov (United States)

Kubica, Aleksander; Chatwin-Davies, Aidan; Michalakis, Spyridon

Why is quantum mechanics considered a hard and inaccessible subject? Part of the difficulty is due to the nature of the subject itself. However, no small part of the difficulty is its pedagogy, which often relies on out-of-date historical motivation and experimental evidence that is disconnected from day-to-day experiences. In this first talk, we explore ways in which video games are well-suited to teaching quantum mechanics, in particular with regards to building intuition, as well as some of their limitations. We then illustrate these considerations through qCraft, an extension for Minecraft that incorporates aspects of quantum mechanics into the game.

Developing Craft Skills with Quasi-Cases: The Example of the Big Apple's Flirtation with Congestion Pricing

Science.gov (United States)

Straussman, Jeffrey D.

2015-01-01

This article adopts the perspective expounded by Weimer, and Vining and Weimer, that policy analysis requires "craft skills" and, therefore, one of the fundamental objectives of public affairs programs is to prepare graduates for the professional working world by providing opportunities to learn and practice these skills. Second, the…

Can job crafting reduce job boredom and increase work engagement? A three-year cross-lagged panel study

NARCIS (Netherlands)

Harju, Lotta K.; Hakanen, Jari J.; Schaufeli, Wilmar B.|info:eu-repo/dai/nl/073779563

2016-01-01

Building upon the Conservation of Resources (COR) theory, this longitudinal study examined whether job crafting behaviors (i.e. increasing structural and social job resources and increasing challenges) predict less job boredom and more work engagement. We also tested the reverse causation effects of

Meniscus-assisted solution printing of large-grained perovskite films for high-efficiency solar cells

Science.gov (United States)

He, Ming; Li, Bo; Cui, Xun; Jiang, Beibei; He, Yanjie; Chen, Yihuang; O'Neil, Daniel; Szymanski, Paul; Ei-Sayed, Mostafa A.; Huang, Jinsong; Lin, Zhiqun

2017-07-01

Control over morphology and crystallinity of metal halide perovskite films is of key importance to enable high-performance optoelectronics. However, this remains particularly challenging for solution-printed devices due to the complex crystallization kinetics of semiconductor materials within dynamic flow of inks. Here we report a simple yet effective meniscus-assisted solution printing (MASP) strategy to yield large-grained dense perovskite film with good crystallization and preferred orientation. Intriguingly, the outward convective flow triggered by fast solvent evaporation at the edge of the meniscus ink imparts the transport of perovskite solutes, thus facilitating the growth of micrometre-scale perovskite grains. The growth kinetics of perovskite crystals is scrutinized by in situ optical microscopy tracking to understand the crystallization mechanism. The perovskite films produced by MASP exhibit excellent optoelectronic properties with efficiencies approaching 20% in planar perovskite solar cells. This robust MASP strategy may in principle be easily extended to craft other solution-printed perovskite-based optoelectronics.

The Functions and Benefits of the ePortfolio in Craft Education at the Primary Level

Science.gov (United States)

Saarinen, Auli; Seitamaa-Hakkarainen, Pirita; Hakkarainen, Kai

2016-01-01

The authors investigated primary school pupils' experiences using an electronic portfolio in their craft education for a three year period, from the 3rd grade until the end of the 5th grade. This article emphasizes the functions and the benefits of the ePortfolio method and outlines general user experiences based on pupil interviews (N = 38),…

Anatomical models and wax Venuses: art masterpieces or scientific craft works?

Science.gov (United States)

Ballestriero, R

2010-02-01

The art of wax modelling has an ancient origin but rose to prominence in 14th century Italy with the cult of votive artefacts. With the advent of Neoclassicism this art, now deemed repulsive, continued to survive in a scientific environment, where it flourished in the study of normal and pathological anatomy, obstetrics, zoology and botany. The achievement of having originated the creation of anatomical models in coloured wax must be ascribed to a joint effort undertaken by the Sicilian wax modeller Gaetano Giulio Zumbo and the French surgeon Guillaume Desnoues in the late 17th century. Interest in anatomical wax models spread throughout Europe during the 18th century, first in Bologna with Ercole Lelli, Giovanni Manzolini and Anna Morandi, and then in Florence with Felice Fontana and Clemente Susini. In England, the art of anatomical ceroplastics was brought to London from Florence by the sculptor Joseph Towne. Throughout the centuries many anatomical artists preferred this material due to the remarkable mimetic likeness obtained, far surpassing any other material. Independent of the material used, whether wood, wax or clay, anatomical models were always considered merely craft works confined to hospitals or faculties of medicine and have survived to this day only because of their scientific interest. Italian and English waxes are stylistically different but the remarkable results obtained by Susini and Towne, and the fact that some contemporary artists are again representing anatomical wax bodies in their works, makes the border that formerly separated art and craft indistinguishable.

Wetland craft plants in KwaZulu-Natal: an ecological review of har­vesting impacts and implications for sustainable utilization

Directory of Open Access Journals (Sweden)

C. H. Traynor

2010-07-01

Full Text Available In South Africa, wetland plants have been used for centuries and they continue to be harvested for subsistence and commercial purposes. Fibres for crafts are collected by cutting the aboveground parts. KwaZulu-Natal is one of the major basket-producing regions in southern Africa and at least twenty-two species of wetland plants are harvested for crafts. A literature review of the harvested species revealed that the impacts of cutting have only been extensively investigated for Phragmites australis (Cav. Steud. and Juncus kraussii Hochst. The review suggested that, where plants display strong seasonal aboveground productivity patterns, cutting should take place after shoot senescence and before new shoot emergence to minimize damage to plants. Cutting in the short term could increase the density of green stems. However, in the long term in  Phragmites australis, it may deplete the rhizome reserves and reduce the density of useable (longer and thicker culms.The opportunity for sustainable harvests was investigated by considering the geographic distribution, whether species are habitat specific or not, and local population sizes of the craft plants. Juncus kraussii is of the greatest conservation concern.Ecologically sustainable wetland plant harv esting could contribute to the wise use of wetlands, an approach promoted nationally and internationally.

The Occurrence of Beer Spoilage Lactic Acid Bacteria in Craft Beer Production.

Science.gov (United States)

Garofalo, Cristiana; Osimani, Andrea; Milanović, Vesna; Taccari, Manuela; Aquilanti, Lucia; Clementi, Francesca

2015-12-01

Beer is one of the world's most ancient and widely consumed fermented alcoholic beverages produced with water, malted cereal grains (generally barley and wheat), hops, and yeast. Beer is considered an unfavorable substrate of growth for many microorganisms, however, there are a limited number of bacteria and yeasts, which are capable of growth and may spoil beer especially if it is not pasteurized or sterile-filtered as craft beer. The aim of this research study was to track beer spoilage lactic acid bacteria (LAB) inside a brewery and during the craft beer production process. To that end, indoor air and work surface samples, collected in the brewery under study, together with commercial active dry yeasts, exhausted yeasts, yeast pellet (obtained after mature beer centrifugation), and spoiled beers were analyzed through culture-dependent methods and PCR-DGGE in order to identify the contaminant LAB species and the source of contamination. Lactobacillus brevis was detected in a spoiled beer and in a commercial active dry yeast. Other LAB species and bacteria ascribed to Staphylococcus sp., Enterobaceriaceae, and Acetobacter sp. were found in the brewery. In conclusion, the PCR-DGGE technique coupled with the culture-dependent method was found to be a useful tool for identifying the beer spoilage bacteria and the source of contamination. The analyses carried out on raw materials, by-products, final products, and the brewery were useful for implementing a sanitization plan to be adopted in the production plant. © 2015 Institute of Food Technologists®

Materials on Creative Arts (Arts, Crafts, Dance, Drama, Music, Bibliotherapy) for Persons with Handicapping Conditions. Revised.

Science.gov (United States)

American Alliance for Health, Physical Education, and Recreation, Washington, DC. Information and Research Utilization Center.

Intended as a resource guide for persons who include such subjects as arts, crafts, dance, and music in programs for the handicapped, resources are listed for printed materials, audiovisual materials, resource persons and organizations, and material and equipment suppliers. Brief literature reviews sum up the state of the art in the specific art…

Cosmogonic Perceptions in the Armenian Traditional Musical Instrument-crafting Culture

Science.gov (United States)

Pikichian, Hripsime

2015-07-01

Based on research data and materials recorded by folk musicians and craftsmen, the article presents the musical instrument-crafting in traditional culture, its contribution in to re-establishment of cosmic order. In this context, the several issues are reviewed in detail: individuality of craftsmen and musicians, the raw materials for the creation of instrument, the instrument structure, the manufacturing process, the ornaments and application. According to the traditional view, using the elements of nature and imitating the sounds of nature and human psychological states the master imitates God repeating the process of creation of the Universe. So, the Instrument is held capable to influence the society contributing to the eternity of life.

77 FR 31642 - Hawker Beech Craft Defense Company, LLC, Also Known As Hawker Beechcraft Corporation, Also Known...

Science.gov (United States)

2012-05-29

... DEPARTMENT OF LABOR Employment and Training Administration [TA-W-74,901] Hawker Beech Craft Defense Company, LLC, Also Known As Hawker Beechcraft Corporation, Also Known As Hawker Beechcraft International SVC, Also Known As Rapid Surplus Parts, Also Known As Hawker Beechcraft Svcs, Also Known As Travel...

Direct transformation of silyl enol ethers into functionalized allenes.

Science.gov (United States)

Langer, P; Döring, M; Seyferth, D; Görls, H

2001-02-02

The first elimination reactions of silyl enol ethers to lithiated allenes are reported. These reactions allow a direct transformation of readily available silyl enol ethers into functionalized allenes. The action of three to four equivalents of lithium diisopropylamide (LDA) on silyl enol ethers results in the formation of lithiated allenes by initial allylic lithiation, subsequent elimination of a lithium silanolate, and finally, lithiation of the allene thus formed. Starting with amide-derived silyl imino ethers, lithiated ketenimines are obtained. A variety of reactions of the lithiated allenes with electrophiles (chlorosilanes, trimethylchlorostannane, dimethyl sulfate and ethanol) were carried out. Elimination of silanolate is observed only for substrates that contain the hindered SiMe2tBu or Si(iPr)3 moiety, but not for the SiMe3 group. The reaction of 1,1-dilithio-3,3-diphenylallene with ketones provides a convenient access to novel 1,1-di(hydroxymethyl)allenes which undergo a domino Nazarov-Friedel-Crafts reaction upon treatment with p-toluenesulfonic acid.

Menadione.

Science.gov (United States)

Hassan, Ghada S

2013-01-01

This chapter includes the aspects of Menadione (vitamin K). The drug is synthesized by the use of itaconic acid obtained through Friedel-Craft condensation or by direct oxidation of the 2-methyl-1,4-naphthquinone. Vitamin K generally maintains healthy blood clotting and prevents excessive bleeding and hemorrhage, it is also important for maintaining healthy bone structure and for carbohydrate storage in the body. In addition, it is given to newborn babies born in hospitals to prevent the development of life-threatening bleeding caused by low prothrombin levels. The chapter discusses the drug metabolism and pharmacokinetics and presents various method of analysis of this drug such as compendial tests, electrochemical analysis, spectroscopic analysis, and chromatographic techniques of separation. It also discusses its physical properties such as solubility characteristics, X-ray powder diffraction pattern, and thermal methods of analysis. The chapter is concluded with a discussion on its biological properties such as activity, toxicity, and safety. Copyright © 2013 Elsevier Inc. All rights reserved.

Synthesis and thermal behavior of new organometallic poly ketones and co-poly ketones based on diferrocenylidene piperidone

International Nuclear Information System (INIS)

Aly, K.I.

2005-01-01

A new interesting category of organometallic poly ketones and copolyketones were synthesized via Friedel - Crafts reaction through the polymerization of 2,6-[Bis (2-ferrocenyl )methylene] N-methylpiperidone (II) with different diacid chlorides. The model compound was synthesized by reacting the monomer (II) with benzoyl chloride and characterized by HNMR, IR and elemental analyses. The poly ketones and copolyketones were insoluble in most organic solvents but soluble easily in protic solvents. The thermal properties of these poly ketones and copolyketones were evaluated and correlated to their structural units by TGA and DSC measurements, and had inherent viscosity 0.34-0.52 dl g-1. Moreover, the electrical conductivity of one of the poly ketones, as selected example, Va and copolyketone VI were investigated above the temperature range (300-500 K) and showed that it followed an Arrhenius equation with activation energy 2.09 eV, also the morphological properties of selected examples of poly-and copolyketones were detected by SEM

Antisolvent Precipitation for the Synthesis of Monodisperse Mesoporous Niobium Oxide Spheres as Highly Effective Solid Acid Catalysts

KAUST Repository

Li, Cheng Chao; Dou, Jian; Chen, Luwei; Lin, Jianyi; Zeng, Hua Chun

2012-01-01

We have developed a low-cost reaction protocol to synthesize mesoporous Nb 2O 5-based solid acid catalysts with external shape control. In the synthesis, monodisperse glycolated niobium oxide spheres (GNOS) were prepared by means of a simple antisolvent precipitation approach and subsequently converted to mesoporous niobium oxide spheres (MNOS) with a large surface area of 312m 2g -1 by means of the hydrothermal treatment. The antisolvent acetone used to obtain GNOS was recovered through distillation at high purity. The obtained mesoporous MNOS were functionalized further with sulfate anions at different temperatures or incorporated with tungstophosphoric acid to obtain recyclable solid acid catalysts. These MNOS-based catalysts showed excellent performance in a wide range of acid-catalyzed reactions, such as Friedel-Crafts alkylation, esterification, and hydrolysis of acetates. As they are monodisperse spheres with diameters in the submicrometer range, the catalysts can be easily separated and reused. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Investigation of the behaviour of solid acid catalysts for acylations and cyanisations of aromatics. Final report; Untersuchungen zur Wirkungsweise von festen sauren Katalysatoren bei Acylierungen und Cyanierungen von Aromaten. Abschlussbericht

Energy Technology Data Exchange (ETDEWEB)

Kemnitz, E.

2002-01-01

The present state of the art in the field of FRIEDEL-CRAFTS-ACYLATIONS is characterized by the application of homogenous catalysts (at least stochiometric amounts) like AlCl{sub 3} or FeCl{sub 3}. Problems arising from this application are corrosions, difficult product separations from the catalyst and the origin of acid waste water. Hence, the aim of this project was the development of suitable solid catalysts which overcome the problems ascribed above. Sulfated zirconia (SZ) was found to be an excellent solid Br.o/nsted-acid to be used especially in their aerogel or cryogel form. Thus with this catalyst system, in the benzoylation of anisol nearly 100% conversion may be achieved. In this way it could be proved, that with SZ a solid Br.o/nsted-acid might be available which gives reasonable hope to substitute in a near future, at least for some reactions, the classical homogeneous catalysts and to overcome their problems in use. (orig.)

Antisolvent Precipitation for the Synthesis of Monodisperse Mesoporous Niobium Oxide Spheres as Highly Effective Solid Acid Catalysts

KAUST Repository

Li, Cheng Chao

2012-03-20

We have developed a low-cost reaction protocol to synthesize mesoporous Nb 2O 5-based solid acid catalysts with external shape control. In the synthesis, monodisperse glycolated niobium oxide spheres (GNOS) were prepared by means of a simple antisolvent precipitation approach and subsequently converted to mesoporous niobium oxide spheres (MNOS) with a large surface area of 312m 2g -1 by means of the hydrothermal treatment. The antisolvent acetone used to obtain GNOS was recovered through distillation at high purity. The obtained mesoporous MNOS were functionalized further with sulfate anions at different temperatures or incorporated with tungstophosphoric acid to obtain recyclable solid acid catalysts. These MNOS-based catalysts showed excellent performance in a wide range of acid-catalyzed reactions, such as Friedel-Crafts alkylation, esterification, and hydrolysis of acetates. As they are monodisperse spheres with diameters in the submicrometer range, the catalysts can be easily separated and reused. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.