Academic literature on the topic 'External gelation technique'

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Journal articles on the topic "External gelation technique"

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Utami, Ratna Annisa, Sukmadjaja Asyarie, and Sasanti Tarini Darijanto. "Pembuatan Sediaan Oral Sustained Release Metformin HCl dalam Bentuk Mikrosfer Pautan Silang Alginat." Acta Pharmaceutica Indonesia 38, no. 3 (2013): 100–109. http://dx.doi.org/10.5614/api.v38i3.5222.

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Metformin hidroklorida (MH) memiliki bioavailabilitas yang relatif rendah dan waktu paruh pendek sehingga dibutuhkan sediaan dengan sistem sustained release, salah satu bentuknya adalah mikrosfer. Pembuatan mikrosfer dilakukan dengan cara teknik emulsifikasi diikuti pautan silang dengan ion kalsium secara gelasi internal dan eksternal. Hasil menunjukkan mikrosfer mengandung MH yang dihasilkan dengan metode emulsifikasi-gelasi eksternal lebih baik dibandingkan dengan gelasi internal dilihat dari efisiensi penjeratan, bentuk dan karakteristik mikrosfer serta distribusi ukuran partikel. Hasil Sca
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Song, Huiyi, Weiting Yu, Meng Gao, Xiudong Liu, and Xiaojun Ma. "Microencapsulated probiotics using emulsification technique coupled with internal or external gelation process." Carbohydrate Polymers 96, no. 1 (2013): 181–89. http://dx.doi.org/10.1016/j.carbpol.2013.03.068.

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Stephen, Olaribigbe Majekodunmi, and Enomfon Akpan Ekefre-Abasi. "Comparative Study for In-vitro Evaluation of Metronidazole Prepared Using Natural Chitosan from Oyster Shells of Egeria radiata." British Journal of Pharmaceutical Research 17, no. 1 (2017): 1–11. https://doi.org/10.9734/BJPR/2017/33247.

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<strong>Objective: </strong>The present study investigates the capability of preparing metronidazole loaded microspheres employing a natural chitosan extracted from oyster shells of <em>Egeria radiata</em>. <strong>Methods:</strong> Microspheres were prepared by external gelation technique using tripolyphosphate (TPP) as the cross-linker. The drug to polymer ratio was selected at various levels of polymer-drug quantities with varying amount of TPP. The prepared microspheres were characterized for % yield, drug entrapment efficiency, surface morphology and drug release profile. <strong>Results:
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Vinod, Mokale, Naik Jitendra, Khairnar Gayatri, and Khairnar Gokul. "Formulation and Development of Diltiazem Hydrochloride Sustained Release Alginate Beads by Ionotropic External Gelation Technique." Advances in Pharmacology and Pharmacy 1, no. 3 (2013): 139–43. http://dx.doi.org/10.13189/app.2013.010304.

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Sriram, Nagarajan, and Prakash Katakam. "Formulation and Evaluation of Mucoadhesive Microspheres of Pioglitazone Hydrochloride Prepared by Ionotropic External Gelation Technique." Journal of Encapsulation and Adsorption Sciences 06, no. 01 (2016): 22–34. http://dx.doi.org/10.4236/jeas.2016.61003.

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Fujiwara, Gislene Mari, Ranieri Campos, Camila Klocker Costa, et al. "Production and characterization of alginate-starch-chitosan microparticles containing stigmasterol through the external ionic gelation technique." Brazilian Journal of Pharmaceutical Sciences 49, no. 3 (2013): 537–47. http://dx.doi.org/10.1590/s1984-82502013000300015.

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Stigmasterol - a plant sterol with several pharmacological activities - is susceptible to oxidation when exposed to air, a process enhanced by heat and humidity. In this context, microencapsulation is a way of preventing oxidation, allowing stigmasterol to be incorporated into various pharmaceutical forms while increasing its absorption. Microparticles were obtained using a blend of polymers of sodium alginate, starch and chitosan as the coating material through a one-stage process using the external gelation technique. Resultant microparticles were spherical, averaging 1.4 mm in size. Encapsu
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Ingrid, Vieira Fernandes Monteiro, Roberto Silva de Melo Bruno, and Braga Dornelas Camila. "EFFECT OF DRYING ON THE ENCAPSULATION OF BEAUVERIA BASSIANA IN A POLYMERIC NANOCOMPOSITE MATRIZ." International Journal of Advances in Engineering and Technology (IJAET) 18, no. 2 (2025): 29–39. https://doi.org/10.5281/zenodo.15478478.

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The use of polymeric matrices in the encapsulation of entomopathogenic fungi ensures the preservation of the inherent characteristics of the fungi, protecting them against external factors. However, depending on the dehydration technique used, the encapsulation capacity of the bioactive compound may be compromised. Thus, an encapsulation matrix in the form of beads of the fungus Beauveria bassiana composed of alginate and bentonite was developed through ionotropic gelation and subjected to different drying techniques. The matrix was characterized using XRPD and FTIR techniques, which confirmed
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Li, Xuan, Zhansheng Wu, Yanhui He, Bang-Ce Ye, and Jun Wang. "Preparation and characterization of monodisperse microcapsules with alginate and bentonite via external gelation technique encapsulating Pseudomonas putida Rs-198." Journal of Biomaterials Science, Polymer Edition 28, no. 14 (2017): 1556–71. http://dx.doi.org/10.1080/09205063.2017.1335075.

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Lebedieva, Kateryna, Dmytro Matiukhov, Ganna Cherkashina, Illia Tereshchenko, and Yevheniia Lytvynenko. "CURRENT TRENDS IN THE USE OF BIOLOGICALLY ACTIVE GEL-FORMING POLYSACCHARIDES IN THE FOOD INDUSTRY, COSMETOLOGY AND MEDICINE." Bulletin of the National Technical University "KhPI". Series: Chemistry, Chemical Technology and Ecology, no. 1(13) (June 3, 2025): 67–73. https://doi.org/10.20998/2079-0821.2025.01.10.

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The article reviews current trends in the use of biologically active gel-forming polysaccharides in the food industry, cosmetology and medicine. It is shown that polysaccharides and their derivatives of natural origin have recently acquired important importance for technologies related to human health care. A wide range of possibilities and examples of the application of some of these substances is due to their ability to form stable spatial structures with the participation of water and, as a result, increase viscosity, stabilize dispersions, and form gels. The state of the system in each cas
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Sahithi, Malapati Lakshmi, Venugopalaiah Penabaka, and Yadala Prapurna Chandra. "Formulation and characterization of capecitabine muco adhesive beads for the treatment of colorectal cancer." International Journal of Clinical Pharmacokinetics and Medical Sciences 5, no. 1 (2025): 1–11. https://doi.org/10.26452/ijcpms.v5i1.699.

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This study focuses on the formulation and characterisation of Capecitabine muco-adhesive beads for the treatment of colorectal cancer. The alginate beads were synthesised using the ionotropic external gelation technique. To maximise encapsulation efficiency and control the release of Capecitabine from the alginate beads, precise formulation conditions were implemented. Results from in vitro dissolution studies revealed that formulations incorporating increasing concentrations of sodium alginate with SCMC released the drug more rapidly compared to those formulated with sodium alginate and HPMC.
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Books on the topic "External gelation technique"

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Furst, Eric M., and Todd M. Squires. Microrheology. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199655205.001.0001.

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We present a comprehensive overview of microrheology, emphasizing the underlying theory, practical aspects of its implementation, and current applications to rheological studies in academic and industrial laboratories. Key methods and techniques are examined, including important considerations to be made with respect to the materials most amenable to microrheological characterization and pitfalls to avoid in measurements and analysis. The fundamental principles of all microrheology experiments are presented, including the nature of colloidal probes and their movement in fluids, soft solids, an
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Book chapters on the topic "External gelation technique"

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Boi Stefania, Dellacasa Elena, Rouatbi Nadia, Monticelli Orietta, and Pastorino Laura. "Multicompartment Hydrogels for the Local Delivery of Chemotherapic Drugs." In Studies in Health Technology and Informatics. IOS Press, 2019. https://doi.org/10.3233/978-1-61499-975-1-261.

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Over 85% of human cancers are solid tumors. The effectiveness of anticancer therapy in solid tumors depends on adequate delivery of the therapeutic agent to tumor cells. Inadequate delivery would result in residual tumor cells, which in turn would lead to regrowth of tumors and possibly development of resistant cells. The most prominent option, for now, is the local delivery of chemotherapic drugs into the cavity resection of the tumor. However, the burst release of massive concentrations of the drugs usually boosts the side effects of chemotherapy. Aiming to block the burst release a new drug
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Conference papers on the topic "External gelation technique"

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Shehata, A. M., N. Kalia, and R. Comer. "Advancing Isolation Techniques for Geothermal Wells: Development of Polymer and Nanoparticle System." In SPE Canadian Energy Technology Conference and Exhibition. SPE, 2024. http://dx.doi.org/10.2118/218052-ms.

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Abstract Geothermal energy has emerged as a promising renewable energy source with its continuous availability and independence from weather conditions. However, the development of geothermal wells faces various challenges that limit its widespread adoption. One of these challenges is the decline in the efficiency of geothermal wells over time due to the reduction in permeability and scale formation. Acidizing is a common technique used to enhance productivity of the wells. During the stimulation of these geothermal wells, there is a need to temporarily block the high permeability zones for su
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Leng, Rui, Oliver Uitz, Zoubeida Ounaies, and Carolyn Seepersad. "Design and Characterization of a Multilayered Multifield-Actuated Polymer Unimorph." In ASME 2021 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/smasis2021-68238.

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Abstract In this study, we design, fabricate and characterize a novel unimorph-like structure in which a shape memory polymer (SMP) is actuated using a magneto-active elastomer (MAE), resulting in contactless and large deformation shape change. The constituent materials are: a two-part elastomer, iron oxide microparticles, and a rapid cure epoxy. Combining the elastomer with the iron oxide particles results in an MAE actuator, such that application of an external magnetic field induces dipoles in the iron oxide particles, resulting in the actuation of the MAE. The shape memory epoxy polymers a
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Masoumi, Navid, Negar Kazemipour, Sarvin Ghiasi, et al. "WaveLeNet: Transfer Neural Calibration for Embedded Sensing in Soft Robots." In THE HAMLYN SYMPOSIUM ON MEDICAL ROBOTICS. The Hamlyn Centre, Imperial College London London, UK, 2023. http://dx.doi.org/10.31256/hsmr2023.35.

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Soft robots have exhibited excellent compatibility with functional and physical requirements of intraluminal procedures such as bronchoscopy and cardiovascular intervention [1]. Despite their favourable mechanical compliance and scalable design, integrating miniature force and shape sensors on them is cumbersome [2]. Also, large mechanical deformation of such robots, i.e., flexures, may push traditional rigid sensors out of their linear range [3]. As an alternative approach, the authors have recently introduced a novel soft sensing method and soft embedded sensors for flexures that exhibited l
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