中国海域管水母类（SIPHONOPHORA）区系的初步研究

管水母类主要分布于热带和亚热带海域。全世界已记录的约有150余种，种数虽然不多，但数量却很大是海洋浮游动物的主要成组之一。例如，我国中，西沙群岛海区管水母类的数量，为该海区浮游动物数量组成中的第三位，又如双生管水母(Dlphyes chamjssonis)五角管水母(Muggiaea atlantica)在浙江沿海，不仅在所有水母类的数量上居首位，而且在整个浮游动物数量组成中，它电占有很大的比例。     

经济角

浙江省农业科学院畜牲兽医新技术简介用酶技术开发大麦型饲粮及产业化研究该技术经4年的科技联合攻关，率先实现了酶制剂和加酶全价料的产业化，酶制剂产品已获批准文号。该成果将0.1%~0.15%酶制剂添加到猪禽全价饲料中，可提高利用麦类及其副产物在饲料中的比例，提高生产性能，增加经济效益。经测算，用加酶大麦型饲料喂猪，每头猪可增加效益近40元，经济效益显著。规模化集约化养猪技术该成果是一项具有优质高效且易于集约化生产管理的配套系猪种和良种猪的大群高产、稳产综合技术。它有一套完善的规模化集约化养殖场设计、工艺流程和猪…     

饲用酶制剂的应用现状与发展趋势

随着我国饲料工业的发展,积极开发新的饲料资源、提高饲料的转化效率、降低饲料成本,已成为畜牧界亟待解决的课题。饲用酶制剂的应用是现代化饲料工业的一项突破性的工作。酶是具有特殊催化能力的蛋白质,是促进生物化学反应的高效物质,能提高饲料消化率,促进动物营养物质的充分利用,节约粮食,减少疾病,降低生产成本,是一种很有前途的高效饲料添加剂。 饲用酶制剂的作用机理是直接分解废物,供给机体营养;去除抗营养因子,改善消化机能;激活内源酶分泌,补充内源酶不足;能与动物内分泌调节,影响血液中的某些成份。因此,酶制剂     

饲用酶在饲料中的作用及其原理

理讨论了饲用酶在饲料中的作用及原理,饲料中添加酶制剂产的利用率,消除饲料中的某些抗营养因子,增加饲料营养,促进畜禽生长,从而提高动物的生产性能。     

食品与饲料中雌激素免疫检测方法的建立

近年来，食品与饲料中雌激素残留的问题日益突出，必须加强监管，完善食品饲料中的雌激素的检测。应用酶联免疫检测法可开发出特异性强、灵敏度高、方便快捷、低成本的检测方法。本文以一种最常见的雌激素己烯雌酚为例，介绍了雌激素免疫检测的方法的建立与应用。     

大家畜氢氰酸中毒的的诊断与治疗

随着社会的发展，时代的进步，新的高效农药、化肥、调制不当的饲草、饲料及发霉变质的饲草、饲料、有毒植物等使家畜中毒越来越多，给畜牧业的发展造成了一定损失。如玉米、高梁的嫩苗、亚麻籽、亚麻饼等均含有氰苷，上述饲草、饲料堆放发霉时，在其本身酶的催化作用下，即可形成氢氰酸。家畜吃了含有氢苷的饲草、饲料在胃内经酶和盐酸的作用，产生剧毒的氢氰酸，因而引起家畜中毒。     

国外开发的饲料特殊添加剂

随着畜牧禽鱼业的日益发展，饲料特殊添加剂的需求也日渐增长。为适应这种新形式，饲料特殊添加剂在品种和质量上不断地推陈出新。饲料特殊添加剂可以强化营养素在饲料中的含量，提高其营养价值。近年来，国外开发出许多饲料特殊添加剂。柠檬酸英国的研究人员，在每公斤仔猪饲料中添加209柠檬酸，喂养10日龄断奶的仔猪，其日增重可比不添喂柠檬酸的仔猪提高近20％。黄霉菌素德国的科学家，在猪的体重长别35kg以后，向饲料中添加黄霉菌素，其数量为仔猪每公斤饲料添加sing。饲喂后，猪的日增重可提高7％，饲料的转化率可提高5％。铜日本的畜…     

DJ饲料复合酶

酶是一种生物催化剂，经科学试验证实，某些酶可作为添加剂应用于禽、畜饲料，加速动物对饲料的吸收及消化，降低饲料成本，提高饲料的报酬和利用率。筛选多株菌种，与蛋白、纤维、淀粉等原料混合发酵，生产的ＤＪ饲料复合酶，作为饲料添加剂，适合于猪、鸡等单胃动物使用，能提高出栏率和产蛋率，经济效益非常显著。一、生产工艺：多菌种培养──混合发酵──烘干粉碎──包装。二、生产原料（按日产３ｔ计，单位ｔ）：培养基０．０３２，麦麸０.３，玉米０.２，豆饼０.４，秸秆粉０.０１，氮０.０１，生长剂０.０５及其它。三、经济效益：…     

禾谷镰孢菌原生质体的制备和再生研究

为建立禾谷镰孢菌（Fusarium gromineanum Schwabe）转化体系，选用禾谷镰孢菌株F128为受体，分别用裂解酶、蜗牛酶、崩溃酶、纤维素酶、几丁质酶消化该菌细胞壁，都可获得一定数量的原生质体。其中产生原生质体效率最高的是崩溃酶，而且以5g／L浓度产生的原生质体数量最多，消化3．5－4．5h即可获得相当数量的原生质体，菌量的加入以每毫升酶解液中加入20mg湿菌性产生的原生质体最多。所制备出的原生质体的再生方式至少有2种。     

酶纤混合颗粒饲料饲养鲩鱼鱼种试验

鲩鱼(草鱼)增产潜力大,培育足够数量的大规格鲩种是提高塘鱼产量的重要措施。然而,当前面临的问题是饲料不足。以南海县为例,每年仅培育鱼种就需要60—70万斤精饲料。因此,如何“以粗代精”广辟饲料来源,有效地解决培育鱼种饲料不足是当前提高养鱼产量的重要研究课题。中山糖厂等从1971年起利用造纸废料蔗糠,经过蒸煮、磨浆、酶解糖化、发酵过滤脱水等工序,通过分解纤维素霉菌EA-867和合成蛋白质的白地霉菌种的协同作用,把纤维素转化为糖,再转化为蛋白质,制成酶纤饲料(表1)。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with