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Perangkat Soal Berbasis Konflik Kognitif Zulkarnain, Iskandar
Jurnal Pendidikan Matematika Vol 1, No 1 (2013)
Publisher : Jurnal Pendidikan Matematika

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Abstract

Konflik kognitif adalah kesadaran individu tentang adanya ketidaksesuaian antara struktur kognitif mereka dengan informasi yang mereka hadapi. Konflik pada siswa dapat muncul secara  alami dan dapat juga direncanakan secara bermakna oleh guru, yang ditujukan untuk mengatasi kesalahan konsep siswa.  Memunculkan konflik kognitif dapat dilakukan diantaranya dengan menyajikan data ganjil. Dalam pembelajaran matematika, data ganjil dapat berupa soal-soal dengan struktur tidak lengkap (ill-structure).  Makalah ini mengetengahkan beberapa materi dalam topik aljabar  kelas sepuluh  yang berpotensi memunculkan  konflik kognitif disertai  beberapa contoh soalnya. Contoh-contoh soal ini dapat dijadikan  sebagai instrumen guna mengukur kemampuan pemahaman relasional
Geochemical Signature of Mesozoic Volcanic and Granitic Rocks in Madina Regency Area, North Sumatra, Indonesia, and its Tectonic Implication Zulkarnain, Iskandar
Indonesian Journal on Geoscience Vol 4, No 2 (2009)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (894.092 KB) | DOI: 10.17014/ijog.v4i2.74

Abstract

http://dx.doi.org/10.17014/ijog.vol4no2.20094Five samples consisting of two Permian-Triassic basalts, two Triassic-Jurassic granitic rocks, and a Miocene andesite were collected from the Madina Regency area in North Sumatra that is regionally situated on the West Sumatra Block. Previous authors have proposed three different scenarios for the geological setting of West Sumatra Permian Plutonic-Volcanic Belt, namely an island-arc, subduction related continental margin arc, and continental break-up. Petrographic analysis of the Mesozoic basaltic samples indicates that they are island-arcs in origin; however their trace element spider diagram patterns (Rock/MORB ratio) also show the character of back-arc marginal basin, besides the island-arc. Furthermore, their REE spider diagram patterns (Rock/ Chondrite ratio) clearly reveal that they were actually generated in a back-arc marginal basin tectonic setting. Meanwhile, the two Mesozoic granitic rocks and the Miocene andesite reflect the character of an active continental margin. Their spider diagram patterns show a significant enrichment on incompat- ible elements, usually derived from fluids of the subducted slab beneath the subduction zone. The high enrichment on Th makes their plots on Ta/Yb versus Th/Yb diagram are shifted to outside the active continental margin field. Although the volcanic-plutonic products represent different ages, their La/Ce ratio leads to a probability that they have been derived from the same magma sources. This study offers another different scenario for the geological setting of West Sumatra Permian Plutonic-Volcanic Belt, where the magmatic activities started in a back-arc marginal basin tectonic setting during the Permian-Triassic time and changed to an active continental margin during Triassic to Miocene. The data are collected through petrographic and chemical analyses for major, trace, and REE includ- ing literature studies.  
Leptospirosis at Dr. Cipto Mangunkusumo and Persahabatan Hospitat Review of 104 cases Zulkarnain, Iskandar
Medical Journal of Indonesia Vol 9, No 4 (2000): October-December
Publisher : Faculty of Medicine Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (518.424 KB) | DOI: 10.13181/mji.v9i4.625

Abstract

[no abstract available]
Menyingkap Arena Kuasa Simbolik Islam Ideologis (Studi Lapangan di Yogyakarta) Zulkarnain, Iskandar
SOSIOLOGI Vol 1, No 1 (2009): Jurnal Society Mei 2009
Publisher : Universitas Bangka Belitung

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Abstract

The researcher discusses the symbolical power field of Hizbut Tahrir Indonesia (HTI) and Majelis Mujahidin Indonesia (MMI) which fight the strategic arena as the political tools to achieve the substantive power after the order regime. HTI and MMI as ideological Islam organizations which struggle Islamic Syariah formalization in state and nation order can be analyzed using Pierre Bordieu conceptual framework. It consists of three key concepts as follow: habitus, champ and symbolic power. Those key concepts are formulated in political dakwah and jihad which invite personnel’s or among members to change an old paradigm to a new paradigm (fully syariah) to create a uniformity and habitus reproductions.Field of struggles are directed to dominate political fields which institutional based, community based, and governmental institutions through an economic capital hegemony, a culture, a social and symbolic powers. The economic capital can be means of production possession, materials, and money changes as inherited investment in a long period. Culture capitals are accumulated into intellectual hegemony, discourses, and argumentations to get social positions. The culture capitals are directed to social networks (cooperation’s) ownership and authorities in relation to an other stakeholder or power holders. Symbolic capitals is the accumulation of economic, culture and social capitals which deal with a prestige, status, authority and legitimacy from other stakeholders. A symbolic capital hegemony is the centre of field of struggles domination and requirements to get symbolic powers.
Petrogenesis batuan vulkanik daerah tambang emas Lebong Tandai, Provinsi Bengkulu, berdasarkan karakter geokimianya ZulkarnaIn, Iskandar
Indonesian Journal on Geoscience Vol 3, No 2 (2008)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (941.7 KB) | DOI: 10.17014/ijog.v3i2.48

Abstract

http://dx.doi.org/10.17014/ijog.vol3no2.20081Lebong Tandai is a village in the Napal Putih Sub-regency, North Bengkulu Regency, that can be accessed only through the local people train called “molek”. The area is well known as a gold mine since the Dutch time. Volcanic rocks in the area belong to the Hulusimpang Formation that are dominated by andesitic rocks with small amount of dacite and basalt. They show an affinity as a transition between calc-alkaline and tholeiite. Its trace elements and REE patterns show that they are derived from “magma one”, one of the two magma sources producing volcanic rocks in Bengkulu. “Magma one” is derived from a magma source with adakitic composition due to the most primitive sample among the “magma one” samples. The Lebong Tandai magma activity has occurred since more than 30 million years ago in a back-arc side tectonical environment, and they were enriched on incompatible elements during an upper crust penetration. The occurrence of gold mineralization in this area indicates that the “magma one” is a gold bearing mineralized magma in this region. It seems to be reasonable when it is corresponded with an investigation result reported from the Phillippine that adakitic rocks contain higher gold concentration than calc-alkaline rocks. This paper is written using a geochemical approach based on major elements, trace elements and rare earth elements (REE) that are plotted into general and specific classifications in a petrological discussion.  
Geochemical Evidence of Island-Arc Origin for Sumatra Island; A New Perspective based on Volcanic Rocks in Lampung Province, Indonesia Zulkarnain, Iskandar
Indonesian Journal on Geoscience Vol 6, No 4 (2011)
Publisher : Geological Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2460.316 KB) | DOI: 10.17014/ijog.v6i4.128

Abstract

DOI: 10.17014/ijog.v6i4.128Since decades, Sumatra Island is considered as the Eurasia continental margin where the Indian Ocean plate has been subducted oblique beneath the continental plate of Sumatra. But, the occurrences of volcanic rocks in almost all areas of Lampung Province in the southernmost of Sumatra Island, as the presence of the Quaternary Tanggamus Volcano in the western part of the province together with the Quaternary Rajabasa Volcano in the eastern area cannot be justified using the consideration. Spider diagrams of trace and rare earth elements of volcanic rocks from the western and eastern areas of the province reveal that the rocks come from three different tectonic settings, namely island-arc, active continental margin (ACM), and intra continental plate. All basalt and one dacite of western volcanic rocks show a character of island-arc origin, while the eastern volcanic rocks are reflecting characters of ACM and intra continental plate. Plot of the rocks in the diagram of Ta/Yb versus Ce/P and in Ta/Yb versus Th/Yb confirmed the tectonic environments and specifically classify the intra continental plate into Within Plate Volcanic Zone (WPVZ). The island-arc group is characterized by Ta/Yb ratio of less than 2.0 and Ce/P less than 1.8. The ACM group is recognized having Ta/Yb ratio between 2 and 4 with Ce/P more 1.8, while the WPVZ group is defined as a group having Ta/Yb more than 6 and Ce/P more than 1.0. The result indicates that the western part of Sumatra is an island-arc fragment and the eastern part belongs to the Eurasia continental margin. The concentration of volcanics having ACM character from areas around the Sumatra Fault System to the east indicates that the collision zone between the Sumatra island-arc fragments with the Eurasia continental margin is probably located along the SFS. More statistical data is still needed from other Sumatra volcanics to confirm this conclusion.
PEMBERDAYAAN MASYARAKAT MELALUI PEMETAAN PARTISIPATIF UNTUK IDENTIFIKASI DAN PEMETAAN WILAYAH ADAT SUKU LOM DI KECAMATAN BELINYU KABUPATEN BANGKA Zulkarnain, Iskandar
Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung Vol 1, No 1 (2014):
Publisher : Universitas Bangka Belitung

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Abstract

Pemberdayaan masyarakat adat Suku Lom di Kecamatan Belinyu Kabupaten Bangka Provinsi Kepulauan Bangka Belitung bertujuan untuk mengidentifikasi permasalahan sosial, potensi sumber daya alam dan kearifan lokal yang masih terjaga, merencanakan dan mengembangkan potensi sumber daya alam dan kearifan lokal yang dimiliki masyarakat adat untuk kepentingan ilmu pengetahuan dan kesejahteraan, dan memetakan tata ruang wilayah adat sebagai upaya mendorong penguatan kelembagaan adat. Metode pemberdayaan yang digunakan adalah pemetan sosial dan pemetaan partisipatif. Melalui kedua pendekatan diharapkan dapat menempatkan masyarakat sebagai pelaku pemetaan wilayahnya, sekaligus akan menjadi penentu perencanaan pengembangan wilayah mereka sendiri.Hasil yang dicapai berupa teridentifikasinya masalah-masalah yang sedang dihadapi berupa ketidaktersediaan legalitas hukum atau pengakuan keberadaan wilayah hutan adat, menyeruaknya kepentingan ekonomi, dan persoalan kesetaraan hidup dengan masyarakat sekitar. Identifikasi potensi sumber daya yang meliputi ritual, mitos, potensi hutan adat, flora dan fauna, tumbuhan obat tradisional, dan potensi budaya dengan terdapatnya artefak peninggalan nenek moyang. Artefak berupa situs sejarah, kuburan adat, air terjun keramat, dan hutan adat yang disakralkan berpotensi untuk dikembangkan menjadi desa adat sebagai kawasan destinasi wisata alam dan budaya di masa mendatang. Pencapaian itu semua bergantung kepada dinamika peran dan fungsi kelembagaan adat komunitas Suku Lom dalam mengerahkan kekuatan modal sosialnya.  Kata Kunci: Pemetaan partisipatif, sumber daya alam, kearifan lokal, modal sosial
Short course treatment of Typhoid fever with 400 mg fleroxacin OD a preliminary report Nelwan, R.H.H.; Setiawan, Budi; Gunawan, Julianti; Hendarto, Hendarto; Zulkarnain, Iskandar
Medical Journal of Indonesia Vol 7 (1998): Supplement 1
Publisher : Faculty of Medicine Universitas Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (114.716 KB) | DOI: 10.13181/mji.v7iSupp1.1143

Abstract

[no abstract available]
Penatalaksanaan Kandidiasis Mukokutan pada Bayi Kusumaputra, Bagus Haryo; Zulkarnain, Iskandar
Berkala Ilmu Kesehatan Kulit dan Kelamin Vol 26, No 2 (2014): BIKKK AGUSTUS 2014
Publisher : Faculty Of Medicine Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (489.015 KB) | DOI: 10.20473/bikkk.V26.2.2014.1-7

Abstract

Latar belakang: Bayi memiliki risiko lebih tinggi terhadap cedera kulit, absorbsi kulit, dan infeksi kulit. Kandidiasis mukokutan pada bayi dapat berupainfeksi yang paling umum seperti kandidiasis oral dan ruam popok, sampai berupa infeksi serius yang berpotensi menjadi infeksi sistemik, seperti kandidiasis kongenital dan dermatitis fungal invasif. Infeksi mukokutan pada bayi prematur dapat menjadi permulaan infeksi sistemik sehingga membutuhkan perhatian khusus.Tujuan: Memberikan pengetahuan mengenai kandidiasis mukokutan pada bayi yang meliputi etiopatogenesis dan manifestasi klinis, sehingga diharapkan dapat memberikan pengobatan yang lebih baik. Telaah kepustakaan: Lokasi utama kontak dengan kandida pada bayi baru lahir yang tersering adalah mukokutan, termasuk saluran pencernaan, pernapasan, dan kulit. Faktor predisposisi kandidiasis meliputi faktor mekanik, nutrisi, perubahan fisiologis, penyakit sistemik, dan faktor iatrogenik. Diagnosis kandidiasis mukokutan berdasarkan pemeriksaan klinis ditunjang dengan pemeriksaan mikroskop langsung dan kultur. Pengobatan kandidiasis mukokutan pada bayi meliputi pengobatan topikal dan sistemik. Golongan antijamur topikal yang digunakan pada kandidiasis antara lain imidazol dan poliene, sedangkan pengobatan antijamur sistemik meliputi flukonazol dan amfoterisin B. Simpulan: Pengobatan kandidiasis mukokutan pada bayi sebagian besar menggunakan obat topikal. Pengobatan sistemik digunakan bila terapi topikal gagal atau pada infeksi kandida yang terdapat gejala sistemik.Kata kunci: kandidiasis mukokutan, bayi, tatalaksana.
Increasing of Skin pH level in Childhood Atopic Dermatitis Primadiarti, Pedia; Rahmadewi, Rahmadewi; Zulkarnain, Iskandar
Berkala Ilmu Kesehatan Kulit dan Kelamin Vol 26, No 3 (2014): BIKKK DESEMBER 2014
Publisher : Faculty Of Medicine Airlangga University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (117.14 KB) | DOI: 10.20473/bikkk.V26.3.2014.1-7

Abstract

Background: Atopic dermatitis (AD) has multifactorial etiologies such as genetic, environment, and imbalance of immunology basis.  AD is marked with skin barrier dysfunction, whichcharacterized by fillagrin mutation. Fillagrin itself has an important role in skin hydration and pH adjustment, so that its functional nor amount defect will lead to hydration and pH adjustment impair, as well as shown in AD phenotype. Purpose: To evaluatethe difference of skin pH in AD (lesional and non lesional area) and normal children. Methods:  Phase 1 study was descriptive observational study, to determinenormal skin pH in 98 children. The following phase 2 was observational analitic study in 38 AD patients todeterminepH level of atopic group (lesional and non lesional skin).Results: pH level of normal children skin was 4.86±0.461, lesional skin in AD was 5.86±0.564, and in nonlesional skin was 5.20±0.460. One way ANOVA test revealed value p=0.000, post hoc analysis value was p=0.000. Conclusions: Higher pH level was observed on AD patients. Skin pH is an important factor in the pathogenesis of AD, main concern in the treatment of AD is maintaining skin pH, which is important to reduce AD exacerbation.Key words: fillagrin, pH of atopic dermatitis,pH of normal children.