Studi Eksperimental Pengaruh Diameter dan Kuat Tekan Inklusi terhadap Kuat Tekan Mortar

Penelitian ini bertujuan untuk menyelidiki pengaruh diameter dan kuat tekan inklusi terhadap kuat tekan mortar. Untuk mendapatkan kuat tekan inklusi yang bervariasi, inklusi dalam penelitian ini adalah agregat buatan dari material mortar yang dimasukan ke dalam benda uji. Penelitian sejauh ini mengatakan inklusi berbentuk silinder adalah bentuk yang memberikan kuat tekan paling tinggi. Oleh karena itu muncul usulan dalam penelitian ini untuk meneliti bagaimana pengaruh diameter dan kuat tekan inklusi bentuk silinder terhadap kuat tekan mortar. Pada penelitian ini digunakan 4 variasi diameter inklusi yaitu ukuran 11,7 mm, 20,8 mm, 29,7 mm, dan 45,7 mm serta 5 variasi kuat tekan inklusi yang didapat dari variasi campuran semen dan pasir berupa 1:3,81; 1:3,21; 1:2,62; 1:2,02 serta 1:1,42. Penelitian ini meninjau pengaruh diameter dan kuat tekan inklusi dari benda uji berukuran 100x100x50 mm. Pengujian yang dilakukan dengan pembebanan uniaksial (satu arah) dan menggunakan load cell untuk mengetahui beban maksimum yang dihasilkan. Melalui penelitian ini diharapkan, selain mengetahui pengaruhnya terhadap kuat tekan benda uji, dapat juga mengetahui hubungannya terhadap pola retak benda uji dapat diamati saat pengujian dan dianalisa dengan menggunakan SAP 2000

Predictor Factors of Atherosclerosis and Atherosclerosis Plaque in Rheumatoid Arthritis Patients

Background: Atherosclerosis and cardiovascular diseases have been known as the cause of increasing mortality among rheumatoid arthritis (RA) patients. Carotid intima media thickness (CIMT) measurement by ultrasound has been used as surrogate marker of atherosclerosis and cardiovascular disease.Methods: A cross sectional study of 86 RA patients fulfills EULAR/ACR 2010 critera for RA was conducted to study proportion and predictor factors of atherosclerosis and atherosclerosis plaque in rheumatoid arthritis patients.Results: Atherosclerosis and plaque was found in 47,7% and 29 % of patients. Age ≥ 40 yo, hypertension and duration of illness ≥ 24 mo were associated with atherosclerosis in multivariate logistic regression analysis with OR 10.70 (95% CI: 2.93-39.10), 4.99 (95% CI: 1.15-21.61) and 3.66 (95% CI: 1.11-11.99) respectively. Whereas hypertension, presence of antiCCP antibody and age ≥ 40 yo, were associated with plaque formation with OR 3.96 (95% CI: 1.15-13.57), 3.20 (95% CI: 1.11-9.24) and 3.61 (95% CI: 1.03-12.63) respectively.Conclusions: Age ≥ 40 yo, hypertension and duration of illness ≥ 24 mo was the predictors ofatherosclerosis, while hypertension, presence of antiCCP antibody and age ≥ 40 yo was the predictors of atherosclerosis plaque

Pathogenesis of Atherosclerosis in Rheumatoid Arthritis

Increased morbidity and mortality in patients with rheumatoid arthritis (RA) is largely associated with cardiovascular disease. In this case, the factors that play a role is chronic inflammation. A chronic inflammatory associated with condition which accelerate atherosclerosis and increased cardiovascular morbidity and mortality. Inflammatory and atherogenic mediators have a role in pathogenesis of RA and atherosclerosis. Atherogenesis in RA start when cytokines from the inflamed synovial tissue are released into the systemic circulation. Circulating cytokines affects the function of other tissues such as adipose tissue, skeletal muscle, liver and vascular endothelium that would lead to proatherogenic transformation process such as insulin resistance, prothrombotic effects, pro-oxidative stress and endothelial dysfunction. Size, weight and durationof systemic inflammatory response in RA are the most important factor causing damage. IMT (Intima Media Thickness) measurement on common carotid arteries byB-mode ultrasound is a rapid non-invasive examination of the structural anatomy, reproducible and relatively low risks that are advantageous for assessing therisk of cardiovascular disease and monitoring disease progression

Efek Pemberian Pupuk Kandang Ayam Dan Waktu Aplikasi Terhadap Pertumbuhan Dan Produksi Tanaman Kubis Bunga (Brassica Oleracea L.)

Penelitian bertujuan untuk mengetahui efek pemberian pupuk kandang ayam dan waktu aplikasi terhadap pertumbuhan dan produksi tanaman kubis bunga. Penelitian dilaksanakan di lahan Perhutani Desa Panditan, Kecamatan Lumbang, Kabupaten Pasuruan dengan ketinggian ± 800 m dpl suhu rata-rata 20◦C-26◦C pH tanah  6 – 6,5 Penelitian dimulai bulan Maret - Juni 2018 dengan curah hujan rata rata 917,5 mm – 914,5 mm.Penelitian menggunakan Rancangan Acak Kelompok (RAK) dengan perlakuan pemberian pupuk kandang (pukan ayam) dan waktu aplikasi yang masing – masing diulang 4 kali sebagai berikut: P0: tanpa pukan, P1: pukan ayam15 ton ha-1 + 4 minggu sebelum tanam (MST), P2: pukan ayam 15 ton ha-1 + 8 MST, P3: pukan ayam 20 ton ha-1 + 4 MST, P4: pukan ayam 20 ton ha-1+ 8 MST, P5: pukan ayam 25 ton ha-1+ 4 MST dan P6: pukan ayam 25 ton ha-1+ 8 MST.Hasil penelitian menunjukkan bahwa pemberian pupuk kandang ayam 25 ton ha-1 dan waktu pemberian 8 MST menghasilkan pertumbuhan dan hasil terbaik yaitu sebesar 11,34 ton ha-1, sedangkan hasil yang lebih rendah jika tanpa pemberian pupuk kandang ayam adalah sebesar 7,52 ton ha-1

Analysis of polonium-210 and dose assessment in marine fishery muscle from Southern Coast of Sukabumi

The measured of 210Po concentration in the commercially fish muscle has been conducted in fish species collected in southern coast of Sukabumi in 2021. 210Po is a natural occurring radionuclide from the 238U series in the environment and become a concern due to radiotoxic effect for the health of consumers. This study aims to determine the concentration activity of 210Po and to evaluate the annual effective dose of 210Po on fishery products in southern coast Sukabumi. There were ten different species of marine fish were analyzed using an alpha spectrometer. The results showed that the highest concentration of 210Po activity was in a common dolphinfish at 13.57 ± 2.03 Bq Kg-1 dry weight. This activity value was exceeded tolerable limits as reported by the global recommended concentration of 210Po for fish was about 2.4 Bq Kg-1. The lowest concentration of 210Po was found in Pink ear emperor fish at 0.18 ± 0.10 Bq Kg-1 of dry weight, which below minimum threshold of limit concentration activity. The results of the investigation that the average effective dose from one year fish consumption in Sukabumi for adult consumers ranged from 1.05-112 (μSv/a), children (10 years) ranged from 2.27 – 243 (μSv/a), and infant consumers (1 year) ranged from 7.67 – 821 (μSv/a). The annual dose from 210Po intake in the recent study are lower from reference level of 1 mSv, therefore 210Po was not become a concern

Pengujian Black Box pada Aplikasi Penjualan Berbasis Web Menggunakan Metode Equivalence Partitioning

In a program or software certainly has some shortcomings in terms of comfort and accuracy to the needs of users (users), such as errors in user appearance, as well as effectiveness in the use of programs. Therefore, a way is needed to be able to fix the deficiency, by testing the program before it is used to the user. And the test is one way to determine whether a software has met the needs of users and specifications or still does not meet. If there is no checking process first, it can cause data error. With these problems, of course, it will hinder the use of the application. Therefore, the validation process is very considered. An application can be said to be of quality if it has gone through the testing stage. In the above, we conducted a blackbox test using the Equivalence Partitioning method, which can be interpreted as solving or dividing a program in the form of a domain that is entered into a data class in order to get a test case. Using this method, we earned quite varied points to test web application sales. The test in question includes things such as the design of the test scenario, the determination of the data to be tested, the test trial, the range of values, the determination of program functionality, conformity with existing databases, the results of documented research, to the conclusions obtained. The conclusion of testing using this method is that this application can run properly by meeting the criteria that meet the user's needs