Use of water-based carbonyl-functional polymers on a cross-linker-free highperformance leather finish
The present paper aims to study a new high-performance coating formulation while avoiding the use of cross-linkers. 
By using acrylic polymers with carbonyl functional groups, the negative environmental effects of the finishing process can be minimized. These new polymers can give very good physical properties without losing the inherent properties 
of flexibility and elasticity needed in upholstery leather
Nubuck finishing with water-based carbonyl - Functional polymers
The process of leather finishing causes environmental pollution. It produces both wastewaters and emissions to atmosphere. 1 The present paper details the study of a new coating formulation intended to minimize the negative environmental effects of this process. This study tests an alternative method of nubuck finishing imitating full grain using using water-based carbonyl-functional polymers and micro-dispersed pigments. These new polymers can achieve very good physical properties without losing the inherent properties of flexibility and elasticity. The application of these new products together with micro-dispersed pigments enables the reduction of the amount of products needed and, therefore, makes it possible to reduce wastewaters and atmospheric emissions. The leather finished using this new coating formulation is soft, with a very natural handle; with only 0.02mm thick coating, all the necessary requirements for leather goods are met and, most importantly, a great capacity for covering defects is achieved.
The Categorical Stability of Gambling Motives Among Community-Recruited Gamblers: A Longitudinal Assessment
Over the past decade, several motivational models have been proposed to explain the role of motives in gambling disorder. In the model captured by the four-factor Gambling Motives Questionnaire Financial (GMQ-F), gamblers are described as being primarily motivated to gamble for ‘coping’, ‘enhancement’, ‘social’, and ‘financial’ reasons. Although this model has received significant empirical support; to date, research assessing the role of motives in gambling disorder has been primarily cross-sectional in nature. Thus, the extent to which gambling motives remain stable over time has yet to be explored. In the current study, the stability versus fluidity of self-assessed gambling motives was investigated using the Quinte Longitudinal Study, a longitudinal dataset of gambling behaviour collected over 5 years. Gambling motives of 2795 gamblers were examined over all five annual assessments. The total proportion of gamblers who stayed in the same primary motive category across each of the 5 consecutive assessments was 22%, indicating substantial fluidity in category membership. Substantial movement between categories was seen for each GMQ-F group, as well as an additional group of non-classified motives. Logistic regression analyses suggest that greater resistance to gambling fallacies significantly predicted stability between the baseline assessment and a follow-up 1 year later, but gambling severity did not. Potential limitations in the study design and opportunities for future research are discussed.