X-ray absorption study of the ferromagnetic Cu moment at the YBa_(2)Cu_(3)O_(7)/La_(2/3)Ca_(1/3)MnO_(3) interface and variation of its exchange interaction with the Mn moment

With x-ray absorption spectroscopy and polarized neutron reflectometry we studied how the magnetic proximity effect at the interface between the cuprate high-TC superconductor YBa_(2)Cu_(3)O_(7) (YBCO) and the ferromagnet La_(2/3)Ca_(1/3)MnO_(3) (LCMO) is related to the electronic and magnetic properties of the LCMO layers. In particular, we explored how the magnitude of the ferromagnetic Cu moment on the YBCO side depends on the strength of the antiferromagnetic (AF) exchange coupling with the Mn moment on the LCMO side. We found that the Cu moment remains sizable if the AF coupling with the Mn moments is strongly reduced or even entirely suppressed. The ferromagnetic order of the Cu moments thus seems to be intrinsic to the interfacial CuO_(2) planes and related to a weakly ferromagnetic intraplanar exchange interaction. The latter is discussed in terms of the partial occupation of the Cu 3d_(3z^(2)−r^(2)) orbitals, which occurs in the context of the so-called orbital reconstruction of the interfacial Cu ions.

Phosphoramidite-Cu(OTf)2 complexes as chiral catalysts for 1,3-dipolar cycloaddition of iminoesters and nitroalkenes

Chiral complexes formed by phosphoramidites such as (Sa,R,R)-9 and Cu(OTf)2 are excellent catalysts for the general 1,3-dipolar cycloaddition between azomethine ylides and nitroalkenes affording the corresponding tetrasubstituted proline esters mainly as exo-cycloadducts in high er at room temperature. The exo-cycloadducts can be obtained in enantiomerically pure form just after simple recrystallization. DFT calculations support the stereochemical results.

Analysis of Mn nodules from cruise GH72-2

The GH72-2 shipborne survey was carried out in the northwest Pacific during 31 days under the 'Basic investigations for exploration of deep sea mineral resources' program. The sediments encountered could be classified as follows: 1) Most of the brown clays occur on the abyssal plain of the basins at depth over 4500m. 2) Calcareous oozes are predominant at the top, slope and foot of seamounts and guyots. 3) Terrigeneous sediments are distributed near islands. The concentrated zone of ferromanganese nodules was located in the Magellan seamounts area. However, the metal contents in Mn, Cu, Ni and Co for these nodules are relatively poor, and these ferromanganese deposits occur at a depth over 5000m. It is interesting to note that the shape of the nodules is sometimes nearly spherical, and that the chemical composition of the nodules is characterized by the low ratio Mn/Fe and Co/Ni.

Propagation of elastic waves through structural connections. Work carried out...for the Applied Physics Laboratory, Johns Hopkins University under contract number APL/CU-33031-2.

[1] Progress report no. 1, Jan. 15, 1954.--[2] Final report, June 30, 1954.

Operator, organizational, direct support, and general support maintenance manual : loader, scoop type, DED, 4 wheel drive, pneumatic tired, hinged frame steer, 2 1/2 cu. yd. multi-purpose bucket (J.I. Case model MW-24), FSN 3805-253-0627.

"December 1970."

Unit, direct support, and general support maintenance repair parts and special tools lists (including depot maintenance repair parts and special tools lists) : crane-shovel, crawler mounted, diesel engine driven, 12-1/2 ton capacity, rated with 3/4 cu yd (NSN 3810-00-937-3939), Thew-Lorain model L-36M.

"August 1992."

Operator, organizational, field, and depot maintenance manual : loader, scoop type, diesel engine, 4 wheel drive, rear wheel steerable pneumatic tires, 2 1/2 cu yd, w/multi-segment bucket (Frank G. Hough model H-90CM), FSN 3805-995-3236.

"February 1964."

Organizational maintenance repair parts and special tools lists : loader, scoop type, diesel engine, 4-wheel drive, rear wheel steerable pneumatic tires, 2 1/2 cu yd, w/ multi-segment bucket, (Frank G. Hough model H-90CM) FSN 3805-995-3236.

Includes index.

Organizational maintenance repair parts and special tools lists : loader, scoop type, DED, 4-wheel drive, pneumatic tired hinged frame steer 2 1/2 cu yd, multi-purpose bucket, NSN 3805-00-169-4711, J.I. Case model MW24B.

Includes index.

Direct support and general support maintenance repair parts and special tools lists (including depot maintenance repair parts and special tools) : loader, scoop type, DED, 4-wheel drive, pneumatic tired hinged frame steer 1 1/2 cu yd, multi-purpose bucket, NSN 3805-00-169-4711, J.I. Case model MW24B.

Includes index.

Unit maintenance repair parts and special tools lists : loader, scoop type, DED, 4 x 4, articulated frame steer, 4 1/2 to 5 cu. yd., (CCE), Army model H100C RB, type I with 4 1/2 cu. yd. rock bucket, NSN 3805-01-052-9042, Army model H100C GPB, type II with 5 cu. yd. general purpose bucket, NSN 3805-01-052-9043.

Includes indexes.

Operator and organizational maintenance manual : loader, scoop type, pneu-tired, diesel engine driven, hinged frame steer with 2 1/2 cu yd multi-purpose bucket, Allis-Chalmers model 645M, FSN 3805-051-9359.

"July 1968."

Operator, organizational, direct support, and general support maintenance manual : loader, scoop type, DED, 4 wheel drive, pneumatic tired, hinged frame steer, 2 1/2 cu. yd. multi-purpose bucket (J.I. Case model MW-24), FSN 3805-253-0627.

"December 1970."

Organizational, DS, DS, and depot maintenance manual : scraper, earthmoving, towed, 18 cu yd struck [i.e. cu yds truck] capacity scoop, hydraulic, 2 wheels, pneumatic tires (Euclid model 58SH-G), FSN 3805-00-069-3316.

Includes index.