Results 111 to 120 of about 19,427 (285)

Nucleophilic Reactions of Cyclobutenones and the Related 4,4‐Dichlorocyclobutenone Derivatives

European Journal of Organic Chemistry, EarlyView.
Cyclobutenone derivates and their 4,4‐dichloro counterparts have an uninterrupted attention as useful synthons in the synthesis of complex organic molecules. Their nucleophilic reactions remain underexplored. This review brings attention to these reactions, whose outcome is not straightforward.
Sarah J. Wright, Muhluri H. Mthombeni, Songeziwe Ntsimango   +2 more
wiley   +1 more source

Efficient Blockchain-Based Pseudonym Authentication Scheme Supporting Revocation for 5G-Assisted Vehicular Fog Computing

IEEE Access
The driving experience in fifth-generation (5G)-assisted vehicular fog computing systems has improved thanks to recent advancements in intelligent transportation. However, in the present vehicular system setup, the phenomenon of providing low computation
Badiea Abdulkarem Mohammed, Mahmood A. Al-Shareeda, Abeer Abdullah Alsadhan, Zeyad Ghaleb Al-Mekhlafi, Amer A. Sallam, Bassam Ali Al-Qatab, Mohammad T. Alshammari, Abdulaziz M. Alayba   +7 more
doaj   +1 more source

Privacy-Preserving Revocation Checking with Modified CRLs

, 2008
Certificate Revocation Lists (CRLs) are the most popular means of revocation checking. A CRL is essentially a signed and timestamped list containing information about all revoked certificates issued by a certification authority.

core  

FeIII‐Mediated Synthesis of Azaspirodienones via Ipso‐Radical Cyclization of Ugi–4CR Adducts

European Journal of Organic Chemistry, EarlyView.
An efficient two‐step protocol for the synthesis of azaspirodienones via Fe‐mediated ipso‐radical cyclization of Ugi adducts has been developed. This methodology provides rapid access to these privileged spirocyclic architectures under mild conditions, offering a practical and versatile approach to generating structurally complex molecules with ...
Silvia J. Becerra–Anaya, Valeria Morales–Hernández, Luis A. Polindara–García   +2 more
wiley   +1 more source

Modular Synthesis of Di‐ and Triazadibenzoazulenes by a Cross‐Coupling/Cycloisomerization Strategy

European Journal of Organic Chemistry, EarlyView.
Two series of regioisomeric di‐ and triazadibenzoazulenes were prepared from dihalogenated imidazo[1,2‐a]pyridines and imidazo[1,2‐a]pyrazines. Imidazo[1,2‐a]pyridines and imidazo[1,2‐a]pyrazines are important nitrogen‐containing heterocycles with applications in medicinal and materials chemistry.
Karyna Kulyk, Artyom Petrosyan, Karsten Paul Lüdtke, Jonas Surkau, Martin Köckerling, Peter Ehlers, Peter Langer   +6 more
wiley   +1 more source

Timing of congruent and discordant interictal epileptiform EEG discharges in focal epilepsy

Epileptic Disorders, EarlyView.
Abstract Objective Interictal epileptiform discharges (IEDs) can provide additional information for localizing the epileptogenic zone (EZ). However, due to the brevity of routine electroencephalography, IEDs are often not recorded and there is a lack of general recommendation regarding the recording duration Methods In our study, we analyzed the mean ...
Katharina Ernst, Mohammad Navab Daneshmand, Nicholas Fearns, Selina Trapp, Jan Rémi   +4 more
wiley   +1 more source

Integrated Solar and Wind Energy Systems for Domestic Power Generation and CO2 Emissions Reduction

Energy Science &Engineering, EarlyView.
A well‐structured and sequentially methodical procedure for evaluating the Wind and Photovoltaic Hybrid Energy System‐based technical, environmental, and economic viability. This study investigates the integration of solar photovoltaic(PV) and wind energy systems for domestic electricity generation in the Gaza Strip.
Mohamed Elnaggar, Mai Abuhelwa, Wael A. Salah, Aamir Bashir Taas, Hala J. El‐Khozondar, Yasser F. Nassar, Ahmad Aboul Khail, Alfian Ma'arif, Mohammed J. K. Bashir, Abdurrahman A. Mattar   +9 more
wiley   +1 more source

Group signatures with probabilistic revocation

, 2016
Aspects of group signatures with probabilistic revocation are described. In one example employing these aspects, at least one computing device can map an alias token to an alias code comprising a plurality of alias code segments.

core  

Revisiting International Student Mobility Under New Geopolitics: Stratification, Conditionality, and Uncertainty

Future in Educational Research, EarlyView.
ABSTRACT In the 21st century, the governance of international student mobility has undergone a fundamental transformation, driven primarily by securitization, geoeconomic competition, and domestic political pressures that conventional market‐based frameworks such as the push‐pull model and human capital theory cannot adequately explain.
Shibao Guo, Zhongrui Wang
wiley   +1 more source

Spirobifluorene fusion in multiple resonance frameworks enables efficient pure‐red OLEDs with narrowband emission and suppressed efficiency roll‐off

FlexMat, EarlyView.
An orthogonal spirobifluorene‐fusion strategy is introduced for B/N/O‐alternated MR frameworks, enabling improved kRISC (5.46 × 103 s−1), high ΦPL (97%), and narrow‐band pure‐red emission. Vacuum‐evaporated OLEDs incorporating this emitter achieve an EQEmax >40% (FWHM = 36 nm) and exhibit exceptionally low efficiency roll‐off at high luminance ...
Yan‐Yun Jing, Han Wu, Xiaoling Xu, Sijie Xian, Jingsheng Miao, Xiaojun Yin, Chuluo Yang, Xiaosong Cao   +7 more
wiley   +1 more source