scholarly journals Penentuan Efisiensi Sel Surya Merk Skytec Solar Model Sip-220 dengan Bantuan Software Logger Pro

2020 ◽  
Vol 3 (1) ◽  
pp. 14-17
Author(s):  
M Subhan
Keyword(s):  
Fill Factor ◽  
Solar Model ◽  
Microsoft Excel ◽  
Voltage Probe ◽  
Sensor Voltage

Penelitian ini dilatarbelakangi oleh pembelajaran fisika tentang konversi energi terbarukan khususnya energi surya dan kurangnya informasi tentang materi ini siswa dan guru kurang memahami metode pengukuran untuk mengetahui kualitas pada suatu sel surya terkait efisiensi dan fill factor, sehingga dalam penelitian dibuat buku suplemen untuk memberi informasi dan pemahaman kepada siswa tentang merancang eksperimen dengan memanfaatkan rangkaian pembagi tegangan dan mampu menggunakan software LoggerPro guna mempermudah perhitungan efisiensi sel surya serta memberi informasi baru kepada siswa tetang konversi energi terbarukan khususnya energi surya. Penelitian menggunakan metode eksperimen penentuan efisiensi sel surya merk Skytec Sollar Model Sip-220 dengan memanfaatkan rangkaian pembagi tegangan untuk meminimalkan tegangan maksimum dari sel surya supaya terbaca oleh alat sensor voltage probe dan current probe. Data diambil dari salah satu modul surya polikristal berjumlah 72 sel dengan dimensi 0,987 m x 1,637 m. Intensitas energi cahaya matahari pada saat penelitian 1052 watt. Arus maksimum (Im) dan tegangan maksimum (Vm) diperoleh dari hasil baca oleh software LoggerPro kemudian arus hubungan singkat (Isc) diperoleh dari intercept kurva sedangkan tegangan rangkaian terbuka (Voc) diperoleh dari titik potong kurva serhadap sumbu x, nilai (Isc) dan (Voc) merupakan hasil fitting data tegangan-arus (Vi, Ii) menurut persamaan linier y = ax + b pada Microsoft excel®. Hasil penelitian menunjukkan bahwa fill factor yang diperoleh dari masing-masing rangkaian dengan resistor (R1 = 47 Ω, dan R2 = 120 Ω hasilnya adalah 0,416), (R1 = 47 Ω, dan R2 = 122 Ω hasilnya adalah 0,624), (R1 = 47 Ω, dan R2 = 140 Ω hasilnya adalah 0,770), (R1 = 47 Ω, dan R2 = 155 Ω hasilnya adalah 0,777), R1 = 47 Ω, dan R2 = 162 Ω hasilnya adalah 0,769), R1 = 47 Ω, dan R2 = 169 Ω hasilnya adalah 0,773), (R1 = 47 Ω, dan R2 = 184 Ω hasilnya adalah 0,770), (R1 = 47 Ω, dan R2 = 191 Ω hasilnya adalah 0,735), dan (R1 = 47 Ω, dan R2 = 200 Ω hasilnya adalah 0,784), dan rata-rata nilai fill factor nya adalah 0,713 sehingga nilai efisiensi sel surya juga didapat secara berurutan 10,28 %, 13,19 %, 12,66 %, 11,60 %, 11,32 %, 10,78 %, 10,78 %, 10,00 % dan 9,31 % dan nilai rata-rata dari efisiensinya 11,1 %. Naik turunya nilai efisiensi kemungkinan besar sangat berpengaruh terhadap keadaan atau perubahan naik turunya suhu di sekitar modul akibat dari kecepatan angin dan mendung yang tiba-tiba

Current Issues: Advanced Digital Technology for Supervising Graduate Clinicians

2010 ◽  
Vol 20 (1) ◽  
pp. 9-13 ◽  
Author(s):  
Glenn Tellis ◽  
Lori Cimino ◽  
Jennifer Alberti
Keyword(s):  
Real Time ◽  
Digital Technology ◽  
Clinical Training ◽  
State Of The Art ◽  
Clinical Skills ◽  
Slow Motion ◽  
Video Capture ◽  
Microsoft Excel ◽  
Clinical Supervisors ◽  
Training And Supervision

Abstract The purpose of this article is to provide clinical supervisors with information pertaining to state-of-the-art clinic observation technology. We use a novel video-capture technology, the Landro Play Analyzer, to supervise clinical sessions as well as to train students to improve their clinical skills. We can observe four clinical sessions simultaneously from a central observation center. In addition, speech samples can be analyzed in real-time; saved on a CD, DVD, or flash/jump drive; viewed in slow motion; paused; and analyzed with Microsoft Excel. Procedures for applying the technology for clinical training and supervision will be discussed.

Prescribing trends of antidiabetic drugs in diabetic and hypertensive diabetic patients in an urban tertiary care hospital of Bangladesh

2017 ◽  
Vol 3 (3) ◽  
pp. 338-343
Author(s):  
Mohammad Didar Khan ◽  
Md. Ibrahim ◽  
Md. Mizanur Rahman Moghal ◽  
Dipti debnath ◽  
Asma Kabir ◽  
...  
Keyword(s):  
Urban Areas ◽  
Tertiary Care ◽  
Diabetic Patients ◽  
Care Hospital ◽  
Age Group ◽  
Microsoft Excel ◽  
Patient Profile ◽  
Prescribing Trends ◽  
Medical University ◽  
Insight Into

Objective: The present epidemiological study was conducted with the objectives of providing an insight into the current use of antidiabetic medications to diabetics and hypertensive diabetics in urban areas and determining how the patient factors influence the prescribing of antidiabetic medications. Methodology: Data of patients of past two years were collected from Bangabandhu Sheikh Mujib Medical University (BSMMU) Hospital, Dhaka, Bangladesh. The details were entered in the structured patient profile form. Data were statistically analyzed using the Microsoft Excel 2007 software. Result: A total of 958 patient’s data were collected and analyzed of which 632 (65.97 %) were males and 326 (34.03 %) were females. These patients were further categorized based on their age. 330 patients (34.45 %) belonged to the age group 20 – 44 years, 504 (52.61 %) to the age group 45 – 65 years and 124 (12.94 %) to the age group 65 – 80 years. 684 (71.4%) patients out of the 958 patients studied were suffering from coexisting hypertension. Co-existing hypertension was found to be more prevalent in the age group 45 – 65 years (67.69%) and was found more in females (84.04%). Conclusion: Metformin was the oral hypoglycemic which was the highest prescribed. In hypertensive diabetics Metformin and Pioglitazone were most frequently prescribed drugs. Biguanides and Insulin were the most commonly prescribed antidiabetics. A combination of two or more drugs of different classes was prescribed to hypertensive diabetics. It is necessary to have an improved understanding of the etiology and pathophysiology of diabetes to focus on research efforts appropriately.

Perancangan Pengkondisian Udara pada Ruangan Steril Rumah Sakit Mitra Medika dengan Standard Cleanroom Menggunakan Instalasi Ducting

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Fremmy Raymond Agustinus
Keyword(s):  
Air Conditioning ◽  
Static Pressure ◽  
Filter Medium ◽  
Positive Pressure ◽  
Design Tools ◽  
Microsoft Excel ◽  
Cooling Unit ◽  
X 24 ◽  
Air Passage ◽  
Booster Fan

Desain penyejuk udara juga dapat diterapkan di bidang kesehatan, dengan standar Cleanroom dapat diperoleh suhu, kelembaban, kenyamanan dan kebersihan yang dibutuhkan untuk ruang steril (ruang bedah). Perancangan pendingin udara dalam hal ini dilakukan dengan menentukan beban pendinginan yang diperlukan untuk ruang steril (ruang bedah), kemudian menentukan ukuran ducting, jalur ducting, dan jumlah penggunaan ducting. Desain ini menggabungkan unit split saluran yang dimodifikasi, kipas booster, filter pra, filter medium, dan filter HEPA dengan menggunakan saluran aluminium preinsulated sebagai saluran udara. Desain dilakukan dengan menggunakan perangkat lunak AutoCAD 2012, Design Tools Duct Sizer, dan Microsoft Excel. Dari hasil perhitungan dan desain didapatkan kebutuhan kapasitas 3 ruang bedah yaitu ducted ducted 100.000 BTUH sebanyak 3 unit, booster fan 3.3 - 4 Di WG sebanyak 3 unit, pre filter 24 "x 24" x 2 "6 set, filter menengah 610 x 610 x 290 mm 6 set, dan filter HEPA 1220 x 610 x 70 mm 12. Untuk ruang steril, tekanan statis yang dihasilkan oleh unit pendingin harus lebih besar daripada tekanan statis yang dihasilkan dari unit yang ada. di ruang semi steril. Dengan kata lain, ruang steril harus memiliki tekanan positif terhadap ruang semi steril. Hal ini dimaksudkan agar udara di ruang semi steril tidak masuk ke ruang steril ketika pintu antar ruangan dibuka. Desain dan perhitungan ruang bedah, suhu nyata yang diperoleh adalah 23 ° C ± 2 ° C dan kelembaban relatif yang diperoleh adalah 60% ± 2%.   Air conditioning design can also be applied in the health field, with cleanroom standard can be obtained temperature, humidity, comfort and hygiene needed for sterile room (surgical room). The design of air conditioning in this case is done by determining the cooling load required for the sterile room (surgical room), then determining the ducting size, ducting path, and the amount of ducting usage. This design combines modified ducted split unit, booster fan, pre filter, medium filter, and HEPA filter by using preinsulated aluminum duct as an air passage. The design is done by using AutoCAD 2012 software, Design Tools Duct Sizer, and Microsoft Excel. From the calculation and design result obtained the capacity requirement of 3 surgical room that is split ducted 100.000 BTUH as many as 3 units, booster fan 3.3 - 4 In WG as many as 3 units, pre filter 24"x 24" x 2" 6 sets, medium filter 610 x 610 x 290 mm 6 sets, and HEPA filter 1220 x 610 x 70 mm 12 sets. For the sterile room, the static pressure generated by the cooling unit shall be larger than the static pressure generated from the unit present in the semi sterile room. In other words, the sterile room must have positive pressure to the semi sterile room. It is intended that the air in the semi sterile room does not enter into the sterile room when the door between room opened. In this surgical room design and calculation, real temperature obtained is 23 °C ± 2 °C and the relative moisture obtained is 60% ± 2%.

Telaahan Penerapan Sistem Informasi Akuntansi Berbasis Komputer Akuntansi (Menggunakan Microsoft Excel) dalam Penyajian Laporan Keuangan (Studi Kasus pada Rumah Sakit Islam Bogor)

2010 ◽  
Vol 6 (02) ◽  
pp. 49
Author(s):  
Syarief Gerald Prasetya
Keyword(s):  
Information System ◽  
Balance Sheet ◽  
Accounting Information ◽  
Financial Statement ◽  
Microsoft Excel ◽  
Financial Reports ◽  
Accounting Information System ◽  
Achievement Data ◽  
Medical Needs ◽  
Processing Data

Hospital was established to serve the medical needs of the citizen. In addition to serving, hospitals also need to explore the benefits for the sustainability and the development of the hospital. To achieve financial reports have involved a large role. Accounting information system computer-based accounting will help serving the financial reports, so that more accurate and faster. Errors can be diminished.  Research object is selected by the author to conduct research is Bogor Rumah Sakit Islam. A hospital that is located on Jl. Perdana Raya. 22 Budi Agung, Jakarta Utara. This hospital was established on May 12, 1991. The location is strategic as it is in the center of Bogor. In doing activity, accounting information system based on computerized accounting still not yet common use. Computer already exist but support application to create an accurate and fast financial statement does not exist. So much weaknesses if we still using manual method. Like slowly processing data, still using much worker and much step while processing. The information result is still contained high mistake. To solve all problems above we need accounting software as tool for accounting division. For that I try to apply computerized accounting using Microsoft Excel for helping creating financial statement. By doing observation and interview with related employee, this research can do well. Journalize transaction process by using Microsoft Excel is to make a column for each transaction such as Journal Voucher, General Ledger, Balance Sheet. After making a column, the next step is inputing achievement data to Journal Voucher. After inputing data, General Ledger and Balance Sheet can automatically fill up. By using computer, processing data is more faster, information result is more accurately, human resource is less needed. Related management can get information they need more faster, because amount recalculated every doing transaction.

MODULE OF ICT-BASED LEARNING MATHEMATICS: RESPONSE OF STUDENTS IN THE LEARNING PROCESS

2020 ◽  
Vol 4 (3) ◽  
Author(s):  
Endang Istikomah
Keyword(s):  
Mathematics Learning ◽  
Student Response ◽  
Questionnaire Data ◽  
Research Subjects ◽  
Microsoft Excel ◽  
Learning Modules ◽  
Descriptive Research ◽  
Learning Module ◽  
Learning Mathematics ◽  
Learning Guide

The use of modules in learning aims so that students can learn independently without or with the guidance of the lecturer. There is no teaching material as a learning guide that meets the needs of students in IT-based mathematics learning courses in the form of LKM, Modules or textbooks.This study aims at finding and examining further the response of students to ICT-based mathematics learning modules. The form of this research is descriptive research. The research subjects of the even semester students are 2018/2019 in ICT-based mathematics learning courses. The instrument used was a student response questionnaire. Data collection techniques using a Likert scale through Google Form. The data was processed using Microsoft Excel 2010. The results showed that student’s responses to the ICT-based mathematics learning module as a whole were positive with an average on the material Aspects, the Interest Aspects of the module and the Module Aspects respectively of 92, 42%, 87 % and 93, 16%.. Thus it can be concluded that ICT-based mathematics learning using modules can be applied.

Microcrystalline (Si,Ge):H Solar Cells

2003 ◽  
Vol 762 ◽  
Author(s):  
Jianhua Zhu ◽  
Vikram L. Dalal
Keyword(s):  
Solar Cells ◽  
Buffer Layer ◽  
Quantum Efficiency ◽  
Fill Factor ◽  
Open Circuit Voltage ◽  
Defect Density ◽  
Cell Structure ◽  
Open Circuit ◽  
Base Layer ◽  
Ecr Plasma

AbstractWe report on the growth and properties of microcrystalline Si:H and (Si,Ge):H solar cells on stainless steel substrates. The solar cells were grown using a remote, low pressure ECR plasma system. In order to crystallize (Si,Ge), much higher hydrogen dilution (∼40:1) had to be used compared to the case for mc-Si:H, where a dilution of 10:1 was adequate for crystallization. The solar cell structure was of the p+nn+ type, with light entering the p+ layer. It was found that it was advantageous to use a thin a-Si:H buffer layer at the back of the cells in order to reduce shunt density and improve the performance of the cells. A graded gap buffer layer was used at the p+n interface so as to improve the open-circuit voltage and fill factor. The open circuit voltage and fill factor decreased as the Ge content increased. Quantum efficiency measurements indicated that the device was indeed microcrystalline and followed the absorption characteristics of crystalline ( Si,Ge). As the Ge content increased, quantum efficiency in the infrared increased. X-ray measurements of films indicated grain sizes of ∼ 10nm. EDAX measurements were used to measure the Ge content in the films and devices. Capacitance measurements at low frequencies ( ~100 Hz and 1 kHz) indicated that the base layer was indeed behaving as a crystalline material, with classical C(V) curves. The defect density varied between 1x1016 to 2x1017/cm3, with higher defects indicated as the Ge concentration increased.

Kinetics of Light-Induced Effects in Mixed-Phase Hydrogenated Silicon Solar Cells

2003 ◽  
Vol 762 ◽  
Author(s):  
Guozhen Yuea ◽  
Baojie Yan ◽  
Jeffrey Yang ◽  
Kenneth Lord ◽  
Subhendu Guha
Keyword(s):  
Solar Cells ◽  
Fill Factor ◽  
Equivalent Circuit Model ◽  
Open Circuit ◽  
Mixed Phase ◽  
Silicon Solar Cells ◽  
Initial Increase ◽  
Soaking Time ◽  
Hydrogenated Silicon ◽  
Kinetics Of

AbstractWe have observed a significant light-induced increase in the open-circuit voltage (Voc) of mixed-phase hydrogenated silicon solar cells. In this study, we investigate the kinetics of the light-induced effects. The results show that the cells with different initial Voc have different kinetic behavior. For the cells with a low initial Voc (less than 0.8 V), the increase in Voc is slow and does not saturate for light-soaking time of up to 16 hours. For the cells with medium initial Voc (0.8 ∼ 0.95 V), the Voc increases rapidly and then saturates. Cells with high initial Voc (0.95 ∼ 0.98 V) show an initial increase in Voc, followed bya Voc decrease. All light-soaked cells exhibit a degradation in fill factor. The temperature dependence of the kinetics shows that light soaking at high temperatures causes Voc increase to saturate faster than at low temperatures. The observed results can be explained by our recently proposed two-diode equivalent-circuit model for mixed-phase solar cells.

IŠANKSTINĖ INKSTŲ TRANSPLANTACIJA: VUL SK PATIRTIS

2017 ◽  
Vol 22 (3) ◽  
pp. 218-222
Author(s):  
Raminta Nikartaitė ◽  
Laurynas Rimševičius ◽  
Loreta Vareikienė ◽  
Diana Sukackienė ◽  
Eglė Kontrimavičiūtė ◽  
...  
Keyword(s):  
Microsoft Excel

Reikšminiai žodžiai: išankstinė inkstų transplantacija, gyvas donoras, dializė, galutinės stadijos inkstų liga. Tyrimo tikslas. Palyginti pirmųjų dvejų metų rezultatus po išankstinės inkstų transplantacijos su neišankstinės transplantacijos iš gyvo donoro rezultatais. Tyrimo medžiaga ir metodika. Retrospektyviai buvo išanalizuoti 131 paciento, kuriems 1999–2015 m. VUL SK buvo atlikta išankstinė inkstų transplantacija arba neišankstinė inkstų transplantacija iš gyvo donoro, medicininiai dokumentai. Į galutinę analizę pateko 122 pacientai. Vertinta pacientų glomerulų filtracijos greičio (apskaičiuoto pagal CKD–EPI formulę) ir proteinurijos dinamika, ūminio transplantato pažeidimo atvejai, komplikacijų, citomegalo viruso (CMV) sukeltų infekcijų, atmetimo reakcijų dažnis, transplantatų ir pacientų išgyvenamumas. Statistinė duomenų analizė atlikta „Microsoft Excel“ programa (statistinės išvados atliktos remiantis Stjudento t kriterijumi ir X2 testo funkcija), statistinio reikšmingumo lygmuo – 0,05. Rezultatai. Išankstinės inkstų transplantacijos grupėje (n = 16) amžiaus vidurkis 28 ± 8 metai, vyrų ir moterų santykis 8:8. Vidutinis apskaičiuotas glomerulų filtracijos greitis transplantacijos metu – 7,2 ± 2,3 ml/min/1,73 m2. Transplantacijos iš gyvo donoro grupėje (n = 106) amžiaus vidurkis 34 ± 11 metų, vyrų ir moterų santykis 65:41 (61:39 proc.). Hemodializių (99 (93 proc.)) ar peritoninių dializių (7 (7 proc.)) trukmės mediana – 11 mėnesių. Ūminis inksto transplantato pažeidimas diagnozuotas 1 (6 proc.) pacientui iš išankstinės inksto transplantacijos grupės ir 7 (7 proc.) neišankstinės transplantacijos grupės pacientams. Komplikacijų (infekcijos, kuriai gydyti prireikė hospitalizacijos, kardiovaskulinių įvykių, piktybinių navikų, tyrimais įrodytos osteoporozės) dažnis grupėse statistiškai reikšmingai nesiskyrė. Glomerulų filtracijos greitis (ml/min/1,73 m2) po transplantacijos grupėse statistiškai reikšmingai skyrėsi tik pirmąjį mėnesį po transplantacijos, atitinkamai 69,7 ± 22,5 ir 61,6 ± 29,8 (p = 0,027). Proteinurijos kiekio skirtumas per dvejus metus po transplantacijos tarp grupių nebuvo statistiškai reikšmingas. Išankstinės transplantacijos grupėje transplantato ir paciento dvejų metų išgyvenamumas buvo 89 proc. ir 100 proc., o neišankstinės transplantacijos – atitinkamai 91 proc. ir 98 proc. (p > 0,05). Išvados. Atlikus išankstinę inkstų transplantaciją per pirmuosius dvejus metus po transplantacijos ūminio inksto transplantato pažeidimo, komplikacijų, citomegalo viruso sukeltų infekcijų, atmetimo reakcijų dažnis ir proteinurijos kiekis nesumažėja, tačiau, palyginti su neišankstine transplantacija iš gyvo donoro, pirmąjį mėnesį po transplantacijos reikšmingai padidėja glomerulų filtracijos greitis. Transplantato ir paciento išgyvenamumas grupėse panašus.

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