Loop

摘要： 某压水堆核电厂在热停堆平台期间,现场发现汽轮机旁路排大气系统(GCT-a)阀门(GCT133VV)开关频繁动作,估计频率为10 s一次,现场可以明显听到主阀落座的声音,阀门出口消音器也可观察到明显的排汽变化,即GCT-a阀门出现了较频繁的振荡现象。本文对该现象进行了原因分析,并针对性的给出了解决方案。研究表明,GCT-a阀门采用比例积分微分(PID)控制系统进行动作控制,其中比例系数P参数的大小表征的是阀门开启的速率,该参数设置越大,阀门开启越快。由于该阀门的功能是限制瞬变过程中二回路超压,因此该参数需要保证II类瞬态中不发生二回路超压现象,即需要找到一组P参数既能满足安全要求,又能降低阀门振荡频率。通过P参数敏感性分析及二类瞬态超压最恶劣工况(丧失厂外电源LOOP)的安全评价,本文给出了不同P参数的分析结果,电厂通过优化P参数设置后,解决了现场阀门频繁动作的问题。本文研究结果可供电厂运行参考。

摘要： 利用大肠杆菌(Escherichia coli)表达系统,成功异源表达并纯化了来自Pseudomonas syringae的一种周质甘露糖醛酸C?5差向异构酶AlgG_PSEAM及其loop439?455截短体.通过对产物进行分析发现,截去loop439?455后,该甘露糖醛酸C?5差向异构酶的活性提高了14.7％.进一步分析,发现AlgG_PSEAM同时具有褐藻多糖裂解酶活性且通过测定其裂解酶活性发现,截去loop439?455后,裂解酶活性提高了23.3％.截去loop439?455,可同时提高AlgG_PSEAM的甘露糖醛酸C?5差向异构酶和褐藻多糖裂解酶活性.

摘要： 目的 总结Loop技术在腔静脉滤器回收困难病例中的临床应用经验与技巧.方法 回顾性分析肇庆市第一人民医院及中山大学附属第三医院自2015年1月至2020年6月期间采用LOOP技术处理腔静脉滤器回收困难患者27例,滤器留置时长为7～120 d,平均45 d.结果 17例患者的滤器被整体取出,造影显示下腔静脉通畅,无对比剂外渗;成功率为63.0％,平均手术用时96 min.10例患者滤器未被成功取出,均未发生手术相关并发症,并终身抗凝.27例患者术后顺利出院,随访期间无患者出现症状性的肺动脉栓塞.结论 LOOP技术应用于腔静脉滤器回收困难病例中安全性高、操作简单、临床有效,值得临床推广.

摘要： 目的总结Loop技术在腔静脉滤器回收困难病例中的临床应用经验与技巧。方法回顾性分析肇庆市第一人民医院及中山大学附属第三医院自2015年1月至2020年6月期间采用LOOP技术处理腔静脉滤器回收困难患者27例,滤器留置时长为7~120 d,平均45 d。结果17例患者的滤器被整体取出,造影显示下腔静脉通畅,无对比剂外渗;成功率为63.0%,平均手术用时96 min。10例患者滤器未被成功取出,均未发生手术相关并发症,并终身抗凝。27例患者术后顺利出院,随访期间无患者出现症状性的肺动脉栓塞。结论LOOP技术应用于腔静脉滤器回收困难病例中安全性高、操作简单、临床有效,值得临床推广。

摘要： 像许多技术型初创企业一样,Loop Industries公司(以下简称“Loop公司”)起始于一个愿景,并在一个车库中建立起来。3年后,采用在车库中开发出的技术,该公司“将消费后的PET转化为纯料品质的材料”的愿景已经成为现实。其专有的“升级回收”流程能将废弃PET分解为化学结构单元,同时分离出杂质,如染料、添加剂和食物。

摘要： Consciousness is the unified, structured, subjective experience that we all share. The Default Space Theory has been proposed as a unified theory of consciousness that includes the brain and body in describing the infrastructure of consciousness. We have presented the theory in journals with a variety of academic specialties;however, the model is continually being developed. Due to the current state of science on the nature of conscious experience lacking hard data, the theory’s concepts must thoroughly explain and shoulder phenomenological observations including the phenomenology of deficits of consciousness. According to the theory, the thalamus serves as a central hub which networks the globally distributed, and continuous fast oscillations not only among the brain, but also the eyes, ears, skin, and other sensory organs. These oscillations form the virtual template of external space within the mind in which external sensory information is integrated into this pre-existing, dynamic space. In this article, we explore phenomenological support for our theory of conscious experience in which such experience resides entirely in such a virtual space, termed the default space. In order to provide such support, we discuss simple personal experiments and observations which anyone can partake along with phenomenal symptoms of clinical deficits. We encourage readers to perform the personal experiments we describe in order to gain an understanding of the various concepts of the theory. The neurological deficits we elucidate not only support the theory but clarify obscurities surrounding these conditions. We assert the support we give in our theory here will advance the uphill struggle many paramount theories face in gaining initial acceptance. Further research is needed in order to acquire empirical evidence for the veracity of our theory.

摘要： In this paper, a very simple novel model is presented concerning the unified field theory (“theory of everything”). In the scope of this novel theory, it is assumed that matter, space and time are quantized. It is assumed that the space is subdivided into cubic elementary cells (space quanta), and in each of its eight corners a Delta potential is positioned. That means the Delta potentials are equidistantly arranged, so that the Delta potentials are forming a lattice similar to a crystal lattice in solid state physics. The novel theory is analogue to the Kronig-Penney model well-known in solid state physics: a crystal lattice comprises Delta potentials arranged equidistantly to one another, so the lattice space can be considered as being quantized by an array of equally spaced Delta potentials or the lattice space is divided into cubic elementary cells (space quanta). But instead of electrons, material quanta are inserted into the cubic elementary cells or space quanta. So the material quanta are not freely vibrating (unbound state), but are vibrating in a bound state with discrete energy levels separated by an energy gap. This is due to the presence of the array of Delta potentials. In the frame of this novel theory the Schr?dinger Equation for the Kronig-Penney-Model is not solved by differentiation, but the Schr?dinger Equation is integrated yielding the formula , by whose discussion the existence of an energy gap is revealed. This energy gap is responsible if the material quantum occurs as light quantum (photon) or mass quantum.

摘要： Multiply-connected Hall plates show different phenomena than singly connected Hall plates. In part I (published in Journal of Applied Physics and Mathematics), we discussed topologies where a stream function can be defined, with special reference to Hall/Anti-Hall bar configurations. In part II, we focus on topologies where no conventional stream function can be defined, like Corbino disks. If current is injected and extracted at different boundaries of a multiply-connected conductive region, the current density shows spiral streamlines at strong magnetic field. Spiral streamlines also appear in simply-connected Hall plates when current contacts are located in their interior instead of their boundary, particularly if the contacts are very small. Spiral streamlines and circulating current are studied for two complementary planar device geometries: either all boundaries are conducting or all boundaries are insulating. The latter case means point current contacts and it can be treated similarly to singly connected Hall plates with peripheral contacts through the definition of a so-called loop stream function. This function also establishes a relation between Hall plates with complementary boundary conditions. The theory is explained by examples.

摘要： OBJECTIVES: 1) To draw up the epidemiological profile of patients who have benefited from cervical cancer screening by visual inspection after application of acetic acid (VIA) and then describe the results of the test, the colposcopy, histological and therapeutic aspects in case of dysplasia. 2) To evaluate the performance of IVA in cervical cancer screening and its feasibility in low-resource countries. MATERIALS AND METHODS: This was a prospective and descriptive study carried out from 06 June 2015 to 31 January 2016 (7 months) at the Maternity Center at Nabil Choucair health center in Dakar. The patients had been screened for cervical cancer by visual inspection, which consisted of applying 3% acetic acid after setting up a vaginal speculum. The test was considered positive if there were intense white areas in the cervix. Colposcopy was performed in case of a positive VIA result. This colposcopy included an unprepared examination, an examination after application of 3% acetic acid and an examination after application of Lugol solution. The colposcopic report is made according to the terminology of the French Society of Colposcopy and Cervico-Vaginal Pathology. Patients with major changes or unsatisfactory colposcopy had undergone diathermic loop resection. Surgical specimens were sent to pathologic anatomy and follow-up was performed according to the results of the histology. The studied parameters concerned the socio-demographic aspects, the results of the VIA test, the results of the colposcopy after a positive test, the therapeutic aspects in case atypical transformation zone grade 2 or of unsatisfactory colposcopy, the results of the histology after the conization and the followed. The collection of data was done thanks to a file and the statistical analysis thanks to the software Epi-info version 7. RESULTS: 899 patients were involved in the study. The epidemiologic profile of our patient was a multipara in a period of genital activity, aged 42.2 years with a mean gestational weight of 4.5, and a parity of 4. In our series, the patients had their first sexual intercourse with 20.8 years old. In our study, 84 patients (10.2%) had positive results after visual inspection after acetic acid applications. All patients with positive results after application of 3% acetic acid had colposcopy. In our study, 27 patients had major changes and/or unsatisfactory colposcopy and underwent diathermic loop resection for diagnostic and therapeutic purposes. Anatomo-pathological examination of the cone room revealed cervicitis in 22.2% of cases, flat condyloma in 7.4% of cases, CIN2 in 22.2% of cases, and CIN3 in 18.5% of cases. All the conizations were in sano. The postoperative course was simple. CONCLUSION: Cervical cancer is a real public health problem in developing countries. To do to human resources, developing countries like Senegal must put in place simple, inexpensive, effective strategies that must globally respond to “screen and treat”.

摘要： In this paper a semi-direct visual odometry and mapping system is proposed with a RGB-D camera,which combines the merits of both feature based and direct based methods.The presented system directly estimates the camera motion of two consecutive RGB-D frames by minimizing the photometric error.To permit outliers and noise,a robust sensor model built upon the t-distribution and an error function mixing depth and photometric errors are used to enhance the accuracy and robustness.Local graph optimization based on key frames is used to reduce the accumulative error and refine the local map.The loop closure detection method,which combines the appearance similarity method and spatial location constraints method,increases the speed of detection.Experimental results demonstrate that the proposed approach achieves higher accuracy on the motion estimation and environment reconstruction compared to the other state-of-the-art methods. Moreover,the proposed approach works in real-time on a laptop without a GPU,which makes it attractive for robots equipped with limited computational resources.

摘要： 本发明公开了一种40000吨自卸船C‑LOOP桅屋翻身工装及翻身工艺，包括底座，所述底座的两侧均设有桅屋夹持机构，所述桅屋夹持机构关于底座对称设置，所述底座的竖向截面形状为直角三角形，所述桅屋夹持机构包括水平固定在底座侧面的液压缸和一端设置在液压缸内的活塞杆，所述液压缸外接液压机，所述活塞杆的另一端固定有连接块，所述连接块的上方设有摆动块，所述摆动块的底端与连接块铰接，所述液压缸的上方还设有与底座固定连接的固定块，所述固定块的远离底座的一端设有凹口，所述凹口内设有横向设置的定位杆，所述摆动块穿过凹口且套设在定位杆上，所述摆动块的顶端铰接有夹紧块。本发明提供的工装安全稳定、操作简单、省时高效。

摘要： 一种使用拉氏图增强Loop区域结构的蛋白质结构预测方法，首先，根据目标蛋白质的序列信息以及残基类型获得相对应的拉氏图；其次，使用片段长度为3和9的片段组装分别在不同阶段对构象空间进行搜索，片段长度的不同有利于构象的采样多样性；然后，在第四阶段中加入了Monte Carlo方法，提高了算法搜索构象空间的能力；最后通过局部扰动阶段，对构象的Loop区域进行增强，使用了片段库以外的信息，有效地增强了构象的多样性，通过对Loop区域的残基的结构进行增强，还可以减小构象搜索空间，从而获得更多近天然态的构象。本发明采样能力较好、预测精度较高的使用拉氏图增强Loop区域结构的蛋白质结构预测方法。

摘要： 本发明公开了一种PCV2Loop EF区的突变体、引物及其制备方法和应用，PCV2Loop EF区的突变体，其Loop EF区第133位丙氨酸形成供外源表位替换和/或插入的可突变位点以便在体外组装成完整的VLPs。电镜结果表明，Loop EF中第133位氨基酸的突变不影响VLPs组装，表明PCV2VLPs Loop EF区展示外源抗原表位具有可行性。为Loop EF区结构功能研究奠定基础，同时也为展示外源表位构建嵌合型多价疫苗研究提供重要的实验依据。

摘要： 一种基于Loop区域高斯扰动的群体蛋白质结构预测方法，首先，通过种群初始化得到全局搜索的构象；然后通过交叉操作，交叉种群中个体Loop区域的部分；其次，对交叉后的种群和初始种群合并到一起挑选出能量较小的个体，使用高斯分布的二面角来对构象的Loop区域扰动，并使用玻尔兹曼概率判断是否接收；最后使用聚类算法对输出的最后一代种群聚类，得到最终的蛋白质三级结构。本发明提供一种预测精度较高的基于Loop区域高斯扰动的群体蛋白质结构预测方法。

摘要： 本实用新型公开了天线技术领域的一种双LOOP走线形式的宽频内置天线，包括LOOP天线主体，为单馈双地走线，包括LOOP回路一以及LOOP回路二；弹脚，包括中间馈点、右边地脚和左边地脚。在LOOP回路一的内部形成一个小的LOOP回路二走线，左边地脚走线作为寄生臂，满足高频；本实用新型设计的双LOOP走线形式的宽频内置天线其天线面积相对较小，走线充分利用支架表面，通过在LOOP天线内部走线与外部的走线耦合形成波形，控制缝隙大小和走线宽度，长度调整波形带宽和回波损耗。

摘要： 本实用新型公开一种新型LOOP天线，包括天线辐射体、馈地点、馈电点；所述天线辐射体包括第一谐振分支、第二谐振分支、第三谐振分支、接地分支、接电分支；所述接地分支和接电分支平行间隔布置，馈地点布置于接地分支的端部表面，馈电点布置于接电分支的端部表面；所述第二谐振分支的一端经第一谐振分支与接地分支连接，第二谐振分支的另一端从接地分支和接电分支之间穿过并半包裹接电分支后，经第三谐振分支与接电分支连接；所述馈地点处还设有天线开关。本实用新型设计合理、结构简单、覆盖频段广，且可通过开关调谐技术，自动切换天线频段以满足性能要求，使用方便。

摘要： 本发明公开了一种基于loop区域改造的褐藻胶裂解酶突变体及其应用，属于基因工程技术领域。本发明基于褐藻胶裂解酶的结构推测，采用结构序列分析方法，确定对催化域附近的loop区域进行改造，并通过定点突变和组合突变进行改造，得到对PolyG片段具有较高的降解能力的突变体；将亲本褐藻胶裂解酶氨基酸序列中位于催化域附近的loop区205位、210位突变为酪氨酸，将褐藻胶裂解酶对底物的偏好性由M转变为G，酶活6100U/mL，稳定性得以提高。

摘要： 本发明涉及一种R‑loop高通量建库和检测方法，以及相应的试剂盒。所述试剂盒中的融合蛋白由结合蛋白HBD与MNase核酸酶或Tn5转座酶连接构成。本发明所述所述R‑loop高通量建库和检测方法，可以实现原位活性R‑loop检测，并可以提高建库效率，降低文库背景，提高R‑loop检测技术的准确性，并简化R‑loop检测流程。

摘要： 本发明公开一种通过bypass电路提升loop分支预测算法准确率的方法，三个分别进入流水线的pc，在if0阶段取到的pc1进入混合分支预测器，pc1在loop中发生命中，用寄存器对pc1进行寄存；if1阶段得到分支预测信息，if2阶段在混合分支预测器中经过比较得到预测结果，把if2阶段预测结果寄存，同理pc2和pc1；pc3进入到if1阶段后和pc1、pc2寄存的PC值比较，等于pc1则通过bypass电路把pc1预测结果旁路到if1使用；等于pc2则通过bypass电路把pc2预测结果旁路到if1使用；都不相等且在loop中命中则把pc2预测结果覆盖pc1预测结果，pc3预测结果覆盖pc2预测结果并把pc2覆盖pc1、pc3覆盖pc2。

摘要： 本发明涉及一种c‑Src SH3 RT‑loop作为靶点用于抗血栓。具体地，本发明提供一种c‑Src SH3 RT‑loop拮抗剂的用途，用于制备组合物或制剂，所述组合物或制剂用于：(a)干扰整合素β3和c‑Src的相互作用；(b)抑制血小板在固相纤维蛋白原上的伸展；(c)抑制血小板的聚集和/或粘附；和/或(d)预防和/或治疗血栓。本发明首次发现以c‑Src SH3结构域的RT‑loop区域为靶点的药物组合或制剂能够有效地治疗血栓性疾病且不增加出血风险。