http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Kumar, Yogesh,Sharma, Pranav,Bhatt, Neeraj,Hooda, Kusum Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.2
Hepatocellular cancer is a very common cause of cancer related deaths worldwide. Only 30-40% of patients present with early-stage disease open to curative treatments, such as resection or transplantation, while others can only undergo local therapies or palliative care. Various trans-arterial approaches have been used for treatment of hepatocellular carcinoma in patients who need a down-staging to liver transplantation, and who are not candidates for transplantation or radiofrequency ablation. Transarterial chemoembolization (TACE), transarterial embolization (TAE), drug-eluting beads, and radioembolization have been used for locoregional control, and have been shown to prolong the overall survival when compared with supportive care. In this review, we discuss patient selection, pre- and post-procedure imaging, techniques, safety, and clinical outcomes related to these therapies. Newer advances with future directions in various fields related to trans-arterial therapies are also discussed.
Uma,Yogesh C. Sharma,Sushmita Banerjee 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.4
A low cost activated carbon was synthesized from coconut coir and was applied for the removal of malachite green (MG) from its aqueous solutions. Characterization of the adsorbent was carried out and BET surface area of the adsorbent was found to be 205.27 m2/g. The process of removal of MG was better governed by second order kinetics with a rate constant of 0.21 g mgˉ1 minˉ1 at 323 K. The coefficient of mass transfer was found to be 3.70 x10ˉ5 cm sˉ1. The value of DG8 was found to be negative indicating feasibility and spontaneity of the adsorption process.
Agarwal, Radhe,Sharma, Yogesh,Hong, Seungbum,Katiyar, Ram S IOP 2018 Journal of physics. D, applied physics Vol.51 No.27
<P>We are reporting on the improved ferroelectric and photovoltaic properties of (Nd<SUP>3+</SUP>, V<SUP>5+</SUP>) co-doped (Bi<SUB>0.95</SUB>Nd<SUB>0.05</SUB>)(Fe<SUB>1−<I>x</I> </SUB>V<SUB> <I>x</I> </SUB>)O<SUB>3</SUB> (BNFVO) (<I>x</I> = 0.01, 0.03) thin films grown by PLD. BNFVO thin films showed reduced leakage current, lower optical bandgap, and improved ferroelectricity compared to BFO films, which can be explained by valance change and extinguishing oxygen vacancies due to the doping effect. Piezoresponse force microscopy measurements showed an improved domain back switching in doped thin films indicating that the suppression of oxygen vacancies offset the effect of polarization flipping caused by doping. Further, we found a relatively stable and enhanced photovoltaic effect in BNFVO films with an order of magnitude higher photocurrent and almost doubled photovoltage in comparison to BFO films, which can be explained by less recombination between hopping electrons and oxygen vacancies. Our results demonstrate the significance of dopant selection to suppress the oxygen vacancies for improved ferroelectric and photovoltaic properties of BFO films.</P>
Deepak Gusain,Yogesh Chandra Sharma,Varsha Srivastava 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.3
Studies on the removal of copper by adsorption on modified sand have been investigated. The adsorbentwas characterized by XRD, FTIR and SEM. Removal of Cu was carried out in batch mode. The values ofthermodynamic parameters namely DG0, DH0 and DS0 at 25℃ were found to be -0.230 kcal-1 mol-1,+4.73 kcal-1 mol-1 and +16.646 cal K-1 mol-1, respectively. The process of removal was governed bypseudo second order rate equation and value of k2 was found to be 0.122 g mg-1 min-1 at 25℃. Theresultant data can serve as baseline data for designing treatment plants at industrial scale.
Agarwal, Radhe,Sharma, Yogesh,Chang, Siliang,Pitike, Krishna C.,Sohn, Changhee,Nakhmanson, Serge M.,Takoudis, Christos G.,Lee, Ho Nyung,Tonelli, Rachel,Gardner, Jonathan,Scott, James F.,Katiyar, Ram S American Physical Society 2018 Physical review. B Vol.97 No.5
<P>Tin titanate (SnTiO3) has been notoriously impossible to prepare as a thin-film ferroelectric, probably because high-temperature annealing converts much of the Sn2+ to Sn4+. In the present paper, we show two things: first, perovskite phase SnTiO3 can be prepared by atomic-layer deposition directly onto p-type Si substrates; and second, these films exhibit ferroelectric switching at room temperature, with p-type Si acting as electrodes. X-ray diffraction measurements reveal that the film is single-phase, preferred-orientation ferroelectric perovskite SnTiO3. Our films showed well-saturated, square, and repeatable hysteresis loops of around 3 mu C/cm(2) remnant polarization at room temperature, as detected by out-of-plane polarization versus electric field and field cycling measurements. Furthermore, photovoltaic and photoferroelectricity were found in Pt/SnTiO3/Si/SnTiO3/Pt heterostructures, the properties of which can be tuned through band-gap engineering by strain according to first-principles calculations. This is a lead-free room-temperature ferroelectric oxide of potential device application.</P>
Pandey, Lalit K.,Sharma, Yogesh Chandra,Park, Jihae,Choi, Soyeon,Lee, Hojun,Lyu, Jie,Han, Taejun Elsevier 2018 Aquatic toxicology Vol.194 No.-
<P><B>Abstract</B></P> <P>The aims of this study were to assess the biodiversity of periphytic diatom assemblages in fresh, brackish and marine waterbodies of Korea, and to assess the effect of environmental and anthropogenic factors on parameters such as the quantity and biovolume of lipid bodies and deformations of diatoms as early warning measures of anthropogenic impact. Diatom samples were collected from 31 sites (14 freshwater, 10 brackish and 7 marine), which included less impacted (upstream) and impacted (downstream) sites in each water type. Our results showed higher abundance and biodiversity of periphytic diatoms at the less impacted sites in terms of species richness, Shannon index, cell count and biovolume of the communities than at the impacted sites for freshwater and estuarine sites, but not for marine sites. 84 diatom species were noted in freshwater, 80 in brackish water and 40 in marine waters. In comparison to diatoms of the impacted sites, those of less impacted freshwater, brackish and marine sites had less lipid bodies (also less biovolume) and a lower percentage of teratological frustules, and showed more mobile forms in the community. Principal component analysis (PCA) also showed clear segregation of impacted from less impacted sites by the extent of the presence of lipid bodies (higher both in number and biovolume) and deformities in diatom frustules. Pearson correlation analysis revealed that lipid body induction and deformities were positively correlated with metals (Cd, Co, Cr, Cu, Fe, Pb and Zn) and nutrients (total phosphorus and total nitrogen), whereas they showed negative correlation with salinity, dissolved oxygen, suspended solutes and pH. Life-forms, lipid bodies and deformities in diatoms may be an effective biomonitoring tool for assessing biological effects of pollutants in non-marine aquatic ecosystems in Korea.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Diversity of periphytic diatoms from fresh, brackish and marine waterbodies from same biogeographical region was assessed. </LI> <LI> Taxonomical parameters of diatoms effectively differentiate impacted sites from less-impacted one. </LI> <LI> Lipid bodies and deformities in diatoms effectively defines the ecological health of fluvial ecosystem. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
On the Optical Properties of Ag+15 Ion-beam-irradiated TiO2 and SnO2 Thin Films
Hardeep Thakur,K. K. Sharma,Ravi Kumar,Pardeep Thakur,Yogesh Kumar,Abhinav Pratap Singh,Sanjeev Gautam,채근화 한국물리학회 2012 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.61 No.10
The effects of 200 MeV Ag<sup>+15</sup> ion irradiation on the optical properties of TiO<sub>2</sub> and SnO<sub>2</sub> thin films prepared by RF magnetron sputtering technique were investigated. These films were characterized by the UV-vis spectroscopy and it was observed that with increase in irradiation fluence the transmittance for the TiO<sub>2</sub> films systematically increases while that for SnO<sub>2</sub> decreases. Absorption spectra of the irradiated samples showed a minor changes in indirect bandgap from 3.44 to 3.59 eV for TiO<sub>2</sub> while that for SnO<sub>2</sub> significant modifications in the direct bandgap from 3.92 to 3.6 eV were observed on increasing irradiation fluence. The observed modifications in the optical properties of both TiO<sub>2</sub> and SnO<sub>2</sub> systems with irradiation can be attributed to controlled structural disorder/defects in the system.
Nasreen Sultana Quadri,Kusum Yadav,Yogesh Kumar Sharma International Journal of Computer ScienceNetwork S 2024 International journal of computer science and netw Vol.24 No.2
Cloud computing is a technology for delivering information in which resources are retrieved from the internet through a web-based tools and applications, rather than a direct connection with the server. It is a new emerging computing based technology in which any individual or organization can remotely store or access the information. The structure of cloud computing allows to store and access various information as long as an electronic device has access to the web. Even though various merits are provided by the cloud from the cloud provides to cloud users, it suffers from various flaws in security. Due to these flaws, data integrity and confidentiality has become a challenging task for both the storage and retrieval process. This paper proposes a novel approach for data protection by an improved auditing based methodology in cloud computing especially in the process of cloud storage. The proposed methodology is proved to be more efficient in auditing the threats while storing data in the cloud computing architecture.
( Sunil Taneja ),( Ajay Duseja ),( Arka De ),( Vivek Kumar ),( Raja Ramachandran ),( Ashish Sharma ),( Radha K Dhiman ),( Krishan L Gupta ),( Yogesh Chawla ) 대한간학회 2017 춘·추계 학술대회 (KASL) Vol.2017 No.1
Background and Aims: The data regarding the treatment of chronic hepatitis C (CHC) in renal transplant recipients is lacking from the Asia-Pacific region. Aim of the present study was to assess the safety and efficacy of directly acting antivirals (DAAs) in the treatment of CHC infection in renal transplant recipients. Methods: A total of 47 HCV infected renal transplant recipients were enrolled in this real life observational cohort analysis between March 2015 and September 2016. Presence of hepatic fibrosis/cirrhosis was assessed on transient elastography (Fibroscan). Fourteen patients were treated with Sofosbuvir and Ribavirin for 24 weeks. Twenty-two patients received Sofosbuvir and Ledipasvir and twelve patients received Sofosbuvir and Daclatasvir with (n=3) or without (n=31) Ribavirin for 12 or 24 weeks depending on genotype and underlying cirrhosis. Data was analyzed for safety and treatment efficacy [sustained virological response at 12 weeks (SVR12)]. Results: The mean baseline HCV RNA concentration in the whole group was 7.38 x 106 IU/ml (1.23 x 104- 6.36 X 107). The SVR12 rates were 100% in all groups except in the Sofosbuvir and Ribavirin group (86%). Transient Elastography revealed minimal or no fibrosis (F0-F1) in 31 (65.96%) patients, moderate fibrosis (F2) in 11 (23.4%) patients and cirrhosis in 5 (10.64%) patients. The only serious adverse effect was anemia observed in 8 (57%) patients in the Sofosbuvir and Ribavirin group. Conclusions: DAAs including Sofosbuvir, Daclatasvir and Ledipasvir with or without ribavirin are safe and effective for the treatment of chronic hepatitis C in renal transplant recipients