Citations with the tag: BIOLOGY -- Experiments

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  • A lemonade bottle model of visking tubing--a model system of a model system?
    Smith, Glynis; Lock, Roger // Journal of Biological Education (Society of Biology); Spring92, Vol. 26 Issue 1, p8 

    Presents a model of visking tubing experiments where the tubing itself is used as a model of the lining gut. Use of two two-liter and one three-liter bottles to model the boiling tube; Altering the concentration of marbles in the visking tubing; `Lipid sieve' theory of membrane structure.

  • Clinical importance of essential fatty acid deficiency.
    �zsoylu, S. // European Journal of Pediatrics; 1998, Vol. 157 Issue 9, pA779 

    Comments on a study by M. Roulet et al. that examined the clinical importance of essential fatty acid deficiency. Absence of any clinical relevance; Effects of long-term deficiency of essential fatty acids; Separation of statistical significance from the biological importance of the study.

  • Mighty Microbes.
    �zsoylu, S. // Scholastic SuperScience; Nov/Dec2011, Vol. 23 Issue 3, p15 

    The article focuses on an experiment related to the presence of microbes in the environment.

  • Phototropic responses.
    Demchik, MIchael J. // Science Teacher; Jan97, Vol. 64 Issue 1, p71 

    Focuses on a biology class experiment on pea plants. Observations concerning the pea plants; Responsibilities of the students during the growing period of the pea plants; Questions and solutions based on student's observation and experimentation.

  • Easy Extraction of Roundworms from Earthworm Hosts.
    Eyster, Linda S.; Fried, Bernard // American Biology Teacher (National Association of Biology Teache; May2000, Vol. 62 Issue 5, p370 

    Describes a method for obtaining live roundworms and provides ideas for laboratory experiments. Information on the animal phylum Nematoda; Materials needed; Details of the experiment.

  • How do earthworms move?
    Johnson, Gillian // Journal of Biological Education (Society of Biology); Summer98, Vol. 32 Issue 2, p90 

    Presents an experiment conducted by Year 11 students in London, England, to illustrate how the skeleton of the earthworm supports the animal and how it moves. Methodology; Models used in the experiment.

  • Cellulose decomposition in soil.
    Trevors, J.T. // Journal of Biological Education (Society of Biology); Summer98, Vol. 32 Issue 2, p133 

    Provides information on a study which described a technique for studying decomposition of organic matter such as cellulose paper, cotton cloth (calico) and straw in soil. Examples of cellulase enzymes; Materials and methods; Comparison between the rates of decomposition of cellulose paper,...

  • A DNA Fingerprinting Simulation Laboratory for Biology Students.
    Palladino, Michael A.; Cosentino, Emily // American Biology Teacher (National Association of Biology Teache; Oct2001, Vol. 63 Issue 8, p596 

    Presents a DNA fingerprinting experiment for biology students. Description of the forensic scenario; Materials needed; Principles of DNA fingerprinting.

  • Ecology & Evolution of Wall-Dwelling Organisms.
    Jennings, Verryn; Stewart, Don // American Biology Teacher (National Association of Biology Teache; Jun2000, Vol. 62 Issue 6, p429 

    Presents information on a laboratory experiment designed for undergraduate biology majors to examine the ecology and evolution of wall-dwelling organisms. Adaptation of organisms to life on walls; Environmental factors that affect the composition and development of wall communities; Dominant...

  • Termite trouble.
    Grey, Annette M. // Science Teacher; Sep96, Vol. 63 Issue 6, p79 

    Presents an experiment on termite color preferences. Steps; Student activities; Effectiveness of the experiment as a teaching tool.

  • Using Spreadsheets To Model Population Growth, Competition & Predation in Nature.
    Carter, Ashley J.R. // American Biology Teacher; Apr99, Vol. 61 Issue 4, p294 

    Provides information on the use of spreadsheets in the study of population in nature. Population equations; How to set up spreadsheet models; Description of the experiments with the spreadsheet.

  • Be your own lab rat.
    GUTFELD, GREG // Men's Health (10544836); Mar99, Vol. 14 Issue 2, p135 

    Provides information on do-it-yourself biological experiments with corresponding results. Random assessment of breath pungency in a controlled environment by objective co-worker; Psychological and physical effects of consuming meat and meat by-products with a clown for five days; Enhanced...

  • An authentic RFLP lab for high school or college biology students.
    Guilfoile, Patrick G.; Plum, Stephen // American Biology Teacher; Jun98, Vol. 60 Issue 6, p448 

    Presents information on a restriction fragment length polymorphism (RFLP) analysis exercise which can help students to understand the indentification of deoxyribonucleic acid sequence differences in individuals. Wide use of RFLP analysis by high schools and college teaching laboratories;...

  • The Red & White Yeast Lab.
    White, Brian T. // American Biology Teacher; Oct99, Vol. 61 Issue 8, p600 

    Describes an experiment system based on an engineered strain of bakers' yeast that is designed to involve students in the process by which scientific knowledge is generated. Goal of this exercise; Experimental procedure; Description of the student discussion activity.

  • Dung-Inhabiting Fungi in the High School Biology Laboratory.
    Chamuris, George P.; Counterman, Donna // American Biology Teacher; Oct99, Vol. 61 Issue 8, p605 

    Points out that the study of dung-inhabiting or coprophilous fungi in a high school biology class can provide rewarding activities that illustrate basic laboratory techniques and fundamental ecological concepts. Discussion on coprophilous fungi; Role of fungi in the natural ecosystem; Classroom...

  • Development of procedural understanding among South African science students at pre-tertiary education level.
    Almekinders, Rene; Thijs, Gerard; Lubben, Fred // Journal of Biological Education (Society of Biology); Winter98, Vol. 33 Issue 1, p33 

    Reports some of the results of a study into the development of procedural understanding for pre-university students in South Africa. Presentation of analysis of one representative question about the use of control groups in biological experiments; Relation between the demand for conceptual and...

  • Beyond the spherical cow.
    Doyle, John // Nature; 5/10/2001, Vol. 411 Issue 6834, p151 

    Focuses on computational biology. Significance of computational and mathematical approaches in complex biological processes; Mathematical models used in molecular biology; Benefits of biology from the interaction of experiment and modeling; Use of software in biology experiments.

  • Grants for biology projects abroad.
    Doyle, John // Biologist; Oct2012, Vol. 59 Issue 4, p5 

    The article reports that the Great Britain Society of Biology will pay for the traveling expenses of those who want to go abroad for biology projects but cannot afford it.

  • Grades 5 & up: Nonfiction.
    Elsner, Jacqueline // School Library Journal; Feb98, Vol. 44 Issue 2, p112 

    Reviews the book `Adventures with Biology: Biology Experiments for Young People,' by Maurice Bleifeld and illustrated by Jacob Katari.

  • Chymosin for Classroom Experiments.
    Harewood, Ken; Hinman, Richard // American Biology Teacher; Apr99, Vol. 61 Issue 4, p288 

    Provides information on an experiment to help familiarize the students with some of the fundamental aspects of enzyme or substrate interaction. How chymosin experiments is being done in the classroom; Presentation of chymosin manufacturing methods; Effect of enzyme concentration on chymosin...

  • Evaluation of corrected flow time in oesophageal Doppler as a predictor of fluid responsiveness.
    J-H. Lee; J-T. Kim; S. Z. Yoon; Y-J. Lim; Y. Jeon; J-H. Bahk; C. S. Kim // BJA: The British Journal of Anaesthesia; Aug2007, Vol. 99 Issue 3, p343 

    Background Corrected flow time (FTc) by oesophageal Doppler is considered to be a �??static�?? preload index. We evaluated the ability of FTc to predict fluid responsiveness and compared this with the abilities of other preload indices, such as pulse pressure variation (PPV), central...

  • Simulation Software To Augment Laboratory Exercises.
    Konopka, Allan; Furbacher, Paul // American Biology Teacher; Oct99, Vol. 61 Issue 8, p580 

    Demonstrates how computer simulation technology can be used in laboratory exercises in microbiology. Components of introductory microbiology laboratory courses; Advantages of using computer simulation; Strategies that can be adopted in a laboratory course.

  • Factors Affecting Participation in Traditional and Inquiry-Based Laboratories.
    Russell, Connie P.; French, Donald P. // Journal of College Science Teaching; Dec2001/Jan2002, Vol. 31 Issue 4, p225 

    Presents information on a study which investigated the relationship between student participation in laboratory activities and their performance in biology at the college level. Methodology; Results and discussion.

  • Membrane-activated microfluidic rotary devices for pumping and mixing.
    Hao-Yu Tseng; Chih-Hao Wang; Wang-Ying Lin; Gwo-Bin Lee // Biomedical Microdevices; Aug2007, Vol. 9 Issue 4, p545 

    Abstract  Microfluidic devices are operated at a low-Reynolds-number flow regime such that the transportation and mixing of fluids are naturally challenging. There is still a great need to integrate fluid control systems such as pumps, valves and mixers with other functional microfluidic...

  • Planform: an application and database of graph-encoded planarian regenerative experiments.
    Lobo, Daniel; Malone, Taylor J.; Levin, Michael // Bioinformatics; Apr2013, Vol. 29 Issue 8, p1098 

    Summary: Understanding the mechanisms governing the regeneration capabilities of many organisms is a fundamental interest in biology and medicine. An ever-increasing number of manipulation and molecular experiments are attempting to discover a comprehensive model for regeneration, with the...

  • Nanostructural Organization of Naturally Occurring Composites--Part II: Silica-Chitin-Based Biocomposites.
    Ehrlich, Hermann; Janussen, Dorte; Simon, Paul; Bazhenov, Vasily V.; Shapkin, Nikolay P.; Erler, Christiane; Mertig, Michael; Born, Ren�; Heinemann, Sascha; Hanke, Thomas; Worch, Hartmut; Vournakis, John N. // Journal of Nanomaterials; 2008 Special Issue 3, p1 

    Investigations of the micro- and nanostructures and chemical composition of the sponge skeletons as examples for natural structural biocomposites are of fundamental scientific relevance. Recently, we show that some demosponges (Verongula gigantea, Aplysina sp.) and glass sponges (Farrea occa,...

  • Deciphering Protein-Protein Interactions. Part I. Experimental Techniques and Databases.
    Shoemaker, Benjamin A.; Panchenko, Anna R. // PLoS Computational Biology; Mar2007, Vol. 3 Issue 3, p0337 

    Proteins interact with each other in a highly specific manner, and protein interactions play a key role in many cellular processes; in particular, the distortion of protein interfaces may lead to the development of many diseases. To understand the mechanisms of protein recognition at the...

  • Biology Lab Manuals 101.
    Lewis, Ricki // BioScience; Oct93, Vol. 43 Issue 9, p635 

    Discusses the introduced innovations on laboratory exercises for undergraduate biology courses. Changes suggested Marshall D. Sundberg, biology coordinator at Louisiana State University in Baton Rouge; Observations of Richard Stratton of Houghton Mifflin Company. INSET: Great expectations:...

  • How To Generate Understanding of the Scientific Process in Introductory Biology.
    Collins, Linda T.; Bell, Rebekah P. // American Biology Teacher; Jan2004, Vol. 66 Issue 1, p51 

    Presents a student-designed laboratory exercise on yeast fermentation to understand the scientific process in introductory biology. Advantages of the laboratory exercise; Reagents and equipment for making yeast suspension; Format for a laboratory report based on standard scientific format.

  • Reconsidering 'spatial memory' and the Morris water maze.
    Sullivan, Jacqueline // Synthese; Nov2010, Vol. 177 Issue 2, p261 

    The Morris water maze has been put forward in the philosophy of neuroscience as an example of an experimental arrangement that may be used to delineate the cognitive faculty of spatial memory (e.g., Craver and Darden, Theory and method in the neurosciences, University of Pittsburgh Press,...

  • Blood Supply of the Spheno-Occipital Synchondrosis in the Wistar Albino Rat.
    DORENBOS, JOOP // Journal of Dental Research; Jul1971, Vol. 50 Issue 4, p983 

    The article presents a study that examines the blood supply of the spheno-occipital synchrondosis in Wistar albino rats. The authors studied several specimens to determine that vascularization is caused by two systems of vessels which surround the synchondrosial cartilage. Experimental methods...

  • SOME HISTOENZYMOLOGICAL (HISTOCHEMICAL) AND BIOCHEMICAL CHANGES INDUCED BY PEUCEDANUM HERBAL EXTRACTS UPON THE LIVER AND KIDNEY IN RATS.
    Roman, Ioana; Rusu, M. A.; Puica, C.; Deliu, C. // Analele Societatii Nationale de Biologie Celulara; 2011, Vol. 16 Issue 2, p79 

    The experiments were performed on adult albino female Wistar rats. We tested the action of 4 species of Peucedanum herbal extracts, for 10 days, on the liver and kidneys. We used histoenzimological determinations (LDH, SDH, CyOx and ATP - ase activity) and biochemical (serum transaminase...

  • IS THERE AN ACUTE GALLBLADDER'S INFLAMMATION AFTER THE EXPERIMENTAL LAPAROSCOPIC LIGATURE AND SECTION OF CYSTIC DUCT AND ARTERY?
    Stancu, B.; Miclaus, V.; Andercou, O.; Osiceanu, A. // Analele Societatii Nationale de Biologie Celulara; 2011, Vol. 16 Issue 2, p137 

    The experimental study aimed to induce the acute alithiasic cholecystitis by application of clips and then sectioning the cystic duct and cystic artery in 10 pigs using laparoscopy, to verify if the ischaemia of the gallbladder and the oclusion of the cystic duct produce inflammation and so the...

  • Effects of mosquitofish (Gambusia affinis) cues on wood frog (Lithobates sylvaticus) tadpole activity.
    Buttermore, Katherine F.; Litkenhaus, Paige N.; Torpey, Danielle C.; Smith, Geoffrey R.; Rettig, Jessica E. // Acta Herpetologica; Jun2011, Vol. 6 Issue 1, p81 

    We examined the changes in activity of wood frog (Lithobates sylvaticus) tadpoles exposed to combinations of visual, chemical, and mechanical cues of the invasive mosquitofish (Gambusia affinis). We also examined whether the responses of the tadpoles to the predator cues were influenced by the...

  • Food science experiments online.
    Buttermore, Katherine F.; Litkenhaus, Paige N.; Torpey, Danielle C.; Smith, Geoffrey R.; Rettig, Jessica E. // New Zealand Science Teacher; 2009, Issue 122, p23 

    Information about the workshop conducted by the New Zealand Institute of Food Service and Technology (NZIFST) from the Department of Food Science in University of Otago in New Zealand. Topics include the introduction of teachers to a series of biology and chemistry based experiments which are...

  • Phosphate Uptake IN CARROT & YEAST.
    Tatina, Roberta; Mansor, Marcy; Maier, Sarah // American Biology Teacher (National Association of Biology Teache; Sep2001, Vol. 63 Issue 7, p498 

    Presents a biology experiment about the uptake of phosphate ions by carrot and yeast. Information on the cellular ion transport; Experimental procedure; Testing of hypothesis; Tips to ensure the success of laboratory activity.

  • Does HERBICIDE RESISTANCE Have a Cost in Brassica rapa.
    Newell, Sandra J. // American Biology Teacher (National Association of Biology Teache; Nov/Dec2006, Vol. 68 Issue 9, p530 

    The article focuses on an experiment conducted in a college-level biology class to examine the resistance of genetic strains of rapid-cycling Brassica rapa to the herbicide atrazine. Herbicide resistance may come with a cost to the organism. Resistance to triazine herbicides is often dependent...

  • Advances in the Systemic Approach to Ecophysiological Studies.
    Drozdov, S. N.; Kurets, V. K. // Russian Journal of Plant Physiology; Jul/Aug2004, Vol. 51 Issue 4, p556 

    Advances in ecological plant physiology are reviewed in brief and its significance for agriculture and forestry is discussed. The opportunities offered by a systemic approach to multifactor experiments designed to simulate the effect of environmental conditions on biological processes occurring...

  • Ammonia as a Pheromone in Anuran Tadpoles.
    MANTEIFEL, Y. B.; KISELEVA, E. I. // Physiological Research; 2011 Supplement, pS185 

    In laboratory experiments, conspecific excretions and ammonia solutions evoked avoidance reactions in tadpoles of three anuran species, Bufo bufo, Rana temporaria, and Rana arvalis. A differential sensitivity of ammonia chemoreception was determined for two anuran species. For Bufo bufo...

  • Six tips for more successful cell cultures.
    Sullivan, Ed // MLO: Medical Laboratory Observer; May2010, Vol. 42 Issue 5, p44 

    The article offers various suggestions for laboratorians to perform more successful cell culture experiments. It suggests that laboratorian should choose the right hydrophobic growth surface in order to minimize attachment. There must be filtering of potential contaminants. It recommends to keep...

  • A Framework for Image-Based Classification of Mitotic Cells in Asynchronous Populations.
    Slattery, Scott D.; Newberg, Justin Y.; Szafran, Adam T.; Hall, Rebecca M.; Brinkley, Bill R.; Mancini, Michael A. // Assay & Drug Development Technologies; Apr2012, Vol. 10 Issue 2, p161 

    High content screening (HCS) has emerged an important tool for drug discovery because it combines rich readouts of cellular responses in a single experiment. Inclusion of cell cycle analysis into HCS is essential to identify clinically suitable anticancer drugs that disrupt the aberrant mitotic...

  • An Integrated Limnology, Microbiology & Chemistry Exercise.
    Dunnivant, Frank M. // American Biology Teacher (National Association of Biology Teache; Sep2006, Vol. 68 Issue 7, p424 

    The article describes an exercise for teaching limnology, microbiology and thermodynamics. The exercise specifically explores lake stratification and nutrient consumption. The reference textbooks and teaching aids that are used in the exercise are mentioned. The exercise is conducted in lecture...

  • A New Multichannel Spectral Imaging Laser Scanning Confocal Microscope.
    Yunhai Zhang; Bian Hu; Yakang Dai; Haomin Yang; Wei Huang; Xiaojun Xue; Fazhi Li; Xin Zhang; Chenyu Jiang; Fei Gao; Jian Chang // Computational & Mathematical Methods in Medicine; 2013, p1 

    We have developed a new multichannel spectral imaging laser scanning confocal microscope for effective detection of multiple fluorescent labeling in the research of biological tissues. In this paper, the design and key technologies of the system are introduced. Representative results on confocal...

  • A simple method of assessing ecological value and...
    Jollands, Peter; Jollands, Philippa; Lakin, Elizabeth // Journal of Biological Education (Society of Biology); Summer98, Vol. 32 Issue 2, p138 

    Provides information on a study which described a technique that biology students can use for evaluating the ecological or conservation value of an area under study. Methodology; Limitation of the method; Brief overview on similar investigations.

  • Interstitial fluid flow within bone canaliculi and electro-chemo-mechanical features of the canalicular milieu.
    Sansalone, Vittorio; Kaiser, Joanna; Naili, Salah; Lemaire, Thibault // Biomechanics & Modeling in Mechanobiology; Jun2013, Vol. 12 Issue 3, p533 

    Canalicular fluid flow is acknowledged to play a major role in bone functioning, allowing bone cells' metabolism and activity and providing an efficient way for cell-to-cell communication. Bone canaliculi are small canals running through the bone solid matrix, hosting osteocyte's dendrites, and...

  • Research matters... germination of Penstemon.
    Sansalone, Vittorio; Kaiser, Joanna; Naili, Salah; Lemaire, Thibault // Horticulture Week; 8/21/2009, p20 

    The article presents an experiment on the germination of Penstemon cultivars. The experiment utilizes the Penstemon digitalis or Husker Red which were soaked in the gibberellic acid or GA3 solutions for 24 hours and then set to a filter paper at 21.3 degree Celsius. It concluded that there has...

  • Reward modulates spatial neglect.
    Malhotra, Paresh A.; Soto, David; Li, Korina; Russell, Charlotte // Journal of Neurology, Neurosurgery & Psychiatry; Apr2013, Vol. 84 Issue 4, p366 

    Background Reward has been shown to affect attention in healthy individuals, but there have been no studies addressing whether reward influences attentional impairments in patients with focal brain damage. Methods Using two novel variants of a widely-used clinical cancellation task, we assessed...

  • The fatty acid synthase inhibitor orlistat reduces experimental metastases and angiogenesis in B16-F10 melanomas.
    Seguin, F; Carvalho, M A; Bastos, D C; Agostini, M; Zecchin, K G; Alvarez-Flores, M P; Chudzinski-Tavassi, A M; Coletta, R D; Graner, E // British Journal of Cancer; 9/4/2012, Vol. 107 Issue 6, p977 

    Background:Fatty acid synthase (FASN) is overexpressed and associated with poor prognosis in several human cancers. Here, we investigate the effect of FASN inhibitors on the metastatic spread and angiogenesis in experimental melanomas and cultured melanoma cells.Methods:The lung colonisation...

  • A specialist's audit of aggregated occurrence records: An 'aggregator's' perspective.
    Belbin, Lee; Daly, Joanne; Hirsch, Tim; Hobern, Donald; La Salle, John // ZooKeys; 5/28/2013, Issue 305, p67 

    A recent ZooKeys' paper (Mesibov 2013: http://www.pensoft.net/journal_home_page.php?journal_id=1 &page=article&SESID=df7bcb35b02603283dcb83ee0e0af0c9&type=show&article_id=5111) has highlighted data quality issues in aggregated data sets, but did not provide a realistic way to address these...

  • Publishing proteomic data.
    Latterich, Martin // Proteome Science; 2006, Vol. 4, p8 

    Scientific publications should provide sufficient detail in terms of methodology and presented data to enable the community to reproduce the methodology to generate similar data and arrive at the same conclusion, if an identical sample is provided for analysis. The advent of high-throughput...

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