Browsing by Issue Date, starting with "2013-02-14"

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WETTED WALL VENTURI SCRUBBER WITH A 2-STAGE VENTURI THROAT
(2013-02-14)
TSAI Chuen-Jinn
A venturi scrubber, which avoids clogging in the throat by dust particles, includes a venturi tube, two scrubbing fluid conduits and a scrubbing fluid tank. The venturi tube has a converging section, a diverging section and a throat section which is connected between the converging section and the diverging section. The scrubbing fluid conduit has a top end connected with the bottom end of the converging section of the venturi tube, and the scrubbing fluid conduit is connected with the scrubbing fluid tank. Thereby, scrubbing fluid can be guided directly into the scrubbing fluid tank without passing through the throat section. As a result, the clogging of dust particles on the converging section of the venturi throat can be minimized and the abnormal increase of the pressure drop of the throat can also be avoided.
METHOD FOR EXTRACTING THE FEATURE OF AN ABDOMINAL BREATHING AND A SYSTEM USING THE SAME
(2013-02-14)
Hsiao Tzu-Chien
;
Hsu Ju-Hsin
A method for extracting the feature of an abdominal breathing is disclosed, capable of extracting the feature of an abdominal breathing, without the requirement of a standard model of an abdominal breathing and the execution of a learning process being executed prior to the method for extracting the feature of an abdominal breathing. By means of computing a plurality of intrinsic mode functions corresponding to the abdominal breathing signal received, an Euler angle function and an instantaneous frequency function of each of the plurality of intrinsic mode functions, and comparing the plurality of instantaneous frequency function with a pre-determined zero-point threshold region, the method for extracting the feature of an abdominal breathing defines one of the plurality of instantaneous frequency function as an abdominal breathing feature function, which contains the feature of the abdominal breathing. In this way, the feature of an abdominal breathing is extracted.
TIME-TO DIGITAL CONVERTER AND DIGITAL-CONTROLLED CLOCK GENERATOR AND ALL-DIGITAL CLOCK GENERATOR
(2013-02-14)
Hsu Terng-Yin
;
Liao Yuan-Te
;
Su Kai-Shu
An all-digital clock generator includes a digitally-controlled clock generator and a processing unit. The digitally-controlled clock generator generates a clock signal in response to an enable signal and a digital signal. The processing unit has a frequency multiplier and a reference signal having a period, digitizes the period to generate a quantized signal, generates the digital signal according to the quantized signal and the frequency multiplier, and generates the enable signal according to the reference signal, the clock signal and the frequency multiplier.
METHOD FOR INHIBITING GROWTH OF INTERMETALLIC COMPOUNDS
(2013-02-14)
CHEN Chih
;
TU King-Ning
;
HSIAO Hsiang-Yao
The present invention relates to a method for inhibiting growth of intermetallic compounds, comprising the steps of: (i) preparing a substrate element including a substrate on which at least one layer of metal pad is deposited, wherein at least one thin layer of solder is deposited onto the layer of metal pad, and then carry out reflowing process; and (ii) further depositing a bump of solder with an appropriate thickness on the substrate element, characterized in that a thin intermetallic compound is formed by the reaction of the thin solder layer and the metal in the metal pad after appropriate heat treatment of the thin solder layer. In the present invention, the formation of a thin intermetallic compound is able to slow the growth of the intermetallic compound and to prevent the transformation of the intermetallic compounds.
MULTI-FILTER PM 10-PM 2.5 SAMPLER
(2013-02-14)
Tsai Chuen-Jinn
;
Liu Chun-Nan
A multi-filter PM 10-PM 2.5 sampler which enable the simultaneous collection of four PM 10 and four PM 2.5 samples is disclosed. The sampler is provided with a PM 10 impactor to remove coarse particles and operates at 33.4 L/min. After the PM 10 impactor, the aerosol flow is divided by half by a branch pipe. Half of the flow is directed into four PM 10 cassettes, while the other half is directed into four PM 2.5 cassettes after the aerosols are further classified by a PM 2.5 impactor. To ensure the aerosol flow uniformly passes through each of the four PM 10 or four PM 2.5 cassettes, an orifice plate is assembled behind each of the filter cassettes to increase the pressure drop, such that the flow rates of eight sampling lines are nearly equal.
MOVEMENT PREDICTING METHOD
(2013-02-14)
LIN Yi-Bing
;
Huang-Fu Chien-Chun
A movement predicting method is disclosed. The method utilizes at least one phone communicating in and moving between neighboring cells of base stations to predict population movement in a prediction interval. Firstly, obtain the traffic volumes in the cells generated by the phone and the handover information generated by the phone moving between the cells in a day. Next, calculate the traffic volumes and the handover information to obtain a movement probability for the population moving between the cells and an average residence time that the population stays in the region of each cell in the different periods of the day. Finally, according to the data obtained, predict an appearance probability that the population appears in each region at the end point of the prediction interval.
Delay Cell and Digitally Controlled Oscillator
(2013-02-14)
LEE Chen-Yi
;
YU Chien-Ying
;
YU Chia-Jung
A delay cell includes a first inverted transistor pair, a second inverted transistor pair and a plurality of delay units. The first inverted transistor pair is used to receive an input signal. The second inverted transistor pair is electrically cross-coupled to the first inverted transistor pair and cross-controlled by the first inverted transistor pair. The delay units are cascaded between the first inverted transistor pair and between the second inverted transistor pair, thereby providing a plurality of signal propagation delays sequentially, wherein the input signal is delayed for a pre-determined time by the first inverted transistor pair, the second inverted transistor pair and the delay units which are operated sequentially, thereby creating an output signal corresponding to the pre-determined time. A digitally controlled oscillator including the aforementioned delay cells is provided.
Modeling neurogenesis impairment in down syndrome with induced pluripotent stem cells from Trisomy 21 amniotic fluid cells
(2013-02-15)
Lu, Huai-En
;
Yang, Yao-Chen
;
Chen, Sheng-Mei
;
Su, Hong-Lin
;
Huang, Pai-Cheng
Down syndrome (DS), or Trisomy 21 (121) syndrome, one of the most common chromosomal abnormalities, is caused by an extra duplication of chromosome 21. In studies of neuron development, experimental models based on human cells are considered to be the most desired and accurate for basic research. The generation of diseased induced pluripotetn stem (iPS) cell is a critical step in understanding the developmental stages of complex neuronal diseases. Here, we generated human DS iPS cell lines from second trimester amniotic fluid (AF) cells with 121 by co-expressing Yamanaka factors through lentiviral delivery and subsequently differentiated them into neuronal progenitor cells (NPCs) for further analyses. 121 AF-iPS cells were characterized for the expression of pluripotent markers and for their ability to differentiate into all three germ layers by forming embryoid bodies in vitro and teratomas in vivo. The 121 AF-iPS cells maintained their unique pattern of chromosomal karyotypes: three pairs of chromosome 21. The level of amyloid precursor protein was significantly increased in NPCs derived from 121 AF-iPS cells compared with NPCs from normal AF-iPS cells. The expression levels of miR-155 and miR-802 in 121 AF-iPS-NPCs were highly elevated in the presence of low expression of MeCP2. We observed that 121 iPS-NPCs generated fewer neurons compared with controls. 121 iPS-NPCs exhibit developmental defects during neurogenesis. Our findings suggest that 121 AF-iPS cells serve as a good source to further elucidate the impairment neurogenesis of DS and the onset of Alzheimer's disease. (C) 2012 Elsevier Inc. All rights reserved.
Development of Ultrafast Spectroscopy and Reaction Mechanisms Studied by the Observation of Ultrashort-Life Species and Transition States
(2013-02-15)
Kobayashi, Takayoshi
;
電子物理學系
;
Department of Electrophysics
Based on the results of the present study, it is concluded that the first process in the photophysical dynamics in bR is the deformation of retinal configuration which decays within 30 fs near the C=N bond in the protonated Schiff base. It is followed by C=C stretching and then torsional motion of several periods around the C-13=Q(4) bond.
Mode-locked Nd: GdVO4 laser with graphene oxide/polyvinyl alcohol composite material absorber as well as an output coupler
(2013-02-15)
Wang, YongGang
;
Chen, Houren
;
Hsieh, Wenfeng
;
Tsang, YuenHong
;
光電工程學系
Graphene oxide/polyvinyl alcohol (GO/PVA) composite material saturable absorbers were fabricated. Sandwich structured GO/PVA absorber was used as an absorber as well as an output coupler in mode-locked Nd: GdVO4 laser. The laser pulses with the duration of 12 ps, repetition rate of 120 MHz and the maximum average output power of 680 mW were produced. (C) 2012 Elsevier B.V. All rights reserved.
Efficient high-energy passively Q-switched Nd:YLF/Cr4+: YAG UV laser at 351 nm with pulsed pumping in a nearly hemispherical cavity
(2013-02-15)
Huang, Y. J.
;
Tang, C. Y.
;
Tzeng, Y. S.
;
Su, K. W.
;
Chen, Y. F.
We originally utilize a nearly hemispherical cavity to accomplish the energy scale-up for a high-repetition-rate nanosecond pulsed pumped Nd:YLF laser passively Q-switched by the Cr4+:YAG saturable absorber. This compact laser is able to efficiently generate pulse energy as large as 1.38 mJ and pulse width as short as 5 ns under a pulse repetition rate of 100 Hz. Further employing the developed Nd: YLF laser to perform extracavity harmonic generations, the maximum pulse energies of 490 mu J at 527 nm and 360 mu J at 351 nm are achieved with the shortest pulse duration of 4 ns. (C) 2013 Optical Society of America
Using BCl3-Based Plasma to Modify Wet-Etching Pattern Sapphire Substrate for Improving the Growth of GaN-Based LEDs
(2013-02-15)
Lin, Bo-Wen
;
Niu, Chen-Yi
;
Hsieh, Cheng-Yu
;
Wang, Bau-Ming
;
Hsu, Wen-Ching
Wet-etching pattern sapphire substrates (PSS) have been used to grow GaN-based light-emitting diodes (LEDs). However, after wet etching, several sidewall facets are exposed on the patterns of PSS. These sidewall facets would grow zincblende GaN and form irregular voids. In this letter, BCl3-based plasma is used to solve this problem and improve the performance of GaN-based LEDs.
Near-infrared properties of Rh-doped Bi12TiO20 crystals for photonic applications
(2013-02-15)
Marinova, Vera
;
Liu, Ren Chung
;
Lin, Shiuan Huei
;
Chen, Ming-Syuan
;
Lin, Yi Hsin
The effect of Rh doping in Bi12TiO20 (BTO) crystals on the photosensitivity and recording speed at 1064 nm is reported. Response time of 0.1 s is measured during real-time holographic recording without any preliminary treatments. Once the crystal is pre-excited with a green light, the detected response time becomes 0.02 s. A possibility to implement BTO:Rh crystal plate with liquid crystals into a hybrid organic/inorganic device is demonstrated, which opens perspectives for further near-infrared applications. (c) 2013 Optical Society of America
Hypochlorous Acid Turn-on Fluorescent Probe Based on Oxidation of Diphenyl Selenide
(2013-02-15)
Liu, Shi-Rong
;
Wu, Shu-Pao
;
應用化學系
;
Department of Applied Chemistry
A BODIPY-based fluorescent probe, HCSe, has been successfully developed for the rapid detection of hypochlorous acid based on the specific HOCl-promoted oxidation of diphenyl selenide in response to the amount of HOCl. Confocal fluorescence microscopy imaging using RAW264.7 cells showed that the new probe HCSe could be used as an effective fluorescent probe for detecting HOCl in living cells.
Engineering Fungal Nonreducing Polyketide Synthase by Heterologous Expression and Domain Swapping
(2013-02-15)
Yeh, Hsu-Hua
;
Chang, Shu-Lin
;
Chiang, Yi-Ming
;
Bruno, Kenneth S.
;
Oakley, Berl R.
We reannotated the A. niger NR-PKS gene, e_gw1_19.204, and its downstream R domain gene, est_GWPlus_C_190476, as a single gene which we named dtbA. Heterologous expression of dtbA In A. nidulans demonstrated that DtbA protein produces two polyketides, 2,4-dihydroxy-3,5,6-trimethylbenzaldehyde (1) and 6-ethyl-2,4-dihydroxy-3,5-dimethylbenzaldehyde (2). Generation of DtbA Delta R+TE chimeric PKSs by swapping the DtbA R domain with the AusA (austinol biosynthesis) or ANID_06448 TE domain enabled the production of two metabolites with carboxylic acids replacing the corresponding aldehydes.
A case of rapid rock riverbed incision in a coseismic uplift reach and its implications
(2013-02-15)
Huang, Ming-Wan
;
Pan, Yii-Wen
;
Liao, Jyh-Jong
;
土木工程學系
;
Department of Civil Engineering
During the 1999 Chi-Chi earthquake (M-w = 7.6) in Taiwan, the coseismic displacement induced fault scarps and a pop-up structure in the Taan River. The fault scarps across the river experienced maximum vertical slip of 10 m, which disturbed the dynamic equilibrium of the fluvial system. As a result, rapid incision in the weak bedrock, with a maximum depth of 20 m, was activated within a decade after its armor layer was removed. This case provides an excellent opportunity for closely tracking and recording the progressive evolution of river morphology that is subjected to coseismic uplift. Based on multistaged orthophotographs and digital elevation model (DEM) data, the process of morphology evolution in the uplift reach was divided into four consecutive stages. Plucking is the dominant mechanism of bedrock erosion associated with channel incision and knickpoint migration. The astonishingly high rate of knickpoint retreat (KPR), as rapid as a few hundred meters per year, may be responsible for the rapid incision in the main channel. The reasons for the high rate of KPR are discussed in depth. The total length of the river affected by the coseismic uplift is 5 km: 1 km in the uplift reach and 4 km in the downstream reach. The downstream reach was affected by a reduction in sediment supply and increase in stream power. The KPR cut through the uplift reach within roughly a decade; further significant flooding in the future will mainly cause widening instead of deepening of the channel. (C) 2012 Elsevier B.V. All rights reserved.
具有環狀排列微生物載體之廢水處理方法與裝置
(2013-02-16)
黎德明
;
江明桂
;
陳金得
;
宋耿全
;
林志高
一種廢水處理方法與裝置，是於一反應槽中設置多數環狀排列之載體供微生物附著生長，反應槽中可分成一上反應區、一通道區以及一下反應區，通道區是被這些載體所圍繞，而且連通上、下反應區，微生物包含有自營性脫硝菌，而可產生Anammox反應將廢水中之NH4 + 以及NO2 - 轉換成氮氣，從而達到去除水中總氮之目的；由於載體能夠避免過多微生物隨著放流水排出反應槽，而將微生物儘可能地保留於反應槽內部，故此一廢水處理方法與裝置具較佳之處理效率。
多濾紙ＰＭ１０－ＰＭ２．５採樣器
(2013-02-16)
蔡春進
;
劉俊男
一種多濾紙PM 10-PM 2.5採樣器，可同時進行四組PM 10微粒樣本以及四組PM 2.5微粒樣本的採集，採樣器是使用一PM 10慣性衝擊器作為入口，採樣氣流通過PM 10慣性衝擊器後是被一分歧管分成兩等分，一部分之氣流被導入四組PM 10濾紙匣之中，而一部分之氣流則是在通過一PM 2.5慣性衝擊器之後，再被導入四組PM 2.5濾紙匣；為確保氣流均均地通過這些濾紙匣，每一組濾紙匣後端都設置一流孔板，以便提高每一採樣通道之壓損，從而使每一採樣通道之流量接近相同。
延遲元件及數位控制振盪器
(2013-02-16)
李鎮宜
;
余建螢
;
游佳融
一種延遲元件包含第一反相電晶體對、第二反相電晶體對以及複數個延遲單元。第一反相電晶體對用以接收輸入信號。第二反相電晶體對交錯耦接第一反相電晶體對，並由第一反相電晶體對交錯控制。延遲單元分別疊接於第一反相電晶體對之間以及第二反相電晶體對之間，用以提供連續之複數個信號傳遞延遲，其中輸入信號藉由第一反相電晶體對、第二反相電晶體對與延遲單元依序操作而延遲預設時間，以產生相對應預設時間之輸出信號。一種數位控制振盪器亦於此揭露。
腹式呼吸特徵萃取方法及使用此方法的腹式呼吸特徵萃取系統
(2013-02-16)
蕭子健
;
徐如欣
本發明揭露一種無需使用一腹式呼吸標準模型，且一受測者亦無需接受一學習程序，便可萃取出此受測者之腹式呼吸特徵的腹式呼吸特徵萃取方法。藉由運算出對應至其所讀取之腹式呼吸訊號的複數個內在模式函數的方式，本發明之腹式呼吸特徵萃取方法接續運算出各內在模式函數的一尤拉角函數及一瞬時頻率函數。隨後，這些瞬時頻率函數便依序與一預先設定之零點臨界值範圍互相比較，且依據比較所得之結果，本發明之腹式呼吸特徵萃取方法萃取出其中一個瞬時頻率函數作為一腹式呼吸特徵函數。如此，此受測者之腹式呼吸特徵被可被萃取出來。