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31.
Calcium sulphate phosphors activated with samarium as an impurity with various percentage composition have been prepared and
their fluorescence rise and phosphorescence decay behaviours have been studied. The growth curve is investigated to study
the density of traps. The process of filling of traps during x-ray excitation is revealed. The decay curves are analysed to
study the distribution of traps, the nature of decay and kinetics involved in the luminescence process. The concentration
dependence of fluorescence emission of the phosphors is also discussed. 相似文献
32.
Chen CT Pawar VD Munot YS Chen CC Hsu CJ 《Chemical communications (Cambridge, England)》2005,(19):2483-2485
Functionalized N-2-mercaptoethyl-gallamides bearing three or five hydroxyl units that are tethered with diethylene glycol ether(s) allow for transferring hydrophobically pyridine-capped CdSe/ZnS core/shell nanoparticles from an organic to an aqueous layer with intact fluorescent profiles. 相似文献
33.
D. D. Pawar S. W. Bhaware A. G. Deshmukh 《International Journal of Theoretical Physics》2008,47(3):599-605
In this paper we have investigated bulk viscous fluid plane symmetric dust magnetized string cosmological model. To get a
deterministic model, it is assumed that ε=λ, and a relation between metric potential B=RA
n
. The behaviour of the model in the presence and absence of magnetic field together with physical and geometrical aspects
of the model are also discussed. 相似文献
34.
Heteroatom‐Guided,Palladium‐Catalyzed,Site‐Selective CH Arylation of 4H‐Chromenes: Diastereoselective Assembly of the Core Structure of Myristinin B through Dual CH Functionalization 下载免费PDF全文
Govind Goroba Pawar Virendra Kumar Tiwari Dr. Himanshu Sekhar Jena Dr. Manmohan Kapur 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(27):9905-9911
A highly site‐selective, heteroatom‐guided, palladium‐catalyzed direct arylation of 4H‐chromenes is reported. The C?H functionalization is driven not only by the substituents and structure of the substrate but also by the coupling partner being used. The diastereoselective assembly of the core structure of Myristinin B has been achieved by using a dual C?H functionalization strategy for regioselective direct arylation. 相似文献
35.
Pawar Umakant D. Pawar Chandrakant D. Mavle Rajendra R. Pardeshi Rajendra K. 《平面色谱法杂志一现代薄层色谱法》2019,32(5):435-437
JPC – Journal of Planar Chromatography – Modern TLC - A novel chromogenic reagent was developed for the identification and detection of organophosphorus herbicide. The organophosphorus... 相似文献
36.
Kolhe Nitin H. Jadhav Shridhar S. Thube Dilip R. Takate Sushma J. Bankar Ashok V. Moharekar Sanjay T. Pawar Hari R. Moharekar Shubhangi S. 《Research on Chemical Intermediates》2021,47(2):459-481
Research on Chemical Intermediates - In the present study, the synthesis of ligand 6-chloro-5-7-dimethyl-4oxo-4H-chromene-3-carbaldehydes by three steps from the substituted phenol. The formed... 相似文献
37.
38.
The first successful Pd(OAc)2, N-donor ligand and base mediated Heck coupling reaction of aryl halides and alkenes in water is described. The corresponding Heck products were obtained in good to excellent yields. 相似文献
39.
Shivaji S. Pawar Deepak V. Dekhane Shivaji N. Thore Murlidhar S. Shingare 《Journal of heterocyclic chemistry》2008,45(6):1869-1873
A novel approach for the Aza‐Michael addition reactions between various amines and α,β‐unsaturated esters, nitriles and ketones using N‐donor Ligand catalyst (3 mol %) is described. The reactions are carried out in aqueous media at an ambient temperature to afford the products in excellent yields. 相似文献