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Health 2024年第7期16卷 674-687页

作者： Mélida M. Aguilar Chamorro sergio Vargas Collado leslie Pérez Ruíz David Márquez soriano Jorge Luis soriano García Clínica senior Managua Nicaragua Centro de Inmunología Molecular Havana Cuba Catalysis s.L. Madrid Spain

Objectives: To assess the efficiency in terms of cost-effectiveness (CE) of oral Renalof® treatment versus extracorporeal shockwave lithotripsy (EsWL) in the treatment of kidney stones ≤ 1 cm in Nicaragua. Methods: A cost-effectiveness economic evaluation was carried out based on the results obtained in the randomised, prospective, observational, single-blind, prospective, phase 2 clinical trial. Cost-effectiveness and the incremental cost-effectiveness ratio (ICER) were calculated. Economic data were obtained from the Economics Department of Clínica senior in Managua, Nicaragua. The monetary cost was expressed in Us dollars (UsD). Results: Treatment with Renalof® yielded a CE of $1,323.08/% remission, while EsWL was $9,498.54/% remission. The ICER shows that, in order to achieve a high percentage of kidney stone remission with EsWL, an extra $4,734.70 per patient must be invested. Conclusions: The use of Renalof® is shown to be a more cost-effective option than EsWL. It is recommended for the treatment of kidney stones ≤ 1 cm in size.

关键词： Economic Evaluation Pharmacoeconomics Renalof® Extracorporeal shockwave Lithotripsy Kidney stones

联合作业协议下油气并购交易优先购买权探讨——雪佛龙公司收购赫斯公司案例分析

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国际石油经济 2024年第6期32卷 87-92页

作者：张伟华联合能源集团

雪佛龙宣布收购赫斯的交易引发了埃克森美孚和中国海油提起的国际仲裁。该案例涉及国际油气并购交易中联合作业协议下的优先购买权问题。国际能源谈判者协会2023年版标准联合作业协议对于优先购买权、油气并购交易是否引发优先购买权有... 详细信息

雪佛龙宣布收购赫斯的交易引发了埃克森美孚和中国海油提起的国际仲裁。该案例涉及国际油气并购交易中联合作业协议下的优先购买权问题。国际能源谈判者协会2023年版标准联合作业协议对于优先购买权、油气并购交易是否引发优先购买权有明晰简略的规定。雪佛龙收购赫斯的交易是美国上市公司并购交易中的典型的“倒三角”合并,赫斯发生了控制权变更,该交易应当适用优先购买权。这一案例给油气并购交易实务从业者多方面启示:1)油气并购交易需要考虑交易是否带来所涉及油气资产的优先购买权的适用问题,若适用,优先购买权的放弃是油气交易交割的先决条件;2)油气并购交易如果受到优先购买权的限制,需要在交易中考虑相关机制进行处理和应对;3)可在联合作业协议中提前写入“上市公司并购交易不适用本协议所约定的优先购买权”;4)提前锁定有权行使优先购买权的第三方的放弃权利;5)在第三方行使优先购买权后,买方需要确定自己可以终止交易并不承担任何责任。

关键词：国际油气并购控制权变更联合作业协议优先购买权

Farmers Reap Right to Repair Agricultural Equipment

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Engineering 2023年第8期27卷 8-10页

作者： Mitch leslie senior Technology Writer

A farmer is ready to harvest the winter wheat crop when his combine harvester breaks *** if the problem would be relatively simple to remedy,the farmer probably cannot make the repair himself or get help from an independent shop because manufacturers have restricted access to the tools,documentation,and other requirements for fixing their equipment[1].Instead,the farmer will likely have to turn to one of the manufacturer’s dealers,which could mean waiting days or even weeks for a service call from a company technician[2].In the meantime,the farmer’s crop sits unharvested,vulnerable to damage or destruction by bad weather[2].

关键词： dealer harvest likely

signaling the Future, Cell Phones Gain Limited satellite-Link Capabilities

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Engineering 2023年第9期28卷 4-6页

作者： Mitch leslie senior Technology Writer

On 13 December 2022,a couple was driving through the Angeles National Forest near Los Angeles,CA,UsA,when their car slid off the road,plowed 100 m down a steep hillside,and landed upside down at the bottom of a canyon[1].Although the couple suffered only minor injuries,they were trapped in the canyon,and in the remote area the passenger could not get any reception on her iPhone 14 cellular ***,she was able to send an sOs through a new feature on the phone that routes such messages via satellites[2].Rescuers alerted to the couple’s location airlifted them out of the canyon later the same day.

关键词： Rescue injuries driving

With Great Expectations, Webb Telescope Finally Lifts Off

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Engineering 2022年第11期8卷 3-5页

作者： Mitch leslie senior Technology Writer

Over the last 30 years,the Hubble space Telescope has revolutionized astronomy and awed the public with gorgeous photos of the *** expect even bigger achievements from Hubble’s successor,the James Webb space Telescope(JWsT),which blasted off atop an Ariane 5 rocket from the Guiana space Center in Kourou,French Guiana,on December 25,2021(Fig.1)[1].

关键词： Webb Great astronomy

Construction Industry Innovation Takes Aim at Reducing Carbon Emissions

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Engineering 2022年第12期19卷 7-10页

作者： Mitch leslie senior Technology Writer

With only 18 floors,Mjøstårnet,a ruddy blonde building in Brummundal,Norway(Fig.1),is dwarfed by modern *** is not even the tallest building in *** the structure,which includes offices,apartments,and a hotel,stands out for another reason—it is built almost entirely of wood[1].Instead of the usual steel or concrete,the building’s beams,columns,and trusses are made from glulam,produced by gluing pieces of wood together with the grain in parallel[2].The lower floors,walls,stairs,and elevator shafts are also constructed of wood[3].Only the floors of the upper stories,which contain the apartments,are concrete to increase stability and improve acoustics[4].For three years after its completion in 2019,the 85.4 m Mjøstårnet was the world’s tallest timber building,but the Ascent MKE tower in Milwaukee,WI,UsA,which opened in mid-2022,is just over 1 m taller[5].More than 1300 other so-called mass timber buildings,which substitute engineered wood products such as glulam for steel and concrete,are currently under construction in the United states alone[6].

关键词： floor entirely walls

Innovative scanners Boost Medical Imaging Quality and Utility

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Engineering 2022年第9期16卷 3-5页

作者： Mitch leslie senior Technology Writer

During his 30-year career,radiologist Philippe Douek has pored over thousands of images produced by computed tomography(CT)scanners,looking for signs of illness or *** the professor of radiology at the University Claude Bernard Lyon 1 in France,was wowed by the performance of a new type of device known as a photon-counting detector(PCD)CT *** and his colleagues have been putting prototype PCD machines through their paces,scanning animals,imaging dummies,and even Douek’s *** images produced with the technology“are much more detailed,”he said.

关键词： scanner looking scanner

Robots Tackle DARPA Underground Challenge

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Engineering 2022年第6期8卷 2-4页

作者： Mitch leslie senior Technology Writer

In a narrow passageway beneath the city of Louisville, KY, UsA, a meter-tall robot with a yellow, rectangular body and four limbs that resemble a dog’s legs carefully descended a rocky slope. But as the robot attempted to turn, it lost its footing and tumbled down the slope, landing on its side. A modified commercial model known as‘‘spot,”the machine almost immediately began extending and rotating its legs, pushing against the floor of the passageway. In about 40 s, it stood upright again and resumed exploring the passage.

关键词： robot beneath DARPA

space Tourism Begins to Take Off

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Engineering 2022年第3期8卷 4-6页

作者： Mitch leslie 机构不详

A record number of non-astronauts flew into space in 2021,including a 90-year-old actor,a physician’s assistant,a football player turned TV host,a Dutch teenager,and four *** companies that sent most of these civilians aloft-Virgin Galactic,Blue Origin,and spaceX-hope the flights will inaugurate a boom in space *** Origin,started by Amazon founder Jeff Bezos,claims it has sold nearly 100 million UsD of tickets for upcoming trips[1],while 700 people have paid up to 450000UsD apiece for places on future flights by Virgin Galactic,launched by British billionaire Richard Branson[2].

关键词： companies Amazon Virgin

Approximating the Gaussian as a sum of Exponentials and its Applications to the Fast Gauss Transform

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Communications in Computational Physics 2022年第1期31卷 1-26页

作者： shidong Jiang leslie Greengard Department of Mathematical sciences New Jersey Institute of TechnologyNewarkNJ 07102USA Courant Institute of Mathematical sciences New York UniversityNew YorkNY 10012USA Center for Computational Mathematics Flatiron InstituteSimons FoundationNew YorkNY 10010USA

We develop efficient and accurate sum-of-exponential(sOE)approximations for the Gaussian using rational approximation of the exponential function on the negative real *** digit accuracy can be obtained with eight terms and ten digit accuracy can be obtained with twelve *** representation is of potential interest in approximation theory but we focus here on its use in accelerating the fast Gauss transform(FGT)in one and two *** one-dimensional scheme is particularly straightforward and easy to implement,requiring only twenty-four lines of MATLAB *** two-dimensional version requires some care with data structures,but is significantly more efficient than existing *** a detailed presentation of the theoretical foundations,we demonstrate the performance of the fast transforms with several numerical experiments.

关键词： Fast Gauss transform sum-of-exponential approximation best rational approximation model reduction