简介:AbstractAdrenal gland trauma is a rare phenomenon, due to the small size and retroperitoneal location of the organ. The majority of adrenal gland trauma is due to blunt force injury and is only rarely encountered due to the penetrating mechanisms. A 20-year-old male sustained a gunshot wound to the left abdomen. Upon exploration, he was found to have a through and through injury to the left adrenal gland, among other injuries. Injury to the adrenal gland due to penetrating trauma is exceptionally rare. The principles of management are to control bleeding from the gland with debridement and hemostasis rather than attempt to resect the entire organ. The management of a penetrating injury to the adrenal gland is straightforward and should not be a contributor to a patient's morbidity or mortality.
简介:Waveenergyhasdrawnmuchattentionasanachievablewaytoexploittherenewableenergy.Atpresent,inordertoenhancethewaveenergyextraction,mosteffortshavebeenconcentratedonoptimizingthewaveenergyconvertorandthepowertake-offsystemmechanicallyandelectrically.However,focusingthewavepowerinspecificwavefieldcouldalsobeanalternativetoimprovethewaveenergyextraction.Inthisexperimentalstudy,theBraggresonanceeffectisappliedtofocusthewaveenergy.BecausetheBraggresonanceeffectoftherippledbottomlargelyamplifiesthewavereflection,leadingtoasignificantincreaseofwavefocusing.Achievedwithanenergyconversionsystemconsistingofapointabsorberandapermanentmagnetsinglephaselinearmotor,thewaveenergyextractedinthewaveflumewithandwithoutBraggresonanceeffectwasmeasuredandcomparedquantitativelyinexperiment.ItshowsthatenergyextractionbyapointabsorberfromastandingwavefieldresultedfromBraggresonanceeffectcanberemarkablyincreasedcomparedwiththatfromapropagatingwavefield(withoutBraggresonanceeffect).
简介:Thisstudypresentsageneralapproachtoderivetheacousticnonlinearityparametersinducedbyvarioustypesofdislocationconfigurationsincludingdislocationstrings(monopoles),dislocationdipoles,dislocationpileupsandextendeddislocations.Itisfoundthatexpressionsoftheacousticnonlinearityparameterinducedbysuchavarietyofdislocationcon-figurationsshareacommonmathematicalform.Theyareallscaledwith(Lch/b)n,whereLchisacharacteristiclengthofthedislocationconfiguration,bisthemagnitudeoftheBurgersvector,andniseither3or4.Semiquantitativeanalysisispresentedtocomparethemagnitudesoftheacousticnonlinearityparametersamongdifferenttypesofdislocationconfigurations.
简介:InthispaperTVDexplicitschemesdevelopedrecentlyinCFDareusedtosimulatefivemodelsofboresduetodam-break.Numericalexperimentsarepresentedtodemonstratethattheyachievehighresolutionandgeneratenospuriousoscillationsandtoshowtheversatilityoftheschemes.
简介:技术上导致的表面波浪的变细理论上并且试验性地被学习。在这篇论文,地面颤动的十九大小包括交通、振动、冲动的构造工作或堆积开车,爆炸,榔头推动和质量掉的道路和栏杆由八不同技术来源导致了被描述,并且技术上导致的地面颤动展出幂定律变细v锝?r,这被显示出?代表q在0.5~2.0的范围并且依靠消息提供者的q打字。执行的比较比理论上期望证明测量代表更加高。地面颤动变细上的一些潜在的效果理论上被分析。最重要的效果由于材料或散布抑制。每个频率部件作为exp指数地被稀释(?kr),要不是宽带刺激,指数的法律的和也产出一条幂定律但是与一个高代表。另外的效果被讨论,例如瑞利的分散由于土壤layering飘动,它在冲动的装载的情况下产出0.5的一个另外的代表。关键词波浪变细-环境颤动-地测试-抑制的材料-散布抑制-瑞利波浪
简介:BasedonBiot'sconsolidationtheory,atwo-dimensionalmodelforcomputationoftheseabedresponsetowavesispresentedwiththefiniteelementmethod.Numericalresultsfordifferentwaveconditionsareobtained,andtheeffectsofwavenon-linearityonthewave-inducedseabedresponseareexamined.Moreover,thewave-inducedmomentaryliquefactioninuniformandinhomogeneousseabedsisinvestigated.Itisshownthatthewavenon-linearityaffectsthedistributionofthewave-inducedporepressureandeffectivestresses,whiletheinfluenceofwavenon-linearityontheseabedliquefactionpotentialisnotsosignificant.
简介:在一座岩石山岳的地下的洞的倒塌的组成的法律基于实验室的结果被调查并且用分析、数字的模型回答实验,和计算。这被显示出地下的开始在上的失败的主要机制为1~10m/s的实践山峰粒子速度振幅范围重要由于关键块的秋天是房顶和墙破裂。在这个负担范围上,压碎的材料具有更加少些重要性。断绝的几何学主要影响关键块的稳定性。进一步的探穴微弱地取决于近隧道的地区的块结构。秋天材料的吝啬的体积是为不同结构的岩石山岳的相当稳定的数量。在高断裂的地区的更低的隧道稳定性被不稳定的关键块的存在和围住块折断的力量特征的减少的更高的可能性引起。平均的块尺寸的减少是一个不太重要的伴随因素。
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简介:Thispaperdiscussesthedynarmicresponseofthinplatesontheelasticfoundationsduetothemovingloadsbymeansofthevariationalcalculus.Inthetextwetakethemassofmovingloadsintoaccount.treataseriesofquestionssuchastheforcedoscillatons,theinfluencesurfacesoftheflexionsandtheinfluencesurfacesoftheinnerforces,resonanceconditionsandcriticalspeedandsoforth.