Alkoxide-functionalized N-heterocyclic carbenes (NHCs) stabilise the potassium-imidazole-2-ylidene fragment against 1,2 alkyl rearrangement reactions; this allows the first structural characterisation of a potassium NHC complex, which reveals distorted and unusual bonding interactions between the imidazole ring and the potassium cation.

Increased vascular calcification and tortuosity are rather common in end-stage renal failure patients who are on hemodialysis. It renders manipulation of catheters and performance of percutaneous transluminal interventions more difficult than expected. Such vascular alterations may be evident in large veins and pose significant difficulties in placement of pacing leads as shown in our case. To ...

the present study aimed to explore (a) if there is any relationship between efl teachers’ self-regulatory and their resiliency, (b) if there is any relationship between efl teachers’ self-regulatory and their genders, and (c) if there is any relationship between efl teachers’ self-regulatory and years of teaching experience. through a convenience method of sampling, the first group of participa...

The energy of signed graph is the sum of the absolute values of the eigenvalues of its adjacency matrix. Two signed graphs are said to be equienergetic if they have same energy. In the literature the construction of equienergetic signed graphs are reported. In this paper we obtain the characteristic polynomial and energy of the join of two signed graphs and thereby we give another construction ...

Two digraphs of same order are said to be skew-equienergetic if their skew energies are equal. One of the open problems proposed by Li and Lian was to construct non-cospectral skew-equienergetic digraphs on n vertices. Recently this problem was solved by Ramane et al. In this  paper, we give some new methods to construct new skew-equienergetic digraphs.

self-concept component and its relationship with family structure and perceived parental rearing practices was examined in a sample of 163 adolescents ( 87 girls and 76 boys, aged 16 years old) selected randomly from high schools in tabriz. the subjects completed tennessee self-concept scale with 84 items and a 77-item inventory measuring parental rearing practices. results revealed no signific...

self-management has been a point of discussion among number of researchers. the teacher can manage discipline in the class by employing self-management strategies. furthermore, it can also help students in managing their behaviors for long periods of time. organizations need people who are more willing to work and adhere to the requirements on their own. they must understand how they can make b...

background chronic heart failure (chf) is associated with unpredictably increased prevalence of hospital admissions. self-care is one of the most important aspects of management for patients with chf. self-care adequacy has led to increased satisfaction, independence in daily activities, reduced stress, and morbidity. objectives we aimed to assess the relationship between self-care behavior and...

background and purpose: regarding the role of body image and self-esteem in mental health in women, research examined the mediating role of self-esteem and body image in relation to the self-compassion and mental health in female students research method: the population is composed of girl students of payam noor of delfan city. for this purpose, 280 students were selected by random cluster samp...