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趕走自由基,健康有生機?抗氧化就從蔬菜湯、糙米茶做起

本研究以 DPPH 自由基清除率、TEAC 總抗氧化力及抑制紅血球溶血等試驗模式,探討蔬菜湯與糙米茶水萃取物之抗氧化性表現,並評估該兩項水萃取物經等比例 (1:1) 混合後,其抗氧化性是否有相乘或相減之效果。結果顯示,蔬菜湯及糙米茶水萃取物其清除 DPPH 自由基能力以糙米茶較佳,而自製與市售蔬菜湯水萃物之 DPPH 清除率並無明顯差異。此外,比較蔬菜湯之個別組成 (紅蘿蔔、白蘿蔔、白蘿蔔葉、牛蒡、香菇),其中以白蘿蔔葉之 DPPH清除率最高 (74%) 。在總抗氧化力表現方面,糙米茶之 TEAC 值高於蔬菜湯,自製蔬菜湯優於市售樣品,蔬菜湯之個別組成以白蘿蔔葉最佳 (0.089±0.001) 。蔬菜湯與糙米茶水萃取物抑制 AAPH 誘導人類紅血球細胞溶血之系統,自製蔬菜湯可抑制 85%紅血球溶血,為所有樣品中最高者。此外,本研究亦針對蔬菜湯與糙米茶水萃取物中可能之抗氧化成分進行分析,其中以白蘿蔔葉之總多酚化合物 (71.1 mg/g) 及類黃酮化合物 (19.3 mg/g) 含量最高,可解釋其抗氧化力最佳的原因。

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數學與遊戲

張鎮華教授在文章[4]中介紹威氏遊戲(Wythott’s Game):文章中提到安全殘局所成的集合Sw為 {(1,2),(3,5),(4,7),(6,10),(8,13),(9,15),(11,18),(12,20),(14,23),(16,26),…}。將這個集合中元素第一個座標的數所成的集合命名為A,而將第二個座標的數所成的集合命名為B,設其為A={a1, a2, a3,…}, B={b1, b2, b3, …}, 可以發現集合A和B滿足性質(1) A∪B=N ; 性質(2) A∩B=ψ;性質(3)數列是等差數列 ( bk- ak, k=1, 2, 3,…)。在這個研究計劃中,可以分成數學與遊戲兩部份:(一)數學部份:我們從不同的角度來介紹下列四個集合,並證明它們都相等。1.令{αs |集合S(αs )T(αs )= N?S(α)={[k(αs + s)] | k =1,2,3,…}滿足性質(1), (2), (3)},其中S(αs)={[kαs ] | k =1,2,3,…},T(αs ) = N?S(α)={[k(αs + s)] | k =1,2,3,…}。2.{αs | ([kαs ] ?[(k ?1)αs ] = 2 k=1+ (s ?1)n + [nα]), s=1,2,3,…}。3.{αs | 1/αs +1/(αs + s) = 1, s = 1,2,3,...}。4.{(2- s+√S2+ 4) / 2 | s = 1,2,3,...}。(二)遊戲部份:研究變型(第二型)威氏遊戲和推廣的三排威氏遊戲,利用我們學會的方法來找及證明這兩個遊戲的所有有利位置。下列三個集合都相等,同時它們都和上面的集合有密切的關係5.{X | X ?1/ X = [X ]}。6.{Xs | Xs- 1/Xs= s, s= 1,2,3,...}。7.{(s+√s2+ 4) / 2 | s = 1,2,3,...}。

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氣語非凡—植物的攻防策略

我們過去發現植物氣味會抑制他種植物發芽,在這次實驗我們利用顯微鏡與自動觀察箱探討植物間氣體的對話,並記錄氣味對小麥(單子葉植物)、綠豆(雙子葉植物)莖的長度,莖、葉重量,向光性及氣孔大小的影響。我們發現九層塔的氣味不影響綠豆生長和莖、葉重量,只輕微抑制小麥生長和植株的重量。而檸檬桉氣味促進綠豆莖的生長,卻減少葉重,並能抑制小麥的生長。野薄荷與樟葉的氣味則對這兩種植物生長與重量都有顯著抑制甚至完全不發芽。向光性方面,野薄荷氣味明顯抑制綠豆向光。小麥氣孔狹長不易觀察其開合,綠豆氣孔開口卻明顯受氣味影響而變小,可能是植物用來對抗外來氣體的招數吧!真奇妙,利用散發氣味,植物間正進行著一種無形的攻防戰呢!

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「震不震」的住

本研究是探討與地震相關的阻尼器現象,並運用簡單的器材來設計簡易的地震模擬振動平台來測試阻尼器的效用。實驗是用台車、彈簧、樂高積木板來建構地震模擬振動平台,樂高積木來建構建築物模型,砝碼來模擬阻尼器,結果如下:一、利用彈簧拉力,讓地震模擬振動平台能水平來回擺動,模擬水平移動的地震。二、懸掛式砝碼(似擺錘)能減少建築物搖晃情形,且砝碼移動方向會因慣性而與建築物移動方向相反。在改變砝碼重量的實驗中可以發現砝碼越重,越能減少建築物搖晃的情形。三、固定砝碼重量,改變砝碼位置的實驗中發現,砝碼擺放位置越高,越能減少建築物搖晃的情形。實驗結果可用以解釋台北101大樓中重達680公噸大圓球阻尼器設置於88-92樓的原因。

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節能省碳反射─反射式紅外光液晶智能窗之研發

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太陽短期活動對地球磁場與大氣溫度異常的影響

This study analyzed how short-term solar activities interact with the earth atmosphere, by using two statistic methods: Diffusion Entropy Analysis (DEA), and Standard Deviation Analysis (SDA). Since solar activities influence the Earth atmosphere in its radiating heat and magnetic field, we use DEA and SDA to calculate the exponents, H and δ, of the scaling law in three time series: “the intensity of solar flare” (representing by SOLAR H-alpha flare index), “magnetic anomaly of magnetosphere” and “sea surface temperature anomaly”. The values of H and δ show the time memory and correlative relationship between the event and next event happening in time series. When H = δ = 0.5, events occur in random. When 0.5

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Effects of Macromolecular Crowding on Model in vitro Antigen-Antibody Reactions

Many biological processes in the human body take place in intracellular environments under crowded conditions. This means that such cellular activities occur in the presence of inert macromolecules. These macromolecules are thought to have large effects on reaction rates and equilibria. However, under conventional conditions, these same processes are studied in vitro under uncrowded conditions in dilute buffers and therefore not reflective of physiological conditions. Hence, this project aims to study the effect of macromolecular crowding on antigen-antibody reactions in an attempt to mimic intracellular environments. It also aims to highlight the importance of introducing crowders as a factor of study in conventional in vitro experiments involving cellular reactions. The model reaction investigated involves human collagen type 1 on skin samples and specific antibodies against these antigens. Inert macromolecules of defined hydrodynamic radius and charge were added into the reaction media while quantitative tests are conducted to determine the effect of crowding on the rate and extent of reaction. The macromolecular crowders used were Dextran Sulphate, Ficol170, Ficol1400 and Polyvinylpyrrolidone360. Results were than analysed with the Metamorph 7 imaging system to determine signal strength under crowded and non-crowded conditions. At high primary antibody dilutions, skin samples incubated with a primary antibody solution crowded with a combination of inert macromolecules showed improve signal strength. This could be because crowding tends to shift reaction equilibria such as to minimise the amount of excluded volume, leading to association of the antigen and its specific antibody. This is known as the excluded volume effect. In addition, crowding the primary antibody solution helped increase the rate of reaction. The results also suggest that the addition of crowders may reduce the amount of antibodies needed per sample and decrease the necessary incubation time. Therefore, antigen-antibody reactions can be done more cost-effectively, However, the presence of charged macromolecules such as Dextran Sulphate has an inhibitory effect. Further work is also needed to establish whether macromolecular crowding enhances specificity and thereby reduce autoflourescence of the skin sample.

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「堆」出生機-落葉變黃金

落葉幾乎是大部分學校都難以處理的問題,馬祖地區除了落葉外,還有酒廠製酒的廢料-高粱酒粕與廚餘,在強調環保的21世紀,如果能將垃圾變成有價值的黃金,是每個人夢寐以求的努力方向,運用科學實驗方法找出製作落葉堆肥的便利方法,讓地球環境更美好。

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看林葉繽紛-探索草本、木本植物氣孔與蒸散作用之研究

為進一步探討草本、木本植物氣孔與蒸散作用的差異,我們蒐集資料,且設計實驗加以比較,結果發現草本、木本植物之上下表皮氣孔分佈之數量、大小、型態等,因種類不同而異外,氣孔皆散佈於葉的上或下表皮,呈現非均等分佈,而葉脈處無氣孔,且氣孔顯著小於表皮細胞;草本植物於上表皮偶而可發現氣孔,但分佈數量較下表皮少,且氣孔不一定比木本植物小;木本植物之氣孔僅見於下表皮且會陷到下表皮內,其單位面積分佈密度較草本植物多。葉片越成熟其氣孔分佈數量越多,但老化的葉子則較少;水分蒸散主要由葉的下表皮散失,而環境因子如光度、溫度(含日照時段)、空氣移動速度等對植物蒸散速率皆成正影響;不同植物對色光之反應則各有不同偏好。

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門神保全機器人(Door Angle Robot)

The larceny is always annoys our family and our society. They usually steal on the day when people working in the office or studding in the school. They always wait for people leave the house, and try the bell until them confirm the owner of the house leaved and nobody at home. Then they will open the door or break the lock of door. So we can find that if any body home or the lock is very hoard to open or to break. Then the thief is always choice to give up. That prove if we con let the thief think the house is some body home. Then it can to avoid larceny. This project is about how to design a system which is used AI technology to be a robot that is like a human. That robot can talk to the thief and can be a special lock when the thieves try to break the lock of door. The goal of this project is to design a robot that will be a door angel. It will let thief thinks that is some people always in the house. So they can not to steal in this house. We use the AI speech recognition & house environment control I/O system to be a robot which is setup in the door. It is like an angel to protect our home and family. And can stop the larceny. 「住宅竊盜犯罪」一直持續困擾著人類社會,住宅竊案最常發生於大白天,小偷常趁著家中成員上班、上學等時機,稍加觀察,再加以測試(按門鈴) ,確定家中無人,下手破壞鎖具侵入搜括;小偷只要遇到非常難開的鎖或認為有人在家就不會進一步的行竊。所以這證明只要讓小偷認為家裡有人,就能防止竊案的發生,而我們的研究目的就是如何在小偷還在徘徊尋找目標時,就要讓他感到這一家不能偷,如何讓他感覺家裡有人,進而打消入侵行竊的意念。我們希望能設計一套系統,利用AI人工智慧語音辨識及家庭環境控制,來建立一個充滿智慧的門神機器人,來事先嚇阻小偷的行動,就像門神一樣,可以預防竊案的發生,並整合大門門鎖內鎖與家電,形成智慧型的門神機器人,來保佑我們的家庭,也讓竊盜率降低,作為竊盜犯罪防治的利器。

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神奇出奇蛋變棉花了!

帶著興奮的心情上分組活動課,因為老師要教我們做蛋糕,首先老師把蛋白、蛋黃分家,接著拿打蛋器打蛋白,幾分鐘過去了,同學們驚叫著:「好神奇呦!」蛋白有了變化,「變得好像棉花耶!」同學們七嘴八舌說著,老師笑著問我們想不想知道原因?同學們都說想,老師神秘的說,改天帶我們一起探討這神奇的「出奇蛋」,好奇怪呦!這麼小的個蛋,居然也能變化冬端,實在不可思議。

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火龍吸水、柚造奇蹟 ̶ 探討果皮製成可生物降解的吸水材

本研究利用火龍果皮與柚子皮經交聯反應後,成功製成可生物降解的吸水材,進而應用在生活中的吸水杯墊與吸水土,可提供土壤保濕性與營養量。研究發現:(1)果皮種類效應:①飽和吸水量:火龍果>柚子皮。②吸水速率:火龍果皮>柚子皮。③最大吸水倍率達自身重量2.3倍。④果皮顆粒效應:顆粒愈大,孔隙率愈高,則吸水率愈高。⑤纖維效應:添加衛生紙5g最大飽和吸水量達145.5克。⑥果膠效應: 添加柚子果膠5克,增加17.3%耐壓性及23.4%彈性。⑦盆栽保水性:添加吸水材2片,濕度半衰期天數達 6天,每週植物生長高度2.8公分。⑧單片吸水材發酵後會產生氨氮濃度約2-3 mg/kg,有機質約0.9-1.2%。環保吸水材不只豐富農業廢棄物的應用性,更增加對地球友善的價值性。

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