CHAPTER 4 RESULTS AND DISCUSSION 4.1 Percentage yield Fresh leaves of C. nardus with 1 kg portion yielded about 22.57g of aqueous crude extract‚ which was approximately about 2.26% of yield. The result showed that fresh leaves had a higher percentage yield compared to the air-dried leaves‚ it was only 1.3% yield which conducted by Koba et al. (2009) with the similar extraction technique. There were other factors that might affect the percentage yield‚ such as influence of the harvest place
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Personnel Management defines sick leave as “paid absence from duty”. An employee is entitled to use sick leave for personal medical needs‚ family care or bereavement‚ care of a family member with a serious health condition‚ or adoption-related purposes. There is no limitation on the amount of sick leave that can be accumulated. An employee should use sick leave whenever the employee is inhibited from performing their assigned duties due to any of the approved sick leave entitlement reasons. Failure to
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into this world‚ your life changes drastically. When a mother needs to take off work for maternity leave there is never a problem‚ but when the father tries it can cause a lot of chaos. Most new or expecting fathers wish they could be involved at birth. Many working dads lack the paternity leave they need because they are not offered paternity leave. Men should have the right to take paternity leave so they can help the mother of their child. If the father is given the chance to take time off to help
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sexism into oppression and racism. Throughout Brenda DoHarris’s novel‚ Calabash Parkway‚ feminism is displayed on numerous occasions by the Guyanese women being portrayed in the story. There are examples of feminism in Thelma Thompson’s novel‚ Bay Leaves and Cinnamon Sticks‚ by Miss Millie‚ a Jamaican woman who finds work in the United States. The meaning of feminism amongst women of color can be analyzed in several ways. Typically‚
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population density of major insect pest as influenced by spatial arrangement in pechay by ABSTRACT Spatial arrangement in pechay production could be used as an strategic pest management. Three different spacing were used to determine the effects of spatial arrangement in the population density of pechay. The spacing were 2.5 x 5 in‚ 3.5 x 5 in and 5 x 5 in per plant. Collections of insect pests were done starting five days after transplanting and continued every three days until harvest. Damage
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SCIENCE INVESTIGATORY PROJECT spicy GUAVA LEAVES CHIPS
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EXTRACTION OF CAFFEINE FROM TEA LEAVES ABSTRACT Caffeine extraction from the commercial tea leaves (Lipton Yellow Label Tea) that was done is multiple extraction. 4 tea bags were used in the experiment; tea leaves were weighed having 8.5333 grams. The leaves were boiled in a beaker with 150ml of water; the aqueous tea extract was transferred in a seperatory funnel mixed with DCM (20ml)‚ done thrice. The DCM layer was washed with 20ml 6M NaOH in the seperatory funnel; the organic layer
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Extraction of Caffeine from Tea Leaves Santos‚ Raphael‚ Samson‚ Nonia Carla‚ *Tabora‚ Brylle‚ Tan‚ Kate Michal Department of Biological Sciences‚ University of Santo Tomas‚ Manila‚ Philippines Abstract Tea leaves are natural products that are harvested from agriculture. Caffeine‚ on the other hand‚ is a stimulant that has been shown to speed up the time of reaction‚ increase alertness‚ and improve one’s concentration. What we did in this experiment was to extract the alkaloid caffeine content
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of information for all the workers‚ this is a costly problem on its own. Therefore the researcher is going to develop a computerized leave application system for the Human Resources Department to improve the department
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Extraction of caffeine from Lipton tea leaves Maria Gianna Beatrice L. Cancio*‚ Joe Mari Isabella B. Caringal‚ Rowena A. Chiang‚ Patricia Deanne del Valle Department of Biological Sciences‚ College of Science‚ University of Santo Tomas‚ España‚ Manila‚ Philippines Abstract Caffeine was extracted from Lipton tea leaves by multiple extraction techniques namely solid to liquid extraction and liquid to liquid extraction; the purification by sublimation and melting point determination. Three
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