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| 1 | Ruddlesden-Popper phase A2BO4 oxides:Recent studies on structure,electrical,dielectric,and optical properties显示文摘In the last two decades,structure and properties of Ruddlesden–Popper phase(RP)A2BO4 oxides with K2NiF4 structure,have been widely investigated.But to the best of our knowledge,no review article is available in the literature on recent studies on these oxides.Therefore,in this article,recent studies on structure,electrical,dielectric,and optical properties of these oxides have been reviewed.Special attention is put on to highlight the effect of doping and oxygen stoichiometry on the structure and properties of these oxides.Further,important applications of these oxides have also been mentioned in this article. | Gurudeo NIRALA Dharmendra YADAV Shail UPADHYAY | 2020 | Journal of Advanced Ceramics2020，9，2： | 4 |
| 2 | 6-Substituted imidazo[1,2- a ]pyridines: Synthesis and biological activity against colon cancer cell lines HT-29 and Caco-2显示文摘 | Nurit Dahan-Farkas Candice Langley Amanda L. Rousseau Dharmendra B. Yadav Hajierah Davids Charles B. de Koning | 2011 | European Journal of Medicinal Chemistry2011，，9： | 1 |
| 3 | Synthesis and biological evaluation of novel (L)-a-amino acid methyl ester, heteroalkyl, and aryl substituted 1,4-naphthoquinone derivatives as antifungal and antibacterial agents显示文摘 | Vishnu K Tandon Dharmendra B Yadav a Ravindra V Singh | 2005 | Bioorganic & Medicinal Chemistry Letters2005，15，： | 1 |
| 4 | Study of structural, electrical, and photoluminescent properties of SrCeO3 and Sr2CeO4显示文摘Phase pure powders of SrCeO3 and Sr2Ce O4 have been synthesized by calcination at 1000℃for 14 h via solid state ceramic route.Ceramics/pellets of these samples have been obtained by sintering at 1200℃for 12 h.The Rietveld refinement of X-ray diffraction(XRD)pattern of sintered powders confirmed orthorhombic structure of both the samples with space group Pnma and Pbam for SrCeO3 and Sr2CeO4,respectively.Scanning electron microscopic(SEM)studies indicated that both the compounds have dense microstructure,but morphology and size of the grains are different.The impedance spectroscopy technique has been employed to study the relaxation phenomenon.DC conductivity of the samples has been measured in the temperature range of 200–600℃to understand the conduction mechanism.The activation energy for relaxation(Erelax)and DC conduction(Econd)are found to be the same for both the compounds.Based on the numerical value of activation energies,relaxation and conduction mechanism in both the samples are attributed to migration of doubly ionized oxygen vacancies(Vo··).Photoluminescence technique has been employed to confirm the existence of oxygen vacancies.These studies have indicated that migration of oxygen vacancies in Sr2CeO4 is occurring mainly along a and c direction,i.e.,via perovskite cells.Further,the present work has clearly indicated that besides optical properties,electrical properties of Sr2CeO4 are also interesting and can be utilized for various applications such as oxide ion conduction electrolyte in solid oxide fuel cells(SOFCs). | Dharmendra Yadav Upendra Kumar Shail Upadhyay | 2019 | Journal of Advanced Ceramics2019，8，3： | 0 |
| 5 | Effect of picking multiple colonies on antimicrobial susceptibility diagnostic outcome in a clinical bacteriology setting显示文摘giving results of antimicrobial susceptibility testing(AST)even if the infection is detected due to a single type of bacteria.However,what should be the minimum number of colonies?The clinical laboratory manuals are silent and give different numbers.Thus,the present study was conducted to evaluate the impact of picking up more than one colony for antimicrobial susceptibility.Method:The study was conducted on those clinical samples yielding Escherichia coli either as pure culture or as a prominent cause of infection.The impact of testing multiple colonies of Escherichia coli isolates was assessed on AST results through the detection of extended-spectrum β-lactamase(ESBL)producing and Metallo-β-lactamase(MBL)producing Escherichia coli carriage in clinical samples.Results:A total of 1031 samples having E.coli as the most prominent or single pathogen were analyzed.It included testing either one,two,three,four,five,or more than five(6-10)representative E.coli colonies from 526,247,115,76,31,and 36 samples,respectively.The study revealed that testing of less than three representative colonies significantly(p<0.05)impacts the outcome.However,the best outcome was when≥6 representative colonies were tested for AST.Conclusion:The study suggested that≥6 representative colonies should be emulsified for antimicrobial susceptibility tests not to miss possible infection with ESBL or MBL-producing mutants,even in mono-culture infections. | Bhoj R Singh Dharmendra K Sinha Varsha Jayakumar Himani Agri Akanksha Yadav Ravichandran Karthikeyan | 2023 | Infectious Diseases Research2023，4，2： | 0 |
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