58 research outputs found
Pengaruh Bentonit Terhadap Gasifikasi Updraft Sekam Padi Pada Temperatur 550°C, 650°C Dan 750°C
No full textSemakin pesat laju perkembangan ilmu pengetahuan dan teknologi menyebabkan
kebutuhan energi fosil juga semakin meningkat drastis seperti minyak bumi, gas alam dan
juga batu bara. Hal ini disebabkan oleh kebutuhan di sektor industri, transportasi dan rumah
tangga semakin meningkat. Sehingga dibutuhkan salah satu metode untuk meningkatkan
kualitas bahan bakar adalah melalui proses gasifikasi.
Gasifikasi dalam hal ini adalah mengkonversikan bahan bakar padat atau cair menjadi
syngas secara termokimia menggunakan teknologi potensial untuk pemanfaatan biomassa
melalui proses teknologi gasifier yang menghasilkan gas yang bisa dibakar, seperti CH4, H2,
CO dan juga senyawa yang sifatnya tidak murni/impuritas seperti H2S, CO2, dan TAR.
Bahan bakar yang digunakan pada proses gasifikasi ini adalah limbah biomassa sekam padi,
yang merupakan senyawa hidrokarbon yang bisa dikonversi menjadi energi pada proses
thermal.
Pada proses gasifikasi ini digunakan katalis berupa bentonit bertujuan untuk
mempercepat laju pemanasan dan memberikan efek asam bronsted-lowry dalam pemutusan
rantai hidrokarbon .Proses gasifikasi ini dilakukan dengan penambahan katalis bentonite dan
tanpa katalis bentonit dengan dengan kandungan 0-200 gram dari berat sekam padi yaitu 200
gram pada variasi temperatur 550°C, 650°C, dan 750°C yang dilakukan selama 2 jam.
Tujuan penelitian ini adalah untuk mengidentifikasi hasil gasifikasi updraft sekam padi
dengan menggunakan bentonit dan tanpa menggunakan bentonit.
Berdasarkan penelitian yang dilakukan hasil laju pemanasan, volume , massa, dan
komposisi pada gasifikasi dengan menggunakan bentonit lebih baik daripada tanpa
menggunakan bentonit . Dengan menggunakan bentonit pada temperatur didapatkan syngas
H2 meningkat dan CO2 Selain itu semakin tinggi temperatur maka proses thermal cracking
semakin maksimum dan menghasilkan volume serta komposisi gas lebih baik daripada suhu
rendah
IT based social media impacts on Indonesian general legislative elections 2014
No full textThe information technology’s applications in cyberspace (the internet) are currently dominated by social media. The author investigates and explores the advantages of social media implementation of any political party in Indonesian general legislative elections 2014. There are twelve national political parties participating in the election as contestants plus three local political parties in Aceh. In this researh, auhtor focus on national politial parties only. The author visited, analyzed, and learnt the social media used by the contestants. Those social media are : 1) Facebook, 2) Twitter, and 3) YouTube. Author also compares the popularity of political parties on social media with the results of a real count. Then Author can discuss : 1) the impact of social media on political parties, 2) social media as a brand of political parties, 3) social media as political presentation, and 4) social media as virtual society. The results of this study indicate that Facebook is still a social media application that received high attention by the voters on a campaign of political parties. Indonesian's legislative elections won by parties that are using social media as part of their campaigns
STUDENTS LEARNING CENTER STRATEGY BASED ON E-LEARNING AND BLOGS
No full textEducation is the main infrastructure for promoting a nation and increasing their competitiveness in globalization era that involves the use of information technology (IT). This paper has goal to expand the alternative for learning strategy based on IT for final year students that will conduct a research for their final report. The final year students are expected have the ability to learn independently to manage the needness of their learning supply. In this paper, the author will discuss how to use the e-learning media and blogs to manage the independently learning environment or self-learning. E-learning offers the flexibilities in term of time and place in supporting the learning activities as well as a media for faculty/lecturer to disseminate learning materials. While the blog has been a free medium for the publication of variety contents, including academic contents. In this papaer, author suggests some the institutions regulations, lecturers roles, and students participations are involve in set the learning environment based on e-learning and blog. These activities able to support students in learning independently or self-learning
Valutazione ecocardiografica-doppler della performance del cuore destro in pazienti sottoposti ad intervento di resezione polmonare maggiore
No full textRework plans for downtown race
No full textauthor discusses how the Honda Grand Prix needs to be reorganized for the sake of the businesses affected by it. The Dali Museum did not do well in visitor attendance while the race was going on, and in the time leading up to the race, the setup for visitors was complicated to get around. Museum leaders will be meeting with city officials to see what can be done, and the author requests a call to action for race organizer Andretti green to do something about it
The Courier, Volume 3, Issue 21, April 2, 1970
No full textStories:
Student Senate Throws Out Administration’s Publicity Code
Expanding DuPage Eyes ‘Cluster’ College Concept
Senators Press College Brass for Details on Code
Text of Controversial Publicity Code
Student Activities Budget Up $53,000 Over Last Year
Proposed Detailed Budget
President’s List Announced for Outstanding Scholarship Here
Wash & Wear: He Won’t Know It’s There (Wigs)
Civil Rights Slides Move C of D Students
Andretti Wins Sebring in Borrowed Ferrari in Last-Minute Finish
National Meet at C of D
People:
Dr. Rene Dubo
Spinal deformity index in patients with type 2 diabetes.
No full textThe objective of this study is to investigate bone metabolism, density, and quality in patients with diabetes type 2 using DEXA and spinal deformity index (SDI), a surrogate index of bone quality. Fifty-six patients with type 2 diabetes were studied; exclusion criteria were diseases and medications that affect bone and mineral metabolism. Mean age was 65 ± 7 years. Mean diabetes duration was 10 ± 7 years and mean HbA1C was 6.6 ± 0.5 %. BMI was 30 ± 4. Fifty-six sex, age, and BMI matched served as controls. All subjects underwent a clinical and biochemical examination. Spinal and femoral neck BMD were measured by DEXA, and a spine radiography was performed to assess vertebral fractures and to calculate SDI. Mean serum 25-OH vitamin D levels were 19.6 ± 3.7 ng/ml in patients and 30 ± 14 ng/ml in controls (p < 0.01). PTH serum levels were 47.9 ± 40 pg/ml in patients versus 37 ± 5.3 pg/ml in controls (p < 0.01). At lumbar spine there was a significant difference between patients and controls only for T-score (p = <0.01), while at femoral neck there was a difference in BMD (p < 0.01) and in T-score (p < 0.01). Radiological vertebral fractures were found in 46 % of patients and 17 % of controls (p < 0.05). SDI was higher in patients than in controls (p < 0.05). The percentage of fractures with T-score BMD greater than -2.5 was 69 % in patients and 10 % in controls (p < 0.05). As a conclusion, BMD was similar in patients and in controls, while SDI value was higher in patients; therefore, SDI was more specific than BMD for the diagnosis of osteoporosis due to metabolic diseases
Demand-side nutritional inequality? how poverty and wealth shape healthy eating
No full textConsumidores de baixo status socioeconômico em todo o mundo exibem dietas menos saudáveis do que consumidores de alto status. Essa desigualdade nutricional é frequentemente atribuída a fatores da oferta, como preços mais altos e menor disponibilidade de alimentos saudáveis em bairros menos afluentes. A pesquisa atual avalia se esse fenômeno global também pode ser explicado por diferenças nas preferências alimentares entre indivíduos de distinto status socioeconômico – uma explicação do lado da demanda. Em uma série de cinco estudos pré-registrados em um ambiente altamente desigual (Rio de Janeiro, Brasil), investigamos se consumidores de baixo (vs. alto) status socioeconômico (a) variam em preferências alimentares além das considerações do lado da oferta, (b) atribuem pesos diferentes aos atributos
intrínsecos dos alimentos (saciedade, saudabilidade e sabor) e (c) percebem a associação entre
esses atributos de forma diferente. Os resultados mostram que, em comparação com consumidores de alto status socioeconômico, consumidores de baixo status socioeconômico são mais propensos a escolher itens não saudáveis, mesmo quando os fatores do lado da oferta são controlados por design; são muito mais propensos a priorizar a saciedade em detrimento da saudabilidade e tendem a perceber os itens saudáveis como menos saciáveis e saborosos. Com base nesses achados, o estudo final mostra que é possível aumentar as escolhas alimentares saudáveis entre a população de baixo status socioeconômico, aumentando a
percepção de saciedade das opções saudáveis disponíveis.Low-SES consumers around the world display unhealthier diets than high-SES consumers. This nutritional inequality is often attributed to supply-side factors such as the higher prices and the lower availability of healthy foods in deprived neighborhoods. The current research assesses whether this global phenomenon can also be explained by differences in food preferences across the socioeconomic spectrum—a demand-side account. A series of five pre- registered studies in a highly unequal environment (Rio de Janeiro, Brazil) investigates whether low- (vs. high-) SES consumers (a) vary in food choices over and above supply-side considerations, (b) give different weights to critical food attributes (fillingness, healthiness and taste) and (c) perceive the association among these attributes differently. The results show that low (vs. high)-SES consumers are more likely to choose unhealthy items even when supply- side factors are controlled by design, are much more likely to prioritize fillingness at the expense of healthiness, and tend to see healthy items as less filling and tasty. Based on these findings, a final policy-related study shows that it is possible to increase healthy food choices among low-SES consumers by increasing the fillingness of the healthy options available
Exploring Student’s Blended Learning through Social Media
No full textInformation technology (IT) has been used widely in many aspects of our daily life. Social media as a leading application on the internet has changed many aspects of life become more globalized. This article discussed the use of social media to support learning activities for students in the faculty of computer science. The author used Facebook and WordPress as an alternative to electronic learning, those were: 1) online attendance tool, 2) media storage and dissemination of course materials, 3) and event scheduling for the lectures. Social media succeed to change the way of modern learning styles and environment. The results of this study are some learning activities such as (1) Preparation, (2) Weekly meeting activities, (3) Course Page, (4) Social Media as Online Attendance Tool, (5) Social Media as Learning Repository and Dissemination, and (6) Social Media as Online Event Scheduling. Change conventional learning model becomes visual and distanceless
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