20 Dec
2019

Warriors’ Steve Kerr offers a sneak preview on how he will handle next season’s roster

first_imgLAS VEGAS – Should he have time between practices and hearty meals, Warriors coach Steve Kerr can venture to the casinos here and learn more sobering news about his team.Unlike the past five years, the general public does not believe the Warriors will win the NBA championship. Bovada tabbed the Warriors with 14/1 odds to win the NBA championships, while granting more favoritism to the Houston Rockets (12/1), Philadelphia 76ers (10/1), Milwaukee Bucks (6/1), Los Angeles Lakers (7/2) and Los …last_img

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19 Dec
2019

Flagellar Oars Beat Like Galley Slaves In Synchronization

first_imgThe Dec. 14 issue of Current Biology1 investigated another mystery in the operation of eukaryotic flagella:Flagella are microtubule-based structures that propel cells through the surrounding fluid.  The internal structure of a flagellum consists of nine parallel doublet microtubules arranged around a central pair of singlet microtubules (Figure 1).  Force for propulsion is provided by thousands of dynein motors anchored in rows along one side of each doublet, which can walk along the microtubule of the adjacent doublet.  In order to produce coordinated bending of the flagellum, these dynein motors — organized into multi-headed complexes called the inner and outer dynein arms — must produce their power strokes in synchrony, like the oarsmen on an ancient Mediterranean war-galley.  But whereas oar-strokes were coordinated by a continuous drum-beat, it is much less clear how flagellar dynein motors are synchronized.The authors of the paper consider growing evidence that the central microtubule pair provides the drumbeat, with the aid of “a protein complex called the dynein regulatory complex, located between the spokes and the dynein arms.”  However, “The molecular mechanism by which the central pair regulates dynein is not known.” 1Kimberly A. Wemmer and Wallace F. Marshall, “Flagellar Motility: All Pull Together,” Current Biology Volume 14, Issue 23, 14 December 2004, Pages R992-R993, doi:10.1016/j.cub.2004.11.019.Thus another deeper level of complexity becomes apparent.  A collection of parts is not enough; they must coordinate their actions.  No wonder Antony Flew considered Darwin’s Black Box an “amazing book” and has become a theist (see 12/09/2004 entry).(Visited 38 times, 1 visits today)FacebookTwitterPinterestSave分享0last_img read more

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18 Dec
2019

Soybean diseases the target of new university partnership

first_imgShare Facebook Twitter Google + LinkedIn Pinterest Purdue Extension has joined six other universities from the Midwest and Ontario, Canada, in a partnership with the North Central Soybean Research Program to create a series of reference materials helping producers identify and manage a variety of soybean diseases.The Soybean Disease Management series will be updated regularly with the latest available information on diseases and management options, said Kiersten Wise, Purdue Extension plant pathologist.“We are entering the time of the season when symptoms of many soybean diseases begin to emerge,” she said. “With the wet conditions we had earlier in the year, we may see more soybean disease issues in 2015, and it is important that farmers know what is going on in their fields.”Wise said the project began in 2013 with the outbreak of Soybean Vein Necrosis Virus.“This was a new disease in many states and we realized that there was very little information available to provide to farmers about this disease,” she said. “This group compiled what was already known about the disease into a publication that we were able to make available to farmers to answer their questions about SVNV before the next growing season.”In 2014, stem canker and pod and stem blight were more prevalent in Midwestern soybean fields, and the group developed several publications to address those diseases.Experts from the participating institutions stay in regular contact and develop resources on different emerging diseases each year, Wise said. The group has also used recent research to update past publications on common diseases such as white mold and charcoal rot, and soybean seedling blights. All Extension plant pathologists in the North Central region review the publications prior to release.“These publications create awareness about soybean diseases, and are easily updated as we learn more about these diseases,” Wise said. “If farmers are aware of and able to accurately identify the diseases in their fields, then we can take steps to better manage those issues the next time the field is planted to soybeans.”Full-length publications currently available in the series are:* Stem Canker* Soybean Seedling Diseases* Pod and Stem Blight and Phomopsis Seed Decay* Soybean Vein Necrosis Virus* Charcoal Rot* White MoldScouting cards are available for common soybean seed diseases, soybean stem diseases and white mold in soybeans.The project is supported by soybean checkoff funds provided by of the North Central Soybean Research Program and the United Soybean Board.All materials can be downloaded through Purdue’s The Education Store at https://edustore.purdue.edu/ or on the North Central Soybean Research Program Soybean Research and Information Initiative website under the “new publications” tab at http://soybeanresearchinfo.com/.last_img read more

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3 Dec
2019

Parts of Pune flooded as Mutha canal wall breaches

first_imgParts of Pune city were inundated on Thursday following a major breach in the right wall of the Mutha canal, causing damage to homes situated along the Mutha riverfront area.Rescue teams and Fire department authorities, who rushed to the spot said there was no loss of life and that all people who were in harm’s way had been evacuated.According to authorities, the wall of the canal’s right bank caved in sometime after 10:30 a.m. in the morning, leading to flooding inside hundreds of shanties and slums in the city’s Parvati area, affecting more than 5,000 residents living in these parts. “The situation is under control now. The flow of water reduced by late noon,” said a fire department official.Irrigation department officials immediately stopped further discharge of water from the Khadakwasla dam — one of Pune’s lifelines — to the canal following the breach and said the matter was being investigated.Angry residents Angry residents surrounded Pune Mayor Mukta Tilak when she visited the homes of those afflicted. “All our utensils and savings have flown away. If this had occured at night, it might have led to great loss of life. The city’s politicians only come to us for votes during election time, but are least bothered in maintaining any infrastructure,” said an irate resident.Ms. Tilak however said that the Pune civic body had, in the pas,t warned the Irrigation Department authorities about repairing the canal wall, but the Irrigation authorities allegedly failed to take cognizance of it.“The Pune Municipal Corporation (PMC) will do everything to provide respite to those afflicted by this incident. We will make provisions for lodging those residents in temporary homes whose shanties have been destroyed by the discharge. We will make sure they are recompensed,” said Mayor Tilak.Smaller mud homes and tin-shed shanties across a 12-km stretch from the areas around the Khadakwasla dam to the Dandekar bridge were hit by the breach. Police personnel, who rushed to the spot, stopped traffic along the Dandekar bridge which remained submerged owing to the sudden flooding.“This is sheer negligence on part of authorities. The canal wall caved in owing to the tremendous force of the discharge from the Khadakwasla dam. The discharge has been going on at the rate of an excessive 1200 cusecs of water for more than a month. The question arises as to who authorized this discharge which could have proven fatal,” said noted city-based environmentalist and RTI activist Vivek Velankar, speaking to The Hindu.Demanding an explanation from the irrigation authorities for the sheer lack of maintenance of the structure, Mr. Velankar noted that the decision to release water was all the more mystifying as the city’s water needs were satisfied for the moment and the rains had stopped.“Currently, the city requires only 300 cusec of water to fulfill the needs of those living in the Cantonment area. So, what was the motive behind this excess discharge which put strain on the canal walls?” he said.The 140 km-long Mutha canal built during the period of the British Raj, which conveys the water from the Khadkwasla dam to Indapur tehsil, has scarcely been subject to audits on part of the State of civic body authorities. “This incident clearly proves the lack of any frequency audits to check the condition of the canal wall. The prime reason for this negligence is the eternal conflict between the State Irrigation Department and the Pune Municipal Corporation (PMC) with both bodies passing the buck when it comes to maintenance of any structure,” said RTI activist Vijay Kumbhar, speaking to The Hindu.last_img read more

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