INTRAVERTEBRAL DISC HERNIATION (SCHMORL'S NODE) IN FIVE DOGS

The herniation of intervertebral disc material into the vertebral body, known as Schmorl's nodes, is a well described disease process in man. Schmorl's nodes have not until now been described in the dog. This paper describes intravertebral disc herniation in the dog based on five patients taken from a retrospective study of dogs suspected of having cauda equina syndrome. The significance of intravertebral disc herniation in the dog at this time is that they indicate a disturbance in the vertebral endplate, they present definite radiographic signs, should be considered in patients with ostecohondrosis, and remain a possibls etiology for fibrocartilaginous emboli. Back pain is a common sign in people when Schmorl's nodes were the only pathologic findings. The common signs of palpatory pain in the lumbosacral region of the dogs in this report is noted but cannot be directly correlated at this time to the intravertebral disc herniation; however, it is suspected in two of the cases.     

罐底提离时的下节点应力计算

当安装于罐顶上的呼吸阀失灵，或罐内液体的汽化速度增大而又不能及时排放时，罐内的压力增高，部分罐底可能会离开基础而发生罐底提离现象。此时，在下节点处存在着较大的应力，甚至会造成油罐在下节蹼处的破坏。     

海狸鼠淋巴结的解剖及组织形态结构的初步研究

通过对健康成年海狸鼠淋巴结的初步研究发现 :海狸鼠的淋巴结被膜较薄 ,小梁不发达 ;淋巴小结数量较多 ,呈椭圆形 ,细胞排列密集 ,胞核染色较深 ,生发中心不明显 ,皮窦和髓窦相对发达。     

ULTRASONOGRAPHIC EXAMINATION OF ABDOMINAL LYMPH NODES IN THE DOG

Ultrasonography is a valuable diagnostic tool for examination of the abdomen. Normal lymph nodes are often indistinct during routine abdominal ultrasonographic examination. Lymph nodes altered by infiltrative or inflammatory processes may become sonographically visible due to enlargement and/or altered echogeńicity. A working knowledge of the anatomic distribution of lymph nodes and the scheme of lymphatic drainage is important for increasing the sensitivity and specificity of abdominal lymph node assessment during ultrasonographic examination.     

管网方程Jacobi矩阵的一维压缩存贮与管网图节点标号的优化

利用大型稀疏矩阵的处理技术,用一维数组压缩存贮管网方程F(H)=0的Jacobi矩阵J(H),并应用图论方法进行管网图节点标号的优化,以节省管网分析计算所需的计算机存贮量及计算时间.     

大豆子叶节高效再生系统的研究

为建立一个大豆子叶节高效再生体系用于大豆的遗传转化,以桂春豆1号、桂早2号、桂夏1号和桂夏豆2号4个大豆品种为材料,子叶节为外植体诱导丛生芽,再生完整植株.实验研究了大豆种子的消毒方法,基因型以及培养过程中植物激素的浓度等影响大豆子叶节再生的因素.结果表明在适宜的条件下,4个大豆品种的丛生芽分化率都可达到90％,丛生芽数基本都在4～6个范围内,4个大豆品种均为子叶节器官发生途径的理想基因型.最适合的种子灭菌方法是双氧水灭菌法;桂春豆1号和桂早2号的适宜芽诱导培养基为B5+ 6-BA 1.6 mg/L+ IBA 0.2 mg/L,桂夏1号和桂夏豆2号为B5 +6-BA 1.0 mg/L +IBA 0.2 mg/L;4个大豆品种的适宜丛生芽伸长培养基为1/2 MS+B5有机+GA3 0.5 mg/L;生根培养基为B5 +NAA0.5 mg/L+ 2.0 g/L活性炭.     

一类等距结点上的双周期整插值问题

给定结点组xk=kπ/σ(σ>0,k∈Z),对于正整数m1相似文献   

膜荚黄芪子叶节植株再生体系的建立

以膜荚黄芪无菌苗子叶节为外植体,建立了简单、高效和稳定的膜荚黄芪再生体系。结果表明:不定芽诱导的最适培养基是MS+6-BA 1.0mg/L+NAA 0.10mg/L,每个子叶节外植体平均出芽数为3个以上,再生频率达75.5%;生根最适培养基为1/2MS+IBA 0.5mg/L;移栽后成活率达75%以上。     

Combined decongestive therapy including equine manual lymph drainage to assist management of chronic progressive lymphoedema in draught horses

Equine chronic progressive lymphoedema (CPL) is a disabling disorder of draught horse breeds. Combined decongestive therapy (CDT) is the treatment of choice for lymphoedema in man and has been adapted for use in horses. Equine CDT, which includes manual lymph drainage (MLD) and subsequent bandaging with short stretch bandages, was expected to improve the signs of CPL in draught horses because CPL resembles primary lymphoedema in man. Five affected horses ‐ Gypsy cob (n = 1), Clydesdale (n = 1), Shires (n = 3) ‐ were included. Lesions were documented pre‐ and post treatment. Percentage volume loss of the distal legs was calculated using the disc model. Initial plans for daily CDT had to be adapted; intermittent treatment of Chorioptes infections required alternating between CDT and MLD in 4/5 horses. Concurrent pyoderma (1/5 horses) was treated throughout the study. Development of unrelated lameness (hoof abscess) allowed limited CDT treatment only in one horse. Marked softening of previously firm tissue indicated the change from ‘brawny’ to pitting oedema in 2/5 horses. Fibrotic nodules and folds in the pasterns became markedly softened and smaller in 2/5 horses. Skin surface notably improved in all horses: hyperkeratosis decreased, erosions and ulcerations healed completely and crusts disappeared. After 2 weeks, a mean volume reduction of 11.25% was seen, ranging from 4.75–21.74% and quality of movement improved. This pilot study documents evidence that CDT assists management of CPL. Current CPL management is limited to palliative treatments of secondary infections. Whilst not a permanent treatment, CDT offers a promising tool to manage horses with CPL, improving their quality of life and potential usefulness. More extensive and prolonged studies with a larger number of horses are warranted to evaluate the full potential of CDT.     

REPEATABILITY OF A PLANNING TARGET VOLUME EXPANSION PROTOCOL FOR RADIATION THERAPY OF REGIONAL LYMPH NODES IN CANINE AND FELINE PATIENTS WITH HEAD TUMORS

For canine and feline patients with head tumors, simultaneous irradiation of the primary tumor and mandibular and retropharyngeal lymph nodes (LNs) is often indicated. The purpose of this study was to assess the repeatability of a planning target volume (PTV) expansion protocol for these LNs. Two CT image sets from 44 dogs and 37 cats that underwent radiation therapy for head tumors were compared to determine LN repositioning accuracy and precision; planning‐CT (for radiation therapy planning) and cone‐beam CT (at the time of actual treatment sessions). Eleven percent of dogs and 65% of cats received treatment to their LNs. In dogs, the mandibular LNs were positioned more caudally (P = 0.0002) and the right mandibular and right retropharyngeal LNs were positioned more to the left side of the patient (P = 0.00015 and P = 0.003, respectively). In cats, left mandibular LN was positioned higher (toward roof) than the planning‐CT (P = 0.028). In conclusion, when the patient immobilization devices and bony anatomy matching are used to align the primary head target and these LNs are treated simultaneously, an asymmetrical PTV expansion that ranges 4–9 mm (dogs) and 2–4 mm (cats), depending on the directions of couch movement, should be used to include the LNs within the PTV at least 95% of the time.