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1. Impact of UV-C irradiation on solubility of Osborne protein fractions in wheat flour

Author:
Kumar, Amit,   et al.   ; Nayak, Rojalin; Purohit, Soumya Ranjan; Rao, Pavuluri Srinivasa;     Show all 4 Authors
Source:
Food hydrocolloids 2021 v.110 pp. 105845
ISSN:
0268-005X
Subject:
Fourier transform infrared spectroscopy; Triticum aestivum; baking; exposure duration; hydrocolloids; irradiation; moieties; polyacrylamide gel electrophoresis; proteins; solubility; ultraviolet radiation; viscometry; viscosity; wheat; wheat flour
Abstract:
... Protein-protein and protein-starch interactions in the wheat flour decide its suitability for the baking process and can be modified by several physicochemical methods. The present study was undertaken to confirm the protein modification in wheat flour irradiated with ultraviolet (UV) radiation up to the maximum dose of 35 J/cm²/g of flour. Whole wheat (Triticum aestivum) flour samples of two vari ...
DOI:
10.1016/j.foodhyd.2020.105845

2. Determination of loss on ignition test conditions for nonmetal fraction from processed waste printed circuit boards

Author:
Kumar, Amit,   et al.   ; Holuszko, Maria E.; Janke, Travis;     Show all 3 Authors
Source:
Resources, conservation, and recycling 2020 v.163 pp. 105105
ISSN:
0921-3449
Subject:
electronic equipment; electronic wastes; grinding; organic matter; recycling; temperature
Abstract:
... Printed circuit boards (PCB) are the most important and valuable building block of electronic equipment. This metallic fraction present in the PCB is one of the major economic drivers for its recycling. However, the separated nonmetal fraction (NMF) that accounts for approximately 70% of the total weight is usually sent to the landfills.Recently, physical NMF recycling has gained much attention, a ...
DOI:
10.1016/j.resconrec.2020.105105

3. Remote Sensing approach to evaluate anthropogenic influences on Forest Cover of Palamau Tiger Reserve, Eastern India

Author:
Kumar, Amit,   et al.   ; Kumari, Binita; Pandey, Arvind Chandra;     Show all 3 Authors
Source:
Ecological processes 2020 v.9 no.1 pp. 17
ISSN:
2192-1709
Subject:
Internet; Landsat; anthropogenic activities; forest damage; forest management; forest reserves; human population; human settlements; population density; remote sensing; tropical forests; India
Abstract:
... BACKGROUND: Tropical forests have been experiencing remarkable rates of transformation over the past century as they are getting degraded or decimated to a great extent by anthropogenic activities. This study aims at investigating the long-term forest cover transformation in Palamau Tiger Reserve (PTR), Jharkhand, India, using Landsat TM, ETM⁺, and OLI satellite images during 1975–2015. The forest ...
DOI:
10.1186/s13717-020-0219-z

4. Greenhouse gas emission abatement potential and associated costs of integrating renewable and low carbon energy technologies into the Canadian oil sands

Author:
Kumar, Amit,   et al.   ; Janzen, Ryan; Davis, Matthew;     Show all 3 Authors
Source:
Journal of cleaner production 2020 v.272 pp. 122820
ISSN:
0959-6526
Subject:
bioenergy; carbon; cost effectiveness; electricity generation; geothermal energy; greenhouse gas emissions; greenhouse gases; industry; issues and policy; lipid content; markets; models; oil sands; solar energy; sustainable technology; water power; wind power; Canada
Abstract:
... The purpose of this research is to evaluate the greenhouse gas reduction potential and associated costs of integrating renewable energy technologies into Canada’s oil sands . There is very limited analysis in the literature focused on the integration of renewable technology options in oil sands processes. This research addresses the gap by developing a novel framework that applies market penetrati ...
DOI:
10.1016/j.jclepro.2020.122820

5. Carbon nanotube- and graphene-reinforced multiphase polymeric composites: review on their properties and applications

Author:
Kumar, Amit,   et al.   ; Sharma, Kamal; Dixit, Amit Rai;     Show all 3 Authors
Source:
Journal of materials science 2020 v.55 no.7 pp. 2682-2724
ISSN:
0022-2461
Subject:
carbon nanotubes; composite polymers; graphene; thermal properties
Abstract:
... In this review, recent progress in the mechanical, thermal and interfacial properties of graphene/CNT multiphase polymer composites is examined. Progress in the mechanical and thermal properties of CNT (1D) and graphene (2D) nanostructure materials is also reviewed and compared. Furthermore, this review highlights the improvements in the mechanical, thermal and interfacial properties of two- and t ...
DOI:
10.1007/s10853-019-04196-y

6. Pd(II)-Catalyzed One-Pot Multiple C–C Bond Formation: En Route Synthesis of Succinimide-Fused Unsymmetrical 9,10-Dihydrophenanthrenes from Aryl Iodides and Maleimides

Author:
Kumar, Amit,   et al.   ; Baghel, Akanksha Singh; Jaiswal, Yogesh;     Show all 3 Authors
Source:
Organic letters 2020 v.22 no.5 pp. 1908-1913
ISSN:
1523-7052
Subject:
carbon-hydrogen bond activation; catalytic activity; chemical bonding; chemical reactions; moieties; organoiodine compounds; palladium; regioselectivity
Abstract:
... An expeditious approach has been developed for the synthesis of succinimide-fused unsymmetrical 9,10-dihydrophenanthrenes from simple aryl iodides and maleimides. The developed transformation, overall proceeding with high regioselectivity via a cascade approach through palladium(II)-catalyzed Micheal-type addition/C–H activation/intramolecular cross-dehydrogenative coupling (ICDC)/C–H activation, ...
DOI:
10.1021/acs.orglett.0c00255

7. Key factors affecting greenhouse gas emissions in the Canadian industrial sector: A decomposition analysis

Author:
Kumar, Amit,   et al.   ; Talaei, Alireza; Gemechu, Eskinder;     Show all 3 Authors
Source:
Journal of cleaner production 2020 v.246 pp. 119026
ISSN:
0959-6526
Subject:
alternative fuels; climate change; economic factors; greenhouse gas emissions; greenhouse gases; mining; oil sands; pollution control; process energy; Canada
Abstract:
... The industrial sector, accounting for 30% of global greenhouse gas (GHG) emissions, is among the key drivers of human-induced climate change impacts. Given this volume of emissions, the sector could play a critical role in mitigating climate change. Canada is among the top 10 global GHG emitters and its industrial sector is responsible for more than 39% of national emissions. GHG emissions from th ...
DOI:
10.1016/j.jclepro.2019.119026

8. Assessment of greenhouse gas mitigation options for the iron, gold, and potash mining sectors

Author:
Kumar, Amit,   et al.   ; Kumar Katta, Anil; Davis, Matthew;     Show all 3 Authors
Source:
Journal of cleaner production 2020 v.245 pp. 118718
ISSN:
0959-6526
Subject:
carbon dioxide; cost benefit analysis; global warming; gold; greenhouse gas emissions; greenhouse gases; grinding; iron; issues and policy; mining; models; pollution control; trucks; Canada
Abstract:
... The objective of this study is to investigate greenhouse gas mitigation pathways for the iron, gold, and potash mining sectors in Canada. These sectors have not widely accepted the available cleaner production strategies and so there is potential to reduce greenhouse gas emissions. It is important to fully realize this potential as soon as possible to support efforts to limit global warming. We co ...
DOI:
10.1016/j.jclepro.2019.118718

9. Visible-Light-Mediated β-C(sp³)–H Amination of Glycosylimidates: En Route to Oxazoline-Fused/Spiro Nonclassical Bicyclic Sugars

Author:
Kumar, Amit,   et al.   ; Shaw, Mukta;     Show all 2 Author
Source:
Organic letters 2019 v.21 no.9 pp. 3108-3113
ISSN:
1523-7052
Subject:
amination; chemical bonding; diastereoselective synthesis; glycosylation; light; moieties; organic compounds; regioselectivity; sugars
Abstract:
... A straightforward route has been developed for the diastereoselective synthesis of nonclassical conformationally constrained oxazoline-fused and spiro bicyclic sugars bearing a quaternary center via selective β-C–H amination of appropriately positioned glycosylimidates. The desired transformation proceeds via the generation of imidate N-radicals under visible-light conditions followed regioselecti ...
DOI:
10.1021/acs.orglett.9b00763

10. Efficient designs of double-pass curved solar air heaters

Author:
Kumar, Amit,   et al.   ; Akshayveer,; Singh, Ajeet Pratap; Singh, O.P.;     Show all 4 Authors
Source:
Renewable energy 2020 v.160 pp. 1105-1118
ISSN:
0960-1481
Subject:
Reynolds number; air temperature; friction; glass; mathematical models; renewable energy sources; roughness; solar heaters
Abstract:
... Recent research has shown that flat plate double-pass solar air heaters (DPSAH) exhibit higher thermal performance compared to conventional flat plate single-pass solar air heaters (SPSAH). However, scientific literature on design and performance evaluation of a curved DPSAH is scarce. In this paper, we systematically investigated various designs of DPSAH and reported its performance characteristi ...
DOI:
10.1016/j.renene.2020.06.115

11. Pathogenesis related proteins: A defensin for plants but an allergen for humans

Author:
Kumar, Amit,   et al.   ; Arora, Rahul; Singh, Indrakant Kumar; Singh, Archana;     Show all 4 Authors
Source:
International journal of biological macromolecules 2020 v.157 pp. 659-672
ISSN:
0141-8130
Subject:
B-lymphocytes; abiotic stress; allergenicity; allergens; biotic stress; computer simulation; crystal structure; epitopes; fruits; humans; immunoglobulin E; leaves; pathogenesis; pathogenesis-related proteins; pollen; prediction
Abstract:
... Pathogenesis related (PR) proteins are defensins expressed upon biotic and abiotic stress by plants. They are also synthesized in specific plant parts such as root, stem, leaves, pollen grains and fruits. According to the current classification, there are 19 different classes of PR-Proteins, 8 out of 19 are proven to exhibit allergic reactions in human. Here, we carried out the allergenicity poten ...
DOI:
10.1016/j.ijbiomac.2019.11.223

12. Manganese catalyzed selective hydrogenation of cyclic imides to diols and amines

Author:
Kumar, Amit,   et al.   ; Das, Uttam Kumar; Janes, Trevor; Milstein, David;     Show all 4 Authors
Source:
Green chemistry 2020 v.22 no.10 pp. 3079-3082
ISSN:
1463-9270
Subject:
amines; catalytic activity; glycols; green chemistry; hydrogenation; imides; manganese
Abstract:
... Herein we report the selective hydrogenation of cyclic imides to diols and amines, homogeneously catalyzed for the first time by a complex of an earth-abundant metal, a manganese pincer complex. A plausible catalytic cycle is proposed based on informative mechanistic experiments. ...
DOI:
10.1039/d0gc00570c

13. Circulation of orf viruses containing the NZ7-like vascular endothelial growth factor (VEGF-E) gene type in India

Author:
Kumar, Amit,   et al.   ; Karki, Monu; Arya, Sargam; Venkatesan, Gnanavel;     Show all 4 Authors
Source:
Virus research 2020 v.281 pp. 197908
ISSN:
0168-1702
Subject:
Orf virus; cysteine; genes; models; phylogeny; sequence homology; small ruminants; vascular endothelial growth factors; virulence; viruses; China; India
Abstract:
... Orf, a poxviral skin infection of small ruminants is caused by orf virus (ORFV) of the genus Parapoxvirus of the Poxviridae family. Vascular endothelial growth factor (VEGF) is an important virulence factor that is responsible for proliferative lesions in parapoxviral infections. VEGF gene shows high intra- and inter-species variability. Two variants of VEGF have been described globally in ORFV, v ...
DOI:
10.1016/j.virusres.2020.197908

14. Methane production and estimation from livestock husbandry: A mechanistic understanding and emerging mitigation options

Author:
Kumar, Amit,   et al.   ; Kumari, Shilpi; Fagodiya, R.K.; Hiloidhari, Moonmoon; Dahiya, R.P.;     Show all 5 Authors
Source:
The Science of the total environment 2020 v.709 pp. 136135
ISSN:
0048-9697
Subject:
breeding; carbon markets; diet; economic incentives; farmers; greenhouse gas emissions; issues and policy; livestock; livestock and meat industry; livestock husbandry; methane; methane production
Abstract:
... Globally, livestock is an important contributor to methane (CH₄) emissions. This paper reviewed the various CH₄ measurement and estimation techniques and mitigation approaches for the livestock sector. Two approaches for enteric livestock CH₄ emission estimation are the top-down and bottom-up. The combination of both could further improve our understanding of enteric CH₄ emission and possible miti ...
DOI:
10.1016/j.scitotenv.2019.136135

15. Development of multigrain extruded flakes and their sensory analysis using fuzzy logic

Author:
Kumar, Amit,   et al.   ; Rani, Poonam; Purohit, Soumya Ranjan; Rao, Pavuluri Srinivasa;     Show all 4 Authors
Source:
Journal of food measurement & characterization 2020 v.14 no.1 pp. 411-424
ISSN:
2193-4126
Subject:
Fourier transform infrared spectroscopy; bioactive properties; black gram; burning; extrusion; flaking; fuzzy logic; linseed; moieties; rice flour; roasting; sensory evaluation; temperature; thermal degradation; water content
Abstract:
... Present research involves the development of nutritious multigrain flakes from rice flour, black gram flour and flaxseed flour mixture and using extrusion, flaking followed by microwave roasting. The effect of feed moisture content, [25–35% (wb)] and extrusion process variables barrel temperature (60–80 °C) and screw speed (250–300 rpm) on physicochemical and bioactive properties of extruded beads ...
DOI:
10.1007/s11694-019-00303-4

16. Extending sensitivity analysis using regression to effectively disseminate life cycle assessment results

Author:
Kumar, Amit,   et al.   ; Di Lullo, Giovanni; Gemechu, Eskinder; Oni, Abayomi Olufemi;     Show all 4 Authors
Source:
The international journal of life cycle assessment 2020 v.25 no.2 pp. 222-239
ISSN:
0948-3349
Subject:
carbon dioxide; equations; greenhouse gas emissions; greenhouse gases; issues and policy; life cycle assessment; markets; models; oil sands; petroleum; regression analysis; uncertainty
Abstract:
... PURPOSE: Bottom-up–based life cycle assessment (LCA) approaches are used to assess the greenhouse gas emissions of various products such as transportation fuels. Bottom-up spreadsheet–based models include numerous calculations and assumed values that are uncertain. Currently, most LCAs provide point estimates with a simple one-at-a-time sensitivity analysis, which provides limited insight into how ...
DOI:
10.1007/s11367-019-01674-y

17. Phyto-genotoxicity of arsenic contaminated soil from Lakhimpur Kheri, India on Vicia faba L.

Author:
Kumar, Amit,   et al.   ; Gupta, Kiran; Srivastava, Alka; Srivastava, Sudhakar;     Show all 4 Authors
Source:
Chemosphere 2020 v.241 pp. 125063
ISSN:
0045-6535
Subject:
Vicia faba; arsenic; bulk density; chromosome aberrations; genotoxicity; hydrogen peroxide; malondialdehyde; meristems; metabolites; mitosis; moieties; nitrogen; nutrient availability; phosphorus; phytotoxicity; polluted soils; porosity; potassium; roots; shoots; soil pH; India
Abstract:
... The present experiment was designed to evaluate physico-chemical characteristics and phyto-genotoxicity of arsenic (As) contaminated soil collected from different sites of Lakhimpur, Uttar Pradesh (UP), India by employing Vicia faba L. The analyses included various biochemical as well as cyto-genotoxicity assays. The results showed that soil pH was slightly acidic to neutral in nature. The bulk de ...
DOI:
10.1016/j.chemosphere.2019.125063

18. One-Pot Synthesis of Orange-Red Fluorescent Dimeric 2H-Pyrrolo[2,3-c]isoquinoline-2,5(3H)-diones from Benzamides and Maleimides via Ru(II)-Catalyzed Sequential C–C/C–N/C–C Bond Formation

Author:
Kumar, Amit,   et al.   ; Jaiswal, Yogesh; Mandal, Saptarshi; Das, Prolay;     Show all 4 Authors
Source:
Organic letters 2020 v.22 no.4 pp. 1605-1610
ISSN:
1523-7052
Subject:
benzamides; catalytic activity; chemical bonding; chemical structure; dehydrogenation; dimerization; fluorescence; photoluminescence; ruthenium; synthesis
Abstract:
... We report here a direct and efficient strategy for the synthesis of highly conjugated dimeric pyrrolo-fused isoquinoline derivatives from readily available benzamides and maleimides. This reaction overall proceeds by following a domino approach: C–C bond formation via challenging primary amide-directed Ru(II)-catalyzed ortho alkenylation followed by annulation and C–C bond formation through Ru(II) ...
DOI:
10.1021/acs.orglett.0c00194

19. Redox-Inactive Metal Cations Modulate the Reduction Potential of the Uranyl Ion in Macrocyclic Complexes

Author:
Kumar, Amit,   et al.   ; Lionetti, Davide; Day, Victor W.; Blakemore, James D.;     Show all 4 Authors
Source:
Journal of the American Chemical Society 2020 v.142 no.6 pp. 3032-3041
ISSN:
1520-5126
Subject:
Lewis acids; acidity; ligands; metal ions; spectral analysis; transition elements; uranyl ions; voltammetry; water solubility
Abstract:
... Capture and activation of the water-soluble uranyl dication (UO₂²⁺) remains a challenging problem, as few rational approaches are available for modulating the reactivity of this species. Here, we report the divergent synthesis of heterobimetallic complexes in which UO₂²⁺ is held in close proximity to a range of redox-inactive metals by a tailored macrocyclic ligand. Crystallographic and spectrosco ...
DOI:
10.1021/jacs.9b11903

20. Characteristics, toxicity, source identification and seasonal variation of atmospheric polycyclic aromatic hydrocarbons over East India

Author:
Kumar, Amit,   et al.   ; Sankar, Tapan Kumar; Sethi, Shrikanata Shankar; Ambade, Balram;     Show all 4 Authors
Source:
Environmental science and pollution research international 2020 v.27 no.1 pp. 678-690
ISSN:
0944-1344
Subject:
air; air quality; carcinogenicity; monsoon season; particulates; polycyclic aromatic hydrocarbons; risk; seasonal variation; summer; winter; India
Abstract:
... Atmospheric PM₂.₅-bound polycyclic aromatic hydrocarbons (PAHs) were analyzed over urban and rural sites during January to December 2018. Total annual average concentration of PM₂.₅ was 74.41 ± 24.96 μg/m³ over urban and 52.03 ± 13.11 μg/m³ over rural site during study time. The annual average concentration of PM₂.₅ over urban and rural atmospheres were found approximately twice in urban and found ...
DOI:
10.1007/s11356-019-06882-5