Last Hope Essay Example | Topics and Well Written Essays - 1250 words

Last Hope - Essay Example The poem also displays the importance of a mother in one’s life and how the loss of such an important figure can lead to a lot of grief and sorrow. Aracelis Girmay writes the poem The Dream  to express her feelings about death and the contradictions that exist within it. It is a poem which shows the irony of living as a human being, some being happy with their lot in life while others remain sad due to their the tragic events, such as death, that happen in their lives. Girmay uses this poem to display the true nature of human life, that nothing is ever permanent and death is ever present to take away the people that we value the most, and leaving behind individuals who are full of grief, sorrow, and mourning. The use of imagery is very extensive in this poem especially when making contrasts between the beauty of life and the abruptness through which it comes to an end. Girmay states that â€Å"below the window, my mother/young, playing with me/at a rock, in some sunlight/falling over us†. This statement can be employed to show what the persona in the poem thought of their mother. That the mother was alive, she was a jovial person who played with her children and was happy with them. However, it seems that death came abruptly since the tone from the poem is one of sadness. The image of night or darkness is used to refer to death as well as the feelings of grief and sorrow that are experienced by the children who are bereaved after the loss of their mother. It can be said that the image of darkness, when contrasted to the beauty of the world before the mother’s death may be Girmay’s way of stating that the world is beautiful just the way it is but it is death which mak es it not to be a pleasant place to live in due to its corrupting influence over it. This image may also be used to show the price which individuals have to pay when they lose their loved ones to death because nothing

The concept of fairness Movie Review Example | Topics and Well Written Essays - 750 words

The concept of fairness - Movie Review Example Lavoie describes a situation when he asked a teacher whether she would have spent some time explaining information personally to the child with disabilities and she answered that she wouldn’t have done that, because it would have been unfair regarding other children. Hence, Lavoie says that she was wrong in her definition of fairness. Thus when a child with learning disabilities gets the same treatment as other children, the fact that teacher treats all the children the same way seems to be unfair and even offensive for the child. Hence, it would be fair if the child with disabilities got special treatment, even though it may take some time of learning from other children. He claims that this concept is very important because the main principle according to which children learn is that they learn not from what teachers tell them but they learn from what teachers (and parents) do. Hence, Lavoie says that a teacher may say that he is not supposed to treat the child with learning disabilities in some special way, because it is unfair regarding other children. However, children understand fair acts as those that satisfy the needs of each and every person, so they indeed would understand why the child with disabilities gets special treatment. Thus Lavoie advices parents to be fair in this very meaning. As far as children learn from what parents do, not say, they have to behave in accordance with what they tell their children to do. For example, if parents tell their child not to lie and the next moment they lie themselves.

Role of Social Workers in the UK Essay Example | Topics and Well Written Essays - 1750 words

Role of Social Workers in the UK - Essay Example In addition, such social workers can assess the effectiveness of their interventions. Significant value is attached by service users to the variegated approaches employed by social workers. Some of these approaches are; first, providing advice, advocacy and information; second, assisting people in their negotiations with state agencies, such as those in the areas of financial support and housing; third, making available counselling and other forms of psycho – therapeutic support; fourth, providing practical help and guidance; fifth, obtaining access to financial support for service users (Beresford, 2007). User engagement can be promoted by social workers, by either assisting users to access advocacy or by acting as advocates. Advocacy does not always consist of conflicts of interests and in case where this is true, the social worker has to protect the interests of the user (Gallagher & Smith, 2010). The various advances in the involvement of service users in social work have been amalgamated in legislation. This establishes a basis for forging a novel relationship between service providers and service users. Several benefits have accrued to service users and services, due to the involvement of service users in the planning and delivery of services (Service User Involvement, 2007). Some of these benefits are enumerated in the sequel. Service users develop new skills, improve their self – esteem and efficiency, enhance service ownership and adapt services to conform to their requirements. On the other hand, social work benefits in the following manner. The services provided acquire a user orientation, greater efficiency in the services provided, recruitment of appropriate personnel, and promotion of the social reintegration goals of the services.

Mesoporous Silica Nanoparticle (MNS) Properties

Mesoporous Silica Nanoparticle (MNS) Properties INTRODUCTION 1.1 Background Study Large amount of solid remnant from agriculture industries waste can create disposal problem to environment such as generation of odour and can attract pests that can endangered human health. Due to this problem the application of this waste is widely explored to control the disposal problem. According to Norsuraya, Fazlena and Norshasyimi (2016), primary fuel source and additive in construction industries utilise the application of solid residue. The example agricultural waste is corn cob, rice husk, sugarcane leaf and bagasse. Studies have been conducted to enhance the use of this solid residue into profitable product. One of the important element present in the waste is silica that has wide application. According to Norsuraya, Fazlena and Norshasyimi (2016), among the agriculture residue sugarcane bagasse ash (SCBA) consist the highest of the silica content with the value of 96.93%. This studies comply with the studies conducted by Rahman et al. (2015), that stated the amount of silica content in SCBA is more than 50%. Bagasse ash is the product of combustion of bagasse that are commonly used as a source energy to operate plant. Bagasse is one waste product in sugar industry that incurs additional disposal cost. Bagasse is cellular fiber remaining after extraction of the sugar-bearing juice from sugarcane. It consist of lignin (20-30 %), cellulose (40-45 %) and hemicelluloses (30-35 %) (Peng et al., 2009). The silica content varies depending on the environment, soil nature and the process involves in harvesting it. In Malaysia the application of Sugarcane Bagasse (SCB) is still not widely explored but studies already conducted to produce silica gel as adsorbent, additive for concrete, cosmetic and others because of its characteristic. SCB is more related to by-product in sugarcane mills industry. After the juice containing sucrose called as table sugar extracted from the sugarcane by pressing the sugarcane. The residue is the SCB which contains high fibrous residue. The largest sugarcane plantation in Malaysia is at the northern region of Malaysia which can produce more than 70 000 tonne of sugarcane. The sugarcane bagasse waste from the extraction process contribute to huge disposal waste problem. SCBA can be the most valuable stock for production of mesoporous silica that are useful application such as adsorption and catalyst (Rahman et al., 2015). For that purposes, the size and surface area of the mesoporous silica are importance. Mesoporous silica is a silica that has pore with diameter range of 2 50 nm depending on the process of synthesis of the mesoporous silica. The large surface area of the mesoporous silica functions as the active site that useful for the application such adsorption. Dye is a natural or synthetic materials that can add a specific colour onto the material that are applied to. Every year more than 10 000 types of dye are produced around the world and are used in different types of industries (Malakootian et al., 2015). The application of dye used widely from food industry to textile industry with the biggest consumer of dye is textile industry. This industry is known to be the one of the main contributor of industrial wastewater pollution and it is the most polluting of all the industrial sector. 10-50% of the dye will end up in the effluent (Axelsson et al., 2006). Dye are significantly toxic and mutagenic that poses hazard to aquatic life and living organism. One of example of dye is methylene blue (MB) that are an important aromatic compound with chemical formula of C16H18ClN3S. Large amount of this dye are released in the water sources and according to Malakootian et al. (2015) it is more importance removing dye from textile wastewater than tre ating other colourless organic and inorganic because only a small amount of dye can affect the water quality and colour. Various treatment method introduce to removes dye from textile wastewater such as physical, chemical and biological but it is not effective due to complex chemical structure that lead to resistant to this type of treatment other than the treatment cost. Thus, it is important to find other alternative process of removal of dye. Currently, the most known method to treat textile wastewater is by using adsorption process method because of it has more advantages compared to traditional method especially in environmental aspects and its ease of operation, cost effectiveness, biodegradability as well as greater efficiency. In order to carry out the adsorption, the main important thing is the adsorbent. According to Malakootian et al. (2015) the most typical adsorbent used for adsorption treatment for the removal of dyes from coloured water or wastewater, but due to its high production, regeneration and reactivation procedures cost research has been concentrated on alternative adsorbents with high adsorptive capacity and low cost such as mesoporous silica nanoparticle (MSN). These adsorbents have high efficiency due to their high surface area, high mechanical properties and good resistivity to thermal degradation, and they exist in several structures and amphoteric properties. 1.2 Problem Statement The wastewater from textile contain high concentration of dye. So it required for the effluent from the industry to undergo treatment. Wastewater resulting from these industries is generally characterize by high COD, pH, dissolved solid temperature and dye and surfactant content. Dye also can be toxic to environment because of its chemical properties. In order to treat effluent from textile industry that contain high percentage of dye, various method introduced and used. Examples of the methods are physical, chemical, biological, membrane separation, radiation, electrochemical, advanced oxidation, photolysis, electrochemical, sonolysis processes, etc. However, these methods are relatively ineffective because most dyes as azo reactive dyes are highly water soluble, have complex structures, and are stable to light, chemical and biological degradation, etc. Furthermore, these methods have certain disadvantages such as high capital and operational costs, secondary sludge disposal problems and the release of large volumes of toxic by-products (Malakootian et al., 2015). Among all these methods, adsorption is the best method because of its advantages and the best adsorbents is by using nanotechnology method such as Mesoporous Silica Nanoparticle. It is because it has high adsorptive capacity and low cost. 1.3 Objectives of Study The objectives of the study can be outlined as follows: To prepare Mesoporous Silica Nanoparticle (MSN) from bagasse ash To characterize the physicochemical properties of MSN. To study the potential of MSN as an environmental adsorbent in wastewater treatment 1.4 Research Scope The research is to investigate the effluent of low cost adsorbent materials which is Mesoporous Silica Nanoparticle (MSN) from bagasse ash as the adsorbent to remove the Methylene Blue. The MSN are prepared from Sol-Gel Method and then Hydrothermal Synthesis by using formaldehyde, water and without formaldehyde and water. The MSN will be characterize and will be subjected to: Fourier Transform Infrared Spectroscopy (FTIR) to identify the major functional chemical groups present in the silica Transmission Electron Microscopy (TEM) to determine the average particle size and the morphology of the materials. Brunauer-Emmett-Teller (BET) to evaluate the specific surface area. Scanning Electron Microscope (SEM) to evaluate the image of the MSN The performance of MSN adsorbent in removing methylene blue from aqueous solution will be carried out in various parameter which are: Effect of pH the aqueous methylene blue in pH 3, 5, 7, 9, 11 Effect of MSN dosage (0.1 g, 0.2 g, 0.3 g, 0.4 g and 0.5 g) Effect of initial concentration of aqueous methylene blue (10 ppm, 20 ppm, 30 ppm, 40 ppm and 50 ppm) Effect of temperature of the aqueous methylene blue (30 Â °C, 50 Â °C and 70 Â °C) The treated aqueous methylene blue dye will be characterized and subjected to UV-Visible Spectrometer (UV-Vis) to evaluate the percentage of methylene blue dye remove from the aqueous solution from adsorbent by MSN. LITERATURE REVIEW 2.1 Introduction One of the major problem in environment is water contamination. The bad effect of water contamination will affect everything in this world such as human, animals and plants. It is because water is the main elements to support all living things and earth. Nearly all of water contamination is caused by human activities. Apart from human activities, water contamination is also caused by natural waste. From long time ago, the water contamination is studied by researcher. There are many technique and method to treat and remove contaminants in the waste water. It is for preserving both human and the environment in this world. Among all contaminant in water, dye is one of the contaminant that exist in the water. The waster that contain dye is mainly from industry that related to textile industry, plastic and paper. It contain up to 10% of used dye. It is proven that dye is dangerous to all living things due to its harmful behaviour of dye molecules and their metabolites is significant for the development of strategies to diminish their desperate damaging impacts (Hebbar, Isloor, Zulhairun, Sohaimi Abdullah, Ismail, 2017). In addition to having harmful adverse effect, the presence of colour in water is visually unpleasant and can destroy the entire ecosystem. One of the most effective method to overcome the problem of effluent water containing dye is by using adsorption technique. It has been proven to be very effective by many researchers. This is because adsorption method offers more advantages compared to other method especially in environmental aspects and its ease of operation, cost effectiveness, biodegradability as well as greater efficiency. 2.2 Dyes Dyes are produced all over the world with approximately 10 000 different type of dyes produced per year and it has been used extensively in so many industries. Most common industry that utilizing dye is textile industry and estimated to utilize around 7 ÃÆ'- 105 1 ÃÆ'- 106 tons (Malakootian et al., 2015). Dyes are used to dye a textile products, fur products, and others. Dye can be originated mainly from vegetables and also animal sources. There also the existence of synthetic dye that replacing the natural sources. The main function of dye are to add colour to a certain materials such as textile. Dye are also generally utilized as part of industry such as rubber, paper, cosmetic etc. Among these different industry, textile industry positions first in utilization of dyes for colouring of fiber. The dye are constantly left as major waste in these industries. Because of their compound structure, dyes are impervious to fading on presentation of light, water and numerous chemicals and this manner are hard to be decolorized once discharged into the nature or aquatic environment. Basically, dyes are ionising and aromatic compound. Inside the dyes, there are chromophores present in them. Based on their structures of the dyes, it has aryl rings that has delocalised electron systems. These structures are said to be responsible for the adsorption of electromagnetic radiation that has varying wavelengths, based upon the energy of the electron clouds. Dye can influence aquatics life, human wellbeing and environmental framework when dye wastewaters are greatly released wastewater into water sources due to complex compound in the dye. It has big complicated molecular structure and harmful properties. It in the end rolls out improvements of ecological system and other serious pollution issues. Dye wastewaters can contain harmful organic residue with the significant mixes of phenol derivatives, aniline derivatives, organic acid and benzene derivatives (Likhar Shivramwar, 2013) 2.2.1 Classification of Dye Dyes can be characterized into a few classes as per their utilization, for example, reactive, disperse, direct, vat, sulphur, cationic, acid and solvent dyes. The classification of dyes according their application is as shown in table 2.1. Table 2.1: General dyes classification and its application (Hunger, 2003) Class Principal Substrate Application Chemical Types Acid Dyes Nylon, Wool, Silk, Paper, Inks and Leather Usually from neutral to acidic dyebaths Azo (including premetallised), antraquinone, triphenylmethane, azine, xanthene, nitro and nitroso Cationic (Basic Dyes) Paper, Polyacrylonitrile, Modified Nylon, Polyester and Inks Applied Applied from acidic dyebaths cyanine, hemicyanine, diazahemicyanine, diphenylmethane, triarylmethane, azo, azine, xanthene, acridine, oxanine and anthraquinone cotton, Direct Dyes Cotton, Rayon, Paper, Leather and Nylon Applied from neutral or slightly alkaline baths containing additional electrolyte Azo, phthalocyanine, stilbene and oxanine Dispersed Dyes Polyester, Polyamide, Acetate, Acrylic and Plastics Fine aqueous dispersions often applied by high temperature/ pressure or lower temperature carrier methods; dye may be padded on cloth and baked on or thermofixed Azo, anthraquinone, styryl, nitro and benzodifuranone Reactive Dyes Cotton, Wool, Silk and Nylon Reactive site on dye reacts with functional group on fiber to bind dye covalently under influence of heat and pH (alkaline) Solvent Azo, anthraquinone, phthalocyanine, formazan, oxanine Solvent Dyes Plastics, Gasoline, Varnishes Lacquers, Stains, Inks, Fats, Oils and Waxes Dissolution in the substrate Azo, triphenylmethane, anthraquinone and phthalocyanine cotton Sulphur Dyes Cotton and Rayon Aromatic substrate vatted with sodium sulphide and reoxidised to insoluble sulphur- containing products on fiber Indeterminate structure Vat Dyes Cotton, Rayon and Wool Water-insoluble dyes Solubilised by reducing with Sodium hydrogensulphide, then exhausted on fiber and Reoxidised Anthraquinone (including polycyclic quinines) and indigoids Synthetic dye are being used extensively used in different dyeing industry with textile is leading industry that utilize it with 56% of world dye production annually. Its effluent contain critical level of organic contaminants, which are toxic as it will create odour, bad taste, unsightly colour, foaming, etc. These substances are often resistant to degradation by biological methods and are not removed effectively by conventional physico-chemical treatment methods. Removal of these dyes from effluents in an economic fashion remains a major problem for textile industries. 2.2.2 Methylene Blue Methylene Blue (MB) or also known as Methylthioninium Chloride was first synthesized at 1876 by a German Chemist, Heinrich Caro. Paul Guttman and Paul Ehrlich used MB in the treatment of Malaria dieses in 1891. During that time also, the function of MB as a dye were discovered and were used in First World War as a biological weapon and partially staining the soldiers. MB has many uses in different field, For instance, chemists use it to detect oxidizing agents and biologists use it to stain tissue samples and detect nucleic acids. In medicine, it is used as a treatment for various illnesses and disorders, including methemoglobinemia, schizophrenia, kidney stones, and herpes infections. In aquaculture, it is used to prevent freshwater fish eggs from being infected by bacteria and fungi (Methylene blue New World Encyclopedia, 2014) In term of dye application only, MB a basic blue dye used for dyeing silk, leather, plastics, paper, and cotton mordant with tannin as well as for the production of ink and copying paper in the office supplies industry. The release of this dye to earth is troubling for both toxicological and aesthetical reasons as dye hinder light infiltration, harm the nature of the accepting streams and are toxic to food chain organisms. The dye has a synthetic origin and complex aromatic molecular structures, it is an inactive and hard to biodegrade when released into waste streams. This perspective has dependably been neglected in their discharge. The removal of synthetic dye is of incredible worry since a few dyes and their degradation products might be cancer-causing agents and poisonous and, thus, their treatment cannot rely on upon biodegradation alone. Table 2.2: Properties of Methylene Blue (MB) METHYLENE BLUE IUPAC name 7-(dimethylamino)phenothiazin-3-ylidene]-dimethylazanium;chloride Properties Molecular formula C16H18ClN3S Molar mass 319.86 g/mol Density 43 600 mg/L at 25 Â °C Melting point 100 ÂÂ °C Boiling Point Decomposes Odour Odourless Solubility in water Soluble in ethanol, chloroform; slightly soluble in pyridine; insoluble in ethyl ether Adapted from https://pubchem.ncbi.nlm.nih.gov/compound/methylene_blue#section=WIPO-IPC 2.2.3 Technologies for Dye Removal Dye are used widely in all sector to colour their product. In order to colour the product large amount of dye is used. Apart to colour their product the dye also been used as paper, and plastic. This will result in large amount of effluent containing dye as contaminant into the nature. According to study conducted by Axelsson et al. (2006), 10 50 % of the dye used in industry will go to effluent because of the dye molecule might react with hydroxyl ions in the solution giving rise to even more water-soluble hydrolysed molecules. Because of the good solubility of dye in water it will endangered the nature. It is also reported by Sapawe et al. (2012) that 15 % of the total world production of dyes is released in textile industry. This proves that from out of 7ÃÆ'-105 tons of effluent produce large number of dye is discharges as wastewater. Without further treatment to the effluent containing dye contaminant, it can cause extreme problems if not treated legitimately because of dyes are harmful, toxic, mutagenic, carcinogenic to human life as well to another living organism (Sapawe et al., 2012). To treat the dye so many method had been introduced and the best method reported by Malakootian et al. (2015), is by using adsorption method and supported by Marrakchi, Ahmed, Khanday, Asif, Hameed (2017) due to some advantages. From all types of treatment, it can be classified into three categories which are divided for the technologies which are physical, chemical and biological. However, it is hard to treat the dye because of their synthetic origin and mainly complex aromatic structure. All of these technologies possess pros and cons. 2.2.3.1 Physical and Chemical Treatment There are numerous method falls under physical and chemical treatment such as anion exchange resins, cogulations, flotation, electroflotation, electrochemical destruction, irradiation, Ozonation,adsorption, and the use of activated carbon. Physical and chemical treatment is far more effective than biological treatment in decolourizing dye but it will use more energy, chemicals, and biological process hence increasing the capital cost for the treatment (Miao, 1992). Apart from that, it will lead to secondary sludge disposal problems and the release of large volumes of toxic by-products (Malakootian et al., 2015). 2.2.3.2 Biological Treatment Biological have three stages or phases. It is because before the effluent arriving to the biological phase, it will go through some physical and chemical treatment. For comparison to the physical and chemical method, physical and chemical treatment will treated physically or chemically without going through another phases. It is reported by Malakootian et al. (2015) that biological treatment is in effective in decolorizing water because most dyes as azo reactive dyes are highly water soluble, have complex structures, and are stable to light, chemical and biological degradation. The example of biological treatment are fungal biodegradation, bacteria biodegradation, yeast biodegradation, and microbial biosorption, Biological treatment has lower capital cost compared to physical treatment and chemical treatment (Miao, 1992). 2.3 Decolorizing of Dyes by Adsorption Process Absorption has been proved as the best method for treatment wastewater containing dye. It offers noteworthy advantages over customary treatment techniques particularly from the environmental perspective and its simplicity of operation and also more prominent efficiency. Some adsorbents, which are utilized for the expulsion of dye from aqueous solutions with differing achievement include activated carbon, magnesium oxide grafted chitosan, modified bentonite, TiO2 powder, TiO2 nanotube and others. Among all these materials, activated carbon is a standout amongst the most much of the time adsorbents utilized for the removal of dye from coloured waters and wastewaters, yet because of its high generation, recovery and reactivation procedure cost, research has been concentrated on alternative adsorbents with high adsorptive capacity and low cost. Therefore, recently there has been a lot of attention toward using nanotechnology methods. Nowadays using nanomethods, especially by using Mesoporous Silica Nanoparticle, The large surface area allows for binding at a great number of active sites distributed within the framework of the porous materials. The large pores can overcome the pore-diffusion limitation and provide high-speed pathways for gas molecules (Rahman et al., 2015). Apart from that, it is reported that, Mesoporous Silica Nanoparticle which is synthesized from natural sources claimed to safe in handling, cheap and can be generated from cheap resources (Norsuraya et al., 2016) which is bagasse ash in this case. Due to this advantages, the usage and studies regarding Mesoporous Silica Nanoparticle increase exponentially as adsorbent. METHODOLOGY 3.1 Introduction The aim of this study is to synthesis Mesoporous silica from bagasse ash by using green route and to study the performance of the Mesoporous silica in wastewater treatment by utilizing aqueous methylene blue as the wastewater. The mesoporous silica is prepared by carrying out combustion of bagasse to produce bagasse ash and then using Sol-Gel method to make gel from the bagasse ash. The product of Sol-Gel method will undergo hydrothermal synthesis by using formaldehyde, water and without formaldehyde and water to synthesis Mesoporous Silica Nanoparticle (MSN). The MSN produced will be characterize by using Fourier Transform Infrared Spectroscopy (FTIR), Transmission Electron Microscopy (TEM), Brunauer-Emmett-Teller (BET), Scanning Electron Microscope (SEM). The performance study for wastewater treatment to treat aqueous methylene blue by using MSN will be test under four parameter which is the effect of pH, effect of MSN dosage, effect of initial concentration of the dye, and effect of temperature. The research methodology is summarized in the research flow chart in Figure 3.1 below. 3.2 Material and Methods In this study there are six stages of preparations and experiment. Which are the preparation of bagasse ash, preparation of silica gel from bagasse ash, production of Mesoporous Silica Nanoparticle (MSN), characterization of the MSN, Performance study of MSN and characterization of treated wastewater. 3.2.1 Preparation of Bagasse ash The material, apparatus and glassware needed for this stage as shown in table 3.1 Table 3.1: List of Materials, Glassware and Apparatus Materials Apparatus Sugarcane Bagasse Oven Furnace Sugarcane Bagasse can be collected from sugarcane juice hawker at Tampin, Negeri Sembilan. First step need to be taken is to cut the bagasse in small pieces and boil the bagasse to remove the remaining sugar in the bagasse, after that the bagasse need to be wash and rinse by using distilled water to remove impurities. After that, the bagasse will be subjected to oven drying process at 70Â °C 80 Â °C for 24 hours. To obtain ash from the bagasse, combustion are to be carried out in furnace at 800 Â °C for 3 hours at heating rate of 10 Â °C/min. The ash need to be collected and labelled as Sugarcane Bagasse Ash (SBA). 3.2.2 Preparation of Silica Gel from Bagasse Ash (Sol-Gel Method) The material, apparatus and glassware needed for this stage as shown in table 3.2 Table 3.2: List of Materials, Glassware and Apparatus for Sol-Gel Method Materials Apparatus SBA Erlenmeyer Flask 1M Lye Solution (NaOH) (1 litre) Stirrer Distilled Water Beaker 1M Sulphuric Acid (H2SO4) Pipette (25 ml capacity) pH meter Boil 30g of Bagasse Ash and 1 L of 1M Lye Solution (NaOH) in Erlenmeyer flask for 1 hour with a constant stirring to dissolves the silica and produce a sodium silicate solution. Filter the solution through whatman No. 41 ashless filter paper and wash the residue with boiled distilled water. Let the filtrate to cool to room temperature. Reduce the pH of the solution to pH 7 by using 1M Sulphuric Acid (H2SO4) by using titration method and constant stirring. When gel form from the solution from the solution, age it for approximately 18 hours. After the ageing, gently broke the gel and centrifuge at 2500 rpm for 10 minutes. Discard the supernatant and transfer the gel into a beaker and dry for 11-13 hours at 80Â °C to produce xerogels. Wash with deionized water to remove minerals and impurities from the silica 3.2.3 Production of Mesoporous Silica Nanoparticle (Hydrothermal Synthesis) The material, apparatus and glassware needed for this stage as shown in table 3.3 Table 3.3: List of Materials, Glassware and Apparatus for Hydrothermal Synthesis Materials Apparatus Cetyltrimethylammonium Bromide (CTAB) Conical Flask Ammonium Hydroxide (NH4OH) Stirrer Distilled Water Beaker Microwave Mix 0.64 g of cetyltrimethylammonium bromide (CTAB) and 30 ml formaldehyde solution (37 wt %) in 100 ml closed conical flask and stir at 27Â °C for 5 minutes. Quickly add 2.8 ml NH4OH and stir for 30 minutes. Add 2.8 ml of silica prepared in Sol-Gel method and stir vigorously for 24 hours. Transfer the mixture to 100 ml beaker and place it in microwave at 800 Watt for 30 minutes. Filter the product and wash with deionize water and dried it overnight at 60Â °C. Calcinate the dried product in air at 540Â °C for 3 hours to remove surfactants in order to obtain MSNs. Repeat all step by replacing formaldehyde with water and without formaldehyde. The product form is Mesoporous Silica Nanoparticle (MSN). 3.2.4 Characteriza

Hamlet - Movie Critique :: essays research papers

The movie of Hamlet was an excellent, as far as book-movies go. I believe it was produced with focus, reason, and logic. The characters were also portrayed with a good interpretation. There were several changes to the play compared to the book, although the movie was done in such a way that they were not particularly missed, from the movie's point of view. Although, from my point of view, after reading the book, there were several somewhat important scenes and elements missing. The first scene in particular was missed. This played a part in setting the stage and was part of the whole theme throughout the whole play. It was in this scene that the ghost of Hamlet Sr. was first seen and where much of the plot developed. Hamlet Sr. told Hamlet Jr. that he had been killed by Claudius and that he must have revenge, Hamlet Jr. being the person to avenge him. In the book, this carried on throughout the rest of the play and without it the plot was not as concrete from the beginning. The dumb-play and play for the king and court was compressed. In the movie, it consisted of primarily just a dumb-show and then the king got mad. It should have included that first and still had a whole play, in which special lines inserted by Hamlet Jr. were to be read. This did not have a dramatic affect on the way the plot was presented in the movie, but was just noticeable. As far as the casting and setting is concerned, I believe that the director did an excellent job. Obviously, this coming from Hollywood kind of gives it advantages to all previous presentations. Mel Gibson was a great choice for Hamlet, because he is good actor and played his part wonderfully.

Dances of Luzon

Dances of Luzon ( see side bar for pictures of many of the dances ) 1. * Dance: Idaw This dance sometimes has many names and different versions. Most common is this dance depicts the hunting ritual performed before a tribal war. The tribes men would go out and look up and watch for the scared Idaw bird. Which is said to lead the tribe to victory. Also look at the clothing, Philippines being a very hot climate, plus the use of as little material as possible, the traditional clothing was not made to cover much of the body†¦. 2. * Dance : BangaThis dance displays the Igorot women on their way to the river to fetch the daily water supply for thier familys. It shows the skill and strength of the women as they would carry heavy laiden clay pots (Banga) full of water. Their grace and agility while balancing the heavy pots, sometimes stacks 5 high, is a testiment of the Filipino and how hardships become a art form and talent. As a young girl you would start with only one pot. Of course as you become older and more experienced, along with the fact that you could provide more water for your family in one trip.Pots could be stacked as high as 5 or 6. The more pots you could carry showed your skill and also you standing amoung the women of that area. They would all gather and march to the river each day, singing a native song which is represented by the flute and banging of bamboo on iron pots in the dance†¦Ã¢â‚¬ ¦ 3. * Dance : Idudu The family is the basic structure of family life among the Itneg / Tinggian poeple. The caring for the Children is shared by both the mother and father.While the men are clearing the fields, breaking the soil with bamboo and their feet, the women watch the children. Soon as the men are done, they take care of the children while the women do back breaking work. You can see in the dance how the women will take the bamboo baskets in a shaking fashion like drying the rice, while the men are going in circles in background like they are to iling the land. Then you will see the women put down the baskets fold the cloth into a baby while the husband stands aside.Then the women will turn over the baby to the husband, pick up the bamboo and start toiling the land while the men hold and cradle the babys†¦Ã¢â‚¬ ¦Ã¢â‚¬ ¦ 4. * Dance : Ragsaksakan The word means † Merriment†. This dance would be performed after a successful headhunt and also for a peace pact between waring tribles. The colorful hand woven blankets † blankets of life† are worn around the neck while baskets to carry produce or rice are worn upon the head. Some versions of this dance use the † Banga † instead of the basket.Dances of Mindanao – ( See side bar for pictures and more info) 5. * Dance : Singkil Sinkil dance takes its name from the bells worn on the ankles of the Muslim princess. Perhaps one of the oldest of truly Filipino dances, the Singkil recounts the epic legend of the â€Å"Darangan† of the M aranao people of Mindanao. This epic, written sometime in the 14th century, tells the fateful story of Princess Gandingan, who was caught in the middle of a forest during an earthquake caused by the diwatas, or fairies or nymph of the forest.The rhythmic clapping of criss-crossed bamboo poles represent the trees that were falling, which she gracefully avoids. Her slave loyally accompanies her throughout her ordeal. Finally, she is saved by the prince. Dancers wearing solemn faces and maintaining a dignified pose being dancing at a slow pace which soon progresses to a faster tempo skillfully manipulate apir, or fans which represent the winds that prove to be auspicious. The dancers weave expertly through criss-crossed bamboos. 6. * Dance : Asik This is performed by a solo madien, adorned with fine beads and make up, long head scarf.She would dance to win the favor of her Sultan master. Many time the girls would dance to win the hearts of her master or to make up for a wrong she had d one. She would give her whole heart and soul into this performance to soften the heart of her master to accept her†¦ Visayas Dances – ( see pictures in the side bar ) 7. * Dance : Sayaw Sa Banko This dance is native to the barrio of Pangapisan, Lingayen, Pangasinan, and demands skill from its performers who must dance on top of a bench roughly six inches wide. 8. * Dance : TinklingTinnikling is considered the national folkdance with a pair of dancers hopping between two bamboo poles held just above the ground and struck together in time to music. Originated from Leyte Province, this dance is in fact a mimic movement of â€Å"tikling birds† hopping over trees, grass stems or over bamboo traps set by farmers. Dancers perform this dance with remarkable grace and speed jumping between bamboo poles. 9. * Dance : Subli The term â€Å"subli† is from two tagalog words â€Å"subsub† meaning falling on head and â€Å"bali†, which means broken.Hence, the dancers appear to be lame and crooked throughout the dance. This version is originally a ritual dance of the natives of Bauan, Batangas, which is shown during fiestas as a ceremonial worship dance to the town’s icon, the holy cross 10. * Dance : Maglalatik Originally performed in Binan, Laguna as a mock-war dance that demonstrates a fight between the Moros and the Christians over the prized latik or coconut meat during the Spanish rule, this dance is also shown to pay tribute to the town’s patron saint, San Isidro Labrador.It has a four-part performance such as the palipasan and the baligtaran showing the intense battle, the paseo and the escaramusa- the reconciliation. Moro dancers wear read trousers while the Christian dancers show up in blue. All dancers are male; with harnesses of coconut shells attached on their chests, backs, thighs and hips Project In Physical Education 2 Philippine Folk Dances

Hairy Ape Character Analysis Essay

Style â€Å"The Hairy Ape† was done in the expressionist style of theater. Expressionism is the theatrical technique which will use the staging and setting to show the characters inner emotion or the keep the theme constantly within the audience’s sight. In Expressionism, characters do not act or talk the way they really would, everything is extreme to prove a point. In Expressionism plausibility is deliberately altered by the author to make the theme clear. Characters Yank Yank represents the lower class. He depicts the manner in which it is the force at the bottom of society that allows society to run. Yank also represents how people can be trained and persuaded to be comfortable in a situation that may not be best for their personal development and become unable to fit in elsewhere. Yank is depicted in the play as â€Å"Neanderthal† and â€Å"ape-like†, not only in his speech, but also in his physical description. Yank and his shipmates are initially described as â€Å"?hairy-chested, with long arms of tremendous power, and low, receding brows?† The ship’s crew is kept in constant hunched over position due to his quarters on the ship Yank, at the outset of the play is even proud of his position. Yank is so comfortable in his position that he lives in false security that he controls his surroundings. He feels that it is he who is better. He repeatedly states how it is he who makes the ship run. Not even real izing that he has mentally dehumanized himself; he states that he is the ship. Yank seemingly has no issue with his position, has never given it any thought and criticizes other shipmates who do, until he is observed by Mildred Douglas, who proclaims upon seeing him â€Å"Oh, the filthy beast†. It is at this point that Yank realizes he not simply a part giving the ship motion, he is more than an animal or creature, he is a man. He is infuriated by Mildred’s comment and seeks to prove his worth. Yank’s desire to prove himself throws him into conflict; he is no longer able to fit in as he did in his prior position on the ship and finds he does not belong in society outside the ship either. During Yank’s moments of thought, of attempting to find himself and his position in life O’Neill depicts him in the same position as Rodin’s sculpture â€Å"The Thinker†. This particular sculpture was Rodin’s depiction of what he saw as a brutish, almost Neanderthal type man, contemplating his existence and place in the world, which describes Yank’s position quite well. Mildred Douglas Mildred Douglas is the upper class of society. She claims sociological interest when she requests a tour of the stokehole, but does not truly perform any kind of social work in the play. She claims herself a by-product of her wealthy society. Mildred served as a tool to bring about Yank’s personal dilemma. Paddy Paddy is a nostalgic character. He speaks of when he was a sailor as a young man and being at one with the sea. Paddy represents when man and nature were one. Paddy is resigned to the position he is in now, but longs for his good old days. Yank is unable to relate to this perspective, as he views himself as part of the ships’ mechanics. Long Long is a glimpse to the future; towards social change. Unlike Yank, Long is aware of the inhumane treatment of the ship’s stokers. He speaks of the separation of the classes and its unfairness. Long speaks of ideas such as the men on the ship being â€Å"voters and citizens† and how the ships crew are more than merely slaves. Yank is unable to understand Long’s point of view or his class-consciousness, instead, Yank considers him a preacher and a wimp.