「蓮」「環」密碼--環境因子對蓮花效應的影響
蓮花效應是指蓮葉表面具有奈米纖毛結構,因此只要葉面稍微傾斜,水珠就會滾離葉面,在我們生活週遭,許多植物具有蓮花效應。本實驗選擇彩葉山漆莖作為研究材料,因為我們發現在同一植株上,嫩葉的蓮花效應最佳,而老葉幾乎無蓮花效應。當彩葉山漆莖的新葉轉為老葉,蓮花效應會減弱,甚至消失。我們以不同水量、土壤酸鹼值及光照作為變因,來探討蓮花效應改變的原因,結果發現水量並非主要影響蓮花效應改變的變因;土壤過酸或過鹼,會減弱新葉及嫩葉的蓮花效應;置於暗室則使整株彩葉山漆莖所有葉面皆無蓮花效應。許多植物的性狀,在老化或面臨環境改變時,會將控制性狀的基因開啟或關閉。因此,我們推論,當環境因子改變時,植物的蓮花效應可能是經由基因層次的調控,藉以增強或減弱此性狀的表現。如果不是基因的開啟或關閉,則有可能僅是葉表面的結構發生些微的改變,真正詳細的機制仍有待進一步的確認。;We choose Breynia nivosa (Bull ex W. G. Smith) Small as a model plant to study the lotus effect on the leaves for the reason that on the same chosen plant the new-born leaves have the best lotus effect while the elder ones have little lotus effect. When the new leaves turns into elder ones, the lotus effect also turns weaker or even vanishes. To explore the exact mechanisms, we take water quantity、soil pH、and light density as the experimental factors. The results show that water quantity cannot affect the lotus effect on all leaves, change in soil pH can decrease the lotus effect on the new and new-born leaves, and dark treatments can eliminate the lotus effect on all leaves. When the environments change, the phenotypes of plants could also be changed to adapt to the new conditions by turning on or off genes. Therefore, we suggest that the lotus effect on the leaves is also controlled by genes to increase or decrease its phentype so as to adapt to the changing environments. If not, it may simply be a little change of the surface structure of the leaves. The detailed mechanism remains to be confirmed further.
藉由lotus effect 之原理來探討超疏水性表面的製備
超疏水表面(superhydrophobic surface)因其自我清潔效果在近年來引起廣泛的研究及探討,目前世界各大公司皆積極投入自潔性產品(超疏水表面)的研發,但是截至目前為止除了塗料及織物有產品外,其他尚在研發階段。降低表面能及增加表面粗糙度為製作超疏水性表面的兩種方法。本實驗我們針對使用不同方法去仿照自然界植物「蓮花效應」,將二氧化矽粒子適當的分佈在基材表面,以增加粗糙度,製造出超疏水性表面。我們發現鍛燒會使其二氧化矽粒子黏聚在一起,對接觸角的增加無幫助。而在溶膠凝膠的配置過程中直接加入OTS(Octadecyltrichlorosilane),並利用光散射儀比較二氧化矽奈米顆粒的平均粒徑及粒徑分佈隨時間變化的情形,一段時間後發現會有明顯大顆粒沉澱,塗佈在玻璃基材表面後容易脫落,不適合往後實驗或其他用途。而以氨水催化的溶膠凝膠以不同流速滴入TEOS (Tetraethylorthosilicate,四乙氧基矽)對接觸角的影響也不大。最後我們利用砂紙在基材表面上刷磨,可以使二氧化矽粒子分佈均勻,明顯增加接觸角。塗佈速率的改變搭配疏水性矽烷單分子膜的改質,我們已可以製造出159°的超疏水性表面。Superhydrophobic surfaces are generally made by lowering the surface energy and increasing the surface roughness. In this experiment, we use different methods of spreading silicon dioxide nanoparticles properly on the surface in order to increase the surface roughness and also make superhydrophobic surfaces. In the beginning, we find that the calcinations can cause its silicon dioxide nanoparticles to stick together instead of increasing the contact angles. Then, add OTS (Octadecyltrichlorosilane) directly to manufacture process of sol-gel, and observe the situations of the average length and the spread of silicon dioxide nanoparticles with the time goes by. After a period of time, we will discover that many obvious big particles deposit and spin-coating on the glass surfaces flop easily. Hence, this phenomenon is n’t proper for the following experiments or other uses. However, the contact angles have nothing to do with dropping the sol-gel catalyzed ammonia to TEOS(Tetraethylorthosilicate) by different flowing rates. Finally, it is crucial for us to use the sandpapers to brush on the surfaces because it may cause the silicon dioxide nanoparticles to spread well and obviously increase the contact angles. Combining the silicon dioxide surfaces with the change of spin-coating rate and the cover with hydrophobic SAM, we have made the superhydrophobic surfaces of 159°.
Nareez mall
The Project applicant proposes to develop fahaheel Beach by constructing a mall. This mall will be incipience and unique in Kuwait. The mall is divided to three parts; first part includes shops, Reception, Entertainment areas (cinema, beauty center, gymnasiums), Second part involved a food court for customers who want to stay for long time in the mall., Last part includes outdoor playgrounds, and out door game courts(tennis, foot ball, hand ball, basket ball), out door coffee shop. The intended goal of this project is to provide high quality, cost-effective, unique experiment of shopping and fishing services in accordance with global standards of excellence. Work. The Main task of the preliminary design phase was to balance the equation of any investment commercial project which is to provide a design that serves as an attraction spot for investors, shoppers and visitors. The design of this mall was based on the latest technology and techniques which helped in achieving the desired concept. It has been designed using the highest standards and finest finishing material whether internally or externally. The fine quality of material and high solar performance glass will help in minimizing the electrical load by decreasing the air conditioning load required. All material has been chosen to suit the image and quality to be resembled in the mall and the tower will turn out to be a master piece that has utilized newly introduced up to date building technical installation. The mall will provide a full service of shopping and entertainment facility covering over10,500sq.meter op space within this space are dedicated areas for fitness health, recreation, spa social, dining, entertainment, childcare and beach.
牛魔王的故鄉-台東利吉惡地之探討
本研究針對利吉惡地進行探討,研究此區之泥岩含水量、有機質含量、pH值、比重、可溶性陽離子含量、滲水特性和該區之植物種類,並探討坡度、水量對沖蝕率、山脊密度和溝痕形成之影響。 研究結果發現: 一、表層泥岩之含水率較高,深層泥岩最低。中層泥岩之有機質含量較高,表層與深層泥岩較低。各層泥岩pH值約8.1;無植被採樣點之 pH較高,有植被採樣點偏中性。有植被採樣點,其 Ca2+含量較高。 二、此區共發現十九種植物,其中銀合歡、相思樹屬優勢種。 三、坡度增加時,沖蝕率亦增加;水量增加時,沖蝕率、溝痕寬度也隨之增加,兩者呈高度正相關。第一區坡度較緩,山脊密度較大,第二區坡度較陡,山脊密度小,表面較平坦,溝痕較淺。Our research discusses with the contents of water in mudstone, the organic content, pH, the specific weight, the contents of dissoluble cation, dankness and the category of plants in Ligiligi Badland. Dissecting it`s slope, the abrasion of water, the density of mountain ridge and the formation of scuff mark. Outcome of our research: 1.Solum of mudstone is the dampest. Intermediate of mudstone has more organic content than others. Every bed of mudstone`s PH is 8.1. Having plants area is indifferent and having more Ca2+.2.We found nineteen categories of plants. For example Leucaena glauca and Taiwan acacia. 3.The more augmentation of gradient,the more increase of the abrasion of water and the breadth of the density and the abrasion of water too.
利用奈米色料製作彩色蠶繭之研究
由於奈米科技進步,奈米材料應用在產業上具有多功能的性質。本研究使用不同波美度的色料餵食家蠶,以找出最佳的彩色蠶繭色澤,並研究其如何影響家蠶所結出的蠶繭及色料附著在蠶繭上的絲。同時對色料附著的蠶繭進行水洗、光照、微結構的觀察,以試圖找出色料與波美度之最佳組合參數。由本實驗結果得知,利用奈米色料溶液60 ml,在紅色:1.048、藍:1.058、黃:1.039 的參數下,混合飼料30g,可獲得最佳的彩色蠶繭結繭成功率、均勻度較佳、耐褪色與耐洗滌等優點,並且可獲得表面結構光滑且較細的絲徑,約為19.87μm。相對的,一般色料粒徑為微米級,色彩度優於奈米色料,但表面結構較奈米色料粗糙且線徑較粗,約為21.51μm,易於褪色及不耐洗滌。 Because of the great progress of nano-technology, it has the quality of multi-functions to make use of nano-materials on industrial property. The purpose of this study is to find the best colored silkworm cocoons by mixing different consistency of pigments to feed silkworms. At the same time, this study wished to explore how the different consistency of pigments influenced the silkworm cocoons that the silkworms produced. Besides, in order to find the better association between pigments and Baume degrees, this study exposed the cocoons under different lights, washed with different detergents and take observations of micro-structure of the cocoons. The results of this study are as follows: using the nano-pigments 60 ml in different density, that is, red:1.048, blue:1.058, and yellow:1.039, then mixed them with silkworms’ forage 30g , in this way, best successful ratio to get colored cocoons, desired high visual effects in color, well distribution, long duration and strong resistance to detergents agents are obtained. In addition, we can still get glossy appearance and fine cocoons; the wire diameter is about the size of 19.87μm. On contrast, feeding with the ordinary pigments, the degree of colored silk is better than feeding with the nano-pigments, but the appearance of cocoons are rough and the wire diameter is about the size of 21.51μm.
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
挑戰溶液的電中性~「帶電溶液的研究」
利用范式起電器將靜電導入蒸餾水、甘油、苯、環己烷、乙醇、正丙醇、正戊醇,以及HCl(aq)、NaCl(aq)、CuSO4(aq)……等不同溶液中,我們發現:非電解質溶液可以藉由極性分子的媒合作用"貯存”電子,而其中H2O效果最好,即水合電子是可以穩定存在的!但在水中若添加HCl、NaCl等電解質會提高容易導電性,以致於無貯存電子的效果。我們也發現苯雖不是極性分子,但因具有π共振系統,也能有效貯存電子。另外,從引入密度泛函數理論結合類導體可極化連續模型加以計算的結果,也能發現極性分子容易的溶劑電子親核能比非極性分子容易來的大,與實驗結果吻合。By using a Van de Graff Generator to put electrons into various solutions or solvents (such as water, alcohol, benzene, propyl alcohol, solutions of sodium chloride, etc.), we find out that nonelectrolytes can "store" electrons through hydration of polar molecules. And water has the best ability of keeping electrons among others. In other words, hydrated electrons can exist stably. However, if we add electrolyte into solvent, the solution won't store electrons because of its increasing electric conductivity. The experiment also shows that benzene can keep electrons though it is a nonpolar molecules. We infer that it is the " π resonance system " which contributes to its high ability of electron storage. In addition, by introducing the calculations of CPCM (Conductor-Like Polarizable Continuum Model), we find out that the electron affinity of polar solutions are stronger than those of nonpolar solutions. The computed results are in agreement with our experiment.
費氏蛇
At the website “MathLinks EveryOne,” we found a problem “Snakes on a chessboard,” which was raised by Prof. Richard Stanley. The following is the problem. A snake on the m n chessboard is a nonempty subset S of the squares of the board with the following property: Start at one of the squares and continue walking one step up or to the right, stopping at any time. The squares visited are the squares of the snake. Prove that the total number of ways to cover an m × n chessboard with disjoint snakes is a product of Fibonacci numbers. We call the total number of ways to cover a chessboard with disjoint snakes “the snake-covering number.” This problem hasn’t been solved since it was posted on September 18, 2004, so it aroused our interest to study it. First, we used the way in which we added each block to the chessboard, and therefore we discovered some regulations about the snake-covering number of the1 × n , 2 × n and 3 × n chessboard. Through “recursive relation” and “mathematical induction”, we proved the general term of the snake-covering number of the1 × n , 2 × n and 3 × n chessboard. In the following study, we found a key method in which we added a group of blocks to the chessboard. Finally, we proved the general term of the snake-covering number of the m × n chessboard. Also, we discovered the way to figure out the snake-covering number of the nonrectangular chessboard.在網站“ MathLinks EveryOne ”中,我們找到了一個有趣的問題“棋然上的蛇” ( Snakes on a chessboard ) ,這個問題是由教授 Richard Stanley 所提出。問題如下:在m x n棋盤形格子上,蛇由任意一格出發,但蛇的走法只能往右 → ,往上↑,或停住 ‧ 若此蛇已停住,將由另一條蛇來走,且不同蛇走過的格子不可重疊”證明:將 m × n 棋盤形格子完全覆蓋的總方法數為費氐( Fibonacci )數列某些項的乘積。我們將把棋盤形格子完全覆蓋的所有方法數稱之為“蛇填充數” 由於這個問題自從 2004年 9 月 18 日被登在網站上後,還沒有人提出解答,於是引發了我們研究的興趣。首先,我們使用了將一個一個格子加到棋盤上的方法,並發現了 l × n 、 2 x n、 3 × n 棋盤形格子蛇填充數的一些規律。我們使用遞迴關係及數學歸納法來證明 l x n 、 2 x n , 3 × n 棋盤形格子蛇填充數的一般項。在接下來的研究中我們發現一個特別的方法,一次增加數個方塊 ‧ 最後我們證明了,m x n, ,棋然形格子的蛇填充數的一般項 ‧ 而且,我們也找到如何求出不規則棋盤形格子的蛇填充數。
甲醇氧化物對直接甲醇燃料電池發電效能的影響
The purpose of this paper is to study the roles of formic acid and formaldehyde playing in the Direct Methanol Fuel Cells(DMFCs).The assumption is now widely accepted that the Oxidation-reduction intermediate of cell like formic acid and formaldehyde will hinder the reaction of DMFCs. At first, we recorded data which measured the efficiency of DMFCs working under the different temperature of fuel, then we recorded data which measured the efficiency of DMFCs working under the different consistency. In the end, we compared the data we recorded before and chose the best reaction environment as standard environment for the future experiment. Then we discover intermediate has positive effect on DMFCs. we separately put formic acid and formaldehyde into fuel, and we discover the efficiency is better than\r before. For example, the volt stability and volt intensity of DMFCs are better. The above conclusion is mainly based on open current volt, equally volt and electric current density which is the standard of evaluation.本實驗主要探討甲酸、甲醛等雜質在直接甲醇燃料電池中扮演的角色,一般認為甲酸等是甲醇在電池中反應的中間產物,大多數人認為這些中間產物會阻礙燃料電池的反應。而我們先針對了甲醇在各種溫度下電池的效能先做出了圖表,並使用不同濃度的甲醇燃料來測量電池的效能並與之前溫度的圖表做比較,選出最合適的直接甲醇燃料電池反應環境作為添加雜質實驗的標準環境。接下來我們在研究過程中發現,其實中間產物可能對電池有正面的效果,我們發現甲酸、甲醛等對直接甲醇燃料電池的電源輸出有正面的影響,例如電壓穩定性與電壓強度的增強。在研究中,我們將甲酸等加入燃料電池的燃料(甲醇)內,模擬甲醇因不當保存而產生的雜質,針對添加物的濃度做些調整,以電池的開路電壓(OCV)、平均輸出電壓、以及單位面積的電流密度作為評比電池效能的標準,並找出甲酸等對燃料電池效能的影響,並進一步找出最適合的電池燃料配置。