FREQUENCY AND NUMBER OF ULTRASOUND LUNG ROCKETS (B‐LINES) USING A REGIONALLY BASED LUNG ULTRASOUND EXAMINATION NAMED VET BLUE (VETERINARY BEDSIDE LUNG ULTRASOUND EXAM) IN DOGS WITH RADIOGRAPHICALLY NORMAL LUNG FINDINGS

Lung ultrasound is superior to lung auscultation and supine chest radiography for many respiratory conditions in human patients. Ultrasound diagnoses are based on easily learned patterns of sonographic findings and artifacts in standardized images. By applying the wet lung (ultrasound lung rockets or B‐lines, representing interstitial edema) versus dry lung (A‐lines with a glide sign) concept many respiratory conditions can be diagnosed or excluded. The ultrasound probe can be used as a visual stethoscope for the evaluation of human lungs because dry artifacts (A‐lines with a glide sign) predominate over wet artifacts (ultrasound lung rockets or B‐lines). However, the frequency and number of wet lung ultrasound artifacts in dogs with radiographically normal lungs is unknown. Thus, the primary objective was to determine the baseline frequency and number of ultrasound lung rockets in dogs without clinical signs of respiratory disease and with radiographically normal lung findings using an 8‐view novel regionally based lung ultrasound examination called Vet BLUE. Frequency of ultrasound lung rockets were statistically compared based on signalment, body condition score, investigator, and reasons for radiography. Ten left‐sided heart failure dogs were similarly enrolled. Overall frequency of ultrasound lung rockets was 11% (95% confidence interval, 6–19%) in dogs without respiratory disease versus 100% (95% confidence interval, 74–100%) in those with left‐sided heart failure. The low frequency and number of ultrasound lung rockets observed in dogs without respiratory disease and with radiographically normal lungs suggests that Vet BLUE will be clinically useful for the identification of canine respiratory conditions.     

水稻蓝膜棚式育秧效果的研究

本研究表明：蓝膜有提高秧苗N、P、K合量；促进秧苗干重、分蘖数、叶面积、根数增加的效应，随膜色加深效果越显著．80％透光率的蓝膜对提高秧苗素质效果最佳。还研究了不同光强、不同天气下蓝膜透光率的变化，以及蓝膜育秧的地下、地上温度状况．     

用BLUE法评定猪繁殖性能的杂交效果

用BLUE法分析了青海省养猪繁育体系中母本互助猪,父本杜洛克、长白、汉普夏、大约克、巴克夏、苏白猪和二、三元杂交猪的繁殖效果。结果表明:不同品种和不同杂交组合的繁殖性状之间有明显差异(P<0.05或P<0.01);三元杂交组合的多数繁殖性状极显著的优于纯种亲本,显著优于二元杂交组合,而二元杂交组合也显著优于纯亲本;互助猪产仔数显著高于瘦肉型父本,而瘦肉型父本在改良仔猪生长发育方面则有明显优势。说明我省以三元杂交为主建立养猪繁育体系是适当的,但应注意提高互助猪早期生长发育性能,才能表现出更大的杂种优势。     

Vitreosity,its stability and relationship to protein content in durum wheat

High quality requirements are set on durum wheat (Triticum durum) from semolina mills and pasta producers. For the production of semolina and pasta with good cooking quality, high grain protein content and vitreosity is required. The dependency of vitreosity on protein content as well as its stability under the influence of humidity was not well investigated up to now. We (1) compared two methods to determine vitreosity, (2) investigated the relationship between vitreosity and protein content, (3) developed a method to analyze vitreosity under humidity, and (4) examined the relationship between protein content and agronomical as well as quality traits in durum wheat. The results showed that the formation of vitreous kernels greatly depends on the protein content. To evaluate the stability of vitreosity under the influence of humidity a new method was elaborated and employed to assess the durum germplasm under study. This revealed that vitreosity of a durum wheat variety depends on the potential to form vitreous kernels but also to maintain this vitreosity under the influence of humidity. Our results further show that protein content is a central trait in durum wheat that strongly influences important traits like grain yield, vitreosity, and b-value.     

线性模型的比较

本文讨论带有多余参数,协方差具有Kala形式的广义线性模型.首先把这种形式的模型等价转化为带有多余参数,协方差形如V的线性模型,从而讨论其比较问题.然后,本文讨论不带有多余参数,但协方差形式为Kala形式的模型,并把其转化为通常的线性模型.依次化繁为简讨论模型比较问题.