Looking At Migrant Mother English Literature Essay Essay Example

Looking At Migrant Mother English Literature Essay Paper Photographs can assist people maintain the of import minutes in their lives. Particularly in history, exposure aid research workers understand more about our history. At a cantonment for seasonal agricultural workers of Los Angeles, Dorothea Lange took Migrant Mother in 1936. Firenze Owens, the adult female in the image, neer gave permission to Lange to utilize her image or the image of her childs ( 100 exposure ) . Dorothea Lange besides promised with Owens that those images would neer be published. However, the really following forenoon, Lange s image was published on the front page of all the newspapers along with an article about the hungriness of these American people who were working these Fieldss for small no wage, and this exposure has become a photographic icon of the Great Depression in America. Migrant Mother is important to society because it reminds us of economic crisis in 1936, the troubles of American people at that clip, and the love of a female parent for her kids. We will write a custom essay sample on Looking At Migrant Mother English Literature Essay specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Looking At Migrant Mother English Literature Essay specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Looking At Migrant Mother English Literature Essay specifically for you FOR ONLY $16.38 $13.9/page Hire Writer First, when I look at the exposure, the focal point of this exposure will be the adult female s face. The constructions of her face such as eyes, nose, oral cavity, eyebrows, mentum, and eyelashes show that she is worried, worn out and merely obviously dog-tired. Besides that, the imperfectnesss of her hair, hair line, cheeks, weaponries, fingers tell us that she is soiled and hapless. She wears a shirt covered with a jacket that is on the left arm. In the background of exposure, we observe the kids concealing their faces behind their female parent. The kid on the left has a dirty jacket and it does nt suit, while the kid on the right has a snug shirt. The 3rd kid in the female parent s weaponries is worn down and hungry while covered with a dirty cover. Beside, this exposure is black and white colourss. Even though this image contains no colour, visible radiation and angle are more of import. The kids in the image are darker than the adult female, so it makes her face is brighter an d more emotional. In the image, the adult female s face is the merely seeable to viewing audiences, so it makes her facial is more interesting. Through her face, we can understand more about her life. She looks tired and concern for her and her kids s hereafter. She can non happen a occupation after her hubby died due to illness ( Migrant Mother ) . She moves topographic point to topographic point to happen a occupation that helps her can take attention of her kids. This adult female needs nutrient, H2O, vesture, and even a bath. On the other manus, the manner the kids lean to her shoulder make us experience like their female parent is a beginning of hope and peace. Those kids feel peacefully after their female parent s protection. The kids rely on their female parent, while the female parent relies upon herself merely the same. The lensman took the exposure at the perfect angle, so the adult female appears clearly and emotional. The absence of colour is what makes the exposure so intense. Looking at the picture taking, it reminds us the Great Depression from 1929 to early 1940s. At that clip, the economic system in America, Europe and other industry of the universe collapsed. It was the longest and most terrible depression of all time experienced. By 1933, 11000 of the United States 25000 Bankss had failed. By 1932, United States fabrication end product had fallen to 54 per centum of its 1929 degree, and unemployment had risen to between 12 and 15 million workers, or 25-30 per centum of the work force. ( Modern American Poetry ) . The Great Depression leads to the troubles and the concerns of American people. Work force lost their occupations, and adult female began to recognize that they had to work to keep their suited life conditions. Everyone had to happen the manner that they could last in that period. Workers got 35 cents for three hebdomads work in the Fieldss ( Uys ) . It is a awful manner to populate, and it was unsmooth and awful at that clip. However, the love of female parent will neer alter even in the hardest clip. Owens, the adult females in the exposure, has seven kids and her hubby past off. Her sisters and brothers wanted to raise her kids, but she did nt desire to. She said she wanted to see her kids turn up by her ain eyes. She can make everything for her kids. She did nt eat sometimes, but she made certain her kids Ate. She neer had a batch, but she ever made certain her kids had something ( Migrant Mother ) . Migrant Mother is one of the most touched images in the Great Depression. This picture taking helps people retrieve how difficult American people had to face during the Great Depression, and the female parent s love ever present in every clip and at everyplace. Absence of colour, focal point and background make the exposure becomes astonishing. The exposure is perfect the manner it is. No affair what person may see as the most of import facet of Migrant Mother , it is undeniable that it is genuinely an unbelievable icon from the epoch of the Depression, and still is an icon to this twenty-four hours. Work Cited Uys, Errol. What Life Was Like During the Great Depression. A What Life Was Like During the Great Depression. N.p. , n.d. Web. 14 Oct. 2012. lt ; hypertext transfer protocol: //www.erroluys.com/WhatLifeWasLikeintheGreatDepression.htm gt ; . 100 Photographs That Changed the World by Life The Digital Journalist. 100 Photographs That Changed the World by Life The Digital Journalist. N.p. , n.d. Web. 02 Oct. 2012. lt ; hypertext transfer protocol: //digitaljournalist.org/issue0309/lm19.html gt ; About the Great Depression. About the Great Depression. N.p. , n.d. Web. 09 Oct. 2012. lt ; hypertext transfer protocol: //www.english.illinois.edu/maps/depression/about.htm gt ; Migrant Mother. A Migrant Mother. N.p. , n.d. Web. 8 Oct. 2012. lt ; hypertext transfer protocol: //www.picture- america.com/LuceB/Migrant-Mother-Project/migrant-mother-main.htm gt ; . Migrant Mother. Migrant Mother. N.p. , n.d. Web. 02 Oct. 2012. lt ; hypertext transfer protocol: //www.picture america.com/LuceB/Migrant- Mother- Project/migrant- mother- main.htm gt ; .

Law and Policy in Society

Law and Policy in Society It is not an everyday occurrence that someone must decide the destiny of another's life. The quandary of making a judgment that someone must die in order for the others to survive, can clearly be troubling. The procedure in which the termination of one's life may be easy to make, but to justify that choice is the most complicated one.Today, you can have an abortion if your child is mentally retarded... if it is in the first trimester of a woman's pregnancy. It used to not be this way and when dealing with the law as evolutionary adaptation it merely tries to make things better off for society now and in the future. You take one step at a time and when you look at the years before us, evolutionary adaptation has come a long way. With these new laws or changed laws coming into play it is essential that they are followed to better our society.English: President George H. W. Bush signs the Ame...Law as Morality is just on of the many laws that differentiates between state to state but th is one also differentiates from person to person. Law as morality is a law that comes from what you think is morally correct. Morality is the choices we make, and the actions we take. Moral people behave according to personal and public ethics. Immoral people deviate from established behavior. Since the purpose of laws is to condone one type of behavior and condemn another, the making of laws impacts our actions. In a situation such as a set of twins whom are connected at birth and one is going to have to die to save the other. The only thing is, is that one of the twins is healthier than the other, so which one do you kill? Law and morality play a large role...

Intermediate Micro economics. In absence of govt. intervention, market Essay

Intermediate Micro economics. In absence of govt. intervention, market resources allocated to health tend to be below the social - Essay Example However, this is only the case when a government is in question. There are several debates regarding the issue of giving healthcare in the hands of private sectors, but there is a speculation regarding the treatment of healthcare as that of a business with a sole purpose of achieving profits. On the other hand it is also said that in order to maintain a market share in healthcare, the private sector players will strive to provide the best type of technology, which would be more convenient and advanced, and heavy on the people’s pockets. A study of the importance of the role that a government intervention plays in the healthcare also brings to light the adverse effects of its absence. The concept of a socialist system of government believes that it is the government’s job to provide all basic facilities to the people in general with no disparities between income classes and backgrounds as long as they are all citizens of the same society. Basic necessities like education and healthcare should be provided to all, unlike the competitive markets for other consumer commodities. Multi-tier system offers different levels of quality but a single tier system is the true essence of a democratic socialist system where all people are equal when it comes to basic rights. The government provide healthcare through subsidies that are derived from the pool of general taxation. Where socialism is flexible in terms of existence of private entities too, it is often mistaken for a democratic system. The Healthcare system in the US has been center of much controversy for the past few years. This is because of the high costs of healthcare as a result of the influx of an array of private medical institutions and lack of government regulations to hamper their excessive profiteering. This has resulted in the emergence of insurance based healthcare, usually backed by employers as it is not affordable by the general public (Cfeps.org, 2013). The current government has offere d incentives for a better system in place with maximum government intervention to ensure that the masses are provided with adequate healthcare reasonably. Healthcare is a major concern for the people all over and history proves that it is imperative for the government to have a regulatory body in place to ensure people’s satisfaction over this dire need of theirs. Private and publicly funded healthcare systems running in some countries in the world have been a point of controversy. This is because one side holds the notion that provision of healthcare should be government funded and be provided as a free service to the people from the government revenues. Whereas, public funded healthcare which is provided free, drawing from the pool of health tax imposed on the general public, has been seen as an effective system as well (Saltman & Busse et al., 2004). This is where the economic externalities come into play as well since not all the people are availing expensive healthcare f acilities, and some of them who are, are those who have not paid fully for it, resulting in the negative externality for the former and a positive one for the latter. Government intervention in the private markets in the form of imposing regulations and restrictions have been viewed as a hindrance because this tends to de-incentivize the induction of new and more technologically advanced health based companies in the system (Lewis, 2000).

Problem question Essay Example | Topics and Well Written Essays - 2000 words

Problem question - Essay Example According to section 143 (1) CJA 2003 openly stipulates that the graveness of a certain offense must be established by revisiting two main elements; the guilt of the criminal and the damage that resulted from the crime or potentially being rooted by the crime (W100 team, 2012; p. 55). From Jake’s solicitor point of view, he must be tried as a first offender considering the graveness of the offense. From the information provided in the case Jake has got no previous criminal records or convictions. Hence the reason for the magistrate to pass an appropriate sentence that will not harm him more. Revisiting factor number one concerning guilt or culpability of the lawbreaker, it is partitioned into four main parts according to degree of seriousness. The offender may have had the objective to commit to cause damage or injury to the victims. He/she may have been careless in causing injury to the point that he/she knows harm will be caused but he/she still goes forward to commit the cr ime. Besides, the offender could have had facts about the impending risks of causing harm but he/she did not have the intention to cause injury. Lastly, the criminal could be totally negligent of the risks and the likely harm. Basing on the facts given Jake falls in the least seriousness to an extent that he was totally negligent of the risks involved. Jake committed the crime on impulse without putting in mind the impending risks. He had the assumption the owner had already left in hurry and that the said owner irritated him in addition to his friends’ irritation and ridicule of his entire situation. Therefore Jake must be charged under the least seriousness or culpability. Secondly, the harm caused during the criminal act counts a lot for magistrates’ evaluation. Though the state of harm is hard to classify, section 143 (1) CJA 2003 makes an effort to group harm in three wide headlines that may be used during the court proceedings or trials of the offender (W100 team , 2012; p. 55). Injury to persons or victims could be rape, psychological harm or loss of finances; destruction to the society which could encompass destruction of public health facilities hurt to the national safety and lastly harm to the animals. Though from the facts given, the four year child got scared to a point of not being left all alone for more than 3 months, Jake was not aware that his actions could come in the line of the a child. Besides, the mother being stressed to an extent of attending counseling for six sessions, Jake had no intentions to scare anyone. If by any point she got scared, then it is clear that her actions with those of the child scared her off. Jake was hoping for a peaceful job; where he expected no one to spot him. From the series of events in the information provided it is apparent that as much as the bench of magistrates can entirely blame Jake for the offences given, at the same time one must note that Jake acted on impulse and not on intent. The s olicitor must also use other factors such as mitigating and aggravating factors in defending Jake. These factors are vital in ruling judgment upon the accused or offender.

Ncm 512 session long project module 4 Negotiation Styles and Essay

Ncm 512 session long project module 4 Negotiation Styles and Communication (unites states post office) - Essay Example The shooting led to 6 people being killed on the spot and one person was seriously injured in this event. The underlying issue of this shooting was that the person was waiting for a long time and was not being served. The parties to the conflict include the lady shooter and the employees of the postal service. The chosen party for this paper is the postal service employees. There was no clear negotiation that was brought out here in this case. The angry lady instead of taking up the issue with the employees went on to take a serious step of opening fire to the building. There was a slight negotiation that was present where the lady showed signs of urgency and her body language did show a level of urgency. However my side of the parties seems to have ignored this urgency and have not been able to provide the required service to the lady. There was clearly no verbal message that was shown by the lady except the one request of asking the employees to deal with her requested service. The negotiation method adopted for this case was not a cooperative one in any manner and there was more of a competitive behavior that was seen which led the lady to take the intense step of shooting at the employees of the organization. Considering myself in this position as the employee at the counter, I would have acknowledged the request of the lady and would have explained to her that once I was done with the other customer, she would be attended to next. If there was a possibility for another employee to cater to her, I would have requested my coworker to deal with the situation. Also, based on this experience, I would have suggested to the company the need for two counters one which dealt with the urgent requests while the other which deals with the normal work. The conflict is one which cannot be anticipated, hence any decision taken at the spur of the moment would be the best that one could do. Hence I personally believe that nothing could

Performance of Raspberry-Like Gold Nanoparticles (Au RLNPs)

Performance of Raspberry-Like Gold Nanoparticles (Au RLNPs) Improvement of Stability and Catalytic Performance of Raspberry-Like Gold Nanoparticles by Silica Coating High Catalytic Performance of Raspberry-Like Gold Nanoparticles (Au RLNPs) and Enhancement of Stability by Silica Coating Kiouk Seo, Hien Mai Duy and Hyojong Yoo* Abstract. The raspberry-like gold nanoparticles (Au RLNPs) synthesized through the reduction of HAuCl4 by the use of NaOH and Brij35 surfactant show high catalytic activities in the reduction of 4-nitrophenol and ethanol electrooxidation. The enhanced catalytic activities of Au RLNPs are mainly due to their high surface area. However, Au RLNPs easily change to the spherical or aggregated nanoparticles in a treatment with acids, thiols, and cationic surfactants (ex, CTAB)), and are difficult to sustain the catalytic activities. To improve the stability and applicability, Au RLNPs core–silica shell nanoparticles (Au [emailprotected]2 NPs) were successfully synthesized in solution without losing their original morphologies through a simple solution-phase sol-gel process with the assistance of surface-stabilizing polymeric agent (Polyvinylpyrrolidone (PVP)). In comparison with Au RLNPs and other Au nanoparticles, Au [emailprotected]2 NPs could be more easily recovered and recycled in the repeated catalytic reactions. Keywords Raspberry-like gold nanoparticles (Au RLNPs), Silica coating, Catalytic reduction, Ethanol electrooxidation, Polyvinylpyrrolidone (PVP) 1. INTRODUCTION Noble metals have gained much attention over the past two decades due to their potentials in a wide variety of applications including energy conversion[1][2], chemical and biological sensing[3], and bioengineering[4]. Tremendous research efforts have been devoted towards the exploration of how to design nanomaterials with varied topographies that has led to the discovery of their fundamental size-, shape-, and component-dependent properties and the development of new applications[5][6][7]. Moreover, it has theoretically and experimentally found that arrays of asymmetric surface features, particularly deviations from spherical geometry, mainly impart unique anisotropy in material properties7. Apparently, to achieve such desired anisotropic topographies strict control is required. Conversely, this leads to a generation of particles with novel properties from the same materials by simply tuning the particle morphology. Furthermore, anisotropic geometry offers numerous unique features an d functionalities that are either difficult to obtain or even hardly obtained by simple size-tuning in spherical counterparts. Morphology of nanoparticles also strongly affects the catalytic performance. This is due to the surface anisotropy possessing a high density of low-coordinated atoms such as steps, edges, and defects serving as catalytically active sites which can markedly affect chemical and physical properties of nanoparticles[8]. Among those colloidal gold (Au) nanoparticles exhibit not only highly tunable architecture-dependent optical properties but also show excellent performance and high selectivity in a variety of heterogeneous green catalytic processes [ref][9][10]. For a better stability, catalytic performance, and reusability of Au nanoparticles, engineering new nanocatalyst system is thus considered one of the most critical tasks. Recently, in our group, we successfully synthesized raspberry-like gold nanoparticles (Au RLNPs) with rich edges and high surface areas through the reduction of HAuCl4 by Brij35 surfactant under basic condition in a controllable fashion [ref]. The synthesized Au RLNPs possess high surface areas and show the unique, highly-red shifted surface plasmon resonances (SPRs) due to the rough, raspberry-like surface of Au RLNPs. These structures also have high surface energies due to their plenty of tips and edges. These nanoparticles are stable and retain their raspberry-like geome try in basic or neutral conditions; however gradually reshape to the spherical geometry under a specific circumstance such as acidic condition. In order to exploit the unique shape-dependent properties of the Au RLNPs in a variety of catalytic applications, further modifications of nanoparticles such as endowing core-shell structure are thus required. Metallic nanostrutures of several different shapes have been coated with silica since the silica shells used as the coating material show substantial enhancement in the stability of the metal cores, particularly in aqueous solvents. Moreover, metallic nanostructured surface can readily functionalized by subsequently coating with silica and using silane-coupling reactions [ref]. Additionally, silica shells are chemically inert, transparent in the visible and IR regions of the spectrum, and readily converted to mesoporous layer [11]. For the direct encapsulation of Au nanoparticles within silica shells, the conventional techniques is employing coupling agents with silane group for the growth of silica shells on the surfaces of as-synthesized Au nanoparticles via the Stà ¶ber method [ref]. However, we experimentally found that directly applying this method to coat Au RLNPs brought challenges since the unusual size changes of Au RLNPs without disturbing the rough surface occurred. Herein, we report the synthesis of Au [emailprotected]2 NPs in solution through a simple solution-phase sol-gel process. To protect the high-energy surface of Au RLNPs, Polyvinylpyrrolidone (PVP) was used prior to the condensation of TEOS as a polymeric stabilizer. Au [emailprotected]2 NPs showed great enhancement in stability under the strongly acidic condition. The catalytic performance, recovery, and reusability of both Au [emailprotected]2 NPs and Au RLNPs were investigated using the reduction reaction of 4-nitrophenol (4-NP) as a reaction model. We also found that and Au RLNPs were capable of electrocatalyzing alcohol oxidation reactions in alkaline media. 2. EXPERIMENTAL DETAILS 2.1. Reagents Polyoxyethylene glycol dodecyl ether ((C2H4O)23C12H25OH, Brij35, Acros Organics), hydrogen tetrachloroauratetrihydrate (HAuCl4†¢3H2O, 99.9%, Sigma–Aldrich), polyvinylpyrolidone ((C6H9NO)n, PVP10, average mol wt 10,000, Sigma–Aldrich), 4-nitrophenol (O2NC6H4OH, 99%, Sigma–Aldrich), sodium hydroxide (NaOH, 97%, Sigma–Aldrich), ammonium hydroxide (NH4OH, 28-30 wt % ammonia, Sigma–Aldrich), tetraethyl orthosilicate (Si(OC2H5)4 98%, Sigma–Aldrich), hexadecyltrimethylammonium bromide ((C16H33)N(CH3)3Br, 99%, Acros Organics), (3-mercaptopropyl)methyldimethoxysilane (CH3Si(OCH3)2CH2CH2CH2SH, 95%, Alfa Aesor), HCl, HNO3, and ethyl alcohol were used as received. All stock solutions were freshly prepared before each reaction. Prior to use, all glassware was washed with Aqua Regia (volume ration of 3:1 of concentrated HCl and HNO3; Caution: Aqua Regia is highly toxic and corrosive and must be handled in fume hoods with proper personal protection equ ipment) and rinsed thoroughly with deionized water. 2.2. Synthesis of raspberry-like gold nanoparticles (Au RLNPs) Au RLNPs with the mean size of approximately 60-70 nm were prepared according to our previous literature [ref]. Briefly, an aqueous Brij35 solution (1 mL; 19.3 wt%) was well mixed with NaOH (aq) (100  µL; 100mM) by shaking for 30 seconds. To this mixture, HAuCl4 (aq) (50  µL; 10 mM) was added, and shaken vigorously for 1 minute. The pale yellow reaction mixture then turned to blue within 5 minutes at room temperature. To make sure a complete reaction, this mixture was allowed to react for over 20 minutes before being collected by centrifugation (5 min; 13500 rpm), and redispersed in deionized water. 2.3. Synthesis of Au RLNPs@SiO2 NPs The preparation of Au [emailprotected]2 NPs was as follows: firstly, the as-synthesized Au RLNPs were dispersed in 1 mL of deionized water. Next, 0.235 mL polyvinylpyrrolidone (PVP10) aqueous solution (128 mg of PVP10 in 10 mL of deionized water) was added to the Au RLNPs solution. The resulting mixture was then stirred at room temperature for 12 hours to ensure complete adsorption of PVP on Au RLNPs. Afterward, the PVP-capped RLNPs were purified by centrifugation (5 min; 13500 rpm), and redispersed in solvent mixture containing 1 mL deionized water and 7 mL ethyl alcohol. In the next step, tetraethylorthosilicate (TEOS, 0.03 mL) and ammonium hydroxide (0.2 mL of 14.8 M NH4OH (aq.)) were sequentially added to the PVP-capped Au RLNPs aqueous solution and the reaction mixture was further stirred at room temperature for 4 h. After the completion of the reaction, the resultant Au [emailprotected]2 NPs were centrifuged, and purified by repeatedly washing in ethanol and centrifugation. 2.4. Catalytic reduction of 4-nitrophenol The catalytic reduction of 4-nitrophenol (4-NP) over nanoparticles in the presence of NaBH4 was carried out to assess the catalytic activity. In a typical experiment, 2 mL of deionized water, 1.7 mL of 0.2 mM 4-NP, and 1 mL of 15 mM NaBH4 solutions were mixed in a quartz cuvette followed by the addition of 1 mL of Au [emailprotected]2 NPs solution. The color of solution changed gradually from yellowish to clear as the reaction proceeded. UV-Vis spectra were recorded at a 5-minute intervals to monitor the progress of the reaction. 2.5. Ethanol electrocatalytic oxidation All electrochemical measurements were carried out in a conventional three-electrode cell at ambient temperature (~25ËÅ ¡C) using WPG 100e Potentiostat (WonAtech Inc.). The fabrication of working electrode is as follow: Prior to electrochemical experiments, glassy carbon (GC) electrode was sonicated in ethanol and deionized water successively. 10  µL of RLNP suspension was dropped onto carbon disk and the solution is dried at room temperature. Platinum and Ag/AgCl were employed as counter and reference electrodes, respectively. With an aqueous mixture of 0.5 M KOH and 1.0 M ethanol as electrolytes, at least 10 cycles of cyclic voltammetry were carried out before recyclable voltammograms were recorded. Throughout the cyclic voltammetry experiments, the potential window was between -0.2 V and 0.8 V. Prior to experiments, the electrolytes were degased by bubbling with nitrogen for 30 min. 2.6. Characterization The nanoparticles were imaged using a Hitachi S-4800 scanning electron microscope (SEM), and a JEOL JEM-2010 Luminography (Fuji FDL-5000) Ultramicrotome (CRX) transmission electron microscope (TEM). Samples were prepared for TEM by concentrating the nanoparticle mixture by centrifuging twice for 5 min at 13500 rpm with resuspension in 100 ÃŽ ¼L nanopure water and immobilizing 10 ÃŽ ¼L portions of the solution on Formvar-coated Cu grids. Extinction spectra were recorded with a UV-vis spectra spectrometer (UVIKON XS). Solution pH was measured using an Orion 420 A+ pH meter. 3. RESULTS AND DISCUSSION Initially, the highly monodisperse Au RLNPs with controlled diameters ranging from 60 to 70 nm (Fig. 1a and S1) [Images and size distribution of RLNP] were prepared according to protocols developed previously.ref Polyvinylpyrrolidone (PVP) was then employed as a primer and a direct growth of silica onto the PVP-capped Au RLNPs to obtain Au [emailprotected]2 NPs was carried out using solution-phase sol-gel method with TEOS as a precursor. PVP, which have been often used as a surface-stabilizing polymeric agent to prepare spherical Au core – SiO2 shell nanoparticles,ref was used to protect the high-energy surface of Au RLNPs. The scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images of Au [emailprotected]2 NPs (Fig. 1b-d) show the well-established core-shell structure in which the as-synthesized Au RLNPs were uniformly and individually encompassed within silica shells whereas still sustaining their rough and edge-rich surfaces advantageous to catal ytic performance. The average diameter of individual Au [emailprotected]2 NPs was xxxxx (xxx particles was evaluated, Fig 1e). With respect to RLNPs cores, the average size was nearly similar to that of RLNPs before silica-coated (Fig S1). The UV-Vis spectra plotted in Fig. 1f, a noticeable broadeness in the corresponding surface plasmon bands in Au [emailprotected]2 NPs compared to that of Au RLNP were observed. It is well know that the weaker and broader surface plasmons are observed,, due to the change of refractive index of surrounding environment after silica coating step[b1].ref [Fig 1] High catalytic efficiency of Au nanocatalysts were mainly due to their high roughness and plethora of edge-rich surfaces and corners.ref Thus it necessitates assessing whether catalytically active surfaces of the synthesized nanoparticles are stable in various environments. HCl, CTAB, and MPTS were introduced into the colloidal solution of the as-synthesized RLNPs in order to understand the stability of Au RLNPs in different ambiences. Fig. 2 shows typical SEM images displaying changes in geometries of Au RLNPs as adding diverse reagents. It is experimentally observed that Au RLNPs collectively changed to spherical nanoparticles with the smooth surface as adding HCl (Fig S2)ref corresponding to a blue-shift in UV-Vis spectrum toward approx. 520 nm which can be assigned to the surface plasmon resonance (SPR) of gold nanospheres. This phenomenon could be attributed to the oxidative etching effect which has been employed to control the size of other noble nanostructures in recent papers [12] [13] [14]. Meanwhile, as shown in Fig. 2a, much agglomeration occurred as adding CTAB. However, it is interesting to note that the aggregation also occurred without disturbing their raspberry-like motifs, as adding MPTS (Fig. 2b). The SPR changes shown in UV-Vis spectra (Fig. 2e) further confirmed this aggregation. The introduction of such reagents, which might affect the hydrodynamic layer thickness of Au RLNPs, accounts for this unusual alteration in particles size. The [emailprotected]2 NPs however exhibited no geometrical change when HCl was added. As shown in Fig. 3a, SEM images show that the [emailprotected]2 NPs still retained their original raspberry-like morphology without any observable agglomeration. This observation is also consistent with results obtained from UV-Vis spectra (Fig. 3b) that there was no detectable shift in SPR peak of the core-shell nanoparticles after HCl had been added. Ethanol comprises a lower toxicity, a higher theoretical energy density (8.01 kW.h kg-1) than methanol (6.09 kW.h kg-1) and formic acid (1.74 kW.h kg-1), and fewest environmental issues[15] [16]. Moreover, ethanol is a renewable source that can be easily produced massively from the chemical industry or fermentation of biomass. In this study, electrooxidation of ethanol [HM2]in KOH solution was performed to probe relative electrocatalytic activities of the synthesized nanoparticles. Fig. 4 shows the cyclic voltammograms of RLNPs, HCl-etched RLNPs[HM3], and [emailprotected]2 NPs for ethanol electrooxidation. It is clear that the RLNPs exhibit almost substantially higher electrocatalytic performance with a forward oxidation current (iF) value of 0.56 mA compared to that for HCl-etched RLNPs (iF, 0.07 mA). The high electrocatalytic activity of the RLNPs is attributed to the existence of high energetic surfaces in raspberry-like morphologies. However, [emailprotected]2 NPs did not show an y electrocatalytic activities over the entire potential window. This is explained that silica shells hindered the electron transfer between gold cores and electrode due to silica shells are insulating. The catalytic reduction of 4-NP to their corresponding derivatives, 4-aminophenol, in the presence of NaBH4 was chosen as a model reaction in order to evaluate the catalytic activity of Au [emailprotected]2 NPs. It is well established that the reduction of 4-NP by NaBH4 is thermodynamically feasible but kinetically restricted without a catalyst. The reduction progress was monitored by UV-Vis absorption spectra after the addition of catalysts. The characteristic absorption peak of 4-NP aqueous solution was located at 400 nm after NaBH4 had been added. First of all, in the absence of catalysts the reduction reaction of 4-NP did not proceed even with a large excess of NaBH4. However, when catalysts were introduced, the reduction of 4-NP was clearly observed. The absorbance of the reaction mixture at 400 nm gradually decreased as the reaction proceeded, along with the concomitant increase of 300 nm peak, corresponding to 4-aminophenol. Fig. 4 illustrates the UV-Vis spectra changes of 4-N P as a function of reaction time in the presence of Au RLNPs (Fig. 4a) and Au [emailprotected]2 NPs (Fig. 4c). Fig. 4e shows the change in concentration of 4-NP was plotted versus time, providing a general view to compare catalytic activities of Au RLNPs and Au [emailprotected] ­2 NPs (Ct: absorbance of 4-NP at specific reaction time, t; C0: initial absorbance of 4-NP as catalysis starts). The Ct/C0 is measured from the relative intensity of absorbance (At/A0). As can be seen, Au RLNPs exhibited comparatively higher catalytic activity than their core-shell counterparts, possibly owning to silica shell hindering the diffusion of reactants onto inner gold active sites. Interestingly, in the presence of HCl, the catalytic activity of Au [emailprotected]2 NPs however was not only improved, but also dramatically higher than that of Au RLNPs which was suffering from the morphological change, leading to severe degradation of active sites (Fig. 4e). In addition, we also investigated the d egree of reusability of the two catalysts. As shown in Fig. 5, the catalytic efficiencies of Au RLNPs decreased remarkably after reused 3 times whilst Au [emailprotected]2 still retained good catalytic performance for as far as 7 cycles. It is apparent that the stability and reusability of Au RLNPs were improved significantly after encapsulated into silica shell, resulting in maintenance in their catalytic activity. 4. CONCLUSIONS Acknowledgments: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2011-0008968). This research was also supported by Hallym University Research Fund 2012 (HRF-G-2012-3) References and Notes 1 [1] Linic, S.; Christopher, P.; Ingram, D. B. Nat. Mater. 2011, 10, 911. [2] Jiang, R.; Li, B.; Fang, C.; Wang, J. Adv. Mater. 2014, DOI: 10.1002/adma.201400203. [3] Zhang, Y.; Guo, Y.; Xianyu, Y.; Chen, W.; Zhao, Y.; Jiang, X. Adv. Mater. 2013, 15, 3802. [4] Tokel, O.; Inci, F.; Demirci, U. Chem. Rev. 2014, 114, 5728. [5] Tawfick, S.; Volder, M. D.; Copic, D.; Park, S. J.; Oliver, R.; Polsen, E. S.; Roberts, M. J.; Hart, A. J. Adv. Mater. 2012, 24, 1628. [6] Jones, M. R.; Osberg, K. D.; Macfarlane, R. J.; Langille, M. R.; Mirkin, C. A. Chem. Rev. 2011, 111, 3736. [7] Sau, T. K.; Rogach, A. L. Adv. Mater. 2010, 22, 1781. [8] Quan, Z.; Wang, Y.; Fang, J. Acc. Chem. Res. 2013, 46, 191. [9] Zhang, Y.; Xiao, Q.; Bao Y.; Zhang, Y.; Bottle, S.; Sarina, S.; Zhaorigetu, B.; Zhu, H. J. Phys. Chem. C 2014, 118, 19062. [10] Liu, X.; He, L.; Liu, Y.-M.; Cao, Y. Acc. Chem. Res. 2014, 47, 793. [11] Park, J.; Yoo, H. Microporous Mesoporous Mater. 2014, 185, 107. [12] Li, B.; Long, R., Zhong, X.; Bai, Y; Zhu, Z.; Zhang, X.; Zhi, M.; He, J.; Wang, C.; Li, Z.-Y.; Xiong, Y. Small 2012, 8, 1710. [13] Liu, M.; Zheng, Y.; Zhang, L.; Guo, L.; Xia, Y. J. Am. Chem. Soc. 2013, 135, 11752. [14] Chiu, C.-Y.; Yang, M.-Y.; Lin, F.-C.; Huang, J.-S.; Huang, M. H. Nanoscale 2014, 6, 7656. [15] Hong, W.; Wang, J.; Wang, E. ACS Appl. Mater. Interfaces 2014, 6, 9481. [16] Antolini, E.; Gonzalez, E. R. J. Power Sources 2010, 195, 3431. [b1]When gold NPs’ re encapsulated within silica, there’s generally red-shift in the absorbant peak of SPR. Please check this data once again. [HM2]In Fig. 4, I think it better to insert the 2 images of RLNP and Hcl-etched RLNPs to say that the latter surface is not as edge-rich as the former. [HM3]Considering how to name RLNPs whose morphology was change to sphere as adding HCl

Britney Spears Essay -- Biography

Modern society has made a sub-culture that lives in a reality that is not real. It is so far from the truth that the inhabitants of this sub-culture so often cannot live in both realities and have become a spectacle for others to marvel at. This sub-culture is made up of entertainers, millionaires, and athletes. The people in this group can range from newborns to death and some live on well after. The specimens that I find an interest in are the young ones that enter into this society not knowing well that their lives will never be the same. Britney Spears was just another victim of the society that brings into their prison. Britney Spears was born on December 2, 1981. She lived in Kentwood, Louisiana and was constantly performing in front of people and always wanted to be on 'Star Search'. Britney tried out for the New Mickey Mouse Club at age 8 and then again at 11 and made it. Then she went solo because her talent was evident and she wanted more (A & E Television Networks, 2011). Britney was very successful from 1998 to 2000. During these years, things were changing for her. Britney was telling people about her â€Å"remaining a virgin until marriage† yet she was posing in pictures that convinced people to think otherwise. Her albums still continued to sell in the United States as well as in Europe. She embarked on many successful roads through 2003 (Wikipedia, 2011). Her public finally saw her as a woman not a girl. In 2002, Britney and her boyfriend Justin Timberlake broke up. The following year during the 2003 MTV Video Music Awards, Britney and former fellow Mouseketeer Christina Alguilera kissed Madonna sensually (A&E Television Networks, 2011). Madonna has been a major influence in Britney's life. Ever since she was a... ...ality disorder is not extreme as it could be from the information that could be found. Because of this, there may be hope that she could live without medication and only therapy. This would be determined as she progresses. Having a stable support system may enable Britney to go back into the singing again but I would recommend that she only does this for small blocks of time. So many young people go into the entertainment business. Most of them do not know that without a support system to keep them grounded and stable their mental development can be compromised. The society that we place so high in our culture and deem worthy of such high praise, eat our children alive. They grow too fast, have to defend themselves constantly, and are watched around the clock. As a society, we must take a look at what we are doing to the people in the entertainment industry.