應用光敏電阻會隨照光強度而改變電阻大小的特性，設計一種經由測量電流值大小來比較茶色深淺的方法。進而探討曝氣、氧濃度、溫度、酸鹼度等變因對綠茶變色速率的影響，及變色成因為何？總結發現：1.綠茶在高溫、有氧、鹼性的環境下變色速率較快。2.綠茶中所含的兒茶素氧化是造成變色的主因。3.在酸鹼的影響下綠茶的變色是一種可逆反應。4.兒茶素是一種多酚類的化合物。

某次的生態觀察讓我們對蓬萊點琉璃蟻的特殊行為感到興趣，因此激發我們的好奇心，定為此次科展題目。針對我們感到疑惑的問題設計實驗，逐一探討與深入研究蓬萊點琉璃蟻，發現與文獻記載分布不普遍有所牴觸，經過實驗與觀察後了解蓬萊點琉璃蟻為優勢之歸化亞種，能應用於生物防治，有助於阻止外來種家蟻的擴散。

A total of 64 nonduplicate isolates of erythromycin-resistant (MIC, >1 μg/ml) Streptococcus pyogenes collected from 1979 to 2003 in Taiwan were evaluated. They were collected from three cohort period: 1979 –1989, 1990-1999 and after 2000. The in vitro activities of 10 antimicrobial agents were determined by the agar dilution method. Penicillin, cephalothin, cefotaxime, vancomycin, and ofloxacin were shown to be active against S. pyogenes isolates (100% sensitive). Erythromycin and azithromycin both had poor activities (MIC50s, 16 and >128 μg/ml, respectively; MIC90s, >512 and >128 μg/ml, respectively). The activities of tetracycline, clindamycin, and chloramphenicol against a significant number of these isolates were also limited. Among the 64 S. pyogenes isolates, 58% had constitutive resistance [cMLS], 40% had an M phenotype and 2% had an iMLS phenotype (inducible resistance [iMLS]). A substantial upsurge in the incidence of M phenotype erythromycin-resistant isolates was found with time for S. pyogenes (10% in 1979–1989, 48% in 1990–1999 and 65% after 2000). The erythromycin resistance genes in 64 isolates of the different cohorts were investigated by PCR. All cMLS phenotype isolates tested had ermB gene. The M phenotype isolates had only the macrolide efflux (mefA) gene. This study shows the secular changes of increasing susceptibility of S. pyogenes isolates to both erythromycin and clindamycin in Taiwan. The mechanisms of erythromycin resistance have changed from the predominance of ermB gene (cMLS) to mefA gene (M phenotype). 本研究是探討台灣自1970 年代末期以來不同世代A群鏈球菌菌株對紅黴素的抗藥性及抗藥基因特徵的演變。研究者收集台灣二十年前(1980 年代前後，第一世代)、十年前(1990 年代，第二世代)、)及最近(2000 年以後，第三世代)之A 群鏈球菌菌株共64 株，利用抗生素圖譜和雙藥錠擴散測試及聚合?連鎖反應(PCR)、和脈衝式膠體電泳研究A 群鏈球菌對紅黴素抗藥性的表現型及基因型特徵。結果發現第一世代的A 群鏈球菌對紅黴素最小抑菌濃度(MIC)值相當高，幾乎都是>512 μg/ml，90%為多重抗藥菌株。第二世代則相對有降低，在第三世代此現象更明顯，多重抗藥菌株為30%。在雙藥錠擴散測試結果，從第一世代來看cMLS 佔大多數(90%)，M 型佔10%；第二世代cMLS 及M 型相當分別佔52%及48%；第三世代主要為M 型佔65%，cMLS 佔30%，iMLS 佔5%。利用PCR研究紅黴素抗藥性基因發現所有cMLS 菌株皆有ermB 基因，所有M 型菌株皆有mefA 基因，iMLS 菌株則有ermTR 基因。由本研究顯示在台灣A 群鏈球菌對紅黴素之抗藥性隨著不同世代有逐年改善之趨勢，由MIC50的降低可看出，菌株對紅黴素的敏感性提高，可為臨床治療之參考。

將橘子汁塗在白色紙張，因為橘子汁內的一些抗氧化物質會與碘進行氧化還原反應造成碘還原成碘離子，而無法再觀察到所滴入的棕色溶液。如果將橘子汁換成檸檬汁，你會發現棕色不見了喔！

本文發展出一套內鏡射圖形的尺規作圖法，由此作圖法操作中發現奇數邊多邊形的內鏡射圖形是唯一的，而偶數邊多邊形卻有無限多個。本文主要探討多層次內鏡射圖形的存在條件，依條件給定的各組內角，必可操作到指定的層數，當給定的各內角愈接近正多邊形的角度時，可操作到的層數愈多。

市售可重複使用的熱敷包是由過飽和醋酸鈉水溶液製成，為什麼平常不會結晶，只有扳動金屬片時才會迅速結晶而放熱？一般書籍均以為金屬片上粗糙的凹痕可做為晶種(1-2)。也有人認為是以金屬片發生的聲響引發結晶（3）。根據我們的研究，求出醋酸鈉溶液在過飽和度0～0.9 之間是半穩定狀態。同時排除聲響、振動、凹痕作為晶種等猜測，證明是由凹痕中彈出晶種引發結晶，而且我們發現長尾夾可以取代金屬片引發結晶，使自製熱敷包變的更容易。我們也證實醋酸鈉晶體的水合物不只三水合物一種。

有一天，媽媽買了一塊新的砧板，好奇的妹妹，拿著蘿蔔在上面切，切出許多不同的形狀，我覺得很好玩，試著拿起蘿蔔來切，也能切出許多不同的形體像圓形、橢圓形。到了學校我請教老師：「 一條蘿蔔到底能切出多少變化呢？」於是在老師的指導下，我們開始了有趣的切蘿蔔研究！

某天風和日麗數位同學相邀至河邊捉魚，在河中暢遊一番後發現個人於水面上的褲管沾濕的高度各有差異，而我們了解，不浸水部份之所以會濕乃毛細現象所致，但何以沾濕高度會因質料而異呢？於是引發我們對毛細現象作進一步的探討。

星期日，我和媽媽坐汽車到外婆家，車子在馬路上，忽然上、下顛動幾下，回頭一看，原來是路面壞了。我想：「好好的柏油路為什麼會破裂呢？」回到學校，我和幾位同學去請教老師，老師為我們說明一些有關柏油路的間題，並希望我們去實驗尋求答案。我們就著手收集一些資料、器材，並請教老師指導方法，開始我們的實驗工作。

In this work, techniques to explore the capabilities of multi-walled carbon nanotubes\r (MWNTs) in sorting nanoparticles (NPs) were presented. A droplet of a solution comprising of quantum dots (QDs) with various sizes was deposited on an aligned array of intertwined MWNTs. Photoluminescence (PL) and fluorescence microscopy (FM) revealed that MWNTs were effective nano-sieves that could effectively sort out QDs with a size difference of ~ 2.1 nm.\r Cadmium Selenide/Zinc Sulfide (CdSe/ZnS)core-shell QDs and Cadmium Sulfide (CdS) QDs were used to explore whether chemical properties of NPs affect the sieving capability of MWNTs. Further investigation on the effects of micro-patterning on the sieving ability of MWNTs was also carried out.PL and FM results suggested that micro-patterning could aid in separation of QDs and thus improve sieving capability of MWNTs. With the above findings, QDs emitting different colors as a result of size difference could efficiently be assembled onto the MWNTs en route to three-dimensional architectures with controlled assembly of NPs.\r Together with controlled laser power to remove desired amounts of QDs decorated MWNTs, a multi-colored display could be achieved. Further experiments were also carried out to determine the feasibility of introducing MWNTs as filters for NPs. Dilute solutions containing NPs such as gold colloid was run through these MWNTs filters by gravity. Field emission scanning electron microscope (FESEM) images of the samples showed that MWNTs were successful in trapping the nanoparticles. Explorations into the length dependent effect of using MWNTs as filters, suggested that 300μm MWNTs are better nano-sieves compared to 50μm MWNTs.