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Article ; Online: A new synthetic route to Lindqvist type clusters [(n-Bu4N)x][M'M5O19] [when x = 2, M' = M = Mo or W; x = 3, M' = Mo, M = W] from metal carbonyl precursors [(CO)5ML] [M = Mo, W; L= CO, C(OMe)(Me)].

Thakur, Arunabha / Chakraborty, Amarnath / Ramkumar, V / Ghosh, Sundargopal

Dalton transactions (Cambridge, England : 2003)

2009 , Issue 36, Page(s) 7552–7558

Abstract: ... conditions from group VI metal carbonyls or Fischer carbene complexes, [(CO)5M=C(OMe)Me] (M = Mo, W ...

Abstract	Two fully oxidized [(n-Bu4N)2][Mo6O19], 7 and [(n-Bu4N)2][W6O19], 8 and one mixed-metal, mixed-valence one electron reduced [(n-Bu4N)3][MoW5O19], 9 cluster have been synthesized under biphasic reaction conditions from group VI metal carbonyls or Fischer carbene complexes, [(CO)5M=C(OMe)Me] (M = Mo, W) in yields of 73, 77 and 71% respectively. All the clusters have been characterized by IR, 1H and 13C NMR spectra, and crystal structure determinations. Additionally, the composition of 9 has also been supported by mass spectrometry (MALDI-TOF), inductively coupled plasma (ICP) and energy-dispersive X-ray (EDX) analysis. This novel and mild route offers distinct improvements over earlier methods of synthesis for Lindqvist type mixed-valence mixed-metal polyoxometalate cluster.
Language	English
Publishing date	2009-09-28
Publishing country	England
Document type	Journal Article
ZDB-ID	1472887-4
ISSN	1477-9234 ; 1364-5447 ; 0300-9246 ; 1477-9226
ISSN (online)	1477-9234 ; 1364-5447
ISSN	0300-9246 ; 1477-9226
DOI	10.1039/b908348k
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Altitudinal and aspect-driven variations in soil carbon storage potential in sub-tropical Himalayan forest ecosystem: assisting nature to combat climate change.

Kumar, Saurabh / Prabhakar, Mukesh / Bhardwaj, D R / Thakur, C L / Kumar, Jatin / Sharma, Prashant

Environmental monitoring and assessment

2024 Volume 196, Issue 2, Page(s) 126

Abstract: ... viz., 600-800 m (A ...

Abstract	Forest soils serve as the greatest sink of terrestrial carbon (C) and have a significant impact on worldwide or regional C cycling. By reducing emissions and enhancing the C storage in forests, the environmental monitoring function of a forest ecosystem may be ensured. The study focused on measuring the densities of major nutrients in soil to gain insight into the C and nitrogen dynamics of the Himalayan sub-tropical forest ecosystem of India besides supplementing the information about the C storage potential of these forest soils. The study examined the physico-chemical properties and nutrient densities across three altitudinal ranges viz., 600-800 m (A
MeSH term(s)	Carbon ; Climate Change ; Ecosystem ; Environmental Monitoring ; Forests ; Nitrogen ; Soil
Chemical Substances	Carbon (7440-44-0) ; Nitrogen (N762921K75) ; Soil
Language	English
Publishing date	2024-01-09
Publishing country	Netherlands
Document type	Journal Article
ZDB-ID	782621-7
ISSN	1573-2959 ; 0167-6369
ISSN (online)	1573-2959
ISSN	0167-6369
DOI	10.1007/s10661-024-12297-8
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Article ; Online: Occurrence and behavior of uranium and thorium series radionuclides in the Permian shale hydraulic fracturing wastes.

Thakur, Punam / Ward, Anderson L / Schaub, Tanner M

Environmental science and pollution research international

2022 Volume 29, Issue 28, Page(s) 43058–43071

Abstract: ... in unconventional drilling wastes, varied from 19.1 ± 1.2 to 35.9 ± 3.2 Bq/L for ...

Abstract	Over the last decade, there has been a rapid growth in the use of hydraulic fracturing (fracking) to recover unconventional oil and gas in the Permian Basin of southeastern New Mexico (NM) and western Texas. Fracking generates enormous quantities of wastes that contain technologically enhanced naturally occurring radioactive materials (TENORM), which poses risks to human health and the environment because of the relatively high doses of radioactivity. However, very little is known about the chemical composition and radioactivity levels of Permian Basin fracking wastes. Here, we report chemical as well as radiochemical compositions of hydraulic fracking wastes from the Permian Basin. Radium, the major TENORM of interest in unconventional drilling wastes, varied from 19.1 ± 1.2 to 35.9 ± 3.2 Bq/L for
MeSH term(s)	Humans ; Hydraulic Fracking ; Minerals ; Natural Gas ; Radioisotopes ; Radium/analysis ; Silicon Dioxide ; Thorium ; Uranium/analysis
Chemical Substances	Minerals ; Natural Gas ; Radioisotopes ; Uranium (4OC371KSTK) ; Thorium (60YU5MIG9W) ; Silicon Dioxide (7631-86-9) ; Radium (W90AYD6R3Q)
Language	English
Publishing date	2022-01-29
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-021-18022-z
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Article ; Online: Skin appendageal tumors: A 1 year data from a tertiary care institute.

Thakur, Mamta / Vijayamohanan, Lekshmi / Asotra, Sarita

Journal of cancer research and therapeutics

2023 Volume 19, Issue Suppl 2, Page(s) S770–S774

Abstract: Background: Skin appendageal tumors (SAT) are a rare group of tumors that are classified according to their line of appendageal differentiation along eccrine, apocrine, follicular, and sebaceous lines. However, they are relatively uncommon and create ... ...

Abstract	Background: Skin appendageal tumors (SAT) are a rare group of tumors that are classified according to their line of appendageal differentiation along eccrine, apocrine, follicular, and sebaceous lines. However, they are relatively uncommon and create diagnostic difficulties for the pathologist. Recognition of malignant transformation adds to the importance of an accurate diagnosis. A paucity of clinicopathological data from the Himalayan region of India, in particular, prompted the conduct of this study. Aim: To study the clinical and histopathological spectrum of SAT during a period of 1 year received at our hospital. Materials and methods: A retrospective study was carried out at the Pathology department of our hospital. All relevant clinical characteristics were noted in addition to the histopathological features. Slides stained with both hematoxylin and eosin and special stains where necessary were used to supplement the diagnoses. Results: A total of 17 cases were diagnosed in 1 year (January 2021 to December 2021) at our institute. The predominant age group was 40-59 years. Females outnumbered males, with a male: female ratio of 0.8:1. The most common location of tumors was in the head and neck (90.90%). The majority of cases were benign (90.90%). The majority of tumors were of follicular differentiation (54.55%). We found one malignant tumor of sebaceous differentiation. Conclusion: The clinical presentation is remarkably similar to most SAT. In our study, we found that majority of tumors were benign and located in the head and neck. The importance of an accurate histopathological diagnosis is essential in these tumors to diagnose the malignant counterparts and differentiate them from more common skin tumors with different prognoses.
MeSH term(s)	Humans ; Male ; Female ; Adult ; Middle Aged ; Retrospective Studies ; Tertiary Healthcare ; Skin Neoplasms/diagnosis ; Skin Neoplasms/epidemiology ; Skin Neoplasms/pathology ; Epithelial Cells/pathology ; Head
Language	English
Publishing date	2023-09-21
Publishing country	India
Document type	Journal Article
ZDB-ID	2187633-2
ISSN	1998-4138 ; 0973-1482
ISSN (online)	1998-4138
ISSN	0973-1482
DOI	10.4103/jcrt.jcrt_174_22
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Article: Occurrence and behavior of uranium and thorium series radionuclides in the Permian shale hydraulic fracturing wastes

Thakur, Punam / Ward, Anderson L. / Schaub, Tanner M.

Environmental science and pollution research. 2022 June, v. 29, no. 28

2022

Abstract: ... in unconventional drilling wastes, varied from 19.1 ± 1.2 to 35.9 ± 3.2 Bq/L for ²²⁶Ra, 10.3 ± 0.5 to 21.5 ± 1.2 Bq ... L for ²²⁸Ra, and 2.0 ± 0.05 to 3.7 ± 0.07 Bq/L for ²²⁴Ra. In addition to elevated concentrations ... such as Na⁺ (31,856–43,000 mg/L), Ca²⁺ (668–4123 mg/L), Mg²⁺ (202–2430 mg/L), K⁺ (148–780 mg/L), Sr²⁺ (101–260 ...

Abstract	Over the last decade, there has been a rapid growth in the use of hydraulic fracturing (fracking) to recover unconventional oil and gas in the Permian Basin of southeastern New Mexico (NM) and western Texas. Fracking generates enormous quantities of wastes that contain technologically enhanced naturally occurring radioactive materials (TENORM), which poses risks to human health and the environment because of the relatively high doses of radioactivity. However, very little is known about the chemical composition and radioactivity levels of Permian Basin fracking wastes. Here, we report chemical as well as radiochemical compositions of hydraulic fracking wastes from the Permian Basin. Radium, the major TENORM of interest in unconventional drilling wastes, varied from 19.1 ± 1.2 to 35.9 ± 3.2 Bq/L for ²²⁶Ra, 10.3 ± 0.5 to 21.5 ± 1.2 Bq/L for ²²⁸Ra, and 2.0 ± 0.05 to 3.7 ± 0.07 Bq/L for ²²⁴Ra. In addition to elevated concentrations of radium, these wastewaters also contain elevated concentrations of dissolved salts and divalent cations such as Na⁺ (31,856–43,000 mg/L), Ca²⁺ (668–4123 mg/L), Mg²⁺ (202–2430 mg/L), K⁺ (148–780 mg/L), Sr²⁺ (101–260 mg/L), Cl⁻ (5160–66,700 mg/L), SO₄²⁻ (291–1980 mg/L), Br⁻ (315–596 mg/L), SiO₂ (20–32 mg/L), and high total dissolved solid (TDS) of 5000–173,000 mg/L compared to background waters. These elevated levels are of radiological significance and represent a major source of Ra in the environment. The recent discovery of large deposits of recoverable oil and gas in the Permian Basin will lead to more fracking, TENORM generation, and radium releases to the environment. This paper evaluates the potential radiation risks associated with TENORM wastes generated by the oil and gas recovery industry in the Permian Basin.
Keywords	Permian period ; basins ; calcium ; chemical composition ; human health ; hydraulic fracturing ; industry ; oils ; pollution ; radioactivity ; radium ; research ; shale ; thorium ; uranium ; wastewater ; New Mexico ; Texas
Language	English
Dates of publication	2022-06
Size	p. 43058-43071.
Publishing place	Springer Berlin Heidelberg
Document type	Article
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-021-18022-z
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: A nanometric window on fullerene formation in the interstellar medium: Insights from molecular dynamics studies.

Thakur, Abhishek Kumar / Muralidharan, Krishna / Zega, Thomas J / Ziurys, L M

The Journal of chemical physics

2022 Volume 156, Issue 15, Page(s) 154704

Abstract: Understanding the fundamental mechanisms that underlie the synthesis of fullerene molecules in the interstellar medium (ISM) and in the environments of astrophysical objects is an open question. In this regard, using classical molecular dynamics, we ... ...

Abstract	Understanding the fundamental mechanisms that underlie the synthesis of fullerene molecules in the interstellar medium (ISM) and in the environments of astrophysical objects is an open question. In this regard, using classical molecular dynamics, we demonstrate the possibility of in situ formation of fullerene molecules, such as C
Language	English
Publishing date	2022-04-22
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	10.1063/5.0069166
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Article ; Online: Phytotherapeutics in Cancer: From Potential Drug Candidates to Clinical Translation.

Grover, Parul / Thakur, Kulbhushan / Bhardwaj, Monika / Mehta, Lovekesh / Raina, Soom Nath / Rajpal, Vijay Rani

Current topics in medicinal chemistry

2024

Abstract: Annually, a significant number of individuals succumb to cancer, an anomalous cellular condition characterized by uncontrolled cellular proliferation and the emergence of highly perilous tumors. Identifying underlying molecular mechanism(s) driving ... ...

Abstract	Annually, a significant number of individuals succumb to cancer, an anomalous cellular condition characterized by uncontrolled cellular proliferation and the emergence of highly perilous tumors. Identifying underlying molecular mechanism(s) driving disease progression has led to various inventive therapeutic approaches, many of which are presently under pre-clinical and/or clinical trials. Over the recent years, numerous alternative strategies for addressing cancer have also been proposed and put into practice. This article delineates the modern therapeutic drugs employed in cancer treatment and their associated toxicity. Due to inherent drug toxicity associated with most modern treatments, demand rises for alternative therapies and phytochemicals with minimal side effects and proven efficacy against cancer. Analogs of taxol, Vinca alkaloids like vincristine and vinblastine, and podophyllotoxin represent a few illustrative examples in this context. The phytochemicals often work by modifying the activity of molecular pathways that are thought to be involved in the onset and progression of cancer. The principal objective of this study is to provide an overview of our current understanding regarding the pharmacologic effects and molecular targets of the active compounds found in natural products for cancer treatment and collate information about the recent advancements in this realm. The authors' interest in advancing the field of phytochemical research stems from both the potential of these compounds for use as drugs as well as their scientific validity. Accordingly, the significance of herbal formulations is underscored, shedding light on anticancer phytochemicals that are sought after at both preclinical and clinical levels, with discussion on the opportunities and challenges in pre-clinical and clinical cancer studies.
Language	English
Publishing date	2024-01-25
Publishing country	United Arab Emirates
Document type	Journal Article
ZDB-ID	2064823-6
ISSN	1873-4294 ; 1568-0266
ISSN (online)	1873-4294
ISSN	1568-0266
DOI	10.2174/0115680266282518231231075311
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Article ; Online: Inverse resolution of spatially varying diffusion coefficient using Physics-Informed neural networks.

Thakur, Sukirt / Esmaili, Ehsan / Libring, Sarah / Solorio, Luis / Ardekani, Arezoo M

ArXiv

2024

Abstract: Resolving the diffusion coefficient is a key element in many biological and engineering systems, including pharmacological drug transport and fluid mechanics analyses. Additionally, these systems often have spatial variation in the diffusion coefficient ... ...

Abstract	Resolving the diffusion coefficient is a key element in many biological and engineering systems, including pharmacological drug transport and fluid mechanics analyses. Additionally, these systems often have spatial variation in the diffusion coefficient which must be determined, such as for injectable drug-eluting implants into heterogeneous tissues. Unfortunately, obtaining the diffusion coefficient from images in such cases is an inverse problem with only discrete data points. The development of a robust method that can work with such noisy and ill-posed datasets to accurately determine spatially-varying diffusion coefficients is of great value across a large range of disciplines. Here, we developed an inverse solver that uses physics informed neural networks (PINNs) to calculate spatially-varying diffusion coefficients from numerical and experimental image data in varying biological and engineering applications. The residual of the transient diffusion equation for a concentration field is minimized to find the diffusion coefficient. The robustness of the method as an inverse solver was tested using both numerical and experimental datasets. The predictions show good agreement with both the numerical and experimental benchmarks; an error of less than 6.31% was obtained against all numerical benchmarks, while the diffusion coefficient calculated in experimental datasets matches the appropriate ranges of other reported literature values. Our work demonstrates the potential of using PINNs to resolve spatially-varying diffusion coefficients, which may aid a wide-range of applications, such as enabling better-designed drug-eluting implants for regenerative medicine or oncology fields.
Language	English
Publishing date	2024-03-06
Publishing country	United States
Document type	Preprint
ISSN	2331-8422
ISSN (online)	2331-8422
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Article ; Online: Mediational pathways exploring the link between adverse childhood experiences and physical health in a transgender population.

Strenth, Chance R / Smith, Margaret / Gonzalez, Leo / Grant, Abigail / Thakur, Bhaskar / Levy Kamugisha, Emily I

Child abuse & neglect

2024 Volume 149, Page(s) 106678

Abstract: Background: Adverse childhood experiences (ACEs) consist of instances of abuse, neglect, or household dysfunction occurring before adulthood. Prevalence rates of ACEs are higher among specific populations, including gender minorities. In addition to ... ...

Abstract	Background: Adverse childhood experiences (ACEs) consist of instances of abuse, neglect, or household dysfunction occurring before adulthood. Prevalence rates of ACEs are higher among specific populations, including gender minorities. In addition to ACEs, transgender individuals (TG) face many personal, social, and structural factors that have the potential to negatively impact their physical health. Objective: This study examines exploratory mediational pathways between ACEs and two health outcomes (i.e., general health and days physically ill) in TG. Mediators include everyday discrimination, social support, gender non-affirmation, and mental distress. Methods: Cross-sectional data from the U.S. Transgender Population Health Survey (TransPop) was used to conduct a serial/parallel mediation analysis. The TransPop survey included a total of 274 TG. Results: For both outcome variables, the same three indirect pathways were significant. First, ACEs were associated with increased mental distress, which was associated with a decrease in general health and an increase in days physically ill. Second, ACEs were associated with increased discrimination, which was associated with increased mental distress, and this was associated with a decrease in general health and an increase in days physically ill. Finally, ACEs were associated with discrimination, which was associated with increased gender non-affirmation which was associated with increased mental distress, and this was associated with a decrease in general health and an increase in days physically ill. Conclusion: Interventions focused on reducing discrimination, gender non-affirmation, and poor mental health may be vital to improving the health of TG and to mitigating the indirect role of ACEs on TG health.
MeSH term(s)	Humans ; Child ; Adult ; Adverse Childhood Experiences ; Transgender Persons ; Cross-Sectional Studies ; Child Abuse/psychology ; Health Surveys
Language	English
Publishing date	2024-02-02
Publishing country	England
Document type	Journal Article
ZDB-ID	799143-5
ISSN	1873-7757 ; 0145-2134
ISSN (online)	1873-7757
ISSN	0145-2134
DOI	10.1016/j.chiabu.2024.106678
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Article ; Online: Genetic diversity and principal component analysis in cultivated rice (Oryza sativa) varieties of Assam

KANGKANA THAKUR / M K SARMA

The Indian Journal of Agricultural Sciences, Vol 93, Iss

2023 Volume 2

Abstract: Rice (Oryza sativa L.) is the pre-eminent cereal crop of Assam in term of production and cultivable ...

Abstract	Rice (Oryza sativa L.) is the pre-eminent cereal crop of Assam in term of production and cultivable area. The measurement of genetic diversity is crucial to pick up the appropriate genotypes in a crop improvement programme. Identification of traits contributing towards genetic diversity in a given population can help in formulating effective selection criteria. This study was carried out in 64 indigenous rice genotypes collected from North Bank Plains and Upper Brahmaputra valley zones of Assam during rainy (kharif) seasons of 2021 and 2022. Based on the yield attributing characters, the cultivars were categorized into 8 clusters. Cluster evaluation showed that cluster II and V had farthest distance from cluster V (431.18), followed by cluster I and II (377.62). The study on the Principal component analysis showed the traits, days to 50% flowering (DF), days to maturity (DM), filled grains per panicle (FG), biological yield (BY) and harvest index (HI) had maximum contribution towards the total variability. The genotypes from the diverse clusters having desirable per se performance could be selected for inclusion as parents in hybridization programme. Identification of component traits through the principal component analysis will help in formulating efficient selection criteria for further genetic improvement of rice.
Keywords	Assam ; Cultivated rice ; Genetic diversity ; PCA ; Agriculture ; S
Subject code	580
Language	English
Publishing date	2023-02-01T00:00:00Z
Publisher	Indian Council of Agricultural Research
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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