International journal of chemical & material sciences <p style="text-align: justify;"><strong>IJCMS </strong>is published in English and it is open to authors around the world regardless of the nationality. The issued frequency is annual or one issue per year publication.<br>ISSN 2632-9468</p> en-US <p>Articles published in the International Journal of Chemical &amp; Material Sciences (<strong>IJCMS</strong>) are available under Creative Commons Attribution Non-Commercial No Derivatives Licence (<a href="" target="_blank" rel="noopener">CC BY-NC-ND 4.0</a>). Authors retain copyright in their work and grant <strong>IJCMS&nbsp;</strong>right of first publication under CC BY-NC-ND 4.0. Users have the right to read, download, copy, distribute, print, search, or link to the full texts of articles in this journal, and to use them for any other lawful purpose.</p> <p>Articles published in <strong>IJCMS&nbsp;</strong>can be copied, communicated and shared in their published form for non-commercial purposes provided full attribution is given to the author and the journal. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (<em>e.g., post it to an institutional repository or publish it in a book</em>), with an acknowledgment of its initial publication in this journal.</p> (Editorial Office) (Vedran Vucic) Tue, 31 Dec 2019 00:00:00 +0000 OJS 60 Land use and environment physical condition on sedimentation and water discharge of lindu lake watershed <p style="text-align: justify;">Lindu lake sub-watershed has harmed by various human activities which do not pay attention to environmental sustainability principles. This research aims to know the influence of land use area and environment physical condition on sedimentation and water discharge in Lindu lake sub-watersheds. This research uses survey and non-experimental method on 3 rivers which are Langko (P1), Wongkodono (P2), and Kati (P3). The dependent variable in this research is land use area (area of the garden, shrubs, rice field, forest, and settlement) and environment physical condition (catchment area and average annual rainfall) and the independent variables are sedimentations and water discharge. The used statistical analysis is a multiple regression model. The result shows that the wider shrubs area (X<sub>2</sub>) reduces sedimentation (Y<sub>1</sub>) and increases water discharge (Y<sub>2</sub>). Each addition of one shrub unit will decrease sediment in amount of 0,208 mg/L and affects water discharge an amount of&nbsp; 0,258 m<sup>3</sup>/sec<sup>-1 </sup>with regression equation Y<sub>1</sub> = 185,903 - 0,208X<sub>2 </sub>– 587,269X<sub>8 </sub>and Y<sub>2</sub> = 6,854 + 0,258 X<sub>2 </sub>– 71,708 X<sub>8</sub>. As for the bigger river shape coefficient (X<sub>8</sub>) so the smaller water discharge average. Hence, each reduction of one river shape coefficient unit will affect water discharge in the amount of 71,708 m<sup>3</sup>/sec<sup>-1</sup>. It can be concluded that significant predictor factor on sedimentation and water discharge are shrubs and river shape coefficient.</p> - Ramlan, Abdul Rahman, - Faisal, Muhammad Sutrisno ##submission.copyrightStatement## Tue, 18 Jun 2019 00:00:00 +0000 Chemical on pleurotusostreatus <p style="text-align: justify;">Oyster mushroom (Pleurotusostreatus) is a fungus that is much-loved by the people. In addition to deliciousness, oyster mushrooms are also very beneficial for health. High nutritional content with a variety of essential amino acids contained therein, oyster mushrooms also contain other compounds that are important for the medical aspects. The more days of oyster mushrooms increasingly interested in the community, this is apparently a result of the impact of increasing public awareness of the benefits and nutritional value of oyster mushrooms. In nature, Oyster mushroom grows only in certain seasons in limited quantities so that the oyster mushroom has good prospects to be cultivated. Mushrooms Lampung is a business that is engaged in the cultivation of oyster mushrooms. The oyster mushroom is grown on the media can be sawdust packed in plastic bags. In the oyster mushroom cultivation activities include preparation of tools and materials, raw material preparation, mixing media, composting, pasteurization, inoculation, incubation, growth and maintenance, harvesting, post-harvest, and marketing. The pasteurization process using oyster mushrooms media banker and a vessel of water.</p> I Putu Arya Kresna Surya ##submission.copyrightStatement## Tue, 18 Jun 2019 00:00:00 +0000 Chemical contents of hydroponic plants <p style="text-align: justify;">The world is increasingly sophisticated with technologies that help humans in the move, even in terms of compliance with food, but it is still in line with the development of technology that is the growing amount of human birth, so the lack of area for fulfillment in terms of planting of food crops, but the land is mostly reserved residential land, and even more we see this village, which is clearing land to grow crops other than basic foodstuffs, but only to enrich themselves. How do we as human beings who still want to meet the food needs facing arable land diminishing modern era is farming no longer have to use the soil of various methods of planting can be used for those who want to pursue her, one of which is farming hydroponic, hydroponics itself is a means farming without soil media when faced with the problems faced in the world in terms of food production, hydroponic gardening system offers a promising solution. In poor countries where soil or climate inhospitable to agriculture, hydroponics offers a means to grow crops with ease. also in areas where the soil has lost its nutrients or fertile land is hard to come by, hydroponics can be an ideal alternative to farming.</p> George Steven ##submission.copyrightStatement## Tue, 25 Jun 2019 00:00:00 +0000 Is good craft matter increasing ingka quality? <p style="text-align: justify;">The purpose of this paper to describe the material on such crafts ingka ingka definition, types ingka, advantages and disadvantages ingka usage, application usage ingka, and the last goal of the use ingka. In addition, I also have a very large goal is to introduce this ingka craft to the crowd that grew ingka users and that child domestic work do not lose competitiveness with foreign products so that local entrepreneurs to develop business in the world market. From my explanation I can conclude that the craft ingka his function was not inferior to foreign products may ingka is superior in its application because it can be used in all activities and more practical in use.</p> Gede Pena Asmawan ##submission.copyrightStatement## Tue, 25 Jun 2019 00:00:00 +0000 Brain system influences on teaching-learning process <p style="text-align: justify;">This research shows how the brain system influences the teaching-learning process and the stimuli, that must has applied in the classroom to generate significant learning in the students, the methodology used was the bibliographic review in which some criteria have referenced. The contributions of authors, the inductive and deductive since the criteria of the cited authors have analyzed, the objective of the work was to demonstrate the incidence of the correct functioning of the brain in the educational process.</p> Tatiana Moncerrate Celorio Sánchez, María Elena Moya Martínez ##submission.copyrightStatement## Fri, 05 Jul 2019 00:00:00 +0000