Calculation of Conditional Equilibrium in Serial Multiple Precipitation of Metal Sulfides With Hydrogen Sulfide Stream Generated From Sodium Sulfide: A Didactic Tool for Chemistry Teaching

Bellová, Renata; Tomčı́k, Peter

doi:10.5935/0100-4042.20160062

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…In Timm's method, exogenous sulphide competes for metals with a mixture of endogenous ligands 16,17,[122][123][124][125][126] . Different free metal fractions may be selected by changing the concentration of sulphide ions 127,128 , or the duration of sulphide treatment 53 . This may explain differences in staining pattern between the following three versions of Timm's method.…”

Section: Technical Validationmentioning

confidence: 99%

A Timm-Nissl multiplane microscopic atlas of rat brain zincergic terminal fields and metal-containing glia

et al. 2023

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The ability of Timm’s sulphide silver method to stain zincergic terminal fields has made it a useful neuromorphological marker. Beyond its roles in zinc-signalling and neuromodulation, zinc is involved in the pathophysiology of ischemic stroke, epilepsy, degenerative diseases and neuropsychiatric conditions. In addition to visualising zincergic terminal fields, the method also labels transition metals in neuronal perikarya and glial cells. To provide a benchmark reference for planning and interpretation of experimental investigations of zinc-related phenomena in rat brains, we have established a comprehensive repository of serial microscopic images from a historical collection of coronally, horizontally and sagittally oriented rat brain sections stained with Timm’s method. Adjacent Nissl-stained sections showing cytoarchitecture, and customised atlas overlays from a three-dimensional rat brain reference atlas registered to each section image are included for spatial reference and guiding identification of anatomical boundaries. The Timm-Nissl atlas, available from EBRAINS, enables experimental researchers to navigate normal rat brain material in three planes and investigate the spatial distribution and density of zincergic terminal fields across the entire brain.

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Section: Technical Validationmentioning

confidence: 99%

A Timm-Nissl multiplane microscopic atlas of rat brain zincergic terminal fields and metal-containing glia

et al. 2023

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The effect of the REACT strategy on students’ achievements with regard to solubility equilibrium: using chemistry in contexts

Günter

2018

Chem. Educ. Res. Pract.

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The objective of this research was to investigate the effect of a context-based approach (CBA) ‘Relating, Experiencing, Applying, Cooperating, Transferring’ (REACT) strategy used in relation to the topic of solubility equilibrium in the laboratory chemistry course on students’ achievement at associate level in a health-related program. In this regard, two contexts related to the topic of solubility equilibrium were developed and applied. The study had pre-test post-test with a control group research design and the participants consisted of sophomore students studying in the Medical Laboratory Techniques (MLT) and the Pharmacy Services (PS) Programs of the Ahmet Erdogan Vocational School of Health Services at Bulent Ecevit University (N= 96). The students enrolled in the MLT program were randomly assigned as the experimental group (n= 47) and the students in the PS program were randomly assigned as the control group (n= 49). The experimental group was taught solubility equilibrium by a CBA REACT strategy, whereas the control group was taught the relevant topic by conventional teaching. The ‘Equilibrium of Solubility Achievement Test (ESAT)’ and ‘Structured Interview Form’ were used as data collection tools in the research. The results of content analysis of ESAT post-test showed that the frequency of answers in the sound understanding category was higher for the experimental group compared to the control group students. In addition, the results of Mann–WhitneyUand Wilcoxon tests of the ESAT indicated that post-test scores were higher in both groups compared to pre-test scores and the increase was higher in the experimental group compared to the control group. The content analysis results of structured interview form and semi-structured interviews showed that the students expressed positive views concerning the instruction and the qualities of the contexts in general. In this research, it was concluded that the CBA REACT strategy used in relation to the topic of solubility equilibrium in the laboratory chemistry course improved students’ sound understanding and achievement and helped them develop positive views regarding the instruction and the quality of the contexts.

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Calculation of Conditional Equilibrium in Serial Multiple Precipitation of Metal Sulfides With Hydrogen Sulfide Stream Generated From Sodium Sulfide: A Didactic Tool for Chemistry Teaching

Cited by 2 publications

References 17 publications

A Timm-Nissl multiplane microscopic atlas of rat brain zincergic terminal fields and metal-containing glia

A Timm-Nissl multiplane microscopic atlas of rat brain zincergic terminal fields and metal-containing glia

The effect of the REACT strategy on students’ achievements with regard to solubility equilibrium: using chemistry in contexts

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