IOP Conference Series Earth and Environmental Science
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Updated Friday, 03 December 2021

2021 ◽  
Vol 889 (1) ◽  
pp. 012026
Author(s):  
Venkata Kanaka Srivani Maddala ◽  
Shubham Sharma ◽  
Jasgurpreet Chohan ◽  
Raman Kumar ◽  
Sandeep Singh

Abstract Many methods are used to extract the ores causing huge threat to environment. Mining practices lead to un sustainability and the problems created by it were not yet controlled. So adoption of Green mining technologies helps to attain sustainable development and control the problems to maximum extent. The main objective of green mining is to start mining process and end it to ensure that adopting green mining practices lead to sustainability. Green mining also reduces greenhouse gases prone to effect conserve minerals, using energy more efficiently etc. According to Mission 2016 plan many green mining techniques were adopted and increased focus on research and became more popular so every industry focusing on environmental friendly technologies. Some of the major mining nations like Canada, Australia, South Africa etc adopted sustainable development viewed on not only environment but also other dimensions like local stake holder engagement, socio economic development in mining project areas and transparency in communication with stake holders. Sustainable strategies of mining includes measurement, monitoring mainly to improve the performance of environment and ensure that the mining operations are perfect or not. This paper reviews impacts of mining in various countries and Green mining solutions adopted over the world. It also discussed about Green supply chain management and the barriers of it and given the suggestions to control these barriers.


2021 ◽  
Vol 913 (1) ◽  
pp. 012057
Author(s):  
I A P Kirana ◽  
N S H Kurniawan ◽  
A S Abidin ◽  
A Nikmatullah ◽  
A L Sunarwidhi ◽  
...  

Abstract Batu Layar coastal area provides an optimum environment for the diversity of coastal biota in the form of corals, crustaceans, molluscs, echinoderms and macroalgae. Macroalgae are plantlike marine biota that are large in size. Based on taxonomy, macroalgae are included in the Thallophyta group because their bodies are thallus. The purpose of this study is to evaluate the abundance of macroalgae in Batu Layar Coastal areas to be used as primary data for further research. This research is located at Batu Layar Coast using the Transect method. The number of transects used is 4 transects with the length of each transect is 50 m. On each transect, 5 stations were taken. Samples of each different macroalgae species at each station were taken for the purpose of morphological identification. Macroalgae identification is presented in the form of descriptive analysis and graphs in the presentation of diversity, evenness, and abundance. The results of the identification of macroalgae in research at Batu Layar Coast as a whole found that there were 24 species of macroalgae consisting of 11 species of Chlorophyta, 8 species of Rhodophyta and 5 species of Phaeophyta. Dominant species on the shoreline are Chlorophyta, in the middle of the transect most of algae are the Phaeophyta and dominant species farthest from the shore are Rhodophyta. The conclusion is the most abundant macroalgae species is Gelidium latifolium from Rhodophyta division with number of abundance is 4.58 individuals/m2.


2021 ◽  
Vol 913 (1) ◽  
pp. 012016
Author(s):  
A Wulansari ◽  
A Purwito ◽  
D Sukma ◽  
TM Ermayanti

Abstract Taro genetic improvement through polyploidy induction is expected to be tolerant to abiotic stress. Several studies have shown that polyploidy plants have a higher adaptability to dry environments. In vitro selection technique for evaluation of plant tolerance to drought stress can be done by applying polyethylene glycol (PEG) as a selection agent. The aim of the research was to investigate the growth response of diploid and tetraploid taro shoot culture to drought stress using PEG. The experiment was conducted using a completely randomized design with two factors. The first factor was the concentration of PEG at 0, 5, 10, 15 and 20%. The second factor was Bentul taro clones which were 1 diploid clone and 2 tetraploid clones (clones 4.6.3 and 5.4.4). PEG was added to liquid MS medium containing 2 mg/l BAP. Observations of growth variables were carried out every week until the six weeks of culture. Fresh and dry weights, mortality percentage and proline content were determined at six weeks of culture. The results showed that the addition of PEG in liquid medium significantly affected the number of leaves, petiole length, number of roots, fresh and dry weights, as well as shoot mortality percentage. Differences in clones significantly affected the number of leaves, fresh and dry weights. The two factors tested (PEG and clones), gave an interaction on the number of leaves, fresh and dry weights. The proline content in all diploid and tetraploid clones showed an increase with increasing PEG concentration. The LC50 value in diploid clones was 9.82%, in tetraploid clones 4.6.3 and 5.4.4 were 14.14 and 15.45%, respectively. The results showed that PEG at 10% and 15% could be used for in vitro selection to drought stress both for diploid and tetraploid taro.


2021 ◽  
Vol 913 (1) ◽  
pp. 012050
Author(s):  
M H Kusuma ◽  
S E Rahim

Abstract PT. PLN (Persero) as one of the State-Owned Enterprises (BUMN) received a mandate from the Indonesian government to provide electricity services. PLN ensures that the availability of electricity supply throughout Indonesia is currently sufficient through a power plant development program of 35 Gigawatt. On the other hand, the condition of the Covid-19 Pandemic during the New Normal period in Indonesia significantly impacted people’s behavior in Indonesia in all respects, especially in accessing public services. To provide solutions related to the high community needs in obtaining services in the electricity sector in the current new normal period, PT. PLN (Persero) has made innovations by providing alternative online service media such as the mobile-based PLN New Mobile Application and has been integrated with other PLN applications such as the Centralized Customer Service Application and the Integrated Complaints and Complaints Application as well as digital payment services. This study measures the effectiveness of the New PLN Mobile Application in improving service and satisfaction for customers in the New Normal era in Tanjung pandan City. Thus, we use four variables often used in electronically assessing service quality, namely Efficiency, Fulfilment, Service Availability, and Privacy. The method used in this study is a quantitative method with a questionnaire approach. The sampling method used is purposive sampling with the criteria of respondents who have used the New PLN Mobile application. The number of samples used was 396 respondents. Based on the analysis of the results of the questionnaire test, observation, and other supporting data, it can conclude that New PLN Mobile Application has been significantly effective because it has fulfilled all the variables mentioned above.


2021 ◽  
Vol 913 (1) ◽  
pp. 012020
Author(s):  
I M Sudantha ◽  
Suwardji ◽  
N L P N Sriwarthini

Abstract The kangkung (Ipomoea aquatica Forsk) is water spinach typical of Lombok Island, Indonesia with a crunchy texture and distinctive taste. It is very easy to be cultivated in the home garden organically in soil media, also to be planted hydroponically and aquaponically. Hydroponic system cultivation is the cultivation of plants by utilizing water without using soil with an emphasis on meeting the nutritional needs of plants. One of the nutrients that has good prospects is the Trichoderma bionutrient which is made from a mixture of bioactivator and biourin. The purpose of this study was to determine the agronomic response of water spinach plants typical of Lombok Island with a hydroponic system treated with Trichoderma bionutrients. The study used an experimental method carried out in a plastic house with a hydroponic system. The study used a completely randomized design with hydroponic nutrition treatment consisting of 6 levels, namely: without bionutrients, with bioactivator bionutrients, with biourin bionutrients, with a mixture of bioactivator and biourin, with AB mix nutrition, with a mixture of Trichoderma bionutrients and Ab mix nutrients. Each treatment was repeated 4 times so that there were 24 experimental units. The results showed that the treatment with a mixture of bionutrients with a mixture of bioactivators and Trichoderma biourin was as good as AB mix nutrition in promoting growth and wet weight of kangkung typical of Lombok Island.


2021 ◽  
Vol 889 (1) ◽  
pp. 012046
Author(s):  
Ashangbam Inaoba Singh ◽  
Kanwarpreet Singh

Abstract Rapid urbanization has dramatically altered land use and land cover (LULC). The focus of this research is on the examination of the last two decades. The research was conducted in the Chandel district of Manipur, India. The LULC of Chandel (encompassing a 3313 km2 geographical area) was mapped using remotely sensed images from LANDSAT4-5, LANDSAT 7 ETM+, and LANDSAT 8 (OLI) to focus on spatial and temporal trends between years 2000 and 2021. The LULC maps with six major classifications viz., Thickly Vegetated Area (TVA), Sparsely Vegetated Area (SVA), Agriculture Area (AA), Population Area (PA), Water Bodies (WB), and Barren Area (BA) of the were generated using supervised classification approach. For the image classification procedure, interactive supervised classification is adopted to calculate the area percentage. The results interpreted that the TVA covers approximately 65% of the total mapped area in year 2002, which has been decreased up to 60% in 2007, 56% in 2011, 55 % in 2017, and 52% in 2021. The populated area also increases significantly in these two decades. The change and increase in the PA has been observed from year 2000 (8%) to 2021 (11%). Water Bodies remain same throughout the study period. Deforestation occurs as a result of the rapid rise of the population and the extension of the territory.


2021 ◽  
Vol 889 (1) ◽  
pp. 012010
Author(s):  
Tarun Sharma ◽  
Sandeep Singh

Abstract In order for the foundation of building to be strong, the soil around it plays a critical role. So, researcher or engineer should have thorough knowledge about the factors affecting behaviour of soil which can be altered by the process of soil stabilisation. This study aims to investigate the applicability of SCBA (Sugarcane Bagasse Ash) to stabilize the clayey soil. Sugar factories produce waste after extraction of sugarcane gets brunt and the ash, hence produced is known as bagasse ash. Soil is treated with partial replacement of cement (3%, 6%, 9% and 12%) and with bagasse ash (2%, 4%, 6%and 8%). A total of 45 specimens were prepared in this study. Later those test specimens were evaluated for compaction properties. The results found after thorough study was that there was increase in the compaction properties with percentage increase in Sugarcane Bagasse Ash up to certain limit.


2021 ◽  
Vol 913 (1) ◽  
pp. 012034
Author(s):  
Wuryantoro ◽  
T Sjah ◽  
I Budastra ◽  
C Ayu ◽  
N L S Supartiningsih ◽  
...  

Abstract West Lombok Regency is one of rice production centers in West Nusa Tenggara. Rice millings operate in the Regency to process raw rice into rice (hulled rice), and become a central point in the rice agro-industry and institution that connects actors in the supply chain, starting from raw rice to producing hulled rice as the main product. The aim of this research is to: (1) analyze supply chain mechanisms related to product flows, information flows and financial flows on rice; (2) analyze added value received by actors in the rice supply chain network; and (3) analyze marketing efficiency of rice in West Lombok Regency. This research uses descriptive methods. Data collection was carried out using surveys to the research locations of the districts of Narmada, Lingsar and Gerung, which all are the centers of rice in West Lombok Regency. There were 30 rice farmer respondents and some institutions or individuals involved in the flow of rice from farmers to end consumers. Data were analyzed by applying the analyses of descriptive, added value, and marketing efficiency. The results showed that in the rice supply chain there have been flows of product, finance, and information, amongst marketing actors or institutions. The added value and profit resulting from processing unhulled rice to hulled rice were IDR 6,100/kg and IDR 5,850/kg, respectively. It was also found that in West Lombok Regency there are three patterns of marketing channels and all of the channels operated efficiently.


2021 ◽  
Vol 913 (1) ◽  
pp. 012099
Author(s):  
C S W Lestari ◽  
G Novientri

Abstract The yeast expression system is widely used to produce functional recombinant proteins in the biopharmaceutical industry, such as vaccine products. The expression system choices using yeast as the host has many advantages. Various vaccines have been produced commercially using yeast expression systems. This review aims to explore the advantages of the yeast expression system in Saccharomyces cerevisiae, Pichia pastoris, and Hansenula polymorpha, which emphasize vaccine products to prevent human infectious diseases. Selection of the appropriate expression system is carried out by identification at the genetic and fermentation levels, taking into account host features, vectors and expression strategies. We also demonstrate the development of a yeast expression system that can produce recombinant proteins, virus-like particles and yeast surface displays as a novel vaccine strategy against infectious diseases. The recombinant protein produced as a vaccine in the yeast system is cost-effective, immunogenic, and safe. In addition, this system has not introduced new microbe variants in nature that will be safe for the environment. Thus, it has the potential to become a commercial product used in vaccination programs to prevent human infectious diseases.


2021 ◽  
Vol 916 (1) ◽  
pp. 012032
Author(s):  
A Fatmawati

Abstract Banjarmasin City is regarded as the capital of South Kalimantan Province, acknowledged as the high-risk area of 2 major issues, such as flood due to sea-level rise, and settlement fire. Banjarmasin is located in tidal marsh zone with elevation of 0.16m below the sea level which relatively leads to annual urban flooding. Floods occur in Banjarmasin in 2021 become one of threats to city resilience. Thus, building city resilience against the unexpected climate change is of importance to create a suistanable and livable city. This study focuses on resilient city of Banjarmasin by utilizing the two different methods of analysis, including: public and SWOT analysis. Public analysis is utilized to assess Banjarmasin City policy of manifestation of city resilience. SWOT analysis is applied to identify various factors systematically in formulating the planning strategy. The results indicated that innovation in handling disaster by the local government towards resilient city has been apparent through several programs of disaster mitigation by collaborating with private sectors or institutions, with aims: to provide maximum public services, to promote climate change awareness to all levels of society, and to handle river issues such as river normalization.


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