Results 61 to 70 of about 3,816 (209)

MiR‐21‐5p Protects Embryonic Growth and Heart Function During Developmental Hypoxia by Dampening HIF Responses and Altering Gene Expression

Comprehensive Physiology, Volume 16, Issue 3, June 2026.
miR‐21‐5p protects embryonic growth and heart function during developmental hypoxia by dampening HIF responses and shifting gene networks toward improved cardiomyocyte survival and calcium handling. This work identifies miR‐21‐5p as a promising therapeutic target for preventing fetal growth restriction and cardiovascular impairment in high‐risk ...
Bernardo J. Krause, Ximena Calle, Ranya V. Kumar, Youguo Niu, Oriana Ramirez‐Herrera, Damariz Gonzalez, Barbara Bernal, Sage G. Ford, Rachael C. Crew, Anna L. K. Cochrane, German A. Arenas, Alex Di Genova, Dino A. Giussani   +12 more
wiley   +1 more source

Dissolved gas content forecasting in power transformers based on Least Square Support Vector Machine (LSSVM)

Latin-American Journal of Computing, 2017
Taking into account the chaotic characteristic of gas production within power transformers, a Least Square Support Vector Machine (LSSVM) model is implemented to forecast dissolved gas content based on historical chromatography samples.
Roberto Fiallos
doaj  

A Dedicated Genetic Algorithm for Two-Dimensional Non-Guillotine Strip Packing [PDF]

, 2007
This paper introduces DGA, a new dedicated genetic algorithm for a two-dimensional (2D) non-guillotine strip packing problem (2D-SPP). DGA integrates two key features: a hierarchical fitness function and a problem-specific crossover operator (WAX for ...
G. Gómez-Villouta, J.K. Hao, J.P. Hamiez   +2 more
core   +5 more sources

Exploring Oxygen Electrocatalysis in Phosphonium Ionic Liquids Towards Sodium–Oxygen Batteries

ChemElectroChem, Volume 13, Issue 7, 1 April 2026.
Sodium–oxygen (Na–O2) batteries are attractive candidates for high‐energy storage systems; however, their long‐term operation is hindered by the instability of highly reactive intermediates such as the superoxide anion (O2•−). Ionic liquids (ILs) have emerged as promising electrolytes not only because of their intrinsic safety but also due to their ...
Laura Garcia‐Quintana, The An Ha, Fraser R. Hughson, Patrick C. Howlett, Alan M. Bond, Luke A. O’Dell, Nagore Ortiz‐Vitoriano, Cristina Pozo‐Gonzalo   +7 more
wiley   +1 more source

Insulation system diagnosis in power transformers using DGA analysis and Megger DC

Ingeniería e Investigación
Dissolved gas chromatography (DGA) analysis and Megger DC insulation tests are performed to diagnose the condition of a power transformer. In this context, the objective of this study is to assess whether there is a relationship between both types of ...
Juan Sebastian Juris Zapata, Iván Camilo Durán Tovar, Josimar Tello Maita, Agustin Marulanda Guerra   +3 more
doaj   +1 more source

Technical and vocational skills (TVS): a means of preventing violence among youth in Nigeria [PDF]

, 2017
Technical and vocational skills are an important tool for reducing violence among youth, especially in Nigeria, who face security challenges due to different kinds of violence.
Ibrahim, Mohammed, Wan Mohamed, Wan Azlinda   +1 more
core  

Stabilized Cellulase in Chitosan–Polyvinyl Alcohol Biopolymer Beads for Sustainable Enzymatic Deinking of Recycled Paper

ChemistryOpen, Volume 15, Issue 4, April 2026.
A stable and reusable biocatalyst, cellulase@Cs/PVA/Ga, is engineered by immobilizing cellulase onto glutaraldehyde‐activated chitosan (Cs) and coating it with polyvinyl alcohol. This composite system enhances enzymatic stability and efficiency for the sustainable deinking of recycled newspaper, offering a green alternative to harsh chemical treatments.
Parisa Chakeri, Ghasem Mohammadi‐Nejad, Ghasem Hosseini Salekdeh, Shohreh Ariaeenejad, Azadeh Lohrasbi‐Nejad   +4 more
wiley   +1 more source

Comparison between unipolar and bipolar single phase grid-connected inverters for PV applications [PDF]

, 2007
An inverter is essential for the interfacing of photovoltaic panels with the AC network. There are many possible inverter topologies and inverter switching schemes and each one will have its own relative advantages and disadvantages.
Ahfock, Tony, Bowtell, Les
core   +5 more sources

A Transformer Fault Diagnosis Model Using an Optimal Hybrid Dissolved Gas Analysis Features Subset with Improved Social Group Optimization-Support Vector Machine Classifier

Energies, 2018
Dissolved gas analysis (DGA) is widely used to detect the incipient fault of power transformers. However, the accuracy is greatly limited by selection of DGA features and performance of fault diagnostic model.
Jiake Fang, Hanbo Zheng, Jiefeng Liu, Junhui Zhao, Yiyi Zhang, Ke Wang   +5 more
doaj   +1 more source

A Methodology for the Calculation of Typical Gas Concentration Values and Sampling Intervals in the Power Transformers of a Distribution System Operator

Energies, 2020
Predictive maintenance strategies in power transformers aim to assess the risk through the calculation and monitoring of the health index of the power transformers.
Sergio Bustamante, Mario Manana, Alberto Arroyo, Raquel Martinez, Alberto Laso   +4 more
doaj   +1 more source