New Methods of Teaching Natural Sciences – „Design Understanding – Developing the Lesson Backwards“

2021 ◽  
Vol 23 (4) ◽  
pp. 399-406
Author(s):  
Irena Kocheva ◽  
Keyword(s):  
Natural Sciences ◽  
Teaching Science ◽  
Design Approach ◽  
Educational Standards ◽  
Understanding By Design ◽  
New Methods ◽  
Interdisciplinary Project ◽  
Three Stages

The article demonstrates how to apply new methods of teaching science by planning the lesson “backwards” and developing an interdisciplinary project, based on educational standards and curricula. The “Understanding by design” approach is applied in the planning of the activity in three stages: identification of the desired results, determination of acceptable evidence and development of the project.

Changes of some sewage sludge parameters prepared with an ultrasonic field

1997 ◽  
Vol 36 (11) ◽  
pp. 101-106 ◽  
Author(s):  
January Bien ◽  
Lidia Wolny
Keyword(s):  
Sewage Sludge ◽  
Microscopic Analysis ◽  
Chemical Compounds ◽  
Ultrasonic Field ◽  
Water Removal ◽  
Vacuum Filter ◽  
Additional Criterion ◽  
New Methods ◽  
Sludge Conditioning

Studies of sewage sludge conditioning by ultrasonic field concentrate on determination of the increase of water removal effect, which depends on kind of sludge and chemical compounds used in the dewatering process. An attempt was made to find new methods of sludge preparation before dewatering. Tests presented here focused on digested and difficult dewatered sludge. The sludge was dewatered on a vacuum filter after conditioning with polyelectrolytes and the ultrasonic field. The microscopic analysis was an additional criterion to evaluate changes in the sludge structure after preparation. The polyelectrolyte dose of 3 mg/g d.m. sonicated within 15 sec. resulted in the 50% decrease of sludge volume. Results presented confirmed our previous experiences, concerning the relation between conglomerates of sludge and the effect of dewatering.

scholarly journals Rapid Organocatalytic Chirality Analysis of Amines, Amino Acids, Alcohols, Amino Alcohols and Diols with Achiral Iso(thio)cyanate Probes

2021 ◽  
Author(s):  
Eryn Nelson ◽  
Jeffrey S. S. K. Formen ◽  
Christian Wolf
Keyword(s):  
Amino Acids ◽  
Absolute Configuration ◽  
Rapid Determination ◽  
Amino Alcohols ◽  
Enantioselective Synthesis ◽  
Widespread Occurrence ◽  
Chiral Compounds ◽  
New Methods ◽  
The Absolute

The widespread occurrence and significance of chiral compounds does not only require new methods for their enantioselective synthesis but also efficient tools that allow rapid determination of the absolute configuration,...

scholarly journals Multiplexed Plasmonic Nano-Labeling for Bioimaging of Cytological Stained Samples

Cancers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 3509
Author(s):  
Paule Marcoux-Valiquette ◽  
Cécile Darviot ◽  
Lu Wang ◽  
Andrée-Anne Grosset ◽  
Morteza Hasanzadeh Kafshgari ◽  
...  
Keyword(s):  
Accurate Determination ◽  
Cell Types ◽  
Fine Needle Biopsy ◽  
Dark Field ◽  
Imaging Method ◽  
New Methods ◽  
Formalin Fixed Paraffin ◽  
Dark Field Microscopy ◽  
Formalin Fixed Paraffin Embedded

Reliable cytopathological diagnosis requires new methods and approaches for the rapid and accurate determination of all cell types. This is especially important when the number of cells is limited, such as in the cytological samples of fine-needle biopsy. Immunoplasmonic-multiplexed- labeling may be one of the emerging solutions to such problems. However, to be accepted and used by the practicing pathologists, new methods must be compatible and complementary with existing cytopathology approaches where counterstaining is central to the correct interpretation of immunolabeling. In addition, the optical detection and imaging setup for immunoplasmonic-multiplexed-labeling must be implemented on the same cytopathological microscope, not interfere with standard H&E imaging, and operate as a second easy-to-use imaging method. In this article, we present multiplex imaging of four types of nanoplasmonic markers on two types of H&E-stained cytological specimens (formalin-fixed paraffin embedded and non-embedded adherent cancer cells) using a specially designed adapter for SI dark-field microscopy. The obtained results confirm the effectiveness of the proposed optical method for quantitative and multiplex identification of various plasmonic NPs, and the possibility of using immunoplasmonic-multiplexed-labeling for cytopathological diagnostics.

scholarly journals Manjing : Proses Regenerasi Pengrajin Marmer

2020 ◽  
Vol 4 (1) ◽  
pp. 1-10
Author(s):  
Adin Ariyanti Dewi ◽  
Umi Dayati ◽  
Ach Rasyad
Keyword(s):  
Qualitative Research ◽  
Data Analysis ◽  
Informal Education ◽  
Cultural Inheritance ◽  
Data Display ◽  
Small Step ◽  
Time Extension ◽  
Technological Developments ◽  
Three Stages

AbstrakPewarisan budaya menjadi langkah kecil untuk dapat terus melestarikan budaya di suatu daerah. Namun, perkembangan teknologi terkadang mampu menggeser upaya pewarisan budaya tersebut. Penelitian ini bertujuan untuk mendeskripsikan proses pewarisan budaya keterampilan dalam pembuatan kerajinan marmer melalui kegiatan “manjing”. Penelitian ini menggunakan metode penelitian kualitatif melalui studi fenomenologi. Pengumpulan data dilakukan melalui teknik observasi, wawancara, dan dokumentasi. Analisis data dilakukan dengan menggunakan tiga tahap yakni (1) reduksi data, (2) display data, dan (3) penarikan kesimpulan. Penentuan keabsahan data dengan menggunakan teknik perpanjangan waktu penelitian dan triangulasi. Hasil penelitian menunjukkan bahwa kegiatan manjing dilakukan secara rutin. Proses pewarisan dilakukan oleh pengrajin marmer junior mulai dari upaya mengamati, menirukan, dan mempraktekkan hal-hal apa saja yang dilakukan oleh pengrajin marmer senior. Proses pewarisan budaya difokuskan pada kreativitas pembuatan kerajinan marmer. Upaya ini terdapat unsur pembelajaran di dalamnya, dalam konsep pendidikan kemudian proses ini termasuk dalam ranah pendidikan informal.AbstractCultural inheritance is a small step to be able to continue to preserve culture in an area. However, technological developments are sometimes able to shift the effort of cultural inheritance. This study aims to describe the process of cultural inheritance of skills in making marble crafts through "manjing" activities. This research uses qualitative research methods through phenomenology studies. Data collection is done through observation, interview, and documentation techniques. Data analysis was performed using three stages namely (1) data reduction, (2) data display, and (3) conclusion drawing. Determination of the validity of the data by using research time extension and triangulation techniques. The results showed that the Manjing activities were carried out routinely. The process of inheritance is carried out by junior marble craftsmen from the effort of observing, imitating, and practicing what things are done by senior marble craftsmen. The process of cultural inheritance is focused on the creativity of making marble handicrafts. This effort has an element of learning in it, in the concept of education then this process is included in the realm of informal education.

scholarly journals Unknown Knowns: Case Studies in Uncertainties in the Computation of Thermochemical Parameters

2020 ◽  
Author(s):  
John Simmie
Keyword(s):  
Heat Capacity ◽  
Gas Phase ◽  
Basis Set ◽  
Statistical Thermodynamic ◽  
Vibrational Modes ◽  
Heavy Atoms ◽  
New Methods ◽  
Formation Enthalpies ◽  
Thermochemical Parameters

<div>Both the computation of, and the uncertainties associated, with gas-phase molar formation enthalpies are now quite well established for systems comprised of tens of ‘heavy’ atoms chosen from the commonest elements. The same cannot be said for derived thermochemical quantities such as entropy, heat capacity and an enthalpy function. Whilst the application of well known statistical thermodynamic relations is mostly understood, the determination of the uncertainty with which such values can be obtained has been little studied — apart, that is, for a general protocol devised by Goldsmith et al. [J. Phys. Chem. A, 2012, 116, 9033–9057]. Specific examples from that work are explored here and it is shown that their estimates are overly pessimistic. It is also evident that for some species the calculated thermochemical parameters show very little variation with either the level of theory, or basis set, or treatment of vibrational modes — this renders the inclusion of such species in databases designed to validate new methods of limited value.<br></div>

scholarly journals IMPLEMENTATION OF SIMPLE ADDITIVE WEIGHTING METHOD IN THE DETERMINATION SYSTEM OF THESIS SUPERVISOR

2021 ◽  
Vol 23 (2) ◽  
pp. 133-141
Author(s):  
Renny Puspita Sari ◽  
Ferdy Febriyanto ◽  
Ibnur Rusi
Keyword(s):  
Higher Education ◽  
Information Systems ◽  
Higher Education Institutions ◽  
Natural Sciences ◽  
Weighting Method ◽  
Weight Value ◽  
Determination System ◽  
Simple Additive Weighting

Majors are part of higher education institutions that a very important role determining the thesis student supervisor . At the Department of Information Systems, Faculty of Mathematics and Natural Sciences (MIPA) the determination of the thesis supervisor is carried out through a lecturer meeting based on its title in accordance with the competence of the lecturer who will guide, regardless of the number of lecturers' workload or the number of students being supervised. The results of the decision of the meeting to determine the supervisors will be announced to students after the meeting is held. This flow inefficient and may lead to ineffective determination of the supervisor . The final result of the system shows that the Simple Additive Weighting (SAW) method can be applied to determine the weight value of each attribute so as to produce a ranking of each alternative lecture who will be selected as a student supervisor for the thesis according to the result of computerized and accurate calculations.

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