1. Purpose of the research\r Nowadays, many encryption software are available to computer user. However, very few people use them which result in many cases of information and data leakage due mainly over the Internet. Most people use USB Flash Drive to store and carry confident files back home to work on. When the USB Drive is lost, the files stored are often leaked. To prevent this type of incident occurring, “CryptoDefender” is developed to enhance files protection and to change user’s habit in handling confidential information. \r 2. Procedures\r “CryptoDefender” is an add-in for common application software, e.g. Word, Excel, etc. It will appear as a new tab in the ribbon which provides the software an alternative for saving and opening a file. It protects the files in two ways: encryption and steganography. The data is first encrypted into cipher text as these encrypted data will be hidden in an image file to lower suspicion of readers. All of these procedures will be done by one click. For encrypt and decrypt, the user just needs to click the “Protect” and “Decrypt”. An extremely fast way to encrypt the file is “Quick Protect”. It will randomly choose an image from the image folder according to their file size. This function saves the time for choosing an image.\r 3. Data\r The method for steganography is using last two bit of R, last three bit of G and B to store the encrypted data. In 24-bit bitmap, RGB is represented the color of each pixel and each of them is 8-bit. The leftmost bit of each byte contains the highest value, and the right one contains the lowest value. Therefore, any change in the rightmost byte will only cause a minimal change in a byte value, and the color as well. 2-3-3 method is adopted to replace the pixels as encrypted data. It is used because it is in coordination with the program’s fluency. 2-3-3 is obtained so that 1 pixel will contain 1 byte of encrypted data. For R, the last two bit will be replaced by encrypted data. For G and B, the last 3 bit will be replaced by encrypted data. If the Bitmap size is larger than the encrypted data, random data will be replaced into the remaining pixels.\r 4. Conclusion \r “CryptoDefender” is user-friendly and efficient way to protect important and confidential digital files on most personal computers. This software will help to change the user’s habit in securing their information as to avoid data leakage even when they are accidentally lost.

利用Na2S2O3取代Na2S2O5進行秒錶反應實驗，發現硫代硫酸鈉在酸中的穩定性比焦亞硫酸鈉高，並進一步研究[KIO3]、[Na2S2O3]及[H+]與反應速率(R=－Δ[Na2S2O3]/Δt)之關係，求得反應速率定律式R=[IO3-][S2O32-]2[H+]。另嘗試以光電計時器取代碼錶與眼睛判讀顏色變化的計時方式，結果發現以光電計時器並配合適當反應槽，對反應速率的測量是可行且再現性佳。

本次的研究起因於生活中的小插曲－「果汁不小心滴在相片上，相片產生了變化」。而平時自然課老師不斷的提醒要隨時觀察身邊事物的變化，有興趣就好好的研究，因此我們決定找出到底是果汁中的何種成份使照片產生變化。在研究的過程中，我們從實驗中得到了答案，也發現了新的問題，經過不斷的討論與實驗，我們的主要發現如下：一、相片上繽紛的色彩是由紅、黃、藍三種原色所組成。二、相片上這三原色上色的次序先後是黃 紅 藍。三、水果多為弱酸性（pH=4），然因所含酵素種類不同，對相片所產生的影響也不一樣。四、檸檬酸使相片變色的情形是將相片的三原色直接溶解了。五、將奇異果及鳳梨果汁經高溫加熱後，因酵素受到破壞，對相片產生的影響與檸檬酸對相片產生的變化相同是一樣的。所以我們認為使相片產生劇烈變化的主因是水果中的酵素，而水果中的微酸亦可對相片產生些微的侵蝕效果。但是，研究過程中水果酵素並不易取得，所以我們是以「蛋白質分解酵素」來實驗；如能取得不同水果酵素，相信可進一步加以研究探討。

本實驗使用聚醚亞醯胺溶液製備基本薄膜，由於玻璃態高分子薄膜過於緻密，一直是高分子薄膜在應用上的一大限制，為了在薄膜上製造缺陷，又不會使薄膜之選擇性降低，因此選擇將酸化之奈米碳管(孔徑10~20nm) 加至聚醚亞醯胺薄膜中。本實驗主要為探討添加不同濃度的酸化奈米碳管對聚醚亞醯胺薄膜的滲透率與選擇率的影響，藉由添加0.5 wt%、1 wt%、1.5 wt%、3 wt%、4 wt%等不同濃度的酸化奈米碳管至15 wt% 的聚醚亞醯胺溶液中，並製作薄膜，測試其基本性質與五種氣體(H2、CO2、O2、N2、CH4)的滲透率及不同空氣分子之間的選擇率。我們總共測試了三種薄膜的性質，分別是表面特性、熱穩定性及結晶型與層間距，薄膜的表面性質，能觀察到奈米碳管在薄膜中製造奈米孔隙結構，增加氣體滲透的孔道，能有效增加氣體的滲透率。增加奈米碳管的量，能有效升高第一階段熱裂解的溫度，雖然熱裂解在本實驗中沒有很大的差異，但是還是可以從熱重分析圖中推測不同量的奈米碳管會影響熱穩定性。在X 光繞射實驗中，添加奈米碳管的薄膜與純聚醚亞醯胺薄膜，在結晶相上都屬非結晶型薄膜，添加了奈米碳管的高分子複合薄膜的層間距明顯增大。在氣體滲透實驗中，我們比較了不同氣體或濃度不同的奈米複合薄膜的氣體滲透率，在不同氣體時，氣體的滲透率會隨著奈米碳管濃度增加有明顯的提升，五種氣體滲透率大致依照H2>CO2>O2>N2>CH4 這個趨勢增減。奈米碳管對1.5%增加到3%或4%的奈米複合薄膜滲透率的影響卻減小，由此可以推斷奈米碳管對空氣滲透率並非無限制的增加，在1.5%以後就漸漸趨近最大值。H2為14.89barrer，CO2 為9.51barrer，O2為6.34barrer，N2為6.48barrer， CH4 為3.75barrer 。本研究總共比較了三組氣體的選擇率，分別是CO2/CH4，O2/N2，H2/CH4，分離率最高的是H2/CH4 的，兩分子的粒徑大小差對分離率有極大影響，差愈大，其分離率也愈高。奈米碳管的量改變並不會使薄膜的氣體選擇率明顯增加或減少，但是加入太多奈米碳管其選擇率會變低。在五片薄膜中，1.5%的薄膜有最好的選擇率，奈米碳管的添加量超過1.5%選擇率就會開始下降。綜合滲透率及選擇率可以分析出，添加1.5%奈米碳管的高分子奈米複合薄膜有較高的滲透率，又不會降低選擇率，在利用上比其他濃度的奈米複合薄膜在有害氣體過濾及空氣的分離回收方面產生更好的效果。;This experiment uses Polyetherimide polymers solution to make basic membranes. Because glassy polymer membranes are too dense for gas permeations, it is one of the limitations in their applications. To increase gas permeability and maintain air selectivity, I made some nanogaps on the surface of the membranes by an acidification multi-wall carbon nanotubes (MWNTs, kinetic diameter 10~20nm) in the PEI membranes. We mainly want to find if it has some influence between the consistency of acidification MWNTs and gas permeability or selectivity. We mixed 0.5wt% 、1wt%、1.5wt%、3wt%、4wt% acidification Carbon nanotube in 15wt% PEI solution, made membranes and tested the character, five kinds of gas permeability (H2、CO2、O2、N2、CH4) and the selectivity between different gases. We have tested the three nature of membranes, including surface characteristic, TGA and XRD. We can see some nanogapes made by carbon nanotube in the membranes. It could availably increase gas permeability. Mixing more carbon nanotube in the membranes could increase the temperature of the first heat-decomposition. Though the heat-decomposition in this experiment didn’t change a lot, we could say that different percent nanotube would affect the membranes’ heat-decomposition. By the experiment of XRD, the membranes with carbon nanotube and the pure PEI membranes attach to amorphous membranes. Nanocomposite’s de-spacing is bigger than pure membranes. In the experiment of air permeability, we compared different kinds of gas or different percent carbon nanotube of nanocomposite if they have some change of permeability. The conclusion is that air permeability increase as the quantity of nanotube increase. The five kinds of permeability the direction：H2>CO2>O2>N2>CH4.The influence of permeability will decrease when the quantity of carbon nanotube increase from 1.5% to 3% or 4%. We can get the conclusion that the increment of gas permeability isn’t limitary. It drifts towards maximal about 1.5%. H2 is 14.89barrer. CO2 is 9.51barrer. O2 is 6.34barrer. N2 is 6.48barrer. CH4 is 3.75 barrer.This experiment totally compared three groups of air selectivity. They ’re CO2/CH4, O2/N2 and H2/CH4. The maximum of selectivity is H2/CH4. The difference of kinetic diameter affects air selectivity a lot. The quantity of nanotube doesn’t associate with the air selectivity, but mixing too much nanotube will decrease air selectivity. The 1.5% nanocomposite has the highest selectivity. If the consistency of the membranes is higher than 1.5%, the air selectivity will decrease. Depend on the gas permeability and the air selectivity, the 1.5% nanocomposite has higher permeability and constant air selectivity. That shows the 1.5% nanocomposite has a better effect on air selectivity and recycling.

經由實驗得知，雖然吹電風扇會令人感到涼爽，但實際上卻不會降低周圍空氣溫度。於是想找出可以降低氣溫的電風扇並探討其原理。首先，要了解電風扇造成的空氣流動情形，實驗發現電風扇使得空氣以螺旋方式向內集中吹出。然後利用熱傳導原理，採用導熱效果佳的鋁器，放置於電風扇前方，並裝有小冰塊以增加與空氣接觸面積，以達到較佳的降溫效果。接下來，利用超音波霧化器將不同溫度的水來產生小水霧，並置於電風扇前方，以探討其蒸發對周圍氣體的降溫效果。最後，結合了熱傳導和蒸發吸熱的原理製作一裝置，使得電風扇的降溫效果更加提升了。

本研究主要透過設計模型的模擬實驗進行溫室效應之探討。研究中設計能模擬實驗之模型，並制訂一套測溫實驗方式，以模型內受光照時的升溫情形，以及停止光照後的降溫情形，作為溫室效應之表徵。研究先探討一定空間內，氣體種類及二氧化碳濃度造成的溫室效應；接著比較模型內「地面高度」、「地表材質」及「天氣狀態」下的溫室效應情形；最後探討如何降低模型內的溫室效應。研究發現:1.各氣體的溫室效應表現不同，其中以二氧化碳的影響最大，而且濃度越高，溫室效應越明顯。2.溫室模型內在「地表高」、「石地」與「空氣對流」情形下，受光照後較不易降溫。3. 利用「消耗二氧化碳濃度」及「設計屏障遮蔽紅外線」兩項方式都能有效降低模型內的溫室效應。

開學時分配掃除工作，我們這一組式水族箱清潔隊，負責清潔自然科學教室和一年級教室裏的水族箱。自然科學教室的水族箱經常較乾淨，而一年級教室裏的水族箱就不同了。那裏面養的是金魚，排泄物特別多。一年級的同學又常常把飼料放得太多，魚吃不完的飼料就沈到下面發黴，好可怕。這些沈積物在水中輕飄飄的不好打撈，也撈不乾淨。使得我們要每隔一個月把水族箱內的砂石清洗一次。為了清洗砂石，先把魚用網撈出來寄養在別的水族箱，然後拆下打氣設備、溫度計、自動調溫器，搬出水罩和石頭，才能把砂石倒出來清洗，洗好了再一樣一樣放回去。因為換了水還要放一些海波，再等半小時，才能把魚接回來。這工作又麻煩又怕東西被打壞，真是苦差事。想到平時老師常鼓勵我們研究實驗，何不來研究有沒有較好的方法來維護水族箱的清潔。

蘿蔔糕食用簡便且具有特殊口感，但產品 pH 值低及水活性高，容易腐敗或長黴。現行法定許可之防腐劑用量對蘿蔔糕的保存期限無延長之效果，故市面上只能以低溫包裝儲藏來延長保存期限。因此要達較長保存期限，除了從製程作業衛生控制著手外，運用微生物柵欄技術（Hurdle Technology）如調整 pH 值、Aw 值及添加天然抑菌劑等是必然手段。基於生產成本考量，本研究自製蘿糕並探討酸化與添加天然中藥材萃取液於其性質變化。蘿蔔糕貯存於 4℃及 25℃結果顯示，總生菌數分別在第 7 天及第 4 天得最高量，故未添加基質前低溫貯存優於高溫狀態。四種酸化模式試驗結果顯示，以檸檬酸效果最佳。不同中藥萃取液加入蘿蔔糕後總生菌皆較未加入者低，其中以白芍效果最優。

從雙眼立體視覺檢查圖操作中，將發現問題分為影像位置、大小及顏色兩類。在影像位置、大小中，邊緣差異量對影像位置、大小皆有影響，眼睛到螢幕距離值會影響影像位置，但影像大小不變。物體大小不會影響影像位置，但影像大小會有等比率縮小。結合GeoGebra所建立操作模型，經由兩個面向的實測值及理論值比較，發現使用操作模型來預測立體影像的位置及大小是可行的。色光通過濾鏡時，照度值具有獨立性和累加性的趨勢。從彩虹顏色和3D影像顏色比較，發現3D顏色合成的模式不完全是加光原則或減光原則。運用研究成果解釋問題，都可以充分說明及回答，表示目前實驗成果能說明3D立體影像的形成原理。掌握3D立體影像的形成原理即可製作出3D立體特效。

This research is mainly in observation with Caenorhabditis elegans ’s genetic mutation caused via nervous system abnormal character. In the study, I the sample have been cultivated purified and add some chemical material EMS to speed up C.elegans mutation. Then based on the character to further analysis what causeof gene deal with mutation and observe the effects in heredity. The research has two stages, on the first stage of study the mainly target is to both search and purify the mutation of C.elegans. The second stage is based on the exploration of mutation’s searching and purifying. Because the certain mutation bodies aren’t easy to find out, the project is still on progress at the beginning of second stage, and we conclude some heredity special cases in preliminary of study. 這個實驗主要是觀察並針對線蟲因為基因的突變所產生的神經系統異常的變異性狀，在實驗中我先將樣品線蟲培養並純化至一定數量，並加入適當藥劑EMS造成其突變，經篩選並分析此性狀，進而找出造成其突變之基因，以及觀察此性狀對遺傳表現所造成的影響。該計畫分成兩階段，第一階段的實驗重點是在突變株的搜尋以及純化上，第二階段則是在突變基因的探討上，由於特定突變株的搜尋並非容易，所以目前計畫只進展至第二階段的遺傳實驗初期，對於其遺傳特徵與突變形式上已有了初步的分析，但尚未定位出該基因的位置。

在一本「難題遊戲」裏，找到一種叫做 NIM 的遊戲，其中有些必勝的規則，讓我們產生很大的興趣，並引發我們研究其理論基礎，於是我們請教數學老師，老師給我們一本數學傳播季刊，並說明NIM遊戲規則及必勝方法的理論是利用二進位法的簡單理論稍加應用而已，我們覺得很神奇，這麼簡單的理論竟能發揮這麼大的功用，於是我們想必然還有其他的功用，平常愛好象棋的我，就開始想將這個理論應用在象棋的殘局上，因此我們就研究出一點小小的心得，提供參考。

我們在校園內設置兩樣區，從2007 年4 月至2007年6月，共調查9株姑婆芋，93朵佛焰花，以瞭解姑婆芋生活史、傳粉昆蟲生活史及兩者之間的互動關係。 姑婆芋在11 月至7 月花期時會不斷產生佛焰花苞，剛冒出的花苞經過1到3天後，雌蕊漸成熟，佛焰苞會漸漸展開，開始產熱及一些特殊氣味，吸引果蠅科未知種的蠅類傳粉。當胚株受粉後，佛焰苞頸部會閉合，迫使傳粉昆蟲會往上爬到雄蕊部位攜帶花粉，飛至另一株姑婆芋雌蕊上傳粉，因此姑婆芋與傳粉昆蟲之間具有互利共生的關係。佛焰花序主要產生氣味的部位是在附屬物及雄部，而佛焰苞則可以幫助吸引更多傳粉昆蟲。佛焰花序的附屬物及雄部相對溫度較高，可能具有產熱以吸引傳粉昆蟲的功能。 ;Our study started from April, 2007 to June, 2007. We observed a total of 9 Alocasia odora and 93 spathes to help understand the life cycle of these understory clonal herbs, its pollinators, and the relationship between them. Alocasia odora produces spathes continuously during inflorescence. In the female phase, the pistillate part of the inflorescence ripens and an opening appears at the spathe, heat and a special odor is produced to attract pollinators of Drosophilidae. When the ovule is pollinated, the male phase begins and the opening encloses, which forces the pollinators upwards to the staminate part to carry its pollens, and then fly to an other Alocasia odora, Heat and the special odor are produced by the appendix and the staminate part of the inflorescence, and the spathe can increase the number of pollinators attracted. The relationship of mutualism between these two species contribute to the study of coevolution.