THE APPLICATION OF PARTIAL MELTING MODEL TO THE STUDY ON PETROGENESIS OF SOME SPECIES OF GRANITIC ROCKS IN SOUTHERN CHINA

71 REE data of 30 granitic rock species in southern China were collected. According tothe equilibrium partial melting model, the mineralogical and chemical compositions of theresidual phases as well as the melting degrees were calculated, which led to the determina-tion of the source materials of these granitic rock. The result shows that there are two typesof petrogenetic rocks among them, i.e. crustal granite and mixed granite. And the mixedratios were obtained for the latter case. A brief discussion on the factors affecting the REE patterns is also made.     

A STUDY ON THE ZONING TYPES OF FAULTED ROCKS IN CHINA

On the basis of observatioal data of more than one hundred faults in China and the apparent correlation between fault and megascopic structure, we have studied the zoning of the cataclastic rocks caused by different kinds of faults, and their characteristic types in China. Four distinct zones are recognized in a compressive faults from the centre outwards: crush conglomerate (fault gouge and gravel zone); mylonite——compressed schistose zone; granulated rock——structural lens zone; cataclasite——closely apaesd fracture zone. In addition to the observations in the field, an analysis of the zoning in terms of mechanical principle, experimental determination and tectono-geochemistry has also been made. The zoning reveals the layering and banding of geological bodies, which are of some theoretical and practical significance in mineral exploration.     

A STUDY ON THE ORDERING PATH OF ALKALINE FELDSPAR IN VOLCANIC ROCKS

In this paper, the study on the ordering path of alkaline feldspar from some volcanic areas by X-ray powder method is presented. The published data by mathematical statistics is treated, a series of formulas and figures to determine chemical composition and degree of Al site occupancy of alkaline feldspar are reset-up, and the simulated function Y=Z~(?) with Thompson's coefficients Y, Z and κ as the indexes of ordering path is suggested. Based on the difference between ordering paths distinguished by κ of alkaline feldspar from volcanic basins, the petrological characters of volcanic basins and the petrological characters of volcanic rocks, some preliminary conclusions of the origin are also summarized.     

PRELIMINARY DISCUSSION ON THE MAJOR CONDITIONS OF THE EXISTENCE OF OSTRACODA——TAKING PRESENT LAKES IN CHINA AS EXAMPLES

According to the investigation on various types of more than 100 lakes and the analyses of 700 samples from the bottom surface sediments,the author first discusses the influence of environmental elements of lake water, such as acidity (pH), minerality (salinity), temperature, depth and bottom materials on ostracoda behaviour, then puts forward his opinion that the salinity (minerality) is probably the major condition affecting the existence of ostracoda, and finally points out that the minerality of 180 mg/l or so may be the minimum value for the existence of ostracoda.     

AN EXPERIMENTAL STUDY ON THE SOL/GEL PHASE TRANSITION OF LINEAR POLYMER IN THE PRESENCE OF CROSSLINKERS

The sol/gel phase diagrams were studied for two systems: polyacrylamide/Cr (III) andpolyacrylamide/glyoxal. Sol or gel phase could be distinguished according to the concen-trations of polymer and crosslinker. The boundary polymer concentration did not de-pend on the types of gelation and decreased with increasing polymer dimension (molecularweight and conformation). The gelation, which is basically interchain bonding, requires theoccurrence of entanglement. The overlap concentration is thus considered as the minimumpolymer concentration required for gelation.     

A PRELIMINARY STUDY ON THE MECHANISM OF NEONATAL ALLOTRANSPLANTATION TOLERANCE——PARTICIPATION OF SUPPRESSOR CELLS IN THE MEDIATION OF NEONATAL ALLOTRANSPLANTATION TOLERANCE

Using a method from Billingham, an animal model of the neonatal allotransplantation tolerance of SWI to C57BL inbred mice was established and the mechanism of neonatal tolerance established by us was preliminarily studied.Our experiment indicates that the clonal deletion theory is not the unique explanation for the neonatal tolerance and a peripheral active inhibitory mechanism including suppressor cells may participate in meditating and maintaining the neonatal tolerance.The suppressor cells in the neonatal tolerance are radioresistant, but rather sensitive to mitomyein C treatment. These results suggest that suppressor cell population may be nonhomogenous. Further studies about this problem are needed.     

THE HUANGHAI SEA IN THE LAST GLACIAL PERIOD——ACQUISITION AND STUDY OF SOME NEW DATA ON ITS PALEOGEOGRAPHY

Based on the studies on the sediments of the Huanghai Sea (Yellow Sea) formed in thelast glacial period, the complicated palaeogeographic environments of the Huanghai Sea arefound. By the data newly found in the peat and shell layers, it is revealed that the HuanghaiSea is three times exposed and dried as a continent. And the marine sediments are foundfor the first time in the so-called "continental sediment" formed in the early of thelast glacial period. The evolutionary pattern and geological chronicle of natural environ-ments of the Huanghai Sea can primarily be established by the facts that the reversed polarevents of palaeomagnetic variations in the cores are determined and that the peat layer isdated by using ~(14)C.     

THE REDOX BEHAVIOR OF BISMUTH MOLYBDATES——AN XPS STUDY OF Ar~+ ION BOMBARDMENT INDUCED CHEMICAL EFFECT IN UHV

Ar~+ ion bombardment induced reduction effect on Bi_2O_3, MoO_3 and Bi-Mo complex oxides, α-Bi_2Mo_3O_(13), β-Bi_2Mo_2O_9, and γ-Bi_2MoO_6, has been studied with XPS. The results show that, owing to the presence of the oxygen anion bridge in Bi(Ⅲ)-O(Ⅱ)-Mo(Ⅵ), the reduction behavior of Bi(Ⅲ) and Mo(Ⅵ) metal ions in all the three complex oxides is contrary to that in the single oxides. While Mo(Ⅵ) in MoO_3 is reduced to Mo(Ⅵ) in UHV under Ar~+ ion bombardment, the valence state of Bi(Ⅲ) in Bi_2O_3 is unchanged. However, Bi(Ⅲ) in the three complex oxides is reduced to Bi(0) without noticeable reduction of Mo(Ⅵ). Nevertheless, the rates of Bi(Ⅲ) reduction are in correspondence with the difference in Bi/Mo atomic ratio and the crystallographic features of the three phases of bismuth molybdate are decreasing in the order of α-Bi_2Mo_3O_(12)≥β-Bi_2Mo_2O_9>γ-Bi_2MoO_6. A new O -species is observed on the bismuth molybdate surface reduced by Ar~+ ion bombardment.Wc discuss the above phenomena i     

NITROSYL FERROUS CHELATES——FTIR STUDY ON THE COORDINATION OF NITRIC OXIDE TO FERROUS CHELATES IN AQUEOUS SOLUTIONS

Fourier transform infrared spectroscopic studies of coordination compounds of a series of ferrous aminopolyphosphonates and aminopolyacetates with nitric oxide in aqueous solutions have been described for the first time. The polydentate ligands considered include: nitrilotrimethylenephosphonic acid (NTMP), ethylenediaminetetramethylenephosphonic acid (EDTMP), triethylenetetraaminehexaacetic acid (TTHA), diethylenetriaminepentaacetic acid (DTPA), trans-1,2-cyclohexylenedinitrilotetraacetic acid (CyDTA), ethylenedioxydiethylenedinitrilotetraacetic acid (EGTA) and nitrilotriacetic acid (NTA).By examining the spectra of ~(14)NO and ~(15)NO complexes in both D_2O and H_2O solutions, the characteristic frequencies of N-O vibration in the nitrosyls were assigned. A "red" shift of N-O stretching vibration frequency in the chelates was observed as compared with the aquacomplex [Fe(H_2O)_5(NO)]~(2+). With the aid of FTIR technique, the redox reaction of the nitrosyls with sulfite and oxygen were studied. The coor     

STUDY ON THE KINETIC ENERGY BUDGET OF A TYPHOON——BUDGETS OF KINETIC ENERGY IN GENERAL FLOW AND EDDY KINETIC ENERGY

The present paper studies the budgets of kinetic energy in general flow and eddy kinetic energy of Typhoon No. 7, 1975, with a special emphasis on the effects of the divergent and non-divergent winds on the generatioan and transport of kinetic energy. It has been found that:(1) As the typhoon developed and intensified, the generation of kinetic energy of di-vergent wind decreased relatively while that of non-dlvergent wind significantly increased and eventually became the primary term of the generation of kinetic energy. For the entire life spau of the typhoon, the generation of kinetic energy of divergent flow is the primary source of kinetic energy (4W/m~2) with the production of kinetic energy by non-divergent wind being only 0.5 W/m~2.(2) For the budget of eddy kinetic energy, at the initial stage a large amount of eddy kinetle energy needed to be imported from the region outside the typhoon, and at the mature stage a significant amount of eddy kinetic energy was exported. The terms of the work made     

AN INVESTIGATION ON THE ab initio CALCULATION OF INTERMOLECULAR INTERACTION——NON-BONDED INTERACTION IN THE HYDROGEN BOND COMPLEX (HF)_2

An ab initio calculation of the hydrogen bond complex (HF)_2 is given with the 6-311 G~(**) basis set, according to which the potential surface around the balance point of the distancès and the orientations between two HF molecules is obtained. The atomic charges in the system are calculated with the PD/LSF method (potential-derived/least-square-fitting method) and then an analysis of the hydrogen bond interaction between two HF molecules is given with the (exp-6-1) potential function, by means of which it is shown that the main interaction between them is not an electro-static but a charge transfer one. The potential curve between two HF molecules is like a Morse function.     

A STUDY OF DYNAMIC DEVELOPMENT IN RADIOLESION AND CELL DEATH OF EUKARYOTES AFTER EXPOSURE TO IONIZING RADIATION——THE VISUALIZATION OF THE DYNAMIC REACTION BY MEANS OF CYTOCHEMICAL METHOD WITH LACTATE DEHYDROGENASE (LDH) AS NUCLEAR MARKER AND THE RADIAT

The present work deals with the radiation effect on adult rats suffering from acute, whole-body irradiation with cobalt-60 gamma rays of dosages 100R and 300R respectively. The morphological alteration of the lymphocytic nucleus and exhibition of eytochemical reaction of LDH in intra- or extra-nuclear region has been observed at the end of predetermined time intervals after irradiation. A close relationship between the percentage of damage of the lymphocytic nucleus and that of positivity of LDH reaction is seen from their variations with time parallel.From technical color microphotographs which exhibit cytochemical reactions, the existence of enzyme LDH in the nucleus so far obscure has been visually recognized. The events happening in enzymic reaction and the leakage of enzyme across the nuclear envelope reflect the dynamic nature. The ultrastructural alteration of nuclear anomalization confirms the dynamic development of inducing radiolesion. The experimental facts inspire us to attempt an explanatio