Results 141 to 150 of about 25,846 (298)

"Saturn" remains in orbit

open access: yesТехнологія та конструювання в електронній апаратурі, 2013
The article is dedicated to scientific and production enterprise "Saturn" — since its foundation up to the present day. The authors describe the determining stages of its development and its team’s scientific and technological achievements over the 45 ...
V. M. Chmil, E. N. Glushechenko
doaj  

Targeting p21‐High Senescent Kupffer Cells Nanotherapeutically Potentiates Antitumor Immunity in Advanced Hepatocellular Carcinoma with Portal Vein Tumor Thrombus

open access: yesAdvanced Science, EarlyView.
Schematic illustration of a biomimetic SKEV@AAV platform targeting p21‐high senescent Kupffer cells (sKCs) in hepatocellular carcinoma (HCC) with portal vein tumor thrombus (PVTT). p21‐high sKCs accumulate in the PVTT microenvironment and establish an immunosuppressive, SASP‐rich environment that facilitates tumor cell proliferation and immune evasion.
Na Ta   +10 more
wiley   +1 more source

An Immediate‐Response Detection System for γ‐Hydroxybutyrate to Enhance Personal Safety in Social Environments

open access: yesAdvanced Science, EarlyView.
A graphene‐based electrical biosensor enables rapid and highly sensitive detection of GHB at 100 fm in both standard solutions and artificial urine, providing reliable point‐of‐need screening for drug‐facilitated sexual assault. The platform demonstrates strong selectivity, fast response, and a wide dynamic range, supporting accurate detection in ...
Jai Eun An   +8 more
wiley   +1 more source

Intermittent Fasting Restores Cardiac Lipid Homeostasis in Diabetic Cardiomyopathy in Association With Akkermansia Muciniphila and 1‐methyl‐L‐histidine

open access: yesAdvanced Science, EarlyView.
Intermittent fasting reshapes the gut microbiota in diabetic cardiomyopathy, restoring Akkermansia muciniphila and the microbiota‐associated metabolite 1‐methyl‐L‐histidine. This shift is linked to improved cardiac lipid homeostasis, reduced lipid peroxidation, and attenuated myocardial injury, highlighting a gut microbiota–metabolite–lipid axis in ...
Kaiyuan Jiang   +7 more
wiley   +1 more source

Analysis of directions of modern satellite communication systems efficiency increase

open access: yes, 2013
В статье проведен анализ технологий передачи сигналов, использующихся в наземных беспроводных телекоммуникационных системах (например, сверхширокополосные сигналы, OFDM и MIMO), с целью их применения для увеличения скорости передачи в канале, пропускной ...
С.А. Кравчук   +7 more
core  

Application of residue number systems to bent-pipe satellite communication systems [PDF]

open access: yes, 2011
Conference Name:2011 6th International ICST Conference on Communications and Networking in China, CHINACOM 2011. Conference Address: Harbin, China. Time:August 17, 2011 - August 19, 2011.ICSTTo reduce the impact on the performance of satellites caused by
明召   +6 more
core  

An efficient and secure anonymous authentication scheme for mobile satellite communication systems

open access: yes, 2011
This paper proposes a new efficient and secure anonymous authentication scheme for mobile satellite communication systems. Compared with the related schemes, the proposed scheme achieves the following three main advantages - (1) It is just based on a ...
윤은준   +3 more
core   +1 more source

Semi‐Transparent Organic Photodiodes with Near‐Infrared Detection Fabricated by Inkjet Printing

open access: yesAdvanced Electronic Materials, EarlyView.
This work shows the inkjet printing of semi‐transparent and opaque organic photodiodes that enable light detection in the near‐infrared regime. Their transparency and high detection speed make them ideal for applications in soft robotics, wearable devices, and light communication systems.
Luis Arturo Ruiz‐Preciado   +3 more
wiley   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

open access: yesAdvanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang   +9 more
wiley   +1 more source

Doppler Compensation for LEO Satellite Communication Systems

open access: yes, 1998
This thesis investigates the carrier synchronization problem due to Doppler shift encountered in low data rate, low earth orbit (LEO) satellite communication systems. In particular, two new techniques are developed.
Ah-Thew, G.
core  

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