Journal•
The South Pacific Journal of Natural Science
About: The South Pacific Journal of Natural Science is an academic journal. The journal publishes majorly in the area(s): Electric power system & Germination. Over the lifetime, 20 publications have been published receiving 148 citations.
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TL;DR: In this paper, a review of taro biology, highlights the cultural and economic significance of Taro in Pacific Island countries and discusses the progress made towards the molecular breeding of this important crop to date.
Abstract: Taro (Colocasia esculenta L. Schott) is an important crop worldwide but is of particular significance in many Pacific Island countries where it forms part of the staple diet and serves as an export commodity. Escalating pest and disease problems are jeopardizing taro production with serious implications to food security and trade. Biotechnological approaches to addressing pest and disease problems, such as somatic embryogenesis and transgenesis, are potentially viable options. However, despite biotechnological advancements in higher profile agronomic crops, such progress in relation to Colocasia esculenta var. esculenta has been slow. This paper reviews taro biology, highlights the cultural and economic significance of taro in Pacific Island countries and discusses the progress made towards the molecular breeding of this important crop to date.
32 citations
TL;DR: The effects of voltage variation and unbalance on the performance of an induction motor driven centrifugal pump with a case study is presented.
Abstract: Availability of quality power has become an important issue for industrial utilities due to frequent performance variations in process industries. Increase in the generating capacity has not kept up pace of power demand, which results into shortage of power supply and power system network is normally subjected to varying and unequal loads across the three phases. Continuous variation of single-phase loads on the power system network leads to voltage variation and unbalance, most importantly; the three-phase voltages tend to become asymmetrical in nature. Application of asymmetrical voltages to induction motor driven systems severely affects its working performance. This paper presents the effects of voltage variation and unbalance on the performance of an induction motor driven centrifugal pump with a case study.
21 citations
TL;DR: Crude oil degrading fungal strain Aspergillus niger was isolated from contaminated soil near crude oil production well (Lingala) Andhra Pradesh and the rate of reduction in some petroleum hy drocarbon fractions, such as n-alkanes, aromatics, nitrogen, sulfur and oxygen (NSO)-containing compounds and polycycli c aromatic hydrocarbons (PAHs), were monitored by gas chromatography.
Abstract: Hydrocarbon degrading microorganisms play a major r ole in the environment. In the present study crude oil degrading fungal strain Aspergillus niger was isolated from o il contaminated soil near crude oil production well (Lingala) Andhra Pradesh. The rate of reduction in some petroleum hy drocarbon fractions, such as n-alkanes, aromatics, nitrogen, sulfur and oxygen (NSO)-containing compounds and polycycli c aromatic hydrocarbons (PAHs), were monitored by m eans of gas chromatography. The nC 17/Pristine and n C18/Phytane ratios, extrapolated from the GC profiles decreased from the initial value of 2.510 and 7.289 to 0.132 and 0.474 respect ively at day 60.
18 citations
TL;DR: Crude extracts of kava showed good activity against ovarian tumour and leukaemia cancer cell lines and the structure of the compounds were elucidated by spectroscopic techniques and by comparison with data in the literature.
Abstract: Crude extracts of kava (Piper methysticum G. Forster, Piperaceae) showed good activity against ovarian tumour and leukaemia cancer cell lines. Bioassay-guided isolation resulted in the isolation of six known kava lactones and two flavokavains. The structure of the compounds were elucidated by spectroscopic techniques and by comparison with data in the literature.
15 citations
TL;DR: In this article, the aerial parts of three species of basil, Ocimum basilicum, O. tacilium and O. canum were subjected to exhaustive hydrodistillation to afford pale yellow coloured oils in 1.0, 0.7 and 0.01 percent yields respectively.
Abstract: Fresh aerial parts of three species of basil, Ocimum basilicum, O. tacilium and O. canum were subjected to exhaustive hydrodistillation to afford pale yellow coloured oils in 1.0, 0.7 and 0.01 percent yields respectively. Detailed chemical evaluation by GC and GC/MS revealed O. basilicum to be composed of a total of eleven components representing 100 percent of the total oil composition. Neral (36.1 %) and geranial (44.5 %) were found to be the major components. Ocimum tacilium was found to be composed of five components representing 99.8 % of the total oil composition with estragole (96.6 %) being the major component. Five components were observed in O. canum, representing 72.3 percent of the total oil composition with eugenol (35.3 %) and linalool (27.2 %) as the major components. The high citral (neral + geranial) content in O. basilicum suggests that it belong to the citral chemotype while O. tacilium belong to the estragole chemotype and O. canum belong to the eugenol chemotype.
11 citations