矸酆恐?,垩白率与糙米率、蛋白

Χ灾绷吹矸酆康挠跋焓钦?,直接影响比间接影响大。Study on the correlation between rice quality and agronomic traits of quality riceNIE Cheng rong, WEN Yu hui, WANG Yun bo, CHEN Ming zhong,LI Mei, LIU Dao quan(Agronomy Department, Foshan University , Nanhai 528231,China)The correlative analy     

国外建设现代畜牧业的基本做法及我国现代畜牧业的模式设计

世界各国由于自然经济条件差异较大,在畜牧业现代化过程中逐步形成了不同的模式和道路。国外现代畜牧业的模式有:现代草地畜牧业、大规模工厂化畜牧业、适度规模经营畜牧业和集约化经营畜牧业。那么,我国现代畜牧业的模式应该是什么?     

刺槐抗旱造林技术的研究

在不同类型区及不同立地条件下，研究了提高剌槐成活率和生长量的抗旱造林技术。结果表明，采用径流集存、吸水剂蘸根、覆膜覆草及幼林地少量施肥技术，均可显著提高剌槐造林成率与生长量，提高幅度为２．０％－８．９％和１４．５％－８７．５％。采用混草技术可增收可观的优质牧草，经济效益和生态效益显著。     

山洪对房屋的破坏及防患

山洪对房屋的破坏随着生态环境的恶化而加剧,其损失又随人民生活水平的提高而增加。防患房屋遭受山洪破坏刻不容缓。本文客观地总结了山洪破坏房屋具有的区域性、多样性、毁灭性特征,通过分析房屋遭受山洪破坏的沉痼陋习,初步揭示了山洪惩罚人为性大失误的沉痛教训,进而提出防患山洪破坏房屋要非工程措施与工程措施相结合,运用社会、经济、法律的手段,加以减灾引导,加强建房管理,采取开撇水沟、挖水平槽、刨鱼鳞坑、砌护坡墙、打挡水桩等直接有效的工程措施,加速隐患补救,实现减灾目的。     

雷帕霉素预处理延缓牡丹‘洛阳红’切花衰老的生理效应

为研究雷帕霉素靶标激酶TOR在牡丹开花衰老过程中的生理作用,以牡丹(Paeonia suffruticosa Andr.)‘洛阳红’切花为试材,用0.01μmol·L^-1雷帕霉素预处理2 h后瓶插,并测定瓶插寿命、能量物质含量、糖分含量、乙烯释放速率、呼吸速率、MDA含量以及Ps TOR、Ps Sn RK1和Ps HXK1表达量变化。结果表明:雷帕霉素预处理可延长该牡丹切花的瓶插最佳观赏期和增大花朵的最大花径;另外,雷帕霉素预处理还可提高花瓣可溶性糖含量和能荷积累,降低呼吸耗能和MDA含量,并下调瓶插初期PsSnRK1和PsHXK1的表达水平,上调瓶插后期PsTOR和PsSnRK1的表达水平。说明雷帕霉素可通过TOR途径调控能量感知,延缓牡丹切花的开放和衰老进程,进而提高瓶插品质。     

短稳杆菌100亿孢子／毫升悬浮剂防治甘蓝小菜蛾毒力测定和田间试验

短稳杆菌（Empedobacterbrevis）是从罹病死亡的四龄斜纹夜蛾幼虫尸体中分离、筛选、纯化而来的生物农药创制新品种。经初步试验,该农药对鳞翅目害虫有较好的防效。为摸清进一步提高该农药防治甘蓝小菜蛾药效的有效途径,探索光照、温度、湿度、稀释浓度、防治对象不同虫龄与防治效果之间的关系,设置室内和田间药效试验,探析田间应用技术,为合理、科学、大面积推广使用该农药提供科学依据。     

保温型刚性护面渠道设计

在刚性面层下设置一道性能良好的保温层来防止基土冻结,可以从根本上解决冻胀破坏的问题。这种带保温层的刚性护面渠道称为保温型刚性护面渠道,根据热工原理,提出了保温型刚性护面渠道横断面设计在构造方面的要求,进一步推导出计算保温层厚度的有关公式,并给出算例,还指出了需要进一步研究和探讨的问题。     

Prognostic factors in cats with chronic kidney disease

BACKGROUND: Chronic kidney disease (CKD) is a common cause of morbidity and mortality in cats. HYPOTHESIS: Some baseline variables are associated with shorter survival times in cats with CKD. ANIMALS: Client-owned cats. METHODS: Cats with CKD with initial plasma creatinine concentration > or =2.0 mg/dL and urine specific gravity (USG) < or = 1.025 were recruited into a prospective clinical trial that compared benazepril with a placebo. We describe baseline variables in 190 cats and their influence on renal survival time in the placebo group (95 cats), which was followed for up to 1,097 days. Renal survival time was defined as the time from initiation of therapy to the need for parenteral fluid therapy, euthanasia, or death related to renal failure. RESULTS: Of the 95 cats treated with a placebo, 58 were censored and 37 reached the renal survival end point (died, n = 0; euthanized, n = 17; parenteral fluids, n = 12; parenteral fluids followed by euthanasia, n = 8). Increased plasma creatinine concentration, increased urine protein-to-creatinine ratio (UPC), and increased blood leukocyte count were significantly (P < .01) associated with a shorter renal survival time and were independent risk factors. Increased concentrations of plasma phosphate or urea, and lower blood hemoglobin concentration or hematocrit were significantly (P < .01) associated with a shorter renal survival time and were dependent risk factors, because they also were significantly (P < .01) correlated with plasma creatinine concentration at baseline. CLINICAL IMPORTANCE: Several variables were significantly associated with a shorter renal survival time in cats with CKD.     

Experimental Study on the Deformation Characteristics of Fine-Sandstone Under the Loading and Unloading Conditions

The deformation characteristics of the fine-sandstone is studied under the loading and unloading conditions at the three different deformation-rates and the two different stress-levels. The experimental results show that there is really the plastic-loop in the deformation curve for the loading deformation curve is different from the unloading deformation curve. But the plastic-loop is nearly unchangeable since the second circulate loading. The residual-deformation is be almost zero since the second circulate loading, and that the slope of the deformation curve increases as the deformation-rate increases, and that the residual-deformation increases as the stress-levels increases.