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1.
猕猴桃属植物果实营养成分的研究 总被引:9,自引:2,他引:7
本文报道猕猴桃属(Actinidia)35个种类的果实的主要营养成分含量,猕猴桃果实维生素C的含量范围在12.54~1404.52mg/100gF.W,可溶性固形物含量范围在5.0%~15.8%,总糖含量在0.93%~9.06%,总酸含量在0.29%~2.57%。果实最适宜的糖酸比为5~7,果实干物质17种氨基酸含量范围在1.794%~9.04%。文章还讨论了猕猴桃果实营养成分含量与开发利用价值的关系、果实的糖酸比与果实风味品质的关系、果肉汁液颜色与营养成分含量的关系等。 相似文献
2.
甲型流感病毒PR8株两次注射治疗S180腹水瘤小鼠(6周龄),第一次注射后小鼠存活率为52%,间隔不同时间二次注射PR8,小鼠存活率均有不同程度提高,达60%—90%;小鼠植入S180细胞后第2、5、7、10天分别给予病毒治疗,其存活率分别是70%、35%、17.5%和0,对照组则100%死亡。为观察荷瘤鼠体内抗病毒抗体对疗效的影响,首先用PR8免疫小鼠,待产生抗体后植入S180细胞再行病毒治疗,小鼠存活率为62.5%;而未经病毒免疫过的荷瘤鼠,其存活率仅33.3%。PR8治疗“老”龄荷瘤鼠(10月龄),存活率为0,平均生存时间为22.3天,对照组为20.5天。环磷酰胺可增加病毒对瘤细胞的感染率,二者协同作用,能提高小鼠存活率。 相似文献
3.
空心莲子草口服治疗乳鼠流行性出血热病毒感染的研究 总被引:11,自引:0,他引:11
空心莲子草经口服治疗流行性出血热病毒(EHFV)感染的乳鼠。结果显示,5、7.5、10.0mg三个剂量组的存活率各为80%、72.2%和40.0%,平均存活天数(MTD)为56.5±0.9、53.5±1.1和41.5±2.7d,而病毒对照组的存活率为0.0%,MTD为26.3±0.8d,经该药治疗的感染鼠体内的EHFV抗原表达减少,而未经治疗的感染乳鼠体内的EHFV抗原则在全病程中都显示出较强的表述。治疗组抗病毒效果类似于病毒唑,且口服病毒唑毒性小。说明空心莲子草在体内对EHFV感染鼠有治疗作用。 相似文献
4.
广西龙虎山猕猴种群生态特征 总被引:4,自引:1,他引:4
1988~1995年,采用定点观察法和绝对计数与相对计数结合法对龙虎山猕猴种群生态作了调查研究。1990年核心区有猕猴14群,500只左右,猴群密度1.6群/km2,种群密度55.6只/km2.猴群大小平均33.8±23.1(n=6)只。一般每隔4~5年分群一次,猴群群体年均增长率14.8%,种群年均增长率为9.7%。猴群中成年猴性比为7.6±6.5(n=12),1~3岁组的性比为0.74±0.61(n=4),群内未成年猴比例为67.7±3.1%(n=12)。发情交配期最早11月12日,最晚次年1月20日,高峰期12月上旬,持续3个月.产仔期最早4月1日,最晚8月14日,高峰期5月上旬,持续时间4个半月.繁殖率45.5%~100%,平均75.4±13.2%(n=21)。新生猴死亡率较低,新生猴性比(雌:雄)平均0.74±0.34(n=5)。 相似文献
5.
金华北山区部分绿色蔬菜的营养成分和有害物质测定 总被引:5,自引:1,他引:4
对马铃薯、菜豆、萝卜和番茄等4种绿色蔬菜进行营养成分和有害物质的全面测定。结果表明:绿色蔬菜具有高营养、无毒的特点。(1)4种绿色蔬菜的含钙量分别为一般蔬菜同一品种的240%、198.5%、163.7%和157.8%,含铁量分别为17.4倍、8.7倍、10.7倍和12.7倍,含磷量分别为118.2%、102%、163.6%和177.8%,并具有较高的镁、锌、铜和锰等元素的含量。(2)4种绿色蔬菜的镉、砷、汞、氟、六六六、DDT、敌敌畏、乐果、马拉硫磷、对硫磷、甲胺磷、杀螟硫和倍硫磷等13项有害物质全部符合绿色食品标准。(3)4种绿色蔬菜的VB1含量分别增加20%、22.2%、16.7%和6%,VB2分别增加30%、12%、135%和26.7,Vc分别增加8.6%、68.9%、12.1%和18.1%,胡萝卜素分别为一般同种蔬菜的16倍、2.9倍、13.5倍和4.5倍。(4)其蛋白质含量也分别增加18.5%、13.9%、7.5%和30%,灰分分别为2.08倍、3.15倍、2.85倍和2.96倍,总糖分别为一般同种蔬菜的91%、101.1%、191.3%和95.2%,粗纤维分别为113.3%、89.2%、86.7%和105%。 相似文献
6.
三化螟危害损失与防治指标的研究 总被引:4,自引:1,他引:3
2代三化螟平均每块卵为害 11.25个枯心丛,34.75个枯心株; 3代每块卵平均为害 7.95个白穗丛,14.55个白穗株。模拟为害与水稻产量损失的关系:2代Y=s8060.5-2181.5X,Y-水稻产量(kg/hm2),X-枯心株率,水稻耐害补偿作用明显,枯心株率与产量损失率之比1:0.27;3代Y=7654.2-3902.2X,Y-水稻产量(kg/hm2),X-白穗株率,水稻表现一定的耐害补偿能力,白穗株率与产量损失率之比1:0.51。三化螟危害允许水平1.28%。防治指标:2代卵块4875万块/hm2,3代卵块6519块/hm2。 相似文献
7.
墨龙系列酒中氨基酸组分评价 总被引:1,自引:0,他引:1
采用岛津L_(c-bA)高效液相色谱仪测定墨龙醇、麒麟玉液、猕猴桃乳酒中13种氨基酸总量分别为508.2、491.7、247.4mg/100ml,其中12种人体必需、半必需氨基酸与10种药效氨基酸的含量和分别占总含量的59.7%、65.5%、76.2%和43.8%、48.1%、47.5%。 相似文献
8.
阴道加德纳菌生物型与细菌性阴道病的关系 总被引:4,自引:1,他引:3
对120例细菌性阴道病患者和90例正常对照组进行阴道加德纳菌的分离鉴定,同时采用Piot分型法对分离出的93株Gv进行生物分型,结果显示BV患者Gv的检出率(59.2%)明显高于正常对照组(24.4%),P〈0.01。93株Gv中,8个生物型全检测到,其中1型23.7%,2型18.3%,4型32.3%,6型10.8%,3型和5型均为5.4%,7型和8型为2.2%。BV患者主要为1、2、4型,显著高于正常对照组(87.3%和31.8%,P〈0.01)。 相似文献
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采用小集水区定位研究方法,研究分析了尖峰热带山地雨林天然更新林生态系统5个水文年水分循环的动态特征。年降水量分配在169.8~350.0cm,林冠层截留率年变化11.0%~17.6%范围,旱、雨季变化在14.4%~31.4%和11.5%~19.4%之间;其中树干茎流率年平均为7.1%,雨季平均为6.8%,雨季月变化在2.2%~12.4%。总径流动态特性以每年7~9月的增加响应较快,11月至翌年2月径流衰减缓慢。水量平衡参数为:年均降水量2668.3mm,14.3%为冠层截留,46.7%为径流输出,53.3%为蒸发散失。土壤渗透水性能为,70cm厚土层,当雨量小于30mm,进入土层的水分全部被吸持,雨量在35~50mm,25%的降水量渗漏,雨量在50~100mm内,26.5%~56.3%的降水量下渗,其吸持和滞留贮存水性能与土壤的结构、持水量、孔隙度密切相关。 相似文献
10.
香鼬的栖息地选择、觅食和育幼行为 总被引:11,自引:4,他引:7
香鼬(Mustelaaltaica)喜栖于人类居住区附近的高寒草甸草场,主要以高原鼠兔(Ochotonacurzoniae)为食,其数量分布与高原鼠兔的密度分布成正相关。在高原鼠兔的繁殖盛期,香鼬主要捕食鼠兔幼体,每只成体平均每天捕获鼠兔6.2只,相当于每100克体重日获取食物重量273.5克,在高原鼠兔的繁殖后期和非繁殖期,每只成体平均每天捕获鼠兔2.75只,相当于每100克体重日获取食物重量296.3克。繁殖期育幼任务全部由雌性成鼬承担,幼鼬从7月初开始地面活动,8月初开始扩散。 相似文献
11.
E A Nechaev I D Kosachev V I Kocherovets M V Epifanov 《Antibiotiki i khimioterapii͡a》1990,35(10):21-24
Purulent wounds in 88 victims of the Armenian earthquake with the syndrome of long-term squeezing were examined microbiologically and the experience with using antimicrobial drugs for their treatment was analyzed. In all the cases microbial associations were detected, coliform and nonfermenting gram-negative bacilli, enterococci, anaerobes and yeast-like fungi being isolated from 80, 20, 15 and 25 per cent of the patients respectively. 130 bacterial strains were studied in detail. 80 to 100 per cent of the bacterial isolates were resistant to the antibiotics routinely used in surgical practice, i.e. benzylpenicillin, tetracycline, levomycetin, kanamycin, cephalothin and cefazolin and highly sensitive to new antimicrobial drugs belonging to ureidopenicillins (mezlocillin), quinolones (ciprofloxacin) and cephalosporins of the 3rd generation (cefoperazone and ceftazidime). Retrospective estimation of the antibiotic therapy revealed its inadequacy in 55.7 per cent of the patients for the most part because of the isolates resistance. The 19 variants of the antibiotic use prescribed by the physicians mainly included penicillins, aminoglycosides and their combinations (in 67.2 per cent of the cases). The use of the highly efficient drugs of the groups of ureidopenicillins and quinolones was extremely rare which was likely due to lacking of information on the drugs. 相似文献
12.
N A Dmitrieva 《Tsitologiia》1986,28(7):745-748
The developing taste buds of vallate papillae were studied with electron microscope in rats during the first 7 days after birth. Two types of cells--light and dark--are identified in the taste buds of a one day old animal. The apical parts of dark cells are characterized by numerous dark granules. A distinguishing feature of light cells is the presence of synaptic contacts with afferent intragemmal nerves. On the 4th day of development on the top of the apical parts of the cell, a microvillar apparatus is seen to form, which does not yet communicate with the oral cavity. On the 7th day, basal cells appear in the taste buds. Some of these cells are seen mitotically dividing. The differentiated microvillar apparatus now communicates with oral cavity. The structure of the taste buds is getting similar to that in the adults. The structural and functional peculiarities of the developing taste buds are discussed in association with the period of ontogenesis under consideration. 相似文献
13.
T L Marshak M Sh Avrushchenko 《Biulleten' eksperimental'no? biologii i meditsiny》1986,102(10):477-479
The changes in the size of Purkinje cell (PC) nucleolus in the lateral and medial cerebellum zones were studied in dogs with different degree of neurologic status recovery after clinical death of various etiology and duration. PC always possess one nucleolus in the control and experimental groups. In the case of complete neurologic status recovery of animals the area of PC nucleolus increases in both zones studied, irrespective of the cause of clinical death. In the case of neurologic disorders the increase in PC nucleolus area is clearly expressed only in the medial zone of the cerebellum, being insignificant in the lateral zone. It is suggested that adaptive characteristics of PC are distinct in the two compared zones, which leads to greater PC vulnerability in the lateral zone during deep hypoxia. 相似文献
14.
This study determined the optimum number of tubules to be counted per testis cross section, and the number of animals per treatment group, when changes in stage frequencies in the cycle of the seminiferous epithelium are criteria for assessing effects of treatment on spermatogenesis. A data base of 9,672 observed and staged tubules was collected from testicular cross sections of 15 Sprague-Dawley rats. A significant variation between animals was found for the frequencies of Stages I, II, IV, VI, VIII, and XIII. Computer simulation was used to randomly select different combinations of animal and tubule numbers from the observed data. Stage frequency means from each simulation experiment were compared statistically to observed mean frequencies. A model that used data from all 14 stages was analyzed. The following conclusions were made: a) a minimum of 200 tubule cross sections/testis is recommended for estimating stage frequencies; b) for a fixed number of tubules scored, the number of animals sampled is more important than the number of tubules per animal in reducing variance; c) to detect a difference of 2 standard deviations from the mean with a 2% error rate and examining 200 tubules/testis, at least 12 animals must be used per group when assessing all 14 stages; d) when individual stages are examined using 10 animals per group, only Stage VII has 80% or greater power of test (alpha = 0.05) to detect a frequency difference; e) pooling stages into 3-4 groups is recommended to improve the power of detecting a treatment difference. 相似文献
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E I Mukhin 《Zhurnal vysshe? nervno? deiatelnosti imeni I P Pavlova》1985,35(3):449-456
In chronic experiments on cats contribution of the thalamic mediodorsal nucleus to the organization of the processes of generalization and abstraction was studied by means of alternation method. Electrolytic ablation of the nucleus retarded the learning and impeded the initial stages of formation of the generalization function. Mechanisms of thalamic dementia are discussed. 相似文献
20.
A G Zara?ski? 《Ontogenez》1991,22(4):365-374
Experiments were performed using X. laevis embryos during gastrulation and neurulation (stages 10, 11 1/2, 12 1/2, 13 1/2, 15 and 18). Part of presumptive epidermis and lateral plate mesoderm was removed, and embryos raised until stage 25. The size of axial structures (notochord, somite mesoderm, central nervous system) was determined using serial histological sections and compared with that of control embryos. In experimental embryos, the size of axial structures was decreased. Until a specific stage of development, close correlation was found between the volume of embryonic compartment corresponding to a particular, structure and the volume of presumptive epidermis and lateral plate mesoderm. This stage is individual for each axial organ: middle gastrula (stage 11 1/2) for notochord, late gastrula (stage 12 1/2) for somite mesoderm, and late neurula (stage 18) for central nervous system. This data suggest that differentiation pattern of ecto-mesodermal rudiment is subject to regulation during gastrulation-neurulation, and subdivision of ectoderm and mesoderm into axial and non-axial tissues is a self-organizing process. 相似文献