A5014895890- Pancreatic and Hepatic Oncology Research
- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Nuclear physics research studies
- Luminescence and Fluorescent Materials
- Pancreatitis Pathology and Treatment
- Esophageal and GI Pathology
- Gastric Cancer Management and Outcomes
- Carbon and Quantum Dots Applications
- Esophageal Cancer Research and Treatment
- Gallbladder and Bile Duct Disorders
- Gastrointestinal disorders and treatments
- Quantum Dots Synthesis And Properties
- Astronomical and nuclear sciences
- Radiomics and Machine Learning in Medical Imaging
- Atomic and Molecular Physics
- Agricultural Economics and Practices
- Gastrointestinal Tumor Research and Treatment
- Nanocluster Synthesis and Applications
- Pediatric Hepatobiliary Diseases and Treatments
- Genetics and Plant Breeding
- Photoreceptor and optogenetics research
- Intestinal Malrotation and Obstruction Disorders
- Photochemistry and Electron Transfer Studies
- RNA and protein synthesis mechanisms
University of Kalyani
2010-2023
University of Rochester
2023
ITMO University
2021-2022
Indian Institute of Engineering Science and Technology, Shibpur
2018-2022
Regional Institute of Medical Sciences
2017-2022
Indian Institute of Science Education and Research Kolkata
2014-2021
Heliae (United States)
2021
Madan Mohan Malaviya University of Technology
2016-2019
Nanjing Institute of Vegetable Science
2019
Sanjay Gandhi Post Graduate Institute of Medical Sciences
2018
The molecular origin of the photoluminescence carbon dots (CDs) is shown.
The objective of this study was to assess the effect that triple therapy (anticoagulation plus CS plasma exchange and/or IVIGs) has on mortality risk patients with catastrophic APS (CAPS) included in CAPS Registry.Patients from Registry were grouped based their treatments: therapy; drugs but different combinations; and none treatments therapy. primary endpoint all-cause mortality. Multivariate logistic regression models used compare between groups.The cohort 525 episodes accounting for 502...
Carbon dots (CDs) are light-emitting nanoparticles that show great promise for applications in biology and medicine due to the ease of fabrication, biocompatibility, attractive optical properties. Optical chirality, on other hand, is an intrinsic feature inherent many objects nature, it can play important role formation artificial complexes based CDs implemented enantiomer recognition, site-specific bonding, etc. We employed a one-step hydrothermal synthesis produce chiral from commonly used...
The molecular origin of the photoluminescence (PL) carbon dots (CDs) is not fully understood. In this article it shown that CDs are composed aggregated 2-pyridone derivatives employing π–π stacking and H-bonding, etc. PL quantum yield CD quite high in aqueous medium (∼75%). Unlike literature reports emission maximum excitation wavelength independent, decay follows a single-exponential equation. These have long lifetime (from ∼10 to 15 ns), so solvation complete before emission. extent trap...
Chiral carbon dots have been produced <italic>via</italic> two synthetic approaches using <sc>l/d</sc>-cysteine resulting in improvement of emission quantum yield and realization two-photon absorption which are attractive features for bio applications.
Abstract We present herein a new class of singularity-free interior solutions to describe realistic anisotropic compact stellar objects with spherically symmetric matter distribution. A specific form anisotropy is assumed obtain the exact solution for field equation. Smooth matching thus obtained Schwarzschild exterior metric over bounding surface star, together condition that radial pressure vanishes at boundary, used mathematical model parameters. The pulsar 4U1608-52 its current estimated...
We report the synthesis and dynamical behavior of a carbon dot (CD) with near 100% photoluminescence quantum yield in water for very large pH range (1-12). This CD exhibits rotational correlational time only ∼130 ps, signifying whole is not exhibiting photoluminescence. Unlike most carbon-based nanoparticles (which act as quencher fluorescence), this could donor, Förster model account experimental observables resonance energy transfer (RET) experiment quite well. Based on two measurements,...
Core/alloy-shell/shell quantum dots (CASS QDs) have been shown to exhibit excitation energy dependent PL efficiency. The magnitude of the normalized transient population has increase more than 5-fold with decreasing energy. For high cooling exciton (predominantly electron) band edge is much slower (rise time ∼526 fs) in comparison low <∼100 fs). Time constant associated dynamics hot electron trapping ∼1 ps. related independent hole ∼35 Truncation obtained from single particle investigation...
Background and AimsAs community-based ambulatory endoscopy centers (AECs) across the nation are trying to reopen safely resume outpatient endoscopic procedures after unprecedented lockdown related coronavirus disease 2019 (COVID-19) pandemic, guidelines recommend pretesting screening for COVID-19 along with other mitigation measures safety of patients staff. The impact such changes in workflow AECs on throughput performance indicators is largely unknown, although a significant reduction...
It has been shown recently that aggregated dyes are responsible for very high fluorescence in a carbon dot (CD). However, what is the location of fluorescing moiety CD? Is it inside CD or attached to CD's surface? In order answer these intriguing questions regarding CD, we performed rotational anisotropy decay dynamics and resonance energy transfer (RET) dynamics. Rotational correlation time ∼120 picoseconds nullifies fact whole fluorescing. Instead, can say either embedded surface linked...
Dual fluorescence of GFP chromophore analogues has been observed for the first time. OHIM (o-hydroxy imidazolidinone) shows only a charge transfer (CT) band, CHBDI (p-cyclicamino o-hydroxy benzimidazolidinone) comparable intensity CT and PT (proton transfer) MHBDI (p-methoxy higher band. It could be shown that differential optical behavior is not due to conformational variation in solid or solution phase. Rather, control excited state electronic energy level acidity constant by functional...
Contrary to the belief of chemistry community, intense charge transfer is observed between meta-oriented donor–acceptor moieties in ultrasmall single-benzenic fluorophores. Red emission any solvent has so far been reported with molecular fluorophores having lowest weight (MW) 252.5 Da; however, we have achieved same a meta-fluorophore an MW only 203.1 Da. nonpolar fluorophore minimum 464.5 Da, but 255.3 Intense Stokes (260 nm) and solvatochromic (160 shifts, high magnitudes fluorescence...
The smallest fluorophore reported in literature to emit the red has a MW > 250 Da. Hereby, we report unique way obtain red, orange emission ultrasmall fluorophores (DEAMB, = 207 Da), (DEAB, 177 respectively. In this exceptional concept, explore charge transfer between meta-oriented donor–acceptor moieties single-benzenic (meta-fluors). Unlike existing red-emitting small-fluorophores, our meta-fluors exhibit an intense Stokes shift (225 nm), solvatochromic (175 and excited-state lifetime (21...
For ascertaining component (s) maximizing yield, 21 genotypes (parental cultivar and 20 macromutants) of sesame (Sesamum indicum. L., var - B-67, Family: Pedaliaceae) were analyzed based on genetic parameters viz . variability, character association path analysis considering seven yield related traits (plant height, number primary branches/plant, total distance from base to first branching, capsules main axis, capsules/plant capsule length) (seed yield/seed protein content/seed fatty oil...
Three step chemical tweaking of nonfluorescent parent GFP chromophore has yielded a three hundred times as bright coumarinic fluorophore. A fluorogenic compound been prepared which after photo-uncaging yields the same highly fluorophore that could be used for live stem cell imaging.
Herein, the instantaneous synthesis of highly crystalline, uniform-sized (
The present investigation was carried out to study the effect of different body measurement traits on pre-weaning weight 264 records Ghungroo pigs maintained at Institute Farm National Research Centre Pig, Guwahati, Assam by path analysis. result showed that maximum variability in explained height fore leg (20.98%); followed length (19.50%), heart girth (6.60%) and paunch (5.80%). Though there is high correlation hind with weight, but its direct negative. Effect shoulder also negligible. It...
The nanoscopic environment experienced by a fluorophore while being dissolved in complex structure of room temperature ionic liquid (RTIL) is not fully known. Here we have explored resonance energy transfer (RET) order to an insight this direction noninvasive manner. We varied the alkyl chain length cation and size anion probe within RTIL. Other factors like different excitation wavelengths concentrations has been understand nature more accurately. Förster formulation shown explain...
High spin states of $^{37}\mathrm{Ar}$, populated through the $^{27}\mathrm{Al}(^{12}\mathrm{C},np)^{37}\mathrm{Ar}$ reaction with a 40 MeV $^{12}\mathrm{C}$ beam, were studied using Indian National Gamma Array (INGA) facility. The existing level scheme has been extended up to 10.5 by adding some new levels and transitions. spins parities assigned from ${R}_{\mathrm{DCO}}$, ${R}_{\mathrm{ADO}}$, linear polarization measurements. also modified or confirmed in present experiment. multipole...