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"Colloid and interface science in pharmaceutical research and development describes the role of colloid and surface chemistry in the pharmaceutical sciences. It gives a detailed account of colloid theory, and explains physicochemical properties of the colloidal-pharmaceutical systems, and the methods for their measurement.The book starts with fundamentals in part I, covering fundamental aspects of colloid and interface sciences as applied to pharmaceutical sciences and thus should be suitable for teaching. Parts II and III treat applications and measurements, and they explains the application of these properties and their influence and use for the development of new drugs."

"Bridging academic research and industrial applications, this is the first modern approach to relate fundamental research to the applied science of colloids. This text examines the role of colloid and interface science in pharmacy, as well as pharmaceutical formulations and drug delivery. It then goes on to treat pharmaceutical suspensions and emulsions, including multiple emulsions, as well as liposomes and the role of nanotechnology in drug delivery. A final section is devoted to the hot topic of stem cell research."

"UK Colloids 2011, the first multi-day conference on the topic of colloid science held in the UK for many years, jointly organized by the RSC Colloid and Interface Science Group and the SCI Colloid and Surface Science Group. This title collects together a selection of 20 papers, mostly presented during the Conferenc"

"Interface problems arise when there are two different materials, such as water and oil, or the same material at different states, such as water and ice. If partial or ordinary differential equations are used to model these applications, the parameters in the governing equations are typically discontinuous across the interface separating the two materials or states, and the source terms are often singular to reflect source/sink distributions along codimensional interfaces. Because of these irregularities, the solutions to the differential equations are typically nonsmooth or even discontinuous. As a result, many standard numerical methods based on the assumption of smoothness of solutions do not work or work poorly for interface problems."

"Sebagai upaya mengatasi pandemi COVID-19 di Indonesia, Pemerintah Republik Indonesia mewajibkan masyarakat untuk menggunakan aplikasi PeduliLindungi sebagai solusi utama dalam pencegahan dan penanganan COVID-19. PeduliLindungi dirancang untuk memenuhi segala kebutuhan terkait COVID-19, tetapi pada kenyataannya masih ditemukan permasalahan dari segi teknis dan user experience (UX) yang membuat implementasinya tidak sesuai yang diharapkan. Selain itu, kegunaan aplikasi ini dipertanyakan ketika pandemi COVID-19 berakhir di masa depan. Melihat publikasi terkait aplikasi PeduliLindungi sampai saat ini, belum ditemukan publikasi yang membahas inovasi yang dibutuhkan agar aplikasi ini dapat terus bermanfaat saat pandemi COVID-19 dan setelahnya. Oleh karena itu, penelitian ini bertujuan untuk menjadi penelitian pertama yang mengidentifikasi kebutuhan pengguna terkait aplikasi PeduliLindungi yang belum terpenuhi, serta merancang inovasi untuk membuat aplikasi ini bermanfaat secara berkelanjutan menyusul rencana transisi ke endemi COVID-19. Pendekatan Design Science Research (DSR) digunakan untuk mencapai tujuan tersebut karena telah terbukti kecakapannya pada penelitian-penelitian sebelumnya. Melalui penerapan DSR dalam tiga iterasi, penelitian ini akan (1) menganalisis faktor-faktor yang memengaruhi pengguna untuk menggunakan aplikasi PeduliLindungi dengan menguji model penelitian, (2) mengidentifikasi permasalahan dan peluang inovasi fitur baru untuk aplikasi PeduliLindungi menurut pendapat ahli, kemudian (3) merancang antarmuka fitur baru tersebut dan mengevaluasinya ke pengguna. Hasil Iterasi I menunjukkan bahwa perceived usefulness, perceived ease of use, trust in technology, perceived anxiety of infecting others, dan health information orientation memengaruhi niat penggunaan aplikasi PeduliLindungi. Hasil Iterasi II mengungkapkan permasalahan relevan terkait kebutuhan pengguna dan keberlanjutan aplikasi PeduliLindungi, seperti masyarakat yang mulai lengah dengan dampak dan perkembangan COVID-19 dan juga kurangnya kesadaran masyarakat akan risiko kesehatan mereka dalam pandemi COVID-19. Kemudian, pelaksanaan Iterasi III menghasilkan rekomendasi desain antarmuka untuk fitur yang paling layak, baik dari sisi usability maupun keberlanjutannya, berdasarkan evaluasi terhadap pengguna aplikasi PeduliLindungi. Melalui penelitian ini, aplikasi PeduliLindungi diharapkan dapat berkembang menjadi aplikasi andalan masyarakat tidak hanya untuk kebutuhan terkait COVID-19 saat ini, tetapi juga kebutuhan pelayanan kesehatan lain di masa depan. Penelitian ini juga diharapkan dapat membuka jalan bagi penelitian selanjutnya untuk membahas keberlanjutan aplikasi PeduliLindungi.

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In an effort to overcome the COVID-19 pandemic in Indonesia, the Indonesian government mandates the use of PeduliLindungi application as the main solution for COVID-19 prevention and handling. PeduliLindungi is designed to meet all the public needs related to COVID-19, but in reality there are still problems from a technical and user experience (UX) perspective in PeduliLindungi that causes its implementation to not go as expected. Moreover, the utility of this app is called into question after the COVID-19 pandemic ends in the future. Looking at the existing publications related to PeduliLindungi to date, there have been no studies that discussed the innovations needed to ensure that this application could continue to be beneficial during the COVID-19 pandemic and beyond. Thus, this study aims to be the first research that identifies user needs related to PeduliLindungi that have not been met, while also designing innovations for the PeduliLindungi to be useful in a sustainable manner following the planned transition to the COVID-19 endemic. The Design Science Research (DSR) approach is used to achieve this goal, due to its proven prowess in previous studies. Through the application of DSR in three iterations, this research will (1) analyse the factors that influence users to use PeduliLindungi by testing the research model, (2) identify problems and opportunities for innovation of new features for PeduliLindungi according to expert opinion, then (3) design the interface of the new feature and evaluate it toward the user. Iteration I results show that perceived usefulness, perceived ease of use, trust in technology, perceived anxiety of infecting others, and health information orientation affect the intention to use PeduliLindungi. The results of Iteration II reveal relevant issues related to user needs and the sustainability of PeduliLindungi, such as people starting to be careless about the impact and development of COVID-19 and also the lack of public awareness of their health risks in the COVID-19 pandemic. Then, the implementation of Iteration III produces interface design recommendations for the most appropriate features, both in terms of usability and sustainability, based on evaluations of PeduliLindungi users. Through this research, hopefully PeduliLindungi can develop into the public's mainstay application, not only for current needs related to COVID-19, but also for other health service needs in the future. This research is also expected to pave the way for further research to discuss the sustainability of PeduliLindungi."

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Logam transisi dichalgogenides (TMDs) memperlihatakan sifat-sifat yang unik pada fase struktur monolayernya, yaitu celah pita langsung, yang menjadikannya kandidat menjanjikan dalam penerapannya dalam optoelektronik. Diantara TMDs tersebut, WS₂ memperlihatkan interaksi spin-orbit yang kuat sehingga dalam uji eksperimen dapat memisahkan pita-pita energi pada band valensinya hingga sebesar ~400 meV. Tidak seperti TMDs lainnya, puncak eksitonik pertamanya A berbentuk sangat tajam, sedangkan puncak eksitonik keduanya berbentuk lebih lebar dengan intensitas yang relatif lebih kecil jika dibandingkan puncak pertama. Untuk mendapatkan nilai eksitoniknya secara teori, khususnya puncak B, kami menerapkan metode Double-Grid. Efek-efek interaksi elektron-hole sendiri dibahas dengan membandingkannya terhadap yang dihitung pada level partikel independen. Perhitungan first principle yang kami lakukan dengan menerapkan efek interaksi spin-orbit menunjukkan terjadinya pergeseran celah pita energi ke wilayah energi yang lebih rendah sebesar 0.36 eV jika dibandingkan dengan perhitungan tanpa menggunakan efek spin-orbit. Lebih lanjut, efek spin-orbit ini juga menyebabkan pemisahan pada pita energi valensi tertingginya sebesar 410 meV. Dari sisi struktur eksitoniknya, interaksi spin-orbit menyebabkan terpecahnya puncak-puncak eksiton WS₂ monolayer menjadi dua bagian, khususnya pada puncak kedua dan ketiga

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Transition metal dichalcogenides (TMDs) display unique properties in their monolayer structures, namely a direct band-gap transition, which becomes a promising candidate for optoelectronics applications. Among them, WS₂ exhibits strong spin-orbit (SO) interaction which splits the electronic valence band as observed in the experimental data up to 400 meV. Unlike the other TMDs, the first excitonic peak A is very sharp for WS₂, while the secondary peak B is broader with smaller relative intensity. In this study, we perform first-principles calculations on the electronic band structure and solve the Bethe-Salpeter equation (BSE) for the complex dielectric function of monolayer WS₂ to study the effects of spin-orbit coupling on its excitonic structures. To resolve the excitonic peaks, in particular the B peak, we implement the double-grid method. We discuss the effects of electron-hole interaction on the absorption spectrum by comparing it with that calculated at the independent-particle level. Our first principle with spin-orbit calculation band structure shows spin-orbit coupling induce red-shifting of 0.36 eV compare to one without spin-orbit interaction. It also induces splitting of 400 meV on the valence band structure. From perspective of exitonic structure, spin-orbit coupling induces peak splitting on the second and third peak of WS₂ monolayer absorption optical spectra.

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