scholarly journals PERANCANGAN MESIN PENGAYAK DAUN KERING BAHAN BAKU PUPUK ORGANIK DI CV. GLOBAL BUMI PUTRA DENGAN PENDEKATAN METODE PAHL AND BEITZ

JUMINTEN ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 85-96
Author(s):  
Yuan Ridho Hadi Putra ◽  
Akmal Suryadi
Keyword(s):  
Organic Fertilizer ◽  
Electrical Energy ◽  
Advanced Technology ◽  
Test Results ◽  
Ac Motor ◽  
Work Done ◽  
Iron Material ◽  
Product Forms ◽  
The City ◽  
Product Concepts

In the current condition of more advanced technology, all activities will be easy with the emergence of various new tools that have more usability than the basic capabilities of the previous tools.  The more sophisticated the tool, the lighter the work done during the production process.  CV. Global Bumi Putra, one of the organic fertilizer factories in the city of Jember, is still carrying out the sieving process in a traditional way.  To increase the yield of dry leaf organic fertilizer, a dry leaf sieving machine was made.  The method used to design this machine is the Pahl and Beitz method.  There are 4 design stages in this method, namely planning and explaining tasks, designing product concepts, designing product forms, and the final phase of detailed design.  From the results of the design using the Pahl and Beitz method, the design of the dry leaf sieving machine with the machine frame uses iron material, in the form of a cube for the outside.  AC motor drive with electrical energy sources, transmission using belts and pulleys.  Minimum machine design with size P = 2 m, W = 1.5 m, T = 2 m.  The sieve on the machine is tubular, the size of the sieve net is 4 cm.  The average yield of 2 sacks of chopped leaves using a manual sieve was 5.36 kg in 10.31 minutes.  Meanwhile, from the test results of the sieving machine that was made, the average sieve yield of 2 chopped leaf sacks was 5.92 kg in 03.49 minutes.

Study of mechanical properties of indium-based solder alloys for cryogenic applications

2022 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Madhuri Chandrashekhar Deshpande ◽  
Rajesh Chaudhari ◽  
Ramesh Narayanan ◽  
Harishwar Kale
Keyword(s):  
Mechanical Properties ◽  
Solder Alloy ◽  
Charpy Impact ◽  
Charpy Impact Test ◽  
Test Results ◽  
Solder Alloys ◽  
Content Type ◽  
Electron Microscope Analysis ◽  
American Society ◽  
Work Done

Purpose This study aims to develop indium-based solders for cryogenic applications. Design/methodology/approach This paper aims to investigate mechanical properties of indium-based solder formulations at room temperature (RT, 27 °C) as well as at cryogenic temperature (CT, −196 °C) and subsequently to find out their suitability for cryogenic applications. After developing these alloys, mechanical properties such as tensile and impact strength were measured as per American Society for Testing and Materials standards at RT and at CT. Charpy impact test results were used to find out ductile to brittle transition temperature (DBTT). These properties were also evaluated after thermal cycling (TC) to find out effect of thermal stress. Scanning electron microscope analysis was performed to understand fracture mechanism. Results indicate that amongst the solder alloys that have been studied in this work, In-34Bi solder alloy has the best all-round mechanical properties at RT, CT and after TC. Findings It can be concluded from the results of this work that In-34Bi solder alloy has best all-round mechanical properties at RT, CT and after TC and therefore is the most appropriate solder alloy amongst the alloys that have been studied in this work for cryogenic applications Originality/value DBTT of indium-based solder alloys has not been found out in the work done so far in this category. DBTT is necessary to decide safe working temperature range of the alloy. Also the effect of TC, which is one of the major reasons of failure, was not studied so far. These parameters are studied in this work.

scholarly journals Co-generation: Increasing energy efficiency in Bosnia and Herzegovina

2007 ◽  
Vol 11 (3) ◽  
pp. 85-100
Author(s):  
Alija Lekic ◽  
Semsudin Hadziefendic
Keyword(s):  
Bosnia And Herzegovina ◽  
Low Voltage ◽  
Boiler House ◽  
District Heating ◽  
Electrical Energy ◽  
Heating System ◽  
District Heating System ◽  
The Government ◽  
Electrical Distribution Network ◽  
The City

The main sources for power generation in Bosnia and Herzegovina are domestic coals, mainly lignite and brown coals, which are relatively characterized with a high content of sulphur (3-5%) and incombustibles (?30%). From the 70?s, use of this type of fuels was not allowed in the city of Sarajevo due to very unfavorable emissions to the atmosphere, during the heating period, and since then Sarajevo has been supplied with natural gas. All the heating installations in the city were reconstructed and adapted. The district heating system Toplane Sarajevo is supplied with electrical energy from the Public electrical distribution network (Elektrodistribucija Sarajevo) at low voltage (0.4 kV). The boiler-house Dobrinja III-2 (KDIII-2), from the district heating system of Sarajevo Suburb Dobrinja, which was not in use after the war 1992-1995, had a lot of advantages for the reconstruction into the co-generation plant. The Government of Canton Sarajevo financially supported this proposal. An analysis of co-generations for the district heating system and a selection of most appropriate co-generation systems were made. In the proposed conceptual design, the co-generation KDIII-2 was located in the existing boiler-house KDIII-2, connected with the heating system in Dobrinja. The operating costs of production of electricity and heat were evaluated in the study and compared with the costs of conventional energy supply to the district heating system. This analysis resulted in economic indicators, which showed that this investment was economically viable, and it also determined the payback period of the investment. In this paper results of the mentioned study and an overview of co-generation in Bosnia and Herzegovina are presented.

scholarly journals Methodology for Assessing the Transport Accessibility of Capital Objects in a Megacity Based on Geoinformation Data

2022 ◽  
Vol 12 (4) ◽  
pp. 400-415
Author(s):  
S. V. Mkhitaryan ◽  
Zh. B. Musatova ◽  
T. V. Murtuzalieva ◽  
G. S. Timokhina ◽  
I. P. Shirochenskaya
Keyword(s):  
Transport Infrastructure ◽  
Future Research ◽  
Infrastructure Development ◽  
Test Results ◽  
Transport Accessibility ◽  
Methodological Approaches ◽  
Secondary Information ◽  
Quantitative Indicators ◽  
The City ◽  
Housing Estates

Purpose: to present the author's methodology and the test results for calculating integral indicators of transport accessibility on the basis of weighted normalized private indicators for three housing estates in Moscow.Methods: the study is based on the application of methods for collecting factual material, its processing, systematic, comparative historical and structural-functional analysis, which were supplemented by multivariate analysis of secondary information using content analysis of existing methods for calculating indicators of transport accessibility of capital objects. The results and conclusions of the research are based on the use of the author's methodology for calculating integral indicators of transport accessibility based on weighted normalized private indicators for three housing estates in Moscow. The analysis of a possible set of criteria for assessing transport accessibility of housing estates in Moscow metropolis was carried out on the basis of the use of a geographic information system database GIS NextGIS QGIS.Results: a review of methodological approaches to the calculation of objective quantitative indicators characterizing the transport accessibility of capital objects is carried out; the author's methodology for calculating the integral indicators of the transport accessibility of residential complexes in Moscow is presented and tested on the basis of weighted normalized private criteria / indicators. The use of the authors’ methodology for calculating integral indicators of transport accessibility based on weighted normalized private criteria / indicators made it possible to calculate the values of indicators of transport accessibility for three housing estates in Moscow, calculate an integrated score for a set of transport accessibility criteria for each housing estate, to give a comparative quantitative assessment of their transport accessibility, to conduct a rating of housing estates in terms of their transport accessibility.Conclusions and Relevance: the presented results of approbation of the author's methodology for calculating the integral indicators of transport accessibility for housing estates in Moscow allow to conduct a comparative and dynamic analysis of housing estates (or larger units) transport accessibility. The results of such an analysis can be applied in order to develop programs for transport infrastructure development of the megacity as a whole, its certain districts and city parts, as well as to assess such programs efciency. The authors see the directions for future research in the defnition and calculation of indicators based on the city dwellers perception of the transport accessibility

scholarly journals The effectiveness of a mini photovoltaic cell by using light LED bulbs as a source of photon energy

2021 ◽  
Vol 926 (1) ◽  
pp. 012090
Author(s):  
Mustofa ◽  
Iskandar ◽  
Muchsin ◽  
S Suluh ◽  
T M Kamaludin
Keyword(s):  
Energy Source ◽  
Output Power ◽  
Electrical Energy ◽  
Photovoltaic Cell ◽  
Fresnel Lens ◽  
Test Results ◽  
Light Spectrum ◽  
Pv Cell ◽  
Fresnel Lenses ◽  
Cell Module

Abstract Muxindo’s LED bulb is one of the brands that are widely used by Indonesian people as lighting in the home. This study aims to look at the effectiveness of the light spectrum of the 10, 15 and 20 Watt LED power bulbs as an energy source to generate electrical energy in monocrystalline mini photovoltaic (PV) cell module. The light spectrum is compared with and without the Fresnel lens before being transmitted to the PV surface. The test results show that the PV output power is much better with a Fresnel lens (4.06> 1.67) mW. The efficiency of PV with lens displays slightly different figures, 3.77% at 15 Watt bulb power, while without Fresnel lenses, PV efficiency is 4.86% with a 20 Watt bulb. Need further research, for example, with Philips brand LED bulbs

scholarly journals Development of the Electromagnetic Regenerative Shock Absorber as an Energy Harvesting Tool for Vehicles

2019 ◽  
Vol 1 (3) ◽  
pp. 31-42
Author(s):  
Wanda Afnison ◽  
Erzeddin Alwi ◽  
Hasan Maksum ◽  
Bahrul Amin ◽  
M Yasep Setiawan
Keyword(s):  
Energy Harvesting ◽  
Shock Absorber ◽  
Electrical Energy ◽  
Test Results ◽  
Vibration Energy Harvesting ◽  
Energy Mechanism ◽  
Left And Right ◽  
Type Magnet ◽  
Regenerative Shock Absorber ◽  
Further Development

This research is a development of previous research entitled "Designing Regenerative Shock Absorber as a Vibration Energy Harvesting Tool on Vehicles" in the PUPT scheme funded by PNBP UNP 2017. In this study optimization of design oriented to energy generation was carried out while also paying attention to aspects driving comfort that might change due to the installation of a harvesting energy mechanism. One aspect of the change occurred in the type of magnet used, namely a ring type magnet with a type of neodymium material.From the test results obtained by changing the value of the efficiency of the shock absorber after the ERSA mechanism is installed by 2%, this condition also has an impact on the dissimilarity of the attenuation value obtained by 2% for the front-rear (left) and (right) wheels. In terms of generation voltage obtained the maximum generation voltage obtained is 25,600 mV. Based on the data obtained, it needs further development ERSA, especially in the aspect of the electromagnetic mechanism to optimize the generation of electrical energy.

scholarly journals Children's Values, Social Support, Mother's Roles, and Psychosocial Stimulation in Boys and Girls

2021 ◽  
Vol 6 (1) ◽  
pp. 20-36
Author(s):  
Dwi Hastuti ◽  
Lia Shafira Arlianty ◽  
Megawati Simanjuntak
Keyword(s):  
Social Support ◽  
Psychosocial Development ◽  
Economic Value ◽  
Simple Random Sampling ◽  
Cross Sectional Study ◽  
Information Support ◽  
Test Results ◽  
Cross Sectional ◽  
Psychosocial Stimulation ◽  
The City

Psychosocial development is a developmental stage that every child will pass. This study aimed to analyze the influence of family and child characteristics, child value, social support, mother's involvement in psychosocial stimulation in boys and girls. The research design that was used in this study was a cross-sectional study. Site selection was chosen purposively, namely in the city of Medan. Research locations were in two villages, namely Kota Maksum, Medan Labuhan Subdistrict and Kota Besar Village, Medan Area District. The sample pulling technique uses simple random sampling with a sample of mothers who have children aged 2-3 years and come from a complete family of 150 people. Respondents interviewed with the questionnaire were mothers. Correlation test results showed a significant positive relationship between maternal age, children's values, dimensions of psychological value and dimensions of economic value, social support, dimensions of information support and dimensions of reward support, and mothers' role in care with psychosocial stimulation.

scholarly journals RANCANGBANGUN RANGKAIAN INVERTER SPWM UNIPOLAR 1 FASA DENGAN PENGATURAN FREKUENSI OUTPUT

2021 ◽  
Vol 9 (1) ◽  
pp. 46-49
Author(s):  
Fathoni ◽  
Agus Pracoyo ◽  
Totok Winarno ◽  
Rizal Sabillah
Keyword(s):  
Output Voltage ◽  
Test Results ◽  
Motor Speed ◽  
Output Frequency ◽  
Ac Motor ◽  
Power Part ◽  
The Difference ◽  
The Right ◽  
Frequency Variations

Changing the dc sgnal to ac signal is done for te purpose of load regulations, such as the ac motor speed, heater and lamp. Inverter work is done by ac rectification first and then converted again to a 1 phase ac signal. The ac output signal is a sinosoidal PWM (SPWM) type of unipolar 220 volts from the input 24 volt dc voltage. Unipolar SPWM signal generation is done by a microcontroller with programming. The number of counts (resolutions) of the SPWM signal and the period are set from the amount in the register, can be set to 8 bits or other constants. The power part of the SPWM inverter is the N channel MOSFET bridge circuit H with IR2110 solid state driver. Step transformer as a load while step-up the inverter output voltage. Determination of the output frequency is set through a rotary encoder that can be adjusted up (increment) or down (decrement). There are 5 frequency variations, namely 30, 40, 50, 60 and 70 Hz. To get the inverter efficiency, the type of MOSFET used is chosen to have the type that has a low RDS (on) value and the right driving pulse, according to the switch configuration. Measurement of the output frequency is done by reading the image on the osciloscope. The observations show a frequency value that is almost the same as the constant. The test results show the difference in output voltage which is reduced at a 30 watt load.

scholarly journals The Method of Cluster Drilling in the Western Ural as the Beginning of the Technical and Economic Revolution in the World Drilling

TECHNOLOGOS ◽  
2020 ◽  
pp. 47-57
Author(s):  
Neroslov Alexey
Keyword(s):  
Large Scale ◽  
High Efficiency ◽  
Oil Industry ◽  
Advanced Technology ◽  
Innovative Technology ◽  
Drilling Process ◽  
Directional Drilling ◽  
North Caucasus ◽  
The World ◽  
The City

In 1943, at the height of the Great Patriotic War, the new revolutionary drilling technique with high efficiency was used in Krasnokamsk oilfield of Molotov (Perm) Oblast for the first time in the world – the cluster turbodrilling method. The development of oil industry in Prikamye in the 1940s was associated with certain complications. The main deposits of the Krasnokasmk oilfield discovered before the war turned out to be located due to a number of reasons within the area of industrial and residential construction of the city of Krasnokamsk and under the Kama river and the Paltinskoye swamp close to the city. Conventional drilling methods could not be used for their development. The way out was to use the method of directional drilling that was little known at that moment. The development of the innovative technology in Krasnokamsk oilfield in 1942 was largely due to the involvement of the specialists of the Experimental Turbodrilling Bureau evacuated from Baku. Directional drilling which involved the deviation of the bottom hole (the ultimate lowest point of the well) from the wellhead (the initial uppermost location) by several hundred metres opened up broad opportunities for developing hard-to-recover oil deposits while significantly accelerating and ensuring cost savings of the drilling process. The directional drilling served as the basis for the development in Prikamye of an advanced technology of cluster drilling when several directional wells with different azimuths were drilled from a small well pad. In 1943–1944, cluster drilling was tested and successfully used in Krasnokamsk oilfield. The cluster drilling comprised an entire range of innovative solutions including the movement of assembled drilling rigs without dismantling power equipment. Also, it resulted in the reduction of total labour costs, scope of construction and assembly works, costs of building oilfield roads, power lines and pipelines, and transportation costs. People’s Commissariat of Oil Industry of the USSR initiated a large-scale rollout of the advanced method of cluster drilling in the largest oil-producing regions of the Soviet Union – Azerbaijan and the North Caucasus, and the area of the “second Baku” – Bashkiria, Tatary, and Kuybyshev oblast. The transition to the advanced and cost-saving technology of cluster drilling laid the foundation for the technical and economic revolution of the world drilling practices.

Study on Chlorpyrifos Residues Degradation by Mutagenic Bacteria DX1 in Soil

2013 ◽  
Vol 726-731 ◽  
pp. 3992-3995
Author(s):  
Ming Fen Niu ◽  
Jian Wei ◽  
Chen Liang
Keyword(s):  
Degradation Rate ◽  
Ph Value ◽  
Orthogonal Experiment ◽  
Organic Fertilizer ◽  
Test Results ◽  
Soil Environment ◽  
Soil Fertilization ◽  
Spss Software ◽  
The Impact ◽  
Different Levels

In this study, it was carried out by designing PH, soil fertilization content, humidity and mutagenic bacteria DX1 inoculation concentration of orthogonal experiment to research chlorpyrifos degradation rate in the soil, which was affected by mutagenic bacteria DX1 in the soil environment. SPSS software was taken visualized analysis and variance analysis to evaluate the impact of different levels of the test results, to determine the factors which had significant impact on the experimental results. It showed that the best environmental factors of chlorpyrifos degradation rate in soil were the pH 7, organic fertilizer content 5mg/kg, the soil moisture 70%, inoculation volume 50ml/kg. The pH value and inoculation volume had a significant impact on chlorpyrifos degradation rate in soil; the soil humidity had little effect and the organic fertilizer content had almost no effect.

Conclusion

2018 ◽  
pp. 268-280
Author(s):  
Kory Olson
Keyword(s):  
World War Ii ◽  
Capital City ◽  
World War ◽  
German Occupation ◽  
Napoleon Iii ◽  
Housing Shortages ◽  
Paris Region ◽  
To Come ◽  
Work Done ◽  
The City

The tumultuous nineteenth century brought Parisian led regime change in 1830, 1848 and in many respects 1870. Although Napoleon III and Haussmann had hoped their Paris works would tame the capital city as they constructed uniform boulevards and transformed the crowded medieval centre into a bourgeois space. Throughout the twentieth century, the movement of people and goods throughout the Paris region remained a challenge and official maps showed how to address that issue. The German occupation during World War II effectively ended any hope of Prost’s 1934 plan to come to fruition. However, the damages afflicted on the city during combat allowed leaders to refocus their attention on the city. The pre-war work done by the Service géographique, Jaussely, and Prost allow future urban officials, such as Lopez and Bernard Lafay, to address problems such as increased traffic, parking, housing shortages, decentralization, and increased sprawl. The end of the war shifted national priorities away from the capital but by the 1950s, economic growth meant that urban planners needed to focus yet again on ameliorating development in greater Paris.

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