International journal of chemical & material sciences https://sloap.org/journal/index.php/ijcms <p style="text-align: justify;"><strong>IJCMS&nbsp;</strong>is published in English and it is open to authors around the world regardless of the nationality. The frequency of publication is two issues per year, i.e. January &amp; July.<br>ISSN 2632-9468</p> SLOAP en-US International journal of chemical & material sciences 2632-9468 <p style="text-align: left;">All articles in the SLOAP Journals are published under the terms of the &nbsp;Creative Commons Attribution-ShareAlike 4.0 International License&nbsp;(CC BY-SA) which allows authors and users to copy, distribute, transmit and adapt the article.&nbsp;The &nbsp;Creative Commons Attribution-ShareAlike 4.0 International License&nbsp;of an open-access article, as long as the author is properly attributed.&nbsp;Copyright on any research article published by SLOAP is retained by the author(s).&nbsp;Authors grant to the SLOAP right to publish the article, to be cited as its original publisher in case of reuse, and to distribute it in all forms and media.&nbsp;Copyright and source must be acknowledged and a link must be made to the article's DOI.&nbsp;</p> Land use and environment physical condition on sedimentation and water discharge of lindu lake watershed https://sloap.org/journal/index.php/ijcms/article/view/71 <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## http://creativecommons.org/licenses/by-sa/4.0 2019-06-18 2019-06-18 2 1 1 7 10.31295/ijcms.v2n1.71 Chemical on pleurotusostreatus https://sloap.org/journal/index.php/ijcms/article/view/72 <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## http://creativecommons.org/licenses/by-sa/4.0 2019-06-18 2019-06-18 2 1 8 13 10.31295/ijcms.v2n1.72 Chemical contents of hydroponic plants https://sloap.org/journal/index.php/ijcms/article/view/83 <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## http://creativecommons.org/licenses/by-sa/4.0 2019-06-25 2019-06-25 2 1 14 17 10.31295/ijcms.v2n1.83 Is good craft matter increasing ingka quality? https://sloap.org/journal/index.php/ijcms/article/view/84 <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## http://creativecommons.org/licenses/by-sa/4.0 2019-06-25 2019-06-25 2 1 18 23 10.31295/ijcms.v2n1.84