Production of green surfactants: Market prospects     

《Electronic Journal of Biotechnology》2021

Science has greatly contributed to the advancement of technology and to the innovation of production processes and their applications. Cleaning products have become indispensable in today’s world, as personal and environmental hygiene is important to all societies worldwide. Such products are used in the home, in most work environments and in the industrial sectors. Most of the detergents on the market are synthesised from petrochemical products. However, the interest in reducing the use of products harmful to human health and the environment has led to the search for detergents formulated with natural, biodegradable surfactant components of biological (plant or microbiological) origin or chemically synthesised from natural raw materials usually referred to as green surfactants. This review addresses the different types, properties, and uses of surfactants, with a focus on green surfactants, and describes the current scenario as well as the projections for the future market economy related to the production of the different types of green surfactants marketed in the world.How to cite: Farias CBB, Almeida FCG, Silva IA, et al. Production of green surfactants: Market prospects. Electron J Biotechnol 2021;51. https://doi.org/10.1016/j.ejbt.2021.02.002  相似文献   

Comparing cumulative index and factor analytic approaches to measuring maltreatment in the National Longitudinal Study of Adolescent to Adult Health     

《Child abuse & neglect》2019

Child maltreatment is a complex and multifaceted construct in need of advanced statistical techniques to improve its measurement. The current study compared the predictive utility of a cumulative index to a factor analytic approach for constructing a measure of maltreatment. Data were from Waves III and IV of the National Longitudinal Study of Adolescent to Adult Health (Wave III: n = 14,800; Wave IV: n = 12,288). As adults, participants retrospectively reported on their childhood experiences of physical abuse, sexual abuse, emotional abuse, physical neglect, supervisory neglect, and social services investigations. Both the cumulative index and a two-factor solution showed evidence of convergent validity, predicting lifetime incidence of homelessness, being paid for sex, and various measures of running away or living apart from biological parents, and prospectively predicting depression, substance use, and criminal behavior. The latent variables, derived from a factor analytic approach, had greater explanatory power for many outcomes compared to the cumulative index, even when controlling for sociodemographic variables. Results suggest that factor analysis is a better methodology than a cumulative index for measuring maltreatment in large datasets when explanatory power for external outcomes is of greatest concern.  相似文献   

高水平射击运动员心理选材指标的研究   总被引：9，自引：1，他引：8  

陈昱 《首都体育学院学报》2003,15(3):95-97

本文通过与射击运动紧密相关的五项心理指标：简单反应时、肩臂动作稳定性、手指本体感、智力、个性等的分析讨论，拟从高水平健将级运动员身上明确其成功潜在的心理因素，服务于运动员的科学选材。  相似文献   

当代中国立法与先进生产力的发展要求     

张巧妹 《大同职业技术学院学报》2004,(3)

当代中国立法必须反映先进生产力的发展要求。本文在广泛收集资料，借鉴理论成果，了解立法现状的基础上，力求对社会经济领域的立法进行全面、客观、辩证的认识和分析，预测发展趋势，并针对现实立法中存在的问题提出一些建设性的构想，以期在已有理论成果的基础上实现创新，推动立法的现实发展。  相似文献   

过度运动对大鼠海马脑源性神经营养因子的影响   总被引：3，自引：0，他引：3  

高颀  满君  田野 《北京体育大学学报》2004,27(9):1211-1212

观察过度运动对海马神经元脑源性神经营养因子(BDNF)的影响,探讨过度运动导致的海马神经元形态改变与BDNF的关系.大鼠6周递增负荷游泳运动后取海马制作石蜡切片,采用SABC免疫组织化学染色方法观察BDNF的变化.结果发现:过度运动后大鼠海马发生形态变化,发生结构变化的神经元的BDNF表达增加.  相似文献   

读者服务全面质量管理     

阳国华 《津图学刊》2003,(2):57-59

本文介绍了图书馆全面质量管理的的基本思想，并对读者服务工作实施全面质量管理的步骤和注意的问题进行了探讨。  相似文献   

论"绿色奥运"与环境教育     

吕亚萍 《山西师大体育学院学报》2005,20(3):7-9

再过三年，北京将迎来第29届奥林匹克运动会，随着“绿色奥运”的承诺，一步步从蓝图上隐现，环境教育逐渐进入了奥运筹备工作的议事日程。环境教育作为一门新兴的学科，它把“绿色奥运”理念视为一个进程，而不是一个“快速结果”，这不但有助于提高人们的环境意识，而且可以唤醒人们的生态论理良知。使人们树立正确的自然观、消费观、发展观、体育观，从而真正实现把北京奥运会办成历史上最出色的一届奥运会的目标。  相似文献   

绿色壁垒:我国农产品出口亟待逾越的屏障     

特克寒 《承德职业学院学报》2005,10(3):39-41

加入WTO以来,由于国外"绿色壁垒"的阻碍,我国农产品出口损失很大.本文揭示了"绿色壁垒"的种种表现及产生的原因,并提出攻克"绿色壁垒"的建议及对策.  相似文献   

网络链接分析研究进展   总被引：8，自引：1，他引：8  

张洋  邱均平  文庭孝 《图书情报知识》2004,(6):3-8

本文对网络链接分析研究的进展情况作了较为全面、详细的介绍，并分析了目前网络链接分析研究中存在的问题。  相似文献   

论彝族青棚文化     

姚利芬 《南宁师范高等专科学校学报》2013,(4):47-50

青棚是彝族人民生活中不可或缺的角色之一,从初始作为民居形式的一种到婚丧、祭祀、节日时的宴棚,再到青棚里吟唱的青棚调,青棚在这个过程中逐渐演化为习俗符码,青棚文化也由此泛起。  相似文献