271 research outputs found
Sequence-specific amplified polymorphism (ssap) technique to analyse Fusarium oxysporum f. sp. lactucae vcg 0300 isolate from lettuce
No full textA sequence-specific amplified polymorphism (SSAP) technique was developed to study the clonality of Fusarium oxysporum f.sp. lactucae VCG 0300 which causes Fusarium wilt of lettuce. Specific primers designed from two known long terminal repeats (LTRs) of the F. oxysporum genome were coupled with MseI AFLP-derived primers to investigate the level of polymorphism in 80 isolates of F. oxysporum obtained from different locations worldwide. The technique proved to be reliable, efficient and able to discriminate among F. oxysporum f.sp. lactucae race 1 strains and a single strain of race 2. Polymorphisms within Italian and US race 1 isolates were detected but no relation was found between genetic variability and geographic distribution of strains. The technique confirmed the worldwide clonality of VCG 0300 race 1. In addition, the present study revealed that the SSAP technique can be used for reliable strain discrimination and as a tool to investigate transposition behaviour of retroelements in the genome of the pathogen
Finite-Time Passivity-Based Stability Criteria for Delayed Discrete-Time Neural Networks via New Weighted Summation Inequalities
No full textIn this paper, we study the problem of finite-time stability and passivity criteria for discrete-time neural networks (DNNs) with variable delays. The main objective is how to effectively evaluate the finite-time passivity conditions for NNs. To achieve this, some new weighted summation inequalities are proposed for application to a finite-sum term appearing in the forward difference of a novel Lyapunov-Krasovskii functional, which helps to ensure that the considered delayed DNN is passive. The derived passivity criteria are presented in terms of linear matrix inequalities. A numerical example is given to illustrate the effectiveness of the proposed results
FIGURE 4. Lernaeenicus hemirhamphi Kirtisinghe, 1932 in The genus Lernaeenicus Lesueur (Copepoda, Siphonostomatoida, Pennellidae) in India: a checklist with notes on its taxonomy and ecology
No full textFIGURE 4. Lernaeenicus hemirhamphi Kirtisinghe, 1932 infecting three different hosts: (A) Hemiramphus far (Forsskål, 1775); (B) H. lutkei Valenciennes in Cuvier & Valenciennes, 1847a; (C) Euleptorhamphus viridis (van Hasselt, 1823b). Lernaeenicus hemirhamphi: (D) head, dorsal; (E) head, ventral; (F) trunk, hind end.Published as part of Raja, Kuzhanthaivel, Saravanakumar, Ayyapan, Gopalakrishnan, Ayyaru, Vijayakumar, Ramalingam, Hwang, Ui Wook & Maran, Balu Alagar Venmathi, 2016, The genus Lernaeenicus Lesueur (Copepoda, Siphonostomatoida, Pennellidae) in India: a checklist with notes on its taxonomy and ecology, pp. 192-211 in Zootaxa 4174 (1) on page 196, DOI: 10.11646/zootaxa.4174.1.14, http://zenodo.org/record/25856
FIGURE 10 in The genus Lernaeenicus Lesueur (Copepoda, Siphonostomatoida, Pennellidae) in India: a checklist with notes on its taxonomy and ecology
No full textFIGURE 10. (A) Lernaeenicus sp. 3 infecting Mugil cephalus Linnaeus, 1758. Lernaeenicus sp. 3: (B) enlarged view; (C) trunk; (D) hind end; (E) head, dorsal view; (F) head, ventral view; (G) head, posterior view.Published as part of Raja, Kuzhanthaivel, Saravanakumar, Ayyapan, Gopalakrishnan, Ayyaru, Vijayakumar, Ramalingam, Hwang, Ui Wook & Maran, Balu Alagar Venmathi, 2016, The genus Lernaeenicus Lesueur (Copepoda, Siphonostomatoida, Pennellidae) in India: a checklist with notes on its taxonomy and ecology, pp. 192-211 in Zootaxa 4174 (1) on page 206, DOI: 10.11646/zootaxa.4174.1.14, http://zenodo.org/record/25856
Total synthesis of (+)-grandiamide D, dasyclamide and gigantamide A from a Baylis–Hillman adduct: A unified biomimetic approach
No full textA unified strategy was followed for the synthesis of three putrescine bisamides, (+)-grandiamide D, dasyclamide and gigantamide A, isolated from leaves of Aglaia gigantea, by making use of a common synthetic intermediate prepared by the Baylis–Hillman reaction. Asymmetric synthesis of the natural (+)-grandiamide D was accomplished from camphor sultam
Synthesis and Characterization of Nitric Oxide-Releasing Platinum(IV) Prodrug and Polymeric Micelle Triggered by Light
No full textHerein, we report the proof of concept of photoresponsive chemotherapeutics comprising nitric oxide-releasing platinum prodrugs and polymeric micelles. Photoactivatable nitric oxide-releasing donors were integrated into the axial positions of a platinum(IV) prodrug, and the photolabile hydrophobic groups were grafted in the block copolymers. The hydrophobic interaction between nitric oxide donors and the photolabile groups allowed for the loading of platinum drugs and nitric oxide-releasing donors in the photolabile polymeric micelles. After cellular uptake of micelles, light irradiation induced the release of nitric oxide, which sensitized the cancer cells. Simultaneously, photolabile hydrophobic groups were cleaved from micelles, and the nitric oxide-releasing donor was altered to be more hydrophilic, resulting in the rapid release of platinum(IV) prodrugs. The strategy of using platinum(IV) prodrugs and nitric oxide led to enhanced anticancer effects.11Nsciescopu
Lernaeenicus hemirhamphi
No full textLernaeenicus hemirhamphi A total of 13,756 individuals of Hemiramphus far were examined, of which 1,800 were infested. Prevalence was almost similar at both stations, i.e. Nagapattinam (13.2%) (Fig. 11 A) and Parangipettai (12.5%) (Fig. 11 C). Higher prevalence was observed during postmonsoon (2011) at Nagapattinam whereas it was lower during premonsoon (2013) at Parangipettai. The overall mean intensity was 1.6 and 1.5 at Nagapattinam (Fig. 11 B) and Parangipettai (Fig. 11 D), respectively (Table 1). Another host, Hemiramphus lutkei, was also examined for L. hemirhamphi; 1,082 out of 11,532 individuals were infested by the pennellid. The overall percentage of prevalence was 9.9% at Nagapattinam and 9.5% at Parangipettai. Prevalence (18.4%) was high during postmonsoon (2011) at Nagapattinam and low (3.5%) during premonsoon (2013) at Nagapattinam. The overall mean intensity was 1.4 at both stations. Seasonal high mean intensity of 1.8 was noted during postmonsoon (2011) at Nagapattinam and but was lower (1.2) during premonsoon (2012) at Parangipettai.Published as part of Raja, Kuzhanthaivel, Saravanakumar, Ayyapan, Gopalakrishnan, Ayyaru, Vijayakumar, Ramalingam, Hwang, Ui Wook & Maran, Balu Alagar Venmathi, 2016, The genus Lernaeenicus Lesueur (Copepoda, Siphonostomatoida, Pennellidae) in India: a checklist with notes on its taxonomy and ecology, pp. 192-211 in Zootaxa 4174 (1) on page 200, DOI: 10.11646/zootaxa.4174.1.14, http://zenodo.org/record/25856
EDS microanalysis of blast furnace slag grains in aged concrete
No full textThe chemistry of ground granulated blast furnace slag (GGBFS) is one of the main factors affecting its reactivity. Knowing the composition of GGBFS used in aged concrete may help understand its past performance and estimate remaining service life. It is well known that GGBFS generally react slower than cement clinker. This thesis proposes that partially hydrated GGBFS grains found in aged concrete could be used to determine its chemical composition. The feasibility of using standard-based energy dispersive X-ray spectroscopy (EDS) microanalysis, along with electron imaging, as a tool for quantitative measurement of the chemical composition of GGBFS grains in cement/concrete is explored in this research. X-ray spectra collected from minerals or glasses of known composition are known as standards for quantitative EDS microanalysis. This study initially examined the performance of mineral and slag standards to quantify X-ray spectra obtained from GGBFS-cement paste specimens of known composition. Parameters such as GGBFS properties, experimental conditions, and microanalysis methodologies that affect the EDS quantitative total and accuracy were elaborated. Then, the same standards were used to quantify the unknown composition of GGBFS used in seven concrete specimens collected in the Netherlands representing different service life, which revealed the variation in GGBFS chemistry over the years. Finally, as a supplementary study, the variation in significant hydration products formed due to variation in GGBFS composition in a cement-GGBFS system was predicted using thermodynamic modelling with GEMS. Altogether, it was concluded that standard-based EDS is a solid tool to characterize the chemical composition of GGBFS used in aged concrete.Civil Engineerin
Application of Lotka\u27s Law to the Research Publications of Alagappa and Bharathidasan Universities: A Comparative Study
No full textThis paper deals with the comparative study of author productivity based on Lotak\u27s law to the research publications of Alagappa and Bharathidasan Universities. The data for the study collected from Web of Science (WOS) database during the period of 2009 to 2018. Straight counting method applied to author productivity for both universities. A total of 1726 research publications from Alagappa University similarly 2778 research publications from Bharathidasan University contributed during the span of study period. Majority of the author productivity tested using Lotka\u27s law by applying Kolmolgorov-Smirnov (K-S) goodness-of-fit test. The result shows the author productivity of Lotka\u27s law was convinced the data set with maximum difference (D) value 0.044 for Alagappa University and 0.148 for Bharathidasan University less than that of critical value
Design and Implementation of Soft Switched High Gain Current Fed Full Bridge DC-DC Converter for Fuel Cell Applications
No full textAbstractThis paper proposes the analysis and design of new current fed full bridge high gain isolated dc-dc converter for fuel cell application. The proposed converter uses voltage multiplier cells on the secondary side. The objective of the proposed converter is to generate DC link voltage for three phase grid from fuel cell. Current fed Converter reduces the input current ripple at the fuel cell input. The converter utilizes the energy stored in the transformer leakage and parasitic capacitance to maintain zero-current-switching (ZCS) over wide range. Soft switching permits higher switching frequency operation, reducing the size, weight and cost of the magnetic components and improve the converter efficiency. A new design method of half-wave Cockcroft–Walton Voltage Multiplier (H-W C-W VM) that lays on the calculation of the optimal number of stages, which is necessary to produce the desired output voltage with the minimum total capacitance value, is also presented. The operating frequency of the converter is 100kHz. The Analysis, simulation and experimental results of the proposed converter are presented. The proposed converter with three stage voltage multiplier is simulated for two different cases full load and half load conditions and the results were analysed. The hardware model for an input voltage of 30V and input current of 5 Amps was designed, the output from the inverter is 40V and output from the voltage multiplier of three stages is 240V and 0.6 Amps
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