SOME REMARKS ON CHENJIAWO FAUNA──On the First Appearance of Peking Man Fauna

I.CORRELATIONBETWEENL0ESSSECTI0NAND0XYGENIS0TOPESTAGESIntheYuanloessarea,manyscientiststhinkthatthesedimentsarecontinuousandtheclimaticrecordsareperfect.Thisdoesnotappeartobeaccurate.Sedimentationwasdiscontinuousinmanysections.Forexample,manyscientistsarguethatS2corresp0ndstooxygenisot0peStage7(Liu,l985,KuklaandAn,l989;Dingetal.,l990).lnfact,S2includesthreelayersfS2SSl,S2LLlandS2SS2.Dingetal.(l990)reportedthatthereisathickunitofloessbetweenS2SSlandS2SS2intheBaicao…     

Adaptive Neural Network-Based ECG Data Compression According to the Morphology

1IntroductionElbo（ECG）offersalotofilllcorralltinfondionforthediagnosisOfheartdis－eases．Berz1，seahaormalEChcax［lrins＞llleu＂knownsituations，thcycanbeCSUghtinthelongti1Ylecontin～11xHlltoriDg．ndterrnoultonngsystemwhichcanrecord24－hoUrECGdataisoneofeffectiveme～toprovidethefun～．AlthOUghthehag6scaleICmorestohavebeeddevelopepbedeavailabletostorelOngtboeECGdsta，itisveqdifficultyandtioublesomethatalopnUmbeOfdstaisprasersandstoredortiallsillltted．InthedigitedECGdata，thereare…     

A NEW LOPHIALETID PERISSODACTYL(MAMMALIA) FROM THE EARLY EOCENE OF WUTU BASIN,SHANDONG PROVINCE

Periss0dactyla0wen,laseTaPiroideaGill,lgy2?tophiaiedaeMathedthenger,1925(Radhay,l%5)Ampeqhu!~gco'etsp'nov'TypeAfragInentaryrightmaxillawithcomPleteP2-MlandanteriorpartofM2twvlo7o2)'~andhothenCountyMine,2kmeastofWutUVillageofChangleCounty,Shandong;Eariyhee,WutUFonnahon'Inagn0dsApdrihveandmedium-edtapiroid'UPpercheekdrilow-crownedandmoderatey1ophodont,withdishnCtcuSPs;MlAnconeequalt0paraconeinfor;parastylerelativefysmall,anddosetoparacone;labialandlingUalcusPsinclinedt0ndd-dleakisof…     

海豹也需要尊重

每年春天．成千上万只琴海豹和帽海豹从北极迁游到加拿大东海岸,在圣劳伦斯湾清新纯净的浮冰上繁殖后代。那时,万里冰原变成了海豹的育婴园。雪白、毛绒绒的小海豹沐浴在初春的阳光下,依偎在妈妈的身旁吸吮乳汁。刚出生的小海豹不会游泳,为了抗拒严寒,它们必须大量地吃极富脂肪的奶水,以每天增长两公斤的速度成长。春末夏初,冰面融化,     

Multi-locus association study of schizophrenia susceptibility genes with a posterior probability method

Schizophrenia is a serious neuropsychiatric illness affecting about 1% of the world’s population. Family, twin and adoption studies have demonstrated that 65%―85% of the susceptibility to schizophrenia can be attributed to genes. On the basis of genetic model-ing of epidemiological data and recent results of a number of whole-genome screens for susceptibility genes, schizophrenia has been considered a complex disorder. A number of genes with small to moderate effects are involved in combinat…     

Spectral Test Instrument for Color Vision Measurement

Common displays such as CRT or LCD screens have hmlted capabilities in displaying most color spectra correctly. The main disadvantage of these devices is that they work with three primaries and the colors displayed are the mixture of these three colours. Consequently these devices can be confusing in testing human color identification, because the spectral distribution of the colors displayed is the combined spectrum of the three primaries. We have developed a new instrument for spectrally correct color vision measurement. This instrument uses light emitting diodes (LEDs) and is capable of producing all spectra of perceivable colors, thus with appropriate test methods this instrument can be a reliable and useful tool in testing human color vision and in verifying color vision correction.     

植物萜类合酶研究进展

随着植物中许多有价值的萜类化合物被发现和应用于人类生活 ,萜类生物合成途径的研究倍受重视。萜类合酶催化单萜、倍半萜和二萜生物合成 ,即分别催化GPP、FPP和GGPP形成单萜、倍半萜和二萜。本文叙述了近年来在植物萜类合酶催化机理、克隆策略和萜类生物工程的研究进展     

龙感湖沉积物泥芯硅藻群落和营养状态的反演

The importance of aquatic vegetation to the ecologi-cal restoration has been recognized commonly bylimnolo-gists and lake managements[1—4].As to the ecologicalrestoration in eutrophicated lakes,it is of great signifi-cance to knowthe dynamic process of the ecosystemevo-lution in a macrophyte-dominated lake under the humanimpacts in historical period,to make it clear whether thecommunitystructure and ecological function would be af-fected bythe extension of the vegetation growth,tofind asolutionto remain ste...     

关于中国淡水生态系统生物多样性监测与管理的探讨

China is one of the countries in the world with therichest species biodiversityinfreshwater ecosystem.How-ever,duetothe rapid economic growthandthe continuingincrease of human disturbances and destructions of aquatichabitats,the biodiversity of freshwater ecosystemsis dras-tically declining.Waterbodies become more and more“deserted”of sensitive species.Water areas are reduced,fragmentized,and changed in their hydrodynamics(i.e.damming),causing changes in sedimentation and otherchanges.Forinstance,the area o...