一种复合营养素制剂的毒理学研究

通过小鼠急性经口毒性试验、遗传毒性试验（Ames试验、小鼠骨髓细胞微核试验、小鼠精子畸形试验）和大鼠30 d喂养试验,对以番茄红素油树脂、葡萄籽提取物为主要原料制成的复合营养素制剂进行毒理学研究.结果表明,样品对小鼠的最大耐受剂量（MTD）大于20 000 mg/kg BW,急性经口毒性属无毒级;3项遗传毒性试验结果均为阴性;30 d喂养试验中,各剂量组大鼠生长良好,血液指标、组织学检查等均未见与样品有关的异常改变.在试验剂量下,该复合营养素制剂是安全的.     

二段种分法制备氢氧化铝微粉的工艺

为了研究煤矸石酸法提取物硫酸铝的应用及氢氧化铝精细化生产过程,进行了二段种分法制备氢氧化铝微粉的工艺研究.用煤矸石酸法提取的硫酸铝和拜耳法精制的铝酸钠稀释后的溶液反应,生成的浆液经放置老化后即得活性晶种.用活性晶种进行铝酸钠溶液的一段种子分解和二段种子分解,制备氢氧化铝微粉.同时研究了制备过程中种子浆pH、分解温度、种子比值、分解时间、铝酸钠溶液α_k及铝酸钠溶液质量浓度对分解率、氢氧化铝微粉颗粒粒度的影响.结果表明,煤矸石提取物硫酸铝做晶种引发剂,在一定的工艺条件下可制得白度大于99%、Fe₂O₃质量分数小于0.006%、SiO₂质量分数小于0.05%、吸油值小于0.70 mL/g、粒度在0.5~6 μm的氢氧化铝微粉.     

印鉴自动识别系统中封闭凸多边形图像的提取

提出了一种封闭凸多边形图像的提取方法－种子扩散浮置实体算法，解决了印鉴自动识别系统中将待验印鉴图像从背景噪声中提取出来的问题，并在实际应用中取得了良好的效果。     

不同基质生态条件对葡萄硬枝扦插的催根效应

锯末、素砂、砂壤等3种基质对葡萄硬枝扦插的催根效应是不同的锯末、素砂对插条的催根数分别比砂壤增加27％和23．9％，根的长度分别比砂壤增加34．8％和3．g％；根的粗度锯末比砂壤增加7．8％，素砂比砂壤减少9．5％；3种基质催根成活率分别为104)％，97％，94％锯末的保温性、相对含水量、通气性均优于素砂和砂壤，有利于葡萄硬技扦插催根。     

发酵饲料的研制

用食用菌菌种作为发酵菌种。用生产食用菌的方法来利用农业下脚料的废物为主料 ,发酵生产饲料或饲料添加剂 ,为食用菌的研究开发提供了新途径。     

Chemical composition and antioxidant activity of essential oil from Magnolia grandiflora L. seed

The chemical composition and antioxidant activity of Magnolia grandiflora L.seed essential oil were examined.By combining gas chromatography and mass spectrometry (GC-MS),16 types of compounds were identified,including 40.91% oxygen-containing terpene derivatives,19.51% terpenes,13.97% esters,13.05% nitrogenous compounds,and 3.64% acids.Its capability of removing hydroxyl free radical was lower than that of V c,but it was closer to V c with increasing concentration.In cell experiment,all essential oil concentration (6.9,13.8,27.7,55.5,111.0,and 222.0 g/mL) groups increased cell proliferation by 26% or more (26.0%,38.8%,44.8%,40.2%,35.8%,and 30.4%,respectively).In rat experiment,the SD rats group showed an at least 38% rise (38.62%,61.68%,and 62.86%,respectively) in glutathione-peroxisome (GSH-Px)activity,which is more than 24% reduction (29.56%,24.30%,and 36.93%) in malondialdehyde (MDA) content,and no significant difference in SOD activity was found.The results show that the essential oil had strong antioxidant activity,without dose effect within the concentration range.     

A new species of Munromyia Bezzi (Diptera: Tephritidae) reared from Chionanthus battiscombei (Oleaceae) in northern Kenya

Munromyia marsabitensis sp. nov. is described from the isolated mountains of Marsabit in northern Kenya. It can be distinguished from the two known congeners by the thoracic and abdominal colour patterns, structure of the male and female terminalia, and host plants. Larvae are seed predators, developing within the green, aborted fruits of Chionanthus battiscombei. Over 70% of sampled fruits (n?=?74) were infested with larvae, but nearly all of the individually infested fruits (96.1%) produced only one adult tephritid. Bactrocera biguttula, but not M. marsabitensis, was reared from ripe fruits of the same plant.     

不同杉木母树及球果对后代遗传品质影响的研究

本文通过对不同杉木母树及球果对后代遗传品质影响的研究，结果表明，不同母树间不管是大果型、中果型、小果型球果或种子千粒重的大小，其苗期生长（苗高、地径）和幼林生长（树高、胸径）遗传品质差异都不显著，故在杉木母树或杉木优树选择时，不能以球果及种子大小而决定取舍，说明不同母树或其不同家系其后代遗传并不受球果或种子大小的约束，而是该家系遗传基因决定的．不同杉木母树或家系，其遗传品质主要取决于基因和环境因素共同作用的结果。     

“高巧”拌种防治马铃薯瓢虫技术的推广应用

针对二十八星瓢虫对马铃薯生产造成的危害，阐述了推广“高巧”拌种马铃薯的必要性，并对其试验示范、技术指导以及取得的经济和社会效益做了具体说明。     

Multi-objective dynamic detection of seeds based on machine vision

An approach to inspecting massive numbers of moving seeds was studied based on the techniques of dynamic inspection and machine vision. A progressive scanning CCD camera with external trigger function was used for real-time capture of dynamic images of seeds. The methods based on R channel of RGB (Red, Green and Blue) and region-dependent segmentation were adopted to reduce the data size of image processing and improve the efficiency of seeds inspection. All the seeds were sorted into four grades according to their morphological characteristics, such as surface area, perimeter, major axis, minor axis, circularity and eccentricity. The detection experiments indicated that the eligible ratio of the classifications was about 81.90% by this real-time inspection system.