003 Tehui Atahu

The Story of Tehui Atahu This is a transcript and translation of 12 pages given to me by Edwin Huilani on Sikaiana, in 1981-2. The story is about the founder hero of Sikaiana, Tehui Atahu. The back page of the manuscript is dated August 1972. Although I do not know the source, the story follows closely the stories that I heard on Sikaiana, although there are several different versions with minor differences. The original and translation should be of interest to Sikaiana people and might be an aid in language preservation

Final Project Reprot: Electrospinners

This report provides a comprehensive overview of the development of the Electrospinning Machine Year 2 project. In the year 1 iteration of the project, the previous team successfully produced nanofibers, but in an unaligned, random orientation due to the usage of a flat plate collector. Building upon the foundation laid by the previous team, this year\u27s effort focuses on enhancing the functionality of the existing electrospinning machine by improving the alignment of nanofibers and enabling the simultaneous projection of multiple polymer solutions. Key objectives include the design of a cylindrical collector subsystem, the development of a high-precision motor system, the integration of a dual-barrel syringe for modular solution ejection, and the establishment of metrics for evaluating fiber alignment. At the core of the design is an in-house manufactured cylindrical collector made of aluminum, chosen for its conductivity, durability, and cost-effectiveness. Driven by a high-speed servo motor capable of reaching speeds between 2000-6000 rpm, this subsystem is designed to optimize nanofiber alignment while adhering to OSHA mechanical and electrical safety standards. The motor system includes a DC power supply, a PWM motor controller with adjustable speed settings, and a modular stand mechanism designed for future scalability and improved alignment precision. The syringe pump subsystem features a dual-barrel syringe mechanism, allowing for the simultaneous ejection of multiple polymer solutions at controlled flow rates. This modular solution avoids significant modifications to the existing syringe pump system, reducing cost and complexity while meeting the objective of projecting multiple solutions. Needle tips and flow rates are optimized to achieve fiber diameters of approximately 200 nm, enhancing the system\u27s adaptability to various electrospinning applications. Fiber alignment is quantified using MATLAB and ImageJ to evaluate and compare nanofiber orientation against the fiber alignment of the previous team’s sample. The goal is to achieve more aligned nanofibers by producing samples with a lower interquartile range for the angle distribution. A lower interquartile range (IQR) will show that the fibers are oriented within a smaller range of angles whereas a larger IQR will show that fibers are oriented across a wide range of angles. The color maps and histograms provided by ImageJ and the IQR provided by MATLAB will provide an analysis of the fiber alignment. Additionally, ImageJ will provide a measurement of the fiber diameters to ensure that fibers are produced with diameters of 200 nm ±20%. Testing confirmed that the completed prototype met all project objectives and working criteria. The system is capable of producing aligned nanofibers with diameters of 200 nm ±20%, which has been successfully proven using image processing to quantify fiber alignment

Solar Turbines: Mars SoLoNOx Fuel Injector Serviceability

The ability to remove a fuel injector from a Solar Turbines Mars 100 Engine has been a strenuous and demanding task for Field Service Representatives (FSRs). Not only is it physically demanding for an FSR, taking an average of 2-3 hours to remove a single fuel Injector, with 14 located radially around the combustor section of the engine, it is also a costly one. Due to the large amount of time consumed when removing, the company using the turbine can lose a sizable amount of money. FSRs are requested to complete maintenance cycles every 5,000 hours the engine is run or annually, where they must remove the fuel injectors in order to either borescope inside the engine or examine the state of the injectors themselves

The Large Enriched Germanium Experiment for Neutrinoless Double Beta Decay (LEGEND)

The observation of neutrinoless double-beta decay (0${\nu}{\beta}{\beta}$) would show that lepton number is violated, reveal that neutrinos are Majorana particles, and provide information on neutrino mass. A discovery-capable experiment covering the inverted ordering region, with effective Majorana neutrino masses of 15 - 50 meV, will require a tonne-scale experiment with excellent energy resolution and extremely low backgrounds, at the level of $\sim$0.1 count /(FWHM$\cdot$t$\cdot$yr) in the region of the signal. The current generation $^{76}$Ge experiments GERDA and the MAJORANA DEMONSTRATOR utilizing high purity Germanium detectors with an intrinsic energy resolution of 0.12%, have achieved the lowest backgrounds by over an order of magnitude in the 0${\nu}{\beta}{\beta}$ signal region of all 0${\nu}{\beta}{\beta}$ experiments. Building on this success, the LEGEND collaboration has been formed to pursue a tonne-scale $^{76}$Ge experiment. The collaboration aims to develop a phased 0${\nu}{\beta}{\beta}$ experimental program with discovery potential at a half-life approaching or at $10^{28}$ years, using existing resources as appropriate to expedite physics results.Comment: Proceedings of the MEDEX'17 meeting (Prague, May 29 - June 2, 2017

Clinicopathological Determinants of Recurrence Risk and Survival in Mucinous Ovarian Carcinoma

Mucinous ovarian carcinoma (MOC) is a unique form of ovarian cancer. MOC typically presents at early stage but demonstrates intrinsic chemoresistance; treatment of advanced-stage and relapsed disease is therefore challenging. We harness a large retrospective MOC cohort to identify factors associated with recurrence risk and survival. A total of 151 MOC patients were included. The 5 year disease-specific survival (DSS) was 84.5%. Risk of subsequent recurrence after a disease-free period of 2 and 5 years was low (8.3% and 5.6% over the next 10 years). The majority of cases were FIGO stage I (35.6% IA, 43.0% IC). Multivariable analysis identified stage and pathological grade as independently associated with DSS (p p < 0.001). Grade 1 stage I patients represented the majority of cases (53.0%) and demonstrated exceptional survival (10 year DSS 95.3%); survival was comparable between grade I stage IA and stage IC patients, and between grade I stage IC patients who did and did not receive adjuvant chemotherapy. At 5 years following diagnosis, the proportion of grade 1, 2 and 3 patients remaining disease free was 89.5%, 74.9% and 41.7%; the corresponding proportions for FIGO stage I, II and III/IV patients were 91.1%, 76.7% and 19.8%. Median post-relapse survival was 5.0 months. Most MOC patients present with low-grade early-stage disease and are at low risk of recurrence. New treatment options are urgently needed to improve survival following relapse, which is associated with extremely poor prognosis

EFFECT OF SUGARCANE YELLOW LEAF VIRUS ON SUGARCANE YIELD AND JUICE QUALITY

Abstract In 1996, sugarcane plants infected with sugarcane yellow leaf virus (SCYLV), reported to cause yellow leaf syndrome (YLS), were discovered in Louisiana. Field experiments were established to assess the potential impact of the disease on the Louisiana sugarcane industry. In the first experiment, yield and juice quality of SCYLV-infected and non-infected plants of cultivar LCP82-89 were compared. Sugar yields per unit area were reduced 11 % and 14% in the first ratoon and second ratoon crops respectively. Stalk number and tonnage were reduced in SCYLV-infected plants. Cane quality components, % brix, % sucrose, % fibre and % purity, did not differ between infected and non-infected plants. However, % brix, % sucrose, and % purity were higher in juice from virus-infected green leaf tissue compared with healthy leaf tissue. In a second experiment, juice from leaves and stalks of infected and non-infected plants collected from plant cane, first ratoon, and second ratoon crops of cultivars LCP82-89 and LHo83-153 was analysed. Cane quality components did not differ in either cultivar. In juice from SCYLV-infected leaves, % sucrose was higher in LCP82-89 and % purity and starch concentrations were higher in both cultivars, while differences in total polysaccharides and oligosaccharides were not detected. Dextran content was inconsistent. The uppermost green leaves are normally removed from the stalk during mechanical harvesting; however, they may not be removed if the cane is lodged. Leaves delivered to the mill containing elevated levels of starch might reduce processing efficiency

Lived experience in mental health research in Ghana and Indonesia: What have we learned?

There are increasing calls for the involvement of people with lived experience in mental health research. However, to date there are few examples of peer research conducted by people with lived experience of mental health conditions from the Global South. This paper explores the experiences of peer researchers involved in mental health research in Ghana and Indonesia. Peer researchers with lived experience of mental health conditions were employed as part of the research team to carry out qualitative and participatory arts-based research. Following this, peer researchers completed feedback forms and written reflections as well as taking part in unstructured discussions on their experience. Together with the academic research team, themes were developed from this feedback to identify the benefits, challenges and lessons learned from this process. Peer researchers benefited from developing skills and confidence, sharing lived experience, opportunities to engage with stakeholders and a supportive working environment. However, they identified several challenges including balancing care for self and others, precarious working conditions, enduring power imbalances and limited training and preparation. Key lessons included the need to consider safety and support needs, preparation for working with participants with lived experience, meeting resource needs and the importance of involving peer researchers across the research cycle. Based on these experiences, we identify several recommendations for peer research, particularly in Global South settings. These include involving people with lived experience in research design and costing, careful preparation and training, creating safe spaces and enabling access to mental health support, providing fair and comprehensive remuneration, creating opportunities for career development and democratizing opportunities for participation