Mohammed Yusuff, K K; Varsha, Gopalakrishnan; Arun, Vasudevan; Robinson, P P; Manju, Sebastian; Digna, Varghese; Leeju, P; Jayachandran, V P(Elesvier,Tetrahedron Letters (2010), February 15, 2010)
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Abstract:
An efficient one-pot synthesis of two new heterocyclic perimidines 4-(2,3-dihydro-1H-perimidin-2-yl)-2-methoxyphenol and
2-(quinoxalin-2-yl)-2,3-dihydro-1H-perimidine in good yields is presented. This methodology provides a simple, straightforward synthetic
route to these interesting classes of heterocycles. Crystal structure, solvatochromism and antibacterial activity of these organic compounds
are discussed.
Ram Mohan, H S; Subash, N; Sikka, A K(Springer, 2010)
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Abstract:
Mann–Kendall non-parametric test was employed for observational trend detection of monthly, seasonal and
annual precipitation of five meteorological subdivisions of
Central Northeast India (CNE India) for different 30-year
normal periods (NP) viz. 1889–1918 (NP1), 1919–1948
(NP2), 1949–1978 (NP3) and 1979–2008 (NP4). The trends
of maximum and minimum temperatures were also investigated.
The slopes of the trend lines were determined using the
method of least square linear fitting. An application of Morelet
wavelet analysis was done with monthly rainfall during June–
September, total rainfall during monsoon season and annual
rainfall to know the periodicity and to test the significance of
periodicity using the power spectrum method. The inferences
figure out from the analyses will be helpful to the policy
managers, planners and agricultural scientists to work out
irrigation and water management options under various
possible climatic eventualities for the region. The long-term
(1889–2008) mean annual rainfall of CNE India is
1,195.1 mm with a standard deviation of 134.1 mm and coefficient of variation of 11%. There is a significant decreasing
trend of 4.6 mm/year for Jharkhand and 3.2 mm/day for CNE
India. Since rice crop is the important kharif crop (May–
October) in this region, the decreasing trend of rainfall during
themonth of July may delay/affect the transplanting/vegetative
phase of the crop, and assured irrigation is very much needed
to tackle the drought situation. During themonth of December,
all the meteorological subdivisions except Jharkhand show a
significant decreasing trend of rainfall during recent normal
period NP4. The decrease of rainfall during December may
hamper sowing of wheat, which is the important rabi crop
(November–March) in most parts of this region. Maximum
temperature shows significant rising trend of 0.008°C/year (at
0.01 level) during monsoon season and 0.014°C/year (at 0.01
level) during post-monsoon season during the period 1914–
2003. The annual maximum temperature also shows significant
increasing trend of 0.008°C/year (at 0.01 level) during
the same period. Minimum temperature shows significant
rising trend of 0.012°C/year (at 0.01 level) during postmonsoon
season and significant falling trend of 0.002°C/year
(at 0.05 level) during monsoon season. A significant 4–
8 years peak periodicity band has been noticed during
September over Western UP, and 30–34 years periodicity
has been observed during July over Bihar subdivision.
However, as far as CNE India is concerned, no significant
periodicity has been noticed in any of the time series.
Sindhu, Issac; Dr.Girish Kumar, K(Cochin University of Science & Technology, February , 2011)
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Abstract:
Voltammetric sensors are an important class of electrochemical sensors in which the analytical information is obtained from the measurement of current obtained as a result of electrochemical oxidation/reduction.This current is proportional to the concentration of the analyte.Chemically modified electrodes(CMEs) have great significance as important analytical tools for the electrochemical determination of pharmaceuticals.The modification of electrode results in efficient determination of electro-active biomolecules at very lower potential without its major interferences.The operation mechanism of CMEs depends on the properties of the modifier materials that are used to promote selectivity towards the target analytes.Modified electrodes can be prepared by deposition of various compounds such as organic compounds ,conducting polymers,metal oxides,etc. on the various electrode surfaces.The thesis presents the development ,electrochemical characterization and analytical application studies of eight voltammetric sensors developed for six drugs viz.,Ambroxol,Sulfamethoxazole,PAM Chloride, Lamivudine,Metronidazole and Nimesulide.The modification techniques adopted as part of the present work include Multiwalled Carbon Nanotube(MWCNT) based modification.Electropolymerisation and Gold Nanoparticle (AuNP) based modifications.
Description:
Dept.of Applied Chemistry,Cochin University of Science & Technology
Unnikrishnan Kartha, N R; Dr. Jagathy Raj, V P(Cochin University of Science & Technology, January , 2010)
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Abstract:
The research work which was carried out to study the impact of
ISO 9001: 2000, in selected organisations in Kerala, spread over various types
of activities, such as fabrication of aero space hardware, glass ware,
construction industries, health care units etc, encompassing, government and
private enterprises, public sector undertakings, small and medium scale
industries and research and development establishments. The ambience, work
culture and collaboration prevalent in these organisations were varying on
account of the environment in which they have been working. Fifty percent of
the organizations selected for the study had obtained the
ISO 900 I: 2000-certification since seven years or more. The process of study
undertaken could invoke interest in the respondents, when a brief explanation
on the purpose and need of the study was given to them prior to conducting the
survey. There has been total cooperation from the management and the
employees of all the organisations for the conduct of the study. Personal
discussions were held with the senior management to draw their total support
and involvement for the study.
Description:
School of Management Studies, Cochin
University of Science and Technology