For the purpose of electromagnetic requirement without reflective layer, the absorbing properties of sandwich structures were calculated. According to the calculated results, different kinds of absorbing foams were prepared and the electromagnetic properties of foams we...

textabstract荷兰刑事司法长期以来秉持孤证不能定案原则（unus testis nullus testis），强调法庭不能仅依据一份证人证言就作出有罪判决。这一原则最早可以追溯到到罗马法时期。意大利十八世纪著名思想家贝卡利亚认为，就定罪而言，仅有一份证人证言是不够的。[1]与之相类似地，荷兰的司法实践很早就确立了一些与之相关的规则，但是1926年制定的《刑事诉讼法》（Wetboek van Strafvordering）并未从立法角度对其加以明确确认。彼时立法者认为证据证明力应该交由法官自由衡量，立法无需对该衡量过程设定最低...

Electromagnetic response of metamaterials is not only determined by its component materials but also the microstructure and arrangements of its resonant elements. The perfect absorber prepared by metamaterial (PMA) can realize 100% absorption in specific frequency bands...

The meteorites are the most important extraterrestrial samples for understanding the formation and the evolution history of the solar system, although ~382 kg lunar samples and ~1500 asteroid mineral grains have been returned by human space exploration activities. The N...

ObjectiveTo summarize the experience in laparoscopy combined with choledochoscopy and duodenoscopy in the treatment of gallstones complicated by intra- and extrahepatic bile duct stones, and to investigate its therapeutic effect. MethodsA total of 413 patients with gall...

Objective 　To investigate the feasibility and security of theodolitic method for locating small pulmonary nodule (SPN) in thoracoscopic subpulmonary lobectomy. Methods 　The clinical data of 146 cases, 58 males and 88 females aged from 30 to 79, were retrospectively anal...

This article provides a concise review of post-thoracotomy pain-relief strategies, focuses on surgical factors that have been investigated to reduce post-thoracotomy pain, and explores the effectiveness of various treatments for this condition. Although some interventio...

The algorithm of minimum test case set conforming to MC/DC criterion has important practical value.Firstly,the Boolean expression is transformed into a syntax binary tree,and then the matrix combinational logic operation is used to recurse layer by layer to obtain a com...

Mapping function errors are usually not taken into consideration, when space geodetic data observed by VLBI, GNSS and some other techniques are utilized to estimate troposphere delay, which could, however, probably bring non-ignorable errors to solutions. After analyzin...

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