ADHUNIK HINDI KAVYA PRAVRITHIYOM KE SANDHARBH MEM NIRALA KAVYA KA ADHYAYAN

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DWIVEDIYUGIN KAVYA MEN RASHTRIYATA EVAM GANDHIVAD KA SWAROOP (NATIONALISM AND GANDHISM AS REFLECTED IN THE POETRY OF DWIVEDI-AGE)

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DB. BAMKIIMAH VARMA KA KAVYA

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Dhwani Evam Sangeet Tatwa Ke Adhar Par Jayashankar Prasad Aur SuryakantThripadhi Nirala Ke Kavya Ka Anusheelan

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HINDI KRISHNA BHAKTHI KAVYA EVAM ALWAR KAVYA MEIN BHAKTHI: EK VISHLESHANATMAK ADHYAYAN

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LOKAYATHAN AUR PARAVARTHI PANT KAVYA

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KHADIBOLI HINDI KAVYA MEIN PAURANIC PATRA(1900-1960)

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Enantiodivergent Formal Total Synthesis of Aspercyclide C from L-(+)-Tartaric Acid

The enantiodivergent formal syntheses of both enantiomers of aspercyclide C is accomplished. Starting from L-(+)-tartaric acid, the key protected allylic alcohol, (3R,4R)-4-(methoxy-methoxy) non-1-en-3-ol is prepared, and is then elaborated into both enantiomers of 3-(4-methoxybenzyl)oxy]non-1-en-4-ol via Mitsunobu inversion. Esterification with a known biaryl acid, followed by ring-closing metathesis and deprotection completes the syntheses.

Spatial filtering nearly eliminates the side-lobes in single- and multi-photon 4pi-type-C super-resolution fluorescence microscopy

Super-resolution microscopy has tremendously progressed our understanding of cellular biophysics and biochemistry. Specifically, 4pi fluorescence microscopy technique stands out because of its axial super-resolution capability. All types of 4pi-microscopy techniques work well in conjugation with deconvolution techniques to get rid of artifacts due to side-lobes. In this regard, we propose a technique based on spatial filter in a 4pi-type-C confocal setup to get rid of these artifacts. Using a special spatial filter, we have reduced the depth-of-focus. Interference of two similar depth-of-focus beams in a 4 pi geometry result in substantial reduction of side-lobes. Studies show a reduction of side-lobes by 46% and 76% for single and two photon variant compared to 4pi - type - C confocal system. This is incredible considering the resolving capability of the existing 4pi - type - C confocal microscopy. Moreover, the main lobe is found to be 150 nm for the proposed spatial filtering technique as compared to 690 nm of the state-of-art confocal system. Reconstruction of experimentally obtained 2PE - 4pi data of green fluorescent protein (GFP)-tagged mitocondrial network shows near elimination of artifacts arising out of side-lobes. Proposed technique may find interesting application in fluorescence microscopy, nano-lithography, and cell biology. (C) 2013 AIP Publishing LLC.