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THE DYNAMICS AND COMPARISON OF TRANSPOSABLE ELEMENTS FROM CRYPTIC PLANT SPECIES
Nazeema.T.H,Manoah Martin.I
International Research Journal of Pharmacy , 2013,
Abstract: The purpose of the study was to evaluate the possible genetic variation occurred due to the action of transposons. Hibiscus rosasinensis was selected for the study as it had the transposable elements similar to the one found in maize, which can be useful for the differentiation of colors in this plant. In this study an attempt was made to identify the transposable elements and to study the dynamics of the cryptic plant species. The plant DNA was successfully extracted and run with 0.8% Agarose gel electrophoresis. After isolation of DNA specific transposable element primers were used to amplify the 300bp of fragment. These fragments were subjected to RAPD which identified the transposon sequence (106bp) named as En/Spm. These fragments represent ribulose 1, 5-bisphosphate carboxylase large subunit (rbcL) gene which were confirmed with NCBI-BLAST. The sequences were initially aligned with Clustal-X software. Based on this alignment, 224bp of sequence were used to construct phylogenetic tree. Hence, the relationship shows that Hibiscus rosasinasesis (Brown) and Hibiscus rosasinensis (Pink) are closely related, but the Hibiscus rosasinasesis (Red) is distantly related. The same results were shown in RAPD technique when the transposable element sequence was compared with RAPD marker. It can be concluded that the Hibiscus rosasinensis plant has more than 80% of transposons which was responsible for the color changes.
Antihepatotoxic and antioxidant defense potential of Mimosapudica
Nazeema T.H.,Brindha V.
International Journal of Drug Discovery , 2009,
Abstract: Reactive Oxygen species (ROS) are believed to be responsible for pathogenesis of variousdiseases affecting tissues and the main organ, the Liver. Hence, in the present study, the extent of LipidPeroxidation (LPO) and ROS elimination and its defense mechanisms by the enzymic & non enzymicantioxidants in liver & serum was investigated. Hepatoxicity was manifested by significantly decreased(p<0.05) levels in the activities of the enzymic antioxidants such as Superoxide dismutase (SOD) Catalase(CAT), Glutathione peroxidase and the non enzymic antioxidants such as glutathione & Vitamin C in ratsinduced hepatic damage by ethanol Simultaneous administration of the leaf extract Mimosa pudica alongwith the toxin ethanol in rats showed a considerable protection against the toxin induced oxidative stressand liver damage as evidence by a significant increase (p<0.05) in antioxidant activities. The study revealsthat the co administration of Mimosa pudica aqueous extract significantly lowered the level of lipidperoxidation in alcohol fed mice.
The Indonesian Experience with Two Big Economic Crises  [PDF]
Tulus T. H. Tambunan
Modern Economy (ME) , 2010, DOI: 10.4236/me.2010.13018
Abstract: This paper aims to examine the Indonesian experience with two big economic crises in the past 12 years, namely the 1997/98 Asian financial crisis and the 2008/09 global economic crisis. The paper is based on secondary data analysis and a review of key literature. It has two main parts. The first part gives a theoretical explanation of the main transmission channels through which the two crises have affected the Indonesian economy. The second part is the empirical part of the paper about the impacts of the crises on such as economic growth, employment, remittances and poverty in Indonesia. One important finding from this study is that the Indonesian economy was much more resilience to the last crisis as compared to the 1997/98 crisis. During this first crisis, Indonesian economic growth was–13 percent and poverty increased significantly; whereas during the second one, Indonesia managed to keep a positive economic growth rate (though declined), and poverty kept declining.
Synthesis, Growth and Material Characterization of Bis L-Alanine Triethanol Amine (BLATEA) Single Crystals Grown by Slow Evaporation Technique  [PDF]
T. Vela, P. Selvarajan, T. H. Freeda
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2011, DOI: 10.4236/jmmce.2011.1010074
Abstract: Bis L-alanine Triethanol amine (BLATEA) salt was synthesized by solution method and it was subjected to solubility studies. Using the solubility data, the saturated solution of the synthesized salt was prepared and single crystals of Bis L-alanine Triethanol amine (BLATEA) were grown from aqueous solution by slow evaporation technique. X-ray diffraction (XRD) study was carried out to confirm the crystal structure. FTIR study reveals the functional groups of the sample. UV-Visible transmittance and absorption spectra were recorded for the sample to analyze the transparency of the grown crystal. Vickers micro hardness values were measured for the sample and from the microhardness study it is observed that BLATEA crystal is a soft material. SHG generation study was carried out to confirm the NLO activity of grown sample and also BLATEA crystal has been analyzed with dielectric measurements
Applying Score Reliability Fusion to Bi-Model Emotional Speaker Recognition  [PDF]
H. B. Zhang, T. Wang, T. Huang, X. Yang
Journal of Signal and Information Processing (JSIP) , 2013, DOI: 10.4236/jsip.2013.43B001
Abstract:

Emotion mismatch between training and testing is one of the important factors causing the performance degradation of speaker recognition system. In our previous work, a bi-model emotion speaker recognition (BESR) method based on virtual HD (High Different from neutral, with large pitch offset) speech synthesizing was proposed to deal with this problem. It enhanced the system performance under mismatch emotion states in MASC, while still suffering the system risk introduced by fusing the scores from the unreliable VHD model and the neutral model with equal weight. In this paper, we propose a new BESR method based on score reliability fusion. Two strategies, by utilizing identification rate and scores average relative loss difference, are presented to estimate the weights for the two group scores. The results on both MASC and EPST shows that by using the weights generated by the two strategies, the BESR method achieve a better performance than that by using the equal weight, and the better one even achieves a result comparable to that by using the best weights selected by exhaustive strategy.

X-Raying Rainfall Pattern and Variability in Northeastern Nigeria: Impacts on Access to Water Supply  [PDF]
H. T. Ishaku, M. Rafee Majid
Journal of Water Resource and Protection (JWARP) , 2010, DOI: 10.4236/jwarp.2010.211113
Abstract: This paper is premised on the hypothesis that the amount of rainfall in Nigeria decreases with increasing distance from the coastal areas to the north semi arid lands. This belief widely held in some circles does not really follow this pattern due to other climatic factors. This paper examined rainfall pattern and its variability in northeastern Nigeria and its impacts on access to water supply. Data on the mean monthly rainfall over a period of 33 years (1970-2002) were collected from the Nigeria Meteorological Agency (NIMET) in Abuja, Nigeria. The result of the analysis indicates that the mean annual rainfall in the study area is not dependent on distance but some other climatic factors such as relief, solar radiation, temperature, winds, and nature of soil among others. Thus, the amount of rainfall received in Taraba and Borno states which are located in the southern most and extreme end of the study area respectively were higher than that of Gombe state which lies in between them.
Sampling and Reconstruction of Zero-Order Hold Signals by Parallel RC Filters  [PDF]
J.T Olkkonen, H Olkkonen
Wireless Engineering and Technology (WET) , 2011, DOI: 10.4236/wet.2011.23022
Abstract: In this work we describe a reconstruction algorithm for zero-order hold (ZOH) waveforms measured by a parallel sam-pling scheme. In the method the ZOH signal is fed to a parallel network consisting of resistor-capacitor (RC) filters, whose outputs are sampled simultaneously. The algorithm reconstructs N previous samples of the input signal from output samples of N parallel RC circuits. The method is especially useful in sampling and reconstruction of the ZOH signals produced by the digital-to-analog converters. Using the parallel sampling method the sampling rate of the analog-to-digital converters can be increased by a factor of N. We discuss a variety of applications such as reconstruction of ZOH pulse sequences produced by ultra wide band (UWB) transmitters.
Thermal and structural studies of poly (vinyl alcohol) and hydroxypropyl cellulose blends  [PDF]
Osiris W. Guirguis, Manal T. H. Moselhey
Natural Science (NS) , 2012, DOI: 10.4236/ns.2012.41009
Abstract: Polymers and polymeric composites have steadily reflected their importance in our daily life. Blending poly(vinyl alcohol) (PVA) with a potentially useful natural biopolymers such as hydroxypropyl cellulose (HPC) seems to be an interesting way of preparing a polymeric blends. In the present work, blends of PVA/HPC of compositions (100/0, 90/10, 75/25, 50/50, 25/75, and 0/100 wt/wt%) were prepared to be used as bioequivalent materials. Thermal analyses [differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA)], and X-ray diffraction (XRD) were employed to characterize and reveal the miscibility map and the structural properties of such blend system. The obtained results of the thermal analyses showed variations in the glass transition temperature (Tg) indicating the miscibility of the blend systems. Moreover, the changes in the melting temperature (Tm), shape and area were attributed to the different degrees of crystallinity and the existence of polymer-polymer interactions between PVA and HPC molecules. The X-ray diffraction (XRD) analysis showed broadening and sharpening of peaks at different HPC concentrations with PVA. This indicated changes in the crystallinity/amorphosity ratio, and also suggested that the miscibility between the amorphous components of homo-polymers PVA and HPC is possible. The results showed that HPC doped in PVA film can improve the thermal stability of the film under investigation, leading to interesting technological applications.
Optical, Photophysical, Stability and Mirrorless Lasing Properties of Novel Fluorescein Derivative Dye in Solution  [PDF]
Maram T. H. Abou-Kana
Open Journal of Applied Sciences (OJAppS) , 2012, DOI: 10.4236/ojapps.2012.24034
Abstract: Novel laser dye, allyl 2-(6-(allyloxy)-3-oxo-3H-xanthen-9-yl) benzoate [diallyl-fluorescein] has been synthesized. Its chemical structure was confirmed by 1HNMR, IR, MS and elemental analysis. Its optical properties were experimentally investigated. The amplified spontaneous emission (ASE) efficiency was 0.29% in case of new dye while it was 0.23% in case of fluorescein by pumping the dye samples with a 532 nm (7 ns) pulsed Nd:YAG laser. Also, the thermal and photostability techniques confirmed the higher stability of new laser dye.
New Methods to Quantify Canopy Structure of Leafless Boreal Birch Forest from Hemispherical Photographs  [PDF]
T. D. Reid, R. L. H. Essery
Open Journal of Forestry (OJF) , 2013, DOI: 10.4236/ojf.2013.32012
Abstract:

Hemispherical photography has been used for many years to measure the physical characteristics of forests, but most related image processing work has focused on leafy canopies or conifers. The boreal forest contains large areas of deciduous trees that remain leafless for over half the year, influencing surface albedo and snow dynamics. Hemispherical photographs of these sparse, twiggy canopies are difficult to acquire and analyze due to bright bark and reflections from snow. This Note presents new methods for producing binary images from hemispherical photographs of a leafless boreal birch forest. Firstly, a thresholding method based on differences between colour panes provides a quick way to remove bright sunlit patches on vegetation. Secondly, an algorithm for joining up fragmented pieces of tree after thresholding ensures a continuous canopy. These methods reduce the estimated hemispherical sky view fraction by up to 6% and 3%, respectively. Although the processing remains subjective to some degree, these tools help to standardize analysis and allow the use of some photographs that might have previously been considered unsuitable for scientific purposes.

 

 

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