碩士
南臺科技大學
機械工程系
107
The use of biofuels can alleviate the urgency of the oil crisis. The world's largest auto market, the second largest locomotive market, China announced that 2020 will fully ...replace E10 (90% gasoline, 10% ethanol) with gasoline, which can reduce the import of oil and the stock of digested soybeans.
This study applies E10 fuel to traditional single-cylinder four-stroke gasoline engines, optimizing ignition angle, air-fuel ratio, and compression ratio. Exploring engine performance, fuel consumption, emissions and combustion efficiency, this experiment analyzes experimental data in both full load and partial load directions.
At full load, CR9.6E10 is optimized to have similar performance to RON95, CO and HC emissions are less than RON95. And better in combustion speed and combustion stability. In addition, the engine performance can be improved after increasing the compression ratio. CO and HC are also superior to RON95.On partial load CR11.9E10 has better performance and fuel consumption than
Summary
Phosphorus is an important macronutrient. To understand the molecular and cellular responses to phosphorus stress better, transcriptome profiling in combination with biochemical ...investigations was conducted in the model diatom
P
haeodactylum tricornutum
. Out of 10 402 predicted genes, 2491 and 405 genes were significantly upregulated or downregulated respectively. Unsurprisingly, genes associated with phosphate uptake were upregulated, such as the phosphate transporters and alkaline phosphatases. Genes encoding stress‐shock proteins were accordingly upregulated, including genes associated with stress‐responsive proteins, signal transduction and secondary metabolism. Additionally, genes related to protein translation, carbon fixation, glycolysis and the citric acid cycle were also upregulated. Genes associated with gene transcription were downregulated, thereby resulting in the upregulation of translation to compensate for the limited supply of messenger
RNA
. The downregulation of genes related to
β
‐oxidation could contribute to the accumulation of fatty acids. Accordingly, triacylglycerols, which are important for energy storage, were determined to increase by 1.65‐fold. Intracellular membranes, other than chloroplast membranes, tended to be dispersed; this finding was in accordance with the increased transcription of a total of 11 genes encoding putative phospholipases. Taken together, this work revealed the coordination of multiple metabolic pathways and certain key genes in the adaptation of
P
. tricornutum
to phosphorus stress.
碩士
國立中興大學
光電工程研究所
106
The amorphous Indium-gallium-Zinc-Oxide (a-IGZO) thin film transistor (TFTs) has many advantages such as lower leakage current and higher electron mobility. And they can reduce ...device’s size as compared with the conventional amorphous silicon ones, and have a higher aperture ratio to improve resolution, which can make mobile devices thinner and lighter, and the power consumption is also lower. Due to its large energy gap, they are widely used in transparent electronic products. However, in the display applications, it is well known that the unstable characteristics under simultaneous illumination and bias stress are an important issue. Besides, the electrical characteristics under simultaneous illumination and bias stress at high temperatures will be more unstable.
In this study, a novel measurement method is proposed to investigate the reliability of a-IGZO TFTs, which provides the time-varying characteristics of the device at different temperatures with simultaneous illumination and bi
碩士
國立中央大學
資訊工程學系
106
In recent years, a large number of open educational resources have been gradually blend in the learning process of students at all stages. Open educational resources not only can ...help students achieve self-learning but also let teachers to reduce their lesson preparative time and focus solving the learning problems of students. However, with the number of open educational resources increasing in these year, how to help students precisely get the required learning materials has become a problem that open educational resources need to solve. In view of this, the study takes the Education Market as a platform. Apply machine learning methods and text classification techniques to improve the usage amount of various types teaching materials, and then helps students precisely get the required learning materials. The study will compare the various classification models to select the appropriate classification model for our data set. After that ,The study will use LDA feature extraction to find th
碩士
樹德科技大學
建築與室內設計研究所
106
Pingtung County is located in the tropic climate zone and most of the buildings in the region are in individual houses. The temperature does not vary greatly throughout the ...year. The annual temperature is on average hotter than other counties and cities.
The building materials used in these buildings are mostly concrete that will continue to absorb heat during the daytime sun and begin to release heat at night so that the hot air will continue to circulate around the city day and night. This is the so-called heat island phenomenon. In recent years， Pingtung County Government has been promoting Pingtung Green Building Autonomy Policies in hope to improve the local traditional-style buildings to be more livable.
The architectural style of Pingtung County is mostly individual houses.
Enabling builders to import symbiotic fish dishes into buildings.
In this study， fishermen were symbiotically introduced into buildings through the symbiosis of fish and vegetables. In this study， the fish a
Soybean mosaic virus （SMV）, a member of the genus Potyvirus, is a major pathogen of soybean plants in China, and 16 SMV strains have been identified nationwide based on a former detailed SMV ...classification system. As the P3 gene is thought to be involved in viral replication, systemic infection, pathogenicity, and overcoming resistance, knowledge of the P3 gene sequences of SMV and other potyviruses would be useful in efforts to know the genetic relationships among them and control the disease. P3 gene sequences were obtained from representative isolates of the above-mentioned 16 SMV strains and were compared with other SMV strains and 16 Potyvirus species from the National Center for Biotechnology GenBank database. The P3 genes from the 16 SMV isolates are composed of 1041 nucleotides, encoding 347 amino acids, and share 90.7-100% nucleotide （NT） sequence identities and 95.1-100% amino acid （AA） sequence identities. The P3 coding regions of the 16 SMV isolates share high identities （92.4-98.9% NT and 96.0-100% AA） with the reported Korean isolates, followed by the USA isolates （88.5-97.9% NT and 91.4-98.6% AA）, and share low identities （80.5-85.2% NT and 82.1-84.7% AA） with the reported HZ 1 and P isolates from Pinellia ternata. The sequence identities of the P3 genes between SMV and the 16 potyviruses varied from 44.4 to 81.9% in the NT sequences and from 21.4 to 85.3% in the AA sequences, respectively. Among them, SMV was closely related to Watermelon mosaic virus （WMV）, with 76.0-81.9% NT and 77.5-85.3% AA identities. In addition, the SMV isolates and potyvirus species were clustered into six distinct groups. All the SMV strains isolated from soybean were clustered in Group I, and the remaining species were clustered in other groups. A multiple sequence alignment analysis of the C-terminal regions indicated that the P3 genes within a species were highly conserved, whereas those among species were relatively variable.
Diatoms are important primary producers in the marine ecosystem. Currently it is difficult to genetically transform diatoms due to the technical limitations of existing methods. The ...promoter/terminator of the nitrate reductase gene of the model diatom
was cloned and used to drive chloramphenicol acetyltransferase (CAT) reporter gene expression. The construct was transferred by electroporation into
grown in medium lacking silicon. CAT expression was induced in transformed diatoms in the presence of nitrate, enabling growth in selective medium, and was repressed when ammonium was the only nitrogen source. Expression of CAT transcript and protein were demonstrated by RT-PCR and Western blot analysis, respectively. Our study is the first to report a successful genetic transformation of diatom by electroporation in an economical and efficient manner and provides a tightly regulated inducible gene expression system for diatom.
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