Optical properties regularities in the family of {Mo6I8} aquahydroxo complexes

2021 ◽  
Author(s):  
Margarita V. Marchuk ◽  
Natalya A. Vorotnikova ◽  
Yuri A. Vorotnikov ◽  
Natalia Kuratieva ◽  
Dmitri V. Stass ◽  
...  
Keyword(s):  
Optical Properties ◽  
Factors Affecting ◽  
Cluster Complexes ◽  
Practical Applications ◽  
The Family ◽  
Molybdenum Cluster

Luminescence is one of the key properties of octahedral molybdenum cluster complexes and the basis for most areas of their possible practical applications. Nevertheless, the factors affecting optical properties of...

scholarly journals Hydroxyurea—The Good, the Bad and the Ugly

Genes ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 1096
Author(s):  
Marcelina W. Musiałek ◽  
Dorota Rybaczek
Keyword(s):  
Cancer Progression ◽  
Specific Interaction ◽  
Interaction Mechanism ◽  
Myeloproliferative Disorders ◽  
Prolonged Treatment ◽  
Actual State ◽  
Cytotoxic Effects ◽  
Factors Affecting ◽  
Cell Cycles ◽  
Practical Applications

Hydroxyurea (HU) is mostly referred to as an inhibitor of ribonucleotide reductase (RNR) and as the agent that is commonly used to arrest cells in the S-phase of the cycle by inducing replication stress. It is a well-known and widely used drug, one which has proved to be effective in treating chronic myeloproliferative disorders and which is considered a staple agent in sickle anemia therapy and—recently—a promising factor in preventing cognitive decline in Alzheimer’s disease. The reversibility of HU-induced replication inhibition also makes it a common laboratory ingredient used to synchronize cell cycles. On the other hand, prolonged treatment or higher dosage of hydroxyurea causes cell death due to accumulation of DNA damage and oxidative stress. Hydroxyurea treatments are also still far from perfect and it has been suggested that it facilitates skin cancer progression. Also, recent studies have shown that hydroxyurea may affect a larger number of enzymes due to its less specific interaction mechanism, which may contribute to further as-yet unspecified factors affecting cell response. In this review, we examine the actual state of knowledge about hydroxyurea and the mechanisms behind its cytotoxic effects. The practical applications of the recent findings may prove to enhance the already existing use of the drug in new and promising ways.

scholarly journals Towards practical applications of quantum emitters in boron nitride

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
M. Koperski ◽  
K. Pakuła ◽  
K. Nogajewski ◽  
A. K. Dąbrowska ◽  
M. Tokarczyk ◽  
...  
Keyword(s):  
Optical Properties ◽  
Boron Nitride ◽  
Vapour Phase ◽  
Emission Characteristics ◽  
Vapour Phase Epitaxy ◽  
Practical Applications ◽  
Metalorganic Vapour Phase Epitaxy ◽  
Polydimethylsiloxane Films ◽  
Background Luminescence ◽  
Quantum Emitters

AbstractWe demonstrate quantum emission capabilities from boron nitride structures which are relevant for practical applications and can be seamlessly integrated into a variety of heterostructures and devices. First, the optical properties of polycrystalline BN films grown by metalorganic vapour-phase epitaxy are inspected. We observe that these specimens display an antibunching in the second-order correlation functions, if the broadband background luminescence is properly controlled. Furthermore, the feasibility to use flexible and transparent substrates to support hBN crystals that host quantum emitters is explored. We characterise hBN powders deposited onto polydimethylsiloxane films, which display quantum emission characteristics in ambient environmental conditions.

scholarly journals Hexaazide octahedral molybdenum cluster complexes: Synthesis, properties and the evidence of hydrolysis

2017 ◽  
Vol 1134 ◽  
pp. 237-243 ◽  
Author(s):  
Yuri A. Vorotnikov ◽  
Olga A. Efremova ◽  
Igor N. Novozhilov ◽  
Vadim V. Yanshole ◽  
Natalia V. Kuratieva ◽  
...  
Keyword(s):  
Cluster Complexes ◽  
Molybdenum Cluster ◽  
Synthesis Properties

scholarly journals New palladium–oxazoline complexes: Synthesis and evaluation of the optical properties and the catalytic power during the oxidation of textile dyes

2015 ◽  
Vol 11 ◽  
pp. 1175-1186 ◽  
Author(s):  
Rym Hassani ◽  
Mahjoub Jabli ◽  
Yakdhane Kacem ◽  
Jérôme Marrot ◽  
Damien Prim ◽  
...  
Keyword(s):  
Optical Properties ◽  
Spectroscopic Analysis ◽  
Palladium Complexes ◽  
X Ray Diffraction ◽  
Factors Affecting ◽  
Enantiomerically Pure ◽  
One Step ◽  
Uv Visible ◽  
High Yields

The present paper describes the synthesis of new palladium–oxazoline complexes in one step with good to high yields (68–95%). The oxazolines were prepared from enantiomerically pure α-aminoalcohols. The structures of the synthesized palladium complexes were confirmed by NMR, FTIR, TOFMS, UV–visible spectroscopic analysis and X–ray diffraction. The optical properties of the complexes were evaluated by the determination of the gap energy values (E g) ranging between 2.34 and 3.21 eV. Their catalytic activities were tested for the degradation of Eriochrome Blue Black B (a model of azo dyes) in the presence of an ecological oxidant (H2O2). The efficiency of the decolorization has been confirmed via UV–visible spectroscopic analysis and the factors affecting the degradation phenomenon have been studied. The removal of the Eriochrome reached high yields. We have found that the complex 9 promoted 84% of color elimination within 5 min (C 0 = 30 mg/L, T = 22 °C, pH 7, H2O2 = 0.5 mL) and the energetic parameters have been also determined.

Family Estrangement

2013 ◽  
Author(s):  
Kylie Agllias
Keyword(s):  
Family System ◽  
Family Systems Theory ◽  
Structural Factors ◽  
Bowen Family Systems Theory ◽  
Political Awareness ◽  
Parental Alienation ◽  
Factors Affecting ◽  
The Family ◽  
Grief Responses ◽  
The Impact

Family estrangement—a concept similar to emotional cutoff in Bowen family systems theory—is the unsatisfactory physical or emotional distancing between at least two family members. It is attributed to a number of biological, psychological, social, and structural factors affecting the family, including attachment disorders, incompatible values and beliefs, unfulfilled expectations, critical life events and transitions, parental alienation, and ineffective communication patterns. Family estrangement is often experienced as a considerable loss; its ambiguous nature and social disenfranchisement can contribute to significant grief responses, perceived stigma, and social isolation in some cases. The social-work profession has a role to play in raising social and political awareness of the prevalence of, contributors to, and effects of estrangement on the intergenerational family, with clinicians working to assess and address the impact of estrangement on individuals and the family system.

Effect of Sulfurization Process on Octahedral Molybdenum Cluster from Mo6 Cluster to MoS2 Nanosheet

2021 ◽  
Vol 904 ◽  
pp. 334-338
Author(s):  
Mei Qi Zhang ◽  
Fabien Grasset ◽  
Noée Dumait ◽  
Stephane Cordier ◽  
Toshihiro Shimada ◽  
...  
Keyword(s):  
Optical Properties ◽  
Electronic Structure ◽  
Chemical Activity ◽  
Sulfurization Process ◽  
Molybdenum Cluster

The Mo6 cluster which has the great optical properties and chemical activity because of their unique electronic structure have been attracted attention in many fields such as phosphor and photocatalyst. However, the Mo6 cluster it’s hard to recycling which limited its industry application because of its such small nanoscale. Immobilizing the Mo6 cluster on 2-D material has a great value to challenge it. In this research, we study on the sulfurization process of Mo6Br12 cluster to investigate the more possibility of the immobilization of Mo6 cluster.

scholarly journals Assessment of Language and Literacy in Children Who Are d/Deaf and Hard of Hearing

2019 ◽  
Vol 9 (3) ◽  
pp. 223 ◽  
Author(s):  
Lianna Pizzo ◽  
Amanda Chilvers
Keyword(s):  
Hard Of Hearing ◽  
Language And Literacy ◽  
Theoretical Orientations ◽  
Factors Affecting ◽  
Research And Practice ◽  
Practical Applications ◽  
Children’S Participation ◽  
Children's Participation ◽  
The Relationship

This article presents theoretical orientations and practical applications for the assessment of d/Deaf and hard of hearing (d/Dhh) children. It discusses current approaches to assessment and the factors affecting d/Dhh children’s participation in assessments using those approaches. Gaps in the field around access to appropriate assessments are discussed. This review also shares information on the relationship between the purpose of the assessment and the approach selected. Basic considerations for both d/Deaf and hard of hearing multilingual learners (d/DMLs) and d/Dhh children with additional disabilities will be addressed. Finally, general recommendations are made for research and practice.

A study of supported molybdenum cluster complexes as catalyst precursors

1989 ◽  
Vol 53 (3) ◽  
pp. 381-395 ◽  
Author(s):  
P.Michael Boorman ◽  
Kenneth Chong ◽  
Khalid S. Jasim ◽  
Ronald A. Kydd ◽  
Jenny M. Lewis ◽  
...  
Keyword(s):  
Cluster Complexes ◽  
Molybdenum Cluster
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