高吞吐量协作防火墙的双向去冗余方法     

秦拯  欧露  张大方  Alex X. Liu 《湖南农业大学学报(自然科学版)》2013,40(1):93-97

针对协作防火墙中冗余规则会降低其吞吐量的问题,提出一种基于双向去冗余的高吞吐量协作防火墙优化方法.该方法通过比对协作防火墙中双方的防火墙规则,双向去除域内防火墙之间的冗余规则,提高整个协作防火墙的数据包过滤能力.仿真实验结果表明,该方法的冗余率达到了22.7%,提高了8.2%吞吐量,明显优于已有协作防火墙优化方法.  相似文献   

Mycotic dermatitis in a vagrant parti-coloured bat (Vespertilio murinus) in Great Britain     

Barlow A  Jolliffe T  Tomlin M  Worledge L  Miller H 《The Veterinary record》2011,169(23):614

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Characterization of Onthophagus sellatus as the major intermediate host of the dog esophageal worm Spirocerca lupi in Israel     

Gottlieb Y  Markovics A  Klement E  Naor S  Samish M  Aroch I  Lavy E 《Veterinary parasitology》2011,177(3-4):378-382

A total of 750 faecal samples of dairy calves at up to 2 months of age kept in various housing systems were screened for Cryptosporidium spp. infection using the aniline-carbol-methyl violet staining method. DNA was extracted from Cryptosporidium positive samples and from 150 randomly selected microscopically negative samples. Nested PCR was performed to amplify the partial SSU rRNA gene of Cryptosporidium that was subsequently digested by SspI, VspI and MboII restriction enzymes to determine the present Cryptosporidium species and genotype. In addition, the samples characterized as Cryptosporidium parvum were subsequently analyzed at the GP60 gene to determine the distribution of zoonotic subtypes. Sequence analyses and RFLP identified C. parvum in 137, Cryptosporidium andersoni in 21 and Cryptosporidium bovis in 3 samples. Neither mixed infections nor Cryptosporidium ryanae was detected. Sequencing of the GP60 gene from C. parvum-positive samples revealed all five subtypes of family IIa (A15G2R1, A16G1R1, A22G1R1, A18G1R1, and A15G1R1). The obvious management-associated distribution of Cryptosporidium spp. was demonstrated. Direct contact with adult animals was found to be a risky factor for C. andersoni and C. bovis infection. IIaA15G2R1 and IIaA16G1R1 were detected as major subtypes, whereas only the IIaA16G1R1 subtype was found in animals kept in boxes. Three of the five detected subtypes were previously associated with human cryptosporidiosis, and moreover, the IIaA15G1R1 subtype, previously reported in humans only, was detected in calves for the first time.  相似文献   

Feline post‐sterilization hyphema     

Alex P. Schenk  Ann M. McGrath  Cheryl A. Beatty  Jennifer L. Ottney  Ellen K. Gratch  Sheilah A. Robertson  Andrs M. Komromy 《Veterinary ophthalmology》2020,23(3):588-591

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Association of bovine KISS1 single nucleotide polymorphisms with reproductive traits in Indian Cattle     

Umesh Singh  Rani Alex  Sushil Kumar  Rajib Deb  Thiruvothur Venkatesan Raja  Shaily Singhal  Gyanendra Singh Sengar  Bharat Singh Rathod  Kotikalapudi Srirama Murthy  Nitin Vasant Rao Patil 《Reproduction in domestic animals》2020,55(8):922-930

Kisspeptins, a family of neuropeptide encoded by the Kiss1 gene, have emerged as crucial regulator of fertility and reproduction by regulating the hypothalamic–pituitary–gonadal axis. The present study was aimed to identify and associate SNPs in the KISS1 gene with reproductive traits in cattle of Indian origin. DNA samples collected from 300 individual cows of three Indian dairy breeds (Gir, Kankrej and Frieswal) of cattle were used in the study. The SNPs of KISS1 gene were identified with PCR-RFLP and sequence analysis using two sets of primer pairs. A total of 5 SNPs were identified in the targeted region of which, two were selected for screening the population and association studies. The analysis revealed that genotypes of rs442633552G>A and rs42022871C>T had a significant association with dry period. The SNP rs42022871C>T also established significant role in milk production traits, and selection of TT-genotyped animals will improve the reproduction and production potential of the animals.  相似文献   

Electroencephalographic alterations in a mare with presumed intermittent neuroglycopenia caused by severe hypoglycaemia-associated with nonislet cell tumour     

L. R. R. Costa  C. G. Donelly  C. M. Crowe  B. Vaughan  C. E. Alex  M. Aleman 《Equine Veterinary Education》2020,32(5):238-245

The focus of this report was to document the electroencephalogram (EEG) findings associated with nonislet cell tumour-induced hypoglycaemia (NICTH) in a racing Thoroughbred mare subsequently diagnosed with renal carcinoma and carcinomatosis. We evaluated cortical cerebral activity and confirmed paroxysmal activity consistent with subclinical seizures by performing an EEG prior to onset of clinical signs of seizures. We showed that the electrical activity pattern progressed in a similar fashion as in humans with severe, progressive hypoglycaemia and presumed neuroglycopenia. The glycaemic threshold for abnormalities detected in EEG showed that abnormal electrical cortical activity appeared when blood glucose dropped to 44 mg/dL (2.4 mmol/L) and paroxysmal activity spread, becoming generalised when blood glucose dropped to 23 mg/dL (1.3 mmol/L). NICTH is an uncommon paraneoplastic phenomenon in several species. In horses, NICTH has been reported most frequently in primary renal tumours, followed by primary hepatic tumours. This report highlights the importance of investigating the possibility of hypoglycaemia in cases of horses that present altered state of consciousness with or without intermittent seizures. This case report also highlights that the diagnostic work-up for horses presenting with episodic hypoglycaemia should comprise investigation of possible neoplasia, as paraneoplastic hypoglycaemia should be included in the list of differentials of horses with hypoglycaemia.  相似文献   

Contributing factors to surgical site infection after tibial plateau leveling osteotomy: A follow-up retrospective study     

Chris R. M. Hagen BSc  DVM  Ameet Singh DVM  DVSc  DAVCS  J. Scott Weese DVM  DVSc  DACVIM  Quinn Marshall BSc  Alex zur Linden DVM  DACVR  Thomas W. G. Gibson DVM  DVSc  DACVS  DACVSMR 《Veterinary surgery : VS》2020,49(5):930-939

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Serum D-lactate concentrations in dogs with parvoviral enteritis     

Emilee C. Venn  Alex J. Barnes  Ryan J. Hansen  Pedro L. Boscan  David C. Twedt  Lauren A. Sullivan 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2020,34(2):691-699

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Manganese foliar supplementation impacts rice yield in tropical lowlands     

Hélio Bandeira Barros  Maiko Emiliano Souza  Alex Sandro Dario  Marony Pereira de Almeida Santos 《Journal of plant nutrition》2013,36(14):1567-1574

Abstract

The aim of this work was to evaluate manganese (Mn) sources and levels effects in irrigated rice production in central Brasil (tropical lowlands of Tocantins state). The experiment was conducted in a 5x5?+?1 factorial scheme, five Mn sources and five levels (0.5; 1.0; 1.5; 2.0; and 2.5?kg ha^?1), applied in induction of tillering of rice plants, plus a control without treatment, and Mn content in leaves (mg kg^?1), number of panicles per area (m²), hundred grains weight (g), intact grains (%), and grain yield (kg ha^?1) were analyzed. Treatments with Mn-carbonate source got the best results and this source at the level of 1.5?kg ha^?1 provided the highest yield: 7,375?kg ha^?1. Higher values were obtained with the application of 1.0 to 1.5?kg ha^?1 of Mn, except for the intact grains where the best means were obtained at 2.5?kg ha^?1.  相似文献   

Methane emissions from upland forest soils and vegetation   总被引：1，自引：0，他引：1  

Megonigal JP  Guenther AB 《Tree physiology》2008,28(4):491-498

Most work on methane (CH(4)) emissions from natural ecosystems has focused on wetlands because they are hotspots of CH(4) production. Less attention has been directed toward upland ecosystems that cover far larger areas, but are assumed to be too dry to emit CH(4). Here we review CH(4) production and emissions in upland ecosystems, with attention to the influence of plant physiology on these processes in forests. Upland ecosystems are normally net sinks for atmospheric CH(4) because rates of CH(4) consumption exceed CH(4) production. Production of CH(4) in upland soils occurs in microsites and may be common in upland forest soils. Some forests switch from being CH(4) sinks to CH(4) sources depending on soil water content. Plant physiology influences CH(4) cycling by modifying the availability of electron donors and acceptors in forest soils. Plants are the ultimate source of organic carbon (electron donor) that microbes process into CH(4). The availability of O(2) (electron acceptor) is sensitive to changes in soil water content, and therefore, to transpiration rates. Recently, abiotic production of CH(4) from aerobic plant tissue was proposed, but has not yet been verified with independent data. If confirmed, this new source is likely to be a minor term in the global CH(4) budget, but important to quantify for purposes of greenhouse gas accounting. A variety of observations suggest that our understanding of CH(4) sources in upland systems is incomplete, particularly in tropical forests which are stronger sources then expected.  相似文献