木材缺陷图像的灰度形态滤波     

王国柱  周海宾  李文彬  撒潮 《木材工业》2005,19(5):17-19

介绍数学形态学中的灰度形态滤波方法,给出对木材缺陷图像进行闭、开运算处理后的仿真图像实例,利用木材缺陷图像截面灰度分布对处理效果进行分析.结果表明:采用灰度形态滤波方法对木材缺陷图像进行滤波处理,可有效去除木材缺陷图像中的噪声,改善图像的视觉效果,提高后期缺陷边缘检测的精确度,从而证明该方法对木材缺陷图像进行滤波处理是可行的.  相似文献   

Necrotizing enterocolitis and death in a goat kid associated with enterotoxin (CPE)-producing Clostridium perfringens type A          下载免费PDF全文

Miyakawa ME  Saputo J  Leger JS  Puschner B  Fisher DJ  McClane BA  Uzal FA 《The Canadian veterinary journal. La revue veterinaire canadienne》2007,48(12):1266-1269

A goat kid died after being depressed for several days. No significant gross abnormalities were observed at postmortem examination, while histopathological analysis revealed diffuse necrotizing enterocolitis. Isolation of Clostridium perfringens type A secreting enterotoxin (CPE) and presence of CPE in the small intestine suggest that CPE contributed to the death of this kid.  相似文献   

Pharmacokinetics of sodium and trihydrate amoxicillin in sheep after intravenous and intramuscular administration     

Fernandez C  Modamio P  Mestorino N  Errecalde JO  Mariño EL 《Journal of veterinary pharmacology and therapeutics》2007,30(3):263-266

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The Effect of Examiner Variability on Multiple Canine Stifle Kinematic Gait Collections in a 3‐Dimensional Model          下载免费PDF全文

Bryan T. Torres DVM  DACVS‐SA  Peter J. Gilbert BVSc  MVetSc  DACVS‐SA  Lisa R. Reynolds BS  RVT  Yang‐Chieh Fu PhD  Judith A. Navik MS  Andrew Sornborger PhD  Steven C. Budsberg DVM  MS  DACVS 《Veterinary surgery : VS》2015,44(5):581-587

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Organochlorinated compounds and selected metals in waters and soils from Doñana National Park (Spain)     

M. A. Fernandez  L. M. Hernandez  M. J. Gonzalez  M. C. Tabera 《Water, air, and soil pollution》1992,65(3-4):293-305

A study on contamination levels by organochlorinated compounds (pesticides and PCBs) and heavy metals (Hg, Cd, Pb, Cu and Zn) in Doñana National Park (Spain) area and its surrounding region has been carried out. Residue levels of xenobiotics were determined in water and soils samples from seventeen sites selected through the park and nearest surrounding farm lands affecting to the inner Park. Also we analyzed some stations along the Guadiamar Basin in the north of Doñana region to determined the movement and influence of one mine situated over 40 km away, in Aznalcóllar, where the commercial expoitation of pyrites ores rich in Zn, Pb and Cu is being operated.  相似文献   

Pulmonary mycobacteriosis caused by Mycobacterium intracellulare in a Tasmanian devil (Sarcophilus harrisii)     

SA Michael  CR Sangster 《Australian veterinary journal》2010,88(7):280-282

The health of captive Tasmanian devils (Sarcophilus harrisii) is currently of increased interest because wild populations are being decimated by the spread of devil facial tumour disease. This report describes the pathology of an aged captive Tasmanian devil that had a pulmonary mycobacterial infection caused by Mycobacterium intracellulare in addition to multiple neoplastic processes.  相似文献   

Resistance of Spodoptera frugiperda (Lepidoptera: Noctuidae) to spinetoram: inheritance and cross‐resistance to spinosad     

Ewerton C Lira  Anderson Bolzan  Antonio RB Nascimento  Fernando SA Amaral  Rubens H Kanno  Ingrid S Kaiser  Celso Omoto 《Pest management science》2020,76(8):2674-2680

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Extra Soil Fertilization of Mother Plants Increases Botanical Seed Yield But Not Long-Term Germination in Wild <Emphasis Type="Italic">Solanum</Emphasis> (potato) Species     

John Bamberg  Charles Fernandez  Alfonso del Rio 《American Journal of Potato Research》2017,94(6):583-587

Potato has about 100 wild species relatives that are multiplied in the form of botanical seed populations by genebanks, and distributed for use in research and breeding, so factors that affect long term seed germination are of interest. In 1987 the US Potato Genebank conducted routine seed multiplication on 127 populations of 31 species as greenhouse-grown potted plants. Half of the parent plants in each population were given two doses of liquid fertilizer in addition to the standard slow-release granular fertilizer which had been mixed into the medium for all plants. Plants with this extra liquid fertilizer application grew larger, and produced significantly more fruit and seeds. However, seeds from parents fertilized extra did not have improved seed weight or germination after 26 years of storage. We conclude that optimizing the fertilizer regime used on parent plants, while doubling the average seed yield, does not result in higher quality seeds.  相似文献   

Progress on role of exosomes derived from leukemia cells     

ZHANG Juan-juan  LI Rui-wei  HE Ji-gang  OUYANG Hong-mei  SA Ya-lian 《园艺学报》2017,33(12):2287-2292

Exosomes are bilayer-lipid membrane nanovesicle from almost all living cell types which are involved in intercellular substance transporting and signaling communication. Exosomes are 30~120 nm in diameter, can transfer bioactive molecules including DNA, RNA, microRNA, protein as well as lipids derived from parents' cells to recipient cells by body fluids, and specifically influence their physiological or pathological conditions. Leukemia is due to malignant proliferation of hematopoietic stem and progenitor cells. It was reported that leukemia cells derived exosomes play a key role in disease progression, drug resistance, and predict prognosis. This paper will outline the role of exosomes derived from leukemia cells and provide important information to help explore the molecular pathogenesis, biomarker as well as therapeutic target of leukemia.  相似文献   

Rapid dispersion of escaped meagre (Argyrosomus regius) from a coastal Mediterranean fish farm          下载免费PDF全文

Pablo Arechavala‐Lopez  Ingebrigt Uglem  David Izquierdo‐Gomez  Damian Fernandez‐Jover  Pablo Sanchez‐Jerez 《Aquaculture Research》2017,48(4):1502-1512

Meagre (Argyrosomus regius) is an emerging species in aquaculture considered a locally absent species in the Western Mediterranean. Little is known about meagre escape incidents from farms. To evaluate escape impacts and develop mitigation measures, knowledge about the behaviour of escaped meagre is necessary. In this study, a rapid dispersion of escaped meagre was observed following a simulated escape incident in a coastal Mediterranean farm, using acoustic telemetry (acoustic tag: AT) and mark‐and‐recapture techniques (external tag: ET). A small proportion of AT meagre (22.7%) remained within the farm boundaries 24 h after the simulated escape. A total of 84 meagre (9.2%) were captured by local trammel netters nearby the farm facility within the first 48 h after escape. Only two AT individuals (15.3%) were detected by acoustic receivers located in coastal areas within 2 days after dispersal from the farm and eight ET meagre (0.8%) were recaptured along the shoreline during the first week. Two AT individuals (15.3%) were considered to be dead by predation few hours after escape. The rest of the AT individuals (N = 6, 46.2%) left the facility alive, and they were never detected by receivers nor reported back by fishermen. Thus, our results highlight the necessity of establishing escape mitigation strategies at Mediterranean fish farms, i.e. recapture programmes 24–48 h after the escape incident in collaboration with local fishermen, to diminish potential impacts related to meagre escapees.  相似文献