全國中小學科展

出國代表作品

「金」枝「玉」葉—金奈米與葉綠素的交互作用

本實驗在探討,當金奈米粒子和植物中的葉綠素產生鍵結作用力時,能量轉移的結果是否能幫助葉綠素激發電子。經由兩者混合後光譜的變化,發現兩者之間發生能量轉移。為探討此轉移現象和濃度的關係,我們將大小不同的金奈米和不同毫升數的葉綠素作用,並將其結果和金奈米與葉綠素的吸收強度和作比較,使用正規化的計算方法算出比值,由此看出兩者之間能量轉移的效率。當金顆粒約大於30nm時,正規化的數值隨的葉綠素濃度的增加而變大;而當金奈米顆粒約小於30nm時,則隨著葉綠素的增加而變小。Much attention is currently focused on chromophoric molecules because they can not only mimic natural antenna systems but also exhibit unique optical and physical properties. Chlorophyll , produced by extracting from green leaves, has electrostatic interactions with Au nanoparticles through carboxyl groups. Herein, we report the charge transfer between chlorophyll and Au nanoparticles using UV-vis electronic absorption spectroscopy. The efficiency of charge transfer from chlorophyll to Au nanoparticles was estimated by the normalization of Q-ban absorption intensity. From the observation of absorption intensity versus concentration of chlorophyll curves, we find that the efficiency of charge transfer is increased while the size of Au-particle is larger than 30nm, but decreased while the size smaller than 30nm.

瓦斯熱水爐一氧化碳觸媒轉化器之研究

瓦斯熱水爐使用大火時廢氣的CO 濃度非常高是導致一氧化碳中毒事件的關鍵原因,要解決這個問題觸媒轉化是一種可行的方式。影響觸媒性能的因素中以活性中心的種類最為重要,我們發現對轉化一氧化碳為二氧化碳的反應而言鈷有最好的催化效果,其次分別為:鎳、銅、鐵。最好的載體是三氧化二鋁,鈷的含量使用10%,煅燒溫度使用300℃可兼顧性能與成本。 本研究中所研發的 Co/Al2O3 觸媒具備有實用的潛力,可以在空間速度高達1000min-1 的情況下將濃度14,632ppm 的CO 百分之百轉化為CO2,而僅需233℃的反應溫度。因此,應該可以應用在瓦斯熱水爐上以降低一氧化碳中毒的風險。 The incorrect usage of a natural gas powered water heater always generates high carbon monoxide concentration in a closed environment. The dangerous CO gas can be fatal to the careless user of the water heater. Catalytic conversion of CO to CO2 can be a convenient method to solve this problem. The effect of the support, the supported metal, loading of the metal, reaction temperature, gas concentration, and reactants flow rate on the performance of the CO oxidation catalysts have been investigated. X-ray diffraction, gas adsorption and Infrared spectroscopy were applied to study the characteristics of catalysts. A 100% conversion of CO to CO2 can be achieved when 1.46% CO/6% oxygen/N2 reactants was catalyzed by a 10% Co/Al2O3 catalyst at 233℃ with a space velocity of 1000min-1 . This reaction condition is sufficient to remove the entire CO generated by a family-sized natural gas water heater.

一后多夫否?黑棘蟻(Polyrhachis dives)聚落生殖策略之研究

A vast amount of research has been conducted on various ant species such as Monomonum pharaonis, Formica rufa, and Lasius niger, demonstrating the coexistence of polygyny and monogyny colonies. In polygyny colony, the high heredity variability of filial generation could be expected, but what could the monogyny colony do to hold the high heredity variability in order to increase the fitness? I hope I can account the sex ratio in the colony of spiny weaver ants, Polyrhachis dives, and compare the different colony with different reproductive strategies. I also want to check by V8 that the colony can form a polygyny colony and virgin queens can mate with many males of the same colony in the artificial nest. The results suggest that in the colony of spiny weaver ants, the higher the number of the dealate queens, the lower the number of the male. In the monogyny colony, workers control the sex ratio. According to the observation, we can see the alate adult mate in the artificial nest, and multimating can be recorded for the first time. The following study was there for undertaken to examine what’s the aftereffect made by the Reproductive strategies of polygyny colony and monogyny colony.在多后聚落內,子代變異度高是可以預期的,但是單后聚落中,又如何維持遺傳的變異度以增加其對環境的適應力呢?我們希望能計算黑棘蟻聚落組成,比較不同生殖策略的聚落之各種性比,並且錄影證實黑棘蟻聚落可以為多后聚落並進行巢內自交。我們發現:黑棘蟻聚落內,蟻后數愈高,則雄蟻比例較低;單后聚落之性比決定於工蟻;而根據錄影觀察,聚落中的有翅生殖族可在人工蟻巢中完成交配,多次交配的現象首次被實地紀錄,並且佔所有交配新生蟻后的92.8%。本實驗可利用黑棘蟻來了解單后與多后聚落的生殖策略對其族群發展的影響。

結合Hamiltonian與Hiroimono的路徑研究

Hamiltonian和Hiroimono路徑問題都有百年以上的歷史,且沒有直接解決方法,可能因為是題目本身的條件在討論時尚不足解決問題,現階段只能用電腦去跑。

YWHAZ(14-3-3ζ)蛋白在肺腺癌細胞中可能活化Wnt路徑之探討

YWHAZ(14-3-3δ)蛋白被證實在肺腺癌中會引發上皮-間葉的轉變作用(epithelial - mesenchymal transition ; EMT)導致癌轉移,然而其分子機制卻不清楚。先前實驗室利用cDNA微陣列技術(microarray)發現肺腺癌細胞大量表現YWHAZ蛋白會導致Wnt訊息傳遞路徑之相關基因大量表現。因此,本研究目的是探討YWHAZ蛋白在肺腺癌細胞中是否會活化Wnt途徑而引發EMT。\r 本研究結果發現大量表現YWHAZ蛋白除了會增加細胞質中β-catenin的表現量,也會增加細胞核內 β-catenin 和TCF4 的蛋白表現量,並且在細胞核中與β-catenin和TCF4形成複合體;而臨床肺腺癌病患檢體中發現,相較於正常肺葉組織,YWHAZ蛋白與β-catenin在肺癌組織的檢體有較高的表現量,同時少部分會進入細胞核內。經由以上結果,我們推測YWHAZ蛋白可能會結合β-catenin與TCF4蛋白並活化Wnt途徑,因而引發EMT之產生,而促進肺癌轉移。說明YHWAZ蛋白有潛力成為日後診斷肺腺癌的指標蛋白(marker protein),同時亦成為治療肺腺癌的標的蛋白(target protein)。\r 重要性\r 1.提出YWHAZ可能在肺腺癌細胞中活化Wnt訊息傳遞路徑(Wnt signaling pathway)而導致癌轉移。\r 2.再度指出YWHAZ在腫瘤生物學的重要性。\r 3.對於肺腺癌轉移提供了臨床診斷及治療的另一種選擇 ─ YWHAZ。

無孤力點無交錯分割的區塊細分及五個新的Riordan組合結構

將一個集合{1,2,...,n}分成數個非空的集合(組,區塊),稱為此集合的一個分割。如果可以找到1 ≦ a 已知無孤立點無交錯分割以Riordan 數{rn}n≥0 =1,0,1,1,3,6,15,36,... 來計數。在這篇文章中我們研究無孤立點無交錯分割的一些性質。 首先我們考慮無孤立點的無交錯分割按區塊的細分。我們得出:集合{1,2,...,n}恰含k個區塊的無孤立點的無交錯分割的個數為: 其次,我們證明bn,k和多邊形的剖分有令人訝異的關連。令dn,k是用不相交對角線將凸n 邊形分成k 塊的方法。我們用代數方法證出 bn,k = dn+2−k ,k,也給了一個新的組合證明。 最後,透過對應的方法,我們找出了七個嶄新的組合結構,這些結構都是以Riordan 數來計數。 Partition the set {1,2,...,n} into several nonempty sets (blocks) and call it a partition. If there exists 1 ≦ a It is known that the nonsingleton noncrossing partitions are counted by Riordan numbers {rn}n≥0 =1,0,1,1,3,6,15,36,... In this paper we study the properties of them. First we consider the enumeration of nonsingleton noncrossing partitions in respect to the blocks. We prove that the number of nonsingleton noncrossing partitions of {1,2,...,n} with k blocks is Then we give a connection between nonsingleton noncrossing partitions and polygon dissections. Let dn,k be the ways to dissect an n –gon with noncrossing diagonals. We prove that bn,k = dn+2−k ,k We also give a combinatorial proof. Furthermore, by way of the technic of bijection, we find 7 new combinatorial structures counted by Riordan numbers.

大氣層厚度光學測量法之研究及創新

這個專題研究的目的是要發展出一套簡單可靠的方法和廉價自製的器材,在地面上即能有效估測大氣層的厚度。我們小組研究光學中雷氏(Rayleigh)散射的原理,針對空氣分子對光線散射作用和特定方向之偏極效應,利用一已知散射長度之路徑,測量其偏極光的強度,同時比對由大氣層散射而來,在同一偏極面上的散射光強度,即能估算大氣層的厚度,方法簡單新穎,自製器材經實際測量和改進,有發展和推廣的價值。\r The main idea of the experiment is to set a system in order to effectively estimate the thickness of the atmosphere. On the theory of “Rayleigh Scattering” (small air molecules sizing about 10-4μm), we developed an equipment that has two tubes. The tubes lead the scattered lights from two paths. One is called “air light” scattered in the ground air, and the other “sky light” is scattered in the sky and reflected by a beam splitter. The two paths are on the same plane; the scattered lights are perpendicular to the direction of sunlight and 100% polarized. We could adjust and measure the distance “d” of the air light path. We simultaneously observe and compare the intensity of the lights from the two paths with the electronic instrument made by ourselves. By using the known distance “d” and the reflection “x” of the beam splitter, we can calculate the thickness of the atmosphere. The experiment is simple, novel and easy to do in an extensive field at school. Researchers don’t have to use a bloom, radar or satellite to discover the atmosphere, but you could use a simple equipment to observe the features of it.

氣體式毒氣淨化器

由於一氧化碳之毒性氣體無色無味且不易發現,對我們的生活造成嚴重的威脅,本作品建構出一套可發布警報、能在極短的時間轉化一氧化碳的毒氣淨化器,也進而說明其獨特性與前瞻性。 \r 本研究的核心,在於室溫下能啟動金觸媒的轉化機制,亦針對平常少被討論、以含浸法製作的金觸媒加以分析和提升,發現利用NH4OH 鹼溶液處理方式並以573K 的O2?燒處理活化觸媒,能有效提升1%Au/Al2O3觸媒對CO+O2的反應活性。使用相同製備方式在Au/TiO2觸媒上於250K 即可達到100%的CO 轉化率。創造一個簡易的流程來製備高活性的觸媒,其作用活性的範圍溫度也相當廣。 \r 本淨化器在實驗中的運作狀況下,能完全轉換一氧化碳含量至低於中毒安全標準內,本系統還設計一道封閉閘門,有利於金觸媒的活性封存。 \r 本作品具有較低成本的觸媒量產流程與材料,觸媒本身也可回收後再活化,此能更符合觸媒市場需要;機體器材替換容易、安全性高等能有效避免中毒意外的發生。

大安水蓑衣(Hygrophila pogonocalyx)的復育對黑擬蛺蝶(Junonia iphita iphita)食性偏好??

大安水蓑衣(Hygrophila pogonocalyx)為局限分佈於臺中縣沿海溼地之稀有植物。大量境外復育栽殖後,造成近年來黑擬蛺蝶(Junonia iphita iphita)利用此種新寄主植物的比例增加。本實驗比較黑擬蛺蝶在原寄主植物臺灣馬藍(Strobilanthes formosanus)及新寄主植物大安水蓑衣上之生長環境遮蔽度、幼蟲生長發育、雌蝶產卵偏好的差異,探討大安水蓑衣復育對黑擬蛺蝶族群可能造成的影響。實驗結果發現利用大安水蓑衣之幼蟲生長發育較佳、羽化後成蟲體型較大、有效積溫常數較低。雌蝶產卵行為可能存在兩種偏好性,且子代雌蝶對寄主植物的偏好性與親代一致,不受幼蟲期取食植物影響。偏好新寄主植物之雌蝶其子代的生長發育,利用新寄主植物者顯著較利用原寄主植物者佳,顯示其對原寄主植物的適應顯著下降。本研究認為大安水蓑衣的復育結果,造成黑擬蛺蝶族群在可能共域的情況下,因為利用新的寄主植物可能已產生初步分化的現象。Hypgrophila pogonocalyx is a rare plant species which is distributed in wetlands along seashore of Taichung County. Recently, I found that the common butterfly Junonia iphita iphita recognized H. pogonocalyx as a new hostplant because of the restoration practices of H. pogonocalyx. We compared the differences of forest overstory coverage, larval growth performance and female oviposition preference between J. iphita iphita individuals exploiting the H. pogonocalyx and those utilizing the original hostplant Strobilanthes formosanus. Possible effects on J. iphita iphita by restoration of H. pogonocalyx are analyzed and discussed. It turns out that better growing performance and longer adult forewing length were found on the larvae feeding on H. pogonocalyx than those on the S. formosanus. Besides, the larvae feeding on H. pogonocalyx demonstrated lower constant value of effective accumulated temperature, suggesting that the new host may provide more energy to the larvae than the original host does. Two types of female oviposition preference seem to exist. No matter which hostplant the larvae fed on, the female adults still maintained the oviposition preference of the parental generation. Offspring of H. pogonocalyx-preferring female had better performance on this new hostplant. Our studies showed that the restoration of H. pogonocalyx might have caused primary differentiation of J. iphita iphita by using new hostplant in sympatry with the original hostplant.

排印OnLine-PHP 在文字圖形的應用

從小習染之餘,對篆刻藝術的濃厚興趣及對電腦程式之熱愛,萌生將篆刻藝術與電腦 科技結合,於是應用PHP(Professional Home Page)的文字圖形(Text Image)處理功能 將中華文化之篆刻藝術透過網際網路推廣到世界各角落。本研究規劃建置了一個 FreeBSD Server 可完善處理PHP 功能的作業平台、應用PHP 的文字圖形處理功能,編 寫可在線上DIY 設計印章的程式,以及藉由Java Script 的技術在Client 端建立一個人 性化且相容性高之使用者界面網頁,達到提供多語系、多功能、依使用者偏好作調整 印章及輸出分享的功能。為使非漢語系國家能深刻體驗中華篆刻藝術,本研究同時建 立一個超過三萬筆之由英文名音譯中文名的資料庫,提供給使用者切身的服務。 Inspired by the interest of the art of seal engraving and the love for the computer programming beginning from my childhood, I combine the art of seal engraving and computer technology, and apply the Text-Image's function of PHP to promote the seal-engraving art of Chinese culture via the Internet to everywhere around the world. This project constructs a FreeBSD Server to process PHP platform perfectly, applies the Text-Image's function of PHP to write a program for online DIY pattern design, and uses Java Script to establish a human and compatible user-interface web page for clients to provide multi-language, multi-function, and being able to adjust pattern according to the user's preference and output sharing functions. This project also sets up a database of English-Chinese translation of over thirty thousand English terms to help people who are not Chinese to experience the art of seal engraving.