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  total
    CELL SEEDLING CULTURE AND TOTAL NITROGEN AND AMINO ACID ANALYSIS IN PORPHYRA YEZOENSIS
    条斑紫菜细胞苗培养及氮量、氨基酸分析
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    PREDICTION OF THE TREND OF TOTAL MERCURY AND METHLMERCURY POLLUTION OF THE FISHES IN THE SONGHUA RIVER
    松花江鱼类汞与甲基汞污染趋势预测
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    Effect of Different incubation Time on SOD Total Activity of Artemia Cysts with Shell
    不同保温时间对带壳卤虫卵SOD活力的影响
短句来源
    STUDY OF TRANSFORMING TOTAL DNA OF Coarias sp. TO Leiocassis longirostris GUNTHER
    胡子鲶DNA转化长吻鮠鱼的初步研究
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    Rapid Determination of Total Phosphorous in Water Body by Hydrogen Peroxide Treatment
    过氧化氢消解法快速测定水中的
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  general
    General tropic state index of PH, SD, TP, TN, BOD, COD and chla suggests that water body of Miyun Reservoir already belongs to middle nutrition and there is the tendency to eutrophicate.
    pH、透明度(SD)、氮(TN)、磷(TP)、生化需氧量(BOD)、化学需氧量(COD)、叶绿素a(chla)的营养状态指数综合评价表明,密云水库水体为中营养型,并且出现了向富营养发展的趋势。
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    The optimum general energy of the most satisfactorydiet is 320--340 kcal/100g feeds, protein 46. 6%, fat 3--5%, mineral 2--3%. car-bohydrate 21--28%.
    较优饲料的能为320~340千卡/百克饲料,蛋白质为46.6%,脂肪为3~5%,无机盐为2~3%,糖为21~28%。
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    102 species and subspecies of fresh water fish have been identified,belonging to 9 orders,17 families and 65 general,accounting for 89 % of all the fresh water fish species of Shandong province.
    淡水鱼类共鉴定出 10 2种和亚种 ,隶属于 9目 17科 65属 ,占山东省淡水鱼类种数的 89%。
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    The young common carp was fed diets with L Carnitine added of mass fraction 5×10 -5 ,10 -4 ,1 5×10 -4 ,2×10 -4 ,2 5×10 -4 to compare the general apparent digestibilities of the diets .
    用分别添加了质量分数为 0 ,5× 10 -5,10 -4 ,1.5× 10 -4 ,2× 10 -4 ,2 .5× 10 -4 纯肉毒碱的饲料饲养相同的鲤鱼春片鱼种 ,比较这些鱼对每种饲料的 (表观 )消化率 .
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    (4) In general, the sex ratio of 7 populations was 50.7%(♀): 49.3%(♂), male turtles grow faster than female ones by 8.4%(t>0.01). 
    (4)7群体雌、雄性比平均为:50.7%∶49.3%。 雄性较雌性增重快8.4%(t>0.01)。
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  gross
    Withthe diets containing high gross energy levels (21.39MJ/kg, 22.81MJ/kg), WGR, PDR and ERR of juvenile decrease and FCE increase as dietary protein contents increased, indicating low protein requirement of juvenile yellow catfish with diets of high energy levels.
    能较高(21.39MJ/kg、22.81MJ/kg)时,蛋白质含量增加,黄颡鱼的增重率、蛋白质沉积率和能量保留率呈下降趋势,饲料系数呈上升趋势,表明饲料能提高,黄颡鱼对蛋白质需要量降低。
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    The ECE of total energy input (including solar and supplementaty energies)converted into total energy output of fish is 0.19, 0.24 and 0.31%, and that of solar radiation energy converted into gross or net primary productivity is 0.76, 0.90 and 0.96% or 0.61, 0.72 and 0.77% respectively.
    投入能(太阳辐射能+辅助能)转移到鱼的产出能转换率分别为0.19、0.24、0.31%; 太阳辐射能转移到毛和净初级生产力的能量转换率分别为0.76、0.90、0.96%和0.61、0.72、0.77%;
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    The water environment and hydrobiant resources in Zhangdu Lake were surveyed in 1991. The lake had an average water depth of 1. 31 m, an average transparancy of 31. 3 cm and gross nitrogen and phosphorus concentrations of 1. 004mg·L-1 and 0. 188 mg·L-1 respectively.
    1991年对湖北省新洲县涨渡湖的水环境和水生物资源进行了调查。 该湖平均水深1.31m,透明度平均31.3cm,氮、磷含量分别为1.004,0.118mg·L-1。
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    The conversion efficiency of dry body weight, protein and energy increased with ration size, the average gross conversion efficiency was 33.77%, 33.89% and 33.03%.
    随摄食水平增加 ,干重、蛋白质和能量的转化效率升高 ,平均转化效率分别为 33.77%、33.89%和 33.0 3%。
短句来源
    Using Cr2O3 as an indicator,the apparent digestibilities of protein,amino acid and gross energy of diet for grey mullet were determined at different salinities.
    以Cr2O3为指示物,设计两组试验测定鲻鱼MugilcephalusL对饲料粗蛋白、氨基酸和能的表观消化率。
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  total
Equivalently, ifCn, is the total space for a principalGa-bundle over some open subset ofCn-1 then the bundle is trivial.
      
For the real hyperbolic space we can get a total sampling formula.
      
On the basis of total acid hydrolysis, methylation analysis, periodate oxidation and NMR studies (1H and 13C) the structure of the repeating unit of the polysaccharide was assigned and indicated only α-(1→4) linked Glucan.
      
This has brought the total of licensed anti-HIV drugs to nineteen.
      
Hepatic glutathione, lipid peroxides, glutathione peroxidase, alcohol dehydrogenase, aldehyde dehydrogenase, glycogen and total protein in liver were also significantly altered.
      
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  general
Using these monomial bases we prove that the image of the transfer for a general linear group over a finite field is a principal ideal in the ring of invariants.
      
The main idea for our approach relies on a study of the boundary theory we established for the general CAT(-1) spaces.
      
In general the group ring of ann-valued group is not ann-Hopf algebra but it is for ann-coset group constructed from an abelian group.
      
We prove a more general version of a result announced without proof in [DP], claiming roughly that in a partially integrable highest weight module over a Kac-Moody algebra the integrable directions from a parabolic subalgebra.
      
Here we provide certain conditions (more general than those in [Ka1]) which guarantee preservation of the topology under a modification.
      
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  gross
The compounds were fully characterized by spectral and elemental analyses, and were tested for their effect on gross behavior, antireserpine and anorexigenic activity.
      
No effect was observed on gross behavior and some of them showed fluoxetine like antireserpine and anorexigenic activity.
      
This not only answers a question of Chen, Archdeacon and Gross, but also generalizes the previous known results.
      
Furthermore, the max is above 70% of gross rainfall.
      
The results showed that forest restoration stage had no significant effects on gross nitrification rates or denitrification rates (One-way ANOVA (analysis of variance), p >amp;lt; 0.05).
      
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  always
Although Spin0 () is usually reducible, we show that a Casimir element for always acts scalarly on it.
      
By using some topological arguments we prove thatF is always surjective.
      
However, we show that the algebra of invariants is always the p-root closure of the algebra of polarized invariants.
      
Using the matrix approach we prove that the sequence of sampling functions is always complete in the cases of critical sampling and oversampling.
      
We show how to reconstruct functions satisfying the scaling equations above and show that ?2, …, ?q always constitute a tight frame with constant 1.
      
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The long-snout catfish—Leiocassis longirostris (Günther) has long been a valuablecommercial fish in the Yangtze valley,yet practically no information on its biologicalfeatures can be obtained from the literature.Age-composition,growth,spawning,feeding and the problem of maximum sustained yield of this fish have recently beeninvestigated for the first time.As material for age-determination,the pectoral spine,urohyal and vertebra havebeen used for comparison,and the first-named structure is found to be more suitablefor...

The long-snout catfish—Leiocassis longirostris (Günther) has long been a valuablecommercial fish in the Yangtze valley,yet practically no information on its biologicalfeatures can be obtained from the literature.Age-composition,growth,spawning,feeding and the problem of maximum sustained yield of this fish have recently beeninvestigated for the first time.As material for age-determination,the pectoral spine,urohyal and vertebra havebeen used for comparison,and the first-named structure is found to be more suitablefor this purpose.Formation of annulus in the pectoral spine occurs in the middleof June to July.The relationship between the age and the body length can be expressed by theequation L_t=980[1-e~(-0.24(t-0.22))].Owing to the fact that individuals of L.longirostris over 78.5 cm in length havea body form much more elongated than those under this length,the weight-lengthrelationship is better denoted by separate equations:For individuals under 78.5 cm in length:W_t=10730[1-e~(-0.24(t-0.22))]~(2.9914);For those over 78.5 cm in length:W_t=8670[1-e~(-0.24(t-0.22))]~(2.085).The relationship between the radius in the section of the pectoral spine and thelength of body is in linear regression.The length back-computed from the radius ofthe annulus generally coincides with the actual measurement of the body length,although there is indication of the so-called“anti-Lee phenomenon”in such back-computations.First maturity of L.longirostris occurs in individuals varied from 45.5 to 55.5cm in length and from 3 to 5 years of age.After the first maturity,reproductionrecurs in the successive years.It is found that the region from Chiengli to Hoshuiin the Yangtze River is the regular spawning ground.The individual absolute fecundity varies from 1,184 to 145,410 (69,264 on theaverage).Its relation to body length is expressed asR=0.0003311 L~(2.3613).The comparative spawning power is highest at 4 and 5 years old.The reproductivestock is composed of many age-classes,but the re-spawners are always dominant over the new spawners in number.L.longirostris is a predacious fish with a broad recipe,over 40 kinds of animalsbeing recovered from stomach contents.Small fishes of various kinds and shrimpsform the chief components.The total mortality of L.longirostris is calculated to be 0.425,with a naturalmortality of 0.235 and a catching mortality of 0.19.The actual harvestable age atpresent is from 4-years old onwards.The problem of maximum sustained yield isdiscussed.If the minimum harvestable age is to be raised to 5 years old and at thesame time fishing effort be intensified so as to elevate the fishing mortality to 0.30,the total yield of this fish might be expected to increase by 14 per cent,while thesize of the reproductive stock might still maintain a state of stability.

本文研究长江中下游长吻的种群生态学特性并进行渔业生物学分析。胸鳍棘、尾舌骨及脊椎骨都可用作年龄鉴定材料。用Brody-Bertallanffy的公式表述体长、体重与年龄的关系。调查生殖特性并分析比较产卵力及产卵群体的结构类型。以食物出现率和重量法评价各类食物在食料中的作用。由渔获物统计资料计算种群的自然死亡率和捕捞死亡率。通过比较各种捕捞强度和最小捕捞规格的不同的渔获量和繁殖群体的相对数量,提出获得最大持续渔获量的捕捞强度和最小捕捞规格。

Plagiognathops microlepis Bleeker,an economic freshwater fish (Xenocyprininae,Cyprinidae) widely distributed in China,is a favorite with our broad masses,but itsnatural population is not large and the yield of this fish is low in many waters.As a result of our experimentation and research,now we can successfully conductartificial propagation and culture of this fish on a large scale.We have already stoc-ked a reservoir with a large number of its sizable fingerlings,in anticipation of inc-reasing yield in the...

Plagiognathops microlepis Bleeker,an economic freshwater fish (Xenocyprininae,Cyprinidae) widely distributed in China,is a favorite with our broad masses,but itsnatural population is not large and the yield of this fish is low in many waters.As a result of our experimentation and research,now we can successfully conductartificial propagation and culture of this fish on a large scale.We have already stoc-ked a reservoir with a large number of its sizable fingerlings,in anticipation of inc-reasing yield in the coming years.For pond-farming,it has been demonstrated that the participation of Plagiog-nathops in polyculture with the team of“domestic”carps does not interfere with thenormal growth of the latter,and the total yield of a pond is actually increased byabout 10%.The fish is easy to catch (by seining);this makes it a desirable objectfor the practice of recurrent stocking and“skimming”within a year in ponds in-tended for bumper yield.The juveniles as well as the adults of Plagiognathops feed on humus,bottomdetritus and benthic algae,which are not much utilized by the traditional“domestic”fishes.Growth rate of Plagiognathops is rather high during the first two years of life:young fish 6 months of age weigh about 100—150 g,those of 18 months old,above250 g (450 g for the largest specimen);the average weight of 2-year-old individuals is500 g,a size ready for the market.Owing to its tastiness and relatively more edibleparts,fish even of the grade of 100—150 g are readily acceptable to customers.The principal results of our experiments on the rearing of this fish,togetherwith the relevant biological data obtained,are given in this paper.

细鳞斜颌鲴是在我国分布较广而又为群众所喜爱的一种野生经济鱼类。这种鱼在某些天然水体中可成为优势种群,产量较大,最高可以占渔获量的50%以上。但有许多水体中却没有这种鱼或数量不大。通过试验和研究,我们已能对这种鱼进行大规模的人工繁殖和苗种培育,近年来,已将数万尾大规格鱼种投放到一原来只投放“家鱼”(泛指鲩、青、鲢、鳙,以下均同)的水库中,并将检验其增产效果。实践证明斜颌鲴在池塘中与现有“家鱼”混养时,非但不影响“家鱼”的生长,并可使池塘产量增加10%以上;原因是这种鱼主要以其他养殖鱼类尚未利用或未能充分利用的腐屑、腐泥和着生藻类为食物。该鱼头两年生长较快,两周年可达一市斤左右,并第一次达到性成熟,这种规格的鱼上市就是经济价值高的优良食用鱼。因其在池塘中易于捕捞,故也是丰产塘中轮捕轮放的好对象。按普通“家鱼”种的培育方法当年鱼可养成4寸左右,第二年底都能在半斤以上,大的可达8两半。由于该鱼头小肉多而味美,故即使2—3两重的鱼在市场上也受到顾客的欢迎。本文还介绍了养殖这种鱼的方法及其有关的生物学资料,并讨论了在天然水体中促使这种鱼增产的可能途径。

The famous blunt-snout bream (Megalobrama amblycephala Yih) was introducedinto the Hwamahu Lake first in 1960.It has been spawning regularly in the Lakesince then.But the survival rate of its fry seemed to be extremely low,and annualcatch of this fish soon dwindled to insignificance.Renewed effort to resume its yieldhas been made through mass release of fingerlings (8—11 cm in total length) intothe Lake year after year since 1972,with the result that its annual catch rapidly roseand hit a record of 20 tons in...

The famous blunt-snout bream (Megalobrama amblycephala Yih) was introducedinto the Hwamahu Lake first in 1960.It has been spawning regularly in the Lakesince then.But the survival rate of its fry seemed to be extremely low,and annualcatch of this fish soon dwindled to insignificance.Renewed effort to resume its yieldhas been made through mass release of fingerlings (8—11 cm in total length) intothe Lake year after year since 1972,with the result that its annual catch rapidly roseand hit a record of 20 tons in 1974,comprising 5 per cent of the gross yield of allfish.Method of induced spawning,hatchery management and growth rate of this fishin the Lake are given,and plans for further raising its production are suggested inthis paper.

本文介绍了花马湖养殖场在增殖团头鲂(Megalobrama amblycephala Yih)方面的经验。团头鲂在人工饲养的条件下,通过鲤鱼脑垂体催情,能人为地控制产卵。脑垂体的剂量为雌鱼6—8毫克/公斤,雄鱼5毫克/公斤或不注射。花马湖面积17,000亩,水草茂盛。引种后的团头鲂,在湖里已有其产卵场和越冬场所。团头鲂在湖中生长良好;春放8—10厘米的鱼种,冬季可长到200克(150—300克),第二年长到450克(300—650克)。在人工放养的年份,年产量在渔获量中已往一般占2—3%,1974年达5%。投放大量大规格鱼种,才能使团头鲂在湖中稳产高产。1973年投放8.3厘米以上的团头鲂春片鱼种20万尾,当年产量为2万余斤。1974年投放春片鱼种30万尾,产量达4万余斤;仅夏、秋季敞水除野“卡子”业司,每天每船可捕获150—250克的团头鲂8—10市斤,占船产量的40%左右,是历年罕见的现象。

 
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