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ZIFs與釩氧化物作為鋅電池陰極材料之應用與性能研究
本研究旨在優化鋅離子電池陰極材料的性能,選用沸石咪唑酯骨架材料(ZIFs)與釩氧化物(V6O13)進行複合材料的合成與應用。隨著鋰電池成本的上升,鋅離子電池因其安全性與成本效益逐漸受到重視。ZIFs 具有高比表面積及良好的離子導電性,而V6O13則因多價態和優良導電性而成為潛力材料。通過結合這兩種材料,我們開發了具有多孔結構和優異穩定性的複合陰極材料,再使用 PXRD、SEM 及 EDX 對材料進行結構表徵,並使用此新材料製作鋅離子電池進行電化學性能測試。結果顯示,熱裂解後的 PY-VxOy@ZIF-Zn/Co具有最佳的克容量及穩定性,且在500次循環後保持良好的穩定性。本研究展示了ZIFs和V6O13結合在鋅離子電池中的應用潛力,為低成本、高效能的儲能解決方案提供了新的方向。
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吲哚類化合物抑制神經膠質母細胞瘤及癌幹細胞之潛力
癌症幹細胞被認為是癌症會復發的主因,本研究著眼於探討新合成吲哚類化合物對癌細胞及癌幹細胞的效應與可能的作用機制。透過體外細胞實驗,我們使用不同神經膠質母細胞瘤細胞株,評估化合物對細胞增殖、存活和凋亡的作用。接著以類癌幹細胞球篩檢評估化合物對癌症幹細胞的影響。研究結果顯示,該化合物對神經膠質母細胞瘤及其癌幹細胞皆有一定程度的抑制效果。 同時,透過分子生物學技術,研究化合物的分子作用機制,結果顯示化合物能對細胞生長和凋亡的路徑產生影響。研究結果有望提供對候選抗癌藥物在細胞水平的效能、選擇性以及對癌幹細胞的特異性反應的深入理解。 期望本研究成果可為癌症治療藥物的開發提供重要參考,並促使對癌症治療新方法的探索。這將有助於確定更具潛力的藥物候選者,為癌症治療領域帶來更具前瞻性的解決方案。
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探討粒線體蛋白質GATD3A的結構、功能以及去糖化機制
GATD3A 是粒線體中的蛋白質,被推測可能具有「去糖化」的能力,能移除AGEs。糖尿病、帕金森氏症、阿茲海默症皆與人體中過高濃度的AGEs有關,因此GATD3A具有相當高的研究價值。 本研究探索GATD3A(麩醯胺酸轉移酶樣1 類結構域 3A),經基因合成與蛋白表現後,大量製備蛋白質並探討其結構與功能。目前已得到蛋白質最佳製備環境、成功培養出蛋白質晶體,進行了結構分析,了解其結構、保守性、親水性及電性等,對於酵素適合反應的溫度、pH值也有初步了解。未來也會利用酵素動力學計算酵素活性、並製備糖化蛋白質,進行去糖化測試,探討 GATD3A 是否具有臨床運用於糖尿病患者之糖化血紅素去糖化的可能性。
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探討自我參照和社會訊息對不同年齡、性別連結記憶的影響
連結記憶(Associative Memory)為記憶兩物體之間關係的能力,會隨著年齡增加而衰退。先前研究顯示不同性別在記憶的老化程度存在差異,然而針對連結記憶在不同性別的老化未被討論。過去研究發現自我參照效應以及改變刺激材料的社會訊息程度可提升連結記憶的表現。然而缺乏同時使用兩種方法研究,兩者之間的交互作用尚不清楚。本實驗分別針對不同年齡與性別的群體進行連結記憶測驗。我們引導受試者使用自我參照記憶具有不同社會訊息程度的圖片,測量其連結記憶表現。結果顯示,女性有顯著的連結記憶衰退;而男性沒有顯著的連結記憶衰退,其記憶衰退可能與項目記憶有關。另外,我們也觀察到參照與社會訊息對連結記憶的影響具有交互作用,在未來實驗中有必要注意兩者之間的互相影響。
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應用多任務學習神經網路建構可識譜六孔竹笛機器人
本研究目標在建構可以識譜及吹奏中國笛的吹笛機器人。中國笛演奏必須協調吹法及指法;藉由控制吹氣流速、吹嘴角度及六指按壓音孔的變化來控制音高以完美地吹奏樂曲,是一項複雜的演奏技術。機器人以模擬吹笛口型的吹嘴,搭配兩個風箱往復送氣到一個壓力調節風箱送氣,以微控制板控制六個機械手指來蓋放完成演奏,為在音尾可確實止氣,設計一個風門,利用風門開闔也可模仿吐音技巧讓笛聲明確發音。辨識樂譜方面收集樂譜樣本,樣本分成譜線、音符、節奏三套,透過多任務學習MTL的深度學習架構進行訓練,建構可以辨識五線四間上下三線及全音符到16分音符及休止符的樂譜辨識模型。經測試若樂譜在符合音域範圍內,可以完整的辨識,轉換成音符資料傳送給吹笛機器人吹奏。
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熱不倒的番茄—耐熱細菌對番茄根莖之研究
本次實驗以地熱溫泉區的土壤中所篩選出的8隻耐熱菌種,並加以純化、液態培養,將8種菌液稀釋成度三種不同濃度(100X、200X、500X),以恆溫培養箱控制環境溫度(25℃、30℃、35℃)模擬環境變因,並測試和定量菌株的溶磷、固氮能力,亦測試載鐵、抗番茄萎凋菌能力及對於聖女番茄及桃紅番茄所帶來的影響。本研究發現 LC26 及 LC28 可於熱逆境下顯著促進聖女番茄生長,此外LC03亦能於熱逆境下明顯促進桃紅番茄生長。本研究也發現LC03、LC26及LC28對玉米及胡蘿蔔有最好的促進生長效果,而對青江菜有最明顯的抑制生長效果,可作為輪耕作物之參考。最後本研究發現這三隻菌種皆對大花咸豐草之生長有抑制情形,其中以LC26(500X)抑制效果最佳。
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本文研究了一個信息完全公開的組合遊戲,探討當一群人被完全隨機的分配到模型裡時,其初始位置與特定位置所形成的包圍關係,並探討最佳的人力分配。本研究通過座標解析與不等關係的代數運算等方法,成功找出獲勝條件對於遊戲雙方的限制,並進一步解決問題。在研究的過程中,也將結論擴展到不同模型,探討不同模型對於遊戲造成的影響,並比較其結論有何區別。
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Investigating the Effects of Temperature and Carbon Dioxide Levels on Nannochloropsis oceanica Using a Hemocytometer Counting Method
Climate changes that include ocean acidification and global warming are serious problems in the ecosystem, affecting marine phytoplankton, including Nannochloropsis oceanica. In the effort to further explore the impact of rising temperature and carbon dioxide (CO₂) concentrations on oceanic ecosystems, the phytoplankton Nannochloropsis oceanica was used as a model organism. This study explored the effect of temperature change and CO₂ concentration on the growth of Nannochloropsis oceanica, achieving 243 samples that were tested with three different temperatures (24 degrees Celsius (°C), 28°C, 32°C) and CO₂ concentrations (0 milliliter (ml)/min, 0.4 ml/min, 0.6 ml/min), utilizing a hemocytometer counting method. Results indicate that the CO₂ concentration has a significant effect on the population of Nannochloropsis oceanica. But the temperature doesn't affect a lot. The Nannochloropsis oceanica in the lowest temperature and highest concentration of CO₂ in its environment had the highest population growth, and in the highest temperature and lowest concentration of CO₂, it had the lowest population growth. Results show the serious negative effect of climate change on the cosystem and the importance of environmental protection. Population blooms due to excess CO₂ taking up ocean resources causing dangerous ecological imbalances.
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Eradicating Cystic Fibrosis Biofilms by a Novel Non-Toxic, Multi-Pathway Salicylate Therapy
1.1. Cystic Fibrosis Biofilms Biofilms are bacterial aggregates in a matrix of polysaccharides, proteins and nucleic acids (Donlan, 2002). They account for 80% of all chronic infections and cause over 500,000 deaths annually. Cystic fibrosis (CF) is a genetic disorder characterized by mucus accumulation in the respiratory tracts (Morrison et al., 2020). This impairs mucociliary clearance, allowing chronic colonization by bacterial biofilms, leading to fatal respiratory failure, lung scarring, and necrosis of pulmonary epithelial tissues (Martin et al., 2021). 1.2. Obstacles in Current Treatments Three major therapies are used against CF biofilms: (1) aminoglycoside antibiotics like tobramycin, (2)non-aminoglycoside antibiotics such as ciprofloxacin and vancomycin, and (3) non-antibiotic therapies including flushing, chlorination, and ultraviolet disinfection. These have two major flaws. First, they are cytotoxic; 30% of patients experience acute kidney injury after three days of intravenous aminoglycoside therapy (Joyce et al., 2017). Furthermore, non-aminoglycoside therapies can cause phospholipid buildup in lysosomes of proximal tubule epithelial cells, accounting for 10-20% of acute renal failure cases. Second, antibiotic resistance due to horizontal gene transfer and mutations has significantly reduced treatment effectiveness. Therefore, cystic fibrosis biofilms remain a critical threat with few effective treatments. 1.3. Salicylate Derivatives This project tackled this issue using an innovative non-antibiotic approach with salicylate derivatives. Salicylates, a class of benzoic acids—benzene-based carboxylic acids (Figure 1)—used in painkillers and blood thinners, were investigated for their antibiofilm potential through a 3-step process: 1. Literature review: Identified three key biofilm therapeutic targets: quorum sensing, bacterial adhesion, and cell motility. Disrupting these pathways would result in biofilm eradication. 2. Molecule Identification: Recognized key molecules in each pathway: LasR, adhesins, and flagellin. Inhibiting these molecules would disrupt the pathways. 3. Screening: Found that salicylates could inhibit the identified molecules, though they had never been tested against cystic fibrosis biofilms.
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探討候選基因對角質層與氣孔發育的調控之影響
植物進化成陸生植物的過程中,氣孔和角質層是關鍵特徵。氣孔由保衛細胞調控,負責二氧化碳進入和水分蒸發;角質層則保護植物免受水分流失及環境壓力。調控這些特徵的基因尚不明確。本研究利用全基因組關聯分析(GWAS)探討阿拉伯芥的角質層和氣孔發育。GWAS結果顯示,與角質層厚度相關的基因位於第二條染色體,而與二氧化碳吸收效率相關的基因位於第五條染色體。氣孔導度和水分吸收效率的調控基因可能在第一、三、四條染色體上。角質層變薄時,氣孔密度下降,導致氣孔導度和水分蒸散率上升;而當角質層通透性增加到一定程度時,二氧化碳固定效率達飽和。此外,透過反向遺傳學篩選候選基因,研究特定基因對角質層合成及光合作用效率的影響。突變株分析顯示,抑制控制角質層或氣孔的基因會促進另一性狀的表現,未來可進一步探討自然族群中相關基因的功能。
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此研究探討「在𝑛×𝑛的正方形中L型、T型和O型任兩種四方連塊」及「在𝑚×𝑛的長方形中LO、TO 兩種四方連塊」的拼圖可行性規律。我們發現拼片組合的可能性與正方形邊長有明顯關聯,透過黑白格排列法找出可行的解與排法,並分析不同邊長下的規律與極值,做出分類。此外,研究問題延伸至不同邊長分類下的𝑚×𝑛長方形,我們找到「最小圖形」,如由2個O或2個L組成的𝐿𝑂2×4。接著,定義「中圖形」以分析LO與TO拼片組合的數量規律,如由4個L和一個𝐿𝑂2×4組成的𝐿𝑂3×8。透過將長方形切割成以上圖形、分析性質、找出一般化的公式,進而推導出矩形中LO與TO數量的極值規律。
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Modal frequencies in a nonlinear beam-magnet coupled oscillator system
In this paper, I investigated the motion of a nonlinear coupled oscillator system consisting of two leaf springs secured to a non-magnetic base with magnets attached to the upper ends such they repel and are free to move. My results showed that the system exhibits the beats phenomenon, and interestingly that the frequencies show a dependence on initial conditions. I hence hypothesized this sensitivity is due to two sources of nonlinearities: geometric nonlinearity during large deflections of the leaf springs and the nonlinearity in the magnetic force. To test this hypothesis, a nonlinear mathematical model was developed, accounting for nonlinear beam effects up to third order and fully solving the nonlinear magnetic force using a current cylinder model, accounting for the tilting of the magnets. An approximate linear model was also developed for comparison. The theoretical models were validated experimentally by investigating the dynamic motion of the springs through time, as well as how the modal frequencies in the system depend on the initial displacement, the length of the spring, and the distance between the springs. The more accurate nonlinear model I derived shows good agreement with experimental results while the linear theory does not, highlighting the importance of nonlinearities in this system. An improved understanding of these nonlinear systems could lead to advancements in design and efficiency, and safety in various applications such as energy harvesting.
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