1,720,961 research outputs found
EFEKTIVITAS PENGGUNAAN VOLTASE RENDAH PADA STERILISASI MEDIA BIAKAN BAKTERI
No full textThe important treatment of culture media before being used is by sterilizing growth medium first to avoid contamination from contaminant bacteria which can ruin the result of bacteria in treatment ingredients. Nowadays, many researchers develop new methods to sterilize, like; disinfecting microorganisms with electrochemistry, electro-sterilization uses graphite electrode on liquid culture media nutrient broth produces the decrease in bacteria rate by 16.7%.. This research tends experiment whose subject is culture media nutrient broth, dependent variable is a number of dead bacteria and culture media nutrient broth, independent variable is 8 electric potentials, 10 volts, and duration 5 until 10 minutes. Electro-sterilization treatment in subject is 4 with 6 times repeat. Data collecting method use observation instruments of sterility test result culture media nutrient broth. The result of data bivariate analysis uses anova test determined that electro-sterilization will be effective and efficient if it is done in 10 volts for 10 minutes. Data analysis univariate by using frequent distribution determined that it is 8,3% of all total sample contain dead bacteria. Analysis data uses correlation test determined that culture media nutrient broth which has been given electro-sterilization treatment function as culture media.
Keywords: Electrosterilization, Electrode, Nutrient Brot
PEMANFAATAN BUAH KOLANG KALING (Arenga pinnata Merr) UNTUK MENGURANGI RASA NYERI PADA OSTEOARTHRITIS GENU
Full text linkUTILIZATION OF THE FRUIT OF THE SUGAR PALM (Arenga pinnata Merr) TO REDUCE PAIN FLAVOR IN GENU OSTEOARTHRITISOsteoarthrtis genu is one of the elderly human health problems in hamlet III, Sukadadi Village, Gedongtataan Subdistrict, Pesawaran District, Lampung Province. Elderly human complaints of this disease were identified based on the results of health examinations through observing the scale of pain osteoarthritis genu performed by the Tanjungkarang Health Polytechnic Health Team in September 2018. Through observation of the scale of pain, it was known that the average human age felt knee joint pain in the medium category. Osteoarthrtis genu is a chronic joint disorder that causes pain and disability of movement in the elderly population. The solution given by the Tanjungkarang Health Polytechnic Team to elderly men with this disease is giving the fruit of the sugar palm to be consumed for 2 (two) months, palm sugar, a blender to process the fruit of the sugar palm into a gel form, and educate elderly humans age in order to be able to independently use the fruit of the sugar palm to reduce pain due to osteoarthritis genu. The purpose of this community service event is to improve family health in empowering family potential in the Dusun III area of Sukadadi village so that it is expected to have a healthy and independent family outcome. The results of the activity of giving the fruit of the sugar palm to elderly humans who suffer from osteoarthritis genu disease is a reduction in pain suffered by the elderly and the emergence of elderly human independence in reducing pain due to osteoarthritis genu by consuming and processing the fruit of the sugar palm independently.Keywords: Elderly human, Osteoarthrtisgenu, the fruit of the sugar palm (Arenga pinnata Merr)Osteoarthrtisgenu merupakan salah satu permasalahan kesehatan manula di dusun III Desa Sukadadi Kecamatan Gedongtataan Kabupaten Pesawaran Provinsi Lampung. Keluhan manula penderita penyakit ini dketahui berdasarkan hasil pemeriksaan kesehatan melalui observasi skala nyeri osteoarthritis genu yang dilakukan oleh Tim Kesehatan Poltekkes Tanjungkarang bulan September Tahun 2018. Melalui observasi skala nyeri, diketahui rata-rata manula merasakan nyeri sendi lutut pada sekala katagori sedang. Osteoarthrtis genu ini merupakan kelainan sendi kronis yang menimbulkan rasa nyeri dan disabilitas gerakan pada populasi usia lanjut. Solusi yang diberikan oleh Tim Kesehatan Poltekkes Tanjungkarang kepada manula penderita penyakit ini adalah dengan memberikan buah kolang kaling untuk dikonsumsi dengan jangka waktu 2 (dua) bulan, gula aren, alat blender untuk mengolah buah aren menjadi bentuk gel, dan mengedukasi para manusia lanjut usia agar mampu mandiri dalam memanfaatkan buah kolang kaling untuk mengurangi rasa nyeri akibat penyakit osteoarthritis genu. Tujuan kegiatan pengabmas ini adalah dapat meningkatkan kesehatan keluarga dalam pemberdayaan potensi keluarga di daerah Dusun III desa Sukadadi sehingga diharapkan outcome keluarga yang sehat dan mandiri. Hasil dari kegiatan pemberian buah kolang kaling kepada manula yang menderita penyakit osteoarthritis genu adalah terjadi pengurangan rasa nyeri yang diderita oleh manula dan timbul kemandirian manula dalam mengurangi rasa nyeri akibat osteoarthritis genu dengan mengkonsumsi dan mengolah buah kolang kaling secara mandiri
Penambahan Sistem Aliran Listrik Paralel Pada Metoda Elektrosterilisasi Untuk Meningkatkan Hasil Sterilisasi Media Perbenihan Kuman
Full text linkProses sterilisasi media perbenihan kuman sangat menentukan hasil identifikasi kuman. Penelitian ini mengembangkan teknologi berbasis elektrokimia yaitu metode elektrosterilisasi dengan menambahkan sistem rangkaian listrik paralel pada alat sterilisasi media perbenihan kuman. Penelitian ini bersifat eksperimen dengan subjek penelitian adalah perbenihan kuman nutrient broth, variabel terikat adalah media biakan nutrient broth, variabel bebas adalah waktu kontak 10 dan15 menit. Perlakuan elektrosterilisasi pada subjek penelitian berjumlah 2 dengan 16 kali pengulangan. Tujuan penelitian untuk mengetahui keberhasilan sterilisasi menggunakan metode elektrosterilisasi dengan rangkaian listrik paralel guna meningkatkan hasil sterilisasi media perbenihan kuman nutrient broth.Tehknik pengumpulan data menggunakan instrumen observasi hasil uji sterilitas media perbenihannutrient broth. Analisa data univariat menggunakan distribusi frekuensi diketahui bahwa sebesar 25% dari 16 jumlah sampel mengandung bakteri mati. Hasil analisis hubungan antara penambahan rangkaian listrik paralel pada metode elektrolisasi diperoleh bahwa ada sebanyak 4 (25%) bakteri tidak tumbuh pada perlakuan 10 volt 10 menit. Sedangkan pada perlakuan 10 volt 15 menit sejumlah 0 (100%) bakteri tumbuh. Hasil uji statistik diperoleh nilai p 0,101 at disimpulkan tidak ada perbedaan antara penambahan rangkaian listrik pararel pada metode elektrosterilisasi dengan mensterilkan media perbenihan kumannutrient broth tanpa penambahan sistem aliran listrik paralel metoda elektrosterilisasi
Green synthesis of Ca(OH)2 nanoparticles from chicken eggshell waste as antibacterial agent
Get PDFChicken eggshell waste, though abundant in CaCO3 that can be converted into various products like calcium hydroxide nanoparticles (NPs), has received limited attention. This study aimed to synthesize calcium hydroxide NPs from eggshell waste and evaluate their antibacterial properties against Staphylococcus aureus and Escherichia coli. The researchers employed a top-down approach with thermal decomposition to produce environmental-friendly calcium hydroxide NPs, and conducted in vitro tests to assess their antibacterial activity, with and without exposure to sunlight. The minimum inhibitory concentration and disc diffusion methods were used to evaluate the antibacterial effects. X-Ray diffraction analysis confirmed the synthesis of calcium hydroxide NPs. Further, a paired T-test showed that the calcium hydroxide NPs exhibited significant antibacterial activity against both bacterial through photocatalytic mechanisms, in comparison to their performance without such techniques. The utilization of green synthesis techniques to produce materials with potential antimicrobial applications presents significant developmental opportunities for the future
Efektivitas Ekstrak Bunga Cengkeh (Eugenia aromatica) Terhadap Pertumbuhan Bakteri Staphylococcus aureus
Full text linkStaphylococcus aureus  menyebakan  infeksi kulit (bisul, impetigo, furunkel, infeksi luka), infeksi pernapasan (pneumonia, abses paru), Invasif (septikemia, abses dalam, sindrom syok toksik), traktus gastrointestinal, dan infeksi terkait alat. Salah satu tanaman tradisional yang sering digunakan sebagai obat tradisional adalah bunga cengkeh. Kandunga senyawa antibakteri di dalam bunga cengkeh yaitu flavonoid, tannin, alkoloid, dan euganol.  Jenis penelitian yang dilakukan adalah experimental dengan rancangan penelitian acak lengkap (RAL). Variabel bebasnya adalah ekstrak bunga cengkeh (Eugenia aromatica)  dengan konsentrasi 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, dan 100% dan variabel terikatnya adalah uji daya hampat pertumbuhan bakteri Staphylococcus aureus. Tempat penelitian dilakukan di Laboratorium Bakteriologi Jurusan Analis Kesehatan Poltekkes Tanjung karang pada bulan April – Juni. Hasil penelitian menunjukkan bahwa ekstrak bunga cengkeh konsentrasi 10% sampai dengan 100% mampu menghambat pertumbuhan bakteri Staphylococcus aureu. Konsentrasi terendah dari ekstrak bunga cengkeh (Eugenia aromatica) yang dapat menghambat adalah konsentrasi 10% dengan rerata 15,87 mm.dan konnsentrasi tertinggi ekstrak bunga cengkeh (Eugenia aromatica) konsentrasi 100% didapatan rerata 21,40. Sedangkan ekstrak bunga cengkeh pada konsentrasi 70% dengan rerata 19,16 mm sudah efektif menghambat pertumbuhan bakteri apabila dibandingkan dengan kontrol positif antibiotik amikasin dengan rerata 18,8 mm
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
- …
