Results 31 to 40 of about 20,719 (245)

Dinuclear Group 4 Metallocene Catalysts of the Type [(Cp2M)2(μ‐Me)(μ‐C2R)]: Structure‐Activity Relationships in Ethylene Polymerization

Chemistry – A European Journal, EarlyView.
Homo‐ and heterodinuclear group 4 metallocene complexes of the type [(Cp2M)2(μ‐Me)(μ‐C2R)] (M = Ti, Zr) are active catalysts for the polymerization of ethylene in the presence of aluminium‐free activators. The catalytically active species are proposed to have dinuclear character and depending on the type of activator, unique reactivity was observed ...
Hanan Al Hamwi, Mirko Rippke, Anke Spannenberg, Michal Horáček, Jiří Pinkas, Vojtěch Varga, Martin Lamač, Fabian Reiß, Torsten Beweries   +8 more
wiley   +1 more source

Influence of Aspect on Phenology of Himalayan Wild Cherry viz.Prunus cerasoides D. Don

International Journal of Bio-Resource and Stress Management
The current study was carried out on Prunus cerasoides at two sites: Daro in District Sirmour and Nauni in District Solan of Himachal Pradesh (August 2022–May, 2023), aimed to understand the phenological behaviour of Himalayan wild cherry viz.
Sugandhi Chauhan, Jai Pal Sharma, Pratima Vaidya, Nitin Sharma, Shikha Bhagta, Anchal   +5 more
doaj   +1 more source

Comparative Performance of Aonla (Emblica officinalis G.) Cultivars under Parbhani Condition

International Journal of Bio-Resource and Stress Management, 2023
The present investigation was carried out at the Department of Horticulture, college of Agriculture, Marathwada Krishi Vidyapeeth, Parbhani Maharastra during year 2009-2010 to evaluate “Comparative Performance of Aonla (Emblica officinalis G.) Cultivars
Bantesh Kumar Maholiya, Heerendra Prasad, Arun Kumar Gupta, Manish Thakur, Shivendu Pratap Singh Solanki   +4 more
doaj  

Combined in-oil PD sensor with AE and UHF methods for PD detection in transformer

Energy Reports, 2022
In the present study, a combined in-oil partial discharge (PD) sensor based on oil valve with acoustical emission and ultra high frequency (AE/UHF) methods for PD measurement in transformer is proposed. The combined PD sensor is designed by placing an AE
Wenrong Si, Hong Guan, Weiqiang Yao, Chenzhao Fu, Peng Yuan   +4 more
doaj   +1 more source

UHF FLOWS AND THE FLIP AUTOMORPHISM [PDF]

Reviews in Mathematical Physics, 2001
A UHF algebra is a C*-algebra A of the type [Formula: see text] for some sequence (ni) with ni≥2, where Mn is the algebra of n×n matrices, while a UHF flow α is a flow (or a one-parameter automorphism group) on the UHF algebra A obtained as [Formula: see text], where [Formula: see text] for some [Formula: see text].
openaire   +3 more sources

SNR‐Efficient Inhomogeneous Magnetization Transfer (ihMT) for Clinical Applications at 7 T

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Inhomogeneous MT (ihMT) is an MRI modality sensitive to Myelin, the lipid‐rich membrane surrounding the axons. A novel ihMT saturation strategy and its associated B1+$$ {\mathrm{B}}_1^{+} $$ correction at UHF are proposed. The aim is to generate a strong ihMT effect within a clinically compatible scan time while complying with SAR ...
Timothy Anderson, Niklas Wallstein, Lucas Soustelle, Thomas Troalen, Gopal Varma, David C. Alsop, Maxime Guye, Guillaume Duhamel, Olivier M. Girard   +8 more
wiley   +1 more source

T1‐weighting in Steady‐State FLASH MRI–Diffusion Is Not Only Supportive but Mandatory for the Contrast

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose FLASH imaging is widely assumed to produce a T1‐weighted steady‐state contrast using RF‐ and gradient‐spoiling. We observed substantial overestimation of CSF signals in simulations, when diffusion was neglected and realistic proton density was applied.
Simon Weinmüller, Deepak Charles Chellapandian, Jonathan Endres, Jochen Leupold, Florian Gritsch, Fabian Wagner, Rainer Schneider, Moritz Zaiss   +7 more
wiley   +1 more source

Design, Fabrication, and Experimental Evaluation of a 435 MHz Helical Antenna for 433 MHz IoT Modules

Jurnal Elektronika dan Telekomunikasi
The rapid growth of wireless communication demands within Internet of Things (IoT) applications requires antennas that exhibit high efficiency, compact dimensions, and reliable performance in the UHF band.
Rusfa Rusfa, Rozeff Pramana, Bavitra Bavitra, Ferly Oktavia, M. Hasbi Sidqi Alajuri, Andreas M Simannulang   +5 more
doaj   +1 more source

Otkrivanje i analiza signala parcijalnih pražnjenja u energetskom transformatoru UHF metodom

Energija, Ekonomija, Ekologija, 2020
U ovom radu predstavljeno je praktično otkrivanje signala parcijalnih pražnjenja pomoću UHF davača montiranog na energetskom transformatoru i izvršena je detaljna analiza signala.
Đorđe Dukanac
doaj   +1 more source

Ultra-high-field MRI of postmortem human fetal wrist joints: initial experience

European Radiology Experimental, 2023
Background This study aimed to assess the feasibility of postmortem ultra-high-field magnetic resonance imaging (UHF-MRI) to study fetal musculoskeletal anatomy and explore the contribution of variation in iodine and formaldehyde (paraformaldehyde, PFA ...
Sabine H. Josemans, Anne-Sophie van der Post, Gustav J. Strijkers, Yousif Dawood, Maurice J. B. van den Hoff, Sjoerd R. J. Jens, Miryam C. Obdeijn, Roelof-Jan Oostra, Mario Maas   +8 more
doaj   +1 more source