Search Results - "Ravikumar, P"

Cobalt-Catalyzed Regioselective Direct C‑4 Alkenylation of 3‑Acetylindole with Michael Acceptors Using a Weakly Coordinating Functional Group by Banjare, Shyam Kumar, Nanda, Tanmayee, Ravikumar, P. C

“…Herein, we disclosed the first report on the selective C(4)–H functionalization of 3-acetylindole derivatives using first-row transition metal cobalt where an…”
Get full text

Nitrile-Containing Pharmaceuticals: Efficacious Roles of the Nitrile Pharmacophore by Fleming, Fraser F, Yao, Lihua, Ravikumar, P. C, Funk, Lee, Shook, Brian C

Get full text

Cobalt Catalyzed Hydroarylation of Michael Acceptors with Indolines Directed by a Weakly Coordinating Functional Group by Banjare, Shyam Kumar, Chebolu, Rajesh, Ravikumar, P. C

“…A cobalt­(III) catalyzed hydroarylation of Michael acceptors using indolines, selectively at the C-7 position, has been reported. For the selective C-7…”
Get full text

A Palladium-Catalyzed Cascade C–C Activation of Cyclopropenone and Carbonylative Amination: Easy Access to Highly Functionalized Maleimide Derivatives by Nanda, Tanmayee, Ravikumar, P. C

“…We describe herein the first report on palladium-catalyzed C–C bond activation of cyclopropenone and concomitant carbonylative amination to produce maleimides…”
Get full text

Rhodium-Catalyzed Room Temperature C–C Activation of Cyclopropanol for One-Step Access to Diverse 1,6-Diketones by Pati, Bedadyuti Vedvyas, Ghosh, Asit, Ravikumar, P. C

“…A rhodium-catalyzed room temperature C–C activation of cyclopropanol has been demonstrated for the single-step synthesis of a range of electronically and…”
Get full text

Principal component analysis and hydrochemical facies characterization to evaluate groundwater quality in Varahi river basin, Karnataka state, India by Ravikumar, P., Somashekar, R. K.

“…The present study envisages the importance of graphical representations like Piper trilinear diagram and Chadha’s plot, respectively to determine variation in…”
Get full text

Closing the methane gap in US oil and natural gas production emissions inventories by Rutherford, Jeffrey S., Sherwin, Evan D., Ravikumar, Arvind P., Heath, Garvin A., Englander, Jacob, Cooley, Daniel, Lyon, David, Omara, Mark, Langfitt, Quinn, Brandt, Adam R.

“…Methane (CH 4 ) emissions from oil and natural gas (O&NG) systems are an important contributor to greenhouse gas emissions. In the United States, recent…”
Get full text

An Investigation into the Mechanical and Wear Characteristics of Hybrid Composites: Influence of Different Types and Content of Biodegradable Reinforcements by Sumesh, K. R., Kavimani, V., Rajeshkumar, G., Ravikumar, P., Indran, S.

“…This research work focuses on the wear characteristics of hybrid composites prepared using Sisal fiber (SF) /Pineapple fiber (PF) and Pineapple fly ash (PA) in…”
Get full text

Effect of hybridization on mechanical and water absorption properties of short palmyra palm leaf stalk/carbon fibers reinforced polyester composites by K., Madhan Muthu Ganesh, G., Rajeshkumar, P., Ravikumar

“…Recently, there has been interest in the development of hybrid composites for diverse industrial applications. In this aspect, this paper explores the…”
Get full text

A novel energy‐efficient routing protocol for industrial WSN using hybrid COOT‐LS algorithm with LSTM‐based DOM prediction by Ravikumar, P., Kumar, P. Ganesh

“…Summary Industrial wireless sensor networks (IWSNs) are very important to improve and simplify the way to manage, monitor, and control industrial factories…”
Get full text

An Investigation into the Tribological Properties of Bidirectional Jute/Carbon Fiber Reinforced Polyester Hybrid Composites by Ravikumar, P., Suresh, A. R., Rajeshkumar, G.

“…In this work, the tribological performance of bidirectional jute/carbon fiber reinforced polyester composites was investigated using response surface…”
Get full text

Optimization of operational parameters on performance and emissions of a diesel engine using biodiesel by Sivaramakrishnan, K, Ravikumar, P

“…This work investigates the influence of compression ratio on the performance and emissions of a diesel engine using biodiesel (10, 20, 30, and 50 %)…”
Get full text

A review of close-range and screening technologies for mitigating fugitive methane emissions in upstream oil and gas by Fox, Thomas A, Barchyn, Thomas E, Risk, David, Ravikumar, Arvind P, Hugenholtz, Chris H

“…Fugitive methane emissions from the oil and gas industry are targeted using leak detection and repair (LDAR) programs. Until recently, only a limited number of…”
Get full text

Hydrochemistry and evaluation of groundwater suitability for irrigation and drinking purposes in the Markandeya River basin, Belgaum District, Karnataka State, India by Ravikumar, P, Somashekar, R. K, Angami, Mhasizonuo

“…Markandeya River basin stretches geographically from 15°56′ to 16°08′ N latitude and 74°37′ to 74°58′ E longitude, positioned in the midst of Belgaum district,…”
Get full text

Methane Quantification Performance of the Quantitative Optical Gas Imaging (QOGI) System Using Single-Blind Controlled Release Assessment by Ilonze, Chiemezie, Wang, Jiayang Lyra, Ravikumar, Arvind P, Zimmerle, Daniel

“…Quantitative optical gas imaging (QOGI) system can rapidly quantify leaks detected by optical gas imaging (OGI) cameras across the oil and gas supply chain. A…”
Get full text

Designing better methane mitigation policies: the challenge of distributed small sources in the natural gas sector by Ravikumar, Arvind P, Brandt, Adam R

“…Methane-a short-lived and potent greenhouse gas-presents a unique challenge: it is emitted from a large number of highly distributed and diffuse sources. In…”
Get full text

Hydroxylamine‐O‐Sulfonic Acid (HOSA) as a Redox‐Neutral Directing Group: Rhodium Catalyzed, Additive Free, One‐Pot Synthesis of Isoquinolines from Arylketones by Biswal, Pragati, Pati, Bedadyuti Vedvyas, Chebolu, Rajesh, Ghosh, Asit, Ravikumar, P. C.

“…A new application of hydroxylamine‐O‐sulfonic acid (HOSA) has been discovered whereby aromatic ketones react with HOSA and alkynes to form isoquinolines in the…”
Get full text

Effect of fish scale powder addition on the mechanical and free vibration properties of jute/carbon fibers reinforced hybrid polyester composites by Saravanakumar, S., Kapilan, S., Ravikumar, P., Rajeshkumar, G., Janarthanan, P.

“…The present study involves a comprehensive study on the mechanical and free vibration properties of jute and carbon fibers reinforced polyester composite…”
Get full text

Global liquefied natural gas expansion exceeds demand for coal-to-gas switching in paris compliant pathways by Yang, Shuting, Hastings-Simon, Sara, Ravikumar, Arvind P

“…Abstract The shift from coal to natural gas in the power sector has led to significant reductions in carbon emissions. The shale revolution that led to this…”
Get full text

Information-Theoretic Lower Bounds on the Oracle Complexity of Stochastic Convex Optimization by Agarwal, A., Bartlett, P. L., Ravikumar, P., Wainwright, M. J.

“…Relative to the large literature on upper bounds on complexity of convex optimization, lesser attention has been paid to the fundamental hardn4516420ess of…”
Get full text