Nanosized CdSe Particles Synthesized by an Air Pressure Solution Process Using Ethylene-Glycol-Based Solvent

2010 ◽  
pp. no-no
Author(s):  
Tao Wang ◽  
Zhengguo Jin ◽  
Tongjun Liu ◽  
Wenle Li ◽  
Yong Ni
Keyword(s):  
Ethylene Glycol ◽  
Solution Process ◽  
Air Pressure ◽  
Pressure Solution

Microfaulting by early diagenesis of micritic continental carbonates - dilatant and compactive shear localization (Montpellier area, France)

2020 ◽  
Author(s):  
Grégory Ballas ◽  
Flavia Girard ◽  
Yannick Caniven ◽  
Roger Soliva ◽  
Bernard Celerier ◽  
...  
Keyword(s):  
Solution Process ◽  
Shear Localization ◽  
Early Diagenesis ◽  
Pressure Solution ◽  
Density Inversion ◽  
Calcite Precipitation ◽  
Vertical Loading ◽  
Basin Subsidence ◽  
Continental Carbonates ◽  
Normal Sense

<p>Microfaults formed in continental carbonates reveal poorly known mechanisms of shear localization induced by early diagenesis during compaction. These faults are characterized by sinuous shape, bed-controlled, pervasive distribution, no calcite precipitation, and mainly disaggregation processes. Two main sets were described: (1) The first set is composed by normal-sense, high-angle microfaults affecting the top of carbonate beds showing undulating pedogenic bed surface. They show porosity increase and are sometimes organized in polygonal patterns. Their occurrence seems related to overconsolidation of pedogenic surface and density inversion – phreatic loading – fluid expulsion processes in the surficial carbonate bed. (2) The second set is composed by low-angle compactive microfaults with large slickenlines and incipient shear-offset. Their organization within two conjugate systems (normal-sense set and strike-slip set) almost contemporaneous is consistent with a NS extension following the slope induced by the basin subsidence to the south. Their occurrence seems related to vertical loading below few meters depth and occurred by shear-enhanced compaction and incipient pressure-solution process. The presence of such structures gives news information concerning dilatant or compactive shear processes and rheological properties of micritic carbonates during early diagenesis.</p><p> </p>

A facile method for synthesis of SnS2 with different morphologies by an ambient pressure tetraethylene glycol solution process

2019 ◽  
Vol 201 (1) ◽  
pp. 224-230
Author(s):  
Xuerong Zheng ◽  
Jing Mao ◽  
Jingjing Zhou ◽  
Huiming Ji
Keyword(s):  
Optical Properties ◽  
Chemical Process ◽  
Ambient Pressure ◽  
Solution Process ◽  
Stannic Chloride ◽  
Tetraethylene Glycol ◽  
Pressure Solution ◽  
Capping Agent ◽  
Pure Phase ◽  
Glycol Solution

An ambient pressure solution chemical process was used for synthesis of SnS2 nanocrystals with different morphologies such as nanoparticles, nanosheets, nanospheres and so on. The process was conducted by using diethylene glycol as solvent, stannic chloride and thioacetamide as precursors, polyvinylpyrrolidone as capping agent. The influence of synthesized temperature and reducing agent on the morphologies and phases of product were investigated based on XRD, TEM, HRTEM and EDX. Optical properties of SnS2 nanocrystals were characterized. The results showed that pure phase, ultrathin SnS2 nanosheets were prepared with few polyvinylpyrrolidone exited.

Signal Interpretation Considerations When Estimating Subglottal Pressure From Oral Air Pressure

2019 ◽  
Vol 62 (5) ◽  
pp. 1326-1337 ◽  
Author(s):  
Brittany L. Perrine ◽  
Ronald C. Scherer ◽  
Jason A. Whitfield
Keyword(s):  
Standard Condition ◽  
Word Production ◽  
Air Pressure ◽  
Pressure Waveform ◽  
Pressure Measurements ◽  
Air Leak ◽  
Pressure Signal ◽  
Adult Participants ◽  
Syllable Repetition ◽  
Subglottal Pressure

Purpose Oral air pressure measurements during lip occlusion for /pVpV/ syllable strings are used to estimate subglottal pressure during the vowel. Accuracy of this method relies on smoothly produced syllable repetitions. The purpose of this study was to investigate the oral air pressure waveform during the /p/ lip occlusions and propose physiological explanations for nonflat shapes. Method Ten adult participants were trained to produce the “standard condition” and were instructed to produce nonstandard tasks. Results from 8 participants are included. The standard condition required participants to produce /pːiːpːiː.../ syllables smoothly at approximately 1.5 syllables/s. The nonstandard tasks included an air leak between the lips, faster syllable repetition rates, an initial voiced consonant, and 2-syllable word productions. Results Eleven oral air pressure waveform shapes were identified during the lip occlusions, and plausible physiological explanations for each shape are provided based on the tasks in which they occurred. Training the use of the standard condition, the initial voice consonant condition, and the 2-syllable word production increased the likelihood of rectangular oral air pressure waveform shapes. Increasing the rate beyond 1.5 syllables/s improved the probability of producing rectangular oral air pressure signal shapes in some participants. Conclusions Visual and verbal feedback improved the likelihood of producing rectangular oral air pressure signal shapes. The physiological explanations of variations in the oral air pressure waveform shape may provide direction to the clinician or researcher when providing feedback to increase the accuracy of estimating subglottal pressure from oral air pressure.

PIEZOELECTRIC PROPERTIES OF POLY(3-HYDROXYBUTYRATE-CO-3-HEDROXYBUTYRATE)-CO-POLY(ETHYLENE GLYCOL) PRODUCED BY CONTROLLED MICROBIOLOGICAL BIOSYNTHESIS

2019 ◽  
Vol 10 (10) ◽  
Author(s):  
Anton Bonartsev ◽  
Vera Voinova ◽  
Elizaveta Akoulina ◽  
Andrey Dudun ◽  
Irina Zharkova ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Piezoelectric Properties ◽  
Poly Ethylene Glycol ◽  
Poly Ethylene
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