scholarly journals Analisis Produksi Energi dari Inverter pada Grid-connected PLTS 1 MWp di Desa Kayubihi Kabupaten Bangli

2016 ◽  
Vol 16 (1) ◽  
pp. 131 ◽  
Author(s):  
A. A. Ngurah Bagus Budi Nathawibawa ◽  
I Nyoman Satya Kumara ◽  
Wayan Gede Ariastina
Keyword(s):  
Energy Production ◽  
Average Energy ◽  
The Other ◽  
Know How ◽  
Ac Power ◽  
Optimum Energy ◽  
Plant Uses ◽  
Research Goal ◽  
Grid Connected Inverter ◽  
Array Position

Inverter is a very important component of a grid-connected PV plant related its function to convert photovoltaic DC to be AC power. Inverter constructed from many components to support its operation so that inverter is the most complex component in a PV plant systems. 1 MWp Grid-connected Kayubihi PV Plant uses 50 units 20 kW grid-connected inverter. This research goal is to know how inverter performance also the string array position impact to energy production. Energy production analysis at Kayubihi PV Plant by mapping the energy production percentage each inverter, then choose an inverter with the highest energy production percentage as a reference to measure the other inverters performance. The analysis considers string array location which connected to the inverter too and also based on the condition of PV location. Obtained that the highest energy production is inverter 44-E5 at 17.827 kWh and the lowest is inverter 8-D3 at 8.898 kWh. The highest average energy production is inverter 44-E5 at 72,47 kWh/day, and the lowest is inverter 11-C5 at 39,26 kWh/day. The conclusion is inverter energy production is ? 75 % based on each string array optimum energy with inverter 29-B9 has the highest ? 75 % energy production percentage. Inverter merupakan komponen yang sangat penting dalam sebuah PLTS yang terhubung dengan jaringan listrik karena fungsinya untuk mengubah daya DC modul surya menjadi daya AC. Inverter dibangun dari berbagai macam komponen untuk menunjang operasinya, sehingga inverter adalah komponen paling kompleks di dalam sistem PLTS. Grid-connected PLTS 1 MWp Kayubihi menggunakan 50 unit inverter dengan kapasitas masing-masing 20 kW. Penelitian ini bertujuan untuk mengetahui bagaimana unjuk kerja inverter serta pengaruh posisi string array  terhadap produksi energi. Analisis produksi energi di PLTS Kayubihi dilakukan dengan pemetaan persentase produksi energi dari setiap inverter, kemudian memilih inverter dengan persentase produksi energi tertinggi sebagai acuan untuk menilai unjuk kerja dari 49 inverter yang lain. Analisis juga memperhatikan letak string array yang terhubung dengan inverter serta berdasarkan kondisi lingkungan di lokasi PLTS. Diperoleh bahwa produksi energi tertinggi dihasilkan oleh inverter 44-E5 sebesar 17.827 kWh dan terendah adalah inverter 8-D3 sebesar 8.898 kWh. Inverter dengan produksi energi rata-rata  tertinggi adalah inverter 44-E5 sebesar 72,47 kWh/hari dan terendah adalah inverter 11-C5 sebesar 39,26 kWh/hari. Dapat disimpulkan bahwa produksi energi seluruh inverter di PLTS Kayubihi sudah ?75% berdasarkan energi optimum string array masing-masing, dengan inverter 29-B9 memiliki persentase produksi energi ? 75 % tertinggi. DOI: 10.24843/MITE.1601.18

scholarly journals Analisis Energi Aktual Purata per Minggu yang Dihasilkan Solar Panel 20 WP di Kota Bekasi

MESIN ◽  
2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Jamal M Afiff ◽  
Gusti Firdaus Alamhudi
Keyword(s):  
Energy Production ◽  
Alternative Energy ◽  
Average Power ◽  
Average Energy ◽  
Solar Panel ◽  
Tropical Country ◽  
Real Condition ◽  
Know How ◽  
System A ◽  
Power And Energy

<p><em>Solar panel is gaining popularity as one of the source of alternative energy especially in tropical country. Solar panel users need to know how much energy is produced and what components it takes before starting to make a solar panel system. A comparison between ideal energy and actual energy will help to evaluate the performance of solar panel to show how much energy it will produce under a real condition. In this research, a 20 WP solar panel was used and the data collection was performed from 9 May 2018–9 July 2018 in Bekasi City. Collected data are voltage and current produced by the solar panel every ten minutes for ten hours continuous measurements. The solar panel performance was analysed by comparing maximum power, average power, and energy production per week. From the data measurements and analysis, it is found that the total energy produced is 3797 Wh, the average energy produced in one day is 61.24 Wh, and the average peak hour is 11.20 a.m.</em><em></em></p>

Rancang Bangun Sistem Informasi Zakat Infaq Shodaqoh Menggunakan Metodologi Extreme Programming

2018 ◽  
Vol 9 (1) ◽  
pp. 31-42
Author(s):  
Rysa Sahrial
Keyword(s):  
Information System ◽  
The Other ◽  
Extreme Programming ◽  
Limited Time ◽  
Limited Information ◽  
Research Information ◽  
Development Method ◽  
Know How ◽  
Five Factors ◽  
Research Information System

Poverty is one continuing social issue which is hard to solve. Dealing with this problem, Islam has already had the alternative solution that is tithe (Zakat). Zakat is implemented to decrease economy imbalanced appeared in the society. While in fact, not all the Moslem pay Zakat. There are five factors as the reason why Moslem didn’t do that. First, some Muzakki wants to deliver his zakat directly.Seconde, not all Muzakki know how much Zakat must be paid. The other factors are Limited information about Mustahik home, limited time that Muzakki have to deliver his Zakat directly and the easiness to report Mustahik data. Dealing with those factors, it is required to have an information system which can make Muzakki meets Mustahik. In this research, information system application used Extreme Programming (XP) development method. XP method is required to program a system which will be made by accomodating the users’ needs and expectations.

Understanding the use of pulse oximetry in COVID-19 disease

2021 ◽  
Vol 32 (8) ◽  
pp. 312-316
Author(s):  
Paul Silverston
Keyword(s):  
Oxygen Saturation ◽  
Pulse Oximetry ◽  
Respiratory Symptoms ◽  
Disease Process ◽  
Clinical Findings ◽  
The Other ◽  
Know How ◽  
Non Invasive ◽  
Pulse Oximeters ◽  
The Way

The pandemic has led to an increase in the use of pulse oximetry to assess and manage patients with COVID-19 disease. Paul Silverston explains the principles of pulse oximetry and the factors that can affect the reliability and accuracy of readings Pulse oximetry is performed to detect and quantify the degree of hypoxia in patients with respiratory symptoms and illnesses, including patients with COVID-19 disease. Pulse oximeters are non-invasive, simple to use and inexpensive, but it is important to know how to interpret the readings in the context of the patient's symptoms and the other clinical findings. In COVID-19 disease, very small differences in the oxygen saturation reading result in significant differences in the way that the patient is managed, so it is important to be aware of the factors that can affect these readings. It is also important to appreciate that a low reading in a patient with suspected or confirmed COVID-19 disease may be the result of another disease process.

Observations of the Earth’s resources

1969 ◽  
Vol 308 (1493) ◽  
pp. 173-182 ◽  
Keyword(s):  
Mineral Exploration ◽  
Geological Mapping ◽  
The Other ◽  
Ground Control ◽  
Great Contribution ◽  
Know How ◽  
Control Information ◽  
The World ◽  
The One ◽  
Effective Development

In attempting to present some observations on the kind of information on the Earth’s resources which may be obtained from spacecraft and space satellites, I think I should explain that I speak as a geographer with research interests in the field of biogeography/geobotany where I have been concerned with the use of vegetation in mineral exploration work and in the assessment of land potential for agricultural and other uses. In the course of this work I have come to appreciate major problems of regional or even continental dimensions and have become aware of the great potential offered by suitably equipped Earth resources satellites for providing information which would assist their solution. At the same time I have come to recognize the great contribution which Earth resources satellites can make in the fields of agriculture, forestry and conservation, topographical and geological mapping, hydrology, oceanography, land use and urban planning, to mention but a few. As a setting for my subsequent remarks I would like to state what I believe to be the relative positions of the U. S. A. and the U. S. S. R. on the one hand and this country and certain West European countries on the other with regard to the acquisition of information from Earth resources satellites. America and Russia have led the world in space research. They have the resources, the facilities and the technical know-how for placing spacecraft and satellites in orbit. For the effective development of Earth resources satellites, however, ground control information is essential. Here this country, together with member and former member countries of the Commonwealth possesses a body of people scattered through universities, government departments and organizations, commerce and industry whose firsthand knowledge of remote terrain in many parts of the world is unrivalled. This knowledge harnessed into an Earth resources satellites programme could enable this country to make a leading contribution to the development of the less developed parts of the world and at the same time materially assist the economy of this country.

Scientific Uncertainty: An Insuperable Obstacle to Compensation for Environmental Causes of Ill Health?

2000 ◽  
Vol 11 (2) ◽  
pp. 193-205
Author(s):  
Chris Miller
Keyword(s):  
Energy Production ◽  
The Other ◽  
Scientific Uncertainty ◽  
Electricity Distribution ◽  
Power Cables ◽  
Nuclear Fuel Reprocessing ◽  
Environmental Causes ◽  
Nuclear Fuel Reprocessing Plant ◽  
Reprocessing Plant ◽  
Fuel Reprocessing

In this paper, I review the conceptual and legal obstacles faced by those who seek redress for health detriment which is though to be environmental in origin. I use two case studies concerned with radiation: one is related to energy production (paternal pre-conceptional irradiation of workers at a nuclear fuel reprocessing plant), the other involves electricity distribution (the alleged link between leukaemia and power cables). Judicial approaches to scientific uncertainty inherent in these two cases are examined. The more science points to a hitherto unimagined range of threats to human health, the fewer grounds remain for confidence in the capacity of tort to secure appropriate compensation for the putative victims.

scholarly journals An Analysis of the Energetics of Tropical and Extra-Tropical Regions for Warm ENSO Composite Episodes

2017 ◽  
Vol 32 (1) ◽  
pp. 39-51
Author(s):  
Zayra Christine Sátyro ◽  
José Veiga
Keyword(s):  
Kinetic Energy ◽  
Potential Energy ◽  
El Niño ◽  
Energy Production ◽  
El Nino ◽  
Southern Oscillation ◽  
Stable Condition ◽  
The Other ◽  
Tropical Regions ◽  
Using Data

Abstract This study focuses on the quantification and evaluation of the effects of ENSO (El Niño Southern Oscillation) warm phases, using a composite of five intense El Niño episodes between 1979 – 2011 on the Energetic Lorenz Cycle for four distinct regions around the globe: 80° S – 5° N (region 1), 50° S – 5° N (region 2), 30° S – 5° N (region 3), and 30° S – 30° N (region 4), using Data from NCEP reanalysis-II. Briefly, the results showed that zonal terms of potential energy and kinetic energy were intensified, except for region 1, where zonal kinetic energy weakened. Through the analysis of the period in which higher energy production is observed, a strong communication between the available zonal potential and the zonal kinetic energy reservoirs can be identified. This communication weakened the modes linked to eddies of potential energy and kinetic energy, as well as in the other two baroclinic conversions terms. Furthermore, the results indicate that for all the regions, the system itself works to regain its stable condition.

scholarly journals ‘Knowing How’ in Slovene: Treading the Other Path

Slovene ◽  
2017 ◽  
Vol 6 (1) ◽  
pp. 95-117 ◽  
Author(s):  
Barbara Sonnenhauser
Keyword(s):  
Point Of View ◽  
The Other ◽  
Peculiar Feature ◽  
Linguistic Expression ◽  
Knowing How ◽  
Know How ◽  
Slavic Languages ◽  
Modal Verb ◽  
Contemporary Standard

For the linguistic expression of the concept of knowledge, the Slavic languages use verbs deriving from the Indo-European roots *ĝnō and *ṷei̭d. They differ in terms of the availability of both types of verbs in the contemporary standard languages and in terms of their semantic range. As will be shown in this paper, these differences are interesting not only from a language-specific lexicological point of view, but also in the context of the intersection of lexicon and grammar. Covering the domain of ‘knowing how,’ the *ĝnō-based verb in Slovene (znati) has been extending into the domain of possibility and, on this basis, developing into a modal verb. While this development is not surprising from a typological point of view, it is remarkable from a Slavic perspective, since this particular grammaticalisation path towards possibility is otherwise unknown to Slavic. This peculiar feature of Slovene, which most probably relates to its long-lasting and intensive contact with German, is illustrated in the present paper by comparing Slovene to Russian on the basis of three main questions: 1) the semantic range of vedeti / vedatʹ and znati / znatʹ, 2) the lexicalisation of ‘know how,’ and 3) the relation between knowledge, ability, and possibility. The focus is on contemporary Slovene and Russian, leaving a detailed diachronic investigation and the further embedding into a larger Slavic and areal perspective for future analyses.

scholarly journals Analisis Sifat Fisik dan Kimia Yogurt Yang Menggunakan Starter Lactobacillus bulgaricus Dengan Persentase Yang Berbeda

2001 ◽  
Vol 2 (2) ◽  
pp. 22-25
Author(s):  
Yusdar Zakaria
Keyword(s):  
Crude Protein ◽  
Titratable Acidity ◽  
The Other ◽  
Lactobacillus Bulgaricus ◽  
Know How ◽  
Other Hand

ABSTRACT.  A study of pyisical properties and quality of yogurt with Lactobacillus bulgaricus as a starter has been doon. Objectives of this study is to know how many percent starter of L. bulgaricus in yogurt to decrease suscepetibility to syneresis and to increase quality of yogurt. Yogurt was analyzed for susceptibility to syineresis, titratable acidity and content of crude protein and crude fat. Syinerisis of yogurt was evaluated according to centrifugal methods of Halwarkar and Kalab. The result of the study showed that yogurt with 2.5-10 % L. bulgaricus as a starter are not have any effect of susceptibility to synerisis and content of crude fat, but centripuged at 250-1000 rpm. Had significantly different (0.01) on susceptibility to synerisis. On the other hand the increasing of centrifuge rotation, increase susceptibility to synerisis. The starter of 5-10% L. bulgaricus used in yogurt able to increase titratable acidity and content of crude protein. The yogurt prepared by 10% L. bulgaricus had the highest score (3.88%) of crude protein, although there is no significant differences with yogurt using 7.5% L. bulgaricus.

scholarly journals Politics Representation and Symbolic Violence through the Discourse of Seram as Nusa Ina

2017 ◽  
Vol 28 (3) ◽  
pp. 265
Author(s):  
Flavius Floris Andries
Keyword(s):  
Identity Formation ◽  
Qualitative Method ◽  
Political Representation ◽  
Folk Songs ◽  
The Other ◽  
Symbolic Violence ◽  
False Consciousness ◽  
Interesting Phenomenon ◽  
Know How ◽  
Depth Interview

Political representation and symbolic violence through discourse Seram as Nusa Ina (Mother Island) are interesting phenomenon to be studied. This research was conducted with a qualitative method by in-depth interview and participation observation which aims to know how does this discourse view. The cultural study was applied in order to comprehend the manners of creating, producing, and disseminating the meanings from the perspective of non-Seram society and what their views on the discourse in understanding Moluccas universal identity. The process of data analysis by using the cultural studies approach generated the findings i.e the Nunusaku myth that legitimizes and strengthens Seram as Nusa Ina in society, and that there was a significant influence of myth and discourse in Moluccas identity formation universally in the form of folk songs or reliefs that always shade of Seram in represents the Moluccans. The discourse of Seram as Nusa Ina for the community of non-Seram, especially for Southeast people, is not substantial because they do not have emotional connection or relationship with the genealogy and cultural discourse. They have the other myth and the other own discourse about the myth itself such as Vernusang Island which was sinking in the formation of people’s live in the Southeast. Therefore, the discourse of Seram as Nusa Ina which is forced to become a part of the discourse of Southeast People is a form of a false consciousness as well as form of political representation and symbolic violence.

scholarly journals On the Possibilities of Researching the Marriage Policies of the Rurikids: The Case of Mstislav Fyodor Vladimirovich Monomakhovich

2018 ◽  
Vol 8 ◽  
pp. 91-110
Author(s):  
Dariusz Dąbrowski
Keyword(s):  
Middle Ages ◽  
Source Material ◽  
The Other ◽  
Primary Sources ◽  
Basic Question ◽  
The Political ◽  
Know How ◽  
Cultural Sphere ◽  
The Subject ◽  
The One

The main goal of the article is to present the possibilities and methods of research on the Rurikid’s matrimonial policy in the Middle Ages on the example of a selected group of princes. As the subject of studies were chosen Mstislav Vladimirovich and his children. In total, 12 matrimonial relationships were included. The analysis of the source material revealed very unfavorable phenomena from the perspective of the topic under study. The Rus’ primary sources gave information on the conclusion of just four marriages out of twelve. The next four matrimonial arrangement inform foreign sources (Scandinavian and Norman). It should be emphasized particularly strongly that – save for two exceptions of Scandinavian provenance – the sources convey no information whatsoever as regards the political aims behind this or that marriage agreement. It appears, then, that the chroniclers of the period and cultural sphere in question did not regard details concerning marriages (such as their circumstances or the reasons behind them) as “information notable enough to be worth preserving”. Truth be told, even the very fact of the marriage did not always belong to this category. Due to the state of preservation of primary sources the basic question arises as to whether it is possible to study the Rurikids’ matrimonial policy? In spite of the mercilessly sparse source material, it is by all means possible to conduct feasible research on the Rurikids’ marriage policy. One must know how to do it right, however. Thus, such studies must on the one hand be rooted in a deep knowledge of the relevant sources (not only of Rus’ provenance) as well as the ability to subject them to astute analysis; on the other hand, they must adhere to the specially developed methodology, presented in the first part of the article.

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