终结那些关于土豆的谣言

<正>谣言1土豆营养单一真相:有"地下苹果"和"第二面包"之称的土豆,含有人体必需的七大类营养物质——糖类、维生素、脂肪、蛋白质、水、无机盐、食物纤维。仅是一个148克的土豆,其维生素C的含量就能和10个苹果或4个西红柿相媲美;其钾含量也不低,相当于4个香蕉。食用这么一个小小个头的土豆就能供给人体一天所需维生素的45%,钾的21%。     

甘肃农民主食营养现状及对策

我省人民膳食问题的核心在于解决农民的粮食及以粮食为主的膳食营养问题。着眼于我省农村食物生产现状及粮食营养,阐明农民营养现状是:热量基本满足,蛋白质、脂肪摄入量不足,膳食的热量、蛋白质中,粮食比例过高;另外,Ca、Fe、VitA、VitB_2也感缺乏。据此,提出改善我省农民营养现状的对策:把科技与教育真正转化为现实生产力,促进粮食生产;建立良性农业生态系统,发展豆类种植业和畜牧业;充分食用杂粮及蔬菜瓜果,以补主食营养。     

家用袖珍营养计算尺

美国加利福尼亚州Dunn& Reidman公司制成一种袖珍营养计算尺。尺长仅约23cm,它列有321种不同的食物,包括肉、鱼、蔬菜、水果、果仁、乳制品和各种制成食品。对每种食物,计算尺均标有已计算出的14种营养组分的量,包括蛋白质、脂肪、热量、碳水化合物和10种基本维生素与矿物质。     

我国应大力开发单细胞蛋白

蛋白质是人类生命活动最基本的物质基础,它对人体的素质和智力有着直接的影响。近几年来,我国城乡居民的食物消费水平有了显著提高,但以食品的构成和营养成分来看,淀粉消费量大,热量能够满足需要而蛋白质却不足。特别是动物性蛋白仅占食品总蛋白的11.3％。据中国预防医学科院进行的全国营养调查表明,我国每人每天的蛋白质摄入量为67克,低于国际上人均每天保证维持正常身体健康需要的75克蛋白质的标准,也低于世界人口平均摄取蛋白质68.8克的平均量。     

浅析马拉松运动员的营养问题

马拉松运动员体内代谢过程比较稳定,膳食中必须含有机体所需要的一切营养素。只有各种营养素含量适当,才能充分发挥食物的营养作用。营养素是指能在体内消化吸收、供给热能、构成机体组织和调节生理机机能,为身体进行正常物质代谢所必需的物质。人体所需要的营养素有蛋白质、糖、脂肪、维生素、无机盐和水6类。一、营养素对马拉松运动员的作用 (一)蛋白质：蛋白质运动能力的发挥与提高有着十分重要     

济南在校大学生膳食营养现状调查

采用问卷法、个别询问等对济南市高校大学生进行调查。用中国营养学会制定的膳食营养参考摄入量和中国居民膳食指南,进行调查研究。调查结果如下:早中晚三餐热量分布不均衡,尤其早餐,热量偏低;女生经常吃早餐人数总体多于男生;摄入食物类别中,水果、奶类女生明显高于男生,其他类别食物无统计学差异;对三大产能营养素的摄入,碳水化合物符合推荐标准,蛋白质高于推荐量,脂肪摄入低于推荐量。根据调查结果,提出改善膳食营养状况的合理化建议。     

人类的蛋白库—海洋生物资源

蛋白质是整个生命现象的物质基础,它不仅是人体的重要组成部分,而且是人体生长发育和新陈代谢不可缺少的营养物质,可以说是人体生命的基础。人类只能从食物中才能获取所需要的蛋白质,因此,食物的营养、数量和来源等问题便是人类生存的重大问题。     

我国锦鲤营养需要研究进展

随着我国锦鲤养殖业的快速发展,锦鲤的营养需要研究显得尤为重要。本文从锦鲤对蛋白质、脂肪、碳水化合物、维生素、矿物质等营养物质需要方面阐述了我国对锦鲤营养需要研究进展,旨在为研制锦鲤的配合饲料提供参考。     

食物安全与农业经济

<正>从全球来看,虽然食物安全总体上得到改善,但目前和未来全球食物安全问题还相当严峻。根据FAO估计,在2010年全球仍然有9.25亿人口处于严重营养不良,不同区域和国家的食物安全问题差异显著,食物安全问题主要是发展中国家的问题。改革开放三十多年来,虽然我国食物的安全保障得到显著改善,农村贫困人口比例也从改革初期的80%以上下降到现在的10%左右,然而,近年来食物需求的持续增长和生产成本上升     

大力发展植物工厂产业推进中国现代农业进程

 当今世界，人口不断增长、农产品需求数量逐年增加，而农业资源总量却持续减少，环境污染日益严重，气候灾害频繁发生，农田生态系统生产性能及其稳定性降低且难以保障，这对国家粮食安全、食物安全及农产品可持续供给构成严重挑战。因此，如何增加我国农产品及食物产能，保障食物安全成为我国未来必需面临和解决的现实问题。     

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

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.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

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