Proof-of-concept engineering workflow demonstrator

When Microsoft needed a proof-of-concept implementation of bespoke engineering workflow software for their customer, BAE Systems, it called on the software engineering skills and experience of the Microsoft Institute for High Performance Computing. BAE Systems was looking into converting their in-house SOLAR software suite to run on the MS Compute Cluster Server product with 64-bit MPI support in conjunction with an extended Windows Workflow environment for use by their engineer

The influence of Problem Reality-Based Web Course Learning (WCL) on students' Higher-Order Thinking Skills (HOTS) on human reproductive system material

The purpose of this study was to describe 1) the application of Problem Reality Based Web Course Learning in the Reproductive System Material for Class XI MIPA SMA 1 Bae Kudus. 2) the students' High Order Thinking Skills on Reproductive System Material for Class XI MIPA SMA  1 Bae Kudus. 3) the effect of Web Course Learning Based on Problem Reality for Higher Order Thinking Skills of students XI MIPA on Reproductive System material SMA 1 Bae Kudus. This is experimental research with a quantitative approach. The sample of this study used 70 students from SMA 1 Bae Kudus. Sampling by using the Cluster Random Sampling technique. The data analysis by using the Independent sample t-test. Hypothesis test results show that the value of sig-2 Tailed 0.000 <0.05, the conclusion is that H 1 is  accepted, meaning that there is an effect  of implementation Web Course Learning Based on Problem Reality for Higher Order Thinking Skills of students XI MIPA on Reproductive System material.  This research is expected to be able to provide new results that online learning is able to increase Higher Order Thinking Skills of student

BAE: 001.1 through BAE: 004.1 Proposed Amendments to Constitution

Amendments re: executive committee quorum, ex-officio non-voting members, majority vs plurality elections and voting rights

"A Program of Opera Scenes," November 8, 9, 1985

This is the concert program of the "A Program of Opera Scenes" performance on Friday, November 8, and Saturday, November 9, 1985, at the Concert Hall, 855 Commonwealth Avenue. Scenes performed were Act II, scene 2 from The Merry Wives of Windsor by Otto Nicolai, Act II, scenes 1 and 2 from Hansel and Gretel by Engelbert Humperdinck, Act I Duet from L'Elisir D'Amore by Gaetano Donizetti, Act II, scene 2 from The Rake's Progress by Igor Stravinsky, with libretto by W. H. Auden and Chester Kallman, Act II Quintet from Carmen by Georges Bizet, with libretto by H. Meilhac and L. Halevy, Act III from La Bohème by Giacomo Puccini, with libretto by G. Giacosa and L. Illica, and Act I finale from Così fan tutte by Wolfgang Amadeus Mozart, with libretto by Lorenzo Da Ponte. Digitization for Boston University Concert Programs was supported by the Boston University Humanities Library Endowed Fund

Thermal Degradation and Corrosion of Amines for CO2 Capture

This report examines the thermal degradation and corrosion of various amine solvents as they apply to amine scrubbing for CO2 capture. Amines were placed in stainless steel cylinders and heated in convective ovens to simulate the stripping conditions inside a scrubbing unit. Samples were measured for remaining amine concentration, to test for degradation, and metals concentration, to estimate corrosion of the cylinder. The maximum stripping temperature of a particular compound, a measure of resistance to thermal degradation, strongly correlated with amine chain length. The linear amines studied had the following max temperatures: EDA (116 °C), PDA (124 °C), DAB (126 °C), BAE (130 °C), HMDA (140 °C), MEA (116 °C), MPA (129 °C), and DGA® (134 °C). The SHA/PZ blends had the following weighted max temperatures: AMP (143 °C), AMPD (135 °C), TRIS (130 °C), tBuAE (150 °C), PM (97 °C), and PE (129 °C). The linear amines follow initial first-order degradation curves, consistent with literature mechanisms. EDA, PDA, BAE, and AMP degraded significantly more slowly under acid conditions, suggesting that the degradation mechanisms do not incorporate CO2. Acid loaded DAB degraded at a similar rate to CO2-loaded conditions. MEA corroded 15 times faster than MPA; MAE corroded 3 times faster than EAE; DMAE-PZ corroded qualitatively faster than DMAP-PZ. These three pairs support the hypothesis that two-carbon chains corrode more than three-carbon chains. EDA corroded 40 to 80 times more than PDA according to older studies, seen in Figure 38, but more recent tests show similar corrosion rates where EDA is only 1.2 times faster (Figures 32 and 33). Corrosion and amine concentration correlate strongly; corrosion does not correlate strongly with temperature or CO2-loading. Corrosion and formate generation appear to correlate, supporting corrosion mechanisms proposed in literature.Chemical Engineerin

Production of Bacterial Cellulose Using Low-cost Media

Bacterial cellulose (BC) is a polymer of glucose monomers, which has unique properties including high crystallinity and high strength. It has the potential to be used in biomedical applications such as making artificial blood vessels, wound dressings, and in the paper making industry. Unlike cellulose from plant sources, it is not contaminated with non-cellulose compounds, making it a candidate for medical use. The aim of this thesis was to optimize BC production using the Gram negative bacterium Gluconacetobacter xylinus DSM 46604, including identifying cheaper ingredients for the culture media. Initial trials were done on solid media and in shake flasks. Trials were then scaled and done in 3-L and 5-L conventional bioreactors. Three different processing strategies were used in the bioreactors: batch, fed-batch and continuous. The morphology of the BC depended on the growth conditions. Thin sheets were formed in stationary cultures and pellicles were formed in agitated cultures. The scanning electron microscope micrographs showed that BC produced under static culture tends to be more densely packed than when produced in agitated shake flasks. Exploratory trials on agar slants and in agitated shake flasks using glucose, sucrose, and lactose showed that G. xylinus DSM 46604 grew well on glucose and produced BC. However, there was minimal growth on the other two carbohydrates. Further trials with initial glucose concentrations between 40 and 100 g/L were done in shake flasks. Glucose concentration did not affect the BC morphology. The maximum BC concentration of 1.13 g/L was produced using 50 g/L glucose. The BC concentration using 100 g/L glucose was only 0.96 g/L. Shake flask studies with 2 to 9 g/L yeast extract (YE) as a nitrogen source in the media showed the maximum BC concentration of 5.2 g/L was obtained using 5 g/L YE with 50 g/L of glucose. Increasing the YE to 7 or 9 g/L produced only 4.82 and 4.06 g BC/L respectively. The effect of two cheaper nitrogen sources, fish hydrolysate and fish powder prepared from waste fish, were investigated. The highest BC concentration of 0.24 g/L was obtained using 20 g/L fish hydrolysate rather than 5 g/L YE. The BC yield of 0.04 g BC /g carbon substrate used were obtained using 5 g/L YE, 20 g/L fish hydrolysate, or 15 or 20 g/L fish powder. The effectiveness of four combinations of banana peel (as a cheaper carbon source) and glucose were investigated in shake flasks trials. The highest BC concentration of 0.43 g/L was obtained using 10 g/L banana peel extract with 40 g/L glucose. This was similar to the BC concentration produced with 50 g/L glucose (control). Trials using the same combination of banana peel and glucose in a 3-L bioreactor produced 1 g/L BC compared with 2.2 g/L for 50 g/L glucose (control). Shake flask fermentations using 10 to 50 g/L glycerol as the carbon source showed that the highest BC concentration of 1.43 g/L was produced with an initial glycerol of 20 g/L. Trials done in a 3-L bioreactor produced 2.87 g/L of BC, representing a yield of 0.15 g/g carbon substrate used. The effect of aeration and agitation on BC production was studied in 3- and 5-L bioreactors. The optimal agitation was 200 rpm at constant air flow rate of 0.3 volume air per volume culture broth per minute (vvm). This produced 4.0 g/L BC and a yield of 0.06 g/g glucose. The optimal aeration rate at 150 rpm was 1.0 vvm and produced 4.4 g/L BC. Various fermentation strategies were then investigated. The control was batch fermentation on 50 g/L glucose in a 3- or 5-L fermenter. All runs were done at 30OC, 200 rpm and 1 vvm aeration. The BC yield when G. xylinus DSM 46604 was grown on 50 g/L glucose using a fill-and-draw fed-batch strategy was 0.05 g/g glucose or glycerol used, which was similar to the control. The BC yield increased to 0.11 g/g when using a pulse-feed fed-batch strategy but the BC yield in continuous fed-batch was only 0.03 g/g. It increased under continuous fermentation conditions and the highest yield (0.13 g/g) was achieved at a dilution rate of 0.1 h⁻¹. If dilution rate was increased further, yields began to decrease. Trials were done by replacing 50 g/L glucose with 20 g/L glycerol. Again, BC yields were higher under continuous conditions than batch fermentation. The BC yield on 20 g/L using a fill-and-draw fed-batch strategy was 0.2 g/g BC compared with 0.15 g/g for the control. This increased to 0.39 g/g for a pulse-feed fed-batch strategy. The BC yield for continuous fed-batch at a dilution rate of 0.1 h⁻¹ was 0.3 g/g. The highest BC yield under continuous conditions was 0.33 g/g when dilution rate was 0.1 h⁻¹. These studies showed that cheaper ingredients such as fish powder or hydrolysate and banana peel extract could partially replace conventional nitrogen and carbon sources such as YE and glucose without affecting BC yield. The BC production was enhanced using fed-batch and continuous processing strategies. Higher BC yields than reported by much of the literature could be obtaining ujsing a combination of low-cost media ingredients and the best reactor conditions

PENERAPAN MODEL PEMBELAJARAN PAIKEM KELAS V DI SEKOLAH DASAR 1 BAE KECAMATAN BAE KUDUS

Abstrak Suprapti. S811402049. Penerapan Model Pembelajaran PAIKEM Kelas V SD 1 Bae Kecamatan Bae Kabupaten Kudus. Pembimbing I: Prof. Dr. Muhammad Akhyar, M. Pd., Pembimbing II: Dr. Djono, M.Pd. Tesis. Program Pascasarjana, Universitas Sebelas Maret Surakarta. Tujuan penelitian ini adalah untuk menemukan (1) kondisi Awal pembelajaran kelas V di SD 1 Bae Kudus; (2) pola perencanaan penerapan model pembelajaran PAIKEM kelas V di SD 1 Bae Kudus; (3) pola pelaksanaan penerapan model pembelajaran PAIKEM kelas V di SD 1 Bae Kudus; (4) kendala penerapan model pembelajaran PAIKEM kelas V di SD 1 Bae Kudus; (5) cara mengatasi kendala pada penerapan model pembelajaran PAIKEM kelas V di SD 1 Bae Kudus; (6) hasil penerapan model pembelajaran PAIKEM kelas V di SD 1 Bae Kudus. Penelitian ini merupakan penelitian kualitatif. Metode pengumpulan data menggunakan wawancara mendalam, observasi partisipasi, dan dokumentasi. Analisis data menggunakan model analisis interaktif. Hasil penelitian menunjukkan bahwa (1) kondisi Awal pembelajaran kelas V di SD 1 Bae Kudus adalah metode pembelajaran masih berpusat pada guru; (2) pola perencanaan penerapan model pembelajaran PAIKEM kelas V SD 1 Bae Kecamatan Bae Kabupaten Kudus adalah dengan menyiapkan perangkat pembelajaran seperti Silabus, Rencana Pelaksanaan Pembelajaran, Kriteria Ketuntasan Minimal Mata Pelajaran, merencanakan evaluasi, remidi dan pengayaan; (3) pola pelaksanaan penerapan model PAIKEM kelas V SD 1 Bae Kecamatan Bae Kabupaten Kudus sudah sesuai dengan Silabus, Rencana Pelaksanaan Pembelajaran, Kriteria Ketuntasan Minimal Mata Pelajaran, merencanakan evaluasi, remidi dan pengayaan; (4) kendala-kendala penerapan model pembelajaran PAIKEM di SD 1 Bae Kecamatan Bae Kabupaten Kudus adalah pada sarana prasarana, keterbatasan meja pada laboratorium multimedia di sekolah; (5) cara mengatasi kendala dan hambatan dalam pembelajaran PAIKEM kelas V SD 1 Bae Kecamatan Bae Kabupaten Kudus adalah bahwa guru dan kepala sekolah selalu memberikan motivasi dan peringatan kepada siswa supaya proses pembelajaran dapat terkendali. (6) hasil penerapan model pembelajaran PAIKEM adalah siswa menjadi aktif, kritis dan kreatif. Kelas menjadi produktif, menyenangkan dan tidak membosankan. Kata Kunci: Pembelajaran, PAIKEM, Sekolah Dasar

Resin transfer moulding: Novel fabrics and tow placement techniques in highly loaded carbon fibre composite aircraft spars

A BAE Systems /UK EPSRC funded project Flaviir, is investigating the design and manufacture of low cost carbon fibre composite airframe structures. Novel binder coated unidirectional fibre tapes and tows were developed to enable the design of optimised primary structures. The RTM technique was applied to mould net shape sections of spar components. Various designs of wing attachment lugs were manufactured with a range of reinforcement materials, including non crimp fabric, novel binder coated tapes and conventional unidirectional prepreg. Alongside these, a novel technique termed optimised tow lay up (OTL) was used to reduce the weight. Binder coated carbon fibre tow is placed around the structure in the principal stress directions to increase both bearing strength and overall component stiffness. The novel materials, manufacturing technique and initial element test results are presented