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3,967 Results Found

  • Feature Paper
  • Article
  • Open Access
15 Citations
7,363 Views
16 Pages

27 December 2022

Ideal drug carriers should be stable in biological environments but eventually release their drug load once inside the targeted cells. These two aspects can be in contrast with each other, thus they need to be carefully tuned in order to achieve the...

  • Feature Paper
  • Article
  • Open Access
4 Citations
3,215 Views
14 Pages

Thermal Stability and Kinetics of Degradation of Moxonidine as Pure Ingredient vs. Pharmaceutical Formulation

  • Bianca Baul,
  • Adriana Ledeţi,
  • Denisa Cîrcioban,
  • Amalia Ridichie,
  • Titus Vlase,
  • Gabriela Vlase,
  • Francisc Peter and
  • Ionuţ Ledeţi

7 June 2023

The stability of active pharmaceutical ingredients (APIs) and the corresponding pharmaceutical formulations are nowadays of great importance in pharmaceutical research and technology. The quality of an API or of finished pharmaceutical products (FPPs...

  • Article
  • Open Access
6 Citations
2,600 Views
16 Pages

27 February 2025

Petroleum-based lubricants raise environmental concerns due to their non-biodegradability and toxicity, whereas biobased lubricants underperform owing to low thermal stability. This study examined and compared three vegetable oils, along with their c...

  • Article
  • Open Access
25 Citations
8,913 Views
17 Pages

A crucial aspect of pharmaceutical development is the demonstration of long-term stability of the drug product. Biopharmaceuticals, such as proteins or peptides in liquid formulation, are typically administered via parental routes and should be stabl...

  • Article
  • Open Access
2,380 Views
19 Pages

21 October 2021

Real-time transient stability studies are based on voltage angle measures obtained with phasor measurement units (PMUs). A more precise calculation to address transient stability is obtained when using the rotor angles. However, these values are comm...

  • Article
  • Open Access
7 Citations
3,775 Views
18 Pages

6 February 2022

Microwave-based dielectric heating is a suitable method for energy- and time-efficient processes. Considering the energy required in the production of carbon fibers, it is evident that microwave-based dielectric heating during the different phases of...

  • Article
  • Open Access
11 Citations
3,793 Views
11 Pages

Thermal Stability and Degradation Kinetics of Patulin in Highly Acidic Conditions: Impact of Cysteine

  • Enjie Diao,
  • Kun Ma,
  • Hui Zhang,
  • Peng Xie,
  • Shiquan Qian,
  • Huwei Song,
  • Ruifeng Mao and
  • Liming Zhang

16 September 2021

The thermal stability and degradation kinetics of patulin (PAT, 10 μmol/L) in pH 3.5 of phosphoric-citric acid buffer solutions in the absence and presence of cysteine (CYS, 30 μmol/L) were investigated at temperatures ranging from 90 to 150 °C. The...

  • Article
  • Open Access
4 Citations
2,469 Views
17 Pages

14 March 2023

The kinetic features of a slow-moving landslide situated above the Wudongde hydropower station were analyzed using particle flow code 3D (PFC3D) software. This research was based on geological investigations, remote sensing interpretation, and digita...

  • Article
  • Open Access
6 Citations
3,522 Views
20 Pages

14 November 2024

Anthocyanins are flavonoid substances of plant origin with potential antioxidant effects. Because of their intense colors, they are used as natural dyes in food. However, their stability in food matrices is limited. This study aimed to verify the eff...

  • Article
  • Open Access
10 Citations
3,580 Views
24 Pages

27 December 2023

This research explores the application of germinated mung bean extract, rich in GABA (Gamma-aminobutyric acid) and polyphenols, in enhancing human health. Recognizing the instability of these bioactive compounds in environmental conditions, encapsula...

  • Article
  • Open Access
22 Citations
2,829 Views
16 Pages

Effect of Nanoparticles on the Thermal Stability and Reaction Kinetics in Ionic Nanofluids

  • Adela Svobodova-Sedlackova,
  • Sergio Huete-Hernández,
  • Alejandro Calderón,
  • Camila Barreneche,
  • Pablo Gamallo and
  • Ana Inés Fernandez

23 May 2022

Nowadays, the incorporation of nanoparticles into thermal fluids has become one of the most suitable strategies for developing high-performance fluids. An unconventional improvement of thermo–physical properties was observed with the addition o...

  • Proceeding Paper
  • Open Access
1,461 Views
5 Pages

26 October 2023

This study is dedicated to an investigation and comparison of the kinetics of the foam stability of protein foaming agents based on the hydrolysates of solid keratin. The work utilized ready-made hydrolysates based on sodium hydroxide and a mixture o...

  • Article
  • Open Access
336 Views
19 Pages

A Comprehensive Kinetic Study on the Enhanced Thermal Stability of Silica Xerogels with the Addition of Organochlorinated Substituents

  • Beatriz Rosales-Reina,
  • Guillermo Cruz-Quesada,
  • Pablo Pujol,
  • Santiago Reinoso,
  • César Elosúa,
  • Gurutze Arzamendi,
  • María Victoria López-Ramón and
  • Julián J. Garrido

19 December 2025

Hybrid silica xerogels functionalised with chlorinated organosilanes combine tunable porosity and surface chemistry, rendering them attractive for applications in sensing, membrane technology, and photonics. This study quantitatively investigates the...

  • Article
  • Open Access
2 Citations
1,674 Views
27 Pages

Thermal Stability and Decomposition Mechanisms of PVA/PEGDA–PEGMA IPN-Hydrogels: A Multimethod Kinetic Approach

  • Akmaral Zh. Sarsenbekova,
  • Ulygbek B. Tuleuov,
  • Akerke T. Kazhmuratova,
  • Abylaikhan N. Bolatbay,
  • Lyazzat Zh. Zhaparova and
  • Yerkeblan M. Tazhbayev

21 October 2025

This paper presents a comprehensive analysis of the thermal stability and decomposition mechanisms of IPN hydrogels based on polyvinyl alcohol (PVA) and a copolymer network of poly(ethylene glycol) diacrylate–poly(ethylene glycol) methacrylate...

  • Article
  • Open Access
3 Citations
1,480 Views
23 Pages

A Hybrid Method Based on Corrected Kinetic Energy and Statistical Calculation for Real-Time Transient Stability Evaluation

  • Mehran Keivanimehr,
  • Mehdi Zareian Jahromi,
  • Harold R. Chamorro,
  • Mohammad Reza Mousavi Khademi,
  • Elnaz Yaghoubi,
  • Elaheh Yaghoubi and
  • Vijay K. Sood

31 October 2024

This paper proposes an innovative transient stability index (TSI) designed to enhance the real-time assessment of power system stability. The TSI integrates a corrected kinetic energy approach with a modified equal area criterion, offering a novel me...

  • Article
  • Open Access
2 Citations
1,715 Views
44 Pages

Synthesis and Characterization of Bio-Composite Based on Urea–Formaldehyde Resin and Hydrochar: Inherent Thermal Stability and Decomposition Kinetics

  • Bojan Janković,
  • Vladimir Dodevski,
  • Marija Janković,
  • Marija Milenković,
  • Suzana Samaržija-Jovanović,
  • Vojislav Jovanović and
  • Milena Marinović-Cincović

16 May 2025

This work reports a study on the structural characterization, evaluation of thermal stability, and non-isothermal decomposition kinetics of urea–formaldehyde (UF) resin modified with hydrochar (obtained by the hydrothermal carbonization of spen...

  • Article
  • Open Access
2 Citations
1,063 Views
19 Pages

Mathematics and physics are deeply interconnected. In fact, physics relies on mathematical tools like calculus and differential equations. The aim of this article is to introduce tempered Riemann–Liouville (RL) fractional operators and their pr...

  • Article
  • Open Access
780 Views
17 Pages

13 November 2025

The aim of this study was to compare the effectiveness of edible oil (as an extractant) for the extraction of CA (carnosic acid), C (carnosol), and RA (rosmarinic acid) from sage with popular solvents (methanol, ethanol, 70% methanol, 70% ethanol, an...

  • Article
  • Open Access
11 Citations
2,615 Views
20 Pages

Analysis of the Crystallization Kinetics and Thermal Stability of the Amorphous Mg72Zn24Ca4 Alloy

  • Bartosz Opitek,
  • Janusz Lelito,
  • Michał Szucki,
  • Grzegorz Piwowarski,
  • Łukasz Gondek and
  • Łukasz Rogal

26 June 2021

The aim of this study was to analyze the crystallization of the Mg72Zn24Ca4 metallic glass alloy. The crystallization process of metallic glass Mg72Zn24Ca4 was investigated by means of the differential scanning calorimetry. The glass-forming ability...

  • Article
  • Open Access
7 Citations
3,812 Views
23 Pages

9 May 2024

Acerola (Malpighia emarginata DC.) is a sub-tropical and tropical fruit renowned for its high levels of vitamin C and phenolic compounds, which offer health benefits. This study aimed to optimize the spray drying process by determining the inlet and...

  • Article
  • Open Access
49 Citations
9,606 Views
17 Pages

2 November 2012

Sol-gel entrapment is an efficient immobilization technique that allows preparation of robust and highly stable biocatalysts. Lipase from Candida antarctica B was immobilized by sol-gel entrapment and by sol-gel entrapment combined with adsorption on...

  • Article
  • Open Access
14 Citations
4,503 Views
12 Pages

29 October 2021

Amphoteric amphiphilic compounds, due to their unique properties, may represent a group of safe and biocompatible surface-active agents for effective colloidal stabilization of nanoformulations. For this reason, the aim of this work was to develop an...

  • Feature Paper
  • Article
  • Open Access
32 Citations
3,957 Views
12 Pages

Thermal Stability and Kinetics of Formation of Magnesium Oxychloride Phase 3Mg(OH)2∙MgCl2∙8H2O

  • Michal Lojka,
  • Ondřej Jankovský,
  • Adéla Jiříčková,
  • Anna-Marie Lauermannová,
  • Filip Antončík,
  • David Sedmidubský,
  • Zbyšek Pavlík and
  • Milena Pavlíková

7 February 2020

In this paper, magnesium oxychloride cement with stoichiometry 3Mg(OH)2∙MgCl2∙8H2O (MOC 3-1-8) was prepared and characterized. The phase composition and kinetics of formation were studied by X-ray diffraction (XRD) and Rietveld analysis of obtained d...

  • Article
  • Open Access
1,235 Views
15 Pages

Protein stabilization in white wines commonly involves bentonite fining, yet the influence of bentonite type, dosage, and pre-fermentative treatment on wine composition and fermentation remains underexplored. This study assessed the effects of pre-fe...

  • Article
  • Open Access
3 Citations
3,854 Views
28 Pages

A Bridge too Far? Comparison of Transition Metal Complexes of Dibenzyltetraazamacrocycles with and without Ethylene Cross-Bridges: X-ray Crystal Structures, Kinetic Stability, and Electronic Properties

  • Ashlie N. Walker,
  • Megan A. Ayala,
  • Somrita Mondal,
  • Mackenzie C. Bergagnini,
  • Phuong John D. Bui,
  • Stephanie N. Chidester,
  • Chad I. Doeden,
  • Louise Esjornson,
  • Brian R. Sweany and
  • Timothy J. Hubin
  • + 4 authors

16 January 2023

Tetraazamacrocycles, cyclic molecules with four nitrogen atoms, have long been known to produce highly stable transition metal complexes. Cross-bridging such molecules with two-carbon chains has been shown to enhance the stability of these complexes...

  • Article
  • Open Access
23 Citations
5,599 Views
15 Pages

Bio-oils employed for various industrial purposes, such as biodiesel production, undergo extensive oxidation and degradation during transformation processes. Therefore, it is extremely important to predict their stability at high temperature. We repo...

  • Article
  • Open Access
1 Citations
3,460 Views
17 Pages

5 September 2021

A simple, precise, and accurate reversed-phase ultra-performance liquid chromatographic (UPLC) method was developed and validated for the determination of a mycophenolic acid-curcumin (MPA-CUR) conjugate in buffer solutions. Chromatographic separatio...

  • Review
  • Open Access
11 Citations
11,306 Views
10 Pages

The Nature of Stability in Replicating Systems

  • Nathaniel Wagner and
  • Addy Pross

15 February 2011

We review the concept of dynamic kinetic stability, a type of stability associated specifically with replicating entities, and show how it differs from the well-known and established (static) kinetic and thermodynamic stabilities associated with regu...

  • Article
  • Open Access
18 Citations
8,900 Views
15 Pages

Comparative Solid-State Stability of Perindopril Active Substance vs. Pharmaceutical Formulation

  • Valentina Buda,
  • Minodora Andor,
  • Adriana Ledeti,
  • Ionut Ledeti,
  • Gabriela Vlase,
  • Titus Vlase,
  • Carmen Cristescu,
  • Mirela Voicu,
  • Liana Suciu and
  • Mirela Cleopatra Tomescu

This paper presents the results obtained after studying the thermal stability and decomposition kinetics of perindopril erbumine as a pure active pharmaceutical ingredient as well as a solid pharmaceutical formulation containing the same active pharm...

  • Article
  • Open Access
5 Citations
3,866 Views
18 Pages

Accelerating Kinetic Parameter Identification by Extracting Information from Transient Data: A Hydroprocessing Study Case

  • Ngoc-Yen-Phuong Cao,
  • Benoit Celse,
  • Denis Guillaume,
  • Isabelle Guibard and
  • Joris W. Thybaut

26 March 2020

Hydroprocessing reactions require several days to reach steady-state, leading to long experimentation times for collecting sufficient data for kinetic modeling purposes. The information contained in the transient data during the evolution toward the...

  • Article
  • Open Access
41 Citations
12,552 Views
20 Pages

Comprehensive Stability Study of Vitamin D3 in Aqueous Solutions and Liquid Commercial Products

  • Žane Temova Rakuša,
  • Mitja Pišlar,
  • Albin Kristl and
  • Robert Roškar

Vitamin D3 has numerous beneficial effects, such as musculoskeletal, immunomodulatory, and neuroprotective. However, its instability is the main obstacle to formulating quality products. Despite increased attention and growing use, data on vitamin D3...

  • Article
  • Open Access
34 Citations
10,622 Views
26 Pages

8 April 2010

In this paper, the structural properties of chemical reaction systems obeying the mass action law are investigated and related to the physical and chemical properties of the system. An entropy-based Lyapunov function candidate serves as a tool for pr...

  • Article
  • Open Access
144 Citations
14,232 Views
15 Pages

8 May 2014

Thymoquinone (TQ) is a potent anticancer phytochemical with confirmed in vitro efficacy. Its clinical use has not yet established, and very few reports have documented its formulation. There also are no reports about the aqueous solubility and stabil...

  • Review
  • Open Access
206 Citations
16,107 Views
23 Pages

24 August 2021

Anthocyanins are colored valuable biocompounds, of which extraction increases globally, although functional applications are restrained by their limited environmental stability. Temperature is a critical parameter of food industrial processing that i...

  • Article
  • Open Access
1 Citations
1,068 Views
12 Pages

Surface Microstructure Engineering for Enhancing Li-Ion Diffusion and Structure Stability of Ni-Rich Cathode Materials

  • Huanming Zhuo,
  • Shuangshuang Zhao,
  • Ruijie Xu,
  • Lu Zhou,
  • Ye Li,
  • Yuehuan Peng,
  • Xuelong Rao,
  • Yuqiang Tao and
  • Xing Ou

24 July 2025

Surface microstructure of grains vastly decides the electrochemical performance of nickel-rich oxide cathodes, which can improve their interfacial kinetics and structural stability to realize their further popularization. Herein, taking the represent...

  • Article
  • Open Access
7 Citations
4,718 Views
11 Pages

Thermal Degradation Process of Ethinylestradiol—Kinetic Study

  • Sebastian Simu,
  • Adriana Ledeţi,
  • Elena-Alina Moacă,
  • Cornelia Păcurariu,
  • Cristina Dehelean,
  • Dan Navolan and
  • Ionuţ Ledeţi

2 August 2022

The present study reports the results obtained after the analysis of the thermal stability and decomposition kinetics of widely used synthetic derivative of estradiol, ethinylestradiol (EE), as a pure active pharmaceutical ingredient. As investigatio...

  • Article
  • Open Access
32 Citations
7,057 Views
21 Pages

Self-Emulsifying Drug Delivery Systems (SEDDS): Measuring Energy Dynamics to Determine Thermodynamic and Kinetic Stability

  • Fiza Ur Rehman,
  • Arshad Farid,
  • Shefaat Ullah Shah,
  • Muhammad Junaid Dar,
  • Asim Ur Rehman,
  • Naveed Ahmed,
  • Sheikh Abdur Rashid,
  • Irfan Shaukat,
  • Muddaser Shah and
  • Kifayat Ullah Shah
  • + 4 authors

26 August 2022

This research was designed to identify thermodynamically and kinetically stable lipidic self-emulsifying formulations through simple energy dynamics in addition to highlighting and clarifying common ambiguities in the literature in this regard. Propo...

  • Article
  • Open Access
17 Citations
4,694 Views
15 Pages

Kinetic Stability of Si2C5H2 Isomer with a Planar Tetracoordinate Carbon Atom

  • Krishnan Thirumoorthy,
  • Vijayanand Chandrasekaran,
  • Andrew L. Cooksy and
  • Venkatesan S. Thimmakondu

31 December 2020

Dissociation pathways of the global minimum geometry of Si2C5H2 with a planar tetracoordinate carbon (ptC) atom, 2,7-disilatricyclo[4.1.0.01,3]hept-2,4,6-trien-2,7-diyl (1), have been theoretically investigated using density functional theory and cou...

  • Article
  • Open Access
1 Citations
2,299 Views
25 Pages

This paper is devoted to the comparison of discrete velocity models used for simulation of compressible flows with arbitrary specific heat ratios in the lattice Boltzmann method. The stability of the governing equations is analyzed for the steady flo...

  • Article
  • Open Access
1 Citations
2,940 Views
17 Pages

2 December 2024

In low-inertia systems with a high penetration of renewable energy, the rotational kinetic energy and inertia constant are significant factors in determining frequency stability. The energy released owing to the frequency decrease during contingency...

  • Feature Paper
  • Review
  • Open Access
157 Citations
17,730 Views
36 Pages

12 February 2021

Ionic liquids (ILs) are the safest solvent in various high-temperature applications due to their non-flammable properties. In order to obtain their thermal stability properties, thermogravimetric analysis (TGA) is extensively used to analyze the kine...

  • Review
  • Open Access
18 Citations
10,179 Views
15 Pages

Light Chain Stabilization: A Therapeutic Approach to Ameliorate AL Amyloidosis

  • Gareth J. Morgan,
  • Joel N. Buxbaum and
  • Jeffery W. Kelly

5 October 2021

Non-native immunoglobulin light chain conformations, including aggregates, appear to cause light chain amyloidosis pathology. Despite significant progress in pharmacological eradication of the neoplastic plasma cells that secrete these light chains,...

  • Article
  • Open Access
23 Citations
5,578 Views
35 Pages

Dry-Jet Wet Spinning of Thermally Stable Lignin-Textile Grade Polyacrylonitrile Fibers Regenerated from Chloride-Based Ionic Liquids Compounds

  • Muhannad Al Aiti,
  • Amit Das,
  • Mikko Kanerva,
  • Maija Järventausta,
  • Petri Johansson,
  • Christina Scheffler,
  • Michael Göbel,
  • Dieter Jehnichen,
  • Harald Brünig and
  • Gert Heinrich
  • + 4 authors

20 August 2020

In this paper, we report on the use of amorphous lignin, a waste by-product of the paper industry, for the production of high performance carbon fibers (CF) as precursor with improved thermal stability and thermo-mechanical properties. The precursor...

  • Article
  • Open Access
11 Citations
8,125 Views
16 Pages

3 May 2011

Divalent metal ions are essential for the efficient catalysis and structural stability of many nucleotidyl-transfer enzymes. Poly(A)-specific ribonuclease (PARN) belongs to the DEDD superfamily of 3'-exonucleases, and the active site of PARN contains...

  • Article
  • Open Access
62 Citations
6,499 Views
18 Pages

Cold Crystallization Kinetics and Thermal Degradation of PLA Composites with Metal Oxide Nanofillers

  • Evangelia Tarani,
  • Klementina Pušnik Črešnar,
  • Lidija Fras Zemljič,
  • Konstantinos Chrissafis,
  • George Z. Papageorgiou,
  • Dimitra Lambropoulou,
  • Alexandra Zamboulis,
  • Dimitrios N. Bikiaris and
  • Zoi Terzopoulou

27 March 2021

Poly(lactic acid) (PLA) nanocomposites with antimicrobial fillers have been increasingly explored as food packaging materials that are made of a biobased matrix and can minimize food loss due to spoilage. Some of the most commonly studied fillers are...

  • Article
  • Open Access
23 Citations
5,490 Views
16 Pages

Repurposing Benzbromarone for Familial Amyloid Polyneuropathy: A New Transthyretin Tetramer Stabilizer

  • Ellen Y. Cotrina,
  • Ângela Oliveira,
  • José Pedro Leite,
  • Jordi Llop,
  • Luis Gales,
  • Jordi Quintana,
  • Isabel Cardoso and
  • Gemma Arsequell

28 September 2020

Transthyretin (TTR) is a homotetrameric protein involved in human amyloidosis, including familial amyloid polyneuropathy (FAP). Discovering small-molecule stabilizers of the TTR tetramer is a therapeutic strategy for these diseases. Tafamidis, the on...

  • Review
  • Open Access
20 Citations
10,399 Views
23 Pages

Protein Stability, Folding and Misfolding in Human PGK1 Deficiency

  • Giovanna Valentini,
  • Maristella Maggi and
  • Angel L. Pey

18 December 2013

Conformational diseases are often caused by mutations, altering protein folding and stability in vivo. We review here our recent work on the effects of mutations on the human phosphoglycerate kinase 1 (hPGK1), with a particular focus on thermodynamic...

  • Feature Paper
  • Article
  • Open Access
131 Citations
9,862 Views
16 Pages

6 September 2019

A large quantity of food waste (FW) is generated annually across the world and results in environmental pollution and degradation. This study investigated the performance of a 160 L anaerobic biofilm single-stage reactor in treating FW. The reactor w...

  • Article
  • Open Access
6 Citations
4,933 Views
12 Pages

Superior Stability of Hydroxysafflor Yellow A in Xuebijing Injection and the Associated Mechanism

  • Weiling Pu,
  • Huijie Zhang,
  • Meng Wang,
  • Yanan Liu,
  • Lili Sun and
  • Xiaoliang Ren

2 December 2017

Hydroxysafflor yellow A (HSYA) is the main bioactive ingredient of XBJ injection. At first, the stability of HSYA in solution and in a Xuebijing injection was investigated, then the mechanisms of the increased stability of HSYA in the XBJ injection w...

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