全國中小學科展

2025年

法拉第波輔助合成奈米鎳並應用於有機污染物的快速脫色 Nanostructured Nickel Synthesized through Faraday Waves and Its Application to Rapid Contaminants Decolorization

超音波已廣泛用於奈米粒子的製備,然可聽聞音對奈米粒子製備的影響卻少有研究。本研究以簡易喇叭裝置產生可聽聞音並在溶液表面產生法拉第波及內部流動,來輔助製備奈米鎳。法拉第波是一種表面非線性駐波,透過調整容器形狀、振動頻率等,可產生不同波形。本研究嘗試在法拉第波輔助下,以化學還原法及電沉積法製備出不同性質的奈米粒子。SEM量測並比較無輔助、法拉第波輔助、超音波輔助製備出的奈米鎳的形貌、分布的差異。並將其應用於有機物(即剛果紅、亞甲藍、4-硝基苯酚、2-硝基苯酚)之催化還原。而由SEM量測、催化還原結果及理論模擬反應熱可知,法拉第波確實能夠改善奈米鎳的粒徑大小、分散性、對氫的吸附能力及催化還原能力。

探究螢光單體分子對激發複合體發光性質的影響及其應用

本研究設計與合成一系列的電子供體分子,以研究分子單體的化學結構對於所形成的激發複合體光物理性質的影響。 五個所設計的供體分子已被成功的合成並確定均具有分子內電子轉移的性質 其躍遷偶級距變化分布範圍在17.6-28.6D之間。 將此五個供體分子分別與兩種電子受體分子在溶液聚集在一起,利用在長波長處所新生的螢光發光,推測激發複合體的形成。研究的成果並顯示,具有類似三角形結構的供體分子將更容易形成激發複合體,而具有棒狀結構的分子則較不易形成之。此成果有效的提供有關於單體分子結構的設計對於所需激發複合體光物理性質的影響,形成可快速地提供各式不同發光波長的材料,將可作為在發光二極體發光層材料、螢光感測器、生物成像等領域需求時的分子設計藍圖與指引。

Plantastic Pods: The Grow Stick Rooting Revolution for Seeds & Cuttings

Cultivating plants from seeds or cuttings is a fundamental aspect of gardening and agriculture. While traditional methods have been practiced for centuries, there is a persistent need for innovative and efficient approaches to enhance plant growth and development. This section explores the challenges associated with traditional propagation methods and examines potential solutions offered by emerging technologies and materials. Plant propagation is necessary to allow efficient multiplication and distribution of desirable plant varieties (Sorensen & Garland, 2024). Plant propagation is the process of creating new plants. There are two primary methods of propagation: sexual and asexual. .Sexual propagation involves the union of pollen and egg, drawing genetic material from two parent plants to create a new, genetically diverse offspring. This process utilizes the floral parts of a plant. .Asexual propagation, on the other hand, involves taking a part of a single parent plant and inducing it to regenerate into a new plant. The resulting offspring is genetically identical to its parent. This method utilises the vegetative parts of a plant, such as stems, roots, or leaves. One emerging technology that has garnered attention in this field is the use of cocopeat, a sustainable growing medium derived from coconut husks (Pane et al. 2021). Cocopeat has been extensively studied as a potential alternative to peat moss in plant propagation (Gericke, 1940). It offers a favourable balance between air porosity and water holding capacity, promoting root development and nutrient uptake (Kalaivani and Jawaharlal, 2019). Furthermore, cocopeat is a renewable and environmentally-friendly resource, making it an attractive option for sustainable seedling cultivation. Research has shown that the use of cocopeat as a growing medium can enhance the growth of both vegetables and various ornamental plants, such as Impatiens. The biostimulant effect of the Trichoderma atroviride fungus, which can readily colonize coir, has been observed to increase aboveground biomass, flower production, pigments, and nutrient concentration in these plants (Traversari et al., 2024).

克雷伯氏肺炎菌莢膜型K47菌株之噬菌體分離及其莢膜多醣分解酶表現

克雷伯氏肺炎菌(Klebsiella pneumoniae)近年來於亞洲盛行,其除了傷害健康外,亦對於醫療經濟造成一定程度的影響。隨著時間發展,此細菌也逐漸獲得了抗藥性,使早期使用之抗生素不再有效,因此,尋找治療此疾病的替代療法成為近年來持續被關注的議題。由於其對細菌具高度專一性,噬菌體之莢膜多醣分解酶被認為極具開發抗生素替代療法之潛力。 本研究陸續於污水中分離純化出1212P2、H-P7、H-P8、0505P5、0505P6、05052P5、0505Kp3等噬菌體,並藉由一系列實驗,篩選出可能具有莢膜多醣分解酶的噬菌體。最後將候選噬菌體1212P2、0505Kp3進行全基因定序。 未來,將進行全基因序列分析,若成功比對並找到具有莢膜多醣分解酶潛力之基因,我們將對其加以表現並測試活性。並進一步進行體內試驗檢驗此噬菌體或其莢膜多醣分解酶的效力,探討其是否能作為開發藥物的工具,為對抗克雷伯氏肺炎菌盡一份努力。

Autonomous Ecosystem Surveillance Vehicle

As of 2021, there are 368 harmful algae blooms and over 6000 invasive species in the United States of America. Furthermore, it is reported that the United States spends more than 11.1 billion dollars per year on clean-up methods for marine debris. However, there currently isn’t a method to monitor aquatic problems simultaneously, autonomously, and efficiently, creating a capability in the aquatic biosecurity sector. To combat this, we have created an autonomous vehicle that can conduct long-term monitoring of freshwater bodies for up to 60 hours.

Development of MBR, CO2 absorption ball

We invented the Midori which means green Bioreactor (MBR), beads of euglena and other microalgae fixed in calcium alginate that absorbs carbon dioxide (CO2). We examined the effect of 19 different solutions and two different organisms on MBR cultivation. Surprisingly, when the MBR was supplied with carbon dioxide or cultured with yeast, they became drastically darker green. Chromatography revealed this green color to be that of microalgae such as green algae or Euglena because chlorophyll a and chlorophyll b were detected. Under sunlight, MBR absorbed CO2 and the absorption rate was 1.5 L CO2/day/1L of MBR. Furthermore, when we put MBR in the water tank, they increased the amount of dissolved oxygen without polluting the environment. These results indicate that MBR can absorb CO2 by photosynthesizing without leaking out the inside microalgae.

情感分析生成器—自動生成文字感染情緒

隨著網路技術不斷的進步,意見和情感分析逐漸成為人們日常生活中的一部分。儘管如此,目前人們缺乏一個方便且快速的情緒分析模型,供廣大大眾使用。 本研究旨在提供人們一個緩解憂鬱情緒的管道——當人們輸入一個需要被安慰的情境時,我們的系統將輸出安慰語句,以緩解該使用者之憂鬱情緒,達到安慰效果。為此,本研究訓練了BERT model以及 LLaMA model。BERT model能判斷使用者輸入的語句是否為需安慰語句。而LLaMA model則作為安慰語句之生成模型,以達到安慰之效果。

Wrong seating around the table

本研究探討在一場圓桌會議中,n人逐一亂序入場找尋各自對應的名牌編號(1~n號)入座,其中1號第一個入場並坐到了k號位,此後入場的人們若發現與自己編號相同的位置是空的,就直接入座;若與自己編號相同的位置被占走了,就以逆時針方向尋找空位入座。在上述的規則下,若共有n 人,且 1 號坐到 k號位的情況,給予與問題相關統計量的組合證明。後續本研究將規則改為1 ~ p號 按照順序進場且皆想坐到 k 號位的前提下,探討了坐錯的人們是怎麼樣的循環和坐錯人數的次數分佈。並多數的研究結果皆與 stirling numbers of the first kind 有相關。 本研究還 探討了共有 n 人,且 1 號坐到 k號位的情況下, 坐錯人數的標準差函數的遞增情況 與對數函數完全曲線相關。

突破能量屏障:探討原始固碳路徑中異檸檬酸脫氫酶的角色

原始生命的形成被推論是由化學分子透過自發性化學反應組成簡單的代謝路徑,再由這些路徑組合成為複雜的代謝網絡,最終形成原始的生命。由於自營性的代謝路徑可將無機性的CO₂固定為有機物可謂形成生命的前提,因此推論在自營性微生物所擁有的一種生物固碳路徑,可將CO₂固定進入三羧酸循環的「逆向三羧酸循環」被認為是原始細胞最初形成的代謝路徑之一。然而,以化學反應的自由能考量,自2-Oxoglutarate到Isocitrate 此固碳反應並非自發性反應,並由異檸檬酸脫氫酶催化。異檸檬酸脫氫酶在逆三羧酸循環中是決定固碳反應速率的關鍵酵素之一,在當今正向三羧酸循環中亦具重要的調節細胞能量代謝的功能。有鑑於此,本研究探討源自古老地球環境的嗜熱自營菌Aquifex aeolicus 中異檸檬酸脫氫酶的酵素性質,並期待本研究成果對生命起源的探究及發展新穎固碳技術能有所助益。

Development and Comparison of a Small-Scale Toroidal Horizontal-Axis Wind Turbine to a Conventional HAWT Design

Wind energy is one of the most promising and rapidly growing sources of renewable energy, although maximizing its efficiency while minimizing noise remains a challenge and limits its widespread adoption. The emergence of toroidal propellers, which have gained popularity for producing comparable thrust levels to traditional drone propellers while producing less noise, could mitigate this. This study aimed to develop a small-scale toroidal HAWT and compare its power and noise output to a conventional rotor design under similar wind velocity conditions. 15-centimeter diameter models of the toroidal and conventional rotors were created in Fusion 360 and simulated using Ansys Fluent to identify the significant aerodynamic characteristics that positively affect the blades’ power coefficient. The toroidal design with the greatest simulated power output at low tip speed ratios (TSRs) was then 3D printed and physically tested in a wind tunnel against the control rotor. The experimental results confirmed that the toroidal design had greater power coefficients at lower TSRs compared to the control rotor. The toroidal rotor started operating at a wind velocity of 3 m/s compared to the control rotor’s 6 m/s, which indicates superior start-up characteristics. While the toroidal rotor produced half the power output of the control at the highest tested wind speed of 7 m/s, it emitted 18 decibels less noise and showed a reduction in discernible noise between frequencies of two to five kilohertz. The results from this study show its potential in low-noise wind turbines within low-wind velocity environments.