4-{Mono/dimethyl(1,1'-biphenyl)-4-yloxy}phthalonitriles have been obtained by nucleophilic substitution of nitro group in 4-nitrophthalonitrile. The prepared phthalonitriles have been used for the ...synthesis of tetra-4-{mono/dimethyl(1,1'-biphenyl)-4-yloxy}phthalocyanines and their complexes with copper, cobalt, and zinc. Spectral characteristics and thermal stability of the prepared compounds have been investigated.
We propose to measure spin observables AN and ANN in elastic pp scattering by using the transversely polarized proton beam and target at momenta p = 12-45 GeV/c. Existence of both polarized target ...and beam gives us unique possibility to measure AN simultaneously and independently for polarized beam (AB) and target (AT) to carry out and verify experimental measurements of single-spin and double-spin (ANN) measurements in diffractive region.
The yields of long-lived nuclear fragments at an angle of 3.5° that originate fromthe fragmentation of carbon ions with an energy of
T
0
= 0.6 GeV per nucleon on a berylliumtarget were measured in ...the FRAGMexperiment at the ITEP TWA heavy-ion accelerator. The momentum spectra of these fragments cover both the fragmentation-maximum region and the cumulative region. The respective differential cross sections change by about five orders of magnitude. The momentum distributions of fragments in the laboratory frame and their kinetic-energy distributions in the rest frame of the fragmenting nucleus are used to test the predictions of four models of ion–ion interactions: BC, INCL++, LAQGSM03.03, and QMD.
Momentum spectra of all long lived fragments from 12C fragmentation at 3.5o on different targets have been measured. Obtained fragmentation peak widths are compared with predictions of statistical ...model. An independence of these widths from target nuclei has been checked with high precision.
The only comparative study of the inclusive pion single-spin asymmetries produced in the interactions of the polarized protons and antiprotons in collisions with unpolarized proton was carried out at ...E-704 experiment. Significant asymmetries were found at large xF and middle pT, π+ and π0 asymmetries have positive signs while π− has negative one in the p↑ + p collisions, while in the p¯↑+p interactions the π− and π0 asymmetries have positive signs while π+ has negative sign. Similar experimental study can be done in the SPASCHARM experiment at U-70 accelerator at IHEP for various secondary particles with the use of 16 GeV polarized proton and antiproton beams.
Momentum spectra of all long-lived fragments from 12C fragmentation at 3.5° have been measured. Differential cross sections span up to five orders of its magnitude. The preliminary results are ...compared with predictions of two transport codes: INCL++ and LAQGSM03.03. Both models give a good description of the data except few items which are discussed.
to study the safety and efficacy of using a new method of performing percutaneous nephrolithotripsy under ultrasound and endovisual control.
A comparative analysis of the results of percutaneous ...nephrolithotripsy performed under ultrasound and endovisual control in 515 (84.1%) patients (main group) and percutaneous nephrolithotripsy performed under fluoroscopic control in 97 (15.8%) patients (control group) was carried out. The groups did not differ in age, gender, body mass index, the number and location of stones, and the duration of the disease. In the main group, there were more patients with large, staghorn and X-ray negative stones, and there were also more patients with kidney block. To analyze and stratify the complications of percutaneous nephrolithotripsy, we used a modified classification of surgical complications according to the Clavien-Dindo system. Statistical analysis of the material was carried out using the licensed package IBM SPSS Statistics Version 14.0.1.
The average duration and number of stages of operations in the main and control groups was the same. Almost all operations in groups (93,8% 91,8%) were performed in one step (=0,55). In the main group, in the vast majority of cases95,1%; <0,001), percutaneous nephrolithotripsy was performed through one puncture access, with the degree of complete elimination of stones statistically the same as in the control group (80.6% in the main group and 70.1% in the control group, p=0.158). The degree of decrease in hemoglobin in the postoperative period in the groups did not differ (=0,271). The frequency of postoperative complications in both groups did not differ statistically: in the control - 33.0%; in the main group - 29.3% (p=0.469). The severity of complications according to Clavien-Dindo did not differ in the groups either (p=0.17).
Percutaneous nephrolithotripsy under ultrasound and endovisual control is a safe and effective operation. The results of the operation and the frequency of early complications are comparable with the traditional X-ray control technique.
Momentum distributions of nuclear fragments at an angle of 3.5° in the interaction of 0.6-GeV/nucleon carbon ions with a beryllium target are measured in the FRAGM experiment on the ITEP-TWAC ...facility. The measured spectra are used for testing predictions of four ion–ion interaction models: BC, QMD, INCL, and LAQGSM03.03, and for comparison with the analytical parameterization within the thermodynamic concept of fragmentation.
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