Search Results - "Asthana, R."

Biohydrogen production from sugarcane bagasse by integrating dark- and photo-fermentation by Rai, Pankaj K., Singh, S.P., Asthana, R.K., Singh, Shweta

“…•Acid and enzyme pretreated SCB was utilized to produce H2.•Effective removal of fermentation inhibitors by adsorbent resin.•SSFF and two-step fermentation was…”
Get full text

Optimizing light regimes for neutral lipid accumulation in Dunaliella salina MCC 43: a study on physiological status and carbon allocation by Mohanta, Abhishek, Prasad, Nitesh, Khadim, Sk Riyazat, Singh, Prabhakar, Singh, Savita, Singh, Avinash, Kayastha, A. M., Asthana, R. K.

“…Dunaliella salina is a favourable source of high lipid feedstock for biofuel and medicinal chemicals. Low biomass output from microalgae is a significant…”
Get full text

Joining of partially sintered alumina to alumina, titanium, Hastealloy and C–SiC composite using Ag–Cu brazes by Asthana, R., Singh, M.

“…The joining behavior of polycrystalline alumina sintered at different temperatures (1473–1773 K) and times (0.5–4 h) to itself and to Ti, Hastealloy and a CVI…”
Get full text

Photo-induced biosynthesis of silver nanoparticles from aqueous extract of Dunaliella salina and their anticancer potential by Singh, Ankit Kumar, Tiwari, Ratnakar, Kumar, Vijay, Singh, Prabhakar, Riyazat Khadim, S.K., Tiwari, Anupam, Srivastava, Vikas, Hasan, S.H., Asthana, R.K.

“…The synthesis of silver nanoparticles (AgNPs) via green route, using biological entities is an area of interest, because one of the potential applications in…”
Get full text

Aluminum Metal–Matrix Composites for Automotive Applications: Tribological Considerations by Prasad, S.V., Asthana, R.

“…Aluminum alloys possess a number of mechanical and physical properties that make them attractive for automotive applications, but they exhibit extremely poor…”
Get full text

A Study on Mixotrophic Approach for Maximizing Lipid Production in a Hypersaline Microalga, Dunaliella salina by Mohanta, Abhishek, Khadim, Sk Riyazat, Singh, Prabhakar, Laxmi, Asthana, R. K.

“…The microalga, Dunaliella salina , is a treasure of fine chemicals, carotenoids, and lipids of industrial importance. The present investigation focused on the…”
Get full text

Joining of zirconium diboride-based ultra high-temperature ceramic composites using metallic glass interlayers by Singh, M., Asthana, R.

“…Three zirconium diboride (ZrB 2)-based ultra-high-temperature ceramic-matrix composites: ZrB 2–SCS9–SiC (ZSS), ZrB 2–SiC–C (ZSC), and ZrB 2–SiC (ZS), were…”
Get full text

Joining and integration of ZrB2-based ultra-high temperature ceramic composites using advanced brazing technology by Singh, M., Asthana, R.

“…Zirconium diboride–SiC (ZS) particulate ceramic-matrix composites containing either carbon powder (termed ZSC composite) or SCS-9a silicon carbide fibers…”
Get full text

Characterization of brazed joints of C C composite to Cu-clad-Molybdenum by Singh, M., Asthana, R.

“…Carbon–carbon composites with either CVI matrix or resin-derived matrix were joined to copper-clad-molybdenum using two active braze alloys, Cusil-ABA (1.75%…”
Get full text

Biohydrogen Production from Cheese Whey Wastewater in a Two-Step Anaerobic Process by Rai, Pankaj K., Singh, S. P., Asthana, R. K.

“…Cheese whey-based biohydrogen production was seen in batch experiments via dark fermentation by free and immobilized Enterobacter aerogenes MTCC 2822 followed…”
Get full text

Brazing of ceramic-matrix composites to Ti and Hastealloy using Ni-base metallic glass interlayers by Singh, M., Asthana, R., Shpargel, T.P.

“…Carbon–carbon, carbon–silicon carbide, and silicon carbide–silicon carbide composites were vacuum brazed to Ti and Hastealloy X using Ni-base metallic glass…”
Get full text

Characterization of silicon carbide joints fabricated using SiC particulate-reinforced Ag–Cu–Ti alloys by Halbig, M.C., Coddington, B.P., Asthana, R., Singh, M.

“…CVD silicon carbide was brazed to itself using two Ag–Cu–Ti braze alloys reinforced with SiC particulates to control braze thermal expansion and enhance joint…”
Get full text

Optimization of photo-hydrogen production based on cheese whey spent medium by RAI, Pankaj K, ASTHANA, R. K, SINGH, S. P

“…Cheese whey wastewater diluted to 10 g lactose/L was initially subjected to dark-fermentation by Enterobacter aerogenes MTCC 2822, and the VFAs-rich spent…”
Get full text

One pot hydrothermal synthesis of fluorescent NP-carbon dots derived from Dunaliella salina biomass and its application in on-off sensing of Hg (II), Cr (VI) and live cell imaging by Singh, Ankit Kumar, Singh, Vikas Kumar, Singh, Mamata, Singh, Prabhakar, Khadim, Sk. Riyazat, Singh, Urmilesh, Koch, Biplob, Hasan, S.H., Asthana, R.K.

“…[Display omitted] •This is first report of synthesis of fluorescent carbon dots from Dunaliella salina.•A-NPCDs were used as fluorescent probe for selective…”
Get full text

Gene Expression in the Cyanobacterium Anabaena sp. PCC7120 under Desiccation by Katoh, H., Asthana, R. K., Ohmori, M.

“…The N₂-fixing cyanobacterium Anabaena sp. PCC7120 showed an inherent capacity for desiccation tolerance. A DNA microarray covering almost the entire genome of…”
Get full text

Brazing of carbon–carbon composites to Cu-clad molybdenum for thermal management applications by Singh, M., Asthana, R., Shpargel, T.P.

“…Advanced carbon–carbon composites were joined to copper-clad molybdenum (Cu/Mo) using four active metal brazes containing Ti (Cu–ABA, Cusin-1 ABA, Ticuni, and…”
Get full text

Antimicrobial assay and genetic screening of selected freshwater Cyanobacteria and identification of a biomolecule dihydro‐2H‐pyran‐2‐one derivative by Srivastava, A., Singh, V.K., Patnaik, S., Tripathi, J., Singh, P., Nath, G., Asthana, R.K.

“…Aims Explorations of freshwater Cyanobacteria as antimicrobial (bacteria, fungi and methicillin‐resistant Staphylococcus aureus (MRSA) strains) drug resource…”
Get full text

Joining and interface characterization of in situ reinforced silicon nitride by Asthana, R., Singh, M., Martinez-Fernandez, J.

“…► AS800 Si3N4 brazed using oxidation-resistant, high use-temperature braze Cu-ABA. ► Interface enriched in Ti and Si but not in Y, La, and Sr (from Y2O3, La2O3…”
Get full text

Nymphaea rubra Ameliorates TNF-α-Induced Insulin Resistance via Suppression of c-Jun NH2-Terminal Kinase and Nuclear Factor-κB in the Rat Skeletal Muscle Cells by Gautam, Sudeep, Rahuja, Neha, Ishrat, Nayab, Asthana, R. K, Mishra, D. K, Maurya, Rakesh, Jain, Swatantra Kumar, Srivastava, Arvind Kumar

“…In this work, we demonstrated insulin signaling and the anti-inflammatory effects by the chloroform fraction of ethanolic extract of Nymphaea rubra flowers in…”
Get full text

Steady MHD Flow of Nano-Fluids over a Rotating Porous Disk in the Presence of Heat Generation/Absorption: a Numerical Study using PSO by Uddin, Z., Asthana, R., Awasthi, M. K., Gupta, S.

“…In this paper, a numerical integration technique, based on particle swarm optimization is proposed to investigate the effects of internal heat…”
Get full text