Search results for " lead"
showing 10 items of 499 documents
On the Shape-Selected, Ligand-Free Preparation of Hybrid Perovskite (CH3NH3PbBr3) Microcrystals and Their Suitability as Model-System for Single-Crys…
2021
Hybrid perovskite materials are one of the most promising candidates for optoelectronic applications, e.g., solar cells and LEDs, which can be produced at low cost compared to established materials. Although this field of research has seen a huge upsurge in the past decade, there is a major lack in understanding the underlying processes, such as shape-property relationships and the role of defects. Our aerosol-assisted synthesis pathway offers the possibility to obtain methylammonium lead bromide (MAPbBr3 ) microcrystals from a liquid single source precursor. The differently shaped particles are aligned on several substrates, without using a directing agent or other additives. The obtained …
Targeting the Class A Carbapenemase GES-5 via Virtual Screening
2020
The worldwide spread of &beta
Transformational Parenting Style, Autonomy Support, and their Implications for Adolescent Athletes’ Burnout
2019
espanolEl objetivo de esta investigacion fue examinar las relaciones entre el estilo parental transformacional, el apoyo a la autonomia mostrado por madres y padres y el burnout deportivo de 360 jugadores de futbol juvenil (324 hombres, rango de edad = 12-18 anos). Para ello, se siguieron cuatro pasos. Los pasos 1 y 2 pusieron a prueba las propiedades psicometricas (i.e., estructura factorial, consistencia interna y evidencia de validez discriminante) de la version en espanol del Cuestionario de Estilo Parental Transformacional [TPQ, segun sus siglas en ingles] y a traves de los pasos 3 y 4 se examinaron las relaciones propuestas. En general, la version espanola del TPQ espanol demostro una…
Interactive Multiobjective Optimization in Lot Sizing with Safety Stock and Safety Lead Time
2021
In this paper, we integrate a lot sizing problem with the problem of determining optimal values of safety stock and safety lead time. We propose a probability of product availability formula to assess the quality of safety lead time and a multiobjective optimization model as an integrated lot sizing problem. In the proposed model, we optimize six objectives simultaneously: minimizing purchasing cost, ordering cost, holding cost and, at the same time, maximizing cycle service level, probability of product availability and inventory turnover. To present the applicability of the proposed model, we consider a real case study with data from a manufacturing company and apply the interactive NAUTI…
Collaboration between non-governmental organizations and educational leaders in capacity development in rural South Africa
2013
Skills development has been a point of urgency since the advent of progressive governance in democratic South Africa. Despite many efforts through the National Skills Development Strategies and partnerships, the situation still remains worrisome especially in rural context. The study aimed to identify how the NGOs and education leaders collaborate in skills development, its impact, and possible ways of optimizing such practices. A methodology that considers the perspectives of individuals experiencing the phenomenon was invoked. Accordingly, this study exploits the phenomenological approach. Participants were purposely selected from Sector Education Training Authorities and NGOs involved in…
Evaluation of adsorption ability of Cyclodextrin-Calixarene Nanosponges towards Pb2+ ion in aqueous solution
2021
Abstract Different cyclodextrin-calixarene nanosponges (CyCaNSs) have been characterized by means of FFC-NMR relaxometry, and used as sorbents to remove Pb2+ ions from aqueous solutions. Considering that the removal treatments may involve polluted waters with different characteristics, the adsorption experiments were performed on solutions without and with the addition of background salts, under different operational conditions. The adsorption abilities and affinities of the nanosponges towards Pb2+ ions were investigated by measuring the metal ion concentration by means of Inductively Coupled Plasma Emission Spectroscopy (ICP-OES) and Differential Pulse Anodic Stripping Voltammetry (DP-ASV…
Mujeres, trabajo y asociación rural
2019
Career opportunities and benefits for young oncologists in the European Society for Medical Oncology (ESMO)
2016
The European Society for Medical Oncology (ESMO) is one of the leading societies of oncology professionals in the world. Approximately 30% of the 13 000 ESMO members are below the age of 40 and thus meet the society's definition of young oncologists (YOs). ESMO has identified the training and development of YOs as a priority and has therefore established a comprehensive career development programme. This includes a leadership development programme to help identify and develop the future leaders in oncology. Well-trained and highly motivated future generations of multidisciplinary oncologists are essential to ensure the optimal evolution of the field of oncology with the ultimate goal of pro…
Ambidextrous Leadership, Social Entrepreneurial Orientation, and Operational Performance
2019
In the knowledge era, new forms of organizing and managing firms emerge to adapt to new situations. One such new form of organizational management is ambidextrous leadership. Ambidextrous leadership combines opening leader behaviors, such as promoting creativity, and closing leader behaviors, such as accomplishing objectives and adhering to norms. Thus, the aim is to demonstrate that a social orientation is not at odds with measures of operational performance other than profitability. The purpose of this study is to examine how ambidextrous leadership is linked to social entrepreneurial orientation and how this in turn affects operational performance. This is done through a rigorous review …
Supervisors’ relational transparency moderates effects among employees’ illegitimate tasks and job dissatisfaction: a four-wave panel study
2019
Despite repeated calls for the inclusion of leadership in research on illegitimate tasks, little is known about what supervisors can actually do to mitigate negative effects of illegitimate tasks. ...