scholarly journals Syntheses of dinor-cis/iso-12-oxo-phytodienoic acid (dn-cis/iso-OPDAs), ancestral jasmonate phytohormones of the bryophyte Marchantia polymorpha L., and their catabolites

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jianxin Wang ◽  
Haruka Sakurai ◽  
Nobuki Kato ◽  
Takuya Kaji ◽  
Minoru Ueda
Keyword(s):  
Plant Hormones ◽  
Evolutionary Origin ◽  
Marchantia Polymorpha ◽  
Significant Progress ◽  
Jasmonate Signaling ◽  
Phytohormone Signaling

AbstractIn recent years, the biology of the evolutionary origin of phytohormone signaling has made significant progress. Among them, the ligand-receptor co-evolution found in jasmonate signaling has attracted the attention of plant scientists. Dinor-cis-12-oxo-phytodienoic acid (dn-cis-OPDA, 4) and dn-iso-OPDA (5) are ancestral plant hormones of the bryophyte Marchantia polymorpha L. We succeeded in the first practical synthetic supply of these hormones as well as their possible catabolites. These compounds are expected to be useful in the study of ancestral jasmonate signaling in bryophytes.

scholarly journals Syntheses of Dinor-cis/iso-12-oxo-phytodienoic acid (dn-cis/iso-OPDAs), Ancestral Jasmonate Phytohormones of the Bryophyte Marchantia Polymorpha L., and their Catabolites

2020 ◽  
Author(s):  
Minoru Ueda ◽  
Nobuki Kato ◽  
Jianxin Wang ◽  
Haruka Sakurai ◽  
Takuya Kaji
Keyword(s):  
Plant Hormones ◽  
Marchantia Polymorpha

Abstract Dinor-cis-12-oxo-phytodienoic acid (dn-cis-OPDA, 4) and dn-iso-OPDA (5) are ancestral plant hormones of the bryophyte Marchantia polymorpha L. We succeeded in the first practical synthetic supply of these hormones as well as their possible catabolites.

scholarly journals Evolutionary Origin of JAZ Proteins and Jasmonate Signaling

2019 ◽  
Vol 12 (2) ◽  
pp. 153-155 ◽  
Author(s):  
Gregg A. Howe ◽  
Yuki Yoshida
Keyword(s):  
Evolutionary Origin ◽  
Jasmonate Signaling ◽  
Jaz Proteins

Toward quantitative defect analysis using HREM

1994 ◽  
Vol 52 ◽  
pp. 714-715
Author(s):  
David J. Smith
Keyword(s):  
Electron Microscope ◽  
Unit Cell ◽  
Defect Analysis ◽  
Significant Progress ◽  
Detailed Characterization ◽  
Small Unit ◽  
Resolution Electron ◽  
High Resolution Electron Microscope ◽  
Large Unit Cell ◽  
Made In

The electron microscope has evolved to the level where it is now straightforward to record highresolution images from thin samples (t∼10 to 20nm) that are directly interpretable in terms of atomic arrangements. Whilst recorded images necessarily represent two-dimensional projections of the structure, many defects such as dislocations and interfaces may be linear or planar in nature and thus might be expected to be amenable to detailed characterization. In this review, we briefly consider the recent significant progress that has been made in quantitative defect analysis using the high-resolution electron microscope and then discuss some drawbacks to the technique as well as potential scope for further improvements. Surveys of defect modelling for some small-unit-cell materials and interfaces have recently been published, and reference should be made to other papers in this symposium for further examples.The technique of structure imaging originated in the early '70s with observations of large-unit-cell block oxides.

Improving Students’ Achievement in Reading Comprehension Through Advance Organizer Strategy

2015 ◽  
Vol 12 (1) ◽  
Author(s):  
Tuti Andriani Siregar ◽  
Didik Santoso ◽  
Anni Holila Pulungan
Keyword(s):  
Reading Comprehension ◽  
Key Words ◽  
Learning Process ◽  
Advance Organizer ◽  
Teaching Reading ◽  
Significant Progress ◽  
The Subject ◽  
Passing Grade

This study deals with the improvement of the students’ achievement in reading comprehension through advance organizer strategy. The objectives of this research were to improve the students’ achievement in reading comprehension as well as the process of learning reading comprehension by using advance organizer strategy.  The subject of the study was grade XI IPA 2 Madrasah Aliyah Negeri Binjai consisting of 33 students. The data of this study were obtained by using test, observation sheets and interview. This research was conducted in two cycles because in the pre-test (without treatment), the average of the students’ score was 59,24. In the first cycle test, it was 74,30. It is lower than the minimum passing grade, and if is viewed from the observation sheets, the situation of the learning process hasn’t met the criteria of the success. So the writer continued to the second cycle. There was a significant progress on the students’ achievement in reading comprehension in the second cycle, and the average of the students was 82,94. The students were more active and enthusiastic in following the lesson. Therefore, the teaching reading comprehension through advance organizer strategy can improve the students’ achievement in reading comprehension quantitatively and qualitatively. Key words:  improving, reading comprehension, advance organizer strategy.

Automatic Registering and Stitching of TEM/STEM Image Mosaics

2013 ◽  
Author(s):  
Chung-Ching Lin ◽  
Franco Stellari ◽  
Lynne Gignac ◽  
Peilin Song ◽  
John Bruley
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
Vlsi Circuit ◽  
Significant Progress ◽  
Research Areas ◽  
Automated Method ◽  
Transmission Electron ◽  
Stem Image ◽  
High Resolution Images ◽  
Global Optimal

Abstract Transmission Electron Microscopy (TEM) and scanning TEM (STEM) is widely used to acquire ultra high resolution images in different research areas. For some applications, a single TEM/STEM image does not provide enough information for analysis. One example in VLSI circuit failure analysis is the tracking of long interconnection. The capability of creating a large map of high resolution images may enable significant progress in some tasks. However, stitching TEM/STEM images in semiconductor applications is difficult and existing tools are unable to provide usable stitching results for analysis. In this paper, a novel fully automated method for stitching TEM/STEM image mosaics is proposed. The proposed method allows one to reach a global optimal configuration of each image tile so that both missing and false-positive correspondences can be tolerated. The experiment results presented in this paper show that the proposed method is robust and performs well in very challenging situations.

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