http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Das Samiran (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
Das Dulal Chandra,Das Samiran 한국물리학회 2024 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.84 No.3
Higher-order dust–ion acoustic solitary waves are investigated theoretically for a multicomponent relativistic dusty plasma consisting of nonthermal ions, weakly relativistic electrons and mobile dust particles through reductive perturbation technique by deriving modifed Korteweg–de Vries (mKdV) equation. Amplitudes of relativistic dust–ion acoustic solitary waves are investigated for diferent initial streaming speed of ions, weakly relativistic electrons and dust particles and found that there is non-existence region of soliton for some initial streaming of ions as well as electrons. Interestingly, relativistic electron has a region of critical initial streaming speed at which amplitudes of the solitons are equal for diferent initial streaming of ions whereas for diferent initial streaming of electrons, the amplitudes of solitons become same after a certain value of initial streaming of ions, which is a salient feature of this investigation. It is also found that the amplitudes of the relativistic dust–ion acoustic solitary waves increase concavely with the increase in dust charges for smaller values of initial streaming of dust particles, whereas the growth of the same is concave for higher initial streaming of dust particles. The width of the relativistic dust–ion acoustic solitary wave is also investigated for diferent initial streaming of plasma particles.
-
Das Samiran,Das Dulal Chandra 한국물리학회 2023 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.83 No.4
Non-linear propagation of dust ion-acoustic (DIA) solitary waves in a multi-component plasma consisting of ions, Cairn’s distributed electrons and immobile dust has been investigated theoretically. Reductive Perturbation Technique (RPT) is used to derive Korteweg–de Vries (KdV) and modifed Korteweg–de Vries (mKdV) equations. Both compressive as well as rarefactive solitons (compressive in most of the situations) and only compressive mKdV solitons are found to exist for this plasma. Many interesting facts on amplitude as well as width of solitons are established by comparing KdV and mKdV solitons under the same set of diferent plasma parameters. The investigation is being done in two diferent modes and found that the non-thermal parameter (β) and the number of dust charge contained in a immobile dust particle (Zd) plays very important role in the formation of both KdV and mKdV solitons.
-
Pranav Chauhan,Soubhagya Ranjan Pradhan,Annada Das,Pramod Kumar Nanda,Samiran Bandyopadhyay,Arun K. Das 아세아·태평양축산학회 2019 Animal Bioscience Vol.32 No.2
Objective: Terminalia arjuna plant, specially its leaves, bark, and roots, are widely used in traditional herbal medicine due to presence of bioactive components and being a rich source of natural antioxidants. But its fruit has not been used for any such purposes despite its potential to retard oxidation. Hence, the antioxidant potential of Arjuna fruit extract (AFE) in retarding lipid and protein oxidation of raw ground pork was evaluated during refrigerated storage for 9 days. Methods: The AFEs were prepared using different solvents viz. ethanol (EH), water, ethanol: water (60:40) and methanol:hot water (60:40). The AFEs were analysed for total phenolic content (TPC), 2, 2-diphenyl-1-picrylhydrazyl radical scavenging activity and reducing power. Water extract (WE) and ethanol-water extract (EH-WE) were selected and incorporated at 1.0% into freshly minced pork meat and compared with a synthetic antioxidant, in retarding lipid and protein oxidation during storage. Results: The TPC in AFEs using different solvents ranged from 11.04 to 16.53 mg gallic acid equivalents/g and extracts exhibited appreciable scavenging activity ranging from 50.02% to 58.62%. Arjuna extracts significantly (p<0.05) improved the colour score of meat samples by reducing the formation of metmyoglobin during storage. Both the AFEs (WE and EH-WE) significantly (p<0.05) lowered the thiobarbituric acid reactive substances value, peroxide formation and formation of protein carbonyls in raw pork than control sample during storage. Upon sensory evaluation of all samples, it was found that AFE treatment could prolong the storage period of meat samples, without influencing the colour and odour score, up to 6 days. Conclusion: AFEs used at 1% improved the oxidative stability, colour and odour score and prolonged the refrigerated shelf life of ground pork up 6 days. Therefore, AFE could be explored as an alternative natural antioxidant in retarding lipid and protein oxidation in meat products.
ScienceON연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
