Pooja Srivastava

ORCID: 0000-0003-0287-9162
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About
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Research Areas
  • MXene and MAX Phase Materials
  • 2D Materials and Applications
  • Radiopharmaceutical Chemistry and Applications
  • Graphene research and applications
  • Natural product bioactivities and synthesis
  • Lanthanide and Transition Metal Complexes
  • dental development and anomalies
  • Moringa oleifera research and applications
  • Phytochemistry and Biological Activities
  • Nanoparticles: synthesis and applications
  • Essential Oils and Antimicrobial Activity
  • Advanced Photocatalysis Techniques
  • Phytochemicals and Medicinal Plants
  • Advanced Condensed Matter Physics
  • Boron and Carbon Nanomaterials Research
  • Physics of Superconductivity and Magnetism
  • Oral and Maxillofacial Pathology
  • Drug Transport and Resistance Mechanisms
  • Medicinal Plants and Neuroprotection
  • Dental Anxiety and Anesthesia Techniques
  • Advancements in Battery Materials
  • Inflammatory Myopathies and Dermatomyositis
  • Adenosine and Purinergic Signaling
  • Computational Drug Discovery Methods
  • Iron-based superconductors research

Dr. Ram Manohar Lohia Avadh University
2025

Institute of Nuclear Medicine & Allied Sciences
2013-2024

Defence Research and Development Organisation
2022-2024

Albert Einstein College of Medicine
2023

Montefiore Medical Center
2023

Government of India
2022

Magee-Womens Hospital
2022

University of Pittsburgh Medical Center
2022

University of Lucknow
2021

Delhi Technological University
2016-2019

MXene, a two-dimensional layer of transition metal carbides/nitrides, showed great promise for energy storage, sensing, and electronic applications. MXene are chemically exfoliated from the bulk MAX phase; however, mechanistic understanding exfoliation subsequent functionalization these technologically important materials is still lacking. Here, using density-functional theory we show that Ti3C2 proceeds via HF insertion through edges Ti3AlC2 phase. Spontaneous dissociation termination edge...

10.1021/acsami.6b08413 article EN ACS Applied Materials & Interfaces 2016-08-18

We demonstrate that an antiferromagnetic coupling between paramagnetic Fe-porphyrin molecules and ultrathin Co Ni magnetic films on Cu(100) substrates can be established by intermediate layer of atomic oxygen. The energies have been determined from the temperature dependence x-ray circular dichroism measurements. By density functional $\mathrm{\text{theory}}+U$ calculations mechanism is shown to superexchange Fe center surface-atoms, mediated

10.1103/physrevlett.102.047202 article EN Physical Review Letters 2009-01-29

We report a density functional theory (DFT) study regarding the effects of atomic defects, such as vacancies and adatom adsorption, on electronic magnetic properties phosphorene (a two-dimensional monolayer black phosphorus). A monovacancy in creates an in-gap state band gap pristine induces moment, even though is nonmagnetic. In contrast, both planar staggered divacancies do not change phosphorene, although divacancy states gap. Our DFT calculations also show that adsorption nonmetallic...

10.1021/jp5110938 article EN The Journal of Physical Chemistry C 2015-03-09

Biofilms are microbial colonies that encased in an organic polymeric matrix and resistant to antimicrobial treatments. can adhere both biotic abiotic surfaces, allowing them colonize medical equipment such as urinary intravenous catheters, mechanical heart valves, endotracheal tubes, prosthetic joints. Candida albicans biofilm is the major etiological cause of pathogenesis candidiasis which its unobstructed growth occurs oral cavity; trachea, catheters progress systemic infections worst...

10.3389/fmicb.2021.741493 article EN cc-by Frontiers in Microbiology 2022-01-07

Complete chemical transformation of MAX (Nb<sub>4</sub>AlC<sub>3</sub>) into pristine MXene (Nb<sub>4</sub>C<sub>3</sub>) in the presence LiF.

10.1039/c5cp07609a article EN Physical Chemistry Chemical Physics 2016-01-01

Oxygen-functionalized MXene, M2CO2 (M = group III–V metals), are emergent formidable two-dimensional (2D) materials with a tantalizing possibility for device applications. Using first-principles calculations, we perform an intensive study on the stability of fully O-functionalized (M2CO2) MXenes. Depending position O atoms, can exist in two different structural phases. On one side atom occupies site which is exactly top metal from opposite side. other side, occupy either (BB′ phase) or C (CB...

10.1021/acs.jpcc.7b06162 article EN The Journal of Physical Chemistry C 2017-08-04

Abstract Selenium nanoparticles (SeNPs) are gaining importance in the field of medicines due to their high surface area and unique properties than other forms selenium. In this study, biogenic selenium (B-SeNPs) were synthesized using cyanobacteria bioactivities (antioxidant, antimicrobial, anticancer biocompatibility) determined for comparison with commercially available chemically (C-SeNPs). Color change reaction mixture from sky blue orange-red indicated synthesis SeNPs (B-SeNPs). UV–Vis...

10.1038/s41598-021-91738-7 article EN cc-by Scientific Reports 2021-06-29

Triple-negative breast cancers (TNBCs) often have a high Ki-67 proliferation index and respond favorably to neoadjuvant chemotherapy (NACT) with pathologic complete response (pCR) resulting in ~40% of cases. Nevertheless, morbidity/mortality remain high, mostly due recurrence patients residual disease. In contrast, the incidence clinical features TNBC low (TNLP), defined as ≤30% remains unknown. We report 70 cases TNLP identified at our center from 2008 2018, including 18 treated NACT....

10.1038/s41523-022-00415-z article EN cc-by npj Breast Cancer 2022-04-20

An epidemiological transition is evident in low- and middle-income nations, such as India, where non communicable diseases (NCDs) accidents are displacing the leading causes of disability, morbidity, premature mortality. Nowadays, globally, non-communicable illnesses a significant problem. Non (NCDs), sometimes referred to chronic diseases, often long-lasting caused by confluence behavioral, physiological, environmental, genetic variables. More than 75% NCD deaths worldwide occur individuals...

10.30574/ijsra.2025.14.2.0367 article EN International Journal of Science and Research Archive 2025-02-13

Protection against radiation-induced DNA strand breaks is an important aspect in the design and development of a radioprotector. In this study, radioprotective efficacy sesamol, natural antioxidant, was investigated aqueous solution plasmid (pBR322) compared with that melatonin, known antioxidant-based Thermal denaturation studies on irradiated calf thymus were also carried out sesamol melatonin. Sesamol demonstrated greater both DNA. To assess radical scavenging capacity 2-deoxyribose...

10.1667/rr2661.1 article EN Radiation Research 2011-10-25

BACKGROUND The international system for reporting serous fluid cytopathology (TIS) recommends submitting at least 50‐75 mL of to decrease false‐negative results. However, prior studies did not agree on specific volume requirements or consensus adequacy criteria. Our study aims assess whether affects the rate and minimum necessary optimal in pleural peritoneal fluids. METHODS A total 8530 cytology cases were identified laboratory information system. Differences mean received compared using an...

10.1002/cncy.22577 article EN Cancer Cytopathology 2022-04-25

Direct reduction of gas-phase CO2 to renewable fuels and chemical feedstock without any external energy source or rare-metal catalyst is one the foremost challenges. Here, using density functional theory ab initio molecular dynamics (AIMD) simulations, we predict Ti2C(OH)2 MXene as an efficient electron-coupled proton donor exhibiting simultaneously high reactivity selectivity for reaction (CRR) by yielding valuable chemicals, formate, formic acid. This caused spontaneously crossing...

10.1021/acsami.2c10213 article EN ACS Applied Materials & Interfaces 2022-08-30

Stacking two or more two-dimensional materials to form a heterostructure is becoming the most effective way generate new functionalities for specific applications. Herein, using GW and Bethe–Salpeter equation simulations, we demonstrate generation of linearly polarized, anisotropic intra- interlayer excitonic bound states in transition metal monochalcogenide (TMC) GeSe/SnS van der Waals heterostructure. The puckered structure TMC results directional anisotropy band state. Upon application...

10.1021/acs.jpclett.0c03469 article EN The Journal of Physical Chemistry Letters 2021-02-11

Liquid–liquid partitioning of Ricinus communis root methanol extract resulted in enrichment compounds. Purification the n-hexane fraction led to isolation and characterisation two triterpenes: one known compound lupeol (1) a new diketone pentacyclic triterpene named as erandone (urs-6-ene-3,16-dione) (2), from plant. Their structures were determined by various spectroscopic techniques. Crude methanolic, enriched isolates at doses 100 mg/kg p.o. exhibited significant (P < 0.001)...

10.1080/14786419.2013.861834 article EN Natural Product Research 2013-11-27
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