Results 121 to 130 of about 26,313 (264)

CF3SO2X (X = Na, Cl) as reagents for trifluoromethylation, trifluoromethylsulfenyl-, -sulfinyl- and -sulfonylation. Part 1: Use of CF3SO2Na

Beilstein Journal of Organic Chemistry, 2017
Sodium trifluoromethanesulfinate, CF3SO2Na, and trifluoromethanesulfonyl chloride, CF3SO2Cl, are two popular reagents that are widely used for the direct trifluoromethylation of a large range of substrates.
Hélène Guyon, Hélène Chachignon, Dominique Cahard   +2 more
doaj   +1 more source

Reinforcement Learning-Based Model Matching to Reduce the Sim-Real Gap in COBRA [PDF]

arXiv
This paper employs a reinforcement learning-based model identification method aimed at enhancing the accuracy of the dynamics for our snake robot, called COBRA. Leveraging gradient information and iterative optimization, the proposed approach refines the parameters of COBRA's dynamical model such as coefficient of friction and actuator parameters using
arxiv  

COBRA: Data-Efficient Model-Based RL through Unsupervised Object Discovery and Curiosity-Driven Exploration [PDF]

arXiv, 2019
Data efficiency and robustness to task-irrelevant perturbations are long-standing challenges for deep reinforcement learning algorithms. Here we introduce a modular approach to addressing these challenges in a continuous control environment, without using hand-crafted or supervised information.
arxiv  

Insect Remains in the Gut of a Cobra, Naia tripudians [PDF]

, 1931
N. C. E. Miller, H. T. Pagden
openalex   +1 more source

Contextualized Metabolic Modelling Revealed Factors Affecting Isoflavone Accumulation in Soybean Seeds

Plant, Cell &Environment, EarlyView.
ABSTRACT Isoflavones, secondary metabolites with numerous health benefits, are predominantly found in legume seeds, especially soybean; however, their contents in domesticated soybean seeds are highly variable. Wild soybeans are known for higher seed isoflavone contents than cultivars. Here we used experimental and modelling approaches on wild soybean (
Carolina A. Contador, Ailin Liu, Ming‐Sin Ng, Yee‐Shan Ku, Siu H. J. Chan, Hon‐Ming Lam   +5 more
wiley   +1 more source

Synthesis of the heterocyclic core of the D-series GE2270

Beilstein Journal of Organic Chemistry, 2017
A straightforward enantiomerically pure synthesis of the heterocyclic core of the D-series GE2270 is reported. The synthetic strategy combines the Hantzsch thiazole’s building condensation with a cross-coupling reaction including direct C–H hetarylation ...
Christophe Berini, Thibaut Martin, Pierrik Lassalas, Francis Marsais, Christine Baudequin, Christophe Hoarau   +5 more
doaj   +1 more source

Reinforcement Learning-Based Model Matching in COBRA, a Slithering Snake Robot [PDF]

arXiv
This work employs a reinforcement learning-based model identification method aimed at enhancing the accuracy of the dynamics for our snake robot, called COBRA. Leveraging gradient information and iterative optimization, the proposed approach refines the parameters of COBRA's dynamical model such as coefficient of friction and actuator parameters using ...
arxiv  

Elaps Ezequieli e Rhinostoma bimaculatum, cobras novas do Estado de Minas Geraes [PDF]

, 1922
Adolpho Lutz, Oswaldo de Mello
openalex   +1 more source

Root Hair Development Is Suppressed by Long‐Term Mild Heat Through Down‐Regulation of RHD6 and RHD6‐like Genes

Plant, Cell &Environment, EarlyView.
ABSTRACT Roots located in the upper soil layers are prone to experiencing high temperatures. Despite their importance for water and nutrient absorption, little is known about the effect of high temperature on root hairs. Here, we found that exposure of Arabidopsis thaliana seedlings to long‐term mild heat suppressed root hair initiation.
Gaigai Du, Xin Tian, Daan M. van den Brink, Jian Xu, Eric J. W. Visser, Ivo Rieu   +5 more
wiley   +1 more source

The action of bee venom, cobra venom and lysolecithin on the adrenal medulla [PDF]

, 1940
W. Feldberg
openalex   +1 more source