scholarly journals The effect of «pumping wells» procedure on the flow rate of extraction wells

2020 ◽  
Vol 2 (313) ◽  
pp. 14-18
Author(s):  
Kh. A. Yusupov ◽  
◽  
E.U. Omarbekov ◽  
Keyword(s):  
Flow Rate ◽  
Production Costs ◽  
Uranium Deposits ◽  
Labor Costs ◽  
Populated Area ◽  
Southwestern Part ◽  
Pumping Wells ◽  
Statistical Level ◽  
Rate Of Extraction

Study of application of «pumping wells» when mining of uranium deposits by in-situ leaching (ISL) to the mine "Karatau" under conditions of high pressure of groundwater character was performed. The operating «Karatau» mine is located in a deserted, inaccessible, sparsely populated area in the southwestern part of the Shu-Sarysuy depression in the territory of the Suzaksky district, Turkestan oblast. The «Karatau» deposit differs from other deposits in that self-pouring of geotechnological wells with a statistical level of +20 m is observed at all sites. The use of traditional technology for such deposit leads to excessive material and labor costs. Therefore, the technology of "pumping wells" is proposed. It is shown that the use of "pumping wells" procedure leads to achieving a uniform flow rate of extraction wells, reduction in the purchase of the cable production costs for the purchase of submersible pumps and wells in the end cap.

scholarly journals Influence of the "pumping wells" technology on the indicators of in situ leaching of uranium

2021 ◽  
Vol 317 (2) ◽  
pp. 30-36
Author(s):  
S. B. Aliev ◽  
◽  
Omarbekov Ye.U. ◽  
◽  
Keyword(s):  
High Pressure ◽  
Experimental Research ◽  
Production Cost ◽  
Uranium Deposits ◽  
Ph Values ◽  
Pumping Wells ◽  
Experimental Works ◽  
The Cost

This paper presents the results of experimental research applications "pumping wells" when the mining of uranium deposits by the method of In-Situ Leach Mining ISL in mine "Karatau". Analyzed the experience results of uranium deposits development in the conditions of high-pressure nature of groundwater. The experimental works have been conducted using proposed “pumping wells” technology. The implementation of the proposed "pumping well" technology did not affect the Me and pH values in comparison with the actual technology, but it did reduce the production cost. It is proved that by using the proposed technology and schemes in conditions of high-pressure nature of groundwater reduces the cost of procurement of cables, significantly reducing the cost of acquisition of submersible pumps, savings in the end cap.

SELISIH BIAYA PRODUKSI SEBAGAI ALAT PENGENDALIAN MANAJEMEN PT INDO PUSAKA BERAU

2019 ◽  
Vol 3 (02) ◽  
pp. 397
Author(s):  
SAFITRI NURHIDAYATI ◽  
RIZKI AMELYA SYAM
Keyword(s):  
Raw Materials ◽  
Field Research ◽  
Analytical Tool ◽  
Production Costs ◽  
Raw Material ◽  
Labor Costs ◽  
Material Costs ◽  
Library Research ◽  
The Difference ◽  
The Cost

This study aims to analyze whether the difference that occurs in the cost of raw materials, direct labor, and factory overhead costs between the standard costs and the actual costs in PLTU LATI is a difference that is favorable or unfavorable. Data collection techniques with field research and library research. The analytical tool used is the analysis of the difference in raw material costs, the difference in direct labor costs and the difference in factory overhead costs. The hypothesis in this study is that the difference allegedly occurs in the cost of raw materials, direct labor costs, and factory overhead costs at PT Indo Pusaka Berau Tanjung Redeb is a favorable difference. The results showed that the difference in the cost of producing MWh electricity at PT Indo Pusaka Berau Tanjung Redeb in 2018, namely the difference in the price of raw material costs Rp. 548,029.80, - is favorable, the difference in quantity of raw materials is Rp. 957,216,602, - is (favorable) , the difference in direct labor costs Rp 2,602,642,084, - is (unfavorable), and the difference in factory overhead costs Rp 8,807,051,422, - is (favorable) This shows that the difference in the overall production cost budget is favorable or profitable. This beneficial difference shows that the company is really able to reduce production costs optimally in 2018.  

scholarly journals In situ measurement and closed-loop control for powder supply processes

2021 ◽  
Author(s):  
Philipp Peter Breese ◽  
Tobias Hauser ◽  
Daniel Regulin ◽  
Stefan Seebauer ◽  
Christian Rupprecht
Keyword(s):  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Closed Loop ◽  
In Situ Measurement ◽  
Closed Loop Control ◽  
Loop Control ◽  
Powder Feeder ◽  
Powder Mass

AbstractThe powder mass flow rate is one of the main parameters regarding the geometrical precision of built components in the additive manufacturing process of laser metal deposition. However, its accuracy, constancy, and repeatability over the course of the running process is not given. Reasons among others are the performance of the powder conveyors, the complex nature of the powder behavior, and the resulting issues with existing closed-loop control approaches. Additionally, a direct in situ measurement of the powder mass flow rate is only possible with intrusive methods. This publication introduces a novel approach to measure the current powder mass flow rate at a frequency of 125 Hz. The volumetric powder flow evaluation given by a simple optical sensor concept was transferred to a mass flow rate through mathematical dependencies. They were found experimentally for a nickel-based powder (Inconel 625) and are valid for a wide range of mass flow rates. With this, the dynamic behavior of a vibration powder feeder was investigated and a memory effect dependent on previous powder feeder speeds was discovered. Next, a closed-loop control with the received sensor signal was implemented. The concept as a whole gives a repeatable and accurate powder mass flow rate while being universally retrofittable and applicable. In a final step, the improved dynamic and steady performance of the powder mass flow rate with closed-loop control was validated. It showed a reduction of mean relative errors for step responses of up to 81% compared to the uncontrolled cases.

scholarly journals Agro-Economic Evaluation of Alternative Crop Management Options for Teff Production in Midland Agro-Ecology, Ethiopia

Agriculture ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 298
Author(s):  
Fekremariam Asargew Mihretie ◽  
Atsushi Tsunekawa ◽  
Nigussie Haregeweyn ◽  
Enyew Adgo ◽  
Mitsuru Tsubo ◽  
...  
Keyword(s):  
Management Practices ◽  
Smallholder Farmers ◽  
Early Stage ◽  
Crop Management ◽  
Production Costs ◽  
Agronomic Performance ◽  
Labor Costs ◽  
Management Options ◽  
Area Index ◽  
Weed Population

Teff is an important crop for smallholder farmers in Ethiopia. Improved crop management practices are needed to increase teff productivity and decrease production costs. Here, we used a split–split plot design to evaluate the impacts of different tillage, sowing, and soil compaction practices, and their combinations, on agronomic performance, weed population, lodging, and cost in teff production at the Aba Gerima watershed in northwestern Ethiopia in 2018–2020. Reduced tillage (RT) improved soil moisture, resulting in increased agronomic performance and decreased production costs compared with conventional tillage (CT); however, the weed population was substantially larger with RT than with CT. Row planting (RP) reduced seed cost and lodging but increased sowing and weeding costs compared with broadcast planting (BP). Plant population and leaf area index were substantially greater with BP than with RP during early-stage growth, but this reversed during late-stage growth. Despite labor costs being significantly greater with (WC) compaction than without (NC), little to no differences were observed in the weed population or in agronomic performance. Partial cost–benefit analysis revealed that RT–RP–WC followed by RT–RP–NC was the most economical treatment combination, suggesting that RT–RP–NC could be a labor-effective means of increasing teff production by smallholder farms in Ethiopia.

scholarly journals Flow fields associated with in situ mineral leaching

1994 ◽  
Vol 36 (2) ◽  
pp. 133-151 ◽  
Author(s):  
Lawrence K. Forbes ◽  
Anthony M. Watts ◽  
Graeme A. Chandler
Keyword(s):  
Simple Model ◽  
Free Boundary ◽  
Numerical Method ◽  
Flow Rate ◽  
Recovery Rate ◽  
Flow Fields ◽  
Vertical Line ◽  
Rate Limiting ◽  
Mineral Leaching

AbstractA simple model for underground mineral leaching is considered, in which liquor is injected into the rock at one point and retrieved from the rock by being pumped out at another point. In its passage through the rock, the liquor dissolves some of the ore of interest, and this is therefore recovered in solution. When the injection and recovery points lie on a vertical line, the region of wetted rock forms an axi-symmetric plume, the surface of which is a free boundary. We present an accurate numerical method for the solution of the problem, and obtain estimates for the maximum possible recovery rate of the liquor, as a fraction of the injected flow rate. Limiting cases are discussed, and other geometries for fluid recovery are considered.

scholarly journals In situ measurement of micro flow rate using near infrared absorption method

2018 ◽  
Vol 26 (13) ◽  
pp. 17078 ◽  
Author(s):  
Seok Hwan Lee ◽  
Joohyun Lee ◽  
Sejong Chun ◽  
Woong Kang
Keyword(s):  
Flow Rate ◽  
Infrared Absorption ◽  
Near Infrared ◽  
In Situ Measurement ◽  
Absorption Method ◽  
Micro Flow

scholarly journals Advances in Polyhydroxyalkanoate Nanocarriers for Effective Drug Delivery: An Overview and Challenges

Nanomaterials ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 175
Author(s):  
Priyanka Prakash ◽  
Wing-Hin Lee ◽  
Ching-Yee Loo ◽  
Hau Seung Jeremy Wong ◽  
Thaigarajan Parumasivam
Keyword(s):  
Drug Delivery ◽  
Targeted Delivery ◽  
In Situ Polymerization ◽  
Drug Loading ◽  
Controlled Drug Release ◽  
Production Costs ◽  
Natural Polymers ◽  
High Production ◽  
The Many

Polyhydroxyalkanoates (PHAs) are natural polymers produced under specific conditions by certain organisms, primarily bacteria, as a source of energy. These up-and-coming bioplastics are an undeniable asset in enhancing the effectiveness of drug delivery systems, which demand characteristics like non-immunogenicity, a sustained and controlled drug release, targeted delivery, as well as a high drug loading capacity. Given their biocompatibility, biodegradability, modifiability, and compatibility with hydrophobic drugs, PHAs often provide a superior alternative to free drug therapy or treatments using other polymeric nanocarriers. The many formulation methods of existing PHA nanocarriers, such as emulsion solvent evaporation, nanoprecipitation, dialysis, and in situ polymerization, are explained in this review. Due to their flexibility that allows for a vessel tailormade to its intended application, PHA nanocarriers have found their place in diverse therapy options like anticancer and anti-infective treatments, which are among the applications of PHA nanocarriers discussed in this article. Despite their many positive attributes, the advancement of PHA nanocarriers to clinical trials of drug delivery applications has been stunted due to the polymers’ natural hydrophobicity, controversial production materials, and high production costs, among others. These challenges are explored in this review, alongside their existing solutions and alternatives.

scholarly journals Rancangan sistem pengukuran kinerja untuk penentuan key performance indicator dengan metode Balance scorecard

2020 ◽  
Vol 12 (2) ◽  
pp. 248
Author(s):  
Lucky Setiawan ◽  
Yuliani Fauziah
Keyword(s):  
Performance Measurement ◽  
Balanced Scorecard ◽  
Evaluation Method ◽  
Corporate Strategy ◽  
Performance Indicator ◽  
Production Costs ◽  
Success Factor ◽  
Key Performance Indicator ◽  
Labor Costs ◽  
The Balanced Scorecard

This research adopts the Vision and Mission of a textile company headquartered in Tangerang. This company produces producing polo shirts, golf shirts, track suits, sweat shirts, and pants using materials such as single jersey, pique, lace in cotton, polyester, and others. The company's vision and mission can represent other textile companies that have the same processes and products. The characteristics of textile companies that have processes with human skill factors become critical points that are difficult to replace with robot technology. This has an impact on the needs of a large number of human resources in the industry. The increase in labor costs which always increases every year has a very significant impact on production costs. Thus, expansion is one of the critical factors to be used as a top management strategy in determining the current KPI items. The Balanced Scorecard is a performance evaluation method that can meet these expectations. The design of company performance measurement in this study begins with the translation of the company's vision and mission, secondly, making a proposed corporate strategy using the PQCDSME approach (profit, quality, Cost, Delivery, Service, Moral, Environment). Third, calcify the company's strategy into the perspective of the balanced scorecard. Fourth, the decision making process to determine KPI items using the brainstorming method. Fifth, determining the critical success factor and key performance indicator. Other factors are also compared between the achievement of the previous year as an illustration of determining a target. So the target given will be in accordance with the SMART rules (speciefic, measurable, achievable, realistic and timely). The results are obtained with 4 criteria (financial, consumer, internal business processes, learning and growth). This performance measurement produced 19 key performance indicators, consisting of 6 financial perspective indicators, 1 customer perspective indicator, 7 internal business process perspective indicators, and 5 growth and learning perspective indicators.

scholarly journals CALCULATION OF PRODUCTION COST IN UD. USAHA BARU WITH FULL COSTING METHOD

2019 ◽  
Vol 4 (1) ◽  
pp. 28-42
Author(s):  
Suprianto Suprianto ◽  
Bina Andari ◽  
Yely Sulistyawati
Keyword(s):  
Production Cost ◽  
Raw Materials ◽  
Analysis Data ◽  
Production Costs ◽  
Raw Material ◽  
Labor Costs ◽  
Material Costs ◽  
Other Information ◽  
Cost Of Production ◽  
The Cost

This study aims to evaluate the calculation of cost of production. The accuracy of the calculation of cost of production is influenced by the suitability in the accumulation and calculation of production costs which includes the cost of raw materials, direct labor costs and other costs (factory overhead costs). This research was conducted at UKM UD. Usaha Baru which aims to determine the calculation of cost of production at UD. Usaha Baru and to find out whether the calculation of cost of production is in accordance with the full costing method. The technique (method) of data analysis used in this study is quantitative analysis. Data collection techniques use interview techniques directly to obtain information from the number of units of monthly production, raw material costs, direct labor costs, and factory overhead costs, as well as other information relating to the calculation of cost of production. Based on the evaluation results for the calculation of raw material costs and labor costs are in accordance with the full costing method. However, the calculation of factory overhead costs is not in accordance with the full costing method because there are costs that have not been included in the calculation of production costs.

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