cover
Contact Name
Adi Darmawan
Contact Email
adidarmawan@live.undip.ac.id
Phone
-
Journal Mail Official
jksa@live.undip.ac.id
Editorial Address
-
Location
Kota semarang,
Jawa tengah
INDONESIA
JURNAL KIMIA SAINS DAN APLIKASI
Published by Universitas Diponegoro
ISSN : 14108917     EISSN : 25979914     DOI : -
urnal Kimia Sains dan Aplikasi (p-ISSN: 1410-8917) and e-ISSN: 2597-9914) is published by Department of Chemistry, Diponegoro University. This journal is published four times per year and publishes research, review and short communication in field of Chemistry.
Arjuna Subject : -
Articles 789 Documents
Uji Pengaruh Aktivitas Ekstrak Daun Cempaka (Mickelia champaca. L) terhadap Pengendalian Jamur Phytophthora infestans Purwintasari, Susiana
Jurnal Kimia Sains dan Aplikasi Vol 2, No 3 (1999): Volume 2 Issue 3 Year 1999
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4109.255 KB) | DOI: 10.14710/jksa.2.3.78-83

Abstract

Dalam usaha untuk mencari fungisida alami yang aman terhadap lingkungan dan tanaman non sasaran, telah dilakukan penelitian pemanfaatan daun cempaka dalam pengendalian pertumbuhan populasi jamur Phytophthora infestans. Jamur Phytophthora infestans ini adalah jamur yang menyebabkan penyakit busuk daun (late blight) pada tanaman kentang (Solanum tuberosum). Ekstrak dikhlorometan daun cempaka dengan konsentrasi 0, 1, 2, 3, 4, dan 5 persen (b/v) diujikan terhadap pertumbuhan jamur Phytophthora infestans secara in vitro, data dianalisis dengan Rancangan Acak Lengkap (RAL) dengan enam perlakuan dan empat ulangan serta menunjukkan penghambatan menunjukkan bahwa ekstrak diklorometan sudah menunjukkan penghambatan pertumbuhan pada konsentrasi satu persen secara in vitro. Penghambatan pertumbuhan semakin kuat seiring dengan konsentrasi yang meningkat. Namun tidak berbeda secara nyata antara konsentrasi dua persen dan tiga persen. Pada konsentrasi lima persen jamur mengalami penghambatan pertumbuhan yang tertinggi (ditunjukkan oleh luas pertumbuhannnya yang paling kecil). Ekstrak daun cempaka menghambat jamur Phytophthora infestans secara in vitro namun belum bisa mematikannya
Electrocoating Polypyrrole on Gold-Wire Electrode as Potential Mediator Membrane Candidate for Anionic Surfactant Electrode Sensor Abdul Haris Watoni; Indra Noviandri; Muhammad Nurdin; La Ode Ahmad Nur Ramadhan
Jurnal Kimia Sains dan Aplikasi Vol 23, No 5 (2020): Volume 23 Issue 5 Year 2020
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4063.672 KB) | DOI: 10.14710/jksa.23.5.167-176

Abstract

The development of polypyrrole as a potential mediator membrane candidate for sodium dodecyl sulfate (SDS) sensor electrode has been investigated. The polypyrrole membrane was synthesized electrochemically from the pyrrole and coated at the surface of a 1.0 mm diameter of the gold-wire electrode. Electropolymerization of pyrrole and coating of the polypyrrole produced was performed by cyclic voltammetry technique in the electrochemical cell containing supporting electrolyte of 0.01 M NaClO4 with an optimum potential range of -0.9 V–1.0 V, the scanning rate of 100 mV/s, an electric current of 2 mA, and running of potential scanning of 10 cycles. By using the similar optimal parameters of cyclic voltammetry, electropolymerization of 0.01 M pyrrole solution containing 0.001 M SDS also produces a polypyrrole membrane coated at the gold-wire electrode surface. These coated electrodes have the potential response-ability toward DS- anions in the concentration range of 10-7 M–10-5 M with a limit of detection of 10-7 M and sensitivity of electrode of 9.9 mV/decade. This finding shows that the SDS solution’s role is as supporting electrolyte and also as a source of DS- dopant during the pyrrole electropolymerization processes. Dopants are trapped in the polymer membrane during the electrochemical formation of polypyrrole and role as ionophores for DS- anion in the analyte solution. A potential response to the electrode phenomena is excellent basic scientific information for further synthesis of conducting polymer and development of conducting polymer-coated wire electrode model, especially in the construction of ion-selective electrode (ISE) for the determination of anionic surfactants with those models.
Kitosan sebagai Bahan Dasar Drug Delivery: Studi Interaksi antara Segmen Dimer Kitosan dengan Dipeptida Ac-AD-NH2 dan Ac-PV-NH2 secara Komputasi AB-Initio Imelda F. Saragih; Parsaoran Siahaan
Jurnal Kimia Sains dan Aplikasi Vol 17, No 2 (2014): Volume 17 Issue 2 Year 2014
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (865.868 KB) | DOI: 10.14710/jksa.17.2.58-64

Abstract

Telah dilakukan penelitian tentang optimasi dan interaksi antara molekul dipeptida dan dimer kitosan. Penelitian ini bertujuan untuk mempelajari pembukaan pada junction antar sel yang dilakukan dengan cara memodulasi peptida penyusun khaderinnya. Junction antar sel tersusun atas khaderin-khaderin yang terikat pada membran sel atau disebut dengan istilah trans-membran. Peptida yang digunakan berasal dari sekuens ADT-6 (Ac-ADTPPV-NH2) yaitu Ac-AD-NH2 dan Ac-PV-NH2. Penelitian ini dilakukan dengan metode kuantum ab initio pada tingkat teori dan basis set HF/6-31 G(d,p). Hasil penelitian menunjukkan energi potensial interaksi yang lebih stabil yaitu interaksi dimer kitosan dengan Ac-AD-NH2 konfigurasi 1 sebesar -78,1168 kJ mol-1 Ǻ sedangkan interaksi dimer kitosan dengan Ac-AD-NH2 konfigurasi 2 sebesar -68,6297 kJ mol-1. Segmen dimer kitosan dengan Ac-PV-NH2 konfigurasi 1 yang memiliki energi potensial interaksi sebesar -21,6289 kJ mol-1 sedangkan segmen dimer kitosan dengan Ac-PV-NH2 konfigurasi 2 yang memiliki energi potensial interaksi sebesar -57,6373 kJ mol-1. Kesimpulan adalah interaksi yang lebih stabil antara segmen dimer kitosan dengan peptida Ac-AD-NH2 dan Ac-PV-NH2 terjadi pada konfigurasi 1 dan 2. Aplikasi ke depannya, energi interaksi ini dapat digunakan untuk memprediksikan pelepasan peptida dari kitosan.
Pengaruh Konsentrasi Ca2+ dan (PO4)3- pada Pembentukan Hidroksiapatit di dalam Matriks Selulosa Bakterial Windarti, Tri; Astuti, Yayuk
Jurnal Kimia Sains dan Aplikasi Vol 9, No 3 (2006): Volume 9 Issue 3 Year 2006
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (286.55 KB) | DOI: 10.14710/jksa.9.3.60-64

Abstract

Pembentukan hidroksiapatit Ca10(PO4)6(OH)2 dalam matriks selulosa bakterial dilakukan dengan cara merendam selulosa bakterial dalam larutan CaCl2 selama 18 jam, dilanjutkan dengan merendam dalam larutan KH2PO4 selama 18 jam pada pH 9. Perendaman tersebut dilakukan dengan berbagai variasi konsentrasi Ca2+ dan PO42-. Kadar kalsium yang terdeposit dalam selulosa bakterial dianalisis dengan AAS. Kadar fosfat dianalisis dengan Stannous Chloride methode dan untuk mengetahui apakah kalsium fosfat yang terdeposit membentuk struktur hidroksiapatit, dilakukan analisis dengan difraksi sinar X. Difraktogram sinar X menunjukkan telah terbentuk struktur hidroksiapatit dalam matriks selulosa bakterial dan rasio ideal C/P hidroksiapatit sebesar 1,676 terjadi pada perbandingan Ca2+: PO43- = 125 : 25.
Natural Zeolite Modification using Dithizone and Its Application as Adsorbent of Cu(II) Agnidian Setyorini; Suhartana Suhartana; Pardoyo Pardoyo
Jurnal Kimia Sains dan Aplikasi Vol 21, No 2 (2018): Volume 21 Issue 2 Year 2018
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (485.808 KB) | DOI: 10.14710/jksa.21.2.98-101

Abstract

Activation of zeolites with dithizone by reflux method was carried out at 50°C for 6 hours and the results were analyzed using FTIR and GSA. Furthermore, the modified zeolite dithizone was used to adsorb Cu2+ metal ions on variations of adsorption time of 5, 10, 15, 30 and 60 min, variation of adsorption pH 2, 3, 4, 5 and 6 as well as variations in concentrations of 250, 500, 1000, 1500 and 2000 ppm. The results showed that there was a vibrational shift and a new peak emerged on the FTIR zeolite activation spectrum and modified zeolite indicating that the dithizone was present in the zeolite. GSA analysis results show that the surface area of activated zeolite is greater than natural zeolite ie 4,205 m2/g and 5,459 m2/g respectively, whereas dithizone-zeolite had a much smaller surface area of 0.925 m2/g. The selectivity of adsorption of activated zeolite to Cu(II) was greater than of dithizone-zeolite. The optimum adsorption contact time was 10 min for dithizone-zeolite and 30 min for activated zeolite. The optimum adsorption pH was at pH 5 for both adsorbents, as well as the optimum adsorption concentration at 250 ppm for both adsorbents.
Fabrikasi Dye-Sensitized Solar Cell Menggunakan Fotosensitizer Ekstrak Bunga Rosela (Hibiscus sabdariffa L) dan Elektrolit Padat Berbasis PEG (Polyethylene Glycol) Mustaqim Mustaqim; Abdul Haris; Gunawan Gunawan
Jurnal Kimia Sains dan Aplikasi Vol 20, No 2 (2017): Volume 20 Issue 2 Year 2017
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (686.554 KB) | DOI: 10.14710/jksa.20.2.62-67

Abstract

Telah dibuat Dye-Sensitized Solar Cell (DSSC) menggunakan dye alami ekstrak bunga Rosela dan elektrolit padat berbasis PEG yang mengandung pasangan redoks I-/I3-. Dye-Sensitized Solar Cell dikonstruksi dengan struktur sandwich menggunakan fotoelektrode TiO2 yang dideposisi pada kaca Transparent Conductive Oxide (TCO) dengan elektrode lawan grafit. Dye ekstrak bunga rosela dimaserasi dalam campuran metanol, asam asetat dan air selama 24 jam dan digunakan untuk perendaman fotoelektroda TiO2 selama 1 jam dan 24 jam. Dye dikarakterisasi menggunakan FT-IR dan UV-Vis dan TiO2 menggunakan X-RD dan SEM. Kinerja sel surya diuji di bawah sinar matahari selama 1 jam pada jam 12:15-13:15 dengan suhu atmosfir 39°C. Spektra UV-Vis dan FT-IR larutan dye menunjukkan adanya kandungan antosianin pada panjang gelombang maksimum 530 nm dan diperkuat dengan munculnya gugus hidroksil, benzena dan karbonil pada serapan inframerah. Hasil karakterisasi XRD dan SEM menunjukkan TiO2 memiliki fase kristalin anatase dengan ukuran kristal sebesar 41,56 nm dan morfologi permukaan dengan ukuran rongga sekitar 94,11nm dan ketebalan penampang lintang sekitar 39,05. Dye-Sensitized Solar Cell yang dibuat menghasilkan potensial rangkaian terbuka (VOC) sebesar 0,124 V dan 0,127 V , arus rangkaian pendek (ISC) 0,084 mA dan 1,275 mA, serta efisiensi 0,00098 % dan 0,01883 % masing-masing untuk perendaman fotoelektroda TiO2 1 jam dan 24 jam.
Antibacterial Activity of Cinnamic Acid - Chitosan Encapsulation Nur Amaliyah; Purbowatiningrum Ria Sarjono; Ngadiwiyana Ngadiwiyana; Ismiyarto Ismiyarto
Jurnal Kimia Sains dan Aplikasi Vol 21, No 1 (2018): Volume 21 Issue 1 Year 2018
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (633.526 KB) | DOI: 10.14710/jksa.21.1.8-12

Abstract

The biggest cinnamon bark is cinnamic acid. The inhibitory activity of bacterial growth of S. aureus and E. coli and its abundance in nature becomes the superiority of cinnamic acid as antibacterial. However, the use of cinnamic acid as an antibacterial is still less than optimal because of low solubility in water. One of the latest technologies to address the problem is encapsulation in nanometer size. Encapsulation of cinnamic acid using chitosan nanoparticles as an encapsulation material was shown to increase the activity of cinnamic acid as antibacterial by protecting the active compound, as well as increasing its solubility in water through chitosan-TPP modification. Emulsion formation was performed using Corning LSE Compact at 6,000 rpm for 30 minutes. The formation of chitosan nanoparticles as encapsulation material was done using freeze dryer with freeze drying method. Chitosan was obtained from shrimp chitin with Deacetylation Degree (% DD) of 85.98%. The synthesis of chitosan nanoparticles yielded an average particle size of 330 nm with a percentage volume of 29.9% and 79.1% with an average size of 5570 nm. The morphological form of nanometer-sized chitosan was smaller and uniform than that of chitosan morphology. Encapsulation efficiency value of 67.304% makes cinnamic acid has higher activity inhibition of bacterial growth than pure cinnamic acid and chitosan nanoparticles. 
Pemucatan Minyak Sawit dengan Lempung Terpilar Taslimah, Taslimah; Sriyanti, Sriyanti
Jurnal Kimia Sains dan Aplikasi Vol 8, No 1 (2005): Volume 8 Issue 1 Year 2005
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (407.518 KB) | DOI: 10.14710/jksa.8.1.17-22

Abstract

Pemilaran lempung hasil fraksinasi bentonit dengan tetrametilammonium klorida telah dilakukan, hasilyang diperoleh diaplikasikan untuk pemucatan minyak sawit guna menentukan daya pemucatannya sertamenentukan jenis komponen minyak yang dapat terserap oleh adsorben. Pemilaran dilakukan dengan mengubahlempung alam menjadi lempung-TMA. Pemucatan dilakukan dengan mendispersikan lempung-TMA ke dalamminyak sawit kemudian dipanaskan sambil diaduk dan disaring. Pemucatan dilakukan pada kisaran suhu 50 -120o C, pemilar 0,5 -2,5% dan kisaran waktu kontak 0-150 menit. Filtrat yang diperoleh diukur absorbansinya denganspektrofotometer UV-Vis untuk menentukan daya pemucatannya dan jenis komponen minyak yang terserap,sedang residunya dikarakterisasi dengan spektrofotometer infra merah. Disimpulakan bahawa kondisi optimumpemucatan dicapai pada suhu 95oC, Waktu kontak 2 jam, konsentrasi awal TMACl 1 % dengan daya pemucatanlempung-TMA 97,69 %. Komponen minyak sawit yang diserap adalah  dan  karoten, tokoferol dan asam lemakbebas.
Synthesis, Characterization of Cu, S doped TiO2 and Its Photocatalytic Activity for Degradation of Remazol Black B Abdul Haris; Gunawan Gunawan; Didik Setiyo Widodo; Rahmad Nuryanto; Retno Ariadi Lusiana; Mei Viantikasari
Jurnal Kimia Sains dan Aplikasi Vol 22, No 2 (2019): Volume 22 Issue 2 Year 2019
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2623.307 KB) | DOI: 10.14710/jksa.22.2.47-51

Abstract

Copper and sulfur modified TiO2(Cu-S-TiO2) photocatalyst was successfully synthesized using TiCl4, Cu(NO3)2.3H2O and H2SO4 as precursors by the sol-gel method andcalcination at 450°C for 4 hours. The synthesized photocatalyst was characterized by X-Ray Diffraction (XRD), Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS), Diffuse Reflectance Spectroscopy (DRS), Brunauer Emmett Teller (BET) method. The XRD results showed that the Cu-S-TiO2 photocatalyst had an anatase phase with a crystal grain size of 17.54 nm. However, the SEM image of the modified TiO2 showed inhomogeneous phase due to the crystal clustering of imperfect homogenization during the synthesis and sintering processes. The patterns of EDSof Cu-S-TiO2depicted the elements of Ti, O, Cu and S with doping of Cu and S c.a. 7 and 1%, respectively. Analysis using DRS UV-Vis showed Cu-S-TiO2 was able to shift the absorption of the TiO2 photocatalyst wavelength to the visible region with a band energy gap of 1.9 eV. The BET analysis results showed that the specific surface area (SBET), pore volume (Vp) and average pore volume radius (Dp) were measured from large Cu-S-TiO2, therefore Cu-S-TiO2 had good physicochemical and photocatalytic properties. The photocatalytic activity of 0.1 g Cu-S-TiO2 with 15 Watt tungsten light irradiation for 4 h was able to degrade 50 mL remazol black B 10 mg/L c.a. 92.60 %.
Studi Interaksi antara Segmen Dimer Kitin dengan Molekul Kalsium Fosfat Menggunakan Metode ab Initio Ade Rahmani; Tri Windarti; Parsaoran Siahaan
Jurnal Kimia Sains dan Aplikasi Vol 14, No 2 (2011): Volume 14 Issue 2 Year 2011
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (579.965 KB) | DOI: 10.14710/jksa.14.2.43-47

Abstract

Chitin adalah polisakarida alami potensial yang digunakan sebagai adsorben. Salah satu contohnya adalah penggunaan kitin sebagai adsorben dalam pembuatan komposit kitin-kalsium fosfat. Penelitian ini merupakan penelitian teoritis dengan metode kimia kuantum ab initio pada tingkat teori dan himpunan dasar HF/6-31G(d,p) untuk memprediksi struktur dan interaksi yang terjadi dalam pembentukan kitin-kalsium fosfat. Hasil perhitungan menunjukkan interaksi antara kitin dimer dan kalsium fosfat. Energi interaksi antara kitin dimer dengan Ca+ adalah -359,837 kJ/mol pada jarak 2,25 Å. Interaksi PO43- dengan kitin dimer memiliki energi -274,770 kJ/mol pada jarak 3,20 Å. Interaksi CaPO4- dengan kitin dimer memiliki energi -64,058 kJ/mol pada jarak 2,50 Å. Untuk konfigurasi (kitin dimer... CaPO4-)II dan konfigurasi (kitin dimer... CaPO4-)II sebesar -21.475 kJ/mol pada jarak 3,85 Å. Energi interaksi antara kitin dimer dan Ca3(PO4)2 adalah -284.123 kJ/mol pada jarak 2,55 Å. Dan interaksi antara kitin dimer dengan (Ca5(PO4)3OH) adalah -105,200 kJ/mol pada jarak 2,50 Å.

Page 7 of 79 | Total Record : 789


Filter by Year

1998 2025


Filter By Issues
All Issue Vol 28, No 7 (2025): Volume 28 Issue 7 Year 2025 Vol 28, No 6 (2025): Volume 28 Issue 6 Year 2025 Vol 28, No 5 (2025): Volume 28 Issue 5 Year 2025 Vol 28, No 4 (2025): Volume 28 Issue 4 Year 2025 Vol 28, No 3 (2025): Volume 28 Issue 3 Year 2025 Vol 28, No 2 (2025): Volume 28 Issue 2 Year 2025 Vol 28, No 1 (2025): Volume 28 Issue 1 Year 2025 Vol 27, No 12 (2024): Volume 27 Issue 12 Year 2024 Vol 27, No 11 (2024): Volume 27 Issue 11 Year 2024 Vol 27, No 10 (2024): Volume 27 Issue 10 Year 2024 Vol 27, No 9 (2024): Volume 27 Issue 9 Year 2024 Vol 27, No 8 (2024): Volume 27 Issue 8 Year 2024 Vol 27, No 7 (2024): Volume 27 Issue 7 Year 2024 Vol 27, No 6 (2024): Volume 27 Issue 6 Year 2024 Vol 27, No 5 (2024): Volume 27 Issue 5 Year 2024 Vol 27, No 4 (2024): Volume 27 Issue 4 Year 2024 Vol 27, No 3 (2024): Volume 27 Issue 3 Year 2024 Vol 27, No 2 (2024): Volume 27 Issue 2 Year 2024 Vol 27, No 1 (2024): Volume 27 Issue 1 Year 2024 Vol 26, No 12 (2023): Volume 26 Issue 12 Year 2023 Vol 26, No 11 (2023): Volume 26 Issue 11 Year 2023 Vol 26, No 10 (2023): Volume 26 Issue 10 Year 2023 Vol 26, No 9 (2023): Volume 26 Issue 9 Year 2023 Vol 26, No 8 (2023): Volume 26 Issue 8 Year 2023 Vol 26, No 7 (2023): Volume 26 Issue 7 Year 2023 Vol 26, No 6 (2023): Volume 26 Issue 6 Year 2023 Vol 26, No 5 (2023): Volume 26 Issue 5 Year 2023 Vol 26, No 4 (2023): Volume 26 Issue 4 Year 2023 Vol 26, No 3 (2023): Volume 26 Issue 3 Year 2023 Vol 26, No 2 (2023): Volume 26 Issue 2 Year 2023 Vol 26, No 1 (2023): Volume 26 Issue 1 Year 2023 Vol 25, No 12 (2022): Volume 25 Issue 12 Year 2022 Vol 25, No 11 (2022): Volume 25 Issue 11 Year 2022 Vol 25, No 10 (2022): Volume 25 Issue 10 Year 2022 Vol 25, No 9 (2022): Volume 25 Issue 9 Year 2022 Vol 25, No 8 (2022): Volume 25 Issue 8 Year 2022 Vol 25, No 7 (2022): Volume 25 Issue 7 Year 2022 Vol 25, No 6 (2022): Volume 25 Issue 6 Year 2022 Vol 25, No 5 (2022): Volume 25 Issue 5 Year 2022 Vol 25, No 4 (2022): Volume 25 Issue 4 Year 2022 Vol 25, No 3 (2022): Volume 25 Issue 3 Year 2022 Vol 25, No 2 (2022): Volume 25 Issue 2 Year 2022 Vol 25, No 1 (2022): Volume 25 Issue 1 Year 2022 Vol 24, No 7 (2021): Volume 24 Issue 7 Year 2021 Vol 24, No 6 (2021): Volume 24 Issue 6 Year 2021 Vol 24, No 5 (2021): Volume 24 Issue 5 Year 2021 Vol 24, No 4 (2021): Volume 24 Issue 4 Year 2021 Vol 24, No 3 (2021): Volume 24 Issue 3 Year 2021 Vol 24, No 2 (2021): Volume 24 Issue 2 Year 2021 Vol 24, No 1 (2021): Volume 24 Issue 1 Year 2021 Vol 23, No 12 (2020): Volume 23 Issue 12 Year 2020 Vol 23, No 11 (2020): Volume 23 Issue 11 Year 2020 Vol 23, No 10 (2020): Volume 23 Issue 10 Year 2020 Vol 23, No 9 (2020): Volume 23 Issue 9 Year 2020 Vol 23, No 8 (2020): Volume 23 Issue 8 Year 2020 Vol 23, No 7 (2020): Volume 23 Issue 7 Year 2020 Vol 23, No 6 (2020): Volume 23 Issue 6 Year 2020 Vol 23, No 5 (2020): Volume 23 Issue 5 Year 2020 Vol 23, No 4 (2020): Volume 23 Issue 4 Year 2020 Vol 23, No 3 (2020): Volume 23 Issue 3 Year 2020 Vol 23, No 2 (2020): Volume 23 Issue 2 Year 2020 Vol 23, No 1 (2020): Volume 23 Issue 1 Year 2020 Vol 22, No 6 (2019): Volume 22 Issue 6 Year 2019 Vol 22, No 5 (2019): Volume 22 Issue 5 Year 2019 Vol 22, No 4 (2019): Volume 22 Issue 4 Year 2019 Vol 22, No 3 (2019): Volume 22 Issue 3 Year 2019 Vol 22, No 2 (2019): Volume 22 Issue 2 Year 2019 Vol 22, No 1 (2019): volume 22 Issue 1 Year 2019 Vol 21, No 4 (2018): volume 21 Issue 4 Year 2018 Vol 21, No 3 (2018): Volume 21 Issue 3 Year 2018 Vol 21, No 2 (2018): Volume 21 Issue 2 Year 2018 Vol 21, No 1 (2018): Volume 21 Issue 1 Year 2018 Vol 20, No 3 (2017): Volume 20 Issue 3 Year 2017 Vol 20, No 2 (2017): Volume 20 Issue 2 Year 2017 Vol 20, No 1 (2017): Volume 20 Issue 1 Year 2017 Vol 19, No 3 (2016): Volume 19 Issue 3 Year 2016 Vol 19, No 2 (2016): Volume 19 Issue 2 Year 2016 Vol 19, No 1 (2016): Volume 19 Issue 1 Year 2016 Vol 18, No 3 (2015): Volume 18 Issue 3 Year 2015 Vol 18, No 2 (2015): Volume 18 Issue 2 Year 2015 Vol 18, No 1 (2015): Volume 18 Issue 1 Year 2015 Vol 17, No 3 (2014): Volume 17 Issue 3 Year 2014 Vol 17, No 2 (2014): Volume 17 Issue 2 Year 2014 Vol 17, No 1 (2014): Volume 17 Issue 1 Year 2014 Vol 16, No 3 (2013): Volume 16 Issue 3 Year 2013 Vol 16, No 2 (2013): Volume 16 Issue 2 Year 2013 Vol 16, No 1 (2013): Volume 16 Issue 1 Year 2013 Vol 15, No 3 (2012): Volume 15 Issue 3 Year 2012 Vol 15, No 2 (2012): Volume 15 Issue 2 Year 2012 Vol 15, No 1 (2012): Volume 15 Issue 1 Year 2012 Vol 14, No 3 (2011): Volume 14 Issue 3 Year 2011 Vol 14, No 2 (2011): Volume 14 Issue 2 Year 2011 Vol 14, No 1 (2011): Volume 14 issue 1 Year 2011 Vol 13, No 3 (2010): Volume 13 Issue 3 Year 2010 Vol 13, No 2 (2010): Volume 13 Issue 2 Year 2010 Vol 13, No 1 (2010): Volume 13 Issue 1 Year 2010 Vol 12, No 3 (2009): Volume 12 Issue 3 Year 2009 Vol 12, No 2 (2009): Volume 12 Issue 2 Year 2009 Vol 12, No 1 (2009): Volume 12 Issue 1 Year 2009 Vol 11, No 3 (2008): Volume 11 Issue 3 Year 2008 Vol 11, No 2 (2008): Volume 11 Issue 2 Year 2008 Vol 11, No 1 (2008): Volume 11 Issue 1 Year 2008 Vol 10, No 3 (2007): Volume 10 Issue 3 Year 2007 Vol 10, No 2 (2007): Volume 10 Issue 2 Year 2007 Vol 10, No 1 (2007): Volume 10 Issue 1 Year 2007 Vol 9, No 3 (2006): Volume 9 Issue 3 Year 2006 Vol 9, No 2 (2006): Volume 9 Issue 2 Year 2006 Vol 9, No 1 (2006): Volume 9 Issue 1 Year 2006 Vol 8, No 3 (2005): Volume 8 Issue 3 Year 2005 Vol 8, No 2 (2005): Volume 8 Issue 2 Year 2005 Vol 8, No 1 (2005): Volume 8 Issue 1 Year 2005 Vol 7, No 3 (2004): Volume 7 Issue 3 Year 2004 Vol 7, No 2 (2004): Volume 7 Issue 2 Year 2004 Vol 7, No 1 (2004): Volume 7 Issue 1 Year 2004 Vol 6, No 3 (2003): Volume 6 Issue 3 Year 2003 Vol 6, No 2 (2003): Volume 6 Issue 2 Year 2003 Vol 6, No 1 (2003): Volume 6 Issue 1 Year 2003 Vol 5, No 3 (2002): Volume 5 Issue 3 Year 2002 Vol 5, No 2 (2002): Volume 5 Issue 2 Year 2002 Vol 5, No 1 (2002): Volume 5 Issue 1 Year 2002 Vol 3, No 3 (2000): Volume 3 Issue 3 Year 2000 Vol 3, No 2 (2000): Volume 3 Issue 2 Year 2000 Vol 3, No 1 (2000): Volume 3 Issue 1 Year 2000 Vol 2, No 4 (1999): Volume 2 Issue 4 Year 1999 Vol 2, No 3 (1999): Volume 2 Issue 3 Year 1999 Vol 2, No 2 (1999): Volume 2 Issue 2 Year 1999 Vol 2, No 1 (1999): Volume 2 Issue 1 Year 1999 Vol 1, No 1 (1998): Volume 1 Issue 1 Year 1998 More Issue