http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Neha Sharma,Sunanda Sharda,Dheeraj Sharma,Vineet Sharma,P. B. Barman,S.C. Katyal,Pankaj Sharma,S. K. Hazra 대한금속·재료학회 2013 ELECTRONIC MATERIALS LETTERS Vol.9 No.5
Steady state current-voltage characteristics of the amorphous (Se80Te20)98Y2 (Y = Ag, Bi, Ge, Cd) semiconductors at different temperatures are reported. The measurements were performed using direct-current voltage bias to understand the basic conductivity mechanism and to evaluate the impact of each substituent on electrical response. The space charge limited conduction mechanism, and the density of states near Fermi level have been calculated. The difference in electrical response due to different substitutions in the glassy matrix is analyzed.
Neha Sharma,Sunanda Sharda,S.C. Katyal,Vineet Sharma,Pankaj Sharma 대한금속·재료학회 2014 ELECTRONIC MATERIALS LETTERS Vol.10 No.1
We report linear and non-linear optical properties of a new quaternary chalcogenide glass series Ge19-ySe63.8Sb17.2Tey (y = 0, 2, 4, 6, 8, 10). In linear optical properties; refractive index, extinction coefficient and the Tauc gap are reported and their variation with Te content has been discussed. In non-linear properties; third order nonlinear susceptibility and non-linear refractive index has been discussed. The variation of non-linear refractive index has also been reported with normalized photon energy. A correlation between the Tauc gap and nonlinear refractive index has been discussed. Results indicate that these materials may find applications in modern optical devices.
Neha Sharma,Deepshikha Gupta,박영서 한국식품과학회 2023 Food Science and Biotechnology Vol.32 No.4
Weissella bacteria are gram-positive, anaerobic, fermentative, and have probiotic potential. This study aimed to compare the genomes of W. cibaria YRK005 and W. confusa CCK931 isolated from young radish and kimchi, respectively. The genomic size of W. cibaria YRK005 and W. confusa CCK931 with GC content is 2.36 Mb (45%) and 2.28 Mb (44.67%), respectively. The genome study identified 92 and 83 CAZymes genes, respectively, for W. cibaria YRK005 and W. confusa CCK931, that are responsible for 26 and 27 glycoside hydrolases (GH) and 21 and 27 glycosyl transferases. Both species have one gene for carbohydrate esterases and three genes for carbohydrate-binding modules. The primary CAZymes found in both species that are involved in oligosaccharide utilization are GH1, GH2, GH30, GH13_30, GH13_31, GH42, GH43, and GH65. The study also details the production pathways for glycogen and folate. Both strains include a unique repertoire of genes, including hypothetical proteins, showing adaptability to diverse ecological niches and evolution over time.
Neha Sharma,Bimla Nehru 한국뇌신경과학회 2013 Experimental Neurobiology Vol.22 No.3
Parkinson’s disease (PD) a neurodegenerative disorder for which no preventive or long-term effective treatment strategies are available. Epidemiologic studies have failed to identify specific environmental, dietary or lifestyle risk factors for PD. However, oxidative stress in the SN is the most broadly accepted hypothesis for the etiopathology of PD. The Symptoms do not appear until there is a decline of striatal dopamine levels by 80% making it difficult to have early therapeutic interventions. Thus, the present experiment was designed to track down the sequential changes starting from the initiation of motor dysfunction and associated biochemical abnormality in rotenone based PD model. The study also evaluated the neuroprotective efficacy of vitamin E. Rats were treated with rotenone 2 mg/kg b.wt (s.c.) for 35 days. The level of dopamine decreased by 70~80% which was in turn reflected by marked deterioration in motor function such as (Total locomotor activity and catalepsy). Along with these the level of GSH and SOD declined significantly which was associated with elevated lipid peroxidation levels as much as by 60%.Vitamin E co-administration at a dose of 100 I.U/kg b.wt (i.m.) ameliorated rotenone induced changes in motor functions i.e Total locomotor activity and Catalepsy at the end of 5th week. Further, vitamin E supplementation significantly decreased lipid peroxidation and improved associated biochemical parameters i.e SOD and GSH level. Most interestingly the changes appeared as early as 3rd week suggesting that supplementation of vitamin E right at the beginning should be neuroprotective in PD.
Beyond probiotics: a narrative review on an era of revolution
Neha Sharma,강대경,백현동,박영서 한국식품과학회 2023 Food Science and Biotechnology Vol.32 No.4
Whether knowingly or unknowingly, humans have been consuming probiotic microorganisms through traditionally fermented foods for generations. Bacteria, like lactic acid bacteria, are generally thought to be harmless and produce many metabolites that are beneficial for human health. Probiotics offer a wide range of health benefits; however, their therapeutic usage is limited because they are living organisms. As a result, the focus on the health advantages of microbes has recently shifted from viable live probiotics to non-viable microbes made from probiotics. These newly emerging non-viable microbes include paraprobiotics, postbiotics, psychobiotics, nutribiotics, and gerobiotics. Their metabolites can boost physiological health and reveal the therapeutic effects of probiotics. This new terminology in microbes, their traits, and their applications are summarized in the present review.
Effect of Cynodon dactylon on rotenone induced Parkinson's disease
Sharma, Neha,Bafna, Pallavi 경희한의학연구센터 2012 Oriental Pharmacy and Experimental Medicine Vol.12 No.3
In the present study, the aqueous extract of Cynodon dactylon (AECD) Pers. (Graminae) was evaluated for anti-parkinson's activity in rats.The anti-parkinson's effect of AECD was studied against rotenone (2 mg/kg, s.c.) - induced parkinsons in rats. In this study, chronic administration of rotenone in rats (28 days) produced motor dysfunctions like catalepsy and muscle rigidity along with a reduction in locomotor activity. Rotenone administration was also found to generate oxidative stress in the brain as evident from an increase in the level of TBARS and decrease in the levels of SOD and GSH. Pretreatment with AECD resulted in a significant (p<0.001) decrease in catalepsy and muscle rigidity along with a significant (p<0.001) increase in locomotion as compared to the rotenone-treated control group. AECD treated rats also showed a reduction in the TBARS level and an increase in the GSH, SOD and CAT levels; thus reducing the oxidative stress in the brain of animals. The study thus proved that Cynodon dactylon treatment significantly attenuated the motor defects and also protected the brain from oxidative stress, both induced by rotenone. These results strongly indicate the possible therapeutic potential of Cynodon dactylon as an antioxidant in Parkinson's disease and other movement disorders.
Neha Sharma,Amit Dhiman,Surendra Kumar 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.5
Power-law shear-thinning fluid flow over a heated square bluff body is numerically investigated underaiding buoyancy mixed convection at low Reynolds numbers. Semi-explicit finite volume code is developed to solvethe governing equations along with the appropriate boundary conditions. Both aiding buoyancy and shear-thinningnatures are found to augment the heat transfer rate from the surface of the long square bar. In aiding buoyancy, thetotal drag coefficient is found to be more for the square cylinder than that of the circular cylinder, whereas the averagecylinder Nusselt number for the square cylinder is found to be lower than the circular one on equal side/diameter basis. Maximum augmentation in heat transfer is found to be approximately 20% with respect to forced convection. Finally, aheat transfer correlation is established by using the Colburn heat transfer factor.
Sharma Neha,Kumar Ravi,Jayabalan J. 한국물리학회 2021 Current Applied Physics Vol.21 No.-
Amplitude modulated Kelvin probe force microscopy was performed on molybdenum (Mo)-thin films deposited on Si(001) substrates by RF magnetron sputtering. Evolution of film microstructure from amorphous to crystalline was observed with increasing RF power from 25 W to 200 W. Spatial mapping of work function across the film surface revealed that the Mo-thin film deposited at 200 W possesses an average work function ~4.94 ± 0.06 eV while higher values were observed at lower RF powers. The genesis of distinct periodic changes in work function is attributed to the formation of the surface dipole layer associated with the adsorbates of different polarities (O2 /OH or H+). A phenomenological model is also presented to elucidate their effect.