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Article ; Online: Total Synthesis of 6-Deoxy-l-talose Containing a Pentasaccharide Repeating Unit of

Bharali, Mrinmoy Manash / Santra, Abhishek

2023 Volume 88, Issue 13, Page(s) 8770–8780

Abstract: Herein, we report a concise synthetic approach for the first total synthesis of a pentasaccharide repeating unit ... ...

Abstract	Herein, we report a concise synthetic approach for the first total synthesis of a pentasaccharide repeating unit of
MeSH term(s)	Acinetobacter baumannii/chemistry ; Carbohydrate Sequence ; Polysaccharides/chemistry ; Oligosaccharides/chemistry ; Trisaccharides/chemistry ; Polysaccharides, Bacterial/chemistry
Chemical Substances	6-deoxytalose (7658-10-8) ; Polysaccharides ; Oligosaccharides ; Trisaccharides ; Polysaccharides, Bacterial
Language	English
Publishing date	2023-06-20
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	123490-0
ISSN	1520-6904 ; 0022-3263
ISSN (online)	1520-6904
ISSN	0022-3263
DOI	10.1021/acs.joc.3c00615
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Article ; Online: Prevalence of hypertension among individuals with diabetes and its determinants: evidences from the National Family Health Survey 2015-16, India.

Santra, Arpita / Mallick, Akash

Annals of human biology

2022 Volume 49, Issue 2, Page(s) 133–144

Abstract: Background: The incidence of diabetes mellitus (DM) has escalated in recent decades, and the risk of diabetes-related mortality has increased dramatically due to the co-existence of hypertension (HTN). DM and HTN, having similar aetiology and disease ... ...

Abstract	Background: The incidence of diabetes mellitus (DM) has escalated in recent decades, and the risk of diabetes-related mortality has increased dramatically due to the co-existence of hypertension (HTN). DM and HTN, having similar aetiology and disease mechanisms, are influenced by lifestyle factors and greatly contribute to critical health complications. Aim: This study attempted to explore the co-existence of DM-HTN and the potential determinants considering the rapid upsurge of both these diseases. Subjects and methods: National Family Health Survey data were used, which included 7092 adult diabetic individuals, to find out the prevalence rate of HTN in diabetic persons in India. Appropriate statistical analyses were performed to accomplish the study objectives. Results: Prevalence rate of HTN in diabetic individuals was approximately 37%. Higher body mass index (BMI) was associated with DM-HTN co-existence. In males, increased age, higher BMI, alcohol consumption, poorest wealth index, and non-smoking (tobacco) were the significant determinants of the co-existence of DM-HTN, while in females, they were increased age, higher BMI, and geographical region. Conclusions: This study unveiled the significance of healthy lifestyle maintenance and equitable health care services to prevent HTN among diabetics, along with promotion of the awareness and management of DM and HTN through appropriate pharmacological treatments.
MeSH term(s)	Adult ; Comorbidity ; Diabetes Mellitus/epidemiology ; Female ; Health Surveys ; Humans ; Hypertension/epidemiology ; Hypertension/etiology ; India/epidemiology ; Male ; Prevalence ; Risk Factors
Language	English
Publishing date	2022-05-31
Publishing country	England
Document type	Journal Article
ZDB-ID	186656-4
ISSN	1464-5033 ; 0301-4460
ISSN (online)	1464-5033
ISSN	0301-4460
DOI	10.1080/03014460.2022.2072525
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Article: Catalytic reduction of oxygen to water by non-heme iron complexes: exploring the effect of the secondary coordination sphere proton exchanging site.

Santra, Aakash / Das, Avijit / Kaur, Simarjeet / Jain, Priya / Ingole, Pravin P / Paria, Sayantan

Chemical science

2024 Volume 15, Issue 11, Page(s) 4095–4105

Abstract: In this study, we prepared non-heme ... ...

Abstract	In this study, we prepared non-heme Fe
Language	English
Publishing date	2024-02-13
Publishing country	England
Document type	Journal Article
ZDB-ID	2559110-1
ISSN	2041-6539 ; 2041-6520
ISSN (online)	2041-6539
ISSN	2041-6520
DOI	10.1039/d3sc06753j
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Article ; Online: Core-Shell Structure of Photopolymer-Grafted Polyurethane as a Controlled Drug Delivery Vehicle for Biomedical Application.

Santra, Amita / Prakash, Ravi / Maity, Swapan / Nilawar, Sagar / Chatterjee, Kaushik / Maiti, Pralay

ACS applied materials & interfaces

2024 Volume 16, Issue 14, Page(s) 17193–17207

Abstract: Functionalized ultraviolet photocurable bisphenol A-glycerolate dimethacrylates with tailorable size have been synthesized as the core, which have further been grafted using the diisocyanate chain end of polyurethane (PU) as the shell to create a core- ... ...

Abstract	Functionalized ultraviolet photocurable bisphenol A-glycerolate dimethacrylates with tailorable size have been synthesized as the core, which have further been grafted using the diisocyanate chain end of polyurethane (PU) as the shell to create a core-shell structure of tunable size for a controlled drug delivery vehicle. The core-shell structure has been elucidated through spectroscopic techniques like
MeSH term(s)	Polyurethanes/chemistry ; Drug Carriers/chemistry ; Drug Delivery Systems/methods ; Polymers/chemistry
Chemical Substances	Polyurethanes ; Drug Carriers ; Polymers
Language	English
Publishing date	2024-03-26
Publishing country	United States
Document type	Journal Article
ISSN	1944-8252
ISSN (online)	1944-8252
DOI	10.1021/acsami.3c19155
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Article ; Online: Deoxyfluorinated amidation and esterification of carboxylic acid by pyridinesulfonyl fluoride.

Neeliveettil, Anootha / Dey, Soumyadip / Nomula, Vishnu / Thakur, Swati / Giri, Debabrata / Santra, Abhishek / Sau, Abhijit

Chemical communications (Cambridge, England)

2024 Volume 60, Issue 36, Page(s) 4789–4792

Abstract: Amide bond synthesis is one of the most used reactions in medicinal chemistry. We report an amide bond formation reaction through deoxyfluorinated carboxylic acids under mild conditions using 2-pyridinesulfonyl fluoride. The reaction procedure has been ... ...

Abstract	Amide bond synthesis is one of the most used reactions in medicinal chemistry. We report an amide bond formation reaction through deoxyfluorinated carboxylic acids under mild conditions using 2-pyridinesulfonyl fluoride. The reaction procedure has been used in a one-pot synthesis of amides and esters
Language	English
Publishing date	2024-04-30
Publishing country	England
Document type	Journal Article
ZDB-ID	1472881-3
ISSN	1364-548X ; 1359-7345 ; 0009-241X
ISSN (online)	1364-548X
ISSN	1359-7345 ; 0009-241X
DOI	10.1039/d4cc00877d
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Article ; Online: Investigating impact of CORDEX-based predicted climatic and LCM-based LULC scenarios on hydrologic response of a semi-gauged Indian catchment.

Mitra, Shreyashi Santra / Kumar, Akhilesh / Santra, Abhisek / Routh, Shidharth

Environmental monitoring and assessment

2023 Volume 195, Issue 4, Page(s) 450

Abstract: The present study aims at documenting the impact of different climate and land use change scenarios on runoff in the Kangsabati River basin. While the study relies on India Meteorological Department (IMD), National Oceanic and Atmospheric Administration' ... ...

Abstract	The present study aims at documenting the impact of different climate and land use change scenarios on runoff in the Kangsabati River basin. While the study relies on India Meteorological Department (IMD), National Oceanic and Atmospheric Administration's Physical Sciences Laboratory (NOAA-PSL), and a multi-model ensemble of six driving models from Coordinated Regional Downscaling Experiment-Regional Climate Models (CORDEX RCM) for climate data input, it depends on IDRISI Selva's Land Change Modeller (LCM) and Soil and Water Assessment Tool (SWAT) model to generate projected land use land change maps and simulate its streamflow response, respectively. A total of four land use and land cover (LULC) scenarios, representing four projected land use change, were modelled across three climatic scenarios, called Representative Concentration Pathways (RCPs). With runoff being predominantly impacted more by climate change than LULC, volumetric runoff is expected to be 12-46% higher than the baseline period of 1982-2017. Conversely, while surface runoff is expected to decrease by 4-28% in lower parts of the basin, it will increase by 2-39% in the rest of it, depending on the subtle alterations in land use and climatic variability.
MeSH term(s)	Environmental Monitoring ; Soil ; Hydrology ; Forecasting ; Climate Change
Chemical Substances	Soil
Language	English
Publishing date	2023-03-08
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/s10661-022-10840-z
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Book ; Online: A derivation of the electric field inside MAPS detectors from beam-test data and limited TCAD simulations

Santra, Arka / Hod, Noam Tal

2022

Abstract: Solid semiconductor sensors are used as detectors in high-energy physics experiments, in medical applications, in space missions and elsewhere. Minimal knowledge of the electric field inside the elementary cells of these sensors is highly important for ... ...

Abstract	Solid semiconductor sensors are used as detectors in high-energy physics experiments, in medical applications, in space missions and elsewhere. Minimal knowledge of the electric field inside the elementary cells of these sensors is highly important for their performance understanding. The field governs the charge propagation processes and ultimately determines the size and quality of the electronic signal of the cell. Hence, the simulation of these sensors as detectors in different analyses relies strongly on the field knowledge. For a certain voltage applied to the cell, the field depends on the specifics of the device's growth and fabrication. The information about these is often commercially protected or otherwise very difficult to encode in state-of-the-art technology computer-aided-design (TCAD) software. In this work, we show that by taking the top-down approach, combining public beam-test data and a very limited public TCAD knowledge, we are able to effectively approximate the 3D electric field function in the pixel cell of one important and widely used example, namely the ALPIDE sensor, for simulating the charge propagation processes. Despite its broad usage worldwide, the ALPIDE field is not available to the community. We provide an effective field function, that adequately describes the sensor behaviour without trying to reconstruct further details about the device or the details behind its processing. We comment on the process by which the effective field function is derived with the help of the Allpix$^2$ software, and on how similar work can be performed for other devices, starting from the same grounds. Comment: 19 pages, 8 figures
Keywords	Physics - Instrumentation and Detectors
Subject code	621 ; 600
Publishing date	2022-09-07
Publishing country	us
Document type	Book ; Online
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Article ; Online: Organically modified layered magnesium silicates to improve rheology of reservoir drilling fluids.

Patel, Hasmukh A / Santra, Ashok

Scientific reports

2020 Volume 10, Issue 1, Page(s) 13851

Abstract: Petroleum well drilling fluids are one of the most significant constituents in the subterranean drilling processes to meet an increasing global demand for oil and gas. Drilling fluids experience exceptional wellbore conditions, e.g. high temperature and ... ...

Abstract	Petroleum well drilling fluids are one of the most significant constituents in the subterranean drilling processes to meet an increasing global demand for oil and gas. Drilling fluids experience exceptional wellbore conditions, e.g. high temperature and high pressure that adversely affect the rheology of these fluids. Gas and oil well drilling operations have to adjourn due to changes in fluid rheology, since the drilling fluids may lose their effectiveness to suspend heavy particles and to carry drilled cuttings to the surface. The rheological properties of drilling fluids can be controlled by employing viscosifiers that should have exceptional stability in downhole environments. Here, we have developed next-generation viscosifiers-organically modified magnesium silicates (MSils)-for reservoir drilling fluids where organic functionalities are directly linked through the Si-C bond, unlike the industry's traditional viscosifier, organoclay, that has electrostatic linkages. The successful formation of covalently-linked hexadecyl and phenyl functionalized magnesium silicates (MSil-C16 and MSil-Ph) were confirmed by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, and thermogravimetric analysis (TGA). Identical drilling fluid formulations were designed for comparison using MSils and a commercial viscosifier. The rheological properties of fluids were measured at ambient conditions as well as at high temperatures (up to 150 °C) and high pressure (70 MPa). Owing to strong covalent linkages, drilling fluids that were formulated with MSils showed a 19.3% increase in yield point (YP) and a 31% decrease in apparent viscosity (AV) at 150 °C under 70 MPa pressure, as compared to drilling fluids that were formulated with traditional organoclay. The higher yield point and lower apparent viscosity are known to facilitate and increased drilling rate of penetration of the fluids and an enhanced equivalent circulation density (ECD), the dynamic density condition, for efficient oil and gas wells drilling procedures.
Language	English
Publishing date	2020-08-17
Publishing country	England
Document type	Journal Article
ZDB-ID	2615211-3
ISSN	2045-2322 ; 2045-2322
ISSN (online)	2045-2322
ISSN	2045-2322
DOI	10.1038/s41598-020-70752-1
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Book ; Online: Rigid clusters in shear-thickening suspensions

Santra, Aritra / Orsi, Michel / Chakraborty, Bulbul / Morris, Jeffrey F.

a nonequilibrium critical transition

2024

Abstract: The onset and growth of rigid clusters in a two-dimensional (2D) suspension in shear flow are studied by numerical simulation. The suspension exhibits the lubricated-to-frictional rheology transition but is studied at stresses above the levels that cause ...

Abstract	The onset and growth of rigid clusters in a two-dimensional (2D) suspension in shear flow are studied by numerical simulation. The suspension exhibits the lubricated-to-frictional rheology transition but is studied at stresses above the levels that cause extreme shear thickening. At large solid area fraction, $\phi$, but below the jamming fraction, we find that there is critical $\phi_c$ beyond which the proportion of particles in rigid clusters grows sharply, as $f_{\rm rig} \sim (\phi-\phi_c)^{\beta}$ with $\beta=1/8$, and at which the fluctuations in the net rigidity grow sharply, with a susceptibility measure $\chi_{\rm rig} \sim \|\phi-\phi_c\|^{-\gamma}$ with $\gamma = 7/4$. By applying finite size scaling, the correlation length, arising from the correlation of rigid domains, is found to scale as $\xi \sim \|\phi-\phi_c\|^{-\nu}$ with $\nu = 1$. The system is thus found to exhibit criticality, with critical exponents consistent with the 2D Ising transition. This behavior occurs over a range of stresses, with $\phi_c$ increasing as the stress decreases, consistent with the known increase in jamming fraction with reduction of stress for shear-thickening suspensions.
Keywords	Condensed Matter - Soft Condensed Matter ; Condensed Matter - Statistical Mechanics
Subject code	612
Publishing date	2024-01-26
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Space-Time Drought Dynamics and Soil Erosion in Puruliya District of West Bengal, India: A Conceptual Design

Santra, Abhisek / Santra Mitra, Shreyashi

Journal of the Indian Society of Remote Sensing. 2020 Aug., v. 48, no. 8

2020

Abstract: This paper integrates drought and soil erosion problems of Puruliya district of West Bengal. The space-time dynamics of vegetative drought is assessed based on the mean monthly time-series MODIS data for the period of 2000–2013. The drought recurrence ... ...

Abstract	This paper integrates drought and soil erosion problems of Puruliya district of West Bengal. The space-time dynamics of vegetative drought is assessed based on the mean monthly time-series MODIS data for the period of 2000–2013. The drought recurrence ranges from 0 to 29 months, and the mean frequency was assessed to be 7.09 months for the entire period under deliberation. The potential soil disintegration of the district was estimated using the Revised Universal Soil Loss Equation in the geo-spatial environment. The locale has been arranged into six potential soil erosion classes ranging from low-to-severe risk depending upon the computed soil erosion amount. The mean soil erosion rate of the district was anticipated as 76.29 t ha⁻¹ year⁻¹. The erosion amount is high in gently sloping grounds covering mainly harvested agricultural fields and open fields. These areas contribute mostly the soil erosion in this district. It is found that in this area the slope length-steepness factor is the major erosion-controlling factor. About one-fourth of the total area comes under the threat of a very high-to-severe erosion zone. Also, it was observed that the drought condition of the district is strongly correlated with the soil moisture condition in the drought-affected months and the precipitation amount. The study likewise distinguished the conceivable interrelationship between the soil erosion problem and drought frequency for better monitoring and policy decision making. A considerable increasing trend is observed in mean soil erosion with increasing frequency of drought-affected months for the study period.
Keywords	Revised Universal Soil Loss Equation ; drought ; issues and policy ; risk ; soil erosion ; soil water ; space and time ; time series analysis ; India
Language	English
Dates of publication	2020-08
Size	p. 1191-1205.
Publishing place	Springer India
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	2439566-3
ISSN	0974-3006 ; 0255-660X
ISSN (online)	0974-3006
ISSN	0255-660X
DOI	10.1007/s12524-020-01147-y
Database	NAL-Catalogue (AGRICOLA)

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