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Fabrication of dye natural as a photosensitizers in dye-sensitized solar cells (DSSC) Hardani, Hardani; Hendra, Hendra; Darmawan, Muh. Iman; Cari, C; Supriyanto, Agus
Journal of Physics: Theories and Applications Vol 1, No 1 (2017): Journal of Physics: Theories and Applications
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jphystheor-appl.v1i1.4704

Abstract

The purpose of this study was to obtain optical properties (absorption spectrum) and electrical properties (photoconductivity) of organic dyes in DSSC performance. optical and electrical properties were tested by using UV-Visible Spectrophotometer and Elkahfi 1601 PC 100 / IV meter, respectively, while Keithley Type 2600A is used for the characterization of DSSC. This study is a great base to explore and investigate the development of DSSC solar cells using natural dyes (organic). Spectra optimal absorption and photoconductivity produced by natural dyes (organic). The results of this study indicate that the absorption spectrum of natural dyes (organic) in the range of 300-500 nm. electrical characteristics (I-V) of the increase in linear dye under illumination. I-V characteristics of DSSC from organically produced natural dyes to color the biggest-mangosteen obtained Voc of 565 mV; JSC = 1.52 A / m2; FF = 0.12; and η_ef is approximately 0.09%, respectively,. The conclusion of this study, natural dyes (organic) can be an attractive alternative as a dye.
PENGARUH PEMBERIAN EKSTRAK ETANOL DAUN KEMANGI (Ocimum citriodorum) TERHADAP PERTUMBUHAN BAKTERI Shigella disentriae aini, aini; hardani, Hardani
MEDIA OF MEDICAL LABORATORY SCIENCE Vol 1, No 1 (2017): MEDIA OF MEDICAL LABORATORY SCIENCE
Publisher : Politeknik Medica Farma Husada Mataram

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Abstract

Tujuan penelitian ini adalah untuk mengetahui pemberian Ocimum citriodorum daun kapsul pada pertumbuhan bakteri Shigella disentriae. Penelitian ini telah dilakukan di laboratorium mikrobiologi Politeknik Medika Farma Husada Mataram pada bulan Oktober 2016. Rancangan percobaan penelitian ini adalah rancangan acak lengkap dengan lima konsentrasi: 2%, 4%, 6%, 8%, 10%. Parameter yang diamati bakteri Shigella disentriae dengan menghitung diameter zona yang diblokir dengan 24 jam. Hasil penelitian menunjukkan 18,8 mm diameter zona terbesar yang dihasilkan dengan konsentrasi 10%. Diameter zona terkecil dengan diameter 12 mm yang dihasilkan sebesar 4%.
TINGKAT PENGETAHUAN REMAJA TERHADAP BAHAYA ROKOK DI LINGKUNGAN KAMPUNG PELITA DASAN AGUNG MATARAM Praditha, Dedy Indra; Hardani, Hardani; Utami, Evi Fatmi
PARMACEUTICAL AND TRADITIONAL MEDICINE Vol 2, No 1 (2018): PARMACEUTICAL AND TRADITIONAL MEDICINE
Publisher : Politeknik Medica Farma Husada Mataram

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Abstract

Rokok merupakan silinder dari kertas berukuran panjang antara 70 hingga 120 mm (bervariasi tergantung negara) dengan diameter sekitar 10 mm yang berisi daun-daun tembakau yang telah dicacah (Jaya, 2009). Rokok memilki Kandungan dalam asap rokok, antara lain : carbon monoksida (CO) yang dapat menyebabkan berkurang daya angkut bagi oksigen dan orang tersebutdapat meninggal dunia karena keracunan, amoniaacrolin, benzopiren dan lutidin berasal dari tar tembakau yang dapat menyebabkan kanker, Colidin menyebabkan kelumpuhan dan lambat laun mengakibatkan kematian, MetilAlkohol menimbulkan kebutaan, Formalin sering digunakan untuk membalsem mayat serta Arsenik merupakan sejenis racun yang dipakai untuk membunuh tikus.Berdasarkan penelitian yang dilakukan oleh Karyo (2012) yang menyatakan bahwa bahaya merokok bagi remaja diantaranya dapat meningkatkan resiko kanker paru-paru dan penyakit jantung di usia yang masih muda. Selain itu kesehatan kulit tiga kali lipat lebih beresiko terdapat keriput di sekitar mata dan mulut. Kulit akan menua sebelum waktunya atau biasa disebut dengan penuaan dini. Merokok di usia dini menyebabkan impotensi dan mengurangi jumlah sperma pada pria dan mengurangi tingkat kesuburan pada wanita.Tujuan penelitian ini adalah untuk mengetahui berapa besar tingkat pengetahuan remaja Lingkungan Kampung Pelita Dasan Agung Mataram terhadap bahaya merokok menggunakan analisis data rumus persentase dengan metode Deskriptif. Hasil yang diperoleh rata-rata tingkat pengetahuan siswa Remaja tentang bahaya merokok didapatkan hasil rata-rata persentase 54,72 % termasuk dalam kategori yaitu cukup. 
UJI EFEKTIVITAS ANTIBAKTERI EKSTRAK RUMPUT LAUT (Eucheuma cottonii) TERHADAP BAKTERI Bacillus cereus dan Streptococcus mutans Sari, Arnita; Auliya, Nurhikmatul; Hardani, Hardani
PARMACEUTICAL AND TRADITIONAL MEDICINE Vol 2, No 2 (2018): Pharmaceutical and Traditional Medicine
Publisher : Politeknik Medica Farma Husada Mataram

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Abstract

Rumput laut (Eucheuma cottonii) termasuk jenis ganggang (algae) yang hidup di laut, memiliki kandungan flavonoid yang mampu dijadikan sebagai antibakteri Bacillus cereus dan Streptococcous mutans merupakan bakteri patogen penyebab diare dan caries gigi. Antibakteri adalah senyawa yang digunakan untuk mengendalikan pertumbuhan bakteri yang bersifat merugikan. Metode yang digunakan dalam penelitian ini adalah metode eksperimen laboratorium. Hasil pengujian menunjukkan bahwa sediaan ekstrak etanol rumput laut (Eucheuma cottonii) dapat menghabat bakteri Bacillus cereuspadakonsentrasi 100%, 75%, 50%, dan25%sebesar 5,28 mm, 3,9 mm, 8,6 mm, 3,2 mm, sedangkan antibiotik khloramphenicol (K+) sebesar 21 mm, dan Aquades (K-) sebesar 0 mm, secara berturut-turut dengan sensitife sedang /resisten. Selain itu ekstrak Eucheuma cottonii juga menghambat bakteri Streptococcous mutans, pada konsentrasi 100%, 75%, 50%, dan 25% dengan nilai zona hambat 5,8 mm, 5 mm, 10,9 mm, 5,1 mm, sedangkan anti biotic khloramphenicol (K+) sebesar 21 mm, dan Aquades (K-) sebesar 0 mm secara berturut-turut dengan sensitifitas sedang/resisten
THE EFFICIENCY OF DYE-SENSITIZED SOLAR CELL (DSSC) IMPROVEMENT AS A LIGHT PARTY TiO2-NANO PARTICLE WITH EXTRACT PIGMENT MANGOSTANA PEEL (Garcinia Mangostana) WITH VARIOUS SOLVENTS Hardani, Hardani; Hidayatulloh, Alpiana; A., Lily Maesary
Jurnal Bahan Alam Terbarukan Vol 7, No 2 (2018): December 2018 [Nationally Accredited]
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v7i2.14488

Abstract

The dye-sensitized solar cell (DSSC) is one of the photochemical electrical cells consisting of a photoelectrode, dye, electrolyte, and counter electrode. The purpose of using dyes in the DSSC is to extend the absorption spectrum to visible light because visible light has about 96% energy from sunlight. This article presents some experimental data on the nature of absorbance and the conductivity of natural dyes extracted from the plant as an application in the DSSC. Absorbance test using Spectrophotometer UV Visible 1601 PC and electrical properties test using Elkahfi 100 / Meter I-V. DSSC fabrication has been done using dye extract of mangosteen skin pigment (Garcinia mangostana) with a variety of coating technique of Spin Coating and Slip Casting. The results show that natural dyes from natural material extraction have an absorbance spectrum of 380-520 nm range and the greatest conductivity is owned by mangosteen fruit skin pigment (Garcinia mangostana). From the results of the test using AM Simulator 1.5G (100 mW / cm2) diesel simulator, it was found that the volume of TiO2 precursors affected the performance of DSSC solar cells and the overall conversion efficiency was 0.084% for the mangosteen skin dye by slip casting technique and 0.092% for the mangosteen skin dye by spin coating technique.
MAKING PROTOTYPE DYE-SENSITIZED SOLAR CELLS (DSSC) BASED ON TiO2 NANOPORY USING EXTRACTION OF MANGOSTEEN PEEL (Garnicia mangostana) Hardani, Hardani; Hidayatullah, Alpiana; Angraini, Lily Maysari
Indonesian Physical Review Vol 1, No 1 (2018)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (647.469 KB) | DOI: 10.29303/ipr.v1i1.2

Abstract

Dye-sensitized solar cell (DSSC) is one of the photochemical electrical cells consisting of a photoelectrode, dye, electrolyte, and counter electrode. The manufacture of prototype Dye-sensitized solar cell (DSSC) utilizes carotene from the dye extract of mangosteen peel pigment (Garnicia mangostana). This study aims to create a Dye-sensitized solar cell (DSSC) and know the efficiency it produces. This Dye-sensitized solar cell (DSSC) consists of a pair of FTO (Flour-doped in oxide) glass intercepts facing each other. The glass acts as an electrode and counter electrode and separated by a redox electrolyte (I- / I3-), arranged to flank each other to form a wafer. In the electrode, is deposited a porous nanocrystalline TiO2 layer, as well as dye extract of mangosteen peel pigment (Garnicia mangostana). While on the counter electrode coated with a layer of platinum. This article presents some experimental data on absorbance properties and the conductivity of dye extract of mangosteen peel pigment (Garnicia mangostana) as an application in DSSC. Absorbance test using Spectrophotometer UV Visible 1601 PC and electrical properties test using Elkahfi 100 / Meter I-V. DSSC fabrication has been done using dye extract of mangosteen peel pigment (Garnicia mangostana) with coating spin coating technique. The results showed that the dye extract of mangosteen peel pigment (Garnicia mangostana) had an absorbance spectrum of 380-520 nm range. From the test results using AM 1.5G solar simulator (100 mW / cm2), it was found that the volume of TiO2 precursors affected the performance of DSSC solar cells and the overall conversion efficiency was 0.092%.
Improved Performance of Dye-Sensitized Solar Cells With TiO2 Nano-Particles by Using The Carrot as a Dye Solar Cell Application Hardani, Hardani; Angraeni, Lily Maysari; Cari, Cari; Supriyanto, Agus
Jurnal Fisika FLUX Vol 16, No 1 (2019): Jurnal Fisika Flux Edisi Februari 2019
Publisher : Lambung Mangkurat University Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/flux.v16i1.5563

Abstract

The aims of the research to were know performance of Dye-Sensitized Solar Cell (DSSC) using the dye of carrots (Daucus carota) as a photosensitizer with a variation of dye deposition area with spin coating techniques. The structure of the samples as a sandwich  consisting of the working electrode titanium dioxide (TiO2), dye, electrodes of platinum (Pt) and the electrolyte sandwiched between two electrodes. Test absorbance dye using UV-Visible Spectrophotometer Lambda 25, using a two-point conductivity test probes El Kahfi 100 and characterization test IV using a Keithley 2602A.. DSSC fabrication has been done using dye extract of carrots (Daucus carota) with a variety of solvent technique spin coating. The results show that dye extract of carrots (Daucus carota) have an absorbance spectrum of 380-520 nm range. From the results of the test using AM Simulator 1.5G (100 mW/ cm2) diesel simulator, it was found that the volume of TiO2 precursors affected the performance of DSSC solar cells and the overall conversion efficiency was 0.021% for the carrots (Daucus carota) dye with ethanol solvent and 0.037% for the carrots (Daucus carota) dye by solvent acetone.
Peningkatan Metakognitif Mahasiswa Fisika Pada Mata Kuliah Fisika Kuantum Hidayatulloh, Alpiana; Hr, Baiq Malikah; Hardani, Hardani
Kappa Journal Vol 2, No 1 (2018): KAPPA JOURNAL
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (525.063 KB) | DOI: 10.29408/kpj.v2i1.757

Abstract

Penelitian ini dilakukan di Universitas Hamzanwadi pada fakultas keguruan dan ilmu pendidikan program studi pendidikan fisika. Penelitian ini bertujuan untuk melihat lebih banyak metakognitif dari siswa pada kuantum, untuk melihat tidak ada tindakan yang dilakukan untuk melihat dan melihat berapa banyak siswa yang menggunakan data tersebut sebagai siswa angket metakognitif. Analisis data yang digunakan untuk angket dan angket hanya menggunakan nilai rata-rata dari hasil evaluasi dan biaya angket siswa secara keseluruhan. Dari hasil tes dapat disimpulkan bahwa metakognitif dari hasil evaluasi 75%.
PEMERIKSAAN GOLONGAN DARAH SEBAGAI UPAYA PENINGKATAN PEMAHAMAN SISWA TENTANG KEBUTUHAN DAN KEBERMANFAATAN DARAH Hardani, Hardani; Mustariani, Baiq Ayu Aprilia; Suhada, Adriyan; Aini, Aini
JMM (Jurnal Masyarakat Mandiri) Vol. 2, No. 1: Juni 2018
Publisher : Muhammadiyah University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jmm.v2i1.1330

Abstract

Abstrak: Darah merupakan salah satu komponen paling penting yang ada dalam tubuh, mengingat fungsinya  sebagai alat transportasi. Kekurangan darah di dalam tubuh dapat memacu sejumlah penyakit  dimulai dari anemia, hipotensi, serangan jantung, dan beberapa penyakit lainnya. Beberapa kasus lain seperti kecelakaan, luka bakar dan proses persalinan juga memerlukan tranfusi darah akibat tingginya kemungkinan pendarahan. Terdapat dua jenis penggolongan darah yang paling penting adalah penggolongan A-B-O dan Rhesus (faktor Rh). Transfusi darah dari golongan yang tidak kompatibel dapat menyebabkan reaksi transfusi imunologis yang berakibat anemia hemolisis, gagal ginjal, syok, dan kematian. Banyak diantara kita belum mengetahui jenis golongan darah yang kita miliki. Kasus ini menjadi sangat krusial ketika individu tersebut mengalami musibah, seperti kecelakaan yang mengakibatkan darah banyak keluar. Tindakan penanganan pasien menjadi terlambat, karena individu ini belum mengetahui jenis golongan darah yang ia miliki. Berdasarkan hasil observasi dengan siswa, Kepala Sekolah dan guru-guru Madrasah Aliyah NW Bagik Polak, dapat disimpulkan bahwa sebagian besar siswa di sekolah ini belum mengetahui golongan darah yang ia miliki. Kejadian ini  menjadi dasar kami untuk melakukan pengabdian kepada masyarakaat dalam hal ini siswa untuk mengecek golongan darah yang mereka miliki.Abstract:  Blood is one of the most important components in the body, given its function as a means of transportation. Blood deficiency in the body can spur some diseases starting from anemia, hypotension, heart attack, and some other diseases. Some other cases such as accidents, burns, and childbirth also require blood transfusions due to the high likelihood of bleeding. There are two most important types of blood type which are the A-B-O and Rhesus (RH) classification. Incompatible blood transfusions can cause immunological transfusion reactions that result in hemolysis anemia, renal failure, shock, and death. Many of us do not know the type of blood group we have. This case became very crucial when the individual suffered a calamity, such as accidents that caused many types of blood to come out. The patient's treatment was delayed, as the individual did not know what type of blood he had. Based on the results of the observation with the students, the principal, and teachers of Madrasah Aliyah NW Bagik Polak, it can be concluded that most students in this school do not know the blood type he has. This incident is the basis for our devotion to the community in this case students to check the blood group they have.
ENHANCED PERFORMANCE OF DYE-SENSITIZED SOLAR CELLS USING MELINJO PEEL (GNETUM GNEMON) DYE AS SENSITIZER Hardani, Hardani; Angraini, Lily Maysari
Indonesian Physical Review Vol 2, No 3 (2019)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/ipr.v2i3.28

Abstract

It has been successfully identified and characterized by dye Melinjo peel (Gnetum gnemon) as an active material for Dye Sensitized Solar Cells (DSSC). The sample is formed in the structure of a working pair of electrode sandwiches and opposing electrodes. The dye extraction process (Dye) of the melinjo was stirred for 1 hour and then left to stand for 24 hours but there were only differences in how to doping dye into TiO2.Dye-sensitized solar cell (DSSC) is one of the photochemical electrical cells consisting of a photoelectrode, dye, electrolyte, and counter electrode. The purpose of using dyes in the DSSC is to extend the absorption spectrum to visible light because visible light has about 96% energy from sunlight. This article presents some experimental data on the nature of absorbance and the conductivity of natural dyes extracted from the plant as an application in the DSSC. Absorbance test using Spectrophotometer UV Visible 1601 PC and electrical properties test using Elkahfi 100 / Meter I-V. DSSC fabrication has been done using dye extract of melinjo (Gnetum gnemon) with a variety of immersion technique of drops and soak. The results show that natural dyes from natural material extraction have an absorbance spectrum of 380-520 nm range and the greatest conductivity is owned by melinjo (Gnetum gnemon). From the results of the test using AM Simulator 1.5G (100 mW / cm2) diesel simulator, it was found that the volume of TiO2 precursors affected the performance of DSSC solar cells and the overall conversion efficiency was 0.03% for the melinjo (Gnetum gnemon) dye by drops technique and 0.009% for the melinjo (Gnetum gnemon) dye by soak technique.