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聽海哭的聲音~探討影響海洋噪音的因素
本研究透過實地採樣與實驗室模擬,欲探討影響海洋噪音的因素。在實際採樣中,實地測量高雄市區各處水體之酸鹼值、鹽度及吸聲係數,以探究實際環境中水體如何影響聲音吸收程度。在模擬實驗中,改變水體不同酸鹼值、鹽度等因素並測量聲音音量之吸收係數。結果表明聲音吸收程度受水體酸鹼值影響較大,且吸聲係數在pH7.6~7.8之間有一極大值,因此隨水體的酸化和鹼化,吸聲程度皆降低,以酸化降低較快,鹼化降低較慢。
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The Use of Brine Shrimp to Test for Water Pollutants
The use of brine shrimp nauplii to test for the overall toxicity of sediment samples is proposed. Brine shrimp nauplii were cultured with different concentrations of heavy metals, including chromium (III), copper (II), nickel, lead and zinc, and organic pollutants, including triclosan, oxybenzone, octinoxate and bisphenol A. The brine shrimp nauplii were observed under a dissection microscope to determine the death rate. Results showed that brine shrimp nauplii are more sensitive to copper, cadmium, bisphenol A and oxybenzone. The LC50 (24h) are 55.5, 24.9, 5.6 and 2.7 ppm respectively. Zinc is likely to have synergistic toxic effect with nickel or lead. The synergistic toxic effects of other heavy metals and organic pollutants should be confirmed with further investigations. Brine shrimp nauplii were treated with extracts from sediment samples collected from the oyster culture zone of the Deep Bay, namely Pak Nei, Sha Kiu Tsuen and Hang Hau Tsuen. The sediment samples were extracted with neutral sodium acetate to dissolve the exchangeable heavy metal ions and some organic pollutants. The death rate of brine shrimp nauplii treated with the sediment extract of Hang Hau Tsuen was similar to 1 ppm PBA. It was also about 10 to 20% higher than that of the other two sites (Pak Nei and Sha Kiu Tsuen). Since Hang Hau Tsuen is closer to the residential area and Lau Fau Shan Seafood Market than the other two sites, its sediment sample is likely to have a higher level of environmental pollutants. The results suggest that brine shrimp nauplii may be used as a biomarker to monitor the environmental changes in the overall level of pollutants in sediment samples.
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Nowadays, all blind people are able to read any type of text thanks to The Braille system, which is a system of reading by touch. The Braille system provides a good and important help to blind people but it’s not enough. They try to integrate into society, try to read and write the same as those blessed with sight. However, only 18% of people can actually write in Braille and doing so takes a lot of effort. While Braille techniques have existed for many years now, there isn’t one that takes advantage of the comfort and easiness of modern technology. To be fair and give more chances to the blind people, and with all the available technologies nowadays, we must find solutions and innovative ideas to fulfill this objective. And this is how our project was born. To be honest, it’s not just a project, for us it’s a dream. Our focus in this project is creating an automatic machine based on transforming our language to their language and transforming this new invention to assist the blind in writing whole texts through speaking. It will be easier than the traditional way. This part of the project will help us print Braille on paper automatically in the cheapest, fastest and easiest way, unlike the traditional method that not only takes a lot of time but also needs a professional. Our printer will only cost approximately 250$ compared to regular printers that cost 6500$! the principles of the code of the speech recognition are voice pickup in all languages as first step, second speech recognition, then speech translation, after that speech analysis and finally translation into Braille and printing it. As for the future, we will work on face, object and image recognition as a scanner to make the visually impaired people read the name of the object and recognize people’s faces like anyone else.
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極性的液體在電場中會偏折,而本實驗發現非極性的液體在電場中也會偏折。我們發現偏折現象為靜電感應所致,並非摩擦起電或感應起電。在非極性液體當中,被極化的程度是影響偏折的主要因素,而我們發現被極化的程度與液體分子的電子總數呈正相關。在極性液體中,除了分子的極性大小會影響液體的偏折之外,被極化的程度也是重要的因素。而水、乙二醇與丙三醇這類的物質中,因分子間氫鍵個數較多,造成液體在電場中較不易被靜電感應,故偏折較小。
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無毒有「單」~探討單寧酸作為生物農藥的可行性
本篇探討「單寧酸」做為生物農藥的可行性,結果發現偽菜蚜體表蠟粉被破壞,單寧酸接觸後具一定程度立即致死能力,生物農藥測試組(乳化劑+油+3%單寧酸溶液)立即致死率69.5% (10min)。生物農藥測試組和噴水組之農作物質量表現,無達到顯著差異( p>0.05),顯示生物農藥試劑對作物生長影響不大;以分光光度計分析,作物與環境土壤均無殘留,且作物易洗淨。生物農藥試劑對於不同科害蟲,以葉蟎致死率最高,為86.3%,而對蚜蟲及介殼蟲則分別為71.3%與61.6%。野外測試發現生物農藥試劑之驅蟲率,D1已達96.1%,而D2則達98%,D3達100%。吸食試驗顯示,生物農藥測試劑組對蚜蟲致死率約90%,顯示本生物農藥試劑不僅具立即接觸毒殺,也兼具長效吸食毒殺的效果。
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本研究在探討「不同液體的液滴」在「不同的固體表面」上的蒸發行為。研究的目的有三:1. 觀察不同溫度及體積的水在固體材質上的蒸發情形;2. 觀察不同液體在不同固體表面上的蒸發情形;3. 探討液滴蒸發過程的接觸角、高度及直徑的變化。 本研究統整不同液體於不同固體表面上的蒸發狀況可得到以下結論: 液體的內聚力及與固體表面的附著力,會影響接觸角的大小,液滴的接觸角與蒸發的速率有關,接觸角角度越大,內聚力相對附著力越大,而蒸發時間越長;接觸角角度越小,內聚力相對附著力越小,而蒸發時間越短。
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以Seq2seq模型實現論文心智圖自動生成工作
做研究時,經常需要閱讀多篇長篇論文,如何快速理解並歸納重點是影響效率收益的關鍵任務。針對此問題本研究運用深度學習配合其他程式算法輔助。將整個問題拆解成三個主要部分:模型處理、結構剖析、心智圖輸出,模型處理的部分我們訓練了三種不同的Seq2seq模型實現文本摘要,分別使用LSTM、BERT、ALBERT、比較並選擇綜合效益最好的模型;而負責拆解論文的結構剖析系統,則利用論文目錄分解整份論文,最後,心智圖輸出系統則整合剖析系統與模型結果,再調用Xmind API去生成架構清晰易讀易理解的論文心智圖。
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Hydrogen Functionalization of Graphene using RF Plasma for photodetection
The growth of the internet is propelling an ever-increasing need for faster communication. Modern telecommunication data is mainly carried through fibre-optic cables, with pulses of light representing bits of data; the main factor limiting data transfer speed is the rate at which the optical receiver at the opposite end of the cable can detect light pulses. Graphene-silicon Schottky photodiodes are a promising alternative to traditionally-used germanium photodiodes, promising higher detection frequency and better contrast between light and dark. To make it less susceptible to erroneous measurements due to graphene having a low band gap, hydrogen functionalisation was used to increase the barrier potential of the Schottky diode so that a higher voltage would be required to allow current to pass through in forward voltage bias and trigger the sensor. This study seeks to determine the optimal conditions — of physical proximity, duration of exposure, and plasma power — for hydrogen functionalisation using radio frequency plasma. Graphene was synthesised using low pressure chemical vapour deposition, then transferred onto P-type silicon to create a photodiode. The graphene-silicon photodiode was then doped with hydrogen plasma to introduce defects in the graphene layer to increase the barrier potential of the photodiode. To assess the effectiveness of hydrogen functionalisation, photocurrent measurements were conducted while light was shone onto the photodiode in pulses of increasing frequency to find the magnitude and spontaneity of the response. Light was shone in pulses of 100ms, and was successfully detected by the photodiode. The pulse spacings were gradually decreased and it was found that the diode was able to detect pulse spacings as low as 1µs, significantly better than germanium photodetectors. The sample demonstrated clear optoelectronic response and was sensitive to changes in frequency. Results show that the intensity of the optoelectronic response in graphene-silicon diodes is inversely related to its physical proximity to the plasma source during hydrogen functionalization; and directly related to the power of the plasma and to the duration of exposure up to a point, after which it will deteriorate. Thus, it can be concluded that graphene-silicon Schottky diodes offer much promise in electronic communication.
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香氛介入對中學生課業壓力與身心健康之影響
本研究旨在探討不同背景變項國中生在課業壓力與身心健康之差異與相關情形,並探討香氛介入對中學生課業壓力及身心健康之影響。研究以經信效度分析之自編量表(課業壓力量表信度為 .82,身心健康量表為 .87)進行問卷調查。以方便抽樣方式選取北部中學生為研究對象。採不記名方式進行前測及後測,期間以擴香方式施行為期數天之香氛介入。研究結果顯示:女性國中生課業壓力及身心健康的得分在統計上顯著高於男性,不同年級之間則未達顯著差異。國中生課業壓力與身心健康得分呈正相關,即課業壓力越大,身心健康情形越差。香氛介入對國中生課業壓力與身心健康並無顯著作用,但對高中生之個人壓力有顯著降低之效果。
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探討Naa10p突變對神經發育的影響
Naa10p (N-alpha-acetyltransferase 10 protein) 突變患者多半有智力障礙的問題,如:奧格登症候群患者常有早夭、腦萎縮及其他發育問題。Naa10p 是一種 N-α-乙醯轉移酶,負責新生肽鏈 N-α-乙醯化。人體中約有 80% 的蛋白質經乙醯化修飾,其中 46% 為 NatA 複合體執行,而 Naa10p 即是 NatA中執行乙醯化的蛋白酶。先前研究顯示Naa10p會影響神經發育,但對Naa10p影響神經發育的機制並不清楚。本研究利用CRISPR/Cas9製作Naa10p的小鼠胚胎幹細胞(mESC)突變株,觀察突變株細胞分裂速率與分化型態的差異,並分析胚胎發育過程Naa10p以及相關基因的表現。 本研究結果證明特定Naa10p突變會加快mESC生長,使其分化為神經母細胞的異常。而其中V111G突變株的Naa10p無法和HYPK結合,且突變S37P及R116W使Naa10p與Naa15p的結合降低,推論此結果可能造成NatA無法正常形成,並改變其與核糖體蛋白的親和力,影響蛋白質乙醯化。目前我們發現突變株中,與細胞分化相關的基因:Oct4、Pax6皆表現異常。以上結果可能可以初步解釋Naa10p突變造成人類疾病的機制。
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「倒」高一尺,「蚊」高一丈--探討積水容器中白線斑蚊卵被刷下後仍能孵化的可能性
利用『巡、倒、清、刷』來清除登革熱病媒蚊孳生源時,仍有一些操作細節要注意,本研究就是針對『刷』的部分,將積水容器內壁的白線斑蚊卵刷除倒掉,來減少病媒蚊的孳生。根據本研究的研究結果,在刷積水容器時,如果這些卵隨著積水直接流入水溝中,不論水質為何,這些卵不但仍會孵化,而且和原本積水容器中的斑蚊卵自然孵化率相較,並沒有太大差異。如果把這些卵倒在地上,經過一段時間乾燥,當一場雨把卵沖入水溝或水坑中,這些卵仍然有很高的孵化率;這些卵的孵化率,受到乾燥時間的長短、最否受陽光照射、陽光的強度,地面材質的吸熱升溫的影響,乾燥時間愈長,照射陽光愈強烈,地面材質受熱愈容易升高溫度,則白線斑蚊卵的孵化率愈低。
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粗糠「鋅」用途—以廢棄稻穀灰為主要原料製備氧化鋅結晶釉之研究
本研究文獻探討並將碾米後剩餘的稻殼灰為主要原料製備鋅結晶釉及實驗含稻殼灰之鋅結晶釉的各種變化並以溫度控制法,將美麗的矽酸鋅結晶體留下來,研究結果含50.66%稻殼灰釉式升至1240℃後,在40分鐘快速降至成核期在攝氏1120度,持溫1至7小時均能產生美麗的結晶。產生結晶的氧化鋅重量百分比為25%,若想追求藝術上的美感,氧化鋅重量百分比可在26~30%為佳。結晶成核時期的持溫時數,與結晶核數量及結晶最大粒徑成正比。鋅結晶生成燒製須以氧化的氣氛燒製,還原燒的火焰及缺氧狀態會干擾結晶生成。含50.66%稻殼灰之釉製成建築磁磚用釉在硬度及耐酸鹼測試均滿足台灣CNS磁磚品質規定,使用廢棄稻殼灰為主要原料製備氧化鋅結晶釉可大幅減少釉用原料成本。
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