“一带一路”背景下陕西茶叶跨境电商发展路径研究

陕西作为丝绸之路的发源地，以其有利的自然生态条件和区域产业结构，形成了以茶叶为主导的产业发展格局。目前，陕西省茶叶出口规模不大，市场占有率较低。在“一带一路”倡议的推动下，陕西省茶叶出口至沿线国家的潜力较大，未来将逐步呈上升态势。研究了“一带一路”背景下陕西茶叶跨境电商市场发展现状和存在的问题，提出陕西茶叶跨境电商发展路径，通过借力跨境电商平台、开拓国际市场、稳固绿茶品牌、布局海外仓解决出口难的问题，以及完善跨境电商法律秩序，拓展陕西茶叶跨境电商发展路径。      

Comparing the behavioural thermoregulation response to heat stress by Atlantic salmon parr (Salmo salar) in two rivers

Climate change is expected to increase the frequency and magnitude of extreme thermal events in rivers. The Little Southwest Miramichi River (LSWM) and the Ouelle River (OR) are two Atlantic salmon (Salmo salar) rivers located in eastern Canada, where in recent years, water temperatures have exceeded known thermal limits (~23°C). Once temperature surpasses this threshold, juvenile salmon exploit thermal heterogeneity to behaviourally thermoregulate, forming aggregations in coolwater refuges. This study aimed to determine whether the behavioural thermoregulation response is universal across rivers, arising from common thermal cues. We detailed the temperature and discharge patterns of two geographically distinct rivers from 2010 to 2012 and compared these with aggregation onset temperature. PIT telemetry and snorkelling were used to confirm the presence of aggregations. Mean daily maximum temperature in 2010 was significantly greater in the OR versus the LSWM (p = 0.005), but not in other years (p = 0.090–0.353). Aggregations occurred on 14 and 9 occasions in the OR and LSWM respectively. Temperature at onset of aggregation was significantly greater in the OR (T_onset = 28.3°C) than in the LSWM (T_onset = 27.3°C; p = 0.049). Logistic regression models varied by river and were able to predict the probability of aggregation based on the preceding number of hours >23°C (R² = 0.61 & 0.65; P₅₀ = 27.4°C & 28.9°C; in the OR and LSWM respectively). These results imply the preceding local thermal regime may influence behaviour and indicate a degree of phenotypic plasticity, illustrating a need for localised management strategies.     

典型山地草甸草原主要牧草生长发育情况分析

对天山北坡中山带典型山地草甸草原4种具有代表性的天然牧草——老芒麦（Elymus sibiricus）、黄（Astragalus membranaceus）、老鹳草（Geranium wilfordii）、千叶蓍（Achillea millefolium）的生长发育情况进行了研究。结果表明，4种牧草的高度变化趋势表现为“慢-快-慢”的植物基本生长规律；老芒麦、千叶蓍、老鹳草的生长速率在返青期到分蘖期时较快，而黄芪的生长速率则在返青后就较快，分蘖期后4种牧草的生长速率开始变慢；盖度和产量的最大值出现在6月和7月。     

苯与过氧化氢直接催化氧化合成苯酚

研究苯一步催化氧化合成苯酚的新方法，以Ｆｅ－Ｃｕ－Ｍｎ－Ｏ／海泡石为催化剂，双氧水及添加剂为氧化剂。探讨添加剂性质、催化反应温度及双氧水浓度对反应过程的影响规律，并提出催化氧化的反应机理。     

提高阅卷与试题分析速度的有效方法探讨

分析了核对、打孔、光照透明、光电机器阅读和扫描等几种快速手工和自动阅卷评分方法。采用我校目前广泛使用的“成绩记载”中的浮动“阅卷面板”鼠标点击，以及自动阅读机与“成绩记载”间的“数据转换”程序，可大大提高成绩录入、成绩分析和试题分析速度。     

华夏慈姑种质资源及其研究(上)

介绍了华夏慈姑种质资源的分布、植物学和园艺学分类、生物学特性及生长规律、营养成分，对华夏慈姑的细胞生物学、植物学、栽培学以及病虫害防治等方面的研究进展作了概述，提出了华夏慈姑种质资源研究的基本思路。     

C_R704玉米与S_C704玉米过氧化物酶同工酶及生理指标分析

C_R704玉米与S_C704玉米各时期的过氧化物酶同功酶谱无明显差别,二者遗传基础一致,但酶活性C_R704玉米高于S_C704玉米。经测定三系杂种C_R704玉米在叶绿素、糖、淀粉及蛋白质含量均优于单交种S_C704玉米。     

Enhancement of tetrathiomolybdate-induced copper excretion in bile of sheep by the alpha 2-agonistic action of xylazine

The effect of intravenous doses of cortisol and xylazine on the quantity of copper excreted in response to 100 and 200 mg doses of tetrathiomolybdate (TTM) was studied in seven sheep. Cortisol alone produced a non-significant 1.4-fold increase and had no enhancing action on the response to TTM. Xylazine produced a significant 2.25-fold increase, doubled the quantity of copper excreted in response to both doses of TTM and reduced bile flow by approximately 35 per cent. The alpha 2 antagonist, idazoxan, prevented both the latter effects showing that they were due to xylazine's alpha 2-agonistic action. It is suggested that the combination of an alpha 2-agonist with the intravenous injection of TTM in the treatment of acute copper toxicity in sheep could reduced by 50 per cent the amount of molybdenum needed.