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Search Results: 1 - 10 of 370320 matches for " <br>林善海 "
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粘虫迁飞模拟试验
胡伯,
生态学报 , 1983,
Abstract: 粘虫是我国禾谷类作物的主要迁飞性害虫之一。近十多年来,我国昆虫学者在迁飞问题上作了大量研究工作。迄今已基本摸清了我国东部粘虫的远距离迁飞、迁飞方向及路线(林昌善等,1963;林昌善、张宗炳,1963),分析了粘虫迁飞的生理生态机制(马世骏,1963)和迁飞与气流场的关系(林昌善,19632赵圣菊等,1981),开展了一些粘虫飞行的观察和试验(李光博等,1964;黄冠辉等,1966)。
Effects of environmental factors on growth and sporulation of Exserohilum rostratum causing banana leaf spot disease
环境因素对香蕉叶斑病菌喙突脐蠕孢生长和产孢的影响

LIN Shan-Hai,HUANG Si-Liang,CEN Zhen-Lu,QIN Li-Ping,FU Gang,LI Qi-Qin,<br>,黄思良,岑贞陆,覃丽萍,付岗,黎起秦
菌物学报 , 2013,
Abstract: 为进一步明确香蕉叶斑病菌喙突脐蠕孢的生物学特性,调查了部分环境因素(碳氮源、植物成分培养基)对供试菌株(CLER09、D087和JL05)的营养生长和产孢的影响。结果显示,分生孢子主要先从基部萌芽,在28℃下约培养10h后出现两端萌芽;供试菌株对测试的20种碳源及26种氮源显示相似的生长反应,均可利用除菊糖外的测试碳源及氮源进行营养生长和产孢;测试的6种植物成分培养基对供试菌株的营养生长效果皆优于PDA培养基;除燕麦培养基外,其余5种培养基对菌株CLER09和D087的产孢作用均优于PDA培养基;测试的6种培养基对菌株JL05的产孢作用均优于PDA培养基。不同植物成分培养基对该菌分生孢子形态影响较大,以米糠、象草培养基对菌株D087 和JL05的分生孢子长度和玉米粉培养基对菌株CLER09的分生孢子宽度的增长效果最为明显。
A Study on Determining Age and Sex of Hainan Eld''''s Deer by Use of Pellet Morphometry
用粪粒外部形态指标鉴定海南坡鹿的性别与年龄

LI Yu-chun,MENG Yi-hang,GAO Hai-bo,SUN Rui-fen,ZHANG Hai,LIN Xian-mei,LI Shan-yuan,<br>李玉春,蒙以航,,孙蕊芬,,贤梅,
动物学研究 , 2008,
Abstract: 利用粪便形态指标鉴定有蹄类动物的性别和年龄对研究不同性别年龄个体的生态学和性别分离具有重要价值。利用2006年3月在海南大田国家级自然保护区采集的145头(次)已知性别和年龄组的野生海南坡鹿(Cervus eldi hainanus)粪便4006粒,将坡鹿划分为成年雄鹿、成年雌鹿、亚成年雄鹿、亚成年雌鹿和幼鹿5个性别年龄组,使用逐步判别分析和聚类分析对粪粒的4项直接测度指标(干重、体积、长轴长、短轴长)以及2项间接测度指标(长短轴比和椭球形状指数)进行分析。结果表明:逐步判别分析对海南坡鹿粪粒的性别年龄组正判率为成年雄鹿76.17%、成年雌鹿42.22%、亚成年雄鹿34.94%、亚成年雌鹿40.46%、幼鹿79.34%,聚类分析的判别率为成年雄鹿19.48%、成年雌鹿20.02%、亚成年雄鹿37.37%、亚成年雌鹿42.82%、幼鹿91.50%。利用粪粒形态判别海南坡鹿的性别年龄组最可靠的是幼鹿,次之为成年雄鹿。利用粪粒形态判别海南坡鹿的性别年龄组可以应用于以取样原理进行的群体水平研究,但个体水平上的性别和年龄鉴定由于判别误差较大而难以应用。
A Study of the Formation Mechanism of the Vientiane Potash Deposit Based on Phase Chemistry
基于相化学研究老挝万象钾镁盐矿床形成的机制

CHENG Huai-de,MA Hai-zhou,SHAN Fa-shou,GAO Dong-lin,LI Shan-ping,WANG Ming-xiang,TANG Qi-liang,<br>程怀德,,山发寿,高东,,王明祥,唐启亮
地球学报 , 2010,
Abstract: The Vientiane potash deposit in Laos is a typical marine elastic-type MgSO4-absent potash deposit.This potassium-magnesium salt deposit belongs to chemical sedimentary evaporation deposit,whereas the ancient sea water evaporation and salt-bearing strata belong to Palaeogene Tagong Formation.The study of the formation mechanism of this ore deposit is quite important because of its absence of sulfate and carbonate.In this paper,the characteristics of ancient sea water during the formation Of the potash deposit was studied,the physical-chemical peculiarities of potassium-forming brines were analyzed by using the phase diagram,the formation mechanism of this mineral deposit was investigated based on the chemical foundation of its formation conditions.The composition of the seawater has changed rapidly since Phanerozoic,and the prolonged mineralogical changes of marine non-skeletal limestone and potash evaOorates occurred in a phase on a 100-200 Ma.time scale;therefore the period of "aragonite seas"was synchronous with MgSO4 evaporates,and the period of "calcite seas" was synchronous with KCl evaporates.Based on the increasing Br content of basal halite since the Early Cretaceous,the authors deduced an extensive change in the composition of seawater: the period of "calcite seas" existed during the Late Cretaceous and the Early Tertiary. The above change in composition constituted the physical-chemical condition for the absence of sulfate and carbonate in the Vientiane potassium-magnesium salt deposit. The mother liquid of potassium-forming brines seemed to be high-magnesium and low-potassium brines, as shown by the NaCl-KCl-MgCl2-H2O and NaCl-KCl-MgCl2-CaCl2-H2O two system phase diagram. In the evaporation process of the mother liquor, the route of the crystallization directly moved from the sodium chloride phase zone to the E point or the saturated line of sodium chloride and carnallite, but did not pass the saturated line of sodium chloride and potassium chloride, because of the mixing of the original transgression mother liquor with the residual high-magnesium mother liquor. As a result, the potassium chloride is rarely existent or virtually nonexistent in the potash deposit. The mother liquid of potassium-forming brines entered the carnallite phase zone due to the participation of the external CaCl2-type liquid, and the tachydrite was formed during the evaporation process.
THE ENVIRONMENTAL CARRYING CAPACITY OF HUMAN POPULATION IN CHINA
论我国人口容纳量

Wu Liming,<br>吴聿明,
生态学报 , 1989,
Abstract: Based on the idea of ecological niche and survival space which are employed by ecologists to study ecological problem, we have analysed the occupation structures of our population status (See Table 1 )and compared with that of industra-lized countries (See Table 2). We have found out that our occupational strutures are extremely teratological and in a backward situation, with a very high percentage(72-74% )of total population engaged in land agricultural activities and more over with a surplus cf man power, However, the farm production yield and labor efficiency are low and the growth rate is rather slow except in recent years.Such structures are great handicap for further conversion of resources into human food of higher calories.From the food resources point of view, upon further analysis it is apparent that China is rich in natural grass land and wide in marine coas'.al areas.Nevertheless, such vast land area are not yet fully ultilized (See especially Table 3), yet they might be converted into resources for protein and other uses which can cope with the increasing human population. From the resource point of view,the whole paper gives full disccusion and all reasons,China is able to feed 1.5 billion people within our envionmental conditions, rich resources, new agricultural technology and further educational investment.
不同食料植物对美国白蛾生长发育和繁殖的影响
,康智,,秦绪兵,张秋梅,
应用昆虫学报 , 2012,
Abstract: 2010年6月至7月,在室内研究了美国白蛾hyphantriacunea(drury)第1代幼虫对洋白蜡、欧美107号杨、法桐和白榆的取食量及不同的食料种类对美国白蛾生长发育和繁殖的影响。结果表明,美国白蛾对受试的各树种的取食量以洋白蜡为最多,完成一代平均每头可以取食2.21g,其次为欧美107号杨1.95g,再次为法桐和白,分别为1.85g/头和1.68g/头。3龄后幼虫对不同的寄主呈现出一定的偏好性,特别是5龄和6龄幼虫对不同的寄主的取食量表现出显著差异。不同的食料植物对美国白蛾幼虫和蛹的发育历期、存活率、蛹重、成虫寿命、产卵量等有显著影响。取食法桐对其生长发育和繁殖表现出明显的不利性,主要表现为幼虫期延长、蛹重减轻、单雌产卵量降低。
大豆肽的制备及其在养殖业中的应用
陈济琛,,,新坚
大豆科学 , 2009, DOI: 10.11861/j.issn.1000-9841.2009.02.0341
Abstract: 大豆肽是大豆蛋白经水解得到的低分子肽混合物,具有比大豆蛋白更优越的理化特性和生理功能,在很多领域引起广泛关注。综述大豆肽的制备方法及其在养殖业中的应用现状,为大豆肽应用于饲料添加剂提供参考。
新型功能性环状聚(ε-己内酯-co-α-氯代-ε-己内酯)的合成
高超,刘超,姚军,张勇,雷良才,
高分子学报 , 2013, DOI: 10.3724/SP.J.1105.2013.13102
Abstract: 借助活性开环聚合反应和紫外光辐照下的分子内交联反应合成新型功能性环状聚(ε-己内酯-co-α-氯代-ε-己内酯)(cP(εCLcoαClεCL)).首先,利用Baeyer-Villiger氧化法将α-氯代环己酮在间氯过氧苯甲酸(mCPBA)的作用下制得功能性单体α-氯代-ε-己内酯(αClεCL).然后,功能性单体αClεCL和ε-己内酯(εCL)在环状引发剂2,2-二丁基-2-锡-1,3-二氧环庚烷(DSDOP)的作用下,进行活性开环聚合反应获得活性环状无规共聚酯(LCP(εCLcoαClεCL))前体,该前体的分子量可以通过改变单体与引发剂的摩尔配比来控制.当单体完全转化后,该活性环状前体再引发反应性单体α-(1-丙烯酰氧乙基)-ε-己内酯(αAEεCL)进行嵌段聚合反应,合成了在活性中心附近带有不饱和双键的功能性环状共聚酯,即活性环状聚(ε-己内酯-co-α-氯代-ε-己内酯)-b-(α-(1-丙烯酰氧乙基)-ε-己内酯).最后该活性环状共聚酯在紫外光辐照下,反应性单体单元中的双键发生分子内交联反应,制得稳定的不含有机锡的新型功能性环状无规共聚酯cP-(εCLcoαClεCL)(Mn,NMR=32400).采用SEC,NMR以及DSC等技术对聚合物的结构和性能进行表征,SEC和黏度表征结果显示新型功能性cP(εCLcoαClεCL)与分子量相同的线型共聚酯相比具有较小的动态力学体积,DSC表征结果显示共聚酯环化的结果使其熔点和结晶度下降.该方法的突出特点是能够高效地合成具有高分子量的环状聚合物.
山东鑫汇金矿厚度突变矿体采矿方法的选择与应用
白复锌,,张永,安智
黄金科学技术 , 2011,
Abstract: 根据鑫汇金矿矿体厚度变化系数大的特点,结合矿块的实际地质赋存状况,综合选用水平分层嗣后充填采矿法和空场采矿法对矿块进行开采,取得了较好的效果,具有加大推广应用价值。
抗旱营养调节剂“旱地龙”对甘蔗矿质营养和光合特性的影响
周主贵,陆国盈,,满若君
河南农业科学 , 2013,
Abstract: 为进一步探讨"旱地龙"对甘蔗抗旱增产的调节作用机制,研究了喷施不同质量浓度"旱地龙"对甘蔗品种新台糖22号(ROC22)叶片矿质营养和光合指标的影响。结果显示,喷施"旱地龙"能明显提高甘蔗叶片的矿质营养含量,"旱地龙"喷施质量浓度以3g/L、2g/L、4g/L分别对提高甘蔗叶片N、P、K含量效果最好,分别比CK(0g/L)提高0.13、0.04、0.12个百分点。在光合指标方面,以"旱地龙"3g/L喷施处理对提高叶绿素含量和4g/L喷施处理对提高气孔导度作用较大,分别比CK增加0.19mg/g和0.05μmol/(m2·s);喷施"旱地龙"各处理的净光合速率和蒸腾速率在整个伸长期均高于CK,以4g/L处理作用较大,分别比CK增加4.94μmol/(m2·s)和0.42mmol/(m2·s),气孔导度与净光合速率的变化趋势一致,以"旱地龙"4g/L喷施处理最高,为0.32μmol/(m2·s)。可见,喷施"旱地龙"可有效促进甘蔗对N、P、K等矿质元素的吸收,提高叶片叶绿素含量,促进光合作用。
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