Cassava (Manihot esculenta Crantz), also named yuca, is a perennial woody shrub with tuberous roots in the family Euphorbiaceae. Cassava is now widely cultivated in tropical and subtropical regions of Asia, Africa, and Latin. The world production of cassava in 2012 was estimated as tonnes with the top producers being Nigeria, Indonesia, Brazil, and Thailand (FAO, 1994). Being very rich in starch (90% of the dry matter), Cassava is mainly used in traditional human foods, but is also used industrially for the production of starch and starch derivatives, e.g. dextrins and glucose (Zhu, 2015).
Polypyrrole can be prepared either by chemical or electrochemical polymerization. In the electrochemical polymerization, the pyrrole (Py) is oxidized by
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The used electrodes were stainless steel plates 4 cm2 area (2x2). The reference electrode was saturated calomel (KCl). The cathode of each accumulator was synthesized using p-toluenesulfonic acid (PTS) as a dopant, in which solutions of pyrrole (Py) / pTS 0.1 mol / L were prepared. Material obtained is polarized with 0.1 mol / L LiClO4 solution also by chronoamperometry using a potential of 0.5 V and 600 s. Accumulator anode was synthesized using in this case indigo carmine (IC), in solutions 0.1 mol / L of p / IC. After the film was polarized with LiClO4 0.1 mol / L solution using a potential -1.3 V. After being prepared, movies ppy / pTS and ppy / IC are attached to biopolymers and separated by a piece of recyclable paper from the same area.
2.3. Experimental design
The purpose of this work is to understand the influence of different mixtures of raw coal, corn cob and binder solution over the heat value and sulfur content in the briquette combustion emissions. Based on this, it was carried out experimental conditions for synthesis and develop of electrical properties of electrochemical accumulators.
Based in Table 1 we realize a multi-objective optimization, in order to obtain the best chemical compositions for cassava starch biopolymers, which allow producing electrochemical accumulators with higher electrical
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Accumulator specific charge using composition 1 (no addition of lithium perchlorate) shows an optimal range of 0.3 – 0.5 mm thickness and 50-55 % of relative humidity, in the same way, this behavior was observed for accumulator specific capacity. In case of accumulator specific energy and specific power, optimal range of thickness and relative humidity were 0.3 mm and 50-55 % respectively. For this composition of biopolymers, it is clear that electrical properties of these accumulators are due to ppy/pTS and ppy/IC synthesized electrochemically.
Electrical properties for electrochemical accumulators assembled using cassava starch biopolymers with chemical composition 2 are shown in Figure 2. For accumulator charge capacity and specific charge, it is necessary to obtain 1.3-1.5 mm biopolymers thickness as well as 50-55 % relative humidity. At this point, the effect of introduction of lithium perchlorate (1.5 g) could influence in thickness of cassava
“Strange Fruit” by Billie Holiday conveys the inhumane, gory lynchings of African-Americans in the American South, and how this highly unnatural act had entrenched itself into the society and culture of the South, almost as if it were an agricultural crop. Although the song did not originate from Holiday, her first performance of it in 1939 in New York City and successive recording of the song became highly popular for their emotional power (“Strange fruit,” 2017). The lyrics in the song highlight the contrast between the natural beauty and apparent sophistication of the agricultural South with the brutal violence of lynchings. Holiday communicates these rather disturbing lyrics through a peculiarly serene vocal delivery, accompanied by a hymn-like
Catalase is a common enzyme that is produced in all living organisms. All living organisms are made up of cells and within the cells, enzymes function to increase the rate of chemical reactions. Enzymes function to create the same reactions using a lower amount of energy. The reactions of catalase play an important role to life, for example, it breaks down hydrogen peroxide into oxygen and water. Our group developed an experiment to test the rate of reaction of catalase in whole carrots and pinto beans with various concentrations of hydrogen peroxide. Almost all enzymes are proteins and proteins are made up of amino acids. The areas within an enzyme speed up the chemical reactions which are known as the active sites, and are also where the
First, A (3.348 g, 0.031 mol) and triethylamine (6.060 g, 0.060 mol) were added to a glass flask. Then, B (5.850 g, 0.030 mol) was added dropwise to the resulting reaction mixture over a period of 2 h, and the temperature was maintained at 5 °C. The reaction mixtures were carefully maintained at 80 °C for another 5 h. Finally, the reaction mixture was washed with diethyl ether, separated by reduced pressure suction filtration, and dried in a vacuum oven at 100 °C for 12 h to afford a white solid powder, namely, poly-N-aniline-phenyl phosphamide (PDPPD) in 93%
The film begins in 1972 in Uganda. It centers around an Indian family that is being forced out of their home by General Idi Amin, the new regime. This happens because Jay (the father of the main character, Mina) gives an interview with BBC in which he badmouths the General. Amin does not take to this too lightly and expedites the removal of all “Asians” from Uganda. Jay and his family, along with others are exiled to London. Eighteen years pass by and the film refocuses on Jay, his family and their lives in Greenwood, Mississippi. Mina is now twenty-four years old and works at a motel to help support her family. Her mother, Kinnu, owns a liquor store and her father, Jay, spends a majority of his time time writing to the Ugandan government about suing them in order to regain his lost property.
The recommended application rate of each fungicide and if the air treatment really can remove senesced flowers effectively.
A major issue that is occurring in America is a phenomena known as “food deserts”, most are located in urban areas and it's difficult to buy affordable or good-quality fresh food. Whereas in the past, food deserts were thought to be solved with just placing a grocery store in the area, but with times it has become an issue that people are not picking the best nutritional option. This issue is not only making grocery store in food deserts are practically useless and not really eliminating the issue of food deserts because even when they are given a better nutritional option, and people are not taking it. In my perspective, it takes more than a grocery store to eliminate ‘food deserts’. It's more about demonstrating the good of picking the nutritional option and how it can help them and their families. For example, “Those who live in these areas are often subject to poor diets as a result and are at a greater risk of becoming obese or developing chronic diseases.”(Corapi, 2014).
The war in Sierra Leone changed many lives dramatically. It started in 1991 and ended in 2002. Between the Revolutionary United Front (RUF) and the Rebels. For Ishmael and Mariatu both were brought in the war around 1993 when they were about eleven or twelve years old. Ishmael and Mariatu, in the two books, A Long Way Gone and The Bite of the Mango, Both Ishmael and Mariatu have experiences in the War. The two children both have separate stories of their unbelievable journeys through the war and their life after. Although they were both pulled into the war against their will, Mariatu was pulled in as a victim and Ishmael was pulled in as a perpetrator.
Soluri, John Banana Cultures: Agriculture, Consumption, & Environmental Change in Honduras & the United States. Austin: University of Texas Press, 2005.
Figures 3a-d show the effect of polymerization time on %GY (Fig. 3a) ; %GE (Fig. 3b); %TC (Fig. 3c) and %HP (Fig. 3d) at four different temperatures ( 50 0 ; 60 0 ; 70 0 and to 80 0C ). It is evident that , as the reaction time became longer , all polymer yield , except %GE , increased. The polymerization time corresponds to 180 min. brought about the maximum percentages for the positively dependence of polymer criteria.
Cultures are becoming obsessed with pumpkin spice flavors because it’s just a good flavor. Other reasons why people are obsessed because it’s a newer thing. I really don’t know why everybody likes it I guess just because it’s good. I mean how could you pass up a pumpkin spice latte or pumpkin spice Pringles, pumpkin spice doughnuts or anything like that. People also like pumpkin spice latte because it’s caffeine. The Pumpkin Spice Latte is a coffee drink made with a mix of traditional fall spice flavors.
Mali is a landlocked country in North West Africa. It is bordered with Algeria to the South, Niger to the East, Burkina Faso and Cote d’Ivoire to the south and Senegal and Mauritania to the west. Modern day Mali is nowhere close to what it was at its peak in the 1300s. It was a flourishing empire, and one of the three empires that controlled trans-Saharan trade. It covered twice the size of modern day France, meaning around 1,500,000 kilometres square. However during the Scramble of Africa, France seized control of Mali making it a part of French Sudan. After the independence from the French, French Sudan became the Federation of Mali. However Senegal left, leaving Sudan occupying Mali. After a coup in 1991, Mali became an independent country. Now however, Mali is 1,240,000 Kilometres Square with a Gross Domestic Product of just 631 dollars per capita, compared to 43,185 dollars per capita in the United Arab Emirates. Mali has a population of around 14 million people. The southern part of Mali is more populated because it features the Niger and Senegal rivers. Mali’s prominent natural resource is gold. Actually it is the third largest producer of gold in all of Africa, but however the country is still poor. One of the arising problems in Mali, is humanitarian rights. The Tuareg rebellion, and a political upheaval generated by a March military coup led to a deterioration in respect to the human rights in Mali. After the occupation of the North, the respect to the human rights in Mali fell drastically forcing about 400,000 northern residents being displaced. Several armed groups, took control of territories in the North, and abused civilians. This abuse includes sexual abuse, looting and pillaging houses, and setting executions, rec...
“Acai is a berry grown on the acai palm tree (Euterpe oleracea), which is native to tropical Central and South America and grows mainly in floodplains and swamps “(Ulbricht et al. 2012). Acai is being used as an alternative medicine for several diseases or conditions. In the United States acai is being used for weight-loss, anti- aging remedies, antioxidants, and as an oral contrast agent for magnetic resonance imaging (MRI) of the gastrointestinal tract (National Center for Complementary and Alternative Medicine 2012, NCCAM). Before we can use an alternative medicine treatment there needs to be research or trials done to prove the efficacy of the treatment. There are studies about acai that prove or disprove the claims of its use. The evidence or the science proves some uses of acai, but there is more research that needs to be done. There are contraindications for acai just like with all medicines and people need to be aware of this before they try any new medicines or treatments.
Foods from Africa, which have impacted North American cuisine are numerous, and common in the everyday eating habits of Americans. In the 21st century, Americans take for granted the history of the food they eat, and the origins of the foods that are eaten today. In the early part of the history of the United States, people of European descent brought recipes from home and adapted their recipes to the ingredients which were available. The slave trade was directly responsible for what many Americans think of as American food, and those foods are traceable to Africa. Because slaves incorporated their own foods into the everyday lives of their masters, some of the unique foods from Africa and their history are not well known today. American
26). This dish was very simple and did not require too much time, but I was still able to gain an appreciation for the types of meals that are cooked by Moroccans. Many of the ingredients that were incorporated into this dish are also used in a vast variety of dishes within North Africa. The paprika, cumin garlic, parsley, and red pepper flakes gave this dish a unique flavor that is different from typical eggs and vegetables. There was a hint of spice that seasoned the eggs and vegetables perfectly. The eggs were soft and warm, while the vegetables added a slight unique crunchy and soft texture. Although this dish did not incorporate staple ingredients like lamb, bread, or fish, it did incorporate many of the spices and vegetables that are used in many dishes and on a daily basis. I was able to gain a great deal of appreciation for the types of meals that are prepared in a Moroccan
... and nutritious experience by giving people actual experience to see, feel and taste what is nutrition about (Hegler, 2010).