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11. Current Status of the Green Diesel Industry

Author

Aslam, Mohammad, Kumar, Himansh, Sarma, Anil K., Kumar, Pramod, Howlett, Robert J., Series Editor, Littlewood, John, Series Editor, Jain, Lakhmi C., Series Editor, Aslam, Mohammad, editor, Shivaji Maktedar, Shrikant, editor, and Sarma, Anil Kumar, editor

Published
2022
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18. Evaluation of CO2 Adsorption Capacity of Crystalline, Microporous Zeolite-Y Structure

Author

Ahuja Ravi Shanker, Bhavani A. Geetha, Wani Tanveer A., Prasad Tara, Prabhakar B., Aslam Mohammad, Shitu Anas, and Umair Mohd

Subjects
zeolites-y, adsorption capacity, co2 adsorption, modification, zeolites, Environmental sciences, GE1-350
Abstract

CO2 gas was selected for evaluation of adsorption capacity over zeolite-Y. The CO2 gas was intended to choose to be adsorbed over zeolites like zeolite (13X, NaX, BaX, FAU-X and Y), which is the main cause of greenhouse effect and global warming. Na form of zeolite-Y with different Si/Al ratios (5, 30, 100, 200) are treated with HCl to increases the porosity, surface area and adsorption capacities of`CO2. Treating with HCl doesn’t affect the basic structure of zeolite and increases the porosity and adsorption capacity. The treated zeolite-Y with HCl is tested for characterization with XRD and BET for crystallinity and pore volume and BET surface area and found the result are improved promisingly

Published
2024
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24. Tip-induced Superconductivity Coexisting with Preserved Topological Properties in Line-nodal Semimetal ZrSiS

Author

Aggarwal, Leena, Singh, Chandan K., Aslam, Mohammad, Singha, Ratnadwip, Pariari, Arnab, Gayen, Sirshendu, Kabir, Mukul, Mandal, Prabhat, and Sheet, Goutam

Subjects
Condensed Matter - Superconductivity
Abstract

ZrSiS was recently shown to be a new material with topologically non-trivial band structure which exhibits multiple Dirac nodes and a robust linear band dispersion up to an unusually high energy of 2\,eV. Such a robust linear dispersion makes the topological properties of ZrSiS insensitive to perturbations like carrier doping or lattice distortion. Here we show that a novel superconducting phase with a remarkably high $T_c$ of 7.5\,K can be induced in single crystals of ZrSiS by a non-superconducting metallic tip of Ag. From first-principles calculations we show that the observed superconducting phase might originate from dramatic enhancement of density of states due to the presence of a metallic tip on ZrSiS. Our calculations also show that the emerging tip-induced superconducting phase co-exists with the well preserved topological properties of ZrSiS., Comment: with supplementary materials

Published
2018
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32. Giant Enhancement of Superconductivity in Zr Point Contacts

Author

Aslam, Mohammad, Singh, Chandan K., Das, Shekhar, Kumar, Ritesh, Datta, Soumya, Halder, Soumyadip, Gayen, Sirshendu, Kabir, Mukul, and Sheet, Goutam

Subjects
Condensed Matter - Superconductivity, Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

For certain complex superconducting systems, the superconducting properties get enhanced under mesoscopic point contacts made of elemental non-superconducting metals. However, understanding of the mechanism through which such contact induced local enhancement of superconductivity happens has been limited due to the complex nature of such compounds. In this paper we present giant enhancement of superconducting transition temperature (T$_c$) and superconducting energy gap ($\Delta$) in a simple elemental superconductor Zr. While bulk Zr shows a critical temperature around 0.6\,K, superconductivity survives at Ag/Zr and Pt/Zr point contacts up to 3\,K with a corresponding five-fold enhancement of $\Delta$. From first principles calculations we show that the enhancement in superconducting properties can be attributed to a modification in the electron-phonon coupling accompanied by an enhancement of the density of states which involves the appearance of a new electron band at the Ag/Zr interfaces., Comment: 5 pages, 5 figures

Published
2017
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33. In(OTf)3‐Catalyzed Diastereoselective [2+3+1] Annulation of 3‐Formylchromones with α‐Methylstyrenes for Divergent Synthesis of Tetrahydroxanthones.

Author

Akhtar, Muhammad Saeed, Sim, Hyo Seon, Aslam, Mohammad, Rubio, Peter Yuosef M., and Lee, Yong Rok

Subjects
ANNULATION, RING formation (Chemistry), FUNCTIONAL groups, BIOCHEMICAL substrates
Abstract

An In(III)‐catalyzed [2+3+1] annulation strategy is developed for the diastereoselective construction of diversely functionalized tetrahydroxanthones bearing chromone rings. This protocol is based on a three‐component reaction involving various 3‐formylchromones and α‐methylstyrenes via a carbonyl‐ene and formal [4+2] cycloaddition reaction. Notable features of this reaction include its wide substrate scope, high tolerance towards functional groups, atom economy, and excellent diastereoselectivity. In addition, the synthesized tetrahydroxanthones are readily transformed into 2‐hydroxybenzophenone products. [ABSTRACT FROM AUTHOR]

Published
2024
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34. Overexpression of AcWRKY31 Increases Sensitivity to Salt and Drought and Improves Tolerance to Mealybugs in Pineapple.

Author

Wai, Myat Hnin, Luo, Tiantian, Priyadarshani, S. V. G. N., Zhou, Qiao, Mohammadi, Mohammad Aqa, Cheng, Han, Aslam, Mohammad, Liu, Chang, Chai, Gaifeng, Huang, Dongping, Liu, Yanhui, Cai, Hanyang, Wang, Xiaomei, Qin, Yuan, and Wang, Lulu

Subjects
TRANSCRIPTION factors, TROPICAL fruit, PROTEIN kinases, PROMOTERS (Genetics), PLANT breeders, PINEAPPLE, PEPTIDASE
Abstract

Pineapple is a globally significant tropical fruit, but its cultivation faces numerous challenges due to abiotic and biotic stresses, affecting its quality and quantity. WRKY transcription factors are known regulators of stress responses, however, their specific functions in pineapple are not fully understood. This study investigates the role of AcWRKY31 by overexpressing it in pineapple and Arabidopsis. Transgenic pineapple lines were obtained using Agrobacterium-mediated transformation methods and abiotic and biotic stress treatments. Transgenic AcWRKY31-OE pineapple plants showed an increased sensitivity to salt and drought stress and an increased resistance to biotic stress from pineapple mealybugs compared to that of WT plants. Similar experiments in AcWRKY31-OE, AtWRKY53-OE, and the Arabidopsis Atwrky53 mutant were performed and consistently confirmed these findings. A comparative transcriptomic analysis revealed 5357 upregulated genes in AcWRKY31-OE pineapple, with 30 genes related to disease and pathogen response. Notably, 18 of these genes contained a W-box sequence in their promoter region. A KEGG analysis of RNA-Seq data showed that upregulated DEG genes are mostly involved in translation, protein kinases, peptidases and inhibitors, membrane trafficking, folding, sorting, and degradation, while the downregulated genes are involved in metabolism, protein families, signaling, and cellular processes. RT-qPCR assays of selected genes confirmed the transcriptomic results. In summary, the AcWRKY31 gene is promising for the improvement of stress responses in pineapple, and it could be a valuable tool for plant breeders to develop stress-tolerant crops in the future. [ABSTRACT FROM AUTHOR]

Published
2024
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38. SELSI Consensus Statement for Safe Cholecystectomy — Prevention and Management of Bile Duct Injury — Part A

Author

Bansal, Virinder Kumar, Misra, Mahesh C., Agarwal, Anil K, Agrawal, JB, Agarwal, PN, Aggarwal, Sandeep, Aslam, Mohammad, Krishna, Asuri, Baksi, Aditya, Behari, Anu, Bhattacharjee, Hemanga K, Bhojwani, Rajesh, Chander, Jagdish, Chattopadhyay, TK, Chintamani, Chowbey, Pradeep, Dalvi, Abhay, Dash, NR, Dhawan, IK, Gamangatti, Shivanand, Garg, PK, Gupta, NM, Gupta, Rajesh, Gupta, SK, Gupta, Vikas, Kaman, L, Kapur, BML, Kataria, Kamal, Khan, Muneer, Khanna, Ajay K, Khullar, Rajesh, Kumar, Anand, Kumar, Atin, Kumar, Sandeep, Kumar, Subodh, Lal, Pawanindra, Maurya, SD, Moirangthem, GS, Pal, Sujoy, Panwar, Rajesh, Parshad, Rajinder, Pottakkat, Biju, Prajapati, Om Prakash, Puntambekar, Shailesh, Ranjan, Piyush, Rathore, Yashwant Singh, Sahni, Peush, Sarangi, Rathindra, Seenu, Vuthaluru, Sharma, Rajeev, Shukla, VK, Singh, DP, Singh, Jaspal, Singh, Rajdeep, Sinha, Rajeev, Sikora, Sadiq S, Srivastava, Amit, Srivastava, Anurag, Srivastava, KN, Thomas, Shaji, Verma, GR, Wig, JD, and Kapoor, VK

Published
2021
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39. SELSI Consensus Statement for Safe Cholecystectomy—Prevention and Management of Bile Duct Injury—Part B

Author

Bansal, Virinder Kumar, Misra, Mahesh C., Agarwal, Anil K, Agrawal, JB, Agarwal, PN, Aggarwal, Sandeep, Aslam, Mohammad, Krishna, Asuri, Baksi, Aditya, Behari, Anu, Bhattacharjee, Hemanga K, Bhojwani, Rajesh, Chander, Jagdish, Chattopadhyay, TK, Chintamani, Chowbey, Pradeep, Dalvi, Abhay, Dash, NR, Dhawan, IK, Gamangatti, Shivanand, Garg, PK, Gupta, NM, Gupta, Rajesh, Gupta, SK, Gupta, Vikas, Kaman, L, Kapur, BML, Kataria, Kamal, Khan, Muneer, Khanna, Ajay K, Khullar, Rajesh, Kumar, Anand, Kumar, Atin, Kumar, Sandeep, Kumar, Subodh, Lal, Pawanindra, Maurya, SD, Moirangthem, GS, Pal, Sujoy, Panwar, Rajesh, Parshad, Rajinder, Pottakkat, Biju, Prajapati, Om Prakash, Puntambekar, Shailesh, Ranjan, Piyush, Rathore, Yashwant Singh, Sahni, Peush, Sarangi, Rathindra, Seenu, Vuthaluru, Sharma, Rajeev, Shukla, VK, Singh, DP, Singh, Jaspal, Singh, Rajdeep, Sinha, Rajeev, Sikora, Sadiq S, Srivastava, Amit, Srivastava, Anurag, Srivastava, KN, Thomas, Shaji, Verma, GR, Wig, JD, and Kapoor, VK

Published
2021
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40. Unexpected superconductivity at nanoscale junctions made on the topological crystalline insulator Pb$_{0.6}$Sn$_{0.4}$Te

Author

Das, Shekhar, Aggarwal, Leena, Roychowdhury, Subhajit, Aslam, Mohammad, Gayen, Sirshendu, Biswas, Kanishka, and Sheet, Goutam

Subjects
Condensed Matter - Superconductivity
Abstract

Discovery of exotic phases of matter from the topologically non-trivial systems not only makes the research on topological materials more interesting but also enriches our understanding of the fascinating physics of such materials. Pb$_{0.6}$Sn$_{0.4}$Te was recently shown to be a topological crystalline insulator. Here we show that by forming a mesoscopic point-contact using a normal non-superconducting elemental metal on the surface of Pb$_{0.6}$Sn$_{0.4}$Te a novel superconducting phase is created locally in a confined region under the point-contact. This happens while the bulk of the sample remains to be non-superconducting and the superconducting phase emerges as a nano-droplet under the point-contact. The superconducting phase shows a high transition temperature $T_c$ that varies for different point-contacts and falls in a range between 3.7 K and 6.5 K. Therefore, this Letter presents the discovery of a new superconducting phase on the surface of a topological crystalline insulator and the discovery is expected to shed light on the mechanism of induced superconductivity in topologically non-trivial systems in general., Comment: The submission contains 22 pages including supplementary material. The main text contains 3 figures, 36 references and supplementary material contains 11 figures and one table

Published
2016
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41. Anisotropic superconductivity in La(O,F)BiSeS crystals revealed by field-angle dependent Andreev reflection spectroscopy

Author

Aslam, Mohammad, Gayen, Sirshendu, Singh, Avtar, Tanaka, Masashi, Yamaki, Takuma, Takano, Yoshihiko, and Sheet, Goutam

Subjects
Condensed Matter - Superconductivity
Abstract

From field-angle dependent Andreev reflection spectroscopy on single crystals of La(O,F)BiSeS, which belongs to the recently discovered BiCh 2 (Ch = S, Se) based layered superconductors, we found that the superconductivity in La(O,F)BiSeS is highly anisotropic. We measured a superconducting energy gap of 0.61 meV for current injected along c-axis at 1.5 K. Detailed temperature and magnetic field dependent studies of the gap also reveal the presence of unconventional pairing in La(O,F)BiSeS. We show that the observed anisotropic superconducting properties can be attributed to the anisotropy in the superconducting order parameter with a complex symmetry in superconducting La(O,F)BiSeS., Comment: 4 figures, references included

Published
2016
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42. Evidence of a pseudogap driven by competing orders of multi-band origin in the ferromagnetic superconductor Sr$_{0.5}$Ce$_{0.5}$FBiS$_2$

Author

Aslam, Mohammad, Paul, Arpita, Thakur, Gohil S., Gayen, Sirshendu, Kumar, Ritesh, Singh, Avtar, Das, Shekhar, Ganguli, Ashok K., Waghmare, Umesh V., and Sheet, Goutam

Subjects
Condensed Matter - Superconductivity
Abstract

From temperature and magnetic field dependent point-contact spectroscopy on the ferromagnetic superconductor Sr$_{0.5}$Ce$_{0.5}$FBiS$_2$ (bulk superconducting $T_c$ = 2.5 K) we observe (a) a pseudogap in the normal state that sustains to a remarkably high temperature of 40 K and (b) two-fold enhancement of $T_c$ upto 5 K in the point-contact geometry. In addition, Andreev reflection spectroscopy reveals a superconducting gap of 6 meV for certain point-contacts suggesting that the mean field $T_c$ of this system could be approximately 40 K, the onset temperature of pseudo-gap. Our results suggest that quantum fluctuations originating from other competing orders in Sr$_{0.5}$Ce$_{0.5}$FBiS$_2$ forbid a global phase coherence at high temperatures thereby suppressing $T_c$. Apart from the known ordering to a ferromagnetic state, our first-principles calculations reveal nesting of a multi-band Fermi surface and a significant electron-phonon coupling that could result in charge density wave-like instabilities., Comment: This is an author-created, un-copyedited version of an article accepted for publication in Journal of Physics: Cond-mat. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it

Published
2016
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48. Impact evaluation of microfinance: a HEPM perspective

Author

Kumar Senthil, Aslam Mohammad, Nawanir Gusman, and Moshood Taofeeq Durojaye

Subjects
microfinance, impact analysis, poverty, grameen bank, hepm model, Environmental sciences, GE1-350
Abstract

Microfinance services were primarily conceived for poverty alleviation and millions of borrowers have benefited across various countries. This study measures microfinance impact on borrowers from the following dimensions viz. enterprise, household, individual and security. The impact was measured by comparing the borrowers’ poverty level before and after microfinance (within impact), and then with and without microfinance (between impact) using Household Economic Portfolio Model (HEPM). In general, it was observed that microfinance has had a favorable impact on borrowers. The income level of borrowers has increased after they availed the loan indicating that participant borrowers’ financial position is better than that of the non-participant borrowers. The results confirm that both industry survival and growth are achievable thereby advocating that microfinance is a sustainable development tool in the current scenario. Hence, policymakers should continue framing strategies that are in favour of extending microfinance to micro-enterprises that are deprived of mainstream finance.

Published
2023
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