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- 저자 : Arun, Kanagaraj (검색결과 554 건)
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STUDY OF ROTATIONAL BAND STRUCTURE OF EVEN-EVEN 132;134SM NUCLEI
ARUN GUPTA,SURBHI GUPTA,SIMI GUPTA,SURAM SINGH,ARUN BHARTI 장전수학회 2021 Proceedings of the Jangjeon mathematical society Vol.24 No.4
The study of neutron-decient nuclei in the A130 mass region has been an interesting subject in nuclear structure physics as this region is considered to be transitional region. In the present work, the positive parity rotational band structure of even-even 132,134Sm up to the high spin states has been studied in a microscopic frame work of calculations known as Projected Shell Model (PSM). Yrast spectra for 132,134Sm have been obtained from the PSM calculations and has been found to be in good agreement with the available experimental data. Besides this, the present calculations have also reported the occurrence of back bending at the same spins at which experimental data shows in both the nuclei.
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Hot stage microscopy and its applications in pharmaceutical characterization
Kumar Arun,Singh Pritam,Nanda Arun 한국현미경학회 2020 Applied microscopy Vol.50 No.1
Hot stage microscopy (HSM) is a thermal analysis technique that combines the best properties of thermal analysis and microscopy. HSM is rapidly gaining interest in pharmaceuticals as well as in other fields as a regular characterization technique. In pharmaceuticals HSM is used to support differential scanning calorimetry (DSC) and thermo-gravimetric analysis (TGA) observations and to detect small changes in the sample that may be missed by DSC and TGA during a thermal experiment. Study of various physical and chemical properties such sample morphology, crystalline nature, polymorphism, desolvation, miscibility, melting, solid state transitions and incompatibility between various pharmaceutical compounds can be carried out using HSM. HSM is also widely used to screen cocrystals, excipients and polymers for solid dispersions. With the advancements in research methodologies, it is now possible to use HSM in conjunction with other characterization techniques such as Fourier transform infrared spectroscopy (FTIR), DSC, Raman spectroscopy, scanning electron microscopy (SEM) which may have additional benefits over traditional characterization techniques for rapid and comprehensive solid state characterization.
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Guava (Psidium guajava L.) Powder as an Antioxidant Dietary Fibre in Sheep Meat Nuggets
Verma, Arun K.,Rajkumar, V.,Banerjee, Rituparna,Biswas, S.,Das, Arun K. Asian Australasian Association of Animal Productio 2013 Animal Bioscience Vol.26 No.6
This study was conducted to explore the antioxidant potential and functional value of guava (Psidium guajava L.) powder in muscle foods. Guava powder was used as a source of antioxidant dietary fibre in sheep meat nuggets at two different levels i.e., 0.5% (Treatment I) and 1.0% (Treatment II) and its effect was evaluated against control. Guava powder is rich in dietary fibre (43.21%), phenolics (44.04 mg GAE/g) and possesses good radical scavenging activity as well as reducing power. Incorporation of guava powder resulted in significant decrease (p<0.05) in pH of emulsion and nuggets, emulsion stability, cooking yield and moisture content of nuggets while ash and moisture content of emulsion were increased. Total phenolics, total dietary fibre (TDF) and ash content significantly increased (p<0.05) in nuggets with added guava powder. Product redness value was significantly improved (p<0.05) due to guava powder. Textural properties did not differ significantly except, springiness and shear force values. Guava powder was found to retard lipid peroxidation of cooked sheep meat nuggets as measured by TBARS number during refrigerated storage. Guava powder did not affect sensory characteristics of the products and can be used as source of antioxidant dietary fibre in meat foods.
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Numerical Prediction of the Flow Characteristics of a Micro Shock Tube
Arun Kumar R,Abhilash Suryan,Heuy Dong Kim 한국추진공학회 2011 한국추진공학회 학술대회논문집 Vol.2011 No.11
Recently, micro shock tube is being extens ively used in various fi elds of engineering applications. The flow characteristics occurring in the micro shock tube may be significantly different from that of conventional macro shock tube due to very low Reynolds number and Knudsen number effects which are, in general, manifested in such flows of rarefied gas, solid-gas two-phase, etc. In these situations, Navier-Stokes equations cannot properly predict the micro shock tube flow. In the present study, a two-dimensional CFD method has been applied to simulate the micro shock tube, with slip velocity and temperature jump boundary conditions. The effects of wall thermal conditions on the unsteady flow in the micro shock tube were also investigated. The unsteady behaviors of shock wave and contact discontinuity were, in detail, analyzed. The results obta ined show much more attenuation of shock wave, compared with macro-shock tubes.
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Arun Asif,박성혁,Afaque Manzoor Soomro,Muhammad Asad Ullah Khalid,Abdul Rahim Chattikatikatuveli Salih,강보혜,Faheem Ahmed,김경환,최경현 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.98 No.-
In microfluidics, the emergingfield of microphysiological systems (MPS) is overcoming the challenge ofphysiological irrelevancy by animal models for drug discovery and development. Liver function iscritically influenced by drugs owing to its role in drug metabolism and detoxification. Human serumalbumin (HSA) is one of the most important secreted biomarkers which indicate normal liver function. Amicrofluidic albumin immunosensor was developed to be integrated with liver-on-a-chip MPS forcontinuous feedback over disease modeling and treatment. A gold-electrode based electrochemicalimmunosensor was established by anti-HSA antibody immobilization. The liver MPS was found to beefficient for live monitoring of disease modelling and drug treatment over the period of 6 days. Thesystem emulated and analyzed real-time toxicity modeling with HSA sensing. The detection limit ofintegrated sensor was 1 mg/ml with successive reproducibility. The proposed sensor was also validatedwith metabolic biomarkers’ assays. Molecular assays supported the sensor monitoring and depicted liverinjury and recovery. The liver MPS with combined albumin sensor chip may be a promising platform tomimic real-time drug assessment.
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China`s Search for Power and Its Impact on India
( Arun Sahgal ) 한국국방연구원 2003 The Korean Journal of Defense Analysis Vol.15 No.1
China`s aspirations of becoming a world power are well-stated. Consistent with this goal, China is seeking to enhance and maintain military power credible with such a position. Until it is able to complete this process and concurrently stabilize its economy and internal polity, China will continue to seek a period of peace and tranquility. However, its long-term strategy is clearly to become the dominant economic and military power in Asia and cognizable player in the world. China professes a policy of peace and friendliness toward India. However, it has been creating a ring of anti-Indian influences aimed at the strategic marginalization of India. China`s relations with the United States are marked by competition over influence in Asia-Pacific region. However, its strong economic linkages with the United States are likely to cushion adverse impact of irritants in their relations. China is also improving its relations with Russia with a view to obtain technology, arms and perhaps, strategic support against US hegemony. Chinese foreign policy demonstrates pragmatic linkages between its domestic priorities and external conduct. However, its growing stakes in the world will tend to make it behave in an increasingly benign manner. A revamped foreign policy will optimize India`s relations with China as indeed with the rest of the world.
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Arun Karnwal 경희대학교 융합한의과학연구소 2022 Oriental Pharmacy and Experimental Medicine Vol.22 No.3
Safely management of food spoilage and foodborne illness is primarily achieved by applying chemical additives that have adverse effects along with health risk, increment chemical in food, and reduced bacterial susceptibility to antimicrobials. In the present study, antimicrobial efficacy of extracts from 3 different flowers (Hibiscus rosa sinensis, Chrysanthemum indicum, and Calendula officinalis) was examined towards seven food poisoning bacterial strains, four gram-positive strains (Staphylococcus aureus MTCC 87, Bacillus cereus MTCC 430, Clostridium perfringens MTCC 450, Listeria monocytogenes MTCC 657), and three gram-negative strains (Escherichia coli MTCC 43, Salmonella typhi MTCC 1264 and Pseudomonas aeruginosa MTCC424) using well diffusion assay. Aqueous extracts from all three of the flowers were similarly efficient with variable antimicrobial efficiency against the examined bacterial strains, while ethanol and methanol extracts from C. officinalis were highly efficient against all tested pathogenic bacteria. Ethanolic extract of C. indicum was the most efficient flower extract after C. officinalis against C. perfringens, L. monocytogenes, and S. typhi. H. rosa sinensis ethanol extract exhibited bactericidal action against S. aureus, B. cereus, and P. aeruginosa. For most extracts, the minimum inhibitory concentration (MIC) ranged from 3.75 to 7.5% and minimum bactericidal concentration (MBC) of 1.87–3.75% except for C. perfringens, and L. monocytogenes those were less sensitive with MIC 20%, and MBC 20%. Such flower extracts, which are potentially efficient, would be utilized to manage foodborne illness and protect food items from spoilage and minimize safety hazards generated due to chemically preservatives.
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( Arun Karyampudi ),( Uday C Ghoshal ),( Rajan Singh ),( Abhai Verma ),( Asha Misra ),( Vivek A Saraswat ) 대한소화기기능성질환·운동학회(구 대한소화관운동학회) 2017 Journal of Neurogastroenterology and Motility (JNM Vol.23 No.2
Background/Aims Though nocturnal acid-breakthrough (NAB) is common in gastroesophageal reflux disease (GERD) patients, its clinical importance results from esophageal acidification, which has been shown to be uncommon. Ilaprazole, a long-acting proton pump inhibitor, may cause NAB infrequently. Accordingly, we studied prospectively, (1) frequency and degree of esophageal acidification during NAB, and (2) frequency and severity of NAB while on ilaprazole versus omeprazole. Methods Fifty-eight consecutive patients with GERD on once daily ilaprazole, 10 mg (n = 28) or omeprazole, 20 mg (n = 30) for > one month underwent 24-hour impedance-pH monitoring prospectively. NAB was defined as intra-gastric pH < 4 for > one hour during night, and esophageal acidification as pH < 4 for any duration. Nocturnal symptoms (heartburn, regurgitation, and chest pain) were also recorded. Results Of the 58 patients (age 35.5 [inter-quartile range 26.5-46.0] years, 38 [65.5%], 42 (72.4%) had NAB. Though patients with NAB had lower nocturnal intra-gastric pH than without (2.8 [1.9-4.1] vs 5.7 [4.6-6.8], P < 0.001), frequency and duration of nocturnal esophageal acidification (17/42 vs 4/16, P = 0.360 and 0.0 [0.0-1.0] vs 0.0 [0.0-0.3] minutes, P = 0.260, respectively) and symptoms were comparable (13/42 vs 6/16, P = 0.750). Though ilaprazole was associated with less NABs (1 [range 1-2, n = 19] vs 1 [range 1-3, n = 23], P = 0.010) than omeprazole, the frequency, duration, and mean intra-gastric pH during NAB were comparable (19/28 vs 23/30, P = 0.560; 117 [0-315] vs 159 [69-287] minutes, P = 0.500; 1.02 [0.7-1.4] vs 1.04 [0.44-1.3], P = 0.620, respectively). Conclusions Though NAB was common while patients were on a proton pump inhibitor, esophageal acidification was uncommon. Frequency and severity of NAB were comparable among patients on ilaprazole and omeprazole, except for the lesser number of NABs with ilaprazole. (J Neurogastroenterol Motil 2017;23:208-217)
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