B-cell leukemia in a sheep

Necropsy examination was performed on an 8.5-year-old Finnish ewe euthanatized because of progressive respiratory distress, cachexia, and weakness. Significant postmortem findings included a diffusely enlarged, dark-red friable liver, mild splenomegaly, and mild mesenteric lymphadenopathy. Examination of multiple tissue sections revealed intravascular atypical mononuclear cells in all tissues examined, with a leukemic pattern of infiltration of mesenteric lymph nodes, liver, lung, and spleen. Neoplastic cells were positive for CD79a and negative for CD-3, BLA.36, and CD68 leukocytic markers. The final diagnosis was B-cell leukemia.     

Effect of partial ureteral obstruction on results of renal scintigraphy in dogs

OBJECTIVE: To use scintigraphy to determine the effects of partial ureteral obstruction on renal transit time and induction of diuresis in dogs. ANIMALS: 8 adult dogs. PROCEDURE: Scintigraphy was performed, using technetium Tc 99m diethylenetriaminepentacetic acid (Tc 99m-DTPA), before and within 2 weeks after surgical induction of unilateral partial ureteral obstruction. Time of peak (TOP) for the parenchyma (pTOP) and whole kidney (wTOP) and mean-transit time (MTT) for the parenchyma (pMTT) and whole kidney (wMTT) were determined by evaluation of renal time-activity curves before and after deconvolution analysis. Percentage uptake for each kidney between 1 and 3 minutes after injection of Tc 99m-DTPA was determined and used to indicate glomerular filtration rate. The effect of diuresis was determined by measuring the slope of decrease in activity after i.v. administration of furosemide. Obstruction was documented by direct inspection of the ureter. RESULTS: There was a concomitant increase in pTOP, wTOP, pMTT, and wMTT of the kidney with the partially obstructed ureter in all dogs at various times between 2 and 9 days after surgery. Concurrently, renal time-activity curves changed shape. Percentage renal uptake of the affected kidney was decreased in 2 dogs. Response to furosemide injection was inconsistent for kidneys before surgery and for kidneys with obstructed and nonobstructed ureters after surgery. CONCLUSIONS AND CLINICAL RELEVANCE: Scintigraphy may be a useful procedure for the evaluation of renal function in dogs with ureteral obstruction. Induction of diuresis appears to be of little value for differentiating renal function in dogs with obstructed and nonobstructed ureters.     

苹果免套袋栽培的关键技术及病虫害防治技术分析

苹果免套袋栽培技术不仅可以降低生产成本,还能有效提升果实的内在品质,因此成为当前苹果栽培领域中备受关注的研究重点.基于此,总结了苹果免套袋栽培的关键技术要点,包括建园、土肥水管理、树形修建、花果期管理等多个方面,并对病虫害防治技术进行了详细分析,旨在推动苹果产业的节本增效发展.     

国产X80直缝埋弧焊接钢管力学性能测试

对国产X80直缝埋弧焊接钢管(JCOE工艺)进行了拉伸、夏比冲击、显微硬度和落锤撕裂等力学性能测试,结果表明,该钢管的各项性能均符合API SPEC 5L(43版)的指标要求,说明我国已经具备了生产高强度高韧性X80直缝埋弧焊管的能力.     

Comparison of signalment, clinicopathologic findings, histologic diagnosis, and prognosis in dogs with glomerular disease with or without nephrotic syndrome

Background: Nephrotic syndrome (NS) develops most commonly in people with glomerular diseases associated with marked albuminuria. Hypernatremia, hypertension, and progressive renal failure are more prevalent in nephrotic than nonnephrotic human patients. Hypothesis/Objectives: Dogs with NS have higher serum cholesterol, triglyceride, and sodium concentrations, higher urine protein:creatinine ratios (UPC) and systolic blood pressure, and lower serum albumin concentrations than dogs with nonnephrotic glomerular disease (NNGD). NS is associated with membranous glomerulopathy and amyloidosis. Affected dogs are more likely to be azotemic and have shorter survival times. Animals: Two hundred and thirty‐four pet dogs (78 NS dogs, 156 NNGD dogs). Methods: Multicenter retrospective case‐control study comparing time‐matched NS and NNGD dogs. NS was defined as the concurrent presence of hypoalbuminemia, hypercholesterolemia, proteinuria, and extravascular fluid accumulation. Signalment, clinicopathologic variables, histopathologic diagnoses, and survival time were compared between groups. Results: Age, serum albumin, chloride, calcium, phosphate, creatinine, and cholesterol concentrations, and UPC differed significantly between NS and NNGD dogs. Both groups were equally likely to be azotemic at time of diagnosis, and NS was not associated with histologic diagnosis. Median survival was significantly shorter for NS (12.5 days) versus NNGD dogs (104.5 days). When subgrouped based on serum creatinine (< or ≥1.5 mg/dL), survival of NS versus NNGD dogs was only significantly different in nonazotemic dogs (51 versus 605 days, respectively). Conclusions and Clinical Importance: Presence of NS is associated with poorer prognosis in dogs with nonazotemic glomerular disease. Preventing development of NS is warranted; however, specific interventions were not evaluated in this study.     

玉米高产栽培技术要点及推广方式分析

玉米作为我国主要的粮食作物之一,其产量和品质受到了越来越多人的关注,在现代化农业发展背景下,实现高产栽培技术的推广与应用已经成为玉米种植业发展的主要趋势。本文通过对玉米高产栽培技术要点的分析,结合当前我国玉米种植技术推广现状对高产栽培技术推广方式进行探究,以期对提高玉米种植产量,推动农业技术水平的提高有所借鉴。     

猪繁殖与呼吸综合征并发附红细胞体病的诊疗报告

2004年9月,山东省枣庄市某猪场暴发一种以妊娠母猪死胎、流产、木乃伊胎、弱仔等为特征,同时出现贫血,黄疸,发热等症状的疾病。根据流行病学调查和实验室检查诊断为猪繁殖与呼吸综合征(procine reproductive and respiratory syndrome,PRRS)并发附红细胞体病,现将诊疗结果报告如下。     

超甜玉米金中玉高产制种技术

超甜玉米金中玉是以YT0213作母本、YT0235作父本配组育成的优质早中熟超甜玉米单交种,2008年通过湖北省农作物品种审定委员会审定,审定编号：鄂审玉2008009;2012年通过广东省农作物品种审定委员会审定,审定编号：2012008。     

Rapid electron tunneling through oligophenylenevinylene bridges

We measured rate constants of thermal, interfacial electron transfer through oligophenylenevinylene bridges between a gold electrode and a tethered redox species in contact with an aqueous electrolyte using the indirect laser-induced temperature jump technique. Analysis of the distance dependence indicates that, unlike other bridges studied to date, the rate constants are not limited by electronic coupling for bridges up to 28 angstroms long. The energy levels of the bridges relative to those of the redox species rule out hopping through the bridge. We conclude that, out to 28 angstroms, the transfer is limited by structural reorganization and that electron tunneling occurs in less than 20 picoseconds, suggesting that oligophenylenevinylene bridges could be useful for wiring molecular electronic elements.