搜尋結果
查詢 共找到 15078筆。 如查無相關資訊,可至 進階搜尋 進行查詢
熱門關鍵字: the king 水果 豆漿 電腦
線上教學資源

動感自然課—體感式學習融入自然科教學

> 更多

科展作品檢索

Eye gone V.S.eyeless決定果蠅複眼發育基因之協同作用與未知調控基因之尋覓

In this study, we try to know how ectopic eye genes: eyeless(ey), eye gone(eyg), twin of eyeless(toy), twin of eye gone(toe) act cooperatively, and look for some unknown genes which affect the function of eyg. First, through human trans gene screening, we find two human genes change the phenotype of ey>eyg into dorsal out-growth when they co-express with eyg (ey>eyg+X). It means the two genes may relate to cell proliferation. Second, by sequencing the insert genes of mutant fly which was found by EP screening, the result shows the site of the insertion is the same as effete (eff) gene. eff translated wrong proteins which differ from functional ubiquitin-conjugating enzyme may be the major cause of the mutant eye . 本研究係探討果蠅複眼異位基因eyeless(ey)、eye gone(eyg)、twin of eyeless(toy)、 twin of eye gone(toe)間的協同作用,並尋找與eyg 有交互作用的基因、突變株。藉由人類基因轉殖篩選,找到兩株人類基因轉殖株,當其與eyg 共同表現時(ey>eyg+X),會改變ey>eyg 的複眼性狀,造成dorsal out-growth,顯示這兩個基因可能與細胞增生有關,此外,藉由EP screening 複眼發生突變的果蠅之UAS 下游基因經比對後,位置與effete(eff)部分契合,推測複眼發生突變的原因是eff 的功能發生異常,致使細胞內蛋白質代謝失常所致。

> 更多

科展作品檢索

神經妙算流博村-是洪水?是山崩?

南投溪頭米堤飯店在2001 年因土石流受創,產險公司以「土石流即是山崩」為由拒絕理賠。歷經5 年的訴訟後,2007 年1 月台灣高等法院認定,土石流屬保險契約中所規範的「洪水」,並非「山崩」,判決產險公司應給付賠償金。土石流究竟是洪水?是山崩?主要因素便是土石流發生的水文因子。本文藉由博愛村的現場調查及文獻探討先作初步資料分析(preliminary analysis),了解到地文因子(physiographical factor)是土石流發生的充分條件,非必要條件;一般僅考慮雨量因子,把地文因子看作常數(忽略地文因子受水文因子歷程(course)影響),簡單易懂,但在安全與經濟考量上有待討論。使用類神經網路對已發生過的土石流事件計算土石流發生臨界曲線,並使用模糊理論計算松鶴地區其受水文因子影響的土石流發生臨界曲線,這樣的模式,考慮似乎比較周到。由「米堤飯店」的例證,更說明土石流發生的水文因子的必要性。Lemidi hotel, Xitou, Nantou because mudflows and landslides and was wounded in 2001. The Insurance Company refused to settle a claim on the position on “A landside is a debris flow”. After the lawsuit which was going through 5 years. In January, 2007, the High Court of Taiwan asserted that the adversity in the 2001 belongs to “the flood” in the norm of the insurance agreement. As the norm of the insurance agreement said, the debris flows in the land is the flood, not the “landslide”. The High Court of Taiwan judged that the Insurance Company should compensate the Lemidi Hotel. Is debris low a landslide or a flood? The main cause is the Hydrology in the happening of a debris flow. We did preliminary analysis of forms by on-the-spot investigation on Song-Ho Village and reference discussing. We realized that physiographical factor is an abundant condition for a happening of a debris flow, not the essential condition. Generally, people only consider rainfall factor. And they consider physiographical factor as not as constant (neglect the influence of hydrology factor to physiographical factor). We can understand easily in that way. Therefore, in the aspect of security and economy, there is much doubt that is needed to be discussed. People who use neural network method to calculate the curve of the debris flow happening , and used fuzzy theory to calculate the curve of the debris flow happening which is influenced by the hydrology in Song-Ho Village. In that way, we may consider more thoughtful. From the example of the Lemidi Hotel in Nantou, we can prove that how necessary the hydrology factor in the debris flow is.

> 更多

科展作品檢索

渦蟲的制約反應

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。

> 更多

科展作品檢索

青春永駐----探討地瓜葉烹飪之顏色變化

研究發現地瓜葉存放方式及料理方式會影響變色,包括變不綠、變黃及變黑;變不綠、變黃兩項和葉綠素有關;存放時接觸光線、空氣因葉綠素被葉綠素?分解而變黃,若葉子折損,因細胞內水解性單寧和酚?作用而產生褐變;水煮中細胞被破壞釋放酸性物質,使葉綠素脫鎂變橘色,添加鹽或小蘇打可穩定葉綠素,但無法阻止葉子變黑。葉子會變黑是在水煮後靜置才會出現,因此判斷是葉子中的凝縮類單寧氧化所導致,而梅納反應造成的變黑影響較小。\r 凝縮類單寧在空氣中久置會形成紅棕色沉澱;水煮時高溫加速反應,添加亞硫酸鹽類則可以抑制凝縮類單寧氧化。地瓜葉煮後變黑程度甚於其他蔬菜,是因其含有較多凝縮類單寧,而產生之變黑物質具抗氧化能力。

> 更多

科展作品檢索

趨光性及族群壓力的探討

The purpose of the research was to find the relationship between the fruit fly’s attraction to light (or heliotaxis) and their genes. Fruit flies, because of their short life span of approximately two weeks, and their simple requirements for survival, are ideal candidates for the study. With a specially designed device "Mi Gong" for the experiments, fruit flies could be separated and cultivated in accordance to their preference to specific wavelengths of light. They received cross-breeding and were studied to learn the ratio of the resulting offspring in their preference to the light. It was observed that the majority of the fruit flies were more attracted to violet light. It was also found that the next generation of the fruit fly inherited higher sensitivity to the light than their parents. Knowing that there could be potential margin of errors in the experiments, the results of the study demonstrated that light, as an external source, had limited impact to heliotaxis of fruit fly. The study suggested that insects with heliotaxis, including fruit fly, inherited heliotaxis in their genes. The study also pointed out the potential benefits of employing heliotaxis in many areas especially in the agricultural development. Furthermore, heliotaxis can be utilized to study the difference in the behavior of nightlife insects before and after the invention of manmade light source.這項研究,主要是在探討果蠅的趨光性和遺傳的關係。很多種昆蟲都具備趨光性,我們之所以以果蠅作實驗,主要是因為其生活週期短,大約兩週,且易於培養。實驗內容是以「迷宮器材」來鑑別果蠅對某一特殊色光的偏好,將該群果蠅分離出來培養,令其繁衍後代,觀察其後代對此一色光偏好的比率,我們所用的果蠅大致上對綠色光較敏感,而其子代的敏感度較親代高。因此,我們推論趨光性會遺傳,且受光影響,但並非全由光影響,故這可能是實驗中的誤差成因。雖然此實驗是以果蠅為對象,但亦可假設其它具趨光性的昆蟲,也可能是因遺傳而導致其子代有趨光性,而我們可利用其趨光的一些特性,減少農作物因害蟲類的果蠅而損失,並且希望可以得知,在人造光源還未出現在世上時,夜行性昆蟲是否有差異。

> 更多

科展作品檢索

蝴蝶鱗片散熱的秘密──仿生材料的探討與應用

為探索蝴蝶為何在太陽光的高溫持續照射下仍可以快速散熱,且優美自在的飛翔, 所以本研究想進一步瞭解蝴蝶翅膀的構造, 及其散熱機制之後,仿照此一機制其中的蝴蝶鱗片的材質- 細微幾丁質, 達到材料仿生的目的。本研究將蝴蝶鱗片, 100%幾丁質, 細末甲殼素(92%幾丁質), 奈米碳,石墨烯,及散熱膏,在燈泡上加熱, 以尋求散熱最佳組合; 也將之應用在熱水加入玻璃杯, 鋼杯, 鋁合金等容器之外殼, 更將甲殼素與散熱膏混合物, 填補在電腦CPU與熱管縫隙中, 實驗結果得證, 果然細末幾丁質(本實驗稱甲殼素), 果然有良好的散熱傳導效果。

> 更多

科展作品檢索

磚切鑿器

本次作品「磚切鑿器」利用剪力原理、鋼構特性以及橡膠的吸震原理及其特性進行研究,讓磚塊切面平均受力,再利用瞬間剪力切磚,在這樣的構想之下,多次的研究、討論以及嘗試才做出這次的作品,這次的作品不僅可以讓磚塊有平整的切面,安全性也比傳統的方式高,另外在切磚的過程中也不會產生污染,而且維護及維修簡易,移動性高也增加了使用的實際性,過程中也不會產生許多的公害,可稱作是綠色工具。

> 更多

科展作品檢索

QQ 果凍--洋菜凍的彈性

本實驗是『讓洋菜替彈性說話』,藉由自製之儀器來測量洋菜凍的形變情形,利用洋菜凍來探討虎克定律和楊氏模數之彈性問題。實驗過程中發現洋菜凍在室溫下凝固,易造成內部濃度不均勻,於是,我們利用0℃的冰作冰水浴,改善此濃度問題。由實驗數據分析得知,相同濃度的楊氏模數並不是常數,而與長度、面積、體積及形狀有關,並推測楊氏模數的常數和面積及長度成線性關係。再者,我們發現壓縮洋菜凍時,圓柱狀的洋菜凍其形變輪廓為均勻變大,而三角柱、正方柱與長方柱的形變卻有不均勻的圓化現象,由此不均勻變大之輪廓,設定一內部等效彈簧模組計算,可說明上述三種柱體的變形有趨向於較低彈力位能之趨勢。

> 更多

科展作品檢索

翻滾吧!骨牌~旋風魔方陣

推推樂的連鎖效應遊戲是多數人對骨牌的印象,殊不知骨牌上的點數也可以營造出好玩且具思考性的數學拼組活動,有幸在去年高雄市的科展中看到多米諾骨牌的活動介紹,激發了我們深入探究的動力,因此以骨牌拼組的九宮方陣作為本次研究的主題。本研究將骨牌上的點數改換成數字模式,製作出整組的數字骨牌,進行九宮方陣的拼排,在窮盡所有的組合中,我們歸納出三大組型~對稱型、可逆型及單一型,並分別進行規律的分析與探究。再則,我們也發現同骨同 N 不同組法的骨牌組成元素及同骨不同 N 的骨牌組成元素,並利用自己研發的交錯搭配法來快速研判能否拼組成功。除了九宮方陣外,我們運用九宮方陣的性質延伸設計出更有難度的方連組型及風車組型,並將此本次的研究成果設計成五套益智動腦的遊戲組,讓大家一起來挑戰動腦筋。

> 更多

科展作品檢索

Mathematics in Music

Mathematics and music are two poles of human culture. Listening to music we get into the magic world of sounds. Solving problems we are immersed in strict space of numbers and we do not reflect that the world of sounds and space of numbers have been adjoining with each other for a long time. Interrelation of mathematics and music is one of the vital topics. It hasn’t been completely opened and investigated up to now. This is the point why it draws attention of a lot of scientists and mathematicians to itself. This is the point why it draws attention of a lot of scientists and mathematicians to itself. Having considered the value of these two sciences, it seems to us that they are completely non-comparable. In fact can there be a similarity between mathematics – the queen of all sciences, a symbol of wisdom and music – the most abstract kind of art? But if you peer deeply into it you can notice that the worlds of sounds and space of numbers have been adjoining with each other for a long time. In the work I will try to establish the connection between mathematics and music and to find their common elements, to analyze pieces of music with the help of laws and concepts of mathematics to find a secret of mastery of musicians using mathematics and also to investigate the connection of music with mathematics with the “research part”. They are my own calculations and researches which are an integral part of the work. The connection of mathematic and music is caused both historically and internally in spite of the fact that mathematics is the most abstract of sciences and music is the most abstract kind of art. V. Shafutinskiy, I. Matvienko, m. Fadeev, K. Miladze, Dominik the Joker – modern composers of the XXI century – have used the golden proportion only in 4% of their pieces of music and more often in romances or children’s songs. I have revealed this fact after investigating their pieces of music of different genres. However there is a question: why does modern music attracts all of us more but the classics is being forgotten? Investigating connection between mathematics and music I had come to the conclusion that the more deeply the piece of music gives in to the mathematical analysis, to research and submits to any mathematical laws, the more harmonious and fine its sounding is, the more it excites human soul. Besides I am convinced that many important, interesting and entertaining things have not been opened in this field. We can safely continue our research of these things. I think that I have managed to lift a veil over mathematics in music, to find something common for apparently incompatible science and art. In due time English mathematician D. Silvestre called music as mathematics of feelings, and mathematics – as music of intellect. He expressed hope that each of them should receive the end from the part of the other one. In the future he expected the occurrence of a person in which Beethoven and Gauss’ greatness would unite. Terms ‘science’ and ‘art’ practically didn’t differ during far times of antiquity. And though roads of mathematics and music have gone away since then music is penetrated with mathematics and mathematics is full of poetry and music!

> 更多

科展作品檢索

情「豆」初開,「酵」一下!

係因市面上的豆漿都標榜高營養價值,本實驗將探索如何製出易於人體吸收的豆漿,即泡製豆漿的條件如能讓黃豆酵素充分作用,將有利豆漿中大分子轉為小分子。 本實驗以不同浸泡時間、溫度、pH值、添加物來探討澱粉?和蛋白?的作用,結果顯示在乾燥黃豆泡水26.5小時內,澱粉?表現極佳,蛋白?則表現很少:澱粉?在23~26小時、50℃、加入添加物綠茶粉、維生素C、葡萄籽、鐵劑作用最佳,因此泡製過程中依此條件將可助豆漿的澱粉轉為葡萄糖,蛋白?在35℃作用效果略佳。如要直接攝取豆漿中的胺基酸,黃豆須先催芽一天酵素才能釋放分解蛋白質;在豆漿中加入乳酸菌,幫助蛋白質的分解。應用此項結果能製造較易於人體吸收的豆漿。

> 更多