Get Reddy for Group Play!

A porous molecular crystal (PMC) assembled by close-packing of macrocyclic cyclotetrabenzoin acetate is an efficient adsorbent for selective CO2 capture. The 7.1´7.1 Å square pore of PMC and its ester C=O group play important roles in improving its affinity for CO2 molecules. Thermodynamically, the benzene walls of macrocycle strongly promote CO2 adsorption via [p···p] interactions at low pressure. In addition, the polar carbonyl groups pointing inward the square channels reduce the size of aperture to a 5.0´5.0 Å square, which offers kinetic selectivity for CO2 capture. The PMC features water tolerance and high structural stability under vacuum and various gas adsorption conditions, which are rare among intrinsically porous organic molecules. In mixed-gas breakthrough experiments, it exhibits efficient CO2/N2 and CO2/CH4 separations under kinetic flow conditions. Most importantly, the moderate adsorbate–adsorbent interaction allows the PMC to be readily regenerated, and therefore applied to pressure swing adsorption (PSA) processes. The eluted N2 and CH4 are obtained with over 99.9% and 99.8% purity, respectively, and the separation performance is stable for 30 cycles. Coupled with its easy synthesis, these properties make cyclotetrabenzoin acetate a promising adsorbent for CO2 separations from flue and natural gases.

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Lack of "Group Play" in Wild Chimpanzees

Pan Africa News ◽

10.5134/143439 ◽

2004 ◽

Vol 11 (1) ◽

pp. 2-3

Author(s):

Toshisada Nishida

Keyword(s):

Group Play

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Group Play Therapy for Preadolescents: Post-Traumatic Stress Disorder of Natural Disaster Victims in Indonesia

The Open Psychology Journal ◽

10.2174/1874350102013010213 ◽

2020 ◽

Vol 13 (1) ◽

pp. 213-222

Author(s):

Nandang Rusmana ◽

Anne Hafina ◽

Dodi Suryana

Keyword(s):

Natural Disasters ◽

Play Therapy ◽

Post Traumatic Stress Disorder ◽

Traumatic Stress ◽

Stress Disorder ◽

Post Traumatic Stress ◽

Disaster Victims ◽

Group Play Therapy ◽

Post Traumatic ◽

Group Play

Background: This study was motivated by the failure of coping and adaptation to traumatic experiences that cause a wide, deep, and long-term snowball effect that may not be reversible. Objective: This study aims to test the effectiveness of the implementation of group play therapy in dealing with post-traumatic stress disorder (PTSD) victims of natural disasters in three provinces in Indonesia. Materials and Methods: The study employed an explanatory mixed methods design. The procedures and steps taken in this study refer to the research and development cycle. The subjects and objects of the study were 106 male and 92 female preadolescent students of junior high school in three provinces in Indonesia. Results: Traumatic counselling through group play therapy techniques has the effect of reducing post-traumatic stress disorder on victims of the tsunami disaster in three provinces in Indonesia. The first study conducted in Lombok West Nusa Tenggara province obtained the results of the calculation of the value μ2 = 0.021 for the value of μ1> 0.05. The second study in Palu, Central Sulawesi Province obtained the results of the calculation of the value of μ2 = 0.018 for the value of μ1> 0.05, and the third study in Anyer, Banten province obtained the results of the calculation of the value of µ2 = 0.011 for the value of µ1 > 0.05. Conclusion: Teaching and practising the skills of traumatic counselling using using Group Play Therapy can handle PTSD victims of natural disasters that significantly change victims.

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The first 3′:5′-cyclic nucleotide–amino acid complex:L-His–cIMP

Acta Crystallographica Section C Crystal Structure Communications ◽

10.1107/s0108270112030041 ◽

2012 ◽

Vol 68 (8) ◽

pp. o311-o316 ◽

Cited By ~ 4

Author(s):

Katarzyna Ślepokura

Keyword(s):

Crystal Structure ◽

Amino Acid ◽

Cyclic Nucleotide ◽

Phosphate Group ◽

Specific Amino Acid ◽

Π Stacking ◽

Cyclic Phosphate ◽

Nucleotide Recognition ◽

Group Play ◽

Phosphate Groups

In the crystal structure of the L-His–cIMP complex,i.e.L-histidinium inosine 3′:5′-cyclic phosphate [systematic name: 5-(2-amino-2-carboxyethyl)-1H-imidazol-3-ium 7-hydroxy-2-oxo-6-(6-oxo-6,9-dihydro-1H-purin-9-yl)-4a,6,7,7a-tetrahydro-4H-1,3,5,2λ5-furo[3,2-d][1,3,2λ5]dioxaphosphinin-2-olate], C6H10N3O2+·C10H10N4O7P−, the Hoogsteen edge of the hypoxanthine (Hyp) base of cIMP and the Hyp face are engaged in specific amino acid–nucleotide (His...cIMP) recognition,i.e.by abutting edge-to-edge and by π–π stacking, respectively. The Watson–Crick edge of Hyp and the cIMP phosphate group play a role in nonspecific His...cIMP contacts. The interactions between the cIMP anions (anti/C3′–endo/trans–gauche/chair conformers) are realized mainly between riboses and phosphate groups. The results for this L-His–cIMP complex, compared with those for the previously reported solvated L-His–IMP crystal structure, indicate a different nature of amino acid–nucleotide recognition and interactions upon the 3′:5′-cyclization of the nucleotide phosphate group.

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