220 research outputs found
Lithofacies and depositional environment spanning the Cretaceous-Paleogene boundary on the New Jersey coastal plain
No full textThe sedimentary record spanning the Cretaceous-Paleogene (K/Pg) boundary was examined in outcrop and in seven cores recovered from a 50 km long transect along the outcrop belt on the New Jersey coastal plain. The objectives were to: (1) conduct a high-resolution study of the K/Pg lithofacies, (2) document spatial and temporal changes in composition and texture of the sediments, and (3) interpret any changes in the depositional environment across this important geological boundary when a mass extinctions occurred. Analyses include core description, textural, petrographic, microprobe, and XRD analyses. Five lithofacies were interpreted in the Upper Cretaceous sediments and three lithofacies were recognized from the lowermost Paleogene deposits. Microprobe studies show the chemistry of Upper Cretaceous and lowermost Paleogene glauconite are identical (~7-8% K2O), but their color difference may suggest different redox condition. XRD analyses show the Upper Cretaceous clay contains more land-derived detritus than the lowermost Paleogene clay. The following sequence of events is interpreted from the sediment record spanning the K/Pg boundary: (1) deposition in near-shore setting and slow sedimentation in middle shelf when sea level was falling, albeit still shelfal depth; (2) deposition of K/Pg lithofacies when sea level was falling possibly creating a diastem but not a sequence boundary, per se; (3) a transgression above the K/Pg boundary; and (4) deposition in middle shelf possibly with decreased ocean productivity and a more reducing environment. There is no sedimentological evidence above the K/Pg boundary, suggesting tsunami-related deposition associated with a bolide impact. Either a tsunamite was eliminated by bioturbation, or NJCP was too far from the impact site to be affected. A transgressive lag, instead, was formed by normal sedimentation during the subsequent transgression in the early Paleocene.M.S.Includes bibliographical referencesby Hendra Wahyud
Analysis of Hendra Virus Fusion Protein N-Terminal Transmembrane Residues
Full text linkHendra virus (HeV) is a zoonotic enveloped member of the family Paramyoxviridae. To successfully infect a host cell, HeV utilizes two surface glycoproteins: the attachment (G) protein to bind, and the trimeric fusion (F) protein to merge the viral envelope with the membrane of the host cell. The transmembrane (TM) region of HeV F has been shown to have roles in F protein stability and the overall trimeric association of F. Previously, alanine scanning mutagenesis has been performed on the C-terminal end of the protein, revealing the importance of β-branched residues in this region. Additionally, residues S490 and Y498 have been demonstrated to be important for F protein endocytosis, needed for the proteolytic processing of F required for fusion. To complete the analysis of the HeV F TM, we performed alanine scanning mutagenesis to explore the residues in the N-terminus of this region (residues 487–506). In addition to confirming the critical roles for S490 and Y498, we demonstrate that mutations at residues M491 and L492 alter F protein function, suggesting a role for these residues in the fusion process
RETRACTION: Analisis Fungsi Harian Serambi Indonesia pada Masyarakat Desa Doy Kecamatan Ulee Kareng Kota Banda Aceh
No full textRETRACTION TO:Jailani, A., Hendra, Y., & Priadi, R. (2020). RETRACTION: Analisis Fungsi Harian Serambi Indonesia pada Masyarakat Desa Doy Kecamatan Ulee Kareng Kota Banda Aceh. JURNAL SIMBOLIKA: Research and Learning in Communication Study, 6(2), 96-106. doi:https://doi.org/10.31289/simbollika.v6i2.3635This article has been retracted by the publisher based on the following reason:This is based on the editor that the author has committed acts of violation of publication ethics. The author has published a triple publication by submitting the same article to one journals before and one journal after. The author admits that he forgot to have submitted the same article to another journal. This article also has published in the1. Jurnal Ilmiah Komunikasi CommuniqueJAILANI, A., Hendra, Y., & Priyadi, R. (2020). Analisis Implementasi Fungsi Media Massa Pada Harian Serambi Indonesia. Jurnal Ilmiah Komunikasi Communique, 2(2), 85-93. Retrieved from http://ejurnal.stikpmedan.ac.id/index.php/JIKQ/article/view/282. PERSEPSI: Communication Journal, Vol .3 No. 2, 2020, 103-112, DOI: 10.30596/persepsi.v%vi%i.4447(Analisis Fungsi Harian Serambi Indonesia Pada Masyarakat Desa Doy Kecamatan Ulee Kareng Kota Banda Aceh | Jailani | Persepsi: Communication Journal (umsu.ac.id)One of the conditions of submission of a paper for publication in this journal is that authors declare explicitly that their work is original and has not appeared in a publication elsewhere, and also not considered by another journal. As such this article represents a severe abuse of the scientific publishing system. The scientific community takes a very strong view on this matter, and apologies are offered to readers of the journal that this was not detected during the submission dan publication process
RETRACTION: Analisis Fungsi Harian Serambi Indonesia pada Masyarakat Desa Doy Kecamatan Ulee Kareng Kota Banda Aceh
No full textRETRACTION TO:Jailani, A., Hendra, Y., & Priadi, R. (2020). RETRACTION: Analisis Fungsi Harian Serambi Indonesia pada Masyarakat Desa Doy Kecamatan Ulee Kareng Kota Banda Aceh. JURNAL SIMBOLIKA: Research and Learning in Communication Study, 6(2), 96-106. doi:https://doi.org/10.31289/simbollika.v6i2.3635This article has been retracted by the publisher based on the following reason:This is based on the editor that the author has committed acts of violation of publication ethics. The author has published a triple publication by submitting the same article to one journals before and one journal after. The author admits that he forgot to have submitted the same article to another journal. This article also has published in the1. Jurnal Ilmiah Komunikasi CommuniqueJAILANI, A., Hendra, Y., & Priyadi, R. (2020). Analisis Implementasi Fungsi Media Massa Pada Harian Serambi Indonesia. Jurnal Ilmiah Komunikasi Communique, 2(2), 85-93. Retrieved from http://ejurnal.stikpmedan.ac.id/index.php/JIKQ/article/view/282. PERSEPSI: Communication Journal, Vol .3 No. 2, 2020, 103-112, DOI: 10.30596/persepsi.v%vi%i.4447(Analisis Fungsi Harian Serambi Indonesia Pada Masyarakat Desa Doy Kecamatan Ulee Kareng Kota Banda Aceh | Jailani | Persepsi: Communication Journal (umsu.ac.id)One of the conditions of submission of a paper for publication in this journal is that authors declare explicitly that their work is original and has not appeared in a publication elsewhere, and also not considered by another journal. As such this article represents a severe abuse of the scientific publishing system. The scientific community takes a very strong view on this matter, and apologies are offered to readers of the journal that this was not detected during the submission dan publication process
Legal Certainty of Investment in Management of Industrial Plantation Forests in Indonesia
No full textPopularity, media and electability: study of Alfiansyah Komeng in the election of members of the Regional Representative Council (DPD) in West Java / Hendra, Mudiyati Rahmatunnisa and Ratnia Solihah
Full text linkIn 2024 Indonesia will again hold general elections to fill executive and legislative positions. One of the legislative member elections was to elect members of the Regional Representative Council (DPD) as the institution representing each province in Indonesia. An interesting phenomenon in this election was Alfiansyah Komeng's election as a DPD member representing West Java Province, surpassing the other candidates with the highest vote acquisition of 5,399,699 votes. Using a qualitative approach and data collection techniques through literature studies, the results showed that Komeng's electability was based on popularity, integrity, people's dissatisfaction with conventional politics, photos on ballot papers and the benefits of holding elections simultaneously. Meanwhile, according to the author, the media and the message conveyed are minor factors in Komeng's choice
RANCANG BANGUN PENGGERAK PINTU PAGAR GESER MENGGUNAKAN 12 VOLT DIRECT CURRENT (DC) POWER WINDOW MOTOR GEAR
Full text linkUntuk menggerakkan pintu pagar geser besi pada umumnya digerakkan oleh suatu motor listrik berkapasitas besar, memerlukan biaya pemasangan dan perbaikan yang mahal. Hingga saat ini orang masih beranggapan bahwa biaya untuk pemasangan dan perawatan pintu pagar otomatis sangat mahal. Alat yang penulis buat merupakan solusinya.Power Window Motor Gear dengan tegangan 12 Volt DC adalah salah satu komponen yang mudah didapat dipasaran, selain daya listrik yang digunakan rendah, maintenance mudah dilakukan, alat tersebut tidak bisa langsung dipasang tetapi harus dimodifikasi terlebih dahulu sehingga perlu dianalisis penggunaan serta komponen-komponen yang menyertainya.Penggunaan Power Window Motor Gear sebagai penggerak pintu pagar geser dapat menghasilkan suatu alat untuk buka tutup pintu pagar secara efektif, alat yang dibuat dapat membantu meringankan pekerjaan manusia. Metode yang dilakukan berdasarkan perhitungan dan uji coba rangkaian yang dirancang bangun. Hasil pengukuran serta Equipment direncanakan dalam analisis penggunaan Power Window Motor Gear sebagai penggerak pintu pagar geser. Elemen-elemen yang diperhitungkan adalah momen gaya dan kecepatan putar poros.Dari Hasil perhitungan dapat diketahui bahwa besarnya Torsi adalah 3,5 Nm, pulley untuk menghasilkan putaran 9 rpm pada pagar geser dan kecepatan putar 90 rpm dari Power Window Motor Gear, diperlukan pulley dengan ukuran 20cm dan 3,8 cm
DETERMINASI OPINI AUDIT DENGAN PENEKANAN GOING CONCERN PADA PERUSAHAAN MANUFAKTUR DI BURSA EFEK INDONESIA
Full text linkABSTRACT Going concern opinion accepted by a company represents the condition and events which arises auditor’s hesitation of the company’s going concern. Going concern audit opinion can be used as early warning to the user of financial statements in order to prevent mistakes on decision making. A number of research has been conducted concerning factors that influence to going concern audit opinion. Yet, its result keeps showing inconsistency. This study objective is to reinvestigate factors that influence going concern audit opinion. The factors used on this research are liquidity, leverage, profitability, company’s size, company’s growth, audit lag, and auditor client tenure.This research using sample of manucaturing companies listed on Indonesia Stock Exchange during 2012-2016. Based on purposive sampling, there are 30 manufacturing companies which fulfilled the sample requirements. Hypotesis testing on this research was done by the logistic regression analysis.The hypotesis testing showed that leverage have positive relationship to going concern audit opinion. Variables of profitability have negative relationship to going concern audit opinion. Variables of liquidity, company’s size, company’s growth, audit lag and auditor client tenure have no relationship to going concern audit opinion
Development of Mathematics Learning Media Based on Discovery Learning Integrated with Inderapura Culture to Improve Mathematical Problem Solving Ability for Junior High School Student of Grade VIII
No full textBased on the preliminary analysis conducted at SMP Negeri 2 Pancung , the students' mathematical problem solving ability was still low. The low ability of students to solve mathematical problems caused by (1) teachers do not use worksheet in the learning process, (2) The learning process that has not facilitated students to construct their own knowledge. Based on this problem, researchers developed mathematical learning media based on discovery learning integrated with Inderapura culture to improve students' mathematical problem solving abilities.This research was a development research conducted with the Plomp development model. This model was carried out in 3 stages. In the first stage was the preliminary research phase and it was needs analysis, curriculum analysis, student analysis and concept analysis. In the second stage was the development or prototype phase which was designed in accordance with the integrated learning discovery model of Inderapura culture. In the third stage was the assessment phase which aimed to see the effectiveness of learning media by conducting large group field tests. The subjects of this study were the eighth grade students of SMPN 2 Pancung Soal. Data collected by documentation, observation, interviews, questionnaires, and tests. Data from observations, questionnaires and tests were analyzed quantitatively and strengthened by the results of the documentation analyzed descriptive qualitative.The results showed that mathematics learning media in the form of lesson plan andworksheet based on discovery learning integrated with Inderapura culture for grade VIII in the second semester of Junior High School were produced by fulfilling valid, practical and effective categories. Validity was tested in terms of content, usage, language and graphics. Applicable in terms of application, time, ease of use and effective in terms of potential impacts on students' mathematical problem solving abilities. The conclusion was mathematics learning mediawas feasible to be used as reference material in mathematics learning, especially materials for constructing flat side spaces in gradeVIII of SMP N 2 Pancung
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