Tropylium and Porphyrinoid Character in Carbaporphyrinoid Systems. Relative Stability and Aromatic Characteristics of Azuliporphyrin and Tropiporphyrin Tautomers, Protonated Species, and Related Structures

2018 ◽  
Vol 123 (1) ◽  
pp. 230-246 ◽  
Author(s):  
Deyaa I. AbuSalim ◽  
Timothy D. Lash
Keyword(s):  
Relative Stability ◽  
Protonated Species

On Relative Stability and the Coordination Problem in Market Economies.

1995 ◽  
Vol 46 (6) ◽  
pp. 1445-1459 ◽  
Author(s):  
Luciano Boggio
Keyword(s):  
Relative Stability ◽  
Coordination Problem ◽  
Market Economies

Equilibrium Studies of Binary and Ternary Complexes of Palladium(II) Involving Amino Acids

1993 ◽  
Vol 58 (5) ◽  
pp. 1103-1108 ◽  
Author(s):  
Mohamed M. Shoukry ◽  
Eman M. Shoukry
Keyword(s):  
Amino Acids ◽  
Relative Stability ◽  
Ternary Complex ◽  
Formation Constants ◽  
Ternary Complexes ◽  
Conductivity Measurements ◽  
Equilibrium Studies ◽  
Binary And Ternary Complexes ◽  
Binary Complexes

The formation constants of the binary and ternary complexes of palladium(II) with diethylenetriamine and amino acids as ligands have been determined potentiometrically at 25 °C in 0.1 M NaNO3 solution. The relative stability of each ternary complex was compared with that of the corresponding binary complexes in terms of ∆logK values. The mode of chelation was ascertained by conductivity measurements.

scholarly journals A Novel Index (RI) to Evaluate the Relative Stability of Soils Using Ultrasonic Agitation

2021 ◽  
Vol 13 (8) ◽  
pp. 4229
Author(s):  
Fakher Abbas ◽  
Fang Lin ◽  
Zhaolong Zhu ◽  
Shaoshan An
Keyword(s):  
Relative Stability ◽  
Characteristic Curve ◽  
Geometric Mean ◽  
Relative Strength ◽  
Soil Stability ◽  
Dispersion Energy ◽  
Ultrasonic Agitation ◽  
Mean Weight Diameter ◽  
Change In Mean ◽  
Wet Sieving

As soil stability is a complex phenomenon, various methods and indexes were introduced to assess the strength of soils. Because of the limitations of different stability methods and indexes (including wet sieving-based), we aimed to presents a relative stability index (RI) that was based on the estimated components of the soil overall disruptive characteristic curve (SODC): (1) soil disruption constant (Ki, that is based upon dispersion energy of soils); (2) resulting change in mean weight diameter (ΔMWD). To evaluate the effectiveness and limitations of RI as well as to compare it with classical soil stability indexes of mean weight diameter (MWD) and geometric mean diameter (GMD). Ultrasonic agitation (UA) along with a wet sieving method (followed by dry sieving) was applied against four different soils named on the basis of sample location, Qingling soil (QL), Guanzhong soil (GZ), Ansai soil (AS), and Jingbian soil (JB). To evaluate the relative strength of soils at different applied energies (increase in sonication duration usually resulted in increased input energy and temperature of soil–water suspension), soils were subjected to six sonication durations (0, 30, 60, 120, 210, and 300 s) with a fixed (and exact) initial amplitude and temperature. Output energy was calculated based on the amplitude and temperature of the suspension, vessel, and system. The most abrupt and maximum disruption of soil aggregates was observed at a dispersion energy level of 0–200 J g−1. The MWD value of surface and subsurface ranged between 0.58 to 0.15 mm and 0.37 to 0.17 mm, respectively, while GMD was ranged from 0.14 to 0.33 mm overall. The results for MWD and GMD showed a similar trend. MWD and GMD showed more strong associations with physicochemical characteristics of soil than RI. A non-significant correlation was found between RI and MWD/GMD. Contrary to MWD and GMD, RI was significantly positively correlated with sand content; this finding indicated the influential role of sand in assessing the soil’s relative strength. The results indicated that JB soil possessed the least MWD and GMD but proved to be relatively stable because of having the highest RI value.

A Convenient Protecting Group for Uridine Ureido Nitrogen: (4,4′-Bisfluorophenyl)methoxymethyl Group

Synthesis ◽  
2021 ◽  
Author(s):  
Michio Kurosu ◽  
Katsuhiko Mitachi ◽  
David Mingle
Keyword(s):  
Chemical Transformation ◽  
Relative Stability ◽  
Protecting Group

Abstract(4,4′-Bisfluorophenyl)methoxymethyl (BFPM) group of uridine ureido nitrogen shows good relative stability in a variety of chemical transformation reactions for uridine. The BFPM group can be cleaved by 2% of TFA in CH2Cl2 without affecting the Boc group.

scholarly journals THE RELATIVE STABILITY OF l(+)-LYSINE IN RATS STUDIED WITH DEUTERIUM AND HEAVY NITROGEN

1941 ◽  
Vol 140 (3) ◽  
pp. 779-795
Author(s):  
Norman Weissman ◽  
Rudolf Schoenheimer
Keyword(s):  
Relative Stability ◽  
Heavy Nitrogen

Photoelectron Spectroscopy and Theoretical Study of AlnC5-/0 (n = 1-5) clusters: Structural Evolution, Relative Stability of Star-Like Cluster, and Planar Tetracoordinate Carbon Structure

2021 ◽  
Author(s):  
Chao-Jiang Zhang ◽  
Peng Wang ◽  
Xi-Ling Xu ◽  
Hong-Guang Xu ◽  
Weijun Zheng
Keyword(s):  
Gas Phase ◽  
Photoelectron Spectroscopy ◽  
Relative Stability ◽  
Theoretical Study ◽  
Structural Evolution ◽  
Carbon Structure ◽  
Anion Photoelectron Spectroscopy

The AlnC5- (n = 1-5) clusters were detected in the gas-phase and were investigated by mass-selected anion photoelectron spectroscopy. The structures of AlnC5-/0 (n = 1-5) were explored by theoretical...

Festival Glasperlenspiel, Estonia. Tartu 9–15 July 2020 and Saaremaa 15–18 July 2020.

Tempo ◽  
2020 ◽  
Vol 75 (295) ◽  
pp. 95-96
Author(s):  
Lauri Supponen
Keyword(s):  
Relative Stability ◽  
25Th Anniversary ◽  
Music Festivals ◽  
Public Events

Although 2020 will mostly be remembered as a period of hiatus for music festivals, a period of relative stability during the summer in Estonia enabled the festival Glasperlenspiel to hold most of its 25th anniversary programme. The strict restrictions on travel and gatherings (limited to 2 people in March) were eased in May when Covid cases in Estonia went under 10 per 100,000. Travel from Finland opened without restrictions on June 15, and the festival organisers knew in May that public events would again be allowed as of July 1. They were cutting it rather close, as until 30 June public events were completely prohibited.

scholarly journals Relative Stability of Electrical into Mechanical Conversion with BLDC Motor-Cascade Control

Energies ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 704
Author(s):  
Sylwester Sobieraj ◽  
Grzegorz Sieklucki ◽  
Józef Gromba
Keyword(s):  
Transfer Function ◽  
Relative Stability ◽  
Power Supply System ◽  
Theoretical Calculations ◽  
Electrical Energy ◽  
Cascade Control ◽  
Bldc Motor ◽  
Cascade System ◽  
Loop Transfer Function ◽  
Basic Parameters

The conversion of the electrical energy into the mechanical is usually realized by a motor, power electronics and cascade control. The relative stability (Θ-stability), i.e., the displacement of its eigenvalues of this system is analyzed for a drive with a BLDC motor. The influence of changing the basic parameters of the motor and power supply system on the drive operation is considered. 4th order closed-loop transfer-function of the cascade control is presented, where boundaries of the transfer-function coefficients are used. The cascade system which uncertainty of the resistance, inductance, flux and gain parameters is analyzed. Theoretical calculations for the cascade control, simulations and laboratory tests are included in the article.

scholarly journals Identification of isocyclosporins by collision-induced dissociation of doubly protonated species

Talanta ◽  
2021 ◽  
Vol 225 ◽  
pp. 121930
Author(s):  
Anna A. Baranova ◽  
Alexey A. Chistov ◽  
Maxim V. Shuvalov ◽  
Anton P. Tyurin ◽  
Mikhail V. Biryukov ◽  
...  
Keyword(s):  
Collision Induced Dissociation ◽  
Protonated Species

 Time until union in absolute vs. relative stability MIPO plating in simple humeral shaft fractures

2021 ◽  
Author(s):  
Ignacio Rellán ◽  
Gerardo Luis Gallucci ◽  
Agustin Guillermo Donndorff ◽  
Pablo De Carli ◽  
Ezequiel Ernesto Zaidenberg ◽  
...  
Keyword(s):  
Relative Stability ◽  
Humeral Shaft ◽  
Humeral Shaft Fractures ◽  
Shaft Fractures
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