Supercapacitive performance of highly dispersed bismuth sulfide nanoparticles in organic matrix: The role of sulphur source

Organizations increasingly rely on virtual teams to access geographically dispersed expertise. Yet, team dispersion introduces challenges to team communication that may negatively influence team performance. Using a sample of 53 innovation teams representing a variety of geographic dispersion configurations from completely collocated to highly dispersed, we examined the moderating role of transformational leadership on the relationship between team dispersion, team communication, and team performance. Our findings suggest that while transformational leadership is effective in reducing the negative effects of dispersion in collocated teams or ones with low levels of geographic dispersion, it is less effective helping improve the performance of highly dispersed teams. This effect may be due to a transformational leader’s difficulty in facilitating team communication in highly dispersed teams, where his or her influence might actually have counterproductive effects. We discuss the implications of our findings for theory, future research, and practice.

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Role of the Organic Matrix in the Biopolymer-Mediated Synthesis of Platelike YBCO

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.699.268 ◽

2013 ◽

Vol 699 ◽

pp. 268-272 ◽

Cited By ~ 2

Author(s):

Zi Li Zhang ◽

Stuart C. Wimbush ◽

Ahmed Kursumovic ◽

Hong Li Suo ◽

Judith L. MacManus Driscoll

Keyword(s):

Organic Matrix ◽

Molecular Structures ◽

Biomimetic Synthesis ◽

Synthesis Process ◽

Final Size ◽

Whole Process ◽

Structural And Electrical Properties ◽

Organic Matrices ◽

Superconducting Ceramic

The biomimetic method of achieving dense platelike grain growth of the high temperature superconducting ceramic YBa2Cu3O7 (YBCO) has been studied. By using various organic matrices (dextran and chitosan) having different molecular structures, the final size and arrangement of the platelike YBCO grains exhibit significant differences, possible reasons for which are discussed. The different organic matrices used also indirectly affect the superconducting properties of the YBCO formed. By elucidating the role of the organic matrix in the biomimetic synthesis process in this way, the whole process could be controlled more precisely, leading to structural and electrical properties of the final product more desireable for specific applications.

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The role of chitin-rich skeletal organic matrix on the crystallization of calcium carbonate in the crustose coralline alga Leptophytum foecundum

Scientific Reports ◽

10.1038/s41598-019-47785-2 ◽

2019 ◽

Vol 9 (1) ◽

Cited By ~ 5

Author(s):

M. Azizur Rahman ◽

Jochen Halfar ◽

Walter H. Adey ◽

Merinda Nash ◽

Carlos Paulo ◽

...

Keyword(s):

Calcium Carbonate ◽

Organic Matrix ◽

Crustose Coralline Alga ◽

Coralline Alga

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Characterization of the main steps in first shell formation in Mytilus galloprovincialis : possible role of tyrosinase

Proceedings of The Royal Society B Biological Sciences ◽

10.1098/rspb.2019.2043 ◽

2019 ◽

Vol 286 (1916) ◽

pp. 20192043 ◽

Cited By ~ 4

Author(s):

A. Miglioli ◽

R. Dumollard ◽

T. Balbi ◽

L. Besnardeau ◽

L. Canesi

Keyword(s):

Time Course ◽

Mytilus Galloprovincialis ◽

Enzyme Inhibitor ◽

Organic Matrix ◽

Mrna Levels ◽

Shell Formation ◽

Larval Stages ◽

Matrix Deposition ◽

Shell Matrix

Bivalve biomineralization is a highly complex and organized process, involving several molecular components identified in adults and larval stages. However, information is still scarce on the ontogeny of the organic matrix before calcification occurs. In this work, first shell formation was investigated in the mussel Mytilus galloprovincialis . The time course of organic matrix and CaCO 3 deposition were followed at close times post fertilization (24, 26, 29, 32, 48 h) by calcofluor and calcein staining, respectively. Both components showed an exponential trend in growth, with a delay between organic matrix and CaCO 3 deposition. mRNA levels of genes involved in matrix deposition (chitin synthase; tyrosinase- TYR) and calcification (carbonic anhydrase; extrapallial protein) were quantified by qPCR at 24 and 48 hours post fertilization (hpf) with respect to eggs. All transcripts were upregulated across early development, with TYR showing highest mRNA levels from 24 hpf. TYR transcripts were closely associated with matrix deposition as shown by in situ hybridization. The involvement of tyrosinase activity was supported by data obtained with the enzyme inhibitor N-phenylthiourea. Our results underline the pivotal role of shell matrix in driving first CaCO 3 deposition and the importance of tyrosinase in the formation of the first shell in M. galloprovincialis .

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The role of an organic matrix during the formation of siliceous scales in the heliozoon Actinophrys sol (actinophryida, protista)

European Journal of Protistology ◽

10.1016/s0932-4739(11)80375-5 ◽

1993 ◽

Vol 29 (3) ◽

pp. 334-343

Author(s):

P. Jane Newman ◽

David J. Patterson

Keyword(s):

Organic Matrix ◽

Actinophrys Sol

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The Role of Proteins in Biosilicification

Scientifica ◽

10.6064/2012/867562 ◽

2012 ◽

Vol 2012 ◽

pp. 1-22 ◽

Cited By ~ 28

Author(s):

Daniel Otzen

Keyword(s):

Self Assembly ◽

Organic Matrix ◽

Specific Protein ◽

Colloidal Systems ◽

Protein Properties ◽

Modified Peptides ◽

Fundamental Biology ◽

Living Organisms ◽

Insight Into

Although the use of silicon dioxide (silica) as a constituent of living organisms is mainly restricted to diatoms and sponges, the ways in which this process is controlled by nature continue to inspire and fascinate. Both diatoms and sponges carry out biosilificiation using an organic matrix but they adopt very different strategies. Diatoms use small and heavily modified peptides called silaffins, where the most characteristic feature is a modulation of charge by attaching long chain polyamines (LCPAs) to lysine groups. Free LCPAs can also cooperate with silaffins. Sponges use the enzyme silicatein which is homologous to the cysteine protease cathepsin. Both classes of proteins form higher-order structures which act both as structural templates and mechanistic catalysts for the polycondensation reaction. In both cases, additional proteins are continuously being discovered which modulate the process further. This paper concentrates on the role of these proteins in the biosilification process as well as in various applications, highlighting areas where focus on specific protein properties may provide further insight. The field of biosilification is a crossroads of different disciplines, where insight into the energetics and mechanisms of molecular self-assembly combine with fundamental biology, complex multicomponent colloidal systems, and an impressive array of potential technological applications.

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