Design of monitoring ph pool water of catfish breeding using GSM 900A module on arduino. The purpose of this research is to design a monitoring system to support catfish breeders in knowing the acidic and alcali pH levels water. Arduino Nano is a programmable tool for processing water pH sensor reading data. The workings of this tool is, when the pH sensor which is an input is put in water, the…
This study aims to obtain biosurfactant producing bacteria originating from the pond mud of IPAL in the palm oil industry at PT. Sawit Asahan Indah, Ujung Batu, Rokan Hulu, Riau Province. This study uses a survey method. Mud samples are taken from the Contact pond by using a sample bottle, then inserted into the cool box, then taken to the laboratory. Furthermore, 5 grams of mud samples were we…
Island rentals in Indonesia to foreign parties violate the principles of an island nation that emphasizes the integration between land, sea and air dimensions in carrying out national development. It can also eliminate the integration of the sea dimension or waters in national development. in the National Long-Term Development Plan (RPJPN), one of the points of the long-term development mission…
ABSTRACT In the Toba Batak tribe community, especially Batak Toba students partuturan marga very important as determining the kinship system. The partuturan also serves as a bridge in the implementation of adat rules of Dalihan Na Tolu in the Toba Batak community. Partuturan marga is considered important for the Toba Batak community is who we are at Dalihan Na Tolu. Partuturan marga with cla…
Heat pipe is a heat conductor with a certain size containing a special liquid as a conductor of heat from the tip of the evaporator to the tip of the condensor, this study uses a heat pipe made of copper pipe has an outer diameter of 9.5 mm and a length of 400 mm using working acetone fluid with filling the ratio of 80% of the total evaporator volume is 1.8 ml. Previous research has examined th…
The adsorption cooling system is one of the technologies for air conditioning and refrigeration systems that are energy efficient and environmentally friendly. The double bed adsorption cooling system with silica gel as adsorbent and water as an adsorbate, and the performance of the system were examined experimentally. The adsorption cooling system consists of two u-tube adsorber with finned tu…
Background of this research is the important of decision making in an administrative organization, so as the school along with issue’s development of human resources, then come out ideas about the important of society participate on that is facilitated by school committee in making decisions in school. This too, instructs by decision of Indonesian Minister of Education No. 044/U/2002, here, s…
Coconut fiber contains a quite high amount of activated carbon which is not yet been optimally utilized. This research aims to utilized of coconut fiber as main ingredient in the making of charcoal briquette and to get the best concentration of sago adhesive. The method of this research used Completely Random Design (CRD) which consist of 5 treatment and each treatment was repeated 3 times. Th…
Tujuan penelitian mendeskripsikan ketepatan penggunaan konjungsi koordinatif dalam media cetak di pekanbaru. hasil penelitian menunjukan ditemukan sejumlah konjungis koordinatif yang digunakan yaitu adalah, apalagi, atau, dan, hanya, kemudian, lalu, padahal, sedangkan, serta, tetapi, yaitu, yakni