Results 101 to 110 of about 100,161 (232)

Transannular O‐Heterocyclization Reactions of Cyclododeca‐1,5,9‐triene Derivatives: A New Concept for the Preparation of Key Intermediates for Total Syntheses of Annonaceous Acetogenins

Helvetica Chimica Acta, EarlyView.
Four stereogenic centers are formed diastereoselectively in one step from a cyclic (E,E)‐1,5‐diene system using an electrophilic addition reaction. Subsequent ozonolytic cleavage of the intact Z‐double bond, followed by intramolecular nucleophilic substitution, yields an octahydroterfurandione with a threo,cis,threo configuration, an arrangement found ...
Holger Schimanski, André Streiter, Micheline May, Oliver Mimkes, Johannes van Kempen, Constantin Daniliuc, Günter Haufe   +6 more
wiley   +1 more source

Computational design of two‐dimensional MA2Z4 family field‐effect transistor for future Ångström‐scale CMOS technology nodes

InfoMat, EarlyView.
Two‐dimensional MA2Z4 such as MoSi2N4 offer a new path to extend transistor scaling beyond the limits of silicon. Due to their exceptional properties, these 2D semiconductors are promising candidates for future Ångström‐scale CMOS technology. This review outlines the computational design and roadmap bridging materials discovery, device design and ...
Che Chen Tho, Zongmeng Yang, Shibo Fang, Shiying Guo, Liemao Cao, Chit Siong Lau, Fei Liu, Shengli Zhang, Jing Lu, L. K. Ang, Lain‐Jong Li, Yee Sin Ang   +11 more
wiley   +1 more source

Perovskite‐based time‐domain signal‐balancing LiDAR sensor with centimeter depth resolution

InfoMat, EarlyView.
In this study, we present a monolithic high‐speed perovskite‐based photodetector capable of directly sensing the time delay between two light pulses with a temporal resolution of at least 170 ps. This outstanding time resolution is achieved through a signal‐balancing detection scheme that effectively overcomes the limitations of conventional ...
Gebhard J. Matt, Vitalii Bartosh, Joshua R. S. Lilly, Vincent J.‐Y. Lim, Lorenzo J. A. Ferraresi, Daria Proniakova, Yuliia Kominko, Gytis Juška, Laura M. Herz, Sergii Yakunin, Maksym V. Kovalenko   +10 more
wiley   +1 more source

Open-Source Optimization of Hybrid Monte Carlo Methods for Fast Response Modeling of NaI (Tl) and HPGe Gamma Detectors

Journal of Nuclear Engineering
Modeling the response of gamma detectors has long been a challenge within the nuclear community. Significant research has been conducted to digitally replicate instruments that can cost over USD 100,000 and are difficult to operate outside of a ...
Matthew Niichel, Stylianos Chatzidakis
doaj   +1 more source

Development of a nuclear technique for monitoring water levels in pressurized vehicles [PDF]

A new technique for monitoring water levels in pressurized stainless steel cylinders was developed. It is based on differences in attenuation coefficients of water and air for Cs137 (662 keV) gamma rays.
Davis, W. T., Mall, G. H., Singh, J. J.
core   +1 more source

Respiratory Syncytial Virus Under the Lens of Structure: From Prefusion Stabilization to Next‐Generation Immunotherapies

iNew Medicine, EarlyView.
This illustration integrates key concepts covered in the review, including high‐risk populations, viral structure, host entry factors, the replication cycle, and licensed antibody‐based prevention strategies. ABSTRACT Respiratory syncytial virus (RSV) is a negative‐sense RNA virus belonging to the genus Orthopneumovirus within the family Pneumoviridae.
Zekai Cheng, Qianqian Wang, Jiachen Zhang, Sandra Chiu   +3 more
wiley   +1 more source

Innovative projection acquisition algorithm for optimizing portable LNDCT in oil and gas pipeline imaging

Nuclear Engineering and Technology
Fluid pipelines, commonly utilized in the oil industry, often face efficiency and reliability issues due to sediment buildup causing erosion, corrosion, and pipe wall thinning.
Mostafa Kabir, Hossein Afarideh, Mitra Ghergherehchi, Jong-Seo Chai   +3 more
doaj   +1 more source

Improved sterilizable multiplier phototubes Final report [PDF]

Development of sterilizable multiplier phototube for scintillation ...
Dumas, E. J., Rome, M.
core   +1 more source

Non‐invasive and efficient diabetic retinal mitochondrial repair nanoplatform based on engineered endothelial mitochondrial‐derived vesicles with dynamic integrated stress response modulation

Interdisciplinary Medicine, EarlyView.
Under hyperglycemic conditions, mitochondrial dysfunction in retinal endothelial cells triggers excessive reactive oxygen species/reactive nitrogen species production, barrier protein degradation, and endothelial barrier breakdown in diabetic retinopathy.
Siyu Gui, Jie Gao, Tianchang Tao, Peng Wang, Zhihao Huang, Yuyang She, Jiajie Li, Jingwan Su, Zhe Lu, Jianchao Qiao, Song Wang, Xiaodong Sun, Mohan Li   +12 more
wiley   +1 more source

Optimization of Flight Parameters for Gamma Radiation Detection and Mapping Using Drones

Brazilian Journal of Radiation Sciences
The application of drones in radiometric surveys has emerged as a promising solution, particularly for mapping radiation in areas that are difficult to access. This approach enables the creation of detailed distribution maps. However, the accuracy of the
Felipe Mamed, Alessandra Vaz, Ary Machado, Jonathan Oliveira, Leandro Silva, Paulo Barreto, Paulo Iack, Paulo Silveira, Rodrigo Curzio, Rodrigo Souza, Wallace Vallory   +10 more
doaj   +1 more source