本研究乃針對一般常有之分離式冷氣，做無段變頻控制（A.F.C），與管路系統調整。提高運轉效能，並可避免因外氣變化造成之冷凍能力下降，達到節能、省電、低成本效果。有別於現有冷氣變頻方法，改採M.I.O 控制方式： （1）、以溫控器－變頻器，調整冷媒流速，（2）、藉新式感溫膨脹閥，調整冷媒流量，內外交攻，達到系統內冷媒維持恆溫、恆壓之最大效能。於恆溫、恆濕室內，經適切設定調整與配合實證比較之後，可知改良疾風變頻冷氣較同型分離式冷氣機：1. 省能-----能源效率比（EER）值可提高至 3.62，節省電費48％，(且較同容量變頻冷氣高)。2.恆壓----壓力變動平順，變動率(S.R)低於3%。3.恆溫----冷房效果快於一般冷氣50%。

夏天到海邊游泳看到大輪船在海面行駛得很穩，但撿起一塊石頭往水裏一放就沈下去了，再從水裏拾起邢塊石頭覺得比剛剛輕了，所以我就想到兩個問題請教老師：1.大輪船為什慶會浮？小石子反而下沉？2.在水中拿東西為什麼比較輕?

由4x3的方塊中，在缺一方格下計算總方格數的挑戰為起點，我試著探討在缺塊n x n的正方形中總方格數和 任取一個位置方格(x,y) 或 任取出二個橫向位置方格[(x,y),(x,y+1)]、縱向位置方格[(x,y),(x+1,y)] 後之規律性及函數的關係，如下圖所示。並定義在未缺塊的正方形中，總方格數為C(n)，且C(n)=Σk2。 研究結果顯示，其函數式經由二種規律性 (A)一般性及 (B)遞迴性 求得，結果如下: 一、 任取一個位置方格(x,y)之總方格數二、 任取二個橫向位置方格 [(x,y),(x,y+1)] 或 縱向位置方格[(x,y),(x+1,y)] 之總方格數

The purpose of our experiment is to analysis a specific ring shaped airplane called 'Round Wing' to know its characteristic. We've done several experiments to find its characteristics.\r First, Unlike other airplanes, Round Wing needs little time to recover its stability by comparing duration of flight.\r Second, as the eccentricity of the ring increase from 0.5 to 0.95, the stability and duration of flight are increased too. Also the size of body increase 1, 2, 3 times, the duration of flight is increased to 184%, 204%, 222%.\r Third, when Round Wings are attached each other by 2, 3, 4 they flew with high stability than before and stayed in the air much longer.\r Conclusion, Round Wing has unique characteristic (like high stability, and long duration of flight). And if additional power plant added, it can stay in the air very long. Also it can be used for leisure, patrol, broadcasting, and geological purposes.

台灣汽機車密度居世界之冠。汽機車排放之直接與間接形成懸浮微粒與臭氧，為都會區空氣主要污染物，並危害民眾健康，相關議題亦是全球關注的焦點。在法令規範未達一定成效時，戴口罩為保護呼吸道簡易的方式。口罩款式甚多，民眾認知甚少。本研究利用手持式粒子計數器、掃描式氣動粒徑分析儀與分光光度計等儀器，量測各式口罩對懸浮微粒與臭氧的攔截效率。結果得知機車廢氣之懸浮微粒主要粒徑落於「最易穿透粒徑」範圍，粒子不易攔截又易深入肺泡造成傷害。研究發現熔噴不織布層為口罩高攔截效率之關鍵因素，清洗後，短期效率無明顯下降，但因結構破壞仍需更換，藉此我們組合出高效率且可替換內層的布口罩。本研究結果可做為民眾選擇口罩之依據。

本校於六十年一月一日設立兒童氣象觀測教學園地以來，至今已有三年多的觀測紀錄資料，現在將三年來，所觀測的資料互相比較分析一下，就可發現本區氣候的一般現象，足以對以農為生的本社區：區民眾貢獻一些意見或找到一些問題。

PURPOSE: The purpose of making an Inverter which gets charged with the help of sound energy, produced by speakers for instance, and regenerative shock absorbers which are used in cars so that we can easily charge the inverter with the help of sources which we use in daily life. PROCEDURE: The regenerative shock absorbers are capable of generating electricity when a car moves over bumps. It works by hydraulic fluid passing through a turbine. When the fluid passes through turbine, the turbine turns a small generator and more power is created. A piston is disposed for reciprocating motion within a cylinder as a vehicle’s suspension system deflects. Hydraulic fluid passes through a hydraulic motor to turn its shaft. The hydraulic motor shaft is connected to an electric generator to generate electricity. The second source of energy to charge the inverter is by the help of sound produced in day to day life. Some piezoelectric sensors attached to the board as soon there is a tap or any kind of vibration on the board these and convert them to electrical signals. This means that parasitic energy of busy roads, railroads, footpaths and runways near population centers can be converted into electrical energy that can run public lighting, or fed back into the grid. DATA: The data which have been collected with some experiments is that on an average piezoelectric can produce 330W of power. • When sound pressure is around 62 dB, the frequency is of 102 Hz. • Sound pressure is of 65 dB the frequency is of 500 Hz. Another case when the regenerative shock absorbers come in contact with the piston it produces an average power of 340W-350W. CONCLUSION: With the use age of piezoelectric sensors and regenerative shock absorbers we can produce electricity at a very low cost for inverters; these inverters can provide electrical supplies to the house. The most important reason to make such kind of innovation is one because it is money efficient, second this can come in handy for those who can’t afford to buy inverters at a very high cost and then when charging these inverter these people have to use their electrical supply!

本實驗為製備「第三代光敏染料太陽能電池」之最佳化，並研究出「奈米級光敏染料太陽能漆」。比較七種花青素染料對於太陽能漆之影響，加入同樣具有光電效應的不同形狀奈米銀粒子，藉由照射各種光源與改變照射時間的長短，測定其電壓、電流並計算其轉換率。研究所得到的「奈米級光敏染料太陽能漆」，比較其正、負極條件不同之影響，所得到的實驗轉換率可高達1.43×10-2%。

關於平面上若干點的集中度之定義，一直很少有人予以仔細的探討，因為判別的方法有很多種。本研究是以平面上三點所構成的三角形之三頂點作討論，分別以三角形的面積、周長，內心、外心和重心至三頂點距離，三點的標準差及平均差的概念，作為不同的判別方式，並以動態幾何化版ＧＳＰ模擬不同的判斷方法做為研究，在利用統計學上的方法，找出哪一種定義方式最為適合、誤差最少的判斷方法。There are many ways to determine the centralness of three dots on a plane; however, no definition study has been applied. In this study, we focus our interests on the entralness of three vertices of a triangle formed from three dots on a plane. Various methods such as the relationship of area, and the distance of the triangle to the centralness of three dots, the distance from the interior point, exterior point, the barycenter to the vertices of triangle, and the standard error and differences average obtained from three dots were determined with a dynamic geometry software GSP, and a statistic method was used to find a least error way to determine the centralness of three dots on a plane.

常我們遇到形如 x+2y+3z≦10 的不等式，而欲求其非負整數解的組數時，我們習慣的解法是：令 z=0 得x+2y≦10，共有( 0 ,0 , 0 ) , ( l , 0 , 0 ) , ( 2 , 0 , o )，…… 及 ( 2 , 4 , 0 ) , ( 0 , 5 , 0 )等 36 組非負整數解。 z = 1 得 x +2y≦7 ，共有( 0 , 0 , 1 ) , ( l , 0 , l ) , ( 2 , 0 , l )，…… 及 ( 0 , 3 , l ) , ( l , 3 , l ）等20組非負整數解。z= 2 得 x + 2y≦4 ，共有（ 0 , 0 , 2 ) , ( l , 0 , 2 ) , ( 2 , 0 , 2 ) ， …… 及 ( 2 , l , 2 ) , ( 0 , 2 , 2 ）等 9 組非負整數解。z = 3得 x + 2y≦l ，共有（ 0 , 0 , 3 ）及（ 1 , 0 , 3）等 2 組非負整數解。故合計有 36 + 20 + 9 + 2 = 67組非負整數解，這種解法主要是利用平面z = 0 ，…，z = 3 來逐點截取合適的解，它的精神由下圖（在坐標平面IR 2上）可以明白的表示出來，因此我們稱這種解法為“逐點截取法”。但是，一但n=1000 ，甚至更大，或是一般自然數 n ，如何用逐點截取法一點一點去取？顯然，它是繁瑣得令人厭煩！於是我們幾位同好就著手研究這個問題，希望能從中得到一個較為簡便的方法，下面就是我們的研究過程，請各位老師、先進指導。

細胞脂肪分化是造成肥胖、骨質疏鬆、和糖尿病的重要前置因素。我們若要維持良好身材又想省去減肥藥的問題，那麼我們必須了解造成脂肪化的原因，才可能擁有好的預防之道。利用人類骨髓間質細胞可以分化成骨質與脂肪等細胞的特性，我們研究氧化壓力對間質細胞\r Ras基因轉換表現後骨質與脂肪分化的影響。結果發現以添加超氧根 (O2-，l5nM)形成氧化壓力，可促進正常Ras基因表現的間質細胞朝骨質分化;相反地，超氧根會促進\r Ras基因突變而不表現的細胞，朝向脂肪分化的現象。進一步研究其作可原理，發現氧化壓力可促進 RaS蛋白質啟動細胞外訊息活化酵素(ERK)，接著驅動骨質轉錄因子(CBFA1)表現，再到骨鈣蛋白質與骨結節形成。而抗氧化酵素(超氧根轉化酵素;SOD,5OOU/ml)的作用，可以抑制正常Ras基因細胞氧化壓力下骨質分化的進行;但不能防止氧化壓力促進Ras基因突變細胞，朝向脂肪分化的作用。總結而言:Ras基因的表現與否，是決定脂肪分化的關鍵切換點;也是影響氧化壓力對間質細胞朝骨質分化的樞紐。這種基因與氧化壓力互動影響骨質與脂肪分化的剖析，將有助於提醒人們:使用抗氧化劑來調節抗衰老、肥胖、和美容時，必須是在不同情況和不同基因體質的人，有所不同。 \r Human\r mesenchymal stem cells are able to differentiate into bone, muscle, cartilage or\r fat tissues. Our preliminary study with human mesenchymal cell line (HS-5) showed\r that HS-5 cells could differentiate to bone, cartilage and muscle but not fat cells\r as determined by histochemical staining of phenotypes. We have further studied the\r influence of oxidative stress on the switch between bone and fat cell differentiation.\r Results showed that oxidative stress started with exogenous superoxide, produced\r by the interaction of xanthine oxidase and hypoxanthine, promoted the differentiation\r of osteogenic lineage showing expression of osteocalcin and bone nodule formations.\r The mechanism was investigated and superoxide was found to induce ERK (extracellular\r regulated signal kinase) activation; and then the expression of osteogenic specific\r transcriptional factor (CBFA1). A plasmid containing ras-mutant (Ser 17 Asn) which\r can inactivate the expression of ERK was transfected into the HS-5 cells for studying\r the influence of oxidative stress on ras-mutated mesenchymal cells. Surprisingly,\r it was found that oxidative stress did not promote osteogenesis but it enhanced\r adipogenesis from the ras-mutated HS-5 cells. Further studies indicated that superoxide\r neither induced ERK activation nor CBFA1 expression, but it did enhance expression\r of adipogenic specific transcriptional factor (C/EBPα) and lipoprotein lipase in\r the ras-mutated mesenchvmal cells. Taken together, the study model to induce the\r bone cell differentiation from human mesenchymal stem cells may be employed to make\r bone cells for tissue engineering.

聚苯胺導電高分子的發展蓬勃迅速，其應用也愈趨廣泛，金屬防蝕為其可能應用之一。台灣四面環海，工業發達，造成金屬腐蝕損害嚴重。本文為探討聚苯胺導電高分子在鐵系金屬防蝕上之應用，針對以下各點進行研究： ( 1）探討導電高分子聚苯胺性質與合成方法（2）探討聚苯胺導電原理（3）測試不同腐蝕條件下聚苯胺的防蝕效果（4）探討聚苯胺防蝕原理（5）各種氧化還原態聚苯胺防蝕效果之比較。實驗結果顯示塗布聚苯胺與未塗布聚苯胺之鐵系金屬（生鐵、不鏽鋼、鍍鋅鐵）在 3 ％氯化鈉、 0 . 5M 鹽酸、1M 鹽酸溶液中之腐蝕狀況，以鹼式中問氧化態聚苯胺（ Emeraldine base 。）最具防蝕效果。聚苯胺防蝕機構包含阻隔防護、腐蝕抑制劑、陽極保護、惰性化、形成保護性氧化物薄膜、阻礙離子擴散速率、電化學介面遷移等機構 ·The development and application of the conducting polymer polyaniline is getting prosperous and popular. One of the applications is corrosion protection. Because Taiwan is surrounded by sea and the pollution of industry is more and more serious than before the damage of corrosion is greater and should be properly controlled. In this paper, the authors attempted to study the effect of the corrosion protection of polyaniline in ferrous metal. This study could be divided into four parts: (1) the study of the property and synthesis methods for the conducting polymer polyaniline, (2) the conduction theory of the polymer polyaniline, (3) The corrosion protection effects of the polymer polyaniline under different corrosion situations, (4) the corrosion protection theory of the polymer polyaniline, and (5) the comparison of the corrosion protection effects of various polymer polyanilines. According to the experimental results the Erneraldine-based polyaniline gets the best corrosion protection effect. The mechanism of corrosion protection may be the result of the following ones: barrier protection, corrosion inhibitor, anode protection, innobeling, chemical active layer. inhibition of diffusion rate, and the shift of electrochemical interface.