Ching-Chun Chang

ORCID: 0000-0003-1002-1756
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About
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Research Areas
  • Semiconductor materials and devices
  • Semiconductor Quantum Structures and Devices
  • Semiconductor materials and interfaces
  • Photosynthetic Processes and Mechanisms
  • Metal and Thin Film Mechanics
  • Copper Interconnects and Reliability
  • CRISPR and Genetic Engineering
  • Silicon Nanostructures and Photoluminescence
  • Integrated Circuits and Semiconductor Failure Analysis
  • GaN-based semiconductor devices and materials
  • Plant and animal studies
  • Advancements in Semiconductor Devices and Circuit Design
  • Plant Pathogens and Fungal Diseases
  • Transgenic Plants and Applications
  • RNA regulation and disease
  • Thin-Film Transistor Technologies
  • RNA and protein synthesis mechanisms
  • Organic Electronics and Photovoltaics
  • Silicon and Solar Cell Technologies
  • Chalcogenide Semiconductor Thin Films
  • Plant Stress Responses and Tolerance
  • Plant and Fungal Species Descriptions
  • Viral gastroenteritis research and epidemiology
  • Physics of Superconductivity and Magnetism
  • Digital Media Forensic Detection

National Cheng Kung University
2009-2024

National Tsing Hua University
1996-2021

University of Warwick
2018-2021

Tsinghua University
2020-2021

Institute of Atomic and Molecular Sciences, Academia Sinica
2010-2015

Czech Academy of Sciences, Institute of Biotechnology
2010

National Center for Theoretical Sciences
2009

National Central University
2009

Chung Yuan Christian University
2001

National Yang Ming Chiao Tung University
1994-2000

Monitoring continuous BP signal is an important issue, because blood pressure (BP) varies over days, minutes, or even seconds for short-term cases. Most of photoplethysmography (PPG)-based estimation methods are susceptible to noise and only provides systolic (SBP) diastolic (DBP) prediction. Here, instead estimating a discrete value, we focus on different perspectives estimate the whole waveform BP. We propose novel deep learning model learn how perform signal-to-signal translation from PPG...

10.3390/s21092952 article EN cc-by Sensors 2021-04-23

Due to the growing public awareness of cardiovascular disease (CVD), blood pressure (BP) estimation models have been developed based on physiological parameters extracted from both electrocardiograms (ECGs) and photoplethysmograms (PPGs). Still, in order enhance usability as well reduce sensor cost, researchers endeavor establish a generalized BP model using only PPG signals. In this paper, we propose deep neural network capable extracting 32 features exclusively signals for estimation. The...

10.3390/s20195668 article EN cc-by Sensors 2020-10-04

We have characterized two maize cDNAs, rpoTm and rpoTp, that encode putative T7-like RNA polymerases. In vivo cellular localization experiments using transient expression of the green fluorescent protein suggest their encoded proteins are targeted exclusively to mitochondria plastids, respectively. An antibody raised against C terminus rpoTp gene product identified mitochondrial polypeptides ~100 kD. Their presence was correlated with polymerase activity, inhibited in vitro transcription...

10.1105/tpc.11.5.911 article EN The Plant Cell 1999-05-01

Iris segmentation plays an important and significant role in the iris recognition system. The prerequisite for accurate is correctness of segmentation. However, efficiency robustness traditional methods are severely challenged a non-cooperative environment because unfavorable factors, instance, occlusion, blur, low resolution, off-axis, motion, specular reflections. All above factors seriously reduce accuracy In this paper, we present novel algorithm that localizes outer inner boundaries...

10.3390/s21041434 article EN cc-by Sensors 2021-02-18

The effects of cathode buffer layers on the bulk-heterojunction solar cells are investigated. Comparing with device without layer, obvious enhancements Voc from 0.38 to 0.65 V and fill factor 44% 63% have been achieved by using 2 nm bathocuproine which make efficiency devices improved 1.63% 4.11%. Alternatively, lithium fluoride and/or tris(8-hydroxyquinolinato) aluminum were also introduced for clarification purpose. X-ray photoelectron spectroscopy study indicates that degradation caused...

10.1063/1.3456530 article EN Applied Physics Letters 2010-06-28

RNA editing sites were systematically examined for the transcripts of 74 known protein-coding genes in chloroplasts Phalaenopsis aphrodite. A total 44 identified 24 transcripts, highest reported seed plants. In addition, 21 are unique to orchid as compared with other All is C-to-U conversion, and 42 bring about changes amino acids. One remaining two occurs ndhB pseudogene, another 5'-untranslated region psbH transcripts.

10.1093/pcp/pcl058 article EN Plant and Cell Physiology 2006-12-14

RNA editing is a process of post-transcriptional level gene regulation by nucleotide modification. Previously, the chloroplast DNA Taiwan endemic moth orchid, P. aphrodite subsp. formosana was determined, and 44 sites were identified from 24 plastid protein-coding transcripts leaf tissue via RT-PCR then conventional Sanger sequencing. However, status whole-plastid in other distinct types orchids has not been addressed. To sensitively extensively examine RNA-Seq used to investigate floral...

10.1186/s40529-017-0193-7 article EN cc-by Botanical studies 2017-09-16

In1−xGaxP epitaxial layers were grown on (100) GaAs substrates by liquid-phase epitaxy using supercooling technique. The lattice mismatch normal to the wafer surface between layer and substrate varies linearly with supercooled temperature of growth solution. composition-pulling phenomenon was not observed in this study. rate, intensity, full width at half maximum photoluminescent spectrum are also dependent temperature. It is shown that narrowest widths peak 10.6 35 meV 14 300 K,...

10.1063/1.336087 article EN Journal of Applied Physics 1985-08-15

A recombinant putative acid phosphatase from Thermus thermophilus was expressed and purified Escherichia coli. The displayed activities in a broad range of temperature, 40 to 90 degrees C, with optimal temperature at 70 C. In addition, the enzyme had wide pH, 3.6 9.1, pH 6 acetate buffer 6.5 Hepes buffer. Furthermore, it showed significant thermal stability still possessed 44% residual activity after C treatment for 15 min. Moreover, substrates specificities monophosphate esters,...

10.1271/bbb.90773 article EN Bioscience Biotechnology and Biochemistry 2010-04-07

Thin films of ZrNx were prepared by reactive rf magnetron sputtering from a Zr target in an Ar+N2 atmosphere, with different substrate biases (zero to −200V) and nitrogen flow ratios (0.5%–24%). The resistivity, density, stoichiometry, crystal structure investigated. With 2% ratio, all exhibit the cubic ZrN phase, regardless magnitude bias. zero-biased film contains substantial oxygen shows high resistivity. Once negative bias is applied substrate, incorporated can be reduced (111)ZrN...

10.1116/1.1776182 article EN Journal of Vacuum Science & Technology A Vacuum Surfaces and Films 2004-09-01

The unique nanoarchitecture developed in this study and the use of replaceable stainless steel grids as catalyst supports certainly provide a promising platform technique for catalytic generation high methanol conversion, hydrogen production rate durability to produce electrical energy.

10.1039/c0cc02918a article EN Chemical Communications 2010-11-18

The diffusion barrier properties of as-deposited amorphous and crystalline TaN between Cu have been investigated in structures. thermal reactions after annealing vacuum at 500 to 900°C were by using sheet resistance measurements, glancing incident angle X-ray diffraction, scanning electron microscopy, energy-dispersive spectrometry, Rutherford backscattering spectrometry. No significant reaction change detected for both systems up 800°C. As compared TaN, exhibited better electrical...

10.1149/1.1803836 article EN Journal of The Electrochemical Society 2004-01-01
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