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This study investigates carbon-nitrogen thin films as active materials in photocatalytic methanol reforming, addressing the need for eco-friendly fuels with minimal waste and non-metallic photocatalysts. Additionally, it explores the synthesis of these materials using plasma-enhanced chemical vapor deposition (PECVD) from acrylonitrile or acetonitrile. This area has limited prior attention in carbon-nitrogen materials synthesis, particularly with subsequent application in methanol reforming offering potential advancements in clean energy production. The aim is to develop effective, environmentally friendly sources of hydrogen, where photocatalysts play a crucial role. The studies involved also characterization for morphology, and chemical structure. The results confirmed the activity in hydrogen production through methanol reforming, achieving a promising rate of 82 ± 6 μmol h−1 cm−2. [Display omitted] • Facile preparation of carbon-nitrogen films by cold plasma. • Non-metallic carbon-nitrogen catalysts for hydrogen production. • Hydrogen production rate of 32–82 μmol h−1 cm−2 over studied materials. [ABSTRACT FROM AUTHOR]

Objective: 1. To find out the prevalence of gastroperesis and of accelerated gastric emptying in long-standing and recently diagnosed diabetic patients. 2. and to determine the relationship between the percentage of gastric retention of the test meal to the gastric symptoms, degree of metabolic control, cardiovascular autonomic neuropathy, and late diabetic complication., Research Design and Methods: We studied the gastric emptying of technetium labeled digestible solid test meal in 81 diabetic patients (51 long-standing and 30 recently diagnosed diabetic patients) and in 44 healthy controls. Diabetic patients were divided roto 2 groups according to the type and duration of diabetes. All patients were evaluated for gastric symptoms, glycemic control, peripheral neuropathy, retinopathy and cardiovascular autonomic neuropathy., Results: Delayed gastric emptying was found in 21 long-standing diabetic patients and in 3 recently diagnosed type 2 diabetic patients. Accelerated gastric emptying was found in 10 patients mainly recently diagnosed type 2 diabetic patients. The rate of gastric emptying was related to CANP but not gastric symptoms or actual glycemic control., Conclusions: 1. Diabetics gastroparesis is a common disorder affecting both type 1 and type 2 long-standing diabetes mellitus in about 40% usually in the setting of late diabetic complications and can be manifested in recently diagnosed type 2 diabetes mellitus. 2. Accelerated gastric emptying is another gastrointestinal disorder manifested in about 20% of recently diagnosed diabetic patients (maimy type 2) but can be present in long-standing diabetic patients. 3. The rate of gastric emptying is related to cardiovascular autonomic neuropathy but not to gastric symptoms or actual metabolic control.