The bongo net, then towing 30 minute sub-surface from each station. Figure 2: Bongo net (mesh size 500 µm, mouth diameter 0.3m and length 1.3m). v. Sukumaran et al., (2014) use a cast net measuring 2.5 m long, with a mesh size varying from 7 mm at the base and 15 mm at the apex was employed in the collection of fish throughout the period of study and the net was hauled 10 times during every collection at the sampling site. vi. Mwaluma (2010) studied community structure and spatio-temporal variability of ichtyoplankton in Kenyan Coastal waters method use the light trap fabrication and deployment.
We concluded that the rate of hydrolysis of (CH3)3CCl is directly proportional to water content in the solvent mixture. Aims of experiment • Determine the rate constants for hydrolysis of (CH3)3CCl in solvent mixtures of different composition (50/50 V/V isopropanol/water and 40/60 V/V isopropanol/water) • Examine the effect of solvent mixture composition on the rate of hydrolysis of (CH3)3CCl Introduction With t-butyl chloride, (CH3)3CCl, being a tertiary halogenoalkane, it is predicted that (CH3)3CCl reacts with water in a nucleophilic substitution reaction (SN1 mechanism), where Step 1 is the rate-determining step. The reaction proceeds in a manner as shown
Materials and methods Isolation and identification of Bacillus thuringiensis Bacillus thuringiensis was isolated from raw milk (Taif, KSA) on nutrient agar at 37oC for overnight. The supernatant of the bacterial isolate was screened for synthesis of AgNPs. The bacterial isolate was morphologically and biochemically characterized according to Bergy’s Manual of Systemic Bacteriology. Also, this bacterial isolate was further identified by 16S rRNA sequencing. The culture was maintained on a nutrient agar plate/slants at 4°C and as glycerol stocks 40% at −70°C.
Adela Papiez Granitz Accelerated English 9 22 March 2017 Outline Marine Biologists: Saving the Environment One Animal at a Time Thesis: Marine biology is a demanding job requiring working with marine animals, and having many qualifications and courses to take, as well as years of training, with many fulfilling rewards. Generally, marine biology is the study of organisms, their relationship to the environment, and their behavior, in addition to studying the chemical aspects of bodies of saltwater ("At A Glance" & "NOAA Fisheries"). In marine biology, you do independent research and teamwork ("Job Description"). Can be based on a specific species, organism, or behavior, technique, or ecosystem ("Marine Careers"). Observations and notes are very
Many debilitating diseases and conditions have been cured and prevented using vaccinations that were tested on animals. For example, Emil von Behring performed an experiment on guinea pigs that helped form the vaccine for diphtheria (Soft Schools). The significance of this experiment helped von Behring earn a Nobel Prize in Physiology (Soft Schools). Following von Behring’s findings, Edgar Adrian used frogs to confirm the specific way that the brain sends signals to different parts of the body (Soft Schools). Advancements in the understanding of diabetes, tuberculosis, and polio, along with the formation of anesthetics all were successful with the help of animal testing (Soft Schools).
They feed on small invertebrates such as beetles, flies, and spiders Lifecycle: Spring peepers start breeding immediately after hibernation. They typically lay 800 – 1000 eggs. Eggs are hidden underwater at vegation bases. After hatching they are ready to leave the water in as little as 8 weeks. Source: eNature.com.
For the first 1-week participants were given advanced delivery mechanism simulator training, for continuous 4 days, one hour fifteen minutes daily (15mts each student), in which 1 student was absent. For the 2-week the participants were asked to perform spontaneous vaginal delivery by advanced delivery mechanism simulator under supervision. For the 3-week the participants were asked to perform spontaneous vaginal delivery by advanced delivery mechanism simulator without supervision. In the 4-week performance assessment was done of 18 students by checklist and results were
Indeed, zebrafish is a good-established model to do preclinical tests on a large number of small molecules/drugs in cardiovascular disease (Berghmans et al. ; 2008; Asnani and Peterson, 2014, Gut et al., 2017). “At now, are available 4 types of chemical screening assays on zebrafish: morphological screens (to screen chemical genetics and toxicology), behavioral screens (eg. use swimming kinetics to quantify the effects of the drug), fixed time-point/labeling assays (to get information on a cellular or tissue level) and fluorescence assays (reporter-based quantifications)” (Mathias et al. ; 2012).
Exp. 10 - The Chemistry of Natural Waters David Graves 11/10/15 CHEM 111 Section 104 TA: Lai Shi Group Members: Jasmine Graves, Brad Hensler, Peter Hoholick Introduction Experiment 10: The Chemistry of Natural Waters investigates the topic known as water hardness. Hardness is a chemical property of water that evaluates the concentration of dissolved divalent cations such as Ca and Mg, which happen to be the two ions that are tested for in the experiment. Hardness can be measured in multiple ways such as molarity (M) or parts per million (ppm). Since all natural waters contain ion concentrations of dissolved minerals, it is important to known the hardness value because hard water can cause scale formation in industrial
Assessing the impacts of tourism on the world's largest fish Rhincodon typus at Panaon Island, Southern Leyte, Philippines. Aquatic Conservation: Marine and Freshwater Ecosystems, 27(5), pp.986-994. Schleimer, A., Araujo, G., Penketh, L., Heath, A., McCoy, E., Labaja, J., Lucey, A. and Ponzo, A. (2015). Learning from a provisioning site: code of conduct compliance and behaviour of whale sharks in Oslob, Cebu, Philippines.
D. rerio, also known as Zebrafish are used as a model organism within several research fields, toxicology and developmental biology are two examples 18. They share different levels of similarities towards humans and the human mucin genes. All have different advantages and disadvantages as model
When it comes to a species such as Zebrafish, they have the ability to regenerate their heart up to 20% after amputation in about one month. The purpose of this experiment is to determine the importance and origin of former cardiomyocytes and how they serve a role in regeneration. A cre/lox plus tamoxifen system is used to manipulate genetic material in cardiomyocytes and determine its original lineage. A major key finding is that Zebrafish cardiac muscle cells minimally switch up their pattern of genetic expression to an earlier stage, which is seen in their destructed muscular tissue structure. During cellular division, the expression of plk1 helps increase the number of cardiomyocytes in heart regeneration and helps differentiate the cells back into mature cells.
Due to controversy over GMO foods this particular avenue of research has waned, but in recent years there has been a growing interest in using transgenic fish to study toxicology (Gong et al 213, Dai et al 11). One possible application of transgenic zebrafish is the detection and monitoring of aquatic pollution (Dai et al 11). Aquatic environments are a major route of distribution for pollutants such as pesticides, toxic heavy metals, and endocrine disruptors (Carvan et al 134). Fish and other aquatic organisms can accumulate these environmental contaminants via bioconcentration in the food chain or by directly absorbing them through the gills (Carvan et al 134). Humans are also at risk for exposure through the consumption of fish from polluted water (Carvan et al