The electron-donor properties of Sm2O3 activated at 300, 500, and 800°C are reported from studies on the adsorption of electron acceptors of various electron affinities (electron affinity values in eV are given in parentheses): 7,7,8,8-tetracyanoquino-dimethane (2.84), 2,3,5,6-tetrachloro-1,4-benzoquinone (2.40), p-dinitrobenzene (1.77), and m-dinitrobenzene (1.26) in acetonitrile and 1,4-dioxane. The extent of electron transfer during the adsorption was determined from magnetic measurements. The acid-base properties of Sm2O3 at different activation temperatures are reported using a set of Hammett indicators. Electron donor-acceptor interactions at interfaces are important in elucidating the adhesion forces.
Sugunan, S; Jalaja, J M(Indian Journal of Chemistry, March , 1995)
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Abstract:
The electron donating properties of Ce02 and its mixed
oxides with alumina have been determined from the studies
of adsorption of electron acceptors of various electron
affinities on the surface of these oxides. The catalytic
activity of these oxides towards some reactions such as
oxidation of alcohols and reduction of ketones have been
Correlated with their surface electrondonor properties. The
surface acidity/basicity of these oxides have also been
determined by titration method using a set of Hammett
indicators.
The catalytic activity of Perovskite-type mixed oxides (LaCo03 . PrCo03 and SmCo03 ) for the
reduction of cyclohexanone to cyclohexanol with 2-propanol (Meerwein-Ponndorf-Verley reduction)
has been studied. The data have been correlated with the surface electron donor properties
of these mixed oxides.
Sugunan, S; Devika Rani, G(Indian Journal of Chemistry, November , 1993)
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Abstract:
The adsorption of electron acceptors, viz.,7,7,8,8-tetracyanoquinodimethane(TCNQ), 2,3,5,6-tetrachloro-p-
benzoquinone (chloranil) and p-dinitrobenzene
(PDNB) on the surface of three rare earth oxides Y2O3,
Nd203 and Pr6O11 has been studied in acetonitrile and
dioxan. From the radical concentration on the surface
determined using ESR spectral data, the electron donor
strength of the rare earth oxides are reported.
Suresh, Vettoor V; Nandakumaran, V M(World Scientific Publishing Company, 1990)
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Abstract:
Electron-phonon interaction is considered within the framework of the fluctuating
valence of Cu atoms. Anderson's lattice Hamiltonian is suitably modified to take this into
account. Using Green's function technique tbe possible quasiparticle excitations' are
determined. The quantity 2delta k(O)/ kB Tc is calculated for Tc= 40 K. The calculated values
are in good agreement with the experimental results.
Jayan,Thomas; Sivasankara Pillai,V N(Department of Applied Chemistry,Faculty of Science, 1995)
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Abstract:
The thesis deals with the preparation of chemical, optical, thermal and electrical characterization of five compounds, namely metal free naphthalocyanine, vanadyl napthalocyanine, zinc naphlocyanine, europium dinaphthalocyanine, and europium diphthalocyanine in the pristine and iodine-doped forms. Two important technological properties of these compounds have been investigated. The electrical properties are important in applications sensors and semiconductor lasers. Opto-thermal properties assume significance for optical imaging and data recording. The electrical properties were investigated by dc and ac techniques. This work has revealed some novel information on the conduction mechanism in five macrocyclic compounds and their iodine-doped forms. Also useful data on the thermal diffusivity of the target compounds have been obtained by optical techniques.
Narayanan, P; Dr.Sivasankara Pillai, V N(Cochin University of Science and Technology, September , 1992)
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Abstract:
Metal phthalocyanines have some unique optical
properties which are exploited for dyeing fibers and films
used in applicationslike dye lasing and optical information
storage. Aggregation of dye molecules modifies their
absorption and emission spectra with concomitant
degradation in their energy transfer characteristics. MPcs
as such have poor processability and are seldom used in
solid matrices. The finest energy transfer characteristics
are shown by the monomers of metal phthalocyanines. In the
third chapter of this thesis the studies on two series of
metal phthalocyanines are repoted
Description:
Department of Applied Chemistry, Cochin University of Science And Technology
Victor Anandkumar, S; Dr.Francis,C A(Cochin University of Science and Technology., November , 2007)
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Abstract:
Information and Communication Technologies (ICTs) have a dramatic
impact on the tourism industry because they force this sector as a whole to
rethink the way in which it organises its business . In
the light of such rethinking within the tourism industry, this study has
focussed on the Small and Medium Tourism Enterprises (SMTEs) in two
island destinations, namely Mauritius and Andaman Islands, India.Suggestions. The findings
conceming SMTEs in Mauritius and Andaman Islands have been compared
to make some destination-specific inferences. The relevance of the findings
has been discussed with reference to the SMTEs in the two destinations as
well as the possible acceptability in other comparable settings. Suggestions
have been made for further research in SMTEs’ use of the Internet for
marketing function.
Description:
School of Management Studies, Cochin
University of Science and Technology.
Harilal, S S; Issac, Riju C; Bindhu, C V; Nampoori, V P N; Vallabhan, C P G(American Institute of Physics, April , 1997)
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Abstract:
The emission features of laser ablated graphite plume generated in a helium ambient atmosphere have been investigated with time and space resolved plasma diagnostic technique. Time resolved optical emission spectroscopy is employed to reveal the velocity distribution of different species ejected during ablation. At lower values of laser fluences only a slowly propagating component of C2 is seen. At high fluences emission from C2 shows a twin peak distribution in time. The formation of an emission peak with diminished time delay giving an energetic peak at higher laser fluences is attributed to many body recombination. It is also observed that these double peaks get modified into triple peak time of flight distribution at distances greater than 16 mm from the target. The occurrence of multiple peaks in the C2 emission is mainly due to the delays caused from the different formation mechanism of C2 species. The velocity distribution of the faster peak exhibits an oscillating character with distance from the target surface.
Shaji, Varghese; Dr. James, Manalel(Cochin University of Science and Technology, April 13, 2005)
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Abstract:
Emotional intelligence is very important in organisations and the ability to manage feelings and handle stress is an important aspect of El. Even though a number of studies have been done to prove that E1 is related to organisationally relevant variables like leadership effectiveness, job satisfaction, performance, career success etc., and the theoretical grounding for emotional intelligence-stress-relationship seems sound, only a few studies have been done to establish this linkage. This study is an attempt to measure emotional intelligence and organisational role stress of managers working in industrial organisations and to examine the relationship between Emotional Intelligence and Organisational Role Stress. It also attempts to explore the influence of personal and occupational variables viz., age, education, gender, marital status, experience, department, type of organisation and designation on emotional intelligence. The investigator has also examined the difference in the level of role stress experienced by junior, middle and senior-level managers. The main objective of the study is to examine the relationship between emotional intelligence and organisational role stress.
Description:
School of Management Studies, Cochin University of Science and Technology
Successful management is dependent heavily on the manager’s ability to handle conflict
effectively. The workforce has been increasingly becoming diversified vis-à-vis the gender,
culture and ethnicity. The present work environment has in itself contributed to sowing seeds of
conflict with greater diversity, hostility, complexity and newer business competencies in the
work context.The classic study of Mintzberg’s Managerial roles approach (1973) also says that a
manager has to spend sufficient time and energy in solving conflict as he has to take roles as a
negotiator, and dispute handler. An understanding of the conflict and role that it plays in
influencing employee behavior constructively or destructively is immense. Therefore conflict
when left unmanaged can lead to diminished cohesiveness amongst employees, productivity and
reduced organizational fitness. To manage conflict effective conflict resolution strategies that
have constructive outcomes is called for. Conflict resolution style theorists opine that
collaborative or integrative style, where there is high concern for task and people is considered to
give positive individual and organizational outcomes, while the withdrawing /avoidance style
and forcing / dominating style are considered to be ineffective in managing conflict. Though
managers have typical preferences in the styles followed it need not necessarily be the typical
response as it depends on the context, power relationships, emotions etc. The adoption of conflict
styles of managers however is dependent on variables like gender orientation, cultural values,
personality orientation, underlying relationships – public/private.
The paper attempts to draw the importance of managing conflicts at workplace positively and the
need for effective conflict resolution strategies. The conflict style adopted and the variables that
affect the adoption of each style are discussed and possible interventions at the workplace are
suggested
Description:
International Journal of Social Science & Interdisciplinary Research,
Vol.2 (2), FEBRUARY (2013