scholarly journals Spatial distribution of dominant ions in the groundwater in Banyumudal Groundwater Basin, Central Java, Indonesia

2019 ◽  
Vol 76 ◽  
pp. 02005
Author(s):  
Setyawan Purnama
Keyword(s):  
Spatial Distribution ◽  
Influencing Factor ◽  
Water Source ◽  
Ionic Concentration ◽  
Chemical Characteristics ◽  
Central Java ◽  
Sanitary Condition ◽  
Study Results ◽  
Groundwater Basin ◽  
Stiff Diagram

Groundwater basin is an area with hydrogeological limits where it is happened all of hydrogeological processes. Banyumudal Groundwater Basin is one of groundwater basin with unique characteristic because of receiving water source from surroundings area, that would influence probably to the water quality. This study was conducted to: (1) know the spatial distribution of dominant ions concentration in the groundwater; (2) analyze surroundings factors that influence the spatial distribution of dominant ions in the groundwater. To realize the objectives, it was carried out the removal of groundwater samples in the observational wells that were determined by purposive sampling. The analyzed elements were Ca2+, Mg2+, Na+, K+, SO42-, HCO3-, CO32-, Cl- and Fe2+ . The concentration of the dominant ions was realized in the form of Stiff Diagram and then was plotted in a map, so that it could be known the distribution. To analyze the process of mixing between the groundwater and water from the other sources with different chemical characteristics, it used the Piper Diagram, whereas to analyze the surroundings effects to the ionic concentration, it was conducted the analysis of quantitative descriptive. The study results showed that the groundwater from the northern part of Banyumudal Groundwater Basin has higher concentration of dominant ions compared with the southern ones. Viewed from each ion, the ionic concentration of Ca2+ and HCO3- are higher than other dominant ions and have more varied values, so that the change of chemical characteristics of the groundwater would tend to be determined by the concentration change of them. Type of rocks is the most influencing factor to the concentration of dominant ions in the study area. Nevertheless, the domestic waste has also little effects related to the sanitary condition in around of samples location of the groundwater.

scholarly journals Biodiversity of Rambut Cave Sale Central Java

2021 ◽  
Vol 896 (1) ◽  
pp. 012006
Author(s):  
S Rachmawati ◽  
H H A Matin ◽  
S Suhardono ◽  
P Setyono ◽  
L Kusumaningrum ◽  
...  
Keyword(s):  
Diversity Index ◽  
Karst Area ◽  
Central Java ◽  
Study Results ◽  
Groundwater Basin ◽  
Index Value ◽  
Flora Diversity ◽  
Horseshoe Bats

Abstract Rembang zone karst area stretches from Central Java to Madura Islands. This area is the most significant water or groundwater basin (CAT) area in Rembang Regency, often known as Watuputih Mountains or Karst Area. Watuputih Groundwater Basin is a karst area that is characterized by the formation of several caves. Rambut Cave is one of the caves in Watuputih area located to the east of Watuputih with coordinate’s point −6.8783, 111.5534. There are seven types of flora found in the Rambut Cave, namely Horseshoe Bats, Bent-Wing Bats, Ants, Geckos and Crickets, Forest Grasshoppers, and Snails. While the flora was found, there are six types of Bauhinia scandens, Suweg, Mahogany, Drypetes littoralis, Yellow Palm, and Teak trees. The study results obtained the Flora Diversity Index Value H=0.687, which belongs to the low category, and the value of Fauna Diversity Index H’=1.414, which belongs to the medium category.

Aplikasi metode tahanan jenis dalam studi geologi karst Gua Seropan di Gunung Kidul, Yogyakarta

2017 ◽  
Vol 12 (2) ◽  
pp. 105-116
Author(s):  
Pulung A. Pranantya ◽  
Nurlia Sadikin
Keyword(s):  
Fresh Water ◽  
Ground Surface ◽  
Water Source ◽  
Raw Water ◽  
Limited Information ◽  
Resistivity Method ◽  
Central Java ◽  
Underground River ◽  
Initial Exploration

In terms of geology, most areas in south of the Gunungkidul District in Central Java consist of the Wonosari formation limestone. The land is generally very dry and source of raw water is also difficult to reach. Findings on the existence of underground river in caves, however, indicate the potential amount of water within the area, especially in the eastern part of the Gunungkidul District. Although limited information available, some fishermen have discovered that Seropan cave contains fresh water source. This cave is situated at 65 m below the cliff. Initial exploration, which done using a multichannel resistivity method, confirmed the availability of freshwater in the cave and underground river. The isopach of cave depth is found in ranges of 80 200 m below the ground surface. The water of Seropan cave can be utilized by implementing pipeline or by drilling at the suggested point based on the interpretation results, i.e. 110o2223.6388 EL 8o42.874 SL. [DY1][PP2][DY1]Perbaiki grammarIn terms of geology, most areas in south of Gunungkidul District in Central Java consist of the Wonosari formation limestone. The land is generally very dry and source of raw water is also difficult to reach. Findings on the exixtence of underground river in caves, however, indicate potential amount of water within the area especially in eastern part of Gunungkidul District. Although limited information available, some fishermans has discovered that Seropan cave contain fresh water source. This cave is situated at 65 m below the cliff. Initial exploration, which done using multichannel resistivity method, confirmed the availability of freshwater in the cave and underground river. The iso pach of cave depth is found in ranges of 80 200 m below the ground surface. The water of Seropan cave can be utilized by implementing pipeline or by drilling at the suggested point based on the interpretation results i.e. 110o2223.6388 EL 8o42.874 SL.[PP2]Sudah diperbaiki

Positive parenting, career aspirations, and exploration: A study of third-year urban undergraduate students

2021 ◽  
Vol 4 (1) ◽  
pp. 45
Author(s):  
Dian Ratna Sawitri
Keyword(s):  
Undergraduate Students ◽  
Structural Equation ◽  
Career Aspirations ◽  
Career Exploration ◽  
Positive Parenting ◽  
Equation Modeling ◽  
State University ◽  
Central Java ◽  
Study Results ◽  
Specific Career

Career exploration reflects activities conducted to collect information about oneself and potential occupations to become self-aware and understand the job market. Career exploration guides the realization of career aspirations and is thus crucial for young adults. It helps the youth make appropriate career-relevant decisions. However, it is unknown whether career aspirations mediate the links between positive parenting and career exploration activities undertaken by urban third-year undergraduate students. This study aimed to bridge this gap in the literature, and to this end, a survey was administered to 125 third-year undergraduate students attending a state university in Semarang, Central Java. The Career Exploration Scale, Career Aspirations Scale, Positive Parenting Subscale, and questions on demographic characteristics were employed for data collection. Structural equation modeling demonstrated that career aspirations fully mediated the path between positive parenting and career exploration. The findings of this study underline the importance of career aspirations in translating the effects of positive parenting into specific career exploration activities undertaken by college students. Finally, suggestions based on the study results are offered for third-year undergraduate students, parents, and practitioners.

scholarly journals Analysis of the spatial distribution of dengue cases in the city of Rio de Janeiro, 2011 and 2012

2017 ◽  
Vol 51 ◽  
Author(s):  
Silvia Carvalho ◽  
Mônica De Avelar Figueiredo Mafra Magalhães ◽  
Roberto De Andrade Medronho
Keyword(s):  
Information System ◽  
Spatial Distribution ◽  
Rio De Janeiro ◽  
Influencing Factor ◽  
Kernel Density ◽  
Severe Dengue ◽  
Automatic Process ◽  
Density Estimator ◽  
Macroeconomic Policies ◽  
The City

OBJECTIVE Analyze the spatial distribution of classical dengue and severe dengue cases in the city of Rio de Janeiro. METHODS Exploratory study, considering cases of classical dengue and severe dengue with laboratory confirmation of the infection in the city of Rio de Janeiro during the years 2011/2012. The georeferencing technique was applied for the cases notified in the Notification Increase Information System in the period of 2011 and 2012. For this process, the fields “street” and “number” were used. The ArcGis10 program’s Geocoding tool’s automatic process was performed. The spatial analysis was done through the kernel density estimator. RESULTS Kernel density pointed out hotspots for classic dengue that did not coincide geographically with severe dengue and were in or near favelas. The kernel ratio did not show a notable change in the spatial distribution pattern observed in the kernel density analysis. The georeferencing process showed a loss of 41% of classic dengue registries and 17% of severe dengue registries due to the address in the Notification Increase Information System form. CONCLUSIONS The hotspots near the favelas suggest that the social vulnerability of these localities can be an influencing factor for the occurrence of this aggravation since there is a deficiency of the supply and access to essential goods and services for the population. To reduce this vulnerability, interventions must be related to macroeconomic policies.

scholarly journals SPATIAL DISTRIBUTION OF BRACKISHWATER POND SOIL CHARACTERISTICS IN PEKALONGAN CITY CENTRAL JAVA PROVINCE

2011 ◽  
Vol 6 (1) ◽  
pp. 91
Author(s):  
Andi Indrajaya Asaad ◽  
Akhmad Mustafa
Keyword(s):  
Spatial Distribution ◽  
Soil Depth ◽  
Research Result ◽  
Soil Characteristics ◽  
Kriging Interpolation ◽  
Total N ◽  
Central Java ◽  
Kriging Interpolation Method ◽  
Brackishwater Pond ◽  
Central Java Province

Spatial distribution of brackishwater pond soil has a vital role in the system of bioenvironment including brackishwater pond environment. This research was aimed to determine the spatial distribution of brackishwater pond soil characteristics in Pekalongan City, Central Java Province. A total of 59 sampling points each with two different soil depth samplings were determined by simple random method. A total of 21 soil characteristics were measured in the field and analyzed further in the laboratory. Geostatistic with Kriging Interpolation method in the ArcGIS 9.3 software were used to depict the distribution of the data across the landscape. Furthermore, the spatial distribution was presented by using ALOS AVNIR-2 image. Research result indicates that in general, pond soil in Pekalongan City can be classified as soil with high variability or relatively heterogenic with the value of variation coefficient more than 36%. Soil characteristics which have similar pattern of spatial distribution are acid sulfate soil and soil nutrient content. High value of pH, organic matter, and total-N of soil, and on the other hand, low value of PO4 were generally found in the pond area of Krapyak Lor Village, while in Pekalongan City, it was found high clayish soil content but relatively homogenous. It is recommended that pond management must be based on soil characteristics which are different from one area to another. The soil characteristics itself can be drawn and assessed through spatial distribution.

scholarly journals Keterkaitan Efisiensi Kredit Usaha Rakyat (KUR) dengan Topografi Wilayah di Kabupaten Pati, Provinsi Jawa Tengah

2019 ◽  
Vol 3 (2) ◽  
pp. 117-130
Author(s):  
Farida Farida ◽  
Nur Wahyuni ◽  
Ida Zulfida
Keyword(s):  
Spatial Distribution ◽  
Data Envelopment Analysis ◽  
Economic Activity ◽  
Research Method ◽  
Secondary Data ◽  
Data Envelopment ◽  
Economic Activities ◽  
Central Java ◽  
Exogenous Factors ◽  
Descriptive Qualitative

Exogenous factors such as topography of the region are often overlooked in determining the pattern of economic activity. In fact, the geographical surface contributes to the spatial distribution of varied economic activities. The purpose of this study was to see the linkage between the efficiency of the disbursement of People’s Business Credit (KUR) program and the topography of the region in Pati Regency-Central Java. The research method is descriptive qualitative by overlaying the efficiency level of 35 KUR channeling banks with polygon maps of each subdistrict in Pati regency. Data on the efficiency level of unit banks are secondary data of each bank unit which has been calculated with Data Envelopment Analysis (DEA) application. Is it dicovered that unit banks are very inefficient at topographies bordered with arid limestone mountains or along rivers that often overflows. As a result, economic activity is not optimal and the disbursement of KUR is not efficient at the area. On the contrary, at topographies in the lowlands, the trade, agriculture, and fisheries sectors are advanced, population is large,  economic activities are fast, thus encourage efficient credit disbursement.

scholarly journals Spatial distribution of spruce trees in the nature reserve 'Jankove bare' on mt. Kopaonik

2009 ◽  
pp. 191-204
Author(s):  
Branko Stajic ◽  
Milivoj Vuckovic ◽  
Marko Smiljanic
Keyword(s):  
Spatial Distribution ◽  
Tree Growth ◽  
Environmental Conditions ◽  
National Park ◽  
Nature Reserve ◽  
Distance Methods ◽  
Study Results

The methodology and applicability of the study of spatial distribution of trees in Serbian forestry have been insufficiently reported and presented. This paper, based on mathematical?statistical principles, analyses the method of spatial distribution of spruce trees in the Nature Reserve 'Jankove Bare' in the National Park 'Kopaonik'. The following methods in the group of distance methods were applied: Kotar's method (1993), T2?method, and the index of distance dispersion (Johnson, Zimmer, 1985). The study results in a pure uneven-aged spruce stand based on all three methods showed that spruce trees are randomly distributed over the stand area. Therefore, environmental conditions in the study stand can be regarded as homogeneous and equally suitable for tree growth, and there are no significant interactions between the trees, which could cause a higher competition between the trees for nutrients, water, etc.

scholarly journals The effect of logistics management, supply chain facilities and competitive storage costs on the use of warehouse financing of agricultural products

2021 ◽  
Vol 9 (2) ◽  
pp. 457-464 ◽  
Author(s):  
Paramita Prananingtyas ◽  
Siti Zulaekhah
Keyword(s):  
Regression Analysis ◽  
Supply Chain ◽  
Random Sampling ◽  
Sampling Method ◽  
Linear Regression Analysis ◽  
Agricultural Products ◽  
Logistics Management ◽  
Central Java ◽  
Logistic Management ◽  
Study Results

This study seeks to analyze the effect of logistics management carried out by warehouse operators, the facilities and access provided to support storage, and the competitiveness of storage costs on the use of warehouse financing by suppliers in Central Java, Indonesia. The sampling method was purposive random sampling. The numbers of respondents involved in this study were 120 suppliers and farmers producing first-rate agricultural products and who are users of warehouse receipts in the Central Java region. By using linear regression analysis with assistance, the study results found that the variables of logistic management, facilities and supply chain access as well as competitive storage costs have positive and significant effects on the use of warehousing financing by suppliers and farmers who use public warehousing. This result confirms that the more precisely warehousing is managed, the higher the level of trust of users involved in the logistics business and supply chain of agricultural products to use additional services in the form of warehouse receipts to support the sustainability of agricultural businesses.

scholarly journals Chemical Characteristics and Quality Assessment of Groundwater of Exploited Aquifers in Beijiao Water Source of Yinchuan, China: A Case Study for Drinking, Irrigation, and Industrial Purposes

2015 ◽  
Vol 2015 ◽  
pp. 1-14 ◽  
Author(s):  
Hao Wu ◽  
Jie Chen ◽  
Hui Qian ◽  
Xuedi Zhang
Keyword(s):  
Quality Assessment ◽  
Water Samples ◽  
Coupled Model ◽  
Simple Algorithm ◽  
Water Source ◽  
Human Consumption ◽  
Chemical Characteristics ◽  
Control Mechanisms ◽  
Confined Water ◽  
Phreatic Water

This work is aimed at reviewing the chemical characteristics and evaluation of the quality of exploited groundwater in Beijiao water source of Yinchuan. A coupled model based on osculating value method (OVM) and entropy is proposed to determine the suitability for drinking. Besides, phreatic water and confined water are evaluated for irrigation purposes and industrial purposes, respectively. Piper diagram shows different hydrochemical characteristics between aquifers, which can be explained by the control mechanisms revealed by Gibbs diagram. Chloroalkaline indices and ions relationship indicate that reverse ion exchanges occur in different aquifers. Based on the osculating values, 96% of the phreatic water samples are fit for human consumption, and the confined water can provide quality drinking water. Most of the phreatic water samples have no sodium hazard but have magnesium hazard. All the confined water samples generate mild foaming reaction, and 93% of them are mildly corrosive for boilers. An assessment by OVM without entropy is calculated. Similar results to the coupled model demonstrate that pure OVM is also objective and valid. The simple algorithm turns multicriteria decision-making problems into an integrated index which is just as useful to water quality assessment.

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