Supercarboranes: Achievements and perspectives

2012 ◽  
Vol 85 (4) ◽  
pp. 661-670 ◽  
Author(s):  
Jian Zhang ◽  
Zuowei Xie

This article highlights the achievements in the chemistry of supercarboranes (carboranes with more than 12 vertices) in the past decade and the future perspectives. The chemistry of boron clusters has been dominated by 12-vertex carboranes for several decades. Only in recent years has significant progress been made in the chemistry of supercarboranes. Such a breakthrough relies on the use of CAd (carbon-atoms-adjacent) 12-vertex nido-carborane anions as starting materials. A series of 13- and 14-vertex carboranes as well as their corresponding 14- and 15-vertex metallacarboranes have been prepared and structurally characterized. Reactions of supercarboranes with reducing agents, electrophiles, and nucleophiles are studied, which reveal a more diverse and richer reaction chemistry than their icosahedral cousins.

2018 ◽  
Vol 90 (4) ◽  
pp. 733-744 ◽  
Author(s):  
Simon Duttwyler

AbstractSignificant progress in the functionalization of icosahedral boron clusters has been made in the past years, leading to an increasing number of applications in various fields of research. The direct conversion of B–H bonds to substituted vertices constitutes an attractive strategy to synthesize cage compounds with desired properties. In this report, recent advances in the transition metal-catalyzed B–H activation of neutral and anionic boron clusters are presented.


2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Karla N. Samman ◽  
Carolyn Ross ◽  
Christian Pagnoux ◽  
Jean-Paul Makhzoum

Significant progress has been made in the treatment of ANCA-associated vasculitides (AAV), notably in granulomatosis with polyangiitis and microscopic polyangiitis. Over the past few years, many innovative studies have changed the way we now induce and maintain remission in AAV; achieving remission while limiting treatment toxicity is the key. This article provides an in-depth, up-to-date summary of recent trials and suggests treatment algorithms for induction and maintenance of remission based on the latest guidelines. Future possible therapies in AAV will also be discussed.


Lab on a Chip ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 795-820
Author(s):  
Andrea Spanu ◽  
Laura Martines ◽  
Annalisa Bonfiglio

This review focuses on the applications of organic transistors in cellular interfacing. It offers a comprehensive retrospective of the past, an overview of the latest innovations, and a glance on the future perspectives of this fast-evolving field.


2021 ◽  
Vol 9 ◽  
Author(s):  
Jian Shi ◽  
Yadong Guo ◽  
María José Cavagnaro ◽  
Jifeng Cai ◽  
Zhuoying Liu

As the sexual minority in China, transpersons remain faced with various realistic challenges. In recent years, however, there has been a significant progress made in the protection given to the rights that transpersons deserve. Currently, the citizens who have changed their gender through sex reassignment surgery can make applications to the local police station for changing their gender registration and get issued a new ID card. This is regarded as a crucial milestone in reducing the bias against transpersons and protecting their legitimate rights in China. Highlighted by the case of an extraordinary appraisee who have received SRS to change from male to female and started a new life with a new ID, not only does this article construe the current ID policy and the detailed process of ID card change for transpersons in China, it also reveals the living and developmental conditions facing transpersons in China. Finally, the visibility of the community of transpersons is improved to eradicate the discrimination against transpersons.


Contract Law ◽  
2020 ◽  
pp. 245-258
Author(s):  
Ewan McKendrick

Requirements of form (such as writing) are not as important today as they were in the past. As a general rule, contracts can be made in any form and can be proved by any means, although there remain exceptional cases where the law does insist upon requirements of form. This chapter, which considers the reasons for continued reliance upon requirements of form, along with the criticisms levelled against such requirements, begins by explaining why legal systems impose formal requirements upon contracting parties. It then outlines the formal requirements in English contract law, followed by a discussion of the future of formal requirements, noting the distinction between cases where the contract must be made in writing and cases in which contracts must be evidenced in writing.


Author(s):  
Ewan McKendrick

Requirements of form (such as writing) are not as important today as they were in the past. As a general rule, contracts can be made in any form and can be proved by any means, although there remain exceptional cases where the law does insist upon requirements of form. This chapter, which considers the reasons for continued reliance upon requirements of form, along with the criticisms levelled against such requirements, begins by explaining why legal systems impose formal requirements upon contracting parties. It then outlines the formal requirements in English contract law, followed by a discussion of the future of formal requirements, noting the distinction between cases where the contract must be made in writing and cases in which contracts must be evidenced in writing.


2017 ◽  
Vol 5 (4) ◽  
pp. 125-135
Author(s):  
David Evans Bailey

Whilst online dating has been around for several years; immersive technologies are relatively new to this type of interaction. The first forays into immersive VR online dating have only just being made in the past year. To what degree this type of technology will change the way that we date is potentially quite different from the current way that online dates are conducted. The way the technology works could make virtual dates seem as real as a physical date. Understanding how immersive technology functions gives some insights into the future of online dating and also the impact on the digital economy.


2007 ◽  
Vol 35 (1) ◽  
pp. 152-155 ◽  
Author(s):  
Y. Helariutta

Vascular tissue in plants is unique due to its diverse and dynamic cellular patterns. Through research in several organisms, such as Arabidopsis, Populus and Zinnia, using biochemical, genetic and genomic approaches, significant progress has recently been made in revealing the molecular nature of several signals underlying the patterning of vascular tissue. These signals include ligands, receptors and transcriptional regulators. The future challenge is to understand how the identified signals work together to control vascular morphogenesis.


Author(s):  
Volker Stein

The German discourse on Human Capital Management (HCM) has a long history which resulted in the manifoldness of notions connected with HCM. The exact specification of the meaning of HCM basically depends on the frame of reference used: the frame of the past, of the present or of the future. The present article which concentrates on the German aspects of the HCM debate is aimed at systematizing this discourse by outlining the past and present HCM development in Germany as well as its future perspectives. It will result in a synoptic view, summing up the German state-of-the-art HCM.


2010 ◽  
Vol 12 (4) ◽  
pp. 433-448 ◽  

Emotion and cognition have been viewed as largely separate entities in the brain. Within this framework, significant progress has been made in understanding specific aspects of behavior. Research in the past two decades, however, has started to paint a different picture of brain organization, one in which network interactions are key to understanding complex behaviors. From both basic and clinical perspectives, the characterization of cognitive-emotional interactions constitutes a fundamental issue in the investigation of the mind and brain. This review will highlight the interactive and integrative potential that exists in the brain to bring together the cognitive and emotional domains. First, anatomical evidence will be provided, focusing on structures such as hypothalamus, basal forebrain, amygdala, cingulate cortex, orbitofrontal cortex, and insula. Data on functional interactions will then be discussed, followed by a discussion of a dual competition framework, which describes cognitive-emotional interactions in terms of perceptual and cognitive competition mechanisms.


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