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Brain Hologram Visualization for Diagnosis of Tumors using Graphic Imaging
Nam, Jenie,Kim, Young Jae,Lee, Seung Hyun,Kim, Kwang Gi Korea Multimedia Society 2016 The journal of multimedia information system Vol.3 No.3
This research paper examines the usage of graphic imaging in Holographic Projections to further advance the medical field. It highlights the importance and necessity of this technology as well as avant-garde techniques applied in the process of displaying images in digital holography. This paper also discusses the different types of applications for holograms in society today. Different tools were utilized to transfer a set of a cancer patient's brain tumor data into data used to produce a 3D holographic image. This image was produced through the transfer of data from one program to another. Through the use of semi-automatic segmentation through the seed region method, we were able to create a 3D visualization from Computed Tomography (CT) data.
정창희,Jenie Yoonoo Hwang,신미선,유지희,김은희,배성진,양동현,강준원,박중열,이우제,김홍규 대한의학회 2013 Journal of Korean medical science Vol.28 No.5
Despite the noninvasiveness and accuracy of multidetector computed tomography (MDCT),its use as a routine screening tool for occult coronary atherosclerosis is unclear. We investigated whether the ratio of apolipoprotein B (apoB) to apolipoprotein A1 (apoA1), an indicator of the balance between atherogenic and atheroprotective cholesterol transport could predict occult coronary atherosclerosis detected by MDCT. We collected the data of 1,401 subjects (877 men and 524 women) who participated in a routine health screening examination of Asan Medical Center. Significant coronary artery stenosis defined as > 50% stenosis was detected in 114 subjects (8.1%). An increase in apoB/A1 quartiles was associated with increased percentages of subjects with significant coronary stenosis and noncalcified plaques (NCAP). After adjustment for confounding variables, each 0.1increase in serum apoB/A1 was significantly associated with increased odds ratios (ORs) for coronary stenosis and NCAP of 1.23 and 1.18, respectively. The optimal apoB/A1 ratio cut off value for MDCT detection of significant coronary stenosis was 0.58, which had a sensitivity of 70.2% and a specificity of 48.2% (area under the curve, 0.61; 95% CI, 0.58-0.63, P < 0.001). Our results indicate that apoB/A1 ratio is a good indicator of occult coronary atherosclerosis detected by coronary MDCT.
Putri, Herwandhani,Jenie, Riris Istighfari,Handayani, Sri,Kastian, Ria Fajarwati,Meiyanto, Edy Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.5
A salt compound of a curcumin analogue, potassium pentagamavunon-0 (K PGV-0) has been synthesized to improve solubility of pentagamavunon-0 which has been proven to have anti-proliferative effects on several cancer cells. The purpose of this study was to investigate cytotoxic activity and metastasis inhibition by K PGV-0 alone and in combination with achemotherapeutic agent, doxorubicin (dox), in breast cancer cells. Based on MTT assay analysis, K PGV-0 showed cytotoxic activity in T47D and 4T1 cell lines with $IC_{50}$ values of $94.9{\mu}M$ and $49.0{\pm}0.2{\mu}M$, respectively. In general, K PGV-0+dox demonstrated synergistic effects and decreased cell viability up to 84.7% in T47D cells and 62.6% in 4T1 cells. Cell cycle modulation and apoptosis induction were examined by flow cytometry. K PGV-0 and K PGV-0+dox caused cell accumulation in G2/M phase and apoptosis induction. Regarding cancer metastasis, while K PGV-0 alone did not show any inhibition of 4T1 cell migration, K PGV-0+dox exerted inhibition. K PGV-0 and its combination with dox inhibited the activity of MMP-9 which has a pivotal role in extracellular matrix degradation. These results show that a combination of K PGV-0 and doxorubicin inhibits cancer cell growth through cell cycling, apoptosis induction, and inhibition of cell migration and MMP-9 activity. Therefore, K PGV-0 may have potential for development as a co-chemotherapeutic agent.
Climate Change Disclosure Performance of Pharmaceutical Industry of Bangladesh
DAS, Shaily,JENI, Fatema Akter Korea Distribution Science Association 2021 Asian journal of business environment Vol.11 No.4
Purpose: This study is designed to investigate the extent and nature of climate change disclosure of listed pharmaceutical companies of Bangladesh. Research design, data and methodology: In order to perform this research, a content analysis methodology is used. A climate change disclosure index is constructed to examine 12 different climate change disclosure issues. Information is collected from the annual reports of 29 pharmaceutical companies listed on the Dhaka Stock Exchange for the year 2019. Results: This study finds that only 48.28% of the sample companies provided disclosure on at least one issue regarding climate change. 'Energy savings' is the mostly disclosed issue whereas 'Pollution control expenditure', 'Biodiversity conservation initiatives' are the least disclosed issues. Research implication: This study concludes 64.29% of the companies examined, use less than five sentences for climate change disclosure, which depicts unsatisfactory disclosure practices regarding climate change issues. Study findings would be helpful for different industries of Bangladesh to implement efficient climate change reporting Practice. Future studies can be conducted on other industries to obtain more comprehensive result.
Climate Change Disclosure Performance of Pharmaceutical Industry of Bangladesh
Shaily DAS,Fatema Akter JENI 한국유통과학회 2021 Asian Journal of Business Environment (AJBE) Vol.11 No.4
Purpose: This study is designed to investigate the extent and nature of climate change disclosure of listed pharmaceutical companies of Bangladesh. Research design, data and methodology: In order to perform this research, a content analysis methodology is used. A climate change disclosure index is constructed to examine 12 different climate change disclosure issues. Information is collected from the annual reports of 29 pharmaceutical companies listed on the Dhaka Stock Exchange for the year 2019. Results: This study finds that only 48.28% of the sample companies provided disclosure on at least one issue regarding climate change. ‘Energy savings’ is the mostly disclosed issue whereas ‘Pollution control expenditure’, ‘Biodiversity conservation initiatives’ are the least disclosed issues. Research implication: This study concludes 64.29% of the companies examined, use less than five sentences for climate change disclosure, which depicts unsatisfactory disclosure practices regarding climate change issues. Study findings would be helpful for different industries of Bangladesh to implement efficient climate change reporting Practice. Future studies can be conducted on other industries to obtain more comprehensive result.
Axial Turbine Performance Estimation During Dynamic Operations
Razvan Nicoara,Valeriu Vilag,Jeni Vilag,Zoltan Kolozvary 한국항공우주학회 2021 International Journal of Aeronautical and Space Sc Vol.22 No.2
During service, a turbine engine undergoes frequently dynamic operations. Because of the changes in mass flow, temperature, pressure, as well as the different reaction of the components of turbine to these changes, the turbine performances may vary significantly. It is critical to understand and quantify these variations to design and integrate the turbine to the engine. This paper presents a study of the performances and the variation of the performances for an axial gas turbine across its operating envelope. Numerical simulations are used to describe the flow across the turbine and to estimate the turbine maps. Using theoretical charts for typical turbine thermal expansion, the variation of tip clearance across the working line is approximated. Because of the changes of the tip clearance, using a single geometry may not supply relevant information during real dynamic operations. In order to eliminate these additional errors in the numerical study, a number of turbines maps are recalculated for different tip clearances, respectively to engine regimes. With the resulting data, the working line is recalculated across multiple maps. The comparison between the two working lines is presented as well as the study of performance variation of the turbine across the operation envelope and the influence of tip clearance at different regimes.
( Mariel Dianne Velasco ),( Geraldine Claire Floro ),( Adrian Manuel Fausto ),( Jenis Emmanuel Camenforte ),( Felix Zano ) 대한간학회 2017 춘·추계 학술대회 (KASL) Vol.2017 No.1
Aims: Variceal hemorrhage is a life-threatening complication of cirrhosis. Combination of endoscopic band ligation (EBL) and nonselective beta-blockers (NSBB) is the current preferred secondary prophylaxis. This meta-analysis aims to determine if transjugular intrahepatic portosystemic shunting (TIPS) is comparable to EBL + NSBB in the prevention of a recurrent variceal bleed. Methods: Included studies were randomized trials where treatment groups underwent TIPS after a variceal bleed. The outcomes measured were recurrence of variceal bleeding, hepatic encephalopathy and mortality. A search of PubMed, ScienceDirect and Cochrane Library for articles up to February 2017 was done using the terms “variceal bleeding”, “varix”, “transjugular intrahepatic portosystemic shunt”, and “TIPS”. Analysis of study data was carried out through RevMan 5.3. Pooled efficacy of the intervention was done by estimating the risk ratio and 95% confidence interval and heterogeneity assessed by evaluating chi-square and I2 tests. Sensitivity analysis was performed to determine cause of heterogeneity. Results: Four studies were included. The risk ratio for recurrence of variceal bleeding was 0.33 (95% CI 0.12 - 0.91), showing benefit for the use of TIPS. The p-value for the chi-square test was 0.06, showing no statistically significant heterogeneity. For the outcome of hepatic encephalopathy, RR was 1.17 (95% CI 0.71 - 1.94). There was a trend towards benefit with the use of TIPS in the prevention of mortality (RR 0.78, 95% CI 0.46 - 1.32). Conclusions: TIPS is a feasible alternative to EBL + NSBB for the secondary prevention of variceal bleeding.