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9 Results Found

  • Article
  • Open Access
1,077 Views
57 Pages

Introductory and intermediate electrical-engineering education commonly models fundamental circuit and device parameters, including inductance, capacitance, resistance, permeability, permittivity, conductivity, characteristic impedance, transformer t...

(This article belongs to the Section Mathematical Sciences)
  • Article
  • Open Access
4 Citations
1,275 Views
30 Pages

Polyacrylamide and Polyacrylamide/Polysaccharide Hydrogels for Well Water Shutoff in High-Temperature Reservoirs

  • Aleksey Telin,
  • Natalia Sergeeva,
  • Rustem Asadullin,
  • Ekaterina Gusarova and ,
  • Ravil Yakubov,
  • Vladimir Dokichev,
  • Anatoly Politov,
  • Elina Sunagatova,
  • Natalia Gibadullina and
  • Lyubov Lenchenkova
  • + 6 authors+ 1 author

28 October 2025

Polyacrylamide and polyacrylamide/polysaccharide hydrogels exhibiting high structural and mechanical properties, along with acceptable gelation times and gelant viscosity, are proposed for water shutoff applications in high-temperature reservoirs. Th...

(This article belongs to the Section Gel Chemistry and Physics)
  • Article
  • Open Access
8 Citations
3,168 Views
15 Pages

Supplementation of Paraformic Acid as a Substitute for Antibiotics in the Diet Improves Growth Performance and Liver Health in Broiler Chickens

  • Qinjin Wang,
  • Jiaxing Niu,
  • Yang Liu,
  • Ning Jiao and ,
  • Libo Huang,
  • Shuzhen Jiang,
  • Lei Yan,
  • Weiren Yang and
  • Yang Li
  • + 4 authors+ 0 author

18 October 2022

The current study aimed to explore the effects of supplementing paraformic acid (PFA) into broilers’ diet on growth performance, inflammatory responses, and liver protection. A total of 567 healthy one-day-old broilers were used in a 42-d study...

(This article belongs to the Special Issue New and Potential Feedstuffs and Additives in Livestock)
  • Article
  • Open Access
9 Citations
3,177 Views
18 Pages

13 July 2023

The effective representation of land surface hydrological models strongly relies on spatially varying parameters that require calibration. Well-calibrated physical models can effectively propagate observed information to unobserved variables, but tra...

(This article belongs to the Section AI Remote Sensing)
  • Article
  • Open Access
1,149 Views
14 Pages

SPaRLoRA: Spectral-Phase Residual Initialization for LoRA in Low-Resource ASR

  • Liang Lan,
  • Wenyong Wang,
  • Guanyu Zou,
  • Jia Wang and
  • Daliang Wang

16 November 2025

Parameter-efficient fine-tuning (PEFT) methods like Low-Rank Adaptation (LoRA) are widely used to adapt large pre-trained models under limited resources, yet they often underperform full fine-tuning in low-resource automatic speech recognition (ASR)....

(This article belongs to the Special Issue Multimodal Learning and Transfer Learning)
  • Communication
  • Open Access
10 Citations
2,222 Views
5 Pages

Synthesis and Inhibition of Influenza H1N1 Virus by Propargylaminoalkyl Derivative of Lithocholic Acid

  • Anastasiya V. Petrova,
  • Irina E. Smirnova,
  • Sergey V. Fedij,
  • Yulia N. Pavlyukova and ,
  • Vladimir V. Zarubaev,
  • Thao Tran Thi Phuong,
  • Khine Myint Myint and
  • Oxana B. Kazakova
  • + 3 authors+ 0 author

20 April 2023

In the current study, the conjugate of 3-oxo-lithocholic acid with N-methylpiperazine and paraform was synthesized using the Mannich reaction and evaluated for antiviral activity. This modification resulted in a dramatic increase of antiviral activit...

(This article belongs to the Section Organic Synthesis and Biosynthesis)
  • Article
  • Open Access
19 Citations
2,726 Views
16 Pages

Thermal Degradation Study of Hydrogel Nanocomposites Based on Polyacrylamide and Nanosilica Used for Conformance Control and Water Shutoff

  • Aleksey Telin,
  • Farit Safarov,
  • Ravil Yakubov,
  • Ekaterina Gusarova and ,
  • Artem Pavlik,
  • Lyubov Lenchenkova and
  • Vladimir Dokichev
  • + 2 authors+ 0 author

22 December 2024

The application of nanocomposites based on polyacrylamide hydrogels as well as silica nanoparticles in various tasks related to the petroleum industry has been rapidly developing in the last 10–15 years. Analysis of the literature has shown tha...

(This article belongs to the Special Issue Chemical and Gels for Oil Drilling and Enhanced Recovery)
  • Article
  • Open Access
2 Citations
2,057 Views
23 Pages

4 August 2025

Ocean Acoustic Tomography (OAT) is an important marine remote sensing technique used for inverting large-scale ocean environmental parameters, but traditional methods face challenges in computational complexity and environmental interference. This pa...

(This article belongs to the Section Information Applications)
  • Article
  • Open Access
4 Citations
1,987 Views
27 Pages

Engineering and Technological Approaches to Well Killing in Hydrophilic Formations with Simultaneous Oil Production Enhancement and Water Shutoff Using Selective Polymer-Inorganic Composites

  • Valery Meshalkin,
  • Rustem Asadullin,
  • Sergey Vezhnin,
  • Alexander Voloshin and ,
  • Rida Gallyamova,
  • Annaguly Deryaev,
  • Vladimir Dokichev,
  • Anvar Eshmuratov,
  • Lyubov Lenchenkova and
  • Ravil Yakubov
  • + 12 authors+ 7 authors

4 September 2025

Well-killing operations in water-sensitive hydrophilic formations are often complicated by extended well clean-up periods and, in some cases, failure to restore the well’s production potential post-kill. Typical development targets exhibiting t...

(This article belongs to the Topic Enhanced Oil Recovery Technologies, 4th Edition)