Under general feasible set,in consideration of the algorithms for nonsmooth equations and the properties of projection map,the algorithms using the normal equation to solve are discussed.

Electron crystallographic analysis of MII crystal shows a lattice with parameters of a =20 6(±0 1) nm, b =16 1(±0 1) nm and γ = 90(±1)°, and the projection map with P2 symmetry is produced at the resolution of 2 06 nm.

A new pattern recognition method called the optimal map recognition(OMR)method has been proposed to select the optimal projection map among various pattern recognition maps.

The optimal projection map can be used for the computer aided molecular sieving of N (3 oxo 3,4 dihydro 2 H benzo[1,4]oxazine 6 carbonyl)guanidines. The designed samples with probably high Na/H exchange inhibitory activities were determined in such a way that their representing points should be in the optimal region formed by the OMR method.

. The projection map of the negatively stained two_dimensional crystal of LHC_Ⅱ complex shows that the crystal has p3 symmetry, lattice constant 15.4 nm×15.4 nm, which is different from the LHC_Ⅱ of spinach (Spinacia oleracea L.)

If W is the Weyl group of G and e, f ∈ Λ with e ≤ f, we introduce a projection map from WeW to WfW.

The range projection map is, up to a Jordan homomorphism, the only natural map from the spectral lattice onto the projection lattice.

In operator algebra theory, a conditional expectation is usually assumed to be a projection map onto a sub-algebra.

The projection map seems to indicate an enzyme conformation somewhat similar to vanadate-induced crystals but different from lanthanide-induced crystals of Ca2*-ATPase.

Ca2+-ATPase molecules appear as quasi-triangular blobs in the projection map and seem to form dimers.

This paper introduces three Kinds of methods to arrange drill holes on the pitching orebody.1).Projection method of plunge-line.According to orebody surficial attitude,we can obtained the projection range of deep-seated orebody by stereog-raphic projection, and then arrange drill holes.2).Axial-line method of orebody:At first work out the patterns of every level horizontal projection of orebody to find its axial-line,then arrange drill holes based on the downward- extending orientation of this line.3)Longitudinal...

This paper introduces three Kinds of methods to arrange drill holes on the pitching orebody.1).Projection method of plunge-line.According to orebody surficial attitude,we can obtained the projection range of deep-seated orebody by stereog-raphic projection, and then arrange drill holes.2).Axial-line method of orebody:At first work out the patterns of every level horizontal projection of orebody to find its axial-line,then arrange drill holes based on the downward- extending orientation of this line.3)Longitudinal projection method: According to orebodies in control drill holes,orebody boundaries will be delineated on longitudinal projection map and drill holes can be arranged by this map combined with exploratory profiles.

The fault effect produced by moving ore bodies by fault results in "overlapping" or "opening" of the ore bodies on the horizontal projection map. The accuracy of the reserve calculation should be affected without consideration to the effect.Therefore,the horizontal projection location of the crossline between ore body and fault, that is the area of "overlapping" or "opening" must be decided.The cross form between ore body and fault is changable, but the real relation forms are just two types, those...

The fault effect produced by moving ore bodies by fault results in "overlapping" or "opening" of the ore bodies on the horizontal projection map. The accuracy of the reserve calculation should be affected without consideration to the effect.Therefore,the horizontal projection location of the crossline between ore body and fault, that is the area of "overlapping" or "opening" must be decided.The cross form between ore body and fault is changable, but the real relation forms are just two types, those are same direction cross form with acute angle and same direction cross form with obtuse angle. Two formulas have been obtained by deducing the geometric figures and numbers, which can be used to calculate the horizontal projection location of the crossline between ore body and fault. It is helpful for the reserve calculation.

The fractured gas reservoirs in east Sichuan,no matter they are anticline traped ones or structuralfracture pinch traped ones,are all controlled by tectonic deformation.The hydrocarbon enrichment isclosely ralated to Himalayan tectonic evolution.The tectonic evolution of the present region inHimalayan orogen has always been disputed,and the division of formation stages differs from eachother.Therefore,the evolution in hydrocarbon-bearing structurs may also be different.In application of structural geometric...

The fractured gas reservoirs in east Sichuan,no matter they are anticline traped ones or structuralfracture pinch traped ones,are all controlled by tectonic deformation.The hydrocarbon enrichment isclosely ralated to Himalayan tectonic evolution.The tectonic evolution of the present region inHimalayan orogen has always been disputed,and the division of formation stages differs from eachother.Therefore,the evolution in hydrocarbon-bearing structurs may also be different.In application of structural geometric and directional filter analysis,the structures can be divided into four fold sys-tems in this paper according to the folds strikes,the dipping direction of pivots,the closure,cross-sectionpattern,amplitude and depth of folds as well as the configuration on sterographic projection map.Thenthe evolution of these folds is divided into four generation based on the alternative relationship of bigand medium sized folds and the displaced fabric type of the pivots of small sized folds.The distributionand superimposition of the fold systems in south,north and central blocks differ greatly from eachother due to the control of two northwest strike basement rifts.Through rebuilding tectonic evolution history,the authors consider that,traps formed earlier havethe priority to trap oil and higher enrichment,conversely,the enrichment may low;synclines that up-lifted higher in amplitude and emerged older in strata may have poor preservation condition,otherwise,the condition may good.Exploration in this area has proved that the ratio of success can reach 75%for the wells located according to the above mentioned.