“熱巧克力效應”是當你將巧克力粉加入裝有熱水之馬克杯後用湯匙輕敲杯壁，可以聽出攪拌前後敲擊所得聲音頻率明顯不同，攪拌後巧克力粉溶解頻率會較高。一般論文的解答是「當粉末溶解的時候，藏在粉末裡的空氣就會跑出來，在空氣與水混合的環境裡，音速比在水裡低。當水裡不斷有空氣與水混進去時，這個容器的共振頻率和它裡面的音速有關，所以也會降低。因此你會聽到較低之音調，直到空氣全跑光。」但根據我的實驗我覺得這樣的解釋並不對。我們提出新的模型來解釋“熱巧克力效應”。When we put an ounce of dry chocolate powder into a mug filled with hot water, then tapping the side with your spoon will generate a sound. The pitch of this sound will rise after stirring. This is called “the hot chocolate effect”. According to a published paper, the explanation is “The air trapped in the powder is released as the powder dissolves. Since the speed of sound is lower in air than that in water, the speed of sound in the air-water mixture is lower than that in pure water. During that period while the air escapes the container, the resonant frequencies of the water, which depend directly on the speed of sound, will also be lower. Hence, you hear a lower tone until the air escapes”. However, our experiments clearly demonstrated that the explanation is plainly wrong. A new theoretical model is also proposed for the observed phenomenon.

無疣蝎虎（Hemidactylus bowringii）與蝎虎（Hemidactylus freuatus）分類上屬蜥蜴目守宮科蝎虎屬，為本島住家附近常見且生態地位相近的壁虎，近年來因人為因素使原本有地理區隔的兩種壁虎在北部地區產生共域現象。本研究利用問卷來調查兩種壁虎分佈狀況，並用「體型大小」、「食物競爭能力」兩種指標，設計實驗評估種間競爭程度，來探討兩種居家壁虎種間競爭程度。問卷調查及物種採集結果顯示，在台北市各行政區確實存在共域現象，且分佈數量互有消長。體型大小比較上，蝎虎體型較無疣蝎虎稍大，但在統計上無顯著差異。食物競爭能力強弱比較上，以斷尾後尾巴增長量為指標，結果兩者大致相等，無顯著差異。綜合以上研究結果，顯示兩者共域後會出現種間競爭現象，程度大致相等，有互相消長現象。Hemidactylus bowringii and Hemidactylus freuatus are commonly seen in Taiwan, and their habitats are very near the area people live. Recently, two species have inhabited the same or overlapped geographical areas in northern Taiwan. This sympatric phenomenon resulted from the geographical isolation being broken by people. This research investigated their distributions in Taipei city by using questionnaire, and evaluated the degree of interspecific competitions by using indexes of the body size comparison and the food competition to design our experiments.According to results of questionnaire and animal sampling, two geckos did inhabit closely in some areas in Taipei city, and their population distributions were changing with time. According to the result of the body size comparison, Hemidactylus freuatus is bigger than Hemidactylus bowringii. But there is not a statistically significant difference between two species. The degree of food competition of two species was all square. In summary, it was occurred the interspecific competition between Hemidactylus bowringii and Hemidactylus freuatus, and the degree of competitions was almost equal.

本研究旨在探究愛玉凝膠。並發展有效的硬度測試裝置－以線鋸方式，將切開愛玉所需重量作為硬度數據，以此測試不同條件製作的愛玉。 結果顯示藉摩擦、水流衝擊可溶出愛玉膠質，最佳凝膠條件為：用礦物質較多的水、40℃攪拌、靜置溫度20℃以下、pH=11，且愛玉子越多，攪拌時間短且硬度高；若子少，則攪拌時間長且硬度低。若將子打碎、或添加油則會阻礙凝膠。 用各種鹽類溶液製作愛玉，特定濃度下可促進果膠酯?活性，凝膠硬度高，但大量出水，若希望硬度夠又不出水，可用氯化鈣0.03%、氯化鎂0.01%、氯化鈉0.1%、碳酸鎂0.005%、碳酸氫鈉0.01%、碳酸鈉0.01%、硫酸鈣0.02%或硫酸鎂0.05%水溶液；用飲料做愛玉以麥茶、綠茶最佳，汽水失敗、牛奶過硬。最後，配合水質、溫度，用電動打蛋器設計簡易方法製作愛玉，供大眾參考。

牙菌斑附著於牙齒表面，面積小不易被發現。只有牙菌斑指示劑能顯示出牙菌斑，可用於評估刷牙的效果，但一般只有在牙科診所使用，且價格不便宜，找到經濟實惠和簡易的物質，並且具有牙菌斑指示劑的功能，格外具有重要性。在此研究中，我們嘗試用紅色火龍果的汁液，作為牙菌斑指示劑，在家進行自我口腔牙菌斑的檢測，來減少齲齒發生。 我們採樣檢測人體牙菌斑的六種變化，利用紅色火龍果內含大量花青素的成份，在pH 8時呈現紫色鹼性染料，來做為牙菌斑指示劑。 紅色火龍果的汁液，可用來辨視牙齒上的牙菌斑染色效果，在堆積量及菌量數，是有明顯的差異，也印證除牙菌斑指示劑外，可利用生活中的食物來應用。

本研究在探討薑黃、南薑、野薑及一般薑等所含薑黃素的抑菌與抗氧化作用特性，及其在生活及教學上之應用。研究發現：（1）抑菌能力排序：以薑黃最強；一般薑次之；南薑、野薑微弱。（2）抗氧化作用仍以薑黃最為明顯，其餘不顯著。（3）在生活上之應用方面，薑黃素用於檢測水質及食品中是否含硼砂，可明確檢出含硼量；薑黃素所含的天然色素，可用於布料之染色及食品用色素添加劑，亦可用於製造薑黃手工皂，對人體皮膚有益處。（4）在化學實驗上，薑黃素製成薑黃試劑，可做為酸鹼指示劑，另可檢驗一般居家物質之酸鹼性。由以上實驗結果可知薑黃素應用甚為廣泛且深具利用價值。