Zobrazeno 1 - 10
of 71
pro vyhledávání: '"Erwin Riyanto"'
Autor:
Wahyu Hidayat, David P. Sahara, Sri Widiyantoro, Suharsono Suharsono, Erwin Riyanto, Mochamad Nukman, Ridho Kresna Wattimena, Sari Melati, Eric Sitorus, Turgod Nainggolan, I. Putu Raditya Ambara Putra
Publikováno v:
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, Vol 10, Iss 1, Pp 1-18 (2024)
Abstract Caving activity results in an increased induced seismicity which should be monitored to avoid massive and uncontrolled rock damage. This research was conducted at the Deep Mill Level Zone (DMLZ) underground mine, the deepest underground mine
Externí odkaz:
https://doaj.org/article/7d36cb121b344ac9af6eea8cc2b669bb
Publikováno v:
Journal of Ecological Engineering, Vol 23, Iss 7, Pp 29-41 (2022)
Changing coastal zones in Indonesia, such as coral reefs, seagrass, and mangroves, have an impact on tropical ecosystems. Excessive exploitation and sedimentation, in particular, have threatened the mangrove at Segara Anakan Cilacap. In order to eval
Externí odkaz:
https://doaj.org/article/94697e76f53a4c989aa53436720f645b
Publikováno v:
Journal of Ecological Engineering, Vol 22, Iss 3, Pp 135-142 (2021)
Phytoplankton blooms are a problem that often occurs in estuarine and coastal ecosystems. Changes in phytoplankton community species composition, diversity, biomass, and distribution were caused by conditions of seasonal and temporal variation. The i
Externí odkaz:
https://doaj.org/article/c7eedd68c35346a9b564c22a32cd3ba5
Autor:
Sari Melati, Ridho Kresna Wattimena, David Prambudi Sahara, Syafrizal, Ganda Marihot Simangunsong, Wahyu Hidayat, Erwin Riyanto, Raden Roro Shinta Felisia
Publikováno v:
Energies, Vol 16, Iss 1, p 9 (2022)
The block caving mining method has become increasingly popular in the last two decades. Meanwhile, Indonesia has several potential ore bodies which have not yet determined suitable mining methods. The references to block caving mining projects worldw
Externí odkaz:
https://doaj.org/article/2bb5764563d440228c73534b7e330d04
Autor:
Wahyu Hidayat, David P. Sahara, Sri Widiyantoro, Suharsono Suharsono, Ridho Kresna Wattimena, Sari Melati, I Putu Raditya Ambara Putra, Septian Prahastudhi, Eric Sitorus, Erwin Riyanto
Publikováno v:
Applied Sciences, Vol 12, Iss 14, p 7265 (2022)
In the case of mining in an inclined intrusion using the block caving method, the highest stress is usually concentrated in the seismogenic and abutment zones, especially in the front of the sloping area. In an inclined intrusion of more than 40°, t
Externí odkaz:
https://doaj.org/article/6a51005ba272475d8a0543a5a003fb40
Publikováno v:
Jurnal Aplikasi Bisnis dan Manajemen, Vol 7, Iss 3, Pp 535-535 (2021)
The copper price in copper mining companies is an essential aspect in terms of profit, revenue, production targets, and hedging. This research aims to determine an alternative of copper price modeling and its causality relationship to Freeport McMoRa
Externí odkaz:
https://doaj.org/article/a640962ee0a641399a2e442cab38d33a
Publikováno v:
Majalah Ilmiah Biologi Biosfera: A Scientific Journal, Vol 34, Iss 1, Pp 15-21 (2017)
The high changes of Serayu River land use is resulting the high of load particle sedimentation into the body of water. Turbidity will accumulate in the downstream or estuaries which would have an impact on biota, especially plankton as primary produc
Externí odkaz:
https://doaj.org/article/388963d8326f45e69eb627d4a5a1303c
Publikováno v:
Scripta Biologica, Vol 5, Iss 1 (2018)
Coral reefs, the habitat of tens of thousands of marine species, are an ecosystem with the highest biodiversity. Several threats, however, have impaired coral reefs. One having a potentially catastrophic effect is the increasing temperature of the oc
Externí odkaz:
https://doaj.org/article/c3810172a8844484be28c5b0ce875ae4
Publikováno v:
Majalah Ilmiah Biologi Biosfera: A Scientific Journal, Vol 32, Iss 1, Pp 19-28 (2015)
Mangroves are coastal ecosystems that have a very large role for humans and ecosystems in the vicinity. Mangrove condition in Indonesia, including in Segara Chicks Cilacap experiencing enormous pressure resulting in damage to the mangrove ecosystem.
Externí odkaz:
https://doaj.org/article/1c62b6317ad24cff8937d881cb749e7c
Publikováno v:
Scripta Biologica, Vol 4, Iss 2 (2017)
Over-exploitation and land-use conversion into aquaculture ponds have damaged the mangrove ecosystem. The extreme environment condition resulting in sedimentation led to the reduction of lagoon area and eventually of mangrove vegetation community. It
Externí odkaz:
https://doaj.org/article/3b857777459f4c28a91cd25e3810ae9a