|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | A fiber optoacoustic guide with augmented reality for precision breastconserving surgery显示文摘Lumpectomy,also called breast-conserving surgery,has become the standard surgical treatment for early-stage breast cancer.However,accurately locating the tumor during a lumpectomy,especially when the lesion is small and nonpalpable,is a challenge.Such difficulty can lead to either incomplete tumor removal or prolonged surgical time,which result in high re-operation rates(~25%)and increased surgical costs.Here,we report a fiber optoacoustic guide(FOG)with augmented reality(AR)for sub-millimeter tumor localization and intuitive surgical guidance with minimal interference.The FOG is preoperatively implanted in the tumor.Under external pulsed light excitation,the FOG omnidirectionally broadcasts acoustic waves through the optoacoustic effect by a specially designed nano-composite layer at its tip.By capturing the acoustic wave,three ultrasound sensors on the breast skin triangulate the FOG tip’s position with 0.25-mm accuracy.An AR system with a tablet measures the coordinates of the ultrasound sensors and transforms the FOG tip’s position into visual feedback with<1-mm accuracy,thus aiding surgeons in directly visualizing the tumor location and performing fast and accurate tumor removal.We further show the use of a head-mounted display to visualize the same information in the surgeons’first-person view and achieve hands-free guidance.Towards clinical application,a surgeon successfully deployed the FOG to excise a“pseudo tumor”in a female human cadaver.With the high-accuracy tumor localization by FOG and the intuitive surgical guidance by AR,the surgeon performed accurate and fast tumor removal,which will significantly reduce re-operation rates and shorten the surgery time. | Lu Lan Yan Xia Rui Li Kaiming Liu Jieying Mai Jennifer Anne Medley Samilia Obeng-Gyasi Linda K.Han Pu Wang Ji-Xin Cheng | 2018 | Light(Science & Applications)2018，7，1： | 4 |
| 2 | 21世纪畜牧业在提高人类生活水平中的作用显示文摘1996年世界人口为57亿,预计2020年将会高达79亿。人口的快速增长将会导致诸如营养不良和环境破坏等许多社会问题。全世界有9亿多人口因粮食总产量不足和农作物分配不均衡而导致营养不良。可利用的畜产品将对解决以上问题起到关键性作用。本文主要回顾20世... | In K.Han 蒋满喜 杜立新 | 1999 | 国外畜牧科技1999，26，2： | 4 |
| 3 | 一种用于结构动态过程数值模拟的广义有限元法显示文摘提出了一种能同时处理连续体和离散体动态过程的有限元法.该法通过构造接触力模型,将传统的离散元当做标准的一节点有限单元来看待.新构造的一节点单元与常规有限单元具有同样物理特征,包括应力和应变.从而,将离散元算法与有限元算法紧密结合在一起,形成了统一的、与现有有限元系统兼容的广义有限元计算模型.这种模型不仅简化了计算过程,还可最大限度地发挥现有有限元代码的功能.数值算例表明,新方法可以更加有效地模拟大量离散体与连续体相互作用的复杂动力学过程. | 王福军 黎耀军 K.Han Y.T.Feng | 2006 | 中国科学(G辑)2006，36，4： | 3 |
| 4 | 不同性别生长猪所需最佳苏氨酸与赖氨酸比率显示文摘本研究通过调查苏氨酸与赖氨酸的比率对猪生长性能、表观可消化能和血液尿素氮(BUN)浓度的影响,估测生长阉公猪和小母猪所需最佳苏氨酸与赖氨酸的比率。试验采用150头杂交猪(长白×约克夏×杜洛克,平均体重为16.75±0.45,其中阉公猪75头,小母猪75头),按2×3析因设计,随机分成6个处理:阉公猪日粮含赖氨酸1.12%,按苏氨酸与赖氨酸比率为50%、60%和70%分成3个处理:小母猪日粮含赖氨酸1.33%,按苏氨酸与赖氨酸比率为50%、60%和70%分成3个处理。经整个试验期(体重从16至56)。在平均日增重、平均日采食量和饲料转化率方面,动物性别和苏氨酸与赖氨酸比率之间无相互影响。在生长性能方面,有明显的性别影响:与小母猪相比,阉公猪表现出较好的生长性能,消耗较多的饲料(P<0.01)以及生长的较快(P<0.01)。随着苏氨酸与赖氨酸比率的增大,阉公猪的ADG和FCR有增加的倾向,但差异不显著。在除粗灰分(CA)外的可消化性养分方面,动物性别和苏氨酸与赖氨酸比率之间无相互影响。在性别之间,除小母猪对钙具有较高的可消化性(P<0.01)外,可消化性养分没有存在的差异。而日粮苏氨酸与赖氨酸比率对可消化性养分无影响。可消化性必需氨基酸(EEA)、非必需氨基酸(NEAA)和总氨基酸(TTA)的平均值没有受到性别和苏氨酸与赖氨酸比率的影响。没? | 陈红平 周作红 W.H.Chang J.H.lee k.N.Paik In K.Han | 2002 | 江西饲料2002，，6： | 2 |
| 5 | 肉毒碱对早期断奶仔猪的作用显示文摘肉毒碱对能量代谢的重要作用是在β-氧化时促进脂肪酸的转运。肉毒碱能改善新生仔猪对能量的利用效率,提高断奶仔猪的生产性能以及母猪的繁殖性能。但是,肉毒碱的作用仍有争议,这可能与动物的年龄、体重、日粮组成和环境条件等因素有关。此外,肉毒碱的作用模式和猪在各生长阶段的最佳添加量还不清楚,需要进一步研究。 | In K.Han 陈勇 曹光辛 | 1999 | 国外畜牧科技1999，26，2： | 2 |
| 6 | Sensitive detection and accurate monitoring of Plasmodium vivax parasites on routine complete blood count using automatic blood cell analyzer (DxH800TM)显示文摘 | H. K.LEE S. I.KIM H.CHAE M.KIM J.LIM E. J.OH Y.KIM Y. J.PARK W.LEE K.HAN | 2012 | International Journal of Laboratory Hematology2012，，： | 1 |
| 7 | 肉毒碱对早期断奶仔猪的作用显示文摘肉毒碱对能量代谢的重要作用是在β-氧化时促进脂肪酸的转运。试验证明,肉毒碱能改善新生仔猪对能量的利用效率,提高断奶仔猪的生产性能以及母猪的繁殖性能。但是,肉毒碱的作用仍有争议,这可能与动物的年龄、体重、日粮组成和环境条件等因素有关。此外,肉毒碱的作用模式和猪在每一生长阶段的最佳添加量还不清楚,需要更多的试验以确认其在猪营养中的重要性。 | 陈勇 In K.Han J.H.Kim | 1999 | 国外畜牧学(饲料)1999，，2： | 1 |
| 8 | Predictive value of pituitary tumor morphology on outcomes and complications in endoscopic transsphenoidal surgery显示文摘Purpose:Endoscopic transsphenoidal surgery(ETSS)is an increasingly utilized approach for resection of pituitary tumors.Prior studies have evaluated preoperative tumor size,location,and extent as prognostic factors for surgical resection.There is little data on the relationship between preoperative pituitary tumor radiographic morphology and surgical outcomes.Study Design:Retrospective longitudinal study.Setting:Single tertiary care institution.Subjects and Methods:Preoperative magnetic resonance imaging and computed tomography scans from patients undergoing ETSS for pituitary tumor resections from 2007 to 2017 were retrospectively evaluated.A neuroradiologist classified these pituitary tumors into six morphologic groups,each defined by volume,dimensions,extension,and shape.Surgical difficulty,rates of incomplete resection,and postoperative complications were then stratified in relation to the morphologic groups.Results:Pituitary tumors from 131 patients were classified from preoperative imaging into six characteristic morphologies:(1)microtumor,(2)round,(3)transverse oblong,(4)superior-inferior oblong,(5)bilobed,and(6)large lobulated.Tumors that were characterized with the large lobulated,bilobed,and transverse oblong morphologies correlated with higher rates of postoperative evidence of residual tumor(70%,36%,and 47%,respectively,all P<0.002).Likewise,large lobulated,bilobed,and transverse oblong morphologies were also associated with intraoperative cerebrospinal fluid leaks(70%,31%,and 35%,respectively,all P<0.05).Conclusions:We describe a novel descriptive system for the morphology of pituitary tumors that can be determined from preoperative imaging.Different tumor morphologic groups are associated with varying degrees of gross tumor resection,complications,and surgical difficulty.Utilizing pituitary tumor morphology may aid surgeons in planning the extent of resection,need for complex closure,and patient counseling. | Andrew T.Heffernan Joseph K.Han John Campbell James Reese William G.Day Joshua Edwards Ran V.Singh Wylie Zhu Kent K.Lam | 2022 | World Journal of Otorhinolaryngology-Head and Neck Surgery2022，8，4： | 1 |
| 9 | 加钒对高碳钢内珠光体形核和长大的影响显示文摘研究了加钒对高碳钢显微组织的影响,用分辨率高的金相技术仔细地检测了奥氏体分解的初期情况,进一步证实了加钒会促使形成晶界铁素体膜,甚至在共析成份范围内亦然,证明了这种铁素体是共析转变的产物,而不是先共析铁素体。这是因为首次转变是碳化物微粒沿晶界形核,这些碳化物基本上等同于渗碳体。看来,钒的存在改变了晶界渗碳体的形貌和分布,而不是使其形成网状物,这些渗碳体以细小弥散的微粒形态密布于晶界上。认为出现这种现象的原因是因为钒增大了渗碳体的形核驱动力。晶界渗碳体的形成要消耗周围的碳,从而促进铁素体的形成,但由于这些渗碳体是不连续的、呈微细弥散状,因而被数量更多的铁素体相所淹没。在这样的区域里,晶粒完全同步长大制度的起点被推迟,以后就在铁素体和奥氏体界面生成珠光体。 | K.Han T.D.Mottishaw 吴根土 | 1997 | 浙江冶金1997，，1： | 1 |
| 10 | Modelling of Magnetorheological Fluids with Combined Lattice Boltzmann and Discrete Element Approach显示文摘A combined lattice Boltzmann and discrete element approach is proposedfor numerical modelling of magnetorheological fluids. In its formulation, the particledynamics is simulated by the discrete element method, while the fluid field is resolvedwith the lattice Boltzmann method. The coupling between the fluid and the particlesare realized through the hydrodynamic interactions. Procedures for computing magnetic, contact and hydrodynamic forces are discussed in detail. The applicability ofthe proposed solution procedure is illustrated via a two-stage simulation of a MR fluidproblem with four different particle volume fractions. At the first stage, simulationsare performed for the particle chain formation upon application of an external magnetic field;and at the second stage, the rheological properties of the MR fluid underdifferent shear loading conditions are investigated with the particle chains establishedat the first stage as the initial configuration. | K.Han Y.T.Feng D.R.J.Owen | 2010 | Communications in Computational Physics2010，7，5： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员