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Projectile Fragmentation In Emulsion At (4.1-4.5) A Gev/C, A. El-Naghy, S. A. H. Abou-Steit, M. Mohery Jan 1999

Projectile Fragmentation In Emulsion At (4.1-4.5) A Gev/C, A. El-Naghy, S. A. H. Abou-Steit, M. Mohery

Turkish Journal of Physics

The fragmentation process has been investigated for 4.5A GeV/c^{28}Si nuclei in emulsion and compared with the results of 4.5A GeV/c^{24}Mg and 4.1A GeV/c^{22}Ne in order to test the validity of the different theoretical models. It has been found that a single parameter distribution is insufficient to explain exactly the fragmentation process. Correlation studies have shown to be necessary for distinguishing between the different theoretical models for the fragmentation. The impact parameter, which defines the nature of the collision, has been found to influence considerably the shape of the charge yield distribution. The angular distributions of the projectile fragments can be …


Electrodynamics With Toroid Polarization, V. M. Dubovik, B. H. Saha Jan 1999

Electrodynamics With Toroid Polarization, V. M. Dubovik, B. H. Saha

Turkish Journal of Physics

A modified system of equations of electrodynamics of continuous media has been obtained. Beside the Lagrangian system an alternative gauge-like formalism has been developed to introduce the toroid moment contributions in the obtained equations. The two potential formalism that was worked out by us earlier has been developed further where along with the two vector potentials we introduce two scalar potentials thus taking into account all four basic equations of electromagnetism.


Stellar Observations Made At The Malatya Danjon Astrolabe Station, Orhan Gölbaşi, Hüseyi̇n Kiliç, Fernand Chollet Jan 1999

Stellar Observations Made At The Malatya Danjon Astrolabe Station, Orhan Gölbaşi, Hüseyi̇n Kiliç, Fernand Chollet

Turkish Journal of Physics

We give here the first results of astrometric stellar observations made at the Malatya Station with the modified astrolabe of Paris observatory. This campaign is conducted as part of a cooperation between Inönü University and the Paris Observatory. The astrolabe, which is strictly similar to that of Santiago de Chile, can use two reflecting prisms instead of the trnsparent prism of the Danjon Astrolabe. Consequently, it is possible to observe at the two zenith distances of 30° and 60°. The time is supplied by a GPS receiver which gives UTC with the necessary precision. As the station is a new …


Canonical Treatment Of Regular Lagrangians With Holonomic Constraints As Singular Systems, Eqab M. Rabei Jan 1999

Canonical Treatment Of Regular Lagrangians With Holonomic Constraints As Singular Systems, Eqab M. Rabei

Turkish Journal of Physics

Regular Lagrangians with holomonic constraints are treated as singular systems using the canonical method. The Lagrange multipliers are introduced as generalized coordinates. The regular Lagrangians are extended to be singular and the Hamiltonian formulation is obtained. The equations of motion are written as total differential equations in terms of the time t and the Lagrange multipliers. It is also shown that Lagrange multipliers can be determined from the integrability conditions.


Magnetisation In Two-Dimensions, Bengü Kaplan Jan 1999

Magnetisation In Two-Dimensions, Bengü Kaplan

Turkish Journal of Physics

We discuss the magnetisation deviation in two-dimensions (2d) for an iron film for which the anisotropy is much smaller and hence the magnetisation is a stronger function of temperature. The magnetisation deviation can be adequately described by an RPA (random phase approximation) approach. Our results fit the experimental data at high fields and hence can be used to estimate the value of the effective exchange interaction (J_{2d}) for monolayer (ML) films.


A Magnetization And Gmr Study On Multilayered Fe/Ag/Co Thin Film, Cengi̇z Bi̇rli̇kseven, Alpan Bek, Hüseyi̇n Zafer Durusoy Jan 1999

A Magnetization And Gmr Study On Multilayered Fe/Ag/Co Thin Film, Cengi̇z Bi̇rli̇kseven, Alpan Bek, Hüseyi̇n Zafer Durusoy

Turkish Journal of Physics

Single layer Fe(20Å) and Co(20Å) and multilayered Ag(20Å)/[Fe(20Å)/Ag(40Å)/Co(20Å)/Ag (40Å)] x 3/Ag(20Å) films were prepared in UHV by magnetron sputtering technique onto the silicon substates. Films were determined to have polycrystalline nature through SEM examination. Magnetization measurements were made on single and multilayer films. Due to the polycrystalline structure of the films, rounded magnetization curves were obtained. The GMR effect showed a rounded behaviour which also is an indication of the polycrystallinity of the films. The GMR effect, measured in Fe/Ag/Co multilayer structure, was analyzed with the help of magnetization behaviour of the multilayer structure and magnetization behaviour of the single …


Low-Magnetic Field Microwave Absorption In Superconductors And Conducting Polymers, I. L. Khairullin, P. K. Khabibullaev, V. Yu. Sokolov, A. A. Zakhidov Jan 1999

Low-Magnetic Field Microwave Absorption In Superconductors And Conducting Polymers, I. L. Khairullin, P. K. Khabibullaev, V. Yu. Sokolov, A. A. Zakhidov

Turkish Journal of Physics

Low-magnetic field microwave absorption (MA) in superconductors and conducting polymers is analysed in a low-field signal (LFS) version of the MA detecting method. The temperature dependences, hysteretic benavior and other properties of a LFS are compared in superconducting versus non-superonducting systems. Spin selective hopping processes between polarons and bipolarons is proposed to be one of the possible mechanisms of a LFS in non-degenarate conducting polymers.


Cover And Contents Jan 1999

Cover And Contents

Turkish Journal of Physics

No abstract provided.


Quality Changes Of Scad (Trachurus Trachurus) Which Are Stored Under Different Chillingconditions And Freezing At-12 °C, Mehmet Demi̇rci̇, H. Hülya Orak Jan 1999

Quality Changes Of Scad (Trachurus Trachurus) Which Are Stored Under Different Chillingconditions And Freezing At-12 °C, Mehmet Demi̇rci̇, H. Hülya Orak

Turkish Journal of Agriculture and Forestry

In this study was aimed some quality changes and determitation of shelf life of scad (Trachurus trachurus)using different chilling methods and freezing temperature at -12 °C were investigated. Scad (Trachurus trachurus) stored different conditions and different temperature as, in sea water ice and water ice at -1 °C, sea water + sea ice at + 1 °C, water and water ice at + 1 °C and also freezing at -12 °C. In addition to sensory chracteristics also pH, trimethylamine (TMA), total volatile basic ammonia (TVB-N), thiobarbituric (TBA), peroxide value and ammonia, were determined. The results of labratory analysis indicated that …


Relationships Of Modulus Of Rupture To Soil Properties In Konya Plain, Cevdet Şeker, Sai̇m Karakaplan Jan 1999

Relationships Of Modulus Of Rupture To Soil Properties In Konya Plain, Cevdet Şeker, Sai̇m Karakaplan

Turkish Journal of Agriculture and Forestry

Some physical and chemical analyses were done in sexteren surface (0-15 cm) soil samples from the area among Konya-Çumra-Karapınar, showing soil crusting. Relationships between sois properties and modulus of ruputre were studied. There was a positive relationship between modulus of rupture and available water silt percentages, dispersion ratio, electrical conductivity, organic matter percentage, lime content and soluble calcium, magnesium, sodium, sulfate and chlorine contents. There was a negative relationship between modulus of rupture and sand percentage, aggregate stability, exchangeable calcium content, soluble bicarbonate content. The relationships between modulus of rupture and particle density, field capacity percentage, wilting point per-centage, clay …


Cover And Contents Jan 1999

Cover And Contents

Turkish Journal of Agriculture and Forestry

No abstract provided.


Cover And Contents Jan 1999

Cover And Contents

Turkish Journal of Agriculture and Forestry

No abstract provided.


Cover And Contents Jan 1999

Cover And Contents

Turkish Journal of Medical Sciences

No abstract provided.


Frequency And Distribution Of Risk Factors Forcoronary Heart Disease In The Adult Populationof Rural District Of Elazığ, Turkey, Yasemi̇n Açik, R. Erol Sezer, Hafi̇ze Sezer Jan 1999

Frequency And Distribution Of Risk Factors Forcoronary Heart Disease In The Adult Populationof Rural District Of Elazığ, Turkey, Yasemi̇n Açik, R. Erol Sezer, Hafi̇ze Sezer

Turkish Journal of Medical Sciences

Objectives: This study was performed to determine the frequency and distribution of risk factors for coronary heart disease in people living in the Baskil district of Elazığ. Methods: From a population of 905 individuals aged 35 years and over, 388 were randomly selected. Selection of subjects was done with official records of the Baskil Health Care Center. Although repeated invitations were made, 32 individuals (29 men and 3 women) did not participate. Thus, 356 subjects were enrolled. Blood cholesterol and blood pressure levels, body height and weight were measured in all study subjects. In addition, a questionnaire was applied. Results: …


Autosomal Dominant Osteopetrosis Type Ii, Kazim Şenel, Si̇nan Sönmez, Lale Cerrahoğlu, Mahi̇r Uğur, Selami̇ Suma Jan 1999

Autosomal Dominant Osteopetrosis Type Ii, Kazim Şenel, Si̇nan Sönmez, Lale Cerrahoğlu, Mahi̇r Uğur, Selami̇ Suma

Turkish Journal of Medical Sciences

No abstract provided.


Neonatal Cerebral Candida Abscess: Radiologic And Clinical Findings, Ömer Cevi̇t, Hulusi̇ Eği̇lmez, Hayri̇ B. Toksoy, Di̇lara İçağasioğlu, Turan Sarikaya, İdri̇s Sütçü Jan 1999

Neonatal Cerebral Candida Abscess: Radiologic And Clinical Findings, Ömer Cevi̇t, Hulusi̇ Eği̇lmez, Hayri̇ B. Toksoy, Di̇lara İçağasioğlu, Turan Sarikaya, İdri̇s Sütçü

Turkish Journal of Medical Sciences

No abstract provided.


Cover And Contents Jan 1999

Cover And Contents

Turkish Journal of Medical Sciences

No abstract provided.


Accuracy Of Sphygmomanometers, Okay Başak, Şebnem Karazeybek Jan 1999

Accuracy Of Sphygmomanometers, Okay Başak, Şebnem Karazeybek

Turkish Journal of Medical Sciences

One of the factors affecting the accuracy of readings of blood pressure is the equipment used. Defects or inaccuracy of aneroid sphygmomanometers may be source of error in blood pressure measurement. We inspected 100 sphygmomanometers for physical defects and assessed their accuracy against a standard mercury manometer at four different pressure points. 46 of the 100 sphygmomanometers were determined to be intolerant (deviation from the mercury manometer by greater than±3 mm Hg at two or more of the test points). There were faults in the inflation-deflation system of 34 sphygmomanometers. The most common physical defects were: defective pump bulb, defective …


Very Late Relapse In Hodgkin's Disease, İmdat Di̇lek, Günhan Gürman, Işinsu Kuzu, Seli̇m Erekul Jan 1999

Very Late Relapse In Hodgkin's Disease, İmdat Di̇lek, Günhan Gürman, Işinsu Kuzu, Seli̇m Erekul

Turkish Journal of Medical Sciences

No abstract provided.


Cover And Contents Jan 1999

Cover And Contents

Turkish Journal of Medical Sciences

No abstract provided.


A Study On The Phytoplankton Of Hasan Uğurludam Lake (Samsun-Turkey), Arif Gönülol, Olcay Obali Jan 1998

A Study On The Phytoplankton Of Hasan Uğurludam Lake (Samsun-Turkey), Arif Gönülol, Olcay Obali

Turkish Journal of Biology

The composition and seasonal variations of phytoplankton of Hasan UGURLU Dam Lake were studied using samples collected from two stations between July 1992 to December 1993. 57 taxa were identified belonging to the Bacillariophyta, Chlorophyta, Cyanophyta, Dinophyta and Euglenophyta divisions of phytoplankton. In the phytoplankton, Asterionella formosa, Cyclotella planc-tonica, Pediastrum simplex and Ceratium hirundinella caused water blooms in certain months. The light density and temperature affected the composition and seasonal variations in phytoplankton considerably. Nutrient levels in the lake did not limit the seasonal variations in phytoplankton. It was determined that Lake Hasan Ugurlu had mesotrophic characteristics because of the …


Nanosecond Duration Broadband Luminescence Of Quartz Glasses, Maruf A. Kasymdzhanov, Pulat K. Khabibullaev, Saidislam S. Kurbanov Jan 1998

Nanosecond Duration Broadband Luminescence Of Quartz Glasses, Maruf A. Kasymdzhanov, Pulat K. Khabibullaev, Saidislam S. Kurbanov

Turkish Journal of Physics

The results of investigations of luminescence, excited by radiations of $N_2$- and $Nd^{3+}$: YAG-lasers ($\lambda = 337 nm, \lambda = 532 nm$) in high purity quartz glasses are reported. The luminescence has broad spectrum (350-850 nm) and very short duration (1-20 ns).


Production Of Susy Particles In Polarized \Gammap Collisions, A. Kandemi̇r Jan 1998

Production Of Susy Particles In Polarized \Gammap Collisions, A. Kandemi̇r

Turkish Journal of Physics

We discuss the production of several SUSY particles in the high energy collisions of the real photons off the protons within the MSSM. The polarizations of the colliding beams are also considered. The discovery mass limits for the squark and gluinos are presented and we conclude that the capacity of the future TeV scale $\gamma p$ colliders is quite promising in the search for SUSY particles.


Resummation Of Ir Renormalons In A Single Meson Photoproduction, Shahin S. Agaev Jan 1998

Resummation Of Ir Renormalons In A Single Meson Photoproduction, Shahin S. Agaev

Turkish Journal of Physics

Single pseudoscalar and vector mesons hard semi-inclusive photoproduction $\gamma h\rightarrow MX $ via higher twist mechanism is calculated using the QCD running coupling constant method. It is proved that in the context of this method a higher twist contribution to the photoproduction cross section cannot be normalized in terms of the meson electromagnetic form factor. The structure of infrared renormalon singularities of the higher twist subprocess cross section and the resummed expression (the Borel sum) for it are found. Comparisons are made with earlier results, as well as with leading twist cross section. Phenomenological effects of studied contributions for $\pi, …


Heavy Quark Production At \Gammap Colliders, O. Çakir, M. Yilmaz Jan 1998

Heavy Quark Production At \Gammap Colliders, O. Çakir, M. Yilmaz

Turkish Journal of Physics

Heavy quark pair production at $\gamma p$ colliders is discussed. It is shown that the numbers of $t\bar{t}$ pairs are sufficiently large for investigation of the top quark properties in detail.


Monitoring Of Laboratory Parameters Duringvalproic Acidcarbamazepine Combinationtherapy, F. Müjgan Aynaci, Hilal Mocan, Osman Aynaci, Yakup Aslan Jan 1998

Monitoring Of Laboratory Parameters Duringvalproic Acidcarbamazepine Combinationtherapy, F. Müjgan Aynaci, Hilal Mocan, Osman Aynaci, Yakup Aslan

Turkish Journal of Medical Sciences

No abstract provided.


The Exclusion Of Sjögren-Larsson Syndrome In High Risk Pregnancy Using Enzimatic Methods, H. Kayseri̇li̇, W.B. Ri̇zzo, K. Aydinli, A. Yüksel, M.Yüksel Apak Jan 1998

The Exclusion Of Sjögren-Larsson Syndrome In High Risk Pregnancy Using Enzimatic Methods, H. Kayseri̇li̇, W.B. Ri̇zzo, K. Aydinli, A. Yüksel, M.Yüksel Apak

Turkish Journal of Medical Sciences

No abstract provided.


Uterus Didelphys With An Obstructed Hemivaginaand Ipsilateral Renal Agenesis, Mustafa Öztürk, Okkes Ibrahim Karaman, Ahmet Candan Durak, Nevzat Özcan, Mustafa Küçükaydin Jan 1998

Uterus Didelphys With An Obstructed Hemivaginaand Ipsilateral Renal Agenesis, Mustafa Öztürk, Okkes Ibrahim Karaman, Ahmet Candan Durak, Nevzat Özcan, Mustafa Küçükaydin

Turkish Journal of Medical Sciences

No abstract provided.


A Case Of Cutis Laxa With Normal Parents Butaffected Sibling, Ömer Tarim, Yakup Canitez, Ayşe Doybak Jan 1998

A Case Of Cutis Laxa With Normal Parents Butaffected Sibling, Ömer Tarim, Yakup Canitez, Ayşe Doybak

Turkish Journal of Medical Sciences

No abstract provided.


A Case With Multiple Hereditary Exostosis, Ziya Bayraktaroğlu, Yavuz Coskun, Neşe Sarica, Ercan Si̇vasli Jan 1998

A Case With Multiple Hereditary Exostosis, Ziya Bayraktaroğlu, Yavuz Coskun, Neşe Sarica, Ercan Si̇vasli

Turkish Journal of Medical Sciences

No abstract provided.