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  1. Article ; Online: Enhancing the performance of BN nanosheets as promising anode material for Li-ion batteries with carbon-doping.

    Tyagi, Neha / Jaiswal, Neeraj K

    Journal of molecular graphics & modelling

    2022  Volume 115, Page(s) 108213

    Abstract: Li-ion batteries (LIB) are an integral part of portable electronic gadgets. Enhancing the performance of LIB is an active area of research. Here, we investigated the lithiation properties of pure and C-doped BN (BCN) nanosheets using density functional ... ...

    Abstract Li-ion batteries (LIB) are an integral part of portable electronic gadgets. Enhancing the performance of LIB is an active area of research. Here, we investigated the lithiation properties of pure and C-doped BN (BCN) nanosheets using density functional theory. Our calculations show that adsorption energy (E
    Language English
    Publishing date 2022-05-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1396450-1
    ISSN 1873-4243 ; 1093-3263
    ISSN (online) 1873-4243
    ISSN 1093-3263
    DOI 10.1016/j.jmgm.2022.108213
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Hypothesizing the Green Synthesis of Tamoxifen Loaded Magnetic Nanoparticles for the Treatment of Breast Cancer.

    Tyagi, Neha / Ralli, Tanya / Ali, Asgar / Kohli, Kanchan

    Current molecular medicine

    2023  Volume 24, Issue 5, Page(s) 537–546

    Abstract: Breast cancer is the second leading cause of death all over the world and is not only limited to females but also affects males. For estrogen receptor-positive breast cancer, tamoxifen has been considered the gold-line therapy for many decades. However, ... ...

    Abstract Breast cancer is the second leading cause of death all over the world and is not only limited to females but also affects males. For estrogen receptor-positive breast cancer, tamoxifen has been considered the gold-line therapy for many decades. However, due to the side effects associated with the use of tamoxifen, its use is only limited to individuals in high-risk groups and limits its clinical application to moderate and/or lower-risk groups. Thus, there is a necessity to decrease the dose of tamoxifen, which can be achieved by targeting the drug to breast cancer cells and limiting its absorption to other body parts. Artificial antioxidants used in the formulation preparation are assumed to upsurge the risk of cancer and liver damage in humans. The need of the hour is to explore bioefficient antioxidants from natural plant sources as they are safer and additionally possess antiviral, anti-inflammatory, and anticancer properties. The objective of this hypothesis is to prepare tamoxifen-loaded PEGylated NiO nanoparticles using green chemistry, tumbling the toxic effects of the conventional method of synthesis for targeted delivery to breast cancer cells. The significance of the work is to hypothesize a green method for the synthesis of NiO nanoparticles that are eco-friendly, cost-effective, decrease multidrug resistance, and can be used for targeted therapy. Garlic extract contains an organosulfur compound (Allicin) which has drug-metabolizing, anti-oxidant, and tumour growth inhibition effects. In breast cancer, allicin sensitizes estrogen receptors, increasing the anticancer efficacy of tamoxifen and reducing offsite toxicity. Thus, this garlic extract would act as a reducing agent and a capping agent. The use of nickel salt can help in targeted delivery to breast cancer cells and, in turn, reduces drug toxicity in different organs. This novel strategy may aim for cancer management with less toxic agents acting as an apt therapeutic modality.
    MeSH term(s) Tamoxifen/pharmacology ; Tamoxifen/chemistry ; Humans ; Breast Neoplasms/drug therapy ; Breast Neoplasms/pathology ; Breast Neoplasms/metabolism ; Female ; Magnetite Nanoparticles/chemistry ; Green Chemistry Technology ; Antineoplastic Agents, Hormonal/pharmacology ; Antineoplastic Agents, Hormonal/chemistry ; Antineoplastic Agents, Hormonal/therapeutic use
    Chemical Substances Tamoxifen (094ZI81Y45) ; Magnetite Nanoparticles ; Antineoplastic Agents, Hormonal
    Language English
    Publishing date 2023-05-22
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2064873-X
    ISSN 1875-5666 ; 1566-5240
    ISSN (online) 1875-5666
    ISSN 1566-5240
    DOI 10.2174/1566524023666230525104730
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Publisher's Note: "The relaxation dynamics of single flow-stretched polymers in semidilute to concentrated solutions" [J. Chem. Phys. 154, 024907 (2021)].

    Tyagi, Neha / Cherayil, Binny J

    The Journal of chemical physics

    2021  Volume 154, Issue 11, Page(s) 119901

    Language English
    Publishing date 2021-03-22
    Publishing country United States
    Document type Published Erratum
    ZDB-ID 3113-6
    ISSN 1089-7690 ; 0021-9606
    ISSN (online) 1089-7690
    ISSN 0021-9606
    DOI 10.1063/5.0044138
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: The relaxation dynamics of single flow-stretched polymers in semidilute to concentrated solutions.

    Tyagi, Neha / Cherayil, Binny J

    The Journal of chemical physics

    2021  Volume 154, Issue 2, Page(s) 24907

    Abstract: Recent experiments on the return to equilibrium of solutions of entangled polymers stretched by extensional flows [Zhou and Schroeder, Phys. Rev. Lett. 120, 267801 (2018)] have highlighted the possible role of the tube model's two-step mechanism in the ... ...

    Abstract Recent experiments on the return to equilibrium of solutions of entangled polymers stretched by extensional flows [Zhou and Schroeder, Phys. Rev. Lett. 120, 267801 (2018)] have highlighted the possible role of the tube model's two-step mechanism in the process of chain relaxation. In this paper, motivated by these findings, we use a generalized Langevin equation (GLE) to study the time evolution, under linear mixed flow, of the linear dimensions of a single finitely extensible Rouse polymer in a solution of other polymers. Approximating the memory function of the GLE, which contains the details of the interactions of the Rouse polymer with its surroundings, by a power law defined by two parameters, we show that the decay of the chain's fractional extension in the steady state can be expressed in terms of a linear combination of Mittag-Leffler and generalized Mittag-Leffler functions. For the special cases of elongational flow and steady shear flow, and after adjustment of the parameters in the memory function, our calculated decay curves provide satisfactory fits to the experimental decay curves from the work of Zhou and Schroeder and earlier work of Teixeira et al. [Macromolecules 40, 2461 (2007)]. The non-exponential character of the Mittag-Leffler functions and the consequent absence of characteristic decay constants suggest that melt relaxation may proceed by a sequence of steps with an essentially continuous, rather than discrete, spectrum of timescales.
    Language English
    Publishing date 2021-01-14
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3113-6
    ISSN 1089-7690 ; 0021-9606
    ISSN (online) 1089-7690
    ISSN 0021-9606
    DOI 10.1063/5.0037513
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Scrotal plaques as a predominant presentation in a case of secondary syphilis.

    Bains, Anupama / Tyagi, Neha

    Indian journal of dermatology, venereology and leprology

    2021  Volume 87, Issue 2, Page(s) 252–254

    MeSH term(s) Adult ; Anti-Bacterial Agents/pharmacology ; Anti-Bacterial Agents/therapeutic use ; Diagnosis, Differential ; Humans ; Male ; Penicillin G Benzathine/pharmacology ; Penicillin G Benzathine/therapeutic use ; Scrotum/drug effects ; Scrotum/pathology ; Syphilis/diagnosis ; Syphilis/drug therapy
    Chemical Substances Anti-Bacterial Agents ; Penicillin G Benzathine (RIT82F58GK)
    Language English
    Publishing date 2021-03-26
    Publishing country United States
    Document type Case Reports ; Letter
    ZDB-ID 416068-x
    ISSN 0973-3922 ; 0019-5162 ; 0378-6323
    ISSN (online) 0973-3922
    ISSN 0019-5162 ; 0378-6323
    DOI 10.25259/IJDVL_234_20
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Thesis ; Online: Resilient TDMA-based Communication Algorithm for Dynamic Ad-hoc Networks and Formal Verification

    Tyagi, Neha

    2018  

    Abstract: In recent years, within the broad context of mobile communication systems, a significant research has been evolved in the study of wireless ad-hoc networks. Due to the self-organizing nature of these networks, efficient delivery of data packets to the ... ...

    Abstract In recent years, within the broad context of mobile communication systems, a significant research has been evolved in the study of wireless ad-hoc networks. Due to the self-organizing nature of these networks, efficient delivery of data packets to the mobile nodes, where the topology is neither pre-determined nor does the network have central control, many problems arise in order to ensure a persistent communication. Packet loss in a multi-hop network is a major concern for ad-hoc distributed networks based systems. MAC layer contention is much more severe in multihop ad hoc networks as compared to wireless LANs. To mitigate this problem, we present a distributed, TDMA and slotted ALOHA protocol based communication approach for mobile robots in ad-hoc networks. Our work focuses on real time communication in a dynamic network where nodes can leave and join the network anytime. In this thesis, we propose an algorithm to establish self-sustaining communication among nodes. In our system processes become aware of their surrounding using slotted ALOHA protocol. Our system ensures self-stability by detecting lost messages and reset the system to ALOHA. Subsequently the system initiates the communication process again. Our work shows that with combined ALOHA and TDMA protocol, a resilient and robust communication is achievable, where the packet loss is minimum. Our work also shows that self sustaining distributed communication is possible with minimum transitions to the different communication states, such as ALOHA to TDMA. This thesis demonstrates a successful communication process among mobile robotic nodes using our proposed algorithm. In this thesis, we also define the safety, liveness, and fairness properties using linear time logic (LTL) to verify the correctness of the proposed algorithm. We have defined these properties for our algorithm. We then verify the system for these properties under error prone conditions such as message loss, along with this we also make sure that our algorithm follows a fair approach of resource allocation and never end in an undesirable state. We have modeled our communication algorithm using SPIN model checker. SPIN is based on PROMELA language and provides an extensive user interface to define the model and verify the properties using Formal Methods of Verification.
    Keywords Computer science
    Subject code 000
    Language ENG
    Publishing date 2018-01-01 00:00:01.0
    Publisher California State University, Long Beach
    Publishing country us
    Document type Thesis ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Using QMRA to understand possible exposure risks of SARS-CoV-2 from the water environment

    Tyagi, Neha / Gurian, Patrick L. / Kumar, Arun

    Environ Sci Pollut Res. 2022 Jan., v. 29, no. 5 p.7240-7253

    2022  

    Abstract: This study investigated the human risk of infection due to inadvertent ingestion of water during swimming in a river that receives SARS-CoV-2-containing effluent from a wastewater treatment plant (WWTP). A quantitative microbial risk assessment (QMRA) ... ...

    Abstract This study investigated the human risk of infection due to inadvertent ingestion of water during swimming in a river that receives SARS-CoV-2-containing effluent from a wastewater treatment plant (WWTP). A quantitative microbial risk assessment (QMRA) approach was applied for risk estimation using dose-response models (DRM) of different surrogate coronaviruses (SARS-CoV-1, MERS-CoV) and the virus responsible for most infectious respiratory illnesses (i.e., influenza A H5N1) due to the unavailability of DRM for SARS-CoV-2. The ratio of infectious concentration to genomic copies of SARS-CoV-2 is unknown and also unavailable for other coronaviruses. Therefore, literature-based information on enteric viruses was used for formulating the ratio used for QMRA, although it is acknowledged that identifying this information for SARS-CoV-2 is a priority, and in the absence of information specific to SARS-CoV-2, another coronavirus would be a preferable surrogate to the enteric viruses used here. The calculated concentration of ingested SARS-CoV-2 ranged between 4.6 × 10⁻⁷ and 80.5 genomic copies/dip (one swim = 32 mL). The risk of infection (> 9 × 10⁻¹² to 5.8 × 10⁻¹) was found to be > 1/10,000 annual risk of infection. Moreover, the study revealed that the risk estimation was largely dependent on the value of the molecular concentration of SARS-CoV-2 (gc/mL). Overall immediate attention is required for obtaining information on the (i) ratio of infectious virus to genomic copies, (ii) DRM for SARS-CoV-2, and (iii) virus reduction rate after treatment in the WWTPs. The QMRA structure used in present findings is helpful in analyzing and prioritizing upcoming health risks due to swimming performed in contaminated rivers during the COVID-19 outbreak.
    Keywords COVID-19 infection ; Severe acute respiratory syndrome coronavirus ; Severe acute respiratory syndrome coronavirus 2 ; dose response ; genomics ; humans ; influenza ; ingestion ; microbiological risk assessment ; risk ; risk estimate ; rivers ; viruses ; wastewater treatment
    Language English
    Dates of publication 2022-01
    Size p. 7240-7253.
    Publishing place Springer Berlin Heidelberg
    Document type Article ; Online
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-021-16188-0
    Database NAL-Catalogue (AGRICOLA)

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  8. Article ; Online: Evaluation of recreational risks due to exposure of antibiotic-resistance bacteria from environmental water: A proposed framework.

    Tyagi, Neha / Kumar, Arun

    Journal of environmental management

    2020  Volume 279, Page(s) 111626

    Abstract: This research provides a framework for the human health risk assessment due to exposure of AR (antibiotic resistance) E. coli from recreational water (swimming activity). Literature-based epidemiological studies were used for f-value formulation (i.e., ... ...

    Abstract This research provides a framework for the human health risk assessment due to exposure of AR (antibiotic resistance) E. coli from recreational water (swimming activity). Literature-based epidemiological studies were used for f-value formulation (i.e., AR E. coli/total number of E. coli isolates) and the theoretical calculation of AR and non-AR E. coli concentrations. Risk was estimated using calculated values by considering four different dose-response (D-R) scenarios with known characteristics due to current lack of availability of D-R for AR bacteria. f-values ranged between 0.14 and 0.59 and the order of calculated theoretical values of maximum AR E. coli are as follows: ampicillin or amoxicillin (38 CFU/dip) > co-trimoxazole (19 CFU/dip) ~ tetracycline (18 CFU/dip) > ceftriaxone or cefotaxime or ceftazidime (10 CFU/dip) ~ ciprofloxacin or ofloxacin (9 CFU/dip). The risk of infection was considerably high for theoretical calculated concentration values regardless of the chosen D-R model (annual risk of infection (95th percentile) = 1, Spearman's rank correlation coefficient = -0.06 to 0.94), under the conditions studied. Further, AR levels of human gastrointestinal-tract were determined using literature-reported data in stool samples and indicated that the resistance level was very high in healthy human (range: 3.7 × 10
    MeSH term(s) Angiotensin Receptor Antagonists ; Angiotensin-Converting Enzyme Inhibitors ; Anti-Bacterial Agents/pharmacology ; Bacteria ; Drug Resistance, Bacterial ; Escherichia coli ; Humans ; Water
    Chemical Substances Angiotensin Receptor Antagonists ; Angiotensin-Converting Enzyme Inhibitors ; Anti-Bacterial Agents ; Water (059QF0KO0R)
    Language English
    Publishing date 2020-11-23
    Publishing country England
    Document type Journal Article
    ZDB-ID 184882-3
    ISSN 1095-8630 ; 0301-4797
    ISSN (online) 1095-8630
    ISSN 0301-4797
    DOI 10.1016/j.jenvman.2020.111626
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Understanding effect of interaction of nanoparticles and antibiotics on bacteria survival under aquatic conditions: Knowns and unknowns

    Tyagi, Neha / Kumar, Arun

    Environmental research. 2020 Feb., v. 181

    2020  

    Abstract: The review provides a comprehensive overview of the available state-of-the-art of nanoparticles (NPs) and antibiotics (ABs) occurrence and their fate in the natural aquatic settings by addressing different research questions and the challenges faced ... ...

    Abstract The review provides a comprehensive overview of the available state-of-the-art of nanoparticles (NPs) and antibiotics (ABs) occurrence and their fate in the natural aquatic settings by addressing different research questions and the challenges faced while addressing those questions. Firstly, understand the interaction of NPs and ABs with themselves in addition to other matrix components (presence of natural organic matter, bacteria, biofilms, other anthropogenic pollutants and metals from natural sources). Secondly, summarize the bactericidal activity of NP and AB due to reactive oxygen species (ROS) production. The complete information was gathered from database and analysed as per the conjectured questions under laboratory versus environmental-relevant conditions (1. Fate of NPs and ABs, and 2. Will the presence of NPs and ABs alone and their mixtures influence the ROS concentration and antibacterial activity), and proposed six reactions to describe the fate of NP and AB in natural aquatic settings. However, laboratory-based studies revealed that NP and AB fate largely depend on the ionic strength, organic matter content and pH of the matrix whereas field based information is missing about this. The former was performed at sterile conditions using sophisticated instruments and standard protocol as compared to latter and can't be replicated under natural aquatic settings due to lack of: (i) accurate environmental concentration of NPs and ABs, (ii) knowledge of bacterial type and their concentration, (iii) optimized protocol and tracking systems. The author's recommendation is to verify the proposed reactions experimentally by using the frequently found pairs of NPs and ABs in the natural aquatic settings. Further, ranked them on their decreasing order of toxicity and informed regulatory bodies for further action. Overall research is needed in the suggested directions to reduce uncertainty behind the impacts of NPs and ABs on the aquatic settings and their role in bactericidal activity.
    Keywords antibacterial properties ; antibiotics ; aseptic conditions ; bacteria ; biofilm ; databases ; ionic strength ; metals ; nanoparticles ; organic matter ; pH ; pollutants ; reactive oxygen species ; toxicity ; uncertainty
    Language English
    Dates of publication 2020-02
    Publishing place Elsevier Inc.
    Document type Article
    ZDB-ID 205699-9
    ISSN 1096-0953 ; 0013-9351
    ISSN (online) 1096-0953
    ISSN 0013-9351
    DOI 10.1016/j.envres.2019.108945
    Database NAL-Catalogue (AGRICOLA)

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  10. Article ; Online: Heavy metals contamination in sediments of Bharalu river, Guwahati, Assam, India: A tributary of river Brahmaputra.

    Bhuyan, Rajashree / Brahma, Pinki / Chabukdhara, Mayuri / Tyagi, Neha / Gupta, Sanjay Kumar / Malik, Tabarak

    PloS one

    2023  Volume 18, Issue 4, Page(s) e0283665

    Abstract: This study aimed to assess heavy metals in the surface sediments of the Bharalu river, India. Metal concentrations ranged from 6.65-54.6 mg/kg for Ni, 25.2-250.0 mg/kg for Zn, 83.3-139.1 mg/kg for Pb, and 11940.0-31250.0 mg/kg for Fe. The level of metal ... ...

    Abstract This study aimed to assess heavy metals in the surface sediments of the Bharalu river, India. Metal concentrations ranged from 6.65-54.6 mg/kg for Ni, 25.2-250.0 mg/kg for Zn, 83.3-139.1 mg/kg for Pb, and 11940.0-31250.0 mg/kg for Fe. The level of metal contamination was assessed using sediment quality guidelines, geo-accumulation index (Igeo), enrichment factor (EF), pollution Load Index (PLI),Nemerow's pollution index (PIN), and potential ecological risk index. Pb exceeded the sediment quality guidelines at all sites indicating a potential threat to the river ecosystem. (Igeo) and EF also showed moderate to severe enrichment for Pb. Potential ecological risk (RI) showed low risk in the sediments, and Pb is the major contributor to ecological risk. Overall, pollution indices revealed comparably higher contamination of the sediments in the downstream sites than in the upstream site. PCA and correlation matrix analysis indicated both anthropogenic and natural origins for metals. Among anthropogenic sources, urban discharges and waste dumping could be mainly attributed to metal contamination in the river sediments. These findings may aid in developing future river management methods explicitly aimed at tackling heavy metal pollution to prevent further damage to the river ecosystem.
    MeSH term(s) Ecosystem ; Water Pollutants, Chemical/analysis ; Lead/analysis ; Geologic Sediments/analysis ; Environmental Monitoring/methods ; Metals, Heavy/analysis ; India ; Risk Assessment ; China
    Chemical Substances Water Pollutants, Chemical ; Lead (2P299V784P) ; Metals, Heavy
    Language English
    Publishing date 2023-04-05
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0283665
    Database MEDical Literature Analysis and Retrieval System OnLINE

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