Gels - Science topic

Dear colleagues, I am pleased to announce that I am guest editor of the Special Issue “Advances in Hydrogels for Tissue Engineering” which will be published in Gels (ISSN 2310-2861; IF: 4.432, ranking Q1 in Polymer Science). The cited special issue is now open to receive submissions of full research articles and comprehensive review papers for pee...

Starches from some legume grown in Cameroon were evaluated for their granule structure and size, turbidity, firmness and gel strength, thermal and freeze-thaw properties. Amylose contents were in the range of 26.21%–44.85%. Morphological analysis of the starch granules showed bimodal distribution, multiple sizes and shapes from small spherical to t...

Call for Papers: Gel Encapsulated Nanoparticles_https://www.mdpi.com/journal/gels/special_issues/38049U32E1

Previously acquired data could be utilised in predicting glass dissolution kinetics at long times, but the application of machine learning methods needs to be assessed. Here, the dissolution processes of two Li-Na borosilicate 'base glasses' at 40 and 90 °C were investigated by SEM-EDS, NMR and Raman spectroscopy. Boron and sodium machine learning...

The removal of turbidity is a prime objective in the treatment of seawater, especially in the production of potable water. The water turbidity exists because of the colloidal particles or large-weight molecules that remain in suspension in the untreated solution. This study investigated the performance of a new gel layer for the treatment of highly...

Long-term corticosteroid use in immune-mediated diseases is associated with increased risk of adverse events (AEs) and worsened health-related quality of life (HRQoL). Previous studies report chronic high-dose corticosteroid therapy results in higher rates of healthcare resource use and AE-related medical costs. Recent studies suggest Acthar® Gel (...

Acrylic materials exhibit favorable grouting repair performance. However, their curing products are easily inclined to drying shrinkage, and their concrete impermeability repair characteristics have seldom been investigated. To improve material properties, reveal the impermeability repair mechanism, and address drying shrinkage, this study proposed...

Common konjac flour, especially of low grade, is a waste material produced in large quantities during purification of konjac glucomannan (KGM). It contains impurities, particularly oxalate salts, which irritate and may cause kidney stones. Konjac flour has glucomannan as a main component. Glucomannan is characterized by low crystallinity, high ther...

Polymer gel‐based pressure sensors offer numerous advantages over traditional sensing technologies, including excellent conformability and integration into wearable devices. However, challenges persist in terms of their performance and manufacturing technology. In this study, a method for fabricating gel pressure sensors using a hydrophobic/hydroph...

Acne vulgaris is characterized by inflammatory and non-inflammatory skin lesions with a high prevalence among adolescents in India. Not enough studies are reported on the use of topical antibiotics for the management of acne in the Indian population. The proposed study aims to compare the efficacy and safety of topical minocycline gel 4% with topic...

A pandemia de Covid-19 produziu repercussões econômicas e sociais imensas no Brasil, expôs grupos vulneráveis e dificultou para muitos o acesso a alimentação e medicamentos. Assim, nosso objetivo foi ilustrar as ações sociais realizadas pelo projeto de extensão “Medicina Veterináriana promoção da saúde humana e animal: ações em comunidades carentes...

ntroduction: The present study aimed to extend a novel vehicle for sustained delivery of risperidone to improve schizophrenia therapy. Risperidone is used as an anti-psychotic drug to treat various psychological conditions. Lipid liquid crystal (LLC) gel containing various lipids, solvents, and stabilizers turns into a sustain-release gel in contac...

Entomopathogenic nematodes in the genera Steinernema and Heterorhabditis, produced through in vitro or in vivo methods, are effective insect biological control agents. In vivo production yields good-quality nematodes, but the costs associated with obtaining insects and labor make this production system have a low economy of scale. Conceivably, if g...

The mechanical properties of calcium-silicate-hydrate (C-S-H) gels in cementitious materials are mainly realized by nanoindentation experiments. There is limited research on the dynamic response of the molecular structure of C-S-H under nanoindentation conditions. This study simulated the nanoindentation on the C-S-H gel samples by the molecular dy...

The first stages of siderite crystallization are of a paramount importance to develop a better CO 2 corrosion model. Williams et al. (2015) reported a tremendous experimental effort where they followed the formation of crystalline siderite by X-ray diffraction, while a constant anodic potential was applied on a carbon steel electrode. The condition...

La ruptura o filtración de los implantes de la glándula mamaria hacen necesario retirar el silicón del bolsillo periprotésico, por lo que se plantea el uso de una sustancia inocua que permita eliminar la mayor cantidad del mismo. El objetivo del presente estudio fue evaluar la posibilidad de la existencia de un disolvente del polimetilsiloxano, bio...

Electrocardiogram (ECG) signals are often measured for medical purposes and in sports. While common Ag/AgCl glued gel electrodes enable good electrode skin contact, even during movements, they are not comfortable and can irritate the skin during long-term measurements. A possible alternative is textile electrodes, which have been investigated exten...

This work reviews the use of atomic force microscopy (AFM) as a tool to investigate oleogels of edible triglyceride oils. Specific attention is given to those oleogels based on phytosterols and their esters, a class of material the authors have studied extensively. This work consists of a summary of the role of AFM in imaging edible oleogels, inclu...

Although ionic hydrogels have been developed recently for innovative wearable electronics, they necessitate high humidity to diffuse ions in water and fast self‐healing, which negatively impacts their performance and stability in ambient conditions (e.g., dry environments). In this study, a series of p‐ and n‐type polymeric ionic gels (PIGs) with d...

Abstract The objective of this paper was to develop and evaluate two semi-solid pharmaceutical forms containing 0.1% tacrolimus: cream (CRT01) and gel (GLT01). For the evaluation of physicochemical stability, at times 0, 30, 60 and 90 days, at 23°C and at 40°C, High Performance Liquid Chromatography coupled with a Diode Array Detector (HPLC-DAD) wa...

Hidrogel merupakan polimer yang mengalami ikat silang dan digunakan pada berbagai aplikasi termasuk untuk media tanam. Kemampuan utamanya yaitu dapat menyerap dan mengikat air dalam jumlah yang besar. Salah satu jenis hidrogel yang telah banyak dikembangkan sebagai media tanam adalah hidrogel dari poliakrilat. Namun, hidrogel dengan bahan utama pol...

Gastropods, such as snails and slugs, can excrete mucus to aid in movement and adhesion. However, very few studies have examined the physical relationship between mucus composition and function. Here, we explore the role of mucus polymers (specifically their proteins) and their influence on the material properties of locomotive mucus. Using a range...

Supramolecular gels are physically cross-linked hydrogels formed by non-covalent interactions. The synthesis, structure optimization, property regulation, and application expansion of supramolecular gels has gradually become the research hotspot in the field of gel materials. According to the non-covalent interactions such as hydrophobic associatio...

Objectives. The creation of new herbal medicines for their use in dentistry is relevant. The purpose of this work is to study the acute toxicity of the anticaries dental gel (ACDG3) developed by us based on Origanum vulgare. Results. In case of studying the safety of anticaries dental gel “ACDG3” in animals, that with a single dose of up to 2000 mg...

In this paper, we present a soft and moisturizing film electrode based on bacterial cellulose and Ag/AgCl conductive cloth as a potential replacement for gel electrode patches in electroencephalogram (EEG) recording. The electrode materials are entirely flexible, and the bacterial cellulose membrane facilitates convenient adherence to the skin. EEG...

Due to the high brittleness of poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), ethylene-vinyl acetate copolymer (EVA) was incorporated to prepare PHBV/EVA blends by melt blending, and the compatibility of the blends was improved by benzoyl peroxide (BPO). The research found that the addition of BPO triggered the production of free radicals in...

Objective: A phenylbutenoid extract (PE) was obtained from Zingiber cassumunar rhizomes. Phenylbutenoids; namely DMPBD, compound D, and compound D acetate, have been identified as major anti-inflammatory and analgesic constituents. This present study aimed to formulate a gel containing PE that could be used as an alternative ultrasound gel for acut...

In this article, we will write about energy storage batteries produced by photoelectric systems, their types and their charging process and stages. The charging are givenlevel of AGM and GEL batteries and their optimal charging algorithm .

Nanoscale zero-valent iron (NZVI) is a material that is extensively applied for water pollution treatment, but its poor dispersibility, easy oxidation, and inconvenient collection limit its application. To overcome these drawbacks and limit secondary contamination of nanomaterials, we confine NZVI supported by reduced graphene oxide (rGO) in the sc...

Many culturally important historic buildings contain fibrous plaster ceilings. The collapse at London’s Apollo Theatre in 2013, which injured 88 people, highlighted the importance of inspecting and restoring ceilings effectively. This study focuses on traditional and modern materials which are applied to the topsides of existing historic fibrous pl...

Nowadays, the global trends of bioeconomy and sustainability require the use of biobased raw materials in all scientific and application fields to reduce the global carbon dioxide fingerprint [...]

The aim of this in vitro study was to investigate the safety of using blue diode laser (445 nm) for tooth bleaching with regard to intrapulpal temperature increase operating at different average power and time settings. Fifty human mandibular incisors (n = 10) were used for evaluating temperature rise inside the pulp chamber and in the bleaching ge...

Achieving high energy density and long cycling life simultaneously remains the most critical challenge for aluminum-ion batteries (AIBs), especially for high-capacity conversion-type positive electrodes suffering from shuttle effect in strongly acidic electrolytes. Herein, we develop a layered quasi-solid AIBs system with double reaction zones (DRZ...

This study aimed to investigate the feasibility of applying 3D gel dosimeters for proton therapy. Two different formulations (5-5-3-5, 5-3-3-10) for the N-Isopropyl Acrylamide (NIPAM) polymer gel were used to find the best composition for the application of NIPAM polymer gels for proton therapy. The reaction of the gel under different physical cond...

The kinetic analysis of octogen coating with a polyurethane base containing hydroxyl-terminated polybutadiene (HTPB) was investigated using infrared spectroscopy. The coating process involved a solvent method, where octogen and liquid polyurethane were mixed, the solvent was evaporated, and curing took place at an elevated temperature. The ratio of...

A fluorescent and colorimetric poly (acrylamide)-based copolymer probe P(AAm-co-RBNCH) has been designed via free radical polymerization of a commercial acrylamide monomer with a rhodamine-functionalized monomer RBNCH. Metal ion selectivity of RBNCH was investigated by fluorescence and colorimetric spectrophotometry. Upon addition of Fe3+, a visual...

Background Lesion formation during catheter ablation is influenced by the power, contact force (CF), time, and catheter stability. However, the influence of the irrigation effects on lesion formation remains unknown. Methods An ex vivo experiment using conductive gel was performed. Using three different catheter designs (TactiFlex ™ SE [TF], Intel...

Clay slurries are both ubiquitous and essential in the oil exploration industry, and are most commonly employed as drilling fluids. Due to its natural abundance, bentonite clay is often the de facto choice for these materials. Understanding and predicting the mechanical response of these fluids is critical for safe and efficient drilling operations...

Acid-induced release of stored ions from polyacrylic acid hydrogels (with a free surface fully permeable to the ion and acid flux) was observed to increase the gel osmotic pressure that leads to rapid, temporary swelling faster than the characteristic solvent absorption rate of the gel. Here we develop a continuum poroelastic theory that quantitati...

Aerogels are nano-porous structured materials that are obtained from wet gels after employing various drying techniques to exchange their liquid portion by air while retaining the solid skeleton. Owing to their lightweight, excellent porosity, and high thermal resistance, aerogels find applications in various fields such as space technology for the...

Purpose: To review the latest evidence on the modern techniques and outcomes of kidney-sparing surgeries (KSS) in patients with upper tract urothelial carcinoma (UTUC). Methods: A comprehensive literature search on the study topic was conducted before 30 April 2023 using electronic databases including PubMed, MEDLINE, and EMBASE. A narrative overvi...

Jamu masih banyak digunakan oleh masyarakat Indonesia untuk pengobatan. BPOM melarang penggunaan Bahan Kimia Obat di dalam sediaan jamu. Penelitian ini bertujuan untuk melakukan validasi metode serta analisis kandungan allopurinol dan deksamethason di dalam jamu pegal Linu yang beredar di Kabupaten Semarang. Metode yang digunakan adalah KLT untuk a...

Jagung disebut salah satu komoditas unggulan daerah Jamin Ginting, Medan Tuntungan, Sumatera Utara. Penelitian ini untuk mengetahui apakah hemiselulosa dapat digunakan sebagai bahan dasar hidrogel dan untuk mendapatkan konsentrasi formulasi hidrogel terbaik dari kombinasi hemiselulosa pada tongkol jagung (Zea mays L.) dengan karbopol 940 sebagai se...

Lost circulation is a world-class problem, and the contradiction between plugging and unplugging in reservoirs is a problem that needs to be solved urgently. The traditional LCM is not suitable for reservoirs and the complex subsequent operations. Currently, a self-degrading plugging material is proposed. In this paper, a new self-degradation plugg...

In the present study, two different types of aerogels were synthesized using sol–gel route and ambient pressure drying. One was resorcinol formaldehyde aerogel modified with APTES (RF-A), while the other as silica aerogel modified with organic solvents (SA-OM). Both the aerogels were characterized using SEM, FTIR, and BET. The characterization resu...

Background: Hysteroscopic adhesiolysis is the preferred primary method for intrauterine adhesion. However, there is about a 60% of chance of re-adhesion after surgery. The objectives of the study were to evaluate the efficacy and safety of Yangmo decoction as a secondary treatment in preventing intrauterine re-adhesion against those of hyaluronic...

Hot-melt adhesives (HMAs) are thermoplastic materials that can bond various substrates by solidifying rapidly upon cooling from the molten state, and their modification with organosilicon compounds can result in crosslinking behavior, characteristic of gels. Organosilicon compounds are hybrid molecules that have both inorganic and organic component...

Drilling cuttings from the rock formation generated during the drilling process are generally smashed to fine particles through hydraulic cutting and grinding using a drilling tool, and then are mixed with the drilling fluid during circulation. However, some of these particles are too small and light to be effectively removed from the drilling flui...

Concrete material is an important engineering material for modern marine engineering construction, but the presence of chloride ions in sea sand and seawater can cause corrosion of reinforcing steel, which greatly endangers the safety of reinforced concrete structures. Gel is an environmental friendly functional material which has the functions of...

To overcome challenging service conditions, a groundbreaking thermoset, “Super-Tough Resin” (STR), has been specifically designed for steel bridge deck paving. Currently, investigations of paving thermosets mainly focus on cured materials. Detailed investigations of the curing process and its impact on the evolving properties of STR are lacking. Th...

Objective: The aim of this research is the Optimization, formulation, and evaluation of biosynthesis nanogold gels by using experimental design. Investigations were provided to optimize the biosynthesis of nanogold gels on a compound of two gelling agents and develop the biosynthesis of nanogold gels. Methods: The optimization of the formula of gel...

Electrocardiogram (ECG) electrodes are important sensors for detecting heart disease whose performance determines the validity and accuracy of the collected original ECG signals. Due to the large drawbacks (e.g., allergy, shelf life) of traditional commercial gel electrodes, textile electrodes receive widespread attention for their excellent comfor...

In this research, novel electroencephalogram (EEG) electrodes were developed to detect high-quality EEG signals without the requirement of conductive gels, skin treatments, or head shaving. These electrodes were created using electrically conductive hook fabric with a resistance of 1 Ω/sq. The pointed hooks of the conductive fabric establish direct...

Citation: Yousufi, M.M.; Dzulkarnain, I.b.; Elhaj, M.E.M.; Ahmed, S. A Perspective on the Prospect of Pickering Emulsion in Reservoir Conformance Control with Insight into the Influential Parameters and Characterization Techniques. Processes 2023, 11, 2672. Abstract: In reservoir conformance control, polymer gels and foams are majorly used; however...

Gas flooding and foam flooding are potential technologies for tertiary oil recovery in fractured-vuggy reservoirs. The development and mechanism research of fractured-vuggy reservoirs is difficult due to the complex structures and the strong heterogeneity of fractured-vuggy reservoirs. Visualization simulation is one of the effective methods to stu...

Mathematical models of polyelectrolyte gels are often simplified by assuming the gel is electrically neutral. The rationale behind this assumption is that the thickness of the electric double layer (EDL) at the free surface of the gel is small compared to the size of the gel. Hence, the thin-EDL limit is taken, in which the thickness of the EDL is...

nsan Gel şme Endeks , ülkeler nsan gel şmeye göre sıralamak ç n kullanılır. Yaşam beklent s , k ş başına düşen gel r ve eğ t m g b göstergeler çer r. Enflasyon, toplam taleb n toplam arzdan daha hızlı artması sonucunda standart b r satın alma gücü düzey ne göre ölçülen f yatlardak sürekl artışı fade eder. İşs zl k oranı, b r ekonom dek toplam s v l...

The anomalous viscosity of colloidal dispersions of silica has been known and studied for a long time. Several different mechanisms have been proposed to explain it, related to the electrical double layer, hydration layer, and porous/gel layer at the silica-water interface. However, it is still not entirely clear which mechanism is actually operati...

The objective of the research is to study the effect of different additives on the conventional concrete. In this term, three types of materials have been added to the concrete: gelatin powder as the binder, recycled aggregates, and almond shell as the fine and coarse aggregates. Several experiments have been made tо determine physical and mechanic...

Hydrogels (gels) are attractive tools for tissue engineering and regenerative medicine due to their potential for drug delivery and ECM-like composition. In this study, we use rheology to characterize GelMA/alginate gels loaded with human platelet lysate (PL). We then characterize these gels from a physicochemical perspective and evaluate their abi...

Synthesis of methylsilsesquioxane aerogels by ambient pressure drying instead of supercritical drying has recently emerged as a major trend, but the issues of low mechanical strength and unstable performance still need to be resolved. This work reveals the microscopic formation mechanisms of gel skeleton based on the kinetic characteristics of meth...

Graphene-based materials are considered excellent candidates to implement cementitious nanocomposites due to their mechanical properties. This paper presents a comprehensive interface interaction that ends up with computing the elastic properties for four models of the C−S−H gel, taking tobermorite 14 Å as an example, with reduced graphene oxide (r...