26,574 research outputs found
Managing schools in Myanmar : an investigation into motivational strategies for teachers and challenges of headteachers in schools
No full textThe present study is an investigation to motivational strategies that are currently applied to motivate teachers in an under-researched area, Myanmar. A variety of motivational theories have been applied in motivating teachers and the majority of them were originated in the Western context. This study has explored the effectiveness of Herzberg’s motivational theory called “two-factor theory” in the context of Myanmar. With the distinction of motivators and hygiene factors in Herzberg’s theories was applied to the practical experiences of teachers’ motivational factors.
In addition, many studies have given attention to teachers' perspectives on motivation and how teachers have identified what motivates them in their profession. However, this study has investigated the headteachers’ perspectives on how they initiate and maintain teachers' motivation in Myanmar. The time this research study has focused is the recent time of Myanmar when the country is in political and sociological difficulties which have led this study to investigate further the challenges headteachers face in the Myanmar context.
Data were collected from headteachers from schools in private sectors in Myanmar and the findings from the data suggest a range of motivational strategies that can be applied in Myanmar school context and there are variations in applying Herzberg’s motivational theory in Myanmar compared to the Western context
CHO-Bearing Molecules in Comet 67P/Churyumov-Gerasimenko
No full textIn 2004, the Rosetta
spacecraft was sent to comet 67P/Churyumov-Gerasimenko
for the first ever long-term investigation of a comet. After its arrival
in 2014, the spacecraft spent more than 2 years in immediate proximity
to the comet. During these 2 years, the ROSINA Double Focusing Mass
Spectrometer (DFMS) onboard Rosetta discovered a coma with an unexpectedly
complex chemical composition that included many oxygenated molecules.
Determining the exact cometary composition is an essential first step
to understanding of the organic rich chemistry in star forming regions
and protoplanetary disks that are ultimately conserved in cometary
ices. In this study, a joint approach of laboratory calibration and
space data analysis was used to perform a detailed identification
and quantification of CHO compounds in the coma of 67P/Churyumov-Gerasimenko.
The goal was to derive the CHO compound abundances relative to water
for masses up to 100 u. For this study, the May 2015 postequinox period
represents the best bulk abundances of comet 67P/Churyumov-Gerasimenko.
A wide variety of CHO compounds were discovered, and their bulk abundances
were derived. Finally, these results are compared to abundances of
CHO-bearing molecules in other comets, obtained mostly from ground-based
observations and modeling
Erratum: 3D bioprinted in vitro secondary hyperoxaluria model by mimicking intestinal-oxalatemalabsorption-related kidney stone disease (Applied Physics Reviews (2022) 9 (041408) DOI: 10.1063/5.0087345)
No full text© 2023 Author(s).This article was originally published online on 21 November 2022 with an incorrect affiliation identifier for author Dong-Woo Cho. It is correct as it appears above. All online versions of this article were corrected on 23 November 2022. AIP Publishing apologizes for this error.11Nsciescopu
Unimodality of Betti numbers for Hamiltonian circle actions with index-increasing moment Maps
No full textThe unimodality conjecture posed by Tolman in [L. Jeffrey, T. Holm, Y. Karshon, E. Lerman and E. Meinrenken, Moment maps in various geometries, http://www.birs.ca/workshops/2005/05w5072/report05w5072.pdf] states that if (M,ω) is a 2n-dimensional smooth compact symplectic manifold equipped with a Hamiltonian circle action with only isolated fixed points, then the sequence of Betti numbers {b0(M),b2(M),...,b2n(M)} is unimodal, i.e. bi(M) ≤ bi+2(M) for every i < n. Recently, the author and Kim [Y. Cho and M. Kim, Unimodality of the Betti numbers for Hamiltonian circle action with isolated fixed points, Math. Res. Lett. 21(4) (2014) 691-696] proved that the unimodality holds in eight-dimensional case by using equivariant cohomology theory. In this paper, we generalize the idea in [Y. Cho and M. Kim, Unimodality of the Betti numbers for Hamiltonian circle action with isolated fixed points, Math. Res. Lett. 21(4) (2014) 691-696] to an arbitrary dimensional case. We prove the conjecture in arbitrary dimension under the assumption that the moment map H : M → R is index-increasing, which means that ind(p) < ind(q) implies H(p) < H(q) for every pair of critical points p and q of H, where ind(p) is the Morse index of p with respect to H. © World Scientific Publishing Company1111sciescopu
Systems biology for reverse aging
No full textCellular senescence is an irreversible and permanent cell cycle arrest in response to internal and external stresses. Its unresponsiveness to growth factor signals distinguishes it from a potentially reversible state, quiescence. Cellular senescence can inhibit tumor development by blocking proliferation of damaged cells, but as senescent cells become accumulated in a tissue, they can contribute to the promotion of agerelated diseases such as cancer by secreting inflammatory cytokines [1]. © 2021 Cho et al. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
The antihypertensive effects of the Jamaican Cho-Cho (Sechium edule)
No full textThe experiments reported in this study constitute a preliminary investigation into the possible hypotensive effect of the Jamaican Cho-Cho (Sechium edule). Experiments were conducted in a random and blind fashion on two sub species of Sechium edule. Both the pulp and the peel were examined for hypotensive activity. Water-soluble extracts were prepared from these components of the fruit and injected into anaesthetised rats. Various cardiovascular parameters were measured including heart rate, mean arterial pressure (MAP) and several ECG intervals. We report that all extracts tested produced a fall in blood pressure with little change in ECG intervals. Extract B produced the least change in heart rate with a fall in MAP of approximately 23 mmHg. Changes in heart rate with all extracts appeared to be minimal as an ED25 value could only be determined for extract A, and ED10 values could not be evaluated for extracts C and D. The mechanism(s) by which these extracts produce their hypotensive effects could not be determined in these preliminary experiments. However, it appears not to involve direct effects on cardiac tissue. This conclusion is based on the finding that it took a minimum of 10 to 15 seconds for the hypotensive action to manifest post bolus. Future experiments will be aimed at delineating the mechanism(s) involved in decreasing MAP.Peer reviewedfinal article publishe
Nota su Eschilo, Cho. 65
No full textThe author defends the reading ἄκραντος in the sense of “unfinished” in Aesch. Cho. 65
An ‘omics approach towards CHO cell engineering
No full textBiotechnology and Bioengineering, 110, 1255–1271Note : if this item contains full text it may be a preprint, author manuscript, or a Gold OA copy that permits redistribution with a license such as CC BY. The final version is available through the publisher’s platform.Chinese hamster ovarian cells (CHO) cells have been extensively utilized for industrial production of biopharmaceutical products, such as monoclonal antibodies, human growth hormones, cytokines, and blood-products. Recent advances in recombinant DNA technology have resulted in the bioengineering of CHO cells that have robust gene amplification systems and can also be adapted to grow in suspension cultures. In parallel, recent advances in techniques and tools for decoding the CHO cell genome, transcriptome, proteome, and glycome have led to new areas of study for better understanding the metabolic pathways in CHO cells with the long-term goal of developing new biologics. This review paper discusses the recent advances in bioengineering strategies in CHO cell lines and the impact of the knowledge gained by CHO cell genomics, transcriptomics, and glycomics on the future of CHO-cell engineering.National Institute of General Medical Scienceshttps://login.libproxy.rpi.edu/login?url=https://doi.org/10.1002/bit.2484
Intracellular trehalose via transporter TRET1 as a method to cryoprotect CHO-K1 cells
No full textTrehalose is a promising natural cryoprotectant, but its cryoprotective effect is limited due to difficulties in transmembrane transport. Thus, expressing the trehalose transporter TRET1 on various mammalian cells may yield more trehalose applications. In this study, we ran comparative cryopreservation experiments between the TRET1-expressing CHO-K1 cells (CHO-TRET1) and the CHO-K1 cells transfected with an empty vector (CHO-vector). The experiments involve freezing under various trehalose concentrations in an extracellular medium. The freeze-thawing viabilities of CHO-TRET1 cells are higher than those of CHO-vector cells for most freezing conditions. This result differs from control experiments with a transmembrane type cryoprotectant, dimethyl sulfoxide (Me2SO), which had similar viabilities in each condition for both cell types. We conclude that the trehalose loaded into the cells with TRET1 significantly improves the cryoprotective effect. The higher viabilities occurred when the extracellular trehalose concentration exceeded 200 mM, with 250-500 mM being optimal, and a cooling rate below 30 K/min, with 5-20 K/min being optimal
The Effect of social media influencers on purchase intention in Cosmetics Products (Ma May Thet Cho, 2020)
No full textThis study is aimed to analyze that whether influencers can affect consumers‟ intention to buy the cosmetics products. In this study, the independent variables are the characteristics of social media influencers and the dependent variable is purchase intention of cosmetics products. The required information was acquired by distribution of questionnaire to 413 female consumers through social media in Yangon. Descriptive statistics are used to identify female respondents' backgrounds and other facts. Not only primary data but also secondary data are applied in this research. As descriptive statistics, respondents accept that source credibility, physical attractiveness and product match up have an influence on consumers‟ intention to buy. And physical attractiveness is the lowest influential characteristic on the female consumers‟ intention to purchase. According to the results, this study discovered that source reliability and product match up have major effects on the intention of consumers to buy. The study concluded that product match up has the greatest impact on the female respondents‟ intention to buy. Marketers should carry out product campaign fit with social media influencer to attract consumers for purchasing their products
- …
