全國中小學科展

未代表出國作品

千金難買「蚤」知道

我們的研究重心是設計簡便的裝置來檢測生活周邊的用水 · 利用生物對於環境污染的生理特徵、活動力、忍受極限 … 等變化,作觀察、實驗之後,將紀錄結果分析、做成表格,進而形成明確、簡易的指標,以供給一般人更容易的了解用水的品質。本實驗不必使用昂貴的儀器來檢測河水與用水,成本低廉的水生生物為本實驗的最佳選擇 · 可於任何地點完成,作為大及化的檢測方法,本實驗參考水樣急性檢測方法一水蚤靜水式,以水蚤在不同眾屬離子、酸鹼值溶液中的實驗結果,用以做為分析水質的標準,佐證我們生活圈附近的水質現況。Our point of study is design the simple and convenient device to measure the water with peripheral life. Utilize the living beings to the physiological characteristic , energy of the environmental pollution, stand limit. Wait for and change, after making observation , experiment. noting down the result will be analysed , make into the form , and then form the clear , simple and easy index , in order to supply common people with the quality of easier understanding water. This experiment needn’t use the expensive instrument to measure river and water . the best choice of the experiment that the cost is based on living beings cheap aquatically. Can finish in any place , as the popular detection method. This experiment consults the acute detection method of water sample — Water flea’s quiet ability of swimming. with the experimental result in different metal and ion sour soda value solution of water flea, use the standard taking making as water quality of analysis, prove the present situation of water quality of adjacent place of our life range.

水滴中的靜電現象

在日常生活中,靜電無所不在,但是在一般的情況下,我們所能觀察到的靜電現象,卻是少之又少。偶然經過冷氣機,冷氣機的水滴滴答答的滴出,吵雜的水聲,這些水滴是否能被利用?又將應用在哪一方面?引發我們的興趣,偶然間發現的凱氏滴水器,也許能解答我們的疑惑,進而促成此次的科展研究。

同步現象的研究

In our daily life, objects and the contacts between objects they will have mutually affect each other, some initially chaotic systems after a sufficient amount of time will mutually correct each other, and finally achieve synchronization (example: the speed of bird and fish migration, market prices, infantry…), although some are unable to achieve this. We will illustrate and explain the synchronization system, its process and discover the conditions for synchronization. Using linking concepts, we will integrate the coupled map lattices with global coupling and coupled map lattices with intermediate-range models into a synchronization mode in order to simulate a synchronization system. We first used a small system of n≦50 to obtain results that will demonstrate the linking concepts: 1. The more chaotic a system, a longer period of time is required for synchronization. 2. An increase in the number of individual objects requires an increase in the range of concepts and the amount of time in order to achieve an in depth synchronization. 3. Initial concept values which randomly effect synchronization critical point conditions are not obvious in a mathematically incorrect graph. In a closer look, when we increased the synchronization to n≦400 and the number of times to t-->100,000 we discovered:1. Using the function G(x) we hoped the results from the graph after apply the function and correction able to overlap and test with “Scaling and Universality in Transition to Synchronous Chaos with Local-Global Interactions”, but the part which overlapped the measurements was not identical: 2. We can use the significance of the critical point and the Interactive Process to find the approximate value of the critical value up to 4 digits following the decimal point. 3. We can also use the approximate value to find out the range for the simultaneous conditions and the various points on the system itself, as well as obtain a negative correlation between them, and then it can be similarly expressed with using a curve. A computer can calculate values with this kind of enumerating method, even without any special resolution capabilities to quickly obtain large amounts of approximate values of simultaneous conditions, this is especially true when calculating unfamiliar systems. 日常生活中,物件與物件的接觸,彼此會互相影響,有些原本雜亂的系統再經過充裕時間的互相修正後,最後竟能達成同步(例如:鳥群、魚群遷徙的速度、市場價格、行軍步伐…),有些則不能。因此,我們試著利用描述同步系統的模型,觀察系統同步的過程,並且找出同步的條件。由連結的觀點,我們將Coupled map lattices with global coupling 和Coupled map lattices with intermediate-range 模型的優點整合成Synchronization mode 去模擬同步系統。我們先用小系統(n≦50)得到能印證連結觀點的結果:(一)、系統越雜亂,就需要稍長的時間同步;(二)、個體數越多時,各點需要更大範圍的點數去影響於每單位時間內以及更深的影響才能同步;(三)、起始值隨機影響同步臨界條件並不明顯,在誤差範圍內。更進一步,我們將系統推向n≦400 點,t→100,000 次,我們發現:(一)、在”G(x)”我們希望能將圖形經過函數修正之後能疊和,驗證”Scaling and Universality In Transition to Synchronous Chaos with Local-Global Interactions ”中的結果,但只有部分疊和,尺度不相同;(二)、可以直接利用臨界點的意義用十分逼近法求出臨界值的近似值到小數後四位;(三)、我們用近似值也能發現同步條件與系統各點本身可跳躍的數值範圍是負相關,可用曲線去近似。這種窮舉方式,交由電腦運算,不需要特別的解析能力就能夠快速且大量求得同步條件的近似值,尤其在運算不熟悉的系統時。

利用農業廢棄物進行連續產氫之研究

本研究嘗試以沒有經濟價值之農業廢棄物,經由化學反應轉換為氫能源,並藉由化工程序來達到連續製程。 我們用爛掉的香蕉為基質,從校園及生活周遭的環境尋找產氫微生物,發現可生產氫氣之微生物隨處可得。在培養溫度35℃下,選擇不同濃度之基質,發現基質濃度與產氫量成正比,且產氫微生物適合在弱酸(約pH=5.5)環境中生長。 以此條件進行連續式反應,當反應槽體積為700ml時,經過26小時後,槽內基質消耗殆盡,此時開始連續進料,當進料流速為138毫升/小時,則水力停留時間為11.67小時,產氫量為5.43升/天,最後連接氫燃料電池,可得到連續產生的電能。另外本實驗也以爛木瓜進行批次反應,同樣也能獲得氫氣。 經由實驗結果可得知,利用農業廢棄物為基質,可運用化工程序發展為連續產氫製程,且應用於實務上,能提升全球環保的概念,我們期待能開創一個能取代「碳經濟」的「氫經濟」。

摺紙數列-相關問題探討

1. 遊戲規則:將1~ 2m × 2n的連續正整數,由上而下、由左而右依序填入 2m × 2n的方格內。操作規則允許將2m × 2n做往右或往左或往上或往下的完全對摺,直到操作至所有單位方格均疊成一行,此同時有數字也由上而下形成一數列。2. 本研究即是探討操作完成的數列之數量與數字間的關連性。3. 我們發現:(1) 數列之數量與巴斯卡三角形有關。(2) 形成的數列必符合內文的 [ R(L) 性質]、 [ D(U) 性質]、[ R&D 性質]、[D&R 性質]。 1. Rules of thegame: Fill in order the continuous positive integers 1~ 2m × 2n, from top to bottom and from left to right in the 2m × 2n check. The operational rule allows a complete fold of 2m × 2n either rightward or leftward, or upward or downward, until all the check units pile up in a line. At the same time, all the integers form a series from top to bottom. 2. This study explores the relationship between the number of the series and the integers after the operation. 3. Our findings are: (1) The number of the series is related to Pascal triangles. (2) The series formed meet the properties mentioned in the study: [the property of R(L)], [the property of D(U)], [the property of R & D], and [the property of D & R].

醇醇躍動的振盪反應

震盪反應有許多種反應類型,至今已被完整探討,但對於震盪反應之催化系統,卻鮮少有文獻提及,本研究小組偶然發現,醇類對於震盪反應具有明顯的催化作用,本文嘗試探討各級簡單的醇類對於震盪反應影響,並透過活化能的改變了解醇類在催化過程中所扮演的角色。The many types of BZ oscillation reaction have already been thoroughly discussed. However, little mention has been made in literature regarding the catalysis system of the reaction. The researchers have accidentally found that alcohols exert an obvious effect on the oscillation reaction. The study attempts to discuss the different influences that various kinds of alcohols have on the oscillation reaction and to understand the role alcohols play in the catalytic process through the change of activation energy.

竹筍老化之謎

本研究是在探討收割後的綠竹筍(Bambusa oldhamii, green bamboo)的老化(aging)現象。一般人說的竹筍老了,通常是指竹筍的質地變硬,口感變差,此即是竹筍硬化的現象,而硬化的主因可能是竹筍受到逆境 (stress) 的刺激後,影響了基因表現的形態,導致纖維素和木質素的增加。竹筍採收後以不同方式處理,觀察切面的變化後發現,以0.2 M蔗糖水浸泡48小時後的竹筍,其切面比浸泡於水中或置於空氣中的竹筍切面較白,筍尖較綠且沒有枯萎的情況。不管是浸泡糖水、水或置於空氣中,都無法防止竹筍的硬化,但浸水和糖水可延緩竹筍硬化的情形,可見要防止竹筍老化,基本上要從抑制合成纖維素與木質素的酵素來著手。抽取竹筍切面處組織中的DNA並以DNA電泳分析之後發現,竹筍的DNA有被降解成小片段的現象,其大小差不多是180 bp的倍數,可見竹筍遇到逆境時也可能會有類似PCD (programmed cell death, 細胞程序性死亡) 的現象。抽取不同處理竹筍的蛋白質進行2D電泳,比較電泳結果發現,三種處理的竹筍的共同點在於減少的蛋白質幾乎都分布在等電點較低的部分。增加的蛋白質大多數分布在等電點較高的區域,這些增加的蛋白質可能和竹筍老現象與PCD有關。本研究還有兩個方向可以繼續延伸研究,第一個是將2D電泳上有明顯差異的蛋白質色點挖出,進行蛋白質定序,再從資料庫中比對,推測可能是何種蛋白質。第二個是研究抑制竹筍合成纖維素和木質素的?的方法,保持竹筍的口感,使竹筍能成為一種能外銷的食品。 The purpose of this study is to investigate and analyze the aging of the harvested green bamboo shoots. The research focused on how to prevent the aging of bamboo shoots and why green bamboo shoots become aging. The term “aging” means that the taste of bamboo shoots becomes hardness post harvest. At first, we tried to find out an anti-aging method, which is not only to keep the green bamboo shoots fresh, but also delicious. The method was to soak bamboo shoots in 0.2 M sucrose, in the water or without any treatment. After 48 hours, the cutting surfaces of bamboo shoots treated with sucrose were whiter, and their outer sheaths were greener than those of shoots soaked in the water or without treatment. The results showed that none of them can stop hardness. But the aging of sucrose- or water-treated shoots was retarded. The results suggest that inhibition of the enzyme activities involving cellulose and lignin synthesis may be required to prevent the aging of bamboo shoot post harvest. To get insight into the reason why bamboo shoots become hardness, the differences of protein patterns and DNA patterns between aging and fresh green bamboo shoots were analyzed and compared. The DNA from the bamboo tissues near cutting surface was isolated and analyzed by agarose gel electrophoresis. The results showed that DNA from shoots was partially degraded. The fragments appear as a ladder of DNA with sizes in multiples of approximately 180 bp. The presence of the olignucleosome-size DNA fragments suggest that the cells may undergo programmed cell death (PCD). The degradation of DNA was not observed in shoots treated with sucrose. By comparing the results of 2-D gel electrophoresis, it was found that some proteins with low pI values decreased or disappeared post harvest, while proteins with increased levels were detected in the high pI area. These changes in these proteins may result in the aging of the bamboo shoots. Prevention of the aging of green bamboo shoots is not easy. However, I found out from this study that soaking the bamboo shoots in the 0.2 M sucrose was a possible way to preserve them. The cutting surface of sucrose-treated shoots remained white, and the sheaths of the shoots was greener than those treated with other methods. Moreover, the degradation of DNA was not observed. However, it still cannot completely stop the aging of bamboo shoots. Reducing the enzyme activities involving cellulose and lignin synthesis may be a direct way to prevent the aging of bamboo shoots. It seems like there are many things to discover in the future.

震到電離層

本研究探討大地震前電子濃度的減少與地震之間的關係,以1999年921集集及日本地區2008/06/13規模7.2兩個地震個案進行檢驗。分別以疊圖的方式累積24小時電離層全電子含量(TEC),採前15天TEC中位數當作背景參考值,探討電子濃度的增加或減少,且以標準差σ檢驗確認其異常現象的程度。此外為分析太陽活動性對電離層TEC之影響,各選取相同磁緯、相同地方時的一點與F10.7指數相似時期做驗證,結果顯示電子濃度值異常減少可排除太陽活動的影響,而極有可能來自於大地震。

「洪」色警戒

颱風來襲常常帶來驚人雨量,容易造成淹水、洪水等災情,民國98年芭瑪風災過後,我們實地考察蘭陽溪流域,流域內發生淹水或其他災情的地區主要有兩處,分別為上游的寒溪地區以及下游的五結地區。五結地區因為地勢較低而造成淹水,位在上游的寒溪地區卻也災情嚴重,所以選定寒溪為研究範圍。我們多次前往研究地區,量取河堤高、河道寬、經緯度…等數據,利用Google Earth影像輔助,讀取該地高度值。利用這些數據推算出河道容量、排洪能力、集水區大小,並討論在某定量雨量下,該地區的水位高度以及流速等數據。經過計算,在芭瑪颱風最大時雨量110mm/hr的情形下,寒溪地區的河道應該可以承受這些水量,發生潰堤的主因不是溢洪造成,而是水流的流速沖刷堤岸所導致。

整合型水族養殖系統研究與開發

本研究主要的目的是在開發二氧化碳製造、過濾與循環的整合型水族養殖系統。二氧化碳的產製是以基於發酵原理,並搭配具有純化二氧化碳作用的水濾裝置,發酵環境溫度以水族箱內的水來維持,循環過程中並搭配外部過濾器,所有容器均由保特瓶改裝完成,整合成一套價廉、環保且具有高效率的水族養殖系統。由實驗結果可得知,二砂糖發酵對於二氧化碳產生率而言,其最佳發酵環境溫度範圍25℃~35℃,一般水族箱的水溫即可保持在此一溫度範圍。過濾系統則使用光電比色計與一般市售過濾器相比較,亦有令人滿意的效果。本實驗除了研究以二砂糖發酵之外,還希望更進一步地朝向廚餘減量方面開發其他發酵材料,希望能為環保盡一份心力。;The purpose of this study is to develop an integrated system of aquatic breeding with the functions of producing carbon dioxide, filtering and circulating, where carbon dioxide is produced based on fermentative theorem and purified by the water filtering; the environmental temperature of fermentation is maintained by the water in the aquarium and circulating is through an external filter. All the containers are made of PET bottles and thus integrated a cheap, environmentally friendly and high efficient system of aquatic breeding. According to the experimental result, for the producing rate of carbon dioxide, the best fermentative temperature of NO.2 granulated sugar is 25℃~35℃. With a photocell colorimeter to compare the function of the self-made filter with that of the filters on the market, one can find it’s comparable. In addition to the fermentation of NO.2 granulated sugar, the study is also expected to develop other fermentative materials to reduce kitchen waste for environmental protection.