52 research outputs found
Checklist and distribution of the liverworts of the Andasibe (PĂ©rinet) region (Madagascar)
This updated checklist of Marchantiophyta (liverworts) of Andasibé (Périnet) region, Madagascar was compiled from the literature, from herbarium specimens and recent collections. A total of 222 species including 9 infraspecific taxa, from 62 genera are recorded. Five species: Cheilolejeunea ngongensis Malombe et Pócs, Cheilolejeunea unciloba (Lindenb.) Malombe, Heteroscyphus grandistipus (Steph.) Schiffn., Lejeunea angulifolia Mitt. and Kymatocalyx africanus Våna et Wigginton are newly reported for Madagascar. Detailed informations on species occurrences are provided as a basis for subsequent research on species distributions and conservation
A review on thermal degradation of polylactic acid (PLA)/polyhydroxybutyrate (PHB) blends
International audienc
Do DSM-5 substance use disorder criteria differ by user care settings? An item response theory analysis approach
Aim : To examine differences in the psychometric characteristics of diagnostic criteria for Substance Use Disorders (SUD) between substance users in harm reduction settings (HR) and substance users seeking treatment (Tx). Methods Differential Item and Test Functioning (DIF & DTF) analysis were performed to examine differences in the difficulty of endorsement and in discrimination of the 11 diagnostic criteria and to test if the criteria set as a whole (the âtestâ) functioned differently by care settings (Tx vs. HR) for alcohol, cocaine, cannabis, opiates and tobacco. To test uniform and nonuniform DIF, multiple indicator multiple cause (MIMIC) structural equation models were used. Results Regardless of the substance, the DSM-5 criteria âcravingâ, âlarge amountâ, âtime spentâ, âtoleranceâ and âactivities given upâ had similar functioning by care settings. Little evidence for DIF was found for other criteria. The criteria set as a whole did not function differently by care settings for alcohol, cocaine and tobacco. At the same trait severity, compared to HR, the Tx subgroup had a greater number of endorsed criteria for cannabis and a smaller number of endorsed criteria for opioids. Conclusion The unidimensionality of the 11 DSM-5 criteria and applicability of all criteria and diagnosis was confirmed in this large sample of problematic substance users. While the majority of the criteria related to loss of control of substance use, functioned well in both care settings, the criteria related to consequences of substance use had several differential functioning
Do DSM-5 substance use disorder criteria differ by user care settings? An item response theory analysis approach
Aim : To examine differences in the psychometric characteristics of diagnostic criteria for Substance Use Disorders (SUD) between substance users in harm reduction settings (HR) and substance users seeking treatment (Tx). Methods Differential Item and Test Functioning (DIF & DTF) analysis were performed to examine differences in the difficulty of endorsement and in discrimination of the 11 diagnostic criteria and to test if the criteria set as a whole (the âtestâ) functioned differently by care settings (Tx vs. HR) for alcohol, cocaine, cannabis, opiates and tobacco. To test uniform and nonuniform DIF, multiple indicator multiple cause (MIMIC) structural equation models were used. Results Regardless of the substance, the DSM-5 criteria âcravingâ, âlarge amountâ, âtime spentâ, âtoleranceâ and âactivities given upâ had similar functioning by care settings. Little evidence for DIF was found for other criteria. The criteria set as a whole did not function differently by care settings for alcohol, cocaine and tobacco. At the same trait severity, compared to HR, the Tx subgroup had a greater number of endorsed criteria for cannabis and a smaller number of endorsed criteria for opioids. Conclusion The unidimensionality of the 11 DSM-5 criteria and applicability of all criteria and diagnosis was confirmed in this large sample of problematic substance users. While the majority of the criteria related to loss of control of substance use, functioned well in both care settings, the criteria related to consequences of substance use had several differential functioning
Silicon: A flexible material for bendable electronics and sensors
International audienceDirectly crystallized deposited silicon at low temperature is shown to be the right material when bendable system including treatment electronics and sensing functions is needed. This is true particularly when process reproducibility, electrical and mechanical reliability of the devices are the most important parameters implying the success of the technology. Indeed, these parameters are the main issues when we need to go beyond the publication of a paper, towards actual commercial application. Electrical and mechanical performances of microcrystalline silicon thin film transistors and deformation sensors on 25 Όm thick flexible plastics under high bending, still 0.75 mm curvature radius, are presented. These devices are fabricated directly on this substrate at a maximum temperature of 180°C. © 2016 IEEE
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