This study aims to the interaction between catfish populations and type of growing media on growth yield spinach (Amaranthus sp.) Cultivated by aquaponics system. research was conducted using an experimental method (experiment), from July August 2020 in area PUSKOPAD complex, Tanjungsari District, Sumedang Regency. at altitude 850 m above sea level. The design used Split Plot Design with basic ...

Abstract Biofilters are effectively used for drinking water treatment. However, the long ripening time of virgin media manganese (Mn) removal is a major concern. In this study, influence flow regime on pumice medium was investigated. For purpose, pilot-scale experiments were performed to compare start-up flow-through and recirculating filter columns using inherent inoculation with same groundwa...

In this study, the method according to Indonesian National Standard (SNI) was applied. The objects test in form of cylindrical concrete which fine aggregate pumice sand and ordinary sand. made were tested for compressive strength. There 6 study with a size 15 cm x 30 cm. detail, 3 sand, while other coarse all crushed stone. result shown use as substitute can reduce strength by 23.53%. However, ...

Introduction Denim as a fabric, has received the widest acceptance among all textile products. It has had an incredible influence on consumers both socially and culturally (Paul 2015). This twill cotton fabric usually has warp threads indigo dyed while weft remains plain white. The warp faced fabric therefore looks blue on one side and white on reverse. The warp being ring dyed, creates denim’s...

A novel concept in internal curing of High Performance Concrete is based on dispersing very small, saturated lightweight aggregates (LWA) in the concrete, containing sufficient water to counteract self-desiccation. With this approach, the amount of water in the LWA can be minimized, thus economizing on the amount of the LWA. In this study, the pore structure of different size fractions of pumic...

In this study, the use of synthetic stones and peach kernels in denim stone washing process instead pumice was investigated. The performance each alternative identified with different methods, i.e. conventional, low liquor, spraying methods. effects were compared. Moreover, energy water consumption equivalent carbon dioxide emission method analyzed. results indicated that although led to best a...

The purpose of this study was to describe the radiological features of pleural, parenchymal and mediastinal damage due to occupational inhalation of pumice. In total, 31 workers were evaluated for annual follow-up. Spiral computed tomography (CT) was obtained in the three patients with evident parenchymal abnormalities at chest radiograph. High-resolution computed tomography (HRCT) was performe...

This study evaluated the clinical and histological manifestations produced by the submucuous implant of abrasive dental materials in the rat tongue. A total of 128 rats were divided into 4 groups of 32 rats each, according to the material selected for the implant: Herjos-F prophylactic paste both in its normal composition as well as lacking its abrasive components, SS White pumice stone and the...