CYTOLOGICAL COMPARISON OF GAMETOGENESIS OF SCALLOPS,ARGOPECTEN IRRADIANS AND CHLAMYS FARRERI

ＩＮＴＲＯＤＵＣＴＩＯＮＫｎｏｗｌｅｄｇｅｏｆｇａｍｅｔｏｇｅｎｅｓｉｓｉｎｖａｌｕａｂｌｅｍａｒｉｎｅａｎｉｍａｌｓｉｓｖｅｒｙｉｍｐｏｒｔａｎｔｔｏｃｏｍｍｅｒｃｉａｌｆｉｓｈ ｅｒｙ.Ｇａｍｅｔｏｇｅｎｅｓｉｓｉｎｂｉｖａｌｖｅｓｗａｓｅｘｔｅｎｓｉｖｅｌｙｓｔｕｄｉｅｄａｔｄｉｆｆｅｒｅｎｔｌｅｖｅｌｓ (Ｄｏｈｍｅｎ ,1 983 ;ＤｏｒａｎｇｅａｎｄＬｅＰｅｎｎｅｃ ,1 989ａ,ｂ) .Ｓｃａｌｌｏｐｓａｎｄｏｔｈｅｒｍａｒｉｎｅｂｉｖａｌｖｅｓｈａｖｅｓｉｍｉｌａｒｒｅｐｒｏｄｕｃｔｉｖｅｃｙｃｌｅ…     

IMPACT OF STARVATION ON SURVIVAL, MEAT CONDITION AND METABOLISM OF CHLAMYS FARRERI

ＩＮＴＲＯＤＵＣＴＩＯＮＦｒｏｍｔｈｅ1990’ｓ,ｔｈｅｓｃａｌｌｏｐ,Ｃ.ｆａｒｒｅｒｉ,ｃｕｌｔｕｒｅｄｉｎｔｈｅｎｏｒｔｈｅｒｎＣｈｉｎａＳｅａ,ｄｅｔｅｒｉｏｒａｔｅｄｉｎｓｉｚｅ,ｈｅａｌｔｈａｎｄｏｕｔｐｕｔｂｅｃａｕｓｅｏｆｈｉｇｈｓｔｏｃｋｉｎｇｄｅｎｓｉｔｉｅｓ,ｓｈｏｒｔａｇｅｏｆｎａｔｕｒａｌｆｏｏｄａｎｄｄｉｓｅａｓｅｓ.Ｍａｓｓｍｏｒｔａｌｉｔｙｏｆ50%-90%ｏｃｃｕｒｒｅｄｉｎＪｉａｏｚｈｏｕＢａｙ,Ｑｉｎｇｄａｏ,ａｎｄＳｉｓｈｉｌｉｗａｎＢａｙ,Ｙａｎｔａｉ,ｆｒｏｍＪｕｌｙｔｏ…     

Studies on the antitumor activity and isolation of the glycoprotein from the gonad ofChlamys (Azumapecten) farreri

After being degreased with acetone, the female gonad ofChlamys (Azumapecten) farreri was extracted with water, and then subjected to DEAE—cellulose column chromatography and purified by Sephadex G-100 chromatography to obtain a pure female gonad glycoprotein (FGGP). The IR spectra, electrophoresis and chemical analysis of FGGP indicated that it was a kind of acid glycoprotein and that the content of total protein and sugar were 54.8% and 40%, respectively. Pharmacological tests showed that FGGP could inhibit (inhibition rate of 40.87%) the growth of Sarcoma 180 of mice.     

EFFECTS OF DIFFERENT COMBINATIONS OF CRYOPROTECTANTS ON SPERMATOZOON VITALITY OF CHINESE SCALLOP,CHLAMYS FARRERI,DURING LOW TEMPERATURE EQUILIBRIUM

The effects of membrane penetrating anti-freezing agents(MPAAs), DMSO(dimethyl sulfoxide),glycerol,EG(ethylene glycol) and methanol in combination with different cryoprotective additives suchas carbohydrates,macromolecules and inorganic compounds on the spermatozoon vitality of Chinesescallop,Chlamys farreri,during 1 h 0℃ equilibrium were investigated.When only MPAAs existed,the detrimental effects of different MPAAs ranked in the following order:DMSO相似文献   

STUDIES ON EXTRACTION PROCEDURE AND ANTIOXIDATIVE ACTIVITY OF PHLOROTANNINS FROM SARGASSUM KJELLMANIANUM

ImODUcrIONThetermphlorotanninswascoinedbySattlerinl974(dtalinRagan&Glombiha,l986)forthebrownalgalpolyphenoIshavingcheAncalcharacteristiesoftannins.Later,theirstmCturalunitwasprovedraaganandGlombitsa,l986)tobephlorogludnol(i.e.l,3,5-trihydroxybename).OginoandTaki(l957)notalthattheaqueousextraCtSoffreshthalliofSargassumringgoldianumhavetanninproperties(tumingbluishorreddishvioletafteradditionofironsaltS,astringenttaste,andabilitytopredpitategelatin).HighmolecularweightpolyphenoIsfromAsco…     

中国东部北北西(北西)向构造系与地震活动关系的讨论

本文依实际资料,讨论了中国东部北北西(北西)向构造系与地震活动的关系。其结论是:中国东部的地震活动主要是北北西(北西)向构造系,在北东东向压应力作用下,两组共轭剪切断裂分别发生右旋和左旋错动的结果。两者关系颇为密切。     

Effects of benzo（a）pyrene exposure on the antioxidant enzyme activity of scallop Chlamysfarreri

Scallop Chlamys farreri was exposed to different concentrations of benzo(a)pyrene (BaP) (0.5 μg/L, 1.0 μg/L, 10.0 μg/L and 50.0 μg/L) for 30 days in seawater. The 7-ethoxyresorufin O-deethylase (EROD) activity was significantly induced, and increased with the increasing BaP concentration. The glutathione-S-transferase (GST), superoxide dismutase (SOD), catalase (CAT), Glutathione peroxidase (GPx) activities increased in short time at low concentration of BaP, and was significantly depressed at high concentr...     

D_（001）树脂在酸性硫脲溶液中吸附、分离金银研究

本文研究了Ｄ_００１大孔阳离子强酸树脂从Ｈ_２ＳＯ_４－ＣＳ（ＮＨ_２）_２溶液中，富集及分离Ａｕ（Ｉ）、Ａｇ（Ｉ）的性能。表明在ｐＨ＝２．０左右，树脂对Ａｕ（Ｔｕ）￣＋_２、Ａｇ（Ｔｕ）￣＋_２（Ｔｕ＝硫脲）有良好的吸附性能，Ａｕ和Ａｇ的吸附容量分别为６１．１８ｍｇ／ｇ－Ｒｅｓｉｎ和９９．１１ｍｇ／ｇ—Ｒｅｓｉｎ。负载柱上的Ａｕ、Ａｇ可分别用ＮａＣＮ—ＮａＯＨ和Ｈ_３ＢＯ_３－ＮａＯＨ－Ｎａ_２Ｓ_２Ｏ_３定量洗脱。可进行一定程度的Ａｕ、Ａｇ分离。     

草鱼、鲤鱼肠道、肝胰脏消化酶活性的初步研究

用两种不同蛋白质和糖类水平的饲料喂养草鱼、鲤鱼夏花及一龄鱼种，通过对两种鱼肝胰脏及肠道的消化酶活性测定发现，在一定温度条件下，随着水温升高，两种鱼肠道及肝胰脏的蛋白酶和淀粉酶比活均升高；鱼类摄食后六小时酶比活明显大于摄食后二十四小时的酶比活，在水温２５℃条件下，用两种不同饲料分别饲养草鱼、鲤鱼六周后发现：随着饲料蛋白质水平的提高，草鱼、鲤鱼肝胰脏中蛋白酶比活明显升高鲤，而总肠变化不显著；随饲料中糖量水平的提高，草鱼肝胰脏及肠道的淀粉酶比活明显升高，而鲤鱼差异不显著．草鱼，鲤鱼肠道蛋白酶比活以后肠最高，中肠次之，前肠最小。而肠道淀粉酶比活性却随饲料成分而发生差异。两种鱼肝胰脏消化酶活性均为一龄鱼种大于夏花阶段，这与组织切片的观察结果相符。     

黄河壶口瀑布成因及与晋陕峡谷的关系

通过对黄河壶口瀑布区地质遗迹的考察 ,从岩性、构造、侵蚀作用、冰川作用诸方面论证了瀑布的成因问题 ,同时对黄河壶口瀑布与晋陕峡谷的关系以及广义及狭义概念上的瀑布形成时间进行了分析。     

储良广眼砧穗不亲和问题研究

储良广眼的砧穗不亲和现象在众多个体中呈现从亲和至不亲和的连续变化，随砧、穗周长差异的增大，不亲和症状表现突出。砧、穗周长比值与几个生长量指标存在显著相关。提出以砧／穗比作为衡量不亲和程度指标。靠接加砧结果表明对严重不亲和树出现的症状有较大的缓解。     

试论平果三水铝石成因、富集规律及工业价值

平果岩溶堆积型铝土矿系一水硬铝石铝土矿床 ,原矿中含有大量的准胶结物———红土。研究资料证实 ,红土中的三水铝石含量甚高 ,不少地段已达到工业利用的要求。其他矿物质来源于原生沉积铝土矿床 ,并与堆积矿同产于一个层位。     

STUDIES ON THE OPTIMUM PROTEIN CONTENT AND THE RATIO OF ANIMAL TO PLANT PROTEIN IN THE DIET OF THE BLACK SEA BREAM(SPARUS MACROCEPHALUS)

An experiment on the optimum dietary protein content for the black sea bream using semi-purified dietsshowed the optimum content is 50.19% by weight as inferred from the growth rate and food consumptionof the fish. Another experiment on the proper ratio of animal to plant protein in its diet using sandeel as theanimal protein source and peanut cake meal as plant protein source showed that the ratio had great ef-fect on its growth and should be 1.00:0.89—0.96 as judged from the growth rate and food consumptionof the fish.     

STUDIES ON THE PHOSPHORUS REQUIREMENT AND PROPER CALCIUM/PHOSPHORUS RATIO IN THE DIET OF THE BLACK SEA BREAM(SPARUS MACROCEPHALUS)

An experiment on the phosphorus requirement and the proper Ca/P ratio in the diet of the black sea bream using the phosphorus gradient method (with casein as basic diet, sodium dihydrogen phosphate as source of phosphorus, and calcium lactate as source of calcium) showed that growth was greatly affected by the diet's phosphorus content and Ca/P ratio. Inadequate phosphorus in the diet resulted in slow growth and poor food conversion ratio (FCR). Analyses of the fish body showed it contained a high level of lipid but a low level of moisture, ash, calcium and phosphorus. The optimal values of phosphorus and Ca/P ratio in the black sea bream diet are 0.68% and 1:2 respectively. Phosphorus in excess of this optimum value resulted in slow growth or even death. The results of this experiment clearly indicated that phosphorus is the principal mineral additive affecting black sea bream growth.     

章村-楼塔一带双溪坞群Sm-Nd 和~(40)Ar-~(39)Ar年龄及地质年代意义

富阳章村－萧山楼塔一带双溪坞群火山岩系首次获得了全岩Ｓｍ－Ｎｄ等时年龄为１１５４±１２２Ｍａ和４０Ａｒ３９Ａｒ等时年龄为９９４±２０Ｍａ。后者很可能是代表岩石遭受过后期热事件影响的扰动年龄，但它仍比原有的锆石Ｐｈ－Ｐｈ年龄（８７５Ｍａ和９０４Ｍａ）要大得多。据此，我们认为该区双溪坞群的形成时代大致为１１００±５０Ｍａ，相当于中元古代晚期蓟县系。同时，结合其它有关同位素年龄资料，探讨了浙西北地区相当地层（绍兴平水群、开化钟吕群）的地质年代对比及神功运动的时限等问题。     

MORPHOLOGICAL AND FUNCTIONAL STUDIES ON THE EPIDERMAL CELLS OF AMPHIOXUS (BRANCHIOSTOMA BELCHERI TSINGTAUENSE) AT DIFFERENT DEVELOPMENTAL STAGES

ImODUcrroNTheVertchrateepidennisisinintirnatecontaCtwiththeenvironmentandre~environmentaladaptions.TheepidermisofterreStrialanbolsiskeratinedwhilethatofamPhibiousandaquaticfonnsisrelataltomucus-produCti0n.Theepidennisadsasafi-nalbatherbetweentheorganismanditsenvironmentandoneofitSrnainfunCtionsistoproteCttheorganismagainstextemalpathogens.lnadditiontoIneCanicalproedonofthebody,theepidertnisofamPhibiansandfishescansededinsandotherantibacterialpeptidesthathelpinthebonedefenSeoftheanhal(Su…     

马氏珠母贝育苗方法的多因素试验

用正交试验的方法观察影响马氏珠母贝育苗效果的七个因素：ＥＤＴＡ（Ａ）、水处理（Ｂ）、换水（Ｃ）、充气（Ｄ）、光照（Ｅ）、抗菌素（Ｆ）、倒池（Ｇ）。结果表明：影响成活率的显著因素为Ａ、Ｃ、Ｄ、Ｅ、Ｇ；影响贝苗生长的显著因素为Ｂ、Ｃ、Ｄ、Ｅ、Ｇ。加入ＥＤＴＡ、利用砂滤海水、每天换水、微弱充气、较暗的光照、使用抗菌素和定期倒池为浮游幼虫期较优的育苗方法。     

兰州台潮汐形变观测结果与景泰6.2级地震

本文介绍了兰州形变台水管倾斜仪和石英伸缩仪1987年初至1990年底观测资料的调和分析结果和各分量的年变化,分析了M_2波γ和α因子的月重复精度及其对非潮汐变化的监测能力和本区当前的构造活动特征,对异常变化与1990年10月20日甘肃景泰Ms6.2级地震之关系作了初步探讨。     

白鲢仔稚鱼食性与生长的初步研究

池塘培育的鲢仔稚鱼（６．８—３２．２ｍｍ）食性可分为浮游动物和浮游植物为主的二个阶段。食性的转化取决于消化系统各器官的发育分化。全长１５ｍｍ左右为食性转化阶段。全长２７．９～３２．２ｍｍ，食性接近成鱼。口宽（ＭＷ）、口高（ＭＨ）与全长（Ｌ）的关系分别为：ＭＷ＝－４０１．９９＋９２．６２Ｌ、ＭＨ＝－２２１．６２＋４９．６６Ｌ；肠长／全长（Ｋ）与全长（Ｌ）的关系为：Ｋ＝－０．１２４８＋０．０７１３Ｌ；第Ⅰ列外侧鳃耙数（ＧＮ）与全长（Ｌ）的关系为：ＧＮ＝－６７．４４＋８．９３Ｌ；全长（Ｌ）体重（Ｗ）和时间（ｔ）的关系分别为：Ｌ＝４．５３７＋１．４１７ｔ、Ｗ＝２．７８５ｅ０．２８７３ｔ。以上回归方程经统计检验均为高度显著相关。     

MODERN SEDIMENTATION RATES AND SEDIMENTATION FEATURE IN THE HUANGHE RIVER ESTUARY BASED ON ~(210)Pb TECHNIQUE

Based on Pb technique, sedimentation rates of 11 cores collected from the Huanghe River estuary were determined. CaCO3 distribution of 4 cores chosen from among these was measured. Profiles of 210Pb in the cores showed that the distribution of 210Pb activity decayed with depth, appeared in stages and in more than one segment. The sedimentation rates,210Pb and CaCO3 data have similar distribution trend in the 4 cores. Jhe profiles of Pb and CaCO3 were used to study sedimentation in -tensity, transportation trend of material and sedimentation features in the coring area.