Application of Morphological Filter in Rosette Scanning Sub-Imaging System

To restore the sub image in a rosette scanning system and provide target recognition system with a low distorted image, the sub image is processed with morphological filters. Morphological filter can process rosette scanning sub images more effectively. It can restore the original area and shape of an object effectively, and keep the energy information of the object. To process sub images got by a rosette scanning system, morphological filter is more effective than traditional low pass filter.

Estimation of IFOV of Rosette Scan System

The methods of estimating the minimum allowed value of IFOV (instantaneous field of view) of the detector in a rosette scan system are investigated. The common method for the estimation of IFOV is described. A new method which uses the maximum distance between two neighboring petals as the estimated value of IFOV is developed and a comparison between the common method and the new method is given. It is concluded that the minimum allowed value of IFOV of rosette scanning is over estimated by the common method while this value can be calculated accurately with the new method.

Study on Curative Effect of Perforated Injection of Zinc-ammonia Complex on Rosette Disease of Fruit Tree

[ Objective ] The paper was to explore a kind of zinc preparation suitable for injection on trees with fast, efficient and safe cure effect on physiological disease of zinc deficiency. [Method] Taking three years old apple, pear, peach and grape trees as the materials, the author studied the absorption condition of these trees to six kinds of zinc substances and their security. The sealed curative effects of the injected zinc substances which were harmful and could be absorbed steadily by the fruit trees against rosette disease were studied. [ Result] The results of absorption condition and security experiments showed that only zinc-mmnonia complex could be absorbed steadily and safely throughout four seasons. When apple, pear, peach and grape trees affected by rosette disease were injected with zinc- ammonia complex, the leaves of those trees started to grow obviously after 10 d; the internodes of diseased branches elongated, the leaves turned bigger, and the ap- pearance of branches became normal after about 25 d. [ Conclusion] The curative effect of perforated injection of zinc-ammonia complex on fruit tree rosette disease was remarkable. The results also provided a new way for the cure of deficiency diseases of other trace elements.

Hole-drilling method using grating rosette and Moire interferometry

The hole-drilling method is one of the most wellknown methods for measuring residual stresses. To identify unknown plane stresses in a specimen, a circular hole is first drilled in the infinite plate under plane stress, then the strains resulting from the hole drilling is measured. The strains may be acquired from interpreting the Moire signature around the hole. In crossed grating Moire interferometry, the horizontal and vertical displacement fields （u and v） can be obtained to determinate two strain fields and one shearing strain field. In this paper, by means of Moire interferometry and three directions grating （grating rosette） developed by the authors, three displacement fields （u, v and s） are obtained to acquire three strain fields. As a practical application, the hole-drilling method is adopted to measure the relief strains for aluminum and fiber reinforced composite. It is a step by step method; in each step a single laminate or equivalent depth is drilled to find some relationships between the drilling depth and the residual strains relieved in the fiber reinforced composite materials.

Direct-Ink-Writing Printed Strain Rosette Sensor Array with Optimized Circuit Layout

The full-field multiaxial strain measurement is highly desired for application of structural monitoring but still challenging,especially when the manufacturing and assembling for largearea sensing devices is quite difficult.Compared with the traditional procedure of gluing commercial strain gauges on the structure surfaces for strain monitoring,the recently developed Direct-Ink-Writing(DIW)technology provides a feasible way to directly print sensors on the structure.However,there are still crucial issues in the design and printing strategies to be probed and improved.Therefore,in this work,we propose an integrated strategy from layered circuit scheme to rapid manufacturing of strain rosette sensor array based on the DIW technology.Benefit from the innovative design with simplified circuit layout and the advantages of DIW for printing multilayer structures,here we achieve optimization design principle for strain rosette sensor array with scalable circuit layout,which enable a hierarchical printing strategy for multiaxial strain monitoring in large scale or multiple domains.The strategy is highly expected to adapt for the emerging requirement in various applications such as integrated soft electronics,nondestructive testing and small-batch medical devices.

Damage-Monitoring Forward Equivalent-model Construction of Rosette Eddy Current Sensors

结构损伤监测对于保证结构安全是极其重要的。针对金属螺栓连接结构中螺栓孔位置处的裂纹损伤定量监测需求,在Goldfine等人的基础之上,该文提出一种花萼状涡流传感器,构建了传感器损伤监测正向等效模型并通过搭建实验装置验证损伤监测正向等效模型准确性并进行误差分析。相对于传统的多层导电结构谐波涡流场的积分/级数解析模型,构建的损伤监测正向等效模型考虑了在高频激励下导线电流密度分布的集肤效应,并可用于互感式涡流传感器建模。实验结果表明：对测量结果经空气标定后,传感器贴于2A12-T4标准试件表面时的模型计算结果和实验结果较为吻合,第1、2和3感应通道的幅值比量模型计算结果误差随频率变化均在10%以内,第4感应通道的幅值比量模型计算结果误差随频率变化在15%以内。

INFLUENCE OF POLYACTIN A ON THE THROCYTE TUMOR－ERYTHROCYTE ROSETTE FORMING OF SARCOMA 180 BEARING MICE

Three tests were used to assay the tumor-erythrocyte rosette forming rate for Sarcoma 180 (S180) bearing mice after abdominal injection or polyactin A.The results showed that the forming rates of the direct tumor-erythrocyte rosette,enhanced tumor-erythrocyte rosette, cooperative tumor-erythrocyte rosette in the tumor bearing mice group decreased by 22.07 %,25.87% and 24. 90% respectively,compared with those in the normal group. he difrerences were all remarkable(P<0. 01).After injection of polyactin A into the tumor bearing mice,the forming rates increased by 11. 64%, 16. 77% and 13.56% respectively.The dirference was also remarkable. These suggest that polyactin A can improve the adherence of erythrocytes and serum enhancing factors to tumor cells,and their cooperative adherence, thus strengthen the immune function of erythrocytes.

Fiber Bragg Grating Strain Rosette

In this paper a Fiber Bragg Grating (FBG) Strain Rosette is designed, developed and tested. Traditional FBGs measure strain in only one direction. However, in-plane strain at a point consists of two normal strains and one shear strain. Hence a FBG strain rosette needs to be designed. The sensing principle of FBGs as a strain and temperature sensor and fundamental principles of strain transformation and strain gage rosettes are discussed.FBG strain rosettes are fabricated and embedded in two materials namely, Silicon Gel RTV 146-9 and Glass Fiber Composite Laminates. Experiments were conducted on the FBG strain rosette structures that were embedded in Silicon Gel (RTV 146-9). Initial findings from the experiments as well as preferred embedding material are presented.

血府逐瘀汤对狼疮性肾炎患者胸腺肽β4及Ea-RFC的影响

目的探讨血府逐瘀汤辅助治疗狼疮性肾炎(LN)的效果及对患者胸腺肽β4及Ea花环细胞(Ea-RFC)形成率的影响。方法选取河北北方学院附属第二医院2020年1月至2021年6月收治的60例狼疮性肾炎患者,按随机数字表法分为观察组(行血府逐瘀汤联合泼尼松与环磷酰胺治疗)30例与对照组(行泼尼松与环磷酰胺治疗)30例,治疗18个月。观察组治疗后临床效果、中医症状、胸腺肽β4表达、Ea-RFC形成率、肾功能及不良反应。结果观察组治疗总有效率为96.67%,高于对照组的80.00%,差异有统计学意义(P<0.05)。治疗后,观察组纳少腹胀、腰膝酸软、面色不华、口黏口苦等中医症状积分低于对照组,差异有统计学意义(P<0.05)。治疗后,观察组红细胞沉降率、血清肌酐及胸腺肽β4表达低于对照组,Ea-RFC形成率高于对照组,差异有统计学意义(P<0.05)。治疗后,观察组不良反应发生率与对照组比较差异无统计学意义(P>0.05)。结论血府逐瘀汤辅助治疗LN患者疗效确切,能减少患者体内胸腺肽β4表达,提高Ea-RFC,改善肾功能,安全性较高。

菊形团形成型胶质神经元肿瘤影像学表现和临床病理对照

菊形团形成型胶质神经元肿瘤(RGNT)是由胶质细胞和神经元成分组成的原发性低级别肿瘤,表现出双相分化的病理特征,影像学表现能够反映其基本的病理改变。肿瘤强化方式与瘤体实性区分布及血供密切相关,多模态MRI影像检查对于准确诊断RGNT至关重要。综述RGNT的影像学特点、病理特征及与相关疾病的鉴别诊断。

中枢神经系统多层菊花团的胚胎性肿瘤诊疗研究进展

近年随着脑肿瘤分子生物学的发展,具有不同组织形态的富含神经毡和真菊形团的胚胎性肿瘤、髓上皮瘤及室管膜母细胞瘤归属于同一分子实体,统称为多层菊花团的胚胎性肿瘤(embryonal tumor with multilayered rosettes,ETMR)。这些肿瘤的罕见性和更新给诊断和治疗带来了挑战。文章主要对ETMR的临床表现、影像特点、诊断及临床研究情况进行回顾分析,以期为临床管理提供指导帮助。对ETMR的临床特点及诊断治疗的研究情况进行文献综述。典型的组织学特点联合分子生物学改变,可以更好地诊断ETMR。目前ETMR的治疗建议主要基于小型、主要是回顾性患者队列的数据。普遍推荐最大安全切除,适应年龄和风险的放疗、化疗为ETMR主要治疗手段,早期放疗可能改善预后。

肾上腺皮质球状带细胞的电兴奋性与醛固酮分泌:离子通道的作用

醛固酮是肾上腺皮质球状带(ZG)细胞产生的类固醇类激素,对体液电解质平衡和血压稳定起着关键调控作用。醛固酮生成是一个钙离子依赖性的过程,离子通道在这一过程中扮演着关键角色。临床上发现的原发性醛固酮增多症大多与离子通道的突变有关。最近ZG细胞独特的rosette结构与其电兴奋性的关系引起了更多研究兴趣。阐明rosette与ZG细胞电兴奋性以及醛固酮分泌之间的关系,有助于更深入地了解调节醛固酮分泌的机制,为原发性醛固酮增多症的发病机制提供新见解。

Post-fire recovery of Puya raimondii, vegetation and birds in the puna of Huascarán National Park, Perú

A large fire of 233 ha in Huascarán National Park in Peru provided an opportunity to compare plant and bird responses in burned and nearby unburned zones of the puna. Heights and live diameters of flagship Puya raimondii rosettes(assigned to four broad developmental phases), plant communities(66 species in 24 families and nine growth forms) and bird communities(77 species in six trophic guilds) were monitored after the fire. Although no mortality was observed, Puya raimondii plants were affected by the fire, losing approximately 60% of their photosynthetic area across all developmental phases, but recovered quickly during the first two years after fire. The comparison of Puya rosette recovery after fire was complicated by the changes in live rosette diameter for unburned plants, which showed plasticity of photosynthetic area linked to seasonal and annual fluctuations in precipitation in this relatively dry environment(decreased by 26% for mature adult plants over the study period). Fire caused an immediate change in the density, biomass and composition of vegetation. Although the species present remained similar, their abundances changed significantly immediately after the fire, with notable reductions in dominant tussock grasses. This provided opportunities for other plants, resulting in higher postfire diversity of plant species, genera, families and growth forms. In turn, the changes in vegetation after fire affected the composition of birds according to their trophic guild. Granivores largely disappeared,generalists were mostly unaffected, and other guilds showed a more complex response. As the vegetation recovered, most displaced birds returned within approximately one year.

伴多层菊形团形成的胚胎性肿瘤9例临床病理特征

目的探讨伴多层菊形团形成的胚胎性肿瘤(embryonal tumor with multilayered rosettes,ETMR)的临床病理学特征及分子特征。方法收集9例ETMR的临床资料及生存随访数据,采用免疫组化EnVision两步法检测Syn、LIN28A、vimentin、GFAP、Olig2、S-100、INI1、H3K27me3及Ki67等表达,使用FISH检测C19MC基因,并复习相关文献。结果9例ETMR中男性6例,女性3例,男女比为2∶1;幕上7例,幕下2例,其中位于脑干者影像学表现类似弥漫性内生型桥脑胶质瘤(diffuse intrinsic pontine glioma,DIPG)。组织学形态表现为伴广泛神经毡和真性菊形团的胚胎性肿瘤4例,室管膜母细胞瘤3例,髓上皮瘤2例。免疫表型:LIN28A、Syn、vimentin均阳性,GFAP、CK不同程度阳性,BRG1、INI1和H3K27me3均表达保留,Ki67增殖指数为40%~70%。8例FISH检测出C19MC基因扩增。4例全切肿瘤,2例部分切除肿瘤,1例手术活检,2例手术方式不详;7例手术后辅助治疗。4例发生脑脊膜播散,但无颅外转移。随访时间0~36个月,总生存期36个月,中位生存期10个月,8例死亡。结论ETMR多发生于大脑半球,少数病例可发生于脑干并表现为DIPG的影像学特点,组织学形态多样,基因变异以C19MC基因扩增常见;肿瘤生物学行为高度侵袭性,预后极差,组织学形态联合LIN28A免疫组化检测及C19MC基因检测有助于诊断及鉴别诊断。

内镜下黏膜切除术对胃肠道息肉患者红细胞免疫功能及预后的影响

目的 分析胃肠道息肉予以内镜下黏膜切除术对其预后和红细胞免疫功能的影响。方法 非随机选取2022年4月—2023年2月哈尔滨嘉润医院收治的82例胃肠道息肉患者为研究对象,根据不同手术方法分为对照组和研究组,各41例,研究组予以内镜下黏膜切除术疗法,对照组予以内镜下电切除术疗法,分析两组的治疗效果、不良反应发生情况、术前24 h和术后24 h的红细胞免疫功能指标变化。结果 研究组治疗总有效率为97.56%(40/41),高于对照组的78.05%(32/41),差异有统计学意义(χ^(2)=7.289,P<0.05)。研究组不良反应发生率低于对照组,差异有统计学意义(P<0.05)。术前24 h两组红细胞免疫功能指标比较,差异无统计学意义(P均>0.05);术后24 h研究组红细胞免疫功能指标均优于对照组,差异有统计学意义(P均<0.05)。结论 胃肠道息肉予以内镜下黏膜切除术治疗更安全有效,对于红细胞的免疫功能影响较小。

不同剂量环磷酰胺诱导正常小鼠免疫抑制的对比研究

目的观察不同剂量环磷酰胺对正常小鼠免疫抑制的影响。方法采取不同的时间给予正常小鼠腹腔内注射小同剂量的环磷酰胺(CY),观察对小鼠免疫学指标的影响。结果正常小鼠腹腔注射20、80、100mg/kg的CY后,各剂量组均出现不同程度的免疫抑制。结论给予正常小鼠腹腔注射20、80、100mg/kg的CY,可建立免疫抑制模型,并且连续3d腹腔注射剂量为80mg/(kg·d)1CY的效果盛明显。

丹皮酚注射液增强免疫功能的实验研究

丹皮酚在低浓度时（１０～１５ｍｇ／ｋｇ）能够显著提高外周血酸性α－醋酸萘酯酶（ＡＮＡＥ）阳性淋巴细胞百分率和白细胞移行抑制因子的释放，从而增强机体细胞免疫功能：并且能够显著改善外周血中性白细胞对金黄色葡萄球菌的吞噬作用，而增强机体非特异性免疫功能。丹皮酚对于脾脏特异性玫瑰花环形成细胞的比率虽有所提高，但在统计学上意义不显著。

中草药添加剂对山羊泌乳性能的影响

本添加剂由黄芪、当归、川芎、王不留行等中草药组成。为观察其增乳作用,探讨其作用机理,我们对15只泌乳50天左右的奶山羊(试验组8只,对照组7只)进行了试验。将添加剂拌入精料,阶段性饲喂。在添加前后,分别测定了乳脂、乳糖、乳蛋白及乳中环核苷酸(cGMP和cAMP)的含量;进行了外周血液E玫瑰花环试验,包括总E(E_t)花环和活性E(E_a)花环试验;检查了隐性乳房炎发病情况;记录了产乳量。结果发现,本添加剂增乳效果明显,添加期间每只羊每天平均增乳0.38kg,乳成分无明显变化。试验组乳中cAMP和cGMP含量明显高于对照组,并与产乳量显著相关。添加后试验组E_a和E_t花环形成率显著高于对照组(P<0.01),而隐性乳房炎阳性乳区明显下降。因此认为,本添加剂可能通过影响机体cAMP和cGMP水平,增强其调节能力,不仅使乳腺代谢活动加强,乳量上升,而且使机体细胞免疫水平提高,抗病能力增强,从而保证机体泌乳性能的进一步发挥。

钻孔法中光栅应变花与电阻应变花测量变形的比较

针对钻孔法测量残余应力方法中变形测量存在的误差,提出用光栅应变花测量钻孔所释放的残余应变.应用光栅应变花测量应变,既可以测量孔到边3个方向上的线应变,又可以逐点测量到整个应变场,避免了电阻应变花因难以定位、平均应变等带来的误差.通过对已知应力状态试件的测试及与理论计算比较,得到了比较满意的结果,证明该方法是可行的.