scholarly journals EVALUATION OF RTH IN REGIONAL SPATIAL PLAN WITH NDVI IN KENDARI CITY

2021 ◽  
Vol 10 (1) ◽  
pp. 53
Author(s):  
Septianto Aldiansyah
Keyword(s):  
Carbon Dioxide ◽  
Urban Areas ◽  
Minimum Standard ◽  
Descriptive Research ◽  
Current Availability ◽  
Quantitative Descriptive ◽  
Carbon Dioxide Co2 ◽  
Over Time ◽  
Spatial Plan

Kendari City is the capital of Southeast Sulawesi Province with a population of 345,110 people. The number of residents can trigger a narrowing of RTH (RTH) due to meeting the need for land over time. RTH in urban areas ideally is 30% of the total area with 20% public RTH and 10% private RTH. This study aims for RTH based on the comparison of the area of the RTH Regional Spatial Plan (RTRW) and the actual RTH, the population, the ability to produce oxygen (O2) and absorption of carbon dioxide (CO2) in the actual RTH. This research uses quantitative descriptive research in evaluating RTH. The results showed that public RTH in the RTRW still lacked 6.93% so that it was still necessary to review the RTRW to meet these needs. The current RTH is also still less than the minimum standard of RTH in Kendari City of 7.01% in public RTH. If it is accumulated, the current availability of RTH still does not meet the minimum standard of RTH in Kendari City. The availability of oxygen (O2) and absorption of carbon dioxide (CO2) in Kendari City can still meet the needs of residents in Kendari City.

An Experimental Study of Nonequilibrium Carbon Dioxide/Oil Interactions

SPE Journal ◽  
2018 ◽  
Vol 23 (05) ◽  
pp. 1768-1783 ◽  
Author(s):  
Mahmood Reza Yassin ◽  
Ali Habibi ◽  
Ashkan Zolfaghari ◽  
Sara Eghbali ◽  
Hassan Dehghanpour
Keyword(s):  
Carbon Dioxide ◽  
Experimental Study ◽  
Natural Convection ◽  
Visual Cell ◽  
Bulk Oil ◽  
High Pressure High Temperature ◽  
Light Oil ◽  
Condensing Flows ◽  
Carbon Dioxide Co2 ◽  
Over Time

Summary In this study, we use a custom-designed visual cell to investigate nonequilibrium carbon dioxide (CO2)/oil interactions under high-pressure/high-temperature conditions. We visualize the CO2/oil interface and measure the visual-cell pressure over time. We perform five sets of visualization tests. The first three tests aim at investigating interactions of gaseous (g), liquid (l), and supercritical (sc) CO2 with a Montney (MTN) oil sample. In the fourth test, to visualize the interactions in the bulk oil phase, we replace the opaque MTN oil with a translucent Duvernay (DUV) light oil (LO). Finally, we conduct an N2(sc)/oil test to compare the results with those of CO2(sc)/oil test. We also compare the results of nonequilibrium CO2/oil interactions with those obtained from conventional pressure/volume/temperature (PVT) tests. Results of the first three tests show that oil immediately expands upon injection of CO2 into the visual cell. CO2(sc) leads to the maximum oil expansion followed by CO2(l) and CO2(g). Furthermore, the rate of oil expansion in the CO2(sc)/oil test is higher than that in CO2(l)/oil and CO2(g)/oil tests. We also observe extracting and condensing flows at the CO2(l)/oil and CO2(sc)/oil interfaces. Moreover, we observe density-driven fingers inside the LO phase because of the local increase in the density of LO. The results of PVT tests show that the density of the CO2/oil mixture is higher than that of the CO2-free oil, explaining the density-driven natural convection during CO2(sc) injection into the visual cell. We do not observe either extracting/condensing flows or density-driven mixing for the N2(sc)/oil test, explaining the low expansion of oil in this test. The results suggest that the combination of density-driven natural convection and extracting/condensing flows enhances CO2(sc) dissolution into the oil phase, leading to fast oil expansion after CO2(sc) injection into the visual cell.

Plasma Decomposition of Carbon Dioxide: Simulations and Experiments

2019 ◽  
Author(s):  
Kamau Wright ◽  
Robert Galvez
Keyword(s):  
Carbon Dioxide ◽  
Co2 Concentration ◽  
Plasma Discharges ◽  
Electrical Parameters ◽  
Plasma System ◽  
Process Gas ◽  
Plasma Decomposition ◽  
Carbon Dioxide Co2 ◽  
Co2 Decomposition ◽  
Over Time

Abstract Simulations and experiments are conducted to model, simulate, test and demonstrate the effect of plasma discharges on decomposition of carbon dioxide (CO2). A pin-to-plane discharge is employed in gas samples containing CO2. A high voltage plasma system is used which was previously shown to be able to decrease CO2 concentration in gas samples. The discharge is modeled and described, including monitoring electrical parameters such as current and voltage. The present study investigated plasma decomposition of carbon dioxide experimentally, and through simulation. A plasma micro-discharge was utilized to better understand plasma-CO2 interactions. Enhancements are suggested to help increase the efficiency and yield of the plasma-CO2 decomposition process. Gas samples are analyzed over time using a CO2 meter.

scholarly journals Diurnal and Seasonal Variations of Carbon Dioxide (CO2) Concentration in Urban, Suburban, and Rural Areas around Tokyo

Atmosphere ◽  
2018 ◽  
Vol 9 (10) ◽  
pp. 367 ◽  
Author(s):  
Ryoichi Imasu ◽  
Yuka Tanabe
Keyword(s):  
Carbon Dioxide ◽  
Seasonal Variations ◽  
Rural Areas ◽  
Urban Areas ◽  
Local Governments ◽  
Inversion Layer ◽  
Co2 Concentration ◽  
Early Spring ◽  
Hourly Data ◽  
Carbon Dioxide Co2

Site environments and instrumental characteristics of carbon dioxide (CO2) measurements operated by local governments in the Kanto Plain, the center of which is Tokyo, were summarized for this study. The observation sites were classified into environments of three types: urban, suburban, and woodland. Based on a few decades of accumulated hourly data, the diurnal and seasonal variations of CO2 concentrations were analyzed as a composite of anomalies from annual means recorded for each site. In urban areas, the highest concentrations appear before midnight in winter. The second peak corresponds to the morning rush hour and the strengthening of the inversion layer. Suburban areas can be characterized as having the highest concentration before dawn and the lowest concentration during the daytime in summer in association with the activation of respiration and photosynthesis of vegetation. In these areas, concentration peaks also appear during the morning rush hour. Woodland areas show background features, with the highest concentration in early spring, which are higher than the global background by about 5 ppmv.

scholarly journals Revealing Urban Carbon Dioxide (CO2) Emission Characteristics and Influencing Mechanisms from the Perspective of Commuting

2019 ◽  
Vol 11 (2) ◽  
pp. 385 ◽  
Author(s):  
Huihui Wang ◽  
Weihua Zeng
Keyword(s):  
Carbon Dioxide ◽  
Co2 Emissions ◽  
Urban Areas ◽  
Co2 Emission ◽  
Urban Transport ◽  
Emission Characteristics ◽  
Factors Affecting ◽  
Ring Road ◽  
Increasing Trend ◽  
Carbon Dioxide Co2

Commuting to and from work is one of the most important and regular routines using urban transport, being a major source for an increase in transport-related carbon dioxide (CO2) emissions. In this study, we explore the characteristics of CO2 emissions from commuter travel in Beijing from different perspectives. A bottom-up approach from a macro perspective is used to analyze recent changing trends of carbon emissions due to commuter travel modes in Beijing, and to identify the main sources of carbon emission increases that affect transportation. To identify CO2 emission characteristics and influencing mechanisms in Beijing, the proportion of commuting modes, commuting distance, and commuting-related CO2 emissions by Ring Roads was analyzed. The commuting-related CO2 emission model, based on Tobit models from the microscopic perspective, was constructed to explore the main factors affecting CO2 emissions of individuals/households. Results show that CO2 emissions due to commuting in Beijing in recent years has presented an increasing trend. In 2014, the amount of CO2 emissions from commuters had already reached the level of 553.68 × 104 t, with CO2 emissions generated by car trips accounting for 75–80% of emissions. Average individual/household commuting-related CO2 emissions on the Ring Road inside the main urban areas of Beijing shows a gradual increasing trend, with the growth trends between the 3rd–5th Ring Road being the largest. Household locations separated by Ring Roads and the occupation type of residents are important factors affecting CO2 emissions. Commuters with access to a car, those having a higher income, and those located in the outer regions of the main urban areas produce more CO2 emissions. To reduce the increasing trend of CO2 emissions in Beijing, it is important that the government accelerates the development of public transport, industry, and residential facilities along the outskirts of the city, along the Ring Road, and along the radix road.

scholarly journals Diurnal and Seasonal Variations of Carbon Dioxide (CO2) Concentration in Urban, Suburban and Rural Areas around Tokyo-City

2018 ◽  
Author(s):  
Ryoichi Imasu ◽  
Yuka Tanabe
Keyword(s):  
Carbon Dioxide ◽  
Seasonal Variations ◽  
Rural Areas ◽  
Urban Areas ◽  
Local Governments ◽  
Inversion Layer ◽  
Early Spring ◽  
Hourly Data ◽  
Annual Means ◽  
Carbon Dioxide Co2

Site environments and instrumental characteristics of carbon dioxide (CO2) measurements operated by local governments in the Kanto Plain, the center of which is Tokyo were summarized for this study. The observation sites were classified into environments of three types: urban, suburban, and woodland. Based on a few decades of accumulated hourly data, the diurnal and seasonal variations of CO2 concentrations were analyzed as a composite of anomalies from annual means recorded for each site. In urban areas, the highest concentrations appear before midnight in winter. The second peak corresponds to the morning rush hour and strengthening of the inversion layer. Suburban areas can be characterized as having the highest concentration before dawn and the lowest concentration during the daytime in summer in association with the activation of respiration and photosynthesis of vegetation. In these areas, concentration peaks also appear during the morning rush hour. Woodland areas show background features, with the highest concentration in early spring: higher than the global background by about 5 ppmv.

The Influence of Capital Structure, Growth, Company Size to Profitability and Company Value of Manufacture Firms Listed in Indonesia Stock Exchange

2019 ◽  
Vol 1 (3) ◽  
pp. 66-78
Author(s):  
Bernon Sampe Tondok ◽  
Cepi Pahlevi ◽  
Andi Aswan
Keyword(s):  
Capital Structure ◽  
Firm Size ◽  
Positive Impact ◽  
Stock Exchange ◽  
Company Size ◽  
Manufacturing Companies ◽  
Descriptive Research ◽  
Company Value ◽  
Quantitative Descriptive ◽  
Company Growth

This study examines the effect of capital structure, company growth, company size on profitability and company value the cases of manufacturing companies listed on the Indonesia Stock Exchange. This research is quantitative descriptive research using path analysis. Classical assumption evaluations are conducted comprising of normality, linearity, autocorrelation, multicollinearity, and heteroscedasticity test. The sample is 33 manufacturing companies listed on the Indonesia Stock Exchange from period 2013 – 2017. The results of the study found that there was a positive impact of capital structure, company growth, firm size on profitability and value of manufacturing companies.

STRUKTUR MODAL DAN UKURAN PERUSAHAAN TERHADAP NILAI PERUSAHAAN DENGAN PROFITABILITAS SEBAGAI VARIABEL INTERVENING. (STUDI KASUS PADA PERUSAHAAN MANUFAKTUR SEKTOR INDUSTRI BARANG KONSUMSI YANG TERDAFTAR DI BEI PERIODE 2016-2018).

2020 ◽  
Vol 4 (02) ◽  
Author(s):  
Anindiya Mustika Gunarwati ◽  
Siti Maryam ◽  
Sudarwati Sudarwati
Keyword(s):  
Capital Structure ◽  
Firm Size ◽  
Firm Value ◽  
Stock Exchange ◽  
Sampling Technique ◽  
Company Size ◽  
Manufacturing Companies ◽  
Descriptive Research ◽  
Company Value ◽  
Quantitative Descriptive

The purpose of this study was to determine the effect of Capital Structure and Firm Size on Firm Value with Profitability as Intervening Variables. (Case Study on Manufacturing Companies in the Consumer Goods Industry Sector which are listed on the Indonesia Stock Exchange for the 2016-2018 Period). This research uses quantitative descriptive research type. Sample 27 companies using Purposive sampling technique. The analysis method uses path analysis with SPSS software version 21.Based on the test result min this study that the variable capital structure and company size have a positive and significant effect on profitability. Capital structure has no effect on firm value, firm size and profitability affect company value, and profitability is able to mediate the effect of capital structure and firm size on firm value. Keywords: capital structure, company size, profitability and firm value.

Analisis Kinerja Keuangan Bank Aceh Setelah Konversi Periode 2016-2018 Berdasarkan Peraturan Otoritas Jasa Keuangan Nomor 8/POJK.03/2014

2019 ◽  
Vol 4 (1) ◽  
pp. 43
Author(s):  
Hanifa Assofia
Keyword(s):  
Corporate Governance ◽  
Financial Performance ◽  
Islamic Law ◽  
Financial Statements ◽  
Risk Profile ◽  
Bank Capital ◽  
Collection Method ◽  
Descriptive Research ◽  
Good Corporate Governance ◽  
Quantitative Descriptive

<p>This research aims to find out how Bank Aceh's financial performance after conversion in terms of earnings and capital. The type of research used is quantitative descriptive research. The data collection method used is the documentation method based on the data in the form of quarterly financial statements for the 2016-2018 period published. The method of data analysis in this study is by using the RGEC method (Risk Profile, Good Corporate Governance, Earning and Capital). The results of the study show that Bank Aceh's financial performance in terms of profitability ranks 2, with the definition that profitability is adequate, profit exceeds the target and supports the growth of bank capital. Bank Aceh's decision to convert to sharia as a whole was a very appropriate decision because it was able to show good performance, besides that it also supported the Aceh Government in carrying out its programs to enforce Islamic law. Bank Aceh's financial performance in terms of capital also ranks 2, with the definition that banks have adequate capital quality and adequacy relative to their risk profile, which is accompanied by strong capital management in accordance with the characteristics, scale of business and the complexity of the bank's business.</p>

INTENSITAS ASUPAN GIZI DALAM MENGEMBANGKAN KESEHATAN ANAK USIA 5-6 TAHUN DI TK UMMI ERNI DESA PEMATANG JOHAR

2019 ◽  
Vol 7 (2) ◽  
Author(s):  
Reka Indriani ◽  
Mesiono Mesiono ◽  
Sapri Sapri
Keyword(s):  
Rapid Development ◽  
Pure Water ◽  
Student Parents ◽  
Interview Method ◽  
Descriptive Research ◽  
Children Nutrition ◽  
Children Health ◽  
Class B ◽  
Quantitative Descriptive ◽  
The Right

<p><em>When children are in a process of growth and rapid development, parents and young people should pay atantion to the health and health of children so that the children can grow and develop according to their age.The purpose of this research is to identify: (1). The children nutrition 5-6 years old, (2). The children health development 5-6 years old, (3). The alternative to protect children health. This research is a quantitative descriptive research. The participants of this research which are include the principal, teacher, and the student parents at class B who is 5-6 years old. In process of collecting the data the researcher used interview method, observation, and documentation. From the research we can conclude 1).Nutrition or food that often given to the children is just four healthy five perfect foods, 2).The children in TK Ummi are the children who have healtiness, 3). The alternative that can be commited to protect the children health is do the practice, make the children common to throw the rubbish in the right place,  check the children nail, stock the pure water, set many dustbins and make a common to wash their hand before eating.</em></p>

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