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Littérature scientifique sur le sujet « Natural Dosage Form »

Auteur : Grafiati

Publié le 2 juin 2025

Mis à jour le 31 juillet 2025

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Articles de revues sur le sujet "Natural Dosage Form"

Murata, Yoshifumi, Kyoko Kofuji, Norihisa Nishida, and Ryosei Kamaguchi. "Preparation and Characteristics of Film Dosage Form Natural Polysaccharides." Pharmacology & Pharmacy 02, no. 03 (2011): 194–98. http://dx.doi.org/10.4236/pp.2011.23028.

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DEVI, GAYATRI, MALKIET KAUR, MANJU NAGPAL, et al. "Advanced Dosage Form Design: Role of Modified Natural Gums." Asian Journal of Chemistry 33, no. 1 (2020): 1–9. http://dx.doi.org/10.14233/ajchem.2021.22937.

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Gums are naturally occurring segments in plants, which are cheap and abundant. Natural gums and their derivatives are widely used in a pharmaceutical dosage form. These natural materials possess several advantages over synthetic ones being chemically inert, non-toxic, low cost and biodegradable. However, quick degradation in the body, poor mechanical properties and low solubility are few disadvantages. To overcome these disadvantages, natural gums are modified by applying different chemical modification procedures. The modification of gums is done via various methods such as changing functiona

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Aruna, V., GV Amruthavalli, and R. Gayathri. "Safety profile of synthetic versus natural Psoralen." Journal of Medical Research 5, no. 5 (2019): 194–97. http://dx.doi.org/10.31254/jmr.2019.5507.

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Psoralen is used widely in the treatment of various skin diseases such as Psoriasis, Vitiligo etc. The Psoralen used for the above purpose is in oral dosage form and the topical dosage form is likely to reduce the severe side effects of oral Psoralen. However the phototoxic effect of Psoralen in topical form limit the medical fraternity from accepting it when compared to oral Psoralen. The safety profile of synthetic Psoralen versus natural Psoralen was done and natural Psoralen was found to be non-genotoxic and exerted least toxicity to keratinocytes and melanocytes when the cells were expose

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Kute, Vaibhav Ghansham, Rajeshwari Satish Patil, Vaishnavi Ghansham Kute, and Priti Dilip Kaluse. "Immediate-release dosage form; focus on disintegrants use as a promising excipient." Journal of Drug Delivery and Therapeutics 13, no. 9 (2023): 170–80. http://dx.doi.org/10.22270/jddt.v13i9.6217.

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Disintegrants are materials or mixtures of substances added in the drug formulations, which make easier dispersion or breakup of tablets and ingredients of capsules in small-scale particles for fast dissolution then it comes in contact with water in the GI tract. Immediate drug release dosage forms disintegrate rapidly after administration with an enhanced rate of dissolution. The superdisintegrants provide instantaneous disintegration of tablets after administration in the stomach. In this field, immediate-release liquid dosage forms and parenteral dosage forms have also been introduced for t

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Kirteebala, Pawar, Rajendra Shinde Dhawal, Dhondu Shivgan Dipak, et al. "Natural polymers in pharmaceutical drug delivery: A review." World Journal of Biology Pharmacy and Health Sciences 4, no. 3 (2020): 082–90. https://doi.org/10.5281/zenodo.4430990.

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In pharmaceutical formulation two main ingredients are required which is API and excipient. And excipient contains many components which plays vital role in manufacturing of dosage form as well as improve pharmaceutical parameters of the dosage form. Polymers used in any dosage form as excipient. Polymers have influencing capacity towards drug release and should be compatible, stable, non-toxic and economic etc. Generally, polymers are classified into three categories i.e natural, semi-synthetic and synthetic polymers. Nowadays, many pharmaceutical companies inclined towards using natural poly

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Tirunagari, Mamatha, Nagadivya Nerella, Anupama Koneru, Madihah, Syed Sarfaraz, and M. A. Mushtaq. "Formulation and Evaluation of Pediatric Paracetamol Elixir Using Natural Colorant." International Journal of PharmTech Research 13, no. 3 (2020): 180–85. http://dx.doi.org/10.20902/ijptr.2019.130307.

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Oral dosage forms are most popular among other dosage forms. In terms of bioavailability liquid dosage form is better than that of solid dosage form. In the present scenario monophagic liquid dosage forms such as syrups, elixirs, throat paints, mouth washes, gargles have gained huge popularity. These are very basic preparations which involve brief processes, machineries and are cost effective also. They come in wide range colours and flavors so as to attract the pediatric age group. Currently colors derived from natural sources are given priority compared to synthetic ones. In this study we fo

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Kirteebala Pawar, Dhawal Rajendra Shinde, Dipak Dhondu Shivgan, et al. "Natural polymers in pharmaceutical drug delivery: A review." World Journal of Biology Pharmacy and Health Sciences 4, no. 3 (2020): 082–90. http://dx.doi.org/10.30574/wjbphs.2020.4.3.0101.

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Santosh Kumar, Rada, and S. Chandana. "Isolation and Characterization of Tamarind Kernel Gum: A Novel Natural Floating Polymer." Journal of Drug Delivery and Therapeutics 9, no. 3 (2019): 473–78. http://dx.doi.org/10.22270/jddt.v9i3.2911.

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Floating drug delivery systems (FDDS) are aimed to retain the drug in the stomach and are useful for drugs that are poorly soluble or unstable in intestinal fluids. The underlying principle is very simple i.e., to make the dosage form less dense than the gastric fluids so that it can float on them. The drug usually keeps floating in the gastric fluid and slowly dissolves at a pre-determined rate to release the drug from the dosage form and maintain constant drug levels in the blood. Several approaches are currently used to retain the dosage form in the stomach. The principle of the floating ta

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Yang, Zhijun, and Aiping Lyu. "Rational Design of Dosage form of Medicinal Plant and Natural Product." Planta Medica 89, no. 14 (2023): 1347. https://doi.org/10.1055/s-0043-1774026.

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V.I., Opryshko, Мamchur V.I., Nosivets D.S., Prokhach A.V., and Kurt-Ametova A.S. "Effective, safe and rational pharmacotherapy of endogenic progesterone deficiency." Reproductive health of woman 1 (February 26, 2021): 21–25. https://doi.org/10.30841/2708-8731.1.2021.229705.

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Today, the most frequent complication of pharmacotherapy is an allergic reaction, the so-called drug or drug allergy. An allergic reaction can be caused both by the active ingredients and by the excipients included in the composition of the drug to provide a certain dosage form and its physicochemical properties. Vaginal progesterone preparations are characterized by a large variety of dosage forms: gels, tablets and gelatin capsules for intravaginal administration. It is known that the safety and efficacy of pharmacotherapy depend on the active substance, the dosage form, and the base of the

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Thèses sur le sujet "Natural Dosage Form"

Pittari, Gianfranco. "NK Cell Tolerance of Self-Specific Apecific Activating Receptor KIR2DS1 in Individuals with Cognate HLA-C2 Ligand." Thesis, Paris 11, 2013. http://www.theses.fr/2013PA11T043.

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Les cellules tueuses naturelles (NK) sont régulées par des récepteurs activateurs et inhibiteurs. La plupart des récepteurs inhibiteurs reconnaisse des molécules du complexe majeur d'histocompatibilité (CMH) de classe I, et protège les cellules saines des phénomènes d'auto-immunité médiés par les cellules NK. Cependant, certains récepteurs activateurs, incluant le récepteur killer cell Ig-like receptor (KIR) 2DS1, reconnaissent aussi des ligands CMH de classe I. Cela pose la question de savoir comment les cellules NK qui expriment des récepteurs activateurs deviennent tolérantes au soi. Nous a

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Ralph, Martin I. "Towards establishing a fit-for-purpose regulatory framework for radiation protection in Western Australia's mining industry: Evaluating mine worker exposures to naturally occurring radionuclides." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2023. https://ro.ecu.edu.au/theses/2642.

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Mining in the state of Western Australia (WA) formally commenced in the 1840s, and over the ensuing 180 years has evolved to be the epicentre of the Australian mining industry and a significant contributor to the national economy. The lithology of WA is replete with mineralisation that hosts uranium and “critical minerals” required for the global renewable energy sector. The state’s first uranium mine is under development, and high levels of activity are occurring in the state’s nascent critical minerals sector, with 168 WA-based companies pursuing rare earths-bearing minerals, 51 of which are

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Shih, Ming-Kuang, and 施明光. "InhibitoryActivity of Natural Active Compounds against Human Papilloma VirusPseudovirus and Novel Dosage Form for Use Therewith." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/czt7kr.

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博士 國立臺北科技大學 有機高分子研究所 101 Currently, treatments for vaginal infections are mostly given orally or subcutaneously. However, the extensive first-pass metabolism causes the exposure of unchanged drug to the vaginal mucosa (i.e., bioavailability) after oral or subcutaneous dosing may be as low as 2.92%. Meanwhile, ointments for external application may result in pain or hypersensitivity. To address these problems. This study proposed a novel composite dosage form consisting of polyurethane (PU) foam and aquagel impregnated therewithin. The hydrophilic PU foam comprised inter-connecte

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Couto, Rui Gonçalo Cabo. "Automatic calculation of insulin dose for proteins and lipids." Master's thesis, 2021. https://hdl.handle.net/10216/139343.

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賴建宏. "Relationship between optimal coagulant dosage and zeta potential of colloids for coagulation of Natural Turbid Water." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/79703684541153814537.

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碩士 國立交通大學 環境工程系所 99 The zeta potential of coagulated particles is commonly used as an index to evaluate the optimal dosage of coagulation in water treatment. However, the qualities of raw water taken from surface turbid water by water treatment plant (WTP) fluctuates immensely, resulting in variation of optimal zeta potential zone for coagulation of different natural turbid water. Therefore, there are still many debates on determination of the optimal dosage through the indication of zeta potential. The goal of this study is to investigate the relationship between optimal dosage an

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Guerreiro, Filipa Borges Ferreira. "Calibration of MR-images for accurate dose calculations." Master's thesis, 2015. http://hdl.handle.net/10451/20395.

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Tese de mestrado integrado em Engenharia Biomédica e Biofísica, apresentada à Universidade de Lisboa, através da Faculdade de Ciências, 2015 A Radioterapia é uma especialidade médica que resulta da utilização controlada de fontes de radiação ionizantes de alta energia com o principal objetivo de danificar o maior número de células tumorais e de preservar ao máximo os órgãos de risco adjacentes ao tecido tumoral. A prática clínica de radioterapia é planeada com base em imagens de Tomografia Computorizada (TC) do paciente. A modalidade de TC é assim escolhida visto oferecer uma elevada resolu

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Maia, Ana Raquel Conduto Dias. "Preclinical development of a new compound for the treatment of arthritis." Master's thesis, 2016. http://hdl.handle.net/10451/25168.

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Tese de mestrado em Biologia Molecular e Genética, apresentada à Universidade de Lisboa, através da Faculdade de Ciências, 2016 A Artrite Reumatóide (AR) é uma doença auto-imune, progressiva e crónica que se caracteriza por uma acentuada inflamação nas articulações com consequente reabsorção do osso e da cartilagem. Não existe cura e a atual estratégia terapêutica implica o diagnóstico e início de tratamento o mais cedo possível com vista à eventual remissão. Os sintomas iniciais incluem rigidez, inchaço e dor nas pequenas articulações que posteriormente alastram para as articulações maiore

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Livres sur le sujet "Natural Dosage Form"

United States. Congress. House. Committee on Natural Resources. Subcommittee on Oversight and Investigations. Radiation exposure from Pacific nuclear tests: Oversight hearing before the Subcommittee on Oversight and Investigations of the Committee on Natural Resources, House of Representatives, One Hundred Third Congress, second session ... hearing held in Washington, DC, February 24, 1994. U.S. G.P.O., 1994.

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Butusov, Oleg, and Valeriy Meshalkin. Fundamentals of informatization and mathematical modeling of ecological systems. INFRA-M Academic Publishing LLC., 2023. http://dx.doi.org/10.12737/1477254.

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The concept, theory and methodological foundations of environmental informatics are presented, the tools of informatization and digitalization of technogenic-natural systems are described, methods of mathematical modeling of ecological systems in industrial areas are considered. The main methods of ecological informatics, methods of mathematical and computer modeling of quasi-static (long-term) dynamics of ecosystems are described. The theoretical foundations of calculating the "dose-effect" dependencies as the main indicators of the degree of impact of industrial emissions on the environment

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Tan, Tina Q., John P. Flaherty, and Melvin V. Gerbie. Vaccine Overview. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780190604776.003.0001.

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This chapter introduces commonly used vaccines in a variety of clinical settings and provides information about proper administration and dosing. Details of types of immunizations such as active vs passive and inactivated vs live-attenuated vaccines are presented. CDC recommendations are noted including “routine” vs “permissive”. It also contains practical tips for addressing vaccine hesitancy and debunks common myths about vaccines such as the misconception that they cause autism or the diseases they are intended to prevent. Multiple other misconceptions are discussed and suggestions given to

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Monti, Daniel A., and Andrew B. Newberg. Botanicals of Interest to Psychiatrists. Edited by Anthony J. Bazzan and Daniel A. Monti. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780190690557.003.0007.

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There are many herbal and botanical substances that are currently used by patients with psychiatric disorders such as anxiety or depression. Because each botanical derives from a different source, contains different active components, and has a different application, each must be studied thoroughly and used carefully. The use of herbal medicines differs from that of chemical pharmaceuticals, which are usually tested, packaged, and administered as single agents in defined dosages. Clinical evidence of effectiveness and toxicity of natural agents varies greatly as do methods for assessing their

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GonzÁlez, Amy Berrington de, André Bouville, Preetha Rajaraman, and Mary Schubauer-Berigan. Ionizing Radiation. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190238667.003.0013.

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Ionizing radiation is a universal carcinogen due to its ability to induce cancer in most organs following exposure at any age, including in utero. Several organs are especially radiosensitive, particularly when exposure occurs in childhood. These include the female breast, thyroid, brain, and red bone marrow. Very few cancers, notably cervical and Hodgkin lymphoma, do not seem to be related to ionizing radiation, for unknown reasons. For most cancers (lung may be the exception) the relative risk decreases with attained age and time since exposure. Currently the main sources of radiation exposu

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Levy, David. Type 1 Diabetes. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780198766452.001.0001.

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Type 1 Diabetes (2011) has been completely updated for the 2nd edition. The background is introduced with a review of aetiology, classification, and presentation in young people and adults. The major longitudinal studies (DCCT/EDIC, Pittsburgh, and FinnDiane) are discussed and their importance in defining the long-term outcomes of Type 1 diabetes in the modern era emphasized. Treatment is covered with a focused discussion of advanced management of diabetic ketoacidosis and insulin treatment (multiple-dose insulin and insulin pumps). A new chapter on technology covers continuous glucose monitor

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D’Haese, Patrick C., Benjamin A. Vervaet, and Anja Verhulst. Heavy metal-induced tubulointerstitial nephritis. Edited by Adrian Covic. Oxford University Press, 2015. http://dx.doi.org/10.1093/med/9780199592548.003.0088.

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Environmental and occupational exposure to heavy metals should be considered an important health hazard, even more so since evidence has been provided in recent literature for toxic effects occurring even at low levels. The kidney is highly vulnerable to metal toxicity and the extent of renal damage depends on the nature, dose, route, and duration of exposure. Both acute and chronic intoxication have been demonstrated to cause kidney injury, with various levels of severity, ranging from tubular dysfunctions to severe chronic kidney disease. The epidemiology of heavy metals poisoning, their ren

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Ng, Dominic S. Familial Apolipoprotein A-I Deficiency. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199972135.003.0036.

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Apolipoprotein (apo) A-I is the key structural protein of high-density lipoprotein (HDL) and is necessary for sustaining the circulating level of HDL. It has also been studied extensively for its role in mediating many of the antiatherosclerotic and antithrombotic properties of HDL. More than 50 naturally occurring mutations and variants have been described, and they usually result in marked HDL deficiency in a gene-dose dependent manner. However, the propensity to develop accelerated coronary heart disease (CHD) is highly heterogeneous. Mutations resulting in inability to synthesize apo A-I t

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Pearson, Andrew. Tularaemia. Oxford University Press, 2011. http://dx.doi.org/10.1093/med/9780198570028.003.0031.

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Tularaemia is a plague-like bacterial disease of animals (particularly rodents, hares, and rabbits) and man caused by five subspecies of Francisella. Two subspecies predominate: F. tularensis tularensis in North America and F. tularensis holarctica throughout the northern hemisphere. F. tularensis occurs in persistent natural foci causing localized epidemics and sporadic cases in man.Francisella tularensis subspecies tularensis was described originally as causing a more virulent form of tularaemia than was seen in Europe. More recently recognized are subpopulations of Francisella tularensis su

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Schutzer-Weissmann, John. Cytokines as central to peripheral sensitization and hyperalgesia. Edited by Paul Farquhar-Smith, Pierre Beaulieu, and Sian Jagger. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198834359.003.0030.

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The landmark study discussed in this chapter, published in a letter to Nature in 1988 by Ferreira et al., marked the beginning of a new era of pain research. It demonstrated elegantly and for the first time that cytokines are central to peripheral sensitization and the phenomenon of hyperalgesia. The authors first injected various cytokines into rats’ paws and then tested for hyperalgesic activity using a modified Randall–Sellito rat-paw pressure test. They found that interleukin-1β‎ evoked a dose-dependent hyperalgesic response in the injected paw. The investigators then tried to isolate the

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Chapitres de livres sur le sujet "Natural Dosage Form"

Pizzocaro, Silvia, and Antonella Valeria Penati. "Medicines as Designed Objects." In Research for Development. Springer Nature Switzerland, 2024. https://doi.org/10.1007/978-3-031-53294-8_12.

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AbstractA large amount of healthcare studies are paying very large attention to patients’ behaviour with medicines and to patient-related factors leading to successful or poor medication adherence. Despite that, more diffused design-oriented perspectives grafted onto the medication-user relation still deserve attention. Although medicines can be the first (and sometimes unique) remedy a patient can rely on when at home, there is a relative inertia in designerly ways of conceiving medicines as ‘designed things’. The diffusion and ubiquity of pharmacological treatments—specifically their pervasi

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Maltsev, Dmytro. "Results of a retrospective analysis of use of high-dose intravenous human normal immunoglobulin for the treatment of immune-dependent encephalopathy with a clinical picture of autism spectrum disorders in children with genetic deficiency of folate cycle." In IMMUNODIAGNOSTICS AND IMMUNOTHERAPY OF NEUROPSYCHIATRIC DISORDERS IN CHILDREN. TECHNOLOGY CENTER PC, 2025. https://doi.org/10.15587/978-617-8360-21-4.ch13.

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Autism spectrum disorders (ASD) are a group of heterogeneous neuropsychiatric disorders that are variable in phenotype and are clinically characterized by deficits in social interactions, impaired communication, and stereotyped behavior. Currently, there is a rapid increase in the frequency of this severe pathology in the child population, the reasons for which are still not sufficiently understood. As noted by Hughes H.K. et al. in a systematic review on the problem of ASD, in the USA, for the period from 1972 to 2014, the frequency of registered cases of this neuropsychiatric pathology incre

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T. Galatage, Sunil, Rahul Trivedi, Durgacharan A. Bhagwat, et al. "Self-nano Emulsifying Formulations: An Encouraging Approach for Bioavailability Enhancement and Future Perspective." In Dosage Forms [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.108703.

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Currently lipid-based formulations are playing a vital and promising role in improving the oral bioavailability of poorly water-soluble drugs. Lipid based formulations mainly consist of a drug dissolved in lipids such as triglycerides, glycerides, oils and surface active agent. Self nanoemulsifying formulations (SNEF) are isotropic mixtures of lipids/oils, surfactants and co-surfactants. On mild agitation followed by dilution in aqueous media, such as GI fluids, SNEF can form fine oil-in-water (o/w) nanoemulsions. Present chapter summarizes different types of lipid formulations with special em

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VADAGA, ANILKUMAR. "Pharmaceutical Aids." In A Text Book of Pharmaceutics for I Year Diploma in Pharmacy. THINKPLUS PHARMA PUBLICATIONS, 2024. http://dx.doi.org/10.69613/5zhfxq55.

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Pharmaceutical aids, also known as excipients, are essential components in drug formulations that serve various functions beyond the active pharmaceutical ingredient (API). These substances play crucial roles in enhancing the stability, bioavailability, manufacturability, and patient acceptability of medicinal products. Common categories of pharmaceutical aids include diluents, binders, disintegrants, lubricants, glidants, and preservatives. Each type of excipient contributes uniquely to the overall performance of the dosage form. For instance, diluents provide bulk to small-dose drugs, while

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Zawistowski, Jerzy. "The Global Regulations and Health Claims on Natural Dietary Antioxidant Supplements." In Dietary Supplements with Antioxidant Activity. The Royal Society of Chemistry, 2023. http://dx.doi.org/10.1039/bk9781839166112-00011.

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Dietary supplements may have different names in various countries. The terms include natural health products, health foods, herbal supplements, and traditional medicine. However, the form is common and includes capsules, tablets, tinctures, powders, or pills at a daily dosage level. The dietary supplement is not represented for use as a conventional food or as the sole item of a meal or diet or as a replacement for drugs and medicines. The antioxidant supplements that contain catechins, anthocyanins, carotenoids, isoflavones, and various other phytochemicals are an important group of products,

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Mogal, Rajendra T., and Moreshwar P. Patil. "Microencapsulation as a Tool for Controlled Drug Delivery." In Novel Drug Delivery Systems (Part 1). BENTHAM SCIENCE PUBLISHERS, 2024. https://doi.org/10.2174/9789815274165124010009.

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Controlled drug delivery systems, which release drug/s in a predetermined manner, offer numerous advantages over conventional drug delivery systems. These advantages include improved bioavailability, reduced dose frequency, minimized fluctuations in plasma drug concentration, and sustained drug release. The major drawback of the unit dosage form is dose dumping, which can be effectively overcome by multiple unit dosage forms like microcapsules. The microencapsulation technique involves enclosing drug/s by a thin coating shell, and the resultant product is referred to as microcapsules. This tec

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Prado, Héctor J., María C. Matulewicz, and Marina Ciancia. "Naturally and Chemically Sulfated Polysaccharides in Drug Delivery Systems." In Advanced Pharmacy. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815049428123010009.

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Sulfated polysaccharides have always attracted much attention in food, cosmetic and pharmaceutical industries. These polysaccharides can be obtained from natural sources such as seaweeds (agarans, carrageenans, fucoidans, mannans and ulvans), or animal tissues (glucosaminoglycans). In the last few years, several neutral or cationic polysaccharides have been sulfated by chemical methods and anionic or amphoteric derivatives were obtained, respectively, for drug delivery and other biomedical applications. An important characteristic of sulfated polysaccharides in this field is that they can asso

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M. Khalid, Garba, and Francesca Selmin. "Applications of Alginates in the Design and Preparation of Orodispersible Dosage Forms." In Properties and Applications of Alginates [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98610.

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Orodispersible dosage forms are attractive and innovative drug delivery systems that can fulfill individual patient needs, especially in children, elderly and among dysphagic patients. Indeed, they rapidly disperse in the mouth upon contact with the saliva without the need for water or munching. Examples of such dosage forms include orodispersible tablets (ODT), and orodispersible films (ODF). The ability to obtain ODF with different dimensions (sizes and thicknesses) makes them a suitable for personalized dosing of single or a fixed-dose combination of drugs in special patient populations. Se

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Rajeswari, A. V. S., and P. Sailaja. "Application of Natural Polymers as Excipients in Dosage Forms." In Novel Aspects on Pharmaceutical Research Vol. 8. B P International (a part of SCIENCEDOMAIN International), 2023. http://dx.doi.org/10.9734/bpi/napr/v8/5621c.

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Hasnain, Md Saquib, Muhanna K. Al-Muhanna, Naushad Anwar, et al. "Drug delivery dosage forms made of tailor-made natural polysaccharides." In Tailor-Made Polysaccharides in Drug Delivery. Elsevier, 2023. http://dx.doi.org/10.1016/b978-0-12-821286-8.00003-3.

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Actes de conférences sur le sujet "Natural Dosage Form"

González, J. J., M. E. Afonso, and G. Pellegrino. "Corrosion of Carbon Steels in Monoethylene Glycol." In CORROSION 2000. NACE International, 2000. https://doi.org/10.5006/c2000-00498.

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Abstract The dehydration of natural gas consists of water removal that is associated with the natural gas in form of vapor. The removal of water prevents the formation of gas hydrates and reduces corrosion in pipelines and components. The present study addresses the aggressiveness of the environment and the possible prevention methods in a corrosive environment containing MEG (Monoethylene Glycol) in presence of a neutralizer (Monoethanolamine MEA). The materials used were ASTM A106 gr. B and A285 gr. C, steels that are extensively used by the oil industry in the construction of pipelines and

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Amjad, Zahid, Peter G. Koutsoukos, and Panagiota D. Natsi. "Polymer Architecture Effect on Zinc Ions Stabilization in Aqueous Systems." In CONFERENCE 2022. AMPP, 2022. https://doi.org/10.5006/c2022-17727.

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ABSTRACT The zinc ion stabilization efficacy of synthetic, biodegradable, hybrid, and natural polymers has been studied. The results show that performance of polymers tested strongly depends on the polymer architecture. Based on the data collected, the performance of synthetic polymers may be ranked as follows: ter- &gt; co- &gt; homopolymers. For hybrid polymers the trend is CMI-25 &gt; CMI-15. It has also been found that among carboxyl containing homopolymers synthetic polymers perform better than bio- and natural polymers. The precipitate consisted mainly of zinc oxide which was

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Fivizzani, Kenneth P., Leonard Dubin, Barbara E. Fair, and John E. Hoots. "Manganese Stabilization by Polymers for Cooling Water Systems." In CORROSION 1989. NACE International, 1989. https://doi.org/10.5006/c1989-89433.

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Abstract Manganese from natural water sources causes deposition and associated corrosion problems in municipal and industrial water systems, particularly where chlorination is employed. Polymers are used to limit the precipitation of iron/manganese and manganese salts. Evidence for solubilization of manganese salts by polymeric and molecular agents has also been obtained. Factors such as dosage and composition have a significant impact on the performance of polymers. A polymer’s ability to perform effectively is also significantly affected by operating conditions such as temperature, pH, iron:

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Amjad, Zahid, and Peter G. Koutsoukos. "Influence of Inhibitor Architecture on Magnesium Ammonium Phosphate (Struvite) Precipitation for Waste Water Application." In CORROSION 2018. NACE International, 2018. https://doi.org/10.5006/c2018-10926.

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Abstract In this work, a variety of polymers were evaluated as precipitation inhibitors for magnesium ammonium phosphate (struvite) in aqueous solution. The polymers tested include 1) homopolymers of acrylic acid and methacrylic acid of varying molecular weight (MW), maleic acid, 2-ethyloxazoline, 2) acrylic acid based co- and terpolymers containing monomers with different functional groups and 3) natural, bio- and hybrid based polymers. The results reveal that polymer performance as a struvite inhibitor is strongly affected by polymer dosage, MW, and ionic charge of the functional group. It h

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Kesavan, Sathees, John Samuel Selvaraj, Suresh Seethalakshmi, Yure Queiros, Andrade Gessie, and Nicolas Scanarotti. "Development of a Concentrated Corrosion Inhibitor Compatible with Produced Water Brine and Scale Inhibitor." In CORROSION 2020. NACE International, 2020. https://doi.org/10.5006/c2020-14668.

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Abstract Oil and gas production field requirements to maintain asset integrity and scale control are very diverse. In an operator’s field in Latin America, the conditions across several wells required the co-injection of corrosion and scale inhibitors. The brine composition of these wells is challenging due to relatively high concentration of calcium ions as well as the presence of iron. The selected scale and corrosion inhibitors need to be compatible with brine and with each other without negatively impacting the absolute performance of the individual products. An additional practical challe

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Lee, Harold H., Harriett J. Bennett, and Aklilu Lemma. "Towards Control of Zebra Mussels: the Use of Endod (Phytolacca Dodecandra), a Natural Molluscicide." In CORROSION 1992. NACE International, 1992. https://doi.org/10.5006/c1992-92314.

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Abstract Experiments using a static bioassay system as a base to develop a focal control method for Dreissena polymorpha illustrate the potential usefulness of the plant molluscicides, Lemmatoxins, in the African soapberries, Phytolacca dodecandra or Endod. Endod at a dose higher than 15 mg/L is lethal to adult and juvenile zebra mussels, while a lower dose prevents their migration, adhesion, and aggregation. The molluscicidal activity could be removed by powdered activated carbon. Since infestation of zebra mussels is a long-term problem and waterworks vary in design and in location, a concep

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Li, Yingchao, Tingyue Gu, Peiyu Zhang, Dake Xu, and Congmin Xu. "D-amino Acids Enhanced Biocide Mitigation of Field Biofilm Consortia in Lab Tests." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-05522.

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Abstract Microbiologically influenced corrosion (MIC) is a major problem in the oil and gas industry as well as many other industries. Current treatment methods rely mostly on pigging and biocide dosing. Because field systems are not sterile, microbes always recover, leading to repeated treatment cycles. It is anticipated that the application of the same biocide will selectively promote resistant microbes. Overtime, this can lead to the biocide dosage escalating, resulting in a cost increase and environmental concerns. Previously published work demonstrated that some D-amino acids are biocide

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Zhao, Xiong, Changfeng Chen, Haobo Yu, and Qingzuo Chen. "Evaluation and Mechanism of Corrosion Inhibition Performance of New Corrosion Inhibitor." In CORROSION 2018. NACE International, 2018. https://doi.org/10.5006/c2018-11029.

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Abstract Imidazoline derivatives have anti-corrosive effects on metals such as carbon steel and are widely used in acid-corroded pipelines for conveying oil and natural gas. In this paper, a novel imidazoline inhibitor was designed and synthesized. The corrosion inhibitor has excellent corrosion inhibition effect on in the environment of H2S / CO2. When the dosage is only 50mg / L, the corrosion inhibition efficiency can reach 94 %. SEM observation shows that fewer pits and corrosion product were found on the sample surface after adding the corrosion inhibitor. The adsorption performance of im

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Wang, Bei, Lei Zhang, Guang Chen, et al. "Corrosion Inhibitor Film Stability under High Gas Velocity Conditions of Subsea Wet Gas Pipeline." In CORROSION 2017. NACE International, 2017. https://doi.org/10.5006/c2017-09247.

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Abstract Corrosion is always recognized as one of the biggest flow assurance challenges of natural gas fields. During the pipeline design and maintenance, it is not enough to only use the equations of the limitation for the maximum erosional velocity from API RP 14E to deal with the balance of pipeline diameter, flow rate and the corrosion inhibitor film stability and effectiveness. In order to get more information of the relationship between flow and inhibitor for wet subsea pipeline, a HTHP-RC and a wet gas flow loop were employed to simulate typical flow conditions of subsea gas pipeline in

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Bento, Rodolfo Eduardo da Silva, Ryan Rodrigues Rios Neves, Mag Geisielly Alves Guimarães, and Denise de Carvalho Urashima. "Concretos com agregados reciclados: cidades e comunidades sustentáveis." In XX ENCONTRO NACIONAL DE TECNOLOGIA DO AMBIENTE CONSTRUÍDO. UFAL, 2024. http://dx.doi.org/10.46421/entac.v20i1.5876.

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A pesquisa visou avaliar concretos dosados com agregados graúdos reciclados com vistas ao desenvolvimento sustentável. Foram realizadas dosagens com substituições parciais (20%) e totais (100%) do agregado graúdo natural (100%AN) de rocha gnaisse por reciclados de blocos intertravados pré-fabricados de concreto (ARCO) e de composição cimentícia (ARCI), separadamente, de granulometria comercial brita n°1. Os concretos foram dosados para resistência à compressão mínima de 25 MPa aos 28 dias e abatimento 100±20mm, com aglomerante CP II E-32, aditivo plastificante em 1% e agregado miúdo natural mé

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Rapports d'organisations sur le sujet "Natural Dosage Form"

Wilson, Charles, and Edo Chalutz. Biological Control of Postharvest Diseases of Citrus and Deciduous Fruit. United States Department of Agriculture, 1991. http://dx.doi.org/10.32747/1991.7603518.bard.

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The objectives of this research were to develop control measures of postharvest diseases of citrus and deciduous fruits by using naturally-occurring, non-antibiotic-producing antagonists; study the mode of action of effective antagonists and optimize their application methods. Several antagonists were found against a variety of diseases of fruits and vegetables. One particularly effective yeast antagonist (US-7) was chosen for more in-depth studies. This antagonist outcompetes rot pathogens at the wound site for nutrients and space; it is better adapted than the pathogen to extreme environment

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Lichter, Amnon, Joseph L. Smilanick, Dennis A. Margosan, and Susan Lurie. Ethanol for postharvest decay control of table grapes: application and mode of action. United States Department of Agriculture, 2005. http://dx.doi.org/10.32747/2005.7587217.bard.

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Original objectives: Dipping of table grapes in ethanol was determined to be an effective measure to control postharvest gray mold infection caused by Botrytis cinerea. Our objectives were to study the effects of ethanol on B.cinerea and table grapes and to conduct research that will facilitate the implementation of this treatment. Background: Botrytis cinerea is known as the major pathogen of table grapes in cold storage. To date, the only commercial technology to control it relied on sulfur dioxide (SO₂) implemented by either fumigation of storage facilities or from slow release generator pa

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Butterweck, Gernot, Alberto Stabilini, Benno Bucher, et al. Aeroradiometric measurements in the framework of the swiss exercise ARM23. Paul Scherrer Institute, PSI, 2024. http://dx.doi.org/10.55402/psi:60054.

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The flights of the civil (ARM23c) and military (ARM23m) parts of the exercise were performedbetween June 19th and 23rd and between September 11th and September 15th,respectively. The measuring system RLL001 was employed for all measurements. As usual, during the civil exercise the environs of some of the Swiss nuclear power plants were screened, on behalf of the Swiss Nuclear Safety Inspectorate (ENSI). At the site of the nuclear power plant Gösgen (KKG) with its pressurized water reactor, the activation products of the primary coolant loop are kept in the well shielded reactor building, thus

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Danan, Elisheva R., Susan Diem, Catherine Sowerby, et al. Genitourinary Syndrome of Menopause: A Systematic Review. Agency for Healthcare Research and Quality (AHRQ), 2024. http://dx.doi.org/10.23970/ahrqepccer272.

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Objectives. To conduct a systematic review of evidence regarding genitourinary syndrome of menopause (GSM) screening, treatment, and surveillance. Data sources. Ovid/Medline®, Embase®, and EBSCOhost/CINAHL® from database inception through December 11, 2023. Review methods. We employed methods consistent with the Agency for Healthcare Research and Quality Evidence-based Practice Center Program Methods Guidance to identify studies and synthesize findings for Key Questions related to screening for GSM, effectiveness and harms of U.S.-available interventions for GSM, appropriate followup intervals

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