28 research outputs found
Paleocene postgenetic Accumulation of Nannoplankton on the Phillipsite Minerals in Roo Rise, Indian Ocean
Get PDFDOI: 10.17014/ijog.v5i1.92The sample studied was derived from the base of core MD 982156, one of the boreholes obtained during the IMAGES Expedition. The expedition was carried out as a research cooperation between Indonesia and French Governments using Marion Dufresne Research Vessel, belonging to IFRTP (French Institute for Polar Research). Within this sample, the phillipsite minerals were firstly found by the first author. Using SEM (Scanning Electron Microscope) at the magnification of x1,000 for group and up to x20,000 for individual photos, the nannoplanktons were shown to accumulate on the phillipsite minerals as a binding matrix. Different directions and velocity of the bottom current when the phillipsite minerals were originated, might have contributed in binding of the various mineral shapes. The calcareous nannoplankton in the studied area is preserved within the sediments between 3880 m to 3914 m depths below sea level (bsl). This interval possibly located between Lysocline and Carbonate Compensation Depth (CCD), is indicated by the presence of well preserved calcite minerals and calcareous nannoplankton within sediments. Discoaster multiradiatus, the dominant fossil within the sediments in the studied area, is Paleocene in age. Therefore, the binding of nannoplakton accumulation as a matrix of the phillipsite minerals occurred as a postgenetic deposition.</p
FORAMINIFERA PERAIRAN BALIKPAPAN, KALIMANTAN TIMUR: LINGKUNGAN PENGENDAPAN DAN PENGARUHNYA
Get PDFDari hasil telitian perairan lepas pantai Balikpapan, Kalimantan Timur (Lembar 1914), di dalam sedimen dasar laut antara kedalaman 18 m – 562 m bawah permukaan laut, dijumpai tidak kurang dari 195 spesies foraminifera bentos kecil dan besar dan 34 spesies foraminifera plankton.
Heterolepa praecincta merupakan spesies bentos kecil yang banyak mendominasi sedimen permukaan di daerah penelitian, kemudian Heterolepa margaritifera. Heterolepa praecincta masih dijumpai sampai kedalaman 383 m, sedangkan ke arah yang lebih dalam lagi jumlahnya semakin berkurang.
Foraminifera bentos kecil yang langka seperti Biarritzina proteiformis di daerah telitian dan di perairan antara Pangabakan - Sagita, di utara daerah telitian, sebelah utara Delta Mahakam, jumlahnya jauh lebih banyak jika dibandingkan dengan yang di bagian selatannya, yaitu di perairan utara P. Lombok, tempat spesies ini pertama kali dijumpai. Hal ini kemungkinan disebabkan oleh adanya arus yang berarah dari utara ke selatan.
Spesies Operculina spp., yang banyak diwakili oleh spesies O. complanata, O. ammonoides, dan O. heterosteginoides, banyak dijumpai pada kedalaman kurang dari 100 m. Spesies-spesies tersebut di beberapa lokasi banyak berasosiasi dengan Amphistegina lessonii, yang menandakan bahwa pada kedalaman ini turbulensinya rendah, dengan kondisi air yang cukup jernih.
Melimpahnya foraminifera plankton Neogloboquadrina dutertrei, terutama pada kedalaman lebih dari 100 m, menunjukkan bahwa pada kedalaman tersebut perairan daerah telitian mempunyai salinitas rendah.
Kata kunci: foraminifera, lingkungan, Balikpapan, Kalimantan Timur
The results of the Balikpapan offshore study in East Kalimantan waters (Sheet 1914), between 18m– 562m below sea level, revealed the sea floor sediment containing not less than 195 species of smaller and larger benthic foraminifera, and 34 species of planktic foraminifera.
The smaller benthic foraminifera Heterolepa praecincta dominates the surface sediment in the study area, then Heterolepa margaritifera. Heterolepa praecincta is still found at the 383 m depth. However, towards the deeper, their number is decreasing.
The number of uncommon smaller benthic foraminifera such as Biarritzina proteiformis in the study area and between Pangabakan – Sagita waters, in the north part of the study area, north of Mahakam Delta, is more abundant compared to that in the south part, in Lombok waters, the place where this species was firstly found. It is suggested that this condition is caused by the current coming from the north to the south.
The species Operculina spp., mostly representated by the species O. complanata, O. ammonoides, and O. heterosteginoides, are much more common found in the depth of less than 100 m. Those species is commonly found associated with Amphistegina lessonii, indicating that this depth has a low turbulent with clear water conditions.
The abundance of planktic foraminifera Neogloboquadrina dutertrei, especially within the depth of more than 100 m, indicating that this depth has a low salinity.
Keywords: foraminifers, environment, Balikpapan, East Kalimanta
Application of Hellison Learning Model to Increase Student’s Responsibility Value in the Use of Physical Education Learning Tools
No full textHIATUS PADA KALA EOSEN-MIOSEN TENGAH DI TINGGIAN ROO, SAMUDRA HINDIA, BERDASARKAN BIOSTRATIGRAFI NANNOPLANKTON
Get PDFNanoplankton dari dua puluh satu percontoh dari Tinggian Roo (MD982156) yang diperoleh selama Ekspedisi MD III - IMAGES IV telah dianalisis untuk kepentingan penelitian biostratigrafi study. Percontoh sedimen diambil dengan menggunakan penginti isap yang besar sekali (giant piston core). Lokasi daerah telitian adalah di Tinggian Roo, Samudra Hindia, Selatan Jawa Timur, di luar Parit Jawa.
Hasil penelitian menunjukkan bahwa berdasarkan nanoplankton, biostratigrafi daerah telitian dapat dibagi ke dalam 8 Zona yakni zona-zona: Discoaster multiradiatus, D. prepentaradiatus, D. asymmetricus, Pseudoemiliania lacunosa, D. brouweri, D.brouweri-oceanica, Gephyrocapsa oceanica dan Emiliania huxleyi.
Umur Paleosen ditunjukkan dengan adanya Discoaster multiradiatus sebagai spesies yang dominan, sedangkan sedimen yang berumur Miosen Akhir adalah D. prepentaradiatus.
Sedimen lempung tufaan pada kedalaman 30 m bawah dasar laut ke bagian paling bawah dari penampang yang didominasi oleh mineral Phillipsite, ternyata mengandung nanoplankton yang berumur Paleosen, sedangkan dari kedalaman 30 m ke bagian atas dari penampang sedimen ditutupi secara langsung oleh sedimen yang berumur Miosen Akhir – Holosen. Jadi di lokasi penelitian ini telah terjadi hiatus antara Eosen sampai paling tidak bagian bawah dari Miosen Akhir.
Adapun Phillipsit dikenal sebagai mineral yang secara authigenic terjadi di laut dalam yang bisa berasal dari hasil kegiatan gunung api. Manfaat mineral Phillipsit di dalam industri plastik, antara lain dapat dipakai dalam pembuatan resin termoaktif dan sebagai pemacu dalam proses pengerasan.
Kelompok Zeolit ini juga digunakan untuk menghilangkan kesadahan dalam industri deterjen, menjernihkan kelapa sawit, menyerap zat warna pada minyak hati ikan hiu, sebagai katalisator pada proses gasifikasi batubara yang berkadar belerang dan/atau nitrogen tinggi yang menghasilkan gas bersih
Kata Kunci: Hiatus, Kala Esosen-miosen, Tinggian Roo, Biostratigrafi Nanno Plankton
Nannoplankton of twenty one samples from Roo Rise (MD982156 core) obtained during MD III - IMAGES IV Expedition were analysed for biostratigraphic study. The samples were taken by using giant piston core. This core is located in Indian Ocean, south of East Jawa, outer part of Jawa Trench.
The results of the study indicate that, based on nannoplankton biostratigraphy of the study area, there are eight zones namely: Discoaster multiradiatus, D. prepentaradiatus, D. asymmetricus, Pseudoemiliania lacunosa, D. brouweri, D.brouweri-oceanica, Gephyrocapsa oceanica dan Emiliania huxleyi.
Paleocene sediment is indicated by the presence of Discoaster multiradiatus as the dominant species and Late Miocene sediment is indicated by the presence D. pentaradiatus.
The sediments from 30 m down to the base of the core, which is dominated by Phillipsite minerals (Zeolite Group), is composed of nannoplankton of Paleocene age, whereas from 30 m below sea floor (bsf) to the top of the core, the sediment is directly overlain by the sediment of Late Miocene – Holocene ages. Therefore there was a hiatus occurred in the study area between Eocene to at least the lower part of Late Miocene.
Phillipsite is known as an authigenic mineral deposited in the deep sea that could be derived from the volcanic activity products. This mineral has a benefit in the plastic industry that can be used in making thermoactive resin and as a catalyst in hardening process.
The Zeolite Group is also used in removing hardness in detergen industry, cleaning palm oil, absorbing color in lever oil of shark and as a catalyst in coal gasification having high sulphur and nitrogen producing clean gas.
Keyword: Hiatus, Eosen-miosen ages, Roo Rise, Biostratigrafi Nanno Plankto
FORAMINIFERA SEDIMEN DASAR LAUT DELTA MAHAKAM, KALIMANTAN TIMUR
Get PDFDalam kerangka penelitian dan penyelidikan geologi dan geofisika kelautan yang dilaksanakan oleh tim Pusat Pengembangan Geologi Kelautan, sebanyak 44 percontoh sedimen telah dianalisis foraminiferanya. Pada umumnya, foraminifera plangton yang lebih banyak dijumpai adalah Globigerinoides spp., Neogloboquadrina dutertrei, dan Pulleniatina spp. Neogloboquadrina dutertrei yang dikenal sebagai spesies penciri untuk kondisi salinitas rendah. Spesies-spesies tersebut banyak dijumpai pada kedalaman lebih dari 40 m, dan mencapai maksimum pada kedalaman 1400 m (lokasi 11, lepas pantai Tanjung Bayur). Di tempat seperti ini jumlah individu dan keanekaragaman foraminifera plangton paling tinggi dan termasuk ke dalam zona lereng sesar atas, sedangkan yang terendah ada di lokasi 7 (dekat pantai muara S.Muara Bayur), pada kedalaman 11,3 m. Foraminifera bentosnya yang banyak dijumpai adalah Amphistegina lessonii, Heterolepa spp., Operculina spp., dan Pseudorotalia schroeteriana. Keberadaan Amphistegina lessonii sangat tergantung terhadap intensitas cahaya, air yang jernih, dan biasanya berasosiasi dengan terumbu. Turbulensi di daerah telitian diperkirakan relatif rendah karena banyak dijumpainya spesies tersebut. Jumlah individu tertinggi foraminifera bentos terdapat pada lokasi 35 (Muara Lerong), pada kedalaman 45 m, sedangkan yang terendah ada di lokasi 6 (dekat pantai, muara S.Muara Bayur), pada kedalaman 17,3 m. Keanekaragaman tertinggi dijumpai dilokasi8, pada kedalaman 63,5 m, sedangkan yang terendah di lokasi 6. Fluktuasi jumlah individu foraminifera plangton dan bentos di bagian utara dan tengah tidak terlepas dari kemungkinan adanya arus bawah laut yang bisa mempengaruhi sedimen dan morfologi dasar lautnya. Di bagian selatan jumlah ini cenderung meningkat pada tempat yang menjauh dari pantai.
Within the framework of marine geological and geophysical surveyscarried out by the Marine Geological Institute, 44 samples had been analysed, especially for foraminifera. In general, planktonic foraminifera in the study area such as Globigerinoides spp, Neogloboquadrina dutertrei, and Pulleniatina spp are commonly found. Neogloboquadrina dutertrei is known as an indicator species for low salinity. They are found commonly at depths of more than 40 m, the most abundant of it is found at the depth around 1400 m (site 11, offshore of Bayur Peninsula). The maximum total number of individuals and the diversity of planktonic foraminifera occurr at this site as well as at the upper continental, whereas the minimum one is at site 7 (near the mouth of Muara Bayur River), at 11,3 m depth. The common benthonic foraminifera are Amphistegina lessonii, Heterolepa spp., Operculina spp., and Pseudorotalia schroeteriana. Amphistegina lessonii is a species, which is, dependent on light and clear water, and is usually associated with reef. The high number of individuals of this species suggests that the turbulent factor is considered to be relatively low. The maximum total number of individuals of benthonic foraminifera occurs at site 35 (Lerong River Mouth), at 45 m depth, whereas the minimum at site 6 (close to the mouth of Muara Bayur River), at 17,3 m depth. The maximum diversity occursatsite 8, at the depth of 63,5 m, whereas the minimum one is at site 6. The fluctuation of the total number of individuals of planktonic and benthonic foraminifera in the northern and southern parts is probably due to the morphology of the sea floor and the sediment influenced by bottom current. In the southern part the number of individuals of foraminifera tends to increase with the increasing of the distance from the shore
BIOSTRATIGRAFI FORAMINIFERA KUARTER PADA BOR INTI MD 982152 DAN 982155 DARI SAMUDRA HINDIA
Get PDFDari bor inti pada EKSPEDISI IMAGES, di Samudra Hindia, telah diteliti sebanyak 21 percontoh sedimen dari lokasi MD 982152, dan 29 buah dari lokasi MD 982155 untuk kepentingan biostratigrafi berdasarkan analisis foraminifera plankton dalam interval 1,5 meter.
Pada kedua penampang bor inti tersebut hanya dijumpai satu zona foraminifera plankton Kuarter, yaitu Zona Globorotalia truncatulinoides. Untuk MD 982152, zona ini bisa dibagi ke dalam dua subzona, yakni Subzona-subzona Globorotalia crassaformis hessi dan Globigerinella calida, sedangkan untuk MD 982155, zona tersebut bisa dibagi lagi ke dalam tiga subzona, yakni Subzona-subzona Globorotalia crassaformis hessi Globigerinella calida, dan Beella digitata.
Kejadian yang signifikan di kedua penampang itu adalah Datum Pemunculan Pertama dari Globigerinella calida dan Pemunculan Akhir dari Globorotalia crassaformis hessi. Pada MD 982155, dijumpai Pemunculan Pertama dari Beella digitata.
Kata kunci: foraminifera plankton, Kuarter, biostratigrafi, Samudra Hindia.
From IMAGES Expedition in Indian Ocean, 21 samples from MD 982152, and 29 samples from MD 982155 had been studied for the purpose of biostratigraphy based on planktonic foraminifera within 1,5 meter interval.
In both sections, only one Quaternary zone is found, namely Globorotalia truncatulinoides Zone. For MD 982152, that zone can be subdivided into two interval subzones e.g. Globorotalia crassaformis hessi and Globigerinella calida calida. However, in MD 982155 Globorotalia truncatulinoides Zone can be subdivided into three subzones namely, Globorotalia crassaformis hessi, Globigerinella calida calida, and Beella digitata Subzones.
The planktonic foraminifera event revealed in both sections are the First Appearance Datum (FAD) of Globigerinella calida calida and the Last Appearance (LAD) of Globorotalia crassaformis hessi. In MD 982155 the FAD of Beella digitata is found.
Keywords: planktonic foraminifera, Quaternary, biostratigraphy, Indian Ocean
Rancang Bangun Alat Peredam Kebisingan Berbasis Variasi Ketebalan Busa Dakron dan Egg Tray Terhadap Penurunan Intensitas Kebisingan di Industri Farmasi Tahun 2023
Get PDFPurified Water Ambien Loop System in the pharmaceutical industry operates continuously and generates high noise. Preliminary results of the noise of the pump engine is 92.4 dBA. The purpose of this study was to determine the design of a noise dampening device based on variations in the thickness of dacron foam and egg tray to reduce noise intensity in the pharmaceutical industry. This type of research is true experiment with a pretest-posttest research design without control. Noise data was obtained using a Sound Level Meter and the sample size used was 36 samples using a purposive sampling technique. Data were analyzed using the one way anova test. The average results of noise intensity measurements before and after being treated for artificial noise sources variation 1 is 92.32 dBA to 87.45 dBA, variation 2 is 92.38 dBA to 84.26 dBA, variation 3 is 92.40 dBA to 78.18 dBA. Variation 3 has the highest percentage decrease of 13.73% - 17.12%. The conclusion is that there are significant differences from each variation to reducing noise intensity and all variations are effective in reducing noise intensity, it is suggested that the industry can use a noise dampening device design using dacron foam and egg tray media and further research needs to carry out further research to determine the saturation period in the media noise silencer
PENGARUH MEDIA AUDIO VISUAL TERHADAP HASIL PEMBELAJARAN BULUTANGKIS: Studi Eksperimen di MTS Manbaul Huda
Get PDFABSTRAK
Nurhaeni Maolani Dewi NIM. 1203851 Skripsi: Pengaruh media Audio Visual Terhadap Hasil Pembelajaran di MTS Manbaul Huda. Skripsi ini dibimbing Oleh Dra. Hj. Mimin Karmini, M.Pd. Program Studi PJKR. Universitas Pendidikan Indonesia.
Penelitian ini adalah untuk melihat bagaimana pengaruh media audio visual terhadap hasil pembelajaran bulutangkis siswa kelas IX MTS Manbaul Huda (Studi Eksperimen di MTS Manbaul Huda.)” Metode penelitian yang digunakan adalah metode penelitian eksperimen. Populasinya adalah siswa kelas IX MTS Manbaul Huda, sampelnya sebanyak 74 siswa terbagi kedalam dua kelompok, yakni eksperimen dan control. Teknik pengambilan sampel menggunakan Sampel Jenuh. Instrument yang digunakan adalah GPAI. Dilanjutkan dengan uji t yang tidak ditemukan normalitas data maka peneliti menghitung data menggunakan uji non parametric yang disebut uji mann whitney yang didapat hasilnya bahwa data penelitian normal. Kemudian dengan membandingkannya dan menghitungnya dengan menggunakan uji hipotesis .Berdasarkan pencapaian tersebut, maka dapat disimpulkan bahwa, media audio visual berpengaruh signifikan terhadap pembelajaran bulutangkis di sekolah MTS Manbaul Huda.
Nurhaeni Maolani Dewi NIM. 1203851 Thesis: Audio Visual media Influence against the learning outcomes in MTS Manbaul Huda. This categorization is guided by the Dra. Hj. Mimin Karmini, M. Pd. PJKR Courses. Indonesia University Of Education.
This research is to see how the influence of audio visual media to the learning result of badminton students of class IX MTS Manbaul Huda (Experimental Study at MTS Manbaul Huda.) "The research method used is experimental research method. The population is the students of class IX MTS Manbaul Huda, the sample of 74 students is divided into two groups, namely experiment and control. Sampling technique using Saturated Samples. The instrument used is GPAI. Continued with t test that is not found normality of data then the researcher calculate data using non parametric test called mann whitney test which got result that normal research data. Then by comparing it and calculating it by using hypothesis test. Based on the achievement, it can be concluded that, audio visual media significantly influence badminton learning at MTS Manbaul Huda schoo
Paleocene postgenetic Accumulation of Nannoplankton on the Phillipsite Minerals in Roo Rise, Indian Ocean
No full textEkstrak Lidah Mertua (Sansevieria sp.) Efektif dalam Mereduksi Volatile Organic Compound (VOC)-Benzena Dalam Ruang
No full textExtract of Snake Plant (Sansevieria sp.) As a Reducer of Indoor Air Pollution, Volatile Organic Compounds (VOC) -Benzene. The quality of the indoor environment has become a health concern, as city dwellers spend 80-90% of their time indoors, where outdoor air pollution is several times higher. Indoor potted plants can remove airborne contaminants such as volatile organic compounds (VOCs), more than 300 of which have been identified in indoor air. and a very wide range of light, and is resistant to pollutants. This plant is also able to absorb more than 107 harmful pollutants in the air, this is due to Sansevieria sp. contains the active ingredient Pregnane glycosides. These active ingredients function to reduce pollutants into organic acids, sugars and amino acids so that these pollutants are no longer harmful to humans3. This study aims to see the extract of the tongue-in-law in reducing Volatile Organic Compounds (VOCs) in the room. The method used in this research is true experimental design with pre and post-test design without control design. Based on the results of the study, the decrease in benzene levels was done by using the sansevieria extract concentration with the average reduction proportions, namely: 10 ppm concentration; 98.24%, 20 ppm; 98.47%; 30 ppm; 98.73%. The results of statistical tests using the Mann Whitney U test showed that the results were 0.000 <0.05 so that there was a relationship, namely that there was a difference in the concentration of the extract of Sansevieria sp. against decreased levels of benzene. The most effective level of Sansevieria extract in reducing benzene levels in the air was 30 ppm with an average reduction proportion of 98.73%.Kualitas lingkungan dalam ruangan telah menjadi pertimbangan dalam kesehatan, karena penduduk kota menghabiskan 80-90% waktu mereka di dalam ruangan, dimana polusi udara bisa beberapa kali lebih tinggi daripada di luar ruangan. Tanaman pot dalam ruangan dapat menghilangkan kontaminan yang ditularkan melalui udara seperti senyawa organik menguap (VOC), lebih dari 300 diantaranya telah diidentifikasi di udara dalam ruangan.1 Tanaman lidah mertua (Sansevieria trifasciata) mempunyai banyak kelebihan, seperti mampu bertahan hidup pada rentang waktu suhu dan cahaya yang sangat luas, dan resisten terhadap polutan. Tanaman ini dapat mereduksi sekitar 107 jenis polutan yang berbahaya di udara, hal ini disebabkan bahan aktif preganane glikosid yang terkandung dalam tanaman Sansevieria sp. yang berfungsi untuk mereduksi polutan menjadi senyawa asam organik, gula dan asam amino, sehingga kandungan dalam polutan tersebut menjadi aman dan tidak membahayakan kesehatan manusia . Tujuan penelitian ini adalah untuk mengetahui efektivitas ekstrak lidah mertua dalam mereduksi Volatile Organic Compounds (VOCs) dalam ruangan. Metode dalam penelitian ini adalah true experimental design dengan menggunakan desain pre and post-test without control design. Berdasarkan hasil penelitian penurunan kadar benzena dengan menggunakan konsentrasi ekstrak sansevieria dengan rata-rata persentase penurunan, yaitu : Konsentrasi 10 ppm; 98,24%, 20 ppm; 98,47%; 30 ppm; 98,73%. Hasil uji statistik menggunakan Mann Whitney U Test adalah 0,000 < 0,05, maka terdapat hubungan yang bermakna perbedaan konsentrasi ekstrak Sansevieria sp. terhadap pernurunan kadar benzena. Kadar ekstrak Sansevieria yang paling efektif dalam menurunkan kadar benzena di udara adalah 30 ppm dengan persentase rata-rata penurunan adalah sebesar 98,73%
