Extraction of Veratrum nigrum L. with Microwave Irradiation and Ultrasonic Wave

Pyrazoline class of compounds serve as better moieties for an array of treatments, they have antibacterial, antifungal, antiinflammatory, antipyretic, diuretic, cardiovascular activities. Apart from these they also have anticancer activities. So, pertaining to its importance, many attempts are made to synthesize pyrazolines. Since conventional methods of organic synthesis are energy and time consuming. There are elaborate pathways for green and eco-friendly synthesis of pyrazoline derivatives including microwave irradiation, ultrasonic irradiation, grinding and use of ionic liquids which assures the synthesis of the same within much lesser time and by use of minimal energy

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Ultrasonic Wave Detection in Atmospheric Pressure Plasma Using Fraunhofer Diffraction Effect

PIERS Online ◽

10.2529/piers091220031926 ◽

2010 ◽

Vol 6 (7) ◽

pp. 636-639

Author(s):

Toshiyuki Nakamiya ◽

Fumiaki Mitsugi ◽

Shota Suyama ◽

Tomoaki Ikegami ◽

Yoshito Sonoda ◽

...

Keyword(s):

Ultrasonic Wave ◽

Atmospheric Pressure ◽

Atmospheric Pressure Plasma ◽

Diffraction Effect ◽

Fraunhofer Diffraction ◽

Wave Detection ◽

Pressure Plasma

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Pengaruh Variasi Waktu Paparan Gelombang Ultrasonik dalam Mengurangi Jumlah Bakteri coliform pada Sampel Air Sungai Kahayan

Risalah Fisika ◽

10.35895/rf.v4i1.168 ◽

2020 ◽

Vol 4 (1) ◽

pp. 9-13 ◽

Cited By ~ 1

Author(s):

Neny Kurniawati, Kerelius, Sunariyati ◽

Luqman Hakim, Dyah Ayu Pramoda Wardani, Widya Krestina ◽

Dwi Tyas Setiawan, Ferry Purwanto, Diah K. Fatmala

Keyword(s):

Water Treatment ◽

River Water ◽

Ultrasonic Wave ◽

Exposure Time ◽

Water Samples ◽

Sampling Technique ◽

Wave Exposure ◽

Test Results ◽

Time Data ◽

Grab Sampling

Abstrak – Penelitian ini bertujuan untuk mengkaji pengaruh waktu paparan gelombang ultrasonik terhadap pengurangan jumlah koloni bakteri coliform pada sampel air sungai Kahayan. Pengambilan sampel air sungai dilakukan dengan teknik Grab Sampling menggunakan alat Kemmerer Sampler. Sampel air yang didapatkan diberikan paparan gelombang ultrasonik secara langsung, tanpa merubah kondisi lingkungan awal. Waktu paparan divariasikan pada 1 jam, 2 jam, 3 jam, 4 jam, dan 5 jam dengan frekuensi 40 kHz untuk memperoleh data waktu optimum. Uji coliform dilakukan dengan metode MPN, dengan tahapan uji pendugaan, uji penegasan, dan perhitungan koloni. Hasil uji MPN 24 jam setelah paparan menunjukkan bahwa penggunaan ultrasonik sebagai antibateri dapat optimum ketika diberikan paparan dengan waktu 3 jam, dengan efisiensi 96%. Kata kunci: antibakteri, coliform, ultrasonik, water treatment, sungai Kahayan Abstract – This study aims to examine the effect of ultrasonic wave exposure time on reducing the number of coliform bacterial colonies in the Kahayan river water samples. River water sampling is done using the Grab Sampling technique using the Kemmerer Sampler tool. The water samples obtained were given direct ultrasonic wave exposure, without changing the initial environmental conditions. The exposure time is varied in 1 hour, 2 hours, 3 hours, 4 hours and 5 hours with a frequency of 40 kHz to obtain optimum time data. Coliform test was carried out by the MPN method, with the stages of the estimation test, affirmation test, and colony calculation. The MPN test results 24 hours after exposure showed that the use of ultrasonic as an antibody can be optimum when given exposure with a time of 3 hours, with an efficiency of 96%.Keywords : antibakterial, coliform, ultrasonic, water treatment, Kahayan river

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Growth Process of SiC Grains Prepared by High-energy Microwave Irradiation

Journal of Inorganic Materials ◽

10.3724/sp.j.1077.2014.13237 ◽

2014 ◽

Vol 29 (2) ◽

pp. 149-154 ◽

Cited By ~ 2

Author(s):

Shan HUANG ◽

Ji-Gang WANG ◽

Song LIU ◽

Fan LI

Keyword(s):

Microwave Irradiation ◽

Growth Process ◽

High Energy

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