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Kaur, Narinder,Singh, Jasminder,Raj, Pushap,Singh, Narinder,Singh, Harpreet,Sharma, Sanjeev K.,Kim, Deuk Young,Kaur, Navneet The Royal Society of Chemistry 2016 New journal of chemistry Vol.40 No.2
<P>ZnO nanoparticles decorated with organic receptor 1 (R1) have been prepared and the resultant compound (N1) was investigated for its metal recognition ability. N1 was found to be selective for mercury ions (Hg2+) in a DMSO/water mixture in a ratio of 7 : 3 and possessed no interference from any of the potential interferent metal ions. The crystal size and morphology of ZnO is characterized using various spectroscopic and diffraction techniques like scanning electron microscopy, X-ray diffraction (XRD), dynamic light scattering (DLS), etc. Surface decoration of the ZnO with receptor 1 is confirmed using NMR spectroscopy. On successive additions of Hg2+ ions, the fluoresence intensity of the compound was quenched at 427 nm with enhancement of the peak at 482 nm, which led to ratiometric sensor development for the recognition of mercury ions having a detection limit of 0.19 nM. The prepared receptor was also tested for real sample application by preparing a known concentration of Hg2+ solution and it was found to respond well with an accuracy more than 90%.</P>
Kaur, Navneet,Xia, Yan,Jin, Yinglan,Dat, Nguyen Tien,Gajulapati, Kondaji,Choi, Yongseok,Hong, Young-Soo,Lee, Jung Joon,Lee, Kyeong Royal Society of Chemistry 2009 Chemical communications Vol.2009 No.14
<P>The first total synthesis of the naturally occurring benzofurans, moracins O and P was achieved using a Sonogashira cross coupling reaction followed by <I>in situ</I> cyclization, and the absolute configuration of natural moracin O was established.</P> <P>Graphic Abstract</P><P>The total synthesis of the natural products, moracins O and P, was achieved using a Sonogashira cross coupling reaction, and the absolute configuration of moracin O was established. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=b823340c'> </P>
Effect of Annealing Temperature on the Structural and Optical Properties of ZrO2 Thin Films
Davinder Kumar,Avtar Singh,Navneet Kaur,Apoorva Katoch,Raminder Kaur 한국재료학회 2022 한국재료학회지 Vol.32 No.5
Transparent thin films of pure and nickel-doped ZrO2 are grown successfully by sol-gel dip-coating technique. The structural and optical properties according to the different annealing temperatures (300 oC, 400 oC and 500 oC) are investigated. Analysis of crystallographic properties through X-ray diffraction pattern reveals an increase in crystallite size due to increase in crystallinity with temperature. All fabricated thin films are highly-oriented along (101) planes, which enhances the increase in nickel doping. Scanning electron microscopy and energy dispersive spectroscopy are employed to confirm the homogeneity in surface morphology as well as the doping configuration of films. The extinction coefficient is found to be on the order of 102, showing the surface smoothness of deposited thin films. UV-visible spectroscopy reveals a decrease in the optical band gap with the increase in annealing temperature due to the increase in crystallite size. The variation in Urbach energy and defect density with doping and the change in annealing temperature are also studied.
New evolution of cone-beam computed tomography in dentistry: Combining digital technologies
Jain, Supreet,Choudhary, Kartik,Nagi, Ravleen,Shukla, Stuti,Kaur, Navneet,Grover, Deepak Korean Academy of Oral and Maxillofacial Radiology 2019 Imaging Science in Dentistry Vol.49 No.3
Panoramic radiographs and computed tomography (CT) play a paramount role in the accurate diagnosis, treatment planning, and prognostic evaluation of various complex dental pathologies. The advent of cone-beam computed tomography (CBCT) has revolutionized the practice of dentistry, and this technique is now considered the gold standard for imaging the oral and maxillofacial area due to its numerous advantages, including reductions in exposure time, radiation dose, and cost in comparison to other imaging modalities. This review highlights the broad use of CBCT in the dentomaxillofacial region, and also focuses on future software advancements that can further optimize CBCT imaging.
New evolution of cone-beam computed tomography in dentistry: Combining digital technologies
Supreet Jain,Kartik Choudhary,Ravleen Nagi,Stuti Shukla,Navneet Kaur,Deepak Grover 대한영상치의학회 2019 Imaging Science in Dentistry Vol.49 No.3
Panoramic radiographs and computed tomography (CT) play a paramount role in the accurate diagnosis, treatment planning, and prognostic evaluation of various complex dental pathologies. The advent of cone-beam computed tomography (CBCT) has revolutionized the practice of dentistry, and this technique is now considered the gold standard for imaging the oral and maxillofacial area due to its numerous advantages, including reductions in exposure time, radiation dose, and cost in comparison to other imaging modalities. This review highlights the broad use of CBCT in the dentomaxillofacial region, and also focuses on future software advancements that can further optimize CBCT imaging.
Kim, Minkyoung,Gajulapati, Kondaji,Kim, Chorong,Jung, Hwa Young,Goo, Jail,Lee, Kyeong,Kaur, Navneet,Kang, Hyo Jin,Chung, Sang J.,Choi, Yongseok The Royal Society of Chemistry 2012 Chemical communications Vol.48 No.93
<P>A variety of diazepinone derivatives were prepared from α-amino acids and amino alcohols by a new synthetic methodology based on ring closing metathesis as a key step. The diazepinones were coupled with ribose derivatives to afford novel diazepinone nucleosides. Among them, (4<I>R</I>)-1-ribosyl-4-methyl-3,4-dihydro-1<I>H</I>-1,3-diazepin-2(7<I>H</I>)-one (<B>3</B>) showed a potent inhibitory effect (<I>K</I><SUB>i</SUB> = 145.97 ± 4.87 nM) against human cytidine deaminase.</P> <P>Graphic Abstract</P><P>Novel diazepinones were prepared from the corresponding α-amino alcohols. The diazepinones were coupled with a ribose to afford novel diazepinone nucleosides <B>2</B> and <B>3</B> with potent inhibition against hCDA. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c2cc35484e'> </P>