A Laboratory Activity for Distinguishing between K2SO4 and NaCl

1994 ◽  
Vol 71 (2) ◽  
pp. 153
Author(s):  
Stephen DeMeo
Keyword(s):  
Laboratory Activity

Benefits of Using the Invertebrate Model Organism C. Elegans in an Inquiry-Based Laboratory Activity

2021 ◽  
pp. 009862832110296
Author(s):  
Angy J. Kallarackal
Keyword(s):  
American Psychological Association ◽  
Model Organism ◽  
Learning Goals ◽  
Research Skills ◽  
Final Exam ◽  
Laboratory Activity ◽  
Writing Ability ◽  
C Elegans ◽  
Invertebrate Model ◽  
Laboratory Experiences

Background: The goals of laboratory experiences include developing knowledge base, research skills, and scientific communication abilities. Objective: The aim was to assess an inquiry-based laboratory activity using the model organism Caenorhabditis elegans in relation to learning goals. Method: Students in a Biopsychology laboratory course worked in groups to test the effect of various drugs (e.g., nicotine, ethanol, fluoxetine, and melatonin) on C. elegans behavior. The activity included literature review, experimental design, and a final lab report. A cumulative final exam included a synaptic communication question related to the content of the activity. Results: Students showed better retention of laboratory-related content compared to other topics from the course, as demonstrated through performance on the final exam and were able to replicate previous research demonstrating effects of drug on locomotion. However, students did not improve writing ability compared to performance on a previous American Psychological Association style lab report. Conclusion: This study demonstrates that using a student-designed, multi-week laboratory assignment in an undergraduate Biopsychology course supports the growth of psychology knowledge and the development of research skills. Teaching Implications: Instructors should consider using the described laboratory activity for biopsychology or behavioral neuroscience classes or consider similarly designed laboratory formats for other courses in Psychology.

Catalytic processing of organochlorine wastes into valuable monomers

2021 ◽  
pp. 41-47
Author(s):  
B. Stepasiuk ◽  
◽  
T. Haievska ◽  
O. Spaska ◽  
Yu. Bilokopytov ◽  
...  
Keyword(s):  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Radical Mechanism ◽  
Ethylene Dichloride ◽  
Experimental Development ◽  
Laboratory Activity ◽  
Catalytic Processing ◽  
Chlorinated Organic ◽  
Cis And Trans

The paper is devoted to experimental development of method for 1,1,2-trichlorethane (TCE) dehydrochlorination (DHC). The economic and environmental issues of organic chlorinated compounds processing are described. The basic principle and possible products of TCE processing are presented. The DHC of TCE, which is one of the chlorinated organic wastes produced in the ethylene dichloride process, to vinylidene chloride (VDC) was carried out over over CaO, MgO supported on SiO2 and modified with CsCl catalysts. This process was carried out in a continuous flow fixed-bed reactor. The prepared catalysts were characterized by surface area and base properties before/after reaction. The methodology for determining properties of catalyst is described. Laboratory activity test apparatus was developed, and the schematic diagram is presented in the paper. The method of determination of TCE concentration of was calculated from its partial saturation vapor pressure at a given temperature is presented. Encouraging results were obtained on the catalyst containing 10 % CsCl/CaO·SiO2. The direction of the DHC reaction changed radically under described conditions: VDC was not formed at all and the major products were cis- and trans-1,2-dichloroethene. Interesting results were obtained with the catalytic system comprising 10 % (MgO-CsCl) (1:1) supported on SiO2. DHC of 2 % TCE/Ar at 302 °C proceeds quantitatively over 20 h with selectivity for VDC of more than 80%. These systems are suitable to study the factors providing the binding and removal of HCl from the reaction zone. A possible way to increase the selectivity for VDC is the creation of the conditions favoring the DHC of TCE into VDC by the radical mechanism, which was observed in experiments with 10% CsCl/CaSiO3. The directions for future researches are formulated and described.

CHRONIC ATYPICAL NEUTROPHILIC DERMATOSIS WITH LIPODYSTROPHY AND FEVER (CANDLE SYNDROME) IN PEDIATRIC PRACTICE

2021 ◽  
Vol 100 (2) ◽  
pp. 254-261
Author(s):  
O.G. Sukhovjova ◽  
◽  
I.A. Ivanova ◽  
N.A. Kalugina ◽  
E.S. Zholobova ◽  
...  
Keyword(s):  
Clinical Observation ◽  
Clinical Manifestations ◽  
Maculopapular Rash ◽  
The Body ◽  
Neutrophilic Dermatosis ◽  
Inherited Disease ◽  
Laboratory Activity ◽  
Ubiquitinated Proteins ◽  
Systemic Inflammatory Reaction ◽  
Long Time

The purpose of this publication is to describe the CANDLE syndrome (its etiology, pathogenesis, clinical manifestations) and present a clinical observation. CANDLE syndrome is a rare genetically inherited disease caused by impaired assembly by of the protease, which leads to the accumulation of abnormal (ubiquitinated) proteins in B-lymphocytes, fibroblasts, macrophages and some other cells of the body. As a result, an excessive activation of interferon synthesis occurs and a systemic inflammatory reaction develops with symptoms such as febrile fever, skin syndrome, represented by nodules and maculopapular rash, hepatosplenomegaly, lipodystrophy, amyotrophy, delayed physical development, as well as high laboratory activity. The article describes a clinical observation of a female patient with typical symptoms of CANDLE syndrome. However, due to the rarity of the disease and lack of publications describing it, it has not been possible to diagnose the child for a long time.

scholarly journals Laboratory Activity of Spinosad on Non-Target Beneficial Arthropods, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 357-357 ◽  
Author(s):  
J. R. Schoonover ◽  
L. L. Larson
Keyword(s):  
Beneficial Arthropods ◽  
Laboratory Activity

Development and validation of an undergraduate laboratory activity exploring the dna analysis of pet food

2018 ◽  
Vol 46 (5) ◽  
pp. 536-546 ◽  
Author(s):  
Jennifer Turner Waldo ◽  
Melanie Pereira ◽  
Mohammad Rahman ◽  
Jessica Siconolfi
Keyword(s):  
Dna Analysis ◽  
Pet Food ◽  
Laboratory Activity ◽  
Undergraduate Laboratory ◽  
Development And Validation

scholarly journals Computer physician order entry (CPOE) as a strategy to estimate laboratory activity and costs associated with cancer clinical trials

2018 ◽  
Vol 28 (3) ◽  
Author(s):  
Enrique Rodriguez-Borja ◽  
Africa Corchon-Peyrallo ◽  
Macarena Diaz-Gimenez ◽  
Arturo Carratala-Calvo
Keyword(s):  
Clinical Trials ◽  
Cancer Clinical Trials ◽  
Order Entry ◽  
Laboratory Activity ◽  
Physician Order Entry

scholarly journals Influence of Technological Parameters on the Emision on DLP 3D Printing Process

2020 ◽  
Vol 70 (12) ◽  
pp. 4387-4392
Keyword(s):  
3D Printing ◽  
Point Of View ◽  
Particulate Emissions ◽  
Technological Parameters ◽  
Printing Process ◽  
Laboratory Activity ◽  
Emission Point ◽  
Measurement Methodology ◽  
Made In

The present work addresses the issue of emissions requires it made in resin polymerization processes at 3D digital light process (DLP) printing. From an emission point of view, both particulate and chemical emissions are analysed in the form of gases during the DLP printing process. In the paper, we present first the element, which are study. In second part of the paper, we presented the printer, material for printing, measuring apparatus for emission and measurement methodology. In the three part of paper, we made the determinations for gas emissions. Will follow the determinations for particulate emissions. In the final chapter, the data generated by the printing emissions related to the problems specific to the laboratory activity and it has made the specific conclusion in rapport with the printing process. Keywords: 3D printing; emission particles; air pollution, resin material, DLP printing

scholarly journals When Direct Pressure Is Not Enough: An Educational Technique for Teaching Wound Packing in Athletic Training Education

2021 ◽  
Vol 16 (4) ◽  
pp. 278-286
Author(s):  
Ashley B. Thrasher ◽  
Edward J. Strapp
Keyword(s):  
Athletic Training ◽  
Clinical Education ◽  
Wound Care ◽  
Athletic Trainers ◽  
Mass Casualty ◽  
Laboratory Activity ◽  
Civilian Casualty ◽  
Mass Casualty Events ◽  
Direct Pressure ◽  
Educational Technique

Context Uncontrolled hemorrhage is a major cause of preventable death. Wound care and managing external hemorrhage are important skills for athletic trainers. Objective Describe a laboratory activity used to allow students to practice managing uncontrolled external hemorrhage and wound packing. Background The prevalence of active shooter and other mass casualty events has grown, and a trend to move military-based emergency skills into civilian casualty care has emerged. Athletic trainers are uniquely positioned to respond to catastrophic events at the time of injury. Controlling hemorrhage and rapidly applying a tourniquet or administering wound packing have a great effect in preventing death due to severe hemorrhage. Description An educational technique using a pork shoulder was implemented to provide students with experience in wound packing. Clinical Advantage(s) Students describe this activity as a beneficial way to gain experience on an important skill not often seen in the clinical education setting. Conclusion(s) Faculty may consider implementing wound packing using a pork shoulder as a laboratory activity when teaching wound care and external hemorrhage management.

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