Results 111 to 120 of about 4,812,323 (280)

Underlying Mechanisms of Chromatographic H/D, H/F, cis/trans and Isomerism Effects in GC-MS

Metabolites
Charge-free gaseous molecules labeled with deuterium 2H (D) atoms elute earlier than their protium-analogs 1H (H) from most stationary GC phases. This effect is known as the chromatographic H/D isotope effect (hdIEC) and can be calculated by dividing the
Dimitrios Tsikas
doaj   +1 more source

From Lab to Landscape: Environmental Biohybrid Robotics for Ecological Futures

Advanced Robotics Research, EarlyView.
This Perspective explores environmental biohybrid robotics, integrating living tissues, microorganisms, and insects for operation in real‐world ecosystems. It traces the leap from laboratory experiments to forests, wetlands, and urban environments and discusses key challenges, development pathways, and opportunities for ecological monitoring and ...
Miriam Filippi
wiley   +1 more source

AVALIAÇÃO DE ADITIVOS DE FASE MÓVEL E TEMPERATURA NA VIDA ÚTIL DE COLUNAS PARA CROMATOGRAFIA LÍQUIDA DE ALTA EFICIÊNCIA

Química Nova
Buffered solutions, additives, and column temperature are widely used in high-performance liquid chromatography to promote adequate retention of compounds and to improve the chromatographic separation.
Kátia A. Gomes, Allyson L. R. Santos, Anizio M. Faria   +2 more
doaj   +1 more source

Retention properties of novel beta-CD bonded stationary phases in reversed-phase HPLC mode

, 2009
With the given special Structures, the CD bonded stationary phases are expected to have complementary retention Properties with conventional C18 stationary phase, which will be helpful to enhance the polar selectivity in RP mode separation. In this work,
Xue, Xingya, Zhao, Yanyan, Liang, Xinmiao, Li, Xiuling, Zhang, Yukui, Guo, Zhimou, Zhang, Yongping, Xu, Qing   +7 more
core   +1 more source

DRIVE‐SAFE: Data‐Driven Robustness and Informed Validation for Evolving Specifications via Formal Evaluation

Advanced Robotics Research, EarlyView.
DRIVE‐SAFE evaluates learning‐based, black‐box autonomous driving policies against evolving temporal safety requirements using Signal Temporal Logic robustness metrics. It aggregates distributional robustness measures with domain‐informed weights to guide iterative retraining.
Kristy Sakano, Jianyu An, Dinesh Manocha, Huan Xu   +3 more
wiley   +1 more source

Quantitative structure-retention relationships in reversed-phase liquid chromatography using several stationary and mobile phases

, 2003
Quant. structure-retention relations (QSRRs) were employed to study retention mechanism of reversed-phase liq. chromatog. (RPLC). Two C18 and 2 C8 columns were used with mobile phases contg. MeOH, MeCN, and THF in concns. ranging from 40 to 90 (vol./vol.)
Katarzyna Lewandowska, Kaliszan, R, Carel A. Cramers, Henk A. Claessens, Lewandowska, K., Cramers, C.A.M.G., Lewandowska, K, Claessens, HA Henk, Vonk, E.C., Roman Kaliszan, Vonk, EC Erik, Cramers, CAMG Karel = Carl, Erik C. Vonk, Claessens, H.A., Kaliszan, R.   +14 more
core   +1 more source

Intelligent Sky Guardians (InSkyGuard): An Aerial Robotic Swarm for Autonomous Detection and Entrapment of Rogue Multirotors

Advanced Robotics Research, EarlyView.
Intelligent Sky Guardians (InSkyGuard) is introduced as a four‐drone swarm that autonomously detects, tracks, and safely captures rogue drones using a coordinated net system. Computer vision and leader–follower control architecture enable synchronized enclosure, while integrated failsafes enhance system reliability. Validated through closed‐environment
Joshua Hastings, Levanya Dewanarayana, Iline Shaju, Haider Al‐Wizni, Sampson Marquis, Weicheng Huang, Pooya Sareh   +6 more
wiley   +1 more source

Optimizing Chromatographic Separation with Redosing: Effects on Separation Efficiency of a Model System in Centrifugal Partition Chromatography

Separations
This study investigates and optimizes chromatographic separation in a Centrifugal Partition Chromatograph. Therefore, a model system is separated in a single-disc rotor.
Felix Buthmann, Jan Hohlmann, Mareen Neuwald, Gerhard Schembecker   +3 more
doaj   +1 more source

A Low‐Cost, Handheld Optical Stiffness Sensor for Minimally Invasive Surgery

Advanced Robotics Research, EarlyView.
A novel handheld stiffness sensor is presented for real‐time tissue stiffness characterization. By simultaneously sensing contact force and tissue deformation, the device enables accurate stiffness quantification without requiring precise manual control. This approach offers a promising solution for intraoperative tumor detection and minimally invasive
Qianyu Ma, Ruxiang Jiang, Kaspar Althoefer, Nicolas Herzig, Hareesh Godaba   +4 more
wiley   +1 more source

Consensus Formation and Change are Enhanced by Neutrality

Advanced Science, EarlyView.
Neutral agents are shown to enhance both the formation and overturning of consensus in collective decision‐making. A general mathematical model and experiments with locusts and humans reveal that neutrality enables robust consensus via simple interactions and accelerates consensus change by reducing effective population size.
Andrei Sontag, Janina A. Hoffmann, Tim Rogers, Christian A. Yates   +3 more
wiley   +1 more source