检索结果-南通市图书馆

Variogram Analyses of Soil Characters in Glacial moraine Landscapes

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Science and Engineering(A) 2012年第12期1卷 1308-1316页

作者： Adzemi mat arshad mustika Edi Armanto Juergen Lamp Elisa Wildayana Faculty of Agrotechnology and Food Science Universiti Malaysia Terengganu 21030 Malaysia Institute of Plant Nutrition and Soil Science Edited-Kiel University Kiel D-24118 Germany Faculty of Agriculture Sriwijaya University Indralaya South Sumatra 30662 Indonesia

The objective of this research is to analyze variogram analyses of soil characters in Glacial moraine Landscapes. The research site is located in sloping landscapes, Kuehren, North Germany. The survey method was detailed using maps with scales of 1:5,000. Soil sampling was performed by soil pits and borings and completely analyzed in laboratory. Collected data were evaluated by geostatistics program for spatial soil variability analyses. The variogram models show that spatial soil variability ranges between 70-120 m (mean: 85 m). Effective distances of sampling are calculated at around 50 m. The range values of soil characters are proportional with the range of elevation (range: 70 m, effective distance: 40 m). The relief determines mainly the spatial variability of soil characters.

关键词： Variogram analyses soil characters glacial moraine landscapes

Florida两浅水湖中骚扰性摇蚊幼虫与其它无脊椎动物的密度动态及其影响因素

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

寄生虫与医学昆虫学报 1996年第3期3卷 186-192页

作者：薛瑞德 arshadAli 赵彤言北京丰台微生物流行病研究所100071

１９９２年冬季和１９９３年春季针对美国中佛罗里达地区两个浅水湖中骚扰性摇蚊幼虫和其它底栖无脊椎动物种群变化的调查结果表明：摇蚊幼虫占底栖无脊椎动物群落组成的４８％，莹蚊科占２１％，水生蠕虫占３１％。上述底栖无脊椎动物... 详细信息

１９９２年冬季和１９９３年春季针对美国中佛罗里达地区两个浅水湖中骚扰性摇蚊幼虫和其它底栖无脊椎动物种群变化的调查结果表明：摇蚊幼虫占底栖无脊椎动物群落组成的４８％，莹蚊科占２１％，水生蠕虫占３１％。上述底栖无脊椎动物的垂直分布情况是：１ｍ以内水深处为３７３３个／ｍ２底面积，１．１—１．９ｍ深处为５５３８个／ｍ２，２—３ｍ深处为９１８１个／ｍ２。１１月至３月密度最低，１０、４月份密度较高。摇蚊幼虫与其它无脊椎动物冬春季密度变化与湖中水深、水温。

关键词：摇蚊幼虫密度生态水质

发育迟滞的一种少见病因:迟发性的原发性胃出口阻塞

在线全文

学校读者我要写书评

暂无评论

世界核心医学期刊文摘（儿科学分册） 2006年第1期2卷 34-34页

作者： Nazir Z. arshad m. 贺文龙 Section of Pediatric Surgery Department of Surg ery Aga Khan University Hospital Karachi 74800 Pakistan

We describe our experience of 2 children and review 6 previously reported case s of late-onset primary gastric outlet obstruction. The patients presented with abdominal pain, recurrent nonbilious vomiting, and growth retardation after a v ariable period of normal food intake. There was no history of peptic ulceration and corrosive ingestion. Barium meal showed dilated stomach with delayed gastric emptying. Exploration demonstrated dilated stomach with no intrinsic or extrins ic mechanical obstruction at the pylorus. Heineke-mikulicz pyloroplasty was cur ative. Patients improved postoperatively and started thriving. We propose etiolo gy and the term pyloric achalasia for this late-onset functional gastric outlet obstruction.

关键词：少见病因胃膨胀患儿症状胆汁性呕吐消化性溃疡胃排空延迟钡餐检查正常进食机械性阻塞外源

The Linkage between Natural Vegetation, Water Dynamics and Pyrite （FeS2） Oxidation in Tidal Lowlands

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Science and Engineering(A) 2013年第4期2卷 243-249页

作者： Adzemi mat arshad mustika Edi Armanto Elisa Wildayana Adipati Napoleon Dwi Probowati Ahmad Fadhli Adzemi Department of Agrotechnology Faculty of Agrotechnology and Food Science Uiversiti Malaysia Terengganu Terengganu 21030 Malaysia Department of Soil Science Faculty of Agriculture Sriwijaya University South Sumatra 30662 Indonesia Department of Agricultural Socio-Economics Faculty of Agriculture Sriwijaya University South Sumatra 30662 Indonesia Department of Biological Science Faculty of Science and Technology Uiversiti Malaysia Terengganu Terengganu 21030 Malaysia

The research aimed to analyze the linkage between natural vegetation, water dynamics and pyrite (FeS2) oxidation in tidal lowlands. The research was carried out in tidal lowland Pulau Rimau, South Sumatra from February to December 2010. The field observations are done by exploring several transect on land units. The field description refers to Soil Survey Staff. Water and soil samples were taken from selected key areas for laboratory analyses. The vegetation data were collected by making sample plots placed on each vegetation type with plot sizes 10 m × 10 m for secondary forests and 5 m × 5 m for shrubs and grass. The observations of surface water level were done during the river receding with units of meter above sea level (m·asl). The results shows that pyrite formation is largely determined by the availability of natural vegetation as S (sulfur) donors, climate and uncontrolled water balance and supporting faunas such as crabs and mud shrimp. Climate and water balance as well as supporting faunas is the main supporting factors to accelerate the process of formation pyrite. Oxidized pyrite increases soil pH thus toxic to fish, arable soils, plant growth, disturbing the water quality and soil nutrient availability. Oxidized pyrite is predominantly accelerated by the dynamics of river water and disturbed natural vegetation by human activities, and the pyrite oxidation management approach is divided into three main components of technologies, namely water management, land management and commodity management.

关键词：自然植被水动力学二硫化铁黄铁矿氧化低地潮汐土壤pH值

饲料中添加α-硫辛酸和α-生育酚乙酸酯可增强鸡肉的氧化稳定性

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

饲料博览 2013年第1期23卷 28-28页

作者： Yasin m Asghar A Anjum F m Butt m S Khan m I arshad m S Shahid m El-Ghorab A H Shibamoto T

肉品质下降是肉发生脂质过氧化反应引起的。饲料中添加抗氧化剂可减少脂质过氧反应化和改善屠宰后肉的氧化稳定性。研究结果表明,给肉鸡饲喂添加α-生育酚醋酸酯(200mg·kg-1)与α-硫辛酸(25、75、150mg·kg-1)可增加肉的氧化稳定性及... 详细信息

肉品质下降是肉发生脂质过氧化反应引起的。饲料中添加抗氧化剂可减少脂质过氧反应化和改善屠宰后肉的氧化稳定性。研究结果表明,给肉鸡饲喂添加α-生育酚醋酸酯(200mg·kg-1)与α-硫辛酸(25、75、150mg·kg-1)可增加肉的氧化稳定性及降低脂肪沉积。随着饲料中添加α-硫辛酸浓度的增加,肉中总酚含量和α-硫辛酸的含量增加。添加α-硫辛酸和α-生育酚乙酸酯,肉中的蛋白质含量没有改变。DPPH和TBA检测的结果表明,饲料中添加α-硫辛酸和α-生育酚乙酸酯,增强了鸡肉的抗氧化活性。给肉鸡饲喂食添加氧化油的饲料(4%),可导致其氧化稳定性降低。

关键词：抗氧化剂肉鸡禽流肉 α-硫辛酸肉品质 α-生育酚

添加大豆黄酮对肉种鸡产蛋高峰后期产蛋率、抗氧化活性及肝VTG-ⅡmRNA表达变化的影响

在线全文

学校读者我要写书评

暂无评论

饲料博览 2013年第1期23卷 4-4页

作者： Yasin m Asghar A Anjum F m Butt m S Khan m I arshad m S Shahid m El-Ghorab A H Shibamoto T

大豆黄酮即大豆植物雌激素,是一种强抗氧化剂,具有多种生物活性。研究通过在肉种鸡产蛋后期饲喂大豆苷元来证实大豆黄酮提高产蛋率的作用,并通过相关基因表达的变化和肝脏的抗氧化状态来阐明这个过程的机制。选择460日龄的肉种鸡300只,... 详细信息

大豆黄酮即大豆植物雌激素,是一种强抗氧化剂,具有多种生物活性。研究通过在肉种鸡产蛋后期饲喂大豆苷元来证实大豆黄酮提高产蛋率的作用,并通过相关基因表达的变化和肝脏的抗氧化状态来阐明这个过程的机制。选择460日龄的肉种鸡300只,随机分成3组(每组100只,设10个重复,每个重复10只),分别饲喂基础日粮(对照组,CON)或在基础日粮中添加大豆黄酮5mg·kg-1(低剂量,L)或10mg·kg-1(高剂量,H)。预饲期1周,试验期15d。试验结果表明,添加大豆黄酮的高和低剂量均显著提高产蛋率(P0.05)。血清雌激素表现出剂量依赖性减少,且添加大豆黄酮高剂量组与其他组相比差异显著(P0.05)。大豆黄酮显著降低血清丙二醛含量(P0.05)。实时PCR分析结果表明,大豆黄酮组的母鸡随着产蛋率的增加,肝脏卵黄蛋白原-Ⅱ表达显著下降(PmRNA的表达显著上升(P0.05)。结果表明,添加大豆黄酮可通过提高抗氧化能力和不断改变肉鸡肝相关基因的转录来提高产蛋率。

关键词：产蛋率抗氧化基因表达大豆苷元肉种鸡

在线全文

学校读者我要写书评

暂无评论

豆粕替代鱼粉对生长期梭子蟹的影响

饲料博览 2017年第2期27卷 54-54页

作者： Taher S Romano N arshad A Ebrahimi m Teh J C Ng W K Kumar V

试验旨在研究梭子蟹饲料中豆粕(SBm)替代鱼粉的可行性。试验选取远海生长期梭子蟹,经过>6个蜕皮周期后测量其生长、发育情况,检测血液中高胆固醇、甘油三酯、磷酸盐含量以及全身粗蛋白质、胆固醇、肝胰腺的胰蛋白酶活性、组织病理和糖... 详细信息

试验旨在研究梭子蟹饲料中豆粕(SBm)替代鱼粉的可行性。试验选取远海生长期梭子蟹,经过>6个蜕皮周期后测量其生长、发育情况,检测血液中高胆固醇、甘油三酯、磷酸盐含量以及全身粗蛋白质、胆固醇、肝胰腺的胰蛋白酶活性、组织病理和糖原储备情况。6组等量氮、等脂肪和等能量的饲料,其中SBm替代鱼粉量分别为0(对照组)、20%、40%、60%、80%和100%。每组30个重复,从梭子蟹幼年期持续饲喂到蜕皮的第7阶段,蜕皮后期取样共3 d。试验结果表明,20%组梭子蟹生长状况最好,显著优于对照组。SBm替代量≥60%时,生长速度显著降低,而血液中胆固醇、甘油三酯、磷酸盐含量随之显著下降。全身水分、粗蛋白质和胆固醇含量无显著改变。同时,20%组到60%组梭子蟹的肝胰腺的胰蛋白酶活性显著下降,而80%组和100%进一步显著降低。SBm替代量≥60%时,肝胰腺损伤,上皮细胞糖原储备显著减少。试验结果表明,饲料中SBm替代量达40%时会影响生长期梭子蟹的生长及肝胰腺发育。

关键词：胰蛋白酶肝组织病理糖原替代鱼粉远海梭子蟹