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Dissertations / Theses on the topic 'In situ injectable implant'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Jones, Tanya. "Development of a Novel Implant for Drug Delivery." Thesis, Griffith University, 2011. http://hdl.handle.net/10072/367574.

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Background and aim: In situ gelling formulations are liquids that undergo a phase transition to form semi-solid gel structures within the physiological environment. Sustained release of drug products can therefore be delivered via injectable in situ gelling formulations where the gel formed in vivo acts as a drug reservoir, releasing drug via diffusion and/or degradation of the gel. Due to limitations of previously described in situ gelling formulations, the current research project aimed to address these issues and develop a biocompatible injectable in situ gelling formulation/s containing a

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2

Gomes, Rodrigues Alexandre [Verfasser]. "Parenteral controlled drug delivery by novel direct injectable polymer (DIPO) : in situ forming implant / Alexandre Gomes Rodrigues." Halle, 2018. http://d-nb.info/1160514518/34.

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3

Fisher, Paul. "Additives to Control Mechanical Properties and Drug Delivery of Injectable Polymeric Scaffolds." UKnowledge, 2014. http://uknowledge.uky.edu/cbme_etds/25.

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In situ forming implants (ISIs) are popular due to their ease of use and local drug delivery potential, but they suffer from high initial drug burst, and release behavior is tied closely to solvent exchange and polymer properties. Additionally, such systems are traditionally viewed purely as drug delivery devices rather than potential scaffold materials due to their poor mechanical properties and minimal porosity. The aim of this research was to develop an injectable ISI with drug release, mechanical, and microstructural properties controlled by micro- and nanoparticle additives. First, an inj

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4

SHENG, LI. "In Vitro and in Vivo Long-Term Release of Injectable 3-Branch PLA-Retinylamine Conjugate Implant." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1446220233.

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5

Hess, Jeremy. "In-Situ Testing of Uretek's Injectable Barrier as a Mechanism for Groundwater Control." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6095.

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Construction projects involving the installation or repair of subsurface structures or utilities often require dewatering to induce a temporary lowering of the local groundwater elevation to facilitate construction. In the event that a known contaminant plume is present in an adjacent area, this dewatering may inadvertently draw the contaminant into the previously uncontaminated work area. Uretek Holdings, Inc. has developed its Injectable BarrierSM to be installed prior to dewatering exercises to provide a groundwater cut-off by reducing the potential movement of groundwater due to the hydr

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6

Nizamoglu, Mehmet. "Injectable, in situ crosslinked hydrogels by Fenton’s Reagent (Fe (II) & H2O2) for corneal perforations." Thesis, Uppsala universitet, Institutionen för medicinsk biokemi och mikrobiologi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-383128.

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Corneal perforations are medical emergencies in which the cornea is partially or completely ruptured, resulting in the loss of stability of the whole eye. Such situations can be caused by bacterial or fungal keratitis, autoimmune, or ocular-surface related disorders. Corneal perforations, if left untreated, can cause partial or total blindness. Therefore, immediate treatment is necessary. The best treatment available is corneal transplantation; however, due to donor limitation, this treatment is non-feasible. Alternatively, applying cyanoacrylate or fibrin glue is the treatment used clinically

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7

Tran, Anh Hien. "Bacterial biofilm treatment and in situ antimicrobial coatings for orthopaedic implant retention surgery." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/207850/1/Anh%20Hien_Tran_Thesis.pdf.

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Bacterial biofilms are involved in most device-associated infections. This thesis has developed an in-situ method to treat biofilm and a coculture for testing new antimicrobial biomaterials. We used surface immobilisation to promote Alpha-amylase and silver ion’s disruption of S. aureus biofilms. The treatment also helped coating the surface with silver particles to prevent recurrence. We also formed a coculture of S. aureus and pre-osteoblastic cells and showed that bacteria preferentially attached to the osteoblasts and became more resistant to antibiotic treatment. Overall, this thesis has

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8

Becerra, Fajardo Laura. "Microcontrolled injectable stimulators based on electronic rectification of high frequency current bursts." Doctoral thesis, Universitat Pompeu Fabra, 2016. http://hdl.handle.net/10803/402433.

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Neuroprostheses based on dense networks of wireless microstimulators have been proposed in the past for restoring movement in paralysis patients. Yet existing implantable microstimulators are too bulky and invasive for implementing such networks because of the powering approaches they employ. To overcome this limitation, it was recently proposed an innovative electrical stimulation method incorporating electronic implants. The method consist in delivering, by means of superficial textile electrodes, high frequency current bursts which innocuously flow through tissues by galvanic coupling and

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9

Karnaushenko, Dmitriy D. "Compact Helical Antenna for Smart Implant Applications." Doctoral thesis, Universitätsbibliothek Chemnitz, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-230942.

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Medical devices have made a big step forward in the past decades. One of the most noticeable medical events of the twenties century was the development of long-lasting, wireless electronic implants such as identification tags, pacemakers and neuronal stimulators. These devices were only made possible after the development of small scale radio frequency electronics. Small radio electronic circuits provided a way to operate in both transmission and reception mode allowing an implant to communicate with an external world from inside a living organism. Bidirectional communication is a vital featur

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10

Vialle-Presles, Marie-José. "Etude biochimique et immunohistochimique des collagènes de la peau du rat : application à l'étude de la réhabilitation d'un implant de collagène injectable." Lyon 1, 1985. http://www.theses.fr/1985LYO11681.

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Utilisation de methodes immunohistochimiques pour etudier la repartition dans le derme du rat des macromolecules suivantes: isotypes 1,3,4,5 du collagene, fibronectine et fibres elastiques. Les collagenes des types 1,3 et 5 extraits de la peau du rat ont ete utilises pour la preparation d'anticorps specifiques. Ceux-ci ont permis de localiser ces antigenes dans le derme du rat et de suivre avec precision les phases precoses de la rehabilitation d'un implant de collagene injectable chez le rat

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11

Agossa, Kevimy. "Implants formés in-situ pour le traitement des poches parodontales : évaluation in-vitro et in-vivo." Thesis, Lille 2, 2018. http://www.theses.fr/2018LIL2S037/document.

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La frequence elevee et les consequences considerables des maladies parodontales sur la qualite de vie orale et la sante generale font de ces pathologies une preoccupation de sante publique. Le developpement de traitements innovants est un moteur essentiel du progres dans la prise en charge de ces maladies. Ce travail s’interesse a l’utilisation d’agents antimicrobiens (non-antibiotiques) et anti-inflammatoires comme adjuvants au debridement mecanique des poches parodontales. Il est consacre a la mise au point et a l’optimisation d’une forme galenique appelee implant forme in-situ (IFIS), a bas

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12

Piskounova, Sonya. "Biomaterials for Promoting Self-Healing of Bone Tissue." Doctoral thesis, Uppsala universitet, Polymerkemi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-158939.

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The present work addresses poor bone/implant integration and severe bone defects. In both conditions external stimuli is required for new bone to form. A multilayered functional implant coating, comprised of an inner layer of crystalline titanium dioxide (TiO2) and an outer layer of hydroxyapatite (HAP), loaded with bone morphogenetic protein-2 (BMP-2), was proposed as a tool for providing both improved initial bone formation and long-term osseointegration. The in vitro characterization of the implant coatings showed that TiO2 and HAP were more favorable for cell viability, cell morphology and

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13

Patel, Ravi. "DEVELOPMENT OF A NOVEL COMBINED EXPERIMENTAL AND MODELING APPROACH TO CHARACTERIZE IN SITU FORMING IMPLANTS FOR INTRATUMORAL DRUG DELIVERY." Case Western Reserve University School of Graduate Studies / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=case1297846540.

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14

Patel, Ravi Bhasker. "DEVELOPMENT OF A NOVEL COMBINED EXPERIMENTAL AND MODELING APPROACH TO CHARACTERIZE IN SITU FORMING IMPLANTS FOR INTRATUMORAL DRUG DELIVERY." Case Western Reserve University School of Graduate Studies / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=case1303727407.

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15

Gehrke, Maria. "Controlled release of dexamethasone to the inner ear from silicone-based implants." Thesis, Lille 2, 2016. http://www.theses.fr/2016LIL2S004/document.

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L’oreille interne est l’organe responsable pour la perception auditive et le maintien de l’équilibre. L’OMS estime que 360 millions personnes dans le monde (plus que 5 % de la population) souffrent d’une perte auditive handicapante, soit 40 dB dans l’oreille qui entend le mieux. Une des principales stratégies de traitement est l’administration systémique de stéroïdes, ex : la dexaméthasone. Ces stéroïdes sont utilisés pour prévenir les inflammations ou œdèmes pouvant endommager les très sensibles cellules ciliées de l’oreille interne.La libération contrôlée de principes actifs (PA) est un vrai

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16

Ribeiro, Cyntia Ferreira. "Influência dos diferentes tratamentos de superfície em discos de titânio comercialmente puro sobre a formação e aderência do biofilme inicial: estudo in situ." Universidade de Taubaté, 2013. http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=595.

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Hipótese do Estudo: O presente estudo hipotetizou que superfícies tratadas de discos de titânio comercialmente puro (Ti c.p.) são mais susceptíveis a aderência bacteriana que as superfícies lisas. Objetivo: O objetivo deste trabalho foi avaliar, in situ, a aderência bacteriana em discos de Ti c.p. submetidos a dois diferentes tratamentos de superfície: duplo ataque ácido e anodização. Metodologia: Sessenta corpos-de-prova de Ti c.p. foram divididos em três grupos: Grupo 1 - discos de Ti c.p. liso (grupo controle); Grupo 2 - discos de Ti c.p. com superfície duplamente condicionada com ácido (Ma

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17

Chen, Xianlong. "Development of a low-cost in-situ material characterization method and experimental studies of smart composite structures." Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCA002/document.

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Les structures composites intégrant des transducteurs piézoélectriques au cœur de la matière sont utilisées pour leur capacité à modifier leurs propriétés mécaniques en fonction de l’environnement, à contrôler leur intégrité structurale et à interagir avec l’homme ou avec d’autres structures.Ce travail se concentre sur les phases de conception préliminaire des structures composites intelligentes. Ces phases ne représentent que 5% du coût total d’un projet, mais conditionnent 80% du coût final du produit. Les principaux problèmes rencontrés lors de ces phases de conception préliminaire portent

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18

Solorio, Luis Jr. "Application of Ultrasound Imaging for Noninvasive Characterization of Phase Inverting Implants." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1332258338.

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19

Vintiloiu, Anda. "In situ-forming injectable organogel implant for sustained release of rivastigmine." Thèse, 2007. http://hdl.handle.net/1866/15666.

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20

Le, Renard Pol-Edern. "Injectable formulations forming an implant in situ as vehicle of silica microparticles embedding superparamagnetic iron oxide nanoparticles for the local, magnetically mediated hyperthermia treatment of solid tumors." Phd thesis, 2011. http://tel.archives-ouvertes.fr/tel-00709676.

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Cette thèse présente les travaux de développement de formulations injectables capables de se solidifier in situ, formant ainsi un implant piégeant des microparticules magnétiques en vue du traitement de tumeurs par induction magnétique d'une hyperthermie locale modérée. Nous exposons tout d'abord le contexte physique, biologique et clinique de l'hyperthermie comme traitement anticancéreux, particulièrement des modalités électromagnétiques. Les performances in vitro et in vivo des matériaux et formulations sont alors présentées. L'objet du chapitre suivant est la caractérisation des propriétés

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21

Hsu, Pei Hsin, and 許沛新. "Using injectable in situ forming hydrogels as an intervertebral disc prosthesis." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/07513795118450633916.

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碩士<br>國立陽明大學<br>醫學工程研究所<br>100<br>Low back pain is a general chronic disease, one of the leading causes is nerve compression resulting from the degeneration and hernition of intervertebral disc. A microdiscectomy is typically performed for a herniated lumbar disc, but the surgery have problems like disc height loss and herniation recurrence. In this study, we use chitosan and hyaluronic acid to form in-situ injectable hydrogels by chemical modification. Hoping that we can fill up the surgical space, reduce disc height loss and decrease the risk of herniation recurrence by injecting in-situ for

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22

Suggs, Laura J. "Development of poly(propylene fumarate-co-ethylene glycol): An injectable, biodegradable implant for cardiovascular applications." Thesis, 1998. http://hdl.handle.net/1911/19317.

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A novel block copolymer consisting of poly(propylene fumarate), PPF, and poly(ethylene glycol), PEG, was fabricated and evaluated for use as a cardiovascular stent to prevent reclosure of the vessel lumen following balloon angioplasty. This copolymer has been fabricated in a block configuration with two to three homopolymer units in series through a transesterification reaction between the linear polyester and the terminal hydroxyl functionalities of the PEG. This material has been characterized in terms of structure and composition as well as thermal properties and solubility behavior. We des

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23

Luo, Li Jyuan, and 羅麗娟. "Development of Injectable Biodegradable In-Situ Forming Drug Delivery System for Glaucoma Therapy." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/ud488e.

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博士<br>長庚大學<br>化工與材料工程學系<br>106<br>Glaucoma is the second worldwide leading cause of blindness. Eye drops are frequently used to administer medication for ocular disease treatment. However, the main challenges with this type of dosage form include short precorneal residence time, poor corneal penetration, and low ocular bioavailability. Hence, to improve ocular bioavailability and pharmacological response, we used intracameral administration of drug containing thermo-sensitive biodegradable copolymer for glaucoma therapy. In chapter 2 and 3, these charpters focused on “Extended Drug Delivery Sy

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24

Payne, Richard Grady. "Development of an injectable, in situ crosslinkable, degradable polymeric carrier for osteogenic cell populations." Thesis, 2002. http://hdl.handle.net/1911/18119.

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An injectable, in situ crosslinkable, degradable polymeric carrier for osteogenic cell populations was developed. Specifically, a system for encapsulating marrow stromal osteoblasts in gelatin microspheres has been implemented with the goal of incorporation into a crosslinking composite based on poly(propylene fumarate) (PPF). Initially, the microparticle formation procedure was evaluated for effects on the marrow stromal cells. It was determined that the encapsulation procedure had only minor effects on the viability, proliferation, and phenotypic expression through 28 days. The surfaces of t

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25

Yu, Hsing-Yi, and 余星億. "Injectable in Situ Forming pH-response Hydrogel as Delivery Vehicle for Cartilage Tissue Engineering." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/52535086530033622095.

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碩士<br>大同大學<br>材料工程學系(所)<br>101<br>Injectable hydrogels do not require a surgical procedure for implantation, and various therapeutic drugs can be incorporated through simple mixing, due the sol - gel state conversion characteristics. Preparation of pH-sensitive hygrogel in this study, the use of chitosan modified, prepared as a N,O carboxymethyl chitosan（NOCC）and hyaluronic acid （HA） derivative aldehyded hyaluronic acid （AHA）, via schiff base reaction. FTIR analysis, observation chitosan successfully modified N,O carboxymethyl chitosan（NOCC）. TNBSA analysis, determination of the degree of the

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26

Peter, Susan Jill. "Injectable, in situ polymerizable, biodegradable scaffolds based on poly(propylene fumarate) for guided bone regeneration." Thesis, 1998. http://hdl.handle.net/1911/19300.

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Poly(propylene fumarate) (PPF) was developed as a scaffold to guide bone regeneration. Synthesis of this material via refined reaction pathways led to increased purity and higher molecular weights of this unsaturated, linear polyester. Due to its unsaturated nature, PPF can be formulated as an injectable composite through the incorporation of a vinyl monomer (N-vinyl pyrrolidinone), a leachable porogen (sodium chloride), and a particulate phase ($\beta$-tricalcium phosphate). Variations in this formulation led to the development of a material that can cure in situ at body temperature, resultin

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27

Yang, Shu-Gen, and 楊曙亙. "Development and invagiation of a new injectable calcium phosphate cement for the treatment of peri-implant bony defects : Animal study." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/s4wjcg.

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碩士<br>國立臺灣大學<br>臨床牙醫學研究所<br>102<br>Particulated calcium phosphate has become more popular in clinical application in implant-related bone augmentation. The advantages of particulate form of bioceramics is owe to good ostoconductive efficiacy and easily gap filling, however, such particlulated bioceramics is lack of strength in space maintaineance which lead to unpredicated outcome in repair of intraoral large bony defect, such as peri-implant bone defect which heavy occlual loading may be encountered. For this reason, our team try to develop a new injectable bone cement based on α tricalcium p

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28

Manthata, Martha Morongwa. "Exploring the uptake of implant contraceptives among South African young women : a prediction for health communication campaigns." Thesis, 2019. http://hdl.handle.net/10386/2926.

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Thesis (M. A. (Communication Studies)) -- University of Limpopo, 2019<br>Globally, over the years, health promotion organisations have developed communication campaigns geared towards addressing most major public health issues with the intention of preventing risky sexual behaviour. Teenage pregnancy is a major health, social, systemic and economic challenge, not only for the basic education sector but also, crucially for national development in general. The use of modern contraceptives, specifically implant contraceptives, has the potential to alleviate unintended teenage pregnanc

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29

Le, Renard Pol-Edern. "Formulations pour le traitement local de tumeurs solides par hyperthermie à médiation magnétique." Phd thesis, 2011. http://tel.archives-ouvertes.fr/tel-00580668.

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Dans ce travail, nous passons en revue les efforts de formulation et de préformulation pharmaceutiques pertinentes pour les nouvelles modalités d'hyperthermie magnétiquement induite dans le traitement des lésions cancéreuses pour lesquelles une thermothérapie est indiquée, ou pour des indications de novo dans certaines situations cliniques. Nous introduirons d'abord les principes biologiques généraux sous-jacents à l'utilisation de l'hyperthermie, compte tenu des moyens techniques pour générer l'hyperthermie actuellement accessibles, nous détaillerons plus précisément différentes modalités mag

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30

Costa, Joana Filipa Simões. "Natural based in-situ gelling hydrogels for prolonged drug delivery purposes." Master's thesis, 2020. http://hdl.handle.net/10316/94056.

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Dissertação de Mestrado Integrado em Engenharia Química apresentada à Faculdade de Ciências e Tecnologia<br>The work described in this dissertation is a contribution to a financed research project between the University of Coimbra and a pharmaceutical company, which aims to design an injectable in situ forming drug delivery system for controlled and prolonged drug release. The primary goal of this work is the development of a hydrogel, part of that same system, from polysaccharides crosslinked by Michael addition. This objective can be further divided into specific steps to reach this goal, na

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