Showing papers by "Military Academy published in 2008"
TL;DR: The as-prepared cobalt oxide (assigned as CoO x ) was fabricated by precipitation-oxidation from aqueous cobalt nitrate solution using sodium hydroxide and oxidation with hydrogen peroxide as mentioned in this paper.
707 citations
TL;DR: In this article, the use of methyl ester obtained from waste frying oil (WFO) is examined as an experimental material and the results obtained with the aim of comparison from the measures of torque, power, and specific fuel consumptions are nearly the same.
338 citations
TL;DR: The mechanism includes a negative feedback that makes peptide-induced pores stable with a well defined size, contrary to the suggestion that peptides disintegrate the membrane in a detergent-like manner.
Abstract: How antimicrobial peptides form pores in membranes is of interest as a fundamental membrane process. However, the underlying molecular mechanism, which has potential applications in therapeutics, nonviral gene transfer, and drug delivery, has been in dispute. We have resolved this mechanism by observing the time-dependent process of pore formation in individual giant unilamellar vesicles (GUVs) exposed to a melittin solution. An individual GUV first expanded its surface area at constant volume and then suddenly reversed to expanding its volume at constant area. The area expansion, the volume expansion, and the point of reversal all match the results of equilibrium measurements performed on peptide–lipid mixtures. The mechanism includes a negative feedback that makes peptide-induced pores stable with a well defined size, contrary to the suggestion that peptides disintegrate the membrane in a detergent-like manner.
245 citations
TL;DR: Five other statistical functions are analysed to investigate their applicability as suitable tools to evaluate isotherm model fitness, namely the Pearson correlation coefficient, the coefficient of determination, the Chi-square test, the F-test and the Student's T-test, using the commonly-used functions as references.
233 citations
TL;DR: Changes in muscle mass and strength following 6-day (12 sessions) of low-intensity resistance training requires BFR to produce responses comparable to the effect of several weeks of high- intensity resistance training.
Abstract: Traditional high-intensity resistance training performed 2-3 times per week induces muscle hypertrophy, at least, in 5 weeks (i.e. 10-15 training sessions). To examine the effect of a higher training frequency (12 sessions in 6 days), healthy young men performed low-intensity resistance training with (n=8, LIT-BFR) and without (n=8, LIT-CON) leg blood flow restriction with cuff inflation (BFR) twice per day for 6 days. Training involved 4 sets of knee extension exercise (75 total contractions) at 20% 1-RM. Significant muscle hypertrophy was observed only in the LIT-BFR group as estimated muscle-bone cross-sectional area (CSA) (2.4%), MRI-measured mid-thigh quadriceps muscle CSA (3.5%) and quadriceps muscle volume (3.0%) increased. The resulting hypertrophic potential (% change in muscle size divided by number of training sessions; ∼0.3% per session) is similar to previously reported traditional high-intensity training (0.1 to 0.5% per session). Improved 1-RM knee extension strength (6.7%) following LIT-BFR training was accounted for by increased muscle mass as relative strength (1-RM/CSA) did not change. There was no apparent muscle damage associated with the exercise training as blood levels of creatine kinase, myoglobin, and interleukin-6 remained unchanged throughout the training period in both training groups. A single bout of training exercise with and without BFR produced no signs of blood clotting as plasma thrombin-antithrombin complex, prothrombin fragment 1,2 and D-dimer were unchanged. In conclusion, changes in muscle mass and strength following 6-day (12 sessions) of low-intensity resistance training requires BFR to produce responses comparable to the effect of several weeks of high-intensity resistance training.
122 citations
TL;DR: IPP-201101 was found to be safe and well tolerated by subjects and significantly improved the clinical and biologic status of lupus patients.
Abstract: Objective
To assess the safety, tolerability, and efficacy of spliceosomal peptide P140 (IPP-201101; sequence 131–151 of the U1-70K protein phosphorylated at Ser140), which is recognized by lupus CD4+ T cells, in the treatment of patients with systemic lupus erythematosus (SLE).
Methods
An open-label, dose-escalation phase II study was conducted in two centers in Bulgaria. Twenty patients (2 male and 18 female) with moderately active SLE received 3 subcutaneous (SC) administrations of a clinical batch of P140 peptide at 2-week intervals. Clinical evaluation was performed using approved scales. A panel of autoantibodies, including antinuclear antibodies, antibodies to extractable nuclear antigens (U1 RNP, SmD1, Ro/SSA, La/SSB), and antibodies to double-stranded DNA (anti-dsDNA), chromatin, cardiolipin, and peptides of the U1-70K protein, was tested by enzyme-linked immunosorbent assay (ELISA). The plasma levels of C-reactive protein, total Ig, IgG, IgG subclasses, IgM, IgA, and IgE, and of the cytokines interleukin-2 and tumor necrosis factor α were measured by ELISA and nephelometry.
Results
IgG anti-dsDNA antibody levels decreased by at least 20% in 7 of 10 patients who received 3 × 200 μg IPP-201101 (group 1), but only in 1 patient in the group receiving 3 × 1,000 μg IPP-201101 (group 2). Physician's global assessment of disease activity scores and scores on the SLE Disease Activity Index were significantly decreased in group 1. The changes occurred progressively in the population of responders, increased in magnitude during the treatment period, and were sustained. No clinical or biologic adverse effects were observed in the individuals, except for some local irritation at the highest concentration.
Conclusion
IPP-201101 was found to be safe and well tolerated by subjects. Three SC doses of IPP-201101 at 200 μg significantly improved the clinical and biologic status of lupus patients.
118 citations
TL;DR: It is shown that not only does curcumin thin the lipid bilayer, it might also weaken its elasticity moduli, which implies thatCurcumin may affect the function of membrane proteins by modifying the properties of the host membrane.
118 citations
TL;DR: Dual measurements of membrane thickness change and membrane area change due to the binding of the amphipathic drug curcumin are described, suggesting that the binding states of curcuming are typical for amphipATHic drugs.
91 citations
TL;DR: In this article, the authors present an analysis of the Polish construction market with examples of project risk assessment taking into consideration one of the biggest markets in Central Europe, and provide examples for applying the risk assessment process in construction projects.
Abstract: This paper presents an analysis of the Polish construction market with examples of project risk assessment taking into consideration one of the biggest markets in Central Europe The writer has conducted research in identification and quantification of construction risks based on the Polish market that has developed considerably since joining the European Union The risk analysis consists of verbal and quantitative description The specification of risk indicators is directly linked to the Polish construction market and the writer has provided examples for applying the risk assessment process in construction projects A summary of the analysis is presented in the final part of the paper
85 citations
TL;DR: The development of a polymerase chain reaction (PCR)-based assay that is able to detect Blastocystis directly from human faeces and combined with single strand conformational polymorphism (SSCP) analysis and/or sequencing of the respective PCR product, the protocol can classify BlastocyStis among the nine established subtypes.
70 citations
TL;DR: The described PCR method proved efficient for the detection of pathogenic Leishmania species in various clinical samples, most importantly in peripheral blood samples, and was capable of identifying all Leishmaniasis species commonly encountered in Greece.
Abstract: The aim of this study was to develop a simple, low-cost method for the detection and species differentiation of Leishmania directly from clinical samples, for routine use in a parasitology laboratory. A total of 87 samples was used, including 60 peripheral blood, seven bone marrow and 17 skin lesion material samples, derived from Greek patients with visceral or cutaneous leishmaniasis, and three reference strains. PCR was performed using primers designed to amplify the internal transcribed spacer 1 (ITS1) region of the rRNA gene. Identification of the Leishmania species studied was achieved by digestion with a single restriction endonuclease (RFLP), single-strand conformational polymorphism (SSCP) and DNA sequencing of the PCR-generated fragments. Typing identified all visceral and one cutaneous leishmaniasis strains as L. infantum, twelve of the cutaneous leishmaniasis strains as L. tropica and four as L. major. The described PCR method proved efficient for the detection of pathogenic Leishmania species in various clinical samples, most importantly in peripheral blood samples. Furthermore, PCR followed by a simple RFLP using a single restriction endonuclease was capable of identifying all Leishmania species commonly encountered in Greece.
TL;DR: This paper seeks to present a novel face segmentation and facial feature extraction algorithm for gray intensity images (each containing a single face object) based on the Voronoi diagram, a well-known technique in computational geometry, which generates clusters of intensity values using information from the vertices of the external boundary of Delaunay triangulation.
TL;DR: In this article, the authors observed the time-dependent process of pore formation in individual giant unilamellar vesicles (GUVs) exposed to a melittin solution and found that an individual GUV first expanded its surface area at constant volume and then suddenly reversed to expanding its volume at constant area.
Abstract: How antimicrobial peptides form pores in membranes is of interest as a fundamental membrane process. However, the underlying molecular mechanism, which has potential applications in therapeutics, nonviral gene transfer, and drug delivery, has been in dispute. We have resolved this mechanism by observing the time-dependent process of pore formation in individual giant unilamellar vesicles (GUVs) exposed to a melittin solution. An individual GUV first expanded its surface area at constant volume and then suddenly reversed to expanding its volume at constant area. The area expansion, the volume expansion, and the point of reversal all match the results of equilibrium measurements performed on peptide–lipid mixtures. The mechanism includes a negative feedback that makes peptide-induced pores stable with a well defined size, contrary to the suggestion that peptides disintegrate the membrane in a detergent-like manner.
TL;DR: A half-life kinetic model has been proposed to predict the half-lives of explosive oxidation in the goethite/H2O2 system and showed that target compounds were adsorbed on the surface ofGoethite while the oxidation was proceeding.
TL;DR: The clinical spectrum of renalBD shows a wide variation and routine urine analysis and measurement of serum creatinine level are needed for early diagnosis of renal BD.
TL;DR: The results indicate that TS stimulated BMDCs leads to the polarization of the immune response towards regulatory and Th2 type.
Abstract: Pathogen-derived products have the capacity to induce maturation of bone marrow-derived dendritic cells (BMDCs)into populations of effectors cells that polarize Th cells toward Th1 or Th2 phenotype via different mechanisms. Since those mechanisms are not entirely clear for helminths, and almost completely unknown for Trichinella spiralis(TS), we started an investigation of the effects of TS antigens (four different antigens isolated from all three life-cycle stages of parasite)on maturation of BMDCs and their potential to present TS antigens. The expression of MHC class II, costimulatory molecules CD86, CD54, IL-10 and IL-12p70 cytokine production were measured after 2 days of BMDCs cultivation with TS antigens. While parasitic antigens did not significantly alter the expression of MHC II, most of them, except crude muscle larvae antigens, up-regulated the expression of costimulatory molecules. BMDCs, primed with all TS antigens, released increased amounts of IL-10 and decreased amounts of IL-12p70. BMDCs, primed with TS antigens, induced significant proliferation of syngeneic TS sensitized lymph nodes cells and also stimulated the production of IL-4 by T cells purified from of TS infected DA rats. The results indicate that TS stimulated BMDCs leads to the polarization of the immune response towards regulatory and Th2 type.
TL;DR: Allele frequencies for 16 STR loci were calculated for a sample of 300 unrelated individuals from Greece and low genetic distances were found between these data and those previously published for other neighbouring European populations.
Abstract: Allele frequencies for 16 STR loci (D8S1179, D21S11, D7S820, CSF1PO, D3S1358, TH01, D13S317, D16S539, D2S1338, D19S433, vWA, TPOX, D18S51, D5S818, FGA, and SE33) were calculated for a sample of 300 unrelated individuals from Greece. No deviations from Hardy-Weinberg equilibrium were observed for all loci. The combined power of discrimination (PD) and the combined power of exclusion (PE) for the 16 tested STR loci were 0.999999999 and 0.999999816, respectively. Population comparisons were carried out and low genetic distances were found between our data and those previously published for other neighbouring European populations.
TL;DR: It is concluded that hyperplasia of hair follicles and other adnexa can be seen not only in the condition currently known as PLF, but also in genuine cutaneous lymphomas and may be just a happenstance secondary to a basic pathologic process.
Abstract: We studied 53 cutaneous lymphoproliferative disorders, all of which manifested hair follicle hyperplasia. There were 42 cases conforming to the description of pseudolymphomatous folliculitis (PLF) and 11 cases of authentic lymphomas including mycosis fungoides, CD30+ anaplastic large cell lymphoma, diffuse large B-cell lymphoma, B-cell small cell lymphoma/leukemia, and peripheral T-cell lymphoma, not otherwise specified. All patients with PLF clinically presented with a solitary nodule preferentially involving the face. Beside hair follicle hyperplasia, the typical features were a dense infiltrate of small well-differentiated lymphocytes, lymphoplasmacytoid cells, plasma cells, and epithelioid histiocytes forming tiny granulomas. Some unusual or worrisome features recognized included eccrine/apocrine duct hyperplasia, subcutis/muscle infiltration, lymphocyte "smudging," single file infiltration, and large atypical cells. Immunohistochemically, T-cell predominant cases dominated in the series. All 34 tested cases revealed a polyclonal pattern of kappa and lambda immunoglobulin (Ig) light chain expression. In 4 cases, scattered CD30+ cells were identified. Monoclonal rearrangements of T-cell receptor (TCR) and IgH genes were detected in 19 and 3 cases respectively, including 1 case with dual T-cell receptor/IgH rearrangement. Three of 30 tested cases proved positive for herpes simplex virus-1, whereas herpes simplex virus-2 always tested negative. Of 31 cases tested for Borrelia burgdorferi, 30 specimens were negative. In 9 cases, fluorescent in situ hybridization for t(11;18) and t(14;18) revealed none of the above translocations. The most common treatment modality was surgical removal. Forty patients with a mean follow-up of 3.7 years included 39 patients with no evidence of disease and 1 individual with local recurrence. The comparison of "clonal cases of PLF" and those with polyclonal population or in which clonality remained undetermined revealed no differences between the 2 groups in the clinical presentation, pathologic, and immunohistochemical features. We conclude that hyperplasia of hair follicles and other adnexa can be seen not only in the condition currently known as PLF, but also in genuine cutaneous lymphomas and may be just a happenstance secondary to a basic pathologic process.
TL;DR: It is found that L1J1 elicits a better anti-inflammatory efficacy after a single dose i.a administration in comparison with commercial product, VE-CP®, which is used topically.
Abstract: Recent research into the complex and varied components of rheumatoid arthritis (RA) is leading to the development of more effective targets for pharmaceutical approach than even before. Current treatment of RA frequently includes the use of nonsteroidal anti-inflammatory drugs, such as Diclofenac sodium (DFNa) in spite of the severe adverse effects. Local application and incorporation of the drugs in liposome based formulations may reduce those side effects and improve the efficacy of drugs by reducing the availability of them in systemic circulation and increasing accumulation and retention time in the sites of inflammation. Herein, anti-inflammatory efficacy of the DFNa containing lipogelosome formulations (L1J1) was evaluated and found that L1J1 elicits a better anti-inflammatory efficacy after a single dose i.a administration in comparison with commercial product, VE-CP®, which is used topically. Histopathological examination of the opened joints showed that joints treated with L1J1, had significantly...
TL;DR: This study presents a patient with clinical features of SPP who later developed plaque-stage MF, as seen both clinically and pathologically and to compare the clinicopathologic features of this unique case with 27 "nonprogressive" SPP cases.
Abstract: Background It is unsettled whether small plaque parapsoriasis (SPP) represents an inflammatory dermatosis or has a potential to transform into mycosis fungoides (MF) or is, in fact, MF. The literature contains no fully documented example of progression of SPP into MF. Objective The purpose of our study was to present a patient with clinical features of SPP who later developed plaque-stage MF, as seen both clinically and pathologically and to compare the clinicopathologic features of this unique case with 27 "nonprogressive" SPP cases. Methods This study is a prospective and retrospective evaluation of 28 patients, using light microscopy, immunohistochemistry, and molecular biology. Results A 56-year-old man with a 3-year history of persistent SPP with typical small ( Limitations Oligoclonal and monoclonal patterns were overrepresented in the SPP group, which may be due to the low amount and, probably, suboptimal quality of DNA used in the TCR-gamma rearrangement studies. Conclusions Occasionally patients with the clinical and pathologic presentation of SPP may develop typical features for MF. This event seems to be extremely rare; at present there appears to be no means to predict such a course. The vast majority of SPP patients will never have disease progression to MF.
11 Apr 2008
TL;DR: In this paper, the authors presented an algorithm for hyperspectral anomaly detection based on the Mahalanobis distance computed using robust statistics which are estimated based on minimum generalized variance of the sample pixels.
Abstract: Anomaly detection for hyperspectral imaging is typically based on the Mahalanobis distance. The sample statistics for Mahalanobis distance are not resistant to the anomalies that are present in the sample pixels. Consequently, the sample statistics do not estimate the corresponding population parameters accurately. In this paper, we will present an algorithm for hyperspectral anomaly detection based on the Mahalanobis distance computed using robust statistics which are estimated based on the minimum generalized variance of the sample pixels. Numerical results based on actual hyperspectral images will be presented.
TL;DR: In this paper, a printed coplanar two-antenna element for WLAN operation in the 24 and 5 GHz bands for dual-module applications in a MIMO system is proposed.
Abstract: A printed coplanar two-antenna element suited for WLAN operation in the 24- and 5-GHz bands for dual-module applications in a MIMO system is proposed The two-antenna element is comprised of one planar inverted-F antenna (PIFA) and one monopole antenna, both printed and integrated in a coplanar configuration on a narrow dielectric substrate with the dimensions 50 mm × 11 mm The two antennas are excited using two separate feeds with a common ground plane By utilizing two proposed elements spaced 10-mm apart in the lateral direction with an optimized arrangement, the four-antenna MIMO system obtained can achieve optimal isolation between any two of the four antennas In comparison with the conventional dual-band antenna with a single feed, the proposed two-antenna element allows the 24- and 5-GHz signals to be simultaneously received or transmitted with no external switch circuit between the antenna and modules required © 2008 Wiley Periodicals, Inc Microwave Opt Technol Lett 50: 1635–1638, 2008; Published online in Wiley InterScience (wwwintersciencewileycom) DOI 101002/mop23540
TL;DR: This assay represents a simple, rapid, reliable approach for the detection and discrimination of methicillin-and mupirocin-resistant staphylococci.
Abstract: Staphylococcal hospital isolates (n = 166) were tested in a touchdown multiplex-polymerase chain reaction assay for the identification of methicillin and mupirocin resistance and discrimination of S. aureus (femA gene) from coagulase negative staphylococci and other bacteria. All isolates harbored the 16SrDNA (Staphylococcus genus specific internal control) gene, and 130 (78 %) the mecA (methicillin resistance) gene. Fifty-seven (44 %) of these were determined as methicillin-resistant S. aureus, while the remaining 73 (56 %) were methicillin-resistant coagulase-negative staphylococci. Seventy-five (45 %) isolates harbored the ileS-2 (high-level mupirocin resistance) gene and were determined as mupirocin-resistant. This assay represents a simple, rapid, reliable approach for the detection and discrimination of methicillin-and mupirocin-resistant staphylococci.
TL;DR: The Khewera Mines located in Pakistan contain the world's second largest reserves of rock salt, and the concentrations of naturally occurring radionuclides in rock salt were investigated to find that the mean annual effective dose for adults was lower than the average annually effective dose worldwide.
Abstract: The Khewera Mines located in Pakistan contain the world's second largest reserves of rock salt. Rock salt is used in Pakistan in food recipes. It was decided to investigate the concentrations of naturally occurring radionuclides in rock salt from the Khewera Mines. Samples of rock salt were collected from 10 different locations and analysed by gamma spectrometry. The mean activity concentrations of 226Ra, 232Th and 40K were 790 +/- 262, 640 +/- 162 and 23 000 +/- 6000 mBq kg(-1), respectively. The mean annual effective dose due to the intake of natural radionuclides from rock salt for adults was estimated to be 0.0638 +/- 0.015 mSv, which is lower than the average annual effective dose of 0.29 mSv received per caput worldwide due to the ingestion of natural radionuclides, as reported by the United Nations Scientific Committee on the Effects of Atomic Radiation in 2000.
TL;DR: The performance of an RF amplifier and digital modulation techniques in the presence of high-power electromagnetic interference (EMI) is presented to provide existing and next generation communication systems with critical information and suggests that nonconstant envelope digital modulation schemes are more susceptible to EMI.
Abstract: We present the performance of an RF amplifier and digital modulation techniques in the presence of high-power electromagnetic interference (EMI) to provide existing and next generation communication systems with critical information. An advanced measurement setup comprised of a large-signal network analyzer is used to characterize the adverse effects of EMI on the device characteristics of an RF power amplifier and the performance of digital modulation schemes. Furthermore, our analysis incorporated hybrid numerical tools, such as the hybrid S-parameter method to carry out an extensive EMI analysis of digital modulation schemes in the presence of complex structures, such as cylindrical cavities. Our studies yield critical information for the communication systems. For instance, our analysis suggests that digital modulation schemes are more susceptible to EMI than the RF power amplifier that processes the modulated signals. Power levels of the order of megawatts are required to have a notable impact on the device characteristics of an RF amplifier in the presence of a missile-like body, whereas, much lower power levels are sufficient to degrade the performance of a digital modulation scheme as long as it is within the bandwidth of the modulated signal. Our analysis further indicates that nonconstant envelope digital modulation schemes are more susceptible to EMI.
TL;DR: This series represents one of the highest reported rate of ear involvement in Klippel-Feil syndrome and found no correlation between the identified ear pathologies and the skeletal and extraskeletal malformations.
TL;DR: In this paper, the authors deal with the calibration procedures of an Archimedean spiral antenna used for a stepped frequency continuous wave radar (SFCW), which works from 400MHz to 4845MHz.
Abstract: This paper deals with the calibration procedures of an Archimedean spiral antenna used for a stepped frequency continuous wave radar (SFCW), which works from 400MHz to 4845MHz. Two procedures are investigated, one based on an error-term flow graph for the frequency signal and the second based on a reference metallic plate located at a certain distance from the ground in order to identify the phase dispersion given by the antenna. In the second case, the received signal is passed in time domain by applying an ifft, the multiple reflections are removed and the phase variation due to the time propagation is subtracted. After phase correction, the time domain response as well as the side lobes level is decreased. The antenna system made up of two Archimedean spirals is employed by SFCW radar that operates with a frequency step of 35MHz.
TL;DR: In this paper, it was shown that a homogeneous elliptic operator with constant coefficients and locally bounded fundamental solution can be uniformly approximated on the plane by solutions of the same equation having singularities outside the plane.
Abstract: Let X be an arbitrary compact subset of the plane. It is proved that if L is a homogeneous elliptic operator with constant coefficients and locally bounded fundamental solution, then each function f that is continuous on X and satisfies the equation Lf = 0 at all interior points of X can be uniformly approximated on X by solutions of the same equation having singularities outside X. A theorem on uniform piecemeal approximation of a function is also established under weaker constraints than in the standard Vitushkin scheme. Bibliography: 24 titles.
TL;DR: Activity concentrations of (210)Pb, which is a ( 210)Po precursor in the (238)U-decay series, were measured in cigarette tobaccos to assess the radiological effects associated with the tobacco smoking for the smokers.
Abstract: Cigarette smoking is a source of radiation exposure due to the concentrations of natural radionuclides in the tobacco leaves. From the health point of view, measurement of (210)Pb and (210)Po contents in cigarette tobacco is important to assess the radiological effects associated with the tobacco smoking for the smokers. In the present study, activity concentrations of (210)Pb, which is a (210)Po precursor in the (238)U-decay series, were measured in cigarette tobaccos. Samples of nine different commonly sold brands of cigarette tobaccos were analysed by employing a planar high purity germanium (HPGe) low background detector. Activity concentrations of (210)Pb were measured from its gamma peak at 47 keV. Mean activity concentration of (210)Pb was measured to be 13 +/- 4 Bq kg(-1) from all samples analysed. The annual committed effective dose for a smoker and the collective committed effective dose corresponding to annual cigarettes production were estimated to be 64 +/- 20 microSv and 0.6 x 10(2) man-Sv, respectively.
TL;DR: In this article, a model of a thin straight strip with a uniformly curved section and with different uniform boundary conditions on the opposite edges subjected to the homogeneous magnetic field is theoretically analyzed within the framework of the linear Schrodinger equation and is applied to the study of the processes in the bent magnetic multilayers and superconducting films.
Abstract: A model of a thin straight strip with a uniformly curved section and with different uniform boundary conditions on the opposite edges subjected to the homogeneous magnetic field $\mathbf{B}$ is theoretically analyzed within the framework of the linear Schr\"odinger equation and is applied to the study of the processes in the bent magnetic multilayers and superconducting films. In particular, for the inner Dirichlet and outer Neumann boundaries, it is shown that bend-induced enhancement of the superconductivity survives in the magnetic field with the order parameter $\ensuremath{\Psi}(\mathbf{r})$ being pushed stronger and stronger to the Neumann surface with increasing $B$ and, simultaneously, the area where the nucleation of the superconductivity takes place is spread more and more in the straight arms. Various magnetotransport properties of the film such as interference blockade of the supercurrent flow at some special field-dependent temperatures are also discussed with special attention being paid to the formation and evolution of the vortices, which appear as a result of the bend-induced interaction between the different subbands; it is shown, in particular, that the number of vortices decreases with the field and some of them transform into the antivortices. A proof of the very close analogy between two kinds of strips, (1) pure Dirichlet condition on both edges and (2) inner Dirichlet and outer Neumann requirements, derived earlier for $B=0$ is extended to the case of nonzero fields.