A REPORT OF BIRDS OF NORTHEASTERN YUNNAN

A zoological expedition was made from March to June, 1975, in Northeastern Yunnan at Southeast of Yangtze River (27°30′—28°40′ N., 103°15′—104°25′E.). 450 specimens of birds were collected. Orders and families treated in this paper are listed below:     

TEMPERATURE COEFFICIENT OF THE ACTION OF β-RAYS UPON THE EGG OF NEREIS

The temperature coefficient of the action of β-rays from radium upon the egg of Nereis lies between 1.1 and 1.2. This is of a magnitude characteristic of photochemical reactions.     

ON NEW MATERIAL OF STEGODON WITH RECOLLECTIONS OF THE CLASSIFICATION OF STEGODON IN CHINA

ReviseddiagnoaisCraniumcompressedanteroposteriorlyandhighvertical1y.Superiortuskslargeandstraight,nolowerincisors'Ridge-platesprogressiveIymulti-plyingfromsixtoelevenintheintermediateteeth,fromninetofifteenandhaIfilltheposteriormolars.Thereisamediancleftoritsvestigesintheanteriorridge-platesoftheprimitivespecies.Conesrapidlysubdividingbybinaryorternary.fissionintomultipleconelets(8-l2).Ridge-plateselevatingfrombrachyodonttosubhypsodont.Cementdevelopingintheval1eys.RemarksSarwar(l977)propose…     

INCREASE OF CONTRAST SENSITIVITY FUNCTION OF RETINA BRAIN SYSTEM WITH INCREASE OF OPTIC DEMODULATION

Contrast sensitivity function(CSF or Tcs)of the visual system is generally regarded to be linearlyrelated to the product of optic MTF of the eye,Te,and MTF of the retina-brain system Trb,     

A STUDY OF INFLATION OF THE LUNGS OF THE NEWBORN—A Preliminary Report

There seems to be no reasonable doubt that the lungs in a newborn expand progressively during the first few days of life. Some degree of atelectasis seems to be perfectly normal. This is indicated by a number of roentgenographic studies (including those here reported); by the reported findings of pathologists; by the fact that in experimental animals the lungs inflated very unevenly; and by the fact that aeration of only a portion of the lung is needed for complete oxygenation of the blood. The relation of atelectasis to neonatal death is not entirely clear and is probably not always the same. The infant may die from other causes before the lungs are fully expanded. Atelectasis may develop secondarily to other debilitating conditions. The frequent coincidence of prematurity and extensive atelectasis is impressive. It may be that the lungs are so incompletely formed that they cannot expand. On the other hand, atelectasis and massive collapse in the adult is a serious condition and there seems to be no good reason to suppose that this cannot also occur in infants and be serious per se.The air pressures found necessary to expand the lungs in rabbit fetuses were found to be about ten times what adult humans use in quiet respiration and were of about the same magnitude as the pressures found necessary to expand the lungs of stillborn humans. An attempt to produce atelectasis in newborn rabbits by chilling was most inconclusive. Atelectasis did develop in three of 15 animals used in the experiment, but the relation to chilling was not at all clear.     

ON NEW MATERIAL OF PALAEOLOXODON NAMADICUS OF CHINA,WITH DISCUSSION ON THE CLASSIFICATION OF SOME PLEISTOCENE ELEPHANTS OF CHINA

(Summary)The content of this paper includes the following 5 parts:Ⅰ.Palaeoloxodon namadicus namadi(typicus)MatsumotoⅡ.Palaeolokodon namadicus naumanni(Makiyama)Ⅲ.Palaeoloxodon namadicus yabei?MatsumotoⅣ.Discussion on the systematic classification of P.namadicus and some otherPleistocene elephants of chinaⅤ.Conclusion     

EFFECT OF REMOVAL OF EXTERNAL CALCIUM ON PHOSPHOINOSITIDE HYDROLYSIS IN CULTURED MYOTUBES OF EMBRYONIC CHICKEN

本工作研究了去细胞外钙对取自9天来亨鸡胚的培养肌管磷脂酰肌醇水解的影响。80 mmol/L K     

SYSTEMATICS OF ISOPTERA FROM CHINA——2. DESCRIPTIONS OF THREE NEW SPECIES OF TERMITIDAE

The present paper deals with 3 new "Capritermes typus" termites belonging toMirocapritermes, Procapritermes and Homallotermes respectively. Holotypes, morphotypes,paratypes and thier duplications are deposited in Huanan Tropical Crops College, Tan-hsien, Hainan Is., China.     

NEW TAXA OF ILEX FROM THE PEOPLE''''S REPUBLIC OF CHINA

llex strigillosa T.R.DUDLEY,sp.nov. 〔Section Pseudoaquifolium S.-Y.HU(1950)Series Lougecaudatae S.-Y.HU(1950)〕. DIAGNOSIS: A I.kengii S.-Y.HU(1950)affinis sed ramulis et gemmis terminalis,dense cinerascentibus puberulento-strigillosis,stipulis tenuiter membranaceis minutis0.1mm longis vel minus fugacibus cito caducis,petiolis denso cinerascentibuspuberulento-strigillosis aliquado subglabris laminis versus,laminis foliorum mino-ribus 4—7.5cm longis 1—2cm latis basibus acutis ad attenuatis apicibussensim acuminatis vel caudato-acuminatis acuminibus brevioribus 5—10(—15)mm longis marginibus integris vel subintegris conspicue sinuolatis et apicibus     

METAMORPHOSIS OF THE LARVA OF THE POLYCHAETE ARENICOLA CRISTATA. MORPHOLOGY OF THE ‘HOUR-GLASS’ STAGE

The constricted ‘waist’ of the metamorphosing larva of the polychaete Arenicola cristata is described, using light and electron microscopy. The constriction is shown to be the consequence of the discharge and collapse of a post-trochal ring of epithelial cells which remain as functional components of the post-metamorphic juvenile. Morphological differentiation of neuro-effector and interneuronal contacts is initiated at this time. Muscular and neural changes are discussed in terms of their role in effecting metamorphosis.     

THE RELATIVE PHYSIOLOGICAL EFFECTS OF β-RAYS OF DIFFERENT VELOCITIES

1. The physiological effect upon the eggs of Nereis of homogeneous groups of β-rays of different velocities is proportional to their ability to ionize air. 2. β-rays of low velocity produce a greater amount of physiological change than the same number of rays of high velocity. 3. These conclusions are consistent with, but do not prove, the view that the physiological effects of radiations from radium and x-rays are due to the production by them of an ionization of some substance in the egg.     

THE USE OF MULTIPLE REGRESSION ANALYSIS FOR ESTIMATING THE ACTION PATTERN OF CELLULASE FRACTIONS IN HYDROLYSIS OF CELLULOSE

A comprehensive regression model was developed for estimating theaction pattern of three cellulase fractions (β-1,4-glucan cellobiohydrolase,endo-glucanase and cellobiase)in hydrolysis of cellulose.The effect of stru-cture feature of cellulose on hydrolysis can also be evaluated by using thismodel.The results suggested that this technique was suitable for estimatingthe action pattern of cellulase fractions in cellulose hydrolysis,especiallyin quantitative eluciation of the effect of each fraction,alone or in combin-ation of which.     

EDITORIAL BOARD OF“CHINESE JOURNAL OF HISTOCHEMISTRY AND CYTOCHEMISTRY”

Advisor　 L i Zhaote(Beijing Medical U niversity,Beijing)Xue Shepu (Chinese Academ y of Medical Science,Beijing)Editor　 Xiong Xikai (Tongji Medical University,Wuhan)Associate Editors　 L u Jinhuo (Tongji Medical University,Wuhan)L i Zhaochun (Tongji Medical University,Wuhan)Members of the Editorial BoardBen Changen　　 (Beijing U niversity of Traditionl Chinese Medicine,Beijing)Cai Wenqin (The Third Military Medical University,Chongqing)Chen Kequan (Chinese Academ y of M…     

APPLICATION OF NONLINEAR FORECASTING METHOD TO ANALYSIS OF ISI IN NERVOUS SYSTEM

ＡＰＰＬＩＣＡＴＩＯＮＯＦＮＯＮＬＩＮＥＡＲＦＯＲＥＣＡＳＴＩＮＧＭＥＴＨＯＤＴＯＡＮＡＬＹＳＩＳＯＦＩＳＩＩＮＮＥＲＶＯＵＳＳＹＳＴＥＭＧｏｎｇＹｕｎｆａｎ（龚云帆）ＸｕＪｉａｎｘｕｅ（徐健学）（ＤｅｐａｒｔｍｅｎｔｏｆＥｎｇｉｎｅｅｒｉｎｇＭｅｃ...     

SPECIFIC STIMULATION OF MIGRATION OF HUMAN KERATINOCYTES BY μ -OPIATE RECEPTOR AGONISTS

ABSTRACT

There are several indications that neuropeptides, especially the opiate receptor agonists, modulate the immune response by stimulating the formation of granulation tissue and enhancing the reepithelialization. We observed that the μ-opiate receptor ligand β-endorphin stimulates the migration of cultured human foreskin keratinocytes. After 1?hour exposure to 1?µM β-endorphin, the keratinocytes experienced an increase of cell diameter by cellular elongation and stimulation of migration. Dynorphin had a lesser effect under the same condition. The opiate receptor antagonist naltrexone significantly reduced the effect of β-endorphin on keratinocyte migration. This migratory effect of μ-opiate receptor agonists in vitro indicates that the opioid peptides, released in wounds, could play a key role in the final reepithelialization and tissue regeneration in wound healing. This new knowledge will help us not only to understand the mechanism of wound healing but also to improve the therapeutic strategy in the healing of painful chronic wounds.     

INFLUX OF GLUTAMIC ACID IN PERIPHERAL NERVE—CHARACTERISTICS OF INFLUX1

Abstract— —The influx of glutamic acid in frog sciatic nerve has been studied by monitoring the disappearance of ¹⁴C labelled compound from the bathing medium. After 5hr of incubation in 10 ⁻⁶m non-labelled l -glutamic acid and 0·01, μc/ml labelled isotope, the intracellular concentration of labelled glutamic acid is about 15 times the concentration in the bathing medium; however, there appears to be a net loss of non-labelled compound with incubation. Uptake of L,-glutamic acid is accompanied by conversion of significant amounts of labelled E-glutamic acid to carbon dioxide and glutamine; small amounts of γ-aminobutyric acid and aspartic acid are also formed. The rate of disappearance of labelled l -glutamic acid decreases with increasing concentration of non-labelled isotope in the bathing medium. Construction of a Lineweaver-Burk plot from initial velocities of influx yields an average V_m of 4·02 × 10⁻⁹ moles/g/min and an average K_m. of 3·23 × 10 ⁻⁵ moles/l. The influx of glutamic acid is highly specific with regard to molecular structure; of the compounds tested, only l -glutamine, l -glutamic acid, GABA, l -lysine, and l -aspartic acid are taken up, and only l -aspartic acid will compete with l -glutamic acid for uptake.     

THE EFFECT OF N,N''''—DIMETHYL FORMAMIDE ON THE FREQUENCY OF MICRONUCLEI IN BONE MARROW POLYCHROMATIC ERYTHROCYTES OF MICE

The micronucleus test is a reliable short-term in vivo test for detectingpotential clastogens or spindle poisons.Using the micronucleus test to evaluatethe mutagenic effect of N, N＇-Dimcthyl formamide(DMF)on bonemarrow polychromatic erythrocytes,Kunming strain mice were treated withthe drug in single and multiple injection tests.