Effect of alumina on dc ionic conductivity of barium nitrate solid electrolyte

Reddy, S. Narender; Chary, A. Sadananda; Reddy, Ch. Gopal; Rao, M. V. Madhava

doi:10.1016/j.matlet.2004.03.040

Cited by 11 publications

(2 citation statements)

References 18 publications

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“…[1,2]. There are two reasons for the high ionic conductivity of these superionic materials, one is the presence of a large number of defects and vacancies in the lattice at room temperature and the second is the low coordination number of the mobile ions [3][4][5]. There are several new materials for efficient proton conductivity, among them cesium dihydrogen phosphate (CDP), showing a superprotonic phase transition at 230 °C [6,7].…”

Section: Introductionmentioning

confidence: 99%

Structural, thermal and electrical properties of composites electrolytes (1−x) CsH2PO4/x ZrO2 (0 ≤ x ≤ 0.4) for fuel cell with advanced electrode

et al. 2021

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Composites proton conducting material based on cesium dihydrogen phosphate (CDP) doped with zirconium oxide (1−x) CsH2PO4/x ZrO2 were synthesized with different concentration having in the range such as x = 0.1, 0.2, 0.3 and 0.4 by ball milling method. The prepared solid acid composites were dried at 150 °C for 6 h. Structural and thermal characterization of solid acid composite proton electrolytes were carried out by X-ray diffractometer, Fourier transform infrared spectroscopy, and Raman spectroscopy respectively. Phase transition of the prepared materials was carried out by using differential scanning calorimetry and conductivity was measured by LC Impedance meter in the range 1 Hz to 400 kHz. The ionic conductivity of ZrO2 doped CsH2PO4 (CDP) was increased up to 1.3 × 10–2 S cm−1 at the 280 °C under environment atmospheric humidification which showed high stability as compared to pure CsH2PO4 (CDP). This obtaining result would be useful for establishing and design the next generation fuel cell.

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Section: Introductionmentioning

confidence: 99%

Structural, thermal and electrical properties of composites electrolytes (1−x) CsH2PO4/x ZrO2 (0 ≤ x ≤ 0.4) for fuel cell with advanced electrode

et al. 2021

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“…In addition, F. assafoetida is cross-pollinated in nature and insects serve as its pollinator agents. The plants develop seeds that have large wings, thereby increasing the chances of seed dispersal further (Reddy et al 2007). The pooled data (SCoT + URP) con rmed the ndings of the Beyesian structure.…”

Section: Discussionmentioning

confidence: 99%

Universal Rice Primer (URP) and Start Codon Target (SCoT) Markers in Studying Population Structures and Genetic Variation in Ferula AssafoetidaL. Accessions

Sadeghi

Omidi

Azizinezhad

et al. 2021

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Ferula assafoetidais an herbaceous, annual and monocarpic genus of the Apiaceae family. So far, there has been common usage of Ferula oleo resinous gum in food and herbal medicines.The origin of F.assafoetidais can be traced back into the steppes of Iran and some reigns of Afghanistan with an extended distribution. Despite the economic value and therapeutic importance of F.assafoetida, only a few studies have reported on the genetic capacity of this herb.The present study was carried out on a set of 90 individual plants belonging to different populations of Ferula assafoetida L. via the start codon target marker (SCoT) and the universal rice primer (URP) markers. Twelve SCoT and twelve URP primers generated 192 and 149 polymorphic fragments, while having 16 and 12.41 fragments respectively on average per primer. The Polymorphism information content (PIC) for URP primers and ScoT ranged from 0.31 to 0.43 and 0.34 to 0.44 respectively, which indicated a good efficiency forboth markers. The diversity indices including heterozygosity (He), percentage of polymorphic bands (PPB), Shannon’s information index (I) and marker index (MI) were calculated based on the SCoT and URP data.The results revealed that SCoT primers were more efficient than URP primers in identifying genetic diversity within populations. Neighbor joining (Nj), as a base for clustering, classified 90 accessions into 5 and 6 groups using SCoT and URP data respectively. Moreover, the combined data (SCoT+URP) succeeded in classifying all accessions into 6 groups, although this did not correspond with the geographical distribution of accessions. Structure analysis divided 90 genotypesinto 5 subpopulations using SCoT and URP markers, whereas the combined data (SCoT+URP) divided the accessions into 6 subpopulations, which confirmed the classification achieved by the Nj method. Principal coordinate analysis (PCoA) corroborated these conclusions. According to the analysis of molecular variance) AMOVA(, a high percentage of genetic diversity was found within the species, suggesting a rich diversity of germplasm for breeding plans. The assessment of population structure demonstrated a high rate of gene flow and the mixture of populations. Taken together, our findings suggest SCoT markers are more efficient than URP markers in assessing genetic diversity among F.assafoetida genotypes. All in all, genetic diversity could help the selection of appropriate markers and special genotypes for breeding plans.

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