scholarly journals Control of airborne nickel welding fumes by means of a vertical laminar air flow system

1980 ◽  
Author(s):  
T.C. Helms
Keyword(s):  
Flow System ◽  
Air Flow ◽  
Welding Fumes ◽  
Laminar Air Flow

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 The effect of obstructions and thermals in laminar-flow systems

1974 ◽  
Vol 72 (3) ◽  
pp. 415-423 ◽  
Author(s):  
W. Whyte ◽  
B. H. Shaw
Keyword(s):  
Laminar Flow ◽  
Special Reference ◽  
Flow System ◽  
Air Flow ◽  
Operating Rooms ◽  
Flow Systems

SUMMARYThe influence of obstructions and thermals on the air flow in unidirectional or laminar flow systems was studied with special reference to operating rooms. It was shown that thermals induced in the operating rooms would have little influence in the normal laminar-flow system. The importance however of obstructions such as operating lamps and personnel was shown.

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>

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