다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

[신간의 별자리x] 우리/미술, 그리고 ‘슬픔의 박물관’

Deposits of clastic carbonate-dominated (calciclastic) sedimentary slope systems in the rock record have been identified mostly as linearly-consistent carbonate apron deposits, even though most ancient clastic carbonate slope deposits fit the submarine fan systems better. Calciclastic submarine fans are consequently rarely described and are poorly understood. Subsequently, very little is known especially in mud-dominated calciclastic submarine fan systems. Presented in this study are a sedimentological core and petrographic characterisation of samples from eleven boreholes from the Lower Carboniferous of Bowland Basin (Northwest England) that reveals a >250 m thick calciturbidite complex deposited in a calciclastic submarine fan setting. Seven facies are recognised from core and thin section characterisation and are grouped into three carbonate turbidite sequences. They include: 1) Calciturbidites, comprising mostly of highto low-density, wavy-laminated bioclast-rich facies; 2) low-density densite mudstones which are characterised by planar laminated and unlaminated muddominated facies; and 3) Calcidebrites which are muddy or hyper-concentrated debrisflow deposits occurring as poorly-sorted, chaotic, mud-supported floatstones. These

Phd by thesis

Vegetation Indices (VIs) obtained from remote sensing based canopies are quite simple and effective algorithms for quantitative and qualitative evaluations of vegetation cover, vigor, and growth dynamics, among other applications These indices have been widely implemented within RS applications using different airborne and satellite platforms with recent advances using Unmanned Aerial Vehicles (UAV) Up to date, there is no unified mathematical expression that defines all VIs due to the complexity of different light spectra combinations, instrumentation, platforms, and resolutions used Therefore, customized algorithms have been developed and tested against a variety of applications according to specific mathematical expressions that combine visible light radiation, mainly green spectra region, from vegetation, and nonvisible spectra to obtain proxy quantifications of the vegetation surface In the real-world applications, optimization VIs are usually tailored to the specific application requirements coupled with appropriate validation tools and methodologies in the ground The present study introduces the spectral characteristics of vegetation and summarizes the development of VIs and the advantages and disadvantages from different indices developed This paper reviews more than 100 VIs, discussing their specific applicability and representativeness according to the vegetation of interest, environment, and implementation precision Predictably, research, and development of VIs, which are based on hyperspectral and UAV platforms, would have a wide applicability in different areas

/pdf/significant-remote-sensing-vegetation-indices-a-review-of-4szax6zlwz.pdf

Significant remote sensing vegetation indices: A review of developments and applications

13. 벼잎선충의 약제처리 방법별 방제 효과

We demonstrate a passively harmonically mode-locked soliton Erbium-doped fiber laser (EDFL) with low pumping threshold using single-walled carbon nanotubes (SWCNTs) embedded in poly ethylene oxide (PEO) thin film as a passive saturable absorber. The film with a thickness of 50 m was fabricated using a prepared homogeneous SWCNT solution with 0.1 loading percentage, which was mixed with a diluted PEO solution and casted onto a glass petri dish to form a thin film by evaporation technique. The film is sandwiched between two fiber connectors to construct a saturable absorber, which is then integrated in an EDFL cavity to generate a stable passive mode-locking of a soliton laser operating at 1560 nm at the 4th, 7th, and 15th harmonic of fundamental cavity frequency when the pump powers of 1480 nm laser diode are 14.9, 17.5, and 20.1 mW, respectively. The 4th harmonic pulses are characterized in detail with a repetition rate of 44.84 MHz, a transform-limited pulse width of 1.19 ps, side-mode suppression ratio of larger than 20 dB and pulse energy of 9.14 pJ. (c) 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:799-803, 2015

A passively harmonically mode-locked soliton erbium-doped fiber laser with low pumping threshold using a single-walled carbon nanotubes

Concentration measurement of opaque dye solution using a non-contact fiber displacement sensor

Kertas kerja ini mempersembahkan penilaian kebolehan perisian EDFA_Design dalam simulasi sistem EDFA. Hasil simulasi ciri-ciri EDFA seperti pancaran spontan berganda, gandaan, nilai hingar dan spektrum gandaan dibandingkan dengan hasil eksperimen yang sejajar. Perbandingan yang dibuat antara hasil simulasi dan hasil eksperimen menunjukkan bahawa nilai simulasi secara amnya mempunyai persetujuan yang baik dengan nilai eksperimen. Perbezaan yang timbul pada isyarat rendah dan kuasa pam tinggi adalah kurang daripada 1 dB. Walau bagaimanapun, dalam kawasan isyarat tinggi, perbezaan yang wujud meningkat kepada 2.6 dB dan merosot lagi di kawasan kuasa pam rendah. Pada keseluruhannya, perisian EDFA_Design ternyata merupakan satu alat yang berguna bagi simulasi ciri-ciri EDFA. 
				
				Kata kunci: EDFA, simulasi, EDFA_Design, penilaian
				
				This paper presents the evaluation of the EDFA_Design software capability in simulating the EDFA system. Simulation results of the EDFA characteristics such as amplified spontaneous emission, gain, noise figure, and gain spectrum are compared with corresponding experimental values. The comparisons made between the simulation and experimental results show that the simulated values are generally in good agreement with the experimental values. The discrepancy in the low signal and high pump region is less than 1 dB. However, in the large signal region, this dicrepancy increases up to 2.6 dB and is worse in the low pump region. Overall, the EDFA_Design software proves to be a useful tool in simulating EDFA characteristics. 
				
				Keywords: EDFA, simulation, EDFA_Design, evaluation

Simulation of EDFA System Using EDFA_Design Software

A high-power dual-wavelength tunable fibre laser (HP-DWTFL) operating in the C-band at wavelengths from 1536.7 nm to 1548.6 nm is proposed and demonstrated. The HP-DWTFL utilises an arrayed waveguide grating (AWG) (1 × 16 channels) and is capable of generating eight different dual-wavelength pairs with eight possible wavelength spacings ranging from 0.8 nm (the narrowest spacing) to 12.0 nm (the widest spacing). The average output power and side mode suppression ratio (SMSR) of the HP-DWTFL are measured to be 15 dBm and 52.55 dB, respectively. The proposed HP-DWTFL is highly stable with no variations in the chosen output wavelengths and has minimal changes in the output power. Such a laser has good potential for use in measurements, communications, spectroscopy and terahertz applications.

Sulaiman Wadi Harun

Papers

A passively harmonically mode-locked soliton erbium-doped fiber laser with low pumping threshold using a single-walled carbon nanotubes

Concentration measurement of opaque dye solution using a non-contact fiber displacement sensor

Simulation of EDFA System Using EDFA_Design Software

Dual-wavelength tunable fibre laser with a 15-dBm peak power

Optical Microfiber Sensor : A Review