探讨小型农田水利工程规划、建设与管理

农业经济是社会经济的重要组成部分,我国正处于社会主义初级阶段,想要完善我国的经济体制,必须重视农业经济的发展。在全面建设小康社会,建设社会主义新农村的今天,想好发展好农业经济,农田水利工程建设是一种行之有效的方法。     

略论小城镇园林绿地系统规划

为适应小城镇建设的需要，确保小城镇的良好生态环境，对小城镇的特点，小城镇园林绿地系统规划的原则与布局进行了探讨。并对规划编制与实施中的几个相关问题进行了讨论。     

浅谈中小饲料企业的品牌建设

随着饲料行业竞争的加剧，饲料企业依靠品牌占领市场是必由之路。但很多中小型饲料企业在品牌建设的过程中存在一些认识上和操作上的误区，如品牌理念不成熟、品牌传播途径单一等。针对这些情况，本文提出了一些对策建议，如树立品牌战略意识、品牌推广中的整合传播、宣传和维护品牌等。     

浅析加快怒江州贡山县独龙江乡独龙族经济的发展

人口较少民族是我国多民族大家庭的重要组成部分，同时也是其中的特殊群体。这些民族经济社会发育的迟缓，不仅影响到小康社会和新农村建设的进程，也影响边疆的巩固和社会的稳定。因此，改善边疆人口较少民族的经济发展条件和加快其经济发展速度已刻不容缓。文章以云南独龙族为例，在实地调查获得反映其经济发展现状资料的基础上，分析独龙族在经济发展过程中存在的问题，并提出相关建议与措施。     

小功率轴流风机负压通风降温效果分析

利用小型轴流风机通风降低仓库粮堆温度,通过对小功率轴流风机通风效果分析,观察粮食温度和风机能耗情况,分析其节能通风的效果。     

Preliminary study of capsule endoscopy in the small intestine of horses

Objective To evaluate the visibility of various portions of the small intestine in healthy horses using capsule endoscopy. Procedure Six healthy, conscious adult Thoroughbreds were restrained and an endoscopic capsule (PillCam® SB capsule) was inserted into the oesophagus using an intranasal catheter aided by a guide wire. Water (500 mL) flushed the capsule down the gastrointestinal tract. Data were collected and stored in the recorder of the endoscopic system for 6 hours after capsule insertion and the images were evaluated using an image reader and scored using a visual analogue scale. Results Capsule endoscopy enabled observation of the distinct mucosal shape, colour, and villus structure of the intestinal lumen from the duodenum through the proximal jejunum. At 4 h after passing the pylorus, the endoscopic capsule started transmitting increasingly dark images in the distal jejunum as the lumen circumference increased. Means of the visual analogue scale in the duodenum, proximal jejunum, and distal jejunum were 93.8 ± 1.3%, 86.2 ± 2.5% and 48.8 ± 6.3%, respectively. Differences among these values were statistically significant (P < 0.05). Conclusions and Clinical Relevance Capsule endoscopy enables observation of the distinct mucosal shape, colour and villus structure of the proximal and mid-small intestine in healthy horses.     

汾渭盆地全新世成壤环境演变比较研究

通过对汾渭盆地全新世土壤的野外考察以及磁化率和高分辨率CaCO3 的分析 ,揭示了该区域土壤成壤过程与气候变化关系。研究表明 ,汾渭盆地全新世的S0 地层形成于全球性的全新世气候最适宜期 ,约从 85 0 0aBP土壤开始发育 ,形成较厚的S0 层。约从 310 0aBP起始 ,气候发生变化 ,干旱和沙尘堆积形成了黄土L0 层和现代表土层。土壤剖面磁化率与CaCO3 指标反映 ,由于地带性因素存在 ,全新世汾河盆地古土壤S0 的成壤强度远远低于渭河盆地。在全新世气候最适宜期 ,两地气候和环境的差异扩大 ,而晚更新世马兰黄土堆积期间和全新世其它主要阶段 ,两地气候和环境的差异相对减小。     

新疆小城镇空间组团发展的战略思考

本文针对新疆小城镇发展的“大分散 ,小集中”绿洲特性 ,提出了组团式发展的空间组织模式设想 ,认为新疆小城镇空间布局将形成一个天山北坡小城镇密集带和若干小城镇组团。尽管不同组团的发展特点 ,发展优势和发展途径不同 ,但集中发展是其共同主旨思想。文章针对各自组团提出了因地制宜的发展策略和建议     

Protective effect of ischemic-preconditioning under the mild hypothermia against small intestine ischemia-reperfusion injury in rats

AIM: To investigate the protective effect of ischemic-preconditioning under the mild hypothermia against small intestine ischemia-reperfusion injury in rats and its mechanism. METHODS: Thirty-two rats were randomized into 4 groups (8 rats in each group): sham operated group (Sham), ischemia-reperfusion (I/R) group, ischemic-preconditioning (IP) group, mild hypothermia ischemic-preconditioning (MHIP) group. The wet/dry ratio, Ca²⁺-Mg²⁺-ATPase activity in intestine tissue, the malondialdehyde (MDA) content, activities of lactate dehydrogenase (LDH), superoxide dismutase (SOD) and total antioxdase (TAX) in blood were determined. Ultrastructure, Bcl-2 and Bax expression in intestinal mucosa tissue were also observed. RESULTS: After I/R, the intestinal tissue wet/dry ratio, the content of MDA, LDH activity, the optic density of Bcl-2 and Bax proteins were significantly higher in I/R group than those in sham group (P<0.01). The activities of Ca²⁺-Mg²⁺-ATPase, SOD, TAX were significantly lower in I/R group than those in sham group (P<0.01). The intestinal tissue wet/dry ratio, the content of MDA, LDH activity and the optic density of Bax protein were significantly lower in IP group than those in I/R group (P<0.01), and also lower in MHIP group than in IP group (P<0.05). The activities of Ca²⁺-Mg²⁺-ATPase, SOD, TAX and the optic density of Bcl-2 protein were significantly higher in IP group than in I/R group (P<0.01). CONCLUSION: MHIP can protect intestine against I/R injury in rats, which may be related to enhancing oxidation-resistance of intestine, inhibiting lipid peroxidation, upregulating the expression of Bcl-2 protein and downregulating the expression of Bax protein.     

新疆塔城地区中小河流径流成因分析及预测

以塔城地区乌拉斯台河为例,根据其年径流量(1966-1995年)序列的长期变化特征,提出了时间序列分解预测模型,即将年径流系列分解为趋势项、周期项、随机项,通过对其各项进行识别、提取,再将各项线性叠加,从而建立年径流量预测模型.从模型的识别过程可得,乌拉斯台河年径流具有不显著的递增趋势和明显的周期变化,同时具有一定的随机性.从模型的检验来看,所建模型具有较好的适应性和预报精度,并且拟合效果较好,说明这种预测方法有一定的实用性.