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Fabrication of Tandem Dye-Sensitized Solar Cells to Enhance Photovoltaic Performance
Energy has had an enormous impact on the development of technology and is a main factor in humans’ advancement towards an evolved society. Nevertheless, nonrenewable energy resources – which are the most effective in everyday application - have led to changes in the climate, environment, human health, and the world in general [1], which has encouraged researchers to switch to the use of renewable energy sources. Solar Cells are one of the most effective resources that rely on renewable energy. They come in a variety of types, operation methods, and efficiency as shown in Figure 1, including Dye-Sensitized Solar Cells (DSSC), which, inspired by photosynthesis in plants, uses photo-sensitive dye to capture sunlight and generate electricity. DSSCs were proved to have generated a great deal of interest and are one of the most promising solar cells among third-generation PV technologies, due to their low cost, simple preparation, good performance, and environmental friendliness compared to conventional photovoltaic devices [3]. However, their efficiency is quite insufficient for everyday use. Previous studies proved that Tandem DSSCs – which are two dye-sensitized cells stacked on top of each other – are able to enhance cell performance. The light absorption range of a tandem cell is increased because the bottom cell behind the top one absorbs and uses the incident light that was not absorbed by it [4]. It operates as shown in Figure 2, where the light photons excite the electrons of the dye molecules. The electrons are then transported to the FTO (conductive glass) by the semiconductor, which is used in the figure as TiO2 nanoparticles. The electrons pass through the circuit to perform the work, then move to the counter electrode (shown as Platinum). They are then transported by the electrolyte (I-/I3-) back to the dye molecules, and the process is repeated.
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現代鬼動風水儀-利用壓電效應偵測並分析風場訊號之研究
看過震動型風力發電機與鬼動草現象後,便思考是否能結合兩者製作出一台「現代鬼動風水儀」? 風經障礙物會因康達效應改變風場,本研究利用壓電效應偵測風在震動裝置後端產生的卡門渦街,藉由分析電訊號偵測不同障礙物所產生的風場。自定義葉片的等效邊長,發現電壓約和等效邊長、平方風速成正比;另外,不同迎風角度、擺設狹縫或遮住半邊葉片都會使pp板產生小波,牛奶瓶紙則是可以建立迎風角度的預測模型。狹縫的電壓放大倍率可用三次函數擬合。遮住半邊葉片時牛奶瓶紙會產生共振放大效應(鬼動現象),而擺設圓柱則會使電壓增強,並且能建立電壓預測模型。 本研究成果可用來製作分析微小風場變化之大數據收集裝置,提供訓練AI及建立新的應用方向。
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「樹」造奇蹟,「桃」然無毒--校樹與第倫桃果膠於天然果醬和乾洗手之雙重應用
本研究探討校樹第倫桃在日常生活中的應用,我們先以第倫桃果膠搭配校園常見果實製成果醬,邀請60位家長與教職員試吃,結果以桑椹配方五最受歡迎。接著,我們結合第倫桃果膠與校樹葉或果皮萃取的精油,製作天然乾洗手,經吐司發霉與無菌培養基測試,證實具有一定抑菌力;保濕測試也顯示,第倫桃果膠能減少肌膚乾燥與油脂流失,使用感較佳,以西施柚果皮製成的乾洗手最受歡迎,獲得50票肯定。我們將產品帶至校慶園遊會販售,最受歡迎的是第倫桃與構樹果醬,以及白千層與西施柚的乾洗手,共募得2,490元,捐作急難救助基金。研究證實,第倫桃果膠在果醬與乾洗手的製作上皆具應用潛力,並能推廣校園植物的永續利用。
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First-Ever Study on Groundwater Discharge Zones in Tumon Bay, a Protected Marine Preserve: Novel Insights into Coral Reef Conservation
Current research shows Northern Guam to be composed of porous limestone bedrock which allow groundwater to flow out. One large discharge point has already been identified last year in north-western Guam at Ayuyu Cave. However, little is known about Tumon Bay which is known to comprise karst watersheds which should allow for SGD. This project has examined invisible groundwater discharge using a salinity meter and was able to detect two areas of concentrated freshwater discharges in Tumon Bay, with a few minor ones scattered throughout the bay. These seeps were found to have consistently lower salinity while pH varied, and hosted more marine life than other high salinity areas. Further unique coral growth in Tumon Bay’s inner lagoon was associated with these two freshwater discharges with the pH levels further segregating the types of coral species found during on-site observation. Two coral communities, staghorn Acropora and massive Porites, were found adjacent to the surveyed groundwater seeps. It’s inferred that lower wave energy in eastern Tumon Bay allows for greater plankton and other microbial growth leading to more heterotrophic coral growth, favoring Porites corals, while Western Tumon Bay has higher wave energy which leads to the growth of more autotrophic corals, such as the Acropora found in the first area surveyed. This is the first study to document the presence, location, and consequences of invisible freshwater discharges across the billion-dollar bay. This study gauges the effects of SGD on inner shore habitats, also providing a coral cover assessment across Tumon Bay using transects and quadrats. These discoveries allow for strategic coral planting, designated areas needing government protection, and show areas of appealing inner lagoon coral growth for tourism.
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猜拳與轉向中的運籌帷幄- 探討人類與鼠婦在連續決策行為 的偏好與決策經驗依賴等特性
本研究記錄人類進行「剪刀石頭布」遊戲時的決策行為,也設計T型迷宮建立鼠婦之負趨光行為作為動物模式,探討行為偏好與決策依賴性等特性。我們發現「出石頭」的機率較高,且時間間隔縮短後,「出剪刀」的機率增加而「出石頭」的機率減少,並會展現負相關的決策經驗依賴性,其中「慢出組」更為明顯,代表出拳間隔縮短而減少意識作用,負相關的決策經驗依賴性即會減弱。另一方面,鼠婦在負趨光性刺激剛消失後,仍呈現負趨光性的選擇方向,具有習慣性。鼠婦在選擇行走方向多次後,會呈現與前次選擇的正向相關性。在負趨光性的環境刺激後,上述的現象會先消失,而後再現。若負趨光性刺激方向轉換,則原先的趨光行為消失,應是因方向選擇的習慣性干擾了負趨光性的選擇。
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Evaluation of the Effect of Different Nutrients' Concentration and Composition on Hydroponically Grown Plant
As the world population grows, the demand of food products grows as well and there will be an expected food crisis in the coming years. To prevent those crises, alternative food farming methods must be used. This paper studied two farming systems in different conditions, to compare and find the best, natural and cost-effective system that will cover the current and future demand. The system which can also be used in those areas where soil is less cultivated with insufficient aeration. The first system is the soil-based system (traditional), and the other is hydroponic system. Hydroponic is a technique of growing plants in nutrient solutions with or without the use of an inert medium. Two types of seeds; peas and spinach were observed in both systems over a period of 25 days. In hydroponic plants coco peat was used in place of soil along with the Aegis nutrient. 8 plants were seeded for both types of plants in different systems, conditions, concentrations and pH to conclude the best condition. Growth parameters of all plants including root, shoot and leaf length were observed and recorded daily. On the uprooting, their weight (g), no. of root hairs and used nutrient’s volume(ml) were also recorded. Fungus and insects were seen in the soil plants. The results executed that the growth was maximum in spinach having normal manufacturer nutrient’s spray concentration(1.25ml/625ml) with pH 6 and in peas having normal supplier concentration (5ml/625ml) with pH 4. So, it can be concluded that hydroponic spinach, which is a green leafy plant, can ideally grow at the pH of 6 and peas in slightly acidic condition. Hydroponic planting system has a better growth effect than traditional soil system and this system don’t need any fertilizer, insecticide, pesticide, fungicide and herbicide. While soil plants’ growth was adversely affected by fungus and insects in the absence of these chemicals which can contaminate our food and make it less hygienic for our health. This result achieves the aim of this paper which is finding a planting system and its conditions that can increase the productivity to cover the food demand.
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DSUP: New Research On The Implementation Of Radioresistance In Cellular Systems
In radiation treatments and manned interplanetary space travel, radiation is one of the biggest problems. The radiotolerance of cancer cells makes it necessary to apply high doses to surrounding healthy tissues by subjecting the cells to heavy stress. With regard to space travel (which involves a minimum travel time of 6 months) (1,2) the danger concerns cosmic radiation which is capable of inducing genetic mutations that, in turn, can evolve into very serious pathologies, such as cancer, damage to dendrites consequently compromising synapses. The project is aimed at developing a technology that can address these issues and aims to make human DNA radioresistant. This study involves a nucleosome-binding protein called DSUP (Damage Suppressor Protein) unique to the tardigrade Ramazzottius Varieornatus and the subject of its radioresistance. It can theoretically safeguard genetic material damaged by radiation. *Internship theme at the Pino Torinese Astronomical Observatory and the DISIT-UPO Environmental Molecular Toxicology Laboratory. The study molecule: Numerous tests have been carried out through the "in silico" approach geared toward mathematical modeling of its protein structure and complex mechanisms of action simulated through artificial intelligence systems, followed by direct laboratory analysis involving biosynthesis of DSUP by genetically modified bacteria and related tests. Both approaches, applied synergistically, aim to make it accessible and useful for the protection of human health.
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熱不倒的番茄—耐熱細菌對番茄根莖之研究
本次實驗以地熱溫泉區的土壤中所篩選出的8隻耐熱菌種,並加以純化、液態培養,將8種菌液稀釋成度三種不同濃度(100X、200X、500X),以恆溫培養箱控制環境溫度(25℃、30℃、35℃)模擬環境變因,並測試和定量菌株的溶磷、固氮能力,亦測試載鐵、抗番茄萎凋菌能力及對於聖女番茄及桃紅番茄所帶來的影響。本研究發現 LC26 及 LC28 可於熱逆境下顯著促進聖女番茄生長,此外LC03亦能於熱逆境下明顯促進桃紅番茄生長。本研究也發現LC03、LC26及LC28對玉米及胡蘿蔔有最好的促進生長效果,而對青江菜有最明顯的抑制生長效果,可作為輪耕作物之參考。最後本研究發現這三隻菌種皆對大花咸豐草之生長有抑制情形,其中以LC26(500X)抑制效果最佳。
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快速合成金屬有機骨架複合材料用於微量工業廢氣吸附移除Rapid synthesis of metal-organic framework composites for removal of trace industrial waste gases
本研究開發一種新穎孔洞性吸附材料:金屬有機骨架 (MOF)。MOF 在反應溶液中自組裝形成孔洞結構,透過物理吸附有效捕捉氣相乙酸分子。研發出綠色、快速可在常溫常壓下大量合成三種MOF(HKUST-1(Cu)、UTSA-280(Ca) 及 A520(Al))方法。此外,為提升材料機械強度和應用價值,採用 PVA 聚合技術製備 MOF 複合物,使其造粒型化更易處理,提升商業和環境應用價值。吸附實驗結果顯示,HKUST-1(Cu) 粉末對乙酸移除率高達98%,而HKUST-1(Cu) PVA 複合物達93%,對比活性碳及其PVA複合物(移除率分別為85%和78%)表現更優異。MOF憑藉優異吸附性能和可大量生產低成本優勢,成為極具潛力有機無機氣體吸附劑,可為半導體產業提供一種維持高標準製程環境精密且簡便解決方案。
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Straw manufacturing for epidemic prevention
Recently,thefeedpricesforlivestockfarmshavebeencontinuouslyincreasing, while the prices of calves have been declining, leading to many livestock and dairy farms facing financial losses. If livestock farms are affected by diseases such as foot-and-mouth disease, they suffer significant losses. This is because reducedproductivityinlivestocknotonlyaffectstheirproductionbutalsoentails substantial costs for vaccines and treatments. Therefore, there is a need to explore how to effectively prevent diseases, focusing on common diseases in cattle such as subclinical mastitis and mastitis, and alleviate the burden on farms economically and environmentally. This study aims to investigate the production of bacterial growth-inhibiting straw bedding using substances such as illite and charcoal to contribute to disease prevention.
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本研究探討隨機生成數列的長度期望值。一個籤筒中有n支籤,編號分別為1,2,3,…,n,每抽出一支籤,就將抽取的編號寫在紙上,形成一個數列。數列只能向左右兩端添加項,不能從中插入。抽出的籤若大於目前數列的最大項,則將抽出的數寫在目前數列右邊;抽出的籤若小於目前數列的最小項,則將抽出的數寫在目前數列左邊;抽出的籤若介於目前數列的最小與最大項之間,則操作結束。基於此想法,研究者將數列依照添加項的方向分為「單向數列」與「雙向數列」兩類。顧名思義,單向數列只能向一端延伸(本研究不失一般性討論往右延伸),雙向數列代表可以向左右兩端延伸。此外,研究者又將數列分為「嚴格遞增減」和「非嚴格遞增減」兩類。在生成原理上,嚴格遞增減等價於「抽後不放回」;非嚴格遞增減等價於「抽後放回」。在這樣的規則下,本研究探討了n支籤抽完放回與不放回時,單雙向隨機生成數列的長度期望值之通解,並成功證明了一些恆等式及性質。
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本研究從著名的歐拉三角形公式出發,我們將圓內接同內心三角形,推廣至圓內接同重心三角形和圓內接同垂心三角形。有關同重心與同垂心三角形的存在性與作圖範圍,我們巧妙利用原三角形的九點圓來進行刻劃!再將研究項目放在同心三角形的邊的包絡線,我們先給出其焦點,再用純幾何方式來證明銳角三角形時,其包絡線為橢圓;鈍角三角形時,包絡線為雙曲線;直角三角形時,則是退化為垂心與外心。值得一提的是,本研究進一步整合同內心、同垂心、同重心三角形,發現面積成等比之關聯性。最後考慮將圓內接改成圓外切的同心三角形,這個難度提升很多,我們成功利用奈格爾線來處理這個研究項目,它顯著不同於圓內接同重心三角形。
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