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一般人多將水果去皮後食用並丟棄,而傳統上含糖量多的水果也是釀酒的主要原料,因此我們嘗試將果皮等食物殘渣或廚餘加以利用,進行酒精發酵。 實驗中我們主要探討廚餘發酵時糖度與pH值的變化,以及將發酵液蒸餾製成酒精之可能性。從實驗得知果皮、果肉、白飯及麵包等在發酵過程中糖度及pH值有下降的趨勢。各種發酵液經蒸餾後所測得酒精度以麵包最高,達10%;白飯為6%;果肉、草莓為4%。而果皮發酵液蒸餾後的酒精度,則以鳯梨皮、西瓜皮及甘蔗皮酒精度為3%較高。若改變發酵溫度及酵母量可提高酒精度,鳳梨在35℃、3%酵母量時達15%;麵包則在25℃、1%酵母量時,達17%。我們發現雖蒸餾出酒精度僅在4~10%,若能二次蒸餾使酒精度達到75%,便可作為藥用酒精,或20%~40%可作為食用酒精,未來潛力無窮。
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廣鹽性吳郭魚氯離子調節機制- - - NKCC在氯細胞中扮演之角色
本實驗中我們利用廣鹽性吳郭魚進行氯離子調節機制的研究,探討廣鹽性吳郭魚如何能在不同環境中維持體內氯離子恆定,進而適應生存環境。我門想要探討:『是否NKCC 這種蛋白質在淡水吳郭魚MR 細胞中扮演吸收 Cl- 的角色? 如果是,吳郭魚又如何藉NKCC 的調節適應環境中 Cl- 的變化呢?』我們利用細胞免疫螢光染色法、西方墨點法和共軛焦顯微鏡觀察分析NKCC 在不同 Cl- 濃度人工淡水馴養的吳郭魚MR 細胞上的表現量,結果發現 NKCC 分布於頂端細胞膜(又稱為細胞開口),及其附近的細胞質內;環境中 Na+ 濃度的差異對NKCC 在MR 細胞上的表現影響不大,但低 Cl- 環境馴養的吳郭魚,NKCC 表現量都高出其他組很多。顯示NKCC 參與了氯吸收的機制。另一個實驗中,我們將吳郭魚由淡水中轉移至海水以分析它們在適應海水的過程中NKCC 的表現變化。結果發現在馴養初期(16 小時內),圓點狀NKCC 仍然可以在MR 細胞的開口附近觀察到,但到了24 小時後,NKCC 在開口的表現就明顯減少甚至消失,取而代之的是轉移到底側邊細胞膜上的NKCC。此實驗證實了NKCC 這一個與Cl-運送相關的蛋白質,在廣鹽性吳郭魚氯離子調節中扮演了很重要的角色。
Euryhaline tilapia (Oreochromis mossambicus) is capable of maintaining internal ion constant ineither hypertonic or hypotonic environments (fresh water or seawater).MR cells in the gills of tilapia play critical role in absorbing Cl- from fresh water or pumping redundant Cl- from body fluid into seawater. Chloride transporter (NKCC) which distributed in basolateral membrane of MR cells is involved in Cl- secretion of seawater teleost. However, the mechanism of Cl- absorption in fresh water MR cells is still unclear. Whether NKCC is also involved in Cl- absorption and how do tilapia regulate Cl- absorption are the questions this study aim to answer. By using immunofluorescent staining, western blot, and confocal microscopy, the distribution and expression level of NKCC in fresh water MR cells were examined. We found that NKCC is distributed on the apical membrane of freshwater MR cells where is known to be the site for active Cl- absorption of MR cells. We compared the expression level of NKCC in MR cells from tilapia acclimated in high, normal, and low Cl- artificial water for 7 days. The results showed that NKCC is induced by ambient low Cl- , and in contrast suppressed by high Cl- water, indicating NKCC might be involved in Cl- absorption of freshwater MR cells and up-or down-regulated to maintain Cl- uptake constant. In addition, we also examine the expression pattern of NKCC in MR cells from tilapia transferred from fresh water to seawater. Confocal images show that apical expressed NKCC disappear gradually within 24h seawater acclimation and is substituted by basolateral expressed NKCC. This study provides a novel regulatory mechanism of NKCC in Cl- transporter of MR cells.
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本實驗利用喇叭、薄膜電極、波型產生器、鎖相放大器、及750 介面卡組合一套系統,此系統可使偵測精密度大幅提升(±4*10-5cm),使得水槽及地表模型尺度變小(40*22*35cm),因此可節省實驗的成本與時間我們在坡度實驗中,發現坡度在3 度左右,淺化係數都超過3. 對照台灣沿岸發生海嘯的歷史記載,確實在台灣東北角及西南沿岸等坡度為三度之地區都發生較明顯的海嘯危害. 反之,坡度在四度以上的東岸其海嘯波高都非常低.最後再藉著硬體系統及電腦2D 動畫模擬的整合,使我們可方便掌握波浪在不同坡度及位置,其波長及波高變化比,如此有助於預估及說明海嘯隨地形變化的狀況.By using the horn, membranous electrodes, function generator, phase-locked amplifier, and Science Workshop 750, we plan to assemble a tsunami simulation system in which the precision can be getting increased (±4*10-5cm) .Because of the improvement of its precision, the size of the tank and of the surface models will become smaller .As a result, the money and time spent on the experiment will be spare. When experimenting on the influence of inclination of the landforms, we observed that when the inclination reaches about 3 degrees, the shoaling coefficient exceeded 3 .The result of our experiment can provide an explanation to the tsunami on the northeast and southwest coast of Taiwan .According to the historical records, the disastrous tsunami happens frequently on the northeast and southwest coast of Taiwan where its inclination is also about 3 degrees as well .On the other hand, on the eastern coast, the wave height is lower and its inclination exceeds 4 degrees .Apparently, our experimenting result is correspond to the natural phenomena in Taiwan’s coast . Besides, with the help of hardware system and computer 2D animation simulation, we can easily measure the wavelength and wave height scale of the wave in different inclinations and positions. Therefore, this tsunami simulation system can provide a great help to estimate and explain the phenomena of tsunami which may change its condition in different landforms.
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妤冷唷!在這樣寒冷的天氣裏(室溫攝氏13度-1 5度),我們天天都要穿著好多的衣服到學校去。可是,仍然不覺得很溫暖,而且又笨重,活動起來又不方便。因此,我們便去請問老師:冬天裹,衣服穿得越多,是不是越保暖?倘若不是,要怎樣穿衣服才會覺得既舒適又保暖呢?於是,我們便做了以下的實驗和研究。
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膜粒通道---蛋膜粒子通道滲透速率之研究
這是一項以蛋膜為對象的研究,並配合化學課及生物課所學的滲透原理。藉由電導度計測量電導度的變化,間接推得濃度以探討粒子經由蛋膜的滲透速率,分別探討不同濃度的電解質溶液、相同陰離子不同陽離子的溶液、及相同陽離子不同陰離子的溶液,並且探討離子溶液受磁場N、S極、不同位置的影響,以及其他粒子溶液通過蛋膜的情形,加以分析討論。一開始使用電導度計測量實驗裝置一號蒸餾水端的電導度變化情形,研究後發現問題,改善成新的實驗裝置二號,確定它的滲透速率情形。再度發現問題,設計實驗三號,測量離子溶液端及蒸餾水端距蛋膜0 cm處的電導度變化情形,企圖了解各種離子的蛋膜滲透、擴散與磁場的相關性。
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Nicholas’s project is a transforming robot, who he has named Reggie. He's about a foot tall and can transform from a biped into a vehicle and vice versa?\r Reggie has been Nick’s project for just under a year now, mainly working on him in technology classes. He operates without physical connection to anything else, so everything he needs from micro controllers to power is stored somewhere on Reggie’s body?\r Reggie is controlled through a programmable Arduino board (programmed in C++) that is connected up to a motor driver, for controlling the two driving motors and an SSC-32 servo controller for controlling the 14 servos via serial port. The Arduino uses the SSC-32 to coordinate the servos movements using pre-programmed sets of movements stored in procedures in order to complete all actions.\r All the parts were produced on a 3D CAD system to begin with, as well as the robot as a whole, although the design did change drastically over the course of its construction and now is considerably different from the original design as there were many problems and complications ranging from space to torque issues that called for a change in design.\r Most of the parts were from the servo erector set from lynx motion, although some of them were used in the way they were intended to and most of them were modified slightly. Some parts Nick manufactured himself either on a rapid prototyping machine, a lathe or milling machine and sometimes a combination of them or even high temperature soldiering?\r Currently Reggie is capable of driving and standing up and is currently radio controlled. He will eventually be capable of walking and modifications to allow him to (such as stronger leg servos) have been made to facilitate that, but it is possible more may have to be made.
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每當我餵我家的魚時,都會先拍魚缸,久而久之,只要拍魚缸,魚就有了靠過來的反應。於是我想低等動物是不是也有相同的情形呢?於是我就用有明顯頭部,但不是很高等的「渦蟲」來做實驗,加以探討。
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Drought and inundation are two unusual natural disasters in Taiwan. The two natural disasters\r have some relation of abnormal rainfall become more and more in Taiwan. So it let me think about\r can climate vicissitudes make the chance of abnormal rainfall become more?\r The study have researched the chance of abnormal rainfall by "rainfall duration" and "total\r rainfall". It collect the day by day total rainfall from 1960 to July 2002, collect locals are Taipei,\r Taichung, Kaohsiung and Hualien. Than enter the data into the computer, let computer calculation\r total rainfall, rainfall days, heavy rain days, pouring rain days and torrential rain days. Then\r analysis the tendency of long-term change.\r According to the analysis, the chance of abnormal rainfall happened become more in Taipei,\r Taichung, Kaohsiung and Hualien. The ratio of Hualien and Kaohsiung is the most obviously. It's\r also find that there temperature and total evaporate became higher, the total sunshine duration\r became lower. Then El Nino have some influence in abnormal rainfal. In El Nino year, total rainfall\r will become lower. When La Nina year, the total rainfall will become more in Taipei and Hualien.\r Then the long influence is clearly in Taipei.\r 乾旱與水災是台灣地區相當常見的二項天災,這二項災害的發生都與異常降水有直接的\r 關係。近年來台灣地區因異常降水造成的天然災害,似乎有逐年增加的趨勢。因此讓人聯想\r 到氣候變遷是否會導致異常降水頻率增加。\r 本研究主要由「降雨時數」與「降雨量」二方面探討異常降水發生頻率。先收集台北、\r 台中、高雄、花蓮四地自1960 年至2002 年七月三十一日之逐日雨量資料,將資料輸入電腦\r 後,統計各站歷年降雨量、降雨日數、大雨、豪雨、暴雨日數,並分析長期變化趨勢。\r 分析結果,台北、台中、高雄、花蓮四地異常降水發生機率,有增加的情形;其中以花\r 蓮及高雄變化的比例最高。再與其他各地氣象要素比較可發現,可能與氣溫及蒸發量數上升,\r 以及日照時數縮短有關。另外聖嬰現象也可能對異常降水有長期性的影響。一般而言聖嬰年\r 雨量減少,反聖嬰年台北、花蓮地區雨量反而會增加。而長期性的影響,以台北地區最顯著。
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「太陽能熱水器」因為價錢昂貴,推廣不易。我們發現『水桶裡的水曬太陽後,可以變成熱水洗澡』。於是嘗試改良容器、蓋子的材質,並利用溫室效應、鏡子反射光等方法增加水溫。希望找到省錢、好用的洗熱水澡方法。根據實驗,我們得出下列的結論:1. 容器使用塑膠水桶,蓋子使用淺色垃圾袋為最安全、水溫又高的方法。2. 包了垃圾袋水桶的水溫上升原因有二:(1)防止熱對流散失(2)溫室效應增溫,因為藍色垃圾袋能阻擋紅外線。3. 外罩壓克力箱有加熱和保溫效果。桶子內、外放鏡子都有加熱效果。4. 利用此方法洗澡,一戶家庭一年約省下4400 元的天然氣費!
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在一次課外進行的示範實驗中,化學老師用玻棒將KNO3的飽和溶液塗在白紙上上,以吹風機把水吹乾後,以線香去點塗過KNO3的地方,會發現火星會沿著塗過KNO3的軌跡燃燒,示範後,我們實際操作,發現KCIO3也有這種特質,於是有人嘗試以KNO3加上KCIO3的溶液進行實驗,意外的發現在實驗進行時,軌跡之前端會出現小小的球(爆燃),邊滾邊燒,且球中有一些氣體,為得知這是什麼,於是設計,進行以下的實驗。
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台灣地區青少年體表面積與相關生活因子之研究
人體表面積在醫學的應用相當重要:燒燙傷的評估是以全身面積被灼傷的百分比 表示;營養狀況的評估,新陳代謝率也以單位表面積表示之;體液或藥物之需求量也 是以體表面積來決定劑量;然而人體是一不規則物體,應用一般幾何面積計算公式有 其困難處,如何快速的計算人體表面積,以作為醫療的指引,有其必要性。而青少年 正處於快速發育期,各部位的成長是否會影響表面積的計算,由於目前鮮少對青少年 之專文報告,尤其缺乏台灣地區之調查。為了探索這些問題,乃進行調查與研究。 本研究以台灣地區國民中小學10 至15 歲青少年為對象,探討在此發育期間體格 之變化及可能之影響相關因子,並建立體表面積之快速計算公式。本研究隨機取樣以 1209 人形成樣本,其中男生623 人,女生586 人,利用尺秤,取得身體各部位的資料, 並以問卷調查運動、飲食與睡眠等問題,以探討影響此成長期發育之因子。結果發現: 台灣青少年體表面積快速計算公式為(身高x 體重 ÷37)0.5;其體表面積九分法計算方 式也有別於一般歐美成年人的計算法;及此年齡層的身高與體重受運動的頻率、運動 持久性、飲食習慣多寡的影響,而與運動種類及主食種類相關性不大,這項研究的發 現,將有助於醫護人員對青少年問題的處理。Body Surface Area (BSA) has been used in many clinical conditions to calculate the percentage of burned area, to evaluate the nutrition status - the unit of the metabolic rate, to determine the need of fluid supply or the medicine dosage requirement. So precise measurement of BSA is very important, however the human body is an irregular shape, a laborious task using the geometrical method. To establish a simple quick formula to guide the therapeutic treatment is a necessity. Also the rapid growth phase during the adolescent stage might change the BSA in some way. BSA has not been established for the teenagers in Taiwan. To investigate this issue, a total of 1209 healthy elementary and junior high school boys (623) and girls (586) aged 10 to 15 in Taiwan were recruited by random selection. By use of anthropometrical measurements and a health questionnaire to the subject simultaneously, the data was analyzed statistically. The results revealed that a quick adequate formula derived from the body height and weight for Taiwan teenagers was determined by the formula, BSA = [ Height (meter ) x Weight (Kg) ÷37 ] 0.5, the Taiwan teenage “rule of the nine” of BSA is different from that of the adult, and that the frequency and the duration of exercise, the diet habit, and the duration of sleep significantly influence both body growth and weight. These findings may provide significant references for the physicians to treat the clinical conditions of teenagers in Taiwan.
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在三年級的下學期,上自然課時,我們學習了紋白蝶的生活史,牠由卵一幼蟲一蛹一成蟲,一生中四種形態,我對這個問題感到非常有趣,紋白蝶,以外的蝴蝶是不是也是一樣呢?有一天在家裹果園的馬鈴草叢葉片上,捉到了好幾個圓圓的卵,說不定是蝴蝶卵,如果這樣,它不是就會變成美麗的蝴蝶嗎?第二天把它帶到學校裹請教賴老師,賴老師鼓勵我們飼養它,大家便在賴老師的指導下:從事飼養的活動。
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