Chemical and biological evaluation of rejects from the wood industry.

Este estudo visa a caracterização química e a avaliação da atividade antimicrobiana de extratos obtidos a partir de rejeitos resultantes do beneficiamento de madeiras nobres comercializadas no Paraná: Peroba-Rosa (Aspidosperma sp.), Roxinho (Peltogyne sp.), Jatobá (Hymenaea sp.), Curupixá (Micropholis sp.), Itaúba (Mezilaurus sp.), Cedrilho (Erisma sp.) e Imbúia-do-Norte (Licaria sp.), cujas identificações botânicas basearam-se em estudos anatômicos. Os extratos foram preparados com diversos solventes, analisados por CCD e espectrometria UV/VIS, testando-se contra: Proteus mirabilis ATCC15290, Escherichia coli ATCC25922, Enterobacter aerogenes ATCC13048, Staphylococcus aureus ATCC25923, Micrococcus luteus ATCC9341, Klebsiella pneumoniae ATCC13883, Pseudomonas aeroginosa ATCC27853, e Staphylococcus aureus, Streptococcus mutans e Bacillus cereus isolados da clínica. O extrato etanólico de Peroba-Rosa, contendo alcalóides, apresentou atividade contra P. mirabilis. Os extratos metanólicos do Jatobá, Itaúba e Imbúia, contendo fenóis, e o extrato de Roxinho obtido com acetato de etila contendo fenóis e terpenóides, foram ativos contra K. pneumoniae, M. luteus, E. coli, S. aureus e P. mirabilis. Nenhum dos extratos foi ativo contra P. aeroginosa, S. mutans e E. aerogenes

Current assessment of the Red Rectangle band problem

In this paper we discuss our insights into several key problems in the identification of the Red Rectangle Bands (RRBs). We have combined three independent sets of observations in order to try to define the constraints guiding the bands. We provide a summary of the general behavior of the bands and review the evidence for a molecular origin of the bands. The extent, composition, and possible absorption effects of the bands are discussed. Comparison spectra of the strongest band obtained at three different spectral resolutions suggests that an intrinsic line width of individual rotational lines can be deduced. Spectroscopic models of several relatively simple molecules were examined in order to investigate where the current data are weak. Suggestions are made for future studies to enhance our understanding of these enigmatic bands

INFORMATION LITERACY STRATEGY: A CASE STUDY OF THE MANAGEMENT DEPARTMENT AT THE U.S. COAST GUARD ACADEMY

Izazov akademskog istraživanja nije pronaći informacije nego odabrati, organizirati i procijeniti valjanost i pouzdanost dostupnih informacija. Ovaj rad predstavlja strategiju Informacijske pismenosti (IP) koja je razvijena za unaprjeđenje IP vještina u preddiplomskom programu na Odjelu za menadžment USCG akademije. Autori demonstriraju IP strategije unutar kolegija kojeg predaju i pokazuju kako integrirana IP strategija odgovara na obrazovne IP standarde i zahtjeve. Rad navodi IP vježbe koje su razvijene i korištene u sljedećim kolegijima: Principi makroekonomije (prva godina); Organizacijsko ponašanje i vodstvo (druga godina); Uvod u biznis (druga godina); Marketing (treća godina); i Sustavi upravljanja informacijama (treća godina). Svaki kolegij pružen unutar studija Menadžmenta služi kao model razvoja IP vještina koje su strukturirane za razvoj IP vještina sekvencijalno od prve do zadnje godine preddiplomskog programa.The challenge of academic research is not to find information but to select, organize, and evaluate the validity and reliability of the information available. The paper presents the Information Literacy (IL) strategy that has been developed for the advancement of IL skills in an undergraduate program in the Management Department at the USCG Academy. The authors demonstrate IL strategies within the coursework they teach and how an integrated IL strategy responds to educational IL standards and requirements. The paper lists the IL exercises that were developed and used in the following courses: Macroeconomics Principles (freshman level); Organizational Behavior and Leadership (sophomore level); Introduction to Business (sophomore level); Marketing (junior level); and Management Information Systems (junior level). Each course provided within Management major serves as a model for the development of the IL skills that are structured to develop the IL skills sequentially from freshman to senior year in an undergraduate program

Strategija informacijske pismenosti: primjer Odjela za menadžment na Američkoj akademiji obalne straže

The challenge of academic research is not to find information but to select, organize, and evaluate the validity and reliability of the information available. The paper presents the Information Literacy (IL) strategy that has been developed for the advancement of IL skills in an undergraduate program in the Management Department at the USCG Academy. The authors demonstrate IL strategies within the coursework they teach and how an integrated IL strategy responds to educational IL standards and requirements. The paper lists the IL exercises that were developed and used in the following courses: Macroeconomics Principles (freshman level); Organizational Behavior and Leadership (sophomore level); Introduction to Business (sophomore level); Marketing (junior level); and Management Information Systems (junior level). Each course provided within Management major serves as a model for the development of the IL skills that are structured to develop the IL skills sequentially from freshman to senior year in an undergraduate program.Izazov akademskog istraživanja nije pronaći informacije nego odabrati, organizirati i procijeniti valjanost i pouzdanost dostupnih informacija. Ovaj rad predstavlja strategiju Informacijske pismenosti (IP) koja je razvijena za unaprjeđenje IP vještina u preddiplomskom programu na Odjelu za menadžment USCG akademije. Autori demonstriraju IP strategije unutar kolegija kojeg predaju i pokazuju kako integrirana IP strategija odgovara na obrazovne IP standarde i zahtjeve. Rad navodi IP vježbe koje su razvijene i korištene u sljedećim kolegijima: Principi makroekonomije (prva godina); Organizacijsko ponašanje i vodstvo (druga godina); Uvod u biznis (druga godina); Marketing (treća godina); i Sustavi upravljanja informacijama (treća godina). Svaki kolegij pružen unutar studija Menadžmenta služi kao model razvoja IP vještina koje su strukturirane za razvoj IP vještina sekvencijalno od prve do zadnje godine preddiplomskog programa

INFORMATION LITERACY STRATEGY: A CASE STUDY OF THE MANAGEMENT DEPARTMENT AT THE U.S. COAST GUARD ACADEMY

Izazov akademskog istraživanja nije pronaći informacije nego odabrati, organizirati i procijeniti valjanost i pouzdanost dostupnih informacija. Ovaj rad predstavlja strategiju Informacijske pismenosti (IP) koja je razvijena za unaprjeđenje IP vještina u preddiplomskom programu na Odjelu za menadžment USCG akademije. Autori demonstriraju IP strategije unutar kolegija kojeg predaju i pokazuju kako integrirana IP strategija odgovara na obrazovne IP standarde i zahtjeve. Rad navodi IP vježbe koje su razvijene i korištene u sljedećim kolegijima: Principi makroekonomije (prva godina); Organizacijsko ponašanje i vodstvo (druga godina); Uvod u biznis (druga godina); Marketing (treća godina); i Sustavi upravljanja informacijama (treća godina). Svaki kolegij pružen unutar studija Menadžmenta služi kao model razvoja IP vještina koje su strukturirane za razvoj IP vještina sekvencijalno od prve do zadnje godine preddiplomskog programa.The challenge of academic research is not to find information but to select, organize, and evaluate the validity and reliability of the information available. The paper presents the Information Literacy (IL) strategy that has been developed for the advancement of IL skills in an undergraduate program in the Management Department at the USCG Academy. The authors demonstrate IL strategies within the coursework they teach and how an integrated IL strategy responds to educational IL standards and requirements. The paper lists the IL exercises that were developed and used in the following courses: Macroeconomics Principles (freshman level); Organizational Behavior and Leadership (sophomore level); Introduction to Business (sophomore level); Marketing (junior level); and Management Information Systems (junior level). Each course provided within Management major serves as a model for the development of the IL skills that are structured to develop the IL skills sequentially from freshman to senior year in an undergraduate program

Wishing for deburdening through a sustainable control after bariatric surgery

The aim of this study was an in-depth investigation of the change process experienced by patients undergoing bariatric surgery. A prospective interview study was performed prior to as well as 1 and 2 years after surgery. Data analyses of the transcribed interviews were performed by means of the Grounded Theory method. A core category was identified: Wishing for deburdening through a sustainable control over eating and weight, comprising three related categories: hoping for deburdening and control through surgery, feeling deburdened and practising control through physical restriction, and feeling deburdened and trying to maintain control by own willpower. Before surgery, the participants experienced little or no control in relation to food and eating and hoped that the bariatric procedure would be the first brick in the building of a foundation that would lead to control in this area. The control thus achieved in turn affected the participants' relationship to themselves, their roles in society, and the family as well as to health care. One year after surgery they reported established routines regarding eating as well as higher self-esteem due to weight loss. In family and society they set limits and in relation to health care staff they felt their concern and reported satisfaction with the surgery. After 2 years, fear of weight gain resurfaced and their self-image was modified to be more realistic. They were no longer totally self-confident about their condition, but realised that maintaining control was a matter of struggle to obtaining a foundation of sustainable control. Between 1 and 2 years after surgery, the physical control mechanism over eating habits started to more or less fade for all participants. An implication is that when this occurs, health care professionals need to provide interventions that help to maintain the weight loss in order to achieve a good long-term outcome

Absolute quantification of Medicago truncatula sucrose synthase isoforms and N-metabolism enzymes in symbiotic root nodules and the detection of novel nodule phosphoproteins by mass spectrometry

Mass spectrometry (MS) has become increasingly important for tissue specific protein quantification at the isoform level, as well as for the analysis of protein post-translational regulation mechanisms and turnover rates. Thanks to the development of high accuracy mass spectrometers, peptide sequencing without prior knowledge of the amino acid sequence—de novo sequencing—can be performed. In this work, absolute quantification of a set of key enzymes involved in carbon and nitrogen metabolism in Medicago truncatula ‘Jemalong A17’ root nodules is presented. Among them, sucrose synthase (SuSy; EC 2.4.1.13), one of the central enzymes in sucrose cleavage in root nodules, has been further characterized and the relative phosphorylation state of the three most abundant isoforms has been quantified. De novo sequencing provided sequence information of a so far unidentified peptide, most probably belonging to SuSy2, the second most abundant isoform in M. truncatula root nodules. TiO2-phosphopeptide enrichment led to the identification of not only a phosphorylation site at Ser11 in SuSy1, but also of several novel phosphorylation sites present in other root nodule proteins such as alkaline invertase (AI; EC 3.2.1.26) and an RNA-binding protein

Insights into the ceria-catalyzed ketonization reaction for biofuels applications

The ketonization of small organic acids is a valuable reaction for biorenewable applications. Ceria has long been used as a catalyst for this reaction; however, under both liquid and vapor phase conditions, it was found that given the right temperature regime of about 150-300 °C, cerium oxide, which was previously believed to be a stable catalyst for ketonization, can undergo bulk transformations. This result, along with other literature reports, suggest that the long held belief of two separate reaction pathways for either bulk or surface ketonization reactions are not required to explain the interaction of cerium oxide with organic acids. X-ray photon spectroscopy, scanning electron microscopy, and temperature programmed decomposition results supported the formation of metal acetates and explained the occurrence of cerium reduction as well as the formation of cerium oxide/acetate whiskers. After thermogravimetry/mass spectrometry and FT-IR experiments, a single reaction sequence is proposed that can be applied to either surface or bulk reactions with ceria

Effect of Gas Atmosphere on Catalytic Behaviour of Zirconia, Ceria and Ceria Zirconia Catalysts in Valeric Acid Ketonization

[EN] Ketonization of valeric acid, which can be obtained by lignocellulosic biomass conversion, was carried out in a fixed bed flow reactor over ZrO2, 5-20 % CeO2/ZrO2 and CeO2 both under hydrogen and nitrogen stream at 628 K and atmospheric pressure. Regardless gas-carrier 10 wt% CeO2/ZrO2 was found to show higher catalytic activity compared to zirconia per se as well as other ceria modified zirconia while ceria per se exhibited very low catalytic activity. All catalysts provided higher acid conversion in H-2 than in N-2 whereas selectivity to 5-nonanone was insensitive to gas atmosphere. XRD, FTIR, UV-Vis DRS, XPS, HRTEM methods were applied to characterize catalysts in reduced and unreduced states simulating corresponding reaction conditions during acid ketonization. XRD did not reveal any changes in zirconia and ceria/zirconia lattice parameters as well as crystalline phase depending on gas atmosphere while insertion of ceria in zirconia caused notable increase in lattice parameter indicating some distortion of crystalline structure. According to XPS, FTIR and UV-Vis methods, the carrier gas was found to affect catalyst surface composition leading to alteration in Lewis acid sites ratio. Appearance of Zr3+ cations was observed on the ZrO2 surface after hydrogen pretreatment whereas only Zr4+ cations were determined using nitrogen as a gas-carrier. These changes of catalyst's surface cation composition affected corresponding activity in ketonization probably being crucial for reaction mechanism involving metal cations catalytic centers for acid adsorption and COO- stabilization at the initial step.Financial support from the Russian Foundation of Basic Research (RFBR Grant No 11-03-94001-CSIC) is gratefully acknowledged. This work was supported by the Federal Program "Scientific and Educational Cadres of Russia'' (Grant No 2012-1.5-12-000-1013-002). The authors also wish to thank Dr. Evgeniy Gerasimov, Dr. Igor Prosvirin, Dr. Demid Demidov from the Department of Physicochemical Methods at the Boreskov Institute of Catalysis for TEM and XPS measurements.Zaytseva, YA.; Panchenko, VN.; Simonov, MN.; Shutilov, AA.; Zenkovets, GA.; Renz, M.; Simakova, IL.... (2013). Effect of Gas Atmosphere on Catalytic Behaviour of Zirconia, Ceria and Ceria Zirconia Catalysts in Valeric Acid Ketonization. Topics in Catalysis. 56(9-10):846-855. https://doi.org/10.1007/s11244-013-0045-yS846855569-10Alonso DM, Bond JQ, Dumesic JA (2010) Green Chem 12:1493–1513Serrano-Ruiz JC, Wang D, Dumesic JA (2010) Green Chem 12:574–577Malhotra SL, Wong RW, Breton MP (2002) Patent US 6461417Westfechtel A, Breucker C, Gutsche B, Jeromin L, Eierdanz H, Baumann H, Schmid KH, Nonnenkamp W (1993) Patent DE 4121117Seipel W, Hensen H, Boyxen N (2001) Patent DE 19958521Tomlinson AD (2001) Patent WO 2001094522Glinski M, Kijenski J, Jakubowski A (1995) Appl Catal A Gen 128:209–217Glinski M, Kijenski J (2000) React Kinet Catal Lett 69:123–128Parida K, Mishra HK (1999) J Mol Catal A Chem 139:73–80Serrano-Ruiz JC, Dumesic JA (2009) Green Chem 11:1101–1104Serrano-Ruiz JC, Dumesic JA (2009) ChemSusChem 2:581–586Leung A, Boocock DGB, Konar SK (1995) Energy Fuels 9:913–920Gaertner CA, Serrano-Ruiz JC, Braden DJ, Dumesic JA (2010) Ind Eng Chem Res 49:6027–6033Saito N (1996) Patent JP 08198796Yakerson VI, Rubinshtein AM, Gorskaya LA (1970) Patent GB 1208802Graille J, Pioch D (1991) Patent EP 457665Pioch D, Lescure R, Graille J (1995) Ol Corps Gras Lipides 2:386–389Mueller-Erlwein E, Rosenberger B (1990) Chem Ing Tech 62:512–513Corma A, Renz M, Schaverien C (2008) ChemSusChem 1:739–741Bayer (1911) Patent DE 256622Vavon G, Apchie A (1928) Bull Soc Chim 43:667–677Thorpe JF, Kon GAR (1941) Org Synth 1:192–194Nagashima O, Sato S, Takahashi R, Sodesawa T (2005) J Mol Catal A Chem 227:231–239Klein-Homann W (1988) Patent DE 3709765Stubenrauch J, Brisha E, Vohs JM (1996) Catal Today 28:431–441Pulido A, Oliver-Tomas B, Renz M, Boronat M, and Corma A (2013) ChemSusChem 6:141–151Hendren TS, Dooley KM (2003) Catal Today 85:333–351Novothy R, Paulsen S (1963) Patent DE 1158050Kim KS, Barteau MA (1990) J Catal 125:353–375Pestman R, Van Duijne A, Pieterse JAZ, Ponec V (1995) J Mol Catal A 103:175–180Martinez R, Huff MC, Barteau MA (2004) J Catal 222:404–409Matsuoka K, Tagawa K (1985) Patent JP 61207354Shutilov AA, Simonov MN, Zaytseva YuA, Zenkovets GA, and Simakova IL (2013) Kinet Catal 54:184–192Kuriacose JC, Swaminathan R (1969) J Catal 14:348–354Swaminathan R, Kuriacose JC (1970) J Catal 16:357–362Cressely J, Farkhani D, Deluzarche A, Kiennemann A (1984) Mater Chem Phys 11:413–431Kuriacose JC, Jewur SS (1977) J Catal 50:330–341Renz M, Corma A (2004) Eur J Org Chem 2004:2036–2039Taimoor AA, Favre-Reguillon A, Vanoye L, Pitault I (2012) Catal Sci Technol 2:359–363Kustov LM (1997) Top Catal 4:131–144Emmanuel NM (1978) Usp Khim 8:1329–1396Kaspar J, Fornasiero P (2002) In: Trovarelli A (ed) Catalysis by ceria and related materials. Imperial College Press, LondonReddy DD, Chowdhury B, Smirniotis PG (2001) Appl Catal A Gen 211:19–30Rango R, Kaspar G, Meriani S, di Monte R, Graziani M (1994) Catal Lett 24:107–112Rao G, Sahu H (2001) Proc Indian Acad Sci (Chem Sci) 113:651–658Navío JA, Hidalgo MC, Colón G, Botta SG, Litter MI (2001) Langmuir 17:202–210Timofeeva MN, Jhung SH, Hwang YK, Kim DK, Panchenko VN, Melgunov MS, Chesalov YA, Chang JS (2007) Appl Catal A Gen 317:1–10Kaneko H, Taku S, Tamaura Y (2011) Sol Energy 85:2321–2330Maia TA, Assaf JM, Assaf EM (2012) Mater Chem Phys 132:1029–1034Zhou HP, Si R, Song WG, Yan CH (2009) J Solid State Chem 182:2475–2485Si R, Zhang YW, Li SJ, Lin BX, Yan CH (2004) J Phys Chem B 108:12481–12488Hadjivanov KI, Vayssilov GN (2002) Adv Catal 47:307–511Vivier L, Duprez D (2010) ChemSusChem 3:654–678Vidruk R, Landau MV, Herskowitz M, Ezersky V, Goldbourt A (2011) J Catal 282:215–227Binet C, Daturi M, Lavalley JC (1999) Catal Today 50:207–225Conesa J (1995) Surf Sci 339:337–35