Hasil Pencarian  ::  Simpan CSV :: Kembali

"One of the distinctive languages of Central Maluku, Naka’ela, was once spoken by a remnant language community on the north coast of Seram. Relying on data collected in Seram in 1978, Naka’ela has been among the Central Maluku languages included in studies of morphophonology (Collins 1983a, 1983b), areal phonology shift (1982, 2018a), and language classification (Collins 1983a). A fallacious, mechanistic classification of Naka’ela (Mahsun et al. 2008; Mukhamdanah 2015) was also published and has been recently disproven (Collins 2019a, 2019b). This essay will review some of the aspects of the Naka’ela language system by exploring what we can discern about verbal conjugation systems and genitive paradigms in this Central Maluku language. Based on contemporary reports from Seram (Sadrach Latue, p.c., 27-10-2018), the Naka’ela language, like so many others in Central Maluku, is no longer spoken; nor are there “rememberers” of this extinct language. In this setting of dead and forgotten languages, we recall the brutal genocides and culture murders in Australia (Daniel Nettle and Suzanne Romaine 2000). Recently, Dianne Biritjalawuy Gondarra, a Yolngu woman from northern Australia, explained that “culture is a shadow, it’s something that follows your everywhere, and part of culture is language, which connects me back to my land” (James Griffths 2020). This essay is intended to shed more light on Naka’ela and the complex setting of fading multilingualism in Central Maluku. The displaced, disregarded Naka’ela community survives in Seram, their land, but their language is only a shade, a ghostly memory."

"Penelitian ini didasarkan kebutuhan data intensitas radiasi matahari yang mendorong penggunaan sensor pyranometer yang semakin tinggi. Dalam rangka meningkatkan efisiensi kalibrasi pyranometer, perlu dikembangkan metode kalibrasi yang lebih efisien. Salah satu metode yang mampu memenuhi kebutuhan efektivitas kalibrasi pyranometer adalah Continous Sun Shade Method (CoSSM). Tujuan penelitian ini adalah menemukan teknik kalibrasi terbaik sebagai acuan metode kalibrasi pyranometer di Jakarta. Penelitian ini dilakukan di gedung BMKG Kemayoran Jakarta dari tanggal 9 Desember 2022 hingga 5 Februari 2023. Empat unit pyranometer UUT GHI, satu pyrheliometer (DNI), dan satu pyranometer standar dengan pembayang (DHI) digunakan dalam penelitian ini. Peneliti mengkombinasikan tiga faktor yaitu perbedaan jeda dengan 30, 60, dan 120 detik, data set dengan 10, 15, dan 20 data, serta data seri dengan 10, 15, dan 20 data. Data yang diperoleh kemudian dilakukan tiga tahapan filtrasi menggunakan python dan perhitungan manual. Nilai responsivitas yang dihasilkan kemudian dibandingkan dengan responsivitas kalibrasi di dalam ruangan yang terakreditasi menggunakan Mean Bias Difference . Hasil pengolahan data kalibrasi seharusnya menghasilkan 27 nilai responsivitas, namun hanya 16 teknik yang menghasilkan responsivitas karena kurangnya data akibat filtrasi. Hasil penelitian menunjukkan bahwa teknik dengan jeda 1 menit, 10 data set, dan 20 data seri menghasilkan nilai responsivitas dengan nilai RMSE paling kecil, 0,46. Oleh karena itu, teknik tersebut dapat dijadikan prototipe sistem kalibrasi CoSSM di luar ruangan di Jakarta.

---

This research is based on the need for solar radiation intensity data, which has led to an increasing utilization of pyranometer sensors. In order to enhance the efficiency of pyranometer calibration, it is necessary to develop more efficient calibration methods. One of the methods capable of meeting the effectiveness requirements of pyranometer calibration is the Continuous Sun Shade Method (CoSSM). The objective of this study is to identify the best calibration technique as a reference for pyranometer calibration methods in Jakarta. The research was conducted at the BMKG Kemayoran Building in Jakarta from December 9, 2022, to February 5, 2023. Four units of UUT GHI pyranometers, one pyrheliometer (DNI), and one standard pyranometer with shading (DHI) were used in this study. The researcher combined three factors: time interval differences of 30, 60, and 120 seconds, data sets of 10, 15, and 20, and data series of 10, 15, and 20. The obtained data underwent three stages of filtration using Python and manual calculations. The resulting responsiveness values were then compared to the responsiveness of accredited indoor calibration using the Mean Bias Difference method. The calibration data processing was expected to yield 27 responsiveness values, but only 16 techniques produced responsiveness due to data loss caused by filtration. The research results show that the technique with a 1-minute interval, 10 data sets, and 20 data series yields responsivity values with the smallest RMSE value of 0.46. Therefore, this technique can be used as a prototype for the CoSSM outdoor calibration system in Jakarta."

"Latar Belakang: Resin komposit single-shade merupakan resin komposit yang dapat menghasilkan warna menyerupai berbagai shade gigi tanpa tambahan pigmen. Resin komposit single-shade tetap memiliki potensi perubahan warna saat terpapar zat pewarna. Teh hitam dan oolong memiliki kadar tanin yang dapat mempengaruhi stabilitas warna resin komposit. Maka, dilakukan pengujian perubahan warna resin komposit single-shade setelah perendaman dalam larutan teh hitam dan oolong. Tujuan: Mengetahui perbedaan perubahan warna antara resin komposit single-shade yang direndam dalam larutan teh hitam dan oolong. Metode: Spesimen resin komposit single-shade dan konvensional nanohybrid (n = 42) dibagi ke dalam 6 kelompok, kemudian direndam dalam larutan teh hitam dan oolong selama 24 jam/hari dalam waktu 7 hari. Pengukuran perubahan warna dilakukan dengan colorimeter. Hasil: Perendaman dalam larutan teh hitam menghasilkan perubahan warna yang tidak sesuai pada resin komposit single-shade. Terdapat perbedaan perubahan warna signifikan antara resin komposit konvensional dalam kedua larutan teh, serta antara resin komposit single-shade dalam kedua larutan teh (p < 0.05). Kesimpulan: Perendaman resin komposit dalam teh hitam atau oolong menyebabkan perubahan warna resin komposit konvensional dan single-shade. Teh hitam menyebabkan perubahan warna lebih besar dibandingkan teh oolong pada kedua jenis resin komposit.

---

Single-shade composite resin is a composite resin that produces various teeth shades without additional pigments. Single-shade composite resin still has its color change potential when exposed to colorants. Black and oolong tea possess tannin contents that influence composite resin’s color stability. Therefore, single-shade resin composite’s color change was evaluated after its immersion in black and oolong tea solutions. Objective: To determine color change difference of single-shade composite resin after its immersion in black and oolong tea solutions. Methods: Single-shade and conventional nanohybrid composite resin specimens (n = 42) were divided into 6 groups, then immersed in black and oolong tea solutions for 24 hours/day for 7 days. Color change measurements were taken with a colorimeter. Results: Immersion in black tea resulted in unacceptable color change in single-shade composite resin. Significant difference in color change was found between conventional composite resin immersed in black and oolong tea, and between single-shade composite resin immersed in black and oolong tea (p < 0.05). Conclusions: Black and oolong tea immersion causes color change in conventional and single-shade composite resins. Black tea causes larger color change compared to oolong tea in both composite resins."

"Resin komposit merupakan bahan restorasi sewarna gigi yang dikenal mempunyai keunggulan estetis. Salah satu sifat estetisnya adalah efek bunglon, yakni kemampuan penyesuian warna dengan keadaan sekitarnya, yang ditandai dengan adanya pergeseran warna. Penelitian ini bertujuan untuk membuktikan adanya pergeseran warna pada resin komposit nanofiller. Jenis penelitian ini adalah studi eksperimental laboratoris. Terdapat satu kelompok kontrol resin komposit yang ditumpat di mold dan empat kelompok perlakuan yang ditumpat pada empat shade warna gigi tiruan akrilik yang telah dipreparasi. Uji warna dilakukan dengan prinsip spectrophotometer menggunakan alat vita easy shade pada 0 hari setelah penumpatan, serta 1 dan 7 hari setelah perendaman di dalam aquades. Analisis bivariat menunjukkan terdapat pergeseran warna pada resin komposit nanofiller di setiap shade.

---

Composite resin is a tooth-colored restorative material that is known to have an aesthetic advantage. One of its aesthetic properties is the chameleon effect which is defined as the color adjustment ability to the surrounding circumstance, which is marked by a color shifting of the composite resin. The aim of this study is to prove the existence of nanofiller composite resin color shifting. This research is a laboratory experimental study. There is one control group of composite resin which is filled in the mold and four treated group which is filled in four shades of prepared acrylic artificial teeth. The color test is carried out by a spectrophotometer principle using vita easy shade at 0 days after filling, and 1 and 7 days after immersion in distilled water. The bivariate analysis showed that there is a color shifting in nanofiller composite resin in each shade."