Spark Ignition of Monodisperse Fuel Sprays

A study of spark ignition energy requirements was conducted with a monodisperse spray system allowing independent control of droplet size, equivalent ratio, and fuel type. Minimum ignition energies were measured for n-heptane and methanol sprays characterized at the spark gap in terms of droplet diameter, equivalence ratio (number density) and extent of prevaporization. In addition to sprays, minimum ignition energies were measured for completely prevaporized mixtures of the same fuels over a range of equivalence ratios to provide data at the lower limit of droplet size. Results showed that spray ignition was enhanced with decreasing droplet size and increasing equivalence ratio over the ranges of the parameters studied. By comparing spray and prevaporized ignition results, the existence of an optimum droplet size for ignition was indicated for both fuels. Fuel volatility was seen to be a critical factor in spray ignition. The spray ignition results were analyzed using two different empirical ignition models for quiescent mixtures. Both models accurately predicted the experimental ignition energies for the majority of the spray conditions. Spray ignition was observed to be probabilistic in nature, and ignition was quantified in terms of an ignition frequency for a given spark energy. A model was developed to predict ignition frequencies based on the variation in spark energy and equivalence ratio in the spark gap. The resulting ignition frequency simulations were nearly identical to the experimentally observed values

Agama dan Kebangsaan: Pluralitas, Budaya dan Ruang Virtual

Artikel Pengabdian Kepada Masyarakat ini menggali relasi antara agama dan gereja dengan nasionalisme dalam konteks budaya, pluralitas dan realitas virtual. Kekristenan di Indonesia perlu menggunakan teks politik dan budaya dengan memerhatikan secara serius konteks pluralitas dan cyber untuk mengembangkan konsep teologi lokal yang didasarkan pada dokumen-dokumen politik Indonesia. Berbasis pada teori civil sphere dan virtual space artikel ini mengunakan observasi, penelitian lapangan dan dokumen untuk mengembangkan teologi yang mengarahkan kepada relasi mutual dengan agama-agama lain dan sesama warga bangsa. Memanfaatkan Zoom dan media online kegiatan PkM, menggunakan seminar online, yang dilakukan dalam kerjasama dengan Lakpesdam Nahdlaltul Ulama Sulawesi Tenggara, tanggal 30 Juni 2020. Artikel ini berkesimpulan bahwa dalam konteks Indonesia, teologi Indonesia mengandaikan perlunya teks politik dan budaya untuk membangun lokal teologi yang dapat membangun hubungan saling memahami dengan komunitas agama lain.This social service (Pengabdian Kepada Masyarakat-PkM)’s article explores relationship between religion and church with nationalism in the context of culture, plurality and virtual reality. Christianity in Indonesia needs to employ political and cultural texts and consider seriously plurality and cyber context to develop the concept local theology that based on Indonesian political documents. Based on theories of civil sphere and virtual space, this articleemploys observation, field research and documental research approaches to develop theology that leads toward mutual relationship with religious others and fellow citizens. Using Zoom and online media platform this PkM’s activity through online seminar hosted by Lakpesdam Nahdlaltul Ulama, Southeast Celebes, in June 30, 2020. This article concludes that in Indonesia context, Indonesia theology prerequisites the employment of political and cultural texts to build a local theology that open for progressive relationship with people of other religions

Mutual Transformation in the Early Histories of Christianity and Islam

This article examines mutual relationships in the historical teachings of Christianity and Islam. Drawing on John B. Cobb, Jr’s  mutual transformation theory, the article argues that early Christians and Muslims scholars have learned from other traditions in developing their religious teachings. I employ historical writings on the key figures and the early scholars of both religions. Based on documentary research, this article illustrates the mutual contact with other religious communities in the history of Christianity and Islam. Both Christian and Muslim Classical philosophers touch upon classical Greek Philosophers to develop intelectual traditons and teachings. As a result of the encounter, mutual transformation invites people to be involved in a deep dialogue and to be openhearted to learn, from the teachings of other religious traditions

Durvalumab: an investigational anti-PD-L1 monoclonal antibody for the treatment of urothelial carcinoma.

Our expanding knowledge of immunotherapy for solid tumors has led to an explosion of clinical trials aimed at urothelial carcinoma. The primary strategy is centered on unleashing the immune system by releasing the inhibitory signals propagated by programmed cell death-1 (PD-1) and its ligand programmed cell death ligand-1 (PD-L1). Many antibody constructs have been developed to block these interactions and are used in clinical trials. The Food and Drug Administration has already approved a number of checkpoint inhibitors such as anti-cytotoxic T-lymphocyte-associated protein 4 (CTLA4) monoclonal antibodies including ipilimumab; anti-PD-1 monoclonal antibodies including nivolumab and pembrolizumab; anti-PD-L1 antibodies including atezolizumab, avelumab, and durvalumab. One of the latest inhibitors is durvalumab, which is a high-affinity human immunoglobulin G1 kappa monoclonal antibody and blocks the interaction of PD-L1 with PD-1 and CD80. Currently, there are a number of ongoing trials in advanced urothelial carcinoma both using durvalumab monotherapy and in combination with other targeted therapies. In addition, durvalumab is being investigated in the non-muscle-invasive urothelial carcinoma, which is centered around intravenous formulations. These exciting developments have added a significant number of therapies in a previously limited treatment landscape

Suid-Afrika se volhoubaarheid in die lig van wêreldbeelde: Prakties-teologiese perspektiewe

Sustainability in South Africa in the light of worldviews: Practical theological perspectives. According to the index of Fund for Peace (FFP) regarding the sustainability of different countries, the situation in South Africa is unfavourable due to phenomena such as a growing demographic pressure on natural resources and unequal distribution of wealth. This condition can be attributed to a greater or lesser extent to the way in which South Africa is governed by the ruling party. The researchers investigate whether this unsustainable situation could possibly be connected to the worldview(s) of the ruling party. The concept worldview is briefly described and analysed in the context of the composition and development of the ruling political party. After that, some connections between worldview and sustainability are examined. The article concludes by exploring the way in which Christians who want to obey God’s Word in all aspects of their lives, should think about sustainability and about what they could do to improve the situation in South Africa. The central theoretical argument of this article is that a reformational worldview can provide a framework for people to evaluate and change, if necessary, their thinking, decisions and behaviour in order to promote sustainability in South Africa to the benefit of all her citizens

SPIRITUAL INTELLIGENCE AS THE POLITICS OF MULTICULTURALISM AMONG JAVANESE MUSLIM MIGRANTS IN MALUKU

How does spiritual intelligence serve as foundation for multicultural politics? This article explores how spiritual intelligence becomes a multicultural political base among the Javanese Muslims who immigrated to Maluku Province. The spiritual intelligence in this study refers to the understanding of Javanese values, i.e., accepting what’s given by life (nrimo ing pandum), empathy (tepa salira), and beautifying the world (memayu hayuning bawana) as well as how they enrich pluralism in Maluku. Previous studies on the topic mostly focused on the religious factor and neglected cultural aspects, especially among migrants who brought their cultural traits with them to their new place. Based on ethnographic research through observation and in-depth interviews with 60 Javanese migrants in Waihatu, Maluku, the research shows that multicultural politics among Javanese Muslim migrants cannot be separated from spiritual intelligence on Javanese values so that interreligious social solidarity is sustainable. Spiritual intelligence in this article highlights that Javanese migrants’ adoption of Islamic values in Maluku is connected to their philosophical foundation of Javanese values

An Analysis of Communication Strategies of Salatiga Municipality on Instagram during the Covid-19 Pandemic

Introduction: Covid-19 cases in Indonesia reached their peak in mid-June 2021. The peak has caused all city governments in Indonesia to provide accurate and reliable information for all the citizens in tackling the spread of the virus. Salatiga is one of the city governments that successfully handled this condition. Therefore this study will analyze the communication strategies the Salatiga City Government used to disseminate information to the public via Instagram.Methods:This study uses a qualitative analysis approach to assess the content of the text data and information related to coronavirus published on the Instagram of Salatiga Municipality, called: @humaskotasalatiga.Findings: This study found that in implementing the strategies, the Salatiga City Government used six principles of System Theory: system transformation, openness, interdependence, negative entropy, equifinality, and requisite variety. This study also recommends that the Salatiga City Government communicate information clearly and honestly, organize information management for government leaders and government officials to provide the most up-to-date information, and construct comprehensive governmental health risk communication systems.Originality: Many studies have been done on communication strategies by Salatiga Municipality. However, no study analyzes the communication strategies used by Salatiga Municipality, primarily through Instagram, during the pandemic. Therefore, this study analyzes how Salatiga Municipality the communication strategies through Instagram

Perubahan Agama Minahasa dan Kekristenan dalam Konstruksi Perjumpaan Simbol Sakral pada Ritual di Watu Pinawetengan

This article aims to explore the conversion of Minahasa and Christianity religion through mutually constructed efforts carried out by the community of ritual practitioners in Watu Pinawetengan. This research focuses on the mutual change between Minahasa religion and Christianity in rituals through the construction of a symbolic encounter by the ritual-playing community at Watu Pinawetengan. For ritual practitioners, Watu Pinawetengan is a sacred place Tou Minahasa (Minahasa man) that is located in North Sulawesi Province, Minahasa Regency. Individuals in a community construct the meaning of each symbol, thus creating a paradigm of religion. Sacred symbols refer to the essence of a belief in religion, so it is crucial in describing the existence of a religion. The data is taken through the use of qualitative methods by conducting observations, interviews, library studies, and documentary studies. The findings of this study show that changes in sacred symbols in rituals have been constructed in Minahasa and Christian discourses, resulting in a mutual change in both religions. Change occurs dialectically and is strengthened by the legitimacy of the ancestral spirit.AbstrakArtikel ini bertujuan untuk menggali perubahan agama Minahasa dan Kristen melalui upaya saling mengonstruksi yang dilakukan oleh komunitas pelaku ritual di Watu Pinawetengan. Fokus penelitian pada perubahan bersama, antara agama Minahasa dan Kristen dalam ritual melalui konstruksi perjumpaan simbol oleh komunitas pelaku ritual di Watu Pinawetengan. Bagi pelaku ritual, Watu Pinawetengan merupakan tempat sakral Tou Minahasa (manusia Minahasa) yang berada di Provinsi Sulawesi Utara, Kabupaten Minahasa. Individu-individu dalam komunitas mengonstruksi makna dari setiap simbol sehingga menciptakan paradigma fundamen tentang agama. Simbol sakral merujuk pada esensi dari suatu kepercayaan dalam agama, sehingga bersifat krusial dalam menggambarkan eksistensi suatu agama. Data diambil melalui penggunaan metode kualitatif dengan melakukan observasi, wawancara, studi pustaka, dan studi dokumenter. Temuan dari studi ini memperlihatkan perubahan simbol sakral dalam ritual telah dikonstruksi dalam diskursus agama Minahasa dan Kristen, sehingga mengakibatkan perubahan bersama pada kedua agama tersebut. Perubahan terjadi secara dialektis dan diperkuat dengan legitimasi roh leluhur.

Impact of New Generation Wide-Base Tires on Fuel Consumption

This study combined multiple approaches to evaluate the structural and economic impact of using new-generation wide-base tires (NG-WBT) in New Brunswick, Canada. A three-dimensional finite-element model of a typical pavement structure used in New Brunswick was used to predict critical pavement responses. The model includes measured tire-pavement contact forces among other variables overlooked in conventional flexible pavement analysis approaches. Using the model output, regression analysis was performed to predict the responses under various loadings to avoid performing the time-consuming finite-element analysis. Eight-year weight-in-motion data and critical pavement responses were used in transfer functions to predict pavement damage and the corresponding progression of an international roughness index (IRI) during a 60-year analysis period. Most pavement responses from NG-WBT compared with dual-tire assembly (DTA) were 20% and 30% higher in this case. The smallest difference was the vertical strain on top of the subgrade. The life cycle cost analysis (LCCA) considered a reduction in fuel consumption because of the use of NG-WBTs. Two scenarios were analyzed: (1) Case A, in which maintenance was performed periodically and independent of IRI values, and (2) Case B, in which the IRI threshold triggered maintenance. A reduction in fuel costs was significant in both cases. Maintaining a low pavement IRI would increase vehicle and truck fuel cost savings. The results indicate that the agency cost to maintain pavement used by NG-WBT is expected to be between CAD 7,703 to CAD 8,840 (2019 dollars) for 10% and 20% of all tandem axles using NG-WBT per one kilometer for a 60-year analysis period. The annual worth of such savings would be CAD 298 and CAD 342 (2019 dollars), respectively. In contrast, fuel savings per truck-km is expected to be CAD 30,471 to CAD 60,119 (2019 dollars) for 10% and 20% of all tandem axles using NG-WBT per one kilometer for the same analysis period, respectively. The annual worth of such savings would be CAD 1,100 and CAD 2,172 (2019 dollars) per one kilometer, respectively. Additionally, the trucks would save, annually, CAD 0.42 and CAD 0.107 per ton transported per kilometer for 10% and 20% NG-WBT market penetrations, respectively