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Management of Barley Seedling Disease Caused by Sclerotium rolfsii Through Soil Amendment with Tricho-Compost
Issue:
Volume 7, Issue 1, June 2019
Pages:
1-7
Received:
13 February 2019
Accepted:
28 March 2019
Published:
23 May 2019
Abstract: The efficacy of formulated Trichoderma harzianum based Tricho-compost, seed treatment with Trichoderma spore suspension Trichoderma inocula and chemical fungicide Provax 200 WP were tested against seedling disease of barley caused by soil borne pathogen Sclerotium rolfsii in the research field of Plant Pathology Division, Bangladesh Agricultural Research Institute (BARI), Gazipur, Bangladesh during 2013-14, 2014-15 and 2015-16. Tricho-composts were prepared with mixed substrates of cow dung, rice bran and poultry refuse colonized by T. harzianum. The results exhibited that seedling mortality of barley was significantly reduced by the Tricho-compost, Trichoderma inocula and Provax 200 WP in all the years. The yield of barley was sharply increased over control due to the T. harzianum formulations and Provax 200 WP. Among the treatments, application of Tricho-compost was found more efficient in the reduction of seedling mortality and acceleration of plant growth with increased yield of barley under S. rolfsii inoculated field experiments in Bangladesh. Seed treatment with Provax 200 WP and Trichoderma inocula also showed promising in reduction of seedling mortality and increasing plant growth and yield of barley.
Abstract: The efficacy of formulated Trichoderma harzianum based Tricho-compost, seed treatment with Trichoderma spore suspension Trichoderma inocula and chemical fungicide Provax 200 WP were tested against seedling disease of barley caused by soil borne pathogen Sclerotium rolfsii in the research field of Plant Pathology Division, Bangladesh Agricultural Re...
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Verifying Faraday’s Magneto-optical Effect for Some Materials
Pooja Daggar,
Suram Singh Verma
Issue:
Volume 7, Issue 1, June 2019
Pages:
8-14
Received:
8 June 2019
Accepted:
9 July 2019
Published:
18 July 2019
Abstract: Magneto-optic effect is a phenomenon in which an electromagnetic wave propagates through a medium and gets affected by the presence of a quasistatic magnetic field. Verdet constant describes the strength of Faraday Effect for a particular material. The objective of this work was to measure the Verdet constant for different transparent materials. The Verdet constant is measured by using the Faraday Effect which is a magneto-optical phenomenon; mean it describes the rotation of the plane of polarization of light with in a medium when it is placed in an external magnetic field. So this experiment determines the rotation of the plane of polarization with respect to the wavelength and the magnetic field. The experiment was carried out with different materials like flint glass, potassium iodide, potassium bromide, olive oil, glycerin, normal water and salty water. Reading observed through this experiment depicts a linear relationship between the angle of rotation and the magnetic field. The Verdet constant is determined to be at constant laser wavelength λ = 632.8nm. This effect was demonstrated in olive oil and water and value of Verdet constant be V=16.18 radian/T-m and 24.68 radian/T-m respectively and also show optical activity for glycerin. However, no change was noticed for black glass and salty water.
Abstract: Magneto-optic effect is a phenomenon in which an electromagnetic wave propagates through a medium and gets affected by the presence of a quasistatic magnetic field. Verdet constant describes the strength of Faraday Effect for a particular material. The objective of this work was to measure the Verdet constant for different transparent materials. Th...
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Two Dimensional Grayscale Images of the Aspiny Neurons from the Human Neostriatum: Monofractal and Gray Level Co-occurrence Matrix Analysis
Velicko Vranes,
Bojana Krstonošić,
Nebojša Tomislav Milošević
Issue:
Volume 7, Issue 1, June 2019
Pages:
15-22
Received:
19 June 2019
Accepted:
23 July 2019
Published:
12 August 2019
Abstract: The striatum (neostriatum) is one of the principal constituents of the basal nuclei. It is a complex structure which consists of a dorsal and the ventral components. According to the spine distribution and their density, neurons of the human striatum can be classified into two main types: spiny and aspiny cells. Further classification recognizes two groups of spiny, and three groups of aspiny neurons. The goal of this study was to analyze different morphometric properties of the digital images of the group IV and group V aspiny neurons, from the dorsal striatum of both cerebral hemispheres. In this study, a total of 175 two-dimensional images of aspiny neurons were analyzed. Image reconstruction and measurement was performed with the specialized, public software Image J. Four parameters of standard fractal analysis were quantified from these binary images. In addition, five textural parameters were obtained by analyzing grayscale images of the entire neuron. Results of both analyses show that six of nine parameters differed between the group IV and group V aspiny neurons. Moreover, in both groups of neurons, one parameter of the fractal and three of the texture analyses differed between the putamen and the caudate nucleus neurons. Thus, this study corroborates previous classification of aspiny neurons. Although they belong to the same aspiny group, different type of cells can qualify nerve signals in their own way. Therefore, this study supports the hypothesis that neuronal morphology differences can reflect their functional diversity and their role in communication.
Abstract: The striatum (neostriatum) is one of the principal constituents of the basal nuclei. It is a complex structure which consists of a dorsal and the ventral components. According to the spine distribution and their density, neurons of the human striatum can be classified into two main types: spiny and aspiny cells. Further classification recognizes tw...
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Photoemission Spectra of Sound Tooth and Those of Different Carious Stages
Ali Abdel-Rahman Saeed Marouf,
Yathrib Awad Khairallah,
Elhadi Mohieldin Awooda
Issue:
Volume 7, Issue 1, June 2019
Pages:
23-26
Received:
22 May 2019
Accepted:
30 July 2019
Published:
20 August 2019
Abstract: Fluorescence, absorption, and excitation spectroscopy have been widely utilised as probes to collect basic information about physical, chemical, and biological processes. In this study nitrogen laser (N2) was used to induce emission in human teeth to distinguish between dental caries and sound teeth. Three samples of dental caries and one sample of sound teeth have been used to obtain fluorescence spectra illuminated with wavelengths of 337.1 nm, pulse energy 0.04 mJ and pulse time 100 nsec. The absorbance of dental caries and sound teeth was determined using UV-Vis spectrophotometer. The result showed an emission of broadband in the visible region from 363 nm to 627 nm; it provided an amount of information related to intrinsic fluorophores and allowed an accurate diagnosis by the use of the fluorescence intensity changes, it was observed significant decrease of the fluorescence signal intensity related to the carious stage in dental caries, while it was higher in the sound tooth spectrum indicates that the intensity is depending on the amount of decay. A definite diagnosis could be established based on the fluorescence intensity ratio. The future for laser induced fluorescence in diagnostic dentistry has been indicated as accurate and potentially applicable in a wide range in restorative dentistry, periodontology and endodontics.
Abstract: Fluorescence, absorption, and excitation spectroscopy have been widely utilised as probes to collect basic information about physical, chemical, and biological processes. In this study nitrogen laser (N2) was used to induce emission in human teeth to distinguish between dental caries and sound teeth. Three samples of dental caries and one sample of...
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