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Wang SH, Zhou Q, Chen KY, Ceng CQ, Zhan GD, You C, Xing Y, Zou YY, Deng HZ. Cognitive-adaptive Functioning Gap and Mediating Factors that Impact Adaptive Functioning in Chinese Preschool-aged Children with Autism Spectrum Disorder. J Autism Dev Disord 2023:10.1007/s10803-023-06029-z. [PMID: 37326789 DOI: 10.1007/s10803-023-06029-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/29/2023] [Indexed: 06/17/2023]
Abstract
This study aimed to investigate the gap between adaptive functioning and cognitive functioning, especially verbal and nonverbal intelligence quotient (IQ) in Chinese children with ASD. We systematically explored cognitive functioning, ASD severity, early signs of developmental abnormalities, and socioeconomic factors as mediating factors of adaptive functioning. We enrolled 151 children (age: 2.5?6 years) with ASD and categorized them into one group with IQ ≥ 70 and another with IQ < 70. The two groups were calibrated for age, age at diagnosis, and IQ, and the relationship of adaptive skills with vocabulary acquisition index (VAI) and nonverbal index (NVI) were separately analyzed. Results show that the gap between IQ and adaptive functioning was significant in children with ASD having IQ ≥ 70, with both VAI and NVI showing statistically significant differences (all P < 0.001). VAI correlated positively with scores for overall adaptive skills and specific domains, whereas NVI had no significant correlations with adaptive skill scores. Age of first walking unaided had an independent positive correlation (all P < 0.05) with scores of adaptive skills and specific domains. IQ-adaptive functioning gap is significant in children with ASD having IQ ≥ 70, suggesting that defining "high-functioning autism" merely on the basis of IQ is not appropriate. Verbal IQ and early signs of motor development are specific and possible predictors of adaptive functioning in children with ASD, respectively.
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Affiliation(s)
- Shi-Huan Wang
- Child Developmental and Behavioral Center, the Third Affiliated Hospital of Sun Yat-sen University, No.600, Tianhe Road, Guangzhou, 510630, China.
| | - Qing Zhou
- Department of Nursing, Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong, 510630, China
| | - Kai-Yun Chen
- Child Developmental and Behavioral Center, the Third Affiliated Hospital of Sun Yat-sen University, No.600, Tianhe Road, Guangzhou, 510630, China
| | - Chao-Qun Ceng
- Child Developmental and Behavioral Center, the Third Affiliated Hospital of Sun Yat-sen University, No.600, Tianhe Road, Guangzhou, 510630, China
| | - Guo-Dong Zhan
- Child Developmental and Behavioral Center, the Third Affiliated Hospital of Sun Yat-sen University, No.600, Tianhe Road, Guangzhou, 510630, China
| | - Cong You
- Child Developmental and Behavioral Center, the Third Affiliated Hospital of Sun Yat-sen University, No.600, Tianhe Road, Guangzhou, 510630, China
| | - Yu Xing
- Child Developmental and Behavioral Center, the Third Affiliated Hospital of Sun Yat-sen University, No.600, Tianhe Road, Guangzhou, 510630, China
| | - Yuan-Yuan Zou
- Child Developmental and Behavioral Center, the Third Affiliated Hospital of Sun Yat-sen University, No.600, Tianhe Road, Guangzhou, 510630, China
| | - Hong-Zhu Deng
- Child Developmental and Behavioral Center, the Third Affiliated Hospital of Sun Yat-sen University, No.600, Tianhe Road, Guangzhou, 510630, China.
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Abstract
We report the successful demonstration for low-temperature and high-strain-rate superplastic forming of nanoceramic composites for the first time. Porous preforms of nanoceramic composites that were partially densified at low temperatures were superplastically deformed by SPS at the record low temperatures of approximately 1000 to 1050 degrees C, which are comparable to those of Ni-based superalloys. The maximum strain rate achieved is over 10(-2) s(-1), and a compressive strain over 200% can be obtained without cracking. The final products have nanosized grains with excellent optical properties. The present findings present a new strategy for nanoceramic superplasticity, demonstrating that a more practical application of nanoceramic superplasticity is not in the shaping of already-dense materials but in the near-net-shape forming of partially dense parts.
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Affiliation(s)
- Guo-Dong Zhan
- Department of Chemical and Biological Engineering, the University of Colorado at Boulder, Boulder, CO 80309, USA.
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Zhan GD, Kuntz JD, Wan J, Mukherjee AK. Single-wall carbon nanotubes as attractive toughening agents in alumina-based nanocomposites. Nat Mater 2003; 2:38-42. [PMID: 12652671 DOI: 10.1038/nmat793] [Citation(s) in RCA: 147] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2002] [Accepted: 11/20/2002] [Indexed: 05/24/2023]
Abstract
The extraordinary mechanical, thermal and electrical properties of carbon nanotubes have prompted intense research into a wide range of applications in structural materials, electronics, chemical processing and energy management. Attempts have been made to develop advanced engineering materials with improved or novel properties through the incorporation of carbon nanotubes in selected matrices (polymers, metals and ceramics). But the use of carbon nanotubes to reinforce ceramic composites has not been very successful; for example, in alumina-based systems only a 24% increase in toughness has been obtained so far. Here we demonstrate their potential use in reinforcing nanocrystalline ceramics. We have fabricated fully dense nanocomposites of single-wall carbon nanotubes with nanocrystalline alumina (Al2O3) matrix at sintering temperatures as low as 1,150 degrees C by spark-plasma sintering. A fracture toughness of 9.7 MPa m 1/2, nearly three times that of pure nanocrystalline alumina, can be achieved.
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Affiliation(s)
- Guo-Dong Zhan
- Department of Chemical Engineering and Materials Science, One Shields Avenue, University of California, Davis, California 95616, USA
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