XRD and SEM Analysis, and Semiconductor Type Determination of TiO2 for Dye-sensitized Solar Cell

Titanium dioxide (TiO2) is a wide band-gap n-type semiconductor. Anatase TiO2 is the most common structure used in high performance dye-sensitized solar cell (DSSC). Nanoporous TiO2 serves double-duty as an electron acceptor and a scaffold to hold large numbers of dye molecules in DSSC. The porosity of TiO2 is a key feature as it has roughly a thousand times greater a surface area than the equivalent flat area. In this work, TiO2 crystallite size (43.55 nm) has been calculated by using XRD data, and the morphology and the grain-size of TiO2 (average grain size of 0.2 mm ~ 0.3 mm) with different solvents have been also studied by SEM

Secure Spreadsheet Data File Transferring System

Advent technology of security for secretimportant data and information is called theCryptography. Cryptography is an important aspectof communications security and is a basic buildingblock for computer security. However, the term todayrefers to the science and of transforming message tomake them secure. The Advanced EncryptionStandard (AES) is computer security standard. SHAcryptographic hash function is that a hash-valueserves as a message digest of an input string. Thisthesis provides the encryption and decryption systemfor desire cells in excel (spreadsheet file) that can beused to build a secure and hash code for one or morefiles of person identifiable data. The proposed systemis a data transferring system, which send encryptedexcel data file from one place to another on network.This system implements AES-128 and SHA-256algorithm improve the security of excel data file evenon insecure network

Revised ranges of sea grass species in the Myeik Archipelago, Myanmar

In a survey of the Myeik Archipelago, we documented seven seagrass species in the southern region. Three seagrass species (Cymodocea rotundata, Enhalus acoroides, and Halophila ovalis) have previously been reported in the Myeik Archipelago; three species (Halodule pinifolia, Halodule uninervis, Syringodium isoetifolium) are new reports for the archipelago; and one species (Thalassia hemprichii) is a new report for Myanmar

Mentor-mentee program with Medical Students: A successful program with ethical considerations

Background: Mentoring is the relationship of a guide or a teacher with another person/student augmenting his/her carrier growth, knowledge, skills, and experiences implemented by caring, sharing and helping hands. The aim of this paper is to highlight the mentoring, type of mentoring, how important of matching and consideration of ethical issue in mentoring program. Not missing these significant points, mentoring program could be successful in universities including medical faculty. Methods: The SMART principles of specific, measurable, attainable, relevant, and time-bound are essential to structure the matching between mentor and mentee. The rule of etiquette and ethical issues are crucial and beneficial for mentor-mentee relationship. Clinical mentoring programs help to develop students’ clinical skills and can increase interest in under-subscribed specialties. Positive mentoring plays a part in reversing the decline of academic medicine, by sparking interest through early research experiences. Results: There is the short term goal which is to introduce an immediate support network for incoming students and the long term goal is to cultivate a mentoring culture to engage all strata of medical students and every faculty member. Medical students expressed that mentoring program is to provide counselling, develop professionalism, increase students' interest in research, and support them in their personal growth. Conclusion: The goal of mentorship is to provide additional support to student or mentee by steering of the academic needs or social prerequisites to accelerate the personal and professional development of mentee with advice, guide and feed backs from the mentor

Additional file 1: Figure S1. of Dengue virus infection-enhancement activity in neutralizing antibodies of healthy adults before dengue season as determined by using FcγR-expressing cells

Neutralizing antibody (N.A) profile in 34 pair serum samples obtained from 34 individuals who were DENV IgG positive pre-dengue season and demonstrated elevated DENV IgG after the season versus patient group. Neutralizing activity was determined by PRNT50 on BHK cells (A) and on FcγR-expressing BHK cells (B); Positive PRNT samples were defined as having a N.A ≥ 10 or Log2(PRNT50) ≥3.32 to any of the virus test (above dotted line). Non patient 1=pre-dengue season group; Non patient 2 = post-dengue season group; Patient = patient group. The results were represented as means of Log2 (N.A titers) ± SD. (PDF 314 kb

Fcγ受容体発現細胞を用いたデング熱流行期前の健康人血清中におけるデングウイルス感染増強抗体の解析

Background: Antibodies are critical responses to protect the host from dengue virus(DENV) infection. Antibodies target DENV by two pathologic mechanisms: virus neutralization and infection enhancement. In dengue patients, the absence of neutralizing activity in the presence of FcγR implies that infection-enhancing activity hampers the neutralizing activity of antibodies, which could potentially lead to symptomatic presentations and severe clinical outcomes. Methods: A total of 100 pair serum samples from adult healthy volunteers were obtained during the dengue season in Ha Noi in 2015 for evaluation of neutralizing and infection-enhancing activity. Additionally, 20 serum samples from acute secondary DENV infection patients were also used as the patient group in this study. PRNT was performed on BHK cells and FcγR-expressing BHK cell lines for all serum samples. Results: Out of 100 residents, positive neutralizing antibodies (N.A) were found in 44.23 and 76.92% for DENV-1; 38.46 and 75% for DENV-2; 19.23 and 15.38% for DENV-3; and 1.92 and 9.62% for DENV-4 for pre and post-dengue season respectively. The percentage of post-exposure residents having positive responses against single, two, or more than three DENV serotypes were 38.46, 44.23 and 15.38%, respectively. A total of 34 residents were DENV seropositive before the dengue season and these individuals demonstrated further elevation of IgG antibodies after the dengue season. At the end of the season, 18 residents were confirmed to be new asymptomatic DENV infection cases. In both groups, N.A titers determined on BHK cells were higher than that on FcγR-expressing BHK cells. In heterotypic N.A responses, N.A titers to the infecting serotype from the samples obtained from pre-exposure group were significantly higher than those of the patient group. However, fold enhancement to the infecting serotypes from the samples in the pre-exposure group was substantially lower as compared to that of the patient group. Conclusion: Before and after the dengue season, serum samples from healthy volunteers demonstrated high levels of neutralizing antibodies and low or absence of infection-enhancement activity. The results suggest that while infection-enhancement activity hampers neutralizing activity of antibodies, high levels of DENV neutralizing antibodies set a critical threshold in facilitating the prevention of disease progression.長崎大学学位論文 学位記番号:博(医歯薬)甲第1058号 学位授与年月日:平成30年3月20日Author: Minh Huong Phu Ly, Meng Ling MoiEmail author, Thi Bich Hau Vu, Mya Myat Ngwe Tun, Todd Saunders, Cam Nhat Nguyen, Anh Kieu Thi Nguyen, Hung Manh Nguyen, Than Huu Dao, Do Quyen Pham, Thi Thu Thuy Nguyen, Thi Quynh Mai Le, Futoshi Hasebe and Kouichi MoritaCitation: BMC Infectious Diseases, 18, 31; 2018Nagasaki University (長崎大学)課程博