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21.
Kelsey A. Johnson James Sutherland-Smith Trisha J. Oura Amy F. Sato Bruce Barton 《Veterinary radiology & ultrasound》2023,64(1):86-94
Evaluation of brain disease in veterinary patients uses a wide variety of MRI sequences. A shortened protocol that maintains consistency of interpretation would reduce radiologist reporting time, patient anesthetic time, and client cost. The aims of this retrospective, methods comparison, observer agreement study were to evaluate whether abbreviated MRI protocols alter differential diagnoses and recommendations compared to our institution's standard protocol; evaluate interobserver agreement on standard brain MRIs; and assess whether differential diagnoses change after postcontrast images. Normal and pathologic canine and feline brain MRIs were retrieved from hospital archives. Three protocols were created from each: a 5-sequence noncontrast enhanced Fast Brain Protocol 1 (FBP1); a 6-sequence contrast-enhanced Fast Brain Protocol 2 (FBP2); and an 11-sequence standard brain protocol (SBP). Three blinded veterinary radiologists interpreted FBP images for 98 cases (1 reader/case) and SBP images for 20 cases (3 readers/case). A fourth observer compared these interpretations to the original MRI reports (OMR). Overall agreement between FBPs and OMR was good (k = 0.75) and comparable to interobserver agreement for multiple reviews of SBP cases. Postcontrast images substantially altered conclusions in 17/97 cases (17.5%), as well as improved interobserver agreement compared to noncontrast studies. The conclusions reached with shortened brain protocols were comparable to those of a full brain study. The findings supported the use of a 6-sequence brain MRI protocol (sagittal T2-weighted [T2w] TSE; transverse T2w turbo spin echo fluid-attenuated inversion recovery, T2*-weighted gradient recalled echo, T1-weighted spin echo, and diffusion weighted imaging/apparent diffusion coefficient; and postcontrast transverse T1-weighted spin echo) for dogs and cats with suspected intracranial disease. 相似文献
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内窝孔式棉花精量穴播轮的试验 总被引:2,自引:1,他引:2
目前,新疆棉花种植广泛采用半精量穴播轮,其原理是勺式取种,存在下种量大、重播率高、下种不均匀、后续工作量大等缺陷,已不适应当前棉花产业发展要求。气吸式精量穴播轮可实现一穴一粒,准确率高,但气吸式棉花穴播机结构复杂、造价高,对机具维护、使用者技能以及整地有较高要求。另外,作业时拖拉机须保持高速运转,能源消耗大,因而限制了气吸式精量穴播轮的普及和推广。为此,将内窝孔取种原理应用于棉花精量取种,介绍了内窝孔式穴播轮的结构和工作过程,并进行了排种试验和分析。由试验得知,内窝孔式取种原理可用于新疆棉花的精量取种。 相似文献
24.
基于模糊层次分析法的农产品加工企业风险评价研究 总被引:1,自引:0,他引:1
风险评价是风险管理的重要阶段,针对农产品加工企业特点,提出了一种基于模糊层次分析法的农产品加工企业风险评价方法。该方法初步解决了农产品加工企业风险管理中的关键问题——风险因素的识别。以某农产品加工公司为例,介绍了该方法的应用过程。 相似文献
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新农村建设是一项复杂的系统性工程,有无充足的资金支持决定了新农村建设的成败,该文分析了现有的主要筹资渠道的问题,提出了如何完善现有筹资渠道,广开源头,为新农村建设提供不竭的动力支持的建议。 相似文献
28.
Punnawich Yenjit Montree Issarakraisila Warin Intana Kan Chantrapromma 《Postharvest Biology and Technology》2010,55(2):129-132
Areca catechu L., a member of the Palmaceae family, is one of the most commonly used drugs in the world. Compounds obtained from the hexane, ethyl acetate and methanol extracts of the pericarp of A. catechu L. were assessed in vitro and in mango fruit for antifungal activity against Colletotrichum gloeosporioides Penz. In vitro studies also indicated that three triterpenes, namely fernenol (fern-9(11)-en-3α-ol), arundoin (fern-9(11)-en-3α-ol ME), and a mixture of stigmasterol and β-sitosterol, and one fatty acid, lauric acid, could inhibit the mycelial growth of C. gloeosporioides with EC50 values of 36.7, 47.5, 56.7 and 111.5 mg L?1, respectively. Furthermore, fernenol, arundoin, and the mixture of stigmasterol and β-sitosterol highly inhibited spore germination and germtube elongation. Mango fruit studies suggested that fernenol, arundoin and the mixture of stigmasterol and β-sitosterol were significantly more effective than benomyl for controlling postharvest anthracnose disease when used at 100 and 200 mg L?1. 相似文献
29.
Hashimoto Y Ohki H Sato F Yanaihara N Iwanaga T 《The Japanese journal of veterinary research》2001,49(1):3-17
Chromogranin A (CgA) is an acidic glycoprotein that is co-stored with hormones or neurotransmitters in granular components of endocrine cells and neurons, and released together with them in response to adequate stimulation. In addition to acting as a packaging protein, CgA functions as a precursor molecule that yields several bioactive peptides by proteolytic cleavage. The purpose of this study is to elucidate how different the processing of CgA is among endocrine tissues by immunostaining using multiple region-specific antisera, and to evaluate the availability of region-specific antisera. When various endocrine organs of rats were immunostained with four region-specific antisera against rat CgA (CgA 1-28, 94-130, 296-314, and 359-389), all amine/peptide-secreting endocrine tissues except the pineal body were stained positively. The adrenal medulla and gastric endocrine cells were equally intensely immunoreactive to all four antisera, while the other endocrine tissues, represented by pancreatic islets, showed different staining patterns depending on the antiserum. These results suggest that the processing of CgA differs from tissue to tissue. An antiserum against horse CgA 335-365, corresponding to rat CgA 359-389 which shows the highest concentration in the plasma and urine of the rat, again stained all endocrine tissues of the horse except the pineal body. Therefore, the anti-horse CgA 335-365 serum is useful for immunohistochemical survey of horse CgA, and may make possible the establishment of a CgA assay system for the measurement of CgA in the plasma, urine and saliva. 相似文献
30.
Yamada K Nakagawa M Kato T Shigeno S Hirose T Miyahara K Sato M 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2001,63(1):51-54
The usefulness of magnetic resonance (MR) is already established, but it has a disadvantage of requiring a long scanning time. A short-time examination is more or less needed so as to be more practical in veterinary clinics. A protocol of the short-time MR examination was devised based on parameters determined, and validity of the protocol was assessed through the diagnosis of clinical cases with intervertebral disc diseases. With this protocol, it was possible to complete an MR examination for the spine within 15 min. The MR images and myelographic findings were correlated well in this study, suggesting the short-time protocol of MR examination can be used in the clinical diagnosis of spinal diseases. 相似文献