scholarly journals PENGARUH TINGKAT KONSENTRASI FRAKSI EKSTRAK DAUN MENGKUDU DAN MIMBA TERHADAP PERTUMBUHAN DAN SPORULASI Colletotrichum capsici

2016 ◽  
Vol 4 (1) ◽  
Author(s):  
Septy Anggreini ◽  
Efri Efri ◽  
Muhammad Nurdin
Keyword(s):  
Air Flow ◽  
Colletotrichum Capsici ◽  
Laminar Air Flow ◽  
Potato Sucrose Agar

Salah satu penyakit utama yang menyerang tanaman cabai adalah penyakit antraknosa yang disebabkan oleh Colletotrichum capsici. Penelitian ini bertujuan untuk mengetahui tingkat keefektifan fraksi ekstrak daun mengkudu dan fraksi ekstrak daun mimba serta mempelajari pengaruh tingkat konsentrasi fraksi ekstrak daun mengkudu dan fraksi ekstrak daun mimba dalam menekan pertumbuhan dan sporulasi jamur C. capsici secara in vitro. Penelitian ini dilakukan di Laboratorium Ilmu Penyakit Tumbuhan Fakultas Pertanian Universitas Lampung pada bulan April 2015 sampai Juli 2015. Alat yang digunakan antara lain alat fraksinasi sederhana, mikropipet, haemocytometer, dan Laminar air flow. Bahan yang digunakan antara lain daun mengkudu, daun mimba, biakan C. capsici, dan media Potato Sucrose Agar (PSA). Penelitian ini menggunakan rancangan acak lengkap (RAL) tersarang dengan dua faktor dan data dianalisis ragam kemudian dilanjutkan dengan perbandingan polinomial ortogonal pada taraf 1%. Hasil penelitian menunjukkan bahwa fraksi ekstrak daun mengkudu dan fraksi ekstrak daun mimba memiliki keefektifan yang tidak berbeda dalam menghambat pertumbuhan dan sporulasi C. capsici secara in vitro. Tingkat konsentrasikedua jenis fraksi ekstrak tanaman tersebut berbeda dalam menghambat pertumbuhan dan sporulasi C. capsici. Semakin tinggi tingkat konsentrasi fraksi ekstrak tanaman uji tidak selalu diikuti dengan meningkatnya daya hambat terhadap pertumbuhan diameter koloni C. capsici, tetapi semakin tinggi tingkat konsentrasi fraksi ekstrak tanaman tersebut semakin efektif untuk menghambat sporulasi C. capsici.

RESPONSE OF TURMERIC SHOOT EXPLANT AFTER CYTOKININ WITH IN VITRO

2019 ◽  
Vol 24 (2) ◽  
pp. 143-152
Author(s):  
Marhan Nurullia ◽  
Erni Suminar Suminar ◽  
Anne Nurani
Keyword(s):  
Tissue Culture ◽  
Root Length ◽  
Air Flow ◽  
T Test ◽  
Shoot Height ◽  
Best Response ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Laminar Air Flow

This study was aimed at determining the response of turmeric shoot explants after the provision of various types and concentrations of cytokinins in vitro. This experiment was conducted at the Tissue Culture Laboratory, Faculty of Agriculture, Padjadjaran University from January to April 2018. The data were analyzed using T-Test. The experimental method used in this research was Completely Randomized Design (CRD). Explant planting was carried out in Laminar Air Flow. The experiment consisted of 7 treatments consisting of 4 replications and each test consisted of 4 units. Observation of this experiment was carried out for 12 MST. The main observations were made on the data that were tested statistically namely the percentage of explant growing shoots, percentage of explant growing roots, shoot height, number of tuns, number of roots and root length. The treatments consisted of Control, 2.5 mg L-1 BAP, 5 mg L-1 BAP, 0.5 mg L-1 TDZ, 1 mg L-1 TDZ, 0.01 mg L-1 Zeatin and 0.1 mg L Zeatin -1. The results show that the treatment of 1 mg L-1 TDZ shows the best response to the growth of turmeric explants by increasing the number of turmeric shoot explants than the others.RESPONS EKSPLAN TUNAS KUNYIT SETELAH SITOKININ SECARA IN VITROTujuan dari penelitian ini yaitu untuk melihat respons eksplan tunas kunyit terhadap pemberian berbagai jenis dan konsentrasi sitokinin secara in vitro. Percobaan ini dilakukan di Laboratorium Kultur Jaringan, Fakultas Pertanian, Universitas Padjadjaran dari bulan Januari sampai April 2018. Hasil percobaan dianalisis dengan Sample T-Test. Metode percobaan yang digunakan dalam penelitian ini yaitu Rancangan Acak Lengkap (RAL). Penanaman eksplan dilakukan di dalam Laminar Air Flow. Percobaan terdiri dari 7 perlakuan sebanyak 4 ulangan dan setiap ulangan terdiri dari 4 unit. Pengamatan percobaan ini dilakukan selama 12 MST. Pengamatan utama dilakukan terhadap data-data yang diuji secara statistik yakni persentase eksplan tumbuh tunas, persentse eksplan tumbuh akar, tinggi tunas, jumlah tunas, jumlah akar dan panjang akar. Perlakuan terdiri dari Kontrol; 2,5 mg L-1 BAP; 5 mg L-1 BAP; 0,5 mg L-1 TDZ; 1 mg L-1 TDZ; 0,01 mg L-1 Zeatin; dan 0,1 mg L-1 Zeatin. Hasil penelitian menunjukkan bahwa perlakuan 1 mg L-1 TDZ menunjukkan respons yang lebih baik terhadap pertumbuhan eksplan kunyit dengan meningkatkan jumlah tunas eksplan tanaman kunyit daripada yang lainnya.

scholarly journals SEM Analysis of Enamel Abrasion after Air Polishing Treatment with Erythritol, Glycine and Sodium Bicarbonate

Coatings ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 549 ◽  
Author(s):  
Bruna Sinjari ◽  
Gianmaria D’Addazio ◽  
Martina Bozzi ◽  
Manlio Santilli ◽  
Tonino Traini ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Sodium Bicarbonate ◽  
Air Flow ◽  
Dental Enamel ◽  
In Vitro Study ◽  
Sem Analysis ◽  
Medical Systems ◽  
Air Polishing ◽  
And Control

The aim of this in vitro study was to evaluate the enamel surface topography after treatment with three air polishing powders: Glycine (A), erythritol (B), and sodium bicarbonate (C) (Air Flow Soft, Plus and Classic powders, EMS Electro Medical Systems S.A., Nyon, Switzerland). Fifteen extracted incisors were randomly divided into three groups of five teeth each, A, B and C, respectively. The teeth were blocked in plaster bases, washed, dried and half-covered with polytetrafluoroethylene strips before treatment. In this way, each half-treated dental element became test and control of itself. Comparative statistical analysis of Rq (geometric average of the deviations occurring in roughness profile) was performed. The scanning electron microscope (SEM) analysis showed different degrees of surface roughness between the groups, decreasing after treatment. In addition, a statistically significant reduction p < 0.05 was present in group C (Rq mean non-treated 108.17 µm, 95% CI: 97.29–124.01 and Rq mean treated 86.78 µm, 95% CI: 80.63–93.70). A decrease in surface roughness post-treatment was not observed in group A and B. Therefore, it may be concluded that the air flow powders tested herein can be used on dental enamel to reduce the surface roughness due to function and the action of dental therapies.

Impact of different-sized laminar air flow versus no laminar air flow on bacterial counts in the operating room during orthopedic surgery

2011 ◽  
Vol 39 (7) ◽  
pp. e25-e29 ◽  
Author(s):  
Magda Diab-Elschahawi ◽  
Jutta Berger ◽  
Alexander Blacky ◽  
Oliver Kimberger ◽  
Ruken Oguz ◽  
...  
Keyword(s):  
Operating Room ◽  
Orthopedic Surgery ◽  
Air Flow ◽  
Bacterial Counts ◽  
Laminar Air Flow

scholarly journals Current Evidence for the Use of Laminar Flow in Reducing Infection Rates in Total Joint Arthroplasty

2015 ◽  
Vol 9 (1) ◽  
pp. 495-498 ◽  
Author(s):  
M James ◽  
W.S Khan ◽  
M.R Nannaparaju ◽  
J.S Bhamra ◽  
R Morgan-Jones
Keyword(s):  
Laminar Flow ◽  
Total Joint Arthroplasty ◽  
Air Flow ◽  
Joint Arthroplasty ◽  
Current Evidence ◽  
Air Particulate ◽  
Surgical Infections ◽  
Operating Theatres ◽  
Laminar Air Flow ◽  
Operative Wound

Since the introduction of laminar air flow in orthopaedic theatres by Sir John Charnley, it has widely become accepted as the standard during orthopaedic procedures such as joint arthroplasty. We present a review of available current literature for the use of laminar flow operating theatre ventilation during total joint arthroplasty and examines the effectiveness of laminar flow ventilated operating theatres in preventing post-operative wound infection. Results of our findings suggest that while bacterial and air particulate is reduced by laminar air flow systems, there is no conclusive effect on the reduction of post-operative wound infections following total joint arthroplasty. We conclude that a combination of strict aseptic technique, prophylactic antibiotics and good anaesthetic control during surgery remains crucial to reduce post-operative surgical infections.

scholarly journals Laboratorium Sederhana Perbanyakan Agensia Hayati Pengendali Hama dan Penyakit Tanaman Padi di PP Gapsera Sejahtera Madiri Lampung Tengah

2020 ◽  
Vol 1 (1) ◽  
pp. 73-79
Author(s):  
- Ivayani
Keyword(s):  
Bacillus Thuringiensis ◽  
Nuclear Polyhedrosis Virus ◽  
Air Flow ◽  
Polyhedrosis Virus ◽  
Laminar Air Flow ◽  
Nuclear Polyhedrosis

Kecamatan Seputih Raman Kabupaten Lampung Tengah merupakan salah satu daerah penghasil komoditi padi yang memasok persediaan beras di Provinsi Lampung. Gapoktan Gapsera sejahtera Mandiri merupakan salah satu Gapoktan di Kecamatan Seputih Raman yang sudah menerapkan pertanian organik dalam budidaya tanamana padi. Salah satu produk yang dihasilkan oleh Gapoktan Subur Asri adalah beras organik “Berasera”. Dalam proses budidaya dan pengendalian hama peyakit Gapoktan Subur Asri sudah tidak menggunakan bahan kimia sintetik melainkan dengan menggunakan agensia hayati. Akan tetapi dalam perbanyakan agensia hayati (mikroorganisme) belum maksimal karena kurangnya pengetahuan mengenai teknik perbanyakan agensia hayati, selain itu juga tidak tersedianya tempat kerja perbanyakan yang tidak aseptik (steril) sehingga terjadinya kontaminasi dengan mikroorganisme lainnya. Oleh karena itu untuk menciptakan lingkungan perbanyakan agensia hayati yang aseptik maka diperlukan suatu Laboratorium sederhana yang terdiri dari alat-alat standar Laboratorium. Metode yang digunakan adalah pembimbingan melalui sosialisasi teknik perbanyakan agensia hayati, pendampingan dalam mencari agensia hayati di lapangan dan pendampingan pembuatan laboratorium sederhana. Kegiatan yang telah dilaksanakan di PP Gapsera Sejahtera Mandiri adalah Penyuluhan mengenai cara isolasi agensia hayati NPV (Nuclear Polyhedrosis Virus) dan isolasi Bt (Bacillus thuringiensis) serta teknik perbanyakannya, Teknik bekerja secara aseptik dan Pembuatan Laboratorium sederhana yang salah satu alatnya ialah Enkas (Lemari kerja aseptik) / Laminar air flow. Berdasarkan kegiatan yang telah dilakukan, petani mampu melakukan isolasi NPV dan Bt, serta mampu bekerja secara aseptik guna mendapatkan/ memperbanyak agensia hayati pengendali hama dan penyakit tumbuhan. Luaran dari kegiatan ini adalah tersedianya laboratorium sederhana yang operasioanal untuk perbanyakan agensia hayati pengendali hama dan penyakit tanaman.

scholarly journals Discharge characteristics in inhomogeneous fields under air flow

2017 ◽  
Author(s):  
Stephan Vogel ◽  
Joachim Holbøll
Keyword(s):  
Air Flow ◽  
Partial Discharges ◽  
Positive Polarity ◽  
Wind Speeds ◽  
Space Charges ◽  
Streamer Corona ◽  
Dc Potential ◽  
Inhomogeneous Fields ◽  
Laminar Air Flow ◽  
The Impact

<p>This research investigates the impact of high velocity air flow on Partial Discharge (PD) patterns generated in strongly inhomogeneous fields. In the laboratory, a needle plane electrode configuration was exposed to a high electrical DC-field and a laminar air flow up to 22 m/s. The needle was connected to a variable DC potential of up to 100 kV over a grounded plate in order to trigger different corona modes. The impact of the air flow on the space charges created in the vicinity of the electrode is evaluated by means of PD measurements in time domain. The results indicate that the wind increases the frequency and magnitude of partial discharges in the vicinity of the electrode due to an increased rate of space charge removal around the tip of the needle and in the gap. The positive polarity shows higher dependency on air flow compared to the negative polarity. It is shown that positive breakdown streamer corona can be extinguished if wind speeds of more than 14.3 m/s are applied to the electrode.</p>

Laminar air flow vertical or horizontal?

AORN Journal ◽  
1972 ◽  
Vol 16 (6) ◽  
pp. 72-76 ◽  
Author(s):  
Marie C Grounds
Keyword(s):  
Air Flow ◽  
Laminar Air Flow
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