An organic-ligand-free thermochromic luminescent cuprous iodide trinuclear cluster: evidence for cluster centered emission and configuration distortion with temperature

2015 ◽  
Vol 51 (38) ◽  
pp. 8062-8065 ◽  
Author(s):  
Shi-Li Li ◽  
Fu-Qiang Zhang ◽  
Xian-Ming Zhang
Keyword(s):  
Organic Ligand ◽  
Structural Distortion ◽  
Temperature Dependent ◽  
Trinuclear Cluster ◽  
Ligand Free ◽  
Significant Temperature ◽  
Single Cluster

An organic-ligand-free cuprous iodide trinuclear cluster with significant temperature-dependent structural distortion shows thermochromic luminescence originating from a single cluster-centered triplet.

First-Principles Investigation of Phase Stability, Elastic and Thermodynamic Properties in L12 Co3(Al,Mo,Ta) Phase

2017 ◽  
Vol 898 ◽  
pp. 438-445
Author(s):  
Qiang Yao ◽  
Tong Lu ◽  
Qiong Wang ◽  
Yan Wang ◽  
Yu Hong Zhu
Keyword(s):  
Thermodynamic Properties ◽  
Phase Stability ◽  
First Principles ◽  
Linear Thermal Expansion ◽  
Temperature Dependent ◽  
Shear Moduli ◽  
Young’S Moduli ◽  
High Temperature Alloys ◽  
Temperature Dependences ◽  
Significant Temperature

First-principles calculations have been performed to investigate the phase stability, elastic, and thermodynamic properties of Co3(Al,Mo,Ta) with the L12 structure. Calculated elastic constants showed that Co3(Al,Mo,Ta) is mechanically stable and possesses intrinsic ductility. Young’s and shear moduli of polycrystalline Co3(Al,Mo,Ta) were calculated using the Voigt-Reuss-Hill approach. It was found that the shear and Young’s moduli of Co3(Al,Mo,Ta) were smaller than those of Co3(Al,W). States density indicated the existence of covalent-like bonding in Co3(Al,Mo,Ta). Temperature-dependent thermodynamic properties of Co3(Al,Mo,Ta) could be described satisfactorily using the Debye-Grüneisen approach, including entropy, enthalpy, heat capacity and linear thermal expansion coefficient, showing their significant temperature dependences. Furthermore the obtained data could be employed in the modeling of thermodynamic and mechanical properties of Co-based alloys to enable the design of high temperature alloys.

Conrod Bearings With an Optimized Narrow Circumferential Oil Groove: Simulated Durability Improvement for Heavy-Duty Applications

2015 ◽  
Vol 137 (10) ◽  
Author(s):  
Konstantinos Kalogiannis ◽  
David R. Merritt ◽  
Omar Mian ◽  
Hugh Gibson
Keyword(s):  
Negative Impact ◽  
Elastohydrodynamic Lubrication ◽  
Design Feature ◽  
Operating Conditions ◽  
Temperature Dependent ◽  
Operating Life ◽  
Oil Film ◽  
Significant Temperature ◽  
Bearing Design ◽  
Engine Crankshaft

Under normal operating conditions, engine crankshaft bearings experience variations in oil film temperature due to shearing of the oil film. This can have a negative impact on the bearing operating life since the viscosity of the lubricant is temperature dependent. In the current study, a thermo-elastohydrodynamic lubrication (TEHL) analysis has been conducted using an in-house specialized simulation package called (software for analysis of bearings in reciprocating engines) SABRE-TEHL. This advanced simulation tool has been used to optimize a new bearing design feature leading to a significant temperature reduction, which in turn increases the robustness of the system.

A PEG1000-DAIL[CdCl3]–toluene temperature-dependent biphasic system that regulates homogeneously catalyzed C–O coupling of organic halides with phenols and alcohols under ligand-free conditions

2011 ◽  
Vol 89 (4) ◽  
pp. 471-480 ◽  
Author(s):  
Yu Lin Hu ◽  
Xiao Yun Ma ◽  
Ming Lu
Keyword(s):  
Catalytic Activity ◽  
Catalytic System ◽  
Biphasic System ◽  
Temperature Dependent ◽  
Convenient Procedure ◽  
Organic Halides ◽  
Ligand Free

An efficient, experimentally simple, and convenient procedure for the C–O coupling of organic halides with phenols and alcohols in a PEG1000-DAIL[CdCl3]–toluene temperature-dependent biphasic system has been developed. The product can be easily isolated by a simple decantation, and the catalytic system can be recycled and reused without loss of catalytic activity.

Cl- regulates cryoglobulin structure: a new hypothesis for the physiopathological mechanism of temperature non-dependent cryoprecipitation

2004 ◽  
Vol 42 (6) ◽  
Author(s):  
Enrico Di Stasio ◽  
Patrizia Bizzarri ◽  
Milvia Casato ◽  
Antonio Galtieri ◽  
Massimo Fiorilli ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Clinical Signs ◽  
Cold Temperature ◽  
Pathogenetic Mechanism ◽  
Temperature Dependent ◽  
Temperature Changes ◽  
Significant Temperature ◽  
Neoplastic Disorders ◽  
New Hypothesis

AbstractCryoglobulins are pathological cold-precipitable immunoglobulins associated with a number of infectious, autoimmune and neoplastic disorders. Patients, when exposed to low temperatures, show symptoms related to intravascular precipitation of such immunoglobulins. The formation of cryoaggregates induced by exposure to cold temperature is the key pathogenetic mechanism. The subsequent intravascular precipitation can account for some clinical signs of peripheral vasculitis, but fails to explain the precipitation of cryoglobulins in regions where no significant temperature changes take place. We studied, in vitro, the activity of different ions on temperature-dependent aggregation of cryoglobulins and found that the concentration of Cl

The accumulation of [35S]methimazole by monocytes and macrophages

1984 ◽  
Vol 107 (3) ◽  
pp. 366-370 ◽  
Author(s):  
A. P. Weetman ◽  
Catherine Gunn ◽  
R. Hall ◽  
A. M. McGregor
Keyword(s):  
Cell Lines ◽  
Antithyroid Drug ◽  
Antigen Presenting Cells ◽  
Leukaemic Cell ◽  
Graves Disease ◽  
Temperature Dependent ◽  
Culture Techniques ◽  
Monocytes And Macrophages ◽  
Significant Temperature ◽  
Antigen Presenting

Abstract. We have used an automatic cell harvester and micro culture techniques to examine the accumulation of [35S]methimazole by monocytes, macrophages and lymphocytes. Significant temperature-dependent accumulation of the drug was found in resting monocytes and macrophages; this was increased up to 4-fold by phagocytosis. Lymphocytes accumulated little or no drug and myeloma and leukaemic cell lines accumulated none. These results show that two interrelated cells with endogenous peroxidatic activity take up the antithyroid drug methimazole providing further support for the concept that immunosuppression by this drug in Graves' disease is mediated via an action on antigen-presenting cells.

Organic Ligand‐Free Hydroformylation with Rh Particles as Catalyst †

2019 ◽  
Vol 38 (2) ◽  
pp. 139-143 ◽  
Author(s):  
Shujuan Liu ◽  
Xingchao Dai ◽  
Hongli Wang ◽  
Xinzhi Wang ◽  
Feng Shi
Keyword(s):  
Organic Ligand ◽  
Ligand Free

scholarly journals Monitoring Thermal Ablation via Microwave Tomography: An Ex Vivo Experimental Assessment

Diagnostics ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 81 ◽  
Author(s):  
Rosa Scapaticci ◽  
Vanni Lopresto ◽  
Rosanna Pinto ◽  
Marta Cavagnaro ◽  
Lorenzo Crocco
Keyword(s):  
Thermal Ablation ◽  
Ex Vivo ◽  
Imaging Techniques ◽  
Bovine Liver ◽  
Electromagnetic Properties ◽  
Microwave Tomography ◽  
Temperature Dependent ◽  
Discussion Section ◽  
Monitoring Technique ◽  
Significant Temperature

Thermal ablation treatments are gaining a lot of attention in the clinics thanks to their reduced invasiveness and their capability of treating non-surgical patients. The effectiveness of these treatments and their impact in the hospital’s routine would significantly increase if paired with a monitoring technique able to control the evolution of the treated area in real-time. This is particularly relevant in microwave thermal ablation, wherein the capability of treating larger tumors in a shorter time needs proper monitoring. Current diagnostic imaging techniques do not provide effective solutions to this issue for a number of reasons, including economical sustainability and safety. Hence, the development of alternative modalities is of interest. Microwave tomography, which aims at imaging the electromagnetic properties of a target under test, has been recently proposed for this scope, given the significant temperature-dependent changes of the dielectric properties of human tissues induced by thermal ablation. In this paper, the outcomes of the first ex vivo experimental study, performed to assess the expected potentialities of microwave tomography, are presented. The paper describes the validation study dealing with the imaging of the changes occurring in thermal ablation treatments. The experimental test was carried out on two ex vivo bovine liver samples and the reported results show the capability of microwave tomography of imaging the transition between ablated and untreated tissue. Moreover, the discussion section provides some guidelines to follow in order to improve the achievable performances.

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