CFBSA: a novel and practical chlorinating reagent

2015 ◽  
Vol 51 (80) ◽  
pp. 14852-14855 ◽  
Author(s):  
Zehai Lu ◽  
Qingwei Li ◽  
Minghua Tang ◽  
Panpan Jiang ◽  
Hao Zheng ◽  
...  
Keyword(s):  
Large Scope ◽  
Great Reactivity

A novel chlorinating reagent was synthesized from easily-obtained materials and it shows great reactivity to a large scope of substrates.

An Efficient Imine Photocyclization as an Alternative to the Pictet-Spengler Reaction for the Synthesis of AzaBenzannulated Perylenediimide Dyes

2020 ◽  
Author(s):  
Antoine Goujon ◽  
Lou Rocard ◽  
Thomas Cauchy ◽  
Piétrick Hudhomme
Keyword(s):  
Solar Cells ◽  
Visible Light ◽  
Organic Solar Cells ◽  
Reaction Sequence ◽  
Large Scope ◽  
High Yields

AzaBenzannulated PDI (AzaBPDI) dyes were synthesized in high yields via a new reaction sequence involving an imine condensation followed by visible light-induced photocyclization. The large scope and efficiency of this alternative to the Pictet-Spengler reaction is demonstrated, and allows the easy preparation of dimeric AzaBPDI as potential non-fullerene acceptors for organic solar cells.

Der Wald im Lichte der neueren bundesgerichtlichen Rechtsprechung | Forest legislation in the recent jurisdiction of the Federal Supreme Court

2009 ◽  
Vol 160 (9) ◽  
pp. 263-274
Author(s):  
Alois Keel ◽  
Willi Zimmermann
Keyword(s):  
Supreme Court ◽  
Federal Law ◽  
Large Scope ◽  
Forest Law ◽  
Federal Jurisdiction ◽  
Forest Legislation ◽  
Definition Of ◽  
Forest Status ◽  
Area Planning ◽  
Federal Supreme

With the entry into force of the new Swiss Federal Law on Forests on the 1st of January 1993, the basis of decision-making for the Federal Supreme Court concerning forestry issues has, at least formally, fundamentally changed. This article depicts the development of the Federal Supreme Court's jurisdiction during 2000–2008 concerning the legislation on forests. The analysis of about 100 decisions reveals that the federal jurisdiction has, with regard to contents, barely changed in comparison to that of the federal law on supervision of the forest police of 1902. The most frequent causes of dispute are assessments of forest status, authorizations for deforestation, and forest distance regulations. The Federal Supreme Court merely refined the jurisdiction; it did not, or did not need to disclose fundamentally new lines [benchmarks]. It rather adheres to the restrictive definition of forest and the strict conservation of forests, while the cantons do not dispose of a large scope for the deforestation jurisdiction or the definition of the term “forest”. The Federal Supreme Court grants the cantons more freedom to regulate and implement the forest distance. Obvious changes can be observed concerning the number of forest law cases that have been dealt with by the Federal Supreme Court. Compared to the 1980ies and early 1990ies, they have decreased by more than half. Among others, reasons for this decrease are the cantons' obligation to appoint courts only as last cantonal resort, the improvement of the formal and material coordination of the proceedings, and the introduction of the “static forest term” with respect to building zones in the sense of the federal law on area planning.

Biomimicry: An Overview of Structures, Designs and Materials Inspired from Nature

2020 ◽  
Vol 13 (1) ◽  
pp. 3-15
Author(s):  
Arunachalam Vasanthanathan ◽  
Uthirakumar Siddharth ◽  
Manivannan Vignesh ◽  
Radhakrishnan Pravin
Keyword(s):  
Life Forms ◽  
Vital Role ◽  
X Ray ◽  
X Ray Imaging ◽  
Technological Growth ◽  
Evolution Of Life ◽  
Large Scope ◽  
Product Effectiveness ◽  
Water Turbines ◽  
Principle Objective

Background: Nature has always played a vital role in the evolution of life forms. The design of products in accordance with nature’s design, popularly known as biomimicry, had played a vital role in pushing the technology and product effectiveness to the next level. Humans have long sought to mimic not just the design, but also the methodology adopted by certain animals. For example, the walking technique of vertebrates has been effectively mimicked for a quadruped robot to make a system more efficient by consuming less power. Thus indirectly, nature acts as a driving factor in pushing technological growth. Methods: The principle objective of this paper is to provide an overview of popular bio mimicked products inspired by nature. This paper emphasizes a wide variety of products developed in the field of materials inspired by nature. Results: Wall-climbing robots, Sonar, X-ray imaging, Sandwich and Honeycomb structures are some of the popular products and designs inspired by nature. They have resulted in better designs, better products with improved efficiency and thus have proven to be better alternatives. Some products and designs such as Samara drone, Riblet surfaces, DSSCs, Biomimetic Drills and Water turbines have plenty of scopes to replace conventional products and designs. Conclusion: While plenty of products, structures and designs have successfully replaced older alternatives, there is still a large scope for biomimicry where it could potentially replace conventional products and designs to offer better efficiency.

Learning from Past Mistakes and Living a Better Life: Report on the Workshop in Istanbul on “Ottoman Ego-Documents”

2020 ◽  
Vol 54 (2) ◽  
pp. 294-302
Author(s):  
Selim Karahasanoğlu
Keyword(s):  
Art History ◽  
Historical Society ◽  
Turkish Literature ◽  
History And Literature ◽  
Large Scope ◽  
First Time

A workshop entitled “Ottoman Ego-Documents” was held at Istanbul Medeniyet University on March 11–13, 2020. The workshop was organized by Istanbul Medeniyet University's Faculty of Letters in collaboration with the Center for Ego-Document Studies and supported by the Turkish Historical Society and the Foundation for Science, Art, History and Literature (İSTEV). It was attended by specialists in history, literature, law, and theology. This event marked the first time in Turkey that this topic was discussed with a large scope. The only previous organized discussion in Turkey on “ego-documents” seems to have been “Autobiographical Themes in Turkish Literature: Theoretical and Comparative Perspectives,” held jointly by Boğaziçi University and the Orient-Institut der DMG in 2003. This discussion was mostly theoretical and the material covered belonged mainly to the post-Tanzimat era. A volume edited by Olcay Akyıldız, Halim Kara, and Börte Sagaster, the organizers of that event, was subsequently published by Ergon.

Fisheye Lens Distortion Calibration Based on the Lens Charactetic Curves

2014 ◽  
Vol 519-520 ◽  
pp. 636-639
Author(s):  
Bao Long Zhang ◽  
Shao Jing Zhang ◽  
Wei Qi Ding ◽  
Hui Shuang Shi
Keyword(s):  
Optical System ◽  
Characteristic Curve ◽  
Calibration Method ◽  
Lens Distortion ◽  
Wide Angle ◽  
Forming Process ◽  
Fisheye Lens ◽  
Large Scope ◽  
Wide Angle Lens ◽  
Barrel Distortion

The fisheye lens is a kind of ultra wide angle lens, which can produce a big super-wide-angle lens distortion. In order to cover a large scope of light, barrel distortion is artificially added to the optical system. However, in some cases this distortion is not allowed, then it requires calibrations of those distortions. Most of the traditional distortion calibration method uses target plane calibration to do it. This paper discusses the way of design fisheye lens, through which we can know the forming process of distortion clearly. Based on this paper, a simple and effective calibration method can be understood. Different from common camera calibration method, the proposed calibration method can avoid the error occurring in the process of calibrating test, that directly use the lens’ characteristic curve. Through multiple sets of experimental verifications, this method is effective and feasible.

Vinyl ether hydrolysis. XVII. Oxacyclonon-2,8-diene and the question of the unorthodox reaction mechanism for 9-methoxyoxacyclonon-2-ene

1984 ◽  
Vol 62 (1) ◽  
pp. 74-76 ◽  
Author(s):  
R. A. Burt ◽  
Y. Chiang ◽  
A. J. Kresge ◽  
S. Szilagyi
Keyword(s):  
Reaction Mechanism ◽  
Vinyl Ether ◽  
Membered Ring ◽  
Specific Rate ◽  
Ether Group ◽  
Reaction Proceeds ◽  
Great Reactivity ◽  
Rate Of Hydrolysis ◽  
Acid Catalyzed ◽  
Hydrolysis Of

The acid-catalyzed hydrolysis of the nine-membered ring cyclic vinyl ether, oxacyclonon-2,8-diene, occurs with a normal isotope effect, [Formula: see text], which indicates that this reaction proceeds by the conventional vinyl ether hydrolysis mechanism involving rate-determining proton transfer to carbon. The specific rate of this reaction, [Formula: see text], may then be used to show that there is no significant ring-size effect on the rate of hydrolysis of a vinyl ether group in a nine-membered ring. The previously noted unusually great reactivity of the vinyl ether group in 9-methoxyoxacyclonon-2-ene, for which an unorthodox reaction mechanism has been claimed, must therefore be due to some other cause.

scholarly journals A MACHINE LEARNING DATASET FOR LARGE-SCOPE HIGH RESOLUTION REMOTE SENSING IMAGE INTERPRETATION CONSIDERING LANDSCAPE SPATIAL HETEROGENEITY

2019 ◽  
Vol XLII-2/W13 ◽  
pp. 731-736
Author(s):  
Y. Xu ◽  
X. Hu ◽  
Y. Wei ◽  
Y. Yang ◽  
D. Wang
Keyword(s):  
Machine Learning ◽  
Remote Sensing ◽  
Land Cover ◽  
Spatial Heterogeneity ◽  
Satellite Remote Sensing ◽  
Sampling Method ◽  
National Level ◽  
Remote Sensing Image ◽  
Training Sample ◽  
Large Scope

<p><strong>Abstract.</strong> The demand for timely information about earth’s surface such as land cover and land use (LC/LU), is consistently increasing. Machine learning method shows its advantage on collecting such information from remotely sensed images while requiring sufficient training sample. For satellite remote sensing image, however, sample datasets covering large scope are still limited. Most existing sample datasets for satellite remote sensing image built based on a few frames of image located on a local area. For large scope (national level) view, choosing a sufficient unbiased sampling method is crucial for constructing balanced training sample dataset. Dependable spatial sample locations considering spatial heterogeneity of land cover are needed for choosing sample images. This paper introduces an ongoing work on establishing a national scope sample dataset for high spatial-resolution satellite remote sensing image processing. Sample sites been chosen sufficiently using spatial sampling method, and divided sample patches been grouped using clustering method for further uses. The neural network model for road detection trained our dataset subset shows an increased performance on both completeness and accuracy, comparing to two widely used public dataset.</p>

scholarly journals Novel framework for optimized digital forensic for mitigating complex image attacks

2020 ◽  
Vol 10 (5) ◽  
pp. 5198
Author(s):  
Shashidhar T. M. ◽  
K. B. Ramesh
Keyword(s):  
Digital Image ◽  
Cost Effective ◽  
Image Editing ◽  
Information Propagation ◽  
Digital Forensic ◽  
Image Forensic ◽  
Complex Image ◽  
Content Security ◽  
Large Scope ◽  
Design Attribute

Digital Image Forensic is significantly becoming popular owing to the increasing usage of the images as a media of information propagation. However, owing to the presence of various image editing tools and softwares, there is also an increasing threats over image content security. Reviewing the existing approaches of identify the traces or artifacts states that there is a large scope of optimization to be implmentation to further enhance teh processing. Therfore, this paper presents a novel framework that performs cost effective optmization of digital forensic tehnqiue with an idea of accurately localizing teh area of tampering as well as offers a capability to mitigate the attacks of various form. The study outcome shows that propsoed system offers better outcome in contrast to existing system to a significant scale to prove that minor novelty in design attribute could induce better improvement with respect to accuracy as well as resilience toward all potential image threats.

scholarly journals Transposable elements contribute to dynamic genome content in maize

2019 ◽  
Author(s):  
Sarah N Anderson ◽  
Michelle C Stitzer ◽  
Alex B. Brohammer ◽  
Peng Zhou ◽  
Jaclyn M Noshay ◽  
...  
Keyword(s):  
Transposable Elements ◽  
Genomic Variation ◽  
Gene Content ◽  
Maize Genome ◽  
Large Scope ◽  
Shared Ancestry ◽  
Dynamic Genome ◽  
Genomic Studies ◽  
Genome Assemblies

AbstractTransposable elements (TEs) are ubiquitous components of eukaryotic genomes and can create variation in genomic organization. The majority of maize genomes are composed of TEs. We developed an approach to define shared and variable TE insertions across genome assemblies and applied this method to four maize genomes (B73, W22, Mo17, and PH207). Among these genomes we identified 1.6 Gb of variable TE sequence representing a combination of recent TE movement and deletion of previously existing TEs. Although recent TE movement only accounted for a portion of the TE variability, we identified 4,737 TEs unique to one genome with defined insertion sites in all other genomes. Variable TEs are found for all superfamilies and are distributed across the genome, including in regions of recent shared ancestry among individuals. There are 2,380 genes annotated in the B73 genome located within variable TEs, providing evidence for the role of TEs in contributing to the substantial differences in gene content among these genotypes. The large scope of TE variation present in this limited sample of temperate maize genomes highlights the major contribution of TEs in driving variation in genome organization and gene content.Significance StatementThe majority of the maize genome is comprised of transposable elements (TEs) that have the potential to create genomic variation within species. We developed a method to identify shared and non-shared TEs using whole genome assemblies of four maize inbred lines. Variable TEs are found throughout the maize genome and in comparisons of any two genomes we find ~20% of the genome is due to non-shared TEs. Several thousand maize genes are found within TEs that are variable across lines, highlighting the contribution of TEs to gene content variation. This study creates a comprehensive resource for genomic studies of TE variability among four maize genomes, which will enable studies on the consequences of variable TEs on genome function.

The Pacific Islands Forum

2020 ◽  
pp. 241-255
Author(s):  
Frank Schimmelfennig ◽  
Thomas Winzen ◽  
Tobias Lenz ◽  
Jofre Rocabert ◽  
Loriana Crasnic ◽  
...  
Keyword(s):  
Pacific Islands ◽  
General Purpose ◽  
Regional Governance ◽  
Member States ◽  
International Diffusion ◽  
Island States ◽  
The Pacific ◽  
Large Scope ◽  
Dominant Member ◽  
Legitimacy Crisis

This chapter presents a case study of the Pacific Islands Forum (PIF). It examines why the PIF has never established an international parliamentary institution (IPI) in spite of several favourable conditions, such as an increase in authority, a large scope, predominantly democratic member states, a legitimacy crisis in regional governance, and improving conditions for international diffusion. The explanation points to the absence of and contestation about general purpose. Small and recently independent island states blocked region building and occasional IPI proposals by dominant member states (Australia and New Zealand) to protect their sovereignty. The analysis is subdivided into two cases, the 1971–2000 period of initial institutionalization and the period from 2000 onwards during which the Forum experienced deepening integration together with a severe legitimacy crisis.

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