34,709 research outputs found
AUTOMATED CALCULATION OF MARK-TO-MARKET FOR EXOTICS BOOKS BY GRID COMPUTING TECHNOLOGY
No full textMaster'sMASTER OF SCIENCE IN COMPUTATIONAL ENGINEERINGDissertation Supervisors: 1. Prof. Khoo Boo Cheong, Department of Mechanical Engineering, NUS. 2. Mr. Sun Guang Kun, Quantitative Developer, Standard Chartered Bank
PI-run-scripts_SES2016.tgz
No full textRun scripts for CESM1 simulations in which only the ocean is active and the atmosphere, sea ice, and land runoff are specified from previous coupled simulations.
Reference: S. Sun, I. Eisenman, and A. Stewart (2016). The influence of Southern Ocean surface buoyancy forcing on glacial-interglacial changes in the global deep ocean stratification. Geophys Res Lett 43, 8124-8132.</p
Synthesis and application of some novel functional polymers via controlled radical polymerization and click chemistry
No full textThe objective of this thesis was to prepare thermoresponsive PEG-based
homopolymers and copolymers by combination of cobalt-mediated catalytic
chain-transfer polymerization (CCTP) and thiol-ene “click” chemistry and
prepare well-defined glycopolymers via “living” polymerization and “click”
chemistry.
The effect of different catalysts for the nucleophilic mediated thiol-ene
reaction was investigated using model compounds, both monomers and
oligomers obtained by CCTP. Different catalysts, including pentylamine and
hexylamine (primary amines), triethylamine (tertiary amine), and two different
phosphines, dimethylphenylphosphine (DMPP) and tris(2-carboxyethyl)
phosphine (TCEP), were investigated in the presence of different thiols. The
optimum reaction conditions for nucleophile mediated thiol-ene click reactions
were investigated.
Thermoresponsive PEG-based homopolymers and copolymers of
OEGMEMA obtained by CCT were modified using thiol-ene click chemistry
with a variety of different functional thiol compounds to yield functional
thermoresponsive polymers in high yield. The effect of different solvent systems
for based catalyzed thiol-ene reaction was investigated in the presence of
different functional thiols.
The ATRP polymerization of TMS-PgMA and TIPS-PgMA and ROP
polymerization of aliphatic polyester were investigated. A maleimide functional
initiator was used in order to achieve post conjugation of nanoparticles for drug
delivery. Moreover, the disulfide based bifunctional initiator was introduced into
the midpoint of the polymer chain, which could break down to afford the
corresponding polymer chain with thiol end group under the reducing condition.
The thiol-terminated polymer was also post-functionalized via thiol-ene click
chemistry. In addition, the aliphatic polycarbonate is a biocompatible and
biodegradable polymer, which is widely used in medical and pharmaceutical
applications. The subsequent introduction of sugar moiety to the reactive
polymer chain via CuAAC click reaction and then the interactions between
glycopolymers and lectins were investigated by Surface Plasmon Resonance
(SPR) and Quartz Crystal Microbalance with Dissipation (QCM-D).
The controlled SET-LRP polymerization of TMS-PgMA and SET-RAFT
polymerization PgMA with the intact alkyne at ambient temperature were
investigated. A maleimide functional initiator and CPDB, as the chain transfer
agent have been employed. The introduction of maleimide moiety was to allow
for post polymerization conjugation to peptides via reaction with cysteines. The
subsequent introduction of sugar azides to click with the reactive polymer
containing alkyne group and the glycopolymers through CuAAC was also
investigated. The glycopolymer has been successfully prepared combining the
SET-LRP/SET-RAFT and CuAAc click chemistry at ambient temperature
Sun Valley, ski run
No full textSkiiers coming down a run at Sun Valley, Idaho. Chair lift in background
Vowel Phenomena of Guang Languages
No full textThe Guang language family of Ghana has received a fair amount of study over the past
several decades. Snider’s (1990b) work is the most extensive study on Guang phonology. The
aim of this thesis will be to cite new information and build upon Snider’s work to gain a better
understanding of Guang phonology, specifically in relation to vowel systems and phenomena.
Some of the most prominent phonological processes in Guang involving vowels include ATR
and rounding harmony, and hiatus resolution. This study examines the consistencies and
differences among Guang languages with regard to vowel phenomena. While some interesting
variation does exist across the Guang language family, examination of available resources and
data, along with some acoustic analysis, show that Guang vowel phenomena are generally
consistent. The most important aspect that is consistent across Guang languages, despite
differing analyses and descriptions, is that all exhibit nine-vowel systems
Henri Temianka Correspondence; (ling-guang)
No full textThis collection contains material pertaining to the life, career, and activities of Henri Temianka, violin virtuoso, conductor, music teacher, and author. Materials include correspondence, concert programs and flyers, music scores, photographs, and books.https://digitalcommons.chapman.edu/temianka_correspondence/4089/thumbnail.jp
Community Characteristics of Soil Ciliates at Baiyun Mountain, Guangzhou, China
No full textJing Li, Ming-Guang Li, Jian Yang, Ying Ai, and Run-Lin Xu (2010) Community characteristics of soil ciliates at Baiyun Mountain, Guangzhou, China. Zoological Studies 49(6): 713-723. We investigated the relationships between the soil ciliate community and environmental factors at 7 different habitats at Baiyun Mountain, Guangzhou, southern China. The abundance, dominance, biodiversity, colpodid/polyhymenophoran (C/P) ratio, and community similarity of soil ciliates were investigated using qualitative and quantitative analyses. We found a total of 114 species of ciliates belonging to 9 classes, 18 orders, and 47 genera. The 1st dominant group (i.e., the group richest in species) was the Spirotrichea, followed by the Colpodea, with dominance values of 38.6% and 21.93%, respectively. The highest abundance of ciliates was found in winter at site 5 (with representative vegetation of Tetradium ruticarpum Hartley), reaching 3.87 x 10(4) individuals (ind.)/g, and the lowest in spring at site 2 (with representative vegetation of Schima superba Gardn. et Champ.) at 9.2 x 10(2) ind./g. Margalef's richness index ranged 2.07-5.46. Statistical analyses demonstrated that ciliate abundances were positively correlated with soil moisture, organic matter, ammonia-nitrogen, total nitrogen, and total phosphorus, but negatively correlated with total potassium. Soil pH, nitrate-nitrogen, and sulfate showed insignificant effects. Analyses of C/P ratios and diversity indices implied that habitat conditions of sites 2 and 7 were relatively unfavorable for soil protozoa. http://zoolstud.sinica.edu.tw/Journals/49.6/713.pd
MAGEC_2024
No full textMAGEC (Magma And Gas Equilibrium Calculator)
Author: Chenguang Sun
Copyright, 2025
This Matlab program calculates the equilibrium distribution of C-H-O-S volatiles (H2, H2O, CO, CO2, CH4, H2S, SO2, S2, COS, O2) in gas-melt coupled systems.
Updates on April 27, 2025:
1. Added additional options for CO2 and H2O solubility models
2. Corrected CO solubility models
If you use this program for your publications, please cite the following references:
1. Sun, C. and Yao, L., 2024. Redox equilibria of iron in low-to high-silica melts: A simple model and its applications to CHOS degassing. Earth and Planetary Science Letters, 638, p.118742. [Note: This is the reference for MAGEC_2024 with new Fe- and S-redox models and flexible setting options.]
2. Sun, C. and Lee, C.T.A., 2022. Redox evolution of crystallizing magmas with CHOS volatiles and its implications for atmospheric oxygenation. Geochimica et Cosmochimica Acta, 338, pp.302-321. [Note: This is the reference for the first version of MAGEC.]
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How to run the program:
1. Input T/P/logfO2 (or Fe3+/FeT) and compositions in the input file (.xlsx).
Make sure you use different names for the input and output files.
The batch data could be polybaric/isobaric/adiabatic degassing.
2. Modify the "settings" in the input file.
3. Open [Run_MAGEC_2024_v2.m] in Matlab
4. Go to [Editor] Tab in Matlab and click [Run] button.
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Canyon run and lift, Sun Valley, Idaho.
No full textPhoto shows the Canyon run and lift at the Sun Valley ski resort in Blaine County, Idah
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