The accuracy of cervical cancer and cervical intraepithelial neoplasia diagnosis with loop electrosurgical excisional procedure under colposcopic vision

Komsun Suwannarurk,Sutatip Bhamarapravati,Yuthadej Thaweekul,Karicha Mairaing,Yenrudee Poomtavorn,Junya Pattaraarchachai 대한부인종양학회 2009 Journal of Gynecologic Oncology Vol.20 No.1

Objective: The colposcopic vision guided loop electrosurgical excisional procedure (LEEP) was studied for the effective diagnosis of cervical cancer and cervical intraepithelial neoplasia (CIN). Methods: A total of 199 patients participated in this study. Individual cases were from gynecologic outpatients at Thammasat University Hospital, Thailand. These had diagnoses for CIN and were selected for treatment with colposcopic guided LEEP. The average age of patients in this study was 45. Menopausal women represented 31%, (61/199) of the patients. The most frequently found Pap smear result among these women (44%, 88/199), was that of high-grade squamous intraepithelial lesion. The next most frequent Pap smear result (32%, 64/199) was low-grade squamous intraepithelial lesion. Patients’ medical records and outcomes were evaluated for consistency of pathological examination between colposcopic directed biopsy and LEEP. Discrepancies between initial diagnosis and the final diagnosis were also analyzed. Results: The colposcopic guided LEEP accurately determined 100% of the cervical cancer cases and 84.8 % of the high-grade squamous intraepithelial lesion cases. Involvement of the ectocervical or endocervical margin regions was found to be 5% and 10% respectively, in this study. Excessive bleeding complication, either during the excision and/or postoperative recovery was found in 3% and 6% of cases, respectively. Conclusion: LEEP under colposcopic vision is a recommended technique for ambulatory management of precancerous lesion and early diagnosis of cervical cancer. This technique significantly reduces rate of positive ectocervical cone margin involvement. Objective: The colposcopic vision guided loop electrosurgical excisional procedure (LEEP) was studied for the effective diagnosis of cervical cancer and cervical intraepithelial neoplasia (CIN). Methods: A total of 199 patients participated in this study. Individual cases were from gynecologic outpatients at Thammasat University Hospital, Thailand. These had diagnoses for CIN and were selected for treatment with colposcopic guided LEEP. The average age of patients in this study was 45. Menopausal women represented 31%, (61/199) of the patients. The most frequently found Pap smear result among these women (44%, 88/199), was that of high-grade squamous intraepithelial lesion. The next most frequent Pap smear result (32%, 64/199) was low-grade squamous intraepithelial lesion. Patients’ medical records and outcomes were evaluated for consistency of pathological examination between colposcopic directed biopsy and LEEP. Discrepancies between initial diagnosis and the final diagnosis were also analyzed. Results: The colposcopic guided LEEP accurately determined 100% of the cervical cancer cases and 84.8 % of the high-grade squamous intraepithelial lesion cases. Involvement of the ectocervical or endocervical margin regions was found to be 5% and 10% respectively, in this study. Excessive bleeding complication, either during the excision and/or postoperative recovery was found in 3% and 6% of cases, respectively. Conclusion: LEEP under colposcopic vision is a recommended technique for ambulatory management of precancerous lesion and early diagnosis of cervical cancer. This technique significantly reduces rate of positive ectocervical cone margin involvement.

Incidental Finding of Abnormal Cervical Pathology in Hysterectomy Specimens after Normal Preoperative Papanicolaou Smears in Thammasat University Hospital

Chundarat, Pong-Anan,Suwannarurk, Komsun,Bhamarapravatana, Kornkarn,Pattaraarchachai, Junya,Thaweekul, Yuthadej,Mairaing, Karicha,Poomtavorn, Yenrudee Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.14

Background: To investigate abnormal cervical histopathology (ACH) from hysterectomy specimens with normal preoperative Papanicolaou (Pap) smears. Materials and Methods: Medical records from May 2009 to April 2012 were retrospectively reviewed of subjects from whom hysterectomy specimens were taken in Thammasat University Hospital. All had normal preoperative Pap smears. ACH was the primary outcome. A p-value less than 0.05 was considered significant. A total of 483 subjects with an average age of 50.5 years were recruited. Benign cases of enlarged uterus and pelvic mass were present in 94% (430/483). Endometrial and ovarian cancer were found at 6.2 and 4.7%, respectively. In hysterectomy specimens there were 19 (4%) cases of ACH. Silent ACH with benign disease, endometrial and ovarian cancers were 1.2% (5/430), 33.3% (10/30) and 17.4% (4/23), respectively. The negative predictive value (NPV) and false negative rate of Pap smears were 96 and 4%, respectively. ACH in malignant cases were 27.9% (12/43) and 20% (2/10) in adequate (APS) and inadequate (IPS) Pap collection groups, respectively. ACH in benign condition were 0.68% (2/292) and 2.2% (3/138) in APS and IPS, respectively. ACH was more often found in hysterectomy specimens with indication of malignancy than benign conditions with statistical significance. One third of preoperative stage I endometrial cancer cases had cervical involvement. Conclusions: Silent ACH in normal preoperative Pap smear was 4 %. Inadequate Pap smear collection is still the major problem in this study. Reducing inadequate Pap smear collection could reduce the false negative rate.

A review on recent advances in the treatment of dye-polluted wastewater

Maira Shabir,Muhammad Yasin,Murid Hussain,Iqrash Shafiq,Parveen Akhter,Abdul-Sattar Nizami,전병훈,Young-Kwon Park 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.112 No.-

The textile effluent has an unfavorable effect on the waterbodies as well as on the human health due tothe poor penetration of light by increased turbidity and higher oxygen demands. Therefore, the treatmentof dye-polluted wastewater is gaining an urgent attention. This review emphasizes on the sate-of-the-arttechnologies that have been developed for treating dye-polluted wastewater, including chemical, physical,and biological techniques alongside their benefits, challenges, and upcoming prospects. The studyconcludes that the single process alone may not be appropriate for the treatment of a range of dyepollutedwastewaters and approaching the quality demands as these technologies requires more timeand are complex. Literature exhibiting a range of approaches for treating large volumes of effluents withoutproducing secondary pollutants are reviewed. Moreover, the ecological impact was among the mainconcern due to the loss of catalysts and the production of waste sludge. On the other hand, reusability andregeneration are the integrated strategies to deal with such limitations. This review also provides adetailed environmental and techno-economic analysis, life cycle assessment, and practical implications. Moreover, the key bottlenecks requiring a major consideration concerning the universal appreciation ofhybrid frameworks are emphasized.

Carbon nanotubes loaded N,S-codoped TiO2: Heterojunction assembly for enhanced integrated adsorptive-photocatalytic performance

Maira Shabir,Nasir Shezad,Iqrash Shafiq,Ibrahim M. Maafa,Parveen Akhter,Kshaf Azam,Ashfaq Ahmed,See Hoon Lee,Young-Kwon Park,Murid Hussain 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.105 No.-

A visible-light active N,S-codoped TiO2 incorporated with carbon nanotubes (CNTs) was synthesized by amulticomponent heterojunction scheme. The synthesized photocatalysts was examined by several analysistechniques. The conventional TiO2, N-doped TiO2, TiO2/CNT and N,S-codoped TiO2 were also synthesized,characterized, and integrated adsorptive-photocatalytic degradation rates were subsequentlycompared and assessed, for comparative purposes as reference photocatalysts. The parametric studywas also carried out to investigate the effect of various operational factors, such as solution pH, the photocatalystloading and initial concentration of dye solution, on the adsorptive-photocatalytic performance. The best activity performance was attained with the N,S-TiO2/CNTs nanocomposite due to thesynergistic effect of ternary components caused by the incorporation of dopants and CNTs in TiO2 lattice,providing a high number of adsorption sites and facilitating the effective separation of photogeneratedcharge carriers and minimal recombination rates. N,S-TiO2/CNTs exhibited around three times higherphotocatalytic performance than that of the binary composites, i.e., N-TiO2, TiO2/CNTs, N,S-TiO2, andabout four times higher than the conventional TiO2. Furthermore, the superior nanocomposites were alsoinvestigated for their recyclability for five consecutive cycles.

Deep Graph Convolutional Network Approach for Traffic Flow Prediction

Maira Khalid,Ahmed Raza Mohsin,Jehad Ali,Byeong-hee Roh 한국통신학회 2023 한국통신학회 학술대회논문집 Vol.2023 No.2

Восприятие корейцев-переселенцев русскими с конца XIX века по 1910 г.

Maira M. Surzhik 서울대학교 러시아연구소 2018 러시아연구 Vol.28 No.2

Восприятие корейцев русскими в конце XIX – начале XX века было основано на рапортах представителей военной администрации Уссурийского края, отчетах и очерках путешественников и ученых, публикациях в газетах, рассказах очевидцев. Первые сведения о корейцах были положительными. Многие из таких заметок были основаны на очерках Н. Пржевальского. Со временем восприятие корейцев стало меняться на негативное. Нарастание негативного отношения к корейцам началось с назначения на должность военного губернатора П.Ф. Унтербергера, имевшего националистические взгляды. Такая позиция стала отражаться в публикуемой литературе и распространяться среди административных чинов и населения вплоть до 1910 года. Цель работы – рассмотреть изменение отношения к корейцам-переселенцам русских в конце XIX века и до 1910 года на Дальнем Востоке Российской Империи. В задачи настоящей работы не входит анализ представлений о корейцах-переселенцах в русском обществе того времени, поскольку исследования ограничены объемом данной статьи. The perception of the Koreans by Russians in the late XIX – early XX century was based on reports of representatives of the military administration of the Ussuriisk region, reports and essays of travelers and scholars, articles in newspapers, eyewitness accounts. The first information about the Koreans was loyalty. N. Przhevalsky based many of such notes on essays. Over time, the understanding of the Koreans began to change to a negative side. The growing hostility towards Koreans began with the appointment of the military governor P.F. Unterberger, who had nationalist views. This attitude was reflected in public literature and was disseminated among administrative staffs and common people until 1910. The purpose of the work is to consider the changing attitude of Russians to Koreans-migrants in the late XIX century and until 1910 in the Far East of the Russian Empire. The tasks of this paper do not include an analysis of the perceptions about Koreans-migrants in the Russian society of that time, so the research is limited by the scope of this article.

Can CSR Alone Sufficiently Alleviate Investment Inefficiency? An Evidence from China, Korea and Japan

Abrar Maira,Kook-Hyun Chang 한국재무학회 2019 財務硏究 Vol.32 No.3

This study investigates whether corporate social responsibility (CSR) alone sufficiently alleviates the problem of inefficient investment or not? This study considers firms registered on the Shanghai Exchange (China), Korean Exchange (South Korea)and Tokyo Exchange (Japan) for the period 2012 to 2016. Key findings are as follows. First, higher levels of CSR engagement have a positive role in alleviating investment inefficiency. Second, national culture plays a moderating role in the relationship between CSR and investment inefficiency for the entire sample. However, for China, national culture did not play any moderating role (weak culture). Korean national culture displays a partially moderating role (partially strong culture). Japan emerged as the strongest national culture because of the strong moderating role of its national culture. Third, information asymmetry has a mediating role between CSR and inefficient investment by solving the problem of underinvestment. Fourth, agency cost plays a mediating role between CSR engagement and inefficient investment by overcoming the problem of overinvestment. It concludes that CSR engagement alone is not sufficient for alleviating inefficient investment. However, the relationship between CSR and inefficient investment is explained more effectively, through the moderating effect of national culture and the mediating effect of information asymmetry and agency cost.

Mini-Slot Based Access Barring Scheme for IoT Networks

Alvi Maira,Toor Waqas Tariq,Rehman Yawar,Javed Imran,Idrees Muhammad,Imtiaz Junaid,Assam Muhammad,Aziz Amira Syed A.,Attia El-Awadi 한국컴퓨터산업협회 2023 Human-centric Computing and Information Sciences Vol.13 No.-

These rising adoption of Internet of Things (IoT) devices in various applications have placed significant demands on cellular networks, including LTE/5G because they have to provide not only the regular services for human traffic but also meet the traffic requirements for these IoT devices. Multiple devices desire to use network resources at the same time during peak hours and overload conditions, generating collisions and reducing the network's effective throughput. The access class barring (ACB) method was offered as the best potential approach in the LTE communication network to overcome this problem. Our suggested approach improves the ACB scheme, by splitting the time of a random-access sensing frame into a number of mini-slots and computing the value of the effective ACB factor within each mini-slot. Simulation results obtained show significant improvement in the reduction of the number of collisions, thereby increasing the throughput of the network. The proposed algorithm shows better performance from conventional ACB algorithms in terms of total service time (TST) which is the time required by all IoT devices in the system to get success. In particular, our proposed algorithm shows 75% improvement in TST, and the simulation results support our claim.

Can CSR Alone Sufficiently Alleviate Investment Inefficiency? An evidence from China, Korea and Japan.

Abrar Maira,Kook-Hyun Chang 한국재무학회 2019 한국재무학회 학술대회 Vol.2019 No.05

This study investigates whether corporate social responsibility (CSR) alone is enough to alleviate the problem of inefficient investment, or certain moderating or mediating factor loadings are required. The moderation effect of national culture and the mediation effect of information asymmetry and agency cost are analyzed. This study considered firms registered on the Shanghai Exchange (China), Korean Exchange (South Korea), and Tokyo Exchange (Japan) for the period 2012 to 2016. The findings of the study are as follows. First, higher levels of CSR engagement have a positive role in alleviating investment inefficiency. Second, national culture plays a moderating and influencing role in the relationship between CSR and investment inefficiency for the entire sample. However, in the context of China, national culture did not play any role in moderating the relationship between CSR and investment inefficiency (weak culture). Korean national culture displays a partially moderating role, in removing inefficient investment through CSR (partially strong culture). Japan emerged as having the strongest national culture because of the strong moderating role its national culture plays in the relationship between CSR and investment inefficiency. Third, information asymmetry has a mediating role between CSR and inefficient investment in terms of solving the problem of underinvestment for the entire sample as well as the samples for each country. Fourth, agency cost plays a mediating role between CSR engagement and inefficient investment by overcoming the problem of overinvestment for the entire sample as well as the samples for each country. It is concluded that CSR engagement alone is not sufficient for alleviating inefficient investment. However, the relationship between CSR and inefficient investment can be explained through the moderating effect of national culture and the mediating effect of information asymmetry and agency cost.

외국의 최신 문헌 초록 : 뇨붕증 진단을 위한 간단한 검사

A. Jadresic,Maira 대한내과학회 1962 대한내과학회지 Vol.5 No.7