M.Si.

Akuntansi Intermediate Ilustrasi Problem Dan Solusi

99% Lulus UN SMA IPA 2015

Ujian Nasional merupakan salah satu instrumen dalam mewujudkan pendidikan bermutu untuk menghasilkan lulusan yang bermutu. Tujuannya adalah untuk menilai pencapaian kompetensi lulusan secara nasional pada mata pelajaran yang diujikan. Untuk menghadapi Ujian Nasional dibutuhkan strategi yang tepat. Ada empat strategi dalam menghadapi Ujian Nasional, yaitu berlatih, berlatih, dan berlatih, serta berdoa. Hanya dengan berlatih seseorang akan menjadi sukses dan dengan berdoa jalan menuju sukses itu akan dimudahkan. Tidak cukup hanya dengan menguasai materi pelajaran, diperlukan juga latihan mengerjakan soal-soal yang pernah muncul di ujian sebelumnya. Buku ini merupakan solusi siswa dalam menghadapi Ujian Nasional SMA 2015. Setiap soal dalam buku ini dibahas secara lengkap, detail, dan mudah dipahami. Dilengkapi kisi-kisi dan prediksi Ujian Nasional 2015, serta dilengkapi bonus CD simulasi UN, penghitung skor, dan Buku Sekolah Elektronik (BSE) untuk SMA kelas 1, 2, dan 3, sebagai referensi. -CMedia-

99% Sukses Menghadapi UN SMA/MA IPA 2016

Untuk mencapai nilai maksimal dalam Ujian Nasional diperlukan banyak belajar dan berlatih mengerjakan soal. Dengan belajar dan berlatih, siswa akan memiliki daya pikir dan kemampuan menganalisis soal dengan sendirinya. Jika kedua hal tersebut telah didapatkan, siswa akan dapat mengerjakan soal-soal dengan cepat dan tepat. Buku 99% Sukses Menghadapi UN SMA/MA IPA 2016 hadir sebagai solusi tepat bagi siswa dalam proses belajar dan berlatih tersebut. Siswa akan mendapatkan lima paket soal asli UN terkini ditambah dengan paket prediksi UN SMA/MA IPA 2016 lengkap dengan pembahasan. Semua dikupas secara detail dan mudah dipahami. Sebagai bonus, siswa juga akan mendapatkan bonus CD berisi software desktop CBT UN SMA/MA IPA 2016 agar siswa bisa berlatih mengerjakan soal UN dengan sistem CBT yang sudah mulai diberlakukan. Tidak lupa disertakan kumpulan e-book yang akan membantu siswa dalam belajar dan berlatih. Dengan keunggulan-keunggulan tersebut, buku persembahan dari CMedia ini akan menjadi bekal berharga bagi siswa agar sukses menghadapi UN SMA IPA/MA 2016. Salam sukses!

99% Lulus UN SMA IPA 2013

Ujian Nasional merupakan salah satu instrumen dalam mewujudkan pendidikan bermutu untuk menghasilkan lulusan yang bermutu. Tujuannya adalah untuk menilai pencapaian kompetensi lulusan secara nasional pada mata pelajaran yang diujikan. Untuk menghadapi Ujian Nasional dibutuhkan strategi yang tepat. Ada empat strategi dalam menghadapi Ujian Nasional, yaitu berlatih, berlatih, dan berlatih, serta berdoa. Hanya dengan berlatih seseorang akan menjadi sukses dan dengan berdoa jalan menuju sukses itu akan dimudahkan. Tidak cukup hanya dengan menguasai materi pelajaran, diperlukan juga latihan mengerjakan soal-soal yang pernah muncul di ujian sebelumnya. Buku ini merupakan solusi siswa dalam menghadapi Ujian Nasional SMA IPA 2013. Setiap soal dalam buku ini dibahas secara lengkap, detail, dan mudah dipahami. Dilengkapi kisi-kisi dan prediksi Ujian Nasional 2013, serta dilengkapi bonus CD simulasi UN, penghitung skor, dan Buku Sekolah Elektronik (BSE) untuk SMA kelas 1, 2, dan 3, sebagai referensi. -CMedia-

Ekonomi Pembangunan

Di antara berbagai bidang dalam masyarakat, bidang ekonomi merupakan salah satu pokok kajian yang menarik untuk dianalisis. Sebagaimana diketahui bidang ekonomi banyak didasari oleh pemikiran dalam Ilmu Ekonomi (Economics). Dalam hal ini Ilmu Ekonomi adalah merupakan sebuah pengetahuan sosial (social science) yang mempelajari bagaimana pelaku ekonomi melakukan berbagai kegiatan; seperti; kegiatan produksi, distribusi, dan konsumsi barang dan jasa, serta cara pengelolaan sumber daya dan pengaturan produksi dengan sistem ekonomi yang sesuai.

REVOLUSI MENTAL DAN REVOLUSI ETOS KERJA: UPAYA MEMBANGUN BANGSA INDONESIA YANG LEBIH BERMARTABAT

<div><p><em>Mental revolution is a national movement and political jargon initiated by the Indonesian government nowadays. By using this jargon, it is expected that Indonesian people could achieve their dignity to be an independent, nobility, justice, and prosperous country. The mental revolution should be begun with job ethos – a mental attitude to see a job meaningfully. Job ethos is not seen as an effort to get salaries only. It is, however, an effort to do something meaningfully.  Job ethos will affect employee such as farmers, workers, merchants, and civil servant to do their jobs successfully and meaningfully.</em><em></em></p><p><strong>Kata kunci:  </strong>revolusi, mental, etos kerja</p></div>

ZAKAT PRODUKTIF SEBAGAI SALAH SATU SOLUSI PENGENTASAN KEMISKINAN DAN PENGANGGURAN DI INDONESIA

<p><em>Indonesia, as one of the majority Moslem population in the world, is potentially promising for the growth and the development of zakah (divine tax) program, especially property, and to be made more productive, both in terms worships and practices of Islamic values, and economic activities in general. By means of zakah raising institution (BAZ), the process of raising and distributing of zakah will be more effective and guaranteed. Furthermore, zakah is believed to be able to solve problems dealing with poverty resulting from the increase numbers of unemployement. Productive zakah, for example, give an opportunity for the zakah receivers to make use the money or property to start a new better life.</em><em></em></p><strong>Kata kunci</strong>:<em>  productive tithe/zakah, distribution, unemployment , eradicate poverty</em>

APLIKASI COMPUTER VISION PADA KUALITAS KEMATANGAN BUAH

<p>This paper introduces the computer vision with the comparison of color methods to classify the variants of fruit (tomatoes, chilies, and apples) which is based on the level or stage of ripe.  The color comparison method is quite simple; the tomato images captured by the camera (CCD) will be cropped partly. Then its characteristic color will be extracted and the color grade level will be calculated. The calculation of R (red), G (green) and B (blue) and the transformation of the color to Hue, Saturation, and Value was conducted in order to classify the fruit maturity. Thus, the ripe can be classified into 3, namely Ripe, Half-Ripe, and Un-ripe (not ripe). On contrary, over-ripe cannot be classified because the characteristics of the color is similar with the ripe tomato but the skin texture is slack, so it is not enough to characterize the color used to draw conclusion of being Over-ripe</p>Key words: image processing, computer vision, RGB, HVS

DIVERSITAS DIATOM DI PERAIRAN TELUK BAYUR KOTA PADANG SUMATERA BARAT

<p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;">This study had been done to determine the diversity of Diatoms in the waters of the Teluk Bayur Padang, West Sumatera. Diatom samples were collected using a plankton net from five different stations. Each station purposive sampling defined by land use considerations. The result was find 67 species of diatoms, 38 species including Centrales orders, 29 species including Pennales order Frequency of attendance 100% match Climacodiumbiconcavum and Eunotia Lunaris. The highest density of C.biconcavum was 15.22 ind./l in waters near Mount Meruwith the highes trelative density wasfound in the waters of Nirwana Gardensis equal to 15.90%. The highest density of E.Lunaris was 15.22 ind./l in Kasiak Island water sand the highest relative density was found in the same water samounted to 10.90%. The waters chemical physics assay, factorlevels of N-total are lower than the minimum limit of 0.116mg/l in waters near the fishing village of Teluk Bayur.</p><p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;">Key Words: Diatom, Diversity</p>

STUDI CELAH ENERGY 1,3,4 MONOMER DAN DIMER TIADIAZOL TERSUBSTITUSI-BH2

<p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;">The band gap of a 1,3,4 thiadiazole of monomer and dimmer in anti position, monomer and dimer of its – BH₂<span class="Apple-converted-space"> </span>substituted of those compounds had been studied by Calzaferri method. The optimized geometry had been obtained by optimizing the bond length (l) arA bond angel (α). The bond surface (δ) was not been optimized since those molecules were assumed to be planar. The band gap was determined by measuring the different of HOMO and LUMO of the optimal condition. From there studies it were obtained that the Eg 1,3,4 thiadiazole monomer ard dimer in anti position, monomer and dimer of its substiruted - BH₂<span class="Apple-converted-space"> </span>were 4,35793 eV; 3.31008eV ; 4.8900eV ;3,09322 eV; 3.11124 eV, respectively. Based on Eg. valued it was concluded that monomer substituted by -BH₂, 1,3,4 thidiazole diamer in anti position and dimmer of its substituted - BH_{2<span class="Apple-converted-space"> </span>}have Eg in semiconductor range (1,0-3,5 eV). The 1,3,4 thiadiazole monomer had Eg in the isolator range.</p><p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;">Key words: Monomer, Dimer, Tiadiazol Tersubstitusi-BH2</p>

TRANSLASI AUSLANDER-REITEN

<p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;">sequence in  is far from obvious. To see the presence of this sequence, we need to know Auslander-Reiten translations, as a functor composition between standart duality and transpotision. This sequences is useful in representation theory of algebras especially in formation of Auslander-Reiten Quiver. This paper will discuss about Auslander-Reiten translation and how to construct Auslander-Reiten translation from a module. . In the end of this paper we will see about main properties of this translation.</p><p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;"> </p><p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;">Key words : Auslander-Reiten translation, Auslander-Reiten sequences, Functor,</p><span style="color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa; display: inline !important; float: none;">                   Projective module</span>

Isolasi dan Karakterisasi Enzim Phytase Mikroflora Endofitik Tanaman Kedelai (Glycine max (L.) Merril)

<div style="text-align: left; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;"><p style="margin: 1em 0px;">Two endophytic fungal phytases is isolated from leaf, stem and root fragments collected from soybean and identified as<span class="Apple-converted-space"> </span><em>Rhizoctonia</em><span class="Apple-converted-space"> </span>sp. and<span class="Apple-converted-space"> </span><em>Fusarium verticillioides</em>. The phytase production was induced by phytate in medium used. The crude preparations were used in subsequent characterisation studies, pH and temperature optima and compared to other phytases tested, and is thus a promosing candidate for animal feed applications. This particular phytase retains activity over a wide range pH value characteristic of the digestive tract and could conceivably be more suited to increasingly hinger feed processing temperatures being today, than corresponding phytase from<span class="Apple-converted-space"> </span><em>Aspergillus niger</em>.  </p><p style="margin: 1em 0px;"><em> </em></p>Key words:<strong><span class="Apple-converted-space"> </span></strong>Endophytic fungal phytase, soybean,<span class="Apple-converted-space"> </span><em>Rhizoctonia</em><span class="Apple-converted-space"> </span>sp.,<span class="Apple-converted-space"> </span><em>Fusarium verticillioides</em>, characterisation</div>

POTENSI ANTIFERTILITAS EKSTRAK TEH HITAM PADA MENCIT (Mus musculus L.) JANTAN

<p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;">The effects of black tea extract on mice fertility was studied in twenty four (n=24) sexually  matured male mice. Mices were randomly divide into four (4) groups of six (6) mices per group. The experimental groups ware treated as follows: Group I treated with no received treatment, Group II with 1,25 %, Group III with 2,5 %, and Group IV with 5 % black tea extract. The extract was orally administered 1 ml/100 g body weigh for 35 days. The epididymis weight, sperm count, motility, viability and normal sperm morphology changes  were determined. The epididymis weight, sperm count, motility, viability and normal sperm were decreased. Treatment with highest dose 5 % of the extract resulted in a significant decreased when compared to the control. Result showed that black tea extract has potential for use as antifertility for animal in future.</p><span style="color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa; display: inline !important; float: none;">Key words: black tea extract, mice fertility</span>

IDENTIFIKASI MISKONSEPSI MATERI MEKANIKA DENGAN MENGGUNAKAN CRI (CERTAINTY OF RESPONSE INDEX)

<div style="text-align: left; color: #111111; font-family: 'Times New Roman', Times, Georgia, serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff;"><p style="margin: 1em 0px;"><em>It has been done a descriptive quantitative research about<span class="Apple-converted-space"> </span></em><em>The identification of mechanical Misconception Concept by Using</em><em><span class="Apple-converted-space"> </span>CRI (Certainty of Response Index). This research was applied to the first semester students of Physical Science Department of STAIN Batusangkar who were registered in 2011/2012 academic year that consisted of 55 students. In collecting the data, the instrument of this research was test in multiple choice form. It consisted 30 items. In asnwering the question, the students were asked to write CRI mark (0-5) as level of their believe to their answer. A misconception student can be known by comparing his or her answer based on CRI s/he fills. Research result showed that 80 % students did misconception of the time concept of<span class="Apple-converted-space"> </span></em><em>free falling bodies</em><em>, 45 % students did not know the concept of action (aksi) and reaction (reaksi), and 7.27 % students knew the concept of Newton Formula 1. It can be concluded that the level of misconception of the first semester students of Physical Science Department of STAIN Batusangkar who were registered in 2011/2012 academic year was very high.</em></p><strong>Kata kunci:<span class="Apple-converted-space"> </span></strong><em>miskonsepsi fisika, instrumen, mekanika, CRI (Certainty of Response Index)</em></div>

EVALUASI TEKNIK PEMOTONGAN AYAM DITINJAU DARI KEHALALAN DAN KEAMANAN PANGAN DI KABUPATEN TANAH DATAR

<p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;">Evaluation of slaughter chicken technique that observated from halal food and food safety in market in five subdictricts of Kabupaten Tanah Datar was studied. The experiment was used t-test to compare  halal slaugtering and bacteria contamination. The results showed that the place expedience was not significantly different between slaughtering place in market. The halal slaugtering practice was not significantly different for those ten places of slaughtering. TPC contamination for all slaughtering place was underneath from standard BMCM of SNI (≤1 x 10⁶cfu/g). The<span class="Apple-converted-space"> </span><em>C</em><em>oliform</em><span class="Apple-converted-space"> </span>contamination for all slaughtering place was over than 1x10²cfu/g, except for Sungai Tarab subdictricts.This evaluation of slaughtering place in markets showed that all slaughtering place did not yet implemented the good slaughtering practice and good sanitation and hygiene practice totally.</p><p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;">Key words: slaugtering in market, halal slaughtering, TPC, Coliform</p>

STUDI ELEKTROKIMIA PENGARUH FILM BISMUT DALAM PENENTUAN ARSENIK

<p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;">The research objective was to determine arsenic by anodic stripping technique of differential pulse voltammetry to see the effect of the arsenic bismuth films with the potential scan direction opposite to the research that has been done by Nagaosa, et al though there are no reports on the mechanism chemical reaction between arsenic clear with movies bismuth until now. The purpose of this research is to study the effect of bismuth films in the determination of arsenic. In this study, the addition of bismuth ions with a concentration of 200 ppb. Voltammograms can be seen from quite a significant difference between the peak current generated by As (III) films coated with a non-bismuth bismuth films. Visible peak current of As (III) is higher if the addition of bismuth films. This proves the statement Nagaosa, et al who stated that there are mixed effects of bismuth in the determination of As (III) although the mechanism remains unclear.</p><p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;">Keyword: film bismuth, arcenic, differential pulse, anodic, stripping voltammetry</p>

KEBERADAAN TITIK TETAP PADA RUANG BANACH-2

<p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;">On finite dimensional, in this paper will show that 2-Banach Space is a Banach space. This is prove by use Cauchy sequence end convergence properties. Then will be show the e. xistence of fixed point in 2-banach space, with the first proving existence of fixed point in banach space.</p><p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;"><strong> </strong></p><p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;">Key words: banach space, banach space -2, fixed point</p>

UJI KUALITAS AIR MINUM ISI ULANG DI KOTA BATUSANGKAR

<p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;">The purpose of this study was to test the quality of drinking water in the district refill Batusanggkar The Limo. Because of the tendency found in water use rechargeable (AMIU) by society, especially in urban areas, especially cities Batusanggkar increasing. However, the quality still needs to be studied in order to secure the quality of drinking water that directly affect public health, the course of a study of drinking water quality testing that has been done in District Batusangkar The limo showed that 9.1% of drinking water depots produce drinking water quality does not meet the requirements biological parameters (microbiological) that has been set by the government through Permenkes. 492 of 2010 on drinking water quality requirements, while for Physical parameters (temperature) and chemical parameters (pH) has met the requirements of the government.</p><p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;">Key words: drinking water,<span class="Apple-converted-space"> </span><em>Escherichia coli<span class="Apple-converted-space"> </span></em>, temperature, ph</p>

PENENTUAN Sr-90 DALAM SAMPEL BERAS DAN BEBERAPA SAYURAN DI SUMATERA BARAT

<p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;">Rice and vegetables are the most of agriculture in West Sumatera. These are of environment media that needs reaserched to know how far the radioactivity level. This was done at environment laboratory of PTKMR-BATAN. Step of reaserch has been done as follow determining the location and take the samples, cultivating the samples in laboratory, measuring the samples with LBC and samples analysis. From the result of measurement it shown that the lowest concentrate could be measured by LBC device that was 0,093 mBq/Kg. Sr-90 concentrate into the result of reaserch shown the data with variation from undetected data (0,4749 ± 1,1422)mBq/Kg. Activity concentration Sr-90 which was found in the plants of agriculture result in West Sumatera land are the low than Java island area and lower than found in Japan.</p><p style="margin: 1em 0px; color: #111111; font-family: Arial, Verdana, Helvetica, sans-serif; font-size: 11.2px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: left; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #fafafa;">Key words: environment media, radioactivity level, LBC.</p>

BARISAN AUSLANDER-REITEN

<p>This paper introduces Auslander-Reiten Sequences in mod A, where A is a finite dimensional -algebra. We will also introduces almost split morphism, as a special form of morphisms, which will provide a natural way to present the form of Auslander-Reiten sequences. These sequences are particulary useful in representation theory of algebras.</p><p>Key words:<strong> </strong>almost split morphisms, , irreducible morphisms, almost split sequences </p>