Professor aims to build homes on the moon

first_imgBehrokh Khoshnevis, a professor of industrial and systems engineering and civil and environmental engineering at the Viterbi School of Engineering, has recently developed Contour Crafting, a technology to build structures with much thicker layers than the usual type of 3-D printing.The technology, which Khoshnevis has devoted 15 years to creating, could make building houses utilizing 3-D printers a possibility.“It is a hundred times faster and it gets smooth surfaces,” Khoshnevis said, holding up one of his models.The robotic construction system has completed the printing of 6-foot-tall sections of homes in Khoshnevis’ lab.The invention has already received a favorable reception from NASA. Khoshnevis has received a grant from the organization to begin applying his Contour Crafting system to build structures on the moon and Mars.Khoshnevis said that though he started with the simple idea of 3-D house printing, he has gone through a great deal of trial and error in developing Contour Crafting. For example, he said he spent years trying to solve the issue of pumping concrete from ground level up to the large robotic machine while making sure it retained its viscosity.But Khoshnevis said he’s grateful for the problem that came up.“It shows something that you haven’t thought about,” he said. “It shows something new and you really don’t know what the outcome will be. It shows the potential to move forward.”The expense of transporting the construction material to the moon will cost as much as $200,000 per kilogram, Khoshnevis said. He believes this high expense will push Contour Crafting technology onto a new level.Khoshnevis has already run some tests using soil from Mars, which he found to be rich with sulfur. He invented a new machine in order to replace water with sulfur to bind the soil.Khoshnevis believes construction on the moon, however, will have certain benefits.“It’s to our advantage. … The building doesn’t have to be as strong [because gravity is one-sixth what it is on Earth],” he said.Once the technology has proven itself, Khoshnevis said landing and departure pads, shelters and even homes could be constructed on other planets.“I am fascinated by the idea of creativity and invention,” he said. “This is the most exciting path in life, to keep doing things that nobody has done.”He is now anticipating a certificate to use Contour Crafting technology to print a real building. The building will take less time and cost less money than regularly constructed buildings. It will also save numerous human resources.“You are taking a good human being with potential of creating and you are pushing him into repeated work. For me that is a crime,” Khoshnevis said.Once Contour Crafting technology is applied into mass production,” Khoshnevis said. “The construction industry will experience drastic change.”With the help of colleagues and the support from family, Khoshnevis said he is enjoying the journey itself. He said that his unprecedented work is what defines him.“The mission of humanity is to expand what’s going on and we have to push our civilization forward,” he said. “Everyone should make a difference.” Editor’s Note: A previous version of this article said transportation of the construction material could cost up to $200,000. The sentence should have read that the transportation of the construction material could cost up to $200,000 per kilogram.  The article has been edited online to reflect this change.The Daily Trojan regrets the errors.Follow us on Twitter @dailytrojanlast_img read more

Dodgers’ Clayton Kershaw back on the beam in win over Rockies

first_imgLOS ANGELES >> Clayton Kershaw was halfway between the mound at Dodger Stadium and the home dugout when he tilted his head up, raised his left arm and shook a closed fist. There was relief. In the top of the first inning, Kershaw threw 33 pitches, nearly a third of his total workload Saturday night, loading the bases with one out. Then, the simmering drama between the Dodgers and Colorado Rockies faded. The left-hander dropped an 89 mph slider to strike out Ian Desmond and fanned Trevor Story on three pitches. “You have to have that mindset where you can’t give in,” Kershaw said. “That’s the biggest thing. Old cliché, one pitch at a time, really holds true. You kind of forget about what happened, try to make that next pitch and just keep doing that until they take you out.” Kershaw ultimately looked in prime form in the Dodgers’ 4-0 victory over Colorado, as they pushed their winning streak to a season-high nine games. It is also their longest since 2013. Over six scoreless innings, Kershaw struck out eight batters, walked one and gave up four hits. And after loading the bases in the top of the first, he went on to retire 13 consecutive Rockies. The run ended with two outs in the top of the fifth when Chris Rusin knocked a two-strike curveball into right field. “Clayton obviously has a way of finding another gear, another level,” Dodgers manager Dave Roberts said. His turnaround was quick. Roberts said he never seriously considered asking a relief pitcher to warm up in the bullpen during the top of the first. But after Kershaw walked Mark Reynolds to load the bases with one out, his pitch count had reached 26 pitches and Roberts admitted, “it starts to get a little dicey there.” It ended as an encouraging performance for the Dodgers’ ace. Five days earlier in the same ballpark, Kershaw surrendered six runs, including a career-high four home runs, in a 10-6 win against the New York Mets, underscoring a suddenly nagging issue. Less than halfway through this regular season, he had seen 17 of his pitches clear the outfield walls — already the most homers he had given up in any season since he debuted in 2008. Roberts sensed Kershaw was eager to rebound. “Every time he takes the mound he’s on edge,” Roberts said. “Tonight, I think there was even more, if that’s even possible.” Presented with Roberts’ comments, Kershaw said, “Obviously, I didn’t want to pitch bad again. That’s about it.” With a win Saturday, the Dodgers added to their lead atop the National League West standings. When the weekend began, the Dodgers led the Rockies and Arizona Diamondbacks by 1.5 games. After Saturday night, they were ahead of Arizona by 2.5 games and Colorado by 3.5 games. The Dodgers were positioned for the series sweep Sunday. The upstart Rockies split two of their previous series this season and took two out of three games in early April. Along with their nine-game winning streak, they have also won 15 of their last 16 games. “Seems like every night you find a different way to win, the confidence that you have coming to the field, like there’s no way you’re gonna lose,” Kershaw said. “That’s what it feels like. We come to the field pretty confident that we’re going to win the game.” A three-run third inning bolstered Kershaw’s effort Saturday, beginning with a leadoff home to straightaway center field by Joc Pederson, who turned on a first-pitch fastball. It continued a recent power surge. After Pederson’s solo blast, the Dodgers had homered in 16 consecutive games, the longest such streak in club history. A pair of runs followed. Yasmani Grandal singled on a hard-hit line drive to right field with one out, scoring Justin Turner from first base. Kershaw was walked with the bases loaded. He was the third straight batter Tyler Chatwood, the Rockies’ right-hander, walked. Chatwood, a Redlands native, struggled Saturday. In three and one-third innings, he allowed four earned runs and saw 11 batters reach base, eight of them by walks. It had been at least a decade since the Dodgers had been walked so many times in one game. Chatwood exited the game in the top of the fourth after Turner popped out. In the previous at-bat, he had walked Pederson The Dodgers scored their first run in the bottom of the second after an RBI single by Kike’ Herndandez brought in Logan Forsythe, who along with Yasiel Puig, had reached base by a walk. Hernandez was in the lineup at shortstop, replacing Corey Seager who remains day-to-day with a mild strain of his right hamstring. Newsroom GuidelinesNews TipsContact UsReport an Errorlast_img read more

This dad’s reaction to son’s first home run is purest, best form of baseball

first_imgView this post on Instagram For all the problems beleaguering baseball’s most prominent league — and that was before the coronavirus pandemic — it’s worth remembering that baseball, in its purest and simplest form, is unadulterated fun.And while COVID-19 has deprived us of so many of baseball’s joys, that doesn’t mean there’s no joy to be found. Case in point: This video, which captures a father pitching to his son and reacting in the absolute best way possible when he dings a homer over centerfield.center_img May 1st, 2020 will forever be remembered in our memory banks! For those who have been following Ash and his baseball journey thus far you know what has gone into this moment! HE DID IT!!!! Homerun over the fence! Pretty legit shot too! All those times in front of our house this past month paid off! So proud of you son! Next goal is the ⚾️! Looking forward to that 2021 season! Also had to rock his new Ronald Acuna jersey! It’s so good to be back!!!! #thankful #baseballlife #loveofthegame #asherthomas #fatherandson #firsthomerun #sctop10 @littlebigs_ @platecrate thank you for all of the support! @ronaldacunajr13 #ronaldacuñajr @braves #gobraves #northgwinnett #bulldogs #4yearsold #sandlottotheshow @mlbnetwork @mlbcut4 #mlb @mlb @sportscenter @maruccisports #marucciA post shared by Cory Willig (@corymotivationbaseball) on May 1, 2020 at 11:33am PDTMORE: 15 things we miss most about baseball, rankedThere are so many things to love about this video, including both the dad and son’s delayed reaction to the dinger, the epic bat flip, the dad hooting and hollering the entire way through, the chest pump, the big hug and the dad’s refrain of, “You did it!”All the best things about baseball, in one 30-second clip.last_img read more

Establish a Center for Disease Control and Prevention

first_imgLiberia’s 169th Independence Day Orator, Dr. Dougbeh Christopher Nyan, has urged the Liberian government through the Ministry of Health and other health stakeholders, to set up an in-country center for disease control (CDC) and prevention, which will be the leading national public health institute in the country.According to Dr. Nyan, who holds a degree in Human Medicine from the Humboldt-University in Berlin, Germany, Liberia needs to train public health professionals at least at the Master’s degree level, stressing, “We should not be content with these haphazard short-term three-to-four-month trainings of people in the field of public health.”The Liberian scientist, who did his post-doctoral fellowship at the prestigious US National Institutes of Health and the University of Pennsylvania, made the proposal when he delivered the National Oration of Liberia’s 169th Independence Day held at the Centennial Memorial Pavilion in Monrovia on Tuesday, July 26. Founding fathers of Liberia declared the nation’s independence on July 26, 1847.Speaking on the theme, “Requirements for Consolidating Progress towards Transformation of Liberia,” he warned that the deadly Ebola still lurks. “We have seen some flare-ups in recent months which were contained. We are also confronted with a multiplicity of other infectious diseases in this country and the region – malaria, typhoid, Lassa fever, tuberculosis, HIV/AIDS, just to name a few,” he said.“And we know that the Liberian healthcare system still has many challenges, but is slowly recovering. That is why we also propose that Liberia commit a lion’s share of the national budget to health in general and financial resources for the establishment of its own Center for Disease Control and Prevention.”He stressed that despite this, it will be “absolutely not sufficient,” and the nation would need to train its own corps of scientists who will devote their time to the bio-molecular studies of infectious diseases, including Ebola, HIV/AIDS, hepatitis, malaria, tuberculosis, zika and so on.The Independence Day Orator also urged the government to closely collaborate with other countries in the region to conduct effective infectious disease surveillance and exchange vital public health pieces of information. He further implored government to develop its own rapid diagnostic capability for early diagnostic testing for infectious diseases. “We need to study the Ebola virus ourselves and study the survivors of EVD ourselves. During the Ebola outbreak, for example, many Liberian organizations and groups came together under the umbrella ‘Liberia Diaspora Emergency Response Task Force on the Ebola Crisis’ in order to help the country and the region fight the Ebola epidemic. We collaborated with several international and local groups including philanthropic and peace organizations and assisted Liberia and the sub-region with medical and relief supplies.”He reminded his audience that through the combined efforts of the government and the Diaspora, Liberia and the other Ebola-affected countries received huge assistance from the US, China, Cuba and other countries who committed either military and medical personnel to help fight the Ebola outbreak in Liberia and the sub-region.Dr. Nyan, whose Liberian origin is traced to River Gee County, then offered his expertise toward such collaboration with the Liberian government.“Well, we do not need to look too far, for standing before you is your son, who has invented a simple, rapid, and affordable test that can detect many infectious pathogens and tell the differences between and among the pathogens at the same time in just 10 to 40 minutes.”After making his proposal for the establishment of the nation’s own Center for Disease Control, President Ellen Johnson Sirleaf honored and admitted him into the Humane Order of African Redemption and conferred upon him the Grade of Knight Great Band, one of Liberia’s highest honors. Speaking with our Health Correspondent, Health Minister Dr. Bernice Dahn welcomed Dr. Nyan’s call for the establishment of the Center. The nation’s Chief Health Specialist, however, stated that authorities at the Health Ministry have since embarked on the project, but under a different name—Liberia Public Health Institute (LPHI).“At the Institute, we will do public health research into which we will incorporate the Liberia Institute of Biomedical Research (LIBR). The Institute will also conduct disease surveillance and will have a public health reference lab,” she stated.She told this newspaper that they are striking deals with some partners, who have expressed interests in constructing a reference lab. The Health Minister did not give the names of the partners as a memorandum of understanding has not yet been signed.Dr. Dahn further stated that the Public Health Institute will collaborate with local universities to establish training that offer Master’s degree in the area.Mr. Tolbert Nyenswah, Deputy Health Minister, whose name became a household name during the nation’s Ebola crisis, because of the cardinal role he played, corroborated what his boss had said earlier. He, however, added that Liberia’s version of the Center for Disease Control is part of the nation’s Investment Health Plan, which includes other important development for the nation’s healthcare delivery.Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)last_img read more