830 research outputs found
Electrochemical studies on mixtures of LiNi0.8Co0.17Al0.03O2 and LiCoO2 cathode materials for lithium ion batteries
No full text
STRATEGI DAKWAH PADA MEDIA SOSIAL (Studi Kasus terhadap Aam Amiruddin pada Twitter)
Get PDFPerkembangan teknologi mengakibatkan dakwah mengalami pergeseran ke arah digital. Hal tersebut didorong oleh tingginya kebutuhan mengakses informasi mengenai Islam melalui internet. Penulis melihat adanya peran penting Dai mempromosikan dakwah dalam media sosial, terutama di twitter. Penelitian ini mengkaji strategi dakwah Aam Amiruddin pada Twitter. Penulis memfokuskan pada tahapan strategi yang meliputi; perumusan strategi, implementasi strategi, dan evaluasi strategi. Pendekatan penelitian yang digunakan yaitu kualitatif dengan metode studi kasus, serta strategi pemilihan single case study. Wawancara mendalam dilakukan terhadap satu Dai, enam audiens pada Twitter, tiga audiens di luar twitter, serta satu admin yayasan dakwah. Selain itu, dilakukannya observasi terhadap tweet Dai Aam Amiruddin dari 2 Juni hingga 4 November 2018. Hasil penelitian menunjukkan bahwa perumusan strategi dakwah yang dilakukan Aam Amiruddin dengan melihat manfaat dari pesatnya teknologi internet. Lalu, mengimplementasikan penyampaian pesan yang sesuai dengan audiensnya. Namun, pada tahap terakhir, Aam kurang mengevaluasi proses komunikasi dakwah yang dilakukannya di Twitter.
Technological developments have resulted in a shift to digital preaching. This is driven by the high need to access information about Islam through the internet. The author sees an important role for preacher in promoting da'wah in social media, especially on twitter. This study examines da'wah strategy of Aam Amiruddin on Twitter. The author focuses on the stages of the strategy which includes; strategy formulation, strategy implementation, and strategy evaluation. The research approach used is qualitative with the case study method, as well as the single case study selection strategy. In-depth interviews were conducted with one preacher, six followers on Twitter, three non-followers of twitter, and one dakwah foundation administrator. In addition, author conducted observations on the tweets of Aam Amiruddin from June 2 to November 4, 2018. The results showed that Aam Amiruddin's formulation of da'wah strategies saw the benefits of the rapid development of internet technology. Then, implement the delivery of messages in accordance with the audience. However, at the last stage, Aam did not evaluate the dakwah communication process he was doing on Twitter
Alkali Activation of Metakaolin and Wollastonite: Reducing Sodium Hydroxide Use and Enhancing Gel Formation through Carbonation
Get PDFAbstract
Alkali activated materials (AAMs) offer significant advantages over traditional materials like Portland cement, but require the use of strong alkaline solutions, which can have negative environmental impacts. This study investigates the synthesis of AAMs using metakaolin and wollastonite, aiming to reduce environmental impact by eliminating sodium silicate and using only sodium hydroxide as an activator. The hypothesis is that wollastonite can provide the necessary silicon for the reaction, with calcium from wollastonite potentially balancing the negative charges usually countered by sodium in the alkaline solution. This study compares raw and carbonated wollastonite (AAM-W and AAM-CW) systems, with raw materials carefully characterized and binding networks analyzed using TGA, FT-IR, and XRD. The results show that while wollastonite can reduce the amount of sodium hydroxide needed, this reduction cannot exceed 50%, as higher substitution levels lead to an insufficiently alkaline environment for the reactions. The carbonation of wollastonite enhances the availability of silicon and calcium, promoting the formation of both N-A-S-H and C-A-S-H gels.Abstract
Alkali activated materials (AAMs) offer significant advantages over traditional materials like Portland cement, but require the use of strong alkaline solutions, which can have negative environmental impacts. This study investigates the synthesis of AAMs using metakaolin and wollastonite, aiming to reduce environmental impact by eliminating sodium silicate and using only sodium hydroxide as an activator. The hypothesis is that wollastonite can provide the necessary silicon for the reaction, with calcium from wollastonite potentially balancing the negative charges usually countered by sodium in the alkaline solution. This study compares raw and carbonated wollastonite (AAM-W and AAM-CW) systems, with raw materials carefully characterized and binding networks analyzed using TGA, FT-IR, and XRD. The results show that while wollastonite can reduce the amount of sodium hydroxide needed, this reduction cannot exceed 50%, as higher substitution levels lead to an insufficiently alkaline environment for the reactions. The carbonation of wollastonite enhances the availability of silicon and calcium, promoting the formation of both N-A-S-H and C-A-S-H gels
From slavery and colonialism to Black Lives Matter: New mood music or more fundamental change
No full textPURPOSE 2020 has proved to be a challenging year. In addition to the challenges of Covid 19, yet again, the USA has witnessed police brutality leading to the death of a Black man, George Floyd. The Black Lives Matter movement, founded in the US but now an international organisation which challenge white supremacy and deliberate harm against Black people, mobilised hundreds of thousands of people to take to the streets, across the globe. Increasingly, the protests focus not only on George Floyd’s murder, but also the continued failure to challenge the celebrity of those involved in the transatlantic slave trade and European imperialism. In this article, I will contend that many organisations are now re-examining their association with these historical wrongs against Black Africa and its diaspora. Further, I will contend but that the failure to highlight the role of Black chattel slavery and imperialism in the accumulation of economic, commercial and political benefits reaped by the global north is a source of shame for many firms and institutions but also, universities. APPROACH I have reviewed the online media for the latest developments in response to Black Lives Matter’s George Floyd campaign in 2020, and reviewed literature on the link between European global ambition and its impact on the Americas and sub-Saharan Africa. FINDINGS Internationally, there is a discernible change in outlook towards the importance of the evils of slavery and colonialism on the Black experience today. These small steps will require scholars to embark on a fresh reexamination of race, society and work. For decades, the slave trade and colonialism were issues rarely raised in government, firms and business schools. This will inevitably change, especially in those countries that are the main beneficiaries of Black chattel slavery and colonial exploitation. Much EDI practice is fundamentally, tokenism. A root and branch reappraisal will be needed to created more effective EDI policy and practice in support of race equality and anti-racism
A review: Reaction mechanism and strength of slag and fly ash-based alkali-activated materials
No full textAlkali-activated materials (AAM) are known to be environmentally friendly alternatives to cement-based materials because they can potentially reduce greenhouse gas emissions and reutilize industrial by-products/wastes. To study the factors influencing the strength of slag based alkali-activated materials (BFS-AAM), fly ash based alkali-activated materials (FA-AAM), slag, and fly ash-based alkali-activated materials (BFS/FA-AAM), and clarifying their reaction mechanisms, this paper reviews current knowledge about the mechanical properties and the reaction mechanisms of BFS-AAM, FA-AAM, and BFS/FA-AAM. The precursor requirements and the strength control factors are summarized. The control factors for the strength of BFS/FA-AAM are the BFS/binder ratio, the Na2O/binder ratio, the SiO2/Na2O ratio, and the w/binder ratio. Ion concentrations, determined by these control factors, play a decisive role in the development of strength. Generally, the strength is proportional to the BFS/FA ratio. The optimal values of the Na2O/binder ratio of BFS-AAM and FA-AAM are between 5.5% and 8% and between 7 and 10%, respectively. The optimal values of the SiO2/Na2O ratio of BFS-AAM and FA-AAM are between 0.85 and 1.4 and between 0.6 and 1, respectively. Increasing the w/binder ratio will only benefit workability but will affect the strength negatively. A w/binder ratio of around 0.4 may strike a balance between strength and workability.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Materials and Environmen
AAM - Politically Motivated Consumer Boycotts
No full textThis project contains the Author Accepted Manuscript (AAM) of the article accepted for publication in the Journal of Consumer Marketing. The study introduces Politically Motivated Consumer Boycotts (PMCBs) as a distinct form of political consumerism that emerges in response to brands’ perceived political alignment—particularly in polarized societies. Drawing on social movement theory and political consumerism literature, it examines the emergence and motivations behind such boycotts through a qualitative case study of the 2017 Pınar boycott in Turkey. The manuscript includes interview data, digital platform analysis, and a multi-level framework connecting macro-political context, digital mobilization, and consumer motivation.
The final Version of Record (VoR) will be available via the journal publisher (Elsevier). This version is shared here in accordance with the publisher's self-archiving policy
Kaidah ‘Aam, Khas dan Takhshish dalam Hukum Keluarga
Get PDFPronunciation is an expression with which one thing can be understood. However, the meaning of the pronunciation will be greatly influenced by something that goes hand in hand with it. The meaning of lafaz can mean aam (general), special (special), and Takhsis. This paper will explore how lafaz can mean am, distinctive, and takhsis, accompanied by an explanation of the rules/provisions that can influence it. This study uses the library research method, where later the author will explain the discussion by including examples from the Koran and Hadith to find a clearer understanding of a syara' proposition. The results of this study found that there are three family laws that have gone through the stages of the takhshish rule, where the existing 'aam' pronunciation from the syara' proposition is taken so that the meaning becomes narrower or limited.Lafaz merupakan suatu ungkapkan yang dengannya dapat dipahami satu hal. Akan tetapi makna dari lafaz itu akan sangat dipengaruhi dengan sesuatu yang bergandengan dengannya. Makna dari lafaz bisa saja bermakna aam (umum) khas (khusus), dan Takhsis. Tulisan ini akan mengetengahkan bagaimana lafaz dapat bermakna am, khas, dan takhsis dengan diiringi penjelasan kaidah/ketentuan yang dapat mempengaruhinya. Penelitian ini menggunakan metode library research dengan dimana nanti penulis akan memaparkan pembahasan dengan menyertakan contoh-contoh dari al-Quran dan Hadis untuk menemukan satu pemahaman yang lebih jelas dari satu dalil syara’. Hasil penelitian ini menemukan terdapat tiga hukum keluarga yang telah melalui tahapan kaidah takhshish, dimana lafaz ‘aam yang ada dari dalil syara’ ditakhshish sehingga maknanya menjadi lebih sempit atau terbatas
- …
