Menentukan Koefisien Ekspansi Linier Batang Kuningan Dengan Teknik Espi (Electronic Speckle Pattern Interferometry)

Telah dilakukan eksperimen untuk menentukan koefisien ekspansi linier batang kuningan dengan teknik ESPI (Electronic Speckle Pattern Interferometry). Objek uji yang digunakan terbuat dari kuningan dengan diameter 45 mm, panjang 44 mm, dan dikenai beban thermal dari temperatur 30°Csampai dengan 40°C menggunakan heater (pemanas) yang ditempelkan erat dibelakang objek. Data citra spekel selama pemanasan diamati dan setiap selang waktu 1 menit disimpan di memori komputer untuk diproses. Pemrosesannya dilakukan dengan cara mensubtraksikan (mengurangkan) ke dua citraspekel pixel per pixel dan hasilnya ditampilkan di layar monitor dalam bentuk pola frinji. Dari eksperimen diperoleh harga koefisien ekspansi linier kuningan α = (1,96 ± 0,02)10-5/°C dengan standard deviasi terhadap rata-rata sebesar 1,02%.An experiment to determine the linear coefficient of expansion for the brass rod have been done by using the ESPI (Electronic Speckle Pattern Interferometry) technique. The specimen we used were brass with diameter 45 mm, length 44 mm, and thermal loaded from temperature 30°C up to 40°C use heaters behind object. The image speckle data for each 1 menit during thermal were record by the computers. Its process done by subtraction to image speckle data pixel by pixel, and the result presented on monitor screen in the fringe pattern. From experiment obtained that the average value of the linear coefficient of expansion for the brass is, α = (1,96 ± 0 ,02)10-5/°C with the deviation from average value is 1.02 %

Penekanan Visi dan Misi Pensyarah Cemerlang Pendidikan Islam dalam Pelaksanaan Pengajaran dan Pembelajaran

This article discusses the importance of vision and mission of the Islamic Education Lecturers (IELs) in teaching and learning (TnL). This study was fully conducted through qualitative method via case study. Six IELs were selected as participants and willing to be interviewed, and the data from the interview were supported by three Heads of Islamic Education Unit, 12 lecturers and 12 students. The data were triangulated with the data obtained through observation and document analysis. The data were analysed through N’Vivo software to generate a pattern of themes and characteristics of the vision and mission in TnL. The result found that there were six elements of vision and mission emphasized by the IELs in TnL. Five of them had formed a pattern. That five elements were; students receiving and appreciating, TnL objective achieved, spreading da’wah, moulding students attidtude and thinking, and achieving success in the world and the hereafter. Therefore, a model which is named as Model of the Vision and Mission Practice for the Excellent Islamic Education Lecturers was deloped. From the overall view, the emphasis on achieving mission and vision helps the IELs to successfully conduct TnL inside and outside classroom

Global overview of the management of acute cholecystitis during the COVID-19 pandemic (CHOLECOVID study)

Background: This study provides a global overview of the management of patients with acute cholecystitis during the initial phase of the COVID-19 pandemic. Methods: CHOLECOVID is an international, multicentre, observational comparative study of patients admitted to hospital with acute cholecystitis during the COVID-19 pandemic. Data on management were collected for a 2-month study interval coincident with the WHO declaration of the SARS-CoV-2 pandemic and compared with an equivalent pre-pandemic time interval. Mediation analysis examined the influence of SARS-COV-2 infection on 30-day mortality. Results: This study collected data on 9783 patients with acute cholecystitis admitted to 247 hospitals across the world. The pandemic was associated with reduced availability of surgical workforce and operating facilities globally, a significant shift to worse severity of disease, and increased use of conservative management. There was a reduction (both absolute and proportionate) in the number of patients undergoing cholecystectomy from 3095 patients (56.2 per cent) pre-pandemic to 1998 patients (46.2 per cent) during the pandemic but there was no difference in 30-day all-cause mortality after cholecystectomy comparing the pre-pandemic interval with the pandemic (13 patients (0.4 per cent) pre-pandemic to 13 patients (0.6 per cent) pandemic; P = 0.355). In mediation analysis, an admission with acute cholecystitis during the pandemic was associated with a non-significant increased risk of death (OR 1.29, 95 per cent c.i. 0.93 to 1.79, P = 0.121). Conclusion: CHOLECOVID provides a unique overview of the treatment of patients with cholecystitis across the globe during the first months of the SARS-CoV-2 pandemic. The study highlights the need for system resilience in retention of elective surgical activity. Cholecystectomy was associated with a low risk of mortality and deferral of treatment results in an increase in avoidable morbidity that represents the non-COVID cost of this pandemic

Identifying Items for “Self-Reflection” as a Religious Factor to Succeed in the Pre-Sea Training

Self-reflection has become a necessary skill to achieve the goal students set for themselves to be successful in pre-sea training. It helps students to improve their actions in critical situations, primarily when supported by religious practices. This study aimed to identify items that represent self-reflection as a religious factor for success in pre-sea training. A three-round Delphi approach was adopted in which ten experts were selected who met the necessary condition to participate in the study. Data were analyzed quantitatively using SPSS version 23 for median and IQR. The study found that self-reflection can be implemented through meditation and self-evaluation, the act of repentance, and returning to the source of religion. However, the experts felt that isolation is unsuitable for them as a ship's crew. They are advised to find other methods of meditation and self-assessment, such as self-contemplation. Students should return to the sources of religion, including the Quran and Sunnah, by reading books and online references and also seek the help of knowledgeable and pious people. However, experts pointed out how difficult it is for a Muslim to reach out to this pious person when he is the only Muslim on board. This study has developed 18 practices for students to implement self-reflection in the form of meditation and self-contemplation

The impact of implementing Imam al-Ghazali’s perception on self-monitoring (Muraqabah)on the development of healthy emotions among marine students during the pre-sea training

Self-monitoring is considered as a crucial step in mastering self-regulation skill, which brings a person closer to achievement set up earlier. This study aims to investigate the implementation of self-monitoring in the light of Imam al-Ghazali’s perception, known as muraqabah and to explore the impact of implementing muraqabah on the development of healthy emotions. The number of 376 students were randomly selected from five public and private higher institutions that offering Marine-related courses. The students were all Muslims and have completed the pre-sea training. A set of questionnaire was developed from items selected through experts’ consensus of opinion (three-round modified Delphi method). The data collected were analysed descriptively (median and inter-quartile range) and inferentially (Spearman rhocorrelation analysis) using SPSS version 24. The study found that the level of muraqabah during the pre-sea training and the level of healthy emotions after completing the pre-sea training were both high (Med=4.00, JI==1.00). All items of muraqabah during the planning phase and the development of healthy emotions after the pre-sea training were positively and moderately correlated (rs(376)=.459, p<.001). The result shows that the implementation of muraqabah before the students implement the strategy to succeed the pre-sea training increases the development of healthy emotions after the students returned from the pre-sea training. It also shows that self-monitoring which enhances through religious valueshelps students to become emotionally healthy, thus, it develops healthy image about the world of seafaring

Global overview of the management of acute cholecystitis during the COVID-19 pandemic (CHOLECOVID study)

Background: This study provides a global overview of the management of patients with acute cholecystitis during the initial phase of the COVID-19 pandemic. Methods: CHOLECOVID is an international, multicentre, observational comparative study of patients admitted to hospital with acute cholecystitis during the COVID-19 pandemic. Data on management were collected for a 2-month study interval coincident with the WHO declaration of the SARS-CoV-2 pandemic and compared with an equivalent pre-pandemic time interval. Mediation analysis examined the influence of SARS-COV-2 infection on 30-day mortality. Results: This study collected data on 9783 patients with acute cholecystitis admitted to 247 hospitals across the world. The pandemic was associated with reduced availability of surgical workforce and operating facilities globally, a significant shift to worse severity of disease, and increased use of conservative management. There was a reduction (both absolute and proportionate) in the number of patients undergoing cholecystectomy from 3095 patients (56.2 per cent) pre-pandemic to 1998 patients (46.2 per cent) during the pandemic but there was no difference in 30-day all-cause mortality after cholecystectomy comparing the pre-pandemic interval with the pandemic (13 patients (0.4 per cent) pre-pandemic to 13 patients (0.6 per cent) pandemic; P = 0.355). In mediation analysis, an admission with acute cholecystitis during the pandemic was associated with a non-significant increased risk of death (OR 1.29, 95 per cent c.i. 0.93 to 1.79, P = 0.121). Conclusion: CHOLECOVID provides a unique overview of the treatment of patients with cholecystitis across the globe during the first months of the SARS-CoV-2 pandemic. The study highlights the need for system resilience in retention of elective surgical activity. Cholecystectomy was associated with a low risk of mortality and deferral of treatment results in an increase in avoidable morbidity that represents the non-COVID cost of this pandemic