采用水热合成法,以二正丙胺(DPA)和二异丙胺(DIPA)混合物为模板剂合成SAPO-11分子筛,考察了模板剂用量和混合模板剂中DPA和DIPA配比对所得产物的影响,并通过XRD、N2吸附、NH3-TPD和29Si MAS NMR等手段对样品进行了表征。结果表明,改变...采用水热合成法,以二正丙胺(DPA)和二异丙胺(DIPA)混合物为模板剂合成SAPO-11分子筛,考察了模板剂用量和混合模板剂中DPA和DIPA配比对所得产物的影响,并通过XRD、N2吸附、NH3-TPD和29Si MAS NMR等手段对样品进行了表征。结果表明,改变模板剂用量和配比不仅可以调节SAPO-11结晶度,还会改变Si在分子筛骨架上的分布,从而调节SAPO-11的酸性。当模板剂用量比为1.5,模板剂中DPA的质量分数为66%时,样品的Si区面积最小,Si(nAl)(0<n<4)结构最多。因此,分子筛酸性和对正十四烷异构活性也最高。展开更多
Background: Multiple traumatization in childhood is a broad term that includes interpersonal trauma experiences such as physical, sexual, and emotional abuse and neglect. Children with a child protection case referred...Background: Multiple traumatization in childhood is a broad term that includes interpersonal trauma experiences such as physical, sexual, and emotional abuse and neglect. Children with a child protection case referred to counseling are likely to be in high risk of multiple exposure to interpersonal trauma. We aim to demonstrate that systematic assessment with validated measures is feasible in this age group. Method: The Center for Interventions of Children and Adolescents (CIBU), Denmark, provided a new assessment screening procedure where 16 caregivers with children in the age of 4 - 8-years-old participated prior to initiating counseling in a public family treatment facility. We utilized the Diagnostic Infant Preschool Assessment (DIPA) and the Strengths and Difficulties Questionnaire (SDQ). The SDQ was compared with Danish norms. Results: The data suggest that psychopathology was present among all 16 children in this high-risk sample. Distribution of disorders showed 93.8% prevalence of comorbidity. All 16 children had difficulties regarding psychosocial functioning when compared to a Danish norm population. Most profound was emotional symptoms and symptoms of hyperactivity and inattention. Conclusion: This study revealed a higher prevalence of psychiatric disorders and higher rates of psychosocial difficulties in referred children than in children from the general population. Overall, children in this study had complex symptom profiles. Thus, a systematic approach may be helpful in public treatment facilities, and we suggest the implementation of valid evidence-based instruments.展开更多
文摘采用水热合成法,以二正丙胺(DPA)和二异丙胺(DIPA)混合物为模板剂合成SAPO-11分子筛,考察了模板剂用量和混合模板剂中DPA和DIPA配比对所得产物的影响,并通过XRD、N2吸附、NH3-TPD和29Si MAS NMR等手段对样品进行了表征。结果表明,改变模板剂用量和配比不仅可以调节SAPO-11结晶度,还会改变Si在分子筛骨架上的分布,从而调节SAPO-11的酸性。当模板剂用量比为1.5,模板剂中DPA的质量分数为66%时,样品的Si区面积最小,Si(nAl)(0<n<4)结构最多。因此,分子筛酸性和对正十四烷异构活性也最高。
文摘Background: Multiple traumatization in childhood is a broad term that includes interpersonal trauma experiences such as physical, sexual, and emotional abuse and neglect. Children with a child protection case referred to counseling are likely to be in high risk of multiple exposure to interpersonal trauma. We aim to demonstrate that systematic assessment with validated measures is feasible in this age group. Method: The Center for Interventions of Children and Adolescents (CIBU), Denmark, provided a new assessment screening procedure where 16 caregivers with children in the age of 4 - 8-years-old participated prior to initiating counseling in a public family treatment facility. We utilized the Diagnostic Infant Preschool Assessment (DIPA) and the Strengths and Difficulties Questionnaire (SDQ). The SDQ was compared with Danish norms. Results: The data suggest that psychopathology was present among all 16 children in this high-risk sample. Distribution of disorders showed 93.8% prevalence of comorbidity. All 16 children had difficulties regarding psychosocial functioning when compared to a Danish norm population. Most profound was emotional symptoms and symptoms of hyperactivity and inattention. Conclusion: This study revealed a higher prevalence of psychiatric disorders and higher rates of psychosocial difficulties in referred children than in children from the general population. Overall, children in this study had complex symptom profiles. Thus, a systematic approach may be helpful in public treatment facilities, and we suggest the implementation of valid evidence-based instruments.
