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sains experiment

Starting a WordPress Site - Miriam Posner

You have a couple options here. You can choose a site name that ends in "wordpress.com" for free, or, for $18 a year, you can purchase a site name that ends in ".com." Some people think that ".com" sounds more professional. It's up to you, and you can switch later. Starting a WordPress Site - 1 Should you upgrade? Upgrading comes with a number of benefits, as you can see. Perhaps most importantly, you get more storage space, no ads, and the ability to include video. But if you've never had a WordPress site before, it's probably best to experiment with the free version before you upgrade. For now, click Create Blog. Starting a WordPress Site - 2 Check your email and click on the link to register If you didn't get the email, try entering a different address on the signup page. Starting a WordPress Site - 3 Pick a theme A theme is like a template for your blog. It makes it easy to change everything about the way your blog looks without changing the content. Pick a theme now; you can always change it later. Uh ... where am I now? This is the page for your WordPress account. To get to your new site's dashboard, click on the My Blog tab and then Dashboard. Starting a WordPress Site - 4 Welcome to your dashboard! This is the behind-the-scenes control center for your blog. To see the front end of your blog, click on the blog name in the upper left-hand corner. Welcome to your new website! To get back to your dashboard, hover over your blog's name in the black menu bar, then click on Dashboard. Starting a WordPress Site - 5

2013 Trendy Promenade Hairstyles - PDF Archive

Formal event is all concerning class and glamour and correct hairstyle is initial condition of getting smashing look. once it involves promenade hairstyles the foremost necessary factor to be aforesaid is that formal hairstyle ought to be natural and age-appropriate. 2013 trendy promenade hairstyles represent wonderful formal designs that ar therefore cute and chic and dead appropriate for that day. Most of them ar easy-to-do and may be created while not having any special styling skills. Prom is that the initial necessary event in each girl’s life that’s why they pay such a lot attention on details. It’s knowing select dress and hairstyle long before the event in order that you may keep one’s eyes off from disasters. Formal hairstyle will be created on any hair length. If you have got short hair there’s no have to be compelled to lose heart. If you would like clip in human hair extensions to make refined up-do hairstyle, you’ll choose hair extensions so produce any desired vogue. On the opposite hand, you’ll vogue short hair in retro waves or in an exceedingly artistic flipped vogue which will look hot and nontraditional . The homeowners of long hair will experiment with a zillion designs from loose vintage waves to lovey up-dos or beautiful force up hairstyles. it’s merely not possible to count all the offered designs. One factor i need to mention is that your hairstyle ought to emphasize your individuality...

An Integrated Biochemistry and Genetics Outreach Program ...

ABSTRACT Exposure to genetic and biochemical experiments typically occurs late in one’s academic career. By the time students have the opportunity to select specialized courses in these areas, many have already developed negative attitudes toward the sciences. Given little or no direct experience with the fields of genetics and biochemistry, it is likely that many young people rule these out as potential areas of study or career path. To address this problem, we developed a 7-week (1 hr/week) hands-on course to introduce fifth grade students to basic concepts in genetics and biochemistry. These young students performed a series of investigations (ranging from examining phenotypic variation, in vitro enzymatic assays, and yeast genetic experiments) to explore scientific reasoning through direct experimentation. Despite the challenging material, the vast majority of students successfully completed each experiment, and most students reported that the experience increased their interest in science. Additionally, the experiments within the 7-week program are easily performed by instructors with basic skills in biological sciences. As such, this program can be implemented by others motivated to achieve a broader impact by increasing the accessibility of their university and communicating to a young audience a positive impression of the sciences and the potential for science as a career.

Tonsillar Crypts and Bacterial Invasion of Tonsils ... - Bentham Science

The association of lymphoid tissue with protective epithelium is widespread, eg skin, upper aerodigestive tract, gut, bronchi, urinary tract. The function of the palatine tonsils, an example of an organised mucosa-associated lymphoid tissue, is to sample the environmental antigen and participate with the initiation and maintenance of the local and systemic immunity. The epithelium lining the tonsillar crypts is a stratified squamous epithelium with patches of reticulated epithelium which is much thinner, with a discontinuous basal lamina, but has an unbroken oropharyngeal surface. The epithelium is exceedingly thin in places so that only a tenuous cytoplasmic layer separates the pharyngeal lumen from the underlying lymphocytes. Epithelial cells are held together by small desmosomes anchored into bundles of keratin filaments. Interdigitating dendritic cells are also present. The intimate association of epithelial cells and lymphocytes facilitates the direct transport of antigen from external environment to the tonsillar lymphoid cells [1]. The palatine tonsils themselves are frequently prone to infection as indicated by the frequency of tonsillectomy. Streptococcus is the commonest bacteria causing tonsillitis. Hokonohara et al. [2] in an animal experiment demonstrated the susceptibility of tonsils to infection on *Address correspondence to this author at the University Department of Otolaryngology, Southmead, Hospital, Westbury on Trym, Bristol, BS10 5 NB, UK; Tel: 01179 595158; Fax: 01179 595850; E-mail: malr@doctors.org.uk 1874-4281/10

New Jersey Postal History Society
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First Parachute Rocket Experiment Experimenter - Professor L. Russo 1936 (January 31) At 5 PM on this date, America's first parachute rocket experiment was conducted at Newark Meadows. The rocket travelling a little over 100 yards burst and released a parachute to which a mail container holding 980 miniature covers and an American flag was attached. A fierce gale which was blowing at the time carried the parachute and mail east of Newark Bay where it eventually landed. On being posted the entire mailing was held up by Postal Officials who objected to the miniature rocket stamp and private postmark. After holding them for an unknown period, they were eventually released; "The rocket covers which were mailed January 31 have finally been released by the P.O. The clain is made that they were held up because of unmailability. Just what constitutes an unmailable thing, only the P.O. knows. It's one of those things they call a violation - which in the eyes of the department is equivalent to murder, but to others it's just the whim of some old geezer with nothing else to do except to make rules First Rocket Airplane Flight 1936 (February 23) On this date for the first time inhistory a rocket Airplane was fired at Greenwood Lake, New York. After 6 months of preparation the date of the flight was fixed for February 9th. Due to foul play by one of the mechanics the rockets could not be made to go off and the firing had to be postponed for a fortnight. The first plane which carried one-third of the mail took a steep climb into the air, then side-slipped and came down on the frozen lake. Then with its own power it slid along the ice for several hundred yards and gathered momentum to take to the air again,

ECE 4670 Spring 2014 Lab 4 Radio Receivers for Analog and ...

This lab explores superheterodyne single and dual conversion receiver subsystems for analog and digital modulation. Two VHF (30–300 MHz) FM receivers are considered. The first receiver employes a wideband (about 200 kHz) IF subsystem centered at 10.7 MHz, while the second employes a narrowband (about 10 kHz) IF subsystem centered at 455 kHz. The narrowband FM receiver also utilizes dual conversion, with the first IF at 10.7 MHz and the second IF at 455 kHz. Both receivers have been constructed using readily available radio frequency integrated circuits (RFICs) from NXP semiconductor1 . The receivers are presently in prototype form, constructed on an RF breadboard. In the future the receivers will be fabricated using a custom PCB. The high sensitivity of these receivers allows the wideband receiver to easily tune in FM broadcast stations and the narrowband receiver to receive the Colorado Springs national weather service (NOAA) station, and lab broadcast frequency shift keyed (FSK) digital modulation. Wideband FM Receiver The block diagram for the wideband receiver is given in Figure 1. The low-noise amplifier (LNA) is not implemented at this time, nor is the front-end bandpass filter (BPF). A short wire (clip lead) will serve as the antenna in the experiment. The receiver requires and external local oscillator... LO frequency is 160 MHz. With low-side tuning for the LO, this means that carrier frequencies up 160 + 10.7 = 170.7 MHz can down-converted. The doubler is a passive circuit from Minicircuits2 , which in simple terms acts as a full-wave rectifier, which has a strong second harmonic component. The mixer output is processed with a multistage IF amplifier, with the 10.7 MHz IF passband shaping formed using ceramic filters. The nominal bandwidth of each filter is 280 kHz. Note from the schematic of Figure 2, the ceramic filters are external to the NXP SA636 RFIC. The final stage 10.7 MHz IF BPF SFE10.7 An RF receiver needs to have high gain in order process weak signals arriving from a transmitter located many miles away. High gain over a wide bandwidth is hard to manage from a stability standpoint. Sensitive radio receivers also need to be very selective, that is supply high gain over just a relatively narrow band of frequencies. For the case of an FM receiver the needed bandwidth...

Cavitation in Diesel Fuel Injector Nozzles

Improvements in the fuel injection systems of internal combustion engines can substantially reduce the emission of harmful pollutants. The fuel injection system produces the spray, which directly affects the combustion of the fuel, which in turn determines the production of pollutants. However, the details of this causal relationship remain unclear. The goal of this project is to understand the flow inside fuel injector nozzles and the implications for the downstream spray. The project began with a literature review which was helpful in identifying the relative importance of phenomena such as turbulence and cavitation. Preliminary simulations of steady, incompressible nozzle flow were run with a commercial computational fluid dynamics code. The results suggested that cavitation was likely occurring inside many fuel injector nozzles. Next, an experiment was performed to identify cavitation in working Diesel fuel injectors. The results of this investigation were consistent with the presence of cavitation in the injector nozzles. The project then turned towards understanding and more detailed modeling of cavitation in nozzles. An existing analytical cavitation model was validated and extended to provide analytical estimates of the nozzle exit flow profile. For additional insight into cavitating nozzle flow, a fully compressible, two-dimensional, computational model was developed. The model, known as Cavalry, assumed that the fluid is homogeneously mixed on the sub-grid scale and that the two phases are in homogenous equilibrium. The model was used to study cavitation in a variety of nozzle shapes. Cavalry was validated with experimental data for nozzle flow and exit velocity. The model was also used to study cavitation between the injector needle and seat. In order to study the effects of asymmetry, the computer model was used to simulate an asymmetric cavitating slot. The asymmetric calculations demonstrated strong, ...

centrifugal pump selection, sizing, and interpretation of performance

Pumps may be classified in two general types, dynamic and positive displacement. Positive displacement pumps are those in which energy is imparted to the liquid in a fixed displacement volume, such as a casing or a cylinder, by the rotary motion of gears, screws, or vanes, or by reciprocating pistons or plungers. Centrifugal pumps are dynamic pumps. Energy is imparted to the liquid by means of a disk with curved vanes rotating on a shaft called the impeller. The impeller imparts kinetic energy to the fluid by means of its shape and high rotational velocity. This energy is transformed to pressure energy when the fluid reaches the pump casing (see Figure 1-12). The pressure head difference between the inlet and the outlet, or Total Head produced by the pump, is proportional to the impeller speed and diameter. Therefore, to obtain a higher head, the rotational speed or the impeller diameter can be increased. To learn more about how a centrifugal pump increases a fluid's pressure, see reference 15. How a pump produces pressure is beyond the scope of this book, but an interesting experiment you can try at home will illustrate a similar process. A small plastic bottle is required to which a string is attached. Twist a rubber band around the bottle’s neck a few times and attach two 3-foot long strings, one on each side of the glass. Tie the other ends of the string together, fill the glass half full with water and hold it suspended from the strings. Start spinning. As you may have guessed, the fluid inside the glass will become pressurized. How do you know that the fluid is pressurized? To prove it to yourself, make a very small hole in the glass bottom. Make the hole just large enough for water to dribble through. Now spin the glass again. The water will spray out of the glass bottom no matter what its position, up or down. ...

Presentasi SBMPTN Info Day 2013.pdf

SBMPTN Info Day 2013 Acara Sosialisasi Seleksi Bersama Masuk Perguruan Tinggi Negeri Tahun 2013 Dr. Emil Budianto Ketua Pantia Lokal SBMPTN Jakarta SELEKSI MAHASISWA MASUK PTN PRESTASI AKADEMIK SNMPTN KEBIJAKAN PENERIMAAN MAHASISWA PTN UJIAN TERTULIS SBMPTN Pola seleksi yang dilaksanakan secara bersama oleh PTN di seluruh Indonesia yang diselenggarakan melalui ujian tulis KARAKTERISTIK TES TERTULIS 1 2 • mengukur kemampuan penalaran atau kemampuan berpikir tingkat tinggi (higher order thinking) yang memprediksi keberhasilan calon mahasiswa di semua program studi di Perguruan Tinggi. • terdiri dari Tes Potensi Akademik (TPA), Tes Kemampuan Dasar Umum (TKDU), Tes Kemampuan Dasar Sains dan Teknologi (TKD Saintek), dan Tes Kemampuan Dasar Sosial dan Humaniora (TKD Soshum). Perbedaan SNMPTN 2012 dengan SBMPTN 2013

PhD Sample Resume - University of Delaware

Name Address Phone Email RESEARCH INTERESTS Distribute Systems Control Robust Decentralization Control Mechantronics and Artificial Intelligence Optimization and Robust Control Robotics and Control Precision Engineering Intelligent Control Metrology Automation Applied Nonlinear Control System Identification Vibration Analysis and Control TEACHING INTERESTS Kinematics and Dynamics Feedback Control Mechatronics Nonlinear Control Introduction to Robotics Vibration Analysis and Control Optimization and System Identification Robust Control EDUCATION Ph.D. in Mechanical Engineering, University of Delaware, 2003 Dissertation Title: Modeling and Control of a Flexible Cable System Overall GPA: 3.43/4.0. Major GPA: 3.52 M.S. in Precision Instrument Engineering, Tianjin University, 2000 Thesis Title: A Novel Design of Highway Retroreflector Measurement Devise. Overall GPA: 82.35/100. Major GPA: 87.1/100 B.S. in Precision Instrument Engineering, Tianjin University, 1994 Thesis Title: Research on the Microcomputer Controlled Pressure Measuring System. B.A. minor in Humanities and Social Sciences, Tianjin University, 1994 Thesis Title: The Position of Futurology in the History of Western Philosophy. RESEARCH EXPERIENCE Research Assistant, University of Delaware, 2002-2003 • Developed the model for compliant cable systems with varying cable lengths. • Designed a Lyapunov controller to suppress the vibration of cables. The controller guaranteed the stability of the system and assured the goal of the slider. • Designed a robust controller on the experimentally identified model using H control and LQG/miniMax methodology. • Conducted experiments on flexible six order-of-freedom cable suspended robots using dSPACE 1103 systems with real-time workshop, where the differential flatness theory was applied to calculate the positive tension inputs. • Designed an EKG measurement device for laboratory instruments class. Intern Researcher, Australia Defense Force Academy, 2002 • Designed and successfully implemented robust controller for a flexible cable transporter system, and dramatically reduced the residual vibration. • Derived the model of flexible cable systems using subspace identification t theory. NAME Page 2 of 6 Research Assistant, Tianjin University 1997-2000 • Designed an automatic retroreflector measuring device including mechanical design, electrical circuit design, and optical system for highway applications. • Directed two undergraduate students’ research and supervised their thesis. • Composed the funding proposals which amounted to $50,000. • Taught undergraduate class, supervised experiments and graded assignments. TEACHING EXPERIENCE Graduate Assistant, Mechanical Engineering, University of Delaware, 2001-2001. • Maintained the homepage for the department, using HTML/mSQL languages. • Led group discussions, prepared the experiment instrumentation, graded their assignments, and video recording presentations for the senior design 2000 class. Assistant Lecturer for introductory electronics experiment, Tianjin University • Preparation of the experimental procedure, setup of the experimental apparatus, providing the introduction of the experiment, responding to their questions they encountered in the experiment, and grading their reports. • Students rated my lecture 4.5 out of 5 point scale. INDUSTRIAL EXPERIENCE Intern Software Engineer, Zhongxing Communication Inc, Shanghai, 2000. • Developed one module of switchboard software for fee-charging purpose. Project Leader, Daewoo Company, Seoul, 1996-1997. • Directed and administrated the training process of a fifteen-member group. • Exhibited leadership while enhancing teamwork to achieve stated goals. Mechanical Design Engineer, Qingdao Brown-Sharpe Inc., 1994-1996. • Conceptualized and designed prototype of Coordinate Measuring Machine. • Conducted FEM/FEA of the frame and the outer cover of the CMMs. • Enhanced the frame rigidity and the measurement accuracy dramatically by proposing novel ideas and improving previous design. COMPUTER SKILLS Operating Systems: Computer Languages: Scientific Applications: Technical Drawing: Office Applications: Internet Development: Database: ...

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