http://www.linkedin.com/pub/fan-wu/2a/a4b/41b Fan Wu Recent Engineering Graduate Available for Immediate Hire. 713/922-0752 or fwu8@uh.edu Location Houston, Texas Area Industry Mechanical or Industrial Engineering Join LinkedIn and access Fan Wu’s full profile. As a LinkedIn member, you'll join 150 million other professionals who are sharing connections, ideas, and opportunities. And it's free! You'll also be able to: See who you and Fan Wu know in common Get introduced to Fan Wu Contact Fan Wu directly View Full Profile Fan Wu's Overview Past Research Assistant at Multiscale Modeling and Simulation Lab Research Assistant at Functional Composite and Electronic Information Material Lab Intern at National Clean Energy Lab Education University of Houston Shanghai University Connections 20 connections Fan Wu's Summary • Extensive understanding of properties and behavior of different classes of materials, highly related to the materials, tools and technologies in the exploration, production, transportation, storage, refining, conversion and upgrading of oil and gas, including metal, wrap, pipelines, drilling bits, coatings, polymer, composite. • Excellent adaptability, learning ability, innovative and cooperative spirit. Trusted by all levels of internal and external colleagues in all projects. • Skilled in determining ways to design, strengthen or combine materials, or adopt new materials with new or specific properties for use in energy industry with professional experience in design, development and manufacture of advanced and novel materials and products. • Sound background in creating structure and property optimization solutions utilizing both experimental and computational methods, with fabrication and physical testing instruments as well as 3D simulation software. • Proficiency in performing high quality data collection and analysis crucial for risk management, meeting industry needs and successful completion of projects. Fan Wu's Experience Research Assistant Multiscale Modeling and Simulation Lab August 2009 – May 2012 (2 years 10 months) Houston, Texas Area • Created a ReaxFF for HfB2 used in computational methods (Atomistic Modeling or FEA with Ansys, Abaqus, et al) for the first time worldwide, a crucial role in studying and enhancing HfB2’s chemical and mechanical behaviors such as hardness, fracture toughness, strength and interactions with different additives or external agents in a more accurate and less expensive way. • Simulated 3D structure and calculated properties for the mathematical model of HfB2 potential by QuantumWise, Molecular Dynamic codes and Matlab. Obtained high reliable result. Project: A reactive force field (ReaxFF) for Zirconium and Hafnium Di-Boride(ZrB2 and HfB2) for applications in high temperature/pressure/stress and corrosive working environment. Research Assistant Functional Composite and Electronic Information Material Lab September 2007 – August 2008 (1 year) • Investigated the elements in manufacture process that influence BF product quality, including thermal treatment procedure, polyvinyl alcohol (PVA) polymer and glacial acetic acid concentration, based on the data and figures from XRD, Fourier Transform Infrared Meter (FTIM) and SEM testing. Thesis with honor. • Fabricated thin films growing on single-crystal silver substrate in clean room for thickness dependence analysis and metal oxide doped ceramics for structure and electrical properties testing. Provided experiment data to speed up product optimization process. Project: Wet chemical synthesis of mutiferroic Bismuth ferric (BF) nano-crystal for sensor device application. Project: PbTiO3-BiFeO3 (PT-BF) muti-layer composite thin films fabricated by Sol-gel technology. Project: Development and modification of Potassium Sodium Niobate (NaNbO3-KNbO3) based Lead-free environmental friendly piezoelectric ceramics. Intern National Clean Energy Lab July 2007 – September 2007 (3 months) • Led the design of Orthogonal tests for controlling secondary reactions, and performed statistic calculation. Established optimized solution to improve efficiency of water gas shift catalysts. • Monitored Water Gas Shift Reaction apparatus and Gas Chromatograph instrument. Actually recorded and stored data into Excel and database. Contributed to a co-authored paper. Project: Development of inorganic water gas shift catalysts. Fan Wu's Languages English (Full professional proficiency) Chinese (Native or bilingual proficiency) Fan Wu's Skills Expertise Finite Element Analysis Modeling Engineering Materials Energy Simulations Mechanical Engineering Composite Data Analysis Laboratory or Field Experiments Fan Wu's Education University of Houston Master of Science , Mechanical Engineering 2009 – 2012 Shanghai University Bachelor of Engineering , Materials Science and Engineering 2004 – 2008 Fan Wu's Additional Information Groups and Associations: ARCHITECT ASME (American Society of Mechanical Engineers) Construction Management Construction Professionals Forum Cougar Business Alliance Design and Construction Network Financial Engineering Group Harvard Business Review - Reader's Forum Jobs in Oil Gas Linking CONSTRUCTION Materials Science Engineer Nanotechnologists OIL, GAS and ENERGY WORKERS WORLD WIDE Offshore Construction Oil Gas Jobs Oil and Gas People - Jobs Network Oil, Gas Energy Jobs Society for Biomaterials Sol-Gel Science and Technology The Project Manager Network - #1 Group for Project Managers The University of Houston Alumni Association UH - University of Houston University Career Advisory Network (UCAN) at University of Houston University Career Services at University of Houston University of Houston Alumni University of Houston Cullen College of Engineering University of Houston, Mechanical Engineering
最新消息：美国生物安全专家小组经过审查后，正着手撤销对两项有争议禽流感研究公开发表的反对意见。但最终结局还要取决于美国政府。 Bird flu study publication cleared by U.S. biosecurity panel The Canadian Press Posted: Mar 30, 2012 5:26 PM ET Last Updated: Mar 30, 2012 5:15 PM ET A panel of U.S. biosecurity experts is withdrawing its objections to the publication of two controversial bird flu studies. A colourized transmission electron micrograph shows avian influenza A H5N1 viruses (seen in gold) grown in MDCK cells (seen in green. (Cynthia Goldsmith, Jackie Katz, Sharif Zaki/CDC/Canadian Press) The National Science Advisory Board for Biosecurity says after reviewing revised versions of the studies it is recommending they can be published in full. The board's recommendation must go to the U.S. government, which will then decide whether to accept or reject it. If the U.S. government withdraws its objections, the move will draw to a close a controversy that has dragged on since late last fall. The board voted unanimously to clear for publication a study by Yoshihiro Kawaoka of the University of Wisconsin-Madison. The committee voted 12-6 on the second study, done by Dutch virologist Ron Fouchier. Fouchier told The Canadian Press he is relieved by the outcome. http://www.cbc.ca/news/technology/story/2012/03/30/bird-flu-studies-publication.html
http://blog.appliedmaterials.com/making-chip-one-atom-time 视频链接： http://blog.appliedmaterials.com/applied-explains-nanoscale-transistor-engineering http://www.technologyreview.com/energy/38031/ Chip stack: This illustration shows the layers that make up a gate in a 22-nanometer transistor. The white balls on the bottom are silicon . The light blue balls in the middle are silicon dioxide molecules; the larger turquoise balls higher up are hafnium oxide ; and the yellow balls are nitrogen atoms. Applied Materials Energy Tomorrow's Transistor, Built Atom by Atom A more precise manufacturing method will help as electronics shrink ever smaller. Thursday, July 14, 2011 By Katherine Bourzac !-- /div-- Applied Materials , the world's leading supplier of manufacturing equipment to chipmakers, has announced a new system for making one of the most critical layers of the transistors found in logic circuits. Applied Materials' new tool, announced at the Semicon West conference in San Francisco on Tuesday, deposits a critical layer in transistors one atom at a time, providing unprecedented precision. As chipmakers scale transistors down to ever-smaller sizes, enabling speedier and more power-efficient electronics, atomic-scale manufacturing precision is a growing concern. The first chips with transistors just 22 nanometers in size are going into production this year, and at that size, even the tiniest inconsistencies can mean that a chip intended to sell at a premium must instead be used for low-end gadgetry. Transistors are made up of multiple layers: an active silicon material topped with an interfacing layer and then a layer of a material called a dielectric, which makes up the "gate" that switches the transistor on and off. Applied Materials sells equipment for depositing these layers, called the gate stack, on top of silicon wafers. In the switch from today's 32-nanometer to the next generation of 22-nanometer transistors , it's become trickier to make the gate. The interface and dielectric layers both have to get thinner, and the behavior of the layers can be affected by tiny flaws where the materials touch. And as the layers get thinner, tiny flaws can be magnified even more than in larger transistors made from thicker layers. Manufacturing accuracy will be even more important in the next-generation three-dimensional transistors that chipmaker Intel will begin producing later this year. In these devices, the active area is a raised strip that the interface and gate layers contact on three sides. This increased area of contact helps these devices perform better, but it also means an increased vulnerability to flaws. The process uses atomic-layer deposition, or ALD, which lays down a single atomic layer of the dielectric at a time. This method is more expensive, but it's become necessary, says Atif Noori, global product manager of Applied Materials' ALD division. For the heart of the transistor—the gate—to work, "you have to make sure you're putting all the atoms right where you want them." One source of inconsistencies in microchips is exposure to air. In Applied Materials' new tool, the entire process of depositing the gate stack is done in a vacuum, one wafer at a time. Making the gate stack entirely under a vacuum also leads to a 5 to 10 percent increase in the speed at which electrons travel through the transistor; this can translate into power savings or faster processing. Ordinarily, there's significant variation in the amount of power it takes to turn on a given transistor on a chip; manufacturing under a vacuum tightens that distribution by 20 to 40 percent.
Well, try this trick, and let me know if it does not work. Just before you take the photo, tell everyone: "Now, close your eyes. Three, two, one, ...OPEN your eyes!" You WAIT for one more count, and take the photo. Good luck!
I often bring a book or two for long flights. So, I picked up two books at Costco yesterday, "The help," and "The digital photography (Book 1)" by Scott Kelby. Many of my friends love photography, and have invested in decent equipments. I have not, because I have less spare money and lesser spare time. But, I love to take good pictures, even with my simple point-and-shot dCamera. So, how can you take "tack sharp" photos as a pro? (Honest, most photos I saw at the SciNet are NOT "tack sharp" at all.) Here are some tips from a pro on getting tack sharp photos: 1) A decent tripod (cost range: $100-$750) 2) A ballhead ($110-$455) 3) A cable release (forget to bring one? Use a self timer!) 4) Lock the mirror (if you can) 5) Turn OFF vibration reduction (or IS) 6) Shoot at your lens’ sharpest aperture 7) Good lens pay 8) Avoid increasing ISO, even in dim light 9) Zoom in to check sharpness (before you walk away) 10) Sharpening afterward (yes, even pros do that) Ok, all that from Chapter One. Stay tuned.
If you think you saw him on Aug. 12, 2011 at the Sea-Tac Airport, you are right! The photo was taken on Aug. 12, 2011 at the Sea-Tac Airport, and the story is a good one. http://news.yahoo.com/photo-bag-carrying-ambassador-charms-china-184349082.html
Methane and Frozen Ground Figure 1. Kevin Schaefer is an NSIDC scientist who studies the carbon cycle. —Credit: NSIDC Kevin Schaefer is a permafrost scientist at NSIDC. He studies the carbon cycle, or the processes by which the Earth's carbon moves around: from the air into plants, from plants into the ground, and then back into the air (Figure 2). Dr. Schaefer studies the carbon that is frozen deep in Arctic permafrost. As the Earth warms, scientists worry that some of the carbon in permafrost could escape to the atmosphere as carbon dioxide or methane. Increasing the amount of these gases in the atmosphere could make Earth's climate warm up even more. See Climate and Frozen Ground for more information on greenhouse gases and climate warming. Here Dr. Schaefer provides some answers to questions about methane and frozen ground. What is methane? Methane is a gas made up of one carbon atom and four hydrogen atoms. It's the same natural gas that some people use to heat their homes, and it also exists naturally in the atmosphere. Scientists worry that if methane increases in the atmosphere, it could cause even more warming than carbon dioxide from the burning of fossil fuels. Although there is much less methane in the atmosphere than carbon dioxide, it traps heat about twenty times as efficiently as carbon dioxide. What are the sources of methane in the Arctic? There are two potential sources of methane in the Arctic. The first source of methane is called methyl clathrate. Methyl clathrates are molecules of methane that are frozen into ice crystals. They can form deep in the Earth or underwater, but it takes very special conditions, with high pressure and low temperature, to make them. If the temperature or pressure changes, the ice that imprisons the methane will break apart, and the methane will escape. We're not sure how much methane is trapped in methyl clathrates, or how much is in danger of escaping. The other major source of methane in the Arctic is the organic matter frozen in permafrost. This is the source of methane that I study. The organic matter in permafrost contains a lot of carbon. It is made of dead plants and animals that have been frozen deep in permafrost for thousands of years. As long as this organic matter remains frozen, it will stay in the permafrost. However, if it thaws, it will decay, releasing carbon dioxide or methane into the atmosphere. This is why permafrost carbon is important to climate study. Figure 2. Carbon moves through the Earth's atmosphere, oceans, and land in a process called the carbon cycle. —Credit: NSIDC, modified from NASA Earth Science Enterprise How did this carbon get into permafrost in the first place? Carbon was buried in permafrost by processes that took thousands of years. During the last ice age, great ice sheets covered most of the continents. As they spread out and then shrunk back, the heavy fields of ice ground up the rock underneath them into a very fine dust called loess or glacial flour. The ice sheets produced a huge amount of this powdered rock, and wind and rain deposited it onto the soil. As the ice sheets added loess to the soil, the soil got thicker. As the soil built up, the active layer on top stayed the same thickness. The active layer freezes and thaws each year, and plants can grow in it. But underneath the active layer, roots and other organic matter were frozen into the permafrost, where they can't decay. Most of the organic matter consists of partially decayed roots, whole roots, and other plant material. However, there are also animals and animal material frozen in the ground--sometimes people find entire mastodons or other animals frozen in the permafrost (Figure 3). Significant deposits of carbon-rich permafrost, or yedoma , have been found in Russia. How much carbon is stored in frozen ground? There is a huge amount of carbon stored in permafrost. Right now, the Earth's atmosphere contains about 850 gigatons of carbon. (A gigaton is one million tons—about the weight of one hundred thousand school buses). We estimate that there are about 1,400 gigatons of carbon frozen in permafrost. So the carbon frozen in permafrost is greater than the amount of carbon that is already in the atmosphere today. That doesn't mean that all of the carbon will decay and end up in the atmosphere. The trick is to find out how much of the frozen carbon is going to decay, how fast, and where. What will happen to the frozen carbon if permafrost thaws? When permafrost thaws, the frozen organic matter inside it will thaw out, too, and begin to decay. It's like taking a bag of frozen broccoli out of the freezer and putting it into the refrigerator. Once it thaws, it will eventually decay and break down. Figure 3. This steppe bison lay frozen in permafrost for 36,000 years before its discovery in 1979. The bison, known as "Babe," is on display at the University of Alaska, Fairbanks Museum of the North. —Credit: Photo by Bill Schmoker (PolarTREC 2010), Courtesy of ARCUS As organic matter decays, it gets eaten up and digested by microbes. The bacteria that eat it produce either carbon dioxide or methane as waste. If there is oxygen available, the microbes make carbon dioxide. But if there is no oxygen available, they make methane. Most of the places where methane would form are the swamps and wetlands. And there are many miles of wetlands in the Arctic. When you walk around in the Arctic tundra, it's like sloshing through a giant sponge. When permafrost carbon turns into methane, it bubbles up through soil and water. On the way, other microorganisms eat some of it. But some methane makes it to the surface and escapes into the air. How will additional methane from permafrost affect global warming? There are several opposing processes at work, which make this a hard question to answer. Warmer temperatures mean that permafrost can thaw and release methane to the atmosphere. But warming also means that the growing seasons in Arctic latitudes will last longer. When the growing season is longer, plants have more time to suck up carbon from the atmosphere. Since carbon in the air is what plants use to grow, it can also act as a sort of fertilizer under certain conditions. Then plants to grow faster and take up even more carbon. Right now, the Arctic takes up more carbon than it releases. This means that plants take up carbon during the growing season, but do not release as much carbon through decay. So we say that the Arctic acts as a carbon sink. But if the Earth continues to warm, and a lot of permafrost thaws out, the Arctic could become an overall source of carbon to the atmosphere, instead of a sink. This is what scientists refer to as a "tipping point." We say that something has reached a tipping point when it switches from a relatively stable state to an unstoppable cycle. In this case, the Arctic would change from a carbon sink to a carbon source. If the Arctic permafrost releases more carbon than it absorbs, it would start a cycle where the extra carbon in the atmosphere leads to increased warming. The increased warming means more permafrost thawing and methane release. What are the questions that scientists are currently studying about permafrost and methane? The big questions are: How much carbon is currently frozen in permafrost? How much will thaw out in the future and when will it be released into the atmosphere? We also want to know how much carbon could be released as methane, and how much could be released as carbon dioxide. That's related to how much of the land is wetlands, since ponds and lakes and swamps are the main places that will produce methane. If governments around the world knew how much methane could be released from permafrost, it could help them decide what to do about it. For example, they would know how much we need to reduce fossil fuel emissions from human activities. They would also need to know how much carbon the Earth is emitting on its own. The good news is that we haven't reached the tipping point yet. People in some areas have reported that some permafrost carbon has already started to decay. But measurements of carbon dioxide in the air show the Arctic is still a carbon sink. So we are studying permafrost to understand more about how it acts. We are also trying to measure how much carbon there is and where is it located. Then scientists can use that information in computer programs that help us better plan for the future. http://nsidc.org/frozenground/methane.html
2011-01-24 Last month before Christmas I was in Hawaii', attending the PacificChem conference. The Environmental Chemistry of Aerosol Symposium had attracted quite a group of active researchers in the field. It was very worthy attending. Plus XH and I had an opportunity to meet and chat. Compared with Hong Kong, the most outstanding feature of Hawaii' is its clear blue sky and below is a photo to show.
This pdf file is made from a ppt show, 45 Lessons in Life, by He Yan thatwill bring you love and peace (with music) when it's cold or when you are down Please watch it when you get a chance. Life is beautiful! ps. If youreally wantto watch a ppt version, please send me a short message with your email address. It's more than 5M, too big for uploading to the Net. Updates: I was told that some of the photos are done through Infrared_photography . Something to learn every day!
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