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You searched for: Publication Year 2013 Remove constraint Publication Year: 2013 Source 2013 v.67 no.5 Remove constraint Source: 2013 v.67 no.5
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1. Adenosine Monophosphate Affects Competence Development and Plasmid DNA Transformation in Escherichia coli

Author:
Yan Zhang; Wenhua Li; Liming Wang; Ping Shen; Zhixiong Xie
Source:
Current microbiology 2013 v.67 no.5 pp. 550-556
ISSN:
0343-8651
Subject:
Escherichia coli; Haemophilus; adenosine monophosphate; calcium chloride; genes; genetic engineering; influenza; molecular biology; plasmids
Abstract:
... Artificial plasmid DNA transformation of Escherichia coli induced by calcium chloride is a routine technique in molecular biology and genetic engineering processes, but its mechanism has remained elusive. Because adenosine monophosphate (AMP) has been found to regulate natural transformation in Haemophilus influenza, we aimed to investigate the effects of AMP and its derivatives on E. coli transfo ...
DOI:
10.1007/s00284-013-0400-z
PubMed:
23743599

2. Behavioral type–environment correlations in the field: a study of three-spined stickleback

Author:
Simon Pearish; Lauren Hostert; Alison M. Bell
Source:
Behavioral ecology and sociobiology 2013 v.67 no.5 pp. 765-774
ISSN:
0340-5443
Subject:
fish; microhabitats; phenotypic plasticity; rivers
Abstract:
... Behavioral type–environment correlations occur when specific behavioral types of individuals are more common in certain environments. Behavioral type–environment correlations can be generated by several different mechanisms that are probably very common such as niche construction and phenotypic plasticity. Moreover, behavioral type–environment correlations have important ecological and evolutionar ...
DOI:
10.1007/s00265-013-1500-2

3. Biorefinery in a pulp mill: simultaneous production of cellulosic fibers from Eucalyptus globulus by soda-anthraquinone cooking and surface-active agents

Author:
Marion Sanglard; Christine Chirat; Bevan Jarman; Dominique Lachenal
Source:
Holzforschung 2013 v.67 no.5 pp. 481-488
ISSN:
1437-434X
Subject:
Eucalyptus globulus; biorefining; carbohydrates; cellulosic fibers; cooking; fatty alcohols; hydrophilicity; hydrophobicity; lignin; oxygen pulping; pulp; temperature; wood chips
Abstract:
... Industrial Eucalyptus globulus wood chips were submitted to different autohydrolysis conditions followed by kraft cooking and soda-anthraquinone cooking. The autohydrolyzed wood chips were much easier to delignify than the control wood chips. Soda-anthraquinone cooking could be performed at a cooking temperature that was 20°C lower than that for the kraft cooking on control wood chips. Furthermore ...
DOI:
10.1515/hf-2012-0178

4. Brood-care experience, nursing performance, and neural development in the ant Pheidole dentata

Author:
Mario L. Muscedere; Anisa Djermoun; James F. A. Traniello
Source:
Behavioral ecology and sociobiology 2013 v.67 no.5 pp. 775-784
ISSN:
0340-5443
Subject:
Pheidole; adults; brain; dopamine; neurodevelopment; ontogeny; serotonin; social insects
Abstract:
... Social insect workers mature behaviorally and physiologically with increasing age, generally transitioning from or adding new tasks to their existing repertoire of within-nest nursing tasks. As adult minor workers of the ant Pheidole dentata age, they attend to brood more frequently and nurse more efficiently, perform a broader array of tasks, and undergo myological and neural development. Because ...
DOI:
10.1007/s00265-013-1501-1

5. Characterization of the pore structure of nanoporous activated carbons produced from wood waste

Author:
Galina Dobele; Darya Vervikishko; Aleksandrs Volperts; Nikolay Bogdanovich; Evgeny Shkolnikov
Source:
Holzforschung 2013 v.67 no.5 pp. 587-594
ISSN:
1437-434X
Subject:
Alnus rhombifolia; Betula pendula; activated carbon; catalysts; electrodes; evaporation; nanopores; phosphoric acid; sodium hydroxide
Abstract:
... Highly developed nanoporous carbon materials have been prepared by a two-stage thermocatalytic process. In the first step, alder (Alnus rhombifolia) and birchwood (Betula pendula) were carbonized with and without a dehydration catalyst (H₃PO₄); in the second step, the material was activated by means of NaOH. The dependence of the porous structure of activated carbons from process parameters was ch ...
DOI:
10.1515/hf-2012-0188

6. Chemistry and kraft pulping of seven hybrid aspen clones. Dimension measurements on the vessels and UMSP of the cell walls

Author:
Inese Sable; Uldis Grinfelds; Martins Zeps; Ilze Irbe; Guna Noldt; Aris Jansons; Arnis Treimanis; Gerald Koch
Source:
Holzforschung 2013 v.67 no.5 pp. 505-510
ISSN:
1437-434X
Subject:
Populus tremula; Populus tremuloides; cell walls; cellulose; chemical composition; clones; cooking; cutting; hybrids; kraft pulping; lignin; micropropagation; phenotype; plus trees; pulp; Latvia
Abstract:
... Micropropagated hybrid aspen clones (Populus tremuloides Michx.×Populus tremula L.) and a plus-tree (superior phenotypes selected) aspen (Populus tremula L.) were grown under similar conditions in the central part of Latvia. After cutting at the age of 12 years, 64 sample trees were examined. The dimensions of the vessels and the content of cellulose, lignin, extractives and ash were determined. T ...
DOI:
10.1515/hf-2012-0184

7. Colony take-over and brood survival in temporary social parasites of the ant genus Formica

Author:
Anton Chernenko; Marta Vidal-Garcia; Heikki Helanterä; Liselotte Sundström
Source:
Behavioral ecology and sociobiology 2013 v.67 no.5 pp. 727-735
ISSN:
0340-5443
Subject:
Formica fusca; eggs; hosts; males; parasites; progeny; pupation; risk; social parasitism
Abstract:
... Parasites reduce host fitness, and so instigate counter adaptations by their hosts. In temporary social parasitism, usurpers must not only enter the colony unharmed, but also have their eggs reared by the host workers. We introduced parasitic Formica lugubris and Formica aquilonia queens into queen right and orphaned fragments of three host species, Formica cinerea, Formica picea and Formica fusca ...
DOI:
10.1007/s00265-013-1496-7

8. Communal nesting in an ‘asocial’ mammal: social thermoregulation among spatially dispersed kin

Author:
Cory T. Williams; Jamieson C. Gorrell; Jeffrey E. Lane; Andrew G. McAdam; Murray M. Humphries; Stan Boutin
Source:
Behavioral ecology and sociobiology 2013 v.67 no.5 pp. 757-763
ISSN:
0340-5443
Subject:
Tamiasciurus hudsonicus; females; heat production; kin selection; lactation; nesting; nests; population structure; social behavior; spring; squirrels; thermoregulation; winter
Abstract:
... Communal nesting can help defray the high cost of endothermic heat production in cold environments, but such social behavior is generally thought to be incompatible with the persistent defense of exclusive territories in typically ‘asocial’ animals. We examined the propensity for communal nesting in female red squirrels (Tamiasciurus hudsonicus), which maintain individual year-round territories, t ...
DOI:
10.1007/s00265-013-1499-4

9. A Comparison of Effects of Broad-Spectrum Antibiotics and Biosurfactants on Established Bacterial Biofilms

Author:
Gerry A. Quinn; Aaron P. Maloy; Malik M. Banat; Ibrahim M. Banat
Source:
Current microbiology 2013 v.67 no.5 pp. 614-623
ISSN:
0343-8651
Subject:
Bacillus subtilis; Staphylococcus aureus; ampicillin; bacteria; biofilm; biomass; biosurfactants; microbial growth; microbial physiology
Abstract:
... Current antibiofilm solutions based on planktonic bacterial physiology have limited efficacy in clinical and occasionally environmental settings. This has prompted a search for suitable alternatives to conventional therapies. This study compares the inhibitory properties of two biological surfactants (rhamnolipids and a plant-derived surfactant) against a selection of broad-spectrum antibiotics (a ...
DOI:
10.1007/s00284-013-0412-8
PubMed:
23783562

10. Contribution of xylan to the brightness development and stability in the final ECF bleaching of eucalypt (Eucalyptus globulus Labill.) kraft pulp

Author:
Pedro E.G. Loureiro; Joana I.T. Sousa; M. Graça. V.S. Carvalho; Dmitry V. Evtuguin
Source:
Holzforschung 2013 v.67 no.5 pp. 497-503
ISSN:
1437-434X
Subject:
Eucalyptus globulus; Raman spectroscopy; bleaching; gel chromatography; hydrogen peroxide; kraft pulp; nuclear magnetic resonance spectroscopy; ultraviolet-visible spectroscopy; xylan; xylanases
Abstract:
... Xylans isolated from eucalypt kraft pulps have been characterized by modern analytical methods. The pulps were partially bleached (DEOPD) and fully bleached with either a final ClO₂ (DEOPDD) or an alkaline H₂O₂ (DEOPDP) bleaching stage. Alternatively, xylan isolated from the DEOPD pulp was treated with ClO₂ or with H₂O₂ under the same conditions as pulps in a final bleaching stage and were further ...
DOI:
10.1515/hf-2012-0185

11. Determination of the diffusion of monovalent cations into wood under isothermal conditions based on LiCl impregnation of Norway spruce

Author:
Reddysuresh Kolavali; Hans Theliander
Source:
Holzforschung 2013 v.67 no.5 pp. 559-565
ISSN:
1437-434X
Subject:
Picea abies; cations; diffusivity; lithium chloride; mass transfer; nitric acid; pulping; spectroscopy; temperature; wood; wood anatomy
Abstract:
... The impregnation of wood pieces in the course of pulping can be divided into primary (advective mass transport) and secondary (diffusive mass transport) penetration. Little is known about the latter partly because of the difficulties in the determination of the relevant diffusivities for this system. In the present article, a precise experimental methodology has been developed to measure the conce ...
DOI:
10.1515/hf-2012-0182

12. Dissecting the mechanisms underlying old male mating advantage in a butterfly

Author:
Isabell Karl; Stéphanie Heuskin; Klaus Fischer
Source:
Behavioral ecology and sociobiology 2013 v.67 no.5 pp. 837-849
ISSN:
0340-5443
Subject:
Bicyclus anynana; butterflies; flight; males; pheromone blends; sex pheromones
Abstract:
... Selection is expected to maximize an individual’s own genetic reward regardless of the potential fitness consequences for its sexual partners, which may cause sexual conflict. Although performance in holometabolous insects typically diminishes with age, old male mating advantage has been documented in a few species. Whether this pattern arises from female preference for older males based on, e.g., ...
DOI:
10.1007/s00265-013-1507-8

13. Distribution of Allelic Variants of the Chromosomal Gene bla OXA₋₁₁₄₋ₗᵢₖₑ in Achromobacter xylosoxidans Clinical Isolates

Author:
German Matías Traglia; Marisa Almuzara; Andrea Karina Merkier; Mariana Papalia; Laura Galanternik; Marcela Radice; Carlos Vay; Daniela Centrón; María Soledad Ramírez
Source:
Current microbiology 2013 v.67 no.5 pp. 596-600
ISSN:
0343-8651
Subject:
Achromobacter xylosoxidans; alleles; cystic fibrosis; patients
Abstract:
... Achromobacter xylosoxidans is increasingly being documented in cystic fibrosis patients. The bla OXA₋₁₁₄ gene has been recognized as a naturally occurring chromosomal gene, exhibiting different allelic variants. In the population under study, the bla OXA₋₁₁₄₋ₗᵢₖₑ gene was found in 19/19 non-epidemiological-related clinical isolates of A. xylosoxidans with ten different alleles including 1 novel OX ...
DOI:
10.1007/s00284-013-0407-5

14. Distribution of the Entomopathogenic Fungus Beauveria bassiana in Rice Ecosystems and Its Effect on Soil Enzymes

Author:
Yong Jia; Jia-Yu Zhou; Jia-Xi He; Wei Du; Yuan-Qing Bu; Chang-Hong Liu; Chuan-Chao Dai
Source:
Current microbiology 2013 v.67 no.5 pp. 631-636
ISSN:
0343-8651
Subject:
Beauveria bassiana; conidia; ecosystems; entomopathogenic fungi; enzyme activity; host plants; leaves; paddy soils; pest control; rice; roots; seeds; soil ecology; soil enzymes; stems
Abstract:
... Fungal entomopathogens, especially Beauveria bassiana, are often studied within the context of their use in biological pest control; however, there is limited knowledge of their distributions in host plants and soil ecosystem. We examined the distribution of B. bassiana and its influence on rice plants and paddy soils. B. bassiana could only be detected on the foliar surfaces of rice plants within ...
DOI:
10.1007/s00284-013-0414-6
PubMed:
23794015

15. Diverse Deep-Sea Fungi from the South China Sea and Their Antimicrobial Activity

Author:
Xiao-Yong Zhang; Yun Zhang; Xin-Ya Xu; Shu-Hua Qi
Source:
Current microbiology 2013 v.67 no.5 pp. 525-530
ISSN:
0343-8651
Subject:
Acremonium; Ajellomyces; Aspergillus; Aureobasidium; Cladosporium; Micrococcus luteus; Penicillium; Torula; Xylaria; antibacterial properties; antibiotics; antifungal properties; bacteria; fungal communities; fungi; internal transcribed spacers; screening; sediments; South China Sea
Abstract:
... We investigated the diversity of fungal communities in nine different deep-sea sediment samples of the South China Sea by culture-dependent methods followed by analysis of fungal internal transcribed spacer (ITS) sequences. Although 14 out of 27 identified species were reported in a previous study, 13 species were isolated from sediments of deep-sea environments for the first report. Moreover, the ...
DOI:
10.1007/s00284-013-0394-6
PubMed:
23736224

16. Diversity of Gene Cassette Promoter Variants of Class 1 Integrons in Uropathogenic Escherichia coli

Author:
Quhao Wei; Xiaofei Jiang; Min Li; Gang Li; Qingfeng Hu; Huoxiang Lu; Guoqiang Chen; Yonglie Zhou; Yuan Lu
Source:
Current microbiology 2013 v.67 no.5 pp. 543-549
ISSN:
0343-8651
Subject:
amikacin; antibiotic resistance; bacteria; chloramphenicol; genes; phenotype; tobramycin; trimethoprim; uropathogenic Escherichia coli
Abstract:
... Class 1 integrons play important roles in the emergence and horizontal transfer of antibiotic resistance genes among bacteria. The gene cassette promoter variants Pc or Pc-P2 of class 1 integrons not only drive the transcription of downstream gene cassettes, they also correlate with the excision and integration efficiency of the capture exogenous gene cassettes. In this study, the diversity of Pc ...
DOI:
10.1007/s00284-013-0399-1
PubMed:
23743598

17. Effects of dietary supplementation of Bacillus amyloliquefaciens CECT 5940 and Enterococcus faecium CECT 4515 in adult healthy dogs

Author:
Gemma González-Ortiz; Lorena Castillejos; Juan José Mallo; Mª Àngels Calvo-Torras; Mª Dolores Baucells
Source:
Archives of animal nutrition 2013 v.67 no.5 pp. 406-415
ISSN:
1477-2817
Subject:
Bacillus amyloliquefaciens; Beagle; Clostridium; Enterococcus faecium; adults; dietary supplements; digestibility; dogs; feces; females; finishing; males; pH; plate count; probiotics
Abstract:
... The aim of this study was to evaluate the effect of a probiotic preparation consisting of two probiotic strains, Bacillus amyloliquefaciens CECT 5940 and Enterococcus faecium CECT 4515 (each 5 · 10⁸ CFU/g feed), on faecal consistency, faecal microbiology and nutrient digestibility in adult healthy dogs. Sixteen beagles (eight males and eight females) were divided into two groups: the Control group ...
DOI:
10.1080/1745039X.2013.830517
PubMed:
23952642

18. Effects of inclusion level on nutrient digestibility and energy content of wheat middlings and soya bean meal for growing pigs

Author:
Qiang Huang; Xiangshu Piao; Ling Liu; Defa Li
Source:
Archives of animal nutrition 2013 v.67 no.5 pp. 356-367
ISSN:
1477-2817
Subject:
bean meal; carbohydrates; corn; diet; digestibility; digestible energy; energy; energy content; equations; ingredients; metabolizable energy; middlings; nutrients; organic matter; soybean meal; swine
Abstract:
... Two experiments were conducted to determine the effects of inclusion level of wheat middlings and soya bean meal on apparent total tract digestibility (ATTD) of energy and chemical components of these ingredients in growing pigs. Furthermore, the effects of the inclusion level on their contents of digestible energy (DE) and metabolisable energy (ME) were also determined by the difference method. I ...
DOI:
10.1080/1745039X.2013.837233
PubMed:
24070389

19. Elaboration of multilayered thin films based on cellulose nanocrystals and cationic xylans: application to xylanase activity detection

Author:
Abir Dammak; Céline Moreau; Nadège Beury; Katrin Schwikal; Heiko T. Winter; Estelle Bonnin; Bodo Saake; Bernard Cathala
Source:
Holzforschung 2013 v.67 no.5 pp. 579-586
ISSN:
1437-434X
Subject:
atomic force microscopy; cellulose; color; colorimetry; enzymatic hydrolysis; nanocrystals; reducing sugars; screening; silicon; xylanases
Abstract:
... Multilayered thin films have been prepared by means of the “spin-assisted electrostatic layer-by-layer self-assembly” method, in which cellulose nanocrystals (CN) and cationic xylans (CX) are alternatively deposited up to 10 times on a rotating silicon wafer. The film growth process was studied and the thickness increment was found to be equal to 23 nm per bilayer. This value is relatively high in ...
DOI:
10.1515/hf-2012-0176

20. Evolution of mating systems and sexual size dimorphism in North American cyprinids

Author:
M. Pyron; T. E. Pitcher; S. J. Jacquemin
Source:
Behavioral ecology and sociobiology 2013 v.67 no.5 pp. 747-756
ISSN:
0340-5443
Subject:
Cyprinidae; body size; dimorphism; females; fish; males; mating systems; models; phylogeny; spawning; sperm competition; testes
Abstract:
... Mating systems evolve with sexual size dimorphism (SSD) in many animals. Mating systems with males larger than females occur when males compete for female access or guard territories, while mating systems with group mating tend to occur in species where females are the same size or larger than males. In addition to variation in SSD with mating system, sperm competition varies among mating systems ...
DOI:
10.1007/s00265-013-1498-5